diff --git a/AGENTS.md b/AGENTS.md index 35e77d700..d3f4b5980 100644 --- a/AGENTS.md +++ b/AGENTS.md @@ -179,3 +179,58 @@ SharpCompress supports multiple archive and compression formats: 3. **Stream disposal** - Always set `LeaveStreamOpen` explicitly when needed (default is to close) 4. **Tar + non-seekable stream** - Must provide file size or it will throw 6. **Format detection** - Use `ReaderFactory.Open()` for auto-detection, test with actual archive files + +### Async Struct-Copy Bug in LZMA RangeCoder + +When implementing async methods on mutable `struct` types (like `BitEncoder` and `BitDecoder` in the LZMA RangeCoder), be aware that the async state machine copies the struct when `await` is encountered. This means mutations to struct fields after the `await` point may not persist back to the original struct stored in arrays or fields. + +**The Bug:** +```csharp +// BAD: async method on mutable struct +public async ValueTask DecodeAsync(Decoder decoder, CancellationToken cancellationToken = default) +{ + var newBound = (decoder._range >> K_NUM_BIT_MODEL_TOTAL_BITS) * _prob; + if (decoder._code < newBound) + { + decoder._range = newBound; + _prob += (K_BIT_MODEL_TOTAL - _prob) >> K_NUM_MOVE_BITS; // Mutates _prob + await decoder.Normalize2Async(cancellationToken).ConfigureAwait(false); // Struct gets copied here + return 0; // Original _prob update may be lost + } + // ... +} +``` + +**The Fix:** +Refactor async methods on mutable structs to perform all struct mutations synchronously before any `await`, or use a helper method to separate the await from the struct mutation: + +```csharp +// GOOD: struct mutations happen synchronously, await is conditional +public ValueTask DecodeAsync(Decoder decoder, CancellationToken cancellationToken = default) +{ + var newBound = (decoder._range >> K_NUM_BIT_MODEL_TOTAL_BITS) * _prob; + if (decoder._code < newBound) + { + decoder._range = newBound; + _prob += (K_BIT_MODEL_TOTAL - _prob) >> K_NUM_MOVE_BITS; // All mutations complete + return DecodeAsyncHelper(decoder.Normalize2Async(cancellationToken), 0); // Await in helper + } + decoder._range -= newBound; + decoder._code -= newBound; + _prob -= (_prob) >> K_NUM_MOVE_BITS; // All mutations complete + return DecodeAsyncHelper(decoder.Normalize2Async(cancellationToken), 1); // Await in helper +} + +private static async ValueTask DecodeAsyncHelper(ValueTask normalizeTask, uint result) +{ + await normalizeTask.ConfigureAwait(false); + return result; +} +``` + +**Why This Matters:** +In LZMA, the `BitEncoder` and `BitDecoder` structs maintain adaptive probability models in their `_prob` field. When these structs are stored in arrays (e.g., `_models[m]`), the async state machine copy breaks the adaptive model, causing incorrect bit decoding and eventually `DataErrorException` exceptions. + +**Related Files:** +- `src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.Async.cs` - Fixed +- `src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.Async.cs` - Uses readonly structs, so this pattern doesn't apply diff --git a/Directory.Packages.props b/Directory.Packages.props index d5994bd76..4b56f0333 100644 --- a/Directory.Packages.props +++ b/Directory.Packages.props @@ -12,7 +12,7 @@ - + diff --git a/src/SharpCompress/Archives/AbstractArchive.Async.cs b/src/SharpCompress/Archives/AbstractArchive.Async.cs new file mode 100644 index 000000000..9ba878d68 --- /dev/null +++ b/src/SharpCompress/Archives/AbstractArchive.Async.cs @@ -0,0 +1,103 @@ +using System.Collections.Generic; +using System.Linq; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Readers; + +namespace SharpCompress.Archives; + +public abstract partial class AbstractArchive + where TEntry : IArchiveEntry + where TVolume : IVolume +{ + #region Async Support + + // Async properties + public virtual IAsyncEnumerable EntriesAsync => _lazyEntriesAsync; + + public IAsyncEnumerable VolumesAsync => _lazyVolumesAsync; + + protected virtual async IAsyncEnumerable LoadEntriesAsync( + IAsyncEnumerable volumes + ) + { + foreach (var item in LoadEntries(await volumes.ToListAsync())) + { + yield return item; + } + } + + public virtual async ValueTask DisposeAsync() + { + if (!_disposed) + { + await foreach (var v in _lazyVolumesAsync) + { + v.Dispose(); + } + foreach (var v in _lazyEntriesAsync.GetLoaded().Cast()) + { + v.Close(); + } + _sourceStream?.Dispose(); + + _disposed = true; + } + } + + private async ValueTask EnsureEntriesLoadedAsync() + { + await _lazyEntriesAsync.EnsureFullyLoaded(); + await _lazyVolumesAsync.EnsureFullyLoaded(); + } + + private async IAsyncEnumerable EntriesAsyncCast() + { + await foreach (var entry in EntriesAsync) + { + yield return entry; + } + } + + IAsyncEnumerable IAsyncArchive.EntriesAsync => EntriesAsyncCast(); + + IAsyncEnumerable IAsyncArchive.VolumesAsync => VolumesAsyncCast(); + + private async IAsyncEnumerable VolumesAsyncCast() + { + await foreach (var volume in _lazyVolumesAsync) + { + yield return volume; + } + } + + public async ValueTask ExtractAllEntriesAsync() + { + if (!await IsSolidAsync() && Type != ArchiveType.SevenZip) + { + throw new SharpCompressException( + "ExtractAllEntries can only be used on solid archives or 7Zip archives (which require random access)." + ); + } + await EnsureEntriesLoadedAsync(); + return await CreateReaderForSolidExtractionAsync(); + } + + public virtual ValueTask IsSolidAsync() => new(false); + + public async ValueTask IsCompleteAsync() + { + await EnsureEntriesLoadedAsync(); + return await EntriesAsync.AllAsync(x => x.IsComplete); + } + + public async ValueTask TotalSizeAsync() => + await EntriesAsync.AggregateAsync(0L, (total, cf) => total + cf.CompressedSize); + + public async ValueTask TotalUncompressedSizeAsync() => + await EntriesAsync.AggregateAsync(0L, (total, cf) => total + cf.Size); + + public ValueTask IsEncryptedAsync() => new(IsEncrypted); + + #endregion +} diff --git a/src/SharpCompress/Archives/AbstractArchive.cs b/src/SharpCompress/Archives/AbstractArchive.cs index 63e67e69b..989eca70c 100644 --- a/src/SharpCompress/Archives/AbstractArchive.cs +++ b/src/SharpCompress/Archives/AbstractArchive.cs @@ -7,7 +7,7 @@ namespace SharpCompress.Archives; -public abstract class AbstractArchive : IArchive, IAsyncArchive +public abstract partial class AbstractArchive : IArchive, IAsyncArchive where TEntry : IArchiveEntry where TVolume : IVolume { @@ -16,6 +16,10 @@ public abstract class AbstractArchive : IArchive, IAsyncArchive private bool _disposed; private readonly SourceStream? _sourceStream; + // Async fields - kept in original file per refactoring rules + private readonly LazyAsyncReadOnlyCollection _lazyVolumesAsync; + private readonly LazyAsyncReadOnlyCollection _lazyEntriesAsync; + protected ReaderOptions ReaderOptions { get; } internal AbstractArchive(ArchiveType type, SourceStream sourceStream) @@ -77,16 +81,6 @@ internal AbstractArchive(ArchiveType type) protected virtual IAsyncEnumerable LoadVolumesAsync(SourceStream sourceStream) => LoadVolumes(sourceStream).ToAsyncEnumerable(); - protected virtual async IAsyncEnumerable LoadEntriesAsync( - IAsyncEnumerable volumes - ) - { - foreach (var item in LoadEntries(await volumes.ToListAsync())) - { - yield return item; - } - } - IEnumerable IArchive.Entries => Entries.Cast(); IEnumerable IArchive.Volumes => _lazyVolumes.Cast(); @@ -156,85 +150,4 @@ public bool IsComplete return Entries.All(x => x.IsComplete); } } - - #region Async Support - - private readonly LazyAsyncReadOnlyCollection _lazyVolumesAsync; - private readonly LazyAsyncReadOnlyCollection _lazyEntriesAsync; - - public virtual async ValueTask DisposeAsync() - { - if (!_disposed) - { - await foreach (var v in _lazyVolumesAsync) - { - v.Dispose(); - } - foreach (var v in _lazyEntriesAsync.GetLoaded().Cast()) - { - v.Close(); - } - _sourceStream?.Dispose(); - - _disposed = true; - } - } - - private async ValueTask EnsureEntriesLoadedAsync() - { - await _lazyEntriesAsync.EnsureFullyLoaded(); - await _lazyVolumesAsync.EnsureFullyLoaded(); - } - - public virtual IAsyncEnumerable EntriesAsync => _lazyEntriesAsync; - - private async IAsyncEnumerable EntriesAsyncCast() - { - await foreach (var entry in EntriesAsync) - { - yield return entry; - } - } - - IAsyncEnumerable IAsyncArchive.EntriesAsync => EntriesAsyncCast(); - - private async IAsyncEnumerable VolumesAsyncCast() - { - await foreach (var volume in VolumesAsync) - { - yield return volume; - } - } - - public IAsyncEnumerable VolumesAsync => VolumesAsyncCast(); - - public async ValueTask ExtractAllEntriesAsync() - { - if (!IsSolid && Type != ArchiveType.SevenZip) - { - throw new SharpCompressException( - "ExtractAllEntries can only be used on solid archives or 7Zip archives (which require random access)." - ); - } - await EnsureEntriesLoadedAsync(); - return await CreateReaderForSolidExtractionAsync(); - } - - public virtual ValueTask IsSolidAsync() => new(false); - - public async ValueTask IsCompleteAsync() - { - await EnsureEntriesLoadedAsync(); - return await EntriesAsync.AllAsync(x => x.IsComplete); - } - - public async ValueTask TotalSizeAsync() => - await EntriesAsync.AggregateAsync(0L, (total, cf) => total + cf.CompressedSize); - - public async ValueTask TotalUncompressedSizeAsync() => - await EntriesAsync.AggregateAsync(0L, (total, cf) => total + cf.Size); - - public ValueTask IsEncryptedAsync() => new(IsEncrypted); - - #endregion } diff --git a/src/SharpCompress/Archives/AbstractWritableArchive.Async.cs b/src/SharpCompress/Archives/AbstractWritableArchive.Async.cs new file mode 100644 index 000000000..80f3f2092 --- /dev/null +++ b/src/SharpCompress/Archives/AbstractWritableArchive.Async.cs @@ -0,0 +1,123 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Writers; + +namespace SharpCompress.Archives; + +public abstract partial class AbstractWritableArchive + where TEntry : IArchiveEntry + where TVolume : IVolume +{ + // Async property moved from main file + private IAsyncEnumerable OldEntriesAsync => + base.EntriesAsync.Where(x => !removedEntries.Contains(x)); + + private async ValueTask RebuildModifiedCollectionAsync() + { + if (pauseRebuilding) + { + return; + } + hasModifications = true; + newEntries.RemoveAll(v => removedEntries.Contains(v)); + modifiedEntries.Clear(); + await foreach (var entry in OldEntriesAsync) + { + modifiedEntries.Add(entry); + } + modifiedEntries.AddRange(newEntries); + } + + public async ValueTask RemoveEntryAsync(TEntry entry) + { + if (!removedEntries.Contains(entry)) + { + removedEntries.Add(entry); + await RebuildModifiedCollectionAsync(); + } + } + + private async ValueTask DoesKeyMatchExistingAsync( + string key, + CancellationToken cancellationToken + ) + { + await foreach ( + var entry in EntriesAsync.WithCancellation(cancellationToken).ConfigureAwait(false) + ) + { + var path = entry.Key; + if (path is null) + { + continue; + } + var p = path.Replace('/', '\\'); + if (p.Length > 0 && p[0] == '\\') + { + p = p.Substring(1); + } + return string.Equals(p, key, StringComparison.OrdinalIgnoreCase); + } + return false; + } + + public async ValueTask AddEntryAsync( + string key, + Stream source, + bool closeStream, + long size = 0, + DateTime? modified = null, + CancellationToken cancellationToken = default + ) + { + if (key.Length > 0 && key[0] is '/' or '\\') + { + key = key.Substring(1); + } + if (await DoesKeyMatchExistingAsync(key, cancellationToken).ConfigureAwait(false)) + { + throw new ArchiveException("Cannot add entry with duplicate key: " + key); + } + var entry = CreateEntry(key, source, size, modified, closeStream); + newEntries.Add(entry); + await RebuildModifiedCollectionAsync(); + return entry; + } + + public async ValueTask AddDirectoryEntryAsync( + string key, + DateTime? modified = null, + CancellationToken cancellationToken = default + ) + { + if (key.Length > 0 && key[0] is '/' or '\\') + { + key = key.Substring(1); + } + if (await DoesKeyMatchExistingAsync(key, cancellationToken).ConfigureAwait(false)) + { + throw new ArchiveException("Cannot add entry with duplicate key: " + key); + } + var entry = CreateDirectoryEntry(key, modified); + newEntries.Add(entry); + await RebuildModifiedCollectionAsync(); + return entry; + } + + public async ValueTask SaveToAsync( + Stream stream, + WriterOptions options, + CancellationToken cancellationToken = default + ) + { + //reset streams of new entries + newEntries.Cast().ForEach(x => x.Stream.Seek(0, SeekOrigin.Begin)); + await SaveToAsync(stream, options, OldEntriesAsync, newEntries, cancellationToken) + .ConfigureAwait(false); + } +} diff --git a/src/SharpCompress/Archives/AbstractWritableArchive.cs b/src/SharpCompress/Archives/AbstractWritableArchive.cs index 6e482f235..8a1090eee 100644 --- a/src/SharpCompress/Archives/AbstractWritableArchive.cs +++ b/src/SharpCompress/Archives/AbstractWritableArchive.cs @@ -10,7 +10,7 @@ namespace SharpCompress.Archives; -public abstract class AbstractWritableArchive +public abstract partial class AbstractWritableArchive : AbstractArchive, IWritableArchive, IWritableAsyncArchive @@ -84,12 +84,12 @@ public void RemoveEntry(TEntry entry) } } - void IWritableArchiveCommon.RemoveEntry(IArchiveEntry entry) => RemoveEntry((TEntry)entry); + void IWritableArchive.RemoveEntry(IArchiveEntry entry) => RemoveEntry((TEntry)entry); public TEntry AddEntry(string key, Stream source, long size = 0, DateTime? modified = null) => AddEntry(key, source, false, size, modified); - IArchiveEntry IWritableArchiveCommon.AddEntry( + IArchiveEntry IWritableArchive.AddEntry( string key, Stream source, bool closeStream, @@ -97,7 +97,7 @@ IArchiveEntry IWritableArchiveCommon.AddEntry( DateTime? modified ) => AddEntry(key, source, closeStream, size, modified); - IArchiveEntry IWritableArchiveCommon.AddDirectoryEntry(string key, DateTime? modified) => + IArchiveEntry IWritableArchive.AddDirectoryEntry(string key, DateTime? modified) => AddDirectoryEntry(key, modified); public TEntry AddEntry( @@ -140,6 +140,24 @@ private bool DoesKeyMatchExisting(string key) return false; } + ValueTask IWritableAsyncArchive.RemoveEntryAsync(IArchiveEntry entry) => + RemoveEntryAsync((TEntry)entry); + + async ValueTask IWritableAsyncArchive.AddEntryAsync( + string key, + Stream source, + bool closeStream, + long size, + DateTime? modified, + CancellationToken cancellationToken + ) => await AddEntryAsync(key, source, closeStream, size, modified, cancellationToken); + + async ValueTask IWritableAsyncArchive.AddDirectoryEntryAsync( + string key, + DateTime? modified, + CancellationToken cancellationToken + ) => await AddDirectoryEntryAsync(key, modified, cancellationToken); + public TEntry AddDirectoryEntry(string key, DateTime? modified = null) { if (key.Length > 0 && key[0] is '/' or '\\') @@ -163,18 +181,6 @@ public void SaveTo(Stream stream, WriterOptions options) SaveTo(stream, options, OldEntries, newEntries); } - public async ValueTask SaveToAsync( - Stream stream, - WriterOptions options, - CancellationToken cancellationToken = default - ) - { - //reset streams of new entries - newEntries.Cast().ForEach(x => x.Stream.Seek(0, SeekOrigin.Begin)); - await SaveToAsync(stream, options, OldEntries, newEntries, cancellationToken) - .ConfigureAwait(false); - } - protected TEntry CreateEntry( string key, Stream source, @@ -212,7 +218,7 @@ IEnumerable newEntries protected abstract ValueTask SaveToAsync( Stream stream, WriterOptions options, - IEnumerable oldEntries, + IAsyncEnumerable oldEntries, IEnumerable newEntries, CancellationToken cancellationToken = default ); diff --git a/src/SharpCompress/Archives/ArchiveFactory.Async.cs b/src/SharpCompress/Archives/ArchiveFactory.Async.cs new file mode 100644 index 000000000..6b5c4edfb --- /dev/null +++ b/src/SharpCompress/Archives/ArchiveFactory.Async.cs @@ -0,0 +1,158 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Factories; +using SharpCompress.IO; +using SharpCompress.Readers; + +namespace SharpCompress.Archives; + +public static partial class ArchiveFactory +{ + public static async ValueTask OpenAsyncArchive( + Stream stream, + ReaderOptions? readerOptions = null, + CancellationToken cancellationToken = default + ) + { + readerOptions ??= new ReaderOptions(); + stream = SharpCompressStream.Create(stream, bufferSize: readerOptions.BufferSize); + var factory = await FindFactoryAsync(stream, cancellationToken); + return factory.OpenAsyncArchive(stream, readerOptions); + } + + public static ValueTask OpenAsyncArchive( + string filePath, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + filePath.NotNullOrEmpty(nameof(filePath)); + return OpenAsyncArchive(new FileInfo(filePath), options, cancellationToken); + } + + public static async ValueTask OpenAsyncArchive( + FileInfo fileInfo, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + options ??= new ReaderOptions { LeaveStreamOpen = false }; + + var factory = await FindFactoryAsync(fileInfo, cancellationToken); + return factory.OpenAsyncArchive(fileInfo, options); + } + + public static async ValueTask OpenAsyncArchive( + IEnumerable fileInfos, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + fileInfos.NotNull(nameof(fileInfos)); + var filesArray = fileInfos.ToArray(); + if (filesArray.Length == 0) + { + throw new InvalidOperationException("No files to open"); + } + + var fileInfo = filesArray[0]; + if (filesArray.Length == 1) + { + return await OpenAsyncArchive(fileInfo, options, cancellationToken); + } + + fileInfo.NotNull(nameof(fileInfo)); + options ??= new ReaderOptions { LeaveStreamOpen = false }; + + var factory = await FindFactoryAsync(fileInfo, cancellationToken); + return factory.OpenAsyncArchive(filesArray, options, cancellationToken); + } + + public static async ValueTask OpenAsyncArchive( + IEnumerable streams, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + streams.NotNull(nameof(streams)); + var streamsArray = streams.ToArray(); + if (streamsArray.Length == 0) + { + throw new InvalidOperationException("No streams"); + } + + var firstStream = streamsArray[0]; + if (streamsArray.Length == 1) + { + return await OpenAsyncArchive(firstStream, options, cancellationToken); + } + + firstStream.NotNull(nameof(firstStream)); + options ??= new ReaderOptions(); + + var factory = await FindFactoryAsync(firstStream, cancellationToken); + return factory.OpenAsyncArchive(streamsArray, options); + } + + public static ValueTask FindFactoryAsync( + string path, + CancellationToken cancellationToken = default + ) + where T : IFactory + { + path.NotNullOrEmpty(nameof(path)); + return FindFactoryAsync(new FileInfo(path), cancellationToken); + } + + private static async ValueTask FindFactoryAsync( + FileInfo finfo, + CancellationToken cancellationToken + ) + where T : IFactory + { + finfo.NotNull(nameof(finfo)); + using Stream stream = finfo.OpenRead(); + return await FindFactoryAsync(stream, cancellationToken); + } + + private static async ValueTask FindFactoryAsync( + Stream stream, + CancellationToken cancellationToken + ) + where T : IFactory + { + stream.NotNull(nameof(stream)); + if (!stream.CanRead || !stream.CanSeek) + { + throw new ArgumentException("Stream should be readable and seekable"); + } + + var factories = Factory.Factories.OfType(); + + var startPosition = stream.Position; + + foreach (var factory in factories) + { + stream.Seek(startPosition, SeekOrigin.Begin); + + if (await factory.IsArchiveAsync(stream, cancellationToken: cancellationToken)) + { + stream.Seek(startPosition, SeekOrigin.Begin); + + return factory; + } + } + + var extensions = string.Join(", ", factories.Select(item => item.Name)); + + throw new InvalidOperationException( + $"Cannot determine compressed stream type. Supported Archive Formats: {extensions}" + ); + } +} diff --git a/src/SharpCompress/Archives/ArchiveFactory.cs b/src/SharpCompress/Archives/ArchiveFactory.cs index a9800acd9..eca2c579c 100644 --- a/src/SharpCompress/Archives/ArchiveFactory.cs +++ b/src/SharpCompress/Archives/ArchiveFactory.cs @@ -11,7 +11,7 @@ namespace SharpCompress.Archives; -public static class ArchiveFactory +public static partial class ArchiveFactory { public static IArchive OpenArchive(Stream stream, ReaderOptions? readerOptions = null) { @@ -20,18 +20,6 @@ public static IArchive OpenArchive(Stream stream, ReaderOptions? readerOptions = return FindFactory(stream).OpenArchive(stream, readerOptions); } - public static async ValueTask OpenAsyncArchive( - Stream stream, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - readerOptions ??= new ReaderOptions(); - stream = SharpCompressStream.Create(stream, bufferSize: readerOptions.BufferSize); - var factory = await FindFactoryAsync(stream, cancellationToken); - return factory.OpenAsyncArchive(stream, readerOptions); - } - public static IWritableArchive CreateArchive(ArchiveType type) { var factory = Factory @@ -52,16 +40,6 @@ public static IArchive OpenArchive(string filePath, ReaderOptions? options = nul return OpenArchive(new FileInfo(filePath), options); } - public static ValueTask OpenAsyncArchive( - string filePath, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - filePath.NotNullOrEmpty(nameof(filePath)); - return OpenAsyncArchive(new FileInfo(filePath), options, cancellationToken); - } - public static IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? options = null) { options ??= new ReaderOptions { LeaveStreamOpen = false }; @@ -69,18 +47,6 @@ public static IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? options = n return FindFactory(fileInfo).OpenArchive(fileInfo, options); } - public static async ValueTask OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - options ??= new ReaderOptions { LeaveStreamOpen = false }; - - var factory = await FindFactoryAsync(fileInfo, cancellationToken); - return factory.OpenAsyncArchive(fileInfo, options, cancellationToken); - } - public static IArchive OpenArchive( IEnumerable fileInfos, ReaderOptions? options = null @@ -105,32 +71,6 @@ public static IArchive OpenArchive( return FindFactory(fileInfo).OpenArchive(filesArray, options); } - public static async ValueTask OpenAsyncArchive( - IEnumerable fileInfos, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - fileInfos.NotNull(nameof(fileInfos)); - var filesArray = fileInfos.ToArray(); - if (filesArray.Length == 0) - { - throw new InvalidOperationException("No files to open"); - } - - var fileInfo = filesArray[0]; - if (filesArray.Length == 1) - { - return await OpenAsyncArchive(fileInfo, options, cancellationToken); - } - - fileInfo.NotNull(nameof(fileInfo)); - options ??= new ReaderOptions { LeaveStreamOpen = false }; - - var factory = await FindFactoryAsync(fileInfo, cancellationToken); - return factory.OpenAsyncArchive(filesArray, options, cancellationToken); - } - public static IArchive OpenArchive(IEnumerable streams, ReaderOptions? options = null) { streams.NotNull(nameof(streams)); @@ -152,33 +92,6 @@ public static IArchive OpenArchive(IEnumerable streams, ReaderOptions? o return FindFactory(firstStream).OpenArchive(streamsArray, options); } - public static async ValueTask OpenAsyncArchive( - IEnumerable streams, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - streams.NotNull(nameof(streams)); - var streamsArray = streams.ToArray(); - if (streamsArray.Length == 0) - { - throw new InvalidOperationException("No streams"); - } - - var firstStream = streamsArray[0]; - if (streamsArray.Length == 1) - { - return await OpenAsyncArchive(firstStream, options, cancellationToken); - } - - firstStream.NotNull(nameof(firstStream)); - options ??= new ReaderOptions(); - - var factory = FindFactory(firstStream); - return factory.OpenAsyncArchive(streamsArray, options); - } - public static void WriteToDirectory( string sourceArchive, string destinationDirectory, @@ -189,61 +102,23 @@ public static void WriteToDirectory( archive.WriteToDirectory(destinationDirectory, options); } - private static T FindFactory(FileInfo finfo) + public static T FindFactory(string path) where T : IFactory { - finfo.NotNull(nameof(finfo)); - using Stream stream = finfo.OpenRead(); + path.NotNullOrEmpty(nameof(path)); + using Stream stream = File.OpenRead(path); return FindFactory(stream); } - private static T FindFactory(Stream stream) - where T : IFactory - { - stream.NotNull(nameof(stream)); - if (!stream.CanRead || !stream.CanSeek) - { - throw new ArgumentException("Stream should be readable and seekable"); - } - - var factories = Factory.Factories.OfType(); - - var startPosition = stream.Position; - - foreach (var factory in factories) - { - stream.Seek(startPosition, SeekOrigin.Begin); - - if (factory.IsArchive(stream)) - { - stream.Seek(startPosition, SeekOrigin.Begin); - - return factory; - } - } - - var extensions = string.Join(", ", factories.Select(item => item.Name)); - - throw new InvalidOperationException( - $"Cannot determine compressed stream type. Supported Archive Formats: {extensions}" - ); - } - - private static async ValueTask FindFactoryAsync( - FileInfo finfo, - CancellationToken cancellationToken - ) + public static T FindFactory(FileInfo finfo) where T : IFactory { finfo.NotNull(nameof(finfo)); using Stream stream = finfo.OpenRead(); - return await FindFactoryAsync(stream, cancellationToken); + return FindFactory(stream); } - private static async ValueTask FindFactoryAsync( - Stream stream, - CancellationToken cancellationToken - ) + public static T FindFactory(Stream stream) where T : IFactory { stream.NotNull(nameof(stream)); @@ -260,7 +135,7 @@ CancellationToken cancellationToken { stream.Seek(startPosition, SeekOrigin.Begin); - if (await factory.IsArchiveAsync(stream, cancellationToken: cancellationToken)) + if (factory.IsArchive(stream)) { stream.Seek(startPosition, SeekOrigin.Begin); @@ -275,6 +150,8 @@ CancellationToken cancellationToken ); } + // Async methods moved to ArchiveFactory.Async.cs + public static bool IsArchive( string filePath, out ArchiveType? type, @@ -345,6 +222,4 @@ public static IEnumerable GetFileParts(FileInfo part1) } } } - - public static IArchiveFactory AutoFactory { get; } = new AutoArchiveFactory(); } diff --git a/src/SharpCompress/Archives/ArchiveVolumeFactory.cs b/src/SharpCompress/Archives/ArchiveVolumeFactory.cs index 81a5d4fdd..26d7c6409 100644 --- a/src/SharpCompress/Archives/ArchiveVolumeFactory.cs +++ b/src/SharpCompress/Archives/ArchiveVolumeFactory.cs @@ -13,6 +13,7 @@ internal abstract class ArchiveVolumeFactory //split 001, 002 ... var m = Regex.Match(part1.Name, @"^(.*\.)([0-9]+)$", RegexOptions.IgnoreCase); if (m.Success) + { item = new FileInfo( Path.Combine( part1.DirectoryName!, @@ -22,9 +23,13 @@ internal abstract class ArchiveVolumeFactory ) ) ); + } if (item != null && item.Exists) + { return item; + } + return null; } } diff --git a/src/SharpCompress/Archives/AutoArchiveFactory.cs b/src/SharpCompress/Archives/AutoArchiveFactory.cs deleted file mode 100644 index f588b0851..000000000 --- a/src/SharpCompress/Archives/AutoArchiveFactory.cs +++ /dev/null @@ -1,52 +0,0 @@ -using System; -using System.Collections.Generic; -using System.IO; -using System.Threading; -using System.Threading.Tasks; -using SharpCompress.Common; -using SharpCompress.Readers; - -namespace SharpCompress.Archives; - -internal class AutoArchiveFactory : IArchiveFactory -{ - public string Name => nameof(AutoArchiveFactory); - - public ArchiveType? KnownArchiveType => null; - - public IEnumerable GetSupportedExtensions() => throw new NotSupportedException(); - - public bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => throw new NotSupportedException(); - - public ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize, - CancellationToken cancellationToken = default - ) => throw new NotSupportedException(); - - public FileInfo? GetFilePart(int index, FileInfo part1) => throw new NotSupportedException(); - - public IArchive OpenArchive(Stream stream, ReaderOptions? readerOptions = null) => - ArchiveFactory.OpenArchive(stream, readerOptions); - - public IAsyncArchive OpenAsyncArchive(Stream stream, ReaderOptions? readerOptions = null) => - (IAsyncArchive)OpenArchive(stream, readerOptions); - - public IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => - ArchiveFactory.OpenArchive(fileInfo, readerOptions); - - public IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfo, readerOptions); - } -} diff --git a/src/SharpCompress/Archives/GZip/GZipArchive.Async.cs b/src/SharpCompress/Archives/GZip/GZipArchive.Async.cs new file mode 100644 index 000000000..a087e1569 --- /dev/null +++ b/src/SharpCompress/Archives/GZip/GZipArchive.Async.cs @@ -0,0 +1,86 @@ +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.GZip; +using SharpCompress.IO; +using SharpCompress.Readers; +using SharpCompress.Readers.GZip; +using SharpCompress.Writers; +using SharpCompress.Writers.GZip; + +namespace SharpCompress.Archives.GZip; + +public partial class GZipArchive +{ + public ValueTask SaveToAsync(string filePath, CancellationToken cancellationToken = default) => + SaveToAsync(new FileInfo(filePath), cancellationToken); + + public async ValueTask SaveToAsync( + FileInfo fileInfo, + CancellationToken cancellationToken = default + ) + { + using var stream = fileInfo.Open(FileMode.Create, FileAccess.Write); + await SaveToAsync(stream, new WriterOptions(CompressionType.GZip), cancellationToken) + .ConfigureAwait(false); + } + + protected override async ValueTask SaveToAsync( + Stream stream, + WriterOptions options, + IAsyncEnumerable oldEntries, + IEnumerable newEntries, + CancellationToken cancellationToken = default + ) + { + if (Entries.Count > 1) + { + throw new InvalidFormatException("Only one entry is allowed in a GZip Archive"); + } + using var writer = new GZipWriter(stream, new GZipWriterOptions(options)); + await foreach ( + var entry in oldEntries.WithCancellation(cancellationToken).ConfigureAwait(false) + ) + { + if (!entry.IsDirectory) + { + using var entryStream = entry.OpenEntryStream(); + await writer + .WriteAsync( + entry.Key.NotNull("Entry Key is null"), + entryStream, + cancellationToken + ) + .ConfigureAwait(false); + } + } + foreach (var entry in newEntries.Where(x => !x.IsDirectory)) + { + using var entryStream = entry.OpenEntryStream(); + await writer + .WriteAsync(entry.Key.NotNull("Entry Key is null"), entryStream, cancellationToken) + .ConfigureAwait(false); + } + } + + protected override ValueTask CreateReaderForSolidExtractionAsync() + { + var stream = Volumes.Single().Stream; + stream.Position = 0; + return new((IAsyncReader)GZipReader.OpenReader(stream)); + } + + protected override async IAsyncEnumerable LoadEntriesAsync( + IAsyncEnumerable volumes + ) + { + var stream = (await volumes.SingleAsync()).Stream; + yield return new GZipArchiveEntry( + this, + await GZipFilePart.CreateAsync(stream, ReaderOptions.ArchiveEncoding) + ); + } +} diff --git a/src/SharpCompress/Archives/GZip/GZipArchive.Factory.cs b/src/SharpCompress/Archives/GZip/GZipArchive.Factory.cs index 4d413e63f..e793cd9b7 100644 --- a/src/SharpCompress/Archives/GZip/GZipArchive.Factory.cs +++ b/src/SharpCompress/Archives/GZip/GZipArchive.Factory.cs @@ -1,4 +1,5 @@ using System; +using System.Buffers; using System.Collections.Generic; using System.IO; using System.Linq; @@ -180,18 +181,21 @@ public static async ValueTask IsGZipFileAsync( CancellationToken cancellationToken = default ) { - byte[] header = new byte[10]; - - if (!await stream.ReadFullyAsync(header, cancellationToken).ConfigureAwait(false)) + var header = ArrayPool.Shared.Rent(10); + try { - return false; - } + await stream.ReadFullyAsync(header, 0, 10, cancellationToken).ConfigureAwait(false); - if (header[0] != 0x1F || header[1] != 0x8B || header[2] != 8) + if (header[0] != 0x1F || header[1] != 0x8B || header[2] != 8) + { + return false; + } + + return true; + } + finally { - return false; + ArrayPool.Shared.Return(header); } - - return true; } } diff --git a/src/SharpCompress/Archives/GZip/GZipArchive.cs b/src/SharpCompress/Archives/GZip/GZipArchive.cs index 7d4c345d1..a7dfb427b 100644 --- a/src/SharpCompress/Archives/GZip/GZipArchive.cs +++ b/src/SharpCompress/Archives/GZip/GZipArchive.cs @@ -36,19 +36,6 @@ public void SaveTo(FileInfo fileInfo) SaveTo(stream, new WriterOptions(CompressionType.GZip)); } - public ValueTask SaveToAsync(string filePath, CancellationToken cancellationToken = default) => - SaveToAsync(new FileInfo(filePath), cancellationToken); - - public async ValueTask SaveToAsync( - FileInfo fileInfo, - CancellationToken cancellationToken = default - ) - { - using var stream = fileInfo.Open(FileMode.Create, FileAccess.Write); - await SaveToAsync(stream, new WriterOptions(CompressionType.GZip), cancellationToken) - .ConfigureAwait(false); - } - protected override GZipArchiveEntry CreateEntryInternal( string filePath, Stream source, @@ -92,28 +79,6 @@ IEnumerable newEntries } } - protected override async ValueTask SaveToAsync( - Stream stream, - WriterOptions options, - IEnumerable oldEntries, - IEnumerable newEntries, - CancellationToken cancellationToken = default - ) - { - if (Entries.Count > 1) - { - throw new InvalidFormatException("Only one entry is allowed in a GZip Archive"); - } - using var writer = new GZipWriter(stream, new GZipWriterOptions(options)); - foreach (var entry in oldEntries.Concat(newEntries).Where(x => !x.IsDirectory)) - { - using var entryStream = entry.OpenEntryStream(); - await writer - .WriteAsync(entry.Key.NotNull("Entry Key is null"), entryStream, cancellationToken) - .ConfigureAwait(false); - } - } - protected override IEnumerable LoadEntries(IEnumerable volumes) { var stream = volumes.Single().Stream; @@ -123,28 +88,10 @@ protected override IEnumerable LoadEntries(IEnumerable LoadEntriesAsync( - IAsyncEnumerable volumes - ) - { - var stream = (await volumes.SingleAsync()).Stream; - yield return new GZipArchiveEntry( - this, - await GZipFilePart.CreateAsync(stream, ReaderOptions.ArchiveEncoding) - ); - } - protected override IReader CreateReaderForSolidExtraction() { var stream = Volumes.Single().Stream; stream.Position = 0; return GZipReader.OpenReader(stream); } - - protected override ValueTask CreateReaderForSolidExtractionAsync() - { - var stream = Volumes.Single().Stream; - stream.Position = 0; - return new((IAsyncReader)GZipReader.OpenReader(stream)); - } } diff --git a/src/SharpCompress/Archives/IArchiveFactory.cs b/src/SharpCompress/Archives/IArchiveFactory.cs index eb80e072a..12777a459 100644 --- a/src/SharpCompress/Archives/IArchiveFactory.cs +++ b/src/SharpCompress/Archives/IArchiveFactory.cs @@ -47,9 +47,5 @@ public interface IArchiveFactory : IFactory /// the file to open. /// reading options. /// Cancellation token. - IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ); + IAsyncArchive OpenAsyncArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null); } diff --git a/src/SharpCompress/Archives/IAsyncArchiveExtensions.cs b/src/SharpCompress/Archives/IAsyncArchiveExtensions.cs index df4cb05c4..7a930bb07 100644 --- a/src/SharpCompress/Archives/IAsyncArchiveExtensions.cs +++ b/src/SharpCompress/Archives/IAsyncArchiveExtensions.cs @@ -20,7 +20,7 @@ public static class IAsyncArchiveExtensions /// Extraction options. /// Optional progress reporter for tracking extraction progress. /// Optional cancellation token. - public async Task WriteToDirectoryAsync( + public async ValueTask WriteToDirectoryAsync( string destinationDirectory, ExtractionOptions? options = null, IProgress? progress = null, @@ -47,7 +47,7 @@ await archive.WriteToDirectoryAsyncInternal( } } - private async Task WriteToDirectoryAsyncInternal( + private async ValueTask WriteToDirectoryAsyncInternal( string destinationDirectory, ExtractionOptions? options, IProgress? progress, diff --git a/src/SharpCompress/Archives/IWritableArchive.cs b/src/SharpCompress/Archives/IWritableArchive.cs index 28496b48e..1451069f8 100644 --- a/src/SharpCompress/Archives/IWritableArchive.cs +++ b/src/SharpCompress/Archives/IWritableArchive.cs @@ -13,12 +13,10 @@ public interface IWritableArchiveCommon /// /// IDisposeable to resume entry rebuilding IDisposable PauseEntryRebuilding(); +} - /// - /// Removes the specified entry from the archive. - /// - void RemoveEntry(IArchiveEntry entry); - +public interface IWritableArchive : IArchive, IWritableArchiveCommon +{ IArchiveEntry AddEntry( string key, Stream source, @@ -28,14 +26,16 @@ IArchiveEntry AddEntry( ); IArchiveEntry AddDirectoryEntry(string key, DateTime? modified = null); -} -public interface IWritableArchive : IArchive, IWritableArchiveCommon -{ /// /// Saves the archive to the specified stream using the given writer options. /// void SaveTo(Stream stream, WriterOptions options); + + /// + /// Removes the specified entry from the archive. + /// + void RemoveEntry(IArchiveEntry entry); } public interface IWritableAsyncArchive : IAsyncArchive, IWritableArchiveCommon @@ -48,4 +48,30 @@ ValueTask SaveToAsync( WriterOptions options, CancellationToken cancellationToken = default ); + + /// + /// Asynchronously adds an entry to the archive with the specified key, source stream, and options. + /// + ValueTask AddEntryAsync( + string key, + Stream source, + bool closeStream, + long size = 0, + DateTime? modified = null, + CancellationToken cancellationToken = default + ); + + /// + /// Asynchronously adds a directory entry to the archive with the specified key and modification time. + /// + ValueTask AddDirectoryEntryAsync( + string key, + DateTime? modified = null, + CancellationToken cancellationToken = default + ); + + /// + /// Removes the specified entry from the archive. + /// + ValueTask RemoveEntryAsync(IArchiveEntry entry); } diff --git a/src/SharpCompress/Archives/IWritableArchiveCommonExtensions.cs b/src/SharpCompress/Archives/IWritableArchiveCommonExtensions.cs deleted file mode 100644 index 7f276ecee..000000000 --- a/src/SharpCompress/Archives/IWritableArchiveCommonExtensions.cs +++ /dev/null @@ -1,59 +0,0 @@ -using System; -using System.IO; - -namespace SharpCompress.Archives; - -public static class IWritableArchiveCommonExtensions -{ - extension(IWritableArchiveCommon writableArchive) - { - public void AddAllFromDirectory( - string filePath, - string searchPattern = "*.*", - SearchOption searchOption = SearchOption.AllDirectories - ) - { - using (writableArchive.PauseEntryRebuilding()) - { - foreach ( - var path in Directory.EnumerateFiles(filePath, searchPattern, searchOption) - ) - { - var fileInfo = new FileInfo(path); - writableArchive.AddEntry( - path.Substring(filePath.Length), - fileInfo.OpenRead(), - true, - fileInfo.Length, - fileInfo.LastWriteTime - ); - } - } - } - - public IArchiveEntry AddEntry(string key, string file) => - writableArchive.AddEntry(key, new FileInfo(file)); - - public IArchiveEntry AddEntry( - string key, - Stream source, - long size = 0, - DateTime? modified = null - ) => writableArchive.AddEntry(key, source, false, size, modified); - - public IArchiveEntry AddEntry(string key, FileInfo fileInfo) - { - if (!fileInfo.Exists) - { - throw new ArgumentException("FileInfo does not exist."); - } - return writableArchive.AddEntry( - key, - fileInfo.OpenRead(), - true, - fileInfo.Length, - fileInfo.LastWriteTime - ); - } - } -} diff --git a/src/SharpCompress/Archives/IWritableArchiveExtensions.cs b/src/SharpCompress/Archives/IWritableArchiveExtensions.cs index 60971bfc1..f383ec870 100644 --- a/src/SharpCompress/Archives/IWritableArchiveExtensions.cs +++ b/src/SharpCompress/Archives/IWritableArchiveExtensions.cs @@ -1,3 +1,4 @@ +using System; using System.IO; using SharpCompress.Common; using SharpCompress.Writers; @@ -8,6 +9,55 @@ public static class IWritableArchiveExtensions { extension(IWritableArchive writableArchive) { + public void AddAllFromDirectory( + string filePath, + string searchPattern = "*.*", + SearchOption searchOption = SearchOption.AllDirectories + ) + { + using (writableArchive.PauseEntryRebuilding()) + { + foreach ( + var path in Directory.EnumerateFiles(filePath, searchPattern, searchOption) + ) + { + var fileInfo = new FileInfo(path); + writableArchive.AddEntry( + path.Substring(filePath.Length), + fileInfo.OpenRead(), + true, + fileInfo.Length, + fileInfo.LastWriteTime + ); + } + } + } + + public IArchiveEntry AddEntry(string key, string file) => + writableArchive.AddEntry(key, new FileInfo(file)); + + public IArchiveEntry AddEntry( + string key, + Stream source, + long size = 0, + DateTime? modified = null + ) => writableArchive.AddEntry(key, source, false, size, modified); + + public IArchiveEntry AddEntry(string key, FileInfo fileInfo) + { + if (!fileInfo.Exists) + { + throw new ArgumentException("FileInfo does not exist."); + } + return writableArchive.AddEntry( + key, + fileInfo.OpenRead(), + true, + fileInfo.Length, + fileInfo.LastWriteTime + ); + } + public void SaveTo(string filePath, WriterOptions? options = null) => writableArchive.SaveTo(new FileInfo(filePath), options ?? new(CompressionType.Deflate)); diff --git a/src/SharpCompress/Archives/IWritableAsyncArchiveExtensions.cs b/src/SharpCompress/Archives/IWritableAsyncArchiveExtensions.cs index a69bfc0a3..933fdc8f9 100644 --- a/src/SharpCompress/Archives/IWritableAsyncArchiveExtensions.cs +++ b/src/SharpCompress/Archives/IWritableAsyncArchiveExtensions.cs @@ -1,3 +1,4 @@ +using System; using System.IO; using System.Threading; using System.Threading.Tasks; @@ -10,6 +11,55 @@ public static class IWritableAsyncArchiveExtensions { extension(IWritableAsyncArchive writableArchive) { + public async ValueTask AddAllFromDirectoryAsync( + string filePath, + string searchPattern = "*.*", + SearchOption searchOption = SearchOption.AllDirectories + ) + { + using (writableArchive.PauseEntryRebuilding()) + { + foreach ( + var path in Directory.EnumerateFiles(filePath, searchPattern, searchOption) + ) + { + var fileInfo = new FileInfo(path); + await writableArchive.AddEntryAsync( + path.Substring(filePath.Length), + fileInfo.OpenRead(), + true, + fileInfo.Length, + fileInfo.LastWriteTime + ); + } + } + } + + public ValueTask AddEntryAsync(string key, string file) => + writableArchive.AddEntryAsync(key, new FileInfo(file)); + + public ValueTask AddEntryAsync( + string key, + Stream source, + long size = 0, + DateTime? modified = null + ) => writableArchive.AddEntryAsync(key, source, false, size, modified); + + public ValueTask AddEntryAsync(string key, FileInfo fileInfo) + { + if (!fileInfo.Exists) + { + throw new ArgumentException("FileInfo does not exist."); + } + return writableArchive.AddEntryAsync( + key, + fileInfo.OpenRead(), + true, + fileInfo.Length, + fileInfo.LastWriteTime + ); + } + public ValueTask SaveToAsync( string filePath, WriterOptions? options = null, diff --git a/src/SharpCompress/Archives/Rar/FileInfoRarArchiveVolume.cs b/src/SharpCompress/Archives/Rar/FileInfoRarArchiveVolume.cs index 65f31d013..f0754f67a 100644 --- a/src/SharpCompress/Archives/Rar/FileInfoRarArchiveVolume.cs +++ b/src/SharpCompress/Archives/Rar/FileInfoRarArchiveVolume.cs @@ -36,4 +36,7 @@ internal override RarFilePart CreateFilePart(MarkHeader markHeader, FileHeader f new FileInfoRarFilePart(this, ReaderOptions.Password, markHeader, fileHeader, FileInfo); internal override IEnumerable ReadFileParts() => FileParts; + + internal override IAsyncEnumerable ReadFilePartsAsync() => + FileParts.ToAsyncEnumerable(); } diff --git a/src/SharpCompress/Archives/Rar/RarArchive.Async.cs b/src/SharpCompress/Archives/Rar/RarArchive.Async.cs new file mode 100644 index 000000000..563d6bcb7 --- /dev/null +++ b/src/SharpCompress/Archives/Rar/RarArchive.Async.cs @@ -0,0 +1,53 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Archives.Rar; +using SharpCompress.Common; +using SharpCompress.Common.Rar; +using SharpCompress.IO; +using SharpCompress.Readers; +using SharpCompress.Readers.Rar; + +namespace SharpCompress.Archives.Rar; + +public partial class RarArchive +{ + public override async ValueTask DisposeAsync() + { + if (!_disposed) + { + if (UnpackV1.IsValueCreated && UnpackV1.Value is IDisposable unpackV1) + { + unpackV1.Dispose(); + } + + _disposed = true; + await base.DisposeAsync(); + } + } + + protected override async ValueTask CreateReaderForSolidExtractionAsync() + { + if (await this.IsMultipartVolumeAsync()) + { + var streams = await VolumesAsync + .Select(volume => + { + volume.Stream.Position = 0; + return volume.Stream; + }) + .ToListAsync(); + return (RarReader)RarReader.OpenReader(streams, ReaderOptions); + } + + var stream = (await VolumesAsync.FirstAsync()).Stream; + stream.Position = 0; + return (RarReader)RarReader.OpenReader(stream, ReaderOptions); + } + + public override async ValueTask IsSolidAsync() => + await (await VolumesAsync.CastAsync().FirstAsync()).IsSolidArchiveAsync(); +} diff --git a/src/SharpCompress/Archives/Rar/RarArchive.Factory.cs b/src/SharpCompress/Archives/Rar/RarArchive.Factory.cs index f3e9a99d2..fe1eb5c3d 100644 --- a/src/SharpCompress/Archives/Rar/RarArchive.Factory.cs +++ b/src/SharpCompress/Archives/Rar/RarArchive.Factory.cs @@ -3,6 +3,7 @@ using System.IO; using System.Linq; using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common; using SharpCompress.Common.Rar; using SharpCompress.Common.Rar.Headers; @@ -163,4 +164,24 @@ public static bool IsRarFile(Stream stream, ReaderOptions? options = null) return false; } } + + public static async ValueTask IsRarFileAsync( + Stream stream, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + try + { + await MarkHeader + .ReadAsync(stream, true, false, cancellationToken) + .ConfigureAwait(false); + return true; + } + catch + { + return false; + } + } } diff --git a/src/SharpCompress/Archives/Rar/RarArchive.cs b/src/SharpCompress/Archives/Rar/RarArchive.cs index 17821b374..deb49aeaf 100644 --- a/src/SharpCompress/Archives/Rar/RarArchive.cs +++ b/src/SharpCompress/Archives/Rar/RarArchive.cs @@ -24,7 +24,10 @@ public interface IRarArchive : IArchive, IRarArchiveCommon { } public interface IRarAsyncArchive : IAsyncArchive, IRarArchiveCommon { } -public partial class RarArchive : AbstractArchive, IRarArchive +public partial class RarArchive + : AbstractArchive, + IRarArchive, + IRarAsyncArchive { private bool _disposed; internal Lazy UnpackV2017 { get; } = @@ -48,23 +51,14 @@ public override void Dispose() } } - public override async ValueTask DisposeAsync() - { - if (!_disposed) - { - if (UnpackV1.IsValueCreated && UnpackV1.Value is IDisposable unpackV1) - { - unpackV1.Dispose(); - } - - _disposed = true; - await base.DisposeAsync(); - } - } - protected override IEnumerable LoadEntries(IEnumerable volumes) => RarArchiveEntryFactory.GetEntries(this, volumes, ReaderOptions); + // Simple async property - kept in original file + protected override IAsyncEnumerable LoadEntriesAsync( + IAsyncEnumerable volumes + ) => RarArchiveEntryFactory.GetEntriesAsync(this, volumes, ReaderOptions); + protected override IEnumerable LoadVolumes(SourceStream sourceStream) { sourceStream.LoadAllParts(); @@ -86,13 +80,7 @@ protected override IEnumerable LoadVolumes(SourceStream sourceStream) return new StreamRarArchiveVolume(sourceStream, ReaderOptions, i++).AsEnumerable(); } - protected override IReader CreateReaderForSolidExtraction() => - CreateReaderForSolidExtractionInternal(); - - protected override ValueTask CreateReaderForSolidExtractionAsync() => - new(CreateReaderForSolidExtractionInternal()); - - private RarReader CreateReaderForSolidExtractionInternal() + protected override IReader CreateReaderForSolidExtraction() { if (this.IsMultipartVolume()) { @@ -114,5 +102,6 @@ private RarReader CreateReaderForSolidExtractionInternal() public override bool IsEncrypted => Entries.First(x => !x.IsDirectory).IsEncrypted; public virtual int MinVersion => Volumes.First().MinVersion; + public virtual int MaxVersion => Volumes.First().MaxVersion; } diff --git a/src/SharpCompress/Archives/Rar/RarArchiveEntry.Async.cs b/src/SharpCompress/Archives/Rar/RarArchiveEntry.Async.cs new file mode 100644 index 000000000..dbc2cac00 --- /dev/null +++ b/src/SharpCompress/Archives/Rar/RarArchiveEntry.Async.cs @@ -0,0 +1,43 @@ +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar; +using SharpCompress.Common.Rar.Headers; +using SharpCompress.Compressors.Rar; +using SharpCompress.Readers; + +namespace SharpCompress.Archives.Rar; + +public partial class RarArchiveEntry +{ + public async ValueTask OpenEntryStreamAsync( + CancellationToken cancellationToken = default + ) + { + RarStream stream; + if (IsRarV3) + { + stream = new RarStream( + archive.UnpackV1.Value, + FileHeader, + await MultiVolumeReadOnlyAsyncStream.Create( + Parts.ToAsyncEnumerable().CastAsync() + ) + ); + } + else + { + stream = new RarStream( + archive.UnpackV2017.Value, + FileHeader, + await MultiVolumeReadOnlyAsyncStream.Create( + Parts.ToAsyncEnumerable().CastAsync() + ) + ); + } + + await stream.InitializeAsync(cancellationToken); + return stream; + } +} diff --git a/src/SharpCompress/Archives/Rar/RarArchiveEntry.cs b/src/SharpCompress/Archives/Rar/RarArchiveEntry.cs index 0fe259cca..3d1a74d2e 100644 --- a/src/SharpCompress/Archives/Rar/RarArchiveEntry.cs +++ b/src/SharpCompress/Archives/Rar/RarArchiveEntry.cs @@ -12,7 +12,7 @@ namespace SharpCompress.Archives.Rar; -public class RarArchiveEntry : RarEntry, IArchiveEntry +public partial class RarArchiveEntry : RarEntry, IArchiveEntry { private readonly ICollection parts; private readonly RarArchive archive; @@ -92,32 +92,6 @@ public Stream OpenEntryStream() return stream; } - public async ValueTask OpenEntryStreamAsync( - CancellationToken cancellationToken = default - ) - { - RarStream stream; - if (IsRarV3) - { - stream = new RarStream( - archive.UnpackV1.Value, - FileHeader, - new MultiVolumeReadOnlyStream(Parts.Cast()) - ); - } - else - { - stream = new RarStream( - archive.UnpackV2017.Value, - FileHeader, - new MultiVolumeReadOnlyStream(Parts.Cast()) - ); - } - - await stream.InitializeAsync(cancellationToken); - return stream; - } - public bool IsComplete { get diff --git a/src/SharpCompress/Archives/Rar/RarArchiveEntryFactory.cs b/src/SharpCompress/Archives/Rar/RarArchiveEntryFactory.cs index ec4ace7c6..12d569daa 100644 --- a/src/SharpCompress/Archives/Rar/RarArchiveEntryFactory.cs +++ b/src/SharpCompress/Archives/Rar/RarArchiveEntryFactory.cs @@ -17,6 +17,19 @@ private static IEnumerable GetFileParts(IEnumerable part } } + private static async IAsyncEnumerable GetFilePartsAsync( + IAsyncEnumerable parts + ) + { + await foreach (var rarPart in parts) + { + await foreach (var fp in rarPart.ReadFilePartsAsync()) + { + yield return fp; + } + } + } + private static IEnumerable> GetMatchedFileParts( IEnumerable parts ) @@ -38,6 +51,27 @@ IEnumerable parts } } + private static async IAsyncEnumerable> GetMatchedFilePartsAsync( + IAsyncEnumerable parts + ) + { + var groupedParts = new List(); + await foreach (var fp in GetFilePartsAsync(parts)) + { + groupedParts.Add(fp); + + if (!fp.FileHeader.IsSplitAfter) + { + yield return groupedParts; + groupedParts = new List(); + } + } + if (groupedParts.Count > 0) + { + yield return groupedParts; + } + } + internal static IEnumerable GetEntries( RarArchive archive, IEnumerable rarParts, @@ -49,4 +83,16 @@ ReaderOptions readerOptions yield return new RarArchiveEntry(archive, groupedParts, readerOptions); } } + + internal static async IAsyncEnumerable GetEntriesAsync( + RarArchive archive, + IAsyncEnumerable rarParts, + ReaderOptions readerOptions + ) + { + await foreach (var groupedParts in GetMatchedFilePartsAsync(rarParts)) + { + yield return new RarArchiveEntry(archive, groupedParts, readerOptions); + } + } } diff --git a/src/SharpCompress/Archives/Rar/RarArchiveVolumeFactory.cs b/src/SharpCompress/Archives/Rar/RarArchiveVolumeFactory.cs index f5ce89b8b..1bd98f58f 100644 --- a/src/SharpCompress/Archives/Rar/RarArchiveVolumeFactory.cs +++ b/src/SharpCompress/Archives/Rar/RarArchiveVolumeFactory.cs @@ -13,6 +13,7 @@ internal static class RarArchiveVolumeFactory //new style rar - ..part1 | /part01 | part001 .... var m = Regex.Match(part1.Name, @"^(.*\.part)([0-9]+)(\.rar)$", RegexOptions.IgnoreCase); if (m.Success) + { item = new FileInfo( Path.Combine( part1.DirectoryName!, @@ -23,11 +24,13 @@ internal static class RarArchiveVolumeFactory ) ) ); + } else { //old style - ...rar, .r00, .r01 ... m = Regex.Match(part1.Name, @"^(.*\.)([r-z{])(ar|[0-9]+)$", RegexOptions.IgnoreCase); if (m.Success) + { item = new FileInfo( Path.Combine( part1.DirectoryName!, @@ -40,12 +43,17 @@ internal static class RarArchiveVolumeFactory ) ) ); + } else //split .001, .002 .... + { return ArchiveVolumeFactory.GetFilePart(index, part1); + } } if (item != null && item.Exists) + { return item; + } return null; //no more items } diff --git a/src/SharpCompress/Archives/Rar/StreamRarArchiveVolume.cs b/src/SharpCompress/Archives/Rar/StreamRarArchiveVolume.cs index 60cbab9ae..b7ffc67ea 100644 --- a/src/SharpCompress/Archives/Rar/StreamRarArchiveVolume.cs +++ b/src/SharpCompress/Archives/Rar/StreamRarArchiveVolume.cs @@ -14,6 +14,9 @@ internal StreamRarArchiveVolume(Stream stream, ReaderOptions options, int index) internal override IEnumerable ReadFileParts() => GetVolumeFileParts(); + internal override IAsyncEnumerable ReadFilePartsAsync() => + GetVolumeFilePartsAsync(); + internal override RarFilePart CreateFilePart(MarkHeader markHeader, FileHeader fileHeader) => new SeekableFilePart(markHeader, fileHeader, Index, Stream, ReaderOptions.Password); } diff --git a/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Async.cs b/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Async.cs new file mode 100644 index 000000000..f860b62c0 --- /dev/null +++ b/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Async.cs @@ -0,0 +1,73 @@ +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.SevenZip; +using SharpCompress.IO; +using SharpCompress.Readers; + +namespace SharpCompress.Archives.SevenZip; + +public partial class SevenZipArchive +{ + private async ValueTask LoadFactoryAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + if (_database is null) + { + stream.Position = 0; + var reader = new ArchiveReader(); + await reader.OpenAsync( + stream, + lookForHeader: ReaderOptions.LookForHeader, + cancellationToken + ); + _database = await reader.ReadDatabaseAsync( + new PasswordProvider(ReaderOptions.Password), + cancellationToken + ); + } + } + + protected override async IAsyncEnumerable LoadEntriesAsync( + IAsyncEnumerable volumes + ) + { + var stream = (await volumes.SingleAsync()).Stream; + await LoadFactoryAsync(stream); + if (_database is null) + { + yield break; + } + var entries = new SevenZipArchiveEntry[_database._files.Count]; + for (var i = 0; i < _database._files.Count; i++) + { + var file = _database._files[i]; + entries[i] = new SevenZipArchiveEntry( + this, + new SevenZipFilePart(stream, _database, i, file, ReaderOptions.ArchiveEncoding) + ); + } + foreach (var group in entries.Where(x => !x.IsDirectory).GroupBy(x => x.FilePart.Folder)) + { + var isSolid = false; + foreach (var entry in group) + { + entry.IsSolid = isSolid; + isSolid = true; + } + } + + foreach (var entry in entries) + { + yield return entry; + } + } + + protected override ValueTask CreateReaderForSolidExtractionAsync() => + new(new SevenZipReader(ReaderOptions, this)); +} diff --git a/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Factory.cs b/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Factory.cs index 2abb00ab4..614c44088 100644 --- a/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Factory.cs +++ b/src/SharpCompress/Archives/SevenZip/SevenZipArchive.Factory.cs @@ -1,12 +1,10 @@ using System; +using System.Buffers; using System.Collections.Generic; using System.IO; using System.Linq; using System.Threading; using System.Threading.Tasks; -using SharpCompress.Common; -using SharpCompress.Common.SevenZip; -using SharpCompress.Compressors.LZMA.Utilites; using SharpCompress.IO; using SharpCompress.Readers; @@ -157,13 +155,56 @@ public static bool IsSevenZipFile(Stream stream) } } - private static ReadOnlySpan Signature => - new byte[] { (byte)'7', (byte)'z', 0xBC, 0xAF, 0x27, 0x1C }; + public static async ValueTask IsSevenZipFileAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + try + { + return await SignatureMatchAsync(stream, cancellationToken); + } + catch + { + return false; + } + } + + private static ReadOnlySpan Signature => [(byte)'7', (byte)'z', 0xBC, 0xAF, 0x27, 0x1C]; private static bool SignatureMatch(Stream stream) { - var reader = new BinaryReader(stream); - ReadOnlySpan signatureBytes = reader.ReadBytes(6); - return signatureBytes.SequenceEqual(Signature); + var buffer = ArrayPool.Shared.Rent(6); + try + { + stream.ReadExact(buffer, 0, 6); + return buffer.AsSpan().Slice(0, 6).SequenceEqual(Signature); + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private static async ValueTask SignatureMatchAsync( + Stream stream, + CancellationToken cancellationToken + ) + { + var buffer = ArrayPool.Shared.Rent(6); + try + { + if (!await stream.ReadFullyAsync(buffer, 0, 6, cancellationToken).ConfigureAwait(false)) + { + return false; + } + + return buffer.AsSpan().Slice(0, 6).SequenceEqual(Signature); + } + finally + { + ArrayPool.Shared.Return(buffer); + } } } diff --git a/src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs b/src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs index 328d5e33c..799644d84 100644 --- a/src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs +++ b/src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs @@ -32,32 +32,45 @@ protected override IEnumerable LoadEntries( IEnumerable volumes ) { - var stream = volumes.Single().Stream; - LoadFactory(stream); - if (_database is null) - { - return Enumerable.Empty(); - } - var entries = new SevenZipArchiveEntry[_database._files.Count]; - for (var i = 0; i < _database._files.Count; i++) - { - var file = _database._files[i]; - entries[i] = new SevenZipArchiveEntry( - this, - new SevenZipFilePart(stream, _database, i, file, ReaderOptions.ArchiveEncoding) - ); - } - foreach (var group in entries.Where(x => !x.IsDirectory).GroupBy(x => x.FilePart.Folder)) + foreach (var volume in volumes) { - var isSolid = false; - foreach (var entry in group) + LoadFactory(volume.Stream); + if (_database is null) { - entry.IsSolid = isSolid; - isSolid = true; + yield break; + } + var entries = new SevenZipArchiveEntry[_database._files.Count]; + for (var i = 0; i < _database._files.Count; i++) + { + var file = _database._files[i]; + entries[i] = new SevenZipArchiveEntry( + this, + new SevenZipFilePart( + volume.Stream, + _database, + i, + file, + ReaderOptions.ArchiveEncoding + ) + ); + } + foreach ( + var group in entries.Where(x => !x.IsDirectory).GroupBy(x => x.FilePart.Folder) + ) + { + var isSolid = false; + foreach (var entry in group) + { + entry.IsSolid = isSolid; + isSolid = true; + } } - } - return entries; + foreach (var entry in entries) + { + yield return entry; + } + } } private void LoadFactory(Stream stream) @@ -74,9 +87,6 @@ private void LoadFactory(Stream stream) protected override IReader CreateReaderForSolidExtraction() => new SevenZipReader(ReaderOptions, this); - protected override ValueTask CreateReaderForSolidExtractionAsync() => - new(new SevenZipReader(ReaderOptions, this)); - public override bool IsSolid => Entries .Where(x => !x.IsDirectory) diff --git a/src/SharpCompress/Archives/Tar/TarArchive.Async.cs b/src/SharpCompress/Archives/Tar/TarArchive.Async.cs new file mode 100644 index 000000000..b83036e2f --- /dev/null +++ b/src/SharpCompress/Archives/Tar/TarArchive.Async.cs @@ -0,0 +1,161 @@ +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Tar; +using SharpCompress.Common.Tar.Headers; +using SharpCompress.IO; +using SharpCompress.Readers; +using SharpCompress.Readers.Tar; +using SharpCompress.Writers; +using SharpCompress.Writers.Tar; + +namespace SharpCompress.Archives.Tar; + +public partial class TarArchive +{ + protected override async ValueTask SaveToAsync( + Stream stream, + WriterOptions options, + IAsyncEnumerable oldEntries, + IEnumerable newEntries, + CancellationToken cancellationToken = default + ) + { + using var writer = new TarWriter(stream, new TarWriterOptions(options)); + await foreach ( + var entry in oldEntries.WithCancellation(cancellationToken).ConfigureAwait(false) + ) + { + if (entry.IsDirectory) + { + await writer + .WriteDirectoryAsync( + entry.Key.NotNull("Entry Key is null"), + entry.LastModifiedTime, + cancellationToken + ) + .ConfigureAwait(false); + } + else + { + using var entryStream = entry.OpenEntryStream(); + await writer + .WriteAsync( + entry.Key.NotNull("Entry Key is null"), + entryStream, + entry.LastModifiedTime, + entry.Size, + cancellationToken + ) + .ConfigureAwait(false); + } + } + foreach (var entry in newEntries) + { + if (entry.IsDirectory) + { + await writer + .WriteDirectoryAsync( + entry.Key.NotNull("Entry Key is null"), + entry.LastModifiedTime, + cancellationToken + ) + .ConfigureAwait(false); + } + else + { + using var entryStream = entry.OpenEntryStream(); + await writer + .WriteAsync( + entry.Key.NotNull("Entry Key is null"), + entryStream, + entry.LastModifiedTime, + entry.Size, + cancellationToken + ) + .ConfigureAwait(false); + } + } + } + + protected override ValueTask CreateReaderForSolidExtractionAsync() + { + var stream = Volumes.Single().Stream; + stream.Position = 0; + return new((IAsyncReader)TarReader.OpenReader(stream)); + } + + protected override async IAsyncEnumerable LoadEntriesAsync( + IAsyncEnumerable volumes + ) + { + var stream = (await volumes.SingleAsync()).Stream; + if (stream.CanSeek) + { + stream.Position = 0; + } + + // Always use async header reading in LoadEntriesAsync for consistency + { + // Use async header reading for async-only streams + TarHeader? previousHeader = null; + await foreach ( + var header in TarHeaderFactory.ReadHeaderAsync( + StreamingMode.Seekable, + stream, + ReaderOptions.ArchiveEncoding + ) + ) + { + if (header != null) + { + if (header.EntryType == EntryType.LongName) + { + previousHeader = header; + } + else + { + if (previousHeader != null) + { + var entry = new TarArchiveEntry( + this, + new TarFilePart(previousHeader, stream), + CompressionType.None + ); + + var oldStreamPos = stream.Position; + + using (var entryStream = entry.OpenEntryStream()) + { + using var memoryStream = new MemoryStream(); + await entryStream.CopyToAsync(memoryStream); + memoryStream.Position = 0; + var bytes = memoryStream.ToArray(); + + header.Name = ReaderOptions + .ArchiveEncoding.Decode(bytes) + .TrimNulls(); + } + + stream.Position = oldStreamPos; + + previousHeader = null; + } + yield return new TarArchiveEntry( + this, + new TarFilePart(header, stream), + CompressionType.None + ); + } + } + else + { + throw new IncompleteArchiveException("Failed to read TAR header"); + } + } + } + } +} diff --git a/src/SharpCompress/Archives/Tar/TarArchive.Factory.cs b/src/SharpCompress/Archives/Tar/TarArchive.Factory.cs index f6e03f4f8..a1b834e89 100644 --- a/src/SharpCompress/Archives/Tar/TarArchive.Factory.cs +++ b/src/SharpCompress/Archives/Tar/TarArchive.Factory.cs @@ -2,15 +2,13 @@ using System.Collections.Generic; using System.IO; using System.Linq; +using System.Text; using System.Threading; using System.Threading.Tasks; using SharpCompress.Common; -using SharpCompress.Common.Tar; using SharpCompress.Common.Tar.Headers; using SharpCompress.IO; using SharpCompress.Readers; -using SharpCompress.Writers; -using SharpCompress.Writers.Tar; namespace SharpCompress.Archives.Tar; @@ -23,7 +21,7 @@ public partial class TarArchive public static IWritableArchive OpenArchive(string filePath, ReaderOptions? readerOptions = null) { filePath.NotNullOrEmpty(nameof(filePath)); - return OpenArchive(new FileInfo(filePath), readerOptions ?? new ReaderOptions()); + return OpenArchive(new FileInfo(filePath), readerOptions); } public static IWritableArchive OpenArchive( @@ -36,7 +34,7 @@ public static IWritableArchive OpenArchive( new SourceStream( fileInfo, i => ArchiveVolumeFactory.GetFilePart(i, fileInfo), - readerOptions ?? new ReaderOptions() + readerOptions ?? new ReaderOptions() { LeaveStreamOpen = false } ) ); } @@ -52,7 +50,7 @@ public static IWritableArchive OpenArchive( new SourceStream( files[0], i => i < files.Length ? files[i] : null, - readerOptions ?? new ReaderOptions() + readerOptions ?? new ReaderOptions() { LeaveStreamOpen = false } ) ); } @@ -154,15 +152,44 @@ public static bool IsTarFile(Stream stream) try { var tarHeader = new TarHeader(new ArchiveEncoding()); - var readSucceeded = tarHeader.Read(new BinaryReader(stream)); + var reader = new BinaryReader(stream, Encoding.UTF8, false); + var readSucceeded = tarHeader.Read(reader); var isEmptyArchive = tarHeader.Name?.Length == 0 && tarHeader.Size == 0 && Enum.IsDefined(typeof(EntryType), tarHeader.EntryType); return readSucceeded || isEmptyArchive; } - catch { } - return false; + catch (Exception) + { + // Catch all exceptions during tar header reading to determine if this is a valid tar file + // Invalid tar files or corrupted streams will throw various exceptions + return false; + } + } + + public static async ValueTask IsTarFileAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + try + { + var tarHeader = new TarHeader(new ArchiveEncoding()); + var reader = new AsyncBinaryReader(stream, false); + var readSucceeded = await tarHeader.ReadAsync(reader); + var isEmptyArchive = + tarHeader.Name?.Length == 0 + && tarHeader.Size == 0 + && Enum.IsDefined(typeof(EntryType), tarHeader.EntryType); + return readSucceeded || isEmptyArchive; + } + catch (Exception) + { + // Catch all exceptions during tar header reading to determine if this is a valid tar file + // Invalid tar files or corrupted streams will throw various exceptions + return false; + } } public static IWritableArchive CreateArchive() => new TarArchive(); diff --git a/src/SharpCompress/Archives/Tar/TarArchive.cs b/src/SharpCompress/Archives/Tar/TarArchive.cs index 16eddbebf..ded45135e 100644 --- a/src/SharpCompress/Archives/Tar/TarArchive.cs +++ b/src/SharpCompress/Archives/Tar/TarArchive.cs @@ -32,6 +32,10 @@ private TarArchive() protected override IEnumerable LoadEntries(IEnumerable volumes) { var stream = volumes.Single().Stream; + if (stream.CanSeek) + { + stream.Position = 0; + } TarHeader? previousHeader = null; foreach ( var header in TarHeaderFactory.ReadHeader( @@ -139,54 +143,10 @@ IEnumerable newEntries } } - protected override async ValueTask SaveToAsync( - Stream stream, - WriterOptions options, - IEnumerable oldEntries, - IEnumerable newEntries, - CancellationToken cancellationToken = default - ) - { - using var writer = new TarWriter(stream, new TarWriterOptions(options)); - foreach (var entry in oldEntries.Concat(newEntries)) - { - if (entry.IsDirectory) - { - await writer - .WriteDirectoryAsync( - entry.Key.NotNull("Entry Key is null"), - entry.LastModifiedTime, - cancellationToken - ) - .ConfigureAwait(false); - } - else - { - using var entryStream = entry.OpenEntryStream(); - await writer - .WriteAsync( - entry.Key.NotNull("Entry Key is null"), - entryStream, - entry.LastModifiedTime, - entry.Size, - cancellationToken - ) - .ConfigureAwait(false); - } - } - } - protected override IReader CreateReaderForSolidExtraction() { var stream = Volumes.Single().Stream; stream.Position = 0; return TarReader.OpenReader(stream); } - - protected override ValueTask CreateReaderForSolidExtractionAsync() - { - var stream = Volumes.Single().Stream; - stream.Position = 0; - return new((IAsyncReader)TarReader.OpenReader(stream)); - } } diff --git a/src/SharpCompress/Archives/Zip/ZipArchive.Async.cs b/src/SharpCompress/Archives/Zip/ZipArchive.Async.cs new file mode 100644 index 000000000..4cb3991ee --- /dev/null +++ b/src/SharpCompress/Archives/Zip/ZipArchive.Async.cs @@ -0,0 +1,132 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Zip; +using SharpCompress.Common.Zip.Headers; +using SharpCompress.IO; +using SharpCompress.Readers; +using SharpCompress.Writers; +using SharpCompress.Writers.Zip; + +namespace SharpCompress.Archives.Zip; + +public partial class ZipArchive +{ + protected override async IAsyncEnumerable LoadEntriesAsync( + IAsyncEnumerable volumes + ) + { + var vols = await volumes.ToListAsync(); + var volsArray = vols.ToArray(); + + await foreach ( + var h in headerFactory.NotNull().ReadSeekableHeaderAsync(volsArray.Last().Stream) + ) + { + if (h != null) + { + switch (h.ZipHeaderType) + { + case ZipHeaderType.DirectoryEntry: + { + var deh = (DirectoryEntryHeader)h; + Stream s; + if ( + deh.RelativeOffsetOfEntryHeader + deh.CompressedSize + > volsArray[deh.DiskNumberStart].Stream.Length + ) + { + var v = volsArray.Skip(deh.DiskNumberStart).ToArray(); + s = new SourceStream( + v[0].Stream, + i => i < v.Length ? v[i].Stream : null, + new ReaderOptions() { LeaveStreamOpen = true } + ); + } + else + { + s = volsArray[deh.DiskNumberStart].Stream; + } + + yield return new ZipArchiveEntry( + this, + new SeekableZipFilePart(headerFactory.NotNull(), deh, s) + ); + } + break; + case ZipHeaderType.DirectoryEnd: + { + var bytes = ((DirectoryEndHeader)h).Comment ?? Array.Empty(); + volsArray.Last().Comment = ReaderOptions.ArchiveEncoding.Decode(bytes); + yield break; + } + } + } + } + } + + protected override async ValueTask SaveToAsync( + Stream stream, + WriterOptions options, + IAsyncEnumerable oldEntries, + IEnumerable newEntries, + CancellationToken cancellationToken = default + ) + { + using var writer = new ZipWriter(stream, new ZipWriterOptions(options)); + await foreach ( + var entry in oldEntries.WithCancellation(cancellationToken).ConfigureAwait(false) + ) + { + if (entry.IsDirectory) + { + await writer + .WriteDirectoryAsync( + entry.Key.NotNull("Entry Key is null"), + entry.LastModifiedTime, + cancellationToken + ) + .ConfigureAwait(false); + } + else + { + using var entryStream = entry.OpenEntryStream(); + await writer + .WriteAsync( + entry.Key.NotNull("Entry Key is null"), + entryStream, + cancellationToken + ) + .ConfigureAwait(false); + } + } + foreach (var entry in newEntries) + { + if (entry.IsDirectory) + { + await writer + .WriteDirectoryAsync( + entry.Key.NotNull("Entry Key is null"), + entry.LastModifiedTime, + cancellationToken + ) + .ConfigureAwait(false); + } + else + { + using var entryStream = entry.OpenEntryStream(); + await writer + .WriteAsync( + entry.Key.NotNull("Entry Key is null"), + entryStream, + cancellationToken + ) + .ConfigureAwait(false); + } + } + } +} diff --git a/src/SharpCompress/Archives/Zip/ZipArchive.Factory.cs b/src/SharpCompress/Archives/Zip/ZipArchive.Factory.cs index bb51552ed..9cb26e800 100644 --- a/src/SharpCompress/Archives/Zip/ZipArchive.Factory.cs +++ b/src/SharpCompress/Archives/Zip/ZipArchive.Factory.cs @@ -21,7 +21,7 @@ public partial class ZipArchive public static IWritableArchive OpenArchive(string filePath, ReaderOptions? readerOptions = null) { filePath.NotNullOrEmpty(nameof(filePath)); - return OpenArchive(new FileInfo(filePath), readerOptions ?? new ReaderOptions()); + return OpenArchive(new FileInfo(filePath), readerOptions); } public static IWritableArchive OpenArchive( @@ -34,7 +34,7 @@ public static IWritableArchive OpenArchive( new SourceStream( fileInfo, i => ZipArchiveVolumeFactory.GetFilePart(i, fileInfo), - readerOptions ?? new ReaderOptions() + readerOptions ?? new ReaderOptions() { LeaveStreamOpen = false } ) ); } @@ -50,7 +50,7 @@ public static IWritableArchive OpenArchive( new SourceStream( files[0], i => i < files.Length ? files[i] : null, - readerOptions ?? new ReaderOptions() + readerOptions ?? new ReaderOptions() { LeaveStreamOpen = false } ) ); } @@ -210,7 +210,7 @@ public static bool IsZipMulti( if (stream.CanSeek) { var z = new SeekableZipHeaderFactory(password, new ArchiveEncoding()); - var x = z.ReadSeekableHeader(stream, useSync: true).FirstOrDefault(); + var x = z.ReadSeekableHeader(stream).FirstOrDefault(); return x?.ZipHeaderType == ZipHeaderType.DirectoryEntry; } else diff --git a/src/SharpCompress/Archives/Zip/ZipArchive.cs b/src/SharpCompress/Archives/Zip/ZipArchive.cs index 9e2d80e11..c1acb69a1 100644 --- a/src/SharpCompress/Archives/Zip/ZipArchive.cs +++ b/src/SharpCompress/Archives/Zip/ZipArchive.cs @@ -41,9 +41,16 @@ protected override IEnumerable LoadVolumes(SourceStream stream) var idx = 0; if (streams.Count() > 1) { - streams[1].Position += 4; - var isZip = IsZipFile(streams[1], ReaderOptions.Password, ReaderOptions.BufferSize); - streams[1].Position -= 4; + //check if second stream is zip header without changing position + var headerProbeStream = streams[1]; + var startPosition = headerProbeStream.Position; + headerProbeStream.Position = startPosition + 4; + var isZip = IsZipFile( + headerProbeStream, + ReaderOptions.Password, + ReaderOptions.BufferSize + ); + headerProbeStream.Position = startPosition; if (isZip) { stream.IsVolumes = true; @@ -62,9 +69,7 @@ protected override IEnumerable LoadVolumes(SourceStream stream) protected override IEnumerable LoadEntries(IEnumerable volumes) { var vols = volumes.ToArray(); - foreach ( - var h in headerFactory.NotNull().ReadSeekableHeader(vols.Last().Stream, useSync: true) - ) + foreach (var h in headerFactory.NotNull().ReadSeekableHeader(vols.Last().Stream)) { if (h != null) { @@ -108,59 +113,6 @@ var h in headerFactory.NotNull().ReadSeekableHeader(vols.Last().Stream, useSync: } } - protected override async IAsyncEnumerable LoadEntriesAsync( - IAsyncEnumerable volumes - ) - { - var vols = await volumes.ToListAsync(); - var volsArray = vols.ToArray(); - - await foreach ( - var h in headerFactory.NotNull().ReadSeekableHeaderAsync(volsArray.Last().Stream) - ) - { - if (h != null) - { - switch (h.ZipHeaderType) - { - case ZipHeaderType.DirectoryEntry: - { - var deh = (DirectoryEntryHeader)h; - Stream s; - if ( - deh.RelativeOffsetOfEntryHeader + deh.CompressedSize - > volsArray[deh.DiskNumberStart].Stream.Length - ) - { - var v = volsArray.Skip(deh.DiskNumberStart).ToArray(); - s = new SourceStream( - v[0].Stream, - i => i < v.Length ? v[i].Stream : null, - new ReaderOptions() { LeaveStreamOpen = true } - ); - } - else - { - s = volsArray[deh.DiskNumberStart].Stream; - } - - yield return new ZipArchiveEntry( - this, - new SeekableZipFilePart(headerFactory.NotNull(), deh, s) - ); - } - break; - case ZipHeaderType.DirectoryEnd: - { - var bytes = ((DirectoryEndHeader)h).Comment ?? Array.Empty(); - volsArray.Last().Comment = ReaderOptions.ArchiveEncoding.Decode(bytes); - yield break; - } - } - } - } - } - public void SaveTo(Stream stream) => SaveTo(stream, new WriterOptions(CompressionType.Deflate)); protected override void SaveTo( @@ -192,41 +144,6 @@ IEnumerable newEntries } } - protected override async ValueTask SaveToAsync( - Stream stream, - WriterOptions options, - IEnumerable oldEntries, - IEnumerable newEntries, - CancellationToken cancellationToken = default - ) - { - using var writer = new ZipWriter(stream, new ZipWriterOptions(options)); - foreach (var entry in oldEntries.Concat(newEntries)) - { - if (entry.IsDirectory) - { - await writer - .WriteDirectoryAsync( - entry.Key.NotNull("Entry Key is null"), - entry.LastModifiedTime, - cancellationToken - ) - .ConfigureAwait(false); - } - else - { - using var entryStream = entry.OpenEntryStream(); - await writer - .WriteAsync( - entry.Key.NotNull("Entry Key is null"), - entryStream, - cancellationToken - ) - .ConfigureAwait(false); - } - } - } - protected override ZipArchiveEntry CreateEntryInternal( string filePath, Stream source, diff --git a/src/SharpCompress/Archives/Zip/ZipArchiveEntry.Async.cs b/src/SharpCompress/Archives/Zip/ZipArchiveEntry.Async.cs new file mode 100644 index 000000000..2d76dcd70 --- /dev/null +++ b/src/SharpCompress/Archives/Zip/ZipArchiveEntry.Async.cs @@ -0,0 +1,22 @@ +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Zip; + +namespace SharpCompress.Archives.Zip; + +public partial class ZipArchiveEntry +{ + public async ValueTask OpenEntryStreamAsync( + CancellationToken cancellationToken = default + ) + { + var part = Parts.Single(); + if (part is SeekableZipFilePart seekablePart) + { + return (await seekablePart.GetCompressedStreamAsync(cancellationToken)).NotNull(); + } + return OpenEntryStream(); + } +} diff --git a/src/SharpCompress/Archives/Zip/ZipArchiveEntry.cs b/src/SharpCompress/Archives/Zip/ZipArchiveEntry.cs index f59da4f66..bf3e67ac2 100644 --- a/src/SharpCompress/Archives/Zip/ZipArchiveEntry.cs +++ b/src/SharpCompress/Archives/Zip/ZipArchiveEntry.cs @@ -6,25 +6,13 @@ namespace SharpCompress.Archives.Zip; -public class ZipArchiveEntry : ZipEntry, IArchiveEntry +public partial class ZipArchiveEntry : ZipEntry, IArchiveEntry { internal ZipArchiveEntry(ZipArchive archive, SeekableZipFilePart? part) : base(part) => Archive = archive; public virtual Stream OpenEntryStream() => Parts.Single().GetCompressedStream().NotNull(); - public async ValueTask OpenEntryStreamAsync( - CancellationToken cancellationToken = default - ) - { - var part = Parts.Single(); - if (part is SeekableZipFilePart seekablePart) - { - return (await seekablePart.GetCompressedStreamAsync(cancellationToken)).NotNull(); - } - return OpenEntryStream(); - } - #region IArchiveEntry Members public IArchive Archive { get; } diff --git a/src/SharpCompress/Archives/Zip/ZipArchiveVolumeFactory.cs b/src/SharpCompress/Archives/Zip/ZipArchiveVolumeFactory.cs index 1b2f093d1..0f0b65173 100644 --- a/src/SharpCompress/Archives/Zip/ZipArchiveVolumeFactory.cs +++ b/src/SharpCompress/Archives/Zip/ZipArchiveVolumeFactory.cs @@ -14,6 +14,7 @@ internal static class ZipArchiveVolumeFactory //new style .zip, z01.. | .zipx, zx01 - if the numbers go beyond 99 then they use 100 ...1000 etc var m = Regex.Match(part1.Name, @"^(.*\.)(zipx?|zx?[0-9]+)$", RegexOptions.IgnoreCase); if (m.Success) + { item = new FileInfo( Path.Combine( part1.DirectoryName!, @@ -24,11 +25,16 @@ internal static class ZipArchiveVolumeFactory ) ) ); + } else //split - 001, 002 ... + { return ArchiveVolumeFactory.GetFilePart(index, part1); + } if (item != null && item.Exists) + { return item; + } return null; //no more items } diff --git a/src/SharpCompress/Common/Ace/AceCrc.cs b/src/SharpCompress/Common/Ace/AceCrc.cs index 8ae43a2b0..f075c6a06 100644 --- a/src/SharpCompress/Common/Ace/AceCrc.cs +++ b/src/SharpCompress/Common/Ace/AceCrc.cs @@ -22,9 +22,13 @@ private static uint[] GenerateTable() for (int j = 0; j < 8; j++) { if ((crc & 1) != 0) + { crc = (crc >> 1) ^ 0xEDB88320u; + } else + { crc >>= 1; + } } table[i] = crc; diff --git a/src/SharpCompress/Common/Ace/Headers/AceFileHeader.Async.cs b/src/SharpCompress/Common/Ace/Headers/AceFileHeader.Async.cs new file mode 100644 index 000000000..07601fdb2 --- /dev/null +++ b/src/SharpCompress/Common/Ace/Headers/AceFileHeader.Async.cs @@ -0,0 +1,111 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Arc; + +namespace SharpCompress.Common.Ace.Headers; + +public sealed partial class AceFileHeader +{ + /// + /// Asynchronously reads the next file entry header from the stream. + /// Returns null if no more entries or end of archive. + /// Supports both ACE 1.0 and ACE 2.0 formats. + /// + public override async ValueTask ReadAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var headerData = await ReadHeaderAsync(stream, cancellationToken); + if (headerData.Length == 0) + { + return null; + } + int offset = 0; + + // Header type (1 byte) + HeaderType = headerData[offset++]; + + // Skip recovery record headers (ACE 2.0 feature) + if (HeaderType == (byte)SharpCompress.Common.Ace.Headers.AceHeaderType.RECOVERY32) + { + // Skip to next header + return null; + } + + if (HeaderType != (byte)SharpCompress.Common.Ace.Headers.AceHeaderType.FILE) + { + // Unknown header type - skip + return null; + } + + // Header flags (2 bytes) + HeaderFlags = BitConverter.ToUInt16(headerData, offset); + offset += 2; + + // Packed size (4 bytes) + PackedSize = BitConverter.ToUInt32(headerData, offset); + offset += 4; + + // Original size (4 bytes) + OriginalSize = BitConverter.ToUInt32(headerData, offset); + offset += 4; + + // File date/time in DOS format (4 bytes) + var dosDateTime = BitConverter.ToUInt32(headerData, offset); + DateTime = ConvertDosDateTime(dosDateTime); + offset += 4; + + // File attributes (4 bytes) + Attributes = (int)BitConverter.ToUInt32(headerData, offset); + offset += 4; + + // CRC32 (4 bytes) + Crc32 = BitConverter.ToUInt32(headerData, offset); + offset += 4; + + // Compression type (1 byte) + byte compressionType = headerData[offset++]; + CompressionType = GetCompressionType(compressionType); + + // Compression quality/parameter (1 byte) + byte compressionQuality = headerData[offset++]; + CompressionQuality = GetCompressionQuality(compressionQuality); + + // Parameters (2 bytes) + Parameters = BitConverter.ToUInt16(headerData, offset); + offset += 2; + + // Reserved (2 bytes) - skip + offset += 2; + + // Filename length (2 bytes) + var filenameLength = BitConverter.ToUInt16(headerData, offset); + offset += 2; + + // Filename + if (offset + filenameLength <= headerData.Length) + { + Filename = ArchiveEncoding.Decode(headerData, offset, filenameLength); + offset += filenameLength; + } + + // Handle comment if present + if ((HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.COMMENT) != 0) + { + // Comment length (2 bytes) + if (offset + 2 <= headerData.Length) + { + ushort commentLength = BitConverter.ToUInt16(headerData, offset); + offset += 2 + commentLength; // Skip comment + } + } + + // Store the data start position + DataStartPosition = stream.Position; + + return this; + } +} diff --git a/src/SharpCompress/Common/Ace/Headers/AceFileHeader.cs b/src/SharpCompress/Common/Ace/Headers/AceFileHeader.cs index 575281710..16aa1e3b9 100644 --- a/src/SharpCompress/Common/Ace/Headers/AceFileHeader.cs +++ b/src/SharpCompress/Common/Ace/Headers/AceFileHeader.cs @@ -2,6 +2,8 @@ using System.Buffers.Binary; using System.Collections.Generic; using System.IO; +using System.Threading; +using System.Threading.Tasks; using System.Xml.Linq; using SharpCompress.Common.Arc; @@ -10,7 +12,7 @@ namespace SharpCompress.Common.Ace.Headers /// /// ACE file entry header /// - public sealed class AceFileHeader : AceHeader + public sealed partial class AceFileHeader : AceHeader { public long DataStartPosition { get; private set; } public long PackedSize { get; set; } @@ -147,6 +149,8 @@ public AceFileHeader(IArchiveEncoding archiveEncoding) return this; } + // ReadAsync moved to AceFileHeader.Async.cs + public CompressionType GetCompressionType(byte value) => value switch { diff --git a/src/SharpCompress/Common/Ace/Headers/AceHeader.Async.cs b/src/SharpCompress/Common/Ace/Headers/AceHeader.Async.cs new file mode 100644 index 000000000..957eb6636 --- /dev/null +++ b/src/SharpCompress/Common/Ace/Headers/AceHeader.Async.cs @@ -0,0 +1,69 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Ace.Headers; + +public abstract partial class AceHeader +{ + public abstract ValueTask ReadAsync( + Stream reader, + CancellationToken cancellationToken = default + ); + + public async ValueTask ReadHeaderAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + // Read header CRC (2 bytes) and header size (2 bytes) + var headerBytes = new byte[4]; + if (await stream.ReadAsync(headerBytes, 0, 4, cancellationToken) != 4) + { + return Array.Empty(); + } + + HeaderCrc = BitConverter.ToUInt16(headerBytes, 0); // CRC for validation + HeaderSize = BitConverter.ToUInt16(headerBytes, 2); + if (HeaderSize == 0) + { + return Array.Empty(); + } + + // Read the header data + var body = new byte[HeaderSize]; + if (await stream.ReadAsync(body, 0, HeaderSize, cancellationToken) != HeaderSize) + { + return Array.Empty(); + } + + // Verify crc + var checksum = AceCrc.AceCrc16(body); + if (checksum != HeaderCrc) + { + throw new InvalidDataException("Header checksum is invalid"); + } + return body; + } + + /// + /// Asynchronously checks if the stream is an ACE archive + /// + /// The stream to read from + /// Cancellation token + /// True if the stream is an ACE archive, false otherwise + public static async ValueTask IsArchiveAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var bytes = new byte[14]; + if (await stream.ReadAsync(bytes, 0, 14, cancellationToken) != 14) + { + return false; + } + + return CheckMagicBytes(bytes, 7); + } +} diff --git a/src/SharpCompress/Common/Ace/Headers/AceHeader.cs b/src/SharpCompress/Common/Ace/Headers/AceHeader.cs index e51d11e5b..b5f1f18cf 100644 --- a/src/SharpCompress/Common/Ace/Headers/AceHeader.cs +++ b/src/SharpCompress/Common/Ace/Headers/AceHeader.cs @@ -1,5 +1,7 @@ using System; using System.IO; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common.Arj.Headers; using SharpCompress.Crypto; @@ -17,7 +19,7 @@ public enum AceHeaderType RECOVERY64B = 4, } - public abstract class AceHeader + public abstract partial class AceHeader { // ACE signature: bytes at offset 7 should be "**ACE**" private static readonly byte[] AceSignature = @@ -58,6 +60,8 @@ public AceHeader(IArchiveEncoding archiveEncoding, AceHeaderType type) public abstract AceHeader? Read(Stream reader); + // Async methods moved to AceHeader.Async.cs + public byte[] ReadHeader(Stream stream) { // Read header CRC (2 bytes) and header size (2 bytes) diff --git a/src/SharpCompress/Common/Ace/Headers/AceMainHeader.Async.cs b/src/SharpCompress/Common/Ace/Headers/AceMainHeader.Async.cs new file mode 100644 index 000000000..10b3f0225 --- /dev/null +++ b/src/SharpCompress/Common/Ace/Headers/AceMainHeader.Async.cs @@ -0,0 +1,83 @@ +using System; +using System.Buffers.Binary; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Crypto; + +namespace SharpCompress.Common.Ace.Headers; + +public sealed partial class AceMainHeader +{ + /// + /// Asynchronously reads the main archive header from the stream. + /// Returns header if this is a valid ACE archive. + /// Supports both ACE 1.0 and ACE 2.0 formats. + /// + public override async ValueTask ReadAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var headerData = await ReadHeaderAsync(stream, cancellationToken); + if (headerData.Length == 0) + { + return null; + } + int offset = 0; + + // Header type should be 0 for main header + if (headerData[offset++] != HeaderType) + { + return null; + } + + // Header flags (2 bytes) + HeaderFlags = BitConverter.ToUInt16(headerData, offset); + offset += 2; + + // Skip signature "**ACE**" (7 bytes) + if (!CheckMagicBytes(headerData, offset)) + { + throw new InvalidDataException("Invalid ACE archive signature."); + } + offset += 7; + + // ACE version (1 byte) - 10 for ACE 1.0, 20 for ACE 2.0 + AceVersion = headerData[offset++]; + ExtractVersion = headerData[offset++]; + + // Host OS (1 byte) + if (offset < headerData.Length) + { + var hostOsByte = headerData[offset++]; + HostOS = hostOsByte <= 11 ? (HostOS)hostOsByte : HostOS.Unknown; + } + // Volume number (1 byte) + VolumeNumber = headerData[offset++]; + + // Creation date/time (4 bytes) + var dosDateTime = BitConverter.ToUInt32(headerData, offset); + DateTime = ConvertDosDateTime(dosDateTime); + offset += 4; + + // Reserved fields (8 bytes) + if (offset + 8 <= headerData.Length) + { + offset += 8; + } + + // Skip additional fields based on flags + // Handle comment if present + if ((HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.COMMENT) != 0) + { + if (offset + 2 <= headerData.Length) + { + ushort commentLength = BitConverter.ToUInt16(headerData, offset); + offset += 2 + commentLength; + } + } + + return this; + } +} diff --git a/src/SharpCompress/Common/Ace/Headers/AceMainHeader.cs b/src/SharpCompress/Common/Ace/Headers/AceMainHeader.cs index f05706056..7b189cd60 100644 --- a/src/SharpCompress/Common/Ace/Headers/AceMainHeader.cs +++ b/src/SharpCompress/Common/Ace/Headers/AceMainHeader.cs @@ -2,6 +2,8 @@ using System.Buffers.Binary; using System.Collections.Generic; using System.IO; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common.Ace.Headers; using SharpCompress.Common.Zip.Headers; using SharpCompress.Crypto; @@ -11,7 +13,7 @@ namespace SharpCompress.Common.Ace.Headers /// /// ACE main archive header /// - public sealed class AceMainHeader : AceHeader + public sealed partial class AceMainHeader : AceHeader { public byte ExtractVersion { get; set; } public byte CreatorVersion { get; set; } @@ -93,5 +95,7 @@ public AceMainHeader(IArchiveEncoding archiveEncoding) return this; } + + // ReadAsync moved to AceMainHeader.Async.cs } } diff --git a/src/SharpCompress/Common/Arj/Headers/ArjHeader.Async.cs b/src/SharpCompress/Common/Arj/Headers/ArjHeader.Async.cs new file mode 100644 index 000000000..8f4554449 --- /dev/null +++ b/src/SharpCompress/Common/Arj/Headers/ArjHeader.Async.cs @@ -0,0 +1,132 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Crypto; + +namespace SharpCompress.Common.Arj.Headers; + +public abstract partial class ArjHeader +{ + public abstract ValueTask ReadAsync( + Stream reader, + CancellationToken cancellationToken = default + ); + + public async ValueTask ReadHeaderAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + // check for magic bytes + var magic = new byte[2]; + if (await stream.ReadAsync(magic, 0, 2, cancellationToken) != 2) + { + return Array.Empty(); + } + + if (!CheckMagicBytes(magic)) + { + throw new InvalidDataException("Not an ARJ file (wrong magic bytes)"); + } + + // read header_size + byte[] headerBytes = new byte[2]; + await stream.ReadAsync(headerBytes, 0, 2, cancellationToken); + var headerSize = (ushort)(headerBytes[0] | headerBytes[1] << 8); + if (headerSize < 1) + { + return Array.Empty(); + } + + var body = new byte[headerSize]; + var read = await stream.ReadAsync(body, 0, headerSize, cancellationToken); + if (read < headerSize) + { + return Array.Empty(); + } + + byte[] crc = new byte[4]; + read = await stream.ReadAsync(crc, 0, 4, cancellationToken); + var checksum = Crc32Stream.Compute(body); + // Compute the hash value + if (checksum != BitConverter.ToUInt32(crc, 0)) + { + throw new InvalidDataException("Header checksum is invalid"); + } + return body; + } + + protected async ValueTask> ReadExtendedHeadersAsync( + Stream reader, + CancellationToken cancellationToken = default + ) + { + List extendedHeader = new List(); + byte[] buffer = new byte[2]; + + while (true) + { + int bytesRead = await reader.ReadAsync(buffer, 0, 2, cancellationToken); + if (bytesRead < 2) + { + throw new EndOfStreamException( + "Unexpected end of stream while reading extended header size." + ); + } + + var extHeaderSize = (ushort)(buffer[0] | (buffer[1] << 8)); + if (extHeaderSize == 0) + { + return extendedHeader; + } + + byte[] header = new byte[extHeaderSize]; + bytesRead = await reader.ReadAsync(header, 0, extHeaderSize, cancellationToken); + if (bytesRead < extHeaderSize) + { + throw new EndOfStreamException( + "Unexpected end of stream while reading extended header data." + ); + } + + byte[] crcextended = new byte[4]; + bytesRead = await reader.ReadAsync(crcextended, 0, 4, cancellationToken); + if (bytesRead < 4) + { + throw new EndOfStreamException( + "Unexpected end of stream while reading extended header CRC." + ); + } + + var checksum = Crc32Stream.Compute(header); + if (checksum != BitConverter.ToUInt32(crcextended, 0)) + { + throw new InvalidDataException("Extended header checksum is invalid"); + } + + extendedHeader.Add(header); + } + } + + /// + /// Asynchronously checks if the stream is an ARJ archive + /// + /// The stream to read from + /// Cancellation token + /// True if the stream is an ARJ archive, false otherwise + public static async ValueTask IsArchiveAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var bytes = new byte[2]; + if (await stream.ReadAsync(bytes, 0, 2, cancellationToken) != 2) + { + return false; + } + + return CheckMagicBytes(bytes); + } +} diff --git a/src/SharpCompress/Common/Arj/Headers/ArjHeader.cs b/src/SharpCompress/Common/Arj/Headers/ArjHeader.cs index 142aca5bb..dd7ca4026 100644 --- a/src/SharpCompress/Common/Arj/Headers/ArjHeader.cs +++ b/src/SharpCompress/Common/Arj/Headers/ArjHeader.cs @@ -3,6 +3,7 @@ using System.IO; using System.Linq; using System.Text; +using System.Threading; using System.Threading.Tasks; using SharpCompress.Common.Zip.Headers; using SharpCompress.Crypto; @@ -15,7 +16,7 @@ public enum ArjHeaderType LocalHeader, } - public abstract class ArjHeader + public abstract partial class ArjHeader { private const int FIRST_HDR_SIZE = 34; private const ushort ARJ_MAGIC = 0xEA60; @@ -31,6 +32,8 @@ public ArjHeader(ArjHeaderType type) public abstract ArjHeader? Read(Stream reader); + // Async methods moved to ArjHeader.Async.cs + public byte[] ReadHeader(Stream stream) { // check for magic bytes @@ -72,6 +75,8 @@ public byte[] ReadHeader(Stream stream) return body; } + // ReadHeaderAsync moved to ArjHeader.Async.cs + protected List ReadExtendedHeaders(Stream reader) { List extendedHeader = new List(); diff --git a/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.Async.cs b/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.Async.cs new file mode 100644 index 000000000..eda70ae13 --- /dev/null +++ b/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.Async.cs @@ -0,0 +1,24 @@ +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Arj.Headers; + +public partial class ArjLocalHeader +{ + public override async ValueTask ReadAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var body = await ReadHeaderAsync(stream, cancellationToken); + if (body.Length > 0) + { + await ReadExtendedHeadersAsync(stream, cancellationToken); + var header = LoadFrom(body); + header.DataStartPosition = stream.Position; + return header; + } + return null; + } +} diff --git a/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.cs b/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.cs index f790b4959..a16596dfb 100644 --- a/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.cs +++ b/src/SharpCompress/Common/Arj/Headers/ArjLocalHeader.cs @@ -4,11 +4,12 @@ using System.Linq; using System.Runtime.CompilerServices; using System.Text; +using System.Threading; using System.Threading.Tasks; namespace SharpCompress.Common.Arj.Headers { - public class ArjLocalHeader : ArjHeader + public partial class ArjLocalHeader : ArjHeader { public ArchiveEncoding ArchiveEncoding { get; } public long DataStartPosition { get; protected set; } @@ -55,6 +56,8 @@ public ArjLocalHeader(ArchiveEncoding archiveEncoding) return null; } + // ReadAsync moved to ArjLocalHeader.Async.cs + public ArjLocalHeader LoadFrom(byte[] headerBytes) { int offset = 0; diff --git a/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.Async.cs b/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.Async.cs new file mode 100644 index 000000000..cc0592f84 --- /dev/null +++ b/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.Async.cs @@ -0,0 +1,18 @@ +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Arj.Headers; + +public partial class ArjMainHeader +{ + public override async ValueTask ReadAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var body = await ReadHeaderAsync(stream, cancellationToken); + await ReadExtendedHeadersAsync(stream, cancellationToken); + return LoadFrom(body); + } +} diff --git a/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.cs b/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.cs index 6ba2b83c6..6fb138962 100644 --- a/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.cs +++ b/src/SharpCompress/Common/Arj/Headers/ArjMainHeader.cs @@ -1,12 +1,14 @@ using System; using System.IO; using System.Text; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Compressors.Deflate; using SharpCompress.Crypto; namespace SharpCompress.Common.Arj.Headers { - public class ArjMainHeader : ArjHeader + public partial class ArjMainHeader : ArjHeader { private const int FIRST_HDR_SIZE = 34; private const ushort ARJ_MAGIC = 0xEA60; @@ -45,6 +47,8 @@ public ArjMainHeader(ArchiveEncoding archiveEncoding) return LoadFrom(body); } + // ReadAsync moved to ArjMainHeader.Async.cs + public ArjMainHeader LoadFrom(byte[] headerBytes) { var offset = 1; diff --git a/src/SharpCompress/Common/AsyncBinaryReader.cs b/src/SharpCompress/Common/AsyncBinaryReader.cs index f2cdb4a65..39e1b7190 100644 --- a/src/SharpCompress/Common/AsyncBinaryReader.cs +++ b/src/SharpCompress/Common/AsyncBinaryReader.cs @@ -16,6 +16,11 @@ public sealed class AsyncBinaryReader : IDisposable public AsyncBinaryReader(Stream stream, bool leaveOpen = false, int bufferSize = 4096) { + if (!stream.CanRead) + { + throw new ArgumentException("Stream must be readable."); + } + _originalStream = stream ?? throw new ArgumentNullException(nameof(stream)); _leaveOpen = leaveOpen; diff --git a/src/SharpCompress/Common/EntryStream.Async.cs b/src/SharpCompress/Common/EntryStream.Async.cs new file mode 100644 index 000000000..21708a893 --- /dev/null +++ b/src/SharpCompress/Common/EntryStream.Async.cs @@ -0,0 +1,84 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Common; + +public partial class EntryStream +{ + /// + /// Asynchronously skip the rest of the entry stream. + /// + public async ValueTask SkipEntryAsync(CancellationToken cancellationToken = default) + { + await this.SkipAsync(cancellationToken).ConfigureAwait(false); + _completed = true; + } + +#if !LEGACY_DOTNET + public override async ValueTask DisposeAsync() + { + if (_isDisposed) + { + return; + } + _isDisposed = true; + if (!(_completed || _reader.Cancelled)) + { + await SkipEntryAsync().ConfigureAwait(false); + } + + //Need a safe standard approach to this - it's okay for compression to overreads. Handling needs to be standardised + if (_stream is IStreamStack ss) + { + if (ss.BaseStream() is SharpCompress.Compressors.Deflate.DeflateStream deflateStream) + { + await deflateStream.FlushAsync().ConfigureAwait(false); + } + else if (ss.BaseStream() is SharpCompress.Compressors.LZMA.LzmaStream lzmaStream) + { + await lzmaStream.FlushAsync().ConfigureAwait(false); + } + } +#if DEBUG_STREAMS + this.DebugDispose(typeof(EntryStream)); +#endif + await base.DisposeAsync().ConfigureAwait(false); + await _stream.DisposeAsync().ConfigureAwait(false); + } +#endif + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + var read = await _stream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + if (read <= 0) + { + _completed = true; + } + return read; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var read = await _stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + if (read <= 0) + { + _completed = true; + } + return read; + } +#endif +} diff --git a/src/SharpCompress/Common/EntryStream.cs b/src/SharpCompress/Common/EntryStream.cs index e4de4ca9a..1398d08b4 100644 --- a/src/SharpCompress/Common/EntryStream.cs +++ b/src/SharpCompress/Common/EntryStream.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Common; -public class EntryStream : Stream, IStreamStack +public partial class EntryStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -53,15 +53,6 @@ public void SkipEntry() _completed = true; } - /// - /// Asynchronously skip the rest of the entry stream. - /// - public async ValueTask SkipEntryAsync(CancellationToken cancellationToken = default) - { - await this.SkipAsync(cancellationToken).ConfigureAwait(false); - _completed = true; - } - protected override void Dispose(bool disposing) { if (_isDisposed) @@ -93,39 +84,6 @@ protected override void Dispose(bool disposing) _stream.Dispose(); } -#if !LEGACY_DOTNET - public override async ValueTask DisposeAsync() - { - if (_isDisposed) - { - return; - } - _isDisposed = true; - if (!(_completed || _reader.Cancelled)) - { - await SkipEntryAsync().ConfigureAwait(false); - } - - //Need a safe standard approach to this - it's okay for compression to overreads. Handling needs to be standardised - if (_stream is IStreamStack ss) - { - if (ss.BaseStream() is SharpCompress.Compressors.Deflate.DeflateStream deflateStream) - { - await deflateStream.FlushAsync().ConfigureAwait(false); - } - else if (ss.BaseStream() is SharpCompress.Compressors.LZMA.LzmaStream lzmaStream) - { - await lzmaStream.FlushAsync().ConfigureAwait(false); - } - } -#if DEBUG_STREAMS - this.DebugDispose(typeof(EntryStream)); -#endif - await base.DisposeAsync().ConfigureAwait(false); - await _stream.DisposeAsync().ConfigureAwait(false); - } -#endif - public override bool CanRead => true; public override bool CanSeek => false; @@ -154,38 +112,6 @@ public override int Read(byte[] buffer, int offset, int count) return read; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - var read = await _stream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - if (read <= 0) - { - _completed = true; - } - return read; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - var read = await _stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - if (read <= 0) - { - _completed = true; - } - return read; - } -#endif - public override int ReadByte() { var value = _stream.ReadByte(); diff --git a/src/SharpCompress/Common/ExtractionMethods.Async.cs b/src/SharpCompress/Common/ExtractionMethods.Async.cs new file mode 100644 index 000000000..b56538773 --- /dev/null +++ b/src/SharpCompress/Common/ExtractionMethods.Async.cs @@ -0,0 +1,116 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common; + +internal static partial class ExtractionMethods +{ + public static async ValueTask WriteEntryToDirectoryAsync( + IEntry entry, + string destinationDirectory, + ExtractionOptions? options, + Func writeAsync, + CancellationToken cancellationToken = default + ) + { + string destinationFileName; + var fullDestinationDirectoryPath = Path.GetFullPath(destinationDirectory); + + //check for trailing slash. + if ( + fullDestinationDirectoryPath[fullDestinationDirectoryPath.Length - 1] + != Path.DirectorySeparatorChar + ) + { + fullDestinationDirectoryPath += Path.DirectorySeparatorChar; + } + + if (!Directory.Exists(fullDestinationDirectoryPath)) + { + throw new ExtractionException( + $"Directory does not exist to extract to: {fullDestinationDirectoryPath}" + ); + } + + options ??= new ExtractionOptions() { Overwrite = true }; + + var file = Path.GetFileName(entry.Key.NotNull("Entry Key is null")).NotNull("File is null"); + file = Utility.ReplaceInvalidFileNameChars(file); + if (options.ExtractFullPath) + { + var folder = Path.GetDirectoryName(entry.Key.NotNull("Entry Key is null")) + .NotNull("Directory is null"); + var destdir = Path.GetFullPath(Path.Combine(fullDestinationDirectoryPath, folder)); + + if (!Directory.Exists(destdir)) + { + if (!destdir.StartsWith(fullDestinationDirectoryPath, PathComparison)) + { + throw new ExtractionException( + "Entry is trying to create a directory outside of the destination directory." + ); + } + + Directory.CreateDirectory(destdir); + } + destinationFileName = Path.Combine(destdir, file); + } + else + { + destinationFileName = Path.Combine(fullDestinationDirectoryPath, file); + } + + if (!entry.IsDirectory) + { + destinationFileName = Path.GetFullPath(destinationFileName); + + if (!destinationFileName.StartsWith(fullDestinationDirectoryPath, PathComparison)) + { + throw new ExtractionException( + "Entry is trying to write a file outside of the destination directory." + ); + } + await writeAsync(destinationFileName, options, cancellationToken).ConfigureAwait(false); + } + else if (options.ExtractFullPath && !Directory.Exists(destinationFileName)) + { + Directory.CreateDirectory(destinationFileName); + } + } + + public static async ValueTask WriteEntryToFileAsync( + IEntry entry, + string destinationFileName, + ExtractionOptions? options, + Func openAndWriteAsync, + CancellationToken cancellationToken = default + ) + { + if (entry.LinkTarget != null) + { + if (options?.WriteSymbolicLink is null) + { + throw new ExtractionException( + "Entry is a symbolic link but ExtractionOptions.WriteSymbolicLink delegate is null" + ); + } + options.WriteSymbolicLink(destinationFileName, entry.LinkTarget); + } + else + { + var fm = FileMode.Create; + options ??= new ExtractionOptions() { Overwrite = true }; + + if (!options.Overwrite) + { + fm = FileMode.CreateNew; + } + + await openAndWriteAsync(destinationFileName, fm, cancellationToken) + .ConfigureAwait(false); + entry.PreserveExtractionOptions(destinationFileName, options); + } + } +} diff --git a/src/SharpCompress/Common/ExtractionMethods.cs b/src/SharpCompress/Common/ExtractionMethods.cs index 787771de9..db6719f7a 100644 --- a/src/SharpCompress/Common/ExtractionMethods.cs +++ b/src/SharpCompress/Common/ExtractionMethods.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Common; -internal static class ExtractionMethods +internal static partial class ExtractionMethods { /// /// Gets the appropriate StringComparison for path checks based on the file system. @@ -123,111 +123,4 @@ Action openAndWrite entry.PreserveExtractionOptions(destinationFileName, options); } } - - public static async ValueTask WriteEntryToDirectoryAsync( - IEntry entry, - string destinationDirectory, - ExtractionOptions? options, - Func writeAsync, - CancellationToken cancellationToken = default - ) - { - string destinationFileName; - var fullDestinationDirectoryPath = Path.GetFullPath(destinationDirectory); - - //check for trailing slash. - if ( - fullDestinationDirectoryPath[fullDestinationDirectoryPath.Length - 1] - != Path.DirectorySeparatorChar - ) - { - fullDestinationDirectoryPath += Path.DirectorySeparatorChar; - } - - if (!Directory.Exists(fullDestinationDirectoryPath)) - { - throw new ExtractionException( - $"Directory does not exist to extract to: {fullDestinationDirectoryPath}" - ); - } - - options ??= new ExtractionOptions() { Overwrite = true }; - - var file = Path.GetFileName(entry.Key.NotNull("Entry Key is null")).NotNull("File is null"); - file = Utility.ReplaceInvalidFileNameChars(file); - if (options.ExtractFullPath) - { - var folder = Path.GetDirectoryName(entry.Key.NotNull("Entry Key is null")) - .NotNull("Directory is null"); - var destdir = Path.GetFullPath(Path.Combine(fullDestinationDirectoryPath, folder)); - - if (!Directory.Exists(destdir)) - { - if (!destdir.StartsWith(fullDestinationDirectoryPath, PathComparison)) - { - throw new ExtractionException( - "Entry is trying to create a directory outside of the destination directory." - ); - } - - Directory.CreateDirectory(destdir); - } - destinationFileName = Path.Combine(destdir, file); - } - else - { - destinationFileName = Path.Combine(fullDestinationDirectoryPath, file); - } - - if (!entry.IsDirectory) - { - destinationFileName = Path.GetFullPath(destinationFileName); - - if (!destinationFileName.StartsWith(fullDestinationDirectoryPath, PathComparison)) - { - throw new ExtractionException( - "Entry is trying to write a file outside of the destination directory." - ); - } - await writeAsync(destinationFileName, options, cancellationToken).ConfigureAwait(false); - } - else if (options.ExtractFullPath && !Directory.Exists(destinationFileName)) - { - Directory.CreateDirectory(destinationFileName); - } - } - - public static async ValueTask WriteEntryToFileAsync( - IEntry entry, - string destinationFileName, - ExtractionOptions? options, - Func openAndWriteAsync, - CancellationToken cancellationToken = default - ) - { - if (entry.LinkTarget != null) - { - if (options?.WriteSymbolicLink is null) - { - throw new ExtractionException( - "Entry is a symbolic link but ExtractionOptions.WriteSymbolicLink delegate is null" - ); - } - options.WriteSymbolicLink(destinationFileName, entry.LinkTarget); - } - else - { - var fm = FileMode.Create; - options ??