s3-winbind: Don't fail on users without a uid.

This fixes bug #8608.

If you join samba with idmap_ad backend to an AD. When you try to
enumerate users with 'getent passwd' and the user doesn't have a uid
set, then getent is aborted cause of NT_STATUS_NONE_MAPPED. If we can't
map a user we should not stop but continue enumerating users.

This normally happens with the default user 'krbtgt' with idmap_ad but
could also happen with other backends.

Autobuild-User: Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date: Tue Nov 15 16:52:04 CET 2011 on sn-devel-104

1 files changed, 19 insertions, 1 deletions

diff --git a/source3/winbindd/wb_next_pwent.c b/source3/winbindd/wb_next_pwent.c
index da4754cc9f..a52a566e7b 100644
--- a/source3/winbindd/wb_next_pwent.c
+++ b/source3/winbindd/wb_next_pwent.c
@@ -148,7 +148,25 @@ static void wb_next_pwent_fill_done(struct tevent_req *subreq)
 
 	status = wb_fill_pwent_recv(subreq);
 	TALLOC_FREE(subreq);
-	if (tevent_req_nterror(req, status)) {
+	/*
+	 * When you try to enumerate users with 'getent passwd' and the user
+	 * doesn't have a uid set we should just move on.
+	 */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
+		state->gstate->next_user += 1;
+
+		subreq = wb_fill_pwent_send(state,
+					    state->ev,
+					    &state->gstate->users[state->gstate->next_user],
+					    state->pw);
+		if (tevent_req_nomem(subreq, req)) {
+			tevent_req_post(req, state->ev);
+			return;
+		}
+		tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
+
+		return;
+	} else if (tevent_req_nterror(req, status)) {
 		return;
 	}
 	state->gstate->next_user += 1;