1 /* $OpenBSD: passwd.c,v 1.27 2015/11/26 19:01:47 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 1988 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36 #include <err.h>
37
38 extern int local_passwd(char *, int);
39 void usage(int retval);
40
41 int
main(int argc,char ** argv)42 main(int argc, char **argv)
43 {
44 extern int optind;
45 char *username;
46 int ch;
47
48 /* Process args and options */
49 while ((ch = getopt(argc, argv, "")) != -1)
50 switch (ch) {
51 default:
52 usage(1);
53 }
54
55 argc -= optind;
56 argv += optind;
57
58 username = getlogin();
59 if (username == NULL) {
60 fprintf(stderr, "passwd: who are you ??\n");
61 exit(1);
62 }
63
64 switch (argc) {
65 case 0:
66 break;
67 case 1:
68 username = argv[0];
69 break;
70 default:
71 usage(1);
72 }
73
74 exit(local_passwd(username, 0));
75 }
76
77 void
usage(int retval)78 usage(int retval)
79 {
80 fprintf(stderr, "usage: passwd [user]\n");
81 exit(retval);
82 }
83