wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.2.22, at wp-optimize.php

1,852 lines 59.8 KB

Raw Download Zip

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: 3.2.22
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', '3.2.22');
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	$this->load_ajax_handler();
71
72	// Show update to Premium notice for non-premium multisite.
73	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
74
75	// Action column (show repair button if need).
76	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
77
78	/**
79	* Add action for display Images > Compress images tab.
80	*/
81	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
82
83	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
84
85	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
86
87	register_shutdown_function(array($this, 'log_fatal_errors'));
88
89	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
90
91	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
92
93	$import_done_hooks = array(
94	'import_end', // wordpress importer
95	'pmxi_after_xml_import', // wp all import
96	);
97
98	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
99
100	foreach ($db_update_hooks as $hook) {
101	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
102	}
103	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
104	}
105
106	/**
107	* Auto-loads classes.
108	*
109	* @param string $class_name The name of the class.
110	*/
111	private function loader($class_name) {
112	$dirs = $this->get_class_directories();
113
114	foreach ($dirs as $dir) {
115	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
116	if (file_exists($class_file)) {
117	require_once($class_file);
118	return;
119	}
120	}
121	}
122
123	/**
124	* Returns an array of class directories
125	*
126	* @return array
127	*/
128	private function get_class_directories() {
129	return array(
130	'cache',
131	'compatibility',
132	'includes',
133	'minify',
134	'optimizations',
135	'webp',
136	);
137	}
138
139	/**
140	* Initialize Admin class to load admin UI
141	*/
142	private function load_admin() {
143	$this->get_admin_instance();
144	}
145
146	/**
147	* Returns Admin class instance
148	*
149	* @return WP_Optimize_Admin
150	*/
151	public function get_admin_instance() {
152	return WP_Optimize_Admin::instance();
153	}
154
155	/**
156	* Detect when an active plugin or theme is updated, and trigger an action
157	*
158	* @param object $upgrader_object
159	* @param array $options
160	* @return void
161	*/
162	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
163	if (empty($options) \|\| !isset($options['type'])) return;
164
165	$should_purge_cache = false;
166	$skin = $upgrader_object->skin;
167	if ('plugin' === $options['type']) {
168	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
169	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
170	$should_purge_cache = true;
171	}
172	} elseif ('theme' === $options['type']) {
173	$active_theme = get_stylesheet();
174	$parent_theme = get_template();
175	// A theme is updated using the upload system
176	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
177	$updated_theme = $upgrader_object->result['destination_name'];
178	// Check if the theme is in use
179	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
180	$should_purge_cache = true;
181	}
182	// A theme is updated using the classic update system
183	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
184	// Check if the theme is in use
185	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
186	$should_purge_cache = true;
187	}
188	}
189	}
190
191	/**
192	* Action executed when an active theme or plugin was updated
193	*/
194	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
195
196	}
197
198	/**
199	* Sets a flag to indicate an import action is done, if needed
200	*/
201	public function maybe_schedule_update_record_count_event() {
202	if (!wp_next_scheduled('wpo_update_record_count_event')) {
203	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
204	}
205	}
206
207	public function admin_page_wpo_images_smush() {
208	$options = Updraft_Smush_Manager()->get_smush_options();
209	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
210	$sites = WP_Optimize()->get_sites();
211	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion()));
212	}
213
214	public static function instance() {
215	if (empty(self::$_instance)) {
216	self::$_instance = new self();
217	}
218	return self::$_instance;
219	}
220
221	public function get_optimizer() {
222	return WP_Optimizer::instance();
223	}
224
225	/**
226	* Adds 3rd party plugin compatibilities.
227	*/
228	public function load_compatibilities() {
229	WPO_Polylang_Compatibility::instance();
230	WPO_Page_Builder_Compatibility::instance();
231	WPO_Custom_Permalink_Compatibility::instance();
232
233	do_action('wpo_load_compatibilities');
234	}
235
236	/**
237	* Get and instantiate WP_Optimize_Minify
238	*
239	* @return WP_Optimize_Minify
240	*/
241	public function get_minify() {
242	return WP_Optimize_Minify::instance();
243	}
244
245	public function get_options() {
246	return WP_Optimize_Options::instance();
247	}
248
249	public function get_notices() {
250	return WP_Optimize_Notices::instance();
251	}
252
253	/**
254	* Returns instance if WPO_Page_Cache class.
255	*
256	* @return WPO_Page_Cache
257	*/
258	public function get_page_cache() {
259	return WPO_Page_Cache::instance();
260	}
261
262	/**
263	* Returns instance if WP_Optimize_WebP class.
264	*
265	* @return WP_Optimize_WebP
266	*/
267	public function get_webp_instance() {
268	return WP_Optimize_WebP::get_instance();
269	}
270
271	/**
272	* Detects if the platform is Kinsta or not
273	*
274	* @return bool Returns true if it is Kinsta platform, otherwise returns false
275	*/
276	private function is_kinsta() {
277	return isset($_SERVER['KINSTA_CACHE_ZONE']);
278	}
279
280	/**
281	* Detects whether the server handles cache. eg. Nginx cache
282	*/
283	public function does_server_handles_cache() {
284	return $this->is_kinsta();
285	}
286
287	/**
288	* Detects whether the server supports table optimization.
289	*
290	* Some servers prevent table optimization
291	* because InnoDB engine does not optimize table
292	* instead it drops tables and recreate them
293	* which results in elevated disk write operations
294	*/
295	public function does_server_allows_table_optimization() {
296	return !$this->is_kinsta();
297	}
298
299	/**
300	* Detects whether the server supports local webp conversion tools
301	*/
302	private function does_server_allows_local_webp_conversion() {
303	return !$this->is_kinsta();
304	}
305
306	/**
307	* Create instance of WP_Optimize_Browser_Cache.
