wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.3.0, at wp-optimize.php

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1	<?php
2	/**
3	Plugin Name: WP-Optimize - Clean, Compress, Cache
4	Plugin URI: https://getwpo.com
5	Description: WP-Optimize makes your site fast and efficient. It cleans the database, compresses images and caches pages. Fast sites attract more traffic and users.
6	Version: 3.3.0
7	Update URI: https://wordpress.org/plugins/wp-optimize/
8	Author: David Anderson, Ruhani Rabin, Team Updraft
9	Author URI: https://updraftplus.com
10	Text Domain: wp-optimize
11	Domain Path: /languages
12	License: GPLv2 or later
13	*/
14
15	if (!defined('ABSPATH')) die('No direct access allowed');
16
17	// Check to make sure if WP_Optimize is already call and returns.
18	if (!class_exists('WP_Optimize')) :
19	define('WPO_VERSION', '3.3.0');
20	define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
21	define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
22	define('WPO_PLUGIN_SLUG', plugin_basename(__FILE__));
23	define('WPO_PREMIUM_NOTIFICATION', false);
24	define('WPO_MINIFY_PHP_VERSION_MET', version_compare(PHP_VERSION, '5.4', '>=') ? true : false);
25	if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true);
26
27	class WP_Optimize {
28
29	public $premium_version_link = 'https://getwpo.com/buy/';
30
31	private $template_directories;
32
33	protected static $_instance = null;
34
35	protected $_cache_init_status = null;
36
37	/**
38	* Class constructor
39	*/
40	public function __construct() {
41	spl_autoload_register(array($this, 'loader'));
42
43	// Checks if premium is installed along with plugins needed.
44	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
45
46	register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
47	register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
48	register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
49
50	$this->load_admin();
51	add_action('admin_init', array($this, 'admin_init'));
52	add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);
53
54	add_action('init', array($this, 'schedule_plugin_cron_tasks'));
55
56	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
57	add_action('wpo_cron_event2', array($this, 'cron_action'));
58	add_filter('cron_schedules', array($this, 'cron_schedules'));
59
60	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
61
62	if (!self::is_premium()) {
63	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
64	}
65
66	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
67
68	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
69
70	$this->load_ajax_handler();
71
72	// Show update to Premium notice for non-premium multisite.
73	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
74
75	// Action column (show repair button if need).
76	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
77
78	/**
79	* Add action for display Images > Compress images tab.
80	*/
81	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
82
83	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
84
85	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
86
87	register_shutdown_function(array($this, 'log_fatal_errors'));
88
89	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
90
91	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
92
93	$import_done_hooks = array(
94	'import_end', // wordpress importer
95	'pmxi_after_xml_import', // wp all import
96	);
97
98	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
99
100	foreach ($db_update_hooks as $hook) {
101	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
102	}
103	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
104	}
105
106	/**
107	* Auto-loads classes.
108	*
109	* @param string $class_name The name of the class.
110	*/
111	private function loader($class_name) {
112	$dirs = $this->get_class_directories();
113
114	foreach ($dirs as $dir) {
115	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
116	if (file_exists($class_file)) {
117	require_once($class_file);
118	return;
119	}
120	}
121	}
122
123	/**
124	* Returns an array of class directories
125	*
126	* @return array
127	*/
128	private function get_class_directories() {
129	return array(
130	'cache',
131	'compatibility',
132	'includes',
133	'minify',
134	'optimizations',
135	'webp',
136	);
137	}
138
139	/**
140	* Initialize Admin class to load admin UI
141	*/
142	private function load_admin() {
143	$this->get_admin_instance();
144	}
145
146	/**
147	* Returns Admin class instance
148	*
149	* @return WP_Optimize_Admin
150	*/
151	public function get_admin_instance() {
152	return WP_Optimize_Admin::instance();
153	}
154
155	/**
156	* Detect when an active plugin or theme is updated, and trigger an action
157	*
158	* @param object $upgrader_object
159	* @param array $options
160	* @return void
161	*/
162	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
163	if (empty($options) \|\| !isset($options['type'])) return;
164
165	$should_purge_cache = false;
166	$skin = $upgrader_object->skin;
167	if ('plugin' === $options['type']) {
168	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
169	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
170	$should_purge_cache = true;
171	}
172	} elseif ('theme' === $options['type']) {
173	$active_theme = get_stylesheet();
174	$parent_theme = get_template();
175	// A theme is updated using the upload system
176	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
177	$updated_theme = $upgrader_object->result['destination_name'];
178	// Check if the theme is in use
179	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
180	$should_purge_cache = true;
181	}
182	// A theme is updated using the classic update system
183	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
184	// Check if the theme is in use
185	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
186	$should_purge_cache = true;
187	}
188	}
189	}
190
191	/**
192	* Action executed when an active theme or plugin was updated
193	*/
194	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
195
196	}
197
198	/**
199	* Sets a flag to indicate an import action is done, if needed
200	*/
201	public function maybe_schedule_update_record_count_event() {
202	if (!wp_next_scheduled('wpo_update_record_count_event')) {
203	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
204	}
205	}
206
207	public function admin_page_wpo_images_smush() {
208	$options = Updraft_Smush_Manager()->get_smush_options();
209	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
210	$sites = WP_Optimize()->get_sites();
211	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion()));
212	}
213
214	public static function instance() {
215	if (empty(self::$_instance)) {
216	self::$_instance = new self();
217	}
218	return self::$_instance;
219	}
220
221	public function get_optimizer() {
222	return WP_Optimizer::instance();
223	}
224
225	/**
226	* Adds 3rd party plugin compatibilities.
