wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 4.2.2, at wp-optimize.php

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1	<?php
2	/**
3	Plugin Name: WP-Optimize - Clean, Compress, Cache
4	Plugin URI: https://teamupdraft.com/wp-optimize
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: 4.2.2
7	Requires at least: 4.9
8	Requires PHP: 7.2
9	Update URI: https://wordpress.org/plugins/wp-optimize/
10	Author: TeamUpdraft, DavidAnderson
11	Author URI: https://teamupdraft.com
12	Text Domain: wp-optimize
13	Domain Path: /languages
14	License: GPLv2 or later
15	*/
16
17	if (!defined('ABSPATH')) die('No direct access allowed');
18
19	// Check to make sure if WP_Optimize is already call and returns.
20	if (!class_exists('WP_Optimize')) :
21	define('WPO_VERSION', '4.2.2');
22	define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
23	define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
24	define('WPO_PLUGIN_SLUG', plugin_basename(__FILE__));
25	define('WPO_PREMIUM_NOTIFICATION', false);
26	define('WPO_REQUIRED_PHP_VERSION', '7.2');
27	define('WPO_REQUIRED_WP_VERSION', '4.9');
28	if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true);
29
30	class WP_Optimize {
31
32	public $premium_version_link = 'https://getwpo.com/buy/';
33
34	private $template_directories;
35
36	protected static $_instance = null;
37
38	protected $_cache_init_status = null;
39
40	/**
41	* Class constructor
42	*/
43	public function __construct() {
44
45	spl_autoload_register(array($this, 'loader'));
46
47	// Checks if premium is installed along with plugins needed.
48	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
49
50	register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
51	register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
52	register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
53	if (!is_admin()) {
54	WPO_Page_Optimizer::instance()->initialise();
55	}
56
57	$this->load_admin();
58	add_action('admin_init', array($this, 'admin_init'));
59	add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);
60
61	add_action('init', array($this, 'schedule_plugin_cron_tasks'));
62
63	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
64	add_action('wpo_cron_event2', array($this, 'cron_action'));
65	add_filter('cron_schedules', array($this, 'cron_schedules'));
66
67	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
68
69	if (!self::is_premium()) {
70	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
71	}
72
73	add_action('admin_footer-upload.php', array($this, 'add_smush_popup_template'));
74
75	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
76
77	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
78	if ($this->get_options()->get_option('404_detector', 0)) {
79	WP_Optimize_Performance::get_instance($this->get_404_detector())->hook_404_handler();
80	}
81
82	$this->load_ajax_handler();
83	WP_Optimize_Heartbeat::get_instance();
84
85	// Show update to Premium notice for non-premium multisite.
86	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
87
88	// Action column (show repair button if need).
89	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
90
91	/**
92	* Add action for display Images > Compress images tab.
93	*/
94	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
95
96	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
97
98	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
99
100	register_shutdown_function(array($this, 'log_fatal_errors'));
101
102	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
103
104	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
105
106	$import_done_hooks = array(
107	'import_end', // wordpress importer
108	'pmxi_after_xml_import', // wp all import
109	);
110
111	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
112
113	foreach ($db_update_hooks as $hook) {
114	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
115	}
116	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
117
118	}
119
120	/**
121	* Check if minimum requirements for WP-Optimize is met or not.
122	*
123	* @return bool
124	*/
125	public function is_minimum_requirement_met() {
126	global $wp_version;
127	return (version_compare(WPO_REQUIRED_PHP_VERSION, PHP_VERSION, '<=') && version_compare(WPO_REQUIRED_WP_VERSION, $wp_version, '<='));
128	}
129
130	/**
131	* Add admin notice about minimum server requirements.
132	*/
133	public function add_notice_minimum_requirements_not_met() {
134	add_action('admin_notices', array($this, 'output_minimum_requirements_notice'));
135	}
136
137	/**
138	* Deactivate the plugin programmatically
139	*/
140	public function deactivate_plugin() {
141	if (!function_exists('deactivate_plugins')) {
142	require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
143	}
144	deactivate_plugins(plugin_basename(__FILE__));
145	}
146
147	/**
148	* Die after stating minimum requirements
149	*/
150	public function die_minimum_requirement_not_met() {
151	$message = $this->get_minimum_requirements_notice_message();
152	$message .= ' <a href="'.esc_url(admin_url('plugins.php')).'">'.esc_html__('Back to Plugins.', 'wp-optimize').'</a>';
153	wp_die(wp_kses_post($message));
154	}
155
156	/**
157	* Auto-loads classes.
158	*
159	* @param string $class_name The name of the class.
160	*/
161	private function loader($class_name) {
162	$dirs = $this->get_class_directories();
163
164	foreach ($dirs as $dir) {
165	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
166	if (file_exists($class_file)) {
167	require_once($class_file);
168	return;
169	}
170
171	$interface_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'interface-' . str_replace('_', '-', strtolower($class_name)) . '.php';
172	if (file_exists($interface_file)) {
173	require_once($interface_file);
174	return;
175	}
176	}
177
178	// Include PHP Minify - https://github.com/matthiasmullie/minify
179	if (strpos($class_name, 'MatthiasMullie') !== false) {
180	$class_name_parts = explode('\\', $class_name);
181	$class_file = WPO_PLUGIN_MAIN_PATH.'vendor/'.strtolower($class_name_parts[0]).'/'.strtolower(preg_replace('/([a-z])([A-Z])/', '$1-$2', $class_name_parts[1])).'/src/'.implode('/', array_slice($class_name_parts, 2)).'.php';
182	if (file_exists($class_file)) {
183	require_once($class_file);
184	return;
185	}
186	}
187
188	if ('Minify_HTML' == $class_name) {
189	require_once WPO_PLUGIN_MAIN_PATH.'vendor/mrclay/minify/lib/Minify/HTML.php';
190	return;
191	}
192	}
193
194	/**
195	* Returns an array of class directories
196	*
197	* @return array
198	*/
199	private function get_class_directories() {
200	return array(
201	'cache',
202	'compatibility',
203	'includes',
204	'includes/tables',
205	'includes/list-tables',
206	'includes/gravatars',
207	'minify',
208	'optimizations',
209	'webp',
210	);
211	}
212
213	/**
214	* Initialize Admin class to load admin UI
215	*/
216	private function load_admin() {
217	$this->get_admin_instance();
218	}
219
220	/**
221	* Returns Admin class instance
222	*
223	* @return WP_Optimize_Admin
224	*/
225	public function get_admin_instance() {
226	return WP_Optimize_Admin::instance();
227	}
228
229	/**
230	* Detect when an active plugin or theme is updated, and trigger an action
231	*
232	* @param object $upgrader_object
233	* @param array $options
234	* @return void
235	*/
236	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
237	if (empty($options) \|\| !isset($options['type'])) return;
238
239	$should_purge_cache = false;
240	$skin = $upgrader_object->skin;
241	if ('plugin' === $options['type']) {
242	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
243	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
244	$should_purge_cache = true;
245	}
246	} elseif ('theme' === $options['type']) {
247	$active_theme = get_stylesheet();
248	$parent_theme = get_template();
249	// A theme is updated using the upload system
250	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
251	$updated_theme = $upgrader_object->result['destination_name'];
252	// Check if the theme is in use
253	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
254	$should_purge_cache = true;
255	}
256	// A theme is updated using the classic update system
257	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
258	// Check if the theme is in use
259	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
260	$should_purge_cache = true;
261	}
262	}
263	}
264
265	/**
266	* Action executed when an active theme or plugin was updated
267	*/
268	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
269
270	}
271
272	/**
273	* Sets a flag to indicate an import action is done, if needed
274	*/
275	public function maybe_schedule_update_record_count_event() {
276	if (!wp_next_scheduled('wpo_update_record_count_event')) {
277	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
278	}
279	}
280
281	public function admin_page_wpo_images_smush() {
282	$options = Updraft_Smush_Manager()->get_smush_options();
283	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
284	$sites = WP_Optimize()->get_sites();
285	$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
286	$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(), 'compression_server_hint' => $compression_server_hint));
287	$this->add_smush_popup_template();
288	}
289
290	public static function instance() {
291	if (empty(self::$_instance)) {
292	self::$_instance = new self();
293	}
294	return self::$_instance;
295	}
296
297	public function get_optimizer() {
298	return WP_Optimizer::instance();
299	}
300
301	/**
302	* Adds 3rd party plugin compatibilities.
