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