wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.2.12, at wp-optimize.php

1,819 lines 58.8 KB

Raw Download Zip

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: 3.2.12
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', '3.2.12');
20	define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
21	define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
22	define('WPO_PREMIUM_NOTIFICATION', false);
23	define('WPO_MINIFY_PHP_VERSION_MET', version_compare(PHP_VERSION, '5.4', '>=') ? true : false);
24	if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true);
25
26	class WP_Optimize {
27
28	public $premium_version_link = 'https://getwpo.com/buy/';
29
30	private $template_directories;
31
32	protected static $_instance = null;
33
34	/**
35	* Class constructor
36	*/
37	public function __construct() {
38	spl_autoload_register(array($this, 'loader'));
39
40	// Checks if premium is installed along with plugins needed.
41	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
42
43	register_activation_hook(__FILE__, 'wpo_activation_actions');
44	register_deactivation_hook(__FILE__, 'wpo_deactivation_actions');
45	register_uninstall_hook(__FILE__, 'wpo_uninstall_actions');
46
47	$this->load_admin();
48	add_action('admin_init', array($this, 'admin_init'));
49	add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);
50
51	add_action('init', array($this, 'schedule_plugin_cron_tasks'));
52
53	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
54	add_action('wpo_cron_event2', array($this, 'cron_action'));
55	add_filter('cron_schedules', array($this, 'cron_schedules'));
56
57	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
58
59	if (!self::is_premium()) {
60	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
61	}
62
63	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
64
65	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
66
67	$this->load_ajax_handler();
68
69	// Show update to Premium notice for non-premium multisite.
70	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
71
72	// Action column (show repair button if need).
73	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
74
75	/**
76	* Add action for display Images > Compress images tab.
77	*/
78	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
79
80	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
81
82	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
83
84	register_shutdown_function(array($this, 'log_fatal_errors'));
85
86	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
87
88	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
89
90	$import_done_hooks = array(
91	'import_end', // wordpress importer
92	'pmxi_after_xml_import', // wp all import
93	);
94
95	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
96
97	foreach ($db_update_hooks as $hook) {
98	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
99	}
100	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
101	}
102
103	/**
104	* Auto-loads classes.
105	*
106	* @param string $class_name The name of the class.
107	*/
108	private function loader($class_name) {
109	$dirs = $this->get_class_directories();
110
111	foreach ($dirs as $dir) {
112	$class_file = WPO_PLUGIN_MAIN_PATH . $dir . '/class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
113	if (file_exists($class_file)) {
114	require_once($class_file);
115	return;
116	}
117	}
118	}
119
120	/**
121	* Returns an array of class directories
122	*
123	* @return array
124	*/
125	private function get_class_directories() {
126	return array(
127	'cache',
128	'includes',
129	'minify',
130	'optimizations',
131	'webp',
132	);
133	}
134
135	/**
136	* Initialize Admin class to load admin UI
137	*/
138	private function load_admin() {
139	$this->get_admin_instance();
140	}
141
142	/**
143	* Returns Admin class instance
144	*
145	* @return WP_Optimize_Admin
146	*/
147	public function get_admin_instance() {
148	return WP_Optimize_Admin::instance();
149	}
150
151	/**
152	* Detect when an active plugin or theme is updated, and trigger an action
153	*
154	* @param object $upgrader_object
155	* @param array $options
156	* @return void
157	*/
158	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
159	if (empty($options) \|\| !isset($options['type'])) return;
160
161	$should_purge_cache = false;
162	$skin = $upgrader_object->skin;
163	if ('plugin' === $options['type']) {
164	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
165	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
166	$should_purge_cache = true;
167	}
168	} elseif ('theme' === $options['type']) {
169	$active_theme = get_stylesheet();
170	$parent_theme = get_template();
171	// A theme is updated using the upload system
172	if (isset($options['action']) && 'install' === $options['action'] && 'update-theme' === $skin->options['overwrite']) {
173	$updated_theme = $upgrader_object->result['destination_name'];
174	// Check if the theme is in use
175	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
176	$should_purge_cache = true;
177	}
178	// A theme is updated using the classic update system
179	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
180	// Check if the theme is in use
181	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
182	$should_purge_cache = true;
183	}
184	}
185	}
186
187	/**
188	* Action executed when an active theme or plugin was updated
189	*/
190	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
191
192	}
193
194	/**
195	* Sets a flag to indicate an import action is done, if needed
196	*/
197	public function maybe_schedule_update_record_count_event() {
198	if (!wp_next_scheduled('wpo_update_record_count_event')) {
199	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
200	}
201	}
202
203	public function admin_page_wpo_images_smush() {
204	$options = Updraft_Smush_Manager()->get_smush_options();
205	$custom = 100 != $options['image_quality'] && 60 != $options['image_quality'] ? true : false;
206	$sites = WP_Optimize()->get_sites();
207	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion()));
208	}
209
210	public static function instance() {
211	if (empty(self::$_instance)) {
212	self::$_instance = new self();
213	}
214	return self::$_instance;
215	}
216
217	public function get_optimizer() {
218	return WP_Optimizer::instance();
219	}
220
221	/**
222	* Get and instanciate WP_Optimize_Minify
223	*
224	* @return WP_Optimize_Minify
225	*/
226	public function get_minify() {
227	return WP_Optimize_Minify::instance();
228	}
229
230	public function get_options() {
231	return WP_Optimize_Options::instance();
232	}
233
234	public function get_notices() {
235	return WP_Optimize_Notices::instance();
236	}
237
238	/**
239	* Returns instance if WPO_Page_Cache class.
240	*
241	* @return WPO_Page_Cache
242	*/
243	public function get_page_cache() {
244	return WPO_Page_Cache::instance();
245	}
246
247	/**
248	* Returns instance if WP_Optimize_WebP class.
