src/main.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "irrlicht.h" // createDevice
  21 #include "irrlichttypes_extrabloated.h"
  22 #include "chat_interface.h"
  23 #include "debug.h"
  24 #include "unittest/test.h"
  25 #include "server.h"
  26 #include "filesys.h"
  27 #include "version.h"
  28 #include "game.h"
  29 #include "defaultsettings.h"
  30 #include "gettext.h"
  31 #include "log.h"
  32 #include "quicktune.h"
  33 #include "httpfetch.h"
  34 #include "gameparams.h"
  35 #include "database/database.h"
  36 #include "config.h"
  37 #include "player.h"
  38 #include "porting.h"
  39 #include "network/socket.h"
  40 #if USE_CURSES
  41         #include "terminal_chat_console.h"
  42 #endif
  43 #ifndef SERVER
  44 #include "gui/guiMainMenu.h"
  45 #include "client/clientlauncher.h"
  46 #include "gui/guiEngine.h"
  47 #include "gui/mainmenumanager.h"
  48 #endif
  49
  50 #ifdef HAVE_TOUCHSCREENGUI
  51         #include "gui/touchscreengui.h"
  52 #endif
  53
  54 #if !defined(SERVER) && \
  55         (IRRLICHT_VERSION_MAJOR == 1) && \
  56         (IRRLICHT_VERSION_MINOR == 8) && \
  57         (IRRLICHT_VERSION_REVISION == 2)
  58         #error "Irrlicht 1.8.2 is known to be broken - please update Irrlicht to version >= 1.8.3"
  59 #endif
  60
  61 #define DEBUGFILE "debug.txt"
  62 #define DEFAULT_SERVER_PORT 30000
  63
  64 typedef std::map<std::string, ValueSpec> OptionList;
  65
  66 /**********************************************************************
  67  * Private functions
  68  **********************************************************************/
  69
  70 static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args);
  71 static void set_allowed_options(OptionList *allowed_options);
  72
  73 static void print_help(const OptionList &allowed_options);
  74 static void print_allowed_options(const OptionList &allowed_options);
  75 static void print_version();
  76 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
  77         std::ostream &os, bool print_name = true, bool print_path = true);
  78 static void print_modified_quicktune_values();
  79
  80 static void list_game_ids();
  81 static void list_worlds(bool print_name, bool print_path);
  82 static void setup_log_params(const Settings &cmd_args);
  83 static bool create_userdata_path();
  84 static bool init_common(const Settings &cmd_args, int argc, char *argv[]);
  85 static void startup_message();
  86 static bool read_config_file(const Settings &cmd_args);
  87 static void init_log_streams(const Settings &cmd_args);
  88
  89 static bool game_configure(GameParams *game_params, const Settings &cmd_args);
  90 static void game_configure_port(GameParams *game_params, const Settings &cmd_args);
  91
  92 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args);
  93 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args);
  94 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args);
  95 static bool auto_select_world(GameParams *game_params);
  96 static std::string get_clean_world_path(const std::string &path);
  97
  98 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args);
  99 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args);
 100 static bool determine_subgame(GameParams *game_params);
 101
 102 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args);
 103 static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args);
 104
 105 /**********************************************************************/
 106
 107
 108 FileLogOutput file_log_output;
 109
 110 static OptionList allowed_options;
 111
 112 int main(int argc, char *argv[])
 113 {
 114         int retval;
 115         debug_set_exception_handler();
 116
 117         g_logger.registerThread("Main");
 118         g_logger.addOutputMaxLevel(&stderr_output, LL_ACTION);
 119
 120         Settings cmd_args;
 121         bool cmd_args_ok = get_cmdline_opts(argc, argv, &cmd_args);
 122         if (!cmd_args_ok
 123                         || cmd_args.getFlag("help")
 124                         || cmd_args.exists("nonopt1")) {
 125                 porting::attachOrCreateConsole();
 126                 print_help(allowed_options);
 127                 return cmd_args_ok ? 0 : 1;
 128         }
 129         if (cmd_args.getFlag("console"))
 130                 porting::attachOrCreateConsole();
 131
 132         if (cmd_args.getFlag("version")) {
 133                 porting::attachOrCreateConsole();
 134                 print_version();
 135                 return 0;
 136         }
 137
 138         setup_log_params(cmd_args);
 139
 140         porting::signal_handler_init();
 141
 142 #ifdef __ANDROID__
 143         porting::initAndroid();
 144         porting::initializePathsAndroid();
 145 #else
 146         porting::initializePaths();
 147 #endif
 148
 149         if (!create_userdata_path()) {
 150                 errorstream << "Cannot create user data directory" << std::endl;
 151                 return 1;
 152         }
 153
 154         // Debug handler
 155         BEGIN_DEBUG_EXCEPTION_HANDLER
 156
 157         // List gameids if requested
 158         if (cmd_args.exists("gameid") && cmd_args.get("gameid") == "list") {
