class.ilAuthOpenId.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilAuthOpenId extends Auth
{
        private $settings = null;
        
        public function __construct($a_container,$a_addition_options = array())
        {
                parent::__construct(
                        $a_container,
                        $a_addition_options,
                        array($this,'callProvider'),
                        true);
                $this->setSessionName("_authhttp".md5(CLIENT_ID));
                
                $this->initAuth();
                $this->initSettings();
                
                if(isset($_GET['oid_check_status']))
                {
                        $_POST['username'] = 'dummy';
                        $_POST['password'] = 'dummy';
                }
                
        }

        public function supportsRedirects()
        {
                return true;
        }
        
        public function callProvider($username,$status,$auth)
        {
                global $ilCtrl;
                
                $username = $_POST['oid_username'];
                
                if(!$this->parseUsername($username,$auth))
                {
                        return false;
                }
                
                $consumer = $this->settings->getConsumer();
                $oid_auth = $consumer->begin($username);
                
                if (!$oid_auth) 
                {
                $auth->status = AUTH_WRONG_LOGIN;
                        return false;
                }

                include_once 'Auth/OpenID/SReg.php';
            $sreg_req = Auth_OpenID_SRegRequest::build(
                        // Required
                        array('nickname'),
                        // Optional
                        array(
                                'fullname',
                                'dob',
                                'email',
                                'gender',
                                'postcode',
                                'language',
                                'timezone'
                        )
                );

                if ($sreg_req)
                {
                        $oid_auth->addExtension($sreg_req);
                }

                // TODO: Switch openid v. 1,2
                $url = $oid_auth->redirectURL(ILIAS_HTTP_PATH,$this->settings->getReturnLocation());
                ilUtil::redirect($url);
        }
        
        protected function initSettings()
        {
                include_once './Services/OpenId/classes/class.ilOpenIdSettings.php';
                $this->settings = ilOpenIdSettings::getInstance();
                $this->settings->initConsumer();
        }
        
        protected function parseUsername(&$username,$auth)
        {
                if($_POST['oid_provider'])
                {
                        include_once './Services/OpenId/classes/class.ilOpenIdProviders.php';
                        try 
                        {
                                $url = ilOpenIdProviders::getInstance()->getProviderById($_POST['oid_provider'])->getURL();
                                $username = sprintf($url,(string) $username);
                                $GLOBALS['ilLog']->write(__METHOD__.': Using '.$username.' for authentication');
                                return true;
                        }
                        catch(UnexpectedValueException $e)
                        {
                                $GLOBALS['ilLog']->write(__METHOD__.': Unknown provider id given: '.$username);
                                $auth->status = AUTH_WRONG_LOGIN;
                                return false;
                        }
                }
                if($this->settings->forcedProviderSelection())
                {
                        $auth->status = AUTH_WRONG_LOGIN;
                        return false;
                }
                $GLOBALS['ilLog']->write(__METHOD__.': Trying openid url: '.$username);
                return true;
        }
}
?>