Your problem has just recently been discussed on this list. Ben Jessel
proposed a workaround which I attached below. Hopefully, this might work for
you.

Stefan


> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
> Sent: Friday, June 27, 2003 1:42 PM
> To: [EMAIL PROTECTED]
> Subject: Possible workaround for invalid direct reference to 
> login page
> 
> 
> Java Authentication with tomcat relies on realms. If you 
> access a page 
> protected by that realm you get directed to the login page.
> However, it is possible to go directly to the login page ( 
> this can happen 
> when users bookmark the login page inadvertantly ).
> 
> This happens in two scenarios:
> 
> 1) The user is already logged in.
> 2) The user is not logged in.
> 
> If you authenticate yourself once you have gone directly to the login 
> page, you get a "invalid direct reference" error. Fair 
> enough, the login 
> page is trying to redirect to itself. Now, I tried to 
> workaround this by 
> checking if the session is null, and if it is, redirecting to some 
> protected page, eg. protected/index.jsp. No luck. It seems 
> that a session 
> is implicitly created, and a new session id gets created.
> 
> So I've tried a cookie strategy:
> 
> <%
> if ( request.getCookies()==null ) {
> response.sendRedirect("/xxxx/jsp/protected/index.jsp");
> }
> if ( request.getRemoteUser()!=null )
> {
> response.sendRedirect("/xxxxx/jsp/protected/index.jsp");
> }
> %>
> 
> i.e, we wont have a cookie if we've gone directly to the 
> login page. But 
> we will have if we've tried to access a protected page and 
> then we've been 
> forwarded to a login page, tomcat will give us a cookie.
> 
> Now if we're already logged in ( which we check with 
> getRemoteUser() , 
> then we just forward to user to an index page. 
> 
> This seems o.k. However my index page actually includes my 
> login page! I'm 
> planning to get around this with some logic that only 
> includes the login 
> page excerpt if we are not logged in......
> 
> Ben
> 
>

> -----Original Message-----
> From: Brian Kuhn [mailto:[EMAIL PROTECTED] 
> Sent: Sunday, June 29, 2003 1:16 AM
> To: [EMAIL PROTECTED]
> Subject: invalid direct reference to form login page...
> 
> 
> Hi all,
> 
> I've set up Tomcat (4.1.24) to do form based authentication.  
> Everything 
> works great, except I've had to deal with a lot of users that 
> type in the 
> url I've given them, get redirected to the login page, and 
> bookmark the 
> login page before logging in.  Later, when they use the 
> bookmark, they get 
> sent to the login page, but get a "Invalid direct reference 
> to form login 
> page..." message once they log in.
> 
> I understand why this happens, but don't know what to do 
> about it.  Is there 
> a way to specify a default page to go to when the login page 
> is requested 
> directly?
> 
> Thanks,
>       Brian Kuhn
>       Telscape Communications
> 
> 
> 
> 
> ====================
> Brian Kuhn
> [EMAIL PROTECTED]
> ====================
> 
> _________________________________________________________________
> The new MSN 8: smart spam protection and 2 months FREE*  
> http://join.msn.com/?page=features/junkmail
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
> 
> 



---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]

Reply via email to