 159                 list_game_ids();
 160                 return 0;
 161         }
 162
 163         // List worlds, world names, and world paths if requested
 164         if (cmd_args.exists("worldlist")) {
 165                 if (cmd_args.get("worldlist") == "name") {
 166                         list_worlds(true, false);
 167                 } else if (cmd_args.get("worldlist") == "path") {
 168                         list_worlds(false, true);
 169                 } else {
 170                         list_worlds(true, true);
 171                 }
 172                 return 0;
 173         }
 174
 175         if (!init_common(cmd_args, argc, argv))
 176                 return 1;
 177
 178         if (g_settings->getBool("enable_console"))
 179                 porting::attachOrCreateConsole();
 180
 181 #ifndef __ANDROID__
 182         // Run unit tests
 183         if (cmd_args.getFlag("run-unittests")) {
 184                 return run_tests();
 185         }
 186 #endif
 187
 188         GameParams game_params;
 189 #ifdef SERVER
 190         porting::attachOrCreateConsole();
 191         game_params.is_dedicated_server = true;
 192 #else
 193         const bool isServer = cmd_args.getFlag("server");
 194         if (isServer)
 195                 porting::attachOrCreateConsole();
 196         game_params.is_dedicated_server = isServer;
 197 #endif
 198
 199         if (!game_configure(&game_params, cmd_args))
 200                 return 1;
 201
 202         sanity_check(!game_params.world_path.empty());
 203
 204         infostream << "Using commanded world path ["
 205                    << game_params.world_path << "]" << std::endl;
 206
 207         if (game_params.is_dedicated_server)
 208                 return run_dedicated_server(game_params, cmd_args) ? 0 : 1;
 209
 210 #ifndef SERVER
 211         ClientLauncher launcher;
 212         retval = launcher.run(game_params, cmd_args) ? 0 : 1;
 213 #else
 214         retval = 0;
 215 #endif
 216
 217         // Update configuration file
 218         if (!g_settings_path.empty())
 219                 g_settings->updateConfigFile(g_settings_path.c_str());
 220
 221         print_modified_quicktune_values();
 222
 223         // Stop httpfetch thread (if started)
 224         httpfetch_cleanup();
 225
 226         END_DEBUG_EXCEPTION_HANDLER
 227
 228         return retval;
 229 }
 230
 231
 232 /*****************************************************************************
 233  * Startup / Init
 234  *****************************************************************************/
 235
 236
 237 static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args)
 238 {
 239         set_allowed_options(&allowed_options);
 240
 241         return cmd_args->parseCommandLine(argc, argv, allowed_options);
 242 }
 243
 244 static void set_allowed_options(OptionList *allowed_options)
 245 {
 246         allowed_options->clear();
 247
 248         allowed_options->insert(std::make_pair("help", ValueSpec(VALUETYPE_FLAG,
 249                         _("Show allowed options"))));
 250         allowed_options->insert(std::make_pair("version", ValueSpec(VALUETYPE_FLAG,
 251                         _("Show version information"))));
 252         allowed_options->insert(std::make_pair("config", ValueSpec(VALUETYPE_STRING,
 253                         _("Load configuration from specified file"))));
 254         allowed_options->insert(std::make_pair("port", ValueSpec(VALUETYPE_STRING,
 255                         _("Set network port (UDP)"))));
 256         allowed_options->insert(std::make_pair("run-unittests", ValueSpec(VALUETYPE_FLAG,
 257                         _("Run the unit tests and exit"))));
 258         allowed_options->insert(std::make_pair("map-dir", ValueSpec(VALUETYPE_STRING,
 259                         _("Same as --world (deprecated)"))));
 260         allowed_options->insert(std::make_pair("world", ValueSpec(VALUETYPE_STRING,
 261                         _("Set world path (implies local game)"))));
 262         allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
 263                         _("Set world by name (implies local game)"))));
 264         allowed_options->insert(std::make_pair("worldlist", ValueSpec(VALUETYPE_STRING,
 265                         _("Get list of worlds (implies local game) ('path' lists paths, "
 266                         "'name' lists names, 'both' lists both)"))));
 267         allowed_options->insert(std::make_pair("quiet", ValueSpec(VALUETYPE_FLAG,
 268                         _("Print to console errors only"))));
 269 #if !defined(_WIN32)
 270         allowed_options->insert(std::make_pair("color", ValueSpec(VALUETYPE_STRING,
 271                         _("Coloured logs ('always', 'never' or 'auto'), defaults to 'auto'"
 272                         ))));
 273 #else
 274         allowed_options->insert(std::make_pair("color", ValueSpec(VALUETYPE_STRING,
 275                         _("Coloured logs ('always' or 'never'), defaults to 'never'"
 276                         ))));
 277 #endif
 278         allowed_options->insert(std::make_pair("info", ValueSpec(VALUETYPE_FLAG,
