aboutsummaryrefslogtreecommitdiffstats
path: root/src/command.c
blob: d985fd61b4f520453517b0a722cf300d11d03662 (plain) (blame)
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
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
/* the Music Player Daemon (MPD)
 * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "command.h"
#include "player_control.h"
#include "playlist.h"
#include "ls.h"
#include "directory.h"
#include "database.h"
#include "update.h"
#include "volume.h"
#include "stats.h"
#include "list.h"
#include "permission.h"
#include "buffer2array.h"
#include "log.h"
#include "utils.h"
#include "storedPlaylist.h"
#include "sllist.h"
#include "ack.h"
#include "audio.h"
#include "dbUtils.h"
#include "tag.h"
#include "client.h"
#include "tag_print.h"
#include "path.h"
#include "os_compat.h"

#define COMMAND_PLAY           	"play"
#define COMMAND_PLAYID         	"playid"
#define COMMAND_STOP           	"stop"
#define COMMAND_PAUSE          	"pause"
#define COMMAND_STATUS         	"status"
#define COMMAND_KILL           	"kill"
#define COMMAND_CLOSE          	"close"
#define COMMAND_ADD            	"add"
#define COMMAND_ADDID		"addid"
#define COMMAND_DELETE         	"delete"
#define COMMAND_DELETEID       	"deleteid"
#define COMMAND_PLAYLIST       	"playlist"
#define COMMAND_SHUFFLE        	"shuffle"
#define COMMAND_CLEAR          	"clear"
#define COMMAND_SAVE           	"save"
#define COMMAND_LOAD           	"load"
#define COMMAND_LISTPLAYLIST   	"listplaylist"
#define COMMAND_LISTPLAYLISTINFO   	"listplaylistinfo"
#define COMMAND_LSINFO         	"lsinfo"
#define COMMAND_RM             	"rm"
#define COMMAND_PLAYLISTINFO   	"playlistinfo"
#define COMMAND_PLAYLISTID   	"playlistid"
#define COMMAND_FIND           	"find"
#define COMMAND_SEARCH         	"search"
#define COMMAND_UPDATE         	"update"
#define COMMAND_NEXT           	"next"
#define COMMAND_PREVIOUS       	"previous"
#define COMMAND_LISTALL        	"listall"
#define COMMAND_VOLUME         	"volume"
#define COMMAND_REPEAT         	"repeat"
#define COMMAND_RANDOM         	"random"
#define COMMAND_STATS          	"stats"
#define COMMAND_CLEAR_ERROR    	"clearerror"
#define COMMAND_LIST           	"list"
#define COMMAND_MOVE           	"move"
#define COMMAND_MOVEID         	"moveid"
#define COMMAND_SWAP           	"swap"
#define COMMAND_SWAPID      	"swapid"
#define COMMAND_SEEK           	"seek"
#define COMMAND_SEEKID         	"seekid"
#define COMMAND_LISTALLINFO	"listallinfo"
#define COMMAND_PING		"ping"
#define COMMAND_SETVOL		"setvol"
#define COMMAND_PASSWORD	"password"
#define COMMAND_CROSSFADE	"crossfade"
#define COMMAND_URL_HANDLERS   	"urlhandlers"
#define COMMAND_PLCHANGES	"plchanges"
#define COMMAND_PLCHANGESPOSID	"plchangesposid"
#define COMMAND_CURRENTSONG	"currentsong"
#define COMMAND_ENABLE_DEV	"enableoutput"
#define COMMAND_DISABLE_DEV	"disableoutput"
#define COMMAND_DEVICES		"outputs"
#define COMMAND_COMMANDS	"commands"
#define COMMAND_NOTCOMMANDS	"notcommands"
#define COMMAND_PLAYLISTCLEAR   "playlistclear"
#define COMMAND_PLAYLISTADD	"playlistadd"
#define COMMAND_PLAYLISTFIND	"playlistfind"
#define COMMAND_PLAYLISTSEARCH	"playlistsearch"
#define COMMAND_PLAYLISTMOVE	"playlistmove"
#define COMMAND_PLAYLISTDELETE	"playlistdelete"
#define COMMAND_TAGTYPES	"tagtypes"
#define COMMAND_COUNT		"count"
#define COMMAND_RENAME		"rename"

#define COMMAND_STATUS_VOLUME           "volume"
#define COMMAND_STATUS_STATE            "state"
#define COMMAND_STATUS_REPEAT           "repeat"
#define COMMAND_STATUS_RANDOM           "random"
#define COMMAND_STATUS_PLAYLIST         "playlist"
#define COMMAND_STATUS_PLAYLIST_LENGTH  "playlistlength"
#define COMMAND_STATUS_SONG             "song"
#define COMMAND_STATUS_SONGID           "songid"
#define COMMAND_STATUS_TIME             "time"
#define COMMAND_STATUS_BITRATE          "bitrate"
#define COMMAND_STATUS_ERROR            "error"
#define COMMAND_STATUS_CROSSFADE	"xfade"
#define COMMAND_STATUS_AUDIO		"audio"
#define COMMAND_STATUS_UPDATING_DB	"updating_db"

/*
 * The most we ever use is for search/find, and that limits it to the
 * number of tags we can have.  Add one for the command, and one extra
 * to catch errors clients may send us
 */
#define COMMAND_ARGV_MAX	(2+(TAG_NUM_OF_ITEM_TYPES*2))

typedef struct _CommandEntry CommandEntry;

typedef int (*CommandHandlerFunction) (struct client *, int, char **);

