aboutsummaryrefslogtreecommitdiffstats
path: root/include/identity.php
blob: 9aa7d98c046c1ac1cb39ce1d45a5bae7eebd9f51 (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
<?php /** @file */

require_once('include/zot.php');
require_once('include/crypto.php');


/**
 * @function identity_check_service_class($account_id)
 *     Called when creating a new channel. Checks the account's service class and number
 * of current channels to determine whether creating a new channel is within the current
 * service class constraints.
 *
 * @param int $account_id
 *     Account_id used for this request
 *
 * @returns array
 *       'success' => boolean true if creating a new channel is allowed for this account
 *       'message' => if success is false, optional error text
 */
 

function identity_check_service_class($account_id) {
	$ret = array('success' => false, $message => '');
	
	$r = q("select count(channel_id) as total from channel where channel_account_id = %d and not ( channel_pageflags & %d ) ",
		intval($account_id),
		intval(PAGE_REMOVED)
	);
	if(! ($r && count($r))) {
		$ret['message'] = t('Unable to obtain identity information from database');
		return $ret;
	} 

	if(! service_class_allows($account_id,'total_identities',$r[0]['total'])) {
		$result['message'] .= upgrade_message();
		return $result;
	}

	$ret['success'] = true;
	return $ret;
}


/**
 * @function validate_channelname($name)
 *     Determine if the channel name is allowed when creating a new channel.
 * This action is pluggable.
 *
 * @param string $name
 *
 * @returns nil return if name is valid, or string describing the error state.
 *
 * We're currently only checking for an empty name or one that exceeds our storage limit (255 chars).
 * 255 chars is probably going to create a mess on some pages. 
 * Plugins can set additional policies such as full name requirements, character sets, multi-byte
 * length, etc. 
 *
 */

function validate_channelname($name) {

	if(! $name)
		return t('Empty name');
	if(strlen($name) > 255)
		return t('Name too long');
	$arr = array('name' => $name);
	call_hooks('validate_channelname',$arr);
	if(x($arr,'message'))
		return $arr['message'];
	return;
}


/**
 * @function create_sys_channel()
 *     Create a system channel - which has no account attached
 *
 */

function create_sys_channel() {
	if(get_sys_channel())
		return;
	create_identity(array(
		'account_id' => 'xxx',  // This will create an identity with an (integer) account_id of 0, but account_id is required
		'nickname' => 'sys',
		'name' => 'System',
		'pageflags' => PAGE_SYSTEM,
		'publish' => 0,
		'xchanflags' => XCHAN_FLAGS_SYSTEM
	));
}

function get_sys_channel() {
	$r = q("select * from channel left join xchan on channel_hash = xchan_hash where (channel_pageflags & %d) limit 1",
		intval(PAGE_SYSTEM)
	);
	if($r)
		return $r[0];
	return false;
}


/**
 * @channel_total()
 *   Return the total number of channels on this site. No filtering is performed except to check PAGE_REMOVED
 *
 * @returns int 
 *   on error returns boolean false
 *
 */

function channel_total() {
	$r = q("select channel_id from channel where not ( channel_pageflags & %d )",
		intval(PAGE_REMOVED)
	);

	if(is_array($r))
		return count($r);
	return false;
}


/**
 * @function create_identity($arr)
 *     Create a new channel
 * Also creates the related xchan, hubloc, profile, and "self" abook records, and an 
 * empty "Friends" group/collection for the new channel
 *
 * @param array $arr
 *       'name'       => full name of channel
 *       'nickname'   => "email/url-compliant" nickname
 *       'account_id' => account_id to attach with this channel
 *       [other identity fields as desired]
 *
 * @returns array
 *     'success' => boolean true or false
 *     'message' => optional error text if success is false
 *     'channel' => if successful the created channel array
 */
 
function create_identity($arr) {

	$a = get_app();
	$ret = array('success' => false);

	if(! $arr['account_id']) {
		$ret['message'] = t('No account identifier');
		return $ret;
	}
	$ret=identity_check_service_class($arr['account_id']);
	if (!$ret['success']) { 
		return $ret;
	}

	$nick = mb_strtolower(trim($arr['nickname']));
	if(! $nick) {
		$ret['message'] = t('Nickname is required.');
		return $ret;
	}

	$name = escape_tags($arr['name']);
	$pageflags = ((x($arr,'pageflags')) ? intval($arr['pageflags']) : PAGE_NORMAL);
	$xchanflags = ((x($arr,'xchanflags')) ? intval($arr['xchanflags']) : XCHAN_FLAGS_NORMAL);
	$name_error = validate_channelname($arr['name']);
	if($name_error) {
		$ret['message'] = $name_error;
		return $ret;
	}

	if(check_webbie(array($nick)) !== $nick) {
		$ret['message'] = t('Nickname has unsupported characters or is already being used on this site.');
		return $ret;
	}

	$guid = zot_new_uid($nick);
	$key = new_keypair(4096);


