wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.4.2, 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: 3.4.2
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', '3.4.2');
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	$this->load_ajax_handler();
71	WP_Optimize_Heartbeat::get_instance();
72
73	// Show update to Premium notice for non-premium multisite.
74	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
75
76	// Action column (show repair button if need).
77	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
78
79	/**
80	* Add action for display Images > Compress images tab.
81	*/
82	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
83
84	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
85
86	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
87
88	register_shutdown_function(array($this, 'log_fatal_errors'));
89
90	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
91
92	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
93
94	$import_done_hooks = array(
95	'import_end', // wordpress importer
96	'pmxi_after_xml_import', // wp all import
97	);
98
99	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
100
101	foreach ($db_update_hooks as $hook) {
102	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
103	}
104	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
105
106	}
107
108	/**
109	* Auto-loads classes.
110	*
111	* @param string $class_name The name of the class.
112	*/
113	private function loader($class_name) {
114	$dirs = $this->get_class_directories();
115
116	foreach ($dirs as $dir) {
117	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
118	if (file_exists($class_file)) {
119	require_once($class_file);
120	return;
121	}
122	}
123
124	// Include PHP Minify - https://github.com/matthiasmullie/minify
125	if (strpos($class_name, 'MatthiasMullie') !== false) {
126	$class_name_parts = explode('\\', $class_name);
127	$class_file = WPO_PLUGIN_MAIN_PATH.'vendor/'.strtolower($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';
128	if (file_exists($class_file)) {
129	require_once($class_file);
130	return;
131	}
132	}
133
134	if ('Minify_HTML' == $class_name) {
135	require_once WPO_PLUGIN_MAIN_PATH.'vendor/mrclay/minify/lib/Minify/HTML.php';
136	return;
137	}
138	}
139
140	/**
141	* Returns an array of class directories
142	*
143	* @return array
144	*/
145	private function get_class_directories() {
146	return array(
147	'cache',
148	'compatibility',
149	'includes',
150	'minify',
151	'optimizations',
152	'webp',
153	);
154	}
155
156	/**
157	* Initialize Admin class to load admin UI
158	*/
159	private function load_admin() {
160	$this->get_admin_instance();
161	}
162
163	/**
164	* Returns Admin class instance
165	*
166	* @return WP_Optimize_Admin
167	*/
168	public function get_admin_instance() {
169	return WP_Optimize_Admin::instance();
170	}
171
172	/**
173	* Detect when an active plugin or theme is updated, and trigger an action
174	*
175	* @param object $upgrader_object
176	* @param array $options
177	* @return void
178	*/
179	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
180	if (empty($options) \|\| !isset($options['type'])) return;
181
182	$should_purge_cache = false;
183	$skin = $upgrader_object->skin;
184	if ('plugin' === $options['type']) {
185	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
186	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
187	$should_purge_cache = true;
188	}
189	} elseif ('theme' === $options['type']) {
190	$active_theme = get_stylesheet();
191	$parent_theme = get_template();
192	// A theme is updated using the upload system
193	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
194	$updated_theme = $upgrader_object->result['destination_name'];
195	// Check if the theme is in use
196	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
197	$should_purge_cache = true;
198	}
199	// A theme is updated using the classic update system
200	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
201	// Check if the theme is in use
202	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
203	$should_purge_cache = true;
204	}
205	}
206	}
207
208	/**
209	* Action executed when an active theme or plugin was updated
210	*/
211	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
212
213	}
214
215	/**
216	* Sets a flag to indicate an import action is done, if needed
217	*/
218	public function maybe_schedule_update_record_count_event() {
219	if (!wp_next_scheduled('wpo_update_record_count_event')) {
220	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
221	}
222	}
223
224	public function admin_page_wpo_images_smush() {
225	$options = Updraft_Smush_Manager()->get_smush_options();
226	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
227	$sites = WP_Optimize()->get_sites();
228	$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()));
229	$this->include_template('images/smush-popup.php');
230	}
231
232	public static function instance() {
233	if (empty(self::$_instance)) {
234	self::$_instance = new self();
235	}
236	return self::$_instance;
237	}
238
239	public function get_optimizer() {
240	return WP_Optimizer::instance();
241	}
242
243	/**
244	* Adds 3rd party plugin compatibilities.
245	*/
246	public function load_compatibilities() {
247	WPO_Polylang_Compatibility::instance();
248	WPO_Page_Builder_Compatibility::instance();
249	WPO_Custom_Permalink_Compatibility::instance();
250	WPO_TranslatePress_Compatibility::instance();
251
252	do_action('wpo_load_compatibilities');
253	}
254
255	/**
256	* Get and instantiate WP_Optimize_Minify
257	*
258	* @return WP_Optimize_Minify
259	*/
260	public function get_minify() {
261	return WP_Optimize_Minify::instance();
262	}
263
264	public function get_options() {
265	return WP_Optimize_Options::instance();
266	}
267
268	public function get_notices() {
269	return WP_Optimize_Notices::instance();
270	}
271
272	/**
273	* Returns instance if WPO_Page_Cache class.
274	*
275	* @return WPO_Page_Cache
276	*/
277	public function get_page_cache() {
278	return WPO_Page_Cache::instance();
279	}
280
281	/**
282	* Returns instance if WP_Optimize_WebP class.
283	*
284	* @return WP_Optimize_WebP
285	*/
286	public function get_webp_instance() {
287	return WP_Optimize_WebP::get_instance();
288	}
289
290	/**
291	* Detects if the platform is Kinsta or not
292	*
293	* @return bool Returns true if it is Kinsta platform, otherwise returns false
294	*/
295	private function is_kinsta() {
296	return isset($_SERVER['KINSTA_CACHE_ZONE']);
297	}
298
299	/**
300	* Detects whether the server handles cache. eg. Nginx cache
301	*/
302	public function does_server_handles_cache() {
303	return $this->is_kinsta();
304	}
305
306	/**
307	* Detects whether the server supports table optimization.