227	*/
228	public function load_compatibilities() {
229	WPO_Polylang_Compatibility::instance();
230	WPO_Page_Builder_Compatibility::instance();
231	WPO_Custom_Permalink_Compatibility::instance();
232	WPO_TranslatePress_Compatibility::instance();
233
234	do_action('wpo_load_compatibilities');
235	}
236
237	/**
238	* Get and instantiate WP_Optimize_Minify
239	*
240	* @return WP_Optimize_Minify
241	*/
242	public function get_minify() {
243	return WP_Optimize_Minify::instance();
244	}
245
246	public function get_options() {
247	return WP_Optimize_Options::instance();
248	}
249
250	public function get_notices() {
251	return WP_Optimize_Notices::instance();
252	}
253
254	/**
255	* Returns instance if WPO_Page_Cache class.
256	*
257	* @return WPO_Page_Cache
258	*/
259	public function get_page_cache() {
260	return WPO_Page_Cache::instance();
261	}
262
263	/**
264	* Returns instance if WP_Optimize_WebP class.
265	*
266	* @return WP_Optimize_WebP
267	*/
268	public function get_webp_instance() {
269	return WP_Optimize_WebP::get_instance();
270	}
271
272	/**
273	* Detects if the platform is Kinsta or not
274	*
275	* @return bool Returns true if it is Kinsta platform, otherwise returns false
276	*/
277	private function is_kinsta() {
278	return isset($_SERVER['KINSTA_CACHE_ZONE']);
279	}
280
281	/**
282	* Detects whether the server handles cache. eg. Nginx cache
283	*/
284	public function does_server_handles_cache() {
285	return $this->is_kinsta();
286	}
287
288	/**
289	* Detects whether the server supports table optimization.
290	*
291	* Some servers prevent table optimization
292	* because InnoDB engine does not optimize table
293	* instead it drops tables and recreate them
294	* which results in elevated disk write operations
295	*/
296	public function does_server_allows_table_optimization() {
297	return !$this->is_kinsta();
298	}
299
300	/**
301	* Detects whether the server supports local webp conversion tools
302	*/
303	private function does_server_allows_local_webp_conversion() {
304	return !$this->is_kinsta();
305	}
306
307	/**
308	* Create instance of WP_Optimize_Browser_Cache.
309	*
310	* @return WP_Optimize_Browser_Cache
311	*/
312	public function get_browser_cache() {
313	return WP_Optimize_Browser_Cache::instance();
314	}
315
316	/**
317	* Returns WP_Optimize_Database_Information instance.
318	*
319	* @return WP_Optimize_Database_Information
320	*/
321	public function get_db_info() {
322	return WP_Optimize_Database_Information::instance();
323	}
324
325	/**
326	* Returns instance of WP_Optimize_Gzip_Compression.
327	*
328	* @return WP_Optimize_Gzip_Compression
329	*/
330	public function get_gzip_compression() {
331	return WP_Optimize_Gzip_Compression::instance();
332	}
333
334	/**
335	* Create instance of WP_Optimize_Htaccess.
336	*
337	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
338	* @return WP_Optimize_Htaccess
339	*/
340	public static function get_htaccess($htaccess_file = '') {
341	return new WP_Optimize_Htaccess($htaccess_file);
342	}
343
344	/**
345	* Return instance of Updraft_Logger
346	*
347	* @return Updraft_Logger
348	*/
349	public function get_logger() {
350	return Updraft_Logger::instance();
351	}
352
353	/**
354	* Check if the current page belongs to WP-Optimize.
355	*
356	* @return bool
357	*/
358	public function is_wpo_page() {
359	$current_screen = get_current_screen();
360
361	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
362	}
363
364	/**
365	* Enqueue scripts and styles on WP-Optimize pages.
366	*/
367	public function admin_enqueue_scripts() {
368	$enqueue_version = $this->get_enqueue_version();
369	$min_or_not = $this->get_min_or_not_string();
370	$min_or_not_internal = $this->get_min_or_not_internal_string();
371
372	// Register or enqueue common scripts
373	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
374	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
375	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
376
377	// load scripts and styles only on WP-Optimize pages.
378	if (!$this->is_wpo_page()) return;
379
380	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
381
382	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
383	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
384	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js'), $enqueue_version);
385	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js'), $enqueue_version);
386	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
387	// Using tablesorter to help with organising the DB size on Table Information
388	// https://github.com/Mottie/tablesorter
389	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
390
391	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
392
393	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
394
395	$js_variables = $this->wpo_js_translations();
396	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
397
398	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
399
400	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
401	}
402
403	/**
404	* Enqueue any required front-end scripts
405	*
406	* @return void
407	*/
408	public function frontend_enqueue_scripts() {
409	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
410	$enqueue_version = $this->get_enqueue_version();
411	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
412
413	// Register or enqueue common scripts
414	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
415	}
416
417	/**
418	* Load Task Manager
419	*/
420	public function get_task_manager() {
421	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
422
423	Updraft_Tasks_Activation::check_updates();
424
425	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
426	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
427	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
428
429	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
430	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
431
432	return Updraft_Smush_Manager();
433	}
434
435	/**
436	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
437	*
438	* @returns Boolean
439	*/
440	public static function is_premium() {
441	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
442	$wp_optimize_premium = WP_Optimize_Premium();
443	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
444	}
445	return false;
446	}
447
448	/**
449	* 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.
450	*
451	* @return bool
452	*/
453	public function is_apache_server() {
454	global $is_apache;
455	return $is_apache;
456	}
457
458	/**
459	* Check if script running on IIS web server.
460	*
461	* @return bool
462	*/
463	public function is_IIS_server() {
464	global $is_IIS, $is_iis7;
465	return $is_IIS \|\| $is_iis7;
466	}
467
468	/**
469	* Check if Apache module or modules active.
470	*
471	* @param string\|array $module - single Apache module name or list of Apache module names.
