aboutsummaryrefslogtreecommitdiffstats
path: root/include/plugin.php
blob: 5ad467f98a84cfad76318ca1d50cf2746660a7d9 (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
<?php /** @file */

require_once("include/friendica_smarty.php");

// install and uninstall plugin

function unload_plugin($plugin){
	logger("Addons: unloading " . $plugin, LOGGER_DEBUG);
    
	@include_once('addon/' . $plugin . '/' . $plugin . '.php');
	if(function_exists($plugin . '_unload')) {
		$func = $plugin . '_unload';
		$func();
	}
}



function uninstall_plugin($plugin) {

	unload_plugin($plugin);

	if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
		return false;

	logger("Addons: uninstalling " . $plugin);
	$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
	@include_once('addon/' . $plugin . '/' . $plugin . '.php');
	if(function_exists($plugin . '_uninstall')) {
		$func = $plugin . '_uninstall';
		$func();
	}

	q("DELETE FROM `addon` WHERE `name` = '%s' ",
		dbesc($plugin)
	);

}

function install_plugin($plugin) {
	if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
		return false;

	logger("Addons: installing " . $plugin);
	$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
	@include_once('addon/' . $plugin . '/' . $plugin . '.php');
	if(function_exists($plugin . '_install')) {
		$func = $plugin . '_install';
		$func();
	}

	$plugin_admin = (function_exists($plugin . "_plugin_admin") ? 1 : 0);
		
	$r = q("INSERT INTO `addon` (`name`, `installed`, `timestamp`, `plugin_admin`) VALUES ( '%s', 1, %d , %d ) ",
		dbesc($plugin),
		intval($t),
		$plugin_admin
	);

	load_plugin($plugin);
			
}


function load_plugin($plugin) {
	// silently fail if plugin was removed

	if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
		return false;

	logger("Addons: loading " . $plugin);
	$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
	@include_once('addon/' . $plugin . '/' . $plugin . '.php');
	if(function_exists($plugin . '_load')) {
		$func = $plugin . '_load';
		$func();
		

		// we can add the following with the previous SQL
		// once most site tables have been updated.
		// This way the system won't fall over dead during the update.

		if(file_exists('addon/' . $plugin . '/.hidden')) {
			q("update addon set hidden = 1 where name = '%s' limit 1",
				dbesc($plugin)
			);
		}
		return true;
	}
	else {
		logger("Addons: FAILED loading " . $plugin);
		return false;
	}

}

// reload all updated plugins

function reload_plugins() {
	$plugins = get_config('system','addon');
	if(strlen($plugins)) {

		$r = q("SELECT * FROM `addon` WHERE `installed` = 1");
		if(count($r))
			$installed = $r;
		else
			$installed = array();

		$parr = explode(',',$plugins);

		if(count($parr)) {
			foreach($parr as $pl) {

				$pl = trim($pl);

				$fname = 'addon/' . $pl . '/' . $pl . '.php';

				if(file_exists($fname)) {
					$t = @filemtime($fname);
					foreach($installed as $i) {
						if(($i['name'] == $pl) && ($i['timestamp'] != $t)) {	
							logger('Reloading plugin: ' . $i['name']);
							@include_once($fname);

							if(function_exists($pl . '_unload')) {
								$func = $pl . '_unload';
								$func();
							}
							if(function_exists($pl . '_load')) {
								$func = $pl . '_load';
								$func();
							}
							q("UPDATE `addon` SET `timestamp` = %d WHERE `id` = %d LIMIT 1",
								intval($t),
								intval($i['id'])
							);
						}
					}
				}
			}
		}
	}
}
				





function register_hook($hook,$file,$function,$priority=0) {

	$r = q("SELECT * FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s' LIMIT 1",
		dbesc($hook),
		dbesc($file),
		dbesc($function)
	);
	if(count($r))
		return true;

