public bool CheckStructure()
{
const int kNumCodersMax = 32; // don't change it
const int kMaskSize = 32; // it must be >= kNumCodersMax
const int kNumBindsMax = 32;
if (Coders.Count > kNumCodersMax || BindPairs.Count > kNumBindsMax)
return false;
{
var v = new BitVector(BindPairs.Count + PackStreams.Count);
for (int i = 0; i < BindPairs.Count; i++)
if (v.GetAndSet(BindPairs[i].InIndex))
return false;
for (int i = 0; i < PackStreams.Count; i++)
if (v.GetAndSet(PackStreams[i]))
return false;
}
{
var v = new BitVector(UnpackSizes.Count);
for (int i = 0; i < BindPairs.Count; i++)
if (v.GetAndSet(BindPairs[i].OutIndex))
return false;
}
uint[] mask = new uint[kMaskSize];
{
List<int> inStreamToCoder = new List<int>();
List<int> outStreamToCoder = new List<int>();
for (int i = 0; i < Coders.Count; i++)
{
CCoderInfo coder = Coders[i];
for (int j = 0; j < coder.NumInStreams; j++)
inStreamToCoder.Add(i);
for (int j = 0; j < coder.NumOutStreams; j++)
outStreamToCoder.Add(i);
}
for (int i = 0; i < BindPairs.Count; i++)
{
CBindPair bp = BindPairs[i];
mask[inStreamToCoder[bp.InIndex]] |= (1u << outStreamToCoder[bp.OutIndex]);
}
}
for (int i = 0; i < kMaskSize; i++)
for (int j = 0; j < kMaskSize; j++)
if (((1u << j) & mask[i]) != 0)
mask[i] |= mask[j];
for (int i = 0; i < kMaskSize; i++)
if (((1u << i) & mask[i]) != 0)
return false;
return true;
}
private void ReadHeader(ArchiveDatabase db, IPasswordProvider getTextPassword)
{
#if DEBUG
Log.WriteLine("-- ReadHeader --");
Log.PushIndent();
#endif
try
{
BlockType? type = ReadId();
if (type == BlockType.ArchiveProperties)
{
ReadArchiveProperties();
type = ReadId();
}
List<byte[]> dataVector = null;
if (type == BlockType.AdditionalStreamsInfo)
{
dataVector = ReadAndDecodePackedStreams(db.StartPositionAfterHeader, getTextPassword);
type = ReadId();
}
List<long> unpackSizes;
List<uint?> digests;
if (type == BlockType.MainStreamsInfo)
{
ReadStreamsInfo(dataVector,
out db.DataStartPosition,
out db.PackSizes,
out db.PackCRCs,
out db.Folders,
out db.NumUnpackStreamsVector,
out unpackSizes,
out digests);
db.DataStartPosition += db.StartPositionAfterHeader;
type = ReadId();
}
else
{
unpackSizes = new List<long>(db.Folders.Count);
digests = new List<uint?>(db.Folders.Count);
db.NumUnpackStreamsVector = new List<int>(db.Folders.Count);
for (int i = 0; i < db.Folders.Count; i++)
{
var folder = db.Folders[i];
unpackSizes.Add(folder.GetUnpackSize());
digests.Add(folder.UnpackCRC);
db.NumUnpackStreamsVector.Add(1);
}
}
db.Files.Clear();
if (type == BlockType.End)
return;
if (type != BlockType.FilesInfo)
throw new InvalidOperationException();
int numFiles = ReadNum();
#if DEBUG
Log.WriteLine("NumFiles: " + numFiles);
#endif
db.Files = new List<CFileItem>(numFiles);
for (int i = 0; i < numFiles; i++)
db.Files.Add(new CFileItem());
BitVector emptyStreamVector = new BitVector(numFiles);
BitVector emptyFileVector = null;
BitVector antiFileVector = null;
int numEmptyStreams = 0;
for (; ; )
{
type = ReadId();
if (type == BlockType.End)
break;
long size = checked((long)ReadNumber()); // TODO: throw invalid data on negative
int oldPos = _currentReader.Offset;
