Extension for CAS log in via JNLP

[kanzel]

Hello there.
I'm new in CAS, and I have no idea where to start. I have the following problem:
I need to make extension for CAS to log in via JNLP. So, I want, when I try to acces some application on server, to redirect me on some page where I can download JNLP file, but when I'm still not loged in. If enyone cen help me here with this, I would be very grateful.