 279                         _("Print more information to console"))));
 280         allowed_options->insert(std::make_pair("verbose",  ValueSpec(VALUETYPE_FLAG,
 281                         _("Print even more information to console"))));
 282         allowed_options->insert(std::make_pair("trace", ValueSpec(VALUETYPE_FLAG,
 283                         _("Print enormous amounts of information to log and console"))));
 284         allowed_options->insert(std::make_pair("logfile", ValueSpec(VALUETYPE_STRING,
 285                         _("Set logfile path ('' = no logging)"))));
 286         allowed_options->insert(std::make_pair("gameid", ValueSpec(VALUETYPE_STRING,
 287                         _("Set gameid (\"--gameid list\" prints available ones)"))));
 288         allowed_options->insert(std::make_pair("migrate", ValueSpec(VALUETYPE_STRING,
 289                         _("Migrate from current map backend to another (Only works when using minetestserver or with --server)"))));
 290         allowed_options->insert(std::make_pair("migrate-players", ValueSpec(VALUETYPE_STRING,
 291                 _("Migrate from current players backend to another (Only works when using minetestserver or with --server)"))));
 292         allowed_options->insert(std::make_pair("terminal", ValueSpec(VALUETYPE_FLAG,
 293                         _("Feature an interactive terminal (Only works when using minetestserver or with --server)"))));
 294 #ifndef SERVER
 295         allowed_options->insert(std::make_pair("videomodes", ValueSpec(VALUETYPE_FLAG,
 296                         _("Show available video modes"))));
 297         allowed_options->insert(std::make_pair("speedtests", ValueSpec(VALUETYPE_FLAG,
 298                         _("Run speed tests"))));
 299         allowed_options->insert(std::make_pair("address", ValueSpec(VALUETYPE_STRING,
 300                         _("Address to connect to. ('' = local game)"))));
 301         allowed_options->insert(std::make_pair("random-input", ValueSpec(VALUETYPE_FLAG,
 302                         _("Enable random user input, for testing"))));
 303         allowed_options->insert(std::make_pair("server", ValueSpec(VALUETYPE_FLAG,
 304                         _("Run dedicated server"))));
 305         allowed_options->insert(std::make_pair("name", ValueSpec(VALUETYPE_STRING,
 306                         _("Set player name"))));
 307         allowed_options->insert(std::make_pair("password", ValueSpec(VALUETYPE_STRING,
 308                         _("Set password"))));
 309         allowed_options->insert(std::make_pair("go", ValueSpec(VALUETYPE_FLAG,
 310                         _("Disable main menu"))));
 311         allowed_options->insert(std::make_pair("console", ValueSpec(VALUETYPE_FLAG,
 312                 _("Starts with the console (Windows only)"))));
 313 #endif
 314
 315 }
 316
 317 static void print_help(const OptionList &allowed_options)
 318 {
 319         std::cout << _("Allowed options:") << std::endl;
 320         print_allowed_options(allowed_options);
 321 }
 322
 323 static void print_allowed_options(const OptionList &allowed_options)
 324 {
 325         for (const auto &allowed_option : allowed_options) {
 326                 std::ostringstream os1(std::ios::binary);
 327                 os1 << "  --" << allowed_option.first;
 328                 if (allowed_option.second.type != VALUETYPE_FLAG)
 329                         os1 << _(" <value>");
 330
 331                 std::cout << padStringRight(os1.str(), 30);
 332
 333                 if (allowed_option.second.help)
 334                         std::cout << allowed_option.second.help;
 335
 336                 std::cout << std::endl;
 337         }
 338 }
 339
 340 static void print_version()
 341 {
 342         std::cout << PROJECT_NAME_C " " << g_version_hash
 343                 << " (" << porting::getPlatformName() << ")" << std::endl;
 344 #ifndef SERVER
 345         std::cout << "Using Irrlicht " IRRLICHT_SDK_VERSION << std::endl;
 346 #endif
 347         std::cout << g_build_info << std::endl;
 348 }
 349
 350 static void list_game_ids()
 351 {
 352         std::set<std::string> gameids = getAvailableGameIds();
 353         for (const std::string &gameid : gameids)
 354                 std::cout << gameid <<std::endl;
 355 }
 356
 357 static void list_worlds(bool print_name, bool print_path)
 358 {
 359         std::cout << _("Available worlds:") << std::endl;
 360         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 361         print_worldspecs(worldspecs, std::cout, print_name, print_path);
 362 }
 363
 364 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
 365         std::ostream &os, bool print_name, bool print_path)
 366 {
 367         for (const WorldSpec &worldspec : worldspecs) {
 368                 std::string name = worldspec.name;
 369                 std::string path = worldspec.path;
 370                 if (print_name && print_path) {
 371                         os << "\t" << name << "\t\t" << path << std::endl;
 372                 } else if (print_name) {
 373                         os << "\t" << name << std::endl;
