29 Sep
2010
29 Sep
'10
6:46 p.m.
2010/9/30 Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
Yes, but this mechanism is a bit "weak". Imagine I'm allowed by Bob
and retrieve his icon. Later Bob's blocks me. Now if my client tries
to retrieve his icon again I would receive a 403 or 404 (customizable
using the script). Any code tells me that I've been blocked.
For sure all of us know web pages like "Discover if your friend has
blocked you in MSN !!!". Well, here is a way to do the same in this
"cool" SIP/SIMPLE specification.
And there is no solution. When I block a user he must believe that
I've been disconnected, but since icon is retrieved via HTTP from a
permanent storage then there is way to realize that I've blocked such
user. The only solution is carrying the icon in the NOTIFY itself as
XMPP does (by default).
Regards.
--
Iñaki Baz Castillo
<ibc(a)aliax.net>
This means
that the XCAP server MUST behave as a SIP presence server
in order to allow or deny the icon of user B to user A. Painful? Yes.
Well, then this xcap server can do more than I expected so far, because it
can behave like a presence server :-) since kamailio is a presence server.
You can check the authorization status for watchers in config, iirc, Juha
added it:
http://kamailio.org/docs/modules/devel/modules_k/presence.html#id2941538
So, when there is a query for someone's resources, you can check in the
config if querying person is allowed to see presence of queried person.