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<?php defined('SYSPATH') OR die('No direct access allowed.');
/**
* Session cache driver.
*
* Cache library config goes in the session.storage config entry:
* $config['storage'] = array(
* 'driver' => 'apc',
* 'requests' => 10000
* );
* Lifetime does not need to be set as it is
* overridden by the session expiration setting.
*
* $Id: Cache.php 4729 2009-12-29 20:35:19Z isaiah $
*
* @package Kohana
* @author Kohana Team
* @copyright (c) 2007-2009 Kohana Team
* @license http://kohanaphp.com/license
*/
class Session_Cache_Driver implements Session_Driver {
protected $cache;
protected $encrypt;
public function __construct()
{
// Load Encrypt library
if (Kohana::config('session.encryption'))
{
$this->encrypt = new Encrypt;
}
Kohana_Log::add('debug', 'Session Cache Driver Initialized');
}
public function open($path, $name)
{
$config = Kohana::config('session.storage');
if (empty($config))
{
// Load the default group
$config = Kohana::config('cache.default');
}
elseif (is_string($config))
{
$name = $config;
// Test the config group name
if (($config = Kohana::config('cache.'.$config)) === NULL)
throw new Kohana_Exception('The :group: group is not defined in your configuration.', array(':group:' => $name));
}
$config['lifetime'] = (Kohana::config('session.expiration') == 0) ? 86400 : Kohana::config('session.expiration');
$this->cache = new Cache($config);
return is_object($this->cache);
}
public function close()
{
return TRUE;
}
public function read($id)
{
$id = 'session_'.$id;
if ($data = $this->cache->get($id))
{
return Kohana::config('session.encryption') ? $this->encrypt->decode($data) : $data;
}
// Return value must be string, NOT a boolean
return '';
}
public function write($id, $data)
{
if ( ! Session::$should_save)
return TRUE;
$id = 'session_'.$id;
$data = Kohana::config('session.encryption') ? $this->encrypt->encode($data) : $data;
return $this->cache->set($id, $data);
}
public function destroy($id)
{
$id = 'session_'.$id;
return $this->cache->delete($id);
}
public function regenerate()
{
session_regenerate_id(TRUE);
// Return new session id
return session_id();
}
public function gc($maxlifetime)
{
// Just return, caches are automatically cleaned up
return TRUE;
}
} // End Session Cache Driver
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