Action.php

<?php

/**
 * A custom base controller class that takes care of setting up custom View Helpers.
 */

class App_Controller_Action extends Unl_Controller_Action
{
    public function init()
    {	
        parent::init();
        $this->view->addHelperPath(dirname(__FILE__) . '/../View/Helper', 'App_View_Helper');
        $this->view->doctype()->setDoctype(Zend_View_Helper_Doctype::XHTML1_TRANSITIONAL);
        // Zend_Controller_Action_HelperBroker::addPrefix('App_Controller_Helper');
        
        $this->_transparentCasLogin();
    }
    
    protected function _transparentCasLogin()
    {
        $session = new Zend_Session_Namespace(__CLASS__);
        
        if (!array_key_exists('unl_sso', $_COOKIE)) {
	        // Only passively check for a login once per hour (per user)
	        if ($session->lastCasCheck > time() - 60*60) {
	            return;
	        }
            $session->lastCasCheck = time();
        } else {
        	$session->lastCasCheck = 0;
        }
        
    	// The auth module is doing its thing (probably an active login or logout). Let it be.
    	if (get_class($this) == 'Auth_IndexController') {
    		return;
    	}
    	
    	Auth_UserModel::authenticateUser();
    }
}