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 #ifdef _MSC_VER
  21         #ifndef SERVER // Dedicated server isn't linked with Irrlicht
  22                 #pragma comment(lib, "Irrlicht.lib")
  23                 // This would get rid of the console window
  24                 //#pragma comment(linker, "/subsystem:windows /ENTRY:mainCRTStartup")
  25         #endif
  26         #pragma comment(lib, "zlibwapi.lib")
  27         #pragma comment(lib, "Shell32.lib")
  28 #endif
  29
  30 #include "irrlicht.h" // createDevice
  31
  32 #include "mainmenumanager.h"
  33 #include "irrlichttypes_extrabloated.h"
  34 #include "debug.h"
  35 #include "unittest/test.h"
  36 #include "server.h"
  37 #include "filesys.h"
  38 #include "version.h"
  39 #include "guiMainMenu.h"
  40 #include "game.h"
  41 #include "defaultsettings.h"
  42 #include "gettext.h"
  43 #include "log.h"
  44 #include "quicktune.h"
  45 #include "httpfetch.h"
  46 #include "guiEngine.h"
  47 #include "map.h"
  48 #include "player.h"
  49 #include "mapsector.h"
  50 #include "fontengine.h"
  51 #include "gameparams.h"
  52 #include "database.h"
  53 #include "config.h"
  54 #if USE_CURSES
  55         #include "terminal_chat_console.h"
  56 #endif
  57 #ifndef SERVER
  58 #include "client/clientlauncher.h"
  59 #endif
  60
  61 #ifdef HAVE_TOUCHSCREENGUI
  62         #include "touchscreengui.h"
  63 #endif
  64
  65 #if !defined(SERVER) && \
  66         (IRRLICHT_VERSION_MAJOR == 1) && \
  67         (IRRLICHT_VERSION_MINOR == 8) && \
  68         (IRRLICHT_VERSION_REVISION == 2)
  69         #error "Irrlicht 1.8.2 is known to be broken - please update Irrlicht to version >= 1.8.3"
  70 #endif
  71
  72 #define DEBUGFILE "debug.txt"
  73 #define DEFAULT_SERVER_PORT 30000
  74
  75 typedef std::map<std::string, ValueSpec> OptionList;
  76
  77 /**********************************************************************
  78  * Private functions
  79  **********************************************************************/
  80
  81 static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args);
  82 static void set_allowed_options(OptionList *allowed_options);
  83
  84 static void print_help(const OptionList &allowed_options);
  85 static void print_allowed_options(const OptionList &allowed_options);
  86 static void print_version();
  87 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
  88                                                          std::ostream &os);
  89 static void print_modified_quicktune_values();
  90
  91 static void list_game_ids();
  92 static void list_worlds();
  93 static void setup_log_params(const Settings &cmd_args);
  94 static bool create_userdata_path();
  95 static bool init_common(const Settings &cmd_args, int argc, char *argv[]);
  96 static void startup_message();
  97 static bool read_config_file(const Settings &cmd_args);
  98 static void init_log_streams(const Settings &cmd_args);
  99
 100 static bool game_configure(GameParams *game_params, const Settings &cmd_args);
 101 static void game_configure_port(GameParams *game_params, const Settings &cmd_args);
 102
 103 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args);
 104 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args);
 105 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args);
 106 static bool auto_select_world(GameParams *game_params);
 107 static std::string get_clean_world_path(const std::string &path);
 108
 109 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args);
 110 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args);
 111 static bool determine_subgame(GameParams *game_params);
 112
 113 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args);
 114 static bool migrate_database(const GameParams &game_params, const Settings &cmd_args);
 115
 116 /**********************************************************************/
 117
 118 /*
 119         gettime.h implementation
 120 */
 121
 122 #ifdef SERVER
 123
 124 u32 getTimeMs()
 125 {
 126         /* Use imprecise system calls directly (from porting.h) */
 127         return porting::getTime(PRECISION_MILLI);
 128 }
 129
 130 u32 getTime(TimePrecision prec)
 131 {
 132         return porting::getTime(prec);
 133 }
 134
 135 #endif
 136
 137 FileLogOutput file_log_output;
 138
 139 static OptionList allowed_options;
 140
 141 int main(int argc, char *argv[])
 142 {
 143         int retval;
 144
 145         debug_set_exception_handler();
 146
 147         g_logger.registerThread("Main");
 148         g_logger.addOutputMaxLevel(&stderr_output, LL_ACTION);
 149
 150         Settings cmd_args;
 151         bool cmd_args_ok = get_cmdline_opts(argc, argv, &cmd_args);
 152         if (!cmd_args_ok
 153                         || cmd_args.getFlag("help")
 154                         || cmd_args.exists("nonopt1")) {
 155                 print_help(allowed_options);
 156                 return cmd_args_ok ? 0 : 1;
 157         }
 158