308	*
309	* Some servers prevent table optimization
310	* because InnoDB engine does not optimize table
311	* instead it drops tables and recreate them
312	* which results in elevated disk write operations
313	*/
314	public function does_server_allows_table_optimization() {
315	return !$this->is_kinsta();
316	}
317
318	/**
319	* Detects whether the server supports local webp conversion tools
320	*/
321	private function does_server_allows_local_webp_conversion() {
322	return !$this->is_kinsta();
323	}
324
325	/**
326	* Create instance of WP_Optimize_Browser_Cache.
327	*
328	* @return WP_Optimize_Browser_Cache
329	*/
330	public function get_browser_cache() {
331	return WP_Optimize_Browser_Cache::instance();
332	}
333
334	/**
335	* Returns WP_Optimize_Database_Information instance.
336	*
337	* @return WP_Optimize_Database_Information
338	*/
339	public function get_db_info() {
340	return WP_Optimize_Database_Information::instance();
341	}
342
343	/**
344	* Returns instance of WP_Optimize_Gzip_Compression.
345	*
346	* @return WP_Optimize_Gzip_Compression
347	*/
348	public function get_gzip_compression() {
349	return WP_Optimize_Gzip_Compression::instance();
350	}
351
352	/**
353	* Create instance of WP_Optimize_Htaccess.
354	*
355	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
356	* @return WP_Optimize_Htaccess
357	*/
358	public static function get_htaccess($htaccess_file = '') {
359	return new WP_Optimize_Htaccess($htaccess_file);
360	}
361
362	/**
363	* Return instance of Updraft_Logger
364	*
365	* @return Updraft_Logger
366	*/
367	public function get_logger() {
368	return Updraft_Logger::instance();
369	}
370
371	/**
372	* Check if the current page belongs to WP-Optimize.
373	*
374	* @return bool
375	*/
376	public function is_wpo_page() {
377	$current_screen = get_current_screen();
378
379	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
380	}
381
382	/**
383	* Enqueue scripts and styles on WP-Optimize pages.
384	*/
385	public function admin_enqueue_scripts() {
386	$enqueue_version = $this->get_enqueue_version();
387	$min_or_not = $this->get_min_or_not_string();
388	$min_or_not_internal = $this->get_min_or_not_internal_string();
389
390	// Register or enqueue common scripts
391	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
392	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
393	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
394
395	// load scripts and styles only on WP-Optimize pages.
396	if (!$this->is_wpo_page()) return;
397
398	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
399
400	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
401
402	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
403	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js'), $enqueue_version);
404	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$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'), $enqueue_version);
405	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
406	// Using tablesorter to help with organising the DB size on Table Information
407	// https://github.com/Mottie/tablesorter
408	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
409
410	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
411
412	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
413
414	$js_variables = $this->wpo_js_translations();
415	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
416
417	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
418
419	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
420	}
421
422	/**
423	* Enqueue any required front-end scripts
424	*
425	* @return void
426	*/
427	public function frontend_enqueue_scripts() {
428	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
429	$enqueue_version = $this->get_enqueue_version();
430	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
431
432	// Register or enqueue common scripts
433	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
434	}
435
436	/**
437	* Load Task Manager
438	*/
439	public function get_task_manager() {
440	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
441
442	Updraft_Tasks_Activation::check_updates();
443
444	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
445	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
446	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
447
448	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
449	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
450
451	return Updraft_Smush_Manager();
452	}
453
454	/**
455	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
456	*
457	* @returns Boolean
458	*/
459	public static function is_premium() {
460	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
461	$wp_optimize_premium = WP_Optimize_Premium();
462	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
463	}
464	return false;
465	}
466
467	/**
468	* 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.
469	*
470	* @return bool
471	*/
472	public function is_apache_server() {
473	global $is_apache;
474	return $is_apache;
475	}
476
477	/**
478	* Check if script running on IIS web server.
479	*
480	* @return bool
481	*/
482	public function is_IIS_server() {
483	global $is_IIS, $is_iis7;
484	return $is_IIS \|\| $is_iis7;
485	}
486
487	/**
488	* Check if Apache module or modules active.
489	*
490	* @param string\|array $module - single Apache module name or list of Apache module names.
491	*
492	* @return bool\|null - if null, the result was indeterminate
493	*/
494	public function is_apache_module_loaded($module) {
495	if (!$this->is_apache_server()) return false;
496
497	if (!function_exists('apache_get_modules')) return null;
498
499	$module_loaded = true;
500
501	if (is_array($module)) {
502	foreach ($module as $single_module) {
503	if (!in_array($single_module, apache_get_modules())) {
504	$module_loaded = false;
505	break;
506	}
507	}
508	} else {
509	$module_loaded = in_array($module, apache_get_modules());
510	}
511
512	return $module_loaded;
513	}
514
515	/**
516	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
517	*/
518	public function plugins_loaded() {
519
520	if ($this->does_server_handles_cache()) {
521	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
522
523	// If newly migrated to server that handles cache, disable wpo cache
524	$cache = $this->get_page_cache();
525	if ($cache->is_enabled()) {
526	$cache->disable();
527	}
528	}
529
530	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
531
532	// Run Premium loader if it exists
533	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
534	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
535	}
536
537	// load defaults
538	WP_Optimize()->get_options()->set_default_options();
539
540	// Initialize loggers.
541	$this->setup_loggers();
542
543	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
544	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
545	deactivate_plugins($free_plugin);
546
547	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
548	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
549	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
550
551	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
552	file_put_contents($advanced_cache_filename, '');
553	}
554	}
555
556	// Registers the notice letting the user know it cannot be active if premium is active.
