wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.2.20, 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: 3.2.20
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', '3.2.20');
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 $_instance = null;
34
35	/**
36	* Class constructor
37	*/
38	public function __construct() {
39	spl_autoload_register(array($this, 'loader'));
40
41	// Checks if premium is installed along with plugins needed.
42	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
43
44	register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
45	register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
46	register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
47
48	$this->load_admin();
49	add_action('admin_init', array($this, 'admin_init'));
50	add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);
51
52	add_action('init', array($this, 'schedule_plugin_cron_tasks'));
53
54	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
55	add_action('wpo_cron_event2', array($this, 'cron_action'));
56	add_filter('cron_schedules', array($this, 'cron_schedules'));
57
58	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
59
60	if (!self::is_premium()) {
61	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
62	}
63
64	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
65
66	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
67
68	$this->load_ajax_handler();
69
70	// Show update to Premium notice for non-premium multisite.
71	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
72
73	// Action column (show repair button if need).
74	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
75
76	/**
77	* Add action for display Images > Compress images tab.
78	*/
79	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
80
81	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
82
83	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
84
85	register_shutdown_function(array($this, 'log_fatal_errors'));
86
87	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
88
89	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
90
91	$import_done_hooks = array(
92	'import_end', // wordpress importer
93	'pmxi_after_xml_import', // wp all import
94	);
95
96	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
97
98	foreach ($db_update_hooks as $hook) {
99	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
100	}
101	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
102	}
103
104	/**
105	* Auto-loads classes.
106	*
107	* @param string $class_name The name of the class.
108	*/
109	private function loader($class_name) {
110	$dirs = $this->get_class_directories();
111
112	foreach ($dirs as $dir) {
113	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
114	if (file_exists($class_file)) {
115	require_once($class_file);
116	return;
117	}
118	}
119	}
120
121	/**
122	* Returns an array of class directories
123	*
124	* @return array
125	*/
126	private function get_class_directories() {
127	return array(
128	'cache',
129	'compatibility',
130	'includes',
131	'minify',
132	'optimizations',
133	'webp',
134	);
135	}
136
137	/**
138	* Initialize Admin class to load admin UI
139	*/
140	private function load_admin() {
141	$this->get_admin_instance();
142	}
143
144	/**
145	* Returns Admin class instance
146	*
147	* @return WP_Optimize_Admin
148	*/
149	public function get_admin_instance() {
150	return WP_Optimize_Admin::instance();
151	}
152
153	/**
154	* Detect when an active plugin or theme is updated, and trigger an action
155	*
156	* @param object $upgrader_object
157	* @param array $options
158	* @return void
159	*/
160	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
161	if (empty($options) \|\| !isset($options['type'])) return;
162
163	$should_purge_cache = false;
164	$skin = $upgrader_object->skin;
165	if ('plugin' === $options['type']) {
166	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
167	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
168	$should_purge_cache = true;
169	}
170	} elseif ('theme' === $options['type']) {
171	$active_theme = get_stylesheet();
172	$parent_theme = get_template();
173	// A theme is updated using the upload system
174	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
175	$updated_theme = $upgrader_object->result['destination_name'];
176	// Check if the theme is in use
177	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
178	$should_purge_cache = true;
179	}
180	// A theme is updated using the classic update system
181	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
182	// Check if the theme is in use
183	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
184	$should_purge_cache = true;
185	}
186	}
187	}
188
189	/**
190	* Action executed when an active theme or plugin was updated
191	*/
192	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
193
194	}
195
196	/**
197	* Sets a flag to indicate an import action is done, if needed
198	*/
199	public function maybe_schedule_update_record_count_event() {
200	if (!wp_next_scheduled('wpo_update_record_count_event')) {
201	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
202	}
203	}
204
205	public function admin_page_wpo_images_smush() {
206	$options = Updraft_Smush_Manager()->get_smush_options();
207	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
208	$sites = WP_Optimize()->get_sites();
209	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion()));
210	}
211
212	public static function instance() {
213	if (empty(self::$_instance)) {
214	self::$_instance = new self();
215	}
216	return self::$_instance;
217	}
218
219	public function get_optimizer() {
220	return WP_Optimizer::instance();
221	}
222
223	/**
224	* Adds 3rd party plugin compatibilities.
225	*/
226	public function load_compatibilities() {
227	WPO_Polylang_Compatibility::instance();
228	WPO_Page_Builder_Compatibility::instance();
229	WPO_Custom_Permalink_Compatibility::instance();
230
231	do_action('wpo_load_compatibilities');
232	}
233
234	/**
235	* Get and instantiate WP_Optimize_Minify
236	*
237	* @return WP_Optimize_Minify
238	*/
239	public function get_minify() {
240	return WP_Optimize_Minify::instance();
241	}
242
243	public function get_options() {
244	return WP_Optimize_Options::instance();
245	}
246
247	public function get_notices() {
248	return WP_Optimize_Notices::instance();
249	}
250
251	/**
252	* Returns instance if WPO_Page_Cache class.
253	*
254	* @return WPO_Page_Cache
255	*/
256	public function get_page_cache() {
257	return WPO_Page_Cache::instance();
258	}
259
260	/**
261	* Returns instance if WP_Optimize_WebP class.
262	*
263	* @return WP_Optimize_WebP
264	*/
265	public function get_webp_instance() {
266	return WP_Optimize_WebP::get_instance();
267	}
268
269	/**
270	* Detects if the platform is Kinsta or not
271	*
272	* @return bool Returns true if it is Kinsta platform, otherwise returns false
273	*/
274	private function is_kinsta() {
275	return isset($_SERVER['KINSTA_CACHE_ZONE']);
276	}
277
278	/**
279	* Detects whether the server handles cache. eg. Nginx cache
280	*/
281	public function does_server_handles_cache() {
282	return $this->is_kinsta();
283	}
284
285	/**
286	* Detects whether the server supports table optimization.
