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

void main(int argc, char **argv) {
    pcap_t *fp;
    char errbuf[PCAP_ERRBUF_SIZE];
    int i;

    fp = pcap_open_live("eth1", 100, 1, 1000, errbuf);
    if (fp == NULL) {
        fprintf(stderr, "\nUnable to open eth1\n");
        return;
    }

    printf("Press ^C to exit\n");
    while (1) {
        u_char packet[100];

        /* Set destination mac to FF:FF:FF:FF:FF:FF (broadcast) */
        int x;
        for (x = 0; x <= 5; x++) {
            packet[x] = 0xFF;
        }

        /* Set source to a randomized mac */
        for (x = 6; x <= 11; x++) {
            int r = rand() % 0xFF;
            packet[x] = r;
        }

        /* Other garbage data */
        for (x = 12; x < 100; x++) {
            packet[x] = x%256;
        }

        if(pcap_sendpacket(fp, packet, 100) != 0) {
            fprintf(stderr, "\nError sending the packet: %s\n", pcap_geterr(fp));
            return;
        }
    }

    return;
}