aboutsummaryrefslogtreecommitdiffstats
path: root/mod/item.php
blob: 4442488467a52ba42d291e901fee8c503ebc12c9 (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
<?php

/**
 *
 * This is the POST destination for most all locally posted
 * text stuff. This function handles status, wall-to-wall status, 
 * local comments, and remote coments that are posted on this site 
 * (as opposed to being delivered in a feed).
 * Also processed here are posts and comments coming through the 
 * statusnet/twitter API. 
 * All of these become an "item" which is our basic unit of 
 * information.
 * Posts that originate externally or do not fall into the above 
 * posting categories go through item_store() instead of this function. 
 *
 */  

require_once('include/crypto.php');
require_once('include/enotify.php');
require_once('include/items.php');
require_once('include/attach.php');

function item_post(&$a) {


	// This will change. Figure out who the observer is and whether or not
	// they have permission to post here. Else ignore the post.

	if((! local_user()) && (! remote_user()) && (! x($_REQUEST,'commenter')))
		return;

	require_once('include/security.php');

	$uid = local_user();

	if(x($_REQUEST,'dropitems')) {
		require_once('include/items.php');
		$arr_drop = explode(',',$_REQUEST['dropitems']);
		drop_items($arr_drop);
		$json = array('success' => 1);
		echo json_encode($json);
		killme();
	}

	call_hooks('post_local_start', $_REQUEST);

//	logger('postvars ' . print_r($_REQUEST,true), LOGGER_DATA);

	$api_source = ((x($_REQUEST,'api_source') && $_REQUEST['api_source']) ? true : false);

	// 'origin' (if non-zero) indicates that this network is where the message originated,
	// for the purpose of relaying comments to other conversation members. 
	// If using the API from a device (leaf node) you must set origin to 1 (default) or leave unset.
	// If the API is used from another network with its own distribution
	// and deliveries, you may wish to set origin to 0 or false and allow the other 
	// network to relay comments.

	// If you are unsure, it is prudent (and important) to leave it unset.   

	$origin = (($api_source && array_key_exists('origin',$_REQUEST)) ? intval($_REQUEST['origin']) : 1);

	// To represent message-ids on other networks - this will create an item_id record

	$namespace = (($api_source && array_key_exists('namespace',$_REQUEST)) ? strip_tags($_REQUEST['namespace']) : '');
	$remote_id = (($api_source && array_key_exists('remote_id',$_REQUEST)) ? strip_tags($_REQUEST['remote_id']) : '');

	$owner_hash = null;

	$message_id  = ((x($_REQUEST,'message_id') && $api_source)  ? strip_tags($_REQUEST['message_id'])       : '');
	$created     = ((x($_REQUEST,'created'))     ? datetime_convert('UTC','UTC',$_REQUEST['created']) : datetime_convert());
	$profile_uid = ((x($_REQUEST,'profile_uid')) ? intval($_REQUEST['profile_uid'])    : 0);
	$post_id     = ((x($_REQUEST,'post_id'))     ? intval($_REQUEST['post_id'])        : 0);
	$app         = ((x($_REQUEST,'source'))      ? strip_tags($_REQUEST['source'])     : '');
	$return_path = ((x($_REQUEST,'return'))      ? $_REQUEST['return']                 : '');
	$preview     = ((x($_REQUEST,'preview'))     ? intval($_REQUEST['preview'])        : 0);
	$categories  = ((x($_REQUEST,'category'))    ? escape_tags($_REQUEST['category'])  : '');
	$webpage     = ((x($_REQUEST,'webpage'))     ? intval($_REQUEST['webpage'])        : 0);
	$pagetitle   = ((x($_REQUEST,'pagetitle'))   ? escape_tags($_REQUEST['pagetitle']) : '');
	$layout_mid  = ((x($_REQUEST,'layout_mid'))  ? escape_tags($_REQUEST['layout_mid']): '');
	$plink       = ((x($_REQUEST,'permalink'))   ? escape_tags($_REQUEST['permalink']) : '');

	/*
	Check service class limits
	*/
	if (local_user() && !(x($_REQUEST,'parent')) && !(x($_REQUEST,'post_id'))) {
	$ret=item_check_service_class(local_user(),x($_REQUEST,'webpage'));
	if (!$ret['success']) { 
          notice( t($ret['message']) . EOL) ;
      	  if(x($_REQUEST,'return')) 
				goaway($a->get_baseurl() . "/" . $return_path );
			killme();
	}
	}
	if($pagetitle) {
		require_once('library/urlify/URLify.php');
		$pagetitle = strtolower(URLify::transliterate($pagetitle));
	}


	$item_flags = $item_restrict = 0;

	/**
	 * Is this a reply to something?
	 */

	$parent = ((x($_REQUEST,'parent')) ? intval($_REQUEST['parent']) : 0);
	$parent_mid = ((x($_REQUEST,'parent_mid')) ? trim($_REQUEST['parent_mid']) : '');

