Shibboleth support in my application

[Peter Schober]

* mmichaelchn <mmichaelchn at gmail.com> [2013-09-03 09:29]:
> I would like to know what of following I need to install in my
> webapp: IDP?  SP? APACHE server?

You're the SP (Service Provider), so you'll need to install and
configure the Shibbolth SP and one of the supported webservers
(e.g. Apache httpd). If your application runs in a Java servlet
container additional integration steps are necessary (and documented
in the official documentation).
If your platform is such that you can't install the SP and one of the
supported webservers you'd need to look at other SAML implementations.

> And what should i request my client to provide me - only their
> current shibboleth configuration?

SAML Metadata describing their IdP.
Likewise, you'll need to provide them with SAML Metadata describing
your SP.
 
> What will I need to change in my code to authenticate using
> shibboleth? I currently have a form with user id and password.

You'll need to provide an alternative way to log in that does not
involve filling out that form. The rest depends.

> Any pointers on how I start and what all I install will be really
> helpful.

The documentation has a lot of introductory material but I don't know
what you've read so far. If in doubt, start there.
-peter