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00012 #include "../stdafx.h"
00013
00014 #ifdef ENABLE_NETWORK
00015
00016 #include "../strings_func.h"
00017 #include "../command_func.h"
00018 #include "../date_func.h"
00019 #include "network_admin.h"
00020 #include "network_client.h"
00021 #include "network_server.h"
00022 #include "network_content.h"
00023 #include "network_udp.h"
00024 #include "network_gamelist.h"
00025 #include "network_base.h"
00026 #include "core/udp.h"
00027 #include "core/host.h"
00028 #include "network_gui.h"
00029 #include "../console_func.h"
00030 #include "../3rdparty/md5/md5.h"
00031 #include "../core/random_func.hpp"
00032 #include "../window_func.h"
00033 #include "../company_func.h"
00034 #include "../company_base.h"
00035 #include "../landscape_type.h"
00036 #include "../rev.h"
00037 #include "../core/pool_func.hpp"
00038 #include "../gfx_func.h"
00039 #include "../error.h"
00040
00041 #ifdef DEBUG_DUMP_COMMANDS
00042 #include "../fileio_func.h"
00044 bool _ddc_fastforward = true;
00045 #endif
00046
00048 assert_compile(NetworkClientInfoPool::MAX_SIZE == NetworkClientSocketPool::MAX_SIZE);
00049
00051 NetworkClientInfoPool _networkclientinfo_pool("NetworkClientInfo");
00052 INSTANTIATE_POOL_METHODS(NetworkClientInfo)
00053
00054 bool _networking;
00055 bool _network_server;
00056 bool _network_available;
00057 bool _network_dedicated;
00058 bool _is_network_server;
00059 NetworkServerGameInfo _network_game_info;
00060 NetworkCompanyState *_network_company_states = NULL;
00061 ClientID _network_own_client_id;
00062 ClientID _redirect_console_to_client;
00063 bool _network_need_advertise;
00064 uint32 _network_last_advertise_frame;
00065 uint8 _network_reconnect;
00066 StringList _network_bind_list;
00067 StringList _network_host_list;
00068 StringList _network_ban_list;
00069 uint32 _frame_counter_server;
00070 uint32 _frame_counter_max;
00071 uint32 _frame_counter;
00072 uint32 _last_sync_frame;
00073 NetworkAddressList _broadcast_list;
00074 uint32 _sync_seed_1;
00075 #ifdef NETWORK_SEND_DOUBLE_SEED
00076 uint32 _sync_seed_2;
00077 #endif
00078 uint32 _sync_frame;
00079 bool _network_first_time;
00080 bool _network_udp_server;
00081 uint16 _network_udp_broadcast;
00082 uint8 _network_advertise_retries;
00083 CompanyMask _network_company_passworded;
00084
00085
00086 assert_compile((int)NETWORK_NUM_LANDSCAPES == (int)NUM_LANDSCAPE);
00087 assert_compile((int)NETWORK_COMPANY_NAME_LENGTH == MAX_LENGTH_COMPANY_NAME_CHARS * MAX_CHAR_LENGTH);
00088
00089 extern NetworkUDPSocketHandler *_udp_client_socket;
00090 extern NetworkUDPSocketHandler *_udp_server_socket;
00091 extern NetworkUDPSocketHandler *_udp_master_socket;
00092
00094 byte _network_clients_connected = 0;
00095
00096
00097 extern void StateGameLoop();
00098
00102 NetworkClientInfo::~NetworkClientInfo()
00103 {
00104
00105 InvalidateWindowData(WC_SEND_NETWORK_MSG, DESTTYPE_CLIENT, this->client_id);
00106 }
00107
00113 NetworkClientInfo *NetworkClientInfo::GetByClientID(ClientID client_id)
00114 {
00115 NetworkClientInfo *ci;
00116
00117 FOR_ALL_CLIENT_INFOS(ci) {
00118 if (ci->client_id == client_id) return ci;
00119 }
00120
00121 return NULL;
00122 }
00123
00129 ServerNetworkGameSocketHandler *ServerNetworkGameSocketHandler::GetByClientID(ClientID client_id)
00130 {
00131 NetworkClientSocket *cs;
00132
00133 FOR_ALL_CLIENT_SOCKETS(cs) {
00134 if (cs->client_id == client_id) return cs;
00135 }
00136
00137 return NULL;
00138 }
00139
00140 byte NetworkSpectatorCount()
00141 {
00142 const NetworkClientInfo *ci;
00143 byte count = 0;
00144
00145 FOR_ALL_CLIENT_INFOS(ci) {
