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lars |
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<?php
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/* SVN FILE: $Id: session.php 8004 2009-01-16 20:15:21Z gwoo $ */
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/**
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* Session class for Cake.
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*
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* Cake abstracts the handling of sessions.
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* There are several convenient methods to access session information.
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* This class is the implementation of those methods.
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* They are mostly used by the Session Component.
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*
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* PHP versions 4 and 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://www.cakephp.org)
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* Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs
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* @since CakePHP(tm) v .0.10.0.1222
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* @version $Revision: 8004 $
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* @modifiedby $LastChangedBy: gwoo $
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* @lastmodified $Date: 2009-01-16 12:15:21 -0800 (Fri, 16 Jan 2009) $
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Database name for cake sessions.
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*
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*/
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if (!class_exists('Set')) {
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require LIBS . 'set.php';
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}
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if (!class_exists('Security')) {
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require LIBS . 'security.php';
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}
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/**
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* Session class for Cake.
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*
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* Cake abstracts the handling of sessions. There are several convenient methods to access session information.
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* This class is the implementation of those methods. They are mostly used by the Session Component.
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*
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* @package cake
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* @subpackage cake.cake.libs
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*/
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class CakeSession extends Object {
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/**
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* True if the Session is still valid
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*
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* @var boolean
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* @access public
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*/
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var $valid = false;
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/**
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* Error messages for this session
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*
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* @var array
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* @access public
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*/
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var $error = false;
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/**
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* User agent string
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*
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* @var string
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* @access protected
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*/
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var $_userAgent = '';
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/**
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* Path to where the session is active.
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*
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* @var string
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* @access public
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*/
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var $path = '/';
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/**
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* Error number of last occurred error
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*
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* @var integer
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* @access public
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*/
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var $lastError = null;
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/**
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* 'Security.level' setting, "high", "medium", or "low".
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*
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* @var string
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* @access public
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*/
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var $security = null;
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/**
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* Start time for this session.
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*
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* @var integer
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* @access public
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*/
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var $time = false;
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/**
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* Time when this session becomes invalid.
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*
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* @var integer
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* @access public
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*/
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var $sessionTime = false;
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/**
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* Keeps track of keys to watch for writes on
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*
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* @var array
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* @access public
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*/
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var $watchKeys = array();
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/**
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* Current Session id
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*
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* @var string
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* @access public
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*/
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var $id = null;
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/**
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* Constructor.
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*
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* @param string $base The base path for the Session
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* @param boolean $start Should session be started right now
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* @access public
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*/
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function __construct($base = null, $start = true) {
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if (Configure::read('Session.save') === 'database' && !class_exists('ConnectionManager')) {
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App::import('Core', 'ConnectionManager');
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}
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if (Configure::read('Session.checkAgent') === true || Configure::read('Session.checkAgent') === null) {
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if (env('HTTP_USER_AGENT') != null) {
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$this->_userAgent = md5(env('HTTP_USER_AGENT') . Configure::read('Security.salt'));
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}
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}
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$this->time = time();
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if ($start === true) {
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$this->host = env('HTTP_HOST');
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if (empty($base) || strpos($base, '?') === 0 || strpos($base, 'index.php') === 0) {
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$this->path = '/';
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} else {
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$this->path = $base;
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}
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if (strpos($this->host, ':') !== false) {
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$this->host = substr($this->host, 0, strpos($this->host, ':'));
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}
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if (!class_exists('Security')) {
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App::import('Core', 'Security');
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}
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$this->sessionTime = $this->time + (Security::inactiveMins() * Configure::read('Session.timeout'));
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$this->security = Configure::read('Security.level');
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}
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parent::__construct();
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}
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/**
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* Starts the Session.
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*
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* @param string $name Variable name to check for
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* @return boolean True if variable is there
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* @access public
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*/
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function start() {
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if (function_exists('session_write_close')) {
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session_write_close();
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}
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$this->__initSession();
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return $this->__startSession();
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}
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/**
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* Determine if Session has been started.
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*
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* @access public
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* @return boolean True if session has been started.
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*/
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function started() {
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if (isset($_SESSION)) {
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return true;
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}
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return false;
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}
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/**
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* Returns true if given variable is set in session.
