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

1.1     ! misho       1: /*
        !             2:  *  $Id: get_addr.c,v 1.3 2004/01/03 20:31:01 mike Exp $
        !             3:  *
        !             4:  *  libnet 1.1
        !             5:  *  get_addr.c - Retrieve the MAC and IP address of an interface
        !             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: #ifdef __WIN32__
        !            38: #include "../include/win32/getopt.h"
        !            39: #endif
        !            40: 
        !            41: int
        !            42: main(int argc, char *argv[])
        !            43: {
        !            44:     int c;
        !            45:     u_long i;
        !            46:     libnet_t *l;
        !            47:     char *device = NULL;
        !            48:     struct libnet_ether_addr *e;
        !            49:     char errbuf[LIBNET_ERRBUF_SIZE];
        !            50: 
        !            51:     printf("libnet 1.1 address getter\n");
        !            52: 
        !            53:     while ((c = getopt(argc, argv, "i:")) != EOF)
        !            54:     {
        !            55:         switch (c)
        !            56:         {
        !            57:             case 'i':
        !            58:                 device = optarg;
        !            59:                 break;
        !            60:             default:
        !            61:                 exit(EXIT_FAILURE);
        !            62:         }
        !            63:     }
        !            64: 
        !            65:     /*
        !            66:      *  Initialize the library.  Root priviledges are required.
        !            67:      */
        !            68:     l = libnet_init(
        !            69:             LIBNET_LINK,                            /* injection type */
        !            70:             device,                                 /* network interface */
        !            71:             errbuf);                                /* errbuf */
        !            72: 
        !            73:     if (l == NULL)
        !            74:     {
        !            75:         fprintf(stderr, "libnet_init() failed: %s", errbuf);
        !            76:         exit(EXIT_FAILURE);
        !            77:     }
        !            78: 
        !            79:        printf("Interface:\t%s\n", libnet_getdevice(l));
        !            80:     e = libnet_get_hwaddr(l);
        !            81:     if (e == NULL)
        !            82:     {
        !            83:         fprintf(stderr, "Can't get hardware address: %s\n", libnet_geterror(l));
        !            84:     }
        !            85:     else
        !            86:     {
        !            87:         printf("MAC address:\t");
        !            88:         for (c = 0; c < 6; c++)
        !            89:         {
        !            90:             printf("%2.2x", e->ether_addr_octet[c]);
        !            91:             if (c != 5)
        !            92:             {
        !            93:                 printf(":");
        !            94:             }
        !            95:         }
        !            96:         printf("\n");
        !            97:     }
        !            98: 
        !            99:     i = libnet_get_ipaddr4(l);
        !           100:     if (i == -1)
        !           101:     {
        !           102:         fprintf(stderr, "Can't get ip address: %s\n", libnet_geterror(l));
        !           103:     }
        !           104:     else
        !           105:     {
        !           106:         printf("IP  address:\t");
        !           107:         printf("%s\n", libnet_addr2name4(i, LIBNET_DONT_RESOLVE));
        !           108:     }
        !           109:     exit(EXIT_SUCCESS);
        !           110: }
        !           111: 
        !           112: /* EOF */