NetBSD/usr.bin/chpass/pw_yp.c

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/* $NetBSD: pw_yp.c,v 1.18 2000/10/27 16:16:03 phil Exp $ */
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/*
* 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.
*/
#include <sys/cdefs.h>
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#ifndef lint
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#if 0
static char sccsid[] = "@(#)pw_yp.c 1.0 2/2/93";
#else
__RCSID("$NetBSD: pw_yp.c,v 1.18 2000/10/27 16:16:03 phil Exp $");
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#endif
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#endif /* not lint */
#ifdef YP
#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <pwd.h>
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#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
#include <time.h>
#include <unistd.h>
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#include <rpc/rpc.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
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#define passwd yp_passwd_rec
#include <rpcsvc/yppasswd.h>
#undef passwd
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#include "chpass.h"
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static char *domain;
/*
* Check if rpc.yppasswdd is running on the master YP server.
* XXX this duplicates some code, but is much less complex
* than the alternative.
*/
int
check_yppasswdd()
{
char *master;
int rpcport;
/*
* Get local domain
*/
if (!domain && yp_get_default_domain(&domain) != 0)
return (1);
/*
* Find the host for the passwd map; it should be running
* the daemon.
*/
master = NULL;
if (yp_master(domain, "passwd.byname", &master) != 0) {
if (master != NULL)
free (master);
return (1);
}
/*
* Ask the portmapper for the port of the daemon.
*/
if ((rpcport = getrpcport(master, YPPASSWDPROG, YPPASSWDPROC_UPDATE,
IPPROTO_UDP)) == 0)
return (1);
/*
* Successful contact with rpc.yppasswdd.
*/
return (0);
}
int
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pw_yp(pw, uid)
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struct passwd *pw;
uid_t uid;
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{
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char *master;
int r, rpcport, status;
struct yppasswd yppasswd;
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struct timeval tv;
CLIENT *client;
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/*
* Get local domain
*/
if (!domain && (r = yp_get_default_domain(&domain)))
errx(1, "can't get local YP domain. Reason: %s",
yperr_string(r));
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/*
* Find the host for the passwd map; it should be running
* the daemon.
*/
master = NULL;
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if ((r = yp_master(domain, "passwd.byname", &master)) != 0) {
if (master)
free (master);
warnx("can't find the master YP server. Reason: %s",
yperr_string(r));
return (1);
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}
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/*
* Ask the portmapper for the port of the daemon.
*/
if ((rpcport = getrpcport(master, YPPASSWDPROG, YPPASSWDPROC_UPDATE,
IPPROTO_UDP)) == 0) {
warnx("master YP server not running yppasswd daemon.\n\t%s\n",
"Can't change password.");
return (1);
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}
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/*
* Be sure the port is privileged
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*/
if (rpcport >= IPPORT_RESERVED) {
warnx("yppasswd daemon is on an invalid port.");
return (1);
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}
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/* prompt for old password */
memset(&yppasswd, 0, sizeof yppasswd);
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yppasswd.oldpass = "none";
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yppasswd.oldpass = getpass("Old password:");
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if (!yppasswd.oldpass) {
warnx("Cancelled.");
return (1);
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}
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/* tell rpc.yppasswdd */
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yppasswd.newpw.pw_name = strdup(pw->pw_name);
yppasswd.newpw.pw_passwd = strdup(pw->pw_passwd);
yppasswd.newpw.pw_uid = pw->pw_uid;
yppasswd.newpw.pw_gid = pw->pw_gid;
yppasswd.newpw.pw_gecos = strdup(pw->pw_gecos);
yppasswd.newpw.pw_dir = strdup(pw->pw_dir);
yppasswd.newpw.pw_shell = strdup(pw->pw_shell);
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client = clnt_create(master, YPPASSWDPROG, YPPASSWDVERS, "udp");
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if (client == NULL) {
warnx("cannot contact yppasswdd on %s: Reason: %s",
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master, yperr_string(YPERR_YPBIND));
return (1);
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}
client->cl_auth = authunix_create_default();
tv.tv_sec = 5;
tv.tv_usec = 0;
r = clnt_call(client, YPPASSWDPROC_UPDATE,
xdr_yppasswd, &yppasswd, xdr_int, &status, tv);
if (r) {
warnx("rpc to yppasswdd failed.");
return (1);
} else if (status)
printf("Couldn't change YP password.\n");
else
printf("%s %s, %s\n",
"The YP password information has been changed on",
master, "the master YP passwd server.");
return (0);
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}
void
yppw_error(name, err, eval)
const char *name;
int err, eval;
{
if (err) {
if (name)
warn("%s", name);
else
warn(NULL);
}
errx(eval, "YP passwd information unchanged");
}
void
yppw_prompt()
{
int c;
(void)printf("re-edit the password file? [y]: ");
(void)fflush(stdout);
c = getchar();
if (c != EOF && c != '\n')
while (getchar() != '\n');
if (c == 'n')
yppw_error(NULL, 0, 0);
}
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#endif /* YP */