NetBSD/usr.bin/passwd/passwd.c

170 lines
4.6 KiB
C

/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* 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.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1988 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
/*static char sccsid[] = "from: @(#)passwd.c 5.5 (Berkeley) 7/6/91";*/
static char rcsid[] = "$Id: passwd.c,v 1.4 1993/08/01 18:10:20 mycroft Exp $";
#endif /* not lint */
#include <stdio.h>
#include <unistd.h>
/*
* Note on configuration:
* Generally one would not use both Kerberos and YP
* to maintain passwords.
*
*/
#ifdef KERBEROS
int use_kerberos = 1;
#else
int use_kerberos = 0;
#endif
#ifdef YP
int force_yp = 0;
int use_yp;
#else
int use_yp = 0;
#endif
main(argc, argv)
int argc;
char **argv;
{
extern int optind;
register int ch;
char *uname;
int status;
#ifdef YP
use_yp = _yp_check(NULL);
#endif
while ((ch = getopt(argc, argv, "lky")) != EOF)
switch (ch) {
case 'l': /* change local password file */
use_kerberos = 0;
use_yp = 0;
break;
case 'k': /* change Kerberos password */
#ifdef KERBEROS
use_kerberos = 1;
use_yp = 0;
break;
#else
usage();
exit(1);
#endif
case 'y': /* change YP password */
#ifdef YP
if (!use_yp) {
fprintf(stderr, "passwd: YP not in use.\n");
usage();
exit(1);
}
/* XXX Maybe just exec yppasswd ?? */
use_kerberos = 0;
use_yp = 1;
force_yp = 1;
break;
#else
usage();
exit(1);
#endif
default:
case '?':
usage();
exit(1);
}
argc -= optind;
argv += optind;
uname = getlogin();
if (uname == NULL) {
fprintf(stderr, "passwd: who are you ??\n");
exit(1);
}
switch(argc) {
case 0:
break;
case 1:
#ifdef KERBEROS
if (use_kerberos && strcmp(argv[1], uname)) {
(void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n",
"to change another user's Kerberos password, do",
"\"kinit user; passwd; kdestroy\";",
"to change a user's local passwd, use \"passwd -l user\"");
exit(1);
}
#endif
uname = argv[0];
break;
default:
usage();
exit(1);
}
#ifdef KERBEROS
if (use_kerberos)
exit(krb_passwd());
#endif
#ifdef YP
if (force_yp || ((status = local_passwd(uname)) && use_yp))
exit(yp_passwd(uname));
exit(status);
#endif
exit(local_passwd(uname));
}
usage()
{
#if defined(KERBEROS) && defined(YP)
(void)fprintf(stderr, "usage: passwd [-l] [-k] [-y] user\n");
#else /* !(KERBEROS && YP) */
#if defined(KERBEROS) || defined(YP)
(void)fprintf(stderr, "usage: passwd [-l] user\n");
#else
(void)fprintf(stderr, "usage: passwd user\n");
#endif
#endif /* KERBEROS && YP */
}