287	*
288	* Some servers prevent table optimization
289	* because InnoDB engine does not optimize table
290	* instead it drops tables and recreate them
291	* which results in elevated disk write operations
292	*/
293	public function does_server_allows_table_optimization() {
294	return !$this->is_kinsta();
295	}
296
297	/**
298	* Detects whether the server supports local webp conversion tools
299	*/
300	private function does_server_allows_local_webp_conversion() {
301	return !$this->is_kinsta();
302	}
303
304	/**
305	* Create instance of WP_Optimize_Browser_Cache.
306	*
307	* @return WP_Optimize_Browser_Cache
308	*/
309	public function get_browser_cache() {
310	return WP_Optimize_Browser_Cache::instance();
311	}
312
313	/**
314	* Returns WP_Optimize_Database_Information instance.
315	*
316	* @return WP_Optimize_Database_Information
317	*/
318	public function get_db_info() {
319	return WP_Optimize_Database_Information::instance();
320	}
321
322	/**
323	* Returns instance of WP_Optimize_Gzip_Compression.
324	*
325	* @return WP_Optimize_Gzip_Compression
326	*/
327	public function get_gzip_compression() {
328	return WP_Optimize_Gzip_Compression::instance();
329	}
330
331	/**
332	* Create instance of WP_Optimize_Htaccess.
333	*
334	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
335	* @return WP_Optimize_Htaccess
336	*/
337	public static function get_htaccess($htaccess_file = '') {
338	return new WP_Optimize_Htaccess($htaccess_file);
339	}
340
341	/**
342	* Return instance of Updraft_Logger
343	*
344	* @return Updraft_Logger
345	*/
346	public function get_logger() {
347	return Updraft_Logger::instance();
348	}
349
350	/**
351	* Check if the current page belongs to WP-Optimize.
352	*
353	* @return bool
354	*/
355	public function is_wpo_page() {
356	$current_screen = get_current_screen();
357
358	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
359	}
360
361	/**
362	* Enqueue scripts and styles on WP-Optimize pages.
363	*/
364	public function admin_enqueue_scripts() {
365	$enqueue_version = $this->get_enqueue_version();
366	$min_or_not = $this->get_min_or_not_string();
367	$min_or_not_internal = $this->get_min_or_not_internal_string();
368
369	// Register or enqueue common scripts
370	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
371	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
372	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
373
374	// load scripts and styles only on WP-Optimize pages.
375	if (!$this->is_wpo_page()) return;
376
377	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
378
379	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
380	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
381	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js'), $enqueue_version);
382	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js'), $enqueue_version);
383	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
384	// Using tablesorter to help with organising the DB size on Table Information
385	// https://github.com/Mottie/tablesorter
386	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
387
388	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
389
390	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
391
392	$js_variables = $this->wpo_js_translations();
393	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
394
395	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
396
397	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
398	}
399
400	/**
401	* Enqueue any required front-end scripts
402	*
403	* @return void
404	*/
405	public function frontend_enqueue_scripts() {
406	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
407	$enqueue_version = $this->get_enqueue_version();
408	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
409
410	// Register or enqueue common scripts
411	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
412	}
413
414	/**
415	* Load Task Manager
416	*/
417	public function get_task_manager() {
418	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
419
420	Updraft_Tasks_Activation::check_updates();
421
422	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
423	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
424	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
425
426	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
427	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
428
429	return Updraft_Smush_Manager();
430	}
431
432	/**
433	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
434	*
435	* @returns Boolean
436	*/
437	public static function is_premium() {
438	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
439	$wp_optimize_premium = WP_Optimize_Premium();
440	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
441	}
442	return false;
443	}
444
445	/**
446	* 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.
447	*
448	* @return bool
449	*/
450	public function is_apache_server() {
451	global $is_apache;
452	return $is_apache;
453	}
454
455	/**
456	* Check if script running on IIS web server.
457	*
458	* @return bool
459	*/
460	public function is_IIS_server() {
461	global $is_IIS, $is_iis7;
462	return $is_IIS \|\| $is_iis7;
463	}
464
465	/**
466	* Check if Apache module or modules active.
467	*
468	* @param string\|array $module - single Apache module name or list of Apache module names.
469	*
470	* @return bool\|null - if null, the result was indeterminate
471	*/
472	public function is_apache_module_loaded($module) {
473	if (!$this->is_apache_server()) return false;
474
475	if (!function_exists('apache_get_modules')) return null;
476
477	$module_loaded = true;
478
479	if (is_array($module)) {
480	foreach ($module as $single_module) {
481	if (!in_array($single_module, apache_get_modules())) {
482	$module_loaded = false;
483	break;
484	}
485	}
486	} else {
487	$module_loaded = in_array($module, apache_get_modules());
488	}
489
490	return $module_loaded;
491	}
492
493	/**
494	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
495	*/
496	public function plugins_loaded() {
497
498	if ($this->does_server_handles_cache()) {
499	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
500
501	// If newly migrated to server that handles cache, disable wpo cache
502	$cache = $this->get_page_cache();
503	if ($cache->is_enabled()) {
504	$cache->disable();
505	}
506	}
507
508	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
509
510	// Run Premium loader if it exists
511	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
512	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
513	}
514
515	// load defaults
516	WP_Optimize()->get_options()->set_default_options();
517
518	// Initialize loggers.
