PROPFIND
From Davical
List available resources using propfind
==Only this user
curl --request PROPFIND --user "USER:PASS" https://SERVER/caldav.php
==Show all user has access to
curl --request PROPFIND --header "Depth: 2" --data-ascii "<D:propfind xmlns:D=\"DAV:\"><D:getetag/></D:propfind>" --user "USER:PASS" https://SERVER/caldav.php