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