private static void ReadIntoInstance(ZipFile zf)
{
lock (zf)
{
try
{
ZipEntry e;
ZipDirEntry de;
zf.InitializeEntries(false);
if (zf.Verbose)
{
if (zf.Name == null)
{
zf.StatusMessageTextWriter.WriteLine("Reading zip from stream...");
}
else
{
zf.StatusMessageTextWriter.WriteLine("Reading zip {0}...", zf.Name);
}
}
while ((e = ZipEntry.Read(zf.ReadStream, zf.Encoding)) != null)
{
if (zf.Verbose)
{
zf.StatusMessageTextWriter.WriteLine(" {0}", e.FileName);
}
zf._entries.Add(e);
}
zf.IndexEntriesAndTrackChangesSinceNow();
var index = zf._entriesIndex;
zf._direntries = new List <ZipDirEntry>();
while ((de = ZipDirEntry.Read(zf.ReadStream, zf.Encoding)) != null)
{
zf._direntries.Add(de);
if (index.ContainsKey(de.FileName))
{
var e1 = index[de.FileName];
e1.Comment = de.Comment;
if (de.IsDirectory)
{
e1.MarkAsDirectory();
}
}
}
ReadCentralDirectoryFooter(zf);
if (!(!zf.Verbose || String.IsNullOrEmpty(zf.Comment)))
{
zf.StatusMessageTextWriter.WriteLine("Zip file Comment: {0}", zf.Comment);
}
}
catch (Exception e1)
{
if (zf._ReadStreamIsOurs && (zf._readstream != null))
{
try
{
zf._readstream.Close();
zf._readstream.Dispose();
zf._readstream = null;
}
finally
{
}
}
throw new ZipException("Exception while reading", e1);
}
}
}
public static ZipDirEntry Read(Stream s, Encoding expectedEncoding)
{
int signature = ZipSharedUtilities.ReadSignature(s);
if (IsNotValidSig(signature))
{
s.Seek(-4L, SeekOrigin.Current);
if (signature != 0x6054b50L)
{
throw new BadReadException(String.Format(" ZipDirEntry::Read(): Bad signature ({0:X8}) at position 0x{1:X8}", signature, s.Position));
}
return null;
}
byte[] block = new byte[0x2a];
if (s.Read(block, 0, block.Length) != block.Length)
{
return null;
}
int i = 0;
ZipDirEntry zde = new ZipDirEntry();
short versionMadeBy = (short) (block[i++] + (block[i++] * 0x100));
short versionNeeded = (short) (block[i++] + (block[i++] * 0x100));
short bitField = (short) (block[i++] + (block[i++] * 0x100));
short compressionMethod = (short) (block[i++] + (block[i++] * 0x100));
int lastModDateTime = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
int crc32 = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
int compressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
int uncompressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
short filenameLength = (short) (block[i++] + (block[i++] * 0x100));
short extraFieldLength = (short) (block[i++] + (block[i++] * 0x100));
short commentLength = (short) (block[i++] + (block[i++] * 0x100));
i += 2;
zde._InternalFileAttrs = (short) (block[i++] + (block[i++] * 0x100));
zde._ExternalFileAttrs = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
block = new byte[filenameLength];
int n = s.Read(block, 0, block.Length);
if ((bitField & 0x800) == 0x800)
{
zde._FileName = ZipSharedUtilities.Utf8StringFromBuffer(block, block.Length);
}
else
{
zde._FileName = ZipSharedUtilities.StringFromBuffer(block, block.Length, expectedEncoding);
}
if (extraFieldLength > 0)
{
zde._Extra = new byte[extraFieldLength];
n = s.Read(zde._Extra, 0, zde._Extra.Length);
}
if (commentLength > 0)
{
block = new byte[commentLength];
n = s.Read(block, 0, block.Length);
if ((bitField & 0x800) == 0x800)
{
zde._Comment = ZipSharedUtilities.Utf8StringFromBuffer(block, block.Length);
}
else
{
zde._Comment = ZipSharedUtilities.StringFromBuffer(block, block.Length, expectedEncoding);
}
}
return zde;
}
private static bool ReadHeader(ZipEntry ze, Encoding defaultEncoding)
{
// no seek - stream integrity should be protected by the caller
int bytesRead = 0;
ze._RelativeOffsetOfHeader = (int)ze.ArchiveStream.Position;
int signature = ZipSharedUtilities.ReadSignature(ze.ArchiveStream);
bytesRead += 4;
if (IsNotValidSig(signature))
{
ze.ArchiveStream.Seek(-4L, SeekOrigin.Current);
if (ZipDirEntry.IsNotValidSig(signature) && (signature != 0x6054b50L))
{
throw new BadReadException(String.Format(" ZipEntry::ReadHeader(): Bad signature (0x{0:X8}) at position 0x{1:X8}", signature, ze.ArchiveStream.Position));
}
return(false);
}
byte[] block = new byte[0x1a];
int n = ze.ArchiveStream.Read(block, 0, block.Length);
if (n != block.Length)
{
return(false);
}
bytesRead += n;
int i = 0;
ze._VersionNeeded = (short)(block[i++] + (block[i++] * 0x100));
ze._BitField = (short)(block[i++] + (block[i++] * 0x100));
ze._CompressionMethod = (short)(block[i++] + (block[i++] * 0x100));
ze._TimeBlob = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
ze._LastModified = ZipSharedUtilities.PackedToDateTime(ze._TimeBlob);
if ((ze._BitField & 8) != 8)
{
ze._Crc32 = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