519	$this->setup_loggers();
520
521	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
522	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
523	deactivate_plugins($free_plugin);
524
525	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
526	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
527	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
528
529	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
530	file_put_contents($advanced_cache_filename, '');
531	}
532	}
533
534	// Registers the notice letting the user know it cannot be active if premium is active.
535	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
536	return;
537	}
538
539	// Loads the task manager
540	$this->get_task_manager();
541
542	// Loads the language file.
543	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
544
545	// Load 3rd party plugin compatibilities.
546	$this->load_compatibilities();
547
548	// Load page cache.
549	$this->get_page_cache();
550	$this->init_page_cache();
551
552	// Include minify
553	$this->get_minify();
554	$this->run_updates();
555
556	// We need this here because webp can be unavailable because of server moves
557	// This deletes already converted webp images and original image file when a media is deleted
558	WP_Optimize_WebP_Images::get_instance();
559
560	// Include WebP
561	if (WP_Optimize_WebP::is_shell_functions_available() && WPO_USE_WEBP_CONVERSION) {
562	$this->get_webp_instance();
563	}
564
565	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
566	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
567	}
568
569	/**
570	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
571	* (e.g. "central" folder)
572	*
573	* @param array $hosts List of plugins having the "central" library integrated into them
574	*
575	* @return array
576	*/
577	public function attach_updraftcentral_host($hosts) {
578	$hosts[] = 'wp-optimize';
579	return $hosts;
580	}
581
582	/**
583	* Filter cache tabs (when it is Kinsta)
584	*
585	* @param array $tabs An array of tabs
586	*
587	* @return array $tabs An array of tabs
588	*/
589	public function filter_cache_tabs($tabs) {
590	unset($tabs['preload']);
591	unset($tabs['advanced']);
592	unset($tabs['gzip']);
593	unset($tabs['settings']);
594	return $tabs;
595	}
596
597	/**
598	* Check whether one of free/Premium is active (whether it is this instance or not)
599	*
600	* @param String $which - 'free' or 'premium'
601	*
602	* @return String\|Boolean - plugin path (if installed) or false if not
603	*/
604	private function is_active($which = 'free') {
605	$active_plugins = $this->get_active_plugins();
606	foreach ($active_plugins as $file) {
607	if ('wp-optimize.php' == basename($file)) {
608	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
609	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
610	}
611	}
612	return false;
613	}
614
615	/**
616	* Gets an array of plugins active on either the current site, or site-wide
617	*
618	* @return Array - a list of plugin paths (relative to the plugin directory)
619	*/
620	private function get_active_plugins() {
621
622	// Gets all active plugins on the current site
623	$active_plugins = get_option('active_plugins');
624
625	if (is_multisite()) {
626	$network_active_plugins = get_site_option('active_sitewide_plugins');
627	if (!empty($network_active_plugins)) {
628	$network_active_plugins = array_keys($network_active_plugins);
629	$active_plugins = array_merge($active_plugins, $network_active_plugins);
630	}
631	}
632
633	return $active_plugins;
634	}
635
636	/**
637	* This function checks whether a specific plugin is installed, and returns information about it
638	*
639	* @param string $name Specify "Plugin Name" to return details about it.
640	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
641	*/
642	public function is_installed($name) {
643
644	// Needed to have the 'get_plugins()' function
645	include_once(ABSPATH.'wp-admin/includes/plugin.php');
646
647	// Gets all plugins available
648	$get_plugins = get_plugins();
649
650	$active_plugins = $this->get_active_plugins();
651
652	$plugin_info = array();
653	$plugin_info['installed'] = false;
654	$plugin_info['active'] = false;
655
656	// Loops around each plugin available.
657	foreach ($get_plugins as $key => $value) {
658	// If the plugin name matches that of the specified name, it will gather details.
659	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
660	$plugin_info['installed'] = true;
661	$plugin_info['name'] = $key;
662	$plugin_info['version'] = $value['Version'];
663	if (in_array($key, $active_plugins)) {
664	$plugin_info['active'] = true;
665	}
666	break;
667	}
668	return $plugin_info;
669	}
670
671	/**
672	* This is a notice to show users that premium is installed
673	*/
674	public function show_admin_notice_premium() {
675	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
676	if (isset($_GET['activate'])) unset($_GET['activate']);
677	}
678
679	/**
680	* Show update to Premium notice for non-premium multisite.
681	*/
682	public function show_multisite_update_to_premium_notice() {
683	if (!is_multisite() \|\| self::is_premium()) return;
684
685	echo '<p><a href="'.$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>';
686	}
687
688	public function admin_init() {
689	$pagenow = $GLOBALS['pagenow'];
690
691	$this->register_template_directories();
692
693	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
694	$options = $this->get_options();
695
696	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
697
698	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
699	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
700	$installed_for = (time() - $installed);
701	}
702
703	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
704	add_action('all_admin_notices', array($this, 'show_admin_notice_upgradead'));
705	}
706	}
707
708	if ($this->is_wp_smush_installed()) {
709	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
710	}
711	}
712
713	/**
714	* Checks whether the WP Smush plugin is active or not
715	*
716	* @return bool
717	*/
718	private function is_wp_smush_installed() {
719	return is_plugin_active('wp-smushit/wp-smush.php');
720	}
721
722	/**
723	* Remove WPO plugin name from WP Smushit transient value
724	*
725	* @return array $active_plugins
726	*/
727	public function modify_wp_smush_conflict_check($active_plugins) {
728	// This can be boolean value since it is return value of get_transient
729	if (!is_array($active_plugins)) return $active_plugins;
730
731	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
732	unset($active_plugins[$key]);
733	}
734	return $active_plugins;
735	}
736
737	/**
738	* Get the install or update notice instance
739	*
740	* @return WP_Optimize_Install_Or_Update_Notice
741	*/
742	public function get_install_or_update_notice() {
743	static $instance = null;
744	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
745	$instance = new WP_Optimize_Install_Or_Update_Notice();
746	return $instance;
747	}
748
749	public function show_admin_notice_upgradead() {
750	$this->include_template('notices/thanks-for-using-main-dash.php');
751	}
752
753	public function capability_required() {
754	return apply_filters('wp_optimize_capability_required', 'manage_options');
755	}
756
757	/**
758	* Returns array of translations used in javascript code.
