protected override void ReadFromReader(MarkingBinaryReader reader)
{
Version = reader.ReadByte();
RecSectors = reader.ReadUInt16();
TotalBlocks = reader.ReadUInt32();
Mark = reader.ReadBytes(8);
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
UnpSize = reader.ReadInt16();
UnpVersion = reader.ReadByte();
UnpMethod = reader.ReadByte();
CommCRC = reader.ReadInt16();
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
UnpackVersion = reader.ReadByte();
Method = reader.ReadByte();
AVVersion = reader.ReadByte();
AVInfoCRC = reader.ReadInt32();
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
HighPosAv = reader.ReadInt16();
PosAv = reader.ReadInt32();
if (ArchiveHeaderFlags.HasFlag(ArchiveFlags.ENCRYPTVER))
{
EncryptionVersion = reader.ReadByte();
}
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
if (EndArchiveFlags_HasFlag( EndArchiveFlags.EARC_DATACRC))
{
ArchiveCRC = reader.ReadInt32();
}
if (EndArchiveFlags_HasFlag(EndArchiveFlags.EARC_VOLNUMBER))
{
VolumeNumber = reader.ReadInt16();
}
}
internal override void Read(MarkingBinaryReader reader)
{
VolumeNumber = reader.ReadUInt16();
FirstVolumeWithDirectory = reader.ReadUInt16();
TotalNumberOfEntriesInDisk = reader.ReadUInt16();
TotalNumberOfEntries = reader.ReadUInt16();
DirectorySize = reader.ReadUInt32();
DirectoryStartOffsetRelativeToDisk = reader.ReadUInt32();
CommentLength = reader.ReadUInt16();
Comment = reader.ReadBytes(CommentLength);
}
internal static IEnumerable<ZipHeader> ReadHeaderNonseekable(Stream stream)
{
while (true)
{
ZipHeader header = null;
try
{
MarkingBinaryReader reader = new MarkingBinaryReader(stream);
uint headerBytes = reader.ReadUInt32();
switch (headerBytes)
{
case ENTRY_HEADER_BYTES:
{
var entry = new LocalEntryHeader();
entry.Read(reader);
if (entry.CompressedSize > 0)
{
entry.PackedStream = new ReadOnlySubStream(stream, entry.CompressedSize, true);
}
header = entry;
}
break;
case DIRECTORY_START_HEADER_BYTES:
{
var entry = new DirectoryEntryHeader();
entry.Read(reader);
header = entry;
}
break;
case POST_DATA_DESCRIPTOR:
case DIGITAL_SIGNATURE:
break;
case DIRECTORY_END_HEADER_BYTES:
{
var entry = new DirectoryEndHeader();
entry.Read(reader);
header = entry;
}
break;
case ZIP64_END_OF_CENTRAL_DIRECTORY:
default:
break;
}
}
catch
{
header = null;
}
yield return header;
}
}
internal override void Read(MarkingBinaryReader reader)
{
Version = reader.ReadUInt16();
Flags = reader.ReadUInt16();
CompressionMethod = reader.ReadUInt16();
LastModifiedTime = reader.ReadUInt16();
LastModifiedDate = reader.ReadUInt16();
Crc = reader.ReadUInt32();
CompressedSize = reader.ReadUInt32();
UncompressedSize = reader.ReadUInt32();
ushort nameLength = reader.ReadUInt16();
ushort extraLength = reader.ReadUInt16();
byte[] name = reader.ReadBytes(nameLength);
Extra = reader.ReadBytes(extraLength);
Name = DefaultEncoding.GetString(name, 0, name.Length);
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
CreationTime = reader.ReadInt32();
ArcNameSize = reader.ReadInt16();
UserNameSize = reader.ReadInt16();
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
}
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());
}
}
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
uint lowUncompressedSize = reader.ReadUInt32();
HostOS = (HostOS)reader.ReadByte();
FileCRC = reader.ReadUInt32();
FileLastModifiedTime = Utility.DosDateToDateTime(reader.ReadInt32());
RarVersion = reader.ReadByte();
PackingMethod = reader.ReadByte();
