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Annotation of embedaddon/libnet/sample/dot1x.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  *  $Id: dot1x.c,v 1.2 2004/01/03 20:31:01 mike 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 */