759	*
760	* @return array
761	*/
762	public function wpo_js_translations() {
763	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
764	return apply_filters('wpo_js_translations', array(
765	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
766	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
767	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
768	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
769	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
770	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
771	'table_optimization_timeout' => 120000,
772	'add' => __('Add', 'wp-optimize'),
773	'cancel' => __('Cancel', 'wp-optimize'),
774	'cancelling' => __('Cancelling...', 'wp-optimize'),
775	'enable' => __('Enable', 'wp-optimize'),
776	'disable' => __('Disable', 'wp-optimize'),
777	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
778	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
779	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
780	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
781	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
782	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
783	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
784	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
785	'update' => __('Update', 'wp-optimize'),
786	'run_now' => __('Run now', 'wp-optimize'),
787	'starting_preload' => __('Started preload...', 'wp-optimize'),
788	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
789	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
790	'number_of_files' => __('Number of files:', 'wp-optimize'),
791	'toggle_info' => __('Show information', 'wp-optimize'),
792	'delete_file' => __('Delete', 'wp-optimize'),
793	'added_to_list' => __('Added to the list', 'wp-optimize'),
794	'added_notice' => __('The file was added to the list', 'wp-optimize'),
795	'save_notice' => __('Save the changes', 'wp-optimize'),
796	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
797	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
798	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
799	'loading_data' => __('Loading data...', 'wp-optimize'),
800	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
801	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
802	'sites' => $this->get_sites(),
803	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
804	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
805	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
806	'network_site_url' => network_site_url(),
807	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
808	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
809	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
810	'importing' => __('Importing...', 'wp-optimize'),
811	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
812	'exported_on' => __('Which was exported on:', 'wp-optimize'),
813	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
814	'select_destination' => __('Select destination', 'wp-optimize'),
815	));
816	}
817
818	/**
819	* Manages the admin bar menu for caching (currently page and minify)
820	*/
821	public function cache_admin_bar($wp_admin_bar) {
822
823	$options = $this->get_options();
824	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
825
826	/**
827	* The "purge cache" menu items
828	*
829	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
830	* @param object $wp_admin_bar
831	*/
832	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
833
834	if (empty($menu_items) \|\| !is_array($menu_items)) return;
835
836	$wp_admin_bar->add_menu(array(
837	'id' => 'wpo_purge_cache',
838	'title' => __('Purge cache', 'wp-optimize'),
839	'href' => '#',
840	'meta' => array(
841	'title' => __('Purge cache', 'wp-optimize'),
842	),
843	'parent' => false,
844	));
845
846	foreach ($menu_items as $item) {
847	$wp_admin_bar->add_menu($item);
848	}
849	}
850
851	/**
852	* Add settings link on plugin page
853	*
854	* @param string $links Passing through the URL to be used within the HREF.
855	* @return string Returns the Links.
856	*/
857	public function plugin_settings_link($links) {
858
859	$admin_page_url = $this->get_options()->admin_page_url();
860	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
861
862	if (false == self::is_premium()) {
863	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
864	array_unshift($links, $premium_link);
865	}
866
867	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
868	array_unshift($links, $settings_link);
869
870	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
871	array_unshift($links, $optimize_link);
872	return $links;
873	}
874
875	/**
876	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
877	*
878	* @param string $content String for output to column
879	* @param object $table_info Object with table info.
880	*
881	* @return string
882	*/
883	public function tables_list_additional_column_data($content, $table_info) {
884	if ($table_info->is_needing_repair) {
885	$content .= '<div class="wpo_button_wrap">'
886	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
887	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
888	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
889	. '</div>';
890	}
891
892	// table belongs to plugin.
893	if ($table_info->can_be_removed) {
894	$content .= '<div>'
895	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
896	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
897	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
898	. '</div>';
899	}
900
901	// Add option for MyISAM to InnoDB conversion.
902	if ('MyISAM' == $table_info->Engine) {
903	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
904	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
905	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
906	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
907	. '</div>';
908
909	}
910
911	return $content;
912	}
913
914	/**
915	* Initialize WP-Optimize page cache.
916	*/
917	public function init_page_cache() {
918	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
919	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
920	$this->get_page_cache()->enable();
921	}
922	}
923	}
924
925	/**
926	* Schedules cron event based on selected schedule type
927	*
928	* @return void
929	*/
930	public function cron_activate() {
931	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
932
933	$options = $this->get_options();
934
935	if ($options->get_option('schedule') === false) {
936	$options->set_default_options();
937	} else {
938	if ('true' == $options->get_option('schedule')) {
939	if (!wp_next_scheduled('wpo_cron_event2')) {
940	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
941
942	// Backward compatibility
943	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
944
945	$this_time = (86400 * 7);
946
947	switch ($schedule_type) {
948	case "wpo_daily":
949	$this_time = 86400;
950	break;
951
952	case "wpo_weekly":
953	$this_time = (86400 * 7);
954	break;
955
956	case "wpo_fortnightly":
957	$this_time = (86400 * 14);
958	break;
959
960	case "wpo_monthly":
961	$this_time = (86400 * 30);
962	break;
963	}
964
965	add_action('wpo_cron_event2', array($this, 'cron_action'));
966	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
967	WP_Optimize()->log('running wp_schedule_event()');
968	if (is_wp_error($result)) {
969	$error_msg = $result->get_error_message();
970	WP_Optimize()->log($error_msg);
971	WP_Optimize()->log(print_r($result, true));
972	} else {
973	WP_Optimize()->log($result);
974	}
975	}
976	}
977	}
978	}
979
980	/**
981	* Clears all cron events
982	*
983	* @return void
984	*/
985	public function wpo_cron_deactivate() {
986	$cron_jobs = _get_cron_array();
987	foreach ($cron_jobs as $job) {
988	foreach (array_keys($job) as $hook) {
989	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
990	}
991	}
992	}
993
994	/**
995	* Scheduler public functions to update schedulers
996	*
997	* @param array $schedules An array of schedules being passed.
