1 /*
2 * Copyright (c) 2016-2017, Marie Helene Kvello-Aune
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * thislist of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation and/or
13 * other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
17 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <arpa/inet.h>
28 #include <net/if.h>
29
30 #include <err.h>
31 #include <errno.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <libifconfig.h>
36
37
38 int
main(int argc,char * argv[])39 main(int argc, char *argv[])
40 {
41 char *ifname, *ifdescr, *curdescr;
42 ifconfig_handle_t *lifh;
43
44 if (argc != 3) {
45 errx(EINVAL, "Invalid number of arguments."
46 " First argument should be interface name, second argument"
47 " should be the description to set.");
48 }
49
50 /* We have a static number of arguments. Therefore we can do it simple. */
51 ifname = strdup(argv[1]);
52 ifdescr = strdup(argv[2]);
53 curdescr = NULL;
54
55 printf("Interface name: %s\n", ifname);
56
57 lifh = ifconfig_open();
58 if (lifh == NULL) {
59 errx(ENOMEM, "Failed to open libifconfig handle.");
60 return (-1);
61 }
62
63 if (ifconfig_get_description(lifh, ifname, &curdescr) == 0) {
64 printf("Old description: %s\n", curdescr);
65 }
66
67 printf("New description: %s\n\n", ifdescr);
68
69 if (ifconfig_set_description(lifh, ifname, ifdescr) == 0) {
70 printf("New description successfully set.\n");
71 } else {
72 switch (ifconfig_err_errtype(lifh)) {
73 case SOCKET:
74 err(ifconfig_err_errno(lifh), "Socket error");
75 break;
76 case IOCTL:
77 err(ifconfig_err_errno(
78 lifh), "IOCTL(%lu) error",
79 ifconfig_err_ioctlreq(lifh));
80 break;
81 default:
82 err(ifconfig_err_errno(lifh), "Other error");
83 break;
84 }
85 }
86
87 free(ifname);
88 free(ifdescr);
89 free(curdescr);
90 ifname = NULL;
91 ifdescr = NULL;
92 curdescr = NULL;
93
94 ifconfig_close(lifh);
95 return (0);
96 }
97