 374                 } else if (print_path) {
 375                         os << "\t" << path << std::endl;
 376                 }
 377         }
 378 }
 379
 380 static void print_modified_quicktune_values()
 381 {
 382         bool header_printed = false;
 383         std::vector<std::string> names = getQuicktuneNames();
 384
 385         for (const std::string &name : names) {
 386                 QuicktuneValue val = getQuicktuneValue(name);
 387                 if (!val.modified)
 388                         continue;
 389                 if (!header_printed) {
 390                         dstream << "Modified quicktune values:" << std::endl;
 391                         header_printed = true;
 392                 }
 393                 dstream << name << " = " << val.getString() << std::endl;
 394         }
 395 }
 396
 397 static void setup_log_params(const Settings &cmd_args)
 398 {
 399         // Quiet mode, print errors only
 400         if (cmd_args.getFlag("quiet")) {
 401                 g_logger.removeOutput(&stderr_output);
 402                 g_logger.addOutputMaxLevel(&stderr_output, LL_ERROR);
 403         }
 404
 405         // Coloured log messages (see log.h)
 406         if (cmd_args.exists("color")) {
 407                 std::string mode = cmd_args.get("color");
 408                 if (mode == "auto")
 409                         Logger::color_mode = LOG_COLOR_AUTO;
 410                 else if (mode == "always")
 411                         Logger::color_mode = LOG_COLOR_ALWAYS;
 412                 else
 413                         Logger::color_mode = LOG_COLOR_NEVER;
 414         }
 415
 416         // If trace is enabled, enable logging of certain things
 417         if (cmd_args.getFlag("trace")) {
 418                 dstream << _("Enabling trace level debug output") << std::endl;
 419                 g_logger.setTraceEnabled(true);
 420                 dout_con_ptr = &verbosestream; // This is somewhat old
 421                 socket_enable_debug_output = true; // Sockets doesn't use log.h
 422         }
 423
 424         // In certain cases, output info level on stderr
 425         if (cmd_args.getFlag("info") || cmd_args.getFlag("verbose") ||
 426                         cmd_args.getFlag("trace") || cmd_args.getFlag("speedtests"))
 427                 g_logger.addOutput(&stderr_output, LL_INFO);
 428
 429         // In certain cases, output verbose level on stderr
 430         if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
 431                 g_logger.addOutput(&stderr_output, LL_VERBOSE);
 432 }
 433
 434 static bool create_userdata_path()
 435 {
 436         bool success;
 437
 438 #ifdef __ANDROID__
 439         if (!fs::PathExists(porting::path_user)) {
 440                 success = fs::CreateDir(porting::path_user);
 441         } else {
 442                 success = true;
 443         }
 444         porting::copyAssets();
 445 #else
 446         // Create user data directory
 447         success = fs::CreateDir(porting::path_user);
 448 #endif
 449
 450         return success;
 451 }
 452
 453 static bool init_common(const Settings &cmd_args, int argc, char *argv[])
 454 {
 455         startup_message();
 456         set_default_settings(g_settings);
 457
 458         // Initialize sockets
 459         sockets_init();
 460         atexit(sockets_cleanup);
 461
 462         if (!read_config_file(cmd_args))
 463                 return false;
 464
 465         init_log_streams(cmd_args);
 466
 467         // Initialize random seed
 468         srand(time(0));
 469         mysrand(time(0));
 470
 471         // Initialize HTTP fetcher
 472         httpfetch_init(g_settings->getS32("curl_parallel_limit"));
 473
 474         init_gettext(porting::path_locale.c_str(),
 475                 g_settings->get("language"), argc, argv);
 476
 477         return true;
 478 }
 479
 480 static void startup_message()
 481 {
 482         infostream << PROJECT_NAME << " " << _("with")
 483                    << " SER_FMT_VER_HIGHEST_READ="
 484                << (int)SER_FMT_VER_HIGHEST_READ << ", "
 485                << g_build_info << std::endl;
 486 }
 487
 488 static bool read_config_file(const Settings &cmd_args)
 489 {
 490         // Path of configuration file in use
 491         sanity_check(g_settings_path == "");    // Sanity check
 492
 493         if (cmd_args.exists("config")) {
 494                 bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
 495                 if (!r) {
 496                         errorstream << "Could not read configuration from \""
 497                                     << cmd_args.get("config") << "\"" << std::endl;
 498                         return false;
 499                 }
 500                 g_settings_path = cmd_args.get("config");
 501         } else {
 502                 std::vector<std::string> filenames;
 503                 filenames.push_back(porting::path_user + DIR_DELIM + "minetest.conf");
 504                 // Legacy configuration file location
 505                 filenames.push_back(porting::path_user +
 506                                 DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 507