00146 if (ci->client_playas == COMPANY_SPECTATOR) count++;
00147 }
00148
00149
00150 if (_network_dedicated) count--;
00151
00152 return count;
00153 }
00154
00161 const char *NetworkChangeCompanyPassword(CompanyID company_id, const char *password)
00162 {
00163 if (strcmp(password, "*") == 0) password = "";
00164
00165 if (_network_server) {
00166 NetworkServerSetCompanyPassword(company_id, password, false);
00167 } else {
00168 NetworkClientSetCompanyPassword(password);
00169 }
00170
00171 return password;
00172 }
00173
00181 const char *GenerateCompanyPasswordHash(const char *password, const char *password_server_id, uint32 password_game_seed)
00182 {
00183 if (StrEmpty(password)) return password;
00184
00185 char salted_password[NETWORK_SERVER_ID_LENGTH];
00186
00187 memset(salted_password, 0, sizeof(salted_password));
00188 snprintf(salted_password, sizeof(salted_password), "%s", password);
00189
00190 for (uint i = 0; i < NETWORK_SERVER_ID_LENGTH - 1; i++) {
00191 salted_password[i] ^= password_server_id[i] ^ (password_game_seed >> (i % 32));
00192 }
00193
00194 Md5 checksum;
00195 uint8 digest[16];
00196 static char hashed_password[NETWORK_SERVER_ID_LENGTH];
00197
00198
00199 checksum.Append(salted_password, sizeof(salted_password) - 1);
00200 checksum.Finish(digest);
00201
00202 for (int di = 0; di < 16; di++) sprintf(hashed_password + di * 2, "%02x", digest[di]);
00203 hashed_password[lengthof(hashed_password) - 1] = '\0';
00204
00205 return hashed_password;
00206 }
00207
00213 bool NetworkCompanyIsPassworded(CompanyID company_id)
00214 {
00215 return HasBit(_network_company_passworded, company_id);
00216 }
00217
00218
00219
00220
00221 void NetworkTextMessage(NetworkAction action, TextColour colour, bool self_send, const char *name, const char *str, int64 data)
00222 {
00223 StringID strid;
00224 switch (action) {
00225 case NETWORK_ACTION_SERVER_MESSAGE:
00226
00227 strid = STR_NETWORK_SERVER_MESSAGE;
00228 colour = CC_DEFAULT;
00229 break;
00230 case NETWORK_ACTION_COMPANY_SPECTATOR:
00231 colour = CC_DEFAULT;
00232 strid = STR_NETWORK_MESSAGE_CLIENT_COMPANY_SPECTATE;
00233 break;
00234 case NETWORK_ACTION_COMPANY_JOIN:
00235 colour = CC_DEFAULT;
00236 strid = STR_NETWORK_MESSAGE_CLIENT_COMPANY_JOIN;
00237 break;
00238 case NETWORK_ACTION_COMPANY_NEW:
00239 colour = CC_DEFAULT;
00240 strid = STR_NETWORK_MESSAGE_CLIENT_COMPANY_NEW;
00241 break;
00242 case NETWORK_ACTION_JOIN:
00243
00244 strid = _network_server ? STR_NETWORK_MESSAGE_CLIENT_JOINED_ID : STR_NETWORK_MESSAGE_CLIENT_JOINED;
00245 break;
00246 case NETWORK_ACTION_LEAVE: strid = STR_NETWORK_MESSAGE_CLIENT_LEFT; break;
00247 case NETWORK_ACTION_NAME_CHANGE: strid = STR_NETWORK_MESSAGE_NAME_CHANGE; break;
00248 case NETWORK_ACTION_GIVE_MONEY: strid = self_send ? STR_NETWORK_MESSAGE_GAVE_MONEY_AWAY : STR_NETWORK_MESSAGE_GIVE_MONEY; break;
00249 case NETWORK_ACTION_CHAT_COMPANY: strid = self_send ? STR_NETWORK_CHAT_TO_COMPANY : STR_NETWORK_CHAT_COMPANY; break;
00250 case NETWORK_ACTION_CHAT_CLIENT: strid = self_send ? STR_NETWORK_CHAT_TO_CLIENT : STR_NETWORK_CHAT_CLIENT; break;
00251 default: strid = STR_NETWORK_CHAT_ALL; break;
00252 }
00253
00254 char message[1024];
00255 SetDParamStr(0, name);
00256 SetDParamStr(1, str);
00257 SetDParam(2, data);
00258
00259
00260
00261
00262
00263 char *msg_ptr = message + Utf8Encode(message, _current_text_dir == TD_LTR ? CHAR_TD_LRM : CHAR_TD_RLM);
00264 GetString(msg_ptr, strid, lastof(message));
00265
00266 DEBUG(desync, 1, "msg: %08x; %02x; %s", _date, _date_fract, message);
00267 IConsolePrintF(colour, "%s", message);
