title: How can I get the current action in Zend Framework?
body: <p>I have a plugin in my Zend Framework application that checks login status after every request, and reroutes the user to the login action if their session is invalid or expired.  I would like to cache the previous request action so that, after a successful login attempt, I can redirect them back to their previous request.</p>
  
  <p>I have found the documentation on the setActionController() method, but I can't find anything on a "getActionController()" method.  Does one exist?  If so, does anyone have any information they could link me to on it?  If not, what's the best way to achieve my goal?</p>