557	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
558	return;
559	}
560
561	// Loads the task manager
562	$this->get_task_manager();
563
564	// Loads the language file.
565	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
566
567	// Load 3rd party plugin compatibilities.
568	$this->load_compatibilities();
569
570	// Load page cache.
571	$this->get_page_cache();
572	$this->init_page_cache();
573
574	// Include minify
575	$this->get_minify();
576	$this->run_updates();
577
578	// We need this here because webp can be unavailable because of server moves
579	// This deletes already converted webp images and original image file when a media is deleted
580	WP_Optimize_WebP_Images::get_instance();
581
582	// Include WebP
583	if (WPO_USE_WEBP_CONVERSION) {
584	$this->get_webp_instance();
585	}
586
587	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
588	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
589	}
590
591	/**
592	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
593	* (e.g. "central" folder)
594	*
595	* @param array $hosts List of plugins having the "central" library integrated into them
596	*
597	* @return array
598	*/
599	public function attach_updraftcentral_host($hosts) {
600	$hosts[] = 'wp-optimize';
601	return $hosts;
602	}
603
604	/**
605	* Filter cache tabs (when it is Kinsta)
606	*
607	* @param array $tabs An array of tabs
608	*
609	* @return array $tabs An array of tabs
610	*/
611	public function filter_cache_tabs($tabs) {
612	unset($tabs['preload']);
613	unset($tabs['advanced']);
614	unset($tabs['gzip']);
615	unset($tabs['settings']);
616	return $tabs;
617	}
618
619	/**
620	* Check whether one of free/Premium is active (whether it is this instance or not)
621	*
622	* @param String $which - 'free' or 'premium'
623	*
624	* @return String\|Boolean - plugin path (if installed) or false if not
625	*/
626	private function is_active($which = 'free') {
627	$active_plugins = $this->get_active_plugins();
628	foreach ($active_plugins as $file) {
629	if ('wp-optimize.php' == basename($file)) {
630	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
631	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
632	}
633	}
634	return false;
635	}
636
637	/**
638	* Gets an array of plugins active on either the current site, or site-wide
639	*
640	* @return Array - a list of plugin paths (relative to the plugin directory)
641	*/
642	private function get_active_plugins() {
643
644	// Gets all active plugins on the current site
645	$active_plugins = get_option('active_plugins');
646
647	if (is_multisite()) {
648	$network_active_plugins = get_site_option('active_sitewide_plugins');
649	if (!empty($network_active_plugins)) {
650	$network_active_plugins = array_keys($network_active_plugins);
651	$active_plugins = array_merge($active_plugins, $network_active_plugins);
652	}
653	}
654
655	return $active_plugins;
656	}
657
658	/**
659	* This function checks whether a specific plugin is installed, and returns information about it
660	*
661	* @param string $name Specify "Plugin Name" to return details about it.
662	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
663	*/
664	public function is_installed($name) {
665
666	// Needed to have the 'get_plugins()' function
667	include_once(ABSPATH.'wp-admin/includes/plugin.php');
668
669	// Gets all plugins available
670	$get_plugins = get_plugins();
671
672	$active_plugins = $this->get_active_plugins();
673
674	$plugin_info = array();
675	$plugin_info['installed'] = false;
676	$plugin_info['active'] = false;
677
678	// Loops around each plugin available.
679	foreach ($get_plugins as $key => $value) {
680	// If the plugin name matches that of the specified name, it will gather details.
681	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
682	$plugin_info['installed'] = true;
683	$plugin_info['name'] = $key;
684	$plugin_info['version'] = $value['Version'];
685	if (in_array($key, $active_plugins)) {
686	$plugin_info['active'] = true;
687	}
688	break;
689	}
690	return $plugin_info;
691	}
692
693	/**
694	* This is a notice to show users that premium is installed
695	*/
696	public function show_admin_notice_premium() {
697	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
698	if (isset($_GET['activate'])) unset($_GET['activate']);
699	}
700
701	/**
702	* Show update to Premium notice for non-premium multisite.
703	*/
704	public function show_multisite_update_to_premium_notice() {
705	if (!is_multisite() \|\| self::is_premium()) return;
706
707	echo '<p><a href="'.$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>';
708	}
709
710	public function admin_init() {
711	$pagenow = $GLOBALS['pagenow'];
712
713	$this->register_template_directories();
714
715	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
716	$options = $this->get_options();
717
718	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
719
720	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
721	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
722	$installed_for = (time() - $installed);
723	}
724
725	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
726	add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
727	}
728	}
729
730	if ($this->is_wp_smush_installed()) {
731	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
732	}
733	}
734
735	/**
736	* Checks whether the WP Smush plugin is active or not
737	*
738	* @return bool
739	*/
740	private function is_wp_smush_installed() {
741	return is_plugin_active('wp-smushit/wp-smush.php');
742	}
743
744	/**
745	* Remove WPO plugin name from WP Smushit transient value
746	*
747	* @return array $active_plugins
748	*/
749	public function modify_wp_smush_conflict_check($active_plugins) {
750	// This can be boolean value since it is return value of get_transient
751	if (!is_array($active_plugins)) return $active_plugins;
752
753	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
754	unset($active_plugins[$key]);
755	}
756	return $active_plugins;
757	}
758
759	/**
760	* Get the install or update notice instance
761	*
762	* @return WP_Optimize_Install_Or_Update_Notice
763	*/
764	public function get_install_or_update_notice() {
765	static $instance = null;
766	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
767	$instance = new WP_Optimize_Install_Or_Update_Notice();
768	return $instance;
769	}
770
771	/**
772	* Display an admin notice for an upgraded version.