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*
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* @param string $name Variable name to check for
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* @return boolean True if variable is there
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* @access public
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*/
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function check($name) {
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$var = $this->__validateKeys($name);
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if (empty($var)) {
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return false;
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}
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$result = Set::extract($_SESSION, $var);
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return isset($result);
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}
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/**
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* Returns the Session id
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*
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* @param id $name string
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* @return string Session id
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* @access public
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*/
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function id($id = null) {
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if ($id) {
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$this->id = $id;
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session_id($this->id);
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}
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if (isset($_SESSION)) {
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return session_id();
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} else {
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return $this->id;
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}
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}
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/**
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* Removes a variable from session.
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*
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* @param string $name Session variable to remove
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* @return boolean Success
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* @access public
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*/
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function del($name) {
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if ($this->check($name)) {
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if ($var = $this->__validateKeys($name)) {
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if (in_array($var, $this->watchKeys)) {
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trigger_error('Deleting session key {' . $var . '}', E_USER_NOTICE);
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}
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$this->__overwrite($_SESSION, Set::remove($_SESSION, $var));
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return ($this->check($var) == false);
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}
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}
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$this->__setError(2, "$name doesn't exist");
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return false;
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}
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/**
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* Used to write new data to _SESSION, since PHP doesn't like us setting the _SESSION var itself
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*
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* @param array $old Set of old variables => values
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* @param array $new New set of variable => value
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* @access private
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*/
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function __overwrite(&$old, $new) {
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if (!empty($old)) {
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foreach ($old as $key => $var) {
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if (!isset($new[$key])) {
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unset($old[$key]);
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}
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}
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}
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foreach ($new as $key => $var) {
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$old[$key] = $var;
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}
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}
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/**
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* Return error description for given error number.
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*
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* @param integer $errorNumber Error to set
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* @return string Error as string
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* @access private
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*/
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function __error($errorNumber) {
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if (!is_array($this->error) || !array_key_exists($errorNumber, $this->error)) {
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return false;
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} else {
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return $this->error[$errorNumber];
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}
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}
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/**
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* Returns last occurred error as a string, if any.
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*
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* @return mixed Error description as a string, or false.
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* @access public
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*/
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function error() {
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if ($this->lastError) {
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return $this->__error($this->lastError);
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} else {
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return false;
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}
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}
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/**
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* Returns true if session is valid.
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*
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* @return boolean Success
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* @access public
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*/
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function valid() {
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if ($this->read('Config')) {
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if ((Configure::read('Session.checkAgent') === false || $this->_userAgent == $this->read('Config.userAgent')) && $this->time <= $this->read('Config.time')) {
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if ($this->error === false) {
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$this->valid = true;
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}
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} else {
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$this->valid = false;
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$this->__setError(1, 'Session Highjacking Attempted !!!');
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}
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}
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return $this->valid;
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}
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/**
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* Returns given session variable, or all of them, if no parameters given.
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*
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* @param mixed $name The name of the session variable (or a path as sent to Set.extract)
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* @return mixed The value of the session variable
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* @access public
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*/
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function read($name = null) {
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if (is_null($name)) {
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return $this->__returnSessionVars();
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}
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if (empty($name)) {
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return false;
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}
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$result = Set::extract($_SESSION, $name);
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if (!is_null($result)) {
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return $result;
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}
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$this->__setError(2, "$name doesn't exist");
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return null;
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}
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/**
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* Returns all session variables.
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*
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* @return mixed Full $_SESSION array, or false on error.
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* @access private
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*/
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function __returnSessionVars() {
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if (!empty($_SESSION)) {
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return $_SESSION;
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}
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$this->__setError(2, "No Session vars set");
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return false;
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}
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/**
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* Tells Session to write a notification when a certain session path or subpath is written to
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*
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* @param mixed $var The variable path to watch
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* @return void
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* @access public
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*/
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function watch($var) {
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$var = $this->__validateKeys($var);
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if (empty($var)) {
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return false;
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}
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$this->watchKeys[] = $var;
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}
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/**
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* Tells Session to stop watching a given key path
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*
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* @param mixed $var The variable path to watch
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* @return void
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* @access public
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*/
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function ignore($var) {
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$var = $this->__validateKeys($var);
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if (!in_array($var, $this->watchKeys)) {
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return;
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}
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foreach ($this->watchKeys as $i => $key) {
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if ($key == $var) {
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unset($this->watchKeys[$i]);
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$this->watchKeys = array_values($this->watchKeys);
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return;
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}
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}
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}
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374 |
/**
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* Writes value to given session variable name.
