00001
00002
00005 #include "../stdafx.h"
00006 #include "../company_type.h"
00007
00008 #ifdef ENABLE_NETWORK
00009
00010 #include "../openttd.h"
00011 #include "../strings_func.h"
00012 #include "../command_func.h"
00013 #include "../variables.h"
00014 #include "../date_func.h"
00015 #include "network_internal.h"
00016 #include "network_client.h"
00017 #include "network_server.h"
00018 #include "network_content.h"
00019 #include "network_udp.h"
00020 #include "network_gamelist.h"
00021 #include "core/udp.h"
00022 #include "core/host.h"
00023 #include "network_gui.h"
00024 #include "../console_func.h"
00025 #include "../md5.h"
00026 #include "../core/random_func.hpp"
00027 #include "../window_func.h"
00028 #include "../string_func.h"
00029 #include "../company_func.h"
00030 #include "../company_base.h"
00031 #include "../settings_type.h"
00032 #include "../landscape_type.h"
00033 #include "../rev.h"
00034 #include "../core/alloc_func.hpp"
00035 #ifdef DEBUG_DUMP_COMMANDS
00036 #include "../fileio_func.h"
00037 #endif
00038 #include "table/strings.h"
00039 #include "../oldpool_func.h"
00040
00041 DECLARE_POSTFIX_INCREMENT(ClientID);
00042
00043 typedef ClientIndex NetworkClientInfoID;
00044 DEFINE_OLD_POOL_GENERIC(NetworkClientInfo, NetworkClientInfo);
00045
00046 bool _networking;
00047 bool _network_server;
00048 bool _network_available;
00049 bool _network_dedicated;
00050 bool _is_network_server;
00051 NetworkServerGameInfo _network_game_info;
00052 NetworkCompanyState *_network_company_states = NULL;
00053 ClientID _network_own_client_id;
00054 ClientID _redirect_console_to_client;
00055 bool _network_need_advertise;
00056 uint32 _network_last_advertise_frame;
00057 uint8 _network_reconnect;
00058 char *_network_host_list[10];
00059 char *_network_ban_list[25];
00060 uint32 _frame_counter_server;
00061 uint32 _frame_counter_max;
00062 uint32 _frame_counter;
00063 uint32 _last_sync_frame;
00064 uint32 _broadcast_list[MAX_INTERFACES + 1];
00065 uint32 _network_server_bind_ip;
00066 uint32 _sync_seed_1, _sync_seed_2;
00067 uint32 _sync_frame;
00068 bool _network_first_time;
00069 bool _network_udp_server;
00070 uint16 _network_udp_broadcast;
00071 uint8 _network_advertise_retries;
00072 CompanyMask _network_company_passworded;
00073
00074
00075 assert_compile((int)NETWORK_NUM_LANDSCAPES == (int)NUM_LANDSCAPE);
00076 assert_compile((int)NETWORK_COMPANY_NAME_LENGTH == MAX_LENGTH_COMPANY_NAME_BYTES);
00077
00078 extern NetworkUDPSocketHandler *_udp_client_socket;
00079 extern NetworkUDPSocketHandler *_udp_server_socket;
00080 extern NetworkUDPSocketHandler *_udp_master_socket;
00081
00082
00083 static SOCKET _listensocket;
00084
00085
00086 static byte _network_clients_connected = 0;
00087
00088 static ClientID _network_client_id = CLIENT_ID_FIRST;
00089
00090
00091 extern void StateGameLoop();
00092
00098 NetworkClientInfo *NetworkFindClientInfoFromIndex(ClientIndex index)
00099 {
00100 return IsValidNetworkClientInfoIndex(index) ? GetNetworkClientInfo(index) : NULL;
00101 }
00102
00108 NetworkClientInfo *NetworkFindClientInfoFromClientID(ClientID client_id)
00109 {
00110 NetworkClientInfo *ci;
00111
00112 FOR_ALL_CLIENT_INFOS(ci) {
00113 if (ci->client_id == client_id) return ci;
00114 }
00115
00116 return NULL;
00117 }
00118
00124 NetworkClientInfo *NetworkFindClientInfoFromIP(const char *ip)
00125 {
00126 NetworkClientInfo *ci;
00127 uint32 ip_number = inet_addr(ip);
00128
00129 FOR_ALL_CLIENT_INFOS(ci) {
00130 if (ci->client_ip == ip_number) return ci;
00131 }
00132
00133 return NULL;
00134 }
00135
00141 NetworkClientSocket *NetworkFindClientStateFromClientID(ClientID client_id)
00142 {
00143 NetworkClientSocket *cs;
00144
00145 FOR_ALL_CLIENT_SOCKETS(cs) {
00146 if (cs->client_id == client_id) return cs;
00147 }
00148
00149 return NULL;
00150 }
00151
00152
00153
00154 void NetworkGetClientName(char *client_name, size_t size, const NetworkClientSocket *cs)