00268 NetworkAddChatMessage((TextColour)colour, _settings_client.gui.network_chat_timeout, "%s", message);
00269 }
00270
00271
00272 uint NetworkCalculateLag(const NetworkClientSocket *cs)
00273 {
00274 int lag = cs->last_frame_server - cs->last_frame;
00275
00276
00277
00278 if (cs->last_frame_server + DAY_TICKS + _settings_client.network.frame_freq < _frame_counter) {
00279 lag += _frame_counter - (cs->last_frame_server + DAY_TICKS + _settings_client.network.frame_freq);
00280 }
00281 return lag;
00282 }
00283
00284
00285
00286
00287 void NetworkError(StringID error_string)
00288 {
00289 _switch_mode = SM_MENU;
00290 ShowErrorMessage(error_string, INVALID_STRING_ID, WL_CRITICAL);
00291 }
00292
00298 StringID GetNetworkErrorMsg(NetworkErrorCode err)
00299 {
00300
00301
00302 static const StringID network_error_strings[] = {
00303 STR_NETWORK_ERROR_CLIENT_GENERAL,
00304 STR_NETWORK_ERROR_CLIENT_DESYNC,
00305 STR_NETWORK_ERROR_CLIENT_SAVEGAME,
00306 STR_NETWORK_ERROR_CLIENT_CONNECTION_LOST,
00307 STR_NETWORK_ERROR_CLIENT_PROTOCOL_ERROR,
00308 STR_NETWORK_ERROR_CLIENT_NEWGRF_MISMATCH,
00309 STR_NETWORK_ERROR_CLIENT_NOT_AUTHORIZED,
00310 STR_NETWORK_ERROR_CLIENT_NOT_EXPECTED,
00311 STR_NETWORK_ERROR_CLIENT_WRONG_REVISION,
00312 STR_NETWORK_ERROR_CLIENT_NAME_IN_USE,
00313 STR_NETWORK_ERROR_CLIENT_WRONG_PASSWORD,
00314 STR_NETWORK_ERROR_CLIENT_COMPANY_MISMATCH,
00315 STR_NETWORK_ERROR_CLIENT_KICKED,
00316 STR_NETWORK_ERROR_CLIENT_CHEATER,
00317 STR_NETWORK_ERROR_CLIENT_SERVER_FULL,
00318 STR_NETWORK_ERROR_CLIENT_TOO_MANY_COMMANDS
00319 };
00320
00321 if (err >= (ptrdiff_t)lengthof(network_error_strings)) err = NETWORK_ERROR_GENERAL;
00322
00323 return network_error_strings[err];
00324 }
00325
00331 void NetworkHandlePauseChange(PauseMode prev_mode, PauseMode changed_mode)
00332 {
00333 if (!_networking) return;
00334
00335 switch (changed_mode) {
00336 case PM_PAUSED_NORMAL:
00337 case PM_PAUSED_JOIN:
00338 case PM_PAUSED_GAME_SCRIPT:
00339 case PM_PAUSED_ACTIVE_CLIENTS: {
00340 bool changed = ((_pause_mode == PM_UNPAUSED) != (prev_mode == PM_UNPAUSED));
00341 bool paused = (_pause_mode != PM_UNPAUSED);
00342 if (!paused && !changed) return;
00343
00344 StringID str;
00345 if (!changed) {
00346 int i = -1;
00347
00348 if ((_pause_mode & PM_PAUSED_NORMAL) != PM_UNPAUSED) SetDParam(++i, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_MANUAL);
00349 if ((_pause_mode & PM_PAUSED_JOIN) != PM_UNPAUSED) SetDParam(++i, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_CONNECTING_CLIENTS);
00350 if ((_pause_mode & PM_PAUSED_GAME_SCRIPT) != PM_UNPAUSED) SetDParam(++i, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_GAME_SCRIPT);
00351 if ((_pause_mode & PM_PAUSED_ACTIVE_CLIENTS) != PM_UNPAUSED) SetDParam(++i, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_NOT_ENOUGH_PLAYERS);
00352 str = STR_NETWORK_SERVER_MESSAGE_GAME_STILL_PAUSED_1 + i;
00353 } else {
00354 switch (changed_mode) {
00355 case PM_PAUSED_NORMAL: SetDParam(0, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_MANUAL); break;
00356 case PM_PAUSED_JOIN: SetDParam(0, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_CONNECTING_CLIENTS); break;
00357 case PM_PAUSED_GAME_SCRIPT: SetDParam(0, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_GAME_SCRIPT); break;
00358 case PM_PAUSED_ACTIVE_CLIENTS: SetDParam(0, STR_NETWORK_SERVER_MESSAGE_GAME_REASON_NOT_ENOUGH_PLAYERS); break;
00359 default: NOT_REACHED();
00360 }
00361 str = paused ? STR_NETWORK_SERVER_MESSAGE_GAME_PAUSED : STR_NETWORK_SERVER_MESSAGE_GAME_UNPAUSED;
00362 }
00363
00364 char buffer[DRAW_STRING_BUFFER];