	$sig = base64url_encode(rsa_sign($guid,$key['prvkey']));
	$hash = base64url_encode(hash('whirlpool',$guid . $sig,true));

	// Force a few things on the short term until we can provide a theme or app with choice

	$publish = 1;

	if(array_key_exists('publish', $arr))
		$publish = intval($arr['publish']);

	$primary = true;
		
	if(array_key_exists('primary', $arr))
		$primary = intval($arr['primary']);

	$perms_sql = '';

	$defperms = site_default_perms();
	$global_perms = get_perms();
	foreach($defperms as $p => $v) {
		$perms_keys .= ', ' . $global_perms[$p][0];
		$perms_vals .= ', ' . intval($v);
	}

	$r = q("insert into channel ( channel_account_id, channel_primary, 
		channel_name, channel_address, channel_guid, channel_guid_sig,
		channel_hash, channel_prvkey, channel_pubkey, channel_pageflags $perms_keys )
		values ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d $perms_vals ) ",

		intval($arr['account_id']),
		intval($primary),
		dbesc($name),
		dbesc($nick),
		dbesc($guid),
		dbesc($sig),
		dbesc($hash),
		dbesc($key['prvkey']),
		dbesc($key['pubkey']),
		intval($pageflags)
	);
			



	$r = q("select * from channel where channel_account_id = %d 
		and channel_guid = '%s' limit 1",
		intval($arr['account_id']),
		dbesc($guid)
	);

	if(! $r) {
		$ret['message'] = t('Unable to retrieve created identity');
		return $ret;
	}
	
	$ret['channel'] = $r[0];

	if(intval($arr['account_id']))
		set_default_login_identity($arr['account_id'],$ret['channel']['channel_id'],false);

	// Create a verified hub location pointing to this site.

	$r = q("insert into hubloc ( hubloc_guid, hubloc_guid_sig, hubloc_hash, hubloc_addr, hubloc_flags, 
		hubloc_url, hubloc_url_sig, hubloc_host, hubloc_callback, hubloc_sitekey )
		values ( '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s' )",
		dbesc($guid),
		dbesc($sig),
		dbesc($hash),
		dbesc($ret['channel']['channel_address'] . '@' . get_app()->get_hostname()),
		intval(($primary) ? HUBLOC_FLAGS_PRIMARY : 0),
		dbesc(z_root()),
		dbesc(base64url_encode(rsa_sign(z_root(),$ret['channel']['channel_prvkey']))),
		dbesc(get_app()->get_hostname()),
		dbesc(z_root() . '/post'),
		dbesc(get_config('system','pubkey'))
	);
	if(! $r)
		logger('create_identity: Unable to store hub location');


	$newuid = $ret['channel']['channel_id'];

	$r = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_l, xchan_photo_m, xchan_photo_s, xchan_addr, xchan_url, xchan_follow, xchan_connurl, xchan_name, xchan_network, xchan_photo_date, xchan_name_date, xchan_flags ) values ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
		dbesc($hash),
		dbesc($guid),
		dbesc($sig),
		dbesc($key['pubkey']),
		dbesc($a->get_baseurl() . "/photo/profile/l/{$newuid}"),
		dbesc($a->get_baseurl() . "/photo/profile/m/{$newuid}"),
		dbesc($a->get_baseurl() . "/photo/profile/s/{$newuid}"),
		dbesc($ret['channel']['channel_address'] . '@' . get_app()->get_hostname()),
		dbesc(z_root() . '/channel/' . $ret['channel']['channel_address']),
		dbesc(z_root() . '/follow?f=&url=%s'),
		dbesc(z_root() . '/poco/' . $ret['channel']['channel_address']),
		dbesc($ret['channel']['channel_name']),
		dbesc('zot'),
		dbesc(datetime_convert()),
		dbesc(datetime_convert()),
		intval($xchanflags)
	);

	// Not checking return value. 
	// It's ok for this to fail if it's an imported channel, and therefore the hash is a duplicate
		

	$r = q("INSERT INTO profile ( aid, uid, profile_guid, profile_name, is_default, publish, name, photo, thumb)
		VALUES ( %d, %d, '%s', '%s', %d, %d, '%s', '%s', '%s') ",
		intval($ret['channel']['channel_account_id']),
		intval($newuid),
		dbesc(random_string()),
		t('Default Profile'),
		1,
		$publish,
		dbesc($ret['channel']['channel_name']),
		dbesc($a->get_baseurl() . "/photo/profile/l/{$newuid}"),
		dbesc($a->get_baseurl() . "/photo/profile/m/{$newuid}")
	);

	$r = q("insert into abook ( abook_account, abook_channel, abook_xchan, abook_closeness, abook_created, abook_updated, abook_flags )
		values ( %d, %d, '%s', %d, '%s', '%s', %d ) ",
		intval($ret['channel']['channel_account_id']),
		intval($newuid),
		dbesc($hash),
		intval(0),
		dbesc(datetime_convert()),
		dbesc(datetime_convert()),
		intval(ABOOK_FLAG_SELF)
	);

	if(intval($ret['channel']['channel_account_id'])) {

		// Create a group with no members. This allows somebody to use it 
		// right away as a default group for new contacts. 

