wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 4.5.5, 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: 4.5.5
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', '4.5.5');
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.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	'minify',
270	'optimizations',
271	'webp',
272	);
273	}
274
275	/**
276	* Initialize Admin class to load admin UI
277	*/
278	private function load_admin() {
279	$this->get_admin_instance();
280	}
281
282	/**
283	* Returns Bypass class instance
284	*
285	* @return WP_Optimize_Bypass
286	*/
287	private function get_bypass_instance() {
288	return WP_Optimize_Bypass::instance();
289	}
290
291	/**
292	* Returns Admin class instance
293	*
294	* @return WP_Optimize_Admin
295	*/
296	public function get_admin_instance() {
297	return WP_Optimize_Admin::instance();
298	}
299
300	/**
301	* Detect when an active plugin or theme is updated, and trigger an action
302	*
303	* @param object $upgrader_object
304	* @param array $options
305	* @return void
306	*/
307	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
308	if (empty($options) \|\| !isset($options['type'])) return;
309
310	$should_purge_cache = false;
311	$skin = $upgrader_object->skin;
312	if ('plugin' === $options['type']) {
313	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
314	$plugins = array();
315	if (!empty($options['plugin'])) {
316	$plugins = array($options['plugin']);
317	} elseif (!empty($options['plugins']) && is_array($options['plugins'])) {
318	$plugins = $options['plugins'];
319	}
320
321	foreach ($plugins as $plugin) {
322	if (!empty($plugin) && ! is_wp_error($upgrader_object->result)) {
323	if (is_plugin_active($plugin)) {
324	$should_purge_cache = true;
325	break;
326	}
327	}
328	}
329	} elseif ('theme' === $options['type']) {
330	$active_theme = get_stylesheet();
331	$parent_theme = get_template();
332	// A theme is updated using the upload system
333	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
334	$updated_theme = $upgrader_object->result['destination_name'];
335	// Check if the theme is in use
336	if ($active_theme === $updated_theme \|\| $parent_theme === $updated_theme) {
337	$should_purge_cache = true;
338	}
339	// A theme is updated using the classic update system
340	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
341	// Check if the theme is in use
342	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
343	$should_purge_cache = true;
344	}
345	}
346	}
347
348	/**
349	* Action executed when an active theme or plugin was updated
350	*/
351	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
352
353	}
354
355	/**
356	* Sets a flag to indicate an import action is done, if needed
357	*/
358	public function maybe_schedule_update_record_count_event() {
359	if (!wp_next_scheduled('wpo_update_record_count_event')) {
360	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
361	}
362	}
363
364	public function admin_page_wpo_images_smush() {
365	$options = Updraft_Smush_Manager()->get_smush_options();
366	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
367	$sites = WP_Optimize()->get_sites();
368	$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
369	$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));
370	$this->add_smush_popup_template();
371	}
372
373	public static function instance() {
374	if (empty(self::$_instance)) {
375	self::$_instance = new self();
376	}
377	return self::$_instance;
378	}
379
380	public function get_optimizer() {
381	return WP_Optimizer::instance();
382	}
383
384	/**
385	* Adds 3rd party plugin compatibilities.
386	*/
387	public function load_compatibilities() {
388
389	if (class_exists('Polylang')) {
390	WPO_Polylang_Compatibility::instance();
391	}
392
393	WPO_Page_Builder_Compatibility::instance();
394	WPO_KD_Submissions_Compatibility::instance();
395
396	if (class_exists('Custom_Permalinks')) {
397	WPO_Custom_Permalink_Compatibility::instance();
398	}
399
400	if (class_exists('TRP_Translate_Press')) {
401	WPO_TranslatePress_Compatibility::instance();
402	}
403
404	do_action('wpo_load_compatibilities');
405	}
406
407	/**
408	* Get and instantiate WP_Optimize_Minify
409	*
410	* @return WP_Optimize_Minify
411	*/
412	public function get_minify() {
413	return WP_Optimize_Minify::instance();
414	}
415
416	public function get_options() {
417	return WP_Optimize_Options::instance();
418	}
419
420	public function get_notices() {
421	return WP_Optimize_Notices::instance();
422	}
423
424	/**
425	* Get and instantiate WP_Optimize_Delay_JS
426	*
427	* @return WP_Optimize_Delay_JS
428	*/
429	private function get_delay_js() {
430	return WP_Optimize_Delay_JS::instance();
431	}
432
433	/**
434	* Returns instance of WPO_Page_Optimizer class.
435	*
436	* @return WPO_Page_Optimizer
437	*/
438	public function get_page_optimizer() {
439	return WPO_Page_Optimizer::instance();
440	}
441
442	/**
443	* Returns instance 404 Detector Cron class.
444	*
445	* @return WP_Optimize_404_Detector_Cron
446	*/
447	private function get_404_detector_cron() {
448	return WP_Optimize_404_Detector_Cron::get_instance();
449	}
450
451	/**
452	* Returns instance of WPO_Page_Cache class.
453	*
454	* @return WPO_Page_Cache
455	*/
456	public function get_page_cache() {
457	return WPO_Page_Cache::instance();
458	}
459
460	/**
461	* Returns instance of WP_Optimize_WebP class.
462	*
463	* @return WP_Optimize_WebP
464	*/
465	public function get_webp_instance() {
466	return WP_Optimize_WebP::get_instance();
467	}
468
469	/**
470	* Returns instance of WP_Optimize_Server_Compatibility class.
471	*
472	* @return WP_Optimize_Server_Compatibility
473	*/
474	public function get_server_compatibility_instance(): WP_Optimize_Server_Compatibility {
475	return WP_Optimize_Server_Compatibility::get_instance();
476	}
477
478	/**
479	* Create instance of WP_Optimize_Browser_Cache.
480	*
481	* @return WP_Optimize_Browser_Cache
482	*/
483	public function get_browser_cache() {
484	return WP_Optimize_Browser_Cache::instance();
485	}
486
487	/**
488	* Returns WP_Optimize_Database_Information instance.
489	*
490	* @return WP_Optimize_Database_Information
491	*/
492	public function get_db_info() {
493	return WP_Optimize_Database_Information::instance();
494	}
495
496	/**
497	* Returns instance of WP_Optimize_Gzip_Compression.
498	*
499	* @return WP_Optimize_Gzip_Compression
500	*/
501	public function get_gzip_compression() {
502	return WP_Optimize_Gzip_Compression::instance();
503	}
504
505	/**
506	* Create instance of WP_Optimize_Htaccess.
