So terminating session did not work, but we found the problem and solution. It 
seems phpCAS sets a cookie with the ticket when you login. The vendor created 
the page 'login.php', and the cookie was "session_for:login.php". Then on 
logout another cookie was set with the name "session_for:logout.php". Removing 
the "session_for:login.php" cookie disabled the auto login to the login.php and 
prompted for CAS credentials.


-Ben

From: Mike Seiler <michaelsei...@fuller.edu<mailto:michaelsei...@fuller.edu>>
Reply-To: "cas-user@lists.jasig.org<mailto:cas-user@lists.jasig.org>" 
<cas-user@lists.jasig.org<mailto:cas-user@lists.jasig.org>>
Date: Thursday, February 19, 2015 at 11:05 AM
To: "cas-user@lists.jasig.org<mailto:cas-user@lists.jasig.org>" 
<cas-user@lists.jasig.org<mailto:cas-user@lists.jasig.org>>
Subject: Re: [cas-user] Logout using phpCAS

Ben,

I have several PHP applications.  The only way that I've found to completely 
kill the local application session is to explicitly set the local PHP session 
to null and destroy it, then call the phpCAS::logout() method.  This ensures 
that any additional attempts to log in to the local application require 
authentication through CAS.

session_destroy() only kills a current session if one has started, so that 
means that you have the odd requirement of calling session_start() just to call 
session_destroy()

session_start();
session_destroy();
// If you really want to make sure it all dies
$_SESSION= null;
phpCAS::logout();

Mike

On Thu, Feb 19, 2015 at 7:56 AM, Waldbieser, Carl 
<waldb...@lafayette.edu<mailto:waldb...@lafayette.edu>> wrote:
Ben,

I am not sure, as I don't have the code in front of me at the moment, but 
calling phpCAS::logout() essentially should stop the current execution and 
redirect you to the logout URL on your CAS server.  If you need to work around 
a bug, you could probably kill the local session and do the redirect directly 
in PHP.

Thanks,
Carl


----- Original Message -----
From: "Benjamin Cherian" 
<benjamin.cher...@villanova.edu<mailto:benjamin.cher...@villanova.edu>>
To: cas-user@lists.jasig.org<mailto:cas-user@lists.jasig.org>
Sent: Thursday, February 19, 2015 10:12:45 AM
Subject: Re: [cas-user] Logout using phpCAS

That's what I thought, but the documentation
(https://wiki.jasig.org/display/CASC/phpCAS+logout), says that the
logout() method will kill the current PHP session. So that assumes they
application does not need to call session_destroy(). But if they do call
session_destroy() before the phpCAS::logout(), will that cause any issues
with the logout? I'd test it out myself, but I don't have access to the
application, nor any current PHP applications to test with at the moment.





On 2/19/15, 9:57 AM, "Waldbieser, Carl" 
<waldb...@lafayette.edu<mailto:waldb...@lafayette.edu>> wrote:

>Ben,
>
>Likely, you also have some kind of PHP session for the application.
>
>=> Generally speaking, logging out of CAS SSO does *NOT* log you out of
>any application sessions. <=
>
>So you might want to clear any normal PHP session prior to calling
>`phpCAS::logout()`.
>
>Thanks,
>Carl Waldbieser
>ITS System Programmer
>Lafayette College
>
>----- Original Message -----
>From: "Benjamin Cherian" 
><benjamin.cher...@villanova.edu<mailto:benjamin.cher...@villanova.edu>>
>To: cas-user@lists.jasig.org<mailto:cas-user@lists.jasig.org>
>Sent: Thursday, February 19, 2015 9:28:51 AM
>Subject: [cas-user] Logout using phpCAS
>
>We have a vendor using phpCAS to implement SSO with our CAS server. They
>created a custom login page to handle CAS. Login works fine, but logout
>is currently an issue. Currently when we logout, phpCAS::logout() is
>called and we are redirected to the CAS logout page. When I try to go to
>any URL within the application, I'm not logged in. When I go to another
>CAS enabled application, I am not logged in.
>
>But when I go back to the custom CAS login page, I am logged back in
>without being prompted for login credentials. No interaction occurs
>between the application and the CAS servers, so it is all within the
>client and the application at this point of re-entry.
>
>Is this acceptable behavior for CAS, or is there something more that
>needs to be done to be fully logged out of the application?
>
>Thanks,
>Ben
>
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