773	*/
774	public function show_admin_notice_upgraded() {
775	$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
776	'is_premium' => WP_Optimize::is_premium()
777	));
778	}
779
780	public function capability_required() {
781	return apply_filters('wp_optimize_capability_required', 'manage_options');
782	}
783
784	/**
785	* Returns array of translations used in javascript code.
786	*
787	* @return array
788	*/
789	public function wpo_js_translations() {
790	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
791	return apply_filters('wpo_js_translations', array(
792	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
793	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
794	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
795	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
796	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
797	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
798	'table_optimization_timeout' => 120000,
799	'add' => __('Add', 'wp-optimize'),
800	'cancel' => __('Cancel', 'wp-optimize'),
801	'cancelling' => __('Cancelling...', 'wp-optimize'),
802	'enable' => __('Enable', 'wp-optimize'),
803	'disable' => __('Disable', 'wp-optimize'),
804	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
805	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
806	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
807	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
808	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
809	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
810	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
811	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
812	'update' => __('Update', 'wp-optimize'),
813	'run_now' => __('Run now', 'wp-optimize'),
814	'starting_preload' => __('Started preload...', 'wp-optimize'),
815	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
816	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
817	'number_of_files' => __('Number of files:', 'wp-optimize'),
818	'toggle_info' => __('Show information', 'wp-optimize'),
819	'delete_file' => __('Delete', 'wp-optimize'),
820	'added_to_list' => __('Added to the list', 'wp-optimize'),
821	'added_notice' => __('The file was added to the list', 'wp-optimize'),
822	'save_notice' => __('Save the changes', 'wp-optimize'),
823	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
824	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
825	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
826	'loading_data' => __('Loading data...', 'wp-optimize'),
827	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
828	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
829	'sites' => $this->get_sites(),
830	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
831	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
832	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
833	'network_site_url' => network_site_url(),
834	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
835	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
836	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
837	'importing' => __('Importing...', 'wp-optimize'),
838	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
839	'exported_on' => __('Which was exported on:', 'wp-optimize'),
840	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
841	'select_destination' => __('Select destination', 'wp-optimize'),
842	'show_information' => __('Show information', 'wp-optimize'),
843	'hide_information' => __('Hide information', 'wp-optimize'),
844	));
845	}
846
847	/**
848	* Manages the admin bar menu for caching (currently page and minify)
849	*/
850	public function cache_admin_bar($wp_admin_bar) {
851
852	$options = $this->get_options();
853	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
854
855	/**
856	* The "purge cache" menu items
857	*
858	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
859	* @param object $wp_admin_bar
860	*/
861	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
862
863	if (empty($menu_items) \|\| !is_array($menu_items)) return;
864
865	$wp_admin_bar->add_menu(array(
866	'id' => 'wpo_purge_cache',
867	'title' => __('Purge cache', 'wp-optimize'),
868	'href' => '#',
869	'meta' => array(
870	'title' => __('Purge cache', 'wp-optimize'),
871	),
872	'parent' => false,
873	));
874
875	foreach ($menu_items as $item) {
876	$wp_admin_bar->add_menu($item);
877	}
878	}
879
880	/**
881	* Add settings link on plugin page
882	*
883	* @param string $links Passing through the URL to be used within the HREF.
884	* @return string Returns the Links.
885	*/
886	public function plugin_settings_link($links) {
887
888	$admin_page_url = $this->get_options()->admin_page_url();
889	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
890
891	if (false == self::is_premium()) {
892	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
893	array_unshift($links, $premium_link);
894	}
895
896	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
897	array_unshift($links, $settings_link);
898
899	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
900	array_unshift($links, $optimize_link);
901	return $links;
902	}
903
904	/**
905	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
906	*
907	* @param string $content String for output to column
908	* @param object $table_info Object with table info.
909	*
910	* @return string
911	*/
912	public function tables_list_additional_column_data($content, $table_info) {
913	if ($table_info->is_needing_repair) {
914	$content .= '<div class="wpo_button_wrap">'
915	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
916	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
917	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
918	. '</div>';
919	}
920
921	// table belongs to plugin.
922	if ($table_info->can_be_removed) {
923	$content .= '<div>'
924	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
925	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
926	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
927	. '</div>';
928	}
929
930	// Add option for MyISAM to InnoDB conversion.
931	if ('MyISAM' == $table_info->Engine) {
932	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
933	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
934	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
935	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
936	. '</div>';
937
938	}
939
940	return $content;
941	}
942
943	/**
944	* Initialize WP-Optimize page cache.
945	*/
946	public function init_page_cache() {
947	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
948	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
949	$this->_cache_init_status = $this->get_page_cache()->enable();
950	}
951	}
952	}
953
954	/**
955	* Get init_page_cache() status.
956	*
957	* @return bool
958	*/
959	public function get_init_page_cache_status() {
960	return $this->_cache_init_status;
961	}
962
963	/**
964	* Schedules cron event based on selected schedule type
965	*
966	* @return void
967	*/
968	public function cron_activate() {
969	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
970
971	$options = $this->get_options();
972
973	if ($options->get_option('schedule') === false) {
974	$options->set_default_options();
975	} else {
976	if ('true' == $options->get_option('schedule')) {
977	if (!wp_next_scheduled('wpo_cron_event2')) {
978	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
979
980	// Backward compatibility
981	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
982
983	$this_time = (86400 * 7);
984
985	switch ($schedule_type) {
986	case "wpo_daily":
987	$this_time = 86400;
988	break;
989
990	case "wpo_weekly":
991	$this_time = (86400 * 7);
992	break;
993
994	case "wpo_fortnightly":
995	$this_time = (86400 * 14);
996	break;
997
998	case "wpo_monthly":
999	$this_time = (86400 * 30);
1000	break;
1001	}
1002
1003	add_action('wpo_cron_event2', array($this, 'cron_action'));
1004	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1005	WP_Optimize()->log('running wp_schedule_event()');
1006	if (is_wp_error($result)) {
1007	$error_msg = $result->get_error_message();
1008	WP_Optimize()->log($error_msg);
1009	WP_Optimize()->log(print_r($result, true));
1010	} else {
1011	WP_Optimize()->log($result);
1012	}
1013	}
1014	}
1015	}
1016	}
1017
1018	/**
1019	* Clears all cron events
1020	*
1021	* @return void
1022	*/
1023	public function wpo_cron_deactivate() {
1024	$cron_jobs = _get_cron_array();
1025	foreach ($cron_jobs as $job) {
1026	foreach (array_keys($job) as $hook) {
1027	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1028	}
1029	}
1030	}
1031
1032	/**
1033	* Scheduler public functions to update schedulers
1034	*
1035	* @param array $schedules An array of schedules being passed.