308	*
309	* @return WP_Optimize_Browser_Cache
310	*/
311	public function get_browser_cache() {
312	return WP_Optimize_Browser_Cache::instance();
313	}
314
315	/**
316	* Returns WP_Optimize_Database_Information instance.
317	*
318	* @return WP_Optimize_Database_Information
319	*/
320	public function get_db_info() {
321	return WP_Optimize_Database_Information::instance();
322	}
323
324	/**
325	* Returns instance of WP_Optimize_Gzip_Compression.
326	*
327	* @return WP_Optimize_Gzip_Compression
328	*/
329	public function get_gzip_compression() {
330	return WP_Optimize_Gzip_Compression::instance();
331	}
332
333	/**
334	* Create instance of WP_Optimize_Htaccess.
335	*
336	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
337	* @return WP_Optimize_Htaccess
338	*/
339	public static function get_htaccess($htaccess_file = '') {
340	return new WP_Optimize_Htaccess($htaccess_file);
341	}
342
343	/**
344	* Return instance of Updraft_Logger
345	*
346	* @return Updraft_Logger
347	*/
348	public function get_logger() {
349	return Updraft_Logger::instance();
350	}
351
352	/**
353	* Check if the current page belongs to WP-Optimize.
354	*
355	* @return bool
356	*/
357	public function is_wpo_page() {
358	$current_screen = get_current_screen();
359
360	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
361	}
362
363	/**
364	* Enqueue scripts and styles on WP-Optimize pages.
365	*/
366	public function admin_enqueue_scripts() {
367	$enqueue_version = $this->get_enqueue_version();
368	$min_or_not = $this->get_min_or_not_string();
369	$min_or_not_internal = $this->get_min_or_not_internal_string();
370
371	// Register or enqueue common scripts
372	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
373	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
374	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
375
376	// load scripts and styles only on WP-Optimize pages.
377	if (!$this->is_wpo_page()) return;
378
379	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
380
381	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
382	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
383	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js'), $enqueue_version);
384	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js'), $enqueue_version);
385	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
386	// Using tablesorter to help with organising the DB size on Table Information
387	// https://github.com/Mottie/tablesorter
388	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
389
390	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
391
392	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
393
394	$js_variables = $this->wpo_js_translations();
395	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
396
397	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
398
399	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
400	}
401
402	/**
403	* Enqueue any required front-end scripts
404	*
405	* @return void
406	*/
407	public function frontend_enqueue_scripts() {
408	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
409	$enqueue_version = $this->get_enqueue_version();
410	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
411
412	// Register or enqueue common scripts
413	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
414	}
415
416	/**
417	* Load Task Manager
418	*/
419	public function get_task_manager() {
420	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
421
422	Updraft_Tasks_Activation::check_updates();
423
424	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
425	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
426	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
427
428	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
429	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
430
431	return Updraft_Smush_Manager();
432	}
433
434	/**
435	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
436	*
437	* @returns Boolean
438	*/
439	public static function is_premium() {
440	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
441	$wp_optimize_premium = WP_Optimize_Premium();
442	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
443	}
444	return false;
445	}
446
447	/**
448	* 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.
449	*
450	* @return bool
451	*/
452	public function is_apache_server() {
453	global $is_apache;
454	return $is_apache;
455	}
456
457	/**
458	* Check if script running on IIS web server.
459	*
460	* @return bool
461	*/
462	public function is_IIS_server() {
463	global $is_IIS, $is_iis7;
464	return $is_IIS \|\| $is_iis7;
465	}
466
467	/**
468	* Check if Apache module or modules active.
469	*
470	* @param string\|array $module - single Apache module name or list of Apache module names.
471	*
472	* @return bool\|null - if null, the result was indeterminate
473	*/
474	public function is_apache_module_loaded($module) {
475	if (!$this->is_apache_server()) return false;
476
477	if (!function_exists('apache_get_modules')) return null;
478
479	$module_loaded = true;
480
481	if (is_array($module)) {
482	foreach ($module as $single_module) {
483	if (!in_array($single_module, apache_get_modules())) {
484	$module_loaded = false;
485	break;
486	}
487	}
488	} else {
489	$module_loaded = in_array($module, apache_get_modules());
490	}
491
492	return $module_loaded;
493	}
494
495	/**
496	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
497	*/
498	public function plugins_loaded() {
499
500	if ($this->does_server_handles_cache()) {
501	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
502
503	// If newly migrated to server that handles cache, disable wpo cache
504	$cache = $this->get_page_cache();
505	if ($cache->is_enabled()) {
506	$cache->disable();
507	}
508	}
509
510	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
511
512	// Run Premium loader if it exists
513	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
514	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
515	}
516
517	// load defaults
518	WP_Optimize()->get_options()->set_default_options();
519
520	// Initialize loggers.
521	$this->setup_loggers();
522
523	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
524	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
525	deactivate_plugins($free_plugin);
526
527	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
528	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
529	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
530
531	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
532	file_put_contents($advanced_cache_filename, '');
533	}
534	}
535
536	// Registers the notice letting the user know it cannot be active if premium is active.
537	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
538	return;
539	}
540
541	// Loads the task manager
542	$this->get_task_manager();
543
544	// Loads the language file.
545	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
546
547	// Load 3rd party plugin compatibilities.
548	$this->load_compatibilities();
549
550	// Load page cache.
