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EDIT :: class-edd-session.php

<?php /** * EDD Session * * This is a wrapper class for WP_Session / PHP $_SESSION and handles the storage of cart items, purchase sessions, etc * * @package EDD * @subpackage Classes/Session * @copyright Copyright (c) 2015, Pippin Williamson * @license http://opensource.org/licenses/gpl-2.0.php GNU Public License * @since 1.5 */ // Exit if accessed directly if ( ! defined( 'ABSPATH' ) ) exit; /** * EDD_Session Class * * @since 1.5 */ class EDD_Session { /** * Holds our session data * * @var array * @access private * @since 1.5 */ private $session; /** * Whether to use PHP $_SESSION or WP_Session * * @var bool * @access private * @since 1.5,1 */ private $use_php_sessions = false; /** * Session index prefix * * @var string * @access private * @since 2.3 */ private $prefix = ''; /** * Get things started * * Defines our WP_Session constants, includes the necessary libraries and * retrieves the WP Session instance * * @since 1.5 */ public function __construct() { $this->use_php_sessions = $this->use_php_sessions(); if( $this->use_php_sessions ) { if( is_multisite() ) { $this->prefix = '_' . get_current_blog_id(); } // Use PHP SESSION (must be enabled via the EDD_USE_PHP_SESSIONS constant) add_action( 'init', array( $this, 'maybe_start_session' ), -2 ); } else { if( ! $this->should_start_session() ) { return; } // Use WP_Session (default) if ( ! defined( 'WP_SESSION_COOKIE' ) ) { define( 'WP_SESSION_COOKIE', 'edd_wp_session' ); } if ( ! class_exists( 'Recursive_ArrayAccess' ) ) { require_once EDD_PLUGIN_DIR . 'includes/libraries/class-recursive-arrayaccess.php'; } if ( ! class_exists( 'WP_Session' ) ) { require_once EDD_PLUGIN_DIR . 'includes/libraries/class-wp-session.php'; require_once EDD_PLUGIN_DIR . 'includes/libraries/wp-session.php'; } add_filter( 'wp_session_expiration_variant', array( $this, 'set_expiration_variant_time' ), 99999 ); add_filter( 'wp_session_expiration', array( $this, 'set_expiration_time' ), 99999 ); } if ( empty( $this->session ) && ! $this->use_php_sessions ) { add_action( 'plugins_loaded', array( $this, 'init' ), -1 ); } else { add_action( 'init', array( $this, 'init' ), -1 ); } } /** * Setup the WP_Session instance * * @access public * @since 1.5 * @return void */ public function init() { if( $this->use_php_sessions ) { $this->session = isset( $_SESSION['edd' . $this->prefix ] ) && is_array( $_SESSION['edd' . $this->prefix ] ) ? $_SESSION['edd' . $this->prefix ] : array(); } else { $this->session = WP_Session::get_instance(); } $use_cookie = $this->use_cart_cookie(); $cart = $this->get( 'edd_cart' ); $purchase = $this->get( 'edd_purchase' ); if ( $use_cookie ) { if( ! empty( $cart ) || ! empty( $purchase ) ) { $this->set_cart_cookie(); } else { $this->set_cart_cookie( false ); } } return $this->session; } /** * Retrieve session ID * * @access public * @since 1.6 * @return string Session ID */ public function get_id() { return $this->session->session_id; } /** * Retrieve a session variable * * @access public * @since 1.5 * @param string $key Session key * @return string Session variable */ public function get( $key ) { $key = sanitize_key( $key ); return isset( $this->session[ $key ] ) ? maybe_unserialize( $this->session[ $key ] ) : false; } /** * Set a session variable * * @since 1.5 * * @param string $key Session key * @param integer $value Session variable * @return string Session variable */ public function set( $key, $value ) { $key = sanitize_key( $key ); if ( is_array( $value ) ) { $this->session[ $key ] = serialize( $value ); } else { $this->session[ $key ] = $value; } if( $this->use_php_sessions ) { $_SESSION['edd' . $this->prefix ] = $this->session; } return $this->session[ $key ]; } /** * Set a cookie to identify whether the cart is empty or not * * This is for hosts and caching plugins