Using:

http://wiki.jboss.org/wiki/Wiki.jsp?page=AccessingServletRequestForAuthentication

I am able to access the HttpServletRequest with the following code:

HttpServletRequest request = (HttpServletRequest)PolicyContext.getContext("javax.servlet.http.HttpServletRequest");

I need to access the response object in order to set a cookie upon completion of login, before releasing the user to the portal. Is there a similar method that is just undocumented for accessing the response object?