protected override void ReadFinish(MarkingBinaryReader reader)
{
var cryptVersion = reader.ReadRarVIntUInt32();
if (cryptVersion > CRYPT_VERSION)
{
//error?
return;
}
var encryptionFlags = reader.ReadRarVIntUInt32();
_usePswCheck = FlagUtility.HasFlag(encryptionFlags, EncryptionFlagsV5.CHFL_CRYPT_PSWCHECK);
_lg2Count = reader.ReadRarVIntByte(1);
//UsePswCheck = HasHeaderFlag(EncryptionFlagsV5.CHFL_CRYPT_PSWCHECK);
if (_lg2Count > CRYPT5_KDF_LG2_COUNT_MAX)
{
//error?
return;
}
_salt = reader.ReadBytes(SIZE_SALT50);
if (_usePswCheck)
{
_pswCheck = reader.ReadBytes(SIZE_PSWCHECK);
_pswCheckCsm = reader.ReadBytes(SIZE_PSWCHECK_CSUM);
}
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
EncriptionVersion = reader.ReadVInt();
EncriptionFlags = reader.ReadVInt();
KdfCount = reader.ReadByte();
Salt = reader.ReadBytes(16);
if (PasswordCheckDataIsPresent)
{
CheckValue = reader.ReadBytes(12);
}
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
Version = reader.ReadByte();
RecSectors = reader.ReadUInt16();
TotalBlocks = reader.ReadUInt32();
Mark = reader.ReadBytes(8);
}
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);
}
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 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);
}
internal T PromoteHeader <T>(MarkingBinaryReader reader) where T : RarHeader, new()
{
T local = Activator.CreateInstance <T>();
local.FillBase(this);
reader.Mark();
local.ReadFromReader(reader);
local.ReadBytes += reader.CurrentReadByteCount;
int count = local.HeaderSize - ((int)local.ReadBytes);
if (count > 0)
{
reader.ReadBytes(count);
}
return(local);
}
internal T PromoteHeader <T>(MarkingBinaryReader reader)
where T : RarHeader, new()
{
T header = new T();
header.FillBase(this);
reader.Mark();
header.ReadFromReader(reader);
header.ReadBytes += reader.CurrentReadByteCount;
int headerSizeDiff = header.HeaderSize - (int)header.ReadBytes;
if (headerSizeDiff > 0)
{
reader.ReadBytes(headerSizeDiff);
}
return(header);
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
uint lowUncompressedSize = reader.ReadUInt32();
HostOS = (HostOS)(int)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))
{
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);
}
}
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 void ReadFromReaderV5(MarkingBinaryReader reader)
{
Flags = reader.ReadRarVIntUInt16();
var lvalue = checked ((long)reader.ReadRarVInt());
// long.MaxValue causes the unpack code to finish when the input stream is exhausted
UncompressedSize = HasFlag(FileFlagsV5.UNPACKED_SIZE_UNKNOWN) ? long.MaxValue : lvalue;
FileAttributes = reader.ReadRarVIntUInt32();
if (HasFlag(FileFlagsV5.HAS_MOD_TIME))
{
FileLastModifiedTime = Utility.UnixTimeToDateTime(reader.ReadUInt32());
}
if (HasFlag(FileFlagsV5.HAS_CRC32))
{
FileCrc = reader.ReadUInt32();
}
var compressionInfo = reader.ReadRarVIntUInt16();
// Lower 6 bits (0x003f mask) contain the version of compression algorithm, resulting in possible 0 - 63 values. Current version is 0.
// "+ 50" to not mix with old RAR format algorithms. For example,
// we may need to use the compression algorithm 15 in the future,
// but it was already used in RAR 1.5 and Unpack needs to distinguish
// them.
CompressionAlgorithm = (byte)((compressionInfo & 0x3f) + 50);
// 7th bit (0x0040) defines the solid flag. If it is set, RAR continues to use the compression dictionary left after processing preceding files.
// It can be set only for file headers and is never set for service headers.
