/*
* $Id: get_addr.c,v 1.1.1.3 2023/09/27 11:11:38 misho Exp $
*
* libnet 1.1
* get_addr.c - Retrieve the MAC and IP address of an interface
*
* Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "./libnet_test.h"
int
main(int argc, char *argv[])
{
int c;
u_long i;
libnet_t *l;
char *device = NULL;
struct libnet_ether_addr *e;
char errbuf[LIBNET_ERRBUF_SIZE];
printf("libnet 1.1 address getter\n");
while ((c = getopt(argc, argv, "i:")) != EOF)
{
switch (c)
{
case 'i':
device = optarg;
break;
default:
exit(EXIT_FAILURE);
}
}
/*
* Initialize the library. Root priviledges are required.
*/
l = libnet_init(
LIBNET_LINK, /* injection type */
device, /* network interface */
errbuf); /* errbuf */
if (l == NULL)
{
fprintf(stderr, "libnet_init() failed: %s", errbuf);
exit(EXIT_FAILURE);
}
printf("Interface:\t%s\n", libnet_getdevice(l));
e = libnet_get_hwaddr(l);
if (e == NULL)
{
fprintf(stderr, "Can't get hardware address: %s\n", libnet_geterror(l));
}
else
{
printf("MAC address:\t");
for (c = 0; c < 6; c++)
{
printf("%2.2x", e->ether_addr_octet[c]);
if (c != 5)
{
printf(":");
}
}
printf("\n");
}
i = libnet_get_ipaddr4(l);
if (i == -1)
{
fprintf(stderr, "Can't get ip address: %s\n", libnet_geterror(l));
}
else
{
printf("IP address:\t");
printf("%s\n", libnet_addr2name4(i, LIBNET_DONT_RESOLVE));
}
exit(EXIT_SUCCESS);
}
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