472	*
473	* @return bool\|null - if null, the result was indeterminate
474	*/
475	public function is_apache_module_loaded($module) {
476	if (!$this->is_apache_server()) return false;
477
478	if (!function_exists('apache_get_modules')) return null;
479
480	$module_loaded = true;
481
482	if (is_array($module)) {
483	foreach ($module as $single_module) {
484	if (!in_array($single_module, apache_get_modules())) {
485	$module_loaded = false;
486	break;
487	}
488	}
489	} else {
490	$module_loaded = in_array($module, apache_get_modules());
491	}
492
493	return $module_loaded;
494	}
495
496	/**
497	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
498	*/
499	public function plugins_loaded() {
500
501	if ($this->does_server_handles_cache()) {
502	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
503
504	// If newly migrated to server that handles cache, disable wpo cache
505	$cache = $this->get_page_cache();
506	if ($cache->is_enabled()) {
507	$cache->disable();
508	}
509	}
510
511	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
512
513	// Run Premium loader if it exists
514	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
515	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
516	}
517
518	// load defaults
519	WP_Optimize()->get_options()->set_default_options();
520
521	// Initialize loggers.
522	$this->setup_loggers();
523
524	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
525	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
526	deactivate_plugins($free_plugin);
527
528	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
529	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
530	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
531
532	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
533	file_put_contents($advanced_cache_filename, '');
534	}
535	}
536
537	// Registers the notice letting the user know it cannot be active if premium is active.
538	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
539	return;
540	}
541
542	// Loads the task manager
543	$this->get_task_manager();
544
545	// Loads the language file.
546	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
547
548	// Load 3rd party plugin compatibilities.
549	$this->load_compatibilities();
550
551	// Load page cache.
552	$this->get_page_cache();
553	$this->init_page_cache();
554
555	// Include minify
556	$this->get_minify();
557	$this->run_updates();
558
559	// We need this here because webp can be unavailable because of server moves
560	// This deletes already converted webp images and original image file when a media is deleted
561	WP_Optimize_WebP_Images::get_instance();
562
563	// Include WebP
564	if (WP_Optimize_WebP::is_shell_functions_available() && WPO_USE_WEBP_CONVERSION) {
565	$this->get_webp_instance();
566	}
567
568	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
569	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
570	}
571
572	/**
573	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
574	* (e.g. "central" folder)
575	*
576	* @param array $hosts List of plugins having the "central" library integrated into them
577	*
578	* @return array
579	*/
580	public function attach_updraftcentral_host($hosts) {
581	$hosts[] = 'wp-optimize';
582	return $hosts;
583	}
584
585	/**
586	* Filter cache tabs (when it is Kinsta)
587	*
588	* @param array $tabs An array of tabs
589	*
590	* @return array $tabs An array of tabs
591	*/
592	public function filter_cache_tabs($tabs) {
593	unset($tabs['preload']);
594	unset($tabs['advanced']);
595	unset($tabs['gzip']);
596	unset($tabs['settings']);
597	return $tabs;
598	}
599
600	/**
601	* Check whether one of free/Premium is active (whether it is this instance or not)
602	*
603	* @param String $which - 'free' or 'premium'
604	*
605	* @return String\|Boolean - plugin path (if installed) or false if not
606	*/
607	private function is_active($which = 'free') {
608	$active_plugins = $this->get_active_plugins();
609	foreach ($active_plugins as $file) {
610	if ('wp-optimize.php' == basename($file)) {
611	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
612	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
613	}
614	}
615	return false;
616	}
617
618	/**
619	* Gets an array of plugins active on either the current site, or site-wide
620	*
621	* @return Array - a list of plugin paths (relative to the plugin directory)
622	*/
623	private function get_active_plugins() {
624
625	// Gets all active plugins on the current site
626	$active_plugins = get_option('active_plugins');
627
628	if (is_multisite()) {
629	$network_active_plugins = get_site_option('active_sitewide_plugins');
630	if (!empty($network_active_plugins)) {
631	$network_active_plugins = array_keys($network_active_plugins);
632	$active_plugins = array_merge($active_plugins, $network_active_plugins);
633	}
634	}
635
636	return $active_plugins;
637	}
638
639	/**
640	* This function checks whether a specific plugin is installed, and returns information about it
641	*
642	* @param string $name Specify "Plugin Name" to return details about it.
643	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
644	*/
645	public function is_installed($name) {
646
647	// Needed to have the 'get_plugins()' function
648	include_once(ABSPATH.'wp-admin/includes/plugin.php');
649
650	// Gets all plugins available
651	$get_plugins = get_plugins();
652
653	$active_plugins = $this->get_active_plugins();
654
655	$plugin_info = array();
656	$plugin_info['installed'] = false;
657	$plugin_info['active'] = false;
658
659	// Loops around each plugin available.
660	foreach ($get_plugins as $key => $value) {
661	// If the plugin name matches that of the specified name, it will gather details.
662	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
663	$plugin_info['installed'] = true;
664	$plugin_info['name'] = $key;
665	$plugin_info['version'] = $value['Version'];
666	if (in_array($key, $active_plugins)) {
667	$plugin_info['active'] = true;
668	}
669	break;
670	}
671	return $plugin_info;
672	}
673
674	/**
675	* This is a notice to show users that premium is installed
676	*/
677	public function show_admin_notice_premium() {
678	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
679	if (isset($_GET['activate'])) unset($_GET['activate']);
680	}
681
682	/**
683	* Show update to Premium notice for non-premium multisite.
