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 "irrlichttypes.h" // must be included before anything irrlicht, see comment in the file
  21 #include "irrlicht.h" // createDevice
  22 #include "irrlichttypes_extrabloated.h"
  23 #include "chat_interface.h"
  24 #include "debug.h"
  25 #include "unittest/test.h"
  26 #include "server.h"
  27 #include "filesys.h"
  28 #include "version.h"
  29 #include "client/game.h"
  30 #include "defaultsettings.h"
  31 #include "gettext.h"
  32 #include "log.h"
  33 #include "util/quicktune.h"
  34 #include "httpfetch.h"
  35 #include "gameparams.h"
  36 #include "database/database.h"
  37 #include "config.h"
  38 #include "player.h"
  39 #include "porting.h"
  40 #include "network/socket.h"
  41 #include "mapblock.h"
  42 #if USE_CURSES
  43         #include "terminal_chat_console.h"
  44 #endif
  45 #ifndef SERVER
  46 #include "gui/guiMainMenu.h"
  47 #include "client/clientlauncher.h"
  48 #include "gui/guiEngine.h"
  49 #include "gui/mainmenumanager.h"
  50 #endif
  51 #ifdef HAVE_TOUCHSCREENGUI
  52         #include "gui/touchscreengui.h"
  53 #endif
  54
  55 // for version information only
  56 extern "C" {
  57 #if USE_LUAJIT
  58         #include <luajit.h>
  59 #else
  60         #include <lua.h>
  61 #endif
  62 }
  63
  64 #if !defined(__cpp_rtti) || !defined(__cpp_exceptions)
  65 #error Minetest cannot be built without exceptions or RTTI
  66 #endif
  67
  68 #if defined(__MINGW32__) && !defined(__MINGW64__) && !defined(__clang__) && \
  69         (__GNUC__ < 11 || (__GNUC__ == 11 && __GNUC_MINOR__ < 1))
  70 // see e.g. https://github.com/minetest/minetest/issues/10137
  71 #warning ==================================
  72 #warning 32-bit MinGW gcc before 11.1 has known issues with crashes on thread exit, you should upgrade.
  73 #warning ==================================
  74 #endif
  75
  76 #define DEBUGFILE "debug.txt"
  77 #define DEFAULT_SERVER_PORT 30000
  78
  79 typedef std::map<std::string, ValueSpec> OptionList;
  80
  81 /**********************************************************************
  82  * Private functions
  83  **********************************************************************/
  84
  85 static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args);
  86 static void set_allowed_options(OptionList *allowed_options);
  87
  88 static void print_help(const OptionList &allowed_options);
  89 static void print_allowed_options(const OptionList &allowed_options);
  90 static void print_version();
  91 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
  92         std::ostream &os, bool print_name = true, bool print_path = true);
  93 static void print_modified_quicktune_values();
  94
  95 static void list_game_ids();
  96 static void list_worlds(bool print_name, bool print_path);
  97 static bool setup_log_params(const Settings &cmd_args);
  98 static bool create_userdata_path();
  99 static bool init_common(const Settings &cmd_args, int argc, char *argv[]);
 100 static void uninit_common();
 101 static void startup_message();
 102 static bool read_config_file(const Settings &cmd_args);
 103 static void init_log_streams(const Settings &cmd_args);
 104
 105 static bool game_configure(GameParams *game_params, const Settings &cmd_args);
 106 static void game_configure_port(GameParams *game_params, const Settings &cmd_args);
 107
 108 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args);
 109 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args);
 110 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args);
 111 static bool auto_select_world(GameParams *game_params);
 112 static std::string get_clean_world_path(const std::string &path);
 113
 114 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args);
 115 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args);
 116 static bool determine_subgame(GameParams *game_params);
 117
 118 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args);
 119 static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args);
 120 static bool recompress_map_database(const GameParams &game_params, const Settings &cmd_args, const Address &addr);
 121
 122 /**********************************************************************/
 123
 124
 125 FileLogOutput file_log_output;
 126
 127 static OptionList allowed_options;
 128
 129 int main(int argc, char *argv[])
 130 {
 131         int retval;
 132         debug_set_exception_handler();
 133
 134         g_logger.registerThread("Main");
 135         g_logger.addOutputMaxLevel(&stderr_output, LL_ACTION);
 136
 137         Settings cmd_args;
 138         bool cmd_args_ok = get_cmdline_opts(argc, argv, &cmd_args);
 139         if (!cmd_args_ok
 140                         || cmd_args.getFlag("help")
 141                         || cmd_args.exists("nonopt1")) {
 142                 porting::attachOrCreateConsole();
 143                 print_help(allowed_options);
 144                 return cmd_args_ok ? 0 : 1;
 145         }
 146         if (cmd_args.getFlag("console"))
 147                 porting::attachOrCreateConsole();
 148
 149         if (cmd_args.getFlag("version")) {
 150                 porting::attachOrCreateConsole();
 151                 print_version();
 152                 return 0;
 153         }
 154
 155         if (!setup_log_params(cmd_args))
 156                 return 1;
 157
 158         porting::signal_handler_init();
 159
 160 #ifdef __ANDROID__
