summaryrefslogtreecommitdiff
path: root/src/main.cpp
blob: de9d953084fcc878c5da584b617f715e453a189c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifdef NDEBUG
	/*#ifdef _WIN32
		#pragma message ("Disabling unit tests")
	#else
		#warning "Disabling unit tests"
	#endif*/
	// Disable unit tests
	#define ENABLE_TESTS 0
#else
	// Enable unit tests
	#define ENABLE_TESTS 1
#endif

#ifdef _MSC_VER
#ifndef SERVER // Dedicated server isn't linked with Irrlicht
	#pragma comment(lib, "Irrlicht.lib")
	// This would get rid of the console window
	//#pragma comment(linker, "/subsystem:windows /ENTRY:mainCRTStartup")
#endif
	#pragma comment(lib, "zlibwapi.lib")
	#pragma comment(lib, "Shell32.lib")
#endif

#include "irrlicht.h" // createDevice

#include "main.h"
#include "mainmenumanager.h"
#include "irrlichttypes_extrabloated.h"
#include "debug.h"
#include "test.h"
#include "server.h"
#include "filesys.h"
#include "version.h"
#include "guiMainMenu.h"
#include "game.h"
#include "defaultsettings.h"
#include "gettext.h"
#include "profiler.h"
#include "log.h"
#include "quicktune.h"
#include "httpfetch.h"
#include "guiEngine.h"
#include "mapsector.h"
#include "fontengine.h"
#include "gameparams.h"
#ifndef SERVER
#include "client/clientlauncher.h"
#endif

#include "database-sqlite3.h"
#ifdef USE_LEVELDB
#include "database-leveldb.h"
#endif

#if USE_REDIS
#include "database-redis.h"
#endif

#ifdef HAVE_TOUCHSCREENGUI
#include "touchscreengui.h"
#endif

/*
	Settings.
	These are loaded from the config file.
*/
static Settings main_settings;
Settings *g_settings = &main_settings;
std::string g_settings_path;

// Global profiler
Profiler main_profiler;
Profiler *g_profiler = &main_profiler;

// Menu clouds are created later
Clouds *g_menuclouds = 0;
irr::scene::ISceneManager *g_menucloudsmgr = 0;

/*
	Debug streams
*/

// Connection
std::ostream *dout_con_ptr = &dummyout;
std::ostream *derr_con_ptr = &verbosestream;

// Server
std::ostream *dout_server_ptr = &infostream;
std::ostream *derr_server_ptr = &errorstream;

// Client
std::ostream *dout_client_ptr = &infostream;
std::ostream *derr_client_ptr = &errorstream;

#define DEBUGFILE "debug.txt"
#define DEFAULT_SERVER_PORT 30000

typedef std::map<std::string, ValueSpec> OptionList;

/**********************************************************************
 * Private functions
 **********************************************************************/

static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args);
static void set_allowed_options(OptionList *allowed_options);

static void print_help(const OptionList &allowed_options);
static void print_allowed_options(const OptionList &allowed_options);
static void print_version();
static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
							 std::ostream &os);
static void print_modified_quicktune_values();

static void list_game_ids();
static void list_worlds();
static void setup_log_params(const Settings &cmd_args);
static bool create_userdata_path();
static bool init_common(int *log_level, const Settings &cmd_args, int argc, char *argv[]);
static void startup_message();
static bool read_config_file(const Settings &cmd_args);
static void init_debug_streams(int *log_level, const Settings &cmd_args);

static bool game_configure(GameParams *game_params, const Settings &cmd_args);
static void game_configure_port(GameParams *game_params, const Settings &cmd_args);

static bool game_configure_world(GameParams *game_params, const Settings &cmd_args);
static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args);
static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args);
static bool auto_select_world(GameParams *game_params);
static std::string get_clean_world_path(const std::string &path);

static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args);
static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args);
static bool determine_subgame(GameParams *game_params);

static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args);
static bool migrate_database(const GameParams &game_params, const Settings &cmd_args,
		Server *server);

/**********************************************************************/

#ifndef SERVER
/*
	Random stuff
*/

/* mainmenumanager.h */

gui::IGUIEnvironment* guienv = NULL;
gui::IGUIStaticText *guiroot = NULL;
MainMenuManager g_menumgr;

bool noMenuActive()
{
	return (g_menumgr.menuCount() == 0);
}

// Passed to menus to allow disconnecting and exiting
MainGameCallback *g_gamecallback = NULL;
#endif