684	*/
685	public function show_multisite_update_to_premium_notice() {
686	if (!is_multisite() \|\| self::is_premium()) return;
687
688	echo '<p><a href="'.$this->premium_version_link.'">'.__('New feature: WP-Optimize Premium can now optimize all sites within a multisite install, not just the main one.', 'wp-optimize').'</a></p>';
689	}
690
691	public function admin_init() {
692	$pagenow = $GLOBALS['pagenow'];
693
694	$this->register_template_directories();
695
696	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
697	$options = $this->get_options();
698
699	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
700
701	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
702	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
703	$installed_for = (time() - $installed);
704	}
705
706	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
707	add_action('all_admin_notices', array($this, 'show_admin_notice_upgradead'));
708	}
709	}
710
711	if ($this->is_wp_smush_installed()) {
712	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
713	}
714	}
715
716	/**
717	* Checks whether the WP Smush plugin is active or not
718	*
719	* @return bool
720	*/
721	private function is_wp_smush_installed() {
722	return is_plugin_active('wp-smushit/wp-smush.php');
723	}
724
725	/**
726	* Remove WPO plugin name from WP Smushit transient value
727	*
728	* @return array $active_plugins
729	*/
730	public function modify_wp_smush_conflict_check($active_plugins) {
731	// This can be boolean value since it is return value of get_transient
732	if (!is_array($active_plugins)) return $active_plugins;
733
734	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
735	unset($active_plugins[$key]);
736	}
737	return $active_plugins;
738	}
739
740	/**
741	* Get the install or update notice instance
742	*
743	* @return WP_Optimize_Install_Or_Update_Notice
744	*/
745	public function get_install_or_update_notice() {
746	static $instance = null;
747	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
748	$instance = new WP_Optimize_Install_Or_Update_Notice();
749	return $instance;
750	}
751
752	public function show_admin_notice_upgradead() {
753	$this->include_template('notices/thanks-for-using-main-dash.php');
754	}
755
756	public function capability_required() {
757	return apply_filters('wp_optimize_capability_required', 'manage_options');
758	}
759
760	/**
761	* Returns array of translations used in javascript code.
762	*
763	* @return array
764	*/
765	public function wpo_js_translations() {
766	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
767	return apply_filters('wpo_js_translations', array(
768	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
769	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
770	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
771	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
772	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
773	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
774	'table_optimization_timeout' => 120000,
775	'add' => __('Add', 'wp-optimize'),
776	'cancel' => __('Cancel', 'wp-optimize'),
777	'cancelling' => __('Cancelling...', 'wp-optimize'),
778	'enable' => __('Enable', 'wp-optimize'),
779	'disable' => __('Disable', 'wp-optimize'),
780	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
781	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
782	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
783	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
784	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
785	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
786	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
787	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
788	'update' => __('Update', 'wp-optimize'),
789	'run_now' => __('Run now', 'wp-optimize'),
790	'starting_preload' => __('Started preload...', 'wp-optimize'),
791	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
792	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
793	'number_of_files' => __('Number of files:', 'wp-optimize'),
794	'toggle_info' => __('Show information', 'wp-optimize'),
795	'delete_file' => __('Delete', 'wp-optimize'),
796	'added_to_list' => __('Added to the list', 'wp-optimize'),
797	'added_notice' => __('The file was added to the list', 'wp-optimize'),
798	'save_notice' => __('Save the changes', 'wp-optimize'),
799	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
800	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
801	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
802	'loading_data' => __('Loading data...', 'wp-optimize'),
803	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
804	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
805	'sites' => $this->get_sites(),
806	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
807	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
808	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
809	'network_site_url' => network_site_url(),
810	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
811	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
812	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
813	'importing' => __('Importing...', 'wp-optimize'),
814	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
815	'exported_on' => __('Which was exported on:', 'wp-optimize'),
816	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
817	'select_destination' => __('Select destination', 'wp-optimize'),
818	));
819	}
820
821	/**
822	* Manages the admin bar menu for caching (currently page and minify)
823	*/
824	public function cache_admin_bar($wp_admin_bar) {
825
826	$options = $this->get_options();
827	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
828
829	/**
830	* The "purge cache" menu items
831	*
832	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
833	* @param object $wp_admin_bar
834	*/
835	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
836
837	if (empty($menu_items) \|\| !is_array($menu_items)) return;
838
839	$wp_admin_bar->add_menu(array(
840	'id' => 'wpo_purge_cache',
841	'title' => __('Purge cache', 'wp-optimize'),
842	'href' => '#',
843	'meta' => array(
844	'title' => __('Purge cache', 'wp-optimize'),
845	),
846	'parent' => false,
847	));
848
849	foreach ($menu_items as $item) {
850	$wp_admin_bar->add_menu($item);
851	}
852	}
853
854	/**
855	* Add settings link on plugin page
856	*
857	* @param string $links Passing through the URL to be used within the HREF.
858	* @return string Returns the Links.
859	*/
860	public function plugin_settings_link($links) {
861
862	$admin_page_url = $this->get_options()->admin_page_url();
863	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
864
865	if (false == self::is_premium()) {
866	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
867	array_unshift($links, $premium_link);
868	}
869
870	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
871	array_unshift($links, $settings_link);
872
873	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
874	array_unshift($links, $optimize_link);
875	return $links;
876	}
877
878	/**
879	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
880	*
881	* @param string $content String for output to column
882	* @param object $table_info Object with table info.
883	*
884	* @return string
885	*/
886	public function tables_list_additional_column_data($content, $table_info) {
887	if ($table_info->is_needing_repair) {
888	$content .= '<div class="wpo_button_wrap">'
889	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
890	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
891	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
892	. '</div>';
893	}
894
895	// table belongs to plugin.
896	if ($table_info->can_be_removed) {
897	$content .= '<div>'
898	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
899	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
900	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
901	. '</div>';
902	}
903
904	// Add option for MyISAM to InnoDB conversion.
905	if ('MyISAM' == $table_info->Engine) {
906	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
907	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
908	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
909	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
910	. '</div>';
911
912	}
913
914	return $content;
915	}
916
917	/**
918	* Initialize WP-Optimize page cache.
919	*/
920	public function init_page_cache() {
921	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
922	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
923	$this->_cache_init_status = $this->get_page_cache()->enable();
924	}
925	}
926	}
927
928	/**
929	* Get init_page_cache() status.
