aboutsummaryrefslogtreecommitdiffstats
path: root/mod/acl.php
blob: 6383d774cccb3ee80a2219552c8780953e95b81a (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
<?php
/* ACL selector json backend */

require_once("include/acl_selectors.php");

function acl_init(&$a){

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

	$start = (x($_REQUEST,'start')?$_REQUEST['start']:0);
	$count = (x($_REQUEST,'count')?$_REQUEST['count']:100);
	$search = (x($_REQUEST,'search')?$_REQUEST['search']:"");
	$type = (x($_REQUEST,'type')?$_REQUEST['type']:"");
	$noforums = (x($_REQUEST,'n') ? $_REQUEST['n'] : false);	

	// List of channels whose connections to also suggest, e.g. currently viewed channel or channels mentioned in a post
	$extra_channels = (x($_REQUEST,'extra_channels') ? $_REQUEST['extra_channels'] : array());

	// For use with jquery.autocomplete for private mail completion

	if(x($_REQUEST,'query') && strlen($_REQUEST['query'])) {
		if(! $type)
			$type = 'm';
		$search = $_REQUEST['query'];
	}

	if(!(local_channel()))
		if(!($type == 'x' || $type == 'c'))
			killme();

	if ($search != "") {
		$sql_extra = " AND `name` LIKE " . protect_sprintf( "'%" . dbesc($search) . "%'" ) . " ";
		$sql_extra2 = "AND ( xchan_name LIKE " . protect_sprintf( "'%" . dbesc($search) . "%'" ) . " OR xchan_addr LIKE " . protect_sprintf( "'%" . dbesc($search) . ((strpos($search,'@') === false) ? "%@%'"  : "%'")) . ") ";

		// This horrible mess is needed because position also returns 0 if nothing is found. W/ould be MUCH easier if it instead returned a very large value
		// Otherwise we could just order by LEAST(POSITION($search IN xchan_name),POSITION($search IN xchan_addr)).
		$order_extra2 = "CASE WHEN xchan_name LIKE " . protect_sprintf( "'%" . dbesc($search) . "%'" ) ." then POSITION('".dbesc($search)."' IN xchan_name) else position('".dbesc($search)."' IN xchan_addr) end, ";
		$col = ((strpos($search,'@') !== false) ? 'xchan_addr' : 'xchan_name' );
		$sql_extra3 = "AND $col like " . protect_sprintf( "'%" . dbesc($search) . "%'" ) . " ";

	} else {
		$sql_extra = $sql_extra2 = $sql_extra3 = "";
	}
	
	
	$groups = array();
	$contacts = array();
	
	if ($type=='' || $type=='g'){
		
		$r = q("SELECT `groups`.`id`, `groups`.`hash`, `groups`.`name`, 
				%s as uids
				FROM `groups`,`group_member` 
				WHERE `groups`.`deleted` = 0 AND `groups`.`uid` = %d 
					AND `group_member`.`gid`=`groups`.`id`
					$sql_extra
				GROUP BY `groups`.`id`
				ORDER BY `groups`.`name` 
				LIMIT %d OFFSET %d",
			db_concat('group_member.xchan', ','),
			intval(local_channel()),
			intval($count),
			intval($start)
		);

		foreach($r as $g){
//		logger('acl: group: ' . $g['name'] . ' members: ' . $g['uids']);		
			$groups[] = array(
				"type"  => "g",
				"photo" => "images/twopeople.png",
				"name"  => $g['name'],
				"id"	=> $g['id'],
				"xid"   => $g['hash'],
				"uids"  => explode(",",$g['uids']),
				"link"  => ''
			);
		}
	}

	if ($type=='' || $type=='c') {
		$extra_channels_sql  = ''; 
		// Only include channels who allow the observer to view their permissions
		foreach($extra_channels as $channel) {
			if(perm_is_allowed(intval($channel), get_observer_hash(),'view_contacts'))
				$extra_channels_sql .= "," . intval($channel);
		}

		$extra_channels_sql = substr($extra_channels_sql,1); // Remove initial comma

		// Getting info from the abook is better for local users because it contains info about permissions
		if(local_channel()) {
			if($extra_channels_sql != '')
				$extra_channels_sql = " OR (abook_channel IN ($extra_channels_sql)) and abook_hidden = 0 ";