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*
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* @param mixed $name Name of variable
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* @param string $value Value to write
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* @return boolean True if the write was successful, false if the write failed
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380 |
* @access public
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381 |
*/
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382 |
function write($name, $value) {
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383 |
$var = $this->__validateKeys($name);
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384 |
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385 |
if (empty($var)) {
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return false;
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387 |
}
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388 |
if (in_array($var, $this->watchKeys)) {
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|
389 |
trigger_error('Writing session key {' . $var . '}: ' . Debugger::exportVar($value), E_USER_NOTICE);
|
|
|
390 |
}
|
|
|
391 |
$this->__overwrite($_SESSION, Set::insert($_SESSION, $var, $value));
|
|
|
392 |
return (Set::extract($_SESSION, $var) === $value);
|
|
|
393 |
}
|
|
|
394 |
/**
|
|
|
395 |
* Helper method to destroy invalid sessions.
|
|
|
396 |
*
|
|
|
397 |
* @return void
|
|
|
398 |
* @access public
|
|
|
399 |
*/
|
|
|
400 |
function destroy() {
|
|
|
401 |
$_SESSION = array();
|
|
|
402 |
$this->__construct($this->path);
|
|
|
403 |
$this->start();
|
|
|
404 |
$this->renew();
|
|
|
405 |
$this->_checkValid();
|
|
|
406 |
}
|
|
|
407 |
/**
|
|
|
408 |
* Helper method to initialize a session, based on Cake core settings.
|
|
|
409 |
*
|
|
|
410 |
* @access private
|
|
|
411 |
*/
|
|
|
412 |
function __initSession() {
|
|
|
413 |
$iniSet = function_exists('ini_set');
|
|
|
414 |
|
|
|
415 |
if ($iniSet && env('HTTPS')) {
|
|
|
416 |
ini_set('session.cookie_secure', 1);
|
|
|
417 |
}
|
|
|
418 |
|
|
|
419 |
switch ($this->security) {
|
|
|
420 |
case 'high':
|
|
|
421 |
$this->cookieLifeTime = 0;
|
|
|
422 |
if ($iniSet) {
|
|
|
423 |
ini_set('session.referer_check', $this->host);
|
|
|
424 |
}
|
|
|
425 |
break;
|
|
|
426 |
case 'medium':
|
|
|
427 |
$this->cookieLifeTime = 7 * 86400;
|
|
|
428 |
if ($iniSet) {
|
|
|
429 |
ini_set('session.referer_check', $this->host);
|
|
|
430 |
}
|
|
|
431 |
break;
|
|
|
432 |
case 'low':
|
|
|
433 |
default:
|
|
|
434 |
$this->cookieLifeTime = 788940000;
|
|
|
435 |
break;
|
|
|
436 |
}
|
|
|
437 |
|
|
|
438 |
switch (Configure::read('Session.save')) {
|
|
|
439 |
case 'cake':
|
|
|
440 |
if (empty($_SESSION)) {
|
|
|
441 |
if ($iniSet) {
|
|
|
442 |
ini_set('session.use_trans_sid', 0);
|
|
|
443 |
ini_set('url_rewriter.tags', '');
|
|
|
444 |
ini_set('session.serialize_handler', 'php');
|
|
|
445 |
ini_set('session.use_cookies', 1);
|
|
|
446 |
ini_set('session.name', Configure::read('Session.cookie'));
|
|
|
447 |
ini_set('session.cookie_lifetime', $this->cookieLifeTime);
|
|
|
448 |
ini_set('session.cookie_path', $this->path);
|
|
|
449 |
ini_set('session.auto_start', 0);
|
|
|
450 |
ini_set('session.save_path', TMP . 'sessions');
|
|
|
451 |
}
|
|
|
452 |
}
|
|
|
453 |
break;
|
|
|
454 |
case 'database':
|
|
|
455 |
if (empty($_SESSION)) {
|
|
|
456 |