		require_once('include/group.php');
		group_add($newuid, t('Friends'));

		call_hooks('register_account', $newuid);
	
		proc_run('php','include/directory.php', $ret['channel']['channel_id']);
	}

	$ret['success'] = true;
	return $ret;

}


/**
 * @function set_default_login_identity($account_id, $channel_id, $force = true)
 *       Set default channel to be used on login
 *
 * @param int $account_id
 *       login account
 * @param int $channel_id
 *       channel id to set as default for this account
 * @param boolean force
 *       if true, set this default unconditionally
 *       if $force is false only do this if there is no existing default
 * 
 * @returns nil
 */

function set_default_login_identity($account_id,$channel_id,$force = true) {
	$r = q("select account_default_channel from account where account_id = %d limit 1",
		intval($account_id)
	);
	if($r) {
		if((intval($r[0]['account_default_channel']) == 0) || ($force)) {
			$r = q("update account set account_default_channel = %d where account_id = %d limit 1",
				intval($channel_id),
				intval($account_id)
			);
		}
	}
}

/**
 * @function identity_basic_export($channel_id)
 *     Create an array representing the important channel information
 * which would be necessary to create a nomadic identity clone. This includes
 * most channel resources and connection information with the exception of content.
 *
 * @param int $channel_id
 *     Channel_id to export
 *
 *
 * @returns array
 *     See function for details
 *
 */

function identity_basic_export($channel_id) {

	/*
	 * Red basic channel export
	 */

	$ret = array();

	$ret['compatibility'] = array('project' => RED_PLATFORM, 'version' => RED_VERSION, 'database' => DB_UPDATE_VERSION);

	$r = q("select * from channel where channel_id = %d limit 1",
		intval($channel_id)
	);
	if($r)
		$ret['channel'] = $r[0];

	$r = q("select * from profile where uid = %d",
		intval($channel_id)
	);
	if($r)
		$ret['profile'] = $r;

	$xchans = array();
	$r = q("select * from abook where abook_channel = %d ",
		intval($channel_id)
	);
	if($r) {
		$ret['abook'] = $r;

		foreach($r as $rr)
			$xchans[] = $rr['abook_xchan'];
		stringify_array_elms($xchans);
	}

	if($xchans) {
		$r = q("select * from xchan where xchan_hash in ( " . implode(',',$xchans) . " ) ");
		if($r)
			$ret['xchan'] = $r;
		
		$r = q("select * from hubloc where hubloc_hash in ( " . implode(',',$xchans) . " ) ");
		if($r)
			$ret['hubloc'] = $r;
	}

	$r = q("select * from `groups` where uid = %d ",
		intval($channel_id)
	);

	if($r)
		$ret['group'] = $r;

	$r = q("select * from group_member where uid = %d ",
		intval($channel_id)
	);
	if($r)
		$ret['group_member'] = $r;

	$r = q("select * from pconfig where uid = %d",
		intval($channel_id)
	);
	if($r)
		$ret['config'] = $r;


	$r = q("select type, data from photo where scale = 4 and profile = 1 and uid = %d limit 1",
		intval($channel_id)
	);

	if($r) {
		$ret['photo'] = array('type' => $r[0]['type'], 'data' => base64url_encode($r[0]['data']));
	}


	return $ret;
}



/**
 *
 * @function : profile_load(&$a, $nickname, $profile)
 *     Generate
 * @param App $a
 * @param string $nickname
 * @param string $profile
 *
 * Summary: Loads a profile into the App structure.
 * The function requires a writeable copy of the main App structure, and the nickname
 * of a valid channel.
 *
 * Permissions of the current observer are checked. If a restricted profile is available
 * to the current observer, that will be loaded instead of the channel default profile.
 * 
 * The channel owner can set $profile to a valid profile_guid to preview that profile.
 *
 * The channel default theme is also selected for use, unless over-riden elsewhere.
 *
 */


function profile_load(&$a, $nickname, $profile = '') {

	logger('profile_load: ' . $nickname . (($profile) ? ' profile: ' . $profile : ''));

	$user = q("select channel_id from channel where channel_address = '%s' limit 1",
		dbesc($nickname)
	);
		
	if(! $user) {
		logger('profile error: ' . $a->query_string, LOGGER_DEBUG);
		notice( t('Requested channel is not available.') . EOL );
		$a->error = 404;
		return;
	}

	// get the current observer
	$observer = $a->get_observer();

	$can_view_profile = true;