1036	* @return array An array of schedules being returned.
1037	*/
1038	public function cron_schedules($schedules) {
1039	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1040	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1041	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1042	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1043	return $schedules;
1044	}
1045
1046	/**
1047	* Returns count of overdue cron jobs.
1048	*
1049	* @return integer
1050	*/
1051	public function howmany_overdue_crons() {
1052	$how_many_overdue = 0;
1053	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1054	$crons = _get_cron_array();
1055	if (is_array($crons)) {
1056	$timenow = time();
1057	foreach ($crons as $jt => $job) {
1058	if ($jt < $timenow) {
1059	$how_many_overdue++;
1060	}
1061	}
1062	}
1063	}
1064	return $how_many_overdue;
1065	}
1066
1067	/**
1068	* Run updates on plugin activation.
1069	*/
1070	public function run_updates() {
1071	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1072	WP_Optimize_Updates::check_updates();
1073	}
1074
1075	/**
1076	* Returns warning about overdue crons.
1077	*
1078	* @param int $howmany count of overdue crons
1079	* @return string
1080	*/
1081	public function show_admin_warning_overdue_crons($howmany) {
1082	$ret = '<div class="updated below-h2"><p>';
1083	$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>';
1084	$ret .= '</p></div>';
1085	return $ret;
1086	}
1087
1088	private function wp_normalize_path($path) {
1089	// Wp_normalize_path is not present before WP 3.9.
1090	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1091	// Taken from WP 4.6.
1092	$path = str_replace('\\', '/', $path);
1093	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1094	if (':' === substr($path, 1, 1)) {
1095	$path = ucfirst($path);
1096	}
1097	return $path;
1098	}
1099
1100	public function get_templates_dir() {
1101	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1102	}
1103
1104	public function get_templates_url() {
1105	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1106	}
1107
1108	/**
1109	* Return or output view content
1110	*
1111	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1112	* @param Boolean $return_instead_of_echo - what to do with the results
1113	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1114	*
1115	* @return String\|Void
1116	*/
1117	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1118	if ($return_instead_of_echo) ob_start();
1119
1120	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1121	$prefix = $matches[1];
1122	$suffix = $matches[2];
1123	if (isset($this->template_directories[$prefix])) {
1124	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1125	}
1126	}
1127
1128	if (!isset($template_file)) {
1129	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1130	}
1131
1132	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1133
1134	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1135
1136	if (!file_exists($template_file)) {
1137	error_log("WP Optimize: template not found: ".$template_file);
1138	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1139	} else {
1140	extract($extract_these);
1141	// The following are useful variables which can be used in the template.
1142	// They appear as unused, but may be used in the $template_file.
1143	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1144	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1145	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1146	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1147	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1148	include $template_file;
1149	}
1150
1151	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1152
1153	if ($return_instead_of_echo) return ob_get_clean();
1154	}
1155
1156	/**
1157	* Build a list of template directories (stored in self::$template_directories)
1158	*/
1159	private function register_template_directories() {
1160
1161	$template_directories = array();
1162
1163	$templates_dir = $this->get_templates_dir();
1164
1165	if ($dh = opendir($templates_dir)) {
1166	while (($file = readdir($dh)) !== false) {
1167	if ('.' == $file \|\| '..' == $file) continue;
1168	if (is_dir($templates_dir.'/'.$file)) {
1169	$template_directories[$file] = $templates_dir.'/'.$file;
1170	}
1171	}
1172	closedir($dh);
1173	}
1174
1175	// Optimal hook for most extensions to hook into.
1176	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1177
1178	}
1179
1180	/**
1181	* Message to debug
1182	*
1183	* @param string $message Message to insert into the log.
1184	* @param array $context array with variables used in $message like in template,
1185	* for ex.
1186	* $message = 'Hello {message}';
1187	* $context = ['message' => 'world']
1188	* 'Hello world' string will be saved in log.
1189	*/
1190	public function log($message, $context = array()) {
1191	$this->get_logger()->debug($message, $context);
1192	}
1193
1194	/**
1195	* Format Bytes Into KB/MB
1196	*
1197	* @param mixed $bytes Number of bytes to be converted.
1198	* @param integer $decimals the number of decimal digits
1199	* @return integer return the correct format size.
1200	*/
1201	public function format_size($bytes, $decimals = 2) {
1202	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1203
1204	if (1073741824 <= $bytes) {
1205	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1206	} elseif (1048576 <= $bytes) {
1207	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1208	} elseif (1024 <= $bytes) {
1209	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1210	} elseif (1 < $bytes) {
1211	$bytes = $bytes . ' bytes';
1212	} elseif (1 == $bytes) {
1213	$bytes = $bytes . ' byte';
1214	} else {
1215	$bytes = '0 bytes';
1216	}
1217
1218	return $bytes;
1219	}
1220
1221	/**
1222	* Format a timestamp into a juman readable date time
1223	*
1224	* @param int $timestamp
1225	* @return string
1226	*/
1227	public function format_date_time($timestamp) {
1228	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1229	}
1230
1231	/**
1232	* Executed this function on cron event.