ze._CompressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
ze._UncompressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
}
else
{
i += 12;
}
short filenameLength = (short)(block[i++] + (block[i++] * 0x100));
short extraFieldLength = (short)(block[i++] + (block[i++] * 0x100));
block = new byte[filenameLength];
n = ze.ArchiveStream.Read(block, 0, block.Length);
bytesRead += n;
var s1 = ZipSharedUtilities.StringFromBuffer(block, block.Length, Encoding.GetEncoding(1251));
var s2 = ZipSharedUtilities.StringFromBuffer(block, block.Length, Encoding.ASCII);
var s3 = ZipSharedUtilities.StringFromBuffer(block, block.Length, Encoding.UTF8);
var s4 = ZipSharedUtilities.StringFromBuffer(block, block.Length, Encoding.Default);
var s5 = ZipSharedUtilities.StringFromBuffer(block, block.Length, Encoding.GetEncoding(1252));
if ((ze._BitField & 0x800) == 0x800)
{
ze._FileNameInArchive = ZipSharedUtilities.StringFromBuffer(block, block.Length, Encoding.UTF8);
ze.UseUtf8Encoding = true;
}
else
{
ze._FileNameInArchive = ZipSharedUtilities.StringFromBuffer(block, block.Length, defaultEncoding);
ze._encoding = defaultEncoding;
}
ze._LocalFileName = ze._FileNameInArchive;
if (extraFieldLength > 0)
{
ze._Extra = new byte[extraFieldLength];
n = ze.ArchiveStream.Read(ze._Extra, 0, ze._Extra.Length);
bytesRead += n;
}
if (!ze.FileName.EndsWith("/") && ((ze._BitField & 8) == 8))
{
long posn = ze.ArchiveStream.Position;
bool wantMore = true;
long SizeOfDataRead = 0L;
int tries = 0;
while (wantMore)
{
tries++;
long d = ZipSharedUtilities.FindSignature(ze.ArchiveStream, 0x8074b50);
if (d == -1L)
{
return(false);
}
SizeOfDataRead += d;
block = new byte[12];
n = ze.ArchiveStream.Read(block, 0, block.Length);
if (n != 12)
{
return(false);
}
bytesRead += n;
i = 0;
ze._Crc32 = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
ze._CompressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
ze._UncompressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
if (SizeOfDataRead != ze._CompressedSize)
{
ze.ArchiveStream.Seek(-12L, SeekOrigin.Current);
SizeOfDataRead += 4L;
}
}
ze.ArchiveStream.Seek(posn, SeekOrigin.Begin);
}
ze._CompressedFileDataSize = ze._CompressedSize;
if ((ze._BitField & 1) == 1)
{
throw new NotSupportedException("Encryption is not supported");
}
ze._TotalEntrySize = bytesRead + ze._CompressedFileDataSize;
ze._LengthOfHeader = bytesRead;
return(true);
}
public static ZipDirEntry Read(Stream s, Encoding expectedEncoding)
{
int signature = ZipSharedUtilities.ReadSignature(s);
if (IsNotValidSig(signature))
{
s.Seek(-4L, SeekOrigin.Current);
if (signature != 0x6054b50L)
{
throw new BadReadException(String.Format(" ZipDirEntry::Read(): Bad signature ({0:X8}) at position 0x{1:X8}", signature, s.Position));
}
return(null);
}
byte[] block = new byte[0x2a];
if (s.Read(block, 0, block.Length) != block.Length)
{
return(null);
}
int i = 0;
ZipDirEntry zde = new ZipDirEntry();
short versionMadeBy = (short)(block[i++] + (block[i++] * 0x100));
short versionNeeded = (short)(block[i++] + (block[i++] * 0x100));
short bitField = (short)(block[i++] + (block[i++] * 0x100));
short compressionMethod = (short)(block[i++] + (block[i++] * 0x100));
int lastModDateTime = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
int crc32 = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
int compressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
int uncompressedSize = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
short filenameLength = (short)(block[i++] + (block[i++] * 0x100));
short extraFieldLength = (short)(block[i++] + (block[i++] * 0x100));
short commentLength = (short)(block[i++] + (block[i++] * 0x100));
i += 2;
zde._InternalFileAttrs = (short)(block[i++] + (block[i++] * 0x100));
zde._ExternalFileAttrs = ((block[i++] + (block[i++] * 0x100)) + ((block[i++] * 0x100) * 0x100)) + (((block[i++] * 0x100) * 0x100) * 0x100);
block = new byte[filenameLength];
int n = s.Read(block, 0, block.Length);
if ((bitField & 0x800) == 0x800)
{
zde._FileName = ZipSharedUtilities.Utf8StringFromBuffer(block, block.Length);
}
else
{
zde._FileName = ZipSharedUtilities.StringFromBuffer(block, block.Length, expectedEncoding);
}
if (extraFieldLength > 0)
{
zde._Extra = new byte[extraFieldLength];
n = s.Read(zde._Extra, 0, zde._Extra.Length);
}
if (commentLength > 0)
{
block = new byte[commentLength];
n = s.Read(block, 0, block.Length);
if ((bitField & 0x800) == 0x800)
{
zde._Comment = ZipSharedUtilities.Utf8StringFromBuffer(block, block.Length);
}
else
{
zde._Comment = ZipSharedUtilities.StringFromBuffer(block, block.Length, expectedEncoding);
}
}
return(zde);
}