 508 #if RUN_IN_PLACE
 509                 // Try also from a lower level (to aid having the same configuration
 510                 // for many RUN_IN_PLACE installs)
 511                 filenames.push_back(porting::path_user +
 512                                 DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 513 #endif
 514
 515                 for (const std::string &filename : filenames) {
 516                         bool r = g_settings->readConfigFile(filename.c_str());
 517                         if (r) {
 518                                 g_settings_path = filename;
 519                                 break;
 520                         }
 521                 }
 522
 523                 // If no path found, use the first one (menu creates the file)
 524                 if (g_settings_path.empty())
 525                         g_settings_path = filenames[0];
 526         }
 527
 528         return true;
 529 }
 530
 531 static void init_log_streams(const Settings &cmd_args)
 532 {
 533 #if RUN_IN_PLACE
 534         std::string log_filename = DEBUGFILE;
 535 #else
 536         std::string log_filename = porting::path_user + DIR_DELIM + DEBUGFILE;
 537 #endif
 538         if (cmd_args.exists("logfile"))
 539                 log_filename = cmd_args.get("logfile");
 540
 541         g_logger.removeOutput(&file_log_output);
 542         std::string conf_loglev = g_settings->get("debug_log_level");
 543
 544         // Old integer format
 545         if (std::isdigit(conf_loglev[0])) {
 546                 warningstream << "Deprecated use of debug_log_level with an "
 547                         "integer value; please update your configuration." << std::endl;
 548                 static const char *lev_name[] =
 549                         {"", "error", "action", "info", "verbose"};
 550                 int lev_i = atoi(conf_loglev.c_str());
 551                 if (lev_i < 0 || lev_i >= (int)ARRLEN(lev_name)) {
 552                         warningstream << "Supplied invalid debug_log_level!"
 553                                 "  Assuming action level." << std::endl;
 554                         lev_i = 2;
 555                 }
 556                 conf_loglev = lev_name[lev_i];
 557         }
 558
 559         if (log_filename.empty() || conf_loglev.empty())  // No logging
 560                 return;
 561
 562         LogLevel log_level = Logger::stringToLevel(conf_loglev);
 563         if (log_level == LL_MAX) {
 564                 warningstream << "Supplied unrecognized debug_log_level; "
 565                         "using maximum." << std::endl;
 566         }
 567
 568         verbosestream << "log_filename = " << log_filename << std::endl;
 569
 570         file_log_output.open(log_filename);
 571         g_logger.addOutputMaxLevel(&file_log_output, log_level);
 572 }
 573
 574 static bool game_configure(GameParams *game_params, const Settings &cmd_args)
 575 {
 576         game_configure_port(game_params, cmd_args);
 577
 578         if (!game_configure_world(game_params, cmd_args)) {
 579                 errorstream << "No world path specified or found." << std::endl;
 580                 return false;
 581         }
 582
 583         game_configure_subgame(game_params, cmd_args);
 584
 585         return true;
 586 }
 587
 588 static void game_configure_port(GameParams *game_params, const Settings &cmd_args)
 589 {
 590         if (cmd_args.exists("port"))
 591                 game_params->socket_port = cmd_args.getU16("port");
 592         else
 593                 game_params->socket_port = g_settings->getU16("port");
 594
 595         if (game_params->socket_port == 0)
 596                 game_params->socket_port = DEFAULT_SERVER_PORT;
 597 }
 598
 599 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args)
 600 {
 601         if (get_world_from_cmdline(game_params, cmd_args))
 602                 return true;
 603
 604         if (get_world_from_config(game_params, cmd_args))
 605                 return true;
 606
 607         return auto_select_world(game_params);
 608 }
 609
 610 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 611 {
 612         std::string commanded_world;
 613
 614         // World name
 615         std::string commanded_worldname;
 616         if (cmd_args.exists("worldname"))
 617                 commanded_worldname = cmd_args.get("worldname");
 618
 619         // If a world name was specified, convert it to a path
 620         if (!commanded_worldname.empty()) {
 621                 // Get information about available worlds
 622                 std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 623                 bool found = false;
 624                 for (const WorldSpec &worldspec : worldspecs) {
 625                         std::string name = worldspec.name;
 626                         if (name == commanded_worldname) {
 627                                 dstream << _("Using world specified by --worldname on the "
 628                                         "command line") << std::endl;
 629                                 commanded_world = worldspec.path;
 630                                 found = true;
