public IEnumerable<IScsMessage> CreateMessages(byte[] receivedBytes)
{
var messages = new List<IScsMessage>();
// zlib compression (0x80000005) (Client sends start packet, but does not use compression?)
if (receivedBytes[0] == 0x80 && receivedBytes[1] == 0x00 &&
receivedBytes[2] == 0x00 && receivedBytes[3] == 0x05)
{
//Console.WriteLine("Skipping zlib packet");
return messages;
}
if (_backBuffer != null)
{
_stream = new PacketStream();
_stream.Write(_backBuffer, 0, _backBuffer.Length);
_stream.Write(receivedBytes, 0, receivedBytes.Length);
_backBuffer = null;
}
else
_stream = new ConanStream(receivedBytes);
while (ReadMessage(messages)) ;
return messages;
}
public IEnumerable <IScsMessage> CreateMessages(byte[] receivedBytes)
{
var messages = new List <IScsMessage>();
// zlib compression (0x80000005) (Client sends start packet, but does not use compression?)
if (receivedBytes[0] == 0x80 && receivedBytes[1] == 0x00 &&
receivedBytes[2] == 0x00 && receivedBytes[3] == 0x05)
{
//Console.WriteLine("Skipping zlib packet");
return(messages);
}
if (_backBuffer != null)
{
_stream = new PacketStream();
_stream.Write(_backBuffer, 0, _backBuffer.Length);
_stream.Write(receivedBytes, 0, receivedBytes.Length);
_backBuffer = null;
}
else
{
_stream = new ConanStream(receivedBytes);
}
while (ReadMessage(messages))
{
;
}
return(messages);
}
public static void TrimStream(ref ConanStream stream)
{
if (stream.Position == stream.Length)
{
stream = new PacketStream();
return;
}
var remaining = new byte[stream.Length - stream.Position];
stream.Read(remaining, 0, remaining.Length);
stream = new ConanStream(remaining);
}
public IEnumerable<IScsMessage> CreateMessages(byte[] receivedBytes)
{
var messages = new List<IScsMessage>();
if (_backBuffer != null)
{
_stream = new PacketStream();
_stream.Write(_backBuffer, 0, _backBuffer.Length);
_stream.Write(receivedBytes, 0, receivedBytes.Length);
_backBuffer = null;
}
else
_stream = new ConanStream(receivedBytes);
while (ReadMessage(messages)) ;
return messages;
}
public ConanPacket(ConanStream stream)
{
_originalStream = stream;
stream.Position = 0;
Length = stream.ReadUInt32();
if (Length == 0 || stream.Length < Length)
{
//throw new Exception("stream.Length < length");
Length = UInt32.MaxValue;
return;
}
Crc32 = stream.ReadUInt32();
Headersize = stream.ReadUInt32();
if (Headersize > 0xffff) // this should do..
{
//throw new Exception("Headersize > 0xffff");
Length = UInt32.MaxValue;
return;
}
Sender = stream.ReadByte();
SenderInt = stream.ReadArrayPrependLengthByte();
Receiver = stream.ReadByte();
ReceiverInt = stream.ReadArrayPrependLengthByte();
Opcode = stream.ReadUInt16();
var checkHeaderLength = Headersize - (UInt32)(sizeof(UInt32) + SenderInt.Length + ReceiverInt.Length);
if (checkHeaderLength > 0)
{
HeaderData = new ConanStream(stream.ReadArray(checkHeaderLength - sizeof(byte) * 2));
}
var dataLength = Length - (Headersize + sizeof(UInt32) * 2);
if (dataLength > 0)
{
Data = new ConanStream(stream.ReadArray(dataLength));
}
}
public AgentServerPacket(ConanStream stream)
{
_originalStream = stream;
stream.Position = 0;
Opcode = stream.ReadUInt16();
Length = stream.ReadUInt16();
if (Length == 0 || stream.Length < Length)
{
//throw new Exception("stream.Length < length");
Length = UInt16.MaxValue;
return;
}
Data = new ConanStream(stream.ReadArray(Length - sizeof (UInt16)*2u));
Console.WriteLine();
}
public ConanPacket(ConanStream stream)
{
_originalStream = stream;
stream.Position = 0;
Length = stream.ReadUInt32();
if (Length == 0 || stream.Length < Length)
{
//throw new Exception("stream.Length < length");
Length = UInt32.MaxValue;
return;
}
Crc32 = stream.ReadUInt32();
Headersize = stream.ReadUInt32();
if (Headersize > 0xffff) // this should do..