 161         porting::initAndroid();
 162         porting::initializePathsAndroid();
 163 #else
 164         porting::initializePaths();
 165 #endif
 166
 167         if (!create_userdata_path()) {
 168                 errorstream << "Cannot create user data directory" << std::endl;
 169                 return 1;
 170         }
 171
 172         // Debug handler
 173         BEGIN_DEBUG_EXCEPTION_HANDLER
 174
 175         // List gameids if requested
 176         if (cmd_args.exists("gameid") && cmd_args.get("gameid") == "list") {
 177                 list_game_ids();
 178                 return 0;
 179         }
 180
 181         // List worlds, world names, and world paths if requested
 182         if (cmd_args.exists("worldlist")) {
 183                 if (cmd_args.get("worldlist") == "name") {
 184                         list_worlds(true, false);
 185                 } else if (cmd_args.get("worldlist") == "path") {
 186                         list_worlds(false, true);
 187                 } else if (cmd_args.get("worldlist") == "both") {
 188                         list_worlds(true, true);
 189                 } else {
 190                         errorstream << "Invalid --worldlist value: "
 191                                 << cmd_args.get("worldlist") << std::endl;
 192                         return 1;
 193                 }
 194                 return 0;
 195         }
 196
 197         if (!init_common(cmd_args, argc, argv))
 198                 return 1;
 199
 200         if (g_settings->getBool("enable_console"))
 201                 porting::attachOrCreateConsole();
 202
 203 #ifndef __ANDROID__
 204         // Run unit tests
 205         if (cmd_args.getFlag("run-unittests")) {
 206 #if BUILD_UNITTESTS
 207                 return run_tests();
 208 #else
 209                 errorstream << "Unittest support is not enabled in this binary. "
 210                         << "If you want to enable it, compile project with BUILD_UNITTESTS=1 flag."
 211                         << std::endl;
 212                 return 1;
 213 #endif
 214         }
 215 #endif
 216
 217         GameStartData game_params;
 218 #ifdef SERVER
 219         porting::attachOrCreateConsole();
 220         game_params.is_dedicated_server = true;
 221 #else
 222         const bool isServer = cmd_args.getFlag("server");
 223         if (isServer)
 224                 porting::attachOrCreateConsole();
 225         game_params.is_dedicated_server = isServer;
 226 #endif
 227
 228         if (!game_configure(&game_params, cmd_args))
 229                 return 1;
 230
 231         sanity_check(!game_params.world_path.empty());
 232
 233         if (game_params.is_dedicated_server)
 234                 return run_dedicated_server(game_params, cmd_args) ? 0 : 1;
 235
 236 #ifndef SERVER
 237         retval = ClientLauncher().run(game_params, cmd_args) ? 0 : 1;
 238 #else
 239         retval = 0;
 240 #endif
 241
 242         // Update configuration file
 243         if (!g_settings_path.empty())
 244                 g_settings->updateConfigFile(g_settings_path.c_str());
 245
 246         print_modified_quicktune_values();
 247
 248         END_DEBUG_EXCEPTION_HANDLER
 249
 250         return retval;
 251 }
 252
 253
 254 /*****************************************************************************
 255  * Startup / Init
 256  *****************************************************************************/
 257
 258
 259 static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args)
 260 {
 261         set_allowed_options(&allowed_options);
 262
 263         return cmd_args->parseCommandLine(argc, argv, allowed_options);
 264 }
 265
 266 static void set_allowed_options(OptionList *allowed_options)
 267 {
 268         allowed_options->clear();
 269
 270         allowed_options->insert(std::make_pair("help", ValueSpec(VALUETYPE_FLAG,
 271                         _("Show allowed options"))));
 272         allowed_options->insert(std::make_pair("version", ValueSpec(VALUETYPE_FLAG,
 273                         _("Show version information"))));
 274         allowed_options->insert(std::make_pair("config", ValueSpec(VALUETYPE_STRING,
 275                         _("Load configuration from specified file"))));
 276         allowed_options->insert(std::make_pair("port", ValueSpec(VALUETYPE_STRING,
 277                         _("Set network port (UDP)"))));
 278         allowed_options->insert(std::make_pair("run-unittests", ValueSpec(VALUETYPE_FLAG,
 279                         _("Run the unit tests and exit"))));
 280         allowed_options->insert(std::make_pair("map-dir", ValueSpec(VALUETYPE_STRING,
 281                         _("Same as --world (deprecated)"))));
 282         allowed_options->insert(std::make_pair("world", ValueSpec(VALUETYPE_STRING,
 283                         _("Set world path (implies local game if used with option --go)"))));
 284         allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
 285                         _("Set world by name (implies local game if used with option --go)"))));
 286         allowed_options->insert(std::make_pair("worldlist", ValueSpec(VALUETYPE_STRING,
 287                         _("Get list of worlds ('path' lists paths, "
 288                         "'name' lists names, 'both' lists both)"))));
 289         allowed_options->insert(std::make_pair("quiet", ValueSpec(VALUETYPE_FLAG,
 290                         _("Print to console errors only"))));