00155 {
00156 const NetworkClientInfo *ci = cs->GetInfo();
00157
00158 if (StrEmpty(ci->client_name)) {
00159 snprintf(client_name, size, "Client #%4d", cs->client_id);
00160 } else {
00161 ttd_strlcpy(client_name, ci->client_name, size);
00162 }
00163 }
00164
00165 byte NetworkSpectatorCount()
00166 {
00167 const NetworkClientInfo *ci;
00168 byte count = 0;
00169
00170 FOR_ALL_CLIENT_INFOS(ci) {
00171 if (ci->client_playas == COMPANY_SPECTATOR) count++;
00172 }
00173
00174
00175 if (_network_dedicated) count--;
00176
00177 return count;
00178 }
00179
00185 bool NetworkCompanyIsPassworded(CompanyID company_id)
00186 {
00187 return HasBit(_network_company_passworded, company_id);
00188 }
00189
00190
00191
00192
00193 void NetworkTextMessage(NetworkAction action, ConsoleColour colour, bool self_send, const char *name, const char *str, int64 data)
00194 {
00195 const int duration = 10;
00196
00197 StringID strid;
00198 switch (action) {
00199 case NETWORK_ACTION_SERVER_MESSAGE:
00200
00201 if (data >= NETWORK_SERVER_MESSAGE_END) return;
00202
00203 strid = STR_NETWORK_SERVER_MESSAGE;
00204 colour = CC_DEFAULT;
00205 data = STR_NETWORK_SERVER_MESSAGE_GAME_PAUSED_PLAYERS + data;
00206 break;
00207 case NETWORK_ACTION_COMPANY_SPECTATOR:
00208 colour = CC_DEFAULT;
00209 strid = STR_NETWORK_CLIENT_COMPANY_SPECTATE;
00210 break;
00211 case NETWORK_ACTION_COMPANY_JOIN:
00212 colour = CC_DEFAULT;
00213 strid = STR_NETWORK_CLIENT_COMPANY_JOIN;
00214 break;
00215 case NETWORK_ACTION_COMPANY_NEW:
00216 colour = CC_DEFAULT;
00217 strid = STR_NETWORK_CLIENT_COMPANY_NEW;
00218 break;
00219 case NETWORK_ACTION_JOIN: strid = STR_NETWORK_CLIENT_JOINED; break;
00220 case NETWORK_ACTION_LEAVE: strid = STR_NETWORK_CLIENT_LEFT; break;
00221 case NETWORK_ACTION_NAME_CHANGE: strid = STR_NETWORK_NAME_CHANGE; break;
00222 case NETWORK_ACTION_GIVE_MONEY: strid = self_send ? STR_NETWORK_GAVE_MONEY_AWAY : STR_NETWORK_GIVE_MONEY; break;
00223 case NETWORK_ACTION_CHAT_COMPANY: strid = self_send ? STR_NETWORK_CHAT_TO_COMPANY : STR_NETWORK_CHAT_COMPANY; break;
00224 case NETWORK_ACTION_CHAT_CLIENT: strid = self_send ? STR_NETWORK_CHAT_TO_CLIENT : STR_NETWORK_CHAT_CLIENT; break;
00225 default: strid = STR_NETWORK_CHAT_ALL; break;
00226 }
00227
00228 char message[1024];
00229 SetDParamStr(0, name);
00230 SetDParamStr(1, str);
00231 SetDParam(2, data);
00232 GetString(message, strid, lastof(message));
00233
00234 DEBUG(desync, 1, "msg: %d; %d; %s\n", _date, _date_fract, message);
00235 IConsolePrintF(colour, "%s", message);
00236 NetworkAddChatMessage((TextColour)colour, duration, "%s", message);
00237 }
00238
00239
00240 uint NetworkCalculateLag(const NetworkClientSocket *cs)
00241 {
00242 int lag = cs->last_frame_server - cs->last_frame;
00243
00244
00245
00246 if (cs->last_frame_server + DAY_TICKS + _settings_client.network.frame_freq < _frame_counter)
00247 lag += _frame_counter - (cs->last_frame_server + DAY_TICKS + _settings_client.network.frame_freq);
00248
00249 return lag;
00250 }
00251
00252
00253
00254
00255 static void NetworkError(StringID error_string)
00256 {
00257 _switch_mode = SM_MENU;
00258 extern StringID _switch_mode_errorstr;
00259 _switch_mode_errorstr = error_string;
00260 }
00261
00262 static void ServerStartError(const char *error)
00263 {
00264 DEBUG(net, 0, "[server] could not start network: %s",error);
00265 NetworkError(STR_NETWORK_ERR_SERVER_START);
00266 }
00267
00268 static void NetworkClientError(NetworkRecvStatus res, NetworkClientSocket *cs)
00269 {
00270
00271
00272 NetworkErrorCode errorno;
00273
00274
00275 if (res == NETWORK_RECV_STATUS_CLOSE_QUERY) {
00276 cs->has_quit = true;
00277 NetworkCloseClient(cs);
00278 _networking = false;
00279
00280 DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);
00281 return;
00282 }
00283
00284 switch (res) {
00285 case NETWORK_RECV_STATUS_DESYNC: errorno = NETWORK_ERROR_DESYNC; break;