00365 GetString(buffer, str, lastof(buffer));
00366 NetworkTextMessage(NETWORK_ACTION_SERVER_MESSAGE, CC_DEFAULT, false, NULL, buffer);
00367 break;
00368 }
00369
00370 default:
00371 return;
00372 }
00373 }
00374
00375
00384 static void CheckPauseHelper(bool pause, PauseMode pm)
00385 {
00386 if (pause == ((_pause_mode & pm) != PM_UNPAUSED)) return;
00387
00388 DoCommandP(0, pm, pause ? 1 : 0, CMD_PAUSE);
00389 }
00390
00396 static uint NetworkCountActiveClients()
00397 {
00398 const NetworkClientSocket *cs;
00399 uint count = 0;
00400
00401 FOR_ALL_CLIENT_SOCKETS(cs) {
00402 if (cs->status != NetworkClientSocket::STATUS_ACTIVE) continue;
00403 if (!Company::IsValidID(cs->GetInfo()->client_playas)) continue;
00404 count++;
00405 }
00406
00407 return count;
00408 }
00409
00413 static void CheckMinActiveClients()
00414 {
00415 if ((_pause_mode & PM_PAUSED_ERROR) != PM_UNPAUSED ||
00416 !_network_dedicated ||
00417 (_settings_client.network.min_active_clients == 0 && (_pause_mode & PM_PAUSED_ACTIVE_CLIENTS) == PM_UNPAUSED)) {
00418 return;
00419 }
00420 CheckPauseHelper(NetworkCountActiveClients() < _settings_client.network.min_active_clients, PM_PAUSED_ACTIVE_CLIENTS);
00421 }
00422
00427 static bool NetworkHasJoiningClient()
00428 {
00429 const NetworkClientSocket *cs;
00430 FOR_ALL_CLIENT_SOCKETS(cs) {
00431 if (cs->status >= NetworkClientSocket::STATUS_AUTHORIZED && cs->status < NetworkClientSocket::STATUS_ACTIVE) return true;
00432 }
00433
00434 return false;
00435 }
00436
00440 static void CheckPauseOnJoin()
00441 {
00442 if ((_pause_mode & PM_PAUSED_ERROR) != PM_UNPAUSED ||
00443 (!_settings_client.network.pause_on_join && (_pause_mode & PM_PAUSED_JOIN) == PM_UNPAUSED)) {
00444 return;
00445 }
00446 CheckPauseHelper(NetworkHasJoiningClient(), PM_PAUSED_JOIN);
00447 }
00448
00457 void ParseConnectionString(const char **company, const char **port, char *connection_string)
00458 {
00459 bool ipv6 = (strchr(connection_string, ':') != strrchr(connection_string, ':'));
00460 char *p;
00461 for (p = connection_string; *p != '\0'; p++) {
00462 switch (*p) {
00463 case '[':
00464 ipv6 = true;
00465 break;
00466
00467 case ']':
00468 ipv6 = false;
00469 break;
00470
00471 case '#':
00472 *company = p + 1;
00473 *p = '\0';
00474 break;
00475
00476 case ':':
00477 if (ipv6) break;
00478 *port = p + 1;
00479 *p = '\0';
00480 break;
00481 }
00482 }
00483 }
00484
00490 void ServerNetworkGameSocketHandler::AcceptConnection(SOCKET s, const NetworkAddress &address)
00491 {
00492
00493 _network_clients_connected++;
00494
00495 SetWindowDirty(WC_CLIENT_LIST, 0);
00496 ServerNetworkGameSocketHandler *cs = new ServerNetworkGameSocketHandler(s);
00497 cs->client_address = address;
00498 }
00499
00504 static void InitializeNetworkPools(bool close_admins = true)
00505 {
00506 PoolBase::Clean(PT_NCLIENT | (close_admins ? PT_NADMIN : PT_NONE));
00507 }
00508
00513 void NetworkClose(bool close_admins)
00514 {
00515 if (_network_server) {
00516 if (close_admins) {
00517 ServerNetworkAdminSocketHandler *as;
00518 FOR_ALL_ADMIN_SOCKETS(as) {
00519 as->CloseConnection(true);
00520 }
00521 }
00522
00523 NetworkClientSocket *cs;
00524 FOR_ALL_CLIENT_SOCKETS(cs) {
00525 cs->CloseConnection(NETWORK_RECV_STATUS_CONN_LOST);
00526 }
00527 ServerNetworkGameSocketHandler::CloseListeners();
00528 ServerNetworkAdminSocketHandler::CloseListeners();
00529 } else if (MyClient::my_client != NULL) {
00530 MyClient::SendQuit();
00531 MyClient::my_client->CloseConnection(NETWORK_RECV_STATUS_CONN_LOST);
00532 }
00533
00534 TCPConnecter::KillAll();
00535
00536 _networking = false;
00537 _network_server = false;