1233	*
1234	* @return void
1235	*/
1236	public function cron_action() {
1237
1238	$optimizer = $this->get_optimizer();
1239	$options = $this->get_options();
1240
1241	$this->log('WPO: Starting cron_action()');
1242	$options->update_option('last-optimized', time());
1243	if ('true' == $options->get_option('schedule')) {
1244	$this_options = $options->get_option('auto');
1245
1246	// Currently the output of the optimizations is not saved/used/logged.
1247	$optimizer->do_optimizations($this_options, 'auto');
1248	}
1249
1250	}
1251
1252	/**
1253	* Schedule cron tasks used by plugin.
1254	*
1255	* @return void
1256	*/
1257	public function schedule_plugin_cron_tasks() {
1258	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1259	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1260	}
1261
1262	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1263	}
1264
1265	/**
1266	* Do plugin background tasks.
1267	*
1268	* @return void
1269	*/
1270	public function do_weekly_cron_tasks() {
1271	// add tasks here.
1272	$this->get_db_info()->update_plugin_json();
1273	}
1274
1275	/**
1276	* This will customize a URL with a correct Affiliate link
1277	* This function can be update to suit any URL as longs as the URL is passed
1278	*
1279	* @param String $url - URL to be check to see if it an updraftplus match.
1280	* @param String $text - Text to be entered within the href a tags.
1281	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1282	* @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"').
1283	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1284	* @return String\|void
1285	*/
1286	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1287	// Check if the URL is UpdraftPlus.
1288	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1289
1290	// Check if the variable $text is empty (null value included), otherwise assign $html.
1291	$content = empty($text) ? $html : esc_html($text);
1292
1293	// Check if $attrs is an array to convert the attributes into a string line.
1294	$str_attrs = '';
1295	if (is_array($attrs)) {
1296	foreach ($attrs as $attr => $value) {
1297	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1298	}
1299	} else {
1300	// If $attrs is empty, the explode function will only return an empty array.
1301	$attrs = explode('=', $attrs);
1302	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1303	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1304	}
1305
1306	// Check if it is necessary to add a target value if the url is external
1307	$is_external_url = $this->is_external_url($url);
1308	if ($is_external_url) {
1309	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1310	$str_attrs .= ' target="_blank"';
1311	}
1312
1313	$result = sprintf(
1314	'<a href="%s" %s>%s</a>',
1315	esc_url($url),
1316	$str_attrs,
1317	$content
1318	);
1319
1320	if ($return_instead_of_echo) return $result;
1321	echo $result;
1322	}
1323
1324	/**
1325	* Check if a URL is external
1326	*
1327	* @param string $url
1328	* @return string
1329	*/
1330	public function is_external_url($url) {
1331	if (empty($url)) {
1332	return false;
1333	}
1334
1335	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1336	$url = wp_parse_url($url, PHP_URL_HOST);
1337
1338	// Compare the domains and return true if they are different
1339	return $current_domain !== $url;
1340	}
1341
1342	/**
1343	* Get an URL with an eventual affiliate ID
1344	*
1345	* @param string $url
1346	* @return string
1347	*/
1348	public function maybe_add_affiliate_params($url) {
1349	// Check if the URL is UpdraftPlus.
1350	if (false !== strpos($url, '//updraftplus.com')) {
1351	// Set URL with Affiliate ID.
1352	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1353
1354	// Apply filters.
1355	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1356	}
1357	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1358	}
1359
1360	/**
1361	* Setup WPO logger(s)
1362	*/
1363	public function setup_loggers() {
1364
1365	$logger = $this->get_logger();
1366	$loggers = $this->wpo_loggers();
1367
1368	if (!empty($loggers)) {
1369	foreach ($loggers as $_logger) {
1370	$logger->add_logger($_logger);
1371	}
1372	}
1373
1374	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1375	}
1376
1377	/**
1378	* Run logger actions after all optimizations done
1379	*/
1380	public function after_optimizations_logger_action() {
1381	$loggers = $this->get_logger()->get_loggers();
1382	if (!empty($loggers)) {
1383	foreach ($loggers as $logger) {
1384	if (is_a($logger, 'Updraft_Email_Logger')) {
1385	$logger->flush_log();
1386	}
1387	}
1388	}
1389	}
1390
1391	/**
1392	* Returns list of WPO loggers instances
1393	* Apply filter wp_optimize_loggers
1394	*
1395	* @return array
1396	*/
1397	public function wpo_loggers() {
1398
1399	$loggers = array();
1400	$loggers_classes_by_id = array();
1401	$options_keys = array();
1402
1403	$loggers_classes = $this->get_loggers_classes();
1404
1405	foreach ($loggers_classes as $logger_class => $source) {
1406	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1407	}
1408
1409	$options = $this->get_options();
1410
1411	$saved_loggers = $options->get_option('logging');
1412	$logger_additional_options = $options->get_option('logging-additional');
1413
1414	// create loggers classes instances.
1415	if (!empty($saved_loggers)) {
1416	// check for previous version options format.
1417	$keys = array_keys($saved_loggers);
1418
1419	// if options stored in old format then reformat it.
1420	if (false == is_numeric($keys[0])) {
1421	$_saved_loggers = array();
1422	foreach ($saved_loggers as $logger_id => $enabled) {
1423	if ($enabled) {
1424	$_saved_loggers[] = $logger_id;
1425	}
1426	}
1427
1428	// fill email with admin.