IsSolid = (compressionInfo & 0x40) == 0x40;
// Bits 8 - 10 (0x0380 mask) define the compression method. Currently only values 0 - 5 are used. 0 means no compression.
CompressionMethod = (byte)((compressionInfo >> 7) & 0x7);
// Bits 11 - 14 (0x3c00) define the minimum size of dictionary size required to extract data. Value 0 means 128 KB, 1 - 256 KB, ..., 14 - 2048 MB, 15 - 4096 MB.
WindowSize = IsDirectory ? 0 : ((size_t)0x20000) << ((compressionInfo >> 10) & 0xf);
HostOs = reader.ReadRarVIntByte();
var nameSize = reader.ReadRarVIntUInt16();
// Variable length field containing Name length bytes in UTF-8 format without trailing zero.
// For file header this is a name of archived file. Forward slash character is used as the path separator both for Unix and Windows names.
// Backslashes are treated as a part of name for Unix names and as invalid character for Windows file names. Type of name is defined by Host OS field.
//
// TODO: not sure if anything needs to be done to handle the following:
// If Unix file name contains any high ASCII characters which cannot be correctly converted to Unicode and UTF-8
// we map such characters to to 0xE080 - 0xE0FF private use Unicode area and insert 0xFFFE Unicode non-character
// to resulting string to indicate that it contains mapped characters, which need to be converted back when extracting.
// Concrete position of 0xFFFE is not defined, we need to search the entire string for it. Such mapped names are not
// portable and can be correctly unpacked only on the same system where they were created.
//
// For service header this field contains a name of service header. Now the following names are used:
// CMT Archive comment
// QO Archive quick open data
// ACL NTFS file permissions
// STM NTFS alternate data stream
// RR Recovery record
var b = reader.ReadBytes(nameSize);
FileName = ConvertPathV5(Encoding.UTF8.GetString(b, 0, b.Length));
// extra size seems to be redudant since we know the total header size
if (ExtraSize != RemainingHeaderBytes(reader))
{
throw new InvalidFormatException("rar5 header size / extra size inconsistency");
}
isEncryptedRar5 = false;
while (RemainingHeaderBytes(reader) > 0)
{
var size = reader.ReadRarVIntUInt16();
int n = RemainingHeaderBytes(reader);
var type = reader.ReadRarVIntUInt16();
switch (type)
{
//TODO
case 1: // file encryption
{
isEncryptedRar5 = true;
//var version = reader.ReadRarVIntByte();
//if (version != 0) throw new InvalidFormatException("unknown encryption algorithm " + version);
}
break;
// case 2: // file hash
// {
//
// }
// break;
case 3: // file time
{
ushort flags = reader.ReadRarVIntUInt16();
var isWindowsTime = (flags & 1) == 0;
if ((flags & 0x2) == 0x2)
{
FileLastModifiedTime = ReadExtendedTimeV5(reader, isWindowsTime);
}
if ((flags & 0x4) == 0x4)
{
FileCreatedTime = ReadExtendedTimeV5(reader, isWindowsTime);
}
if ((flags & 0x8) == 0x8)
{
FileLastAccessedTime = ReadExtendedTimeV5(reader, isWindowsTime);
}
}
break;
//TODO
// case 4: // file version
// {
//
// }
// break;
// case 5: // file system redirection
// {
//
// }
// break;
// case 6: // unix owner
// {
//
// }
// break;
// case 7: // service data
// {
//
// }
// break;
default:
// skip unknown record types to allow new record types to be added in the future
break;
}
// drain any trailing bytes of extra record
int did = n - RemainingHeaderBytes(reader);