303	*/
304	public function load_compatibilities() {
305	WPO_Polylang_Compatibility::instance();
306	WPO_Page_Builder_Compatibility::instance();
307	WPO_Custom_Permalink_Compatibility::instance();
308	WPO_TranslatePress_Compatibility::instance();
309
310	do_action('wpo_load_compatibilities');
311	}
312
313	/**
314	* Get and instantiate WP_Optimize_Minify
315	*
316	* @return WP_Optimize_Minify
317	*/
318	public function get_minify() {
319	return WP_Optimize_Minify::instance();
320	}
321
322	public function get_options() {
323	return WP_Optimize_Options::instance();
324	}
325
326	public function get_notices() {
327	return WP_Optimize_Notices::instance();
328	}
329
330	/**
331	* Get and instantiate WP_Optimize_Delay_JS
332	*
333	* @return WP_Optimize_Delay_JS
334	*/
335	private function get_delay_js() {
336	return WP_Optimize_Delay_JS::instance();
337	}
338
339	/**
340	* Returns instance if WPO_Page_Cache class.
341	*
342	* @return WPO_Page_Cache
343	*/
344	public function get_page_cache() {
345	return WPO_Page_Cache::instance();
346	}
347
348	/**
349	* Returns instance if WP_Optimize_WebP class.
350	*
351	* @return WP_Optimize_WebP
352	*/
353	public function get_webp_instance() {
354	return WP_Optimize_WebP::get_instance();
355	}
356
357	/**
358	* Detects if the platform is Kinsta or not
359	*
360	* @return bool Returns true if it is Kinsta platform, otherwise returns false
361	*/
362	private function is_kinsta() {
363	return isset($_SERVER['KINSTA_CACHE_ZONE']);
364	}
365
366	/**
367	* Detects whether the server handles cache. eg. Nginx cache
368	*/
369	public function does_server_handles_cache() {
370	return $this->is_kinsta();
371	}
372
373	/**
374	* Detects whether the server supports table optimization.
375	*
376	* Some servers prevent table optimization
377	* because InnoDB engine does not optimize table
378	* instead it drops tables and recreate them
379	* which results in elevated disk write operations
380	*/
381	public function does_server_allows_table_optimization() {
382	return !$this->is_kinsta();
383	}
384
385	/**
386	* Detects whether the server supports local webp conversion tools
387	*/
388	private function does_server_allows_local_webp_conversion() {
389	return !$this->is_kinsta();
390	}
391
392	/**
393	* Create instance of WP_Optimize_Browser_Cache.
394	*
395	* @return WP_Optimize_Browser_Cache
396	*/
397	public function get_browser_cache() {
398	return WP_Optimize_Browser_Cache::instance();
399	}
400
401	/**
402	* Returns WP_Optimize_Database_Information instance.
403	*
404	* @return WP_Optimize_Database_Information
405	*/
406	public function get_db_info() {
407	return WP_Optimize_Database_Information::instance();
408	}
409
410	/**
411	* Returns instance of WP_Optimize_Gzip_Compression.
412	*
413	* @return WP_Optimize_Gzip_Compression
414	*/
415	public function get_gzip_compression() {
416	return WP_Optimize_Gzip_Compression::instance();
417	}
418
419	/**
420	* Create instance of WP_Optimize_Htaccess.
421	*
422	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
423	* @return WP_Optimize_Htaccess
424	*/
425	public static function get_htaccess($htaccess_file = '') {
426	return new WP_Optimize_Htaccess($htaccess_file);
427	}
428
429	/**
430	* Return instance of Updraft_Logger
431	*
432	* @return Updraft_Logger
433	*/
434	public function get_logger() {
435	return Updraft_Logger::instance();
436	}
437
438	/**
439	* Check if the current page belongs to WP-Optimize.
440	*
441	* @return bool
442	*/
443	public function is_wpo_page() {
444	$current_screen = get_current_screen();
445
446	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
447	}
448
449	/**
450	* Enqueue scripts and styles on WP-Optimize pages.
451	*/
452	public function admin_enqueue_scripts() {
453	$enqueue_version = $this->get_enqueue_version();
454	$min_or_not = $this->get_min_or_not_string();
455	$min_or_not_internal = $this->get_min_or_not_internal_string();
456
457	// Register or enqueue common scripts
458	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
459	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
460	wp_register_script('wp-optimize-block-ui', WPO_PLUGIN_URL.'js/blockUI'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version);
461	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
462
463	// load scripts and styles only on WP-Optimize pages.
464	if (!$this->is_wpo_page()) return;
465
466	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
467
468	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
469
470	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
471	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js', 'wp-optimize-block-ui'), $enqueue_version);
472	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js', 'wp-optimize-heartbeat-js'), $enqueue_version);
473	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
474	// Using tablesorter to help with organising the DB size on Table Information
475	// https://github.com/tofsjonas/sortable/
476	wp_enqueue_script('sortable-js', WPO_PLUGIN_URL.'js/sortable/sortable'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
477	wp_enqueue_script('sortable-a11y-js', WPO_PLUGIN_URL.'js/sortable/sortable.a11y'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
478
479	wp_enqueue_style('sortable-css', WPO_PLUGIN_URL.'css/sortable/sortable'.$min_or_not_internal.'.css', array(), $enqueue_version);
480
481	$js_variables = $this->wpo_js_translations();
482	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
483	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
484
485	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
486
487	wp_enqueue_script('wp-optimize-status-report', WPO_PLUGIN_URL.'js/status'.$min_or_not_internal.'.js', array('wp-api-fetch', 'wp-optimize-admin-js'), $enqueue_version);
488
489	wp_enqueue_script('js-zip', WPO_PLUGIN_URL.'/js/jszip/jszip' . $min_or_not . '.js', array(), $enqueue_version);
490	}
491
492	/**
493	* Enqueue any required front-end scripts
494	*
495	* @return void
496	*/
497	public function frontend_enqueue_scripts() {
498	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
499	$enqueue_version = $this->get_enqueue_version();
500	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
501
502	// Register or enqueue common scripts
503	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
504	}
505
506	/**
507	* Load Task Manager
508	*/
509	public function get_task_manager() {
510	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
511
512	Updraft_Tasks_Activation::check_updates();
513
514	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
515	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
516	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
517
518	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
519	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
520
521	return Updraft_Smush_Manager();
522	}
523
524	/**
525	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
526	*
527	* @returns Boolean
528	*/
529	public static function is_premium() {
530	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
531	$wp_optimize_premium = WP_Optimize_Premium();
532	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
533	}
534	return false;
535	}
536
537	/**
538	* 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.