/* if min: -1 don't check args *
 * if max: -1 no max args      */
struct _CommandEntry {
	const char *cmd;
	int min;
	int max;
	int reqPermission;
	CommandHandlerFunction handler;
};

/* this should really be "need a non-negative integer": */
static const char need_positive[] = "need a positive integer"; /* no-op */

/* FIXME: redundant error messages */
static const char check_integer[] = "\"%s\" is not a integer";
static const char need_integer[] = "need an integer";
static const char check_boolean[] = "\"%s\" is not 0 or 1";
static const char check_non_negative[] = "\"%s\" is not an integer >= 0";

static const char *current_command;
static int command_listNum;

static List *commandList;

void command_success(struct client *client)
{
	client_puts(client, "OK\n");
}

static void command_error_v(struct client *client, int error,
			    const char *fmt, va_list args)
{
	assert(client != NULL);
	assert(current_command != NULL);

	client_printf(client, "ACK [%i@%i] {%s} ",
		      (int)error, command_listNum, current_command);
	client_vprintf(client, fmt, args);
	client_puts(client, "\n");

	current_command = NULL;
}

mpd_fprintf_ void command_error(struct client *client, int error,
				const char *fmt, ...)
{
	va_list args;
	va_start(args, fmt);
	command_error_v(client, error, fmt, args);
	va_end(args);
}

static int mpd_fprintf__ check_uint32(struct client *client, uint32_t *dst,
                                      const char *s, const char *fmt, ...)
{
	char *test;

	*dst = strtoul(s, &test, 10);
	if (*test != '\0') {
		va_list args;
		va_start(args, fmt);
		command_error_v(client, ACK_ERROR_ARG, fmt, args);
		va_end(args);
		return -1;
	}
	return 0;
}

static int mpd_fprintf__ check_int(struct client *client, int *dst,
                                   const char *s, const char *fmt, ...)
{
	char *test;

	*dst = strtol(s, &test, 10);
	if (*test != '\0' ||
	    (fmt == check_boolean && *dst != 0 && *dst != 1) ||
	    (fmt == check_non_negative && *dst < 0)) {
		va_list args;
		va_start(args, fmt);
		command_error_v(client, ACK_ERROR_ARG, fmt, args);
		va_end(args);
		return -1;
	}
	return 0;
}

static int print_playlist_result(struct client *client,
				 enum playlist_result result)
{
	switch (result) {
	case PLAYLIST_RESULT_SUCCESS:
		return 0;

	case PLAYLIST_RESULT_ERRNO:
		command_error(client, ACK_ERROR_SYSTEM, strerror(errno));
		return -1;

	case PLAYLIST_RESULT_NO_SUCH_SONG:
		command_error(client, ACK_ERROR_NO_EXIST, "No such song");
		return -1;

	case PLAYLIST_RESULT_NO_SUCH_LIST:
		command_error(client, ACK_ERROR_NO_EXIST, "No such playlist");
		return -1;

	case PLAYLIST_RESULT_LIST_EXISTS:
		command_error(client, ACK_ERROR_NO_EXIST,
			      "Playlist already exists");
		return -1;

	case PLAYLIST_RESULT_BAD_NAME:
		command_error(client, ACK_ERROR_ARG,
			      "playlist name is invalid: "
			      "playlist names may not contain slashes,"
			      " newlines or carriage returns");
		return -1;

	case PLAYLIST_RESULT_BAD_RANGE:
		command_error(client, ACK_ERROR_ARG, "Bad song index");
		return -1;

	case PLAYLIST_RESULT_NOT_PLAYING:
		command_error(client, ACK_ERROR_PLAYER_SYNC, "Not playing");
		return -1;

	case PLAYLIST_RESULT_TOO_LARGE:
		command_error(client, ACK_ERROR_PLAYLIST_MAX,
			      "playlist is at the max size");
		return -1;
	}

	assert(0);
	return -1;
}

static void addCommand(const char *name,
		       int reqPermission,
		       int minargs,
		       int maxargs,
		       CommandHandlerFunction handler_func)
{
	CommandEntry *cmd = xmalloc(sizeof(CommandEntry));
	cmd->cmd = name;
	cmd->min = minargs;
	cmd->max = maxargs;
	cmd->handler = handler_func;
	cmd->reqPermission = reqPermission;

	insertInList(commandList, cmd->cmd, cmd);
}

static int handleUrlHandlers(struct client *client,
			     mpd_unused int argc, mpd_unused char *argv[])
{
	return printRemoteUrlHandlers(client);
}

static int handleTagTypes(struct client *client,
			  mpd_unused int argc, mpd_unused char *argv[])
{
	tag_print_types(client);
	return 0;
}

static int handlePlay(struct client *client,
		      int argc, char *argv[])
{
	int song = -1;
	enum playlist_result result;

	if (argc == 2 && check_int(client, &song, argv[1], need_positive) < 0)
		return -1;
	result = playPlaylist(song, 0);
	return print_playlist_result(client, result);
}

static int handlePlayId(struct client *client,
			int argc, char *argv[])
{
	int id = -1;
	enum playlist_result result;

	if (argc == 2 && check_int(client, &id, argv[1], need_positive) < 0)
		return -1;

	result = playPlaylistById(id, 0);
	return print_playlist_result(client, result);
}

static int handleStop(mpd_unused struct client *client,
		      mpd_unused int argc, mpd_unused char *argv[])
{
	stopPlaylist();
	return 0;
}

