2 * Copyright (c) 2002 Networks Associates Technology, Inc.
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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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
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
37 #include <sys/types.h>
38 #include <sys/socket.h>
39 #include <netinet/in.h>
43 #include <netconfig.h>
50 #include <rpcsvc/ypclnt.h>
51 #include <rpcsvc/yppasswd.h>
54 #include "yppasswd_private.h"
56 static int yppasswd_remote(ypclnt_t *, const struct passwd *, const char *);
57 static int yppasswd_local(ypclnt_t *, const struct passwd *, const char *);
60 * Determines the availability of rpc.yppasswdd. Returns -1 for not
61 * available (or unable to determine), 0 for available, 1 for available in
65 ypclnt_havepasswdd(ypclnt_t *ypclnt)
67 struct addrinfo hints, *res;
70 /* check that rpc.yppasswdd is running */
71 if (getrpcport(ypclnt->server, YPPASSWDPROG,
72 YPPASSWDPROC_UPDATE, IPPROTO_UDP) == 0) {
73 ypclnt_error(ypclnt, __func__, "no rpc.yppasswdd on server");
77 /* if we're not root, use remote method */
81 /* try to determine if we are the server */
82 memset(&hints, 0, sizeof(hints));
83 hints.ai_family = AF_UNSPEC;
84 hints.ai_socktype = SOCK_STREAM;
85 hints.ai_protocol = 0;
86 if (getaddrinfo(ypclnt->server, NULL, &hints, &res) != 0)
88 sd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
93 if (bind(sd, res->ai_addr, res->ai_addrlen) == -1) {
104 * Updates the NIS user information for the specified user.
107 ypclnt_passwd(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
109 switch (ypclnt_havepasswdd(ypclnt)) {
111 YPCLNT_DEBUG("using remote update method");
112 return (yppasswd_remote(ypclnt, pwd, passwd));
114 YPCLNT_DEBUG("using local update method");
115 return (yppasswd_local(ypclnt, pwd, passwd));
117 YPCLNT_DEBUG("no rpc.yppasswdd");
123 * yppasswd_remote and yppasswd_local are quite similar but still
124 * sufficiently different that merging them into one makes the code
125 * significantly less readable, IMHO, so we keep them separate.
129 yppasswd_local(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
131 struct master_yppasswd yppwd;
132 struct rpc_err rpcerr;
133 struct netconfig *nc = NULL;
137 /* fill the master_yppasswd structure */
138 memset(&yppwd, 0, sizeof yppwd);
139 yppwd.newpw.pw_uid = pwd->pw_uid;
140 yppwd.newpw.pw_gid = pwd->pw_gid;
141 yppwd.newpw.pw_change = pwd->pw_change;
142 yppwd.newpw.pw_expire = pwd->pw_expire;
143 yppwd.newpw.pw_fields = pwd->pw_fields;
144 if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
145 (yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
146 (yppwd.newpw.pw_class = strdup(pwd->pw_class)) == NULL ||
147 (yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
148 (yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
149 (yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL ||
150 (yppwd.oldpass = strdup(passwd ? passwd : "")) == NULL) {
151 ypclnt_error(ypclnt, __func__, strerror(errno));
156 /* connect to rpc.yppasswdd */
157 nc = getnetconfigent("unix");
158 clnt = clnt_tp_create(ypclnt->server, YPPASSWDPROG, YPPASSWDVERS, nc);
160 ypclnt_error(ypclnt, __func__,
161 "failed to connect to rpc.yppasswdd: %s",
162 clnt_spcreateerror(ypclnt->server));
166 clnt->cl_auth = authunix_create_default();
168 /* request the update */
169 result = yppasswdproc_update_master_1(&yppwd, clnt);
171 /* check for RPC errors */
172 clnt_geterr(clnt, &rpcerr);
173 if (rpcerr.re_status != RPC_SUCCESS) {
174 ypclnt_error(ypclnt, __func__,
175 "NIS password update failed: %s",
176 clnt_sperror(clnt, ypclnt->server));
181 /* check the result of the update */
182 if (result == NULL || *result != 0) {
183 ypclnt_error(ypclnt, __func__,
184 "NIS password update failed");
185 /* XXX how do we get more details? */
190 ypclnt_error(ypclnt, NULL, NULL);
195 auth_destroy(clnt->cl_auth);
199 freenetconfigent(nc);
200 free(yppwd.newpw.pw_name);
201 if (yppwd.newpw.pw_passwd != NULL) {
202 memset(yppwd.newpw.pw_passwd, 0, strlen(yppwd.newpw.pw_passwd));
203 free(yppwd.newpw.pw_passwd);
205 free(yppwd.newpw.pw_class);
206 free(yppwd.newpw.pw_gecos);
207 free(yppwd.newpw.pw_dir);
208 free(yppwd.newpw.pw_shell);
209 if (yppwd.oldpass != NULL) {
210 memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));
217 yppasswd_remote(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
219 struct yppasswd yppwd;
220 struct rpc_err rpcerr;
224 /* fill the yppasswd structure */
225 memset(&yppwd, 0, sizeof yppwd);
226 yppwd.newpw.pw_uid = pwd->pw_uid;
227 yppwd.newpw.pw_gid = pwd->pw_gid;
228 if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
229 (yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
230 (yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
231 (yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
232 (yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL ||
233 (yppwd.oldpass = strdup(passwd ? passwd : "")) == NULL) {
234 ypclnt_error(ypclnt, __func__, strerror(errno));
239 /* connect to rpc.yppasswdd */
240 clnt = clnt_create(ypclnt->server, YPPASSWDPROG, YPPASSWDVERS, "udp");
242 ypclnt_error(ypclnt, __func__,
243 "failed to connect to rpc.yppasswdd: %s",
244 clnt_spcreateerror(ypclnt->server));
248 clnt->cl_auth = authunix_create_default();
250 /* request the update */
251 result = yppasswdproc_update_1(&yppwd, clnt);
253 /* check for RPC errors */
254 clnt_geterr(clnt, &rpcerr);
255 if (rpcerr.re_status != RPC_SUCCESS) {
256 ypclnt_error(ypclnt, __func__,
257 "NIS password update failed: %s",
258 clnt_sperror(clnt, ypclnt->server));
263 /* check the result of the update */
264 if (result == NULL || *result != 0) {
265 ypclnt_error(ypclnt, __func__,
266 "NIS password update failed");
267 /* XXX how do we get more details? */
272 ypclnt_error(ypclnt, NULL, NULL);
277 auth_destroy(clnt->cl_auth);
280 free(yppwd.newpw.pw_name);
281 if (yppwd.newpw.pw_passwd != NULL) {
282 memset(yppwd.newpw.pw_passwd, 0, strlen(yppwd.newpw.pw_passwd));
283 free(yppwd.newpw.pw_passwd);
285 free(yppwd.newpw.pw_gecos);
286 free(yppwd.newpw.pw_dir);
287 free(yppwd.newpw.pw_shell);
288 if (yppwd.oldpass != NULL) {
289 memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));