/*
	gettime.h implementation
*/

#ifdef SERVER

u32 getTimeMs()
{
	/* Use imprecise system calls directly (from porting.h) */
	return porting::getTime(PRECISION_MILLI);
}

u32 getTime(TimePrecision prec)
{
	return porting::getTime(prec);
}

#endif

class StderrLogOutput: public ILogOutput
{
public:
	/* line: Full line with timestamp, level and thread */
	void printLog(const std::string &line)
	{
		std::cerr << line << std::endl;
	}
} main_stderr_log_out;

class DstreamNoStderrLogOutput: public ILogOutput
{
public:
	/* line: Full line with timestamp, level and thread */
	void printLog(const std::string &line)
	{
		dstream_no_stderr << line << std::endl;
	}
} main_dstream_no_stderr_log_out;

static OptionList allowed_options;

int main(int argc, char *argv[])
{
	int retval;

	debug_set_exception_handler();

	log_add_output_maxlev(&main_stderr_log_out, LMT_ACTION);
	log_add_output_all_levs(&main_dstream_no_stderr_log_out);

	log_register_thread("main");

	Settings cmd_args;
	bool cmd_args_ok = get_cmdline_opts(argc, argv, &cmd_args);
	if (!cmd_args_ok
			|| cmd_args.getFlag("help")
			|| cmd_args.exists("nonopt1")) {
		print_help(allowed_options);
		return cmd_args_ok ? 0 : 1;
	}

	if (cmd_args.getFlag("version")) {
		print_version();
		return 0;
	}

	setup_log_params(cmd_args);

	porting::signal_handler_init();
	porting::initializePaths();

	if (!create_userdata_path()) {
		errorstream << "Cannot create user data directory" << std::endl;
		return 1;
	}

	// Initialize debug stacks
	debug_stacks_init();
	DSTACK(__FUNCTION_NAME);

	// Debug handler
	BEGIN_DEBUG_EXCEPTION_HANDLER

	// List gameids if requested
	if (cmd_args.exists("gameid") && cmd_args.get("gameid") == "list") {
		list_game_ids();
		return 0;
	}

	// List worlds if requested
	if (cmd_args.exists("world") && cmd_args.get("world") == "list") {
		list_worlds();
		return 0;
	}

	GameParams game_params;
	if (!init_common(&game_params.log_level, cmd_args, argc, argv))
		return 1;

#ifndef __ANDROID__
	// Run unit tests
	if ((ENABLE_TESTS && cmd_args.getFlag("disable-unittests") == false)
			|| cmd_args.getFlag("enable-unittests") == true) {
		run_tests();
	}
#endif

#ifdef SERVER
	game_params.is_dedicated_server = true;
#else
	game_params.is_dedicated_server = cmd_args.getFlag("server");
#endif

	if (!game_configure(&game_params, cmd_args))
		return 1;

	assert(game_params.world_path != "");

	infostream << "Using commanded world path ["
	           << game_params.world_path << "]" << std::endl;

	//Run dedicated server if asked to or no other option
	g_settings->set("server_dedicated",
			game_params.is_dedicated_server ? "true" : "false");

	if (game_params.is_dedicated_server)
		return run_dedicated_server(game_params, cmd_args) ? 0 : 1;

#ifndef SERVER
	ClientLauncher launcher;
	retval = launcher.run(game_params, cmd_args) ? 0 : 1;
#else
	retval = 0;
#endif

	// Update configuration file
	if (g_settings_path != "")
		g_settings->updateConfigFile(g_settings_path.c_str());

	print_modified_quicktune_values();

	// Stop httpfetch thread (if started)
	httpfetch_cleanup();

	END_DEBUG_EXCEPTION_HANDLER(errorstream)

	return retval;
}


/*****************************************************************************
 * Startup / Init
 *****************************************************************************/


static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args)
{
	set_allowed_options(&allowed_options);

	return cmd_args->parseCommandLine(argc, argv, allowed_options);
}

static void set_allowed_options(OptionList *allowed_options)
{
	allowed_options->clear();