551	$this->get_page_cache();
552	$this->init_page_cache();
553
554	// Include minify
555	$this->get_minify();
556	$this->run_updates();
557
558	// We need this here because webp can be unavailable because of server moves
559	// This deletes already converted webp images and original image file when a media is deleted
560	WP_Optimize_WebP_Images::get_instance();
561
562	// Include WebP
563	if (WP_Optimize_WebP::is_shell_functions_available() && WPO_USE_WEBP_CONVERSION) {
564	$this->get_webp_instance();
565	}
566
567	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
568	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
569	}
570
571	/**
572	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
573	* (e.g. "central" folder)
574	*
575	* @param array $hosts List of plugins having the "central" library integrated into them
576	*
577	* @return array
578	*/
579	public function attach_updraftcentral_host($hosts) {
580	$hosts[] = 'wp-optimize';
581	return $hosts;
582	}
583
584	/**
585	* Filter cache tabs (when it is Kinsta)
586	*
587	* @param array $tabs An array of tabs
588	*
589	* @return array $tabs An array of tabs
590	*/
591	public function filter_cache_tabs($tabs) {
592	unset($tabs['preload']);
593	unset($tabs['advanced']);
594	unset($tabs['gzip']);
595	unset($tabs['settings']);
596	return $tabs;
597	}
598
599	/**
600	* Check whether one of free/Premium is active (whether it is this instance or not)
601	*
602	* @param String $which - 'free' or 'premium'
603	*
604	* @return String\|Boolean - plugin path (if installed) or false if not
605	*/
606	private function is_active($which = 'free') {
607	$active_plugins = $this->get_active_plugins();
608	foreach ($active_plugins as $file) {
609	if ('wp-optimize.php' == basename($file)) {
610	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
611	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
612	}
613	}
614	return false;
615	}
616
617	/**
618	* Gets an array of plugins active on either the current site, or site-wide
619	*
620	* @return Array - a list of plugin paths (relative to the plugin directory)
621	*/
622	private function get_active_plugins() {
623
624	// Gets all active plugins on the current site
625	$active_plugins = get_option('active_plugins');
626
627	if (is_multisite()) {
628	$network_active_plugins = get_site_option('active_sitewide_plugins');
629	if (!empty($network_active_plugins)) {
630	$network_active_plugins = array_keys($network_active_plugins);
631	$active_plugins = array_merge($active_plugins, $network_active_plugins);
632	}
633	}
634
635	return $active_plugins;
636	}
637
638	/**
639	* This function checks whether a specific plugin is installed, and returns information about it
640	*
641	* @param string $name Specify "Plugin Name" to return details about it.
642	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
643	*/
644	public function is_installed($name) {
645
646	// Needed to have the 'get_plugins()' function
647	include_once(ABSPATH.'wp-admin/includes/plugin.php');
648
649	// Gets all plugins available
650	$get_plugins = get_plugins();
651
652	$active_plugins = $this->get_active_plugins();
653
654	$plugin_info = array();
655	$plugin_info['installed'] = false;
656	$plugin_info['active'] = false;
657
658	// Loops around each plugin available.
659	foreach ($get_plugins as $key => $value) {
660	// If the plugin name matches that of the specified name, it will gather details.
661	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
662	$plugin_info['installed'] = true;
663	$plugin_info['name'] = $key;
664	$plugin_info['version'] = $value['Version'];
665	if (in_array($key, $active_plugins)) {
666	$plugin_info['active'] = true;
667	}
668	break;
669	}
670	return $plugin_info;
671	}
672
673	/**
674	* This is a notice to show users that premium is installed
675	*/
676	public function show_admin_notice_premium() {
677	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
678	if (isset($_GET['activate'])) unset($_GET['activate']);
679	}
680
681	/**
682	* Show update to Premium notice for non-premium multisite.
683	*/
684	public function show_multisite_update_to_premium_notice() {
685	if (!is_multisite() \|\| self::is_premium()) return;
686
687	echo '<p><a href="'.$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>';
688	}
689
690	public function admin_init() {
691	$pagenow = $GLOBALS['pagenow'];
692
693	$this->register_template_directories();
694
695	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
696	$options = $this->get_options();
697
698	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
699
700	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
701	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
702	$installed_for = (time() - $installed);
703	}
704
705	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
706	add_action('all_admin_notices', array($this, 'show_admin_notice_upgradead'));
707	}
708	}
709
710	if ($this->is_wp_smush_installed()) {
711	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
712	}
713	}
714
715	/**
716	* Checks whether the WP Smush plugin is active or not
717	*
718	* @return bool
719	*/
720	private function is_wp_smush_installed() {
721	return is_plugin_active('wp-smushit/wp-smush.php');
722	}
723
724	/**
725	* Remove WPO plugin name from WP Smushit transient value
726	*
727	* @return array $active_plugins
728	*/
729	public function modify_wp_smush_conflict_check($active_plugins) {
730	// This can be boolean value since it is return value of get_transient
731	if (!is_array($active_plugins)) return $active_plugins;
732
733	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
734	unset($active_plugins[$key]);
735	}
736	return $active_plugins;
737	}
738
739	/**
740	* Get the install or update notice instance
741	*
742	* @return WP_Optimize_Install_Or_Update_Notice
743	*/
744	public function get_install_or_update_notice() {
745	static $instance = null;
746	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
747	$instance = new WP_Optimize_Install_Or_Update_Notice();
748	return $instance;
749	}
750
751	public function show_admin_notice_upgradead() {
752	$this->include_template('notices/thanks-for-using-main-dash.php');
753	}
754
755	public function capability_required() {
756	return apply_filters('wp_optimize_capability_required', 'manage_options');
757	}
758
759	/**
760	* Returns array of translations used in javascript code.
