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