00538
00539 NetworkFreeLocalCommandQueue();
00540
00541 free(_network_company_states);
00542 _network_company_states = NULL;
00543
00544 InitializeNetworkPools(close_admins);
00545 }
00546
00547
00548 static void NetworkInitialize(bool close_admins = true)
00549 {
00550 InitializeNetworkPools(close_admins);
00551 NetworkUDPInitialize();
00552
00553 _sync_frame = 0;
00554 _network_first_time = true;
00555
00556 _network_reconnect = 0;
00557 }
00558
00560 class TCPQueryConnecter : TCPConnecter {
00561 public:
00562 TCPQueryConnecter(const NetworkAddress &address) : TCPConnecter(address) {}
00563
00564 virtual void OnFailure()
00565 {
00566 NetworkDisconnect();
00567 }
00568
00569 virtual void OnConnect(SOCKET s)
00570 {
00571 _networking = true;
00572 new ClientNetworkGameSocketHandler(s);
00573 MyClient::SendCompanyInformationQuery();
00574 }
00575 };
00576
00577
00578
00579
00580 void NetworkTCPQueryServer(NetworkAddress address)
00581 {
00582 if (!_network_available) return;
00583
00584 NetworkDisconnect();
00585 NetworkInitialize();
00586
00587 new TCPQueryConnecter(address);
00588 }
00589
00590
00591
00592
00593 void NetworkAddServer(const char *b)
00594 {
00595 if (*b != '\0') {
00596 const char *port = NULL;
00597 const char *company = NULL;
00598 char host[NETWORK_HOSTNAME_LENGTH];
00599 uint16 rport;
00600
00601 strecpy(host, b, lastof(host));
00602
00603 strecpy(_settings_client.network.connect_to_ip, b, lastof(_settings_client.network.connect_to_ip));
00604 rport = NETWORK_DEFAULT_PORT;
00605
00606 ParseConnectionString(&company, &port, host);
00607 if (port != NULL) rport = atoi(port);
00608
00609 NetworkUDPQueryServer(NetworkAddress(host, rport), true);
00610 }
00611 }
00612
00618 void GetBindAddresses(NetworkAddressList *addresses, uint16 port)
00619 {
00620 for (char **iter = _network_bind_list.Begin(); iter != _network_bind_list.End(); iter++) {
00621 *addresses->Append() = NetworkAddress(*iter, port);
00622 }
00623
00624
00625 if (addresses->Length() == 0) {
00626 *addresses->Append() = NetworkAddress("", port);
00627 }
00628 }
00629
00630
00631
00632
00633 void NetworkRebuildHostList()
00634 {
00635 _network_host_list.Clear();
00636
00637 for (NetworkGameList *item = _network_game_list; item != NULL; item = item->next) {
00638 if (item->manually) *_network_host_list.Append() = strdup(item->address.GetAddressAsString(false));
00639 }
00640 }
00641
00643 class TCPClientConnecter : TCPConnecter {
00644 public:
00645 TCPClientConnecter(const NetworkAddress &address) : TCPConnecter(address) {}
00646
00647 virtual void OnFailure()
00648 {
00649 NetworkError(STR_NETWORK_ERROR_NOCONNECTION);
00650 }
00651
00652 virtual void OnConnect(SOCKET s)
00653 {
00654 _networking = true;
00655 new ClientNetworkGameSocketHandler(s);
00656 IConsoleCmdExec("exec scripts/on_client.scr 0");
00657 NetworkClient_Connected();
00658 }
00659 };
00660
00661
00662
00663 void NetworkClientConnectGame(NetworkAddress address, CompanyID join_as, const char *join_server_password, const char *join_company_password)
00664 {
00665 if (!_network_available) return;
00666
00667 if (address.GetPort() == 0) return;
00668
00669 strecpy(_settings_client.network.last_host, address.GetHostname(), lastof(_settings_client.network.last_host));
00670 _settings_client.network.last_port = address.GetPort();
00671 _network_join_as = join_as;
00672 _network_join_server_password = join_server_password;
00673 _network_join_company_password = join_company_password;
00674
00675 NetworkDisconnect();
00676 NetworkInitialize();
00677
00678 _network_join_status = NETWORK_JOIN_STATUS_CONNECTING;