short nameSize = reader.ReadInt16();
FileAttributes = reader.ReadInt32();
uint highCompressedSize = 0;
uint highUncompressedkSize = 0;
if (FileFlags.HasFlag(FileFlags.LARGE))
{
highCompressedSize = reader.ReadUInt32();
highUncompressedkSize = reader.ReadUInt32();
}
else
{
if (lowUncompressedSize == 0xffffffff)
{
lowUncompressedSize = 0xffffffff;
highUncompressedkSize = int.MaxValue;
}
}
CompressedSize = UInt32To64(highCompressedSize, AdditionalSize);
UncompressedSize = UInt32To64(highUncompressedkSize, lowUncompressedSize);
nameSize = nameSize > 4 * 1024 ? (short)(4 * 1024) : nameSize;
byte[] fileNameBytes = reader.ReadBytes(nameSize);
switch (HeaderType)
{
case HeaderType.FileHeader:
{
if (FileFlags.HasFlag(FileFlags.UNICODE))
{
int length = 0;
while (length < fileNameBytes.Length
&& fileNameBytes[length] != 0)
{
length++;
}
if (length != nameSize)
{
length++;
FileName = FileNameDecoder.Decode(fileNameBytes, length);
}
else
{
FileName = DecodeDefault(fileNameBytes);
}
}
else
{
FileName = DecodeDefault(fileNameBytes);
}
FileName = ConvertPath(FileName, HostOS);
}
break;
case HeaderType.NewSubHeader:
{
int datasize = HeaderSize - NEWLHD_SIZE - nameSize;
if (FileFlags.HasFlag(FileFlags.SALT))
{
datasize -= SALT_SIZE;
}
if (datasize > 0)
{
SubData = reader.ReadBytes(datasize);
}
if (NewSubHeaderType.SUBHEAD_TYPE_RR.Equals(fileNameBytes))
{
RecoverySectors = SubData[8] + (SubData[9] << 8)
+ (SubData[10] << 16) + (SubData[11] << 24);
}
}
break;
}
if (FileFlags.HasFlag(FileFlags.SALT))
{
Salt = reader.ReadBytes(SALT_SIZE);
}
if (FileFlags.HasFlag(FileFlags.EXTTIME))
{
// verify that the end of the header hasn't been reached before reading the Extended Time.
// some tools incorrectly omit Extended Time despite specifying FileFlags.EXTTIME, which most parsers tolerate.
if (ReadBytes + reader.CurrentReadByteCount <= HeaderSize - 2)
{
ushort extendedFlags = reader.ReadUInt16();
FileLastModifiedTime = ProcessExtendedTime(extendedFlags, FileLastModifiedTime, reader, 0);
FileCreatedTime = ProcessExtendedTime(extendedFlags, null, reader, 1);
FileLastAccessedTime = ProcessExtendedTime(extendedFlags, null, reader, 2);
FileArchivedTime = ProcessExtendedTime(extendedFlags, null, reader, 3);
}
}
}
private static DateTime? ProcessExtendedTime(ushort extendedFlags, DateTime? time, MarkingBinaryReader reader, int i)
{
uint num = (uint) (extendedFlags >> ((3 - i) * 4));
if ((num & 8) == 0)
{
return null;
}
if (i != 0)
{
uint iTime = reader.ReadUInt32();
time = new DateTime?(Utility.DosDateToDateTime(iTime));
}
if ((num & 4) == 0)
{
time = new DateTime?(time.Value.AddSeconds(1.0));
}
uint num3 = 0;
int num4 = ((int) num) & 3;
for (int j = 0; j < num4; j++)
{
byte num6 = reader.ReadByte();
num3 |= (uint) (num6 << (((j + 3) - num4) * 8));
}
return new DateTime?(time.Value.AddMilliseconds(num3 * Math.Pow(10.0, -4.0)));
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
uint y = reader.ReadUInt32();
this.HostOS = (SharpCompress.Common.Rar.Headers.HostOS) reader.ReadByte();
this.FileCRC = reader.ReadUInt32();
this.FileLastModifiedTime = new DateTime?(Utility.DosDateToDateTime(reader.ReadInt32()));
this.RarVersion = reader.ReadByte();
this.PackingMethod = reader.ReadByte();
short count = reader.ReadInt16();
this.FileAttributes = reader.ReadInt32();
uint x = 0;
uint num4 = 0;
if (this.FileFlags_HasFlag(SharpCompress.Common.Rar.Headers.FileFlags.LARGE))
{
x = reader.ReadUInt32();
num4 = reader.ReadUInt32();
}
else if (y == uint.MaxValue)
