wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.6.0, at wp-optimize.php

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1	<?php
2	/**
3	Plugin Name: WP-Optimize - Clean, Compress, Cache
4	Plugin URI: https://getwpo.com
5	Description: WP-Optimize makes your site fast and efficient. It cleans the database, compresses images and caches pages. Fast sites attract more traffic and users.
6	Version: 3.6.0
7	Update URI: https://wordpress.org/plugins/wp-optimize/
8	Author: David Anderson, Ruhani Rabin, Team Updraft
9	Author URI: https://updraftplus.com
10	Text Domain: wp-optimize
11	Domain Path: /languages
12	License: GPLv2 or later
13	*/
14
15	if (!defined('ABSPATH')) die('No direct access allowed');
16
17	// Check to make sure if WP_Optimize is already call and returns.
18	if (!class_exists('WP_Optimize')) :
19	define('WPO_VERSION', '3.6.0');
20	define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
21	define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
22	define('WPO_PLUGIN_SLUG', plugin_basename(__FILE__));
23	define('WPO_PREMIUM_NOTIFICATION', false);
24	define('WPO_MINIFY_PHP_VERSION_MET', version_compare(PHP_VERSION, '5.4', '>=') ? true : false);
25	if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true);
26
27	class WP_Optimize {
28
29	public $premium_version_link = 'https://getwpo.com/buy/';
30
31	private $template_directories;
32
33	protected static $_instance = null;
34
35	protected $_cache_init_status = null;
36
37	/**
38	* Class constructor
39	*/
40	public function __construct() {
41	spl_autoload_register(array($this, 'loader'));
42
43	// Checks if premium is installed along with plugins needed.
44	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
45
46	register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
47	register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
48	register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
49
50	$this->load_admin();
51	add_action('admin_init', array($this, 'admin_init'));
52	add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);
53
54	add_action('init', array($this, 'schedule_plugin_cron_tasks'));
55
56	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
57	add_action('wpo_cron_event2', array($this, 'cron_action'));
58	add_filter('cron_schedules', array($this, 'cron_schedules'));
59
60	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
61
62	if (!self::is_premium()) {
63	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
64	}
65
66	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
67
68	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
69
70	$this->load_ajax_handler();
71	WP_Optimize_Heartbeat::get_instance();
72
73	// Show update to Premium notice for non-premium multisite.
74	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
75
76	// Action column (show repair button if need).
77	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
78
79	/**
80	* Add action for display Images > Compress images tab.
81	*/
82	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
83
84	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
85
86	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
87
88	register_shutdown_function(array($this, 'log_fatal_errors'));
89
90	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
91
92	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
93
94	$import_done_hooks = array(
95	'import_end', // wordpress importer
96	'pmxi_after_xml_import', // wp all import
97	);
98
99	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
100
101	foreach ($db_update_hooks as $hook) {
102	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
103	}
104	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
105
106	}
107
108	/**
109	* Auto-loads classes.
110	*
111	* @param string $class_name The name of the class.
112	*/
113	private function loader($class_name) {
114	$dirs = $this->get_class_directories();
115
116	foreach ($dirs as $dir) {
117	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
118	if (file_exists($class_file)) {
119	require_once($class_file);
120	return;
121	}
122	}
123
124	// Include PHP Minify - https://github.com/matthiasmullie/minify
125	if (strpos($class_name, 'MatthiasMullie') !== false) {
126	$class_name_parts = explode('\\', $class_name);
127	$class_file = WPO_PLUGIN_MAIN_PATH.'vendor/'.strtolower($class_name_parts[0]).'/'.strtolower(preg_replace('/([a-z])([A-Z])/', '$1-$2', $class_name_parts[1])).'/src/'.implode('/', array_slice($class_name_parts, 2)).'.php';
128	if (file_exists($class_file)) {
129	require_once($class_file);
130	return;
131	}
132	}
133
134	if ('Minify_HTML' == $class_name) {
135	require_once WPO_PLUGIN_MAIN_PATH.'vendor/mrclay/minify/lib/Minify/HTML.php';
136	return;
137	}
138	}
139
140	/**
141	* Returns an array of class directories
142	*
143	* @return array
144	*/
145	private function get_class_directories() {
146	return array(
147	'cache',
148	'compatibility',
149	'includes',
150	'minify',
151	'optimizations',
152	'webp',
153	);
154	}
155
156	/**
157	* Initialize Admin class to load admin UI
158	*/
159	private function load_admin() {
160	$this->get_admin_instance();
161	}
162
163	/**
164	* Returns Admin class instance
165	*
166	* @return WP_Optimize_Admin
167	*/
168	public function get_admin_instance() {
169	return WP_Optimize_Admin::instance();
170	}
171
172	/**
173	* Detect when an active plugin or theme is updated, and trigger an action
174	*
175	* @param object $upgrader_object
176	* @param array $options
177	* @return void
178	*/
179	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
180	if (empty($options) \|\| !isset($options['type'])) return;
181
182	$should_purge_cache = false;
183	$skin = $upgrader_object->skin;
184	if ('plugin' === $options['type']) {
185	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
186	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
187	$should_purge_cache = true;
188	}
189	} elseif ('theme' === $options['type']) {
190	$active_theme = get_stylesheet();
191	$parent_theme = get_template();
192	// A theme is updated using the upload system
193	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
194	$updated_theme = $upgrader_object->result['destination_name'];
195	// Check if the theme is in use
196	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
197	$should_purge_cache = true;
198	}
199	// A theme is updated using the classic update system
200	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
201	// Check if the theme is in use
202	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
203	$should_purge_cache = true;
204	}
205	}
206	}
207
208	/**
209	* Action executed when an active theme or plugin was updated
210	*/
211	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
212
213	}
214
215	/**
216	* Sets a flag to indicate an import action is done, if needed
217	*/
218	public function maybe_schedule_update_record_count_event() {
219	if (!wp_next_scheduled('wpo_update_record_count_event')) {
220	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
221	}
222	}
223
224	public function admin_page_wpo_images_smush() {
225	$options = Updraft_Smush_Manager()->get_smush_options();
226	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
227	$sites = WP_Optimize()->get_sites();
228	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion()));
229	$this->include_template('images/smush-popup.php');
230	}
231
232	public static function instance() {
233	if (empty(self::$_instance)) {
234	self::$_instance = new self();
235	}
236	return self::$_instance;
237	}
238
239	public function get_optimizer() {
240	return WP_Optimizer::instance();
241	}
242
243	/**
244	* Adds 3rd party plugin compatibilities.
