1 /* $NetBSD: rpcb_svc.c,v 1.1 2000/06/02 23:15:41 fvdl Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 * - Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 * - Neither the name of Sun Microsystems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * Copyright (c) 1986 - 1991 by Sun Microsystems, Inc.
34 */
35
36 /*
37 * rpcb_svc.c
38 * The server procedure for the version 3 rpcbind (TLI).
39 *
40 * It maintains a separate list of all the registered services with the
41 * version 3 of rpcbind.
42 */
43 #include <sys/types.h>
44 #include <rpc/rpc.h>
45 #include <rpc/rpcb_prot.h>
46 #include <netconfig.h>
47 #include <stdio.h>
48 #ifdef RPCBIND_DEBUG
49 #include <stdlib.h>
50 #endif
51 #include <string.h>
52
53 #include "rpcbind.h"
54
55 static void *rpcbproc_getaddr_3_local(void *, struct svc_req *, SVCXPRT *,
56 rpcvers_t);
57 static void *rpcbproc_dump_3_local(void *, struct svc_req *, SVCXPRT *,
58 rpcvers_t);
59
60 /*
61 * Called by svc_getreqset. There is a separate server handle for
62 * every transport that it waits on.
63 */
64 void
rpcb_service_3(struct svc_req * rqstp,SVCXPRT * transp)65 rpcb_service_3(struct svc_req *rqstp, SVCXPRT *transp)
66 {
67 union {
68 RPCB rpcbproc_set_3_arg;
69 RPCB rpcbproc_unset_3_arg;
70 RPCB rpcbproc_getaddr_3_local_arg;
71 struct rpcb_rmtcallargs rpcbproc_callit_3_arg;
72 char *rpcbproc_uaddr2taddr_3_arg;
73 struct netbuf rpcbproc_taddr2uaddr_3_arg;
74 } argument;
75 char *result;
76 xdrproc_t xdr_argument, xdr_result;
77 void *(*local)(void *, struct svc_req *, SVCXPRT *, rpcvers_t);
78
79 rpcbs_procinfo(RPCBVERS_3_STAT, rqstp->rq_proc);
80
81 switch (rqstp->rq_proc) {
82 case NULLPROC:
83 /*
84 * Null proc call
85 */
86 #ifdef RPCBIND_DEBUG
87 if (debugging)
88 fprintf(stderr, "RPCBPROC_NULL\n");
89 #endif
90 /* This call just logs, no actual checks */
91 check_access(transp, rqstp->rq_proc, NULL, RPCBVERS);
92 (void) svc_sendreply(transp, (xdrproc_t)xdr_void, (char *)NULL);
93 return;
94
95 case RPCBPROC_SET:
96 xdr_argument = (xdrproc_t )xdr_rpcb;
97 xdr_result = (xdrproc_t )xdr_bool;
98 local = rpcbproc_set_com;
99 break;
100
101 case RPCBPROC_UNSET:
102 xdr_argument = (xdrproc_t)xdr_rpcb;
103 xdr_result = (xdrproc_t)xdr_bool;
104 local = rpcbproc_unset_com;
105 break;
106
107 case RPCBPROC_GETADDR:
108 xdr_argument = (xdrproc_t)xdr_rpcb;
109 xdr_result = (xdrproc_t)xdr_wrapstring;
110 local = rpcbproc_getaddr_3_local;
111 break;
112
113 case RPCBPROC_DUMP:
114 #ifdef RPCBIND_DEBUG
115 if (debugging)
116 fprintf(stderr, "RPCBPROC_DUMP\n");
117 #endif
118 xdr_argument = (xdrproc_t)xdr_void;
119 xdr_result = (xdrproc_t)xdr_rpcblist_ptr;
120 local = rpcbproc_dump_3_local;
121 break;
122
123 case RPCBPROC_CALLIT:
124 rpcbproc_callit_com(rqstp, transp, rqstp->rq_proc, RPCBVERS);
125 return;
126
127 case RPCBPROC_GETTIME:
128 #ifdef RPCBIND_DEBUG
129 if (debugging)
130 fprintf(stderr, "RPCBPROC_GETTIME\n");
131 #endif
132 xdr_argument = (xdrproc_t)xdr_void;
133 xdr_result = (xdrproc_t)xdr_u_long;