998	* @return array An array of schedules being returned.
999	*/
1000	public function cron_schedules($schedules) {
1001	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1002	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1003	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1004	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1005	return $schedules;
1006	}
1007
1008	/**
1009	* Returns count of overdue cron jobs.
1010	*
1011	* @return integer
1012	*/
1013	public function howmany_overdue_crons() {
1014	$how_many_overdue = 0;
1015	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1016	$crons = _get_cron_array();
1017	if (is_array($crons)) {
1018	$timenow = time();
1019	foreach ($crons as $jt => $job) {
1020	if ($jt < $timenow) {
1021	$how_many_overdue++;
1022	}
1023	}
1024	}
1025	}
1026	return $how_many_overdue;
1027	}
1028
1029	/**
1030	* Run updates on plugin activation.
1031	*/
1032	public function run_updates() {
1033	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1034	WP_Optimize_Updates::check_updates();
1035	}
1036
1037	/**
1038	* Returns warning about overdue crons.
1039	*
1040	* @param int $howmany count of overdue crons
1041	* @return string
1042	*/
1043	public function show_admin_warning_overdue_crons($howmany) {
1044	$ret = '<div class="updated below-h2"><p>';
1045	$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>';
1046	$ret .= '</p></div>';
1047	return $ret;
1048	}
1049
1050	private function wp_normalize_path($path) {
1051	// Wp_normalize_path is not present before WP 3.9.
1052	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1053	// Taken from WP 4.6.
1054	$path = str_replace('\\', '/', $path);
1055	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1056	if (':' === substr($path, 1, 1)) {
1057	$path = ucfirst($path);
1058	}
1059	return $path;
1060	}
1061
1062	public function get_templates_dir() {
1063	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1064	}
1065
1066	public function get_templates_url() {
1067	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1068	}
1069
1070	/**
1071	* Return or output view content
1072	*
1073	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1074	* @param Boolean $return_instead_of_echo - what to do with the results
1075	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1076	*
1077	* @return String\|Void
1078	*/
1079	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1080	if ($return_instead_of_echo) ob_start();
1081
1082	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1083	$prefix = $matches[1];
1084	$suffix = $matches[2];
1085	if (isset($this->template_directories[$prefix])) {
1086	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1087	}
1088	}
1089
1090	if (!isset($template_file)) {
1091	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1092	}
1093
1094	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1095
1096	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1097
1098	if (!file_exists($template_file)) {
1099	error_log("WP Optimize: template not found: ".$template_file);
1100	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1101	} else {
1102	extract($extract_these);
1103	// The following are useful variables which can be used in the template.
1104	// They appear as unused, but may be used in the $template_file.
1105	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1106	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1107	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1108	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1109	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1110	include $template_file;
1111	}
1112
1113	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1114
1115	if ($return_instead_of_echo) return ob_get_clean();
1116	}
1117
1118	/**
1119	* Build a list of template directories (stored in self::$template_directories)
1120	*/
1121	private function register_template_directories() {
1122
1123	$template_directories = array();
1124
1125	$templates_dir = $this->get_templates_dir();
1126
1127	if ($dh = opendir($templates_dir)) {
1128	while (($file = readdir($dh)) !== false) {
1129	if ('.' == $file \|\| '..' == $file) continue;
1130	if (is_dir($templates_dir.'/'.$file)) {
1131	$template_directories[$file] = $templates_dir.'/'.$file;
1132	}
1133	}
1134	closedir($dh);
1135	}
1136
1137	// Optimal hook for most extensions to hook into.
1138	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1139
1140	}
1141
1142	/**
1143	* Message to debug
1144	*
1145	* @param string $message Message to insert into the log.
1146	* @param array $context array with variables used in $message like in template,
1147	* for ex.
1148	* $message = 'Hello {message}';
1149	* $context = ['message' => 'world']
1150	* 'Hello world' string will be saved in log.
1151	*/
1152	public function log($message, $context = array()) {
1153	$this->get_logger()->debug($message, $context);
1154	}
1155
1156	/**
1157	* Format Bytes Into KB/MB
1158	*
1159	* @param mixed $bytes Number of bytes to be converted.
1160	* @param integer $decimals the number of decimal digits
1161	* @return integer return the correct format size.
1162	*/
1163	public function format_size($bytes, $decimals = 2) {
1164	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1165
1166	if (1073741824 <= $bytes) {
1167	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1168	} elseif (1048576 <= $bytes) {
1169	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1170	} elseif (1024 <= $bytes) {
1171	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1172	} elseif (1 < $bytes) {
1173	$bytes = $bytes . ' bytes';
1174	} elseif (1 == $bytes) {
1175	$bytes = $bytes . ' byte';
1176	} else {
1177	$bytes = '0 bytes';
1178	}
1179
1180	return $bytes;
1181	}
1182
1183	/**
1184	* Format a timestamp into a juman readable date time
1185	*
1186	* @param int $timestamp
1187	* @return string
1188	*/
1189	public function format_date_time($timestamp) {
1190	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1191	}
1192
1193	/**
1194	* Executed this function on cron event.