 159         if (cmd_args.getFlag("version")) {
 160                 print_version();
 161                 return 0;
 162         }
 163
 164         setup_log_params(cmd_args);
 165
 166         porting::signal_handler_init();
 167
 168 #ifdef __ANDROID__
 169         porting::initAndroid();
 170         porting::initializePathsAndroid();
 171 #else
 172         porting::initializePaths();
 173 #endif
 174
 175         if (!create_userdata_path()) {
 176                 errorstream << "Cannot create user data directory" << std::endl;
 177                 return 1;
 178         }
 179
 180         // Initialize debug stacks
 181         DSTACK(FUNCTION_NAME);
 182
 183         // Debug handler
 184         BEGIN_DEBUG_EXCEPTION_HANDLER
 185
 186         // List gameids if requested
 187         if (cmd_args.exists("gameid") && cmd_args.get("gameid") == "list") {
 188                 list_game_ids();
 189                 return 0;
 190         }
 191
 192         // List worlds if requested
 193         if (cmd_args.exists("world") && cmd_args.get("world") == "list") {
 194                 list_worlds();
 195                 return 0;
 196         }
 197
 198         if (!init_common(cmd_args, argc, argv))
 199                 return 1;
 200
 201 #ifndef __ANDROID__
 202         // Run unit tests
 203         if (cmd_args.getFlag("run-unittests")) {
 204                 return run_tests();
 205         }
 206 #endif
 207
 208         GameParams game_params;
 209 #ifdef SERVER
 210         game_params.is_dedicated_server = true;
 211 #else
 212         game_params.is_dedicated_server = cmd_args.getFlag("server");
 213 #endif
 214
 215         if (!game_configure(&game_params, cmd_args))
 216                 return 1;
 217
 218         sanity_check(!game_params.world_path.empty());
 219
 220         infostream << "Using commanded world path ["
 221                    << game_params.world_path << "]" << std::endl;
 222
 223         //Run dedicated server if asked to or no other option
 224         g_settings->set("server_dedicated",
 225                         game_params.is_dedicated_server ? "true" : "false");
 226
 227         if (game_params.is_dedicated_server)
 228                 return run_dedicated_server(game_params, cmd_args) ? 0 : 1;
 229
 230 #ifndef SERVER
 231         ClientLauncher launcher;
 232         retval = launcher.run(game_params, cmd_args) ? 0 : 1;
 233 #else
 234         retval = 0;
 235 #endif
 236
 237         // Update configuration file
 238         if (g_settings_path != "")
 239                 g_settings->updateConfigFile(g_settings_path.c_str());
 240
 241         print_modified_quicktune_values();
 242
 243         // Stop httpfetch thread (if started)
 244         httpfetch_cleanup();
 245
 246         END_DEBUG_EXCEPTION_HANDLER
 247
 248         return retval;
 249 }
 250
 251
 252 /*****************************************************************************
 253  * Startup / Init
 254  *****************************************************************************/
 255
 256
 257 static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args)
 258 {
 259         set_allowed_options(&allowed_options);
 260
 261         return cmd_args->parseCommandLine(argc, argv, allowed_options);
 262 }
 263
 264 static void set_allowed_options(OptionList *allowed_options)
 265 {
 266         allowed_options->clear();
 267
 268         allowed_options->insert(std::make_pair("help", ValueSpec(VALUETYPE_FLAG,
 269                         _("Show allowed options"))));
 270         allowed_options->insert(std::make_pair("version", ValueSpec(VALUETYPE_FLAG,
 271                         _("Show version information"))));
 272         allowed_options->insert(std::make_pair("config", ValueSpec(VALUETYPE_STRING,
 273                         _("Load configuration from specified file"))));
 274         allowed_options->insert(std::make_pair("port", ValueSpec(VALUETYPE_STRING,
 275                         _("Set network port (UDP)"))));
 276         allowed_options->insert(std::make_pair("run-unittests", ValueSpec(VALUETYPE_FLAG,
 277                         _("Run the unit tests and exit"))));
 278         allowed_options->insert(std::make_pair("map-dir", ValueSpec(VALUETYPE_STRING,
 279                         _("Same as --world (deprecated)"))));
 280         allowed_options->insert(std::make_pair("world", ValueSpec(VALUETYPE_STRING,
 281                         _("Set world path (implies local game) ('list' lists all)"))));
 282         allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
 283                         _("Set world by name (implies local game)"))));
 284         allowed_options->insert(std::make_pair("quiet", ValueSpec(VALUETYPE_FLAG,
 285                         _("Print to console errors only"))));
 286         allowed_options->insert(std::make_pair("info", ValueSpec(VALUETYPE_FLAG,
 287                         _("Print more information to console"))));
