tcp_game.cpp

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00001 /* $Id: tcp_game.cpp 26057 2013-11-23 13:12:19Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00014 #ifdef ENABLE_NETWORK
00015 
00016 #include "../../stdafx.h"
00017 
00018 #include "../network.h"
00019 #include "../network_internal.h"
00020 #include "../../debug.h"
00021 #include "../../error.h"
00022 
00023 #include "table/strings.h"
00024 
00029 NetworkGameSocketHandler::NetworkGameSocketHandler(SOCKET s) : info(NULL), client_id(INVALID_CLIENT_ID),
00030     last_frame(_frame_counter), last_frame_server(_frame_counter), last_packet(_realtime_tick)
00031 {
00032   this->sock = s;
00033 }
00034 
00042 NetworkRecvStatus NetworkGameSocketHandler::CloseConnection(bool error)
00043 {
00044   /* Clients drop back to the main menu */
00045   if (!_network_server && _networking) {
00046     _switch_mode = SM_MENU;
00047     _networking = false;
00048     ShowErrorMessage(STR_NETWORK_ERROR_LOSTCONNECTION, INVALID_STRING_ID, WL_CRITICAL);
00049 
00050     return NETWORK_RECV_STATUS_CONN_LOST;
00051   }
00052 
00053   return this->CloseConnection(error ? NETWORK_RECV_STATUS_SERVER_ERROR : NETWORK_RECV_STATUS_CONN_LOST);
00054 }
00055 
00056 
00062 NetworkRecvStatus NetworkGameSocketHandler::HandlePacket(Packet *p)
00063 {
00064   PacketGameType type = (PacketGameType)p->Recv_uint8();
00065 
00066   this->last_packet = _realtime_tick;
00067 
00068   switch (this->HasClientQuit() ? PACKET_END : type) {
00069     case PACKET_SERVER_FULL:                  return this->Receive_SERVER_FULL(p);
00070     case PACKET_SERVER_BANNED:                return this->Receive_SERVER_BANNED(p);
00071     case PACKET_CLIENT_JOIN:                  return this->Receive_CLIENT_JOIN(p);
00072     case PACKET_SERVER_ERROR:                 return this->Receive_SERVER_ERROR(p);
00073     case PACKET_CLIENT_COMPANY_INFO:          return this->Receive_CLIENT_COMPANY_INFO(p);
00074     case PACKET_SERVER_COMPANY_INFO:          return this->Receive_SERVER_COMPANY_INFO(p);
00075     case PACKET_SERVER_CLIENT_INFO:           return this->Receive_SERVER_CLIENT_INFO(p);
00076     case PACKET_SERVER_NEED_GAME_PASSWORD:    return this->Receive_SERVER_NEED_GAME_PASSWORD(p);
00077     case PACKET_SERVER_NEED_COMPANY_PASSWORD: return this->Receive_SERVER_NEED_COMPANY_PASSWORD(p);
00078     case PACKET_CLIENT_GAME_PASSWORD:         return this->Receive_CLIENT_GAME_PASSWORD(p);
00079     case PACKET_CLIENT_COMPANY_PASSWORD:      return this->Receive_CLIENT_COMPANY_PASSWORD(p);
00080     case PACKET_SERVER_WELCOME:               return this->Receive_SERVER_WELCOME(p);
00081     case PACKET_CLIENT_GETMAP:                return this->Receive_CLIENT_GETMAP(p);
00082     case PACKET_SERVER_WAIT:                  return this->Receive_SERVER_WAIT(p);
00083     case PACKET_SERVER_MAP_BEGIN:             return this->Receive_SERVER_MAP_BEGIN(p);
00084     case PACKET_SERVER_MAP_SIZE:              return this->Receive_SERVER_MAP_SIZE(p);
00085     case PACKET_SERVER_MAP_DATA:              return this->Receive_SERVER_MAP_DATA(p);
00086     case PACKET_SERVER_MAP_DONE:              return this->Receive_SERVER_MAP_DONE(p);
00087     case PACKET_CLIENT_MAP_OK:                return this->Receive_CLIENT_MAP_OK(p);
00088     case PACKET_SERVER_JOIN:                  return this->Receive_SERVER_JOIN(p);
00089     case PACKET_SERVER_FRAME:                 return this->Receive_SERVER_FRAME(p);
00090     case PACKET_SERVER_SYNC:                  return this->Receive_SERVER_SYNC(p);
00091     case PACKET_CLIENT_ACK:                   return this->Receive_CLIENT_ACK(p);
00092     case PACKET_CLIENT_COMMAND:               return this->Receive_CLIENT_COMMAND(p);
00093     case PACKET_SERVER_COMMAND:               return this->Receive_SERVER_COMMAND(p);
00094     case PACKET_CLIENT_CHAT:                  return this->Receive_CLIENT_CHAT(p);
00095     case PACKET_SERVER_CHAT:                  return this->Receive_SERVER_CHAT(p);
00096     case PACKET_CLIENT_SET_PASSWORD:          return this->Receive_CLIENT_SET_PASSWORD(p);
00097     case PACKET_CLIENT_SET_NAME:              return this->Receive_CLIENT_SET_NAME(p);
00098     case PACKET_CLIENT_QUIT:                  return this->Receive_CLIENT_QUIT(p);
00099     case PACKET_CLIENT_ERROR:                 return this->Receive_CLIENT_ERROR(p);
00100     case PACKET_SERVER_QUIT:                  return this->Receive_SERVER_QUIT(p);
00101     case PACKET_SERVER_ERROR_QUIT:            return this->Receive_SERVER_ERROR_QUIT(p);
00102     case PACKET_SERVER_SHUTDOWN:              return this->Receive_SERVER_SHUTDOWN(p);
00103     case PACKET_SERVER_NEWGAME:               return this->Receive_SERVER_NEWGAME(p);
00104     case PACKET_SERVER_RCON:                  return this->Receive_SERVER_RCON(p);
00105     case PACKET_CLIENT_RCON:                  return this->Receive_CLIENT_RCON(p);
00106     case PACKET_SERVER_CHECK_NEWGRFS:         return this->Receive_SERVER_CHECK_NEWGRFS(p);
00107     case PACKET_CLIENT_NEWGRFS_CHECKED:       return this->Receive_CLIENT_NEWGRFS_CHECKED(p);
00108     case PACKET_SERVER_MOVE:                  return this->Receive_SERVER_MOVE(p);
00109     case PACKET_CLIENT_MOVE:                  return this->Receive_CLIENT_MOVE(p);
00110     case PACKET_SERVER_COMPANY_UPDATE:        return this->Receive_SERVER_COMPANY_UPDATE(p);
00111     case PACKET_SERVER_CONFIG_UPDATE:         return this->Receive_SERVER_CONFIG_UPDATE(p);
00112 
00113     default:
00114       this->CloseConnection();
00115 
00116       if (this->HasClientQuit()) {
00117         DEBUG(net, 0, "[tcp/game] received invalid packet type %d from client %d", type, this->client_id);
00118       } else {
00119         DEBUG(net, 0, "[tcp/game] received illegal packet from client %d", this->client_id);
00120       }
00121       return NETWORK_RECV_STATUS_MALFORMED_PACKET;
00122   }
00123 }
00124 
00132 NetworkRecvStatus NetworkGameSocketHandler::ReceivePackets()
00133 {
00134   Packet *p;
00135   while ((p = this->ReceivePacket()) != NULL) {
00136     NetworkRecvStatus res = HandlePacket(p);
00137     delete p;
00138     if (res != NETWORK_RECV_STATUS_OKAY) return res;