00286 case NETWORK_RECV_STATUS_SAVEGAME: errorno = NETWORK_ERROR_SAVEGAME_FAILED; break;
00287 case NETWORK_RECV_STATUS_NEWGRF_MISMATCH: errorno = NETWORK_ERROR_NEWGRF_MISMATCH; break;
00288 default: errorno = NETWORK_ERROR_GENERAL; break;
00289 }
00290
00291 if (res != NETWORK_RECV_STATUS_SERVER_ERROR && res != NETWORK_RECV_STATUS_SERVER_FULL &&
00292 res != NETWORK_RECV_STATUS_SERVER_BANNED) {
00293 SEND_COMMAND(PACKET_CLIENT_ERROR)(errorno);
00294 }
00295
00296 _switch_mode = SM_MENU;
00297 NetworkCloseClient(cs);
00298 _networking = false;
00299 }
00300
00306 StringID GetNetworkErrorMsg(NetworkErrorCode err)
00307 {
00308
00309
00310 static const StringID network_error_strings[] = {
00311 STR_NETWORK_ERR_CLIENT_GENERAL,
00312 STR_NETWORK_ERR_CLIENT_DESYNC,
00313 STR_NETWORK_ERR_CLIENT_SAVEGAME,
00314 STR_NETWORK_ERR_CLIENT_CONNECTION_LOST,
00315 STR_NETWORK_ERR_CLIENT_PROTOCOL_ERROR,
00316 STR_NETWORK_ERR_CLIENT_NEWGRF_MISMATCH,
00317 STR_NETWORK_ERR_CLIENT_NOT_AUTHORIZED,
00318 STR_NETWORK_ERR_CLIENT_NOT_EXPECTED,
00319 STR_NETWORK_ERR_CLIENT_WRONG_REVISION,
00320 STR_NETWORK_ERR_CLIENT_NAME_IN_USE,
00321 STR_NETWORK_ERR_CLIENT_WRONG_PASSWORD,
00322 STR_NETWORK_ERR_CLIENT_COMPANY_MISMATCH,
00323 STR_NETWORK_ERR_CLIENT_KICKED,
00324 STR_NETWORK_ERR_CLIENT_CHEATER,
00325 STR_NETWORK_ERR_CLIENT_SERVER_FULL
00326 };
00327
00328 if (err >= (ptrdiff_t)lengthof(network_error_strings)) err = NETWORK_ERROR_GENERAL;
00329
00330 return network_error_strings[err];
00331 }
00332
00338 static uint NetworkCountActiveClients()
00339 {
00340 const NetworkClientSocket *cs;
00341 uint count = 0;
00342
00343 FOR_ALL_CLIENT_SOCKETS(cs) {
00344 if (cs->status != STATUS_ACTIVE) continue;
00345 if (!IsValidCompanyID(cs->GetInfo()->client_playas)) continue;
00346 count++;
00347 }
00348
00349 return count;
00350 }
00351
00352 static bool _min_active_clients_paused = false;
00353
00354
00355 static void CheckMinActiveClients()
00356 {
00357 if (!_network_dedicated) return;
00358
00359 if (NetworkCountActiveClients() < _settings_client.network.min_active_clients) {
00360 if (_min_active_clients_paused) return;
00361
00362 _min_active_clients_paused = true;
00363 DoCommandP(0, 1, 0, CMD_PAUSE);
00364 NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "", CLIENT_ID_SERVER, NETWORK_SERVER_MESSAGE_GAME_PAUSED_PLAYERS);
00365 } else {
00366 if (!_min_active_clients_paused) return;
00367
00368 _min_active_clients_paused = false;
00369 DoCommandP(0, 0, 0, CMD_PAUSE);
00370 NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "", CLIENT_ID_SERVER, NETWORK_SERVER_MESSAGE_GAME_UNPAUSED_PLAYERS);
00371 }
00372 }
00373
00380 void ParseConnectionString(const char **company, const char **port, char *connection_string)
00381 {
00382 char *p;
00383 for (p = connection_string; *p != '\0'; p++) {
00384 switch (*p) {
00385 case '#':
00386 *company = p + 1;
00387 *p = '\0';
00388 break;
00389 case ':':
00390 *port = p + 1;
00391 *p = '\0';
00392 break;
00393 }
00394 }
00395 }
00396
00397
00398
00399 static NetworkClientSocket *NetworkAllocClient(SOCKET s)
00400 {
00401 if (_network_server) {
00402
00403 if (_network_clients_connected >= MAX_CLIENTS) return NULL;
00404 if (_network_game_info.clients_on >= _settings_client.network.max_clients) return NULL;
00405
00406
00407 _network_clients_connected++;
00408 }
00409
00410 NetworkClientSocket *cs = new NetworkClientSocket(INVALID_CLIENT_ID);
00411 cs->sock = s;
00412 cs->last_frame = _frame_counter;
00413 cs->last_frame_server = _frame_counter;
00414
00415 if (_network_server) {
00416 cs->client_id = _network_client_id++;
00417 NetworkClientInfo *ci = new NetworkClientInfo(cs->client_id);
00418 cs->SetInfo(ci);
00419 ci->client_playas = COMPANY_INACTIVE_CLIENT;
00420 ci->join_date = _date;
00421
00422 InvalidateWindow(WC_CLIENT_LIST, 0);
00423 }
00424
00425 return cs;
00426 }
00427
00428