static int handleCurrentSong(struct client *client,
			     mpd_unused int argc, mpd_unused char *argv[])
{
	int song = getPlaylistCurrentSong();
	enum playlist_result result;

	if (song < 0)
		return 0;

	result = playlistInfo(client, song);
	return print_playlist_result(client, result);
}

static int handlePause(struct client *client,
		       int argc, char *argv[])
{
	if (argc == 2) {
		int pause_flag;
		if (check_int(client, &pause_flag, argv[1], check_boolean, argv[1]) < 0)
			return -1;
		playerSetPause(pause_flag);
		return 0;
	}

	playerPause();
	return 0;
}

static int commandStatus(struct client *client,
			 mpd_unused int argc, mpd_unused char *argv[])
{
	const char *state = NULL;
	int updateJobId;
	int song;

	playPlaylistIfPlayerStopped();
	switch (getPlayerState()) {
	case PLAYER_STATE_STOP:
		state = COMMAND_STOP;
		break;
	case PLAYER_STATE_PAUSE:
		state = COMMAND_PAUSE;
		break;
	case PLAYER_STATE_PLAY:
		state = COMMAND_PLAY;
		break;
	}

	client_printf(client,
		      COMMAND_STATUS_VOLUME ": %i\n"
		      COMMAND_STATUS_REPEAT ": %i\n"
		      COMMAND_STATUS_RANDOM ": %i\n"
		      COMMAND_STATUS_PLAYLIST ": %li\n"
		      COMMAND_STATUS_PLAYLIST_LENGTH ": %i\n"
		      COMMAND_STATUS_CROSSFADE ": %i\n"
		      COMMAND_STATUS_STATE ": %s\n",
		      getVolumeLevel(),
		      getPlaylistRepeatStatus(),
		      getPlaylistRandomStatus(),
		      getPlaylistVersion(),
		      getPlaylistLength(),
		      (int)(getPlayerCrossFade() + 0.5),
		      state);

	song = getPlaylistCurrentSong();
	if (song >= 0) {
		client_printf(client,
			      COMMAND_STATUS_SONG ": %i\n"
			      COMMAND_STATUS_SONGID ": %i\n",
			      song, getPlaylistSongId(song));
	}
	if (getPlayerState() != PLAYER_STATE_STOP) {
		client_printf(client,
			      COMMAND_STATUS_TIME ": %i:%i\n"
			      COMMAND_STATUS_BITRATE ": %li\n"
			      COMMAND_STATUS_AUDIO ": %u:%i:%i\n",
			      getPlayerElapsedTime(), getPlayerTotalTime(),
			      getPlayerBitRate(),
			      getPlayerSampleRate(), getPlayerBits(),
			      getPlayerChannels());
	}

	if ((updateJobId = isUpdatingDB())) {
		client_printf(client,
			      COMMAND_STATUS_UPDATING_DB ": %i\n",
			      updateJobId);
	}

	if (getPlayerError() != PLAYER_ERROR_NOERROR) {
		client_printf(client,
			      COMMAND_STATUS_ERROR ": %s\n",
			      getPlayerErrorStr());
	}

	return 0;
}

static int handleKill(mpd_unused struct client *client,
		      mpd_unused int argc, mpd_unused char *argv[])
{
	return COMMAND_RETURN_KILL;
}

static int handleClose(mpd_unused struct client *client,
		       mpd_unused int argc, mpd_unused char *argv[])
{
	return COMMAND_RETURN_CLOSE;
}

static int handleAdd(struct client *client,
		     mpd_unused int argc, char *argv[])
{
	char *path = argv[1];
	enum playlist_result result;

	if (isRemoteUrl(path))
		return addToPlaylist(path, NULL);

	result = addAllIn(path);
	if (result == (enum playlist_result)-1) {
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");
		return -1;
	}

	return print_playlist_result(client, result);
}

static int handleAddId(struct client *client,
		       int argc, char *argv[])
{
	int added_id;
	enum playlist_result result = addToPlaylist(argv[1], &added_id);

	if (result != PLAYLIST_RESULT_SUCCESS)
		return result;

	if (argc == 3) {
		int to;
		if (check_int(client, &to, argv[2],
			      check_integer, argv[2]) < 0)
			return -1;
		result = moveSongInPlaylistById(added_id, to);
		if (result != PLAYLIST_RESULT_SUCCESS) {
			int ret = print_playlist_result(client, result);
			deleteFromPlaylistById(added_id);
			return ret;
		}
	}

	client_printf(client, "Id: %d\n", added_id);
	return result;
}

static int handleDelete(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int song;
	enum playlist_result result;

	if (check_int(client, &song, argv[1], need_positive) < 0)
		return -1;

	result = deleteFromPlaylist(song);
	return print_playlist_result(client, result);
}

static int handleDeleteId(struct client *client,
			  mpd_unused int argc, char *argv[])
{
	int id;
	enum playlist_result result;

	if (check_int(client, &id, argv[1], need_positive) < 0)
		return -1;

	result = deleteFromPlaylistById(id);
	return print_playlist_result(client, result);
}

static int handlePlaylist(struct client *client,
			  mpd_unused int argc, mpd_unused char *argv[])
{
	showPlaylist(client);
	return 0;
}

static int handleShuffle(mpd_unused struct client *client,
			 mpd_unused int argc, mpd_unused char *argv[])
{
	shufflePlaylist();
	return 0;
}

