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