00429 void NetworkCloseClient(NetworkClientSocket *cs)
00430 {
00431
00432
00433
00434
00435
00436
00437
00438 if (cs->sock == INVALID_SOCKET) return;
00439
00440 DEBUG(net, 1, "Closed client connection %d", cs->client_id);
00441
00442 if (!cs->has_quit && _network_server && cs->status > STATUS_INACTIVE) {
00443
00444 char client_name[NETWORK_CLIENT_NAME_LENGTH];
00445 NetworkClientSocket *new_cs;
00446
00447 NetworkGetClientName(client_name, sizeof(client_name), cs);
00448
00449 NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, client_name, NULL, STR_NETWORK_ERR_CLIENT_CONNECTION_LOST);
00450
00451
00452 FOR_ALL_CLIENT_SOCKETS(new_cs) {
00453 if (new_cs->status > STATUS_AUTH && cs != new_cs) {
00454 SEND_COMMAND(PACKET_SERVER_ERROR_QUIT)(new_cs, cs->client_id, NETWORK_ERROR_CONNECTION_LOST);
00455 }
00456 }
00457 }
00458
00459
00460 if (cs->status == STATUS_PRE_ACTIVE && _settings_client.network.pause_on_join) {
00461 DoCommandP(0, 0, 0, CMD_PAUSE);
00462 NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "", CLIENT_ID_SERVER, NETWORK_SERVER_MESSAGE_GAME_UNPAUSED_CONNECT_FAIL);
00463 }
00464
00465 if (_network_server) {
00466
00467 if (cs->status >= STATUS_AUTH) _network_game_info.clients_on--;
00468 _network_clients_connected--;
00469
00470 InvalidateWindow(WC_CLIENT_LIST, 0);
00471 }
00472
00473 delete cs->GetInfo();
00474 delete cs;
00475 }
00476
00477
00478 static void NetworkAcceptClients()
00479 {
00480 struct sockaddr_in sin;
00481 NetworkClientSocket *cs;
00482 uint i;
00483 bool banned;
00484
00485
00486 assert(_listensocket != INVALID_SOCKET);
00487
00488 for (;;) {
00489 socklen_t sin_len = sizeof(sin);
00490 SOCKET s = accept(_listensocket, (struct sockaddr*)&sin, &sin_len);
00491 if (s == INVALID_SOCKET) return;
00492
00493 SetNonBlocking(s);
00494
00495 DEBUG(net, 1, "Client connected from %s on frame %d", inet_ntoa(sin.sin_addr), _frame_counter);
00496
00497 SetNoDelay(s);
00498
00499
00500 banned = false;
00501 for (i = 0; i < lengthof(_network_ban_list); i++) {
00502 if (_network_ban_list[i] == NULL) continue;
00503
00504
00505 char *chr_cidr = strchr(_network_ban_list[i], '/');
00506 if (chr_cidr != NULL) {
00507 int cidr = atoi(chr_cidr + 1);
00508
00509
00510 if (cidr <= 0 || cidr > 32) cidr = 32;
00511
00512
00513 *chr_cidr = '\0';
00514 uint32 ban_ip = inet_addr(_network_ban_list[i]);
00515 *chr_cidr = '/';
00516
00517
00518 uint32 mask = htonl(-(1 << (32 - cidr)));
00519 if ((sin.sin_addr.s_addr & mask) == (ban_ip & mask)) banned = true;
00520 } else {
00521
00522 if (sin.sin_addr.s_addr == inet_addr(_network_ban_list[i])) banned = true;
00523 }
00524
00525 if (banned) {
00526 Packet p(PACKET_SERVER_BANNED);
00527 p.PrepareToSend();
00528
00529 DEBUG(net, 1, "Banned ip tried to join (%s), refused", _network_ban_list[i]);
00530
00531 send(s, (const char*)p.buffer, p.size, 0);
00532 closesocket(s);
00533 break;
00534 }
00535 }
00536
00537 if (banned) continue;
00538
00539 cs = NetworkAllocClient(s);
00540 if (cs == NULL) {
00541
00542
00543 Packet p(PACKET_SERVER_FULL);
00544 p.PrepareToSend();
00545
00546 send(s, (const char*)p.buffer, p.size, 0);
00547 closesocket(s);
00548
00549 continue;
00550 }
00551
00552
00553
00554
00555 cs->status = STATUS_INACTIVE;
00556
00557 cs->GetInfo()->client_ip = sin.sin_addr.s_addr;
00558 }
00559 }
00560
00561
00562 static bool NetworkListen()
00563 {
00564 SOCKET ls;
00565 struct sockaddr_in sin;
00566
00567 DEBUG(net, 1, "Listening on %s:%d", _settings_client.network.server_bind_ip, _settings_client.network.server_port);
00568
00569 ls = socket(AF_INET, SOCK_STREAM, 0);
00570 if (ls == INVALID_SOCKET) {
00571 ServerStartError("socket() on listen socket failed");
00572 return false;
00573 }
00574
00575 {
00576 int reuse = 1;
00577
00578 if (setsockopt(ls, SOL_SOCKET, SO_REUSEADDR, (const char*)&reuse, sizeof(reuse)) == -1) {
00579 ServerStartError("setsockopt() on listen socket failed");
