passwd.c revision 1590 
1/*
2 * Copyright (c) 1988, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char copyright[] =
36"@(#) Copyright (c) 1988, 1993, 1994\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)passwd.c	8.3 (Berkeley) 4/2/94";
42#endif /* not lint */
43
44#include <err.h>
45#include <errno.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <unistd.h>
49
50#include "extern.h"
51
52void	usage __P((void));
53
54#ifdef KERBEROS
55int use_kerberos = 1;
56#endif
57
58int
59main(argc, argv)
60	int argc;
61	char **argv;
62{
63	int ch;
64	char *uname;
65
66	while ((ch = getopt(argc, argv, "l")) != EOF)
67		switch (ch) {
68#ifdef KERBEROS
69		case 'l':		/* change local password file */
70			use_kerberos = 0;
71			break;
72#endif
73		default:
74		case '?':
75			usage();
76		}
77
78	argc -= optind;
79	argv += optind;
80
81	if ((uname = getlogin()) == NULL)
82		err(1, "getlogin");
83
84	switch(argc) {
85	case 0:
86		break;
87	case 1:
88#ifdef	KERBEROS
89		if (use_kerberos && strcmp(argv[0], uname))
90			errx(1,"%s\n\t%s\n%s\n",
91		"to change another user's Kerberos password, do",
92		"\"kinit user; passwd; kdestroy\";",
93		"to change a user's local passwd, use \"passwd -l user\"");
94#endif
95		uname = argv[0];
96		break;
97	default:
98		usage();
99	}
100
101#ifdef	KERBEROS
102	if (use_kerberos)
103		exit(krb_passwd());
104#endif
105	exit(local_passwd(uname));
106}
107
108void
109usage()
110{
111
112#ifdef	KERBEROS
113	(void)fprintf(stderr, "usage: passwd [-l] user\n");
114#else
115	(void)fprintf(stderr, "usage: passwd user\n");
116#endif
117	exit(1);
118}
119