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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.1.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Auth\Storage;
use Cake\Core\InstanceConfigTrait;
use Cake\Http\Response;
use Cake\Http\ServerRequest;
/**
* Session based persistent storage for authenticated user record.
*
* @mixin \Cake\Core\InstanceConfigTrait
*/
class SessionStorage implements StorageInterface
{
use InstanceConfigTrait;
/**
* User record.
*
* Stores user record array if fetched from session or false if session
* does not have user record.
*
* @var \ArrayAccess|array|false
*/
protected $_user;
/**
* Session object.
*
* @var \Cake\Http\Session
*/
protected $_session;
/**
* Default configuration for this class.
*
* Keys:
*
* - `key` - Session key used to store user record.
* - `redirect` - Session key used to store redirect URL.
*
* @var array
*/
protected $_defaultConfig = [
'key' => 'Auth.User',
'redirect' => 'Auth.redirect'
];
/**
* Constructor.
*
* @param \Cake\Http\ServerRequest $request Request instance.
* @param \Cake\Http\Response $response Response instance.
* @param array $config Configuration list.
*/
public function __construct(ServerRequest $request, Response $response, array $config = [])
{
$this->_session = $request->getSession();
$this->setConfig($config);
}
/**
* Read user record from session.
*
* @return array|null User record if available else null.
*/
public function read()
{
if ($this->_user !== null) {
return $this->_user ?: null;
}
$this->_user = $this->_session->read($this->_config['key']) ?: false;
return $this->_user ?: null;
}
/**
* Write user record to session.
*
* The session id is also renewed to help mitigate issues with session replays.
*
* @param array|\ArrayAccess $user User record.
* @return void
*/
public function write($user)
{
$this->_user = $user;
$this->_session->renew();
$this->_session->write($this->_config['key'], $user);
}
/**
* Delete user record from session.
*
* The session id is also renewed to help mitigate issues with session replays.
*
* @return void
*/
public function delete()
{
$this->_user = false;
$this->_session->delete($this->_config['key']);
$this->_session->renew();
}
/**
* {@inheritDoc}
*/
public function redirectUrl($url = null)
{
if ($url === null) {
return $this->_session->read($this->_config['redirect']);
}
if ($url === false) {
$this->_session->delete($this->_config['redirect']);
return null;
}
$this->_session->write($this->_config['redirect'], $url);
}
}