761	*
762	* @return array
763	*/
764	public function wpo_js_translations() {
765	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
766	return apply_filters('wpo_js_translations', array(
767	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
768	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
769	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
770	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
771	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
772	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
773	'table_optimization_timeout' => 120000,
774	'add' => __('Add', 'wp-optimize'),
775	'cancel' => __('Cancel', 'wp-optimize'),
776	'cancelling' => __('Cancelling...', 'wp-optimize'),
777	'enable' => __('Enable', 'wp-optimize'),
778	'disable' => __('Disable', 'wp-optimize'),
779	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
780	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
781	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
782	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
783	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
784	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
785	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
786	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
787	'update' => __('Update', 'wp-optimize'),
788	'run_now' => __('Run now', 'wp-optimize'),
789	'starting_preload' => __('Started preload...', 'wp-optimize'),
790	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
791	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
792	'number_of_files' => __('Number of files:', 'wp-optimize'),
793	'toggle_info' => __('Show information', 'wp-optimize'),
794	'delete_file' => __('Delete', 'wp-optimize'),
795	'added_to_list' => __('Added to the list', 'wp-optimize'),
796	'added_notice' => __('The file was added to the list', 'wp-optimize'),
797	'save_notice' => __('Save the changes', 'wp-optimize'),
798	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
799	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
800	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
801	'loading_data' => __('Loading data...', 'wp-optimize'),
802	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
803	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
804	'sites' => $this->get_sites(),
805	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
806	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
807	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
808	'network_site_url' => network_site_url(),
809	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
810	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
811	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
812	'importing' => __('Importing...', 'wp-optimize'),
813	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
814	'exported_on' => __('Which was exported on:', 'wp-optimize'),
815	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
816	'select_destination' => __('Select destination', 'wp-optimize'),
817	));
818	}
819
820	/**
821	* Manages the admin bar menu for caching (currently page and minify)
822	*/
823	public function cache_admin_bar($wp_admin_bar) {
824
825	$options = $this->get_options();
826	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
827
828	/**
829	* The "purge cache" menu items
830	*
831	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
832	* @param object $wp_admin_bar
833	*/
834	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
835
836	if (empty($menu_items) \|\| !is_array($menu_items)) return;
837
838	$wp_admin_bar->add_menu(array(
839	'id' => 'wpo_purge_cache',
840	'title' => __('Purge cache', 'wp-optimize'),
841	'href' => '#',
842	'meta' => array(
843	'title' => __('Purge cache', 'wp-optimize'),
844	),
845	'parent' => false,
846	));
847
848	foreach ($menu_items as $item) {
849	$wp_admin_bar->add_menu($item);
850	}
851	}
852
853	/**
854	* Add settings link on plugin page
855	*
856	* @param string $links Passing through the URL to be used within the HREF.
857	* @return string Returns the Links.
858	*/
859	public function plugin_settings_link($links) {
860
861	$admin_page_url = $this->get_options()->admin_page_url();
862	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
863
864	if (false == self::is_premium()) {
865	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
866	array_unshift($links, $premium_link);
867	}
868
869	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
870	array_unshift($links, $settings_link);
871
872	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
873	array_unshift($links, $optimize_link);
874	return $links;
875	}
876
877	/**
878	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
879	*
880	* @param string $content String for output to column
881	* @param object $table_info Object with table info.
882	*
883	* @return string
884	*/
885	public function tables_list_additional_column_data($content, $table_info) {
886	if ($table_info->is_needing_repair) {
887	$content .= '<div class="wpo_button_wrap">'
888	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
889	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
890	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
891	. '</div>';
892	}
893
894	// table belongs to plugin.
895	if ($table_info->can_be_removed) {
896	$content .= '<div>'
897	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
898	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
899	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
900	. '</div>';
901	}
902
903	// Add option for MyISAM to InnoDB conversion.
904	if ('MyISAM' == $table_info->Engine) {
905	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
906	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
907	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
908	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
909	. '</div>';
910
911	}
912
913	return $content;
914	}
915
916	/**
917	* Initialize WP-Optimize page cache.
918	*/
919	public function init_page_cache() {
920	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
921	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
922	$this->_cache_init_status = $this->get_page_cache()->enable();
923	}
924	}
925	}
926
927	/**
928	* Get init_page_cache() status.
929	*
930	* @return bool
931	*/
932	public function get_init_page_cache_status() {
933	return $this->_cache_init_status;
934	}
935
936	/**
937	* Schedules cron event based on selected schedule type
938	*
939	* @return void
940	*/
941	public function cron_activate() {
942	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
943
944	$options = $this->get_options();
945
946	if ($options->get_option('schedule') === false) {
947	$options->set_default_options();
948	} else {
949	if ('true' == $options->get_option('schedule')) {
950	if (!wp_next_scheduled('wpo_cron_event2')) {
951	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
952
953	// Backward compatibility
954	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
955
956	$this_time = (86400 * 7);
957
958	switch ($schedule_type) {
959	case "wpo_daily":
960	$this_time = 86400;
961	break;
962
963	case "wpo_weekly":
964	$this_time = (86400 * 7);
965	break;
966
967	case "wpo_fortnightly":
968	$this_time = (86400 * 14);
969	break;
970
971	case "wpo_monthly":
972	$this_time = (86400 * 30);
973	break;
974	}
975
976	add_action('wpo_cron_event2', array($this, 'cron_action'));
977	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
978	WP_Optimize()->log('running wp_schedule_event()');
979	if (is_wp_error($result)) {
980	$error_msg = $result->get_error_message();
981	WP_Optimize()->log($error_msg);
982	WP_Optimize()->log(print_r($result, true));
983	} else {
984	WP_Optimize()->log($result);
985	}
986	}
987	}
988	}
989	}
990
991	/**
992	* Clears all cron events
993	*
994	* @return void
995	*/
996	public function wpo_cron_deactivate() {
997	$cron_jobs = _get_cron_array();
998	foreach ($cron_jobs as $job) {
999	foreach (array_keys($job) as $hook) {
1000	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1001	}
1002	}
1003	}
1004
1005	/**
1006	* Scheduler public functions to update schedulers
1007	*
1008	* @param array $schedules An array of schedules being passed.