00580 return false;
00581 }
00582 }
00583
00584 if (!SetNonBlocking(ls)) DEBUG(net, 0, "Setting non-blocking mode failed");
00585
00586 sin.sin_family = AF_INET;
00587 sin.sin_addr.s_addr = _network_server_bind_ip;
00588 sin.sin_port = htons(_settings_client.network.server_port);
00589
00590 if (bind(ls, (struct sockaddr*)&sin, sizeof(sin)) != 0) {
00591 ServerStartError("bind() failed");
00592 return false;
00593 }
00594
00595 if (listen(ls, 1) != 0) {
00596 ServerStartError("listen() failed");
00597 return false;
00598 }
00599
00600 _listensocket = ls;
00601
00602 return true;
00603 }
00604
00606 static void InitializeNetworkPools()
00607 {
00608 _NetworkClientSocket_pool.CleanPool();
00609 _NetworkClientSocket_pool.AddBlockToPool();
00610 _NetworkClientInfo_pool.CleanPool();
00611 _NetworkClientInfo_pool.AddBlockToPool();
00612 }
00613
00614
00615 static void NetworkClose()
00616 {
00617 NetworkClientSocket *cs;
00618
00619 FOR_ALL_CLIENT_SOCKETS(cs) {
00620 if (!_network_server) {
00621 SEND_COMMAND(PACKET_CLIENT_QUIT)();
00622 cs->Send_Packets();
00623 }
00624 NetworkCloseClient(cs);
00625 }
00626
00627 if (_network_server) {
00628
00629 closesocket(_listensocket);
00630 _listensocket = INVALID_SOCKET;
00631 DEBUG(net, 1, "[tcp] closed listeners");
00632 }
00633 NetworkUDPCloseAll();
00634
00635 TCPConnecter::KillAll();
00636
00637 _networking = false;
00638 _network_server = false;
00639
00640 NetworkFreeLocalCommandQueue();
00641
00642 free(_network_company_states);
00643 _network_company_states = NULL;
00644
00645 InitializeNetworkPools();
00646 }
00647
00648
00649 static void NetworkInitialize()
00650 {
00651 InitializeNetworkPools();
00652
00653 _sync_frame = 0;
00654 _network_first_time = true;
00655
00656 _network_reconnect = 0;
00657 }
00658
00660 class TCPQueryConnecter : TCPConnecter {
00661 public:
00662 TCPQueryConnecter(const NetworkAddress &address) : TCPConnecter(address) {}
00663
00664 virtual void OnFailure()
00665 {
00666 NetworkDisconnect();
00667 }
00668
00669 virtual void OnConnect(SOCKET s)
00670 {
00671 _networking = true;
00672 NetworkAllocClient(s);
00673 SEND_COMMAND(PACKET_CLIENT_COMPANY_INFO)();
00674 }
00675 };
00676
00677
00678
00679
00680 void NetworkTCPQueryServer(NetworkAddress address)
00681 {
00682 if (!_network_available) return;
00683
00684 NetworkDisconnect();
00685 NetworkInitialize();
00686
00687 new TCPQueryConnecter(address);
00688 }
00689
00690
00691
00692
00693 void NetworkAddServer(const char *b)
00694 {
00695 if (*b != '\0') {
00696 const char *port = NULL;
00697 const char *company = NULL;
00698 char host[NETWORK_HOSTNAME_LENGTH];
00699 uint16 rport;
00700
00701 strecpy(host, b, lastof(host));
00702
00703 strecpy(_settings_client.network.connect_to_ip, b, lastof(_settings_client.network.connect_to_ip));
00704 rport = NETWORK_DEFAULT_PORT;
00705
00706 ParseConnectionString(&company, &port, host);
00707 if (port != NULL) rport = atoi(port);
00708
00709 NetworkUDPQueryServer(NetworkAddress(host, rport), true);
00710 }
00711 }
00712
00713
00714
00715
00716 void NetworkRebuildHostList()
00717 {
00718 uint i = 0;
00719 const NetworkGameList *item = _network_game_list;
00720 while (item != NULL && i != lengthof(_network_host_list)) {
00721 if (item->manually) {
00722 free(_network_host_list[i]);
00723 _network_host_list[i++] = str_fmt("%s:%i", item->info.hostname, item->port);
00724 }
00725 item = item->next;
00726 }
00727
00728 for (; i < lengthof(_network_host_list); i++) {
00729 free(_network_host_list[i]);
00730 _network_host_list[i] = NULL;
00731 }
00732 }
00733
00735 class TCPClientConnecter : TCPConnecter {
00736 public:
00737 TCPClientConnecter(const NetworkAddress &address) : TCPConnecter(address) {}
00738
00739 virtual void OnFailure()
00740 {
00741 NetworkError(STR_NETWORK_ERR_NOCONNECTION);
00742 }
00743
00744 virtual void OnConnect(SOCKET s)
00745 {
00746 _networking = true;
