Check for broken file #736

src/SharpCompress/Common/Tar/TarEntry.cs

@@ -72,6 +72,10 @@ ArchiveEncoding archiveEncoding
                     yield return new TarEntry(new TarFilePart(h, null), compressionType);
                 }
             }
+            else
+            {
+                throw new IncompleteArchiveException("Unexpected EOF reading tar file");
+            }
         }
     }
 }

tests/SharpCompress.Test/Tar/TarArchiveTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.IO;
 using System.Linq;
 using SharpCompress.Archives;

tests/SharpCompress.Test/Tar/TarReaderTests.cs

@@ -183,6 +183,25 @@ public void Tar_With_TarGz_With_Flushed_EntryStream()
         }
     }
 
+    [Fact]
+    public void Tar_Broken_Stream()
+    {
+        string archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar");
+        using (Stream stream = File.OpenRead(archiveFullPath))
+        using (IReader reader = ReaderFactory.Open(stream))
+        {
+            var memoryStream = new MemoryStream();
+
+            Action action = () => reader.MoveToNextEntry();
+            var exception = Record.Exception(action);
+            Assert.Null(exception);
+            reader.MoveToNextEntry();
+            reader.WriteEntryTo(memoryStream);
+            stream.Close();
+            Assert.Throws<IncompleteArchiveException>(action);
+        }
+    }
+
 #if !NETFRAMEWORK
     [Fact]
     public void Tar_GZip_With_Symlink_Entries()