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
38 * $FreeBSD: src/usr.sbin/rpc.ypupdated/ypupdated_server.c,v 1.3.2.1 2002/02/15 00:46:58 des Exp $
39 * $DragonFly: src/usr.sbin/rpc.ypupdated/ypupdated_server.c,v 1.2 2003/06/17 04:30:02 dillon Exp $
44 #include <rpc/auth_des.h>
45 #include <rpc/key_prot.h>
46 #include <sys/param.h>
47 #include <sys/cdefs.h>
48 #include <rpcsvc/yp.h>
49 #include "ypupdate_prot.h"
50 #include "ypupdated_extern.h"
51 #include "yp_extern.h"
52 #include "ypxfr_extern.h"
58 * Try to avoid spoofing: if a client chooses to use a very large
59 * window and then tries a bunch of randomly chosen encrypted timestamps,
60 * there's a chance he might stumble onto a valid combination.
61 * We therefore reject any RPCs with a window size larger than a preset
65 #define WINDOW (60*60)
68 static enum auth_stat yp_checkauth(svcreq)
69 struct svc_req *svcreq;
71 struct authdes_cred *des_cred;
73 switch (svcreq->rq_cred.oa_flavor) {
75 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
76 if (des_cred->adc_fullname.window > WINDOW) {
77 yp_error("warning: client-specified window size \
78 was too large -- possible spoof attempt");
85 yp_error("warning: client didn't use DES authentication");
89 yp_error("client used unknown auth flavor");
90 return(AUTH_REJECTEDCRED);
95 unsigned int *ypu_change_1_svc(args, svcreq)
96 struct ypupdate_args *args;
97 struct svc_req *svcreq;
99 struct authdes_cred *des_cred;
102 enum auth_stat astat;
106 astat = yp_checkauth(svcreq);
108 if (astat != AUTH_OK) {
109 svcerr_auth(svcreq->rq_xprt, astat);
113 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
114 netname = des_cred->adc_fullname.name;
116 res = localupdate(netname, "/etc/publickey", YPOP_CHANGE,
117 args->key.yp_buf_len, args->key.yp_buf_val,
118 args->datum.yp_buf_len, args->datum.yp_buf_val);
123 res = ypmap_update(netname, args->mapname, YPOP_CHANGE,
124 args->key.yp_buf_len, args->key.yp_buf_val,
125 args->datum.yp_buf_len, args->datum.yp_buf_val);
130 unsigned int *ypu_insert_1_svc(args, svcreq)
131 struct ypupdate_args *args;
132 struct svc_req *svcreq;
134 struct authdes_cred *des_cred;
137 enum auth_stat astat;
141 astat = yp_checkauth(svcreq);
143 if (astat != AUTH_OK) {
144 svcerr_auth(svcreq->rq_xprt, astat);
148 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
149 netname = des_cred->adc_fullname.name;
151 res = localupdate(netname, "/etc/publickey", YPOP_INSERT,
152 args->key.yp_buf_len, args->key.yp_buf_val,
153 args->datum.yp_buf_len, args->datum.yp_buf_val);
158 res = ypmap_update(netname, args->mapname, YPOP_INSERT,
159 args->key.yp_buf_len, args->key.yp_buf_val,
160 args->datum.yp_buf_len, args->datum.yp_buf_val);
165 unsigned int *ypu_delete_1_svc(args, svcreq)
166 struct ypdelete_args *args;
167 struct svc_req *svcreq;
169 struct authdes_cred *des_cred;
172 enum auth_stat astat;
176 astat = yp_checkauth(svcreq);
178 if (astat != AUTH_OK) {
179 svcerr_auth(svcreq->rq_xprt, astat);
183 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
184 netname = des_cred->adc_fullname.name;
186 res = localupdate(netname, "/etc/publickey", YPOP_DELETE,
187 args->key.yp_buf_len, args->key.yp_buf_val,
193 res = ypmap_update(netname, args->mapname, YPOP_DELETE,
194 args->key.yp_buf_len, args->key.yp_buf_val,
200 unsigned int *ypu_store_1_svc(args, svcreq)
201 struct ypupdate_args *args;
202 struct svc_req *svcreq;
204 struct authdes_cred *des_cred;
207 enum auth_stat astat;
211 astat = yp_checkauth(svcreq);
213 if (astat != AUTH_OK) {
214 svcerr_auth(svcreq->rq_xprt, astat);
218 des_cred = (struct authdes_cred *) svcreq->rq_clntcred;
219 netname = des_cred->adc_fullname.name;
221 res = localupdate(netname, "/etc/publickey", YPOP_STORE,
222 args->key.yp_buf_len, args->key.yp_buf_val,
223 args->datum.yp_buf_len, args->datum.yp_buf_val);
228 res = ypmap_update(netname, args->mapname, YPOP_STORE,
229 args->key.yp_buf_len, args->key.yp_buf_val,
230 args->datum.yp_buf_len, args->datum.yp_buf_val);