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Location: cpp/openttd-patchpack/source/src/network/core/tcp_game.cpp - annotation
r28278:1fc682037ca2
13.6 KiB
text/x-c
Codechange: Use Ticks for BaseConsist timetable fields
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r27643:618d2fbb7cf6 r27643:618d2fbb7cf6 | /*
* 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.
*/
#include "../../stdafx.h"
#include "../network.h"
#include "../network_internal.h"
#include "../../debug.h"
#include "../../error.h"
#include "table/strings.h"
#include "../../safeguards.h"
static std::vector<std::unique_ptr<NetworkGameSocketHandler>> _deferred_deletions;
/**
* Create a new socket for the game connection.
* @param s The socket to connect with.
*/
NetworkGameSocketHandler::NetworkGameSocketHandler(SOCKET s) : info(nullptr), client_id(INVALID_CLIENT_ID),
last_frame(_frame_counter), last_frame_server(_frame_counter)
{
this->sock = s;
this->last_packet = std::chrono::steady_clock::now();
}
/**
* 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)
{
/* Clients drop back to the main menu */
if (!_network_server && _networking) {
ClientNetworkEmergencySave();
_switch_mode = SM_MENU;
_networking = false;
ShowErrorMessage(STR_NETWORK_ERROR_LOSTCONNECTION, INVALID_STRING_ID, WL_CRITICAL);
return this->CloseConnection(NETWORK_RECV_STATUS_CLIENT_QUIT);
}
return this->CloseConnection(NETWORK_RECV_STATUS_CONNECTION_LOST);
}
/**
* 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();
if (this->HasClientQuit()) {
Debug(net, 0, "[tcp/game] Received invalid packet from client {}", this->client_id);
this->CloseConnection();
return NETWORK_RECV_STATUS_MALFORMED_PACKET;
}
this->last_packet = std::chrono::steady_clock::now();
switch (type) {
case PACKET_SERVER_FULL: return this->Receive_SERVER_FULL(p);
case PACKET_SERVER_BANNED: return this->Receive_SERVER_BANNED(p);
case PACKET_CLIENT_JOIN: return this->Receive_CLIENT_JOIN(p);
case PACKET_SERVER_ERROR: return this->Receive_SERVER_ERROR(p);
case PACKET_CLIENT_GAME_INFO: return this->Receive_CLIENT_GAME_INFO(p);
case PACKET_SERVER_GAME_INFO: return this->Receive_SERVER_GAME_INFO(p);
case PACKET_SERVER_CLIENT_INFO: return this->Receive_SERVER_CLIENT_INFO(p);
case PACKET_SERVER_NEED_GAME_PASSWORD: return this->Receive_SERVER_NEED_GAME_PASSWORD(p);
case PACKET_SERVER_NEED_COMPANY_PASSWORD: return this->Receive_SERVER_NEED_COMPANY_PASSWORD(p);
case PACKET_CLIENT_GAME_PASSWORD: return this->Receive_CLIENT_GAME_PASSWORD(p);
case PACKET_CLIENT_COMPANY_PASSWORD: return this->Receive_CLIENT_COMPANY_PASSWORD(p);
case PACKET_SERVER_WELCOME: return this->Receive_SERVER_WELCOME(p);
case PACKET_CLIENT_GETMAP: return this->Receive_CLIENT_GETMAP(p);
case PACKET_SERVER_WAIT: return this->Receive_SERVER_WAIT(p);
case PACKET_SERVER_MAP_BEGIN: return this->Receive_SERVER_MAP_BEGIN(p);
case PACKET_SERVER_MAP_SIZE: return this->Receive_SERVER_MAP_SIZE(p);
case PACKET_SERVER_MAP_DATA: return this->Receive_SERVER_MAP_DATA(p);
case PACKET_SERVER_MAP_DONE: return this->Receive_SERVER_MAP_DONE(p);
case PACKET_CLIENT_MAP_OK: return this->Receive_CLIENT_MAP_OK(p);
case PACKET_SERVER_JOIN: return this->Receive_SERVER_JOIN(p);
case PACKET_SERVER_FRAME: return this->Receive_SERVER_FRAME(p);
case PACKET_SERVER_SYNC: return this->Receive_SERVER_SYNC(p);
case PACKET_CLIENT_ACK: return this->Receive_CLIENT_ACK(p);
case PACKET_CLIENT_COMMAND: return this->Receive_CLIENT_COMMAND(p);
case PACKET_SERVER_COMMAND: return this->Receive_SERVER_COMMAND(p);
case PACKET_CLIENT_CHAT: return this->Receive_CLIENT_CHAT(p);
case PACKET_SERVER_CHAT: return this->Receive_SERVER_CHAT(p);
case PACKET_SERVER_EXTERNAL_CHAT: return this->Receive_SERVER_EXTERNAL_CHAT(p);
case PACKET_CLIENT_SET_PASSWORD: return this->Receive_CLIENT_SET_PASSWORD(p);
case PACKET_CLIENT_SET_NAME: return this->Receive_CLIENT_SET_NAME(p);
case PACKET_CLIENT_QUIT: return this->Receive_CLIENT_QUIT(p);
case PACKET_CLIENT_ERROR: return this->Receive_CLIENT_ERROR(p);
case PACKET_SERVER_QUIT: return this->Receive_SERVER_QUIT(p);
case PACKET_SERVER_ERROR_QUIT: return this->Receive_SERVER_ERROR_QUIT(p);
case PACKET_SERVER_SHUTDOWN: return this->Receive_SERVER_SHUTDOWN(p);
case PACKET_SERVER_NEWGAME: return this->Receive_SERVER_NEWGAME(p);
case PACKET_SERVER_RCON: return this->Receive_SERVER_RCON(p);
case PACKET_CLIENT_RCON: return this->Receive_CLIENT_RCON(p);
case PACKET_SERVER_CHECK_NEWGRFS: return this->Receive_SERVER_CHECK_NEWGRFS(p);
case PACKET_CLIENT_NEWGRFS_CHECKED: return this->Receive_CLIENT_NEWGRFS_CHECKED(p);
case PACKET_SERVER_MOVE: return this->Receive_SERVER_MOVE(p);
case PACKET_CLIENT_MOVE: return this->Receive_CLIENT_MOVE(p);
case PACKET_SERVER_COMPANY_UPDATE: return this->Receive_SERVER_COMPANY_UPDATE(p);
case PACKET_SERVER_CONFIG_UPDATE: return this->Receive_SERVER_CONFIG_UPDATE(p);
default:
Debug(net, 0, "[tcp/game] Received invalid packet type {} from client {}", type, this->client_id);
this->CloseConnection();
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()) != nullptr) {
NetworkRecvStatus res = HandlePacket(p);
delete p;
if (res != NETWORK_RECV_STATUS_OKAY) return res;
}
return NETWORK_RECV_STATUS_OKAY;
}
/**
* Helper for logging receiving invalid packets.
* @param type The received packet type.
* @return The status the network should have, in this case: "malformed packet error".
*/
NetworkRecvStatus NetworkGameSocketHandler::ReceiveInvalidPacket(PacketGameType type)
{
Debug(net, 0, "[tcp/game] Received illegal packet type {} from client {}", type, this->client_id);
return NETWORK_RECV_STATUS_MALFORMED_PACKET;
}
