protected Stream GetLocalDataStreamInternal(IndexEntry idxInfo, MD5Hash key)
{
if (idxInfo == null)
{
throw new Exception("local index missing");
}
Stream dataStream = GetDataStream(idxInfo.Index);
dataStream.Position = idxInfo.Offset;
using (BinaryReader reader = new BinaryReader(dataStream, Encoding.ASCII, true))
{
byte[] md5 = reader.ReadBytes(16);
Array.Reverse(md5);
if (!key.EqualsTo(md5))
{
throw new Exception("local data corrupted");
}
int size = reader.ReadInt32();
if (size != idxInfo.Size)
{
throw new Exception("local data corrupted");
}
//byte[] unkData1 = reader.ReadBytes(2);
//byte[] unkData2 = reader.ReadBytes(8);
dataStream.Position += 10;
byte[] data = reader.ReadBytes(idxInfo.Size - 30);
return(new MemoryStream(data));
}
}
private void Parse(MD5Hash md5)
{
int size = (int)_reader.BaseStream.Length;
if (size < 8)
{
throw new BLTEDecoderException("not enough data: {0}", 8);
}
int magic = _reader.ReadInt32();
if (magic != BLTE_MAGIC)
{
throw new BLTEDecoderException("frame header mismatch (bad BLTE file)");
}
int headerSize = _reader.ReadInt32BE();
if (CASCConfig.ValidateData)
{
long oldPos = _reader.BaseStream.Position;
_reader.BaseStream.Position = 0;
byte[] newHash = _md5.ComputeHash(_reader.ReadBytes(headerSize > 0 ? headerSize : size));
if (!md5.EqualsTo(newHash))
{
throw new BLTEDecoderException("data corrupted");
}
_reader.BaseStream.Position = oldPos;
}
int numBlocks = 1;
if (headerSize > 0)
{
if (size < 12)
{
throw new BLTEDecoderException("not enough data: {0}", 12);
}
byte[] fcbytes = _reader.ReadBytes(4);
numBlocks = fcbytes[1] << 16 | fcbytes[2] << 8 | fcbytes[3] << 0;
if (fcbytes[0] != 0x0F || numBlocks == 0)
{
throw new BLTEDecoderException("bad table format 0x{0:x2}, numBlocks {1}", fcbytes[0], numBlocks);
}
int frameHeaderSize = 24 * numBlocks + 12;
if (headerSize != frameHeaderSize)
{
throw new BLTEDecoderException("header size mismatch");
}
if (size < frameHeaderSize)
{
throw new BLTEDecoderException("not enough data: {0}", frameHeaderSize);
}
}
DataBlock[] blocks = new DataBlock[numBlocks];
for (int i = 0; i < numBlocks; i++)
{
DataBlock block = new DataBlock();
if (headerSize != 0)
{
block.CompSize = _reader.ReadInt32BE();
block.DecompSize = _reader.ReadInt32BE();
block.Hash = _reader.Read <MD5Hash>();
}
else
{
block.CompSize = size - 8;
block.DecompSize = size - 8 - 1;
block.Hash = default(MD5Hash);
}
blocks[i] = block;
}
_memStream = new MemoryStream(blocks.Sum(b => b.DecompSize));
for (int i = 0; i < blocks.Length; i++)
{
DataBlock block = blocks[i];
block.Data = _reader.ReadBytes(block.CompSize);
if (!block.Hash.IsZeroed() && CASCConfig.ValidateData)
{
byte[] blockHash = _md5.ComputeHash(block.Data);
if (!block.Hash.EqualsTo(blockHash))
{
throw new BLTEDecoderException("MD5 mismatch");
}
}
HandleDataBlock(block.Data, i);
}
}
private void Parse(MD5Hash hash)
{
int size = (int)reader.BaseStream.Length;
if (size < 8)
throw new BLTEDecoderException("Invalid data length: {0}", 8);
int magic = reader.ReadInt32();
