1 /* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright (c) 2009, Sun Microsystems, Inc.
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.
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
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29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
34 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
37 #if defined(LIBC_SCCS) && !defined(lint)
38 #ident "@(#)svc_generic.c 1.19 94/04/24 SMI"
39 static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
45 * svc_generic.c, Server side for RPC.
49 #include "namespace.h"
50 #include "reentrant.h"
51 #include <sys/types.h>
52 #include <sys/socket.h>
53 #include <netinet/in.h>
55 #include <rpc/nettype.h>
62 #include "un-namespace.h"
67 extern int __svc_vc_setflag(SVCXPRT *, int);
70 * The highest level interface for server creation.
71 * It tries for all the nettokens in that particular class of token
72 * and returns the number of handles it can create and/or find.
74 * It creates a link list of all the handles it could create.
75 * If svc_create() is called multiple times, it uses the handle
76 * created earlier instead of creating a new handle every time.
78 * prognum - Program number
79 * versnum - Version number
80 * nettype - Networktype token
83 svc_create(void (*dispatch)(struct svc_req *, SVCXPRT *),
84 rpcprog_t prognum, rpcvers_t versnum, const char *nettype)
87 SVCXPRT *xprt; /* Server handle */
88 struct xlist *next; /* Next item */
90 static struct xlist *xprtlist; /* A link list of all the handles */
93 struct netconfig *nconf;
96 /* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
98 if ((handle = __rpc_setconf(nettype)) == NULL) {
99 warnx("svc_create: unknown protocol");
102 while ((nconf = __rpc_getconf(handle)) != NULL) {
103 mutex_lock(&xprtlist_lock);
104 for (l = xprtlist; l; l = l->next) {
105 if (strcmp(l->xprt->xp_netid, nconf->nc_netid) == 0) {
106 /* Found an old one, use it */
107 (void) rpcb_unset(prognum, versnum, nconf);
108 if (svc_reg(l->xprt, prognum, versnum,
109 dispatch, nconf) == FALSE)
111 "svc_create: could not register prog %u vers %u on %s",
112 (unsigned)prognum, (unsigned)versnum,
120 /* It was not found. Now create a new one */
121 xprt = svc_tp_create(dispatch, prognum, versnum, nconf);
123 l = (struct xlist *)malloc(sizeof (*l));
125 warnx("svc_create: no memory");
126 mutex_unlock(&xprtlist_lock);
136 mutex_unlock(&xprtlist_lock);
139 __rpc_endconf(handle);
141 * In case of num == 0; the error messages are generated by the
142 * underlying layers; and hence not needed here.
148 * The high level interface to svc_tli_create().
149 * It tries to create a server for "nconf" and registers the service
150 * with the rpcbind. It calls svc_tli_create();
152 * prognum - Program number
153 * versnum - Version number
154 * ncofn - Netconfig structure for the network
157 svc_tp_create(void (*dispatch)(struct svc_req *, SVCXPRT *),
158 rpcprog_t prognum, rpcvers_t versnum, const struct netconfig *nconf)
164 "svc_tp_create: invalid netconfig structure for prog %u vers %u",
165 (unsigned)prognum, (unsigned)versnum);
168 xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
172 /*LINTED const castaway*/
173 (void) rpcb_unset(prognum, versnum, (struct netconfig *) nconf);
174 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
176 "svc_tp_create: Could not register prog %u vers %u on %s",
177 (unsigned)prognum, (unsigned)versnum,
186 * If fd is RPC_ANYFD, then it opens a fd for the given transport
187 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
188 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
189 * NULL bindadr and Connection oriented transports, the value of qlen
192 * If sendsz or recvsz are zero, their default values are chosen.
194 * fd - Connection end point
195 * nconf - Netconfig struct for nettoken
196 * bindaddr - Local bind address
197 * sendsz - Max sendsize
198 * recvxz - Max recvsize
201 svc_tli_create(int fd, const struct netconfig *nconf,
202 const struct t_bind *bindaddr, u_int sendsz, u_int recvsz)
204 SVCXPRT *xprt = NULL; /* service handle */
205 bool_t madefd = FALSE; /* whether fd opened here */
206 struct __rpc_sockinfo si;
207 struct sockaddr_storage ss;
210 if (fd == RPC_ANYFD) {
212 warnx("svc_tli_create: invalid netconfig");
215 fd = __rpc_nconf2fd(nconf);
218 "svc_tli_create: could not open connection for %s",
222 __rpc_nconf2sockinfo(nconf, &si);
226 * It is an open descriptor. Get the transport info.
228 if (!__rpc_fd2sockinfo(fd, &si)) {
230 "svc_tli_create: could not get transport information");
236 * If the fd is unbound, try to bind it.
238 if (madefd || !__rpc_sockisbound(fd)) {
239 if (bindaddr == NULL) {
240 if (bindresvport(fd, NULL) < 0) {
241 memset(&ss, 0, sizeof ss);
242 ss.ss_family = si.si_af;
243 ss.ss_len = si.si_alen;
244 if (_bind(fd, (struct sockaddr *)(void *)&ss,
245 (socklen_t)si.si_alen) < 0) {
247 "svc_tli_create: could not bind to anonymous port");
251 _listen(fd, SOMAXCONN);
254 (struct sockaddr *)bindaddr->addr.buf,
255 (socklen_t)si.si_alen) < 0) {
257 "svc_tli_create: could not bind to requested address");
260 _listen(fd, (int)bindaddr->qlen);
265 * call transport specific function.
267 switch (si.si_socktype) {
270 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
272 /* accepted socket */
273 xprt = svc_fd_create(fd, sendsz, recvsz);
275 xprt = svc_vc_create(fd, sendsz, recvsz);
280 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
281 strcmp(nconf->nc_protofmly, "inet6") == 0)
282 (void) __svc_vc_setflag(xprt, TRUE);
286 xprt = svc_dg_create(fd, sendsz, recvsz);
289 warnx("svc_tli_create: bad service type");
295 * The error messages here are spitted out by the lower layers:
296 * svc_vc_create(), svc_fd_create() and svc_dg_create().
300 /* Fill in type of service */
301 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
304 xprt->xp_netid = strdup(nconf->nc_netid);
305 xprt->xp_tp = strdup(nconf->nc_device);
313 if (!madefd) /* so that svc_destroy doesnt close fd */
314 xprt->xp_fd = RPC_ANYFD;