if (Configure::read('Session.table') === null) {
|
|
|
457 |
trigger_error(__("You must set the all Configure::write('Session.*') in core.php to use database storage"), E_USER_WARNING);
|
|
|
458 |
exit();
|
|
|
459 |
} elseif (Configure::read('Session.database') === null) {
|
|
|
460 |
Configure::write('Session.database', 'default');
|
|
|
461 |
}
|
|
|
462 |
if ($iniSet) {
|
|
|
463 |
ini_set('session.use_trans_sid', 0);
|
|
|
464 |
ini_set('url_rewriter.tags', '');
|
|
|
465 |
ini_set('session.save_handler', 'user');
|
|
|
466 |
ini_set('session.serialize_handler', 'php');
|
|
|
467 |
ini_set('session.use_cookies', 1);
|
|
|
468 |
ini_set('session.name', Configure::read('Session.cookie'));
|
|
|
469 |
ini_set('session.cookie_lifetime', $this->cookieLifeTime);
|
|
|
470 |
ini_set('session.cookie_path', $this->path);
|
|
|
471 |
ini_set('session.auto_start', 0);
|
|
|
472 |
}
|
|
|
473 |
}
|
|
|
474 |
session_set_save_handler(array('CakeSession','__open'),
|
|
|
475 |
array('CakeSession', '__close'),
|
|
|
476 |
array('CakeSession', '__read'),
|
|
|
477 |
array('CakeSession', '__write'),
|
|
|
478 |
array('CakeSession', '__destroy'),
|
|
|
479 |
array('CakeSession', '__gc'));
|
|
|
480 |
break;
|
|
|
481 |
case 'php':
|
|
|
482 |
if (empty($_SESSION)) {
|
|
|
483 |
if ($iniSet) {
|
|
|
484 |
ini_set('session.use_trans_sid', 0);
|
|
|
485 |
ini_set('session.name', Configure::read('Session.cookie'));
|
|
|
486 |
ini_set('session.cookie_lifetime', $this->cookieLifeTime);
|
|
|
487 |
ini_set('session.cookie_path', $this->path);
|
|
|
488 |
}
|
|
|
489 |
}
|
|
|
490 |
break;
|
|
|
491 |
case 'cache':
|
|
|
492 |
if (empty($_SESSION)) {
|
|
|
493 |
if (!class_exists('Cache')) {
|
|
|
494 |
uses('Cache');
|
|
|
495 |
}
|
|
|
496 |
if ($iniSet) {
|
|
|
497 |
ini_set('session.use_trans_sid', 0);
|
|
|
498 |
ini_set('url_rewriter.tags', '');
|
|
|
499 |
ini_set('session.save_handler', 'user');
|
|
|
500 |
ini_set('session.use_cookies', 1);
|
|
|
501 |
ini_set('session.name', Configure::read('Session.cookie'));
|
|
|
502 |
ini_set('session.cookie_lifetime', $this->cookieLifeTime);
|
|
|
503 |
ini_set('session.cookie_path', $this->path);
|
|
|
504 |
}
|
|
|
505 |
}
|
|
|
506 |
session_set_save_handler(array('CakeSession','__open'),
|
|
|
507 |
array('CakeSession', '__close'),
|
|
|
508 |
array('Cache', 'read'),
|
|
|
509 |
array('Cache', 'write'),
|
|
|
510 |
array('Cache', 'delete'),
|
|
|
511 |
array('CakeSession', '__gc'));
|
|
|
512 |
break;
|
|
|
513 |
default:
|
|
|
514 |
if (empty($_SESSION)) {
|
|
|
515 |
$config = CONFIGS . Configure::read('Session.save') . '.php';
|
|
|
516 |
|
|
|
517 |
if (is_file($config)) {
|
|
|
518 |
require_once ($config);
|
|
|
519 |
}
|
|
|
520 |
}
|
|
|
521 |
break;
|
|
|
522 |
}
|
|
|
523 |
}
|
|
|
524 |
/**
|
|
|
525 |
* Helper method to start a session
|
|
|
526 |
*
|
|
|
527 |
* @access private
|
|
|
528 |
*/
|
|
|
529 |
function __startSession() {
|
|
|
530 |
if (headers_sent()) {
|
|
|
531 |
if (empty($_SESSION)) {
|
|
|
532 |
$_SESSION = array();
|
|
|
533 |
}
|
|
|
534 |
return false;
|
|
|
535 |
} elseif (!isset($_SESSION)) {
|
|
|
536 |
session_cache_limiter ("must-revalidate");
|
|
|
537 |
session_start();
|
|
|
538 |
header ('P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"');
|
|
|
539 |
return true;
|
|
|
540 |
} else {
|
|
|
541 |
session_start();
|
|
|
542 |
return true;
|
|
|
543 |
}
|
|
|
544 |
}
|
|
|
545 |
/**
|
|
|
546 |
* Helper method to create a new session.