249	*
250	* @return WP_Optimize_WebP
251	*/
252	public function get_webp_instance() {
253	return WP_Optimize_WebP::get_instance();
254	}
255
256	/**
257	* Detects if the platform is Kinsta or not
258	*
259	* @return bool Returns true if it is Kinsta platform, otherwise returns false
260	*/
261	private function is_kinsta() {
262	return isset($_SERVER['KINSTA_CACHE_ZONE']);
263	}
264
265	/**
266	* Detects whether the server handles cache. eg. Nginx cache
267	*/
268	public function does_server_handles_cache() {
269	return $this->is_kinsta();
270	}
271
272	/**
273	* Detects whether the server supports table optimization.
274	*
275	* Some servers prevent table optimization
276	* because InnoDB engine does not optimize table
277	* instead it drops tables and recreate them
278	* which results in elevated disk write operations
279	*/
280	public function does_server_allows_table_optimization() {
281	return !$this->is_kinsta();
282	}
283
284	/**
285	* Detects whether the server supports local webp conversion tools
286	*/
287	private function does_server_allows_local_webp_conversion() {
288	return !$this->is_kinsta();
289	}
290
291	/**
292	* Create instance of WP_Optimize_Browser_Cache.
293	*
294	* @return WP_Optimize_Browser_Cache
295	*/
296	public function get_browser_cache() {
297	return WP_Optimize_Browser_Cache::instance();
298	}
299
300	/**
301	* Returns WP_Optimize_Database_Information instance.
302	*
303	* @return WP_Optimize_Database_Information
304	*/
305	public function get_db_info() {
306	return WP_Optimize_Database_Information::instance();
307	}
308
309	/**
310	* Returns instance of WP_Optimize_Gzip_Compression.
311	*
312	* @return WP_Optimize_Gzip_Compression
313	*/
314	public function get_gzip_compression() {
315	return WP_Optimize_Gzip_Compression::instance();
316	}
317
318	/**
319	* Create instance of WP_Optimize_Htaccess.
320	*
321	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
322	* @return WP_Optimize_Htaccess
323	*/
324	public static function get_htaccess($htaccess_file = '') {
325	return new WP_Optimize_Htaccess($htaccess_file);
326	}
327
328	/**
329	* Return instance of Updraft_Logger
330	*
331	* @return Updraft_Logger
332	*/
333	public function get_logger() {
334	return Updraft_Logger::instance();
335	}
336
337	/**
338	* Check if the current page belongs to WP-Optimize.
339	*
340	* @return bool
341	*/
342	public function is_wpo_page() {
343	$current_screen = get_current_screen();
344
345	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
346	}
347
348	/**
349	* Enqueue scripts and styles on WP-Optimize pages.
350	*/
351	public function admin_enqueue_scripts() {
352	$enqueue_version = $this->get_enqueue_version();
353	$min_or_not = $this->get_min_or_not_string();
354	$min_or_not_internal = $this->get_min_or_not_internal_string();
355
356	// Register or enqueue common scripts
357	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
358	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
359	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
360
361	// load scripts and styles only on WP-Optimize pages.
362	if (!$this->is_wpo_page()) return;
363
364	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
365
366	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
367	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
368	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js'), $enqueue_version);
369	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js'), $enqueue_version);
370	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
371	// Using tablesorter to help with organising the DB size on Table Information
372	// https://github.com/Mottie/tablesorter
373	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
374
375	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
376
377	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
378
379	$js_variables = $this->wpo_js_translations();
380	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
381
382	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
383
384	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
385	}
386
387	/**
388	* Enqueue any required front-end scripts
389	*
390	* @return void
391	*/
392	public function frontend_enqueue_scripts() {
393	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
394	$enqueue_version = $this->get_enqueue_version();
395	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
396
397	// Register or enqueue common scripts
398	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
399	}
400
401	/**
402	* Load Task Manager
403	*/
404	public function get_task_manager() {
405	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
406
407	Updraft_Tasks_Activation::check_updates();
408
409	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
410	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
411	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
412
413	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-updraft-smush-task.php');
414	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-updraft-smush-manager.php');
415
416	return Updraft_Smush_Manager();
417	}
418
419	/**
420	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
421	*
422	* @returns Boolean
423	*/
424	public static function is_premium() {
425	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
426	$wp_optimize_premium = WP_Optimize_Premium();
427	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
428	}
429	return false;
430	}
431
432	/**
433	* 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.
434	*
435	* @return bool
436	*/
437	public function is_apache_server() {
438	global $is_apache;
439	return $is_apache;
440	}
441
442	/**
443	* Check if script running on IIS web server.
444	*
445	* @return bool
446	*/
447	public function is_IIS_server() {
448	global $is_IIS, $is_iis7;
449	return $is_IIS \|\| $is_iis7;
450	}
451
452	/**
453	* Check if Apache module or modules active.
454	*
455	* @param string\|array $module - single Apache module name or list of Apache module names.
456	*
457	* @return bool\|null - if null, the result was indeterminate
458	*/
459	public function is_apache_module_loaded($module) {
460	if (!$this->is_apache_server()) return false;
461
462	if (!function_exists('apache_get_modules')) return null;
463
464	$module_loaded = true;
465
466	if (is_array($module)) {
467	foreach ($module as $single_module) {
468	if (!in_array($single_module, apache_get_modules())) {
469	$module_loaded = false;
470	break;
471	}
472	}
473	} else {
474	$module_loaded = in_array($module, apache_get_modules());
475	}
476
477	return $module_loaded;
478	}
479
480	/**
481	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
482	*/
483	public function plugins_loaded() {
484
485	if ($this->does_server_handles_cache()) {
486	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
487
488	// If newly migrated to server that handles cache, disable wpo cache
489	$cache = $this->get_page_cache();
490	if ($cache->is_enabled()) {
491	$cache->disable();
492	}
493	}
494
495	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
496
497	// Run Premium loader if it exists
498	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
499	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
500	}
501
502	// load defaults
503	WP_Optimize()->get_options()->set_default_options();
504
505	// Initialize loggers.