245	*/
246	public function load_compatibilities() {
247	WPO_Polylang_Compatibility::instance();
248	WPO_Page_Builder_Compatibility::instance();
249	WPO_Custom_Permalink_Compatibility::instance();
250	WPO_TranslatePress_Compatibility::instance();
251
252	do_action('wpo_load_compatibilities');
253	}
254
255	/**
256	* Get and instantiate WP_Optimize_Minify
257	*
258	* @return WP_Optimize_Minify
259	*/
260	public function get_minify() {
261	return WP_Optimize_Minify::instance();
262	}
263
264	public function get_options() {
265	return WP_Optimize_Options::instance();
266	}
267
268	public function get_notices() {
269	return WP_Optimize_Notices::instance();
270	}
271
272	/**
273	* Returns instance if WPO_Page_Cache class.
274	*
275	* @return WPO_Page_Cache
276	*/
277	public function get_page_cache() {
278	return WPO_Page_Cache::instance();
279	}
280
281	/**
282	* Returns instance if WP_Optimize_WebP class.
283	*
284	* @return WP_Optimize_WebP
285	*/
286	public function get_webp_instance() {
287	return WP_Optimize_WebP::get_instance();
288	}
289
290	/**
291	* Detects if the platform is Kinsta or not
292	*
293	* @return bool Returns true if it is Kinsta platform, otherwise returns false
294	*/
295	private function is_kinsta() {
296	return isset($_SERVER['KINSTA_CACHE_ZONE']);
297	}
298
299	/**
300	* Detects whether the server handles cache. eg. Nginx cache
301	*/
302	public function does_server_handles_cache() {
303	return $this->is_kinsta();
304	}
305
306	/**
307	* Detects whether the server supports table optimization.
308	*
309	* Some servers prevent table optimization
310	* because InnoDB engine does not optimize table
311	* instead it drops tables and recreate them
312	* which results in elevated disk write operations
313	*/
314	public function does_server_allows_table_optimization() {
315	return !$this->is_kinsta();
316	}
317
318	/**
319	* Detects whether the server supports local webp conversion tools
320	*/
321	private function does_server_allows_local_webp_conversion() {
322	return !$this->is_kinsta();
323	}
324
325	/**
326	* Create instance of WP_Optimize_Browser_Cache.
327	*
328	* @return WP_Optimize_Browser_Cache
329	*/
330	public function get_browser_cache() {
331	return WP_Optimize_Browser_Cache::instance();
332	}
333
334	/**
335	* Returns WP_Optimize_Database_Information instance.
336	*
337	* @return WP_Optimize_Database_Information
338	*/
339	public function get_db_info() {
340	return WP_Optimize_Database_Information::instance();
341	}
342
343	/**
344	* Returns instance of WP_Optimize_Gzip_Compression.
345	*
346	* @return WP_Optimize_Gzip_Compression
347	*/
348	public function get_gzip_compression() {
349	return WP_Optimize_Gzip_Compression::instance();
350	}
351
352	/**
353	* Create instance of WP_Optimize_Htaccess.
354	*
355	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
356	* @return WP_Optimize_Htaccess
357	*/
358	public static function get_htaccess($htaccess_file = '') {
359	return new WP_Optimize_Htaccess($htaccess_file);
360	}
361
362	/**
363	* Return instance of Updraft_Logger
364	*
365	* @return Updraft_Logger
366	*/
367	public function get_logger() {
368	return Updraft_Logger::instance();
369	}
370
371	/**
372	* Check if the current page belongs to WP-Optimize.
373	*
374	* @return bool
375	*/
376	public function is_wpo_page() {
377	$current_screen = get_current_screen();
378
379	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
380	}
381
382	/**
383	* Enqueue scripts and styles on WP-Optimize pages.
384	*/
385	public function admin_enqueue_scripts() {
386	$enqueue_version = $this->get_enqueue_version();
387	$min_or_not = $this->get_min_or_not_string();
388	$min_or_not_internal = $this->get_min_or_not_internal_string();
389
390	// Register or enqueue common scripts
391	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
392	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
393	wp_register_script('wp-optimize-block-ui', WPO_PLUGIN_URL.'js/blockUI'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version);
394	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
395
396	// load scripts and styles only on WP-Optimize pages.
397	if (!$this->is_wpo_page()) return;
398
399	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
400
401	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
402
403	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
404	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js', 'wp-optimize-block-ui'), $enqueue_version);
405	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js', 'wp-optimize-heartbeat-js'), $enqueue_version);
406	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
407	// Using tablesorter to help with organising the DB size on Table Information
408	// https://github.com/Mottie/tablesorter
409	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
410
411	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
412
413	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
414
415	$js_variables = $this->wpo_js_translations();
416	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
417
418	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
419
420	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
421	}
422
423	/**
424	* Enqueue any required front-end scripts
425	*
426	* @return void
427	*/
428	public function frontend_enqueue_scripts() {
429	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
430	$enqueue_version = $this->get_enqueue_version();
431	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
432
433	// Register or enqueue common scripts
434	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
435	}
436
437	/**
438	* Load Task Manager
439	*/
440	public function get_task_manager() {
441	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
442
443	Updraft_Tasks_Activation::check_updates();
444
445	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
446	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
447	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
448
449	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
450	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
451
452	return Updraft_Smush_Manager();
453	}
454
455	/**
456	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
457	*
458	* @returns Boolean
459	*/
460	public static function is_premium() {
461	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
462	$wp_optimize_premium = WP_Optimize_Premium();
463	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
464	}
465	return false;
466	}
467
468	/**
469	* Check if script running on Apache web server. $is_apache is set in wp-includes/vars.php. Also returns true if the server uses litespeed.
