tcp_turn.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */
 
#include "../../stdafx.h"
#include "../../timer/timer_game_calendar.h"
#include "../../debug.h"
#include "tcp_turn.h"
 
#include "../../safeguards.h"
 
bool NetworkTurnSocketHandler::HandlePacket(Packet &p)
{
  PacketTurnType type = (PacketTurnType)p.Recv_uint8();
 
  switch (type) {
    case PACKET_TURN_TURN_ERROR:     return this->Receive_TURN_ERROR(p);
    case PACKET_TURN_SERCLI_CONNECT: return this->Receive_SERCLI_CONNECT(p);
    case PACKET_TURN_TURN_CONNECTED: return this->Receive_TURN_CONNECTED(p);
 
    default:
      Debug(net, 0, "[tcp/turn] Received invalid packet type {}", type);
      return false;
  }
}
 
bool NetworkTurnSocketHandler::ReceivePackets()
{
  std::unique_ptr<Packet> p;
  static const int MAX_PACKETS_TO_RECEIVE = 4;
  int i = MAX_PACKETS_TO_RECEIVE;
  while (--i != 0 && (p = this->ReceivePacket()) != nullptr) {
    bool cont = this->HandlePacket(*p);
    if (!cont) return true;
  }
 
  return i != MAX_PACKETS_TO_RECEIVE - 1;
}
 
bool NetworkTurnSocketHandler::ReceiveInvalidPacket(PacketTurnType type)
{
  Debug(net, 0, "[tcp/turn] Received illegal packet type {}", type);
  return false;
}
 
bool NetworkTurnSocketHandler::Receive_TURN_ERROR(Packet &) { return this->ReceiveInvalidPacket(PACKET_TURN_TURN_ERROR); }
bool NetworkTurnSocketHandler::Receive_SERCLI_CONNECT(Packet &) { return this->ReceiveInvalidPacket(PACKET_TURN_SERCLI_CONNECT); }
bool NetworkTurnSocketHandler::Receive_TURN_CONNECTED(Packet &) { return this->ReceiveInvalidPacket(PACKET_TURN_TURN_CONNECTED); }