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 << std::endl;
 348 #ifndef SERVER
 349         std::cout << "Using Irrlicht " << IRRLICHT_SDK_VERSION << std::endl;
 350 #endif
 351         std::cout << "Build info: " << g_build_info << std::endl;
 352 }
 353
 354 static void list_game_ids()
 355 {
 356         std::set<std::string> gameids = getAvailableGameIds();
 357         for (std::set<std::string>::const_iterator i = gameids.begin();
 358                         i != gameids.end(); ++i)
 359                 std::cout << (*i) <<std::endl;
 360 }
 361
 362 static void list_worlds()
 363 {
 364         std::cout << _("Available worlds:") << std::endl;
 365         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 366         print_worldspecs(worldspecs, std::cout);
 367 }
 368
 369 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
 370                                                          std::ostream &os)
 371 {
 372         for (size_t i = 0; i < worldspecs.size(); i++) {
 373                 std::string name = worldspecs[i].name;
 374                 std::string path = worldspecs[i].path;
 375                 if (name.find(" ") != std::string::npos)
 376                         name = std::string("'") + name + "'";
 377                 path = std::string("'") + path + "'";
 378                 name = padStringRight(name, 14);
 379                 os << "  " << name << " " << path << std::endl;
 380         }
 381 }
 382
 383 static void print_modified_quicktune_values()
 384 {
 385         bool header_printed = false;
 386         std::vector<std::string> names = getQuicktuneNames();
 387
 388         for (u32 i = 0; i < names.size(); i++) {
 389                 QuicktuneValue val = getQuicktuneValue(names[i]);
 390                 if (!val.modified)
 391                         continue;
 392                 if (!header_printed) {
 393                         dstream << "Modified quicktune values:" << std::endl;
 394                         header_printed = true;
 395                 }
 396                 dstream << names[i] << " = " << val.getString() << std::endl;
 397         }
 398 }
 399
 400 static void setup_log_params(const Settings &cmd_args)
 401 {
 402         // Quiet mode, print errors only
 403         if (cmd_args.getFlag("quiet")) {
 404                 g_logger.removeOutput(&stderr_output);
 405                 g_logger.addOutputMaxLevel(&stderr_output, LL_ERROR);
 406         }
 407
 408         // If trace is enabled, enable logging of certain things
 409         if (cmd_args.getFlag("trace")) {
 410                 dstream << _("Enabling trace level debug output") << std::endl;
 411                 g_logger.setTraceEnabled(true);
 412                 dout_con_ptr = &verbosestream; // This is somewhat old
 413                 socket_enable_debug_output = true; // Sockets doesn't use log.h
 414         }
 415
 416         // In certain cases, output info level on stderr
 417         if (cmd_args.getFlag("info") || cmd_args.getFlag("verbose") ||
 418                         cmd_args.getFlag("trace") || cmd_args.getFlag("speedtests"))
 419                 g_logger.addOutput(&stderr_output, LL_INFO);
 420
 421         // In certain cases, output verbose level on stderr
 422         if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
 423                 g_logger.addOutput(&stderr_output, LL_VERBOSE);
 424 }
 425
 426 static bool create_userdata_path()
 427 {
 428         bool success;
 429
 430 #ifdef __ANDROID__
 431         if (!fs::PathExists(porting::path_user)) {
 432                 success = fs::CreateDir(porting::path_user);
 433         } else {
 434                 success = true;
 435         }
 436         porting::copyAssets();
 437 #else
 438         // Create user data directory
 439         success = fs::CreateDir(porting::path_user);
 440 #endif
 441
 442         return success;
 443 }
 444
 445 static bool init_common(const Settings &cmd_args, int argc, char *argv[])
 446 {
 447         startup_message();