	$parent_item = null;
	$parent_contact = null;
	$thr_parent = '';
	$parid = 0;
	$r = false;

	if($parent || $parent_mid) {

		if(! x($_REQUEST,'type'))
			$_REQUEST['type'] = 'net-comment';

		if($parent) {
			$r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
				intval($parent)
			);
		}
		elseif($parent_mid && local_user()) {
			// This is coming from an API source, and we are logged in
			$r = q("SELECT * FROM `item` WHERE `mid` = '%s' AND `uid` = %d LIMIT 1",
				dbesc($parent_mid),
				intval(local_user())
			);
		}
		// if this isn't the real parent of the conversation, find it
		if($r !== false && count($r)) {
			$parid = $r[0]['parent'];
			$parent_mid = $r[0]['mid'];
			if($r[0]['id'] != $r[0]['parent']) {
				$r = q("SELECT * FROM `item` WHERE `id` = `parent` AND `parent` = %d LIMIT 1",
					intval($parid)
				);
			}
		}

		if(($r === false) || (! count($r))) {
			notice( t('Unable to locate original post.') . EOL);
			if(x($_REQUEST,'return')) 
				goaway($a->get_baseurl() . "/" . $return_path );
			killme();
		}

		// can_comment_on_post() needs info from the following xchan_query 
		xchan_query($r);
		$parent_item = $r[0];
		$parent = $r[0]['id'];

		// multi-level threading - preserve the info but re-parent to our single level threading
		//if(($parid) && ($parid != $parent))
			$thr_parent = $parent_mid;

//		if($parent_item['contact-id'] && $uid) {
//			$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
//				intval($parent_item['contact-id']),
//				intval($uid)
//			);
//			if(count($r))
//				$parent_contact = $r[0];
//		}

	}

	$observer = $a->get_observer();

	if($parent) {
		logger('mod_item: item_post parent=' . $parent);
		$can_comment = false;
		if((array_key_exists('owner',$parent_item)) && ($parent_item['owner']['abook_flags'] & ABOOK_FLAG_SELF))
			$can_comment = perm_is_allowed($profile_uid,$observer['xchan_hash'],'post_comments');
		else
			$can_comment = can_comment_on_post($observer['xchan_hash'],$parent_item);

		if(! $can_comment) {
			notice( t('Permission denied.') . EOL) ;
			if(x($_REQUEST,'return')) 
				goaway($a->get_baseurl() . "/" . $return_path );
			killme();
		}
	}
	else {
		if(! perm_is_allowed($profile_uid,$observer['xchan_hash'],'post_wall')) {
			notice( t('Permission denied.') . EOL) ;
			if(x($_REQUEST,'return')) 
				goaway($a->get_baseurl() . "/" . $return_path );
			killme();
		}
	}


	// is this an edited post?

	$orig_post = null;

	if($namespace && $remote_id) {
		// It wasn't an internally generated post - see if we've got an item matching this remote service id
		$i = q("select iid from item_id where service = '%s' and sid = '%s' limit 1",
			dbesc($namespace),
			dbesc($remote_id) 
		);
		if($i)
			$post_id = $i[0]['iid'];	
	}

	if($post_id) {
		$i = q("SELECT * FROM `item` WHERE `uid` = %d AND `id` = %d LIMIT 1",
			intval($profile_uid),
			intval($post_id)
		);
		if(! count($i))
			killme();
		$orig_post = $i[0];
	}

	$channel = null;

	if(local_user() && local_user() == $profile_uid) {
		$channel = $a->get_channel();
	}
	else {
		$r = q("SELECT channel.*, account.* FROM channel left join account on channel.channel_account_id = account.account_id 
			where channel.channel_id = %d LIMIT 1",
			intval($profile_uid)
		);
		if(count($r))
			$channel = $r[0];
	}

	if(! $channel) {
		logger("mod_item: no channel.");
		if(x($_REQUEST,'return')) 
			goaway($a->get_baseurl() . "/" . $return_path );
		killme();
	}

	$owner_xchan = null;

	$r = q("select * from xchan where xchan_hash = '%s' limit 1",
		dbesc($channel['channel_hash'])
	);
	if($r && count($r)) {
		$owner_xchan = $r[0];
	}
	else {
		logger("mod_item: no owner.");
		if(x($_REQUEST,'return')) 
			goaway($a->get_baseurl() . "/" . $return_path );
		killme();
	}

	if($observer) {
		logger('mod_item: post accepted from ' . $observer['xchan_name'] . ' for ' . $owner_xchan['xchan_name'], LOGGER_DEBUG);
	}
		

	if($orig_post) {
		$str_group_allow   = $orig_post['allow_gid'];
		$str_contact_allow = $orig_post['allow_cid'];
		$str_group_deny    = $orig_post['deny_gid'];
		$str_contact_deny  = $orig_post['deny_cid'];
		$location          = $orig_post['location'];
		$coord             = $orig_post['coord'];
		$verb              = $orig_post['verb'];
		$app               = $orig_post['app'];
		$title             = escape_tags(trim($_REQUEST['title']));
		$body              = $_REQUEST['body'];
		$private           = $orig_post['item_private'];
		$item_flags        = $orig_post['item_flags'];
		$item_restrict     = $orig_post['item_restrict'];
		$postopts          = $orig_post['postopts'];
		$created           = $orig_post['created'];
	}
	else {

		// if coming from the API and no privacy settings are set, 
		// use the user default permissions - as they won't have
		// been supplied via a form.

