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logind: fix check for multiple sessions

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The "$action-multiple-sessions" polkit actions are defined as
"$action while other users are logged in". To me this implies that the
following sessions should not count:
 - greeter sessions
 - user sessions belonging to the same user as the one who's asking

Not sure how to treat class SESSION_LOCK_SCREEN. I never have these.
I just ignore every class that's not SESSION_USER.

https://bugzilla.redhat.com/show_bug.cgi?id=814424
This commit is contained in:
Michal Schmidt 2012-06-12 09:31:43 +02:00
parent 4f5d327a49
commit 2154761fbb
1 changed files with 10 additions and 17 deletions
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27
src/login/logind-dbus.c
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@ -930,27 +930,20 @@ static int have_multiple_sessions(
DBusMessage *message,
DBusError *error) {
Session *s;
Session *session;
Iterator i;
unsigned long ul;
assert(m);
if (hashmap_size(m->sessions) > 1)
return true;
ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error);
if (ul == (unsigned long) -1)
return -EIO;
/* Hmm, there's only one session, but let's make sure it
* actually belongs to the user who is asking. If not, better
* be safe than sorry. */
s = hashmap_first(m->sessions);
if (s) {
unsigned long ul;
ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error);
if (ul == (unsigned long) -1)
return -EIO;
return s->user->uid != ul;
}
/* Check for other users' sessions. Greeter sessions do not count. */
HASHMAP_FOREACH(session, m->sessions, i)
if (session->class == SESSION_USER && session->user->uid != ul)
return true;
return false;
}