930	*
931	* @return bool
932	*/
933	public function get_init_page_cache_status() {
934	return $this->_cache_init_status;
935	}
936
937	/**
938	* Schedules cron event based on selected schedule type
939	*
940	* @return void
941	*/
942	public function cron_activate() {
943	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
944
945	$options = $this->get_options();
946
947	if ($options->get_option('schedule') === false) {
948	$options->set_default_options();
949	} else {
950	if ('true' == $options->get_option('schedule')) {
951	if (!wp_next_scheduled('wpo_cron_event2')) {
952	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
953
954	// Backward compatibility
955	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
956
957	$this_time = (86400 * 7);
958
959	switch ($schedule_type) {
960	case "wpo_daily":
961	$this_time = 86400;
962	break;
963
964	case "wpo_weekly":
965	$this_time = (86400 * 7);
966	break;
967
968	case "wpo_fortnightly":
969	$this_time = (86400 * 14);
970	break;
971
972	case "wpo_monthly":
973	$this_time = (86400 * 30);
974	break;
975	}
976
977	add_action('wpo_cron_event2', array($this, 'cron_action'));
978	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
979	WP_Optimize()->log('running wp_schedule_event()');
980	if (is_wp_error($result)) {
981	$error_msg = $result->get_error_message();
982	WP_Optimize()->log($error_msg);
983	WP_Optimize()->log(print_r($result, true));
984	} else {
985	WP_Optimize()->log($result);
986	}
987	}
988	}
989	}
990	}
991
992	/**
993	* Clears all cron events
994	*
995	* @return void
996	*/
997	public function wpo_cron_deactivate() {
998	$cron_jobs = _get_cron_array();
999	foreach ($cron_jobs as $job) {
1000	foreach (array_keys($job) as $hook) {
1001	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1002	}
1003	}
1004	}
1005
1006	/**
1007	* Scheduler public functions to update schedulers
1008	*
1009	* @param array $schedules An array of schedules being passed.
1010	* @return array An array of schedules being returned.
1011	*/
1012	public function cron_schedules($schedules) {
1013	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1014	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1015	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1016	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1017	return $schedules;
1018	}
1019
1020	/**
1021	* Returns count of overdue cron jobs.
1022	*
1023	* @return integer
1024	*/
1025	public function howmany_overdue_crons() {
1026	$how_many_overdue = 0;
1027	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1028	$crons = _get_cron_array();
1029	if (is_array($crons)) {
1030	$timenow = time();
1031	foreach ($crons as $jt => $job) {
1032	if ($jt < $timenow) {
1033	$how_many_overdue++;
1034	}
1035	}
1036	}
1037	}
1038	return $how_many_overdue;
1039	}
1040
1041	/**
1042	* Run updates on plugin activation.
1043	*/
1044	public function run_updates() {
1045	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1046	WP_Optimize_Updates::check_updates();
1047	}
1048
1049	/**
1050	* Returns warning about overdue crons.
1051	*
1052	* @param int $howmany count of overdue crons
1053	* @return string
1054	*/
1055	public function show_admin_warning_overdue_crons($howmany) {
1056	$ret = '<div class="updated below-h2"><p>';
1057	$ret .= '<strong>'.__('Warning', 'wp-optimize').':</strong> '.sprintf(__('WordPress has a number (%d) of scheduled tasks which are overdue.', 'wp-optimize'), $howmany).' '. __('Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize').' <a href="'.apply_filters('wpoptimize_com_link', "https://getwpo.com/faqs/the-scheduler-in-my-wordpress-installation-is-not-working-what-should-i-do/").'">'.__('Read this page for a guide to possible causes and how to fix it.', 'wp-optimize').'</a>';
1058	$ret .= '</p></div>';
1059	return $ret;
1060	}
1061
1062	private function wp_normalize_path($path) {
1063	// Wp_normalize_path is not present before WP 3.9.
1064	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1065	// Taken from WP 4.6.
1066	$path = str_replace('\\', '/', $path);
1067	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1068	if (':' === substr($path, 1, 1)) {
1069	$path = ucfirst($path);
1070	}
1071	return $path;
1072	}
1073
1074	public function get_templates_dir() {
1075	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1076	}
1077
1078	public function get_templates_url() {
1079	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1080	}
1081
1082	/**
1083	* Return or output view content
1084	*
1085	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1086	* @param Boolean $return_instead_of_echo - what to do with the results
1087	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1088	*
1089	* @return String\|Void
1090	*/
1091	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1092	if ($return_instead_of_echo) ob_start();
1093
1094	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1095	$prefix = $matches[1];
1096	$suffix = $matches[2];
1097	if (isset($this->template_directories[$prefix])) {
1098	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1099	}
1100	}
1101
1102	if (!isset($template_file)) {
1103	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1104	}
1105
1106	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1107
1108	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1109
1110	if (!file_exists($template_file)) {
1111	error_log("WP Optimize: template not found: ".$template_file);
1112	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1113	} else {
1114	extract($extract_these);
1115	// The following are useful variables which can be used in the template.
1116	// They appear as unused, but may be used in the $template_file.
1117	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1118	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1119	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1120	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1121	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1122	include $template_file;
1123	}
1124
1125	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1126
1127	if ($return_instead_of_echo) return ob_get_clean();
1128	}
1129
1130	/**
1131	* Build a list of template directories (stored in self::$template_directories)
1132	*/
1133	private function register_template_directories() {
1134
1135	$template_directories = array();
1136
1137	$templates_dir = $this->get_templates_dir();
1138
1139	if ($dh = opendir($templates_dir)) {
1140	while (($file = readdir($dh)) !== false) {
1141	if ('.' == $file \|\| '..' == $file) continue;
1142	if (is_dir($templates_dir.'/'.$file)) {
1143	$template_directories[$file] = $templates_dir.'/'.$file;
1144	}
1145	}
1146	closedir($dh);
1147	}
1148
1149	// Optimal hook for most extensions to hook into.
1150	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1151
1152	}
1153
1154	/**
1155	* Message to debug
1156	*
1157	* @param string $message Message to insert into the log.
1158	* @param array $context array with variables used in $message like in template,
1159	* for ex.
1160	* $message = 'Hello {message}';
1161	* $context = ['message' => 'world']
1162	* 'Hello world' string will be saved in log.
1163	*/
1164	public function log($message, $context = array()) {
1165	$this->get_logger()->debug($message, $context);
1166	}
1167
1168	/**
1169	* Format Bytes Into KB/MB
1170	*
1171	* @param mixed $bytes Number of bytes to be converted.