 291         allowed_options->insert(std::make_pair("color", ValueSpec(VALUETYPE_STRING,
 292                         _("Coloured logs ('always', 'never' or 'auto'), defaults to 'auto'"
 293                         ))));
 294         allowed_options->insert(std::make_pair("info", ValueSpec(VALUETYPE_FLAG,
 295                         _("Print more information to console"))));
 296         allowed_options->insert(std::make_pair("verbose",  ValueSpec(VALUETYPE_FLAG,
 297                         _("Print even more information to console"))));
 298         allowed_options->insert(std::make_pair("trace", ValueSpec(VALUETYPE_FLAG,
 299                         _("Print enormous amounts of information to log and console"))));
 300         allowed_options->insert(std::make_pair("logfile", ValueSpec(VALUETYPE_STRING,
 301                         _("Set logfile path ('' = no logging)"))));
 302         allowed_options->insert(std::make_pair("gameid", ValueSpec(VALUETYPE_STRING,
 303                         _("Set gameid (\"--gameid list\" prints available ones)"))));
 304         allowed_options->insert(std::make_pair("migrate", ValueSpec(VALUETYPE_STRING,
 305                         _("Migrate from current map backend to another (Only works when using minetestserver or with --server)"))));
 306         allowed_options->insert(std::make_pair("migrate-players", ValueSpec(VALUETYPE_STRING,
 307                 _("Migrate from current players backend to another (Only works when using minetestserver or with --server)"))));
 308         allowed_options->insert(std::make_pair("migrate-auth", ValueSpec(VALUETYPE_STRING,
 309                 _("Migrate from current auth backend to another (Only works when using minetestserver or with --server)"))));
 310         allowed_options->insert(std::make_pair("migrate-mod-storage", ValueSpec(VALUETYPE_STRING,
 311                 _("Migrate from current mod storage backend to another (Only works when using minetestserver or with --server)"))));
 312         allowed_options->insert(std::make_pair("terminal", ValueSpec(VALUETYPE_FLAG,
 313                         _("Feature an interactive terminal (Only works when using minetestserver or with --server)"))));
 314         allowed_options->insert(std::make_pair("recompress", ValueSpec(VALUETYPE_FLAG,
 315                         _("Recompress the blocks of the given map database."))));
 316 #ifndef SERVER
 317         allowed_options->insert(std::make_pair("speedtests", ValueSpec(VALUETYPE_FLAG,
 318                         _("Run speed tests"))));
 319         allowed_options->insert(std::make_pair("address", ValueSpec(VALUETYPE_STRING,
 320                         _("Address to connect to. ('' = local game)"))));
 321         allowed_options->insert(std::make_pair("random-input", ValueSpec(VALUETYPE_FLAG,
 322                         _("Enable random user input, for testing"))));
 323         allowed_options->insert(std::make_pair("server", ValueSpec(VALUETYPE_FLAG,
 324                         _("Run dedicated server"))));
 325         allowed_options->insert(std::make_pair("name", ValueSpec(VALUETYPE_STRING,
 326                         _("Set player name"))));
 327         allowed_options->insert(std::make_pair("password", ValueSpec(VALUETYPE_STRING,
 328                         _("Set password"))));
 329         allowed_options->insert(std::make_pair("password-file", ValueSpec(VALUETYPE_STRING,
 330                         _("Set password from contents of file"))));
 331         allowed_options->insert(std::make_pair("go", ValueSpec(VALUETYPE_FLAG,
 332                         _("Disable main menu"))));
 333         allowed_options->insert(std::make_pair("console", ValueSpec(VALUETYPE_FLAG,
 334                 _("Starts with the console (Windows only)"))));
 335 #endif
 336
 337 }
 338
 339 static void print_help(const OptionList &allowed_options)
 340 {
 341         std::cout << _("Allowed options:") << std::endl;
 342         print_allowed_options(allowed_options);
 343 }
 344
 345 static void print_allowed_options(const OptionList &allowed_options)
 346 {
 347         for (const auto &allowed_option : allowed_options) {
 348                 std::ostringstream os1(std::ios::binary);
 349                 os1 << "  --" << allowed_option.first;
 350                 if (allowed_option.second.type != VALUETYPE_FLAG)
 351                         os1 << _(" <value>");
 352
 353                 std::cout << padStringRight(os1.str(), 30);
 354
 355                 if (allowed_option.second.help)
 356                         std::cout << allowed_option.second.help;
 357
 358                 std::cout << std::endl;
 359         }
 360 }
 361
 362 static void print_version()
 363 {
 364         std::cout << PROJECT_NAME_C " " << g_version_hash
 365                 << " (" << porting::getPlatformName() << ")" << std::endl;
 366 #ifndef SERVER
 367         std::cout << "Using Irrlicht " IRRLICHT_SDK_VERSION << std::endl;
 368 #endif
 369 #if USE_LUAJIT
 370         std::cout << "Using " << LUAJIT_VERSION << std::endl;
 371 #else
 372         std::cout << "Using " << LUA_RELEASE << std::endl;
 373 #endif
 374         std::cout << g_build_info << std::endl;
 375 }
 376
 377 static void list_game_ids()
 378 {
 379         std::set<std::string> gameids = getAvailableGameIds();
 380         for (const std::string &gameid : gameids)
 381                 std::cout << gameid <<std::endl;