00679 ShowJoinStatusWindow();
00680
00681 new TCPClientConnecter(address);
00682 }
00683
00684 static void NetworkInitGameInfo()
00685 {
00686 if (StrEmpty(_settings_client.network.server_name)) {
00687 snprintf(_settings_client.network.server_name, sizeof(_settings_client.network.server_name), "Unnamed Server");
00688 }
00689
00690
00691 _network_game_info.clients_on = _network_dedicated ? 0 : 1;
00692
00693
00694 assert(NetworkClientInfo::CanAllocateItem());
00695 NetworkClientInfo *ci = new NetworkClientInfo(CLIENT_ID_SERVER);
00696 ci->client_playas = _network_dedicated ? COMPANY_SPECTATOR : _local_company;
00697
00698 strecpy(ci->client_name, _settings_client.network.client_name, lastof(ci->client_name));
00699 }
00700
00701 bool NetworkServerStart()
00702 {
00703 if (!_network_available) return false;
00704
00705
00706 IConsoleCmdExec("exec scripts/pre_server.scr 0");
00707 if (_network_dedicated) IConsoleCmdExec("exec scripts/pre_dedicated.scr 0");
00708
00709 NetworkDisconnect(false, false);
00710 NetworkInitialize(false);
00711 if (!ServerNetworkGameSocketHandler::Listen(_settings_client.network.server_port)) return false;
00712
00713
00714 if (!StrEmpty(_settings_client.network.admin_password) && !ServerNetworkAdminSocketHandler::Listen(_settings_client.network.server_admin_port)) return false;
00715
00716
00717 _network_udp_server = _udp_server_socket->Listen();
00718
00719 _network_company_states = CallocT<NetworkCompanyState>(MAX_COMPANIES);
00720 _network_server = true;
00721 _networking = true;
00722 _frame_counter = 0;
00723 _frame_counter_server = 0;
00724 _frame_counter_max = 0;
00725 _last_sync_frame = 0;
00726 _network_own_client_id = CLIENT_ID_SERVER;
00727
00728 _network_clients_connected = 0;
00729 _network_company_passworded = 0;
00730
00731 NetworkInitGameInfo();
00732
00733
00734 IConsoleCmdExec("exec scripts/on_server.scr 0");
00735
00736 if (_network_dedicated) IConsoleCmdExec("exec scripts/on_dedicated.scr 0");
00737
00738
00739 _network_last_advertise_frame = 0;
00740 _network_need_advertise = true;
00741 NetworkUDPAdvertise();
00742
00743
00744 if (_network_dedicated) ServerNetworkAdminSocketHandler::WelcomeAll();
00745
00746 return true;
00747 }
00748
00749
00750
00751 void NetworkReboot()
00752 {
00753 if (_network_server) {
00754 NetworkClientSocket *cs;
00755 FOR_ALL_CLIENT_SOCKETS(cs) {
00756 cs->SendNewGame();
00757 cs->SendPackets();
00758 }
00759
00760 ServerNetworkAdminSocketHandler *as;
00761 FOR_ALL_ACTIVE_ADMIN_SOCKETS(as) {
00762 as->SendNewGame();
00763 as->SendPackets();
00764 }
00765 }
00766
00767
00768
00769 NetworkClose(!_network_dedicated);
00770 }
00771
00777 void NetworkDisconnect(bool blocking, bool close_admins)
00778 {
00779 if (_network_server) {
00780 NetworkClientSocket *cs;
00781 FOR_ALL_CLIENT_SOCKETS(cs) {
00782 cs->SendShutdown();
00783 cs->SendPackets();
00784 }
00785
00786 if (close_admins) {
00787 ServerNetworkAdminSocketHandler *as;
00788 FOR_ALL_ACTIVE_ADMIN_SOCKETS(as) {
00789 as->SendShutdown();
00790 as->SendPackets();
00791 }
00792 }
00793 }
00794
00795 if (_settings_client.network.server_advertise) NetworkUDPRemoveAdvertise(blocking);
00796
00797 DeleteWindowById(WC_NETWORK_STATUS_WINDOW, WN_NETWORK_STATUS_WINDOW_JOIN);
00798
00799 NetworkClose(close_admins);
00800
00801
00802 NetworkUDPInitialize();
00803 }
00804
00809 static bool NetworkReceive()
00810 {
00811 if (_network_server) {
00812 ServerNetworkAdminSocketHandler::Receive();
00813 return ServerNetworkGameSocketHandler::Receive();
00814 } else {
00815 return ClientNetworkGameSocketHandler::Receive();
00816 }
00817 }
00818