506	$this->setup_loggers();
507
508	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
509	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
510	deactivate_plugins($free_plugin);
511
512	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
513	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
514	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
515
516	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
517	file_put_contents($advanced_cache_filename, '');
518	}
519	}
520
521	// Registers the notice letting the user know it cannot be active if premium is active.
522	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
523	return;
524	}
525
526	// Loads the task manager
527	$this->get_task_manager();
528
529	// Loads the language file.
530	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
531
532	// Load page cache.
533	$this->get_page_cache();
534	$this->init_page_cache();
535
536	// Include minify
537	$this->get_minify();
538	$this->run_updates();
539
540	// Include WebP
541	if (WP_Optimize_WebP::is_shell_functions_available() && WPO_USE_WEBP_CONVERSION) {
542	$this->get_webp_instance();
543	}
544	}
545
546	/**
547	* Filter cache tabs (when it is Kinsta)
548	*
549	* @param array $tabs An array of tabs
550	*
551	* @return array $tabs An array of tabs
552	*/
553	public function filter_cache_tabs($tabs) {
554	unset($tabs['preload']);
555	unset($tabs['advanced']);
556	unset($tabs['gzip']);
557	unset($tabs['settings']);
558	return $tabs;
559	}
560
561	/**
562	* Check whether one of free/Premium is active (whether it is this instance or not)
563	*
564	* @param String $which - 'free' or 'premium'
565	*
566	* @return String\|Boolean - plugin path (if installed) or false if not
567	*/
568	private function is_active($which = 'free') {
569	$active_plugins = $this->get_active_plugins();
570	foreach ($active_plugins as $file) {
571	if ('wp-optimize.php' == basename($file)) {
572	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
573	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
574	}
575	}
576	return false;
577	}
578
579	/**
580	* Gets an array of plugins active on either the current site, or site-wide
581	*
582	* @return Array - a list of plugin paths (relative to the plugin directory)
583	*/
584	private function get_active_plugins() {
585
586	// Gets all active plugins on the current site
587	$active_plugins = get_option('active_plugins');
588
589	if (is_multisite()) {
590	$network_active_plugins = get_site_option('active_sitewide_plugins');
591	if (!empty($network_active_plugins)) {
592	$network_active_plugins = array_keys($network_active_plugins);
593	$active_plugins = array_merge($active_plugins, $network_active_plugins);
594	}
595	}
596
597	return $active_plugins;
598	}
599
600	/**
601	* This function checks whether a specific plugin is installed, and returns information about it
602	*
603	* @param string $name Specify "Plugin Name" to return details about it.
604	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
605	*/
606	public function is_installed($name) {
607
608	// Needed to have the 'get_plugins()' function
609	include_once(ABSPATH.'wp-admin/includes/plugin.php');
610
611	// Gets all plugins available
612	$get_plugins = get_plugins();
613
614	$active_plugins = $this->get_active_plugins();
615
616	$plugin_info = array();
617	$plugin_info['installed'] = false;
618	$plugin_info['active'] = false;
619
620	// Loops around each plugin available.
621	foreach ($get_plugins as $key => $value) {
622	// If the plugin name matches that of the specified name, it will gather details.
623	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
624	$plugin_info['installed'] = true;
625	$plugin_info['name'] = $key;
626	$plugin_info['version'] = $value['Version'];
627	if (in_array($key, $active_plugins)) {
628	$plugin_info['active'] = true;
629	}
630	break;
631	}
632	return $plugin_info;
633	}
634
635	/**
636	* This is a notice to show users that premium is installed
637	*/
638	public function show_admin_notice_premium() {
639	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
640	if (isset($_GET['activate'])) unset($_GET['activate']);
641	}
642
643	/**
644	* Show update to Premium notice for non-premium multisite.
645	*/
646	public function show_multisite_update_to_premium_notice() {
647	if (!is_multisite() \|\| self::is_premium()) return;
648
649	echo '<p><a href="'.$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>';
650	}
651
652	public function admin_init() {
653	$pagenow = $GLOBALS['pagenow'];
654
655	$this->register_template_directories();
656
657	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
658	$options = $this->get_options();
659
660	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
661
662	if (file_exists(WPO_PLUGIN_MAIN_PATH . '/index.html')) {
663	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . '/index.html');
664	$installed_for = (time() - $installed);
665	}
666
667	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
668	add_action('all_admin_notices', array($this, 'show_admin_notice_upgradead'));
669	}
670	}
671	$this->install_or_update_notice = $this->get_install_or_update_notice();
672	if ($this->is_wp_smush_installed()) {
673	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
674	}
675	}
676
677	/**
678	* Checks whether the WP Smush plugin is active or not
679	*
680	* @return bool
681	*/
682	private function is_wp_smush_installed() {
683	return is_plugin_active('wp-smushit/wp-smush.php');
684	}
685
686	/**
687	* Remove WPO plugin name from WP Smushit transient value
688	*
689	* @return array $active_plugins
690	*/
691	public function modify_wp_smush_conflict_check($active_plugins) {
692	// This can be boolean value since it is return value of get_transient
693	if (!is_array($active_plugins)) return $active_plugins;
694
695	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
696	unset($active_plugins[$key]);
697	}
698	return $active_plugins;
699	}
700
701	/**
702	* Get the install or update notice instance
703	*
704	* @return WP_Optimize_Install_Or_Update_Notice
705	*/
706	public function get_install_or_update_notice() {
707	static $instance = null;
708	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
709	$instance = new WP_Optimize_Install_Or_Update_Notice();
710	return $instance;
711	}
712
713	public function show_admin_notice_upgradead() {
714	$this->include_template('notices/thanks-for-using-main-dash.php');
715	}
716
717	public function capability_required() {
718	return apply_filters('wp_optimize_capability_required', 'manage_options');
719	}
720
721	/**
722	* Returns array of translations used in javascript code.