 382 }
 383
 384 static void list_worlds(bool print_name, bool print_path)
 385 {
 386         std::cout << _("Available worlds:") << std::endl;
 387         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 388         print_worldspecs(worldspecs, std::cout, print_name, print_path);
 389 }
 390
 391 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
 392         std::ostream &os, bool print_name, bool print_path)
 393 {
 394         for (const WorldSpec &worldspec : worldspecs) {
 395                 std::string name = worldspec.name;
 396                 std::string path = worldspec.path;
 397                 if (print_name && print_path) {
 398                         os << "\t" << name << "\t\t" << path << std::endl;
 399                 } else if (print_name) {
 400                         os << "\t" << name << std::endl;
 401                 } else if (print_path) {
 402                         os << "\t" << path << std::endl;
 403                 }
 404         }
 405 }
 406
 407 static void print_modified_quicktune_values()
 408 {
 409         bool header_printed = false;
 410         std::vector<std::string> names = getQuicktuneNames();
 411
 412         for (const std::string &name : names) {
 413                 QuicktuneValue val = getQuicktuneValue(name);
 414                 if (!val.modified)
 415                         continue;
 416                 if (!header_printed) {
 417                         dstream << "Modified quicktune values:" << std::endl;
 418                         header_printed = true;
 419                 }
 420                 dstream << name << " = " << val.getString() << std::endl;
 421         }
 422 }
 423
 424 static bool setup_log_params(const Settings &cmd_args)
 425 {
 426         // Quiet mode, print errors only
 427         if (cmd_args.getFlag("quiet")) {
 428                 g_logger.removeOutput(&stderr_output);
 429                 g_logger.addOutputMaxLevel(&stderr_output, LL_ERROR);
 430         }
 431
 432         // Coloured log messages (see log.h)
 433         std::string color_mode;
 434         if (cmd_args.exists("color")) {
 435                 color_mode = cmd_args.get("color");
 436 #if !defined(_WIN32)
 437         } else {
 438                 char *color_mode_env = getenv("MT_LOGCOLOR");
 439                 if (color_mode_env)
 440                         color_mode = color_mode_env;
 441 #endif
 442         }
 443         if (color_mode != "") {
 444                 if (color_mode == "auto") {
 445                         Logger::color_mode = LOG_COLOR_AUTO;
 446                 } else if (color_mode == "always") {
 447                         Logger::color_mode = LOG_COLOR_ALWAYS;
 448                 } else if (color_mode == "never") {
 449                         Logger::color_mode = LOG_COLOR_NEVER;
 450                 } else {
 451                         errorstream << "Invalid color mode: " << color_mode << std::endl;
 452                         return false;
 453                 }
 454         }
 455
 456         // In certain cases, output info level on stderr
 457         if (cmd_args.getFlag("info") || cmd_args.getFlag("verbose") ||
 458                         cmd_args.getFlag("trace") || cmd_args.getFlag("speedtests"))
 459                 g_logger.addOutput(&stderr_output, LL_INFO);
 460
 461         // In certain cases, output verbose level on stderr
 462         if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
 463                 g_logger.addOutput(&stderr_output, LL_VERBOSE);
 464
 465         if (cmd_args.getFlag("trace")) {
 466                 dstream << _("Enabling trace level debug output") << std::endl;
 467                 g_logger.addOutput(&stderr_output, LL_TRACE);
 468                 socket_enable_debug_output = true;
 469         }
 470
 471         return true;
 472 }
 473
 474 static bool create_userdata_path()
 475 {
 476         bool success;
 477
 478 #ifdef __ANDROID__
 479         if (!fs::PathExists(porting::path_user)) {
 480                 success = fs::CreateDir(porting::path_user);
 481         } else {
 482                 success = true;
 483         }
 484 #else
 485         // Create user data directory
 486         success = fs::CreateDir(porting::path_user);
 487 #endif
 488
 489         return success;
 490 }
 491
 492 static bool init_common(const Settings &cmd_args, int argc, char *argv[])
 493 {
 494         startup_message();
 495         set_default_settings();
 496
 497         sockets_init();
 498
 499         // Initialize g_settings
 500         Settings::createLayer(SL_GLOBAL);
 501
 502         // Set cleanup callback(s) to run at process exit
 503         atexit(uninit_common);
 504
 505         if (!read_config_file(cmd_args))
 506                 return false;
 507
 508         init_log_streams(cmd_args);
 509
 510         // Initialize random seed
 511         srand(time(0));
 512         mysrand(time(0));
 513
 514         // Initialize HTTP fetcher
 515         httpfetch_init(g_settings->getS32("curl_parallel_limit"));
 516
 517         init_gettext(porting::path_locale.c_str(),
 518                 g_settings->get("language"), argc, argv);
 519
 520         return true;
 521 }
 522
 523 static void uninit_common()
 524 {
 525         httpfetch_cleanup();
 526
 527         sockets_cleanup();
 528
 529         // It'd actually be okay to leak these but we want to please valgrind...
