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extract.cpp
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extract.cpp
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#include "rar.hpp"
CmdExtract::CmdExtract(CommandData *Cmd)
{
CmdExtract::Cmd=Cmd;
ArcAnalyzed=false;
Analyze={};
TotalFileCount=0;
// Common for all archives involved. Set here instead of DoExtract()
// to use in unrar.dll too.
// We enable it by default in Unix to care about the case when several
// archives are unpacked to same directory with several independent RAR runs.
// Worst case performance penalty for a lot of small files seems to be ~3%.
// 2023.09.15: Windows performance impact seems to be negligible,
// less than 0.5% when extracting mix of small files and folders.
// So for extra security we enabled it for Windows too, even though
// unlike Unix, Windows doesn't expand lnk1 in symlink targets like
// "lnk1/../dir", but converts such path to "dir".
ConvertSymlinkPaths=true;
Unp=new Unpack(&DataIO);
#ifdef RAR_SMP
Unp->SetThreads(Cmd->Threads);
#endif
}
CmdExtract::~CmdExtract()
{
FreeAnalyzeData();
delete Unp;
}
void CmdExtract::FreeAnalyzeData()
{
for (size_t I=0;I<RefList.size();I++)
{
// We can have undeleted temporary reference source here if extraction
// was interrupted early or if user refused to overwrite prompt.
if (!RefList[I].TmpName.empty())
DelFile(RefList[I].TmpName);
}
RefList.clear();
Analyze={};
}
void CmdExtract::DoExtract()
{
#if defined(_WIN_ALL) && !defined(SFX_MODULE) && !defined(SILENT)
Fat32=NotFat32=false;
#endif
SuppressNoFilesMessage=false;
DataIO.SetCurrentCommand(Cmd->Command[0]);
if (Cmd->UseStdin.empty())
{
FindData FD;
while (Cmd->GetArcName(ArcName))
if (FindFile::FastFind(ArcName,&FD))
DataIO.TotalArcSize+=FD.Size;
}
Cmd->ArcNames.Rewind();
while (Cmd->GetArcName(ArcName))
{
if (Cmd->ManualPassword)
Cmd->Password.Clean(); // Clean user entered password before processing next archive.
ReconstructDone=false; // Must be reset here, not in ExtractArchiveInit().
UseExactVolName=false; // Must be reset here, not in ExtractArchiveInit().
while (true)
{
EXTRACT_ARC_CODE Code=ExtractArchive();
if (Code!=EXTRACT_ARC_REPEAT)
break;
}
DataIO.ProcessedArcSize+=DataIO.LastArcSize;
}
// Clean user entered password. Not really required, just for extra safety.
if (Cmd->ManualPassword)
Cmd->Password.Clean();
if (TotalFileCount==0 && Cmd->Command[0]!='I' &&
ErrHandler.GetErrorCode()!=RARX_BADPWD) // Not in case of wrong archive password.
{
if (!SuppressNoFilesMessage)
uiMsg(UIERROR_NOFILESTOEXTRACT,ArcName);
// Other error codes may explain a reason of "no files extracted" clearer,
// so set it only if no other errors found (wrong mask set by user).
if (ErrHandler.GetErrorCode()==RARX_SUCCESS)
ErrHandler.SetErrorCode(RARX_NOFILES);
}
else
if (!Cmd->DisableDone)
if (Cmd->Command[0]=='I')
mprintf(St(MDone));
else
if (ErrHandler.GetErrorCount()==0)
mprintf(St(MExtrAllOk));
else
mprintf(St(MExtrTotalErr),ErrHandler.GetErrorCount());
}
void CmdExtract::ExtractArchiveInit(Archive &Arc)
{
DataIO.AdjustTotalArcSize(&Arc);
FileCount=0;
MatchedArgs=0;
#ifndef SFX_MODULE
FirstFile=true;
#endif
GlobalPassword=Cmd->Password.IsSet() || uiIsGlobalPasswordSet();
DataIO.UnpVolume=false;
PrevProcessed=false;
AllMatchesExact=true;
AnySolidDataUnpackedWell=false;
ArcAnalyzed=false;
StartTime.SetCurrentTime();
LastCheckedSymlink.clear();
}
EXTRACT_ARC_CODE CmdExtract::ExtractArchive()
{
Archive Arc(Cmd);
if (!Cmd->UseStdin.empty())
{
Arc.SetHandleType(FILE_HANDLESTD);
#ifdef USE_QOPEN
Arc.SetProhibitQOpen(true);
#endif
}
else
{
// We commented out "&& !defined(WINRAR)", because WinRAR GUI code resets
// the cache for usual test command, but not for test after archiving.