507	*
508	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
509	* @return WP_Optimize_Htaccess
510	*/
511	public static function get_htaccess($htaccess_file = '') {
512	return new WP_Optimize_Htaccess($htaccess_file);
513	}
514
515	/**
516	* Return instance of Updraft_Logger
517	*
518	* @return Updraft_Logger
519	*/
520	public function get_logger() {
521	return Updraft_Logger::instance();
522	}
523
524	/**
525	* Check if the current page belongs to WP-Optimize.
526	*
527	* @return bool
528	*/
529	public function is_wpo_page() {
530	$current_screen = get_current_screen();
531
532	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
533	}
534
535	/**
536	* Enqueue scripts and styles on WP-Optimize pages.
537	*/
538	public function admin_enqueue_scripts() {
539	global $wp_version;
540	$enqueue_version = $this->get_enqueue_version();
541	$min_or_not = $this->get_min_or_not_string();
542	$min_or_not_internal = $this->get_min_or_not_internal_string();
543
544	// Register or enqueue common scripts
545	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
546	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
547	wp_register_script('wp-optimize-block-ui', WPO_PLUGIN_URL.'js/blockUI'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version);
548	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
549
550	// load scripts and styles only on WP-Optimize pages.
551	if (!$this->is_wpo_page()) return;
552
553	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
554
555	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
556
557	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
558	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js', 'wp-optimize-block-ui'), $enqueue_version);
559	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$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'), $enqueue_version);
560	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
561	// Using table sorter to help with organising the DB size on Table Information
562	// https://github.com/tofsjonas/sortable/
563	wp_enqueue_script('sortable-js', WPO_PLUGIN_URL.'js/sortable/sortable'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
564	wp_enqueue_script('sortable-a11y-js', WPO_PLUGIN_URL.'js/sortable/sortable.a11y'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
565
566	wp_enqueue_style('sortable-css', WPO_PLUGIN_URL.'css/sortable/sortable'.$min_or_not_internal.'.css', array(), $enqueue_version);
567
568	$js_variables = $this->wpo_js_translations();
569	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
570	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
571
572	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
573
574	$status_report_dependencies = array('wp-optimize-admin-js');
575
576	// Only include wp-api-fetch if WP >= 5.0
577	if (version_compare($wp_version, '5.0', '>=')) {
578	$status_report_dependencies[] = 'wp-api-fetch';
579	}
580
581	wp_enqueue_script('wp-optimize-status-report', WPO_PLUGIN_URL.'js/status'.$min_or_not_internal.'.js', $status_report_dependencies, $enqueue_version);
582
583	wp_enqueue_script('js-zip', WPO_PLUGIN_URL.'/js/jszip/jszip' . $min_or_not . '.js', array(), $enqueue_version);
584
585	}
586
587	/**
588	* Enqueue any required front-end scripts
589	*
590	* @return void
591	*/
592	public function frontend_enqueue_scripts() {
593	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
594	$enqueue_version = $this->get_enqueue_version();
595	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
596
597	// Register or enqueue common scripts
598	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
599	}
600
601	/**
602	* Load Task Manager
603	*
604	* @return Updraft_Smush_Manager
605	*/
606	public function get_task_manager() {
607	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
608
609	Updraft_Tasks_Activation::check_updates();
610
611	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
612	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
613	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
614
615	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
616	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
617
618	return Updraft_Smush_Manager();
619	}
620
621	/**
622	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
623	*
624	* @returns bool
625	*/
626	public static function is_premium() {
627	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
628	$wp_optimize_premium = WP_Optimize_Premium();
629	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
630	}
631	return false;
632	}
633
634	/**
635	* 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.
636	*
637	* @return bool
638	*/
639	public function is_apache_server() {
640	global $is_apache;
641	return (bool) $is_apache;
642	}
643
644	/**
645	* Check if script running on IIS web server.
646	*
647	* @return bool
648	*/
649	public function is_IIS_server() {
650	global $is_IIS, $is_iis7;
651	return $is_IIS \|\| $is_iis7;
652	}
653
654	/**
655	* Check if Apache module or modules active.
656	*
657	* @param string\|array $module - single Apache module name or list of Apache module names.
658	*
659	* @return bool\|null - if null, the result was indeterminate
660	*/
661	public function is_apache_module_loaded($module) {
662	if (!$this->is_apache_server()) return false;
663
664	if (!function_exists('apache_get_modules')) return null;
665
666	$module_loaded = true;
667
668	if (is_array($module)) {
669	foreach ($module as $single_module) {
670	if (!in_array($single_module, apache_get_modules())) {
671	$module_loaded = false;
672	break;
673	}
674	}
675	} else {
676	$module_loaded = in_array($module, apache_get_modules());
677	}
678
679	return $module_loaded;
680	}
681
682	/**
683	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
684	*/
685	public function plugins_loaded() {
686
687	if (!$this->is_minimum_requirement_met()) {
688	$this->add_notice_minimum_requirements_not_met();
689	$this->deactivate_plugin();
690	WPO_Deactivation::actions();
691	return;
692	}
693
694	if (is_admin() && current_user_can($this->capability_required())) {
695	WP_Optimize_Heartbeat::get_instance();
696	}
697
698	if ($this->get_server_compatibility_instance()->does_server_handle_cache()) {
699	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
700
701	// If newly migrated to a server that handles cache, disable wpo cache
702	$cache = $this->get_page_cache();
703	if ($cache->is_enabled()) {
704	$cache->disable();
705	}
706	}
707
708	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
709
710	// Run Premium loader if it exists
711	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
712	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
713	}
714
715	if (!self::is_premium()) {
716	$this->get_server_compatibility_instance()->maybe_disable_unsupported_table_optimization();
717	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
718	}
719
720	// load defaults
721	WP_Optimize()->get_options()->set_default_options();
722
723	// Initialize loggers.
724	add_action('init', array($this, 'setup_loggers'));
725
726	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
727	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
728	deactivate_plugins($free_plugin);
729
730	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise, it contains the path to free.
731	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
732	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
733
734	if (!is_file($advanced_cache_filename) && wp_is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && wp_is_writable($advanced_cache_filename))) {
735	file_put_contents($advanced_cache_filename, '');
736	}
737	}
738
739	// Registers the notice letting the user know it cannot be active if premium is active.
740	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
741	return;
742	}
743
744	add_action('init', array($this, 'init'));
745
746	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
747	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
748	}
749
750	/**
751	* Methods needed to be run in init hook.
752	*
753	* @return void
754	*/
755	public function init() {
756	$this->load_language_file();
757	$this->schedule_plugin_cron_tasks();
758	$this->init_page_cache();
759	$this->get_minify();
760	$this->get_delay_js();
761
762	// Load 3rd party plugin compatibilities.