 288         allowed_options->insert(std::make_pair("verbose",  ValueSpec(VALUETYPE_FLAG,
 289                         _("Print even more information to console"))));
 290         allowed_options->insert(std::make_pair("trace", ValueSpec(VALUETYPE_FLAG,
 291                         _("Print enormous amounts of information to log and console"))));
 292         allowed_options->insert(std::make_pair("logfile", ValueSpec(VALUETYPE_STRING,
 293                         _("Set logfile path ('' = no logging)"))));
 294         allowed_options->insert(std::make_pair("gameid", ValueSpec(VALUETYPE_STRING,
 295                         _("Set gameid (\"--gameid list\" prints available ones)"))));
 296         allowed_options->insert(std::make_pair("migrate", ValueSpec(VALUETYPE_STRING,
 297                         _("Migrate from current map 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 #endif
 318
 319 }
 320
 321 static void print_help(const OptionList &allowed_options)
 322 {
 323         std::cout << _("Allowed options:") << std::endl;
 324         print_allowed_options(allowed_options);
 325 }
 326
 327 static void print_allowed_options(const OptionList &allowed_options)
 328 {
 329         for (OptionList::const_iterator i = allowed_options.begin();
 330                         i != allowed_options.end(); ++i) {
 331                 std::ostringstream os1(std::ios::binary);
 332                 os1 << "  --" << i->first;
 333                 if (i->second.type != VALUETYPE_FLAG)
 334                         os1 << _(" <value>");
 335
 336                 std::cout << padStringRight(os1.str(), 24);
 337
 338                 if (i->second.help != NULL)
 339                         std::cout << i->second.help;
 340
 341                 std::cout << std::endl;
 342         }
 343 }
 344
 345 static void print_version()
 346 {
 347         std::cout << PROJECT_NAME_C " " << g_version_hash
 348                   << " (" << porting::getPlatformName() << ")" << std::endl;
 349 #ifndef SERVER
 350         std::cout << "Using Irrlicht " << IRRLICHT_SDK_VERSION << std::endl;
 351 #endif
 352         std::cout << "Build info: " << g_build_info << std::endl;
 353 }
 354
 355 static void list_game_ids()
 356 {
 357         std::set<std::string> gameids = getAvailableGameIds();
 358         for (std::set<std::string>::const_iterator i = gameids.begin();
 359                         i != gameids.end(); ++i)
 360                 std::cout << (*i) <<std::endl;
 361 }
 362
 363 static void list_worlds()
 364 {
 365         std::cout << _("Available worlds:") << std::endl;
 366         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 367         print_worldspecs(worldspecs, std::cout);
 368 }
 369
 370 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
 371                                                          std::ostream &os)
 372 {
 373         for (size_t i = 0; i < worldspecs.size(); i++) {
 374                 std::string name = worldspecs[i].name;
 375                 std::string path = worldspecs[i].path;
 376                 if (name.find(" ") != std::string::npos)
 377                         name = std::string("'") + name + "'";
 378                 path = std::string("'") + path + "'";
 379                 name = padStringRight(name, 14);
 380                 os << "  " << name << " " << path << std::endl;
 381         }
 382 }
 383
 384 static void print_modified_quicktune_values()
 385 {
 386         bool header_printed = false;
 387         std::vector<std::string> names = getQuicktuneNames();
 388
 389         for (u32 i = 0; i < names.size(); i++) {
 390                 QuicktuneValue val = getQuicktuneValue(names[i]);
 391                 if (!val.modified)
 392                         continue;
 393                 if (!header_printed) {
 394                         dstream << "Modified quicktune values:" << std::endl;
 395                         header_printed = true;
 396                 }
 397                 dstream << names[i] << " = " << val.getString() << std::endl;
 398         }
 399 }
 400
 401 static void setup_log_params(const Settings &cmd_args)
 402 {
 403         // Quiet mode, print errors only
 404         if (cmd_args.getFlag("quiet")) {
 405                 g_logger.removeOutput(&stderr_output);
 406                 g_logger.addOutputMaxLevel(&stderr_output, LL_ERROR);
 407         }
 408
 409         // If trace is enabled, enable logging of certain things
 410         if (cmd_args.getFlag("trace")) {
 411                 dstream << _("Enabling trace level debug output") << std::endl;
 412                 g_logger.setTraceEnabled(true);
 413                 dout_con_ptr = &verbosestream; // This is somewhat old
 414                 socket_enable_debug_output = true; // Sockets doesn't use log.h
 415         }
 416
 417         // In certain cases, output info level on stderr
 418         if (cmd_args.getFlag("info") || cmd_args.getFlag("verbose") ||
 419                         cmd_args.getFlag("trace") || cmd_args.getFlag("speedtests"))