	// Can the observer see our profile?
	require_once('include/permissions.php');
	if(! perm_is_allowed($user[0]['channel_id'],$observer['xchan_hash'],'view_profile')) {
		$can_view_profile = false;
	}

	if(! $profile) {
		$r = q("SELECT abook_profile FROM abook WHERE abook_xchan = '%s' and abook_channel = '%d' limit 1",
			dbesc($observer['xchan_hash']),
			intval($user[0]['channel_id'])
		);
		if($r)
			$profile = $r[0]['abook_profile'];
	}
	$p = null;

	if($profile) {
		$p = q("SELECT profile.uid AS profile_uid, profile.*, channel.* FROM profile
				LEFT JOIN channel ON profile.uid = channel.channel_id
				WHERE channel.channel_address = '%s' AND profile.profile_guid = '%s' LIMIT 1",
				dbesc($nickname),
				dbesc($profile)
		);
	}

	if(! $p) {
		$r = q("SELECT profile.uid AS profile_uid, profile.*, channel.* FROM profile
			LEFT JOIN channel ON profile.uid = channel.channel_id
			WHERE channel.channel_address = '%s' and not ( channel_pageflags & %d ) 
			AND profile.is_default = 1 LIMIT 1",
			dbesc($nickname),
			intval(PAGE_REMOVED)
		);
	}

	if(! $p) {
		logger('profile error: ' . $a->query_string, LOGGER_DEBUG);
		notice( t('Requested profile is not available.') . EOL );
		$a->error = 404;
		return;
	}
	
	// fetch user tags if this isn't the default profile

	if(! $p[0]['is_default']) {
		$x = q("select `keywords` from `profile` where uid = %d and `is_default` = 1 limit 1",
				intval($profile_uid)
		);
		if($x && $can_view_profile)
			$p[0]['keywords'] = $x[0]['keywords'];
	}

	if($p[0]['keywords']) {
		$keywords = str_replace(array('#',',',' ',',,'),array('',' ',',',','),$p[0]['keywords']);
		if(strlen($keywords) && $can_view_profile)
			$a->page['htmlhead'] .= '<meta name="keywords" content="' . htmlentities($keywords,ENT_COMPAT,'UTF-8') . '" />' . "\r\n" ;

	}

	if($can_view_profile) {
		$a->profile = $p[0];
		$online = get_online_status($nickname);
		$a->profile['online_status'] = $online['result'];

		$a->profile_uid = $p[0]['profile_uid'];

		$a->page['title'] = $a->profile['channel_name'] . " - " . $a->profile['channel_address'] . "@" . $a->get_hostname();
	}

	if(local_user()) {
		$a->profile['channel_mobile_theme'] = get_pconfig(local_user(),'system', 'mobile_theme');
		$_SESSION['mobile_theme'] = $a->profile['channel_mobile_theme'];
	}

	/**
	 * load/reload current theme info
	 */

	$_SESSION['theme'] = $p[0]['channel_theme'];

	$a->set_template_engine(); // reset the template engine to the default in case the user's theme doesn't specify one

	$theme_info_file = "view/theme/".current_theme()."/php/theme.php";
	if (file_exists($theme_info_file)){
		require_once($theme_info_file);
	}

	if(! $can_view_profile) {
		// permission denied
		notice( t(' Sorry, you don\'t have the permission to view this profile. ') . EOL);
		return;
	}

	return;
}

function profile_create_sidebar(&$a,$connect = true) {

	$block = (((get_config('system','block_public')) && (! local_user()) && (! remote_user())) ? true : false);

	$a->set_widget('profile',profile_sidebar($a->profile, $block, $connect));
	return;
}


/**
 *
 * Function: profile_sidebar
 *
 * Formats a profile for display in the sidebar.
 * It is very difficult to templatise the HTML completely
 * because of all the conditional logic.
 *
 * @parameter: array $profile
 *
 * Returns HTML string stuitable for sidebar inclusion
 * Exceptions: Returns empty string if passed $profile is wrong type or not populated
 *
 */



function profile_sidebar($profile, $block = 0, $show_connect = true) {

	$a = get_app();

	$observer = $a->get_observer();

	$o = '';
	$location = false;
	$address = false;
	$pdesc = true;

	if((! is_array($profile)) && (! count($profile)))
		return $o;


	head_set_icon($profile['thumb']);

	$is_owner = (($profile['uid'] == local_user()) ? true : false);

	$profile['picdate'] = urlencode($profile['picdate']);

	call_hooks('profile_sidebar_enter', $profile);

	require_once('include/Contact.php');

	if($show_connect) {

		// This will return an empty string if we're already connected.