{
y = uint.MaxValue;
num4 = 0x7fffffff;
}
this.CompressedSize = this.UInt32To64(x, base.AdditionalSize);
this.UncompressedSize = this.UInt32To64(num4, y);
count = (count > 0x1000) ? ((short) 0x1000) : count;
byte[] name = reader.ReadBytes(count);
switch (base.HeaderType)
{
case HeaderType.FileHeader:
if (this.FileFlags_HasFlag(SharpCompress.Common.Rar.Headers.FileFlags.UNICODE))
{
int index = 0;
while ((index < name.Length) && (name[index] != 0))
{
index++;
}
if (index != count)
{
index++;
this.FileName = FileNameDecoder.Decode(name, index);
}
else
{
this.FileName = this.DecodeDefault(name);
}
}
else
{
this.FileName = this.DecodeDefault(name);
}
this.FileName = ConvertPath(this.FileName, this.HostOS);
break;
case HeaderType.NewSubHeader:
{
int num6 = (base.HeaderSize - 0x20) - count;
if (this.FileFlags_HasFlag(SharpCompress.Common.Rar.Headers.FileFlags.SALT))
{
num6 -= 8;
}
if (num6 > 0)
{
this.SubData = reader.ReadBytes(num6);
}
if (NewSubHeaderType.SUBHEAD_TYPE_RR.Equals(name))
{
this.RecoverySectors = ((this.SubData[8] + (this.SubData[9] << 8)) + (this.SubData[10] << 0x10)) + (this.SubData[11] << 0x18);
}
break;
}
}
if (this.FileFlags_HasFlag(SharpCompress.Common.Rar.Headers.FileFlags.SALT))
{
this.Salt = reader.ReadBytes(8);
}
if (this.FileFlags_HasFlag(SharpCompress.Common.Rar.Headers.FileFlags.EXTTIME) && ((base.ReadBytes + reader.CurrentReadByteCount) <= (base.HeaderSize - 2)))
{
ushort extendedFlags = reader.ReadUInt16();
this.FileLastModifiedTime = ProcessExtendedTime(extendedFlags, this.FileLastModifiedTime, reader, 0);
DateTime? time = null;
this.FileCreatedTime = ProcessExtendedTime(extendedFlags, time, reader, 1);
time = null;
this.FileLastAccessedTime = ProcessExtendedTime(extendedFlags, time, reader, 2);
this.FileArchivedTime = ProcessExtendedTime(extendedFlags, null, reader, 3);
}
}
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 abstract void Read(MarkingBinaryReader reader);
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 static DateTime? ProcessExtendedTime(ushort extendedFlags, DateTime? time, MarkingBinaryReader reader,
int i)
{
uint rmode = (uint)extendedFlags >> (3 - i) * 4;
if ((rmode & 8) == 0)
{
return null;
}
if (i != 0)
{
uint DosTime = reader.ReadUInt32();
time = Utility.DosDateToDateTime(DosTime);
}
if ((rmode & 4) == 0)
{
time = time.Value.AddSeconds(1);
}
uint nanosecondHundreds = 0;
int count = (int)rmode & 3;
for (int j = 0; j < count; j++)
{
byte b = reader.ReadByte();
nanosecondHundreds |= (((uint)b) << ((j + 3 - count) * 8));
}
//10^-7 to 10^-3
return time.Value.AddMilliseconds(nanosecondHundreds * Math.Pow(10, -4));
}
internal override void Read(MarkingBinaryReader reader)
{
Version = reader.ReadUInt16();
VersionNeededToExtract = reader.ReadUInt16();
Flags = reader.ReadUInt16();
CompressionMethod = reader.ReadUInt16();
LastModifiedTime = reader.ReadUInt16();
LastModifiedDate = reader.ReadUInt16();
Crc = reader.ReadUInt32();
CompressedSize = reader.ReadUInt32();
UncompressedSize = reader.ReadUInt32();
ushort nameLength = reader.ReadUInt16();
ushort extraLength = reader.ReadUInt16();
ushort commentLength = reader.ReadUInt16();
DiskNumberStart = reader.ReadUInt16();
InternalFileAttributes = reader.ReadUInt16();
ExternalFileAttributes = reader.ReadUInt32();
RelativeOffsetOfEntryHeader = reader.ReadUInt32();
Name = DefaultEncoding.GetString(reader.ReadBytes(nameLength));
Extra = reader.ReadBytes(extraLength);
Comment = reader.ReadBytes(commentLength);
}