1429	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1430	$logger_additional_options['updraft_email_logger'] = array(
1431	get_option('admin_email')
1432	);
1433	}
1434
1435	$saved_loggers = $_saved_loggers;
1436	}
1437
1438	foreach ($saved_loggers as $i => $logger_id) {
1439
1440	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1441
1442	$logger_class = $loggers_classes_by_id[$logger_id];
1443
1444	$logger = new $logger_class();
1445
1446	$logger_options = $logger->get_options_list();
1447
1448	if (!empty($logger_options)) {
1449	foreach (array_keys($logger_options) as $option_name) {
1450	if (array_key_exists($option_name, $options_keys)) {
1451	$options_keys[$option_name]++;
1452	} else {
1453	$options_keys[$option_name] = 0;
1454	}
1455
1456	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1457
1458	// if options in old format then get correct value.
1459	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1460	$option_value = array_shift($logger_additional_options[$logger_id]);
1461	}
1462
1463	$logger->set_option($option_name, $option_value);
1464	}
1465	}
1466
1467	// check if logger is active.
1468	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1469
1470	if ($active) {
1471	$logger->enable();
1472	} else {
1473	$logger->disable();
1474	}
1475
1476	$loggers[] = $logger;
1477	}
1478	}
1479
1480	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1481
1482	return $loggers;
1483	}
1484
1485	/**
1486	* Returns associative array with logger class name in a key and path to class file in a value.
1487	*
1488	* @return array
1489	*/
1490	public function get_loggers_classes() {
1491	$loggers_classes = array(
1492	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1493	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1494	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1495	);
1496
1497	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1498
1499	if (!empty($loggers_classes)) {
1500	foreach ($loggers_classes as $logger_class => $logger_file) {
1501	if (!class_exists($logger_class)) {
1502	if (is_file($logger_file)) {
1503	include_once($logger_file);
1504	}
1505	}
1506	}
1507	}
1508
1509	return $loggers_classes;
1510	}
1511
1512	/**
1513	* Returns information about all loggers classes.
1514	*
1515	* @return array
1516	*/
1517	public function get_loggers_classes_info() {
1518	$loggers_classes = $this->get_loggers_classes();
1519
1520	$loggers_classes_info = array();
1521
1522	if (!empty($loggers_classes)) {
1523	foreach (array_keys($loggers_classes) as $logger_class_name) {
1524
1525	if (!class_exists($logger_class_name)) continue;
1526
1527	$logger_id = strtolower($logger_class_name);
1528	$logger_class = new $logger_class_name();
1529
1530	$loggers_classes_info[$logger_id] = array(
1531	'description' => $logger_class->get_description(),
1532	'available' => $logger_class->is_available(),
1533	'allow_multiple' => $logger_class->is_allow_multiple(),
1534	'options' => $logger_class->get_options_list()
1535	);
1536	}
1537	}
1538
1539	return $loggers_classes_info;
1540	}
1541
1542	/**
1543	* Returns true if optimization works in multisite mode
1544	*
1545	* @return boolean
1546	*/
1547	public function is_multisite_mode() {
1548	return (is_multisite() && self::is_premium());
1549	}
1550
1551	/**
1552	* Returns true if current user can run optimizations.
1553	*
1554	* @return bool
1555	*/
1556	public function can_run_optimizations() {
1557	// we don't check permissions for cron jobs.
1558	if (defined('DOING_CRON') && DOING_CRON) return true;
1559
1560	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1561	return true;
1562	}
1563
1564	/**
1565	* Returns true if current user can manage plugin options.
1566	*
1567	* @return bool
1568	*/
1569	public function can_manage_options() {
1570	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1571	return true;
1572	}
1573
1574	/**
1575	* Returns list of all sites in multisite
1576	*
1577	* @return array
1578	*/
1579	public function get_sites() {
1580	$sites = array();
1581	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1582	if (function_exists('get_sites')) {
1583	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1584	} elseif (function_exists('wp_get_sites')) {
1585	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1586	}
1587	return $sites;
1588	}
1589
1590	/**
1591	* Returns script memory limit in megabytes.
1592	*
1593	* @param bool $memory_limit
1594	* @return int
1595	*/
1596	public function get_memory_limit($memory_limit = false) {
1597	// Returns in megabytes
1598	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1599	$memory_limit = rtrim($memory_limit);
1600
1601	return $this->return_bytes($memory_limit);
1602	}
1603
1604	/**
1605	* Returns free memory in bytes.
1606	*
1607	* @return int
1608	*/
1609	public function get_free_memory() {
1610	return $this->get_memory_limit() - memory_get_usage();
1611	}
1612
1613	/**
1614	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1615	*
1616	* @return int memory limit in bytes.
1617	*/
1618	public function get_script_memory_limit() {
1619	$memory_limit = $this->get_memory_limit();
1620
1621	if (defined('WP_MAX_MEMORY_LIMIT')) {
1622	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1623
1624	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1625	$memory_limit = $wp_memory_limit;
1626	}
1627	}
1628
1629	return $memory_limit;
1630	}
1631
1632	/**
1633	* Returns max packet size for database.
1634	*
1635	* @return int\|string
1636	*/
1637	public function get_max_packet_size() {
1638	global $wpdb;
1639	static $mp = 0;
1640
1641	if ($mp > 0) return $mp;
1642
1643	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1644	// Default to 1MB
1645	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1646	// 32MB
1647	if ($mp < 33554432) {
1648	$save = $wpdb->show_errors(false);
1649	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1650	$wpdb->show_errors($save);
1651
1652	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1653	// Default to 1MB
1654	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1655	}
1656
1657	return $mp;
1658	}
1659
1660	/**
1661	* Converts shorthand memory notation value to bytes.
1662	* From http://php.net/manual/en/function.ini-get.php
1663	*
1664	* @param string $val shorthand memory notation value.
