wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 4.6.1, 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: 4.6.1
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/wp-optimize?utm_source=wpo-wp-dir&utm_medium=referral&utm_campaign=plugin-dir&utm_content=teamupdraft&utm_creative_format=author
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', '4.6.1');
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	require_once(WPO_PLUGIN_MAIN_PATH.'includes/fragments/input-processing.php');
30
31	class WP_Optimize {
32
33	public $premium_version_link = 'https://teamupdraft.com/wp-optimize/pricing/?utm_source=wpo-plugin&utm_medium=referral&utm_campaign=paac&utm_creative_format=overlay';
34
35	private $template_directories;
36
37	protected static $_instance = null;
38
39	protected $_cache_init_status = null;
40
41	/**
42	* An array of schedule types
43	*
44	* @param boolean $placeholder Determines whether a placeholder select option should be included or not
45	*
46	* @return array An array of schedule types
47	*/
48	public static function get_schedule_types($placeholder = false) {
49	$schedule_types = array(
50	'wpo_daily' => __('Daily', 'wp-optimize'),
51	'wpo_weekly' => __('Weekly', 'wp-optimize'),
52	'wpo_fortnightly' => __('Fortnightly', 'wp-optimize'),
53	'wpo_monthly' => __('Monthly', 'wp-optimize'),
54	);
55
56	$schedule_types = apply_filters('wp_optimize_schedule_types', $schedule_types);
57	if (true === $placeholder) {
58	$schedule_types = array_merge(array('' => __('Select schedule', 'wp-optimize')), $schedule_types);
59	}
60	return $schedule_types;
61	}
62
63	/**
64	* Class constructor
65	*/
66	public function __construct() {
67
68	spl_autoload_register(array($this, 'loader'));
69
70	// Don't process when accessing without normal WordPress core loading.
71	if (!defined('WPINC')) return;
72
73	$bypass_instance = $this->get_bypass_instance();
74	if ($bypass_instance->should_bypass()) {
75	// Show a bypass notice in the admin bar
76	$bypass_instance->show_admin_notice();
77	if (!headers_sent()) {
78	header('WPO-Bypass-Mode: active');
79	}
80	return;
81	}
82
83	// Checks if premium is installed along with plugins needed.
84	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
85
86	register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
87	register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
88	register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
89
90	WPO_Page_Optimizer::instance()->maybe_initialise();
91
92	$this->load_admin();
93	add_action('admin_init', array($this, 'admin_init'));
94
95	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
96	add_action('wpo_cron_event2', array($this, 'cron_action'));
97	add_filter('cron_schedules', array($this, 'cron_schedules'));
98
99	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
100
101	add_action('admin_footer-upload.php', array($this, 'add_smush_popup_template'));
102
103	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
104
105	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
106
107	if ($this->get_options()->get_option('404_detector', 0)) {
108	WP_Optimize_Performance::get_instance($this->get_404_detector())->hook_404_handler();
109	}
110
111	$this->load_ajax_handler();
112
113	// Show update to Premium notice for non-premium multisite.
114	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
115
116	// Action column (show repair button, if needed).
117	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
118
119	/**
120	* Add action for display Images > Compress images tab.
121	*/
122	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
123
124	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral/updraftcentral.php');
125
126	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
127
128	register_shutdown_function(array($this, 'log_fatal_errors'));
129
130	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
131
132	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
133
134	$import_done_hooks = array(
135	'import_end', // WordPress importer
136	'pmxi_after_xml_import', // wp all import
137	);
138
139	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
140
141	foreach ($db_update_hooks as $hook) {
142	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
143	}
144	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
145
146	add_action('wpo_reset_stats_counter', array($this, 'reset_stats_counters'));
147
148	$this->schedule_reset_stats_counters_event();
149
150	}
151
152	/**
153	* Reset stats counter at the start of each month
154	*/
155	public function reset_stats_counters() {
156	// Save current total cleaned as previous month data
157	$options = $this->get_options();
158	$last_month_total_cleaned = $options->get_option('total-cleaned-current-month');
159	$options->update_option('total-cleaned-previous-month', $last_month_total_cleaned);
160	$options->update_option('total-cleaned-current-month', '0');
161	$this->schedule_reset_stats_counters_event();
162	}
163
164	/**
165	* Schedule the reset of stat's counter at the start of each month
166	*/
167	private function schedule_reset_stats_counters_event() {
168	if (!wp_next_scheduled('wpo_reset_stats_counter')) {
169	$next_reset = strtotime('first day of next month midnight');
170	wp_schedule_single_event($next_reset, 'wpo_reset_stats_counter');
171	}
172	}
173
174	/**
175	* Returns Onboarding class instance
176	*
177	* @return WPO_Onboarding
178	*/
179	public function get_onboarding() {
180	return WPO_Onboarding::instance();
181	}
182
183	/**
184	* Check if minimum requirements for WP-Optimize is met or not.
185	*
186	* @return bool
187	*/
188	public function is_minimum_requirement_met() {
189	global $wp_version;
190	return (version_compare(WPO_REQUIRED_PHP_VERSION, PHP_VERSION, '<=') && version_compare(WPO_REQUIRED_WP_VERSION, $wp_version, '<='));
191	}
192
193	/**
194	* Add admin notice about minimum server requirements.
195	*/
196	public function add_notice_minimum_requirements_not_met() {
197	add_action('admin_notices', array($this, 'output_minimum_requirements_notice'));
198	}
199
200	/**
201	* Deactivate the plugin programmatically
202	*/
203	public function deactivate_plugin() {
204	if (!function_exists('deactivate_plugins')) {
205	require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
206	}
207	deactivate_plugins(plugin_basename(__FILE__));
208	}
209
210	/**
211	* Die after stating minimum requirements
212	*/
213	public function die_minimum_requirement_not_met() {
214	$message = $this->get_minimum_requirements_notice_message();
215	$message .= ' <a href="'.esc_url(admin_url('plugins.php')).'">'.esc_html__('Back to Plugins.', 'wp-optimize').'</a>';
216	wp_die(wp_kses_post($message));
217	}
218
219	/**
220	* Autoloads classes.
221	*
222	* @param string $class_name The name of the class.