		$connect_url = rconnect_url($profile['uid'],get_observer_hash());
		$connect = (($connect_url) ? t('Connect') : '');
		if($connect_url) 
			$connect_url = sprintf($connect_url,urlencode($profile['channel_address'] . '@' . $a->get_hostname()));

		// premium channel - over-ride

		if($profile['channel_pageflags'] & PAGE_PREMIUM)
			$connect_url = z_root() . '/connect/' . $profile['channel_address'];
	}

	// show edit profile to yourself
	if($is_owner) {

		$profile['menu'] = array(
			'chg_photo' => t('Change profile photo'),
			'entries' => array(),
		);


		if(feature_enabled(local_user(),'multi_profiles')) {
			$profile['edit'] = array($a->get_baseurl(). '/profiles', t('Profiles'),"", t('Manage/edit profiles'));
			$profile['menu']['cr_new'] = t('Create New Profile');
		}
		else
			$profile['edit'] = array($a->get_baseurl() . '/profiles/' . $profile['id'], t('Edit Profile'),'',t('Edit Profile'));
						
		$r = q("SELECT * FROM `profile` WHERE `uid` = %d",
				local_user());
		

		if($r) {
			foreach($r as $rr) {
				$profile['menu']['entries'][] = array(
					'photo'                => $rr['thumb'],
					'id'                   => $rr['id'],
					'alt'                  => t('Profile Image'),
					'profile_name'         => $rr['profile_name'],
					'isdefault'            => $rr['is_default'],
					'visible_to_everybody' => t('visible to everybody'),
					'edit_visibility'      => t('Edit visibility'),
				);
			}
		}
	}


	if((x($profile,'address') == 1)
		|| (x($profile,'locality') == 1)
		|| (x($profile,'region') == 1)
		|| (x($profile,'postal_code') == 1)
		|| (x($profile,'country_name') == 1))
		$location = t('Location:');

	$gender   = ((x($profile,'gender')   == 1) ? t('Gender:')   : False);
	$marital  = ((x($profile,'marital')  == 1) ? t('Status:')   : False);
	$homepage = ((x($profile,'homepage') == 1) ? t('Homepage:') : False);
	$profile['online']   = (($profile['online_status'] === 'online') ? t('Online Now') : False);
logger('online: ' . $profile['online']);

	if(! perm_is_allowed($profile['uid'],((is_array($observer)) ? $observer['xchan_hash'] : ''),'view_profile')) {
		$block = true;
	}

	if(($profile['hidewall'] || $block) && (! local_user()) && (! remote_user())) {
		$location = $pdesc = $gender = $marital = $homepage = $online = False;
	}

	$firstname = ((strpos($profile['name'],' '))
		? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']);
	$lastname = (($firstname === $profile['name']) ? '' : trim(substr($profile['name'],strlen($firstname))));

	if(is_array($observer) 
		&& perm_is_allowed($profile['uid'],$observer['xchan_hash'],'view_contacts')) {
		$contact_block = contact_block();
	}

	$channel_menu = false;
	$menu = get_pconfig($profile['uid'],'system','channel_menu');
	if($menu) {
		require_once('include/menu.php');
		$m = menu_fetch($menu,$profile['uid'],$observer['xchan_hash']);
		if($m)
			$channel_menu = menu_render($m);
	}
	$menublock = get_pconfig($profile['uid'],'system','channel_menublock');
	if ($menublock && (! $block)) {
		require_once('include/comanche.php');
		$channel_menu .= comanche_block($menublock);
	}

	$tpl = get_markup_template('profile_vcard.tpl');

	$o .= replace_macros($tpl, array(
		'$profile'       => $profile,
		'$connect'       => $connect,
		'$connect_url'   => $connect_url,
		'$location'      => $location,
		'$gender'        => $gender,
		'$pdesc'         => $pdesc,
		'$marital'       => $marital,
		'$homepage'      => $homepage,
		'$chanmenu'      => $channel_menu,
		'$contact_block' => $contact_block,
	));

	$arr = array('profile' => &$profile, 'entry' => &$o);

	call_hooks('profile_sidebar', $arr);

	return $o;
}


// FIXME or remove


	function get_birthdays() {

		$a = get_app();
		$o = '';

		if(! local_user())
			return $o;

		$bd_format = t('g A l F d') ; // 8 AM Friday January 18
		$bd_short = t('F d');

		$r = q("SELECT `event`.*, `event`.`id` AS `eid`, `contact`.* FROM `event`
				LEFT JOIN `contact` ON `contact`.`id` = `event`.`cid`
				WHERE `event`.`uid` = %d AND `type` = 'birthday' AND `start` < '%s' AND `finish` > '%s'
				ORDER BY `start` ASC ",
				intval(local_user()),
				dbesc(datetime_convert('UTC','UTC','now + 6 days')),
				dbesc(datetime_convert('UTC','UTC','now'))
		);

		if($r && count($r)) {
			$total = 0;
			$now = strtotime('now');
			$cids = array();

			$istoday = false;
			foreach($r as $rr) {
				if(strlen($rr['name']))
					$total ++;
				if((strtotime($rr['start'] . ' +00:00') < $now) && (strtotime($rr['finish'] . ' +00:00') > $now))
					$istoday = true;
			}
			$classtoday = $istoday ? ' birthday-today ' : '';
			if($total) {
				foreach($r as &$rr) {
					if(! strlen($rr['name']))
						continue;

					// avoid duplicates

					if(in_array($rr['cid'],$cids))
						continue;
					$cids[] = $rr['cid'];

