예제 #1
0
        public override void OnPacketInbound(Packet pPacket)
        {
            if (pPacket.Length == 0)
            {
                return;
            }
            StartLogging();
            try
            {
                byte header = pPacket.ReadByte();

                if (IsConnectedAsClient)
                {
                    if (header == (byte)ServerMessages.PING)
                    {
                        SendPong();
                    }
                }
                else
                {
                    if (header == (byte)ClientMessages.PONG)
                    {
                        gotPong = true;
                        PingMS  = (int)(MasterThread.CurrentTime - pingSentDateTime);
                    }
                    else if (header == (byte)ClientMessages.__CUSTOM_DC_ME__)
                    {
                        ScheduleDisconnect();
                        return;
                    }
                    else if (MEMORY_CRC_ENABLED)
                    {
                        // Check for expected CRC packet
                        if ((BitConverter.ToUInt16(previousDecryptIV, 0) % 31) == 0)
                        {
                            bool disconnect = true;
                            if (header == (byte)ClientMessages.CLIENT_HASH)
                            {
                                var mode = pPacket.ReadByte();
                                if (mode == 1)
                                {
                                    var clientCRC = pPacket.ReadUInt();
                                    if (ValidateCRC(clientCRC))
                                    {
                                        disconnect = false;
                                    }
                                    else
                                    {
                                        log.Error($"Disconnecting client because CRC didnt match {clientCRC}");
                                    }
                                }
                                else
                                {
                                    log.Error($"Disconnecting client because unexpected mode: {mode}");
                                }
                            }
                            else
                            {
                                log.Error(
                                    $"Disconnecting client because expected CLIENT_HASH packet, but got {header} instead");
                            }

                            if (disconnect)
                            {
                                Disconnect();
                                return;
                            }
                        }
                    }
                }

                pPacket.Reset(0);

                AC_OnPacketInbound(pPacket);
            }
            catch (Exception ex)
            {
                log.Error(ex);
            }
            finally
            {
                EndLogging();
            }
        }