 420                 g_logger.addOutput(&stderr_output, LL_INFO);
 421
 422         // In certain cases, output verbose level on stderr
 423         if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
 424                 g_logger.addOutput(&stderr_output, LL_VERBOSE);
 425 }
 426
 427 static bool create_userdata_path()
 428 {
 429         bool success;
 430
 431 #ifdef __ANDROID__
 432         if (!fs::PathExists(porting::path_user)) {
 433                 success = fs::CreateDir(porting::path_user);
 434         } else {
 435                 success = true;
 436         }
 437         porting::copyAssets();
 438 #else
 439         // Create user data directory
 440         success = fs::CreateDir(porting::path_user);
 441 #endif
 442
 443         return success;
 444 }
 445
 446 static bool init_common(const Settings &cmd_args, int argc, char *argv[])
 447 {
 448         startup_message();
 449         set_default_settings(g_settings);
 450
 451         // Initialize sockets
 452         sockets_init();
 453         atexit(sockets_cleanup);
 454
 455         if (!read_config_file(cmd_args))
 456                 return false;
 457
 458         init_log_streams(cmd_args);
 459
 460         // Initialize random seed
 461         srand(time(0));
 462         mysrand(time(0));
 463
 464         // Initialize HTTP fetcher
 465         httpfetch_init(g_settings->getS32("curl_parallel_limit"));
 466
 467         init_gettext(porting::path_locale.c_str(),
 468                 g_settings->get("language"), argc, argv);
 469
 470         return true;
 471 }
 472
 473 static void startup_message()
 474 {
 475         infostream << PROJECT_NAME << " " << _("with")
 476                    << " SER_FMT_VER_HIGHEST_READ="
 477                << (int)SER_FMT_VER_HIGHEST_READ << ", "
 478                << g_build_info << std::endl;
 479 }
 480
 481 static bool read_config_file(const Settings &cmd_args)
 482 {
 483         // Path of configuration file in use
 484         sanity_check(g_settings_path == "");    // Sanity check
 485
 486         if (cmd_args.exists("config")) {
 487                 bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
 488                 if (!r) {
 489                         errorstream << "Could not read configuration from \""
 490                                     << cmd_args.get("config") << "\"" << std::endl;
 491                         return false;
 492                 }
 493                 g_settings_path = cmd_args.get("config");
 494         } else {
 495                 std::vector<std::string> filenames;
 496                 filenames.push_back(porting::path_user + DIR_DELIM + "minetest.conf");
 497                 // Legacy configuration file location
 498                 filenames.push_back(porting::path_user +
 499                                 DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 500
 501 #if RUN_IN_PLACE
 502                 // Try also from a lower level (to aid having the same configuration
 503                 // for many RUN_IN_PLACE installs)
 504                 filenames.push_back(porting::path_user +
 505                                 DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 506 #endif
 507
 508                 for (size_t i = 0; i < filenames.size(); i++) {
 509                         bool r = g_settings->readConfigFile(filenames[i].c_str());
 510                         if (r) {
 511                                 g_settings_path = filenames[i];
 512                                 break;
 513                         }
 514                 }
 515
 516                 // If no path found, use the first one (menu creates the file)
 517                 if (g_settings_path == "")
 518                         g_settings_path = filenames[0];
 519         }
 520
 521         return true;
 522 }
 523
 524 static void init_log_streams(const Settings &cmd_args)
 525 {
 526 #if RUN_IN_PLACE
 527         std::string log_filename = DEBUGFILE;
 528 #else
 529         std::string log_filename = porting::path_user + DIR_DELIM + DEBUGFILE;
 530 #endif
 531         if (cmd_args.exists("logfile"))
 532                 log_filename = cmd_args.get("logfile");
 533
 534         g_logger.removeOutput(&file_log_output);
 535         std::string conf_loglev = g_settings->get("debug_log_level");
 536
 537         // Old integer format
 538         if (std::isdigit(conf_loglev[0])) {
 539                 warningstream << "Deprecated use of debug_log_level with an "
 540                         "integer value; please update your configuration." << std::endl;
 541                 static const char *lev_name[] =
 542                         {"", "error", "action", "info", "verbose"};
 543                 int lev_i = atoi(conf_loglev.c_str());
 544                 if (lev_i < 0 || lev_i >= (int)ARRLEN(lev_name)) {
 545                         warningstream << "Supplied invalid debug_log_level!"