763	$this->load_compatibilities();
764
765	$this->run_updates();
766
767	// We need this here because webp can be unavailable because of server moves
768	// This deletes already converted webp images and original image file when a media is deleted
769	WP_Optimize_WebP_Images::get_instance();
770
771	// Loads the task manager
772	$this->get_task_manager();
773
774	// Include WebP
775	if (WPO_USE_WEBP_CONVERSION) {
776	$this->get_webp_instance();
777	}
778
779	$this->get_onboarding()->init();
780	}
781
782	/**
783	* Loads the language file.
784	*
785	* @return void
786	*/
787	private function load_language_file() {
788	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
789	}
790
791	/**
792	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
793	* (e.g. "central" folder)
794	*
795	* @param array $hosts List of plugins having the "central" library integrated into them
796	*
797	* @return array
798	*/
799	public function attach_updraftcentral_host($hosts) {
800	$hosts[] = 'wp-optimize';
801	return $hosts;
802	}
803
804	/**
805	* Filter cache tabs (when the server handles it or do not allow it, like Kinsta)
806	*
807	* @param array $tabs An array of tabs
808	*
809	* @return array $tabs An array of tabs
810	*/
811	public function filter_cache_tabs($tabs) {
812	unset($tabs['preload']);
813	unset($tabs['advanced']);
814	unset($tabs['gzip']);
815	unset($tabs['settings']);
816	return $tabs;
817	}
818
819	/**
820	* Check whether one of free/Premium is active (whether it is this instance or not)
821	*
822	* @param string $which - 'free' or 'premium'
823	*
824	* @return string\|boolean - plugin path (if installed) or false if not
825	*/
826	public function is_active($which = 'free') {
827	$active_plugins = $this->get_active_plugins();
828	foreach ($active_plugins as $file) {
829	if ('wp-optimize.php' == basename($file)) {
830	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
831	if (('free' === $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' !== $which && file_exists($plugin_dir.'/premium.php'))) return $file;
832	}
833	}
834	return false;
835	}
836
837	/**
838	* Gets an array of plugins active on either the current site, or site-wide
839	*
840	* @return array - a list of plugin paths (relative to the plugin directory)
841	*/
842	private function get_active_plugins() {
843	// Gets all active plugins on the current site
844	$active_plugins = (array) get_option('active_plugins', array());
845
846	if (is_multisite()) {
847	$network_active_plugins = get_site_option('active_sitewide_plugins');
848	if (!empty($network_active_plugins)) {
849	$network_active_plugins = array_keys($network_active_plugins);
850	$active_plugins = array_merge($active_plugins, $network_active_plugins);
851	}
852	}
853
854	return $active_plugins;
855	}
856
857	/**
858	* This function checks whether a specific plugin is installed, and returns information about it
859	*
860	* @param string $name Specify "Plugin Name" to return details about it.
861	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
862	*/
863	public function is_installed($name) {
864
865	// Needed to have the 'get_plugins()' function
866	include_once(ABSPATH.'wp-admin/includes/plugin.php');
867
868	// Gets all plugins available
869	$get_plugins = get_plugins();
870
871	$active_plugins = $this->get_active_plugins();
872
873	$plugin_info = array();
874	$plugin_info['installed'] = false;
875	$plugin_info['active'] = false;
876
877	// Loops around each plugin available.
878	foreach ($get_plugins as $key => $value) {
879	// If the plugin name matches that of the specified name, it will gather details.
880	if ($value['Name'] !== $name && $value['TextDomain'] !== $name) continue;
881	$plugin_info['installed'] = true;
882	$plugin_info['name'] = $key;
883	$plugin_info['version'] = $value['Version'];
884	if (in_array($key, $active_plugins)) {
885	$plugin_info['active'] = true;
886	}
887	break;
888	}
889	return $plugin_info;
890	}
891
892	/**
893	* This is a notice to show users that premium is installed
894	*/
895	public function show_admin_notice_premium() {
896	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.esc_html__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
897	if (isset($_GET['activate'])) unset($_GET['activate']); // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- only unsetting value, not using it.
898	}
899
900	/**
901	* Show update to Premium notice for non-premium multisite.
902	*/
903	public function show_multisite_update_to_premium_notice() {
904	if (!is_multisite() \|\| self::is_premium()) return;
905
906	echo '<p><a href="'.esc_url($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>';
907	}
908
909	public function admin_init() {
910	$pagenow = $GLOBALS['pagenow'];
911
912	$this->register_template_directories();
913
914	if (('index.php' === $pagenow && current_user_can('update_plugins')) \|\| ('index.php' === $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
915	$options = $this->get_options();
916
917	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
918
919	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
920	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
921	$installed_for = (time() - $installed);
922	}
923
924	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
925	add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
926	}
927	}
928
929	if ($this->is_wp_smush_installed()) {
930	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
931	}
932	if ($this->get_options()->get_option('404_detector', 0)) {
933	WP_Optimize_Performance::get_instance($this->get_404_detector())->init();
934	}
935	}
936
937	/**
938	* Checks whether the WP Smush plugin is active or not
939	*
940	* @return bool
941	*/
942	private function is_wp_smush_installed() {
943	return is_plugin_active('wp-smushit/wp-smush.php');
944	}
945
946	/**
947	* Remove WPO plugin name from WP Smushit transient value
948	*
949	* @return array $active_plugins
950	*/
951	public function modify_wp_smush_conflict_check($active_plugins) {
952	// This can be boolean value since it is return value of get_transient
953	if (!is_array($active_plugins)) return $active_plugins;
954
955	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
956	unset($active_plugins[$key]);
957	}
958	return $active_plugins;
959	}
960
961	/**
962	* Get the installation or update notice instance
963	*
964	* @return WP_Optimize_Install_Or_Update_Notice
965	*/
966	public function get_install_or_update_notice() {
967	static $instance = null;
968	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
969	$instance = new WP_Optimize_Install_Or_Update_Notice();
970	return $instance;
971	}
972
973	/**
974	* Display an admin notice for an upgraded version.
975	*/
976	public function show_admin_notice_upgraded() {
977	$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
978	'is_premium' => WP_Optimize::is_premium()
979	));
980	}
981
982	/**
983	* Returns required capability string
984	*
985	* @return string
986	*/
987	public function capability_required() {
988	$capability = 'manage_options';
989	$filtered_capability = apply_filters('wp_optimize_capability_required', $capability);
990	return is_string($filtered_capability) ? $filtered_capability : $capability;
991	}
992
993	/**
994	* Returns array of translations used in javascript code.
