public RarStream(Unpack unpack, FileHeader fileHeader, Stream readStream)
{
this.unpack = unpack;
this.fileHeader = fileHeader;
this.readStream = readStream;
fetch = true;
unpack.doUnpack(fileHeader, readStream, this);
fetch = false;
}
public Unpack(FileHeader fileHeader, Stream readStream, Stream writeStream)
{
base.readStream = readStream;
base.writeStream = writeStream;
this.fileHeader = fileHeader;
window = null;
//externalWindow = false;
suspended = false;
unpAllBuf = false;
unpSomeRead = false;
destUnpSize = fileHeader.UncompressedSize;
init(null);
}
internal FileInfoRarFilePart(FileInfoRarArchiveVolume volume, MarkHeader mh, FileHeader fh, FileInfo fi)
: base(mh, fh, volume.Stream, volume.Password)
{
FileInfo = fi;
}
internal override RarFilePart CreateFilePart(FileHeader fileHeader, MarkHeader markHeader)
{
return new SeekableFilePart(markHeader, fileHeader, Stream, Password);
}
internal NonSeekableStreamFilePart(MarkHeader mh, FileHeader fh, bool streamOwner)
: base(mh, fh, streamOwner)
{
}
internal RarFilePart(MarkHeader mh, FileHeader fh)
{
MarkHeader = mh;
FileHeader = fh;
}
internal abstract RarFilePart CreateFilePart(FileHeader fileHeader, MarkHeader markHeader);
internal override RarFilePart CreateFilePart(FileHeader fileHeader, MarkHeader markHeader)
{
return new NonSeekableStreamFilePart(markHeader, fileHeader);
}
internal RarFilePart(SharpCompress.Common.Rar.Headers.MarkHeader mh, SharpCompress.Common.Rar.Headers.FileHeader fh)
{
this.MarkHeader = mh;
this.FileHeader = fh;
}
private RarHeader ReadNextHeader(Stream stream)
{
#if !NO_CRYPTO
var reader = new RarCryptoBinaryReader(stream, Password);
if (IsEncrypted)
{
if (Password == null)
{
throw new CryptographicException("Encrypted Rar archive has no password specified.");
}
reader.SkipQueue();
byte[] salt = reader.ReadBytes(8);
reader.InitializeAes(salt);
}
#else
var reader = new MarkingBinaryReader(stream);
#endif
RarHeader header = RarHeader.Create(reader);
if (header == null)
{
return(null);
}
switch (header.HeaderType)
{
case HeaderType.ArchiveHeader:
{
var ah = header.PromoteHeader <ArchiveHeader>(reader);
IsEncrypted = ah.HasPassword;
return(ah);
}
case HeaderType.MarkHeader:
{
return(header.PromoteHeader <MarkHeader>(reader));
}
case HeaderType.ProtectHeader:
{
ProtectHeader ph = header.PromoteHeader <ProtectHeader>(reader);
// skip the recovery record data, we do not use it.
switch (StreamingMode)
{
case StreamingMode.Seekable:
{
reader.BaseStream.Position += ph.DataSize;
}
break;
case StreamingMode.Streaming:
{
reader.BaseStream.Skip(ph.DataSize);
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(ph);
}
case HeaderType.NewSubHeader:
{
FileHeader fh = header.PromoteHeader <FileHeader>(reader);
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?
