//for a given bbt entry, retrieve the raw bytes associated with the BID
//this includes retrieving data trees via xblocks
public static List<BlockDataDTO> GetBBTEntryData(BBTENTRY entry, PSTFile pst)
{
var dataSize = entry.BlockByteCount;
var blockSize = entry.BlockByteCount + 16;
if (blockSize % 64 != 0)
blockSize += 64 - (blockSize%64);
List<BlockDataDTO> dataBlocks;
/*if (isSubNode)
{
using (var viewer = PSTFile.PSTMMF.CreateViewAccessor((long)entry.BREF.IB, blockSize))
{
var blockBytes = new byte[dataSize];
viewer.ReadArray(0, blockBytes, 0, dataSize);
dataBlocks = new List<BlockDataDTO>
{new BlockDataDTO {Data = blockBytes, PstOffset = entry.BREF.IB, BBTEntry = entry}};
return dataBlocks;
}
} else */
if (entry.Internal)
{
using(var viewer = pst.PSTMMF.CreateViewAccessor((long)entry.BREF.IB,blockSize))
{
var blockBytes = new byte[dataSize];
viewer.ReadArray(0, blockBytes, 0, dataSize);
var trailerBytes = new byte[16];
viewer.ReadArray(blockSize-16, trailerBytes, 0, 16);
var trailer = new BlockTrailer(trailerBytes, 0);
var dataBlockDTO = new BlockDataDTO
{
Data = blockBytes,
PstOffset = entry.BREF.IB,
CRCOffset = (uint)((long)entry.BREF.IB + (blockSize - 12)),
BBTEntry = entry
};
var type = blockBytes[0];
var level = blockBytes[1];
if (type == 2) //si or sl entry
{
return new List<BlockDataDTO> {dataBlockDTO};
} else if (type == 1)
{
if (blockBytes[1] == 0x01) //XBLOCK
{
var xblock = new XBLOCK(dataBlockDTO);
return BlockBO.GetXBlockData(xblock, pst);
} else //XXBLOCK
{
var xxblock = new XXBLOCK(dataBlockDTO);
return BlockBO.GetXXBlockData(xxblock, pst);
}
} else
{
throw new NotImplementedException();
}
}
} else
{
using(var viewer = pst.PSTMMF.CreateViewAccessor((long)entry.BREF.IB,blockSize))
{
var dataBytes = new byte[dataSize];
viewer.ReadArray(0, dataBytes, 0, dataSize);
var trailerBytes = new byte[16];
viewer.ReadArray(blockSize-16, trailerBytes, 0, 16);
var trailer = new BlockTrailer(trailerBytes, 0);
dataBlocks = new List<BlockDataDTO>
{
new BlockDataDTO
{
Data = dataBytes,
PstOffset = entry.BREF.IB,
CRC32 = trailer.CRC,
CRCOffset = (uint) (blockSize -12),
BBTEntry = entry
}
};
}
}
for (int i = 0; i < dataBlocks.Count; i++)
{
var temp = dataBlocks[i].Data;
DatatEncoder.CryptPermute(temp, temp.Length, false, pst);
}
return dataBlocks;
}