int drain = size - did;
if (drain > 0)
{
reader.ReadBytes(drain);
}
}
if (AdditionalDataSize != 0)
{
CompressedSize = AdditionalDataSize;
}
}
private void ReadFromReaderV4(MarkingBinaryReader reader)
{
Flags = HeaderFlags;
IsSolid = HasFlag(FileFlagsV4.SOLID);
WindowSize = IsDirectory ? 0U : ((size_t)0x10000) << ((Flags & FileFlagsV4.WINDOW_MASK) >> 5);
uint lowUncompressedSize = reader.ReadUInt32();
HostOs = reader.ReadByte();
FileCrc = reader.ReadUInt32();
FileLastModifiedTime = Utility.DosDateToDateTime(reader.ReadUInt32());
CompressionAlgorithm = reader.ReadByte();
CompressionMethod = (byte)(reader.ReadByte() - 0x30);
short nameSize = reader.ReadInt16();
FileAttributes = reader.ReadUInt32();
uint highCompressedSize = 0;
uint highUncompressedkSize = 0;
if (HasFlag(FileFlagsV4.LARGE))
{
highCompressedSize = reader.ReadUInt32();
highUncompressedkSize = reader.ReadUInt32();
}
else
{
if (lowUncompressedSize == 0xffffffff)
{
lowUncompressedSize = 0xffffffff;
highUncompressedkSize = int.MaxValue;
}
}
CompressedSize = UInt32To64(highCompressedSize, checked ((uint)AdditionalDataSize));
UncompressedSize = UInt32To64(highUncompressedkSize, lowUncompressedSize);
nameSize = nameSize > 4 * 1024 ? (short)(4 * 1024) : nameSize;
byte[] fileNameBytes = reader.ReadBytes(nameSize);
const int saltSize = 8;
const int newLhdSize = 32;
switch (HeaderCode)
{
case HeaderCodeV.RAR4_FILE_HEADER:
{
if (HasFlag(FileFlagsV4.UNICODE))
{
int length = 0;
while (length < fileNameBytes.Length &&
fileNameBytes[length] != 0)
{
length++;
}
if (length != nameSize)
{
length++;
FileName = FileNameDecoder.Decode(fileNameBytes, length);
}
else
{
FileName = ArchiveEncoding.Decode(fileNameBytes);
}
}
else
{
FileName = ArchiveEncoding.Decode(fileNameBytes);
}
FileName = ConvertPathV4(FileName);
}
break;
case HeaderCodeV.RAR4_NEW_SUB_HEADER:
{
int datasize = HeaderSize - newLhdSize - nameSize;
if (HasFlag(FileFlagsV4.SALT))
{
datasize -= saltSize;
}
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 (HasFlag(FileFlagsV4.SALT))
{
R4Salt = reader.ReadBytes(saltSize);
}
if (HasFlag(FileFlagsV4.EXT_TIME))
{
// 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 (RemainingHeaderBytes(reader) >= 2)
{
ushort extendedFlags = reader.ReadUInt16();
FileLastModifiedTime = ProcessExtendedTimeV4(extendedFlags, FileLastModifiedTime, reader, 0);
FileCreatedTime = ProcessExtendedTimeV4(extendedFlags, null, reader, 1);
FileLastAccessedTime = ProcessExtendedTimeV4(extendedFlags, null, reader, 2);
FileArchivedTime = ProcessExtendedTimeV4(extendedFlags, null, reader, 3);
}
}
}
protected override void ReadFromReader(MarkingBinaryReader reader)
{
FileHeaderFlags = (FileFlags)reader.ReadVInt();
UnpackedSize = reader.ReadVInt();
Attributes = reader.ReadVInt();
if (FileHeaderFlags.HasFlag(FileFlags.TimeFieldIsPresent))
{
MTime = reader.ReadUInt32();
FileLastModifiedTime = Utility.UnixTimeToDateTime(MTime);
}
if (FileHeaderFlags.HasFlag(FileFlags.CRC32IsPresent))
{
DataCRC32 = reader.ReadUInt32();
}
CompressionInformation = reader.ReadVInt();
HostOS = (HostOS)reader.ReadVInt();
var nameSize = (int)reader.ReadVInt();
Name = Encoding.UTF8.GetString(reader.ReadBytes(nameSize));
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 = ArchiveEncoding.Decode(fileNameBytes);
}
}
else
{
FileName = ArchiveEncoding.Decode(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);
}
}
}