		if(($api_source) 
			&& (! array_key_exists('contact_allow',$_REQUEST))
			&& (! array_key_exists('group_allow',$_REQUEST))
			&& (! array_key_exists('contact_deny',$_REQUEST))
			&& (! array_key_exists('group_deny',$_REQUEST))) {
			$str_group_allow   = $channel['channel_allow_gid'];
			$str_contact_allow = $channel['channel_allow_cid'];
			$str_group_deny    = $channel['channel_deny_gid'];
			$str_contact_deny  = $channel['channel_deny_cid'];
		}
		else {

			// use the posted permissions

			$str_group_allow   = perms2str($_REQUEST['group_allow']);
			$str_contact_allow = perms2str($_REQUEST['contact_allow']);
			$str_group_deny    = perms2str($_REQUEST['group_deny']);
			$str_contact_deny  = perms2str($_REQUEST['contact_deny']);
		}

		$location          = notags(trim($_REQUEST['location']));
		$coord             = notags(trim($_REQUEST['coord']));
		$verb              = notags(trim($_REQUEST['verb']));
		$title             = escape_tags(trim($_REQUEST['title']));
		$body              = $_REQUEST['body'];
		$postopts          = '';

		$private = ( 
				(  strlen($str_group_allow) 
				|| strlen($str_contact_allow) 
				|| strlen($str_group_deny) 
				|| strlen($str_contact_deny)
		) ? 1 : 0);

		// If this is a comment, set the permissions from the parent.

		if($parent_item) {
			$private = 0;

			if(($parent_item['item_private']) 
				|| strlen($parent_item['allow_cid']) 
				|| strlen($parent_item['allow_gid']) 
				|| strlen($parent_item['deny_cid']) 
				|| strlen($parent_item['deny_gid'])) {
				$private = (($parent_item['item_private']) ? $parent_item['item_private'] : 1);
			}

			$str_contact_allow = $parent_item['allow_cid'];
			$str_group_allow   = $parent_item['allow_gid'];
			$str_contact_deny  = $parent_item['deny_cid'];
			$str_group_deny    = $parent_item['deny_gid'];
			$owner_hash        = $parent_item['owner_xchan'];
		}
	
		if(! strlen($body)) {
			if($preview)
				killme();
			info( t('Empty post discarded.') . EOL );
			if(x($_REQUEST,'return')) 
				goaway($a->get_baseurl() . "/" . $return_path );
			killme();
		}
	}

	$expires = '0000-00-00 00:00:00';

	if(feature_enabled($profile_uid,'content_expire')) {
		if(x($_REQUEST,'expire')) {
			$expires = datetime_convert(date_default_timezone_get(),'UTC', $_REQUEST['expire']);
			if($expires <= datetime_convert())
				$expires = '0000-00-00 00:00:00';
		}
	}



	$post_type = notags(trim($_REQUEST['type']));

	$mimetype = notags(trim($_REQUEST['mimetype']));
	if(! $mimetype)
		$mimetype = 'text/bbcode';

	// Verify ability to use html or php!!!

	if($preview) {
		$body = z_input_filter($profile_uid,$body,$mimetype);
	}

	$execflag = false;

	if($mimetype === 'application/x-php') {
		$z = q("select account_id, account_roles from account left join channel on channel_account_id = account_id where channel_id = %d limit 1",
			intval($profile_uid)
		);
		if($z && ($z[0]['account_roles'] & ACCOUNT_ROLE_ALLOWCODE)) {
			if(local_user() && (get_account_id() == $z[0]['account_id'])) {
				$execflag = true;
			}
			else {
				notice( t('Executable content type not permitted to this channel.') . EOL);
				if(x($_REQUEST,'return')) 
					goaway($a->get_baseurl() . "/" . $return_path );
				killme();
			}
		}
	}

	if($mimetype === 'text/bbcode') {

		// BBCODE alert: the following functions assume bbcode input
		// and will require alternatives for alternative content-types (text/html, text/markdown, text/plain, etc.)
		// we may need virtual or template classes to implement the possible alternatives

		// Work around doubled linefeeds in Tinymce 3.5b2
		// First figure out if it's a status post that would've been
		// created using tinymce. Otherwise leave it alone. 

		$plaintext = ((feature_enabled($profile_uid,'richtext')) ? false : true);
		if((! $parent) && (! $api_source) && (! $plaintext)) {
			$body = fix_mce_lf($body);
		}

		// If we're sending a private top-level message with a single @-taggable channel as a recipient, @-tag it, if our pconfig is set.


		if((! $parent) && (get_pconfig($profile_uid,'system','tagifonlyrecip')) && (substr_count($str_contact_allow,'<') == 1) && ($str_group_allow == '') && ($str_contact_deny == '') && ($str_group_deny == '')) {
			$x = q("select abook_id, abook_their_perms from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
				dbesc(str_replace(array('<','>'),array('',''),$str_contact_allow)),
				intval($profile_uid)
			);
			if($x && ($x[0]['abook_their_perms'] & PERMS_W_TAGWALL))
				$body .= "\n\n@group+" . $x[0]['abook_id'] . "\n";
		}

		/**
		 * fix naked links by passing through a callback to see if this is a red site
		 * (already known to us) which will get a zrl, otherwise link with url
		 */

