%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Class LP_Session_Handler
*/
class LP_Session_Handler implements ArrayAccess {
/**
* @var int $_customer_id
*/
protected $_customer_id;
/**
* @var array $_data
*/
protected $_data = array();
/**
* @var bool $_changed
*/
protected $_changed = false;
/**
* @var string cookie name
*/
private $_cookie;
/**
* @var string session expiration timestamp
*/
private $_session_expiration;
/**
* $var bool Bool based on whether a cookie exists
*/
private $_has_cookie = false;
/**
* @var string Custom session table name
*/
private $_table;
/**
* @var null
*/
private static $_instance = null;
/**
* __get function.
*
* @param mixed $key
*
* @return mixed
*/
public function __get( $key ) {
return $this->get( $key );
}
/**
* __set function.
*
* @param mixed $key
* @param mixed $value
*/
public function __set( $key, $value ) {
//if ( $key === 'order_awaiting_payment' ) {
//}
$this->set( $key, $value );
}
/**
* __isset function.
*
* @param mixed $key
*
* @return bool
*/
public function __isset( $key ) {
return isset( $this->_data[ sanitize_key( $key ) ] );
}
/**
* __unset function.
*
* @param mixed $key
*/
public function __unset( $key ) {
if ( isset( $this->_data[ $key ] ) ) {
unset( $this->_data[ $key ] );
$this->_changed = true;
}
}
public function __construct() {
global $wpdb;
$this->_cookie = 'wp_learn_press_session_' . COOKIEHASH;
$this->_table = $wpdb->prefix . 'learnpress_sessions';
if ( $cookie = $this->get_session_cookie() ) {
$this->_customer_id = $cookie[0];
$this->_session_expiration = $cookie[1];
$this->_has_cookie = true;
if ( time() > $this->_session_expiration - HOUR_IN_SECONDS ) {
$this->set_session_expiration();
$this->update_session_timestamp( $this->_customer_id, $this->_session_expiration );
}
} else {
$this->set_session_expiration();
$this->_customer_id = $this->generate_customer_id();
}
$this->_data = $this->get_session_data();
add_action( 'learn_press_set_cart_cookies', array( $this, 'set_customer_session_cookie' ), 10 );
add_action( 'learn_press_cleanup_sessions', array( $this, 'cleanup_sessions' ), 10 );
add_action( 'shutdown', array( $this, 'save_data' ), 20 );
add_action( 'wp_logout', array( $this, 'destroy_session' ) );
if ( ! is_user_logged_in() ) {
//add_filter( 'nonce_user_logged_out', array( $this, 'nonce_user_logged_out' ) );
}
}
public function set_customer_session_cookie( $set ) {
if ( $set ) {
// Set/renew our cookie
$to_hash = $this->_customer_id . '|' . $this->_session_expiration;
$cookie_hash = hash_hmac( 'md5', $to_hash, wp_hash( $to_hash ) );
$cookie_value = $this->_customer_id . '||' . $this->_session_expiration . '||' . $cookie_hash;
$this->_has_cookie = true;
// Set the cookie
learn_press_setcookie( $this->_cookie, $cookie_value, $this->_session_expiration, apply_filters( 'learn_press_session_use_secure_cookie', false ) );
}
}
public function has_session() {
return isset( $_COOKIE[ $this->_cookie ] ) || $this->_has_cookie || is_user_logged_in();
}
public function set_session_expiration() {
$this->_session_expiration = time() + intval( apply_filters( 'learn_press_session_expiration', 60 * 60 * 48 ) );
}
public function generate_customer_id() {
if ( is_user_logged_in() ) {
return get_current_user_id();
} else {
require_once( ABSPATH . 'wp-includes/class-phpass.php' );
$hasher = new PasswordHash( 12, false );
return md5( $hasher->get_random_bytes( 32 ) );
}
}
public function get_session_cookie() {
if ( empty( $_COOKIE[ $this->_cookie ] ) || ! is_string( $_COOKIE[ $this->_cookie ] ) ) {
return false;
}
list( $customer_id, $session_expiration, $cookie_hash ) = explode( '||', $_COOKIE[ $this->_cookie ] );
$to_hash = $customer_id . '|' . $session_expiration;
$hash = hash_hmac( 'md5', $to_hash, wp_hash( $to_hash ) );
if ( empty( $cookie_hash ) || ! hash_equals( $hash, $cookie_hash ) ) {
return false;
}
return array( $customer_id, $session_expiration, $cookie_hash );
}
public function get_session_data() {
return $this->has_session() ? (array) $this->get_session( $this->_customer_id, array() ) : array();
}
public function get_cache_prefix( $group = LP_SESSION_CACHE_GROUP ) {
$prefix = wp_cache_get( 'learn_press_' . $group . '_cache_prefix', $group );
if ( false === $prefix ) {
$prefix = 1;
wp_cache_set( 'learn_press_' . $group . '_cache_prefix', $prefix, $group );
}
return 'learn_press_cache_' . $prefix . '_';
}
/**
* Increment group cache prefix (invalidates cache).