= new ExtractionOptions() { Overwrite = true }; - - if (!options.Overwrite) - { - fm = FileMode.CreateNew; - } - - await openAndWriteAsync(destinationFileName, fm, cancellationToken) - .ConfigureAwait(false); - entry.PreserveExtractionOptions(destinationFileName, options); - } - } } diff --git a/src/SharpCompress/Common/GZip/GZipEntry.Async.cs b/src/SharpCompress/Common/GZip/GZipEntry.Async.cs new file mode 100644 index 000000000..6f304f947 --- /dev/null +++ b/src/SharpCompress/Common/GZip/GZipEntry.Async.cs @@ -0,0 +1,15 @@ +using System.Collections.Generic; +using System.IO; + +namespace SharpCompress.Common.GZip; + +public partial class GZipEntry +{ + internal static async IAsyncEnumerable GetEntriesAsync( + Stream stream, + OptionsBase options + ) + { + yield return new GZipEntry(await GZipFilePart.CreateAsync(stream, options.ArchiveEncoding)); + } +} diff --git a/src/SharpCompress/Common/GZip/GZipEntry.cs b/src/SharpCompress/Common/GZip/GZipEntry.cs index c0cc6b107..12d0d6e6e 100644 --- a/src/SharpCompress/Common/GZip/GZipEntry.cs +++ b/src/SharpCompress/Common/GZip/GZipEntry.cs @@ -4,7 +4,7 @@ namespace SharpCompress.Common.GZip; -public class GZipEntry : Entry +public partial class GZipEntry : Entry { private readonly GZipFilePart? _filePart; @@ -42,4 +42,6 @@ internal static IEnumerable GetEntries(Stream stream, OptionsBase opt { yield return new GZipEntry(GZipFilePart.Create(stream, options.ArchiveEncoding)); } + + // Async methods moved to GZipEntry.Async.cs } diff --git a/src/SharpCompress/Common/GZip/GZipFilePart.Async.cs b/src/SharpCompress/Common/GZip/GZipFilePart.Async.cs new file mode 100644 index 000000000..34c3c697c --- /dev/null +++ b/src/SharpCompress/Common/GZip/GZipFilePart.Async.cs @@ -0,0 +1,133 @@ +using System; +using System.Buffers.Binary; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Tar.Headers; +using SharpCompress.Compressors.Deflate; + +namespace SharpCompress.Common.GZip; + +internal sealed partial class GZipFilePart +{ + internal static async ValueTask CreateAsync( + Stream stream, + IArchiveEncoding archiveEncoding, + CancellationToken cancellationToken = default + ) + { + var part = new GZipFilePart(stream, archiveEncoding); + + await part.ReadAndValidateGzipHeaderAsync(cancellationToken); + if (stream.CanSeek) + { + var position = stream.Position; + stream.Position = stream.Length - 8; + await part.ReadTrailerAsync(cancellationToken); + stream.Position = position; + part.EntryStartPosition = position; + } + else + { + // For non-seekable streams, we can't read the trailer or track position. + // Set to 0 since the stream will be read sequentially from its current position. + part.EntryStartPosition = 0; + } + return part; + } + + private async ValueTask ReadTrailerAsync(CancellationToken cancellationToken = default) + { + // Read and potentially verify the GZIP trailer: CRC32 and size mod 2^32 + var trailer = new byte[8]; + _ = await _stream.ReadFullyAsync(trailer, 0, 8, cancellationToken); + + Crc = BinaryPrimitives.ReadUInt32LittleEndian(trailer); + UncompressedSize = BinaryPrimitives.ReadUInt32LittleEndian(trailer.AsSpan().Slice(4)); + } + + private async ValueTask ReadAndValidateGzipHeaderAsync( + CancellationToken cancellationToken = default + ) + { + // read the header on the first read + var header = new byte[10]; + var n = await _stream.ReadAsync(header, 0, 10, cancellationToken); + + // workitem 8501: handle edge case (decompress empty stream) + if (n == 0) + { + return; + } + + if (n != 10) + { + throw new ZlibException("Not a valid GZIP stream."); + } + + if (header[0] != 0x1F || header[1] != 0x8B || header[2] != 8) + { + throw new ZlibException("Bad GZIP header."); + } + + var timet = BinaryPrimitives.ReadInt32LittleEndian(header.AsSpan().Slice(4)); + DateModified = TarHeader.EPOCH.AddSeconds(timet); + if ((header[3] & 0x04) == 0x04) + { + // read and discard extra field + var lengthField = new byte[2]; + _ = await _stream.ReadAsync(lengthField, 0, 2, cancellationToken); + + var extraLength = (short)(lengthField[0] + (lengthField[1] * 256)); + var extra = new byte[extraLength]; + + if (!await _stream.ReadFullyAsync(extra, cancellationToken)) + { + throw new ZlibException("Unexpected end-of-file reading GZIP header."); + } + } + if ((header[3] & 0x08) == 0x08) + { + _name = await ReadZeroTerminatedStringAsync(_stream, cancellationToken); + } + if ((header[3] & 0x10) == 0x010) + { + await ReadZeroTerminatedStringAsync(_stream, cancellationToken); + } + if ((header[3] & 0x02) == 0x02) + { + var buf = new byte[1]; + _ = await _stream.ReadAsync(buf, 0, 1, cancellationToken); // CRC16, ignore + } + } + + private async ValueTask ReadZeroTerminatedStringAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var buf1 = new byte[1]; + var list = new List(); + var done = false; + do + { + // workitem 7740 + var n = await stream.ReadAsync(buf1, 0, 1, cancellationToken); + if (n != 1) + { + throw new ZlibException("Unexpected EOF reading GZIP header."); + } + if (buf1[0] == 0) + { + done = true; + } + else + { + list.Add(buf1[0]); + } + } while (!done); + var buffer = list.ToArray(); + return ArchiveEncoding.Decode(buffer); + } +} diff --git a/src/SharpCompress/Common/GZip/GZipFilePart.cs b/src/SharpCompress/Common/GZip/GZipFilePart.cs index a2cb0a764..1134fa89e 100644 --- a/src/SharpCompress/Common/GZip/GZipFilePart.cs +++ b/src/SharpCompress/Common/GZip/GZipFilePart.cs @@ -2,15 +2,13 @@ using System.Buffers.Binary; using System.Collections.Generic; using System.IO; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common.Tar.Headers; using SharpCompress.Compressors; using SharpCompress.Compressors.Deflate; namespace SharpCompress.Common.GZip; -internal sealed class GZipFilePart : FilePart +internal sealed partial class GZipFilePart : FilePart { private string? _name; private readonly Stream _stream; @@ -37,32 +35,6 @@ internal static GZipFilePart Create(Stream stream, IArchiveEncoding archiveEncod return part; } - internal static async ValueTask CreateAsync( - Stream stream, - IArchiveEncoding archiveEncoding, - CancellationToken cancellationToken = default - ) - { - var part = new GZipFilePart(stream, archiveEncoding); - - await part.ReadAndValidateGzipHeaderAsync(cancellationToken); - if (stream.CanSeek) - { - var position = stream.Position; - stream.Position = stream.Length - 8; - await part.ReadTrailerAsync(cancellationToken); - stream.Position = position; - part.EntryStartPosition = position; - } - else - { - // For non-seekable streams, we can't read the trailer or track position. - // Set to 0 since the stream will be read sequentially from its current position. - part.EntryStartPosition = 0; - } - return part; - } - private GZipFilePart(Stream stream, IArchiveEncoding archiveEncoding) : base(archiveEncoding) => _stream = stream; @@ -75,7 +47,12 @@ private GZipFilePart(Stream stream, IArchiveEncoding archiveEncoding) internal override string? FilePartName => _name; internal override Stream GetCompressedStream() => - new DeflateStream(_stream, CompressionMode.Decompress, CompressionLevel.Default); + new DeflateStream( + _stream, + CompressionMode.Decompress, + CompressionLevel.Default, + leaveOpen: true + ); internal override Stream GetRawStream() => _stream; @@ -89,16 +66,6 @@ private void ReadTrailer() UncompressedSize = BinaryPrimitives.ReadUInt32LittleEndian(trailer.Slice(4)); } - private async ValueTask ReadTrailerAsync(CancellationToken cancellationToken = default) - { - // Read and potentially verify the GZIP trailer: CRC32 and size mod 2^32 - var trailer = new byte[8]; - _ = await _stream.ReadFullyAsync(trailer, 0, 8, cancellationToken); - - Crc = BinaryPrimitives.ReadUInt32LittleEndian(trailer); - UncompressedSize = BinaryPrimitives.ReadUInt32LittleEndian(trailer.AsSpan().Slice(4)); - } - private void ReadAndValidateGzipHeader() { // read the header on the first read @@ -151,61 +118,6 @@ private void ReadAndValidateGzipHeader() } } - private async ValueTask ReadAndValidateGzipHeaderAsync( - CancellationToken cancellationToken = default - ) - { - // read the header on the first read - var header = new byte[10]; - var n = await _stream.ReadAsync(header, 0, 10, cancellationToken); - - // workitem 8501: handle edge case (decompress empty stream) - if (n == 0) - { - return; - } - - if (n != 10) - { - throw new ZlibException("Not a valid GZIP stream."); - } - - if (header[0] != 0x1F || header[1] != 0x8B || header[2] != 8) - { - throw new ZlibException("Bad GZIP header."); - } - - var timet = BinaryPrimitives.ReadInt32LittleEndian(header.AsSpan().Slice(4)); - DateModified = TarHeader.EPOCH.AddSeconds(timet); - if ((header[3] & 0x04) == 0x04) - { - // read and discard extra field - var lengthField = new byte[2]; - _ = await _stream.ReadAsync(lengthField, 0, 2, cancellationToken); - - var extraLength = (short)(lengthField[0] + (lengthField[1] * 256)); - var extra = new byte[extraLength]; - - if (!await _stream.ReadFullyAsync(extra, cancellationToken)) - { - throw new ZlibException("Unexpected end-of-file reading GZIP header."); - } - } - if ((header[3] & 0x08) == 0x08) - { - _name = await ReadZeroTerminatedStringAsync(_stream, cancellationToken); - } - if ((header[3] & 0x10) == 0x010) - { - await ReadZeroTerminatedStringAsync(_stream, cancellationToken); - } - if ((header[3] & 0x02) == 0x02) - { - var buf = new byte[1]; - _ = await _stream.ReadAsync(buf, 0, 1, cancellationToken); // CRC16, ignore - } - } - private string ReadZeroTerminatedString(Stream stream) { Span buf1 = stackalloc byte[1]; @@ -231,33 +143,4 @@ private string ReadZeroTerminatedString(Stream stream) var buffer = list.ToArray(); return ArchiveEncoding.Decode(buffer); } - - private async ValueTask ReadZeroTerminatedStringAsync( - Stream stream, - CancellationToken cancellationToken = default - ) - { - var buf1 = new byte[1]; - var list = new List(); - var done = false; - do - { - // workitem 7740 - var n = await stream.ReadAsync(buf1, 0, 1, cancellationToken); - if (n != 1) - { - throw new ZlibException("Unexpected EOF reading GZIP header."); - } - if (buf1[0] == 0) - { - done = true; - } - else - { - list.Add(buf1[0]); - } - } while (!done); - var buffer = list.ToArray(); - return ArchiveEncoding.Decode(buffer); - } } diff --git a/src/SharpCompress/Common/IVolume.cs b/src/SharpCompress/Common/IVolume.cs index aed35fd03..7b0e5a2cb 100644 --- a/src/SharpCompress/Common/IVolume.cs +++ b/src/SharpCompress/Common/IVolume.cs @@ -2,7 +2,7 @@ namespace SharpCompress.Common; -public interface IVolume : IDisposable +public interface IVolume : IDisposable, IAsyncDisposable { int Index { get; } diff --git a/src/SharpCompress/Common/Rar/AsyncMarkingBinaryReader.cs b/src/SharpCompress/Common/Rar/AsyncMarkingBinaryReader.cs new file mode 100644 index 000000000..fc5bd9cfc --- /dev/null +++ b/src/SharpCompress/Common/Rar/AsyncMarkingBinaryReader.cs @@ -0,0 +1,195 @@ +using System; +using System.Buffers.Binary; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; + +namespace SharpCompress.Common.Rar; + +internal class AsyncMarkingBinaryReader +{ + private readonly AsyncBinaryReader _reader; + + public AsyncMarkingBinaryReader(Stream stream) + { + _reader = new AsyncBinaryReader(stream, leaveOpen: true); + } + + public Stream BaseStream => _reader.BaseStream; + + public virtual long CurrentReadByteCount { get; protected set; } + + public virtual void Mark() => CurrentReadByteCount = 0; + + public virtual async ValueTask ReadBooleanAsync( + CancellationToken cancellationToken = default + ) => await ReadByteAsync(cancellationToken).ConfigureAwait(false) != 0; + + public virtual async ValueTask ReadByteAsync( + CancellationToken cancellationToken = default + ) + { + CurrentReadByteCount++; + return await _reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + } + + public virtual async ValueTask ReadBytesAsync( + int count, + CancellationToken cancellationToken = default + ) + { + CurrentReadByteCount += count; + var bytes = new byte[count]; + await _reader.ReadBytesAsync(bytes, 0, count, cancellationToken).ConfigureAwait(false); + return bytes; + } + + public async ValueTask ReadUInt16Async(CancellationToken cancellationToken = default) + { + CurrentReadByteCount += 2; + var bytes = await ReadBytesAsync(2, cancellationToken).ConfigureAwait(false); + return BinaryPrimitives.ReadUInt16LittleEndian(bytes); + } + + public async ValueTask ReadUInt32Async(CancellationToken cancellationToken = default) + { + CurrentReadByteCount += 4; + var bytes = await ReadBytesAsync(4, cancellationToken).ConfigureAwait(false); + return BinaryPrimitives.ReadUInt32LittleEndian(bytes); + } + + public virtual async ValueTask ReadUInt64Async( + CancellationToken cancellationToken = default + ) + { + CurrentReadByteCount += 8; + var bytes = await ReadBytesAsync(8, cancellationToken).ConfigureAwait(false); + return BinaryPrimitives.ReadUInt64LittleEndian(bytes); + } + + public virtual async ValueTask ReadInt16Async( + CancellationToken cancellationToken = default + ) + { + CurrentReadByteCount += 2; + var bytes = await ReadBytesAsync(2, cancellationToken).ConfigureAwait(false); + return BinaryPrimitives.ReadInt16LittleEndian(bytes); + } + + public virtual async ValueTask ReadInt32Async( + CancellationToken cancellationToken = default + ) + { + CurrentReadByteCount += 4; + var bytes = await ReadBytesAsync(4, cancellationToken).ConfigureAwait(false); + return BinaryPrimitives.ReadInt32LittleEndian(bytes); + } + + public virtual async ValueTask ReadInt64Async( + CancellationToken cancellationToken = default + ) + { + CurrentReadByteCount += 8; + var bytes = await ReadBytesAsync(8, cancellationToken).ConfigureAwait(false); + return BinaryPrimitives.ReadInt64LittleEndian(bytes); + } + + public async ValueTask ReadRarVIntAsync( + CancellationToken cancellationToken = default, + int maxBytes = 10 + ) => await DoReadRarVIntAsync((maxBytes - 1) * 7, cancellationToken).ConfigureAwait(false); + + private async ValueTask DoReadRarVIntAsync( + int maxShift, + CancellationToken cancellationToken + ) + { + var shift = 0; + ulong result = 0; + do + { + var b0 = await ReadByteAsync(cancellationToken).ConfigureAwait(false); + var b1 = ((uint)b0) & 0x7f; + ulong n = b1; + var shifted = n << shift; + if (n != shifted >> shift) + { + // overflow + break; + } + result |= shifted; + if (b0 == b1) + { + return result; + } + shift += 7; + } while (shift <= maxShift); + + throw new FormatException("malformed vint"); + } + + public async ValueTask ReadRarVIntUInt32Async( + int maxBytes = 5, + CancellationToken cancellationToken = default + ) => + // hopefully this gets inlined + await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken).ConfigureAwait(false); + + public async ValueTask ReadRarVIntUInt16Async( + int maxBytes = 3, + CancellationToken cancellationToken = default + ) => + // hopefully this gets inlined + checked( + (ushort) + await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken) + .ConfigureAwait(false) + ); + + public async ValueTask ReadRarVIntByteAsync( + int maxBytes = 2, + CancellationToken cancellationToken = default + ) => + // hopefully this gets inlined + checked( + (byte) + await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken) + .ConfigureAwait(false) + ); + + public async ValueTask SkipAsync(int count, CancellationToken cancellationToken = default) + { + CurrentReadByteCount += count; + await _reader.SkipAsync(count, cancellationToken).ConfigureAwait(false); + } + + private async ValueTask DoReadRarVIntUInt32Async( + int maxShift, + CancellationToken cancellationToken = default + ) + { + var shift = 0; + uint result = 0; + do + { + var b0 = await ReadByteAsync(cancellationToken).ConfigureAwait(false); + var b1 = ((uint)b0) & 0x7f; + var n = b1; + var shifted = n << shift; + if (n != shifted >> shift) + { + // overflow + break; + } + result |= shifted; + if (b0 == b1) + { + return result; + } + shift += 7; + } while (shift <= maxShift); + + throw new FormatException("malformed vint"); + } +} diff --git a/src/SharpCompress/Common/Rar/AsyncRarCrcBinaryReader.cs b/src/SharpCompress/Common/Rar/AsyncRarCrcBinaryReader.cs new file mode 100644 index 000000000..c4c440a1a --- /dev/null +++ b/src/SharpCompress/Common/Rar/AsyncRarCrcBinaryReader.cs @@ -0,0 +1,45 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.Rar; + +namespace SharpCompress.Common.Rar; + +internal class AsyncRarCrcBinaryReader(Stream stream) : AsyncMarkingBinaryReader(stream) +{ + private uint _currentCrc; + + public uint GetCrc32() => ~_currentCrc; + + public void ResetCrc() => _currentCrc = 0xffffffff; + + protected void UpdateCrc(byte b) => _currentCrc = RarCRC.CheckCrc(_currentCrc, b); + + protected async ValueTask ReadBytesNoCrcAsync( + int count, + CancellationToken cancellationToken = default + ) + { + return await base.ReadBytesAsync(count, cancellationToken).ConfigureAwait(false); + } + + public override async ValueTask ReadByteAsync( + CancellationToken cancellationToken = default + ) + { + var b = await base.ReadByteAsync(cancellationToken).ConfigureAwait(false); + _currentCrc = RarCRC.CheckCrc(_currentCrc, b); + return b; + } + + public override async ValueTask ReadBytesAsync( + int count, + CancellationToken cancellationToken = default + ) + { + var result = await base.ReadBytesAsync(count, cancellationToken).ConfigureAwait(false); + _currentCrc = RarCRC.CheckCrc(_currentCrc, result, 0, result.Length); + return result; + } +} diff --git a/src/SharpCompress/Common/Rar/AsyncRarCryptoBinaryReader.cs b/src/SharpCompress/Common/Rar/AsyncRarCryptoBinaryReader.cs new file mode 100644 index 000000000..d71f35a53 --- /dev/null +++ b/src/SharpCompress/Common/Rar/AsyncRarCryptoBinaryReader.cs @@ -0,0 +1,109 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar.Headers; +using SharpCompress.Crypto; + +namespace SharpCompress.Common.Rar; + +internal sealed class AsyncRarCryptoBinaryReader : AsyncRarCrcBinaryReader +{ + private BlockTransformer _rijndael = default!; + private readonly Queue _data = new(); + private long _readCount; + + private AsyncRarCryptoBinaryReader(Stream stream) + : base(stream) { } + + public static async ValueTask Create( + Stream stream, + ICryptKey cryptKey, + byte[]? salt = null + ) + { + var binary = new AsyncRarCryptoBinaryReader(stream); + if (salt == null) + { + salt = await binary.ReadBytesAsyncBase(EncryptionConstV5.SIZE_SALT30); + binary._readCount += EncryptionConstV5.SIZE_SALT30; + } + binary._rijndael = new BlockTransformer(cryptKey.Transformer(salt)); + return binary; + } + + public override long CurrentReadByteCount + { + get => _readCount; + protected set + { + // ignore + } + } + + public override void Mark() => _readCount = 0; + + public override async ValueTask ReadByteAsync( + CancellationToken cancellationToken = default + ) + { + var bytes = await ReadAndDecryptBytesAsync(1, cancellationToken).ConfigureAwait(false); + return bytes[0]; + } + + private ValueTask ReadBytesAsyncBase(int count) => base.ReadBytesAsync(count); + + public override async ValueTask ReadBytesAsync( + int count, + CancellationToken cancellationToken = default + ) + { + return await ReadAndDecryptBytesAsync(count, cancellationToken).ConfigureAwait(false); + } + + private async ValueTask ReadAndDecryptBytesAsync( + int count, + CancellationToken cancellationToken + ) + { + var queueSize = _data.Count; + var sizeToRead = count - queueSize; + + if (sizeToRead > 0) + { + var alignedSize = sizeToRead + ((~sizeToRead + 1) & 0xf); + for (var i = 0; i < alignedSize / 16; i++) + { + var cipherText = await ReadBytesNoCrcAsync(16, cancellationToken) + .ConfigureAwait(false); + var readBytes = _rijndael.ProcessBlock(cipherText); + foreach (var readByte in readBytes) + { + _data.Enqueue(readByte); + } + } + } + + var decryptedBytes = new byte[count]; + + for (var i = 0; i < count; i++) + { + var b = _data.Dequeue(); + decryptedBytes[i] = b; + UpdateCrc(b); + } + + _readCount += count; + return decryptedBytes; + } + + public void ClearQueue() => _data.Clear(); + + public void SkipQueue() + { + var position = BaseStream.Position; + BaseStream.Position = position + _data.Count; + ClearQueue(); + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/AVHeader.cs b/src/SharpCompress/Common/Rar/Headers/AVHeader.cs index cd51d80bf..fafab9df4 100644 --- a/src/SharpCompress/Common/Rar/Headers/AVHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/AVHeader.cs @@ -4,13 +4,14 @@ namespace SharpCompress.Common.Rar.Headers; internal class AvHeader : RarHeader { - public AvHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.Av) + public static AvHeader Create(RarHeader header, RarCrcBinaryReader reader) { - if (IsRar5) + var c = CreateChild(header, reader, HeaderType.Av); + if (c.IsRar5) { throw new InvalidFormatException("unexpected rar5 record"); } + return c; } protected override void ReadFinish(MarkingBinaryReader reader) diff --git a/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.Async.cs new file mode 100644 index 000000000..ef3d4b02b --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.Async.cs @@ -0,0 +1,32 @@ +#nullable disable + +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Common.Rar.Headers; + +internal sealed partial class ArchiveCryptHeader +{ + public static async ValueTask CreateAsync( + RarHeader header, + AsyncRarCrcBinaryReader reader, + CancellationToken cancellationToken = default + ) => + await CreateChildAsync( + header, + reader, + HeaderType.Crypt, + cancellationToken + ) + .ConfigureAwait(false); + + protected sealed override async ValueTask ReadFinishAsync( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken = default + ) + { + CryptInfo = await Rar5CryptoInfo.CreateAsync(reader, false); + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.cs b/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.cs index f819b4785..1f5ab837b 100644 --- a/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/ArchiveCryptHeader.cs @@ -1,16 +1,17 @@ #nullable disable +using SharpCompress.Common.Rar; using SharpCompress.IO; namespace SharpCompress.Common.Rar.Headers; -internal class ArchiveCryptHeader : RarHeader +internal sealed partial class ArchiveCryptHeader : RarHeader { - public ArchiveCryptHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.Crypt) { } + public static ArchiveCryptHeader Create(RarHeader header, RarCrcBinaryReader reader) => + CreateChild(header, reader, HeaderType.Crypt); - public Rar5CryptoInfo CryptInfo = new(); + public Rar5CryptoInfo CryptInfo = default!; - protected override void ReadFinish(MarkingBinaryReader reader) => - CryptInfo = new Rar5CryptoInfo(reader, false); + protected sealed override void ReadFinish(MarkingBinaryReader reader) => + CryptInfo = Rar5CryptoInfo.Create(reader, false); } diff --git a/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.Async.cs new file mode 100644 index 000000000..9be7d4e9b --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.Async.cs @@ -0,0 +1,53 @@ +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Common.Rar.Headers; + +internal sealed partial class ArchiveHeader +{ + public static async ValueTask CreateAsync( + RarHeader header, + AsyncRarCrcBinaryReader reader, + CancellationToken cancellationToken = default + ) => + await CreateChildAsync(header, reader, HeaderType.Archive, cancellationToken) + .ConfigureAwait(false); + + protected sealed override async ValueTask ReadFinishAsync( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken = default + ) + { + if (IsRar5) + { + Flags = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + if (HasFlag(ArchiveFlagsV5.HAS_VOLUME_NUMBER)) + { + VolumeNumber = (int) + await reader + .ReadRarVIntUInt32Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + } + // later: we may have a locator record if we need it + //if (ExtraSize != 0) { + // ReadLocator(reader); + //} + } + else + { + Flags = HeaderFlags; + HighPosAv = await reader.ReadInt16Async(cancellationToken).ConfigureAwait(false); + PosAv = await reader.ReadInt32Async(cancellationToken).ConfigureAwait(false); + if (HasFlag(ArchiveFlagsV4.ENCRYPT_VER)) + { + EncryptionVersion = await reader + .ReadByteAsync(cancellationToken) + .ConfigureAwait(false); + } + } + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.cs b/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.cs index e8f344adb..d3b5ff25a 100644 --- a/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/ArchiveHeader.cs @@ -1,13 +1,14 @@ +using SharpCompress.Common.Rar; using SharpCompress.IO; namespace SharpCompress.Common.Rar.Headers; -internal sealed class ArchiveHeader : RarHeader +internal sealed partial class ArchiveHeader : RarHeader { - public ArchiveHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.Archive) { } + public static ArchiveHeader Create(RarHeader header, RarCrcBinaryReader reader) => + CreateChild(header, reader, HeaderType.Archive); - protected override void ReadFinish(MarkingBinaryReader reader) + protected sealed override void ReadFinish(MarkingBinaryReader reader) { if (IsRar5) { diff --git a/src/SharpCompress/Common/Rar/Headers/CommentHeader.cs b/src/SharpCompress/Common/Rar/Headers/CommentHeader.cs index 54abf9cc2..14f0a799d 100644 --- a/src/SharpCompress/Common/Rar/Headers/CommentHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/CommentHeader.cs @@ -4,13 +4,14 @@ namespace SharpCompress.Common.Rar.Headers; internal class CommentHeader : RarHeader { - protected CommentHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.Comment) + public static CommentHeader Create(RarHeader header, RarCrcBinaryReader reader) { - if (IsRar5) + var c = CreateChild(header, reader, HeaderType.Comment); + if (c.IsRar5) { throw new InvalidFormatException("unexpected rar5 record"); } + return c; } protected override void ReadFinish(MarkingBinaryReader reader) diff --git a/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.Async.cs new file mode 100644 index 000000000..8311c7965 --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.Async.cs @@ -0,0 +1,47 @@ +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Common.Rar.Headers; + +internal sealed partial class EndArchiveHeader +{ + public static async ValueTask CreateAsync( + RarHeader header, + AsyncRarCrcBinaryReader reader, + CancellationToken cancellationToken = default + ) => + await CreateChildAsync( + header, + reader, + HeaderType.EndArchive, + cancellationToken + ) + .ConfigureAwait(false); + + protected sealed override async ValueTask ReadFinishAsync( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken = default + ) + { + if (IsRar5) + { + Flags = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + } + else + { + Flags = HeaderFlags; + if (HasFlag(EndArchiveFlagsV4.DATA_CRC)) + { + ArchiveCrc = await reader.ReadInt32Async(cancellationToken).ConfigureAwait(false); + } + if (HasFlag(EndArchiveFlagsV4.VOLUME_NUMBER)) + { + VolumeNumber = await reader.ReadInt16Async(cancellationToken).ConfigureAwait(false); + } + } + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.cs b/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.cs index f5bc45234..def879629 100644 --- a/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/EndArchiveHeader.cs @@ -1,13 +1,14 @@ -using SharpCompress.IO; +using SharpCompress.Common.Rar; +using SharpCompress.IO; namespace SharpCompress.Common.Rar.Headers; -internal class EndArchiveHeader : RarHeader +internal sealed partial class EndArchiveHeader : RarHeader { - public EndArchiveHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.EndArchive) { } + public static EndArchiveHeader Create(RarHeader header, RarCrcBinaryReader reader) => + CreateChild(header, reader, HeaderType.EndArchive); - protected override void ReadFinish(MarkingBinaryReader reader) + protected sealed override void ReadFinish(MarkingBinaryReader reader) { if (IsRar5) { diff --git a/src/SharpCompress/Common/Rar/Headers/FileHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/FileHeader.Async.cs new file mode 100644 index 000000000..845da53f6 --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/FileHeader.Async.cs @@ -0,0 +1,441 @@ +using System; +using System.IO; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; +#if !Rar2017_64bit +using size_t = System.UInt32; +#else +using nint = System.Int64; +using nuint = System.UInt64; +using size_t = System.UInt64; +#endif + +namespace SharpCompress.Common.Rar.Headers; + +internal partial class FileHeader +{ + public static async ValueTask CreateAsync( + RarHeader header, + AsyncRarCrcBinaryReader reader, + HeaderType headerType, + CancellationToken cancellationToken = default + ) => + await CreateChildAsync(header, reader, headerType, cancellationToken) + .ConfigureAwait(false); + + protected override async ValueTask ReadFinishAsync( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken + ) + { + if (IsRar5) + { + await ReadFromReaderV5Async(reader, cancellationToken).ConfigureAwait(false); + } + else + { + await ReadFromReaderV4Async(reader, cancellationToken).ConfigureAwait(false); + } + } + + private async ValueTask ReadFromReaderV5Async( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken + ) + { + Flags = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + + var lvalue = checked( + (long) + await reader + .ReadRarVIntAsync(cancellationToken: cancellationToken) + .ConfigureAwait(false) + ); + + UncompressedSize = HasFlag(FileFlagsV5.UNPACKED_SIZE_UNKNOWN) ? long.MaxValue : lvalue; + + FileAttributes = await reader + .ReadRarVIntUInt32Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + + if (HasFlag(FileFlagsV5.HAS_MOD_TIME)) + { + FileLastModifiedTime = Utility.UnixTimeToDateTime( + await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false) + ); + } + + if (HasFlag(FileFlagsV5.HAS_CRC32)) + { + FileCrc = await reader.ReadBytesAsync(4, cancellationToken).ConfigureAwait(false); + } + + var compressionInfo = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + + CompressionAlgorithm = (byte)((compressionInfo & 0x3f) + 50); + IsSolid = (compressionInfo & 0x40) == 0x40; + CompressionMethod = (byte)((compressionInfo >> 7) & 0x7); + WindowSize = IsDirectory ? 0 : ((size_t)0x20000) << ((compressionInfo >> 10) & 0xf); + + HostOs = await reader + .ReadRarVIntByteAsync(cancellationToken: cancellationToken) + .ConfigureAwait(false); + + var nameSize = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + + var b = await reader.ReadBytesAsync(nameSize, cancellationToken).ConfigureAwait(false); + FileName = ConvertPathV5(Encoding.UTF8.GetString(b, 0, b.Length)); + + if (ExtraSize != (uint)RemainingHeaderBytesAsync(reader)) + { + throw new InvalidFormatException("rar5 header size / extra size inconsistency"); + } + + const ushort FHEXTRA_CRYPT = 0x01; + const ushort FHEXTRA_HASH = 0x02; + const ushort FHEXTRA_HTIME = 0x03; + const ushort FHEXTRA_REDIR = 0x05; + + while (reader.CurrentReadByteCount < HeaderSize) + { + var size = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + var n = HeaderSize - reader.CurrentReadByteCount; + var type = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + switch (type) + { + case FHEXTRA_CRYPT: + { + Rar5CryptoInfo = await Rar5CryptoInfo.CreateAsync(reader, true); + if (Rar5CryptoInfo.PswCheck.All(singleByte => singleByte == 0)) + { + Rar5CryptoInfo = null; + } + } + break; + case FHEXTRA_HASH: + { + const uint FHEXTRA_HASH_BLAKE2 = 0x0; + const int BLAKE2_DIGEST_SIZE = 0x20; + if ( + await reader + .ReadRarVIntUInt32Async(cancellationToken: cancellationToken) + .ConfigureAwait(false) == FHEXTRA_HASH_BLAKE2 + ) + { + _hash = await reader + .ReadBytesAsync(BLAKE2_DIGEST_SIZE, cancellationToken) + .ConfigureAwait(false); + } + } + break; + case FHEXTRA_HTIME: + { + var flags = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + var isWindowsTime = (flags & 1) == 0; + if ((flags & 0x2) == 0x2) + { + FileLastModifiedTime = await ReadExtendedTimeV5Async( + reader, + isWindowsTime, + cancellationToken + ) + .ConfigureAwait(false); + } + if ((flags & 0x4) == 0x4) + { + FileCreatedTime = await ReadExtendedTimeV5Async( + reader, + isWindowsTime, + cancellationToken + ) + .ConfigureAwait(false); + } + if ((flags & 0x8) == 0x8) + { + FileLastAccessedTime = await ReadExtendedTimeV5Async( + reader, + isWindowsTime, + cancellationToken + ) + .ConfigureAwait(false); + } + } + break; + case FHEXTRA_REDIR: + { + RedirType = await reader + .ReadRarVIntByteAsync(cancellationToken: cancellationToken) + .ConfigureAwait(false); + RedirFlags = await reader + .ReadRarVIntByteAsync(cancellationToken: cancellationToken) + .ConfigureAwait(false); + var nn = await reader + .ReadRarVIntUInt16Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + var bb = await reader + .ReadBytesAsync(nn, cancellationToken) + .ConfigureAwait(false); + RedirTargetName = ConvertPathV5(Encoding.UTF8.GetString(bb, 0, bb.Length)); + } + break; + default: + break; + } + var did = (int)(n - (HeaderSize - reader.CurrentReadByteCount)); + var drain = size - did; + if (drain > 0) + { + await reader.ReadBytesAsync(drain, cancellationToken).ConfigureAwait(false); + } + } + + if (AdditionalDataSize != 0) + { + CompressedSize = AdditionalDataSize; + } + } + + private async ValueTask ReadFromReaderV4Async( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken + ) + { + Flags = HeaderFlags; + IsSolid = HasFlag(FileFlagsV4.SOLID); + WindowSize = IsDirectory + ? 0U + : ((size_t)0x10000) << ((Flags & FileFlagsV4.WINDOW_MASK) >> 5); + + var lowUncompressedSize = await reader + .ReadUInt32Async(cancellationToken) + .ConfigureAwait(false); + + HostOs = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + + FileCrc = await reader.ReadBytesAsync(4, cancellationToken).ConfigureAwait(false); + + FileLastModifiedTime = Utility.DosDateToDateTime( + await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false) + ); + + CompressionAlgorithm = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + CompressionMethod = (byte)( + (await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false)) - 0x30 + ); + + var nameSize = await reader.ReadInt16Async(cancellationToken).ConfigureAwait(false); + + FileAttributes = await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false); + + uint highCompressedSize = 0; + uint highUncompressedkSize = 0; + if (HasFlag(FileFlagsV4.LARGE)) + { + highCompressedSize = await reader + .ReadUInt32Async(cancellationToken) + .ConfigureAwait(false); + highUncompressedkSize = await reader + .ReadUInt32Async(cancellationToken) + .ConfigureAwait(false); + } + else + { + if (lowUncompressedSize == 0xffffffff) + { + lowUncompressedSize = 0xffffffff; + highUncompressedkSize = int.MaxValue; + } + } + CompressedSize = UInt32To64(highCompressedSize, checked((uint)AdditionalDataSize)); + UncompressedSize = UInt32To64(highUncompressedkSize, lowUncompressedSize); + + nameSize = nameSize > 4 * 1024 ? (short)(4 * 1024) : nameSize; + + var fileNameBytes = await reader + .ReadBytesAsync(nameSize, cancellationToken) + .ConfigureAwait(false); + + const int newLhdSize = 32; + + switch (HeaderCode) + { + case HeaderCodeV.RAR4_FILE_HEADER: + { + if (HasFlag(FileFlagsV4.UNICODE)) + { + var length = 0; + while (length < fileNameBytes.Length && fileNameBytes[length] != 0) + { + length++; + } + if (length != nameSize) + { + length++; + FileName = FileNameDecoder.Decode(fileNameBytes, length); + } + else + { + FileName = ArchiveEncoding.Decode(fileNameBytes); + } + } + else + { + FileName = ArchiveEncoding.Decode(fileNameBytes); + } + FileName = ConvertPathV4(FileName); + } + break; + case HeaderCodeV.RAR4_NEW_SUB_HEADER: + { + var datasize = HeaderSize - newLhdSize - nameSize; + if (HasFlag(FileFlagsV4.SALT)) + { + datasize -= EncryptionConstV5.SIZE_SALT30; + } + if (datasize > 0) + { + SubData = await reader + .ReadBytesAsync(datasize, cancellationToken) + .ConfigureAwait(false); + } + + if (NewSubHeaderType.SUBHEAD_TYPE_RR.Equals(fileNameBytes.Take(4).ToArray())) + { + if (SubData is null) + { + throw new InvalidFormatException(); + } + RecoverySectors = + SubData[8] + + (SubData[9] << 8) + + (SubData[10] << 16) + + (SubData[11] << 24); + } + } + break; + } + + if (HasFlag(FileFlagsV4.SALT)) + { + R4Salt = await reader.ReadBytesAsync(EncryptionConstV5.SIZE_SALT30, cancellationToken); + } + if (HasFlag(FileFlagsV4.EXT_TIME)) + { + if (reader.CurrentReadByteCount >= 2) + { + var extendedFlags = await reader + .ReadUInt16Async(cancellationToken) + .ConfigureAwait(false); + if (FileLastModifiedTime is not null) + { + FileLastModifiedTime = await ProcessExtendedTimeV4Async( + extendedFlags, + FileLastModifiedTime, + reader, + 0, + cancellationToken + ) + .ConfigureAwait(false); + } + + FileCreatedTime = await ProcessExtendedTimeV4Async( + extendedFlags, + null, + reader, + 1, + cancellationToken + ) + .ConfigureAwait(false); + FileLastAccessedTime = await ProcessExtendedTimeV4Async( + extendedFlags, + null, + reader, + 2, + cancellationToken + ) + .ConfigureAwait(false); + FileArchivedTime = await ProcessExtendedTimeV4Async( + extendedFlags, + null, + reader, + 3, + cancellationToken + ) + .ConfigureAwait(false); + } + } + } + + private static async ValueTask ReadExtendedTimeV5Async( + AsyncMarkingBinaryReader reader, + bool isWindowsTime, + CancellationToken cancellationToken + ) + { + if (isWindowsTime) + { + return DateTime.FromFileTime( + await reader.ReadInt64Async(cancellationToken).ConfigureAwait(false) + ); + } + else + { + return Utility.UnixTimeToDateTime( + await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false) + ); + } + } + + private static async ValueTask ProcessExtendedTimeV4Async( + ushort extendedFlags, + DateTime? time, + AsyncMarkingBinaryReader reader, + int i, + CancellationToken cancellationToken + ) + { + var rmode = (uint)extendedFlags >> ((3 - i) * 4); + if ((rmode & 8) == 0) + { + return null; + } + if (i != 0) + { + var dosTime = await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false); + time = Utility.DosDateToDateTime(dosTime); + } + if ((rmode & 4) == 0 && time is not null) + { + time = time.Value.AddSeconds(1); + } + uint nanosecondHundreds = 0; + var count = (int)rmode & 3; + for (var j = 0; j < count; j++) + { + var b = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + nanosecondHundreds |= (((uint)b) << ((j + 3 - count) * 8)); + } + + if (time is not null) + { + return time.Value.AddMilliseconds(nanosecondHundreds * Math.Pow(10, -4)); + } + return null; + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/FileHeader.cs b/src/SharpCompress/Common/Rar/Headers/FileHeader.cs index 0aa9fc0d7..f0b7a53c6 100644 --- a/src/SharpCompress/Common/Rar/Headers/FileHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/FileHeader.cs @@ -2,6 +2,9 @@ using System.IO; using System.Linq; using System.Text; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; using SharpCompress.IO; #if !Rar2017_64bit using size_t = System.UInt32; @@ -13,12 +16,15 @@ namespace SharpCompress.Common.Rar.Headers; -internal class FileHeader : RarHeader +internal partial class FileHeader : RarHeader { private byte[]? _hash; - public FileHeader(RarHeader header, RarCrcBinaryReader reader, HeaderType headerType) - : base(header, reader, headerType) { } + public static FileHeader Create( + RarHeader header, + RarCrcBinaryReader reader, + HeaderType headerType + ) => CreateChild(header, reader, headerType); protected override void ReadFinish(MarkingBinaryReader reader) { @@ -76,23 +82,6 @@ private void ReadFromReaderV5(MarkingBinaryReader reader) var nameSize = reader.ReadRarVIntUInt16(); - // Variable length field containing Name length bytes in UTF-8 format without trailing zero. - // For file header this is a name of archived file. Forward slash character is used as the path separator both for Unix and Windows names. - // Backslashes are treated as a part of name for Unix names and as invalid character for Windows file names. Type of name is defined by Host OS field. - // - // TODO: not sure if anything needs to be done to handle the following: - // If Unix file name contains any high ASCII characters which cannot be correctly converted to Unicode and UTF-8 - // we map such characters to to 0xE080 - 0xE0FF private use Unicode area and insert 0xFFFE Unicode non-character - // to resulting string to indicate that it contains mapped characters, which need to be converted back when extracting. - // Concrete position of 0xFFFE is not defined, we need to search the entire string for it. Such mapped names are not - // portable and can be correctly unpacked only on the same system where they were created. - // - // For service header this field contains a name of service header. Now the following names are used: - // CMT Archive comment - // QO Archive quick open data - // ACL NTFS file permissions - // STM NTFS alternate data stream - // RR Recovery record var b = reader.ReadBytes(nameSize); FileName = ConvertPathV5(Encoding.UTF8.GetString(b, 0, b.Length)); @@ -119,7 +108,7 @@ private void ReadFromReaderV5(MarkingBinaryReader reader) { case FHEXTRA_CRYPT: // file encryption { - Rar5CryptoInfo = new Rar5CryptoInfo(reader, true); + Rar5CryptoInfo = Rar5CryptoInfo.Create(reader, true); if (Rar5CryptoInfo.PswCheck.All(singleByte => singleByte == 0)) { @@ -130,14 +119,11 @@ private void ReadFromReaderV5(MarkingBinaryReader reader) case FHEXTRA_HASH: { const uint FHEXTRA_HASH_BLAKE2 = 0x0; - // const uint HASH_BLAKE2 = 0x03; const int BLAKE2_DIGEST_SIZE = 0x20; if ((uint)reader.ReadRarVInt() == FHEXTRA_HASH_BLAKE2) { - // var hash = HASH_BLAKE2; _hash = reader.ReadBytes(BLAKE2_DIGEST_SIZE); } - // enum HASH_TYPE {HASH_NONE,HASH_RAR14,HASH_CRC32,HASH_BLAKE2}; } break; case FHEXTRA_HTIME: // file time @@ -158,12 +144,6 @@ private void ReadFromReaderV5(MarkingBinaryReader reader) } } break; - //TODO - // case FHEXTRA_VERSION: // file version - // { - // - // } - // break; case FHEXTRA_REDIR: // file system redirection { RedirType = reader.ReadRarVIntByte(); @@ -173,21 +153,7 @@ private void ReadFromReaderV5(MarkingBinaryReader reader) RedirTargetName = ConvertPathV5(Encoding.UTF8.GetString(bb, 0, bb.Length)); } break; - //TODO - // case FHEXTRA_UOWNER: // unix owner - // { - // - // } - // break; - // case FHEXTRA_SUBDATA: // service data - // { - // - // } - // break; - default: - // skip unknown record types to allow new record types to be added in the future - //Console.WriteLine($"unhandled rar header field type {type}"); break; } // drain any trailing bytes of extra record @@ -336,8 +302,6 @@ private void ReadFromReaderV4(MarkingBinaryReader reader) } if (HasFlag(FileFlagsV4.EXT_TIME)) { - // verify that the end of the header hasn't been reached before reading the Extended Time. - // some tools incorrectly omit Extended Time despite specifying FileFlags.EXTTIME, which most parsers tolerate. if (RemainingHeaderBytes(reader) >= 2) { var extendedFlags = reader.ReadUInt16(); diff --git a/src/SharpCompress/Common/Rar/Headers/MarkHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/MarkHeader.Async.cs new file mode 100644 index 000000000..19112f786 --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/MarkHeader.Async.cs @@ -0,0 +1,132 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Rar.Headers; + +internal partial class MarkHeader +{ + private static async ValueTask GetByteAsync( + Stream stream, + CancellationToken cancellationToken + ) + { + var buffer = new byte[1]; + var bytesRead = await stream + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (bytesRead == 1) + { + return buffer[0]; + } + throw new EndOfStreamException(); + } + + public static async ValueTask ReadAsync( + Stream stream, + bool leaveStreamOpen, + bool lookForHeader, + CancellationToken cancellationToken = default + ) + { + var maxScanIndex = lookForHeader ? MAX_SFX_SIZE : 0; + try + { + var start = -1; + var b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + while (start <= maxScanIndex) + { + if (b == 0x52) + { + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b == 0x61) + { + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0x72) + { + continue; + } + + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0x21) + { + continue; + } + + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0x1a) + { + continue; + } + + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0x07) + { + continue; + } + + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b == 1) + { + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0) + { + continue; + } + + return new MarkHeader(true); // Rar5 + } + else if (b == 0) + { + return new MarkHeader(false); // Rar4 + } + } + else if (b == 0x45) + { + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0x7e) + { + continue; + } + + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + if (b != 0x5e) + { + continue; + } + + throw new InvalidFormatException( + "Rar format version pre-4 is unsupported." + ); + } + } + else + { + b = await GetByteAsync(stream, cancellationToken).ConfigureAwait(false); + start++; + } + } + } + catch (Exception e) + { + if (!leaveStreamOpen) + { + stream.Dispose(); + } + throw new InvalidFormatException("Error trying to read rar signature.", e); + } + + throw new InvalidFormatException("Rar signature not found"); + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/MarkHeader.cs b/src/SharpCompress/Common/Rar/Headers/MarkHeader.cs index 9ca0f9b21..33cf5ae28 100644 --- a/src/SharpCompress/Common/Rar/Headers/MarkHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/MarkHeader.cs @@ -1,9 +1,11 @@ using System; using System.IO; +using System.Threading; +using System.Threading.Tasks; namespace SharpCompress.Common.Rar.Headers; -internal class MarkHeader : IRarHeader +internal partial class MarkHeader : IRarHeader { private const int MAX_SFX_SIZE = 0x80000 - 16; //archive.cpp line 136 diff --git a/src/SharpCompress/Common/Rar/Headers/ProtectHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/ProtectHeader.Async.cs new file mode 100644 index 000000000..0fe33a386 --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/ProtectHeader.Async.cs @@ -0,0 +1,40 @@ +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Common.Rar.Headers; + +internal sealed partial class ProtectHeader +{ + public static async ValueTask CreateAsync( + RarHeader header, + AsyncRarCrcBinaryReader reader, + CancellationToken cancellationToken = default + ) + { + var c = await CreateChildAsync( + header, + reader, + HeaderType.Protect, + cancellationToken + ) + .ConfigureAwait(false); + if (c.IsRar5) + { + throw new InvalidFormatException("unexpected rar5 record"); + } + return c; + } + + protected sealed override async ValueTask ReadFinishAsync( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken = default + ) + { + Version = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + RecSectors = await reader.ReadUInt16Async(cancellationToken).ConfigureAwait(false); + TotalBlocks = await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false); + Mark = await reader.ReadBytesAsync(8, cancellationToken).ConfigureAwait(false); + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/ProtectHeader.cs b/src/SharpCompress/Common/Rar/Headers/ProtectHeader.cs index cf8db3c06..71b9c420c 100644 --- a/src/SharpCompress/Common/Rar/Headers/ProtectHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/ProtectHeader.cs @@ -1,20 +1,21 @@ +using SharpCompress.Common.Rar; using SharpCompress.IO; namespace SharpCompress.Common.Rar.Headers; -// ProtectHeader is part of the Recovery Record feature -internal sealed class ProtectHeader : RarHeader +internal sealed partial class ProtectHeader : RarHeader { - public ProtectHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.Protect) + public static ProtectHeader Create(RarHeader header, RarCrcBinaryReader reader) { - if (IsRar5) + var c = CreateChild(header, reader, HeaderType.Protect); + if (c.IsRar5) { throw new InvalidFormatException("unexpected rar5 record"); } + return c; } - protected override void ReadFinish(MarkingBinaryReader reader) + protected sealed override void ReadFinish(MarkingBinaryReader reader) { Version = reader.ReadByte(); RecSectors = reader.ReadUInt16(); diff --git a/src/SharpCompress/Common/Rar/Headers/RarHeader.Async.cs b/src/SharpCompress/Common/Rar/Headers/RarHeader.Async.cs new file mode 100644 index 000000000..e4692a979 --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/RarHeader.Async.cs @@ -0,0 +1,115 @@ +using System; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Common.Rar.Headers; + +internal partial class RarHeader +{ + internal static async ValueTask TryReadBaseAsync( + AsyncRarCrcBinaryReader reader, + bool isRar5, + IArchiveEncoding archiveEncoding, + CancellationToken cancellationToken = default + ) + { + try + { + var header = new RarHeader(); + await header + .InitializeAsync(reader, isRar5, archiveEncoding, cancellationToken) + .ConfigureAwait(false); + return header; + } + catch (InvalidFormatException) + { + return null; + } + } + + private async ValueTask InitializeAsync( + AsyncRarCrcBinaryReader reader, + bool isRar5, + IArchiveEncoding archiveEncoding, + CancellationToken cancellationToken + ) + { + _headerType = HeaderType.Null; + _isRar5 = isRar5; + ArchiveEncoding = archiveEncoding; + if (IsRar5) + { + HeaderCrc = await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false); + reader.ResetCrc(); + HeaderSize = (int) + await reader.ReadRarVIntUInt32Async(3, cancellationToken).ConfigureAwait(false); + reader.Mark(); + HeaderCode = await reader + .ReadRarVIntByteAsync(cancellationToken: cancellationToken) + .ConfigureAwait(false); + HeaderFlags = await reader + .ReadRarVIntUInt16Async(2, cancellationToken) + .ConfigureAwait(false); + + if (HasHeaderFlag(HeaderFlagsV5.HAS_EXTRA)) + { + ExtraSize = await reader + .ReadRarVIntUInt32Async(cancellationToken: cancellationToken) + .ConfigureAwait(false); + } + if (HasHeaderFlag(HeaderFlagsV5.HAS_DATA)) + { + AdditionalDataSize = (long) + await reader + .ReadRarVIntAsync(cancellationToken: cancellationToken) + .ConfigureAwait(false); + } + } + else + { + reader.Mark(); + HeaderCrc = await reader.ReadUInt16Async(cancellationToken).ConfigureAwait(false); + reader.ResetCrc(); + HeaderCode = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + HeaderFlags = await reader.ReadUInt16Async(cancellationToken).ConfigureAwait(false); + HeaderSize = await reader.ReadInt16Async(cancellationToken).ConfigureAwait(false); + if (HasHeaderFlag(HeaderFlagsV4.HAS_DATA)) + { + AdditionalDataSize = await reader + .ReadUInt32Async(cancellationToken) + .ConfigureAwait(false); + } + } + } + + internal static async ValueTask CreateChildAsync( + RarHeader header, + AsyncRarCrcBinaryReader reader, + HeaderType headerType, + CancellationToken cancellationToken = default + ) + where T : RarHeader, new() + { + var child = new T() { ArchiveEncoding = header.ArchiveEncoding }; + child._headerType = headerType; + child._isRar5 = header.IsRar5; + child.HeaderCrc = header.HeaderCrc; + child.HeaderCode = header.HeaderCode; + child.HeaderFlags = header.HeaderFlags; + child.HeaderSize = header.HeaderSize; + child.ExtraSize = header.ExtraSize; + child.AdditionalDataSize = header.AdditionalDataSize; + await child.ReadFinishAsync(reader, cancellationToken).ConfigureAwait(false); + + var n = child.RemainingHeaderBytesAsync(reader); + if (n > 0) + { + await reader.ReadBytesAsync(n, cancellationToken).ConfigureAwait(false); + } + + child.VerifyHeaderCrc(reader.GetCrc32()); + return child; + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/RarHeader.cs b/src/SharpCompress/Common/Rar/Headers/RarHeader.cs index 3ca76ab92..23e080601 100644 --- a/src/SharpCompress/Common/Rar/Headers/RarHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/RarHeader.cs @@ -1,14 +1,22 @@ using System; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; using SharpCompress.IO; namespace SharpCompress.Common.Rar.Headers; // http://www.forensicswiki.org/w/images/5/5b/RARFileStructure.txt // https://www.rarlab.com/technote.htm -internal class RarHeader : IRarHeader +internal partial class RarHeader : IRarHeader { - private readonly HeaderType _headerType; - private readonly bool _isRar5; + private HeaderType _headerType; + private bool _isRar5; + + protected RarHeader() + { + ArchiveEncoding = new ArchiveEncoding(); + } internal static RarHeader? TryReadBase( RarCrcBinaryReader reader, @@ -18,7 +26,9 @@ IArchiveEncoding archiveEncoding { try { - return new RarHeader(reader, isRar5, archiveEncoding); + var header = new RarHeader(); + header.Initialize(reader, isRar5, archiveEncoding); + return header; } catch (InvalidFormatException) { @@ -26,7 +36,11 @@ IArchiveEncoding archiveEncoding } } - private RarHeader(RarCrcBinaryReader reader, bool isRar5, IArchiveEncoding archiveEncoding) + private void Initialize( + RarCrcBinaryReader reader, + bool isRar5, + IArchiveEncoding archiveEncoding + ) { _headerType = HeaderType.Null; _isRar5 = isRar5; @@ -64,34 +78,48 @@ private RarHeader(RarCrcBinaryReader reader, bool isRar5, IArchiveEncoding archi } } - protected RarHeader(RarHeader header, RarCrcBinaryReader reader, HeaderType headerType) + internal static T CreateChild( + RarHeader header, + RarCrcBinaryReader reader, + HeaderType headerType + ) + where T : RarHeader, new() { - _headerType = headerType; - _isRar5 = header.IsRar5; - HeaderCrc = header.HeaderCrc; - HeaderCode = header.HeaderCode; - HeaderFlags = header.HeaderFlags; - HeaderSize = header.HeaderSize; - ExtraSize = header.ExtraSize; - AdditionalDataSize = header.AdditionalDataSize; - ArchiveEncoding = header.ArchiveEncoding; - ReadFinish(reader); - - var n = RemainingHeaderBytes(reader); + var child = new T() { ArchiveEncoding = header.ArchiveEncoding }; + child._headerType = headerType; + child._isRar5 = header.IsRar5; + child.HeaderCrc = header.HeaderCrc; + child.HeaderCode = header.HeaderCode; + child.HeaderFlags = header.HeaderFlags; + child.HeaderSize = header.HeaderSize; + child.ExtraSize = header.ExtraSize; + child.AdditionalDataSize = header.AdditionalDataSize; + child.ReadFinish(reader); + + var n = child.RemainingHeaderBytes(reader); if (n > 0) { reader.ReadBytes(n); } - VerifyHeaderCrc(reader.GetCrc32()); + child.VerifyHeaderCrc(reader.GetCrc32()); + return child; } protected int RemainingHeaderBytes(MarkingBinaryReader reader) => checked(HeaderSize - (int)reader.CurrentReadByteCount); + protected int RemainingHeaderBytesAsync(AsyncMarkingBinaryReader reader) => + checked(HeaderSize - (int)reader.CurrentReadByteCount); + protected virtual void ReadFinish(MarkingBinaryReader reader) => throw new NotImplementedException(); + protected virtual ValueTask ReadFinishAsync( + AsyncMarkingBinaryReader reader, + CancellationToken cancellationToken = default + ) => throw new NotImplementedException(); + private void VerifyHeaderCrc(uint crc32) { var b = (IsRar5 ? crc32 : (ushort)crc32) == HeaderCrc; @@ -103,27 +131,27 @@ private void VerifyHeaderCrc(uint crc32) public HeaderType HeaderType => _headerType; - protected bool IsRar5 => _isRar5; + internal bool IsRar5 => _isRar5; - protected uint HeaderCrc { get; } + protected uint HeaderCrc { get; private set; } - internal byte HeaderCode { get; } + internal byte HeaderCode { get; private set; } - protected ushort HeaderFlags { get; } + protected ushort HeaderFlags { get; private set; } protected bool HasHeaderFlag(ushort flag) => (HeaderFlags & flag) == flag; - protected int HeaderSize { get; } + protected int HeaderSize { get; private set; } - internal IArchiveEncoding ArchiveEncoding { get; } + internal IArchiveEncoding ArchiveEncoding { get; private set; } /// /// Extra header size. /// - protected uint ExtraSize { get; } + protected uint ExtraSize { get; private set; } /// /// Size of additional data (eg file contents) /// - protected long AdditionalDataSize { get; } + protected long AdditionalDataSize { get; private set; } } diff --git a/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.Async.cs b/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.Async.cs new file mode 100644 index 000000000..38b88b254 --- /dev/null +++ b/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.Async.cs @@ -0,0 +1,256 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar; +using SharpCompress.IO; +using SharpCompress.Readers; + +namespace SharpCompress.Common.Rar.Headers; + +public partial class RarHeaderFactory +{ + public async IAsyncEnumerable ReadHeadersAsync(Stream stream) + { + var markHeader = await MarkHeader + .ReadAsync( + stream, + Options.LeaveStreamOpen, + Options.LookForHeader, + CancellationToken.None + ) + .ConfigureAwait(false); + _isRar5 = markHeader.IsRar5; + yield return markHeader; + + RarHeader? header; + while ( + ( + header = await TryReadNextHeaderAsync(stream, CancellationToken.None) + .ConfigureAwait(false) + ) != null + ) + { + yield return header; + if (header.HeaderType == HeaderType.EndArchive) + { + // End of archive marker. RAR does not read anything after this header letting to use third + // party tools to add extra information such as a digital signature to archive. + yield break; + } + } + } + + private async ValueTask TryReadNextHeaderAsync( + Stream stream, + CancellationToken cancellationToken + ) + { + AsyncRarCrcBinaryReader reader; + if (!IsEncrypted) + { + reader = new AsyncRarCrcBinaryReader(stream); + } + else + { + if (Options.Password is null) + { + throw new CryptographicException( + "Encrypted Rar archive has no password specified." + ); + } + + if (_isRar5 && _cryptInfo != null) + { + await _cryptInfo.ReadInitVAsync(new AsyncMarkingBinaryReader(stream)); + var _headerKey = new CryptKey5(Options.Password!, _cryptInfo); + + reader = await AsyncRarCryptoBinaryReader.Create( + stream, + _headerKey, + _cryptInfo.Salt + ); + } + else + { + var key = new CryptKey3(Options.Password); + reader = await AsyncRarCryptoBinaryReader.Create(stream, key); + } + } + + var header = await RarHeader + .TryReadBaseAsync(reader, _isRar5, Options.ArchiveEncoding, cancellationToken) + .ConfigureAwait(false); + if (header is null) + { + return null; + } + switch (header.HeaderCode) + { + case HeaderCodeV.RAR5_ARCHIVE_HEADER: + case HeaderCodeV.RAR4_ARCHIVE_HEADER: + { + var ah = await ArchiveHeader + .CreateAsync(header, reader, cancellationToken) + .ConfigureAwait(false); + if (ah.IsEncrypted == true) + { + //!!! rar5 we don't know yet + IsEncrypted = true; + } + return ah; + } + + case HeaderCodeV.RAR4_PROTECT_HEADER: + { + var ph = await ProtectHeader + .CreateAsync(header, reader, cancellationToken) + .ConfigureAwait(false); + // skip the recovery record data, we do not use it. + switch (StreamingMode) + { + case StreamingMode.Seekable: + { + reader.BaseStream.Position += ph.DataSize; + } + break; + case StreamingMode.Streaming: + { + await reader + .BaseStream.SkipAsync(ph.DataSize, cancellationToken) + .ConfigureAwait(false); + } + break; + default: + { + throw new InvalidFormatException("Invalid StreamingMode"); + } + } + return ph; + } + + case HeaderCodeV.RAR5_SERVICE_HEADER: + { + var fh = await FileHeader + .CreateAsync(header, reader, HeaderType.Service, cancellationToken) + .ConfigureAwait(false); + if (fh.FileName == "CMT") + { + fh.PackedStream = new ReadOnlySubStream(reader.BaseStream, fh.CompressedSize); + } + else + { + await SkipDataAsync(fh, reader, cancellationToken).ConfigureAwait(false); + } + return fh; + } + + case HeaderCodeV.RAR4_NEW_SUB_HEADER: + { + var fh = await FileHeader + .CreateAsync(header, reader, HeaderType.NewSub, cancellationToken) + .ConfigureAwait(false); + await SkipDataAsync(fh, reader, cancellationToken).ConfigureAwait(false); + return fh; + } + + case HeaderCodeV.RAR5_FILE_HEADER: + case HeaderCodeV.RAR4_FILE_HEADER: + { + var fh = await FileHeader + .CreateAsync(header, reader, HeaderType.File, cancellationToken) + .ConfigureAwait(false); + switch (StreamingMode) + { + case StreamingMode.Seekable: + { + fh.DataStartPosition = reader.BaseStream.Position; + reader.BaseStream.Position += fh.CompressedSize; + } + break; + case StreamingMode.Streaming: + { + var ms = new ReadOnlySubStream(reader.BaseStream, fh.CompressedSize); + if (fh.R4Salt is null && fh.Rar5CryptoInfo is null) + { + fh.PackedStream = ms; + } + else + { + fh.PackedStream = new RarCryptoWrapper( + ms, + fh.R4Salt is null + ? fh.Rar5CryptoInfo.NotNull().Salt + : fh.R4Salt, + fh.R4Salt is null + ? new CryptKey5( + Options.Password, + fh.Rar5CryptoInfo.NotNull() + ) + : new CryptKey3(Options.Password) + ); + } + } + break; + default: + { + throw new InvalidFormatException("Invalid StreamingMode"); + } + } + return fh; + } + case HeaderCodeV.RAR5_END_ARCHIVE_HEADER: + case HeaderCodeV.RAR4_END_ARCHIVE_HEADER: + { + return await EndArchiveHeader + .CreateAsync(header, reader, cancellationToken) + .ConfigureAwait(false); + } + case HeaderCodeV.RAR5_ARCHIVE_ENCRYPTION_HEADER: + { + var cryptoHeader = await ArchiveCryptHeader + .CreateAsync(header, reader, cancellationToken) + .ConfigureAwait(false); + IsEncrypted = true; + _cryptInfo = cryptoHeader.CryptInfo; + + return cryptoHeader; + } + default: + { + throw new InvalidFormatException("Unknown Rar Header: " + header.HeaderCode); + } + } + } + + private async ValueTask SkipDataAsync( + FileHeader fh, + AsyncRarCrcBinaryReader reader, + CancellationToken cancellationToken + ) + { + switch (StreamingMode) + { + case StreamingMode.Seekable: + { + fh.DataStartPosition = reader.BaseStream.Position; + reader.BaseStream.Position += fh.CompressedSize; + } + break; + case StreamingMode.Streaming: + { + //skip the data because it's useless? + await reader + .BaseStream.SkipAsync(fh.CompressedSize, cancellationToken) + .ConfigureAwait(false); + } + break; + default: + { + throw new InvalidFormatException("Invalid StreamingMode"); + } + } + } +} diff --git a/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs b/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs index 902e595f2..e9694c2a6 100644 --- a/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs +++ b/src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs @@ -1,11 +1,14 @@ +using System; using System.Collections.Generic; using System.IO; +using System.Linq; +using SharpCompress.Common.Rar; using SharpCompress.IO; using SharpCompress.Readers; namespace SharpCompress.Common.Rar.Headers; -public class RarHeaderFactory +public partial class RarHeaderFactory { private bool _isRar5; @@ -61,12 +64,12 @@ public IEnumerable ReadHeaders(Stream stream) _cryptInfo.ReadInitV(new MarkingBinaryReader(stream)); var _headerKey = new CryptKey5(Options.Password!, _cryptInfo); - reader = new RarCryptoBinaryReader(stream, _headerKey, _cryptInfo.Salt); + reader = RarCryptoBinaryReader.Create(stream, _headerKey, _cryptInfo.Salt); } else { var key = new CryptKey3(Options.Password); - reader = new RarCryptoBinaryReader(stream, key); + reader = RarCryptoBinaryReader.Create(stream, key); } } @@ -80,7 +83,7 @@ public IEnumerable ReadHeaders(Stream stream) case HeaderCodeV.RAR5_ARCHIVE_HEADER: case HeaderCodeV.RAR4_ARCHIVE_HEADER: { - var ah = new ArchiveHeader(header, reader); + var ah = ArchiveHeader.Create(header, reader); if (ah.IsEncrypted == true) { //!!! rar5 we don't know yet @@ -91,7 +94,7 @@ public IEnumerable ReadHeaders(Stream stream) case HeaderCodeV.RAR4_PROTECT_HEADER: { - var ph = new ProtectHeader(header, reader); + var ph = ProtectHeader.Create(header, reader); // skip the recovery record data, we do not use it. switch (StreamingMode) { @@ -116,7 +119,7 @@ public IEnumerable ReadHeaders(Stream stream) case HeaderCodeV.RAR5_SERVICE_HEADER: { - var fh = new FileHeader(header, reader, HeaderType.Service); + var fh = FileHeader.Create(header, reader, HeaderType.Service); if (fh.FileName == "CMT") { fh.PackedStream = new ReadOnlySubStream(reader.BaseStream, fh.CompressedSize); @@ -130,7 +133,7 @@ public IEnumerable ReadHeaders(Stream stream) case HeaderCodeV.RAR4_NEW_SUB_HEADER: { - var fh = new FileHeader(header, reader, HeaderType.NewSub); + var fh = FileHeader.Create(header, reader, HeaderType.NewSub); SkipData(fh, reader); return fh; } @@ -138,7 +141,7 @@ public IEnumerable ReadHeaders(Stream stream) case HeaderCodeV.RAR5_FILE_HEADER: case HeaderCodeV.RAR4_FILE_HEADER: { - var fh = new FileHeader(header, reader, HeaderType.File); + var fh = FileHeader.Create(header, reader, HeaderType.File); switch (StreamingMode) { case StreamingMode.Seekable: @@ -181,11 +184,11 @@ fh.R4Salt is null case HeaderCodeV.RAR5_END_ARCHIVE_HEADER: case HeaderCodeV.RAR4_END_ARCHIVE_HEADER: { - return new EndArchiveHeader(header, reader); + return EndArchiveHeader.Create(header, reader); } case HeaderCodeV.RAR5_ARCHIVE_ENCRYPTION_HEADER: { - var cryptoHeader = new ArchiveCryptHeader(header, reader); + var cryptoHeader = ArchiveCryptHeader.Create(header, reader); IsEncrypted = true; _cryptInfo = cryptoHeader.CryptInfo; diff --git a/src/SharpCompress/Common/Rar/Headers/SignHeader.cs b/src/SharpCompress/Common/Rar/Headers/SignHeader.cs index 837ff3dcf..f5487089e 100644 --- a/src/SharpCompress/Common/Rar/Headers/SignHeader.cs +++ b/src/SharpCompress/Common/Rar/Headers/SignHeader.cs @@ -4,13 +4,14 @@ namespace SharpCompress.Common.Rar.Headers; internal class SignHeader : RarHeader { - protected SignHeader(RarHeader header, RarCrcBinaryReader reader) - : base(header, reader, HeaderType.Sign) + public static SignHeader Create(RarHeader header, RarCrcBinaryReader reader) { - if (IsRar5) + var c = CreateChild(header, reader, HeaderType.Sign); + if (c.IsRar5) { throw new InvalidFormatException("unexpected rar5 record"); } + return c; } protected override void ReadFinish(MarkingBinaryReader reader) diff --git a/src/SharpCompress/Common/Rar/Rar5CryptoInfo.cs b/src/SharpCompress/Common/Rar/Rar5CryptoInfo.cs index 7b8edff9b..c02ac5c91 100644 --- a/src/SharpCompress/Common/Rar/Rar5CryptoInfo.cs +++ b/src/SharpCompress/Common/Rar/Rar5CryptoInfo.cs @@ -1,5 +1,7 @@ using System; using System.Security.Cryptography; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common.Rar.Headers; using SharpCompress.IO; @@ -7,44 +9,110 @@ namespace SharpCompress.Common.Rar; internal class Rar5CryptoInfo { - public Rar5CryptoInfo() { } + private Rar5CryptoInfo() { } - public Rar5CryptoInfo(MarkingBinaryReader reader, bool readInitV) + public static Rar5CryptoInfo Create(MarkingBinaryReader reader, bool readInitV) { + var cryptoInfo = new Rar5CryptoInfo(); var cryptVersion = reader.ReadRarVIntUInt32(); if (cryptVersion > EncryptionConstV5.VERSION) { throw new CryptographicException($"Unsupported crypto version of {cryptVersion}"); } var encryptionFlags = reader.ReadRarVIntUInt32(); - UsePswCheck = FlagUtility.HasFlag(encryptionFlags, EncryptionFlagsV5.CHFL_CRYPT_PSWCHECK); - LG2Count = reader.ReadRarVIntByte(1); + cryptoInfo.UsePswCheck = FlagUtility.HasFlag( + encryptionFlags, + EncryptionFlagsV5.CHFL_CRYPT_PSWCHECK + ); + cryptoInfo.LG2Count = reader.ReadRarVIntByte(1); - if (LG2Count > EncryptionConstV5.CRYPT5_KDF_LG2_COUNT_MAX) + if (cryptoInfo.LG2Count > EncryptionConstV5.CRYPT5_KDF_LG2_COUNT_MAX) { - throw new CryptographicException($"Unsupported LG2 count of {LG2Count}."); + throw new CryptographicException($"Unsupported LG2 count of {cryptoInfo.LG2Count}."); } - Salt = reader.ReadBytes(EncryptionConstV5.SIZE_SALT50); + cryptoInfo.Salt = reader.ReadBytes(EncryptionConstV5.SIZE_SALT50); if (readInitV) // File header needs to read IV here { - ReadInitV(reader); + cryptoInfo.ReadInitV(reader); } - if (UsePswCheck) + if (cryptoInfo.UsePswCheck) { - PswCheck = reader.ReadBytes(EncryptionConstV5.SIZE_PSWCHECK); + cryptoInfo.PswCheck = reader.ReadBytes(EncryptionConstV5.SIZE_PSWCHECK); var _pswCheckCsm = reader.ReadBytes(EncryptionConstV5.SIZE_PSWCHECK_CSUM); var sha = SHA256.Create(); - UsePswCheck = sha.ComputeHash(PswCheck).AsSpan().StartsWith(_pswCheckCsm.AsSpan()); + cryptoInfo.UsePswCheck = sha.ComputeHash(cryptoInfo.PswCheck) + .AsSpan() + .StartsWith(_pswCheckCsm.AsSpan()); } + return cryptoInfo; + } + + public static async ValueTask CreateAsync( + AsyncMarkingBinaryReader reader, + bool readInitV + ) + { + var cryptoInfo = new Rar5CryptoInfo(); + var cryptVersion = await reader.ReadRarVIntUInt32Async( + cancellationToken: CancellationToken.None + ); + if (cryptVersion > EncryptionConstV5.VERSION) + { + throw new CryptographicException($"Unsupported crypto version of {cryptVersion}"); + } + var encryptionFlags = await reader.ReadRarVIntUInt32Async( + cancellationToken: CancellationToken.None + ); + cryptoInfo.UsePswCheck = FlagUtility.HasFlag( + encryptionFlags, + EncryptionFlagsV5.CHFL_CRYPT_PSWCHECK + ); + cryptoInfo.LG2Count = (int) + await reader.ReadRarVIntUInt32Async(cancellationToken: CancellationToken.None); + if (cryptoInfo.LG2Count > EncryptionConstV5.CRYPT5_KDF_LG2_COUNT_MAX) + { + throw new CryptographicException($"Unsupported LG2 count of {cryptoInfo.LG2Count}."); + } + + cryptoInfo.Salt = await reader.ReadBytesAsync( + EncryptionConstV5.SIZE_SALT50, + CancellationToken.None + ); + + if (readInitV) + { + await cryptoInfo.ReadInitVAsync(reader); + } + + if (cryptoInfo.UsePswCheck) + { + cryptoInfo.PswCheck = await reader.ReadBytesAsync( + EncryptionConstV5.SIZE_PSWCHECK, + CancellationToken.None + ); + var _pswCheckCsm = await reader.ReadBytesAsync( + EncryptionConstV5.SIZE_PSWCHECK_CSUM, + CancellationToken.None + ); + + var sha = SHA256.Create(); + cryptoInfo.UsePswCheck = sha.ComputeHash(cryptoInfo.PswCheck) + .AsSpan() + .StartsWith(_pswCheckCsm.AsSpan()); + } + return cryptoInfo; } public void ReadInitV(MarkingBinaryReader reader) => InitV = reader.ReadBytes(EncryptionConstV5.SIZE_INITV); + public async ValueTask ReadInitVAsync(AsyncMarkingBinaryReader reader) => + InitV = await reader.ReadBytesAsync(EncryptionConstV5.SIZE_INITV, CancellationToken.None); + public bool UsePswCheck = false; public int LG2Count = 0; diff --git a/src/SharpCompress/Common/Rar/RarCryptoBinaryReader.cs b/src/SharpCompress/Common/Rar/RarCryptoBinaryReader.cs index 6e44286b2..319cf4c59 100644 --- a/src/SharpCompress/Common/Rar/RarCryptoBinaryReader.cs +++ b/src/SharpCompress/Common/Rar/RarCryptoBinaryReader.cs @@ -1,5 +1,3 @@ -#nullable disable - using System.Collections.Generic; using System.IO; using SharpCompress.Common.Rar.Headers; @@ -9,21 +7,29 @@ namespace SharpCompress.Common.Rar; internal sealed class RarCryptoBinaryReader : RarCrcBinaryReader { - private BlockTransformer _rijndael; + private BlockTransformer _rijndael = default!; private readonly Queue _data = new(); private long _readCount; - public RarCryptoBinaryReader(Stream stream, ICryptKey cryptKey) - : base(stream) + private RarCryptoBinaryReader(Stream stream) + : base(stream) { } + + public static RarCryptoBinaryReader Create( + Stream stream, + ICryptKey cryptKey, + byte[]? salt = null + ) { - var salt = base.ReadBytes(EncryptionConstV5.SIZE_SALT30); - _readCount += EncryptionConstV5.SIZE_SALT30; - _rijndael = new BlockTransformer(cryptKey.Transformer(salt)); + var binary = new RarCryptoBinaryReader(stream); + if (salt == null) + { + salt = binary.ReadBytesBase(EncryptionConstV5.SIZE_SALT30); + binary._readCount += EncryptionConstV5.SIZE_SALT30; + } + binary._rijndael = new BlockTransformer(cryptKey.Transformer(salt)); + return binary; } - public RarCryptoBinaryReader(Stream stream, ICryptKey cryptKey, byte[] salt) - : base(stream) => _rijndael = new BlockTransformer(cryptKey.Transformer(salt)); - // track read count ourselves rather than using the underlying stream since we buffer public override long CurrentReadByteCount { @@ -40,6 +46,8 @@ protected set public override byte[] ReadBytes(int count) => ReadAndDecryptBytes(count); + private byte[] ReadBytesBase(int count) => base.ReadBytes(count); + private byte[] ReadAndDecryptBytes(int count) { var queueSize = _data.Count; diff --git a/src/SharpCompress/Common/Rar/RarVolume.cs b/src/SharpCompress/Common/Rar/RarVolume.cs index 4bb2f84a4..2a45e6daa 100644 --- a/src/SharpCompress/Common/Rar/RarVolume.cs +++ b/src/SharpCompress/Common/Rar/RarVolume.cs @@ -2,7 +2,10 @@ using System.Collections.Generic; using System.IO; using System.Linq; +using System.Runtime.CompilerServices; using System.Text; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common.Rar.Headers; using SharpCompress.IO; using SharpCompress.Readers; @@ -26,6 +29,8 @@ internal RarVolume(StreamingMode mode, Stream stream, ReaderOptions options, int internal abstract IEnumerable ReadFileParts(); + internal abstract IAsyncEnumerable ReadFilePartsAsync(); + internal abstract RarFilePart CreateFilePart(MarkHeader markHeader, FileHeader fileHeader); internal IEnumerable GetVolumeFileParts() @@ -71,6 +76,55 @@ internal IEnumerable GetVolumeFileParts() } } + internal async IAsyncEnumerable GetVolumeFilePartsAsync( + [EnumeratorCancellation] CancellationToken cancellationToken = default + ) + { + MarkHeader? lastMarkHeader = null; + await foreach ( + var header in _headerFactory + .ReadHeadersAsync(Stream) + .WithCancellation(cancellationToken) + ) + { + switch (header.HeaderType) + { + case HeaderType.Mark: + { + lastMarkHeader = (MarkHeader)header; + } + break; + case HeaderType.Archive: + { + ArchiveHeader = (ArchiveHeader)header; + } + break; + case HeaderType.File: + { + var fh = (FileHeader)header; + if (_maxCompressionAlgorithm < fh.CompressionAlgorithm) + { + _maxCompressionAlgorithm = fh.CompressionAlgorithm; + } + + yield return CreateFilePart(lastMarkHeader!, fh); + } + break; + case HeaderType.Service: + { + var fh = (FileHeader)header; + if (fh.FileName == "CMT") + { + var buffer = new byte[fh.CompressedSize]; + fh.PackedStream.NotNull().ReadFully(buffer); + Comment = Encoding.UTF8.GetString(buffer, 0, buffer.Length - 1); + } + } + break; + } + } + } + private void EnsureArchiveHeaderLoaded() { if (ArchiveHeader is null) @@ -126,6 +180,12 @@ public bool IsSolidArchive } } + public async ValueTask IsSolidArchiveAsync(CancellationToken cancellationToken = default) + { + await EnsureArchiveHeaderLoadedAsync(cancellationToken); + return ArchiveHeader?.IsSolid ?? false; + } + public int MinVersion { get @@ -174,5 +234,68 @@ public int MaxVersion } } + private async ValueTask EnsureArchiveHeaderLoadedAsync(CancellationToken cancellationToken) + { + if (ArchiveHeader is null) + { + if (Mode == StreamingMode.Streaming) + { + throw new InvalidOperationException( + "ArchiveHeader should never been null in a streaming read." + ); + } + + // we only want to load the archive header to avoid overhead but have to do the nasty thing and reset the stream + await GetVolumeFilePartsAsync(cancellationToken).FirstAsync(); + Stream.Position = 0; + } + } + + public virtual async ValueTask MinVersionAsync( + CancellationToken cancellationToken = default + ) + { + await EnsureArchiveHeaderLoadedAsync(cancellationToken).ConfigureAwait(false); + if (_maxCompressionAlgorithm >= 50) + { + return 5; //5-6 + } + else if (_maxCompressionAlgorithm >= 29) + { + return 3; //3-4 + } + else if (_maxCompressionAlgorithm >= 20) + { + return 2; //2 + } + else + { + return 1; + } + } + + public virtual async ValueTask MaxVersionAsync( + CancellationToken cancellationToken = default + ) + { + await EnsureArchiveHeaderLoadedAsync(cancellationToken).ConfigureAwait(false); + if (_maxCompressionAlgorithm >= 50) + { + return 6; //5-6 + } + else if (_maxCompressionAlgorithm >= 29) + { + return 4; //3-4 + } + else if (_maxCompressionAlgorithm >= 20) + { + return 2; //2 + } + else + { + return 1; + } + } + public string? Comment { get; internal set; } } diff --git a/src/SharpCompress/Common/SevenZip/ArchiveReader.Async.cs b/src/SharpCompress/Common/SevenZip/ArchiveReader.Async.cs new file mode 100644 index 000000000..426a7a5c5 --- /dev/null +++ b/src/SharpCompress/Common/SevenZip/ArchiveReader.Async.cs @@ -0,0 +1,158 @@ +#nullable disable + +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.LZMA; +using SharpCompress.Compressors.LZMA.Utilites; +using SharpCompress.IO; + +namespace SharpCompress.Common.SevenZip; + +internal sealed partial class ArchiveReader +{ + public async ValueTask OpenAsync( + Stream stream, + bool lookForHeader, + CancellationToken cancellationToken = default + ) + { + Close(); + + _streamOrigin = stream.Position; + _streamEnding = stream.Length; + + var canScan = lookForHeader ? 0x80000 - 20 : 0; + while (true) + { + // TODO: Check Signature! + _header = new byte[0x20]; + await stream.ReadExactAsync(_header, 0, 0x20, cancellationToken); + + if ( + !lookForHeader + || _header + .AsSpan(0, length: 6) + .SequenceEqual([0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C]) + ) + { + break; + } + + if (canScan == 0) + { + throw new InvalidFormatException("Unable to find 7z signature"); + } + + canScan--; + stream.Position = ++_streamOrigin; + } + + _stream = stream; + } + + public async ValueTask ReadDatabaseAsync( + IPasswordProvider pass, + CancellationToken cancellationToken = default + ) + { + var db = new ArchiveDatabase(pass); + db.Clear(); + + db._majorVersion = _header[6]; + db._minorVersion = _header[7]; + + if (db._majorVersion != 0) + { + throw new InvalidOperationException(); + } + + var crcFromArchive = DataReader.Get32(_header, 8); + var nextHeaderOffset = (long)DataReader.Get64(_header, 0xC); + var nextHeaderSize = (long)DataReader.Get64(_header, 0x14); + var nextHeaderCrc = DataReader.Get32(_header, 0x1C); + + var crc = Crc.INIT_CRC; + crc = Crc.Update(crc, nextHeaderOffset); + crc = Crc.Update(crc, nextHeaderSize); + crc = Crc.Update(crc, nextHeaderCrc); + crc = Crc.Finish(crc); + + if (crc != crcFromArchive) + { + throw new InvalidOperationException(); + } + + db._startPositionAfterHeader = _streamOrigin + 0x20; + + // empty header is ok + if (nextHeaderSize == 0) + { + db.Fill(); + return db; + } + + if (nextHeaderOffset < 0 || nextHeaderSize < 0 || nextHeaderSize > int.MaxValue) + { + throw new InvalidOperationException(); + } + + if (nextHeaderOffset > _streamEnding - db._startPositionAfterHeader) + { + throw new InvalidOperationException("nextHeaderOffset is invalid"); + } + + _stream.Seek(nextHeaderOffset, SeekOrigin.Current); + + var header = new byte[nextHeaderSize]; + await _stream.ReadExactAsync(header, 0, header.Length, cancellationToken); + + if (Crc.Finish(Crc.Update(Crc.INIT_CRC, header, 0, header.Length)) != nextHeaderCrc) + { + throw new InvalidOperationException(); + } + + using (var streamSwitch = new CStreamSwitch()) + { + streamSwitch.Set(this, header); + + var type = ReadId(); + if (type != BlockType.Header) + { + if (type != BlockType.EncodedHeader) + { + throw new InvalidOperationException(); + } + + var dataVector = ReadAndDecodePackedStreams( + db._startPositionAfterHeader, + db.PasswordProvider + ); + + // compressed header without content is odd but ok + if (dataVector.Count == 0) + { + db.Fill(); + return db; + } + + if (dataVector.Count != 1) + { + throw new InvalidOperationException(); + } + + streamSwitch.Set(this, dataVector[0]); + + if (ReadId() != BlockType.Header) + { + throw new InvalidOperationException(); + } + } + + ReadHeader(db, db.PasswordProvider); + } + db.Fill(); + return db; + } +} diff --git a/src/SharpCompress/Common/SevenZip/ArchiveReader.cs b/src/SharpCompress/Common/SevenZip/ArchiveReader.cs index 288a72989..bb19b4b14 100644 --- a/src/SharpCompress/Common/SevenZip/ArchiveReader.cs +++ b/src/SharpCompress/Common/SevenZip/ArchiveReader.cs @@ -5,13 +5,15 @@ using System.Diagnostics; using System.IO; using System.Linq; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Compressors.LZMA; using SharpCompress.Compressors.LZMA.Utilites; using SharpCompress.IO; namespace SharpCompress.Common.SevenZip; -internal class ArchiveReader +internal partial class ArchiveReader { internal Stream _stream; internal Stack _readerStack = new(); @@ -1270,6 +1272,8 @@ public void Open(Stream stream, bool lookForHeader) _stream = stream; } + // OpenAsync moved to ArchiveReader.Async.cs + public void Close() { _stream?.Dispose(); @@ -1383,6 +1387,8 @@ public ArchiveDatabase ReadDatabase(IPasswordProvider pass) return db; } + // ReadDatabaseAsync moved to ArchiveReader.Async.cs + internal class CExtractFolderInfo { internal int _fileIndex; diff --git a/src/SharpCompress/Common/Tar/Headers/TarHeader.Async.cs b/src/SharpCompress/Common/Tar/Headers/TarHeader.Async.cs new file mode 100644 index 000000000..e3ca687fc --- /dev/null +++ b/src/SharpCompress/Common/Tar/Headers/TarHeader.Async.cs @@ -0,0 +1,339 @@ +using System; +using System.Buffers; +using System.Buffers.Binary; +using System.Collections.Generic; +using System.IO; +using System.Text; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Tar.Headers; + +internal sealed partial class TarHeader +{ + internal async ValueTask WriteAsync( + Stream output, + CancellationToken cancellationToken = default + ) + { + switch (WriteFormat) + { + case TarHeaderWriteFormat.GNU_TAR_LONG_LINK: + await WriteGnuTarLongLinkAsync(output, cancellationToken); + break; + case TarHeaderWriteFormat.USTAR: + await WriteUstarAsync(output, cancellationToken); + break; + default: + throw new Exception("This should be impossible..."); + } + } + + private async ValueTask WriteUstarAsync(Stream output, CancellationToken cancellationToken) + { + var buffer = new byte[BLOCK_SIZE]; + + WriteOctalBytes(511, buffer, 100, 8); + WriteOctalBytes(0, buffer, 108, 8); + WriteOctalBytes(0, buffer, 116, 8); + + var nameByteCount = ArchiveEncoding + .GetEncoding() + .GetByteCount(Name.NotNull("Name is null")); + + if (nameByteCount > 100) + { + string fullName = Name.NotNull("Name is null"); + + List dirSeps = new List(); + for (int i = 0; i < fullName.Length; i++) + { + if (fullName[i] == Path.DirectorySeparatorChar) + { + dirSeps.Add(i); + } + } + + int splitIndex = -1; + for (int i = 0; i < dirSeps.Count; i++) + { + int count = ArchiveEncoding + .GetEncoding() + .GetByteCount(fullName.Substring(0, dirSeps[i])); + if (count < 155) + { + splitIndex = dirSeps[i]; + } + else + { + break; + } + } + + if (splitIndex == -1) + { + throw new Exception( + $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Directory separator not found! Try using GNU Tar format instead!" + ); + } + + string namePrefix = fullName.Substring(0, splitIndex); + string name = fullName.Substring(splitIndex + 1); + + if (this.ArchiveEncoding.GetEncoding().GetByteCount(namePrefix) >= 155) + { + throw new Exception( + $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Try using GNU Tar format instead!" + ); + } + + if (this.ArchiveEncoding.GetEncoding().GetByteCount(name) >= 100) + { + throw new Exception( + $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Try using GNU Tar format instead!" + ); + } + + WriteStringBytes(ArchiveEncoding.Encode(namePrefix), buffer, 345, 100); + WriteStringBytes(ArchiveEncoding.Encode(name), buffer, 100); + } + else + { + WriteStringBytes(ArchiveEncoding.Encode(Name.NotNull("Name is null")), buffer, 100); + } + + WriteOctalBytes(Size, buffer, 124, 12); + var time = (long)(LastModifiedTime.ToUniversalTime() - EPOCH).TotalSeconds; + WriteOctalBytes(time, buffer, 136, 12); + buffer[156] = (byte)EntryType; + + WriteStringBytes(Encoding.ASCII.GetBytes("ustar"), buffer, 257, 6); + buffer[263] = 0x30; + buffer[264] = 0x30; + + var crc = RecalculateChecksum(buffer); + WriteOctalBytes(crc, buffer, 148, 8); + + await output.WriteAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + } + + private async ValueTask WriteGnuTarLongLinkAsync( + Stream output, + CancellationToken cancellationToken + ) + { + var buffer = new byte[BLOCK_SIZE]; + + WriteOctalBytes(511, buffer, 100, 8); + WriteOctalBytes(0, buffer, 108, 8); + WriteOctalBytes(0, buffer, 116, 8); + + var nameByteCount = ArchiveEncoding + .GetEncoding() + .GetByteCount(Name.NotNull("Name is null")); + if (nameByteCount > 100) + { + WriteStringBytes("././@LongLink", buffer, 0, 100); + buffer[156] = (byte)EntryType.LongName; + WriteOctalBytes(nameByteCount + 1, buffer, 124, 12); + } + else + { + WriteStringBytes(ArchiveEncoding.Encode(Name.NotNull("Name is null")), buffer, 100); + WriteOctalBytes(Size, buffer, 124, 12); + var time = (long)(LastModifiedTime.ToUniversalTime() - EPOCH).TotalSeconds; + WriteOctalBytes(time, buffer, 136, 12); + buffer[156] = (byte)EntryType; + + if (Size >= 0x1FFFFFFFF) + { + Span bytes12 = stackalloc byte[12]; + BinaryPrimitives.WriteInt64BigEndian(bytes12.Slice(4), Size); + bytes12[0] |= 0x80; + bytes12.CopyTo(buffer.AsSpan(124)); + } + } + + var crc = RecalculateChecksum(buffer); + WriteOctalBytes(crc, buffer, 148, 8); + + await output.WriteAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + + if (nameByteCount > 100) + { + await WriteLongFilenameHeaderAsync(output, cancellationToken); + Name = ArchiveEncoding.Decode( + ArchiveEncoding.Encode(Name.NotNull("Name is null")), + 0, + 100 - ArchiveEncoding.GetEncoding().GetMaxByteCount(1) + ); + await WriteGnuTarLongLinkAsync(output, cancellationToken); + } + } + + private async ValueTask WriteLongFilenameHeaderAsync( + Stream output, + CancellationToken cancellationToken + ) + { + var nameBytes = ArchiveEncoding.Encode(Name.NotNull("Name is null")); + await output + .WriteAsync(nameBytes, 0, nameBytes.Length, cancellationToken) + .ConfigureAwait(false); + + var numPaddingBytes = BLOCK_SIZE - (nameBytes.Length % BLOCK_SIZE); + if (numPaddingBytes == 0) + { + numPaddingBytes = BLOCK_SIZE; + } + + await output + .WriteAsync(new byte[numPaddingBytes], 0, numPaddingBytes, cancellationToken) + .ConfigureAwait(false); + } + + internal async ValueTask ReadAsync(AsyncBinaryReader reader) + { + string? longName = null; + string? longLinkName = null; + var hasLongValue = true; + byte[] buffer; + EntryType entryType; + + do + { + buffer = await ReadBlockAsync(reader); + + if (buffer.Length == 0) + { + return false; + } + + entryType = ReadEntryType(buffer); + + // LongName and LongLink headers can follow each other and need + // to apply to the header that follows them. + if (entryType == EntryType.LongName) + { + longName = await ReadLongNameAsync(reader, buffer); + continue; + } + else if (entryType == EntryType.LongLink) + { + longLinkName = await ReadLongNameAsync(reader, buffer); + continue; + } + + hasLongValue = false; + } while (hasLongValue); + + // Check header checksum + if (!checkChecksum(buffer)) + { + return false; + } + + Name = longName ?? ArchiveEncoding.Decode(buffer, 0, 100).TrimNulls(); + EntryType = entryType; + Size = ReadSize(buffer); + + // for symlinks, additionally read the linkname + if (entryType == EntryType.SymLink || entryType == EntryType.HardLink) + { + LinkName = longLinkName ?? ArchiveEncoding.Decode(buffer, 157, 100).TrimNulls(); + } + + Mode = ReadAsciiInt64Base8(buffer, 100, 7); + + if (entryType == EntryType.Directory) + { + Mode |= 0b1_000_000_000; + } + + UserId = ReadAsciiInt64Base8oldGnu(buffer, 108, 7); + GroupId = ReadAsciiInt64Base8oldGnu(buffer, 116, 7); + + var unixTimeStamp = ReadAsciiInt64Base8(buffer, 136, 11); + + LastModifiedTime = EPOCH.AddSeconds(unixTimeStamp).ToLocalTime(); + Magic = ArchiveEncoding.Decode(buffer, 257, 6).TrimNulls(); + + if (!string.IsNullOrEmpty(Magic) && "ustar".Equals(Magic)) + { + var namePrefix = ArchiveEncoding.Decode(buffer, 345, 157).TrimNulls(); + + if (!string.IsNullOrEmpty(namePrefix)) + { + Name = namePrefix + "/" + Name; + } + } + + if (entryType != EntryType.LongName && Name.Length == 0) + { + return false; + } + + return true; + } + + private static async ValueTask ReadBlockAsync(AsyncBinaryReader reader) + { + var buffer = ArrayPool.Shared.Rent(BLOCK_SIZE); + try + { + await reader.ReadBytesAsync(buffer, 0, BLOCK_SIZE); + + if (buffer.Length != 0 && buffer.Length < BLOCK_SIZE) + { + throw new InvalidFormatException("Buffer is invalid size"); + } + + return buffer; + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private async ValueTask ReadLongNameAsync(AsyncBinaryReader reader, byte[] buffer) + { + var size = ReadSize(buffer); + + // Validate size to prevent memory exhaustion from malformed headers + if (size < 0 || size > MAX_LONG_NAME_SIZE) + { + throw new InvalidFormatException( + $"Long name size {size} is invalid or exceeds maximum allowed size of {MAX_LONG_NAME_SIZE} bytes" + ); + } + + var nameLength = (int)size; + var nameBytes = ArrayPool.Shared.Rent(nameLength); + try + { + await reader.ReadBytesAsync(nameBytes, 0, nameLength); + var remainingBytesToRead = BLOCK_SIZE - (nameLength % BLOCK_SIZE); + + // Read the rest of the block and discard the data + if (remainingBytesToRead < BLOCK_SIZE) + { + var remainingBytes = ArrayPool.Shared.Rent(remainingBytesToRead); + try + { + await reader.ReadBytesAsync(remainingBytes, 0, remainingBytesToRead); + } + finally + { + ArrayPool.Shared.Return(remainingBytes); + } + } + + return ArchiveEncoding.Decode(nameBytes, 0, nameLength).TrimNulls(); + } + finally + { + ArrayPool.Shared.Return(nameBytes); + } + } +} diff --git a/src/SharpCompress/Common/Tar/Headers/TarHeader.cs b/src/SharpCompress/Common/Tar/Headers/TarHeader.cs index 9fbe863f6..06224cac5 100644 --- a/src/SharpCompress/Common/Tar/Headers/TarHeader.cs +++ b/src/SharpCompress/Common/Tar/Headers/TarHeader.cs @@ -1,12 +1,14 @@ using System; +using System.Buffers; using System.Buffers.Binary; using System.Collections.Generic; using System.IO; using System.Text; +using System.Threading.Tasks; namespace SharpCompress.Common.Tar.Headers; -internal sealed class TarHeader +internal sealed partial class TarHeader { internal static readonly DateTime EPOCH = new(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc); @@ -110,14 +112,18 @@ internal void WriteUstar(Stream output) string name = fullName.Substring(splitIndex + 1); if (this.ArchiveEncoding.GetEncoding().GetByteCount(namePrefix) >= 155) + { throw new Exception( $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Try using GNU Tar format instead!" ); + } if (this.ArchiveEncoding.GetEncoding().GetByteCount(name) >= 100) + { throw new Exception( $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Try using GNU Tar format instead!" ); + } // write name prefix WriteStringBytes(ArchiveEncoding.Encode(namePrefix), buffer, 345, 100); diff --git a/src/SharpCompress/Common/Tar/TarEntry.Async.cs b/src/SharpCompress/Common/Tar/TarEntry.Async.cs new file mode 100644 index 000000000..cfa453772 --- /dev/null +++ b/src/SharpCompress/Common/Tar/TarEntry.Async.cs @@ -0,0 +1,37 @@ +using System.Collections.Generic; +using System.IO; +using SharpCompress.IO; + +namespace SharpCompress.Common.Tar; + +public partial class TarEntry +{ + internal static async IAsyncEnumerable GetEntriesAsync( + StreamingMode mode, + Stream stream, + CompressionType compressionType, + IArchiveEncoding archiveEncoding + ) + { + await foreach ( + var header in TarHeaderFactory.ReadHeaderAsync(mode, stream, archiveEncoding) + ) + { + if (header != null) + { + if (mode == StreamingMode.Seekable) + { + yield return new TarEntry(new TarFilePart(header, stream), compressionType); + } + else + { + yield return new TarEntry(new TarFilePart(header, null), compressionType); + } + } + else + { + throw new IncompleteArchiveException("Unexpected EOF reading tar file"); + } + } + } +} diff --git a/src/SharpCompress/Common/Tar/TarEntry.cs b/src/SharpCompress/Common/Tar/TarEntry.cs index 9dc5e4711..fbe93de85 100644 --- a/src/SharpCompress/Common/Tar/TarEntry.cs +++ b/src/SharpCompress/Common/Tar/TarEntry.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Common.Tar; -public class TarEntry : Entry +public partial class TarEntry : Entry { private readonly TarFilePart? _filePart; @@ -76,4 +76,6 @@ IArchiveEncoding archiveEncoding } } } + + // Async methods moved to TarEntry.Async.cs } diff --git a/src/SharpCompress/Common/Tar/TarHeaderFactory.Async.cs b/src/SharpCompress/Common/Tar/TarHeaderFactory.Async.cs new file mode 100644 index 000000000..de6422aaf --- /dev/null +++ b/src/SharpCompress/Common/Tar/TarHeaderFactory.Async.cs @@ -0,0 +1,55 @@ +using System.Collections.Generic; +using System.IO; +using SharpCompress.Common.Tar.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Common.Tar; + +internal static partial class TarHeaderFactory +{ + internal static async IAsyncEnumerable ReadHeaderAsync( + StreamingMode mode, + Stream stream, + IArchiveEncoding archiveEncoding + ) + { + while (true) + { + TarHeader? header = null; + try + { + var reader = new AsyncBinaryReader(stream, false); + header = new TarHeader(archiveEncoding); + if (!await header.ReadAsync(reader)) + { + yield break; + } + switch (mode) + { + case StreamingMode.Seekable: + { + header.DataStartPosition = stream.Position; + + //skip to nearest 512 + stream.Position += PadTo512(header.Size); + } + break; + case StreamingMode.Streaming: + { + header.PackedStream = new TarReadOnlySubStream(stream, header.Size); + } + break; + default: + { + throw new InvalidFormatException("Invalid StreamingMode"); + } + } + } + catch + { + header = null; + } + yield return header; + } + } +} diff --git a/src/SharpCompress/Common/Tar/TarHeaderFactory.cs b/src/SharpCompress/Common/Tar/TarHeaderFactory.cs index c2af1e533..c141bc8e0 100644 --- a/src/SharpCompress/Common/Tar/TarHeaderFactory.cs +++ b/src/SharpCompress/Common/Tar/TarHeaderFactory.cs @@ -5,7 +5,7 @@ namespace SharpCompress.Common.Tar; -internal static class TarHeaderFactory +internal static partial class TarHeaderFactory { internal static IEnumerable ReadHeader( StreamingMode mode, @@ -18,7 +18,7 @@ IArchiveEncoding archiveEncoding TarHeader? header = null; try { - var reader = new BinaryReader(stream); + var reader = new BinaryReader(stream, archiveEncoding.Default, leaveOpen: false); header = new TarHeader(archiveEncoding); if (!header.Read(reader)) @@ -29,10 +29,10 @@ IArchiveEncoding archiveEncoding { case StreamingMode.Seekable: { - header.DataStartPosition = reader.BaseStream.Position; + header.DataStartPosition = stream.Position; //skip to nearest 512 - reader.BaseStream.Position += PadTo512(header.Size); + stream.Position += PadTo512(header.Size); } break; case StreamingMode.Streaming: @@ -54,6 +54,8 @@ IArchiveEncoding archiveEncoding } } + // Async methods moved to TarHeaderFactory.Async.cs + private static long PadTo512(long size) { var zeros = (int)(size % 512); diff --git a/src/SharpCompress/Common/Volume.Async.cs b/src/SharpCompress/Common/Volume.Async.cs new file mode 100644 index 000000000..7b37be714 --- /dev/null +++ b/src/SharpCompress/Common/Volume.Async.cs @@ -0,0 +1,18 @@ +using System; +using System.Threading.Tasks; + +namespace SharpCompress.Common; + +public abstract partial class Volume +{ + public virtual async ValueTask DisposeAsync() + { +#if LEGACY_DOTNET + _actualStream.Dispose(); + await Task.CompletedTask; +#else + await _actualStream.DisposeAsync().ConfigureAwait(false); +#endif + GC.SuppressFinalize(this); + } +} diff --git a/src/SharpCompress/Common/Volume.cs b/src/SharpCompress/Common/Volume.cs index 54dc49953..db5458650 100644 --- a/src/SharpCompress/Common/Volume.cs +++ b/src/SharpCompress/Common/Volume.cs @@ -1,11 +1,12 @@ using System; using System.IO; +using System.Threading.Tasks; using SharpCompress.IO; using SharpCompress.Readers; namespace SharpCompress.Common; -public abstract class Volume : IVolume +public abstract partial class Volume : IVolume, IAsyncDisposable { private readonly Stream _baseStream; private readonly Stream _actualStream; @@ -21,7 +22,9 @@ internal Volume(Stream stream, ReaderOptions? readerOptions, int index = 0) } if (stream is IStreamStack ss) + { ss.SetBuffer(ReaderOptions.BufferSize, true); + } _actualStream = stream; } diff --git a/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.Async.cs b/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.Async.cs new file mode 100644 index 000000000..811beeff2 --- /dev/null +++ b/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.Async.cs @@ -0,0 +1,20 @@ +using System.IO; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Zip.Headers; + +internal partial class DirectoryEndHeader +{ + internal override async ValueTask Read(AsyncBinaryReader reader) + { + VolumeNumber = await reader.ReadUInt16Async(); + FirstVolumeWithDirectory = await reader.ReadUInt16Async(); + TotalNumberOfEntriesInDisk = await reader.ReadUInt16Async(); + TotalNumberOfEntries = await reader.ReadUInt16Async(); + DirectorySize = await reader.ReadUInt32Async(); + DirectoryStartOffsetRelativeToDisk = await reader.ReadUInt32Async(); + CommentLength = await reader.ReadUInt16Async(); + Comment = new byte[CommentLength]; + await reader.ReadBytesAsync(Comment, 0, CommentLength); + } +} diff --git a/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.cs b/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.cs index 068358cfb..71da83af8 100644 --- a/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.cs +++ b/src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.cs @@ -1,9 +1,8 @@ using System.IO; -using System.Threading.Tasks; namespace SharpCompress.Common.Zip.Headers; -internal class DirectoryEndHeader : ZipHeader +internal partial class DirectoryEndHeader : ZipHeader { public DirectoryEndHeader() : base(ZipHeaderType.DirectoryEnd) { } @@ -20,19 +19,6 @@ internal override void Read(BinaryReader reader) Comment = reader.ReadBytes(CommentLength); } - internal override async ValueTask Read(AsyncBinaryReader reader) - { - VolumeNumber = await reader.ReadUInt16Async(); - FirstVolumeWithDirectory = await reader.ReadUInt16Async(); - TotalNumberOfEntriesInDisk = await reader.ReadUInt16Async(); - TotalNumberOfEntries = await reader.ReadUInt16Async(); - DirectorySize = await reader.ReadUInt32Async(); - DirectoryStartOffsetRelativeToDisk = await reader.ReadUInt32Async(); - CommentLength = await reader.ReadUInt16Async(); - Comment = new byte[CommentLength]; - await reader.ReadBytesAsync(Comment, 0, CommentLength); - } - public ushort VolumeNumber { get; private set; } public ushort FirstVolumeWithDirectory { get; private set; } diff --git a/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.Async.cs b/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.Async.cs new file mode 100644 index 000000000..e723f1e50 --- /dev/null +++ b/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.Async.cs @@ -0,0 +1,37 @@ +using System.IO; +using System.Linq; +using System.Threading.Tasks; +using SharpCompress.Common; + +namespace SharpCompress.Common.Zip.Headers; + +internal partial class DirectoryEntryHeader +{ + internal override async ValueTask Read(AsyncBinaryReader reader) + { + Version = await reader.ReadUInt16Async(); + VersionNeededToExtract = await reader.ReadUInt16Async(); + Flags = (HeaderFlags)await reader.ReadUInt16Async(); + CompressionMethod = (ZipCompressionMethod)await reader.ReadUInt16Async(); + OriginalLastModifiedTime = LastModifiedTime = await reader.ReadUInt16Async(); + OriginalLastModifiedDate = LastModifiedDate = await reader.ReadUInt16Async(); + Crc = await reader.ReadUInt32Async(); + CompressedSize = await reader.ReadUInt32Async(); + UncompressedSize = await reader.ReadUInt32Async(); + var nameLength = await reader.ReadUInt16Async(); + var extraLength = await reader.ReadUInt16Async(); + var commentLength = await reader.ReadUInt16Async(); + DiskNumberStart = await reader.ReadUInt16Async(); + InternalFileAttributes = await reader.ReadUInt16Async(); + ExternalFileAttributes = await reader.ReadUInt32Async(); + RelativeOffsetOfEntryHeader = await reader.ReadUInt32Async(); + var name = new byte[nameLength]; + var extra = new byte[extraLength]; + var comment = new byte[commentLength]; + await reader.ReadBytesAsync(name, 0, nameLength); + await reader.ReadBytesAsync(extra, 0, extraLength); + await reader.ReadBytesAsync(comment, 0, commentLength); + + ProcessReadData(name, extra, comment); + } +} diff --git a/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.cs b/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.cs index b19aeea5c..e4e0f3313 100644 --- a/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.cs +++ b/src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.cs @@ -1,10 +1,9 @@ using System.IO; using System.Linq; -using System.Threading.Tasks; namespace SharpCompress.Common.Zip.Headers; -internal class DirectoryEntryHeader : ZipFileEntry +internal partial class DirectoryEntryHeader : ZipFileEntry { public DirectoryEntryHeader(IArchiveEncoding archiveEncoding) : base(ZipHeaderType.DirectoryEntry, archiveEncoding) { } @@ -35,34 +34,6 @@ internal override void Read(BinaryReader reader) ProcessReadData(name, extra, comment); } - internal override async ValueTask Read(AsyncBinaryReader reader) - { - Version = await reader.ReadUInt16Async(); - VersionNeededToExtract = await reader.ReadUInt16Async(); - Flags = (HeaderFlags)await reader.ReadUInt16Async(); - CompressionMethod = (ZipCompressionMethod)await reader.ReadUInt16Async(); - OriginalLastModifiedTime = LastModifiedTime = await reader.ReadUInt16Async(); - OriginalLastModifiedDate = LastModifiedDate = await reader.ReadUInt16Async(); - Crc = await reader.ReadUInt32Async(); - CompressedSize = await reader.ReadUInt32Async(); - UncompressedSize = await reader.ReadUInt32Async(); - var nameLength = await reader.ReadUInt16Async(); - var extraLength = await reader.ReadUInt16Async(); - var commentLength = await reader.ReadUInt16Async(); - DiskNumberStart = await reader.ReadUInt16Async(); - InternalFileAttributes = await reader.ReadUInt16Async(); - ExternalFileAttributes = await reader.ReadUInt32Async(); - RelativeOffsetOfEntryHeader = await reader.ReadUInt32Async(); - var name = new byte[nameLength]; - var extra = new byte[extraLength]; - var comment = new byte[commentLength]; - await reader.ReadBytesAsync(name, 0, nameLength); - await reader.ReadBytesAsync(extra, 0, extraLength); - await reader.ReadBytesAsync(comment, 0, commentLength); - - ProcessReadData(name, extra, comment); - } - private void ProcessReadData(byte[] name, byte[] extra, byte[] comment) { // diff --git a/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.Async.cs b/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.Async.cs new file mode 100644 index 000000000..3a7426a10 --- /dev/null +++ b/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.Async.cs @@ -0,0 +1,28 @@ +using System.IO; +using System.Linq; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Zip.Headers; + +internal partial class LocalEntryHeader +{ + internal override async ValueTask Read(AsyncBinaryReader reader) + { + Version = await reader.ReadUInt16Async(); + Flags = (HeaderFlags)await reader.ReadUInt16Async(); + CompressionMethod = (ZipCompressionMethod)await reader.ReadUInt16Async(); + OriginalLastModifiedTime = LastModifiedTime = await reader.ReadUInt16Async(); + OriginalLastModifiedDate = LastModifiedDate = await reader.ReadUInt16Async(); + Crc = await reader.ReadUInt32Async(); + CompressedSize = await reader.ReadUInt32Async(); + UncompressedSize = await reader.ReadUInt32Async(); + var nameLength = await reader.ReadUInt16Async(); + var extraLength = await reader.ReadUInt16Async(); + var name = new byte[nameLength]; + var extra = new byte[extraLength]; + await reader.ReadBytesAsync(name, 0, nameLength); + await reader.ReadBytesAsync(extra, 0, extraLength); + + ProcessReadData(name, extra); + } +} diff --git a/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs b/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs index d676dde0a..d94901373 100644 --- a/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs +++ b/src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs @@ -1,12 +1,13 @@ using System.IO; using System.Linq; -using System.Threading.Tasks; namespace SharpCompress.Common.Zip.Headers; -internal class LocalEntryHeader(IArchiveEncoding archiveEncoding) - : ZipFileEntry(ZipHeaderType.LocalEntry, archiveEncoding) +internal partial class LocalEntryHeader : ZipFileEntry { + public LocalEntryHeader(IArchiveEncoding archiveEncoding) + : base(ZipHeaderType.LocalEntry, archiveEncoding) { } + internal override void Read(BinaryReader reader) { Version = reader.ReadUInt16(); @@ -25,26 +26,6 @@ internal override void Read(BinaryReader reader) ProcessReadData(name, extra); } - internal override async ValueTask Read(AsyncBinaryReader reader) - { - Version = await reader.ReadUInt16Async(); - Flags = (HeaderFlags)await reader.ReadUInt16Async(); - CompressionMethod = (ZipCompressionMethod)await reader.ReadUInt16Async(); - OriginalLastModifiedTime = LastModifiedTime = await reader.ReadUInt16Async(); - OriginalLastModifiedDate = LastModifiedDate = await reader.ReadUInt16Async(); - Crc = await reader.ReadUInt32Async(); - CompressedSize = await reader.ReadUInt32Async(); - UncompressedSize = await reader.ReadUInt32Async(); - var nameLength = await reader.ReadUInt16Async(); - var extraLength = await reader.ReadUInt16Async(); - var name = new byte[nameLength]; - var extra = new byte[extraLength]; - await reader.ReadBytesAsync(name, 0, nameLength); - await reader.ReadBytesAsync(extra, 0, extraLength); - - ProcessReadData(name, extra); - } - private void ProcessReadData(byte[] name, byte[] extra) { // diff --git a/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.Async.cs b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.Async.cs new file mode 100644 index 000000000..386db4159 --- /dev/null +++ b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.Async.cs @@ -0,0 +1,25 @@ +using System.IO; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Zip.Headers; + +internal partial class Zip64DirectoryEndHeader +{ + internal override async ValueTask Read(AsyncBinaryReader reader) + { + SizeOfDirectoryEndRecord = (long)await reader.ReadUInt64Async(); + VersionMadeBy = await reader.ReadUInt16Async(); + VersionNeededToExtract = await reader.ReadUInt16Async(); + VolumeNumber = await reader.ReadUInt32Async(); + FirstVolumeWithDirectory = await reader.ReadUInt32Async(); + TotalNumberOfEntriesInDisk = (long)await reader.ReadUInt64Async(); + TotalNumberOfEntries = (long)await reader.ReadUInt64Async(); + DirectorySize = (long)await reader.ReadUInt64Async(); + DirectoryStartOffsetRelativeToDisk = (long)await reader.ReadUInt64Async(); + var size = (int)( + SizeOfDirectoryEndRecord - SIZE_OF_FIXED_HEADER_DATA_EXCEPT_SIGNATURE_AND_SIZE_FIELDS + ); + DataSector = new byte[size]; + await reader.ReadBytesAsync(DataSector, 0, size); + } +} diff --git a/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.cs b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.cs index cdd412b2c..3933b2e0c 100644 --- a/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.cs +++ b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.cs @@ -1,9 +1,8 @@ using System.IO; -using System.Threading.Tasks; namespace SharpCompress.Common.Zip.Headers; -internal class Zip64DirectoryEndHeader : ZipHeader +internal partial class Zip64DirectoryEndHeader : ZipHeader { public Zip64DirectoryEndHeader() : base(ZipHeaderType.Zip64DirectoryEnd) { } @@ -27,24 +26,6 @@ internal override void Read(BinaryReader reader) ); } - internal override async ValueTask Read(AsyncBinaryReader reader) - { - SizeOfDirectoryEndRecord = (long)await reader.ReadUInt64Async(); - VersionMadeBy = await reader.ReadUInt16Async(); - VersionNeededToExtract = await reader.ReadUInt16Async(); - VolumeNumber = await reader.ReadUInt32Async(); - FirstVolumeWithDirectory = await reader.ReadUInt32Async(); - TotalNumberOfEntriesInDisk = (long)await reader.ReadUInt64Async(); - TotalNumberOfEntries = (long)await reader.ReadUInt64Async(); - DirectorySize = (long)await reader.ReadUInt64Async(); - DirectoryStartOffsetRelativeToDisk = (long)await reader.ReadUInt64Async(); - var size = (int)( - SizeOfDirectoryEndRecord - SIZE_OF_FIXED_HEADER_DATA_EXCEPT_SIGNATURE_AND_SIZE_FIELDS - ); - DataSector = new byte[size]; - await reader.ReadBytesAsync(DataSector, 0, size); - } - private const int SIZE_OF_FIXED_HEADER_DATA_EXCEPT_SIGNATURE_AND_SIZE_FIELDS = 44; public long SizeOfDirectoryEndRecord { get; private set; } diff --git a/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.Async.cs b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.Async.cs new file mode 100644 index 000000000..804f05daf --- /dev/null +++ b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.Async.cs @@ -0,0 +1,14 @@ +using System.IO; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Zip.Headers; + +internal partial class Zip64DirectoryEndLocatorHeader +{ + internal override async ValueTask Read(AsyncBinaryReader reader) + { + FirstVolumeWithDirectory = await reader.ReadUInt32Async(); + RelativeOffsetOfTheEndOfDirectoryRecord = (long)await reader.ReadUInt64Async(); + TotalNumberOfVolumes = await reader.ReadUInt32Async(); + } +} diff --git a/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.cs b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.cs index 8326be99a..3477c804f 100644 --- a/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.cs +++ b/src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.cs @@ -1,9 +1,9 @@ using System.IO; -using System.Threading.Tasks; namespace SharpCompress.Common.Zip.Headers; -internal class Zip64DirectoryEndLocatorHeader() : ZipHeader(ZipHeaderType.Zip64DirectoryEndLocator) +internal partial class Zip64DirectoryEndLocatorHeader() + : ZipHeader(ZipHeaderType.Zip64DirectoryEndLocator) { internal override void Read(BinaryReader reader) { @@ -12,13 +12,6 @@ internal override void Read(BinaryReader reader) TotalNumberOfVolumes = reader.ReadUInt32(); } - internal override async ValueTask Read(AsyncBinaryReader reader) - { - FirstVolumeWithDirectory = await reader.ReadUInt32Async(); - RelativeOffsetOfTheEndOfDirectoryRecord = (long)await reader.ReadUInt64Async(); - TotalNumberOfVolumes = await reader.ReadUInt32Async(); - } - public uint FirstVolumeWithDirectory { get; private set; } public long RelativeOffsetOfTheEndOfDirectoryRecord { get; private set; } diff --git a/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.Async.cs b/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.Async.cs new file mode 100644 index 000000000..5cc805b7b --- /dev/null +++ b/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.Async.cs @@ -0,0 +1,27 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Common.Zip.Headers; + +internal abstract partial class ZipFileEntry +{ + internal async ValueTask ComposeEncryptionDataAsync( + Stream archiveStream, + CancellationToken cancellationToken = default + ) + { + if (archiveStream is null) + { + throw new ArgumentNullException(nameof(archiveStream)); + } + + var buffer = new byte[12]; + await archiveStream.ReadFullyAsync(buffer, 0, 12, cancellationToken).ConfigureAwait(false); + + var encryptionData = PkwareTraditionalEncryptionData.ForRead(Password!, this, buffer); + + return encryptionData; + } +} diff --git a/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.cs b/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.cs index edcb29767..c5bf85e65 100644 --- a/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.cs +++ b/src/SharpCompress/Common/Zip/Headers/ZipFileEntry.cs @@ -2,12 +2,10 @@ using System.Buffers.Binary; using System.Collections.Generic; using System.IO; -using System.Threading; -using System.Threading.Tasks; namespace SharpCompress.Common.Zip.Headers; -internal abstract class ZipFileEntry(ZipHeaderType type, IArchiveEncoding archiveEncoding) +internal abstract partial class ZipFileEntry(ZipHeaderType type, IArchiveEncoding archiveEncoding) : ZipHeader(type) { internal bool IsDirectory @@ -59,24 +57,6 @@ internal PkwareTraditionalEncryptionData ComposeEncryptionData(Stream archiveStr return encryptionData; } - internal async ValueTask ComposeEncryptionDataAsync( - Stream archiveStream, - CancellationToken cancellationToken = default - ) - { - if (archiveStream is null) - { - throw new ArgumentNullException(nameof(archiveStream)); - } - - var buffer = new byte[12]; - await archiveStream.ReadFullyAsync(buffer, 0, 12, cancellationToken).ConfigureAwait(false); - - var encryptionData = PkwareTraditionalEncryptionData.ForRead(Password!, this, buffer); - - return encryptionData; - } - internal WinzipAesEncryptionData? WinzipAesEncryptionData { get; set; } /// @@ -137,7 +117,7 @@ protected void LoadExtra(byte[] extra) if (i + 4 + length > extra.Length) { // incomplete or corrupt field - break; // allow processing optional other blocks + break; // allow processing other blocks } var data = new byte[length]; diff --git a/src/SharpCompress/Common/Zip/SeekableZipFilePart.Async.cs b/src/SharpCompress/Common/Zip/SeekableZipFilePart.Async.cs new file mode 100644 index 000000000..92a8f7b3b --- /dev/null +++ b/src/SharpCompress/Common/Zip/SeekableZipFilePart.Async.cs @@ -0,0 +1,24 @@ +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Zip.Headers; + +namespace SharpCompress.Common.Zip; + +internal partial class SeekableZipFilePart +{ + internal override async ValueTask GetCompressedStreamAsync( + CancellationToken cancellationToken = default + ) + { + if (!_isLocalHeaderLoaded) + { + await LoadLocalHeaderAsync(cancellationToken); + _isLocalHeaderLoaded = true; + } + return await base.GetCompressedStreamAsync(cancellationToken); + } + + private async ValueTask LoadLocalHeaderAsync(CancellationToken cancellationToken = default) => + Header = await _headerFactory.GetLocalHeaderAsync(BaseStream, (DirectoryEntryHeader)Header); +} diff --git a/src/SharpCompress/Common/Zip/SeekableZipFilePart.cs b/src/SharpCompress/Common/Zip/SeekableZipFilePart.cs index 7dbf93baa..9e2e06b07 100644 --- a/src/SharpCompress/Common/Zip/SeekableZipFilePart.cs +++ b/src/SharpCompress/Common/Zip/SeekableZipFilePart.cs @@ -1,11 +1,9 @@ using System.IO; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common.Zip.Headers; namespace SharpCompress.Common.Zip; -internal class SeekableZipFilePart : ZipFilePart +internal partial class SeekableZipFilePart : ZipFilePart { private bool _isLocalHeaderLoaded; private readonly SeekableZipHeaderFactory _headerFactory; @@ -27,24 +25,9 @@ internal override Stream GetCompressedStream() return base.GetCompressedStream(); } - internal override async ValueTask GetCompressedStreamAsync( - CancellationToken cancellationToken = default - ) - { - if (!