Jason or Scott,

 

One of the OpenFire developers suggested I look into SPNEGO or GSSAPI as
a possible means of integration since he says there is integration
already available for OpenFire using these technologies. I have found
several references to an SPNEGO adapter for CAS, but I don't see
anything on GSSAPI. I think SPNEGO is an implementation of GSSAPI or
some part of it, but I am not terribly familiar with either. Can you
tell me what sort of support is available for either of these
authentication methods? Also, am I right in thinking SPNEGO is a
Windows-only implementation? I also have a need to support Mac users and
possibly even a few Linux users so a Windows-only solution probably
won't work for me.

 

Thanks.


Bill Bailey

Senior Developer / DBA

Northland, A Church Distributed

 

________________________________

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Jason Shao
Sent: Thursday, May 24, 2007 4:23 PM
To: Yale CAS mailing list
Subject: Re: CAS + OpenFire

 

Hey Bill,

 

Openfire looks cool -- I'd love to hear how it works out for you.
Thoughts below.

 

On May 23, 2007, at 9:56 AM, Bill Bailey wrote:

        There are a couple of things I still have questions about. 

        First, although OpenFire allows the authentication to be
customized, it appears that it still expects the username to be passed
in as part of the login. I do not see any way to inform OpenFire of the
username AFTER the authentication occurs and if I understand CAS
correctly you do not know the actual username until the ticket is
validated. 

        How hard would it be to customize CAS to return the username to
the browser (e.g. in the form of another cookie) so that the client can
pass in the real username rather than a placeholder or null? Is there
some security reason that is not obvious to me that this should not be
done? 

An alternative approach would be to have your FLEX webapp validate the
proxyticket, get the NetID, and then obtain a proxy ticket. You could
then pass the username and the proxy ticket directly to openfire. This
has the advantage that you could then restrict Openfire to only accept
CAS auth from that webapp (if so desired) -- or all the other magic that
proxy chains let you accomplish.



Second, when I write the custom authentication module, should it be as
simple as just calling the ServiceValidate service and getting either an
error response or a success response (with username)? What is the best
Java client to look at for an example of what I need to do? Keep in mind
that the chat server is not a web server so I don't think (tell me if
I'm wrong) any of the existing Java clients can be use as-is.

I know one of Scott's goals in the JA-SIG CAS Java Client 3.0 rewrite
was improved modularity -- it sounds like this would be a great use-case
for the new code.

 

Scott?

 

Jason

 

--

 

Jason Shao

Application Developer

Office of Instructional & Research Technology

Rutgers University

v. 732-445-8726 | f. 732-445-5539 | [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> 





 

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