995	*
996	* @return array
997	*/
998	public function wpo_js_translations() {
999	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
1000	$translations = array(
1001	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
1002	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
1003	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
1004	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
1005	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
1006	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
1007	'table_optimization_timeout' => 120000,
1008	'add' => __('Add', 'wp-optimize'),
1009	'cancel' => __('Cancel', 'wp-optimize'),
1010	'cancelling' => __('Cancelling...', 'wp-optimize'),
1011	'enable' => __('Enable', 'wp-optimize'),
1012	'disable' => __('Disable', 'wp-optimize'),
1013	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
1014	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
1015	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
1016	// translators: %s is the table name
1017	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
1018	// translators: %s is the table name
1019	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
1020	// translators: %s is the table name
1021	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
1022	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
1023	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
1024	'update' => __('Update', 'wp-optimize'),
1025	'run_now' => __('Run now', 'wp-optimize'),
1026	'starting_preload' => __('Started preload...', 'wp-optimize'),
1027	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
1028	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
1029	'number_of_files' => __('Number of files:', 'wp-optimize'),
1030	'toggle_info' => __('Show information', 'wp-optimize'),
1031	'delete_file' => __('Delete', 'wp-optimize'),
1032	'deleting' => __('Deleting...', 'wp-optimize'),
1033	'added_to_list' => __('Added to the list', 'wp-optimize'),
1034	'added_notice' => __('The file was added to the list', 'wp-optimize'),
1035	'save_notice' => __('Save the changes', 'wp-optimize'),
1036	'saving' => __('Saving...', 'wp-optimize'),
1037	'clearing_cache' => __('Clearing cache...', 'wp-optimize'),
1038	'creating_cache' => __('Creating cache...', 'wp-optimize'),
1039	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
1040	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
1041	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
1042	'loading_data' => __('Loading data...', 'wp-optimize'),
1043	'spinner_src' => esc_url(admin_url('images/spinner-2x.gif')),
1044	'logo_src' => esc_url(WPO_PLUGIN_URL.'images/notices/wp_optimize_logo.png'),
1045	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
1046	'sites' => $this->get_sites(),
1047	'user_always_ignores_table_deletion_warning' => (bool) get_user_meta(get_current_user_id(), 'wpo-ignores-table-deletion-warning', true),
1048	'user_always_ignores_post_meta_deletion_warning' => (bool) get_user_meta(get_current_user_id(), 'wpo-ignores-post-meta-deletion-warning', true),
1049	'user_always_ignores_orphaned_relationship_data_deletion_warning' => (bool) get_user_meta(get_current_user_id(), 'wpo-ignores-orphaned-relationship-data-deletion-warning', true),
1050	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
1051	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
1052	'network_site_url' => network_site_url(),
1053	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
1054	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
1055	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
1056	'importing' => __('Importing...', 'wp-optimize'),
1057	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
1058	'exported_on' => __('Which was exported on:', 'wp-optimize'),
1059	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
1060	'select_destination' => __('Select destination', 'wp-optimize'),
1061	'show' => __('Show', 'wp-optimize'),
1062	'hide' => __('Hide', 'wp-optimize'),
1063	'please_wait' => __('Please wait a moment...', 'wp-optimize'),
1064	'clipboard_failed' => __('Copy to clipboard failed, please do it manually', 'wp-optimize'),
1065	'clipboard_success' => __('System status has been copied to the clipboard', 'wp-optimize'),
1066	'show_information' => __('Show information', 'wp-optimize'),
1067	'hide_information' => __('Hide information', 'wp-optimize'),
1068	'data_not_available' => __('Not available', 'wp-optimize'),
1069	'something_wrong_try_again' => __('Something went wrong; please try again.', 'wp-optimize')
1070	);
1071	$filtered_translations = apply_filters('wpo_js_translations', $translations);
1072	return is_array($filtered_translations) ? $filtered_translations : $translations;
1073	}
1074
1075	/**
1076	* Add settings link on plugin page
1077	*
1078	* @param array $links Passing through the URL to be used within the HREF.
1079	* @return array Returns the Links.
1080	*/
1081	public function plugin_settings_link($links) {
1082
1083	$admin_page_url = $this->get_options()->admin_page_url();
1084	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
1085
1086	if (!self::is_premium()) {
1087	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '&utm_content=plugin-page' . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
1088	array_unshift($links, $premium_link);
1089	}
1090
1091	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
1092	array_unshift($links, $settings_link);
1093
1094	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
1095	array_unshift($links, $optimize_link);
1096	return $links;
1097	}
1098
1099	/**
1100	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
1101	*
1102	* @param string $content String for output to column
1103	* @param object $table_info Object with table info.
1104	*
1105	* @return string
1106	*/
1107	public function tables_list_additional_column_data($content, $table_info) {
1108	if ($table_info->is_needing_repair) {
1109	$content .= '<div class="wpo_button_wrap">'
1110	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
1111	. '<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
1112	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1113	. '</div>';
1114	}
1115
1116	// table belongs to plugin.
1117	if ($table_info->can_be_removed) {
1118	$content .= '<div>'
1119	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
1120	. '<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
1121	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1122	. '</div>';
1123	}
1124
1125	// Add option for MyISAM to InnoDB conversion.
1126	if ('MyISAM' === $table_info->Engine) {
1127	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
1128	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
1129	. '<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
1130	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1131	. '</div>';
1132
1133	}
1134
1135	return $content;
1136	}
1137
1138	/**
1139	* Initialize WP-Optimize page cache.
1140	*/
1141	private function init_page_cache() {
1142	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
1143	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
1144	$this->_cache_init_status = $this->get_page_cache()->enable();
1145	}
1146	}
1147	}
1148
1149	/**
1150	* Get init_page_cache() status.