switch (type)
{
case BlockType.Name:
using (var streamSwitch = new CStreamSwitch())
{
streamSwitch.Set(this, dataVector);
#if DEBUG
Log.Write("FileNames:");
#endif
for (int i = 0; i < db.Files.Count; i++)
{
db.Files[i].Name = _currentReader.ReadString();
#if DEBUG
Log.Write(" " + db.Files[i].Name);
#endif
}
#if DEBUG
Log.WriteLine();
#endif
}
break;
case BlockType.WinAttributes:
#if DEBUG
Log.Write("WinAttributes:");
#endif
ReadAttributeVector(dataVector, numFiles, delegate(int i, uint? attr)
{
db.Files[i].Attrib = attr;
#if DEBUG
Log.Write(" " + (attr.HasValue ? attr.Value.ToString("x8") : "n/a"));
#endif
});
#if DEBUG
Log.WriteLine();
#endif
break;
case BlockType.EmptyStream:
emptyStreamVector = ReadBitVector(numFiles);
#if DEBUG
Log.Write("EmptyStream: ");
#endif
for (int i = 0; i < emptyStreamVector.Length; i++)
{
if (emptyStreamVector[i])
{
#if DEBUG
Log.Write("x");
#endif
numEmptyStreams++;
}
else
{
#if DEBUG
Log.Write(".");
#endif
}
}
#if DEBUG
Log.WriteLine();
#endif
emptyFileVector = new BitVector(numEmptyStreams);
antiFileVector = new BitVector(numEmptyStreams);
break;
case BlockType.EmptyFile:
emptyFileVector = ReadBitVector(numEmptyStreams);
#if DEBUG
Log.Write("EmptyFile: ");
for (int i = 0; i < numEmptyStreams; i++)
Log.Write(emptyFileVector[i] ? "x" : ".");
Log.WriteLine();
#endif
break;
case BlockType.Anti:
antiFileVector = ReadBitVector(numEmptyStreams);
#if DEBUG
Log.Write("Anti: ");
for (int i = 0; i < numEmptyStreams; i++)
Log.Write(antiFileVector[i] ? "x" : ".");
Log.WriteLine();
#endif
break;
case BlockType.StartPos:
#if DEBUG
Log.Write("StartPos:");
#endif
ReadNumberVector(dataVector, numFiles, delegate(int i, long? startPos)
{
db.Files[i].StartPos = startPos;
#if DEBUG
Log.Write(" " + (startPos.HasValue ? startPos.Value.ToString() : "n/a"));
#endif
});
#if DEBUG
Log.WriteLine();
#endif
break;
case BlockType.CTime:
#if DEBUG
Log.Write("CTime:");
#endif
ReadDateTimeVector(dataVector, numFiles, delegate(int i, DateTime? time)
{
db.Files[i].CTime = time;
#if DEBUG
Log.Write(" " + (time.HasValue ? time.Value.ToString() : "n/a"));
#endif
});
#if DEBUG
Log.WriteLine();
#endif
break;
case BlockType.ATime:
#if DEBUG
Log.Write("ATime:");
#endif
ReadDateTimeVector(dataVector, numFiles, delegate(int i, DateTime? time)
{
db.Files[i].ATime = time;
#if DEBUG
Log.Write(" " + (time.HasValue ? time.Value.ToString() : "n/a"));
#endif
});
#if DEBUG
Log.WriteLine();
#endif
break;
case BlockType.MTime:
#if DEBUG
Log.Write("MTime:");
#endif
ReadDateTimeVector(dataVector, numFiles, delegate(int i, DateTime? time)
{
db.Files[i].MTime = time;
#if DEBUG
Log.Write(" " + (time.HasValue ? time.Value.ToString() : "n/a"));
#endif
});
#if DEBUG
Log.WriteLine();
#endif
break;
case BlockType.Dummy:
#if DEBUG
Log.Write("Dummy: " + size);
#endif
for (long j = 0; j < size; j++)
if (ReadByte() != 0)
throw new InvalidOperationException();
break;
default:
SkipData(size);
break;
}
// since 0.3 record sizes must be correct
bool checkRecordsSize = (db.MajorVersion > 0 || db.MinorVersion > 2);
if (checkRecordsSize && _currentReader.Offset - oldPos != size)
