314 lines
8.8 KiB
C
314 lines
8.8 KiB
C
/*-
|
|
* Copyright (c) 2002 Networks Associates Technology, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed for the FreeBSD Project by ThinkSec AS and
|
|
* NAI Labs, the Security Research Division of Network Associates, Inc.
|
|
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
|
|
* DARPA CHATS research program.
|
|
*
|
|
* 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. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <netconfig.h>
|
|
#include <netdb.h>
|
|
#include <pwd.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <rpcsvc/ypclnt.h>
|
|
#include <rpcsvc/yppasswd.h>
|
|
|
|
#include "ypclnt.h"
|
|
#include "yppasswd_private.h"
|
|
|
|
static int yppasswd_remote(ypclnt_t *, const struct passwd *, const char *);
|
|
static int yppasswd_local(ypclnt_t *, const struct passwd *);
|
|
|
|
/*
|
|
* Determines the availability of rpc.yppasswdd. Returns -1 for not
|
|
* available (or unable to determine), 0 for available, 1 for available in
|
|
* master mode.
|
|
*/
|
|
int
|
|
ypclnt_havepasswdd(ypclnt_t *ypclnt)
|
|
{
|
|
struct netconfig *nc = NULL;
|
|
void *localhandle = NULL;
|
|
CLIENT *clnt = NULL;
|
|
int ret;
|
|
|
|
/* check if rpc.yppasswdd is running */
|
|
if (getrpcport(ypclnt->server, YPPASSWDPROG,
|
|
YPPASSWDPROC_UPDATE, IPPROTO_UDP) == 0) {
|
|
ypclnt_error(ypclnt, __func__, "no rpc.yppasswdd on server");
|
|
return (-1);
|
|
}
|
|
|
|
/* if we're not root, use remote method */
|
|
if (getuid() != 0)
|
|
return (0);
|
|
|
|
/* try to connect to rpc.yppasswdd */
|
|
localhandle = setnetconfig();
|
|
while ((nc = getnetconfig(localhandle)) != NULL) {
|
|
if (nc->nc_protofmly != NULL &&
|
|
strcmp(nc->nc_protofmly, NC_LOOPBACK) == 0)
|
|
break;
|
|
}
|
|
if (nc == NULL) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"getnetconfig: %s", nc_sperror());
|
|
ret = 0;
|
|
goto done;
|
|
}
|
|
if ((clnt = clnt_tp_create(NULL, MASTER_YPPASSWDPROG,
|
|
MASTER_YPPASSWDVERS, nc)) == NULL) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"failed to connect to rpc.yppasswdd: %s",
|
|
clnt_spcreateerror(ypclnt->server));
|
|
ret = 0;
|
|
goto done;
|
|
} else
|
|
ret = 1;
|
|
|
|
done:
|
|
if (clnt != NULL) {
|
|
clnt_destroy(clnt);
|
|
}
|
|
endnetconfig(localhandle);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Updates the NIS user information for the specified user.
|
|
*/
|
|
int
|
|
ypclnt_passwd(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
|
|
{
|
|
switch (ypclnt_havepasswdd(ypclnt)) {
|
|
case 0:
|
|
return (yppasswd_remote(ypclnt, pwd, passwd));
|
|
case 1:
|
|
return (yppasswd_local(ypclnt, pwd));
|
|
default:
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* yppasswd_remote and yppasswd_local are quite similar but still
|
|
* sufficiently different that merging them into one makes the code
|
|
* significantly less readable, IMHO, so we keep them separate.