 448         set_default_settings(g_settings);
 449
 450         // Initialize sockets
 451         sockets_init();
 452         atexit(sockets_cleanup);
 453
 454         if (!read_config_file(cmd_args))
 455                 return false;
 456
 457         init_log_streams(cmd_args);
 458
 459         // Initialize random seed
 460         srand(time(0));
 461         mysrand(time(0));
 462
 463         // Initialize HTTP fetcher
 464         httpfetch_init(g_settings->getS32("curl_parallel_limit"));
 465
 466         init_gettext(porting::path_locale.c_str(),
 467                 g_settings->get("language"), argc, argv);
 468
 469         return true;
 470 }
 471
 472 static void startup_message()
 473 {
 474         infostream << PROJECT_NAME << " " << _("with")
 475                    << " SER_FMT_VER_HIGHEST_READ="
 476                << (int)SER_FMT_VER_HIGHEST_READ << ", "
 477                << g_build_info << std::endl;
 478 }
 479
 480 static bool read_config_file(const Settings &cmd_args)
 481 {
 482         // Path of configuration file in use
 483         sanity_check(g_settings_path == "");    // Sanity check
 484
 485         if (cmd_args.exists("config")) {
 486                 bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
 487                 if (!r) {
 488                         errorstream << "Could not read configuration from \""
 489                                     << cmd_args.get("config") << "\"" << std::endl;
 490                         return false;
 491                 }
 492                 g_settings_path = cmd_args.get("config");
 493         } else {
 494                 std::vector<std::string> filenames;
 495                 filenames.push_back(porting::path_user + DIR_DELIM + "minetest.conf");
 496                 // Legacy configuration file location
 497                 filenames.push_back(porting::path_user +
 498                                 DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 499
 500 #if RUN_IN_PLACE
 501                 // Try also from a lower level (to aid having the same configuration
 502                 // for many RUN_IN_PLACE installs)
 503                 filenames.push_back(porting::path_user +
 504                                 DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 505 #endif
 506
 507                 for (size_t i = 0; i < filenames.size(); i++) {
 508                         bool r = g_settings->readConfigFile(filenames[i].c_str());
 509                         if (r) {
 510                                 g_settings_path = filenames[i];
 511                                 break;
 512                         }
 513                 }
 514
 515                 // If no path found, use the first one (menu creates the file)
 516                 if (g_settings_path == "")
 517                         g_settings_path = filenames[0];
 518         }
 519
 520         return true;
 521 }
 522
 523 static void init_log_streams(const Settings &cmd_args)
 524 {
 525 #if RUN_IN_PLACE
 526         std::string log_filename = DEBUGFILE;
 527 #else
 528         std::string log_filename = porting::path_user + DIR_DELIM + DEBUGFILE;
 529 #endif
 530         if (cmd_args.exists("logfile"))
 531                 log_filename = cmd_args.get("logfile");
 532
 533         g_logger.removeOutput(&file_log_output);
 534         std::string conf_loglev = g_settings->get("debug_log_level");
 535
 536         // Old integer format
 537         if (std::isdigit(conf_loglev[0])) {
 538                 warningstream << "Deprecated use of debug_log_level with an "
 539                         "integer value; please update your configuration." << std::endl;
 540                 static const char *lev_name[] =
 541                         {"", "error", "action", "info", "verbose"};
 542                 int lev_i = atoi(conf_loglev.c_str());
 543                 if (lev_i < 0 || lev_i >= (int)ARRLEN(lev_name)) {
 544                         warningstream << "Supplied invalid debug_log_level!"