470	*
471	* @return bool
472	*/
473	public function is_apache_server() {
474	global $is_apache;
475	return $is_apache;
476	}
477
478	/**
479	* Check if script running on IIS web server.
480	*
481	* @return bool
482	*/
483	public function is_IIS_server() {
484	global $is_IIS, $is_iis7;
485	return $is_IIS \|\| $is_iis7;
486	}
487
488	/**
489	* Check if Apache module or modules active.
490	*
491	* @param string\|array $module - single Apache module name or list of Apache module names.
492	*
493	* @return bool\|null - if null, the result was indeterminate
494	*/
495	public function is_apache_module_loaded($module) {
496	if (!$this->is_apache_server()) return false;
497
498	if (!function_exists('apache_get_modules')) return null;
499
500	$module_loaded = true;
501
502	if (is_array($module)) {
503	foreach ($module as $single_module) {
504	if (!in_array($single_module, apache_get_modules())) {
505	$module_loaded = false;
506	break;
507	}
508	}
509	} else {
510	$module_loaded = in_array($module, apache_get_modules());
511	}
512
513	return $module_loaded;
514	}
515
516	/**
517	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
518	*/
519	public function plugins_loaded() {
520
521	if ($this->does_server_handles_cache()) {
522	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
523
524	// If newly migrated to server that handles cache, disable wpo cache
525	$cache = $this->get_page_cache();
526	if ($cache->is_enabled()) {
527	$cache->disable();
528	}
529	}
530
531	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
532
533	// Run Premium loader if it exists
534	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
535	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
536	}
537
538	// load defaults
539	WP_Optimize()->get_options()->set_default_options();
540
541	// Initialize loggers.
542	$this->setup_loggers();
543
544	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
545	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
546	deactivate_plugins($free_plugin);
547
548	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
549	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
550	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
551
552	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
553	file_put_contents($advanced_cache_filename, '');
554	}
555	}
556
557	// Registers the notice letting the user know it cannot be active if premium is active.
558	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
559	return;
560	}
561
562	// Loads the task manager
563	$this->get_task_manager();
564
565	// Loads the language file.
566	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
567
568	// Load 3rd party plugin compatibilities.
569	$this->load_compatibilities();
570
571	// Load page cache.
572	$this->get_page_cache();
573	$this->init_page_cache();
574
575	// Include minify
576	$this->get_minify();
577	$this->run_updates();
578
579	// We need this here because webp can be unavailable because of server moves
580	// This deletes already converted webp images and original image file when a media is deleted
581	WP_Optimize_WebP_Images::get_instance();
582
583	// Include WebP
584	if (WPO_USE_WEBP_CONVERSION) {
585	$this->get_webp_instance();
586	}
587
588	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
589	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
590	}
591
592	/**
593	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
594	* (e.g. "central" folder)
595	*
596	* @param array $hosts List of plugins having the "central" library integrated into them
597	*
598	* @return array
599	*/
600	public function attach_updraftcentral_host($hosts) {
601	$hosts[] = 'wp-optimize';
602	return $hosts;
603	}
604
605	/**
606	* Filter cache tabs (when it is Kinsta)
607	*
608	* @param array $tabs An array of tabs
609	*
610	* @return array $tabs An array of tabs
611	*/
612	public function filter_cache_tabs($tabs) {
613	unset($tabs['preload']);
614	unset($tabs['advanced']);
615	unset($tabs['gzip']);
616	unset($tabs['settings']);
617	return $tabs;
618	}
619
620	/**
621	* Check whether one of free/Premium is active (whether it is this instance or not)
622	*
623	* @param String $which - 'free' or 'premium'
624	*
625	* @return String\|Boolean - plugin path (if installed) or false if not
626	*/
627	private function is_active($which = 'free') {
628	$active_plugins = $this->get_active_plugins();
629	foreach ($active_plugins as $file) {
630	if ('wp-optimize.php' == basename($file)) {
631	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
632	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
633	}
634	}
635	return false;
636	}
637
638	/**
639	* Gets an array of plugins active on either the current site, or site-wide
640	*
641	* @return Array - a list of plugin paths (relative to the plugin directory)
642	*/
643	private function get_active_plugins() {
644
645	// Gets all active plugins on the current site
646	$active_plugins = get_option('active_plugins');
647
648	if (is_multisite()) {
649	$network_active_plugins = get_site_option('active_sitewide_plugins');
650	if (!empty($network_active_plugins)) {
651	$network_active_plugins = array_keys($network_active_plugins);
652	$active_plugins = array_merge($active_plugins, $network_active_plugins);
653	}
654	}
655
656	return $active_plugins;
657	}
658
659	/**
660	* This function checks whether a specific plugin is installed, and returns information about it
661	*
662	* @param string $name Specify "Plugin Name" to return details about it.
663	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
664	*/
665	public function is_installed($name) {
666
667	// Needed to have the 'get_plugins()' function
668	include_once(ABSPATH.'wp-admin/includes/plugin.php');
669
670	// Gets all plugins available
671	$get_plugins = get_plugins();
672
673	$active_plugins = $this->get_active_plugins();
674
675	$plugin_info = array();
676	$plugin_info['installed'] = false;
677	$plugin_info['active'] = false;
678
679	// Loops around each plugin available.
680	foreach ($get_plugins as $key => $value) {
681	// If the plugin name matches that of the specified name, it will gather details.
682	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
683	$plugin_info['installed'] = true;
684	$plugin_info['name'] = $key;
685	$plugin_info['version'] = $value['Version'];
686	if (in_array($key, $active_plugins)) {
687	$plugin_info['active'] = true;
688	}
689	break;
690	}
691	return $plugin_info;
692	}
693
694	/**
695	* This is a notice to show users that premium is installed
696	*/
697	public function show_admin_notice_premium() {
698	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
699	if (isset($_GET['activate'])) unset($_GET['activate']);
700	}
701
702	/**
703	* Show update to Premium notice for non-premium multisite.