 530         for (int i = 0; i < (int)SL_TOTAL_COUNT; i++)
 531                 delete Settings::getLayer((SettingsLayer)i);
 532 }
 533
 534 static void startup_message()
 535 {
 536         infostream << PROJECT_NAME << " " << _("with")
 537                    << " SER_FMT_VER_HIGHEST_READ="
 538                << (int)SER_FMT_VER_HIGHEST_READ << ", "
 539                << g_build_info << std::endl;
 540 }
 541
 542 static bool read_config_file(const Settings &cmd_args)
 543 {
 544         // Path of configuration file in use
 545         sanity_check(g_settings_path == "");    // Sanity check
 546
 547         if (cmd_args.exists("config")) {
 548                 bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
 549                 if (!r) {
 550                         errorstream << "Could not read configuration from \""
 551                                     << cmd_args.get("config") << "\"" << std::endl;
 552                         return false;
 553                 }
 554                 g_settings_path = cmd_args.get("config");
 555         } else {
 556                 std::vector<std::string> filenames;
 557                 filenames.push_back(porting::path_user + DIR_DELIM + "minetest.conf");
 558                 // Legacy configuration file location
 559                 filenames.push_back(porting::path_user +
 560                                 DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 561
 562 #if RUN_IN_PLACE
 563                 // Try also from a lower level (to aid having the same configuration
 564                 // for many RUN_IN_PLACE installs)
 565                 filenames.push_back(porting::path_user +
 566                                 DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 567 #endif
 568
 569                 for (const std::string &filename : filenames) {
 570                         bool r = g_settings->readConfigFile(filename.c_str());
 571                         if (r) {
 572                                 g_settings_path = filename;
 573                                 break;
 574                         }
 575                 }
 576
 577                 // If no path found, use the first one (menu creates the file)
 578                 if (g_settings_path.empty())
 579                         g_settings_path = filenames[0];
 580         }
 581
 582         return true;
 583 }
 584
 585 static void init_log_streams(const Settings &cmd_args)
 586 {
 587         std::string log_filename = porting::path_user + DIR_DELIM + DEBUGFILE;
 588
 589         if (cmd_args.exists("logfile"))
 590                 log_filename = cmd_args.get("logfile");
 591
 592         g_logger.removeOutput(&file_log_output);
 593         std::string conf_loglev = g_settings->get("debug_log_level");
 594
 595         // Old integer format
 596         if (std::isdigit(conf_loglev[0])) {
 597                 warningstream << "Deprecated use of debug_log_level with an "
 598                         "integer value; please update your configuration." << std::endl;
 599                 static const char *lev_name[] =
 600                         {"", "error", "action", "info", "verbose", "trace"};
 601                 int lev_i = atoi(conf_loglev.c_str());
 602                 if (lev_i < 0 || lev_i >= (int)ARRLEN(lev_name)) {
 603                         warningstream << "Supplied invalid debug_log_level!"
 604                                 "  Assuming action level." << std::endl;
 605                         lev_i = 2;
 606                 }
 607                 conf_loglev = lev_name[lev_i];
 608         }
 609
 610         if (log_filename.empty() || conf_loglev.empty())  // No logging
 611                 return;
 612
 613         LogLevel log_level = Logger::stringToLevel(conf_loglev);
 614         if (log_level == LL_MAX) {
 615                 warningstream << "Supplied unrecognized debug_log_level; "
 616                         "using maximum." << std::endl;
 617         }
 618
 619         file_log_output.setFile(log_filename,
 620                 g_settings->getU64("debug_log_size_max") * 1000000);
 621         g_logger.addOutputMaxLevel(&file_log_output, log_level);
 622 }
 623
 624 static bool game_configure(GameParams *game_params, const Settings &cmd_args)
 625 {
 626         game_configure_port(game_params, cmd_args);
 627
 628         if (!game_configure_world(game_params, cmd_args)) {
 629                 errorstream << "No world path specified or found." << std::endl;
 630                 return false;
 631         }
 632
 633         game_configure_subgame(game_params, cmd_args);
 634
 635         return true;
 636 }
 637
 638 static void game_configure_port(GameParams *game_params, const Settings &cmd_args)
 639 {
 640         if (cmd_args.exists("port")) {
 641                 game_params->socket_port = cmd_args.getU16("port");
 642         } else {
 643                 if (game_params->is_dedicated_server)
 644                         game_params->socket_port = g_settings->getU16("port");
 645                 else
 646                         game_params->socket_port = g_settings->getU16("remote_port");
 647         }
 648
 649         if (game_params->socket_port == 0)
 650                 game_params->socket_port = DEFAULT_SERVER_PORT;
 651 }
 652
 653 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args)
 654 {
 655         if (get_world_from_cmdline(game_params, cmd_args))
 656                 return true;
 657
 658         if (get_world_from_config(game_params, cmd_args))
 659                 return true;
 660
 661         return auto_select_world(game_params);
 662 }
 663
 664 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 665 {
 666         std::string commanded_world;
 667
 668         // World name
 669         std::string commanded_worldname;
 670         if (cmd_args.exists("worldname"))
 671                 commanded_worldname = cmd_args.get("worldname");
 672
 673         // If a world name was specified, convert it to a path
 674         if (!commanded_worldname.empty()) {
 675                 // Get information about available worlds
 676                 std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 677                 bool found = false;
 678                 for (const WorldSpec &worldspec : worldspecs) {
 679                         std::string name = worldspec.name;
 680                         if (name == commanded_worldname) {
 681                                 dstream << _("Using world specified by --worldname on the "
 682                                         "command line") << std::endl;
 683                                 commanded_world = worldspec.path;
 684                                 found = true;
 685                                 break;
 686                         }
 687                 }
 688                 if (!found) {
 689                         dstream << _("World") << " '" << commanded_worldname
 690                                 << _("' not available. Available worlds:") << std::endl;