 545                                 "  Assuming action level." << std::endl;
 546                         lev_i = 2;
 547                 }
 548                 conf_loglev = lev_name[lev_i];
 549         }
 550
 551         if (log_filename.empty() || conf_loglev.empty())  // No logging
 552                 return;
 553
 554         LogLevel log_level = Logger::stringToLevel(conf_loglev);
 555         if (log_level == LL_MAX) {
 556                 warningstream << "Supplied unrecognized debug_log_level; "
 557                         "using maximum." << std::endl;
 558         }
 559
 560         verbosestream << "log_filename = " << log_filename << std::endl;
 561
 562         file_log_output.open(log_filename.c_str());
 563         g_logger.addOutputMaxLevel(&file_log_output, log_level);
 564 }
 565
 566 static bool game_configure(GameParams *game_params, const Settings &cmd_args)
 567 {
 568         game_configure_port(game_params, cmd_args);
 569
 570         if (!game_configure_world(game_params, cmd_args)) {
 571                 errorstream << "No world path specified or found." << std::endl;
 572                 return false;
 573         }
 574
 575         game_configure_subgame(game_params, cmd_args);
 576
 577         return true;
 578 }
 579
 580 static void game_configure_port(GameParams *game_params, const Settings &cmd_args)
 581 {
 582         if (cmd_args.exists("port"))
 583                 game_params->socket_port = cmd_args.getU16("port");
 584         else
 585                 game_params->socket_port = g_settings->getU16("port");
 586
 587         if (game_params->socket_port == 0)
 588                 game_params->socket_port = DEFAULT_SERVER_PORT;
 589 }
 590
 591 static bool game_configure_world(GameParams *game_params, const Settings &cmd_args)
 592 {
 593         if (get_world_from_cmdline(game_params, cmd_args))
 594                 return true;
 595         if (get_world_from_config(game_params, cmd_args))
 596                 return true;
 597
 598         return auto_select_world(game_params);
 599 }
 600
 601 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 602 {
 603         std::string commanded_world = "";
 604
 605         // World name
 606         std::string commanded_worldname = "";
 607         if (cmd_args.exists("worldname"))
 608                 commanded_worldname = cmd_args.get("worldname");
 609
 610         // If a world name was specified, convert it to a path
 611         if (commanded_worldname != "") {
 612                 // Get information about available worlds
 613                 std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 614                 bool found = false;
 615                 for (u32 i = 0; i < worldspecs.size(); i++) {
 616                         std::string name = worldspecs[i].name;
 617                         if (name == commanded_worldname) {
 618                                 dstream << _("Using world specified by --worldname on the "
 619                                         "command line") << std::endl;
 620                                 commanded_world = worldspecs[i].path;
 621                                 found = true;
 622                                 break;
 623                         }
 624                 }
 625                 if (!found) {
 626                         dstream << _("World") << " '" << commanded_worldname
 627                                 << _("' not available. Available worlds:") << std::endl;
 628                         print_worldspecs(worldspecs, dstream);
 629                         return false;
 630                 }
 631
 632                 game_params->world_path = get_clean_world_path(commanded_world);
 633                 return commanded_world != "";
 634         }
 635
 636         if (cmd_args.exists("world"))
 637                 commanded_world = cmd_args.get("world");
 638         else if (cmd_args.exists("map-dir"))
 639                 commanded_world = cmd_args.get("map-dir");
 640         else if (cmd_args.exists("nonopt0")) // First nameless argument
 641                 commanded_world = cmd_args.get("nonopt0");
 642
 643         game_params->world_path = get_clean_world_path(commanded_world);
 644         return commanded_world != "";
 645 }
 646
 647 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args)
 648 {
 649         // World directory
 650         std::string commanded_world = "";
 651
 652         if (g_settings->exists("map-dir"))
 653                 commanded_world = g_settings->get("map-dir");
 654
 655         game_params->world_path = get_clean_world_path(commanded_world);
 656
 657         return commanded_world != "";
 658 }
 659
 660 static bool auto_select_world(GameParams *game_params)
 661 {
 662         // No world was specified; try to select it automatically
 663         // Get information about available worlds
 664
 665         verbosestream << _("Determining world path") << std::endl;
 666
 667         std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 668         std::string world_path;
 669
 670         // If there is only a single world, use it
 671         if (worldspecs.size() == 1) {
 672                 world_path = worldspecs[0].path;
