883 lines
28 KiB
PHP
883 lines
28 KiB
PHP
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<?php
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defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
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class SWCFPC_Fallback_Cache
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{
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private $main_instance = null;
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private $objects = false;
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private $fallback_cache_ttl_registry = false;
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private $fallback_cache = false;
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function __construct( $main_instance )
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{
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$this->main_instance = $main_instance;
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if( $this->main_instance->get_single_config('cf_fallback_cache', 0) > 0 ) {
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if ( !$this->fallback_cache_init_ttl_registry() ) {
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$this->fallback_cache_ttl_registry = array();
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$this->fallback_cache_update_ttl_registry();
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}
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if( $this->main_instance->get_single_config('cf_fallback_cache_ttl', 0) > 0 )
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$this->fallback_cache_delete_expired_pages();
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}
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if( $this->main_instance->get_single_config('cf_cache_enabled', 0) == 0 || $this->main_instance->get_single_config('cf_fallback_cache', 0) == 0 || ($this->main_instance->get_single_config('cf_fallback_cache', 0) > 0 && $this->main_instance->get_single_config('cf_fallback_cache_curl', 0) > 0) )
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$this->fallback_cache_advanced_cache_disable();
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if( $this->main_instance->get_single_config('cf_cache_enabled', 0) > 0 && $this->main_instance->get_single_config('cf_fallback_cache', 0) > 0 && $this->main_instance->get_single_config('cf_fallback_cache_curl', 0) == 0 )
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$this->fallback_cache_advanced_cache_enable();
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$this->actions();
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}
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function actions() {
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// Ajax clear whole fallback cache
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add_action( 'wp_ajax_swcfpc_purge_fallback_page_cache', array($this, 'ajax_purge_whole_fallback_page_cache') );
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if( $this->main_instance->get_single_config('cf_fallback_cache', 0) > 0 && !is_admin() && !$this->main_instance->is_login_page() && $this->main_instance->get_single_config('cf_fallback_cache_curl', 0) > 0 ) {
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add_action('shutdown', array($this, 'fallback_cache_add_current_url_to_cache'), PHP_INT_MAX);
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}
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}
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function fallback_cache_enable() {
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$this->fallback_cache = true;
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}
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function fallback_cache_disable() {
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$this->fallback_cache = false;
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}
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function fallback_cache_save_config() {
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$cache_path = $this->main_instance->get_plugin_wp_content_directory().'/';
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file_put_contents( "{$cache_path}main_config.php", '<?php $swcfpc_config=\''.addslashes( json_encode($this->main_instance->get_config()) ).'\'; ?>');
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if( is_array($this->fallback_cache_ttl_registry) ) {
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file_put_contents( "{$cache_path}ttl_registry.json", json_encode( $this->fallback_cache_ttl_registry ) );
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}
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}
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function fallback_cache_delete_config() {
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$cache_path = $this->main_instance->get_plugin_wp_content_directory().'/';
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if( file_exists("{$cache_path}ttl_registry.json") ) {
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@unlink("{$cache_path}ttl_registry.json");
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}
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if( file_exists("{$cache_path}ttl_registry.php") ) {
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@unlink("{$cache_path}ttl_registry.php");
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}
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if( file_exists("{$cache_path}main_config.php") ) {
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@unlink("{$cache_path}main_config.php");
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}
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}
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function fallback_cache_advanced_cache_enable($force_wp_cache=false) {
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$this->objects = $this->main_instance->get_objects();
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$this->fallback_cache_init_directory();
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$advanced_cache_dest = WP_CONTENT_DIR.'/advanced-cache.php';
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if( !defined('SWCFPC_ADVANCED_CACHE') || !file_exists($advanced_cache_dest) ) {
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$advanced_cache_source = SWCFPC_PLUGIN_PATH.'assets/advanced-cache.php';
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if( file_exists($advanced_cache_dest) && !@unlink($advanced_cache_dest) ) {
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_advanced_cache_enable', 'Unable to remove the old advanced-cache.php from wp-content directory' );
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return false;
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}
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if( file_put_contents($advanced_cache_dest, file_get_contents($advanced_cache_source)) === false ) {
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//if ( !copy($advanced_cache_source, $advanced_cache_dest) ) {
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_advanced_cache_enable', 'Unable to copy advanced-cache.php to wp-content directory' );