723	*
724	* @return array
725	*/
726	public function wpo_js_translations() {
727	return apply_filters('wpo_js_translations', array(
728	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
729	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
730	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
731	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
732	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
733	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
734	'table_optimization_timeout' => 120000,
735	'cancel' => __('Cancel', 'wp-optimize'),
736	'cancelling' => __('Cancelling...', 'wp-optimize'),
737	'enable' => __('Enable', 'wp-optimize'),
738	'disable' => __('Disable', 'wp-optimize'),
739	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
740	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
741	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
742	'table_was_not_repaired' => __('%s was not repaired. For more details, please check the logs (configured in your logging destinations settings).', 'wp-optimize'),
743	'table_was_not_deleted' => __('%s was not deleted. For more details, please check your logs configured in logging destinations settings.', 'wp-optimize'),
744	'table_was_not_converted' => __('%s was not converted to InnoDB. For more details, please check your logs configured in logging destinations settings.', 'wp-optimize'),
745	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
746	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
747	'update' => __('Update', 'wp-optimize'),
748	'run_now' => __('Run now', 'wp-optimize'),
749	'starting_preload' => __('Started preload...', 'wp-optimize'),
750	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
751	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
752	'number_of_files' => __('Number of files:', 'wp-optimize'),
753	'toggle_info' => __('Show information', 'wp-optimize'),
754	'delete_file' => __('Delete', 'wp-optimize'),
755	'added_to_list' => __('Added to the list', 'wp-optimize'),
756	'added_notice' => __('The file was added to the list', 'wp-optimize'),
757	'save_notice' => __('Save the changes', 'wp-optimize'),
758	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
759	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
760	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
761	'loading_data' => __('Loading data...', 'wp-optimize'),
762	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
763	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
764	'sites' => $this->get_sites(),
765	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
766	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
767	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
768	'network_site_url' => network_site_url(),
769	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
770	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
771	'import_invalid_json_file' => __('Error: The chosen file is corrupt. Please choose a valid WP-Optimize export file.', 'wp-optimize'),
772	'importing' => __('Importing...', 'wp-optimize'),
773	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
774	'exported_on' => __('Which was exported on:', 'wp-optimize'),
775	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
776
777	));
778	}
779
780	/**
781	* Manages the admin bar menu for caching (currently page and minify)
782	*/
783	public function cache_admin_bar($wp_admin_bar) {
784
785	$options = $this->get_options();
786	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
787
788	/**
789	* The "purge cache" menu items
790	*
791	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
792	* @param object $wp_admin_bar
793	*/
794	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
795
796	if (empty($menu_items) \|\| !is_array($menu_items)) return;
797
798	$wp_admin_bar->add_menu(array(
799	'id' => 'wpo_purge_cache',
800	'title' => __('Purge cache', 'wp-optimize'),
801	'href' => '#',
802	'meta' => array(
803	'title' => __('Purge cache', 'wp-optimize'),
804	),
805	'parent' => false,
806	));
807
808	foreach ($menu_items as $item) {
809	$wp_admin_bar->add_menu($item);
810	}
811	}
812
813	/**
814	* Add settings link on plugin page
815	*
816	* @param string $links Passing through the URL to be used within the HREF.
817	* @return string Returns the Links.
818	*/
819	public function plugin_settings_link($links) {
820
821	$admin_page_url = $this->get_options()->admin_page_url();
822	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
823
824	if (false == self::is_premium()) {
825	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
826	array_unshift($links, $premium_link);
827	}
828
829	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
830	array_unshift($links, $settings_link);
831
832	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
833	array_unshift($links, $optimize_link);
834	return $links;
835	}
836
837	/**
838	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
839	*
840	* @param string $content String for output to column
841	* @param object $table_info Object with table info.
842	*
843	* @return string
844	*/
845	public function tables_list_additional_column_data($content, $table_info) {
846	if ($table_info->is_needing_repair) {
847	$content .= '<div class="wpo_button_wrap">'
848	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
849	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
850	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
851	. '</div>';
852	}
853
854	// table belongs to plugin.
855	if ($table_info->can_be_removed) {
856	$content .= '<div>'
857	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
858	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
859	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
860	. '</div>';
861	}
862
863	// Add option for MyISAM to InnoDB conversion.
864	if ('MyISAM' == $table_info->Engine) {
865	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
866	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
867	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
868	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
869	. '</div>';
870
871	}
872
873	return $content;
874	}
875
876	/**
877	* Initialize WP-Optimize page cache.
878	*/
879	public function init_page_cache() {
880	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
881	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
882	$this->get_page_cache()->enable();
883	}
884	}
885	}
886
887	/**
888	* Schedules cron event based on selected schedule type
889	*
890	* @return void
891	*/
892	public function cron_activate() {
893	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
894
895	$options = $this->get_options();
896
897	if ($options->get_option('schedule') === false) {
898	$options->set_default_options();
899	} else {
900	if ('true' == $options->get_option('schedule')) {
901	if (!wp_next_scheduled('wpo_cron_event2')) {
902	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
903
904	// Backward compatibility
905	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
906
907	$this_time = (86400 * 7);
908
909	switch ($schedule_type) {
910	case "wpo_daily":
911	$this_time = 86400;
912	break;
913
914	case "wpo_weekly":
915	$this_time = (86400 * 7);
916	break;
917
918	case "wpo_fortnightly":
919	$this_time = (86400 * 14);
920	break;
921
922	case "wpo_monthly":
923	$this_time = (86400 * 30);
924	break;
925	}
926
927	add_action('wpo_cron_event2', array($this, 'cron_action'));
928	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
929	WP_Optimize()->log('running wp_schedule_event()');
930	if (is_wp_error($result)) {
931	$error_msg = $result->get_error_message();
932	WP_Optimize()->log($error_msg);
933	WP_Optimize()->log(print_r($result, true));
934	} else {
935	WP_Optimize()->log($result);
936	}
937	}
938	}
939	}
940	}
941
942	/**
943	* Clears all cron events
944	*
945	* @return void
946	*/
947	public function wpo_cron_deactivate() {
948	$cron_jobs = _get_cron_array();
949	foreach ($cron_jobs as $job) {
950	foreach (array_keys($job) as $hook) {
951	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
952	}
953	}
954	}
955
956	/**
957	* Scheduler public functions to update schedulers
958	*
959	* @param array $schedules An array of schedules being passed.
