/*
 *
 * 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;
    }
}
