lib/config.php:
<?php
    function runRequestFilters( ezcMvcRoutingInformation $routeInfo, ezcMvcRequest $request )
    {
        switch ( $routeInfo->matchedRoute )
        {
            case '/':
                return $this->runAuthCheckLoggedIn( $request );
                break;
            case '/register/submit':
            case '/register':
            case '/login-required':
            case '/login':
            case '/logout':
            case '/fatal':
                break;
            default:
                return $this->runAuthRequiredFilter( $request );
        }
    }   

    private function doAuthCheck( $request )
    {   
        $database = new ezcAuthenticationDatabaseInfo( ezcDbInstance::get(), 'user', array( 'email', 'password' ) );
        $databaseFilter = new ezcAuthenticationDatabaseFilter( $database );
        
        // use the options object when creating a new Session object
        $options = new ezcAuthenticationSessionOptions();
        $options->validity = 86400; 

        $session = new ezcAuthenticationSession( $options );
        $session->start();
            
        $user = $session->load();
        $password = null;
        $loginWithForm = true;
        
        $credentials = new ezcAuthenticationPasswordCredentials( $user, md5( $password ) );
        $authentication = new ezcAuthentication( $credentials );
        $authentication->session = $session; 
        $authentication->addFilter( $databaseFilter );

        return $authentication;
    }   

    private function fetchUserName()
    {   
        if ( isset( $_SESSION['ezcAuth_id'] ) )
        {
            $q = ezcDbInstance::get()->createSelectQuery();
            $q->select( '*' ) 
              ->from( 'user' )
              ->where( $q->expr->eq( 'email', $q->bindValue( $_SESSION['ezcAuth_id'] ) ) );
            $s = $q->prepare();
            $s->execute();
            $r = $s->fetchAll();
            
            return $r[0]['name'];
        }   
        return null;
    }

    private function runAuthCheckLoggedIn( $request )
    {
        $auth = self::doAuthCheck( $request );
        $auth->run();
        $request->variables['user'] = self::fetchUserName();
    }
    
    private function runAuthRequiredFilter( $request )
    {
        $auth = self::doAuthCheck( $request );
        if ( !$auth->run() )
        {
            $status = $auth->getStatus();
            $request->variables['redirUrl'] = $request->uri;
            $request->variables['reasons']  = $status;

            $request->uri = '/login-required';
            return new ezcMvcInternalRedirect( $request );
        }

        $request->variables['user'] = self::fetchUserName();
    }

    function runResultFilters( ezcMvcRoutingInformation $routeInfo, ezcMvcRequest $request, ezcMvcResult $result )
    {
        $result->variables['user'] = isset( $request->variables['user'] ) ? $request->variables['user'] : 'Anonymous';
    }