1 /* $NetBSD: notifications.c,v 1.3 2013/07/11 05:45:23 kefren 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 */
43 struct notification_tlv *
build_notification(uint32_t msg,uint32_t n)44 build_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
65 int
send_notification(const struct ldp_peer * p,uint32_t msg,uint32_t code)66 send_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