704	*/
705	public function show_multisite_update_to_premium_notice() {
706	if (!is_multisite() \|\| self::is_premium()) return;
707
708	echo '<p><a href="'.$this->premium_version_link.'">'.__('New feature: WP-Optimize Premium can now optimize all sites within a multisite install, not just the main one.', 'wp-optimize').'</a></p>';
709	}
710
711	public function admin_init() {
712	$pagenow = $GLOBALS['pagenow'];
713
714	$this->register_template_directories();
715
716	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
717	$options = $this->get_options();
718
719	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
720
721	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
722	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
723	$installed_for = (time() - $installed);
724	}
725
726	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
727	add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
728	}
729	}
730
731	if ($this->is_wp_smush_installed()) {
732	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
733	}
734	}
735
736	/**
737	* Checks whether the WP Smush plugin is active or not
738	*
739	* @return bool
740	*/
741	private function is_wp_smush_installed() {
742	return is_plugin_active('wp-smushit/wp-smush.php');
743	}
744
745	/**
746	* Remove WPO plugin name from WP Smushit transient value
747	*
748	* @return array $active_plugins
749	*/
750	public function modify_wp_smush_conflict_check($active_plugins) {
751	// This can be boolean value since it is return value of get_transient
752	if (!is_array($active_plugins)) return $active_plugins;
753
754	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
755	unset($active_plugins[$key]);
756	}
757	return $active_plugins;
758	}
759
760	/**
761	* Get the install or update notice instance
762	*
763	* @return WP_Optimize_Install_Or_Update_Notice
764	*/
765	public function get_install_or_update_notice() {
766	static $instance = null;
767	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
768	$instance = new WP_Optimize_Install_Or_Update_Notice();
769	return $instance;
770	}
771
772	/**
773	* Display an admin notice for an upgraded version.
774	*/
775	public function show_admin_notice_upgraded() {
776	$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
777	'is_premium' => WP_Optimize::is_premium()
778	));
779	}
780
781	public function capability_required() {
782	return apply_filters('wp_optimize_capability_required', 'manage_options');
783	}
784
785	/**
786	* Returns array of translations used in javascript code.
787	*
788	* @return array
789	*/
790	public function wpo_js_translations() {
791	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
792	return apply_filters('wpo_js_translations', array(
793	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
794	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
795	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
796	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
797	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
798	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
799	'table_optimization_timeout' => 120000,
800	'add' => __('Add', 'wp-optimize'),
801	'cancel' => __('Cancel', 'wp-optimize'),
802	'cancelling' => __('Cancelling...', 'wp-optimize'),
803	'enable' => __('Enable', 'wp-optimize'),
804	'disable' => __('Disable', 'wp-optimize'),
805	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
806	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
807	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
808	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
809	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
810	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
811	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
812	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
813	'update' => __('Update', 'wp-optimize'),
814	'run_now' => __('Run now', 'wp-optimize'),
815	'starting_preload' => __('Started preload...', 'wp-optimize'),
816	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
817	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
818	'number_of_files' => __('Number of files:', 'wp-optimize'),
819	'toggle_info' => __('Show information', 'wp-optimize'),
820	'delete_file' => __('Delete', 'wp-optimize'),
821	'deleting' => __('Deleting...', 'wp-optimize'),
822	'added_to_list' => __('Added to the list', 'wp-optimize'),
823	'added_notice' => __('The file was added to the list', 'wp-optimize'),
824	'save_notice' => __('Save the changes', 'wp-optimize'),
825	'saving' => __('Saving...', 'wp-optimize'),
826	'clearing_cache' => __('Clearing cache...', 'wp-optimize'),
827	'creating_cache' => __('Creating cache...', 'wp-optimize'),
828	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
829	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
830	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
831	'loading_data' => __('Loading data...', 'wp-optimize'),
832	'spinner_src' => esc_url(admin_url('images/spinner-2x.gif')),
833	'logo_src' => esc_url(WPO_PLUGIN_URL.'images/notices/wp_optimize_logo.png'),
834	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
835	'sites' => $this->get_sites(),
836	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
837	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
838	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
839	'network_site_url' => network_site_url(),
840	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
841	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
842	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
843	'importing' => __('Importing...', 'wp-optimize'),
844	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
845	'exported_on' => __('Which was exported on:', 'wp-optimize'),
846	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
847	'select_destination' => __('Select destination', 'wp-optimize'),
848	'show_information' => __('Show information', 'wp-optimize'),
849	'hide_information' => __('Hide information', 'wp-optimize'),
850	));
851	}
852
853	/**
854	* Manages the admin bar menu for caching (currently page and minify)
855	*/
856	public function cache_admin_bar($wp_admin_bar) {
857
858	$options = $this->get_options();
859	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
860
861	/**
862	* The "purge cache" menu items
863	*
864	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
865	* @param object $wp_admin_bar
866	*/
867	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
868
869	if (empty($menu_items) \|\| !is_array($menu_items)) return;
870
871	$wp_admin_bar->add_menu(array(
872	'id' => 'wpo_purge_cache',
873	'title' => __('Purge cache', 'wp-optimize'),
874	'href' => '#',
875	'meta' => array(
876	'title' => __('Purge cache', 'wp-optimize'),
877	),
878	'parent' => false,
879	));
880
881	foreach ($menu_items as $item) {
882	$wp_admin_bar->add_menu($item);
883	}
884	}
885
886	/**
887	* Add settings link on plugin page
888	*
889	* @param string $links Passing through the URL to be used within the HREF.
890	* @return string Returns the Links.
891	*/
892	public function plugin_settings_link($links) {
893
894	$admin_page_url = $this->get_options()->admin_page_url();
895	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
896
897	if (false == self::is_premium()) {
898	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
899	array_unshift($links, $premium_link);
900	}
901
902	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
903	array_unshift($links, $settings_link);
904
905	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
906	array_unshift($links, $optimize_link);
907	return $links;
908	}
909
910	/**
911	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
912	*
913	* @param string $content String for output to column
914	* @param object $table_info Object with table info.
915	*
916	* @return string
917	*/
918	public function tables_list_additional_column_data($content, $table_info) {
919	if ($table_info->is_needing_repair) {
920	$content .= '<div class="wpo_button_wrap">'
921	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
922	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
923	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
924	. '</div>';
925	}
926
927	// table belongs to plugin.