#if defined(_WIN_ALL) && !defined(SFX_MODULE)
if (Cmd->Command[0]=='T' || Cmd->Test)
ResetFileCache(ArcName); // Reset the file cache when testing an archive.
#endif
if (!Arc.WOpen(ArcName))
return EXTRACT_ARC_NEXT;
}
if (!Arc.IsArchive(true))
{
#if !defined(SFX_MODULE) && !defined(RARDLL)
if (CmpExt(ArcName,L"rev"))
{
std::wstring FirstVolName;
VolNameToFirstName(ArcName,FirstVolName,true);
// If several volume names from same volume set are specified
// and current volume is not first in set and first volume is present
// and specified too, let's skip the current volume.
if (wcsicomp(ArcName,FirstVolName)!=0 && FileExist(FirstVolName) &&
Cmd->ArcNames.Search(FirstVolName,false))
return EXTRACT_ARC_NEXT;
RecVolumesTest(Cmd,NULL,ArcName);
TotalFileCount++; // Suppress "No files to extract" message.
return EXTRACT_ARC_NEXT;
}
#endif
mprintf(St(MNotRAR),ArcName.c_str());
#ifndef SFX_MODULE
if (CmpExt(ArcName,L"rar"))
#endif
ErrHandler.SetErrorCode(RARX_WARNING);
return EXTRACT_ARC_NEXT;
}
if (Arc.FailedHeaderDecryption) // Bad archive password.
return EXTRACT_ARC_NEXT;
#ifndef SFX_MODULE
if (Arc.Volume && !Arc.FirstVolume && !UseExactVolName)
{
std::wstring FirstVolName;
VolNameToFirstName(ArcName,FirstVolName,Arc.NewNumbering);
// If several volume names from same volume set are specified
// and current volume is not first in set and first volume is present
// and specified too, let's skip the current volume.
if (wcsicomp(ArcName,FirstVolName)!=0 && FileExist(FirstVolName) &&
Cmd->ArcNames.Search(FirstVolName,false))
return EXTRACT_ARC_NEXT;
}
#endif
Arc.ViewComment(); // Must be before possible EXTRACT_ARC_REPEAT.
int64 VolumeSetSize=0; // Total size of volumes after the current volume.
#ifndef SFX_MODULE
if (!ArcAnalyzed && Cmd->UseStdin.empty())
{
AnalyzeArchive(Arc.FileName,Arc.Volume,Arc.NewNumbering);
ArcAnalyzed=true; // Avoid repeated analysis on EXTRACT_ARC_REPEAT.
}
#endif
if (Arc.Volume)
{
#ifndef SFX_MODULE
// Try to speed up extraction for independent solid volumes by starting
// extraction from non-first volume if we can.
if (!Analyze.StartName.empty())
{
ArcName=Analyze.StartName;
Analyze.StartName.clear();
UseExactVolName=true;
return EXTRACT_ARC_REPEAT;
}
#endif
// Calculate the total size of all accessible volumes.
// This size is necessary to display the correct total progress indicator.
std::wstring NextName=Arc.FileName;
while (true)
{
// First volume is already added to DataIO.TotalArcSize
// in initial TotalArcSize calculation in DoExtract.
// So we skip it and start from second volume.
NextVolumeName(NextName,!Arc.NewNumbering);
FindData FD;
if (FindFile::FastFind(NextName,&FD))
VolumeSetSize+=FD.Size;
else
break;
}
DataIO.TotalArcSize+=VolumeSetSize;
}
ExtractArchiveInit(Arc);
if (Cmd->Command[0]=='T' || Cmd->Command[0]=='I')
Cmd->Test=true;
if (Cmd->Command[0]=='I')
{
Cmd->DisablePercentage=true;
}
else
uiStartArchiveExtract(!Cmd->Test,ArcName);
#ifndef SFX_MODULE
if (Analyze.StartPos!=0)
{
Arc.Seek(Analyze.StartPos,SEEK_SET);
Analyze.StartPos=0;
}
#endif
while (1)
{
size_t Size=Arc.ReadHeader();
bool Repeat=false;
if (!ExtractCurrentFile(Arc,Size,Repeat))
if (Repeat)
{
// If we started extraction from not first volume and need to
// restart it from first, we must set DataIO.TotalArcSize to size
// of new first volume to display the total progress correctly.
