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