928	if ($table_info->can_be_removed) {
929	$content .= '<div>'
930	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
931	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
932	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
933	. '</div>';
934	}
935
936	// Add option for MyISAM to InnoDB conversion.
937	if ('MyISAM' == $table_info->Engine) {
938	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
939	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
940	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
941	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
942	. '</div>';
943
944	}
945
946	return $content;
947	}
948
949	/**
950	* Initialize WP-Optimize page cache.
951	*/
952	public function init_page_cache() {
953	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
954	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
955	$this->_cache_init_status = $this->get_page_cache()->enable();
956	}
957	}
958	}
959
960	/**
961	* Get init_page_cache() status.
962	*
963	* @return bool
964	*/
965	public function get_init_page_cache_status() {
966	return $this->_cache_init_status;
967	}
968
969	/**
970	* Schedules cron event based on selected schedule type
971	*
972	* @return void
973	*/
974	public function cron_activate() {
975	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
976
977	$options = $this->get_options();
978
979	if ($options->get_option('schedule') === false) {
980	$options->set_default_options();
981	} else {
982	if ('true' == $options->get_option('schedule')) {
983	if (!wp_next_scheduled('wpo_cron_event2')) {
984	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
985
986	// Backward compatibility
987	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
988
989	$this_time = (86400 * 7);
990
991	switch ($schedule_type) {
992	case "wpo_daily":
993	$this_time = 86400;
994	break;
995
996	case "wpo_weekly":
997	$this_time = (86400 * 7);
998	break;
999
1000	case "wpo_fortnightly":
1001	$this_time = (86400 * 14);
1002	break;
1003
1004	case "wpo_monthly":
1005	$this_time = (86400 * 30);
1006	break;
1007	}
1008
1009	add_action('wpo_cron_event2', array($this, 'cron_action'));
1010	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1011	WP_Optimize()->log('running wp_schedule_event()');
1012	if (is_wp_error($result)) {
1013	$error_msg = $result->get_error_message();
1014	WP_Optimize()->log($error_msg);
1015	WP_Optimize()->log(print_r($result, true));
1016	} else {
1017	WP_Optimize()->log($result);
1018	}
1019	}
1020	}
1021	}
1022	}
1023
1024	/**
1025	* Clears all cron events
1026	*
1027	* @return void
1028	*/
1029	public function wpo_cron_deactivate() {
1030	$cron_jobs = _get_cron_array();
1031	foreach ($cron_jobs as $job) {
1032	foreach (array_keys($job) as $hook) {
1033	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1034	}
1035	}
1036	}
1037
1038	/**
1039	* Scheduler public functions to update schedulers
1040	*
1041	* @param array $schedules An array of schedules being passed.
1042	* @return array An array of schedules being returned.
1043	*/
1044	public function cron_schedules($schedules) {
1045	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1046	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1047	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1048	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1049	return $schedules;
1050	}
1051
1052	/**
1053	* Returns count of overdue cron jobs.
1054	*
1055	* @return integer
1056	*/
1057	public function howmany_overdue_crons() {
1058	$how_many_overdue = 0;
1059	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1060	$crons = _get_cron_array();
1061	if (is_array($crons)) {
1062	$timenow = time();
1063	foreach ($crons as $jt => $job) {
1064	if ($jt < $timenow) {
1065	$how_many_overdue++;
1066	}
1067	}
1068	}
1069	}
1070	return $how_many_overdue;
1071	}
1072
1073	/**
1074	* Run updates on plugin activation.
1075	*/
1076	public function run_updates() {
1077	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1078	WP_Optimize_Updates::check_updates();
1079	}
1080
1081	/**
1082	* Returns warning about overdue crons.
1083	*
1084	* @param int $howmany count of overdue crons
1085	* @return string
1086	*/
1087	public function show_admin_warning_overdue_crons($howmany) {
1088	$ret = '<div class="updated below-h2"><p>';
1089	$ret .= '<strong>'.__('Warning', 'wp-optimize').':</strong> '.sprintf(__('WordPress has a number (%d) of scheduled tasks which are overdue.', 'wp-optimize'), $howmany).' '. __('Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize').' <a href="'.apply_filters('wpoptimize_com_link', "https://getwpo.com/faqs/the-scheduler-in-my-wordpress-installation-is-not-working-what-should-i-do/").'">'.__('Read this page for a guide to possible causes and how to fix it.', 'wp-optimize').'</a>';
1090	$ret .= '</p></div>';
1091	return $ret;
1092	}
1093
1094	private function wp_normalize_path($path) {
1095	// Wp_normalize_path is not present before WP 3.9.
1096	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1097	// Taken from WP 4.6.
1098	$path = str_replace('\\', '/', $path);
1099	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1100	if (':' === substr($path, 1, 1)) {
1101	$path = ucfirst($path);
1102	}
1103	return $path;
1104	}
1105
1106	public function get_templates_dir() {
1107	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1108	}
1109
1110	public function get_templates_url() {
1111	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1112	}
1113
1114	/**
1115	* Return or output view content
1116	*
1117	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1118	* @param Boolean $return_instead_of_echo - what to do with the results
1119	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1120	*
1121	* @return String\|Void
1122	*/
1123	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1124	if ($return_instead_of_echo) ob_start();
1125
1126	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1127	$prefix = $matches[1];
1128	$suffix = $matches[2];
1129	if (isset($this->template_directories[$prefix])) {
1130	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1131	}
1132	}
1133
1134	if (!isset($template_file)) {
1135	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1136	}
1137
1138	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1139
1140	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1141
1142	if (!file_exists($template_file)) {
1143	error_log("WP Optimize: template not found: ".$template_file);
1144	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1145	} else {
1146	extract($extract_these);
1147	// The following are useful variables which can be used in the template.
1148	// They appear as unused, but may be used in the $template_file.