 546                                 "  Assuming action level." << std::endl;
 547                         lev_i = 2;
 548                 }
 549                 conf_loglev = lev_name[lev_i];
 550         }
 551
 552         if (log_filename.empty() || conf_loglev.empty())  // No logging
 553                 return;
 554
 555         LogLevel log_level = Logger::stringToLevel(conf_loglev);
 556         if (log_level == LL_MAX) {
 557                 warningstream << "Supplied unrecognized debug_log_level; "
 558                         "using maximum." << std::endl;
 559         }
 560
 561         verbosestream << "log_filename = " << log_filename << std::endl;
 562
 563         file_log_output.open(log_filename.c_str());
 564         g_logger.addOutputMaxLevel(&file_log_output, log_level);
 565 }
 566
 567 static bool game_configure(GameParams *game_params, const Settings &cmd_args)
 568 {
 569         game_configure_port(game_params, cmd_args);
 570
 571         if (!game_configure_world(game_params, cmd_args)) {
 572                 errorstream << "No world path specified or found." << std::endl;
 573                 return false;
 574         }
 575
 576         game_configure_subgame(game_params, cmd_args);
 577
 578         return true;
 579 }
 580
 581 static void game_configure_port(GameParams *game_params, const Settings &cmd_args)
 582 {
 583         if (cmd_args.exists("port"))
 584                 game_params->socket_port = cmd_args.getU16("port");
 585         else
 586                 game_params->socket_port = g_settings->getU16("port");
 587
 588         if (game_params->socket_port == 0)
 589                 game_params->socket_port = DEFAULT_SERVER_PORT;
 590 }
 591
 592 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args)
 593 {
 594         if (get_world_from_cmdline(game_params, cmd_args))
 595                 return true;
 596         if (get_world_from_config(game_params, cmd_args))
 597                 return true;
 598
 599         return auto_select_world(game_params);
 600 }
 601
 602 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 603 {
 604         std::string commanded_world = "";
 605
 606         // World name
 607         std::string commanded_worldname = "";
 608         if (cmd_args.exists("worldname"))
 609                 commanded_worldname = cmd_args.get("worldname");
 610
 611         // If a world name was specified, convert it to a path
 612         if (commanded_worldname != "") {
 613                 // Get information about available worlds
 614                 std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 615                 bool found = false;
 616                 for (u32 i = 0; i < worldspecs.size(); i++) {
 617                         std::string name = worldspecs[i].name;
 618                         if (name == commanded_worldname) {
 619                                 dstream << _("Using world specified by --worldname on the "
 620                                         "command line") << std::endl;
 621                                 commanded_world = worldspecs[i].path;
 622                                 found = true;
 623                                 break;
 624                         }
 625                 }
 626                 if (!found) {
 627                         dstream << _("World") << " '" << commanded_worldname
 628                                 << _("' not available. Available worlds:") << std::endl;
 629                         print_worldspecs(worldspecs, dstream);
 630                         return false;
 631                 }
 632
 633                 game_params->world_path = get_clean_world_path(commanded_world);
 634                 return commanded_world != "";
 635         }
 636
 637         if (cmd_args.exists("world"))
 638                 commanded_world = cmd_args.get("world");
 639         else if (cmd_args.exists("map-dir"))
 640                 commanded_world = cmd_args.get("map-dir");
 641         else if (cmd_args.exists("nonopt0")) // First nameless argument
 642                 commanded_world = cmd_args.get("nonopt0");
 643
 644         game_params->world_path = get_clean_world_path(commanded_world);
 645         return commanded_world != "";
 646 }
 647
 648 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args)
 649 {
 650         // World directory
 651         std::string commanded_world = "";
 652
 653         if (g_settings->exists("map-dir"))
 654                 commanded_world = g_settings->get("map-dir");
 655
 656         game_params->world_path = get_clean_world_path(commanded_world);
 657
 658         return commanded_world != "";
 659 }
 660
 661 static bool auto_select_world(GameParams *game_params)
 662 {
 663         // No world was specified; try to select it automatically
 664         // Get information about available worlds
 665
 666         verbosestream << _("Determining world path") << std::endl;
 667
 668         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 669         std::string world_path;
 670
 671         // If there is only a single world, use it
 672         if (worldspecs.size() == 1) {
 673                 world_path = worldspecs[0].path;
