source: libpacketdump/ospf2_1002.c @ d0f25d4

/*
 *
 * Copyright (c) 2007-2016 The University of Waikato, Hamilton, New Zealand.
 * All rights reserved.
 *
 * This file is part of libtrace.
 *
 * This code has been developed by the University of Waikato WAND
 * research group. For further information please see http://www.wand.net.nz/
 *
 * libtrace is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * libtrace is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <arpa/inet.h>
#include "libpacketdump.h"

DLLEXPORT void decode(int link_type UNUSED,const char *packet,unsigned len) {
        libtrace_ospf_network_lsa_v2_t *net;
        struct in_addr *router = NULL;

        net = (libtrace_ospf_network_lsa_v2_t *)packet;

        if (len < 4)
                return;
        printf(" OSPF Network LSA: Netmask %s\n", inet_ntoa(net->netmask));

        router = (struct in_addr *)(packet + sizeof(libtrace_ospf_network_lsa_v2_t));
        len -= sizeof(libtrace_ospf_network_lsa_v2_t);

        while (len >= sizeof(struct in_addr)) {

                printf("OSPF Network LSA: Attached Router %s\n", 
                                inet_ntoa(*router));
                router ++;
                len -= sizeof(struct in_addr);
        }
}