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return false;
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}
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if( $force_wp_cache || !defined('WP_CACHE') || (defined('WP_CACHE') && WP_CACHE === false) ) {
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if( ! $this->fallback_cache_add_define_cache_wp_config() )
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return false;
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}
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$this->fallback_cache_save_config();
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}
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else {
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$this->fallback_cache_save_config();
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if( !defined('WP_CACHE') || (defined('WP_CACHE') && WP_CACHE === false) ) {
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if( ! $this->fallback_cache_add_define_cache_wp_config() )
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return false;
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}
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}
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return true;
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}
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function fallback_cache_advanced_cache_disable() {
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if( defined('SWCFPC_ADVANCED_CACHE') ) {
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if( file_exists(WP_CONTENT_DIR.'/advanced-cache.php') )
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@unlink(WP_CONTENT_DIR.'/advanced-cache.php');
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$this->fallback_cache_delete_config();
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if( !is_multisite() && defined('WP_CACHE') )
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$this->fallback_cache_add_define_cache_wp_config( false );
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$this->fallback_cache_purge_all();
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}
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return true;
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}
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function fallback_cache_add_define_cache_wp_config( $turn_it_on = true ) {
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$this->objects = $this->main_instance->get_objects();
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if( $turn_it_on && defined( 'WP_CACHE' ) && WP_CACHE ) {
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_add_define_cache_wp_config', 'WP_CACHE already defined' );
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return false;
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}
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if( defined( 'IS_PRESSABLE' ) && IS_PRESSABLE ) {
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_add_define_cache_wp_config', 'IS_PRESSABLE defined' );
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return false;
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}
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$config_file_path = ABSPATH.'wp-config.php';
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if ( ! file_exists($config_file_path) ) {
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_add_define_cache_wp_config', 'Unable to find wp-config.php' );
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return false;
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}
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if( ! $this->fallback_cache_is_wp_config_writable() ) {
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_add_define_cache_wp_config', 'wp-config.php is not writable' );
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return false;
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}
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// Get content of the config file.
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$config_file = explode("\n", file_get_contents( $config_file_path ));
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$config_file_count = count($config_file);
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// Get the value of WP_CACHE constant.
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$turn_it_on = $turn_it_on ? 'true' : 'false';
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/**
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* Filter allow to change the value of WP_CACHE constant
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*
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* @since 2.1
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*
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* @param string $turn_it_on The value of WP_CACHE constant.
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*/
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$turn_it_on = apply_filters( 'swcfpc_set_wp_cache_define', $turn_it_on );
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// Lets find out if the constant WP_CACHE is defined or not.
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$is_wp_cache_exist = false;
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// Get WP_CACHE constant define.
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$constant = "define('WP_CACHE', {$turn_it_on}); // Added by WP Cloudflare Super Page Cache";
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$last_line = '';
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for($i=0; $i < $config_file_count; ++$i) {
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// Remove double empty line
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if( $i>0 && trim($config_file[$i]) == '' && $last_line == '' ) {
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unset($config_file[$i]);
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continue;
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}
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$last_line = trim($config_file[$i]);
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if ( ! preg_match( '/^define\(\s*\'([A-Z_]+)\',(.*)\)/', $config_file[$i], $match ) ) {
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continue;
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}
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if ( 'WP_CACHE' === $match[1] ) {
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$is_wp_cache_exist = true;
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if( $turn_it_on == 'true' ) {
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$config_file[$i] = $constant;
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}
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else {
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unset($config_file[$i]);
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$last_line = '';
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}
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}
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}
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// If the constant does not exist, create it.