reader.BaseStream.Skip(fh.CompressedSize);
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderType.FileHeader:
{
FileHeader fh = header.PromoteHeader <FileHeader>(reader);
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.Salt == null)
{
fh.PackedStream = ms;
}
else
{
#if !NO_CRYPTO
fh.PackedStream = new RarCryptoWrapper(ms, Password, fh.Salt);
#else
throw new NotSupportedException("RarCrypto not supported");
#endif
}
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderType.EndArchiveHeader:
{
return(header.PromoteHeader <EndArchiveHeader>(reader));
}
default:
{
throw new InvalidFormatException("Invalid Rar Header: " + header.HeaderType.ToString());
}
}
}
private RarHeader TryReadNextHeader(Stream stream)
{
RarCrcBinaryReader reader;
if (!IsEncrypted)
{
reader = new RarCrcBinaryReader(stream);
}
else
{
#if !NO_CRYPTO
if (Options.Password == null)
{
throw new CryptographicException("Encrypted Rar archive has no password specified.");
}
reader = new RarCryptoBinaryReader(stream, Options.Password);
#else
throw new CryptographicException("Rar encryption unsupported on this platform");
#endif
}
var header = RarHeader.TryReadBase(reader, _isRar5, Options.ArchiveEncoding);
if (header == null)
{
return(null);
}
switch (header.HeaderCode)
{
case HeaderCodeV.RAR5_ARCHIVE_HEADER:
case HeaderCodeV.RAR4_ARCHIVE_HEADER:
{
var ah = new ArchiveHeader(header, reader);
if (ah.IsEncrypted == true)
{
//!!! rar5 we don't know yet
IsEncrypted = true;
}
return(ah);
}
case HeaderCodeV.RAR4_PROTECT_HEADER:
{
var ph = new ProtectHeader(header, reader);
// skip the recovery record data, we do not use it.
switch (StreamingMode)
{
case StreamingMode.Seekable:
{
reader.BaseStream.Position += ph.DataSize;
}
break;
case StreamingMode.Streaming:
{
reader.BaseStream.Skip(ph.DataSize);
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(ph);
}
case HeaderCodeV.RAR5_SERVICE_HEADER:
{
var fh = new FileHeader(header, reader, HeaderType.Service);
SkipData(fh, reader);
return(fh);
}
case HeaderCodeV.RAR4_NEW_SUB_HEADER:
{
var fh = new FileHeader(header, reader, HeaderType.NewSub);
SkipData(fh, reader);
return(fh);
}
case HeaderCodeV.RAR5_FILE_HEADER:
case HeaderCodeV.RAR4_FILE_HEADER:
{
var fh = new FileHeader(header, reader, HeaderType.File);
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 == null)
{
fh.PackedStream = ms;
}
else
{
#if !NO_CRYPTO
fh.PackedStream = new RarCryptoWrapper(ms, Options.Password, fh.R4Salt);
#else
throw new NotSupportedException("RarCrypto not supported");
#endif
}
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderCodeV.RAR5_END_ARCHIVE_HEADER:
case HeaderCodeV.RAR4_END_ARCHIVE_HEADER:
{
return(new EndArchiveHeader(header, reader));
}
case HeaderCodeV.RAR5_ARCHIVE_ENCRYPTION_HEADER:
{
var ch = new ArchiveCryptHeader(header, reader);
IsEncrypted = true;
return(ch);
}
default:
{
throw new InvalidFormatException("Unknown Rar Header: " + header.HeaderCode);
}
}
}
public void doUnpack(FileHeader fileHeader, Stream readStream, Stream writeStream)
{
base.destUnpSize = fileHeader.UncompressedSize;
this.fileHeader = fileHeader;
base.writeStream = writeStream;
base.readStream = readStream;
if (!FlagUtility.HasFlag<FileFlags>(fileHeader.FileFlags, FileFlags.SOLID))
{
this.init(null);
}
base.suspended = false;
this.doUnpack();
}
internal FileInfoRarFilePart(MarkHeader mh, FileHeader fh, FileInfo fi)
: base(mh, fh, true)
{
FileInfo = fi;
}
private RarHeader ReadNextHeader(Stream stream)
{
#if PORTABLE
var reader = new MarkingBinaryReader(stream);
#else
var reader = new RarCryptoBinaryReader(stream, Password);
if (IsEncrypted)
{
reader.SkipQueue();
byte[] salt = reader.ReadBytes(8);
reader.InitializeAes(salt);
}
#endif
RarHeader header = RarHeader.Create(reader);
if (header == null)
{
return(null);
}
switch (header.HeaderType)
{
case HeaderType.ArchiveHeader:
{
var ah = header.PromoteHeader <ArchiveHeader>(reader);
IsEncrypted = ah.HasPassword;
return(ah);
}
case HeaderType.MarkHeader:
{
return(header.PromoteHeader <MarkHeader>(reader));
}
case HeaderType.NewSubHeader:
{
FileHeader fh = header.PromoteHeader <FileHeader>(reader);
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?
