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
40 static const char rcsid[] =
41 "$FreeBSD: src/usr.sbin/rpc.ypupdated/ypupdated_server.c,v 1.3.2.1 2002/02/15 00:46:58 des Exp $";
46 #include <rpc/auth_des.h>
47 #include <rpc/key_prot.h>
48 #include <sys/param.h>
49 #include <sys/cdefs.h>
50 #include <rpcsvc/yp.h>
51 #include "ypupdate_prot.h"
52 #include "ypupdated_extern.h"
53 #include "yp_extern.h"
54 #include "ypxfr_extern.h"
60 * Try to avoid spoofing: if a client chooses to use a very large
61 * window and then tries a bunch of randomly chosen encrypted timestamps,
62 * there's a chance he might stumble onto a valid combination.
63 * We therefore reject any RPCs with a window size larger than a preset
67 #define WINDOW (60*60)
70 static enum auth_stat yp_checkauth(svcreq)
71 struct svc_req *svcreq;
73 struct authdes_cred *des_cred;
75 switch (svcreq->rq_cred.oa_flavor) {
77 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
78 if (des_cred->adc_fullname.window > WINDOW) {
79 yp_error("warning: client-specified window size \
80 was too large -- possible spoof attempt");
87 yp_error("warning: client didn't use DES authentication");
91 yp_error("client used unknown auth flavor");
92 return(AUTH_REJECTEDCRED);
97 unsigned int *ypu_change_1_svc(args, svcreq)
98 struct ypupdate_args *args;
99 struct svc_req *svcreq;
101 struct authdes_cred *des_cred;
104 enum auth_stat astat;
108 astat = yp_checkauth(svcreq);
110 if (astat != AUTH_OK) {
111 svcerr_auth(svcreq->rq_xprt, astat);
115 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
116 netname = des_cred->adc_fullname.name;
118 res = localupdate(netname, "/etc/publickey", YPOP_CHANGE,
119 args->key.yp_buf_len, args->key.yp_buf_val,
120 args->datum.yp_buf_len, args->datum.yp_buf_val);
125 res = ypmap_update(netname, args->mapname, YPOP_CHANGE,
126 args->key.yp_buf_len, args->key.yp_buf_val,
127 args->datum.yp_buf_len, args->datum.yp_buf_val);
132 unsigned int *ypu_insert_1_svc(args, svcreq)
133 struct ypupdate_args *args;
134 struct svc_req *svcreq;
136 struct authdes_cred *des_cred;
139 enum auth_stat astat;
143 astat = yp_checkauth(svcreq);
145 if (astat != AUTH_OK) {
146 svcerr_auth(svcreq->rq_xprt, astat);
150 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
151 netname = des_cred->adc_fullname.name;
153 res = localupdate(netname, "/etc/publickey", YPOP_INSERT,
154 args->key.yp_buf_len, args->key.yp_buf_val,
155 args->datum.yp_buf_len, args->datum.yp_buf_val);
160 res = ypmap_update(netname, args->mapname, YPOP_INSERT,
161 args->key.yp_buf_len, args->key.yp_buf_val,
162 args->datum.yp_buf_len, args->datum.yp_buf_val);
167 unsigned int *ypu_delete_1_svc(args, svcreq)
168 struct ypdelete_args *args;
169 struct svc_req *svcreq;
171 struct authdes_cred *des_cred;
174 enum auth_stat astat;
178 astat = yp_checkauth(svcreq);
180 if (astat != AUTH_OK) {
181 svcerr_auth(svcreq->rq_xprt, astat);
185 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
186 netname = des_cred->adc_fullname.name;
188 res = localupdate(netname, "/etc/publickey", YPOP_DELETE,
189 args->key.yp_buf_len, args->key.yp_buf_val,
195 res = ypmap_update(netname, args->mapname, YPOP_DELETE,
196 args->key.yp_buf_len, args->key.yp_buf_val,
202 unsigned int *ypu_store_1_svc(args, svcreq)
203 struct ypupdate_args *args;
204 struct svc_req *svcreq;
206 struct authdes_cred *des_cred;
209 enum auth_stat astat;
213 astat = yp_checkauth(svcreq);
215 if (astat != AUTH_OK) {
216 svcerr_auth(svcreq->rq_xprt, astat);
220 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
221 netname = des_cred->adc_fullname.name;
223 res = localupdate(netname, "/etc/publickey", YPOP_STORE,
224 args->key.yp_buf_len, args->key.yp_buf_val,
225 args->datum.yp_buf_len, args->datum.yp_buf_val);
230 res = ypmap_update(netname, args->mapname, YPOP_STORE,
231 args->key.yp_buf_len, args->key.yp_buf_val,
232 args->datum.yp_buf_len, args->datum.yp_buf_val);