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if ( $is_wp_cache_exist === false ) {
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array_shift( $config_file );
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array_unshift( $config_file, "<?php\r\n", $constant );
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$this->objects['logs']->add_log('fallback_cache::fallback_cache_add_define_cache_wp_config', 'Constant WP_CACHE does not exists. I will try to add in into wp-config.php' );
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}
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if( isset($config_file[ $config_file_count-1 ]) && trim($config_file[ $config_file_count-1 ]) == '' )
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unset( $config_file[ $config_file_count-1 ] );
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// Insert the constant in wp-config.php file.
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$handle = @fopen( $config_file_path, 'w' );
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$config_file = array_values( $config_file );
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$config_file_count = count( $config_file );
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for($i=0; $i<$config_file_count; ++$i) {
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$line = trim($config_file[$i]);
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if( $i < ($config_file_count-1) )
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$line .= "\n";
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@fwrite( $handle, $line );
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}
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@fclose( $handle );
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return true;
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}
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function fallback_cache_is_wp_config_writable() {
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$config_file_path = ABSPATH.'wp-config.php';
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return is_writable( $config_file_path );
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}
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function fallback_cache_is_wp_content_writable() {
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return is_writable( WP_CONTENT_DIR );
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}
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/*
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function fallback_cache_start_caching_via_hook() {
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$this->objects = $this->main_instance->get_objects();
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if( $this->objects['cache_controller']->is_cache_enabled() && !$this->objects['cache_controller']->is_url_to_bypass() && !$this->objects['cache_controller']->can_i_bypass_cache() )
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$this->fallback_cache_enable();
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else
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$this->fallback_cache_disable();
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if( $this->fallback_cache == true && isset( $_SERVER['REQUEST_METHOD'] ) && strcasecmp($_SERVER['REQUEST_METHOD'], 'GET') == 0 ) {
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if (isset($_SERVER['HTTP_USER_AGENT']) && strcasecmp($_SERVER['HTTP_USER_AGENT'], 'ua-swcfpc-fc') == 0)
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return;
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$cache_path = $this->fallback_cache_init_directory();
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$cache_key = $this->fallback_cache_get_current_page_cache_key();
