Authentification using an external tool

Hello,

I want to use Slide with my existing authentication
mecanism. This mecanism verify login/password against my own repository and
store login info into the HttpRequest.
Via a filter and the JAAS API I succeed to retrieve a Principal instance
but how can I send it to the rest of the slide servlet ?
I saw that most of the work is done in :
org.apache.slide.webdav.util.WebdavUtils->getSlideToken ()

But this methods retrieve the principal from the request (
req.getUserPrincipal()) and if the principal is not set the CredentialsToken
is built without Principal and authentification fails.

Thanks for your help.

     Ektor.