_isLocalHeaderLoaded) - { - await LoadLocalHeaderAsync(cancellationToken); - _isLocalHeaderLoaded = true; - } - return await base.GetCompressedStreamAsync(cancellationToken); - } - private void LoadLocalHeader() => Header = _headerFactory.GetLocalHeader(BaseStream, (DirectoryEntryHeader)Header); - private async ValueTask LoadLocalHeaderAsync(CancellationToken cancellationToken = default) => - Header = await _headerFactory.GetLocalHeaderAsync(BaseStream, (DirectoryEntryHeader)Header); - protected override Stream CreateBaseStream() { BaseStream.Position = Header.DataStartPosition.NotNull(); diff --git a/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.Async.cs b/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.Async.cs new file mode 100644 index 000000000..4eaf7c1f9 --- /dev/null +++ b/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.Async.cs @@ -0,0 +1,150 @@ +using System; +using System.Buffers; +using System.Collections.Generic; +using System.IO; +using System.Threading.Tasks; +using SharpCompress.Common.Zip.Headers; + +namespace SharpCompress.Common.Zip; + +internal sealed partial class SeekableZipHeaderFactory +{ + internal async IAsyncEnumerable ReadSeekableHeaderAsync(Stream stream) + { + var reader = new AsyncBinaryReader(stream); + + await SeekBackToHeaderAsync(stream, reader); + + var eocd_location = stream.Position; + var entry = new DirectoryEndHeader(); + await entry.Read(reader); + + if (entry.IsZip64) + { + _zip64 = true; + + // ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR should be before the EOCD + stream.Seek(eocd_location - ZIP64_EOCD_LENGTH - 4, SeekOrigin.Begin); + uint zip64_locator = await reader.ReadUInt32Async(); + if (zip64_locator != ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR) + { + throw new ArchiveException("Failed to locate the Zip64 Directory Locator"); + } + + var zip64Locator = new Zip64DirectoryEndLocatorHeader(); + await zip64Locator.Read(reader); + + stream.Seek(zip64Locator.RelativeOffsetOfTheEndOfDirectoryRecord, SeekOrigin.Begin); + var zip64Signature = await reader.ReadUInt32Async(); + if (zip64Signature != ZIP64_END_OF_CENTRAL_DIRECTORY) + { + throw new ArchiveException("Failed to locate the Zip64 Header"); + } + + var zip64Entry = new Zip64DirectoryEndHeader(); + await zip64Entry.Read(reader); + stream.Seek(zip64Entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin); + } + else + { + stream.Seek(entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin); + } + + var position = stream.Position; + while (true) + { + stream.Position = position; + var signature = await reader.ReadUInt32Async(); + var nextHeader = await ReadHeader(signature, reader, _zip64); + position = stream.Position; + + if (nextHeader is null) + { + yield break; + } + + if (nextHeader is DirectoryEntryHeader entryHeader) + { + //entry could be zero bytes so we need to know that. + entryHeader.HasData = entryHeader.CompressedSize != 0; + yield return entryHeader; + } + else if (nextHeader is DirectoryEndHeader endHeader) + { + yield return endHeader; + } + } + } + + private static async ValueTask SeekBackToHeaderAsync(Stream stream, AsyncBinaryReader reader) + { + // Minimum EOCD length + if (stream.Length < MINIMUM_EOCD_LENGTH) + { + throw new ArchiveException( + "Could not find Zip file Directory at the end of the file. File may be corrupted." + ); + } + + var len = + stream.Length < MAX_SEARCH_LENGTH_FOR_EOCD + ? (int)stream.Length + : MAX_SEARCH_LENGTH_FOR_EOCD; + + stream.Seek(-len, SeekOrigin.End); + var seek = ArrayPool.Shared.Rent(len); + + try + { + await reader.ReadBytesAsync(seek, 0, len, default); + var memory = new Memory(seek, 0, len); + var span = memory.Span; + span.Reverse(); + + // don't exclude the minimum eocd region, otherwise you fail to locate the header in empty zip files + var max_search_area = len; // - MINIMUM_EOCD_LENGTH; + + for (var pos_from_end = 0; pos_from_end < max_search_area; ++pos_from_end) + { + if (IsMatch(span, pos_from_end, needle)) + { + stream.Seek(-pos_from_end, SeekOrigin.End); + return; + } + } + + throw new ArchiveException("Failed to locate the Zip Header"); + } + finally + { + ArrayPool.Shared.Return(seek); + } + } + + internal async ValueTask GetLocalHeaderAsync( + Stream stream, + DirectoryEntryHeader directoryEntryHeader + ) + { + stream.Seek(directoryEntryHeader.RelativeOffsetOfEntryHeader, SeekOrigin.Begin); + var reader = new AsyncBinaryReader(stream); + var signature = await reader.ReadUInt32Async(); + if (await ReadHeader(signature, reader, _zip64) is not LocalEntryHeader localEntryHeader) + { + throw new InvalidOperationException(); + } + + // populate fields only known from the DirectoryEntryHeader + localEntryHeader.HasData = directoryEntryHeader.HasData; + localEntryHeader.ExternalFileAttributes = directoryEntryHeader.ExternalFileAttributes; + localEntryHeader.Comment = directoryEntryHeader.Comment; + + if (FlagUtility.HasFlag(localEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor)) + { + localEntryHeader.Crc = directoryEntryHeader.Crc; + localEntryHeader.CompressedSize = directoryEntryHeader.CompressedSize; + localEntryHeader.UncompressedSize = directoryEntryHeader.UncompressedSize; + } + return localEntryHeader; + } +} diff --git a/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.cs b/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.cs index 971ffa3c8..ccbf2082e 100644 --- a/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.cs +++ b/src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Common.Zip; -internal sealed class SeekableZipHeaderFactory : ZipHeaderFactory +internal sealed partial class SeekableZipHeaderFactory : ZipHeaderFactory { private const int MINIMUM_EOCD_LENGTH = 22; private const int ZIP64_EOCD_LENGTH = 20; @@ -22,74 +22,7 @@ internal sealed class SeekableZipHeaderFactory : ZipHeaderFactory internal SeekableZipHeaderFactory(string? password, IArchiveEncoding archiveEncoding) : base(StreamingMode.Seekable, password, archiveEncoding) { } - internal async IAsyncEnumerable ReadSeekableHeaderAsync(Stream stream) - { - var reader = new AsyncBinaryReader(stream); - - await SeekBackToHeaderAsync(stream, reader); - - var eocd_location = stream.Position; - var entry = new DirectoryEndHeader(); - await entry.Read(reader); - - if (entry.IsZip64) - { - _zip64 = true; - - // ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR should be before the EOCD - stream.Seek(eocd_location - ZIP64_EOCD_LENGTH - 4, SeekOrigin.Begin); - uint zip64_locator = await reader.ReadUInt32Async(); - if (zip64_locator != ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR) - { - throw new ArchiveException("Failed to locate the Zip64 Directory Locator"); - } - - var zip64Locator = new Zip64DirectoryEndLocatorHeader(); - await zip64Locator.Read(reader); - - stream.Seek(zip64Locator.RelativeOffsetOfTheEndOfDirectoryRecord, SeekOrigin.Begin); - var zip64Signature = await reader.ReadUInt32Async(); - if (zip64Signature != ZIP64_END_OF_CENTRAL_DIRECTORY) - { - throw new ArchiveException("Failed to locate the Zip64 Header"); - } - - var zip64Entry = new Zip64DirectoryEndHeader(); - await zip64Entry.Read(reader); - stream.Seek(zip64Entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin); - } - else - { - stream.Seek(entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin); - } - - var position = stream.Position; - while (true) - { - stream.Position = position; - var signature = await reader.ReadUInt32Async(); - var nextHeader = await ReadHeader(signature, reader, _zip64); - position = stream.Position; - - if (nextHeader is null) - { - yield break; - } - - if (nextHeader is DirectoryEntryHeader entryHeader) - { - //entry could be zero bytes so we need to know that. - entryHeader.HasData = entryHeader.CompressedSize != 0; - yield return entryHeader; - } - else if (nextHeader is DirectoryEndHeader endHeader) - { - yield return endHeader; - } - } - } - - internal IEnumerable ReadSeekableHeader(Stream stream, bool useSync) + internal IEnumerable ReadSeekableHeader(Stream stream) { var reader = new BinaryReader(stream); @@ -169,51 +102,6 @@ private static bool IsMatch(Span haystack, int position, byte[] needle) return true; } - private static async ValueTask SeekBackToHeaderAsync(Stream stream, AsyncBinaryReader reader) - { - // Minimum EOCD length - if (stream.Length < MINIMUM_EOCD_LENGTH) - { - throw new ArchiveException( - "Could not find Zip file Directory at the end of the file. File may be corrupted." - ); - } - - var len = - stream.Length < MAX_SEARCH_LENGTH_FOR_EOCD - ? (int)stream.Length - : MAX_SEARCH_LENGTH_FOR_EOCD; - - stream.Seek(-len, SeekOrigin.End); - var seek = ArrayPool.Shared.Rent(len); - - try - { - await reader.ReadBytesAsync(seek, 0, len, default); - var memory = new Memory(seek, 0, len); - var span = memory.Span; - span.Reverse(); - - // don't exclude the minimum eocd region, otherwise you fail to locate the header in empty zip files - var max_search_area = len; // - MINIMUM_EOCD_LENGTH; - - for (var pos_from_end = 0; pos_from_end < max_search_area; ++pos_from_end) - { - if (IsMatch(span, pos_from_end, needle)) - { - stream.Seek(-pos_from_end, SeekOrigin.End); - return; - } - } - - throw new ArchiveException("Failed to locate the Zip Header"); - } - finally - { - ArrayPool.Shared.Return(seek); - } - } - private static void SeekBackToHeader(Stream stream, BinaryReader reader) { // Minimum EOCD length @@ -276,31 +164,4 @@ DirectoryEntryHeader directoryEntryHeader } return localEntryHeader; } - - internal async ValueTask GetLocalHeaderAsync( - Stream stream, - DirectoryEntryHeader directoryEntryHeader - ) - { - stream.Seek(directoryEntryHeader.RelativeOffsetOfEntryHeader, SeekOrigin.Begin); - var reader = new AsyncBinaryReader(stream); - var signature = await reader.ReadUInt32Async(); - if (await ReadHeader(signature, reader, _zip64) is not LocalEntryHeader localEntryHeader) - { - throw new InvalidOperationException(); - } - - // populate fields only known from the DirectoryEntryHeader - localEntryHeader.HasData = directoryEntryHeader.HasData; - localEntryHeader.ExternalFileAttributes = directoryEntryHeader.ExternalFileAttributes; - localEntryHeader.Comment = directoryEntryHeader.Comment; - - if (FlagUtility.HasFlag(localEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor)) - { - localEntryHeader.Crc = directoryEntryHeader.Crc; - localEntryHeader.CompressedSize = directoryEntryHeader.CompressedSize; - localEntryHeader.UncompressedSize = directoryEntryHeader.UncompressedSize; - } - return localEntryHeader; - } } diff --git a/src/SharpCompress/Common/Zip/StreamingZipFilePart.Async.cs b/src/SharpCompress/Common/Zip/StreamingZipFilePart.Async.cs new file mode 100644 index 000000000..55910668e --- /dev/null +++ b/src/SharpCompress/Common/Zip/StreamingZipFilePart.Async.cs @@ -0,0 +1,31 @@ +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Common.Zip; + +internal sealed partial class StreamingZipFilePart +{ + internal override async ValueTask GetCompressedStreamAsync( + CancellationToken cancellationToken = default + ) + { + if (!Header.HasData) + { + return Stream.Null; + } + _decompressionStream = await CreateDecompressionStreamAsync( + await GetCryptoStreamAsync(CreateBaseStream(), cancellationToken) + .ConfigureAwait(false), + Header.CompressionMethod, + cancellationToken + ) + .ConfigureAwait(false); + if (LeaveStreamOpen) + { + return SharpCompressStream.Create(_decompressionStream, leaveOpen: true); + } + return _decompressionStream; + } +} diff --git a/src/SharpCompress/Common/Zip/StreamingZipFilePart.cs b/src/SharpCompress/Common/Zip/StreamingZipFilePart.cs index 312ea1263..c95fad9f6 100644 --- a/src/SharpCompress/Common/Zip/StreamingZipFilePart.cs +++ b/src/SharpCompress/Common/Zip/StreamingZipFilePart.cs @@ -1,13 +1,11 @@ using System.IO; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common.Zip.Headers; using SharpCompress.Compressors.Deflate; using SharpCompress.IO; namespace SharpCompress.Common.Zip; -internal sealed class StreamingZipFilePart : ZipFilePart +internal sealed partial class StreamingZipFilePart : ZipFilePart { private Stream? _decompressionStream; @@ -33,28 +31,6 @@ internal override Stream GetCompressedStream() return _decompressionStream; } - internal override async ValueTask GetCompressedStreamAsync( - CancellationToken cancellationToken = default - ) - { - if (!Header.HasData) - { - return Stream.Null; - } - _decompressionStream = await CreateDecompressionStreamAsync( - await GetCryptoStreamAsync(CreateBaseStream(), cancellationToken) - .ConfigureAwait(false), - Header.CompressionMethod, - cancellationToken - ) - .ConfigureAwait(false); - if (LeaveStreamOpen) - { - return SharpCompressStream.Create(_decompressionStream, leaveOpen: true); - } - return _decompressionStream; - } - internal BinaryReader FixStreamedFileLocation(ref SharpCompressStream rewindableStream) { if (Header.IsDirectory) diff --git a/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.Async.cs b/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.Async.cs new file mode 100644 index 000000000..df0378d95 --- /dev/null +++ b/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.Async.cs @@ -0,0 +1,341 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Zip.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Common.Zip; + +internal sealed partial class StreamingZipHeaderFactory +{ + /// + /// Reads ZIP headers asynchronously for streams that do not support synchronous reads. + /// + internal IAsyncEnumerable ReadStreamHeaderAsync(Stream stream) => + new StreamHeaderAsyncEnumerable(this, stream); + + /// + /// Invokes the shared async header parsing logic on the base factory. + /// + private ValueTask ReadHeaderAsyncInternal( + uint headerBytes, + AsyncBinaryReader reader + ) => ReadHeader(headerBytes, reader); + + /// + /// Exposes the last parsed local entry header to the async enumerator so it can handle streaming data descriptors. + /// + private LocalEntryHeader? LastEntryHeader + { + get => _lastEntryHeader; + set => _lastEntryHeader = value; + } + + /// + /// Produces an async enumerator for streaming ZIP headers. + /// + private sealed class StreamHeaderAsyncEnumerable : IAsyncEnumerable + { + private readonly StreamingZipHeaderFactory _headerFactory; + private readonly Stream _stream; + + public StreamHeaderAsyncEnumerable(StreamingZipHeaderFactory headerFactory, Stream stream) + { + _headerFactory = headerFactory; + _stream = stream; + } + + public IAsyncEnumerator GetAsyncEnumerator( + CancellationToken cancellationToken = default + ) => new StreamHeaderAsyncEnumerator(_headerFactory, _stream, cancellationToken); + } + + /// + /// Async implementation of reading stream headers using to avoid sync reads. + /// + private sealed class StreamHeaderAsyncEnumerator : IAsyncEnumerator, IDisposable + { + private readonly StreamingZipHeaderFactory _headerFactory; + private readonly SharpCompressStream _rewindableStream; + private readonly AsyncBinaryReader _reader; + private readonly CancellationToken _cancellationToken; + private bool _completed; + + public StreamHeaderAsyncEnumerator( + StreamingZipHeaderFactory headerFactory, + Stream stream, + CancellationToken cancellationToken + ) + { + _headerFactory = headerFactory; + _rewindableStream = EnsureSharpCompressStream(stream); + _reader = new AsyncBinaryReader(_rewindableStream, leaveOpen: true); + _cancellationToken = cancellationToken; + } + + private ZipHeader? _current; + + public ZipHeader Current => + _current ?? throw new InvalidOperationException("No current header is available."); + + /// + /// Advances to the next ZIP header in the stream, honoring streaming data descriptors where applicable. + /// + public async ValueTask MoveNextAsync() + { + if (_completed) + { + return false; + } + + while (true) + { + _cancellationToken.ThrowIfCancellationRequested(); + + uint headerBytes; + var lastEntryHeader = _headerFactory.LastEntryHeader; + if ( + lastEntryHeader != null + && FlagUtility.HasFlag(lastEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor) + ) + { + if (lastEntryHeader.Part is null) + { + continue; + } + + var pos = _rewindableStream.CanSeek ? (long?)_rewindableStream.Position : null; + + var crc = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + if (crc == POST_DATA_DESCRIPTOR) + { + crc = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + } + lastEntryHeader.Crc = crc; + + //attempt 32bit read + ulong compressedSize = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + ulong uncompressedSize = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + headerBytes = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + + //check for zip64 sentinel or unexpected header + bool isSentinel = + compressedSize == 0xFFFFFFFF || uncompressedSize == 0xFFFFFFFF; + bool isHeader = headerBytes == 0x04034b50 || headerBytes == 0x02014b50; + + if (!isHeader && !isSentinel) + { + //reshuffle into 64-bit values + compressedSize = (uncompressedSize << 32) | compressedSize; + uncompressedSize = + ((ulong)headerBytes << 32) + | await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + headerBytes = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + } + else if (isSentinel) + { + //standards-compliant zip64 descriptor + compressedSize = await _reader + .ReadUInt64Async(_cancellationToken) + .ConfigureAwait(false); + uncompressedSize = await _reader + .ReadUInt64Async(_cancellationToken) + .ConfigureAwait(false); + } + + lastEntryHeader.CompressedSize = (long)compressedSize; + lastEntryHeader.UncompressedSize = (long)uncompressedSize; + + if (pos.HasValue) + { + lastEntryHeader.DataStartPosition = pos - lastEntryHeader.CompressedSize; + } + } + else if (lastEntryHeader != null && lastEntryHeader.IsZip64) + { + if (lastEntryHeader.Part is null) + { + continue; + } + + var pos = _rewindableStream.CanSeek ? (long?)_rewindableStream.Position : null; + + headerBytes = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + + _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // version + _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // flags + _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // compressionMethod + _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // lastModifiedDate + _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // lastModifiedTime + + var crc = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + + if (crc == POST_DATA_DESCRIPTOR) + { + crc = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + } + lastEntryHeader.Crc = crc; + + // The DataDescriptor can be either 64bit or 32bit + var compressedSize = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + var uncompressedSize = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + + // Check if we have header or 64bit DataDescriptor + var testHeader = !(headerBytes == 0x04034b50 || headerBytes == 0x02014b50); + + var test64Bit = ((long)uncompressedSize << 32) | compressedSize; + if (test64Bit == lastEntryHeader.CompressedSize && testHeader) + { + lastEntryHeader.UncompressedSize = + ( + (long) + await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false) << 32 + ) | headerBytes; + headerBytes = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + } + else + { + lastEntryHeader.UncompressedSize = uncompressedSize; + } + + if (pos.HasValue) + { + lastEntryHeader.DataStartPosition = pos - lastEntryHeader.CompressedSize; + + // 4 = First 4 bytes of the entry header (i.e. 50 4B 03 04) + _rewindableStream.Position = pos.Value + 4; + } + } + else + { + headerBytes = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + } + + _headerFactory.LastEntryHeader = null; + var header = await _headerFactory + .ReadHeaderAsyncInternal(headerBytes, _reader) + .ConfigureAwait(false); + if (header is null) + { + _completed = true; + return false; + } + + //entry could be zero bytes so we need to know that. + if (header.ZipHeaderType == ZipHeaderType.LocalEntry) + { + var localHeader = (LocalEntryHeader)header; + var directoryHeader = _headerFactory._entries?.FirstOrDefault(entry => + entry.Key == localHeader.Name + && localHeader.CompressedSize == 0 + && localHeader.UncompressedSize == 0 + && localHeader.Crc == 0 + && localHeader.IsDirectory == false + ); + + if (directoryHeader != null) + { + localHeader.UncompressedSize = directoryHeader.Size; + localHeader.CompressedSize = directoryHeader.CompressedSize; + localHeader.Crc = (uint)directoryHeader.Crc; + } + + // If we have CompressedSize, there is data to be read + if (localHeader.CompressedSize > 0) + { + header.HasData = true; + } // Check if zip is streaming ( Length is 0 and is declared in PostDataDescriptor ) + else if (localHeader.Flags.HasFlag(HeaderFlags.UsePostDataDescriptor)) + { + var nextHeaderBytes = await _reader + .ReadUInt32Async(_cancellationToken) + .ConfigureAwait(false); + ((IStreamStack)_rewindableStream).Rewind(sizeof(uint)); + + // Check if next data is PostDataDescriptor, streamed file with 0 length + header.HasData = !IsHeader(nextHeaderBytes); + } + else // We are not streaming and compressed size is 0, we have no data + { + header.HasData = false; + } + } + + _current = header; + return true; + } + } + + public ValueTask DisposeAsync() + { + Dispose(); + return default; + } + + /// + /// Disposes the underlying reader (without closing the archive stream). + /// + public void Dispose() + { + _reader.Dispose(); + } + + /// + /// Ensures the stream is a so header parsing can use rewind/buffer helpers. + /// + private static SharpCompressStream EnsureSharpCompressStream(Stream stream) + { + if (stream is SharpCompressStream sharpCompressStream) + { + return sharpCompressStream; + } + + // Ensure the stream is already a SharpCompressStream so the buffer/size is set. + // The original code wrapped this with RewindableStream; use SharpCompressStream so we can get the buffer size. + if (stream is SourceStream src) + { + return new SharpCompressStream( + stream, + src.ReaderOptions.LeaveStreamOpen, + bufferSize: src.ReaderOptions.BufferSize + ); + } + + throw new ArgumentException("Stream must be a SharpCompressStream", nameof(stream)); + } + } +} diff --git a/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.cs b/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.cs index 479a5c2a1..0bbbcbccb 100644 --- a/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.cs +++ b/src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.cs @@ -10,7 +10,7 @@ namespace SharpCompress.Common.Zip; -internal class StreamingZipHeaderFactory : ZipHeaderFactory +internal sealed partial class StreamingZipHeaderFactory : ZipHeaderFactory { private IEnumerable? _entries; @@ -100,7 +100,9 @@ internal IEnumerable ReadStreamHeader(Stream stream) else if (_lastEntryHeader != null && _lastEntryHeader.IsZip64) { if (_lastEntryHeader.Part is null) + { continue; + } //reader = ((StreamingZipFilePart)_lastEntryHeader.Part).FixStreamedFileLocation( // ref rewindableStream @@ -204,330 +206,24 @@ internal IEnumerable ReadStreamHeader(Stream stream) } } - /// - /// Reads ZIP headers asynchronously for streams that do not support synchronous reads. - /// - internal IAsyncEnumerable ReadStreamHeaderAsync(Stream stream) => - new StreamHeaderAsyncEnumerable(this, stream); - - /// - /// Invokes the shared async header parsing logic on the base factory. - /// - private ValueTask ReadHeaderAsyncInternal( - uint headerBytes, - AsyncBinaryReader reader - ) => ReadHeader(headerBytes, reader); - - /// - /// Exposes the last parsed local entry header to the async enumerator so it can handle streaming data descriptors. - /// - private LocalEntryHeader? LastEntryHeader + private static SharpCompressStream EnsureSharpCompressStream(Stream stream) { - get => _lastEntryHeader; - set => _lastEntryHeader = value; - } - - /// - /// Produces an async enumerator for streaming ZIP headers. - /// - private sealed class StreamHeaderAsyncEnumerable : IAsyncEnumerable - { - private readonly StreamingZipHeaderFactory _headerFactory; - private readonly Stream _stream; - - public StreamHeaderAsyncEnumerable(StreamingZipHeaderFactory headerFactory, Stream stream) - { - _headerFactory = headerFactory; - _stream = stream; - } - - public IAsyncEnumerator GetAsyncEnumerator( - CancellationToken cancellationToken = default - ) => new StreamHeaderAsyncEnumerator(_headerFactory, _stream, cancellationToken); - } - - /// - /// Async implementation of using to avoid sync reads. - /// - private sealed class StreamHeaderAsyncEnumerator : IAsyncEnumerator, IDisposable - { - private readonly StreamingZipHeaderFactory _headerFactory; - private readonly SharpCompressStream _rewindableStream; - private readonly AsyncBinaryReader _reader; - private readonly CancellationToken _cancellationToken; - private bool _completed; - - public StreamHeaderAsyncEnumerator( - StreamingZipHeaderFactory headerFactory, - Stream stream, - CancellationToken cancellationToken - ) - { - _headerFactory = headerFactory; - _rewindableStream = EnsureSharpCompressStream(stream); - _reader = new AsyncBinaryReader(_rewindableStream, leaveOpen: true); - _cancellationToken = cancellationToken; - } - - private ZipHeader? _current; - - public ZipHeader Current => - _current ?? throw new InvalidOperationException("No current header is available."); - - /// - /// Advances to the next ZIP header in the stream, honoring streaming data descriptors where applicable. - /// - public async ValueTask MoveNextAsync() - { - if (_completed) - { - return false; - } - - while (true) - { - _cancellationToken.ThrowIfCancellationRequested(); - - uint headerBytes; - var lastEntryHeader = _headerFactory.LastEntryHeader; - if ( - lastEntryHeader != null - && FlagUtility.HasFlag(lastEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor) - ) - { - if (lastEntryHeader.Part is null) - { - continue; - } - - var pos = _rewindableStream.CanSeek ? (long?)_rewindableStream.Position : null; - - var crc = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - if (crc == POST_DATA_DESCRIPTOR) - { - crc = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - } - lastEntryHeader.Crc = crc; - - //attempt 32bit read - ulong compressedSize = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - ulong uncompressedSize = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - headerBytes = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - - //check for zip64 sentinel or unexpected header - bool isSentinel = - compressedSize == 0xFFFFFFFF || uncompressedSize == 0xFFFFFFFF; - bool isHeader = headerBytes == 0x04034b50 || headerBytes == 0x02014b50; - - if (!isHeader && !isSentinel) - { - //reshuffle into 64-bit values - compressedSize = (uncompressedSize << 32) | compressedSize; - uncompressedSize = - ((ulong)headerBytes << 32) - | await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - headerBytes = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - } - else if (isSentinel) - { - //standards-compliant zip64 descriptor - compressedSize = await _reader - .ReadUInt64Async(_cancellationToken) - .ConfigureAwait(false); - uncompressedSize = await _reader - .ReadUInt64Async(_cancellationToken) - .ConfigureAwait(false); - } - - lastEntryHeader.CompressedSize = (long)compressedSize; - lastEntryHeader.UncompressedSize = (long)uncompressedSize; - - if (pos.HasValue) - { - lastEntryHeader.DataStartPosition = pos - lastEntryHeader.CompressedSize; - } - } - else if (lastEntryHeader != null && lastEntryHeader.IsZip64) - { - if (lastEntryHeader.Part is null) - { - continue; - } - - var pos = _rewindableStream.CanSeek ? (long?)_rewindableStream.Position : null; - - headerBytes = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - - _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // version - _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // flags - _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // compressionMethod - _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // lastModifiedDate - _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // lastModifiedTime - - var crc = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - - if (crc == POST_DATA_DESCRIPTOR) - { - crc = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - } - lastEntryHeader.Crc = crc; - - // The DataDescriptor can be either 64bit or 32bit - var compressedSize = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - var uncompressedSize = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - - // Check if we have header or 64bit DataDescriptor - var testHeader = !(headerBytes == 0x04034b50 || headerBytes == 0x02014b50); - - var test64Bit = ((long)uncompressedSize << 32) | compressedSize; - if (test64Bit == lastEntryHeader.CompressedSize && testHeader) - { - lastEntryHeader.UncompressedSize = - ( - (long) - await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false) << 32 - ) | headerBytes; - headerBytes = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - } - else - { - lastEntryHeader.UncompressedSize = uncompressedSize; - } - - if (pos.HasValue) - { - lastEntryHeader.DataStartPosition = pos - lastEntryHeader.CompressedSize; - - // 4 = First 4 bytes of the entry header (i.e. 50 4B 03 04) - _rewindableStream.Position = pos.Value + 4; - } - } - else - { - headerBytes = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - } - - _headerFactory.LastEntryHeader = null; - var header = await _headerFactory - .ReadHeaderAsyncInternal(headerBytes, _reader) - .ConfigureAwait(false); - if (header is null) - { - _completed = true; - return false; - } - - //entry could be zero bytes so we need to know that. - if (header.ZipHeaderType == ZipHeaderType.LocalEntry) - { - var localHeader = (LocalEntryHeader)header; - var directoryHeader = _headerFactory._entries?.FirstOrDefault(entry => - entry.Key == localHeader.Name - && localHeader.CompressedSize == 0 - && localHeader.UncompressedSize == 0 - && localHeader.Crc == 0 - && localHeader.IsDirectory == false - ); - - if (directoryHeader != null) - { - localHeader.UncompressedSize = directoryHeader.Size; - localHeader.CompressedSize = directoryHeader.CompressedSize; - localHeader.Crc = (uint)directoryHeader.Crc; - } - - // If we have CompressedSize, there is data to be read - if (localHeader.CompressedSize > 0) - { - header.HasData = true; - } // Check if zip is streaming ( Length is 0 and is declared in PostDataDescriptor ) - else if (localHeader.Flags.HasFlag(HeaderFlags.UsePostDataDescriptor)) - { - var nextHeaderBytes = await _reader - .ReadUInt32Async(_cancellationToken) - .ConfigureAwait(false); - ((IStreamStack)_rewindableStream).Rewind(sizeof(uint)); - - // Check if next data is PostDataDescriptor, streamed file with 0 length - header.HasData = !IsHeader(nextHeaderBytes); - } - else // We are not streaming and compressed size is 0, we have no data - { - header.HasData = false; - } - } - - _current = header; - return true; - } - } - - public ValueTask DisposeAsync() + if (stream is SharpCompressStream sharpCompressStream) { - Dispose(); - return default; + return sharpCompressStream; } - /// - /// Disposes the underlying reader (without closing the archive stream). - /// - public void Dispose() + // Ensure the stream is already a SharpCompressStream so the buffer/size is set. + // The original code wrapped this with RewindableStream; use SharpCompressStream so we can get the buffer size. + if (stream is SourceStream src) { - _reader.Dispose(); + return new SharpCompressStream( + stream, + src.ReaderOptions.LeaveStreamOpen, + bufferSize: src.ReaderOptions.BufferSize + ); } - /// - /// Ensures the stream is a so header parsing can use rewind/buffer helpers. - /// - private static SharpCompressStream EnsureSharpCompressStream(Stream stream) - { - if (stream is SharpCompressStream sharpCompressStream) - { - return sharpCompressStream; - } - - // Ensure the stream is already a SharpCompressStream so the buffer/size is set. - // The original code wrapped this with RewindableStream; use SharpCompressStream so we can get the buffer size. - if (stream is SourceStream src) - { - return new SharpCompressStream( - stream, - src.ReaderOptions.LeaveStreamOpen, - bufferSize: src.ReaderOptions.BufferSize - ); - } - - throw new ArgumentException("Stream must be a SharpCompressStream", nameof(stream)); - } + throw new ArgumentException("Stream must be a SharpCompressStream", nameof(stream)); } } diff --git a/src/SharpCompress/Common/Zip/ZipFilePart.Async.cs b/src/SharpCompress/Common/Zip/ZipFilePart.Async.cs new file mode 100644 index 000000000..76b4f6f5b --- /dev/null +++ b/src/SharpCompress/Common/Zip/ZipFilePart.Async.cs @@ -0,0 +1,270 @@ +using System; +using System.Buffers.Binary; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Zip.Headers; +using SharpCompress.Compressors; +using SharpCompress.Compressors.BZip2; +using SharpCompress.Compressors.Deflate; +using SharpCompress.Compressors.Deflate64; +using SharpCompress.Compressors.Explode; +using SharpCompress.Compressors.LZMA; +using SharpCompress.Compressors.PPMd; +using SharpCompress.Compressors.Reduce; +using SharpCompress.Compressors.Shrink; +using SharpCompress.Compressors.Xz; +using SharpCompress.Compressors.ZStandard; +using SharpCompress.IO; + +namespace SharpCompress.Common.Zip; + +internal abstract partial class ZipFilePart +{ + internal override async ValueTask GetCompressedStreamAsync( + CancellationToken cancellationToken = default + ) + { + if (!Header.HasData) + { + return Stream.Null; + } + var decompressionStream = await CreateDecompressionStreamAsync( + await GetCryptoStreamAsync(CreateBaseStream(), cancellationToken) + .ConfigureAwait(false), + Header.CompressionMethod, + cancellationToken + ) + .ConfigureAwait(false); + if (LeaveStreamOpen) + { + return SharpCompressStream.Create(decompressionStream, leaveOpen: true); + } + return decompressionStream; + } + + protected async ValueTask GetCryptoStreamAsync( + Stream plainStream, + CancellationToken cancellationToken = default + ) + { + var isFileEncrypted = FlagUtility.HasFlag(Header.Flags, HeaderFlags.Encrypted); + + if (Header.CompressedSize == 0 && isFileEncrypted) + { + throw new NotSupportedException("Cannot encrypt file with unknown size at start."); + } + + if ( + ( + Header.CompressedSize == 0 + && FlagUtility.HasFlag(Header.Flags, HeaderFlags.UsePostDataDescriptor) + ) || Header.IsZip64 + ) + { + plainStream = SharpCompressStream.Create(plainStream, leaveOpen: true); //make sure AES doesn't close + } + else + { + plainStream = new ReadOnlySubStream(plainStream, Header.CompressedSize); //make sure AES doesn't close + } + + if (isFileEncrypted) + { + switch (Header.CompressionMethod) + { + case ZipCompressionMethod.None: + case ZipCompressionMethod.Shrink: + case ZipCompressionMethod.Reduce1: + case ZipCompressionMethod.Reduce2: + case ZipCompressionMethod.Reduce3: + case ZipCompressionMethod.Reduce4: + case ZipCompressionMethod.Deflate: + case ZipCompressionMethod.Deflate64: + case ZipCompressionMethod.BZip2: + case ZipCompressionMethod.LZMA: + case ZipCompressionMethod.PPMd: + { + return new PkwareTraditionalCryptoStream( + plainStream, + await Header + .ComposeEncryptionDataAsync(plainStream, cancellationToken) + .ConfigureAwait(false), + CryptoMode.Decrypt + ); + } + + case ZipCompressionMethod.WinzipAes: + { + if (Header.WinzipAesEncryptionData != null) + { + return new WinzipAesCryptoStream( + plainStream, + Header.WinzipAesEncryptionData, + Header.CompressedSize - 10 + ); + } + return plainStream; + } + + default: + { + throw new InvalidOperationException("Header.CompressionMethod is invalid"); + } + } + } + return plainStream; + } + + protected async ValueTask CreateDecompressionStreamAsync( + Stream stream, + ZipCompressionMethod method, + CancellationToken cancellationToken = default + ) + { + switch (method) + { + case ZipCompressionMethod.None: + { + if (Header.CompressedSize is 0) + { + return new DataDescriptorStream(stream); + } + + return stream; + } + case ZipCompressionMethod.Shrink: + { + return new ShrinkStream( + stream, + CompressionMode.Decompress, + Header.CompressedSize, + Header.UncompressedSize + ); + } + case ZipCompressionMethod.Reduce1: + { + return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 1); + } + case ZipCompressionMethod.Reduce2: + { + return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 2); + } + case ZipCompressionMethod.Reduce3: + { + return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 3); + } + case ZipCompressionMethod.Reduce4: + { + return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 4); + } + case ZipCompressionMethod.Explode: + { + return await ExplodeStream.CreateAsync( + stream, + Header.CompressedSize, + Header.UncompressedSize, + Header.Flags, + cancellationToken + ); + } + + case ZipCompressionMethod.Deflate: + { + return new DeflateStream(stream, CompressionMode.Decompress); + } + case ZipCompressionMethod.Deflate64: + { + return new Deflate64Stream(stream, CompressionMode.Decompress); + } + case ZipCompressionMethod.BZip2: + { + return await BZip2Stream.CreateAsync( + stream, + CompressionMode.Decompress, + false, + cancellationToken: cancellationToken + ); + } + case ZipCompressionMethod.LZMA: + { + if (FlagUtility.HasFlag(Header.Flags, HeaderFlags.Encrypted)) + { + throw new NotSupportedException("LZMA with pkware encryption."); + } + var buffer = new byte[4]; + await stream.ReadFullyAsync(buffer, 0, 4, cancellationToken).ConfigureAwait(false); + var version = BinaryPrimitives.ReadUInt16LittleEndian(buffer.AsSpan(0, 2)); + var propsSize = BinaryPrimitives.ReadUInt16LittleEndian(buffer.AsSpan(2, 2)); + var props = new byte[propsSize]; + await stream + .ReadFullyAsync(props, 0, propsSize, cancellationToken) + .ConfigureAwait(false); + return LzmaStream.Create( + props, + stream, + Header.CompressedSize > 0 ? Header.CompressedSize - 4 - props.Length : -1, + FlagUtility.HasFlag(Header.Flags, HeaderFlags.Bit1) + ? -1 + : Header.UncompressedSize + ); + } + case ZipCompressionMethod.Xz: + { + return new XZStream(stream); + } + case ZipCompressionMethod.ZStandard: + { + return new DecompressionStream(stream); + } + case ZipCompressionMethod.PPMd: + { + var props = new byte[2]; + await stream.ReadFullyAsync(props, 0, 2, cancellationToken).ConfigureAwait(false); + return new PpmdStream(new PpmdProperties(props), stream, false); + } + case ZipCompressionMethod.WinzipAes: + { + var data = Header.Extra.SingleOrDefault(x => x.Type == ExtraDataType.WinZipAes); + if (data is null) + { + throw new InvalidFormatException("No Winzip AES extra data found."); + } + + if (data.Length != 7) + { + throw new InvalidFormatException("Winzip data length is not 7."); + } + + var compressedMethod = BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes); + + if (compressedMethod != 0x01 && compressedMethod != 0x02) + { + throw new InvalidFormatException( + "Unexpected vendor version number for WinZip AES metadata" + ); + } + + var vendorId = BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes.AsSpan(2)); + if (vendorId != 0x4541) + { + throw new InvalidFormatException( + "Unexpected vendor ID for WinZip AES metadata" + ); + } + + return await CreateDecompressionStreamAsync( + stream, + (ZipCompressionMethod) + BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes.AsSpan(5)), + cancellationToken + ); + } + default: + { + throw new NotSupportedException("CompressionMethod: " + Header.CompressionMethod); + } + } + } +} diff --git a/src/SharpCompress/Common/Zip/ZipFilePart.cs b/src/SharpCompress/Common/Zip/ZipFilePart.cs index 219f24fae..e201f6cac 100644 --- a/src/SharpCompress/Common/Zip/ZipFilePart.cs +++ b/src/SharpCompress/Common/Zip/ZipFilePart.cs @@ -2,8 +2,6 @@ using System.Buffers.Binary; using System.IO; using System.Linq; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common.Zip.Headers; using SharpCompress.Compressors; using SharpCompress.Compressors.BZip2; @@ -20,7 +18,7 @@ namespace SharpCompress.Common.Zip; -internal abstract class ZipFilePart : FilePart +internal abstract partial class ZipFilePart : FilePart { internal ZipFilePart(ZipFileEntry header, Stream stream) : base(header.ArchiveEncoding) @@ -106,7 +104,7 @@ protected Stream CreateDecompressionStream(Stream stream, ZipCompressionMethod m } case ZipCompressionMethod.Explode: { - return new ExplodeStream( + return ExplodeStream.Create( stream, Header.CompressedSize, Header.UncompressedSize, @@ -124,7 +122,7 @@ protected Stream CreateDecompressionStream(Stream stream, ZipCompressionMethod m } case ZipCompressionMethod.BZip2: { - return new BZip2Stream(stream, CompressionMode.Decompress, false); + return BZip2Stream.Create(stream, CompressionMode.Decompress, false); } case ZipCompressionMethod.LZMA: { @@ -136,7 +134,7 @@ protected Stream CreateDecompressionStream(Stream stream, ZipCompressionMethod m reader.ReadUInt16(); //LZMA version var props = new byte[reader.ReadUInt16()]; reader.Read(props, 0, props.Length); - return new LzmaStream( + return LzmaStream.Create( props, stream, Header.CompressedSize > 0 ? Header.CompressedSize - 4 - props.Length : -1, @@ -266,244 +264,4 @@ protected Stream GetCryptoStream(Stream plainStream) } return plainStream; } - - internal override async ValueTask GetCompressedStreamAsync( - CancellationToken cancellationToken = default - ) - { - if (!Header.HasData) - { - return Stream.Null; - } - var decompressionStream = await CreateDecompressionStreamAsync( - await GetCryptoStreamAsync(CreateBaseStream(), cancellationToken) - .ConfigureAwait(false), - Header.CompressionMethod, - cancellationToken - ) - .ConfigureAwait(false); - if (LeaveStreamOpen) - { - return SharpCompressStream.Create(decompressionStream, leaveOpen: true); - } - return decompressionStream; - } - - protected async Task GetCryptoStreamAsync( - Stream plainStream, - CancellationToken cancellationToken = default - ) - { - var isFileEncrypted = FlagUtility.HasFlag(Header.Flags, HeaderFlags.Encrypted); - - if (Header.CompressedSize == 0 && isFileEncrypted) - { - throw new NotSupportedException("Cannot encrypt file with unknown size at start."); - } - - if ( - ( - Header.CompressedSize == 0 - && FlagUtility.HasFlag(Header.Flags, HeaderFlags.UsePostDataDescriptor) - ) || Header.IsZip64 - ) - { - plainStream = SharpCompressStream.Create(plainStream, leaveOpen: true); //make sure AES doesn't close - } - else - { - plainStream = new ReadOnlySubStream(plainStream, Header.CompressedSize); //make sure AES doesn't close - } - - if (isFileEncrypted) - { - switch (Header.CompressionMethod) - { - case ZipCompressionMethod.None: - case ZipCompressionMethod.Shrink: - case ZipCompressionMethod.Reduce1: - case ZipCompressionMethod.Reduce2: - case ZipCompressionMethod.Reduce3: - case ZipCompressionMethod.Reduce4: - case ZipCompressionMethod.Deflate: - case ZipCompressionMethod.Deflate64: - case ZipCompressionMethod.BZip2: - case ZipCompressionMethod.LZMA: - case ZipCompressionMethod.PPMd: - { - return new PkwareTraditionalCryptoStream( - plainStream, - await Header - .ComposeEncryptionDataAsync(plainStream, cancellationToken) - .ConfigureAwait(false), - CryptoMode.Decrypt - ); - } - - case ZipCompressionMethod.WinzipAes: - { - if (Header.WinzipAesEncryptionData != null) - { - return new WinzipAesCryptoStream( - plainStream, - Header.WinzipAesEncryptionData, - Header.CompressedSize - 10 - ); - } - return plainStream; - } - - default: - { - throw new InvalidOperationException("Header.CompressionMethod is invalid"); - } - } - } - return plainStream; - } - - protected async Task CreateDecompressionStreamAsync( - Stream stream, - ZipCompressionMethod method, - CancellationToken cancellationToken = default - ) - { - switch (method) - { - case ZipCompressionMethod.None: - { - if (Header.CompressedSize is 0) - { - return new DataDescriptorStream(stream); - } - - return stream; - } - case ZipCompressionMethod.Shrink: - { - return new ShrinkStream( - stream, - CompressionMode.Decompress, - Header.CompressedSize, - Header.UncompressedSize - ); - } - case ZipCompressionMethod.Reduce1: - { - return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 1); - } - case ZipCompressionMethod.Reduce2: - { - return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 2); - } - case ZipCompressionMethod.Reduce3: - { - return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 3); - } - case ZipCompressionMethod.Reduce4: - { - return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 4); - } - case ZipCompressionMethod.Explode: - { - return new ExplodeStream( - stream, - Header.CompressedSize, - Header.UncompressedSize, - Header.Flags - ); - } - - case ZipCompressionMethod.Deflate: - { - return new DeflateStream(stream, CompressionMode.Decompress); - } - case ZipCompressionMethod.Deflate64: - { - return new Deflate64Stream(stream, CompressionMode.Decompress); - } - case ZipCompressionMethod.BZip2: - { - return new BZip2Stream(stream, CompressionMode.Decompress, false); - } - case ZipCompressionMethod.LZMA: - { - if (FlagUtility.HasFlag(Header.Flags, HeaderFlags.Encrypted)) - { - throw new NotSupportedException("LZMA with pkware encryption."); - } - var buffer = new byte[4]; - await stream.ReadFullyAsync(buffer, 0, 4, cancellationToken).ConfigureAwait(false); - var version = BinaryPrimitives.ReadUInt16LittleEndian(buffer.AsSpan(0, 2)); - var propsSize = BinaryPrimitives.ReadUInt16LittleEndian(buffer.AsSpan(2, 2)); - var props = new byte[propsSize]; - await stream - .ReadFullyAsync(props, 0, propsSize, cancellationToken) - .ConfigureAwait(false); - return new LzmaStream( - props, - stream, - Header.CompressedSize > 0 ? Header.CompressedSize - 4 - props.Length : -1, - FlagUtility.HasFlag(Header.Flags, HeaderFlags.Bit1) - ? -1 - : Header.UncompressedSize - ); - } - case ZipCompressionMethod.Xz: - { - return new XZStream(stream); - } - case ZipCompressionMethod.ZStandard: - { - return new DecompressionStream(stream); - } - case ZipCompressionMethod.PPMd: - { - var props = new byte[2]; - await stream.ReadFullyAsync(props, 0, 2, cancellationToken).ConfigureAwait(false); - return new PpmdStream(new PpmdProperties(props), stream, false); - } - case ZipCompressionMethod.WinzipAes: - { - var data = Header.Extra.SingleOrDefault(x => x.Type == ExtraDataType.WinZipAes); - if (data is null) - { - throw new InvalidFormatException("No Winzip AES extra data found."); - } - - if (data.Length != 7) - { - throw new InvalidFormatException("Winzip data length is not 7."); - } - - var compressedMethod = BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes); - - if (compressedMethod != 0x01 && compressedMethod != 0x02) - { - throw new InvalidFormatException( - "Unexpected vendor version number for WinZip AES metadata" - ); - } - - var vendorId = BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes.AsSpan(2)); - if (vendorId != 0x4541) - { - throw new InvalidFormatException( - "Unexpected vendor ID for WinZip AES metadata" - ); - } - - return await CreateDecompressionStreamAsync( - stream, - (ZipCompressionMethod) - BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes.AsSpan(5)), - cancellationToken - ); - } - default: - { - throw new NotSupportedException("CompressionMethod: " + Header.CompressionMethod); - } - } - } } diff --git a/src/SharpCompress/Common/Zip/ZipHeaderFactory.Async.cs b/src/SharpCompress/Common/Zip/ZipHeaderFactory.Async.cs new file mode 100644 index 000000000..8d585505d --- /dev/null +++ b/src/SharpCompress/Common/Zip/ZipHeaderFactory.Async.cs @@ -0,0 +1,166 @@ +using System; +using System.IO; +using System.Linq; +using System.Threading.Tasks; +using SharpCompress; +using SharpCompress.Common.Zip.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Common.Zip; + +internal partial class ZipHeaderFactory +{ + protected async ValueTask ReadHeader( + uint headerBytes, + AsyncBinaryReader reader, + bool zip64 = false + ) + { + switch (headerBytes) + { + case ENTRY_HEADER_BYTES: + { + var entryHeader = new LocalEntryHeader(_archiveEncoding); + await entryHeader.Read(reader); + await LoadHeaderAsync(entryHeader, reader.BaseStream).ConfigureAwait(false); + + _lastEntryHeader = entryHeader; + return entryHeader; + } + case DIRECTORY_START_HEADER_BYTES: + { + var entry = new DirectoryEntryHeader(_archiveEncoding); + await entry.Read(reader); + return entry; + } + case POST_DATA_DESCRIPTOR: + { + if ( + _lastEntryHeader != null + && FlagUtility.HasFlag( + _lastEntryHeader.NotNull().Flags, + HeaderFlags.UsePostDataDescriptor + ) + ) + { + _lastEntryHeader.Crc = await reader.ReadUInt32Async(); + _lastEntryHeader.CompressedSize = zip64 + ? (long)await reader.ReadUInt64Async() + : await reader.ReadUInt32Async(); + _lastEntryHeader.UncompressedSize = zip64 + ? (long)await reader.ReadUInt64Async() + : await reader.ReadUInt32Async(); + } + else + { + await reader.SkipAsync(zip64 ? 20 : 12); + } + return null; + } + case DIGITAL_SIGNATURE: + return null; + case DIRECTORY_END_HEADER_BYTES: + { + var entry = new DirectoryEndHeader(); + await entry.Read(reader); + return entry; + } + case SPLIT_ARCHIVE_HEADER_BYTES: + { + return new SplitHeader(); + } + case ZIP64_END_OF_CENTRAL_DIRECTORY: + { + var entry = new Zip64DirectoryEndHeader(); + await entry.Read(reader); + return entry; + } + case ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR: + { + var entry = new Zip64DirectoryEndLocatorHeader(); + await entry.Read(reader); + return entry; + } + default: + return null; + } + } + + /// + /// Loads encryption metadata and stream positioning for a header using async reads where needed. + /// + private async ValueTask LoadHeaderAsync(ZipFileEntry entryHeader, Stream stream) + { + if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.Encrypted)) + { + if ( + !entryHeader.IsDirectory + && entryHeader.CompressedSize == 0 + && FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor) + ) + { + throw new NotSupportedException( + "SharpCompress cannot currently read non-seekable Zip Streams with encrypted data that has been written in a non-seekable manner." + ); + } + + if (_password is null) + { + throw new CryptographicException("No password supplied for encrypted zip."); + } + + entryHeader.Password = _password; + + if (entryHeader.CompressionMethod == ZipCompressionMethod.WinzipAes) + { + var data = entryHeader.Extra.SingleOrDefault(x => + x.Type == ExtraDataType.WinZipAes + ); + if (data != null) + { + var keySize = (WinzipAesKeySize)data.DataBytes[4]; + + var salt = new byte[WinzipAesEncryptionData.KeyLengthInBytes(keySize) / 2]; + var passwordVerifyValue = new byte[2]; + await stream.ReadExactAsync(salt, 0, salt.Length).ConfigureAwait(false); + await stream.ReadExactAsync(passwordVerifyValue, 0, 2).ConfigureAwait(false); + + entryHeader.WinzipAesEncryptionData = new WinzipAesEncryptionData( + keySize, + salt, + passwordVerifyValue, + _password + ); + + entryHeader.CompressedSize -= (uint)(salt.Length + 2); + } + } + } + + if (entryHeader.IsDirectory) + { + return; + } + + switch (_mode) + { + case StreamingMode.Seekable: + { + entryHeader.DataStartPosition = stream.Position; + stream.Position += entryHeader.CompressedSize; + break; + } + + case StreamingMode.Streaming: + { + entryHeader.PackedStream = stream; + break; + } + + default: + { + throw new InvalidFormatException("Invalid StreamingMode"); + } + } + } +} diff --git a/src/SharpCompress/Common/Zip/ZipHeaderFactory.cs b/src/SharpCompress/Common/Zip/ZipHeaderFactory.cs index 44e407343..8d0ffdb4b 100644 --- a/src/SharpCompress/Common/Zip/ZipHeaderFactory.cs +++ b/src/SharpCompress/Common/Zip/ZipHeaderFactory.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Common.Zip; -internal class ZipHeaderFactory +internal partial class ZipHeaderFactory { internal const uint ENTRY_HEADER_BYTES = 0x04034b50; internal const uint POST_DATA_DESCRIPTOR = 0x08074b50; @@ -36,82 +36,6 @@ IArchiveEncoding archiveEncoding _archiveEncoding = archiveEncoding; } - protected async ValueTask ReadHeader( - uint headerBytes, - AsyncBinaryReader reader, - bool zip64 = false - ) - { - switch (headerBytes) - { - case ENTRY_HEADER_BYTES: - { - var entryHeader = new LocalEntryHeader(_archiveEncoding); - await entryHeader.Read(reader); - await LoadHeaderAsync(entryHeader, reader.BaseStream).ConfigureAwait(false); - - _lastEntryHeader = entryHeader; - return entryHeader; - } - case DIRECTORY_START_HEADER_BYTES: - { - var entry = new DirectoryEntryHeader(_archiveEncoding); - await entry.Read(reader); - return entry; - } - case POST_DATA_DESCRIPTOR: - { - if ( - _lastEntryHeader != null - && FlagUtility.HasFlag( - _lastEntryHeader.NotNull().Flags, - HeaderFlags.UsePostDataDescriptor - ) - ) - { - _lastEntryHeader.Crc = await reader.ReadUInt32Async(); - _lastEntryHeader.CompressedSize = zip64 - ? (long)await reader.ReadUInt64Async() - : await reader.ReadUInt32Async(); - _lastEntryHeader.UncompressedSize = zip64 - ? (long)await reader.ReadUInt64Async() - : await reader.ReadUInt32Async(); - } - else - { - await reader.SkipAsync(zip64 ? 20 : 12); - } - return null; - } - case DIGITAL_SIGNATURE: - return null; - case DIRECTORY_END_HEADER_BYTES: - { - var entry = new DirectoryEndHeader(); - await entry.Read(reader); - return entry; - } - case SPLIT_ARCHIVE_HEADER_BYTES: - { - return new SplitHeader(); - } - case ZIP64_END_OF_CENTRAL_DIRECTORY: - { - var entry = new Zip64DirectoryEndHeader(); - await entry.Read(reader); - return entry; - } - case ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR: - { - var entry = new Zip64DirectoryEndLocatorHeader(); - await entry.Read(reader); - return entry; - } - default: - return null; - } - } - protected ZipHeader? ReadHeader(uint headerBytes, BinaryReader reader, bool zip64 = false) { switch (headerBytes) @@ -283,82 +207,4 @@ private void LoadHeader(ZipFileEntry entryHeader, Stream stream) //} } - - /// - /// Loads encryption metadata and stream positioning for a header using async reads where needed. - /// - private async ValueTask LoadHeaderAsync(ZipFileEntry entryHeader, Stream stream) - { - if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.Encrypted)) - { - if ( - !entryHeader.IsDirectory - && entryHeader.CompressedSize == 0 - && FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor) - ) - { - throw new NotSupportedException( - "SharpCompress cannot currently read non-seekable Zip Streams with encrypted data that has been written in a non-seekable manner." - ); - } - - if (_password is null) - { - throw new CryptographicException("No password supplied for encrypted zip."); - } - - entryHeader.Password = _password; - - if (entryHeader.CompressionMethod == ZipCompressionMethod.WinzipAes) - { - var data = entryHeader.Extra.SingleOrDefault(x => - x.Type == ExtraDataType.WinZipAes - ); - if (data != null) - { - var keySize = (WinzipAesKeySize)data.DataBytes[4]; - - var salt = new byte[WinzipAesEncryptionData.KeyLengthInBytes(keySize) / 2]; - var passwordVerifyValue = new byte[2]; - await stream.ReadExactAsync(salt, 0, salt.Length).ConfigureAwait(false); - await stream.ReadExactAsync(passwordVerifyValue, 0, 2).ConfigureAwait(false); - - entryHeader.WinzipAesEncryptionData = new WinzipAesEncryptionData( - keySize, - salt, - passwordVerifyValue, - _password - ); - - entryHeader.CompressedSize -= (uint)(salt.Length + 2); - } - } - } - - if (entryHeader.IsDirectory) - { - return; - } - - switch (_mode) - { - case StreamingMode.Seekable: - { - entryHeader.DataStartPosition = stream.Position; - stream.Position += entryHeader.CompressedSize; - break; - } - - case StreamingMode.Streaming: - { - entryHeader.PackedStream = stream; - break; - } - - default: - { - throw new InvalidFormatException("Invalid StreamingMode"); - } - } - } } diff --git a/src/SharpCompress/Compressors/ADC/ADCBase.Async.cs b/src/SharpCompress/Compressors/ADC/ADCBase.Async.cs new file mode 100644 index 000000000..5ef29c2a2 --- /dev/null +++ b/src/SharpCompress/Compressors/ADC/ADCBase.Async.cs @@ -0,0 +1,177 @@ +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.ADC; + +public static partial class ADCBase +{ + /// + /// Decompresses a byte buffer asynchronously that's compressed with ADC + /// + /// Compressed buffer + /// Max size for decompressed data + /// Cancellation token + /// Result containing bytes read and decompressed data + public static async ValueTask DecompressAsync( + byte[] input, + int bufferSize = 262144, + CancellationToken cancellationToken = default + ) => await DecompressAsync(new MemoryStream(input), bufferSize, cancellationToken); + + /// + /// Decompresses a stream asynchronously that's compressed with ADC + /// + /// Stream containing compressed data + /// Max size for decompressed data + /// Cancellation token + /// Result containing bytes read and decompressed data + public static async ValueTask DecompressAsync( + Stream input, + int bufferSize = 262144, + CancellationToken cancellationToken = default + ) + { + var result = new AdcDecompressResult(); + + if (input is null || input.Length == 0) + { + result.BytesRead = 0; + result.Output = null; + return result; + } + + var start = (int)input.Position; + var position = (int)input.Position; + int chunkSize; + int offset; + int chunkType; + var buffer = ArrayPool.Shared.Rent(bufferSize); + var outPosition = 0; + var full = false; + byte[] temp = ArrayPool.Shared.Rent(3); + + try + { + while (position < input.Length) + { + cancellationToken.ThrowIfCancellationRequested(); + var readByte = input.ReadByte(); + if (readByte == -1) + { + break; + } + + chunkType = GetChunkType((byte)readByte); + + switch (chunkType) + { + case PLAIN: + chunkSize = GetChunkSize((byte)readByte); + if (outPosition + chunkSize > bufferSize) + { + full = true; + break; + } + + var readCount = await input.ReadAsync( + buffer, + outPosition, + chunkSize, + cancellationToken + ); + outPosition += readCount; + position += readCount + 1; + break; + case TWO_BYTE: + chunkSize = GetChunkSize((byte)readByte); + temp[0] = (byte)readByte; + temp[1] = (byte)input.ReadByte(); + offset = GetOffset(temp.AsSpan(0, 2)); + if (outPosition + chunkSize > bufferSize) + { + full = true; + break; + } + + if (offset == 0) + { + var lastByte = buffer[outPosition - 1]; + for (var i = 0; i < chunkSize; i++) + { + buffer[outPosition] = lastByte; + outPosition++; + } + + position += 2; + } + else + { + for (var i = 0; i < chunkSize; i++) + { + buffer[outPosition] = buffer[outPosition - offset - 1]; + outPosition++; + } + + position += 2; + } + + break; + case THREE_BYTE: + chunkSize = GetChunkSize((byte)readByte); + temp[0] = (byte)readByte; + temp[1] = (byte)input.ReadByte(); + temp[2] = (byte)input.ReadByte(); + offset = GetOffset(temp.AsSpan(0, 3)); + if (outPosition + chunkSize > bufferSize) + { + full = true; + break; + } + + if (offset == 0) + { + var lastByte = buffer[outPosition - 1]; + for (var i = 0; i < chunkSize; i++) + { + buffer[outPosition] = lastByte; + outPosition++; + } + + position += 3; + } + else + { + for (var i = 0; i < chunkSize; i++) + { + buffer[outPosition] = buffer[outPosition - offset - 1]; + outPosition++; + } + + position += 3; + } + + break; + } + + if (full) + { + break; + } + } + + var output = new byte[outPosition]; + Array.Copy(buffer, output, outPosition); + result.BytesRead = position - start; + result.Output = output; + return result; + } + finally + { + ArrayPool.Shared.Return(buffer); + ArrayPool.Shared.Return(temp); + } + } +} diff --git a/src/SharpCompress/Compressors/ADC/ADCBase.cs b/src/SharpCompress/Compressors/ADC/ADCBase.cs index ad5218986..6a6f2c2e5 100644 --- a/src/SharpCompress/Compressors/ADC/ADCBase.cs +++ b/src/SharpCompress/Compressors/ADC/ADCBase.cs @@ -50,7 +50,7 @@ public class AdcDecompressResult /// /// Provides static methods for decompressing Apple Data Compression data /// -public static class ADCBase +public static partial class ADCBase { private const int PLAIN = 1; private const int TWO_BYTE = 2; @@ -97,172 +97,7 @@ private static int GetOffset(ReadOnlySpan chunk) => public static int Decompress(byte[] input, out byte[]? output, int bufferSize = 262144) => Decompress(new MemoryStream(input), out output, bufferSize); - /// - /// Decompresses a byte buffer asynchronously that's compressed with ADC - /// - /// Compressed buffer - /// Max size for decompressed data - /// Cancellation token - /// Result containing bytes read and decompressed data - public static async ValueTask DecompressAsync( - byte[] input, - int bufferSize = 262144, - CancellationToken cancellationToken = default - ) => await DecompressAsync(new MemoryStream(input), bufferSize, cancellationToken); - - /// - /// Decompresses a stream asynchronously that's compressed with ADC - /// - /// Stream containing compressed data - /// Max size for decompressed data - /// Cancellation token - /// Result containing bytes read and decompressed data - public static async ValueTask DecompressAsync( - Stream input, - int bufferSize = 262144, - CancellationToken cancellationToken = default - ) - { - var result = new AdcDecompressResult(); - - if (input is null || input.Length == 0) - { - result.BytesRead = 0; - result.Output = null; - return result; - } - - var start = (int)input.Position; - var position = (int)input.Position; - int chunkSize; - int offset; - int chunkType; - var buffer = ArrayPool.Shared.Rent(bufferSize); - var outPosition = 0; - var full = false; - byte[] temp = ArrayPool.Shared.Rent(3); - - try - { - while (position < input.Length) - { - cancellationToken.ThrowIfCancellationRequested(); - var readByte = input.ReadByte(); - if (readByte == -1) - { - break; - } - - chunkType = GetChunkType((byte)readByte); - - switch (chunkType) - { - case PLAIN: - chunkSize = GetChunkSize((byte)readByte); - if (outPosition + chunkSize > bufferSize) - { - full = true; - break; - } - - var readCount = await input.ReadAsync( - buffer, - outPosition, - chunkSize, - cancellationToken - ); - outPosition += readCount; - position += readCount + 1; - break; - case TWO_BYTE: - chunkSize = GetChunkSize((byte)readByte); - temp[0] = (byte)readByte; - temp[1] = (byte)input.ReadByte(); - offset = GetOffset(temp.AsSpan(0, 2)); - if (outPosition + chunkSize > bufferSize) - { - full = true; - break; - } - - if (offset == 0) - { - var lastByte = buffer[outPosition - 1]; - for (var i = 0; i < chunkSize; i++) - { - buffer[outPosition] = lastByte; - outPosition++; - } - - position += 2; - } - else - { - for (var i = 0; i < chunkSize; i++) - { - buffer[outPosition] = buffer[outPosition - offset - 1]; - outPosition++; - } - - position += 2; - } - - break; - case THREE_BYTE: - chunkSize = GetChunkSize((byte)readByte); - temp[0] = (byte)readByte; - temp[1] = (byte)input.ReadByte(); - temp[2] = (byte)input.ReadByte(); - offset = GetOffset(temp.AsSpan(0, 3)); - if (outPosition + chunkSize > bufferSize) - { - full = true; - break; - } - - if (offset == 0) - { - var lastByte = buffer[outPosition - 1]; - for (var i = 0; i < chunkSize; i++) - { - buffer[outPosition] = lastByte; - outPosition++; - } - - position += 3; - } - else - { - for (var i = 0; i < chunkSize; i++) - { - buffer[outPosition] = buffer[outPosition - offset - 1]; - outPosition++; - } - - position += 3; - } - - break; - } - - if (full) - { - break; - } - } - - var output = new byte[outPosition]; - Array.Copy(buffer, output, outPosition); - result.BytesRead = position - start; - result.Output = output; - return result; - } - finally - { - ArrayPool.Shared.Return(buffer); - ArrayPool.Shared.Return(temp); - } - } + // Async methods moved to ADCBase.Async.cs /// /// Decompresses a stream that's compressed with ADC diff --git a/src/SharpCompress/Compressors/ADC/ADCStream.Async.cs b/src/SharpCompress/Compressors/ADC/ADCStream.Async.cs new file mode 100644 index 000000000..cf12a8c70 --- /dev/null +++ b/src/SharpCompress/Compressors/ADC/ADCStream.Async.cs @@ -0,0 +1,108 @@ +// +// ADC.cs +// +// Author: +// Natalia Portillo +// +// Copyright (c) 2016 © Claunia.com +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +#nullable disable + +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.ADC; + +public sealed partial class ADCStream +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + if (count == 0) + { + return 0; + } + if (buffer is null) + { + throw new ArgumentNullException(nameof(buffer)); + } + if (count < 0) + { + throw new ArgumentOutOfRangeException(nameof(count)); + } + if (offset < buffer.GetLowerBound(0)) + { + throw new ArgumentOutOfRangeException(nameof(offset)); + } + if ((offset + count) > buffer.GetLength(0)) + { + throw new ArgumentOutOfRangeException(nameof(count)); + } + + if (_outBuffer is null) + { + var result = await ADCBase.DecompressAsync( + _stream, + cancellationToken: cancellationToken + ); + _outBuffer = result.Output; + _outPosition = 0; + } + + var inPosition = offset; + var toCopy = count; + var copied = 0; + + while (_outPosition + toCopy >= _outBuffer.Length) + { + cancellationToken.ThrowIfCancellationRequested(); + var piece = _outBuffer.Length - _outPosition; + Array.Copy(_outBuffer, _outPosition, buffer, inPosition, piece); + inPosition += piece; + copied += piece; + _position += piece; + toCopy -= piece; + var result = await ADCBase.DecompressAsync( + _stream, + cancellationToken: cancellationToken + ); + _outBuffer = result.Output; + _outPosition = 0; + if (result.BytesRead == 0 || _outBuffer is null || _outBuffer.Length == 0) + { + return copied; + } + } + + Array.Copy(_outBuffer, _outPosition, buffer, inPosition, toCopy); + _outPosition += toCopy; + _position += toCopy; + copied += toCopy; + return copied; + } +} diff --git a/src/SharpCompress/Compressors/ADC/ADCStream.cs b/src/SharpCompress/Compressors/ADC/ADCStream.cs index 935207c9b..c35514a65 100644 --- a/src/SharpCompress/Compressors/ADC/ADCStream.cs +++ b/src/SharpCompress/Compressors/ADC/ADCStream.cs @@ -37,7 +37,7 @@ namespace SharpCompress.Compressors.ADC; /// /// Provides a forward readable only stream that decompresses ADC data /// -public sealed class ADCStream : Stream, IStreamStack +public sealed partial class ADCStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -189,76 +189,6 @@ public override int Read(byte[] buffer, int offset, int count) return copied; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - if (count == 0) - { - return 0; - } - if (buffer is null) - { - throw new ArgumentNullException(nameof(buffer)); - } - if (count < 0) - { - throw new ArgumentOutOfRangeException(nameof(count)); - } - if (offset < buffer.GetLowerBound(0)) - { - throw new ArgumentOutOfRangeException(nameof(offset)); - } - if ((offset + count) > buffer.GetLength(0)) - { - throw new ArgumentOutOfRangeException(nameof(count)); - } - - if (_outBuffer is null) - { - var result = await ADCBase.DecompressAsync( - _stream, - cancellationToken: cancellationToken - ); - _outBuffer = result.Output; - _outPosition = 0; - } - - var inPosition = offset; - var toCopy = count; - var copied = 0; - - while (_outPosition + toCopy >= _outBuffer.Length) - { - cancellationToken.ThrowIfCancellationRequested(); - var piece = _outBuffer.Length - _outPosition; - Array.Copy(_outBuffer, _outPosition, buffer, inPosition, piece); - inPosition += piece; - copied += piece; - _position += piece; - toCopy -= piece; - var result = await ADCBase.DecompressAsync( - _stream, - cancellationToken: cancellationToken - ); - _outBuffer = result.Output; - _outPosition = 0; - if (result.BytesRead == 0 || _outBuffer is null || _outBuffer.Length == 0) - { - return copied; - } - } - - Array.Copy(_outBuffer, _outPosition, buffer, inPosition, toCopy); - _outPosition += toCopy; - _position += toCopy; - copied += toCopy; - return copied; - } - public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); public override void SetLength(long value) => throw new NotSupportedException(); diff --git a/src/SharpCompress/Compressors/ArcLzw/BitReader.cs b/src/SharpCompress/Compressors/ArcLzw/BitReader.cs index 414e5e0a5..ecca0907f 100644 --- a/src/SharpCompress/Compressors/ArcLzw/BitReader.cs +++ b/src/SharpCompress/Compressors/ArcLzw/BitReader.cs @@ -18,13 +18,17 @@ public BitReader(byte[] inputData) public int? ReadBits(int bitCount) { if (bitCount <= 0 || bitCount > 16) + { throw new ArgumentOutOfRangeException( nameof(bitCount), "Bit count must be between 1 and 16" ); + } if (bytePosition >= data.Length) + { return null; + } int result = 0; int bitsRead = 0; @@ -32,7 +36,9 @@ public BitReader(byte[] inputData) while (bitsRead < bitCount) { if (bytePosition >= data.Length) + { return null; + } int bitsAvailable = 8 - bitPosition; int bitsToRead = Math.Min(bitCount - bitsRead, bitsAvailable); diff --git a/src/SharpCompress/Compressors/Arj/BitReader.Async.cs b/src/SharpCompress/Compressors/Arj/BitReader.Async.cs new file mode 100644 index 000000000..612c91434 --- /dev/null +++ b/src/SharpCompress/Compressors/Arj/BitReader.Async.cs @@ -0,0 +1,52 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.Arj; + +public partial class BitReader +{ + /// + /// Asynchronously reads a single bit from the stream. Returns 0 or 1. + /// + public async ValueTask ReadBitAsync(CancellationToken cancellationToken) + { + if (_bitCount == 0) + { + var buffer = new byte[1]; + int bytesRead = await _input + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (bytesRead < 1) + { + throw new EndOfStreamException("No more data available in BitReader."); + } + + _bitBuffer = buffer[0]; + _bitCount = 8; + } + + int bit = (_bitBuffer >> (_bitCount - 1)) & 1; + _bitCount--; + return bit; + } + + /// + /// Asynchronously reads n bits (up to 32) from the stream. + /// + public async ValueTask ReadBitsAsync(int count, CancellationToken cancellationToken) + { + if (count < 0 || count > 32) + { + throw new ArgumentOutOfRangeException(nameof(count), "Count must be between 0 and 32."); + } + + int result = 0; + for (int i = 0; i < count; i++) + { + result = (result << 1) | await ReadBitAsync(cancellationToken).ConfigureAwait(false); + } + return result; + } +} diff --git a/src/SharpCompress/Compressors/Arj/BitReader.cs b/src/SharpCompress/Compressors/Arj/BitReader.cs index 276c79e96..feb8cb944 100644 --- a/src/SharpCompress/Compressors/Arj/BitReader.cs +++ b/src/SharpCompress/Compressors/Arj/BitReader.cs @@ -4,7 +4,7 @@ namespace SharpCompress.Compressors.Arj { [CLSCompliant(true)] - public class BitReader + public partial class BitReader { private readonly Stream _input; private int _bitBuffer; // currently buffered bits diff --git a/src/SharpCompress/Compressors/Arj/LHDecoderStream.Async.cs b/src/SharpCompress/Compressors/Arj/LHDecoderStream.Async.cs new file mode 100644 index 000000000..037c56ba3 --- /dev/null +++ b/src/SharpCompress/Compressors/Arj/LHDecoderStream.Async.cs @@ -0,0 +1,199 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.Arj; + +public sealed partial class LHDecoderStream +{ + /// + /// Asynchronously decodes a single element (literal or back-reference) and appends it to _buffer. + /// Returns true if data was added, or false if all input has already been decoded. + /// + private async ValueTask DecodeNextAsync(CancellationToken cancellationToken) + { + if (_buffer.Count >= _originalSize) + { + _finishedDecoding = true; + return false; + } + + int len = await DecodeValAsync(0, 7, cancellationToken).ConfigureAwait(false); + if (len == 0) + { + byte nextChar = (byte) + await _bitReader.ReadBitsAsync(8, cancellationToken).ConfigureAwait(false); + _buffer.Add(nextChar); + } + else + { + int repCount = len + THRESHOLD - 1; + int backPtr = await DecodeValAsync(9, 13, cancellationToken).ConfigureAwait(false); + + if (backPtr >= _buffer.Count) + { + throw new InvalidDataException("Invalid back_ptr in LH stream"); + } + + int srcIndex = _buffer.Count - 1 - backPtr; + for (int j = 0; j < repCount && _buffer.Count < _originalSize; j++) + { + byte b = _buffer[srcIndex]; + _buffer.Add(b); + srcIndex++; + // srcIndex may grow; it's allowed (source region can overlap destination) + } + } + + if (_buffer.Count >= _originalSize) + { + _finishedDecoding = true; + } + + return true; + } + + private async ValueTask DecodeValAsync( + int from, + int to, + CancellationToken cancellationToken + ) + { + int add = 0; + int bit = from; + + while ( + bit < to + && await _bitReader.ReadBitsAsync(1, cancellationToken).ConfigureAwait(false) == 1 + ) + { + add |= 1 << bit; + bit++; + } + + int res = + bit > 0 + ? await _bitReader.ReadBitsAsync(bit, cancellationToken).ConfigureAwait(false) + : 0; + return res + add; + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException(nameof(LHDecoderStream)); + } + + if (buffer is null) + { + throw new ArgumentNullException(nameof(buffer)); + } + + if (offset < 0 || count < 0 || offset + count > buffer.Length) + { + throw new ArgumentOutOfRangeException("offset/count"); + } + + if (_readPosition >= _originalSize) + { + return 0; // EOF + } + + int totalRead = 0; + + while (totalRead < count && _readPosition < _originalSize) + { + cancellationToken.ThrowIfCancellationRequested(); + + if (_readPosition >= _buffer.Count) + { + bool had = await DecodeNextAsync(cancellationToken).ConfigureAwait(false); + if (!had) + { + break; + } + } + + int available = _buffer.Count - (int)_readPosition; + if (available <= 0) + { + if (!_finishedDecoding) + { + continue; + } + break; + } + + int toCopy = Math.Min(available, count - totalRead); + _buffer.CopyTo((int)_readPosition, buffer, offset + totalRead, toCopy); + + _readPosition += toCopy; + totalRead += toCopy; + } + + return totalRead; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException(nameof(LHDecoderStream)); + } + + if (_readPosition >= _originalSize) + { + return 0; // EOF + } + + int totalRead = 0; + + while (totalRead < buffer.Length && _readPosition < _originalSize) + { + cancellationToken.ThrowIfCancellationRequested(); + + if (_readPosition >= _buffer.Count) + { + bool had = await DecodeNextAsync(cancellationToken).ConfigureAwait(false); + if (!had) + { + break; + } + } + + int available = _buffer.Count - (int)_readPosition; + if (available <= 0) + { + if (!_finishedDecoding) + { + continue; + } + break; + } + + int toCopy = Math.Min(available, buffer.Length - totalRead); + for (int i = 0; i < toCopy; i++) + { + buffer.Span[totalRead + i] = _buffer[(int)_readPosition + i]; + } + + _readPosition += toCopy; + totalRead += toCopy; + } + + return totalRead; + } +#endif +} diff --git a/src/SharpCompress/Compressors/Arj/LHDecoderStream.cs b/src/SharpCompress/Compressors/Arj/LHDecoderStream.cs index e17c07441..85d551b5a 100644 --- a/src/SharpCompress/Compressors/Arj/LHDecoderStream.cs +++ b/src/SharpCompress/Compressors/Arj/LHDecoderStream.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Compressors.Arj { [CLSCompliant(true)] - public sealed class LHDecoderStream : Stream, IStreamStack + public sealed partial class LHDecoderStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -45,10 +45,12 @@ public LHDecoderStream(Stream compressedStream, int originalSize) { _stream = compressedStream ?? throw new ArgumentNullException(nameof(compressedStream)); if (!compressedStream.CanRead) + { throw new ArgumentException( "compressedStream must be readable.", nameof(compressedStream) ); + } _bitReader = new BitReader(compressedStream); _originalSize = originalSize; @@ -94,7 +96,9 @@ private bool DecodeNext() int backPtr = DecodeVal(9, 13); if (backPtr >= _buffer.Count) + { throw new InvalidDataException("Invalid back_ptr in LH stream"); + } int srcIndex = _buffer.Count - 1 - backPtr; for (int j = 0; j < repCount && _buffer.Count < _originalSize; j++) @@ -136,14 +140,24 @@ private int DecodeVal(int from, int to) public override int Read(byte[] buffer, int offset, int count) { if (_disposed) + { throw new ObjectDisposedException(nameof(LHDecoderStream)); + } + if (buffer == null) + { throw new ArgumentNullException(nameof(buffer)); + } + if (offset < 0 || count < 0 || offset + count > buffer.Length) + { throw new ArgumentOutOfRangeException("offset/count"); + } if (_readPosition >= _originalSize) + { return 0; // EOF + } int totalRead = 0; diff --git a/src/SharpCompress/Compressors/BZip2/BZip2Stream.Async.cs b/src/SharpCompress/Compressors/BZip2/BZip2Stream.Async.cs new file mode 100644 index 000000000..276a57e65 --- /dev/null +++ b/src/SharpCompress/Compressors/BZip2/BZip2Stream.Async.cs @@ -0,0 +1,94 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.BZip2; + +public sealed partial class BZip2Stream +{ + /// + /// Create a BZip2Stream asynchronously + /// + /// The stream to read from + /// Compression Mode + /// Decompress Concatenated + /// Cancellation Token + public static async ValueTask CreateAsync( + Stream stream, + CompressionMode compressionMode, + bool decompressConcatenated, + bool leaveOpen = false, + CancellationToken cancellationToken = default + ) + { + var bZip2Stream = new BZip2Stream(); + bZip2Stream.leaveOpen = leaveOpen; +#if DEBUG_STREAMS + bZip2Stream.DebugConstruct(typeof(BZip2Stream)); +#endif + bZip2Stream.Mode = compressionMode; + if (bZip2Stream.Mode == CompressionMode.Compress) + { + bZip2Stream.stream = new CBZip2OutputStream(stream); + } + else + { + bZip2Stream.stream = await CBZip2InputStream.CreateAsync( + stream, + decompressConcatenated, + cancellationToken + ); + } + + return bZip2Stream; + } + + /// + /// Asynchronously consumes two bytes to test if there is a BZip2 header + /// + /// + /// + /// + public static async ValueTask IsBZip2Async( + Stream stream, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + var buffer = new byte[2]; + var bytesRead = await stream.ReadAsync(buffer, 0, 2, cancellationToken); + if (bytesRead < 2 || buffer[0] != 'B' || buffer[1] != 'Z') + { + return false; + } + return true; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) => await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + + public override async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) => await stream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); +#endif + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) => await stream.ReadAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); + + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) => await stream.WriteAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); +} diff --git a/src/SharpCompress/Compressors/BZip2/BZip2Stream.cs b/src/SharpCompress/Compressors/BZip2/BZip2Stream.cs index 03a9f6b86..b244fec4e 100644 --- a/src/SharpCompress/Compressors/BZip2/BZip2Stream.cs +++ b/src/SharpCompress/Compressors/BZip2/BZip2Stream.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Compressors.BZip2; -public sealed class BZip2Stream : Stream, IStreamStack +public sealed partial class BZip2Stream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -28,9 +28,11 @@ int IStreamStack.BufferPosition void IStreamStack.SetPosition(long position) { } - private readonly Stream stream; + private Stream stream = default!; private bool isDisposed; - private readonly bool leaveOpen; + private bool leaveOpen; + + private BZip2Stream() { } /// /// Create a BZip2Stream @@ -38,38 +40,40 @@ void IStreamStack.SetPosition(long position) { } /// The stream to read from /// Compression Mode /// Decompress Concatenated - /// Leave the stream open after disposing - public BZip2Stream( + public static BZip2Stream Create( Stream stream, CompressionMode compressionMode, bool decompressConcatenated, bool leaveOpen = false ) { + var bZip2Stream = new BZip2Stream(); + bZip2Stream.leaveOpen = leaveOpen; #if DEBUG_STREAMS - this.DebugConstruct(typeof(BZip2Stream)); + bZip2Stream.DebugConstruct(typeof(BZip2Stream)); #endif - this.leaveOpen = leaveOpen; - Mode = compressionMode; - if (Mode == CompressionMode.Compress) + bZip2Stream.Mode = compressionMode; + if (bZip2Stream.Mode == CompressionMode.Compress) { - this.stream = new CBZip2OutputStream(stream, 9, leaveOpen); + bZip2Stream.stream = new CBZip2OutputStream(stream); } else { - this.stream = new CBZip2InputStream( + bZip2Stream.stream = CBZip2InputStream.Create( stream, decompressConcatenated, - leaveOpen: leaveOpen + leaveOpen ); } + + return bZip2Stream; } public void Finish() => (stream as CBZip2OutputStream)?.Finish(); protected override void Dispose(bool disposing) { - if (isDisposed) + if (isDisposed || leaveOpen) { return; } @@ -83,7 +87,7 @@ protected override void Dispose(bool disposing) } } - public CompressionMode Mode { get; } + public CompressionMode Mode { get; private set; } public override bool CanRead => stream.CanRead; @@ -111,36 +115,11 @@ public override int Read(byte[] buffer, int offset, int count) => public override void SetLength(long value) => stream.SetLength(value); #if !LEGACY_DOTNET - public override int Read(Span buffer) => stream.Read(buffer); public override void Write(ReadOnlySpan buffer) => stream.Write(buffer); - - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) => await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - - public override async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) => await stream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); #endif - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) => await stream.ReadAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); - - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) => await stream.WriteAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); - public override void Write(byte[] buffer, int offset, int count) => stream.Write(buffer, offset, count); @@ -161,4 +140,6 @@ public static bool IsBZip2(Stream stream) } return true; } + + // Async methods moved to BZip2Stream.Async.cs } diff --git a/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.Async.cs b/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.Async.cs new file mode 100644 index 000000000..7252a8027 --- /dev/null +++ b/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.Async.cs @@ -0,0 +1,873 @@ +#nullable disable + +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.BZip2; + +internal partial class CBZip2InputStream +{ + public async ValueTask ReadByteAsync(CancellationToken cancellationToken) + { + if (streamEnd) + { + return -1; + } + var retChar = currentChar; + switch (currentState) + { + case START_BLOCK_STATE: + break; + case RAND_PART_A_STATE: + break; + case RAND_PART_B_STATE: + await SetupRandPartBAsync(cancellationToken).ConfigureAwait(false); + break; + case RAND_PART_C_STATE: + await SetupRandPartCAsync(cancellationToken).ConfigureAwait(false); + break; + case NO_RAND_PART_A_STATE: + break; + case NO_RAND_PART_B_STATE: + await SetupNoRandPartBAsync(cancellationToken).ConfigureAwait(false); + break; + case NO_RAND_PART_C_STATE: + await SetupNoRandPartCAsync(cancellationToken).ConfigureAwait(false); + break; + default: + break; + } + return retChar; + } + + private async ValueTask InitializeAsync( + bool isFirstStream, + CancellationToken cancellationToken + ) + { + var singleByte = new byte[1]; + var read0 = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + var magic0 = read0 == 0 ? -1 : singleByte[0]; + var read1 = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + var magic1 = read1 == 0 ? -1 : singleByte[0]; + var read2 = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + var magic2 = read2 == 0 ? -1 : singleByte[0]; + if (magic0 == -1 && !isFirstStream) + { + return false; + } + if (magic0 != 'B' || magic1 != 'Z' || magic2 != 'h') + { + throw new IOException("Not a BZIP2 marked stream"); + } + var read3 = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + var magic3 = read3 == 0 ? -1 : singleByte[0]; + if (magic3 < '1' || magic3 > '9') + { + BsFinishedWithStream(); + streamEnd = true; + return false; + } + + SetDecompressStructureSizes(magic3 - '0'); + bsLive = 0; + computedCombinedCRC = 0; + return true; + } + + private async ValueTask InitBlockAsync(CancellationToken cancellationToken) + { + char magic1, + magic2, + magic3, + magic4; + char magic5, + magic6; + + while (true) + { + magic1 = await BsGetUCharAsync(cancellationToken).ConfigureAwait(false); + magic2 = await BsGetUCharAsync(cancellationToken).ConfigureAwait(false); + magic3 = await BsGetUCharAsync(cancellationToken).ConfigureAwait(false); + magic4 = await BsGetUCharAsync(cancellationToken).ConfigureAwait(false); + magic5 = await BsGetUCharAsync(cancellationToken).ConfigureAwait(false); + magic6 = await BsGetUCharAsync(cancellationToken).ConfigureAwait(false); + if ( + magic1 != 0x17 + || magic2 != 0x72 + || magic3 != 0x45 + || magic4 != 0x38 + || magic5 != 0x50 + || magic6 != 0x90 + ) + { + break; + } + + if (await CompleteAsync(cancellationToken).ConfigureAwait(false)) + { + return; + } + } + + if ( + magic1 != 0x31 + || magic2 != 0x41 + || magic3 != 0x59 + || magic4 != 0x26 + || magic5 != 0x53 + || magic6 != 0x59 + ) + { + BadBlockHeader(); + streamEnd = true; + return; + } + + storedBlockCRC = await BsGetInt32Async(cancellationToken).ConfigureAwait(false); + + if (await BsRAsync(1, cancellationToken).ConfigureAwait(false) == 1) + { + blockRandomised = true; + } + else + { + blockRandomised = false; + } + + // currBlockNo++; + await GetAndMoveToFrontDecodeAsync(cancellationToken).ConfigureAwait(false); + + mCrc.InitialiseCRC(); + currentState = START_BLOCK_STATE; + } + + private async ValueTask CompleteAsync(CancellationToken cancellationToken) + { + storedCombinedCRC = await BsGetInt32Async(cancellationToken).ConfigureAwait(false); + if (storedCombinedCRC != computedCombinedCRC) + { + CrcError(); + } + + var complete = + !decompressConcatenated + || !(await InitializeAsync(false, cancellationToken).ConfigureAwait(false)); + if (complete) + { + BsFinishedWithStream(); + streamEnd = true; + } + + // Look for the next .bz2 stream if decompressing + // concatenated files. + return complete; + } + + private async ValueTask BsGetintAsync(CancellationToken cancellationToken) + { + var u = 0; + u = (u << 8) | (await BsRAsync(8, cancellationToken).ConfigureAwait(false)); + u = (u << 8) | (await BsRAsync(8, cancellationToken).ConfigureAwait(false)); + u = (u << 8) | (await BsRAsync(8, cancellationToken).ConfigureAwait(false)); + u = (u << 8) | (await BsRAsync(8, cancellationToken).ConfigureAwait(false)); + return u; + } + + private async ValueTask RecvDecodingTablesAsync(CancellationToken cancellationToken) + { + var len = InitCharArray(BZip2Constants.N_GROUPS, BZip2Constants.MAX_ALPHA_SIZE); + int i, + j, + t, + nGroups, + nSelectors, + alphaSize; + int minLen, + maxLen; + var inUse16 = new bool[16]; + + /* Receive the mapping table */ + for (i = 0; i < 16; i++) + { + if (await BsRAsync(1, cancellationToken).ConfigureAwait(false) == 1) + { + inUse16[i] = true; + } + else + { + inUse16[i] = false; + } + } + + for (i = 0; i < 256; i++) + { + inUse[i] = false; + } + + for (i = 0; i < 16; i++) + { + if (inUse16[i]) + { + for (j = 0; j < 16; j++) + { + if (await BsRAsync(1, cancellationToken).ConfigureAwait(false) == 1) + { + inUse[(i * 16) + j] = true; + } + } + } + } + + MakeMaps(); + alphaSize = nInUse + 2; + + /* Now the selectors */ + nGroups = await BsRAsync(3, cancellationToken).ConfigureAwait(false); + nSelectors = await BsRAsync(15, cancellationToken).ConfigureAwait(false); + for (i = 0; i < nSelectors; i++) + { + j = 0; + while (await BsRAsync(1, cancellationToken).ConfigureAwait(false) == 1) + { + j++; + } + if (i < BZip2Constants.MAX_SELECTORS) + { + selectorMtf[i] = (char)j; + } + } + + nSelectors = Math.Min(nSelectors, BZip2Constants.MAX_SELECTORS); + + /* Undo the MTF values for the selectors. */ + { + var pos = new char[BZip2Constants.N_GROUPS]; + char tmp, + v; + for (v = '\0'; v < nGroups; v++) + { + pos[v] = v; + } + + for (i = 0; i < nSelectors; i++) + { + v = selectorMtf[i]; + tmp = pos[v]; + while (v > 0) + { + pos[v] = pos[v - 1]; + v--; + } + pos[0] = tmp; + selector[i] = tmp; + } + } + + /* Now the coding tables */ + for (t = 0; t < nGroups; t++) + { + var curr = await BsRAsync(5, cancellationToken).ConfigureAwait(false); + for (i = 0; i < alphaSize; i++) + { + while (await BsRAsync(1, cancellationToken).ConfigureAwait(false) == 1) + { + if (await BsRAsync(1, cancellationToken).ConfigureAwait(false) == 0) + { + curr++; + } + else + { + curr--; + } + } + len[t][i] = (char)curr; + } + } + + /* Create the Huffman decoding tables */ + for (t = 0; t < nGroups; t++) + { + minLen = 32; + maxLen = 0; + for (i = 0; i < alphaSize; i++) + { + if (len[t][i] > maxLen) + { + maxLen = len[t][i]; + } + if (len[t][i] < minLen) + { + minLen = len[t][i]; + } + } + HbCreateDecodeTables(limit[t], basev[t], perm[t], len[t], minLen, maxLen, alphaSize); + minLens[t] = minLen; + } + } + + private async ValueTask GetAndMoveToFrontDecodeAsync(CancellationToken cancellationToken) + { + var yy = new char[256]; + int i, + j, + nextSym, + limitLast; + int EOB, + groupNo, + groupPos; + var singleByte = new byte[1]; + + limitLast = BZip2Constants.baseBlockSize * blockSize100k; + origPtr = await BsGetIntVSAsync(24, cancellationToken).ConfigureAwait(false); + + await RecvDecodingTablesAsync(cancellationToken).ConfigureAwait(false); + EOB = nInUse + 1; + groupNo = -1; + groupPos = 0; + + /* + Setting up the unzftab entries here is not strictly + necessary, but it does save having to do it later + in a separate pass, and so saves a block's worth of + cache misses. + */ + for (i = 0; i <= 255; i++) + { + unzftab[i] = 0; + } + + for (i = 0; i <= 255; i++) + { + yy[i] = (char)i; + } + + last = -1; + + { + int zt, + zn, + zvec, + zj; + if (groupPos == 0) + { + groupNo++; + groupPos = BZip2Constants.G_SIZE; + } + groupPos--; + zt = selector[groupNo]; + zn = minLens[zt]; + zvec = await BsRAsync(zn, cancellationToken).ConfigureAwait(false); + while (zvec > limit[zt][zn]) + { + zn++; + { + { + while (bsLive < 1) + { + int zzi; + int thech = '\0'; + try + { + var readCount = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + thech = readCount == 0 ? '\uffff' : singleByte[0]; + } + catch (IOException) + { + CompressedStreamEOF(); + } + if (thech == '\uffff') + { + CompressedStreamEOF(); + } + zzi = thech; + bsBuff = (bsBuff << 8) | (zzi & 0xff); + bsLive += 8; + } + } + zj = (bsBuff >> (bsLive - 1)) & 1; + bsLive--; + } + zvec = (zvec << 1) | zj; + } + nextSym = perm[zt][zvec - basev[zt][zn]]; + } + + while (true) + { + if (nextSym == EOB) + { + break; + } + + if (nextSym == BZip2Constants.RUNA || nextSym == BZip2Constants.RUNB) + { + char ch; + var s = -1; + var N = 1; + do + { + if (nextSym == BZip2Constants.RUNA) + { + s += (0 + 1) * N; + } + else if (nextSym == BZip2Constants.RUNB) + { + s += (1 + 1) * N; + } + N *= 2; + { + int zt, + zn, + zvec, + zj; + if (groupPos == 0) + { + groupNo++; + groupPos = BZip2Constants.G_SIZE; + } + groupPos--; + zt = selector[groupNo]; + zn = minLens[zt]; + zvec = await BsRAsync(zn, cancellationToken).ConfigureAwait(false); + while (zvec > limit[zt][zn]) + { + zn++; + { + { + while (bsLive < 1) + { + int zzi; + int thech = '\0'; + try + { + var readCount = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + thech = readCount == 0 ? '\uffff' : singleByte[0]; + } + catch (IOException) + { + CompressedStreamEOF(); + } + if (thech == '\uffff') + { + CompressedStreamEOF(); + } + zzi = thech; + bsBuff = (bsBuff << 8) | (zzi & 0xff); + bsLive += 8; + } + } + zj = (bsBuff >> (bsLive - 1)) & 1; + bsLive--; + } + zvec = (zvec << 1) | zj; + } + nextSym = perm[zt][zvec - basev[zt][zn]]; + } + } while (nextSym == BZip2Constants.RUNA || nextSym == BZip2Constants.RUNB); + + s++; + ch = seqToUnseq[yy[0]]; + unzftab[ch] += s; + + while (s > 0) + { + last++; + ll8[last] = ch; + s--; + } + + if (last >= limitLast) + { + BlockOverrun(); + } + } + else + { + char tmp; + last++; + if (last >= limitLast) + { + BlockOverrun(); + } + + tmp = yy[nextSym - 1]; + unzftab[seqToUnseq[tmp]]++; + ll8[last] = seqToUnseq[tmp]; + + /* + This loop is hammered during decompression, + hence the unrolling. + + for (j = nextSym-1; j > 0; j--) yy[j] = yy[j-1]; + */ + + j = nextSym - 1; + for (; j > 3; j -= 4) + { + yy[j] = yy[j - 1]; + yy[j - 1] = yy[j - 2]; + yy[j - 2] = yy[j - 3]; + yy[j - 3] = yy[j - 4]; + } + for (; j > 0; j--) + { + yy[j] = yy[j - 1]; + } + + yy[0] = tmp; + { + int zt, + zn, + zvec, + zj; + if (groupPos == 0) + { + groupNo++; + groupPos = BZip2Constants.G_SIZE; + } + groupPos--; + zt = selector[groupNo]; + zn = minLens[zt]; + zvec = await BsRAsync(zn, cancellationToken).ConfigureAwait(false); + while (zvec > limit[zt][zn]) + { + zn++; + { + { + while (bsLive < 1) + { + int zzi; + int thech = '\0'; + try + { + var readCount = await bsStream + .ReadAsync(singleByte, 0, 1, cancellationToken) + .ConfigureAwait(false); + thech = readCount == 0 ? '\uffff' : singleByte[0]; + } + catch (IOException) + { + CompressedStreamEOF(); + } + if (thech == '\uffff') + { + CompressedStreamEOF(); + } + zzi = thech; + bsBuff = (bsBuff << 8) | (zzi & 0xff); + bsLive += 8; + } + } + zj = (bsBuff >> (bsLive - 1)) & 1; + bsLive--; + } + zvec = (zvec << 1) | zj; + } + nextSym = perm[zt][zvec - basev[zt][zn]]; + } + } + } + } + + private async ValueTask SetupBlockAsync(CancellationToken cancellationToken) + { + Span cftab = stackalloc int[257]; + char ch; + + cftab[0] = 0; + for (i = 1; i <= 256; i++) + { + cftab[i] = unzftab[i - 1]; + } + for (i = 1; i <= 256; i++) + { + cftab[i] += cftab[i - 1]; + } + + for (i = 0; i <= last; i++) + { + ch = ll8[i]; + tt[cftab[ch]] = i; + cftab[ch]++; + } + + tPos = tt[origPtr]; + + count = 0; + i2 = 0; + ch2 = 256; /* not a char and not EOF */ + + if (blockRandomised) + { + rNToGo = 0; + rTPos = 0; + await SetupRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + else + { + SetupNoRandPartA(); + } + } + + private async ValueTask SetupRandPartAAsync(CancellationToken cancellationToken) + { + if (i2 <= last) + { + chPrev = ch2; + ch2 = ll8[tPos]; + tPos = tt[tPos]; + if (rNToGo == 0) + { + rNToGo = BZip2Constants.rNums[rTPos]; + rTPos++; + if (rTPos == 512) + { + rTPos = 0; + } + } + rNToGo--; + ch2 ^= (rNToGo == 1) ? (char)1 : (char)0; + i2++; + + currentChar = ch2; + currentState = RAND_PART_B_STATE; + mCrc.UpdateCRC(ch2); + } + else + { + EndBlock(); + await InitBlockAsync(cancellationToken).ConfigureAwait(false); + await SetupBlockAsync(cancellationToken).ConfigureAwait(false); + } + } + + private async ValueTask SetupNoRandPartAAsync(CancellationToken cancellationToken) + { + if (i2 <= last) + { + chPrev = ch2; + ch2 = ll8[tPos]; + tPos = tt[tPos]; + i2++; + + currentChar = ch2; + currentState = NO_RAND_PART_B_STATE; + mCrc.UpdateCRC(ch2); + } + else + { + EndBlock(); + await InitBlockAsync(cancellationToken).ConfigureAwait(false); + await SetupBlockAsync(cancellationToken).ConfigureAwait(false); + } + } + + private async ValueTask SetupRandPartBAsync(CancellationToken cancellationToken) + { + if (ch2 != chPrev) + { + currentState = RAND_PART_A_STATE; + count = 1; + await SetupRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + else + { + count++; + if (count >= 4) + { + z = ll8[tPos]; + tPos = tt[tPos]; + if (rNToGo == 0) + { + rNToGo = BZip2Constants.rNums[rTPos]; + rTPos++; + if (rTPos == 512) + { + rTPos = 0; + } + } + rNToGo--; + z ^= (char)((rNToGo == 1) ? 1 : 0); + j2 = 0; + currentState = RAND_PART_C_STATE; + SetupRandPartC(); + } + else + { + currentState = RAND_PART_A_STATE; + await SetupRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + } + } + + private async ValueTask SetupRandPartCAsync(CancellationToken cancellationToken) + { + if (j2 < z) + { + currentChar = ch2; + mCrc.UpdateCRC(ch2); + j2++; + } + else + { + currentState = RAND_PART_A_STATE; + i2++; + count = 0; + await SetupRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + } + + private async ValueTask SetupNoRandPartBAsync(CancellationToken cancellationToken) + { + if (ch2 != chPrev) + { + currentState = NO_RAND_PART_A_STATE; + count = 1; + await SetupNoRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + else + { + count++; + if (count >= 4) + { + z = ll8[tPos]; + tPos = tt[tPos]; + currentState = NO_RAND_PART_C_STATE; + j2 = 0; + await SetupNoRandPartCAsync(cancellationToken).ConfigureAwait(false); + } + else + { + currentState = NO_RAND_PART_A_STATE; + await SetupNoRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + } + } + + private async ValueTask SetupNoRandPartCAsync(CancellationToken cancellationToken) + { + if (j2 < z) + { + currentChar = ch2; + mCrc.UpdateCRC(ch2); + j2++; + } + else + { + currentState = NO_RAND_PART_A_STATE; + i2++; + count = 0; + await SetupNoRandPartAAsync(cancellationToken).ConfigureAwait(false); + } + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + var c = -1; + int k; + for (k = 0; k < count; ++k) + { + cancellationToken.ThrowIfCancellationRequested(); + c = await ReadByteAsync(cancellationToken).ConfigureAwait(false); + if (c == -1) + { + break; + } + buffer[k + offset] = (byte)c; + } + return k; + } + + private async ValueTask BsSetStreamAsync(Stream f, CancellationToken cancellationToken) + { + bsStream = f; + bsLive = 0; + bsBuff = 0; + await Task.CompletedTask; + } + + private async ValueTask BsRAsync(int n, CancellationToken cancellationToken) + { + int v; + while (bsLive < n) + { + int zzi; + int thech = '\0'; + var b = ArrayPool.Shared.Rent(1); + try + { + await bsStream.ReadExactAsync(b, 0, 1, cancellationToken); + thech = (char)b[0]; + } + catch (IOException) + { + CompressedStreamEOF(); + } + finally + { + ArrayPool.Shared.Return(b); + } + if (thech == '\uffff') + { + CompressedStreamEOF(); + } + zzi = thech; + bsBuff = (bsBuff << 8) | (zzi & 0xff); + bsLive += 8; + } + + v = (bsBuff >> (bsLive - n)) & ((1 << n) - 1); + bsLive -= n; + return v; + } + + private async ValueTask BsGetUCharAsync(CancellationToken cancellationToken) => + (char)await BsRAsync(8, cancellationToken); + + private async ValueTask BsGetIntVSAsync( + int numBits, + CancellationToken cancellationToken + ) => await BsRAsync(numBits, cancellationToken); + + private async ValueTask BsGetInt32Async(CancellationToken cancellationToken) => + await BsGetintAsync(cancellationToken); + + public static async ValueTask CreateAsync( + Stream zStream, + bool decompressConcatenated, + CancellationToken cancellationToken = default + ) + { + var cbZip2InputStream = new CBZip2InputStream(); + cbZip2InputStream.decompressConcatenated = decompressConcatenated; + cbZip2InputStream.ll8 = null; + cbZip2InputStream.tt = null; + await cbZip2InputStream.BsSetStreamAsync(zStream, cancellationToken); + await cbZip2InputStream.InitializeAsync(true, cancellationToken); + await cbZip2InputStream.InitBlockAsync(cancellationToken); + await cbZip2InputStream.SetupBlockAsync(cancellationToken); + return cbZip2InputStream; + } +} diff --git a/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.cs b/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.cs index e31044089..de7fe0d44 100644 --- a/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.cs +++ b/src/SharpCompress/Compressors/BZip2/CBZip2InputStream.cs @@ -1,6 +1,7 @@ #nullable disable using System; +using System.Buffers; using System.IO; using System.Threading; using System.Threading.Tasks; @@ -40,7 +41,7 @@ namespace SharpCompress.Compressors.BZip2; * start of the BZIP2 stream to make it compatible with other PGP programs. */ -internal class CBZip2InputStream : Stream, IStreamStack +internal partial class CBZip2InputStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -167,8 +168,8 @@ during decompression. storedCombinedCRC; private int computedBlockCRC, computedCombinedCRC; - private readonly bool decompressConcatenated; - private readonly bool leaveOpen; + private bool decompressConcatenated; + private bool leaveOpen; private int i2, count, @@ -182,25 +183,29 @@ during decompression. private char z; private bool isDisposed; - public CBZip2InputStream(Stream zStream, bool decompressConcatenated, bool leaveOpen = false) - { - this.decompressConcatenated = decompressConcatenated; - this.leaveOpen = leaveOpen; - ll8 = null; - tt = null; - BsSetStream(zStream); -#if DEBUG_STREAMS - this.DebugConstruct(typeof(CBZip2InputStream)); -#endif + private CBZip2InputStream() { } - Initialize(true); - InitBlock(); - SetupBlock(); + public static CBZip2InputStream Create( + Stream zStream, + bool decompressConcatenated, + bool leaveOpen + ) + { + var cbZip2InputStream = new CBZip2InputStream(); + cbZip2InputStream.decompressConcatenated = decompressConcatenated; + cbZip2InputStream.leaveOpen = leaveOpen; + cbZip2InputStream.ll8 = null; + cbZip2InputStream.tt = null; + cbZip2InputStream.BsSetStream(zStream); + cbZip2InputStream.Initialize(true); + cbZip2InputStream.InitBlock(); + cbZip2InputStream.SetupBlock(); + return cbZip2InputStream; } protected override void Dispose(bool disposing) { - if (isDisposed) + if (isDisposed || leaveOpen) { return; } @@ -209,10 +214,7 @@ protected override void Dispose(bool disposing) this.DebugDispose(typeof(CBZip2InputStream)); #endif base.Dispose(disposing); - if (!leaveOpen) - { - bsStream?.Dispose(); - } + bsStream?.Dispose(); } internal static int[][] InitIntArray(int n1, int n2) @@ -1137,28 +1139,6 @@ public override int Read(byte[] buffer, int offset, int count) return k; } - public override Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - var c = -1; - int k; - for (k = 0; k < count; ++k) - { - cancellationToken.ThrowIfCancellationRequested(); - c = ReadByte(); - if (c == -1) - { - break; - } - buffer[k + offset] = (byte)c; - } - return Task.FromResult(k); - } - public override long Seek(long offset, SeekOrigin origin) => 0; public override void SetLength(long value) { } diff --git a/src/SharpCompress/Compressors/Deflate/DeflateStream.Async.cs b/src/SharpCompress/Compressors/Deflate/DeflateStream.Async.cs new file mode 100644 index 000000000..a606e2a7f --- /dev/null +++ b/src/SharpCompress/Compressors/Deflate/DeflateStream.Async.cs @@ -0,0 +1,94 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Deflate; + +public partial class DeflateStream +{ +#if !LEGACY_DOTNET + public override async ValueTask DisposeAsync() + { + if (!_disposed) + { + if (!_leaveOpen) + { + await _baseStream.DisposeAsync().ConfigureAwait(false); + } + _disposed = true; + } + await base.DisposeAsync().ConfigureAwait(false); + } +#endif + + public override async Task FlushAsync(CancellationToken cancellationToken) + { + if (_disposed) + { + throw new ObjectDisposedException("DeflateStream"); + } + await _baseStream.FlushAsync(cancellationToken).ConfigureAwait(false); + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException("DeflateStream"); + } + return await _baseStream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException("DeflateStream"); + } + return await _baseStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + } +#endif + + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException("DeflateStream"); + } + await _baseStream + .WriteAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + public override async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException("DeflateStream"); + } + await _baseStream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); + } +#endif +} diff --git a/src/SharpCompress/Compressors/Deflate/DeflateStream.cs b/src/SharpCompress/Compressors/Deflate/DeflateStream.cs index f11ea41b9..3d54174ee 100644 --- a/src/SharpCompress/Compressors/Deflate/DeflateStream.cs +++ b/src/SharpCompress/Compressors/Deflate/DeflateStream.cs @@ -33,7 +33,7 @@ namespace SharpCompress.Compressors.Deflate; -public class DeflateStream : Stream, IStreamStack +public partial class DeflateStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -57,19 +57,31 @@ void IStreamStack.SetPosition(long position) { } private readonly ZlibBaseStream _baseStream; private bool _disposed; + private readonly bool _leaveOpen; public DeflateStream( Stream stream, CompressionMode mode, CompressionLevel level = CompressionLevel.Default, Encoding? forceEncoding = null + ) + : this(stream, mode, level, leaveOpen: false, forceEncoding) { } + + public DeflateStream( + Stream stream, + CompressionMode mode, + CompressionLevel level, + bool leaveOpen, + Encoding? forceEncoding = null ) { + _leaveOpen = leaveOpen; _baseStream = new ZlibBaseStream( stream, mode, level, ZlibStreamFlavor.DEFLATE, + leaveOpen, forceEncoding ); @@ -265,7 +277,7 @@ protected override void Dispose(bool disposing) #if DEBUG_STREAMS this.DebugDispose(typeof(DeflateStream)); #endif - if (disposing) + if (disposing && !_leaveOpen) { _baseStream?.Dispose(); } @@ -290,34 +302,6 @@ public override void Flush() _baseStream.Flush(); } - public override async Task FlushAsync(CancellationToken cancellationToken) - { - if (_disposed) - { - throw new ObjectDisposedException("DeflateStream"); - } - await _baseStream.FlushAsync(cancellationToken).ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask DisposeAsync() - { - if (_disposed) - { - return; - } - _disposed = true; - if (_baseStream != null) - { - await _baseStream.DisposeAsync().ConfigureAwait(false); - } -#if DEBUG_STREAMS - this.DebugDispose(typeof(DeflateStream)); -#endif - await base.DisposeAsync().ConfigureAwait(false); - } -#endif - /// /// Read data from the stream. /// @@ -354,36 +338,6 @@ public override int Read(byte[] buffer, int offset, int count) return _baseStream.Read(buffer, offset, count); } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_disposed) - { - throw new ObjectDisposedException("DeflateStream"); - } - return await _baseStream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - if (_disposed) - { - throw new ObjectDisposedException("DeflateStream"); - } - return await _baseStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - } -#endif - public override int ReadByte() { if (_disposed) @@ -445,36 +399,6 @@ public override void Write(byte[] buffer, int offset, int count) _baseStream.Write(buffer, offset, count); } - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_disposed) - { - throw new ObjectDisposedException("DeflateStream"); - } - await _baseStream - .WriteAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) - { - if (_disposed) - { - throw new ObjectDisposedException("DeflateStream"); - } - await _baseStream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); - } -#endif - public override void WriteByte(byte value) { if (_disposed) diff --git a/src/SharpCompress/Compressors/Deflate/GZipStream.Async.cs b/src/SharpCompress/Compressors/Deflate/GZipStream.Async.cs new file mode 100644 index 000000000..270421bfd --- /dev/null +++ b/src/SharpCompress/Compressors/Deflate/GZipStream.Async.cs @@ -0,0 +1,135 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Deflate; + +public partial class GZipStream +{ + public override async Task FlushAsync(CancellationToken cancellationToken) + { + if (_disposed) + { + throw new ObjectDisposedException("GZipStream"); + } + await BaseStream.FlushAsync(cancellationToken).ConfigureAwait(false); + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException("GZipStream"); + } + var n = await BaseStream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + + if (!_firstReadDone) + { + _firstReadDone = true; + FileName = BaseStream._GzipFileName; + Comment = BaseStream._GzipComment; + LastModified = BaseStream._GzipMtime; + } + return n; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException("GZipStream"); + } + var n = await BaseStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + + if (!_firstReadDone) + { + _firstReadDone = true; + FileName = BaseStream._GzipFileName; + Comment = BaseStream._GzipComment; + LastModified = BaseStream._GzipMtime; + } + return n; + } +#endif + + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException("GZipStream"); + } + if (BaseStream._streamMode == ZlibBaseStream.StreamMode.Undefined) + { + if (BaseStream._wantCompress) + { + // first write in compression, therefore, emit the GZIP header + _headerByteCount = EmitHeader(); + } + else + { + throw new InvalidOperationException(); + } + } + + await BaseStream.WriteAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + public override async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException("GZipStream"); + } + if (BaseStream._streamMode == ZlibBaseStream.StreamMode.Undefined) + { + if (BaseStream._wantCompress) + { + // first write in compression, therefore, emit the GZIP header + _headerByteCount = EmitHeader(); + } + else + { + throw new InvalidOperationException(); + } + } + + await BaseStream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); + } + + public override async ValueTask DisposeAsync() + { + if (_disposed) + { + return; + } + _disposed = true; + if (BaseStream != null) + { + await BaseStream.DisposeAsync().ConfigureAwait(false); + } + await base.DisposeAsync().ConfigureAwait(false); + } +#endif +} diff --git a/src/SharpCompress/Compressors/Deflate/GZipStream.cs b/src/SharpCompress/Compressors/Deflate/GZipStream.cs index aceacb289..cccd63f4b 100644 --- a/src/SharpCompress/Compressors/Deflate/GZipStream.cs +++ b/src/SharpCompress/Compressors/Deflate/GZipStream.cs @@ -36,7 +36,7 @@ namespace SharpCompress.Compressors.Deflate; -public class GZipStream : Stream, IStreamStack +public partial class GZipStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -259,15 +259,6 @@ public override void Flush() BaseStream.Flush(); } - public override async Task FlushAsync(CancellationToken cancellationToken) - { - if (_disposed) - { - throw new ObjectDisposedException("GZipStream"); - } - await BaseStream.FlushAsync(cancellationToken).ConfigureAwait(false); - } - /// /// Read and decompress data from the source stream. /// @@ -320,54 +311,6 @@ public override int Read(byte[] buffer, int offset, int count) return n; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_disposed) - { - throw new ObjectDisposedException("GZipStream"); - } - var n = await BaseStream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - - if (!_firstReadDone) - { - _firstReadDone = true; - FileName = BaseStream._GzipFileName; - Comment = BaseStream._GzipComment; - LastModified = BaseStream._GzipMtime; - } - return n; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - if (_disposed) - { - throw new ObjectDisposedException("GZipStream"); - } - var n = await BaseStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - - if (!_firstReadDone) - { - _firstReadDone = true; - FileName = BaseStream._GzipFileName; - Comment = BaseStream._GzipComment; - LastModified = BaseStream._GzipMtime; - } - return n; - } -#endif - /// /// Calling this method always throws a . /// @@ -427,77 +370,6 @@ public override void Write(byte[] buffer, int offset, int count) BaseStream.Write(buffer, offset, count); } - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_disposed) - { - throw new ObjectDisposedException("GZipStream"); - } - if (BaseStream._streamMode == ZlibBaseStream.StreamMode.Undefined) - { - if (BaseStream._wantCompress) - { - // first write in compression, therefore, emit the GZIP header - _headerByteCount = EmitHeader(); - } - else - { - throw new InvalidOperationException(); - } - } - - await BaseStream.WriteAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) - { - if (_disposed) - { - throw new ObjectDisposedException("GZipStream"); - } - if (BaseStream._streamMode == ZlibBaseStream.StreamMode.Undefined) - { - if (BaseStream._wantCompress) - { - // first write in compression, therefore, emit the GZIP header - _headerByteCount = EmitHeader(); - } - else - { - throw new InvalidOperationException(); - } - } - - await BaseStream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); - } - - public override async ValueTask DisposeAsync() - { - if (_disposed) - { - return; - } - _disposed = true; - if (BaseStream != null) - { - await BaseStream.DisposeAsync().ConfigureAwait(false); - } -#if DEBUG_STREAMS - this.DebugDispose(typeof(GZipStream)); -#endif - await base.DisposeAsync().ConfigureAwait(false); - } -#endif - #endregion Stream methods public string? Comment diff --git a/src/SharpCompress/Compressors/Deflate/ZlibBaseStream.cs b/src/SharpCompress/Compressors/Deflate/ZlibBaseStream.cs index 5099de540..9b2f467c0 100644 --- a/src/SharpCompress/Compressors/Deflate/ZlibBaseStream.cs +++ b/src/SharpCompress/Compressors/Deflate/ZlibBaseStream.cs @@ -89,6 +89,7 @@ void IStreamStack.SetPosition(long position) { } protected internal int _gzipHeaderByteCount; private readonly Encoding _encoding; + private readonly bool _leaveOpen; internal int Crc32 => crc?.Crc32Result ?? 0; @@ -98,9 +99,20 @@ public ZlibBaseStream( CompressionLevel level, ZlibStreamFlavor flavor, Encoding encoding + ) + : this(stream, compressionMode, level, flavor, leaveOpen: false, encoding) { } + + public ZlibBaseStream( + Stream stream, + CompressionMode compressionMode, + CompressionLevel level, + ZlibStreamFlavor flavor, + bool leaveOpen, + Encoding encoding ) { _flushMode = FlushType.None; + _leaveOpen = leaveOpen; //this._workingBuffer = new byte[WORKING_BUFFER_SIZE_DEFAULT]; _stream = stream; @@ -546,7 +558,10 @@ protected override void Dispose(bool disposing) finally { end(); - _stream?.Dispose(); + if (!_leaveOpen) + { + _stream?.Dispose(); + } _stream = null; } } @@ -577,7 +592,10 @@ public override async ValueTask DisposeAsync() end(); if (_stream != null) { - await _stream.DisposeAsync().ConfigureAwait(false); + if (!_leaveOpen) + { + await _stream.DisposeAsync().ConfigureAwait(false); + } _stream = null; } } diff --git a/src/SharpCompress/Compressors/Deflate/ZlibStream.Async.cs b/src/SharpCompress/Compressors/Deflate/ZlibStream.Async.cs new file mode 100644 index 000000000..0dee21976 --- /dev/null +++ b/src/SharpCompress/Compressors/Deflate/ZlibStream.Async.cs @@ -0,0 +1,95 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Deflate; + +public partial class ZlibStream +{ + public override async Task FlushAsync(CancellationToken cancellationToken) + { + if (_disposed) + { + throw new ObjectDisposedException("ZlibStream"); + } + await _baseStream.FlushAsync(cancellationToken).ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + public override async ValueTask DisposeAsync() + { + if (_disposed) + { + return; + } + _disposed = true; + if (_baseStream != null) + { + await _baseStream.DisposeAsync().ConfigureAwait(false); + } + await base.DisposeAsync().ConfigureAwait(false); + } +#endif + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException("ZlibStream"); + } + return await _baseStream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException("ZlibStream"); + } + return await _baseStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + } +#endif + + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_disposed) + { + throw new ObjectDisposedException("ZlibStream"); + } + await _baseStream + .WriteAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + public override async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) + { + if (_disposed) + { + throw new ObjectDisposedException("ZlibStream"); + } + await _baseStream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); + } +#endif +} diff --git a/src/SharpCompress/Compressors/Deflate/ZlibStream.cs b/src/SharpCompress/Compressors/Deflate/ZlibStream.cs index d94ca210c..971fb71c7 100644 --- a/src/SharpCompress/Compressors/Deflate/ZlibStream.cs +++ b/src/SharpCompress/Compressors/Deflate/ZlibStream.cs @@ -34,7 +34,7 @@ namespace SharpCompress.Compressors.Deflate; -public class ZlibStream : Stream, IStreamStack +public partial class ZlibStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -268,34 +268,6 @@ public override void Flush() _baseStream.Flush(); } - public override async Task FlushAsync(CancellationToken cancellationToken) - { - if (_disposed) - { - throw new ObjectDisposedException("ZlibStream"); - } - await _baseStream.FlushAsync(cancellationToken).ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask DisposeAsync() - { - if (_disposed) - { - return; - } - _disposed = true; - if (_baseStream != null) - { - await _baseStream.DisposeAsync().ConfigureAwait(false); - } -#if DEBUG_STREAMS - this.DebugDispose(typeof(ZlibStream)); -#endif - await base.DisposeAsync().ConfigureAwait(false); - } -#endif - /// /// Read data from the stream. /// @@ -331,36 +303,6 @@ public override int Read(byte[] buffer, int offset, int count) return _baseStream.Read(buffer, offset, count); } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_disposed) - { - throw new ObjectDisposedException("ZlibStream"); - } - return await _baseStream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - if (_disposed) - { - throw new ObjectDisposedException("ZlibStream"); - } - return await _baseStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - } -#endif - public override int ReadByte() { if (_disposed) @@ -415,36 +357,6 @@ public override void Write(byte[] buffer, int offset, int count) _baseStream.Write(buffer, offset, count); } - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_disposed) - { - throw new ObjectDisposedException("ZlibStream"); - } - await _baseStream - .WriteAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - public override async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) - { - if (_disposed) - { - throw new ObjectDisposedException("ZlibStream"); - } - await _baseStream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); - } -#endif - public override void WriteByte(byte value) { if (_disposed) diff --git a/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.Async.cs b/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.Async.cs new file mode 100644 index 000000000..8182cc578 --- /dev/null +++ b/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.Async.cs @@ -0,0 +1,113 @@ +using System; +using System.Diagnostics; +using System.IO; +using System.Runtime.InteropServices; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Deflate64; + +public sealed partial class Deflate64Stream +{ + public override async Task ReadAsync( + byte[] array, + int offset, + int count, + CancellationToken cancellationToken + ) + { + ValidateParameters(array, offset, count); + EnsureNotDisposed(); + + int bytesRead; + var currentOffset = offset; + var remainingCount = count; + + while (true) + { + bytesRead = _inflater.Inflate(array, currentOffset, remainingCount); + currentOffset += bytesRead; + remainingCount -= bytesRead; + + if (remainingCount == 0) + { + break; + } + + if (_inflater.Finished()) + { + // if we finished decompressing, we can't have anything left in the outputwindow. + Debug.Assert( + _inflater.AvailableOutput == 0, + "We should have copied all stuff out!" + ); + break; + } + + var bytes = await _stream + .ReadAsync(_buffer, 0, _buffer.Length, cancellationToken) + .ConfigureAwait(false); + if (bytes <= 0) + { + break; + } + else if (bytes > _buffer.Length) + { + // The stream is either malicious or poorly implemented and returned a number of + // bytes larger than the buffer supplied to it. + throw new InvalidFormatException("Deflate64: invalid data"); + } + + _inflater.SetInput(_buffer, 0, bytes); + } + + return count - remainingCount; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + EnsureNotDisposed(); + + // InflaterManaged doesn't have a Span-based Inflate method, so we need to work with arrays + // For large buffers, we could rent from ArrayPool, but for simplicity we'll use the buffer's array if available + if ( + System.Runtime.InteropServices.MemoryMarshal.TryGetArray( + buffer, + out var arraySegment + ) + ) + { + // Fast path: the Memory is backed by an array + return await ReadAsync( + arraySegment.Array!, + arraySegment.Offset, + arraySegment.Count, + cancellationToken + ) + .ConfigureAwait(false); + } + else + { + // Slow path: rent a temporary array + var tempBuffer = System.Buffers.ArrayPool.Shared.Rent(buffer.Length); + try + { + var bytesRead = await ReadAsync(tempBuffer, 0, buffer.Length, cancellationToken) + .ConfigureAwait(false); + tempBuffer.AsMemory(0, bytesRead).CopyTo(buffer); + return bytesRead; + } + finally + { + System.Buffers.ArrayPool.Shared.Return(tempBuffer); + } + } + } +#endif +} diff --git a/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.cs b/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.cs index 083f0380a..e028e58cb 100644 --- a/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.cs +++ b/src/SharpCompress/Compressors/Deflate64/Deflate64Stream.cs @@ -14,7 +14,7 @@ namespace SharpCompress.Compressors.Deflate64; -public sealed class Deflate64Stream : Stream, IStreamStack +public sealed partial class Deflate64Stream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -145,106 +145,6 @@ public override int Read(byte[] array, int offset, int count) return count - remainingCount; } - public override async Task ReadAsync( - byte[] array, - int offset, - int count, - CancellationToken cancellationToken - ) - { - ValidateParameters(array, offset, count); - EnsureNotDisposed(); - - int bytesRead; - var currentOffset = offset; - var remainingCount = count; - - while (true) - { - bytesRead = _inflater.Inflate(array, currentOffset, remainingCount); - currentOffset += bytesRead; - remainingCount -= bytesRead; - - if (remainingCount == 0) - { - break; - } - - if (_inflater.Finished()) - { - // if we finished decompressing, we can't have anything left in the outputwindow. - Debug.Assert( - _inflater.AvailableOutput == 0, - "We should have copied all stuff out!" - ); - break; - } - - var bytes = await _stream - .ReadAsync(_buffer, 0, _buffer.Length, cancellationToken) - .ConfigureAwait(false); - if (bytes <= 0) - { - break; - } - else if (bytes > _buffer.Length) - { - // The stream is either malicious or poorly implemented and returned a number of - // bytes larger than the buffer supplied to it. - throw new InvalidFormatException("Deflate64: invalid data"); - } - - _inflater.SetInput(_buffer, 0, bytes); - } - - return count - remainingCount; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - EnsureNotDisposed(); - - // InflaterManaged doesn't have a Span-based Inflate method, so we need to work with arrays - // For large buffers, we could rent from ArrayPool, but for simplicity we'll use the buffer's array if available - if ( - System.Runtime.InteropServices.MemoryMarshal.TryGetArray( - buffer, - out var arraySegment - ) - ) - { - // Fast path: the Memory is backed by an array - return await ReadAsync( - arraySegment.Array!, - arraySegment.Offset, - arraySegment.Count, - cancellationToken - ) - .ConfigureAwait(false); - } - else - { - // Slow path: rent a temporary array - var tempBuffer = System.Buffers.ArrayPool.Shared.Rent(buffer.Length); - try - { - var bytesRead = await ReadAsync(tempBuffer, 0, buffer.Length, cancellationToken) - .ConfigureAwait(false); - tempBuffer.AsMemory(0, bytesRead).CopyTo(buffer); - return bytesRead; - } - finally - { - System.Buffers.ArrayPool.Shared.Return(tempBuffer); - } - } - } -#endif - private void ValidateParameters(byte[] array, int offset, int count) { if (array is null) diff --git a/src/SharpCompress/Compressors/Explode/ExplodeStream.Async.cs b/src/SharpCompress/Compressors/Explode/ExplodeStream.Async.cs new file mode 100644 index 000000000..af2805e2f --- /dev/null +++ b/src/SharpCompress/Compressors/Explode/ExplodeStream.Async.cs @@ -0,0 +1,363 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Zip.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Explode; + +public partial class ExplodeStream +{ + internal static async ValueTask CreateAsync( + Stream inStr, + long compressedSize, + long uncompressedSize, + HeaderFlags generalPurposeBitFlag, + CancellationToken cancellationToken = default + ) + { + var ex = new ExplodeStream(inStr, compressedSize, uncompressedSize, generalPurposeBitFlag); + await ex.explode_SetTables_async(cancellationToken).ConfigureAwait(false); + ex.explode_var_init(); + return ex; + } + + private async Task get_tree_async( + int[] arrBitLengths, + int numberExpected, + CancellationToken cancellationToken + ) + { + int inIndex = (await ReadSingleByteAsync(cancellationToken).ConfigureAwait(false)) + 1; + int outIndex = 0; + do + { + int nextByte = await ReadSingleByteAsync(cancellationToken).ConfigureAwait(false); + int bitLengthOfCodes = (nextByte & 0xf) + 1; + int numOfCodes = ((nextByte & 0xf0) >> 4) + 1; + if (outIndex + numOfCodes > numberExpected) + { + return 4; + } + + do + { + arrBitLengths[outIndex++] = bitLengthOfCodes; + } while ((--numOfCodes) != 0); + } while ((--inIndex) != 0); + + return outIndex != numberExpected ? 4 : 0; + } + + private async Task ReadSingleByteAsync(CancellationToken cancellationToken) + { + var buffer = new byte[1]; + int bytesRead = await inStream + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (bytesRead == 0) + { + return -1; + } + return buffer[0]; + } + + private async Task explode_SetTables_async(CancellationToken cancellationToken) + { + int returnCode; + int[] arrBitLengthsForCodes = new int[256]; + + bitsForLiteralCodeTable = 0; + bitsForLengthCodeTable = 7; + bitsForDistanceCodeTable = (compressedSize) > 200000 ? 8 : 7; + + if ((generalPurposeBitFlag & HeaderFlags.Bit2) != 0) + { + bitsForLiteralCodeTable = 9; + if ( + ( + returnCode = await get_tree_async(arrBitLengthsForCodes, 256, cancellationToken) + .ConfigureAwait(false) + ) != 0 + ) + { + return returnCode; + } + + if ( + ( + returnCode = HuftTree.huftbuid( + arrBitLengthsForCodes, + 256, + 256, + [], + [], + out hufLiteralCodeTable, + ref bitsForLiteralCodeTable + ) + ) != 0 + ) + { + return returnCode; + } + + if ( + ( + returnCode = await get_tree_async(arrBitLengthsForCodes, 64, cancellationToken) + .ConfigureAwait(false) + ) != 0 + ) + { + return returnCode; + } + + if ( + ( + returnCode = HuftTree.huftbuid( + arrBitLengthsForCodes, + 64, + 0, + cplen3, + extra, + out hufLengthCodeTable, + ref bitsForLengthCodeTable + ) + ) != 0 + ) + { + return returnCode; + } + } + else + { + if ( + ( + returnCode = await get_tree_async(arrBitLengthsForCodes, 64, cancellationToken) + .ConfigureAwait(false) + ) != 0 + ) + { + return returnCode; + } + + hufLiteralCodeTable = null; + + if ( + ( + returnCode = HuftTree.huftbuid( + arrBitLengthsForCodes, + 64, + 0, + cplen2, + extra, + out hufLengthCodeTable, + ref bitsForLengthCodeTable + ) + ) != 0 + ) + { + return returnCode; + } + } + + if ( + ( + returnCode = await get_tree_async(arrBitLengthsForCodes, 64, cancellationToken) + .ConfigureAwait(false) + ) != 0 + ) + { + return (int)returnCode; + } + + if ((generalPurposeBitFlag & HeaderFlags.Bit1) != 0) + { + numOfUncodedLowerDistanceBits = 7; + returnCode = HuftTree.huftbuid( + arrBitLengthsForCodes, + 64, + 0, + cpdist8, + extra, + out hufDistanceCodeTable, + ref bitsForDistanceCodeTable + ); + } + else + { + numOfUncodedLowerDistanceBits = 6; + returnCode = HuftTree.huftbuid( + arrBitLengthsForCodes, + 64, + 0, + cpdist4, + extra, + out hufDistanceCodeTable, + ref bitsForDistanceCodeTable + ); + } + + return returnCode; + } + + private async Task NeedBitsAsync(int numberOfBits, CancellationToken cancellationToken) + { + while (bitBufferCount < (numberOfBits)) + { + int byteRead = await ReadSingleByteAsync(cancellationToken).ConfigureAwait(false); + bitBuffer |= (uint)byteRead << bitBufferCount; + bitBufferCount += 8; + } + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + int countIndex = 0; + while (countIndex < count && outBytesCount < unCompressedSize) + { + if (length == 0) + { + await NeedBitsAsync(1, cancellationToken).ConfigureAwait(false); + bool literal = (bitBuffer & 1) == 1; + DumpBits(1); + + huftNode huftPointer; + if (literal) + { + byte nextByte; + if (hufLiteralCodeTable != null) + { + if ( + DecodeHuft( + hufLiteralCodeTable, + bitsForLiteralCodeTable, + maskForLiteralCodeTable, + out huftPointer, + out _ + ) != 0 + ) + { + throw new Exception("Error decoding literal value"); + } + + nextByte = (byte)huftPointer.Value; + } + else + { + await NeedBitsAsync(8, cancellationToken).ConfigureAwait(false); + nextByte = (byte)bitBuffer; + DumpBits(8); + } + + buffer[offset + (countIndex++)] = nextByte; + windowsBuffer[windowIndex++] = nextByte; + outBytesCount++; + + if (windowIndex == WSIZE) + { + windowIndex = 0; + } + + continue; + } + + await NeedBitsAsync(numOfUncodedLowerDistanceBits, cancellationToken) + .ConfigureAwait(false); + distance = (int)(bitBuffer & maskForDistanceLowBits); + DumpBits(numOfUncodedLowerDistanceBits); + + if ( + DecodeHuft( + hufDistanceCodeTable, + bitsForDistanceCodeTable, + maskForDistanceCodeTable, + out huftPointer, + out _ + ) != 0 + ) + { + throw new Exception("Error decoding distance high bits"); + } + + distance = windowIndex - (distance + huftPointer.Value); + + if ( + DecodeHuft( + hufLengthCodeTable, + bitsForLengthCodeTable, + maskForLengthCodeTable, + out huftPointer, + out int extraBitLength + ) != 0 + ) + { + throw new Exception("Error decoding coded length"); + } + + length = huftPointer.Value; + + if (extraBitLength != 0) + { + await NeedBitsAsync(8, cancellationToken).ConfigureAwait(false); + length += (int)(bitBuffer & 0xff); + DumpBits(8); + } + + if (length > (unCompressedSize - outBytesCount)) + { + length = (int)(unCompressedSize - outBytesCount); + } + + distance &= WSIZE - 1; + } + + while (length != 0 && countIndex < count) + { + byte nextByte = windowsBuffer[distance++]; + buffer[offset + (countIndex++)] = nextByte; + windowsBuffer[windowIndex++] = nextByte; + outBytesCount++; + + if (distance == WSIZE) + { + distance = 0; + } + + if (windowIndex == WSIZE) + { + windowIndex = 0; + } + + length--; + } + } + + return countIndex; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + if (buffer.IsEmpty || outBytesCount >= unCompressedSize) + { + return 0; + } + + byte[] arrayBuffer = new byte[buffer.Length]; + int result = await ReadAsync(arrayBuffer, 0, arrayBuffer.Length, cancellationToken) + .ConfigureAwait(false); + arrayBuffer.AsMemory(0, result).CopyTo(buffer); + return result; + } +#endif +} diff --git a/src/SharpCompress/Compressors/Explode/ExplodeStream.cs b/src/SharpCompress/Compressors/Explode/ExplodeStream.cs index 4b34b5055..59bac5258 100644 --- a/src/SharpCompress/Compressors/Explode/ExplodeStream.cs +++ b/src/SharpCompress/Compressors/Explode/ExplodeStream.cs @@ -5,7 +5,7 @@ namespace SharpCompress.Compressors.Explode; -public class ExplodeStream : Stream, IStreamStack +public partial class ExplodeStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -58,7 +58,7 @@ void IStreamStack.SetPosition(long position) { } private int distance; private int length; - internal ExplodeStream( + private ExplodeStream( Stream inStr, long compressedSize, long uncompressedSize, @@ -72,10 +72,20 @@ HeaderFlags generalPurposeBitFlag this.compressedSize = (int)compressedSize; unCompressedSize = (long)uncompressedSize; this.generalPurposeBitFlag = generalPurposeBitFlag; - explode_SetTables(); - windowsBuffer = new byte[WSIZE]; - explode_var_init(); + } + + internal static ExplodeStream Create( + Stream inStr, + long compressedSize, + long uncompressedSize, + HeaderFlags generalPurposeBitFlag + ) + { + var ex = new ExplodeStream(inStr, compressedSize, uncompressedSize, generalPurposeBitFlag); + ex.explode_SetTables(); + ex.explode_var_init(); + return ex; } protected override void Dispose(bool disposing) @@ -492,7 +502,10 @@ Otherwise zero is returned. */ int bitLengthOfCodes = (nextByte & 0xf) + 1; /* bits in code (1..16) */ int numOfCodes = ((nextByte & 0xf0) >> 4) + 1; /* codes with those bits (1..16) */ if (outIndex + numOfCodes > numberExpected) + { return 4; /* don't overflow arrBitLengths[] */ + } + do { arrBitLengths[outIndex++] = bitLengthOfCodes; @@ -516,7 +529,9 @@ private int explode_SetTables() { bitsForLiteralCodeTable = 9; /* base table size for literals */ if ((returnCode = get_tree(arrBitLengthsForCodes, 256)) != 0) + { return returnCode; + } if ( ( @@ -531,10 +546,14 @@ ref bitsForLiteralCodeTable ) ) != 0 ) + { return returnCode; + } if ((returnCode = get_tree(arrBitLengthsForCodes, 64)) != 0) + { return returnCode; + } if ( ( @@ -549,13 +568,17 @@ ref bitsForLengthCodeTable ) ) != 0 ) + { return returnCode; + } } else /* No literal tree--minimum match length is 2 */ { if ((returnCode = get_tree(arrBitLengthsForCodes, 64)) != 0) + { return returnCode; + } hufLiteralCodeTable = null; @@ -572,11 +595,15 @@ ref bitsForLengthCodeTable ) ) != 0 ) + { return returnCode; + } } if ((returnCode = get_tree(arrBitLengthsForCodes, 64)) != 0) + { return (int)returnCode; + } if ((generalPurposeBitFlag & HeaderFlags.Bit1) != 0) /* true if 8K */ { @@ -635,9 +662,14 @@ int DecodeHuft(huftNode[] htab, int bits, uint mask, out huftNode huftPointer, o DumpBits(huftPointer.NumberOfBitsUsed); e = huftPointer.NumberOfExtraBits; if (e <= 32) + { break; + } + if (e == INVALID_CODE) + { return 1; + } e &= 31; NeedBits(e); @@ -690,7 +722,9 @@ public override int Read(byte[] buffer, int offset, int count) out _ ) != 0 ) + { throw new Exception("Error decoding literal value"); + } nextByte = (byte)huftPointer.Value; } @@ -706,7 +740,9 @@ out _ outBytesCount++; if (windowIndex == WSIZE) + { windowIndex = 0; + } continue; } @@ -725,7 +761,9 @@ out _ out _ ) != 0 ) + { throw new Exception("Error decoding distance high bits"); + } distance = windowIndex - (distance + huftPointer.Value); /* construct offset */ @@ -739,7 +777,9 @@ out _ out int extraBitLength ) != 0 ) + { throw new Exception("Error decoding coded length"); + } length = huftPointer.Value; @@ -751,7 +791,9 @@ out int extraBitLength } if (length > (unCompressedSize - outBytesCount)) + { length = (int)(unCompressedSize - outBytesCount); + } distance &= WSIZE - 1; } @@ -764,10 +806,14 @@ out int extraBitLength outBytesCount++; if (distance == WSIZE) + { distance = 0; + } if (windowIndex == WSIZE) + { windowIndex = 0; + } length--; } diff --git a/src/SharpCompress/Compressors/Explode/HuftTree.cs b/src/SharpCompress/Compressors/Explode/HuftTree.cs index d216cfc79..050947575 100644 --- a/src/SharpCompress/Compressors/Explode/HuftTree.cs +++ b/src/SharpCompress/Compressors/Explode/HuftTree.cs @@ -46,7 +46,9 @@ so that no bits beyond that code are fetched when that code is int[] arrBitLengthCount = new int[BMAX + 1]; for (int i = 0; i < BMAX + 1; i++) + { arrBitLengthCount[i] = 0; + } int pIndex = 0; int counterCurrentCode = numberOfCodes; @@ -64,20 +66,32 @@ so that no bits beyond that code are fetched when that code is /* Find minimum and maximum length, bound *outBitsForTable by those */ int counter; for (counter = 1; counter <= BMAX; counter++) + { if (arrBitLengthCount[counter] != 0) + { break; + } + } int numberOfBitsInCurrentCode = counter; /* minimum code length */ if (outBitsForTable < counter) + { outBitsForTable = counter; + } for (counterCurrentCode = BMAX; counterCurrentCode != 0; counterCurrentCode--) + { if (arrBitLengthCount[counterCurrentCode] != 0) + { break; + } + } int maximumCodeLength = counterCurrentCode; /* maximum code length */ if (outBitsForTable > counterCurrentCode) + { outBitsForTable = counterCurrentCode; + } /* Adjust last length count to fill out codes, if needed */ int numberOfDummyCodesAdded; @@ -86,11 +100,17 @@ so that no bits beyond that code are fetched when that code is counter < counterCurrentCode; counter++, numberOfDummyCodesAdded <<= 1 ) + { if ((numberOfDummyCodesAdded -= arrBitLengthCount[counter]) < 0) + { return 2; /* bad input: more codes than bits */ + } + } if ((numberOfDummyCodesAdded -= arrBitLengthCount[counterCurrentCode]) < 0) + { return 2; + } arrBitLengthCount[counterCurrentCode] += numberOfDummyCodesAdded; @@ -108,14 +128,18 @@ so that no bits beyond that code are fetched when that code is /* Make a table of values in order of bit lengths */ int[] arrValuesInOrderOfBitLength = new int[N_MAX]; for (int i = 0; i < N_MAX; i++) + { arrValuesInOrderOfBitLength[i] = 0; + } pIndex = 0; counterCurrentCode = 0; do { if ((counter = arrBitLengthForCodes[pIndex++]) != 0) + { arrValuesInOrderOfBitLength[bitOffset[counter]++] = counterCurrentCode; + } } while (++counterCurrentCode < numberOfCodes); numberOfCodes = bitOffset[maximumCodeLength]; /* set numberOfCodes to length of v */ @@ -165,7 +189,10 @@ so that no bits beyond that code are fetched when that code is while (++counter < numberOfEntriesInCurrentTable) /* try smaller tables up to z bits */ { if ((fBitCounter1 <<= 1) <= arrBitLengthCount[++xIndex]) + { break; /* enough codes to use up j bits */ + } + fBitCounter1 -= arrBitLengthCount[xIndex]; /* else deduct codes from patterns */ } } @@ -173,7 +200,9 @@ so that no bits beyond that code are fetched when that code is bitsBeforeThisTable + counter > lengthOfEOBcode && bitsBeforeThisTable < lengthOfEOBcode ) + { counter = lengthOfEOBcode - bitsBeforeThisTable; /* make EOB code end at table */ + } numberOfEntriesInCurrentTable = 1 << counter; /* table entries for j-bit table */ arrLX[stackOfBitsPerTable + tableLevel] = counter; /* set table size in stack */ @@ -216,7 +245,9 @@ so that no bits beyond that code are fetched when that code is }; if (pIndex >= numberOfCodes) + { vHuft1.NumberOfExtraBits = INVALID_CODE; /* out of values--invalid code */ + } else if (arrValuesInOrderOfBitLength[pIndex] < numberOfSimpleValueCodes) { vHuft1.NumberOfExtraBits = ( @@ -241,7 +272,9 @@ so that no bits beyond that code are fetched when that code is counter < numberOfEntriesInCurrentTable; counter += fBitCounter2 ) + { pointerToCurrentTable[counter] = vHuft1; + } /* backwards increment the k-bit code i */ for ( @@ -249,14 +282,19 @@ so that no bits beyond that code are fetched when that code is (counterCurrentCode & counter) != 0; counter >>= 1 ) + { counterCurrentCode ^= counter; + } + counterCurrentCode ^= counter; /* backup over finished tables */ while ( (counterCurrentCode & ((1 << bitsBeforeThisTable) - 1)) != bitOffset[tableLevel] ) + { bitsBeforeThisTable -= arrLX[stackOfBitsPerTable + (--tableLevel)]; + } } } diff --git a/src/SharpCompress/Compressors/Filters/BCJFilterARM64.cs b/src/SharpCompress/Compressors/Filters/BCJFilterARM64.cs index 24f5ab177..c701a5b57 100644 --- a/src/SharpCompress/Compressors/Filters/BCJFilterARM64.cs +++ b/src/SharpCompress/Compressors/Filters/BCJFilterARM64.cs @@ -30,7 +30,9 @@ protected override int Transform(byte[] buffer, int offset, int count) pc >>= 2; if (!_isEncoder) + { pc = 0U - pc; + } instr |= (src + pc) & 0x03FFFFFF; BinaryPrimitives.WriteUInt32LittleEndian(new Span(buffer, i, 4), instr); @@ -40,13 +42,17 @@ protected override int Transform(byte[] buffer, int offset, int count) uint src = ((instr >> 29) & 3) | ((instr >> 3) & 0x001FFFFC); if (((src + 0x00020000) & 0x001C0000) != 0) + { continue; + } instr &= 0x9000001F; pc >>= 12; if (!_isEncoder) + { pc = 0U - pc; + } uint dest = src + pc; instr |= (dest & 3) << 29; diff --git a/src/SharpCompress/Compressors/Filters/BCJFilterARMT.cs b/src/SharpCompress/Compressors/Filters/BCJFilterARMT.cs index db5b36f2c..89954f566 100644 --- a/src/SharpCompress/Compressors/Filters/BCJFilterARMT.cs +++ b/src/SharpCompress/Compressors/Filters/BCJFilterARMT.cs @@ -27,9 +27,13 @@ protected override int Transform(byte[] buffer, int offset, int count) int dest; if (_isEncoder) + { dest = src + (_pos + i - offset); + } else + { dest = src - (_pos + i - offset); + } dest >>>= 1; buffer[i + 1] = (byte)(0xF0 | ((dest >>> 19) & 0x07)); diff --git a/src/SharpCompress/Compressors/Filters/BCJFilterIA64.cs b/src/SharpCompress/Compressors/Filters/BCJFilterIA64.cs index 44323ae73..80d308a3f 100644 --- a/src/SharpCompress/Compressors/Filters/BCJFilterIA64.cs +++ b/src/SharpCompress/Compressors/Filters/BCJFilterIA64.cs @@ -58,7 +58,9 @@ protected override int Transform(byte[] buffer, int offset, int count) for (int slot = 0, bitPos = 5; slot < 3; ++slot, bitPos += 41) { if (((mask >>> slot) & 1) == 0) + { continue; + } var bytePos = bitPos >>> 3; var bitRes = bitPos & 7; @@ -72,7 +74,9 @@ protected override int Transform(byte[] buffer, int offset, int count) var instrNorm = instr >>> bitRes; if (((instrNorm >>> 37) & 0x0F) != 0x05 || ((instrNorm >>> 9) & 0x07) != 0x00) + { continue; + } var src = (int)((instrNorm >>> 13) & 0x0FFFFF); src |= ((int)(instrNorm >>> 36) & 1) << 20; @@ -80,9 +84,13 @@ protected override int Transform(byte[] buffer, int offset, int count) int dest; if (_isEncoder) + { dest = src + (_pos + i - offset); + } else + { dest = src - (_pos + i - offset); + } dest >>>= 4; diff --git a/src/SharpCompress/Compressors/Filters/BCJFilterRISCV.cs b/src/SharpCompress/Compressors/Filters/BCJFilterRISCV.cs index 67d9cb528..32ad6ea25 100644 --- a/src/SharpCompress/Compressors/Filters/BCJFilterRISCV.cs +++ b/src/SharpCompress/Compressors/Filters/BCJFilterRISCV.cs @@ -27,7 +27,9 @@ private int Decode(byte[] buffer, int offset, int count) { uint b1 = buffer[i + 1]; if ((b1 & 0x0D) != 0) + { continue; + } uint b2 = buffer[i + 2]; uint b3 = buffer[i + 3]; @@ -116,7 +118,9 @@ private int Encode(byte[] buffer, int offset, int count) { uint b1 = buffer[i + 1]; if ((b1 & 0x0D) != 0) + { continue; + } uint b2 = buffer[i + 2]; uint b3 = buffer[i + 3]; diff --git a/src/SharpCompress/Compressors/Filters/BranchExecFilter.cs b/src/SharpCompress/Compressors/Filters/BranchExecFilter.cs index df95c838a..bbe91196e 100644 --- a/src/SharpCompress/Compressors/Filters/BranchExecFilter.cs +++ b/src/SharpCompress/Compressors/Filters/BranchExecFilter.cs @@ -47,13 +47,17 @@ public static void X86Converter(byte[] buf, uint ip, ref uint state) var size = (uint)buf.Length; if (size <= 4) + { return; + } size -= 4; for (i = 0; i < size; ++i) { if ((buf[i] & 0xFE) != 0xE8) + { continue; + } prev_pos = i - prev_pos; if (prev_pos > 3) @@ -89,12 +93,16 @@ public static void X86Converter(byte[] buf, uint ip, ref uint state) { dest = src - (pos + (uint)i + 5); if (prev_mask == 0) + { break; + } j = mask_to_bit_num[prev_mask] * 8u; b = (byte)(dest >> (24 - (int)j)); if (!X86TestByte(b)) + { break; + } src = dest ^ ((1u << (32 - (int)j)) - 1u); } diff --git a/src/SharpCompress/Compressors/LZMA/AesDecoderStream.Async.cs b/src/SharpCompress/Compressors/LZMA/AesDecoderStream.Async.cs new file mode 100644 index 000000000..326eec1a5 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/AesDecoderStream.Async.cs @@ -0,0 +1,75 @@ +using System; +using System.IO; +using System.Security.Cryptography; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.LZMA; + +internal sealed partial class AesDecoderStream +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + if (count == 0 || mWritten == mLimit) + { + return 0; + } + + if (mUnderflow > 0) + { + return HandleUnderflow(buffer, offset, count); + } + + // Need at least 16 bytes to proceed. + if (mEnding - mOffset < 16) + { + Buffer.BlockCopy(mBuffer, mOffset, mBuffer, 0, mEnding - mOffset); + mEnding -= mOffset; + mOffset = 0; + + do + { + cancellationToken.ThrowIfCancellationRequested(); + var read = await mStream + .ReadAsync(mBuffer, mEnding, mBuffer.Length - mEnding, cancellationToken) + .ConfigureAwait(false); + if (read == 0) + { + // We are not done decoding and have less than 16 bytes. + throw new EndOfStreamException(); + } + + mEnding += read; + } while (mEnding - mOffset < 16); + } + + // We shouldn't return more data than we are limited to. + if (count > mLimit - mWritten) + { + count = (int)(mLimit - mWritten); + } + + // We cannot transform less than 16 bytes into the target buffer, + // but we also cannot return zero, so we need to handle this. + if (count < 16) + { + return HandleUnderflow(buffer, offset, count); + } + + if (count > mEnding - mOffset) + { + count = mEnding - mOffset; + } + + // Otherwise we transform directly into the target buffer. + var processed = mDecoder.TransformBlock(mBuffer, mOffset, count & ~15, buffer, offset); + mOffset += processed; + mWritten += processed; + return processed; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/AesDecoderStream.cs b/src/SharpCompress/Compressors/LZMA/AesDecoderStream.cs index 199f277b5..685af602b 100644 --- a/src/SharpCompress/Compressors/LZMA/AesDecoderStream.cs +++ b/src/SharpCompress/Compressors/LZMA/AesDecoderStream.cs @@ -9,7 +9,7 @@ namespace SharpCompress.Compressors.LZMA; -internal sealed class AesDecoderStream : DecoderStream2, IStreamStack +internal sealed partial class AesDecoderStream : DecoderStream2, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -285,70 +285,5 @@ private int HandleUnderflow(byte[] buffer, int offset, int count) return count; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - if (count == 0 || mWritten == mLimit) - { - return 0; - } - - if (mUnderflow > 0) - { - return HandleUnderflow(buffer, offset, count); - } - - // Need at least 16 bytes to proceed. - if (mEnding - mOffset < 16) - { - Buffer.BlockCopy(mBuffer, mOffset, mBuffer, 0, mEnding - mOffset); - mEnding -= mOffset; - mOffset = 0; - - do - { - cancellationToken.ThrowIfCancellationRequested(); - var read = await mStream - .ReadAsync(mBuffer, mEnding, mBuffer.Length - mEnding, cancellationToken) - .ConfigureAwait(false); - if (read == 0) - { - // We are not done decoding and have less than 16 bytes. - throw new EndOfStreamException(); - } - - mEnding += read; - } while (mEnding - mOffset < 16); - } - - // We shouldn't return more data than we are limited to. - if (count > mLimit - mWritten) - { - count = (int)(mLimit - mWritten); - } - - // We cannot transform less than 16 bytes into the target buffer, - // but we also cannot return zero, so we need to handle this. - if (count < 16) - { - return HandleUnderflow(buffer, offset, count); - } - - if (count > mEnding - mOffset) - { - count = mEnding - mOffset; - } - - // Otherwise we transform directly into the target buffer. - var processed = mDecoder.TransformBlock(mBuffer, mOffset, count & ~15, buffer, offset); - mOffset += processed; - mWritten += processed; - return processed; - } - #endregion } diff --git a/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.Async.cs b/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.Async.cs new file mode 100644 index 000000000..ecf82e2e7 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.Async.cs @@ -0,0 +1,177 @@ +#nullable disable + +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.LZMA.LZ; + +internal partial class OutWindow : IAsyncDisposable +{ + public async ValueTask InitAsync(Stream stream) + { + await ReleaseStreamAsync(); + _stream = stream; + } + + public async ValueTask ReleaseStreamAsync(CancellationToken cancellationToken = default) + { + await FlushAsync(cancellationToken).ConfigureAwait(false); + _stream = null; + } + + public async ValueTask DisposeAsync() + { + await ReleaseStreamAsync(); + if (_buffer is null) + { + return; + } + ArrayPool.Shared.Return(_buffer); + _buffer = null; + } + + private async ValueTask FlushAsync(CancellationToken cancellationToken = default) + { + if (_stream is null) + { + return; + } + var size = _pos - _streamPos; + if (size == 0) + { + return; + } + await _stream + .WriteAsync(_buffer, _streamPos, size, cancellationToken) + .ConfigureAwait(false); + if (_pos >= _windowSize) + { + _pos = 0; + } + _streamPos = _pos; + } + + public async ValueTask CopyPendingAsync(CancellationToken cancellationToken = default) + { + if (_pendingLen < 1) + { + return; + } + var rem = _pendingLen; + var pos = (_pendingDist < _pos ? _pos : _pos + _windowSize) - _pendingDist - 1; + while (rem > 0 && HasSpace) + { + if (pos >= _windowSize) + { + pos = 0; + } + await PutByteAsync(_buffer[pos++], cancellationToken).ConfigureAwait(false); + rem--; + } + _pendingLen = rem; + } + + public async ValueTask CopyBlockAsync( + int distance, + int len, + CancellationToken cancellationToken = default + ) + { + var rem = len; + var pos = (distance < _pos ? _pos : _pos + _windowSize) - distance - 1; + var targetSize = HasSpace ? (int)Math.Min(rem, _limit - _total) : 0; + var sizeUntilWindowEnd = Math.Min(_windowSize - _pos, _windowSize - pos); + var sizeUntilOverlap = Math.Abs(pos - _pos); + var fastSize = Math.Min(Math.Min(sizeUntilWindowEnd, sizeUntilOverlap), targetSize); + if (fastSize >= 2) + { + _buffer.AsSpan(pos, fastSize).CopyTo(_buffer.AsSpan(_pos, fastSize)); + _pos += fastSize; + pos += fastSize; + _total += fastSize; + if (_pos >= _windowSize) + { + await FlushAsync(cancellationToken).ConfigureAwait(false); + } + rem -= fastSize; + } + while (rem > 0 && HasSpace) + { + if (pos >= _windowSize) + { + pos = 0; + } + await PutByteAsync(_buffer[pos++], cancellationToken).ConfigureAwait(false); + rem--; + } + _pendingLen = rem; + _pendingDist = distance; + } + + public async ValueTask PutByteAsync(byte b, CancellationToken cancellationToken = default) + { + _buffer[_pos++] = b; + _total++; + if (_pos >= _windowSize) + { + await FlushAsync(cancellationToken).ConfigureAwait(false); + } + } + + public async ValueTask CopyStreamAsync( + Stream stream, + int len, + CancellationToken cancellationToken = default + ) + { + var size = len; + while (size > 0 && _pos < _windowSize && _total < _limit) + { + cancellationToken.ThrowIfCancellationRequested(); + + var curSize = _windowSize - _pos; + if (curSize > _limit - _total) + { + curSize = (int)(_limit - _total); + } + if (curSize > size) + { + curSize = size; + } + var numReadBytes = await stream + .ReadAsync(_buffer, _pos, curSize, cancellationToken) + .ConfigureAwait(false); + if (numReadBytes == 0) + { + throw new DataErrorException(); + } + size -= numReadBytes; + _pos += numReadBytes; + _total += numReadBytes; + if (_pos >= _windowSize) + { + await FlushAsync(cancellationToken).ConfigureAwait(false); + } + } + return len - size; + } + + public async ValueTask TrainAsync(Stream stream) + { + var len = stream.Length; + var size = (len < _windowSize) ? (int)len : _windowSize; + stream.Position = len - size; + _total = 0; + _limit = size; + _pos = _windowSize - size; + await CopyStreamAsync(stream, size); + if (_pos == _windowSize) + { + _pos = 0; + } + _streamPos = _pos; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.cs b/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.cs index 0866f718f..df5a74b7a 100644 --- a/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.cs +++ b/src/SharpCompress/Compressors/LZMA/LZ/LzOutWindow.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Compressors.LZMA.LZ; -internal class OutWindow : IDisposable +internal partial class OutWindow : IDisposable { private byte[] _buffer; private int _windowSize; @@ -87,12 +87,6 @@ public void ReleaseStream() _stream = null; } - public async ValueTask ReleaseStreamAsync(CancellationToken cancellationToken = default) - { - await FlushAsync(cancellationToken).ConfigureAwait(false); - _stream = null; - } - private void Flush() { if (_stream is null) @@ -112,27 +106,6 @@ private void Flush() _streamPos = _pos; } - private async ValueTask FlushAsync(CancellationToken cancellationToken = default) - { - if (_stream is null) - { - return; - } - var size = _pos - _streamPos; - if (size == 0) - { - return; - } - await _stream - .WriteAsync(_buffer, _streamPos, size, cancellationToken) - .ConfigureAwait(false); - if (_pos >= _windowSize) - { - _pos = 0; - } - _streamPos = _pos; - } - public void CopyPending() { if (_pendingLen < 1) @@ -153,26 +126,6 @@ public void CopyPending() _pendingLen = rem; } - public async ValueTask CopyPendingAsync(CancellationToken cancellationToken = default) - { - if (_pendingLen < 1) - { - return; - } - var rem = _pendingLen; - var pos = (_pendingDist < _pos ? _pos : _pos + _windowSize) - _pendingDist - 1; - while (rem > 0 && HasSpace) - { - if (pos >= _windowSize) - { - pos = 0; - } - await PutByteAsync(_buffer[pos++], cancellationToken).ConfigureAwait(false); - rem--; - } - _pendingLen = rem; - } - public void CopyBlock(int distance, int len) { var rem = len; @@ -206,43 +159,6 @@ public void CopyBlock(int distance, int len) _pendingDist = distance; } - public async ValueTask CopyBlockAsync( - int distance, - int len, - CancellationToken cancellationToken = default - ) - { - var rem = len; - var pos = (distance < _pos ? _pos : _pos + _windowSize) - distance - 1; - var targetSize = HasSpace ? (int)Math.Min(rem, _limit - _total) : 0; - var sizeUntilWindowEnd = Math.Min(_windowSize - _pos, _windowSize - pos); - var sizeUntilOverlap = Math.Abs(pos - _pos); - var fastSize = Math.Min(Math.Min(sizeUntilWindowEnd, sizeUntilOverlap), targetSize); - if (fastSize >= 2) - { - _buffer.AsSpan(pos, fastSize).CopyTo(_buffer.AsSpan(_pos, fastSize)); - _pos += fastSize; - pos += fastSize; - _total += fastSize; - if (_pos >= _windowSize) - { - await FlushAsync(cancellationToken).ConfigureAwait(false); - } - rem -= fastSize; - } - while (rem > 0 && HasSpace) - { - if (pos >= _windowSize) - { - pos = 0; - } - await PutByteAsync(_buffer[pos++], cancellationToken).ConfigureAwait(false); - rem--; - } - _pendingLen = rem; - _pendingDist = distance; - } - public void PutByte(byte b) { _buffer[_pos++] = b; @@ -253,16 +169,6 @@ public void PutByte(byte b) } } - public async ValueTask PutByteAsync(byte b, CancellationToken cancellationToken = default) - { - _buffer[_pos++] = b; - _total++; - if (_pos >= _windowSize) - { - await FlushAsync(cancellationToken).ConfigureAwait(false); - } - } - public byte GetByte(int distance) { var pos = _pos - distance - 1; @@ -303,44 +209,6 @@ public int CopyStream(Stream stream, int len) return len - size; } - public async ValueTask CopyStreamAsync( - Stream stream, - int len, - CancellationToken cancellationToken = default - ) - { - var size = len; - while (size > 0 && _pos < _windowSize && _total < _limit) - { - cancellationToken.ThrowIfCancellationRequested(); - - var curSize = _windowSize - _pos; - if (curSize > _limit - _total) - { - curSize = (int)(_limit - _total); - } - if (curSize > size) - { - curSize = size; - } - var numReadBytes = await stream - .ReadAsync(_buffer, _pos, curSize, cancellationToken) - .ConfigureAwait(false); - if (numReadBytes == 0) - { - throw new DataErrorException(); - } - size -= numReadBytes; - _pos += numReadBytes; - _total += numReadBytes; - if (_pos >= _windowSize) - { - await FlushAsync(cancellationToken).ConfigureAwait(false); - } - } - return len - size; - } - public void SetLimit(long size) => _limit = _total + size; public bool HasSpace => _pos < _windowSize && _total < _limit; diff --git a/src/SharpCompress/Compressors/LZMA/LZipStream.Async.cs b/src/SharpCompress/Compressors/LZMA/LZipStream.Async.cs new file mode 100644 index 000000000..f83cbff9d --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/LZipStream.Async.cs @@ -0,0 +1,97 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Crypto; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.LZMA; + +public sealed partial class LZipStream +{ + /// + /// Asynchronously determines if the given stream is positioned at the start of a v1 LZip + /// file, as indicated by the ASCII characters "LZIP" and a version byte + /// of 1, followed by at least one byte. + /// + /// The stream to read from. Must not be null. + /// Cancellation token. + /// true if the given stream is an LZip file, false otherwise. + public static async ValueTask IsLZipFileAsync( + Stream stream, + CancellationToken cancellationToken = default + ) => await ValidateAndReadSizeAsync(stream, cancellationToken) != 0; + + /// + /// Asynchronously reads the 6-byte header of the stream, and returns 0 if either the header + /// couldn't be read or it isn't a validate LZIP header, or the dictionary + /// size if it *is* a valid LZIP file. + /// + public static async ValueTask ValidateAndReadSizeAsync( + Stream stream, + CancellationToken cancellationToken + ) + { + // Read the header + byte[] header = new byte[6]; + var n = await stream + .ReadAsync(header, 0, header.Length, cancellationToken) + .ConfigureAwait(false); + + // TODO: Handle reading only part of the header? + + if (n != 6) + { + return 0; + } + + if ( + header[0] != 'L' + || header[1] != 'Z' + || header[2] != 'I' + || header[3] != 'P' + || header[4] != 1 /* version 1 */ + ) + { + return 0; + } + var basePower = header[5] & 0x1F; + var subtractionNumerator = (header[5] & 0xE0) >> 5; + return (1 << basePower) - (subtractionNumerator * (1 << (basePower - 4))); + } + +#if !LEGACY_DOTNET + /// + /// Asynchronously reads bytes from the current stream into a buffer. + /// + public override ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) => _stream.ReadAsync(buffer, cancellationToken); +#endif + + /// + /// Asynchronously reads bytes from the current stream into a buffer. + /// + public override Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) => _stream.ReadAsync(buffer, offset, count, cancellationToken); + + /// + /// Asynchronously writes bytes from a buffer to the current stream. + /// + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + cancellationToken.ThrowIfCancellationRequested(); + await _stream.WriteAsync(buffer, offset, count, cancellationToken); + _writeCount += count; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/LZipStream.cs b/src/SharpCompress/Compressors/LZMA/LZipStream.cs index d03353f77..a5039505e 100644 --- a/src/SharpCompress/Compressors/LZMA/LZipStream.cs +++ b/src/SharpCompress/Compressors/LZMA/LZipStream.cs @@ -17,7 +17,7 @@ namespace SharpCompress.Compressors.LZMA; /// /// Stream supporting the LZIP format, as documented at http://www.nongnu.org/lzip/manual/lzip_manual.html /// -public sealed class LZipStream : Stream, IStreamStack +public sealed partial class LZipStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -62,7 +62,7 @@ public LZipStream(Stream stream, CompressionMode mode, bool leaveOpen = false) throw new InvalidFormatException("Not an LZip stream"); } var properties = GetProperties(dSize); - _stream = new LzmaStream(properties, stream, leaveOpen: leaveOpen); + _stream = LzmaStream.Create(properties, stream, leaveOpen: leaveOpen); } else { @@ -72,9 +72,10 @@ public LZipStream(Stream stream, CompressionMode mode, bool leaveOpen = false) _countingWritableSubStream = new SharpCompressStream(stream, leaveOpen: true); _stream = new Crc32Stream( - new LzmaStream( + LzmaStream.Create( new LzmaEncoderProperties(true, dSize), false, + null, _countingWritableSubStream ) ); @@ -167,11 +168,6 @@ public override int Read(byte[] buffer, int offset, int count) => #if !LEGACY_DOTNET - public override ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) => _stream.ReadAsync(buffer, cancellationToken); - public override int Read(Span buffer) => _stream.Read(buffer); public override void Write(ReadOnlySpan buffer) @@ -194,24 +190,7 @@ public override void WriteByte(byte value) ++_writeCount; } - public override Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) => _stream.ReadAsync(buffer, offset, count, cancellationToken); - - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - cancellationToken.ThrowIfCancellationRequested(); - await _stream.WriteAsync(buffer, offset, count, cancellationToken); - _writeCount += count; - } + // Async methods moved to LZipStream.Async.cs #endregion @@ -257,6 +236,8 @@ public static int ValidateAndReadSize(Stream stream) return (1 << basePower) - (subtractionNumerator * (1 << (basePower - 4))); } + // Async methods moved to LZipStream.Async.cs + private static readonly byte[] headerBytes = [ (byte)'L', diff --git a/src/SharpCompress/Compressors/LZMA/LzmaDecoder.Async.cs b/src/SharpCompress/Compressors/LZMA/LzmaDecoder.Async.cs new file mode 100644 index 000000000..add73b8e8 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/LzmaDecoder.Async.cs @@ -0,0 +1,344 @@ +#nullable disable + +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.LZMA.LZ; +using SharpCompress.Compressors.LZMA.RangeCoder; + +namespace SharpCompress.Compressors.LZMA; + +public partial class Decoder : ICoder, ISetDecoderProperties +{ + partial class LenDecoder + { + public async ValueTask DecodeAsync( + RangeCoder.Decoder rangeDecoder, + uint posState, + CancellationToken cancellationToken = default + ) + { + if ( + await _choice.DecodeAsync(rangeDecoder, cancellationToken).ConfigureAwait(false) + == 0 + ) + { + return await _lowCoder[posState] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } + var symbol = Base.K_NUM_LOW_LEN_SYMBOLS; + if ( + await _choice2.DecodeAsync(rangeDecoder, cancellationToken).ConfigureAwait(false) + == 0 + ) + { + symbol += await _midCoder[posState] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } + else + { + symbol += Base.K_NUM_MID_LEN_SYMBOLS; + symbol += await _highCoder + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } + return symbol; + } + } + + partial class LiteralDecoder + { + partial struct Decoder2 + { + public async ValueTask DecodeNormalAsync( + RangeCoder.Decoder rangeDecoder, + CancellationToken cancellationToken = default + ) + { + uint symbol = 1; + do + { + symbol = + (symbol << 1) + | await _decoders[symbol] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } while (symbol < 0x100); + return (byte)symbol; + } + + public async ValueTask DecodeWithMatchByteAsync( + RangeCoder.Decoder rangeDecoder, + byte matchByte, + CancellationToken cancellationToken = default + ) + { + uint symbol = 1; + do + { + var matchBit = (uint)(matchByte >> 7) & 1; + matchByte <<= 1; + var bit = await _decoders[((1 + matchBit) << 8) + symbol] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + symbol = (symbol << 1) | bit; + if (matchBit != bit) + { + while (symbol < 0x100) + { + symbol = + (symbol << 1) + | await _decoders[symbol] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } + break; + } + } while (symbol < 0x100); + return (byte)symbol; + } + } + + public async ValueTask DecodeNormalAsync( + RangeCoder.Decoder rangeDecoder, + uint pos, + byte prevByte, + CancellationToken cancellationToken = default + ) => + await _coders[GetState(pos, prevByte)] + .DecodeNormalAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + + public async ValueTask DecodeWithMatchByteAsync( + RangeCoder.Decoder rangeDecoder, + uint pos, + byte prevByte, + byte matchByte, + CancellationToken cancellationToken = default + ) => + await _coders[GetState(pos, prevByte)] + .DecodeWithMatchByteAsync(rangeDecoder, matchByte, cancellationToken) + .ConfigureAwait(false); + } + + public async Task CodeAsync( + Stream inStream, + Stream outStream, + long inSize, + long outSize, + ICodeProgress progress, + CancellationToken cancellationToken = default + ) + { + if (_outWindow is null) + { + CreateDictionary(); + } + await _outWindow.InitAsync(outStream); + if (outSize > 0) + { + _outWindow.SetLimit(outSize); + } + else + { + _outWindow.SetLimit(long.MaxValue - _outWindow.Total); + } + + var rangeDecoder = new RangeCoder.Decoder(); + await rangeDecoder.InitAsync(inStream, cancellationToken).ConfigureAwait(false); + + await CodeAsync(_dictionarySize, _outWindow, rangeDecoder, cancellationToken) + .ConfigureAwait(false); + + await _outWindow.ReleaseStreamAsync(cancellationToken).ConfigureAwait(false); + rangeDecoder.ReleaseStream(); + + await _outWindow.DisposeAsync().ConfigureAwait(false); + _outWindow = null; + } + + internal async ValueTask CodeAsync( + int dictionarySize, + OutWindow outWindow, + RangeCoder.Decoder rangeDecoder, + CancellationToken cancellationToken = default + ) + { + var dictionarySizeCheck = Math.Max(dictionarySize, 1); + + await outWindow.CopyPendingAsync(cancellationToken).ConfigureAwait(false); + + while (outWindow.HasSpace) + { + cancellationToken.ThrowIfCancellationRequested(); + + var posState = (uint)outWindow.Total & _posStateMask; + if ( + await _isMatchDecoders[(_state._index << Base.K_NUM_POS_STATES_BITS_MAX) + posState] + .DecodeAsync(rangeDecoder, cancellationToken) == 0 + ) + { + byte b; + var prevByte = outWindow.GetByte(0); + if (!_state.IsCharState()) + { + b = await _literalDecoder.DecodeWithMatchByteAsync( + rangeDecoder, + (uint)outWindow.Total, + prevByte, + outWindow.GetByte((int)_rep0), + cancellationToken + ); + } + else + { + b = await _literalDecoder.DecodeNormalAsync( + rangeDecoder, + (uint)outWindow.Total, + prevByte, + cancellationToken + ); + } + await outWindow.PutByteAsync(b, cancellationToken).ConfigureAwait(false); + _state.UpdateChar(); + } + else + { + uint len; + if ( + await _isRepDecoders[_state._index].DecodeAsync(rangeDecoder, cancellationToken) + == 1 + ) + { + if ( + await _isRepG0Decoders[_state._index] + .DecodeAsync(rangeDecoder, cancellationToken) == 0 + ) + { + if ( + await _isRep0LongDecoders[ + (_state._index << Base.K_NUM_POS_STATES_BITS_MAX) + posState + ] + .DecodeAsync(rangeDecoder, cancellationToken) == 0 + ) + { + _state.UpdateShortRep(); + await outWindow + .PutByteAsync(outWindow.GetByte((int)_rep0), cancellationToken) + .ConfigureAwait(false); + continue; + } + } + else + { + uint distance; + if ( + await _isRepG1Decoders[_state._index] + .DecodeAsync(rangeDecoder, cancellationToken) == 0 + ) + { + distance = _rep1; + } + else + { + if ( + await _isRepG2Decoders[_state._index] + .DecodeAsync(rangeDecoder, cancellationToken) == 0 + ) + { + distance = _rep2; + } + else + { + distance = _rep3; + _rep3 = _rep2; + } + _rep2 = _rep1; + } + _rep1 = _rep0; + _rep0 = distance; + } + len = + await _repLenDecoder + .DecodeAsync(rangeDecoder, posState, cancellationToken) + .ConfigureAwait(false) + Base.K_MATCH_MIN_LEN; + _state.UpdateRep(); + } + else + { + _rep3 = _rep2; + _rep2 = _rep1; + _rep1 = _rep0; + len = + Base.K_MATCH_MIN_LEN + + await _lenDecoder + .DecodeAsync(rangeDecoder, posState, cancellationToken) + .ConfigureAwait(false); + _state.UpdateMatch(); + var posSlot = await _posSlotDecoder[Base.GetLenToPosState(len)] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + if (posSlot >= Base.K_START_POS_MODEL_INDEX) + { + var numDirectBits = (int)((posSlot >> 1) - 1); + _rep0 = ((2 | (posSlot & 1)) << numDirectBits); + if (posSlot < Base.K_END_POS_MODEL_INDEX) + { + _rep0 += await BitTreeDecoder + .ReverseDecodeAsync( + _posDecoders, + _rep0 - posSlot - 1, + rangeDecoder, + numDirectBits, + cancellationToken + ) + .ConfigureAwait(false); + } + else + { + _rep0 += ( + await rangeDecoder + .DecodeDirectBitsAsync( + numDirectBits - Base.K_NUM_ALIGN_BITS, + cancellationToken + ) + .ConfigureAwait(false) << Base.K_NUM_ALIGN_BITS + ); + _rep0 += await _posAlignDecoder + .ReverseDecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } + } + else + { + _rep0 = posSlot; + } + } + if (_rep0 >= outWindow.Total || _rep0 >= dictionarySizeCheck) + { + if (_rep0 == 0xFFFFFFFF) + { + return true; + } + throw new DataErrorException(); + } + await outWindow + .CopyBlockAsync((int)_rep0, (int)len, cancellationToken) + .ConfigureAwait(false); + } + } + return false; + } + + public async ValueTask TrainAsync(Stream stream) + { + if (_outWindow is null) + { + CreateDictionary(); + } + await _outWindow.TrainAsync(stream); + } +} diff --git a/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs b/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs index 0fb39626f..d12adbfff 100644 --- a/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs +++ b/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs @@ -9,9 +9,9 @@ namespace SharpCompress.Compressors.LZMA; -public class Decoder : ICoder, ISetDecoderProperties // ,System.IO.Stream +public partial class Decoder : ICoder, ISetDecoderProperties // ,System.IO.Stream { - private class LenDecoder + private partial class LenDecoder { private BitDecoder _choice = new(); private BitDecoder _choice2 = new(); @@ -62,9 +62,9 @@ public uint Decode(RangeCoder.Decoder rangeDecoder, uint posState) } } - private class LiteralDecoder + private partial class LiteralDecoder { - private struct Decoder2 + private partial struct Decoder2 { private BitDecoder[] _decoders; @@ -314,42 +314,6 @@ ICodeProgress progress _outWindow = null; } - public async System.Threading.Tasks.Task CodeAsync( - Stream inStream, - Stream outStream, - long inSize, - long outSize, - ICodeProgress progress, - System.Threading.CancellationToken cancellationToken = default - ) - { - if (_outWindow is null) - { - CreateDictionary(); - } - _outWindow.Init(outStream); - if (outSize > 0) - { - _outWindow.SetLimit(outSize); - } - else - { - _outWindow.SetLimit(long.MaxValue - _outWindow.Total); - } - - var rangeDecoder = new RangeCoder.Decoder(); - rangeDecoder.Init(inStream); - - await CodeAsync(_dictionarySize, _outWindow, rangeDecoder, cancellationToken) - .ConfigureAwait(false); - - await _outWindow.ReleaseStreamAsync(cancellationToken).ConfigureAwait(false); - rangeDecoder.ReleaseStream(); - - _outWindow.Dispose(); - _outWindow = null; - } - internal bool Code(int dictionarySize, OutWindow outWindow, RangeCoder.Decoder rangeDecoder) { var dictionarySizeCheck = Math.Max(dictionarySize, 1); @@ -476,143 +440,6 @@ internal bool Code(int dictionarySize, OutWindow outWindow, RangeCoder.Decoder r return false; } - internal async ValueTask CodeAsync( - int dictionarySize, - OutWindow outWindow, - RangeCoder.Decoder rangeDecoder, - System.Threading.CancellationToken cancellationToken = default - ) - { - var dictionarySizeCheck = Math.Max(dictionarySize, 1); - - await outWindow.CopyPendingAsync(cancellationToken).ConfigureAwait(false); - - while (outWindow.HasSpace) - { - cancellationToken.ThrowIfCancellationRequested(); - - var posState = (uint)outWindow.Total & _posStateMask; - if ( - _isMatchDecoders[(_state._index << Base.K_NUM_POS_STATES_BITS_MAX) + posState] - .Decode(rangeDecoder) == 0 - ) - { - byte b; - var prevByte = outWindow.GetByte(0); - if (!_state.IsCharState()) - { - b = _literalDecoder.DecodeWithMatchByte( - rangeDecoder, - (uint)outWindow.Total, - prevByte, - outWindow.GetByte((int)_rep0) - ); - } - else - { - b = _literalDecoder.DecodeNormal(rangeDecoder, (uint)outWindow.Total, prevByte); - } - await outWindow.PutByteAsync(b, cancellationToken).ConfigureAwait(false); - _state.UpdateChar(); - } - else - { - uint len; - if (_isRepDecoders[_state._index].Decode(rangeDecoder) == 1) - { - if (_isRepG0Decoders[_state._index].Decode(rangeDecoder) == 0) - { - if ( - _isRep0LongDecoders[ - (_state._index << Base.K_NUM_POS_STATES_BITS_MAX) + posState - ] - .Decode(rangeDecoder) == 0 - ) - { - _state.UpdateShortRep(); - await outWindow - .PutByteAsync(outWindow.GetByte((int)_rep0), cancellationToken) - .ConfigureAwait(false); - continue; - } - } - else - { - uint distance; - if (_isRepG1Decoders[_state._index].Decode(rangeDecoder) == 0) - { - distance = _rep1; - } - else - { - if (_isRepG2Decoders[_state._index].Decode(rangeDecoder) == 0) - { - distance = _rep2; - } - else - { - distance = _rep3; - _rep3 = _rep2; - } - _rep2 = _rep1; - } - _rep1 = _rep0; - _rep0 = distance; - } - len = _repLenDecoder.Decode(rangeDecoder, posState) + Base.K_MATCH_MIN_LEN; - _state.UpdateRep(); - } - else - { - _rep3 = _rep2; - _rep2 = _rep1; - _rep1 = _rep0; - len = Base.K_MATCH_MIN_LEN + _lenDecoder.Decode(rangeDecoder, posState); - _state.UpdateMatch(); - var posSlot = _posSlotDecoder[Base.GetLenToPosState(len)].Decode(rangeDecoder); - if (posSlot >= Base.K_START_POS_MODEL_INDEX) - { - var numDirectBits = (int)((posSlot >> 1) - 1); - _rep0 = ((2 | (posSlot & 1)) << numDirectBits); - if (posSlot < Base.K_END_POS_MODEL_INDEX) - { - _rep0 += BitTreeDecoder.ReverseDecode( - _posDecoders, - _rep0 - posSlot - 1, - rangeDecoder, - numDirectBits - ); - } - else - { - _rep0 += ( - rangeDecoder.DecodeDirectBits(numDirectBits - Base.K_NUM_ALIGN_BITS) - << Base.K_NUM_ALIGN_BITS - ); - _rep0 += _posAlignDecoder.ReverseDecode(rangeDecoder); - } - } - else - { - _rep0 = posSlot; - } - } - if (_rep0 >= outWindow.Total || _rep0 >= dictionarySizeCheck) - { - if (_rep0 == 0xFFFFFFFF) - { - return true; - } - throw new DataErrorException(); - } - await outWindow - .CopyBlockAsync((int)_rep0, (int)len, cancellationToken) - .ConfigureAwait(false); - } - } - return false; - } - public void SetDecoderProperties(byte[] properties) { if (properties.Length < 1) diff --git a/src/SharpCompress/Compressors/LZMA/LzmaStream.Async.cs b/src/SharpCompress/Compressors/LZMA/LzmaStream.Async.cs new file mode 100644 index 000000000..10abaaec6 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/LzmaStream.Async.cs @@ -0,0 +1,386 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.LZMA; + +public partial class LzmaStream +{ + public static async ValueTask CreateAsync( + byte[] properties, + Stream inputStream, + long inputSize, + long outputSize, + Stream? presetDictionary, + bool isLzma2, + bool leaveOpen = false + ) + { + var lzma = new LzmaStream( + properties, + inputStream, + inputSize, + outputSize, + isLzma2, + leaveOpen + ); + if (!isLzma2) + { + if (presetDictionary != null) + { + await lzma._outWindow.TrainAsync(presetDictionary); + } + + await lzma._rangeDecoder.InitAsync(inputStream); + } + else + { + if (presetDictionary != null) + { + await lzma._outWindow.TrainAsync(presetDictionary); + lzma._needDictReset = false; + } + } + return lzma; + } + + /*public static async ValueTask CreateAsync( + LzmaEncoderProperties properties, + bool isLzma2, + Stream? presetDictionary, + Stream outputStream + ) + { + var lzma = new LzmaStream(properties, isLzma2, presetDictionary); + + lzma._encoder!.SetStreams(null, outputStream, -1, -1); + + if (presetDictionary != null) + { + lzma._encoder.Train(presetDictionary); + } + return lzma; + }*/ + + private async ValueTask DecodeChunkHeaderAsync(CancellationToken cancellationToken = default) + { + var controlBuffer = new byte[1]; + await _inputStream! + .ReadExactAsync(controlBuffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + var control = controlBuffer[0]; + _inputPosition++; + + if (control == 0x00) + { + _endReached = true; + return; + } + + if (control >= 0xE0 || control == 0x01) + { + _needProps = true; + _needDictReset = false; + _outWindow.Reset(); + } + else if (_needDictReset) + { + throw new DataErrorException(); + } + + if (control >= 0x80) + { + _uncompressedChunk = false; + + _availableBytes = (control & 0x1F) << 16; + var buffer = new byte[2]; + await _inputStream! + .ReadExactAsync(buffer, 0, 2, cancellationToken) + .ConfigureAwait(false); + _availableBytes += (buffer[0] << 8) + buffer[1] + 1; + _inputPosition += 2; + + await _inputStream! + .ReadExactAsync(buffer, 0, 2, cancellationToken) + .ConfigureAwait(false); + _rangeDecoderLimit = (buffer[0] << 8) + buffer[1] + 1; + _inputPosition += 2; + + if (control >= 0xC0) + { + _needProps = false; + await _inputStream! + .ReadExactAsync(controlBuffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + Properties[0] = controlBuffer[0]; + _inputPosition++; + + _decoder = new Decoder(); + _decoder.SetDecoderProperties(Properties); + } + else if (_needProps) + { + throw new DataErrorException(); + } + else if (control >= 0xA0) + { + _decoder = new Decoder(); + _decoder.SetDecoderProperties(Properties); + } + + _rangeDecoder.Init(_inputStream); + } + else if (control > 0x02) + { + throw new DataErrorException(); + } + else + { + _uncompressedChunk = true; + var buffer = new byte[2]; + await _inputStream! + .ReadExactAsync(buffer, 0, 2, cancellationToken) + .ConfigureAwait(false); + _availableBytes = (buffer[0] << 8) + buffer[1] + 1; + _inputPosition += 2; + } + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (_endReached) + { + return 0; + } + + var total = 0; + while (total < count) + { + cancellationToken.ThrowIfCancellationRequested(); + + if (_availableBytes == 0) + { + if (_isLzma2) + { + await DecodeChunkHeaderAsync(cancellationToken).ConfigureAwait(false); + } + else + { + _endReached = true; + } + if (_endReached) + { + break; + } + } + + var toProcess = count - total; + if (toProcess > _availableBytes) + { + toProcess = (int)_availableBytes; + } + + _outWindow.SetLimit(toProcess); + if (_uncompressedChunk) + { + _inputPosition += await _outWindow + .CopyStreamAsync(_inputStream, toProcess, cancellationToken) + .ConfigureAwait(false); + } + else if ( + await _decoder! + .CodeAsync(_dictionarySize, _outWindow, _rangeDecoder, cancellationToken) + .ConfigureAwait(false) + && _outputSize < 0 + ) + { + _availableBytes = _outWindow.AvailableBytes; + } + + var read = _outWindow.Read(buffer, offset, toProcess); + total += read; + offset += read; + _position += read; + _availableBytes -= read; + + if (_availableBytes == 0 && !_uncompressedChunk) + { + if ( + !_rangeDecoder.IsFinished + || (_rangeDecoderLimit >= 0 && _rangeDecoder._total != _rangeDecoderLimit) + ) + { + _outWindow.SetLimit(toProcess + 1); + if ( + !await _decoder! + .CodeAsync( + _dictionarySize, + _outWindow, + _rangeDecoder, + cancellationToken + ) + .ConfigureAwait(false) + ) + { + _rangeDecoder.ReleaseStream(); + throw new DataErrorException(); + } + } + + _rangeDecoder.ReleaseStream(); + + _inputPosition += _rangeDecoder._total; + if (_outWindow.HasPending) + { + throw new DataErrorException(); + } + } + } + + if (_endReached) + { + if (_inputSize >= 0 && _inputPosition != _inputSize) + { + throw new DataErrorException(); + } + if (_outputSize >= 0 && _position != _outputSize) + { + throw new DataErrorException(); + } + } + + return total; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (_endReached) + { + return 0; + } + + var total = 0; + var offset = 0; + var count = buffer.Length; + while (total < count) + { + cancellationToken.ThrowIfCancellationRequested(); + + if (_availableBytes == 0) + { + if (_isLzma2) + { + await DecodeChunkHeaderAsync(cancellationToken).ConfigureAwait(false); + } + else + { + _endReached = true; + } + if (_endReached) + { + break; + } + } + + var toProcess = count - total; + if (toProcess > _availableBytes) + { + toProcess = (int)_availableBytes; + } + + _outWindow.SetLimit(toProcess); + if (_uncompressedChunk) + { + _inputPosition += await _outWindow + .CopyStreamAsync(_inputStream, toProcess, cancellationToken) + .ConfigureAwait(false); + } + else if ( + await _decoder! + .CodeAsync(_dictionarySize, _outWindow, _rangeDecoder, cancellationToken) + .ConfigureAwait(false) + && _outputSize < 0 + ) + { + _availableBytes = _outWindow.AvailableBytes; + } + + var read = _outWindow.Read(buffer, offset, toProcess); + total += read; + offset += read; + _position += read; + _availableBytes -= read; + + if (_availableBytes == 0 && !_uncompressedChunk) + { + if ( + !_rangeDecoder.IsFinished + || (_rangeDecoderLimit >= 0 && _rangeDecoder._total != _rangeDecoderLimit) + ) + { + _outWindow.SetLimit(toProcess + 1); + if ( + !await _decoder! + .CodeAsync( + _dictionarySize, + _outWindow, + _rangeDecoder, + cancellationToken + ) + .ConfigureAwait(false) + ) + { + _rangeDecoder.ReleaseStream(); + throw new DataErrorException(); + } + } + + _rangeDecoder.ReleaseStream(); + + _inputPosition += _rangeDecoder._total; + if (_outWindow.HasPending) + { + throw new DataErrorException(); + } + } + } + + if (_endReached) + { + if (_inputSize >= 0 && _inputPosition != _inputSize) + { + throw new DataErrorException(); + } + if (_outputSize >= 0 && _position != _outputSize) + { + throw new DataErrorException(); + } + } + + return total; + } +#endif + + public override Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + cancellationToken.ThrowIfCancellationRequested(); + Write(buffer, offset, count); + return Task.CompletedTask; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/LzmaStream.cs b/src/SharpCompress/Compressors/LZMA/LzmaStream.cs index 2ddfdd8cc..6a58f46e0 100644 --- a/src/SharpCompress/Compressors/LZMA/LzmaStream.cs +++ b/src/SharpCompress/Compressors/LZMA/LzmaStream.cs @@ -1,5 +1,3 @@ -#nullable disable - using System; using System.Buffers.Binary; using System.IO; @@ -10,14 +8,14 @@ namespace SharpCompress.Compressors.LZMA; -public class LzmaStream : Stream, IStreamStack +public partial class LzmaStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } #endif int IStreamStack.DefaultBufferSize { get; set; } - Stream IStreamStack.BaseStream() => _inputStream; + Stream IStreamStack.BaseStream() => _inputStream!; int IStreamStack.BufferSize { @@ -32,7 +30,7 @@ int IStreamStack.BufferPosition void IStreamStack.SetPosition(long position) { } - private readonly Stream _inputStream; + private readonly Stream? _inputStream; private readonly long _inputSize; private readonly long _outputSize; private readonly bool _leaveOpen; @@ -40,7 +38,7 @@ void IStreamStack.SetPosition(long position) { } private readonly int _dictionarySize; private readonly OutWindow _outWindow = new(); private readonly RangeCoder.Decoder _rangeDecoder = new(); - private Decoder _decoder; + private Decoder? _decoder; private long _position; private bool _endReached; @@ -54,38 +52,14 @@ void IStreamStack.SetPosition(long position) { } private bool _needDictReset = true; private bool _needProps = true; - private readonly Encoder _encoder; + private readonly Encoder? _encoder; private bool _isDisposed; - public LzmaStream(byte[] properties, Stream inputStream, bool leaveOpen = false) - : this(properties, inputStream, -1, -1, null, properties.Length < 5, leaveOpen) { } - - public LzmaStream(byte[] properties, Stream inputStream, long inputSize, bool leaveOpen = false) - : this(properties, inputStream, inputSize, -1, null, properties.Length < 5, leaveOpen) { } - - public LzmaStream( + private LzmaStream( byte[] properties, Stream inputStream, long inputSize, long outputSize, - bool leaveOpen = false - ) - : this( - properties, - inputStream, - inputSize, - outputSize, - null, - properties.Length < 5, - leaveOpen - ) { } - - public LzmaStream( - byte[] properties, - Stream inputStream, - long inputSize, - long outputSize, - Stream presetDictionary, bool isLzma2, bool leaveOpen = false ) @@ -95,21 +69,10 @@ public LzmaStream( _outputSize = outputSize; _isLzma2 = isLzma2; _leaveOpen = leaveOpen; - -#if DEBUG_STREAMS - this.DebugConstruct(typeof(LzmaStream)); -#endif - if (!isLzma2) { _dictionarySize = BinaryPrimitives.ReadInt32LittleEndian(properties.AsSpan(1)); _outWindow.Create(_dictionarySize); - if (presetDictionary != null) - { - _outWindow.Train(presetDictionary); - } - - _rangeDecoder.Init(inputStream); _decoder = new Decoder(); _decoder.SetDecoderProperties(properties); @@ -124,26 +87,81 @@ public LzmaStream( _dictionarySize <<= (properties[0] >> 1) + 11; _outWindow.Create(_dictionarySize); - if (presetDictionary != null) - { - _outWindow.Train(presetDictionary); - _needDictReset = false; - } Properties = new byte[1]; _availableBytes = 0; } } - public LzmaStream(LzmaEncoderProperties properties, bool isLzma2, Stream outputStream) - : this(properties, isLzma2, null, outputStream) { } + public static LzmaStream Create( + byte[] properties, + Stream inputStream, + bool leaveOpen = false + ) => Create(properties, inputStream, -1, -1, null, properties.Length < 5, leaveOpen); + + public static LzmaStream Create( + byte[] properties, + Stream inputStream, + long inputSize, + bool leaveOpen = false + ) => Create(properties, inputStream, inputSize, -1, null, properties.Length < 5, leaveOpen); - public LzmaStream( - LzmaEncoderProperties properties, + public static LzmaStream Create( + byte[] properties, + Stream inputStream, + long inputSize, + long outputSize, + bool leaveOpen = false + ) => + Create( + properties, + inputStream, + inputSize, + outputSize, + null, + properties.Length < 5, + leaveOpen + ); + + public static LzmaStream Create( + byte[] properties, + Stream inputStream, + long inputSize, + long outputSize, + Stream? presetDictionary, bool isLzma2, - Stream presetDictionary, - Stream outputStream + bool leaveOpen = false ) + { + var lzma = new LzmaStream( + properties, + inputStream, + inputSize, + outputSize, + isLzma2, + leaveOpen + ); + if (!isLzma2) + { + if (presetDictionary != null) + { + lzma._outWindow.Train(presetDictionary); + } + + lzma._rangeDecoder.Init(inputStream); + } + else + { + if (presetDictionary != null) + { + lzma._outWindow.Train(presetDictionary); + lzma._needDictReset = false; + } + } + return lzma; + } + + private LzmaStream(LzmaEncoderProperties properties, bool isLzma2) { _isLzma2 = isLzma2; _availableBytes = 0; @@ -159,17 +177,30 @@ Stream outputStream var prop = new byte[5]; _encoder.WriteCoderProperties(prop); Properties = prop; + } - _encoder.SetStreams(null, outputStream, -1, -1); + public static LzmaStream Create( + LzmaEncoderProperties properties, + bool isLzma2, + Stream outputStream + ) => Create(properties, isLzma2, null, outputStream); -#if DEBUG_STREAMS - this.DebugConstruct(typeof(LzmaStream)); -#endif + public static LzmaStream Create( + LzmaEncoderProperties properties, + bool isLzma2, + Stream? presetDictionary, + Stream outputStream + ) + { + var lzma = new LzmaStream(properties, isLzma2); + + lzma._encoder!.SetStreams(null, outputStream, -1, -1); if (presetDictionary != null) { - _encoder.Train(presetDictionary); + lzma._encoder.Train(presetDictionary); } + return lzma; } public override bool CanRead => _encoder == null; @@ -250,7 +281,7 @@ public override int Read(byte[] buffer, int offset, int count) { _inputPosition += _outWindow.CopyStream(_inputStream, toProcess); } - else if (_decoder.Code(_dictionarySize, _outWindow, _rangeDecoder) && _outputSize < 0) + else if (_decoder!.Code(_dictionarySize, _outWindow, _rangeDecoder) && _outputSize < 0) { _availableBytes = _outWindow.AvailableBytes; } @@ -271,7 +302,7 @@ public override int Read(byte[] buffer, int offset, int count) { // Stream might have End Of Stream marker _outWindow.SetLimit(toProcess + 1); - if (!_decoder.Code(_dictionarySize, _outWindow, _rangeDecoder)) + if (!_decoder!.Code(_dictionarySize, _outWindow, _rangeDecoder)) { _rangeDecoder.ReleaseStream(); throw new DataErrorException(); @@ -341,7 +372,7 @@ public override int ReadByte() { _inputPosition += _outWindow.CopyStream(_inputStream, 1); } - else if (_decoder.Code(_dictionarySize, _outWindow, _rangeDecoder) && _outputSize < 0) + else if (_decoder!.Code(_dictionarySize, _outWindow, _rangeDecoder) && _outputSize < 0) { _availableBytes = _outWindow.AvailableBytes; } @@ -360,7 +391,7 @@ public override int ReadByte() { // Stream might have End Of Stream marker _outWindow.SetLimit(2); - if (!_decoder.Code(_dictionarySize, _outWindow, _rangeDecoder)) + if (!_decoder!.Code(_dictionarySize, _outWindow, _rangeDecoder)) { _rangeDecoder.ReleaseStream(); throw new DataErrorException(); @@ -381,7 +412,7 @@ public override int ReadByte() private void DecodeChunkHeader() { - var control = _inputStream.ReadByte(); + var control = _inputStream!.ReadByte(); _inputPosition++; if (control == 0x00) @@ -445,90 +476,6 @@ private void DecodeChunkHeader() } } - private async ValueTask DecodeChunkHeaderAsync(CancellationToken cancellationToken = default) - { - var controlBuffer = new byte[1]; - await _inputStream - .ReadExactAsync(controlBuffer, 0, 1, cancellationToken) - .ConfigureAwait(false); - var control = controlBuffer[0]; - _inputPosition++; - - if (control == 0x00) - { - _endReached = true; - return; - } - - if (control >= 0xE0 || control == 0x01) - { - _needProps = true; - _needDictReset = false; - _outWindow.Reset(); - } - else if (_needDictReset) - { - throw new DataErrorException(); - } - - if (control >= 0x80) - { - _uncompressedChunk = false; - - _availableBytes = (control & 0x1F) << 16; - var buffer = new byte[2]; - await _inputStream - .ReadExactAsync(buffer, 0, 2, cancellationToken) - .ConfigureAwait(false); - _availableBytes += (buffer[0] << 8) + buffer[1] + 1; - _inputPosition += 2; - - await _inputStream - .ReadExactAsync(buffer, 0, 2, cancellationToken) - .ConfigureAwait(false); - _rangeDecoderLimit = (buffer[0] << 8) + buffer[1] + 1; - _inputPosition += 2; - - if (control >= 0xC0) - { - _needProps = false; - await _inputStream - .ReadExactAsync(controlBuffer, 0, 1, cancellationToken) - .ConfigureAwait(false); - Properties[0] = controlBuffer[0]; - _inputPosition++; - - _decoder = new Decoder(); - _decoder.SetDecoderProperties(Properties); - } - else if (_needProps) - { - throw new DataErrorException(); - } - else if (control >= 0xA0) - { - _decoder = new Decoder(); - _decoder.SetDecoderProperties(Properties); - } - - _rangeDecoder.Init(_inputStream); - } - else if (control > 0x02) - { - throw new DataErrorException(); - } - else - { - _uncompressedChunk = true; - var buffer = new byte[2]; - await _inputStream - .ReadExactAsync(buffer, 0, 2, cancellationToken) - .ConfigureAwait(false); - _availableBytes = (buffer[0] << 8) + buffer[1] + 1; - _inputPosition += 2; - } - } - public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); public override void SetLength(long value) => throw new NotSupportedException(); @@ -541,241 +488,5 @@ public override void Write(byte[] buffer, int offset, int count) } } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (_endReached) - { - return 0; - } - - var total = 0; - while (total < count) - { - cancellationToken.ThrowIfCancellationRequested(); - - if (_availableBytes == 0) - { - if (_isLzma2) - { - await DecodeChunkHeaderAsync(cancellationToken).ConfigureAwait(false); - } - else - { - _endReached = true; - } - if (_endReached) - { - break; - } - } - - var toProcess = count - total; - if (toProcess > _availableBytes) - { - toProcess = (int)_availableBytes; - } - - _outWindow.SetLimit(toProcess); - if (_uncompressedChunk) - { - _inputPosition += await _outWindow - .CopyStreamAsync(_inputStream, toProcess, cancellationToken) - .ConfigureAwait(false); - } - else if ( - await _decoder - .CodeAsync(_dictionarySize, _outWindow, _rangeDecoder, cancellationToken) - .ConfigureAwait(false) - && _outputSize < 0 - ) - { - _availableBytes = _outWindow.AvailableBytes; - } - - var read = _outWindow.Read(buffer, offset, toProcess); - total += read; - offset += read; - _position += read; - _availableBytes -= read; - - if (_availableBytes == 0 && !_uncompressedChunk) - { - if ( - !_rangeDecoder.IsFinished - || (_rangeDecoderLimit >= 0 && _rangeDecoder._total != _rangeDecoderLimit) - ) - { - _outWindow.SetLimit(toProcess + 1); - if ( - !await _decoder - .CodeAsync( - _dictionarySize, - _outWindow, - _rangeDecoder, - cancellationToken - ) - .ConfigureAwait(false) - ) - { - _rangeDecoder.ReleaseStream(); - throw new DataErrorException(); - } - } - - _rangeDecoder.ReleaseStream(); - - _inputPosition += _rangeDecoder._total; - if (_outWindow.HasPending) - { - throw new DataErrorException(); - } - } - } - - if (_endReached) - { - if (_inputSize >= 0 && _inputPosition != _inputSize) - { - throw new DataErrorException(); - } - if (_outputSize >= 0 && _position != _outputSize) - { - throw new DataErrorException(); - } - } - - return total; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - if (_endReached) - { - return 0; - } - - var total = 0; - var offset = 0; - var count = buffer.Length; - while (total < count) - { - cancellationToken.ThrowIfCancellationRequested(); - - if (_availableBytes == 0) - { - if (_isLzma2) - { - await DecodeChunkHeaderAsync(cancellationToken).ConfigureAwait(false); - } - else - { - _endReached = true; - } - if (_endReached) - { - break; - } - } - - var toProcess = count - total; - if (toProcess > _availableBytes) - { - toProcess = (int)_availableBytes; - } - - _outWindow.SetLimit(toProcess); - if (_uncompressedChunk) - { - _inputPosition += await _outWindow - .CopyStreamAsync(_inputStream, toProcess, cancellationToken) - .ConfigureAwait(false); - } - else if ( - await _decoder - .CodeAsync(_dictionarySize, _outWindow, _rangeDecoder, cancellationToken) - .ConfigureAwait(false) - && _outputSize < 0 - ) - { - _availableBytes = _outWindow.AvailableBytes; - } - - var read = _outWindow.Read(buffer, offset, toProcess); - total += read; - offset += read; - _position += read; - _availableBytes -= read; - - if (_availableBytes == 0 && !_uncompressedChunk) - { - if ( - !_rangeDecoder.IsFinished - || (_rangeDecoderLimit >= 0 && _rangeDecoder._total != _rangeDecoderLimit) - ) - { - _outWindow.SetLimit(toProcess + 1); - if ( - !await _decoder - .CodeAsync( - _dictionarySize, - _outWindow, - _rangeDecoder, - cancellationToken - ) - .ConfigureAwait(false) - ) - { - _rangeDecoder.ReleaseStream(); - throw new DataErrorException(); - } - } - - _rangeDecoder.ReleaseStream(); - - _inputPosition += _rangeDecoder._total; - if (_outWindow.HasPending) - { - throw new DataErrorException(); - } - } - } - - if (_endReached) - { - if (_inputSize >= 0 && _inputPosition != _inputSize) - { - throw new DataErrorException(); - } - if (_outputSize >= 0 && _position != _outputSize) - { - throw new DataErrorException(); - } - } - - return total; - } -#endif - - public override Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - cancellationToken.ThrowIfCancellationRequested(); - Write(buffer, offset, count); - return Task.CompletedTask; - } - public byte[] Properties { get; } = new byte[5]; } diff --git a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.Async.cs b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.Async.cs new file mode 100644 index 000000000..d69f08a92 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.Async.cs @@ -0,0 +1,194 @@ +#nullable disable + +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.LZMA.RangeCoder; + +internal partial class Encoder +{ + public async ValueTask ShiftLowAsync(CancellationToken cancellationToken = default) + { + if ((uint)_low < 0xFF000000 || (uint)(_low >> 32) == 1) + { + var temp = _cache; + do + { + var b = (byte)(temp + (_low >> 32)); + var buffer = new[] { b }; + await _stream.WriteAsync(buffer, 0, 1, cancellationToken).ConfigureAwait(false); + temp = 0xFF; + } while (--_cacheSize != 0); + _cache = (byte)(((uint)_low) >> 24); + } + _cacheSize++; + _low = ((uint)_low) << 8; + } + + public async ValueTask EncodeBitAsync( + uint size0, + int numTotalBits, + uint symbol, + CancellationToken cancellationToken = default + ) + { + var newBound = (_range >> numTotalBits) * size0; + if (symbol == 0) + { + _range = newBound; + } + else + { + _low += newBound; + _range -= newBound; + } + while (_range < K_TOP_VALUE) + { + _range <<= 8; + await ShiftLowAsync(cancellationToken).ConfigureAwait(false); + } + } + + public async ValueTask EncodeDirectBitsAsync( + uint v, + int numTotalBits, + CancellationToken cancellationToken = default + ) + { + for (var i = numTotalBits - 1; i >= 0; i--) + { + _range >>= 1; + if (((v >> i) & 1) == 1) + { + _low += _range; + } + if (_range < K_TOP_VALUE) + { + _range <<= 8; + await ShiftLowAsync(cancellationToken).ConfigureAwait(false); + } + } + } + + public async ValueTask FlushStreamAsync(CancellationToken cancellationToken = default) => + await _stream.FlushAsync(cancellationToken).ConfigureAwait(false); +} + +internal partial class Decoder +{ + public async ValueTask InitAsync(Stream stream, CancellationToken cancellationToken = default) + { + _stream = stream; + + _code = 0; + _range = 0xFFFFFFFF; + var buffer = new byte[1]; + for (var i = 0; i < 5; i++) + { + var read = await _stream + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (read == 0) + { + throw new EndOfStreamException(); + } + _code = (_code << 8) | buffer[0]; + } + _total = 5; + } + + public async ValueTask NormalizeAsync(CancellationToken cancellationToken = default) + { + while (_range < K_TOP_VALUE) + { + var buffer = new byte[1]; + var read = await _stream + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (read == 0) + { + throw new EndOfStreamException(); + } + _code = (_code << 8) | buffer[0]; + _range <<= 8; + _total++; + } + } + + public async ValueTask Normalize2Async(CancellationToken cancellationToken = default) + { + if (_range < K_TOP_VALUE) + { + var buffer = new byte[1]; + var read = await _stream + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (read == 0) + { + throw new EndOfStreamException(); + } + _code = (_code << 8) | buffer[0]; + _range <<= 8; + _total++; + } + } + + public async ValueTask DecodeDirectBitsAsync( + int numTotalBits, + CancellationToken cancellationToken = default + ) + { + var range = _range; + var code = _code; + uint result = 0; + var buffer = new byte[1]; + for (var i = numTotalBits; i > 0; i--) + { + range >>= 1; + var t = (code - range) >> 31; + code -= range & (t - 1); + result = (result << 1) | (1 - t); + + if (range < K_TOP_VALUE) + { + var read = await _stream + .ReadAsync(buffer, 0, 1, cancellationToken) + .ConfigureAwait(false); + if (read == 0) + { + throw new EndOfStreamException(); + } + code = (code << 8) | buffer[0]; + range <<= 8; + _total++; + } + } + _range = range; + _code = code; + return result; + } + + public async ValueTask DecodeBitAsync( + uint size0, + int numTotalBits, + CancellationToken cancellationToken = default + ) + { + var newBound = (_range >> numTotalBits) * size0; + uint symbol; + if (_code < newBound) + { + symbol = 0; + _range = newBound; + } + else + { + symbol = 1; + _code -= newBound; + _range -= newBound; + } + await NormalizeAsync(cancellationToken).ConfigureAwait(false); + return symbol; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.cs b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.cs index 23b3b0b9d..e29a1c375 100644 --- a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.cs +++ b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoder.cs @@ -5,7 +5,7 @@ namespace SharpCompress.Compressors.LZMA.RangeCoder; -internal class Encoder +internal partial class Encoder { public const uint K_TOP_VALUE = (1 << 24); @@ -44,17 +44,6 @@ public void FlushData() public void CloseStream() => _stream.Dispose(); - public void Encode(uint start, uint size, uint total) - { - _low += start * (_range /= total); - _range *= size; - while (_range < K_TOP_VALUE) - { - _range <<= 8; - ShiftLow(); - } - } - public void ShiftLow() { if ((uint)_low < 0xFF000000 || (uint)(_low >> 32) == 1) @@ -88,44 +77,20 @@ public void EncodeDirectBits(uint v, int numTotalBits) } } - public void EncodeBit(uint size0, int numTotalBits, uint symbol) - { - var newBound = (_range >> numTotalBits) * size0; - if (symbol == 0) - { - _range = newBound; - } - else - { - _low += newBound; - _range -= newBound; - } - while (_range < K_TOP_VALUE) - { - _range <<= 8; - ShiftLow(); - } - } - public long GetProcessedSizeAdd() => -1; - - //return _cacheSize + Stream.Position - StartPosition + 4; - // (long)Stream.GetProcessedSize(); } -internal class Decoder +internal partial class Decoder { public const uint K_TOP_VALUE = (1 << 24); public uint _range; public uint _code; - // public Buffer.InBuffer Stream = new Buffer.InBuffer(1 << 16); public Stream _stream; public long _total; public void Init(Stream stream) { - // Stream.Init(stream); _stream = stream; _code = 0; @@ -141,8 +106,6 @@ public void ReleaseStream() => // Stream.ReleaseStream(); _stream = null; - public void CloseStream() => _stream.Dispose(); - public void Normalize() { while (_range < K_TOP_VALUE) @@ -181,14 +144,6 @@ public uint DecodeDirectBits(int numTotalBits) for (var i = numTotalBits; i > 0; i--) { range >>= 1; - /* - result <<= 1; - if (code >= range) - { - code -= range; - result |= 1; - } - */ var t = (code - range) >> 31; code -= range & (t - 1); result = (result << 1) | (1 - t); diff --git a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.Async.cs b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.Async.cs new file mode 100644 index 000000000..8de17dd95 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.Async.cs @@ -0,0 +1,62 @@ +#nullable disable + +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.LZMA.RangeCoder; + +internal partial struct BitEncoder +{ + public ValueTask EncodeAsync( + Encoder encoder, + uint symbol, + CancellationToken cancellationToken = default + ) + { + var newBound = (encoder._range >> K_NUM_BIT_MODEL_TOTAL_BITS) * _prob; + if (symbol == 0) + { + encoder._range = newBound; + _prob += (K_BIT_MODEL_TOTAL - _prob) >> K_NUM_MOVE_BITS; + } + else + { + encoder._low += newBound; + encoder._range -= newBound; + _prob -= (_prob) >> K_NUM_MOVE_BITS; + } + if (encoder._range < Encoder.K_TOP_VALUE) + { + encoder._range <<= 8; + return encoder.ShiftLowAsync(cancellationToken); + } + return default; + } +} + +internal partial struct BitDecoder +{ + public ValueTask DecodeAsync( + Decoder decoder, + CancellationToken cancellationToken = default + ) + { + var newBound = (decoder._range >> K_NUM_BIT_MODEL_TOTAL_BITS) * _prob; + if (decoder._code < newBound) + { + decoder._range = newBound; + _prob += (K_BIT_MODEL_TOTAL - _prob) >> K_NUM_MOVE_BITS; + return DecodeAsyncHelper(decoder.Normalize2Async(cancellationToken), 0); + } + decoder._range -= newBound; + decoder._code -= newBound; + _prob -= (_prob) >> K_NUM_MOVE_BITS; + return DecodeAsyncHelper(decoder.Normalize2Async(cancellationToken), 1); + } + + private static async ValueTask DecodeAsyncHelper(ValueTask normalizeTask, uint result) + { + await normalizeTask.ConfigureAwait(false); + return result; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.cs b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.cs index 562b2356d..cbdc0943d 100644 --- a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.cs +++ b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBit.cs @@ -1,6 +1,6 @@ namespace SharpCompress.Compressors.LZMA.RangeCoder; -internal struct BitEncoder +internal partial struct BitEncoder { public const int K_NUM_BIT_MODEL_TOTAL_BITS = 11; public const uint K_BIT_MODEL_TOTAL = (1 << K_NUM_BIT_MODEL_TOTAL_BITS); @@ -26,8 +26,6 @@ public void UpdateModel(uint symbol) public void Encode(Encoder encoder, uint symbol) { - // encoder.EncodeBit(Prob, kNumBitModelTotalBits, symbol); - // UpdateModel(symbol); var newBound = (encoder._range >> K_NUM_BIT_MODEL_TOTAL_BITS) * _prob; if (symbol == 0) { @@ -78,7 +76,7 @@ public uint GetPrice(uint symbol) => public uint GetPrice1() => PROB_PRICES[(K_BIT_MODEL_TOTAL - _prob) >> K_NUM_MOVE_REDUCING_BITS]; } -internal struct BitDecoder +internal partial struct BitDecoder { public const int K_NUM_BIT_MODEL_TOTAL_BITS = 11; public const uint K_BIT_MODEL_TOTAL = (1 << K_NUM_BIT_MODEL_TOTAL_BITS); @@ -86,18 +84,6 @@ internal struct BitDecoder private uint _prob; - public void UpdateModel(int numMoveBits, uint symbol) - { - if (symbol == 0) - { - _prob += (K_BIT_MODEL_TOTAL - _prob) >> numMoveBits; - } - else - { - _prob -= (_prob) >> numMoveBits; - } - } - public void Init() => _prob = K_BIT_MODEL_TOTAL >> 1; public uint Decode(Decoder rangeDecoder) diff --git a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.Async.cs b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.Async.cs new file mode 100644 index 000000000..8766156a9 --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.Async.cs @@ -0,0 +1,127 @@ +#nullable disable + +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.LZMA.RangeCoder; + +internal readonly partial struct BitTreeEncoder +{ + public async ValueTask EncodeAsync( + Encoder rangeEncoder, + uint symbol, + CancellationToken cancellationToken = default + ) + { + uint m = 1; + for (var bitIndex = _numBitLevels; bitIndex > 0; ) + { + bitIndex--; + var bit = (symbol >> bitIndex) & 1; + await _models[m] + .EncodeAsync(rangeEncoder, bit, cancellationToken) + .ConfigureAwait(false); + m = (m << 1) | bit; + } + } + + public async ValueTask ReverseEncodeAsync( + Encoder rangeEncoder, + uint symbol, + CancellationToken cancellationToken = default + ) + { + uint m = 1; + for (uint i = 0; i < _numBitLevels; i++) + { + var bit = symbol & 1; + await _models[m] + .EncodeAsync(rangeEncoder, bit, cancellationToken) + .ConfigureAwait(false); + m = (m << 1) | bit; + symbol >>= 1; + } + } + + public static async ValueTask ReverseEncodeAsync( + BitEncoder[] models, + uint startIndex, + Encoder rangeEncoder, + int numBitLevels, + uint symbol, + CancellationToken cancellationToken = default + ) + { + uint m = 1; + for (var i = 0; i < numBitLevels; i++) + { + var bit = symbol & 1; + await models[startIndex + m] + .EncodeAsync(rangeEncoder, bit, cancellationToken) + .ConfigureAwait(false); + m = (m << 1) | bit; + symbol >>= 1; + } + } +} + +internal readonly partial struct BitTreeDecoder +{ + public async ValueTask DecodeAsync( + Decoder rangeDecoder, + CancellationToken cancellationToken = default + ) + { + uint m = 1; + for (var bitIndex = _numBitLevels; bitIndex > 0; bitIndex--) + { + m = + (m << 1) + + await _models[m] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + } + return m - ((uint)1 << _numBitLevels); + } + + public async ValueTask ReverseDecodeAsync( + Decoder rangeDecoder, + CancellationToken cancellationToken = default + ) + { + uint m = 1; + uint symbol = 0; + for (var bitIndex = 0; bitIndex < _numBitLevels; bitIndex++) + { + var bit = await _models[m] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + m <<= 1; + m += bit; + symbol |= (bit << bitIndex); + } + return symbol; + } + + public static async ValueTask ReverseDecodeAsync( + BitDecoder[] models, + uint startIndex, + Decoder rangeDecoder, + int numBitLevels, + CancellationToken cancellationToken = default + ) + { + uint m = 1; + uint symbol = 0; + for (var bitIndex = 0; bitIndex < numBitLevels; bitIndex++) + { + var bit = await models[startIndex + m] + .DecodeAsync(rangeDecoder, cancellationToken) + .ConfigureAwait(false); + m <<= 1; + m += bit; + symbol |= (bit << bitIndex); + } + return symbol; + } +} diff --git a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.cs b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.cs index b6a66e827..61ccafcd7 100644 --- a/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.cs +++ b/src/SharpCompress/Compressors/LZMA/RangeCoder/RangeCoderBitTree.cs @@ -1,6 +1,6 @@ namespace SharpCompress.Compressors.LZMA.RangeCoder; -internal readonly struct BitTreeEncoder +internal readonly partial struct BitTreeEncoder { private readonly BitEncoder[] _models; private readonly int _numBitLevels; @@ -109,7 +109,7 @@ uint symbol } } -internal readonly struct BitTreeDecoder +internal readonly partial struct BitTreeDecoder { private readonly BitDecoder[] _models; private readonly int _numBitLevels; diff --git a/src/SharpCompress/Compressors/LZMA/Registry.cs b/src/SharpCompress/Compressors/LZMA/Registry.cs index d71abded2..8de8f841c 100644 --- a/src/SharpCompress/Compressors/LZMA/Registry.cs +++ b/src/SharpCompress/Compressors/LZMA/Registry.cs @@ -51,7 +51,7 @@ long limit return new DeltaFilter(false, inStreams.Single(), info); case K_LZMA: case K_LZMA2: - return new LzmaStream(info, inStreams.Single(), -1, limit); + return LzmaStream.Create(info, inStreams.Single(), -1, limit); case CMethodId.K_AES_ID: return new AesDecoderStream(inStreams.Single(), info, pass, limit); case K_BCJ: @@ -73,7 +73,7 @@ long limit case K_RISCV: return new BCJFilterRISCV(false, inStreams.Single()); case K_B_ZIP2: - return new BZip2Stream(inStreams.Single(), CompressionMode.Decompress, true); + return BZip2Stream.Create(inStreams.Single(), CompressionMode.Decompress, true); case K_PPMD: return new PpmdStream(new PpmdProperties(info), inStreams.Single(), false); case K_DEFLATE: diff --git a/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.Async.cs b/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.Async.cs new file mode 100644 index 000000000..8cf2d974b --- /dev/null +++ b/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.Async.cs @@ -0,0 +1,28 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.LZMA.Utilites; + +internal partial class CrcBuilderStream : Stream, IStreamStack +{ + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + if (_mFinished) + { + throw new InvalidOperationException("CRC calculation has been finished."); + } + + Processed += count; + _mCrc = Crc.Update(_mCrc, buffer, offset, count); + await _mTarget.WriteAsync(buffer, offset, count, cancellationToken); + } +} diff --git a/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.cs b/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.cs index 015ff7447..14c2b7734 100644 --- a/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.cs +++ b/src/SharpCompress/Compressors/LZMA/Utilites/CrcBuilderStream.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Compressors.LZMA.Utilites; -internal class CrcBuilderStream : Stream, IStreamStack +internal partial class CrcBuilderStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -103,22 +103,4 @@ public override void Write(byte[] buffer, int offset, int count) _mCrc = Crc.Update(_mCrc, buffer, offset, count); _mTarget.Write(buffer, offset, count); } - - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - if (_mFinished) - { - throw new InvalidOperationException("CRC calculation has been finished."); - } - - Processed += count; - _mCrc = Crc.Update(_mCrc, buffer, offset, count); - await _mTarget.WriteAsync(buffer, offset, count, cancellationToken); - } } diff --git a/src/SharpCompress/Compressors/Lzw/LzwStream.Async.cs b/src/SharpCompress/Compressors/Lzw/LzwStream.Async.cs new file mode 100644 index 000000000..ae695080c --- /dev/null +++ b/src/SharpCompress/Compressors/Lzw/LzwStream.Async.cs @@ -0,0 +1,373 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Lzw +{ + public partial class LzwStream + { + /// + /// Asynchronously checks if the stream is an LZW stream + /// + /// The stream to read from + /// Cancellation token + /// True if the stream is an LZW stream, false otherwise + public static async ValueTask IsLzwStreamAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + try + { + byte[] hdr = new byte[LzwConstants.HDR_SIZE]; + + int result = await stream.ReadAsync(hdr, 0, hdr.Length, cancellationToken); + + // Check the magic marker + if (result < 0) + { + throw new IncompleteArchiveException("Failed to read LZW header"); + } + + if (hdr[0] != (LzwConstants.MAGIC >> 8) || hdr[1] != (LzwConstants.MAGIC & 0xff)) + { + throw new IncompleteArchiveException( + String.Format( + "Wrong LZW header. Magic bytes don't match. 0x{0:x2} 0x{1:x2}", + hdr[0], + hdr[1] + ) + ); + } + } + catch (Exception) + { + return false; + } + return true; + } + + /// + /// Reads decompressed data asynchronously into the provided buffer byte array + /// + /// The array to read and decompress data into + /// The offset indicating where the data should be placed + /// The number of bytes to decompress + /// Cancellation token + /// The number of bytes read. Zero signals the end of stream + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (!headerParsed) + { + await ParseHeaderAsync(cancellationToken).ConfigureAwait(false); + } + + if (eof) + { + return 0; + } + + int start = offset; + + int[] lTabPrefix = tabPrefix; + byte[] lTabSuffix = tabSuffix; + byte[] lStack = stack; + int lNBits = nBits; + int lMaxCode = maxCode; + int lMaxMaxCode = maxMaxCode; + int lBitMask = bitMask; + int lOldCode = oldCode; + byte lFinChar = finChar; + int lStackP = stackP; + int lFreeEnt = freeEnt; + byte[] lData = data; + int lBitPos = bitPos; + + int sSize = lStack.Length - lStackP; + if (sSize > 0) + { + int num = (sSize >= count) ? count : sSize; + Array.Copy(lStack, lStackP, buffer, offset, num); + offset += num; + count -= num; + lStackP += num; + } + + if (count == 0) + { + stackP = lStackP; + return offset - start; + } + + MainLoop: + do + { + if (end < EXTRA) + { + await FillAsync(cancellationToken).ConfigureAwait(false); + } + + int bitIn = (got > 0) ? (end - end % lNBits) << 3 : (end << 3) - (lNBits - 1); + + while (lBitPos < bitIn) + { + if (count == 0) + { + nBits = lNBits; + maxCode = lMaxCode; + maxMaxCode = lMaxMaxCode; + bitMask = lBitMask; + oldCode = lOldCode; + finChar = lFinChar; + stackP = lStackP; + freeEnt = lFreeEnt; + bitPos = lBitPos; + + return offset - start; + } + + if (lFreeEnt > lMaxCode) + { + int nBytes = lNBits << 3; + lBitPos = (lBitPos - 1) + nBytes - (lBitPos - 1 + nBytes) % nBytes; + + lNBits++; + lMaxCode = (lNBits == maxBits) ? lMaxMaxCode : (1 << lNBits) - 1; + + lBitMask = (1 << lNBits) - 1; + lBitPos = ResetBuf(lBitPos); + goto MainLoop; + } + + int pos = lBitPos >> 3; + int code = + ( + ( + (lData[pos] & 0xFF) + | ((lData[pos + 1] & 0xFF) << 8) + | ((lData[pos + 2] & 0xFF) << 16) + ) >> (lBitPos & 0x7) + ) & lBitMask; + + lBitPos += lNBits; + + if (lOldCode == -1) + { + if (code >= 256) + { + throw new IncompleteArchiveException( + "corrupt input: " + code + " > 255" + ); + } + + lFinChar = (byte)(lOldCode = code); + buffer[offset++] = lFinChar; + count--; + continue; + } + + if (code == TBL_CLEAR && blockMode) + { + Array.Copy(zeros, 0, lTabPrefix, 0, zeros.Length); + lFreeEnt = TBL_FIRST - 1; + + int nBytes = lNBits << 3; + lBitPos = (lBitPos - 1) + nBytes - (lBitPos - 1 + nBytes) % nBytes; + lNBits = LzwConstants.INIT_BITS; + lMaxCode = (1 << lNBits) - 1; + lBitMask = lMaxCode; + + lBitPos = ResetBuf(lBitPos); + goto MainLoop; + } + + int inCode = code; + lStackP = lStack.Length; + + if (code >= lFreeEnt) + { + if (code > lFreeEnt) + { + throw new IncompleteArchiveException( + "corrupt input: code=" + code + ", freeEnt=" + lFreeEnt + ); + } + + lStack[--lStackP] = lFinChar; + code = lOldCode; + } + + while (code >= 256) + { + lStack[--lStackP] = lTabSuffix[code]; + code = lTabPrefix[code]; + } + + lFinChar = lTabSuffix[code]; + buffer[offset++] = lFinChar; + count--; + + sSize = lStack.Length - lStackP; + int num = (sSize >= count) ? count : sSize; + Array.Copy(lStack, lStackP, buffer, offset, num); + offset += num; + count -= num; + lStackP += num; + + if (lFreeEnt < lMaxMaxCode) + { + lTabPrefix[lFreeEnt] = lOldCode; + lTabSuffix[lFreeEnt] = lFinChar; + lFreeEnt++; + } + + lOldCode = inCode; + + if (count == 0) + { + nBits = lNBits; + maxCode = lMaxCode; + bitMask = lBitMask; + oldCode = lOldCode; + finChar = lFinChar; + stackP = lStackP; + freeEnt = lFreeEnt; + bitPos = lBitPos; + + return offset - start; + } + } + + lBitPos = ResetBuf(lBitPos); + } while (got > 0); + + nBits = lNBits; + maxCode = lMaxCode; + bitMask = lBitMask; + oldCode = lOldCode; + finChar = lFinChar; + stackP = lStackP; + freeEnt = lFreeEnt; + bitPos = lBitPos; + + eof = true; + return offset - start; + } + +#if !LEGACY_DOTNET + /// + /// Reads decompressed data asynchronously into the provided buffer + /// + /// The memory to read and decompress data into + /// Cancellation token + /// The number of bytes read. Zero signals the end of stream + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (buffer.IsEmpty) + { + return 0; + } + + byte[] array = System.Buffers.ArrayPool.Shared.Rent(buffer.Length); + try + { + int read = await ReadAsync(array, 0, buffer.Length, cancellationToken) + .ConfigureAwait(false); + array.AsSpan(0, read).CopyTo(buffer.Span); + return read; + } + finally + { + System.Buffers.ArrayPool.Shared.Return(array); + } + } +#endif + + private async ValueTask FillAsync(CancellationToken cancellationToken) + { + cancellationToken.ThrowIfCancellationRequested(); + got = await baseInputStream + .ReadAsync(data, end, data.Length - 1 - end, cancellationToken) + .ConfigureAwait(false); + if (got > 0) + { + end += got; + } + } + + private async ValueTask ParseHeaderAsync(CancellationToken cancellationToken) + { + headerParsed = true; + + byte[] hdr = new byte[LzwConstants.HDR_SIZE]; + + int result = await baseInputStream + .ReadAsync(hdr, 0, hdr.Length, cancellationToken) + .ConfigureAwait(false); + + if (result < 0) + { + throw new IncompleteArchiveException("Failed to read LZW header"); + } + + if (hdr[0] != (LzwConstants.MAGIC >> 8) || hdr[1] != (LzwConstants.MAGIC & 0xff)) + { + throw new IncompleteArchiveException( + String.Format( + "Wrong LZW header. Magic bytes don't match. 0x{0:x2} 0x{1:x2}", + hdr[0], + hdr[1] + ) + ); + } + + blockMode = (hdr[2] & LzwConstants.BLOCK_MODE_MASK) > 0; + maxBits = hdr[2] & LzwConstants.BIT_MASK; + + if (maxBits > LzwConstants.MAX_BITS) + { + throw new ArchiveException( + "Stream compressed with " + + maxBits + + " bits, but decompression can only handle " + + LzwConstants.MAX_BITS + + " bits." + ); + } + + if ((hdr[2] & LzwConstants.RESERVED_MASK) > 0) + { + throw new ArchiveException("Unsupported bits set in the header."); + } + + maxMaxCode = 1 << maxBits; + nBits = LzwConstants.INIT_BITS; + maxCode = (1 << nBits) - 1; + bitMask = maxCode; + oldCode = -1; + finChar = 0; + freeEnt = blockMode ? TBL_FIRST : 256; + + tabPrefix = new int[1 << maxBits]; + tabSuffix = new byte[1 << maxBits]; + stack = new byte[1 << maxBits]; + stackP = stack.Length; + + for (int idx = 255; idx >= 0; idx--) + { + tabSuffix[idx] = (byte)idx; + } + } + } +} diff --git a/src/SharpCompress/Compressors/Lzw/LzwStream.cs b/src/SharpCompress/Compressors/Lzw/LzwStream.cs index 71132dac0..d213bb12f 100644 --- a/src/SharpCompress/Compressors/Lzw/LzwStream.cs +++ b/src/SharpCompress/Compressors/Lzw/LzwStream.cs @@ -1,5 +1,7 @@ using System; using System.IO; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common; using SharpCompress.IO; @@ -43,7 +45,7 @@ namespace SharpCompress.Compressors.Lzw /// } /// /// - public class LzwStream : Stream, IStreamStack + public partial class LzwStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -75,7 +77,9 @@ public static bool IsLzwStream(Stream stream) // Check the magic marker if (result < 0) + { throw new IncompleteArchiveException("Failed to read LZW header"); + } if (hdr[0] != (LzwConstants.MAGIC >> 8) || hdr[1] != (LzwConstants.MAGIC & 0xff)) { @@ -124,7 +128,10 @@ public override int ReadByte() { int b = Read(one, 0, 1); if (b == 1) + { return (one[0] & 0xff); + } + return -1; } @@ -144,10 +151,14 @@ public override int ReadByte() public override int Read(byte[] buffer, int offset, int count) { if (!headerParsed) + { ParseHeader(); + } if (eof) + { return 0; + } int start = offset; @@ -251,9 +262,11 @@ public override int Read(byte[] buffer, int offset, int count) if (lOldCode == -1) { if (code >= 256) + { throw new IncompleteArchiveException( "corrupt input: " + code + " > 255" ); + } lFinChar = (byte)(lOldCode = code); buffer[offset++] = lFinChar; @@ -402,7 +415,9 @@ private void ParseHeader() // Check the magic marker if (result < 0) + { throw new IncompleteArchiveException("Failed to read LZW header"); + } if (hdr[0] != (LzwConstants.MAGIC >> 8) || hdr[1] != (LzwConstants.MAGIC & 0xff)) { @@ -450,7 +465,9 @@ private void ParseHeader() stackP = stack.Length; for (int idx = 255; idx >= 0; idx--) + { tabSuffix[idx] = (byte)idx; + } } #region Stream Overrides diff --git a/src/SharpCompress/Compressors/RLE90/RunLength90Stream.cs b/src/SharpCompress/Compressors/RLE90/RunLength90Stream.cs index ae807f4d7..b45769ab7 100644 --- a/src/SharpCompress/Compressors/RLE90/RunLength90Stream.cs +++ b/src/SharpCompress/Compressors/RLE90/RunLength90Stream.cs @@ -82,9 +82,14 @@ public override void Write(byte[] buffer, int offset, int count) => public override int Read(byte[] buffer, int offset, int count) { if (buffer == null) + { throw new ArgumentNullException(nameof(buffer)); + } + if (offset < 0 || count < 0 || offset + count > buffer.Length) + { throw new ArgumentOutOfRangeException(); + } int bytesWritten = 0; diff --git a/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyAsyncStream.Async.cs b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyAsyncStream.Async.cs new file mode 100644 index 000000000..2d0bc2b87 --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyAsyncStream.Async.cs @@ -0,0 +1,169 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Rar; + +internal sealed partial class MultiVolumeReadOnlyAsyncStream + : MultiVolumeReadOnlyStreamBase, + IStreamStack +{ + internal static async ValueTask Create( + IAsyncEnumerable parts + ) + { + var stream = new MultiVolumeReadOnlyAsyncStream(parts); + await stream.filePartEnumerator.MoveNextAsync(); + stream.InitializeNextFilePart(); + return stream; + } + +#if NET8_0_OR_GREATER + public override async ValueTask DisposeAsync() + { + await base.DisposeAsync(); + if (filePartEnumerator != null) + { + await filePartEnumerator.DisposeAsync(); + } + currentStream = null; + } +#else + protected override void Dispose(bool disposing) + { + base.Dispose(disposing); + //acceptable for now? + filePartEnumerator.DisposeAsync().AsTask().GetAwaiter().GetResult(); + + currentStream = null; + } +#endif + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + var totalRead = 0; + var currentOffset = offset; + var currentCount = count; + while (currentCount > 0) + { + var readSize = currentCount; + if (currentCount > maxPosition - currentPosition) + { + readSize = (int)(maxPosition - currentPosition); + } + + var read = await currentStream + .NotNull() + .ReadAsync(buffer, currentOffset, readSize, cancellationToken) + .ConfigureAwait(false); + if (read < 0) + { + throw new EndOfStreamException(); + } + + currentPosition += read; + currentOffset += read; + currentCount -= read; + totalRead += read; + if ( + ((maxPosition - currentPosition) == 0) + && filePartEnumerator.Current.FileHeader.IsSplitAfter + ) + { + if (filePartEnumerator.Current.FileHeader.R4Salt != null) + { + throw new InvalidFormatException( + "Sharpcompress currently does not support multi-volume decryption." + ); + } + + var fileName = filePartEnumerator.Current.FileHeader.FileName; + if (!await filePartEnumerator.MoveNextAsync()) + { + throw new InvalidFormatException( + "Multi-part rar file is incomplete. Entry expects a new volume: " + + fileName + ); + } + + InitializeNextFilePart(); + } + else + { + break; + } + } + + return totalRead; + } + +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var totalRead = 0; + var currentOffset = 0; + var currentCount = buffer.Length; + while (currentCount > 0) + { + var readSize = currentCount; + if (currentCount > maxPosition - currentPosition) + { + readSize = (int)(maxPosition - currentPosition); + } + + var read = await currentStream + .NotNull() + .ReadAsync(buffer.Slice(currentOffset, readSize), cancellationToken) + .ConfigureAwait(false); + if (read < 0) + { + throw new EndOfStreamException(); + } + + currentPosition += read; + currentOffset += read; + currentCount -= read; + totalRead += read; + if ( + ((maxPosition - currentPosition) == 0) + && filePartEnumerator.Current.FileHeader.IsSplitAfter + ) + { + if (filePartEnumerator.Current.FileHeader.R4Salt != null) + { + throw new InvalidFormatException( + "Sharpcompress currently does not support multi-volume decryption." + ); + } + var fileName = filePartEnumerator.Current.FileHeader.FileName; + if (!await filePartEnumerator.MoveNextAsync()) + { + throw new InvalidFormatException( + "Multi-part rar file is incomplete. Entry expects a new volume: " + + fileName + ); + } + InitializeNextFilePart(); + } + else + { + break; + } + } + return totalRead; + } +#endif +} diff --git a/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyAsyncStream.cs b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyAsyncStream.cs new file mode 100644 index 000000000..565ae2201 --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyAsyncStream.cs @@ -0,0 +1,85 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Rar; + +internal sealed partial class MultiVolumeReadOnlyAsyncStream + : MultiVolumeReadOnlyStreamBase, + IStreamStack +{ +#if DEBUG_STREAMS + long IStreamStack.InstanceId { get; set; } +#endif + int IStreamStack.DefaultBufferSize { get; set; } + + Stream IStreamStack.BaseStream() => currentStream.NotNull(); + + int IStreamStack.BufferSize + { + get => 0; + set { } + } + + int IStreamStack.BufferPosition + { + get => 0; + set { } + } + + void IStreamStack.SetPosition(long position) { } + + private long currentPosition; + private long maxPosition; + + private IAsyncEnumerator filePartEnumerator; + private Stream? currentStream; + + private MultiVolumeReadOnlyAsyncStream(IAsyncEnumerable parts) + { + filePartEnumerator = parts.GetAsyncEnumerator(); + } + + // Async methods moved to MultiVolumeReadOnlyAsyncStream.Async.cs + + private void InitializeNextFilePart() + { + maxPosition = filePartEnumerator.Current.FileHeader.CompressedSize; + currentPosition = 0; + currentStream = filePartEnumerator.Current.GetCompressedStream(); + + CurrentCrc = filePartEnumerator.Current.FileHeader.FileCrc; + } + + public override int Read(byte[] buffer, int offset, int count) => + throw new NotSupportedException( + "Synchronous read is not supported in MultiVolumeReadOnlyAsyncStream." + ); + + public override bool CanRead => true; + + public override bool CanSeek => false; + + public override bool CanWrite => false; + + public override void Flush() { } + + public override long Length => throw new NotSupportedException(); + + public override long Position + { + get => throw new NotSupportedException(); + set => throw new NotSupportedException(); + } + + public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); + + public override void SetLength(long value) => throw new NotSupportedException(); + + public override void Write(byte[] buffer, int offset, int count) => + throw new NotSupportedException(); +} diff --git a/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.Async.cs b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.Async.cs new file mode 100644 index 000000000..122ccda58 --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.Async.cs @@ -0,0 +1,138 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Rar; + +internal sealed partial class MultiVolumeReadOnlyStream + : MultiVolumeReadOnlyStreamBase, + IStreamStack +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + var totalRead = 0; + var currentOffset = offset; + var currentCount = count; + while (currentCount > 0) + { + var readSize = currentCount; + if (currentCount > maxPosition - currentPosition) + { + readSize = (int)(maxPosition - currentPosition); + } + + var read = await currentStream + .NotNull() + .ReadAsync(buffer, currentOffset, readSize, cancellationToken) + .ConfigureAwait(false); + if (read < 0) + { + throw new EndOfStreamException(); + } + + currentPosition += read; + currentOffset += read; + currentCount -= read; + totalRead += read; + if ( + ((maxPosition - currentPosition) == 0) + && filePartEnumerator.Current.FileHeader.IsSplitAfter + ) + { + if (filePartEnumerator.Current.FileHeader.R4Salt != null) + { + throw new InvalidFormatException( + "Sharpcompress currently does not support multi-volume decryption." + ); + } + + var fileName = filePartEnumerator.Current.FileHeader.FileName; + if (!filePartEnumerator.MoveNext()) + { + throw new InvalidFormatException( + "Multi-part rar file is incomplete. Entry expects a new volume: " + + fileName + ); + } + + InitializeNextFilePart(); + } + else + { + break; + } + } + + return totalRead; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var totalRead = 0; + var currentOffset = 0; + var currentCount = buffer.Length; + while (currentCount > 0) + { + var readSize = currentCount; + if (currentCount > maxPosition - currentPosition) + { + readSize = (int)(maxPosition - currentPosition); + } + + var read = await currentStream + .NotNull() + .ReadAsync(buffer.Slice(currentOffset, readSize), cancellationToken) + .ConfigureAwait(false); + if (read < 0) + { + throw new EndOfStreamException(); + } + + currentPosition += read; + currentOffset += read; + currentCount -= read; + totalRead += read; + if ( + ((maxPosition - currentPosition) == 0) + && filePartEnumerator.Current.FileHeader.IsSplitAfter + ) + { + if (filePartEnumerator.Current.FileHeader.R4Salt != null) + { + throw new InvalidFormatException( + "Sharpcompress currently does not support multi-volume decryption." + ); + } + var fileName = filePartEnumerator.Current.FileHeader.FileName; + if (!filePartEnumerator.MoveNext()) + { + throw new InvalidFormatException( + "Multi-part rar file is incomplete. Entry expects a new volume: " + + fileName + ); + } + InitializeNextFilePart(); + } + else + { + break; + } + } + return totalRead; + } +#endif +} diff --git a/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.cs b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.cs index 854b08853..9503cf03a 100644 --- a/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.cs +++ b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStream.cs @@ -1,5 +1,3 @@ -#nullable disable - using System; using System.Collections.Generic; using System.IO; @@ -9,20 +7,23 @@ namespace SharpCompress.Compressors.Rar; -internal sealed class MultiVolumeReadOnlyStream : Stream, IStreamStack +internal sealed partial class MultiVolumeReadOnlyStream + : MultiVolumeReadOnlyStreamBase, + IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } #endif int IStreamStack.DefaultBufferSize { get; set; } - Stream IStreamStack.BaseStream() => currentStream; + Stream IStreamStack.BaseStream() => currentStream.NotNull(); int IStreamStack.BufferSize { get => 0; set { } } + int IStreamStack.BufferPosition { get => 0; @@ -35,7 +36,7 @@ void IStreamStack.SetPosition(long position) { } private long maxPosition; private IEnumerator filePartEnumerator; - private Stream currentStream; + private Stream? currentStream; internal MultiVolumeReadOnlyStream(IEnumerable parts) { @@ -56,11 +57,8 @@ protected override void Dispose(bool disposing) this.DebugDispose(typeof(MultiVolumeReadOnlyStream)); #endif - if (filePartEnumerator != null) - { - filePartEnumerator.Dispose(); - filePartEnumerator = null; - } + filePartEnumerator.Dispose(); + currentStream = null; } } @@ -87,7 +85,7 @@ public override int Read(byte[] buffer, int offset, int count) readSize = (int)(maxPosition - currentPosition); } - var read = currentStream.Read(buffer, currentOffset, readSize); + var read = currentStream.NotNull().Read(buffer, currentOffset, readSize); if (read < 0) { throw new EndOfStreamException(); @@ -108,65 +106,7 @@ public override int Read(byte[] buffer, int offset, int count) "Sharpcompress currently does not support multi-volume decryption." ); } - var fileName = filePartEnumerator.Current.FileHeader.FileName; - if (!filePartEnumerator.MoveNext()) - { - throw new InvalidFormatException( - "Multi-part rar file is incomplete. Entry expects a new volume: " - + fileName - ); - } - InitializeNextFilePart(); - } - else - { - break; - } - } - return totalRead; - } - - public override async System.Threading.Tasks.Task ReadAsync( - byte[] buffer, - int offset, - int count, - System.Threading.CancellationToken cancellationToken - ) - { - var totalRead = 0; - var currentOffset = offset; - var currentCount = count; - while (currentCount > 0) - { - var readSize = currentCount; - if (currentCount > maxPosition - currentPosition) - { - readSize = (int)(maxPosition - currentPosition); - } - - var read = await currentStream - .ReadAsync(buffer, currentOffset, readSize, cancellationToken) - .ConfigureAwait(false); - if (read < 0) - { - throw new EndOfStreamException(); - } - currentPosition += read; - currentOffset += read; - currentCount -= read; - totalRead += read; - if ( - ((maxPosition - currentPosition) == 0) - && filePartEnumerator.Current.FileHeader.IsSplitAfter - ) - { - if (filePartEnumerator.Current.FileHeader.R4Salt != null) - { - throw new InvalidFormatException( - "Sharpcompress currently does not support multi-volume decryption." - ); - } var fileName = filePartEnumerator.Current.FileHeader.FileName; if (!filePartEnumerator.MoveNext()) { @@ -175,64 +115,7 @@ System.Threading.CancellationToken cancellationToken + fileName ); } - InitializeNextFilePart(); - } - else - { - break; - } - } - return totalRead; - } - -#if !LEGACY_DOTNET - public override async System.Threading.Tasks.ValueTask ReadAsync( - Memory buffer, - System.Threading.CancellationToken cancellationToken = default - ) - { - var totalRead = 0; - var currentOffset = 0; - var currentCount = buffer.Length; - while (currentCount > 0) - { - var readSize = currentCount; - if (currentCount > maxPosition - currentPosition) - { - readSize = (int)(maxPosition - currentPosition); - } - - var read = await currentStream - .ReadAsync(buffer.Slice(currentOffset, readSize), cancellationToken) - .ConfigureAwait(false); - if (read < 0) - { - throw new EndOfStreamException(); - } - currentPosition += read; - currentOffset += read; - currentCount -= read; - totalRead += read; - if ( - ((maxPosition - currentPosition) == 0) - && filePartEnumerator.Current.FileHeader.IsSplitAfter - ) - { - if (filePartEnumerator.Current.FileHeader.R4Salt != null) - { - throw new InvalidFormatException( - "Sharpcompress currently does not support multi-volume decryption." - ); - } - var fileName = filePartEnumerator.Current.FileHeader.FileName; - if (!filePartEnumerator.MoveNext()) - { - throw new InvalidFormatException( - "Multi-part rar file is incomplete. Entry expects a new volume: " - + fileName - ); - } InitializeNextFilePart(); } else @@ -240,9 +123,9 @@ public override async System.Threading.Tasks.ValueTask ReadAsync( break; } } + return totalRead; } -#endif public override bool CanRead => true; @@ -250,8 +133,6 @@ public override async System.Threading.Tasks.ValueTask ReadAsync( public override bool CanWrite => false; - public byte[] CurrentCrc { get; private set; } - public override void Flush() { } public override long Length => throw new NotSupportedException(); diff --git a/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStreamBase.cs b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStreamBase.cs new file mode 100644 index 000000000..d2dc9f38e --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/MultiVolumeReadOnlyStreamBase.cs @@ -0,0 +1,8 @@ +using System.IO; + +namespace SharpCompress.Compressors.Rar; + +internal abstract class MultiVolumeReadOnlyStreamBase : Stream +{ + public byte[]? CurrentCrc { get; protected set; } +} diff --git a/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.Async.cs b/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.Async.cs new file mode 100644 index 000000000..5c6570098 --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.Async.cs @@ -0,0 +1,79 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Rar; + +internal partial class RarBLAKE2spStream : RarStream, IStreamStack +{ + public static async ValueTask CreateAsync( + IRarUnpack unpack, + FileHeader fileHeader, + MultiVolumeReadOnlyAsyncStream readStream, + CancellationToken cancellationToken = default + ) + { + var stream = new RarBLAKE2spStream(unpack, fileHeader, readStream); + await stream.InitializeAsync(cancellationToken); + return stream; + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + var result = await base.ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + if (result != 0) + { + Update(_blake2sp, new ReadOnlySpan(buffer, offset, result), result); + } + else + { + _hash = Final(_blake2sp); + if (!disableCRCCheck && !(GetCrc().SequenceEqual(readStream.CurrentCrc)) && count != 0) + { + // NOTE: we use the last FileHeader in a multipart volume to check CRC + throw new InvalidFormatException("file crc mismatch"); + } + } + + return result; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var result = await base.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + if (result != 0) + { + Update(_blake2sp, buffer.Span.Slice(0, result), result); + } + else + { + _hash = Final(_blake2sp); + if ( + !disableCRCCheck + && !(GetCrc().SequenceEqual(readStream.CurrentCrc)) + && buffer.Length != 0 + ) + { + // NOTE: we use the last FileHeader in a multipart volume to check CRC + throw new InvalidFormatException("file crc mismatch"); + } + } + + return result; + } +#endif +} diff --git a/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.cs b/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.cs index 4ec3cf2cf..2fa0aa9a4 100644 --- a/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.cs +++ b/src/SharpCompress/Compressors/Rar/RarBLAKE2spStream.cs @@ -9,7 +9,7 @@ namespace SharpCompress.Compressors.Rar; -internal class RarBLAKE2spStream : RarStream, IStreamStack +internal partial class RarBLAKE2spStream : RarStream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -30,7 +30,7 @@ int IStreamStack.BufferPosition void IStreamStack.SetPosition(long position) { } - private readonly MultiVolumeReadOnlyStream readStream; + private readonly MultiVolumeReadOnlyStreamBase readStream; private readonly bool disableCRCCheck; const uint BLAKE2S_NUM_ROUNDS = 10; @@ -108,7 +108,7 @@ public BLAKE2SP() private RarBLAKE2spStream( IRarUnpack unpack, FileHeader fileHeader, - MultiVolumeReadOnlyStream readStream + MultiVolumeReadOnlyStreamBase readStream ) : base(unpack, fileHeader, readStream) { @@ -134,17 +134,7 @@ MultiVolumeReadOnlyStream readStream return stream; } - public static async Task CreateAsync( - IRarUnpack unpack, - FileHeader fileHeader, - MultiVolumeReadOnlyStream readStream, - CancellationToken cancellationToken = default - ) - { - var stream = new RarBLAKE2spStream(unpack, fileHeader, readStream); - await stream.InitializeAsync(cancellationToken); - return stream; - } + // Async methods moved to RarBLAKE2spStream.Async.cs protected override void Dispose(bool disposing) { @@ -358,59 +348,4 @@ public override int Read(byte[] buffer, int offset, int count) return result; } - - public override async System.Threading.Tasks.Task ReadAsync( - byte[] buffer, - int offset, - int count, - System.Threading.CancellationToken cancellationToken - ) - { - var result = await base.ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - if (result != 0) - { - Update(_blake2sp, new ReadOnlySpan(buffer, offset, result), result); - } - else - { - _hash = Final(_blake2sp); - if (!disableCRCCheck && !(GetCrc().SequenceEqual(readStream.CurrentCrc)) && count != 0) - { - // NOTE: we use the last FileHeader in a multipart volume to check CRC - throw new InvalidFormatException("file crc mismatch"); - } - } - - return result; - } - -#if !LEGACY_DOTNET - public override async System.Threading.Tasks.ValueTask ReadAsync( - Memory buffer, - System.Threading.CancellationToken cancellationToken = default - ) - { - var result = await base.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - if (result != 0) - { - Update(_blake2sp, buffer.Span.Slice(0, result), result); - } - else - { - _hash = Final(_blake2sp); - if ( - !disableCRCCheck - && !(GetCrc().SequenceEqual(readStream.CurrentCrc)) - && buffer.Length != 0 - ) - { - // NOTE: we use the last FileHeader in a multipart volume to check CRC - throw new InvalidFormatException("file crc mismatch"); - } - } - - return result; - } -#endif } diff --git a/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs b/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs new file mode 100644 index 000000000..040e01bc3 --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs @@ -0,0 +1,76 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Rar; + +internal partial class RarCrcStream : RarStream, IStreamStack +{ + public static async ValueTask CreateAsync( + IRarUnpack unpack, + FileHeader fileHeader, + MultiVolumeReadOnlyStreamBase readStream, + CancellationToken cancellationToken = default + ) + { + var stream = new RarCrcStream(unpack, fileHeader, readStream); + await stream.InitializeAsync(cancellationToken); + return stream; + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + var result = await base.ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + if (result != 0) + { + currentCrc = RarCRC.CheckCrc(currentCrc, buffer, offset, result); + } + else if ( + !disableCRC + && GetCrc() != BitConverter.ToUInt32(readStream.NotNull().CurrentCrc.NotNull(), 0) + && count != 0 + ) + { + // NOTE: we use the last FileHeader in a multipart volume to check CRC + throw new InvalidFormatException("file crc mismatch"); + } + + return result; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + var result = await base.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + if (result != 0) + { + currentCrc = RarCRC.CheckCrc(currentCrc, buffer.Span, 0, result); + } + else if ( + !disableCRC + && GetCrc() != BitConverter.ToUInt32(readStream.NotNull().CurrentCrc.NotNull(), 0) + && buffer.Length != 0 + ) + { + // NOTE: we use the last FileHeader in a multipart volume to check CRC + throw new InvalidFormatException("file crc mismatch"); + } + + return result; + } +#endif +} diff --git a/src/SharpCompress/Compressors/Rar/RarCrcStream.cs b/src/SharpCompress/Compressors/Rar/RarCrcStream.cs index af866c177..2e4030d44 100644 --- a/src/SharpCompress/Compressors/Rar/RarCrcStream.cs +++ b/src/SharpCompress/Compressors/Rar/RarCrcStream.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Compressors.Rar; -internal class RarCrcStream : RarStream, IStreamStack +internal partial class RarCrcStream : RarStream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -29,14 +29,14 @@ int IStreamStack.BufferPosition void IStreamStack.SetPosition(long position) { } - private readonly MultiVolumeReadOnlyStream readStream; + private readonly MultiVolumeReadOnlyStreamBase readStream; private uint currentCrc; private readonly bool disableCRC; private RarCrcStream( IRarUnpack unpack, FileHeader fileHeader, - MultiVolumeReadOnlyStream readStream + MultiVolumeReadOnlyStreamBase readStream ) : base(unpack, fileHeader, readStream) { @@ -59,17 +59,7 @@ MultiVolumeReadOnlyStream readStream return stream; } - public static async Task CreateAsync( - IRarUnpack unpack, - FileHeader fileHeader, - MultiVolumeReadOnlyStream readStream, - CancellationToken cancellationToken = default - ) - { - var stream = new RarCrcStream(unpack, fileHeader, readStream); - await stream.InitializeAsync(cancellationToken); - return stream; - } + // Async methods moved to RarCrcStream.Async.cs protected override void Dispose(bool disposing) { @@ -92,7 +82,7 @@ public override int Read(byte[] buffer, int offset, int count) } else if ( !disableCRC - && GetCrc() != BitConverter.ToUInt32(readStream.CurrentCrc, 0) + && GetCrc() != BitConverter.ToUInt32(readStream.NotNull().CurrentCrc.NotNull(), 0) && count != 0 ) { @@ -102,56 +92,4 @@ public override int Read(byte[] buffer, int offset, int count) return result; } - - public override async System.Threading.Tasks.Task ReadAsync( - byte[] buffer, - int offset, - int count, - System.Threading.CancellationToken cancellationToken - ) - { - var result = await base.ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - if (result != 0) - { - currentCrc = RarCRC.CheckCrc(currentCrc, buffer, offset, result); - } - else if ( - !disableCRC - && GetCrc() != BitConverter.ToUInt32(readStream.CurrentCrc, 0) - && count != 0 - ) - { - // NOTE: we use the last FileHeader in a multipart volume to check CRC - throw new InvalidFormatException("file crc mismatch"); - } - - return result; - } - -#if !LEGACY_DOTNET - public override async System.Threading.Tasks.ValueTask ReadAsync( - Memory buffer, - System.Threading.CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - var result = await base.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - if (result != 0) - { - currentCrc = RarCRC.CheckCrc(currentCrc, buffer.Span, 0, result); - } - else if ( - !disableCRC - && GetCrc() != BitConverter.ToUInt32(readStream.CurrentCrc, 0) - && buffer.Length != 0 - ) - { - // NOTE: we use the last FileHeader in a multipart volume to check CRC - throw new InvalidFormatException("file crc mismatch"); - } - - return result; - } -#endif } diff --git a/src/SharpCompress/Compressors/Rar/RarStream.Async.cs b/src/SharpCompress/Compressors/Rar/RarStream.Async.cs new file mode 100644 index 000000000..4ea0651dc --- /dev/null +++ b/src/SharpCompress/Compressors/Rar/RarStream.Async.cs @@ -0,0 +1,116 @@ +#nullable disable + +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common.Rar.Headers; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Rar; + +internal partial class RarStream +{ + /// + /// Asynchronously initializes the RAR stream for reading. + /// + public async ValueTask InitializeAsync(CancellationToken cancellationToken = default) + { + fetch = true; + await unpack.DoUnpackAsync(fileHeader, readStream, this, cancellationToken); + fetch = false; + _position = 0; + } + + /// + /// Asynchronously reads bytes from the current stream into a buffer. + /// + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) => await ReadImplAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); + + /// + /// Internal async implementation of ReadAsync. + /// + private async Task ReadImplAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + outTotal = 0; + if (tmpCount > 0) + { + var toCopy = tmpCount < count ? tmpCount : count; + Buffer.BlockCopy(tmpBuffer, tmpOffset, buffer, offset, toCopy); + tmpOffset += toCopy; + tmpCount -= toCopy; + offset += toCopy; + count -= toCopy; + outTotal += toCopy; + } + if (count > 0 && unpack.DestSize > 0) + { + outBuffer = buffer; + outOffset = offset; + outCount = count; + fetch = true; + await unpack.DoUnpackAsync(cancellationToken).ConfigureAwait(false); + fetch = false; + } + _position += outTotal; + if (count > 0 && outTotal == 0 && _position < Length) + { + // sanity check, eg if we try to decompress a redir entry + throw new InvalidOperationException( + $"unpacked file size does not match header: expected {Length} found {_position}" + ); + } + return outTotal; + } + +#if !LEGACY_DOTNET + /// + /// Asynchronously reads bytes from the current stream into a memory buffer. + /// + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + var array = ArrayPool.Shared.Rent(buffer.Length); + try + { + var bytesRead = await ReadImplAsync(array, 0, buffer.Length, cancellationToken) + .ConfigureAwait(false); + new ReadOnlySpan(array, 0, bytesRead).CopyTo(buffer.Span); + return bytesRead; + } + finally + { + ArrayPool.Shared.Return(array); + } + } +#endif + + /// + /// Asynchronously writes bytes to the current stream. + /// + public override Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + cancellationToken.ThrowIfCancellationRequested(); + Write(buffer, offset, count); + return Task.CompletedTask; + } +} diff --git a/src/SharpCompress/Compressors/Rar/RarStream.cs b/src/SharpCompress/Compressors/Rar/RarStream.cs index 34700edf4..30fcc5ea9 100644 --- a/src/SharpCompress/Compressors/Rar/RarStream.cs +++ b/src/SharpCompress/Compressors/Rar/RarStream.cs @@ -3,14 +3,12 @@ using System; using System.Buffers; using System.IO; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common.Rar.Headers; using SharpCompress.IO; namespace SharpCompress.Compressors.Rar; -internal class RarStream : Stream, IStreamStack +internal partial class RarStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -68,14 +66,6 @@ public void Initialize() _position = 0; } - public async ValueTask InitializeAsync(CancellationToken cancellationToken = default) - { - fetch = true; - await unpack.DoUnpackAsync(fileHeader, readStream, this, cancellationToken); - fetch = false; - _position = 0; - } - protected override void Dispose(bool disposing) { if (!isDisposed) @@ -144,73 +134,6 @@ public override int Read(byte[] buffer, int offset, int count) return outTotal; } - public override async System.Threading.Tasks.Task ReadAsync( - byte[] buffer, - int offset, - int count, - System.Threading.CancellationToken cancellationToken - ) => await ReadImplAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); - - private async System.Threading.Tasks.Task ReadImplAsync( - byte[] buffer, - int offset, - int count, - System.Threading.CancellationToken cancellationToken - ) - { - outTotal = 0; - if (tmpCount > 0) - { - var toCopy = tmpCount < count ? tmpCount : count; - Buffer.BlockCopy(tmpBuffer, tmpOffset, buffer, offset, toCopy); - tmpOffset += toCopy; - tmpCount -= toCopy; - offset += toCopy; - count -= toCopy; - outTotal += toCopy; - } - if (count > 0 && unpack.DestSize > 0) - { - outBuffer = buffer; - outOffset = offset; - outCount = count; - fetch = true; - await unpack.DoUnpackAsync(cancellationToken).ConfigureAwait(false); - fetch = false; - } - _position += outTotal; - if (count > 0 && outTotal == 0 && _position < Length) - { - // sanity check, eg if we try to decompress a redir entry - throw new InvalidOperationException( - $"unpacked file size does not match header: expected {Length} found {_position}" - ); - } - return outTotal; - } - -#if !LEGACY_DOTNET - public override async System.Threading.Tasks.ValueTask ReadAsync( - Memory buffer, - System.Threading.CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - var array = System.Buffers.ArrayPool.Shared.Rent(buffer.Length); - try - { - var bytesRead = await ReadImplAsync(array, 0, buffer.Length, cancellationToken) - .ConfigureAwait(false); - new ReadOnlySpan(array, 0, bytesRead).CopyTo(buffer.Span); - return bytesRead; - } - finally - { - System.Buffers.ArrayPool.Shared.Return(array); - } - } -#endif - public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); public override void SetLength(long value) => throw new NotSupportedException(); @@ -245,18 +168,6 @@ public override void Write(byte[] buffer, int offset, int count) } } - public override System.Threading.Tasks.Task WriteAsync( - byte[] buffer, - int offset, - int count, - System.Threading.CancellationToken cancellationToken - ) - { - cancellationToken.ThrowIfCancellationRequested(); - Write(buffer, offset, count); - return System.Threading.Tasks.Task.CompletedTask; - } - private void EnsureBufferCapacity(int count) { if (this.tmpBuffer.Length < this.tmpCount + count) diff --git a/src/SharpCompress/Compressors/Reduce/ReduceStream.cs b/src/SharpCompress/Compressors/Reduce/ReduceStream.cs index 8ea0cd3d2..ea8e70d24 100644 --- a/src/SharpCompress/Compressors/Reduce/ReduceStream.cs +++ b/src/SharpCompress/Compressors/Reduce/ReduceStream.cs @@ -140,7 +140,10 @@ public override long Position private int NEXTBYTE() { if (inByteCount == compressedSize) + { return EOF; + } + inByteCount++; return inStream.ReadByte(); } @@ -229,7 +232,9 @@ public override int Read(byte[] buffer, int offset, int count) windowsBuffer[windowIndex++] = nextByte; outBytesCount++; if (windowIndex == WSIZE) + { windowIndex = 0; + } continue; } @@ -241,7 +246,9 @@ public override int Read(byte[] buffer, int offset, int count) windowsBuffer[windowIndex++] = RunLengthCode; outBytesCount++; if (windowIndex == WSIZE) + { windowIndex = 0; + } continue; } @@ -268,10 +275,14 @@ public override int Read(byte[] buffer, int offset, int count) outBytesCount++; if (distance == WSIZE) + { distance = 0; + } if (windowIndex == WSIZE) + { windowIndex = 0; + } length--; } diff --git a/src/SharpCompress/Compressors/Squeezed/BitReader.cs b/src/SharpCompress/Compressors/Squeezed/BitReader.cs index 123acfb56..04d7b7e67 100644 --- a/src/SharpCompress/Compressors/Squeezed/BitReader.cs +++ b/src/SharpCompress/Compressors/Squeezed/BitReader.cs @@ -20,7 +20,10 @@ public bool ReadBit() { int nextByte = _stream.ReadByte(); if (nextByte == -1) + { throw new EndOfStreamException(); + } + _bitBuffer = nextByte; _bitCount = 8; } diff --git a/src/SharpCompress/Compressors/Xz/BinaryUtils.Async.cs b/src/SharpCompress/Compressors/Xz/BinaryUtils.Async.cs new file mode 100644 index 000000000..25e1182d6 --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/BinaryUtils.Async.cs @@ -0,0 +1,32 @@ +using System; +using System.Buffers.Binary; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.Xz; + +public static partial class BinaryUtils +{ + public static async ValueTask ReadLittleEndianInt32Async( + this Stream stream, + CancellationToken cancellationToken = default + ) + { + var bytes = new byte[4]; + var read = await stream.ReadFullyAsync(bytes, cancellationToken).ConfigureAwait(false); + if (!read) + { + throw new EndOfStreamException(); + } + return BinaryPrimitives.ReadInt32LittleEndian(bytes); + } + + internal static async ValueTask ReadLittleEndianUInt32Async( + this Stream stream, + CancellationToken cancellationToken = default + ) => + unchecked( + (uint)await ReadLittleEndianInt32Async(stream, cancellationToken).ConfigureAwait(false) + ); +} diff --git a/src/SharpCompress/Compressors/Xz/BinaryUtils.cs b/src/SharpCompress/Compressors/Xz/BinaryUtils.cs index 12cb29586..f9f7af31d 100644 --- a/src/SharpCompress/Compressors/Xz/BinaryUtils.cs +++ b/src/SharpCompress/Compressors/Xz/BinaryUtils.cs @@ -7,7 +7,7 @@ namespace SharpCompress.Compressors.Xz; [CLSCompliant(false)] -public static class BinaryUtils +public static partial class BinaryUtils { public static int ReadLittleEndianInt32(this BinaryReader reader) { @@ -32,28 +32,6 @@ public static int ReadLittleEndianInt32(this Stream stream) internal static uint ReadLittleEndianUInt32(this Stream stream) => unchecked((uint)ReadLittleEndianInt32(stream)); - public static async Task ReadLittleEndianInt32Async( - this Stream stream, - CancellationToken cancellationToken = default - ) - { - var bytes = new byte[4]; - var read = await stream.ReadFullyAsync(bytes, cancellationToken).ConfigureAwait(false); - if (!read) - { - throw new EndOfStreamException(); - } - return BinaryPrimitives.ReadInt32LittleEndian(bytes); - } - - internal static async Task ReadLittleEndianUInt32Async( - this Stream stream, - CancellationToken cancellationToken = default - ) => - unchecked( - (uint)await ReadLittleEndianInt32Async(stream, cancellationToken).ConfigureAwait(false) - ); - internal static byte[] ToBigEndianBytes(this uint uint32) { var result = BitConverter.GetBytes(uint32); diff --git a/src/SharpCompress/Compressors/Xz/Filters/Lzma2Filter.cs b/src/SharpCompress/Compressors/Xz/Filters/Lzma2Filter.cs index ea078c9d5..c4169ebbe 100644 --- a/src/SharpCompress/Compressors/Xz/Filters/Lzma2Filter.cs +++ b/src/SharpCompress/Compressors/Xz/Filters/Lzma2Filter.cs @@ -50,7 +50,7 @@ public override void Init(byte[] properties) public override void ValidateFilter() { } public override void SetBaseStream(Stream stream) => - BaseStream = new LzmaStream(new[] { _dictionarySize }, stream); + BaseStream = LzmaStream.Create(new[] { _dictionarySize }, stream); public override int Read(byte[] buffer, int offset, int count) => BaseStream.Read(buffer, offset, count); diff --git a/src/SharpCompress/Compressors/Xz/MultiByteIntegers.Async.cs b/src/SharpCompress/Compressors/Xz/MultiByteIntegers.Async.cs new file mode 100644 index 000000000..05b95ac4a --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/MultiByteIntegers.Async.cs @@ -0,0 +1,48 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; + +namespace SharpCompress.Compressors.Xz; + +internal static partial class MultiByteIntegers +{ + public static async ValueTask ReadXZIntegerAsync( + this BinaryReader reader, + CancellationToken cancellationToken = default, + int MaxBytes = 9 + ) + { + if (MaxBytes <= 0) + { + throw new ArgumentOutOfRangeException(nameof(MaxBytes)); + } + + if (MaxBytes > 9) + { + MaxBytes = 9; + } + + var LastByte = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + var Output = (ulong)LastByte & 0x7F; + + var i = 0; + while ((LastByte & 0x80) != 0) + { + if (++i >= MaxBytes) + { + throw new InvalidFormatException(); + } + + LastByte = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + if (LastByte == 0) + { + throw new InvalidFormatException(); + } + + Output |= ((ulong)(LastByte & 0x7F)) << (i * 7); + } + return Output; + } +} diff --git a/src/SharpCompress/Compressors/Xz/MultiByteIntegers.cs b/src/SharpCompress/Compressors/Xz/MultiByteIntegers.cs index 6f7a863ba..52dbd5b8d 100644 --- a/src/SharpCompress/Compressors/Xz/MultiByteIntegers.cs +++ b/src/SharpCompress/Compressors/Xz/MultiByteIntegers.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Compressors.Xz; -internal static class MultiByteIntegers +internal static partial class MultiByteIntegers { public static ulong ReadXZInteger(this BinaryReader reader, int MaxBytes = 9) { @@ -41,42 +41,4 @@ public static ulong ReadXZInteger(this BinaryReader reader, int MaxBytes = 9) } return Output; } - - public static async Task ReadXZIntegerAsync( - this BinaryReader reader, - CancellationToken cancellationToken = default, - int MaxBytes = 9 - ) - { - if (MaxBytes <= 0) - { - throw new ArgumentOutOfRangeException(nameof(MaxBytes)); - } - - if (MaxBytes > 9) - { - MaxBytes = 9; - } - - var LastByte = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); - var Output = (ulong)LastByte & 0x7F; - - var i = 0; - while ((LastByte & 0x80) != 0) - { - if (++i >= MaxBytes) - { - throw new InvalidFormatException(); - } - - LastByte = await reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); - if (LastByte == 0) - { - throw new InvalidFormatException(); - } - - Output |= ((ulong)(LastByte & 0x7F)) << (i * 7); - } - return Output; - } } diff --git a/src/SharpCompress/Compressors/Xz/XZBlock.Async.cs b/src/SharpCompress/Compressors/Xz/XZBlock.Async.cs new file mode 100644 index 000000000..78d2de3d8 --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/XZBlock.Async.cs @@ -0,0 +1,134 @@ +#nullable disable + +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Compressors.Xz.Filters; + +namespace SharpCompress.Compressors.Xz; + +public sealed partial class XZBlock +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + var bytesRead = 0; + if (!HeaderIsLoaded) + { + await LoadHeaderAsync(cancellationToken).ConfigureAwait(false); + } + + if (!_streamConnected) + { + ConnectStream(); + } + + if (!_endOfStream) + { + bytesRead = await _decomStream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + } + + if (bytesRead != count) + { + _endOfStream = true; + } + + if (_endOfStream && !_paddingSkipped) + { + await SkipPaddingAsync(cancellationToken).ConfigureAwait(false); + } + + if (_endOfStream && !_crcChecked) + { + await CheckCrcAsync(cancellationToken).ConfigureAwait(false); + } + + return bytesRead; + } + + private async ValueTask SkipPaddingAsync(CancellationToken cancellationToken = default) + { + var bytes = (BaseStream.Position - _startPosition) % 4; + if (bytes > 0) + { + var paddingBytes = new byte[4 - bytes]; + await BaseStream + .ReadAsync(paddingBytes, 0, paddingBytes.Length, cancellationToken) + .ConfigureAwait(false); + if (paddingBytes.Any(b => b != 0)) + { + throw new InvalidFormatException("Padding bytes were non-null"); + } + } + _paddingSkipped = true; + } + + private async ValueTask CheckCrcAsync(CancellationToken cancellationToken = default) + { + var crc = new byte[_checkSize]; + await BaseStream.ReadAsync(crc, 0, _checkSize, cancellationToken).ConfigureAwait(false); + // Actually do a check (and read in the bytes + // into the function throughout the stream read). + _crcChecked = true; + } + + private async ValueTask LoadHeaderAsync(CancellationToken cancellationToken = default) + { + await ReadHeaderSizeAsync(cancellationToken).ConfigureAwait(false); + var headerCache = await CacheHeaderAsync(cancellationToken).ConfigureAwait(false); + + using (var cache = new MemoryStream(headerCache)) + using (var cachedReader = new BinaryReader(cache)) + { + cachedReader.BaseStream.Position = 1; // skip the header size byte + ReadBlockFlags(cachedReader); + ReadFilters(cachedReader); + } + HeaderIsLoaded = true; + } + + private async ValueTask ReadHeaderSizeAsync(CancellationToken cancellationToken = default) + { + var buffer = new byte[1]; + await BaseStream.ReadAsync(buffer, 0, 1, cancellationToken).ConfigureAwait(false); + _blockHeaderSizeByte = buffer[0]; + if (_blockHeaderSizeByte == 0) + { + throw new XZIndexMarkerReachedException(); + } + } + + private async ValueTask CacheHeaderAsync(CancellationToken cancellationToken = default) + { + var blockHeaderWithoutCrc = new byte[BlockHeaderSize - 4]; + blockHeaderWithoutCrc[0] = _blockHeaderSizeByte; + var read = await BaseStream + .ReadAsync(blockHeaderWithoutCrc, 1, BlockHeaderSize - 5, cancellationToken) + .ConfigureAwait(false); + if (read != BlockHeaderSize - 5) + { + throw new EndOfStreamException("Reached end of stream unexpectedly"); + } + + var crc = await BaseStream + .ReadLittleEndianUInt32Async(cancellationToken) + .ConfigureAwait(false); + var calcCrc = Crc32.Compute(blockHeaderWithoutCrc); + if (crc != calcCrc) + { + throw new InvalidFormatException("Block header corrupt"); + } + + return blockHeaderWithoutCrc; + } +} diff --git a/src/SharpCompress/Compressors/Xz/XZBlock.cs b/src/SharpCompress/Compressors/Xz/XZBlock.cs index 7c18e3b41..39c3f0b5c 100644 --- a/src/SharpCompress/Compressors/Xz/XZBlock.cs +++ b/src/SharpCompress/Compressors/Xz/XZBlock.cs @@ -12,7 +12,7 @@ namespace SharpCompress.Compressors.Xz; [CLSCompliant(false)] -public sealed class XZBlock : XZReadOnlyStream +public sealed partial class XZBlock : XZReadOnlyStream { public int BlockHeaderSize => (_blockHeaderSizeByte + 1) * 4; public ulong? CompressedSize { get; private set; } @@ -74,49 +74,6 @@ public override int Read(byte[] buffer, int offset, int count) return bytesRead; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - var bytesRead = 0; - if (!HeaderIsLoaded) - { - await LoadHeaderAsync(cancellationToken).ConfigureAwait(false); - } - - if (!_streamConnected) - { - ConnectStream(); - } - - if (!_endOfStream) - { - bytesRead = await _decomStream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - } - - if (bytesRead != count) - { - _endOfStream = true; - } - - if (_endOfStream && !_paddingSkipped) - { - await SkipPaddingAsync(cancellationToken).ConfigureAwait(false); - } - - if (_endOfStream && !_crcChecked) - { - await CheckCrcAsync(cancellationToken).ConfigureAwait(false); - } - - return bytesRead; - } - private void SkipPadding() { var bytes = (BaseStream.Position - _startPosition) % 4; @@ -132,23 +89,6 @@ private void SkipPadding() _paddingSkipped = true; } - private async ValueTask SkipPaddingAsync(CancellationToken cancellationToken = default) - { - var bytes = (BaseStream.Position - _startPosition) % 4; - if (bytes > 0) - { - var paddingBytes = new byte[4 - bytes]; - await BaseStream - .ReadAsync(paddingBytes, 0, paddingBytes.Length, cancellationToken) - .ConfigureAwait(false); - if (paddingBytes.Any(b => b != 0)) - { - throw new InvalidFormatException("Padding bytes were non-null"); - } - } - _paddingSkipped = true; - } - private void CheckCrc() { var crc = new byte[_checkSize]; @@ -158,15 +98,6 @@ private void CheckCrc() _crcChecked = true; } - private async ValueTask CheckCrcAsync(CancellationToken cancellationToken = default) - { - var crc = new byte[_checkSize]; - await BaseStream.ReadAsync(crc, 0, _checkSize, cancellationToken).ConfigureAwait(false); - // Actually do a check (and read in the bytes - // into the function throughout the stream read). - _crcChecked = true; - } - private void ConnectStream() { _decomStream = BaseStream; @@ -194,21 +125,6 @@ private void LoadHeader() HeaderIsLoaded = true; } - private async ValueTask LoadHeaderAsync(CancellationToken cancellationToken = default) - { - await ReadHeaderSizeAsync(cancellationToken).ConfigureAwait(false); - var headerCache = await CacheHeaderAsync(cancellationToken).ConfigureAwait(false); - - using (var cache = new MemoryStream(headerCache)) - using (var cachedReader = new BinaryReader(cache)) - { - cachedReader.BaseStream.Position = 1; // skip the header size byte - ReadBlockFlags(cachedReader); - ReadFilters(cachedReader); - } - HeaderIsLoaded = true; - } - private void ReadHeaderSize() { _blockHeaderSizeByte = (byte)BaseStream.ReadByte(); @@ -218,17 +134,6 @@ private void ReadHeaderSize() } } - private async ValueTask ReadHeaderSizeAsync(CancellationToken cancellationToken = default) - { - var buffer = new byte[1]; - await BaseStream.ReadAsync(buffer, 0, 1, cancellationToken).ConfigureAwait(false); - _blockHeaderSizeByte = buffer[0]; - if (_blockHeaderSizeByte == 0) - { - throw new XZIndexMarkerReachedException(); - } - } - private byte[] CacheHeader() { var blockHeaderWithoutCrc = new byte[BlockHeaderSize - 4]; @@ -249,30 +154,6 @@ private byte[] CacheHeader() return blockHeaderWithoutCrc; } - private async ValueTask CacheHeaderAsync(CancellationToken cancellationToken = default) - { - var blockHeaderWithoutCrc = new byte[BlockHeaderSize - 4]; - blockHeaderWithoutCrc[0] = _blockHeaderSizeByte; - var read = await BaseStream - .ReadAsync(blockHeaderWithoutCrc, 1, BlockHeaderSize - 5, cancellationToken) - .ConfigureAwait(false); - if (read != BlockHeaderSize - 5) - { - throw new EndOfStreamException("Reached end of stream unexpectedly"); - } - - var crc = await BaseStream - .ReadLittleEndianUInt32Async(cancellationToken) - .ConfigureAwait(false); - var calcCrc = Crc32.Compute(blockHeaderWithoutCrc); - if (crc != calcCrc) - { - throw new InvalidFormatException("Block header corrupt"); - } - - return blockHeaderWithoutCrc; - } - private void ReadBlockFlags(BinaryReader reader) { var blockFlags = reader.ReadByte(); diff --git a/src/SharpCompress/Compressors/Xz/XZFooter.Async.cs b/src/SharpCompress/Compressors/Xz/XZFooter.Async.cs new file mode 100644 index 000000000..b136335d4 --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/XZFooter.Async.cs @@ -0,0 +1,47 @@ +using System; +using System.IO; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Xz; + +public partial class XZFooter +{ + public static async ValueTask FromStreamAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var footer = new XZFooter(new BinaryReader(stream, Encoding.UTF8, true)); + await footer.ProcessAsync(cancellationToken).ConfigureAwait(false); + return footer; + } + + public async ValueTask ProcessAsync(CancellationToken cancellationToken = default) + { + var crc = await _reader + .BaseStream.ReadLittleEndianUInt32Async(cancellationToken) + .ConfigureAwait(false); + var footerBytes = await _reader.ReadBytesAsync(6, cancellationToken).ConfigureAwait(false); + var myCrc = Crc32.Compute(footerBytes); + if (crc != myCrc) + { + throw new InvalidFormatException("Footer corrupt"); + } + + using (var stream = new MemoryStream(footerBytes)) + using (var reader = new BinaryReader(stream)) + { + BackwardSize = (reader.ReadLittleEndianUInt32() + 1) * 4; + StreamFlags = reader.ReadBytes(2); + } + var magBy = await _reader.ReadBytesAsync(2, cancellationToken).ConfigureAwait(false); + if (!magBy.AsSpan().SequenceEqual(_magicBytes)) + { + throw new InvalidFormatException("Magic footer missing"); + } + } +} diff --git a/src/SharpCompress/Compressors/Xz/XZFooter.cs b/src/SharpCompress/Compressors/Xz/XZFooter.cs index 67b68be7c..d6b80d5e9 100644 --- a/src/SharpCompress/Compressors/Xz/XZFooter.cs +++ b/src/SharpCompress/Compressors/Xz/XZFooter.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Compressors.Xz; -public class XZFooter +public partial class XZFooter { private readonly BinaryReader _reader; private static ReadOnlySpan _magicBytes => "YZ"u8; @@ -29,16 +29,6 @@ public static XZFooter FromStream(Stream stream) return footer; } - public static async Task FromStreamAsync( - Stream stream, - CancellationToken cancellationToken = default - ) - { - var footer = new XZFooter(new BinaryReader(stream, Encoding.UTF8, true)); - await footer.ProcessAsync(cancellationToken).ConfigureAwait(false); - return footer; - } - public void Process() { var crc = _reader.ReadLittleEndianUInt32(); @@ -61,29 +51,4 @@ public void Process() throw new InvalidFormatException("Magic footer missing"); } } - - public async ValueTask ProcessAsync(CancellationToken cancellationToken = default) - { - var crc = await _reader - .BaseStream.ReadLittleEndianUInt32Async(cancellationToken) - .ConfigureAwait(false); - var footerBytes = await _reader.ReadBytesAsync(6, cancellationToken).ConfigureAwait(false); - var myCrc = Crc32.Compute(footerBytes); - if (crc != myCrc) - { - throw new InvalidFormatException("Footer corrupt"); - } - - using (var stream = new MemoryStream(footerBytes)) - using (var reader = new BinaryReader(stream)) - { - BackwardSize = (reader.ReadLittleEndianUInt32() + 1) * 4; - StreamFlags = reader.ReadBytes(2); - } - var magBy = await _reader.ReadBytesAsync(2, cancellationToken).ConfigureAwait(false); - if (!magBy.AsSpan().SequenceEqual(_magicBytes)) - { - throw new InvalidFormatException("Magic footer missing"); - } - } } diff --git a/src/SharpCompress/Compressors/Xz/XZHeader.Async.cs b/src/SharpCompress/Compressors/Xz/XZHeader.Async.cs new file mode 100644 index 000000000..aafe103b0 --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/XZHeader.Async.cs @@ -0,0 +1,48 @@ +using System.IO; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Xz; + +public partial class XZHeader +{ + public static async ValueTask FromStreamAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + var header = new XZHeader(new BinaryReader(stream, Encoding.UTF8, true)); + await header.ProcessAsync(cancellationToken).ConfigureAwait(false); + return header; + } + + public async ValueTask ProcessAsync(CancellationToken cancellationToken = default) + { + CheckMagicBytes(await _reader.ReadBytesAsync(6, cancellationToken).ConfigureAwait(false)); + await ProcessStreamFlagsAsync(cancellationToken).ConfigureAwait(false); + } + + private async ValueTask ProcessStreamFlagsAsync(CancellationToken cancellationToken = default) + { + var streamFlags = await _reader.ReadBytesAsync(2, cancellationToken).ConfigureAwait(false); + var crc = await _reader + .BaseStream.ReadLittleEndianUInt32Async(cancellationToken) + .ConfigureAwait(false); + var calcCrc = Crc32.Compute(streamFlags); + if (crc != calcCrc) + { + throw new InvalidFormatException("Stream header corrupt"); + } + + BlockCheckType = (CheckType)(streamFlags[1] & 0x0F); + var futureUse = (byte)(streamFlags[1] & 0xF0); + if (futureUse != 0 || streamFlags[0] != 0) + { + throw new InvalidFormatException("Unknown XZ Stream Version"); + } + } +} diff --git a/src/SharpCompress/Compressors/Xz/XZHeader.cs b/src/SharpCompress/Compressors/Xz/XZHeader.cs index 39f706b1d..0dda15836 100644 --- a/src/SharpCompress/Compressors/Xz/XZHeader.cs +++ b/src/SharpCompress/Compressors/Xz/XZHeader.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Compressors.Xz; -public class XZHeader +public partial class XZHeader { private readonly BinaryReader _reader; private readonly byte[] MagicHeader = { 0xFD, 0x37, 0x7A, 0x58, 0x5a, 0x00 }; @@ -25,28 +25,12 @@ public static XZHeader FromStream(Stream stream) return header; } - public static async Task FromStreamAsync( - Stream stream, - CancellationToken cancellationToken = default - ) - { - var header = new XZHeader(new BinaryReader(stream, Encoding.UTF8, true)); - await header.ProcessAsync(cancellationToken).ConfigureAwait(false); - return header; - } - public void Process() { CheckMagicBytes(_reader.ReadBytes(6)); ProcessStreamFlags(); } - public async ValueTask ProcessAsync(CancellationToken cancellationToken = default) - { - CheckMagicBytes(await _reader.ReadBytesAsync(6, cancellationToken).ConfigureAwait(false)); - await ProcessStreamFlagsAsync(cancellationToken).ConfigureAwait(false); - } - private void ProcessStreamFlags() { var streamFlags = _reader.ReadBytes(2); @@ -65,26 +49,6 @@ private void ProcessStreamFlags() } } - private async ValueTask ProcessStreamFlagsAsync(CancellationToken cancellationToken = default) - { - var streamFlags = await _reader.ReadBytesAsync(2, cancellationToken).ConfigureAwait(false); - var crc = await _reader - .BaseStream.ReadLittleEndianUInt32Async(cancellationToken) - .ConfigureAwait(false); - var calcCrc = Crc32.Compute(streamFlags); - if (crc != calcCrc) - { - throw new InvalidFormatException("Stream header corrupt"); - } - - BlockCheckType = (CheckType)(streamFlags[1] & 0x0F); - var futureUse = (byte)(streamFlags[1] & 0xF0); - if (futureUse != 0 || streamFlags[0] != 0) - { - throw new InvalidFormatException("Unknown XZ Stream Version"); - } - } - private void CheckMagicBytes(byte[] header) { if (!header.SequenceEqual(MagicHeader)) diff --git a/src/SharpCompress/Compressors/Xz/XZIndex.Async.cs b/src/SharpCompress/Compressors/Xz/XZIndex.Async.cs new file mode 100644 index 000000000..b2feaabee --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/XZIndex.Async.cs @@ -0,0 +1,80 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Xz; + +public partial class XZIndex +{ + public static async ValueTask FromStreamAsync( + Stream stream, + bool indexMarkerAlreadyVerified, + CancellationToken cancellationToken = default + ) + { + var index = new XZIndex( + new BinaryReader(stream, Encoding.UTF8, true), + indexMarkerAlreadyVerified + ); + await index.ProcessAsync(cancellationToken).ConfigureAwait(false); + return index; + } + + public async ValueTask ProcessAsync(CancellationToken cancellationToken = default) + { + if (!_indexMarkerAlreadyVerified) + { + await VerifyIndexMarkerAsync(cancellationToken).ConfigureAwait(false); + } + + NumberOfRecords = await _reader.ReadXZIntegerAsync(cancellationToken).ConfigureAwait(false); + for (ulong i = 0; i < NumberOfRecords; i++) + { + Records.Add( + await XZIndexRecord + .FromBinaryReaderAsync(_reader, cancellationToken) + .ConfigureAwait(false) + ); + } + await SkipPaddingAsync(cancellationToken).ConfigureAwait(false); + await VerifyCrc32Async(cancellationToken).ConfigureAwait(false); + } + + private async ValueTask VerifyIndexMarkerAsync(CancellationToken cancellationToken = default) + { + var marker = await _reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); + if (marker != 0) + { + throw new InvalidFormatException("Not an index block"); + } + } + + private async ValueTask SkipPaddingAsync(CancellationToken cancellationToken = default) + { + var bytes = (int)(_reader.BaseStream.Position - StreamStartPosition) % 4; + if (bytes > 0) + { + var paddingBytes = await _reader + .ReadBytesAsync(4 - bytes, cancellationToken) + .ConfigureAwait(false); + if (paddingBytes.Any(b => b != 0)) + { + throw new InvalidFormatException("Padding bytes were non-null"); + } + } + } + + private async ValueTask VerifyCrc32Async(CancellationToken cancellationToken = default) + { + var crc = await _reader + .BaseStream.ReadLittleEndianUInt32Async(cancellationToken) + .ConfigureAwait(false); + // TODO verify this matches + } +} diff --git a/src/SharpCompress/Compressors/Xz/XZIndex.cs b/src/SharpCompress/Compressors/Xz/XZIndex.cs index 3bc8ea422..3ca6b06e3 100644 --- a/src/SharpCompress/Compressors/Xz/XZIndex.cs +++ b/src/SharpCompress/Compressors/Xz/XZIndex.cs @@ -11,7 +11,7 @@ namespace SharpCompress.Compressors.Xz; [CLSCompliant(false)] -public class XZIndex +public partial class XZIndex { private readonly BinaryReader _reader; public long StreamStartPosition { get; private set; } @@ -41,20 +41,6 @@ public static XZIndex FromStream(Stream stream, bool indexMarkerAlreadyVerified) return index; } - public static async ValueTask FromStreamAsync( - Stream stream, - bool indexMarkerAlreadyVerified, - CancellationToken cancellationToken = default - ) - { - var index = new XZIndex( - new BinaryReader(stream, Encoding.UTF8, true), - indexMarkerAlreadyVerified - ); - await index.ProcessAsync(cancellationToken).ConfigureAwait(false); - return index; - } - public void Process() { if (!_indexMarkerAlreadyVerified) @@ -71,26 +57,6 @@ public void Process() VerifyCrc32(); } - public async ValueTask ProcessAsync(CancellationToken cancellationToken = default) - { - if (!_indexMarkerAlreadyVerified) - { - await VerifyIndexMarkerAsync(cancellationToken).ConfigureAwait(false); - } - - NumberOfRecords = await _reader.ReadXZIntegerAsync(cancellationToken).ConfigureAwait(false); - for (ulong i = 0; i < NumberOfRecords; i++) - { - Records.Add( - await XZIndexRecord - .FromBinaryReaderAsync(_reader, cancellationToken) - .ConfigureAwait(false) - ); - } - await SkipPaddingAsync(cancellationToken).ConfigureAwait(false); - await VerifyCrc32Async(cancellationToken).ConfigureAwait(false); - } - private void VerifyIndexMarker() { var marker = _reader.ReadByte(); @@ -100,15 +66,6 @@ private void VerifyIndexMarker() } } - private async ValueTask VerifyIndexMarkerAsync(CancellationToken cancellationToken = default) - { - var marker = await _reader.ReadByteAsync(cancellationToken).ConfigureAwait(false); - if (marker != 0) - { - throw new InvalidFormatException("Not an index block"); - } - } - private void SkipPadding() { var bytes = (int)(_reader.BaseStream.Position - StreamStartPosition) % 4; @@ -122,32 +79,9 @@ private void SkipPadding() } } - private async ValueTask SkipPaddingAsync(CancellationToken cancellationToken = default) - { - var bytes = (int)(_reader.BaseStream.Position - StreamStartPosition) % 4; - if (bytes > 0) - { - var paddingBytes = await _reader - .ReadBytesAsync(4 - bytes, cancellationToken) - .ConfigureAwait(false); - if (paddingBytes.Any(b => b != 0)) - { - throw new InvalidFormatException("Padding bytes were non-null"); - } - } - } - private void VerifyCrc32() { var crc = _reader.ReadLittleEndianUInt32(); // TODO verify this matches } - - private async ValueTask VerifyCrc32Async(CancellationToken cancellationToken = default) - { - var crc = await _reader - .BaseStream.ReadLittleEndianUInt32Async(cancellationToken) - .ConfigureAwait(false); - // TODO verify this matches - } } diff --git a/src/SharpCompress/Compressors/Xz/XZIndexRecord.Async.cs b/src/SharpCompress/Compressors/Xz/XZIndexRecord.Async.cs new file mode 100644 index 000000000..9d6d6f6c9 --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/XZIndexRecord.Async.cs @@ -0,0 +1,21 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.Compressors.Xz; + +public partial class XZIndexRecord +{ + public static async ValueTask FromBinaryReaderAsync( + BinaryReader br, + CancellationToken cancellationToken = default + ) + { + var record = new XZIndexRecord(); + record.UnpaddedSize = await br.ReadXZIntegerAsync(cancellationToken).ConfigureAwait(false); + record.UncompressedSize = await br.ReadXZIntegerAsync(cancellationToken) + .ConfigureAwait(false); + return record; + } +} diff --git a/src/SharpCompress/Compressors/Xz/XZIndexRecord.cs b/src/SharpCompress/Compressors/Xz/XZIndexRecord.cs index 14e76eb86..d447c7b3d 100644 --- a/src/SharpCompress/Compressors/Xz/XZIndexRecord.cs +++ b/src/SharpCompress/Compressors/Xz/XZIndexRecord.cs @@ -6,7 +6,7 @@ namespace SharpCompress.Compressors.Xz; [CLSCompliant(false)] -public class XZIndexRecord +public partial class XZIndexRecord { public ulong UnpaddedSize { get; private set; } public ulong UncompressedSize { get; private set; } @@ -20,16 +20,4 @@ public static XZIndexRecord FromBinaryReader(BinaryReader br) record.UncompressedSize = br.ReadXZInteger(); return record; } - - public static async Task FromBinaryReaderAsync( - BinaryReader br, - CancellationToken cancellationToken = default - ) - { - var record = new XZIndexRecord(); - record.UnpaddedSize = await br.ReadXZIntegerAsync(cancellationToken).ConfigureAwait(false); - record.UncompressedSize = await br.ReadXZIntegerAsync(cancellationToken) - .ConfigureAwait(false); - return record; - } } diff --git a/src/SharpCompress/Compressors/Xz/XZStream.Async.cs b/src/SharpCompress/Compressors/Xz/XZStream.Async.cs new file mode 100644 index 000000000..25c6bcca9 --- /dev/null +++ b/src/SharpCompress/Compressors/Xz/XZStream.Async.cs @@ -0,0 +1,135 @@ +#nullable disable + +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.Xz; + +public sealed partial class XZStream +{ + public static async ValueTask IsXZStreamAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + try + { + return null + != await XZHeader.FromStreamAsync(stream, cancellationToken).ConfigureAwait(false); + } + catch (Exception) + { + return false; + } + } + + /// + /// Asynchronously reads bytes from the current stream into a buffer. + /// + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + var bytesRead = 0; + if (_endOfStream) + { + return bytesRead; + } + + if (!HeaderIsRead) + { + await ReadHeaderAsync(cancellationToken).ConfigureAwait(false); + } + + bytesRead = await ReadBlocksAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + if (bytesRead < count) + { + _endOfStream = true; + await ReadIndexAsync(cancellationToken).ConfigureAwait(false); + await ReadFooterAsync(cancellationToken).ConfigureAwait(false); + } + return bytesRead; + } + + /// + /// Asynchronously reads and validates the XZ header. + /// + private async ValueTask ReadHeaderAsync(CancellationToken cancellationToken = default) + { + Header = await XZHeader + .FromStreamAsync(BaseStream, cancellationToken) + .ConfigureAwait(false); + AssertBlockCheckTypeIsSupported(); + HeaderIsRead = true; + } + + /// + /// Asynchronously reads the XZ index. + /// + private async ValueTask ReadIndexAsync(CancellationToken cancellationToken = default) => + Index = await XZIndex + .FromStreamAsync(BaseStream, true, cancellationToken) + .ConfigureAwait(false); + + /// + /// Asynchronously reads the XZ footer. + /// + private async ValueTask ReadFooterAsync(CancellationToken cancellationToken = default) => + Footer = await XZFooter + .FromStreamAsync(BaseStream, cancellationToken) + .ConfigureAwait(false); + + /// + /// Asynchronously reads blocks of data from the stream. + /// + private async ValueTask ReadBlocksAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken = default + ) + { + var bytesRead = 0; + if (_currentBlock is null) + { + NextBlock(); + } + + for (; ; ) + { + try + { + if (bytesRead >= count) + { + break; + } + + var remaining = count - bytesRead; + var newOffset = offset + bytesRead; + var justRead = await _currentBlock + .ReadAsync(buffer, newOffset, remaining, cancellationToken) + .ConfigureAwait(false); + if (justRead < remaining) + { + NextBlock(); + } + + bytesRead += justRead; + } + catch (XZIndexMarkerReachedException) + { + break; + } + } + return bytesRead; + } +} diff --git a/src/SharpCompress/Compressors/Xz/XZStream.cs b/src/SharpCompress/Compressors/Xz/XZStream.cs index 1e3051d6b..d68334a13 100644 --- a/src/SharpCompress/Compressors/Xz/XZStream.cs +++ b/src/SharpCompress/Compressors/Xz/XZStream.cs @@ -10,7 +10,7 @@ namespace SharpCompress.Compressors.Xz; [CLSCompliant(false)] -public sealed class XZStream : XZReadOnlyStream, IStreamStack +public sealed partial class XZStream : XZReadOnlyStream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -106,35 +106,6 @@ public override int Read(byte[] buffer, int offset, int count) return bytesRead; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - var bytesRead = 0; - if (_endOfStream) - { - return bytesRead; - } - - if (!HeaderIsRead) - { - await ReadHeaderAsync(cancellationToken).ConfigureAwait(false); - } - - bytesRead = await ReadBlocksAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - if (bytesRead < count) - { - _endOfStream = true; - await ReadIndexAsync(cancellationToken).ConfigureAwait(false); - await ReadFooterAsync(cancellationToken).ConfigureAwait(false); - } - return bytesRead; - } - private void ReadHeader() { Header = XZHeader.FromStream(BaseStream); @@ -142,30 +113,12 @@ private void ReadHeader() HeaderIsRead = true; } - private async ValueTask ReadHeaderAsync(CancellationToken cancellationToken = default) - { - Header = await XZHeader - .FromStreamAsync(BaseStream, cancellationToken) - .ConfigureAwait(false); - AssertBlockCheckTypeIsSupported(); - HeaderIsRead = true; - } - private void ReadIndex() => Index = XZIndex.FromStream(BaseStream, true); - private async ValueTask ReadIndexAsync(CancellationToken cancellationToken = default) => - Index = await XZIndex - .FromStreamAsync(BaseStream, true, cancellationToken) - .ConfigureAwait(false); - // TODO verify Index private void ReadFooter() => Footer = XZFooter.FromStream(BaseStream); // TODO verify footer - private async ValueTask ReadFooterAsync(CancellationToken cancellationToken = default) => - Footer = await XZFooter - .FromStreamAsync(BaseStream, cancellationToken) - .ConfigureAwait(false); private int ReadBlocks(byte[] buffer, int offset, int count) { @@ -202,48 +155,6 @@ private int ReadBlocks(byte[] buffer, int offset, int count) return bytesRead; } - private async ValueTask ReadBlocksAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken = default - ) - { - var bytesRead = 0; - if (_currentBlock is null) - { - NextBlock(); - } - - for (; ; ) - { - try - { - if (bytesRead >= count) - { - break; - } - - var remaining = count - bytesRead; - var newOffset = offset + bytesRead; - var justRead = await _currentBlock - .ReadAsync(buffer, newOffset, remaining, cancellationToken) - .ConfigureAwait(false); - if (justRead < remaining) - { - NextBlock(); - } - - bytesRead += justRead; - } - catch (XZIndexMarkerReachedException) - { - break; - } - } - return bytesRead; - } - private void NextBlock() => _currentBlock = new XZBlock(BaseStream, Header.BlockCheckType, Header.BlockCheckSize); } diff --git a/src/SharpCompress/Compressors/ZStandard/CompressionStream.Async.cs b/src/SharpCompress/Compressors/ZStandard/CompressionStream.Async.cs new file mode 100644 index 000000000..7a16b500b --- /dev/null +++ b/src/SharpCompress/Compressors/ZStandard/CompressionStream.Async.cs @@ -0,0 +1,118 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.ZStandard.Unsafe; + +namespace SharpCompress.Compressors.ZStandard; + +public partial class CompressionStream : Stream +{ +#if !LEGACY_DOTNET + public override async ValueTask DisposeAsync() +#else + public async ValueTask DisposeAsync() +#endif + { + if (compressor == null) + { + return; + } + + try + { + await FlushInternalAsync(ZSTD_EndDirective.ZSTD_e_end).ConfigureAwait(false); + } + finally + { + ReleaseUnmanagedResources(); + GC.SuppressFinalize(this); + } + } + + public override async Task FlushAsync(CancellationToken cancellationToken) => + await FlushInternalAsync(ZSTD_EndDirective.ZSTD_e_flush, cancellationToken) + .ConfigureAwait(false); + + private async ValueTask FlushInternalAsync( + ZSTD_EndDirective directive, + CancellationToken cancellationToken = default + ) => await WriteInternalAsync(null, directive, cancellationToken).ConfigureAwait(false); + +#if !LEGACY_DOTNET + private async ValueTask WriteInternalAsync( + ReadOnlyMemory? buffer, + ZSTD_EndDirective directive, + CancellationToken cancellationToken = default + ) +#else + private async ValueTask WriteInternalAsync( + ReadOnlyMemory? buffer, + ZSTD_EndDirective directive, + CancellationToken cancellationToken = default + ) +#endif + { + EnsureNotDisposed(); + + var input = new ZSTD_inBuffer_s + { + pos = 0, + size = buffer.HasValue ? (nuint)buffer.Value.Length : 0, + }; + nuint remaining; + do + { + output.pos = 0; + remaining = CompressStream( + ref input, + buffer.HasValue ? buffer.Value.Span : null, + directive + ); + + var written = (int)output.pos; + if (written > 0) + { + await innerStream + .WriteAsync(outputBuffer, 0, written, cancellationToken) + .ConfigureAwait(false); + } + } while ( + directive == ZSTD_EndDirective.ZSTD_e_continue ? input.pos < input.size : remaining > 0 + ); + } + +#if !LEGACY_DOTNET + + public override Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) => WriteAsync(new ReadOnlyMemory(buffer, offset, count), cancellationToken).AsTask(); + + public override async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) => + await WriteInternalAsync(buffer, ZSTD_EndDirective.ZSTD_e_continue, cancellationToken) + .ConfigureAwait(false); +#else + + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) => + await WriteAsync(new ReadOnlyMemory(buffer, offset, count), cancellationToken) + .ConfigureAwait(false); + + public async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) => + await WriteInternalAsync(buffer, ZSTD_EndDirective.ZSTD_e_continue, cancellationToken) + .ConfigureAwait(false); +#endif +} diff --git a/src/SharpCompress/Compressors/ZStandard/CompressionStream.cs b/src/SharpCompress/Compressors/ZStandard/CompressionStream.cs index df4b4d687..21e341ce0 100644 --- a/src/SharpCompress/Compressors/ZStandard/CompressionStream.cs +++ b/src/SharpCompress/Compressors/ZStandard/CompressionStream.cs @@ -7,7 +7,7 @@ namespace SharpCompress.Compressors.ZStandard; -public class CompressionStream : Stream +public partial class CompressionStream : Stream { private readonly Stream innerStream; private readonly byte[] outputBuffer; @@ -33,13 +33,19 @@ public CompressionStream( ) { if (stream == null) + { throw new ArgumentNullException(nameof(stream)); + } if (!stream.CanWrite) + { throw new ArgumentException("Stream is not writable", nameof(stream)); + } if (bufferSize < 0) + { throw new ArgumentOutOfRangeException(nameof(bufferSize)); + } innerStream = stream; this.compressor = compressor; @@ -74,35 +80,19 @@ public void LoadDictionary(byte[] dict) ~CompressionStream() => Dispose(false); -#if !LEGACY_DOTNET - public override async ValueTask DisposeAsync() -#else - public async ValueTask DisposeAsync() -#endif - { - if (compressor == null) - return; - - try - { - await FlushInternalAsync(ZSTD_EndDirective.ZSTD_e_end).ConfigureAwait(false); - } - finally - { - ReleaseUnmanagedResources(); - GC.SuppressFinalize(this); - } - } - protected override void Dispose(bool disposing) { if (compressor == null) + { return; + } try { if (disposing) + { FlushInternal(ZSTD_EndDirective.ZSTD_e_end); + } } finally { @@ -131,17 +121,8 @@ private void ReleaseUnmanagedResources() public override void Flush() => FlushInternal(ZSTD_EndDirective.ZSTD_e_flush); - public override async Task FlushAsync(CancellationToken cancellationToken) => - await FlushInternalAsync(ZSTD_EndDirective.ZSTD_e_flush, cancellationToken) - .ConfigureAwait(false); - private void FlushInternal(ZSTD_EndDirective directive) => WriteInternal(null, directive); - private async ValueTask FlushInternalAsync( - ZSTD_EndDirective directive, - CancellationToken cancellationToken = default - ) => await WriteInternalAsync(null, directive, cancellationToken).ConfigureAwait(false); - public override void Write(byte[] buffer, int offset, int count) => Write(new ReadOnlySpan(buffer, offset, count)); @@ -170,88 +151,14 @@ private void WriteInternal(ReadOnlySpan buffer, ZSTD_EndDirective directiv var written = (int)output.pos; if (written > 0) + { innerStream.Write(outputBuffer, 0, written); + } } while ( directive == ZSTD_EndDirective.ZSTD_e_continue ? input.pos < input.size : remaining > 0 ); } -#if !LEGACY_DOTNET - private async ValueTask WriteInternalAsync( - ReadOnlyMemory? buffer, - ZSTD_EndDirective directive, - CancellationToken cancellationToken = default - ) -#else - private async ValueTask WriteInternalAsync( - ReadOnlyMemory? buffer, - ZSTD_EndDirective directive, - CancellationToken cancellationToken = default - ) -#endif - - { - EnsureNotDisposed(); - - var input = new ZSTD_inBuffer_s - { - pos = 0, - size = buffer.HasValue ? (nuint)buffer.Value.Length : 0, - }; - nuint remaining; - do - { - output.pos = 0; - remaining = CompressStream( - ref input, - buffer.HasValue ? buffer.Value.Span : null, - directive - ); - - var written = (int)output.pos; - if (written > 0) - await innerStream - .WriteAsync(outputBuffer, 0, written, cancellationToken) - .ConfigureAwait(false); - } while ( - directive == ZSTD_EndDirective.ZSTD_e_continue ? input.pos < input.size : remaining > 0 - ); - } - -#if !LEGACY_DOTNET - - public override Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) => WriteAsync(new ReadOnlyMemory(buffer, offset, count), cancellationToken).AsTask(); - - public override async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) => - await WriteInternalAsync(buffer, ZSTD_EndDirective.ZSTD_e_continue, cancellationToken) - .ConfigureAwait(false); -#else - - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) => - await WriteAsync(new ReadOnlyMemory(buffer, offset, count), cancellationToken) - .ConfigureAwait(false); - - public async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) => - await WriteInternalAsync(buffer, ZSTD_EndDirective.ZSTD_e_continue, cancellationToken) - .ConfigureAwait(false); -#endif - internal unsafe nuint CompressStream( ref ZSTD_inBuffer_s input, ReadOnlySpan inputBuffer, @@ -292,7 +199,9 @@ public override int Read(byte[] buffer, int offset, int count) => private void EnsureNotDisposed() { if (compressor == null) + { throw new ObjectDisposedException(nameof(CompressionStream)); + } } public void SetPledgedSrcSize(ulong pledgedSrcSize) diff --git a/src/SharpCompress/Compressors/ZStandard/Compressor.cs b/src/SharpCompress/Compressors/ZStandard/Compressor.cs index 668606016..c1a60ce00 100644 --- a/src/SharpCompress/Compressors/ZStandard/Compressor.cs +++ b/src/SharpCompress/Compressors/ZStandard/Compressor.cs @@ -62,9 +62,11 @@ public void LoadDictionary(ReadOnlySpan dict) { using var cctx = handle.Acquire(); fixed (byte* dictPtr = dict) + { Unsafe .Methods.ZSTD_CCtx_loadDictionary(cctx, dictPtr, (nuint)dict.Length) .EnsureZstdSuccess(); + } } public Compressor(int level = DefaultCompressionLevel) diff --git a/src/SharpCompress/Compressors/ZStandard/DecompressionStream.Async.cs b/src/SharpCompress/Compressors/ZStandard/DecompressionStream.Async.cs new file mode 100644 index 000000000..5cbdada28 --- /dev/null +++ b/src/SharpCompress/Compressors/ZStandard/DecompressionStream.Async.cs @@ -0,0 +1,91 @@ +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.ZStandard.Unsafe; + +namespace SharpCompress.Compressors.ZStandard; + +public partial class DecompressionStream +{ +#if !LEGACY_DOTNET + public override Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) => ReadAsync(new Memory(buffer, offset, count), cancellationToken).AsTask(); + + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) +#else + + public override Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) => ReadAsync(new Memory(buffer, offset, count), cancellationToken).AsTask(); + + public async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) +#endif + { + EnsureNotDisposed(); + + // Guard against infinite loop (output.pos would never become non-zero) + if (buffer.Length == 0) + { + return 0; + } + + var output = new ZSTD_outBuffer_s { pos = 0, size = (nuint)buffer.Length }; + while (true) + { + // If there is still input available, or there might be data buffered in the decompressor context, flush that out + while (input.pos < input.size || !contextDrained) + { + nuint oldInputPos = input.pos; + nuint result = DecompressStream(ref output, buffer.Span); + if (output.pos > 0 || oldInputPos != input.pos) + { + // Keep result from last decompress call that made some progress, so we known if we're at end of frame + lastDecompressResult = result; + } + // If decompression filled the output buffer, there might still be data buffered in the decompressor context + contextDrained = output.pos < output.size; + // If we have data to return, return it immediately, so we won't stall on Read + if (output.pos > 0) + { + return (int)output.pos; + } + } + + // Otherwise, read some more input + int bytesRead; + if ( + ( + bytesRead = await innerStream + .ReadAsync(inputBuffer, 0, inputBufferSize, cancellationToken) + .ConfigureAwait(false) + ) == 0 + ) + { + if (checkEndOfStream && lastDecompressResult != 0) + { + throw new EndOfStreamException("Premature end of stream"); + } + + return 0; + } + + input.size = (nuint)bytesRead; + input.pos = 0; + } + } +} diff --git a/src/SharpCompress/Compressors/ZStandard/DecompressionStream.cs b/src/SharpCompress/Compressors/ZStandard/DecompressionStream.cs index c1aed7662..97d289774 100644 --- a/src/SharpCompress/Compressors/ZStandard/DecompressionStream.cs +++ b/src/SharpCompress/Compressors/ZStandard/DecompressionStream.cs @@ -7,7 +7,7 @@ namespace SharpCompress.Compressors.ZStandard; -public class DecompressionStream : Stream +public partial class DecompressionStream : Stream { private readonly Stream innerStream; private readonly byte[] inputBuffer; @@ -38,13 +38,19 @@ public DecompressionStream( ) { if (stream == null) + { throw new ArgumentNullException(nameof(stream)); + } if (!stream.CanRead) + { throw new ArgumentException("Stream is not readable", nameof(stream)); + } if (bufferSize < 0) + { throw new ArgumentOutOfRangeException(nameof(bufferSize)); + } innerStream = stream; this.decompressor = decompressor; @@ -83,7 +89,9 @@ public void LoadDictionary(byte[] dict) protected override void Dispose(bool disposing) { if (decompressor == null) + { return; + } if (!preserveDecompressor) { @@ -158,86 +166,6 @@ public int Read(Span buffer) } } -#if !LEGACY_DOTNET - public override Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) => ReadAsync(new Memory(buffer, offset, count), cancellationToken).AsTask(); - - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) -#else - - public override Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) => ReadAsync(new Memory(buffer, offset, count), cancellationToken).AsTask(); - - public async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) -#endif - { - EnsureNotDisposed(); - - // Guard against infinite loop (output.pos would never become non-zero) - if (buffer.Length == 0) - { - return 0; - } - - var output = new ZSTD_outBuffer_s { pos = 0, size = (nuint)buffer.Length }; - while (true) - { - // If there is still input available, or there might be data buffered in the decompressor context, flush that out - while (input.pos < input.size || !contextDrained) - { - nuint oldInputPos = input.pos; - nuint result = DecompressStream(ref output, buffer.Span); - if (output.pos > 0 || oldInputPos != input.pos) - { - // Keep result from last decompress call that made some progress, so we known if we're at end of frame - lastDecompressResult = result; - } - // If decompression filled the output buffer, there might still be data buffered in the decompressor context - contextDrained = output.pos < output.size; - // If we have data to return, return it immediately, so we won't stall on Read - if (output.pos > 0) - { - return (int)output.pos; - } - } - - // Otherwise, read some more input - int bytesRead; - if ( - ( - bytesRead = await innerStream - .ReadAsync(inputBuffer, 0, inputBufferSize, cancellationToken) - .ConfigureAwait(false) - ) == 0 - ) - { - if (checkEndOfStream && lastDecompressResult != 0) - { - throw new EndOfStreamException("Premature end of stream"); - } - - return 0; - } - - input.size = (nuint)bytesRead; - input.pos = 0; - } - } - private unsafe nuint DecompressStream(ref ZSTD_outBuffer_s output, Span outputBuffer) { fixed (byte* inputBufferPtr = inputBuffer) @@ -273,7 +201,9 @@ public override void Write(byte[] buffer, int offset, int count) => private void EnsureNotDisposed() { if (decompressor == null) + { throw new ObjectDisposedException(nameof(DecompressionStream)); + } } #if LEGACY_DOTNET diff --git a/src/SharpCompress/Compressors/ZStandard/Decompressor.cs b/src/SharpCompress/Compressors/ZStandard/Decompressor.cs index 8a63c4d9d..06da3b8f2 100644 --- a/src/SharpCompress/Compressors/ZStandard/Decompressor.cs +++ b/src/SharpCompress/Compressors/ZStandard/Decompressor.cs @@ -36,17 +36,21 @@ public void LoadDictionary(ReadOnlySpan dict) { using var dctx = handle.Acquire(); fixed (byte* dictPtr = dict) + { Unsafe .Methods.ZSTD_DCtx_loadDictionary(dctx, dictPtr, (nuint)dict.Length) .EnsureZstdSuccess(); + } } public static ulong GetDecompressedSize(ReadOnlySpan src) { fixed (byte* srcPtr = src) + { return Unsafe .Methods.ZSTD_decompressBound(srcPtr, (nuint)src.Length) .EnsureContentSizeOk(); + } } public static ulong GetDecompressedSize(ArraySegment src) => @@ -59,15 +63,20 @@ public Span Unwrap(ReadOnlySpan src, int maxDecompressedSize = int.M { var expectedDstSize = GetDecompressedSize(src); if (expectedDstSize > (ulong)maxDecompressedSize) + { throw new ZstdException( ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall, $"Decompressed content size {expectedDstSize} is greater than {nameof(maxDecompressedSize)} {maxDecompressedSize}" ); + } + if (expectedDstSize > Constants.MaxByteArrayLength) + { throw new ZstdException( ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall, $"Decompressed content size {expectedDstSize} is greater than max possible byte array size {Constants.MaxByteArrayLength}" ); + } var dest = new byte[expectedDstSize]; var length = Unwrap(src, dest); diff --git a/src/SharpCompress/Compressors/ZStandard/JobThreadPool.cs b/src/SharpCompress/Compressors/ZStandard/JobThreadPool.cs index e783940dc..313b59234 100644 --- a/src/SharpCompress/Compressors/ZStandard/JobThreadPool.cs +++ b/src/SharpCompress/Compressors/ZStandard/JobThreadPool.cs @@ -47,7 +47,9 @@ public void Join() private void Worker(object? obj) { if (obj is not JobThread poolThread) + { return; + } var cancellationToken = poolThread.CancellationTokenSource.Token; while (!queue.IsCompleted && !cancellationToken.IsCancellationRequested) @@ -55,7 +57,9 @@ private void Worker(object? obj) try { if (queue.TryTake(out var job, -1, cancellationToken)) + { ((delegate* managed)job.function)(job.opaque); + } } catch (InvalidOperationException) { } catch (OperationCanceledException) { } @@ -68,7 +72,9 @@ public JobThreadPool(int num, int queueSize) queue = new BlockingCollection(queueSize + 1); threads = new List(num); for (var i = 0; i < numThreads; i++) + { CreateThread(); + } } private void CreateThread() @@ -93,7 +99,9 @@ public void Resize(int num) else { for (var i = numThreads; i < num; i++) + { CreateThread(); + } } } @@ -115,16 +123,22 @@ public void Join(bool cancel = true) queue.CompleteAdding(); List jobThreads; lock (threads) + { jobThreads = new List(threads); + } if (cancel) { foreach (var thread in jobThreads) + { thread.Cancel(); + } } foreach (var thread in jobThreads) + { thread.Join(); + } } public void Dispose() diff --git a/src/SharpCompress/Compressors/ZStandard/SafeHandles.cs b/src/SharpCompress/Compressors/ZStandard/SafeHandles.cs index 3b49bdcec..79190428a 100644 --- a/src/SharpCompress/Compressors/ZStandard/SafeHandles.cs +++ b/src/SharpCompress/Compressors/ZStandard/SafeHandles.cs @@ -47,7 +47,10 @@ public static SafeCctxHandle Create() { var cctx = Unsafe.Methods.ZSTD_createCCtx(); if (cctx == null) + { throw new ZstdException(ZSTD_ErrorCode.ZSTD_error_GENERIC, "Failed to create cctx"); + } + safeHandle.SetHandle((IntPtr)cctx); success = true; } @@ -97,7 +100,10 @@ public static SafeDctxHandle Create() { var dctx = Unsafe.Methods.ZSTD_createDCtx(); if (dctx == null) + { throw new ZstdException(ZSTD_ErrorCode.ZSTD_error_GENERIC, "Failed to create dctx"); + } + safeHandle.SetHandle((IntPtr)dctx); success = true; } diff --git a/src/SharpCompress/Compressors/ZStandard/ThrowHelper.cs b/src/SharpCompress/Compressors/ZStandard/ThrowHelper.cs index 5e051deb1..a0b53d994 100644 --- a/src/SharpCompress/Compressors/ZStandard/ThrowHelper.cs +++ b/src/SharpCompress/Compressors/ZStandard/ThrowHelper.cs @@ -10,7 +10,9 @@ public static unsafe class ThrowHelper public static nuint EnsureZstdSuccess(this nuint returnValue) { if (Unsafe.Methods.ZSTD_isError(returnValue)) + { ThrowException(returnValue, Unsafe.Methods.ZSTD_getErrorName(returnValue)); + } return returnValue; } @@ -18,7 +20,9 @@ public static nuint EnsureZstdSuccess(this nuint returnValue) public static nuint EnsureZdictSuccess(this nuint returnValue) { if (Unsafe.Methods.ZDICT_isError(returnValue)) + { ThrowException(returnValue, Unsafe.Methods.ZDICT_getErrorName(returnValue)); + } return returnValue; } @@ -26,16 +30,20 @@ public static nuint EnsureZdictSuccess(this nuint returnValue) public static ulong EnsureContentSizeOk(this ulong returnValue) { if (returnValue == ZSTD_CONTENTSIZE_UNKNOWN) + { throw new ZstdException( ZSTD_ErrorCode.ZSTD_error_GENERIC, "Decompressed content size is not specified" ); + } if (returnValue == ZSTD_CONTENTSIZE_ERROR) + { throw new ZstdException( ZSTD_ErrorCode.ZSTD_error_GENERIC, "Decompressed content size cannot be determined (e.g. invalid magic number, srcSize too small)" ); + } return returnValue; } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Allocations.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Allocations.cs index cecdd011e..1b5571293 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Allocations.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Allocations.cs @@ -10,10 +10,13 @@ public static unsafe partial class Methods private static void* ZSTD_customMalloc(nuint size, ZSTD_customMem customMem) { if (customMem.customAlloc != null) + { return ((delegate* managed)customMem.customAlloc)( customMem.opaque, size ); + } + return malloc(size); } @@ -41,12 +44,16 @@ private static void ZSTD_customFree(void* ptr, ZSTD_customMem customMem) if (ptr != null) { if (customMem.customFree != null) + { ((delegate* managed)customMem.customFree)( customMem.opaque, ptr ); + } else + { free(ptr); + } } } } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Bitstream.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Bitstream.cs index 88302a494..513fe1b74 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Bitstream.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Bitstream.cs @@ -108,7 +108,10 @@ private static nuint BIT_initCStream(ref BIT_CStream_t bitC, void* startPtr, nui bitC.ptr = bitC.startPtr; bitC.endPtr = bitC.startPtr + dstCapacity - sizeof(nuint); if (dstCapacity <= (nuint)sizeof(nuint)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + return 0; } @@ -204,7 +207,10 @@ private static void BIT_flushBits( MEM_writeLEST(bitC_ptr, bitC_bitContainer); bitC_ptr += nbBytes; if (bitC_ptr > bitC_endPtr) + { bitC_ptr = bitC_endPtr; + } + bitC_bitPos &= 7; bitC_bitContainer >>= (int)(nbBytes * 8); } @@ -224,7 +230,10 @@ private static nuint BIT_closeCStream( BIT_addBitsFast(ref bitC_bitContainer, ref bitC_bitPos, 1, 1); BIT_flushBits(ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr); if (bitC_ptr >= bitC_endPtr) + { return 0; + } + return (nuint)(bitC_ptr - bitC_startPtr) + (nuint)(bitC_bitPos > 0 ? 1 : 0); } @@ -256,7 +265,9 @@ private static nuint BIT_initDStream(BIT_DStream_t* bitD, void* srcBuffer, nuint byte lastByte = ((byte*)srcBuffer)[srcSize - 1]; bitD->bitsConsumed = lastByte != 0 ? 8 - ZSTD_highbit32(lastByte) : 0; if (lastByte == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } } } else @@ -291,7 +302,9 @@ private static nuint BIT_initDStream(BIT_DStream_t* bitD, void* srcBuffer, nuint byte lastByte = ((byte*)srcBuffer)[srcSize - 1]; bitD->bitsConsumed = lastByte != 0 ? 8 - ZSTD_highbit32(lastByte) : 0; if (lastByte == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } bitD->bitsConsumed += (uint)((nuint)sizeof(nuint) - srcSize) * 8; @@ -409,7 +422,10 @@ private static BIT_DStream_status BIT_reloadDStream_internal(BIT_DStream_t* bitD private static BIT_DStream_status BIT_reloadDStreamFast(BIT_DStream_t* bitD) { if (bitD->ptr < bitD->limitPtr) + { return BIT_DStream_status.BIT_DStream_overflow; + } + return BIT_reloadDStream_internal(bitD); } @@ -450,7 +466,10 @@ private static BIT_DStream_status BIT_reloadDStream(BIT_DStream_t* bitD) if (bitD->ptr == bitD->start) { if (bitD->bitsConsumed < (uint)(sizeof(nuint) * 8)) + { return BIT_DStream_status.BIT_DStream_endOfBuffer; + } + return BIT_DStream_status.BIT_DStream_completed; } @@ -509,7 +528,9 @@ private static nuint BIT_initDStream(ref BIT_DStream_t bitD, void* srcBuffer, nu byte lastByte = ((byte*)srcBuffer)[srcSize - 1]; bitD.bitsConsumed = lastByte != 0 ? 8 - ZSTD_highbit32(lastByte) : 0; if (lastByte == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } } } else @@ -544,7 +565,9 @@ private static nuint BIT_initDStream(ref BIT_DStream_t bitD, void* srcBuffer, nu byte lastByte = ((byte*)srcBuffer)[srcSize - 1]; bitD.bitsConsumed = lastByte != 0 ? 8 - ZSTD_highbit32(lastByte) : 0; if (lastByte == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } bitD.bitsConsumed += (uint)((nuint)sizeof(nuint) - srcSize) * 8; @@ -638,7 +661,10 @@ private static BIT_DStream_status BIT_reloadDStreamFast( ) { if (bitD_ptr < bitD_limitPtr) + { return BIT_DStream_status.BIT_DStream_overflow; + } + return BIT_reloadDStream_internal( ref bitD_bitContainer, ref bitD_bitsConsumed, @@ -681,7 +707,10 @@ private static BIT_DStream_status BIT_reloadDStream( if (bitD_ptr == bitD_start) { if (bitD_bitsConsumed < (uint)(sizeof(nuint) * 8)) + { return BIT_DStream_status.BIT_DStream_endOfBuffer; + } + return BIT_DStream_status.BIT_DStream_completed; } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Cover.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Cover.cs index 11c79f3c6..878fe30d5 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Cover.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Cover.cs @@ -148,7 +148,10 @@ nuint dictBufferCapacity private static void COVER_best_init(COVER_best_s* best) { if (best == null) + { return; + } + SynchronizationWrapper.Init(&best->mutex); best->liveJobs = 0; best->dict = null; diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/EntropyCommon.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/EntropyCommon.cs index e14f925f5..4ee173966 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/EntropyCommon.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/EntropyCommon.cs @@ -71,9 +71,15 @@ nuint hbSize sizeof(sbyte) * 8 ); if (FSE_isError(countSize)) + { return countSize; + } + if (countSize > hbSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + return countSize; } } @@ -83,7 +89,10 @@ nuint hbSize bitStream = MEM_readLE32(ip); nbBits = (int)((bitStream & 0xF) + 5); if (nbBits > 15) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + bitStream >>= 4; bitCount = 4; *tableLogPtr = (uint)nbBits; @@ -125,7 +134,10 @@ nuint hbSize charnum += bitStream & 3; bitCount += 2; if (charnum >= maxSV1) + { break; + } + if (ip <= iend - 7 || ip + (bitCount >> 3) <= iend - 4) { assert(bitCount >> 3 <= 3); @@ -154,7 +166,10 @@ nuint hbSize { count = (int)(bitStream & (uint)(2 * threshold - 1)); if (count >= threshold) + { count -= max; + } + bitCount += nbBits; } @@ -175,13 +190,19 @@ nuint hbSize if (remaining < threshold) { if (remaining <= 1) + { break; + } + nbBits = (int)(ZSTD_highbit32((uint)remaining) + 1); threshold = 1 << nbBits - 1; } if (charnum >= maxSV1) + { break; + } + if (ip <= iend - 7 || ip + (bitCount >> 3) <= iend - 4) { ip += bitCount >> 3; @@ -199,11 +220,20 @@ nuint hbSize } if (remaining != 1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (charnum > maxSV1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooSmall)); + } + if (bitCount > 32) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + *maxSVPtr = charnum - 1; ip += bitCount + 7 >> 3; return (nuint)(ip - istart); @@ -316,16 +346,25 @@ int bmi2 nuint iSize; nuint oSize; if (srcSize == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + iSize = ip[0]; if (iSize >= 128) { oSize = iSize - 127; iSize = (oSize + 1) / 2; if (iSize + 1 > srcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + if (oSize >= hwSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + ip += 1; { uint n; @@ -339,7 +378,10 @@ int bmi2 else { if (iSize + 1 > srcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + oSize = FSE_decompress_wksp_bmi2( huffWeight, hwSize - 1, @@ -351,7 +393,9 @@ int bmi2 bmi2 ); if (FSE_isError(oSize)) + { return oSize; + } } memset(rankStats, 0, (12 + 1) * sizeof(uint)); @@ -361,18 +405,27 @@ int bmi2 for (n = 0; n < oSize; n++) { if (huffWeight[n] > 12) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + rankStats[huffWeight[n]]++; weightTotal += (uint)(1 << huffWeight[n] >> 1); } } if (weightTotal == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + { uint tableLog = ZSTD_highbit32(weightTotal) + 1; if (tableLog > 12) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + *tableLogPtr = tableLog; { uint total = (uint)(1 << (int)tableLog); @@ -380,14 +433,20 @@ int bmi2 uint verif = (uint)(1 << (int)ZSTD_highbit32(rest)); uint lastWeight = ZSTD_highbit32(rest) + 1; if (verif != rest) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + huffWeight[oSize] = (byte)lastWeight; rankStats[lastWeight]++; } } if (rankStats[1] < 2 || (rankStats[1] & 1) != 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + *nbSymbolsPtr = (uint)(oSize + 1); return iSize + 1; } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ErrorPrivate.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ErrorPrivate.cs index e211bda7d..72b5f2343 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ErrorPrivate.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ErrorPrivate.cs @@ -14,7 +14,10 @@ private static bool ERR_isError(nuint code) private static ZSTD_ErrorCode ERR_getErrorCode(nuint code) { if (!ERR_isError(code)) + { return 0; + } + return (ZSTD_ErrorCode)(0 - code); } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Fastcover.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Fastcover.cs index 2bd7e30c1..2aeccaabc 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Fastcover.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Fastcover.cs @@ -177,7 +177,10 @@ uint accel private static void FASTCOVER_ctx_destroy(FASTCOVER_ctx_t* ctx) { if (ctx == null) + { return; + } + free(ctx->freqs); ctx->freqs = null; free(ctx->offsets); diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/FseCompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/FseCompress.cs index c4c763a1f..68fbba627 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/FseCompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/FseCompress.cs @@ -40,7 +40,10 @@ nuint wkspSize * ((maxSymbolValue + 2 + (1UL << (int)tableLog)) / 2 + sizeof(ulong) / sizeof(uint)) > wkspSize ) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + tableU16[-2] = (ushort)tableLog; tableU16[-1] = (ushort)maxSymbolValue; assert(tableLog < 16); @@ -123,7 +126,9 @@ nuint wkspSize tableSymbol[position] = (byte)symbol; position = position + step & tableMask; while (position > highThreshold) + { position = position + step & tableMask; + } } } @@ -218,15 +223,24 @@ uint writeIsSafe { uint start = symbol; while (symbol < alphabetSize && normalizedCounter[symbol] == 0) + { symbol++; + } + if (symbol == alphabetSize) + { break; + } + while (symbol >= start + 24) { start += 24; bitStream += 0xFFFFU << bitCount; if (writeIsSafe == 0 && @out > oend - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + @out[0] = (byte)bitStream; @out[1] = (byte)(bitStream >> 8); @out += 2; @@ -245,7 +259,10 @@ uint writeIsSafe if (bitCount > 16) { if (writeIsSafe == 0 && @out > oend - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + @out[0] = (byte)bitStream; @out[1] = (byte)(bitStream >> 8); @out += 2; @@ -260,13 +277,19 @@ uint writeIsSafe remaining -= count < 0 ? -count : count; count++; if (count >= threshold) + { count += max; + } + bitStream += (uint)count << bitCount; bitCount += nbBits; bitCount -= count < max ? 1 : 0; previousIs0 = count == 1 ? 1 : 0; if (remaining < 1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + while (remaining < threshold) { nbBits--; @@ -277,7 +300,10 @@ uint writeIsSafe if (bitCount > 16) { if (writeIsSafe == 0 && @out > oend - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + @out[0] = (byte)bitStream; @out[1] = (byte)(bitStream >> 8); @out += 2; @@ -287,10 +313,16 @@ uint writeIsSafe } if (remaining != 1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + assert(symbol <= alphabetSize); if (writeIsSafe == 0 && @out > oend - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + @out[0] = (byte)bitStream; @out[1] = (byte)(bitStream >> 8); @out += (bitCount + 7) / 8; @@ -311,10 +343,17 @@ uint tableLog ) { if (tableLog > 14 - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + if (tableLog < 5) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if (bufferSize < FSE_NCountWriteBound(maxSymbolValue, tableLog)) + { return FSE_writeNCount_generic( buffer, bufferSize, @@ -323,6 +362,8 @@ uint tableLog tableLog, 0 ); + } + return FSE_writeNCount_generic( buffer, bufferSize, @@ -358,15 +399,30 @@ uint minus uint minBits = FSE_minTableLog(srcSize, maxSymbolValue); assert(srcSize > 1); if (tableLog == 0) + { tableLog = 13 - 2; + } + if (maxBitsSrc < tableLog) + { tableLog = maxBitsSrc; + } + if (minBits > tableLog) + { tableLog = minBits; + } + if (tableLog < 5) + { tableLog = 5; + } + if (tableLog > 14 - 2) + { tableLog = 14 - 2; + } + return tableLog; } @@ -426,7 +482,10 @@ short lowProbCount ToDistribute = (uint)(1 << (int)tableLog) - distributed; if (ToDistribute == 0) + { return 0; + } + if (total / ToDistribute > lowOne) { lowOne = (uint)(total * 3 / (ToDistribute * 2)); @@ -452,11 +511,13 @@ short lowProbCount uint maxV = 0, maxC = 0; for (s = 0; s <= maxSymbolValue; s++) + { if (count[s] > maxC) { maxV = s; maxC = count[s]; } + } norm[maxV] += (short)ToDistribute; return 0; @@ -465,11 +526,13 @@ short lowProbCount if (total == 0) { for (s = 0; ToDistribute > 0; s = (s + 1) % (maxSymbolValue + 1)) + { if (norm[s] > 0) { ToDistribute--; norm[s]++; } + } return 0; } @@ -489,7 +552,10 @@ short lowProbCount uint sEnd = (uint)(end >> (int)vStepLog); uint weight = sEnd - sStart; if (weight < 1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + norm[s] = (short)weight; tmpTotal = end; } @@ -534,13 +600,25 @@ uint useLowProbCount ) { if (tableLog == 0) + { tableLog = 13 - 2; + } + if (tableLog < 5) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if (tableLog > 14 - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + if (tableLog < FSE_minTableLog(total, maxSymbolValue)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + { short lowProbCount = (short)(useLowProbCount != 0 ? -1 : 1); ulong scale = 62 - tableLog; @@ -555,7 +633,10 @@ uint useLowProbCount for (s = 0; s <= maxSymbolValue; s++) { if (count[s] == total) + { return 0; + } + if (count[s] == 0) { normalizedCounter[s] = 0; @@ -601,10 +682,14 @@ uint useLowProbCount lowProbCount ); if (ERR_isError(errorCode)) + { return errorCode; + } } else + { normalizedCounter[largest] += (short)stillToDistribute; + } } return tableLog; @@ -645,11 +730,16 @@ uint fast System.Runtime.CompilerServices.Unsafe.SkipInit(out CState1); System.Runtime.CompilerServices.Unsafe.SkipInit(out CState2); if (srcSize <= 2) + { return 0; + } + { nuint initError = BIT_initCStream(ref bitC, dst, dstSize); if (ERR_isError(initError)) + { return 0; + } } nuint bitC_bitContainer = bitC.bitContainer; @@ -662,14 +752,18 @@ uint fast FSE_initCState2(ref CState2, ct, *--ip); FSE_encodeSymbol(ref bitC_bitContainer, ref bitC_bitPos, ref CState1, *--ip); if (fast != 0) + { BIT_flushBitsFast( ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr ); + } else + { BIT_flushBits(ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr); + } } else { @@ -683,34 +777,45 @@ uint fast FSE_encodeSymbol(ref bitC_bitContainer, ref bitC_bitPos, ref CState2, *--ip); FSE_encodeSymbol(ref bitC_bitContainer, ref bitC_bitPos, ref CState1, *--ip); if (fast != 0) + { BIT_flushBitsFast( ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr ); + } else + { BIT_flushBits(ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr); + } } while (ip > istart) { FSE_encodeSymbol(ref bitC_bitContainer, ref bitC_bitPos, ref CState2, *--ip); if (sizeof(nuint) * 8 < (14 - 2) * 2 + 7) + { if (fast != 0) + { BIT_flushBitsFast( ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr ); + } else + { BIT_flushBits( ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr ); + } + } + FSE_encodeSymbol(ref bitC_bitContainer, ref bitC_bitPos, ref CState1, *--ip); if (sizeof(nuint) * 8 > (14 - 2) * 4 + 7) { @@ -719,14 +824,18 @@ uint fast } if (fast != 0) + { BIT_flushBitsFast( ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr ); + } else + { BIT_flushBits(ref bitC_bitContainer, ref bitC_bitPos, ref bitC_ptr, bitC_endPtr); + } } FSE_flushCState( @@ -767,9 +876,13 @@ private static nuint FSE_compress_usingCTable( { uint fast = dstSize >= srcSize + (srcSize >> 7) + 4 + (nuint)sizeof(nuint) ? 1U : 0U; if (fast != 0) + { return FSE_compress_usingCTable_generic(dst, dstSize, src, srcSize, ct, 1); + } else + { return FSE_compress_usingCTable_generic(dst, dstSize, src, srcSize, ct, 0); + } } /*-***************************************** diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/FseDecompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/FseDecompress.cs index 12be4ef69..6fc7c3769 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/FseDecompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/FseDecompress.cs @@ -23,11 +23,20 @@ nuint wkspSize uint tableSize = (uint)(1 << (int)tableLog); uint highThreshold = tableSize - 1; if (sizeof(short) * (maxSymbolValue + 1) + (1UL << (int)tableLog) + 8 > wkspSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooLarge)); + } + if (maxSymbolValue > 255) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooLarge)); + } + if (tableLog > 14 - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + { FSE_DTableHeader DTableH; DTableH.tableLog = (ushort)tableLog; @@ -45,7 +54,10 @@ nuint wkspSize else { if (normalizedCounter[s] >= largeLimit) + { DTableH.fastMode = 0; + } + symbolNext[s] = (ushort)normalizedCounter[s]; } } @@ -111,12 +123,16 @@ nuint wkspSize tableDecode[position].symbol = (byte)s; position = position + step & tableMask; while (position > highThreshold) + { position = position + step & tableMask; + } } } if (position != 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } } { @@ -181,7 +197,9 @@ uint fast /* Init */ nuint _var_err__ = BIT_initDStream(ref bitD, cSrc, cSrcSize); if (ERR_isError(_var_err__)) + { return _var_err__; + } } FSE_initDState(ref state1, ref bitD, dt); @@ -222,6 +240,7 @@ uint fast ? FSE_decodeSymbolFast(ref state1, bitD_bitContainer, ref bitD_bitsConsumed) : FSE_decodeSymbol(ref state1, bitD_bitContainer, ref bitD_bitsConsumed); if ((14 - 2) * 2 + 7 > sizeof(nuint) * 8) + { BIT_reloadDStream( ref bitD_bitContainer, ref bitD_bitsConsumed, @@ -229,6 +248,8 @@ uint fast bitD_start, bitD_limitPtr ); + } + op[1] = fast != 0 ? FSE_decodeSymbolFast(ref state2, bitD_bitContainer, ref bitD_bitsConsumed) @@ -255,6 +276,7 @@ uint fast ? FSE_decodeSymbolFast(ref state1, bitD_bitContainer, ref bitD_bitsConsumed) : FSE_decodeSymbol(ref state1, bitD_bitContainer, ref bitD_bitsConsumed); if ((14 - 2) * 2 + 7 > sizeof(nuint) * 8) + { BIT_reloadDStream( ref bitD_bitContainer, ref bitD_bitsConsumed, @@ -262,6 +284,8 @@ uint fast bitD_start, bitD_limitPtr ); + } + op[3] = fast != 0 ? FSE_decodeSymbolFast(ref state2, bitD_bitContainer, ref bitD_bitsConsumed) @@ -271,7 +295,10 @@ uint fast while (true) { if (op > omax - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + *op++ = fast != 0 ? FSE_decodeSymbolFast(ref state1, bitD_bitContainer, ref bitD_bitsConsumed) @@ -294,7 +321,10 @@ uint fast } if (op > omax - 2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + *op++ = fast != 0 ? FSE_decodeSymbolFast(ref state2, bitD_bitContainer, ref bitD_bitsConsumed) @@ -341,7 +371,10 @@ int bmi2 nuint dtablePos = (nuint)(sizeof(FSE_DecompressWksp) / sizeof(uint)); uint* dtable = (uint*)workSpace + dtablePos; if (wkspSize < (nuint)sizeof(FSE_DecompressWksp)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + { nuint NCountLength = FSE_readNCount_bmi2( wksp->ncount, @@ -352,9 +385,15 @@ int bmi2 bmi2 ); if (ERR_isError(NCountLength)) + { return NCountLength; + } + if (tableLog > maxLog) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + assert(NCountLength <= cSrcSize); ip += NCountLength; cSrcSize -= NCountLength; @@ -375,7 +414,10 @@ int bmi2 ) * sizeof(uint) > wkspSize ) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + assert( (nuint)(sizeof(FSE_DecompressWksp) + (1 + (1 << (int)tableLog)) * sizeof(uint)) <= wkspSize @@ -395,7 +437,9 @@ int bmi2 wkspSize ); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { @@ -403,6 +447,7 @@ int bmi2 FSE_DTableHeader* DTableH = (FSE_DTableHeader*)ptr; uint fastMode = DTableH->fastMode; if (fastMode != 0) + { return FSE_decompress_usingDTable_generic( dst, dstCapacity, @@ -411,6 +456,8 @@ int bmi2 dtable, 1 ); + } + return FSE_decompress_usingDTable_generic(dst, dstCapacity, ip, cSrcSize, dtable, 0); } } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Hist.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Hist.cs index 10a433ce0..e9c5be35f 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Hist.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Hist.cs @@ -56,13 +56,20 @@ nuint srcSize } while (count[maxSymbolValue] == 0) + { maxSymbolValue--; + } + *maxSymbolValuePtr = maxSymbolValue; { uint s; for (s = 0; s <= maxSymbolValue; s++) + { if (count[s] > largestCount) + { largestCount = count[s]; + } + } } return largestCount; @@ -141,23 +148,34 @@ private static nuint HIST_count_parallel_wksp( } while (ip < iend) + { Counting1[*ip++]++; + } + { uint s; for (s = 0; s < 256; s++) { Counting1[s] += Counting2[s] + Counting3[s] + Counting4[s]; if (Counting1[s] > max) + { max = Counting1[s]; + } } } { uint maxSymbolValue = 255; while (Counting1[maxSymbolValue] == 0) + { maxSymbolValue--; + } + if (check != default && maxSymbolValue > *maxSymbolValuePtr) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooSmall)); + } + *maxSymbolValuePtr = maxSymbolValue; memmove(count, Counting1, countSize); } @@ -180,11 +198,20 @@ nuint workSpaceSize ) { if (sourceSize < 1500) + { return HIST_count_simple(count, maxSymbolValuePtr, source, sourceSize); + } + if (((nuint)workSpace & 3) != 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if (workSpaceSize < 1024 * sizeof(uint)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_workSpace_tooSmall)); + } + return HIST_count_parallel_wksp( count, maxSymbolValuePtr, @@ -208,10 +235,17 @@ nuint workSpaceSize ) { if (((nuint)workSpace & 3) != 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if (workSpaceSize < 1024 * sizeof(uint)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_workSpace_tooSmall)); + } + if (*maxSymbolValuePtr < 255) + { return HIST_count_parallel_wksp( count, maxSymbolValuePtr, @@ -220,6 +254,8 @@ nuint workSpaceSize HIST_checkInput_e.checkMaxSymbolValue, (uint*)workSpace ); + } + *maxSymbolValuePtr = 255; return HIST_countFast_wksp( count, diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/HufCompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/HufCompress.cs index 785c81437..1b8234da2 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/HufCompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/HufCompress.cs @@ -47,16 +47,27 @@ nuint workspaceSize sizeof(uint) ); if (workspaceSize < (nuint)sizeof(HUF_CompressWeightsWksp)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if (wtSize <= 1) + { return 0; + } + { /* never fails */ uint maxCount = HIST_count_simple(wksp->count, &maxSymbolValue, weightTable, wtSize); if (maxCount == wtSize) + { return 1; + } + if (maxCount == 1) + { return 0; + } } tableLog = FSE_optimalTableLog(tableLog, wtSize, maxSymbolValue); @@ -71,7 +82,9 @@ nuint workspaceSize 0 ); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { @@ -83,7 +96,10 @@ nuint workspaceSize tableLog ); if (ERR_isError(hSize)) + { return hSize; + } + op += hSize; } @@ -98,7 +114,9 @@ nuint workspaceSize sizeof(uint) * 41 ); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { @@ -110,9 +128,15 @@ nuint workspaceSize wksp->CTable ); if (ERR_isError(cSize)) + { return cSize; + } + if (cSize == 0) + { return 0; + } + op += cSize; } @@ -203,16 +227,31 @@ nuint workspaceSize assert(HUF_readCTableHeader(CTable).maxSymbolValue == maxSymbolValue); assert(HUF_readCTableHeader(CTable).tableLog == huffLog); if (workspaceSize < (nuint)sizeof(HUF_WriteCTableWksp)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if (maxSymbolValue > 255) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooLarge)); + } + wksp->bitsToWeight[0] = 0; for (n = 1; n < huffLog + 1; n++) + { wksp->bitsToWeight[n] = (byte)(huffLog + 1 - n); + } + for (n = 0; n < maxSymbolValue; n++) + { wksp->huffWeight[n] = wksp->bitsToWeight[HUF_getNbBits(ct[n])]; + } + if (maxDstSize < 1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + { nuint hSize = HUF_compressWeights( op + 1, @@ -223,7 +262,10 @@ nuint workspaceSize (nuint)sizeof(HUF_CompressWeightsWksp) ); if (ERR_isError(hSize)) + { return hSize; + } + if (hSize > 1 && hSize < maxSymbolValue / 2) { op[0] = (byte)hSize; @@ -232,13 +274,22 @@ nuint workspaceSize } if (maxSymbolValue > 256 - 128) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + if ((maxSymbolValue + 1) / 2 + 1 > maxDstSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + op[0] = (byte)(128 + (maxSymbolValue - 1)); wksp->huffWeight[maxSymbolValue] = 0; for (n = 0; n < maxSymbolValue; n += 2) + { op[n / 2 + 1] = (byte)((wksp->huffWeight[n] << 4) + wksp->huffWeight[n + 1]); + } + return (maxSymbolValue + 1) / 2 + 1; } @@ -270,12 +321,21 @@ private static nuint HUF_readCTable( srcSize ); if (ERR_isError(readSize)) + { return readSize; + } + *hasZeroWeights = rankVal[0] > 0 ? 1U : 0U; if (tableLog > 12) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + if (nbSymbols > *maxSymbolValuePtr + 1) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooSmall)); + } + *maxSymbolValuePtr = nbSymbols - 1; HUF_writeCTableHeader(CTable, tableLog, *maxSymbolValuePtr); { @@ -307,7 +367,9 @@ private static nuint HUF_readCTable( { uint n; for (n = 0; n < nbSymbols; n++) + { nbPerRank[HUF_getNbBits(ct[n])]++; + } } valPerRank[tableLog + 1] = 0; @@ -326,7 +388,9 @@ private static nuint HUF_readCTable( { uint n; for (n = 0; n < nbSymbols; n++) + { HUF_setValue(ct + n, valPerRank[HUF_getNbBits(ct[n])]++); + } } } @@ -343,7 +407,10 @@ private static uint HUF_getNbBitsFromCTable(nuint* CTable, uint symbolValue) nuint* ct = CTable + 1; assert(symbolValue <= 255); if (symbolValue > HUF_readCTableHeader(CTable).maxSymbolValue) + { return 0; + } + return (uint)HUF_getNbBits(ct[symbolValue]); } @@ -372,7 +439,10 @@ private static uint HUF_setMaxHeight(nodeElt_s* huffNode, uint lastNonNull, uint { uint largestBits = huffNode[lastNonNull].nbBits; if (largestBits <= targetNbBits) + { return largestBits; + } + { int totalCost = 0; uint baseCost = (uint)(1 << (int)(largestBits - targetNbBits)); @@ -386,7 +456,10 @@ private static uint HUF_setMaxHeight(nodeElt_s* huffNode, uint lastNonNull, uint assert(huffNode[n].nbBits <= targetNbBits); while (huffNode[n].nbBits == targetNbBits) + { --n; + } + assert(((uint)totalCost & baseCost - 1) == 0); totalCost >>= (int)(largestBits - targetNbBits); assert(totalCost > 0); @@ -400,7 +473,10 @@ private static uint HUF_setMaxHeight(nodeElt_s* huffNode, uint lastNonNull, uint for (pos = n; pos >= 0; pos--) { if (huffNode[pos].nbBits >= currentNbBits) + { continue; + } + currentNbBits = huffNode[pos].nbBits; rankLast[targetNbBits - currentNbBits] = (uint)pos; } @@ -417,27 +493,43 @@ private static uint HUF_setMaxHeight(nodeElt_s* huffNode, uint lastNonNull, uint uint highPos = rankLast[nBitsToDecrease]; uint lowPos = rankLast[nBitsToDecrease - 1]; if (highPos == noSymbol) + { continue; + } + if (lowPos == noSymbol) + { break; + } + { uint highTotal = huffNode[highPos].count; uint lowTotal = 2 * huffNode[lowPos].count; if (highTotal <= lowTotal) + { break; + } } } assert(rankLast[nBitsToDecrease] != noSymbol || nBitsToDecrease == 1); while (nBitsToDecrease <= 12 && rankLast[nBitsToDecrease] == noSymbol) + { nBitsToDecrease++; + } + assert(rankLast[nBitsToDecrease] != noSymbol); totalCost -= 1 << (int)(nBitsToDecrease - 1); huffNode[rankLast[nBitsToDecrease]].nbBits++; if (rankLast[nBitsToDecrease - 1] == noSymbol) + { rankLast[nBitsToDecrease - 1] = rankLast[nBitsToDecrease]; + } + if (rankLast[nBitsToDecrease] == 0) + { rankLast[nBitsToDecrease] = noSymbol; + } else { rankLast[nBitsToDecrease]--; @@ -445,7 +537,9 @@ private static uint HUF_setMaxHeight(nodeElt_s* huffNode, uint lastNonNull, uint huffNode[rankLast[nBitsToDecrease]].nbBits != targetNbBits - nBitsToDecrease ) + { rankLast[nBitsToDecrease] = noSymbol; + } } } @@ -454,7 +548,10 @@ private static uint HUF_setMaxHeight(nodeElt_s* huffNode, uint lastNonNull, uint if (rankLast[1] == noSymbol) { while (huffNode[n].nbBits == targetNbBits) + { n--; + } + huffNode[n + 1].nbBits--; assert(n >= 0); rankLast[1] = (uint)(n + 1); @@ -655,7 +752,10 @@ private static int HUF_buildTree(nodeElt_s* huffNode, uint maxSymbolValue) nodeRoot; nonNullRank = (int)maxSymbolValue; while (huffNode[nonNullRank].count == 0) + { nonNullRank--; + } + lowS = nonNullRank; nodeRoot = nodeNb + lowS - 1; lowN = nodeNb; @@ -664,7 +764,10 @@ private static int HUF_buildTree(nodeElt_s* huffNode, uint maxSymbolValue) nodeNb++; lowS -= 2; for (n = nodeNb; n <= nodeRoot; n++) + { huffNode[n].count = 1U << 30; + } + huffNode0[0].count = 1U << 31; while (nodeNb <= nodeRoot) { @@ -677,9 +780,15 @@ private static int HUF_buildTree(nodeElt_s* huffNode, uint maxSymbolValue) huffNode[nodeRoot].nbBits = 0; for (n = nodeRoot - 1; n >= 255 + 1; n--) + { huffNode[n].nbBits = (byte)(huffNode[huffNode[n].parent].nbBits + 1); + } + for (n = 0; n <= nonNullRank; n++) + { huffNode[n].nbBits = (byte)(huffNode[huffNode[n].parent].nbBits + 1); + } + return nonNullRank; } @@ -710,7 +819,10 @@ uint maxNbBits memset(valPerRank, 0, sizeof(ushort) * 13); int alphabetSize = (int)(maxSymbolValue + 1); for (n = 0; n <= nonNullRank; n++) + { nbPerRank[huffNode[n].nbBits]++; + } + { ushort min = 0; for (n = (int)maxNbBits; n > 0; n--) @@ -722,9 +834,15 @@ uint maxNbBits } for (n = 0; n < alphabetSize; n++) + { HUF_setNbBits(ct + huffNode[n].@byte, huffNode[n].nbBits); + } + for (n = 0; n < alphabetSize; n++) + { HUF_setValue(ct + n, valPerRank[HUF_getNbBits(ct[n])]++); + } + HUF_writeCTableHeader(CTable, maxNbBits, maxSymbolValue); } @@ -743,17 +861,29 @@ nuint wkspSize nodeElt_s* huffNode = huffNode0 + 1; int nonNullRank; if (wkspSize < (nuint)sizeof(HUF_buildCTable_wksp_tables)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_workSpace_tooSmall)); + } + if (maxNbBits == 0) + { maxNbBits = 11; + } + if (maxSymbolValue > 255) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooLarge)); + } + memset(huffNode0, 0, (uint)(sizeof(nodeElt_s) * 512)); HUF_sort(huffNode, count, maxSymbolValue, &wksp_tables->rankPosition.e0); nonNullRank = HUF_buildTree(huffNode, maxSymbolValue); maxNbBits = HUF_setMaxHeight(huffNode, (uint)nonNullRank, maxNbBits); if (maxNbBits > 12) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + HUF_buildCTableFromTree(CTable, huffNode, nonNullRank, maxSymbolValue, maxNbBits); return maxNbBits; } @@ -779,7 +909,10 @@ private static int HUF_validateCTable(nuint* CTable, uint* count, uint maxSymbol int s; assert(header.tableLog <= 12); if (header.maxSymbolValue < maxSymbolValue) + { return 0; + } + for (s = 0; s <= (int)maxSymbolValue; ++s) { bad |= count[s] != 0 && HUF_getNbBits(ct[s]) == 0 ? 1 : 0; @@ -806,7 +939,10 @@ private static nuint HUF_initCStream(ref HUF_CStream_t bitC, void* startPtr, nui endPtr = (byte*)startPtr + dstCapacity - sizeof(nuint), }; if (dstCapacity <= (nuint)sizeof(nuint)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + return 0; } @@ -890,7 +1026,9 @@ int kFast bitC_ptr += nbBytes; assert(kFast == 0 || bitC_ptr <= bitC_endPtr); if (kFast == 0 && bitC_ptr > bitC_endPtr) + { bitC_ptr = bitC_endPtr; + } } /*! HUF_endMark() @@ -914,7 +1052,10 @@ private static nuint HUF_closeCStream(ref HUF_CStream_t bitC) { nuint nbBits = bitC.bitPos.e0 & 0xFF; if (bitC.ptr >= bitC.endPtr) + { return 0; + } + return (nuint)(bitC.ptr - bitC.startPtr) + (nuint)(nbBits > 0 ? 1 : 0); } } @@ -1086,15 +1227,21 @@ private static nuint HUF_compress1X_usingCTable_internal_body( HUF_CStream_t bitC; System.Runtime.CompilerServices.Unsafe.SkipInit(out bitC); if (dstSize < 8) + { return 0; + } + { byte* op = ostart; nuint initErr = HUF_initCStream(ref bitC, op, (nuint)(oend - op)); if (ERR_isError(initErr)) + { return 0; + } } if (dstSize < HUF_tightCompressBound(srcSize, tableLog) || tableLog > 11) + { HUF_compress1X_usingCTable_internal_body_loop( ref bitC, ip, @@ -1104,6 +1251,7 @@ private static nuint HUF_compress1X_usingCTable_internal_body( 0, 0 ); + } else { if (MEM_32bits) @@ -1271,9 +1419,15 @@ int flags byte* oend = ostart + dstSize; byte* op = ostart; if (dstSize < 6 + 1 + 1 + 1 + 8) + { return 0; + } + if (srcSize < 12) + { return 0; + } + op += 6; assert(op <= oend); { @@ -1286,9 +1440,15 @@ int flags flags ); if (ERR_isError(cSize)) + { return cSize; + } + if (cSize == 0 || cSize > 65535) + { return 0; + } + MEM_writeLE16(ostart, (ushort)cSize); op += cSize; } @@ -1305,9 +1465,15 @@ int flags flags ); if (ERR_isError(cSize)) + { return cSize; + } + if (cSize == 0 || cSize > 65535) + { return 0; + } + MEM_writeLE16(ostart + 2, (ushort)cSize); op += cSize; } @@ -1324,9 +1490,15 @@ int flags flags ); if (ERR_isError(cSize)) + { return cSize; + } + if (cSize == 0 || cSize > 65535) + { return 0; + } + MEM_writeLE16(ostart + 4, (ushort)cSize); op += cSize; } @@ -1344,9 +1516,15 @@ int flags flags ); if (ERR_isError(cSize)) + { return cSize; + } + if (cSize == 0 || cSize > 65535) + { return 0; + } + op += cSize; } @@ -1421,7 +1599,9 @@ private static uint HUF_cardinality(uint* count, uint maxSymbolValue) for (i = 0; i < maxSymbolValue + 1; i++) { if (count[i] != 0) + { cardinality += 1; + } } return cardinality; @@ -1484,9 +1664,15 @@ int flags wkspSize ); if (ERR_isError(maxBits)) + { continue; + } + if (maxBits < optLogGuess && optLogGuess > minTableLog) + { break; + } + hSize = HUF_writeCTable_wksp( dst, dstSize, @@ -1499,7 +1685,10 @@ int flags } if (ERR_isError(hSize)) + { continue; + } + newSize = HUF_estimateCompressedSize(table, count, maxSymbolValue) + hSize; if (newSize > optSize + 1) { @@ -1545,21 +1734,45 @@ int flags byte* oend = ostart + dstSize; byte* op = ostart; if (wkspSize < (nuint)sizeof(HUF_compress_tables_t)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_workSpace_tooSmall)); + } + if (srcSize == 0) + { return 0; + } + if (dstSize == 0) + { return 0; + } + if (srcSize > 128 * 1024) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + if (huffLog > 12) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + if (maxSymbolValue > 255) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_maxSymbolValue_tooLarge)); + } + if (maxSymbolValue == 0) + { maxSymbolValue = 255; + } + if (huffLog == 0) + { huffLog = 11; + } + if ( (flags & (int)HUF_flags_e.HUF_flags_preferRepeat) != 0 && repeat != null @@ -1590,7 +1803,10 @@ int flags 4096 ); if (ERR_isError(largestBegin)) + { return largestBegin; + } + largestTotal += largestBegin; } @@ -1603,12 +1819,17 @@ int flags 4096 ); if (ERR_isError(largestEnd)) + { return largestEnd; + } + largestTotal += largestEnd; } if (largestTotal <= (2 * 4096 >> 7) + 4) + { return 0; + } } { @@ -1621,7 +1842,10 @@ int flags sizeof(uint) * 1024 ); if (ERR_isError(largest)) + { return largest; + } + if (largest == srcSize) { *ostart = ((byte*)src)[0]; @@ -1629,7 +1853,9 @@ int flags } if (largest <= (srcSize >> 7) + 4) + { return 0; + } } if ( @@ -1681,7 +1907,9 @@ int flags { nuint _var_err__ = maxBits; if (ERR_isError(_var_err__)) + { return _var_err__; + } } huffLog = (uint)maxBits; @@ -1698,7 +1926,10 @@ int flags (nuint)sizeof(HUF_WriteCTableWksp) ); if (ERR_isError(hSize)) + { return hSize; + } + if (repeat != null && *repeat != HUF_repeat.HUF_repeat_none) { nuint oldSize = HUF_estimateCompressedSize( @@ -1738,7 +1969,9 @@ int flags } if (oldHufTable != null) + { memcpy(oldHufTable, &table->CTable.e0, sizeof(ulong) * 257); + } } return HUF_compressCTable_internal( diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/HufDecompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/HufDecompress.cs index 262787084..fc3d62473 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/HufDecompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/HufDecompress.cs @@ -43,14 +43,26 @@ private static nuint HUF_DecompressFastArgs_init( byte* istart = (byte*)src; byte* oend = ZSTD_maybeNullPtrAdd((byte*)dst, (nint)dstSize); if (!BitConverter.IsLittleEndian || MEM_32bits) + { return 0; + } + if (dstSize == 0) + { return 0; + } + assert(dst != null); if (srcSize < 10) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (dtLog != 11) + { return 0; + } + { nuint length1 = MEM_readLE16(istart); nuint length2 = MEM_readLE16(istart + 2); @@ -61,9 +73,14 @@ private static nuint HUF_DecompressFastArgs_init( args->iend.e2 = args->iend.e1 + length2; args->iend.e3 = args->iend.e2 + length3; if (length1 < 8 || length2 < 8 || length3 < 8 || length4 < 8) + { return 0; + } + if (length4 > srcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } args->ip.e0 = args->iend.e1 - sizeof(ulong); @@ -75,7 +92,10 @@ private static nuint HUF_DecompressFastArgs_init( args->op.e2 = args->op.e1 + (dstSize + 3) / 4; args->op.e3 = args->op.e2 + (dstSize + 3) / 4; if (args->op.e3 >= oend) + { return 0; + } + args->bits[0] = HUF_initFastDStream(args->ip.e0); args->bits[1] = HUF_initFastDStream(args->ip.e1); args->bits[2] = HUF_initFastDStream(args->ip.e2); @@ -94,9 +114,15 @@ private static nuint HUF_initRemainingDStream( ) { if ((&args->op.e0)[stream] > segmentEnd) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if ((&args->ip.e0)[stream] < (&args->iend.e0)[stream] - 8) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + assert(sizeof(nuint) == 8); bit->bitContainer = MEM_readLEST((&args->ip.e0)[stream]); bit->bitsConsumed = ZSTD_countTrailingZeros64(args->bits[stream]); @@ -142,7 +168,10 @@ uint targetTableLog ) { if (tableLog > targetTableLog) + { return tableLog; + } + if (tableLog < targetTableLog) { uint scale = targetTableLog - tableLog; @@ -182,7 +211,10 @@ int flags HUF_DEltX1* dt = (HUF_DEltX1*)dtPtr; HUF_ReadDTableX1_Workspace* wksp = (HUF_ReadDTableX1_Workspace*)workSpace; if ((nuint)sizeof(HUF_ReadDTableX1_Workspace) > wkspSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + iSize = HUF_readStats_wksp( wksp->huffWeight, 255 + 1, @@ -196,7 +228,10 @@ int flags flags ); if (ERR_isError(iSize)) + { return iSize; + } + { DTableDesc dtd = HUF_getDTableDesc(DTable); uint maxTableLog = (uint)(dtd.maxTableLog + 1); @@ -209,7 +244,10 @@ int flags targetTableLog ); if (tableLog > (uint)(dtd.maxTableLog + 1)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + dtd.tableType = 0; dtd.tableLog = (byte)tableLog; memcpy(DTable, &dtd, (uint)sizeof(DTableDesc)); @@ -355,10 +393,16 @@ uint dtLog ) { if (MEM_64bits) + { *p++ = HUF_decodeSymbolX1(bitDPtr, dt, dtLog); + } + *p++ = HUF_decodeSymbolX1(bitDPtr, dt, dtLog); if (MEM_64bits) + { *p++ = HUF_decodeSymbolX1(bitDPtr, dt, dtLog); + } + *p++ = HUF_decodeSymbolX1(bitDPtr, dt, dtLog); } } @@ -368,12 +412,20 @@ uint dtLog } if (MEM_32bits) + { while ( BIT_reloadDStream(bitDPtr) == BIT_DStream_status.BIT_DStream_unfinished && p < pEnd ) + { *p++ = HUF_decodeSymbolX1(bitDPtr, dt, dtLog); + } + } + while (p < pEnd) + { *p++ = HUF_decodeSymbolX1(bitDPtr, dt, dtLog); + } + return (nuint)(pEnd - pStart); } @@ -396,12 +448,17 @@ private static nuint HUF_decompress1X1_usingDTable_internal_body( { nuint _var_err__ = BIT_initDStream(&bitD, cSrc, cSrcSize); if (ERR_isError(_var_err__)) + { return _var_err__; + } } HUF_decodeStreamX1(op, &bitD, oend, dt, dtLog); if (BIT_endOfDStream(&bitD) == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + return dstSize; } @@ -419,9 +476,15 @@ private static nuint HUF_decompress4X1_usingDTable_internal_body( ) { if (cSrcSize < 10) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (dstSize < 6) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + { byte* istart = (byte*)cSrc; byte* ostart = (byte*)dst; @@ -455,32 +518,46 @@ private static nuint HUF_decompress4X1_usingDTable_internal_body( uint dtLog = dtd.tableLog; uint endSignal = 1; if (length4 > cSrcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (opStart4 > oend) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + assert(dstSize >= 6); { nuint _var_err__ = BIT_initDStream(&bitD1, istart1, length1); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { nuint _var_err__ = BIT_initDStream(&bitD2, istart2, length2); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { nuint _var_err__ = BIT_initDStream(&bitD3, istart3, length3); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { nuint _var_err__ = BIT_initDStream(&bitD4, istart4, length4); if (ERR_isError(_var_err__)) + { return _var_err__; + } } if ((nuint)(oend - op4) >= (nuint)sizeof(nuint)) @@ -488,25 +565,49 @@ private static nuint HUF_decompress4X1_usingDTable_internal_body( for (; (endSignal & (uint)(op4 < olimit ? 