static int handleClear(mpd_unused struct client *client,
		       mpd_unused int argc, mpd_unused char *argv[])
{
	clearPlaylist();
	return 0;
}

static int handleSave(struct client *client,
		      mpd_unused int argc, char *argv[])
{
	enum playlist_result result;

	result = savePlaylist(argv[1]);
	return print_playlist_result(client, result);
}

static int handleLoad(struct client *client,
		      mpd_unused int argc, char *argv[])
{
	enum playlist_result result;

	result = loadPlaylist(client, argv[1]);
	return print_playlist_result(client, result);
}

static int handleListPlaylist(struct client *client,
			      mpd_unused int argc, char *argv[])
{
	int ret;

	ret = PlaylistInfo(client, argv[1], 0);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST, "No such playlist");

	return ret;
}

static int handleListPlaylistInfo(struct client *client,
				  mpd_unused int argc, char *argv[])
{
	int ret;

	ret = PlaylistInfo(client, argv[1], 1);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST, "No such playlist");

	return ret;
}

static int handleLsInfo(struct client *client,
			int argc, char *argv[])
{
	const char *path = "";
	const struct directory *directory;

	if (argc == 2)
		path = argv[1];

	directory = db_get_directory(path);
	if (directory == NULL) {
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory not found");
		return -1;
	}

	directory_print(client, directory);

	if (isRootDirectory(path))
		return lsPlaylists(client, path);

	return 0;
}

static int handleRm(struct client *client,
		    mpd_unused int argc, char *argv[])
{
	enum playlist_result result;

	result = deletePlaylist(argv[1]);
	return print_playlist_result(client, result);
}

static int handleRename(struct client *client,
			mpd_unused int argc, char *argv[])
{
	enum playlist_result result;

	result = renameStoredPlaylist(argv[1], argv[2]);
	return print_playlist_result(client, result);
}

static int handlePlaylistChanges(struct client *client,
				 mpd_unused int argc, char *argv[])
{
	uint32_t version;

	if (check_uint32(client, &version, argv[1], need_positive) < 0)
		return -1;
	return playlistChanges(client, version);
}

static int handlePlaylistChangesPosId(struct client *client,
				      mpd_unused int argc, char *argv[])
{
	uint32_t version;

	if (check_uint32(client, &version, argv[1], need_positive) < 0)
		return -1;
	return playlistChangesPosId(client, version);
}

static int handlePlaylistInfo(struct client *client,
			      int argc, char *argv[])
{
	int song = -1;
	enum playlist_result result;

	if (argc == 2 && check_int(client, &song, argv[1], need_positive) < 0)
		return -1;

	result = playlistInfo(client, song);
	return print_playlist_result(client, result);
}

static int handlePlaylistId(struct client *client,
			    int argc, char *argv[])
{
	int id = -1;
	enum playlist_result result;

	if (argc == 2 && check_int(client, &id, argv[1], need_positive) < 0)
		return -1;

	result = playlistId(client, id);
	return print_playlist_result(client, result);
}

static int handleFind(struct client *client,
		      int argc, char *argv[])
{
	int ret;

	LocateTagItem *items;
	int numItems = newLocateTagItemArrayFromArgArray(argv + 1,
							 argc - 1,
							 &items);

	if (numItems <= 0) {
		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
		return -1;
	}

	ret = findSongsIn(client, NULL, numItems, items);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");

	freeLocateTagItemArray(numItems, items);

	return ret;
}

static int handleSearch(struct client *client,
			int argc, char *argv[])
{
	int ret;

	LocateTagItem *items;
	int numItems = newLocateTagItemArrayFromArgArray(argv + 1,
							 argc - 1,
							 &items);

	if (numItems <= 0) {
		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
		return -1;
	}

	ret = searchForSongsIn(client, NULL, numItems, items);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");

	freeLocateTagItemArray(numItems, items);

	return ret;
}

static int handleCount(struct client *client,
		       int argc, char *argv[])
{
	int ret;

	LocateTagItem *items;
	int numItems = newLocateTagItemArrayFromArgArray(argv + 1,
							 argc - 1,
							 &items);

	if (numItems <= 0) {
		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
		return -1;
	}

	ret = searchStatsForSongsIn(client, NULL, numItems, items);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");

	freeLocateTagItemArray(numItems, items);

	return ret;
}

static int handlePlaylistFind(struct client *client,
			      int argc, char *argv[])
{
	LocateTagItem *items;
	int numItems = newLocateTagItemArrayFromArgArray(argv + 1,
							 argc - 1,
							 &items);

	if (numItems <= 0) {
		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
		return -1;
	}

	findSongsInPlaylist(client, numItems, items);

	freeLocateTagItemArray(numItems, items);

	return 0;
}

static int handlePlaylistSearch(struct client *client,
				int argc, char *argv[])
{
	LocateTagItem *items;
	int numItems = newLocateTagItemArrayFromArgArray(argv + 1,
							 argc - 1,
							 &items);

	if (numItems <= 0) {
		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
		return -1;
	}

	searchForSongsInPlaylist(client, numItems, items);

	freeLocateTagItemArray(numItems, items);

	return 0;
}

static int handlePlaylistDelete(struct client *client,
				mpd_unused int argc, char *argv[]) {
	char *playlist = argv[1];
	int from;
	enum playlist_result result;

	if (check_int(client, &from, argv[2], check_integer, argv[2]) < 0)
		return -1;

	result = removeOneSongFromStoredPlaylistByPath(playlist, from);
	return print_playlist_result(client, result);
}