	$r = q("INSERT INTO `hook` (`hook`, `file`, `function`, `priority`) VALUES ( '%s', '%s', '%s', '%s' ) ",
		dbesc($hook),
		dbesc($file),
		dbesc($function),
		dbesc($priority)
	);
	return $r;
}


function unregister_hook($hook,$file,$function) {

	$r = q("DELETE FROM hook WHERE hook = '%s' AND `file` = '%s' AND `function` = '%s' LIMIT 1",
		dbesc($hook),
		dbesc($file),
		dbesc($function)
	);
	return $r;
}


//
// It might not be obvious but themes can manually add hooks to the $a->hooks
// array in their theme_init() and use this to customise the app behaviour.  
// UPDATE: use insert_hook($hookname,$function_name) to do this
//


function load_hooks() {
	$a = get_app();
//	if(! is_array($a->hooks))
		$a->hooks = array();
	$r = q("SELECT * FROM hook WHERE true ORDER BY priority DESC");
	if($r) {
		foreach($r as $rr) {
			if(! array_key_exists($rr['hook'],$a->hooks))
				$a->hooks[$rr['hook']] = array();
			$a->hooks[$rr['hook']][] = array($rr['file'],$rr['function']);
		}
	}
//logger('hooks: ' . print_r($a->hooks,true));

}

/**
 *
 * @function insert_hook($hook,$fn)
 *
 * Insert a short-lived hook into the running page request. 
 * Hooks are normally persistent so that they can be called 
 * across asynchronous processes such as delivery and poll
 * processes.
 *
 * insert_hook lets you attach a hook callback immediately
 * which will not persist beyond the life of this page request
 * or the current process. 
 *
 * @param string $hook;
 *     name of hook to attach callback
 * @param string $fn;
 *     function name of callback handler
 *
 */ 

function insert_hook($hook,$fn) {
	$a = get_app();
	if(! is_array($a->hooks))
		$a->hooks = array();
	if(! array_key_exists($hook,$a->hooks))
		$a->hooks[$hook] = array();
	$a->hooks[$hook][] = array('',$fn);
}
	



function call_hooks($name, &$data = null) {
	$a = get_app();

	if((is_array($a->hooks)) && (array_key_exists($name,$a->hooks))) {
		foreach($a->hooks[$name] as $hook) {
			if($hook[0])
				@include_once($hook[0]);
			if(function_exists($hook[1])) {
				$func = $hook[1];
				$func($a,$data);
			}
			else {
				// remove orphan hooks
				q("delete from hook where hook = '%s' and file = '$s' and function = '%s' limit 1",
					dbesc($name),
					dbesc($hook[0]),
					dbesc($hook[1])
				);
			}
		}
	}

}


/*
 * parse plugin comment in search of plugin infos.
 * like
 * 	
 * 	 * Name: Plugin
 *   * Description: A plugin which plugs in
 * 	 * Version: 1.2.3
 *   * Author: John <profile url>
 *   * Author: Jane <email>
 *   * Compat: Red [(version)], Friendica [(version)]
 *   *
 */


function get_plugin_info($plugin){
	$info=Array(
		'name' => $plugin,
		'description' => "",
		'author' => array(),
		'version' => "",
		'compat' => ""
	);
	
	if (!is_file("addon/$plugin/$plugin.php")) return $info;
	
	$f = file_get_contents("addon/$plugin/$plugin.php");
	$r = preg_match("|/\*.*\*/|msU", $f, $m);
	
	if ($r){
		$ll = explode("\n", $m[0]);
		foreach( $ll as $l ) {
			$l = trim($l,"\t\n\r */");
			if ($l!=""){
				list($k,$v) = array_map("trim", explode(":",$l,2));
				$k= strtolower($k);
				if ($k=="author"){
					$r=preg_match("|([^<]+)<([^>]+)>|", $v, $m);
					if ($r) {
						$info['author'][] = array('name'=>$m[1], 'link'=>$m[2]);
					} else {
						$info['author'][] = array('name'=>$v);
					}
				} else {
					if (array_key_exists($k,$info)){
						$info[$k]=$v;
					}
				}
				