throw new InvalidOperationException();
}
int emptyFileIndex = 0;
int sizeIndex = 0;
for (int i = 0; i < numFiles; i++)
{
CFileItem file = db.Files[i];
file.HasStream = !emptyStreamVector[i];
if (file.HasStream)
{
file.IsDir = false;
file.IsAnti = false;
file.Size = unpackSizes[sizeIndex];
file.Crc = digests[sizeIndex];
sizeIndex++;
}
else
{
file.IsDir = !emptyFileVector[emptyFileIndex];
file.IsAnti = antiFileVector[emptyFileIndex];
emptyFileIndex++;
file.Size = 0;
file.Crc = null;
}
}
}
finally
{
#if DEBUG
Log.PopIndent();
#endif
}
}
private BitVector ReadBitVector(int length)
{
var bits = new BitVector(length);
byte data = 0;
byte mask = 0;
for (int i = 0; i < length; i++)
{
if (mask == 0)
{
data = ReadByte();
mask = 0x80;
}
if ((data & mask) != 0)
bits.SetBit(i);
mask >>= 1;
}
return bits;
}
public bool CheckStructure()
{
int num;
int num2;
if ((this.Coders.Count > 0x20) || (this.BindPairs.Count > 0x20))
{
return false;
}
BitVector vector = new BitVector(this.BindPairs.Count + this.PackStreams.Count);
for (num = 0; num < this.BindPairs.Count; num++)
{
if (vector.GetAndSet(this.BindPairs[num].InIndex))
{
return false;
}
}
for (num = 0; num < this.PackStreams.Count; num++)
{
if (vector.GetAndSet(this.PackStreams[num]))
{
return false;
}
}
vector = new BitVector(this.UnpackSizes.Count);
for (num = 0; num < this.BindPairs.Count; num++)
{
if (vector.GetAndSet(this.BindPairs[num].OutIndex))
{
return false;
}
}
uint[] numArray = new uint[0x20];
List<int> list = new List<int>();
List<int> list2 = new List<int>();
for (num = 0; num < this.Coders.Count; num++)
{
CCoderInfo info = this.Coders[num];
num2 = 0;
while (num2 < info.NumInStreams)
{
list.Add(num);
num2++;
}
num2 = 0;
while (num2 < info.NumOutStreams)
{
list2.Add(num);
num2++;
}
}
for (num = 0; num < this.BindPairs.Count; num++)
{
CBindPair pair = this.BindPairs[num];
numArray[list[pair.InIndex]] |= ((uint) 1) << list2[pair.OutIndex];
}
for (num = 0; num < 0x20; num++)
{
for (num2 = 0; num2 < 0x20; num2++)
{
if (((((int) 1) << num2) & numArray[num]) != 0)
{
numArray[num] |= numArray[num2];
}
}
}
for (num = 0; num < 0x20; num++)
{
if (((((int) 1) << num) & numArray[num]) != 0)
{
return false;
}
}
return true;
}
private void ReadHeader(ArchiveDatabase db, IPasswordProvider getTextPassword)
{
Action<int, uint?> action = null;
Action<int, long?> action2 = null;
Action<int, DateTime?> action3 = null;
Action<int, DateTime?> action4 = null;
Action<int, DateTime?> action5 = null;
SharpCompress.Compressor.LZMA.Log.WriteLine("-- ReadHeader --");
SharpCompress.Compressor.LZMA.Log.PushIndent(" ");
try
{
List<long> list2;
List<uint?> list3;
int num;
long num6;
int num7;
bool flag2;
BlockType? nullable = this.ReadId();
if (((BlockType) nullable) == BlockType.ArchiveProperties)
{
this.ReadArchiveProperties();
nullable = this.ReadId();
}
List<byte[]> dataVector = null;
if (((BlockType) nullable) == BlockType.AdditionalStreamsInfo)
{
dataVector = this.ReadAndDecodePackedStreams(db.StartPositionAfterHeader, getTextPassword);
nullable = this.ReadId();
}
if (((BlockType) nullable) == BlockType.MainStreamsInfo)
{