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if (!file_exists($cache_path . $cache_key) || $this->fallback_cache_is_expired_page($cache_key)) {
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ob_start(array($this, 'fallback_cache_end_caching_via_hook') );
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}
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}
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}
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function fallback_cache_end_caching_via_hook( $html ) {
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$cache_path = $this->fallback_cache_init_directory();
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$cache_key = $this->fallback_cache_get_current_page_cache_key();
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if ($this->main_instance->get_single_config('cf_fallback_cache_ttl', 0) == 0)
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$ttl = 0;
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else
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$ttl = time() + $this->main_instance->get_single_config('cf_fallback_cache_ttl', 0);
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if( $ttl > 0 )
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$html .= "\n<!-- Page retrieved from WP Cloudflare Super Page Cache's fallback cache - page generated @ " . date('Y-m-d H:i:s') . ' - fallback cache expiration @ ' . date('Y-m-d H:i:s', $ttl) . ' -->';
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else
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$html .= "\n<!-- Page retrieved from WP Cloudflare Super Page Cache's fallback cache - page generated @ " . date('Y-m-d H:i:s') . ' - fallback cache expiration @ never expires -->';
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file_put_contents($cache_path . $cache_key, $html);
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// Update TTL
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$this->fallback_cache_set_single_ttl($cache_key, $ttl);
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$this->fallback_cache_update_ttl_registry();
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}
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*/
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function fallback_cache_add_current_url_to_cache() {
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if( $this->fallback_cache == true && $this->fallback_cache_is_url_to_exclude() == false && isset( $_SERVER['REQUEST_METHOD'] ) && strcasecmp($_SERVER['REQUEST_METHOD'], 'GET') == 0 ) {
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if( isset($_SERVER['HTTP_USER_AGENT']) && strcasecmp($_SERVER['HTTP_USER_AGENT'], 'ua-swcfpc-fc') == 0 )
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return;
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$cache_path = $this->fallback_cache_init_directory();
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$cache_key = $this->fallback_cache_get_current_page_cache_key();
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if ( !file_exists($cache_path . $cache_key) || $this->fallback_cache_is_expired_page( $cache_key ) ) {
|
||
|
|
|
||
|
|
// absolute URI in multisite aware environment
|
||
|
|
$parts = parse_url(home_url());
|
||
|
|
$current_uri = "{$parts['scheme']}://{$parts['host']}" . add_query_arg(NULL, NULL);
|
||
|
|
|
||
|
|
$response = wp_remote_get($current_uri, array(
|
||
|
|
'timeout' => defined('SWCFPC_CURL_TIMEOUT') ? SWCFPC_CURL_TIMEOUT : 10,
|
||
|
|
'sslverify' => false,
|
||
|
|
'user-agent' => 'ua-swcfpc-fc'
|
||
|
|
));
|
||
|
|
|
||
|
|
if (!is_wp_error($response)) {
|
||
|
|
|
||
|
|
$response_code = wp_remote_retrieve_response_code($response);
|
||
|
|
|
||
|
|
if( $response_code == 200 ) {
|
||
|
|
|
||
|
|
if ($this->main_instance->get_single_config('cf_fallback_cache_ttl', 0) == 0) {
|
||
|
|
$ttl = 0;
|
||
|
|
} else {
|
||
|
|