					$today = (((strtotime($rr['start'] . ' +00:00') < $now) && (strtotime($rr['finish'] . ' +00:00') > $now)) ? true : false);
					$sparkle = '';
					$url = $rr['url'];
					if($rr['network'] === NETWORK_DFRN) {
						$sparkle = " sparkle";
						$url = $a->get_baseurl() . '/redir/'  . $rr['cid'];
					}
	
					$rr['link'] = $url;
					$rr['title'] = $rr['name'];
					$rr['date'] = day_translate(datetime_convert('UTC', $a->timezone, $rr['start'], $rr['adjust'] ? $bd_format : $bd_short)) . (($today) ?  ' ' . t('[today]') : '');
					$rr['startime'] = Null;
					$rr['today'] = $today;
	
				}
			}
		}
		$tpl = get_markup_template("birthdays_reminder.tpl");
		return replace_macros($tpl, array(
			'$baseurl' => $a->get_baseurl(),
			'$classtoday' => $classtoday,
			'$count' => $total,
			'$event_reminders' => t('Birthday Reminders'),
			'$event_title' => t('Birthdays this week:'),
			'$events' => $r,
			'$lbr' => '{',  // raw brackets mess up if/endif macro processing
			'$rbr' => '}'

		));
	}


// FIXME


	function get_events() {

		require_once('include/bbcode.php');

		$a = get_app();

		if(! local_user())
			return $o;

		$bd_format = t('g A l F d') ; // 8 AM Friday January 18
		$bd_short = t('F d');

		$r = q("SELECT `event`.* FROM `event`
				WHERE `event`.`uid` = %d AND `type` != 'birthday' AND `start` < '%s' AND `start` > '%s'
				ORDER BY `start` ASC ",
				intval(local_user()),
				dbesc(datetime_convert('UTC','UTC','now + 6 days')),
				dbesc(datetime_convert('UTC','UTC','now - 1 days'))
		);

		if($r && count($r)) {
			$now = strtotime('now');
			$istoday = false;
			foreach($r as $rr) {
				if(strlen($rr['name']))
					$total ++;

				$strt = datetime_convert('UTC',$rr['convert'] ? $a->timezone : 'UTC',$rr['start'],'Y-m-d');
				if($strt === datetime_convert('UTC',$a->timezone,'now','Y-m-d'))
					$istoday = true;
			}
			$classtoday = (($istoday) ? 'event-today' : '');


			foreach($r as &$rr) {
				if($rr['adjust'])
					$md = datetime_convert('UTC',$a->timezone,$rr['start'],'Y/m');
				else
					$md = datetime_convert('UTC','UTC',$rr['start'],'Y/m');
				$md .= "/#link-".$rr['id'];

				$title = substr(strip_tags(bbcode($rr['desc'])),0,32) . '... ';
				if(! $title)
					$title = t('[No description]');

				$strt = datetime_convert('UTC',$rr['convert'] ? $a->timezone : 'UTC',$rr['start']);
				$today = ((substr($strt,0,10) === datetime_convert('UTC',$a->timezone,'now','Y-m-d')) ? true : false);
				
				$rr['link'] = $md;
				$rr['title'] = $title;
				$rr['date'] = day_translate(datetime_convert('UTC', $rr['adjust'] ? $a->timezone : 'UTC', $rr['start'], $bd_format)) . (($today) ?  ' ' . t('[today]') : '');
				$rr['startime'] = $strt;
				$rr['today'] = $today;
			}
		}

		$tpl = get_markup_template("events_reminder.tpl");
		return replace_macros($tpl, array(
			'$baseurl' => $a->get_baseurl(),
			'$classtoday' => $classtoday,
			'$count' => count($r),
			'$event_reminders' => t('Event Reminders'),
			'$event_title' => t('Events this week:'),
			'$events' => $r,
		));
	}


function advanced_profile(&$a) {

	if(! perm_is_allowed($a->profile['profile_uid'],get_observer_hash(),'view_profile'))
		return '';

	$o = '';

	$o .= '<h2>' . t('Profile') . '</h2>';

	if($a->profile['name']) {

		$tpl = get_markup_template('profile_advanced.tpl');
		
		$profile = array();
		
		$profile['fullname'] = array( t('Full Name:'), $a->profile['name'] ) ;
		
		if($a->profile['gender']) $profile['gender'] = array( t('Gender:'),  $a->profile['gender'] );
		

		if(($a->profile['dob']) && ($a->profile['dob'] != '0000-00-00')) {
		
			$year_bd_format = t('j F, Y');
			$short_bd_format = t('j F');

		
			$val = ((intval($a->profile['dob'])) 
				? day_translate(datetime_convert('UTC','UTC',$a->profile['dob'] . ' 00:00 +00:00',$year_bd_format))
				: day_translate(datetime_convert('UTC','UTC','2001-' . substr($a->profile['dob'],5) . ' 00:00 +00:00',$short_bd_format)));