539	*
540	* @return bool
541	*/
542	public function is_apache_server() {
543	global $is_apache;
544	return $is_apache;
545	}
546
547	/**
548	* Check if script running on IIS web server.
549	*
550	* @return bool
551	*/
552	public function is_IIS_server() {
553	global $is_IIS, $is_iis7;
554	return $is_IIS \|\| $is_iis7;
555	}
556
557	/**
558	* Check if Apache module or modules active.
559	*
560	* @param string\|array $module - single Apache module name or list of Apache module names.
561	*
562	* @return bool\|null - if null, the result was indeterminate
563	*/
564	public function is_apache_module_loaded($module) {
565	if (!$this->is_apache_server()) return false;
566
567	if (!function_exists('apache_get_modules')) return null;
568
569	$module_loaded = true;
570
571	if (is_array($module)) {
572	foreach ($module as $single_module) {
573	if (!in_array($single_module, apache_get_modules())) {
574	$module_loaded = false;
575	break;
576	}
577	}
578	} else {
579	$module_loaded = in_array($module, apache_get_modules());
580	}
581
582	return $module_loaded;
583	}
584
585	/**
586	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
587	*/
588	public function plugins_loaded() {
589
590	if (!$this->is_minimum_requirement_met()) {
591	$this->add_notice_minimum_requirements_not_met();
592	$this->deactivate_plugin();
593	WPO_Deactivation::actions();
594	return;
595	}
596
597	if ($this->does_server_handles_cache()) {
598	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
599
600	// If newly migrated to server that handles cache, disable wpo cache
601	$cache = $this->get_page_cache();
602	if ($cache->is_enabled()) {
603	$cache->disable();
604	}
605	}
606
607	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
608
609	// Run Premium loader if it exists
610	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
611	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
612	}
613
614	// load defaults
615	WP_Optimize()->get_options()->set_default_options();
616
617	// Initialize loggers.
618	$this->setup_loggers();
619
620	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
621	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
622	deactivate_plugins($free_plugin);
623
624	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
625	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
626	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
627
628	if (!is_file($advanced_cache_filename) && wp_is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && wp_is_writable($advanced_cache_filename))) {
629	file_put_contents($advanced_cache_filename, '');
630	}
631	}
632
633	// Registers the notice letting the user know it cannot be active if premium is active.
634	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
635	return;
636	}
637
638	// Loads the task manager
639	$this->get_task_manager();
640
641	add_action('init', array($this, 'load_language_file'), 0);
642
643	// Load 3rd party plugin compatibilities.
644	$this->load_compatibilities();
645
646	// Load page cache.
647	$this->get_page_cache();
648
649	// We use the init hook to avoid the _load_textdomain_just_in_time warning,
650	// which is triggered because we use translations during cache initialization
651	add_action('init', array($this, 'init_page_cache'), 1);
652
653	// Include minify
654	$this->get_minify();
655
656	// Include delay js
657	$this->get_delay_js();
658
659	$this->run_updates();
660
661	// We need this here because webp can be unavailable because of server moves
662	// This deletes already converted webp images and original image file when a media is deleted
663	WP_Optimize_WebP_Images::get_instance();
664
665	// Include WebP
666	if (WPO_USE_WEBP_CONVERSION) {
667	$this->get_webp_instance();
668	}
669
670	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
671	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
672	}
673
674	/**
675	* Loads the language file.
676	*
677	* @return void
678	*/
679	public function load_language_file() {
680	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
681	}
682
683	/**
684	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
685	* (e.g. "central" folder)
686	*
687	* @param array $hosts List of plugins having the "central" library integrated into them
688	*
689	* @return array
690	*/
691	public function attach_updraftcentral_host($hosts) {
692	$hosts[] = 'wp-optimize';
693	return $hosts;
694	}
695
696	/**
697	* Filter cache tabs (when it is Kinsta)
698	*
699	* @param array $tabs An array of tabs
700	*
701	* @return array $tabs An array of tabs
702	*/
703	public function filter_cache_tabs($tabs) {
704	unset($tabs['preload']);
705	unset($tabs['advanced']);
706	unset($tabs['gzip']);
707	unset($tabs['settings']);
708	return $tabs;
709	}
710
711	/**
712	* Check whether one of free/Premium is active (whether it is this instance or not)
713	*
714	* @param String $which - 'free' or 'premium'
715	*
716	* @return String\|Boolean - plugin path (if installed) or false if not
717	*/
718	private function is_active($which = 'free') {
719	$active_plugins = $this->get_active_plugins();
720	foreach ($active_plugins as $file) {
721	if ('wp-optimize.php' == basename($file)) {
722	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
723	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
724	}
725	}
726	return false;
727	}
728
729	/**
730	* Gets an array of plugins active on either the current site, or site-wide
731	*
732	* @return Array - a list of plugin paths (relative to the plugin directory)
733	*/
734	private function get_active_plugins() {
735
736	// Gets all active plugins on the current site
737	$active_plugins = (array) get_option('active_plugins', array());
738
739	if (is_multisite()) {
740	$network_active_plugins = get_site_option('active_sitewide_plugins');
741	if (!empty($network_active_plugins)) {
742	$network_active_plugins = array_keys($network_active_plugins);
743	$active_plugins = array_merge($active_plugins, $network_active_plugins);
744	}
745	}
746
747	return $active_plugins;
748	}
749
750	/**
751	* This function checks whether a specific plugin is installed, and returns information about it
752	*
753	* @param string $name Specify "Plugin Name" to return details about it.
754	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
755	*/
756	public function is_installed($name) {
757
758	// Needed to have the 'get_plugins()' function
759	include_once(ABSPATH.'wp-admin/includes/plugin.php');
760
761	// Gets all plugins available
762	$get_plugins = get_plugins();
763
764	$active_plugins = $this->get_active_plugins();
765
766	$plugin_info = array();
767	$plugin_info['installed'] = false;
768	$plugin_info['active'] = false;
769
770	// Loops around each plugin available.
771	foreach ($get_plugins as $key => $value) {
772	// If the plugin name matches that of the specified name, it will gather details.