1151	*
1152	* @return bool\|WP_Error
1153	*/
1154	public function get_init_page_cache_status() {
1155	return $this->_cache_init_status;
1156	}
1157
1158	/**
1159	* Schedules cron event based on selected schedule type
1160	*
1161	* @return void
1162	*/
1163	public function cron_activate() {
1164	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
1165
1166	$options = $this->get_options();
1167
1168	if (false === $options->get_option('schedule')) {
1169	$options->set_default_options();
1170	} else {
1171	if ('true' === $options->get_option('schedule')) {
1172	if (!wp_next_scheduled('wpo_cron_event2')) {
1173	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
1174
1175	// Backward compatibility
1176	if ('wpo_otherweekly' === $schedule_type) $schedule_type = 'wpo_fortnightly';
1177
1178	$this_time = (86400 * 7);
1179
1180	switch ($schedule_type) {
1181	case "wpo_daily":
1182	$this_time = 86400;
1183	break;
1184
1185	case "wpo_weekly":
1186	$this_time = (86400 * 7);
1187	break;
1188
1189	case "wpo_fortnightly":
1190	$this_time = (86400 * 14);
1191	break;
1192
1193	case "wpo_monthly":
1194	$this_time = (86400 * 30);
1195	break;
1196	}
1197
1198	add_action('wpo_cron_event2', array($this, 'cron_action'));
1199	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1200	WP_Optimize()->log('running wp_schedule_event()');
1201	if (is_wp_error($result)) {
1202	$error_msg = $result->get_error_message();
1203	WP_Optimize()->log($error_msg);
1204	WP_Optimize()->log(print_r($result, true)); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r -- Using for debugging purpose, logged into separate file
1205	} else {
1206	WP_Optimize()->log($result);
1207	}
1208	}
1209	}
1210	}
1211	}
1212
1213	/**
1214	* Clears all cron events
1215	*
1216	* @return void
1217	*/
1218	public function wpo_cron_deactivate() {
1219	$cron_jobs = _get_cron_array();
1220	foreach ($cron_jobs as $job) {
1221	foreach (array_keys($job) as $hook) {
1222	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1223	}
1224	}
1225	}
1226
1227	/**
1228	* Scheduler public functions to update schedulers
1229	*
1230	* @param array $schedules An array of schedules being passed.
1231	* @return array An array of schedules being returned.
1232	*/
1233	public function cron_schedules($schedules) {
1234	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1235	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1236	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1237	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1238	return $schedules;
1239	}
1240
1241	/**
1242	* Returns count of overdue cron jobs.
1243	*
1244	* @return integer
1245	*/
1246	public function howmany_overdue_crons() {
1247	$how_many_overdue = 0;
1248	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1249	$crons = _get_cron_array();
1250	if (is_array($crons)) {
1251	$timenow = time();
1252	foreach ($crons as $jt => $job) {
1253	if ($jt < $timenow) {
1254	$how_many_overdue++;
1255	}
1256	}
1257	}
1258	}
1259	return $how_many_overdue;
1260	}
1261
1262	/**
1263	* Run updates on plugin activation.
1264	*/
1265	public function run_updates() {
1266	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1267	WP_Optimize_Updates::check_updates();
1268	}
1269
1270	/**
1271	* Returns warning about overdue crons.
1272	*
1273	* @param int $howmany count of overdue crons
1274	* @return string
1275	*/
1276	public function show_admin_warning_overdue_crons($howmany) {
1277	$ret = '<div class="updated below-h2"><p>';
1278	// translators: %d is number of overdue cron jobs
1279	$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>';
1280	$ret .= '</p></div>';
1281	return $ret;
1282	}
1283
1284	/**
1285	* Normalizes path string
1286	*
1287	* @param string $path
1288	*
1289	* @return string
1290	*/
1291	private function wp_normalize_path($path) {
1292	// Wp_normalize_path is not present before WP 3.9.
1293	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1294	// Taken from WP 4.6.
1295	$path = str_replace('\\', '/', $path);
1296	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1297	if (':' === substr($path, 1, 1)) {
1298	$path = ucfirst($path);
1299	}
1300	return $path;
1301	}
1302
1303	/**
1304	* Returns templates directory path
1305	*
1306	* @return string
1307	*/
1308	public function get_templates_dir() {
1309	$templates_dir = $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates');
1310	$filtered_templates_dir = apply_filters('wp_optimize_templates_dir', $templates_dir);
1311	return is_string($filtered_templates_dir) ? $filtered_templates_dir : $templates_dir;
1312	}
1313
1314	/**
1315	* Returns templates URL
1316	*
1317	* @return string
1318	*/
1319	public function get_templates_url() {
1320	$templates_url = WPO_PLUGIN_URL . 'templates';
1321	$filtered_templates_url = apply_filters('wp_optimize_templates_url', $templates_url);
1322	return is_string($filtered_templates_url) ? $filtered_templates_url : $templates_url;
1323	}
1324
1325	/**
1326	* Return or output view content
1327	*
1328	* @param string $path - path to template, usually relative to templates/ within the WP-O directory
1329	* @param boolean $return_instead_of_echo - what to do with the results
1330	* @param array $extract_these - key/value pairs for substitution into the scope of the template
1331	*
1332	* @return string\|void
1333	*/
1334	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1335	if ($return_instead_of_echo) ob_start();
1336
1337	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1338	$prefix = $matches[1];
1339	$suffix = $matches[2];
1340	if (isset($this->template_directories[$prefix])) {
1341	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1342	}
1343	}
1344
1345	if (!isset($template_file)) {
1346	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1347	}
1348
1349	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1350
1351	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1352
1353	if (!file_exists($template_file)) {
1354	error_log("WP Optimize: template not found: ".$template_file); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log -- Using for debugging purpose such as incomplete installation
1355	echo esc_html__('Error:', 'wp-optimize').' '.esc_html__('template not found', 'wp-optimize')." (".esc_html($path).")";
1356	} else {
1357	extract($extract_these);
1358	// The following are useful variables which can be used in the template.
1359	// They appear as unused, but may be used in the $template_file.
1360	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1361	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1362	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1363	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1364	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1365	include $template_file;
1366	}
1367
1368	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1369
1370	if ($return_instead_of_echo) return ob_get_clean();
1371	}
1372
1373	/**
1374	* Build a list of template directories (stored in self::$template_directories)
1375	*/
1376	private function register_template_directories() {
1377
1378	$template_directories = array();
1379
1380	$templates_dir = $this->get_templates_dir();
1381
1382	if ($dh = opendir($templates_dir)) {
1383	while (($file = readdir($dh)) !== false) {
1384	if ('.' === $file \|\| '..' === $file) continue;
1385	if (is_dir($templates_dir.'/'.$file)) {
1386	$template_directories[$file] = $templates_dir.'/'.$file;
1387	}
1388	}
1389	closedir($dh);
1390	}
1391
1392	// Optimal hook for most extensions to hook into.
1393	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1394
1395	}
1396
1397	/**
1398	* Message to debug
1399	*
1400	* @param string $message Message to insert into the log.
1401	* @param array $context array with variables used in $message like in template,
1402	* for ex.
1403	* $message = 'Hello {message}';
1404	* $context = ['message' => 'world']
1405	* 'Hello world' string will be saved in log.
1406	*/
1407	public function log($message, $context = array()) {
1408	$this->get_logger()->debug($message, $context);
1409	}
1410
1411	/**
1412	* Format Bytes Into KB/MB
1413	*
1414	* @param mixed $bytes Number of bytes to be converted.
1415	* @param integer $decimals the number of decimal digits
1416	* @return string return the correct format size.