1149	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1150	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1151	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1152	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1153	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1154	include $template_file;
1155	}
1156
1157	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1158
1159	if ($return_instead_of_echo) return ob_get_clean();
1160	}
1161
1162	/**
1163	* Build a list of template directories (stored in self::$template_directories)
1164	*/
1165	private function register_template_directories() {
1166
1167	$template_directories = array();
1168
1169	$templates_dir = $this->get_templates_dir();
1170
1171	if ($dh = opendir($templates_dir)) {
1172	while (($file = readdir($dh)) !== false) {
1173	if ('.' == $file \|\| '..' == $file) continue;
1174	if (is_dir($templates_dir.'/'.$file)) {
1175	$template_directories[$file] = $templates_dir.'/'.$file;
1176	}
1177	}
1178	closedir($dh);
1179	}
1180
1181	// Optimal hook for most extensions to hook into.
1182	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1183
1184	}
1185
1186	/**
1187	* Message to debug
1188	*
1189	* @param string $message Message to insert into the log.
1190	* @param array $context array with variables used in $message like in template,
1191	* for ex.
1192	* $message = 'Hello {message}';
1193	* $context = ['message' => 'world']
1194	* 'Hello world' string will be saved in log.
1195	*/
1196	public function log($message, $context = array()) {
1197	$this->get_logger()->debug($message, $context);
1198	}
1199
1200	/**
1201	* Format Bytes Into KB/MB
1202	*
1203	* @param mixed $bytes Number of bytes to be converted.
1204	* @param integer $decimals the number of decimal digits
1205	* @return integer return the correct format size.
1206	*/
1207	public function format_size($bytes, $decimals = 2) {
1208	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1209
1210	if (1073741824 <= $bytes) {
1211	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1212	} elseif (1048576 <= $bytes) {
1213	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1214	} elseif (1024 <= $bytes) {
1215	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1216	} elseif (1 < $bytes) {
1217	$bytes = $bytes . ' bytes';
1218	} elseif (1 == $bytes) {
1219	$bytes = $bytes . ' byte';
1220	} else {
1221	$bytes = '0 bytes';
1222	}
1223
1224	return $bytes;
1225	}
1226
1227	/**
1228	* Format a timestamp into a juman readable date time
1229	*
1230	* @param int $timestamp
1231	* @return string
1232	*/
1233	public function format_date_time($timestamp) {
1234	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1235	}
1236
1237	/**
1238	* Executed this function on cron event.
1239	*
1240	* @return void
1241	*/
1242	public function cron_action() {
1243
1244	$optimizer = $this->get_optimizer();
1245	$options = $this->get_options();
1246
1247	$this->log('WPO: Starting cron_action()');
1248	$options->update_option('last-optimized', time());
1249	if ('true' == $options->get_option('schedule')) {
1250	$this_options = $options->get_option('auto');
1251
1252	// Currently the output of the optimizations is not saved/used/logged.
1253	$optimizer->do_optimizations($this_options, 'auto');
1254	}
1255
1256	}
1257
1258	/**
1259	* Schedule cron tasks used by plugin.
1260	*
1261	* @return void
1262	*/
1263	public function schedule_plugin_cron_tasks() {
1264	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1265	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1266	}
1267
1268	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1269	}
1270
1271	/**
1272	* Do plugin background tasks.
1273	*
1274	* @return void
1275	*/
1276	public function do_weekly_cron_tasks() {
1277	// add tasks here.
1278	$this->get_db_info()->update_plugin_json();
1279	}
1280
1281	/**
1282	* This will customize a URL with a correct Affiliate link
1283	* This function can be update to suit any URL as longs as the URL is passed
1284	*
1285	* @param String $url - URL to be check to see if it an updraftplus match.
1286	* @param String $text - Text to be entered within the href a tags.
1287	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1288	* @param String\|Array $attrs - Specify the HTML attributes as an array or string. Use the array format for multiple attributes (e.g., array( "class" => "lorem-ipsum", "title" => "Highlighting text" )), and use the string format for a single attribute (e.g., 'class="lorem-ipsum"').
1289	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1290	* @return String\|void
1291	*/
1292	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1293	// Check if the URL is UpdraftPlus.
1294	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1295
1296	// Check if the variable $text is empty (null value included), otherwise assign $html.
1297	$content = empty($text) ? $html : esc_html($text);
1298
1299	// Check if $attrs is an array to convert the attributes into a string line.
1300	$str_attrs = '';
1301	if (is_array($attrs)) {
1302	foreach ($attrs as $attr => $value) {
1303	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1304	}
1305	} else {
1306	// If $attrs is empty, the explode function will only return an empty array.
1307	$attrs = explode('=', $attrs);
1308	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1309	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1310	}
1311
1312	// Check if it is necessary to add a target value if the url is external
1313	$is_external_url = $this->is_external_url($url);
1314	if ($is_external_url) {
1315	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1316	$str_attrs .= ' target="_blank"';
1317	}
1318
1319	$result = sprintf(
1320	'<a href="%s" %s>%s</a>',
1321	esc_url($url),
1322	$str_attrs,
1323	$content
1324	);
1325
1326	if ($return_instead_of_echo) return $result;
1327	echo $result;
1328	}
1329
1330	/**
1331	* Check if a URL is external
1332	*
1333	* @param string $url
1334	* @return string
1335	*/
1336	public function is_external_url($url) {
1337	if (empty($url)) {
1338	return false;
1339	}
1340
1341	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1342	$url = wp_parse_url($url, PHP_URL_HOST);
1343
1344	// Compare the domains and return true if they are different
1345	return $current_domain !== $url;
1346	}
1347
1348	/**
1349	* Get an URL with an eventual affiliate ID
1350	*
1351	* @param string $url
1352	* @return string
1353	*/
1354	public function maybe_add_affiliate_params($url) {
1355	// Check if the URL is UpdraftPlus.
1356	if (false !== strpos($url, '//updraftplus.com')) {
1357	// Set URL with Affiliate ID.
1358	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1359
1360	// Apply filters.