223	*/
224	public function loader($class_name) {
225	$dirs = $this->get_class_directories();
226
227	foreach ($dirs as $dir) {
228	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
229	if (file_exists($class_file)) {
230	require_once($class_file);
231	return;
232	}
233
234	$interface_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'interface-' . str_replace('_', '-', strtolower($class_name)) . '.php';
235	if (file_exists($interface_file)) {
236	require_once($interface_file);
237	return;
238	}
239	}
240
241	// Include PHP Minify - https://github.com/matthiasmullie/minify
242	if (strpos($class_name, 'MatthiasMullie') !== false) {
243	$class_name_parts = explode('\\', $class_name);
244	$class_file = WPO_PLUGIN_MAIN_PATH.'vendor/'.strtolower($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';
245	if (file_exists($class_file)) {
246	require_once($class_file);
247	return;
248	}
249	}
250
251	if ('Minify_HTML' === $class_name) {
252	require_once WPO_PLUGIN_MAIN_PATH.'vendor/mrclay/minify/lib/Minify/HTML.php';
253	}
254	}
255
256	/**
257	* Returns an array of class directories
258	*
259	* @return array
260	*/
261	private function get_class_directories() {
262	return array(
263	'cache',
264	'compatibility',
265	'includes',
266	'includes/tables',
267	'includes/list-tables',
268	'includes/gravatars',
269	'includes/lcp',
270	'minify',
271	'optimizations',
272	'webp',
273	'includes/updraftcentral',
274	);
275	}
276
277	/**
278	* Initialize Admin class to load admin UI
279	*/
280	private function load_admin() {
281	$this->get_admin_instance();
282	}
283
284	/**
285	* Returns Bypass class instance
286	*
287	* @return WP_Optimize_Bypass
288	*/
289	private function get_bypass_instance() {
290	return WP_Optimize_Bypass::instance();
291	}
292
293	/**
294	* Returns Admin class instance
295	*
296	* @return WP_Optimize_Admin
297	*/
298	public function get_admin_instance() {
299	return WP_Optimize_Admin::instance();
300	}
301
302	/**
303	* Detect when an active plugin or theme is updated, and trigger an action
304	*
305	* @param object $upgrader_object
306	* @param array $options
307	* @return void
308	*/
309	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
310	if (empty($options) \|\| !isset($options['type'])) return;
311
312	$should_purge_cache = false;
313	$skin = $upgrader_object->skin;
314	if ('plugin' === $options['type']) {
315	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
316	$plugins = array();
317	if (!empty($options['plugin'])) {
318	$plugins = array($options['plugin']);
319	} elseif (!empty($options['plugins']) && is_array($options['plugins'])) {
320	$plugins = $options['plugins'];
321	}
322
323	foreach ($plugins as $plugin) {
324	if (!empty($plugin) && ! is_wp_error($upgrader_object->result)) {
325	if (is_plugin_active($plugin)) {
326	$should_purge_cache = true;
327	break;
328	}
329	}
330	}
331	} elseif ('theme' === $options['type']) {
332	$active_theme = get_stylesheet();
333	$parent_theme = get_template();
334	// A theme is updated using the upload system
335	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
336	$updated_theme = $upgrader_object->result['destination_name'];
337	// Check if the theme is in use
338	if ($active_theme === $updated_theme \|\| $parent_theme === $updated_theme) {
339	$should_purge_cache = true;
340	}
341	// A theme is updated using the classic update system
342	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
343	// Check if the theme is in use
344	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
345	$should_purge_cache = true;
346	}
347	}
348	}
349
350	/**
351	* Action executed when an active theme or plugin was updated
352	*/
353	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
354
355	}
356
357	/**
358	* Sets a flag to indicate an import action is done, if needed
359	*/
360	public function maybe_schedule_update_record_count_event() {
361	if (!wp_next_scheduled('wpo_update_record_count_event')) {
362	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
363	}
364	}
365
366	public function admin_page_wpo_images_smush() {
367	$options = Updraft_Smush_Manager()->get_smush_options();
368	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
369	$sites = $this->get_sites();
370	$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
371	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allow_local_webp_conversion' => $this->get_server_compatibility_instance()->does_server_allow_local_webp_conversion(), 'compression_server_hint' => $compression_server_hint));
372	$this->add_smush_popup_template();
373	}
374
375	public static function instance() {
376	if (empty(self::$_instance)) {
377	self::$_instance = new self();
378	}
379	return self::$_instance;
380	}
381
382	public function get_optimizer() {
383	return WP_Optimizer::instance();
384	}
385
386	/**
387	* Adds 3rd party plugin compatibilities.
388	*/
389	public function load_compatibilities() {
390
391	if (class_exists('Polylang')) {
392	WPO_Polylang_Compatibility::instance();
393	}
394
395	WPO_Page_Builder_Compatibility::instance();
396	WPO_KD_Submissions_Compatibility::instance();
397
398	if (class_exists('Custom_Permalinks')) {
399	WPO_Custom_Permalink_Compatibility::instance();
400	}
401
402	if (class_exists('TRP_Translate_Press')) {
403	WPO_TranslatePress_Compatibility::instance();
404	}
405
406	do_action('wpo_load_compatibilities');
407	}
408
409	/**
410	* Get and instantiate WP_Optimize_Minify
411	*
412	* @return WP_Optimize_Minify
413	*/
414	public function get_minify() {
415	return WP_Optimize_Minify::instance();
416	}
417
418	public function get_options() {
419	return WP_Optimize_Options::instance();
420	}
421
422	public function get_notices() {
423	return WP_Optimize_Notices::instance();
424	}
425
426	/**
427	* Get and instantiate WP_Optimize_Delay_JS
428	*
429	* @return WP_Optimize_Delay_JS
430	*/
431	private function get_delay_js() {
432	return WP_Optimize_Delay_JS::instance();
433	}
434
435	/**
436	* Returns instance of WPO_Page_Optimizer class.
437	*
438	* @return WPO_Page_Optimizer
439	*/
440	public function get_page_optimizer() {
441	return WPO_Page_Optimizer::instance();
442	}
443
444	/**
445	* Returns instance 404 Detector Cron class.
446	*
447	* @return WP_Optimize_404_Detector_Cron
448	*/
449	private function get_404_detector_cron() {
450	return WP_Optimize_404_Detector_Cron::get_instance();
451	}
452
453	/**
454	* Returns instance of WPO_Page_Cache class.
455	*
456	* @return WPO_Page_Cache
457	*/
458	public function get_page_cache() {
459	return WPO_Page_Cache::instance();
460	}
461
462	/**
463	* Returns instance of WP_Optimize_WebP class.
464	*
465	* @return WP_Optimize_WebP
466	*/
467	public function get_webp_instance() {
468	return WP_Optimize_WebP::get_instance();
469	}
470
471	/**
472	* Returns instance of WP_Optimize_Server_Compatibility class.
473	*
474	* @return WP_Optimize_Server_Compatibility
475	*/
476	public function get_server_compatibility_instance(): WP_Optimize_Server_Compatibility {
477	return WP_Optimize_Server_Compatibility::get_instance();
478	}
479
480	/**
481	* Create instance of WP_Optimize_Browser_Cache.
482	*
483	* @return WP_Optimize_Browser_Cache
484	*/
485	public function get_browser_cache() {
486	return WP_Optimize_Browser_Cache::instance();
487	}
488
489	/**
490	* Returns WP_Optimize_Database_Information instance.
491	*
492	* @return WP_Optimize_Database_Information
493	*/
494	public function get_db_info() {
495	return WP_Optimize_Database_Information::instance();
496	}
497
498	/**
499	* Returns instance of WP_Optimize_Gzip_Compression.
500	*
501	* @return WP_Optimize_Gzip_Compression
502	*/
503	public function get_gzip_compression() {
504	return WP_Optimize_Gzip_Compression::instance();
505	}
506
507	/**
508	* Create instance of WP_Optimize_Htaccess.
509	*
510	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
511	* @return WP_Optimize_Htaccess
512	*/
513	public static function get_htaccess($htaccess_file = '') {
514	return new WP_Optimize_Htaccess($htaccess_file);
515	}
516
517	/**
518	* Return instance of Updraft_Logger
519	*
520	* @return Updraft_Logger
521	*/
522	public function get_logger() {
523	return Updraft_Logger::instance();
524	}
525
526	/**
527	* Check if the current page belongs to WP-Optimize.
528	*
529	* @return bool
530	*/
531	public function is_wpo_page() {
532	$current_screen = get_current_screen();
533
534	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
535	}
536
537	/**
538	* Enqueue scripts and styles on WP-Optimize pages.
539	*/
540	public function admin_enqueue_scripts() {
541	global $wp_version;
542	$enqueue_version = $this->get_enqueue_version();
543	$min_or_not = $this->get_min_or_not_string();
544	$min_or_not_internal = $this->get_min_or_not_internal_string();
545
546	// Register or enqueue common scripts
547	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
548	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
549	wp_register_script('wp-optimize-block-ui', WPO_PLUGIN_URL.'js/blockUI'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version);
550	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
551
552	// load scripts and styles only on WP-Optimize pages.