{
//throw new Exception("Headersize > 0xffff");
Length = UInt32.MaxValue;
return;
}
Sender = stream.ReadByte();
SenderInt = stream.ReadArrayPrependLengthByte();
Receiver = stream.ReadByte();
ReceiverInt = stream.ReadArrayPrependLengthByte();
Opcode = stream.ReadUInt16();
var checkHeaderLength = Headersize - (UInt32) (sizeof (UInt32) + SenderInt.Length + ReceiverInt.Length);
if (checkHeaderLength > 0)
HeaderData = new ConanStream(stream.ReadArray(checkHeaderLength - sizeof (byte)*2));
var dataLength = Length - (Headersize + sizeof (UInt32)*2);
if (dataLength > 0)
Data = new ConanStream(stream.ReadArray(dataLength));
}
public static unsafe UInt32 CalculateForPacketBuffer(ConanStream packetBuffer)
{
fixed (byte* fix = packetBuffer.GetBuffer())
{
var buffer = (UInt32*) fix + 2; // skip length and hash
var len = packetBuffer.Length - sizeof (UInt32)*2;
var crc32 = 0xffffffff;
UInt32 offset = 0;
if (len >= 32)
{
for (UInt32 i = 0; i < len >> 5; i++)
{
crc32 ^= buffer[offset];
len -= 4;
for (UInt32 ii = 0; ii < 7; ii++)
{
offset++;
crc32 = CrcTab2[crc32 >> 16 & 0xFF] ^ CrcTab3[crc32 >> 8 & 0xFF] ^ CrcTab1[crc32 >> 24] ^
CrcTab4[crc32 & 0xFF] ^ buffer[offset];
len -= 4;
}
crc32 = CrcTab2[crc32 >> 16 & 0xFF] ^ CrcTab3[crc32 >> 8 & 0xFF] ^ CrcTab1[crc32 >> 24] ^
CrcTab4[crc32 & 0xFF];
offset++;
}
}
if (len >= offset)
{
for (UInt32 i = 0; i < (len >> 2); i++)
{
crc32 ^= buffer[offset];
len -= 4;
crc32 = CrcTab2[crc32 >> 16 & 0xFF] ^ CrcTab3[crc32 >> 8 & 0xFF] ^ CrcTab1[crc32 >> 24] ^
CrcTab4[crc32 & 0xFF];
offset++;
}
}
if (len > 0)
{
offset *= 4;
for (UInt32 i = 0; i < len; i++)
{
var tmp = *(byte*) ((UInt64) buffer + offset);
crc32 = (crc32 >> 8) ^ CrcTab1[(tmp ^ crc32) & 0xFF];
offset++;
}
}
return crc32 ^ 0xFFFFFFFF;
}
}
public ConanStream WriteArrayPrependLengthUInt32(ConanStream stream)
=> WriteArrayPrependLengthUInt32(stream.ToArray());
public ConanStream WriteArrayPrependLengthUInt16(ConanStream stream, bool removeLen = false)
=> WriteArrayPrependLengthUInt16(stream.ToArray(), removeLen);
public ConanStream WriteArrayPrependLengthByte(ConanStream stream)
=> WriteArrayPrependLengthByte(stream.ToArray());
public ConanStream WriteArrayPrependLengthUInt32(ConanStream stream) => WriteArrayPrependLengthUInt32(stream.ToArray());
public ConanStream WriteArrayPrependLengthUInt16(ConanStream stream, bool removeLen = false) => WriteArrayPrependLengthUInt16(stream.ToArray(), removeLen);
public ConanStream WriteArrayPrependLengthByte(ConanStream stream) => WriteArrayPrependLengthByte(stream.ToArray());