FindData NewArc;
if (FindFile::FastFind(ArcName,&NewArc))
DataIO.TotalArcSize=NewArc.Size;
return EXTRACT_ARC_REPEAT;
}
else
break;
}
#if !defined(SFX_MODULE) && !defined(RARDLL)
if (Cmd->Test && Arc.Volume)
RecVolumesTest(Cmd,&Arc,ArcName);
#endif
return EXTRACT_ARC_NEXT;
}
bool CmdExtract::ExtractCurrentFile(Archive &Arc,size_t HeaderSize,bool &Repeat)
{
wchar Command=Cmd->Command[0];
if (HeaderSize==0)
if (DataIO.UnpVolume)
{
#ifdef NOVOLUME
return false;
#else
// Supposing we unpack an old RAR volume without the end of archive
// record and last file is not split between volumes.
if (!MergeArchive(Arc,&DataIO,false,Command))
{
ErrHandler.SetErrorCode(RARX_WARNING);
return false;
}
#endif
}
else
return false;
HEADER_TYPE HeaderType=Arc.GetHeaderType();
if (HeaderType==HEAD_FILE)
{
// Unlike Arc.FileName, ArcName might store an old volume name here.
if (Analyze.EndPos!=0 && Analyze.EndPos==Arc.CurBlockPos &&
(Analyze.EndName.empty() || Analyze.EndName==Arc.FileName))
return false;
}
else
{
#ifndef SFX_MODULE
if (Arc.Format==RARFMT15 && HeaderType==HEAD3_OLDSERVICE && PrevProcessed)
SetExtraInfo20(Cmd,Arc,DestFileName);
#endif
if (HeaderType==HEAD_SERVICE && PrevProcessed)
SetExtraInfo(Cmd,Arc,DestFileName);
if (HeaderType==HEAD_ENDARC)
if (Arc.EndArcHead.NextVolume)
{
#ifdef NOVOLUME
return false;
#else
if (!MergeArchive(Arc,&DataIO,false,Command))
{
ErrHandler.SetErrorCode(RARX_WARNING);
return false;
}
Arc.Seek(Arc.CurBlockPos,SEEK_SET);
return true;
#endif
}
else
return false;
Arc.SeekToNext();
return true;
}
PrevProcessed=false;
// We can get negative sizes in corrupt archive and it is unacceptable
// for size comparisons in ComprDataIO::UnpRead, where we cast sizes
// to size_t and can exceed another read or available size. We could fix it
// when reading an archive. But we prefer to do it here, because this
// function is called directly in unrar.dll, so we fix bad parameters
// passed to dll. Also we want to see real negative sizes in the listing
// of corrupt archive. To prevent the uninitialized data access, perform
// these checks after rejecting zero length and non-file headers above.
if (Arc.FileHead.PackSize<0)
Arc.FileHead.PackSize=0;
if (Arc.FileHead.UnpSize<0)
Arc.FileHead.UnpSize=0;
// This check duplicates Analyze.EndPos and Analyze.EndName
// in all cases except volumes on removable media.
if (!Cmd->Recurse && MatchedArgs>=Cmd->FileArgs.ItemsCount() && AllMatchesExact)
return false;
int MatchType=MATCH_WILDSUBPATH;
bool EqualNames=false;
std::wstring MatchedArg;
bool MatchFound=Cmd->IsProcessFile(Arc.FileHead,&EqualNames,MatchType,0,&MatchedArg)!=0;
#ifndef SFX_MODULE
if (Cmd->ExclPath==EXCL_BASEPATH)
{
Cmd->ArcPath=MatchedArg;
GetPathWithSep(Cmd->ArcPath,Cmd->ArcPath);
if (IsWildcard(Cmd->ArcPath)) // Cannot correctly process path*\* masks here.
Cmd->ArcPath.clear();
}
#endif
if (MatchFound && !EqualNames)
AllMatchesExact=false;
Arc.ConvertAttributes();
#if !defined(SFX_MODULE) && !defined(RARDLL)
if (Arc.FileHead.SplitBefore && FirstFile && !UseExactVolName)
{
std::wstring StartVolName;
GetFirstVolIfFullSet(ArcName,Arc.NewNumbering,StartVolName);
if (StartVolName!=ArcName && FileExist(StartVolName))
{
ArcName=StartVolName;
Cmd->ArcName=ArcName; // For GUI "Delete archive after extraction".
// If first volume name does not match the current name and if such
// volume name really exists, let's unpack from this first volume.
