This module extracts profile details from the user’s vcard4 and provides
them in the UserInfo
endpoint of mod_http_oauth2 to
clients the user grants authorization.
Whether this is really needed is unclear at this point. When logging
in with an XMPP client, it could fetch the actual vcard4 to retrieve
these details, so the UserInfo details would probably primarily be
useful to other OAuth 2 and OIDC clients.