553	if (!$this->is_wpo_page()) return;
554
555	wp_enqueue_script( 'jquery-ui-tooltip' );
556	// Defeat other plugins/themes which dump their jQuery UI CSS onto our settings page
557	wp_deregister_style('jquery-ui');
558	wp_enqueue_style('jquery-ui', WPO_PLUGIN_URL.'css/jquery-ui.custom' . $min_or_not_internal . '.css', array(), $enqueue_version);
559
560
561	wp_enqueue_script('select2', WPO_PLUGIN_URL . 'js/select2/select2' . $min_or_not . '.js', array('jquery'), $enqueue_version);
562	wp_enqueue_style('select2', WPO_PLUGIN_URL . 'css/select2/select2' . $min_or_not . '.css', array(), $enqueue_version);
563
564	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
565
566	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
567
568	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
569	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js', 'wp-optimize-block-ui'), $enqueue_version);
570	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$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'), $enqueue_version);
571	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
572	// Using table sorter to help with organising the DB size on Table Information
573	// https://github.com/tofsjonas/sortable/
574	wp_enqueue_script('sortable-js', WPO_PLUGIN_URL.'js/sortable/sortable'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
575	wp_enqueue_script('sortable-a11y-js', WPO_PLUGIN_URL.'js/sortable/sortable.a11y'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
576
577	wp_enqueue_style('sortable-css', WPO_PLUGIN_URL.'css/sortable/sortable'.$min_or_not_internal.'.css', array(), $enqueue_version);
578
579	$js_variables = $this->wpo_js_translations();
580	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
581	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
582
583	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
584
585	$status_report_dependencies = array('wp-optimize-admin-js');
586
587	// Only include wp-api-fetch if WP >= 5.0
588	if (version_compare($wp_version, '5.0', '>=')) {
589	$status_report_dependencies[] = 'wp-api-fetch';
590	}
591
592	wp_enqueue_script('wp-optimize-status-report', WPO_PLUGIN_URL.'js/status'.$min_or_not_internal.'.js', $status_report_dependencies, $enqueue_version);
593
594	wp_enqueue_script('js-zip', WPO_PLUGIN_URL.'/js/jszip/jszip' . $min_or_not . '.js', array(), $enqueue_version);
595
596	}
597
598	/**
599	* Enqueue any required front-end scripts
600	*
601	* @return void
602	*/
603	public function frontend_enqueue_scripts() {
604	if (!$this->current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
605	$enqueue_version = $this->get_enqueue_version();
606	$min_or_not_internal = $this->get_min_or_not_internal_string();
607
608	// Register or enqueue common scripts
609	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
610	}
611
612	/**
613	* Load Task Manager
614	*
615	* @return Updraft_Smush_Manager
616	*/
617	public function get_task_manager() {
618	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
619
620	Updraft_Tasks_Activation::check_updates();
621
622	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
623	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
624	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
625
626	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
627	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
628
629	return Updraft_Smush_Manager();
630	}
631
632	/**
633	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
634	*
635	* @returns bool
636	*/
637	public static function is_premium() {
638	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
639	$wp_optimize_premium = WP_Optimize_Premium();
640	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
641	}
642	return false;
643	}
644
645	/**
646	* 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.
647	*
648	* @return bool
649	*/
650	public function is_apache_server() {
651	global $is_apache;
652	return (bool) $is_apache;
653	}
654
655	/**
656	* Check if script running on IIS web server.
657	*
658	* @return bool
659	*/
660	public function is_IIS_server() {
661	global $is_IIS, $is_iis7;
662	return $is_IIS \|\| $is_iis7;
663	}
664
665	/**
666	* Check if Apache module or modules active.
667	*
668	* @param string\|array $module - single Apache module name or list of Apache module names.
669	*
670	* @return bool\|null - if null, the result was indeterminate
671	*/
672	public function is_apache_module_loaded($module) {
673	if (!$this->is_apache_server()) return false;
674
675	if (!function_exists('apache_get_modules')) return null;
676
677	$module_loaded = true;
678
679	if (is_array($module)) {
680	foreach ($module as $single_module) {
681	if (!in_array($single_module, apache_get_modules())) {
682	$module_loaded = false;
683	break;
684	}
685	}
686	} else {
687	$module_loaded = in_array($module, apache_get_modules());
688	}
689
690	return $module_loaded;
691	}
692
693	/**
694	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
695	*/
696	public function plugins_loaded() {
697
698	if (!$this->is_minimum_requirement_met()) {
699	$this->add_notice_minimum_requirements_not_met();
700	$this->deactivate_plugin();
701	WPO_Deactivation::actions();
702	return;
703	}
704
705	if (is_admin() && $this->current_user_can()) {
706	WP_Optimize_Heartbeat::get_instance();
707	}
708
709	if ($this->get_server_compatibility_instance()->does_server_handle_cache()) {
710	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
711
712	// If newly migrated to a server that handles cache, disable wpo cache
713	$cache = $this->get_page_cache();
714	if ($cache->is_enabled()) {
715	$cache->disable();
716	}
717	}
718
719	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
720
721	// Run Premium loader if it exists
722	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
723	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
724	}
725
726	if (!self::is_premium()) {
727	$this->get_server_compatibility_instance()->maybe_disable_unsupported_table_optimization();
728	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
729	}
730
731	// load defaults
732	$this->get_options()->set_default_options();
733
734	// Initialize loggers.
735	add_action('init', array($this, 'setup_loggers'));
736
737	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
738	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
739	deactivate_plugins($free_plugin);
740
741	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise, it contains the path to free.
742	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
743	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
744
745	if (!is_file($advanced_cache_filename) && wp_is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && wp_is_writable($advanced_cache_filename))) {
746	file_put_contents($advanced_cache_filename, '');
747	}
748	}
749
750	// Registers the notice letting the user know it cannot be active if premium is active.
751	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
752	return;
753	}
754
755	add_action('init', array($this, 'init'));
756
757	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
758	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
759	}
760
761	/**
762	* Methods needed to be run in init hook.
763	*
764	* @return void
765	*/
766	public function init() {
767	$this->load_language_file();
768	$this->schedule_plugin_cron_tasks();
769	$this->init_page_cache();
770	$this->get_minify();
771	$this->get_delay_js();
772
773	// Load 3rd party plugin compatibilities.
774	$this->load_compatibilities();
775
776	$this->run_updates();
777
778	// We need this here because webp can be unavailable because of server moves
779	// This deletes already converted webp images and original image file when a media is deleted
780	WP_Optimize_WebP_Images::get_instance();
781
782	// Loads the task manager
783	$this->get_task_manager();
784
785	// Include WebP
786	if (WPO_USE_WEBP_CONVERSION) {
787	$this->get_webp_instance();
788	}
789
790	$this->get_onboarding()->init();
791	}
792
793	/**
794	* Loads the language file.
795	*
796	* @return void
797	*/
798	private function load_language_file() {
799	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
800	}
801
802	/**
803	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
804	* (e.g. "central" folder)
805	*
806	* @param array $hosts List of plugins having the "central" library integrated into them
807	*
808	* @return array
809	*/
810	public function attach_updraftcentral_host($hosts) {
811	$hosts[] = 'wp-optimize';
812	return $hosts;
813	}
814
815	/**
816	* Filter cache tabs (when the server handles it or do not allow it, like Kinsta)
817	*
818	* @param array $tabs An array of tabs
819	*
820	* @return array $tabs An array of tabs
821	*/
822	public function filter_cache_tabs($tabs) {
823	unset($tabs['preload']);
824	unset($tabs['advanced']);
825	unset($tabs['gzip']);
826	unset($tabs['settings']);
827	return $tabs;
828	}
829
830	/**
831	* Check whether one of free/Premium is active (whether it is this instance or not)
832	*
833	* @param string $which - 'free' or 'premium'
834	*
835	* @return string\|boolean - plugin path (if installed) or false if not
836	*/
837	public function is_active($which = 'free') {
838	$active_plugins = $this->get_active_plugins();
839	foreach ($active_plugins as $file) {
840	if ('wp-optimize.php' == basename($file)) {
841	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
842	if (('free' === $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' !== $which && file_exists($plugin_dir.'/premium.php'))) return $file;
843	}
844	}
845	return false;
846	}
847
848	/**
849	* Gets an array of plugins active on either the current site, or site-wide
850	*
851	* @return array - a list of plugin paths (relative to the plugin directory)
852	*/
853	private function get_active_plugins() {
854	// Gets all active plugins on the current site
855	$active_plugins = (array) get_option('active_plugins', array());
856
857	if (is_multisite()) {
858	$network_active_plugins = get_site_option('active_sitewide_plugins');
859	if (!empty($network_active_plugins)) {
860	$network_active_plugins = array_keys($network_active_plugins);
861	$active_plugins = array_merge($active_plugins, $network_active_plugins);
862	}
863	}
864
865	return $active_plugins;
866	}
867
868	/**
869	* This function checks whether a specific plugin is installed, and returns information about it
870	*
871	* @param string $name Specify "Plugin Name" to return details about it.