00747 NetworkAllocClient(s);
00748 IConsoleCmdExec("exec scripts/on_client.scr 0");
00749 NetworkClient_Connected();
00750 }
00751 };
00752
00753
00754
00755 void NetworkClientConnectGame(NetworkAddress address)
00756 {
00757 if (!_network_available) return;
00758
00759 if (address.GetPort() == 0) return;
00760
00761 strecpy(_settings_client.network.last_host, address.GetHostname(), lastof(_settings_client.network.last_host));
00762 _settings_client.network.last_port = address.GetPort();
00763
00764 NetworkDisconnect();
00765 NetworkInitialize();
00766
00767 _network_join_status = NETWORK_JOIN_STATUS_CONNECTING;
00768 ShowJoinStatusWindow();
00769
00770 new TCPClientConnecter(address);
00771 }
00772
00773 static void NetworkInitGameInfo()
00774 {
00775 if (StrEmpty(_settings_client.network.server_name)) {
00776 snprintf(_settings_client.network.server_name, sizeof(_settings_client.network.server_name), "Unnamed Server");
00777 }
00778
00779
00780 _network_game_info.clients_on = _network_dedicated ? 0 : 1;
00781
00782 NetworkClientInfo *ci = new NetworkClientInfo(CLIENT_ID_SERVER);
00783 ci->client_playas = _network_dedicated ? COMPANY_SPECTATOR : _local_company;
00784
00785 strecpy(ci->client_name, _settings_client.network.client_name, lastof(ci->client_name));
00786 strecpy(ci->unique_id, _settings_client.network.network_id, lastof(ci->unique_id));
00787 }
00788
00789 bool NetworkServerStart()
00790 {
00791 if (!_network_available) return false;
00792
00793
00794 IConsoleCmdExec("exec scripts/pre_server.scr 0");
00795 if (_network_dedicated) IConsoleCmdExec("exec scripts/pre_dedicated.scr 0");
00796
00797 NetworkInitialize();
00798 if (!NetworkListen()) return false;
00799
00800
00801 _network_udp_server = true;
00802 _network_udp_server = _udp_server_socket->Listen(_network_server_bind_ip, _settings_client.network.server_port, false);
00803
00804 _network_company_states = CallocT<NetworkCompanyState>(MAX_COMPANIES);
00805 _network_server = true;
00806 _networking = true;
00807 _frame_counter = 0;
00808 _frame_counter_server = 0;
00809 _frame_counter_max = 0;
00810 _last_sync_frame = 0;
00811 _network_own_client_id = CLIENT_ID_SERVER;
00812
00813
00814 if (!_network_dedicated) _network_playas = COMPANY_FIRST;
00815
00816 _network_clients_connected = 0;
00817
00818 NetworkInitGameInfo();
00819
00820
00821 IConsoleCmdExec("exec scripts/on_server.scr 0");
00822
00823 if (_network_dedicated) IConsoleCmdExec("exec scripts/on_dedicated.scr 0");
00824
00825 _min_active_clients_paused = false;
00826
00827
00828 _network_last_advertise_frame = 0;
00829 _network_need_advertise = true;
00830 NetworkUDPAdvertise();
00831 return true;
00832 }
00833
00834
00835
00836 void NetworkReboot()
00837 {
00838 if (_network_server) {
00839 NetworkClientSocket *cs;
00840 FOR_ALL_CLIENT_SOCKETS(cs) {
00841 SEND_COMMAND(PACKET_SERVER_NEWGAME)(cs);
00842 cs->Send_Packets();
00843 }
00844 }
00845
00846 NetworkClose();
00847 }
00848
00853 void NetworkDisconnect(bool blocking)
00854 {
00855 if (_network_server) {
00856 NetworkClientSocket *cs;
00857 FOR_ALL_CLIENT_SOCKETS(cs) {
00858 SEND_COMMAND(PACKET_SERVER_SHUTDOWN)(cs);
00859 cs->Send_Packets();
00860 }
00861 }
00862
00863 if (_settings_client.network.server_advertise) NetworkUDPRemoveAdvertise(blocking);
00864
00865 DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);
00866
00867 NetworkClose();
00868 }
00869
00870
00871 static bool NetworkReceive()
00872 {
00873 NetworkClientSocket *cs;
00874 int n;
00875 fd_set read_fd, write_fd;
00876 struct timeval tv;
00877
00878 FD_ZERO(&read_fd);
00879 FD_ZERO(&write_fd);
00880
00881 FOR_ALL_CLIENT_SOCKETS(cs) {
00882 FD_SET(cs->sock, &read_fd);
00883 FD_SET(cs->sock, &write_fd);
00884 }
00885
00886
00887 if (_network_server) FD_SET(_listensocket, &read_fd);
00888
00889 tv.tv_sec = tv.tv_usec = 0;
00890 #if !defined(__MORPHOS__) && !defined(__AMIGA__)
