source: libpacketdump/ospf2_4.c @ 756b8f9

#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_ls_update_t *update = (libtrace_ospf_ls_update_t *)packet;
        unsigned char *lsa_ptr;
        uint8_t lsa_type;
        libtrace_ospf_lsa_v2_t *lsa_hdr;
        unsigned char *lsa_body;
        int i = 0;
        int max_lsas = 0;
        uint32_t rem = len;
        uint16_t lsa_length;


        if (len < 4)
                return;
        max_lsas = ntohl(update->ls_num_adv);
        printf(" OSPF LS Update: LSAs %u\n", max_lsas);
        

        lsa_ptr = trace_get_first_ospf_lsa_from_update_v2(update, &rem);

        if (lsa_ptr == NULL || rem == 0)
                return;

        while (trace_get_next_ospf_lsa_v2(&lsa_ptr, &lsa_hdr, &lsa_body,
                        &rem, &lsa_type, &lsa_length) > 0) {

                i ++;
                if (lsa_hdr) {

                        decode_next((char *)lsa_hdr, lsa_length, "ospf2", 1000);
                }       

                if (lsa_body) {
                        decode_next((char *)lsa_body, lsa_length - 
                                        sizeof(libtrace_ospf_lsa_v2_t),
                                        "ospf2",
                                        1000 + lsa_type);
                }

                if (i == max_lsas)
                        break;


        }
}