Long ago I built a php based application for room reservations which basically ran on its own – outside the website's CMS. It was part of what I would now call a custom made intranet – or "custom-app".
Now the main website finally runs on drupal – but now we have the drupal login and the custom-app login. How could I now 'teach' the custom-app to accept visitors that are already logged in to the dp based CMS?
I know, the 'easiest' or actually 'most correct' way of doing this would probably be to develop the custom-app into a module. But are there other ways e.g. to pass the login information over to the custom-app? Any pointers would help. Thank you!
update1: both are running on the same server under the same domain.
update2: I finally came across this question "How to call drupal_bootstrap from custom file in subfolder?" – I guess going bootstrap would be the right direction for now…