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 <?php
 
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_OpenId
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * Abstract extension class for Zend_OpenId
  *
  * @category   Zend
  * @package    Zend_OpenId
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 abstract class Zend_OpenId_Extension
 {
 
     /**
      * Calls given function with given argument for all extensions
      *
      * @param mixed $extensions list of extensions or one extension
      * @param string $func function to be called
      * @param mixed &$params argument to pass to given funcion
      * @return bool
      */
     static public function forAll($extensions, $func, &$params)
     {
         if ($extensions !== null) {
             if (is_array($extensions)) {
                 foreach ($extensions as $ext) {
                     if ($ext instanceof Zend_OpenId_Extension) {
                         if (!$ext->$func($params)) {
                             return false;
                         }
                     } else {
                         return false;
                     }
                 }
             } else if (!is_object($extensions) ||
                        !($extensions instanceof Zend_OpenId_Extension) ||
                        !$extensions->$func($params)) {
                 return false;
             }
         }
         return true;
     }
 
     /**
      * Method to add additional data to OpenId 'checkid_immediate' or
      * 'checkid_setup' request. This method addes nothing but inherited class
      * may add additional data into request.
      *
      * @param array &$params request's var/val pairs
      * @return bool
      */
     public function prepareRequest(&$params)
     {
         return true;
     }
 
     /**
      * Method to parse OpenId 'checkid_immediate' or 'checkid_setup' request
      * and initialize object with passed data. This method parses nothing but
      * inherited class may override this method to do somthing.
      *
      * @param array $params request's var/val pairs
      * @return bool
      */
     public function parseRequest($params)
     {
         return true;
     }
 
     /**
      * Method to add additional data to OpenId 'id_res' response. This method
      * addes nothing but inherited class may add additional data into response.
      *
      * @param array &$params response's var/val pairs
      * @return bool
      */
     public function prepareResponse(&$params)
     {
         return true;
     }
 
     /**
      * Method to parse OpenId 'id_res' response and initialize object with
      * passed data. This method parses nothing but inherited class may override
      * this method to do somthing.
      *
      * @param array $params response's var/val pairs
      * @return bool
      */
     public function parseResponse($params)
     {
         return true;
     }
 
     /**
      * Method to prepare data to store it in trusted servers database.
      *
      * @param array &$data data to be stored in tusted servers database
      * @return bool
      */
     public function getTrustData(&$data)
     {
         return true;
     }
 
     /**
      * Method to check if data from trusted servers database is enough to
      * sutisfy request.
      *
      * @param array $data data from tusted servers database
      * @return bool
      */
     public function checkTrustData($data)
     {
         return true;
     }
 }