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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_Auth
  * @subpackage Zend_Auth_Adapter
  * @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    $Id$
  */
 
 
 /**
  * @see Zend_Auth_Adapter_Interface
  */
 // require_once 'Zend/Auth/Adapter/Interface.php';
 
 
 /**
  * @see Zend_OpenId_Consumer
  */
 // require_once 'Zend/OpenId/Consumer.php';
 
 
 /**
  * A Zend_Auth Authentication Adapter allowing the use of OpenID protocol as an
  * authentication mechanism
  *
  * @category   Zend
  * @package    Zend_Auth
  * @subpackage Zend_Auth_Adapter
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Auth_Adapter_OpenId implements Zend_Auth_Adapter_Interface
 {
     /**
      * The identity value being authenticated
      *
      * @var string
      */
     private $_id = null;
 
     /**
      * Reference to an implementation of a storage object
      *
      * @var Zend_OpenId_Consumer_Storage
      */
     private $_storage = null;
 
     /**
      * The URL to redirect response from server to
      *
      * @var string
      */
     private $_returnTo = null;
 
     /**
      * The HTTP URL to identify consumer on server
      *
      * @var string
      */
     private $_root = null;
 
     /**
      * Extension object or array of extensions objects
      *
      * @var string
      */
     private $_extensions = null;
 
     /**
      * The response object to perform HTTP or HTML form redirection
      *
      * @var Zend_Controller_Response_Abstract
      */
     private $_response = null;
 
     /**
      * Enables or disables interaction with user during authentication on
      * OpenID provider.
      *
      * @var bool
      */
     private $_check_immediate = false;
 
     /**
      * HTTP client to make HTTP requests
      *
      * @var Zend_Http_Client $_httpClient
      */
     private $_httpClient = null;
 
     /**
      * Constructor
      *
      * @param string $id the identity value
      * @param Zend_OpenId_Consumer_Storage $storage an optional implementation
      *        of a storage object
      * @param string $returnTo HTTP URL to redirect response from server to
      * @param string $root HTTP URL to identify consumer on server
      * @param mixed $extensions extension object or array of extensions objects
      * @param Zend_Controller_Response_Abstract $response an optional response
      *        object to perform HTTP or HTML form redirection
      */
     public function __construct($id = null,
                                 Zend_OpenId_Consumer_Storage $storage = null,
                                 $returnTo = null,
                                 $root = null,
                                 $extensions = null,
                                 Zend_Controller_Response_Abstract $response = null) {
         $this->_id         = $id;
         $this->_storage    = $storage;
         $this->_returnTo   = $returnTo;
         $this->_root       = $root;
         $this->_extensions = $extensions;
         $this->_response   = $response;
     }
 
     /**
      * Sets the value to be used as the identity
      *
      * @param  string $id the identity value
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setIdentity($id)
     {
         $this->_id = $id;
         return $this;
     }
 
     /**
      * Sets the storage implementation which will be use by OpenId
      *
      * @param  Zend_OpenId_Consumer_Storage $storage
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setStorage(Zend_OpenId_Consumer_Storage $storage)
     {
         $this->_storage = $storage;
         return $this;
     }
 
     /**
      * Sets the HTTP URL to redirect response from server to
      *
      * @param  string $returnTo
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setReturnTo($returnTo)
     {
         $this->_returnTo = $returnTo;
         return $this;
     }
 
     /**
      * Sets HTTP URL to identify consumer on server
      *
      * @param  string $root
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setRoot($root)
     {
         $this->_root = $root;
         return $this;
     }
 
     /**
      * Sets OpenID extension(s)
      *
      * @param  mixed $extensions
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setExtensions($extensions)
     {
         $this->_extensions = $extensions;
         return $this;
     }
 
     /**
      * Sets an optional response object to perform HTTP or HTML form redirection
      *
      * @param  string $response
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setResponse($response)
     {
         $this->_response = $response;
         return $this;
     }
 
     /**
      * Enables or disables interaction with user during authentication on
      * OpenID provider.
      *
      * @param  bool $check_immediate
      * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
      */
     public function setCheckImmediate($check_immediate)
     {
         $this->_check_immediate = $check_immediate;
         return $this;
     }
 
     /**
      * Sets HTTP client object to make HTTP requests
      *
      * @param Zend_Http_Client $client HTTP client object to be used
      */
     public function setHttpClient($client) {
         $this->_httpClient = $client;
     }
 
     /**
      * Authenticates the given OpenId identity.
      * Defined by Zend_Auth_Adapter_Interface.
      *
      * @throws Zend_Auth_Adapter_Exception If answering the authentication query is impossible
      * @return Zend_Auth_Result
      */
     public function authenticate() {
         $id = $this->_id;
         if (!empty($id)) {
             $consumer = new Zend_OpenId_Consumer($this->_storage);
             $consumer->setHttpClient($this->_httpClient);
             /* login() is never returns on success */
             if (!$this->_check_immediate) {
                 if (!$consumer->login($id,
                         $this->_returnTo,
                         $this->_root,
                         $this->_extensions,
                         $this->_response)) {
                     return new Zend_Auth_Result(
                         Zend_Auth_Result::FAILURE,
                         $id,
                         array("Authentication failed", $consumer->getError()));
                 }
             } else {
                 if (!$consumer->check($id,
                         $this->_returnTo,
                         $this->_root,
                         $this->_extensions,
                         $this->_response)) {
                     return new Zend_Auth_Result(
                         Zend_Auth_Result::FAILURE,
                         $id,
                         array("Authentication failed", $consumer->getError()));
                 }
             }
         } else {
             $params = (isset($_SERVER['REQUEST_METHOD']) &&
                        $_SERVER['REQUEST_METHOD']=='POST') ? $_POST: $_GET;
             $consumer = new Zend_OpenId_Consumer($this->_storage);
             $consumer->setHttpClient($this->_httpClient);
             if ($consumer->verify(
                     $params,
                     $id,
                     $this->_extensions)) {
                 return new Zend_Auth_Result(
                     Zend_Auth_Result::SUCCESS,
                     $id,
                     array("Authentication successful"));
             } else {
                 return new Zend_Auth_Result(
                     Zend_Auth_Result::FAILURE,
                     $id,
                     array("Authentication failed", $consumer->getError()));
             }
         }
     }
 
 }