 674                 dstream <<_("Automatically selecting world at") << " ["
 675                         << world_path << "]" << std::endl;
 676         // If there are multiple worlds, list them
 677         } else if (worldspecs.size() > 1 && game_params->is_dedicated_server) {
 678                 std::cerr << _("Multiple worlds are available.") << std::endl;
 679                 std::cerr << _("Please select one using --worldname <name>"
 680                                 " or --world <path>") << std::endl;
 681                 print_worldspecs(worldspecs, std::cerr);
 682                 return false;
 683         // If there are no worlds, automatically create a new one
 684         } else {
 685                 // This is the ultimate default world path
 686                 world_path = porting::path_user + DIR_DELIM + "worlds" +
 687                                 DIR_DELIM + "world";
 688                 infostream << "Creating default world at ["
 689                            << world_path << "]" << std::endl;
 690         }
 691
 692         assert(world_path != "");       // Post-condition
 693         game_params->world_path = world_path;
 694         return true;
 695 }
 696
 697 static std::string get_clean_world_path(const std::string &path)
 698 {
 699         const std::string worldmt = "world.mt";
 700         std::string clean_path;
 701
 702         if (path.size() > worldmt.size()
 703                         && path.substr(path.size() - worldmt.size()) == worldmt) {
 704                 dstream << _("Supplied world.mt file - stripping it off.") << std::endl;
 705                 clean_path = path.substr(0, path.size() - worldmt.size());
 706         } else {
 707                 clean_path = path;
 708         }
 709         return path;
 710 }
 711
 712
 713 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args)
 714 {
 715         bool success;
 716
 717         success = get_game_from_cmdline(game_params, cmd_args);
 718         if (!success)
 719                 success = determine_subgame(game_params);
 720
 721         return success;
 722 }
 723
 724 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 725 {
 726         SubgameSpec commanded_gamespec;
 727
 728         if (cmd_args.exists("gameid")) {
 729                 std::string gameid = cmd_args.get("gameid");
 730                 commanded_gamespec = findSubgame(gameid);
 731                 if (!commanded_gamespec.isValid()) {
 732                         errorstream << "Game \"" << gameid << "\" not found" << std::endl;
 733                         return false;
 734                 }
 735                 dstream << _("Using game specified by --gameid on the command line")
 736                         << std::endl;
 737                 game_params->game_spec = commanded_gamespec;
 738                 return true;
 739         }
 740
 741         return false;
 742 }
 743
 744 static bool determine_subgame(GameParams *game_params)
 745 {
 746         SubgameSpec gamespec;
 747
 748         assert(game_params->world_path != "");  // Pre-condition
 749
 750         verbosestream << _("Determining gameid/gamespec") << std::endl;
 751         // If world doesn't exist
 752         if (game_params->world_path != ""
 753                         && !getWorldExists(game_params->world_path)) {
 754                 // Try to take gamespec from command line
 755                 if (game_params->game_spec.isValid()) {
 756                         gamespec = game_params->game_spec;
 757                         infostream << "Using commanded gameid [" << gamespec.id << "]" << std::endl;
 758                 } else { // Otherwise we will be using "minetest"
 759                         gamespec = findSubgame(g_settings->get("default_game"));
 760                         infostream << "Using default gameid [" << gamespec.id << "]" << std::endl;
 761                         if (!gamespec.isValid()) {
 762                                 errorstream << "Subgame specified in default_game ["
 763                                             << g_settings->get("default_game")
 764                                             << "] is invalid." << std::endl;
 765                                 return false;
 766                         }
 767                 }
 768         } else { // World exists
 769                 std::string world_gameid = getWorldGameId(game_params->world_path, false);
 770                 // If commanded to use a gameid, do so
 771                 if (game_params->game_spec.isValid()) {
 772                         gamespec = game_params->game_spec;
 773                         if (game_params->game_spec.id != world_gameid) {
 774                                 warningstream << "Using commanded gameid ["
 775                                             << gamespec.id << "]" << " instead of world gameid ["
 776                                             << world_gameid << "]" << std::endl;
 777                         }
 778                 } else {
 779                         // If world contains an embedded game, use it;
 780                         // Otherwise find world from local system.