|
|
*/
|
|
|
|
static int
|
|
yppasswd_local(ypclnt_t *ypclnt, const struct passwd *pwd)
|
|
{
|
|
struct master_yppasswd yppwd;
|
|
struct rpc_err rpcerr;
|
|
struct netconfig *nc = NULL;
|
|
void *localhandle = NULL;
|
|
CLIENT *clnt = NULL;
|
|
int ret, *result;
|
|
|
|
/* fill the master_yppasswd structure */
|
|
memset(&yppwd, 0, sizeof yppwd);
|
|
yppwd.newpw.pw_uid = pwd->pw_uid;
|
|
yppwd.newpw.pw_gid = pwd->pw_gid;
|
|
yppwd.newpw.pw_change = pwd->pw_change;
|
|
yppwd.newpw.pw_expire = pwd->pw_expire;
|
|
yppwd.newpw.pw_fields = pwd->pw_fields;
|
|
yppwd.oldpass = strdup("");
|
|
yppwd.domain = strdup(ypclnt->domain);
|
|
if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
|
|
(yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
|
|
(yppwd.newpw.pw_class = strdup(pwd->pw_class)) == NULL ||
|
|
(yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
|
|
(yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
|
|
(yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL) {
|
|
ypclnt_error(ypclnt, __func__, strerror(errno));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* connect to rpc.yppasswdd */
|
|
localhandle = setnetconfig();
|
|
while ((nc = getnetconfig(localhandle)) != NULL) {
|
|
if (nc->nc_protofmly != NULL &&
|
|
strcmp(nc->nc_protofmly, NC_LOOPBACK) == 0)
|
|
break;
|
|
}
|
|
if (nc == NULL) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"getnetconfig: %s", nc_sperror());
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
if ((clnt = clnt_tp_create(NULL, MASTER_YPPASSWDPROG,
|
|
MASTER_YPPASSWDVERS, nc)) == NULL) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"failed to connect to rpc.yppasswdd: %s",
|
|
clnt_spcreateerror(ypclnt->server));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
clnt->cl_auth = authunix_create_default();
|
|
|
|
/* request the update */
|
|
result = yppasswdproc_update_master_1(&yppwd, clnt);
|
|
|
|
/* check for RPC errors */
|
|
clnt_geterr(clnt, &rpcerr);
|
|
if (rpcerr.re_status != RPC_SUCCESS) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"NIS password update failed: %s",
|
|
clnt_sperror(clnt, ypclnt->server));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* check the result of the update */
|
|
if (result == NULL || *result != 0) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"NIS password update failed");
|
|
/* XXX how do we get more details? */
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
ypclnt_error(ypclnt, NULL, NULL);
|
|
ret = 0;
|
|
|
|
done:
|
|
if (clnt != NULL) {
|
|
auth_destroy(clnt->cl_auth);
|
|
clnt_destroy(clnt);
|
|
}
|
|
endnetconfig(localhandle);
|
|
free(yppwd.newpw.pw_name);
|
|
if (yppwd.newpw.pw_passwd != NULL) {
|
|
memset(yppwd.newpw.pw_passwd, 0, strlen(yppwd.newpw.pw_passwd));
|
|
free(yppwd.newpw.pw_passwd);
|
|
}
|
|
free(yppwd.newpw.pw_class);
|
|
free(yppwd.newpw.pw_gecos);
|
|
free(yppwd.newpw.pw_dir);
|
|
free(yppwd.newpw.pw_shell);
|
|
if (yppwd.oldpass != NULL) {
|
|
memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));
|
|
free(yppwd.oldpass);
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
yppasswd_remote(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
|
|
{
|
|
struct yppasswd yppwd;
|
|
struct rpc_err rpcerr;
|
|
CLIENT *clnt = NULL;
|
|
int ret, *result;
|
|
|
|
/* fill the yppasswd structure */
|
|
memset(&yppwd, 0, sizeof yppwd);
|
|
yppwd.newpw.pw_uid = pwd->pw_uid;
|
|
yppwd.newpw.pw_gid = pwd->pw_gid;
|
|
if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
|
|
(yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
|
|
(yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
|
|
(yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
|
|
(yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL ||
|
|
(yppwd.oldpass = strdup(passwd ? passwd : "")) == NULL) {
|
|
ypclnt_error(ypclnt, __func__, strerror(errno));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* connect to rpc.yppasswdd */
|
|
clnt = clnt_create(ypclnt->server, YPPASSWDPROG, YPPASSWDVERS, "udp");
|
|
if (clnt == NULL) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"failed to connect to rpc.yppasswdd: %s",
|
|
clnt_spcreateerror(ypclnt->server));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
clnt->cl_auth = authunix_create_default();
|
|
|
|
/* request the update */
|
|
result = yppasswdproc_update_1(&yppwd, clnt);
|
|
|
|
/* check for RPC errors */
|
|
clnt_geterr(clnt, &rpcerr);
|
|
if (rpcerr.re_status != RPC_SUCCESS) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"NIS password update failed: %s",
|
|
clnt_sperror(clnt, ypclnt->server));
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* check the result of the update */
|
|
if (result == NULL || *result != 0) {
|
|
ypclnt_error(ypclnt, __func__,
|
|
"NIS password update failed");
|
|
/* XXX how do we get more details? */
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
ypclnt_error(ypclnt, NULL, NULL);
|
|
ret = 0;
|
|
|
|
done:
|
|
if (clnt != NULL) {
|
|
auth_destroy(clnt->cl_auth);
|
|
clnt_destroy(clnt);
|
|
}
|
|
free(yppwd.newpw.pw_name);
|
|
if (yppwd.newpw.pw_passwd != NULL) {
|
|
memset(yppwd.newpw.pw_passwd, 0, strlen(yppwd.newpw.pw_passwd));
|
|
free(yppwd.newpw.pw_passwd);
|
|
}
|
|
free(yppwd.newpw.pw_gecos);
|
|
free(yppwd.newpw.pw_dir);
|
|
free(yppwd.newpw.pw_shell);
|
|
if (yppwd.oldpass != NULL) {
|
|
memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));
|
|
free(yppwd.oldpass);
|
|
}
|
|
return (ret);
|
|
}
|