		$body = preg_replace_callback("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\@\_\~\#\%\$\!\+\,]+)/ism", 'red_zrl_callback', $body);

		/**
		 *
		 * When a photo was uploaded into the message using the (profile wall) ajax 
		 * uploader, The permissions are initially set to disallow anybody but the
		 * owner from seeing it. This is because the permissions may not yet have been
		 * set for the post. If it's private, the photo permissions should be set
		 * appropriately. But we didn't know the final permissions on the post until
		 * now. So now we'll look for links of uploaded photos and attachments that are in the
		 * post and set them to the same permissions as the post itself.
		 *
		 * If the post was end-to-end encrypted we can't find images and attachments in the body,
		 * use our media_str input instead which only contains these elements - but only do this
		 * when encrypted content exists because the photo/attachment may have been removed from 
		 * the post and we should keep it private. If it's encrypted we have no way of knowing
		 * so we'll set the permissions regardless and realise that the media may not be 
		 * referenced in the post. 
		 */

		if(! $preview) {
			fix_attached_photo_permissions($profile_uid,$owner_xchan['xchan_hash'],((strpos($body,'[/crypt]')) ? $_POST['media_str'] : $body),$str_contact_allow,$str_group_allow,$str_contact_deny,$str_group_deny);

			fix_attached_file_permissions($channel,$observer['xchan_hash'],((strpos($body,'[/crypt]')) ? $_POST['media_str'] : $body),$str_contact_allow,$str_group_allow,$str_contact_deny,$str_group_deny);

		}



		$body = bb_translate_video($body);

		/**
		 * Fold multi-line [code] sequences
		 */

		$body = preg_replace('/\[\/code\]\s*\[code\]/ism',"\n",$body); 

		$body = scale_external_images($body,false);

		/**
		 * Look for any tags and linkify them
		 */

		$str_tags = '';
		$inform   = '';
		$post_tags = array();

		$tags = get_tags($body);

		$tagged = array();

		$private_forum = false;

		if(count($tags)) {
			foreach($tags as $tag) {

				// If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
				// Robert Johnson should be first in the $tags array

				$fullnametagged = false;
				for($x = 0; $x < count($tagged); $x ++) {
					if(stristr($tagged[$x],$tag . ' ')) {
						$fullnametagged = true;
						break;
					}
				}
				if($fullnametagged)
					continue;

				$success = handle_tag($a, $body, $access_tag, $str_tags, (local_user()) ? local_user() : $profile_uid , $tag); 
				logger('handle_tag: ' . print_r($success,tue), LOGGER_DEBUG);
				if(($access_tag) && (! $parent_item)) {
					logger('access_tag: ' . $tag . ' ' . print_r($access_tag,true), LOGGER_DEBUG);
					if(strpos($access_tag,'cid:') === 0) {
						$str_contact_allow .= '<' . substr($access_tag,4) . '>';
						$access_tag = '';	
					}
					elseif(strpos($access_tag,'gid:') === 0) {
						$str_group_allow .= '<' . substr($access_tag,4) . '>';
						$access_tag = '';	
					}
				}

				if($success['replaced']) {
					$tagged[] = $tag;
					$post_tags[] = array(
						'uid'   => $profile_uid, 
						'type'  => $success['termtype'],
						'otype' => TERM_OBJ_POST,
						'term'  => $success['term'],
						'url'   => $success['url']
					); 				
				}
				if(is_array($success['contact']) && intval($success['contact']['prv'])) {
					$private_forum = true;
					$private_id = $success['contact']['id'];
				}
			}
		}


//	logger('post_tags: ' . print_r($post_tags,true));

		if(($private_forum) && (! $parent) && (! $private)) {
			// we tagged a private forum in a top level post and the message was public.
			// Restrict it.
			$private = 1;
			$str_contact_allow = '<' . $private_id . '>'; 
		}

		$attachments = '';
		$match = false;

		if(preg_match_all('/(\[attachment\](.*?)\[\/attachment\])/',$body,$match)) {
			$attachments = array();
			foreach($match[2] as $mtch) {
				$hash = substr($mtch,0,strpos($mtch,','));
				$rev = intval(substr($mtch,strpos($mtch,',')));
				$r = attach_by_hash_nodata($hash,$rev);
				if($r['success']) {
					$attachments[] = array(
						'href'     => $a->get_baseurl() . '/attach/' . $r['data']['hash'],
						'length'   =>  $r['data']['filesize'],
						'type'     => $r['data']['filetype'],
						'title'    => urlencode($r['data']['filename']),
						'revision' => $r['data']['revision']
					);
				}
				$body = str_replace($match[1],'',$body);
			}
		}
	}

// BBCODE end alert


	if(strlen($categories)) {
		$cats = explode(',',$categories);
		foreach($cats as $cat) {
			$post_tags[] = array(
				'uid'   => $profile_uid, 
				'type'  => TERM_CATEGORY,
				'otype' => TERM_OBJ_POST,
				'term'  => trim($cat),
				'url'   => $owner_xchan['xchan_url'] . '?f=&cat=' . urlencode(trim($cat))
			); 				
		}
	}