1009	* @return array An array of schedules being returned.
1010	*/
1011	public function cron_schedules($schedules) {
1012	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1013	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1014	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1015	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1016	return $schedules;
1017	}
1018
1019	/**
1020	* Returns count of overdue cron jobs.
1021	*
1022	* @return integer
1023	*/
1024	public function howmany_overdue_crons() {
1025	$how_many_overdue = 0;
1026	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1027	$crons = _get_cron_array();
1028	if (is_array($crons)) {
1029	$timenow = time();
1030	foreach ($crons as $jt => $job) {
1031	if ($jt < $timenow) {
1032	$how_many_overdue++;
1033	}
1034	}
1035	}
1036	}
1037	return $how_many_overdue;
1038	}
1039
1040	/**
1041	* Run updates on plugin activation.
1042	*/
1043	public function run_updates() {
1044	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1045	WP_Optimize_Updates::check_updates();
1046	}
1047
1048	/**
1049	* Returns warning about overdue crons.
1050	*
1051	* @param int $howmany count of overdue crons
1052	* @return string
1053	*/
1054	public function show_admin_warning_overdue_crons($howmany) {
1055	$ret = '<div class="updated below-h2"><p>';
1056	$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>';
1057	$ret .= '</p></div>';
1058	return $ret;
1059	}
1060
1061	private function wp_normalize_path($path) {
1062	// Wp_normalize_path is not present before WP 3.9.
1063	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1064	// Taken from WP 4.6.
1065	$path = str_replace('\\', '/', $path);
1066	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1067	if (':' === substr($path, 1, 1)) {
1068	$path = ucfirst($path);
1069	}
1070	return $path;
1071	}
1072
1073	public function get_templates_dir() {
1074	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1075	}
1076
1077	public function get_templates_url() {
1078	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1079	}
1080
1081	/**
1082	* Return or output view content
1083	*
1084	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1085	* @param Boolean $return_instead_of_echo - what to do with the results
1086	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1087	*
1088	* @return String\|Void
1089	*/
1090	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1091	if ($return_instead_of_echo) ob_start();
1092
1093	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1094	$prefix = $matches[1];
1095	$suffix = $matches[2];
1096	if (isset($this->template_directories[$prefix])) {
1097	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1098	}
1099	}
1100
1101	if (!isset($template_file)) {
1102	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1103	}
1104
1105	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1106
1107	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1108
1109	if (!file_exists($template_file)) {
1110	error_log("WP Optimize: template not found: ".$template_file);
1111	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1112	} else {
1113	extract($extract_these);
1114	// The following are useful variables which can be used in the template.
1115	// They appear as unused, but may be used in the $template_file.
1116	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1117	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1118	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1119	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1120	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1121	include $template_file;
1122	}
1123
1124	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1125
1126	if ($return_instead_of_echo) return ob_get_clean();
1127	}
1128
1129	/**
1130	* Build a list of template directories (stored in self::$template_directories)
1131	*/
1132	private function register_template_directories() {
1133
1134	$template_directories = array();
1135
1136	$templates_dir = $this->get_templates_dir();
1137
1138	if ($dh = opendir($templates_dir)) {
1139	while (($file = readdir($dh)) !== false) {
1140	if ('.' == $file \|\| '..' == $file) continue;
1141	if (is_dir($templates_dir.'/'.$file)) {
1142	$template_directories[$file] = $templates_dir.'/'.$file;
1143	}
1144	}
1145	closedir($dh);
1146	}
1147
1148	// Optimal hook for most extensions to hook into.
1149	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1150
1151	}
1152
1153	/**
1154	* Message to debug
1155	*
1156	* @param string $message Message to insert into the log.
1157	* @param array $context array with variables used in $message like in template,
1158	* for ex.
1159	* $message = 'Hello {message}';
1160	* $context = ['message' => 'world']
1161	* 'Hello world' string will be saved in log.
1162	*/
1163	public function log($message, $context = array()) {
1164	$this->get_logger()->debug($message, $context);
1165	}
1166
1167	/**
1168	* Format Bytes Into KB/MB
1169	*
1170	* @param mixed $bytes Number of bytes to be converted.
1171	* @param integer $decimals the number of decimal digits
1172	* @return integer return the correct format size.
1173	*/
1174	public function format_size($bytes, $decimals = 2) {
1175	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1176
1177	if (1073741824 <= $bytes) {
1178	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1179	} elseif (1048576 <= $bytes) {
1180	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1181	} elseif (1024 <= $bytes) {
1182	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1183	} elseif (1 < $bytes) {
1184	$bytes = $bytes . ' bytes';
1185	} elseif (1 == $bytes) {
1186	$bytes = $bytes . ' byte';
1187	} else {
1188	$bytes = '0 bytes';
1189	}
1190
1191	return $bytes;
1192	}
1193
1194	/**
1195	* Format a timestamp into a juman readable date time
1196	*
1197	* @param int $timestamp
1198	* @return string
1199	*/
1200	public function format_date_time($timestamp) {
1201	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1202	}
1203
1204	/**
1205	* Executed this function on cron event.
