1 /* $NetBSD: rpcb_svc.c,v 1.1 2000/06/02 23:15:41 fvdl Exp $ */
2 /* $FreeBSD: stable/10/usr.sbin/rpcbind/rpcb_svc.c 173412 2007-11-07 10:53:41Z kevlo $ */
3
4 /*
5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
6 * unrestricted use provided that this legend is included on all tape
7 * media and as a part of the software program in whole or part. Users
8 * may copy or modify Sun RPC without charge, but are not authorized
9 * to license or distribute it to anyone else except as part of a product or
10 * program developed by the user.
11 *
12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 *
16 * Sun RPC is provided with no support and without any obligation on the
17 * part of Sun Microsystems, Inc. to assist in its use, correction,
18 * modification or enhancement.
19 *
20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
22 * OR ANY PART THEREOF.
23 *
24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
25 * or profits or other special, indirect and consequential damages, even if
26 * Sun has been advised of the possibility of such damages.
27 *
28 * Sun Microsystems, Inc.
29 * 2550 Garcia Avenue
30 * Mountain View, California 94043
31 */
32 /*
33 * Copyright (c) 1986 - 1991 by Sun Microsystems, Inc.
34 */
35
36 /* #ident "@(#)rpcb_svc.c 1.16 93/07/05 SMI" */
37
38 /*
39 * rpcb_svc.c
40 * The server procedure for the version 3 rpcbind (TLI).
41 *
42 * It maintains a separate list of all the registered services with the
43 * version 3 of rpcbind.
44 */
45 #include <sys/types.h>
46 #include <rpc/rpc.h>
47 #include <rpc/rpcb_prot.h>
48 #include <netconfig.h>
49 #include <syslog.h>
50 #include <stdlib.h>
51 #include <stdio.h>
52 #include <string.h>
53
54 #include "rpcbind.h"
55
56 static void *rpcbproc_getaddr_3_local(void *, struct svc_req *, SVCXPRT *,
57 rpcvers_t);
58 static void *rpcbproc_dump_3_local(void *, struct svc_req *, SVCXPRT *,
59 rpcvers_t);
60
61 /*
62 * Called by svc_getreqset. There is a separate server handle for
63 * every transport that it waits on.
64 */
65 void
rpcb_service_3(struct svc_req * rqstp,SVCXPRT * transp)66 rpcb_service_3(struct svc_req *rqstp, SVCXPRT *transp)
67 {
68 union {
69 RPCB rpcbproc_set_3_arg;
70 RPCB rpcbproc_unset_3_arg;
71 RPCB rpcbproc_getaddr_3_local_arg;
72 struct rpcb_rmtcallargs rpcbproc_callit_3_arg;
73 char *rpcbproc_uaddr2taddr_3_arg;
74 struct netbuf rpcbproc_taddr2uaddr_3_arg;
75 } argument;
76 char *result;
77 xdrproc_t xdr_argument, xdr_result;
78 void *(*local)(void *, struct svc_req *, SVCXPRT *, rpcvers_t);
79
80 rpcbs_procinfo(RPCBVERS_3_STAT, rqstp->rq_proc);
81
82 switch (rqstp->rq_proc) {
83 case NULLPROC:
84 /*
85 * Null proc call
86 */
87 #ifdef RPCBIND_DEBUG
88 if (debugging)
89 fprintf(stderr, "RPCBPROC_NULL\n");
90 #endif
91 /* This call just logs, no actual checks */
92 check_access(transp, rqstp->rq_proc, NULL, RPCBVERS);
93 (void) svc_sendreply(transp, (xdrproc_t)xdr_void, (char *)NULL);
94 return;
95
96 case RPCBPROC_SET:
97 xdr_argument = (xdrproc_t )xdr_rpcb;
98 xdr_result = (xdrproc_t )xdr_bool;
99 local = rpcbproc_set_com;
100 break;
101
102 case RPCBPROC_UNSET:
103 xdr_argument = (xdrproc_t)xdr_rpcb;
104 xdr_result = (xdrproc_t)xdr_bool;
105 local = rpcbproc_unset_com;
106 break;
107
108 case RPCBPROC_GETADDR:
109 xdr_argument = (xdrproc_t)xdr_rpcb;
110 xdr_result = (xdrproc_t)xdr_wrapstring;
111 local = rpcbproc_getaddr_3_local;
112 break;
113
114 case RPCBPROC_DUMP:
115 #ifdef RPCBIND_DEBUG
116 if (debugging)
117 fprintf(stderr, "RPCBPROC_DUMP\n");
