2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 * @(#)svc_generic.c 1.19 94/04/24 SMI; 1.21 89/02/28 Copyr 1988 Sun Micro
30 * $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $
31 * $FreeBSD: src/lib/libc/rpc/svc_generic.c,v 1.7 2006/02/27 22:10:59 deischen Exp $
35 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
39 * svc_generic.c, Server side for RPC.
42 #include "namespace.h"
43 #include "reentrant.h"
44 #include <sys/types.h>
45 #include <sys/socket.h>
46 #include <netinet/in.h>
48 #include <rpc/nettype.h>
55 #include "un-namespace.h"
60 extern int __svc_vc_setflag(SVCXPRT *, int);
63 * The highest level interface for server creation.
64 * It tries for all the nettokens in that particular class of token
65 * and returns the number of handles it can create and/or find.
67 * It creates a link list of all the handles it could create.
68 * If svc_create() is called multiple times, it uses the handle
69 * created earlier instead of creating a new handle every time.
72 svc_create(void (*dispatch)(struct svc_req *, SVCXPRT *),
73 rpcprog_t prognum, /* Program number */
74 rpcvers_t versnum, /* Version number */
75 const char *nettype) /* Networktype token */
78 SVCXPRT *xprt; /* Server handle */
79 struct xlist *next; /* Next item */
81 static struct xlist *xprtlist; /* A link list of all the handles */
84 struct netconfig *nconf;
87 /* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
89 if ((handle = __rpc_setconf(nettype)) == NULL) {
90 warnx("svc_create: unknown protocol");
93 while ((nconf = __rpc_getconf(handle)) != NULL) {
94 mutex_lock(&xprtlist_lock);
95 for (l = xprtlist; l; l = l->next) {
96 if (strcmp(l->xprt->xp_netid, nconf->nc_netid) == 0) {
97 /* Found an old one, use it */
98 rpcb_unset(prognum, versnum, nconf);
99 if (svc_reg(l->xprt, prognum, versnum,
100 dispatch, nconf) == FALSE)
102 "svc_create: could not register prog %u vers %u on %s",
103 (unsigned)prognum, (unsigned)versnum,
111 /* It was not found. Now create a new one */
112 xprt = svc_tp_create(dispatch, prognum, versnum, nconf);
114 l = (struct xlist *)malloc(sizeof (*l));
116 warnx("svc_create: no memory");
117 mutex_unlock(&xprtlist_lock);
126 mutex_unlock(&xprtlist_lock);
128 __rpc_endconf(handle);
130 * In case of num == 0; the error messages are generated by the
131 * underlying layers; and hence not needed here.
137 * The high level interface to svc_tli_create().
138 * It tries to create a server for "nconf" and registers the service
139 * with the rpcbind. It calls svc_tli_create();
142 svc_tp_create(void (*dispatch)(struct svc_req *, SVCXPRT *),
143 rpcprog_t prognum, /* Program number */
144 rpcvers_t versnum, /* Version number */
145 const struct netconfig *nconf) /* Netconfig structure for the network */
151 "svc_tp_create: invalid netconfig structure for prog %u vers %u",
152 (unsigned)prognum, (unsigned)versnum);
155 xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
159 /*LINTED const castaway*/
160 rpcb_unset(prognum, versnum, (struct netconfig *) nconf);
161 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
163 "svc_tp_create: Could not register prog %u vers %u on %s",
164 (unsigned)prognum, (unsigned)versnum,
173 * If fd is RPC_ANYFD, then it opens a fd for the given transport
174 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
175 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
176 * NULL bindadr and Connection oriented transports, the value of qlen
179 * If sendsz or recvsz are zero, their default values are chosen.
183 int fd, /* Connection end point */
184 const struct netconfig *nconf, /* Netconfig struct for nettoken */
185 const struct t_bind *bindaddr, /* Local bind address */
186 u_int sendsz, /* Max sendsize */
187 u_int recvsz) /* Max recvsize */
189 SVCXPRT *xprt = NULL; /* service handle */
190 bool_t madefd = FALSE; /* whether fd opened here */
191 struct __rpc_sockinfo si;
192 struct sockaddr_storage ss;
195 if (fd == RPC_ANYFD) {
197 warnx("svc_tli_create: invalid netconfig");
200 fd = __rpc_nconf2fd(nconf);
203 "svc_tli_create: could not open connection for %s",
207 __rpc_nconf2sockinfo(nconf, &si);
211 * It is an open descriptor. Get the transport info.
213 if (!__rpc_fd2sockinfo(fd, &si)) {
215 "svc_tli_create: could not get transport information");
221 * If the fd is unbound, try to bind it.
223 if (madefd || !__rpc_sockisbound(fd)) {
224 if (bindaddr == NULL) {
225 if (bindresvport(fd, NULL) < 0) {
226 memset(&ss, 0, sizeof ss);
227 ss.ss_family = si.si_af;
228 ss.ss_len = si.si_alen;
229 if (_bind(fd, (struct sockaddr *)(void *)&ss,
230 (socklen_t)si.si_alen) < 0) {
232 "svc_tli_create: could not bind to anonymous port");
236 _listen(fd, SOMAXCONN);
239 (struct sockaddr *)bindaddr->addr.buf,
240 (socklen_t)si.si_alen) < 0) {
242 "svc_tli_create: could not bind to requested address");
245 _listen(fd, (int)bindaddr->qlen);
250 * call transport specific function.
252 switch (si.si_socktype) {
255 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
257 /* accepted socket */
258 xprt = svc_fd_create(fd, sendsz, recvsz);
260 xprt = svc_vc_create(fd, sendsz, recvsz);
265 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
266 strcmp(nconf->nc_protofmly, "inet6") == 0)
267 (void) __svc_vc_setflag(xprt, TRUE);
271 xprt = svc_dg_create(fd, sendsz, recvsz);
274 warnx("svc_tli_create: bad service type");
280 * The error messages here are spitted out by the lower layers:
281 * svc_vc_create(), svc_fd_create() and svc_dg_create().
285 /* Fill in type of service */
286 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
289 xprt->xp_netid = strdup(nconf->nc_netid);
290 xprt->xp_tp = strdup(nconf->nc_device);
298 if (!madefd) /* so that svc_destroy doesnt close fd */
299 xprt->xp_fd = RPC_ANYFD;