NetBSD/usr.bin/passwd/passwd.c

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/* $NetBSD: passwd.c,v 1.14 1999/08/26 07:33:16 marc Exp $ */
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/*
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* Copyright (c) 1988, 1993, 1994
* The Regents of the University of California. All rights reserved.
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*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
#ifndef lint
#if 0
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static char sccsid[] = "from: @(#)passwd.c 8.3 (Berkeley) 4/2/94";
#else
__RCSID("$NetBSD: passwd.c,v 1.14 1999/08/26 07:33:16 marc Exp $");
#endif
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#endif /* not lint */
#include <err.h>
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#include <stdio.h>
#include <string.h>
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#include <unistd.h>
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#include "extern.h"
void usage __P((void));
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/*
* Note on configuration:
* Generally one would not use both Kerberos and YP
* to maintain passwords.
*/
int use_kerberos;
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int use_yp;
int yppwd;
int yflag;
extern char *__progname; /* from crt0.o */
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int main __P((int, char **));
#ifdef YP
extern int _yp_check __P((char **)); /* buried deep inside libc */
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#endif
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int
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main(argc, argv)
int argc;
char **argv;
{
extern int optind;
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int ch;
char *username;
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#if defined(KERBEROS) || defined(KERBEROS5)
char *iflag = 0, *rflag = 0, *uflag = 0;
if (strcmp(__progname, "kpasswd") == 0)
use_kerberos = 1;
else
use_kerberos = krb_check();
#endif
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#ifdef YP
use_yp = _yp_check(NULL);
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#endif
if (strcmp(__progname, "yppasswd") == 0) {
#ifdef YP
if (!use_yp)
errx(1, "YP not in use.");
use_kerberos = 0;
yppwd = 1;
#else
errx(1, "YP support not compiled in.");
#endif
}
while ((ch = getopt(argc, argv, "lkyi:r:u:")) != -1)
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switch (ch) {
case 'l': /* change local password file */
if (yppwd)
usage();
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use_kerberos = 0;
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use_yp = 0;
break;
#ifdef KERBEROS
case 'i':
iflag = optarg;
break;
case 'r':
rflag = optarg;
break;
case 'u':
uflag = optarg;
break;
#endif
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case 'k': /* change Kerberos password */
#if defined(KERBEROS) || defined(KERBEROS5)
if (yppwd)
usage();
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use_kerberos = 1;
use_yp = 0;
break;
#endif
#ifndef KERBEROS
case 'i':
case 'r':
case 'u':
errx(1, "Kerberos4 support not compiled in.");
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#endif
case 'y': /* change YP password */
#ifdef YP
if (yppwd)
usage();
if (!use_yp)
errx(1, "YP not in use.");
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use_kerberos = 0;
yflag = 1;
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break;
#else
errx(1, "YP support not compiled in.");
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#endif
default:
usage();
}
argc -= optind;
argv += optind;
username = getlogin();
if (username == NULL)
errx(1, "who are you ??");
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switch(argc) {
case 0:
break;
case 1:
#ifdef KERBEROS5
if (use_kerberos && strcmp(argv[0], username)) {
errx(1, "%s\n\t%s\n%s\n",
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"to change another user's Kerberos password, do",
"\"kinit <user>; passwd; kdestroy\";",
"to change a user's local passwd, use\
\"passwd -l <user>\"");
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}
#endif
username = argv[0];
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break;
default:
usage();
exit(1);
}
#if defined(KERBEROS) || defined(KERBEROS5)
if (uflag && (iflag || rflag))
errx(1, "-u cannot be used with -r or -i");
if (use_kerberos)
exit(kadm_passwd(username, iflag, rflag, uflag));
#else
#ifdef KERBEROS5
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if (use_kerberos)
exit(krb_passwd());
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#endif
#endif
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#ifdef YP
if (use_yp)
exit(yp_passwd(username));
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#endif
exit(local_passwd(username));
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}
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void
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usage()
{
if (yppwd)
fprintf(stderr, "usage: %s user\n", __progname);
else
fprintf(stderr, "usage: %s [-l] [-k] [-y] [-i instance] [-r realm] [-u fullname] user\n", __progname);
exit(1);
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}