2 * Copyright (C) 2011-2012 Felix Fietkau <nbd@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License version 2.1
6 * as published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #include "libubus-internal.h"
17 static int ubus_subscriber_cb(struct ubus_context *ctx, struct ubus_object *obj,
18 struct ubus_request_data *req,
19 const char *method, struct blob_attr *msg)
21 struct ubus_subscriber *s;
23 s = container_of(obj, struct ubus_subscriber, obj);
24 s->cb(ctx, obj, req, method, msg);
28 const struct ubus_method watch_method __hidden = {
30 .handler = ubus_subscriber_cb,
33 int ubus_register_subscriber(struct ubus_context *ctx, struct ubus_subscriber *s)
35 struct ubus_object *obj = &s->obj;
37 obj->methods = &watch_method;
40 return ubus_add_object(ctx, obj);
44 __ubus_subscribe_request(struct ubus_context *ctx, struct ubus_object *obj, uint32_t id, int type)
46 struct ubus_request req;
49 blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id);
50 blob_put_int32(&b, UBUS_ATTR_TARGET, id);
52 if (ubus_start_request(ctx, &req, b.head, type, 0) < 0)
53 return UBUS_STATUS_INVALID_ARGUMENT;
55 return ubus_complete_request(ctx, &req, 0);
59 int ubus_subscribe(struct ubus_context *ctx, struct ubus_subscriber *obj, uint32_t id)
61 return __ubus_subscribe_request(ctx, &obj->obj, id, UBUS_MSG_SUBSCRIBE);
64 int ubus_unsubscribe(struct ubus_context *ctx, struct ubus_subscriber *obj, uint32_t id)
66 return __ubus_subscribe_request(ctx, &obj->obj, id, UBUS_MSG_UNSUBSCRIBE);