1417	*/
1418	public function format_size($bytes, $decimals = 2) {
1419	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1420
1421	if (1073741824 <= $bytes) {
1422	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1423	} elseif (1048576 <= $bytes) {
1424	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1425	} elseif (1024 <= $bytes) {
1426	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1427	} elseif (1 < $bytes) {
1428	$bytes = $bytes . ' bytes';
1429	} elseif (1 === (int) $bytes) {
1430	$bytes = $bytes . ' byte';
1431	} else {
1432	$bytes = '0 bytes';
1433	}
1434
1435	return $bytes;
1436	}
1437
1438	/**
1439	* Format a timestamp into a human-readable date time
1440	*
1441	* @param int $timestamp Epoch timestamp to convert
1442	* @param string $separator String separator
1443	* @return string
1444	*/
1445	public function format_date_time($timestamp, $separator = ' @ ') {
1446	return date_i18n(get_option('date_format'). $separator .get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1447	}
1448
1449	/**
1450	* Executed this function on cron event.
1451	*
1452	* @return void
1453	*/
1454	public function cron_action() {
1455
1456	$optimizer = $this->get_optimizer();
1457	$options = $this->get_options();
1458
1459	$this->log('WPO: Starting cron_action()');
1460	$options->update_option('last-optimized', time());
1461	if ('true' === $options->get_option('schedule')) {
1462	$this_options = $options->get_option('auto');
1463
1464	// Currently the output of the optimizations is not saved/used/logged.
1465	$optimizer->do_optimizations($this_options, 'auto');
1466	}
1467
1468	}
1469
1470	/**
1471	* Schedule cron tasks used by plugin.
1472	*
1473	* @return void
1474	*/
1475	private function schedule_plugin_cron_tasks() {
1476	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1477	wp_schedule_event(current_time("timestamp", 0), 'wpo_weekly', 'wpo_weekly_cron_tasks');
1478	}
1479
1480	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1481
1482	// Run 404 detector cron.
1483	$this->get_404_detector_cron();
1484	}
1485
1486	/**
1487	* Do plugin background tasks.
1488	*
1489	* @return void
1490	*/
1491	public function do_weekly_cron_tasks() {
1492	// add tasks here.
1493	$this->get_db_info()->update_plugin_json();
1494	}
1495
1496	/**
1497	* This will customize a URL with a correct Affiliate link
1498	* This function can be updated to suit any URL as longs as the URL is passed
1499	*
1500	* @param string $url - URL to check to see if it is an updraftplus match.
1501	* @param ?string $text - Text to be entered within the href a tags.
1502	* @param ?string $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1503	* @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"').
1504	* @param bool $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1505	* @return string\|void
1506	*/
1507	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1508	// Check if the URL is UpdraftPlus.
1509	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1510
1511	// Check if the variable $text is empty (null value included), otherwise assign $html.
1512	$content = empty($text) ? $html : esc_html($text);
1513
1514	// Check if $attrs is an array to convert the attributes into a string line.
1515	$str_attrs = '';
1516	if (is_array($attrs)) {
1517	foreach ($attrs as $attr => $value) {
1518	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1519	}
1520	} else {
1521	// If $attrs is empty, the `explode` function will only return an empty array.
1522	$attrs = explode('=', $attrs);
1523	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1524	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1525	}
1526
1527	// Check if it is necessary to add a target value if the url is external
1528	$is_external_url = $this->is_external_url($url);
1529	if ($is_external_url) {
1530	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1531	$str_attrs .= ' target="_blank"';
1532	}
1533
1534	$result = sprintf(
1535	'<a href="%s" %s>%s</a>',
1536	esc_url($url),
1537	$str_attrs,
1538	wp_kses_post($content)
1539	);
1540
1541	if ($return_instead_of_echo) return $result;
1542	echo wp_kses_post($result);
1543	}
1544
1545	/**
1546	* Check if a URL is external
1547	*
1548	* @param string $url
1549	* @return bool
1550	*/
1551	public function is_external_url($url) {
1552	if (empty($url)) {
1553	return false;
1554	}
1555
1556	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1557	$url = wp_parse_url($url, PHP_URL_HOST);
1558
1559	// Compare the domains and return true if they are different
1560	return $current_domain !== $url;
1561	}
1562
1563	/**
1564	* Get a URL with an eventual affiliate ID
1565	*
1566	* @param string $url
1567	* @return string
1568	*/
1569	public function maybe_add_affiliate_params($url) {
1570	// Check if the URL is UpdraftPlus.
1571	if (false !== strpos($url, '//updraftplus.com')) {
1572	// Set URL with Affiliate ID.
1573	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1574
1575	// Apply filters.
1576	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1577	}
1578	$filtered_url = apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1579	return is_string($filtered_url) ? $filtered_url : $url;
1580	}
1581
1582	/**
1583	* Setup WPO logger(s)
1584	*/
1585	public function setup_loggers() {
1586
1587	$logger = $this->get_logger();
1588	$loggers = $this->wpo_loggers();
1589
1590	if (!empty($loggers)) {
1591	foreach ($loggers as $_logger) {
1592	$logger->add_logger($_logger);
1593	}
1594	}
1595
1596	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1597	}
1598
1599	/**
1600	* Run logger actions after all optimizations done
1601	*/
1602	public function after_optimizations_logger_action() {
1603	$loggers = $this->get_logger()->get_loggers();
1604	if (!empty($loggers)) {
1605	foreach ($loggers as $logger) {
1606	if (is_a($logger, 'Updraft_Email_Logger')) {
1607	$logger->flush_log();
1608	}
1609	}
1610	}
1611	}
1612
1613	/**
1614	* Returns list of WPO loggers instances
1615	* Apply filter wp_optimize_loggers
1616	*
1617	* @return array
1618	*/
1619	public function wpo_loggers() {
1620
1621	$loggers = array();
1622	$loggers_classes_by_id = array();
1623	$options_keys = array();
1624
1625	$loggers_classes = $this->get_loggers_classes();
1626
1627	foreach ($loggers_classes as $logger_class => $source) {
1628	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1629	}
1630
1631	$options = $this->get_options();
1632
1633	$saved_loggers = $options->get_option('logging');
1634	$logger_additional_options = $options->get_option('logging-additional');
1635
1636	// create loggers classes instances.
1637	if (!empty($saved_loggers)) {
1638	// check for previous version options format.
1639	$keys = array_keys($saved_loggers);
1640
1641	// if options stored in old format then reformat it.
1642	if (false === is_numeric($keys[0])) {
1643	$_saved_loggers = array();
1644	foreach ($saved_loggers as $logger_id => $enabled) {
1645	if ($enabled) {
1646	$_saved_loggers[] = $logger_id;
1647	}
1648	}
1649
1650	// fill email with admin.