872	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
873	*/
874	public function is_installed($name) {
875
876	// Needed to have the 'get_plugins()' function
877	include_once(ABSPATH.'wp-admin/includes/plugin.php');
878
879	// Gets all plugins available
880	$get_plugins = get_plugins();
881
882	$active_plugins = $this->get_active_plugins();
883
884	$plugin_info = array();
885	$plugin_info['installed'] = false;
886	$plugin_info['active'] = false;
887
888	// Loops around each plugin available.
889	foreach ($get_plugins as $key => $value) {
890	// If the plugin name matches that of the specified name, it will gather details.
891	if ($value['Name'] !== $name && $value['TextDomain'] !== $name) continue;
892	$plugin_info['installed'] = true;
893	$plugin_info['name'] = $key;
894	$plugin_info['version'] = $value['Version'];
895	if (in_array($key, $active_plugins)) {
896	$plugin_info['active'] = true;
897	}
898	break;
899	}
900	return $plugin_info;
901	}
902
903	/**
904	* This is a notice to show users that premium is installed
905	*/
906	public function show_admin_notice_premium() {
907	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.esc_html__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
908	if (isset($_GET['activate'])) unset($_GET['activate']); // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- only unsetting value, not using it.
909	}
910
911	/**
912	* Show update to Premium notice for non-premium multisite.
913	*/
914	public function show_multisite_update_to_premium_notice() {
915	if (!is_multisite() \|\| self::is_premium()) return;
916
917	echo '<p><a href="'.esc_url($this->premium_version_link). '&utm_content=multisite-upsell' .'">'.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>';
918	}
919
920	public function admin_init() {
921	$pagenow = $GLOBALS['pagenow'];
922
923	$this->register_template_directories();
924
925	if (('index.php' === $pagenow && $this->current_user_can('update_plugins')) \|\| ('index.php' === $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
926	$options = $this->get_options();
927
928	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
929
930	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
931	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
932	$installed_for = (time() - $installed);
933	}
934
935	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
936	add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
937	}
938	}
939
940	if ($this->is_wp_smush_installed()) {
941	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
942	}
943	if ($this->get_options()->get_option('404_detector', 0)) {
944	WP_Optimize_Performance::get_instance($this->get_404_detector())->init();
945	}
946	}
947
948	/**
949	* Checks whether the WP Smush plugin is active or not
950	*
951	* @return bool
952	*/
953	private function is_wp_smush_installed() {
954	return is_plugin_active('wp-smushit/wp-smush.php');
955	}
956
957	/**
958	* Remove WPO plugin name from WP Smushit transient value
959	*
960	* @return array $active_plugins
961	*/
962	public function modify_wp_smush_conflict_check($active_plugins) {
963	// This can be boolean value since it is return value of get_transient
964	if (!is_array($active_plugins)) return $active_plugins;
965
966	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
967	unset($active_plugins[$key]);
968	}
969	return $active_plugins;
970	}
971
972	/**
973	* Get the installation or update notice instance
974	*
975	* @return WP_Optimize_Install_Or_Update_Notice
976	*/
977	public function get_install_or_update_notice() {
978	static $instance = null;
979	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
980	$instance = new WP_Optimize_Install_Or_Update_Notice();
981	return $instance;
982	}
983
984	/**
985	* Display an admin notice for an upgraded version.
986	*/
987	public function show_admin_notice_upgraded() {
988	$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
989	'is_premium' => WP_Optimize::is_premium()
990	));
991	}
992
993	/**
994	* Returns required capability string
995	*
996	* @return string
997	*/
998	public function capability_required() {
999	$capability = is_multisite() ? 'manage_network_options' : 'manage_options';
1000
1001	$filtered_capability = apply_filters('wp_optimize_capability_required', $capability);
1002
1003	return is_string($filtered_capability) ? $filtered_capability : $capability;
1004	}
1005
1006	/**
1007	* Check if the current user has a given capability.
1008	* If no capability is provided, it checks for the default capability required to access WP-Optimize.
1009	*
1010	* @param string\|null $capability The capability to check. Null = use default.
1011	* @return bool
1012	*/
1013	public function current_user_can($capability = null) {
1014	if (null === $capability) {
1015	$capability = $this->capability_required(); // falls back to default
1016	}
1017
1018	if (current_user_can($capability)) {
1019	return true;
1020	}
1021
1022	return false;
1023	}
1024
1025	/**
1026	* Returns array of translations used in javascript code.
1027	*
1028	* @return array
1029	*/
1030	public function wpo_js_translations() {
1031	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
1032	$translations = array(
1033	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
1034	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
1035	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
1036	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
1037	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
1038	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
1039	'table_optimization_timeout' => 120000,
1040	'add' => __('Add', 'wp-optimize'),
1041	'cancel' => __('Cancel', 'wp-optimize'),
1042	'cancelling' => __('Cancelling...', 'wp-optimize'),
1043	'enable' => __('Enable', 'wp-optimize'),
1044	'disable' => __('Disable', 'wp-optimize'),
1045	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
1046	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
1047	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
1048	// translators: %s is the table name
1049	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
1050	// translators: %s is the table name
1051	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
1052	// translators: %s is the table name
1053	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
1054	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
1055	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
1056	'update' => __('Update', 'wp-optimize'),
1057	'run_now' => __('Run now', 'wp-optimize'),
1058	'starting_preload' => __('Started preload...', 'wp-optimize'),
1059	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
1060	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
1061	'number_of_files' => __('Number of files:', 'wp-optimize'),
1062	'toggle_info' => __('Show information', 'wp-optimize'),
1063	'delete_file' => __('Delete', 'wp-optimize'),
1064	'deleting' => __('Deleting...', 'wp-optimize'),
1065	'added_to_list' => __('Added to the list', 'wp-optimize'),
1066	'added_notice' => __('The file was added to the list', 'wp-optimize'),
1067	'save_notice' => __('Save the changes', 'wp-optimize'),
1068	'saving' => __('Saving...', 'wp-optimize'),
1069	'clearing_cache' => __('Clearing cache...', 'wp-optimize'),
1070	'creating_cache' => __('Creating cache...', 'wp-optimize'),
1071	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
1072	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
1073	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
1074	'loading_data' => __('Loading data...', 'wp-optimize'),
1075	'spinner_src' => esc_url(admin_url('images/spinner-2x.gif')),
1076	'logo_src' => esc_url(WPO_PLUGIN_URL.'images/notices/wp_optimize_logo.png'),
1077	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
1078	'sites' => $this->get_sites(),
1079	'user_always_ignores_table_deletion_warning' => (bool) get_user_meta(get_current_user_id(), 'wpo-ignores-table-deletion-warning', true),
1080	'user_always_ignores_post_meta_deletion_warning' => (bool) get_user_meta(get_current_user_id(), 'wpo-ignores-post-meta-deletion-warning', true),
1081	'user_always_ignores_orphaned_relationship_data_deletion_warning' => (bool) get_user_meta(get_current_user_id(), 'wpo-ignores-orphaned-relationship-data-deletion-warning', true),
1082	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
1083	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
1084	'network_site_url' => network_site_url(),
1085	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
1086	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
1087	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
1088	'importing' => __('Importing...', 'wp-optimize'),
1089	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
1090	'exported_on' => __('Which was exported on:', 'wp-optimize'),
1091	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
1092	'select_destination' => __('Select destination', 'wp-optimize'),
1093	'show' => __('Show', 'wp-optimize'),
1094	'hide' => __('Hide', 'wp-optimize'),
1095	'please_wait' => __('Please wait a moment...', 'wp-optimize'),
1096	'clipboard_failed' => __('Copy to clipboard failed, please do it manually', 'wp-optimize'),
1097	'clipboard_success' => __('System status has been copied to the clipboard', 'wp-optimize'),
1098	'show_information' => __('Show information', 'wp-optimize'),
1099	'hide_information' => __('Hide information', 'wp-optimize'),
1100	'data_not_available' => __('Not available', 'wp-optimize'),
1101	'something_wrong_try_again' => __('Something went wrong; please try again.', 'wp-optimize')
1102	);
1103	$filtered_translations = apply_filters('wpo_js_translations', $translations);
1104	return is_array($filtered_translations) ? $filtered_translations : $translations;
1105	}
1106
1107	/**
1108	* Add settings link on plugin page
1109	*
1110	* @param array $links Passing through the URL to be used within the HREF.