 673                 dstream <<_("Automatically selecting world at") << " ["
 674                         << world_path << "]" << std::endl;
 675         // If there are multiple worlds, list them
 676         } else if (worldspecs.size() > 1 && game_params->is_dedicated_server) {
 677                 std::cerr << _("Multiple worlds are available.") << std::endl;
 678                 std::cerr << _("Please select one using --worldname <name>"
 679                                 " or --world <path>") << std::endl;
 680                 print_worldspecs(worldspecs, std::cerr);
 681                 return false;
 682         // If there are no worlds, automatically create a new one
 683         } else {
 684                 // This is the ultimate default world path
 685                 world_path = porting::path_user + DIR_DELIM + "worlds" +
 686                                 DIR_DELIM + "world";
 687                 infostream << "Creating default world at ["
 688                            << world_path << "]" << std::endl;
 689         }
 690
 691         assert(world_path != "");       // Post-condition
 692         game_params->world_path = world_path;
 693         return true;
 694 }
 695
 696 static std::string get_clean_world_path(const std::string &path)
 697 {
 698         const std::string worldmt = "world.mt";
 699         std::string clean_path;
 700
 701         if (path.size() > worldmt.size()
 702                         && path.substr(path.size() - worldmt.size()) == worldmt) {
 703                 dstream << _("Supplied world.mt file - stripping it off.") << std::endl;
 704                 clean_path = path.substr(0, path.size() - worldmt.size());
 705         } else {
 706                 clean_path = path;
 707         }
 708         return path;
 709 }
 710
 711
 712 static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args)
 713 {
 714         bool success;
 715
 716         success = get_game_from_cmdline(game_params, cmd_args);
 717         if (!success)
 718                 success = determine_subgame(game_params);
 719
 720         return success;
 721 }
 722
 723 static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 724 {
 725         SubgameSpec commanded_gamespec;
 726
 727         if (cmd_args.exists("gameid")) {
 728                 std::string gameid = cmd_args.get("gameid");
 729                 commanded_gamespec = findSubgame(gameid);
 730                 if (!commanded_gamespec.isValid()) {
 731                         errorstream << "Game \"" << gameid << "\" not found" << std::endl;
 732                         return false;
 733                 }
 734                 dstream << _("Using game specified by --gameid on the command line")
 735                         << std::endl;
 736                 game_params->game_spec = commanded_gamespec;
 737                 return true;
 738         }
 739
 740         return false;
 741 }
 742
 743 static bool determine_subgame(GameParams *game_params)
 744 {
 745         SubgameSpec gamespec;
 746
 747         assert(game_params->world_path != "");  // Pre-condition
 748
 749         verbosestream << _("Determining gameid/gamespec") << std::endl;
 750         // If world doesn't exist
 751         if (game_params->world_path != ""
 752                         && !getWorldExists(game_params->world_path)) {
 753                 // Try to take gamespec from command line
 754                 if (game_params->game_spec.isValid()) {
 755                         gamespec = game_params->game_spec;
 756                         infostream << "Using commanded gameid [" << gamespec.id << "]" << std::endl;
 757                 } else { // Otherwise we will be using "minetest"
 758                         gamespec = findSubgame(g_settings->get("default_game"));
 759                         infostream << "Using default gameid [" << gamespec.id << "]" << std::endl;
 760                         if (!gamespec.isValid()) {
 761                                 errorstream << "Subgame specified in default_game ["
 762                                             << g_settings->get("default_game")
 763                                             << "] is invalid." << std::endl;
 764                                 return false;
 765                         }
 766                 }
 767         } else { // World exists
 768                 std::string world_gameid = getWorldGameId(game_params->world_path, false);
 769                 // If commanded to use a gameid, do so
 770                 if (game_params->game_spec.isValid()) {
 771                         gamespec = game_params->game_spec;
 772                         if (game_params->game_spec.id != world_gameid) {
 773                                 warningstream << "Using commanded gameid ["
 774                                             << gamespec.id << "]" << " instead of world gameid ["
 775                                             << world_gameid << "]" << std::endl;
 776                         }
 777                 } else {
 778                         // If world contains an embedded game, use it;
 779                         // Otherwise find world from local system.