1195	*
1196	* @return void
1197	*/
1198	public function cron_action() {
1199
1200	$optimizer = $this->get_optimizer();
1201	$options = $this->get_options();
1202
1203	$this->log('WPO: Starting cron_action()');
1204	$options->update_option('last-optimized', time());
1205	if ('true' == $options->get_option('schedule')) {
1206	$this_options = $options->get_option('auto');
1207
1208	// Currently the output of the optimizations is not saved/used/logged.
1209	$optimizer->do_optimizations($this_options, 'auto');
1210	}
1211
1212	}
1213
1214	/**
1215	* Schedule cron tasks used by plugin.
1216	*
1217	* @return void
1218	*/
1219	public function schedule_plugin_cron_tasks() {
1220	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1221	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1222	}
1223
1224	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1225	}
1226
1227	/**
1228	* Do plugin background tasks.
1229	*
1230	* @return void
1231	*/
1232	public function do_weekly_cron_tasks() {
1233	// add tasks here.
1234	$this->get_db_info()->update_plugin_json();
1235	}
1236
1237	/**
1238	* This will customize a URL with a correct Affiliate link
1239	* This function can be update to suit any URL as longs as the URL is passed
1240	*
1241	* @param String $url - URL to be check to see if it an updraftplus match.
1242	* @param String $text - Text to be entered within the href a tags.
1243	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1244	* @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"').
1245	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1246	* @return String\|void
1247	*/
1248	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1249	// Check if the URL is UpdraftPlus.
1250	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1251
1252	// Check if the variable $text is empty (null value included), otherwise assign $html.
1253	$content = empty($text) ? $html : esc_html($text);
1254
1255	// Check if $attrs is an array to convert the attributes into a string line.
1256	$str_attrs = '';
1257	if (is_array($attrs)) {
1258	foreach ($attrs as $attr => $value) {
1259	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1260	}
1261	} else {
1262	// If $attrs is empty, the explode function will only return an empty array.
1263	$attrs = explode('=', $attrs);
1264	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1265	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1266	}
1267
1268	// Check if it is necessary to add a target value if the url is external
1269	$is_external_url = $this->is_external_url($url);
1270	if ($is_external_url) {
1271	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1272	$str_attrs .= ' target="_blank"';
1273	}
1274
1275	$result = sprintf(
1276	'<a href="%s" %s>%s</a>',
1277	esc_url($url),
1278	$str_attrs,
1279	$content
1280	);
1281
1282	if ($return_instead_of_echo) return $result;
1283	echo $result;
1284	}
1285
1286	/**
1287	* Check if a URL is external
1288	*
1289	* @param string $url
1290	* @return string
1291	*/
1292	public function is_external_url($url) {
1293	if (empty($url)) {
1294	return false;
1295	}
1296
1297	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1298	$url = wp_parse_url($url, PHP_URL_HOST);
1299
1300	// Compare the domains and return true if they are different
1301	return $current_domain !== $url;
1302	}
1303
1304	/**
1305	* Get an URL with an eventual affiliate ID
1306	*
1307	* @param string $url
1308	* @return string
1309	*/
1310	public function maybe_add_affiliate_params($url) {
1311	// Check if the URL is UpdraftPlus.
1312	if (false !== strpos($url, '//updraftplus.com')) {
1313	// Set URL with Affiliate ID.
1314	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1315
1316	// Apply filters.
1317	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1318	}
1319	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1320	}
1321
1322	/**
1323	* Setup WPO logger(s)
1324	*/
1325	public function setup_loggers() {
1326
1327	$logger = $this->get_logger();
1328	$loggers = $this->wpo_loggers();
1329
1330	if (!empty($loggers)) {
1331	foreach ($loggers as $_logger) {
1332	$logger->add_logger($_logger);
1333	}
1334	}
1335
1336	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1337	}
1338
1339	/**
1340	* Run logger actions after all optimizations done
1341	*/
1342	public function after_optimizations_logger_action() {
1343	$loggers = $this->get_logger()->get_loggers();
1344	if (!empty($loggers)) {
1345	foreach ($loggers as $logger) {
1346	if (is_a($logger, 'Updraft_Email_Logger')) {
1347	$logger->flush_log();
1348	}
1349	}
1350	}
1351	}
1352
1353	/**
1354	* Returns list of WPO loggers instances
1355	* Apply filter wp_optimize_loggers
1356	*
1357	* @return array
1358	*/
1359	public function wpo_loggers() {
1360
1361	$loggers = array();
1362	$loggers_classes_by_id = array();
1363	$options_keys = array();
1364
1365	$loggers_classes = $this->get_loggers_classes();
1366
1367	foreach ($loggers_classes as $logger_class => $source) {
1368	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1369	}
1370
1371	$options = $this->get_options();
1372
1373	$saved_loggers = $options->get_option('logging');
1374	$logger_additional_options = $options->get_option('logging-additional');
1375
1376	// create loggers classes instances.
1377	if (!empty($saved_loggers)) {
1378	// check for previous version options format.
1379	$keys = array_keys($saved_loggers);
1380
1381	// if options stored in old format then reformat it.
1382	if (false == is_numeric($keys[0])) {
1383	$_saved_loggers = array();
1384	foreach ($saved_loggers as $logger_id => $enabled) {
1385	if ($enabled) {
1386	$_saved_loggers[] = $logger_id;
1387	}
1388	}
1389
1390	// fill email with admin.