|
|
|
547 |
*
|
|
|
548 |
* @return void
|
|
|
549 |
* @access protected
|
|
|
550 |
*/
|
|
|
551 |
function _checkValid() {
|
|
|
552 |
if ($this->read('Config')) {
|
|
|
553 |
if ((Configure::read('Session.checkAgent') === false || $this->_userAgent == $this->read('Config.userAgent')) && $this->time <= $this->read('Config.time')) {
|
|
|
554 |
$time = $this->read('Config.time');
|
|
|
555 |
$this->write('Config.time', $this->sessionTime);
|
|
|
556 |
|
|
|
557 |
if (Configure::read('Security.level') === 'high') {
|
|
|
558 |
$check = $this->read('Config.timeout');
|
|
|
559 |
$check = $check - 1;
|
|
|
560 |
$this->write('Config.timeout', $check);
|
|
|
561 |
|
|
|
562 |
if (time() > ($time - (Security::inactiveMins() * Configure::read('Session.timeout')) + 2) || $check < 1) {
|
|
|
563 |
$this->renew();
|
|
|
564 |
$this->write('Config.timeout', 10);
|
|
|
565 |
}
|
|
|
566 |
}
|
|
|
567 |
$this->valid = true;
|
|
|
568 |
} else {
|
|
|
569 |
$this->destroy();
|
|
|
570 |
$this->valid = false;
|
|
|
571 |
$this->__setError(1, 'Session Highjacking Attempted !!!');
|
|
|
572 |
}
|
|
|
573 |
} else {
|
|
|
574 |
srand ((double)microtime() * 1000000);
|
|
|
575 |
$this->write('Config.userAgent', $this->_userAgent);
|
|
|
576 |
$this->write('Config.time', $this->sessionTime);
|
|
|
577 |
$this->write('Config.rand', mt_rand());
|
|
|
578 |
$this->write('Config.timeout', 10);
|
|
|
579 |
$this->valid = true;
|
|
|
580 |
$this->__setError(1, 'Session is valid');
|
|
|
581 |
}
|
|
|
582 |
}
|
|
|
583 |
/**
|
|
|
584 |
* Helper method to restart a session.
|
|
|
585 |
*
|
|
|
586 |
* @return void
|
|
|
587 |
* @access private
|
|
|
588 |
*/
|
|
|
589 |
function __regenerateId() {
|
|
|
590 |
$oldSessionId = session_id();
|
|
|
591 |
if ($oldSessionId) {
|
|
|
592 |
$sessionpath = session_save_path();
|
|
|
593 |
if (empty($sessionpath)) {
|
|
|
594 |
$sessionpath = "/tmp";
|
|
|
595 |
}
|
|
|
596 |
if (session_id() != "" || isset($_COOKIE[session_name()])) {
|
|
|
597 |
setcookie(Configure::read('Session.cookie'), '', time() - 42000, $this->path);
|
|
|
598 |
}
|
|
|
599 |
session_regenerate_id(true);
|
|
|
600 |
if (PHP_VERSION < 5.1) {
|
|
|
601 |
$newSessid = session_id();
|
|
|
602 |
|
|
|
603 |
if (function_exists('session_write_close')) {
|
|
|
604 |
session_write_close();
|
|
|
605 |
}
|
|
|
606 |
$this->__initSession();
|
|
|
607 |
session_id($oldSessionId);
|
|
|
608 |
session_start();
|
|
|
609 |
session_destroy();
|
|
|
610 |
$file = $sessionpath . DS . "sess_$oldSessionId";
|
|
|
611 |
@unlink($file);
|
|
|
612 |
$this->__initSession();
|
|
|
613 |
session_id($newSessid);
|
|
|
614 |
session_start();
|
|
|
615 |
}
|
|
|
616 |
}
|
|
|
617 |
}
|
|
|
618 |
/**
|
|
|
619 |
* Restarts this session.