773	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
774	$plugin_info['installed'] = true;
775	$plugin_info['name'] = $key;
776	$plugin_info['version'] = $value['Version'];
777	if (in_array($key, $active_plugins)) {
778	$plugin_info['active'] = true;
779	}
780	break;
781	}
782	return $plugin_info;
783	}
784
785	/**
786	* This is a notice to show users that premium is installed
787	*/
788	public function show_admin_notice_premium() {
789	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.esc_html__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
790	if (isset($_GET['activate'])) unset($_GET['activate']);
791	}
792
793	/**
794	* Show update to Premium notice for non-premium multisite.
795	*/
796	public function show_multisite_update_to_premium_notice() {
797	if (!is_multisite() \|\| self::is_premium()) return;
798
799	echo '<p><a href="'.esc_url($this->premium_version_link).'">'.esc_html__('New feature: WP-Optimize Premium can now optimize all sites within a multisite install, not just the main one.', 'wp-optimize').'</a></p>';
800	}
801
802	public function admin_init() {
803	$pagenow = $GLOBALS['pagenow'];
804
805	$this->register_template_directories();
806
807	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
808	$options = $this->get_options();
809
810	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
811
812	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
813	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
814	$installed_for = (time() - $installed);
815	}
816
817	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
818	add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
819	}
820	}
821
822	if ($this->is_wp_smush_installed()) {
823	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
824	}
825	if ($this->get_options()->get_option('404_detector', 0)) {
826	WP_Optimize_Performance::get_instance($this->get_404_detector())->init();
827	}
828	}
829
830	/**
831	* Checks whether the WP Smush plugin is active or not
832	*
833	* @return bool
834	*/
835	private function is_wp_smush_installed() {
836	return is_plugin_active('wp-smushit/wp-smush.php');
837	}
838
839	/**
840	* Remove WPO plugin name from WP Smushit transient value
841	*
842	* @return array $active_plugins
843	*/
844	public function modify_wp_smush_conflict_check($active_plugins) {
845	// This can be boolean value since it is return value of get_transient
846	if (!is_array($active_plugins)) return $active_plugins;
847
848	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
849	unset($active_plugins[$key]);
850	}
851	return $active_plugins;
852	}
853
854	/**
855	* Get the install or update notice instance
856	*
857	* @return WP_Optimize_Install_Or_Update_Notice
858	*/
859	public function get_install_or_update_notice() {
860	static $instance = null;
861	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
862	$instance = new WP_Optimize_Install_Or_Update_Notice();
863	return $instance;
864	}
865
866	/**
867	* Display an admin notice for an upgraded version.
868	*/
869	public function show_admin_notice_upgraded() {
870	$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
871	'is_premium' => WP_Optimize::is_premium()
872	));
873	}
874
875	public function capability_required() {
876	return apply_filters('wp_optimize_capability_required', 'manage_options');
877	}
878
879	/**
880	* Returns array of translations used in javascript code.
881	*
882	* @return array
883	*/
884	public function wpo_js_translations() {
885	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
886	return apply_filters('wpo_js_translations', array(
887	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
888	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
889	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
890	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
891	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
892	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
893	'table_optimization_timeout' => 120000,
894	'add' => __('Add', 'wp-optimize'),
895	'cancel' => __('Cancel', 'wp-optimize'),
896	'cancelling' => __('Cancelling...', 'wp-optimize'),
897	'enable' => __('Enable', 'wp-optimize'),
898	'disable' => __('Disable', 'wp-optimize'),
899	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
900	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
901	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
902	// translators: %s is the table name
903	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
904	// translators: %s is the table name
905	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
906	// translators: %s is the table name
907	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
908	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
909	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
910	'update' => __('Update', 'wp-optimize'),
911	'run_now' => __('Run now', 'wp-optimize'),
912	'starting_preload' => __('Started preload...', 'wp-optimize'),
913	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
914	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
915	'number_of_files' => __('Number of files:', 'wp-optimize'),
916	'toggle_info' => __('Show information', 'wp-optimize'),
917	'delete_file' => __('Delete', 'wp-optimize'),
918	'deleting' => __('Deleting...', 'wp-optimize'),
919	'added_to_list' => __('Added to the list', 'wp-optimize'),
920	'added_notice' => __('The file was added to the list', 'wp-optimize'),
921	'save_notice' => __('Save the changes', 'wp-optimize'),
922	'saving' => __('Saving...', 'wp-optimize'),
923	'clearing_cache' => __('Clearing cache...', 'wp-optimize'),
924	'creating_cache' => __('Creating cache...', 'wp-optimize'),
925	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
926	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
927	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
928	'loading_data' => __('Loading data...', 'wp-optimize'),
929	'spinner_src' => esc_url(admin_url('images/spinner-2x.gif')),
930	'logo_src' => esc_url(WPO_PLUGIN_URL.'images/notices/wp_optimize_logo.png'),
931	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
932	'sites' => $this->get_sites(),
933	'user_always_ignores_table_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-deletion-warning', true)) ? true : false,
934	'user_always_ignores_post_meta_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-post-meta-deletion-warning', true)) ? true : false,
935	'user_always_ignores_orphaned_relationship_data_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-orphaned-relationship-data-deletion-warning', true)) ? true : false,
936	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
937	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
938	'network_site_url' => network_site_url(),
939	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
940	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
941	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
942	'importing' => __('Importing...', 'wp-optimize'),
943	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
944	'exported_on' => __('Which was exported on:', 'wp-optimize'),
945	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
946	'select_destination' => __('Select destination', 'wp-optimize'),
947	'show' => __('Show', 'wp-optimize'),
948	'hide' => __('Hide', 'wp-optimize'),
949	'please_wait' => __('Please wait a moment...', 'wp-optimize'),
950	'clipboard_failed' => __('Copy to clipboard failed, please do it manually', 'wp-optimize'),
951	'clipboard_success' => __('System status has been copied to the clipboard', 'wp-optimize'),
952	'show_information' => __('Show information', 'wp-optimize'),
953	'hide_information' => __('Hide information', 'wp-optimize'),
954	'data_not_available' => __('Not available', 'wp-optimize')
955	));
956	}
957
958	/**
959	* Manages the admin bar menu for caching (currently page and minify)
960	*/
961	public function cache_admin_bar($wp_admin_bar) {
962
963	$options = $this->get_options();
964	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
965
966	/**
967	* The "purge cache" menu items
968	*
969	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
970	* @param object $wp_admin_bar
971	*/
972	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
973
974	if (empty($menu_items) \|\| !is_array($menu_items)) return;
975
976	$wp_admin_bar->add_menu(array(
977	'id' => 'wpo_purge_cache',
978	'title' => __('Purge cache', 'wp-optimize'),
979	'href' => '#',
980	'meta' => array(
981	'title' => __('Purge cache', 'wp-optimize'),
982	),
983	'parent' => false,
984	));
985
986	foreach ($menu_items as $item) {
987	$wp_admin_bar->add_menu($item);
988	}
989	}
990
991	/**
992	* Add settings link on plugin page
993	*
994	* @param string $links Passing through the URL to be used within the HREF.