	allowed_options->insert(std::make_pair("help", ValueSpec(VALUETYPE_FLAG,
			_("Show allowed options"))));
	allowed_options->insert(std::make_pair("version", ValueSpec(VALUETYPE_FLAG,
			_("Show version information"))));
	allowed_options->insert(std::make_pair("config", ValueSpec(VALUETYPE_STRING,
			_("Load configuration from specified file"))));
	allowed_options->insert(std::make_pair("port", ValueSpec(VALUETYPE_STRING,
			_("Set network port (UDP)"))));
	allowed_options->insert(std::make_pair("disable-unittests", ValueSpec(VALUETYPE_FLAG,
			_("Disable unit tests"))));
	allowed_options->insert(std::make_pair("enable-unittests", ValueSpec(VALUETYPE_FLAG,
			_("Enable unit tests"))));
	allowed_options->insert(std::make_pair("map-dir", ValueSpec(VALUETYPE_STRING,
			_("Same as --world (deprecated)"))));
	allowed_options->insert(std::make_pair("world", ValueSpec(VALUETYPE_STRING,
			_("Set world path (implies local game) ('list' lists all)"))));
	allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
			_("Set world by name (implies local game)"))));
	allowed_options->insert(std::make_pair("quiet", ValueSpec(VALUETYPE_FLAG,
			_("Print to console errors only"))));
	allowed_options->insert(std::make_pair("info", ValueSpec(VALUETYPE_FLAG,
			_("Print more information to console"))));
	allowed_options->insert(std::make_pair("verbose",  ValueSpec(VALUETYPE_FLAG,
			_("Print even more information to console"))));
	allowed_options->insert(std::make_pair("trace", ValueSpec(VALUETYPE_FLAG,
			_("Print enormous amounts of information to log and console"))));
	allowed_options->insert(std::make_pair("logfile", ValueSpec(VALUETYPE_STRING,
			_("Set logfile path ('' = no logging)"))));
	allowed_options->insert(std::make_pair("gameid", ValueSpec(VALUETYPE_STRING,
			_("Set gameid (\"--gameid list\" prints available ones)"))));
	allowed_options->insert(std::make_pair("migrate", ValueSpec(VALUETYPE_STRING,
			_("Migrate from current map backend to another (Only works when using minetestserver or with --server)"))));
#ifndef SERVER
	allowed_options->insert(std::make_pair("videomodes", ValueSpec(VALUETYPE_FLAG,
			_("Show available video modes"))));
	allowed_options->insert(std::make_pair("speedtests", ValueSpec(VALUETYPE_FLAG,
			_("Run speed tests"))));
	allowed_options->insert(std::make_pair("address", ValueSpec(VALUETYPE_STRING,
			_("Address to connect to. ('' = local game)"))));
	allowed_options->insert(std::make_pair("random-input", ValueSpec(VALUETYPE_FLAG,
			_("Enable random user input, for testing"))));
	allowed_options->insert(std::make_pair("server", ValueSpec(VALUETYPE_FLAG,
			_("Run dedicated server"))));
	allowed_options->insert(std::make_pair("name", ValueSpec(VALUETYPE_STRING,
			_("Set player name"))));
	allowed_options->insert(std::make_pair("password", ValueSpec(VALUETYPE_STRING,
			_("Set password"))));
	allowed_options->insert(std::make_pair("go", ValueSpec(VALUETYPE_FLAG,
			_("Disable main menu"))));
#endif

}

static void print_help(const OptionList &allowed_options)
{
	dstream << _("Allowed options:") << std::endl;
	print_allowed_options(allowed_options);
}

static void print_allowed_options(const OptionList &allowed_options)
{
	for (OptionList::const_iterator i = allowed_options.begin();
			i != allowed_options.end(); ++i) {
		std::ostringstream os1(std::ios::binary);
		os1 << "  --" << i->first;
		if (i->second.type != VALUETYPE_FLAG)
			os1 << _(" <value>");

		dstream << padStringRight(os1.str(), 24);

		if (i->second.help != NULL)
			dstream << i->second.help;

		dstream << std::endl;
	}
}

static void print_version()
{
#ifdef SERVER
	dstream << "minetestserver " << minetest_version_hash << std::endl;
#else
	dstream << "Minetest " << minetest_version_hash << std::endl;
	dstream << "Using Irrlicht " << IRRLICHT_SDK_VERSION << std::endl;
#endif
	dstream << "Build info: " << minetest_build_info << std::endl;
}

static void list_game_ids()
{
	std::set<std::string> gameids = getAvailableGameIds();
	for (std::set<std::string>::const_iterator i = gameids.begin();
			i != gameids.end(); i++)
		dstream << (*i) <<std::endl;
}

