Passing User logon on name into SP

[Peter Schober]

* Prasanna <PVBalachandar at imperosoftware.com> [2013-01-18 15:47]:
> Sorry to say that I could not understand the contents in the link which you
> attached. Can you elaborate where should I make changes on the SP to get the
> user logged in the IdP?

There is no shortcut to the existing documentation, which covers all
of that in great detail.
You'll need to learn about resolving and sending attributes from the
IdP (if you also control the IdP; otherwise you'll need to contact the
IdP admin and ask in what data structure the username you want is
being sent) and then learn how to map attributes from the SAML to
SP-internal variables (which is how they will be made available to
applications).

You can always ask specific questions if you don't understand
something. "Tell me what to do to get arbitrary data from some IdP to
some SP" is not nearly specific enough.
-peter