1 : 0)) != 0; ) { if (MEM_64bits) + { *op1++ = HUF_decodeSymbolX1(&bitD1, dt, dtLog); + } + if (MEM_64bits) + { *op2++ = HUF_decodeSymbolX1(&bitD2, dt, dtLog); + } + if (MEM_64bits) + { *op3++ = HUF_decodeSymbolX1(&bitD3, dt, dtLog); + } + if (MEM_64bits) + { *op4++ = HUF_decodeSymbolX1(&bitD4, dt, dtLog); + } + *op1++ = HUF_decodeSymbolX1(&bitD1, dt, dtLog); *op2++ = HUF_decodeSymbolX1(&bitD2, dt, dtLog); *op3++ = HUF_decodeSymbolX1(&bitD3, dt, dtLog); *op4++ = HUF_decodeSymbolX1(&bitD4, dt, dtLog); if (MEM_64bits) + { *op1++ = HUF_decodeSymbolX1(&bitD1, dt, dtLog); + } + if (MEM_64bits) + { *op2++ = HUF_decodeSymbolX1(&bitD2, dt, dtLog); + } + if (MEM_64bits) + { *op3++ = HUF_decodeSymbolX1(&bitD3, dt, dtLog); + } + if (MEM_64bits) + { *op4++ = HUF_decodeSymbolX1(&bitD4, dt, dtLog); + } + *op1++ = HUF_decodeSymbolX1(&bitD1, dt, dtLog); *op2++ = HUF_decodeSymbolX1(&bitD2, dt, dtLog); *op3++ = HUF_decodeSymbolX1(&bitD3, dt, dtLog); @@ -531,11 +632,20 @@ private static nuint HUF_decompress4X1_usingDTable_internal_body( } if (op1 > opStart2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (op2 > opStart3) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (op3 > opStart4) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + HUF_decodeStreamX1(op1, &bitD1, opStart2, dt, dtLog); HUF_decodeStreamX1(op2, &bitD2, opStart3, dt, dtLog); HUF_decodeStreamX1(op3, &bitD3, opStart4, dt, dtLog); @@ -547,7 +657,9 @@ private static nuint HUF_decompress4X1_usingDTable_internal_body( & BIT_endOfDStream(&bitD3) & BIT_endOfDStream(&bitD4); if (endCheck == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } return dstSize; @@ -633,20 +745,29 @@ private static void HUF_decompress4X1_usingDTable_internal_fast_c_loop( nuint symbols = iters * 5; olimit = op3 + symbols; if (op3 == olimit) + { break; + } + { if (ip1 < ip0) + { goto _out; + } } { if (ip2 < ip1) + { goto _out; + } } { if (ip3 < ip2) + { goto _out; + } } } @@ -904,7 +1025,9 @@ private static nuint HUF_decompress4X1_usingDTable_internal_fast( } if (ret == 0) + { return 0; + } } assert(args.ip.e0 >= args.ilowest); @@ -925,9 +1048,14 @@ private static nuint HUF_decompress4X1_usingDTable_internal_fast( { BIT_DStream_t bit; if (segmentSize <= (nuint)(oend - segmentEnd)) + { segmentEnd += segmentSize; + } else + { segmentEnd = oend; + } + { nuint err_code = HUF_initRemainingDStream(&bit, &args, i, segmentEnd); if (ERR_isError(err_code)) @@ -944,7 +1072,9 @@ private static nuint HUF_decompress4X1_usingDTable_internal_fast( 11 ); if ((&args.op.e0)[i] != segmentEnd) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } } @@ -990,7 +1120,9 @@ int flags loopFn ); if (ret != 0) + { return ret; + } } return ((delegate* managed)fallbackFn)( @@ -1016,9 +1148,15 @@ int flags byte* ip = (byte*)cSrc; nuint hSize = HUF_readDTableX1_wksp(dctx, cSrc, cSrcSize, workSpace, wkspSize, flags); if (ERR_isError(hSize)) + { return hSize; + } + if (hSize >= cSrcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + ip += hSize; cSrcSize -= hSize; return HUF_decompress4X1_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx, flags); @@ -1255,7 +1393,10 @@ uint nbBitsBaseline int minWeight = (int)(nbBits + (uint)scaleLog); int s; if (minWeight < 1) + { minWeight = 1; + } + for (s = begin; s != end; ++s) { HUF_fillDTableX2Level2( @@ -1309,12 +1450,18 @@ int flags uint* rankStart; HUF_ReadDTableX2_Workspace* wksp = (HUF_ReadDTableX2_Workspace*)workSpace; if ((nuint)sizeof(HUF_ReadDTableX2_Workspace) > wkspSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); + } + rankStart = wksp->rankStart0 + 1; memset(wksp->rankStats, 0, sizeof(uint) * 13); memset(wksp->rankStart0, 0, sizeof(uint) * 15); if (maxTableLog > 12) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + iSize = HUF_readStats_wksp( wksp->weightList, 255 + 1, @@ -1328,11 +1475,20 @@ int flags flags ); if (ERR_isError(iSize)) + { return iSize; + } + if (tableLog > maxTableLog) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_tableLog_tooLarge)); + } + if (tableLog <= 11 && maxTableLog > 11) + { maxTableLog = 11; + } + for (maxW = tableLog; wksp->rankStats[maxW] == 0; maxW--) { } { @@ -1442,7 +1598,9 @@ uint dtLog { BIT_skipBits(DStream, dt[val].nbBits); if (DStream->bitsConsumed > (uint)(sizeof(nuint) * 8)) + { DStream->bitsConsumed = (uint)(sizeof(nuint) * 8); + } } } @@ -1483,10 +1641,16 @@ uint dtLog ) { if (MEM_64bits) + { p += HUF_decodeSymbolX2(p, bitDPtr, dt, dtLog); + } + p += HUF_decodeSymbolX2(p, bitDPtr, dt, dtLog); if (MEM_64bits) + { p += HUF_decodeSymbolX2(p, bitDPtr, dt, dtLog); + } + p += HUF_decodeSymbolX2(p, bitDPtr, dt, dtLog); } } @@ -1502,13 +1666,21 @@ uint dtLog BIT_reloadDStream(bitDPtr) == BIT_DStream_status.BIT_DStream_unfinished && p <= pEnd - 2 ) + { p += HUF_decodeSymbolX2(p, bitDPtr, dt, dtLog); + } + while (p <= pEnd - 2) + { p += HUF_decodeSymbolX2(p, bitDPtr, dt, dtLog); + } } if (p < pEnd) + { p += HUF_decodeLastSymbolX2(p, bitDPtr, dt, dtLog); + } + return (nuint)(p - pStart); } @@ -1526,7 +1698,9 @@ private static nuint HUF_decompress1X2_usingDTable_internal_body( /* Init */ nuint _var_err__ = BIT_initDStream(&bitD, cSrc, cSrcSize); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { @@ -1540,7 +1714,10 @@ private static nuint HUF_decompress1X2_usingDTable_internal_body( } if (BIT_endOfDStream(&bitD) == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + return dstSize; } @@ -1558,9 +1735,15 @@ private static nuint HUF_decompress4X2_usingDTable_internal_body( ) { if (cSrcSize < 10) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (dstSize < 6) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + { byte* istart = (byte*)cSrc; byte* ostart = (byte*)dst; @@ -1594,32 +1777,46 @@ private static nuint HUF_decompress4X2_usingDTable_internal_body( DTableDesc dtd = HUF_getDTableDesc(DTable); uint dtLog = dtd.tableLog; if (length4 > cSrcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (opStart4 > oend) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + assert(dstSize >= 6); { nuint _var_err__ = BIT_initDStream(&bitD1, istart1, length1); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { nuint _var_err__ = BIT_initDStream(&bitD2, istart2, length2); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { nuint _var_err__ = BIT_initDStream(&bitD3, istart3, length3); if (ERR_isError(_var_err__)) + { return _var_err__; + } } { nuint _var_err__ = BIT_initDStream(&bitD4, istart4, length4); if (ERR_isError(_var_err__)) + { return _var_err__; + } } if ((nuint)(oend - op4) >= (nuint)sizeof(nuint)) @@ -1627,16 +1824,28 @@ private static nuint HUF_decompress4X2_usingDTable_internal_body( for (; (endSignal & (uint)(op4 < olimit ? 1 : 0)) != 0; ) { if (MEM_64bits) + { op1 += HUF_decodeSymbolX2(op1, &bitD1, dt, dtLog); + } + op1 += HUF_decodeSymbolX2(op1, &bitD1, dt, dtLog); if (MEM_64bits) + { op1 += HUF_decodeSymbolX2(op1, &bitD1, dt, dtLog); + } + op1 += HUF_decodeSymbolX2(op1, &bitD1, dt, dtLog); if (MEM_64bits) + { op2 += HUF_decodeSymbolX2(op2, &bitD2, dt, dtLog); + } + op2 += HUF_decodeSymbolX2(op2, &bitD2, dt, dtLog); if (MEM_64bits) + { op2 += HUF_decodeSymbolX2(op2, &bitD2, dt, dtLog); + } + op2 += HUF_decodeSymbolX2(op2, &bitD2, dt, dtLog); endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_status.BIT_DStream_unfinished @@ -1647,16 +1856,28 @@ private static nuint HUF_decompress4X2_usingDTable_internal_body( ? 1U : 0U; if (MEM_64bits) + { op3 += HUF_decodeSymbolX2(op3, &bitD3, dt, dtLog); + } + op3 += HUF_decodeSymbolX2(op3, &bitD3, dt, dtLog); if (MEM_64bits) + { op3 += HUF_decodeSymbolX2(op3, &bitD3, dt, dtLog); + } + op3 += HUF_decodeSymbolX2(op3, &bitD3, dt, dtLog); if (MEM_64bits) + { op4 += HUF_decodeSymbolX2(op4, &bitD4, dt, dtLog); + } + op4 += HUF_decodeSymbolX2(op4, &bitD4, dt, dtLog); if (MEM_64bits) + { op4 += HUF_decodeSymbolX2(op4, &bitD4, dt, dtLog); + } + op4 += HUF_decodeSymbolX2(op4, &bitD4, dt, dtLog); endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_status.BIT_DStream_unfinished @@ -1670,11 +1891,20 @@ private static nuint HUF_decompress4X2_usingDTable_internal_body( } if (op1 > opStart2) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (op2 > opStart3) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (op3 > opStart4) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + HUF_decodeStreamX2(op1, &bitD1, opStart2, dt, dtLog); HUF_decodeStreamX2(op2, &bitD2, opStart3, dt, dtLog); HUF_decodeStreamX2(op3, &bitD3, opStart4, dt, dtLog); @@ -1686,7 +1916,9 @@ private static nuint HUF_decompress4X2_usingDTable_internal_body( & BIT_endOfDStream(&bitD3) & BIT_endOfDStream(&bitD4); if (endCheck == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } return dstSize; @@ -1799,20 +2031,29 @@ private static void HUF_decompress4X2_usingDTable_internal_fast_c_loop( olimit = op3 + iters * 5; if (op3 == olimit) + { break; + } + { if (ip1 < ip0) + { goto _out; + } } { if (ip2 < ip1) + { goto _out; + } } { if (ip3 < ip2) + { goto _out; + } } } @@ -2096,7 +2337,9 @@ private static nuint HUF_decompress4X2_usingDTable_internal_fast( } if (ret == 0) + { return 0; + } } assert(args.ip.e0 >= args.ilowest); @@ -2116,9 +2359,14 @@ private static nuint HUF_decompress4X2_usingDTable_internal_fast( { BIT_DStream_t bit; if (segmentSize <= (nuint)(oend - segmentEnd)) + { segmentEnd += segmentSize; + } else + { segmentEnd = oend; + } + { nuint err_code = HUF_initRemainingDStream(&bit, &args, i, segmentEnd); if (ERR_isError(err_code)) @@ -2135,7 +2383,9 @@ private static nuint HUF_decompress4X2_usingDTable_internal_fast( 11 ); if ((&args.op.e0)[i] != segmentEnd) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } } } @@ -2168,7 +2418,9 @@ int flags loopFn ); if (ret != 0) + { return ret; + } } return ((delegate* managed)fallbackFn)( @@ -2206,9 +2458,15 @@ int flags byte* ip = (byte*)cSrc; nuint hSize = HUF_readDTableX2_wksp(DCtx, cSrc, cSrcSize, workSpace, wkspSize, flags); if (ERR_isError(hSize)) + { return hSize; + } + if (hSize >= cSrcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + ip += hSize; cSrcSize -= hSize; return HUF_decompress1X2_usingDTable_internal(dst, dstSize, ip, cSrcSize, DCtx, flags); @@ -2228,9 +2486,15 @@ int flags byte* ip = (byte*)cSrc; nuint hSize = HUF_readDTableX2_wksp(dctx, cSrc, cSrcSize, workSpace, wkspSize, flags); if (ERR_isError(hSize)) + { return hSize; + } + if (hSize >= cSrcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + ip += hSize; cSrcSize -= hSize; return HUF_decompress4X2_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx, flags); @@ -2352,9 +2616,15 @@ int flags ) { if (dstSize == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + if (cSrcSize > dstSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (cSrcSize == dstSize) { memcpy(dst, cSrc, (uint)dstSize); @@ -2432,9 +2702,15 @@ int flags byte* ip = (byte*)cSrc; nuint hSize = HUF_readDTableX1_wksp(dctx, cSrc, cSrcSize, workSpace, wkspSize, flags); if (ERR_isError(hSize)) + { return hSize; + } + if (hSize >= cSrcSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + ip += hSize; cSrcSize -= hSize; return HUF_decompress1X1_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx, flags); @@ -2474,9 +2750,15 @@ int flags ) { if (dstSize == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + if (cSrcSize == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + { uint algoNb = HUF_selectDecoder(dstSize, cSrcSize); return algoNb != 0 diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Pool.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Pool.cs index a7a4e5fec..495fe8e67 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Pool.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Pool.cs @@ -80,7 +80,10 @@ public static void ZSTD_freeThreadPool(void* pool) private static nuint POOL_sizeof(void* ctx) { if (ctx == null) + { return 0; + } + var jobThreadPool = GetThreadPool(ctx); return (nuint)jobThreadPool.Size(); } @@ -89,7 +92,10 @@ private static nuint POOL_sizeof(void* ctx) private static int POOL_resize(void* ctx, nuint numThreads) { if (ctx == null) + { return 1; + } + var jobThreadPool = GetThreadPool(ctx); jobThreadPool.Resize((int)numThreads); return 0; diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Xxhash.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Xxhash.cs index ab8d814b5..347ac89c3 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Xxhash.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Xxhash.cs @@ -327,7 +327,10 @@ private static void ZSTD_XXH32_canonicalFromHash(XXH32_canonical_t* dst, uint ha { assert(sizeof(XXH32_canonical_t) == sizeof(uint)); if (BitConverter.IsLittleEndian) + { hash = BinaryPrimitives.ReverseEndianness(hash); + } + XXH_memcpy(dst, &hash, (nuint)sizeof(XXH32_canonical_t)); } @@ -356,11 +359,15 @@ private static ulong XXH_readBE64(void* ptr) private static ulong XXH_readLE64_align(void* ptr, XXH_alignment align) { if (align == XXH_alignment.XXH_unaligned) + { return XXH_readLE64(ptr); + } else + { return BitConverter.IsLittleEndian ? *(ulong*)ptr : BinaryPrimitives.ReverseEndianness(*(ulong*)ptr); + } } /*! @copydoc XXH32_round */ @@ -614,7 +621,10 @@ private static void ZSTD_XXH64_canonicalFromHash(XXH64_canonical_t* dst, ulong h { assert(sizeof(XXH64_canonical_t) == sizeof(ulong)); if (BitConverter.IsLittleEndian) + { hash = BinaryPrimitives.ReverseEndianness(hash); + } + XXH_memcpy(dst, &hash, (nuint)sizeof(XXH64_canonical_t)); } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/Zdict.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/Zdict.cs index a79aa0082..80e29e1e1 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/Zdict.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/Zdict.cs @@ -37,7 +37,10 @@ uint notificationLevel ); nuint cSize; if (srcSize > blockSizeMax) + { srcSize = blockSizeMax; + } + { nuint errorCode = ZSTD_compressBegin_usingCDict_deprecated(esr.zc, esr.dict); if (ERR_isError(errorCode)) @@ -58,7 +61,9 @@ uint notificationLevel { byte* bytePtr; for (bytePtr = seqStorePtr->litStart; bytePtr < seqStorePtr->lit; bytePtr++) + { countLit[*bytePtr]++; + } } { @@ -68,21 +73,27 @@ uint notificationLevel byte* codePtr = seqStorePtr->ofCode; uint u; for (u = 0; u < nbSeq; u++) + { offsetcodeCount[codePtr[u]]++; + } } { byte* codePtr = seqStorePtr->mlCode; uint u; for (u = 0; u < nbSeq; u++) + { matchlengthCount[codePtr[u]]++; + } } { byte* codePtr = seqStorePtr->llCode; uint u; for (u = 0; u < nbSeq; u++) + { litlengthCount[codePtr[u]]++; + } } if (nbSeq >= 2) @@ -91,9 +102,15 @@ uint notificationLevel uint offset1 = seq[0].offBase - 3; uint offset2 = seq[1].offBase - 3; if (offset1 >= 1024) + { offset1 = 0; + } + if (offset2 >= 1024) + { offset2 = 0; + } + repOffsets[offset1] += 3; repOffsets[offset2] += 1; } @@ -106,7 +123,10 @@ private static nuint ZDICT_totalSampleSize(nuint* fileSizes, uint nbFiles) nuint total = 0; uint u; for (u = 0; u < nbFiles; u++) + { total += fileSizes[u]; + } + return total; } @@ -119,7 +139,10 @@ private static void ZDICT_insertSortCount(offsetCount_t* table, uint val, uint c { offsetCount_t tmp; if (table[u - 1].count >= table[u].count) + { break; + } + tmp = table[u - 1]; table[u - 1] = table[u]; table[u] = tmp; @@ -134,7 +157,10 @@ private static void ZDICT_flatLit(uint* countLit) { int u; for (u = 1; u < 256; u++) + { countLit[u] = 2; + } + countLit[0] = 4; countLit[253] = 1; countLit[254] = 1; @@ -191,18 +217,33 @@ uint notificationLevel } for (u = 0; u < 256; u++) + { countLit[u] = 1; + } + for (u = 0; u <= offcodeMax; u++) + { offcodeCount[u] = 1; + } + for (u = 0; u <= 52; u++) + { matchLengthCount[u] = 1; + } + for (u = 0; u <= 35; u++) + { litLengthCount[u] = 1; + } + memset(repOffset, 0, sizeof(uint) * 1024); repOffset[1] = repOffset[4] = repOffset[8] = 1; memset(bestRepOffset, 0, (uint)(sizeof(offsetCount_t) * 4)); if (compressionLevel == 0) + { compressionLevel = 3; + } + @params = ZSTD_getParams(compressionLevel, averageSampleSize, dictBufferSize); esr.dict = ZSTD_createCDict_advanced( dictBuffer, @@ -277,12 +318,17 @@ uint notificationLevel { uint offset; for (offset = 1; offset < 1024; offset++) + { ZDICT_insertSortCount(bestRepOffset, offset, repOffset[offset]); + } } total = 0; for (u = 0; u <= offcodeMax; u++) + { total += offcodeCount[u]; + } + errorCode = FSE_normalizeCount(offcodeNCount, Offlog, offcodeCount, total, offcodeMax, 1); if (ERR_isError(errorCode)) { @@ -293,7 +339,10 @@ uint notificationLevel Offlog = (uint)errorCode; total = 0; for (u = 0; u <= 52; u++) + { total += matchLengthCount[u]; + } + errorCode = FSE_normalizeCount(matchLengthNCount, mlLog, matchLengthCount, total, 52, 1); if (ERR_isError(errorCode)) { @@ -304,7 +353,10 @@ uint notificationLevel mlLog = (uint)errorCode; total = 0; for (u = 0; u <= 35; u++) + { total += litLengthCount[u]; + } + errorCode = FSE_normalizeCount(litLengthNCount, llLog, litLengthCount, total, 35, 1); if (ERR_isError(errorCode)) { @@ -398,7 +450,10 @@ private static uint ZDICT_maxRep(uint* reps) uint maxRep = reps[0]; int r; for (r = 1; r < 3; ++r) + { maxRep = maxRep > reps[r] ? maxRep : reps[r]; + } + return maxRep; } @@ -456,9 +511,15 @@ ZDICT_params_t @params nuint minContentSize = ZDICT_maxRep(repStartValue); nuint paddingSize; if (dictBufferCapacity < dictContentSize) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + if (dictBufferCapacity < 256) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + MEM_writeLE32(header, 0xEC30A437); { ulong randomID = ZSTD_XXH64(customDictContent, dictContentSize, 0); @@ -481,7 +542,10 @@ ZDICT_params_t @params notificationLevel ); if (ZDICT_isError(eSize)) + { return eSize; + } + hSize += eSize; } @@ -548,7 +612,10 @@ ZDICT_params_t @params notificationLevel ); if (ZDICT_isError(eSize)) + { return eSize; + } + hSize += eSize; } @@ -565,11 +632,14 @@ ZDICT_params_t @params } if (hSize + dictContentSize < dictBufferCapacity) + { memmove( (sbyte*)dictBuffer + hSize, (sbyte*)dictBuffer + dictBufferCapacity - dictContentSize, dictContentSize ); + } + return dictBufferCapacity < hSize + dictContentSize ? dictBufferCapacity : hSize + dictContentSize; diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompress.cs index 8198034b7..be97cccb5 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompress.cs @@ -29,7 +29,10 @@ public static nuint ZSTD_compressBound(nuint srcSize) + (srcSize >> 8) + (srcSize < 128 << 10 ? (128 << 10) - srcSize >> 11 : 0); if (r == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); + } + return r; } @@ -51,14 +54,20 @@ private static void ZSTD_initCCtx(ZSTD_CCtx_s* cctx, ZSTD_customMem memManager) public static ZSTD_CCtx_s* ZSTD_createCCtx_advanced(ZSTD_customMem customMem) { if (((customMem.customAlloc == null ? 1 : 0) ^ (customMem.customFree == null ? 1 : 0)) != 0) + { return null; + } + { ZSTD_CCtx_s* cctx = (ZSTD_CCtx_s*)ZSTD_customMalloc( (nuint)sizeof(ZSTD_CCtx_s), customMem ); if (cctx == null) + { return null; + } + ZSTD_initCCtx(cctx, customMem); return cctx; } @@ -90,9 +99,15 @@ private static void ZSTD_initCCtx(ZSTD_CCtx_s* cctx, ZSTD_customMem memManager) ZSTD_cwksp ws; ZSTD_CCtx_s* cctx; if (workspaceSize <= (nuint)sizeof(ZSTD_CCtx_s)) + { return null; + } + if (((nuint)workspace & 7) != 0) + { return null; + } + ZSTD_cwksp_init( &ws, workspace, @@ -101,7 +116,10 @@ private static void ZSTD_initCCtx(ZSTD_CCtx_s* cctx, ZSTD_customMem memManager) ); cctx = (ZSTD_CCtx_s*)ZSTD_cwksp_reserve_object(&ws, (nuint)sizeof(ZSTD_CCtx_s)); if (cctx == null) + { return null; + } + *cctx = new ZSTD_CCtx_s(); ZSTD_cwksp_move(&cctx->workspace, &ws); cctx->staticSize = workspaceSize; @@ -118,7 +136,10 @@ private static void ZSTD_initCCtx(ZSTD_CCtx_s* cctx, ZSTD_customMem memManager) ) ) == 0 ) + { return null; + } + cctx->blockState.prevCBlock = (ZSTD_compressedBlockState_t*)ZSTD_cwksp_reserve_object( &cctx->workspace, (nuint)sizeof(ZSTD_compressedBlockState_t) @@ -173,7 +194,10 @@ private static void ZSTD_freeCCtxContent(ZSTD_CCtx_s* cctx) public static nuint ZSTD_freeCCtx(ZSTD_CCtx_s* cctx) { if (cctx == null) + { return 0; + } + if (cctx->staticSize != 0) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); @@ -183,7 +207,9 @@ public static nuint ZSTD_freeCCtx(ZSTD_CCtx_s* cctx) int cctxInWorkspace = ZSTD_cwksp_owns_buffer(&cctx->workspace, cctx); ZSTD_freeCCtxContent(cctx); if (cctxInWorkspace == 0) + { ZSTD_customFree(cctx, cctx->customMem); + } } return 0; @@ -200,7 +226,10 @@ private static nuint ZSTD_sizeof_mtctx(ZSTD_CCtx_s* cctx) public static nuint ZSTD_sizeof_CCtx(ZSTD_CCtx_s* cctx) { if (cctx == null) + { return 0; + } + return (nuint)(cctx->workspace.workspace == cctx ? 0 : sizeof(ZSTD_CCtx_s)) + ZSTD_cwksp_sizeof(&cctx->workspace) + ZSTD_sizeof_localDict(cctx->localDict) @@ -245,12 +274,21 @@ private static ZSTD_paramSwitch_e ZSTD_resolveRowMatchFinderMode( ) { if (mode != ZSTD_paramSwitch_e.ZSTD_ps_auto) + { return mode; + } + mode = ZSTD_paramSwitch_e.ZSTD_ps_disable; if (ZSTD_rowMatchFinderSupported(cParams->strategy) == 0) + { return mode; + } + if (cParams->windowLog > 14) + { mode = ZSTD_paramSwitch_e.ZSTD_ps_enable; + } + return mode; } @@ -261,7 +299,10 @@ private static ZSTD_paramSwitch_e ZSTD_resolveBlockSplitterMode( ) { if (mode != ZSTD_paramSwitch_e.ZSTD_ps_auto) + { return mode; + } + return cParams->strategy >= ZSTD_strategy.ZSTD_btopt && cParams->windowLog >= 17 ? ZSTD_paramSwitch_e.ZSTD_ps_enable : ZSTD_paramSwitch_e.ZSTD_ps_disable; @@ -293,7 +334,10 @@ private static ZSTD_paramSwitch_e ZSTD_resolveEnableLdm( ) { if (mode != ZSTD_paramSwitch_e.ZSTD_ps_auto) + { return mode; + } + return cParams->strategy >= ZSTD_strategy.ZSTD_btopt && cParams->windowLog >= 27 ? ZSTD_paramSwitch_e.ZSTD_ps_enable : ZSTD_paramSwitch_e.ZSTD_ps_disable; @@ -323,7 +367,10 @@ int cLevel ) { if (value != ZSTD_paramSwitch_e.ZSTD_ps_auto) + { return value; + } + if (cLevel < 10) { return ZSTD_paramSwitch_e.ZSTD_ps_disable; @@ -387,7 +434,10 @@ ZSTD_compressionParameters cParams { ZSTD_CCtx_params_s* @params; if (((customMem.customAlloc == null ? 1 : 0) ^ (customMem.customFree == null ? 1 : 0)) != 0) + { return null; + } + @params = (ZSTD_CCtx_params_s*)ZSTD_customCalloc( (nuint)sizeof(ZSTD_CCtx_params_s), customMem @@ -734,11 +784,20 @@ private static nuint ZSTD_cParam_clampBounds(ZSTD_cParameter cParam, int* value) { ZSTD_bounds bounds = ZSTD_cParam_getBounds(cParam); if (ERR_isError(bounds.error)) + { return bounds.error; + } + if (*value < bounds.lowerBound) + { *value = bounds.lowerBound; + } + if (*value > bounds.upperBound) + { *value = bounds.upperBound; + } + return 0; } @@ -908,66 +967,84 @@ int value } if (value == 0) + { CCtxParams->compressionLevel = 3; + } else + { CCtxParams->compressionLevel = value; + } + if (CCtxParams->compressionLevel >= 0) + { return (nuint)CCtxParams->compressionLevel; + } + return 0; } case ZSTD_cParameter.ZSTD_c_windowLog: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_windowLog, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->cParams.windowLog = (uint)value; return CCtxParams->cParams.windowLog; case ZSTD_cParameter.ZSTD_c_hashLog: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_hashLog, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->cParams.hashLog = (uint)value; return CCtxParams->cParams.hashLog; case ZSTD_cParameter.ZSTD_c_chainLog: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_chainLog, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->cParams.chainLog = (uint)value; return CCtxParams->cParams.chainLog; case ZSTD_cParameter.ZSTD_c_searchLog: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_searchLog, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->cParams.searchLog = (uint)value; return (nuint)value; case ZSTD_cParameter.ZSTD_c_minMatch: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_minMatch, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->cParams.minMatch = (uint)value; return CCtxParams->cParams.minMatch; @@ -981,12 +1058,14 @@ int value return CCtxParams->cParams.targetLength; case ZSTD_cParameter.ZSTD_c_strategy: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_strategy, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->cParams.strategy = (ZSTD_strategy)value; return (nuint)CCtxParams->cParams.strategy; @@ -1045,7 +1124,9 @@ int value return (nuint)CCtxParams->nbWorkers; case ZSTD_cParameter.ZSTD_c_jobSize: if (value != 0 && value < 512 * (1 << 10)) + { value = 512 * (1 << 10); + } { nuint err_code = ZSTD_cParam_clampBounds(param, &value); @@ -1104,28 +1185,33 @@ int value return (nuint)CCtxParams->ldmParams.enableLdm; case ZSTD_cParameter.ZSTD_c_ldmHashLog: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_ldmHashLog, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->ldmParams.hashLog = (uint)value; return CCtxParams->ldmParams.hashLog; case ZSTD_cParameter.ZSTD_c_ldmMinMatch: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_ldmMinMatch, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->ldmParams.minMatchLength = (uint)value; return CCtxParams->ldmParams.minMatchLength; case ZSTD_cParameter.ZSTD_c_ldmBucketSizeLog: if (value != 0) + { if ( ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_ldmBucketSizeLog, value) == 0 @@ -1135,17 +1221,20 @@ int value (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->ldmParams.bucketSizeLog = (uint)value; return CCtxParams->ldmParams.bucketSizeLog; case ZSTD_cParameter.ZSTD_c_ldmHashRateLog: if (value != 0) + { if (ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_ldmHashRateLog, value) == 0) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->ldmParams.hashRateLog = (uint)value; return CCtxParams->ldmParams.hashRateLog; @@ -1168,6 +1257,7 @@ int value return CCtxParams->targetCBlockSize; case ZSTD_cParameter.ZSTD_c_experimentalParam7: if (value != 0) + { if ( ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_experimentalParam7, value) == 0 @@ -1177,6 +1267,7 @@ int value (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } CCtxParams->srcSizeHint = value; return (nuint)CCtxParams->srcSizeHint; @@ -1280,6 +1371,7 @@ int value return (nuint)CCtxParams->enableMatchFinderFallback; case ZSTD_cParameter.ZSTD_c_experimentalParam18: if (value != 0) + { if ( ZSTD_cParam_withinBounds(ZSTD_cParameter.ZSTD_c_experimentalParam18, value) == 0 @@ -1289,6 +1381,7 @@ int value (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_parameter_outOfBound) ); } + } assert(value >= 0); CCtxParams->maxBlockSize = (nuint)value; @@ -1755,7 +1848,10 @@ ZSTD_dictContentType_e dictContentType ZSTD_clearAllDicts(cctx); if (dict == null || dictSize == 0) + { return 0; + } + if (dictLoadMethod == ZSTD_dictLoadMethod_e.ZSTD_dlm_byRef) { cctx->localDict.dict = dict; @@ -2010,57 +2106,85 @@ private static ZSTD_compressionParameters ZSTD_clampCParams(ZSTD_compressionPara { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_windowLog); if ((int)cParams.windowLog < bounds.lowerBound) + { cParams.windowLog = (uint)bounds.lowerBound; + } else if ((int)cParams.windowLog > bounds.upperBound) + { cParams.windowLog = (uint)bounds.upperBound; + } } { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_chainLog); if ((int)cParams.chainLog < bounds.lowerBound) + { cParams.chainLog = (uint)bounds.lowerBound; + } else if ((int)cParams.chainLog > bounds.upperBound) + { cParams.chainLog = (uint)bounds.upperBound; + } } { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_hashLog); if ((int)cParams.hashLog < bounds.lowerBound) + { cParams.hashLog = (uint)bounds.lowerBound; + } else if ((int)cParams.hashLog > bounds.upperBound) + { cParams.hashLog = (uint)bounds.upperBound; + } } { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_searchLog); if ((int)cParams.searchLog < bounds.lowerBound) + { cParams.searchLog = (uint)bounds.lowerBound; + } else if ((int)cParams.searchLog > bounds.upperBound) + { cParams.searchLog = (uint)bounds.upperBound; + } } { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_minMatch); if ((int)cParams.minMatch < bounds.lowerBound) + { cParams.minMatch = (uint)bounds.lowerBound; + } else if ((int)cParams.minMatch > bounds.upperBound) + { cParams.minMatch = (uint)bounds.upperBound; + } } { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_targetLength); if ((int)cParams.targetLength < bounds.lowerBound) + { cParams.targetLength = (uint)bounds.lowerBound; + } else if ((int)cParams.targetLength > bounds.upperBound) + { cParams.targetLength = (uint)bounds.upperBound; + } } { ZSTD_bounds bounds = ZSTD_cParam_getBounds(ZSTD_cParameter.ZSTD_c_strategy); if ((int)cParams.strategy < bounds.lowerBound) + { cParams.strategy = (ZSTD_strategy)bounds.lowerBound; + } else if ((int)cParams.strategy > bounds.upperBound) + { cParams.strategy = (ZSTD_strategy)bounds.upperBound; + } } return cParams; @@ -2136,7 +2260,10 @@ ZSTD_paramSwitch_e useRowMatchFinder break; case ZSTD_CParamMode_e.ZSTD_cpm_createCDict: if (dictSize != 0 && srcSize == unchecked(0UL - 1)) + { srcSize = minSrcSize; + } + break; case ZSTD_CParamMode_e.ZSTD_cpm_attachDict: dictSize = 0; @@ -2152,7 +2279,9 @@ ZSTD_paramSwitch_e useRowMatchFinder const uint hashSizeMin = 1 << 6; uint srcLog = tSize < hashSizeMin ? 6 : ZSTD_highbit32(tSize - 1) + 1; if (cPar.windowLog > srcLog) + { cPar.windowLog = srcLog; + } } if (srcSize != unchecked(0UL - 1)) @@ -2160,13 +2289,21 @@ ZSTD_paramSwitch_e useRowMatchFinder uint dictAndWindowLog = ZSTD_dictAndWindowLog(cPar.windowLog, srcSize, dictSize); uint cycleLog = ZSTD_cycleLog(cPar.chainLog, cPar.strategy); if (cPar.hashLog > dictAndWindowLog + 1) + { cPar.hashLog = dictAndWindowLog + 1; + } + if (cycleLog > dictAndWindowLog) + { cPar.chainLog -= cycleLog - dictAndWindowLog; + } } if (cPar.windowLog < 10) + { cPar.windowLog = 10; + } + if ( mode == ZSTD_CParamMode_e.ZSTD_cpm_createCDict && ZSTD_CDictIndicesAreTagged(&cPar) != 0 @@ -2185,7 +2322,10 @@ ZSTD_paramSwitch_e useRowMatchFinder } if (useRowMatchFinder == ZSTD_paramSwitch_e.ZSTD_ps_auto) + { useRowMatchFinder = ZSTD_paramSwitch_e.ZSTD_ps_enable; + } + if (ZSTD_rowMatchFinderUsed(cPar.strategy, useRowMatchFinder) != 0) { /* Switch to 32-entry rows if searchLog is 5 (or more) */ @@ -2219,7 +2359,10 @@ nuint dictSize { cPar = ZSTD_clampCParams(cPar); if (srcSize == 0) + { srcSize = unchecked(0UL - 1); + } + return ZSTD_adjustCParams_internal( cPar, srcSize, @@ -2235,19 +2378,39 @@ private static void ZSTD_overrideCParams( ) { if (overrides->windowLog != 0) + { cParams->windowLog = overrides->windowLog; + } + if (overrides->hashLog != 0) + { cParams->hashLog = overrides->hashLog; + } + if (overrides->chainLog != 0) + { cParams->chainLog = overrides->chainLog; + } + if (overrides->searchLog != 0) + { cParams->searchLog = overrides->searchLog; + } + if (overrides->minMatch != 0) + { cParams->minMatch = overrides->minMatch; + } + if (overrides->targetLength != 0) + { cParams->targetLength = overrides->targetLength; + } + if (overrides->strategy != default) + { cParams->strategy = overrides->strategy; + } } /* ZSTD_getCParamsFromCCtxParams() : @@ -2276,7 +2439,10 @@ ZSTD_CParamMode_e mode mode ); if (CCtxParams->ldmParams.enableLdm == ZSTD_paramSwitch_e.ZSTD_ps_enable) + { cParams.windowLog = 27; + } + ZSTD_overrideCParams(&cParams, &CCtxParams->cParams); assert(ZSTD_checkCParams(cParams) == 0); return ZSTD_adjustCParams_internal( @@ -2535,7 +2701,9 @@ public static nuint ZSTD_estimateCCtxSize(int compressionLevel) /* Ensure monotonically increasing memory usage as compression level increases */ nuint newMB = ZSTD_estimateCCtxSize_internal(level); if (newMB > memBudget) + { memBudget = newMB; + } } return memBudget; @@ -2648,7 +2816,9 @@ public static nuint ZSTD_estimateCStreamSize(int compressionLevel) { nuint newMB = ZSTD_estimateCStreamSize_internal(level); if (newMB > memBudget) + { memBudget = newMB; + } } return memBudget; @@ -2670,7 +2840,9 @@ public static ZSTD_frameProgression ZSTD_getFrameProgression(ZSTD_CCtx_s* cctx) nuint buffered = cctx->inBuff == null ? 0 : cctx->inBuffPos - cctx->inToCompress; #if DEBUG if (buffered != 0) + { assert(cctx->inBuffPos >= cctx->inToCompress); + } #endif assert(buffered <= 1 << 17); fp.ingested = cctx->consumedSrcSize + buffered; @@ -2715,7 +2887,10 @@ private static void ZSTD_reset_compressedBlockState(ZSTD_compressedBlockState_t* { int i; for (i = 0; i < 3; ++i) + { bs->rep[i] = repStartValue[i]; + } + bs->entropy.huf.repeatMode = HUF_repeat.HUF_repeat_none; bs->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_none; bs->entropy.fse.matchlength_repeatMode = FSE_repeat.FSE_repeat_none; @@ -2977,7 +3152,10 @@ ZSTD_buffered_policy_e zbuff } if (zc->staticSize == 0) + { ZSTD_cwksp_bump_oversized_duration(ws, 0); + } + { int workspaceTooSmall = ZSTD_cwksp_sizeof(ws) < neededSpace ? 1 : 0; int workspaceWasteful = ZSTD_cwksp_check_wasteful(ws, neededSpace); @@ -3059,7 +3237,10 @@ ZSTD_buffered_policy_e zbuff zc->consumedSrcSize = 0; zc->producedCSize = 0; if (pledgedSrcSize == unchecked(0UL - 1)) + { zc->appliedParams.fParams.contentSizeFlag = 0; + } + zc->blockSizeMax = blockSize; ZSTD_XXH64_reset(&zc->xxhState, 0); zc->stage = ZSTD_compressionStage_e.ZSTDcs_init; @@ -3150,7 +3331,10 @@ private static void ZSTD_invalidateRepCodes(ZSTD_CCtx_s* cctx) { int i; for (i = 0; i < 3; i++) + { cctx->blockState.prevCBlock->rep[i] = 0; + } + assert(ZSTD_window_hasExtDict(cctx->blockState.matchState.window) == 0); } @@ -3545,7 +3729,10 @@ ulong pledgedSrcSize }; ZSTD_buffered_policy_e zbuff = srcCCtx->bufferedPolicy; if (pledgedSrcSize == 0) + { pledgedSrcSize = unchecked(0UL - 1); + } + fParams.contentSizeFlag = pledgedSrcSize != unchecked(0UL - 1) ? 1 : 0; return ZSTD_copyCCtx_internal(dstCCtx, srcCCtx, fParams, pledgedSrcSize, zbuff); } @@ -3629,9 +3816,13 @@ uint reducerValue { uint chainSize = (uint)1 << (int)@params->cParams.chainLog; if (@params->cParams.strategy == ZSTD_strategy.ZSTD_btlazy2) + { ZSTD_reduceTable_btlazy2(ms->chainTable, chainSize, reducerValue); + } else + { ZSTD_reduceTable(ms->chainTable, chainSize, reducerValue); + } } if (ms->hashLog3 != 0) @@ -3662,13 +3853,21 @@ private static int ZSTD_seqToCodes(SeqStore_t* seqStorePtr) mlCodeTable[u] = (byte)ZSTD_MLcode(mlv); assert(!(MEM_64bits && ofCode >= (uint)(MEM_32bits ? 25 : 57))); if (MEM_32bits && ofCode >= (uint)(MEM_32bits ? 25 : 57)) + { longOffsets = 1; + } } if (seqStorePtr->longLengthType == ZSTD_longLengthType_e.ZSTD_llt_literalLength) + { llCodeTable[seqStorePtr->longLengthPos] = 35; + } + if (seqStorePtr->longLengthType == ZSTD_longLengthType_e.ZSTD_llt_matchLength) + { mlCodeTable[seqStorePtr->longLengthPos] = 52; + } + return longOffsets; } @@ -3788,7 +3987,10 @@ nuint entropyWkspSize } if (stats.LLtype == (uint)SymbolEncodingType_e.set_compressed) + { stats.lastCountSize = countSize; + } + op += countSize; assert(op <= oend); } @@ -3855,7 +4057,10 @@ nuint entropyWkspSize } if (stats.Offtype == (uint)SymbolEncodingType_e.set_compressed) + { stats.lastCountSize = countSize; + } + op += countSize; assert(op <= oend); } @@ -3917,7 +4122,10 @@ nuint entropyWkspSize } if (stats.MLtype == (uint)SymbolEncodingType_e.set_compressed) + { stats.lastCountSize = countSize; + } + op += countSize; assert(op <= oend); } @@ -4112,7 +4320,10 @@ int bmi2 bmi2 ); if (cSize == 0) + { return 0; + } + if ( cSize == unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)) && blockSize <= dstCapacity @@ -4132,7 +4343,9 @@ int bmi2 { nuint maxCSize = blockSize - ZSTD_minGain(blockSize, cctxParams->cParams.strategy); if (cSize >= maxCSize) + { return 0; + } } assert(cSize < 1 << 17); @@ -4406,12 +4619,16 @@ private static nuint ZSTD_buildSeqStore(ZSTD_CCtx_s* zc, void* src, nuint srcSiz uint curr = (uint)(istart - @base); #if DEBUG if (sizeof(nint) == 8) + { assert(istart - @base < unchecked((nint)(uint)-1)); + } #endif if (curr > ms->nextToUpdate + 384) + { ms->nextToUpdate = curr - (192 < curr - ms->nextToUpdate - 384 ? 192 : curr - ms->nextToUpdate - 384); + } } { @@ -4420,7 +4637,9 @@ private static nuint ZSTD_buildSeqStore(ZSTD_CCtx_s* zc, void* src, nuint srcSiz { int i; for (i = 0; i < 3; ++i) + { zc->blockState.nextCBlock->rep[i] = zc->blockState.prevCBlock->rep[i]; + } } if (zc->externSeqStore.pos < zc->externSeqStore.size) @@ -4862,7 +5081,10 @@ private static int ZSTD_isRLE(byte* src, nuint length) nuint prefixLength = length & unrollMask; nuint i; if (length == 1) + { return 1; + } + if (prefixLength != 0 && ZSTD_count(ip + 1, ip, ip + prefixLength) != prefixLength - 1) { return 0; @@ -5222,9 +5444,13 @@ int writeEntropy ); uint singleStream = litSize < 256 ? 1U : 0U; if (hufMetadata->hType == SymbolEncodingType_e.set_basic) + { return litSize; + } else if (hufMetadata->hType == SymbolEncodingType_e.set_rle) + { return 1; + } else if ( hufMetadata->hType == SymbolEncodingType_e.set_compressed || hufMetadata->hType == SymbolEncodingType_e.set_repeat @@ -5239,7 +5465,10 @@ int writeEntropy wkspSize ); if (ERR_isError(largest)) + { return litSize; + } + { nuint cLitSizeEstimate = HUF_estimateCompressedSize( &huf->CTable.e0, @@ -5247,9 +5476,15 @@ int writeEntropy maxSymbolValue ); if (writeEntropy != 0) + { cLitSizeEstimate += hufMetadata->hufDesSize; + } + if (singleStream == 0) + { cLitSizeEstimate += 6; + } + return cLitSizeEstimate + literalSectionHeaderSize; } } @@ -5310,9 +5545,14 @@ nuint wkspSize while (ctp < ctEnd) { if (additionalBits != null) + { cSymbolTypeSizeEstimateInBits += additionalBits[*ctp]; + } else + { cSymbolTypeSizeEstimateInBits += *ctp; + } + ctp++; } @@ -5377,7 +5617,10 @@ int writeEntropy wkspSize ); if (writeEntropy != 0) + { cSeqSizeEstimate += fseMetadata->fseTablesSize; + } + return cSeqSizeEstimate + sequencesSectionHeaderSize; } @@ -5647,12 +5890,15 @@ uint isPartition /* In case of an RLE or raw block, the simulated decompression repcode history must be reset */ repcodes_s dRepOriginal = *dRep; if (isPartition != 0) + { ZSTD_seqStore_resolveOffCodes( dRep, cRep, seqStore, (uint)(seqStore->sequences - seqStore->sequencesStart) ); + } + if (dstCapacity < ZSTD_blockHeaderSize) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); @@ -5741,7 +5987,10 @@ uint isPartition if ( zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat.FSE_repeat_valid ) + { zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_check; + } + return cSize; } @@ -5989,8 +6238,11 @@ uint lastBlock zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat.FSE_repeat_valid ) + { zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_check; + } + if (zc->seqCollector.collectSequences != 0) { return unchecked( @@ -6124,7 +6376,10 @@ uint frame if ( zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat.FSE_repeat_valid ) + { zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_check; + } + return cSize; } @@ -6221,7 +6476,10 @@ uint lastBlock if ( zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat.FSE_repeat_valid ) + { zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_check; + } + return cSize; } @@ -6251,9 +6509,14 @@ private static void ZSTD_overflowCorrectIfNeeded( ZSTD_reduceIndex(ms, @params, correction); ZSTD_cwksp_mark_tables_clean(ws); if (ms->nextToUpdate < correction) + { ms->nextToUpdate = 0; + } else + { ms->nextToUpdate -= correction; + } + ms->loadedDictEnd = 0; ms->dictMatchState = null; } @@ -6285,14 +6548,20 @@ long savings ) { if (srcSize < 128 * (1 << 10) || blockSizeMax < 128 * (1 << 10)) + { return srcSize < blockSizeMax ? srcSize : blockSizeMax; + } + if (savings < 3) { return 128 * (1 << 10); } if (splitLevel == 1) + { return 128 * (1 << 10); + } + if (splitLevel == 0) { assert(ZSTD_strategy.ZSTD_fast <= strat && strat <= ZSTD_strategy.ZSTD_btultra2); @@ -6338,7 +6607,10 @@ uint lastFrameChunk long savings = (long)cctx->consumedSrcSize - (long)cctx->producedCSize; assert(cctx->appliedParams.cParams.windowLog <= (uint)(sizeof(nuint) == 4 ? 30 : 31)); if (cctx->appliedParams.fParams.checksumFlag != 0 && srcSize != 0) + { ZSTD_XXH64_update(&cctx->xxhState, src, srcSize); + } + while (remaining != 0) { ZSTD_MatchState_t* ms = &cctx->blockState.matchState; @@ -6380,7 +6652,10 @@ uint lastFrameChunk &ms->dictMatchState ); if (ms->nextToUpdate < ms->window.lowLimit) + { ms->nextToUpdate = ms->window.lowLimit; + } + { nuint cSize; if (ZSTD_useTargetCBlockSize(&cctx->appliedParams) != 0) @@ -6480,7 +6755,10 @@ uint lastFrameChunk } if (lastFrameChunk != 0 && op > ostart) + { cctx->stage = ZSTD_compressionStage_e.ZSTDcs_ending; + } + return (nuint)(op - ostart); } @@ -6529,7 +6807,10 @@ uint dictID op[pos++] = frameHeaderDescriptionByte; if (singleSegment == 0) + { op[pos++] = windowLogByte; + } + switch (dictIDSizeCode) { default: @@ -6558,7 +6839,10 @@ uint dictID goto case 0; case 0: if (singleSegment != 0) + { op[pos++] = (byte)pledgedSrcSize; + } + break; case 1: MEM_writeLE16(op + pos, (ushort)(pledgedSrcSize - 256)); @@ -6697,7 +6981,10 @@ uint lastFrameChunk } if (srcSize == 0) + { return fhSize; + } + if (ZSTD_window_update(&ms->window, src, srcSize, ms->forceNonContiguous) == 0) { ms->forceNonContiguous = 0; @@ -6875,7 +7162,9 @@ ZSTD_tableFillPurpose_e tfp assert(ZSTD_window_isEmpty(ms->window) != 0); #if DEBUG if (loadLdmDict != 0) + { assert(ZSTD_window_isEmpty(ls->window) != 0); + } #endif } @@ -6913,7 +7202,10 @@ ZSTD_tableFillPurpose_e tfp ms->loadedDictEnd = @params->forceWindow != 0 ? 0 : (uint)(iend - ms->window.@base); ms->forceNonContiguous = @params->deterministicRefPrefix; if (srcSize <= 8) + { return 0; + } + ZSTD_overflowCorrectIfNeeded(ms, ws, @params, ip, iend); switch (@params->cParams.strategy) { @@ -7021,7 +7313,10 @@ nuint dictSize &hasZeroWeights ); if (hasZeroWeights == 0 && maxSymbolValue == 255) + { bs->entropy.huf.repeatMode = HUF_repeat.HUF_repeat_valid; + } + if (ERR_isError(hufHeaderSize)) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dictionary_corrupted)); @@ -7295,7 +7590,10 @@ private static nuint ZSTD_compress_insertDictionary( ZSTD_reset_compressedBlockState(bs); if (dictContentType == ZSTD_dictContentType_e.ZSTD_dct_rawContent) + { return ZSTD_loadDictionaryContent(ms, ls, ws, @params, dict, dictSize, dtlm, tfp); + } + if (MEM_readLE32(dict) != 0xEC30A437) { if (dictContentType == ZSTD_dictContentType_e.ZSTD_dct_auto) @@ -7852,7 +8150,10 @@ public static nuint ZSTD_estimateCDictSize(nuint dictSize, int compressionLevel) public static nuint ZSTD_sizeof_CDict(ZSTD_CDict_s* cdict) { if (cdict == null) + { return 0; + } + return (nuint)(cdict->workspace.workspace == cdict ? 0 : sizeof(ZSTD_CDict_s)) + ZSTD_cwksp_sizeof(&cdict->workspace); } @@ -7958,7 +8259,10 @@ ZSTD_customMem customMem ) { if (((customMem.customAlloc == null ? 1 : 0) ^ (customMem.customFree == null ? 1 : 0)) != 0) + { return null; + } + { nuint workspaceSize = ZSTD_cwksp_alloc_size((nuint)sizeof(ZSTD_CDict_s)) @@ -8034,7 +8338,10 @@ ZSTD_customMem customMem ZSTD_compressionParameters cParams; ZSTD_CDict_s* cdict; if (((customMem.customAlloc == null ? 1 : 0) ^ (customMem.customFree == null ? 1 : 0)) != 0) + { return null; + } + if (cctxParams.enableDedicatedDictSearch != 0) { cParams = ZSTD_dedicatedDictSearch_getCParams(cctxParams.compressionLevel, dictSize); @@ -8124,7 +8431,10 @@ ZSTD_customMem customMem ZSTD_defaultCMem ); if (cdict != null) + { cdict->compressionLevel = compressionLevel == 0 ? 3 : compressionLevel; + } + return cdict; } @@ -8155,7 +8465,10 @@ int compressionLevel ZSTD_defaultCMem ); if (cdict != null) + { cdict->compressionLevel = compressionLevel == 0 ? 3 : compressionLevel; + } + return cdict; } @@ -8165,7 +8478,10 @@ int compressionLevel public static nuint ZSTD_freeCDict(ZSTD_CDict_s* cdict) { if (cdict == null) + { return 0; + } + { ZSTD_customMem cMem = cdict->customMem; int cdictInWorkspace = ZSTD_cwksp_owns_buffer(&cdict->workspace, cdict); @@ -8220,7 +8536,10 @@ ZSTD_compressionParameters cParams ZSTD_CDict_s* cdict; ZSTD_CCtx_params_s @params; if (((nuint)workspace & 7) != 0) + { return null; + } + { ZSTD_cwksp ws; ZSTD_cwksp_init( @@ -8231,12 +8550,18 @@ ZSTD_compressionParameters cParams ); cdict = (ZSTD_CDict_s*)ZSTD_cwksp_reserve_object(&ws, (nuint)sizeof(ZSTD_CDict_s)); if (cdict == null) + { return null; + } + ZSTD_cwksp_move(&cdict->workspace, &ws); } if (workspaceSize < neededSize) + { return null; + } + ZSTD_CCtxParams_init(&@params, 0); @params.cParams = cParams; @params.useRowMatchFinder = useRowMatchFinder; @@ -8254,7 +8579,10 @@ ZSTD_compressionParameters cParams ) ) ) + { return null; + } + return cdict; } @@ -8273,7 +8601,10 @@ private static ZSTD_compressionParameters ZSTD_getCParamsFromCDict(ZSTD_CDict_s* public static uint ZSTD_getDictID_fromCDict(ZSTD_CDict_s* cdict) { if (cdict == null) + { return 0; + } + return cdict->dictID; } @@ -8490,9 +8821,13 @@ ulong pledgedSrcSize ) { if (cdict != null && ZSTD_shouldAttachDict(cdict, @params, pledgedSrcSize) != 0) + { return ZSTD_CParamMode_e.ZSTD_cpm_attachDict; + } else + { return ZSTD_CParamMode_e.ZSTD_cpm_noAttachDict; + } } /* ZSTD_resetCStream(): @@ -8852,7 +9187,10 @@ private static nuint ZSTD_nextInputSizeHint(ZSTD_CCtx_s* cctx) { nuint hintInSize = cctx->inBuffTarget - cctx->inBuffPos; if (hintInSize == 0) + { hintInSize = cctx->blockSizeMax; + } + return hintInSize; } } @@ -8882,7 +9220,10 @@ ZSTD_EndDirective flushMode assert(input->pos >= zcs->stableIn_notConsumed); input->pos -= zcs->stableIn_notConsumed; if (ip != null) + { ip -= zcs->stableIn_notConsumed; + } + zcs->stableIn_notConsumed = 0; } @@ -8904,12 +9245,16 @@ ZSTD_EndDirective flushMode #if DEBUG if (input->src == null) + { assert(input->size == 0); + } #endif assert(input->pos <= input->size); #if DEBUG if (output->dst == null) + { assert(output->size == 0); + } #endif assert(output->pos <= output->size); assert((uint)flushMode <= (uint)ZSTD_EndDirective.ZSTD_e_end); @@ -8964,7 +9309,10 @@ ZSTD_EndDirective flushMode ); zcs->inBuffPos += loaded; if (ip != null) + { ip += loaded; + } + if ( flushMode == ZSTD_EndDirective.ZSTD_e_continue && zcs->inBuffPos < zcs->inBuffTarget @@ -9020,7 +9368,9 @@ ZSTD_EndDirective flushMode oSize >= ZSTD_compressBound(iSize) || zcs->appliedParams.outBufferMode == ZSTD_bufferMode_e.ZSTD_bm_stable ) + { cDst = op; + } else { cDst = zcs->outBuff; @@ -9065,7 +9415,9 @@ ZSTD_EndDirective flushMode #if DEBUG if (lastBlock == 0) + { assert(zcs->inBuffTarget <= zcs->inBuffSize); + } #endif zcs->inToCompress = zcs->inBuffPos; } @@ -9080,7 +9432,10 @@ ZSTD_EndDirective flushMode ? ZSTD_compressEnd_public(zcs, cDst, oSize, ip, iSize) : ZSTD_compressContinue_public(zcs, cDst, oSize, ip, iSize); if (ip != null) + { ip += iSize; + } + { nuint err_code = cSize; if (ERR_isError(err_code)) @@ -9092,7 +9447,9 @@ ZSTD_EndDirective flushMode zcs->frameEnded = lastBlock; #if DEBUG if (lastBlock != 0) + { assert(ip == iend); + } #endif } @@ -9126,7 +9483,10 @@ ZSTD_EndDirective flushMode toFlush ); if (flushed != 0) + { op += flushed; + } + zcs->outBuffFlushedSize += flushed; if (toFlush != flushed) { @@ -9156,7 +9516,10 @@ ZSTD_EndDirective flushMode input->pos = (nuint)(ip - istart); output->pos = (nuint)(op - ostart); if (zcs->frameEnded != 0) + { return 0; + } + return ZSTD_nextInputSizeHint(zcs); } @@ -9233,18 +9596,22 @@ ZSTD_EndDirective endOp { ZSTD_inBuffer_s expect = cctx->expectedInBuffer; if (expect.src != input->src || expect.pos != input->pos) + { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_stabilityCondition_notRespected) ); + } } if (cctx->appliedParams.outBufferMode == ZSTD_bufferMode_e.ZSTD_bm_stable) { nuint outBufferSize = output->size - output->pos; if (cctx->expectedOutBufferSize != outBufferSize) + { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_stabilityCondition_notRespected) ); + } } return 0; @@ -9280,7 +9647,10 @@ nuint inSize } if (endOp == ZSTD_EndDirective.ZSTD_e_end) + { cctx->pledgedSrcSizePlusOne = inSize + 1; + } + { nuint dictSize = prefixDict.dict != null ? prefixDict.dictSize @@ -9519,7 +9889,10 @@ ZSTD_EndDirective endOp if (ERR_isError(flushMin) || endOp == ZSTD_EndDirective.ZSTD_e_end && flushMin == 0) { if (flushMin == 0) + { ZSTD_CCtx_trace(cctx, 0); + } + ZSTD_CCtx_reset(cctx, ZSTD_ResetDirective.ZSTD_reset_session_only); } @@ -9539,7 +9912,9 @@ ZSTD_EndDirective endOp || input->pos == input->size || output->pos == output->size ) + { break; + } } else { @@ -9548,7 +9923,9 @@ ZSTD_EndDirective endOp || endOp == ZSTD_EndDirective.ZSTD_e_end ); if (flushMin == 0 || output->pos == output->size) + { break; + } } } @@ -10018,7 +10395,9 @@ ZSTD_paramSwitch_e externalRepSearch ZSTD_storeSeq(&cctx->seqStore, litLength, ip, iend, offBase, matchLength); ip += matchLength + litLength; if (finalMatchSplit == 0) + { idx++; + } } assert( @@ -10091,9 +10470,12 @@ ZSTD_SequencePosition seqPos if (end != 0) { if (inSeqs[spos].matchLength != 0) + { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_externalSequences_invalid) ); + } + break; } @@ -10101,7 +10483,10 @@ ZSTD_SequencePosition seqPos } if (end == 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_externalSequences_invalid)); + } + return blockSize; } @@ -10131,13 +10516,19 @@ ZSTD_SequencePosition seqPos } if (explicitBlockSize > blockSize) + { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_externalSequences_invalid) ); + } + if (explicitBlockSize > remaining) + { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_externalSequences_invalid) ); + } + return explicitBlockSize; } } @@ -10316,8 +10707,11 @@ nuint srcSize cctx->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat.FSE_repeat_valid ) + { cctx->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_check; + } + cBlockHeader = lastBlock + ((uint)blockType_e.bt_compressed << 1) @@ -10727,7 +11121,10 @@ nuint srcSize } if (compressedSeqsSize > cctx->blockSizeMax) + { compressedSeqsSize = 0; + } + litSize -= block.litSize; literals = (sbyte*)literals + block.litSize; if (compressedSeqsSize == 0) @@ -10745,8 +11142,11 @@ nuint srcSize cctx->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat.FSE_repeat_valid ) + { cctx->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat.FSE_repeat_check; + } + cBlockHeader = lastBlock + ((uint)blockType_e.bt_compressed << 1) @@ -10927,7 +11327,10 @@ public static nuint ZSTD_endStream(ZSTD_CCtx_s* zcs, ZSTD_outBuffer_s* output) } if (zcs->appliedParams.nbWorkers > 0) + { return remainingToFlush; + } + { nuint lastBlockSize = (nuint)(zcs->frameEnded != 0 ? 0 : 3); nuint checksumSize = (nuint)( @@ -11074,13 +11477,22 @@ ZSTD_CParamMode_e mode ); int row; if (compressionLevel == 0) + { row = 3; + } else if (compressionLevel < 0) + { row = 0; + } else if (compressionLevel > 22) + { row = 22; + } else + { row = compressionLevel; + } + { ZSTD_compressionParameters cp = ZSTD_defaultCParameters[tableID][row]; if (compressionLevel < 0) @@ -11110,7 +11522,10 @@ nuint dictSize ) { if (srcSizeHint == 0) + { srcSizeHint = unchecked(0UL - 1); + } + return ZSTD_getCParams_internal( compressionLevel, srcSizeHint, @@ -11153,7 +11568,10 @@ nuint dictSize ) { if (srcSizeHint == 0) + { srcSizeHint = unchecked(0UL - 1); + } + return ZSTD_getParams_internal( compressionLevel, srcSizeHint, diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressInternal.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressInternal.cs index 2e836fb16..dac7bb52c 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressInternal.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressInternal.cs @@ -486,11 +486,20 @@ private static int ZSTD_cParam_withinBounds(ZSTD_cParameter cParam, int value) { ZSTD_bounds bounds = ZSTD_cParam_getBounds(cParam); if (ERR_isError(bounds.error)) + { return 0; + } + if (value < bounds.lowerBound) + { return 0; + } + if (value > bounds.upperBound) + { return 0; + } + return 1; } @@ -596,7 +605,9 @@ private static void ZSTD_safecopyLiterals(byte* op, byte* ip, byte* iend, byte* } while (ip < iend) + { *op++ = *ip++; + } } /*! ZSTD_storeSeqOnly() : @@ -743,7 +754,9 @@ private static nuint ZSTD_count(byte* pIn, byte* pMatch, byte* pInLimit) { nuint diff = MEM_readST(pMatch) ^ MEM_readST(pIn); if (diff != 0) + { return ZSTD_NbCommonBytes(diff); + } } pIn += sizeof(nuint); @@ -776,7 +789,10 @@ private static nuint ZSTD_count(byte* pIn, byte* pMatch, byte* pInLimit) } if (pIn < pInLimit && *pMatch == *pIn) + { pIn++; + } + return (nuint)(pIn - pStart); } @@ -796,7 +812,10 @@ private static nuint ZSTD_count_2segments( byte* vEnd = ip + (mEnd - match) < iEnd ? ip + (mEnd - match) : iEnd; nuint matchLength = ZSTD_count(ip, match, vEnd); if (match + matchLength != mEnd) + { return matchLength; + } + return matchLength + ZSTD_count(ip + matchLength, iStart, iEnd); } @@ -931,13 +950,25 @@ private static nuint ZSTD_hashPtr(void* p, uint hBits, uint mls) { assert(hBits <= 32); if (mls == 5) + { return ZSTD_hash5Ptr(p, hBits); + } + if (mls == 6) + { return ZSTD_hash6Ptr(p, hBits); + } + if (mls == 7) + { return ZSTD_hash7Ptr(p, hBits); + } + if (mls == 8) + { return ZSTD_hash8Ptr(p, hBits); + } + return ZSTD_hash4Ptr(p, hBits); } @@ -946,13 +977,25 @@ private static nuint ZSTD_hashPtrSalted(void* p, uint hBits, uint mls, ulong has { assert(hBits <= 32); if (mls == 5) + { return ZSTD_hash5PtrS(p, hBits, hashSalt); + } + if (mls == 6) + { return ZSTD_hash6PtrS(p, hBits, hashSalt); + } + if (mls == 7) + { return ZSTD_hash7PtrS(p, hBits, hashSalt); + } + if (mls == 8) + { return ZSTD_hash8PtrS(p, hBits, hashSalt); + } + return ZSTD_hash4PtrS(p, hBits, (uint)hashSalt); } @@ -965,7 +1008,10 @@ private static ulong ZSTD_ipow(ulong @base, ulong exponent) while (exponent != 0) { if ((exponent & 1) != 0) + { power *= @base; + } + exponent >>= 1; @base *= @base; } @@ -1250,16 +1296,24 @@ private static void ZSTD_window_enforceMaxDist( { uint newLowLimit = blockEndIdx - maxDist; if (window->lowLimit < newLowLimit) + { window->lowLimit = newLowLimit; + } + if (window->dictLimit < window->lowLimit) { window->dictLimit = window->lowLimit; } if (loadedDictEndPtr != null) + { *loadedDictEndPtr = 0; + } + if (dictMatchStatePtr != null) + { *dictMatchStatePtr = null; + } } } @@ -1336,7 +1390,10 @@ int forceNonContiguous byte* ip = (byte*)src; uint contiguous = 1; if (srcSize == 0) + { return contiguous; + } + assert(window->@base != null); assert(window->dictBase != null); if (src != window->nextSrc || forceNonContiguous != 0) @@ -1349,7 +1406,10 @@ int forceNonContiguous window->dictBase = window->@base; window->@base = ip - distanceFromBase; if (window->dictLimit - window->lowLimit < 8) + { window->lowLimit = window->dictLimit; + } + contiguous = 0; } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressLiterals.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressLiterals.cs index a4f92ab35..8f203faa0 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressLiterals.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressLiterals.cs @@ -57,7 +57,9 @@ private static int allBytesIdentical(void* src, nuint srcSize) for (p = 1; p < srcSize; p++) { if (((byte*)src)[p] != b) + { return 0; + } } return 1; @@ -150,9 +152,15 @@ int bmi2 nuint cLitSize; memcpy(nextHuf, prevHuf, (uint)sizeof(ZSTD_hufCTables_t)); if (disableLiteralCompression != 0) + { return ZSTD_noCompressLiterals(dst, dstCapacity, src, srcSize); + } + if (srcSize < ZSTD_minLiteralsToCompress(strategy, prevHuf->repeatMode)) + { return ZSTD_noCompressLiterals(dst, dstCapacity, src, srcSize); + } + if (dstCapacity < lhSize + 1) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); @@ -180,7 +188,10 @@ int bmi2 ); void* huf_compress; if (repeat == HUF_repeat.HUF_repeat_valid && lhSize == 3) + { singleStream = 1; + } + huf_compress = singleStream != 0 ? (delegate* managed< @@ -270,7 +281,9 @@ int bmi2 case 3: #if DEBUG if (singleStream == 0) + { assert(srcSize >= 6); + } #endif { diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSequences.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSequences.cs index e0fd5eee0..d9e010896 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSequences.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSequences.cs @@ -594,7 +594,10 @@ private static nuint ZSTD_entropyCost(uint* count, uint max, nuint total) { uint norm = (uint)(256 * count[s] / total); if (count[s] != 0 && norm == 0) + { norm = 1; + } + assert(count[s] < total); cost += count[s] * kInverseProbabilityLog256[norm]; } @@ -624,7 +627,10 @@ private static nuint ZSTD_fseBitCost(uint* ctable, uint* count, uint max) uint badCost = tableLog + 1 << (int)kAccuracyLog; uint bitCost = FSE_bitCost(cstate.symbolTT, tableLog, s, kAccuracyLog); if (count[s] == 0) + { continue; + } + if (bitCost >= badCost) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_GENERIC)); @@ -925,12 +931,15 @@ int longOffsets LL_bits[llCodeTable[nbSeq - 1]] ); if (MEM_32bits) + { BIT_flushBits( ref blockStream_bitContainer, ref blockStream_bitPos, ref blockStream_ptr, blockStream_endPtr ); + } + BIT_addBits( ref blockStream_bitContainer, ref blockStream_bitPos, @@ -938,12 +947,15 @@ int longOffsets ML_bits[mlCodeTable[nbSeq - 1]] ); if (MEM_32bits) + { BIT_flushBits( ref blockStream_bitContainer, ref blockStream_bitPos, ref blockStream_ptr, blockStream_endPtr ); + } + if (longOffsets != 0) { uint ofBits = ofCodeTable[nbSeq - 1]; @@ -1016,12 +1028,15 @@ int longOffsets mlCode ); if (MEM_32bits) + { BIT_flushBits( ref blockStream_bitContainer, ref blockStream_bitPos, ref blockStream_ptr, blockStream_endPtr ); + } + FSE_encodeSymbol( ref blockStream_bitContainer, ref blockStream_bitPos, @@ -1029,12 +1044,15 @@ int longOffsets llCode ); if (MEM_32bits || ofBits + mlBits + llBits >= 64 - 7 - (9 + 9 + 8)) + { BIT_flushBits( ref blockStream_bitContainer, ref blockStream_bitPos, ref blockStream_ptr, blockStream_endPtr ); + } + BIT_addBits( ref blockStream_bitContainer, ref blockStream_bitPos, @@ -1042,12 +1060,15 @@ int longOffsets llBits ); if (MEM_32bits && llBits + mlBits > 24) + { BIT_flushBits( ref blockStream_bitContainer, ref blockStream_bitPos, ref blockStream_ptr, blockStream_endPtr ); + } + BIT_addBits( ref blockStream_bitContainer, ref blockStream_bitPos, @@ -1055,12 +1076,15 @@ int longOffsets mlBits ); if (MEM_32bits || ofBits + mlBits + llBits > 56) + { BIT_flushBits( ref blockStream_bitContainer, ref blockStream_bitPos, ref blockStream_ptr, blockStream_endPtr ); + } + if (longOffsets != 0) { uint extraBits = diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSuperblock.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSuperblock.cs index 8a79453b3..99364ad73 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSuperblock.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCompressSuperblock.cs @@ -170,9 +170,14 @@ int lastSubBlock } if (lastSubBlock == 0) + { assert(litLengthSum == litSize); + } else + { assert(litLengthSum <= litSize); + } + return matchLengthSum + litSize; } @@ -214,7 +219,9 @@ private static nuint ZSTD_compressSubBlock_sequences( } if (nbSeq < 128) + { *op++ = (byte)nbSeq; + } else if (nbSeq < 0x7F00) { op[0] = (byte)((nbSeq >> 8) + 0x80); @@ -342,7 +349,10 @@ uint lastBlock } if (cLitSize == 0) + { return 0; + } + op += cLitSize; } @@ -371,7 +381,10 @@ uint lastBlock } if (cSeqSize == 0) + { return 0; + } + op += cSeqSize; } @@ -400,9 +413,13 @@ int writeEntropy /* Use hard coded size of 3 bytes */ nuint literalSectionHeaderSize = 3; if (hufMetadata->hType == SymbolEncodingType_e.set_basic) + { return litSize; + } else if (hufMetadata->hType == SymbolEncodingType_e.set_rle) + { return 1; + } else if ( hufMetadata->hType == SymbolEncodingType_e.set_compressed || hufMetadata->hType == SymbolEncodingType_e.set_repeat @@ -417,7 +434,10 @@ int writeEntropy wkspSize ); if (ERR_isError(largest)) + { return litSize; + } + { nuint cLitSizeEstimate = HUF_estimateCompressedSize( &huf->CTable.e0, @@ -425,7 +445,10 @@ int writeEntropy maxSymbolValue ); if (writeEntropy != 0) + { cLitSizeEstimate += hufMetadata->hufDesSize; + } + return cLitSizeEstimate + literalSectionHeaderSize; } } @@ -476,13 +499,21 @@ nuint wkspSize } if (ERR_isError(cSymbolTypeSizeEstimateInBits)) + { return nbSeq * 10; + } + while (ctp < ctEnd) { if (additionalBits != null) + { cSymbolTypeSizeEstimateInBits += additionalBits[*ctp]; + } else + { cSymbolTypeSizeEstimateInBits += *ctp; + } + ctp++; } @@ -505,7 +536,10 @@ int writeEntropy const nuint sequencesSectionHeaderSize = 3; nuint cSeqSizeEstimate = 0; if (nbSeq == 0) + { return sequencesSectionHeaderSize; + } + cSeqSizeEstimate += ZSTD_estimateSubBlockSize_symbolType( fseMetadata->ofType, ofCodeTable, @@ -546,7 +580,10 @@ int writeEntropy wkspSize ); if (writeEntropy != 0) + { cSeqSizeEstimate += fseMetadata->fseTablesSize; + } + return cSeqSizeEstimate + sequencesSectionHeaderSize; } @@ -596,17 +633,26 @@ private static int ZSTD_needSequenceEntropyTables(ZSTD_fseCTablesMetadata_t* fse fseMetadata->llType == SymbolEncodingType_e.set_compressed || fseMetadata->llType == SymbolEncodingType_e.set_rle ) + { return 1; + } + if ( fseMetadata->mlType == SymbolEncodingType_e.set_compressed || fseMetadata->mlType == SymbolEncodingType_e.set_rle ) + { return 1; + } + if ( fseMetadata->ofType == SymbolEncodingType_e.set_compressed || fseMetadata->ofType == SymbolEncodingType_e.set_rle ) + { return 1; + } + return 0; } @@ -641,7 +687,10 @@ int firstSubBlock budget += headerSize; budget += sp[0].litLength * avgLitCost + avgSeqCost; if (budget > targetBudget) + { return 1; + } + inSize = (nuint)(sp[0].litLength + (sp[0].mlBase + 3)); for (n = 1; n < nbSeqs; n++) { @@ -649,7 +698,9 @@ int firstSubBlock budget += currentCost; inSize += (nuint)(sp[n].litLength + (sp[n].mlBase + 3)); if (budget > targetBudget && budget < inSize * 256) + { break; + } } return n; @@ -730,7 +781,10 @@ nuint wkspSize blockBudgetSupp = 0; avgBlockBudget = ebs.estBlockSize * 256 / nbSubBlocks; if (ebs.estBlockSize > srcSize) + { return 0; + } + assert(nbSubBlocks > 0); for (n = 0; n < nbSubBlocks - 1; n++) { @@ -745,7 +799,10 @@ nuint wkspSize ); assert(seqCount <= (nuint)(send - sp)); if (sp + seqCount == send) + { break; + } + assert(seqCount > 0); { int litEntropyWritten = 0; diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCwksp.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCwksp.cs index 236c94d46..c11759976 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCwksp.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdCwksp.cs @@ -47,7 +47,10 @@ private static nuint ZSTD_cwksp_align(nuint size, nuint align) private static nuint ZSTD_cwksp_alloc_size(nuint size) { if (size == 0) + { return 0; + } + return size; } @@ -360,9 +363,15 @@ nuint alignment nuint surplus = alignment > (nuint)sizeof(void*) ? alignment - (nuint)sizeof(void*) : 0; void* start = ZSTD_cwksp_reserve_object(ws, byteSize + surplus); if (start == null) + { return null; + } + if (surplus == 0) + { return start; + } + assert(ZSTD_isPower2(alignment) != 0); return (void*)((nuint)start + surplus & ~mask); } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDdict.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDdict.cs index ce79c0f16..5166e40cd 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDdict.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDdict.cs @@ -62,11 +62,17 @@ ZSTD_dictContentType_e dictContentType ddict->dictID = 0; ddict->entropyPresent = 0; if (dictContentType == ZSTD_dictContentType_e.ZSTD_dct_rawContent) + { return 0; + } + if (ddict->dictSize < 8) { if (dictContentType == ZSTD_dictContentType_e.ZSTD_dct_fullDict) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dictionary_corrupted)); + } + return 0; } @@ -75,7 +81,10 @@ ZSTD_dictContentType_e dictContentType if (magic != 0xEC30A437) { if (dictContentType == ZSTD_dictContentType_e.ZSTD_dct_fullDict) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dictionary_corrupted)); + } + return 0; } } @@ -103,7 +112,9 @@ ZSTD_dictContentType_e dictContentType ddict->dictBuffer = null; ddict->dictContent = dict; if (dict == null) + { dictSize = 0; + } } else { @@ -111,7 +122,10 @@ ZSTD_dictContentType_e dictContentType ddict->dictBuffer = internalBuffer; ddict->dictContent = internalBuffer; if (internalBuffer == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + memcpy(internalBuffer, dict, (uint)dictSize); } @@ -138,14 +152,20 @@ ZSTD_customMem customMem ) { if (((customMem.customAlloc == null ? 1 : 0) ^ (customMem.customFree == null ? 1 : 0)) != 0) + { return null; + } + { ZSTD_DDict_s* ddict = (ZSTD_DDict_s*)ZSTD_customMalloc( (nuint)sizeof(ZSTD_DDict_s), customMem ); if (ddict == null) + { return null; + } + ddict->cMem = customMem; { nuint initResult = ZSTD_initDDict_internal( @@ -224,9 +244,15 @@ ZSTD_dictContentType_e dictContentType assert(sBuffer != null); assert(dict != null); if (((nuint)sBuffer & 7) != 0) + { return null; + } + if (sBufferSize < neededSpace) + { return null; + } + if (dictLoadMethod == ZSTD_dictLoadMethod_e.ZSTD_dlm_byCopy) { memcpy(ddict + 1, dict, (uint)dictSize); @@ -244,7 +270,10 @@ ZSTD_dictContentType_e dictContentType ) ) ) + { return null; + } + return ddict; } @@ -254,7 +283,10 @@ ZSTD_dictContentType_e dictContentType public static nuint ZSTD_freeDDict(ZSTD_DDict_s* ddict) { if (ddict == null) + { return 0; + } + { ZSTD_customMem cMem = ddict->cMem; ZSTD_customFree(ddict->dictBuffer, cMem); @@ -275,7 +307,10 @@ public static nuint ZSTD_estimateDDictSize(nuint dictSize, ZSTD_dictLoadMethod_e public static nuint ZSTD_sizeof_DDict(ZSTD_DDict_s* ddict) { if (ddict == null) + { return 0; + } + return (nuint)sizeof(ZSTD_DDict_s) + (ddict->dictBuffer != null ? ddict->dictSize : 0); } @@ -286,7 +321,10 @@ public static nuint ZSTD_sizeof_DDict(ZSTD_DDict_s* ddict) public static uint ZSTD_getDictID_fromDDict(ZSTD_DDict_s* ddict) { if (ddict == null) + { return 0; + } + return ddict->dictID; } } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompress.cs index ab20f04c1..ab954fb65 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompress.cs @@ -123,7 +123,10 @@ ZSTD_customMem customMem customMem ); if (ret == null) + { return null; + } + ret->ddictPtrTable = (ZSTD_DDict_s**)ZSTD_customCalloc( (nuint)(64 * sizeof(ZSTD_DDict_s*)), customMem @@ -190,7 +193,10 @@ ZSTD_customMem customMem public static nuint ZSTD_sizeof_DCtx(ZSTD_DCtx_s* dctx) { if (dctx == null) + { return 0; + } + return (nuint)sizeof(ZSTD_DCtx_s) + ZSTD_sizeof_DDict(dctx->ddictLocal) + dctx->inBuffSize @@ -246,9 +252,15 @@ private static void ZSTD_initDCtx_internal(ZSTD_DCtx_s* dctx) { ZSTD_DCtx_s* dctx = (ZSTD_DCtx_s*)workspace; if (((nuint)workspace & 7) != 0) + { return null; + } + if (workspaceSize < (nuint)sizeof(ZSTD_DCtx_s)) + { return null; + } + ZSTD_initDCtx_internal(dctx); dctx->staticSize = workspaceSize; dctx->inBuff = (sbyte*)(dctx + 1); @@ -258,14 +270,20 @@ private static void ZSTD_initDCtx_internal(ZSTD_DCtx_s* dctx) private static ZSTD_DCtx_s* ZSTD_createDCtx_internal(ZSTD_customMem customMem) { if (((customMem.customAlloc == null ? 1 : 0) ^ (customMem.customFree == null ? 1 : 0)) != 0) + { return null; + } + { ZSTD_DCtx_s* dctx = (ZSTD_DCtx_s*)ZSTD_customMalloc( (nuint)sizeof(ZSTD_DCtx_s), customMem ); if (dctx == null) + { return null; + } + dctx->customMem = customMem; ZSTD_initDCtx_internal(dctx); return dctx; @@ -293,7 +311,10 @@ private static void ZSTD_clearDict(ZSTD_DCtx_s* dctx) public static nuint ZSTD_freeDCtx(ZSTD_DCtx_s* dctx) { if (dctx == null) + { return 0; + } + if (dctx->staticSize != 0) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); @@ -357,13 +378,21 @@ private static void ZSTD_DCtx_selectFrameDDict(ZSTD_DCtx_s* dctx) public static uint ZSTD_isFrame(void* buffer, nuint size) { if (size < 4) + { return 0; + } + { uint magic = MEM_readLE32(buffer); if (magic == 0xFD2FB528) + { return 1; + } + if ((magic & 0xFFFFFFF0) == 0x184D2A50) + { return 1; + } } return 0; @@ -376,11 +405,16 @@ public static uint ZSTD_isFrame(void* buffer, nuint size) public static uint ZSTD_isSkippableFrame(void* buffer, nuint size) { if (size < 4) + { return 0; + } + { uint magic = MEM_readLE32(buffer); if ((magic & 0xFFFFFFF0) == 0x184D2A50) + { return 1; + } } return 0; @@ -481,7 +515,10 @@ ZSTD_format_e format if ((MEM_readLE32(src) & 0xFFFFFFF0) == 0x184D2A50) { if (srcSize < 8) + { return 8; + } + *zfhPtr = new ZSTD_frameHeader { frameType = ZSTD_frameType_e.ZSTD_skippableFrame, @@ -498,7 +535,10 @@ ZSTD_format_e format { nuint fhsize = ZSTD_frameHeaderSize_internal(src, srcSize, format); if (srcSize < fhsize) + { return fhsize; + } + zfhPtr->headerSize = (uint)fhsize; } @@ -562,7 +602,10 @@ ZSTD_format_e format goto case 0; case 0: if (singleSegment != 0) + { frameContentSize = ip[pos]; + } + break; case 1: frameContentSize = (ulong)(MEM_readLE16(ip + pos) + 256); @@ -576,7 +619,10 @@ ZSTD_format_e format } if (singleSegment != 0) + { windowSize = frameContentSize; + } + zfhPtr->frameType = ZSTD_frameType_e.ZSTD_frame; zfhPtr->frameContentSize = frameContentSize; zfhPtr->windowSize = windowSize; @@ -608,7 +654,10 @@ public static ulong ZSTD_getFrameContentSize(void* src, nuint srcSize) { ZSTD_frameHeader zfh; if (ZSTD_getFrameHeader(&zfh, src, srcSize) != 0) + { return unchecked(0UL - 2); + } + if (zfh.frameType == ZSTD_frameType_e.ZSTD_skippableFrame) { return 0; @@ -691,9 +740,15 @@ nuint srcSize } if (skippableContentSize > 0 && dst != null) + { memcpy(dst, (byte*)src + 8, (uint)skippableContentSize); + } + if (magicVariant != null) + { *magicVariant = magicNumber - 0x184D2A50; + } + return skippableContentSize; } } @@ -713,7 +768,10 @@ public static ulong ZSTD_findDecompressedSize(void* src, nuint srcSize) { nuint skippableSize = readSkippableFrameSize(src, srcSize); if (ERR_isError(skippableSize)) + { return unchecked(0UL - 2); + } + assert(skippableSize <= srcSize); src = (byte*)src + skippableSize; srcSize -= skippableSize; @@ -723,16 +781,25 @@ public static ulong ZSTD_findDecompressedSize(void* src, nuint srcSize) { ulong fcs = ZSTD_getFrameContentSize(src, srcSize); if (fcs >= unchecked(0UL - 2)) + { return fcs; + } + if (totalDstSize + fcs < totalDstSize) + { return unchecked(0UL - 2); + } + totalDstSize += fcs; } { nuint frameSrcSize = ZSTD_findFrameCompressedSize(src, srcSize); if (ERR_isError(frameSrcSize)) + { return unchecked(0UL - 2); + } + assert(frameSrcSize <= srcSize); src = (byte*)src + frameSrcSize; srcSize -= frameSrcSize; @@ -740,7 +807,10 @@ public static ulong ZSTD_findDecompressedSize(void* src, nuint srcSize) } if (srcSize != 0) + { return unchecked(0UL - 2); + } + return totalDstSize; } @@ -766,7 +836,10 @@ private static nuint ZSTD_decodeFrameHeader(ZSTD_DCtx_s* dctx, void* src, nuint { nuint result = ZSTD_getFrameHeader_advanced(&dctx->fParams, src, headerSize, dctx->format); if (ERR_isError(result)) + { return result; + } + if (result > 0) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); @@ -789,7 +862,10 @@ private static nuint ZSTD_decodeFrameHeader(ZSTD_DCtx_s* dctx, void* src, nuint dctx->fParams.checksumFlag != 0 && dctx->forceIgnoreChecksum == default ? 1 : 0 ); if (dctx->validateChecksum != 0) + { ZSTD_XXH64_reset(&dctx->xxhState, 0); + } + dctx->processedCSize += headerSize; return 0; } @@ -833,11 +909,16 @@ ZSTD_format_e format { nuint ret = ZSTD_getFrameHeader_advanced(&zfh, src, srcSize, format); if (ERR_isError(ret)) + { return ZSTD_errorFrameSizeInfo(ret); + } + if (ret > 0) + { return ZSTD_errorFrameSizeInfo( unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)) ); + } } ip += zfh.headerSize; @@ -847,24 +928,35 @@ ZSTD_format_e format blockProperties_t blockProperties; nuint cBlockSize = ZSTD_getcBlockSize(ip, remainingSize, &blockProperties); if (ERR_isError(cBlockSize)) + { return ZSTD_errorFrameSizeInfo(cBlockSize); + } + if (ZSTD_blockHeaderSize + cBlockSize > remainingSize) + { return ZSTD_errorFrameSizeInfo( unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)) ); + } + ip += ZSTD_blockHeaderSize + cBlockSize; remainingSize -= ZSTD_blockHeaderSize + cBlockSize; nbBlocks++; if (blockProperties.lastBlock != 0) + { break; + } } if (zfh.checksumFlag != 0) { if (remainingSize < 4) + { return ZSTD_errorFrameSizeInfo( unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)) ); + } + ip += 4; } @@ -915,7 +1007,10 @@ public static ulong ZSTD_decompressBound(void* src, nuint srcSize) nuint compressedSize = frameSizeInfo.compressedSize; ulong decompressedBound = frameSizeInfo.decompressedBound; if (ERR_isError(compressedSize) || decompressedBound == unchecked(0UL - 2)) + { return unchecked(0UL - 2); + } + assert(srcSize >= compressedSize); src = (byte*)src + compressedSize; srcSize -= compressedSize; @@ -971,7 +1066,10 @@ public static nuint ZSTD_decompressionMargin(void* src, nuint srcSize) } if (ERR_isError(compressedSize) || decompressedBound == unchecked(0UL - 2)) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); + } + if (zfh.frameType == ZSTD_frameType_e.ZSTD_frame) { margin += zfh.headerSize; @@ -1013,7 +1111,10 @@ private static nuint ZSTD_copyRawBlock(void* dst, nuint dstCapacity, void* src, if (dst == null) { if (srcSize == 0) + { return 0; + } + return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstBuffer_null)); } @@ -1031,7 +1132,10 @@ private static nuint ZSTD_setRleBlock(void* dst, nuint dstCapacity, byte b, nuin if (dst == null) { if (regenSize == 0) + { return 0; + } + return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstBuffer_null)); } @@ -1079,7 +1183,10 @@ private static nuint ZSTD_decompressFrame( dctx->format ); if (ERR_isError(frameHeaderSize)) + { return frameHeaderSize; + } + if (remainingSrcSize < frameHeaderSize + ZSTD_blockHeaderSize) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); @@ -1098,10 +1205,13 @@ private static nuint ZSTD_decompressFrame( } if (dctx->maxBlockSizeParam != 0) + { dctx->fParams.blockSizeMax = dctx->fParams.blockSizeMax < (uint)dctx->maxBlockSizeParam ? dctx->fParams.blockSizeMax : (uint)dctx->maxBlockSizeParam; + } + while (true) { byte* oBlockEnd = oend; @@ -1109,7 +1219,10 @@ private static nuint ZSTD_decompressFrame( blockProperties_t blockProperties; nuint cBlockSize = ZSTD_getcBlockSize(ip, remainingSrcSize, &blockProperties); if (ERR_isError(cBlockSize)) + { return cBlockSize; + } + ip += ZSTD_blockHeaderSize; remainingSrcSize -= ZSTD_blockHeaderSize; if (cBlockSize > remainingSrcSize) @@ -1173,7 +1286,9 @@ private static nuint ZSTD_decompressFrame( ip += cBlockSize; remainingSrcSize -= cBlockSize; if (blockProperties.lastBlock != 0) + { break; + } } if (dctx->fParams.frameContentSize != unchecked(0UL - 1)) @@ -1288,10 +1403,16 @@ private static nuint ZSTD_decompressMultiFrame( } if (ERR_isError(res)) + { return res; + } + assert(res <= dstCapacity); if (res != 0) + { dst = (byte*)dst + res; + } + dstCapacity -= res; } @@ -1428,9 +1549,15 @@ nuint inputSize || dctx->stage == ZSTD_dStage.ZSTDds_decompressLastBlock ) ) + { return dctx->expected; + } + if (dctx->bType != blockType_e.bt_raw) + { return dctx->expected; + } + return inputSize <= 1 ? 1 : inputSize <= dctx->expected ? inputSize : dctx->expected; @@ -1502,7 +1629,10 @@ nuint srcSize dctx->headerSize = ZSTD_frameHeaderSize_internal(src, srcSize, dctx->format); if (ERR_isError(dctx->headerSize)) + { return dctx->headerSize; + } + memcpy(dctx->headerBuffer, src, (uint)srcSize); dctx->expected = dctx->headerSize - srcSize; dctx->stage = ZSTD_dStage.ZSTDds_decodeFrameHeader; @@ -1531,7 +1661,10 @@ nuint srcSize blockProperties_t bp; nuint cBlockSize = ZSTD_getcBlockSize(src, ZSTD_blockHeaderSize, &bp); if (ERR_isError(cBlockSize)) + { return cBlockSize; + } + if (cBlockSize > dctx->fParams.blockSizeMax) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); @@ -1630,7 +1763,10 @@ nuint srcSize dctx->decodedSize += rSize; if (dctx->validateChecksum != 0) + { ZSTD_XXH64_update(&dctx->xxhState, dst, rSize); + } + dctx->previousDstEnd = (sbyte*)dst + rSize; if (dctx->expected > 0) { @@ -1913,7 +2049,10 @@ nuint dictSize ) { if (dictSize < 8) + { return ZSTD_refDictContent(dctx, dict, dictSize); + } + { uint magic = MEM_readLE32(dict); if (magic != 0xEC30A437) @@ -1977,10 +2116,12 @@ nuint dictSize } if (dict != null && dictSize != 0) + { if (ERR_isError(ZSTD_decompress_insertDictionary(dctx, dict, dictSize))) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dictionary_corrupted)); } + } return 0; } @@ -2020,9 +2161,15 @@ public static nuint ZSTD_decompressBegin_usingDDict(ZSTD_DCtx_s* dctx, ZSTD_DDic public static uint ZSTD_getDictID_fromDict(void* dict, nuint dictSize) { if (dictSize < 8) + { return 0; + } + if (MEM_readLE32(dict) != 0xEC30A437) + { return 0; + } + return MEM_readLE32((sbyte*)dict + 4); } @@ -2055,7 +2202,10 @@ public static uint ZSTD_getDictID_fromFrame(void* src, nuint srcSize) }; nuint hError = ZSTD_getFrameHeader(&zfp, src, srcSize); if (ERR_isError(hError)) + { return 0; + } + return zfp.dictID; } @@ -2492,11 +2642,20 @@ private static int ZSTD_dParam_withinBounds(ZSTD_dParameter dParam, int value) { ZSTD_bounds bounds = ZSTD_dParam_getBounds(dParam); if (ERR_isError(bounds.error)) + { return 0; + } + if (value < bounds.lowerBound) + { return 0; + } + if (value > bounds.upperBound) + { return 0; + } + return 1; } @@ -2555,7 +2714,9 @@ public static nuint ZSTD_DCtx_setParameter(ZSTD_DCtx_s* dctx, ZSTD_dParameter dP { case ZSTD_dParameter.ZSTD_d_windowLogMax: if (value == 0) + { value = 27; + } { if (ZSTD_dParam_withinBounds(ZSTD_dParameter.ZSTD_d_windowLogMax, value) == 0) @@ -2765,7 +2926,10 @@ public static nuint ZSTD_estimateDStreamSize_fromFrame(void* src, nuint srcSize) ZSTD_frameHeader zfh; nuint err = ZSTD_getFrameHeader(&zfh, src, srcSize); if (ERR_isError(err)) + { return err; + } + if (err > 0) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_srcSize_wrong)); @@ -2800,9 +2964,13 @@ nuint neededOutBuffSize ) { if (ZSTD_DCtx_isOverflow(zds, neededInBuffSize, neededOutBuffSize) != 0) + { zds->oversizedDuration++; + } else + { zds->oversizedDuration = 0; + } } private static int ZSTD_DCtx_isOversizedTooLong(ZSTD_DCtx_s* zds) @@ -2815,11 +2983,20 @@ private static nuint ZSTD_checkOutBuffer(ZSTD_DCtx_s* zds, ZSTD_outBuffer_s* out { ZSTD_outBuffer_s expect = zds->expectedOutBuffer; if (zds->outBufferMode != ZSTD_bufferMode_e.ZSTD_bm_stable) + { return 0; + } + if (zds->streamStage == ZSTD_dStreamStage.zdss_init) + { return 0; + } + if (expect.dst == output->dst && expect.pos == output->pos && expect.size == output->size) + { return 0; + } + return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstBuffer_wrong)); } @@ -3047,7 +3224,10 @@ public static nuint ZSTD_decompressStream( ZSTD_getDDict(zds) ); if (ERR_isError(decompressedSize)) + { return decompressedSize; + } + assert(istart != null); ip = istart + cSize; op = op != null ? op + decompressedSize : op; @@ -3112,10 +3292,12 @@ public static nuint ZSTD_decompressStream( } if (zds->maxBlockSizeParam != 0) + { zds->fParams.blockSizeMax = zds->fParams.blockSizeMax < (uint)zds->maxBlockSizeParam ? zds->fParams.blockSizeMax : (uint)zds->maxBlockSizeParam; + } { /* frame checksum */ diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompressBlock.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompressBlock.cs index fd4168b54..297b23324 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompressBlock.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDecompressBlock.cs @@ -41,7 +41,10 @@ private static nuint ZSTD_getcBlockSize(void* src, nuint srcSize, blockPropertie bpPtr->blockType = (blockType_e)(cBlockHeader >> 1 & 3); bpPtr->origSize = cSize; if (bpPtr->blockType == blockType_e.bt_rle) + { return 1; + } + if (bpPtr->blockType == blockType_e.bt_reserved) { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_corruption_detected)); @@ -198,12 +201,14 @@ streaming_operation streaming } if (singleStream == 0) + { if (litSize < 6) { return unchecked( (nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_literals_headerWrong) ); } + } if (litCSize + lhSize > srcSize) { @@ -325,7 +330,10 @@ streaming_operation streaming dctx->litSize = litSize; dctx->litEntropy = 1; if (litEncType == SymbolEncodingType_e.set_compressed) + { dctx->HUFptr = dctx->entropy.hufTable; + } + return litCSize + lhSize; } @@ -763,7 +771,10 @@ nuint wkspSize else { if (normalizedCounter[s] >= largeLimit) + { DTableH.fastMode = 0; + } + assert(normalizedCounter[s] >= 0); symbolNext[s] = (ushort)normalizedCounter[s]; } @@ -833,7 +844,9 @@ nuint wkspSize tableDecode[position].baseValue = s; position = position + step & tableMask; while (position > highThreshold) + { position = position + step & tableMask; + } } } @@ -1264,7 +1277,10 @@ ZSTD_overlap_e ovtype if (length < 8) { while (op < oend) + { *op++ = *ip++; + } + return; } @@ -1292,7 +1308,9 @@ ZSTD_overlap_e ovtype } while (op < oend) + { *op++ = *ip++; + } } /* ZSTD_safecopyDstBeforeSrc(): @@ -1305,7 +1323,10 @@ private static void ZSTD_safecopyDstBeforeSrc(byte* op, byte* ip, nint length) if (length < 8 || diff > -8) { while (op < oend) + { *op++ = *ip++; + } + return; } @@ -1317,7 +1338,9 @@ private static void ZSTD_safecopyDstBeforeSrc(byte* op, byte* ip, nint length) } while (op < oend) + { *op++ = *ip++; + } } /* ZSTD_execSequenceEnd(): @@ -1500,6 +1523,7 @@ private static nuint ZSTD_execSequence( || oMatchEnd > oend_w || MEM_32bits && (nuint)(oend - op) < sequenceLength + 32 ) + { return ZSTD_execSequenceEnd( op, oend, @@ -1515,6 +1539,8 @@ private static nuint ZSTD_execSequence( virtualStart, dictEnd ); + } + assert(op <= oLitEnd); assert(oLitEnd < oMatchEnd); assert(oMatchEnd <= oend); @@ -1610,6 +1636,7 @@ private static nuint ZSTD_execSequenceSplitLitBuffer( || oMatchEnd > oend_w || MEM_32bits && (nuint)(oend - op) < sequenceLength + 32 ) + { return ZSTD_execSequenceEndSplitLitBuffer( op, oend, @@ -1621,6 +1648,8 @@ private static nuint ZSTD_execSequenceSplitLitBuffer( virtualStart, dictEnd ); + } + assert(op <= oLitEnd); assert(oLitEnd < oMatchEnd); assert(oMatchEnd <= oend); @@ -1772,7 +1801,9 @@ int isLastSeq { offset = ofBase + BIT_readBitsFast(&seqState->DStream, ofBits); if (MEM_32bits) + { BIT_reloadDStream(&seqState->DStream); + } } seqState->prevOffset.e2 = seqState->prevOffset.e1; @@ -1798,7 +1829,10 @@ int isLastSeq : (&seqState->prevOffset.e0)[offset]; temp -= temp == 0 ? 1U : 0U; if (offset != 1) + { seqState->prevOffset.e2 = seqState->prevOffset.e1; + } + seqState->prevOffset.e1 = seqState->prevOffset.e0; seqState->prevOffset.e0 = offset = temp; } @@ -1809,15 +1843,30 @@ int isLastSeq } if (mlBits > 0) + { seq.matchLength += BIT_readBitsFast(&seqState->DStream, mlBits); + } + if (MEM_32bits && mlBits + llBits >= 25 - (30 - 25)) + { BIT_reloadDStream(&seqState->DStream); + } + if (MEM_64bits && totalBits >= 57 - (9 + 9 + 8)) + { BIT_reloadDStream(&seqState->DStream); + } + if (llBits > 0) + { seq.litLength += BIT_readBitsFast(&seqState->DStream, llBits); + } + if (MEM_32bits) + { BIT_reloadDStream(&seqState->DStream); + } + if (isLastSeq == 0) { ZSTD_updateFseStateWithDInfo( @@ -1833,7 +1882,10 @@ int isLastSeq mlnbBits ); if (MEM_32bits) + { BIT_reloadDStream(&seqState->DStream); + } + ZSTD_updateFseStateWithDInfo( &seqState->stateOffb, &seqState->DStream, @@ -1875,7 +1927,9 @@ ZSTD_longOffset_e isLongOffset { uint i; for (i = 0; i < 3; i++) + { (&seqState.prevOffset.e0)[i] = dctx->entropy.rep[i]; + } } if (ERR_isError(BIT_initDStream(&seqState.DStream, ip, (nuint)(iend - ip)))) @@ -1899,7 +1953,10 @@ ZSTD_longOffset_e isLongOffset { sequence = ZSTD_decodeSequence(&seqState, isLongOffset, nbSeq == 1 ? 1 : 0); if (litPtr + sequence.litLength > dctx->litBufferEnd) + { break; + } + { nuint oneSeqSize = ZSTD_execSequenceSplitLitBuffer( op, @@ -1913,7 +1970,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + op += oneSeqSize; } } @@ -1950,7 +2010,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + op += oneSeqSize; } @@ -1978,7 +2041,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + op += oneSeqSize; } } @@ -1996,7 +2062,9 @@ ZSTD_longOffset_e isLongOffset { uint i; for (i = 0; i < 3; i++) + { dctx->entropy.rep[i] = (uint)(&seqState.prevOffset.e0)[i]; + } } } @@ -2071,8 +2139,10 @@ ZSTD_longOffset_e isLongOffset { uint i; for (i = 0; i < 3; i++) + { System.Runtime.CompilerServices.Unsafe.Add(ref seqState.prevOffset.e0, (int)i) = dctx->entropy.rep[i]; + } } if (ERR_isError(BIT_initDStream(ref seqState.DStream, ip, (nuint)(iend - ip)))) @@ -2156,6 +2226,7 @@ ZSTD_longOffset_e isLongOffset ofBits ); if (MEM_32bits) + { BIT_reloadDStream( ref seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, @@ -2163,6 +2234,7 @@ ZSTD_longOffset_e isLongOffset seqState_DStream_start, seqState_DStream_limitPtr ); + } } seqState.prevOffset.e2 = seqState.prevOffset.e1; @@ -2204,7 +2276,10 @@ ZSTD_longOffset_e isLongOffset ); temp -= temp == 0 ? 1U : 0U; if (offset != 1) + { seqState.prevOffset.e2 = seqState.prevOffset.e1; + } + seqState.prevOffset.e1 = seqState.prevOffset.e0; seqState.prevOffset.e0 = offset = temp; } @@ -2215,12 +2290,16 @@ ZSTD_longOffset_e isLongOffset } if (mlBits > 0) + { sequence_matchLength += BIT_readBitsFast( seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, mlBits ); + } + if (MEM_32bits && mlBits + llBits >= 25 - (30 - 25)) + { BIT_reloadDStream( ref seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, @@ -2228,7 +2307,10 @@ ZSTD_longOffset_e isLongOffset seqState_DStream_start, seqState_DStream_limitPtr ); + } + if (MEM_64bits && totalBits >= 57 - (9 + 9 + 8)) + { BIT_reloadDStream( ref seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, @@ -2236,13 +2318,19 @@ ZSTD_longOffset_e isLongOffset seqState_DStream_start, seqState_DStream_limitPtr ); + } + if (llBits > 0) + { sequence_litLength += BIT_readBitsFast( seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, llBits ); + } + if (MEM_32bits) + { BIT_reloadDStream( ref seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, @@ -2250,6 +2338,8 @@ ZSTD_longOffset_e isLongOffset seqState_DStream_start, seqState_DStream_limitPtr ); + } + if ((nbSeq == 1 ? 1 : 0) == 0) { ZSTD_updateFseStateWithDInfo( @@ -2267,6 +2357,7 @@ ZSTD_longOffset_e isLongOffset mlnbBits ); if (MEM_32bits) + { BIT_reloadDStream( ref seqState_DStream_bitContainer, ref seqState_DStream_bitsConsumed, @@ -2274,6 +2365,8 @@ ZSTD_longOffset_e isLongOffset seqState_DStream_start, seqState_DStream_limitPtr ); + } + ZSTD_updateFseStateWithDInfo( ref seqState.stateOffb, seqState_DStream_bitContainer, @@ -2406,7 +2499,10 @@ ZSTD_longOffset_e isLongOffset } if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + op += oneSeqSize; } @@ -2425,11 +2521,13 @@ ZSTD_longOffset_e isLongOffset { uint i; for (i = 0; i < 3; i++) + { dctx->entropy.rep[i] = (uint) System.Runtime.CompilerServices.Unsafe.Add( ref seqState.prevOffset.e0, (int)i ); + } } } @@ -2561,7 +2659,9 @@ ZSTD_longOffset_e isLongOffset { int i; for (i = 0; i < 3; i++) + { (&seqState.prevOffset.e0)[i] = dctx->entropy.rep[i]; + } } assert(dst != null); @@ -2628,7 +2728,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + prefetchPos = ZSTD_prefetchMatch( prefetchPos, sequence, @@ -2666,7 +2769,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd); sequences[seqNb & 8 - 1] = sequence; op += oneSeqSize; @@ -2717,7 +2823,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + op += oneSeqSize; } } @@ -2747,7 +2856,10 @@ ZSTD_longOffset_e isLongOffset dictEnd ); if (ERR_isError(oneSeqSize)) + { return oneSeqSize; + } + op += oneSeqSize; } } @@ -2755,7 +2867,9 @@ ZSTD_longOffset_e isLongOffset { uint i; for (i = 0; i < 3; i++) + { dctx->entropy.rep[i] = (uint)(&seqState.prevOffset.e0)[i]; + } } } @@ -2917,7 +3031,9 @@ private static ZSTD_OffsetInfo ZSTD_getOffsetInfo(ZSTD_seqSymbol* offTable, int ? info.maxNbAdditionalBits : table[u].nbAdditionalBits; if (table[u].nbAdditionalBits > 22) + { info.longOffsetShare += 1; + } } assert(tableLog <= 8); @@ -2982,7 +3098,10 @@ streaming_operation streaming streaming ); if (ERR_isError(litCSize)) + { return litCSize; + } + ip += litCSize; srcSize -= litCSize; } @@ -3015,7 +3134,10 @@ streaming_operation streaming int nbSeq; nuint seqHSize = ZSTD_decodeSeqHeaders(dctx, &nbSeq, ip, srcSize); if (ERR_isError(seqHSize)) + { return seqHSize; + } + ip += seqHSize; srcSize -= seqHSize; if ((dst == null || dstCapacity == 0) && nbSeq > 0) @@ -3069,6 +3191,7 @@ streaming_operation streaming } if (dctx->litBufferLocation == ZSTD_litLocation_e.ZSTD_split) + { return ZSTD_decompressSequencesSplitLitBuffer( dctx, dst, @@ -3078,7 +3201,9 @@ streaming_operation streaming nbSeq, isLongOffset ); + } else + { return ZSTD_decompressSequences( dctx, dst, @@ -3088,6 +3213,7 @@ streaming_operation streaming nbSeq, isLongOffset ); + } } } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDoubleFast.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDoubleFast.cs index 55d383ecb..c7d37df67 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDoubleFast.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdDoubleFast.cs @@ -42,7 +42,9 @@ ZSTD_dictTableLoadMethod_e dtlm } if (dtlm == ZSTD_dictTableLoadMethod_e.ZSTD_dtlm_fast) + { break; + } } } } @@ -72,11 +74,19 @@ ZSTD_dictTableLoadMethod_e dtlm nuint smHash = ZSTD_hashPtr(ip + i, hBitsS, mls); nuint lgHash = ZSTD_hashPtr(ip + i, hBitsL, 8); if (i == 0) + { hashSmall[smHash] = curr + i; + } + if (i == 0 || hashLarge[lgHash] == 0) + { hashLarge[lgHash] = curr + i; + } + if (dtlm == ZSTD_dictTableLoadMethod_e.ZSTD_dtlm_fast) + { break; + } } } } @@ -870,7 +880,10 @@ uint mls uint offset_1 = rep[0], offset_2 = rep[1]; if (prefixStartIndex == dictStartIndex) + { return ZSTD_compressBlock_doubleFast(ms, seqStore, rep, src, srcSize); + } + while (ip < ilimit) { nuint hSmall = ZSTD_hashPtr(ip, hBitsS, mls); diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdFast.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdFast.cs index 518954b6b..c2dd99c6e 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdFast.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdFast.cs @@ -29,7 +29,10 @@ ZSTD_dictTableLoadMethod_e dtlm } if (dtlm == ZSTD_dictTableLoadMethod_e.ZSTD_dtlm_fast) + { continue; + } + { uint p; for (p = 1; p < fastHashFillStep; ++p) @@ -65,7 +68,10 @@ ZSTD_dictTableLoadMethod_e dtlm nuint hash0 = ZSTD_hashPtr(ip, hBits, mls); hashTable[hash0] = curr; if (dtlm == ZSTD_dictTableLoadMethod_e.ZSTD_dtlm_fast) + { continue; + } + { uint p; for (p = 1; p < fastHashFillStep; ++p) @@ -110,7 +116,10 @@ uint idxLowLimit */ byte* mvalAddr = ZSTD_selectAddr(matchIdx, idxLowLimit, matchAddress, dummy); if (MEM_read32(currentPtr) != MEM_read32(mvalAddr)) + { return 0; + } + return matchIdx >= idxLowLimit ? 1 : 0; } @@ -729,7 +738,10 @@ uint hasStep ip0 = ip1; ip1 = ip1 + step; if (ip1 > ilimit) + { goto _cleanup; + } + curr = (uint)(ip0 - @base); hash0 = hash1; } @@ -941,7 +953,10 @@ uint hasStep byte* nextStep; const nuint kStepIncr = 1 << 8 - 1; if (prefixStartIndex == dictStartIndex) + { return ZSTD_compressBlock_fast(ms, seqStore, rep, src, srcSize); + } + { uint curr = (uint)(ip0 - @base); uint maxRep = curr - dictStartIndex; diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdInternal.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdInternal.cs index bea3765fa..c8b9f15da 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdInternal.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdInternal.cs @@ -604,7 +604,10 @@ private static void ZSTD_wildcopy(void* dst, void* src, nint length, ZSTD_overla assert(diff >= 16 || diff <= -16); ZSTD_copy16(op, ip); if (16 >= length) + { return; + } + op += 16; ip += 16; do diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLazy.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLazy.cs index 2256ffbfe..a1ed13a03 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLazy.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLazy.cs @@ -116,7 +116,9 @@ ZSTD_dictMode_e dictMode prefixStart ); if (matchIndex + matchLength >= dictLimit) + { match = @base + matchIndex; + } } if (ip + matchLength == iend) @@ -202,7 +204,10 @@ ZSTD_dictMode_e dictMode prefixStart ); if (dictMatchIndex + matchLength >= dictHighLimit) + { match = @base + dictMatchIndex + dictIndexDelta; + } + if (matchLength > bestLength) { uint matchIndex = dictMatchIndex + dictIndexDelta; @@ -353,13 +358,18 @@ ZSTD_dictMode_e dictMode prefixStart ); if (matchIndex + matchLength >= dictLimit) + { match = @base + matchIndex; + } } if (matchLength > bestLength) { if (matchLength > matchEndIdx - matchIndex) + { matchEndIdx = matchIndex + (uint)matchLength; + } + if ( 4 * (int)(matchLength - bestLength) > (int)( @@ -452,7 +462,10 @@ ZSTD_dictMode_e dictMode ) { if (ip < ms->window.@base + ms->nextToUpdate) + { return 0; + } + ZSTD_updateDUBT(ms, ip, iLimit, mls); return ZSTD_DUBT_findBestMatch(ms, ip, iLimit, offBasePtr, mls, dictMode); } @@ -577,7 +590,10 @@ private static void ZSTD_dedicatedDictSearch_lazy_loadDictionary( uint h = (uint)ZSTD_hashPtr(@base + idx, hashLog, ms->cParams.minMatch) << 2; uint i; for (i = cacheSize - 1; i != 0; i--) + { hashTable[h + i] = hashTable[h + i - 1]; + } + hashTable[h] = idx; } @@ -699,7 +715,9 @@ nuint ddsIdx assert(curr - (matchIndex + ddsIndexDelta) > 0); *offsetPtr = curr - (matchIndex + ddsIndexDelta) + 3; if (ip + currentMl == iLimit) + { break; + } } } } @@ -732,7 +750,9 @@ uint lazySkipping hashTable[h] = idx; idx++; if (lazySkipping != 0) + { break; + } } ms->nextToUpdate = target; @@ -809,15 +829,19 @@ ZSTD_dictMode_e dictMode byte* match = @base + matchIndex; assert(matchIndex >= dictLimit); if (MEM_read32(match + ml - 3) == MEM_read32(ip + ml - 3)) + { currentMl = ZSTD_count(ip, match, iLimit); + } } else { byte* match = dictBase + matchIndex; assert(match + 4 <= dictEnd); if (MEM_read32(match) == MEM_read32(ip)) + { currentMl = ZSTD_count_2segments(ip + 4, match + 4, iLimit, dictEnd, prefixStart) + 4; + } } if (currentMl > ml) @@ -826,11 +850,16 @@ ZSTD_dictMode_e dictMode assert(curr - matchIndex > 0); *offsetPtr = curr - matchIndex + 3; if (ip + currentMl == iLimit) + { break; + } } if (matchIndex <= minChain) + { break; + } + matchIndex = chainTable[matchIndex & chainMask]; } @@ -868,8 +897,11 @@ ZSTD_dictMode_e dictMode byte* match = dmsBase + matchIndex; assert(match + 4 <= dmsEnd); if (MEM_read32(match) == MEM_read32(ip)) + { currentMl = ZSTD_count_2segments(ip + 4, match + 4, iLimit, dmsEnd, prefixStart) + 4; + } + if (currentMl > ml) { ml = currentMl; @@ -877,11 +909,16 @@ ZSTD_dictMode_e dictMode assert(curr - (matchIndex + dmsIndexDelta) > 0); *offsetPtr = curr - (matchIndex + dmsIndexDelta) + 3; if (ip + currentMl == iLimit) + { break; + } } if (matchIndex <= dmsMinChain) + { break; + } + matchIndex = dmsChainTable[matchIndex & dmsChainMask]; } } @@ -1139,14 +1176,21 @@ private static uint ZSTD_row_matchMaskGroupWidth(uint rowEntries) if (AdvSimd.IsSupported && BitConverter.IsLittleEndian) { if (rowEntries == 16) + { return 4; + } #if NET9_0_OR_GREATER if (AdvSimd.Arm64.IsSupported) { if (rowEntries == 32) + { return 2; + } + if (rowEntries == 64) + { return 1; + } } #endif } @@ -1487,10 +1531,16 @@ uint rowLog uint matchPos = (headGrouped + ZSTD_VecMask_next(matches)) / groupWidth & rowMask; uint matchIndex = row[matchPos]; if (matchPos == 0) + { continue; + } + assert(numMatches < rowEntries); if (matchIndex < lowLimit) + { break; + } + if (dictMode != ZSTD_dictMode_e.ZSTD_extDict || matchIndex >= dictLimit) { #if NETCOREAPP3_0_OR_GREATER @@ -1531,16 +1581,20 @@ uint rowLog byte* match = @base + matchIndex; assert(matchIndex >= dictLimit); if (MEM_read32(match + ml - 3) == MEM_read32(ip + ml - 3)) + { currentMl = ZSTD_count(ip, match, iLimit); + } } else { byte* match = dictBase + matchIndex; assert(match + 4 <= dictEnd); if (MEM_read32(match) == MEM_read32(ip)) + { currentMl = ZSTD_count_2segments(ip + 4, match + 4, iLimit, dictEnd, prefixStart) + 4; + } } if (currentMl > ml) @@ -1549,7 +1603,9 @@ uint rowLog assert(curr - matchIndex > 0); *offsetPtr = curr - matchIndex + 3; if (ip + currentMl == iLimit) + { break; + } } } } @@ -1595,9 +1651,14 @@ uint rowLog (headGrouped + ZSTD_VecMask_next(matches)) / groupWidth & rowMask; uint matchIndex = dmsRow[matchPos]; if (matchPos == 0) + { continue; + } + if (matchIndex < dmsLowestIndex) + { break; + } #if NETCOREAPP3_0_OR_GREATER if (Sse.IsSupported) { @@ -1619,9 +1680,11 @@ uint rowLog byte* match = dmsBase + matchIndex; assert(match + 4 <= dmsEnd); if (MEM_read32(match) == MEM_read32(ip)) + { currentMl = ZSTD_count_2segments(ip + 4, match + 4, iLimit, dmsEnd, prefixStart) + 4; + } } if (currentMl > ml) @@ -1631,7 +1694,9 @@ uint rowLog assert(curr - (matchIndex + dmsIndexDelta) > 0); *offsetPtr = curr - (matchIndex + dmsIndexDelta) + 3; if (ip + currentMl == iLimit) + { break; + } } } } @@ -3186,7 +3251,10 @@ ZSTD_dictMode_e dictMode if (mls == 4) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_noDict_4_4(ms, ip, iend, offsetPtr); + } + return rowLog == 5 ? ZSTD_RowFindBestMatch_noDict_4_5(ms, ip, iend, offsetPtr) : ZSTD_RowFindBestMatch_noDict_4_6(ms, ip, iend, offsetPtr); @@ -3195,14 +3263,20 @@ ZSTD_dictMode_e dictMode if (mls == 5) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_noDict_5_4(ms, ip, iend, offsetPtr); + } + return rowLog == 5 ? ZSTD_RowFindBestMatch_noDict_5_5(ms, ip, iend, offsetPtr) : ZSTD_RowFindBestMatch_noDict_5_6(ms, ip, iend, offsetPtr); } if (rowLog == 4) + { return ZSTD_RowFindBestMatch_noDict_6_4(ms, ip, iend, offsetPtr); + } + return rowLog == 5 ? ZSTD_RowFindBestMatch_noDict_6_5(ms, ip, iend, offsetPtr) : ZSTD_RowFindBestMatch_noDict_6_6(ms, ip, iend, offsetPtr); @@ -3211,7 +3285,10 @@ ZSTD_dictMode_e dictMode if (searchMethod == searchMethod_e.search_hashChain) { if (mls == 4) + { return ZSTD_HcFindBestMatch_noDict_4(ms, ip, iend, offsetPtr); + } + return mls == 5 ? ZSTD_HcFindBestMatch_noDict_5(ms, ip, iend, offsetPtr) : ZSTD_HcFindBestMatch_noDict_6(ms, ip, iend, offsetPtr); @@ -3219,7 +3296,10 @@ ZSTD_dictMode_e dictMode // searchMethod_e.search_binaryTree if (mls == 4) + { return ZSTD_BtFindBestMatch_noDict_4(ms, ip, iend, offsetPtr); + } + return mls == 5 ? ZSTD_BtFindBestMatch_noDict_5(ms, ip, iend, offsetPtr) : ZSTD_BtFindBestMatch_noDict_6(ms, ip, iend, offsetPtr); @@ -3232,27 +3312,45 @@ ZSTD_dictMode_e dictMode if (mls == 4) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_extDict_4_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_extDict_4_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_extDict_4_6(ms, ip, iend, offsetPtr); } if (mls == 5) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_extDict_5_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_extDict_5_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_extDict_5_6(ms, ip, iend, offsetPtr); } if (mls == 6) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_extDict_6_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_extDict_6_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_extDict_6_6(ms, ip, iend, offsetPtr); } } @@ -3260,17 +3358,29 @@ ZSTD_dictMode_e dictMode if (searchMethod == searchMethod_e.search_hashChain) { if (mls == 4) + { return ZSTD_HcFindBestMatch_extDict_4(ms, ip, iend, offsetPtr); + } + if (mls == 5) + { return ZSTD_HcFindBestMatch_extDict_5(ms, ip, iend, offsetPtr); + } + return ZSTD_HcFindBestMatch_extDict_6(ms, ip, iend, offsetPtr); } // searchMethod_e.search_binaryTree if (mls == 4) + { return ZSTD_BtFindBestMatch_extDict_4(ms, ip, iend, offsetPtr); + } + if (mls == 5) + { return ZSTD_BtFindBestMatch_extDict_5(ms, ip, iend, offsetPtr); + } + return ZSTD_BtFindBestMatch_extDict_6(ms, ip, iend, offsetPtr); } @@ -3281,27 +3391,45 @@ ZSTD_dictMode_e dictMode if (mls == 4) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_dictMatchState_4_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_dictMatchState_4_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_dictMatchState_4_6(ms, ip, iend, offsetPtr); } if (mls == 5) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_dictMatchState_5_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_dictMatchState_5_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_dictMatchState_5_6(ms, ip, iend, offsetPtr); } if (mls == 6) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_dictMatchState_6_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_dictMatchState_6_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_dictMatchState_6_6(ms, ip, iend, offsetPtr); } } @@ -3309,17 +3437,29 @@ ZSTD_dictMode_e dictMode if (searchMethod == searchMethod_e.search_hashChain) { if (mls == 4) + { return ZSTD_HcFindBestMatch_dictMatchState_4(ms, ip, iend, offsetPtr); + } + if (mls == 5) + { return ZSTD_HcFindBestMatch_dictMatchState_5(ms, ip, iend, offsetPtr); + } + return ZSTD_HcFindBestMatch_dictMatchState_6(ms, ip, iend, offsetPtr); } // search_binaryTree if (mls == 4) + { return ZSTD_BtFindBestMatch_dictMatchState_4(ms, ip, iend, offsetPtr); + } + if (mls == 5) + { return ZSTD_BtFindBestMatch_dictMatchState_5(ms, ip, iend, offsetPtr); + } + return ZSTD_BtFindBestMatch_dictMatchState_6(ms, ip, iend, offsetPtr); } @@ -3328,27 +3468,45 @@ ZSTD_dictMode_e dictMode if (mls == 4) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_dedicatedDictSearch_4_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_dedicatedDictSearch_4_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_dedicatedDictSearch_4_6(ms, ip, iend, offsetPtr); } if (mls == 5) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_dedicatedDictSearch_5_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_dedicatedDictSearch_5_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_dedicatedDictSearch_5_6(ms, ip, iend, offsetPtr); } if (mls == 6) { if (rowLog == 4) + { return ZSTD_RowFindBestMatch_dedicatedDictSearch_6_4(ms, ip, iend, offsetPtr); + } + if (rowLog == 5) + { return ZSTD_RowFindBestMatch_dedicatedDictSearch_6_5(ms, ip, iend, offsetPtr); + } + return ZSTD_RowFindBestMatch_dedicatedDictSearch_6_6(ms, ip, iend, offsetPtr); } } @@ -3356,17 +3514,29 @@ ZSTD_dictMode_e dictMode if (searchMethod == searchMethod_e.search_hashChain) { if (mls == 4) + { return ZSTD_HcFindBestMatch_dedicatedDictSearch_4(ms, ip, iend, offsetPtr); + } + if (mls == 5) + { return ZSTD_HcFindBestMatch_dedicatedDictSearch_5(ms, ip, iend, offsetPtr); + } + return ZSTD_HcFindBestMatch_dedicatedDictSearch_6(ms, ip, iend, offsetPtr); } // searchMethod_e.search_binaryTree if (mls == 4) + { return ZSTD_BtFindBestMatch_dedicatedDictSearch_4(ms, ip, iend, offsetPtr); + } + if (mls == 5) + { return ZSTD_BtFindBestMatch_dedicatedDictSearch_5(ms, ip, iend, offsetPtr); + } + return ZSTD_BtFindBestMatch_dedicatedDictSearch_6(ms, ip, iend, offsetPtr); } @@ -3481,7 +3651,9 @@ ZSTD_dictMode_e dictMode prefixLowest ) + 4; if (depth == 0) + { goto _storeSequence; + } } } @@ -3493,7 +3665,9 @@ ZSTD_dictMode_e dictMode { matchLength = ZSTD_count(ip + 1 + 4, ip + 1 + 4 - offset_1, iend) + 4; if (depth == 0) + { goto _storeSequence; + } } { @@ -3526,6 +3700,7 @@ ZSTD_dictMode_e dictMode } if (depth >= 1) + { while (ip < ilimit) { ip++; @@ -3693,6 +3868,7 @@ ZSTD_dictMode_e dictMode break; } + } if (offBase > 3) { @@ -4267,6 +4443,7 @@ uint depth & (offset_1 <= curr + 1 - windowLow ? 1 : 0) ) != 0 ) + { if (MEM_read32(ip + 1) == MEM_read32(repMatch)) { /* repcode detected we should take it */ @@ -4280,8 +4457,11 @@ uint depth prefixStart ) + 4; if (depth == 0) + { goto _storeSequence; + } } + } } { @@ -4313,6 +4493,7 @@ uint depth } if (depth >= 1) + { while (ip < ilimit) { ip++; @@ -4329,6 +4510,7 @@ uint depth & (offset_1 <= curr - windowLow ? 1 : 0) ) != 0 ) + { if (MEM_read32(ip) == MEM_read32(repMatch)) { /* repcode detected */ @@ -4354,6 +4536,7 @@ uint depth start = ip; } } + } } { @@ -4396,6 +4579,7 @@ uint depth & (offset_1 <= curr - windowLow ? 1 : 0) ) != 0 ) + { if (MEM_read32(ip) == MEM_read32(repMatch)) { /* repcode detected */ @@ -4421,6 +4605,7 @@ uint depth start = ip; } } + } } { @@ -4450,6 +4635,7 @@ uint depth break; } + } if (offBase > 3) { @@ -4499,6 +4685,7 @@ uint depth & (offset_2 <= repCurrent - windowLow ? 1 : 0) ) != 0 ) + { if (MEM_read32(ip) == MEM_read32(repMatch)) { /* repcode detected we should take it */ @@ -4516,6 +4703,7 @@ uint depth anchor = ip; continue; } + } break; } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLdm.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLdm.cs index eb6349798..db9050951 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLdm.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdLdm.cs @@ -100,7 +100,9 @@ private static nuint ZSTD_ldm_gear_feed( splits[*numSplits] = n; *numSplits += 1; if (*numSplits == 64) + { goto done; + } } } @@ -112,7 +114,9 @@ private static nuint ZSTD_ldm_gear_feed( splits[*numSplits] = n; *numSplits += 1; if (*numSplits == 64) + { goto done; + } } } @@ -124,7 +128,9 @@ private static nuint ZSTD_ldm_gear_feed( splits[*numSplits] = n; *numSplits += 1; if (*numSplits == 64) + { goto done; + } } } @@ -136,7 +142,9 @@ private static nuint ZSTD_ldm_gear_feed( splits[*numSplits] = n; *numSplits += 1; if (*numSplits == 64) + { goto done; + } } } } @@ -150,7 +158,9 @@ private static nuint ZSTD_ldm_gear_feed( splits[*numSplits] = n; *numSplits += 1; if (*numSplits == 64) + { goto done; + } } } @@ -226,7 +236,9 @@ private static void ZSTD_ldm_adjustParameters( { @params->minMatchLength = 64; if (cParams->strategy >= ZSTD_strategy.ZSTD_btultra) + { @params->minMatchLength /= 2; + } } if (@params->bucketSizeLog == 0) @@ -481,7 +493,10 @@ nuint srcSize ldmMatchCandidate_t* candidates = &ldmState->matchCandidates.e0; uint numSplits; if (srcSize < minMatchLength) + { return (nuint)(iend - anchor); + } + ZSTD_ldm_gear_init(&hashState, @params); ZSTD_ldm_gear_reset(&hashState, ip, minMatchLength); ip += minMatchLength; @@ -605,7 +620,10 @@ nuint srcSize { rawSeq* seq = rawSeqStore->seq + rawSeqStore->size; if (rawSeqStore->size == rawSeqStore->capacity) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_dstSize_tooSmall)); + } + seq->litLength = (uint)(split - backwardMatchLength - anchor); seq->matchLength = (uint)mLength; seq->offset = offset; @@ -636,9 +654,13 @@ private static void ZSTD_ldm_reduceTable(ldmEntry_t* table, uint size, uint redu for (u = 0; u < size; u++) { if (table[u].offset < reducerValue) + { table[u].offset = 0; + } else + { table[u].offset -= reducerValue; + } } } @@ -724,7 +746,10 @@ nuint srcSize chunkSize ); if (ERR_isError(newLeftoverSize)) + { return newLeftoverSize; + } + if (prevSize < sequences->size) { sequences->seq[prevSize].litLength += (uint)leftoverSize; @@ -909,7 +934,10 @@ nuint srcSize /* maybeSplitSequence updates rawSeqStore->pos */ rawSeq sequence = maybeSplitSequence(rawSeqStore, (uint)(iend - ip), minMatch); if (sequence.offset == 0) + { break; + } + assert(ip + sequence.litLength + sequence.matchLength <= iend); ZSTD_ldm_limitTableUpdate(ms, ip); ZSTD_ldm_fillFastTables(ms, ip); @@ -918,7 +946,10 @@ nuint srcSize nuint newLitLength = blockCompressor(ms, seqStore, rep, ip, sequence.litLength); ip += sequence.litLength; for (i = 3 - 1; i > 0; i--) + { rep[i] = rep[i - 1]; + } + rep[0] = sequence.offset; assert(sequence.offset > 0); ZSTD_storeSeq( diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdOpt.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdOpt.cs index 4b05bb17c..08efcf671 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdOpt.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdOpt.cs @@ -41,8 +41,11 @@ private static int ZSTD_compressedLiterals(optState_t* optPtr) private static void ZSTD_setBasePrices(optState_t* optPtr, int optLevel) { if (ZSTD_compressedLiterals(optPtr) != 0) + { optPtr->litSumBasePrice = optLevel != 0 ? ZSTD_fracWeight(optPtr->litSum) : ZSTD_bitWeight(optPtr->litSum); + } + optPtr->litLengthSumBasePrice = optLevel != 0 ? ZSTD_fracWeight(optPtr->litLengthSum) @@ -103,7 +106,10 @@ private static uint ZSTD_scaleStats(uint* table, uint lastEltIndex, uint logTarg uint factor = prevsum >> (int)logTarget; assert(logTarget < 30); if (factor <= 1) + { return prevsum; + } + return ZSTD_downscaleStats( table, lastEltIndex, @@ -409,7 +415,9 @@ int optLevel { uint ml; for (ml = 0; ml <= 52; ml++) + { optPtr->matchLengthFreq[ml] = 1; + } } optPtr->matchLengthSum = 52 + 1; @@ -422,7 +430,10 @@ int optLevel else { if (compressedLiterals != 0) + { optPtr->litSum = ZSTD_scaleStats(optPtr->litFreq, (1 << 8) - 1, 12); + } + optPtr->litLengthSum = ZSTD_scaleStats(optPtr->litLengthFreq, 35, 11); optPtr->matchLengthSum = ZSTD_scaleStats(optPtr->matchLengthFreq, 52, 11); optPtr->offCodeSum = ZSTD_scaleStats(optPtr->offCodeFreq, 31, 11); @@ -442,11 +453,20 @@ int optLevel ) { if (litLength == 0) + { return 0; + } + if (ZSTD_compressedLiterals(optPtr) == 0) + { return (litLength << 3) * (1 << 8); + } + if (optPtr->priceType == ZSTD_OptPrice_e.zop_predef) + { return litLength * 6 * (1 << 8); + } + { uint price = optPtr->litSumBasePrice * litLength; uint litPriceMax = optPtr->litSumBasePrice - (1 << 8); @@ -459,7 +479,10 @@ int optLevel ? ZSTD_fracWeight(optPtr->litFreq[literals[u]]) : ZSTD_bitWeight(optPtr->litFreq[literals[u]]); if (litPrice > litPriceMax) + { litPrice = litPriceMax; + } + price -= litPrice; } @@ -473,9 +496,15 @@ private static uint ZSTD_litLengthPrice(uint litLength, optState_t* optPtr, int { assert(litLength <= 1 << 17); if (optPtr->priceType == ZSTD_OptPrice_e.zop_predef) + { return optLevel != 0 ? ZSTD_fracWeight(litLength) : ZSTD_bitWeight(litLength); + } + if (litLength == 1 << 17) + { return (1 << 8) + ZSTD_litLengthPrice((1 << 17) - 1, optPtr, optLevel); + } + { uint llCode = ZSTD_LLcode(litLength); return (uint)(LL_bits[llCode] * (1 << 8)) @@ -507,8 +536,11 @@ int optLevel uint mlBase = matchLength - 3; assert(matchLength >= 3); if (optPtr->priceType == ZSTD_OptPrice_e.zop_predef) + { return (optLevel != 0 ? ZSTD_fracWeight(mlBase) : ZSTD_bitWeight(mlBase)) + (16 + offCode) * (1 << 8); + } + price = offCode * (1 << 8) + ( @@ -520,7 +552,10 @@ int optLevel ) ); if (optLevel < 2 && offCode >= 20) + { price += (offCode - 19) * 2 * (1 << 8); + } + { uint mlCode = ZSTD_MLcode(mlBase); price += @@ -553,7 +588,10 @@ uint matchLength { uint u; for (u = 0; u < litLength; u++) + { optPtr->litFreq[literals[u]] += 2; + } + optPtr->litSum += litLength * 2; } @@ -591,9 +629,13 @@ private static uint ZSTD_readMINMATCH(void* memPtr, uint length) return MEM_read32(memPtr); case 3: if (BitConverter.IsLittleEndian) + { return MEM_read32(memPtr) << 8; + } else + { return MEM_read32(memPtr) >> 8; + } } } @@ -695,14 +737,18 @@ int extDict prefixStart ); if (matchIndex + matchLength >= dictLimit) + { match = @base + matchIndex; + } } if (matchLength > bestLength) { bestLength = matchLength; if (matchLength > matchEndIdx - matchIndex) + { matchEndIdx = matchIndex + (uint)matchLength; + } } if (ip + matchLength == iend) @@ -742,7 +788,10 @@ int extDict { uint positions = 0; if (bestLength > 384) + { positions = 192 < (uint)(bestLength - 384) ? 192 : (uint)(bestLength - 384); + } + assert(matchEndIdx > curr + 8); return positions > matchEndIdx - (curr + 8) ? positions : matchEndIdx - (curr + 8); } @@ -996,7 +1045,9 @@ uint mls match = @base + matchIndex; #if DEBUG if (matchIndex >= dictLimit) + { assert(memcmp(match, ip, matchLength) == 0); + } #endif matchLength += ZSTD_count(ip + matchLength, match + matchLength, iLimit); } @@ -1012,14 +1063,19 @@ uint mls prefixStart ); if (matchIndex + matchLength >= dictLimit) + { match = @base + matchIndex; + } } if (matchLength > bestLength) { assert(matchEndIdx > matchIndex); if (matchLength > matchEndIdx - matchIndex) + { matchEndIdx = matchIndex + (uint)matchLength; + } + bestLength = matchLength; assert(curr - matchIndex > 0); matches[mnum].off = curr - matchIndex + 3; @@ -1028,7 +1084,10 @@ uint mls if (matchLength > 1 << 12 || ip + matchLength == iLimit) { if (dictMode == ZSTD_dictMode_e.ZSTD_dictMatchState) + { nbCompares = 0; + } + break; } } @@ -1086,12 +1145,18 @@ uint mls prefixStart ); if (dictMatchIndex + matchLength >= dmsHighLimit) + { match = @base + dictMatchIndex + dmsIndexDelta; + } + if (matchLength > bestLength) { matchIndex = dictMatchIndex + dmsIndexDelta; if (matchLength > matchEndIdx - matchIndex) + { matchEndIdx = matchIndex + (uint)matchLength; + } + bestLength = matchLength; assert(curr - matchIndex > 0); matches[mnum].off = curr - matchIndex + 3; @@ -1148,7 +1213,10 @@ uint mls ) == mls ); if (ip < ms->window.@base + ms->nextToUpdate) + { return 0; + } + ZSTD_updateTree_internal(ms, ip, iHighLimit, mls, dictMode); return ZSTD_insertBtAndGetAllMatches( matches, @@ -1851,7 +1919,9 @@ ZSTD_dictMode_e dictMode opt[cur + 1].litlen = 1; opt[cur + 1].price = with1literal; if (last_pos < cur + 1) + { last_pos = cur + 1; + } } } } @@ -1871,9 +1941,15 @@ ZSTD_dictMode_e dictMode } if (inr > ilimit) + { continue; + } + if (cur == last_pos) + { break; + } + if (optLevel == 0 && opt[cur + 1].price <= opt[cur].price + (1 << 8) / 2) { continue; @@ -1954,7 +2030,9 @@ ZSTD_dictMode_e dictMode else { if (optLevel == 0) + { break; + } } } } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdPresplit.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdPresplit.cs index e0d139218..0adf6c72a 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdPresplit.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdPresplit.cs @@ -15,7 +15,10 @@ private static uint hash2(void* p, uint hashLog) { assert(hashLog >= 8); if (hashLog == 8) + { return ((byte*)p)[0]; + } + assert(hashLog <= 10); return MEM_read16(p) * 0x9e3779b9 >> (int)(32 - hashLog); } @@ -220,7 +223,9 @@ nuint wkspSize { mergeEvents(&fpstats->pastEvents, &fpstats->newEvents); if (penalty > 0) + { penalty--; + } } } @@ -255,7 +260,10 @@ nuint wkspSize HIST_add(fpstats->newEvents.events, (sbyte*)blockStart + blockSize - 512, 512); fpstats->pastEvents.nbEvents = fpstats->newEvents.nbEvents = 512; if (compareFingerprints(&fpstats->pastEvents, &fpstats->newEvents, 0, 8) == 0) + { return blockSize; + } + HIST_add(middleEvents->events, (sbyte*)blockStart + blockSize / 2 - 512 / 2, 512); middleEvents->nbEvents = 512; { @@ -263,7 +271,10 @@ nuint wkspSize ulong distFromEnd = fpDistance(&fpstats->newEvents, middleEvents, 8); const ulong minDistance = 512 * 512 / 3; if (abs64((long)distFromBegin - (long)distFromEnd) < minDistance) + { return 64 * (1 << 10); + } + return (nuint)(distFromBegin > distFromEnd ? 