1206	*
1207	* @return void
1208	*/
1209	public function cron_action() {
1210
1211	$optimizer = $this->get_optimizer();
1212	$options = $this->get_options();
1213
1214	$this->log('WPO: Starting cron_action()');
1215	$options->update_option('last-optimized', time());
1216	if ('true' == $options->get_option('schedule')) {
1217	$this_options = $options->get_option('auto');
1218
1219	// Currently the output of the optimizations is not saved/used/logged.
1220	$optimizer->do_optimizations($this_options, 'auto');
1221	}
1222
1223	}
1224
1225	/**
1226	* Schedule cron tasks used by plugin.
1227	*
1228	* @return void
1229	*/
1230	public function schedule_plugin_cron_tasks() {
1231	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1232	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1233	}
1234
1235	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1236	}
1237
1238	/**
1239	* Do plugin background tasks.
1240	*
1241	* @return void
1242	*/
1243	public function do_weekly_cron_tasks() {
1244	// add tasks here.
1245	$this->get_db_info()->update_plugin_json();
1246	}
1247
1248	/**
1249	* This will customize a URL with a correct Affiliate link
1250	* This function can be update to suit any URL as longs as the URL is passed
1251	*
1252	* @param String $url - URL to be check to see if it an updraftplus match.
1253	* @param String $text - Text to be entered within the href a tags.
1254	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1255	* @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"').
1256	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1257	* @return String\|void
1258	*/
1259	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1260	// Check if the URL is UpdraftPlus.
1261	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1262
1263	// Check if the variable $text is empty (null value included), otherwise assign $html.
1264	$content = empty($text) ? $html : esc_html($text);
1265
1266	// Check if $attrs is an array to convert the attributes into a string line.
1267	$str_attrs = '';
1268	if (is_array($attrs)) {
1269	foreach ($attrs as $attr => $value) {
1270	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1271	}
1272	} else {
1273	// If $attrs is empty, the explode function will only return an empty array.
1274	$attrs = explode('=', $attrs);
1275	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1276	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1277	}
1278
1279	// Check if it is necessary to add a target value if the url is external
1280	$is_external_url = $this->is_external_url($url);
1281	if ($is_external_url) {
1282	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1283	$str_attrs .= ' target="_blank"';
1284	}
1285
1286	$result = sprintf(
1287	'<a href="%s" %s>%s</a>',
1288	esc_url($url),
1289	$str_attrs,
1290	$content
1291	);
1292
1293	if ($return_instead_of_echo) return $result;
1294	echo $result;
1295	}
1296
1297	/**
1298	* Check if a URL is external
1299	*
1300	* @param string $url
1301	* @return string
1302	*/
1303	public function is_external_url($url) {
1304	if (empty($url)) {
1305	return false;
1306	}
1307
1308	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1309	$url = wp_parse_url($url, PHP_URL_HOST);
1310
1311	// Compare the domains and return true if they are different
1312	return $current_domain !== $url;
1313	}
1314
1315	/**
1316	* Get an URL with an eventual affiliate ID
1317	*
1318	* @param string $url
1319	* @return string
1320	*/
1321	public function maybe_add_affiliate_params($url) {
1322	// Check if the URL is UpdraftPlus.
1323	if (false !== strpos($url, '//updraftplus.com')) {
1324	// Set URL with Affiliate ID.
1325	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1326
1327	// Apply filters.
1328	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1329	}
1330	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1331	}
1332
1333	/**
1334	* Setup WPO logger(s)
1335	*/
1336	public function setup_loggers() {
1337
1338	$logger = $this->get_logger();
1339	$loggers = $this->wpo_loggers();
1340
1341	if (!empty($loggers)) {
1342	foreach ($loggers as $_logger) {
1343	$logger->add_logger($_logger);
1344	}
1345	}
1346
1347	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1348	}
1349
1350	/**
1351	* Run logger actions after all optimizations done
1352	*/
1353	public function after_optimizations_logger_action() {
1354	$loggers = $this->get_logger()->get_loggers();
1355	if (!empty($loggers)) {
1356	foreach ($loggers as $logger) {
1357	if (is_a($logger, 'Updraft_Email_Logger')) {
1358	$logger->flush_log();
1359	}
1360	}
1361	}
1362	}
1363
1364	/**
1365	* Returns list of WPO loggers instances
1366	* Apply filter wp_optimize_loggers
1367	*
1368	* @return array
1369	*/
1370	public function wpo_loggers() {
1371
1372	$loggers = array();
1373	$loggers_classes_by_id = array();
1374	$options_keys = array();
1375
1376	$loggers_classes = $this->get_loggers_classes();
1377
1378	foreach ($loggers_classes as $logger_class => $source) {
1379	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1380	}
1381
1382	$options = $this->get_options();
1383
1384	$saved_loggers = $options->get_option('logging');
1385	$logger_additional_options = $options->get_option('logging-additional');
1386
1387	// create loggers classes instances.
1388	if (!empty($saved_loggers)) {
1389	// check for previous version options format.
1390	$keys = array_keys($saved_loggers);
1391
1392	// if options stored in old format then reformat it.
1393	if (false == is_numeric($keys[0])) {
1394	$_saved_loggers = array();
1395	foreach ($saved_loggers as $logger_id => $enabled) {
1396	if ($enabled) {
1397	$_saved_loggers[] = $logger_id;
1398	}
1399	}
1400
1401	// fill email with admin.