$ttl = time() + $this->main_instance->get_single_config('cf_fallback_cache_ttl', 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
$body = wp_remote_retrieve_body($response);
|
||
|
|
|
||
|
|
if( $ttl > 0 ) {
|
||
|
|
$body .= "\n<!-- Page retrieved from Super Page Cache for Cloudflare's fallback cache via cURL - page generated @ " . date('Y-m-d H:i:s') . ' - fallback cache expiration @ ' . date('Y-m-d H:i:s', $ttl) . " - cache key {$cache_key} -->";
|
||
|
|
} else {
|
||
|
|
$body .= "\n<!-- Page retrieved from Super Page Cache for Cloudflare's fallback cache via cURL - page generated @ " . date('Y-m-d H:i:s') . " - fallback cache expiration @ never expires - cache key {$cache_key} -->";
|
||
|
|
}
|
||
|
|
|
||
|
|
// Provide a filter to modify the HTML before it is cached
|
||
|
|
$body = apply_filters('swcfpc_curl_fallback_cache_html', $body);
|
||
|
|
|
||
|
|
file_put_contents($cache_path . $cache_key, $body);
|
||
|
|
|
||
|
|
// Update TTL
|
||
|
|
$this->fallback_cache_set_single_ttl($cache_key, $ttl);
|
||
|
|
$this->fallback_cache_update_ttl_registry();
|
||
|
|
|
||
|
|
// Store headers
|
||
|
|
if( $this->main_instance->get_single_config('cf_fallback_cache_save_headers', 0) > 0 ) {
|
||
|
|
$this->fallback_cache_save_headers( $cache_path, $cache_key );
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_remove_url_parameters( $url ) {
|
||
|
|
|
||
|
|
$url_parsed = parse_url( $url );
|
||
|
|
$url_query_params = [];
|
||
|
|
|
||
|
|
if( array_key_exists( 'query', $url_parsed ) ) {
|
||
|
|
|
||
|
|
if( $url_parsed[ 'query' ] === '' ) {
|
||
|
|
|
||
|
|
// this means the URL ends with just ? i.e. /example-page/? - so just remove the last character ? from the URL
|
||
|
|
$url = substr( trim( $url ), 0, -1 );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// First parse the query params to an array to manage it better
|
||
|
|
parse_str( $url_parsed[ 'query' ], $url_query_params );
|
||
|
|
|
||
|
|
// Get the array of query params that would be ignored
|
||
|
|
$ignored_query_params = $this->main_instance->get_ignored_query_params();
|
||
|
|
|
||
|
|
// Loop though $ignored_query_params
|
||
|
|
foreach( $ignored_query_params as $ignored_query_param ) {
|
||
|
|
|
||
|
|
// Check if that query param is present in $url_query_params
|
||
|
|
if( array_key_exists( $ignored_query_param, $url_query_params ) ) {
|
||
|
|
|
||
|
|
// The ignored query param is present in the $url_query_params. So, unset it from there
|
||
|
|
unset( $url_query_params[ $ignored_query_param ] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Now lets check if we have any query params left in $url_query_params
|
||
|
|
if( count( $url_query_params ) > 0 ) {
|
||
|
|
|
||
|
|
$new_url_query_params = http_build_query( $url_query_params );
|
||
|
|
$url_parsed[ 'query' ] = $new_url_query_params;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
// Remove the query section from parsed URL
|
||
|
|
unset( $url_parsed[ 'query' ] );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the new current URL without the marketing query params
|
||
|
|
$url = $this->main_instance->get_unparsed_url( $url_parsed );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $url;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_get_current_page_cache_key( $url=null ) {
|
||
|
|
|
||
|
|
$replacements = array( '://', '/', '?', '#', '&', '.', ',', '@', '-', '\'', '"', '%', ' ', '\\', '=' );
|
||
|
|
|
||
|
|
if( !is_null($url) ) {
|
||
|
|
|
||
|
|
$parts = parse_url( strtolower($url) );
|
||
|
|
|
||
|
|
if( !$parts )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
$current_uri = isset($parts['path']) ? $parts['path'] : '/';
|
||
|
|
|
||
|
|
if( isset($parts['query']) )
|
||
|
|
$current_uri .= "?{$parts['query']}";
|
||
|
|
|
||
|
|
if( $current_uri == '/' )
|
||
|
|
$current_uri = $parts['host'];
|
||
|
|
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