1361	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1362	}
1363	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1364	}
1365
1366	/**
1367	* Setup WPO logger(s)
1368	*/
1369	public function setup_loggers() {
1370
1371	$logger = $this->get_logger();
1372	$loggers = $this->wpo_loggers();
1373
1374	if (!empty($loggers)) {
1375	foreach ($loggers as $_logger) {
1376	$logger->add_logger($_logger);
1377	}
1378	}
1379
1380	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1381	}
1382
1383	/**
1384	* Run logger actions after all optimizations done
1385	*/
1386	public function after_optimizations_logger_action() {
1387	$loggers = $this->get_logger()->get_loggers();
1388	if (!empty($loggers)) {
1389	foreach ($loggers as $logger) {
1390	if (is_a($logger, 'Updraft_Email_Logger')) {
1391	$logger->flush_log();
1392	}
1393	}
1394	}
1395	}
1396
1397	/**
1398	* Returns list of WPO loggers instances
1399	* Apply filter wp_optimize_loggers
1400	*
1401	* @return array
1402	*/
1403	public function wpo_loggers() {
1404
1405	$loggers = array();
1406	$loggers_classes_by_id = array();
1407	$options_keys = array();
1408
1409	$loggers_classes = $this->get_loggers_classes();
1410
1411	foreach ($loggers_classes as $logger_class => $source) {
1412	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1413	}
1414
1415	$options = $this->get_options();
1416
1417	$saved_loggers = $options->get_option('logging');
1418	$logger_additional_options = $options->get_option('logging-additional');
1419
1420	// create loggers classes instances.
1421	if (!empty($saved_loggers)) {
1422	// check for previous version options format.
1423	$keys = array_keys($saved_loggers);
1424
1425	// if options stored in old format then reformat it.
1426	if (false == is_numeric($keys[0])) {
1427	$_saved_loggers = array();
1428	foreach ($saved_loggers as $logger_id => $enabled) {
1429	if ($enabled) {
1430	$_saved_loggers[] = $logger_id;
1431	}
1432	}
1433
1434	// fill email with admin.
1435	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1436	$logger_additional_options['updraft_email_logger'] = array(
1437	get_option('admin_email')
1438	);
1439	}
1440
1441	$saved_loggers = $_saved_loggers;
1442	}
1443
1444	foreach ($saved_loggers as $i => $logger_id) {
1445
1446	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1447
1448	$logger_class = $loggers_classes_by_id[$logger_id];
1449
1450	$logger = new $logger_class();
1451
1452	$logger_options = $logger->get_options_list();
1453
1454	if (!empty($logger_options)) {
1455	foreach (array_keys($logger_options) as $option_name) {
1456	if (array_key_exists($option_name, $options_keys)) {
1457	$options_keys[$option_name]++;
1458	} else {
1459	$options_keys[$option_name] = 0;
1460	}
1461
1462	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1463
1464	// if options in old format then get correct value.
1465	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1466	$option_value = array_shift($logger_additional_options[$logger_id]);
1467	}
1468
1469	$logger->set_option($option_name, $option_value);
1470	}
1471	}
1472
1473	// check if logger is active.
1474	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1475
1476	if ($active) {
1477	$logger->enable();
1478	} else {
1479	$logger->disable();
1480	}
1481
1482	$loggers[] = $logger;
1483	}
1484	}
1485
1486	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1487
1488	return $loggers;
1489	}
1490
1491	/**
1492	* Returns associative array with logger class name in a key and path to class file in a value.
1493	*
1494	* @return array
1495	*/
1496	public function get_loggers_classes() {
1497	$loggers_classes = array(
1498	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1499	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1500	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1501	);
1502
1503	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1504
1505	if (!empty($loggers_classes)) {
1506	foreach ($loggers_classes as $logger_class => $logger_file) {
1507	if (!class_exists($logger_class)) {
1508	if (is_file($logger_file)) {
1509	include_once($logger_file);
1510	}
1511	}
1512	}
1513	}
1514
1515	return $loggers_classes;
1516	}
1517
1518	/**
1519	* Returns information about all loggers classes.
1520	*
1521	* @return array
1522	*/
1523	public function get_loggers_classes_info() {
1524	$loggers_classes = $this->get_loggers_classes();
1525
1526	$loggers_classes_info = array();
1527
1528	if (!empty($loggers_classes)) {
1529	foreach (array_keys($loggers_classes) as $logger_class_name) {
1530
1531	if (!class_exists($logger_class_name)) continue;
1532
1533	$logger_id = strtolower($logger_class_name);
1534	$logger_class = new $logger_class_name();
1535
1536	$loggers_classes_info[$logger_id] = array(
1537	'description' => $logger_class->get_description(),
1538	'available' => $logger_class->is_available(),
1539	'allow_multiple' => $logger_class->is_allow_multiple(),
1540	'options' => $logger_class->get_options_list()
1541	);
1542	}
1543	}
1544
1545	return $loggers_classes_info;
1546	}
1547
1548	/**
1549	* Returns true if optimization works in multisite mode
1550	*
1551	* @return boolean
1552	*/
1553	public function is_multisite_mode() {
1554	return (is_multisite() && self::is_premium());
1555	}
1556
1557	/**
1558	* Returns true if current user can run optimizations.
1559	*
1560	* @return bool
1561	*/
1562	public function can_run_optimizations() {
1563	// we don't check permissions for cron jobs.
1564	if (defined('DOING_CRON') && DOING_CRON) return true;
1565
1566	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1567	return true;
1568	}
1569
1570	/**
1571	* Returns true if current user can manage plugin options.
1572	*
1573	* @return bool
1574	*/
1575	public function can_manage_options() {
1576	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1577	return true;
1578	}
1579
1580	/**
1581	* Returns list of all sites in multisite
1582	*
1583	* @return array
1584	*/
1585	public function get_sites() {
1586	$sites = array();
1587	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1588	if (function_exists('get_sites')) {
1589	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1590	} elseif (function_exists('wp_get_sites')) {
1591	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1592	}
1593	return $sites;
1594	}
1595
1596	/**
1597	* Returns script memory limit in megabytes.
1598	*
1599	* @param bool $memory_limit
1600	* @return int
1601	*/
1602	public function get_memory_limit($memory_limit = false) {
1603	// Returns in megabytes
1604	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1605	$memory_limit = rtrim($memory_limit);
1606
1607	return $this->return_bytes($memory_limit);
1608	}
1609
1610	/**
1611	* Returns free memory in bytes.
1612	*
1613	* @return int
1614	*/
1615	public function get_free_memory() {
1616	return $this->get_memory_limit() - memory_get_usage();
1617	}
1618
1619	/**
1620	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1621	*
1622	* @return int memory limit in bytes.