			$profile['birthday'] = array( t('Birthday:'), $val);

		}

		if($age = age($a->profile['dob'],$a->profile['timezone'],''))  $profile['age'] = array( t('Age:'), $age );
			

		if($a->profile['marital']) $profile['marital'] = array( t('Status:'), $a->profile['marital']);


		if($a->profile['with']) $profile['marital']['with'] = $a->profile['with'];

		if(strlen($a->profile['howlong']) && $a->profile['howlong'] !== '0000-00-00 00:00:00') {
				$profile['howlong'] = relative_date($a->profile['howlong'], t('for %1$d %2$s'));
		}

		if($a->profile['sexual']) $profile['sexual'] = array( t('Sexual Preference:'), $a->profile['sexual'] );

		if($a->profile['homepage']) $profile['homepage'] = array( t('Homepage:'), linkify($a->profile['homepage']) );

		if($a->profile['hometown']) $profile['hometown'] = array( t('Hometown:'), linkify($a->profile['hometown']) );

		if($a->profile['keywords']) $profile['keywords'] = array( t('Tags:'), $a->profile['keywords']);

		if($a->profile['politic']) $profile['politic'] = array( t('Political Views:'), $a->profile['politic']);

		if($a->profile['religion']) $profile['religion'] = array( t('Religion:'), $a->profile['religion']);

		if($txt = prepare_text($a->profile['about'])) $profile['about'] = array( t('About:'), $txt );

		if($txt = prepare_text($a->profile['interest'])) $profile['interest'] = array( t('Hobbies/Interests:'), $txt);

		if($txt = prepare_text($a->profile['likes'])) $profile['likes'] = array( t('Likes:'), $txt);

		if($txt = prepare_text($a->profile['dislikes'])) $profile['dislikes'] = array( t('Dislikes:'), $txt);


		if($txt = prepare_text($a->profile['contact'])) $profile['contact'] = array( t('Contact information and Social Networks:'), $txt);

		if($txt = prepare_text($a->profile['channels'])) $profile['channels'] = array( t('My other channels:'), $txt);

		if($txt = prepare_text($a->profile['music'])) $profile['music'] = array( t('Musical interests:'), $txt);
		
		if($txt = prepare_text($a->profile['book'])) $profile['book'] = array( t('Books, literature:'), $txt);

		if($txt = prepare_text($a->profile['tv'])) $profile['tv'] = array( t('Television:'), $txt);

		if($txt = prepare_text($a->profile['film'])) $profile['film'] = array( t('Film/dance/culture/entertainment:'), $txt);

		if($txt = prepare_text($a->profile['romance'])) $profile['romance'] = array( t('Love/Romance:'), $txt);
		
		if($txt = prepare_text($a->profile['work'])) $profile['work'] = array( t('Work/employment:'), $txt);

		if($txt = prepare_text($a->profile['education'])) $profile['education'] = array( t('School/education:'), $txt );


		$things = get_things($a->profile['profile_guid'],$a->profile['profile_uid']);

		logger('mod_profile: things: ' . print_r($things,true), LOGGER_DATA); 

        return replace_macros($tpl, array(
            '$title' => t('Profile'),
            '$profile' => $profile,
			'$things' => $things
        ));
    }

	return '';
}




function get_my_url() {
	if(x($_SESSION,'zrl_override'))
		return $_SESSION['zrl_override'];
	if(x($_SESSION,'my_url'))
		return $_SESSION['my_url'];
	return false;
}

function get_my_address() {
	if(x($_SESSION,'zid_override'))
		return $_SESSION['zid_override'];
	if(x($_SESSION,'my_address'))
		return $_SESSION['my_address'];
	return false;
}

/**
 * @function zid_init(&$a)
 *   If somebody arrives at our site using a zid, add their xchan to our DB if we don't have it already.
 *   And if they aren't already authenticated here, attempt reverse magic auth.
 *
 * @hooks 'zid_init'
 *      string 'zid' - their zid
 *      string 'url' - the destination url
 *
 */

function zid_init(&$a) {
	$tmp_str = get_my_address();
	if(validate_email($tmp_str)) {
		proc_run('php','include/gprobe.php',bin2hex($tmp_str));
		$arr = array('zid' => $tmp_str, 'url' => $a->cmd);
		call_hooks('zid_init',$arr);		
		if(! local_user()) {
			$r = q("select * from hubloc where hubloc_addr = '%s' order by hubloc_connected desc limit 1",
				dbesc($tmp_str)
			);
			if($r && remote_user() && remote_user() === $r[0]['hubloc_hash'])
				return;
			logger('zid_init: not authenticated. Invoking reverse magic-auth for ' . $tmp_str);
			// try to avoid recursion - but send them home to do a proper magic auth
			$query = $a->query_string;
			$query = str_replace(array('?zid=','&zid='),array('?rzid=','&rzid='),$query);
			$dest = '/' . urlencode($query);
			if($r && ($r[0]['hubloc_url'] != z_root()) && (! strstr($dest,'/magic')) && (! strstr($dest,'/rmagic'))) {
				goaway($r[0]['hubloc_url'] . '/magic' . '?f=&rev=1&dest=' . z_root() . $dest);
			}
			else
				logger('zid_init: no hubloc found.');
		}
	}
}

