Grant temporary permission during function call on registration page

Question

I am geocoding an address supplied by an anon user on the registration page through ajax and then displaying the point on a map for them. I don't want to have this geocoding permission open to anon users though and just want to make an exception for it in my ajax function. I remember seeing something like this on my past Drupal travels but can't find it for the life of me now. Can someone point me in the right direction?

Answer 1

What you want is not possible. Drupal does its best to prevent cross site request forgery, but same site request forgery is not even an established term.

Any candidate for a solution can be circumvented by a script that automates downloading and parsing the registration form, creating the appropriate HTTP request for the AJAX call and sending it to the server.