960	* @return array An array of schedules being returned.
961	*/
962	public function cron_schedules($schedules) {
963	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
964	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
965	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
966	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
967	return $schedules;
968	}
969
970	/**
971	* Returns count of overdue cron jobs.
972	*
973	* @return integer
974	*/
975	public function howmany_overdue_crons() {
976	$how_many_overdue = 0;
977	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
978	$crons = _get_cron_array();
979	if (is_array($crons)) {
980	$timenow = time();
981	foreach ($crons as $jt => $job) {
982	if ($jt < $timenow) {
983	$how_many_overdue++;
984	}
985	}
986	}
987	}
988	return $how_many_overdue;
989	}
990
991	/**
992	* Run updates on plugin activation.
993	*/
994	public function run_updates() {
995	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
996	WP_Optimize_Updates::check_updates();
997	}
998
999	/**
1000	* Returns warning about overdue crons.
1001	*
1002	* @param int $howmany count of overdue crons
1003	* @return string
1004	*/
1005	public function show_admin_warning_overdue_crons($howmany) {
1006	$ret = '<div class="updated below-h2"><p>';
1007	$ret .= '<strong>'.__('Warning', 'wp-optimize').':</strong> '.sprintf(__('WordPress has a number (%d) of scheduled tasks which are overdue. Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize'), $howmany).' <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>';
1008	$ret .= '</p></div>';
1009	return $ret;
1010	}
1011
1012	private function wp_normalize_path($path) {
1013	// Wp_normalize_path is not present before WP 3.9.
1014	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1015	// Taken from WP 4.6.
1016	$path = str_replace('\\', '/', $path);
1017	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1018	if (':' === substr($path, 1, 1)) {
1019	$path = ucfirst($path);
1020	}
1021	return $path;
1022	}
1023
1024	public function get_templates_dir() {
1025	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1026	}
1027
1028	public function get_templates_url() {
1029	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'/templates');
1030	}
1031
1032	/**
1033	* Return or output view content
1034	*
1035	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1036	* @param Boolean $return_instead_of_echo - what to do with the results
1037	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1038	*
1039	* @return String\|Void
1040	*/
1041	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1042	if ($return_instead_of_echo) ob_start();
1043
1044	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1045	$prefix = $matches[1];
1046	$suffix = $matches[2];
1047	if (isset($this->template_directories[$prefix])) {
1048	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1049	}
1050	}
1051
1052	if (!isset($template_file)) {
1053	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1054	}
1055
1056	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1057
1058	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1059
1060	if (!file_exists($template_file)) {
1061	error_log("WP Optimize: template not found: ".$template_file);
1062	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1063	} else {
1064	extract($extract_these);
1065	// The following are useful variables which can be used in the template.
1066	// They appear as unused, but may be used in the $template_file.
1067	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1068	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1069	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1070	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1071	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1072	include $template_file;
1073	}
1074
1075	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1076
1077	if ($return_instead_of_echo) return ob_get_clean();
1078	}
1079
1080	/**
1081	* Build a list of template directories (stored in self::$template_directories)
1082	*/
1083	private function register_template_directories() {
1084
1085	$template_directories = array();
1086
1087	$templates_dir = $this->get_templates_dir();
1088
1089	if ($dh = opendir($templates_dir)) {
1090	while (($file = readdir($dh)) !== false) {
1091	if ('.' == $file \|\| '..' == $file) continue;
1092	if (is_dir($templates_dir.'/'.$file)) {
1093	$template_directories[$file] = $templates_dir.'/'.$file;
1094	}
1095	}
1096	closedir($dh);
1097	}
1098
1099	// Optimal hook for most extensions to hook into.
1100	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1101
1102	}
1103
1104	/**
1105	* Message to debug
1106	*
1107	* @param string $message Message to insert into the log.
1108	* @param array $context array with variables used in $message like in template,
1109	* for ex.
1110	* $message = 'Hello {message}';
1111	* $context = ['message' => 'world']
1112	* 'Hello world' string will be saved in log.
1113	*/
1114	public function log($message, $context = array()) {
1115	$this->get_logger()->debug($message, $context);
1116	}
1117
1118	/**
1119	* Format Bytes Into KB/MB
1120	*
1121	* @param mixed $bytes Number of bytes to be converted.
1122	* @param integer $decimals the number of decimal digits
1123	* @return integer return the correct format size.
1124	*/
1125	public function format_size($bytes, $decimals = 2) {
1126	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1127
1128	if (1073741824 <= $bytes) {
1129	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1130	} elseif (1048576 <= $bytes) {
1131	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1132	} elseif (1024 <= $bytes) {
1133	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1134	} elseif (1 < $bytes) {
1135	$bytes = $bytes . ' bytes';
1136	} elseif (1 == $bytes) {
1137	$bytes = $bytes . ' byte';
1138	} else {
1139	$bytes = '0 bytes';
1140	}
1141
1142	return $bytes;
1143	}
1144
1145	/**
1146	* Format a timestamp into a juman readable date time
1147	*
1148	* @param int $timestamp
1149	* @return string
1150	*/
1151	public function format_date_time($timestamp) {
1152	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1153	}
1154
1155	/**
1156	* Executed this function on cron event.
1157	*
1158	* @return void
1159	*/
1160	public function cron_action() {
1161
1162	$optimizer = $this->get_optimizer();
1163	$options = $this->get_options();
1164
1165	$this->log('WPO: Starting cron_action()');
1166	$options->update_option('last-optimized', time());
1167	if ('true' == $options->get_option('schedule')) {
1168	$this_options = $options->get_option('auto');
1169
1170	// Currently the output of the optimizations is not saved/used/logged.