 781                         gamespec = findWorldSubgame(game_params->world_path);
 782                         infostream << "Using world gameid [" << gamespec.id << "]" << std::endl;
 783                 }
 784         }
 785
 786         if (!gamespec.isValid()) {
 787                 errorstream << "Subgame [" << gamespec.id << "] could not be found."
 788                             << std::endl;
 789                 return false;
 790         }
 791
 792         game_params->game_spec = gamespec;
 793         return true;
 794 }
 795
 796
 797 /*****************************************************************************
 798  * Dedicated server
 799  *****************************************************************************/
 800 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args)
 801 {
 802         DSTACK("Dedicated server branch");
 803
 804         verbosestream << _("Using world path") << " ["
 805                       << game_params.world_path << "]" << std::endl;
 806         verbosestream << _("Using gameid") << " ["
 807                       << game_params.game_spec.id << "]" << std::endl;
 808
 809         // Bind address
 810         std::string bind_str = g_settings->get("bind_address");
 811         Address bind_addr(0, 0, 0, 0, game_params.socket_port);
 812
 813         if (g_settings->getBool("ipv6_server")) {
 814                 bind_addr.setAddress((IPv6AddressBytes*) NULL);
 815         }
 816         try {
 817                 bind_addr.Resolve(bind_str.c_str());
 818         } catch (ResolveError &e) {
 819                 infostream << "Resolving bind address \"" << bind_str
 820                            << "\" failed: " << e.what()
 821                            << " -- Listening on all addresses." << std::endl;
 822         }
 823         if (bind_addr.isIPv6() && !g_settings->getBool("enable_ipv6")) {
 824                 errorstream << "Unable to listen on "
 825                             << bind_addr.serializeString()
 826                             << L" because IPv6 is disabled" << std::endl;
 827                 return false;
 828         }
 829
 830         // Database migration
 831         if (cmd_args.exists("migrate"))
 832                 return migrate_database(game_params, cmd_args);
 833
 834         if (cmd_args.exists("terminal")) {
 835 #if USE_CURSES
 836                 bool name_ok = true;
 837                 std::string admin_nick = g_settings->get("name");
 838
 839                 name_ok = name_ok && !admin_nick.empty();
 840                 name_ok = name_ok && string_allowed(admin_nick, PLAYERNAME_ALLOWED_CHARS);
 841
 842                 if (!name_ok) {
 843                         if (admin_nick.empty()) {
 844                                 errorstream << "No name given for admin. "
 845                                         << "Please check your minetest.conf that it "
 846                                         << "contains a 'name = ' to your main admin account."