1172	* @param integer $decimals the number of decimal digits
1173	* @return integer return the correct format size.
1174	*/
1175	public function format_size($bytes, $decimals = 2) {
1176	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1177
1178	if (1073741824 <= $bytes) {
1179	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1180	} elseif (1048576 <= $bytes) {
1181	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1182	} elseif (1024 <= $bytes) {
1183	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1184	} elseif (1 < $bytes) {
1185	$bytes = $bytes . ' bytes';
1186	} elseif (1 == $bytes) {
1187	$bytes = $bytes . ' byte';
1188	} else {
1189	$bytes = '0 bytes';
1190	}
1191
1192	return $bytes;
1193	}
1194
1195	/**
1196	* Format a timestamp into a juman readable date time
1197	*
1198	* @param int $timestamp
1199	* @return string
1200	*/
1201	public function format_date_time($timestamp) {
1202	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1203	}
1204
1205	/**
1206	* Executed this function on cron event.
1207	*
1208	* @return void
1209	*/
1210	public function cron_action() {
1211
1212	$optimizer = $this->get_optimizer();
1213	$options = $this->get_options();
1214
1215	$this->log('WPO: Starting cron_action()');
1216	$options->update_option('last-optimized', time());
1217	if ('true' == $options->get_option('schedule')) {
1218	$this_options = $options->get_option('auto');
1219
1220	// Currently the output of the optimizations is not saved/used/logged.
1221	$optimizer->do_optimizations($this_options, 'auto');
1222	}
1223
1224	}
1225
1226	/**
1227	* Schedule cron tasks used by plugin.
1228	*
1229	* @return void
1230	*/
1231	public function schedule_plugin_cron_tasks() {
1232	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1233	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1234	}
1235
1236	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1237	}
1238
1239	/**
1240	* Do plugin background tasks.
1241	*
1242	* @return void
1243	*/
1244	public function do_weekly_cron_tasks() {
1245	// add tasks here.
1246	$this->get_db_info()->update_plugin_json();
1247	}
1248
1249	/**
1250	* This will customize a URL with a correct Affiliate link
1251	* This function can be update to suit any URL as longs as the URL is passed
1252	*
1253	* @param String $url - URL to be check to see if it an updraftplus match.
1254	* @param String $text - Text to be entered within the href a tags.
1255	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1256	* @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"').
1257	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1258	* @return String\|void
1259	*/
1260	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1261	// Check if the URL is UpdraftPlus.
1262	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1263
1264	// Check if the variable $text is empty (null value included), otherwise assign $html.
1265	$content = empty($text) ? $html : esc_html($text);
1266
1267	// Check if $attrs is an array to convert the attributes into a string line.
1268	$str_attrs = '';
1269	if (is_array($attrs)) {
1270	foreach ($attrs as $attr => $value) {
1271	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1272	}
1273	} else {
1274	// If $attrs is empty, the explode function will only return an empty array.
1275	$attrs = explode('=', $attrs);
1276	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1277	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1278	}
1279
1280	// Check if it is necessary to add a target value if the url is external
1281	$is_external_url = $this->is_external_url($url);
1282	if ($is_external_url) {
1283	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1284	$str_attrs .= ' target="_blank"';
1285	}
1286
1287	$result = sprintf(
1288	'<a href="%s" %s>%s</a>',
1289	esc_url($url),
1290	$str_attrs,
1291	$content
1292	);
1293
1294	if ($return_instead_of_echo) return $result;
1295	echo $result;
1296	}
1297
1298	/**
1299	* Check if a URL is external
1300	*
1301	* @param string $url
1302	* @return string
1303	*/
1304	public function is_external_url($url) {
1305	if (empty($url)) {
1306	return false;
1307	}
1308
1309	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1310	$url = wp_parse_url($url, PHP_URL_HOST);
1311
1312	// Compare the domains and return true if they are different
1313	return $current_domain !== $url;
1314	}
1315
1316	/**
1317	* Get an URL with an eventual affiliate ID
1318	*
1319	* @param string $url
1320	* @return string
1321	*/
1322	public function maybe_add_affiliate_params($url) {
1323	// Check if the URL is UpdraftPlus.
1324	if (false !== strpos($url, '//updraftplus.com')) {
1325	// Set URL with Affiliate ID.
1326	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1327
1328	// Apply filters.
1329	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1330	}
1331	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1332	}
1333
1334	/**
1335	* Setup WPO logger(s)
1336	*/
1337	public function setup_loggers() {
1338
1339	$logger = $this->get_logger();
1340	$loggers = $this->wpo_loggers();
1341
1342	if (!empty($loggers)) {
1343	foreach ($loggers as $_logger) {
1344	$logger->add_logger($_logger);
1345	}
1346	}
1347
1348	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1349	}
1350
1351	/**
1352	* Run logger actions after all optimizations done
1353	*/
1354	public function after_optimizations_logger_action() {
1355	$loggers = $this->get_logger()->get_loggers();
1356	if (!empty($loggers)) {
1357	foreach ($loggers as $logger) {
1358	if (is_a($logger, 'Updraft_Email_Logger')) {
1359	$logger->flush_log();
1360	}
1361	}
1362	}
1363	}
1364
1365	/**
1366	* Returns list of WPO loggers instances
1367	* Apply filter wp_optimize_loggers
1368	*
1369	* @return array
1370	*/
1371	public function wpo_loggers() {
1372
1373	$loggers = array();
1374	$loggers_classes_by_id = array();
1375	$options_keys = array();
1376
1377	$loggers_classes = $this->get_loggers_classes();
1378
1379	foreach ($loggers_classes as $logger_class => $source) {
1380	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1381	}
1382
1383	$options = $this->get_options();
1384
1385	$saved_loggers = $options->get_option('logging');
1386	$logger_additional_options = $options->get_option('logging-additional');
1387
1388	// create loggers classes instances.