 780                         gamespec = findWorldSubgame(game_params->world_path);
 781                         infostream << "Using world gameid [" << gamespec.id << "]" << std::endl;
 782                 }
 783         }
 784
 785         if (!gamespec.isValid()) {
 786                 errorstream << "Subgame [" << gamespec.id << "] could not be found."
 787                             << std::endl;
 788                 return false;
 789         }
 790
 791         game_params->game_spec = gamespec;
 792         return true;
 793 }
 794
 795
 796 /*****************************************************************************
 797  * Dedicated server
 798  *****************************************************************************/
 799 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args)
 800 {
 801         DSTACK("Dedicated server branch");
 802
 803         verbosestream << _("Using world path") << " ["
 804                       << game_params.world_path << "]" << std::endl;
 805         verbosestream << _("Using gameid") << " ["
 806                       << game_params.game_spec.id << "]" << std::endl;
 807
 808         // Bind address
 809         std::string bind_str = g_settings->get("bind_address");
 810         Address bind_addr(0, 0, 0, 0, game_params.socket_port);
 811
 812         if (g_settings->getBool("ipv6_server")) {
 813                 bind_addr.setAddress((IPv6AddressBytes*) NULL);
 814         }
 815         try {
 816                 bind_addr.Resolve(bind_str.c_str());
 817         } catch (ResolveError &e) {
 818                 infostream << "Resolving bind address \"" << bind_str
 819                            << "\" failed: " << e.what()
 820                            << " -- Listening on all addresses." << std::endl;
 821         }
 822         if (bind_addr.isIPv6() && !g_settings->getBool("enable_ipv6")) {
 823                 errorstream << "Unable to listen on "
 824                             << bind_addr.serializeString()
 825                             << L" because IPv6 is disabled" << std::endl;
 826                 return false;
 827         }
 828
 829         // Database migration
 830         if (cmd_args.exists("migrate"))
 831                 return migrate_database(game_params, cmd_args);
 832
 833         if (cmd_args.exists("terminal")) {
 834 #if USE_CURSES
 835                 bool name_ok = true;
 836                 std::string admin_nick = g_settings->get("name");
 837
 838                 name_ok = name_ok && !admin_nick.empty();
 839                 name_ok = name_ok && string_allowed(admin_nick, PLAYERNAME_ALLOWED_CHARS);
 840
 841                 if (!name_ok) {
 842                         if (admin_nick.empty()) {
 843                                 errorstream << "No name given for admin. "
 844                                         << "Please check your minetest.conf that it "
 845                                         << "contains a 'name = ' to your main admin account."
 846                                         << std::endl;
 847                         } else {
 848                                 errorstream << "Name for admin '"
 849                                         << admin_nick << "' is not valid. "
 850                                         << "Please check that it only contains allowed characters. "
 851                                         << "Valid characters are: " << PLAYERNAME_ALLOWED_CHARS_USER_EXPL
 852                                         << std::endl;
 853                         }
 854                         return false;
 855                 }
 856                 ChatInterface iface;
 857                 bool &kill = *porting::signal_handler_killstatus();
 858
 859                 try {
 860                         // Create server
 861                         Server server(game_params.world_path,
 862                                 game_params.game_spec, false, bind_addr.isIPv6(), &iface);
 863
 864                         g_term_console.setup(&iface, &kill, admin_nick);
 865
 866                         g_term_console.start();
 867
 868                         server.start(bind_addr);
 869                         // Run server
 870                         dedicated_server_loop(server, kill);
 871                 } catch (const ModError &e) {
 872                         g_term_console.stopAndWaitforThread();
 873                         errorstream << "ModError: " << e.what() << std::endl;
 874                         return false;
 875                 } catch (const ServerError &e) {
 876                         g_term_console.stopAndWaitforThread();