static int handlePlaylistMove(struct client *client,
			      mpd_unused mpd_unused int argc, char *argv[])
{
	char *playlist = argv[1];
	int from, to;
	enum playlist_result result;

	if (check_int(client, &from, argv[2], check_integer, argv[2]) < 0)
		return -1;
	if (check_int(client, &to, argv[3], check_integer, argv[3]) < 0)
		return -1;

	result = moveSongInStoredPlaylistByPath(playlist, from, to);
	return print_playlist_result(client, result);
}

static int print_update_result(struct client *client, int ret)
{
	if (ret >= 0) {
		client_printf(client, "updating_db: %i\n", ret);
		return 0;
	}
	if (ret == -2)
		command_error(client, ACK_ERROR_ARG, "invalid path");
	else
		command_error(client, ACK_ERROR_UPDATE_ALREADY,
			      "already updating");
	return -1;
}

static int handleUpdate(struct client *client,
			mpd_unused int argc, char *argv[])
{
	char *path = NULL;

	assert(argc <= 2);
	if (argc == 2 && !(path = sanitizePathDup(argv[1]))) {
		command_error(client, ACK_ERROR_ARG, "invalid path");
		return -1;
	}
	return print_update_result(client, directory_update_init(path));
}

static int handleNext(mpd_unused struct client *client,
		      mpd_unused int argc, mpd_unused char *argv[])
{
	nextSongInPlaylist();
	return 0;
}

static int handlePrevious(mpd_unused struct client *client,
			  mpd_unused int argc, mpd_unused char *argv[])
{
	previousSongInPlaylist();
	return 0;
}

static int handleListAll(struct client *client,
			 mpd_unused int argc, char *argv[])
{
	char *directory = NULL;
	int ret;

	if (argc == 2)
		directory = argv[1];

	ret = printAllIn(client, directory);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");

	return ret;
}

static int handleVolume(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int change, ret;

	if (check_int(client, &change, argv[1], need_integer) < 0)
		return -1;

	ret = changeVolumeLevel(change, 1);
	if (ret == -1)
		command_error(client, ACK_ERROR_SYSTEM,
			      "problems setting volume");

	return ret;
}

static int handleSetVol(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int level, ret;

	if (check_int(client, &level, argv[1], need_integer) < 0)
		return -1;

	ret = changeVolumeLevel(level, 0);
	if (ret == -1)
		command_error(client, ACK_ERROR_SYSTEM,
			      "problems setting volume");

	return ret;
}

static int handleRepeat(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int status;

	if (check_int(client, &status, argv[1], need_integer) < 0)
		return -1;

	if (status != 0 && status != 1) {
		command_error(client, ACK_ERROR_ARG,
			      "\"%i\" is not 0 or 1", status);
		return -1;
	}

	setPlaylistRepeatStatus(status);
	return 0;
}

static int handleRandom(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int status;

	if (check_int(client, &status, argv[1], need_integer) < 0)
		return -1;

	if (status != 0 && status != 1) {
		command_error(client, ACK_ERROR_ARG,
			      "\"%i\" is not 0 or 1", status);
		return -1;
	}

	setPlaylistRandomStatus(status);
	return 0;
}

static int handleStats(struct client *client,
		       mpd_unused int argc, mpd_unused char *argv[])
{
	return printStats(client);
}

static int handleClearError(mpd_unused struct client *client,
			    mpd_unused int argc, mpd_unused char *argv[])
{
	clearPlayerError();
	return 0;
}

static int handleList(struct client *client,
		      int argc, char *argv[])
{
	int numConditionals;
	LocateTagItem *conditionals = NULL;
	int tagType = getLocateTagItemType(argv[1]);
	int ret;

	if (tagType < 0) {
		command_error(client, ACK_ERROR_ARG, "\"%s\" is not known", argv[1]);
		return -1;
	}

	if (tagType == LOCATE_TAG_ANY_TYPE) {
		command_error(client, ACK_ERROR_ARG,
			      "\"any\" is not a valid return tag type");
		return -1;
	}

	/* for compatibility with < 0.12.0 */
	if (argc == 3) {
		if (tagType != TAG_ITEM_ALBUM) {
			command_error(client, ACK_ERROR_ARG,
				      "should be \"%s\" for 3 arguments",
				      mpdTagItemKeys[TAG_ITEM_ALBUM]);
			return -1;
		}
		conditionals = newLocateTagItem(mpdTagItemKeys[TAG_ITEM_ARTIST],
						argv[2]);
		numConditionals = 1;
	} else {
		numConditionals =
		    newLocateTagItemArrayFromArgArray(argv + 2,
						      argc - 2, &conditionals);

		if (numConditionals < 0) {
			command_error(client, ACK_ERROR_ARG,
				      "not able to parse args");
			return -1;
		}
	}

	ret = listAllUniqueTags(client, tagType, numConditionals, conditionals);

	if (conditionals)
		freeLocateTagItemArray(numConditionals, conditionals);