1171	$optimizer->do_optimizations($this_options, 'auto');
1172	}
1173
1174	}
1175
1176	/**
1177	* Schedule cron tasks used by plugin.
1178	*
1179	* @return void
1180	*/
1181	public function schedule_plugin_cron_tasks() {
1182	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1183	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1184	}
1185
1186	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1187	}
1188
1189	/**
1190	* Do plugin background tasks.
1191	*
1192	* @return void
1193	*/
1194	public function do_weekly_cron_tasks() {
1195	// add tasks here.
1196	$this->get_db_info()->update_plugin_json();
1197	}
1198
1199	/**
1200	* This will customize a URL with a correct Affiliate link
1201	* This function can be update to suit any URL as longs as the URL is passed
1202	*
1203	* @param String $url - URL to be check to see if it an updraftplus match.
1204	* @param String $text - Text to be entered within the href a tags.
1205	* @param String $html - Any specific HTML to be added.
1206	* @param String $class - Specify a class for the href (including the attribute label)
1207	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1208	*
1209	* @return String\|void
1210	*/
1211	public function wp_optimize_url($url, $text, $html = '', $class = '', $return_instead_of_echo = false) {
1212	// Check if the URL is UpdraftPlus.
1213	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1214	if ('' != $html) {
1215	$result = '<a '.$class.' href="'.esc_attr($url).'">'.$html.'</a>';
1216	} else {
1217	$result = '<a '.$class.' href="'.esc_attr($url).'">'.htmlspecialchars($text).'</a>';
1218	}
1219	if ($return_instead_of_echo) return $result;
1220	echo $result;
1221	}
1222
1223	/**
1224	* Get an URL with an eventual affiliate ID
1225	*
1226	* @param string $url
1227	* @return string
1228	*/
1229	public function maybe_add_affiliate_params($url) {
1230	// Check if the URL is UpdraftPlus.
1231	if (false !== strpos($url, '//updraftplus.com')) {
1232	// Set URL with Affiliate ID.
1233	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1234
1235	// Apply filters.
1236	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1237	}
1238	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1239	}
1240
1241	/**
1242	* Setup WPO logger(s)
1243	*/
1244	public function setup_loggers() {
1245
1246	$logger = $this->get_logger();
1247	$loggers = $this->wpo_loggers();
1248
1249	if (!empty($loggers)) {
1250	foreach ($loggers as $_logger) {
1251	$logger->add_logger($_logger);
1252	}
1253	}
1254
1255	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1256	}
1257
1258	/**
1259	* Run logger actions after all optimizations done
1260	*/
1261	public function after_optimizations_logger_action() {
1262	$loggers = $this->get_logger()->get_loggers();
1263	if (!empty($loggers)) {
1264	foreach ($loggers as $logger) {
1265	if (is_a($logger, 'Updraft_Email_Logger')) {
1266	$logger->flush_log();
1267	}
1268	}
1269	}
1270	}
1271
1272	/**
1273	* Returns list of WPO loggers instances
1274	* Apply filter wp_optimize_loggers
1275	*
1276	* @return array
1277	*/
1278	public function wpo_loggers() {
1279
1280	$loggers = array();
1281	$loggers_classes_by_id = array();
1282	$options_keys = array();
1283
1284	$loggers_classes = $this->get_loggers_classes();
1285
1286	foreach ($loggers_classes as $logger_class => $source) {
1287	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1288	}
1289
1290	$options = $this->get_options();
1291
1292	$saved_loggers = $options->get_option('logging');
1293	$logger_additional_options = $options->get_option('logging-additional');
1294
1295	// create loggers classes instances.
1296	if (!empty($saved_loggers)) {
1297	// check for previous version options format.
1298	$keys = array_keys($saved_loggers);
1299
1300	// if options stored in old format then reformat it.
1301	if (false == is_numeric($keys[0])) {
1302	$_saved_loggers = array();
1303	foreach ($saved_loggers as $logger_id => $enabled) {
1304	if ($enabled) {
1305	$_saved_loggers[] = $logger_id;
1306	}
1307	}
1308
1309	// fill email with admin.
1310	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1311	$logger_additional_options['updraft_email_logger'] = array(
1312	get_option('admin_email')
1313	);
1314	}
1315
1316	$saved_loggers = $_saved_loggers;
1317	}
1318
1319	foreach ($saved_loggers as $i => $logger_id) {
1320
1321	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1322
1323	$logger_class = $loggers_classes_by_id[$logger_id];
1324
1325	$logger = new $logger_class();
1326
1327	$logger_options = $logger->get_options_list();
1328
1329	if (!empty($logger_options)) {
1330	foreach (array_keys($logger_options) as $option_name) {
1331	if (array_key_exists($option_name, $options_keys)) {
1332	$options_keys[$option_name]++;
1333	} else {
1334	$options_keys[$option_name] = 0;
1335	}
1336
1337	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1338
1339	// if options in old format then get correct value.
1340	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1341	$option_value = array_shift($logger_additional_options[$logger_id]);
1342	}
1343
1344	$logger->set_option($option_name, $option_value);
1345	}
1346	}
1347
1348	// check if logger is active.
1349	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1350
1351	if ($active) {
1352	$logger->enable();
1353	} else {
1354	$logger->disable();
1355	}
1356
1357	$loggers[] = $logger;
1358	}
1359	}
1360
1361	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1362
1363	return $loggers;
1364	}
1365
1366	/**
1367	* Returns associative array with logger class name in a key and path to class file in a value.
1368	*
1369	* @return array
1370	*/
1371	public function get_loggers_classes() {
1372	$loggers_classes = array(
1373	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1374	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1375	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1376	);
1377
1378	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1379
1380	if (!empty($loggers_classes)) {
1381	foreach ($loggers_classes as $logger_class => $logger_file) {
1382	if (!class_exists($logger_class)) {
1383	if (is_file($logger_file)) {
1384	include_once($logger_file);
1385	}
1386	}
1387	}
1388	}
1389
1390	return $loggers_classes;
1391	}
1392
1393	/**
1394	* Returns information about all loggers classes.
