res_pjsip_outbound_registration: Clean up state when registration is deleted

Nothing was cleaning up the registration state object when ast_sorcery_delete
was called on a registration.  So, the registration was deleted from sorcery
but the state object went right on refreshing the registration (or failing
to refresh the registration) with the peer.

* Added a 'deleted' observer on registration that removes the state object.

ASTERISK-25964 #close
Reported-by Matt Jordan

Change-Id: I2db792145cdb1f72ebbf57dd9099596dbbf12c23

diff --git a/res/res_pjsip_outbound_registration.c b/res/res_pjsip_outbound_registration.c
index 1ae3522d887a78780cdcb998eee190a49bedd2de..6f17b207296dd3b08479ca7d205ea7f4b2b9b107 100644 (file)
--- a/res/res_pjsip_outbound_registration.c
+++ b/res/res_pjsip_outbound_registration.c
@@ -1912,6 +1912,26 @@ static const struct ast_sorcery_instance_observer observer_callbacks_registratio
        .object_type_loaded = registration_loaded_observer,
 };
 
+static void registration_deleted_observer(const void *obj)
+{
+       const struct sip_outbound_registration *registration = obj;
+       struct ao2_container *states;
+
+       states = ao2_global_obj_ref(current_states);
+       if (!states) {
+               /* Global container has gone.  Likely shutting down. */
+               return;
+       }
+
+       ao2_find(states, ast_sorcery_object_get_id(registration), OBJ_UNLINK | OBJ_NODATA | OBJ_SEARCH_KEY);
+
+       ao2_ref(states, -1);
+}
+
+static const struct ast_sorcery_observer registration_observer = {
+       .deleted = registration_deleted_observer,
+};
+
 static int unload_module(void)
 {
        int remaining;
@@ -2011,7 +2031,9 @@ static int load_module(void)
        if (ast_sorcery_instance_observer_add(ast_sip_get_sorcery(),
                &observer_callbacks_registrations)
                || ast_sorcery_observer_add(ast_sip_get_sorcery(), "auth",
-                       &observer_callbacks_auth)) {
+                       &observer_callbacks_auth)
+               || ast_sorcery_observer_add(ast_sip_get_sorcery(), "registration",
+                       &registration_observer)) {
                ast_log(LOG_ERROR, "Unable to register observers.\n");
                unload_module();
                return AST_MODULE_LOAD_FAILURE;