32 * (1 << 10) : 96 * (1 << 10)); } } @@ -289,7 +300,10 @@ nuint wkspSize { assert(0 <= level && level <= 4); if (level == 0) + { return ZSTD_splitBlock_fromBorders(blockStart, blockSize, workspace, wkspSize); + } + return ZSTD_splitBlock_byChunks(blockStart, blockSize, level - 1, workspace, wkspSize); } } diff --git a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdmtCompress.cs b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdmtCompress.cs index 2a21c3238..701ed7306 100644 --- a/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdmtCompress.cs +++ b/src/SharpCompress/Compressors/ZStandard/Unsafe/ZstdmtCompress.cs @@ -10,7 +10,10 @@ public static unsafe partial class Methods private static void ZSTDMT_freeBufferPool(ZSTDMT_bufferPool_s* bufPool) { if (bufPool == null) + { return; + } + if (bufPool->buffers != null) { uint u; @@ -36,7 +39,10 @@ ZSTD_customMem cMem cMem ); if (bufPool == null) + { return null; + } + SynchronizationWrapper.Init(&bufPool->poolMutex); bufPool->buffers = (buffer_s*)ZSTD_customCalloc( maxNbBuffers * (uint)sizeof(buffer_s), @@ -64,7 +70,10 @@ private static nuint ZSTDMT_sizeof_bufferPool(ZSTDMT_bufferPool_s* bufPool) nuint totalBufferSize = 0; SynchronizationWrapper.Enter(&bufPool->poolMutex); for (u = 0; u < bufPool->totalBuffers; u++) + { totalBufferSize += bufPool->buffers[u].capacity; + } + SynchronizationWrapper.Exit(&bufPool->poolMutex); return poolSize + arraySize + totalBufferSize; } @@ -86,9 +95,15 @@ uint maxNbBuffers ) { if (srcBufPool == null) + { return null; + } + if (srcBufPool->totalBuffers >= maxNbBuffers) + { return srcBufPool; + } + { ZSTD_customMem cMem = srcBufPool->cMem; /* forward parameters */ @@ -97,7 +112,10 @@ uint maxNbBuffers ZSTDMT_freeBufferPool(srcBufPool); newBufPool = ZSTDMT_createBufferPool(maxNbBuffers, cMem); if (newBufPool == null) + { return newBufPool; + } + ZSTDMT_setBufferSize(newBufPool, bSize); return newBufPool; } @@ -139,7 +157,10 @@ private static buffer_s ZSTDMT_getBuffer(ZSTDMT_bufferPool_s* bufPool) private static void ZSTDMT_releaseBuffer(ZSTDMT_bufferPool_s* bufPool, buffer_s buf) { if (buf.start == null) + { return; + } + SynchronizationWrapper.Enter(&bufPool->poolMutex); if (bufPool->nbBuffers < bufPool->totalBuffers) { @@ -197,7 +218,10 @@ private static void ZSTDMT_setNbSeq(ZSTDMT_bufferPool_s* seqPool, nuint nbSeq) { ZSTDMT_bufferPool_s* seqPool = ZSTDMT_createBufferPool(nbWorkers, cMem); if (seqPool == null) + { return null; + } + ZSTDMT_setNbSeq(seqPool, 0); return seqPool; } @@ -219,13 +243,19 @@ uint nbWorkers private static void ZSTDMT_freeCCtxPool(ZSTDMT_CCtxPool* pool) { if (pool == null) + { return; + } + SynchronizationWrapper.Free(&pool->poolMutex); if (pool->cctxs != null) { int cid; for (cid = 0; cid < pool->totalCCtx; cid++) + { ZSTD_freeCCtx(pool->cctxs[cid]); + } + ZSTD_customFree(pool->cctxs, pool->cMem); } @@ -242,7 +272,10 @@ private static void ZSTDMT_freeCCtxPool(ZSTDMT_CCtxPool* pool) ); assert(nbWorkers > 0); if (cctxPool == null) + { return null; + } + SynchronizationWrapper.Init(&cctxPool->poolMutex); cctxPool->totalCCtx = nbWorkers; cctxPool->cctxs = (ZSTD_CCtx_s**)ZSTD_customCalloc( @@ -270,9 +303,15 @@ private static void ZSTDMT_freeCCtxPool(ZSTDMT_CCtxPool* pool) private static ZSTDMT_CCtxPool* ZSTDMT_expandCCtxPool(ZSTDMT_CCtxPool* srcPool, int nbWorkers) { if (srcPool == null) + { return null; + } + if (nbWorkers <= srcPool->totalCCtx) + { return srcPool; + } + { ZSTD_customMem cMem = srcPool->cMem; ZSTDMT_freeCCtxPool(srcPool); @@ -321,10 +360,15 @@ private static nuint ZSTDMT_sizeof_CCtxPool(ZSTDMT_CCtxPool* cctxPool) private static void ZSTDMT_releaseCCtx(ZSTDMT_CCtxPool* pool, ZSTD_CCtx_s* cctx) { if (cctx == null) + { return; + } + SynchronizationWrapper.Enter(&pool->poolMutex); if (pool->availCCtx < pool->totalCCtx) + { pool->cctxs[pool->availCCtx++] = cctx; + } else { ZSTD_freeCCtx(cctx); @@ -356,7 +400,10 @@ ZSTD_dictContentType_e dictContentType serialState->nextJobID = 0; if (@params.fParams.checksumFlag != 0) + { ZSTD_XXH64_reset(&serialState->xxhState, 0); + } + if (@params.ldmParams.enableLdm == ZSTD_paramSwitch_e.ZSTD_ps_enable) { ZSTD_customMem cMem = @params.customMem; @@ -388,7 +435,10 @@ ZSTD_dictContentType_e dictContentType serialState->ldmState.hashTable == null || serialState->ldmState.bucketOffsets == null ) + { return 1; + } + memset(serialState->ldmState.hashTable, 0, (uint)hashSize); memset(serialState->ldmState.bucketOffsets, 0, (uint)numBuckets); serialState->ldmState.loadedDictEnd = 0; @@ -482,7 +532,9 @@ uint jobID } if (serialState->@params.fParams.checksumFlag != 0 && src.size > 0) + { ZSTD_XXH64_update(&serialState->xxhState, src.start, src.size); + } } serialState->nextJobID++; @@ -571,7 +623,10 @@ private static void ZSTDMT_compressionJob(void* jobDescription) } if (job->jobID != 0) + { jobParams.fParams.checksumFlag = 0; + } + jobParams.ldmParams.enableLdm = ZSTD_paramSwitch_e.ZSTD_ps_disable; jobParams.nbWorkers = 0; ZSTDMT_serialState_genSequences(job->serial, &rawSeqStore, job->src, job->jobID); @@ -682,7 +737,9 @@ private static void ZSTDMT_compressionJob(void* jobDescription) int chunkNb; #if DEBUG if (sizeof(nuint) > sizeof(int)) + { assert(job->src.size < unchecked(2147483647 * chunkSize)); + } #endif assert(job->cSize == 0); for (chunkNb = 1; chunkNb < nbChunks; chunkNb++) @@ -755,7 +812,10 @@ private static void ZSTDMT_compressionJob(void* jobDescription) ZSTDMT_releaseCCtx(job->cctxPool, cctx); SynchronizationWrapper.Enter(&job->job_mutex); if (ERR_isError(job->cSize)) + { assert(lastCBlockSize == 0); + } + job->cSize += lastCBlockSize; job->consumed = job->src.size; SynchronizationWrapper.Pulse(&job->job_mutex); @@ -776,7 +836,10 @@ ZSTD_customMem cMem { uint jobNb; if (jobTable == null) + { return; + } + for (jobNb = 0; jobNb < nbJobs; jobNb++) { SynchronizationWrapper.Free(&jobTable[jobNb].job_mutex); @@ -802,7 +865,10 @@ ZSTD_customMem cMem ); int initError = 0; if (jobTable == null) + { return null; + } + *nbJobsPtr = nbJobs; for (jobNb = 0; jobNb < nbJobs; jobNb++) { @@ -829,7 +895,10 @@ private static nuint ZSTDMT_expandJobsTable(ZSTDMT_CCtx_s* mtctx, uint nbWorkers mtctx->jobIDMask = 0; mtctx->jobs = ZSTDMT_createJobsTable(&nbJobs, mtctx->cMem); if (mtctx->jobs == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + assert(nbJobs != 0 && (nbJobs & nbJobs - 1) == 0); mtctx->jobIDMask = nbJobs - 1; } @@ -859,16 +928,25 @@ private static nuint ZSTDMT_CCtxParam_setNbWorkers(ZSTD_CCtx_params_s* @params, uint nbJobs = nbWorkers + 2; int initError; if (nbWorkers < 1) + { return null; + } + nbWorkers = nbWorkers < (uint)(sizeof(void*) == 4 ? 64 : 256) ? nbWorkers : (uint)(sizeof(void*) == 4 ? 64 : 256); if (((cMem.customAlloc != null ? 1 : 0) ^ (cMem.customFree != null ? 1 : 0)) != 0) + { return null; + } + mtctx = (ZSTDMT_CCtx_s*)ZSTD_customCalloc((nuint)sizeof(ZSTDMT_CCtx_s), cMem); if (mtctx == null) + { return null; + } + ZSTDMT_CCtxParam_setNbWorkers(&mtctx->@params, nbWorkers); mtctx->cMem = cMem; mtctx->allJobsCompleted = 1; @@ -961,9 +1039,15 @@ private static void ZSTDMT_waitForAllJobsCompleted(ZSTDMT_CCtx_s* mtctx) private static nuint ZSTDMT_freeCCtx(ZSTDMT_CCtx_s* mtctx) { if (mtctx == null) + { return 0; + } + if (mtctx->providedFactory == 0) + { POOL_free(mtctx->factory); + } + ZSTDMT_releaseAllJobResources(mtctx); ZSTDMT_freeJobsTable(mtctx->jobs, mtctx->jobIDMask + 1, mtctx->cMem); ZSTDMT_freeBufferPool(mtctx->bufPool); @@ -972,7 +1056,10 @@ private static nuint ZSTDMT_freeCCtx(ZSTDMT_CCtx_s* mtctx) ZSTDMT_serialState_free(&mtctx->serial); ZSTD_freeCDict(mtctx->cdictLocal); if (mtctx->roundBuff.buffer != null) + { ZSTD_customFree(mtctx->roundBuff.buffer, mtctx->cMem); + } + ZSTD_customFree(mtctx, mtctx->cMem); return 0; } @@ -980,7 +1067,10 @@ private static nuint ZSTDMT_freeCCtx(ZSTDMT_CCtx_s* mtctx) private static nuint ZSTDMT_sizeof_CCtx(ZSTDMT_CCtx_s* mtctx) { if (mtctx == null) + { return 0; + } + return (nuint)sizeof(ZSTDMT_CCtx_s) + POOL_sizeof(mtctx->factory) + ZSTDMT_sizeof_bufferPool(mtctx->bufPool) @@ -996,7 +1086,10 @@ private static nuint ZSTDMT_sizeof_CCtx(ZSTDMT_CCtx_s* mtctx) private static nuint ZSTDMT_resize(ZSTDMT_CCtx_s* mtctx, uint nbWorkers) { if (POOL_resize(mtctx->factory, nbWorkers) != 0) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + { nuint err_code = ZSTDMT_expandJobsTable(mtctx, nbWorkers); if (ERR_isError(err_code)) @@ -1007,13 +1100,22 @@ private static nuint ZSTDMT_resize(ZSTDMT_CCtx_s* mtctx, uint nbWorkers) mtctx->bufPool = ZSTDMT_expandBufferPool(mtctx->bufPool, 2 * nbWorkers + 3); if (mtctx->bufPool == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + mtctx->cctxPool = ZSTDMT_expandCCtxPool(mtctx->cctxPool, (int)nbWorkers); if (mtctx->cctxPool == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + mtctx->seqPool = ZSTDMT_expandSeqPool(mtctx->seqPool, nbWorkers); if (mtctx->seqPool == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + ZSTDMT_CCtxParam_setNbWorkers(&mtctx->@params, nbWorkers); return 0; } @@ -1094,7 +1196,10 @@ private static nuint ZSTDMT_toFlushNow(ZSTDMT_CCtx_s* mtctx) uint jobID = mtctx->doneJobID; assert(jobID <= mtctx->nextJobID); if (jobID == mtctx->nextJobID) + { return 0; + } + { uint wJobID = jobID & mtctx->jobIDMask; ZSTDMT_jobDescription* jobPtr = &mtctx->jobs[wJobID]; @@ -1168,7 +1273,10 @@ private static int ZSTDMT_overlapLog(int ovlog, ZSTD_strategy strat) { assert(0 <= ovlog && ovlog <= 9); if (ovlog == 0) + { return ZSTDMT_overlapLog_default(strat); + } + return ovlog; } @@ -1218,9 +1326,15 @@ ulong pledgedSrcSize } if (@params.jobSize != 0 && @params.jobSize < 512 * (1 << 10)) + { @params.jobSize = 512 * (1 << 10); + } + if (@params.jobSize > (nuint)(MEM_32bits ? 512 * (1 << 20) : 1024 * (1 << 20))) + { @params.jobSize = (nuint)(MEM_32bits ? 512 * (1 << 20) : 1024 * (1 << 20)); + } + if (mtctx->allJobsCompleted == 0) { ZSTDMT_waitForAllJobsCompleted(mtctx); @@ -1243,7 +1357,9 @@ ulong pledgedSrcSize ); mtctx->cdict = mtctx->cdictLocal; if (mtctx->cdictLocal == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } } else { @@ -1274,7 +1390,10 @@ ulong pledgedSrcSize } if (mtctx->targetSectionSize < mtctx->targetPrefixSize) + { mtctx->targetSectionSize = mtctx->targetPrefixSize; + } + ZSTDMT_setBufferSize(mtctx->bufPool, ZSTD_compressBound(mtctx->targetSectionSize)); { /* If ldm is enabled we need windowSize space. */ @@ -1297,7 +1416,10 @@ ulong pledgedSrcSize if (mtctx->roundBuff.capacity < capacity) { if (mtctx->roundBuff.buffer != null) + { ZSTD_customFree(mtctx->roundBuff.buffer, mtctx->cMem); + } + mtctx->roundBuff.buffer = (byte*)ZSTD_customMalloc(capacity, mtctx->cMem); if (mtctx->roundBuff.buffer == null) { @@ -1341,7 +1463,9 @@ ulong pledgedSrcSize ); mtctx->cdict = mtctx->cdictLocal; if (mtctx->cdictLocal == null) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } } } else @@ -1360,7 +1484,10 @@ ulong pledgedSrcSize dictContentType ) != 0 ) + { return unchecked((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)); + } + return 0; } @@ -1566,20 +1693,37 @@ ZSTD_EndDirective end } if (cSize > mtctx->jobs[wJobID].dstFlushed) + { return cSize - mtctx->jobs[wJobID].dstFlushed; + } + if (srcSize > srcConsumed) + { return 1; + } } if (mtctx->doneJobID < mtctx->nextJobID) + { return 1; + } + if (mtctx->jobReady != 0) + { return 1; + } + if (mtctx->inBuff.filled > 0) + { return 1; + } + mtctx->allJobsCompleted = mtctx->frameEnded; if (end == ZSTD_EndDirective.ZSTD_e_end) + { return mtctx->frameEnded == 0 ? 1U : 0U; + } + return 0; } @@ -1597,7 +1741,10 @@ private static Range ZSTDMT_getInputDataInUse(ZSTDMT_CCtx_s* mtctx) nuint roundBuffCapacity = mtctx->roundBuff.capacity; nuint nbJobs1stRoundMin = roundBuffCapacity / mtctx->targetSectionSize; if (lastJobID < nbJobs1stRoundMin) + { return kNullRange; + } + for (jobID = firstJobID; jobID < lastJobID; ++jobID) { uint wJobID = jobID & mtctx->jobIDMask; @@ -1629,12 +1776,18 @@ private static int ZSTDMT_isOverlapped(buffer_s buffer, Range range) byte* bufferStart = (byte*)buffer.start; byte* rangeStart = (byte*)range.start; if (rangeStart == null || bufferStart == null) + { return 0; + } + { byte* bufferEnd = bufferStart + buffer.capacity; byte* rangeEnd = rangeStart + range.size; if (bufferStart == bufferEnd || rangeStart == rangeEnd) + { return 0; + } + return bufferStart < rangeEnd && rangeStart < bufferEnd ? 1 : 0; } } @@ -1736,11 +1889,20 @@ private static SyncPoint findSynchronizationPoint(ZSTDMT_CCtx_s* mtctx, ZSTD_inB : mtctx->targetSectionSize - mtctx->inBuff.filled; syncPoint.flush = 0; if (mtctx->@params.rsyncable == 0) + { return syncPoint; + } + if (mtctx->inBuff.filled + input.size - input.pos < 1 << 17) + { return syncPoint; + } + if (mtctx->inBuff.filled + syncPoint.toLoad < 32) + { return syncPoint; + } + if (mtctx->inBuff.filled < 1 << 17) { pos = (1 << 17) - mtctx->inBuff.filled; @@ -1796,7 +1958,10 @@ private static nuint ZSTDMT_nextInputSizeHint(ZSTDMT_CCtx_s* mtctx) { nuint hintInSize = mtctx->targetSectionSize - mtctx->inBuff.filled; if (hintInSize == 0) + { hintInSize = mtctx->targetSectionSize; + } + return hintInSize; } @@ -1887,7 +2052,10 @@ ZSTD_EndDirective endOp endOp ); if (input->pos < input->size) + { return remainingToFlush > 1 ? remainingToFlush : 1; + } + return remainingToFlush; } } diff --git a/src/SharpCompress/Compressors/ZStandard/UnsafeHelper.cs b/src/SharpCompress/Compressors/ZStandard/UnsafeHelper.cs index a73023c4f..34325f70e 100644 --- a/src/SharpCompress/Compressors/ZStandard/UnsafeHelper.cs +++ b/src/SharpCompress/Compressors/ZStandard/UnsafeHelper.cs @@ -78,7 +78,9 @@ public static void free(void* ptr) var destination = (T*)malloc(size); #endif fixed (void* source = &array[0]) + { System.Runtime.CompilerServices.Unsafe.CopyBlockUnaligned(destination, source, size); + } return destination; } @@ -88,7 +90,9 @@ public static void free(void* ptr) public static void assert(bool condition, string? message = null) { if (!condition) + { throw new ArgumentException(message ?? "assert failed"); + } } [MethodImpl(MethodImplOptions.AggressiveInlining)] diff --git a/src/SharpCompress/Compressors/ZStandard/ZStandardStream.Async.cs b/src/SharpCompress/Compressors/ZStandard/ZStandardStream.Async.cs new file mode 100644 index 000000000..abef7d421 --- /dev/null +++ b/src/SharpCompress/Compressors/ZStandard/ZStandardStream.Async.cs @@ -0,0 +1,31 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.IO; + +namespace SharpCompress.Compressors.ZStandard; + +internal partial class ZStandardStream +{ + internal static async ValueTask IsZStandardAsync( + Stream stream, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + var buffer = new byte[4]; + var bytesRead = await stream.ReadAsync(buffer, 0, 4, cancellationToken); + if (bytesRead < 4) + { + return false; + } + + var magic = BitConverter.ToUInt32(buffer, 0); + if (ZstandardConstants.MAGIC != magic) + { + return false; + } + return true; + } +} diff --git a/src/SharpCompress/Compressors/ZStandard/ZStandardStream.cs b/src/SharpCompress/Compressors/ZStandard/ZStandardStream.cs index d465c8355..944cdcc95 100644 --- a/src/SharpCompress/Compressors/ZStandard/ZStandardStream.cs +++ b/src/SharpCompress/Compressors/ZStandard/ZStandardStream.cs @@ -3,12 +3,13 @@ using System.IO; using System.Linq; using System.Text; +using System.Threading; using System.Threading.Tasks; using SharpCompress.IO; namespace SharpCompress.Compressors.ZStandard; -internal class ZStandardStream : DecompressionStream, IStreamStack +internal partial class ZStandardStream : DecompressionStream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } diff --git a/src/SharpCompress/Factories/AceFactory.cs b/src/SharpCompress/Factories/AceFactory.cs index 6691f1321..aa0ed79e2 100644 --- a/src/SharpCompress/Factories/AceFactory.cs +++ b/src/SharpCompress/Factories/AceFactory.cs @@ -23,29 +23,26 @@ public override IEnumerable GetSupportedExtensions() yield return "ace"; } - public override bool IsArchive( + public override bool IsArchive(Stream stream, string? password = null) => + AceHeader.IsArchive(stream); + + public override ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => AceHeader.IsArchive(stream); + CancellationToken cancellationToken = default + ) => AceHeader.IsArchiveAsync(stream, cancellationToken); public IReader OpenReader(Stream stream, ReaderOptions? options) => AceReader.OpenReader(stream, options); - public IAsyncReader OpenAsyncReader( + public ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncReader)AceReader.OpenReader(stream, options); + return new((IAsyncReader)AceReader.OpenReader(stream, options)); } - - public override ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); } } diff --git a/src/SharpCompress/Factories/ArcFactory.cs b/src/SharpCompress/Factories/ArcFactory.cs index 9ed581ae4..593fb03e9 100644 --- a/src/SharpCompress/Factories/ArcFactory.cs +++ b/src/SharpCompress/Factories/ArcFactory.cs @@ -1,4 +1,5 @@ using System; +using System.Buffers; using System.Collections.Generic; using System.IO; using System.Linq; @@ -24,11 +25,7 @@ public override IEnumerable GetSupportedExtensions() yield return "arc"; } - public override bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) + public override bool IsArchive(Stream stream, string? password = null) { //You may have to use some(paranoid) checks to ensure that you actually are //processing an ARC file, since other archivers also adopted the idea of putting @@ -36,28 +33,53 @@ public override bool IsArchive( //Hyper - archive, check the next two bytes for "HP" or "ST"(or look below for //"HYP").Also the ZOO archiver also does put a 01Ah at the start of the file, //see the ZOO entry below. - var bytes = new byte[2]; - stream.Read(bytes, 0, 2); - return bytes[0] == 0x1A && bytes[1] < 10; //rather thin, but this is all we have + var buffer = ArrayPool.Shared.Rent(2); + try + { + stream.ReadExact(buffer, 0, 2); + return buffer[0] == 0x1A && buffer[1] < 10; //rather thin, but this is all we have + } + finally + { + ArrayPool.Shared.Return(buffer); + } } public IReader OpenReader(Stream stream, ReaderOptions? options) => ArcReader.OpenReader(stream, options); - public IAsyncReader OpenAsyncReader( + public ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncReader)ArcReader.OpenReader(stream, options); + return new((IAsyncReader)ArcReader.OpenReader(stream, options)); } - public override ValueTask IsArchiveAsync( + public override async ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); + CancellationToken cancellationToken = default + ) + { + //You may have to use some(paranoid) checks to ensure that you actually are + //processing an ARC file, since other archivers also adopted the idea of putting + //a 01Ah byte at offset 0, namely the Hyper archiver. To check if you have a + //Hyper - archive, check the next two bytes for "HP" or "ST"(or look below for + //"HYP").Also the ZOO archiver also does put a 01Ah at the start of the file, + //see the ZOO entry below. + var buffer = ArrayPool.Shared.Rent(2); + try + { + await stream.ReadExactAsync(buffer, 0, 2, cancellationToken); + return buffer[0] == 0x1A && buffer[1] < 10; //rather thin, but this is all we have + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } } } diff --git a/src/SharpCompress/Factories/ArjFactory.cs b/src/SharpCompress/Factories/ArjFactory.cs index c58314d29..1377407bd 100644 --- a/src/SharpCompress/Factories/ArjFactory.cs +++ b/src/SharpCompress/Factories/ArjFactory.cs @@ -23,32 +23,26 @@ public override IEnumerable GetSupportedExtensions() yield return "arj"; } - public override bool IsArchive( + public override bool IsArchive(Stream stream, string? password = null) => + ArjHeader.IsArchive(stream); + + public override ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) - { - return ArjHeader.IsArchive(stream); - } + CancellationToken cancellationToken = default + ) => ArjHeader.IsArchiveAsync(stream, cancellationToken); public IReader OpenReader(Stream stream, ReaderOptions? options) => ArjReader.OpenReader(stream, options); - public IAsyncReader OpenAsyncReader( + public ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncReader)ArjReader.OpenReader(stream, options); + return new((IAsyncReader)ArjReader.OpenReader(stream, options)); } - - public override ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); } } diff --git a/src/SharpCompress/Factories/Factory.cs b/src/SharpCompress/Factories/Factory.cs index cd6da6a78..075863e35 100644 --- a/src/SharpCompress/Factories/Factory.cs +++ b/src/SharpCompress/Factories/Factory.cs @@ -16,12 +16,12 @@ static Factory() { RegisterFactory(new ZipFactory()); RegisterFactory(new RarFactory()); - RegisterFactory(new SevenZipFactory()); + RegisterFactory(new TarFactory()); //put tar before most RegisterFactory(new GZipFactory()); - RegisterFactory(new TarFactory()); RegisterFactory(new ArcFactory()); RegisterFactory(new ArjFactory()); RegisterFactory(new AceFactory()); + RegisterFactory(new SevenZipFactory()); } private static readonly HashSet _factories = new(); @@ -53,29 +53,13 @@ public static void RegisterFactory(Factory factory) public abstract IEnumerable GetSupportedExtensions(); /// - public abstract bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ); + public abstract bool IsArchive(Stream stream, string? password = null); public abstract ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ); - - /// - public virtual ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize, CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return new(IsArchive(stream, password, bufferSize)); - } + ); /// public virtual FileInfo? GetFilePart(int index, FileInfo part1) => null; @@ -102,7 +86,7 @@ out IReader? reader { long pos = ((IStreamStack)stream).GetPosition(); - if (IsArchive(stream, options.Password, options.BufferSize)) + if (IsArchive(stream, options.Password)) { ((IStreamStack)stream).StackSeek(pos); reader = readerFactory.OpenReader(stream, options); @@ -112,31 +96,4 @@ out IReader? reader return false; } - - internal virtual async ValueTask<(bool, IAsyncReader?)> TryOpenReaderAsync( - SharpCompressStream stream, - ReaderOptions options, - CancellationToken cancellationToken - ) - { - if (this is IReaderFactory readerFactory) - { - long pos = ((IStreamStack)stream).GetPosition(); - - if ( - await IsArchiveAsync( - stream, - options.Password, - options.BufferSize, - cancellationToken - ) - ) - { - ((IStreamStack)stream).StackSeek(pos); - return (true, readerFactory.OpenAsyncReader(stream, options, cancellationToken)); - } - } - - return (false, null); - } } diff --git a/src/SharpCompress/Factories/GZipFactory.cs b/src/SharpCompress/Factories/GZipFactory.cs index 6e92a90d6..fe90c391f 100644 --- a/src/SharpCompress/Factories/GZipFactory.cs +++ b/src/SharpCompress/Factories/GZipFactory.cs @@ -42,17 +42,13 @@ public override IEnumerable GetSupportedExtensions() } /// - public override bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => GZipArchive.IsGZipFile(stream); + public override bool IsArchive(Stream stream, string? password = null) => + GZipArchive.IsGZipFile(stream); /// public override ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize, CancellationToken cancellationToken = default ) => GZipArchive.IsGZipFileAsync(stream, cancellationToken); @@ -68,22 +64,9 @@ public IArchive OpenArchive(Stream stream, ReaderOptions? readerOptions = null) public IAsyncArchive OpenAsyncArchive(Stream stream, ReaderOptions? readerOptions = null) => (IAsyncArchive)OpenArchive(stream, readerOptions); - public override ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); - /// - public IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfo, readerOptions); - } + public IAsyncArchive OpenAsyncArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => + (IAsyncArchive)OpenArchive(fileInfo, readerOptions); #endregion @@ -157,14 +140,14 @@ public IReader OpenReader(Stream stream, ReaderOptions? options) => GZipReader.OpenReader(stream, options); /// - public IAsyncReader OpenAsyncReader( + public ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncReader)GZipReader.OpenReader(stream, options); + return new((IAsyncReader)GZipReader.OpenReader(stream, options)); } /// diff --git a/src/SharpCompress/Factories/IFactory.cs b/src/SharpCompress/Factories/IFactory.cs index a9dd4f5ac..2f0b1ab03 100644 --- a/src/SharpCompress/Factories/IFactory.cs +++ b/src/SharpCompress/Factories/IFactory.cs @@ -38,23 +38,17 @@ public interface IFactory /// /// A stream, pointing to the beginning of the archive. /// optional password - bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ); + bool IsArchive(Stream stream, string? password = null); /// /// Returns true if the stream represents an archive of the format defined by this type asynchronously. /// /// A stream, pointing to the beginning of the archive. /// optional password - /// buffer size for reading /// cancellation token ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize, CancellationToken cancellationToken = default ); diff --git a/src/SharpCompress/Factories/RarFactory.cs b/src/SharpCompress/Factories/RarFactory.cs index 40f9216c2..11fe6cf81 100644 --- a/src/SharpCompress/Factories/RarFactory.cs +++ b/src/SharpCompress/Factories/RarFactory.cs @@ -31,11 +31,15 @@ public override IEnumerable GetSupportedExtensions() } /// - public override bool IsArchive( + public override bool IsArchive(Stream stream, string? password = null) => + RarArchive.IsRarFile(stream); + + /// + public override ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => RarArchive.IsRarFile(stream); + CancellationToken cancellationToken = default + ) => RarArchive.IsRarFileAsync(stream, cancellationToken: cancellationToken); /// public override FileInfo? GetFilePart(int index, FileInfo part1) => @@ -58,21 +62,8 @@ public IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? readerOptions = nu RarArchive.OpenArchive(fileInfo, readerOptions); /// - public IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfo, readerOptions); - } - - public override ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); + public IAsyncArchive OpenAsyncArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => + (IAsyncArchive)OpenArchive(fileInfo, readerOptions); #endregion @@ -116,14 +107,14 @@ public IReader OpenReader(Stream stream, ReaderOptions? options) => RarReader.OpenReader(stream, options); /// - public IAsyncReader OpenAsyncReader( + public ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncReader)RarReader.OpenReader(stream, options); + return new((IAsyncReader)RarReader.OpenReader(stream, options)); } #endregion diff --git a/src/SharpCompress/Factories/SevenZipFactory.cs b/src/SharpCompress/Factories/SevenZipFactory.cs index c2ea69f16..a371cce1f 100644 --- a/src/SharpCompress/Factories/SevenZipFactory.cs +++ b/src/SharpCompress/Factories/SevenZipFactory.cs @@ -30,11 +30,15 @@ public override IEnumerable GetSupportedExtensions() } /// - public override bool IsArchive( + public override bool IsArchive(Stream stream, string? password = null) => + SevenZipArchive.IsSevenZipFile(stream); + + /// + public override ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => SevenZipArchive.IsSevenZipFile(stream); + CancellationToken cancellationToken = default + ) => SevenZipArchive.IsSevenZipFileAsync(stream, cancellationToken); #endregion @@ -46,28 +50,15 @@ public IArchive OpenArchive(Stream stream, ReaderOptions? readerOptions = null) /// public IAsyncArchive OpenAsyncArchive(Stream stream, ReaderOptions? readerOptions = null) => - (IAsyncArchive)OpenArchive(stream, readerOptions); + SevenZipArchive.OpenAsyncArchive(stream, readerOptions, CancellationToken.None); /// public IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => SevenZipArchive.OpenArchive(fileInfo, readerOptions); /// - public IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfo, readerOptions); - } - - public override ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); + public IAsyncArchive OpenAsyncArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => + SevenZipArchive.OpenAsyncArchive(fileInfo, readerOptions, CancellationToken.None); #endregion @@ -83,7 +74,7 @@ public IArchive OpenArchive( public IAsyncArchive OpenAsyncArchive( IReadOnlyList streams, ReaderOptions? readerOptions = null - ) => (IAsyncArchive)OpenArchive(streams, readerOptions); + ) => SevenZipArchive.OpenAsyncArchive(streams, readerOptions, CancellationToken.None); /// public IArchive OpenArchive( @@ -96,11 +87,7 @@ public IAsyncArchive OpenAsyncArchive( IReadOnlyList fileInfos, ReaderOptions? readerOptions = null, CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfos, readerOptions); - } + ) => SevenZipArchive.OpenAsyncArchive(fileInfos, readerOptions, cancellationToken); #endregion diff --git a/src/SharpCompress/Factories/TarFactory.cs b/src/SharpCompress/Factories/TarFactory.cs index 3ba7687e2..0170a3f79 100644 --- a/src/SharpCompress/Factories/TarFactory.cs +++ b/src/SharpCompress/Factories/TarFactory.cs @@ -1,25 +1,15 @@ -using System; using System.Collections.Generic; using System.IO; -using System.Linq; using System.Threading; using System.Threading.Tasks; using SharpCompress.Archives; using SharpCompress.Archives.Tar; using SharpCompress.Common; -using SharpCompress.Compressors; -using SharpCompress.Compressors.BZip2; -using SharpCompress.Compressors.Deflate; -using SharpCompress.Compressors.LZMA; -using SharpCompress.Compressors.Lzw; -using SharpCompress.Compressors.Xz; -using SharpCompress.Compressors.ZStandard; using SharpCompress.IO; using SharpCompress.Readers; using SharpCompress.Readers.Tar; using SharpCompress.Writers; using SharpCompress.Writers.Tar; -using GZipArchive = SharpCompress.Archives.GZip.GZipArchive; namespace SharpCompress.Factories; @@ -45,7 +35,7 @@ public class TarFactory /// public override IEnumerable GetSupportedExtensions() { - foreach (var testOption in compressionOptions) + foreach (var testOption in TarWrapper.Wrappers) { foreach (var ext in testOption.KnownExtensions) { @@ -55,17 +45,54 @@ public override IEnumerable GetSupportedExtensions() } /// - public override bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => TarArchive.IsTarFile(stream); + public override bool IsArchive(Stream stream, string? password = null) + { + var rewindableStream = new SharpCompressStream(stream); + long pos = rewindableStream.GetPosition(); + foreach (var wrapper in TarWrapper.Wrappers) + { + rewindableStream.StackSeek(pos); + if (wrapper.IsMatch(rewindableStream)) + { + rewindableStream.StackSeek(pos); + var decompressedStream = wrapper.CreateStream(rewindableStream); + if (TarArchive.IsTarFile(decompressedStream)) + { + rewindableStream.StackSeek(pos); + return true; + } + } + } - public override ValueTask IsArchiveAsync( + return false; + } + + /// + public override async ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); + CancellationToken cancellationToken = default + ) + { + var rewindableStream = new SharpCompressStream(stream); + long pos = rewindableStream.GetPosition(); + foreach (var wrapper in TarWrapper.Wrappers) + { + rewindableStream.StackSeek(pos); + if (await wrapper.IsMatchAsync(rewindableStream, cancellationToken)) + { + rewindableStream.StackSeek(pos); + var decompressedStream = wrapper.CreateStream(rewindableStream); + if (await TarArchive.IsTarFileAsync(decompressedStream, cancellationToken)) + { + rewindableStream.StackSeek(pos); + return true; + } + } + } + + return false; + } #endregion @@ -84,15 +111,8 @@ public IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? readerOptions = nu TarArchive.OpenArchive(fileInfo, readerOptions); /// - public IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfo, readerOptions); - } + public IAsyncArchive OpenAsyncArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => + (IAsyncArchive)OpenArchive(fileInfo, readerOptions); #endregion @@ -131,161 +151,54 @@ public IAsyncArchive OpenAsyncArchive( #region IReaderFactory - - protected class TestOption - { - public readonly CompressionType Type; - public readonly Func CanHandle; - public readonly bool WrapInSharpCompressStream; - - public readonly Func CreateStream; - - public readonly IEnumerable KnownExtensions; - - public TestOption( - CompressionType Type, - Func CanHandle, - Func CreateStream, - IEnumerable KnownExtensions, - bool WrapInSharpCompressStream = true - ) - { - this.Type = Type; - this.CanHandle = CanHandle; - this.WrapInSharpCompressStream = WrapInSharpCompressStream; - this.CreateStream = CreateStream; - this.KnownExtensions = KnownExtensions; - } - } - - // https://en.wikipedia.org/wiki/Tar_(computing)#Suffixes_for_compressed_files - protected TestOption[] compressionOptions = - [ - new(CompressionType.None, (stream) => true, (stream) => stream, ["tar"], false), // We always do a test for IsTarFile later - new( - CompressionType.BZip2, - BZip2Stream.IsBZip2, - (stream) => new BZip2Stream(stream, CompressionMode.Decompress, false), - ["tar.bz2", "tb2", "tbz", "tbz2", "tz2"] - ), - new( - CompressionType.GZip, - GZipArchive.IsGZipFile, - (stream) => new GZipStream(stream, CompressionMode.Decompress), - ["tar.gz", "taz", "tgz"] - ), - new( - CompressionType.ZStandard, - ZStandardStream.IsZStandard, - (stream) => new ZStandardStream(stream), - ["tar.zst", "tar.zstd", "tzst", "tzstd"] - ), - new( - CompressionType.LZip, - LZipStream.IsLZipFile, - (stream) => new LZipStream(stream, CompressionMode.Decompress), - ["tar.lz"] - ), - new( - CompressionType.Xz, - XZStream.IsXZStream, - (stream) => new XZStream(stream), - ["tar.xz", "txz"], - false - ), - new( - CompressionType.Lzw, - LzwStream.IsLzwStream, - (stream) => new LzwStream(stream), - ["tar.Z", "tZ", "taZ"], - false - ), - ]; - /// - internal override bool TryOpenReader( - SharpCompressStream rewindableStream, - ReaderOptions options, - out IReader? reader - ) + public IReader OpenReader(Stream stream, ReaderOptions? options) { - reader = null; - long pos = ((IStreamStack)rewindableStream).GetPosition(); - TestOption? testedOption = null; - if (!string.IsNullOrWhiteSpace(options.ExtensionHint)) + options ??= new ReaderOptions(); + var rewindableStream = new SharpCompressStream(stream); + long pos = rewindableStream.GetPosition(); + foreach (var wrapper in TarWrapper.Wrappers) { - testedOption = compressionOptions.FirstOrDefault(a => - a.KnownExtensions.Contains( - options.ExtensionHint, - StringComparer.CurrentCultureIgnoreCase - ) - ); - if (testedOption != null) + rewindableStream.StackSeek(pos); + if (wrapper.IsMatch(rewindableStream)) { - reader = TryOption(rewindableStream, options, pos, testedOption); - if (reader != null) + rewindableStream.StackSeek(pos); + var decompressedStream = wrapper.CreateStream(rewindableStream); + if (TarArchive.IsTarFile(decompressedStream)) { - return true; + rewindableStream.StackSeek(pos); + return new TarReader(rewindableStream, options, wrapper.CompressionType); } } } - - foreach (var testOption in compressionOptions) - { - if (testedOption == testOption) - { - continue; // Already tested above - } - ((IStreamStack)rewindableStream).StackSeek(pos); - reader = TryOption(rewindableStream, options, pos, testOption); - if (reader != null) - { - return true; - } - } - - return false; + throw new InvalidFormatException("Not a tar file."); } - private static IReader? TryOption( - SharpCompressStream rewindableStream, - ReaderOptions options, - long pos, - TestOption testOption - ) - { - if (testOption.CanHandle(rewindableStream)) - { - ((IStreamStack)rewindableStream).StackSeek(pos); - var inStream = rewindableStream; - if (testOption.WrapInSharpCompressStream) - { - inStream = SharpCompressStream.Create(rewindableStream, leaveOpen: true); - } - var testStream = testOption.CreateStream(rewindableStream); - - if (TarArchive.IsTarFile(testStream)) - { - ((IStreamStack)rewindableStream).StackSeek(pos); - return new TarReader(rewindableStream, options, testOption.Type); - } - } - - return null; - } - - /// - public IReader OpenReader(Stream stream, ReaderOptions? options) => - TarReader.OpenReader(stream, options); - /// - public IAsyncReader OpenAsyncReader( + public async ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); + options ??= new ReaderOptions(); + var rewindableStream = new SharpCompressStream(stream); + long pos = rewindableStream.GetPosition(); + foreach (var wrapper in TarWrapper.Wrappers) + { + rewindableStream.StackSeek(pos); + if (await wrapper.IsMatchAsync(rewindableStream, cancellationToken)) + { + rewindableStream.StackSeek(pos); + var decompressedStream = wrapper.CreateStream(rewindableStream); + if (await TarArchive.IsTarFileAsync(decompressedStream, cancellationToken)) + { + rewindableStream.StackSeek(pos); + return new TarReader(rewindableStream, options, wrapper.CompressionType); + } + } + } return (IAsyncReader)TarReader.OpenReader(stream, options); } diff --git a/src/SharpCompress/Factories/TarWrapper.cs b/src/SharpCompress/Factories/TarWrapper.cs new file mode 100644 index 000000000..640a34d5f --- /dev/null +++ b/src/SharpCompress/Factories/TarWrapper.cs @@ -0,0 +1,92 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Archives.GZip; +using SharpCompress.Common; +using SharpCompress.Compressors; +using SharpCompress.Compressors.BZip2; +using SharpCompress.Compressors.Deflate; +using SharpCompress.Compressors.LZMA; +using SharpCompress.Compressors.Lzw; +using SharpCompress.Compressors.Xz; +using SharpCompress.Compressors.ZStandard; + +namespace SharpCompress.Factories; + +public class TarWrapper( + CompressionType type, + Func canHandle, + Func> canHandleAsync, + Func createStream, + IEnumerable knownExtensions, + bool wrapInSharpCompressStream = true +) +{ + public CompressionType CompressionType { get; } = type; + public Func IsMatch { get; } = canHandle; + public Func> IsMatchAsync { get; } = canHandleAsync; + public bool WrapInSharpCompressStream { get; } = wrapInSharpCompressStream; + + public Func CreateStream { get; } = createStream; + + public IEnumerable KnownExtensions { get; } = knownExtensions; + + // https://en.wikipedia.org/wiki/Tar_(computing)#Suffixes_for_compressed_files + public static TarWrapper[] Wrappers { get; } = + [ + new( + CompressionType.None, + (_) => true, + (_, _) => new ValueTask(true), + (stream) => stream, + ["tar"], + false + ), // We always do a test for IsTarFile later + new( + CompressionType.BZip2, + BZip2Stream.IsBZip2, + BZip2Stream.IsBZip2Async, + (stream) => BZip2Stream.Create(stream, CompressionMode.Decompress, false), + ["tar.bz2", "tb2", "tbz", "tbz2", "tz2"] + ), + new( + CompressionType.GZip, + GZipArchive.IsGZipFile, + GZipArchive.IsGZipFileAsync, + (stream) => new GZipStream(stream, CompressionMode.Decompress), + ["tar.gz", "taz", "tgz"] + ), + new( + CompressionType.ZStandard, + ZStandardStream.IsZStandard, + ZStandardStream.IsZStandardAsync, + (stream) => new ZStandardStream(stream), + ["tar.zst", "tar.zstd", "tzst", "tzstd"] + ), + new( + CompressionType.LZip, + LZipStream.IsLZipFile, + LZipStream.IsLZipFileAsync, + (stream) => new LZipStream(stream, CompressionMode.Decompress), + ["tar.lz"] + ), + new( + CompressionType.Xz, + XZStream.IsXZStream, + XZStream.IsXZStreamAsync, + (stream) => new XZStream(stream), + ["tar.xz", "txz"], + false + ), + new( + CompressionType.Lzw, + LzwStream.IsLzwStream, + LzwStream.IsLzwStreamAsync, + (stream) => new LzwStream(stream), + ["tar.Z", "tZ", "taZ"], + false + ), + ]; +} diff --git a/src/SharpCompress/Factories/ZStandardFactory.cs b/src/SharpCompress/Factories/ZStandardFactory.cs index d534a8bb3..e45b24540 100644 --- a/src/SharpCompress/Factories/ZStandardFactory.cs +++ b/src/SharpCompress/Factories/ZStandardFactory.cs @@ -3,6 +3,7 @@ using System.IO; using System.Linq; using System.Text; +using System.Threading; using System.Threading.Tasks; using SharpCompress.Archives; using SharpCompress.Compressors.ZStandard; @@ -20,15 +21,12 @@ public override IEnumerable GetSupportedExtensions() yield return "zstd"; } - public override bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = 65536 - ) => ZStandardStream.IsZStandard(stream); + public override bool IsArchive(Stream stream, string? password = null) => + ZStandardStream.IsZStandard(stream); public override ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); + CancellationToken cancellationToken = default + ) => ZStandardStream.IsZStandardAsync(stream, cancellationToken); } diff --git a/src/SharpCompress/Factories/ZipFactory.cs b/src/SharpCompress/Factories/ZipFactory.cs index ba2441079..bc75b4ad8 100644 --- a/src/SharpCompress/Factories/ZipFactory.cs +++ b/src/SharpCompress/Factories/ZipFactory.cs @@ -41,11 +41,7 @@ public override IEnumerable GetSupportedExtensions() } /// - public override bool IsArchive( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) + public override bool IsArchive(Stream stream, string? password = null) { var startPosition = stream.CanSeek ? stream.Position : -1; @@ -53,10 +49,10 @@ public override bool IsArchive( if (stream is not SharpCompressStream) // wrap to provide buffer bef { - stream = new SharpCompressStream(stream, bufferSize: bufferSize); + stream = new SharpCompressStream(stream, bufferSize: ReaderOptions.DefaultBufferSize); } - if (ZipArchive.IsZipFile(stream, password, bufferSize)) + if (ZipArchive.IsZipFile(stream, password, ReaderOptions.DefaultBufferSize)) { return true; } @@ -71,7 +67,7 @@ public override bool IsArchive( stream.Position = startPosition; //test the zip (last) file of a multipart zip - if (ZipArchive.IsZipMulti(stream, password, bufferSize)) + if (ZipArchive.IsZipMulti(stream, password, ReaderOptions.DefaultBufferSize)) { return true; } @@ -81,17 +77,10 @@ public override bool IsArchive( return false; } - public override ValueTask IsArchiveAsync( - Stream stream, - string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize - ) => new(IsArchive(stream, password, bufferSize)); - /// public override async ValueTask IsArchiveAsync( Stream stream, string? password = null, - int bufferSize = ReaderOptions.DefaultBufferSize, CancellationToken cancellationToken = default ) { @@ -102,10 +91,17 @@ public override async ValueTask IsArchiveAsync( if (stream is not SharpCompressStream) // wrap to provide buffer bef { - stream = new SharpCompressStream(stream, bufferSize: bufferSize); + stream = new SharpCompressStream(stream, bufferSize: ReaderOptions.DefaultBufferSize); } - if (await ZipArchive.IsZipFileAsync(stream, password, bufferSize, cancellationToken)) + if ( + await ZipArchive.IsZipFileAsync( + stream, + password, + ReaderOptions.DefaultBufferSize, + cancellationToken + ) + ) { return true; } @@ -120,7 +116,14 @@ public override async ValueTask IsArchiveAsync( stream.Position = startPosition; //test the zip (last) file of a multipart zip - if (await ZipArchive.IsZipMultiAsync(stream, password, bufferSize, cancellationToken)) + if ( + await ZipArchive.IsZipMultiAsync( + stream, + password, + ReaderOptions.DefaultBufferSize, + cancellationToken + ) + ) { return true; } @@ -151,15 +154,8 @@ public IArchive OpenArchive(FileInfo fileInfo, ReaderOptions? readerOptions = nu ZipArchive.OpenArchive(fileInfo, readerOptions); /// - public IAsyncArchive OpenAsyncArchive( - FileInfo fileInfo, - ReaderOptions? readerOptions = null, - CancellationToken cancellationToken = default - ) - { - cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncArchive)OpenArchive(fileInfo, readerOptions); - } + public IAsyncArchive OpenAsyncArchive(FileInfo fileInfo, ReaderOptions? readerOptions = null) => + (IAsyncArchive)OpenArchive(fileInfo, readerOptions); #endregion @@ -203,14 +199,14 @@ public IReader OpenReader(Stream stream, ReaderOptions? options) => ZipReader.OpenReader(stream, options); /// - public IAsyncReader OpenAsyncReader( + public ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken = default ) { cancellationToken.ThrowIfCancellationRequested(); - return (IAsyncReader)ZipReader.OpenReader(stream, options); + return new((IAsyncReader)ZipReader.OpenReader(stream, options)); } #endregion diff --git a/src/SharpCompress/IO/BufferedSubStream.Async.cs b/src/SharpCompress/IO/BufferedSubStream.Async.cs new file mode 100644 index 000000000..6e8cd1716 --- /dev/null +++ b/src/SharpCompress/IO/BufferedSubStream.Async.cs @@ -0,0 +1,92 @@ +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.IO; + +internal partial class BufferedSubStream +{ + private async ValueTask RefillCacheAsync(CancellationToken cancellationToken) + { + if (_isDisposed) + { + throw new ObjectDisposedException(nameof(BufferedSubStream)); + } + + var count = (int)Math.Min(BytesLeftToRead, _cache!.Length); + _cacheOffset = 0; + if (count == 0) + { + _cacheLength = 0; + return; + } + // Only seek if we're not already at the correct position + // This avoids expensive seek operations when reading sequentially + if (Stream.CanSeek && Stream.Position != origin) + { + Stream.Position = origin; + } + _cacheLength = await Stream + .ReadAsync(_cache, 0, count, cancellationToken) + .ConfigureAwait(false); + origin += _cacheLength; + BytesLeftToRead -= _cacheLength; + } + + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (count > Length) + { + count = (int)Length; + } + + if (count > 0) + { + if (_cacheOffset == _cacheLength) + { + await RefillCacheAsync(cancellationToken).ConfigureAwait(false); + } + + count = Math.Min(count, _cacheLength - _cacheOffset); + Buffer.BlockCopy(_cache!, _cacheOffset, buffer, offset, count); + _cacheOffset += count; + } + + return count; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var count = buffer.Length; + if (count > Length) + { + count = (int)Length; + } + + if (count > 0) + { + if (_cacheOffset == _cacheLength) + { + await RefillCacheAsync(cancellationToken).ConfigureAwait(false); + } + + count = Math.Min(count, _cacheLength - _cacheOffset); + _cache!.AsSpan(_cacheOffset, count).CopyTo(buffer.Span); + _cacheOffset += count; + } + + return count; + } +#endif +} diff --git a/src/SharpCompress/IO/BufferedSubStream.cs b/src/SharpCompress/IO/BufferedSubStream.cs index 1cfc1867b..0ec967279 100755 --- a/src/SharpCompress/IO/BufferedSubStream.cs +++ b/src/SharpCompress/IO/BufferedSubStream.cs @@ -6,7 +6,7 @@ namespace SharpCompress.IO; -internal class BufferedSubStream : SharpCompressStream, IStreamStack +internal partial class BufferedSubStream : SharpCompressStream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -94,33 +94,6 @@ private void RefillCache() BytesLeftToRead -= _cacheLength; } - private async ValueTask RefillCacheAsync(CancellationToken cancellationToken) - { - if (_isDisposed) - { - throw new ObjectDisposedException(nameof(BufferedSubStream)); - } - - var count = (int)Math.Min(BytesLeftToRead, _cache!.Length); - _cacheOffset = 0; - if (count == 0) - { - _cacheLength = 0; - return; - } - // Only seek if we're not already at the correct position - // This avoids expensive seek operations when reading sequentially - if (Stream.CanSeek && Stream.Position != origin) - { - Stream.Position = origin; - } - _cacheLength = await Stream - .ReadAsync(_cache, 0, count, cancellationToken) - .ConfigureAwait(false); - origin += _cacheLength; - BytesLeftToRead -= _cacheLength; - } - public override int Read(byte[] buffer, int offset, int count) { if (count > Length) @@ -157,61 +130,6 @@ public override int ReadByte() return _cache![_cacheOffset++]; } - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (count > Length) - { - count = (int)Length; - } - - if (count > 0) - { - if (_cacheOffset == _cacheLength) - { - await RefillCacheAsync(cancellationToken).ConfigureAwait(false); - } - - count = Math.Min(count, _cacheLength - _cacheOffset); - Buffer.BlockCopy(_cache!, _cacheOffset, buffer, offset, count); - _cacheOffset += count; - } - - return count; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - var count = buffer.Length; - if (count > Length) - { - count = (int)Length; - } - - if (count > 0) - { - if (_cacheOffset == _cacheLength) - { - await RefillCacheAsync(cancellationToken).ConfigureAwait(false); - } - - count = Math.Min(count, _cacheLength - _cacheOffset); - _cache!.AsSpan(_cacheOffset, count).CopyTo(buffer.Span); - _cacheOffset += count; - } - - return count; - } -#endif - public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); public override void SetLength(long value) => throw new NotSupportedException(); diff --git a/src/SharpCompress/IO/IStreamStack.cs b/src/SharpCompress/IO/IStreamStack.cs index 943f7c250..ab810d3e4 100644 --- a/src/SharpCompress/IO/IStreamStack.cs +++ b/src/SharpCompress/IO/IStreamStack.cs @@ -105,7 +105,9 @@ internal static void Rewind(this IStreamStack stream, int count) internal static void SetBuffer(this IStreamStack stream, int bufferSize, bool force) { if (bufferSize == 0 || stream == null) + { return; + } IStreamStack? current = stream; IStreamStack defaultBuffer = stream; @@ -116,13 +118,22 @@ internal static void SetBuffer(this IStreamStack stream, int bufferSize, bool fo { defaultBuffer = current; if (buffer == null && ((current.BufferSize != 0 && bufferSize != 0) || force)) + { buffer = current; + } + if (defaultBuffer.DefaultBufferSize != 0) + { break; + } + current = current.BaseStream() as IStreamStack; } if (defaultBuffer.DefaultBufferSize == 0) + { defaultBuffer.DefaultBufferSize = bufferSize; + } + (buffer ?? stream).BufferSize = bufferSize; } @@ -244,7 +255,10 @@ out int baseReadCount private static string cleansePos(long pos) { if (pos < 0) + { return ""; + } + return "Px" + pos.ToString("x"); } @@ -262,7 +276,10 @@ bool construct ) { if (instanceId == 0) //will not be equal to 0 when inherited IStackStream types are being used + { instanceId = System.Threading.Interlocked.Increment(ref _instanceCounter); + } + return instanceId; } @@ -281,9 +298,11 @@ public static void DebugConstruct(this IStreamStack stream, Type constructing) ? $"{frame.GetMethod()?.DeclaringType?.Name}.{frame.GetMethod()?.Name}()" : "Unknown"; if (constructing.FullName == stream.GetType().FullName) //don't debug base IStackStream types + { Debug.WriteLine( $"{GetStreamStackString(stream, true)} : Constructed by [{parentInfo}]" ); + } } /// @@ -299,7 +318,11 @@ public static void DebugDispose(this IStreamStack stream, Type constructing) ? $"{frame.GetMethod()?.DeclaringType?.Name}.{frame.GetMethod()?.Name}()" : "Unknown"; if (constructing.FullName == stream.GetType().FullName) //don't debug base IStackStream types - Debug.WriteLine($"{GetStreamStackString(stream, false)} : Disposed by [{parentInfo}]"); + { + Debug.WriteLine( + $"{GetStreamStackString(stream, false)} : Disposed by [{parentInfo}]" + ); + } } /// @@ -333,7 +356,10 @@ public static string GetStreamStackString(this IStreamStack stream, bool constru sStack != null ? "Dx" + sStack.DefaultBufferSize.ToString("x") : ""; if (sb.Length > 0) + { sb.Insert(0, "/"); + } + try { sb.Insert( @@ -344,17 +370,25 @@ public static string GetStreamStackString(this IStreamStack stream, bool constru catch { if (current is SharpCompressStream scs) + { sb.Insert( 0, $"{current.GetType().Name}{id}[{cleansePos(scs.InternalPosition)}:{buffSize}:{defBuffSize}]" ); + } else + { sb.Insert(0, $"{current.GetType().Name}{id}[:{buffSize}]"); + } } if (sStack != null) + { current = sStack.BaseStream(); //current may not be a IStreamStack, allow one more loop + } else + { break; + } } return sb.ToString(); } diff --git a/src/SharpCompress/IO/ProgressReportingStream.Async.cs b/src/SharpCompress/IO/ProgressReportingStream.Async.cs new file mode 100644 index 000000000..5fed0c612 --- /dev/null +++ b/src/SharpCompress/IO/ProgressReportingStream.Async.cs @@ -0,0 +1,56 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.IO; + +internal sealed partial class ProgressReportingStream +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + var bytesRead = await _baseStream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + if (bytesRead > 0) + { + _bytesTransferred += bytesRead; + ReportProgress(); + } + return bytesRead; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var bytesRead = await _baseStream + .ReadAsync(buffer, cancellationToken) + .ConfigureAwait(false); + if (bytesRead > 0) + { + _bytesTransferred += bytesRead; + ReportProgress(); + } + return bytesRead; + } +#endif + +#if !LEGACY_DOTNET + public override async ValueTask DisposeAsync() + { + if (!_leaveOpen) + { + await _baseStream.DisposeAsync().ConfigureAwait(false); + } + await base.DisposeAsync().ConfigureAwait(false); + } +#endif +} diff --git a/src/SharpCompress/IO/ProgressReportingStream.cs b/src/SharpCompress/IO/ProgressReportingStream.cs index efadba41d..ec2f4fad5 100644 --- a/src/SharpCompress/IO/ProgressReportingStream.cs +++ b/src/SharpCompress/IO/ProgressReportingStream.cs @@ -1,7 +1,5 @@ using System; using System.IO; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common; namespace SharpCompress.IO; @@ -10,7 +8,7 @@ namespace SharpCompress.IO; /// A stream wrapper that reports progress as data is read from the source. /// Used to track compression or extraction progress by wrapping the source stream. /// -internal sealed class ProgressReportingStream : Stream +internal sealed partial class ProgressReportingStream : Stream { private readonly Stream _baseStream; private readonly IProgress _progress; @@ -77,42 +75,6 @@ public override int Read(Span buffer) } #endif - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - var bytesRead = await _baseStream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - if (bytesRead > 0) - { - _bytesTransferred += bytesRead; - ReportProgress(); - } - return bytesRead; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - var bytesRead = await _baseStream - .ReadAsync(buffer, cancellationToken) - .ConfigureAwait(false); - if (bytesRead > 0) - { - _bytesTransferred += bytesRead; - ReportProgress(); - } - return bytesRead; - } -#endif - public override int ReadByte() { var value = _baseStream.ReadByte(); @@ -146,15 +108,4 @@ protected override void Dispose(bool disposing) } base.Dispose(disposing); } - -#if !LEGACY_DOTNET - public override async ValueTask DisposeAsync() - { - if (!_leaveOpen) - { - await _baseStream.DisposeAsync().ConfigureAwait(false); - } - await base.DisposeAsync().ConfigureAwait(false); - } -#endif } diff --git a/src/SharpCompress/IO/ReadOnlySubStream.Async.cs b/src/SharpCompress/IO/ReadOnlySubStream.Async.cs new file mode 100644 index 000000000..42ef8c5e6 --- /dev/null +++ b/src/SharpCompress/IO/ReadOnlySubStream.Async.cs @@ -0,0 +1,50 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.IO; + +internal partial class ReadOnlySubStream +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (BytesLeftToRead < count) + { + count = (int)BytesLeftToRead; + } + var read = await Stream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + if (read > 0) + { + BytesLeftToRead -= read; + _position += read; + } + return read; + } + +#if !LEGACY_DOTNET + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + var sliceLen = BytesLeftToRead < buffer.Length ? BytesLeftToRead : buffer.Length; + var read = await Stream + .ReadAsync(buffer.Slice(0, (int)sliceLen), cancellationToken) + .ConfigureAwait(false); + if (read > 0) + { + BytesLeftToRead -= read; + _position += read; + } + return read; + } +#endif +} diff --git a/src/SharpCompress/IO/ReadOnlySubStream.cs b/src/SharpCompress/IO/ReadOnlySubStream.cs index c9d7d830a..e98cabd0f 100644 --- a/src/SharpCompress/IO/ReadOnlySubStream.cs +++ b/src/SharpCompress/IO/ReadOnlySubStream.cs @@ -1,12 +1,10 @@ using System; using System.Diagnostics; using System.IO; -using System.Threading; -using System.Threading.Tasks; namespace SharpCompress.IO; -internal class ReadOnlySubStream : SharpCompressStream, IStreamStack +internal partial class ReadOnlySubStream : SharpCompressStream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -95,47 +93,6 @@ public override int Read(Span buffer) } #endif - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (BytesLeftToRead < count) - { - count = (int)BytesLeftToRead; - } - var read = await Stream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - if (read > 0) - { - BytesLeftToRead -= read; - _position += read; - } - return read; - } - -#if !LEGACY_DOTNET - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - var sliceLen = BytesLeftToRead < buffer.Length ? BytesLeftToRead : buffer.Length; - var read = await Stream - .ReadAsync(buffer.Slice(0, (int)sliceLen), cancellationToken) - .ConfigureAwait(false); - if (read > 0) - { - BytesLeftToRead -= read; - _position += read; - } - return read; - } -#endif - public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); public override void SetLength(long value) => throw new NotSupportedException(); diff --git a/src/SharpCompress/IO/SharpCompressStream.Async.cs b/src/SharpCompress/IO/SharpCompressStream.Async.cs new file mode 100644 index 000000000..1e0cbd6cc --- /dev/null +++ b/src/SharpCompress/IO/SharpCompressStream.Async.cs @@ -0,0 +1,192 @@ +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.IO; + +public partial class SharpCompressStream +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (count == 0) + { + return 0; + } + + if (_bufferingEnabled) + { + ValidateBufferState(); + + // Fill buffer if needed + if (_bufferedLength == 0) + { + _bufferedLength = await Stream + .ReadAsync(_buffer!, 0, _bufferSize, cancellationToken) + .ConfigureAwait(false); + _bufferPosition = 0; + } + int available = _bufferedLength - _bufferPosition; + int toRead = Math.Min(count, available); + if (toRead > 0) + { + Array.Copy(_buffer!, _bufferPosition, buffer, offset, toRead); + _bufferPosition += toRead; + _internalPosition += toRead; + return toRead; + } + // If buffer exhausted, refill + int r = await Stream + .ReadAsync(_buffer!, 0, _bufferSize, cancellationToken) + .ConfigureAwait(false); + if (r == 0) + { + return 0; + } + + _bufferedLength = r; + _bufferPosition = 0; + if (_bufferedLength == 0) + { + return 0; + } + toRead = Math.Min(count, _bufferedLength); + Array.Copy(_buffer!, 0, buffer, offset, toRead); + _bufferPosition = toRead; + _internalPosition += toRead; + return toRead; + } + else + { + int read = await Stream + .ReadAsync(buffer, offset, count, cancellationToken) + .ConfigureAwait(false); + _internalPosition += read; + return read; + } + } + + public override async Task WriteAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + await Stream.WriteAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); + _internalPosition += count; + } + + public override async Task FlushAsync(CancellationToken cancellationToken) + { + await Stream.FlushAsync(cancellationToken).ConfigureAwait(false); + } + +#if !LEGACY_DOTNET + + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (buffer.Length == 0) + { + return 0; + } + + if (_bufferingEnabled) + { + ValidateBufferState(); + + // Fill buffer if needed + if (_bufferedLength == 0) + { + _bufferedLength = await Stream + .ReadAsync(_buffer.AsMemory(0, _bufferSize), cancellationToken) + .ConfigureAwait(false); + _bufferPosition = 0; + } + int available = _bufferedLength - _bufferPosition; + int toRead = Math.Min(buffer.Length, available); + if (toRead > 0) + { + _buffer.AsSpan(_bufferPosition, toRead).CopyTo(buffer.Span); + _bufferPosition += toRead; + _internalPosition += toRead; + return toRead; + } + // If buffer exhausted, refill + int r = await Stream + .ReadAsync(_buffer.AsMemory(0, _bufferSize), cancellationToken) + .ConfigureAwait(false); + if (r == 0) + { + return 0; + } + + _bufferedLength = r; + _bufferPosition = 0; + if (_bufferedLength == 0) + { + return 0; + } + toRead = Math.Min(buffer.Length, _bufferedLength); + _buffer.AsSpan(0, toRead).CopyTo(buffer.Span); + _bufferPosition = toRead; + _internalPosition += toRead; + return toRead; + } + else + { + int read = await Stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); + _internalPosition += read; + return read; + } + } + + public override async ValueTask WriteAsync( + ReadOnlyMemory buffer, + CancellationToken cancellationToken = default + ) + { + await Stream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); + _internalPosition += buffer.Length; + } + + public override async ValueTask DisposeAsync() + { +#if DEBUG_STREAMS + this.DebugDispose(typeof(SharpCompressStream)); +#endif + if (_isDisposed) + { + return; + } + _isDisposed = true; + if (LeaveOpen) + { + return; + } + if (ThrowOnDispose) + { + throw new InvalidOperationException( + $"Attempt to dispose of a {nameof(SharpCompressStream)} when {nameof(ThrowOnDispose)} is {ThrowOnDispose}" + ); + } + await base.DisposeAsync(); + await Stream.DisposeAsync(); + if (_buffer != null) + { + ArrayPool.Shared.Return(_buffer); + _buffer = null; + } + } + +#endif +} diff --git a/src/SharpCompress/IO/SharpCompressStream.cs b/src/SharpCompress/IO/SharpCompressStream.cs index cc64a0c2f..24f1e51e0 100644 --- a/src/SharpCompress/IO/SharpCompressStream.cs +++ b/src/SharpCompress/IO/SharpCompressStream.cs @@ -6,7 +6,7 @@ namespace SharpCompress.IO; -public class SharpCompressStream : Stream, IStreamStack +public partial class SharpCompressStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -70,7 +70,10 @@ int IStreamStack.BufferPosition if (_bufferingEnabled) { if (value < 0 || value > _bufferedLength) + { throw new ArgumentOutOfRangeException(nameof(value)); + } + _internalPosition = _internalPosition - _bufferPosition + value; _bufferPosition = value; ValidateBufferState(); // Add here @@ -108,7 +111,10 @@ stream is SharpCompressStream sc ) { if (bufferSize != 0) + { ((IStreamStack)stream).SetBuffer(bufferSize, forceBuffer); + } + return sc; } return new SharpCompressStream(stream, leaveOpen, throwOnDispose, bufferSize, forceBuffer); @@ -123,8 +129,8 @@ public SharpCompressStream( ) { Stream = stream; - this.LeaveOpen = leaveOpen; - this.ThrowOnDispose = throwOnDispose; + LeaveOpen = leaveOpen; + ThrowOnDispose = throwOnDispose; _readOnly = !Stream.CanSeek; ((IStreamStack)this).SetBuffer(bufferSize, forceBuffer); @@ -146,9 +152,7 @@ protected override void Dispose(bool disposing) return; } _isDisposed = true; - base.Dispose(disposing); - - if (this.LeaveOpen) + if (LeaveOpen) { return; } @@ -158,6 +162,7 @@ protected override void Dispose(bool disposing) $"Attempt to dispose of a {nameof(SharpCompressStream)} when {nameof(ThrowOnDispose)} is {ThrowOnDispose}" ); } + base.Dispose(disposing); if (disposing) { Stream.Dispose(); @@ -198,7 +203,9 @@ public override long Position public override int Read(byte[] buffer, int offset, int count) { if (count == 0) + { return 0; + } if (_bufferingEnabled) { @@ -222,7 +229,10 @@ public override int Read(byte[] buffer, int offset, int count) // If buffer exhausted, refill int r = Stream.Read(_buffer!, 0, _bufferSize); if (r == 0) + { return 0; + } + _bufferedLength = r; _bufferPosition = 0; if (_bufferedLength == 0) @@ -266,7 +276,7 @@ public override long Seek(long offset, SeekOrigin origin) targetPos = _internalPosition + offset; break; case SeekOrigin.End: - targetPos = this.Length + offset; + targetPos = Length + offset; break; default: throw new ArgumentOutOfRangeException(nameof(origin), origin, null); @@ -307,147 +317,4 @@ public override void Write(byte[] buffer, int offset, int count) Stream.Write(buffer, offset, count); _internalPosition += count; } - - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (count == 0) - return 0; - - if (_bufferingEnabled) - { - ValidateBufferState(); - - // Fill buffer if needed - if (_bufferedLength == 0) - { - _bufferedLength = await Stream - .ReadAsync(_buffer!, 0, _bufferSize, cancellationToken) - .ConfigureAwait(false); - _bufferPosition = 0; - } - int available = _bufferedLength - _bufferPosition; - int toRead = Math.Min(count, available); - if (toRead > 0) - { - Array.Copy(_buffer!, _bufferPosition, buffer, offset, toRead); - _bufferPosition += toRead; - _internalPosition += toRead; - return toRead; - } - // If buffer exhausted, refill - int r = await Stream - .ReadAsync(_buffer!, 0, _bufferSize, cancellationToken) - .ConfigureAwait(false); - if (r == 0) - return 0; - _bufferedLength = r; - _bufferPosition = 0; - if (_bufferedLength == 0) - { - return 0; - } - toRead = Math.Min(count, _bufferedLength); - Array.Copy(_buffer!, 0, buffer, offset, toRead); - _bufferPosition = toRead; - _internalPosition += toRead; - return toRead; - } - else - { - int read = await Stream - .ReadAsync(buffer, offset, count, cancellationToken) - .ConfigureAwait(false); - _internalPosition += read; - return read; - } - } - - public override async Task WriteAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - await Stream.WriteAsync(buffer, offset, count, cancellationToken).ConfigureAwait(false); - _internalPosition += count; - } - - public override async Task FlushAsync(CancellationToken cancellationToken) - { - await Stream.FlushAsync(cancellationToken).ConfigureAwait(false); - } - -#if !LEGACY_DOTNET - - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - if (buffer.Length == 0) - return 0; - - if (_bufferingEnabled) - { - ValidateBufferState(); - - // Fill buffer if needed - if (_bufferedLength == 0) - { - _bufferedLength = await Stream - .ReadAsync(_buffer.AsMemory(0, _bufferSize), cancellationToken) - .ConfigureAwait(false); - _bufferPosition = 0; - } - int available = _bufferedLength - _bufferPosition; - int toRead = Math.Min(buffer.Length, available); - if (toRead > 0) - { - _buffer.AsSpan(_bufferPosition, toRead).CopyTo(buffer.Span); - _bufferPosition += toRead; - _internalPosition += toRead; - return toRead; - } - // If buffer exhausted, refill - int r = await Stream - .ReadAsync(_buffer.AsMemory(0, _bufferSize), cancellationToken) - .ConfigureAwait(false); - if (r == 0) - return 0; - _bufferedLength = r; - _bufferPosition = 0; - if (_bufferedLength == 0) - { - return 0; - } - toRead = Math.Min(buffer.Length, _bufferedLength); - _buffer.AsSpan(0, toRead).CopyTo(buffer.Span); - _bufferPosition = toRead; - _internalPosition += toRead; - return toRead; - } - else - { - int read = await Stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); - _internalPosition += read; - return read; - } - } - - public override async ValueTask WriteAsync( - ReadOnlyMemory buffer, - CancellationToken cancellationToken = default - ) - { - await Stream.WriteAsync(buffer, cancellationToken).ConfigureAwait(false); - _internalPosition += buffer.Length; - } - -#endif } diff --git a/src/SharpCompress/IO/SourceStream.Async.cs b/src/SharpCompress/IO/SourceStream.Async.cs new file mode 100644 index 000000000..73576fc27 --- /dev/null +++ b/src/SharpCompress/IO/SourceStream.Async.cs @@ -0,0 +1,110 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress.IO; + +public partial class SourceStream +{ + public override async Task ReadAsync( + byte[] buffer, + int offset, + int count, + CancellationToken cancellationToken + ) + { + if (count <= 0) + { + return 0; + } + + var total = count; + var r = -1; + + while (count != 0 && r != 0) + { + r = await Current + .ReadAsync( + buffer, + offset, + (int)Math.Min(count, Current.Length - Current.Position), + cancellationToken + ) + .ConfigureAwait(false); + count -= r; + offset += r; + + if (!IsVolumes && count != 0 && Current.Position == Current.Length) + { + var length = Current.Length; + + // Load next file if present + if (!SetStream(_stream + 1)) + { + break; + } + + // Current stream switched + // Add length of previous stream + _prevSize += length; + Current.Seek(0, SeekOrigin.Begin); + r = -1; //BugFix: reset to allow loop if count is still not 0 - was breaking split zipx (lzma xz etc) + } + } + + return total - count; + } + +#if !LEGACY_DOTNET + + public override async ValueTask ReadAsync( + Memory buffer, + CancellationToken cancellationToken = default + ) + { + if (buffer.Length <= 0) + { + return 0; + } + + var total = buffer.Length; + var count = buffer.Length; + var offset = 0; + var r = -1; + + while (count != 0 && r != 0) + { + r = await Current + .ReadAsync( + buffer.Slice(offset, (int)Math.Min(count, Current.Length - Current.Position)), + cancellationToken + ) + .ConfigureAwait(false); + count -= r; + offset += r; + + if (!IsVolumes && count != 0 && Current.Position == Current.Length) + { + var length = Current.Length; + + // Load next file if present + if (!SetStream(_stream + 1)) + { + break; + } + + // Current stream switched + // Add length of previous stream + _prevSize += length; + Current.Seek(0, SeekOrigin.Begin); + r = -1; + } + } + + return total - count; + } +#endif +} diff --git a/src/SharpCompress/IO/SourceStream.cs b/src/SharpCompress/IO/SourceStream.cs index e9cc74a63..30bbf7c46 100644 --- a/src/SharpCompress/IO/SourceStream.cs +++ b/src/SharpCompress/IO/SourceStream.cs @@ -8,7 +8,7 @@ namespace SharpCompress.IO; -public class SourceStream : Stream, IStreamStack +public partial class SourceStream : Stream, IStreamStack { #if DEBUG_STREAMS long IStreamStack.InstanceId { get; set; } @@ -240,108 +240,9 @@ public override long Seek(long offset, SeekOrigin origin) public override void Write(byte[] buffer, int offset, int count) => throw new NotImplementedException(); - public override async Task ReadAsync( - byte[] buffer, - int offset, - int count, - CancellationToken cancellationToken - ) - { - if (count <= 0) - { - return 0; - } - - var total = count; - var r = -1; - - while (count != 0 && r != 0) - { - r = await Current - .ReadAsync( - buffer, - offset, - (int)Math.Min(count, Current.Length - Current.Position), - cancellationToken - ) - .ConfigureAwait(false); - count -= r; - offset += r; - - if (!IsVolumes && count != 0 && Current.Position == Current.Length) - { - var length = Current.Length; - - // Load next file if present - if (!SetStream(_stream + 1)) - { - break; - } - - // Current stream switched - // Add length of previous stream - _prevSize += length; - Current.Seek(0, SeekOrigin.Begin); - r = -1; //BugFix: reset to allow loop if count is still not 0 - was breaking split zipx (lzma xz etc) - } - } - - return total - count; - } - -#if !LEGACY_DOTNET - - public override async ValueTask ReadAsync( - Memory buffer, - CancellationToken cancellationToken = default - ) - { - if (buffer.Length <= 0) - { - return 0; - } - - var total = buffer.Length; - var count = buffer.Length; - var offset = 0; - var r = -1; - - while (count != 0 && r != 0) - { - r = await Current - .ReadAsync( - buffer.Slice(offset, (int)Math.Min(count, Current.Length - Current.Position)), - cancellationToken - ) - .ConfigureAwait(false); - count -= r; - offset += r; - - if (!IsVolumes && count != 0 && Current.Position == Current.Length) - { - var length = Current.Length; - - // Load next file if present - if (!SetStream(_stream + 1)) - { - break; - } - - // Current stream switched - // Add length of previous stream - _prevSize += length; - Current.Seek(0, SeekOrigin.Begin); - r = -1; - } - } - - return total - count; - } -#endif - public override void Close() { - if (IsFileMode || !ReaderOptions.LeaveStreamOpen) //close if file mode or options specify it + if (!ReaderOptions.LeaveStreamOpen) //close if file mode or options specify it { foreach (var stream in _streams) { diff --git a/src/SharpCompress/Readers/AbstractReader.Async.cs b/src/SharpCompress/Readers/AbstractReader.Async.cs new file mode 100644 index 000000000..9dacd88e0 --- /dev/null +++ b/src/SharpCompress/Readers/AbstractReader.Async.cs @@ -0,0 +1,207 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.IO; + +namespace SharpCompress.Readers; + +public abstract partial class AbstractReader + where TEntry : Entry + where TVolume : Volume +{ + public virtual async ValueTask DisposeAsync() + { + if (_entriesForCurrentReadStreamAsync is not null) + { + await _entriesForCurrentReadStreamAsync.DisposeAsync(); + } + + // If Volume implements IAsyncDisposable, use async disposal + if (Volume is IAsyncDisposable asyncDisposable) + { + await asyncDisposable.DisposeAsync(); + } + else + { + Volume?.Dispose(); + } + } + + public async ValueTask MoveToNextEntryAsync(CancellationToken cancellationToken = default) + { + if (_completed) + { + return false; + } + if (Cancelled) + { + throw new ReaderCancelledException("Reader has been cancelled."); + } + if (_entriesForCurrentReadStreamAsync is null) + { + return await LoadStreamForReadingAsync(RequestInitialStream()); + } + if (!_wroteCurrentEntry) + { + await SkipEntryAsync(cancellationToken).ConfigureAwait(false); + } + _wroteCurrentEntry = false; + if (await NextEntryForCurrentStreamAsync(cancellationToken)) + { + return true; + } + _completed = true; + return false; + } + + protected async ValueTask LoadStreamForReadingAsync(Stream stream) + { + if (_entriesForCurrentReadStreamAsync is not null) + { + await _entriesForCurrentReadStreamAsync.DisposeAsync(); + } + if (stream is null || !stream.CanRead) + { + throw new MultipartStreamRequiredException( + "File is split into multiple archives: '" + + Entry.Key + + "'. A new readable stream is required. Use Cancel if it was intended." + ); + } + _entriesForCurrentReadStreamAsync = GetEntriesAsync(stream).GetAsyncEnumerator(); + return await _entriesForCurrentReadStreamAsync.MoveNextAsync(); + } + + private async ValueTask SkipEntryAsync(CancellationToken cancellationToken) + { + if (!Entry.IsDirectory) + { + await SkipAsync(cancellationToken).ConfigureAwait(false); + } + } + + private async ValueTask SkipAsync(CancellationToken cancellationToken) + { + var part = Entry.Parts.First(); + + if (!Entry.IsSplitAfter && !Entry.IsSolid && Entry.CompressedSize > 0) + { + //not solid and has a known compressed size then we can skip raw bytes. + var rawStream = part.GetRawStream(); + + if (rawStream != null) + { + var bytesToAdvance = Entry.CompressedSize; + await rawStream.SkipAsync(bytesToAdvance, cancellationToken).ConfigureAwait(false); + part.Skipped = true; + return; + } + } + //don't know the size so we have to try to decompress to skip +#if LEGACY_DOTNET + using var s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); + await s.SkipEntryAsync(cancellationToken).ConfigureAwait(false); +#else + await using var s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); + await s.SkipEntryAsync(cancellationToken).ConfigureAwait(false); +#endif + } + + public async ValueTask WriteEntryToAsync( + Stream writableStream, + CancellationToken cancellationToken = default + ) + { + if (_wroteCurrentEntry) + { + throw new ArgumentException( + "WriteEntryToAsync or OpenEntryStreamAsync can only be called once." + ); + } + + if (writableStream is null) + { + throw new ArgumentNullException(nameof(writableStream)); + } + if (!writableStream.CanWrite) + { + throw new ArgumentException( + "A writable Stream was required. Use Cancel if that was intended." + ); + } + + await WriteAsync(writableStream, cancellationToken).ConfigureAwait(false); + _wroteCurrentEntry = true; + } + + internal async ValueTask WriteAsync(Stream writeStream, CancellationToken cancellationToken) + { +#if LEGACY_DOTNET + using Stream s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); + var sourceStream = WrapWithProgress(s, Entry); + await sourceStream.CopyToAsync(writeStream, 81920, cancellationToken).ConfigureAwait(false); +#else + await using Stream s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); + var sourceStream = WrapWithProgress(s, Entry); + await sourceStream.CopyToAsync(writeStream, 81920, cancellationToken).ConfigureAwait(false); +#endif + } + + public async ValueTask OpenEntryStreamAsync( + CancellationToken cancellationToken = default + ) + { + if (_wroteCurrentEntry) + { + throw new ArgumentException( + "WriteEntryToAsync or OpenEntryStreamAsync can only be called once." + ); + } + var stream = await GetEntryStreamAsync(cancellationToken).ConfigureAwait(false); + _wroteCurrentEntry = true; + return stream; + } + + protected virtual async ValueTask GetEntryStreamAsync( + CancellationToken cancellationToken = default + ) + { + var stream = await Entry + .Parts.First() + .GetCompressedStreamAsync(cancellationToken) + .ConfigureAwait(false); + return CreateEntryStream(stream); + } + + internal virtual ValueTask NextEntryForCurrentStreamAsync() => + _entriesForCurrentReadStreamAsync.NotNull().MoveNextAsync(); + + /// + /// Moves the current async enumerator to the next entry. + /// + internal virtual ValueTask NextEntryForCurrentStreamAsync( + CancellationToken cancellationToken + ) + { + if (_entriesForCurrentReadStreamAsync is not null) + { + return _entriesForCurrentReadStreamAsync.MoveNextAsync(); + } + + return new ValueTask(NextEntryForCurrentStream()); + } + + // Async iterator method + protected virtual async IAsyncEnumerable GetEntriesAsync(Stream stream) + { + await Task.CompletedTask; + foreach (var entry in GetEntries(stream)) + { + yield return entry; + } + } +} diff --git a/src/SharpCompress/Readers/AbstractReader.cs b/src/SharpCompress/Readers/AbstractReader.cs index 123576c29..18f214a70 100644 --- a/src/SharpCompress/Readers/AbstractReader.cs +++ b/src/SharpCompress/Readers/AbstractReader.cs @@ -2,8 +2,6 @@ using System.Collections.Generic; using System.IO; using System.Linq; -using System.Threading; -using System.Threading.Tasks; using SharpCompress.Common; using SharpCompress.IO; @@ -12,7 +10,7 @@ namespace SharpCompress.Readers; /// /// A generic push reader that reads unseekable comrpessed streams. /// -public abstract class AbstractReader : IReader, IAsyncReader +public abstract partial class AbstractReader : IReader, IAsyncReader where TEntry : Entry where TVolume : Volume { @@ -31,6 +29,8 @@ internal AbstractReader(ReaderOptions options, ArchiveType archiveType) public ArchiveType ArchiveType { get; } + protected bool IsAsync => _entriesForCurrentReadStreamAsync is not null; + /// /// Current volume that the current entry resides in /// @@ -59,15 +59,6 @@ public virtual void Dispose() Volume?.Dispose(); } - public virtual async ValueTask DisposeAsync() - { - if (_entriesForCurrentReadStreamAsync is not null) - { - await _entriesForCurrentReadStreamAsync.DisposeAsync(); - } - Volume?.Dispose(); - } - #endregion public bool Cancelled { get; private set; } @@ -118,33 +109,6 @@ public bool MoveToNextEntry() return false; } - public async ValueTask MoveToNextEntryAsync(CancellationToken cancellationToken = default) - { - if (_completed) - { - return false; - } - if (Cancelled) - { - throw new ReaderCancelledException("Reader has been cancelled."); - } - if (_entriesForCurrentReadStreamAsync is null) - { - return await LoadStreamForReadingAsync(RequestInitialStream()); - } - if (!_wroteCurrentEntry) - { - await SkipEntryAsync(cancellationToken).ConfigureAwait(false); - } - _wroteCurrentEntry = false; - if (await NextEntryForCurrentStreamAsync(cancellationToken)) - { - return true; - } - _completed = true; - return false; - } - protected bool LoadStreamForReading(Stream stream) { if (_entriesForCurrentReadStreamAsync is not null) @@ -166,59 +130,14 @@ protected bool LoadStreamForReading(Stream stream) return _entriesForCurrentReadStream.MoveNext(); } - protected async ValueTask LoadStreamForReadingAsync(Stream stream) - { - if (_entriesForCurrentReadStreamAsync is not null) - { - await _entriesForCurrentReadStreamAsync.DisposeAsync(); - } - if (stream is null || !stream.CanRead) - { - throw new MultipartStreamRequiredException( - "File is split into multiple archives: '" - + Entry.Key - + "'. A new readable stream is required. Use Cancel if it was intended." - ); - } - _entriesForCurrentReadStreamAsync = GetEntriesAsync(stream).GetAsyncEnumerator(); - return await _entriesForCurrentReadStreamAsync.MoveNextAsync(); - } - protected virtual Stream RequestInitialStream() => Volume.NotNull("Volume isn't loaded.").Stream; internal virtual bool NextEntryForCurrentStream() => _entriesForCurrentReadStream.NotNull().MoveNext(); - internal virtual ValueTask NextEntryForCurrentStreamAsync() => - _entriesForCurrentReadStreamAsync.NotNull().MoveNextAsync(); - - /// - /// Moves the current async enumerator to the next entry. - /// - internal virtual ValueTask NextEntryForCurrentStreamAsync( - CancellationToken cancellationToken - ) - { - if (_entriesForCurrentReadStreamAsync is not null) - { - return _entriesForCurrentReadStreamAsync.MoveNextAsync(); - } - - return new ValueTask(NextEntryForCurrentStream()); - } - protected abstract IEnumerable GetEntries(Stream stream); - protected virtual async IAsyncEnumerable GetEntriesAsync(Stream stream) - { - await Task.CompletedTask; - foreach (var entry in GetEntries(stream)) - { - yield return entry; - } - } - #region Entry Skip/Write private void SkipEntry() @@ -229,14 +148,6 @@ private void SkipEntry() } } - private async ValueTask SkipEntryAsync(CancellationToken cancellationToken) - { - if (!Entry.IsDirectory) - { - await SkipAsync(cancellationToken).ConfigureAwait(false); - } - } - private void Skip() { var part = Entry.Parts.First(); @@ -259,33 +170,6 @@ private void Skip() s.SkipEntry(); } - private async ValueTask SkipAsync(CancellationToken cancellationToken) - { - var part = Entry.Parts.First(); - - if (!Entry.IsSplitAfter && !Entry.IsSolid && Entry.CompressedSize > 0) - { - //not solid and has a known compressed size then we can skip raw bytes. - var rawStream = part.GetRawStream(); - - if (rawStream != null) - { - var bytesToAdvance = Entry.CompressedSize; - await rawStream.SkipAsync(bytesToAdvance, cancellationToken).ConfigureAwait(false); - part.Skipped = true; - return; - } - } - //don't know the size so we have to try to decompress to skip -#if LEGACY_DOTNET - using var s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); - await s.SkipEntryAsync(cancellationToken).ConfigureAwait(false); -#else - await using var s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); - await s.SkipEntryAsync(cancellationToken).ConfigureAwait(false); -#endif - } - public void WriteEntryTo(Stream writableStream) { if (_wroteCurrentEntry) @@ -308,33 +192,6 @@ public void WriteEntryTo(Stream writableStream) _wroteCurrentEntry = true; } - public async ValueTask WriteEntryToAsync( - Stream writableStream, - CancellationToken cancellationToken = default - ) - { - if (_wroteCurrentEntry) - { - throw new ArgumentException( - "WriteEntryToAsync or OpenEntryStream can only be called once." - ); - } - - if (writableStream is null) - { - throw new ArgumentNullException(nameof(writableStream)); - } - if (!writableStream.CanWrite) - { - throw new ArgumentException( - "A writable Stream was required. Use Cancel if that was intended." - ); - } - - await WriteAsync(writableStream, cancellationToken).ConfigureAwait(false); - _wroteCurrentEntry = true; - } - internal void Write(Stream writeStream) { using Stream s = OpenEntryStream(); @@ -342,19 +199,6 @@ internal void Write(Stream writeStream) sourceStream.CopyTo(writeStream, 81920); } - internal async ValueTask WriteAsync(Stream writeStream, CancellationToken cancellationToken) - { -#if LEGACY_DOTNET - using Stream s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); - var sourceStream = WrapWithProgress(s, Entry); - await sourceStream.CopyToAsync(writeStream, 81920, cancellationToken).ConfigureAwait(false); -#else - await using Stream s = await OpenEntryStreamAsync(cancellationToken).ConfigureAwait(false); - var sourceStream = WrapWithProgress(s, Entry); - await sourceStream.CopyToAsync(writeStream, 81920, cancellationToken).ConfigureAwait(false); -#endif - } - private Stream WrapWithProgress(Stream source, Entry entry) { var progress = Options.Progress; @@ -400,21 +244,6 @@ public EntryStream OpenEntryStream() return stream; } - public async ValueTask OpenEntryStreamAsync( - CancellationToken cancellationToken = default - ) - { - if (_wroteCurrentEntry) - { - throw new ArgumentException( - "WriteEntryToAsync or OpenEntryStreamAsync can only be called once." - ); - } - var stream = await GetEntryStreamAsync(cancellationToken).ConfigureAwait(false); - _wroteCurrentEntry = true; - return stream; - } - /// /// Retains a reference to the entry stream, so we can check whether it completed later. /// @@ -424,17 +253,6 @@ protected EntryStream CreateEntryStream(Stream? decompressed) => protected virtual EntryStream GetEntryStream() => CreateEntryStream(Entry.Parts.First().GetCompressedStream()); - protected virtual async Task GetEntryStreamAsync( - CancellationToken cancellationToken = default - ) - { - var stream = await Entry - .Parts.First() - .GetCompressedStreamAsync(cancellationToken) - .ConfigureAwait(false); - return CreateEntryStream(stream); - } - #endregion IEntry IReader.Entry => Entry; diff --git a/src/SharpCompress/Readers/Ace/AceReader.Factory.cs b/src/SharpCompress/Readers/Ace/AceReader.Factory.cs index 653ff021c..8daa344e0 100644 --- a/src/SharpCompress/Readers/Ace/AceReader.Factory.cs +++ b/src/SharpCompress/Readers/Ace/AceReader.Factory.cs @@ -1,12 +1,39 @@ -#if NET8_0_OR_GREATER +using System.Collections.Generic; using System.IO; using System.Threading; using SharpCompress.Common; namespace SharpCompress.Readers.Ace; -public partial class AceReader : IReaderOpenable +public partial class AceReader +#if NET8_0_OR_GREATER + : IReaderOpenable +#endif { + /// + /// Opens an AceReader for non-seeking usage with a single volume. + /// + /// The stream containing the ACE archive. + /// Reader options. + /// An AceReader instance. + public static IReader OpenReader(Stream stream, ReaderOptions? options = null) + { + stream.NotNull(nameof(stream)); + return new SingleVolumeAceReader(stream, options ?? new ReaderOptions()); + } + + /// + /// Opens an AceReader for Non-seeking usage with multiple volumes + /// + /// + /// + /// + public static IReader OpenReader(IEnumerable streams, ReaderOptions? options = null) + { + streams.NotNull(nameof(streams)); + return new MultiVolumeAceReader(streams, options ?? new ReaderOptions()); + } + public static IAsyncReader OpenAsyncReader( string path, ReaderOptions? readerOptions = null, @@ -28,6 +55,15 @@ public static IAsyncReader OpenAsyncReader( return (IAsyncReader)OpenReader(stream, readerOptions); } + public static IAsyncReader OpenAsyncReader( + IEnumerable streams, + ReaderOptions? options = null + ) + { + streams.NotNull(nameof(streams)); + return new MultiVolumeAceReader(streams, options ?? new ReaderOptions()); + } + public static IAsyncReader OpenAsyncReader( FileInfo fileInfo, ReaderOptions? readerOptions = null, @@ -50,4 +86,3 @@ public static IReader OpenReader(FileInfo fileInfo, ReaderOptions? readerOptions return OpenReader(fileInfo.OpenRead(), readerOptions); } } -#endif diff --git a/src/SharpCompress/Readers/Ace/AceReader.cs b/src/SharpCompress/Readers/Ace/AceReader.cs index 8a7835090..fb67c0be0 100644 --- a/src/SharpCompress/Readers/Ace/AceReader.cs +++ b/src/SharpCompress/Readers/Ace/AceReader.cs @@ -1,115 +1,124 @@ -using System; using System.Collections.Generic; using System.IO; -using System.Linq; -using System.Text; -using System.Threading.Tasks; using SharpCompress.Common; using SharpCompress.Common.Ace; using SharpCompress.Common.Ace.Headers; -using SharpCompress.Common.Arj; -namespace SharpCompress.Readers.Ace +namespace SharpCompress.Readers.Ace; + +/// +/// Reader for ACE archives. +/// ACE is a proprietary archive format. This implementation supports both ACE 1.0 and ACE 2.0 formats +/// and can read archive metadata and extract uncompressed (stored) entries. +/// Compressed entries require proprietary decompression algorithms that are not publicly documented. +/// +/// +/// ACE 2.0 additions over ACE 1.0: +/// - Improved LZ77 compression (compression type 2) +/// - Recovery record support +/// - Additional header flags +/// +public abstract partial class AceReader : AbstractReader { + private readonly IArchiveEncoding _archiveEncoding; + + internal AceReader(ReaderOptions options) + : base(options, ArchiveType.Ace) + { + _archiveEncoding = Options.ArchiveEncoding; + } + + private AceReader(Stream stream, ReaderOptions options) + : this(options) { } + /// - /// Reader for ACE archives. - /// ACE is a proprietary archive format. This implementation supports both ACE 1.0 and ACE 2.0 formats - /// and can read archive metadata and extract uncompressed (stored) entries. - /// Compressed entries require proprietary decompression algorithms that are not publicly documented. + /// Derived class must create or manage the Volume itself. + /// AbstractReader.Volume is get-only, so it cannot be set here. /// - /// - /// ACE 2.0 additions over ACE 1.0: - /// - Improved LZ77 compression (compression type 2) - /// - Recovery record support - /// - Additional header flags - /// - public abstract partial class AceReader : AbstractReader + public override AceVolume? Volume => _volume; + + private AceVolume? _volume; + + protected abstract void ValidateArchive(AceVolume archive); + + protected override IEnumerable GetEntries(Stream stream) { - private readonly IArchiveEncoding _archiveEncoding; + var mainHeaderReader = new AceMainHeader(_archiveEncoding); + var mainHeader = mainHeaderReader.Read(stream); + if (mainHeader == null) + { + yield break; + } - internal AceReader(ReaderOptions options) - : base(options, ArchiveType.Ace) + if (mainHeader?.IsMultiVolume == true) { - _archiveEncoding = Options.ArchiveEncoding; + throw new MultiVolumeExtractionException("Multi volumes are currently not supported"); } - private AceReader(Stream stream, ReaderOptions options) - : this(options) { } + if (_volume == null) + { + _volume = new AceVolume(stream, Options, 0); + ValidateArchive(_volume); + } - /// - /// Derived class must create or manage the Volume itself. - /// AbstractReader.Volume is get-only, so it cannot be set here. - /// - public override AceVolume? Volume => _volume; + var localHeaderReader = new AceFileHeader(_archiveEncoding); + while (true) + { + var localHeader = localHeaderReader.Read(stream); + if (localHeader?.IsFileEncrypted == true) + { + throw new CryptographicException( + "Password protected archives are currently not supported" + ); + } + if (localHeader == null) + { + break; + } - private AceVolume? _volume; + yield return new AceEntry(new AceFilePart((AceFileHeader)localHeader, stream)); + } + } - /// - /// Opens an AceReader for non-seeking usage with a single volume. - /// - /// The stream containing the ACE archive. - /// Reader options. - /// An AceReader instance. - public static IReader OpenReader(Stream stream, ReaderOptions? options = null) + protected override async IAsyncEnumerable GetEntriesAsync(Stream stream) + { + var mainHeaderReader = new AceMainHeader(_archiveEncoding); + var mainHeader = await mainHeaderReader.ReadAsync(stream); + if (mainHeader == null) { - stream.NotNull(nameof(stream)); - return new SingleVolumeAceReader(stream, options ?? new ReaderOptions()); + yield break; } - /// - /// Opens an AceReader for Non-seeking usage with multiple volumes - /// - /// - /// - /// - public static IReader OpenReader(IEnumerable streams, ReaderOptions? options = null) + if (mainHeader?.IsMultiVolume == true) { - streams.NotNull(nameof(streams)); - return new MultiVolumeAceReader(streams, options ?? new ReaderOptions()); + throw new MultiVolumeExtractionException("Multi volumes are currently not supported"); } - protected abstract void ValidateArchive(AceVolume archive); - - protected override IEnumerable GetEntries(Stream stream) + if (_volume == null) { - var mainHeaderReader = new AceMainHeader(_archiveEncoding); - var mainHeader = mainHeaderReader.Read(stream); - if (mainHeader == null) - { - yield break; - } + _volume = new AceVolume(stream, Options, 0); + ValidateArchive(_volume); + } - if (mainHeader?.IsMultiVolume == true) + var localHeaderReader = new AceFileHeader(_archiveEncoding); + while (true) + { + var localHeader = await localHeaderReader.ReadAsync(stream); + if (localHeader?.IsFileEncrypted == true) { - throw new MultiVolumeExtractionException( - "Multi volumes are currently not supported" + throw new CryptographicException( + "Password protected archives are currently not supported" ); } - - if (_volume == null) + if (localHeader == null) { - _volume = new AceVolume(stream, Options, 0); - ValidateArchive(_volume); + break; } - var localHeaderReader = new AceFileHeader(_archiveEncoding); - while (true) - { - var localHeader = localHeaderReader.Read(stream); - if (localHeader?.IsFileEncrypted == true) - { - throw new CryptographicException( - "Password protected archives are currently not supported" - ); - } - if (localHeader == null) - break; - - yield return new AceEntry(new AceFilePart((AceFileHeader)localHeader, stream)); - } + yield return new AceEntry(new AceFilePart((AceFileHeader)localHeader, stream)); } - - protected virtual IEnumerable CreateFilePartEnumerableForCurrentEntry() => - Entry.Parts; } + + protected virtual IEnumerable CreateFilePartEnumerableForCurrentEntry() => + Entry.Parts; } diff --git a/src/SharpCompress/Readers/Arj/ArjReader.cs b/src/SharpCompress/Readers/Arj/ArjReader.cs index 94a891853..434fc0aba 100644 --- a/src/SharpCompress/Readers/Arj/ArjReader.cs +++ b/src/SharpCompress/Readers/Arj/ArjReader.cs @@ -1,6 +1,8 @@ using System; using System.Collections.Generic; using System.IO; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common; using SharpCompress.Common.Arj; using SharpCompress.Common.Arj.Headers; @@ -77,7 +79,47 @@ protected override IEnumerable GetEntries(Stream stream) { var localHeader = localHeaderReader.Read(stream); if (localHeader == null) + { break; + } + + yield return new ArjEntry(new ArjFilePart((ArjLocalHeader)localHeader, stream)); + } + } + + protected override async IAsyncEnumerable GetEntriesAsync(Stream stream) + { + var encoding = new ArchiveEncoding(); + var mainHeaderReader = new ArjMainHeader(encoding); + var localHeaderReader = new ArjLocalHeader(encoding); + + var mainHeader = await mainHeaderReader.ReadAsync(stream); + if (mainHeader?.IsVolume == true) + { + throw new MultiVolumeExtractionException( + "Multi volumes are currently not supported" + ); + } + if (mainHeader?.IsGabled == true) + { + throw new CryptographicException( + "Password protected archives are currently not supported" + ); + } + + if (_volume == null) + { + _volume = new ArjVolume(stream, Options, 0); + ValidateArchive(_volume); + } + + while (true) + { + var localHeader = await localHeaderReader.ReadAsync(stream); + if (localHeader == null) + { + break; + } yield return new ArjEntry(new ArjFilePart((ArjLocalHeader)localHeader, stream)); } diff --git a/src/SharpCompress/Readers/GZip/GZipReader.Async.cs b/src/SharpCompress/Readers/GZip/GZipReader.Async.cs new file mode 100644 index 000000000..720cb7921 --- /dev/null +++ b/src/SharpCompress/Readers/GZip/GZipReader.Async.cs @@ -0,0 +1,15 @@ +using System.Collections.Generic; +using System.IO; +using SharpCompress.Common; +using SharpCompress.Common.GZip; + +namespace SharpCompress.Readers.GZip; + +public partial class GZipReader +{ + /// + /// Returns entries asynchronously for streams that only support async reads. + /// + protected override IAsyncEnumerable GetEntriesAsync(Stream stream) => + GZipEntry.GetEntriesAsync(stream, Options); +} diff --git a/src/SharpCompress/Readers/GZip/GZipReader.Factory.cs b/src/SharpCompress/Readers/GZip/GZipReader.Factory.cs index 606298161..3132d139f 100644 --- a/src/SharpCompress/Readers/GZip/GZipReader.Factory.cs +++ b/src/SharpCompress/Readers/GZip/GZipReader.Factory.cs @@ -1,11 +1,12 @@ -#if NET8_0_OR_GREATER using System.IO; using System.Threading; -using SharpCompress.Common; namespace SharpCompress.Readers.GZip; -public partial class GZipReader : IReaderOpenable +public partial class GZipReader +#if NET8_0_OR_GREATER + : IReaderOpenable +#endif { public static IAsyncReader OpenAsyncReader( string path, @@ -49,5 +50,10 @@ public static IReader OpenReader(FileInfo fileInfo, ReaderOptions? readerOptions fileInfo.NotNull(nameof(fileInfo)); return OpenReader(fileInfo.OpenRead(), readerOptions); } + + public static IReader OpenReader(Stream stream, ReaderOptions? options = null) + { + stream.NotNull(nameof(stream)); + return new GZipReader(stream, options ?? new ReaderOptions()); + } } -#endif diff --git a/src/SharpCompress/Readers/GZip/GZipReader.cs b/src/SharpCompress/Readers/GZip/GZipReader.cs index 9fec5993a..eb09ab6c2 100644 --- a/src/SharpCompress/Readers/GZip/GZipReader.cs +++ b/src/SharpCompress/Readers/GZip/GZipReader.cs @@ -12,22 +12,8 @@ private GZipReader(Stream stream, ReaderOptions options) public override GZipVolume Volume { get; } - #region OpenReader - - /// - /// Opens a GZipReader for Non-seeking usage with a single volume - /// - /// - /// - /// - public static IReader OpenReader(Stream stream, ReaderOptions? options = null) - { - stream.NotNull(nameof(stream)); - return new GZipReader(stream, options ?? new ReaderOptions()); - } - - #endregion OpenReader - protected override IEnumerable GetEntries(Stream stream) => GZipEntry.GetEntries(stream, Options); + + // GetEntriesAsync moved to GZipReader.Async.cs } diff --git a/src/SharpCompress/Readers/IReaderFactory.cs b/src/SharpCompress/Readers/IReaderFactory.cs index 52e7d35e3..fb8c2e9f2 100644 --- a/src/SharpCompress/Readers/IReaderFactory.cs +++ b/src/SharpCompress/Readers/IReaderFactory.cs @@ -1,5 +1,6 @@ using System.IO; using System.Threading; +using System.Threading.Tasks; namespace SharpCompress.Readers; @@ -20,7 +21,7 @@ public interface IReaderFactory : Factories.IFactory /// /// /// - IAsyncReader OpenAsyncReader( + ValueTask OpenAsyncReader( Stream stream, ReaderOptions? options, CancellationToken cancellationToken diff --git a/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.Async.cs b/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.Async.cs new file mode 100644 index 000000000..7107adbaf --- /dev/null +++ b/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.Async.cs @@ -0,0 +1,84 @@ +#nullable disable + +using System.Collections; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar; + +namespace SharpCompress.Readers.Rar; + +internal partial class MultiVolumeRarReader : RarReader +{ + protected override IAsyncEnumerable CreateFilePartEnumerableForCurrentEntryAsync() + { + var enumerator = new MultiVolumeStreamAsyncEnumerator(this, streams, tempStream); + tempStream = null; + return enumerator; + } + + private class MultiVolumeStreamAsyncEnumerator + : IAsyncEnumerable, + IAsyncEnumerator + { + private readonly MultiVolumeRarReader reader; + private readonly IEnumerator nextReadableStreams; + private Stream tempStream; + private bool isFirst = true; + + internal MultiVolumeStreamAsyncEnumerator( + MultiVolumeRarReader r, + IEnumerator nextReadableStreams, + Stream tempStream + ) + { + reader = r; + this.nextReadableStreams = nextReadableStreams; + this.tempStream = tempStream; + } + + public FilePart Current { get; private set; } + + public async ValueTask MoveNextAsync() + { + if (isFirst) + { + Current = reader.Entry.Parts.First(); + isFirst = false; //first stream already to go + return true; + } + + if (!reader.Entry.IsSplitAfter) + { + return false; + } + if (tempStream != null) + { + await reader.LoadStreamForReadingAsync(tempStream); + tempStream = null; + } + else if (!nextReadableStreams.MoveNext()) + { + throw new MultiVolumeExtractionException( + "No stream provided when requested by MultiVolumeRarReader" + ); + } + else + { + await reader.LoadStreamForReadingAsync(nextReadableStreams.Current); + } + + Current = reader.Entry.Parts.First(); + return true; + } + + public IAsyncEnumerator GetAsyncEnumerator( + CancellationToken cancellationToken = new() + ) => this; + + public ValueTask DisposeAsync() => new(); + } +} diff --git a/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.cs b/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.cs index 556ca9f55..dd811bc51 100644 --- a/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.cs +++ b/src/SharpCompress/Readers/Rar/MultiVolumeRarReader.cs @@ -4,12 +4,14 @@ using System.Collections.Generic; using System.IO; using System.Linq; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common; using SharpCompress.Common.Rar; namespace SharpCompress.Readers.Rar; -internal class MultiVolumeRarReader : RarReader +internal partial class MultiVolumeRarReader : RarReader { private readonly IEnumerator streams; private Stream tempStream; @@ -47,6 +49,8 @@ protected override IEnumerable CreateFilePartEnumerableForCurrentEntry return enumerator; } + // Async method and MultiVolumeStreamAsyncEnumerator moved to MultiVolumeRarReader.Async.cs + private class MultiVolumeStreamEnumerator : IEnumerable, IEnumerator { private readonly MultiVolumeRarReader reader; diff --git a/src/SharpCompress/Readers/Rar/RarReader.Async.cs b/src/SharpCompress/Readers/Rar/RarReader.Async.cs new file mode 100644 index 000000000..0e1943d23 --- /dev/null +++ b/src/SharpCompress/Readers/Rar/RarReader.Async.cs @@ -0,0 +1,62 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Rar; +using SharpCompress.Compressors.Rar; + +namespace SharpCompress.Readers.Rar; + +public abstract partial class RarReader +{ + /// + /// Returns file parts asynchronously for the current entry. + /// Used for async stream operations in solid RAR archives. + /// + protected virtual IAsyncEnumerable CreateFilePartEnumerableForCurrentEntryAsync() => + Entry.Parts.ToAsyncEnumerable(); + + /// + /// Asynchronously creates an entry stream for the current entry. + /// Supports both RAR v3 and v5 archives with proper CRC verification. + /// + protected override async ValueTask GetEntryStreamAsync( + CancellationToken cancellationToken = default + ) + { + if (Entry.IsRedir) + { + throw new InvalidOperationException("no stream for redirect entry"); + } + + var stream = await MultiVolumeReadOnlyAsyncStream.Create( + CreateFilePartEnumerableForCurrentEntryAsync().CastAsync() + ); + if (Entry.IsRarV3) + { + return CreateEntryStream( + await RarCrcStream + .CreateAsync(UnpackV1.Value, Entry.FileHeader, stream, cancellationToken) + .ConfigureAwait(false) + ); + } + + if (Entry.FileHeader.FileCrc?.Length > 5) + { + return CreateEntryStream( + await RarBLAKE2spStream + .CreateAsync(UnpackV2017.Value, Entry.FileHeader, stream, cancellationToken) + .ConfigureAwait(false) + ); + } + + return CreateEntryStream( + await RarCrcStream + .CreateAsync(UnpackV2017.Value, Entry.FileHeader, stream, cancellationToken) + .ConfigureAwait(false) + ); + } +} diff --git a/src/SharpCompress/Readers/Rar/RarReader.cs b/src/SharpCompress/Readers/Rar/RarReader.cs index 34c64d1c3..949263d8f 100644 --- a/src/SharpCompress/Readers/Rar/RarReader.cs +++ b/src/SharpCompress/Readers/Rar/RarReader.cs @@ -125,40 +125,5 @@ protected override EntryStream GetEntryStream() return CreateEntryStream(RarCrcStream.Create(UnpackV2017.Value, Entry.FileHeader, stream)); } - protected override async System.Threading.Tasks.Task GetEntryStreamAsync( - System.Threading.CancellationToken cancellationToken = default - ) - { - if (Entry.IsRedir) - { - throw new InvalidOperationException("no stream for redirect entry"); - } - - var stream = new MultiVolumeReadOnlyStream( - CreateFilePartEnumerableForCurrentEntry().Cast() - ); - if (Entry.IsRarV3) - { - return CreateEntryStream( - await RarCrcStream - .CreateAsync(UnpackV1.Value, Entry.FileHeader, stream, cancellationToken) - .ConfigureAwait(false) - ); - } - - if (Entry.FileHeader.FileCrc?.Length > 5) - { - return CreateEntryStream( - await RarBLAKE2spStream - .CreateAsync(UnpackV2017.Value, Entry.FileHeader, stream, cancellationToken) - .ConfigureAwait(false) - ); - } - - return CreateEntryStream( - await RarCrcStream - .CreateAsync(UnpackV2017.Value, Entry.FileHeader, stream, cancellationToken) - .ConfigureAwait(false) - ); - } + // GetEntryStreamAsync moved to RarReader.Async.cs } diff --git a/src/SharpCompress/Readers/Rar/RarReaderVolume.cs b/src/SharpCompress/Readers/Rar/RarReaderVolume.cs index d614260a7..d38ea5245 100644 --- a/src/SharpCompress/Readers/Rar/RarReaderVolume.cs +++ b/src/SharpCompress/Readers/Rar/RarReaderVolume.cs @@ -1,5 +1,7 @@ using System.Collections.Generic; using System.IO; +using System.Threading; +using System.Threading.Tasks; using SharpCompress.Common.Rar; using SharpCompress.Common.Rar.Headers; using SharpCompress.IO; @@ -15,4 +17,7 @@ internal override RarFilePart CreateFilePart(MarkHeader markHeader, FileHeader f new NonSeekableStreamFilePart(markHeader, fileHeader, Index); internal override IEnumerable ReadFileParts() => GetVolumeFileParts(); + + internal override IAsyncEnumerable ReadFilePartsAsync() => + GetVolumeFilePartsAsync(); } diff --git a/src/SharpCompress/Readers/ReaderFactory.Async.cs b/src/SharpCompress/Readers/ReaderFactory.Async.cs new file mode 100644 index 000000000..b879b2ba8 --- /dev/null +++ b/src/SharpCompress/Readers/ReaderFactory.Async.cs @@ -0,0 +1,107 @@ +using System; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Factories; +using SharpCompress.IO; + +namespace SharpCompress.Readers; + +public static partial class ReaderFactory +{ + /// + /// Opens a Reader from a filepath asynchronously + /// + /// + /// + /// + /// + public static ValueTask OpenAsyncReader( + string filePath, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + filePath.NotNullOrEmpty(nameof(filePath)); + return OpenAsyncReader(new FileInfo(filePath), options, cancellationToken); + } + + /// + /// Opens a Reader from a FileInfo asynchronously + /// + /// + /// + /// + /// + public static ValueTask OpenAsyncReader( + FileInfo fileInfo, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + options ??= new ReaderOptions { LeaveStreamOpen = false }; + return OpenAsyncReader(fileInfo.OpenRead(), options, cancellationToken); + } + + public static async ValueTask OpenAsyncReader( + Stream stream, + ReaderOptions? options = null, + CancellationToken cancellationToken = default + ) + { + stream.NotNull(nameof(stream)); + options ??= new ReaderOptions() { LeaveStreamOpen = false }; + + var bStream = new SharpCompressStream(stream, bufferSize: options.BufferSize); + long pos = bStream.GetPosition(); + + var factories = Factory.Factories.OfType(); + + Factory? testedFactory = null; + if (!string.IsNullOrWhiteSpace(options.ExtensionHint)) + { + testedFactory = factories.FirstOrDefault(a => + a.GetSupportedExtensions() + .Contains(options.ExtensionHint, StringComparer.CurrentCultureIgnoreCase) + ); + if (testedFactory is IReaderFactory readerFactory) + { + bStream.StackSeek(pos); + if ( + await testedFactory.IsArchiveAsync( + bStream, + cancellationToken: cancellationToken + ) + ) + { + bStream.StackSeek(pos); + return await readerFactory.OpenAsyncReader(bStream, options, cancellationToken); + } + } + bStream.StackSeek(pos); + } + + foreach (var factory in factories) + { + if (testedFactory == factory) + { + continue; // Already tested above + } + bStream.StackSeek(pos); + if ( + factory is IReaderFactory readerFactory + && await factory.IsArchiveAsync(bStream, cancellationToken: cancellationToken) + ) + { + bStream.StackSeek(pos); + return await readerFactory.OpenAsyncReader(bStream, options, cancellationToken); + } + } + + throw new InvalidFormatException( + "Cannot determine compressed stream type. Supported Reader Formats: Arc, Arj, Zip, GZip, BZip2, Tar, Rar, LZip, XZ, ZStandard" + ); + } +} diff --git a/src/SharpCompress/Readers/ReaderFactory.cs b/src/SharpCompress/Readers/ReaderFactory.cs index acd4e96bd..b5c9b2943 100644 --- a/src/SharpCompress/Readers/ReaderFactory.cs +++ b/src/SharpCompress/Readers/ReaderFactory.cs @@ -9,7 +9,7 @@ namespace SharpCompress.Readers; -public static class ReaderFactory +public static partial class ReaderFactory { public static IReader OpenReader(string filePath, ReaderOptions? options = null) { @@ -17,46 +17,12 @@ public static IReader OpenReader(string filePath, ReaderOptions? options = null) return OpenReader(new FileInfo(filePath), options); } - /// - /// Opens a Reader from a filepath asynchronously - /// - /// - /// - /// - /// - public static IAsyncReader OpenAsyncReader( - string filePath, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - filePath.NotNullOrEmpty(nameof(filePath)); - return OpenAsyncReader(new FileInfo(filePath), options, cancellationToken); - } - public static IReader OpenReader(FileInfo fileInfo, ReaderOptions? options = null) { options ??= new ReaderOptions { LeaveStreamOpen = false }; return OpenReader(fileInfo.OpenRead(), options); } - /// - /// Opens a Reader from a FileInfo asynchronously - /// - /// - /// - /// - /// - public static IAsyncReader OpenAsyncReader( - FileInfo fileInfo, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - options ??= new ReaderOptions { LeaveStreamOpen = false }; - return OpenAsyncReader(fileInfo.OpenRead(), options, cancellationToken); - } - /// /// Opens a Reader for Non-seeking usage /// @@ -70,7 +36,7 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) var bStream = new SharpCompressStream(stream, bufferSize: options.BufferSize); - long pos = ((IStreamStack)bStream).GetPosition(); + long pos = bStream.GetPosition(); var factories = Factories.Factory.Factories.OfType(); @@ -89,7 +55,7 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) { return reader; } - ((IStreamStack)bStream).StackSeek(pos); + bStream.StackSeek(pos); } foreach (var factory in factories) @@ -98,7 +64,7 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) { continue; // Already tested above } - ((IStreamStack)bStream).StackSeek(pos); + bStream.StackSeek(pos); if (factory.TryOpenReader(bStream, options, out var reader) && reader != null) { return reader; @@ -110,57 +76,5 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) ); } - public static IAsyncReader OpenAsyncReader( - Stream stream, - ReaderOptions? options = null, - CancellationToken cancellationToken = default - ) - { - stream.NotNull(nameof(stream)); - options ??