8a363d18bb
that it can't contact an NIS server when asked to change the password of an invalid user. It should say 'unknown user' instead. The fix is to check for the _PW_KEYYPENABLED flag in the password database and only roll over into the yppasswd stuff if the flag is enabled (this means passwd will not behave as yppasswd if there are no +::::::::: entries in /etc/master.passwd). If NIS is enabled but the user says 'passwd -l foouser' where foouser exists in the NIS maps, but not in /etc/master.passwd, we also say 'unknown user.' This is so we don't outsmart ourselves: specifying the -l flag restricts passwd to the local password database even if NIS is enabled. This change should probably be merged into 2.1.
248 lines
6.0 KiB
C
248 lines
6.0 KiB
C
/*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1988, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "From: @(#)passwd.c 8.3 (Berkeley) 4/2/94";
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static const char rcsid[] =
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"$Id: passwd.c,v 1.3 1995/01/31 08:34:05 wpaul Exp $";
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#endif /* not lint */
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifdef YP
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#include <pwd.h>
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#include <limits.h>
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#include <db.h>
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#include <fcntl.h>
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#include <utmp.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#endif
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#ifdef KERBEROS
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#include "krb.h"
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#endif
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#include "extern.h"
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void usage __P((void));
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int use_local_passwd = 0;
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#ifdef YP
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#define PERM_SECURE (S_IRUSR|S_IWUSR)
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int use_yp_passwd = 0, opt_shell = 0, opt_fullname = 0;
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char *prog_name;
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HASHINFO openinfo = {
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4096, /* bsize */
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32, /* ffactor */
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256, /* nelem */
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2048 * 1024, /* cachesize */
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NULL, /* hash */
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0, /* lorder */
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};
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#endif
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int ch;
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char *uname;
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char *iflag = 0, *rflag = 0, *uflag = 0;
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#ifdef YP
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#ifdef KERBEROS
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char realm[REALM_SZ];
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#define OPTIONS "lysfi:r:u:"
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#else
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#define OPTIONS "lysf"
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#endif
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#else
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#ifdef KERBEROS
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char realm[REALM_SZ];
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#define OPTIONS "li:r:u:"
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#else
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#define OPTIONS "l"
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#endif
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#endif
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#ifdef YP
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DB *dbp;
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DBT key,data;
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char bf[UT_NAMESIZE + 2];
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if (strstr(argv[0], (prog_name = "ypchpass")))
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use_yp_passwd = opt_shell = opt_fullname = 1;
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if (strstr(argv[0], (prog_name = "ypchsh"))) opt_shell = 1;
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if (strstr(argv[0], (prog_name = "ypchfn"))) opt_fullname = 1;
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if (strstr(argv[0], (prog_name = "yppasswd"))) use_yp_passwd = 1;
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#endif
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while ((ch = getopt(argc, argv, OPTIONS)) != EOF) {
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switch (ch) {
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case 'l': /* change local password file */
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use_local_passwd = 1;
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break;
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#ifdef KERBEROS
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case 'i':
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iflag = optarg;
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break;
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case 'r':
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rflag = optarg;
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break;
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case 'u':
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uflag = optarg;
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break;
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#endif /* KERBEROS */
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#ifdef YP
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case 'y': /* Change NIS password */
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use_yp_passwd = 1;
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break;
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case 's': /* Change NIS shell field */
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opt_shell = 1;
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break;
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case 'f': /* Change NIS GECOS field */
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opt_fullname = 1;
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break;
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#endif
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default:
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case '?':
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if ((uname = getlogin()) == NULL)
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err(1, "getlogin");
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switch(argc) {
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case 0:
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break;
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case 1:
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uname = argv[0];
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break;
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default:
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usage();
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}
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#ifdef YP
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/*
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* If NIS is turned on in the password database, use it, else punt.
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*/
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#ifdef KERBEROS
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if (iflag == NULL && rflag == NULL && uflag == NULL) {
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#endif
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if ((dbp = dbopen(_PATH_MP_DB, O_RDONLY, PERM_SECURE,
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DB_HASH, &openinfo)) == NULL)
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errx(1, "error opening database: %s.", _PATH_MP_DB);
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bf[0] = _PW_KEYYPENABLED;
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key.data = (u_char *)bf;
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key.size = 1;
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if ((dbp->get)(dbp,&key,&data,0))
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(dbp->close)(dbp);
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else {
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if (!use_local_passwd) {
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(dbp->close)(dbp);
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exit(yp_passwd(uname));
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} else {
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/*
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* Reject -l flag if NIS is turned on and the user
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* doesn't exist in the local password database.
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*/
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bf[0] = _PW_KEYBYNAME;
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bcopy(uname, bf + 1, MIN(strlen(uname), UT_NAMESIZE));
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key.data = (u_char *)bf;
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key.size = strlen(uname) + 1;
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if ((dbp->get)(dbp,&key,&data,0)) {
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(dbp->close)(dbp);
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errx(1, "unknown local user: %s.", uname);
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}
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(dbp->close)(dbp);
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}
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}
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#ifdef KERBEROS
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}
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#endif
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#endif
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if (!use_local_passwd) {
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#ifdef KERBEROS
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if(krb_get_lrealm(realm, 0) == KSUCCESS) {
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fprintf(stderr, "realm %s\n", realm);
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exit(krb_passwd(argv[0], iflag, rflag, uflag));
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}
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#endif
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}
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exit(local_passwd(uname));
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}
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void
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usage()
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{
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#ifdef YP
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#ifdef KERBEROS
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fprintf(stderr,
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"usage: passwd [-l] [-i instance] [-r realm] [-u fullname]\n");
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fprintf(stderr,
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" [-l] [-y] [-f] [-s] [user]\n");
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#else
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(void)fprintf(stderr, "usage: passwd [-l] [-y] [-f] [-s] [user] \n");
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#endif
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#else
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#ifdef KERBEROS
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fprintf(stderr,
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"usage: passwd [-l] [-i instance] [-r realm] [-u fullname] [user]\n");
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#else
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(void)fprintf(stderr, "usage: passwd user\n");
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#endif
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#endif
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exit(1);
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}
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