1402	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1403	$logger_additional_options['updraft_email_logger'] = array(
1404	get_option('admin_email')
1405	);
1406	}
1407
1408	$saved_loggers = $_saved_loggers;
1409	}
1410
1411	foreach ($saved_loggers as $i => $logger_id) {
1412
1413	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1414
1415	$logger_class = $loggers_classes_by_id[$logger_id];
1416
1417	$logger = new $logger_class();
1418
1419	$logger_options = $logger->get_options_list();
1420
1421	if (!empty($logger_options)) {
1422	foreach (array_keys($logger_options) as $option_name) {
1423	if (array_key_exists($option_name, $options_keys)) {
1424	$options_keys[$option_name]++;
1425	} else {
1426	$options_keys[$option_name] = 0;
1427	}
1428
1429	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1430
1431	// if options in old format then get correct value.
1432	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1433	$option_value = array_shift($logger_additional_options[$logger_id]);
1434	}
1435
1436	$logger->set_option($option_name, $option_value);
1437	}
1438	}
1439
1440	// check if logger is active.
1441	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1442
1443	if ($active) {
1444	$logger->enable();
1445	} else {
1446	$logger->disable();
1447	}
1448
1449	$loggers[] = $logger;
1450	}
1451	}
1452
1453	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1454
1455	return $loggers;
1456	}
1457
1458	/**
1459	* Returns associative array with logger class name in a key and path to class file in a value.
1460	*
1461	* @return array
1462	*/
1463	public function get_loggers_classes() {
1464	$loggers_classes = array(
1465	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1466	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1467	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1468	);
1469
1470	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1471
1472	if (!empty($loggers_classes)) {
1473	foreach ($loggers_classes as $logger_class => $logger_file) {
1474	if (!class_exists($logger_class)) {
1475	if (is_file($logger_file)) {
1476	include_once($logger_file);
1477	}
1478	}
1479	}
1480	}
1481
1482	return $loggers_classes;
1483	}
1484
1485	/**
1486	* Returns information about all loggers classes.
1487	*
1488	* @return array
1489	*/
1490	public function get_loggers_classes_info() {
1491	$loggers_classes = $this->get_loggers_classes();
1492
1493	$loggers_classes_info = array();
1494
1495	if (!empty($loggers_classes)) {
1496	foreach (array_keys($loggers_classes) as $logger_class_name) {
1497
1498	if (!class_exists($logger_class_name)) continue;
1499
1500	$logger_id = strtolower($logger_class_name);
1501	$logger_class = new $logger_class_name();
1502
1503	$loggers_classes_info[$logger_id] = array(
1504	'description' => $logger_class->get_description(),
1505	'available' => $logger_class->is_available(),
1506	'allow_multiple' => $logger_class->is_allow_multiple(),
1507	'options' => $logger_class->get_options_list()
1508	);
1509	}
1510	}
1511
1512	return $loggers_classes_info;
1513	}
1514
1515	/**
1516	* Returns true if optimization works in multisite mode
1517	*
1518	* @return boolean
1519	*/
1520	public function is_multisite_mode() {
1521	return (is_multisite() && self::is_premium());
1522	}
1523
1524	/**
1525	* Returns true if current user can run optimizations.
1526	*
1527	* @return bool
1528	*/
1529	public function can_run_optimizations() {
1530	// we don't check permissions for cron jobs.
1531	if (defined('DOING_CRON') && DOING_CRON) return true;
1532
1533	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1534	return true;
1535	}
1536
1537	/**
1538	* Returns true if current user can manage plugin options.
1539	*
1540	* @return bool
1541	*/
1542	public function can_manage_options() {
1543	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1544	return true;
1545	}
1546
1547	/**
1548	* Returns list of all sites in multisite
1549	*
1550	* @return array
1551	*/
1552	public function get_sites() {
1553	$sites = array();
1554	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1555	if (function_exists('get_sites')) {
1556	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1557	} elseif (function_exists('wp_get_sites')) {
1558	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1559	}
1560	return $sites;
1561	}
1562
1563	/**
1564	* Returns script memory limit in megabytes.
1565	*
1566	* @param bool $memory_limit
1567	* @return int
1568	*/
1569	public function get_memory_limit($memory_limit = false) {
1570	// Returns in megabytes
1571	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1572	$memory_limit = rtrim($memory_limit);
1573
1574	return $this->return_bytes($memory_limit);
1575	}
1576
1577	/**
1578	* Returns free memory in bytes.
1579	*
1580	* @return int
1581	*/
1582	public function get_free_memory() {
1583	return $this->get_memory_limit() - memory_get_usage();
1584	}
1585
1586	/**
1587	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1588	*
1589	* @return int memory limit in bytes.
1590	*/
1591	public function get_script_memory_limit() {
1592	$memory_limit = $this->get_memory_limit();
1593
1594	if (defined('WP_MAX_MEMORY_LIMIT')) {
1595	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1596
1597	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1598	$memory_limit = $wp_memory_limit;
1599	}
1600	}
1601
1602	return $memory_limit;
1603	}
1604
1605	/**
1606	* Returns max packet size for database.
1607	*
1608	* @return int\|string
1609	*/
1610	public function get_max_packet_size() {
1611	global $wpdb;
1612	static $mp = 0;
1613
1614	if ($mp > 0) return $mp;
1615
1616	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1617	// Default to 1MB
1618	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1619	// 32MB
1620	if ($mp < 33554432) {
1621	$save = $wpdb->show_errors(false);
1622	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1623	$wpdb->show_errors($save);
1624
1625	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1626	// Default to 1MB
1627	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1628	}
1629
1630	return $mp;
1631	}
1632
1633	/**
1634	* Converts shorthand memory notation value to bytes.
