1/* $NetBSD: notifications.c,v 1.2 2010/12/09 00:10:59 christos Exp $ */
2
3/*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Mihai Chelaru <kefren@NetBSD.org>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <arpa/inet.h>
33
34#include <stdlib.h>
35
36#include "ldp.h"
37#include "socketops.h"
38#include "tlv.h"
39#include "ldp_errors.h"
40#include "notifications.h"
41
42/* builds a notification TLV. Do not forget to free the result */
43struct notification_tlv *
44build_notification(uint32_t msg, uint32_t n)
45{
46	struct notification_tlv *t;
47	t = malloc(sizeof(*t));
48
49	if (!t) {
50		fatalp("build_notification: malloc problem\n");
51		return NULL;
52	}
53
54	t->type = htons(LDP_NOTIFICATION);
55	t->length = htons(sizeof(struct notification_tlv) - TLV_TYPE_LENGTH);
56	t->status = htons(TLV_STATUS);
57	t->st_len = sizeof(struct notification_tlv) - 2 * TLV_TYPE_LENGTH;
58	t->st_code = htonl(n);
59	t->msg_id = htonl(msg);
60	t->msg_type = 0;
61	return t;
62
63}
64
65int
66send_notification(const struct ldp_peer * p, uint32_t msg, uint32_t code)
67{
68	struct notification_tlv *nt;
69	int             rv;
70
71	if (p->state != LDP_PEER_CONNECTED && p->state != LDP_PEER_ESTABLISHED)
72		return -1;
73
74	nt = build_notification(msg, code);
75
76	rv = send_tlv(p, (struct tlv *) nt);
77	free(nt);
78	return rv;
79}
80