	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");

	return ret;
}

static int handleMove(struct client *client,
		      mpd_unused int argc, char *argv[])
{
	int from, to;
	enum playlist_result result;

	if (check_int(client, &from, argv[1], check_integer, argv[1]) < 0)
		return -1;
	if (check_int(client, &to, argv[2], check_integer, argv[2]) < 0)
		return -1;
	result = moveSongInPlaylist(from, to);
	return print_playlist_result(client, result);
}

static int handleMoveId(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int id, to;
	enum playlist_result result;

	if (check_int(client, &id, argv[1], check_integer, argv[1]) < 0)
		return -1;
	if (check_int(client, &to, argv[2], check_integer, argv[2]) < 0)
		return -1;
	result = moveSongInPlaylistById(id, to);
	return print_playlist_result(client, result);
}

static int handleSwap(struct client *client,
		      mpd_unused int argc, char *argv[])
{
	int song1, song2;
	enum playlist_result result;

	if (check_int(client, &song1, argv[1], check_integer, argv[1]) < 0)
		return -1;
	if (check_int(client, &song2, argv[2], check_integer, argv[2]) < 0)
		return -1;
	result = swapSongsInPlaylist(song1, song2);
	return print_playlist_result(client, result);
}

static int handleSwapId(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int id1, id2;
	enum playlist_result result;

	if (check_int(client, &id1, argv[1], check_integer, argv[1]) < 0)
		return -1;
	if (check_int(client, &id2, argv[2], check_integer, argv[2]) < 0)
		return -1;
	result = swapSongsInPlaylistById(id1, id2);
	return print_playlist_result(client, result);
}

static int handleSeek(struct client *client,
		      mpd_unused int argc, char *argv[])
{
	int song, seek_time;
	enum playlist_result result;

	if (check_int(client, &song, argv[1], check_integer, argv[1]) < 0)
		return -1;
	if (check_int(client, &seek_time, argv[2], check_integer, argv[2]) < 0)
		return -1;

	result = seekSongInPlaylist(song, seek_time);
	return print_playlist_result(client, result);
}

static int handleSeekId(struct client *client,
			mpd_unused int argc, char *argv[])
{
	int id, seek_time;
	enum playlist_result result;

	if (check_int(client, &id, argv[1], check_integer, argv[1]) < 0)
		return -1;
	if (check_int(client, &seek_time, argv[2], check_integer, argv[2]) < 0)
		return -1;

	result = seekSongInPlaylistById(id, seek_time);
	return print_playlist_result(client, result);
}

static int handleListAllInfo(struct client *client,
			     mpd_unused int argc, char *argv[])
{
	char *directory = NULL;
	int ret;

	if (argc == 2)
		directory = argv[1];

	ret = printInfoForAllIn(client, directory);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");

	return ret;
}

static int handlePing(mpd_unused struct client *client,
		      mpd_unused int argc, mpd_unused char *argv[])
{
	return 0;
}

static int handlePassword(struct client *client,
			  mpd_unused int argc, char *argv[])
{
	int permission = 0;

	if (getPermissionFromPassword(argv[1], &permission) < 0) {
		command_error(client, ACK_ERROR_PASSWORD, "incorrect password");
		return -1;
	}

	client_set_permission(client, permission);

	return 0;
}

static int handleCrossfade(struct client *client,
			   mpd_unused int argc, char *argv[])
{
	int xfade_time;

	if (check_int(client, &xfade_time, argv[1], check_non_negative, argv[1]) < 0)
		return -1;
	setPlayerCrossFade(xfade_time);

	return 0;
}

static int handleEnableDevice(struct client *client,
			      mpd_unused int argc, char *argv[])
{
	int device, ret;

	if (check_int(client, &device, argv[1], check_non_negative, argv[1]) < 0)
		return -1;

	ret = enableAudioDevice(device);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "No such audio output");

	return ret;
}

static int handleDisableDevice(struct client *client,
			       mpd_unused int argc, char *argv[])
{
	int device, ret;

	if (check_int(client, &device, argv[1], check_non_negative, argv[1]) < 0)
		return -1;

	ret = disableAudioDevice(device);
	if (ret == -1)
		command_error(client, ACK_ERROR_NO_EXIST,
			      "No such audio output");

	return ret;
}

static int handleDevices(struct client *client,
			 mpd_unused int argc, mpd_unused char *argv[])
{
	printAudioDevices(client);

	return 0;
}

/* don't be fooled, this is the command handler for "commands" command */
static int handleCommands(struct client *client,
			  mpd_unused int argc, mpd_unused char *argv[])
{
	const int permission = client_get_permission(client);
	ListNode *node = commandList->firstNode;
	CommandEntry *cmd;

	while (node != NULL) {
		cmd = (CommandEntry *) node->data;
		if (cmd->reqPermission == (permission & cmd->reqPermission)) {
			client_printf(client, "command: %s\n", cmd->cmd);
		}

		node = node->nextNode;
	}

	return 0;
}

static int handleNotcommands(struct client *client,
			     mpd_unused int argc, mpd_unused char *argv[])
{
	const int permission = client_get_permission(client);
	ListNode *node = commandList->firstNode;
	CommandEntry *cmd;

	while (node != NULL) {
		cmd = (CommandEntry *) node->data;

		if (cmd->reqPermission != (permission & cmd->reqPermission)) {
			client_printf(client, "command: %s\n", cmd->cmd);
		}

		node = node->nextNode;
	}

	return 0;
}

static int handlePlaylistClear(struct client *client,
			       mpd_unused int argc, char *argv[])
{
	enum playlist_result result;

	result = clearStoredPlaylist(argv[1]);
	return print_playlist_result(client, result);
}

static int handlePlaylistAdd(struct client *client,
			     mpd_unused int argc, char *argv[])
{
	char *playlist = argv[1];
	char *path = argv[2];
	enum playlist_result result;

	if (isRemoteUrl(path))
		result = addToStoredPlaylist(path, playlist);
	else
		result = addAllInToStoredPlaylist(path, playlist);

	if (result == (enum playlist_result)-1) {
		command_error(client, ACK_ERROR_NO_EXIST,
			      "directory or file not found");
		return -1;
	}

	return print_playlist_result(client, result);
}

void initCommands(void)
{
	commandList = makeList(free, 1);