			}
		}
		
	}
	return $info;
}


/*
 * parse theme comment in search of theme infos.
 * like
 * 	
 * 	 * Name: My Theme
 *   * Description: My Cool Theme
 * 	 * Version: 1.2.3
 *   * Author: John <profile url>
 *   * Maintainer: Jane <profile url>
 *   * Compat: Friendica [(version)], Red [(version)]
 *   *
 */


function get_theme_info($theme){
	$info=Array(
		'name' => $theme,
		'description' => "",
		'author' => array(),
		'version' => "",
		'compat' => "",
		'credits' => "",
		'maintainer' => array(),
		'experimental' => false,
		'unsupported' => false
	);

	if(file_exists("view/theme/$theme/experimental"))
		$info['experimental'] = true;
	if(file_exists("view/theme/$theme/unsupported"))
		$info['unsupported'] = true;

	if (!is_file("view/theme/$theme/php/theme.php")) return $info;
	
	$f = file_get_contents("view/theme/$theme/php/theme.php");
	$r = preg_match("|/\*.*\*/|msU", $f, $m);
	
	
	if ($r){
		$ll = explode("\n", $m[0]);
		foreach( $ll as $l ) {
			$l = trim($l,"\t\n\r */");
			if ($l!=""){
				list($k,$v) = array_map("trim", explode(":",$l,2));
				$k= strtolower($k);
				if ($k=="author"){

					$r=preg_match("|([^<]+)<([^>]+)>|", $v, $m);
					if ($r) {
						$info['author'][] = array('name'=>$m[1], 'link'=>$m[2]);
					} else {
						$info['author'][] = array('name'=>$v);
					}
				}
				elseif ($k=="maintainer"){
					$r=preg_match("|([^<]+)<([^>]+)>|", $v, $m);
					if ($r) {
						$info['maintainer'][] = array('name'=>$m[1], 'link'=>$m[2]);
					} else {
						$info['maintainer'][] = array('name'=>$v);
					}
				} else {
					if (array_key_exists($k,$info)){
						$info[$k]=$v;
					}
				}
				
			}
		}
		
	}
	return $info;
}


function get_theme_screenshot($theme) {
	$a = get_app();
	$exts = array('.png','.jpg');
	foreach($exts as $ext) {
		if(file_exists('view/theme/' . $theme . '/img/screenshot' . $ext))
			return($a->get_baseurl() . '/view/theme/' . $theme . '/img/screenshot' . $ext);
	}
	return($a->get_baseurl() . '/images/blank.png');
}


// check service_class restrictions. If there are no service_classes defined, everything is allowed.
// if $usage is supplied, we check against a maximum count and return true if the current usage is 
// less than the subscriber plan allows. Otherwise we return boolean true or false if the property
// is allowed (or not) in this subscriber plan. An unset property for this service plan means 
// the property is allowed, so it is only necessary to provide negative properties for each plan, 
// or what the subscriber is not allowed to do. 


function service_class_allows($uid,$property,$usage = false) {
	$a = get_app();
	if($uid == local_user()) {
		$service_class = $a->account['account_service_class'];
	}
	else {
		$r = q("select account_service_class as service_class 
				from channel c, account a 
				where c.channel_account_id=a.account_id and c.channel_id= %d limit 1",
			intval($uid)
		);
		if($r !== false and count($r)) {
			$service_class = $r[0]['service_class'];
		}
	}
	if(! x($service_class))
		return true; // everything is allowed

	$arr = get_config('service_class',$service_class);
	if(! is_array($arr) || (! count($arr)))
		return true;

	if($usage === false)
		return ((x($arr[$property])) ? (bool) $arr['property'] : true);
	else {
		if(! array_key_exists($property,$arr))
			return true;
		return (((intval($usage)) < intval($arr[$property])) ? true : false);
	}
}


function service_class_fetch($uid,$property) {
	$a = get_app();
	if($uid == local_user()) {
		$service_class = $a->account['account_service_class'];
	}
	else {
		$r = q("select account_service_class as service_class 
				from channel c, account a 
				where c.channel_account_id=a.account_id and c.channel_id= %d limit 1",
				intval($uid)
		);
		if($r !== false and count($r)) {
			$service_class = $r[0]['service_class'];
		}
	}
	if(! x($service_class))
		return false; // everything is allowed

