2 * Copyright (c) 1995, 1996
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * ypupdate server implementation
34 * Written by Bill Paul <wpaul@ctr.columbia.edu>
35 * Center for Telecommunications Research
36 * Columbia University, New York City
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
44 #include <rpc/key_prot.h>
45 #include <sys/param.h>
46 #include <rpcsvc/yp.h>
47 #include "ypupdate_prot.h"
48 #include "ypupdated_extern.h"
49 #include "yp_extern.h"
50 #include "ypxfr_extern.h"
56 * Try to avoid spoofing: if a client chooses to use a very large
57 * window and then tries a bunch of randomly chosen encrypted timestamps,
58 * there's a chance he might stumble onto a valid combination.
59 * We therefore reject any RPCs with a window size larger than a preset
63 #define WINDOW (60*60)
67 yp_checkauth(struct svc_req *svcreq)
69 struct authdes_cred *des_cred;
71 switch (svcreq->rq_cred.oa_flavor) {
73 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
74 if (des_cred->adc_fullname.window > WINDOW) {
75 yp_error("warning: client-specified window size \
76 was too large -- possible spoof attempt");
83 yp_error("warning: client didn't use DES authentication");
87 yp_error("client used unknown auth flavor");
88 return(AUTH_REJECTEDCRED);
94 ypu_change_1_svc(struct ypupdate_args *args, struct svc_req *svcreq)
96 struct authdes_cred *des_cred;
103 astat = yp_checkauth(svcreq);
105 if (astat != AUTH_OK) {
106 svcerr_auth(svcreq->rq_xprt, astat);
110 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
111 netname = des_cred->adc_fullname.name;
113 res = localupdate(netname, "/etc/publickey", YPOP_CHANGE,
114 args->key.yp_buf_len, args->key.yp_buf_val,
115 args->datum.yp_buf_len, args->datum.yp_buf_val);
120 res = ypmap_update(netname, args->mapname, YPOP_CHANGE,
121 args->key.yp_buf_len, args->key.yp_buf_val,
122 args->datum.yp_buf_len, args->datum.yp_buf_val);
128 ypu_insert_1_svc(struct ypupdate_args *args, struct svc_req *svcreq)
130 struct authdes_cred *des_cred;
133 enum auth_stat astat;
137 astat = yp_checkauth(svcreq);
139 if (astat != AUTH_OK) {
140 svcerr_auth(svcreq->rq_xprt, astat);
144 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
145 netname = des_cred->adc_fullname.name;
147 res = localupdate(netname, "/etc/publickey", YPOP_INSERT,
148 args->key.yp_buf_len, args->key.yp_buf_val,
149 args->datum.yp_buf_len, args->datum.yp_buf_val);
154 res = ypmap_update(netname, args->mapname, YPOP_INSERT,
155 args->key.yp_buf_len, args->key.yp_buf_val,
156 args->datum.yp_buf_len, args->datum.yp_buf_val);
162 ypu_delete_1_svc(struct ypdelete_args *args, struct svc_req *svcreq)
164 struct authdes_cred *des_cred;
167 enum auth_stat astat;
171 astat = yp_checkauth(svcreq);
173 if (astat != AUTH_OK) {
174 svcerr_auth(svcreq->rq_xprt, astat);
178 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
179 netname = des_cred->adc_fullname.name;
181 res = localupdate(netname, "/etc/publickey", YPOP_DELETE,
182 args->key.yp_buf_len, args->key.yp_buf_val,
188 res = ypmap_update(netname, args->mapname, YPOP_DELETE,
189 args->key.yp_buf_len, args->key.yp_buf_val,
196 ypu_store_1_svc(struct ypupdate_args *args, struct svc_req *svcreq)
198 struct authdes_cred *des_cred;
201 enum auth_stat astat;
205 astat = yp_checkauth(svcreq);
207 if (astat != AUTH_OK) {
208 svcerr_auth(svcreq->rq_xprt, astat);
212 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
213 netname = des_cred->adc_fullname.name;
215 res = localupdate(netname, "/etc/publickey", YPOP_STORE,
216 args->key.yp_buf_len, args->key.yp_buf_val,
217 args->datum.yp_buf_len, args->datum.yp_buf_val);
222 res = ypmap_update(netname, args->mapname, YPOP_STORE,
223 args->key.yp_buf_len, args->key.yp_buf_val,
224 args->datum.yp_buf_len, args->datum.yp_buf_val);