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| #if (HAVE_CONFIG_H)
#if ((_WIN32) && !(__CYGWIN__))
#include "../include/win32/config.h"
#else
#include "../include/config.h"
#endif
#endif
#include "./libnet_test.h"
int c;
u_int32_t i;
libnet_t *l;
libnet_ptag_t t;
char *device = NULL;
u_int8_t *packet;
u_int32_t packet_s;
char errbuf[LIBNET_ERRBUF_SIZE];
void arp();
int main(int argc, char *argv[])
{
printf("libnet 1.1 packet shaping: ARP[link -- autobuilding ethernet]\n");
if (argc > 1)
{
device = argv[1];
}
l = libnet_init(
LIBNET_LINK_ADV, /* injection type */
device, /* network interface */
errbuf); /* errbuf */
if (l == NULL)
{
fprintf(stderr, "%s", errbuf);
exit(EXIT_FAILURE);
}
else
{
i = libnet_get_ipaddr4(l);
arp();
arp();
}
libnet_destroy(l);
return (EXIT_SUCCESS);
bad:
libnet_destroy(l);
return (EXIT_FAILURE);
}
void arp()
{
t = libnet_build_arp(
ARPHRD_ETHER, /* hardware addr */
ETHERTYPE_IP, /* protocol addr */
6, /* hardware addr size */
4, /* protocol addr size */
ARPOP_REPLY, /* operation type */
enet_src, /* sender hardware addr */
(u_int8_t *)&i, /* sender protocol addr */
enet_dst, /* target hardware addr */
(u_int8_t *)&i, /* target protocol addr */
NULL, /* payload */
0, /* payload size */
l, /* libnet context */
0); /* libnet id */
if (t == -1)
{
fprintf(stderr, "Can't build ARP header: %s\n", libnet_geterror(l));
}
t = libnet_autobuild_ethernet(
enet_dst, /* ethernet destination */
ETHERTYPE_ARP, /* protocol type */
l); /* libnet handle */
if (t == -1)
{
fprintf(stderr, "Can't build ethernet header: %s\n",
libnet_geterror(l));
}
if (libnet_adv_cull_packet(l, &packet, &packet_s) == -1)
{
fprintf(stderr, "%s", libnet_geterror(l));
}
else
{
fprintf(stderr, "packet size: %d\n", packet_s);
libnet_adv_free_packet(l, packet);
}
c = libnet_write(l);
if (c == -1)
{
fprintf(stderr, "Write error: %s\n", libnet_geterror(l));
}
else
{
fprintf(stderr, "Wrote %d byte ARP packet from context \"%s\"; "
"check the wire.\n", c, libnet_cq_getlabel(l));
}
}
/* EOF */ |
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