00891 n = select(FD_SETSIZE, &read_fd, &write_fd, NULL, &tv);
00892 #else
00893 n = WaitSelect(FD_SETSIZE, &read_fd, &write_fd, NULL, &tv, NULL);
00894 #endif
00895 if (n == -1 && !_network_server) NetworkError(STR_NETWORK_ERR_LOSTCONNECTION);
00896
00897
00898 if (_network_server && FD_ISSET(_listensocket, &read_fd)) NetworkAcceptClients();
00899
00900
00901 FOR_ALL_CLIENT_SOCKETS(cs) {
00902 cs->writable = !!FD_ISSET(cs->sock, &write_fd);
00903 if (FD_ISSET(cs->sock, &read_fd)) {
00904 if (_network_server) {
00905 NetworkServer_ReadPackets(cs);
00906 } else {
00907 NetworkRecvStatus res;
00908
00909
00910 if (cs->has_quit) return false;
00911
00912 res = NetworkClient_ReadPackets(cs);
00913 if (res != NETWORK_RECV_STATUS_OKAY) {
00914
00915
00916 NetworkClientError(res, cs);
00917 return false;
00918 }
00919 }
00920 }
00921 }
00922 return true;
00923 }
00924
00925
00926 static void NetworkSend()
00927 {
00928 NetworkClientSocket *cs;
00929 FOR_ALL_CLIENT_SOCKETS(cs) {
00930 if (cs->writable) {
00931 cs->Send_Packets();
00932
00933 if (cs->status == STATUS_MAP) {
00934
00935 SEND_COMMAND(PACKET_SERVER_MAP)(cs);
00936 }
00937 }
00938 }
00939 }
00940
00941 static bool NetworkDoClientLoop()
00942 {
00943 _frame_counter++;
00944
00945 NetworkExecuteLocalCommandQueue();
00946
00947 StateGameLoop();
00948
00949
00950 if (_sync_frame != 0) {
00951 if (_sync_frame == _frame_counter) {
00952 #ifdef NETWORK_SEND_DOUBLE_SEED
00953 if (_sync_seed_1 != _random.state[0] || _sync_seed_2 != _random.state[1]) {
00954 #else
00955 if (_sync_seed_1 != _random.state[0]) {
00956 #endif
00957 NetworkError(STR_NETWORK_ERR_DESYNC);
00958 DEBUG(desync, 1, "sync_err: %d; %d\n", _date, _date_fract);
00959 DEBUG(net, 0, "Sync error detected!");
00960 NetworkClientError(NETWORK_RECV_STATUS_DESYNC, GetNetworkClientSocket(0));
00961 return false;
00962 }
00963
00964
00965
00966
00967 if (_network_first_time) {
00968 _network_first_time = false;
00969 SEND_COMMAND(PACKET_CLIENT_ACK)();
00970 }
00971
00972 _sync_frame = 0;
00973 } else if (_sync_frame < _frame_counter) {
00974 DEBUG(net, 1, "Missed frame for sync-test (%d / %d)", _sync_frame, _frame_counter);
00975 _sync_frame = 0;
00976 }
00977 }
00978
00979 return true;
00980 }
00981
00982
00983 void NetworkUDPGameLoop()
00984 {
00985 _network_content_client.SendReceive();
00986 TCPConnecter::CheckCallbacks();
00987
00988 if (_network_udp_server) {
00989 _udp_server_socket->ReceivePackets();
00990 _udp_master_socket->ReceivePackets();
00991 } else {
00992 _udp_client_socket->ReceivePackets();
00993 if (_network_udp_broadcast > 0) _network_udp_broadcast--;
00994 NetworkGameListRequery();
00995 }
00996 }
00997
00998
00999
01000 void NetworkGameLoop()
01001 {
01002 if (!_networking) return;
01003
01004 if (!NetworkReceive()) return;
01005
01006 if (_network_server) {
01007 #ifdef DEBUG_DUMP_COMMANDS
01008 static FILE *f = FioFOpenFile("commands.log", "rb", SAVE_DIR);
01009 static Date next_date = 0;
01010 static uint32 next_date_fract;
01011 static CommandPacket *cp = NULL;
01012 if (f == NULL && next_date == 0) {
01013 printf("Cannot open commands.log\n");
01014 next_date = 1;
01015 }
01016
01017 while (f != NULL && !feof(f)) {
01018 if (cp != NULL && _date == next_date && _date_fract == next_date_fract) {
01019 _current_company = cp->company;
01020 DoCommandP(cp->tile, cp->p1, cp->p2, cp->cmd, NULL, cp->text);
01021 free(cp);
01022 cp = NULL;
01023 }
01024
01025 if (cp != NULL) break;
01026
01027 char buff[4096];
01028 if (fgets(buff, lengthof(buff), f) == NULL) break;
01029 if (strncmp(buff, "cmd: ", 8) != 0) continue;
01030 cp = MallocT<CommandPacket>(1);
01031 int company;
01032 sscanf(&buff[8], "%d; %d; %d; %d; %d; %d; %d; %s", &next_date, &next_date_fract, &company, &cp->tile, &cp->p1, &cp->p2, &cp->cmd, cp->text);
01033 cp->company = (CompanyID)company;
01034 }
01035 #endif
01036 CheckMinActiveClients();
01037