*
* @param string $group
*/
public function incr_cache_prefix( $group ) {
wp_cache_incr( 'learn_press_' . $group . '_cache_prefix', 1, $group );
}
public function save_data() {
if ( $this->_changed && $this->has_session() ) {
global $wpdb;
$wpdb->replace(
$this->_table,
array(
'session_key' => $this->_customer_id,
'session_value' => maybe_serialize( $this->_data ),
'session_expiry' => $this->_session_expiration
),
array(
'%s',
'%s',
'%d'
)
);
// Set cache
wp_cache_set( $this->get_cache_prefix() . $this->_customer_id, $this->_data, LP_SESSION_CACHE_GROUP, $this->_session_expiration - time() );
// Mark session clean after saving
$this->_changed = false;
}
}
public function destroy_session() {
if ( $id = $this->get( 'temp_user' ) ) {
delete_user_meta( $id, '_lp_expiration' );
}
// Clear cookie
learn_press_setcookie( $this->_cookie, '', time() - YEAR_IN_SECONDS, apply_filters( 'learn_press_session_secure_cookie', false ) );
$this->delete_session( $this->_customer_id );
// Clear cart
$this->set( 'cart', '' );
$this->set( 'temp_user', '' );
// Clear data
$this->_data = array();
$this->_changed = false;
$this->_customer_id = $this->generate_customer_id();
}
public function nonce_user_logged_out( $uid ) {
return $this->has_session() && $this->_customer_id ? $this->_customer_id : $uid;
}
public function cleanup_sessions() {
global $wpdb;
if ( ! defined( 'WP_SETUP_CONFIG' ) && ! defined( 'WP_INSTALLING' ) ) {
// Delete expired sessions
$wpdb->query( $wpdb->prepare( "DELETE FROM $this->_table WHERE session_expiry < %d", time() ) );
// Invalidate cache
$this->incr_cache_prefix( LP_SESSION_CACHE_GROUP );
}
}
public function get_session( $customer_id, $default = false ) {
global $wpdb;
if ( defined( 'WP_SETUP_CONFIG' ) ) {
return false;
}
// Try get it from the cache, it will return false if not present or if object cache not in use
$value = wp_cache_get( $this->get_cache_prefix() . $customer_id, LP_SESSION_CACHE_GROUP );
///echo "KEY:" . $this->get_cache_prefix() . $customer_id . "]";
if ( false === $value ) {
$q = $wpdb->prepare( "SELECT session_value FROM $this->_table WHERE session_key = %s", $customer_id );
$value = $wpdb->get_var( $q );
if ( is_null( $value ) ) {
$value = $default;
}
wp_cache_add( $this->get_cache_prefix() . $customer_id, $value, LP_SESSION_CACHE_GROUP, $this->_session_expiration - time() );
}
return LP_Helper::maybe_unserialize( $value );
}
public function delete_session( $customer_id ) {
global $wpdb;
wp_cache_delete( $this->get_cache_prefix() . $customer_id, LP_SESSION_CACHE_GROUP );
$wpdb->delete(
$this->_table,
array(
'session_key' => $customer_id
)
);
}
public function update_session_timestamp( $customer_id, $timestamp ) {
global $wpdb;
$wpdb->update(
$this->_table,
array(
'session_expiry' => $timestamp
),
array(
'session_key' => $customer_id
),
array(
'%d'
)
);
}
/**
* Remove a value from session by key.
*
* @param string $key
* @param bool $force_change
*/
public function remove( $key, $force_change = false ) {
if ( ! array_key_exists( $key, $this->_data ) ) {
return;
}
unset( $this->_data[ $key ] );
$this->_changed = true;
if ( $force_change ) {
$this->save_data();
}
}
/**
* Get session value.
*
* @param string $key
* @param mixed $default
*
* @return mixed|null
*/
public function get( $key, $default = null ) {
$key = sanitize_key( $key );
return isset( $this->_data[ $key ] ) ? LP_Helper::maybe_unserialize( $this->_data[ $key ] ) : $default;
}
/**
* Set session value.
*
* @param string $key
* @param mixed $value
* @param bool $force_change
*/
public function set( $key, $value, $force_change = false ) {
if ( $value !== $this->get( $key ) ) {
$this->_data[ sanitize_key( $key ) ] = maybe_serialize( $value );
$this->_changed = true;
if ( $force_change ) {
$this->save_data();
}
}
}
public function get_customer_id() {
return $this->_customer_id;
}
public function get_session_expiration() {
return $this->_session_expiration;
}
public static function instance() {
if ( ! self::$_instance ) {
self::$_instance = new self();
}
return self::$_instance;
}
public function offsetExists( $offset ) {
return array_key_exists( $offset, $this->_data );
}
public function offsetGet( $offset ) {
return $this->get( $offset );
}
public function offsetUnset( $offset ) {
$this->remove( $offset );
}
public function offsetSet( $offset, $value ) {
$this->set( $offset, $value );
}
}
/**
* @param $key
* @param null $default
*
* @return array|string
*/
function learn_press_session_get( $key, $default = null ) {
return LP_Session_Handler::instance()->get( $key, $default );
}
/**
* @param $key
* @param $value
*/
function learn_press_session_set( $key, $value ) {
LP_Session_Handler::instance()->set( $key, $value );
}
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