134 local = rpcbproc_gettime_com;
135 break;
136
137 case RPCBPROC_UADDR2TADDR:
138 #ifdef RPCBIND_DEBUG
139 if (debugging)
140 fprintf(stderr, "RPCBPROC_UADDR2TADDR\n");
141 #endif
142 xdr_argument = (xdrproc_t)xdr_wrapstring;
143 xdr_result = (xdrproc_t)xdr_netbuf;
144 local = rpcbproc_uaddr2taddr_com;
145 break;
146
147 case RPCBPROC_TADDR2UADDR:
148 #ifdef RPCBIND_DEBUG
149 if (debugging)
150 fprintf(stderr, "RPCBPROC_TADDR2UADDR\n");
151 #endif
152 xdr_argument = (xdrproc_t)xdr_netbuf;
153 xdr_result = (xdrproc_t)xdr_wrapstring;
154 local = rpcbproc_taddr2uaddr_com;
155 break;
156
157 default:
158 svcerr_noproc(transp);
159 return;
160 }
161 (void) memset((char *)&argument, 0, sizeof (argument));
162 if (!svc_getargs(transp, (xdrproc_t) xdr_argument,
163 (char *) &argument)) {
164 svcerr_decode(transp);
165 if (debugging)
166 (void) fprintf(stderr, "rpcbind: could not decode\n");
167 return;
168 }
169 if (!check_access(transp, rqstp->rq_proc, &argument, RPCBVERS)) {
170 svcerr_weakauth(transp);
171 goto done;
172 }
173 result = (*local)(&argument, rqstp, transp, RPCBVERS);
174 if (result != NULL && !svc_sendreply(transp, (xdrproc_t)xdr_result,
175 result)) {
176 svcerr_systemerr(transp);
177 if (debugging) {
178 (void) fprintf(stderr, "rpcbind: svc_sendreply\n");
179 if (doabort) {
180 rpcbind_abort();
181 }
182 }
183 }
184 done:
185 if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, (char *)
186 &argument)) {
187 if (debugging) {
188 (void) fprintf(stderr, "unable to free arguments\n");
189 if (doabort) {
190 rpcbind_abort();
191 }
192 }
193 }
194 }
195
196 /*
197 * Lookup the mapping for a program, version and return its
198 * address. Assuming that the caller wants the address of the
199 * server running on the transport on which the request came.
200 *
201 * We also try to resolve the universal address in terms of
202 * address of the caller.
203 */
204 /* ARGSUSED */
205 static void *
rpcbproc_getaddr_3_local(void * arg,struct svc_req * rqstp __unused,SVCXPRT * transp __unused,rpcvers_t versnum __unused)206 rpcbproc_getaddr_3_local(void *arg, struct svc_req *rqstp __unused,
207 SVCXPRT *transp __unused, rpcvers_t versnum __unused)
208 {
209 RPCB *regp = (RPCB *)arg;
210 #ifdef RPCBIND_DEBUG
211 if (debugging) {
212 char *uaddr;
213
214 uaddr = taddr2uaddr(rpcbind_get_conf(transp->xp_netid),
215 svc_getrpccaller(transp));
216 fprintf(stderr, "RPCB_GETADDR req for (%lu, %lu, %s) from %s: ",
217 (unsigned long)regp->r_prog, (unsigned long)regp->r_vers,
218 regp->r_netid, uaddr);
219 free(uaddr);
220 }
221 #endif
222 return (rpcbproc_getaddr_com(regp, rqstp, transp, RPCBVERS,
223 RPCB_ALLVERS));
224 }
225
226 /* ARGSUSED */
227 static void *
rpcbproc_dump_3_local(void * arg __unused,struct svc_req * rqstp __unused,SVCXPRT * transp __unused,rpcvers_t versnum __unused)228 rpcbproc_dump_3_local(void *arg __unused, struct svc_req *rqstp __unused,
229 SVCXPRT *transp __unused, rpcvers_t versnum __unused)
230 {
231 return ((void *)&list_rbl);
232 }
233