 847                                         << std::endl;
 848                         } else {
 849                                 errorstream << "Name for admin '"
 850                                         << admin_nick << "' is not valid. "
 851                                         << "Please check that it only contains allowed characters. "
 852                                         << "Valid characters are: " << PLAYERNAME_ALLOWED_CHARS_USER_EXPL
 853                                         << std::endl;
 854                         }
 855                         return false;
 856                 }
 857                 ChatInterface iface;
 858                 bool &kill = *porting::signal_handler_killstatus();
 859
 860                 try {
 861                         // Create server
 862                         Server server(game_params.world_path,
 863                                 game_params.game_spec, false, bind_addr.isIPv6(), &iface);
 864
 865                         g_term_console.setup(&iface, &kill, admin_nick);
 866
 867                         g_term_console.start();
 868
 869                         server.start(bind_addr);
 870                         // Run server
 871                         dedicated_server_loop(server, kill);
 872                 } catch (const ModError &e) {
 873                         g_term_console.stopAndWaitforThread();
 874                         errorstream << "ModError: " << e.what() << std::endl;
 875                         return false;
 876                 } catch (const ServerError &e) {
 877                         g_term_console.stopAndWaitforThread();
 878                         errorstream << "ServerError: " << e.what() << std::endl;
 879                         return false;
 880                 }
 881
 882                 // Tell the console to stop, and wait for it to finish,
 883                 // only then leave context and free iface
 884                 g_term_console.stop();
 885                 g_term_console.wait();
 886
 887                 g_term_console.clearKillStatus();
 888         } else {
 889 #else
 890                 errorstream << "Cmd arg --terminal passed, but "
 891                         << "compiled without ncurses. Ignoring." << std::endl;
 892         } {
 893 #endif
 894                 try {
 895                         // Create server
 896                         Server server(game_params.world_path, game_params.game_spec, false,
 897                                 bind_addr.isIPv6());
 898                         server.start(bind_addr);
 899
 900                         // Run server
 901                         bool &kill = *porting::signal_handler_killstatus();
 902                         dedicated_server_loop(server, kill);
 903
 904                 } catch (const ModError &e) {
 905                         errorstream << "ModError: " << e.what() << std::endl;
 906                         return false;
 907                 } catch (const ServerError &e) {
 908                         errorstream << "ServerError: " << e.what() << std::endl;
 909                         return false;
 910                 }
 911         }
 912
 913         return true;
 914 }
 915
 916 static bool migrate_database(const GameParams &game_params, const Settings &cmd_args)
 917 {
 918         std::string migrate_to = cmd_args.get("migrate");
 919         Settings world_mt;
 920         std::string world_mt_path = game_params.world_path + DIR_DELIM + "world.mt";
 921         if (!world_mt.readConfigFile(world_mt_path.c_str())) {
 922                 errorstream << "Cannot read world.mt!" << std::endl;
 923                 return false;
 924         }
 925         if (!world_mt.exists("backend")) {
 926                 errorstream << "Please specify your current backend in world.mt:"
 927                         << std::endl
 928                         << "    backend = {sqlite3|leveldb|redis|dummy}"
 929                         << std::endl;
 930                 return false;
 931         }
 932         std::string backend = world_mt.get("backend");
 933         if (backend == migrate_to) {
 934                 errorstream << "Cannot migrate: new backend is same"
 935                         << " as the old one" << std::endl;
 936                 return false;
 937         }
 938         Database *old_db = ServerMap::createDatabase(backend, game_params.world_path, world_mt),
 939                 *new_db = ServerMap::createDatabase(migrate_to, game_params.world_path, world_mt);
 940
 941         u32 count = 0;
 942         time_t last_update_time = 0;
 943         bool &kill = *porting::signal_handler_killstatus();
 944
 945         std::vector<v3s16> blocks;
 946         old_db->listAllLoadableBlocks(blocks);
 947         new_db->beginSave();
 948         for (std::vector<v3s16>::const_iterator it = blocks.begin(); it != blocks.end(); ++it) {
 949                 if (kill) return false;
 950
 951                 std::string data;
 952                 old_db->loadBlock(*it, &data);
 953                 if (!data.empty()) {
 954                         new_db->saveBlock(*it, data);
 955                 } else {
 956                         errorstream << "Failed to load block " << PP(*it) << ", skipping it." << std::endl;
 957                 }
 958                 if (++count % 0xFF == 0 && time(NULL) - last_update_time >= 1) {
 959                         std::cerr << " Migrated " << count << " blocks, "
 960                                 << (100.0 * count / blocks.size()) << "% completed.\r";
 961                         new_db->endSave();
 962                         new_db->beginSave();
 963                         last_update_time = time(NULL);
 964                 }
 965         }
 966         std::cerr << std::endl;
 967         new_db->endSave();
 968         delete old_db;
 969         delete new_db;
 970
 971         actionstream << "Successfully migrated " << count << " blocks" << std::endl;
 972         world_mt.set("backend", migrate_to);
 973         if (!world_mt.updateConfigFile(world_mt_path.c_str()))
 974                 errorstream << "Failed to update world.mt!" << std::endl;
 975         else
 976                 actionstream << "world.mt updated" << std::endl;
 977
 978         return true;
 979 }
 980