Joomla! Discussion Forums

Hi all,
  I've developed in Joomla for some time, but I can't seem to find a solution to an issue I'm working on.  I would like to create a document repository plug in for Joomla that uses webDAV.  This will easily allow desktop integration with clients that are Windows, Linux, and Mac based.  If possible, I would like the authentication and permissions to be executed through the Joomla authentication framework.  This will allow us to re-use whatever the server configuration may be, and extract us from specifics of the server config.  I saw the webDAV module for the Google summer of code, but that looks more oriented towards article content, not binary content.  Can anyone give me some advice/direction on getting some requirements together to get this working?

Thanks,
Todd