 631                                 break;
 632                         }
 633                 }
 634                 if (!found) {
 635                         dstream << _("World") << " '" << commanded_worldname
 636                                 << _("' not available. Available worlds:") << std::endl;
 637                         print_worldspecs(worldspecs, dstream);
 638                         return false;
 639                 }
 640
 641                 game_params->world_path = get_clean_world_path(commanded_world);
 642                 return !commanded_world.empty();
 643         }
 644
 645         if (cmd_args.exists("world"))
 646                 commanded_world = cmd_args.get("world");
 647         else if (cmd_args.exists("map-dir"))
 648                 commanded_world = cmd_args.get("map-dir");
 649         else if (cmd_args.exists("nonopt0")) // First nameless argument
 650                 commanded_world = cmd_args.get("nonopt0");
 651
 652         game_params->world_path = get_clean_world_path(commanded_world);
 653         return !commanded_world.empty();
 654 }
 655
 656 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args)
 657 {
 658         // World directory
 659         std::string commanded_world;
 660
 661         if (g_settings->exists("map-dir"))
 662                 commanded_world = g_settings->get("map-dir");
 663
 664         game_params->world_path = get_clean_world_path(commanded_world);
 665
 666         return !commanded_world.empty();
 667 }
 668
 669 static bool auto_select_world(GameParams *game_params)
 670 {
 671         // No world was specified; try to select it automatically
 672         // Get information about available worlds
 673
 674         verbosestream << _("Determining world path") << std::endl;
 675
 676         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 677         std::string world_path;
 678
 679         // If there is only a single world, use it
 680         if (worldspecs.size() == 1) {
 681                 world_path = worldspecs[0].path;
 682                 dstream <<_("Automatically selecting world at") << " ["
 683                         << world_path << "]" << std::endl;
 684         // If there are multiple worlds, list them
 685         } else if (worldspecs.size() > 1 && game_params->is_dedicated_server) {
 686                 std::cerr << _("Multiple worlds are available.") << std::endl;
 687                 std::cerr << _("Please select one using --worldname <name>"
 688                                 " or --world <path>") << std::endl;
 689                 print_worldspecs(worldspecs, std::cerr);
 690                 return false;
 691         // If there are no worlds, automatically create a new one
 692         } else {
 693                 // This is the ultimate default world path
 694                 world_path = porting::path_user + DIR_DELIM + "worlds" +
 695                                 DIR_DELIM + "world";
 696                 infostream << "Creating default world at ["
 697                            << world_path << "]" << std::endl;
 698         }
 699
 700         assert(world_path != "");       // Post-condition
 701         game_params->world_path = world_path;
 702         return true;
 703 }
 704
 705 static std::string get_clean_world_path(const std::string &path)
 706 {
 707         const std::string worldmt = "world.mt";
 708         std::string clean_path;
 709
 710         if (path.size() > worldmt.size()
 711                         && path.substr(path.size() - worldmt.size()) == worldmt) {
 712                 dstream << _("Supplied world.mt file - stripping it off.") << std::endl;
 713                 clean_path = path.substr(0, path.size() - worldmt.size());
 714         } else {
 715                 clean_path = path;
 716         }
 717         return path;
 718 }
 719
 720
 721 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args)
 722 {
 723         bool success;
 724
 725         success = get_game_from_cmdline(game_params, cmd_args);
 726         if (!success)
 727                 success = determine_subgame(game_params);
 728
 729         return success;
 730 }
 731
 732 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 733 {
 734         SubgameSpec commanded_gamespec;
 735
 736         if (cmd_args.exists("gameid")) {
 737                 std::string gameid = cmd_args.get("gameid");
 738                 commanded_gamespec = findSubgame(gameid);
 739                 if (!commanded_gamespec.isValid()) {
 740                         errorstream << "Game \"" << gameid << "\" not found" << std::endl;
 741                         return false;
 742                 }
 743                 dstream << _("Using game specified by --gameid on the command line")
 744                         << std::endl;
 745                 game_params->game_spec = commanded_gamespec;
 746                 return true;
 747         }
 748
 749         return false;
 750 }
 751
 752 static bool determine_subgame(GameParams *game_params)
 753 {
 754         SubgameSpec gamespec;
 755
 756         assert(game_params->world_path != "");  // Pre-condition
 757