1391	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1392	$logger_additional_options['updraft_email_logger'] = array(
1393	get_option('admin_email')
1394	);
1395	}
1396
1397	$saved_loggers = $_saved_loggers;
1398	}
1399
1400	foreach ($saved_loggers as $i => $logger_id) {
1401
1402	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1403
1404	$logger_class = $loggers_classes_by_id[$logger_id];
1405
1406	$logger = new $logger_class();
1407
1408	$logger_options = $logger->get_options_list();
1409
1410	if (!empty($logger_options)) {
1411	foreach (array_keys($logger_options) as $option_name) {
1412	if (array_key_exists($option_name, $options_keys)) {
1413	$options_keys[$option_name]++;
1414	} else {
1415	$options_keys[$option_name] = 0;
1416	}
1417
1418	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1419
1420	// if options in old format then get correct value.
1421	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1422	$option_value = array_shift($logger_additional_options[$logger_id]);
1423	}
1424
1425	$logger->set_option($option_name, $option_value);
1426	}
1427	}
1428
1429	// check if logger is active.
1430	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1431
1432	if ($active) {
1433	$logger->enable();
1434	} else {
1435	$logger->disable();
1436	}
1437
1438	$loggers[] = $logger;
1439	}
1440	}
1441
1442	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1443
1444	return $loggers;
1445	}
1446
1447	/**
1448	* Returns associative array with logger class name in a key and path to class file in a value.
1449	*
1450	* @return array
1451	*/
1452	public function get_loggers_classes() {
1453	$loggers_classes = array(
1454	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1455	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1456	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1457	);
1458
1459	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1460
1461	if (!empty($loggers_classes)) {
1462	foreach ($loggers_classes as $logger_class => $logger_file) {
1463	if (!class_exists($logger_class)) {
1464	if (is_file($logger_file)) {
1465	include_once($logger_file);
1466	}
1467	}
1468	}
1469	}
1470
1471	return $loggers_classes;
1472	}
1473
1474	/**
1475	* Returns information about all loggers classes.
1476	*
1477	* @return array
1478	*/
1479	public function get_loggers_classes_info() {
1480	$loggers_classes = $this->get_loggers_classes();
1481
1482	$loggers_classes_info = array();
1483
1484	if (!empty($loggers_classes)) {
1485	foreach (array_keys($loggers_classes) as $logger_class_name) {
1486
1487	if (!class_exists($logger_class_name)) continue;
1488
1489	$logger_id = strtolower($logger_class_name);
1490	$logger_class = new $logger_class_name();
1491
1492	$loggers_classes_info[$logger_id] = array(
1493	'description' => $logger_class->get_description(),
1494	'available' => $logger_class->is_available(),
1495	'allow_multiple' => $logger_class->is_allow_multiple(),
1496	'options' => $logger_class->get_options_list()
1497	);
1498	}
1499	}
1500
1501	return $loggers_classes_info;
1502	}
1503
1504	/**
1505	* Returns true if optimization works in multisite mode
1506	*
1507	* @return boolean
1508	*/
1509	public function is_multisite_mode() {
1510	return (is_multisite() && self::is_premium());
1511	}
1512
1513	/**
1514	* Returns true if current user can run optimizations.
1515	*
1516	* @return bool
1517	*/
1518	public function can_run_optimizations() {
1519	// we don't check permissions for cron jobs.
1520	if (defined('DOING_CRON') && DOING_CRON) return true;
1521
1522	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1523	return true;
1524	}
1525
1526	/**
1527	* Returns true if current user can manage plugin options.
1528	*
1529	* @return bool
1530	*/
1531	public function can_manage_options() {
1532	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1533	return true;
1534	}
1535
1536	/**
1537	* Returns list of all sites in multisite
1538	*
1539	* @return array
1540	*/
1541	public function get_sites() {
1542	$sites = array();
1543	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1544	if (function_exists('get_sites')) {
1545	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1546	} elseif (function_exists('wp_get_sites')) {
1547	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1548	}
1549	return $sites;
1550	}
1551
1552	/**
1553	* Returns script memory limit in megabytes.
1554	*
1555	* @param bool $memory_limit
1556	* @return int
1557	*/
1558	public function get_memory_limit($memory_limit = false) {
1559	// Returns in megabytes
1560	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1561	$memory_limit = rtrim($memory_limit);
1562
1563	return $this->return_bytes($memory_limit);
1564	}
1565
1566	/**
1567	* Returns free memory in bytes.
1568	*
1569	* @return int
1570	*/
1571	public function get_free_memory() {
1572	return $this->get_memory_limit() - memory_get_usage();
1573	}
1574
1575	/**
1576	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1577	*
1578	* @return int memory limit in bytes.
1579	*/
1580	public function get_script_memory_limit() {
1581	$memory_limit = $this->get_memory_limit();
1582
1583	if (defined('WP_MAX_MEMORY_LIMIT')) {
1584	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1585
1586	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1587	$memory_limit = $wp_memory_limit;
1588	}
1589	}
1590
1591	return $memory_limit;
1592	}
1593
1594	/**
1595	* Returns max packet size for database.
1596	*
1597	* @return int\|string
1598	*/
1599	public function get_max_packet_size() {
1600	global $wpdb;
1601	static $mp = 0;
1602
1603	if ($mp > 0) return $mp;
1604
1605	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1606	// Default to 1MB
1607	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1608	// 32MB
1609	if ($mp < 33554432) {
1610	$save = $wpdb->show_errors(false);
1611	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1612	$wpdb->show_errors($save);
1613
1614	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1615	// Default to 1MB
1616	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1617	}
1618
1619	return $mp;
1620	}
1621
1622	/**
1623	* Converts shorthand memory notation value to bytes.
