/*
* Copyright (c) 1988, 1990, 1993, 1994
* 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.
*/
if (_yp_check(NULL) == 0) {
/* can't use YP. */
errx(EXIT_FAILURE, "NIS not in use.");
}
uid = getuid();
/*
* Get local domain
*/
if ((r = yp_get_default_domain(&domain)) != 0)
errx(EXIT_FAILURE, "Can't get local NIS domain (%s)",
yperr_string(r));
/*
* Find the host for the passwd map; it should be running
* the daemon.
*/
if ((r = yp_master(domain, "passwd.byname", &master)) != 0)
errx(EXIT_FAILURE, "Can't find the master NIS server (%s)",
yperr_string(r));
/*
* Ask the portmapper for the port of the daemon.
*/
if ((rpcport = getrpcport(master, YPPASSWDPROG,
YPPASSWDPROC_UPDATE, IPPROTO_UDP)) == 0)
errx(EXIT_FAILURE, "Master NIS server not running yppasswd "
"daemon");
/*
* Be sure the port is privileged
*/
if (rpcport >= IPPORT_RESERVED)
errx(EXIT_FAILURE, "Yppasswd daemon is on an invalid port");
/* Bail out if this is a local (non-yp) user, */
/* then get user's login identity */
if (!ypgetpwnam(username, &pwb) ||
getpwnam_r(username, &pwb2, pwbuf, sizeof(pwbuf), &pw) ||
pw == NULL)
errx(EXIT_FAILURE, "NIS unknown user %s", username);
if (uid && uid != pwb.pw_uid) {
errno = EACCES;
err(EXIT_FAILURE, "You may only change your own password");
}
makeypp(&ypp, &pwb);
client = clnt_create(master, YPPASSWDPROG, YPPASSWDVERS, "udp");
if (client == NULL)
errx(EXIT_FAILURE, "Cannot contact yppasswdd on %s (%s)",
master, yperr_string(YPERR_YPBIND));
client->cl_auth = authunix_create_default();
tv.tv_sec = 2;
tv.tv_usec = 0;
yr = clnt_call(client, YPPASSWDPROC_UPDATE,
xdr_yppasswd, &ypp, xdr_int, &status, tv);
if (yr != RPC_SUCCESS)
errx(EXIT_FAILURE, "RPC to yppasswdd failed (%s)",
clnt_sperrno(yr));
else if (status)
printf("Couldn't change NIS password.\n");
else
printf("The NIS password has been changed on %s, %s\n",
master, "the master NIS passwd server.");
}
#else /* ! USE_PAM */
static int yflag;
int
yp_init(const char *progname)
{
int yppwd;
if (strcmp(progname, "yppasswd") == 0) {
yppwd = 1;
} else
yppwd = 0;
yflag = 0;
if (_yp_check(NULL) == 0) {
/* can't use YP. */
if (yppwd)
errx(EXIT_FAILURE, "NIS not in use");
return -1;
}
return 0;
}
/*
* Get local domain
*/
if ((r = yp_get_default_domain(&domain)) != 0)
errx(EXIT_FAILURE, "can't get local NIS domain. Reason: %s",
yperr_string(r));
/*
* Find the host for the passwd map; it should be running
* the daemon.
*/
if ((r = yp_master(domain, "passwd.byname", &master)) != 0) {
warnx("can't find the master NIS server. Reason: %s",
yperr_string(r));
/* continuation */
return -1;
}
/*
* Ask the portmapper for the port of the daemon.
*/
if ((rpcport = getrpcport(master, YPPASSWDPROG,
YPPASSWDPROC_UPDATE, IPPROTO_UDP)) == 0) {
warnx("Master NIS server not running yppasswd daemon");
/* continuation */
return -1;
}
/*
* Be sure the port is privileged
*/
if (rpcport >= IPPORT_RESERVED)
errx(EXIT_FAILURE, "Yppasswd daemon is on an invalid port");
/* Bail out if this is a local (non-yp) user, */
/* then get user's login identity */
if (!ypgetpwnam(username, pw = &pwb) ||
getpwnam_r(username, &pwb, pwbuf, sizeof(pwbuf), &pw) ||
pw == NULL) {
warnx("NIS unknown user %s", username);
/* continuation */
return -1;
}
if (uid && uid != pw->pw_uid) {
errno = EACCES;
err(EXIT_FAILURE, "You may only change your own password");
}