LDAP authentication for openHAB 1.8?

Is there a way to get openHAB to authenticate against a LDAP server? It would be easy enough for me to add the LDAP authentication to the nginx reverse proxy that I have in front of openHAB but I’d prefer to have openHAB do the LDAP authentication itself.

There isn’t a way that I’ve seen. I think it only supports the user.cfg file.