	$item_flags |= ITEM_UNSEEN;
	$item_restrict |= ITEM_VISIBLE;
	
	if($post_type === 'wall' || $post_type === 'wall-comment')
		$item_flags = $item_flags | ITEM_WALL;

	if($origin)
		$item_flags = $item_flags | ITEM_ORIGIN;

	if($moderated)
		$item_restrict = $item_restrict | ITEM_MODERATED;

	if($webpage)
		$item_restrict = $item_restrict | $webpage;
		
		
	if(! strlen($verb))
		$verb = ACTIVITY_POST ;

	$notify_type = (($parent) ? 'comment-new' : 'wall-new' );

	$mid = (($message_id) ? $message_id : item_message_id());

	$parent_mid = $mid;
	if($parent_item)
		$parent_mid = $parent_item['mid'];

	// Fallback so that we alway have a thr_parent

	if(!$thr_parent)
		$thr_parent = $mid;

	$datarray = array();

	if(! $parent) {
		$datarray['parent_mid'] = $mid;
		$item_flags = $item_flags | ITEM_THREAD_TOP;
	}
	
	$datarray['aid']            = $channel['channel_account_id'];
	$datarray['uid']            = $profile_uid;

	$datarray['owner_xchan']    = (($owner_hash) ? $owner_hash : $owner_xchan['xchan_hash']);
	$datarray['author_xchan']   = $observer['xchan_hash'];
	$datarray['created']        = $created;
	$datarray['edited']         = datetime_convert();
	$datarray['expires']        = $expires;
	$datarray['commented']      = datetime_convert();
	$datarray['received']       = datetime_convert();
	$datarray['changed']        = datetime_convert();
	$datarray['mid']            = $mid;
	$datarray['parent_mid']     = $parent_mid;
	$datarray['mimetype']       = $mimetype;
	$datarray['title']          = $title;
	$datarray['body']           = $body;
	$datarray['app']            = $app;
	$datarray['location']       = $location;
	$datarray['coord']          = $coord;
	$datarray['verb']           = $verb;
	$datarray['allow_cid']      = $str_contact_allow;
	$datarray['allow_gid']      = $str_group_allow;
	$datarray['deny_cid']       = $str_contact_deny;
	$datarray['deny_gid']       = $str_group_deny;
	$datarray['item_private']   = $private;
	$datarray['attach']         = $attachments;
	$datarray['thr_parent']     = $thr_parent;
	$datarray['postopts']       = $postopts;
	$datarray['item_restrict']  = $item_restrict;
	$datarray['item_flags']     = $item_flags;
	$datarray['layout_mid']     = $layout_mid;
	$datarray['comment_policy'] = map_scope($channel['channel_w_comment']); 
	$datarray['term']           = $post_tags;
	$datarray['plink']          = $plink;

	// preview mode - prepare the body for display and send it via json

	if($preview) {
		require_once('include/conversation.php');

		$datarray['owner'] = $owner_xchan;
		$datarray['author'] = $observer;
		$datarray['attach'] = json_encode($datarray['attach']);
		$o = conversation($a,array($datarray),'search',false,'preview');
		logger('preview: ' . $o, LOGGER_DEBUG);
		echo json_encode(array('preview' => $o));
		killme();
	}
	if($orig_post)
		$datarray['edit'] = true;

	call_hooks('post_local',$datarray);

	if(x($datarray,'cancel')) {
		logger('mod_item: post cancelled by plugin.');
		if($return_path) {
			goaway($a->get_baseurl() . "/" . $return_path);
		}

		$json = array('cancel' => 1);
		if(x($_REQUEST,'jsreload') && strlen($_REQUEST['jsreload']))
			$json['reload'] = $a->get_baseurl() . '/' . $_REQUEST['jsreload'];

		echo json_encode($json);
		killme();
	}


	if(mb_strlen($datarray['title']) > 255)
		$datarray['title'] = mb_substr($datarray['title'],0,255);

	if(array_key_exists('item_private',$datarray) && $datarray['item_private']) {

		$datarray['body'] = z_input_filter($datarray['uid'],$datarray['body'],$datarray['mimetype']);

		if(local_user()) {
			if($channel['channel_hash'] === $datarray['author_xchan']) {
				$datarray['sig'] = base64url_encode(rsa_sign($datarray['body'],$channel['channel_prvkey']));
				$datarray['item_flags'] = $datarray['item_flags'] | ITEM_VERIFIED;
			}
		}

		logger('Encrypting local storage');
		$key = get_config('system','pubkey');
		$datarray['item_flags'] = $datarray['item_flags'] | ITEM_OBSCURED;
		if($datarray['title'])
			$datarray['title'] = json_encode(aes_encapsulate($datarray['title'],$key));
		if($datarray['body'])
			$datarray['body']  = json_encode(aes_encapsulate($datarray['body'],$key));
	}

	if($orig_post) {
		$datarray['id'] = $post_id;

		item_store_update($datarray,$execflag);

		proc_run('php', "include/notifier.php", 'edit_post', $post_id);
		if((x($_REQUEST,'return')) && strlen($return_path)) {
			logger('return: ' . $return_path);
			goaway($a->get_baseurl() . "/" . $return_path );
		}
		killme();
	}
	else
		$post_id = 0;


	$post = item_store($datarray,$execflag);


	$post_id = $post['item_id'];

	if($post_id) {
		logger('mod_item: saved item ' . $post_id);

		if($parent) {

			$r = q("UPDATE `item` SET `changed` = '%s' WHERE `parent` = %d ",
				dbesc(datetime_convert()),
				intval($parent)
			);

			// Inherit ACL's from the parent item.