static void list_worlds()
{
	dstream << _("Available worlds:") << std::endl;
	std::vector<WorldSpec> worldspecs = getAvailableWorlds();
	print_worldspecs(worldspecs, dstream);
}

static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
							 std::ostream &os)
{
	for (size_t i = 0; i < worldspecs.size(); i++) {
		std::string name = worldspecs[i].name;
		std::string path = worldspecs[i].path;
		if (name.find(" ") != std::string::npos)
			name = std::string("'") + name + "'";
		path = std::string("'") + path + "'";
		name = padStringRight(name, 14);
		os << "  " << name << " " << path << std::endl;
	}
}

static void print_modified_quicktune_values()
{
	bool header_printed = false;
	std::vector<std::string> names = getQuicktuneNames();

	for (u32 i = 0; i < names.size(); i++) {
		QuicktuneValue val = getQuicktuneValue(names[i]);
		if (!val.modified)
			continue;
		if (!header_printed) {
			dstream << "Modified quicktune values:" << std::endl;
			header_printed = true;
		}
		dstream << names[i] << " = " << val.getString() << std::endl;
	}
}

static void setup_log_params(const Settings &cmd_args)
{
	// Quiet mode, print errors only
	if (cmd_args.getFlag("quiet")) {
		log_remove_output(&main_stderr_log_out);
		log_add_output_maxlev(&main_stderr_log_out, LMT_ERROR);
	}

	// If trace is enabled, enable logging of certain things
	if (cmd_args.getFlag("trace")) {
		dstream << _("Enabling trace level debug output") << std::endl;
		log_trace_level_enabled = true;
		dout_con_ptr = &verbosestream; // this is somewhat old crap
		socket_enable_debug_output = true; // socket doesn't use log.h
	}

	// In certain cases, output info level on stderr
	if (cmd_args.getFlag("info") || cmd_args.getFlag("verbose") ||
			cmd_args.getFlag("trace") || cmd_args.getFlag("speedtests"))
		log_add_output(&main_stderr_log_out, LMT_INFO);

	// In certain cases, output verbose level on stderr
	if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
		log_add_output(&main_stderr_log_out, LMT_VERBOSE);
}

static bool create_userdata_path()
{
	bool success;

#ifdef __ANDROID__
	porting::initAndroid();

	porting::setExternalStorageDir(porting::jnienv);
	if (!fs::PathExists(porting::path_user)) {
		success = fs::CreateDir(porting::path_user);
	} else {
		success = true;
	}
	porting::copyAssets();
#else
	// Create user data directory
	success = fs::CreateDir(porting::path_user);
#endif

	infostream << "path_share = " << porting::path_share << std::endl;
	infostream << "path_user  = " << porting::path_user << std::endl;

	return success;
}

static bool init_common(int *log_level, const Settings &cmd_args, int argc, char *argv[])
{
	startup_message();
	set_default_settings(g_settings);

	// Initialize sockets
	sockets_init();
	atexit(sockets_cleanup);

	if (!read_config_file(cmd_args))
		return false;

	init_debug_streams(log_level, cmd_args);

	// Initialize random seed
	srand(time(0));
	mysrand(time(0));

	// Initialize HTTP fetcher
	httpfetch_init(g_settings->getS32("curl_parallel_limit"));

#ifdef _MSC_VER
	init_gettext((porting::path_share + DIR_DELIM + "locale").c_str(),
		g_settings->get("language"), argc, argv);
#else
	init_gettext((porting::path_share + DIR_DELIM + "locale").c_str(),
		g_settings->get("language"));
#endif

	return true;
}

static void startup_message()
{
	infostream << PROJECT_NAME << " " << _("with")
	           << " SER_FMT_VER_HIGHEST_READ="
               << (int)SER_FMT_VER_HIGHEST_READ << ", "
               << minetest_build_info << std::endl;
}

static bool read_config_file(const Settings &cmd_args)
{
	// Path of configuration file in use
	assert(g_settings_path == "");	// Sanity check

	if (cmd_args.exists("config")) {
		bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
		if (!r) {
			errorstream << "Could not read configuration from \""
			            << cmd_args.get("config") << "\"" << std::endl;
			return false;
		}
		g_settings_path = cmd_args.get("config");
	} else {
		std::vector<std::string> filenames;
		filenames.push_back(porting::path_user + DIR_DELIM + "minetest.conf");
		// Legacy configuration file location
		filenames.push_back(porting::path_user +
				DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");