995	* @return string Returns the Links.
996	*/
997	public function plugin_settings_link($links) {
998
999	$admin_page_url = $this->get_options()->admin_page_url();
1000	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
1001
1002	if (false == self::is_premium()) {
1003	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
1004	array_unshift($links, $premium_link);
1005	}
1006
1007	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
1008	array_unshift($links, $settings_link);
1009
1010	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
1011	array_unshift($links, $optimize_link);
1012	return $links;
1013	}
1014
1015	/**
1016	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
1017	*
1018	* @param string $content String for output to column
1019	* @param object $table_info Object with table info.
1020	*
1021	* @return string
1022	*/
1023	public function tables_list_additional_column_data($content, $table_info) {
1024	if ($table_info->is_needing_repair) {
1025	$content .= '<div class="wpo_button_wrap">'
1026	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
1027	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A
1028	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1029	. '</div>';
1030	}
1031
1032	// table belongs to plugin.
1033	if ($table_info->can_be_removed) {
1034	$content .= '<div>'
1035	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
1036	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A
1037	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1038	. '</div>';
1039	}
1040
1041	// Add option for MyISAM to InnoDB conversion.
1042	if ('MyISAM' == $table_info->Engine) {
1043	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
1044	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
1045	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A
1046	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1047	. '</div>';
1048
1049	}
1050
1051	return $content;
1052	}
1053
1054	/**
1055	* Initialize WP-Optimize page cache.
1056	*/
1057	public function init_page_cache() {
1058	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
1059	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
1060	$this->_cache_init_status = $this->get_page_cache()->enable();
1061	}
1062	}
1063	}
1064
1065	/**
1066	* Get init_page_cache() status.
1067	*
1068	* @return bool
1069	*/
1070	public function get_init_page_cache_status() {
1071	return $this->_cache_init_status;
1072	}
1073
1074	/**
1075	* Schedules cron event based on selected schedule type
1076	*
1077	* @return void
1078	*/
1079	public function cron_activate() {
1080	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
1081
1082	$options = $this->get_options();
1083
1084	if ($options->get_option('schedule') === false) {
1085	$options->set_default_options();
1086	} else {
1087	if ('true' == $options->get_option('schedule')) {
1088	if (!wp_next_scheduled('wpo_cron_event2')) {
1089	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
1090
1091	// Backward compatibility
1092	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
1093
1094	$this_time = (86400 * 7);
1095
1096	switch ($schedule_type) {
1097	case "wpo_daily":
1098	$this_time = 86400;
1099	break;
1100
1101	case "wpo_weekly":
1102	$this_time = (86400 * 7);
1103	break;
1104
1105	case "wpo_fortnightly":
1106	$this_time = (86400 * 14);
1107	break;
1108
1109	case "wpo_monthly":
1110	$this_time = (86400 * 30);
1111	break;
1112	}
1113
1114	add_action('wpo_cron_event2', array($this, 'cron_action'));
1115	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1116	WP_Optimize()->log('running wp_schedule_event()');
1117	if (is_wp_error($result)) {
1118	$error_msg = $result->get_error_message();
1119	WP_Optimize()->log($error_msg);
1120	WP_Optimize()->log(print_r($result, true));
1121	} else {
1122	WP_Optimize()->log($result);
1123	}
1124	}
1125	}
1126	}
1127	}
1128
1129	/**
1130	* Clears all cron events
1131	*
1132	* @return void
1133	*/
1134	public function wpo_cron_deactivate() {
1135	$cron_jobs = _get_cron_array();
1136	foreach ($cron_jobs as $job) {
1137	foreach (array_keys($job) as $hook) {
1138	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1139	}
1140	}
1141	}
1142
1143	/**
1144	* Scheduler public functions to update schedulers
1145	*
1146	* @param array $schedules An array of schedules being passed.
1147	* @return array An array of schedules being returned.
1148	*/
1149	public function cron_schedules($schedules) {
1150	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1151	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1152	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1153	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1154	return $schedules;
1155	}
1156
1157	/**
1158	* Returns count of overdue cron jobs.
1159	*
1160	* @return integer
1161	*/
1162	public function howmany_overdue_crons() {
1163	$how_many_overdue = 0;
1164	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1165	$crons = _get_cron_array();
1166	if (is_array($crons)) {
1167	$timenow = time();
1168	foreach ($crons as $jt => $job) {
1169	if ($jt < $timenow) {
1170	$how_many_overdue++;
1171	}
1172	}
1173	}
1174	}
1175	return $how_many_overdue;
1176	}
1177
1178	/**
1179	* Run updates on plugin activation.
1180	*/
1181	public function run_updates() {
1182	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1183	WP_Optimize_Updates::check_updates();
1184	}
1185
1186	/**
1187	* Returns warning about overdue crons.
1188	*
1189	* @param int $howmany count of overdue crons
1190	* @return string
1191	*/
1192	public function show_admin_warning_overdue_crons($howmany) {
1193	$ret = '<div class="updated below-h2"><p>';
1194	// translators: %d is number of overdue cron jobs
1195	$ret .= '<strong>'.esc_html__('Warning', 'wp-optimize').':</strong> '.sprintf(esc_html__('WordPress has a number (%d) of scheduled tasks which are overdue.', 'wp-optimize'), $howmany).' '. esc_html__('Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize').' <a target="_blank" href="'.esc_url(apply_filters('wpoptimize_com_link', "https://getwpo.com/faqs/the-scheduler-in-my-wordpress-installation-is-not-working-what-should-i-do/")).'">'.esc_html__('Read this page for a guide to possible causes and how to fix it.', 'wp-optimize').'</a>';
1196	$ret .= '</p></div>';
1197	return $ret;
1198	}
1199
1200	private function wp_normalize_path($path) {
1201	// Wp_normalize_path is not present before WP 3.9.
1202	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1203	// Taken from WP 4.6.
1204	$path = str_replace('\\', '/', $path);
1205	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1206	if (':' === substr($path, 1, 1)) {
1207	$path = ucfirst($path);
1208	}
1209	return $path;
1210	}
1211
1212	public function get_templates_dir() {
1213	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1214	}
1215
1216	public function get_templates_url() {
1217	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1218	}
1219
1220	/**
1221	* Return or output view content
1222	*
1223	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1224	* @param Boolean $return_instead_of_echo - what to do with the results
1225	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1226	*
1227	* @return String\|Void
1228	*/
1229	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1230	if ($return_instead_of_echo) ob_start();
1231
1232	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1233	$prefix = $matches[1];
1234	$suffix = $matches[2];
1235	if (isset($this->template_directories[$prefix])) {
1236	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1237	}
1238	}
1239
1240	if (!isset($template_file)) {
1241	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1242	}
1243
1244	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1245
1246	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1247
1248	if (!file_exists($template_file)) {
1249	error_log("WP Optimize: template not found: ".$template_file);
1250	echo esc_html__('Error:', 'wp-optimize').' '.esc_html__('template not found', 'wp-optimize')." (".esc_html($path).")";
1251	} else {
1252	extract($extract_these);
1253	// The following are useful variables which can be used in the template.