1111	* @return array Returns the Links.
1112	*/
1113	public function plugin_settings_link($links) {
1114
1115	$admin_page_url = $this->get_options()->admin_page_url();
1116	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
1117
1118	if (!self::is_premium()) {
1119	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '&utm_content=plugin-page' . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
1120	array_unshift($links, $premium_link);
1121	}
1122
1123	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
1124	array_unshift($links, $settings_link);
1125
1126	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
1127	array_unshift($links, $optimize_link);
1128	return $links;
1129	}
1130
1131	/**
1132	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
1133	*
1134	* @param string $content String for output to column
1135	* @param object $table_info Object with table info.
1136	*
1137	* @return string
1138	*/
1139	public function tables_list_additional_column_data($content, $table_info) {
1140	if ($table_info->is_needing_repair) {
1141	$content .= '<div class="wpo_button_wrap">'
1142	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
1143	. '<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
1144	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1145	. '</div>';
1146	}
1147
1148	// table belongs to plugin.
1149	if ($table_info->can_be_removed) {
1150	$content .= '<div>'
1151	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
1152	. '<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
1153	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1154	. '</div>';
1155	}
1156
1157	// Add option for MyISAM to InnoDB conversion.
1158	if ('MyISAM' === $table_info->Engine) {
1159	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
1160	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
1161	. '<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
1162	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1163	. '</div>';
1164
1165	}
1166
1167	return $content;
1168	}
1169
1170	/**
1171	* Initialize WP-Optimize page cache.
1172	*/
1173	private function init_page_cache() {
1174	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
1175	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
1176	$this->_cache_init_status = $this->get_page_cache()->enable();
1177	}
1178	}
1179	}
1180
1181	/**
1182	* Get init_page_cache() status.
1183	*
1184	* @return bool\|WP_Error
1185	*/
1186	public function get_init_page_cache_status() {
1187	return $this->_cache_init_status;
1188	}
1189
1190	/**
1191	* Schedules cron event based on selected schedule type
1192	*
1193	* @return void
1194	*/
1195	public function cron_activate() {
1196	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
1197
1198	$options = $this->get_options();
1199
1200	if (false === $options->get_option('schedule')) {
1201	$options->set_default_options();
1202	} else {
1203	if ('true' === $options->get_option('schedule')) {
1204	if (!wp_next_scheduled('wpo_cron_event2')) {
1205	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
1206
1207	// Backward compatibility
1208	if ('wpo_otherweekly' === $schedule_type) $schedule_type = 'wpo_fortnightly';
1209
1210	$this_time = (86400 * 7);
1211
1212	switch ($schedule_type) {
1213	case "wpo_daily":
1214	$this_time = 86400;
1215	break;
1216
1217	case "wpo_weekly":
1218	$this_time = (86400 * 7);
1219	break;
1220
1221	case "wpo_fortnightly":
1222	$this_time = (86400 * 14);
1223	break;
1224
1225	case "wpo_monthly":
1226	$this_time = (86400 * 30);
1227	break;
1228	}
1229
1230	add_action('wpo_cron_event2', array($this, 'cron_action'));
1231	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1232	$this->log('running wp_schedule_event()');
1233	if (is_wp_error($result)) {
1234	$error_msg = $result->get_error_message();
1235	$this->log($error_msg);
1236	$this->log(print_r($result, true)); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r -- Using for debugging purpose, logged into separate file
1237	} else {
1238	$this->log($result);
1239	}
1240	}
1241	}
1242	}
1243	}
1244
1245	/**
1246	* Unschedules WP-Optimize cron events on deactivation.
1247	*
1248	* @return void
1249	*/
1250	public function wpo_cron_deactivate() {
1251	if (is_multisite()) {
1252	$sites = $this->get_sites();
1253	foreach ($sites as $site) {
1254	switch_to_blog($site->blog_id);
1255	$this->unschedule_wpo_cron_jobs();
1256	restore_current_blog();
1257	}
1258	} else {
1259	$this->unschedule_wpo_cron_jobs();
1260	}
1261	}
1262
1263	/**
1264	* Unschedules all WP-Optimize cron jobs on the current site.
1265	*
1266	* @return void
1267	*/
1268	private function unschedule_wpo_cron_jobs() {
1269	$cron_jobs = _get_cron_array();
1270	foreach ($cron_jobs as $job) {
1271	foreach (array_keys($job) as $hook) {
1272	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1273	}
1274	}
1275	}
1276
1277	/**
1278	* Scheduler public functions to update schedulers
1279	*
1280	* @param array $schedules An array of schedules being passed.
1281	* @return array An array of schedules being returned.
1282	*/
1283	public function cron_schedules($schedules) {
1284	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1285	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1286	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1287	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1288	return $schedules;
1289	}
1290
1291	/**
1292	* Returns count of overdue cron jobs.
1293	*
1294	* @return integer
1295	*/
1296	public function howmany_overdue_crons() {
1297	$how_many_overdue = 0;
1298	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1299	$crons = _get_cron_array();
1300	if (is_array($crons)) {
1301	$timenow = time();
1302	foreach ($crons as $jt => $job) {
1303	if ($jt < $timenow) {
1304	$how_many_overdue++;
1305	}
1306	}
1307	}
1308	}
1309	return $how_many_overdue;
1310	}
1311
1312	/**
1313	* Run updates on plugin activation.
1314	*/
1315	public function run_updates() {
1316	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1317	WP_Optimize_Updates::check_updates();
1318	}
1319
1320	/**
1321	* Returns warning about overdue crons.
1322	*
1323	* @param int $howmany count of overdue crons
1324	* @return string
1325	*/
1326	public function show_admin_warning_overdue_crons($howmany) {
1327	$ret = '<div class="updated below-h2"><p>';
1328	// translators: %d is number of overdue cron jobs
1329	$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://teamupdraft.com/blog/the-scheduler-in-wordpress-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>';
1330	$ret .= '</p></div>';
1331	return $ret;
1332	}
1333
1334	/**
1335	* Normalizes path string
1336	*
1337	* @param string $path
1338	*
1339	* @return string
1340	*/
1341	private function wp_normalize_path($path) {
1342	// Wp_normalize_path is not present before WP 3.9.
1343	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1344	// Taken from WP 4.6.