1389	if (!empty($saved_loggers)) {
1390	// check for previous version options format.
1391	$keys = array_keys($saved_loggers);
1392
1393	// if options stored in old format then reformat it.
1394	if (false == is_numeric($keys[0])) {
1395	$_saved_loggers = array();
1396	foreach ($saved_loggers as $logger_id => $enabled) {
1397	if ($enabled) {
1398	$_saved_loggers[] = $logger_id;
1399	}
1400	}
1401
1402	// fill email with admin.
1403	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1404	$logger_additional_options['updraft_email_logger'] = array(
1405	get_option('admin_email')
1406	);
1407	}
1408
1409	$saved_loggers = $_saved_loggers;
1410	}
1411
1412	foreach ($saved_loggers as $i => $logger_id) {
1413
1414	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1415
1416	$logger_class = $loggers_classes_by_id[$logger_id];
1417
1418	$logger = new $logger_class();
1419
1420	$logger_options = $logger->get_options_list();
1421
1422	if (!empty($logger_options)) {
1423	foreach (array_keys($logger_options) as $option_name) {
1424	if (array_key_exists($option_name, $options_keys)) {
1425	$options_keys[$option_name]++;
1426	} else {
1427	$options_keys[$option_name] = 0;
1428	}
1429
1430	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1431
1432	// if options in old format then get correct value.
1433	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1434	$option_value = array_shift($logger_additional_options[$logger_id]);
1435	}
1436
1437	$logger->set_option($option_name, $option_value);
1438	}
1439	}
1440
1441	// check if logger is active.
1442	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1443
1444	if ($active) {
1445	$logger->enable();
1446	} else {
1447	$logger->disable();
1448	}
1449
1450	$loggers[] = $logger;
1451	}
1452	}
1453
1454	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1455
1456	return $loggers;
1457	}
1458
1459	/**
1460	* Returns associative array with logger class name in a key and path to class file in a value.
1461	*
1462	* @return array
1463	*/
1464	public function get_loggers_classes() {
1465	$loggers_classes = array(
1466	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1467	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1468	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1469	);
1470
1471	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1472
1473	if (!empty($loggers_classes)) {
1474	foreach ($loggers_classes as $logger_class => $logger_file) {
1475	if (!class_exists($logger_class)) {
1476	if (is_file($logger_file)) {
1477	include_once($logger_file);
1478	}
1479	}
1480	}
1481	}
1482
1483	return $loggers_classes;
1484	}
1485
1486	/**
1487	* Returns information about all loggers classes.
1488	*
1489	* @return array
1490	*/
1491	public function get_loggers_classes_info() {
1492	$loggers_classes = $this->get_loggers_classes();
1493
1494	$loggers_classes_info = array();
1495
1496	if (!empty($loggers_classes)) {
1497	foreach (array_keys($loggers_classes) as $logger_class_name) {
1498
1499	if (!class_exists($logger_class_name)) continue;
1500
1501	$logger_id = strtolower($logger_class_name);
1502	$logger_class = new $logger_class_name();
1503
1504	$loggers_classes_info[$logger_id] = array(
1505	'description' => $logger_class->get_description(),
1506	'available' => $logger_class->is_available(),
1507	'allow_multiple' => $logger_class->is_allow_multiple(),
1508	'options' => $logger_class->get_options_list()
1509	);
1510	}
1511	}
1512
1513	return $loggers_classes_info;
1514	}
1515
1516	/**
1517	* Returns true if optimization works in multisite mode
1518	*
1519	* @return boolean
1520	*/
1521	public function is_multisite_mode() {
1522	return (is_multisite() && self::is_premium());
1523	}
1524
1525	/**
1526	* Returns true if current user can run optimizations.
1527	*
1528	* @return bool
1529	*/
1530	public function can_run_optimizations() {
1531	// we don't check permissions for cron jobs.
1532	if (defined('DOING_CRON') && DOING_CRON) return true;
1533
1534	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1535	return true;
1536	}
1537
1538	/**
1539	* Returns true if current user can manage plugin options.
1540	*
1541	* @return bool
1542	*/
1543	public function can_manage_options() {
1544	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1545	return true;
1546	}
1547
1548	/**
1549	* Returns list of all sites in multisite
1550	*
1551	* @return array
1552	*/
1553	public function get_sites() {
1554	$sites = array();
1555	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1556	if (function_exists('get_sites')) {
1557	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1558	} elseif (function_exists('wp_get_sites')) {
1559	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1560	}
1561	return $sites;
1562	}
1563
1564	/**
1565	* Returns script memory limit in megabytes.
1566	*
1567	* @param bool $memory_limit
1568	* @return int
1569	*/
1570	public function get_memory_limit($memory_limit = false) {
1571	// Returns in megabytes
1572	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1573	$memory_limit = rtrim($memory_limit);
1574
1575	return $this->return_bytes($memory_limit);
1576	}
1577
1578	/**
1579	* Returns free memory in bytes.
1580	*
1581	* @return int
1582	*/
1583	public function get_free_memory() {
1584	return $this->get_memory_limit() - memory_get_usage();
1585	}
1586
1587	/**
1588	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1589	*
1590	* @return int memory limit in bytes.
1591	*/
1592	public function get_script_memory_limit() {
1593	$memory_limit = $this->get_memory_limit();
1594
1595	if (defined('WP_MAX_MEMORY_LIMIT')) {
1596	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1597
1598	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1599	$memory_limit = $wp_memory_limit;
1600	}
1601	}
1602
1603	return $memory_limit;
1604	}
1605
1606	/**
1607	* Returns max packet size for database.
1608	*
1609	* @return int\|string
1610	*/
1611	public function get_max_packet_size() {
1612	global $wpdb;
1613	static $mp = 0;
1614
1615	if ($mp > 0) return $mp;
1616
1617	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1618	// Default to 1MB
1619	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1620	// 32MB
1621	if ($mp < 33554432) {
1622	$save = $wpdb->show_errors(false);
1623	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1624	$wpdb->show_errors($save);
1625
1626	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1627	// Default to 1MB
1628	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1629	}
1630
1631	return $mp;
1632	}
1633
1634	/**
1635	* Converts shorthand memory notation value to bytes.