Repeat=true;
return false;
}
#ifndef RARDLL
if (!ReconstructDone)
{
ReconstructDone=true;
if (RecVolumesRestore(Cmd,Arc.FileName,true))
{
Repeat=true;
return false;
}
}
#endif
}
#endif
std::wstring ArcFileName;
ConvertPath(&Arc.FileHead.FileName,&ArcFileName);
if (Arc.FileHead.Version)
{
if (Cmd->VersionControl!=1 && !EqualNames)
{
if (Cmd->VersionControl==0)
MatchFound=false;
int Version=ParseVersionFileName(ArcFileName,false);
if (Cmd->VersionControl-1==Version)
ParseVersionFileName(ArcFileName,true);
else
MatchFound=false;
}
}
else
if (!Arc.IsArcDir() && Cmd->VersionControl>1)
MatchFound=false;
DataIO.UnpVolume=Arc.FileHead.SplitAfter;
DataIO.NextVolumeMissing=false;
Arc.Seek(Arc.NextBlockPos-Arc.FileHead.PackSize,SEEK_SET);
bool ExtrFile=false;
bool SkipSolid=false;
#ifndef SFX_MODULE
if (FirstFile && (MatchFound || Arc.Solid) && Arc.FileHead.SplitBefore)
{
if (MatchFound)
{
uiMsg(UIERROR_NEEDPREVVOL,Arc.FileName,ArcFileName);
#ifdef RARDLL
Cmd->DllError=ERAR_BAD_DATA;
#endif
ErrHandler.SetErrorCode(RARX_OPEN);
}
MatchFound=false;
}
FirstFile=false;
#endif
bool RefTarget=false;
if (!MatchFound)
for (size_t I=0;I<RefList.size();I++)
if (ArcFileName == RefList[I].RefName)
{
ExtractRef &MatchedRef=RefList[I];
if (!Cmd->Test) // While harmless, it is useless for 't'.
{
// If reference source isn't selected, but target is selected,
// we unpack the source under the temporary name and then rename
// or copy it to target name. We do not unpack it under the target
// name immediately, because the same source can be used by multiple
// targets and it is possible that first target isn't unpacked
// for some reason. Also targets might have associated service blocks
// like ACLs. All this would complicate processing a lot.
DestFileName=!Cmd->TempPath.empty() ? Cmd->TempPath:Cmd->ExtrPath;
AddEndSlash(DestFileName);
DestFileName+=L"__tmp_reference_source_";
MkTemp(DestFileName);
MatchedRef.TmpName=DestFileName;
}
RefTarget=true; // Need it even for 't' to test the reference source.
break;
}
if (Arc.FileHead.Encrypted && Cmd->SkipEncrypted)
if (Arc.Solid)
return false; // Abort the entire extraction for solid archive.
else
MatchFound=false; // Skip only the current file for non-solid archive.
if (MatchFound || RefTarget || (SkipSolid=Arc.Solid)!=false)
{
// First common call of uiStartFileExtract. It is done before overwrite
// prompts, so if SkipSolid state is changed below, we'll need to make
// additional uiStartFileExtract calls with updated parameters.
if (!uiStartFileExtract(ArcFileName,!Cmd->Test,Cmd->Test && Command!='I',SkipSolid))
return false;
if (!RefTarget)
ExtrPrepareName(Arc,ArcFileName,DestFileName);
// DestFileName can be set empty in case of excessive -ap switch.
ExtrFile=!SkipSolid && !DestFileName.empty() && !Arc.FileHead.SplitBefore;
if ((Cmd->FreshFiles || Cmd->UpdateFiles) && (Command=='E' || Command=='X'))
{
FindData FD;
if (FindFile::FastFind(DestFileName,&FD))
{
if (FD.mtime >= Arc.FileHead.mtime)
{
// If directory already exists and its modification time is newer
// than start of extraction, it is likely it was created
// when creating a path to one of already extracted items.
// In such case we'll better update its time even if archived
// directory is older.
if (!FD.IsDir || FD.mtime<StartTime)
ExtrFile=false;
}
}
else
if (Cmd->FreshFiles)
ExtrFile=false;
}
if (!CheckUnpVer(Arc,ArcFileName))
{
ErrHandler.SetErrorCode(RARX_FATAL);
#ifdef RARDLL
Cmd->DllError=ERAR_UNKNOWN_FORMAT;
#endif
Arc.SeekToNext();
return !Arc.Solid; // Can try extracting next file only in non-solid archive.
}
if (Arc.FileHead.Encrypted)
{
RarCheckPassword CheckPwd;
if (Arc.Format==RARFMT50 && Arc.FileHead.UsePswCheck && !Arc.BrokenHeader)
CheckPwd.Set(Arc.FileHead.Salt,Arc.FileHead.InitV,Arc.FileHead.Lg2Count,Arc.FileHead.PswCheck);
while (true) // Repeat the password prompt for wrong and empty passwords.
{
// Stop archive extracting if user cancelled a password prompt.