1254	// They appear as unused, but may be used in the $template_file.
1255	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1256	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1257	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1258	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1259	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1260	include $template_file;
1261	}
1262
1263	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1264
1265	if ($return_instead_of_echo) return ob_get_clean();
1266	}
1267
1268	/**
1269	* Build a list of template directories (stored in self::$template_directories)
1270	*/
1271	private function register_template_directories() {
1272
1273	$template_directories = array();
1274
1275	$templates_dir = $this->get_templates_dir();
1276
1277	if ($dh = opendir($templates_dir)) {
1278	while (($file = readdir($dh)) !== false) {
1279	if ('.' == $file \|\| '..' == $file) continue;
1280	if (is_dir($templates_dir.'/'.$file)) {
1281	$template_directories[$file] = $templates_dir.'/'.$file;
1282	}
1283	}
1284	closedir($dh);
1285	}
1286
1287	// Optimal hook for most extensions to hook into.
1288	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1289
1290	}
1291
1292	/**
1293	* Message to debug
1294	*
1295	* @param string $message Message to insert into the log.
1296	* @param array $context array with variables used in $message like in template,
1297	* for ex.
1298	* $message = 'Hello {message}';
1299	* $context = ['message' => 'world']
1300	* 'Hello world' string will be saved in log.
1301	*/
1302	public function log($message, $context = array()) {
1303	$this->get_logger()->debug($message, $context);
1304	}
1305
1306	/**
1307	* Format Bytes Into KB/MB
1308	*
1309	* @param mixed $bytes Number of bytes to be converted.
1310	* @param integer $decimals the number of decimal digits
1311	* @return integer return the correct format size.
1312	*/
1313	public function format_size($bytes, $decimals = 2) {
1314	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1315
1316	if (1073741824 <= $bytes) {
1317	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1318	} elseif (1048576 <= $bytes) {
1319	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1320	} elseif (1024 <= $bytes) {
1321	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1322	} elseif (1 < $bytes) {
1323	$bytes = $bytes . ' bytes';
1324	} elseif (1 == $bytes) {
1325	$bytes = $bytes . ' byte';
1326	} else {
1327	$bytes = '0 bytes';
1328	}
1329
1330	return $bytes;
1331	}
1332
1333	/**
1334	* Format a timestamp into a juman readable date time
1335	*
1336	* @param int $timestamp Epoch timestamp to convert
1337	* @param string $separator String separator
1338	* @return string
1339	*/
1340	public function format_date_time($timestamp, $separator = ' @ ') {
1341	return date_i18n(get_option('date_format'). $separator .get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1342	}
1343
1344	/**
1345	* Executed this function on cron event.
1346	*
1347	* @return void
1348	*/
1349	public function cron_action() {
1350
1351	$optimizer = $this->get_optimizer();
1352	$options = $this->get_options();
1353
1354	$this->log('WPO: Starting cron_action()');
1355	$options->update_option('last-optimized', time());
1356	if ('true' == $options->get_option('schedule')) {
1357	$this_options = $options->get_option('auto');
1358
1359	// Currently the output of the optimizations is not saved/used/logged.
1360	$optimizer->do_optimizations($this_options, 'auto');
1361	}
1362
1363	}
1364
1365	/**
1366	* Schedule cron tasks used by plugin.
1367	*
1368	* @return void
1369	*/
1370	public function schedule_plugin_cron_tasks() {
1371	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1372	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1373	}
1374
1375	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1376	WP_Optimize_404_Detector_Cron::get_instance();
1377	}
1378
1379	/**
1380	* Do plugin background tasks.
1381	*
1382	* @return void
1383	*/
1384	public function do_weekly_cron_tasks() {
1385	// add tasks here.
1386	$this->get_db_info()->update_plugin_json();
1387	}
1388
1389	/**
1390	* This will customize a URL with a correct Affiliate link
1391	* This function can be update to suit any URL as longs as the URL is passed
1392	*
1393	* @param String $url - URL to be check to see if it an updraftplus match.
1394	* @param String $text - Text to be entered within the href a tags.
1395	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1396	* @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"').
1397	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1398	* @return String\|void
1399	*/
1400	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1401	// Check if the URL is UpdraftPlus.
1402	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1403
1404	// Check if the variable $text is empty (null value included), otherwise assign $html.
1405	$content = empty($text) ? $html : esc_html($text);
1406
1407	// Check if $attrs is an array to convert the attributes into a string line.
1408	$str_attrs = '';
1409	if (is_array($attrs)) {
1410	foreach ($attrs as $attr => $value) {
1411	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1412	}
1413	} else {
1414	// If $attrs is empty, the explode function will only return an empty array.
1415	$attrs = explode('=', $attrs);
1416	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1417	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1418	}
1419
1420	// Check if it is necessary to add a target value if the url is external
1421	$is_external_url = $this->is_external_url($url);
1422	if ($is_external_url) {
1423	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1424	$str_attrs .= ' target="_blank"';
1425	}
1426
1427	$result = sprintf(
1428	'<a href="%s" %s>%s</a>',
1429	esc_url($url),
1430	$str_attrs,
1431	wp_kses_post($content)
1432	);
1433
1434	if ($return_instead_of_echo) return $result;
1435	echo wp_kses_post($result);
1436	}
1437
1438	/**
1439	* Check if a URL is external
1440	*
1441	* @param string $url
1442	* @return string
1443	*/
1444	public function is_external_url($url) {
1445	if (empty($url)) {
1446	return false;
1447	}
1448
1449	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1450	$url = wp_parse_url($url, PHP_URL_HOST);
1451
1452	// Compare the domains and return true if they are different
1453	return $current_domain !== $url;
1454	}
1455
1456	/**
1457	* Get an URL with an eventual affiliate ID
1458	*
1459	* @param string $url
1460	* @return string
1461	*/
1462	public function maybe_add_affiliate_params($url) {
1463	// Check if the URL is UpdraftPlus.
1464	if (false !== strpos($url, '//updraftplus.com')) {
1465	// Set URL with Affiliate ID.
1466	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1467
1468	// Apply filters.