1624	* From http://php.net/manual/en/function.ini-get.php
1625	*
1626	* @param string $val shorthand memory notation value.
1627	*/
1628	public function return_bytes($val) {
1629	$val = trim($val);
1630	$last = strtolower($val[strlen($val)-1]);
1631	$val = (int) $val;
1632	switch ($last) {
1633	case 'g':
1634	$val *= 1024;
1635	// no break
1636	case 'm':
1637	$val *= 1024;
1638	// no break
1639	case 'k':
1640	$val *= 1024;
1641	}
1642
1643	return $val;
1644	}
1645
1646	/**
1647	* Log fatal errors to defined log destinations.
1648	*/
1649	public function log_fatal_errors() {
1650	$last_error = error_get_last();
1651
1652	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1653	$this->get_logger()->critical($last_error['message']);
1654	}
1655	}
1656
1657	/**
1658	* Close browser connection and continue script work. - Taken from UpdraftPlus
1659	*
1660	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1661	* @return void
1662	*/
1663	public function close_browser_connection($txt = '') {
1664	if (!headers_sent()) {
1665	// Close browser connection so that it can resume AJAX polling
1666	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1667	header('Connection: close');
1668	header('Content-Encoding: none');
1669	}
1670
1671	if (session_id()) session_write_close();
1672	echo "\r\n\r\n";
1673	echo $txt;
1674	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1675	$ob_level = ob_get_level();
1676	while ($ob_level > 0) {
1677	ob_end_flush();
1678	$ob_level--;
1679	}
1680	flush();
1681	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1682	}
1683
1684	/**
1685	* Get the current theme's style.css headers
1686	*
1687	* @return array\|WP_Error
1688	*/
1689	public function get_stylesheet_headers() {
1690	static $headers;
1691	if (isset($headers)) return $headers;
1692
1693	$style = get_template_directory_uri() . '/style.css';
1694
1695	/**
1696	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1697	*
1698	* @param array $request_params Default parameters
1699	*/
1700	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1701
1702	// trying to load style.css.
1703	$response = wp_remote_get($style, $request_params);
1704
1705	if (is_a($response, 'WP_Error')) return $response;
1706
1707	$headers = wp_remote_retrieve_headers($response);
1708
1709	if (method_exists($headers, 'getAll')) {
1710	$headers = $headers->getAll();
1711	}
1712
1713	return is_array($headers) ? $headers : array();
1714	}
1715
1716	/**
1717	* Try to change PHP script time limit.
1718	*/
1719	public function change_time_limit() {
1720	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1721
1722	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1723	}
1724
1725	/**
1726	* Does the request come from UDC
1727	*
1728	* @return boolean
1729	*/
1730	public function is_updraft_central_request() {
1731	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1732	}
1733
1734	/**
1735	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1736	*
1737	* @return boolean
1738	*/
1739	public function template_should_include_data() {
1740	/**
1741	* Filters wether data should be included in certain templates or not.
1742	*/
1743	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1744	}
1745
1746	/**
1747	* Load the templates for the modal window
1748	*/
1749	public function load_modal_template() {
1750	$this->include_template('modal.php');
1751	}
1752
1753	/**
1754	* Delete transients and semaphores data from options table.
1755	*/
1756	public function delete_transients_and_semaphores() {
1757	global $wpdb;
1758
1759	$masks = array(
1760	'updraft_locked_wpo_%',
1761	'updraft_unlocked_wpo_%',
1762	'updraft_last_lock_time_wpo_%',
1763	'updraft_semaphore_wpo_%',
1764	'wpo_locked_%',
1765	'wpo_unlocked_%',
1766	'wpo_last_lock_time_%',
1767	'wpo_semaphore_%',
1768	'_transient_timeout_wpo_%',
1769	'_transient_wpo_%',
1770	'updraft_lock_wpo_%',
1771	'wpo_last_scheduled_%',
1772	);
1773
1774	$where_parts = array();
1775	foreach ($masks as $mask) {
1776	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1777	}
1778
1779	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1780	}
1781
1782	/**
1783	* Prevents bots from indexing plugins list
1784	*/
1785	public function robots_txt($output) {
1786	$upload_dir = wp_upload_dir();
1787	$path = parse_url($upload_dir['baseurl']);
1788	$output .= "\nUser-agent: *";
1789	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo-plugins-tables-list.json\n";
1790	return $output;
1791	}
1792
1793	/**
1794	* Returns desired enqueue version string
1795	*
1796	* @return string Enqueue version as string
1797	*/
1798	public function get_enqueue_version() {
1799	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1800	}
1801
1802	/**
1803	* Returns script suffix string
1804	*
1805	* @return string empty or `.min` suffix string
1806	*/
1807	public function get_min_or_not_string() {
1808	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1809	}
1810
1811	/**
1812	* Returns script suffix string with WPO_VERSION
1813	*
1814	* @return string empty or min suffix with wpo_version string
1815	*/
1816	public function get_min_or_not_internal_string() {
1817	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1818	}
1819
1820	/**
1821	* Instantiate Ajax handling class
1822	*/
1823	private function load_ajax_handler() {
1824	WPO_Ajax::get_instance();
1825	}
1826	}
1827
1828	function wpo_cron_deactivate() {
1829	WP_Optimize()->log('running wpo_cron_deactivate()');
1830	wp_clear_scheduled_hook('wpo_cron_event2');
1831	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1832	}
1833
1834	function WP_Optimize() {
1835	return WP_Optimize::instance();
1836	}
1837
1838	endif;
1839
1840	$GLOBALS['wp_optimize'] = WP_Optimize();
1841