1345	$path = str_replace('\\', '/', $path);
1346	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1347	if (':' === substr($path, 1, 1)) {
1348	$path = ucfirst($path);
1349	}
1350	return $path;
1351	}
1352
1353	/**
1354	* Returns templates directory path
1355	*
1356	* @return string
1357	*/
1358	public function get_templates_dir() {
1359	$templates_dir = $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates');
1360	$filtered_templates_dir = apply_filters('wp_optimize_templates_dir', $templates_dir);
1361	return is_string($filtered_templates_dir) ? $filtered_templates_dir : $templates_dir;
1362	}
1363
1364	/**
1365	* Returns templates URL
1366	*
1367	* @return string
1368	*/
1369	public function get_templates_url() {
1370	$templates_url = WPO_PLUGIN_URL . 'templates';
1371	$filtered_templates_url = apply_filters('wp_optimize_templates_url', $templates_url);
1372	return is_string($filtered_templates_url) ? $filtered_templates_url : $templates_url;
1373	}
1374
1375	/**
1376	* Return or output view content
1377	*
1378	* @param string $path - path to template, usually relative to templates/ within the WP-O directory
1379	* @param boolean $return_instead_of_echo - what to do with the results
1380	* @param array $extract_these - key/value pairs for substitution into the scope of the template
1381	*
1382	* @return string\|void
1383	*/
1384	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1385	if ($return_instead_of_echo) ob_start();
1386
1387	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1388	$prefix = $matches[1];
1389	$suffix = $matches[2];
1390	if (isset($this->template_directories[$prefix])) {
1391	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1392	}
1393	}
1394
1395	if (!isset($template_file)) {
1396	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1397	}
1398
1399	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1400
1401	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1402
1403	if (!file_exists($template_file)) {
1404	error_log("WP Optimize: template not found: ".$template_file); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log -- Using for debugging purpose such as incomplete installation
1405	echo esc_html__('Error:', 'wp-optimize').' '.esc_html__('template not found', 'wp-optimize')." (".esc_html($path).")";
1406	} else {
1407	extract($extract_these);
1408	// The following are useful variables which can be used in the template.
1409	// They appear as unused, but may be used in the $template_file.
1410	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1411	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1412	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1413	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1414	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1415	include $template_file;
1416	}
1417
1418	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1419
1420	if ($return_instead_of_echo) return ob_get_clean();
1421	}
1422
1423	/**
1424	* Build a list of template directories (stored in self::$template_directories)
1425	*/
1426	private function register_template_directories() {
1427
1428	$template_directories = array();
1429
1430	$templates_dir = $this->get_templates_dir();
1431
1432	if ($dh = opendir($templates_dir)) {
1433	while (($file = readdir($dh)) !== false) {
1434	if ('.' === $file \|\| '..' === $file) continue;
1435	if (is_dir($templates_dir.'/'.$file)) {
1436	$template_directories[$file] = $templates_dir.'/'.$file;
1437	}
1438	}
1439	closedir($dh);
1440	}
1441
1442	// Optimal hook for most extensions to hook into.
1443	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1444
1445	}
1446
1447	/**
1448	* Message to debug
1449	*
1450	* @param string $message Message to insert into the log.
1451	* @param array $context array with variables used in $message like in template,
1452	* for ex.
1453	* $message = 'Hello {message}';
1454	* $context = ['message' => 'world']
1455	* 'Hello world' string will be saved in log.
1456	*/
1457	public function log($message, $context = array()) {
1458	$this->get_logger()->debug($message, $context);
1459	}
1460
1461	/**
1462	* Format Bytes Into KB/MB
1463	*
1464	* @param mixed $bytes Number of bytes to be converted.
1465	* @param integer $decimals the number of decimal digits
1466	* @return string return the correct format size.
1467	*/
1468	public function format_size($bytes, $decimals = 2) {
1469	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1470
1471	if (1073741824 <= $bytes) {
1472	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1473	} elseif (1048576 <= $bytes) {
1474	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1475	} elseif (1024 <= $bytes) {
1476	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1477	} elseif (1 < $bytes) {
1478	$bytes = $bytes . ' bytes';
1479	} elseif (1 === (int) $bytes) {
1480	$bytes = $bytes . ' byte';
1481	} else {
1482	$bytes = '0 bytes';
1483	}
1484
1485	return $bytes;
1486	}
1487
1488	/**
1489	* Format a timestamp into a human-readable date time
1490	*
1491	* @param int $timestamp Epoch timestamp to convert
1492	* @param string $separator String separator
1493	* @return string
1494	*/
1495	public function format_date_time($timestamp, $separator = ' @ ') {
1496	return date_i18n(get_option('date_format'). $separator .get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1497	}
1498
1499	/**
1500	* Executed this function on cron event.
1501	*
1502	* @return void
1503	*/
1504	public function cron_action() {
1505
1506	$optimizer = $this->get_optimizer();
1507	$options = $this->get_options();
1508
1509	$this->log('WPO: Starting cron_action()');
1510	$options->update_option('last-optimized', time());
1511	if ('true' === $options->get_option('schedule')) {
1512	$this_options = $options->get_option('auto');
1513
1514	// Currently the output of the optimizations is not saved/used/logged.
1515	$optimizer->do_optimizations($this_options, 'auto');
1516	}
1517
1518	}
1519
1520	/**
1521	* Schedule cron tasks used by plugin.
1522	*
1523	* @return void
1524	*/
1525	private function schedule_plugin_cron_tasks() {
1526	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1527	wp_schedule_event(current_time("timestamp", 0), 'wpo_weekly', 'wpo_weekly_cron_tasks');
1528	}
1529
1530	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1531
1532	// Run 404 detector cron.
1533	$this->get_404_detector_cron();
1534	}
1535
1536	/**
1537	* Do plugin background tasks.
1538	*
1539	* @return void
1540	*/
1541	public function do_weekly_cron_tasks() {
1542	// add tasks here.
1543	$this->get_db_info()->update_plugin_json();
1544	}
1545
1546	/**
1547	* This will customize a URL with a correct Affiliate link
1548	* This function can be updated to suit any URL as longs as the URL is passed
1549	*
1550	* @param string $url - URL to check to see if it is an updraftplus match.
1551	* @param ?string $text - Text to be entered within the href a tags.
1552	* @param ?string $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1553	* @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"').
1554	* @param bool $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1555	* @return string\|void
1556	*/
1557	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1558	// Check if the URL is UpdraftPlus.
1559	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1560
1561	// Check if the variable $text is empty (null value included), otherwise assign $html.
1562	$content = empty($text) ? $html : esc_html($text);
1563
1564	// Check if $attrs is an array to convert the attributes into a string line.
1565	$str_attrs = '';
1566	if (is_array($attrs)) {
1567	foreach ($attrs as $attr => $value) {
1568	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1569	}
1570	} else {
1571	// If $attrs is empty, the `explode` function will only return an empty array.
1572	$attrs = explode('=', $attrs);
1573	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1574	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1575	}
1576
1577	// Check if it is necessary to add a target value if the url is external
1578	$is_external_url = $this->is_external_url($url);
1579	if ($is_external_url) {
1580	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1581	$str_attrs .= ' target="_blank"';
1582	}
1583
1584	$result = sprintf(
1585	'<a href="%s" %s>%s</a>',
1586	esc_url($url),
1587	$str_attrs,
1588	wp_kses_post($content)
1589	);
1590
1591	if ($return_instead_of_echo) return $result;
1592	echo wp_kses_post($result);
1593	}
1594
1595	/**
1596	* Check if a URL is external
1597	*
1598	* @param string $url
1599	* @return bool
1600	*/
1601	public function is_external_url($url) {
1602	if (empty($url)) {
1603	return false;
1604	}
1605
1606	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1607	$url = wp_parse_url($url, PHP_URL_HOST);
1608
1609	// Compare the domains and return true if they are different
1610	return $current_domain !== $url;
1611	}
1612
1613	/**
1614	* Get a URL with an eventual affiliate ID
1615	*
1616	* @param string $url
1617	* @return string
1618	*/
1619	public function maybe_add_affiliate_params($url) {
1620	// Check if the URL is UpdraftPlus.