#if RUN_IN_PLACE
		// Try also from a lower level (to aid having the same configuration
		// for many RUN_IN_PLACE installs)
		filenames.push_back(porting::path_user +
				DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
#endif

		for (size_t i = 0; i < filenames.size(); i++) {
			bool r = g_settings->readConfigFile(filenames[i].c_str());
			if (r) {
				g_settings_path = filenames[i];
				break;
			}
		}

		// If no path found, use the first one (menu creates the file)
		if (g_settings_path == "")
			g_settings_path = filenames[0];
	}

	return true;
}

static void init_debug_streams(int *log_level, const Settings &cmd_args)
{
#if RUN_IN_PLACE
	std::string logfile = DEBUGFILE;
#else
	std::string logfile = porting::path_user + DIR_DELIM + DEBUGFILE;
#endif
	if (cmd_args.exists("logfile"))
		logfile = cmd_args.get("logfile");

	log_remove_output(&main_dstream_no_stderr_log_out);
	*log_level = g_settings->getS32("debug_log_level");

	if (*log_level == 0) //no logging
		logfile = "";
	if (*log_level < 0) {
		dstream << "WARNING: Supplied debug_log_level < 0; Using 0" << std::endl;
		*log_level = 0;
	} else if (*log_level > LMT_NUM_VALUES) {
		dstream << "WARNING: Supplied debug_log_level > " << LMT_NUM_VALUES
		        << "; Using " << LMT_NUM_VALUES << std::endl;
		*log_level = LMT_NUM_VALUES;
	}

	log_add_output_maxlev(&main_dstream_no_stderr_log_out,
			(LogMessageLevel)(*log_level - 1));

	debugstreams_init(false, logfile == "" ? NULL : logfile.c_str());

	infostream << "logfile = " << logfile << std::endl;

	atexit(debugstreams_deinit);
}

static bool game_configure(GameParams *game_params, const Settings &cmd_args)
{
	game_configure_port(game_params, cmd_args);

	if (!game_configure_world(game_params, cmd_args)) {
		errorstream << "No world path specified or found." << std::endl;
		return false;
	}

	game_configure_subgame(game_params, cmd_args);

	return true;
}

static void game_configure_port(GameParams *game_params, const Settings &cmd_args)
{
	if (cmd_args.exists("port"))
		game_params->socket_port = cmd_args.getU16("port");
	else
		game_params->socket_port = g_settings->getU16("port");

	if (game_params->socket_port == 0)
		game_params->socket_port = DEFAULT_SERVER_PORT;
}

static bool game_configure_world(GameParams *game_params, const Settings &cmd_args)
{
	if (get_world_from_cmdline(game_params, cmd_args))
		return true;
	if (get_world_from_config(game_params, cmd_args))
		return true;

	return auto_select_world(game_params);
}

static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args)
{
	std::string commanded_world = "";

	// World name
	std::string commanded_worldname = "";
	if (cmd_args.exists("worldname"))
		commanded_worldname = cmd_args.get("worldname");

	// If a world name was specified, convert it to a path
	if (commanded_worldname != "") {
		// Get information about available worlds
		std::vector<WorldSpec> worldspecs = getAvailableWorlds();
		bool found = false;
		for (u32 i = 0; i < worldspecs.size(); i++) {
			std::string name = worldspecs[i].name;
			if (name == commanded_worldname) {
				dstream << _("Using world specified by --worldname on the "
					"command line") << std::endl;
				commanded_world = worldspecs[i].path;
				found = true;
				break;
			}
		}
		if (!found) {
			dstream << _("World") << " '" << commanded_worldname
			        << _("' not available. Available worlds:") << std::endl;
			print_worldspecs(worldspecs, dstream);
			return false;
		}

		game_params->world_path = get_clean_world_path(commanded_world);
		return commanded_world != "";
	}

	if (cmd_args.exists("world"))
		commanded_world = cmd_args.get("world");
	else if (cmd_args.exists("map-dir"))
		commanded_world = cmd_args.get("map-dir");
	else if (cmd_args.exists("nonopt0")) // First nameless argument
		commanded_world = cmd_args.get("nonopt0");

	game_params->world_path = get_clean_world_path(commanded_world);
	return commanded_world != "";
}

static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args)
{
	// World directory
	std::string commanded_world = "";

	if (g_settings->exists("map-dir"))
		commanded_world = g_settings->get("map-dir");

	game_params->world_path = get_clean_world_path(commanded_world);

	return commanded_world != "";
}

static bool auto_select_world(GameParams *game_params)
{
	// No world was specified; try to select it automatically
	// Get information about available worlds

	verbosestream << _("Determining world path") << std::endl;

	std::vector<WorldSpec> worldspecs = getAvailableWorlds();
	std::string world_path;