	$arr = get_config('service_class',$service_class);

	if(! is_array($arr) || (! count($arr)))
		return false;

	return((array_key_exists($property,$arr)) ? $arr[$property] : false);

}

function upgrade_link($bbcode = false) {
	$l = get_config('service_class','upgrade_link');
	if(! $l)
		return '';
	if($bbcode)
		$t = sprintf('[zrl=%s]' . t('Click here to upgrade.') . '[/zrl]', $l);
	else
		$t = sprintf('<a href="%s">' . t('Click here to upgrade.') . '</div>', $l);
	return $t;
}

function upgrade_message($bbcode = false) {
	$x = upgrade_link($bbcode);
	return t('This action exceeds the limits set by your subscription plan.') . (($x) ? ' ' . $x : '') ;
}

function upgrade_bool_message($bbcode = false) {
	$x = upgrade_link($bbcode);
	return t('This action is not available under your subscription plan.') . (($x) ? ' ' . $x : '') ;
}



function head_add_css($src,$media = 'screen') {
	get_app()->css_sources[] = array($src,$media);
}


function head_remove_css($src,$media = 'screen') {
	$a = get_app();
	$index = array_search(array($src,$media),$a->css_sources);
	if($index !== false)
		unset($a->css_sources[$index]);

}

function head_get_css() {
	$str = '';
	$sources = get_app()->css_sources;
	if(count($sources)) 
		foreach($sources as $source)
			$str .= format_css_if_exists($source);
	return $str;
}

function format_css_if_exists($source) {
	
	if(strpos($source[0],'/') !== false)
		$path = $source[0];
	else
		$path = theme_include($source[0]);

	if($path)
		return '<link rel="stylesheet" href="' . z_root() . '/' . $path . '" type="text/css" media="' . $source[1] . '" />' . "\r\n";
		
}

function head_add_js($src) {
	get_app()->js_sources[] = $src;
}

function head_remove_js($src) {
	$a = get_app();
	$index = array_search($src,$a->js_sources);
	if($index !== false)
		unset($a->js_sources[$index]);

}

function head_get_js() {
	$str = '';
	$sources = get_app()->js_sources;
	if(count($sources)) 
		foreach($sources as $source)
			$str .= format_js_if_exists($source);
	return $str;
}

function format_js_if_exists($source) {

	if(strpos($source,'/') !== false)
		$path = $source;
	else
		$path = theme_include($source);
	if($path)
		return '<script src="' . z_root() . '/' . $path . '" ></script>' . "\r\n" ;

}


function theme_include($file, $root = '') {

	$a = get_app();

	// Make sure $root ends with a slash / if it's not blank
	if($root !== '' && $root[strlen($root)-1] !== '/')
		$root = $root . '/';

	$theme_info = $a->theme_info;

	if(array_key_exists('extends',$theme_info))
		$parent = $theme_info['extends'];
	else
		$parent = 'NOPATH';

	$theme = current_theme();

	$ext = substr($file,strrpos($file,'.')+1);

	$paths = array(
		"{$root}view/theme/$theme/$ext/$file",
		"{$root}view/theme/$parent/$ext/$file",
		"{$root}view/$ext/$file",
	);

	foreach($paths as $p) {
		// strpos() is faster than strstr when checking if one string is in another (http://php.net/manual/en/function.strstr.php)
		if(strpos($p,'NOPATH') !== false)
			continue;
		if(file_exists($p))
			return $p;
	}
	return '';
}




function get_intltext_template($s, $root = '') {
	$a = get_app();
	$t = $a->template_engine();

	$template = $t->get_intltext_template($s, $root);
	return $template;

}


function get_markup_template($s, $root = '') {
	$a = get_app();
	$t = $a->template_engine();
	$template = $t->get_markup_template($s, $root);
	return $template;
}