|
||
|
|
$current_uri = add_query_arg( NULL, NULL );
|
||
|
|
|
||
|
|
if( $current_uri == '/' ) {
|
||
|
|
$parts = parse_url( home_url() );
|
||
|
|
$current_uri = $parts['host'];
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if( substr($current_uri, 0, 1) == '/' )
|
||
|
|
$current_uri = substr($current_uri, 1);
|
||
|
|
|
||
|
|
if( substr($current_uri, -1, 1) == '/' )
|
||
|
|
$current_uri = substr($current_uri, 0, -1);
|
||
|
|
|
||
|
|
$cache_key = str_replace( $replacements, '_', $this->fallback_cache_remove_url_parameters($current_uri) );
|
||
|
|
|
||
|
|
// Fix error fnmatch(): Filename exceeds the maximum allowed length
|
||
|
|
$cache_key = sha1( $cache_key );
|
||
|
|
|
||
|
|
/*
|
||
|
|
if( strlen($cache_key) > 250 ) {
|
||
|
|
$cache_key = substr($cache_key, 0, -32);
|
||
|
|
$cache_key .= md5( $current_uri );
|
||
|
|
}*/
|
||
|
|
|
||
|
|
$cache_key .= '.html';
|
||
|
|
|
||
|
|
return $cache_key;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_init_directory() {
|
||
|
|
|
||
|
|
$cache_path = $this->main_instance->get_plugin_wp_content_directory().'/fallback_cache/';
|
||
|
|
|
||
|
|
if( ! file_exists($cache_path) )
|
||
|
|
wp_mkdir_p($cache_path);
|
||
|
|
|
||
|
|
if( file_exists($cache_path) && !file_exists( "{$cache_path}index.php" ) )
|
||
|
|
file_put_contents( "{$cache_path}index.php", '<?php // Silence is golden');
|
||
|
|
|
||
|
|
return $cache_path;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_init_ttl_registry() {
|
||
|
|
|
||
|
|
$this->fallback_cache_ttl_registry = get_option( 'swcfpc_fc_ttl_registry', false );
|
||
|
|
|
||
|
|
if( !$this->fallback_cache_ttl_registry )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
// If the option exists, return true
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_update_ttl_registry() {
|
||
|
|
|
||
|
|
update_option( 'swcfpc_fc_ttl_registry', $this->fallback_cache_ttl_registry );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_set_single_ttl($name, $value) {
|
||
|
|
|
||
|
|
if( !is_array($this->fallback_cache_ttl_registry) )
|
||
|
|
$this->fallback_cache_ttl_registry = array();
|
||
|
|
|
||
|
|
if( is_array($value) )
|
||
|
|
$this->fallback_cache_ttl_registry[trim($name)] = $value;
|
||
|
|
else
|
||
|
|
$this->fallback_cache_ttl_registry[trim($name)] = (int) $value;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_get_single_ttl($name, $default=false) {
|
||
|
|
|
||
|
|
if( !is_array($this->fallback_cache_ttl_registry) || !isset($this->fallback_cache_ttl_registry[$name]) )
|
||
|
|
return $default;
|
||
|
|
|
||
|
|
if( is_array($this->fallback_cache_ttl_registry[$name]))
|
||
|
|
return $this->fallback_cache_ttl_registry[$name];
|
||
|
|
|
||
|
|
return (int) $this->fallback_cache_ttl_registry[$name];
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_is_expired_page( $cache_key ) {
|
||
|
|
|
||
|
|
$current_ttl = $this->fallback_cache_get_single_ttl( $cache_key, 0 );
|
||
|
|
|
||
|
|
if( $current_ttl > 0 && time() > $current_ttl )
|
||
|
|
return true;
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_delete_expired_pages() {
|
||
|
|
|
||
|
|
if( is_array($this->fallback_cache_ttl_registry) ) {
|
||
|
|
|
||
|
|
$cache_path = $this->fallback_cache_init_directory();
|
||
|
|
|
||
|
|
foreach( $this->fallback_cache_ttl_registry as $cache_key => $ttl ) {
|
||
|
|
|
||
|
|
if( $this->fallback_cache_is_expired_page( $cache_key ) && file_exists($cache_path.$cache_key) ) {
|
||
|
|
@unlink( $cache_path.$cache_key );
|
||
|
|
unset($this->fallback_cache_ttl_registry[$cache_key]);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->fallback_cache_update_ttl_registry();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_purge_all() {
|
||
|
|
|
||
|
|
$cache_path = $this->fallback_cache_init_directory();
|
||
|
|
|
||
|
|
//Get a list of all of the file names in the folder.