00819
00820 static void NetworkSend()
00821 {
00822 if (_network_server) {
00823 ServerNetworkAdminSocketHandler::Send();
00824 ServerNetworkGameSocketHandler::Send();
00825 } else {
00826 ClientNetworkGameSocketHandler::Send();
00827 }
00828 }
00829
00835 void NetworkBackgroundLoop()
00836 {
00837 _network_content_client.SendReceive();
00838 TCPConnecter::CheckCallbacks();
00839 NetworkHTTPSocketHandler::HTTPReceive();
00840
00841 NetworkBackgroundUDPLoop();
00842 }
00843
00844
00845
00846 void NetworkGameLoop()
00847 {
00848 if (!_networking) return;
00849
00850 if (!NetworkReceive()) return;
00851
00852 if (_network_server) {
00853
00854 if (_date_fract == 0) {
00855
00856 static Date last_log;
00857 if (last_log != _date) {
00858 DEBUG(desync, 1, "sync: %08x; %02x; %08x; %08x", _date, _date_fract, _random.state[0], _random.state[1]);
00859 last_log = _date;
00860 }
00861 }
00862
00863 #ifdef DEBUG_DUMP_COMMANDS
00864
00865 static FILE *f = FioFOpenFile("commands.log", "rb", SAVE_DIR);
00866 static Date next_date = 0;
00867 static uint32 next_date_fract;
00868 static CommandPacket *cp = NULL;
00869 static bool check_sync_state = false;
00870 static uint32 sync_state[2];
00871 if (f == NULL && next_date == 0) {
00872 DEBUG(net, 0, "Cannot open commands.log");
00873 next_date = 1;
00874 }
00875
00876 while (f != NULL && !feof(f)) {
00877 if (_date == next_date && _date_fract == next_date_fract) {
00878 if (cp != NULL) {
00879 NetworkSendCommand(cp->tile, cp->p1, cp->p2, cp->cmd & ~CMD_FLAGS_MASK, NULL, cp->text, cp->company);
00880 DEBUG(net, 0, "injecting: %08x; %02x; %02x; %06x; %08x; %08x; %08x; \"%s\" (%s)", _date, _date_fract, (int)_current_company, cp->tile, cp->p1, cp->p2, cp->cmd, cp->text, GetCommandName(cp->cmd));
00881 free(cp);
00882 cp = NULL;
00883 }
00884 if (check_sync_state) {
00885 if (sync_state[0] == _random.state[0] && sync_state[1] == _random.state[1]) {
00886 DEBUG(net, 0, "sync check: %08x; %02x; match", _date, _date_fract);
00887 } else {
00888 DEBUG(net, 0, "sync check: %08x; %02x; mismatch expected {%08x, %08x}, got {%08x, %08x}",
00889 _date, _date_fract, sync_state[0], sync_state[1], _random.state[0], _random.state[1]);
00890 NOT_REACHED();
00891 }
00892 check_sync_state = false;
00893 }
00894 }
00895
00896 if (cp != NULL || check_sync_state) break;
00897
00898 char buff[4096];
00899 if (fgets(buff, lengthof(buff), f) == NULL) break;
00900
00901 char *p = buff;
00902
00903 if (*p == '[') {
00904 p = strchr(p, ']');
00905 if (p == NULL) break;
00906 p += 2;
00907 }
00908
00909 if (strncmp(p, "cmd: ", 5) == 0) {
00910 cp = CallocT<CommandPacket>(1);
00911 int company;
00912 int ret = sscanf(p + 5, "%x; %x; %x; %x; %x; %x; %x; \"%[^\"]\"", &next_date, &next_date_fract, &company, &cp->tile, &cp->p1, &cp->p2, &cp->cmd, cp->text);
00913
00914
00915
00916 assert(ret == 8 || ret == 7);
00917 cp->company = (CompanyID)company;
00918 } else if (strncmp(p, "join: ", 6) == 0) {
00919
00920 int ret = sscanf(p + 6, "%x; %x", &next_date, &next_date_fract);
00921 assert(ret == 2);
00922 DEBUG(net, 0, "injecting pause for join at %08x:%02x; please join when paused", next_date, next_date_fract);
00923 cp = CallocT<CommandPacket>(1);
00924 cp->company = COMPANY_SPECTATOR;
00925 cp->cmd = CMD_PAUSE;
00926 cp->p1 = PM_PAUSED_NORMAL;
00927 cp->p2 = 1;
00928 _ddc_fastforward = false;
00929 } else if (strncmp(p, "sync: ", 6) == 0) {
00930 int ret = sscanf(p + 6, "%x; %x; %x; %x", &next_date, &next_date_fract, &sync_state[0], &sync_state[1]);
00931 assert(ret == 4);
00932 check_sync_state = true;
00933 } else if (strncmp(p, "msg: ", 5) == 0 || strncmp(p, "client: ", 8) == 0 ||