1469	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1470	}
1471	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1472	}
1473
1474	/**
1475	* Setup WPO logger(s)
1476	*/
1477	public function setup_loggers() {
1478
1479	$logger = $this->get_logger();
1480	$loggers = $this->wpo_loggers();
1481
1482	if (!empty($loggers)) {
1483	foreach ($loggers as $_logger) {
1484	$logger->add_logger($_logger);
1485	}
1486	}
1487
1488	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1489	}
1490
1491	/**
1492	* Run logger actions after all optimizations done
1493	*/
1494	public function after_optimizations_logger_action() {
1495	$loggers = $this->get_logger()->get_loggers();
1496	if (!empty($loggers)) {
1497	foreach ($loggers as $logger) {
1498	if (is_a($logger, 'Updraft_Email_Logger')) {
1499	$logger->flush_log();
1500	}
1501	}
1502	}
1503	}
1504
1505	/**
1506	* Returns list of WPO loggers instances
1507	* Apply filter wp_optimize_loggers
1508	*
1509	* @return array
1510	*/
1511	public function wpo_loggers() {
1512
1513	$loggers = array();
1514	$loggers_classes_by_id = array();
1515	$options_keys = array();
1516
1517	$loggers_classes = $this->get_loggers_classes();
1518
1519	foreach ($loggers_classes as $logger_class => $source) {
1520	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1521	}
1522
1523	$options = $this->get_options();
1524
1525	$saved_loggers = $options->get_option('logging');
1526	$logger_additional_options = $options->get_option('logging-additional');
1527
1528	// create loggers classes instances.
1529	if (!empty($saved_loggers)) {
1530	// check for previous version options format.
1531	$keys = array_keys($saved_loggers);
1532
1533	// if options stored in old format then reformat it.
1534	if (false == is_numeric($keys[0])) {
1535	$_saved_loggers = array();
1536	foreach ($saved_loggers as $logger_id => $enabled) {
1537	if ($enabled) {
1538	$_saved_loggers[] = $logger_id;
1539	}
1540	}
1541
1542	// fill email with admin.
1543	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1544	$logger_additional_options['updraft_email_logger'] = array(
1545	get_option('admin_email')
1546	);
1547	}
1548
1549	$saved_loggers = $_saved_loggers;
1550	}
1551
1552	foreach ($saved_loggers as $i => $logger_id) {
1553
1554	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1555
1556	$logger_class = $loggers_classes_by_id[$logger_id];
1557
1558	$logger = new $logger_class();
1559
1560	$logger_options = $logger->get_options_list();
1561
1562	if (!empty($logger_options)) {
1563	foreach (array_keys($logger_options) as $option_name) {
1564	if (array_key_exists($option_name, $options_keys)) {
1565	$options_keys[$option_name]++;
1566	} else {
1567	$options_keys[$option_name] = 0;
1568	}
1569
1570	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1571
1572	// if options in old format then get correct value.
1573	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1574	$option_value = array_shift($logger_additional_options[$logger_id]);
1575	}
1576
1577	$logger->set_option($option_name, $option_value);
1578	}
1579	}
1580
1581	// check if logger is active.
1582	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1583
1584	if ($active) {
1585	$logger->enable();
1586	} else {
1587	$logger->disable();
1588	}
1589
1590	$loggers[] = $logger;
1591	}
1592	}
1593
1594	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1595
1596	return $loggers;
1597	}
1598
1599	/**
1600	* Returns associative array with logger class name in a key and path to class file in a value.
1601	*
1602	* @return array
1603	*/
1604	public function get_loggers_classes() {
1605	$loggers_classes = array(
1606	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1607	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1608	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1609	);
1610
1611	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1612
1613	if (!empty($loggers_classes)) {
1614	foreach ($loggers_classes as $logger_class => $logger_file) {
1615	if (!class_exists($logger_class)) {
1616	if (is_file($logger_file)) {
1617	include_once($logger_file);
1618	}
1619	}
1620	}
1621	}
1622
1623	return $loggers_classes;
1624	}
1625
1626	/**
1627	* Returns information about all loggers classes.
1628	*
1629	* @return array
1630	*/
1631	public function get_loggers_classes_info() {
1632	$loggers_classes = $this->get_loggers_classes();
1633
1634	$loggers_classes_info = array();
1635
1636	if (!empty($loggers_classes)) {
1637	foreach (array_keys($loggers_classes) as $logger_class_name) {
1638
1639	if (!class_exists($logger_class_name)) continue;
1640
1641	$logger_id = strtolower($logger_class_name);
1642	$logger_class = new $logger_class_name();
1643
1644	$loggers_classes_info[$logger_id] = array(
1645	'description' => $logger_class->get_description(),
1646	'available' => $logger_class->is_available(),
1647	'allow_multiple' => $logger_class->is_allow_multiple(),
1648	'options' => $logger_class->get_options_list()
1649	);
1650	}
1651	}
1652
1653	return $loggers_classes_info;
1654	}
1655
1656	/**
1657	* Returns true if optimization works in multisite mode
1658	*
1659	* @return boolean
1660	*/
1661	public function is_multisite_mode() {
1662	return (is_multisite() && self::is_premium());
1663	}
1664
1665	/**
1666	* Returns true if current user can run optimizations.
1667	*
1668	* @return bool
1669	*/
1670	public function can_run_optimizations() {
1671	// we don't check permissions for cron jobs.
1672	if (defined('DOING_CRON') && DOING_CRON) return true;
1673
1674	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1675	return true;
1676	}
1677
1678	/**
1679	* Returns true if current user can manage plugin options.
1680	*
1681	* @return bool
1682	*/
1683	public function can_manage_options() {
1684	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1685	return true;
1686	}
1687
1688	/**
1689	* Returns list of all sites in multisite
1690	*
1691	* @return array
1692	*/
1693	public function get_sites() {
1694	$sites = array();
1695	if (function_exists('get_sites')) {
1696	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1697	}
1698	return $sites;
1699	}
1700
1701	/**
1702	* Returns script memory limit in megabytes.
1703	*
1704	* @param bool $memory_limit
1705	* @return int
1706	*/
1707	public function get_memory_limit($memory_limit = false) {
1708	// Returns in megabytes
1709	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1710	$memory_limit = rtrim($memory_limit);
1711
1712	return $this->return_bytes($memory_limit);
1713	}
1714
1715	/**
1716	* Returns free memory in bytes.
1717	*
1718	* @return int
1719	*/
1720	public function get_free_memory() {
1721	return $this->get_memory_limit() - memory_get_usage();
1722	}
1723
1724	/**
1725	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1726	*
1727	* @return int memory limit in bytes.
1728	*/
1729	public function get_script_memory_limit() {
1730	$memory_limit = $this->get_memory_limit();
1731
1732	if (defined('WP_MAX_MEMORY_LIMIT')) {
1733	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1734
1735	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1736	$memory_limit = $wp_memory_limit;
1737	}
1738	}
1739
1740	return $memory_limit;
1741	}
1742
1743	/**
1744	* Returns max packet size for database.
1745	*
1746	* @return int\|string
1747	*/
1748	public function get_max_packet_size() {
1749	global $wpdb;
1750	static $mp = 0;
1751
1752	if ($mp > 0) return $mp;
1753
1754	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1755	// Default to 1MB
1756	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1757	// 32MB
1758	if ($mp < 33554432) {
1759	$save = $wpdb->show_errors(false);
1760	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1761	$wpdb->show_errors($save);
1762
1763	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1764	// Default to 1MB
1765	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1766	}
1767
1768	return $mp;
1769	}
1770
1771	/**
1772	* Converts shorthand memory notation value to bytes.
1773	* From http://php.net/manual/en/function.ini-get.php
1774	*
1775	* @param string $val shorthand memory notation value.