|
||
|
|
$files = glob($cache_path . '/*');
|
||
|
|
|
||
|
|
foreach($files as $file) {
|
||
|
|
|
||
|
|
if(is_file($file))
|
||
|
|
@unlink($file);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->fallback_cache_ttl_registry = array();
|
||
|
|
$this->fallback_cache_update_ttl_registry();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_purge_urls( $urls ) {
|
||
|
|
|
||
|
|
$cache_path = $this->fallback_cache_init_directory();
|
||
|
|
|
||
|
|
if( is_array($urls) ) {
|
||
|
|
|
||
|
|
foreach ($urls as $single_url) {
|
||
|
|
|
||
|
|
$cache_key = $this->fallback_cache_get_current_page_cache_key($single_url);
|
||
|
|
$headers_file = "{$cache_path}{$cache_key}.headers.json";
|
||
|
|
|
||
|
|
if (file_exists($cache_path . $cache_key)) {
|
||
|
|
@unlink($cache_path . $cache_key);
|
||
|
|
unset($this->fallback_cache_ttl_registry[$cache_key]);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (file_exists($headers_file)) {
|
||
|
|
@unlink($headers_file);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->fallback_cache_update_ttl_registry();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_retrive_current_page() {
|
||
|
|
|
||
|
|
$cache_path = $this->fallback_cache_init_directory();
|
||
|
|
$cache_key = $this->fallback_cache_get_current_page_cache_key();
|
||
|
|
|
||
|
|
if( $this->main_instance->get_single_config('cf_fallback_cache_prevent_cache_urls_without_trailing_slash', 1) > 0 && $this->main_instance->does_current_url_have_trailing_slash() == false )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
if( $this->fallback_cache_is_cookie_to_exclude() )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
if( $this->fallback_cache_is_cookie_to_exclude_cf_worker() )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
if( file_exists($cache_path.$cache_key) && !$this->fallback_cache_is_expired_page( $cache_key ) ) {
|
||
|
|
|
||
|
|
$this->objects = $this->main_instance->get_objects();
|
||
|
|
$stored_headers = $this->fallback_cache_get_stored_headers( $cache_path, $cache_key );
|
||
|
|
|
||
|
|
if( $this->main_instance->get_single_config('cf_strip_cookies', 0) > 0 ) {
|
||
|
|
header_remove('Set-Cookie');
|
||
|
|
}
|
||
|
|
|
||
|
|
header_remove('Pragma');
|
||
|
|
header_remove('Expires');
|
||
|
|
header_remove('Cache-Control');
|
||
|
|
header('Cache-Control: '.$this->objects['cache_controller']->get_cache_control_value());
|
||
|
|
header('X-WP-CF-Super-Cache: cache');
|
||
|
|
header('X-WP-CF-Super-Cache-Active: 1');
|
||
|
|
header('X-WP-CF-Fallback-Cache: 1');
|
||
|
|
header('X-WP-CF-Super-Cache-Cache-Control: '.$this->objects['cache_controller']->get_cache_control_value());
|
||
|
|
header('X-WP-CF-Super-Cache-Cookies-Bypass: '.$this->objects['cache_controller']->get_cookies_to_bypass_in_worker_mode());
|
||
|
|
|
||
|
|
if( $stored_headers ) {
|
||
|
|
|
||
|
|
foreach($stored_headers as $single_header) {
|
||
|
|
header($single_header, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
die( file_get_contents($cache_path . $cache_key) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_save_headers($cache_path, $cache_key) {
|
||
|
|
|
||
|
|
$headers_file = "{$cache_path}{$cache_key}.headers.json";
|
||
|
|
|
||
|
|
$headers_list = headers_list();
|
||
|
|
$headers_count = count( $headers_list );
|
||
|
|
|
||
|
|
for( $i=0; $i<$headers_count; ++$i ) {
|
||
|
|
|
||
|
|
list($header_name, $header_value) = explode(':', $headers_list[$i]);
|
||
|
|
|
||
|
|
if(
|
||
|
|
strcasecmp($header_name, 'cache-control') == 0 ||
|
||
|
|
strcasecmp($header_name, 'set-cookie') == 0 ||
|
||
|
|
strcasecmp( substr($header_name, 0, 19), 'X-WP-CF-Super-Cache' ) == 0
|
||
|
|
) {
|
||
|
|
unset($headers_list[$i]);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if( count($headers_list) == 0 ) {
|
||
|