00139   }
00140 
00141   return NETWORK_RECV_STATUS_OKAY;
00142 }
00143 
00149 NetworkRecvStatus NetworkGameSocketHandler::ReceiveInvalidPacket(PacketGameType type)
00150 {
00151   DEBUG(net, 0, "[tcp/game] received illegal packet type %d from client %d", type, this->client_id);
00152   return NETWORK_RECV_STATUS_MALFORMED_PACKET;
00153 }
00154 
00155 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_FULL(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_FULL); }
00156 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_BANNED(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_BANNED); }
00157 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_JOIN(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_JOIN); }
00158 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_ERROR(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_ERROR); }
00159 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_COMPANY_INFO(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_COMPANY_INFO); }
00160 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_COMPANY_INFO(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_COMPANY_INFO); }
00161 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CLIENT_INFO(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_CLIENT_INFO); }
00162 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_NEED_GAME_PASSWORD(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_NEED_GAME_PASSWORD); }
00163 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_NEED_COMPANY_PASSWORD(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_NEED_COMPANY_PASSWORD); }
00164 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_GAME_PASSWORD(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_GAME_PASSWORD); }
00165 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_COMPANY_PASSWORD(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_COMPANY_PASSWORD); }
00166 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_WELCOME(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_WELCOME); }
00167 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_GETMAP(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_GETMAP); }
00168 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_WAIT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_WAIT); }
00169 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_BEGIN(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_BEGIN); }
00170 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_SIZE(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_SIZE); }
00171 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_DATA(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_DATA); }
00172 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_DONE(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_DONE); }
00173 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_MAP_OK(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_MAP_OK); }
00174 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_JOIN(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_JOIN); }
00175 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_FRAME(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_FRAME); }
00176 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_SYNC(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_SYNC); }
00177 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_ACK(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_ACK); }
00178 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_COMMAND(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_COMMAND); }
00179 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_COMMAND(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_COMMAND); }
00180 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_CHAT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_CHAT); }
00181 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CHAT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_CHAT); }
00182 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_SET_PASSWORD(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_SET_PASSWORD); }
00183 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_SET_NAME(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_SET_NAME); }
00184 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_QUIT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_QUIT); }
00185 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_ERROR(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_ERROR); }
00186 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_QUIT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_QUIT); }
00187 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_ERROR_QUIT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_ERROR_QUIT); }
00188 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_SHUTDOWN(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_SHUTDOWN); }
00189 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_NEWGAME(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_NEWGAME); }
00190 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_RCON(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_RCON); }
00191 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_RCON(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_RCON); }
00192 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CHECK_NEWGRFS(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_CHECK_NEWGRFS); }
00193 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_NEWGRFS_CHECKED(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_NEWGRFS_CHECKED); }
00194 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MOVE(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_MOVE); }
00195 NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_MOVE(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CLIENT_MOVE); }
00196 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_COMPANY_UPDATE(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_COMPANY_UPDATE); }
00197 NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CONFIG_UPDATE(Packet *p) { return this->ReceiveInvalidPacket(PACKET_SERVER_CONFIG_UPDATE); }
00198 
00199 #endif /* ENABLE_NETWORK */