//public Packet(byte[] data)
// : this()
//{
// ParseData(ref data);
//}
public Packet(BinaryReader reader, PacketEncryptor packetEncryptor)
: this()
{
var header = reader.ReadBytes(HEADER_SIZE);
var packetBody = default(byte[]);
var xorKey = new byte[4];
Array.Copy(header, xorKey, xorKey.Length);
XorBytes(xorKey, ref header);
var encrypted = false;
var packetType = PacketType.Request;
using (var headerStream = new MemoryStream(header))
using (var headerReader = new BinaryReader(headerStream))
{
// Move to the encryption flags
headerReader.BaseStream.Seek(ENC_LENGTH, SeekOrigin.Begin);
var encFlags = headerReader.ReadDword();
var bytesToRead = headerReader.ReadDword() - 8;
packetType = headerReader.ReadPacketType();
packetBody = reader.ReadBytes((int)bytesToRead);
encrypted = encFlags == PacketEncryptor.ENC_AES256;
}
XorBytes(xorKey, ref packetBody);
if (encrypted)
{
packetBody = packetEncryptor.AesDecrypt(packetBody);
}
ParseData(packetType, ref packetBody);
}
public Packet(BinaryReader reader, PacketEncryptor packetEncryptor = null)
: this()
{
packetEncryptor = packetEncryptor ?? PacketEncryptor.Blank;
var header = reader.ReadBytes(HEADER_SIZE);
var packetBody = default(byte[]);
var xorKey = new byte[4];
Array.Copy(header, xorKey, xorKey.Length);
header.Xor(xorKey);
var encrypted = false;
var packetType = PacketType.Request;
using (var headerStream = new MemoryStream(header))
using (var headerReader = new BinaryReader(headerStream))
{
// Move to the encryption flags
headerReader.BaseStream.Seek(ENC_LENGTH, SeekOrigin.Begin);
var encFlags = headerReader.ReadDword();
var bytesToRead = headerReader.ReadDword() - 8;
packetType = headerReader.ReadPacketType();
packetBody = reader.ReadBytes((int)bytesToRead);
encrypted = encFlags == PacketEncryptor.ENC_AES256;
}
packetBody.Xor(xorKey);
if (encrypted)
{
// TODO: if we don't have a packet encryptor, then we should probably
// bail out.
packetBody = packetEncryptor.AesDecrypt(packetBody);
}
ParseData(packetType, ref packetBody);
}