Change password funtionality

[Nicolas Clemeur]

Hello all,

I am trying to implement a page so that the user can change its password within
the CAS application.

 The problem I am facing is that I can't see how I can retrieve the user name
 for an already authenticated user. I did try to customise the LoginViaForm 
 action so that I store the user in session, but this does not help since the
 session times out well before the authentication of that user times out.

 Is there a way to access which user is accessing the change password page?

I am using CAS 3.1.1 with mod_auth_cas and apache in front of tomcat.

Cheers

Nicolas