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File manager - Edit - /usr/src/litespeed-wp-plugin/2.2.7/litespeed-cache/inc/object.class.php

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<?php /** * The object cache class * * * @since 1.8 * @package LiteSpeed_Cache * @subpackage LiteSpeed_Cache/inc * @author LiteSpeed Technologies <info@litespeedtech.com> / /* * Handle exception / if ( ! function_exists( 'litespeed_exception_handler' ) ) { function litespeed_exception_handler( $errno, $errstr, $errfile, $errline ) { throw new ErrorException($errstr, 0, $errno, $errfile, $errline) ; } } class LiteSpeed_Cache_Object { private static $_instance ; private $_oc_data_file ; private $_conn ; private $_cfg_enabled ; private $_cfg_method ; private $_cfg_host ; private $_cfg_port ; private $_cfg_persistent ; private $_cfg_admin ; private $_cfg_transients ; private $_cfg_db ; private $_cfg_user ; private $_cfg_pswd ; private $_default_life = 360 ; private $_oc_driver = 'Memcached' ; // Redis or Memcached private $_global_groups ; private $_non_persistent_groups ; /* * Init * * NOTE: this class may be included without initialized LiteSpeed_Cache core * * @since 1.8 * @access private / private function __construct( $cfg = false ) { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug2( '[Object] init' ) ; $this->_oc_data_file = WP_CONTENT_DIR . '/.object-cache.ini' ; if ( $cfg ) { $this->_cfg_method = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_KIND ] ? true : false ; $this->_cfg_host = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_HOST ] ; $this->_cfg_port = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PORT ] ; $this->_cfg_life = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_LIFE ] ; $this->_cfg_persistent = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PERSISTENT ] ; $this->_cfg_admin = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_ADMIN ] ; $this->_cfg_transients = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_TRANSIENTS ] ; $this->_cfg_db = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_DB_ID ] ; $this->_cfg_user = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_USER ] ; $this->_cfg_pswd = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PSWD ] ; $this->_global_groups = explode( "\n", $cfg[ LiteSpeed_Cache_Config::ITEM_OBJECT_GLOBAL_GROUPS ] ) ; $this->_non_persistent_groups = explode( "\n", $cfg[ LiteSpeed_Cache_Config::ITEM_OBJECT_NON_PERSISTENT_GROUPS ] ) ; if ( $this->_cfg_method ) { $this->_oc_driver = 'Redis' ; } $this->_cfg_enabled = $cfg[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT ] && class_exists( $this->_oc_driver ) && $this->_cfg_host ; defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] init with cfg result : ', $this->_cfg_enabled ) ; } elseif ( class_exists( 'LiteSpeed_Cache' ) ) { $this->_cfg_method = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_KIND ) ? true : false ; $this->_cfg_host = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_HOST ) ; $this->_cfg_port = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PORT ) ; $this->_cfg_life = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_LIFE ) ; $this->_cfg_persistent = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PERSISTENT ) ; $this->_cfg_admin = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_ADMIN ) ; $this->_cfg_transients = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_TRANSIENTS ) ; $this->_cfg_db = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_DB_ID ) ; $this->_cfg_user = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_USER ) ; $this->_cfg_pswd = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PSWD ) ; $this->_global_groups = explode( "\n", get_option( LiteSpeed_Cache_Config::ITEM_OBJECT_GLOBAL_GROUPS ) ) ; $this->_non_persistent_groups = explode( "\n", get_option( LiteSpeed_Cache_Config::ITEM_OBJECT_NON_PERSISTENT_GROUPS ) ) ; if ( $this->_cfg_method ) { $this->_oc_driver = 'Redis' ; } $this->_cfg_enabled = LiteSpeed_Cache::config( LiteSpeed_Cache_Config::OPID_CACHE_OBJECT ) && class_exists( $this->_oc_driver ) && $this->_cfg_host ; } elseif ( file_exists( $this->_oc_data_file ) ) { // Get cfg from oc_data_file $cfg = parse_ini_file( $this->_oc_data_file, true ) ; $this->_cfg_method = ! empty( $cfg[ 'object_cache' ][ 'method' ] ) ? $cfg[ 'object_cache' ][ 'method' ] : false ; $this->_cfg_host = $cfg[ 'object_cache' ][ 'host' ] ; $this->_cfg_port = $cfg[ 'object_cache' ][ 'port' ] ; $this->_cfg_life = ! empty( $cfg[ 'object_cache' ][ 'life' ] ) ? $cfg[ 'object_cache' ][ 'life' ] : $this->_default_life ; $this->_cfg_persistent = ! empty( $cfg[ 'object_cache' ][ 'persistent' ] ) ? $cfg[ 'object_cache' ][ 'persistent' ] : false ; $this->_cfg_admin = ! empty( $cfg[ 'object_cache' ][ 'cache_admin' ] ) ? $cfg[ 'object_cache' ][ 'cache_admin' ] : false ; $this->_cfg_transients = ! empty( $cfg[ 'object_cache' ][ 'cache_transients' ] ) ? $cfg[ 'object_cache' ][ 'cache_transients' ] : false ; $this->_cfg_db = ! empty( $cfg[ 'object_cache' ][ 'db' ] ) ? $cfg[ 'object_cache' ][ 'db' ] : 0 ; $this->_cfg_user = ! empty( $cfg[ 'object_cache' ][ 'user' ] ) ? $cfg[ 'object_cache' ][ 'user' ] : '' ; $this->_cfg_pswd = ! empty( $cfg[ 'object_cache' ][ 'pswd' ] ) ? $cfg[ 'object_cache' ][ 'pswd' ] : '' ; $this->_global_groups = ! empty( $cfg[ 'object_cache' ][ 'global_groups' ] ) ? explode( ',', $cfg[ 'object_cache' ][ 'global_groups' ] ) : array() ; $this->_non_persistent_groups = ! empty( $cfg[ 'object_cache' ][ 'non_persistent_groups' ] ) ? explode( ',', $cfg[ 'object_cache' ][ 'non_persistent_groups' ] ) : array() ; if ( $this->_cfg_method ) { $this->_oc_driver = 'Redis' ; } $this->_cfg_enabled = class_exists( $this->_oc_driver ) && $this->_cfg_host ; } else { $this->_cfg_enabled = false ; } } /* * Get `Store Transients` setting value * * @since 1.8.3 * @access public / public function store_transients( $group ) { return $this->_cfg_transients && $this->_is_transients_group( $group ) ; } /* * Check if the group belongs to transients or not * * @since 1.8.3 * @access private / private function _is_transients_group( $group ) { return in_array( $group, array( 'transient', 'site-transient' ) ) ; } /* * Maintain WP object cache file * * @since 1.8 * @access public / public function update_file( $options ) { // Update data file $data = "[object_cache]" . "\nmethod = " . $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_KIND ] . "\nhost = " . $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_HOST ] . "\nport = " . (int) $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PORT ] . "\nlife = " . $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_LIFE ] . "\nuser = '" . $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_USER ] . "'" . "\npswd = '" . $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PSWD ] . "'" . "\ndb = " . (int) $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_DB_ID ] . "\npersistent = " . ( $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_PERSISTENT ] ? 1 : 0 ) . "\ncache_admin = " . ( $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_ADMIN ] ? 1 : 0 ) . "\ncache_transients = " . ( $options[ LiteSpeed_Cache_Config::OPID_CACHE_OBJECT_TRANSIENTS ] ? 1 : 0 ) . "\nglobal_groups = " . implode( ',', explode( "\n", $options[ LiteSpeed_Cache_Config::ITEM_OBJECT_GLOBAL_GROUPS ] ) ) . "\nnon_persistent_groups = " . implode( ',', explode( "\n", $options[ LiteSpeed_Cache_Config::ITEM_OBJECT_NON_PERSISTENT_GROUPS ] ) ) ; Litespeed_File::save( $this->_oc_data_file, $data ) ; // NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used $_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php' ; $_oc_wp_file = WP_CONTENT_DIR . '/object-cache.php' ; // Update cls file if ( ! file_exists( $_oc_wp_file ) \|\| md5_file( $_oc_wp_file ) !