Hi Ajit,

You could try what I suggested earlier in the thread.  Let us know if
the workaround works for you.

-alex

On Jul 9, 6:01 am, Ajit <[EMAIL PROTECTED]> wrote:
> Hi,
> We are also facing this SSO issue, please let me know if there is any
> possible solution.
> Thanks,
> Ajit
>
> On Jul 8, 7:10 pm, thai <[EMAIL PROTECTED]> wrote:
>
> > Hi Alex,
>
> > Thanks for your prompt response and suggestions.
> > I will try to generate SAMLReponse without the SAMLRequest and see how
> > it goes.
>
> > I am wondering how others avoid (or solve) this problem.
>
> > I tried to argue with the management this is the user's fault that
> > they did not log out or at least quit the browsers. :-)
>
> > Thai
>
> > On Jul 7, 6:30 pm, "Alex (Google)" <[EMAIL PROTECTED]> wrote:
>
> > > Hi Thai,
>
> > > If the "Email" link is tohttp://mail.google.com/a/yourdomain.com,
> > > then this is the expected behavior.  When the second user clicks on
> > > the "Email" link the Google Apps session is still active, so
> > > mail.google.com will not re-direct to your sign-in URL.
>
> > > You could work around this by changing the "Email" link to go directly
> > > to a page (not google.com) which generates a SAMLResponse based on the
> > > current Portal user.  This isn't the way it's intended to work, since
> > > you would have to generate the SAMLResponse without a SAMLRequest and
> > > RelayState, but it is one way of avoiding the behavior you describe.
>
> > > Even if you modify the "Email" link, if the second were to type in the
> > > URLhttp://mail.google.com/a/yourdomain.com, he would see the first
> > > user's session.  Unless the first user clicks "Sign out" in Gmail or
> > > closes the browser, there is no way for Google Apps to distinguish the
> > > second user from the first.
>
> > > -alex
>
> > > On Jul 7, 5:59 pm, thai <[EMAIL PROTECTED]> wrote:
>
> > > > Hi Alex,
>
> > > > Please help me out on this problem!
>
> > > > Here is the flow of our system:
>
> > > > 1. User log-in to our Portal.
> > > > 2. Click on an "Email" link, this link points to our SSO servlet.
> > > >    This servlet can determine if a user already logged in to our
> > > > Portal or not.
> > > > 3. If user already logged in to our Portal, the servlet will make a
> > > > SAMLRequest.
> > > >     If user haven't logged in (mean user types the URL to access SSO
> > > > servlet from the browser) servlet redirects to our Portal's log-in
> > > > page
> > > > 4. Google Apps sends a SAMRequest to our SSO servlet and the servlet
> > > > will sign and post to ACS, then logged into Google Apps.
>
> > > > It had been working fine if users click on the "Sign out" link from
> > > > Google Apps.
>
> > > > If a user did not click "Sign out" but just close the Google Apps
> > > > window (or tab) and the browser is not quit.
>
> > > > The next user log-in to our Portal and click on the "Email" link: At
> > > > step #3 when the servlet make a SAMLRequest, Google Apps did not send
> > > > back the SAMLrequest but instead log-in to the previous user's session
> > > > and therefore a previous user's mailbox.
>
> > > > Could it be a flaw in the design?
>
> > > > As you pointed out if I can make a second post to ACS, Google Apps
> > > > will kill the previous session but I can't not make the second
> > > > SAMLRequest and therefore could not make the second post to ACS.
>
> > > > Please help!
>
> > > > Thanks,
>
> > > > Thai
>
> > > > On Jul 2, 4:58 pm, "Alex (Google)" <[EMAIL PROTECTED]> wrote:
>
> > > > > Hi Thai,
>
> > > > > Thanks for the detailed scenarios.  When you post another response to
> > > > > the ACS URL, it's suppose to invalidate any existing sessions and
> > > > > create a new session.  From what you described it sounds like that's
> > > > > not happening (without the IFRAME logout).  I haven't been able to
> > > > > reproduce this behavior.
>
> > > > > Is there any chance the login form or the ACS form was cached by the
> > > > > browser?
>
> > > > > Btw, we've had reports from other admins that using an IFRAME doesn't
> > > > > set (or clear) cookies in Internet Explorer due to lack of P3P
> > > > > support.  Here's an earlier thread on this topic:
>
> > > > >http://groups.google.com/group/google-apps-apis/browse_thread/thread/...
>
> > > > > -alex
>
> > > > > On Jul 2, 12:53 pm, thai <[EMAIL PROTECTED]> wrote:
>
> > > > > > Hi there,
>
> > > > > > If I read it correctly, the problem is not about the PHP code but 
> > > > > > it's
> > > > > > about usability.
>
> > > > > > > 1. User logins to [EMAIL PROTECTED] and goes to its mailbox
> > > > > > > 2. User doesn't press signout button and returns back to login 
> > > > > > > page
> > > > > > > 3. User logins to [EMAIL PROTECTED] and goes to its mailbox
> > > > > > > 4. User again doesn't press signout button and returns back to 
> > > > > > > login
> > > > > > > page
> > > > > > > 5. (!!!) And now user try to login tosomebodyelse'smailbox
> > > > > > > [EMAIL PROTECTED] with any password and he logins successfuly to 
> > > > > > > the
> > > > > > > mailbox he doesn't own!
>
> > > > > > The #2 stated that the user did not press the signout button. This 
> > > > > > is
> > > > > > where the problem occurred.
> > > > > > It's the cookies that still active.
>
> > > > > > I ran into the same problem but I have only one domain.
> > > > > > 1. user logged in as [EMAIL PROTECTED] and went to mailbox.
> > > > > > 2. user DIDN'T press the signout button and go back to the login 
> > > > > > page.
> > > > > > 3. user logged in as [EMAIL PROTECTED] using the same browser (and 
> > > > > > the
> > > > > > browser has NOT been close and re-open) and get a's mailbox.
>
> > > > > > Same scenario as above but at step #2, user quit (exit, close) the
> > > > > > browser and re-open the browser in step #3: user will get b's 
> > > > > > mailbox.
>
> > > > > > it's the cookies!!!
>
> > > > > > I resolve the problem (not very elegant but it works) by put in 
> > > > > > logout
> > > > > > URL in the login page.
> > > > > > <iframe src="https://mail.google.com/a/your.domain.here/?
> > > > > > logout&hl=en"></iframe>
>
> > > > > > Hope this help!
>
> > > > > > Thai Nguyen- Hide quoted text -
>
> > - Show quoted text -
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