 691                         print_worldspecs(worldspecs, dstream);
 692                         return false;
 693                 }
 694
 695                 game_params->world_path = get_clean_world_path(commanded_world);
 696                 return !commanded_world.empty();
 697         }
 698
 699         if (cmd_args.exists("world"))
 700                 commanded_world = cmd_args.get("world");
 701         else if (cmd_args.exists("map-dir"))
 702                 commanded_world = cmd_args.get("map-dir");
 703         else if (cmd_args.exists("nonopt0")) // First nameless argument
 704                 commanded_world = cmd_args.get("nonopt0");
 705
 706         game_params->world_path = get_clean_world_path(commanded_world);
 707         return !commanded_world.empty();
 708 }
 709
 710 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args)
 711 {
 712         // World directory
 713         std::string commanded_world;
 714
 715         if (g_settings->exists("map-dir"))
 716                 commanded_world = g_settings->get("map-dir");
 717
 718         game_params->world_path = get_clean_world_path(commanded_world);
 719
 720         return !commanded_world.empty();
 721 }
 722
 723 static bool auto_select_world(GameParams *game_params)
 724 {
 725         // No world was specified; try to select it automatically
 726         // Get information about available worlds
 727
 728         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 729         std::string world_path;
 730
 731         // If there is only a single world, use it
 732         if (worldspecs.size() == 1) {
 733                 world_path = worldspecs[0].path;
 734                 dstream <<_("Automatically selecting world at") << " ["
 735                         << world_path << "]" << std::endl;
 736         // If there are multiple worlds, list them
 737         } else if (worldspecs.size() > 1 && game_params->is_dedicated_server) {
 738                 std::cerr << _("Multiple worlds are available.") << std::endl;
 739                 std::cerr << _("Please select one using --worldname <name>"
 740                                 " or --world <path>") << std::endl;
 741                 print_worldspecs(worldspecs, std::cerr);
 742                 return false;
 743         // If there are no worlds, automatically create a new one
 744         } else {
 745                 // This is the ultimate default world path
 746                 world_path = porting::path_user + DIR_DELIM + "worlds" +
 747                                 DIR_DELIM + "world";
 748                 infostream << "Using default world at ["
 749                            << world_path << "]" << std::endl;
 750         }
 751
 752         assert(world_path != "");       // Post-condition
 753         game_params->world_path = world_path;
 754         return true;
 755 }
 756
 757 static std::string get_clean_world_path(const std::string &path)
 758 {
 759         const std::string worldmt = "world.mt";
 760         std::string clean_path;
 761
 762         if (path.size() > worldmt.size()
 763                         && path.substr(path.size() - worldmt.size()) == worldmt) {
 764                 dstream << _("Supplied world.mt file - stripping it off.") << std::endl;
 765                 clean_path = path.substr(0, path.size() - worldmt.size());
 766         } else {
 767                 clean_path = path;
 768         }
 769         return path;
 770 }
 771
 772
 773 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args)
 774 {
 775         bool success;
 776
 777         success = get_game_from_cmdline(game_params, cmd_args);
 778         if (!success)
 779                 success = determine_subgame(game_params);
 780
 781         return success;
 782 }
 783
 784 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 785 {
 786         SubgameSpec commanded_gamespec;
 787
 788         if (cmd_args.exists("gameid")) {
 789                 std::string gameid = cmd_args.get("gameid");
 790                 commanded_gamespec = findSubgame(gameid);
 791                 if (!commanded_gamespec.isValid()) {
 792                         errorstream << "Game \"" << gameid << "\" not found" << std::endl;
 793                         return false;
 794                 }
 795                 dstream << _("Using game specified by --gameid on the command line")
 796                         << std::endl;
 797                 game_params->game_spec = commanded_gamespec;
 798                 return true;
 799         }
 800
 801         return false;
 802 }
 803
 804 static bool determine_subgame(GameParams *game_params)
 805 {
 806         SubgameSpec gamespec;
 807
 808         assert(game_params->world_path != "");  // Pre-condition
 809
 810         // If world doesn't exist
 811         if (!game_params->world_path.empty()
 812                 && !getWorldExists(game_params->world_path)) {
 813                 // Try to take gamespec from command line
 814                 if (game_params->game_spec.isValid()) {
 815                         gamespec = game_params->game_spec;
 816                         infostream << "Using commanded gameid [" << gamespec.id << "]" << std::endl;
 817                 } else { // Otherwise we will be using "minetest"
 818                         gamespec = findSubgame(g_settings->get("default_game"));
 819                         infostream << "Using default gameid [" << gamespec.id << "]" << std::endl;
 820                         if (!gamespec.isValid()) {
 821                                 errorstream << "Game specified in default_game ["
 822                                             << g_settings->get("default_game")
 823                                             << "] is invalid." << std::endl;
 824                                 return false;
 825                         }
 826                 }
 827         } else { // World exists
 828                 std::string world_gameid = getWorldGameId(game_params->world_path, false);
 829                 // If commanded to use a gameid, do so
 830                 if (game_params->game_spec.isValid()) {
 831                         gamespec = game_params->game_spec;
 832                         if (game_params->game_spec.id != world_gameid) {
 833                                 warningstream << "Using commanded gameid ["
 834                                             << gamespec.id << "]" << " instead of world gameid ["
 835                                             << world_gameid << "]" << std::endl;
 836                         }
 837                 } else {
 838                         // If world contains an embedded game, use it;
 839                         // Otherwise find world from local system.
 840                         gamespec = findWorldSubgame(game_params->world_path);
 841                         infostream << "Using world gameid [" << gamespec.id << "]" << std::endl;
 842                 }
 843         }
 844
 845         if (!gamespec.isValid()) {
 846                 errorstream << "Game [" << gamespec.id << "] could not be found."