|
|
|
620 |
*
|
|
|
621 |
* @access public
|
|
|
622 |
*/
|
|
|
623 |
function renew() {
|
|
|
624 |
$this->__regenerateId();
|
|
|
625 |
}
|
|
|
626 |
/**
|
|
|
627 |
* Validate that the $name is in correct dot notation
|
|
|
628 |
* example: $name = 'ControllerName.key';
|
|
|
629 |
*
|
|
|
630 |
* @param string $name Session key names as string.
|
|
|
631 |
* @return mixed false is $name is not correct format, or $name if it is correct
|
|
|
632 |
* @access private
|
|
|
633 |
*/
|
|
|
634 |
function __validateKeys($name) {
|
|
|
635 |
if (is_string($name) && preg_match("/^[ 0-9a-zA-Z._-]*$/", $name)) {
|
|
|
636 |
return $name;
|
|
|
637 |
}
|
|
|
638 |
$this->__setError(3, "$name is not a string");
|
|
|
639 |
return false;
|
|
|
640 |
}
|
|
|
641 |
/**
|
|
|
642 |
* Helper method to set an internal error message.
|
|
|
643 |
*
|
|
|
644 |
* @param integer $errorNumber Number of the error
|
|
|
645 |
* @param string $errorMessage Description of the error
|
|
|
646 |
* @return void
|
|
|
647 |
* @access private
|
|
|
648 |
*/
|
|
|
649 |
function __setError($errorNumber, $errorMessage) {
|
|
|
650 |
if ($this->error === false) {
|
|
|
651 |
$this->error = array();
|
|
|
652 |
}
|
|
|
653 |
$this->error[$errorNumber] = $errorMessage;
|
|
|
654 |
$this->lastError = $errorNumber;
|
|
|
655 |
}
|
|
|
656 |
/**
|
|
|
657 |
* Method called on open of a database session.
|
|
|
658 |
*
|
|
|
659 |
* @return boolean Success
|
|
|
660 |
* @access private
|
|
|
661 |
*/
|
|
|
662 |
function __open() {
|
|
|
663 |
return true;
|
|
|
664 |
}
|
|
|
665 |
/**
|
|
|
666 |
* Method called on close of a database session.
|
|
|
667 |
*
|
|
|
668 |
* @return boolean Success
|
|
|
669 |
* @access private
|
|
|
670 |
*/
|
|
|
671 |
function __close() {
|
|
|
672 |
$probability = mt_rand(1, 150);
|
|
|
673 |
if ($probability <= 3) {
|
|
|
674 |
switch (Configure::read('Session.save')) {
|
|
|
675 |
case 'cache':
|
|
|
676 |
Cache::gc();
|
|
|
677 |
break;
|
|
|
678 |
default:
|
|
|
679 |
CakeSession::__gc();
|
|
|
680 |
break;
|
|
|
681 |
}
|
|
|
682 |
}
|
|
|
683 |
return true;
|
|
|
684 |
}
|
|
|
685 |
/**
|
|
|
686 |
* Method used to read from a database session.
|
|
|
687 |
*
|
|
|
688 |
* @param mixed $key The key of the value to read
|
|
|
689 |
* @return mixed The value of the key or false if it does not exist
|
|
|
690 |
* @access private
|
|
|
691 |
*/
|
|
|
692 |
function __read($key) {
|
|
|
693 |
$db =& ConnectionManager::getDataSource(Configure::read('Session.database'));
|
|
|
694 |
$table = $db->fullTableName(Configure::read('Session.table'), false);
|
|
|
695 |
$row = $db->query("SELECT " . $db->name($table.'.data') . " FROM " . $db->name($table) . " WHERE " . $db->name($table.'.id') . " = " . $db->value($key), false);
|
|
|
696 |
|
|
|
697 |
if ($row && !isset($row[0][$table]) && isset($row[0][0])) {
|
|
|
698 |
$table = 0;
|
|
|
699 |
}
|
|
|
700 |
|
|
|
701 |
if ($row && $row[0][$table]['data']) {
|
|
|
702 |
return $row[0][$table]['data'];
|
|
|
703 |
} else {
|
|
|
704 |
return false;
|
|
|
705 |
}
|
|
|
706 |
}
|
|
|
707 |
/**
|
|
|
708 |
* Helper function called on write for database sessions.