 758         verbosestream << _("Determining gameid/gamespec") << std::endl;
 759         // If world doesn't exist
 760         if (!game_params->world_path.empty()
 761                 && !getWorldExists(game_params->world_path)) {
 762                 // Try to take gamespec from command line
 763                 if (game_params->game_spec.isValid()) {
 764                         gamespec = game_params->game_spec;
 765                         infostream << "Using commanded gameid [" << gamespec.id << "]" << std::endl;
 766                 } else { // Otherwise we will be using "minetest"
 767                         gamespec = findSubgame(g_settings->get("default_game"));
 768                         infostream << "Using default gameid [" << gamespec.id << "]" << std::endl;
 769                         if (!gamespec.isValid()) {
 770                                 errorstream << "Subgame specified in default_game ["
 771                                             << g_settings->get("default_game")
 772                                             << "] is invalid." << std::endl;
 773                                 return false;
 774                         }
 775                 }
 776         } else { // World exists
 777                 std::string world_gameid = getWorldGameId(game_params->world_path, false);
 778                 // If commanded to use a gameid, do so
 779                 if (game_params->game_spec.isValid()) {
 780                         gamespec = game_params->game_spec;
 781                         if (game_params->game_spec.id != world_gameid) {
 782                                 warningstream << "Using commanded gameid ["
 783                                             << gamespec.id << "]" << " instead of world gameid ["
 784                                             << world_gameid << "]" << std::endl;
 785                         }
 786                 } else {
 787                         // If world contains an embedded game, use it;
 788                         // Otherwise find world from local system.
 789                         gamespec = findWorldSubgame(game_params->world_path);
 790                         infostream << "Using world gameid [" << gamespec.id << "]" << std::endl;
 791                 }
 792         }
 793
 794         if (!gamespec.isValid()) {
 795                 errorstream << "Subgame [" << gamespec.id << "] could not be found."
 796                             << std::endl;
 797                 return false;
 798         }
 799
 800         game_params->game_spec = gamespec;
 801         return true;
 802 }
 803
 804
 805 /*****************************************************************************
 806  * Dedicated server
 807  *****************************************************************************/
 808 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args)
 809 {
 810         verbosestream << _("Using world path") << " ["
 811                       << game_params.world_path << "]" << std::endl;
 812         verbosestream << _("Using gameid") << " ["
 813                       << game_params.game_spec.id << "]" << std::endl;
 814
 815         // Bind address
 816         std::string bind_str = g_settings->get("bind_address");
 817         Address bind_addr(0, 0, 0, 0, game_params.socket_port);
 818
 819         if (g_settings->getBool("ipv6_server")) {
 820                 bind_addr.setAddress((IPv6AddressBytes*) NULL);
 821         }
 822         try {
 823                 bind_addr.Resolve(bind_str.c_str());
 824         } catch (ResolveError &e) {
 825                 infostream << "Resolving bind address \"" << bind_str
 826                            << "\" failed: " << e.what()
 827                            << " -- Listening on all addresses." << std::endl;
 828         }
 829         if (bind_addr.isIPv6() && !g_settings->getBool("enable_ipv6")) {
 830                 errorstream << "Unable to listen on "
 831                             << bind_addr.serializeString()
 832                             << L" because IPv6 is disabled" << std::endl;
 833                 return false;
 834         }
 835
 836         // Database migration
 837         if (cmd_args.exists("migrate"))
 838                 return migrate_map_database(game_params, cmd_args);
 839
 840         if (cmd_args.exists("migrate-players"))
 841                 return ServerEnvironment::migratePlayersDatabase(game_params, cmd_args);
 842
 843         if (cmd_args.exists("terminal")) {
 844 #if USE_CURSES
 845                 bool name_ok = true;
 846                 std::string admin_nick = g_settings->get("name");
 847
 848                 name_ok = name_ok && !admin_nick.empty();
 849                 name_ok = name_ok && string_allowed(admin_nick, PLAYERNAME_ALLOWED_CHARS);
 850
 851                 if (!name_ok) {
 852                         if (admin_nick.empty()) {
 853                                 errorstream << "No name given for admin. "
 854                                         << "Please check your minetest.conf that it "
 855                                         << "contains a 'name = ' to your main admin account."