1621	if (false !== strpos($url, '//updraftplus.com')) {
1622	// Set URL with Affiliate ID.
1623	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1624
1625	// Apply filters.
1626	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1627	}
1628	$filtered_url = apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1629	return is_string($filtered_url) ? $filtered_url : $url;
1630	}
1631
1632	/**
1633	* Setup WPO logger(s)
1634	*/
1635	public function setup_loggers() {
1636
1637	$logger = $this->get_logger();
1638	$loggers = $this->wpo_loggers();
1639
1640	if (!empty($loggers)) {
1641	foreach ($loggers as $_logger) {
1642	$logger->add_logger($_logger);
1643	}
1644	}
1645
1646	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1647	}
1648
1649	/**
1650	* Run logger actions after all optimizations done
1651	*/
1652	public function after_optimizations_logger_action() {
1653	$loggers = $this->get_logger()->get_loggers();
1654	if (!empty($loggers)) {
1655	foreach ($loggers as $logger) {
1656	if (is_a($logger, 'Updraft_Email_Logger')) {
1657	$logger->flush_log();
1658	}
1659	}
1660	}
1661	}
1662
1663	/**
1664	* Returns list of WPO loggers instances
1665	* Apply filter wp_optimize_loggers
1666	*
1667	* @return array
1668	*/
1669	public function wpo_loggers() {
1670
1671	$loggers = array();
1672	$loggers_classes_by_id = array();
1673	$options_keys = array();
1674
1675	$loggers_classes = $this->get_loggers_classes();
1676
1677	foreach ($loggers_classes as $logger_class => $source) {
1678	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1679	}
1680
1681	$options = $this->get_options();
1682
1683	$saved_loggers = $options->get_option('logging');
1684	$logger_additional_options = $options->get_option('logging-additional');
1685
1686	// create loggers classes instances.
1687	if (!empty($saved_loggers)) {
1688	// check for previous version options format.
1689	$keys = array_keys($saved_loggers);
1690
1691	// if options stored in old format then reformat it.
1692	if (false === is_numeric($keys[0])) {
1693	$_saved_loggers = array();
1694	foreach ($saved_loggers as $logger_id => $enabled) {
1695	if ($enabled) {
1696	$_saved_loggers[] = $logger_id;
1697	}
1698	}
1699
1700	// fill email with admin.
1701	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1702	$logger_additional_options['updraft_email_logger'] = array(
1703	get_option('admin_email')
1704	);
1705	}
1706
1707	$saved_loggers = $_saved_loggers;
1708	}
1709
1710	foreach ($saved_loggers as $i => $logger_id) {
1711
1712	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1713
1714	$logger_class = $loggers_classes_by_id[$logger_id];
1715
1716	$logger = new $logger_class();
1717
1718	$logger_options = $logger->get_options_list();
1719
1720	if (!empty($logger_options)) {
1721	foreach (array_keys($logger_options) as $option_name) {
1722	if (array_key_exists($option_name, $options_keys)) {
1723	$options_keys[$option_name]++;
1724	} else {
1725	$options_keys[$option_name] = 0;
1726	}
1727
1728	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1729
1730	// if options in old format then get correct value.
1731	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1732	$option_value = array_shift($logger_additional_options[$logger_id]);
1733	}
1734
1735	$logger->set_option($option_name, $option_value);
1736	}
1737	}
1738
1739	// check if logger is active.
1740	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1741
1742	if ($active) {
1743	$logger->enable();
1744	} else {
1745	$logger->disable();
1746	}
1747
1748	$loggers[] = $logger;
1749	}
1750	}
1751
1752	$filtered_loggers = apply_filters('wp_optimize_loggers', $loggers);
1753	return is_array($filtered_loggers) ? $filtered_loggers : $loggers;
1754	}
1755
1756	/**
1757	* Returns associative array with logger class name in a key and path to class file in a value.
1758	*
1759	* @return array
1760	*/
1761	public function get_loggers_classes() {
1762	$loggers_classes = array(
1763	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1764	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1765	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1766	);
1767
1768	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1769
1770	if (!empty($loggers_classes)) {
1771	foreach ($loggers_classes as $logger_class => $logger_file) {
1772	if (!class_exists($logger_class)) {
1773	if (is_file($logger_file)) {
1774	include_once($logger_file);
1775	}
1776	}
1777	}
1778	}
1779
1780	return $loggers_classes;
1781	}
1782
1783	/**
1784	* Returns information about all loggers classes.
1785	*
1786	* @return array
1787	*/
1788	public function get_loggers_classes_info() {
1789	$loggers_classes = $this->get_loggers_classes();
1790
1791	$loggers_classes_info = array();
1792
1793	if (!empty($loggers_classes)) {
1794	foreach (array_keys($loggers_classes) as $logger_class_name) {
1795
1796	if (!class_exists($logger_class_name)) continue;
1797
1798	$logger_id = strtolower($logger_class_name);
1799	$logger_class = new $logger_class_name();
1800
1801	$loggers_classes_info[$logger_id] = array(
1802	'description' => $logger_class->get_description(),
1803	'available' => $logger_class->is_available(),
1804	'allow_multiple' => $logger_class->is_allow_multiple(),
1805	'options' => $logger_class->get_options_list()
1806	);
1807	}
1808	}
1809
1810	return $loggers_classes_info;
1811	}
1812
1813	/**
1814	* Returns true if optimization works in multisite mode
1815	*
1816	* @return boolean
1817	*/
1818	public function is_multisite_mode() {
1819	return (is_multisite() && self::is_premium());
1820	}
1821
1822	/**
1823	* Returns true if the current user can run optimizations.
1824	*
1825	* @return bool
1826	*/
1827	public function can_run_optimizations(): bool {
1828	// we don't check permissions for cron jobs.
1829	if (defined('DOING_CRON') && DOING_CRON) return true;
1830
1831	if (self::is_premium() && false === user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1832	return true;
1833	}
1834
1835	/**
1836	* Returns true if current user can manage plugin options.
1837	*
1838	* @return bool
1839	*/
1840	public function can_manage_options() {
1841	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1842	return true;
1843	}
1844
1845	/**
1846	* Returns list of all sites in multisite
1847	*
1848	* @return array
1849	*/
1850	public function get_sites() {
1851	$sites = array();
1852	if (function_exists('get_sites')) {
1853	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1854	}
1855	return $sites;
1856	}
1857
1858	/**
1859	* Returns script memory limit in megabytes.
1860	*
1861	* @param string\|bool $memory_limit
1862	* @return int
1863	*/
1864	public function get_memory_limit($memory_limit = false) {
1865	// Returns in megabytes
1866	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1867	$memory_limit = rtrim($memory_limit);
1868
1869	return $this->return_bytes($memory_limit);
1870	}
1871
1872	/**
1873	* Returns free memory in bytes.
1874	*
1875	* @return int
1876	*/
1877	public function get_free_memory() {
1878	return $this->get_memory_limit() - memory_get_usage();
1879	}
1880
1881	/**
1882	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1883	*
1884	* @return int memory limit in bytes.
1885	*/
1886	public function get_script_memory_limit() {
1887	$memory_limit = $this->get_memory_limit();
1888
1889	if (defined('WP_MAX_MEMORY_LIMIT')) {
1890	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1891
1892	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1893	$memory_limit = $wp_memory_limit;
1894	}
1895	}
1896
1897	return $memory_limit;
1898	}
1899
1900	/**
1901	* Returns max packet size for database.