			$r = q("UPDATE `item` SET `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s', `item_private` = %d
				WHERE `id` = %d LIMIT 1",
				dbesc($parent_item['allow_cid']),
				dbesc($parent_item['allow_gid']),
				dbesc($parent_item['deny_cid']),
				dbesc($parent_item['deny_gid']),
				intval($parent_item['item_private']),
				intval($post_id)
			);

			if($datarray['owner_xchan'] != $datarray['author_xchan']) {
				notification(array(
					'type'         => NOTIFY_COMMENT,
					'from_xchan'   => $datarray['author_xchan'],
					'to_xchan'     => $datarray['owner_xchan'],
					'item'         => $datarray,
					'link'		   => $a->get_baseurl() . '/display/' . $datarray['mid'],
					'verb'         => ACTIVITY_POST,
					'otype'        => 'item',
					'parent'       => $parent,
					'parent_mid'   => $parent_item['mid']
				));
			
			}

		}
		else {
			$parent = $post_id;

			if($datarray['owner_xchan'] != $datarray['author_xchan']) {
				notification(array(
					'type'         => NOTIFY_WALL,
					'from_xchan'   => $datarray['author_xchan'],
					'to_xchan'     => $datarray['owner_xchan'],
					'item'         => $datarray,
					'link'		   => $a->get_baseurl() . '/display/' . $datarray['mid'],
					'verb'         => ACTIVITY_POST,
					'otype'        => 'item'
				));
			}
		}

		// fallback so that parent always gets set to non-zero.

		if(! $parent)
			$parent = $post_id;

		$r = q("UPDATE `item` SET `parent` = %d, `parent_mid` = '%s', `changed` = '%s'
			WHERE `id` = %d LIMIT 1",
			intval($parent),
			dbesc(($parent == $post_id) ? $mid : $parent_item['mid']),
			dbesc(datetime_convert()),
			intval($post_id)
		);

		// photo comments turn the corresponding item visible to the profile wall
		// This way we don't see every picture in your new photo album posted to your wall at once.
		// They will show up as people comment on them.

// fixme set item visible as well

		if($parent_item['item_restrict'] & ITEM_HIDDEN) {
			$r = q("UPDATE `item` SET `item_restrict` = %d WHERE `id` = %d LIMIT 1",
				intval($parent_item['item_restrict'] - ITEM_HIDDEN),
				intval($parent_item['id'])
			);
		}
	}
	else {
		logger('mod_item: unable to retrieve post that was just stored.');
		notice( t('System error. Post not saved.') . EOL);
		goaway($a->get_baseurl() . "/" . $return_path );
		// NOTREACHED
	}

	$page_type = '';

	if($webpage & ITEM_WEBPAGE)
		$page_type = 'WEBPAGE';
	elseif($webpage & ITEM_BUILDBLOCK)
		$page_type = 'BUILDBLOCK';
	elseif($webpage & ITEM_PDL)
		$page_type = 'PDL';
	elseif($namespace && $remote_id) {
		$page_type = $namespace;
		$pagetitle = $remote_id;
	}

	if($page_type) {	

		// store page info as an alternate message_id so we can access it via 
		//    https://sitename/page/$channelname/$pagetitle
		// if no pagetitle was given or it couldn't be transliterated into a url, use the first 
		// sixteen bytes of the mid - which makes the link portable and not quite as daunting
		// as the entire mid. If it were the post_id the link would be less portable.

		q("insert into item_id ( iid, uid, sid, service ) values ( %d, %d, '%s','%s' )",
			intval($post_id),
			intval($channel['channel_id']),
			dbesc(($pagetitle) ? $pagetitle : substr($mid,0,16)),
			dbesc($page_type)
		);
	}

	$datarray['id']    = $post_id;
	$datarray['llink'] = $a->get_baseurl() . '/display/' . $channel['channel_address'] . '/' . $post_id;

	call_hooks('post_local_end', $datarray);

	proc_run('php', 'include/notifier.php', $notify_type, $post_id);

	logger('post_complete');

	// figure out how to return, depending on from whence we came

	if($api_source)
		return;

	if($return_path) {
		goaway($a->get_baseurl() . "/" . $return_path);
	}

	$json = array('success' => 1);
	if(x($_REQUEST,'jsreload') && strlen($_REQUEST['jsreload']))
		$json['reload'] = $a->get_baseurl() . '/' . $_REQUEST['jsreload'];

	logger('post_json: ' . print_r($json,true), LOGGER_DEBUG);

	echo json_encode($json);
	killme();
	// NOTREACHED
}





function item_content(&$a) {

	if((! local_user()) && (! remote_user()))
		return;

	require_once('include/security.php');

	if(($a->argc == 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
		require_once('include/items.php');
		drop_item($a->argv[2]);
	}
}