	// If there is only a single world, use it
	if (worldspecs.size() == 1) {
		world_path = worldspecs[0].path;
		dstream <<_("Automatically selecting world at") << " ["
		        << world_path << "]" << std::endl;
	// If there are multiple worlds, list them
	} else if (worldspecs.size() > 1 && game_params->is_dedicated_server) {
		dstream << _("Multiple worlds are available.") << std::endl;
		dstream << _("Please select one using --worldname <name>"
				" or --world <path>") << std::endl;
		print_worldspecs(worldspecs, dstream);
		return false;
	// If there are no worlds, automatically create a new one
	} else {
		// This is the ultimate default world path
		world_path = porting::path_user + DIR_DELIM + "worlds" +
				DIR_DELIM + "world";
		infostream << "Creating default world at ["
		           << world_path << "]" << std::endl;
	}

	assert(world_path != "");
	game_params->world_path = world_path;
	return true;
}

static std::string get_clean_world_path(const std::string &path)
{
	const std::string worldmt = "world.mt";
	std::string clean_path;

	if (path.size() > worldmt.size()
			&& path.substr(path.size() - worldmt.size()) == worldmt) {
		dstream << _("Supplied world.mt file - stripping it off.") << std::endl;
		clean_path = path.substr(0, path.size() - worldmt.size());
	} else {
		clean_path = path;
	}
	return path;
}


static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args)
{
	bool success;

	success = get_game_from_cmdline(game_params, cmd_args);
	if (!success)
		success = determine_subgame(game_params);

	return success;
}

static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args)
{
	SubgameSpec commanded_gamespec;

	if (cmd_args.exists("gameid")) {
		std::string gameid = cmd_args.get("gameid");
		commanded_gamespec = findSubgame(gameid);
		if (!commanded_gamespec.isValid()) {
			errorstream << "Game \"" << gameid << "\" not found" << std::endl;
			return false;
		}
		dstream << _("Using game specified by --gameid on the command line")
		        << std::endl;
		game_params->game_spec = commanded_gamespec;
		return true;
	}

	return false;
}

static bool determine_subgame(GameParams *game_params)
{
	SubgameSpec gamespec;

	assert(game_params->world_path != "");	// pre-condition

	verbosestream << _("Determining gameid/gamespec") << std::endl;
	// If world doesn't exist
	if (game_params->world_path != ""
			&& !getWorldExists(game_params->world_path)) {
		// Try to take gamespec from command line
		if (game_params->game_spec.isValid()) {
			gamespec = game_params->game_spec;
			infostream << "Using commanded gameid [" << gamespec.id << "]" << std::endl;
		} else { // Otherwise we will be using "minetest"
			gamespec = findSubgame(g_settings->get("default_game"));
			infostream << "Using default gameid [" << gamespec.id << "]" << std::endl;
			if (!gamespec.isValid()) {
				errorstream << "Subgame specified in default_game ["
				            << g_settings->get("default_game")
				            << "] is invalid." << std::endl;
				return false;
			}
		}
	} else { // World exists
		std::string world_gameid = getWorldGameId(game_params->world_path, false);
		// If commanded to use a gameid, do so
		if (game_params->game_spec.isValid()) {
			gamespec = game_params->game_spec;
			if (game_params->game_spec.id != world_gameid) {
				errorstream << "WARNING: Using commanded gameid ["
				            << gamespec.id << "]" << " instead of world gameid ["
				            << world_gameid << "]" << std::endl;
			}
		} else {
			// If world contains an embedded game, use it;
			// Otherwise find world from local system.
			gamespec = findWorldSubgame(game_params->world_path);
			infostream << "Using world gameid [" << gamespec.id << "]" << std::endl;
		}
	}

	if (!gamespec.isValid()) {
		errorstream << "Subgame [" << gamespec.id << "] could not be found."
		            << std::endl;
		return false;
	}

	game_params->game_spec = gamespec;
	return true;
}


/*****************************************************************************
 * Dedicated server
 *****************************************************************************/
static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args)
{
	DSTACK("Dedicated server branch");

	verbosestream << _("Using world path") << " ["
	              << game_params.world_path << "]" << std::endl;
	verbosestream << _("Using gameid") << " ["
	              << game_params.game_spec.id << "]" << std::endl;