			$r = q("SELECT abook_id as id, xchan_hash as hash, xchan_name as name, xchan_photo_s as micro, xchan_url as url, xchan_addr as nick, abook_their_perms, abook_flags 
				FROM abook left join xchan on abook_xchan = xchan_hash 
				WHERE (abook_channel = %d $extra_channels_sql) AND abook_blocked = 0 and abook_pending = 0 and abook_archived = 0 and xchan_deleted = 0 $sql_extra2 order by $order_extra2 xchan_name asc" ,
				intval(local_channel())
			);

		}
		else { // Visitors
			$r = q("SELECT xchan_hash as id, xchan_hash as hash, xchan_name as name, xchan_photo_s as micro, xchan_url as url, xchan_addr as nick, 0 as abook_their_perms, 0 as abook_flags
				FROM xchan left join xlink on xlink_link = xchan_hash
				WHERE xlink_xchan  = '%s' AND xchan_deleted = 0 $sql_extra2 order by $order_extra2 xchan_name asc" ,
				dbesc(get_observer_hash())
			);

			// Find contacts of extra channels
			// This is probably more complicated than it needs to be
			if($extra_channels_sql) {
				// Build a list of hashes that we got previously so we don't get them again
				$known_hashes = array("'".get_observer_hash()."'");
				if($r)
					foreach($r as $rr) 
						$known_hashes[] = "'".$rr['hash']."'";
				$known_hashes_sql = 'AND xchan_hash not in ('.join(',',$known_hashes).')';

				$r2 = q("SELECT abook_id as id, xchan_hash as hash, xchan_name as name, xchan_photo_s as micro, xchan_url as url, xchan_addr as nick, abook_their_perms, abook_flags 
					FROM abook left join xchan on abook_xchan = xchan_hash 
					WHERE abook_channel IN ($extra_channels_sql) $known_hashes_sql AND abook_blocked = 0 and abook_pending = 0 and abook_archived = 0 and abook_hidden = 0 and xchan_deleted = 0 $sql_extra2 order by $order_extra2 xchan_name asc");
				if($r2)
					$r = array_merge($r,$r2);

				// Sort accoring to match position, then alphabetically. This could be avoided if the above two SQL queries could be combined into one, and the sorting could be done on the SQl server (like in the case of a local user)
				$matchpos = function($x) use($search) {
					$namepos = strpos($x['name'],$search);
					$nickpos = strpos($x['nick'],$search);
					// Use a large position if not found
					return min($namepos === false ? 9999 : $namepos, $nickpos === false ? 9999 : $nickpos);
				};
				// This could be made simpler if PHP supported stable sorting
				usort($r,function($a,$b) use($matchpos) {
					$pos1 = $matchpos($a);
					$pos2 = $matchpos($b);
					if($pos1 == $pos2) { // Order alphabetically if match position is the same
						if($a['name'] == $b['name'])
							return 0;
						else
							return ($a['name'] < $b['name']) ? -1 : 1;
					}
					return ($pos1 < $pos2) ? -1 : 1;
				});
			}
		}
		if(intval(get_config('system','taganyone')) || intval(get_pconfig(local_channel(),'system','taganyone'))) {
			if((count($r) < 100) && $type == 'c') {
				$r2 = q("SELECT substr(xchan_hash,1,18) as id, xchan_hash as hash, xchan_name as name, xchan_photo_s as micro, xchan_url as url, xchan_addr as nick, 0 as abook_their_perms, 0 as abook_flags 
					FROM xchan 
					WHERE xchan_deleted = 0 $sql_extra2 order by $order_extra2 xchan_name asc" 
				);
				if($r2)
					$r = array_merge($r,$r2);
			}
		}
	}
	elseif($type == 'm') {

		$r = q("SELECT xchan_hash as id, xchan_name as name, xchan_addr as nick, xchan_photo_s as micro, xchan_url as url 
			FROM abook left join xchan on abook_xchan = xchan_hash
			WHERE abook_channel = %d and ( (abook_their_perms = null) or (abook_their_perms & %d )>0)
			and xchan_deleted = 0
			$sql_extra3
			ORDER BY `xchan_name` ASC ",
			intval(local_channel()),
			intval(PERMS_W_MAIL)
		);
	}
	elseif(($type == 'a') || ($type == 'p')) {

