68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* Copyright (C) 2011-2012 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 2.1
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "libubus.h"
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#include "libubus-internal.h"
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static int ubus_subscriber_cb(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req,
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const char *method, struct blob_attr *msg)
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{
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struct ubus_subscriber *s;
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s = container_of(obj, struct ubus_subscriber, obj);
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s->cb(ctx, obj, req, method, msg);
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return 0;
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}
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const struct ubus_method watch_method __hidden = {
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.name = NULL,
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.handler = ubus_subscriber_cb,
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};
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int ubus_register_subscriber(struct ubus_context *ctx, struct ubus_subscriber *s)
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{
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struct ubus_object *obj = &s->obj;
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obj->methods = &watch_method;
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obj->n_methods = 1;
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return ubus_add_object(ctx, obj);
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}
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static int
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__ubus_subscribe_request(struct ubus_context *ctx, struct ubus_object *obj, uint32_t id, int type)
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{
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struct ubus_request req;
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blob_buf_init(&b, 0);
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blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id);
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blob_put_int32(&b, UBUS_ATTR_TARGET, id);
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if (ubus_start_request(ctx, &req, b.head, type, 0) < 0)
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return UBUS_STATUS_INVALID_ARGUMENT;
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return ubus_complete_request(ctx, &req, 0);
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}
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int ubus_subscribe(struct ubus_context *ctx, struct ubus_subscriber *obj, uint32_t id)
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{
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return __ubus_subscribe_request(ctx, &obj->obj, id, UBUS_MSG_SUBSCRIBE);
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}
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int ubus_unsubscribe(struct ubus_context *ctx, struct ubus_subscriber *obj, uint32_t id)
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{
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return __ubus_subscribe_request(ctx, &obj->obj, id, UBUS_MSG_UNSUBSCRIBE);
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}
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