 877                         errorstream << "ServerError: " << e.what() << std::endl;
 878                         return false;
 879                 }
 880
 881                 // Tell the console to stop, and wait for it to finish,
 882                 // only then leave context and free iface
 883                 g_term_console.stop();
 884                 g_term_console.wait();
 885
 886                 g_term_console.clearKillStatus();
 887         } else {
 888 #else
 889                 errorstream << "Cmd arg --terminal passed, but "
 890                         << "compiled without ncurses. Ignoring." << std::endl;
 891         } {
 892 #endif
 893                 try {
 894                         // Create server
 895                         Server server(game_params.world_path, game_params.game_spec, false,
 896                                 bind_addr.isIPv6());
 897                         server.start(bind_addr);
 898
 899                         // Run server
 900                         bool &kill = *porting::signal_handler_killstatus();
 901                         dedicated_server_loop(server, kill);
 902
 903                 } catch (const ModError &e) {
 904                         errorstream << "ModError: " << e.what() << std::endl;
 905                         return false;
 906                 } catch (const ServerError &e) {
 907                         errorstream << "ServerError: " << e.what() << std::endl;
 908                         return false;
 909                 }
 910         }
 911
 912         return true;
 913 }
 914
 915 static bool migrate_database(const GameParams &game_params, const Settings &cmd_args)
 916 {
 917         std::string migrate_to = cmd_args.get("migrate");
 918         Settings world_mt;
 919         std::string world_mt_path = game_params.world_path + DIR_DELIM + "world.mt";
 920         if (!world_mt.readConfigFile(world_mt_path.c_str())) {
 921                 errorstream << "Cannot read world.mt!" << std::endl;
 922                 return false;
 923         }
 924         if (!world_mt.exists("backend")) {
 925                 errorstream << "Please specify your current backend in world.mt:"
 926                         << std::endl
 927                         << "    backend = {sqlite3|leveldb|redis|dummy}"
 928                         << std::endl;
 929                 return false;
 930         }
 931         std::string backend = world_mt.get("backend");
 932         if (backend == migrate_to) {
 933                 errorstream << "Cannot migrate: new backend is same"
 934                         << " as the old one" << std::endl;
 935                 return false;
 936         }
 937         Database *old_db = ServerMap::createDatabase(backend, game_params.world_path, world_mt),
 938                 *new_db = ServerMap::createDatabase(migrate_to, game_params.world_path, world_mt);
 939
 940         u32 count = 0;
 941         time_t last_update_time = 0;
 942         bool &kill = *porting::signal_handler_killstatus();
 943
 944         std::vector<v3s16> blocks;
 945         old_db->listAllLoadableBlocks(blocks);
 946         new_db->beginSave();
 947         for (std::vector<v3s16>::const_iterator it = blocks.begin(); it != blocks.end(); ++it) {
 948                 if (kill) return false;
 949
 950                 const std::string &data = old_db->loadBlock(*it);
 951                 if (!data.empty()) {
 952                         new_db->saveBlock(*it, data);
 953                 } else {
 954                         errorstream << "Failed to load block " << PP(*it) << ", skipping it." << std::endl;
 955                 }
 956                 if (++count % 0xFF == 0 && time(NULL) - last_update_time >= 1) {
 957                         std::cerr << " Migrated " << count << " blocks, "
 958                                 << (100.0 * count / blocks.size()) << "% completed.\r";
 959                         new_db->endSave();
 960                         new_db->beginSave();
 961                         last_update_time = time(NULL);
 962                 }
 963         }
 964         std::cerr << std::endl;
 965         new_db->endSave();
 966         delete old_db;
 967         delete new_db;
 968
 969         actionstream << "Successfully migrated " << count << " blocks" << std::endl;
 970         world_mt.set("backend", migrate_to);
 971         if (!world_mt.updateConfigFile(world_mt_path.c_str()))
 972                 errorstream << "Failed to update world.mt!" << std::endl;
 973         else
 974                 actionstream << "world.mt updated" << std::endl;
 975
 976         return true;
 977 }
 978