internal static Stream CreateDecoderStream(Stream inStream, long startPos, long[] packSizes, CFolder folderInfo, IPasswordProvider pass) { int num2; int num3; if (!folderInfo.CheckStructure()) { throw new NotSupportedException("Unsupported stream binding structure."); } Stream[] packStreams = new Stream[folderInfo.PackStreams.Count]; for (int i = 0; i < folderInfo.PackStreams.Count; i++) { packStreams[i] = new ReadOnlySubStream(inStream, new long?(startPos), packSizes[i]); startPos += packSizes[i]; } Stream[] outStreams = new Stream[folderInfo.UnpackSizes.Count]; FindPrimaryOutStreamIndex(folderInfo, out num2, out num3); return CreateDecoderStream(packStreams, packSizes, outStreams, folderInfo, num2, pass); }
internal static Stream CreateDecoderStream(Stream inStream, long startPos, long[] packSizes, CFolder folderInfo, IPasswordProvider pass) { if (!folderInfo.CheckStructure()) throw new NotSupportedException("Unsupported stream binding structure."); Stream[] inStreams = new Stream[folderInfo.PackStreams.Count]; for (int j = 0; j < folderInfo.PackStreams.Count; j++) { inStreams[j] = new ReadOnlySubStream(inStream, startPos, packSizes[j]); startPos += packSizes[j]; } Stream[] outStreams = new Stream[folderInfo.UnpackSizes.Count]; int primaryCoderIndex, primaryOutStreamIndex; FindPrimaryOutStreamIndex(folderInfo, out primaryCoderIndex, out primaryOutStreamIndex); return CreateDecoderStream(inStreams, packSizes, outStreams, folderInfo, primaryCoderIndex, pass); }
protected Stream GetCryptoStream(Stream plainStream) { if ((Header.CompressedSize == 0) #if !PORTABLE && !NETFX_CORE && ((Header.PkwareTraditionalEncryptionData != null) || (Header.WinzipAesEncryptionData != null))) #else && (Header.PkwareTraditionalEncryptionData != null)) #endif { throw new NotSupportedException("Cannot encrypt file with unknown size at start."); } if ((Header.CompressedSize == 0) && FlagUtility.HasFlag(Header.Flags, HeaderFlags.UsePostDataDescriptor)) { plainStream = new NonDisposingStream(plainStream); //make sure AES doesn't close } else { plainStream = new ReadOnlySubStream(plainStream, Header.CompressedSize); //make sure AES doesn't close } if (Header.PkwareTraditionalEncryptionData != null) { return new PkwareTraditionalCryptoStream(plainStream, Header.PkwareTraditionalEncryptionData, CryptoMode.Decrypt); } #if !PORTABLE && !NETFX_CORE if (Header.WinzipAesEncryptionData != null) { //only read 10 less because the last ten are auth bytes return new WinzipAesCryptoStream(plainStream, Header.WinzipAesEncryptionData, Header.CompressedSize - 10); } #endif return plainStream; }
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()); } } }
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 ReadNextHeader(Stream stream) { FileHeader header4; RarCryptoBinaryReader reader = new RarCryptoBinaryReader(stream, this.Password); if (this.IsEncrypted) { if (this.Password == null) { throw new CryptographicException("Encrypted Rar archive has no password specified."); } reader.SkipQueue(); byte[] salt = reader.ReadBytes(8); reader.InitializeAes(salt); } RarHeader header = RarHeader.Create(reader); if (header == null) { return null; } switch (header.HeaderType) { case HeaderType.MarkHeader: return header.PromoteHeader<MarkHeader>(reader); case HeaderType.ArchiveHeader: { ArchiveHeader header2 = header.PromoteHeader<ArchiveHeader>(reader); this.IsEncrypted = header2.HasPassword; return header2; } case HeaderType.FileHeader: header4 = header.PromoteHeader<FileHeader>(reader); switch (this.StreamingMode) { case SharpCompress.IO.StreamingMode.Streaming: { ReadOnlySubStream actualStream = new ReadOnlySubStream(reader.BaseStream, header4.CompressedSize); if (header4.Salt == null) { header4.PackedStream = actualStream; return header4; } header4.PackedStream = new RarCryptoWrapper(actualStream, this.Password, header4.Salt); return header4; } case SharpCompress.IO.StreamingMode.Seekable: { header4.DataStartPosition = reader.BaseStream.Position; Stream baseStream = reader.BaseStream; baseStream.Position += header4.CompressedSize; return header4; } } throw new InvalidFormatException("Invalid StreamingMode"); case HeaderType.ProtectHeader: { ProtectHeader header3 = header.PromoteHeader<ProtectHeader>(reader); switch (this.StreamingMode) { case SharpCompress.IO.StreamingMode.Streaming: Utility.Skip(reader.BaseStream, (long) header3.DataSize); return header3; case SharpCompress.IO.StreamingMode.Seekable: { Stream stream1 = reader.BaseStream; stream1.Position += header3.DataSize; return header3; } } throw new InvalidFormatException("Invalid StreamingMode"); } case HeaderType.NewSubHeader: header4 = header.PromoteHeader<FileHeader>(reader); switch (this.StreamingMode) { case SharpCompress.IO.StreamingMode.Streaming: Utility.Skip(reader.BaseStream, header4.CompressedSize); return header4; case SharpCompress.IO.StreamingMode.Seekable: { header4.DataStartPosition = reader.BaseStream.Position; Stream stream3 = reader.BaseStream; stream3.Position += header4.CompressedSize; return header4; } } throw new InvalidFormatException("Invalid StreamingMode"); case HeaderType.EndArchiveHeader: return header.PromoteHeader<EndArchiveHeader>(reader); } throw new InvalidFormatException("Invalid Rar Header: " + header.HeaderType.ToString()); }
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()); } } }