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_FULL(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_FULL); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_BANNED(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_BANNED); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_JOIN(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_JOIN); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_ERROR(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_ERROR); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_GAME_INFO(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_GAME_INFO); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_GAME_INFO(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_GAME_INFO); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CLIENT_INFO(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_CLIENT_INFO); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_NEED_GAME_PASSWORD(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_NEED_GAME_PASSWORD); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_NEED_COMPANY_PASSWORD(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_NEED_COMPANY_PASSWORD); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_GAME_PASSWORD(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_GAME_PASSWORD); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_COMPANY_PASSWORD(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_COMPANY_PASSWORD); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_WELCOME(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_WELCOME); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_GETMAP(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_GETMAP); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_WAIT(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_WAIT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_BEGIN(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_BEGIN); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_SIZE(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_SIZE); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_DATA(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_DATA); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MAP_DONE(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_MAP_DONE); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_MAP_OK(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_MAP_OK); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_JOIN(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_JOIN); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_FRAME(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_FRAME); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_SYNC(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_SYNC); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_ACK(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_ACK); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_COMMAND(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_COMMAND); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_COMMAND(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_COMMAND); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_CHAT(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_CHAT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CHAT(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_CHAT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_EXTERNAL_CHAT(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_EXTERNAL_CHAT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_SET_PASSWORD(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_SET_PASSWORD); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_SET_NAME(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_SET_NAME); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_QUIT(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_QUIT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_ERROR(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_ERROR); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_QUIT(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_QUIT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_ERROR_QUIT(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_ERROR_QUIT); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_SHUTDOWN(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_SHUTDOWN); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_NEWGAME(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_NEWGAME); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_RCON(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_RCON); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_RCON(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_RCON); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CHECK_NEWGRFS(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_CHECK_NEWGRFS); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_NEWGRFS_CHECKED(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_NEWGRFS_CHECKED); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_MOVE(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_MOVE); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_CLIENT_MOVE(Packet *) { return this->ReceiveInvalidPacket(PACKET_CLIENT_MOVE); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_COMPANY_UPDATE(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_COMPANY_UPDATE); }
NetworkRecvStatus NetworkGameSocketHandler::Receive_SERVER_CONFIG_UPDATE(Packet *) { return this->ReceiveInvalidPacket(PACKET_SERVER_CONFIG_UPDATE); }
void NetworkGameSocketHandler::DeferDeletion()
{
_deferred_deletions.emplace_back(this);
this->is_pending_deletion = true;
}
/* static */ void NetworkGameSocketHandler::ProcessDeferredDeletions()
{
/* Calls deleter on all items */
_deferred_deletions.clear();
}
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