	/* addCommand(name,                  permission,         min, max, handler); */
	addCommand(COMMAND_PLAY,             PERMISSION_CONTROL, 0,   1,   handlePlay);
	addCommand(COMMAND_PLAYID,           PERMISSION_CONTROL, 0,   1,   handlePlayId);
	addCommand(COMMAND_STOP,             PERMISSION_CONTROL, 0,   0,   handleStop);
	addCommand(COMMAND_CURRENTSONG,      PERMISSION_READ,    0,   0,   handleCurrentSong);
	addCommand(COMMAND_PAUSE,            PERMISSION_CONTROL, 0,   1,   handlePause);
	addCommand(COMMAND_STATUS,           PERMISSION_READ,    0,   0,   commandStatus);
	addCommand(COMMAND_KILL,             PERMISSION_ADMIN,   -1,  -1,  handleKill);
	addCommand(COMMAND_CLOSE,            PERMISSION_NONE,    -1,  -1,  handleClose);
	addCommand(COMMAND_ADD,              PERMISSION_ADD,     1,   1,   handleAdd);
	addCommand(COMMAND_ADDID,            PERMISSION_ADD,     1,   2,   handleAddId);
	addCommand(COMMAND_DELETE,           PERMISSION_CONTROL, 1,   1,   handleDelete);
	addCommand(COMMAND_DELETEID,         PERMISSION_CONTROL, 1,   1,   handleDeleteId);
	addCommand(COMMAND_PLAYLIST,         PERMISSION_READ,    0,   0,   handlePlaylist);
	addCommand(COMMAND_PLAYLISTID,       PERMISSION_READ,    0,   1,   handlePlaylistId);
	addCommand(COMMAND_SHUFFLE,          PERMISSION_CONTROL, 0,   0,   handleShuffle);
	addCommand(COMMAND_CLEAR,            PERMISSION_CONTROL, 0,   0,   handleClear);
	addCommand(COMMAND_SAVE,             PERMISSION_CONTROL, 1,   1,   handleSave);
	addCommand(COMMAND_LOAD,             PERMISSION_ADD,     1,   1,   handleLoad);
	addCommand(COMMAND_LISTPLAYLIST,     PERMISSION_READ,    1,   1,   handleListPlaylist);
	addCommand(COMMAND_LISTPLAYLISTINFO, PERMISSION_READ,    1,   1,   handleListPlaylistInfo);
	addCommand(COMMAND_LSINFO,           PERMISSION_READ,    0,   1,   handleLsInfo);
	addCommand(COMMAND_RM,               PERMISSION_CONTROL, 1,   1,   handleRm);
	addCommand(COMMAND_PLAYLISTINFO,     PERMISSION_READ,    0,   1,   handlePlaylistInfo);
	addCommand(COMMAND_FIND,             PERMISSION_READ,    2,   -1,  handleFind);
	addCommand(COMMAND_SEARCH,           PERMISSION_READ,    2,   -1,  handleSearch);
	addCommand(COMMAND_UPDATE,           PERMISSION_ADMIN,   0,   1,   handleUpdate);
	addCommand(COMMAND_NEXT,             PERMISSION_CONTROL, 0,   0,   handleNext);
	addCommand(COMMAND_PREVIOUS,         PERMISSION_CONTROL, 0,   0,   handlePrevious);
	addCommand(COMMAND_LISTALL,          PERMISSION_READ,    0,   1,   handleListAll);
	addCommand(COMMAND_VOLUME,           PERMISSION_CONTROL, 1,   1,   handleVolume);
	addCommand(COMMAND_REPEAT,           PERMISSION_CONTROL, 1,   1,   handleRepeat);
	addCommand(COMMAND_RANDOM,           PERMISSION_CONTROL, 1,   1,   handleRandom);
	addCommand(COMMAND_STATS,            PERMISSION_READ,    0,   0,   handleStats);
	addCommand(COMMAND_CLEAR_ERROR,      PERMISSION_CONTROL, 0,   0,   handleClearError);
	addCommand(COMMAND_LIST,             PERMISSION_READ,    1,   -1,  handleList);
	addCommand(COMMAND_MOVE,             PERMISSION_CONTROL, 2,   2,   handleMove);
	addCommand(COMMAND_MOVEID,           PERMISSION_CONTROL, 2,   2,   handleMoveId);
	addCommand(COMMAND_SWAP,             PERMISSION_CONTROL, 2,   2,   handleSwap);
	addCommand(COMMAND_SWAPID,           PERMISSION_CONTROL, 2,   2,   handleSwapId);
	addCommand(COMMAND_SEEK,             PERMISSION_CONTROL, 2,   2,   handleSeek);
	addCommand(COMMAND_SEEKID,           PERMISSION_CONTROL, 2,   2,   handleSeekId);
	addCommand(COMMAND_LISTALLINFO,      PERMISSION_READ,    0,   1,   handleListAllInfo);
	addCommand(COMMAND_PING,             PERMISSION_NONE,    0,   0,   handlePing);
	addCommand(COMMAND_SETVOL,           PERMISSION_CONTROL, 1,   1,   handleSetVol);
	addCommand(COMMAND_PASSWORD,         PERMISSION_NONE,    1,   1,   handlePassword);
	addCommand(COMMAND_CROSSFADE,        PERMISSION_CONTROL, 1,   1,   handleCrossfade);
	addCommand(COMMAND_URL_HANDLERS,     PERMISSION_READ,    0,   0,   handleUrlHandlers);
	addCommand(COMMAND_PLCHANGES,        PERMISSION_READ,    1,   1,   handlePlaylistChanges);
	addCommand(COMMAND_PLCHANGESPOSID,   PERMISSION_READ,    1,   1,   handlePlaylistChangesPosId);
	addCommand(COMMAND_ENABLE_DEV,       PERMISSION_ADMIN,   1,   1,   handleEnableDevice);
	addCommand(COMMAND_DISABLE_DEV,      PERMISSION_ADMIN,   1,   1,   handleDisableDevice);
	addCommand(COMMAND_DEVICES,          PERMISSION_READ,    0,   0,   handleDevices);
	addCommand(COMMAND_COMMANDS,         PERMISSION_NONE,    0,   0,   handleCommands);
	addCommand(COMMAND_NOTCOMMANDS,      PERMISSION_NONE,    0,   0,   handleNotcommands);
	addCommand(COMMAND_PLAYLISTCLEAR,    PERMISSION_CONTROL, 1,   1,   handlePlaylistClear);
	addCommand(COMMAND_PLAYLISTADD,      PERMISSION_CONTROL, 2,   2,   handlePlaylistAdd);
	addCommand(COMMAND_PLAYLISTFIND,     PERMISSION_READ,    2,   -1,  handlePlaylistFind);
	addCommand(COMMAND_PLAYLISTSEARCH,   PERMISSION_READ,    2,   -1,  handlePlaylistSearch);
	addCommand(COMMAND_PLAYLISTMOVE,     PERMISSION_CONTROL, 3,   3,   handlePlaylistMove);
	addCommand(COMMAND_PLAYLISTDELETE,   PERMISSION_CONTROL, 2,   2,   handlePlaylistDelete);
	addCommand(COMMAND_TAGTYPES,         PERMISSION_READ,    0,   0,   handleTagTypes);
	addCommand(COMMAND_COUNT,            PERMISSION_READ,    2,   -1,  handleCount);
	addCommand(COMMAND_RENAME,           PERMISSION_CONTROL, 2,   2,   handleRename);