 847                             << std::endl;
 848                 return false;
 849         }
 850
 851         game_params->game_spec = gamespec;
 852         return true;
 853 }
 854
 855
 856 /*****************************************************************************
 857  * Dedicated server
 858  *****************************************************************************/
 859 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args)
 860 {
 861         verbosestream << _("Using world path") << " ["
 862                       << game_params.world_path << "]" << std::endl;
 863         verbosestream << _("Using gameid") << " ["
 864                       << game_params.game_spec.id << "]" << std::endl;
 865
 866         // Bind address
 867         std::string bind_str = g_settings->get("bind_address");
 868         Address bind_addr(0, 0, 0, 0, game_params.socket_port);
 869
 870         if (g_settings->getBool("ipv6_server")) {
 871                 bind_addr.setAddress((IPv6AddressBytes*) NULL);
 872         }
 873         try {
 874                 bind_addr.Resolve(bind_str.c_str());
 875         } catch (ResolveError &e) {
 876                 infostream << "Resolving bind address \"" << bind_str
 877                            << "\" failed: " << e.what()
 878                            << " -- Listening on all addresses." << std::endl;
 879         }
 880         if (bind_addr.isIPv6() && !g_settings->getBool("enable_ipv6")) {
 881                 errorstream << "Unable to listen on "
 882                             << bind_addr.serializeString()
 883                             << L" because IPv6 is disabled" << std::endl;
 884                 return false;
 885         }
 886
 887         // Database migration/compression
 888         if (cmd_args.exists("migrate"))
 889                 return migrate_map_database(game_params, cmd_args);
 890
 891         if (cmd_args.exists("migrate-players"))
 892                 return ServerEnvironment::migratePlayersDatabase(game_params, cmd_args);
 893
 894         if (cmd_args.exists("migrate-auth"))
 895                 return ServerEnvironment::migrateAuthDatabase(game_params, cmd_args);
 896
 897         if (cmd_args.exists("migrate-mod-storage"))
 898                 return Server::migrateModStorageDatabase(game_params, cmd_args);
 899
 900         if (cmd_args.getFlag("recompress"))
 901                 return recompress_map_database(game_params, cmd_args, bind_addr);
 902
 903         if (cmd_args.exists("terminal")) {
 904 #if USE_CURSES
 905                 bool name_ok = true;
 906                 std::string admin_nick = g_settings->get("name");
 907
 908                 name_ok = name_ok && !admin_nick.empty();
 909                 name_ok = name_ok && string_allowed(admin_nick, PLAYERNAME_ALLOWED_CHARS);
 910
 911                 if (!name_ok) {
 912                         if (admin_nick.empty()) {
 913                                 errorstream << "No name given for admin. "
 914                                         << "Please check your minetest.conf that it "
 915                                         << "contains a 'name = ' to your main admin account."
 916                                         << std::endl;
 917                         } else {
 918                                 errorstream << "Name for admin '"
 919                                         << admin_nick << "' is not valid. "
 920                                         << "Please check that it only contains allowed characters. "
 921                                         << "Valid characters are: " << PLAYERNAME_ALLOWED_CHARS_USER_EXPL
 922                                         << std::endl;
 923                         }
 924                         return false;
 925                 }
 926                 ChatInterface iface;
 927                 bool &kill = *porting::signal_handler_killstatus();
 928
 929                 try {
 930                         // Create server
 931                         Server server(game_params.world_path, game_params.game_spec,
 932                                         false, bind_addr, true, &iface);
 933
 934                         g_term_console.setup(&iface, &kill, admin_nick);
 935
 936                         g_term_console.start();
 937
 938                         server.start();
 939                         // Run server
 940                         dedicated_server_loop(server, kill);
 941                 } catch (const ModError &e) {
 942                         g_term_console.stopAndWaitforThread();
 943                         errorstream << "ModError: " << e.what() << std::endl;
 944                         return false;
 945                 } catch (const ServerError &e) {
 946                         g_term_console.stopAndWaitforThread();
 947                         errorstream << "ServerError: " << e.what() << std::endl;
 948                         return false;
 949                 }
 950
 951                 // Tell the console to stop, and wait for it to finish,
 952                 // only then leave context and free iface
 953                 g_term_console.stop();
 954                 g_term_console.wait();
 955
 956                 g_term_console.clearKillStatus();
 957         } else {
 958 #else
 959                 errorstream << "Cmd arg --terminal passed, but "
 960                         << "compiled without ncurses. Ignoring." << std::endl;
 961         } {
 962 #endif
 963                 try {
 964                         // Create server
 965                         Server server(game_params.world_path, game_params.game_spec, false,
 966                                 bind_addr, true);
 967                         server.start();
 968
 969                         // Run server
 970                         bool &kill = *porting::signal_handler_killstatus();
 971                         dedicated_server_loop(server, kill);
 972
 973                 } catch (const ModError &e) {
 974                         errorstream << "ModError: " << e.what() << std::endl;
 975                         return false;
 976                 } catch (const ServerError &e) {