1665	*/
1666	public function return_bytes($val) {
1667	$val = trim($val);
1668	$last = strtolower($val[strlen($val)-1]);
1669	$val = (int) $val;
1670	switch ($last) {
1671	case 'g':
1672	$val *= 1024;
1673	// no break
1674	case 'm':
1675	$val *= 1024;
1676	// no break
1677	case 'k':
1678	$val *= 1024;
1679	}
1680
1681	return $val;
1682	}
1683
1684	/**
1685	* Log fatal errors to defined log destinations.
1686	*/
1687	public function log_fatal_errors() {
1688	$last_error = error_get_last();
1689
1690	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1691	$this->get_logger()->critical($last_error['message']);
1692	}
1693	}
1694
1695	/**
1696	* Close browser connection and continue script work. - Taken from UpdraftPlus
1697	*
1698	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1699	* @return void
1700	*/
1701	public function close_browser_connection($txt = '') {
1702	if (!headers_sent()) {
1703	// Close browser connection so that it can resume AJAX polling
1704	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1705	header('Content-Type: application/json');
1706	header('Connection: close');
1707	header('Content-Encoding: none');
1708	}
1709
1710	if (session_id()) session_write_close();
1711	echo "\r\n\r\n";
1712	echo $txt;
1713	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1714	$ob_level = ob_get_level();
1715	while ($ob_level > 0) {
1716	ob_end_flush();
1717	$ob_level--;
1718	}
1719	flush();
1720	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1721	if (function_exists('litespeed_finish_request')) litespeed_finish_request();
1722	}
1723
1724	/**
1725	* Get the current theme's style.css headers
1726	*
1727	* @return array\|WP_Error
1728	*/
1729	public function get_stylesheet_headers() {
1730	static $headers;
1731	if (isset($headers)) return $headers;
1732
1733	$style = get_template_directory_uri() . '/style.css';
1734
1735	/**
1736	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1737	*
1738	* @param array $request_params Default parameters
1739	*/
1740	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1741
1742	// trying to load style.css.
1743	$response = wp_remote_get($style, $request_params);
1744
1745	if (is_a($response, 'WP_Error')) return $response;
1746
1747	$headers = wp_remote_retrieve_headers($response);
1748
1749	if (method_exists($headers, 'getAll')) {
1750	$headers = $headers->getAll();
1751	}
1752
1753	return is_array($headers) ? $headers : array();
1754	}
1755
1756	/**
1757	* Try to change PHP script time limit.
1758	*/
1759	public function change_time_limit() {
1760	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1761
1762	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1763	}
1764
1765	/**
1766	* Does the request come from UDC
1767	*
1768	* @return boolean
1769	*/
1770	public function is_updraft_central_request() {
1771	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1772	}
1773
1774	/**
1775	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1776	*
1777	* @return boolean
1778	*/
1779	public function template_should_include_data() {
1780	/**
1781	* Filters wether data should be included in certain templates or not.
1782	*/
1783	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1784	}
1785
1786	/**
1787	* Load the templates for the modal window
1788	*/
1789	public function load_modal_template() {
1790	$this->include_template('modal.php');
1791	}
1792
1793	/**
1794	* Delete transients and semaphores data from options table.
1795	*/
1796	public function delete_transients_and_semaphores() {
1797	global $wpdb;
1798
1799	$masks = array(
1800	'updraft_locked_wpo_%',
1801	'updraft_unlocked_wpo_%',
1802	'updraft_last_lock_time_wpo_%',
1803	'updraft_semaphore_wpo_%',
1804	'wpo_locked_%',
1805	'wpo_unlocked_%',
1806	'wpo_last_lock_time_%',
1807	'wpo_semaphore_%',
1808	'_transient_timeout_wpo_%',
1809	'_transient_wpo_%',
1810	'updraft_lock_wpo_%',
1811	'wpo_last_scheduled_%',
1812	);
1813
1814	$where_parts = array();
1815	foreach ($masks as $mask) {
1816	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1817	}
1818
1819	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1820	}
1821
1822	/**
1823	* Prevents bots from indexing plugins list
1824	*/
1825	public function robots_txt($output) {
1826	$upload_dir = wp_upload_dir();
1827	$path = parse_url($upload_dir['baseurl']);
1828	$output .= "\nUser-agent: *";
1829	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo-plugins-tables-list.json\n";
1830	return $output;
1831	}
1832
1833	/**
1834	* Returns desired enqueue version string
1835	*
1836	* @return string Enqueue version as string
1837	*/
1838	public function get_enqueue_version() {
1839	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1840	}
1841
1842	/**
1843	* Returns script suffix string
1844	*
1845	* @return string empty or `.min` suffix string
1846	*/
1847	public function get_min_or_not_string() {
1848	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1849	}
1850
1851	/**
1852	* Returns script suffix string with WPO_VERSION
1853	*
1854	* @return string empty or min suffix with wpo_version string
1855	*/
1856	public function get_min_or_not_internal_string() {
1857	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1858	}
1859
1860	/**
1861	* Instantiate Ajax handling class
1862	*/
1863	private function load_ajax_handler() {
1864	WPO_Ajax::get_instance();
1865	}
1866	}
1867
1868	/**
1869	* Unschedule specific tasks:
1870	* `wpo_cron_event2` => DB optimizations
1871	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
1872	*
1873	* @return void
1874	*/
1875	function wpo_cron_deactivate() {
1876	WP_Optimize()->log('running wpo_cron_deactivate()');
1877	wp_clear_scheduled_hook('wpo_cron_event2');
1878	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1879	}
1880
1881	function WP_Optimize() {
1882	return WP_Optimize::instance();
1883	}
1884
1885	endif;
1886
1887	$GLOBALS['wp_optimize'] = WP_Optimize();
1888