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
);
25 s
->cb(ctx
, obj
, req
, method
, msg
);
29 const struct ubus_method watch_method __hidden
= {
31 .handler
= ubus_subscriber_cb
,
34 int ubus_register_subscriber(struct ubus_context
*ctx
, struct ubus_subscriber
*s
)
36 struct ubus_object
*obj
= &s
->obj
;
38 obj
->methods
= &watch_method
;
41 return ubus_add_object(ctx
, obj
);
45 __ubus_subscribe_request(struct ubus_context
*ctx
, struct ubus_object
*obj
, uint32_t id
, int type
)
47 struct ubus_request req
;
50 blob_put_int32(&b
, UBUS_ATTR_OBJID
, obj
->id
);
51 blob_put_int32(&b
, UBUS_ATTR_TARGET
, id
);
53 if (ubus_start_request(ctx
, &req
, b
.head
, type
, 0) < 0)
54 return UBUS_STATUS_INVALID_ARGUMENT
;
56 return ubus_complete_request(ctx
, &req
, 0);
60 int ubus_subscribe(struct ubus_context
*ctx
, struct ubus_subscriber
*obj
, uint32_t id
)
62 return __ubus_subscribe_request(ctx
, &obj
->obj
, id
, UBUS_MSG_SUBSCRIBE
);
65 int ubus_unsubscribe(struct ubus_context
*ctx
, struct ubus_subscriber
*obj
, uint32_t id
)
67 return __ubus_subscribe_request(ctx
, &obj
->obj
, id
, UBUS_MSG_UNSUBSCRIBE
);