public void ProcessFromClient(byte[] buffer) { int length = buffer.Length; Array.Copy(buffer, clientRecvMsg.GetBuffer(), length); clientRecvMsg.Length = length; OnReceivedDataFromClient(clientRecvMsg.Data); switch (protocol) { case Protocol.None: case Protocol.Login: ParseFirstClientMsg(); break; case Protocol.World: bool adlerOkay = clientRecvMsg.CheckAdler32(); bool decryptOkay = clientRecvMsg.XteaDecrypt(client.IO.XteaKey); if (adlerOkay && decryptOkay) { clientRecvMsg.Position = 6; int msgLength = (int)clientRecvMsg.GetUInt16() + 8; int position = clientRecvMsg.Position; if (!ParsePacketFromClient(client, clientRecvMsg, serverSendMsg)) { //unknown packet byte[] unknown = clientRecvMsg.GetBytes(clientRecvMsg.Length - clientRecvMsg.Position); OnSplitPacketFromClient(unknown[0], unknown); } byte[] data = new byte[clientRecvMsg.Position - position]; Array.Copy(clientRecvMsg.GetBuffer(), position, data, 0, data.Length); OnSplitPacketFromClient(data[0], data); } break; } }
private void ClientReadCallBack(IAsyncResult ar) { byte[] clientData = null; try { int read = clientStream.EndRead(ar); if (read < 2) { Restart(); return; } int pSize = (int)BitConverter.ToUInt16(clientRecvMsg.GetBuffer(), 0) + 2; while (read < pSize) { if (clientStream.CanRead) { read += clientStream.Read(clientRecvMsg.GetBuffer(), read, pSize - read); } else { throw new Exception("Connection broken."); } } clientRecvMsg.Length = pSize; switch (protocol) { case Protocol.None: ParseFirstClientMsg(); break; case Protocol.World: OnReceivedDataFromClient(clientRecvMsg.Data); clientData = clientRecvMsg.Data; if (clientRecvMsg.CheckAdler32() && clientRecvMsg.XteaDecrypt(xteaKey)) { clientRecvMsg.Position = clientRecvMsg.GetPacketHeaderSize(); int msgLength = (int)clientRecvMsg.GetUInt16() + 8; serverSendMsg.Reset(); int position = clientRecvMsg.Position; if (!ParsePacketFromClient(client, clientRecvMsg, serverSendMsg)) { //unknown packet byte[] unknown = clientRecvMsg.GetBytes(clientRecvMsg.Length - clientRecvMsg.Position); OnSplitPacketFromClient(unknown[0], unknown); WriteDebug("Unknown outgoing packet: " + unknown.ToHexString()); serverSendMsg.AddBytes(unknown); } byte[] data = new byte[clientRecvMsg.Position - position]; Array.Copy(clientRecvMsg.GetBuffer(), position, data, 0, data.Length); OnSplitPacketFromClient(data[0], data); if (AllowOutgoingModification && serverSendMsg.Length > serverSendMsg.GetPacketHeaderSize() + 2) { serverSendMsg.InsetLogicalPacketHeader(); serverSendMsg.PrepareToSend(xteaKey); SendToServer(serverSendMsg.Data); } else { SendToServer(clientData); } } else { SendToServer(clientData); } clientStream.BeginRead(clientRecvMsg.GetBuffer(), 0, 2, new AsyncCallback(ClientReadCallBack), null); break; case Protocol.Login: break; } } catch (ObjectDisposedException) { /*We don't have to log this exception. */ } catch (System.IO.IOException ex) { WriteDebug(ex.ToString()); } catch (Exception ex) { WriteDebug(ex.ToString()); if (clientData != null) { SendToServer(clientData); } } }
public void ProcessFromServer(byte[] buffer) { int length = (int)BitConverter.ToUInt16(buffer, 0) + 2; if (length > buffer.Length) { // Packet is split into multiple chunks if (partialPacketSize == 0) { // This is the first chunk fullPacketSize = length; Array.Copy(buffer, serverRecvMsg.GetBuffer(), buffer.Length); partialPacketSize = buffer.Length; return; } else { // This is a subsequent chunk Array.Copy(buffer, 0, serverRecvMsg.GetBuffer(), partialPacketSize, buffer.Length); partialPacketSize += buffer.Length; if (partialPacketSize < fullPacketSize) { // Packet is still incomplete return; } else { // Packet is complete serverRecvMsg.Length = fullPacketSize; } } } else { fullPacketSize = 0; partialPacketSize = 0; Array.Copy(buffer, serverRecvMsg.GetBuffer(), length); serverRecvMsg.Length = length; } OnReceivedDataFromServer(serverRecvMsg.Data); switch (protocol) { case Protocol.Login: break; case Protocol.World: bool adlerOkay = serverRecvMsg.CheckAdler32(); bool decryptOkay = serverRecvMsg.XteaDecrypt(client.IO.XteaKey); if (adlerOkay && decryptOkay) { serverRecvMsg.Position = 6; int msgSize = (int)serverRecvMsg.GetUInt16() + 8; clientSendMsg.Reset(); while (serverRecvMsg.Position < msgSize) { int position = serverRecvMsg.Position; bool parsed = false; try { parsed = ParsePacketFromServer(client, serverRecvMsg, clientSendMsg); } catch (Exception ex) { WriteDebug(ex.Message + "\nStackTrace: " + ex.StackTrace); } if (!parsed) { if (serverRecvMsg.Length - serverRecvMsg.Position > 0 && serverRecvMsg.Length < serverRecvMsg.GetBuffer().Length) { byte[] unknown = serverRecvMsg.GetBytes(serverRecvMsg.Length - serverRecvMsg.Position); OnSplitPacketFromServer(unknown[0], unknown); } break; } if (serverRecvMsg.Position - position > 0) { byte[] data = new byte[serverRecvMsg.Position - position]; Array.Copy(serverRecvMsg.GetBuffer(), position, data, 0, data.Length); OnSplitPacketFromServer(data[0], data); } } } break; case Protocol.None: break; } }