Get CalDAV entries

I need a Perl script, which retrieves from a DAViCAL calender ([login to view URL]) the next chronological calender entries from a defined date on. There are 2 necessary parameters: * the number of calender entries to retrieve * the date, from which on the entries have to be retrieved The calender consists of single events and recurring envents. This recurring events may have exeptions, such as one calendar entry of this recurring row is deleted or moved or something else. The calender can be called by https-URL. The retrieved calendar entries have be sent to STDOUT. The resultig code has to be a tar file, with all modules needed by the script.