1635	* From http://php.net/manual/en/function.ini-get.php
1636	*
1637	* @param string $val shorthand memory notation value.
1638	*/
1639	public function return_bytes($val) {
1640	$val = trim($val);
1641	$last = strtolower($val[strlen($val)-1]);
1642	$val = (int) $val;
1643	switch ($last) {
1644	case 'g':
1645	$val *= 1024;
1646	// no break
1647	case 'm':
1648	$val *= 1024;
1649	// no break
1650	case 'k':
1651	$val *= 1024;
1652	}
1653
1654	return $val;
1655	}
1656
1657	/**
1658	* Log fatal errors to defined log destinations.
1659	*/
1660	public function log_fatal_errors() {
1661	$last_error = error_get_last();
1662
1663	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1664	$this->get_logger()->critical($last_error['message']);
1665	}
1666	}
1667
1668	/**
1669	* Close browser connection and continue script work. - Taken from UpdraftPlus
1670	*
1671	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1672	* @return void
1673	*/
1674	public function close_browser_connection($txt = '') {
1675	if (!headers_sent()) {
1676	// Close browser connection so that it can resume AJAX polling
1677	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1678	header('Connection: close');
1679	header('Content-Encoding: none');
1680	}
1681
1682	if (session_id()) session_write_close();
1683	echo "\r\n\r\n";
1684	echo $txt;
1685	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1686	$ob_level = ob_get_level();
1687	while ($ob_level > 0) {
1688	ob_end_flush();
1689	$ob_level--;
1690	}
1691	flush();
1692	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1693	}
1694
1695	/**
1696	* Get the current theme's style.css headers
1697	*
1698	* @return array\|WP_Error
1699	*/
1700	public function get_stylesheet_headers() {
1701	static $headers;
1702	if (isset($headers)) return $headers;
1703
1704	$style = get_template_directory_uri() . '/style.css';
1705
1706	/**
1707	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1708	*
1709	* @param array $request_params Default parameters
1710	*/
1711	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1712
1713	// trying to load style.css.
1714	$response = wp_remote_get($style, $request_params);
1715
1716	if (is_a($response, 'WP_Error')) return $response;
1717
1718	$headers = wp_remote_retrieve_headers($response);
1719
1720	if (method_exists($headers, 'getAll')) {
1721	$headers = $headers->getAll();
1722	}
1723
1724	return is_array($headers) ? $headers : array();
1725	}
1726
1727	/**
1728	* Try to change PHP script time limit.
1729	*/
1730	public function change_time_limit() {
1731	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1732
1733	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1734	}
1735
1736	/**
1737	* Does the request come from UDC
1738	*
1739	* @return boolean
1740	*/
1741	public function is_updraft_central_request() {
1742	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1743	}
1744
1745	/**
1746	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1747	*
1748	* @return boolean
1749	*/
1750	public function template_should_include_data() {
1751	/**
1752	* Filters wether data should be included in certain templates or not.
1753	*/
1754	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1755	}
1756
1757	/**
1758	* Load the templates for the modal window
1759	*/
1760	public function load_modal_template() {
1761	$this->include_template('modal.php');
1762	}
1763
1764	/**
1765	* Delete transients and semaphores data from options table.
1766	*/
1767	public function delete_transients_and_semaphores() {
1768	global $wpdb;
1769
1770	$masks = array(
1771	'updraft_locked_wpo_%',
1772	'updraft_unlocked_wpo_%',
1773	'updraft_last_lock_time_wpo_%',
1774	'updraft_semaphore_wpo_%',
1775	'wpo_locked_%',
1776	'wpo_unlocked_%',
1777	'wpo_last_lock_time_%',
1778	'wpo_semaphore_%',
1779	'_transient_timeout_wpo_%',
1780	'_transient_wpo_%',
1781	'updraft_lock_wpo_%',
1782	'wpo_last_scheduled_%',
1783	);
1784
1785	$where_parts = array();
1786	foreach ($masks as $mask) {
1787	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1788	}
1789
1790	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1791	}
1792
1793	/**
1794	* Prevents bots from indexing plugins list
1795	*/
1796	public function robots_txt($output) {
1797	$upload_dir = wp_upload_dir();
1798	$path = parse_url($upload_dir['baseurl']);
1799	$output .= "\nUser-agent: *";
1800	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo-plugins-tables-list.json\n";
1801	return $output;
1802	}
1803
1804	/**
1805	* Returns desired enqueue version string
1806	*
1807	* @return string Enqueue version as string
1808	*/
1809	public function get_enqueue_version() {
1810	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1811	}
1812
1813	/**
1814	* Returns script suffix string
1815	*
1816	* @return string empty or `.min` suffix string
1817	*/
1818	public function get_min_or_not_string() {
1819	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1820	}
1821
1822	/**
1823	* Returns script suffix string with WPO_VERSION
1824	*
1825	* @return string empty or min suffix with wpo_version string
1826	*/
1827	public function get_min_or_not_internal_string() {
1828	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1829	}
1830
1831	/**
1832	* Instantiate Ajax handling class
1833	*/
1834	private function load_ajax_handler() {
1835	WPO_Ajax::get_instance();
1836	}
1837	}
1838
1839	function wpo_cron_deactivate() {
1840	WP_Optimize()->log('running wpo_cron_deactivate()');
1841	wp_clear_scheduled_hook('wpo_cron_event2');
1842	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1843	}
1844
1845	function WP_Optimize() {
1846	return WP_Optimize::instance();
1847	}
1848
1849	endif;
1850
1851	$GLOBALS['wp_optimize'] = WP_Optimize();
1852