#ifdef RARDLL
if (!ExtrDllGetPassword())
{
Cmd->DllError=ERAR_MISSING_PASSWORD;
return false;
}
#else
if (!ExtrGetPassword(Arc,ArcFileName,CheckPwd.IsSet() ? &CheckPwd:NULL))
{
SuppressNoFilesMessage=true;
return false;
}
#endif
// Set a password before creating the file, so we can skip creating
// in case of wrong password.
SecPassword FilePassword=Cmd->Password;
#if defined(_WIN_ALL) && !defined(SFX_MODULE)
ConvertDosPassword(Arc,FilePassword);
#endif
byte PswCheck[SIZE_PSWCHECK];
bool EncSet=DataIO.SetEncryption(false,Arc.FileHead.CryptMethod,
&FilePassword,Arc.FileHead.SaltSet ? Arc.FileHead.Salt:nullptr,
Arc.FileHead.InitV,Arc.FileHead.Lg2Count,
Arc.FileHead.HashKey,PswCheck);
// If header is damaged, we cannot rely on password check value,
// because it can be damaged too.
if (EncSet && Arc.FileHead.UsePswCheck && !Arc.BrokenHeader &&
memcmp(Arc.FileHead.PswCheck,PswCheck,SIZE_PSWCHECK)!=0)
{
if (GlobalPassword) // For -p<pwd> or Ctrl+P to avoid the infinite loop.
{
// This message is used by Android GUI to reset cached passwords.
// Update appropriate code if changed.
uiMsg(UIERROR_BADPSW,Arc.FileName,ArcFileName);
}
else // For passwords entered manually.
{
// This message is used by Android GUI and Windows GUI and SFX to
// reset cached passwords. Update appropriate code if changed.
uiMsg(UIWAIT_BADPSW,Arc.FileName,ArcFileName);
Cmd->Password.Clean();
// Avoid new requests for unrar.dll to prevent the infinite loop
// if app always returns the same password.
#ifndef RARDLL
continue; // Request a password again.
#endif
}
#ifdef RARDLL
// If we already have ERAR_EOPEN as result of missing volume,
// we should not replace it with less precise ERAR_BAD_PASSWORD.
if (Cmd->DllError!=ERAR_EOPEN)
Cmd->DllError=ERAR_BAD_PASSWORD;
#endif
ErrHandler.SetErrorCode(RARX_BADPWD);
ExtrFile=false;
}
break;
}
}
else
DataIO.SetEncryption(false,CRYPT_NONE,NULL,NULL,NULL,0,NULL,NULL);
// Per file symlink conversion flag. Can be turned off in unrar.dll.
bool CurConvertSymlinkPaths=ConvertSymlinkPaths;
#ifdef RARDLL
if (!Cmd->DllDestName.empty())
{
DestFileName=Cmd->DllDestName;
// If unrar.dll sets the entire destination pathname, there is no
// destination path and we can't convert symlinks, because we would
// risk converting important user or system symlinks in this case.
// If DllDestName is set, it turns off our path processing and app
// invoking the library cares about everything including safety.
CurConvertSymlinkPaths=false;
}
#endif
if (ExtrFile && Command!='P' && !Cmd->Test && !Cmd->AbsoluteLinks &&
CurConvertSymlinkPaths)
ExtrFile=LinksToDirs(DestFileName,Cmd->ExtrPath,LastCheckedSymlink);
File CurFile;
bool LinkEntry=Arc.FileHead.RedirType!=FSREDIR_NONE;
if (LinkEntry && (Arc.FileHead.RedirType!=FSREDIR_FILECOPY))
{
if (Cmd->SkipSymLinks && (Arc.FileHead.RedirType==FSREDIR_UNIXSYMLINK ||
Arc.FileHead.RedirType==FSREDIR_WINSYMLINK || Arc.FileHead.RedirType==FSREDIR_JUNCTION))
ExtrFile=false;
if (ExtrFile && Command!='P' && !Cmd->Test)
{
// Overwrite prompt for symbolic and hard links and when we move
// a temporary file to the file reference instead of copying it.
bool UserReject=false;
if (FileExist(DestFileName))
FileCreate(Cmd,NULL,DestFileName,&UserReject,Arc.FileHead.UnpSize,&Arc.FileHead.mtime);
if (UserReject)
ExtrFile=false;
}
}
else
if (Arc.IsArcDir())
{
if (!ExtrFile || Command=='P' || Command=='I' || Command=='E' || Cmd->ExclPath==EXCL_SKIPWHOLEPATH)
return true;
TotalFileCount++;
ExtrCreateDir(Arc,ArcFileName);
// It is important to not increment MatchedArgs here, so we extract
// dir with its entire contents and not dir record only even if
// dir record precedes files.
return true;
}
else
if (ExtrFile) // Create files and file copies (FSREDIR_FILECOPY).
