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Filename :
class-wpo-cache-config.php
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<?php if (!defined('ABSPATH')) die('No direct access allowed'); /** * Handles cache configuration and related I/O */ if (!class_exists('WPO_Cache_Config')) : class WPO_Cache_Config { /** * Defaults * * @var array */ public $defaults; /** * Instance of this class * * @var WPO_Cache_Config | null */ public static $instance; /** * @var array */ public $config; /** * Set config defaults */ public function __construct() { $this->defaults = $this->get_defaults(); } /** * Get config from file or cache * * @return array */ public function get() { if (is_multisite()) { $config = get_site_option('wpo_cache_config', $this->defaults); } else { $config = get_option('wpo_cache_config', $this->defaults); } return wp_parse_args($config, $this->defaults); } /** * Get a specific configuration option * * @param string $option_key The option identifier * @param mixed $default Default value if the option doesn't exist (Default to false) * @return mixed */ public function get_option($option_key, $default = false) { $options = $this->get(); return apply_filters("wpo_option_key_{$option_key}", ($options[$option_key] ?? $default)); } /** * Updates the given config object in file and DB * * @param array $config - the cache configuration * @param boolean $skip_disk_if_not_yet_present - only write the configuration file to disk if it already exists. This presents PHP notices if the cache has never been on, and settings are saved. * * @return true|WP_Error - returns true on success or WP_Error if the config cannot be written to disk */ public function update($config, $skip_disk_if_not_yet_present = false) { $config = wp_parse_args($config, $this->defaults); $config['page_cache_length_value'] = intval($config['page_cache_length_value']); $config['page_cache_length'] = $this->calculate_page_cache_length($config['page_cache_length_value'], $config['page_cache_length_unit']); $fields_to_trim = array('cache_exception_conditional_tags', 'cache_exception_urls', 'cache_ignore_query_variables', 'cache_exception_cookies', 'cache_exception_browser_agents'); foreach ($fields_to_trim as $field) { if (!empty($config[$field]) && is_array($config[$field])) { $config[$field] = array_map('trim', $config[$field]); } } /** * Filters the cookies used to set cache file names * * @param array $cookies - The cookies * @param array $config - The new config */ $wpo_cache_cookies = apply_filters('wpo_cache_cookies', array(), $config); sort($wpo_cache_cookies); /** * Filters the query variables used to set cache file names * * @param array $wpo_query_variables - The variables * @param array $config - The new config */ $wpo_query_variables = apply_filters('wpo_cache_query_variables', array(), $config); sort($wpo_query_variables); $config['wpo_cache_cookies'] = $wpo_cache_cookies; $config['wpo_cache_query_variables'] = $wpo_query_variables; $config = apply_filters('wpo_cache_update_config', $config); if (is_multisite()) { update_site_option('wpo_cache_config', $config); } else { update_option('wpo_cache_config', $config); } do_action('wpo_cache_config_updated', $config); return $this->write($config, $skip_disk_if_not_yet_present); } /** * Calculate cache expiration value in seconds. * * @param int $value * @param string $unit ( hours | days | months ) * * @return int */ private function calculate_page_cache_length($value, $unit) { $cache_length_units = array( 'hours' => 3600, 'days' => 86400, 'months' => 2629800, // 365.25 * 86400 / 12 ); return $value * $cache_length_units[$unit]; } /** * Deletes config files and options * * @return bool */ public function delete() { if (is_multisite()) { delete_site_option('wpo_cache_config'); } else { delete_option('wpo_cache_config'); } if (!WPO_Page_Cache::delete(WPO_CACHE_CONFIG_DIR)) { return false; } return true; } /** * Writes config to file * * @param array $config - Configuration array. * @param boolean $only_if_present - only writes to the disk if the configuration file already exists * * @return