1395	*
1396	* @return array
1397	*/
1398	public function get_loggers_classes_info() {
1399	$loggers_classes = $this->get_loggers_classes();
1400
1401	$loggers_classes_info = array();
1402
1403	if (!empty($loggers_classes)) {
1404	foreach (array_keys($loggers_classes) as $logger_class_name) {
1405
1406	if (!class_exists($logger_class_name)) continue;
1407
1408	$logger_id = strtolower($logger_class_name);
1409	$logger_class = new $logger_class_name();
1410
1411	$loggers_classes_info[$logger_id] = array(
1412	'description' => $logger_class->get_description(),
1413	'available' => $logger_class->is_available(),
1414	'allow_multiple' => $logger_class->is_allow_multiple(),
1415	'options' => $logger_class->get_options_list()
1416	);
1417	}
1418	}
1419
1420	return $loggers_classes_info;
1421	}
1422
1423	/**
1424	* Returns true if optimization works in multisite mode
1425	*
1426	* @return boolean
1427	*/
1428	public function is_multisite_mode() {
1429	return (is_multisite() && self::is_premium());
1430	}
1431
1432	/**
1433	* Returns true if current user can run optimizations.
1434	*
1435	* @return bool
1436	*/
1437	public function can_run_optimizations() {
1438	// we don't check permissions for cron jobs.
1439	if (defined('DOING_CRON') && DOING_CRON) return true;
1440
1441	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1442	return true;
1443	}
1444
1445	/**
1446	* Returns true if current user can manage plugin options.
1447	*
1448	* @return bool
1449	*/
1450	public function can_manage_options() {
1451	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1452	return true;
1453	}
1454
1455	/**
1456	* Returns list of all sites in multisite
1457	*
1458	* @return array
1459	*/
1460	public function get_sites() {
1461	$sites = array();
1462	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1463	if (function_exists('get_sites')) {
1464	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1465	} elseif (function_exists('wp_get_sites')) {
1466	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1467	}
1468	return $sites;
1469	}
1470
1471	/**
1472	* Returns script memory limit in megabytes.
1473	*
1474	* @param bool $memory_limit
1475	* @return int
1476	*/
1477	public function get_memory_limit($memory_limit = false) {
1478	// Returns in megabytes
1479	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1480	$memory_limit = rtrim($memory_limit);
1481
1482	return $this->return_bytes($memory_limit);
1483	}
1484
1485	/**
1486	* Returns free memory in bytes.
1487	*
1488	* @return int
1489	*/
1490	public function get_free_memory() {
1491	return $this->get_memory_limit() - memory_get_usage();
1492	}
1493
1494	/**
1495	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1496	*
1497	* @return int memory limit in bytes.
1498	*/
1499	public function get_script_memory_limit() {
1500	$memory_limit = $this->get_memory_limit();
1501
1502	if (defined('WP_MAX_MEMORY_LIMIT')) {
1503	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1504
1505	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1506	$memory_limit = $wp_memory_limit;
1507	}
1508	}
1509
1510	return $memory_limit;
1511	}
1512
1513	/**
1514	* Returns max packet size for database.
1515	*
1516	* @return int\|string
1517	*/
1518	public function get_max_packet_size() {
1519	global $wpdb;
1520	static $mp = 0;
1521
1522	if ($mp > 0) return $mp;
1523
1524	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1525	// Default to 1MB
1526	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1527	// 32MB
1528	if ($mp < 33554432) {
1529	$save = $wpdb->show_errors(false);
1530	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
1531	$wpdb->show_errors($save);
1532
1533	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1534	// Default to 1MB
1535	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1536	}
1537
1538	return $mp;
1539	}
1540
1541	/**
1542	* Converts shorthand memory notation value to bytes.
1543	* From http://php.net/manual/en/function.ini-get.php
1544	*
1545	* @param string $val shorthand memory notation value.
1546	*/
1547	public function return_bytes($val) {
1548	$val = trim($val);
1549	$last = strtolower($val[strlen($val)-1]);
1550	$val = (int) $val;
1551	switch ($last) {
1552	case 'g':
1553	$val *= 1024;
1554	// no break
1555	case 'm':
1556	$val *= 1024;
1557	// no break
1558	case 'k':
1559	$val *= 1024;
1560	}
1561
1562	return $val;
1563	}
1564
1565	/**
1566	* Log fatal errors to defined log destinations.
1567	*/
1568	public function log_fatal_errors() {
1569	$last_error = error_get_last();
1570
1571	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1572	$this->get_logger()->critical($last_error['message']);
1573	}
1574	}
1575
1576	/**
1577	* Close browser connection and continue script work. - Taken from UpdraftPlus
1578	*
1579	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1580	* @return void
1581	*/
1582	public function close_browser_connection($txt = '') {
1583	if (!headers_sent()) {
1584	// Close browser connection so that it can resume AJAX polling
1585	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1586	header('Connection: close');
1587	header('Content-Encoding: none');
1588	}
1589
1590	if (session_id()) session_write_close();
1591	echo "\r\n\r\n";
1592	echo $txt;
1593	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1594	$ob_level = ob_get_level();
1595	while ($ob_level > 0) {
1596	ob_end_flush();
1597	$ob_level--;
1598	}
1599	flush();
1600	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1601	}
1602
1603	/**
1604	* Get the current theme's style.css headers
1605	*
1606	* @return array\|WP_Error
1607	*/
1608	public function get_stylesheet_headers() {
1609	static $headers;
1610	if (isset($headers)) return $headers;
1611
1612	$style = get_template_directory_uri() . '/style.css';
1613
1614	/**
1615	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1616	*
1617	* @param array $request_params Default parameters
1618	*/
1619	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1620
1621	// trying to load style.css.