{
// Check the dictionary size before creating a file and issuing
// any overwrite prompts.
if (!CheckWinLimit(Arc,ArcFileName))
return false;
ExtrFile=ExtrCreateFile(Arc,CurFile);
}
if (!ExtrFile && Arc.Solid)
{
SkipSolid=true;
ExtrFile=true;
// We changed SkipSolid, so we need to call uiStartFileExtract
// with "Skip" parameter to change the operation status
// from "extracting" to "skipping". For example, it can be necessary
// if user answered "No" to overwrite prompt when unpacking
// a solid archive.
if (!uiStartFileExtract(ArcFileName,false,false,true))
return false;
// Check the dictionary size also for skipping files.
if (!CheckWinLimit(Arc,ArcFileName))
return false;
}
if (ExtrFile)
{
// Set it in test mode, so we also test subheaders such as NTFS streams
// after tested file.
if (Cmd->Test)
PrevProcessed=true;
bool TestMode=Cmd->Test || SkipSolid; // Unpack to memory, not to disk.
if (!SkipSolid)
{
if (!TestMode && Command!='P' && CurFile.IsDevice())
{
uiMsg(UIERROR_INVALIDNAME,Arc.FileName,DestFileName);
ErrHandler.WriteError(Arc.FileName,DestFileName);
}
TotalFileCount++;
}
FileCount++;
if (Command!='I' && !Cmd->DisableNames)
if (SkipSolid)
mprintf(St(MExtrSkipFile),ArcFileName.c_str());
else
switch(Cmd->Test ? 'T':Command) // "Test" can be also enabled by -t switch.
{
case 'T':
mprintf(St(MExtrTestFile),ArcFileName.c_str());
break;
#ifndef SFX_MODULE
case 'P':
mprintf(St(MExtrPrinting),ArcFileName.c_str());
break;
#endif
case 'X':
case 'E':
mprintf(St(MExtrFile),DestFileName.c_str());
break;
}
if (!Cmd->DisablePercentage && !Cmd->DisableNames)
mprintf(L" ");
if (Cmd->DisableNames)
uiEolAfterMsg(); // Avoid erasing preceding messages by percentage indicator in -idn mode.
DataIO.CurUnpRead=0;
DataIO.CurUnpWrite=0;
DataIO.UnpHash.Init(Arc.FileHead.FileHash.Type,Cmd->Threads);
DataIO.PackedDataHash.Init(Arc.FileHead.FileHash.Type,Cmd->Threads);
DataIO.SetPackedSizeToRead(Arc.FileHead.PackSize);
DataIO.SetFiles(&Arc,&CurFile);
DataIO.SetTestMode(TestMode);
DataIO.SetSkipUnpCRC(SkipSolid);
#if defined(_WIN_ALL) && !defined(SFX_MODULE) && !defined(SILENT)
if (!TestMode && !Arc.BrokenHeader &&
Arc.FileHead.UnpSize>0xffffffff && (Fat32 || !NotFat32))
{
if (!Fat32) // Not detected yet.
NotFat32=!(Fat32=IsFAT(Cmd->ExtrPath));
if (Fat32)
uiMsg(UIMSG_FAT32SIZE); // Inform user about FAT32 size limit.
}
#endif
uint64 Preallocated=0;
if (!TestMode && !Arc.BrokenHeader && Arc.FileHead.UnpSize>1000000 &&
Arc.FileHead.PackSize*1024>Arc.FileHead.UnpSize && Arc.IsSeekable() &&
(Arc.FileHead.UnpSize<100000000 || Arc.FileLength()>Arc.FileHead.PackSize))
{
CurFile.Prealloc(Arc.FileHead.UnpSize);
Preallocated=Arc.FileHead.UnpSize;
}
CurFile.SetAllowDelete(!Cmd->KeepBroken);
bool FileCreateMode=!TestMode && !SkipSolid && Command!='P';
bool ShowChecksum=true; // Display checksum verification result.
bool LinkSuccess=true; // Assume success for test mode.
if (LinkEntry)
{
FILE_SYSTEM_REDIRECT Type=Arc.FileHead.RedirType;
if (Type==FSREDIR_HARDLINK || Type==FSREDIR_FILECOPY)
{
std::wstring RedirName;
// 2022.11.15: Might be needed when unpacking WinRAR 5.0 links with
// Unix RAR. WinRAR 5.0 used \ path separators here, when beginning
// from 5.10 even Windows version uses / internally and converts
// them to \ when reading FHEXTRA_REDIR.
