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Location: cpp/openttd-patchpack/source/src/network/core/tcp_game.cpp - annotation
r17431:9cebd3c06e25
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(svn r22195) -Fix (r22188): make sure makedep picks up the newly generated settings.h so settings.cpp gets recompiled when needed
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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 <http://www.gnu.org/licenses/>.
*/
/**
* @file tcp_game.cpp Basic functions to receive and send TCP packets for game purposes.
*/
#ifdef ENABLE_NETWORK
#include "../../stdafx.h"
#include "../network.h"
#include "../network_internal.h"
#include "../../debug.h"
#include "table/strings.h"
/**
* Create a new socket for the game connection.
* @param s The socket to connect with.
*/
NetworkGameSocketHandler::NetworkGameSocketHandler(SOCKET s)
{
this->sock = s;
this->last_frame = _frame_counter;
this->last_frame_server = _frame_counter;
this->last_packet = _realtime_tick;
}
/**
* Functions to help ReceivePacket/SendPacket a bit
* A socket can make errors. When that happens this handles what to do.
* For clients: close connection and drop back to main-menu
* For servers: close connection and that is it
* @return the new status
*/
NetworkRecvStatus NetworkGameSocketHandler::CloseConnection(bool error)
{
/* Clients drop back to the main menu */
if (!_network_server && _networking) {
_switch_mode = SM_MENU;
_networking = false;
extern StringID _switch_mode_errorstr;
_switch_mode_errorstr = STR_NETWORK_ERROR_LOSTCONNECTION;
return NETWORK_RECV_STATUS_CONN_LOST;
}
return this->CloseConnection(error ? NETWORK_RECV_STATUS_SERVER_ERROR : NETWORK_RECV_STATUS_CONN_LOST);
}
/**
* Defines a simple (switch) case for each network packet
* @param type the packet type to create the case for
*/
#define GAME_COMMAND(type) case type: return this->NetworkPacketReceive_ ## type ## _command(p); break;
/**
* Handle the given packet, i.e. pass it to the right parser receive command.
* @param p the packet to handle
* @return #NetworkRecvStatus of handling.
*/
NetworkRecvStatus NetworkGameSocketHandler::HandlePacket(Packet *p)
{
PacketGameType type = (PacketGameType)p->Recv_uint8();
this->last_packet = _realtime_tick;
switch (this->HasClientQuit() ? PACKET_END : type) {
GAME_COMMAND(PACKET_SERVER_FULL)
GAME_COMMAND(PACKET_SERVER_BANNED)
GAME_COMMAND(PACKET_CLIENT_JOIN)
GAME_COMMAND(PACKET_SERVER_ERROR)
GAME_COMMAND(PACKET_CLIENT_COMPANY_INFO)
GAME_COMMAND(PACKET_SERVER_COMPANY_INFO)
GAME_COMMAND(PACKET_SERVER_CLIENT_INFO)
GAME_COMMAND(PACKET_SERVER_NEED_GAME_PASSWORD)
GAME_COMMAND(PACKET_SERVER_NEED_COMPANY_PASSWORD)
GAME_COMMAND(PACKET_CLIENT_GAME_PASSWORD)
GAME_COMMAND(PACKET_CLIENT_COMPANY_PASSWORD)
GAME_COMMAND(PACKET_SERVER_WELCOME)
GAME_COMMAND(PACKET_CLIENT_GETMAP)
GAME_COMMAND(PACKET_SERVER_WAIT)
GAME_COMMAND(PACKET_SERVER_MAP_BEGIN)
GAME_COMMAND(PACKET_SERVER_MAP_SIZE)
GAME_COMMAND(PACKET_SERVER_MAP_DATA)
GAME_COMMAND(PACKET_SERVER_MAP_DONE)
GAME_COMMAND(PACKET_CLIENT_MAP_OK)
GAME_COMMAND(PACKET_SERVER_JOIN)
GAME_COMMAND(PACKET_SERVER_FRAME)
GAME_COMMAND(PACKET_SERVER_SYNC)
GAME_COMMAND(PACKET_CLIENT_ACK)
GAME_COMMAND(PACKET_CLIENT_COMMAND)
GAME_COMMAND(PACKET_SERVER_COMMAND)
GAME_COMMAND(PACKET_CLIENT_CHAT)
GAME_COMMAND(PACKET_SERVER_CHAT)
GAME_COMMAND(PACKET_CLIENT_SET_PASSWORD)
GAME_COMMAND(PACKET_CLIENT_SET_NAME)
GAME_COMMAND(PACKET_CLIENT_QUIT)
GAME_COMMAND(PACKET_CLIENT_ERROR)
GAME_COMMAND(PACKET_SERVER_QUIT)
GAME_COMMAND(PACKET_SERVER_ERROR_QUIT)
GAME_COMMAND(PACKET_SERVER_SHUTDOWN)
GAME_COMMAND(PACKET_SERVER_NEWGAME)
GAME_COMMAND(PACKET_SERVER_RCON)
GAME_COMMAND(PACKET_CLIENT_RCON)
GAME_COMMAND(PACKET_SERVER_CHECK_NEWGRFS)
GAME_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED)
GAME_COMMAND(PACKET_SERVER_MOVE)
GAME_COMMAND(PACKET_CLIENT_MOVE)
GAME_COMMAND(PACKET_SERVER_COMPANY_UPDATE)
GAME_COMMAND(PACKET_SERVER_CONFIG_UPDATE)
default:
this->CloseConnection();
if (this->HasClientQuit()) {