	// Bind address
	std::string bind_str = g_settings->get("bind_address");
	Address bind_addr(0, 0, 0, 0, game_params.socket_port);

	if (g_settings->getBool("ipv6_server")) {
		bind_addr.setAddress((IPv6AddressBytes*) NULL);
	}
	try {
		bind_addr.Resolve(bind_str.c_str());
	} catch (ResolveError &e) {
		infostream << "Resolving bind address \"" << bind_str
		           << "\" failed: " << e.what()
		           << " -- Listening on all addresses." << std::endl;
	}
	if (bind_addr.isIPv6() && !g_settings->getBool("enable_ipv6")) {
		errorstream << "Unable to listen on "
		            << bind_addr.serializeString()
		            << L" because IPv6 is disabled" << std::endl;
		return false;
	}

	// Create server
	Server server(game_params.world_path,
			game_params.game_spec, false, bind_addr.isIPv6());

	// Database migration
	if (cmd_args.exists("migrate"))
		return migrate_database(game_params, cmd_args, &server);

	server.start(bind_addr);

	// Run server
	bool &kill = *porting::signal_handler_killstatus();
	dedicated_server_loop(server, kill);

	return true;
}

static bool migrate_database(const GameParams &game_params, const Settings &cmd_args,
		Server *server)
{
	Settings world_mt;
	bool success = world_mt.readConfigFile((game_params.world_path
			+ DIR_DELIM + "world.mt").c_str());
	if (!success) {
		errorstream << "Cannot read world.mt" << std::endl;
		return false;
	}

	if (!world_mt.exists("backend")) {
		errorstream << "Please specify your current backend in world.mt file:"
		            << std::endl << "	backend = {sqlite3|leveldb|redis|dummy}"
		            << std::endl;
		return false;
	}

	std::string backend = world_mt.get("backend");
	Database *new_db;
	std::string migrate_to = cmd_args.get("migrate");

	if (backend == migrate_to) {
		errorstream << "Cannot migrate: new backend is same as the old one"
		            << std::endl;
		return false;
	}

	if (migrate_to == "sqlite3")
		new_db = new Database_SQLite3(&(ServerMap&)server->getMap(),
				game_params.world_path);
#if USE_LEVELDB
	else if (migrate_to == "leveldb")
		new_db = new Database_LevelDB(&(ServerMap&)server->getMap(),
				game_params.world_path);
#endif
#if USE_REDIS
	else if (migrate_to == "redis")
		new_db = new Database_Redis(&(ServerMap&)server->getMap(),
				game_params.world_path);
#endif
	else {
		errorstream << "Migration to " << migrate_to << " is not supported"
		            << std::endl;
		return false;
	}

	std::list<v3s16> blocks;
	ServerMap &old_map = ((ServerMap&)server->getMap());
	old_map.listAllLoadableBlocks(blocks);
	int count = 0;
	new_db->beginSave();
	for (std::list<v3s16>::iterator i = blocks.begin(); i != blocks.end(); i++) {
		MapBlock *block = old_map.loadBlock(*i);
		if (!block) {
			errorstream << "Failed to load block " << PP(*i) << ", skipping it.";
		} else {
			old_map.saveBlock(block, new_db);
			MapSector *sector = old_map.getSectorNoGenerate(v2s16(i->X, i->Z));
			sector->deleteBlock(block);
		}
		++count;
		if (count % 500 == 0)
		   actionstream << "Migrated " << count << " blocks "
			   << (100.0 * count / blocks.size()) << "% completed" << std::endl;
	}
	new_db->endSave();
	delete new_db;

	actionstream << "Successfully migrated " << count << " blocks" << std::endl;
	world_mt.set("backend", migrate_to);
	if (!world_mt.updateConfigFile(
				(game_params.world_path+ DIR_DELIM + "world.mt").c_str()))
		errorstream << "Failed to update world.mt!" << std::endl;
	else
		actionstream << "world.mt updated" << std::endl;

	return true;
}