ypclnt_passwd.c revision 94575 
1/*-
2 * Copyright (c) 2002 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * DARPA CHATS research program.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote
19 *    products derived from this software without specific prior written
20 *    permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $FreeBSD: head/lib/libypclnt/ypclnt_passwd.c 94575 2002-04-13 06:20:02Z des $
35 */
36
37#include <err.h>
38#include <errno.h>
39#include <pwd.h>
40#include <stdlib.h>
41#include <string.h>
42
43#include <rpcsvc/ypclnt.h>
44#include <rpcsvc/yppasswd.h>
45
46#include "ypclnt.h"
47
48int
49ypclnt_passwd(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
50{
51	struct yppasswd yppwd;
52	struct rpc_err rpcerr;
53	CLIENT *clnt = NULL;
54	int ret, *result;
55
56	/* check that rpc.yppasswdd is running */
57	if (getrpcport(ypclnt->server, YPPASSWDPROG,
58		YPPASSWDPROC_UPDATE, IPPROTO_UDP) == 0) {
59		ypclnt_error(ypclnt, __func__, "no rpc.yppasswdd on server");
60		return (-1);
61	}
62
63	/* fill the yppasswd structure */
64	memset(&yppwd, 0, sizeof yppwd);
65	yppwd.newpw.pw_uid = pwd->pw_uid;
66	yppwd.newpw.pw_gid = pwd->pw_gid;
67	if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
68	    (yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
69	    (yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
70	    (yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
71	    (yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL ||
72	    (yppwd.oldpass = strdup(passwd)) == NULL) {
73		ypclnt_error(ypclnt, __func__, strerror(errno));
74		ret = -1;
75		goto done;
76	}
77
78	/* connect to rpc.yppasswdd */
79	clnt = clnt_create(ypclnt->server, YPPASSWDPROG, YPPASSWDVERS, "udp");
80	if (clnt == NULL) {
81		ypclnt_error(ypclnt, __func__,
82		    "failed to connect to rpc.yppasswdd: %s",
83		    clnt_spcreateerror(ypclnt->server));
84		ret = -1;
85		goto done;
86	}
87	clnt->cl_auth = authunix_create_default();
88
89	/* request the update */
90	result = yppasswdproc_update_1(&yppwd, clnt);
91
92	/* check for RPC errors */
93	clnt_geterr(clnt, &rpcerr);
94	if (rpcerr.re_status != RPC_SUCCESS) {
95		ypclnt_error(ypclnt, __func__,
96		    "NIS password update failed: %s",
97		    clnt_sperror(clnt, ypclnt->server));
98		ret = -1;
99		goto done;
100	}
101
102	/* check the result of the update */
103	if (result == NULL || *result != 0) {
104		ypclnt_error(ypclnt, __func__,
105		    "NIS password update failed");
106		/* XXX how do we get more details? */
107		ret = -1;
108		goto done;
109	}
110
111	ypclnt_error(ypclnt, NULL, NULL);
112	ret = 0;
113
114 done:
115	if (clnt != NULL) {
116		auth_destroy(clnt->cl_auth);
117		clnt_destroy(clnt);
118	}
119	free(yppwd.newpw.pw_name);
120	free(yppwd.newpw.pw_passwd);
121	free(yppwd.newpw.pw_gecos);
122	free(yppwd.newpw.pw_dir);
123	free(yppwd.newpw.pw_shell);
124	if (yppwd.oldpass != NULL) {
125		memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));
126		free(yppwd.oldpass);
127	}
128	return (ret);
129}
130