source: libpacketdump/ospf2_1001.c @ e78e408

/*
 *
 * 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) {
        unsigned char *link_ptr = NULL;
        libtrace_ospf_link_v2_t *link = NULL;
        uint32_t link_len;
        libtrace_ospf_router_lsa_v2_t *hdr;

        int i = 0;

        hdr = (libtrace_ospf_router_lsa_v2_t *)packet;

        if (len < 4)
                return;
        
        printf(" OSPF Router LSA: Links %u ", ntohs(hdr->num_links));
        if (hdr->v)
                printf("V ");
        if (hdr->e) 
                printf("E ");
        if (hdr->b)
                printf("B ");
        printf("\n");

        link_ptr = trace_get_first_ospf_link_from_router_lsa_v2(hdr, &len);

        if (!link_ptr || len == 0)
                return;
        while (trace_get_next_ospf_link_v2(&link_ptr, &link, &len, &link_len) > 0) {
                if (!link) {
                        break;
                }
                printf(" OSPF Router Link: Id %s ", inet_ntoa(link->link_id));
                printf("Data %s\n", inet_ntoa(link->link_data));
                printf(" OSPF Router Link: Type %u TOS %u Metric %u\n",
                                link->type, link->num_tos,
                                ntohs(link->tos_metric));
                i++;
                if (i == ntohs(hdr->num_links))
                        break;
        }
}