watch add/remove -> subscribe/unsubscribe:

[project/ubus.git] / ubusd_obj.c

diff --git a/ubusd_obj.c b/ubusd_obj.c
index 2248a08..8b1b18f 100644 (file)
--- a/ubusd_obj.c
+++ b/ubusd_obj.c
@@ -112,6 +112,8 @@ struct ubus_object *ubusd_create_object_internal(struct ubus_object_type *type,
        obj->type = type;
        INIT_LIST_HEAD(&obj->list);
        INIT_LIST_HEAD(&obj->events);
+       INIT_LIST_HEAD(&obj->subscribers);
+       INIT_LIST_HEAD(&obj->target_list);
        if (type)
                type->refcount++;
 
@@ -162,8 +164,39 @@ free:
        return NULL;
 }
 
+void ubus_subscribe(struct ubus_object *obj, struct ubus_object *target, const char *method)
+{
+       struct ubus_subscription *s;
+
+       s = calloc(1, sizeof(*s) + strlen(method) + 1);
+       if (!s)
+               return;
+
+       s->subscriber = obj;
+       s->target = target;
+       list_add(&s->list, &target->subscribers);
+       list_add(&s->target_list, &obj->target_list);
+       strcpy(s->method, method);
+}
+
+void ubus_unsubscribe(struct ubus_subscription *s)
+{
+       list_del(&s->list);
+       list_del(&s->target_list);
+       free(s);
+}
+
 void ubusd_free_object(struct ubus_object *obj)
 {
+       struct ubus_subscription *s, *tmp;
+
+       list_for_each_entry_safe(s, tmp, &obj->target_list, target_list) {
+               ubus_unsubscribe(s);
+       }
+       list_for_each_entry_safe(s, tmp, &obj->subscribers, list) {
+               ubus_notify_unsubscribe(s);
+       }
+
        ubusd_event_cleanup_object(obj);
        if (obj->path.key) {
                ubusd_send_obj_event(obj, false);