public XvcLicenseBlock GetBlockWithId(XvcLicenseBlockId id)
{
int idLen = (IsEkbFile ? 2 : 4);
int szLen = 4;
if (BlockId == id)
{
return(this);
}
XvcLicenseBlock block;
if (BlockSize > (idLen + szLen) && BlockSize >= (idLen + szLen) + BlockDataAsBlock.BlockSize)
{
block = BlockDataAsBlock.GetBlockWithId(id);
if (block != null)
{
return(block);
}
}
if (NextBlockData.Length <= (idLen + szLen) || NextBlockData.Length < (idLen + szLen) + NextBlockDataAsBlock.BlockSize)
{
return(null);
}
block = NextBlockDataAsBlock.GetBlockWithId(id);
if (block != null)
{
return(block);
}
return(null);
}
public XvcLicenseBlock(byte[] data, bool isEkbFile = false)
{
IsEkbFile = isEkbFile;
int idLen = (IsEkbFile ? 2 : 4);
int szLen = 4;
if (data.Length >= idLen)
{
BlockId = (XvcLicenseBlockId)(isEkbFile ? BitConverter.ToUInt16(data, 0) : BitConverter.ToUInt32(data, 0));
}
if (isEkbFile && BlockId == (XvcLicenseBlockId)0x4b45)
{
// if its an ekb file and we read the magic of the EKB skip 2 bytes
idLen = 4;
BlockId = (XvcLicenseBlockId)BitConverter.ToUInt16(data, 2);
}
if (!isEkbFile && BlockId == (XvcLicenseBlockId)0x31424b45)
{
// if we're not an EKB file but we read the EKB magic act like its an EKB
IsEkbFile = true;
idLen = 4;
BlockId = (XvcLicenseBlockId)BitConverter.ToUInt16(data, 2);
}
if (data.Length >= (idLen + szLen))
{
BlockSize = BitConverter.ToUInt32(data, idLen);
}
if (data.Length < BlockSize + (idLen + szLen))
{
return;
}
BlockData = new byte[BlockSize];
Array.Copy(data, (idLen + szLen), BlockData, 0, BlockSize);
if (data.Length - (BlockSize + (idLen + szLen)) <= 0)
{
return;
}
NextBlockData = new byte[data.Length - (BlockSize + (idLen + szLen))];
Array.Copy(data, BlockSize + (idLen + szLen), NextBlockData, 0, NextBlockData.Length);
idLen = (IsEkbFile ? 2 : 4);
szLen = 4;
MinBlockLength = idLen + szLen;
}
public XvcLicenseBlock(byte[] data, bool isEkbFile = false)
{
IsEkbFile = isEkbFile;
int idLen = (IsEkbFile ? 2 : 4);
int szLen = 4;
if (data.Length >= idLen)
BlockId = (XvcLicenseBlockId)(isEkbFile ? BitConverter.ToUInt16(data, 0) : BitConverter.ToUInt32(data, 0));
if (isEkbFile && BlockId == (XvcLicenseBlockId)0x4b45)
{
// if its an ekb file and we read the magic of the EKB skip 2 bytes
idLen = 4;
BlockId = (XvcLicenseBlockId)BitConverter.ToUInt16(data, 2);
}
if (!isEkbFile && BlockId == (XvcLicenseBlockId)0x31424b45)
{
// if we're not an EKB file but we read the EKB magic act like its an EKB
IsEkbFile = true;
idLen = 4;
BlockId = (XvcLicenseBlockId)BitConverter.ToUInt16(data, 2);
}
if (data.Length >= (idLen + szLen))
BlockSize = BitConverter.ToUInt32(data, idLen);
if (data.Length < BlockSize + (idLen + szLen))
return;
BlockData = new byte[BlockSize];
Array.Copy(data, (idLen + szLen), BlockData, 0, BlockSize);
if (data.Length - (BlockSize + (idLen + szLen)) <= 0)
return;
NextBlockData = new byte[data.Length - (BlockSize + (idLen + szLen))];
Array.Copy(data, BlockSize + (idLen + szLen), NextBlockData, 0, NextBlockData.Length);
idLen = (IsEkbFile ? 2 : 4);
szLen = 4;
MinBlockLength = idLen + szLen;
}
public XvcLicenseBlock GetBlockWithId(XvcLicenseBlockId id)
{
int idLen = (IsEkbFile ? 2 : 4);
int szLen = 4;
if (BlockId == id)
return this;
XvcLicenseBlock block;
if (BlockSize > (idLen + szLen) && BlockSize >= (idLen + szLen) + BlockDataAsBlock.BlockSize)
{
block = BlockDataAsBlock.GetBlockWithId(id);
if (block != null)
return block;
}
if (NextBlockData.Length <= (idLen + szLen) || NextBlockData.Length < (idLen + szLen) + NextBlockDataAsBlock.BlockSize)
return null;
block = NextBlockDataAsBlock.GetBlockWithId(id);
if (block != null)
return block;
return null;
}