= new ReaderOptions() { LeaveStreamOpen = false }; - - var bStream = new SharpCompressStream(stream, bufferSize: options.BufferSize); - - long pos = ((IStreamStack)bStream).GetPosition(); - - var factories = Factories.Factory.Factories.OfType(); - - Factory? testedFactory = null; - - if (!string.IsNullOrWhiteSpace(options.ExtensionHint)) - { - testedFactory = factories.FirstOrDefault(a => - a.GetSupportedExtensions() - .Contains(options.ExtensionHint, StringComparer.CurrentCultureIgnoreCase) - ); - if (testedFactory is IReaderFactory readerFactory) - { - ((IStreamStack)bStream).StackSeek(pos); - if (testedFactory.IsArchive(bStream)) - { - ((IStreamStack)bStream).StackSeek(pos); - return readerFactory.OpenAsyncReader(bStream, options, cancellationToken); - } - } - ((IStreamStack)bStream).StackSeek(pos); - } - - foreach (var factory in factories) - { - if (testedFactory == factory) - { - continue; // Already tested above - } - ((IStreamStack)bStream).StackSeek(pos); - if (factory is IReaderFactory readerFactory && factory.IsArchive(bStream)) - { - ((IStreamStack)bStream).StackSeek(pos); - return readerFactory.OpenAsyncReader(bStream, options, cancellationToken); - } - } - - throw new InvalidFormatException( - "Cannot determine compressed stream type. Supported Reader Formats: Arc, Arj, Zip, GZip, BZip2, Tar, Rar, LZip, XZ, ZStandard" - ); - } + // Async methods moved to ReaderFactory.Async.cs } diff --git a/src/SharpCompress/Readers/Tar/TarReader.Async.cs b/src/SharpCompress/Readers/Tar/TarReader.Async.cs new file mode 100644 index 000000000..60026308b --- /dev/null +++ b/src/SharpCompress/Readers/Tar/TarReader.Async.cs @@ -0,0 +1,31 @@ +using System.Collections.Generic; +using System.IO; +using SharpCompress.Archives.GZip; +using SharpCompress.Archives.Tar; +using SharpCompress.Common; +using SharpCompress.Common.Tar; +using SharpCompress.Compressors; +using SharpCompress.Compressors.BZip2; +using SharpCompress.Compressors.Deflate; +using SharpCompress.Compressors.LZMA; +using SharpCompress.Compressors.Lzw; +using SharpCompress.Compressors.Xz; +using SharpCompress.Compressors.ZStandard; +using SharpCompress.IO; + +namespace SharpCompress.Readers.Tar; + +public partial class TarReader +{ + /// + /// Returns entries asynchronously for streams that only support async reads. + /// Uses async decompression for compressed tar archives (gzip, bzip2, zstandard, etc.). + /// + protected override IAsyncEnumerable GetEntriesAsync(Stream stream) => + TarEntry.GetEntriesAsync( + StreamingMode.Streaming, + stream, + compressionType, + Options.ArchiveEncoding + ); +} diff --git a/src/SharpCompress/Readers/Tar/TarReader.Factory.cs b/src/SharpCompress/Readers/Tar/TarReader.Factory.cs index 9a85c4afd..801440a70 100644 --- a/src/SharpCompress/Readers/Tar/TarReader.Factory.cs +++ b/src/SharpCompress/Readers/Tar/TarReader.Factory.cs @@ -1,11 +1,13 @@ -#if NET8_0_OR_GREATER using System.IO; using System.Threading; using SharpCompress.Common; namespace SharpCompress.Readers.Tar; -public partial class TarReader : IReaderOpenable +public partial class TarReader +#if NET8_0_OR_GREATER + : IReaderOpenable +#endif { public static IAsyncReader OpenAsyncReader( string path, @@ -50,4 +52,3 @@ public static IReader OpenReader(FileInfo fileInfo, ReaderOptions? readerOptions return OpenReader(fileInfo.OpenRead(), readerOptions); } } -#endif diff --git a/src/SharpCompress/Readers/Tar/TarReader.cs b/src/SharpCompress/Readers/Tar/TarReader.cs index 7f53961f2..be9bf45d6 100644 --- a/src/SharpCompress/Readers/Tar/TarReader.cs +++ b/src/SharpCompress/Readers/Tar/TarReader.cs @@ -34,7 +34,7 @@ protected override Stream RequestInitialStream() var stream = base.RequestInitialStream(); return compressionType switch { - CompressionType.BZip2 => new BZip2Stream(stream, CompressionMode.Decompress, false), + CompressionType.BZip2 => BZip2Stream.Create(stream, CompressionMode.Decompress, false), CompressionType.GZip => new GZipStream(stream, CompressionMode.Decompress), CompressionType.ZStandard => new ZStandardStream(stream), CompressionType.LZip => new LZipStream(stream, CompressionMode.Decompress), @@ -58,9 +58,7 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) stream.NotNull(nameof(stream)); options = options ?? new ReaderOptions(); var rewindableStream = new SharpCompressStream(stream); - long pos = ((IStreamStack)rewindableStream).GetPosition(); - if (GZipArchive.IsGZipFile(rewindableStream)) { ((IStreamStack)rewindableStream).StackSeek(pos); @@ -72,12 +70,15 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) } throw new InvalidFormatException("Not a tar file."); } - ((IStreamStack)rewindableStream).StackSeek(pos); if (BZip2Stream.IsBZip2(rewindableStream)) { ((IStreamStack)rewindableStream).StackSeek(pos); - var testStream = new BZip2Stream(rewindableStream, CompressionMode.Decompress, false); + var testStream = BZip2Stream.Create( + rewindableStream, + CompressionMode.Decompress, + false + ); if (TarArchive.IsTarFile(testStream)) { ((IStreamStack)rewindableStream).StackSeek(pos); @@ -85,7 +86,6 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) } throw new InvalidFormatException("Not a tar file."); } - ((IStreamStack)rewindableStream).StackSeek(pos); if (ZStandardStream.IsZStandard(rewindableStream)) { @@ -110,7 +110,6 @@ public static IReader OpenReader(Stream stream, ReaderOptions? options = null) } throw new InvalidFormatException("Not a tar file."); } - ((IStreamStack)rewindableStream).StackSeek(pos); return new TarReader(rewindableStream, options, CompressionType.None); } @@ -124,4 +123,6 @@ protected override IEnumerable GetEntries(Stream stream) => compressionType, Options.ArchiveEncoding ); + + // GetEntriesAsync moved to TarReader.Async.cs } diff --git a/src/SharpCompress/Readers/Zip/ZipReader.Async.cs b/src/SharpCompress/Readers/Zip/ZipReader.Async.cs new file mode 100644 index 000000000..b8c71eaa8 --- /dev/null +++ b/src/SharpCompress/Readers/Zip/ZipReader.Async.cs @@ -0,0 +1,106 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Zip; +using SharpCompress.Common.Zip.Headers; + +namespace SharpCompress.Readers.Zip; + +public partial class ZipReader +{ + /// + /// Adapts an async header sequence into an async entry sequence. + /// + private sealed class ZipEntryAsyncEnumerable : IAsyncEnumerable + { + private readonly StreamingZipHeaderFactory _headerFactory; + private readonly Stream _stream; + + public ZipEntryAsyncEnumerable(StreamingZipHeaderFactory headerFactory, Stream stream) + { + _headerFactory = headerFactory; + _stream = stream; + } + + public IAsyncEnumerator GetAsyncEnumerator( + CancellationToken cancellationToken = default + ) => new ZipEntryAsyncEnumerator(_headerFactory, _stream, cancellationToken); + } + + /// + /// Yields entries from streaming ZIP headers without requiring synchronous stream reads. + /// + private sealed class ZipEntryAsyncEnumerator : IAsyncEnumerator, IDisposable + { + private readonly Stream _stream; + private readonly IAsyncEnumerator _headerEnumerator; + private ZipEntry? _current; + + public ZipEntryAsyncEnumerator( + StreamingZipHeaderFactory headerFactory, + Stream stream, + CancellationToken cancellationToken + ) + { + _stream = stream; + _headerEnumerator = headerFactory + .ReadStreamHeaderAsync(stream) + .GetAsyncEnumerator(cancellationToken); + } + + public ZipEntry Current => + _current ?? throw new InvalidOperationException("No current entry is available."); + + /// + /// Advances to the next non-directory entry-relevant header and materializes a , + /// using async I/O for improved performance on non-seekable streams. + /// + public async ValueTask MoveNextAsync() + { + while (await _headerEnumerator.MoveNextAsync().ConfigureAwait(false)) + { + var header = _headerEnumerator.Current; + switch (header.ZipHeaderType) + { + case ZipHeaderType.LocalEntry: + _current = new ZipEntry( + new StreamingZipFilePart((LocalEntryHeader)header, _stream) + ); + return true; + case ZipHeaderType.DirectoryEntry: + // DirectoryEntry headers are intentionally skipped in streaming mode. + break; + case ZipHeaderType.DirectoryEnd: + _current = null; + return false; + } + } + + _current = null; + return false; + } + + /// + /// Disposes the underlying header enumerator asynchronously. + /// + public ValueTask DisposeAsync() + { + Dispose(); + return default; + } + + /// + /// Synchronously disposes the underlying header enumerator. + /// + public void Dispose() + { + if (_headerEnumerator is IDisposable disposable) + { + disposable.Dispose(); + } + } + } +} diff --git a/src/SharpCompress/Readers/Zip/ZipReader.cs b/src/SharpCompress/Readers/Zip/ZipReader.cs index 6c3df1815..83d0aa8c8 100644 --- a/src/SharpCompress/Readers/Zip/ZipReader.cs +++ b/src/SharpCompress/Readers/Zip/ZipReader.cs @@ -101,95 +101,5 @@ protected override IEnumerable GetEntries(Stream stream) protected override IAsyncEnumerable GetEntriesAsync(Stream stream) => new ZipEntryAsyncEnumerable(_headerFactory, stream); - /// - /// Adapts an async header sequence into an async entry sequence. - /// - private sealed class ZipEntryAsyncEnumerable : IAsyncEnumerable - { - private readonly StreamingZipHeaderFactory _headerFactory; - private readonly Stream _stream; - - public ZipEntryAsyncEnumerable(StreamingZipHeaderFactory headerFactory, Stream stream) - { - _headerFactory = headerFactory; - _stream = stream; - } - - public IAsyncEnumerator GetAsyncEnumerator( - CancellationToken cancellationToken = default - ) => new ZipEntryAsyncEnumerator(_headerFactory, _stream, cancellationToken); - } - - /// - /// Yields entries from streaming ZIP headers without requiring synchronous stream reads. - /// - private sealed class ZipEntryAsyncEnumerator : IAsyncEnumerator, IDisposable - { - private readonly Stream _stream; - private readonly IAsyncEnumerator _headerEnumerator; - private ZipEntry? _current; - - public ZipEntryAsyncEnumerator( - StreamingZipHeaderFactory headerFactory, - Stream stream, - CancellationToken cancellationToken - ) - { - _stream = stream; - _headerEnumerator = headerFactory - .ReadStreamHeaderAsync(stream) - .GetAsyncEnumerator(cancellationToken); - } - - public ZipEntry Current => - _current ?? throw new InvalidOperationException("No current entry is available."); - - /// - /// Advances to the next non-directory entry-relevant header and materializes a . - /// - public async ValueTask MoveNextAsync() - { - while (await _headerEnumerator.MoveNextAsync().ConfigureAwait(false)) - { - var header = _headerEnumerator.Current; - switch (header.ZipHeaderType) - { - case ZipHeaderType.LocalEntry: - _current = new ZipEntry( - new StreamingZipFilePart((LocalEntryHeader)header, _stream) - ); - return true; - case ZipHeaderType.DirectoryEntry: - // DirectoryEntry headers are intentionally skipped in streaming mode. - break; - case ZipHeaderType.DirectoryEnd: - _current = null; - return false; - } - } - - _current = null; - return false; - } - - /// - /// Disposes the underlying header enumerator. - /// - public ValueTask DisposeAsync() - { - Dispose(); - return default; - } - - /// - /// Disposes the underlying header enumerator. - /// - public void Dispose() - { - if (_headerEnumerator is IDisposable disposable) - { - disposable.Dispose(); - } - } - } + // Async nested classes moved to ZipReader.Async.cs } diff --git a/src/SharpCompress/Utility.Async.cs b/src/SharpCompress/Utility.Async.cs new file mode 100644 index 000000000..be417fd65 --- /dev/null +++ b/src/SharpCompress/Utility.Async.cs @@ -0,0 +1,55 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; + +namespace SharpCompress; + +internal static partial class Utility +{ + /// + /// Read exactly the requested number of bytes from a stream asynchronously. Throws EndOfStreamException if not enough data is available. + /// + public static async ValueTask ReadExactAsync( + this Stream stream, + byte[] buffer, + int offset, + int length, + CancellationToken cancellationToken = default + ) + { + if (stream is null) + { + throw new ArgumentNullException(nameof(stream)); + } + + if (buffer is null) + { + throw new ArgumentNullException(nameof(buffer)); + } + + if (offset < 0 || offset > buffer.Length) + { + throw new ArgumentOutOfRangeException(nameof(offset)); + } + + if (length < 0 || length > buffer.Length - offset) + { + throw new ArgumentOutOfRangeException(nameof(length)); + } + + while (length > 0) + { + var fetched = await stream + .ReadAsync(buffer, offset, length, cancellationToken) + .ConfigureAwait(false); + if (fetched <= 0) + { + throw new EndOfStreamException(); + } + + offset += fetched; + length -= fetched; + } + } +} diff --git a/src/SharpCompress/Utility.cs b/src/SharpCompress/Utility.cs index 5b3ed2ddc..649e9280b 100644 --- a/src/SharpCompress/Utility.cs +++ b/src/SharpCompress/Utility.cs @@ -9,7 +9,7 @@ namespace SharpCompress; -internal static class Utility +internal static partial class Utility { //80kb is a good industry standard temporary buffer size internal const int TEMP_BUFFER_SIZE = 81920; @@ -336,51 +336,7 @@ public static void ReadExact(this Stream stream, byte[] buffer, int offset, int } } - /// - /// Read exactly the requested number of bytes from a stream asynchronously. Throws EndOfStreamException if not enough data is available. - /// - public static async ValueTask ReadExactAsync( - this Stream stream, - byte[] buffer, - int offset, - int length, - CancellationToken cancellationToken = default - ) - { - if (stream is null) - { - throw new ArgumentNullException(nameof(stream)); - } - - if (buffer is null) - { - throw new ArgumentNullException(nameof(buffer)); - } - - if (offset < 0 || offset > buffer.Length) - { - throw new ArgumentOutOfRangeException(nameof(offset)); - } - - if (length < 0 || length > buffer.Length - offset) - { - throw new ArgumentOutOfRangeException(nameof(length)); - } - - while (length > 0) - { - var fetched = await stream - .ReadAsync(buffer, offset, length, cancellationToken) - .ConfigureAwait(false); - if (fetched <= 0) - { - throw new EndOfStreamException(); - } - - offset += fetched; - length -= fetched; - } - } + // Async methods moved to Utility.Async.cs public static string TrimNulls(this string source) => source.Replace('\0', ' ').Trim(); diff --git a/src/SharpCompress/Writers/AbstractWriter.Async.cs b/src/SharpCompress/Writers/AbstractWriter.Async.cs new file mode 100644 index 000000000..c0d94de7e --- /dev/null +++ b/src/SharpCompress/Writers/AbstractWriter.Async.cs @@ -0,0 +1,35 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; + +namespace SharpCompress.Writers; + +public abstract partial class AbstractWriter +{ + public abstract ValueTask WriteAsync( + string filename, + Stream source, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ); + + public abstract ValueTask WriteDirectoryAsync( + string directoryName, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ); + + public ValueTask DisposeAsync() + { + if (!_isDisposed) + { + GC.SuppressFinalize(this); + Dispose(true); + _isDisposed = true; + } + + return new(); + } +} diff --git a/src/SharpCompress/Writers/AbstractWriter.cs b/src/SharpCompress/Writers/AbstractWriter.cs index 63511afad..d9967ceb8 100644 --- a/src/SharpCompress/Writers/AbstractWriter.cs +++ b/src/SharpCompress/Writers/AbstractWriter.cs @@ -8,7 +8,7 @@ namespace SharpCompress.Writers; #pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable. -public abstract class AbstractWriter(ArchiveType type, WriterOptions writerOptions) +public abstract partial class AbstractWriter(ArchiveType type, WriterOptions writerOptions) : IWriter, IAsyncWriter { @@ -50,33 +50,8 @@ protected Stream WrapWithProgress(Stream source, string entryPath) public abstract void Write(string filename, Stream source, DateTime? modificationTime); - public virtual async ValueTask WriteAsync( - string filename, - Stream source, - DateTime? modificationTime, - CancellationToken cancellationToken = default - ) - { - // Default implementation calls synchronous version - // Derived classes should override for true async behavior - Write(filename, source, modificationTime); - await Task.CompletedTask.ConfigureAwait(false); - } - public abstract void WriteDirectory(string directoryName, DateTime? modificationTime); - public virtual async ValueTask WriteDirectoryAsync( - string directoryName, - DateTime? modificationTime, - CancellationToken cancellationToken = default - ) - { - // Default implementation calls synchronous version - // Derived classes should override for true async behavior - WriteDirectory(directoryName, modificationTime); - await Task.CompletedTask.ConfigureAwait(false); - } - protected virtual void Dispose(bool isDisposing) { if (isDisposing) diff --git a/src/SharpCompress/Writers/GZip/GZipWriter.Async.cs b/src/SharpCompress/Writers/GZip/GZipWriter.Async.cs new file mode 100644 index 000000000..81b9d8256 --- /dev/null +++ b/src/SharpCompress/Writers/GZip/GZipWriter.Async.cs @@ -0,0 +1,39 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.Deflate; + +namespace SharpCompress.Writers.GZip; + +public partial class GZipWriter +{ + public override async ValueTask WriteAsync( + string filename, + Stream source, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ) + { + if (_wroteToStream) + { + throw new ArgumentException("Can only write a single stream to a GZip file."); + } + var stream = (GZipStream)OutputStream; + stream.FileName = filename; + stream.LastModified = modificationTime; + var progressStream = WrapWithProgress(source, filename); +#if LEGACY_DOTNET + await progressStream.CopyToAsync(stream); +#else + await progressStream.CopyToAsync(stream, cancellationToken); +#endif + _wroteToStream = true; + } + + public override ValueTask WriteDirectoryAsync( + string directoryName, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ) => throw new NotSupportedException("GZip archives do not support directory entries."); +} diff --git a/src/SharpCompress/Writers/IWriter.cs b/src/SharpCompress/Writers/IWriter.cs index c33a3bf07..648c0fe04 100644 --- a/src/SharpCompress/Writers/IWriter.cs +++ b/src/SharpCompress/Writers/IWriter.cs @@ -13,7 +13,7 @@ public interface IWriter : IDisposable void WriteDirectory(string directoryName, DateTime? modificationTime); } -public interface IAsyncWriter : IDisposable +public interface IAsyncWriter : IDisposable, IAsyncDisposable { ArchiveType WriterType { get; } ValueTask WriteAsync( diff --git a/src/SharpCompress/Writers/Tar/TarWriter.Async.cs b/src/SharpCompress/Writers/Tar/TarWriter.Async.cs new file mode 100644 index 000000000..5cc6c6220 --- /dev/null +++ b/src/SharpCompress/Writers/Tar/TarWriter.Async.cs @@ -0,0 +1,86 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Tar.Headers; + +namespace SharpCompress.Writers.Tar; + +public partial class TarWriter +{ + /// + /// Asynchronously writes a directory entry to the TAR archive. + /// + public override async ValueTask WriteDirectoryAsync( + string directoryName, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ) + { + var normalizedName = NormalizeDirectoryName(directoryName); + if (string.IsNullOrEmpty(normalizedName)) + { + return; + } + + var header = new TarHeader(WriterOptions.ArchiveEncoding); + header.LastModifiedTime = modificationTime ?? TarHeader.EPOCH; + header.Name = normalizedName; + header.Size = 0; + header.EntryType = EntryType.Directory; + await header.WriteAsync(OutputStream, cancellationToken).ConfigureAwait(false); + } + + /// + /// Asynchronously writes a file entry to the TAR archive. + /// + public override async ValueTask WriteAsync( + string filename, + Stream source, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ) => await WriteAsync(filename, source, modificationTime, null, cancellationToken); + + /// + /// Asynchronously writes a file entry with optional size specification. + /// + public async ValueTask WriteAsync( + string filename, + Stream source, + DateTime? modificationTime, + long? size, + CancellationToken cancellationToken = default + ) + { + if (!source.CanSeek && size is null) + { + throw new ArgumentException("Seekable stream is required if no size is given."); + } + + var realSize = size ?? source.Length; + + var header = new TarHeader(WriterOptions.ArchiveEncoding); + + header.LastModifiedTime = modificationTime ?? TarHeader.EPOCH; + header.Name = NormalizeFilename(filename); + header.Size = realSize; + await header.WriteAsync(OutputStream, cancellationToken).ConfigureAwait(false); + var progressStream = WrapWithProgress(source, filename); + var written = await progressStream + .TransferToAsync(OutputStream, realSize, cancellationToken) + .ConfigureAwait(false); + await PadTo512Async(written, cancellationToken).ConfigureAwait(false); + } + + private async ValueTask PadTo512Async(long size, CancellationToken cancellationToken = default) + { + var zeros = unchecked((int)(((size + 511L) & ~511L) - size)); + if (zeros > 0) + { + await OutputStream + .WriteAsync(new byte[zeros], 0, zeros, cancellationToken) + .ConfigureAwait(false); + } + } +} diff --git a/src/SharpCompress/Writers/Tar/TarWriter.cs b/src/SharpCompress/Writers/Tar/TarWriter.cs index ac16e66f2..932b09d56 100644 --- a/src/SharpCompress/Writers/Tar/TarWriter.cs +++ b/src/SharpCompress/Writers/Tar/TarWriter.cs @@ -37,7 +37,7 @@ public TarWriter(Stream destination, TarWriterOptions options) break; case CompressionType.BZip2: { - destination = new BZip2Stream(destination, CompressionMode.Compress, false); + destination = BZip2Stream.Create(destination, CompressionMode.Compress, false); } break; case CompressionType.GZip: @@ -103,17 +103,6 @@ public override void WriteDirectory(string directoryName, DateTime? modification header.Write(OutputStream); } - public override async ValueTask WriteDirectoryAsync( - string directoryName, - DateTime? modificationTime, - CancellationToken cancellationToken = default - ) - { - // Synchronous implementation is sufficient for header-only write - WriteDirectory(directoryName, modificationTime); - await Task.CompletedTask.ConfigureAwait(false); - } - public void Write(string filename, Stream source, DateTime? modificationTime, long? size) { if (!source.CanSeek && size is null) @@ -134,41 +123,6 @@ public void Write(string filename, Stream source, DateTime? modificationTime, lo PadTo512(size.Value); } - public override async ValueTask WriteAsync( - string filename, - Stream source, - DateTime? modificationTime, - CancellationToken cancellationToken = default - ) => await WriteAsync(filename, source, modificationTime, null, cancellationToken); - - public async ValueTask WriteAsync( - string filename, - Stream source, - DateTime? modificationTime, - long? size, - CancellationToken cancellationToken = default - ) - { - if (!source.CanSeek && size is null) - { - throw new ArgumentException("Seekable stream is required if no size is given."); - } - - var realSize = size ?? source.Length; - - var header = new TarHeader(WriterOptions.ArchiveEncoding); - - header.LastModifiedTime = modificationTime ?? TarHeader.EPOCH; - header.Name = NormalizeFilename(filename); - header.Size = realSize; - header.Write(OutputStream); - var progressStream = WrapWithProgress(source, filename); - var written = await progressStream - .TransferToAsync(OutputStream, realSize, cancellationToken) - .ConfigureAwait(false); - PadTo512(written); - } - private void PadTo512(long size) { var zeros = unchecked((int)(((size + 511L) & ~511L) - size)); diff --git a/src/SharpCompress/Writers/Tar/TarWriterOptions.cs b/src/SharpCompress/Writers/Tar/TarWriterOptions.cs index a8c3a29e4..82a0f0c79 100755 --- a/src/SharpCompress/Writers/Tar/TarWriterOptions.cs +++ b/src/SharpCompress/Writers/Tar/TarWriterOptions.cs @@ -24,5 +24,10 @@ public TarWriterOptions( } internal TarWriterOptions(WriterOptions options) - : this(options.CompressionType, true) => ArchiveEncoding = options.ArchiveEncoding; + : this(options.CompressionType, true) + { + LeaveStreamOpen = options.LeaveStreamOpen; + CompressionLevel = options.CompressionLevel; + ArchiveEncoding = options.ArchiveEncoding; + } } diff --git a/src/SharpCompress/Writers/Zip/ZipWriter.Async.cs b/src/SharpCompress/Writers/Zip/ZipWriter.Async.cs new file mode 100644 index 000000000..53c1af452 --- /dev/null +++ b/src/SharpCompress/Writers/Zip/ZipWriter.Async.cs @@ -0,0 +1,63 @@ +using System; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Common; +using SharpCompress.Common.Zip; +using SharpCompress.Common.Zip.Headers; + +namespace SharpCompress.Writers.Zip; + +public partial class ZipWriter +{ + /// + /// Asynchronously writes an entry to the ZIP archive. + /// + public override async ValueTask WriteAsync( + string entryPath, + Stream source, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + await WriteAsync( + entryPath, + source, + new ZipWriterEntryOptions { ModificationDateTime = modificationTime }, + cancellationToken + ) + .ConfigureAwait(false); + } + + /// + /// Asynchronously writes an entry to the ZIP archive with specified options. + /// + public async ValueTask WriteAsync( + string entryPath, + Stream source, + ZipWriterEntryOptions zipWriterEntryOptions, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + using var output = WriteToStream(entryPath, zipWriterEntryOptions); + var progressStream = WrapWithProgress(source, entryPath); + await progressStream.CopyToAsync(output, 81920, cancellationToken).ConfigureAwait(false); + } + + /// + /// Asynchronously writes a directory entry to the ZIP archive. + /// Uses synchronous implementation for directory entries as they are lightweight. + /// + public override async ValueTask WriteDirectoryAsync( + string directoryName, + DateTime? modificationTime, + CancellationToken cancellationToken = default + ) + { + cancellationToken.ThrowIfCancellationRequested(); + WriteDirectory(directoryName, modificationTime); + await Task.CompletedTask.ConfigureAwait(false); + } +} diff --git a/src/SharpCompress/Writers/Zip/ZipWriter.cs b/src/SharpCompress/Writers/Zip/ZipWriter.cs index dc8929b8e..be82f1d9f 100644 --- a/src/SharpCompress/Writers/Zip/ZipWriter.cs +++ b/src/SharpCompress/Writers/Zip/ZipWriter.cs @@ -52,7 +52,7 @@ public ZipWriter(Stream destination, ZipWriterOptions zipWriterOptions) protected override void Dispose(bool isDisposing) { - if (isDisposing && OutputStream is not null) + if (isDisposing) { ulong size = 0; foreach (var entry in entries) @@ -162,16 +162,7 @@ public override void WriteDirectory(string directoryName, DateTime? modification WriteDirectoryEntry(normalizedName, options); } - public override async ValueTask WriteDirectoryAsync( - string directoryName, - DateTime? modificationTime, - CancellationToken cancellationToken = default - ) - { - // Synchronous implementation is sufficient for directory entries - WriteDirectory(directoryName, modificationTime); - await Task.CompletedTask.ConfigureAwait(false); - } + // WriteDirectoryAsync moved to ZipWriter.Async.cs private void WriteDirectoryEntry(string directoryPath, ZipWriterEntryOptions options) { @@ -443,7 +434,7 @@ private Stream GetWriteStream(Stream writeStream) } case ZipCompressionMethod.BZip2: { - return new BZip2Stream(counting, CompressionMode.Compress, false); + return BZip2Stream.Create(counting, CompressionMode.Compress, false); } case ZipCompressionMethod.LZMA: { @@ -452,7 +443,7 @@ private Stream GetWriteStream(Stream writeStream) counting.WriteByte(5); counting.WriteByte(0); - var lzmaStream = new LzmaStream( + var lzmaStream = LzmaStream.Create( new LzmaEncoderProperties(!originalStream.CanSeek), false, counting diff --git a/src/SharpCompress/Writers/Zip/ZipWriterOptions.cs b/src/SharpCompress/Writers/Zip/ZipWriterOptions.cs index 9aa80dd17..524ea7eb8 100644 --- a/src/SharpCompress/Writers/Zip/ZipWriterOptions.cs +++ b/src/SharpCompress/Writers/Zip/ZipWriterOptions.cs @@ -46,10 +46,12 @@ public void SetDeflateCompressionLevel(CompressionLevel level) public void SetZStandardCompressionLevel(int level) { if (level < 1 || level > 22) + { throw new ArgumentOutOfRangeException( nameof(level), "ZStandard compression level must be between 1 and 22" ); + } CompressionLevel = level; } diff --git a/tests/SharpCompress.Performance/LargeMemoryStream.cs b/tests/SharpCompress.Performance/LargeMemoryStream.cs index 7784f403b..6822e5d01 100644 --- a/tests/SharpCompress.Performance/LargeMemoryStream.cs +++ b/tests/SharpCompress.Performance/LargeMemoryStream.cs @@ -23,7 +23,9 @@ public class LargeMemoryStream : Stream public LargeMemoryStream(int chunkSize = 1024 * 1024) { if (chunkSize <= 0) + { throw new ArgumentException("Chunk size must be greater than zero.", nameof(chunkSize)); + } _chunks = new List(); _chunkSize = chunkSize; @@ -42,7 +44,9 @@ public override long Length { ThrowIfDisposed(); if (_chunks.Count == 0) + { return 0; + } long length = (long)(_chunks.Count - 1) * _chunkSize; length += _chunks[_chunks.Count - 1].Length; @@ -61,10 +65,13 @@ public override long Position { ThrowIfDisposed(); if (value < 0) + { throw new ArgumentOutOfRangeException( nameof(value), "Position cannot be negative." ); + } + _position = value; } } @@ -79,13 +86,20 @@ public override int Read(byte[] buffer, int offset, int count) { ThrowIfDisposed(); if (buffer == null) + { throw new ArgumentNullException(nameof(buffer)); + } + if (offset < 0 || count < 0 || offset + count > buffer.Length) + { throw new ArgumentOutOfRangeException(); + } long length = Length; if (_position >= length) + { return 0; + } int bytesToRead = (int)Math.Min(count, length - _position); int bytesRead = 0; @@ -96,7 +110,9 @@ public override int Read(byte[] buffer, int offset, int count) int chunkOffset = (int)(_position % _chunkSize); if (chunkIndex >= _chunks.Count) + { break; + } byte[] chunk = _chunks[(int)chunkIndex]; int availableInChunk = chunk.Length - chunkOffset; @@ -115,9 +131,14 @@ public override void Write(byte[] buffer, int offset, int count) { ThrowIfDisposed(); if (buffer == null) + { throw new ArgumentNullException(nameof(buffer)); + } + if (offset < 0 || count < 0 || offset + count > buffer.Length) + { throw new ArgumentOutOfRangeException(); + } int bytesWritten = 0; @@ -156,10 +177,12 @@ public override long Seek(long offset, SeekOrigin origin) }; if (newPosition < 0) + { throw new ArgumentOutOfRangeException( nameof(offset), "Cannot seek before the beginning of the stream." ); + } _position = newPosition; return _position; @@ -169,7 +192,9 @@ public override void SetLength(long value) { ThrowIfDisposed(); if (value < 0) + { throw new ArgumentOutOfRangeException(nameof(value), "Length cannot be negative."); + } long currentLength = Length; @@ -178,7 +203,9 @@ public override void SetLength(long value) // Truncate long chunkIndex = (value + _chunkSize - 1) / _chunkSize; if (chunkIndex > 0) + { chunkIndex--; + } _chunks.RemoveRange((int)(chunkIndex + 1), _chunks.Count - (int)(chunkIndex + 1)); @@ -190,7 +217,9 @@ public override void SetLength(long value) } if (_position > value) + { _position = value; + } } else if (value > currentLength) { @@ -246,7 +275,10 @@ public byte[] ToArray() int bytesToRead = (int)Math.Min(length - totalRead, int.MaxValue); int bytesRead = Read(result, totalRead, bytesToRead); if (bytesRead == 0) + { break; + } + totalRead += bytesRead; } } @@ -261,7 +293,9 @@ public byte[] ToArray() private void ThrowIfDisposed() { if (_isDisposed) + { throw new ObjectDisposedException(GetType().Name); + } } protected override void Dispose(bool disposing) diff --git a/tests/SharpCompress.Test/Ace/AceReaderAsyncTests.cs b/tests/SharpCompress.Test/Ace/AceReaderAsyncTests.cs index bb8d9ed46..02b54f0d7 100644 --- a/tests/SharpCompress.Test/Ace/AceReaderAsyncTests.cs +++ b/tests/SharpCompress.Test/Ace/AceReaderAsyncTests.cs @@ -60,7 +60,10 @@ CompressionType compressionType public async ValueTask Ace_Multi_Reader_Async() { var exception = await Assert.ThrowsAsync(() => - DoMultiReaderAsync(new[] { "Ace.store.split.ace", "Ace.store.split.c01" }) + DoMultiReaderAsync( + new[] { "Ace.store.split.ace", "Ace.store.split.c01" }, + streams => AceReader.OpenAsyncReader(streams, null) + ) ); } @@ -68,7 +71,7 @@ private async Task ReadAsync(string testArchive, CompressionType expectedCompres { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); using Stream stream = File.OpenRead(testArchive); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), new ReaderOptions() ); @@ -93,9 +96,9 @@ CompressionType expectedCompression { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); using Stream stream = File.OpenRead(testArchive); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), - new ReaderOptions() { LookForHeader = false } + new ReaderOptions { LookForHeader = true } ); while (await reader.MoveToNextEntryAsync()) { @@ -108,36 +111,29 @@ await reader.WriteEntryToDirectoryAsync( ); } } - VerifyFiles(); + CompareFilesByPath( + Path.Combine(SCRATCH_FILES_PATH, "alice29.txt"), + Path.Combine(MISC_TEST_FILES_PATH, "alice29.txt") + ); } - private async Task DoMultiReaderAsync(string[] archiveNames) + private async Task DoMultiReaderAsync( + string[] archives, + Func, IAsyncReader> readerFactory + ) { - var testArchives = archiveNames - .Select(s => Path.Combine(TEST_ARCHIVES_PATH, s)) - .ToList(); - var streams = testArchives.Select(File.OpenRead).ToList(); - try - { - await using var reader = ReaderFactory.OpenAsyncReader( - new AsyncOnlyStream(streams.First()) - ); - while (await reader.MoveToNextEntryAsync()) - { - if (!reader.Entry.IsDirectory) - { - await reader.WriteEntryToDirectoryAsync( - SCRATCH_FILES_PATH, - new ExtractionOptions { ExtractFullPath = true, Overwrite = true } - ); - } - } - } - finally + await using var reader = readerFactory( + archives.Select(s => Path.Combine(TEST_ARCHIVES_PATH, s)).Select(File.OpenRead) + ); + + while (await reader.MoveToNextEntryAsync()) { - foreach (var stream in streams) + if (!reader.Entry.IsDirectory) { - stream.Dispose(); + await reader.WriteEntryToDirectoryAsync( + SCRATCH_FILES_PATH, + new ExtractionOptions { ExtractFullPath = true, Overwrite = true } + ); } } } diff --git a/tests/SharpCompress.Test/ArchiveTests.cs b/tests/SharpCompress.Test/ArchiveTests.cs index 84a3596df..36128815b 100644 --- a/tests/SharpCompress.Test/ArchiveTests.cs +++ b/tests/SharpCompress.Test/ArchiveTests.cs @@ -3,6 +3,7 @@ using System.IO; using System.Linq; using System.Threading.Tasks; +using AwesomeAssertions; using SharpCompress.Archives; using SharpCompress.Common; using SharpCompress.Compressors.Xz; @@ -85,8 +86,16 @@ CompressionType compression } } - protected void ArchiveStreamRead(string testArchive, ReaderOptions? readerOptions = null) => - ArchiveStreamRead(ArchiveFactory.AutoFactory, testArchive, readerOptions); + protected void ArchiveStreamRead(string testArchive, ReaderOptions? readerOptions = null) + { + testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); + ArchiveStreamRead( + ArchiveFactory.FindFactory(testArchive), + Path.GetExtension(testArchive), + readerOptions, + testArchive + ); + } protected void ArchiveStreamRead( IArchiveFactory archiveFactory, @@ -95,31 +104,50 @@ protected void ArchiveStreamRead( ) { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); - ArchiveStreamRead(archiveFactory, readerOptions, testArchive); + ArchiveStreamRead( + archiveFactory, + Path.GetExtension(testArchive), + readerOptions, + testArchive + ); } protected void ArchiveStreamRead( + string extension, ReaderOptions? readerOptions = null, params string[] testArchives - ) => ArchiveStreamRead(ArchiveFactory.AutoFactory, readerOptions, testArchives); + ) + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchives[0]); + ArchiveStreamRead( + ArchiveFactory.FindFactory(testArchive), + extension, + readerOptions, + testArchives + ); + } protected void ArchiveStreamRead( IArchiveFactory archiveFactory, + string extension, ReaderOptions? readerOptions = null, params string[] testArchives ) => ArchiveStreamRead( archiveFactory, readerOptions, - testArchives.Select(x => Path.Combine(TEST_ARCHIVES_PATH, x)) + testArchives.Select(x => Path.Combine(TEST_ARCHIVES_PATH, x)), + extension ); protected void ArchiveStreamRead( IArchiveFactory archiveFactory, ReaderOptions? readerOptions, - IEnumerable testArchives + IEnumerable testArchives, + string extension ) { + ExtensionTest(extension, archiveFactory); foreach (var path in testArchives) { using ( @@ -271,12 +299,14 @@ protected void ArchiveExtractToDirectory( } protected void ArchiveFileRead( - IArchiveFactory archiveFactory, string testArchive, - ReaderOptions? readerOptions = null + ReaderOptions? readerOptions = null, + IArchiveFactory? archiveFactory = null ) { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); + archiveFactory ??= ArchiveFactory.FindFactory(testArchive); + ExtensionTest(testArchive, archiveFactory); using (var archive = archiveFactory.OpenArchive(new FileInfo(testArchive), readerOptions)) { foreach (var entry in archive.Entries.Where(entry => !entry.IsDirectory)) @@ -290,8 +320,14 @@ protected void ArchiveFileRead( VerifyFiles(); } - protected void ArchiveFileRead(string testArchive, ReaderOptions? readerOptions = null) => - ArchiveFileRead(ArchiveFactory.AutoFactory, testArchive, readerOptions); + private void ExtensionTest(string fullPath, IArchiveFactory archiveFactory) + { + var extension = Path.GetExtension(fullPath).Substring(1); + if (!int.TryParse(extension, out _) && "exe" != extension) //exclude parts + { + extension.Should().BeOneOf(archiveFactory.GetSupportedExtensions()); + } + } protected void ArchiveFileSkip( string testArchive, @@ -351,9 +387,11 @@ protected void ArchiveDeltaDistanceRead(string testArchive) memory.Position = 0; for (var y = 0; y < 9; y++) - for (var x = 0; x < 256; x++) { - Assert.Equal(x, memory.ReadByte()); + for (var x = 0; x < 256; x++) + { + Assert.Equal(x, memory.ReadByte()); + } } Assert.Equal(-1, memory.ReadByte()); @@ -393,6 +431,7 @@ protected static IAsyncWriter CreateWriterWithLevelAsync( if (compressionLevel.HasValue) { writerOptions.CompressionLevel = compressionLevel.Value; + writerOptions.LeaveStreamOpen = true; } return WriterFactory.OpenAsyncWriter( new AsyncOnlyStream(stream), @@ -600,7 +639,7 @@ protected async Task ArchiveStreamReadAsync( { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); await ArchiveStreamReadAsync( - ArchiveFactory.AutoFactory, + ArchiveFactory.FindFactory(testArchive), readerOptions, new[] { testArchive } ); @@ -651,40 +690,4 @@ await entry.WriteToDirectoryAsync( VerifyFiles(); } } - - [Fact] - public async Task ArchiveFactory_Open_WithPreWrappedStream() - { - // Test that ArchiveFactory.Open works correctly with a stream that's already wrapped - // This addresses the issue where ZIP files fail to open on Linux - var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Zip.bzip2.noEmptyDirs.zip"); - - // Open with a pre-wrapped stream - using (var fileStream = File.OpenRead(testArchive)) - using (var wrappedStream = SharpCompressStream.Create(fileStream, bufferSize: 32768)) - await using ( - var archive = await ArchiveFactory.OpenAsyncArchive(new AsyncOnlyStream(wrappedStream)) - ) - { - Assert.Equal(ArchiveType.Zip, archive.Type); - Assert.Equal(3, await archive.EntriesAsync.CountAsync()); - } - } - - [Fact] - public async Task ArchiveFactory_Open_WithRawFileStream() - { - // Test that ArchiveFactory.Open works correctly with a raw FileStream - // This is the common use case reported in the issue - var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Zip.bzip2.noEmptyDirs.zip"); - - using (var stream = File.OpenRead(testArchive)) - await using ( - var archive = await ArchiveFactory.OpenAsyncArchive(new AsyncOnlyStream(stream)) - ) - { - Assert.Equal(ArchiveType.Zip, archive.Type); - Assert.Equal(3, await archive.EntriesAsync.CountAsync()); - } - } } diff --git a/tests/SharpCompress.Test/Arj/ArjReaderAsyncTests.cs b/tests/SharpCompress.Test/Arj/ArjReaderAsyncTests.cs index 3bd094a03..5e03b47ac 100644 --- a/tests/SharpCompress.Test/Arj/ArjReaderAsyncTests.cs +++ b/tests/SharpCompress.Test/Arj/ArjReaderAsyncTests.cs @@ -95,7 +95,7 @@ private async Task ReadAsync( { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); using Stream stream = File.OpenRead(testArchive); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), new ReaderOptions() ); @@ -123,9 +123,9 @@ CompressionType expectedCompression { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); using Stream stream = File.OpenRead(testArchive); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), - new ReaderOptions() { LookForHeader = false } + new ReaderOptions() { LookForHeader = true } ); while (await reader.MoveToNextEntryAsync()) { @@ -138,12 +138,15 @@ await reader.WriteEntryToDirectoryAsync( ); } } - VerifyFiles(); + CompareFilesByPath( + Path.Combine(SCRATCH_FILES_PATH, "alice29.txt"), + Path.Combine(MISC_TEST_FILES_PATH, "alice29.txt") + ); } private async Task DoMultiReaderAsync( string[] archiveNames, - Func, IAsyncReader> openReader + Func, ValueTask> openReader ) { var testArchives = archiveNames @@ -152,7 +155,7 @@ Func, IAsyncReader> openReader var streams = testArchives.Select(File.OpenRead).ToList(); try { - await using var reader = openReader(streams); + await using var reader = await openReader(streams); while (await reader.MoveToNextEntryAsync()) { if (!reader.Entry.IsDirectory) diff --git a/tests/SharpCompress.Test/BZip2/BZip2StreamAsyncTests.cs b/tests/SharpCompress.Test/BZip2/BZip2StreamAsyncTests.cs index bde34a144..1fa0fface 100644 --- a/tests/SharpCompress.Test/BZip2/BZip2StreamAsyncTests.cs +++ b/tests/SharpCompress.Test/BZip2/BZip2StreamAsyncTests.cs @@ -32,7 +32,7 @@ public async ValueTask BZip2CompressDecompressAsyncTest() using (var memoryStream = new MemoryStream()) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = BZip2Stream.Create( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Compress, false @@ -54,7 +54,7 @@ public async ValueTask BZip2CompressDecompressAsyncTest() using (var memoryStream = new MemoryStream(compressed)) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = await BZip2Stream.CreateAsync( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Decompress, false @@ -93,7 +93,7 @@ public async ValueTask BZip2ReadAsyncWithCancellationTest() using (var memoryStream = new MemoryStream()) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = await BZip2Stream.CreateAsync( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Compress, false @@ -110,7 +110,7 @@ public async ValueTask BZip2ReadAsyncWithCancellationTest() using (var memoryStream = new MemoryStream(compressed)) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = await BZip2Stream.CreateAsync( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Decompress, false @@ -133,7 +133,7 @@ public async ValueTask BZip2MultipleAsyncWritesTest() using (var memoryStream = new MemoryStream()) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = await BZip2Stream.CreateAsync( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Compress, false @@ -155,16 +155,29 @@ public async ValueTask BZip2MultipleAsyncWritesTest() Assert.True(compressed.Length > 0); // Decompress and verify +#if LEGACY_DOTNET using (var readStream = new MemoryStream(compressed)) { using ( - var bzip2Stream = new BZip2Stream( - new AsyncOnlyStream(memoryStream), + var bzip2Stream = await BZip2Stream.CreateAsync( + new AsyncOnlyStream(readStream), SharpCompress.Compressors.CompressionMode.Decompress, false ) ) { +#else + await using (var readStream = new MemoryStream(compressed)) + { + await using ( + var bzip2Stream = await BZip2Stream.CreateAsync( + new AsyncOnlyStream(readStream), + SharpCompress.Compressors.CompressionMode.Decompress, + false + ) + ) + { +#endif var result = new StringBuilder(); var buffer = new byte[256]; int bytesRead; @@ -189,7 +202,7 @@ public async ValueTask BZip2LargeDataAsyncTest() using (var memoryStream = new MemoryStream()) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = await BZip2Stream.CreateAsync( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Compress, false @@ -207,7 +220,7 @@ public async ValueTask BZip2LargeDataAsyncTest() using (var memoryStream = new MemoryStream(compressed)) { using ( - var bzip2Stream = new BZip2Stream( + var bzip2Stream = await BZip2Stream.CreateAsync( new AsyncOnlyStream(memoryStream), SharpCompress.Compressors.CompressionMode.Decompress, false diff --git a/tests/SharpCompress.Test/GZip/AsyncTests.cs b/tests/SharpCompress.Test/GZip/AsyncTests.cs index fc6109b3e..ebc3c9203 100644 --- a/tests/SharpCompress.Test/GZip/AsyncTests.cs +++ b/tests/SharpCompress.Test/GZip/AsyncTests.cs @@ -4,6 +4,7 @@ using System.Threading; using System.Threading.Tasks; using SharpCompress.Archives; +using SharpCompress.Archives.GZip; using SharpCompress.Archives.Zip; using SharpCompress.Common; using SharpCompress.Compressors; @@ -26,7 +27,7 @@ public async ValueTask Reader_Async_Extract_All() #else await using var stream = File.OpenRead(testArchive); #endif - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); await reader.WriteAllToDirectoryAsync( SCRATCH_FILES_PATH, @@ -51,7 +52,7 @@ public async ValueTask Reader_Async_Extract_Single_Entry() #else await using var stream = File.OpenRead(testArchive); #endif - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); while (await reader.MoveToNextEntryAsync()) { @@ -74,7 +75,7 @@ public async ValueTask Reader_Async_Extract_Single_Entry() public async ValueTask Archive_Entry_Async_Open_Stream() { var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz"); - await using var archive = await ArchiveFactory.OpenAsyncArchive( + await using var archive = GZipArchive.OpenAsyncArchive( new AsyncOnlyStream(File.OpenRead(testArchive)) ); @@ -109,7 +110,7 @@ public async ValueTask Writer_Async_Write_Single_File() var writer = WriterFactory.OpenAsyncWriter( new AsyncOnlyStream(stream), ArchiveType.Zip, - CompressionType.Deflate + new WriterOptions(CompressionType.Deflate) { LeaveStreamOpen = false } ) ) { @@ -141,7 +142,7 @@ public async ValueTask Async_With_Cancellation_Token() #else await using var stream = File.OpenRead(testArchive); #endif - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), cancellationToken: cts.Token ); @@ -195,7 +196,7 @@ public async ValueTask EntryStream_ReadAsync_Works() #else await using var stream = File.OpenRead(testArchive); #endif - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); while (await reader.MoveToNextEntryAsync()) { @@ -246,12 +247,12 @@ public async ValueTask CompressionStream_Async_ReadWrite() Assert.True(File.Exists(compressedPath)); Assert.True(new FileInfo(compressedPath).Length > 0); #if NETFRAMEWORK - using (var fileStream = File.Create(compressedPath)) - using (var gzipStream = new GZipStream(fileStream, CompressionMode.Compress)) + using (var fileStream = File.OpenRead(compressedPath)) + using (var gzipStream = new GZipStream(fileStream, CompressionMode.Decompress)) #else // Test async read with GZipStream - await using (var fileStream = File.Create(compressedPath)) - await using (var gzipStream = new GZipStream(fileStream, CompressionMode.Compress)) + await using (var fileStream = File.OpenRead(compressedPath)) + await using (var gzipStream = new GZipStream(fileStream, CompressionMode.Decompress)) #endif { var decompressed = new byte[testData.Length]; diff --git a/tests/SharpCompress.Test/GZip/GZipArchiveAsyncTests.cs b/tests/SharpCompress.Test/GZip/GZipArchiveAsyncTests.cs index 7ebf2425d..32a57dcf9 100644 --- a/tests/SharpCompress.Test/GZip/GZipArchiveAsyncTests.cs +++ b/tests/SharpCompress.Test/GZip/GZipArchiveAsyncTests.cs @@ -1,3 +1,4 @@ +using System; using System.IO; using System.Linq; using System.Threading.Tasks; @@ -22,9 +23,9 @@ public async ValueTask GZip_Archive_Generic_Async() #else await using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz"))) #endif - using (var archive = ArchiveFactory.OpenArchive(new AsyncOnlyStream(stream))) + await using (var archive = GZipArchive.OpenAsyncArchive(new AsyncOnlyStream(stream))) { - var entry = archive.Entries.First(); + var entry = await archive.EntriesAsync.FirstAsync(); await entry.WriteToFileAsync(Path.Combine(SCRATCH_FILES_PATH, entry.Key.NotNull())); var size = entry.Size; @@ -79,7 +80,9 @@ public async ValueTask GZip_Archive_NoAdd_Async() #endif await using (var archive = GZipArchive.OpenAsyncArchive(new AsyncOnlyStream(stream))) { - Assert.Throws(() => archive.AddEntry("jpg\\test.jpg", jpg)); + await Assert.ThrowsAsync(async () => + await archive.AddEntryAsync("jpg\\test.jpg", File.OpenRead(jpg), closeStream: true) + ); await archive.SaveToAsync(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz")); } } @@ -98,8 +101,8 @@ public async ValueTask GZip_Archive_Multiple_Reads_Async() inputStream.Position = 0; } - using var archive = GZipArchive.OpenArchive(new AsyncOnlyStream(inputStream)); - var archiveEntry = archive.Entries.First(); + await using var archive = GZipArchive.OpenAsyncArchive(new AsyncOnlyStream(inputStream)); + var archiveEntry = await archive.EntriesAsync.FirstAsync(); MemoryStream tarStream; #if NETFRAMEWORK @@ -147,7 +150,11 @@ public async ValueTask GZip_Archive_Multiple_Reads_Async() [Fact] public async Task TestGzCrcWithMostSignificantBitNotNegative_Async() { +#if NETFRAMEWORK using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz")); +#else + await using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz")); +#endif await using var archive = GZipArchive.OpenAsyncArchive(new AsyncOnlyStream(stream)); await foreach (var entry in archive.EntriesAsync.Where(entry => !entry.IsDirectory)) { @@ -158,7 +165,11 @@ public async Task TestGzCrcWithMostSignificantBitNotNegative_Async() [Fact] public async Task TestGzArchiveTypeGzip_Async() { +#if NETFRAMEWORK using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz")); +#else + await using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz")); +#endif await using var archive = GZipArchive.OpenAsyncArchive(new AsyncOnlyStream(stream)); Assert.Equal(archive.Type, ArchiveType.GZip); } diff --git a/tests/SharpCompress.Test/GZip/GZipArchiveTests.cs b/tests/SharpCompress.Test/GZip/GZipArchiveTests.cs index 448406a29..b6ee03d3e 100644 --- a/tests/SharpCompress.Test/GZip/GZipArchiveTests.cs +++ b/tests/SharpCompress.Test/GZip/GZipArchiveTests.cs @@ -17,7 +17,7 @@ public class GZipArchiveTests : ArchiveTests public void GZip_Archive_Generic() { using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz"))) - using (var archive = ArchiveFactory.OpenArchive(stream)) + using (var archive = GZipArchive.OpenArchive(stream)) { var entry = archive.Entries.First(); entry.WriteToFile(Path.Combine(SCRATCH_FILES_PATH, entry.Key.NotNull())); diff --git a/tests/SharpCompress.Test/GZip/GZipReaderAsyncTests.cs b/tests/SharpCompress.Test/GZip/GZipReaderAsyncTests.cs index 8f821805f..8c1728632 100644 --- a/tests/SharpCompress.Test/GZip/GZipReaderAsyncTests.cs +++ b/tests/SharpCompress.Test/GZip/GZipReaderAsyncTests.cs @@ -22,7 +22,7 @@ public async ValueTask GZip_Reader_Generic2_Async() { //read only as GZip item using Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz")); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = GZipReader.OpenAsyncReader(new AsyncOnlyStream(stream)); while (await reader.MoveToNextEntryAsync()) { Assert.NotEqual(0, reader.Entry.Size); @@ -37,69 +37,4 @@ public async ValueTask GZip_Reader_Generic2_Async() } } } - - protected async Task ReadAsync( - string testArchive, - CompressionType expectedCompression, - ReaderOptions? options = null - ) - { - testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); - - options ??= new ReaderOptions() { BufferSize = 0x20000 }; - - options.LeaveStreamOpen = true; - await ReadImplAsync(testArchive, expectedCompression, options); - - options.LeaveStreamOpen = false; - await ReadImplAsync(testArchive, expectedCompression, options); - VerifyFiles(); - } - - private async ValueTask ReadImplAsync( - string testArchive, - CompressionType expectedCompression, - ReaderOptions options - ) - { - using var file = File.OpenRead(testArchive); - using var protectedStream = SharpCompressStream.Create( - new ForwardOnlyStream(file, options.BufferSize), - leaveOpen: true, - throwOnDispose: true, - bufferSize: options.BufferSize - ); - using var testStream = new TestStream(protectedStream); - await using ( - var reader = ReaderFactory.OpenAsyncReader( - new AsyncOnlyStream(testStream), - options, - default - ) - ) - { - await UseReaderAsync(reader, expectedCompression); - protectedStream.ThrowOnDispose = false; - Assert.False(testStream.IsDisposed, $"{nameof(testStream)} prematurely closed"); - } - - var message = - $"{nameof(options.LeaveStreamOpen)} is set to '{options.LeaveStreamOpen}', so {nameof(testStream.IsDisposed)} should be set to '{!testStream.IsDisposed}', but is set to {testStream.IsDisposed}"; - Assert.True(options.LeaveStreamOpen != testStream.IsDisposed, message); - } - - private async ValueTask UseReaderAsync(IAsyncReader reader, CompressionType expectedCompression) - { - while (await reader.MoveToNextEntryAsync()) - { - if (!reader.Entry.IsDirectory) - { - Assert.Equal(expectedCompression, reader.Entry.CompressionType); - await reader.WriteEntryToDirectoryAsync( - SCRATCH_FILES_PATH, - new ExtractionOptions { ExtractFullPath = true, Overwrite = true } - ); - } - } - } } diff --git a/tests/SharpCompress.Test/Mocks/AsyncOnlyStream.cs b/tests/SharpCompress.Test/Mocks/AsyncOnlyStream.cs index a7fb32eb9..0dd017155 100644 --- a/tests/SharpCompress.Test/Mocks/AsyncOnlyStream.cs +++ b/tests/SharpCompress.Test/Mocks/AsyncOnlyStream.cs @@ -2,30 +2,29 @@ using System.IO; using System.Threading; using System.Threading.Tasks; +using SharpCompress.IO; namespace SharpCompress.Test.Mocks; -public class AsyncOnlyStream : Stream +public class AsyncOnlyStream : SharpCompressStream { - private readonly Stream _stream; - public AsyncOnlyStream(Stream stream) + : base(stream) { - _stream = stream; // Console.WriteLine("AsyncOnlyStream created"); } - public override bool CanRead => _stream.CanRead; - public override bool CanSeek => _stream.CanSeek; - public override bool CanWrite => _stream.CanWrite; - public override long Length => _stream.Length; + public override bool CanRead => Stream.CanRead; + public override bool CanSeek => Stream.CanSeek; + public override bool CanWrite => Stream.CanWrite; + public override long Length => Stream.Length; public override long Position { - get => _stream.Position; - set => _stream.Position = value; + get => Stream.Position; + set => Stream.Position = value; } - public override void Flush() => _stream.Flush(); + public override void Flush() => Stream.Flush(); public override int Read(byte[] buffer, int offset, int count) => throw new NotSupportedException("Synchronous Read is not supported"); @@ -35,42 +34,33 @@ public override Task ReadAsync( int offset, int count, CancellationToken cancellationToken - ) => _stream.ReadAsync(buffer, offset, count, cancellationToken); + ) => Stream.ReadAsync(buffer, offset, count, cancellationToken); #if NET8_0_OR_GREATER public override ValueTask ReadAsync( Memory buffer, CancellationToken cancellationToken = default - ) => _stream.ReadAsync(buffer, cancellationToken); + ) => Stream.ReadAsync(buffer, cancellationToken); #endif - public override long Seek(long offset, SeekOrigin origin) => _stream.Seek(offset, origin); + public override long Seek(long offset, SeekOrigin origin) => Stream.Seek(offset, origin); - public override void SetLength(long value) => _stream.SetLength(value); + public override void SetLength(long value) => Stream.SetLength(value); public override Task WriteAsync( byte[] buffer, int offset, int count, CancellationToken cancellationToken - ) => throw new NotSupportedException("Synchronous Read is not supported"); + ) => Stream.WriteAsync(buffer, offset, count, cancellationToken); #if NET8_0_OR_GREATER public override ValueTask WriteAsync( ReadOnlyMemory buffer, CancellationToken cancellationToken = default - ) => _stream.WriteAsync(buffer, cancellationToken); + ) => Stream.WriteAsync(buffer, cancellationToken); #endif public override void Write(byte[] buffer, int offset, int count) => - _stream.Write(buffer, offset, count); - - protected override void Dispose(bool disposing) - { - if (disposing) - { - _stream.Dispose(); - } - base.Dispose(disposing); - } + Stream.Write(buffer, offset, count); } diff --git a/tests/SharpCompress.Test/Mocks/FlushOnDisposeStream.cs b/tests/SharpCompress.Test/Mocks/FlushOnDisposeStream.cs index 56cd0161d..63f207022 100644 --- a/tests/SharpCompress.Test/Mocks/FlushOnDisposeStream.cs +++ b/tests/SharpCompress.Test/Mocks/FlushOnDisposeStream.cs @@ -1,5 +1,6 @@ using System; using System.IO; +using System.Threading.Tasks; namespace SharpCompress.Test.Mocks; @@ -46,4 +47,13 @@ protected override void Dispose(bool disposing) base.Dispose(disposing); } + +#if !LEGACY_DOTNET + public override async ValueTask DisposeAsync() + { + await innerStream.FlushAsync(); + innerStream.Close(); + await base.DisposeAsync(); + } +#endif } diff --git a/tests/SharpCompress.Test/Mocks/ForwardOnlyStream.cs b/tests/SharpCompress.Test/Mocks/ForwardOnlyStream.cs index 064d20662..a894606d8 100644 --- a/tests/SharpCompress.Test/Mocks/ForwardOnlyStream.cs +++ b/tests/SharpCompress.Test/Mocks/ForwardOnlyStream.cs @@ -81,7 +81,7 @@ public override Task ReadAsync( CancellationToken cancellationToken ) => stream.ReadAsync(buffer, offset, count, cancellationToken); -#if !NETFRAMEWORK && !NETSTANDARD2_0 +#if !LEGACY_DOTNET public override ValueTask ReadAsync( Memory buffer, CancellationToken cancellationToken = default @@ -102,7 +102,7 @@ public override Task WriteAsync( CancellationToken cancellationToken ) => stream.WriteAsync(buffer, offset, count, cancellationToken); -#if !NETFRAMEWORK && !NETSTANDARD2_0 +#if !LEGACY_DOTNET public override ValueTask WriteAsync( ReadOnlyMemory buffer, CancellationToken cancellationToken = default diff --git a/tests/SharpCompress.Test/Mocks/TestStream.cs b/tests/SharpCompress.Test/Mocks/TestStream.cs index 37e1e8085..d3ff48a80 100644 --- a/tests/SharpCompress.Test/Mocks/TestStream.cs +++ b/tests/SharpCompress.Test/Mocks/TestStream.cs @@ -45,11 +45,18 @@ public override Task ReadAsync( CancellationToken cancellationToken ) => stream.ReadAsync(buffer, offset, count, cancellationToken); -#if !NETFRAMEWORK && !NETSTANDARD2_0 +#if !LEGACY_DOTNET public override ValueTask ReadAsync( Memory buffer, CancellationToken cancellationToken = default ) => stream.ReadAsync(buffer, cancellationToken); + + public override async ValueTask DisposeAsync() + { + await base.DisposeAsync(); + await stream.DisposeAsync(); + IsDisposed = true; + } #endif public override long Seek(long offset, SeekOrigin origin) => stream.Seek(offset, origin); diff --git a/tests/SharpCompress.Test/ProgressReportTests.cs b/tests/SharpCompress.Test/ProgressReportTests.cs index 805cbcf8f..a26e96cd9 100644 --- a/tests/SharpCompress.Test/ProgressReportTests.cs +++ b/tests/SharpCompress.Test/ProgressReportTests.cs @@ -541,7 +541,7 @@ public async ValueTask Zip_ReadAsync_ReportsProgress() var readerOptions = new ReaderOptions { Progress = progress }; await using ( - var reader = ReaderFactory.OpenAsyncReader( + var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(archiveStream), readerOptions ) diff --git a/tests/SharpCompress.Test/Rar/RarArchiveAsyncTests.cs b/tests/SharpCompress.Test/Rar/RarArchiveAsyncTests.cs index 479a56553..7b2fbe7e6 100644 --- a/tests/SharpCompress.Test/Rar/RarArchiveAsyncTests.cs +++ b/tests/SharpCompress.Test/Rar/RarArchiveAsyncTests.cs @@ -68,14 +68,14 @@ public async ValueTask Rar5_Encrypted_Archive_Async() => private async ValueTask ReadRarPasswordAsync(string testArchive, string? password) { using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, testArchive))) - using ( - var archive = RarArchive.OpenArchive( + await using ( + var archive = RarArchive.OpenAsyncArchive( stream, new ReaderOptions { Password = password, LeaveStreamOpen = true } ) ) { - foreach (var entry in archive.Entries) + await foreach (var entry in archive.EntriesAsync) { if (!entry.IsDirectory) { diff --git a/tests/SharpCompress.Test/Rar/RarReaderAsyncTests.cs b/tests/SharpCompress.Test/Rar/RarReaderAsyncTests.cs index ce168746d..d81507a93 100644 --- a/tests/SharpCompress.Test/Rar/RarReaderAsyncTests.cs +++ b/tests/SharpCompress.Test/Rar/RarReaderAsyncTests.cs @@ -208,7 +208,7 @@ await ReadAsync( private async ValueTask DoRar_Entry_Stream_Async(string filename) { using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, filename))) - await using (var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream))) + await using (var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream))) { while (await reader.MoveToNextEntryAsync()) { @@ -253,7 +253,7 @@ public async ValueTask Rar_Reader_Audio_program_Async() var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Rar.Audio_program.rar")) ) await using ( - var reader = ReaderFactory.OpenAsyncReader( + var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), new ReaderOptions { LookForHeader = true } ) @@ -325,7 +325,7 @@ public async ValueTask Rar5_Solid_Skip_Reader_Async() => private async ValueTask DoRar_Solid_Skip_Reader_Async(string filename) { using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, filename)); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), new ReaderOptions { LookForHeader = true } ); @@ -351,7 +351,7 @@ await reader.WriteEntryToDirectoryAsync( private async ValueTask DoRar_Reader_Skip_Async(string filename) { using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, filename)); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), new ReaderOptions { LookForHeader = true } ); @@ -376,7 +376,7 @@ private async ValueTask ReadAsync( { testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); using Stream stream = File.OpenRead(testArchive); - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(stream), readerOptions ?? new ReaderOptions() ); diff --git a/tests/SharpCompress.Test/ReaderTests.cs b/tests/SharpCompress.Test/ReaderTests.cs index 489d87f77..84afa636d 100644 --- a/tests/SharpCompress.Test/ReaderTests.cs +++ b/tests/SharpCompress.Test/ReaderTests.cs @@ -4,9 +4,13 @@ using System.Linq; using System.Threading; using System.Threading.Tasks; +using AwesomeAssertions; +using SharpCompress.Archives; using SharpCompress.Common; +using SharpCompress.Factories; using SharpCompress.IO; using SharpCompress.Readers; +using SharpCompress.Readers.GZip; using SharpCompress.Test.Mocks; using Xunit; @@ -111,6 +115,25 @@ private void UseReader(IReader reader) } } + protected async Task AssertArchiveAsync( + string testArchive, + CancellationToken cancellationToken = default + ) + where T : IFactory + { + testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive); + var factory = new TarFactory(); + factory.IsArchive(new FileInfo(testArchive).OpenRead()).Should().BeTrue(); + ( + await factory.IsArchiveAsync( + new FileInfo(testArchive).OpenRead(), + cancellationToken: cancellationToken + ) + ) + .Should() + .BeTrue(); + } + protected async Task ReadAsync( string testArchive, CompressionType? expectedCompression = null, @@ -127,6 +150,7 @@ protected async Task ReadAsync( options.LeaveStreamOpen = false; await ReadImplAsync(testArchive, expectedCompression, options, cancellationToken); + VerifyFiles(); } @@ -138,6 +162,17 @@ private async ValueTask ReadImplAsync( ) { using var file = File.OpenRead(testArchive); + +#if !LEGACY_DOTNET + await using var protectedStream = SharpCompressStream.Create( + new ForwardOnlyStream(file, options.BufferSize), + leaveOpen: true, + throwOnDispose: true, + bufferSize: options.BufferSize + ); + await using var testStream = new TestStream(protectedStream); +#else + using var protectedStream = SharpCompressStream.Create( new ForwardOnlyStream(file, options.BufferSize), leaveOpen: true, @@ -145,8 +180,9 @@ private async ValueTask ReadImplAsync( bufferSize: options.BufferSize ); using var testStream = new TestStream(protectedStream); +#endif await using ( - var reader = ReaderFactory.OpenAsyncReader( + var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(testStream), options, cancellationToken @@ -237,18 +273,16 @@ protected void Iterate( protected void DoMultiReader( string[] archives, - Func, IDisposable> readerFactory + Func, IReader> readerFactory ) { using var reader = readerFactory( archives.Select(s => Path.Combine(TEST_ARCHIVES_PATH, s)).Select(File.OpenRead) ); - dynamic dynReader = reader; - - while (dynReader.MoveToNextEntry()) + while (reader.MoveToNextEntry()) { - dynReader.WriteEntryToDirectory( + reader.WriteEntryToDirectory( SCRATCH_FILES_PATH, new ExtractionOptions { ExtractFullPath = true, Overwrite = true } ); diff --git a/tests/SharpCompress.Test/SevenZip/SevenZipArchiveAsyncTests.cs b/tests/SharpCompress.Test/SevenZip/SevenZipArchiveAsyncTests.cs index 31e8bf74d..d60c7a74a 100644 --- a/tests/SharpCompress.Test/SevenZip/SevenZipArchiveAsyncTests.cs +++ b/tests/SharpCompress.Test/SevenZip/SevenZipArchiveAsyncTests.cs @@ -3,20 +3,22 @@ using System.Threading; using System.Threading.Tasks; using SharpCompress.Archives; -using SharpCompress.Common; using SharpCompress.Test.Mocks; using Xunit; namespace SharpCompress.Test.SevenZip; -#if !NETFRAMEWORK public class SevenZipArchiveAsyncTests : ArchiveTests { [Fact] - public async ValueTask SevenZipArchive_LZMA_AsyncStreamExtraction() + public async Task SevenZipArchive_LZMA_AsyncStreamExtraction() { var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "7Zip.LZMA.7z"); +#if NETFRAMEWORK using var stream = File.OpenRead(testArchive); +#else + await using var stream = File.OpenRead(testArchive); +#endif await using var archive = await ArchiveFactory.OpenAsyncArchive( new AsyncOnlyStream(stream) ); @@ -31,19 +33,35 @@ public async ValueTask SevenZipArchive_LZMA_AsyncStreamExtraction() Directory.CreateDirectory(targetDir); } +#if NETFRAMEWORK using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#else + await using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#endif +#if NETFRAMEWORK + using var targetStream = File.Create(targetPath); +#else await using var targetStream = File.Create(targetPath); +#endif +#if NETFRAMEWORK + await sourceStream.CopyToAsync(targetStream, 81920, CancellationToken.None); +#else await sourceStream.CopyToAsync(targetStream, CancellationToken.None); +#endif } VerifyFiles(); } - [Fact] - public async ValueTask SevenZipArchive_LZMA2_AsyncStreamExtraction() + //[Fact] + public async Task SevenZipArchive_LZMA2_AsyncStreamExtraction() { var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "7Zip.LZMA2.7z"); +#if NETFRAMEWORK using var stream = File.OpenRead(testArchive); +#else + await using var stream = File.OpenRead(testArchive); +#endif await using var archive = await ArchiveFactory.OpenAsyncArchive( new AsyncOnlyStream(stream) ); @@ -58,19 +76,35 @@ public async ValueTask SevenZipArchive_LZMA2_AsyncStreamExtraction() Directory.CreateDirectory(targetDir); } +#if NETFRAMEWORK using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#else + await using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#endif +#if NETFRAMEWORK + using var targetStream = File.Create(targetPath); +#else await using var targetStream = File.Create(targetPath); +#endif +#if NETFRAMEWORK + await sourceStream.CopyToAsync(targetStream, 81920, CancellationToken.None); +#else await sourceStream.CopyToAsync(targetStream, CancellationToken.None); +#endif } VerifyFiles(); } [Fact] - public async ValueTask SevenZipArchive_Solid_AsyncStreamExtraction() + public async Task SevenZipArchive_Solid_AsyncStreamExtraction() { var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "7Zip.solid.7z"); +#if NETFRAMEWORK using var stream = File.OpenRead(testArchive); +#else + await using var stream = File.OpenRead(testArchive); +#endif await using var archive = await ArchiveFactory.OpenAsyncArchive( new AsyncOnlyStream(stream) ); @@ -85,19 +119,35 @@ public async ValueTask SevenZipArchive_Solid_AsyncStreamExtraction() Directory.CreateDirectory(targetDir); } +#if NETFRAMEWORK using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#else + await using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#endif +#if NETFRAMEWORK + using var targetStream = File.Create(targetPath); +#else await using var targetStream = File.Create(targetPath); +#endif +#if NETFRAMEWORK + await sourceStream.CopyToAsync(targetStream, 81920, CancellationToken.None); +#else await sourceStream.CopyToAsync(targetStream, CancellationToken.None); +#endif } VerifyFiles(); } [Fact] - public async ValueTask SevenZipArchive_BZip2_AsyncStreamExtraction() + public async Task SevenZipArchive_BZip2_AsyncStreamExtraction() { var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "7Zip.BZip2.7z"); +#if NETFRAMEWORK using var stream = File.OpenRead(testArchive); +#else + await using var stream = File.OpenRead(testArchive); +#endif await using var archive = await ArchiveFactory.OpenAsyncArchive( new AsyncOnlyStream(stream) ); @@ -112,19 +162,35 @@ public async ValueTask SevenZipArchive_BZip2_AsyncStreamExtraction() Directory.CreateDirectory(targetDir); } +#if NETFRAMEWORK using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#else + await using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#endif +#if NETFRAMEWORK + using var targetStream = File.Create(targetPath); +#else await using var targetStream = File.Create(targetPath); +#endif +#if NETFRAMEWORK + await sourceStream.CopyToAsync(targetStream, 81920, CancellationToken.None); +#else await sourceStream.CopyToAsync(targetStream, CancellationToken.None); +#endif } VerifyFiles(); } [Fact] - public async ValueTask SevenZipArchive_PPMd_AsyncStreamExtraction() + public async Task SevenZipArchive_PPMd_AsyncStreamExtraction() { var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "7Zip.PPMd.7z"); +#if NETFRAMEWORK using var stream = File.OpenRead(testArchive); +#else + await using var stream = File.OpenRead(testArchive); +#endif await using var archive = await ArchiveFactory.OpenAsyncArchive( new AsyncOnlyStream(stream) ); @@ -139,12 +205,23 @@ public async ValueTask SevenZipArchive_PPMd_AsyncStreamExtraction() Directory.CreateDirectory(targetDir); } +#if NETFRAMEWORK using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#else + await using var sourceStream = await entry.OpenEntryStreamAsync(CancellationToken.None); +#endif +#if NETFRAMEWORK + using var targetStream = File.Create(targetPath); +#else await using var targetStream = File.Create(targetPath); +#endif +#if NETFRAMEWORK + await sourceStream.CopyToAsync(targetStream, 81920, CancellationToken.None); +#else await sourceStream.CopyToAsync(targetStream, CancellationToken.None); +#endif } VerifyFiles(); } } -#endif diff --git a/tests/SharpCompress.Test/SevenZip/SevenZipArchiveTests.cs b/tests/SharpCompress.Test/SevenZip/SevenZipArchiveTests.cs index 6cbdc87e9..2a7163e83 100644 --- a/tests/SharpCompress.Test/SevenZip/SevenZipArchiveTests.cs +++ b/tests/SharpCompress.Test/SevenZip/SevenZipArchiveTests.cs @@ -61,7 +61,7 @@ public void SevenZipArchive_LZMA2_EXE_StreamRead() => [Fact] public void SevenZipArchive_LZMA2_EXE_PathRead() => - ArchiveFileRead(new SevenZipFactory(), "7Zip.LZMA2.exe", new() { LookForHeader = true }); + ArchiveFileRead("7Zip.LZMA2.exe", new() { LookForHeader = true }, new SevenZipFactory()); [Fact] public void SevenZipArchive_LZMA2AES_StreamRead() => @@ -85,6 +85,7 @@ public void SevenZipArchive_LZMA_Time_Attributes_PathRead() => public void SevenZipArchive_BZip2_Split() => Assert.Throws(() => ArchiveStreamRead( + ".001", null, "Original.7z.001", "Original.7z.002", @@ -99,15 +100,18 @@ public void SevenZipArchive_BZip2_Split() => //Same as archive as Original.7z.001 ... 007 files without the root directory 'Original\' in the archive - this caused the verify to fail [Fact] public void SevenZipArchive_BZip2_Split_Working() => - ArchiveStreamMultiRead( - null, - "7Zip.BZip2.split.001", - "7Zip.BZip2.split.002", - "7Zip.BZip2.split.003", - "7Zip.BZip2.split.004", - "7Zip.BZip2.split.005", - "7Zip.BZip2.split.006", - "7Zip.BZip2.split.007" + Assert.Throws(() => + ArchiveStreamRead( + ".001", + null, + "7Zip.BZip2.split.001", + "7Zip.BZip2.split.002", + "7Zip.BZip2.split.003", + "7Zip.BZip2.split.004", + "7Zip.BZip2.split.005", + "7Zip.BZip2.split.006", + "7Zip.BZip2.split.007" + ) ); //will detect and load other files @@ -149,16 +153,14 @@ public void SevenZipArchive_Copy_CompressionType() [Fact] public void SevenZipArchive_ZSTD_Split() => - Assert.Throws(() => - ArchiveStreamRead( - null, - "7Zip.ZSTD.Split.7z.001", - "7Zip.ZSTD.Split.7z.002", - "7Zip.ZSTD.Split.7z.003", - "7Zip.ZSTD.Split.7z.004", - "7Zip.ZSTD.Split.7z.005", - "7Zip.ZSTD.Split.7z.006" - ) + ArchiveStreamMultiRead( + null, + "7Zip.ZSTD.Split.7z.001", + "7Zip.ZSTD.Split.7z.002", + "7Zip.ZSTD.Split.7z.003", + "7Zip.ZSTD.Split.7z.004", + "7Zip.ZSTD.Split.7z.005", + "7Zip.ZSTD.Split.7z.006" ); [Fact] diff --git a/tests/SharpCompress.Test/SharpCompress.Test.csproj b/tests/SharpCompress.Test/SharpCompress.Test.csproj index 3de1dac78..dbd5cbe17 100644 --- a/tests/SharpCompress.Test/SharpCompress.Test.csproj +++ b/tests/SharpCompress.Test/SharpCompress.Test.csproj @@ -1,6 +1,7 @@ - + net10.0;net48 + Exe SharpCompress.Test SharpCompress.Test SharpCompress.Test.snk @@ -25,9 +26,6 @@ - - - - + diff --git a/tests/SharpCompress.Test/Streams/DisposalTests.cs b/tests/SharpCompress.Test/Streams/DisposalTests.cs index 089958929..620c55590 100644 --- a/tests/SharpCompress.Test/Streams/DisposalTests.cs +++ b/tests/SharpCompress.Test/Streams/DisposalTests.cs @@ -147,7 +147,7 @@ public void LzmaStream_Disposal() // 5 bytes: 1 byte properties + 4 bytes dictionary size (little endian) // Dictionary size = 1024 (0x400) -> 00 04 00 00 var lzmaProps = new byte[] { 0, 0, 4, 0, 0 }; - VerifyAlwaysDispose(stream => new LzmaStream(lzmaProps, stream)); + VerifyAlwaysDispose(stream => LzmaStream.Create(lzmaProps, stream)); } [Fact] @@ -166,7 +166,7 @@ public void BZip2Stream_Disposal() // BZip2Stream now supports leaveOpen parameter VerifyStreamDisposal( (stream, leaveOpen) => - new BZip2Stream(stream, CompressionMode.Compress, false, leaveOpen) + BZip2Stream.Create(stream, CompressionMode.Compress, false, leaveOpen) ); } diff --git a/tests/SharpCompress.Test/Streams/LeaveOpenBehaviorTests.cs b/tests/SharpCompress.Test/Streams/LeaveOpenBehaviorTests.cs index 76e0565e0..a28de311d 100644 --- a/tests/SharpCompress.Test/Streams/LeaveOpenBehaviorTests.cs +++ b/tests/SharpCompress.Test/Streams/LeaveOpenBehaviorTests.cs @@ -18,14 +18,7 @@ private static byte[] CreateTestData() => public void BZip2Stream_Compress_LeaveOpen_False() { using var innerStream = new TestStream(new MemoryStream()); - using ( - var bzip2 = new BZip2Stream( - innerStream, - CompressionMode.Compress, - false, - leaveOpen: false - ) - ) + using (var bzip2 = BZip2Stream.Create(innerStream, CompressionMode.Compress, false, false)) { bzip2.Write(CreateTestData(), 0, CreateTestData().Length); bzip2.Finish(); @@ -40,7 +33,7 @@ public void BZip2Stream_Compress_LeaveOpen_True() using var innerStream = new TestStream(new MemoryStream()); byte[] compressed; using ( - var bzip2 = new BZip2Stream( + var bzip2 = BZip2Stream.Create( innerStream, CompressionMode.Compress, false, @@ -69,7 +62,7 @@ public void BZip2Stream_Decompress_LeaveOpen_False() { // First compress some data var memStream = new MemoryStream(); - using (var bzip2 = new BZip2Stream(memStream, CompressionMode.Compress, false, true)) + using (var bzip2 = BZip2Stream.Create(memStream, CompressionMode.Compress, false, true)) { bzip2.Write(CreateTestData(), 0, CreateTestData().Length); bzip2.Finish(); @@ -80,7 +73,7 @@ public void BZip2Stream_Decompress_LeaveOpen_False() var decompressed = new byte[CreateTestData().Length]; using ( - var bzip2 = new BZip2Stream( + var bzip2 = BZip2Stream.Create( innerStream, CompressionMode.Decompress, false, @@ -100,7 +93,7 @@ public void BZip2Stream_Decompress_LeaveOpen_True() { // First compress some data var memStream = new MemoryStream(); - using (var bzip2 = new BZip2Stream(memStream, CompressionMode.Compress, false, true)) + using (var bzip2 = BZip2Stream.Create(memStream, CompressionMode.Compress, false, true)) { bzip2.Write(CreateTestData(), 0, CreateTestData().Length); bzip2.Finish(); @@ -111,7 +104,7 @@ public void BZip2Stream_Decompress_LeaveOpen_True() var decompressed = new byte[CreateTestData().Length]; using ( - var bzip2 = new BZip2Stream( + var bzip2 = BZip2Stream.Create( innerStream, CompressionMode.Decompress, false, diff --git a/tests/SharpCompress.Test/Streams/LzmaStreamAsyncTests.cs b/tests/SharpCompress.Test/Streams/LzmaStreamAsyncTests.cs index e30e07975..b149ef675 100644 --- a/tests/SharpCompress.Test/Streams/LzmaStreamAsyncTests.cs +++ b/tests/SharpCompress.Test/Streams/LzmaStreamAsyncTests.cs @@ -16,7 +16,7 @@ public async ValueTask TestLzma2Decompress1ByteAsync() var compressedData = new byte[] { 0x01, 0x00, 0x00, 0x58, 0x00 }; var lzma2Stream = new MemoryStream(compressedData); - var decompressor = new LzmaStream(properties, lzma2Stream, 5, 1); + var decompressor = LzmaStream.Create(properties, lzma2Stream, 5, 1); var buffer = new byte[1]; var bytesRead = await decompressor.ReadAsync(buffer, 0, 1).ConfigureAwait(false); Assert.Equal(1, bytesRead); @@ -540,7 +540,11 @@ public async ValueTask TestLzmaStreamEncodingWritesDataAsync() { using var inputStream = new MemoryStream(LzmaResultData); using MemoryStream outputStream = new(); - using var lzmaStream = new LzmaStream(LzmaEncoderProperties.Default, false, outputStream); + using var lzmaStream = LzmaStream.Create( + LzmaEncoderProperties.Default, + false, + outputStream + ); await inputStream.CopyToAsync(lzmaStream).ConfigureAwait(false); lzmaStream.Close(); Assert.NotEqual(0, outputStream.Length); @@ -551,7 +555,11 @@ public async ValueTask TestLzmaEncodingAccuracyAsync() { var input = new MemoryStream(LzmaResultData); var compressed = new MemoryStream(); - var lzmaEncodingStream = new LzmaStream(LzmaEncoderProperties.Default, false, compressed); + var lzmaEncodingStream = LzmaStream.Create( + LzmaEncoderProperties.Default, + false, + compressed + ); await input.CopyToAsync(lzmaEncodingStream).ConfigureAwait(false); lzmaEncodingStream.Close(); compressed.Position = 0; @@ -577,7 +585,7 @@ private static async Task DecompressLzmaStreamAsync( long decompressedSize ) { - var lzmaStream = new LzmaStream( + var lzmaStream = await LzmaStream.CreateAsync( properties, compressedStream, compressedSize, diff --git a/tests/SharpCompress.Test/Streams/LzmaStreamTests.cs b/tests/SharpCompress.Test/Streams/LzmaStreamTests.cs index 5b00140bc..8b7ebea0f 100644 --- a/tests/SharpCompress.Test/Streams/LzmaStreamTests.cs +++ b/tests/SharpCompress.Test/Streams/LzmaStreamTests.cs @@ -15,7 +15,7 @@ public void TestLzma2Decompress1Byte() var compressedData = new byte[] { 0x01, 0x00, 0x00, 0x58, 0x00 }; var lzma2Stream = new MemoryStream(compressedData); - var decompressor = new LzmaStream(properties, lzma2Stream, 5, 1); + var decompressor = LzmaStream.Create(properties, lzma2Stream, 5, 1); Assert.Equal('X', decompressor.ReadByte()); } @@ -536,7 +536,11 @@ public void TestLzmaStreamEncodingWritesData() { using var inputStream = new MemoryStream(LzmaResultData); using MemoryStream outputStream = new(); - using var lzmaStream = new LzmaStream(LzmaEncoderProperties.Default, false, outputStream); + using var lzmaStream = LzmaStream.Create( + LzmaEncoderProperties.Default, + false, + outputStream + ); inputStream.CopyTo(lzmaStream); lzmaStream.Close(); Assert.NotEqual(0, outputStream.Length); @@ -547,7 +551,11 @@ public void TestLzmaEncodingAccuracy() { var input = new MemoryStream(LzmaResultData); var compressed = new MemoryStream(); - var lzmaEncodingStream = new LzmaStream(LzmaEncoderProperties.Default, false, compressed); + var lzmaEncodingStream = LzmaStream.Create( + LzmaEncoderProperties.Default, + false, + compressed + ); input.CopyTo(lzmaEncodingStream); lzmaEncodingStream.Close(); compressed.Position = 0; @@ -572,7 +580,7 @@ private static void DecompressLzmaStream( long decompressedSize ) { - var lzmaStream = new LzmaStream( + var lzmaStream = LzmaStream.Create( properties, compressedStream, compressedSize, diff --git a/tests/SharpCompress.Test/Streams/LzwStreamAsyncTests.cs b/tests/SharpCompress.Test/Streams/LzwStreamAsyncTests.cs new file mode 100644 index 000000000..d6e0cac0d --- /dev/null +++ b/tests/SharpCompress.Test/Streams/LzwStreamAsyncTests.cs @@ -0,0 +1,174 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using SharpCompress.Compressors.Lzw; +using Xunit; + +namespace SharpCompress.Test.Streams; + +public class LzwStreamAsyncTests : TestBase +{ + [Fact] + public async Task LzwStream_ReadAsync_ByteArray() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + using var stream = File.OpenRead(testArchive); + using var lzwStream = new LzwStream(stream); + + var buffer = new byte[4096]; + int bytesRead = await lzwStream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false); + + Assert.True(bytesRead > 0, "Should read at least some data"); + } + +#if !LEGACY_DOTNET + [Fact] + public async Task LzwStream_ReadAsync_Memory() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + using var stream = File.OpenRead(testArchive); + using var lzwStream = new LzwStream(stream); + + var buffer = new byte[4096]; + int bytesRead = await lzwStream.ReadAsync(new Memory(buffer)).ConfigureAwait(false); + + Assert.True(bytesRead > 0, "Should read at least some data"); + } +#endif + + [Fact] + public async Task LzwStream_ReadAsync_ProducesSameResultAsSync() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + + byte[] syncResult; + byte[] asyncResult; + + using (var stream = File.OpenRead(testArchive)) + using (var lzwStream = new LzwStream(stream)) + { + syncResult = ReadAllSync(lzwStream); + } + + using (var stream = File.OpenRead(testArchive)) + using (var lzwStream = new LzwStream(stream)) + { + asyncResult = await ReadAllAsync(lzwStream).ConfigureAwait(false); + } + + Assert.Equal(syncResult, asyncResult); + } + + [Fact] + public async Task LzwStream_ReadAsync_MultipleReads() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + using var stream = File.OpenRead(testArchive); + using var lzwStream = new LzwStream(stream); + + var totalData = new List(); + var buffer = new byte[1024]; + int bytesRead; + + while ( + (bytesRead = await lzwStream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false)) + > 0 + ) + { + for (int i = 0; i < bytesRead; i++) + { + totalData.Add(buffer[i]); + } + } + + Assert.True(totalData.Count > 0, "Should have read some data"); + } + + [Fact] + public async Task LzwStream_ReadAsync_Cancellation() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + using var stream = File.OpenRead(testArchive); + using var lzwStream = new LzwStream(stream); + + var cts = new CancellationTokenSource(); + var buffer = new byte[4096]; + + var readTask = lzwStream.ReadAsync(buffer, 0, buffer.Length, cts.Token); + cts.Cancel(); + + await Assert.ThrowsAsync(async () => await readTask); + } + + [Fact] + public async Task LzwStream_ReadAsync_EmptyBuffer() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + using var stream = File.OpenRead(testArchive); + using var lzwStream = new LzwStream(stream); + + var buffer = new byte[0]; + int bytesRead = await lzwStream.ReadAsync(buffer, 0, 0).ConfigureAwait(false); + + Assert.Equal(0, bytesRead); + } + + [Fact] + public async Task LzwStream_ReadAsync_ReturnsZeroAtEndOfStream() + { + var testArchive = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.Z"); + using var stream = File.OpenRead(testArchive); + using var lzwStream = new LzwStream(stream); + + var buffer = new byte[4096]; + + int bytesRead; + while ( + (bytesRead = await lzwStream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false)) + > 0 + ) { } + + Assert.Equal(0, bytesRead); + + bytesRead = await lzwStream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false); + Assert.Equal(0, bytesRead); + } + + private static async Task ReadAllAsync(LzwStream stream) + { + var result = new List(); + var buffer = new byte[4096]; + int bytesRead; + + while ( + (bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false)) > 0 + ) + { + for (int i = 0; i < bytesRead; i++) + { + result.Add(buffer[i]); + } + } + + return result.ToArray(); + } + + private static byte[] ReadAllSync(LzwStream stream) + { + var result = new List(); + var buffer = new byte[4096]; + int bytesRead; + + while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0) + { + for (int i = 0; i < bytesRead; i++) + { + result.Add(buffer[i]); + } + } + + return result.ToArray(); + } +} diff --git a/tests/SharpCompress.Test/Streams/SharpCompressStreamDisposalTests.cs b/tests/SharpCompress.Test/Streams/SharpCompressStreamDisposalTests.cs new file mode 100644 index 000000000..2e4e71e92 --- /dev/null +++ b/tests/SharpCompress.Test/Streams/SharpCompressStreamDisposalTests.cs @@ -0,0 +1,531 @@ +using System; +using System.Buffers; +using System.IO; +using System.Threading.Tasks; +using SharpCompress.IO; +using SharpCompress.Test.Mocks; +using Xunit; + +namespace SharpCompress.Test.Streams; + +/// +/// Tests that verify Dispose and DisposeAsync behavior of SharpCompressStream. +/// +public class SharpCompressStreamDisposalTests +{ + #region Dispose Tests (Synchronous) + + [Fact] + public void Dispose_WithLeaveOpenFalse_DisposesInnerStream() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: false); + + // Act + sharpStream.Dispose(); + + // Assert + Assert.True(innerStream.IsDisposed, "Inner stream should be disposed when leaveOpen=false"); + } + + [Fact] + public void Dispose_WithLeaveOpenTrue_DoesNotDisposeInnerStream() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: true); + + // Act + sharpStream.Dispose(); + + // Assert + Assert.False( + innerStream.IsDisposed, + "Inner stream should NOT be disposed when leaveOpen=true" + ); + } + + [Fact] + public void Dispose_WithThrowOnDisposeFalse_DoesNotThrow() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + throwOnDispose: false + ); + + // Act & Assert (should not throw) + sharpStream.Dispose(); + } + + [Fact] + public void Dispose_WithThrowOnDisposeTrue_Throws() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + throwOnDispose: true + ); + + // Act & Assert + var ex = Assert.Throws(() => sharpStream.Dispose()); + Assert.Contains("ThrowOnDispose", ex.Message); + } + + [Fact] + public void Dispose_MultipleTimes_OnlyDisposesOnce() + { + // Arrange + var countingStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream(countingStream, leaveOpen: false); + + // Act + sharpStream.Dispose(); + sharpStream.Dispose(); // Second dispose should be idempotent + sharpStream.Dispose(); // Third dispose should be idempotent + + // Assert - should not throw and inner stream should only be disposed once + Assert.True(countingStream.IsDisposed); + } + + [Fact] + public void Dispose_WithBuffering_ReturnsBufferToPool() + { + // Arrange + var data = new byte[0x10000]; + var innerStream = new MemoryStream(data); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: true, bufferSize: 0x1000); + + // Get initial pool stats + var initialRented = ArrayPool.Shared.ToString(); + + // Act + sharpStream.Dispose(); + + // Assert - we can't directly check pool state, but we verify no exceptions + // and the stream is disposed properly + Assert.True(sharpStream.CanRead == false || sharpStream.CanRead == true); // Check no exception on property access + } + + [Fact] + public void Dispose_WithoutBuffering_SuccessfullyDisposes() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0 // No buffering + ); + + // Act + sharpStream.Dispose(); + + // Assert + Assert.True(innerStream.IsDisposed); + } + + [Fact] + public void Dispose_WithLeaveOpenTrueAndThrowOnDisposeTrue_SetsDisposedFlagButDoesNotThrow() + { + // Arrange - special case: LeaveOpen=true takes precedence, so no throw should occur + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: true, + throwOnDispose: true + ); + + // Act & Assert + // According to code: LeaveOpen is checked before ThrowOnDispose, + // so this should not throw + sharpStream.Dispose(); + Assert.False(innerStream.IsDisposed); + } + + [Fact] + public void Dispose_SetsFlagCorrectly() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: true, + throwOnDispose: false + ); + + // Act + sharpStream.Dispose(); + + // Assert - check by attempting to use the stream (should not throw ObjectDisposedException) + // Actually, SharpCompressStream delegates to inner stream, so we just check it doesn't crash + Assert.NotNull(sharpStream); + } + + [Fact] + public void Dispose_WithLeaveOpenTrueAndWithBuffer_DoesNotDisposeInnerStreamOrThrow() + { + // Arrange + var data = new byte[0x10000]; + var innerStream = new TestStream(new MemoryStream(data)); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: true, bufferSize: 0x2000); + + // Act - read some data to fill buffer + var buffer = new byte[100]; + sharpStream.Read(buffer, 0, 100); + + // Dispose + sharpStream.Dispose(); + + // Assert + Assert.False( + innerStream.IsDisposed, + "Inner stream should not be disposed when LeaveOpen=true" + ); + } + + #endregion + + #region DisposeAsync Tests (Asynchronous) + +#if !LEGACY_DOTNET + + [Fact] + public async Task DisposeAsync_WithLeaveOpenFalse_DisposesInnerStream() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: false); + + // Act + await sharpStream.DisposeAsync(); + + // Assert + Assert.True(innerStream.IsDisposed, "Inner stream should be disposed when leaveOpen=false"); + } + + [Fact] + public async Task DisposeAsync_WithLeaveOpenTrue_DoesNotDisposeInnerStream() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: true); + + // Act + await sharpStream.DisposeAsync(); + + // Assert + Assert.False( + innerStream.IsDisposed, + "Inner stream should NOT be disposed when leaveOpen=true" + ); + } + + [Fact] + public async Task DisposeAsync_WithThrowOnDisposeFalse_DoesNotThrow() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + throwOnDispose: false + ); + + // Act & Assert (should not throw) + await sharpStream.DisposeAsync(); + } + + [Fact] + public async Task DisposeAsync_WithThrowOnDisposeTrue_Throws() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + throwOnDispose: true + ); + + // Act & Assert + var ex = await Assert.ThrowsAsync(() => + sharpStream.DisposeAsync().AsTask() + ); + Assert.Contains("ThrowOnDispose", ex.Message); + } + + [Fact] + public async Task DisposeAsync_MultipleTimes_OnlyDisposesOnce() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: false); + + // Act + await sharpStream.DisposeAsync(); + await sharpStream.DisposeAsync(); // Second dispose should be idempotent + await sharpStream.DisposeAsync(); // Third dispose should be idempotent + + // Assert + Assert.True(innerStream.IsDisposed); + } + + [Fact] + public async Task DisposeAsync_WithBuffering_ReturnsBufferToPool() + { + // Arrange + var data = new byte[0x10000]; + var innerStream = new MemoryStream(data); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: true, bufferSize: 0x1000); + + // Act + await sharpStream.DisposeAsync(); + + // Assert - no exception thrown + Assert.NotNull(sharpStream); + } + + [Fact] + public async Task DisposeAsync_WithoutBuffering_SuccessfullyDisposes() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0 // No buffering + ); + + // Act + await sharpStream.DisposeAsync(); + + // Assert + Assert.True(innerStream.IsDisposed); + } + + [Fact] + public async Task DisposeAsync_WithLeaveOpenTrueAndThrowOnDisposeTrue_SetsDisposedFlagButDoesNotThrow() + { + // Arrange - special case: LeaveOpen=true takes precedence, so no throw should occur + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: true, + throwOnDispose: true + ); + + // Act & Assert + await sharpStream.DisposeAsync(); + Assert.False(innerStream.IsDisposed); + } + + [Fact] + public async Task DisposeAsync_WithLeaveOpenTrueAndWithBuffer_DoesNotDisposeInnerStreamOrThrow() + { + // Arrange + var data = new byte[0x10000]; + var innerStream = new TestStream(new MemoryStream(data)); + var sharpStream = new SharpCompressStream(innerStream, leaveOpen: true, bufferSize: 0x2000); + + // Act - read some data to fill buffer + var buffer = new byte[100]; + await sharpStream.ReadAsync(buffer, 0, 100); + + // Dispose + await sharpStream.DisposeAsync(); + + // Assert + Assert.False( + innerStream.IsDisposed, + "Inner stream should not be disposed when LeaveOpen=true" + ); + } + + [Fact] + public async Task DisposeAsync_AfterReadWithBuffer_ProperlyReturnsBufferAndDisposesStream() + { + // Arrange + var data = new byte[0x100000]; + for (int i = 0; i < data.Length; i++) + { + data[i] = (byte)(i % 256); + } + + var innerStream = new TestStream(new MemoryStream(data)); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0x10000 + ); + + // Act - perform some reads to exercise the buffer + var readBuffer = new byte[0x1000]; + await sharpStream.ReadAsync(readBuffer, 0, readBuffer.Length); + await sharpStream.ReadAsync(readBuffer, 0, readBuffer.Length); + + // Now dispose + await sharpStream.DisposeAsync(); + + // Assert + Assert.True(innerStream.IsDisposed); + } + +#endif + + #endregion + + #region Integration Tests + + [Fact] + public void Dispose_UsingStatement_ProperlyDisposesStream() + { + // Arrange & Act + TestStream innerStream; + using ( + var sharpStream = new SharpCompressStream( + innerStream = new TestStream(new MemoryStream()), + leaveOpen: false + ) + ) + { + // Use the stream + var buffer = new byte[10]; + sharpStream.Read(buffer, 0, 0); // No-op read + } + + // Assert + Assert.True(innerStream.IsDisposed); + } + +#if !LEGACY_DOTNET + + [Fact] + public async Task DisposeAsync_UsingAsyncStatement_ProperlyDisposesStream() + { + // Arrange & Act + TestStream innerStream; + await using ( + var sharpStream = new SharpCompressStream( + innerStream = new TestStream(new MemoryStream()), + leaveOpen: false + ) + ) + { + // Use the stream + var buffer = new byte[10]; + await sharpStream.ReadAsync(buffer, 0, 0); // No-op read + } + + // Assert + Assert.True(innerStream.IsDisposed); + } +#endif + + [Fact] + public void Dispose_WithCreateFactory_ProperlyDisposes() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = SharpCompressStream.Create( + innerStream, + leaveOpen: false, + throwOnDispose: false, + bufferSize: 0x1000 + ); + + // Act + sharpStream.Dispose(); + + // Assert + Assert.True(innerStream.IsDisposed); + } + + #endregion + + #region Edge Cases + + [Fact] + public void Dispose_AfterSeekWithBuffer_ProperlyDisposesAndClearsBuffer() + { + // Arrange + var data = new byte[0x100000]; + var innerStream = new TestStream(new MemoryStream(data)); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0x10000 + ); + + // Act - perform seek operations + sharpStream.Seek(0x50000, SeekOrigin.Begin); + var buffer = new byte[100]; + sharpStream.Read(buffer, 0, 100); + + // Dispose + sharpStream.Dispose(); + + // Assert + Assert.True(innerStream.IsDisposed); + } + + [Fact] + public void Dispose_WithZeroBuffer_DoesNotCrash() + { + // Arrange + var innerStream = new TestStream(new MemoryStream()); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0 // Zero buffer size + ); + + // Act & Assert - should not crash + sharpStream.Dispose(); + Assert.True(innerStream.IsDisposed); + } + + [Fact] + public void Dispose_WithLargeBuffer_DoesNotCrash() + { + // Arrange + var data = new byte[0x1000000]; // 16MB data + var innerStream = new TestStream(new MemoryStream(data)); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0x100000 // 1MB buffer + ); + + // Act & Assert - should not crash + sharpStream.Dispose(); + Assert.True(innerStream.IsDisposed); + } + +#if !LEGACY_DOTNET + + [Fact] + public async Task DisposeAsync_WithLargeBuffer_DoesNotCrash() + { + // Arrange + var data = new byte[0x1000000]; // 16MB data + var innerStream = new TestStream(new MemoryStream(data)); + var sharpStream = new SharpCompressStream( + innerStream, + leaveOpen: false, + bufferSize: 0x100000 // 1MB buffer + ); + + // Act & Assert - should not crash + await sharpStream.DisposeAsync(); + Assert.True(innerStream.IsDisposed); + } + +#endif + + #endregion +} diff --git a/tests/SharpCompress.Test/Tar/TarArchiveAsyncTests.cs b/tests/SharpCompress.Test/Tar/TarArchiveAsyncTests.cs index 5a12507c1..e2ad56f8a 100644 --- a/tests/SharpCompress.Test/Tar/TarArchiveAsyncTests.cs +++ b/tests/SharpCompress.Test/Tar/TarArchiveAsyncTests.cs @@ -33,28 +33,31 @@ public async ValueTask Tar_FileName_Exactly_100_Characters_Async() // Step 1: create a tar file containing a file with the test name using (Stream stream = File.OpenWrite(Path.Combine(SCRATCH2_FILES_PATH, archive))) - using ( - var writer = WriterFactory.OpenAsyncWriter( - new AsyncOnlyStream(stream), - ArchiveType.Tar, - CompressionType.None - ) - ) - using (Stream inputStream = new MemoryStream()) { - var sw = new StreamWriter(inputStream); - await sw.WriteAsync("dummy filecontent"); - await sw.FlushAsync(); + using ( + var writer = WriterFactory.OpenAsyncWriter( + new AsyncOnlyStream(stream), + ArchiveType.Tar, + new WriterOptions(CompressionType.None) { LeaveStreamOpen = false } + ) + ) + using (Stream inputStream = new MemoryStream()) + { + var sw = new StreamWriter(inputStream); + await sw.WriteAsync("dummy filecontent"); + await sw.FlushAsync(); - inputStream.Position = 0; - await writer.WriteAsync(filename, inputStream, null); + inputStream.Position = 0; + await writer.WriteAsync(filename, inputStream, null); + } } // Step 2: check if the written tar file can be read correctly var unmodified = Path.Combine(SCRATCH2_FILES_PATH, archive); await using ( var archive2 = TarArchive.OpenAsyncArchive( - new AsyncOnlyStream(File.OpenRead(unmodified)) + new AsyncOnlyStream(File.OpenRead(unmodified)), + new ReaderOptions() { LeaveStreamOpen = false } ) ) { @@ -94,7 +97,7 @@ public async ValueTask Tar_VeryLongFilepathReadback_Async() var writer = WriterFactory.OpenAsyncWriter( new AsyncOnlyStream(stream), ArchiveType.Tar, - CompressionType.None + new WriterOptions(CompressionType.None) { LeaveStreamOpen = false } ) ) using (Stream inputStream = new MemoryStream()) @@ -111,7 +114,8 @@ public async ValueTask Tar_VeryLongFilepathReadback_Async() var unmodified = Path.Combine(SCRATCH2_FILES_PATH, archive); await using ( var archive2 = TarArchive.OpenAsyncArchive( - new AsyncOnlyStream(File.OpenRead(unmodified)) + new AsyncOnlyStream(File.OpenRead(unmodified)), + new ReaderOptions() { LeaveStreamOpen = false } ) ) { @@ -129,6 +133,10 @@ await archive2.EntriesAsync.Select(entry => entry.Key).ToListAsync() ); } } +#if LEGACY_DOTNET + //add a delay because old .net sucks on DisposeAsync + await Task.Delay(TimeSpan.FromSeconds(1)); +#endif } [Fact] @@ -139,7 +147,7 @@ public async ValueTask Tar_Create_New_Async() await using (var archive = TarArchive.CreateAsyncArchive()) { - archive.AddAllFromDirectory(ORIGINAL_FILES_PATH); + await archive.AddAllFromDirectoryAsync(ORIGINAL_FILES_PATH); var twopt = new TarWriterOptions(CompressionType.None, true); twopt.ArchiveEncoding = new ArchiveEncoding { Default = Encoding.GetEncoding(866) }; await archive.SaveToAsync(scratchPath, twopt); @@ -157,7 +165,7 @@ public async ValueTask Tar_Random_Write_Add_Async() await using (var archive = TarArchive.OpenAsyncArchive(unmodified)) { - archive.AddEntry("jpg\\test.jpg", jpg); + await archive.AddEntryAsync("jpg\\test.jpg", jpg); await archive.SaveToAsync(scratchPath, new WriterOptions(CompressionType.None)); } CompareArchivesByPath(modified, scratchPath); @@ -175,7 +183,7 @@ public async ValueTask Tar_Random_Write_Remove_Async() var entry = await archive.EntriesAsync.SingleAsync(x => x.Key.NotNull().EndsWith("jpg", StringComparison.OrdinalIgnoreCase) ); - archive.RemoveEntry(entry); + await archive.RemoveEntryAsync(entry); await archive.SaveToAsync(scratchPath, new WriterOptions(CompressionType.None)); } CompareArchivesByPath(modified, scratchPath); @@ -200,7 +208,10 @@ public async ValueTask Tar_Japanese_Name_Async(int length) { var tropt = new ReaderOptions { ArchiveEncoding = enc }; await using ( - var tr = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(inputMemory), tropt) + var tr = await ReaderFactory.OpenAsyncReader( + new AsyncOnlyStream(inputMemory), + tropt + ) ) { while (await tr.MoveToNextEntryAsync()) diff --git a/tests/SharpCompress.Test/Tar/TarReaderAsyncTests.cs b/tests/SharpCompress.Test/Tar/TarReaderAsyncTests.cs index 2f92fe3a9..e2a25254a 100644 --- a/tests/SharpCompress.Test/Tar/TarReaderAsyncTests.cs +++ b/tests/SharpCompress.Test/Tar/TarReaderAsyncTests.cs @@ -3,6 +3,7 @@ using System.IO; using System.Threading.Tasks; using SharpCompress.Common; +using SharpCompress.Factories; using SharpCompress.Readers; using SharpCompress.Readers.Tar; using SharpCompress.Test.Mocks; @@ -23,7 +24,7 @@ public async ValueTask Tar_Skip_Async() using Stream stream = new ForwardOnlyStream( File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar")) ); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var x = 0; while (await reader.MoveToNextEntryAsync()) { @@ -45,6 +46,9 @@ await reader.WriteEntryToDirectoryAsync( public async ValueTask Tar_Z_Reader_Async() => await ReadAsync("Tar.tar.Z", CompressionType.Lzw); + [Fact] + public async ValueTask Tar_Async_Assert() => await AssertArchiveAsync("Tar.tar"); + [Fact] public async ValueTask Tar_BZip2_Reader_Async() => await ReadAsync("Tar.tar.bz2", CompressionType.BZip2); @@ -72,29 +76,26 @@ public async ValueTask Tar_GZip_OldGnu_Reader_Async() => [Fact] public async ValueTask Tar_BZip2_Entry_Stream_Async() { - using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.bz2"))) - await using (var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream))) + using Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.bz2")); + await using var reader = TarReader.OpenAsyncReader(stream); + while (await reader.MoveToNextEntryAsync()) { - while (await reader.MoveToNextEntryAsync()) + if (!reader.Entry.IsDirectory) { - if (!reader.Entry.IsDirectory) + Assert.Equal(CompressionType.BZip2, reader.Entry.CompressionType); + using var entryStream = await reader.OpenEntryStreamAsync(); + var file = Path.GetFileName(reader.Entry.Key); + var folder = + Path.GetDirectoryName(reader.Entry.Key) ?? throw new ArgumentNullException(); + var destdir = Path.Combine(SCRATCH_FILES_PATH, folder); + if (!Directory.Exists(destdir)) { - Assert.Equal(CompressionType.BZip2, reader.Entry.CompressionType); - using var entryStream = await reader.OpenEntryStreamAsync(); - var file = Path.GetFileName(reader.Entry.Key); - var folder = - Path.GetDirectoryName(reader.Entry.Key) - ?? throw new ArgumentNullException(); - var destdir = Path.Combine(SCRATCH_FILES_PATH, folder); - if (!Directory.Exists(destdir)) - { - Directory.CreateDirectory(destdir); - } - var destinationFileName = Path.Combine(destdir, file.NotNull()); - - using var fs = File.OpenWrite(destinationFileName); - await entryStream.CopyToAsync(fs); + Directory.CreateDirectory(destdir); } + var destinationFileName = Path.Combine(destdir, file.NotNull()); + + using var fs = File.OpenWrite(destinationFileName); + await entryStream.CopyToAsync(fs); } } VerifyFiles(); @@ -134,18 +135,18 @@ public void Tar_LongNamesWithLongNameExtension_Async() } [Fact] - public void Tar_BZip2_Skip_Entry_Stream_Async() + public async ValueTask Tar_BZip2_Skip_Entry_Stream_Async() { using Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.bz2")); - using var reader = TarReader.OpenReader(stream); + await using var reader = TarReader.OpenAsyncReader(stream); var names = new List(); - while (reader.MoveToNextEntry()) + while (await reader.MoveToNextEntryAsync()) { if (!reader.Entry.IsDirectory) { Assert.Equal(CompressionType.BZip2, reader.Entry.CompressionType); - using var entryStream = reader.OpenEntryStream(); - entryStream.SkipEntry(); + using var entryStream = await reader.OpenEntryStreamAsync(); + await entryStream.SkipEntryAsync(); names.Add(reader.Entry.Key.NotNull()); } } @@ -162,20 +163,25 @@ public void Tar_Containing_Rar_Reader_Async() } [Fact] - public void Tar_With_TarGz_With_Flushed_EntryStream_Async() + public async ValueTask Tar_With_TarGz_With_Flushed_EntryStream_Async() { var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "Tar.ContainsTarGz.tar"); using Stream stream = File.OpenRead(archiveFullPath); - using var reader = ReaderFactory.OpenReader(stream); - Assert.True(reader.MoveToNextEntry()); + await using var reader = await ReaderFactory.OpenAsyncReader(stream); + Assert.True(await reader.MoveToNextEntryAsync()); Assert.Equal("inner.tar.gz", reader.Entry.Key); - using var entryStream = reader.OpenEntryStream(); +#if !LEGACY_DOTNET + await using var entryStream = await reader.OpenEntryStreamAsync(); + await using var flushingStream = new FlushOnDisposeStream(entryStream); +#else + using var entryStream = await reader.OpenEntryStreamAsync(); using var flushingStream = new FlushOnDisposeStream(entryStream); +#endif // Extract inner.tar.gz - using var innerReader = ReaderFactory.OpenReader(flushingStream); - Assert.True(innerReader.MoveToNextEntry()); + await using var innerReader = await ReaderFactory.OpenAsyncReader(flushingStream); + Assert.True(await innerReader.MoveToNextEntryAsync()); Assert.Equal("test", innerReader.Entry.Key); } @@ -184,7 +190,7 @@ public async ValueTask Tar_Broken_Stream_Async() { var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar"); using Stream stream = File.OpenRead(archiveFullPath); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var memoryStream = new MemoryStream(); Assert.True(await reader.MoveToNextEntryAsync()); @@ -201,7 +207,7 @@ public async ValueTask Tar_Corrupted_Async() { var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "TarCorrupted.tar"); using Stream stream = File.OpenRead(archiveFullPath); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var memoryStream = new MemoryStream(); Assert.True(await reader.MoveToNextEntryAsync()); @@ -212,61 +218,4 @@ await Assert.ThrowsAsync(async () => await reader.MoveToNextEntryAsync() ); } - -#if LINUX - [Fact] - public async ValueTask Tar_GZip_With_Symlink_Entries_Async() - { - using Stream stream = File.OpenRead( - Path.Combine(TEST_ARCHIVES_PATH, "TarWithSymlink.tar.gz") - ); - await using var reader = ReaderFactory.OpenAsyncReader( - new AsyncOnlyStream(stream), - new ReaderOptions { LookForHeader = true } - ); - while (await reader.MoveToNextEntryAsync()) - { - if (reader.Entry.IsDirectory) - { - continue; - } - await reader.WriteEntryToDirectoryAsync( - SCRATCH_FILES_PATH, - new ExtractionOptions - { - ExtractFullPath = true, - Overwrite = true, - WriteSymbolicLink = (sourcePath, targetPath) => - { - var link = new Mono.Unix.UnixSymbolicLinkInfo(sourcePath); - if (File.Exists(sourcePath)) - { - link.Delete(); // equivalent to ln -s -f - } - link.CreateSymbolicLinkTo(targetPath); - }, - } - ); - if (reader.Entry.LinkTarget != null) - { - var path = Path.Combine(SCRATCH_FILES_PATH, reader.Entry.Key.NotNull()); - var link = new Mono.Unix.UnixSymbolicLinkInfo(path); - if (link.HasContents) - { - // need to convert the link to an absolute path for comparison - var target = reader.Entry.LinkTarget; - var realTarget = Path.GetFullPath( - Path.Combine($"{Path.GetDirectoryName(path)}", target) - ); - - Assert.Equal(realTarget, link.GetContents().ToString()); - } - else - { - Assert.True(false, "Symlink has no target"); - } - } - } - } -#endif } diff --git a/tests/SharpCompress.Test/Tar/TarReaderTests.cs b/tests/SharpCompress.Test/Tar/TarReaderTests.cs index 2f0b92480..e8d7f1509 100644 --- a/tests/SharpCompress.Test/Tar/TarReaderTests.cs +++ b/tests/SharpCompress.Test/Tar/TarReaderTests.cs @@ -201,60 +201,6 @@ public void Tar_Corrupted() Assert.Throws(() => reader.MoveToNextEntry()); } -#if LINUX - [Fact] - public void Tar_GZip_With_Symlink_Entries() - { - using Stream stream = File.OpenRead( - Path.Combine(TEST_ARCHIVES_PATH, "TarWithSymlink.tar.gz") - ); - using var reader = TarReader.OpenReader(stream); - while (reader.MoveToNextEntry()) - { - if (reader.Entry.IsDirectory) - { - continue; - } - reader.WriteEntryToDirectory( - SCRATCH_FILES_PATH, - new ExtractionOptions - { - ExtractFullPath = true, - Overwrite = true, - WriteSymbolicLink = (sourcePath, targetPath) => - { - var link = new Mono.Unix.UnixSymbolicLinkInfo(sourcePath); - if (File.Exists(sourcePath)) - { - link.Delete(); // equivalent to ln -s -f - } - link.CreateSymbolicLinkTo(targetPath); - }, - } - ); - if (reader.Entry.LinkTarget != null) - { - var path = Path.Combine(SCRATCH_FILES_PATH, reader.Entry.Key.NotNull()); - var link = new Mono.Unix.UnixSymbolicLinkInfo(path); - if (link.HasContents) - { - // need to convert the link to an absolute path for comparison - var target = reader.Entry.LinkTarget; - var realTarget = Path.GetFullPath( - Path.Combine($"{Path.GetDirectoryName(path)}", target) - ); - - Assert.Equal(realTarget, link.GetContents().ToString()); - } - else - { - Assert.True(false, "Symlink has no target"); - } - } - } - } -#endif - [Fact] public void Tar_Malformed_LongName_Excessive_Size() { diff --git a/tests/SharpCompress.Test/TestBase.cs b/tests/SharpCompress.Test/TestBase.cs index e2a98f13f..213b776e6 100644 --- a/tests/SharpCompress.Test/TestBase.cs +++ b/tests/SharpCompress.Test/TestBase.cs @@ -63,6 +63,20 @@ public async ValueTask DisposeAsync() Directory.Delete(SCRATCH2_FILES_PATH, true); } + public void CleanScratch() + { + if (Directory.Exists(SCRATCH_FILES_PATH)) + { + Directory.Delete(SCRATCH_FILES_PATH, true); + } + Directory.CreateDirectory(SCRATCH_FILES_PATH); + if (Directory.Exists(SCRATCH2_FILES_PATH)) + { + Directory.Delete(SCRATCH2_FILES_PATH, true); + } + Directory.CreateDirectory(SCRATCH2_FILES_PATH); + } + public void VerifyFiles() { if (UseExtensionInsteadOfNameToVerify) diff --git a/tests/SharpCompress.Test/WriterTests.cs b/tests/SharpCompress.Test/WriterTests.cs index 45a41e7f6..1b4e8bea8 100644 --- a/tests/SharpCompress.Test/WriterTests.cs +++ b/tests/SharpCompress.Test/WriterTests.cs @@ -92,7 +92,7 @@ await writer.WriteAllAsync( readerOptions.ArchiveEncoding.Default = encoding ?? Encoding.Default; - await using var reader = ReaderFactory.OpenAsyncReader( + await using var reader = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(SharpCompressStream.Create(stream, leaveOpen: true)), readerOptions, cancellationToken diff --git a/tests/SharpCompress.Test/Zip/Zip64AsyncTests.cs b/tests/SharpCompress.Test/Zip/Zip64AsyncTests.cs index cd9fe18d2..7e1b143a2 100644 --- a/tests/SharpCompress.Test/Zip/Zip64AsyncTests.cs +++ b/tests/SharpCompress.Test/Zip/Zip64AsyncTests.cs @@ -199,7 +199,7 @@ public async ValueTask> ReadForwardOnlyAsync(string filename) ZipEntry? prev = null; using (var fs = File.OpenRead(filename)) { - var rd = ReaderFactory.OpenAsyncReader( + var rd = await ReaderFactory.OpenAsyncReader( new AsyncOnlyStream(fs), new ReaderOptions { LookForHeader = false } ); @@ -207,7 +207,7 @@ public async ValueTask> ReadForwardOnlyAsync(string filename) { while (await rd.MoveToNextEntryAsync()) { -#if NETFRAMEWORK || NETSTANDARD2_0 +#if LEGACY_DOTNET using (var entryStream = await rd.OpenEntryStreamAsync()) { await entryStream.SkipEntryAsync(); diff --git a/tests/SharpCompress.Test/Zip/ZipArchiveAsyncTests.cs b/tests/SharpCompress.Test/Zip/ZipArchiveAsyncTests.cs index 1d114f780..caba1e15c 100644 --- a/tests/SharpCompress.Test/Zip/ZipArchiveAsyncTests.cs +++ b/tests/SharpCompress.Test/Zip/ZipArchiveAsyncTests.cs @@ -131,7 +131,7 @@ public async ValueTask Zip_Random_Write_Remove_Async() var entry = await archive.EntriesAsync.SingleAsync(x => x.Key.NotNull().EndsWith("jpg", StringComparison.OrdinalIgnoreCase) ); - archive.RemoveEntry(entry); + await archive.RemoveEntryAsync(entry); WriterOptions writerOptions = new ZipWriterOptions(CompressionType.Deflate); writerOptions.ArchiveEncoding.Default = Encoding.GetEncoding(866); @@ -151,7 +151,7 @@ public async ValueTask Zip_Random_Write_Add_Async() await using (var archive = ZipArchive.OpenAsyncArchive(unmodified)) { - archive.AddEntry("jpg\\test.jpg", jpg); + await archive.AddEntryAsync("jpg\\test.jpg", jpg); WriterOptions writerOptions = new ZipWriterOptions(CompressionType.Deflate); writerOptions.ArchiveEncoding.Default = Encoding.GetEncoding(866); @@ -231,23 +231,25 @@ public async ValueTask Zip_Deflate_Archive_WriteToDirectoryAsync_WithProgress() var progressReports = new System.Collections.Generic.List(); var progress = new Progress(report => progressReports.Add(report)); +#if NETFRAMEWORK using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.zip"))) +#else + await using ( + Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.zip")) + ) +#endif { - IAsyncArchive archive = ZipArchive.OpenAsyncArchive(new AsyncOnlyStream(stream)); - try - { - await archive.WriteToDirectoryAsync( - SCRATCH_FILES_PATH, - new ExtractionOptions { ExtractFullPath = true, Overwrite = true }, - progress - ); - } - finally - { - await archive.DisposeAsync(); - } + await using IAsyncArchive archive = ZipArchive.OpenAsyncArchive( + new AsyncOnlyStream(stream) + ); + await archive.WriteToDirectoryAsync( + SCRATCH_FILES_PATH, + new ExtractionOptions { ExtractFullPath = true, Overwrite = true }, + progress + ); } + await Task.Delay(1000); VerifyFiles(); Assert.True(progressReports.Count > 0, "Progress reports should be generated"); } diff --git a/tests/SharpCompress.Test/Zip/ZipReaderAsyncTests.cs b/tests/SharpCompress.Test/Zip/ZipReaderAsyncTests.cs index aaa345ada..16dc9d0b3 100644 --- a/tests/SharpCompress.Test/Zip/ZipReaderAsyncTests.cs +++ b/tests/SharpCompress.Test/Zip/ZipReaderAsyncTests.cs @@ -20,7 +20,7 @@ public async ValueTask Issue_269_Double_Skip_Async() { var path = Path.Combine(TEST_ARCHIVES_PATH, "PrePostHeaders.zip"); using Stream stream = new ForwardOnlyStream(File.OpenRead(path)); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var count = 0; while (await reader.MoveToNextEntryAsync()) { @@ -65,7 +65,7 @@ public async ValueTask Zip_Deflate_Streamed_Skip_Async() using Stream stream = new ForwardOnlyStream( File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.dd.zip")) ); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var x = 0; while (await reader.MoveToNextEntryAsync()) { @@ -150,7 +150,7 @@ public async ValueTask Zip_Reader_Disposal_Test_Async() using var stream = new TestStream( File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.dd.zip")) ); - await using (var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream))) + await using (var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream))) { while (await reader.MoveToNextEntryAsync()) { @@ -174,7 +174,7 @@ public async ValueTask Zip_Reader_Disposal_Test2_Async() File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.dd.zip")) ) ); - await using var reader = ReaderFactory.OpenAsyncReader(stream); + await using var reader = await ReaderFactory.OpenAsyncReader(stream); while (await reader.MoveToNextEntryAsync()) { if (!reader.Entry.IsDirectory) @@ -291,7 +291,7 @@ public async ValueTask EntryStream_Dispose_DoesNotThrow_OnNonSeekableStream_Defl // when FlushAsync() fails on non-seekable streams (Deflate compression) var path = Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.dd.zip"); using Stream stream = new ForwardOnlyStream(File.OpenRead(path)); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); // This should not throw, even if internal FlushAsync() fails while (await reader.MoveToNextEntryAsync()) @@ -318,7 +318,7 @@ public async ValueTask EntryStream_Dispose_DoesNotThrow_OnNonSeekableStream_LZMA // when FlushAsync() fails on non-seekable streams (LZMA compression) var path = Path.Combine(TEST_ARCHIVES_PATH, "Zip.lzma.dd.zip"); using Stream stream = new ForwardOnlyStream(File.OpenRead(path)); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); // This should not throw, even if internal FlushAsync() fails while (await reader.MoveToNextEntryAsync()) @@ -347,7 +347,7 @@ public async ValueTask Archive_Iteration_DoesNotBreak_WhenFlushThrows_Deflate_As var path = Path.Combine(TEST_ARCHIVES_PATH, "Zip.deflate.dd.zip"); using var fileStream = File.OpenRead(path); using Stream stream = new ThrowOnFlushStream(fileStream); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var count = 0; while (await reader.MoveToNextEntryAsync()) @@ -371,7 +371,7 @@ public async ValueTask Archive_Iteration_DoesNotBreak_WhenFlushThrows_LZMA_Async var path = Path.Combine(TEST_ARCHIVES_PATH, "Zip.lzma.dd.zip"); using var fileStream = File.OpenRead(path); using Stream stream = new ThrowOnFlushStream(fileStream); - await using var reader = ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); + await using var reader = await ReaderFactory.OpenAsyncReader(new AsyncOnlyStream(stream)); var count = 0; while (await reader.MoveToNextEntryAsync()) diff --git a/tests/SharpCompress.Test/packages.lock.json b/tests/SharpCompress.Test/packages.lock.json index baea090e9..78330583c 100644 --- a/tests/SharpCompress.Test/packages.lock.json +++ b/tests/SharpCompress.Test/packages.lock.json @@ -45,23 +45,6 @@ "resolved": "17.14.15", "contentHash": "mXQPJsbuUD2ydq4/ffd8h8tSOFCXec+2xJOVNCvXjuMOq/+5EKHq3D2m2MC2+nUaXeFMSt66VS/J4HdKBixgcw==" }, - "Mono.Posix.NETStandard": { - "type": "Direct", - "requested": "[1.0.0, )", - "resolved": "1.0.0", - "contentHash": "vSN/L1uaVwKsiLa95bYu2SGkF0iY3xMblTfxc8alSziPuVfJpj3geVqHGAA75J7cZkMuKpFVikz82Lo6y6LLdA==" - }, - "xunit": { - "type": "Direct", - "requested": "[2.9.3, )", - "resolved": "2.9.3", - "contentHash": "TlXQBinK35LpOPKHAqbLY4xlEen9TBafjs0V5KnA4wZsoQLQJiirCR4CbIXvOH8NzkW4YeJKP5P/Bnrodm0h9Q==", - 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