to identify if caching should be disabled * * @access public * @since 1.8 * @param bool $set Whether to set or destroy * @return void */ public function set_cart_cookie( $set = true ) { if( ! headers_sent() ) { if( $set ) { @setcookie( 'edd_items_in_cart', '1', time() + 30 * 60, COOKIEPATH, COOKIE_DOMAIN, false ); } else { if ( isset($_COOKIE['edd_items_in_cart']) ) { @setcookie( 'edd_items_in_cart', '', time() - 3600, COOKIEPATH, COOKIE_DOMAIN, false ); } } } } /** * Force the cookie expiration variant time to 23 hours * * @access public * @since 2.0 * @param int $exp Default expiration (1 hour) * @return int */ public function set_expiration_variant_time( $exp ) { return ( 30 * 60 * 23 ); } /** * Force the cookie expiration time to 24 hours * * @access public * @since 1.9 * @param int $exp Default expiration (1 hour) * @return int Cookie expiration time */ public function set_expiration_time( $exp ) { return ( 30 * 60 * 24 ); } /** * Starts a new session if one hasn't started yet. * * @return boolean * Checks to see if the server supports PHP sessions * or if the EDD_USE_PHP_SESSIONS constant is defined * * @access public * @since 2.1 * @author Daniel J Griffiths * @return boolean $ret True if we are using PHP sessions, false otherwise */ public function use_php_sessions() { $ret = false; // If the database variable is already set, no need to run autodetection $edd_use_php_sessions = (bool) get_option( 'edd_use_php_sessions' ); if ( ! $edd_use_php_sessions ) { // Attempt to detect if the server supports PHP sessions if( function_exists( 'session_start' ) && ! ini_get( 'safe_mode' ) ) { $this->set( 'edd_use_php_sessions', 1 ); if( $this->get( 'edd_use_php_sessions' ) ) { $ret = true; // Set the database option update_option( 'edd_use_php_sessions', true ); } } } else { $ret = $edd_use_php_sessions; } // Enable or disable PHP Sessions based on the EDD_USE_PHP_SESSIONS constant if ( defined( 'EDD_USE_PHP_SESSIONS' ) && EDD_USE_PHP_SESSIONS ) { $ret = true; } else if ( defined( 'EDD_USE_PHP_SESSIONS' ) && ! EDD_USE_PHP_SESSIONS ) { $ret = false; } return (bool) apply_filters( 'edd_use_php_sessions', $ret ); } /** * Determines if a user has set the EDD_USE_CART_COOKIE * * @since 2.5 * @return bool If the store should use the edd_items_in_cart cookie to help avoid caching */ public function use_cart_cookie() { $ret = true; if ( defined( 'EDD_USE_CART_COOKIE' ) && ! EDD_USE_CART_COOKIE ) { $ret = false; } return (bool) apply_filters( 'edd_use_cart_cookie', $ret ); } /** * Determines if we should start sessions * * @since 2.5.11 * @return bool */ public function should_start_session() { $start_session = true; if( ! empty( $_SERVER[ 'REQUEST_URI' ] ) ) { $blacklist = $this->get_blacklist(); $uri = ltrim( $_SERVER[ 'REQUEST_URI' ], '/' ); $uri = untrailingslashit( $uri ); if( in_array( $uri, $blacklist ) ) { $start_session = false; } if( false !== strpos( $uri, 'feed=' ) ) { $start_session = false; } } return apply_filters( 'edd_start_session', $start_session ); } /** * Retrieve the URI blacklist * * These are the URIs where we never start sessions * * @since 2.5.11 * @return array */ public function get_blacklist() { $blacklist = apply_filters( 'edd_session_start_uri_blacklist', array( 'feed', 'feed/rss', 'feed/rss2', 'feed/rdf', 'feed/atom', 'comments/feed' ) ); // Look to see if WordPress is in a sub folder or this is a network site that uses sub folders $folder = str_replace( network_home_url(), '', get_site_url() ); if( ! empty( $folder ) ) { foreach( $blacklist as $path ) { $blacklist[] = $folder . '/' . $path; } } return $blacklist; } /** * Starts a new session if one hasn't started yet. */ public function maybe_start_session() { if( ! $this->should_start_session() ) { return; } if( ! session_id() && ! headers_sent() ) { session_start(); } } }

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