1622	$response = wp_remote_get($style, $request_params);
1623
1624	if (is_a($response, 'WP_Error')) return $response;
1625
1626	$headers = wp_remote_retrieve_headers($response);
1627
1628	if (is_a($headers, 'Requests_Utility_CaseInsensitiveDictionary')) {
1629	$headers = $headers->getAll();
1630	}
1631
1632	return $headers;
1633	}
1634
1635	/**
1636	* Try to change PHP script time limit.
1637	*/
1638	public function change_time_limit() {
1639	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1640
1641	// Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1642	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
1643	}
1644
1645	/**
1646	* Does the request come from UDC
1647	*
1648	* @return boolean
1649	*/
1650	public function is_updraft_central_request() {
1651	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1652	}
1653
1654	/**
1655	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1656	*
1657	* @return boolean
1658	*/
1659	public function template_should_include_data() {
1660	/**
1661	* Filters wether data should be included in certain templates or not.
1662	*/
1663	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1664	}
1665
1666	/**
1667	* Load the templates for the modal window
1668	*/
1669	public function load_modal_template() {
1670	$this->include_template('modal.php');
1671	}
1672
1673	/**
1674	* Delete transients and semaphores data from options table.
1675	*/
1676	public function delete_transients_and_semaphores() {
1677	global $wpdb;
1678
1679	$masks = array(
1680	'updraft_locked_wpo_%',
1681	'updraft_unlocked_wpo_%',
1682	'updraft_last_lock_time_wpo_%',
1683	'updraft_semaphore_wpo_%',
1684	'wpo_locked_%',
1685	'wpo_unlocked_%',
1686	'wpo_last_lock_time_%',
1687	'wpo_semaphore_%',
1688	'_transient_timeout_wpo_%',
1689	'_transient_wpo_%',
1690	'updraft_lock_wpo_%',
1691	);
1692
1693	$where_parts = array();
1694	foreach ($masks as $mask) {
1695	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1696	}
1697
1698	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1699	}
1700
1701	/**
1702	* Prevents bots from indexing plugins list
1703	*/
1704	public function robots_txt($output) {
1705	$upload_dir = wp_upload_dir();
1706	$path = parse_url($upload_dir['baseurl']);
1707	$output .= "\nUser-agent: *";
1708	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo-plugins-tables-list.json\n";
1709	return $output;
1710	}
1711
1712	/**
1713	* Returns desired enqueue version string
1714	*
1715	* @return string Enqueue version as string
1716	*/
1717	public function get_enqueue_version() {
1718	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1719	}
1720
1721	/**
1722	* Returns script suffix string
1723	*
1724	* @return string empty or `.min` suffix string
1725	*/
1726	public function get_min_or_not_string() {
1727	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1728	}
1729
1730	/**
1731	* Returns script suffix string with WPO_VERSION
1732	*
1733	* @return string empty or min suffix with wpo_version string
1734	*/
1735	public function get_min_or_not_internal_string() {
1736	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1737	}
1738
1739	/**
1740	* Instantiate Ajax handling class
1741	*/
1742	private function load_ajax_handler() {
1743	WPO_Ajax::get_instance();
1744	}
1745	}
1746
1747	/**
1748	* Plugin activation actions.
1749	*/
1750	function wpo_activation_actions() {
1751	// If plugin activated by not a Network Administrator then deactivate plugin and show message.
1752	if (is_multisite() && !is_network_admin()) {
1753	deactivate_plugins(plugin_basename(__FILE__));
1754	wp_die(__('Only Network Administrator can activate WP-Optimize plugin.', 'wp-optimize').
1755	' <a href="'.admin_url('plugins.php').'">'.__('go back', 'wp-optimize').'</a>');
1756	}
1757
1758	// On activation, check if last-optimized option exists. If not, add 'newly-activated' option.
1759	if (!WP_Optimize()->get_options()->get_option('last-optimized', false)) {
1760	WP_Optimize()->get_options()->update_option('newly-activated', true);
1761	}
1762
1763	WP_Optimize()->get_options()->set_default_options();
1764	WP_Optimize()->get_minify()->plugin_activate();
1765
1766	WP_Optimize()->get_gzip_compression()->restore();
1767	WP_Optimize()->get_browser_cache()->restore();
1768
1769	if (!class_exists('Updraft_Tasks_Activation')) require_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
1770	Updraft_Tasks_Activation::init_db();
1771	Updraft_Tasks_Activation::reinstall_if_needed();
1772
1773	// run premium activation actions.
1774	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php')) {
1775	if (!class_exists('WP_Optimize_Premium')) {
1776	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
1777	}
1778	WP_Optimize_Premium()->plugin_activation_actions();
1779	}
1780	}
1781
1782	/**
1783	* Plugin deactivation actions.
1784	*/
1785	function wpo_deactivation_actions() {
1786	WP_Optimize()->wpo_cron_deactivate();
1787	WP_Optimize()->get_page_cache()->disable();
1788	WP_Optimize()->get_minify()->plugin_deactivate();
1789	WP_Optimize()->get_gzip_compression()->disable();
1790	WP_Optimize()->get_browser_cache()->disable();
1791	WP_Optimize()->get_webp_instance()->empty_htaccess_file();
1792	}
1793
1794	function wpo_cron_deactivate() {
1795	WP_Optimize()->log('running wpo_cron_deactivate()');
1796	wp_clear_scheduled_hook('wpo_cron_event2');
1797	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1798	}
1799
1800	/**
1801	* Plugin uninstall actions.
1802	*/
1803	function wpo_uninstall_actions() {
1804	WP_Optimize()->get_gzip_compression()->disable();
1805	WP_Optimize()->get_browser_cache()->disable();
1806	WP_Optimize()->get_options()->delete_all_options();
1807	WP_Optimize()->get_minify()->plugin_uninstall();
1808	WP_Optimize()->get_options()->wipe_settings();
1809	WP_Optimize()->delete_transients_and_semaphores();
1810	}
1811
1812	function WP_Optimize() {
1813	return WP_Optimize::instance();
1814	}
1815
1816	endif;
1817
1818	$GLOBALS['wp_optimize'] = WP_Optimize();
1819