118 #endif
119 xdr_argument = (xdrproc_t)xdr_void;
120 xdr_result = (xdrproc_t)xdr_rpcblist_ptr;
121 local = rpcbproc_dump_3_local;
122 break;
123
124 case RPCBPROC_CALLIT:
125 rpcbproc_callit_com(rqstp, transp, rqstp->rq_proc, RPCBVERS);
126 return;
127
128 case RPCBPROC_GETTIME:
129 #ifdef RPCBIND_DEBUG
130 if (debugging)
131 fprintf(stderr, "RPCBPROC_GETTIME\n");
132 #endif
133 xdr_argument = (xdrproc_t)xdr_void;
134 xdr_result = (xdrproc_t)xdr_u_long;
135 local = rpcbproc_gettime_com;
136 break;
137
138 case RPCBPROC_UADDR2TADDR:
139 #ifdef RPCBIND_DEBUG
140 if (debugging)
141 fprintf(stderr, "RPCBPROC_UADDR2TADDR\n");
142 #endif
143 xdr_argument = (xdrproc_t)xdr_wrapstring;
144 xdr_result = (xdrproc_t)xdr_netbuf;
145 local = rpcbproc_uaddr2taddr_com;
146 break;
147
148 case RPCBPROC_TADDR2UADDR:
149 #ifdef RPCBIND_DEBUG
150 if (debugging)
151 fprintf(stderr, "RPCBPROC_TADDR2UADDR\n");
152 #endif
153 xdr_argument = (xdrproc_t)xdr_netbuf;
154 xdr_result = (xdrproc_t)xdr_wrapstring;
155 local = rpcbproc_taddr2uaddr_com;
156 break;
157
158 default:
159 svcerr_noproc(transp);
160 return;
161 }
162 (void) memset((char *)&argument, 0, sizeof (argument));
163 if (!svc_getargs(transp, (xdrproc_t) xdr_argument,
164 (char *) &argument)) {
165 svcerr_decode(transp);
166 if (debugging)
167 (void) fprintf(stderr, "rpcbind: could not decode\n");
168 return;
169 }
170 if (!check_access(transp, rqstp->rq_proc, &argument, RPCBVERS)) {
171 svcerr_weakauth(transp);
172 goto done;
173 }
174 result = (*local)(&argument, rqstp, transp, RPCBVERS);
175 if (result != NULL && !svc_sendreply(transp, (xdrproc_t)xdr_result,
176 result)) {
177 svcerr_systemerr(transp);
178 if (debugging) {
179 (void) fprintf(stderr, "rpcbind: svc_sendreply\n");
180 if (doabort) {
181 rpcbind_abort();
182 }
183 }
184 }
185 done:
186 if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, (char *)
187 &argument)) {
188 if (debugging) {
189 (void) fprintf(stderr, "unable to free arguments\n");
190 if (doabort) {
191 rpcbind_abort();
192 }
193 }
194 }
195 }
196
197 /*
198 * Lookup the mapping for a program, version and return its
199 * address. Assuming that the caller wants the address of the
200 * server running on the transport on which the request came.
201 *
202 * We also try to resolve the universal address in terms of
203 * address of the caller.
204 */
205 /* ARGSUSED */
206 static void *
rpcbproc_getaddr_3_local(void * arg,struct svc_req * rqstp __unused,SVCXPRT * transp __unused,rpcvers_t versnum __unused)207 rpcbproc_getaddr_3_local(void *arg, struct svc_req *rqstp __unused,
208 SVCXPRT *transp __unused, rpcvers_t versnum __unused)
209 {
210 RPCB *regp = (RPCB *)arg;
211 #ifdef RPCBIND_DEBUG
212 if (debugging) {
213 char *uaddr;
214
215 uaddr = taddr2uaddr(rpcbind_get_conf(transp->xp_netid),
216 svc_getrpccaller(transp));
217 fprintf(stderr, "RPCB_GETADDR req for (%lu, %lu, %s) from %s: ",
218 (unsigned long)regp->r_prog, (unsigned long)regp->r_vers,
219 regp->r_netid, uaddr);
220 free(uaddr);
221 }
222 #endif
223 return (rpcbproc_getaddr_com(regp, rqstp, transp, RPCBVERS,
224 RPCB_ALLVERS));
225 }
226
227 /* ARGSUSED */
228 static void *
rpcbproc_dump_3_local(void * arg __unused,struct svc_req * rqstp __unused,SVCXPRT * transp __unused,rpcvers_t versnum __unused)229 rpcbproc_dump_3_local(void *arg __unused, struct svc_req *rqstp __unused,
230 SVCXPRT *transp __unused, rpcvers_t versnum __unused)
231 {
232 return ((void *)&list_rbl);
233 }
234