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libnet

    1: /*
    2:  *  $Id: dot1x.c,v 1.1.1.1 2012/02/21 22:14:23 misho Exp $
    3:  *
    4:  *  libnet 1.1
    5:  *  Build a dot1x packet
    6:  *
    7:  *  Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
    8:  *  All rights reserved.
    9:  *
   10:  * Redistribution and use in source and binary forms, with or without
   11:  * modification, are permitted provided that the following conditions
   12:  * are met:
   13:  * 1. Redistributions of source code must retain the above copyright
   14:  *    notice, this list of conditions and the following disclaimer.
   15:  * 2. Redistributions in binary form must reproduce the above copyright
   16:  *    notice, this list of conditions and the following disclaimer in the
   17:  *    documentation and/or other materials provided with the distribution.
   18:  *
   19:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   23:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29:  * SUCH DAMAGE.
   30:  *
   31:  */
   32: 
   33: #if (HAVE_CONFIG_H)
   34: #include "../include/config.h"
   35: #endif
   36: #include "./libnet_test.h"
   37: 
   38: int
   39: main(int argc, char *argv[])
   40: {
   41:     int c;
   42:     libnet_t *l;
   43:     libnet_ptag_t t;
   44:     u_char eap_dst[6] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x03};
   45:     char *device = NULL;
   46:     char errbuf[LIBNET_ERRBUF_SIZE];
   47:     /* Code Id Length(2) Type DesiredType */
   48:     char payload[] = {0x01, 0x0a, 0x00, 0x7f, 0x03, 0x05};
   49: 
   50:     printf("libnet 1.1 packet shaping: dot1x\n");
   51: 
   52:     if (argc > 1)
   53:     {
   54:          device = argv[1];
   55:     }
   56:     l = libnet_init(
   57:             LIBNET_LINK_ADV,                        /* injection type */
   58:             device,                                 /* network interface */
   59:             errbuf);                                /* errbuf */
   60: 
   61:     if (l == NULL)
   62:     {
   63:         fprintf(stderr, "libnet_init() failed: %s", errbuf);
   64:         exit(EXIT_FAILURE);
   65:     }
   66: 
   67:     t = libnet_build_802_1x(
   68:             0,
   69:             LIBNET_802_1X_PACKET,
   70:             sizeof(payload),
   71:             payload,
   72:             sizeof(payload),
   73:             l,
   74:             0);
   75:     if (t == -1)
   76:     {
   77:         fprintf(stderr, "Can't build dot1x header: %s\n", libnet_geterror(l));
   78:         goto bad;
   79:     }
   80: 
   81:     t = libnet_autobuild_ethernet(
   82:             eap_dst,                                /* ethernet destination */
   83:             ETHERTYPE_EAP,                          /* protocol type */
   84:             l);                                     /* libnet handle */
   85:     if (t == -1)
   86:     {
   87:         fprintf(stderr, "Can't build ethernet header: %s\n", libnet_geterror(l));
   88:         goto bad;
   89:     }
   90: 
   91:     /*
   92:      *  Write it to the wire.
   93:      */
   94:     c = libnet_write(l);
   95: 
   96:     if (c == -1)
   97:     {
   98:         fprintf(stderr, "Write error: %s\n", libnet_geterror(l));
   99:         goto bad;
  100:     }
  101:     else
  102:     {
  103:         fprintf(stderr, "Wrote %d byte dot1x packet from context \"%s\"; "
  104:                 "check the wire.\n", c, libnet_cq_getlabel(l));
  105:     }
  106:     libnet_destroy(l);
  107:     return (EXIT_SUCCESS);
  108: bad:
  109:     libnet_destroy(l);
  110:     return (EXIT_FAILURE);
  111: }
  112: 
  113: /* EOF */