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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Session;
use Zend\EventManager\EventManager;
use Zend\Session\Storage\StorageInterface as Storage;
use Zend\Session\Validator\ValidatorInterface as Validator;
/**
* Validator chain for validating sessions
*/
class ValidatorChain extends EventManager
{
/**
* @var Storage
*/
protected $storage;
/**
* Construct the validation chain
*
* Retrieves validators from session storage and attaches them.
*
* @param Storage $storage
*/
public function __construct(Storage $storage)
{
$this->storage = $storage;
$validators = $storage->getMetadata('_VALID');
if ($validators) {
foreach ($validators as $validator => $data) {
$this->attach('session.validate', array(new $validator($data), 'isValid'));
}
}
}
/**
* Attach a listener to the session validator chain
*
* @param string $event
* @param callable $callback
* @param int $priority
* @return \Zend\Stdlib\CallbackHandler
*/
public function attach($event, $callback = null, $priority = 1)
{
$context = null;
if ($callback instanceof Validator) {
$context = $callback;
} elseif (is_array($callback)) {
$test = array_shift($callback);
if ($test instanceof Validator) {
$context = $test;
}
array_unshift($callback, $test);
}
if ($context instanceof Validator) {
$data = $context->getData();
$name = $context->getName();
$this->getStorage()->setMetadata('_VALID', array($name => $data));
}
$listener = parent::attach($event, $callback, $priority);
return $listener;
}
/**
* Retrieve session storage object
*
* @return Storage
*/
public function getStorage()
{
return $this->storage;
}
}
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