1651	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1652	$logger_additional_options['updraft_email_logger'] = array(
1653	get_option('admin_email')
1654	);
1655	}
1656
1657	$saved_loggers = $_saved_loggers;
1658	}
1659
1660	foreach ($saved_loggers as $i => $logger_id) {
1661
1662	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1663
1664	$logger_class = $loggers_classes_by_id[$logger_id];
1665
1666	$logger = new $logger_class();
1667
1668	$logger_options = $logger->get_options_list();
1669
1670	if (!empty($logger_options)) {
1671	foreach (array_keys($logger_options) as $option_name) {
1672	if (array_key_exists($option_name, $options_keys)) {
1673	$options_keys[$option_name]++;
1674	} else {
1675	$options_keys[$option_name] = 0;
1676	}
1677
1678	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1679
1680	// if options in old format then get correct value.
1681	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1682	$option_value = array_shift($logger_additional_options[$logger_id]);
1683	}
1684
1685	$logger->set_option($option_name, $option_value);
1686	}
1687	}
1688
1689	// check if logger is active.
1690	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1691
1692	if ($active) {
1693	$logger->enable();
1694	} else {
1695	$logger->disable();
1696	}
1697
1698	$loggers[] = $logger;
1699	}
1700	}
1701
1702	$filtered_loggers = apply_filters('wp_optimize_loggers', $loggers);
1703	return is_array($filtered_loggers) ? $filtered_loggers : $loggers;
1704	}
1705
1706	/**
1707	* Returns associative array with logger class name in a key and path to class file in a value.
1708	*
1709	* @return array
1710	*/
1711	public function get_loggers_classes() {
1712	$loggers_classes = array(
1713	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1714	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1715	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1716	);
1717
1718	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1719
1720	if (!empty($loggers_classes)) {
1721	foreach ($loggers_classes as $logger_class => $logger_file) {
1722	if (!class_exists($logger_class)) {
1723	if (is_file($logger_file)) {
1724	include_once($logger_file);
1725	}
1726	}
1727	}
1728	}
1729
1730	return $loggers_classes;
1731	}
1732
1733	/**
1734	* Returns information about all loggers classes.
1735	*
1736	* @return array
1737	*/
1738	public function get_loggers_classes_info() {
1739	$loggers_classes = $this->get_loggers_classes();
1740
1741	$loggers_classes_info = array();
1742
1743	if (!empty($loggers_classes)) {
1744	foreach (array_keys($loggers_classes) as $logger_class_name) {
1745
1746	if (!class_exists($logger_class_name)) continue;
1747
1748	$logger_id = strtolower($logger_class_name);
1749	$logger_class = new $logger_class_name();
1750
1751	$loggers_classes_info[$logger_id] = array(
1752	'description' => $logger_class->get_description(),
1753	'available' => $logger_class->is_available(),
1754	'allow_multiple' => $logger_class->is_allow_multiple(),
1755	'options' => $logger_class->get_options_list()
1756	);
1757	}
1758	}
1759
1760	return $loggers_classes_info;
1761	}
1762
1763	/**
1764	* Returns true if optimization works in multisite mode
1765	*
1766	* @return boolean
1767	*/
1768	public function is_multisite_mode() {
1769	return (is_multisite() && self::is_premium());
1770	}
1771
1772	/**
1773	* Returns true if the current user can run optimizations.
1774	*
1775	* @return bool
1776	*/
1777	public function can_run_optimizations(): bool {
1778	// we don't check permissions for cron jobs.
1779	if (defined('DOING_CRON') && DOING_CRON) return true;
1780
1781	if (self::is_premium() && false === user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1782	return true;
1783	}
1784
1785	/**
1786	* Returns true if current user can manage plugin options.
1787	*
1788	* @return bool
1789	*/
1790	public function can_manage_options() {
1791	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1792	return true;
1793	}
1794
1795	/**
1796	* Returns list of all sites in multisite
1797	*
1798	* @return array
1799	*/
1800	public function get_sites() {
1801	$sites = array();
1802	if (function_exists('get_sites')) {
1803	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1804	}
1805	return $sites;
1806	}
1807
1808	/**
1809	* Returns script memory limit in megabytes.
1810	*
1811	* @param string\|bool $memory_limit
1812	* @return int
1813	*/
1814	public function get_memory_limit($memory_limit = false) {
1815	// Returns in megabytes
1816	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1817	$memory_limit = rtrim($memory_limit);
1818
1819	return $this->return_bytes($memory_limit);
1820	}
1821
1822	/**
1823	* Returns free memory in bytes.
1824	*
1825	* @return int
1826	*/
1827	public function get_free_memory() {
1828	return $this->get_memory_limit() - memory_get_usage();
1829	}
1830
1831	/**
1832	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1833	*
1834	* @return int memory limit in bytes.
1835	*/
1836	public function get_script_memory_limit() {
1837	$memory_limit = $this->get_memory_limit();
1838
1839	if (defined('WP_MAX_MEMORY_LIMIT')) {
1840	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1841
1842	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1843	$memory_limit = $wp_memory_limit;
1844	}
1845	}
1846
1847	return $memory_limit;
1848	}
1849
1850	/**
1851	* Returns max packet size for database.
1852	*
1853	* @return int\|string
1854	*/
1855	public function get_max_packet_size() {
1856	global $wpdb;
1857	static $mp = 0;
1858
1859	if ($mp > 0) return $mp;
1860
1861	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1862	// Default to 1MB
1863	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1864	// 32MB
1865	if ($mp < 33554432) {
1866	$save = $wpdb->show_errors(false);
1867	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1868	$wpdb->show_errors($save);
1869
1870	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1871	// Default to 1MB
1872	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1873	}
1874
1875	return $mp;
1876	}
1877
1878	/**
1879	* Converts shorthand memory notation value to bytes.
1880	* From http://php.net/manual/en/function.ini-get.php
1881	*
1882	* @param string $val shorthand memory notation value.
1883	*
1884	* @return string
1885	*/
1886	public function return_bytes($val) {
1887	$val = trim($val);
1888	$last = strtolower($val[strlen($val)-1]);
1889	$val = (int) $val;
1890	switch ($last) {
1891	case 'g':
1892	$val *= 1024;
1893	// no break
1894	case 'm':
1895	$val *= 1024;
1896	// no break
1897	case 'k':
1898	$val *= 1024;
1899	}
1900
1901	return $val;
1902	}
1903
1904	/**
1905	* Log fatal errors to defined log destinations.