DEBUG(net, 0, "[tcp/game] received invalid packet type %d from client %d", type, this->client_id);
} else {
DEBUG(net, 0, "[tcp/game] received illegal packet from client %d", this->client_id);
}
return NETWORK_RECV_STATUS_MALFORMED_PACKET;
}
}
/**
* Do the actual receiving of packets.
* As long as HandlePacket returns OKAY packets are handled. Upon
* failure, or no more packets to process the last result of
* HandlePacket is returned.
* @return #NetworkRecvStatus of the last handled packet.
*/
NetworkRecvStatus NetworkGameSocketHandler::ReceivePackets()
{
Packet *p;
while ((p = this->ReceivePacket()) != NULL) {
NetworkRecvStatus res = HandlePacket(p);
delete p;
if (res != NETWORK_RECV_STATUS_OKAY) return res;
}
return NETWORK_RECV_STATUS_OKAY;
}
/**
* Create stub implementations for all receive commands that only
* show a warning that the given command is not available for the
* socket where the packet came from.
* @param type the packet type to create the stub for
*/
#define DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(type) \
NetworkRecvStatus NetworkGameSocketHandler::NetworkPacketReceive_## type ##_command(Packet *p) \
{ \
DEBUG(net, 0, "[tcp/game] received illegal packet type %d from client %d", \
type, this->client_id); \
return NETWORK_RECV_STATUS_MALFORMED_PACKET; \
}
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_FULL)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_BANNED)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_JOIN)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_ERROR)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_COMPANY_INFO)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_COMPANY_INFO)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_CLIENT_INFO)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_NEED_GAME_PASSWORD)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_NEED_COMPANY_PASSWORD)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_GAME_PASSWORD)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_COMPANY_PASSWORD)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_WELCOME)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_GETMAP)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_WAIT)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_MAP_BEGIN)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_MAP_SIZE)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_MAP_DATA)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_MAP_DONE)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_MAP_OK)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_JOIN)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_FRAME)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_SYNC)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_ACK)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_COMMAND)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_COMMAND)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_CHAT)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_CHAT)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_SET_PASSWORD)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_SET_NAME)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_QUIT)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_ERROR)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_QUIT)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_ERROR_QUIT)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_SHUTDOWN)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_NEWGAME)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_RCON)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_RCON)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_CHECK_NEWGRFS)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_MOVE)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_CLIENT_MOVE)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_COMPANY_UPDATE)
DEFINE_UNAVAILABLE_GAME_RECEIVE_COMMAND(PACKET_SERVER_CONFIG_UPDATE)
#endif /* ENABLE_NETWORK */
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