// We must perform this conversion before ConvertPath call,
// so paths mixing different slashes like \dir1/dir2\file are
// processed correctly.
SlashToNative(Arc.FileHead.RedirName,RedirName);
ConvertPath(&RedirName,&RedirName);
std::wstring NameExisting;
ExtrPrepareName(Arc,RedirName,NameExisting);
if (FileCreateMode && !NameExisting.empty()) // *NameExisting can be empty in case of excessive -ap switch.
if (Type==FSREDIR_HARDLINK)
LinkSuccess=ExtractHardlink(Cmd,DestFileName,NameExisting);
else
LinkSuccess=ExtractFileCopy(CurFile,Arc.FileName,RedirName,DestFileName,NameExisting,Arc.FileHead.UnpSize);
}
else
if (Type==FSREDIR_UNIXSYMLINK || Type==FSREDIR_WINSYMLINK || Type==FSREDIR_JUNCTION)
{
if (FileCreateMode)
{
bool UpLink;
LinkSuccess=ExtractSymlink(Cmd,DataIO,Arc,DestFileName,UpLink);
ConvertSymlinkPaths|=LinkSuccess && UpLink;
// We do not actually need to reset the cache here if we cache
// only the single last checked path, because at this point
// it will always contain the link own path and link can't
// overwrite its parent folder. But if we ever decide to cache
// several already checked paths, we'll need to reset them here.
// Otherwise if no files were created in one of such paths,
// let's say because of file create error, it might be possible
// to overwrite the path with link and avoid checks. We keep this
// code here as a reminder in case of possible modifications.
LastCheckedSymlink.clear(); // Reset cache for safety reason.
}
}
else
{
uiMsg(UIERROR_UNKNOWNEXTRA,Arc.FileName,ArcFileName);
LinkSuccess=false;
}
if (!LinkSuccess || Arc.Format==RARFMT15 && !FileCreateMode)
{
// RAR 5.x links have a valid data checksum even in case of
// failure, because they do not store any data.
// We do not want to display "OK" in this case.
// For 4.x symlinks we verify the checksum only when extracting,
// but not when testing an archive.
ShowChecksum=false;
}
PrevProcessed=FileCreateMode && LinkSuccess;
}
else
if (!Arc.FileHead.SplitBefore)
if (Arc.FileHead.Method==0)
UnstoreFile(DataIO,Arc.FileHead.UnpSize);
else
{
try
{
Unp->Init(Arc.FileHead.WinSize,Arc.FileHead.Solid);
}
catch (std::bad_alloc)
{
if (Arc.FileHead.WinSize>=0x40000000)
uiMsg(UIERROR_EXTRDICTOUTMEM,Arc.FileName,uint(Arc.FileHead.WinSize/0x40000000+(Arc.FileHead.WinSize%0x40000000!=0 ? 1 : 0)));
throw;
}
Unp->SetDestSize(Arc.FileHead.UnpSize);
#ifndef SFX_MODULE
// RAR 1.3 - 1.5 archives do not set per file solid flag.
if (Arc.Format!=RARFMT50 && Arc.FileHead.UnpVer<=15)
Unp->DoUnpack(15,FileCount>1 && Arc.Solid);
else
#endif
Unp->DoUnpack(Arc.FileHead.UnpVer,Arc.FileHead.Solid);
}
Arc.SeekToNext();
// We check for "split after" flag to detect partially extracted files
// from incomplete volume sets. For them file header contains packed
// data hash, which must not be compared against unpacked data hash
// to prevent accidental match. Moreover, for -m0 volumes packed data
// hash would match truncated unpacked data hash and lead to fake "OK"
// in incomplete volume set.
bool ValidCRC=!Arc.FileHead.SplitAfter && DataIO.UnpHash.Cmp(&Arc.FileHead.FileHash,Arc.FileHead.UseHashKey ? Arc.FileHead.HashKey:NULL);
// We set AnySolidDataUnpackedWell to true if we found at least one
// valid non-zero solid file in preceding solid stream. If it is true
// and if current encrypted file is broken, we do not need to hint
// about a wrong password and can report CRC error only.
if (!Arc.FileHead.Solid)
AnySolidDataUnpackedWell=false; // Reset the flag, because non-solid file is found.
else
if (Arc.FileHead.Method!=0 && Arc.FileHead.UnpSize>0 && ValidCRC)
AnySolidDataUnpackedWell=true;
bool BrokenFile=false;
// Checksum is not calculated in skip solid mode for performance reason.