01038 bool send_frame = false;
01039
01040
01041 _frame_counter++;
01042
01043 if (_frame_counter > _frame_counter_max) {
01044 _frame_counter_max = _frame_counter + _settings_client.network.frame_freq;
01045 send_frame = true;
01046 }
01047
01048 NetworkExecuteLocalCommandQueue();
01049
01050
01051 StateGameLoop();
01052
01053 _sync_seed_1 = _random.state[0];
01054 #ifdef NETWORK_SEND_DOUBLE_SEED
01055 _sync_seed_2 = _random.state[1];
01056 #endif
01057
01058 NetworkServer_Tick(send_frame);
01059 } else {
01060
01061
01062
01063 if (_frame_counter_server > _frame_counter) {
01064 while (_frame_counter_server > _frame_counter) {
01065 if (!NetworkDoClientLoop()) break;
01066 }
01067 } else {
01068
01069 if (_frame_counter_max > _frame_counter) NetworkDoClientLoop();
01070 }
01071 }
01072
01073 NetworkSend();
01074 }
01075
01076 static void NetworkGenerateUniqueId()
01077 {
01078 Md5 checksum;
01079 uint8 digest[16];
01080 char hex_output[16 * 2 + 1];
01081 char coding_string[NETWORK_NAME_LENGTH];
01082 int di;
01083
01084 snprintf(coding_string, sizeof(coding_string), "%d%s", (uint)Random(), "OpenTTD Unique ID");
01085
01086
01087 checksum.Append((const uint8*)coding_string, strlen(coding_string));
01088 checksum.Finish(digest);
01089
01090 for (di = 0; di < 16; ++di)
01091 sprintf(hex_output + di * 2, "%02x", digest[di]);
01092
01093
01094 snprintf(_settings_client.network.network_id, sizeof(_settings_client.network.network_id), "%s", hex_output);
01095 }
01096
01097 void NetworkStartDebugLog(NetworkAddress address)
01098 {
01099 extern SOCKET _debug_socket;
01100 SOCKET s;
01101 struct sockaddr_in sin;
01102
01103 DEBUG(net, 0, "Redirecting DEBUG() to %s:%d", address.GetHostname(), address.GetPort());
01104
01105 s = socket(AF_INET, SOCK_STREAM, 0);
01106 if (s == INVALID_SOCKET) {
01107 DEBUG(net, 0, "Failed to open socket for redirection DEBUG()");
01108 return;
01109 }
01110
01111 if (!SetNoDelay(s)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
01112
01113 sin.sin_family = AF_INET;
01114 sin.sin_addr.s_addr = address.GetIP();
01115 sin.sin_port = htons(address.GetPort());
01116
01117 if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) != 0) {
01118 DEBUG(net, 0, "Failed to redirection DEBUG() to %s:%d", address.GetHostname(), address.GetPort());
01119 return;
01120 }
01121
01122 if (!SetNonBlocking(s)) DEBUG(net, 0, "Setting non-blocking mode failed");
01123 _debug_socket = s;
01124
01125 DEBUG(net, 0, "DEBUG() is now redirected");
01126 }
01127
01129 void NetworkStartUp()
01130 {
01131 DEBUG(net, 3, "[core] starting network...");
01132
01133
01134 _network_available = NetworkCoreInitialize();;
01135 _network_dedicated = false;
01136 _network_last_advertise_frame = 0;
01137 _network_need_advertise = true;
01138 _network_advertise_retries = 0;
01139
01140
01141 _network_server_bind_ip = inet_addr(_settings_client.network.server_bind_ip);
01142
01143 snprintf(_settings_client.network.server_bind_ip, sizeof(_settings_client.network.server_bind_ip), "%s", inet_ntoa(*(struct in_addr *)&_network_server_bind_ip));
01144
01145
01146 if (StrEmpty(_settings_client.network.network_id)) NetworkGenerateUniqueId();
01147
01148 memset(&_network_game_info, 0, sizeof(_network_game_info));
01149
01150 NetworkUDPInitialize();
01151 NetworkInitialize();
01152 DEBUG(net, 3, "[core] network online, multiplayer available");
01153 NetworkFindBroadcastIPs(_broadcast_list, MAX_INTERFACES);
01154 }
01155
01157 void NetworkShutDown()
01158 {
01159 NetworkDisconnect(true);
01160 NetworkUDPShutdown();
01161
01162 DEBUG(net, 3, "[core] shutting down network");
01163
01164 _network_available = false;
01165
01166 NetworkCoreShutdown();
01167 }
01168
01173 bool IsNetworkCompatibleVersion(const char *other)
01174 {
01175 return strncmp(_openttd_revision, other, NETWORK_REVISION_LENGTH - 1) == 0;
01176 }
01177
01178 #endif
01179
01180
01181 CompanyID _network_playas;