1906	*/
1907	public function log_fatal_errors() {
1908	$last_error = error_get_last();
1909
1910	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1911	$this->get_logger()->critical($last_error['message']);
1912	}
1913	}
1914
1915	/**
1916	* Close browser connection and continue script work. - Taken from UpdraftPlus
1917	*
1918	* @param string $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1919	* @return void
1920	*/
1921	public function close_browser_connection($txt = '') {
1922	if (!headers_sent()) {
1923	// Close browser connection so that it can resume AJAX polling
1924	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1925	header('Content-Type: application/json');
1926	header('Connection: close');
1927	header('Content-Encoding: none');
1928	}
1929
1930	if (session_id()) session_write_close();
1931	echo "\r\n\r\n";
1932	echo $txt; // phpcs:ignore WordPress.Security.EscapeOutput -- Output is already escaped
1933	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1934	$ob_level = ob_get_level();
1935	while ($ob_level > 0) {
1936	ob_end_flush();
1937	$ob_level--;
1938	}
1939	flush();
1940	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1941	if (function_exists('litespeed_finish_request')) litespeed_finish_request();
1942	}
1943
1944	/**
1945	* Try to change PHP script time limit.
1946	*/
1947	public function change_time_limit() {
1948	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1949
1950	// phpcs:disable
1951	// Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1952	// Squiz.PHP.DiscouragedFunctions.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1953	@set_time_limit($time_limit);
1954	// phpcs:enable
1955	}
1956
1957	/**
1958	* Does the request come from UDC
1959	*
1960	* @return boolean
1961	*/
1962	public function is_updraft_central_request() {
1963	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1964	}
1965
1966	/**
1967	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1968	*
1969	* @return boolean
1970	*/
1971	public function template_should_include_data() {
1972	/**
1973	* Filters whether data should be included in certain templates or not.
1974	*/
1975	return (bool) apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1976	}
1977
1978	/**
1979	* Load the templates for the modal window
1980	*/
1981	public function load_modal_template() {
1982	$this->include_template('modal.php');
1983	}
1984
1985	/**
1986	* Adds compress popup template
1987	*/
1988	public function add_smush_popup_template() {
1989	if (current_user_can($this->capability_required())) {
1990	$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
1991	$this->include_template('images/smush-popup.php', false, array('compression_server_hint' => $compression_server_hint));
1992	}
1993	}
1994
1995	/**
1996	* Delete transients and semaphores data from options table.
1997	*/
1998	public function delete_transients_and_semaphores() {
1999	global $wpdb;
2000
2001	$masks = array(
2002	'updraft_locked_wpo_%',
2003	'updraft_unlocked_wpo_%',
2004	'updraft_last_lock_time_wpo_%',
2005	'updraft_semaphore_wpo_%',
2006	'wpo_locked_%',
2007	'wpo_unlocked_%',
2008	'wpo_last_lock_time_%',
2009	'wpo_semaphore_%',
2010	'_transient_timeout_wpo_%',
2011	'_transient_wpo_%',
2012	'updraft_lock_wpo_%',
2013	'wpo_last_scheduled_%',
2014	);
2015
2016	$where_parts = array();
2017	foreach ($masks as $mask) {
2018	$where_parts[] = "(`option_name` LIKE '{$mask}')";
2019	}
2020
2021	$where_clause = implode(' OR ', $where_parts);
2022	$wpdb->query($wpdb->prepare("DELETE FROM `{$wpdb->options}` WHERE %s", $where_clause));
2023	}
2024
2025	/**
2026	* Prevents bots from indexing plugins list
2027	*
2028	* @param string $output
2029	* @return string
2030	*/
2031	public function robots_txt($output) {
2032	$upload_dir = wp_upload_dir();
2033	$path = wp_parse_url($upload_dir['baseurl']);
2034	$output .= "\nUser-agent: *";
2035	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo/wpo-plugins-tables-list.json\n";
2036	return $output;
2037	}
2038
2039	/**
2040	* Returns desired enqueue version string
2041	*
2042	* @return string Enqueue version as string
2043	*/
2044	public function get_enqueue_version() {
2045	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
2046	}
2047
2048	/**
2049	* Returns script suffix string
2050	*
2051	* @return string empty or `.min` suffix string
2052	*/
2053	public function get_min_or_not_string() {
2054	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
2055	}
2056
2057	/**
2058	* Returns script suffix string with WPO_VERSION
2059	*
2060	* @return string empty or min suffix with wpo_version string
2061	*/
2062	public function get_min_or_not_internal_string() {
2063	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
2064	}
2065
2066	/**
2067	* Instantiate Ajax handling class
2068	*/
2069	private function load_ajax_handler() {
2070	WPO_Ajax::get_instance();
2071	}
2072
2073	/**
2074	* Get instance of WP_Optimize_Table_Management
2075	*
2076	* @return WP_Optimize_Table_Management
2077	*/
2078	public function get_table_management() {
2079	return WP_Optimize_Table_Management::get_instance();
2080	}
2081
2082	/**
2083	* Get instance of WP_Optimize_404_Detector
2084	*
2085	* @return WP_Optimize_404_Detector
2086	*/
2087	public function get_404_detector() {
2088	return WP_Optimize_404_Detector::get_instance();
2089	}
2090
2091	/**
2092	* Returns the message used to notify the user that the PHP version or WordPress version doesn't meet the requirements.
2093	*
2094	* @return string
2095	*/
2096	public function get_minimum_requirements_notice_message() {
2097	// translators: %1$s is minimum required PHP version, %2$s is minimum required WordPress version
2098	return sprintf(esc_html__('WP-Optimize requires a minimum PHP version of %1$s and WordPress version of %2$s or higher', 'wp-optimize'), esc_html(WPO_REQUIRED_PHP_VERSION), esc_html(WPO_REQUIRED_WP_VERSION));
2099	}
2100
2101	/**
2102	* Output notice when PHP version or WordPress version is not meet for WP-Optimize.
2103	*
2104	* @return void
2105	*/
2106	public function output_minimum_requirements_notice() {
2107	?>
2108	<div class="notice notice-error is-dismissible">
2109	<p><?php echo $this->get_minimum_requirements_notice_message(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Output is already escaped ?></p>
2110	</div>
2111	<?php
2112	}
2113	}
2114
2115	/**
2116	* Unschedule specific tasks:
2117	* `wpo_cron_event2` => DB optimizations
2118	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
2119	*
2120	* @return void
2121	*/
2122	function wpo_cron_deactivate() {
2123	WP_Optimize()->log('running wpo_cron_deactivate()');
2124	wp_clear_scheduled_hook('wpo_cron_event2');
2125	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
2126	}
2127
2128	function WP_Optimize() {
2129	return WP_Optimize::instance();
2130	}
2131
2132	endif;
2133
2134	$GLOBALS['wp_optimize'] = WP_Optimize();
2135