if (!SkipSolid && ShowChecksum)
{
if (ValidCRC)
{
if (Command!='P' && Command!='I' && !Cmd->DisableNames)
mprintf(L"%s%s ",Cmd->DisablePercentage ? L" ":L"\b\b\b\b\b ",
Arc.FileHead.FileHash.Type==HASH_NONE ? L" ?":St(MOk));
}
else
{
if (Arc.FileHead.Encrypted && (!Arc.FileHead.UsePswCheck ||
Arc.BrokenHeader) && !AnySolidDataUnpackedWell)
uiMsg(UIERROR_CHECKSUMENC,Arc.FileName,ArcFileName);
else
uiMsg(UIERROR_CHECKSUM,Arc.FileName,ArcFileName);
BrokenFile=true;
ErrHandler.SetErrorCode(RARX_CRC);
#ifdef RARDLL
// If we already have ERAR_EOPEN as result of missing volume
// or ERAR_BAD_PASSWORD for RAR5 wrong password,
// we should not replace it with less precise ERAR_BAD_DATA.
if (Cmd->DllError!=ERAR_EOPEN && Cmd->DllError!=ERAR_BAD_PASSWORD)
Cmd->DllError=ERAR_BAD_DATA;
#endif
}
}
else
{
// We check SkipSolid to remove percent for skipped solid files only.
// We must not apply these \b to links with ShowChecksum==false
// and their possible error messages.
if (SkipSolid)
mprintf(L"\b\b\b\b\b ");
}
if (!TestMode && (Command=='X' || Command=='E') &&
(!LinkEntry || LinkSuccess) && (!BrokenFile || Cmd->KeepBroken))
{
// Set everything for usual files and file references.
bool SetAll=!LinkEntry || Arc.FileHead.RedirType==FSREDIR_FILECOPY;
// Set time and adjust size for usual files and references.
// Symlink time requires the special treatment and it is set directly
// after creating a symlink.
bool SetTimeAndSize=SetAll;
// Set file attributes for usual files, references and hard links.
// Hard link shares the file metadata with link target, so we do not
// need to set link time or owner. But when we overwrite an existing
// link, we can call PrepareToDelete(), which affects link target
// attributes too. So we set link attributes to restore both target
// and link attributes if PrepareToDelete() has changed them.
bool SetAttr=SetAll || Arc.FileHead.RedirType==FSREDIR_HARDLINK;
// Call SetFileHeaderExtra to set Unix user and group for usual files,
// references and symlinks. Unix symlink can have its own owner data.
bool SetExtra=SetAll || Arc.FileHead.RedirType==FSREDIR_UNIXSYMLINK;
// Below we use DestFileName instead of CurFile.FileName,
// so we can set file attributes also for hard links, which do not
// have the open CurFile. These strings are the same for other items.
if (SetTimeAndSize)
{
// We could preallocate more space than really written to broken file
// or file with crafted header.
if (Preallocated>0 && (BrokenFile || DataIO.CurUnpWrite!=Preallocated))
CurFile.Truncate();
CurFile.SetOpenFileTime(
Cmd->xmtime==EXTTIME_NONE ? NULL:&Arc.FileHead.mtime,
Cmd->xctime==EXTTIME_NONE ? NULL:&Arc.FileHead.ctime,
Cmd->xatime==EXTTIME_NONE ? NULL:&Arc.FileHead.atime);
CurFile.Close();
}
if (SetExtra)
SetFileHeaderExtra(Cmd,Arc,DestFileName);
if (SetTimeAndSize)
CurFile.SetCloseFileTime(
Cmd->xmtime==EXTTIME_NONE ? NULL:&Arc.FileHead.mtime,
Cmd->xatime==EXTTIME_NONE ? NULL:&Arc.FileHead.atime);
if (SetAttr)
{
#if defined(_WIN_ALL) && !defined(SFX_MODULE)
if (Cmd->SetCompressedAttr &&
(Arc.FileHead.FileAttr & FILE_ATTRIBUTE_COMPRESSED)!=0)
SetFileCompression(DestFileName,true);
if (Cmd->ClearArc)
Arc.FileHead.FileAttr&=~FILE_ATTRIBUTE_ARCHIVE;
#endif
if (!Cmd->IgnoreGeneralAttr && !SetFileAttr(DestFileName,Arc.FileHead.FileAttr))
{
uiMsg(UIERROR_FILEATTR,Arc.FileName,DestFileName);
// Android cannot set file attributes and while UIERROR_FILEATTR
// above is handled by Android RAR silently, this call would cause