true|WP_Error - returns true on success or WP_Error if an attempt to write failed */ public function write($config, $only_if_present = false) { $config_file = $this->get_config_file_path(); $this->config = wp_parse_args($config, $this->defaults); // from 3.0.17 we use more secure way to store cache config files. $advanced_cache_version = WPO_Page_Cache::instance()->get_advanced_cache_version(); // if advanced-cache.php exists and has at least 3.0.17 version or // advanced-cache.php doesn't exist then // we write the cache config in a new format. if (($advanced_cache_version && (version_compare($advanced_cache_version, '3.0.17', '>='))) || !$advanced_cache_version) { // Apply the encoding required for placing within PHP single quotes - https://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.single $json_encoded_string = str_replace(array('\\', "'"), array('\\\\', '\\\''), wp_json_encode($this->config)); $config_content = '<?php' . "\n" . 'if (!defined(\'ABSPATH\')) die(\'No direct access allowed\');' . "\n\n" . '$GLOBALS[\'wpo_cache_config\'] = json_decode(\'' . $json_encoded_string . '\', true);' . "\n"; } else { $config_content = wp_json_encode($this->config); } if ((!$only_if_present || file_exists($config_file)) && (!wp_is_writable(WPO_CACHE_CONFIG_DIR) || !file_put_contents($config_file, $config_content))) { // If translations are already loaded, use the translated string if (is_textdomain_loaded('wp-optimize')) { /* translators: %s is the path to the cache config file */ $message = sprintf(__('The cache configuration file could not be saved to the disk; please check the file/folder permissions of %s .', 'wp-optimize'), $config_file); } else { // Fallback to plain English string to avoid triggering premature translation loading $message = sprintf('The cache configuration file could not be saved to the disk; please check the file/folder permissions of %s .', $config_file); } return new WP_Error('write_cache_config', $message); } return true; } /** * Get config file name with full path. * * @return string */ public function get_config_file_path() { return WPO_CACHE_CONFIG_DIR . '/' . $this->get_cache_config_filename(); } /** * Return defaults * * @return array */ public function get_defaults() { $defaults = array( 'enable_page_caching' => false, 'page_cache_length_value' => 24, 'page_cache_length_unit' => 'hours', 'page_cache_length' => 86400, 'cache_exception_conditional_tags' => array(), 'cache_specific_urls_only' => false, 'cache_include_urls' => array(), 'cache_exception_urls' => array(), 'cache_ignore_query_variables' => array(), 'cache_exception_cookies' => array(), 'cache_exception_browser_agents' => array(), 'enable_sitemap_preload' => false, 'enable_schedule_preload' => false, 'preload_schedule_type' => '', 'enable_mobile_caching' => false, 'enable_user_caching' => false, 'site_url' => network_home_url('/'), 'enable_cache_per_country' => false, 'enable_cache_aelia_currency' => false, 'permalink_structure' => get_option('permalink_structure'), 'uploads' => wp_normalize_path(wp_upload_dir()['basedir']), 'gmt_offset' => get_option('gmt_offset'), 'timezone_string' => get_option('timezone_string'), 'date_format' => get_option('date_format'), 'time_format' => get_option('time_format'), 'use_webp_images' => false, 'show_avatars' => 0, 'host_gravatars_locally' => 0, 'auto_preload_purged_contents' => true, 'enable_rest_caching' => false, ); return apply_filters('wpo_cache_defaults', $defaults); } /** * Get advanced-cache.php file name with full path. * * @return string */ public function get_cache_config_filename() { $url = wp_parse_url(network_site_url()); if (isset($url['port']) && '' !== (string) $url['port'] && 80 !== $url['port']) { return 'config-'.strtolower($url['host']).'-port'.$url['port'].'.php'; } else { return 'config-'.strtolower($url['host']).'.php'; } } /** * Return an instance of the current class, create one if it doesn't exist * * @since 1.0 * @return WPO_Cache_Config */ public static function instance() { if (!self::$instance) { self::$instance = new self(); } return self::$instance; } } endif;