/**
 * This function removes the tag $tag from the text $body and replaces it with 
 * the appropiate link. 
 * 
 * @param unknown_type $body the text to replace the tag in
 * @param unknown_type $access_tag  - used to return tag ACL exclusions e.g. @!foo
 * @param unknown_type $str_tags string to add the tag to
 * @param unknown_type $profile_uid
 * @param unknown_type $tag the tag to replace
 *
 * @return boolean true if replaced, false if not replaced
 */
function handle_tag($a, &$body, &$access_tag, &$str_tags, $profile_uid, $tag) {

	$replaced = false;
	$r = null;

	$termtype = ((strpos($tag,'#') === 0) ? TERM_HASHTAG : TERM_UNKNOWN);
	$termtype = ((strpos($tag,'@') === 0) ? TERM_MENTION : $termtype);

	//is it a hash tag? 
	if(strpos($tag,'#') === 0) {
		// if the tag is replaced...
		if(strpos($tag,'[zrl=')) {
			//...do nothing
			return $replaced;
		}
		if($tag == '#getzot') {
			$basetag = 'getzot'; 
			$url = 'https://redmatrix.me';
			$newtag = '#[zrl=' . $url . ']' . $basetag . '[/zrl]';
			$body = str_replace($tag,$newtag,$body);
			$replaced = true;
		}
		else {
			//base tag has the tags name only
			$basetag = str_replace('_',' ',substr($tag,1));
			//create text for link
			$url = $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag);
			$newtag = '#[zrl=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/zrl]';
			//replace tag by the link
			$body = str_replace($tag, $newtag, $body);
			$replaced = true;
		}
		//is the link already in str_tags?
		if(! stristr($str_tags,$newtag)) {
			//append or set str_tags
			if(strlen($str_tags))
				$str_tags .= ',';
			$str_tags .= $newtag;
		}
		return array('replaced' => $replaced, 'termtype' => $termtype, 'term' => $basetag, 'url' => $url, 'contact' => $r[0]);	
	}

	//is it a person tag? 
	if(strpos($tag,'@') === 0) {
		$exclusive = ((strpos($tag,'!') === 1) ? true : false);
		//is it already replaced? 
		if(strpos($tag,'[zrl='))
			return $replaced;
		$stat = false;
		//get the person's name
		$name = substr($tag,(($exclusive) ? 2 : 1));
		$newname = $name;
		$alias = '';
		$tagcid = 0;

		// is it some generated name?

		if(strrpos($newname,'+')) {
			//get the id
			$tagcid = intval(substr($newname,strrpos($newname,'+') + 1));
			//remove the next word from tag's name
			if(strpos($name,' ')) {
				$name = substr($name,0,strpos($name,' '));
			}

			if($tagcid) { // if there was an id
				// select channel with that id from the logged in user's address book
				$r = q("SELECT * FROM abook left join xchan on abook_xchan = xchan_hash 
					WHERE abook_id = %d AND abook_channel = %d LIMIT 1",
						intval($tagcid),
						intval($profile_uid)
				);
			}
		}

		else {
			$newname = str_replace('_',' ',$name);

			//select someone from this user's contacts by name
			$r = q("SELECT * FROM abook left join xchan on abook_xchan - xchan_hash  
				WHERE xchan_name = '%s' AND abook_channel = %d LIMIT 1",
					dbesc($newname),
					intval($profile_uid)
			);

			if(! $r) {
				//select someone by attag or nick and the name passed in
				$r = q("SELECT * FROM abook left join xchan on abook_xchan - xchan_hash  
					WHERE xchan_addr like ('%s') AND abook_channel = %d LIMIT 1",
						dbesc($newname . '@%'),
						intval($profile_uid)
				);
			}
		}

		// $r is set, if someone could be selected

		if($r) {
			$profile = $r[0]['xchan_url'];
			$newname = $r[0]['xchan_name'];
			//add person's id to $access_tag if exclusive
			if($exclusive) {
				$access_tag .= 'cid:' . $r[0]['xchan_hash'];
			}
		}
		else {
			// check for a group/collection exclusion tag			

			// note that we aren't setting $replaced even though we're replacing text.
			// This tag isn't going to get a term attached to it. It's only used for
			// access control. The link points to out own channel just so it doesn't look
			// weird - as all the other tags are linked to something. 

			if(local_user() && local_user() == $profile_uid) {
				require_once('include/group.php');
				$grp = group_byname($profile_uid,$name);
				if($grp) {
					$g = q("select hash from groups where id = %d and visible = 1 limit 1",
						intval($grp[0]['id'])
					);
					if($g && $exclusive) {
						$access_tag .= 'gid:' . $g[0]['hash'];
					}
					$channel = get_app()->get_channel();
					if($channel) {
						$newtag = '@' . (($exclusive) ? '!' : '') . '[zrl=' . z_root() . '/channel/' . $channel['channel_address'] . ']' . $newname	. '[/zrl]';
						$body = str_replace('@' . (($exclusive) ? '!' : '') . $name, $newtag, $body);
					}
				}		
			}
		}

