[RCD] caldav backend to calender plugin

Hi all,

Sometime last year there was a thread about adding a caldav backend to the calendar plugin provided by kolab. Does anybody now whether there have been any progress with this?

If there have been some progress does anybody know where to find the code for this backend?

If no progress have been made or if nobody is working on this I will start implementing this backend ASAP.

To be recognized by the calendar plugin I must do the following?

1. Under drivers add a folder say caldav
2. In that folder create a file named caldav_driver.php
3. Create a class named caldav_driver extending calendar_driver
4. Implement all abstract methods in calendar_driver

Anything else I need to do?