 856                                         << std::endl;
 857                         } else {
 858                                 errorstream << "Name for admin '"
 859                                         << admin_nick << "' is not valid. "
 860                                         << "Please check that it only contains allowed characters. "
 861                                         << "Valid characters are: " << PLAYERNAME_ALLOWED_CHARS_USER_EXPL
 862                                         << std::endl;
 863                         }
 864                         return false;
 865                 }
 866                 ChatInterface iface;
 867                 bool &kill = *porting::signal_handler_killstatus();
 868
 869                 try {
 870                         // Create server
 871                         Server server(game_params.world_path, game_params.game_spec,
 872                                         false, bind_addr, true, &iface);
 873
 874                         g_term_console.setup(&iface, &kill, admin_nick);
 875
 876                         g_term_console.start();
 877
 878                         server.start();
 879                         // Run server
 880                         dedicated_server_loop(server, kill);
 881                 } catch (const ModError &e) {
 882                         g_term_console.stopAndWaitforThread();
 883                         errorstream << "ModError: " << e.what() << std::endl;
 884                         return false;
 885                 } catch (const ServerError &e) {
 886                         g_term_console.stopAndWaitforThread();
 887                         errorstream << "ServerError: " << e.what() << std::endl;
 888                         return false;
 889                 }
 890
 891                 // Tell the console to stop, and wait for it to finish,
 892                 // only then leave context and free iface
 893                 g_term_console.stop();
 894                 g_term_console.wait();
 895
 896                 g_term_console.clearKillStatus();
 897         } else {
 898 #else
 899                 errorstream << "Cmd arg --terminal passed, but "
 900                         << "compiled without ncurses. Ignoring." << std::endl;
 901         } {
 902 #endif
 903                 try {
 904                         // Create server
 905                         Server server(game_params.world_path, game_params.game_spec, false,
 906                                 bind_addr, true);
 907                         server.start();
 908
 909                         // Run server
 910                         bool &kill = *porting::signal_handler_killstatus();
 911                         dedicated_server_loop(server, kill);
 912
 913                 } catch (const ModError &e) {
 914                         errorstream << "ModError: " << e.what() << std::endl;
 915                         return false;
 916                 } catch (const ServerError &e) {
 917                         errorstream << "ServerError: " << e.what() << std::endl;
 918                         return false;
 919                 }
 920         }
 921
 922         return true;
 923 }
 924
 925 static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args)
 926 {
 927         std::string migrate_to = cmd_args.get("migrate");
 928         Settings world_mt;
 929         std::string world_mt_path = game_params.world_path + DIR_DELIM + "world.mt";
 930         if (!world_mt.readConfigFile(world_mt_path.c_str())) {
 931                 errorstream << "Cannot read world.mt!" << std::endl;
 932                 return false;
 933         }
 934
 935         if (!world_mt.exists("backend")) {
 936                 errorstream << "Please specify your current backend in world.mt:"
 937                         << std::endl
 938                         << "    backend = {sqlite3|leveldb|redis|dummy|postgresql}"
 939                         << std::endl;
 940                 return false;
 941         }
 942
 943         std::string backend = world_mt.get("backend");
 944         if (backend == migrate_to) {
 945                 errorstream << "Cannot migrate: new backend is same"
 946                         << " as the old one" << std::endl;
 947                 return false;
 948         }
 949
 950         MapDatabase *old_db = ServerMap::createDatabase(backend, game_params.world_path, world_mt),
 951                 *new_db = ServerMap::createDatabase(migrate_to, game_params.world_path, world_mt);
 952
 953         u32 count = 0;
 954         time_t last_update_time = 0;
 955         bool &kill = *porting::signal_handler_killstatus();
 956
 957         std::vector<v3s16> blocks;
 958         old_db->listAllLoadableBlocks(blocks);
 959         new_db->beginSave();
 960         for (std::vector<v3s16>::const_iterator it = blocks.begin(); it != blocks.end(); ++it) {
 961                 if (kill) return false;
 962
 963                 std::string data;
 964                 old_db->loadBlock(*it, &data);
 965                 if (!data.empty()) {
 966                         new_db->saveBlock(*it, data);
 967                 } else {
 968                         errorstream << "Failed to load block " << PP(*it) << ", skipping it." << std::endl;
 969                 }
 970                 if (++count % 0xFF == 0 && time(NULL) - last_update_time >= 1) {
 971                         std::cerr << " Migrated " << count << " blocks, "
 972                                 << (100.0 * count / blocks.size()) << "% completed.\r";
 973                         new_db->endSave();
 974                         new_db->beginSave();
 975                         last_update_time = time(NULL);
 976                 }
 977         }
 978         std::cerr << std::endl;
 979         new_db->endSave();
 980         delete old_db;
 981         delete new_db;
 982
 983         actionstream << "Successfully migrated " << count << " blocks" << std::endl;
 984         world_mt.set("backend", migrate_to);
 985         if (!world_mt.updateConfigFile(world_mt_path.c_str()))
 986                 errorstream << "Failed to update world.mt!" << std::endl;
 987         else
 988                 actionstream << "world.mt updated" << std::endl;
 989
 990         return true;
 991 }