Using OpenID with Zend Framework

I want my website to do exactly what Stackoverflow does with openId.

I'm combing through sources, and I have done this before with facebook, but not making much progress with OpenID.

What I would like to do is just detect if someone has logged into Google, and if they have get some identify开发者_JAVA技巧ing information, and allow them to federate into my site.

Can anyone suggest any tutorials or Code snippets, and should I use Zends Libraries ?

-P

/**
 * SM's code library
 * 
 * @category    
 * @package     
 * @subpackage  
 * @copyright   Copyright (c) 2009 Pavel V Egorov
 * @author      Pavel V Egorov <epavel@gmail.com>
 * @link        http://epavel.ru/
 * @since       29.04.2010
 */

/*
 * в configs/application.ini 
 * 
 * ;php-openid library
 * includePaths[] = APPLICATION_PATH "/../include/php-openid-2.1.3"
 * autoloadernamespaces[] = Auth_ 
 */


define ('Auth_Yadis_CURL_OVERRIDE', true);
define ('Auth_OpenID_RAND_SOURCE', null);

class Smapp_Auth_Adapter_OpenId implements Zend_Auth_Adapter_Interface
{
    /**
     * The identity value being authenticated
     *
     * @var string
     */
    protected $_id = null;

    /**
     * Reference to an implementation of a storage object
     *
     * @var Auth_OpenID_OpenIDStore
     */
    protected $_storage = null;

    /**
     * The URL to redirect response from server to
     *
     * @var string
     */
    protected $_returnTo = null;

    /**
     * The HTTP URL to identify consumer on server
     *
     * @var string
     */
    protected $_root = null;

    /**
     * Extension object or array of extensions objects
     *
     * @var string
     */
    protected $_extensions = null;

    /**
     * The response object to perform HTTP or HTML form redirection
     *
     * @var Zend_Controller_Response_Abstract
     */
    protected $_response = null;

    /**
     * Enables or disables interaction with user during authentication on
     * OpenID provider.
     *
     * @var bool
     */
    protected $_check_immediate = false;

    /**
     * Constructor
     *
     * @param string $id the identity value
     * @param Auth_OpenID_OpenIDStore $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 Auth_OpenID_Extension extension object or array of extensions objects
     * @param Zend_Controller_Response_Abstract $response an optional response
     *        object to perform HTTP or HTML form redirection
     * @return void
     */
    public function __construct($id = null,
                                Auth_OpenID_OpenIDStore $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;

        //нужно потому что автозагрузчик зенда найти не может. там куча классов в одном файле
        require_once 'Auth/OpenID/SReg.php';
        require_once 'Auth/OpenID/PAPE.php';
    }

    /**
     * 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;

        $consumer = new Auth_OpenID_Consumer($this->_storage);

        if (!empty($id)) {

            $authRequest = $consumer->begin($id);

            if (is_null($authRequest)) {
                return new Zend_Auth_Result(
                        Zend_Auth_Result::FAILURE,
                        $id,
                        array("Authentication failed", 'Unknown error'));
            }

            if (Auth_OpenID::isFailure($authRequest)) {
                return new Zend_Auth_Result(
                        Zend_Auth_Result::FAILURE,
                        $id,
                        array("Authentication failed", "Could not redirect to server: " . $authRequest->message));
            }

            $redirectUrl = $authRequest->redirectUrl($this->_root, $this->_returnTo);

            if (Auth_OpenID::isFailure($redirectUrl)) {
                return new Zend_Auth_Result(
                        Zend_Auth_Result::FAILURE,
                        $id,
                        array("Authentication failed", $redirectUrl->message));
            }

            Zend_OpenId::redirect($redirectUrl);

        } else {

            $response = $consumer->complete(Zend_OpenId::selfUrl());

            switch($response->status) {

                case Auth_OpenID_CANCEL:
                case Auth_OpenID_FAILURE:
                    return new Zend_Auth_Result(
                            Zend_Auth_Result::FAILURE,
                            null,
                            array("Authentication failed. " . @$response->message));
                break;

                case Auth_OpenID_SUCCESS:
                    return $this->_constructSuccessfulResult($response);
                break;
            }
        }
    }

    /**
     * @param Auth_OpenID_ConsumerResponse $response
     * @return Zend_Auth_Result
     */
    protected function _constructSuccessfulResult(Auth_OpenID_ConsumerResponse $response)
    {
        $identity = array();

        $identity['openid_identity'] = $response->getDisplayIdentifier();

        if ($response->endpoint->canonicalID) {
            $identity['openid_op_endpoint'] = $response->endpoint->canonicalID;    
        }
        if ($sreg = Auth_OpenID_SRegResponse::fromSuccessResponse($response)) {
            $identity['sreg'] = $sreg->contents();
        }
        if ($pape = Auth_OpenID_PAPE_Response::fromSuccessResponse($response)) {
            $identity['pape'] = (array)$pape;
        }

        return new Zend_Auth_Result(Zend_Auth_Result::SUCCESS, $identity, array("Authentication successful"));
    }

    /**
     * Sets the storage implementation which will be use by OpenId
     *
     * @param  Auth_OpenID_OpenIDStore $storage
     * @return Smapp_Auth_Adapter_OpenId Provides a fluent interface
     */
    public function setStorage(Auth_OpenID_OpenIDStore $storage)
    {
        $this->_storage = $storage;
        return $this;
    }

    /**
     * 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 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 $root
     * @return Zend_Auth_Adapter_OpenId Provides a fluent interface
     */
    public function setResponse($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;
    }
}

real world example http://zonabarahla.ru/users/auth/login

source: http://zonabarahla.ru/users/auth/login?show-me-the-truth

is uses http://openidenabled.com/files/php-openid/packages/php-openid-2.1.3.zip

class Users_View_Helper_UsersLinker extends Zend_View_Helper_Abstract
{
    /**
     * @var Zend_View_Helper_Url
     */
    protected static $_urlHelper;

    /**
     * @return Users_View_Helper_UsersLinker
     */
    public function usersLinker()
    {
        return $this;
    }


    public function viewProfile($id) 
    {
        $options = array(
            'controller'    => 'view',
            'action'        => 'profile',
            'id'            => (int)$id
        );
        return $this->_url($options);
    }

    public function viewList()
    {        
        $options = array(
            'controller'    => 'view',
            'action'        => 'list',
        );
        return $this->_url($options);
    }

    public function crudUpdate($id)
    {
        $options = array(
            'controller'    => 'crud',
            'action'        => 'update',
            'id'            => (int)$id
        );
        return $this->_url($options);
    }


    public function login()
    {
        $options = array(
            'controller'    => 'auth',
            'action'        => 'login',
        );
        $url = $this->_url($options);
        return $url;
    }

    public function logout()
    {
        $options = array(
            'controller'    => 'auth',
            'action'        => 'logout'
        );
        return $this->_url($options);
    }

    /**
     * @return Zend_View_Helper_Url
     */
    public function getUrlHelper()
    {
        if (null === self::$_urlHelper) {
            self::$_urlHelper = new Zend_View_Helper_Url();
        }
        return self::$_urlHelper;
    }

    protected function _url($options, $routeName = null, $reset = true)
    {
        $urlHelper = $this->getUrlHelper();
        if (empty($options['module'])) {
            $options['module'] = $this->_getModuleName();
        }

        return $urlHelper->url($options, is_null($routeName) ? 'default' : $routeName, $reset);
    }

    protected function _getModuleName()
    {
        $moduleName = substr(get_class($this), 0, strpos(get_class($this), '_'));
        return strtolower($moduleName);
    }
}