		//if there is an url for this persons profile
		if(isset($profile)) {
			$replaced = true;
			//create profile link
			$profile = str_replace(',','%2c',$profile);
			$url = $profile;
			$newtag = '@' . (($exclusive) ? '!' : '') . '[zrl=' . $profile . ']' . $newname	. '[/zrl]';
			$body = str_replace('@' . (($exclusive) ? '!' : '') . $name, $newtag, $body);
			//append tag to str_tags
			if(! stristr($str_tags,$newtag)) {
				if(strlen($str_tags))
					$str_tags .= ',';
				$str_tags .= $newtag;
			}
		}
	}
	return array('replaced' => $replaced, 'termtype' => $termtype, 'term' => $newname, 'url' => $url, 'contact' => $r[0]);
}



function fix_attached_photo_permissions($uid,$xchan_hash,$body,
		$str_contact_allow,$str_group_allow,$str_contact_deny,$str_group_deny) {

	$match = null;
	// match img and zmg image links
	if(preg_match_all("/\[[zi]mg\](.*?)\[\/[zi]mg\]/",$body,$match)) {
		$images = $match[1];
		if($images) {
			foreach($images as $image) {
				if(! stristr($image,get_app()->get_baseurl() . '/photo/'))
					continue;
				$image_uri = substr($image,strrpos($image,'/') + 1);
				if(strpos($image_uri,'-') !== false)
					$image_uri = substr($image_uri,0, strpos($image_uri,'-'));
				if(strpos($image_uri,'.') !== false)
					$image_uri = substr($image_uri,0, strpos($image_uri,'.'));
				if(! strlen($image_uri))
					continue;
				$srch = '<' . $xchan_hash . '>';

				$r = q("SELECT id FROM photo 
					WHERE allow_cid = '%s' AND allow_gid = '' AND deny_cid = '' AND deny_gid = ''
					AND resource_id = '%s' AND uid = %d LIMIT 1",
					dbesc($srch),
					dbesc($image_uri),
					intval($uid)
				);

				if($r) {
					$r = q("UPDATE photo SET allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s'
						WHERE resource_id = '%s' AND uid = %d AND album = '%s' ",
						dbesc($str_contact_allow),
						dbesc($str_group_allow),
						dbesc($str_contact_deny),
						dbesc($str_group_deny),
						dbesc($image_uri),
						intval($uid),
						dbesc( t('Wall Photos'))
					);

					// also update the linked item (which is probably invisible)

					$r = q("select id from item
						WHERE allow_cid = '%s' AND allow_gid = '' AND deny_cid = '' AND deny_gid = ''
						AND resource_id = '%s' and resource_type = 'photo' AND uid = %d LIMIT 1",
						dbesc($srch),
						dbesc($image_uri),
						intval($uid)
					);
					if($r) {
						$private = (($str_contact_allow || $str_group_allow || $str_contact_deny || $str_group_deny) ? true : false);

						$r = q("UPDATE item SET allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s', item_private = %d
							WHERE id = %d AND uid = %d limit 1",
							dbesc($str_contact_allow),
							dbesc($str_group_allow),
							dbesc($str_contact_deny),
							dbesc($str_group_deny),
							intval($private),
							intval($r[0]['id']),
							intval($uid)
						);
					}
				}
			}
		}
	}
}


function fix_attached_file_permissions($channel,$observer_hash,$body,
		$str_contact_allow,$str_group_allow,$str_contact_deny,$str_group_deny) {

	$match = false;

	if(preg_match_all("/\[attachment\](.*?)\[\/attachment\]/",$body,$match)) {
		$attaches = $match[1];
		if($attaches) {
			foreach($attaches as $attach) {
				$hash = substr($attach,0,strpos($attach,','));
				$rev = intval(substr($attach,strpos($attach,',')));
				attach_store($channel,$observer_hash,$options = 'update', array(
					'hash'      => $hash,
					'revision'  => $rev,
					'allow_cid' => $str_contact_allow,
					'allow_gid'  => $str_group_allow,
					'deny_cid'  => $str_contact_deny,
					'deny_gid'  => $str_group_deny
				));
			}
		}
	}
}
function item_check_service_class($channel_id,$iswebpage) {
	$ret = array('success' => false, $message => '');
	if ($iswebpage) {
		$r = q("select count(i.id)  as total from item i 
			right join channel c on (i.author_xchan=c.channel_hash and i.uid=c.channel_id )  
			and i.parent=i.id and (i.item_restrict & %d) and i.uid= %d ",
			intval(ITEM_WEBPAGE),
		intval($channel_id)
	);
	}
	else {
		$r = q("select count(i.id)  as total from item i 
			right join channel c on (i.author_xchan=c.channel_hash and i.uid=c.channel_id )  
			and i.parent=i.id and (i.item_restrict=0) and i.uid= %d ",
		intval($channel_id)
	);
	}
	if(! ($r && count($r))) {
		$ret['message'] = t('Unable to obtain identity information from database');
		return $ret;
	} 
	if (!$iswebpage) {
	if(! service_class_allows($channel_id,'total_items',$r[0]['total'])) {
		$result['message'] .= upgrade_message().sprintf(t("You have reached your limit of %1$.0f top level posts."),$r[0]['total']);
		return $result;
	}
	}
	else {
	if(! service_class_allows($channel_id,'total_pages',$r[0]['total'])) {
		$result['message'] .= upgrade_message().sprintf(t("You have reached your limit of %1$.0f webpages."),$r[0]['total']);
		return $result;
	}	
	}

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