|
|
|
709 |
*
|
|
|
710 |
* @param mixed $key The name of the var
|
|
|
711 |
* @param mixed $value The value of the var
|
|
|
712 |
* @return boolean Success
|
|
|
713 |
* @access private
|
|
|
714 |
*/
|
|
|
715 |
function __write($key, $value) {
|
|
|
716 |
$db =& ConnectionManager::getDataSource(Configure::read('Session.database'));
|
|
|
717 |
$table = $db->fullTableName(Configure::read('Session.table'));
|
|
|
718 |
|
|
|
719 |
switch (Configure::read('Security.level')) {
|
|
|
720 |
case 'high':
|
|
|
721 |
$factor = 10;
|
|
|
722 |
break;
|
|
|
723 |
case 'medium':
|
|
|
724 |
$factor = 100;
|
|
|
725 |
break;
|
|
|
726 |
case 'low':
|
|
|
727 |
$factor = 300;
|
|
|
728 |
break;
|
|
|
729 |
default:
|
|
|
730 |
$factor = 10;
|
|
|
731 |
break;
|
|
|
732 |
}
|
|
|
733 |
$expires = time() + Configure::read('Session.timeout') * $factor;
|
|
|
734 |
$row = $db->query("SELECT COUNT(id) AS count FROM " . $db->name($table) . " WHERE "
|
|
|
735 |
. $db->name('id') . " = "
|
|
|
736 |
. $db->value($key), false);
|
|
|
737 |
|
|
|
738 |
if ($row[0][0]['count'] > 0) {
|
|
|
739 |
$db->execute("UPDATE " . $db->name($table) . " SET " . $db->name('data') . " = "
|
|
|
740 |
. $db->value($value) . ", " . $db->name('expires') . " = "
|
|
|
741 |
. $db->value($expires) . " WHERE " . $db->name('id') . " = "
|
|
|
742 |
. $db->value($key));
|
|
|
743 |
} else {
|
|
|
744 |
$db->execute("INSERT INTO " . $db->name($table) . " (" . $db->name('data') . ","
|
|
|
745 |
. $db->name('expires') . "," . $db->name('id')
|
|
|
746 |
. ") VALUES (" . $db->value($value) . ", " . $db->value($expires) . ", "
|
|
|
747 |
. $db->value($key) . ")");
|
|
|
748 |
}
|
|
|
749 |
return true;
|
|
|
750 |
}
|
|
|
751 |
/**
|
|
|
752 |
* Method called on the destruction of a database session.
|
|
|
753 |
*
|
|
|
754 |
* @param integer $key Key that uniquely identifies session in database
|
|
|
755 |
* @return boolean Success
|
|
|
756 |
* @access private
|
|
|
757 |
*/
|
|
|
758 |
function __destroy($key) {
|
|
|
759 |
$db =& ConnectionManager::getDataSource(Configure::read('Session.database'));
|
|
|
760 |
$table = $db->fullTableName(Configure::read('Session.table'));
|
|
|
761 |
$db->execute("DELETE FROM " . $db->name($table) . " WHERE " . $db->name($table.'.id') . " = " . $db->value($key));
|
|
|
762 |
return true;
|
|
|
763 |
}
|
|
|
764 |
/**
|
|
|
765 |
* Helper function called on gc for database sessions.
|
|
|
766 |
*
|
|
|
767 |
* @param integer $expires Timestamp (defaults to current time)
|
|
|
768 |
* @return boolean Success
|
|
|
769 |
* @access private
|
|
|
770 |
*/
|
|
|
771 |
function __gc($expires = null) {
|
|
|
772 |
$db =& ConnectionManager::getDataSource(Configure::read('Session.database'));
|
|
|
773 |
$table = $db->fullTableName(Configure::read('Session.table'));
|
|
|
774 |
$db->execute("DELETE FROM " . $db->name($table) . " WHERE " . $db->name($table.'.expires') . " < ". $db->value(time()));
|
|
|
775 |
return true;
|
|
|
776 |
}
|
|
|
777 |
}
|
|
|
778 |
?>
|