00934 strncmp(p, "load: ", 6) == 0 || strncmp(p, "save: ", 6) == 0) {
00935
00936 } else {
00937
00938 DEBUG(net, 0, "trying to parse: %s", p);
00939 NOT_REACHED();
00940 }
00941 }
00942 if (f != NULL && feof(f)) {
00943 DEBUG(net, 0, "End of commands.log");
00944 fclose(f);
00945 f = NULL;
00946 }
00947 #endif
00948 if (_frame_counter >= _frame_counter_max) {
00949
00950
00951
00952 CheckPauseOnJoin();
00953 CheckMinActiveClients();
00954 NetworkDistributeCommands();
00955 }
00956
00957 bool send_frame = false;
00958
00959
00960 _frame_counter++;
00961
00962 if (_frame_counter > _frame_counter_max) {
00963 _frame_counter_max = _frame_counter + _settings_client.network.frame_freq;
00964 send_frame = true;
00965 }
00966
00967 NetworkExecuteLocalCommandQueue();
00968
00969
00970 StateGameLoop();
00971
00972 _sync_seed_1 = _random.state[0];
00973 #ifdef NETWORK_SEND_DOUBLE_SEED
00974 _sync_seed_2 = _random.state[1];
00975 #endif
00976
00977 NetworkServer_Tick(send_frame);
00978 } else {
00979
00980
00981
00982 if (_frame_counter_server > _frame_counter) {
00983
00984 while (_frame_counter_server > _frame_counter) {
00985 if (!ClientNetworkGameSocketHandler::GameLoop()) return;
00986 }
00987 } else {
00988
00989 if (_frame_counter_max > _frame_counter) {
00990
00991 if (!ClientNetworkGameSocketHandler::GameLoop()) return;
00992 }
00993 }
00994 }
00995
00996 NetworkSend();
00997 }
00998
00999 static void NetworkGenerateServerId()
01000 {
01001 Md5 checksum;
01002 uint8 digest[16];
01003 char hex_output[16 * 2 + 1];
01004 char coding_string[NETWORK_NAME_LENGTH];
01005 int di;
01006
01007 snprintf(coding_string, sizeof(coding_string), "%d%s", (uint)Random(), "OpenTTD Server ID");
01008
01009
01010 checksum.Append((const uint8*)coding_string, strlen(coding_string));
01011 checksum.Finish(digest);
01012
01013 for (di = 0; di < 16; ++di) {
01014 sprintf(hex_output + di * 2, "%02x", digest[di]);
01015 }
01016
01017
01018 snprintf(_settings_client.network.network_id, sizeof(_settings_client.network.network_id), "%s", hex_output);
01019 }
01020
01021 void NetworkStartDebugLog(NetworkAddress address)
01022 {
01023 extern SOCKET _debug_socket;
01024
01025 DEBUG(net, 0, "Redirecting DEBUG() to %s:%d", address.GetHostname(), address.GetPort());
01026
01027 SOCKET s = address.Connect();
01028 if (s == INVALID_SOCKET) {
01029 DEBUG(net, 0, "Failed to open socket for redirection DEBUG()");
01030 return;
01031 }
01032
01033 _debug_socket = s;
01034
01035 DEBUG(net, 0, "DEBUG() is now redirected");
01036 }
01037
01039 void NetworkStartUp()
01040 {
01041 DEBUG(net, 3, "[core] starting network...");
01042
01043
01044 _network_available = NetworkCoreInitialize();
01045 _network_dedicated = false;
01046 _network_last_advertise_frame = 0;
01047 _network_need_advertise = true;
01048 _network_advertise_retries = 0;
01049
01050
01051 if (StrEmpty(_settings_client.network.network_id)) NetworkGenerateServerId();
01052
01053 memset(&_network_game_info, 0, sizeof(_network_game_info));
01054
01055 NetworkInitialize();
01056 DEBUG(net, 3, "[core] network online, multiplayer available");
01057 NetworkFindBroadcastIPs(&_broadcast_list);
01058 }
01059
01061 void NetworkShutDown()
01062 {
01063 NetworkDisconnect(true);
01064 NetworkUDPClose();
01065
01066 DEBUG(net, 3, "[core] shutting down network");
01067
01068 _network_available = false;
01069
01070 NetworkCoreShutdown();
01071 }
01072
01077 bool IsNetworkCompatibleVersion(const char *other)
01078 {
01079 return strncmp(_openttd_revision, other, NETWORK_REVISION_LENGTH - 1) == 0;
01080 }
01081
01082 #endif