		$r = q("SELECT abook_id as id, xchan_name as name, xchan_hash as hash, xchan_addr as nick, xchan_photo_s as micro, xchan_network as network, xchan_url as url, xchan_addr as attag , abook_their_perms FROM abook left join xchan on abook_xchan = xchan_hash
			WHERE abook_channel = %d
			and xchan_deleted = 0
			$sql_extra3
			ORDER BY xchan_name ASC ",
			intval(local_channel())
		);

	}
	elseif($type == 'x') {
		$r = navbar_complete($a);
		$contacts = array();
		if($r) {
			foreach($r as $g) {
				$contacts[] = array(
					"photo"    => $g['photo'],
					"name"     => $g['name'],
					"nick"     => $g['address'],
				);
			}
		}

		$o = array(
			'start' => $start,
			'count'	=> $count,
			'items'	=> $contacts,
		);
		echo json_encode($o);
		killme();
	}
	else
		$r = array();

	if(count($r)) {
		foreach($r as $g){

			// remove RSS feeds from ACLs - they are inaccessible
			if(strpos($g['hash'],'/') && $type != 'a')
				continue;

			if(($g['abook_their_perms'] & PERMS_W_TAGWALL) && $type == 'c' && (! $noforums)) {
				$contacts[] = array(
					"type"     => "c",
					"photo"    => "images/twopeople.png",
					"name"     => $g['name'] . '+',
					"id"	   => $g['id'] . '+',
					"xid"      => $g['hash'],
					"link"     => $g['nick'],
					"nick"     => substr($g['nick'],0,strpos($g['nick'],'@')),
					"self"     => (intval($g['abook_self']) ? 'abook-self' : ''),
					"taggable" => 'taggable',
					"label"    => t('network')
				);
			}
			$contacts[] = array(
				"type"     => "c",
				"photo"    => $g['micro'],
				"name"     => $g['name'],
				"id"	   => $g['id'],
				"xid"      => $g['hash'],
				"link"     => $g['nick'],
				"nick"     => (($g['nick']) ? substr($g['nick'],0,strpos($g['nick'],'@')) : t('RSS')),
				"self"     => (intval($g['abook_self']) ? 'abook-self' : ''),
				"taggable" => '',
				"label"    => '',
			);
		}			
	}
		
	$items = array_merge($groups, $contacts);
	
	$o = array(
		'start' => $start,
		'count'	=> $count,
		'items'	=> $items,
	);


	
	echo json_encode($o);

	killme();
}


function navbar_complete(&$a) {

//	logger('navbar_complete');

	if((get_config('system','block_public')) && (! local_channel()) && (! remote_channel())) {
		return;
	}

	$dirmode = intval(get_config('system','directory_mode'));
	$search = ((x($_REQUEST,'search')) ? htmlentities($_REQUEST['search'],ENT_COMPAT,'UTF-8',false) : '');
	if(! $search || mb_strlen($search) < 2)
		return array();

	$star = false;
	$address = false;

	if(substr($search,0,1) === '@')
		$search = substr($search,1);

	if(substr($search,0,1) === '*') {
		$star = true;
		$search = substr($search,1);
	}

	if(strpos($search,'@') !== false) {
		$address = true;
	}

	if(($dirmode == DIRECTORY_MODE_PRIMARY) || ($dirmode == DIRECTORY_MODE_STANDALONE)) {
		$url = z_root() . '/dirsearch';
	}

	if(! $url) {
		require_once("include/dir_fns.php");
		$directory = find_upstream_directory($dirmode);
		$url = $directory['url'] . '/dirsearch';
	}

	$count = (x($_REQUEST,'count')?$_REQUEST['count']:100);
	if($url) {
		$query = $url . '?f=' ;
		$query .= '&name=' . urlencode($search) . "&limit=$count" . (($address) ? '&address=' . urlencode($search) : '');

		$x = z_fetch_url($query);
		if($x['success']) {
			$t = 0;
			$j = json_decode($x['body'],true);
			if($j && $j['results']) {
				return $j['results'];
			}
		}
	}
	return array();
}