/* $NetBSD: pw_yp.c,v 1.23 2015/06/17 00:01:59 christos Exp $ */
/*
* 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. 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>
#ifndef lint
#if 0
static char sccsid[] = "@(#)pw_yp.c 1.0 2/2/93";
#else
__RCSID("$NetBSD: pw_yp.c,v 1.23 2015/06/17 00:01:59 christos Exp $");
#endif
#endif /* not lint */
#ifdef YP
#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#define passwd yp_passwd_rec
#include <rpcsvc/yppasswd.h>
#undef passwd
#include "chpass.h"
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(void)
{
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
pw_yp(struct passwd *pw, uid_t ypuid)
{
char *master;
int r, rpcport, status;
struct yppasswd yppw;
struct timeval tv;
CLIENT *client;
/*
* Get local domain
*/
if (!domain && (r = yp_get_default_domain(&domain)))
errx(1, "can't get local YP domain. Reason: %s",
yperr_string(r));
/*
* Find the host for the passwd map; it should be running
* the daemon.
*/
master = NULL;
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);
}
/*
* 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",
"Can't change password.");
return (1);
}
/*
* Be sure the port is privileged
*/
if (rpcport >= IPPORT_RESERVED) {
warnx("yppasswd daemon is on an invalid port.");
return (1);
}
/* prompt for old password */
memset(&yppw, 0, sizeof yppw);
yppw.oldpass = getpass("Old password:");
if (!yppw.oldpass) {
warnx("Cancelled.");
return (1);
}
/* tell rpc.yppasswdd */
yppw.newpw.pw_name = strdup(pw->pw_name);
if (!yppw.newpw.pw_name) {
err(1, "strdup");
/*NOTREACHED*/
}
yppw.newpw.pw_passwd = strdup(pw->pw_passwd);
if (!yppw.newpw.pw_passwd) {
err(1, "strdup");
/*NOTREACHED*/
}
yppw.newpw.pw_uid = pw->pw_uid;
yppw.newpw.pw_gid = pw->pw_gid;
yppw.newpw.pw_gecos = strdup(pw->pw_gecos);
if (!yppw.newpw.pw_gecos) {
err(1, "strdup");
/*NOTREACHED*/
}
yppw.newpw.pw_dir = strdup(pw->pw_dir);
if (!yppw.newpw.pw_dir) {
err(1, "strdup");
/*NOTREACHED*/
}
yppw.newpw.pw_shell = strdup(pw->pw_shell);
if (!yppw.newpw.pw_shell) {
err(1, "strdup");
/*NOTREACHED*/
}
client = clnt_create(master, YPPASSWDPROG, YPPASSWDVERS, "udp");
if (client == NULL) {
warnx("cannot contact yppasswdd on %s: Reason: %s",
master, yperr_string(YPERR_YPBIND));
return (1);
}
client->cl_auth = authunix_create_default();
tv.tv_sec = 5;
tv.tv_usec = 0;
r = clnt_call(client, YPPASSWDPROC_UPDATE,
xdr_yppasswd, &yppw, 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);
}
void
yppw_error(const char *name, int yperr, int eval)
{
if (yperr) {
if (name)
warn("%s", name);
else
warn(NULL);
}
errx(eval, "YP passwd information unchanged");
}
void
yppw_prompt(void)
{
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);
}
#endif /* YP */