this.ReadStreamsInfo(dataVector, out db.DataStartPosition, out db.PackSizes, out db.PackCRCs, out db.Folders, out db.NumUnpackStreamsVector, out list2, out list3);
db.DataStartPosition += db.StartPositionAfterHeader;
nullable = this.ReadId();
}
else
{
list2 = new List<long>(db.Folders.Count);
list3 = new List<uint?>(db.Folders.Count);
db.NumUnpackStreamsVector = new List<int>(db.Folders.Count);
for (num = 0; num < db.Folders.Count; num++)
{
CFolder folder = db.Folders[num];
list2.Add(folder.GetUnpackSize());
list3.Add(folder.UnpackCRC);
db.NumUnpackStreamsVector.Add(1);
}
}
db.Files.Clear();
if (((BlockType) nullable) == BlockType.End)
{
return;
}
if (((BlockType) nullable) != BlockType.FilesInfo)
{
throw new InvalidOperationException();
}
int capacity = this.ReadNum();
SharpCompress.Compressor.LZMA.Log.WriteLine("NumFiles: " + capacity);
db.Files = new List<CFileItem>(capacity);
num = 0;
while (num < capacity)
{
db.Files.Add(new CFileItem());
num++;
}
BitVector vector = new BitVector(capacity);
BitVector vector2 = null;
BitVector vector3 = null;
int length = 0;
goto Label_06FC;
Label_02DA:
nullable = this.ReadId();
if (((BlockType) nullable) == BlockType.End)
{
goto Label_0704;
}
long size = (long) this.ReadNumber();
int offset = this._currentReader.Offset;
BlockType valueOrDefault = nullable.GetValueOrDefault();
if (nullable.HasValue)
{
switch (valueOrDefault)
{
case BlockType.EmptyStream:
vector = this.ReadBitVector(capacity);
SharpCompress.Compressor.LZMA.Log.Write("EmptyStream: ");
num = 0;
goto Label_04AD;
case BlockType.EmptyFile:
vector2 = this.ReadBitVector(length);
SharpCompress.Compressor.LZMA.Log.Write("EmptyFile: ");
num = 0;
goto Label_0519;
case BlockType.Anti:
vector3 = this.ReadBitVector(length);
SharpCompress.Compressor.LZMA.Log.Write("Anti: ");
num = 0;
goto Label_056E;
case BlockType.Name:
goto Label_0370;
case BlockType.CTime:
goto Label_05BC;
case BlockType.ATime:
goto Label_05F3;
case BlockType.MTime:
goto Label_062A;
case BlockType.WinAttributes:
goto Label_0420;
case BlockType.StartPos:
goto Label_0585;
case BlockType.Dummy:
SharpCompress.Compressor.LZMA.Log.Write("Dummy: " + size);
num6 = 0L;
goto Label_0697;
}
}
goto Label_06A5;
Label_0370:
using (CStreamSwitch switch2 = new CStreamSwitch())
{
switch2.Set(this, dataVector);
SharpCompress.Compressor.LZMA.Log.Write("FileNames:");
num = 0;
while (num < db.Files.Count)
{
db.Files[num].Name = this._currentReader.ReadString();
SharpCompress.Compressor.LZMA.Log.Write(" " + db.Files[num].Name);
num++;
}
SharpCompress.Compressor.LZMA.Log.WriteLine();
}
goto Label_06B0;
Label_0420:
SharpCompress.Compressor.LZMA.Log.Write("WinAttributes:");
if (action == null)
{
action = delegate (int i, uint? attr) {
db.Files[i].Attrib = attr;
SharpCompress.Compressor.LZMA.Log.Write(" " + (attr.HasValue ? attr.Value.ToString("x8") : "n/a"));
};
}
this.ReadAttributeVector(dataVector, capacity, action);
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_0471:
if (vector[num])
{
SharpCompress.Compressor.LZMA.Log.Write("x");
length++;
}
else
{
SharpCompress.Compressor.LZMA.Log.Write(".");
}
num++;
Label_04AD:
if (num < vector.Length)
{
goto Label_0471;