reader.BaseStream.Skip(fh.CompressedSize);
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderType.FileHeader:
{
FileHeader fh = header.PromoteHeader <FileHeader>(reader);
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.Salt == null)
{
fh.PackedStream = ms;
}
else
{
#if PORTABLE
throw new NotSupportedException("Encrypted Rar files aren't supported in portable distro.");
#else
fh.PackedStream = new RarCryptoWrapper(ms, Password, fh.Salt);
#endif
}
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderType.EndArchiveHeader:
{
return(header.PromoteHeader <EndArchiveHeader>(reader));
}
default:
{
throw new InvalidFormatException("Invalid Rar Header: " + header.HeaderType.ToString());
}
}
}
internal SeekableFilePart(MarkHeader mh, FileHeader fh, Stream stream, string password)
: base(mh, fh)
{
this.stream = stream;
this.password = password;
}
internal RarFilePart(MarkHeader mh, FileHeader fh, bool streamOwner)
{
MarkHeader = mh;
FileHeader = fh;
StreamOwner = streamOwner;
}
internal NonSeekableStreamFilePart(MarkHeader mh, FileHeader fh)
: base(mh, fh)
{
}
internal FileInfoRarFilePart(FileInfoRarArchiveVolume volume, MarkHeader mh, FileHeader fh, System.IO.FileInfo fi)
: base(mh, fh, volume.Stream, volume.Password)
{
this.volume = volume;
this.FileInfo = fi;
}
public void doUnpack(FileHeader fileHeader, Stream readStream, Stream writeStream)
{
destUnpSize = fileHeader.UncompressedSize;
this.fileHeader = fileHeader;
base.writeStream = writeStream;
base.readStream = readStream;
bool solid = FlagUtility.HasFlag(fileHeader.FileFlags, FileFlags.SOLID);
if (!solid)
{
init(null);
}
suspended = false;
doUnpack();
}
internal override RarFilePart CreateFilePart(FileHeader fileHeader, MarkHeader markHeader)
{
return new FileInfoRarFilePart(this, markHeader, fileHeader, FileInfo);
}
internal FileInfoRarFilePart(FileInfoRarArchiveVolume volume, MarkHeader mh, FileHeader fh, FileInfo fi)
: base(mh, fh)
{
this.volume = volume;
FileInfo = fi;
}
internal SeekableStreamFilePart(MarkHeader mh, FileHeader fh, Stream stream, bool streamOwner)
: base(mh, fh, streamOwner)
{
Stream = stream;
}
internal SeekableStreamFilePart(MarkHeader mh, FileHeader fh, Stream stream)
: base(mh, fh)
{
Stream = stream;
}
private RarHeader ReadNextHeader(Stream stream)
{
MarkingBinaryReader reader = new MarkingBinaryReader(stream);
RarHeader header = RarHeader.Create(reader);
if (header == null)
{
return(null);
}
switch (header.HeaderType)
{
case HeaderType.ArchiveHeader:
{
return(header.PromoteHeader <ArchiveHeader>(reader));
}
case HeaderType.MarkHeader:
{
return(header.PromoteHeader <MarkHeader>(reader));
}
case HeaderType.NewSubHeader:
{
FileHeader fh = header.PromoteHeader <FileHeader>(reader);
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?
reader.BaseStream.Skip(fh.CompressedSize);
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderType.FileHeader:
{
FileHeader fh = header.PromoteHeader <FileHeader>(reader);
switch (StreamingMode)
{
case StreamingMode.Seekable:
{
fh.DataStartPosition = reader.BaseStream.Position;
reader.BaseStream.Position += fh.CompressedSize;
}
break;
case StreamingMode.Streaming:
{
ReadOnlySubStream ms
= new ReadOnlySubStream(reader.BaseStream, fh.CompressedSize);
fh.PackedStream = ms;
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
return(fh);
}
case HeaderType.EndArchiveHeader:
{
return(header.PromoteHeader <EndArchiveHeader>(reader));
}
default:
{
throw new InvalidFormatException("Invalid Rar Header: " + header.HeaderType.ToString());
}
}
}