if (magic != BLTE_MAGIC)
throw new BLTEDecoderException("Mis-matched header (magic)");
int headerSize = reader.ReadInt32BE();
if (CASCConfig.ValidateData)
{
long oldPos = reader.BaseStream.Position;
reader.BaseStream.Position = 0;
byte[] newHash = this.hash.ComputeHash(reader.ReadBytes(headerSize > 0 ? headerSize : size));
if (!hash.EqualsTo(newHash))
throw new BLTEDecoderException("Corrupted data?");
reader.BaseStream.Position = oldPos;
}
int numBlocks = 1;
if (headerSize > 0)
{
if (size < 12)
throw new BLTEDecoderException("Not enough data: {0}", 12);
byte[] bytes = reader.ReadBytes(4);
numBlocks = bytes[1] << 16 | bytes[2] << 8 | bytes[3] << 0;
if (bytes[0] != 0x0F || numBlocks == 0)
throw new BLTEDecoderException("Invalid table format 0x{0:x2}, numBlocks {1}", bytes[0], numBlocks);
int frameHeaderSize = 24 * numBlocks + 12;
if (headerSize != frameHeaderSize)
throw new BLTEDecoderException("Header size mis-match");
if (size < frameHeaderSize)
throw new BLTEDecoderException("Not enough data: {0}", frameHeaderSize);
}
dataBlocks = new DataBlock[numBlocks];
for (int i = 0; i < numBlocks; i++)
{
DataBlock block = new DataBlock();
if (headerSize != 0)
{
block.CompSize = reader.ReadInt32BE();
block.DecompSize = reader.ReadInt32BE();
block.Hash = reader.Read<MD5Hash>();
}
else
{
block.CompSize = size - 8;
block.DecompSize = size - 8 - 1;
block.Hash = default(MD5Hash);
}
dataBlocks[i] = block;
}
streamMemory = new MemoryStream(dataBlocks.Sum(b => b.DecompSize));
ProcessNextBlock();
length = headerSize == 0 ? streamMemory.Length : streamMemory.Capacity;
}
private Stream GetLocalDataStreamInternal(IndexEntry idxInfo, MD5Hash key)
{
if (idxInfo == null)
throw new Exception("Missing local index.");
Stream dataStream = GetDataStream(idxInfo.Index);
dataStream.Position = idxInfo.Offset;
using (BinaryReader reader = new BinaryReader(dataStream, System.Text.Encoding.ASCII, true))
{
byte[] md5 = reader.ReadBytes(16);
Array.Reverse(md5);
if (!key.EqualsTo(md5))
throw new Exception("local data corrupted");
int size = reader.ReadInt32();
if (size != idxInfo.Size)
throw new Exception("local data corrupted");
//byte[] unkData1 = reader.ReadBytes(2);
//byte[] unkData2 = reader.ReadBytes(8);
dataStream.Position += 10;
byte[] data = reader.ReadBytes(idxInfo.Size - 30);
return new MemoryStream(data);
}
}
private void Parse(MD5Hash hash)
{
int size = (int)reader.BaseStream.Length;
if (size < 8)
{
throw new BLTEDecoderException("Invalid data length: {0}", 8);
}
int magic = reader.ReadInt32();
if (magic != BLTE_MAGIC)
{
throw new BLTEDecoderException("Mis-matched header (magic)");
}
int headerSize = reader.ReadInt32BE();
if (CASCConfig.ValidateData)
{
long oldPos = reader.BaseStream.Position;
reader.BaseStream.Position = 0;
byte[] newHash = this.hash.ComputeHash(reader.ReadBytes(headerSize > 0 ? headerSize : size));
if (!hash.EqualsTo(newHash))
{
throw new BLTEDecoderException("Corrupted data?");
}
reader.BaseStream.Position = oldPos;
}
int numBlocks = 1;