}
SharpCompress.Compressor.LZMA.Log.WriteLine();
vector2 = new BitVector(length);
vector3 = new BitVector(length);
goto Label_06B0;
Label_04F5:
SharpCompress.Compressor.LZMA.Log.Write(vector2[num] ? "x" : ".");
num++;
Label_0519:
if (num < length)
{
goto Label_04F5;
}
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_054A:
SharpCompress.Compressor.LZMA.Log.Write(vector3[num] ? "x" : ".");
num++;
Label_056E:
if (num < length)
{
goto Label_054A;
}
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_0585:
SharpCompress.Compressor.LZMA.Log.Write("StartPos:");
if (action2 == null)
{
action2 = delegate (int i, long? startPos) {
db.Files[i].StartPos = startPos;
SharpCompress.Compressor.LZMA.Log.Write(" " + (startPos.HasValue ? startPos.Value.ToString() : "n/a"));
};
}
this.ReadNumberVector(dataVector, capacity, action2);
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_05BC:
SharpCompress.Compressor.LZMA.Log.Write("CTime:");
if (action3 == null)
{
action3 = delegate (int i, DateTime? time) {
db.Files[i].CTime = time;
SharpCompress.Compressor.LZMA.Log.Write(" " + (time.HasValue ? time.Value.ToString() : "n/a"));
};
}
this.ReadDateTimeVector(dataVector, capacity, action3);
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_05F3:
SharpCompress.Compressor.LZMA.Log.Write("ATime:");
if (action4 == null)
{
action4 = delegate (int i, DateTime? time) {
db.Files[i].ATime = time;
SharpCompress.Compressor.LZMA.Log.Write(" " + (time.HasValue ? time.Value.ToString() : "n/a"));
};
}
this.ReadDateTimeVector(dataVector, capacity, action4);
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_062A:
SharpCompress.Compressor.LZMA.Log.Write("MTime:");
if (action5 == null)
{
action5 = delegate (int i, DateTime? time) {
db.Files[i].MTime = time;
SharpCompress.Compressor.LZMA.Log.Write(" " + (time.HasValue ? time.Value.ToString() : "n/a"));
};
}
this.ReadDateTimeVector(dataVector, capacity, action5);
SharpCompress.Compressor.LZMA.Log.WriteLine();
goto Label_06B0;
Label_067B:
if (this.ReadByte() != 0)
{
throw new InvalidOperationException();
}
num6 += 1L;
Label_0697:
if (num6 < size)
{
goto Label_067B;
}
goto Label_06B0;
Label_06A5:
this.SkipData(size);
Label_06B0:
if (((db.MajorVersion > 0) || (db.MinorVersion > 2)) && ((this._currentReader.Offset - offset) != size))
{
throw new InvalidOperationException();
}
Label_06FC:
flag2 = true;
goto Label_02DA;
Label_0704:
num7 = 0;
int num8 = 0;
for (num = 0; num < capacity; num++)
{
CFileItem item = db.Files[num];
item.HasStream = !vector[num];
if (item.HasStream)
{
item.IsDir = false;
item.IsAnti = false;
item.Size = list2[num8];
item.Crc = list3[num8];
num8++;
}
else
{
item.IsDir = !vector2[num7];
item.IsAnti = vector3[num7];
num7++;
item.Size = 0L;
item.Crc = null;
}
}
}
finally
{
SharpCompress.Compressor.LZMA.Log.PopIndent();
}
}
private BitVector ReadBitVector(int length)
{
BitVector vector = new BitVector(length);
byte num = 0;
byte num2 = 0;
for (int i = 0; i < length; i++)
{
if (num2 == 0)
{
num = this.ReadByte();
num2 = 0x80;
}
if ((num & num2) != 0)
{
vector.SetBit(i);
}
num2 = (byte) (num2 >> 1);
}
return vector;
}
