/*
 * Written by Pejman Moghadam / 1401-02-30
 * Public domain.
 *
 */

/* gcc src.c -lpcap */

#include <stdio.h>
#include <stdlib.h>
#include <pcap/pcap.h>

void packet_handler(u_char *user, const struct pcap_pkthdr *h, const u_char *bytes)
{
    static int packet_count = 0;
    printf("Packet Count: %5d\t", ++packet_count);
    printf("Recieved Packet Size: %5d\n", h->len);
}

int main()
{
    pcap_t *p;
    char errbuf[PCAP_ERRBUF_SIZE];
    p = pcap_open_offline("capture.pcap", errbuf);
    if (p == NULL) {
        fprintf(stderr, "\npcap_open_offline() failed: %s\n", errbuf);
        exit(EXIT_FAILURE);
    }

    if (pcap_loop(p, 0, packet_handler, NULL) < 0) {
        fprintf(stderr, "\npcap_loop() failed: %s\n", pcap_geterr(p));
        exit(EXIT_FAILURE);
    }

    return 0;
}