if (headerSize > 0)
{
if (size < 12)
{
throw new BLTEDecoderException("Not enough data: {0}", 12);
}
byte[] bytes = reader.ReadBytes(4);
numBlocks = bytes[1] << 16 | bytes[2] << 8 | bytes[3] << 0;
if (bytes[0] != 0x0F || numBlocks == 0)
{
throw new BLTEDecoderException("Invalid table format 0x{0:x2}, numBlocks {1}", bytes[0], numBlocks);
}
int frameHeaderSize = 24 * numBlocks + 12;
if (headerSize != frameHeaderSize)
{
throw new BLTEDecoderException("Header size mis-match");
}
if (size < frameHeaderSize)
{
throw new BLTEDecoderException("Not enough data: {0}", frameHeaderSize);
}
}
dataBlocks = new DataBlock[numBlocks];
for (int i = 0; i < numBlocks; i++)
{
DataBlock block = new DataBlock();
if (headerSize != 0)
{
block.CompSize = reader.ReadInt32BE();
block.DecompSize = reader.ReadInt32BE();
block.Hash = reader.Read <MD5Hash>();
}
else
{
block.CompSize = size - 8;
block.DecompSize = size - 8 - 1;
block.Hash = default(MD5Hash);
}
dataBlocks[i] = block;
}
streamMemory = new MemoryStream(dataBlocks.Sum(b => b.DecompSize));
ProcessNextBlock();
length = headerSize == 0 ? streamMemory.Length : streamMemory.Capacity;
}
private void Parse(MD5Hash md5)
{
int size = (int)_reader.BaseStream.Length;
if (size < 8)
throw new BLTEDecoderException("not enough data: {0}", 8);
int magic = _reader.ReadInt32();
if (magic != BLTE_MAGIC)
throw new BLTEDecoderException("frame header mismatch (bad BLTE file)");
int headerSize = _reader.ReadInt32BE();
if (CASCConfig.ValidateData)
{
long oldPos = _reader.BaseStream.Position;
_reader.BaseStream.Position = 0;
byte[] newHash = _md5.ComputeHash(_reader.ReadBytes(headerSize > 0 ? headerSize : size));
if (!md5.EqualsTo(newHash))
throw new BLTEDecoderException("data corrupted");
_reader.BaseStream.Position = oldPos;
}
int numBlocks = 1;
if (headerSize > 0)
{
if (size < 12)
throw new BLTEDecoderException("not enough data: {0}", 12);
byte[] fcbytes = _reader.ReadBytes(4);
numBlocks = fcbytes[1] << 16 | fcbytes[2] << 8 | fcbytes[3] << 0;
if (fcbytes[0] != 0x0F || numBlocks == 0)
throw new BLTEDecoderException("bad table format 0x{0:x2}, numBlocks {1}", fcbytes[0], numBlocks);
int frameHeaderSize = 24 * numBlocks + 12;
if (headerSize != frameHeaderSize)
throw new BLTEDecoderException("header size mismatch");
if (size < frameHeaderSize)
throw new BLTEDecoderException("not enough data: {0}", frameHeaderSize);
}
_dataBlocks = new DataBlock[numBlocks];
for (int i = 0; i < numBlocks; i++)
{
DataBlock block = new DataBlock();
if (headerSize != 0)
{
block.CompSize = _reader.ReadInt32BE();
block.DecompSize = _reader.ReadInt32BE();
block.Hash = _reader.Read<MD5Hash>();
}
else
{
block.CompSize = size - 8;
block.DecompSize = size - 8 - 1;
block.Hash = default(MD5Hash);
}
_dataBlocks[i] = block;
}
_memStream = new MemoryStream(_dataBlocks.Sum(b => b.DecompSize));
ProcessNextBlock();
_length = headerSize == 0 ? _memStream.Length : _memStream.Capacity;
//for (int i = 0; i < _dataBlocks.Length; i++)
//{
// ProcessNextBlock();
//}
}
