/*

 *  $Id: isl.c,v 1.2 2004/01/03 20:31:01 mike Exp $

 *

 *  libnet 1.1

 *  Build an ISL packet

 *

 *  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.

 *

 */

#if (HAVE_CONFIG_H)

#include "../include/config.h"

#endif

#include "./libnet_test.h"

int

main(int argc, char *argv[])

{

    int c, len;

    libnet_t *l;

    libnet_ptag_t t;

    u_char *dst;

    u_long ip;

    u_char dhost[5] = {0x01, 0x00, 0x0c, 0x00, 0x00};

    u_char snap[6]  = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};

    char *device = NULL;

    char errbuf[LIBNET_ERRBUF_SIZE];

    printf("libnet 1.1 packet shaping: [ISL]\n");

    device = NULL;

    dst = NULL;

    while ((c = getopt(argc, argv, "i:d:")) != EOF)

    {

        switch (c)

        {

            case 'd':

                dst = libnet_hex_aton(optarg, &len;;

                break;

            case 'i':

                device = optarg;

                break;

        }

    }

    if (dst == NULL)

    {

        fprintf(stderr, "usage %s -d dst [-i interface]\n",

                argv[0]);

        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);

    }

    ip = libnet_get_ipaddr4(l);

    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_char *)&ip,                          /* sender protocol addr */

            enet_dst,                               /* target hardware addr */

            (u_char *)&ip,                          /* target protocol addr */

            NULL,                                   /* payload */

            0,                                      /* payload size */

            l,                                      /* libnet handle */

            0);                                     /* libnet id */

    if (t == -1)

    {

        fprintf(stderr, "Can't build ARP header: %s\n", libnet_geterror(l));

        goto bad;

    }

    t = libnet_autobuild_ethernet(

            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));

        goto bad;

    }

    t = libnet_build_isl(

            dhost,

            0x0,

            0x0,

            enet_src,

            10 + 42,

            snap,

            10,

            0x8000,

            0,

            NULL,                                   /* payload */

            0,                                      /* payload size */

            l,                                      /* libnet handle */

            0);                                     /* libnet id */

    if (t == -1)

    {

        fprintf(stderr, "Can't build ISL header: %s\n", 

                libnet_geterror(l));

        goto bad;

    }

    /*

     *  Write it to the wire.

     */

    c = libnet_write(l);

    if (c == -1)

    {

        fprintf(stderr, "Write error: %s\n", libnet_geterror(l));

        goto bad;

    }

    else

    {

        fprintf(stderr, "Wrote %d byte ISL packet; check the wire.\n", c);

    }

    free(dst);

    libnet_destroy(l);

    return (EXIT_SUCCESS);

bad:

    free(dst);

    libnet_destroy(l);

    return (EXIT_FAILURE);

}

/* EOF */