Annotation of embedaddon/libnet/sample/get_addr.c, revision 1.1.1.3
1.1 misho 1: /*
1.1.1.2 misho 2: * $Id: get_addr.c,v 1.4 2004/11/09 07:05:07 mike Exp $
1.1 misho 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: #include "./libnet_test.h"
34:
35: int
36: main(int argc, char *argv[])
37: {
38: int c;
39: u_long i;
40: libnet_t *l;
41: char *device = NULL;
42: struct libnet_ether_addr *e;
43: char errbuf[LIBNET_ERRBUF_SIZE];
44:
45: printf("libnet 1.1 address getter\n");
46:
47: while ((c = getopt(argc, argv, "i:")) != EOF)
48: {
49: switch (c)
50: {
51: case 'i':
52: device = optarg;
53: break;
54: default:
55: exit(EXIT_FAILURE);
56: }
57: }
58:
59: /*
60: * Initialize the library. Root priviledges are required.
61: */
62: l = libnet_init(
63: LIBNET_LINK, /* injection type */
64: device, /* network interface */
65: errbuf); /* errbuf */
66:
67: if (l == NULL)
68: {
69: fprintf(stderr, "libnet_init() failed: %s", errbuf);
70: exit(EXIT_FAILURE);
71: }
72:
1.1.1.2 misho 73: printf("Interface:\t%s\n", libnet_getdevice(l));
1.1 misho 74: e = libnet_get_hwaddr(l);
75: if (e == NULL)
76: {
77: fprintf(stderr, "Can't get hardware address: %s\n", libnet_geterror(l));
78: }
79: else
80: {
81: printf("MAC address:\t");
82: for (c = 0; c < 6; c++)
83: {
84: printf("%2.2x", e->ether_addr_octet[c]);
85: if (c != 5)
86: {
87: printf(":");
88: }
89: }
90: printf("\n");
91: }
92:
93: i = libnet_get_ipaddr4(l);
94: if (i == -1)
95: {
96: fprintf(stderr, "Can't get ip address: %s\n", libnet_geterror(l));
97: }
98: else
99: {
100: printf("IP address:\t");
101: printf("%s\n", libnet_addr2name4(i, LIBNET_DONT_RESOLVE));
102: }
103: exit(EXIT_SUCCESS);
104: }
105:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>