I have AD authentication working on my XOOPS site without issue. I have a previously built site that employees log into and retrieve benefit time, payroll data, etc. With this site, I have a login screen which they log in and get to their information. I have added a link off the XOOPS site to display this login page.

What I would like to do is, if the user logs into the XOOPS site, it authenticates against our AD, then if they click the link to go to their benefits, it automatically authenticates who they are from the XOOPS login which is already authenticated.

Obviously the XOOPS functionality is already there to authenticate, how can I use that to pass the user_id/password to my page/application?

Thanks for any suggestions.