 977                         errorstream << "ServerError: " << e.what() << std::endl;
 978                         return false;
 979                 }
 980         }
 981
 982         return true;
 983 }
 984
 985 static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args)
 986 {
 987         std::string migrate_to = cmd_args.get("migrate");
 988         Settings world_mt;
 989         std::string world_mt_path = game_params.world_path + DIR_DELIM + "world.mt";
 990         if (!world_mt.readConfigFile(world_mt_path.c_str())) {
 991                 errorstream << "Cannot read world.mt!" << std::endl;
 992                 return false;
 993         }
 994
 995         if (!world_mt.exists("backend")) {
 996                 errorstream << "Please specify your current backend in world.mt:"
 997                         << std::endl
 998                         << "    backend = {sqlite3|leveldb|redis|dummy|postgresql}"
 999                         << std::endl;
1000                 return false;
1001         }
1002
1003         std::string backend = world_mt.get("backend");
1004         if (backend == migrate_to) {
1005                 errorstream << "Cannot migrate: new backend is same"
1006                         << " as the old one" << std::endl;
1007                 return false;
1008         }
1009
1010         MapDatabase *old_db = ServerMap::createDatabase(backend, game_params.world_path, world_mt),
1011                 *new_db = ServerMap::createDatabase(migrate_to, game_params.world_path, world_mt);
1012
1013         u32 count = 0;
1014         time_t last_update_time = 0;
1015         bool &kill = *porting::signal_handler_killstatus();
1016
1017         std::vector<v3s16> blocks;
1018         old_db->listAllLoadableBlocks(blocks);
1019         new_db->beginSave();
1020         for (std::vector<v3s16>::const_iterator it = blocks.begin(); it != blocks.end(); ++it) {
1021                 if (kill) return false;
1022
1023                 std::string data;
1024                 old_db->loadBlock(*it, &data);
1025                 if (!data.empty()) {
1026                         new_db->saveBlock(*it, data);
1027                 } else {
1028                         errorstream << "Failed to load block " << PP(*it) << ", skipping it." << std::endl;
1029                 }
1030                 if (++count % 0xFF == 0 && time(NULL) - last_update_time >= 1) {
1031                         std::cerr << " Migrated " << count << " blocks, "
1032                                 << (100.0 * count / blocks.size()) << "% completed.\r";
1033                         new_db->endSave();
1034                         new_db->beginSave();
1035                         last_update_time = time(NULL);
1036                 }
1037         }
1038         std::cerr << std::endl;
1039         new_db->endSave();
1040         delete old_db;
1041         delete new_db;
1042
1043         actionstream << "Successfully migrated " << count << " blocks" << std::endl;
1044         world_mt.set("backend", migrate_to);
1045         if (!world_mt.updateConfigFile(world_mt_path.c_str()))
1046                 errorstream << "Failed to update world.mt!" << std::endl;
1047         else
1048                 actionstream << "world.mt updated" << std::endl;
1049
1050         return true;
1051 }
1052
1053 static bool recompress_map_database(const GameParams &game_params, const Settings &cmd_args, const Address &addr)
1054 {
1055         Settings world_mt;
1056         const std::string world_mt_path = game_params.world_path + DIR_DELIM + "world.mt";
1057
1058         if (!world_mt.readConfigFile(world_mt_path.c_str())) {
1059                 errorstream << "Cannot read world.mt at " << world_mt_path << std::endl;
1060                 return false;
1061         }
1062         const std::string &backend = world_mt.get("backend");
1063         Server server(game_params.world_path, game_params.game_spec, false, addr, false);
1064         MapDatabase *db = ServerMap::createDatabase(backend, game_params.world_path, world_mt);
1065
1066         u32 count = 0;
1067         u64 last_update_time = 0;
1068         bool &kill = *porting::signal_handler_killstatus();
1069         const u8 serialize_as_ver = SER_FMT_VER_HIGHEST_WRITE;
1070
1071         // This is ok because the server doesn't actually run
1072         std::vector<v3s16> blocks;
1073         db->listAllLoadableBlocks(blocks);
1074         db->beginSave();
1075         std::istringstream iss(std::ios_base::binary);
1076         std::ostringstream oss(std::ios_base::binary);
1077         for (auto it = blocks.begin(); it != blocks.end(); ++it) {
1078                 if (kill) return false;
1079
1080                 std::string data;
1081                 db->loadBlock(*it, &data);
1082                 if (data.empty()) {
1083                         errorstream << "Failed to load block " << PP(*it) << std::endl;
1084                         return false;
1085                 }
1086
1087                 iss.str(data);
1088                 iss.clear();
1089
1090                 MapBlock mb(nullptr, v3s16(0,0,0), &server);
1091                 u8 ver = readU8(iss);
1092                 mb.deSerialize(iss, ver, true);
1093
1094                 oss.str("");
1095                 oss.clear();
1096                 writeU8(oss, serialize_as_ver);
1097                 mb.serialize(oss, serialize_as_ver, true, -1);
1098
1099                 db->saveBlock(*it, oss.str());
1100
1101                 count++;
1102                 if (count % 0xFF == 0 && porting::getTimeS() - last_update_time >= 1) {
1103                         std::cerr << " Recompressed " << count << " blocks, "
1104                                 << (100.0f * count / blocks.size()) << "% completed.\r";
1105                         db->endSave();
1106                         db->beginSave();
1107                         last_update_time = porting::getTimeS();
1108                 }
1109         }
1110         std::cerr << std::endl;
1111         db->endSave();
1112
1113         actionstream << "Done, " << count << " blocks were recompressed." << std::endl;
1114         return true;
1115 }