/**
 * @function zid($s,$address = '')
 *   Adds a zid parameter to a url
 * @param string $s
 *   The url to accept the zid
 * @param boolean $address
 *   $address to use instead of session environment
 * @return string
 *
 * @hooks 'zid'
 *      string url - url to accept zid
 *      string zid - urlencoded zid
 *      string result - the return string we calculated, change it if you want to return something else
 */


function zid($s,$address = '') {
	if(! strlen($s) || strpos($s,'zid='))
		return $s;
	$has_params = ((strpos($s,'?')) ? true : false);
	$num_slashes = substr_count($s,'/');
	if(! $has_params)
		$has_params = ((strpos($s,'&')) ? true : false);
	$achar = strpos($s,'?') ? '&' : '?';

	$mine = get_my_url();
	$myaddr = (($address) ? $address : get_my_address());

	// FIXME checking against our own channel url is no longer reliable. We may have a lot
	// of urls attached to out channel. Should probably match against our site, since we
	// will not need to remote authenticate on our own site anyway.

	if($mine && $myaddr && (! link_compare($mine,$s)))
		$zurl = $s . (($num_slashes >= 3) ? '' : '/') . $achar . 'zid=' . urlencode($myaddr);
	else
		$zurl = $s;

	$arr = array('url' => $s, 'zid' => urlencode($myaddr), 'result' => $zurl);
	call_hooks('zid', $arr);
	return $arr['result'];
}

// Used from within PCSS themes to set theme parameters. If there's a
// puid request variable, that is the "page owner" and normally their theme
// settings take precedence; unless a local user sets the "always_my_theme" 
// system pconfig, which means they don't want to see anybody else's theme 
// settings except their own while on this site.

function get_theme_uid() {
	$uid = (($_REQUEST['puid']) ? intval($_REQUEST['puid']) : 0);
	if(local_user()) {
		if((get_pconfig(local_user(),'system','always_my_theme')) || (! $uid))
			return local_user();
		if(! $uid)
			return local_user();
	}
	if(! $uid) {
		$x = get_sys_channel();
		if($x)
			return $x['channel_id'];
	}	
	return $uid;
}

/**
* @function get_default_profile_photo($size = 175)
* 	Retrieves the path of the default_profile_photo for this system
* 	with the specified size.
* @param int $size
* 	one of (175, 80, 48)
* @returns string
*
*/

function get_default_profile_photo($size = 175) {
		$scheme = get_config('system','default_profile_photo');
		if(! $scheme)
			$scheme = 'rainbow_man';
		return 'images/default_profile_photos/' . $scheme . '/' . $size . '.jpg';
}


/**
 *
 * @function is_foreigner($s)
 *    Test whether a given identity is NOT a member of the Red Matrix
 * @param string $s;
 *    xchan_hash of the identity in question
 *
 * @returns boolean true or false
 *
 */

function is_foreigner($s) {
	return((strpbrk($s,'.:@')) ? true : false);
}


/**
 *
 * @function is_member($s)
 *    Test whether a given identity is a member of the Red Matrix
 * @param string $s;
 *    xchan_hash of the identity in question
 *
 * @returns boolean true or false
 *
 */

function is_member($s) {
	return((is_foreigner($s)) ? false : true);
}

function get_online_status($nick) {

	$ret = array('result' => false);

	if(get_config('system','block_public') && ! local_user() && ! remote_user())
		return $ret;

	$r = q("select channel_id, channel_hash from channel where channel_address = '%s' limit 1",
		dbesc(argv(1))
	);
	if($r) {
		$hide = get_pconfig($r[0]['channel_id'],'system','hide_online_status');
		if($hide)
			return $ret;
		$x = q("select cp_status from chatpresence where cp_xchan = '%s' and cp_room = 0 limit 1",
			dbesc($r[0]['channel_hash'])
		);
		if($x)
			$ret['result'] = $x[0]['cp_status'];
	}

	return $ret;
}


function remote_online_status($webbie) {

	$result = false;
	$r = q("select * from hubloc where hubloc_addr = '%s' limit 1",
		dbesc($webbie)
	);
	if(! $r)
		return $result;

	$url = $r[0]['hubloc_url'] . '/online/' . substr($webbie,0,strpos($webbie,'@'));

	$x = z_fetch_url($url);
	if($x['success']) {
		$j = json_decode($x['body'],true);
		if($j)
			$result = (($j['result']) ? $j['result'] : false);
	}
	return $result;

}


function get_channel_by_nick($nick) {
	$r = q("select * from channel where channel_address = '%s' limit 1",
		dbesc($nick)
	);
	return(($r) ? $r[0] : false);

}