1902	*
1903	* @return int\|string
1904	*/
1905	public function get_max_packet_size() {
1906	global $wpdb;
1907	static $mp = 0;
1908
1909	if ($mp > 0) return $mp;
1910
1911	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1912	// Default to 1MB
1913	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1914	// 32MB
1915	if ($mp < 33554432) {
1916	$save = $wpdb->show_errors(false);
1917	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1918	$wpdb->show_errors($save);
1919
1920	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1921	// Default to 1MB
1922	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1923	}
1924
1925	return $mp;
1926	}
1927
1928	/**
1929	* Converts shorthand memory notation value to bytes.
1930	* From http://php.net/manual/en/function.ini-get.php
1931	*
1932	* @param string $val shorthand memory notation value.
1933	*
1934	* @return string
1935	*/
1936	public function return_bytes($val) {
1937	$val = trim($val);
1938	$last = strtolower($val[strlen($val)-1]);
1939	$val = (int) $val;
1940	switch ($last) {
1941	case 'g':
1942	$val *= 1024;
1943	// no break
1944	case 'm':
1945	$val *= 1024;
1946	// no break
1947	case 'k':
1948	$val *= 1024;
1949	}
1950
1951	return $val;
1952	}
1953
1954	/**
1955	* Log fatal errors to defined log destinations.
1956	*/
1957	public function log_fatal_errors() {
1958	$last_error = error_get_last();
1959
1960	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1961	$this->get_logger()->critical($last_error['message']);
1962	}
1963	}
1964
1965	/**
1966	* Close browser connection and continue script work. - Taken from UpdraftPlus
1967	*
1968	* @param string $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1969	* @return void
1970	*/
1971	public function close_browser_connection($txt = '') {
1972	if (!headers_sent()) {
1973	// Close browser connection so that it can resume AJAX polling
1974	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1975	header('Content-Type: application/json');
1976	header('Connection: close');
1977	header('Content-Encoding: none');
1978	}
1979
1980	if (session_id()) session_write_close();
1981	echo "\r\n\r\n";
1982	echo $txt; // phpcs:ignore WordPress.Security.EscapeOutput -- Output is already escaped
1983	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1984	$ob_level = ob_get_level();
1985	while ($ob_level > 0) {
1986	ob_end_flush();
1987	$ob_level--;
1988	}
1989	flush();
1990	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1991	if (function_exists('litespeed_finish_request')) litespeed_finish_request();
1992	}
1993
1994	/**
1995	* Try to change PHP script time limit.
1996	*/
1997	public function change_time_limit() {
1998	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1999
2000	// phpcs:disable
2001	// Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
2002	// Squiz.PHP.DiscouragedFunctions.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
2003	@set_time_limit($time_limit);
2004	// phpcs:enable
2005	}
2006
2007	/**
2008	* Does the request come from UDC
2009	*
2010	* @return boolean
2011	*/
2012	public function is_updraft_central_request() {
2013	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
2014	}
2015
2016	/**
2017	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
2018	*
2019	* @return boolean
2020	*/
2021	public function template_should_include_data() {
2022	/**
2023	* Filters whether data should be included in certain templates or not.
2024	*/
2025	return (bool) apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
2026	}
2027
2028	/**
2029	* Load the templates for the modal window
2030	*/
2031	public function load_modal_template() {
2032	$this->include_template('modal.php');
2033	}
2034
2035	/**
2036	* Adds compress popup template
2037	*/
2038	public function add_smush_popup_template() {
2039	if ($this->current_user_can()) {
2040	$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
2041	$this->include_template('images/smush-popup.php', false, array('compression_server_hint' => $compression_server_hint));
2042	}
2043	}
2044
2045	/**
2046	* Delete transients and semaphores data from options table.
2047	*/
2048	public function delete_transients_and_semaphores() {
2049	global $wpdb;
2050
2051	$masks = array(
2052	'updraft_locked_wpo_%',
2053	'updraft_unlocked_wpo_%',
2054	'updraft_last_lock_time_wpo_%',
2055	'updraft_semaphore_wpo_%',
2056	'wpo_locked_%',
2057	'wpo_unlocked_%',
2058	'wpo_last_lock_time_%',
2059	'wpo_semaphore_%',
2060	'_transient_timeout_wpo_%',
2061	'_transient_wpo_%',
2062	'updraft_lock_wpo_%',
2063	'wpo_last_scheduled_%',
2064	);
2065
2066	$where_parts = array();
2067	foreach ($masks as $mask) {
2068	$where_parts[] = "(`option_name` LIKE '{$mask}')";
2069	}
2070
2071	$where_clause = implode(' OR ', $where_parts);
2072	$wpdb->query($wpdb->prepare("DELETE FROM `{$wpdb->options}` WHERE %s", $where_clause));
2073	}
2074
2075	/**
2076	* Prevents bots from indexing plugins list
2077	*
2078	* @param string $output
2079	* @return string
2080	*/
2081	public function robots_txt($output) {
2082	$upload_dir = wp_upload_dir();
2083	$path = wp_parse_url($upload_dir['baseurl']);
2084	$output .= "\nUser-agent: *";
2085	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo/wpo-plugins-tables-list.json\n";
2086	return $output;
2087	}
2088
2089	/**
2090	* Returns desired enqueue version string
2091	*
2092	* @return string Enqueue version as string
2093	*/
2094	public function get_enqueue_version() {
2095	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
2096	}
2097
2098	/**
2099	* Returns script suffix string
2100	*
2101	* @return string empty or `.min` suffix string
2102	*/
2103	public function get_min_or_not_string() {
2104	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
2105	}
2106
2107	/**
2108	* Returns script suffix string with WPO_VERSION
2109	*
2110	* @return string empty or min suffix with wpo_version string
2111	*/
2112	public function get_min_or_not_internal_string() {
2113	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
2114	}
2115
2116	/**
2117	* Instantiate Ajax handling class
2118	*/
2119	private function load_ajax_handler() {
2120	WPO_Ajax::get_instance();
2121	}
2122
2123	/**
2124	* Get instance of WP_Optimize_Table_Management
2125	*
2126	* @return WP_Optimize_Table_Management
2127	*/
2128	public function get_table_management() {
2129	return WP_Optimize_Table_Management::get_instance();
2130	}
2131
2132	/**
2133	* Get instance of WP_Optimize_404_Detector
2134	*
2135	* @return WP_Optimize_404_Detector
2136	*/
2137	public function get_404_detector() {
2138	return WP_Optimize_404_Detector::get_instance();
2139	}
2140
2141	/**
2142	* Returns the message used to notify the user that the PHP version or WordPress version doesn't meet the requirements.
2143	*
2144	* @return string
2145	*/
2146	public function get_minimum_requirements_notice_message() {
2147	// translators: %1$s is minimum required PHP version, %2$s is minimum required WordPress version
2148	return sprintf(esc_html__('WP-Optimize requires a minimum PHP version of %1$s and WordPress version of %2$s or higher', 'wp-optimize'), esc_html(WPO_REQUIRED_PHP_VERSION), esc_html(WPO_REQUIRED_WP_VERSION));
2149	}
2150
2151	/**
2152	* Output notice when PHP version or WordPress version is not meet for WP-Optimize.
2153	*
2154	* @return void
2155	*/
2156	public function output_minimum_requirements_notice() {
2157	?>
2158	<div class="notice notice-error is-dismissible">
2159	<p><?php echo $this->get_minimum_requirements_notice_message(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Output is already escaped ?></p>
2160	</div>
2161	<?php
2162	}
2163	}
2164
2165	/**
2166	* Unschedule specific tasks:
2167	* `wpo_cron_event2` => DB optimizations
2168	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
2169	*
2170	* @return void
2171	*/
2172	function wpo_cron_deactivate() {
2173	WP_Optimize()->log('running wpo_cron_deactivate()');
2174	wp_clear_scheduled_hook('wpo_cron_event2');
2175	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
2176	}
2177
2178	function WP_Optimize() {
2179	return WP_Optimize::instance();
2180	}
2181
2182	endif;
2183
2184	$GLOBALS['wp_optimize'] = WP_Optimize();
2185