|
|
||
|
|
if( file_exists($headers_file) )
|
||
|
|
@unlink($headers_file);
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
file_put_contents( $headers_file, json_encode($headers_list) );
|
||
|
|
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_get_stored_headers($cache_path, $cache_key) {
|
||
|
|
|
||
|
|
$headers_file = "{$cache_path}{$cache_key}.headers.json";
|
||
|
|
|
||
|
|
if( file_exists($headers_file) ) {
|
||
|
|
|
||
|
|
$swcfpc_headers = json_decode( file_get_contents( $headers_file ), true );
|
||
|
|
|
||
|
|
if( is_array($swcfpc_headers) && count($swcfpc_headers) > 0 )
|
||
|
|
return $swcfpc_headers;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_is_cookie_to_exclude() {
|
||
|
|
|
||
|
|
if( count($_COOKIE) == 0 )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
$excluded_cookies = $this->main_instance->get_single_config('cf_fallback_cache_excluded_cookies', array());
|
||
|
|
|
||
|
|
if( count($excluded_cookies) == 0 )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
$cookies = array_keys( $_COOKIE );
|
||
|
|
|
||
|
|
foreach ($excluded_cookies as $single_cookie) {
|
||
|
|
|
||
|
|
if( count( preg_grep("#{$single_cookie}#", $cookies) ) > 0 )
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_is_cookie_to_exclude_cf_worker() {
|
||
|
|
|
||
|
|
if( count($_COOKIE) == 0 )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
if( $this->main_instance->get_single_config('cf_woker_enabled', 0) == 0 )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
$excluded_cookies = $this->main_instance->get_single_config('cf_fallback_cache_excluded_cookies', array());
|
||
|
|
|
||
|
|
if( count($excluded_cookies) == 0 )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
$cookies = array_keys( $_COOKIE );
|
||
|
|
|
||
|
|
foreach ($excluded_cookies as $single_cookie) {
|
||
|
|
|
||
|
|
if( count( preg_grep("#{$single_cookie}#", $cookies) ) > 0 )
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function fallback_cache_is_url_to_exclude($url=false) {
|
||
|
|
|
||
|
|
if( $this->main_instance->get_single_config('cf_fallback_cache_prevent_cache_urls_without_trailing_slash', 1) > 0 && $this->main_instance->does_current_url_have_trailing_slash() == false )
|
||
|
|
return true;
|
||
|
|
|
||
|
|
$excluded_urls = $this->main_instance->get_single_config('cf_fallback_cache_excluded_urls', array());
|
||
|
|
|
||
|
|
if( is_array($excluded_urls) && count($excluded_urls) > 0 ) {
|
||
|
|
|
||
|
|
if( $url === false ) {
|
||
|
|
|
||
|
|
$current_url = $_SERVER['REQUEST_URI'];
|
||
|
|
|
||
|
|
if( isset($_SERVER['QUERY_STRING']) && strlen($_SERVER['QUERY_STRING']) > 0 )
|
||
|
|
$current_url .= "?{$_SERVER['QUERY_STRING']}";
|
||
|
|
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$current_url = $url;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach( $excluded_urls as $url_to_exclude ) {
|
||
|
|
|
||
|
|
if( $this->main_instance->wildcard_match($url_to_exclude, $current_url) )
|
||
|
|
return true;
|
||
|
|
|
||
|
|
/*
|
||
|
|
if( fnmatch($url_to_exclude, $current_url, FNM_CASEFOLD) ) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function ajax_purge_whole_fallback_page_cache() {
|
||
|
|
|
||
|
|
check_ajax_referer( 'ajax-nonce-string', 'security' );
|
||
|
|
|
||
|
|
$return_array = array('status' => 'ok');
|
||
|
|
|
||
|
|
$this->fallback_cache_purge_all();
|
||
|
|
|
||
|
|
$this->objects = $this->main_instance->get_objects();
|
||
|
|
$this->objects['logs']->add_log('cache_controller::ajax_purge_whole_fallback_page_cache', 'Purge whole fallback page cache' );
|
||
|
|
|
||
|
|
$return_array['success_msg'] = __('Fallback cache purged successfully!', 'wp-cloudflare-page-cache');
|
||
|
|
|
||
|
|
die(json_encode($return_array));
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|