1776	*/
1777	public function return_bytes($val) {
1778	$val = trim($val);
1779	$last = strtolower($val[strlen($val)-1]);
1780	$val = (int) $val;
1781	switch ($last) {
1782	case 'g':
1783	$val *= 1024;
1784	// no break
1785	case 'm':
1786	$val *= 1024;
1787	// no break
1788	case 'k':
1789	$val *= 1024;
1790	}
1791
1792	return $val;
1793	}
1794
1795	/**
1796	* Log fatal errors to defined log destinations.
1797	*/
1798	public function log_fatal_errors() {
1799	$last_error = error_get_last();
1800
1801	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1802	$this->get_logger()->critical($last_error['message']);
1803	}
1804	}
1805
1806	/**
1807	* Close browser connection and continue script work. - Taken from UpdraftPlus
1808	*
1809	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1810	* @return void
1811	*/
1812	public function close_browser_connection($txt = '') {
1813	if (!headers_sent()) {
1814	// Close browser connection so that it can resume AJAX polling
1815	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1816	header('Content-Type: application/json');
1817	header('Connection: close');
1818	header('Content-Encoding: none');
1819	}
1820
1821	if (session_id()) session_write_close();
1822	echo "\r\n\r\n";
1823	echo $txt; // phpcs:ignore WordPress.Security.EscapeOutput -- Output is already escaped
1824	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1825	$ob_level = ob_get_level();
1826	while ($ob_level > 0) {
1827	ob_end_flush();
1828	$ob_level--;
1829	}
1830	flush();
1831	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1832	if (function_exists('litespeed_finish_request')) litespeed_finish_request();
1833	}
1834
1835	/**
1836	* Try to change PHP script time limit.
1837	*/
1838	public function change_time_limit() {
1839	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1840
1841	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1842	}
1843
1844	/**
1845	* Does the request come from UDC
1846	*
1847	* @return boolean
1848	*/
1849	public function is_updraft_central_request() {
1850	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1851	}
1852
1853	/**
1854	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1855	*
1856	* @return boolean
1857	*/
1858	public function template_should_include_data() {
1859	/**
1860	* Filters whether data should be included in certain templates or not.
1861	*/
1862	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1863	}
1864
1865	/**
1866	* Load the templates for the modal window
1867	*/
1868	public function load_modal_template() {
1869	$this->include_template('modal.php');
1870	}
1871
1872	/**
1873	* Adds compress popup template
1874	*/
1875	public function add_smush_popup_template() {
1876	if (current_user_can($this->capability_required())) {
1877	$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
1878	$this->include_template('images/smush-popup.php', false, array('compression_server_hint' => $compression_server_hint));
1879	}
1880	}
1881
1882	/**
1883	* Delete transients and semaphores data from options table.
1884	*/
1885	public function delete_transients_and_semaphores() {
1886	global $wpdb;
1887
1888	$masks = array(
1889	'updraft_locked_wpo_%',
1890	'updraft_unlocked_wpo_%',
1891	'updraft_last_lock_time_wpo_%',
1892	'updraft_semaphore_wpo_%',
1893	'wpo_locked_%',
1894	'wpo_unlocked_%',
1895	'wpo_last_lock_time_%',
1896	'wpo_semaphore_%',
1897	'_transient_timeout_wpo_%',
1898	'_transient_wpo_%',
1899	'updraft_lock_wpo_%',
1900	'wpo_last_scheduled_%',
1901	);
1902
1903	$where_parts = array();
1904	foreach ($masks as $mask) {
1905	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1906	}
1907
1908	$where_clause = implode(' OR ', $where_parts);
1909	$wpdb->query($wpdb->prepare("DELETE FROM {$wpdb->options} WHERE %s", $where_clause));
1910	}
1911
1912	/**
1913	* Prevents bots from indexing plugins list
1914	*/
1915	public function robots_txt($output) {
1916	$upload_dir = wp_upload_dir();
1917	$path = wp_parse_url($upload_dir['baseurl']);
1918	$output .= "\nUser-agent: *";
1919	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo/wpo-plugins-tables-list.json\n";
1920	return $output;
1921	}
1922
1923	/**
1924	* Returns desired enqueue version string
1925	*
1926	* @return string Enqueue version as string
1927	*/
1928	public function get_enqueue_version() {
1929	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1930	}
1931
1932	/**
1933	* Returns script suffix string
1934	*
1935	* @return string empty or `.min` suffix string
1936	*/
1937	public function get_min_or_not_string() {
1938	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1939	}
1940
1941	/**
1942	* Returns script suffix string with WPO_VERSION
1943	*
1944	* @return string empty or min suffix with wpo_version string
1945	*/
1946	public function get_min_or_not_internal_string() {
1947	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1948	}
1949
1950	/**
1951	* Instantiate Ajax handling class
1952	*/
1953	private function load_ajax_handler() {
1954	WPO_Ajax::get_instance();
1955	}
1956
1957	/**
1958	* Get instance of WP_Optimize_Table_Management
1959	*
1960	* @return WP_Optimize_Table_Management
1961	*/
1962	public function get_table_management() {
1963	return WP_Optimize_Table_Management::get_instance();
1964	}
1965
1966	/**
1967	* Get instance of WP_Optimize_404_Detector
1968	*
1969	* @return WP_Optimize_404_Detector
1970	*/
1971	public function get_404_detector() {
1972	return WP_Optimize_404_Detector::get_instance();
1973	}
1974
1975	/**
1976	* Returns the message used to notify the user that the PHP version or WordPress version doesn't meet the requirements.
1977	*
1978	* @return string
1979	*/
1980	public function get_minimum_requirements_notice_message() {
1981	// translators: %1$s is minimum required PHP version, %2$s is minimum required WordPress version
1982	return sprintf(esc_html__('WP-Optimize requires a minimum PHP version of %1$s and WordPress version of %2$s or higher', 'wp-optimize'), esc_html(WPO_REQUIRED_PHP_VERSION), esc_html(WPO_REQUIRED_WP_VERSION));
1983	}
1984
1985	/**
1986	* Output notice when PHP version or WordPress version is not meet for WP-Optimize.
1987	*
1988	* @return void
1989	*/
1990	public function output_minimum_requirements_notice() {
1991	?>
1992	<div class="notice notice-error is-dismissible">
1993	<p><?php echo $this->get_minimum_requirements_notice_message(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Output is already escaped ?></p>
1994	</div>
1995	<?php
1996	}
1997	}
1998
1999	/**
2000	* Unschedule specific tasks:
2001	* `wpo_cron_event2` => DB optimizations
2002	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
2003	*
2004	* @return void
2005	*/
2006	function wpo_cron_deactivate() {
2007	WP_Optimize()->log('running wpo_cron_deactivate()');
2008	wp_clear_scheduled_hook('wpo_cron_event2');
2009	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
2010	}
2011
2012	function WP_Optimize() {
2013	return WP_Optimize::instance();
2014	}
2015
2016	endif;
2017
2018	$GLOBALS['wp_optimize'] = WP_Optimize();
2019