1636	* From http://php.net/manual/en/function.ini-get.php
1637	*
1638	* @param string $val shorthand memory notation value.
1639	*/
1640	public function return_bytes($val) {
1641	$val = trim($val);
1642	$last = strtolower($val[strlen($val)-1]);
1643	$val = (int) $val;
1644	switch ($last) {
1645	case 'g':
1646	$val *= 1024;
1647	// no break
1648	case 'm':
1649	$val *= 1024;
1650	// no break
1651	case 'k':
1652	$val *= 1024;
1653	}
1654
1655	return $val;
1656	}
1657
1658	/**
1659	* Log fatal errors to defined log destinations.
1660	*/
1661	public function log_fatal_errors() {
1662	$last_error = error_get_last();
1663
1664	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1665	$this->get_logger()->critical($last_error['message']);
1666	}
1667	}
1668
1669	/**
1670	* Close browser connection and continue script work. - Taken from UpdraftPlus
1671	*
1672	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1673	* @return void
1674	*/
1675	public function close_browser_connection($txt = '') {
1676	if (!headers_sent()) {
1677	// Close browser connection so that it can resume AJAX polling
1678	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1679	header('Connection: close');
1680	header('Content-Encoding: none');
1681	}
1682
1683	if (session_id()) session_write_close();
1684	echo "\r\n\r\n";
1685	echo $txt;
1686	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1687	$ob_level = ob_get_level();
1688	while ($ob_level > 0) {
1689	ob_end_flush();
1690	$ob_level--;
1691	}
1692	flush();
1693	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1694	}
1695
1696	/**
1697	* Get the current theme's style.css headers
1698	*
1699	* @return array\|WP_Error
1700	*/
1701	public function get_stylesheet_headers() {
1702	static $headers;
1703	if (isset($headers)) return $headers;
1704
1705	$style = get_template_directory_uri() . '/style.css';
1706
1707	/**
1708	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1709	*
1710	* @param array $request_params Default parameters
1711	*/
1712	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1713
1714	// trying to load style.css.
1715	$response = wp_remote_get($style, $request_params);
1716
1717	if (is_a($response, 'WP_Error')) return $response;
1718
1719	$headers = wp_remote_retrieve_headers($response);
1720
1721	if (method_exists($headers, 'getAll')) {
1722	$headers = $headers->getAll();
1723	}
1724
1725	return is_array($headers) ? $headers : array();
1726	}
1727
1728	/**
1729	* Try to change PHP script time limit.
1730	*/
1731	public function change_time_limit() {
1732	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1733
1734	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1735	}
1736
1737	/**
1738	* Does the request come from UDC
1739	*
1740	* @return boolean
1741	*/
1742	public function is_updraft_central_request() {
1743	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1744	}
1745
1746	/**
1747	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1748	*
1749	* @return boolean
1750	*/
1751	public function template_should_include_data() {
1752	/**
1753	* Filters wether data should be included in certain templates or not.
1754	*/
1755	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1756	}
1757
1758	/**
1759	* Load the templates for the modal window
1760	*/
1761	public function load_modal_template() {
1762	$this->include_template('modal.php');
1763	}
1764
1765	/**
1766	* Delete transients and semaphores data from options table.
1767	*/
1768	public function delete_transients_and_semaphores() {
1769	global $wpdb;
1770
1771	$masks = array(
1772	'updraft_locked_wpo_%',
1773	'updraft_unlocked_wpo_%',
1774	'updraft_last_lock_time_wpo_%',
1775	'updraft_semaphore_wpo_%',
1776	'wpo_locked_%',
1777	'wpo_unlocked_%',
1778	'wpo_last_lock_time_%',
1779	'wpo_semaphore_%',
1780	'_transient_timeout_wpo_%',
1781	'_transient_wpo_%',
1782	'updraft_lock_wpo_%',
1783	'wpo_last_scheduled_%',
1784	);
1785
1786	$where_parts = array();
1787	foreach ($masks as $mask) {
1788	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1789	}
1790
1791	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1792	}
1793
1794	/**
1795	* Prevents bots from indexing plugins list
1796	*/
1797	public function robots_txt($output) {
1798	$upload_dir = wp_upload_dir();
1799	$path = parse_url($upload_dir['baseurl']);
1800	$output .= "\nUser-agent: *";
1801	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo-plugins-tables-list.json\n";
1802	return $output;
1803	}
1804
1805	/**
1806	* Returns desired enqueue version string
1807	*
1808	* @return string Enqueue version as string
1809	*/
1810	public function get_enqueue_version() {
1811	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1812	}
1813
1814	/**
1815	* Returns script suffix string
1816	*
1817	* @return string empty or `.min` suffix string
1818	*/
1819	public function get_min_or_not_string() {
1820	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1821	}
1822
1823	/**
1824	* Returns script suffix string with WPO_VERSION
1825	*
1826	* @return string empty or min suffix with wpo_version string
1827	*/
1828	public function get_min_or_not_internal_string() {
1829	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1830	}
1831
1832	/**
1833	* Instantiate Ajax handling class
1834	*/
1835	private function load_ajax_handler() {
1836	WPO_Ajax::get_instance();
1837	}
1838	}
1839
1840	/**
1841	* Unschedule specific tasks:
1842	* `wpo_cron_event2` => DB optimizations
1843	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
1844	*
1845	* @return void
1846	*/
1847	function wpo_cron_deactivate() {
1848	WP_Optimize()->log('running wpo_cron_deactivate()');
1849	wp_clear_scheduled_hook('wpo_cron_event2');
1850	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1851	}
1852
1853	function WP_Optimize() {
1854	return WP_Optimize::instance();
1855	}
1856
1857	endif;
1858
1859	$GLOBALS['wp_optimize'] = WP_Optimize();
1860