== md5_file( $_oc_ori_file ) ) { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] copying object-cache.php file to ' . $_oc_wp_file ) ; copy( $_oc_ori_file, $_oc_wp_file ) ; } } /* * Remove object cache file * * @since 1.8.2 * @access public / public function del_file() { // NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used $_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php' ; $_oc_wp_file = WP_CONTENT_DIR . '/object-cache.php' ; defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] removing ' . $_oc_wp_file ) ; if ( file_exists( $_oc_wp_file ) && md5_file( $_oc_wp_file ) === md5_file( $_oc_ori_file ) ) { unlink( $_oc_wp_file ) ; } file_exists( $this->_oc_data_file ) && unlink( $this->_oc_data_file ) ; } /* * Try to build connection * * @since 1.8 * @access public / public function test_connection() { return $this->_connect() ; } /* * Force to connect with this setting * @return [type] [description] / public function reconnect( $cfg ) { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] Reconnecting' ) ; // error_log( 'Object: reconnect !' ) ; if ( isset( $this->_conn ) ) { // error_log( 'Object: Quiting existing connection!' ) ; defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] Quiting existing connection' ) ; $this->flush() ; $this->_conn = null ; self::$_instance = null ; } self::$_instance = new self( $cfg ) ; self::$_instance->_connect() ; if ( isset( self::$_instance->_conn ) ) { self::$_instance->flush() ; } } /* * Connect to Memcached/Redis server * * @since 1.8 * @access private / private function _connect() { if ( isset( $this->_conn ) ) { // error_log( 'Object: _connected' ) ; return true ; } if ( ! class_exists( $this->_oc_driver ) \|\| ! $this->_cfg_host ) { return null ; } defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] connecting to ' . $this->_cfg_host . ':' . $this->_cfg_port ) ; $failed = false ; /* * Connect to Redis * * @since 1.8.1 * @see https://github.com/phpredis/phpredis/#example-1 / if ( $this->_oc_driver == 'Redis' ) { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] Init ' . $this->_oc_driver . ' connection' ) ; set_error_handler( 'litespeed_exception_handler' ) ; try { $this->_conn = new Redis() ; // error_log( 'Object: _connect Redis' ) ; if ( $this->_cfg_persistent ) { if ( $this->_cfg_port ) { $this->_conn->pconnect( $this->_cfg_host, $this->_cfg_port ) ; } else { $this->_conn->pconnect( $this->_cfg_host ) ; } } else { if ( $this->_cfg_port ) { $this->_conn->connect( $this->_cfg_host, $this->_cfg_port ) ; } else { $this->_conn->connect( $this->_cfg_host ) ; } } if ( $this->_cfg_pswd ) { $this->_conn->auth( $this->_cfg_pswd ) ; } if ( $this->_cfg_db ) { $this->_conn->select( $this->_cfg_db ) ; } $res = $this->_conn->ping() ; if ( $res != '+PONG' ) { $failed = true ; } } catch ( \Exception $e ) { error_log( $e->getMessage() ) ; $failed = true ; } catch ( ErrorException $e ) { error_log( $e->getMessage() ) ; $failed = true ; } restore_error_handler() ; } /* * Connect to Memcached / else { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] Init ' . $this->_oc_driver . ' connection' ) ; if ( $this->_cfg_persistent ) { $this->_conn = new Memcached( $this->_get_mem_id() ) ; // Check memcached persistent connection if ( $this->_validate_mem_server() ) { // error_log( 'Object: _validate_mem_server' ) ; defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] Got persistent ' . $this->_oc_driver . ' connection' ) ; return true ; } defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] No persistent ' . $this->_oc_driver . ' server list!' ) ; } else { // error_log( 'Object: new memcached!' ) ; $this->_conn = new Memcached ; } $this->_conn->addServer( $this->_cfg_host, (int) $this->_cfg_port ) ; /* * Add SASL auth * @since 1.8.1 / if ( $this->_cfg_user && $this->_cfg_pswd && method_exists( $this->_conn, 'setSaslAuthData' ) && ini_get( 'memcached.use_sasl' ) ) { $this->_conn->setSaslAuthData( $this->_cfg_user, $this->_cfg_pswd ) ; } // Check connection if ( ! $this->_validate_mem_server() ) { $failed = true ; } } // If failed to connect if ( $failed ) { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] Failed to connect ' . $this->_oc_driver . ' server!' ) ; $this->_conn = null ; $this->_cfg_enabled = false ; // error_log( 'Object: false!' ) ; return false ; } defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug2( '[Object] Connected' ) ; return true ; } /* * Check if the connected memcached host is the one in cfg * * @since 1.8 * @access private / private function _validate_mem_server() { $mem_list = $this->_conn->getStats() ; if ( empty( $mem_list ) ) { return false ; } foreach ( $mem_list as $k => $v ) { if ( substr( $k, 0, strlen( $this->_cfg_host ) ) != $this->_cfg_host ) { continue ; } if ( $v[ 'pid' ] > 0 ) { return true ; } } return false ; } /* * Get memcached unique id to be used for connecting * * @since 1.8 * @access private / private function _get_mem_id() { $mem_id = 'litespeed' ; if ( is_multisite() ) { $mem_id .= '_' . get_current_blog_id() ; } return $mem_id ; } /* * Get cache * * @since 1.8 * @access public / public function get( $key ) { if ( ! $this->_cfg_enabled ) { return null ; } if ( ! $this->_can_cache() ) { return null ; } if( ! $this->_connect() ) { return null ; } // defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug2( '[Object] get ' . $key ) ; $res = $this->_conn->get( $key ) ; return $res ; } /* * Set cache * * @since 1.8 * @access public / public function set( $key, $data, $expire ) { if ( ! $this->_cfg_enabled ) { return null ; } if ( ! $this->_can_cache() ) { return null ; } if( ! $this->_connect() ) { return null ; } // defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug2( '[Object] set ' . $key ) ; // error_log( 'Object: set ' . $key ) ; $ttl = $expire ?: $this->_cfg_life ; if ( $this->_oc_driver == 'Redis' ) { $res = $this->_conn->setEx( $key, $ttl, $data ) ; } else { $res = $this->_conn->set( $key, $data, $ttl ) ; } return $res ; } /* * Check if can cache or not * * @since 1.8 * @access private / private function _can_cache() { if ( ! $this->_cfg_admin && defined( 'WP_ADMIN' ) ) { return false ; } return true ; } /* * Delete cache * * @since 1.8 * @access public / public function delete( $key ) { if ( ! $this->_cfg_enabled ) { return null ; } if( ! $this->_connect() ) { return null ; } // defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug2( '[Object] delete ' . $key ) ; $res = $this->_conn->delete( $key ) ; return $res ; } /* * Clear all cache * * @since 1.8 * @access public / public function flush() { if ( ! $this->_cfg_enabled ) { defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] bypass flushing' ) ; return null ; } if( ! $this->_connect() ) { return null ; } defined( 'LSCWP_LOG' ) && LiteSpeed_Cache_Log::debug( '[Object] flush!' ) ; if ( $this->_oc_driver == 'Redis' ) { $res = $this->_conn->flushDb() ; } else { $res = $this->_conn->flush() ; $this->_conn->resetServerList() ; } return $res ; } /* * Add global groups * * @since 1.8 * @access public / public function add_global_groups( $groups ) { if ( ! is_array( $groups ) ) { $groups = array( $groups ) ; } $this->_global_groups = array_merge( $this->_global_groups, $groups ) ; $this->_global_groups = array_unique( $this->_global_groups ) ; } /* * Check if is in global groups or not * * @since 1.8 * @access public / public function is_global( $group ) { return in_array( $group, $this->_global_groups ) ; } /* * Add non persistent groups * * @since 1.8 * @access public / public function add_non_persistent_groups( $groups ) { if ( ! is_array( $groups ) ) { $groups = array( $groups ) ; } $this->_non_persistent_groups = array_merge( $this->_non_persistent_groups, $groups ) ; $this->_non_persistent_groups = array_unique( $this->_non_persistent_groups ) ; } /* * Check if is in non persistent groups or not * * @since 1.8 * @access public / public function is_non_persistent( $group ) { return in_array( $group, $this->_non_persistent_groups ) ; } /* * Get the current instance object. * * @since 1.8 * @access public * @return Current class instance. */ public static function get_instance() { if ( ! isset( self::$_instance ) ) { self::$_instance = new self() ; } return self::$_instance ; } }

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