1623	*/
1624	public function get_script_memory_limit() {
1625	$memory_limit = $this->get_memory_limit();
1626
1627	if (defined('WP_MAX_MEMORY_LIMIT')) {
1628	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1629
1630	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1631	$memory_limit = $wp_memory_limit;
1632	}
1633	}
1634
1635	return $memory_limit;
1636	}
1637
1638	/**
1639	* Returns max packet size for database.
1640	*
1641	* @return int\|string
1642	*/
1643	public function get_max_packet_size() {
1644	global $wpdb;
1645	static $mp = 0;
1646
1647	if ($mp > 0) return $mp;
1648
1649	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1650	// Default to 1MB
1651	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1652	// 32MB
1653	if ($mp < 33554432) {
1654	$save = $wpdb->show_errors(false);
1655	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1656	$wpdb->show_errors($save);
1657
1658	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1659	// Default to 1MB
1660	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1661	}
1662
1663	return $mp;
1664	}
1665
1666	/**
1667	* Converts shorthand memory notation value to bytes.
1668	* From http://php.net/manual/en/function.ini-get.php
1669	*
1670	* @param string $val shorthand memory notation value.
1671	*/
1672	public function return_bytes($val) {
1673	$val = trim($val);
1674	$last = strtolower($val[strlen($val)-1]);
1675	$val = (int) $val;
1676	switch ($last) {
1677	case 'g':
1678	$val *= 1024;
1679	// no break
1680	case 'm':
1681	$val *= 1024;
1682	// no break
1683	case 'k':
1684	$val *= 1024;
1685	}
1686
1687	return $val;
1688	}
1689
1690	/**
1691	* Log fatal errors to defined log destinations.
1692	*/
1693	public function log_fatal_errors() {
1694	$last_error = error_get_last();
1695
1696	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1697	$this->get_logger()->critical($last_error['message']);
1698	}
1699	}
1700
1701	/**
1702	* Close browser connection and continue script work. - Taken from UpdraftPlus
1703	*
1704	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1705	* @return void
1706	*/
1707	public function close_browser_connection($txt = '') {
1708	if (!headers_sent()) {
1709	// Close browser connection so that it can resume AJAX polling
1710	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1711	header('Content-Type: application/json');
1712	header('Connection: close');
1713	header('Content-Encoding: none');
1714	}
1715
1716	if (session_id()) session_write_close();
1717	echo "\r\n\r\n";
1718	echo $txt;
1719	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1720	$ob_level = ob_get_level();
1721	while ($ob_level > 0) {
1722	ob_end_flush();
1723	$ob_level--;
1724	}
1725	flush();
1726	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1727	if (function_exists('litespeed_finish_request')) litespeed_finish_request();
1728	}
1729
1730	/**
1731	* Try to change PHP script time limit.
1732	*/
1733	public function change_time_limit() {
1734	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1735
1736	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1737	}
1738
1739	/**
1740	* Does the request come from UDC
1741	*
1742	* @return boolean
1743	*/
1744	public function is_updraft_central_request() {
1745	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1746	}
1747
1748	/**
1749	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1750	*
1751	* @return boolean
1752	*/
1753	public function template_should_include_data() {
1754	/**
1755	* Filters wether data should be included in certain templates or not.
1756	*/
1757	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1758	}
1759
1760	/**
1761	* Load the templates for the modal window
1762	*/
1763	public function load_modal_template() {
1764	$this->include_template('modal.php');
1765	}
1766
1767	/**
1768	* Delete transients and semaphores data from options table.
1769	*/
1770	public function delete_transients_and_semaphores() {
1771	global $wpdb;
1772
1773	$masks = array(
1774	'updraft_locked_wpo_%',
1775	'updraft_unlocked_wpo_%',
1776	'updraft_last_lock_time_wpo_%',
1777	'updraft_semaphore_wpo_%',
1778	'wpo_locked_%',
1779	'wpo_unlocked_%',
1780	'wpo_last_lock_time_%',
1781	'wpo_semaphore_%',
1782	'_transient_timeout_wpo_%',
1783	'_transient_wpo_%',
1784	'updraft_lock_wpo_%',
1785	'wpo_last_scheduled_%',
1786	);
1787
1788	$where_parts = array();
1789	foreach ($masks as $mask) {
1790	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1791	}
1792
1793	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1794	}
1795
1796	/**
1797	* Prevents bots from indexing plugins list
1798	*/
1799	public function robots_txt($output) {
1800	$upload_dir = wp_upload_dir();
1801	$path = parse_url($upload_dir['baseurl']);
1802	$output .= "\nUser-agent: *";
1803	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo/wpo-plugins-tables-list.json\n";
1804	return $output;
1805	}
1806
1807	/**
1808	* Returns desired enqueue version string
1809	*
1810	* @return string Enqueue version as string
1811	*/
1812	public function get_enqueue_version() {
1813	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1814	}
1815
1816	/**
1817	* Returns script suffix string
1818	*
1819	* @return string empty or `.min` suffix string
1820	*/
1821	public function get_min_or_not_string() {
1822	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1823	}
1824
1825	/**
1826	* Returns script suffix string with WPO_VERSION
1827	*
1828	* @return string empty or min suffix with wpo_version string
1829	*/
1830	public function get_min_or_not_internal_string() {
1831	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1832	}
1833
1834	/**
1835	* Instantiate Ajax handling class
1836	*/
1837	private function load_ajax_handler() {
1838	WPO_Ajax::get_instance();
1839	}
1840	}
1841
1842	/**
1843	* Unschedule specific tasks:
1844	* `wpo_cron_event2` => DB optimizations
1845	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
1846	*
1847	* @return void
1848	*/
1849	function wpo_cron_deactivate() {
1850	WP_Optimize()->log('running wpo_cron_deactivate()');
1851	wp_clear_scheduled_hook('wpo_cron_event2');
1852	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1853	}
1854
1855	function WP_Optimize() {
1856	return WP_Optimize::instance();
1857	}
1858
1859	endif;
1860
1861	$GLOBALS['wp_optimize'] = WP_Optimize();
1862