	sortList(commandList);
}

void finishCommands(void)
{
	freeList(commandList);
}

static int checkArgcAndPermission(CommandEntry * cmd, struct client *client,
				  int permission, int argc, char *argv[])
{
	int min = cmd->min + 1;
	int max = cmd->max + 1;

	if (cmd->reqPermission != (permission & cmd->reqPermission)) {
		if (client != NULL)
			command_error(client, ACK_ERROR_PERMISSION,
				      "you don't have permission for \"%s\"",
				      cmd->cmd);
		return -1;
	}

	if (min == 0)
		return 0;

	if (min == max && max != argc) {
		if (client != NULL)
			command_error(client, ACK_ERROR_ARG,
				      "wrong number of arguments for \"%s\"",
				      argv[0]);
		return -1;
	} else if (argc < min) {
		if (client != NULL)
			command_error(client, ACK_ERROR_ARG,
				      "too few arguments for \"%s\"", argv[0]);
		return -1;
	} else if (argc > max && max /* != 0 */ ) {
		if (client != NULL)
			command_error(client, ACK_ERROR_ARG,
				      "too many arguments for \"%s\"", argv[0]);
		return -1;
	} else
		return 0;
}

static CommandEntry *getCommandEntryAndCheckArgcAndPermission(struct client *client,
							      int permission,
							      int argc,
							      char *argv[])
{
	static char unknown[] = "";
	CommandEntry *cmd;

	current_command = unknown;

	if (argc == 0)
		return NULL;

	if (!findInList(commandList, argv[0], (void *)&cmd)) {
		if (client != NULL)
			command_error(client, ACK_ERROR_UNKNOWN,
				      "unknown command \"%s\"", argv[0]);
		return NULL;
	}

	current_command = cmd->cmd;

	if (checkArgcAndPermission(cmd, client, permission, argc, argv) < 0) {
		return NULL;
	}

	return cmd;
}

int processCommand(struct client *client, char *commandString)
{
	int argc;
	char *argv[COMMAND_ARGV_MAX] = { NULL };
	CommandEntry *cmd;
	int ret = -1;

	if (!(argc = buffer2array(commandString, argv, COMMAND_ARGV_MAX)))
		return 0;

	cmd = getCommandEntryAndCheckArgcAndPermission(client,
						       client_get_permission(client),
						       argc, argv);
	if (cmd)
		ret = cmd->handler(client, argc, argv);

	current_command = NULL;

	return ret;
}

int processListOfCommands(struct client *client,
			  int listOK, struct strnode *list)
{
	struct strnode *cur = list;
	int ret = 0;

	command_listNum = 0;

	while (cur) {
		DEBUG("processListOfCommands: process command \"%s\"\n",
		      cur->data);
		ret = processCommand(client, cur->data);
		DEBUG("processListOfCommands: command returned %i\n", ret);
		if (ret != 0 || client_is_expired(client))
			goto out;
		else if (listOK)
			client_puts(client, "list_OK\n");
		command_listNum++;
		cur = cur->next;
	}
out:
	command_listNum = 0;
	return ret;
}