1 /* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
4 * Copyright (c) 2009, Sun Microsystems, Inc.
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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32 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
35 #if defined(LIBC_SCCS) && !defined(lint)
36 #ident "@(#)svc_generic.c 1.19 94/04/24 SMI"
37 static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
43 * svc_generic.c, Server side for RPC.
47 #include "namespace.h"
48 #include "reentrant.h"
49 #include <sys/types.h>
50 #include <sys/socket.h>
51 #include <netinet/in.h>
53 #include <rpc/nettype.h>
60 #include "un-namespace.h"
65 extern int __svc_vc_setflag(SVCXPRT *, int);
68 * The highest level interface for server creation.
69 * It tries for all the nettokens in that particular class of token
70 * and returns the number of handles it can create and/or find.
72 * It creates a link list of all the handles it could create.
73 * If svc_create() is called multiple times, it uses the handle
74 * created earlier instead of creating a new handle every time.
77 svc_create(dispatch, prognum, versnum, nettype)
78 void (*dispatch)(struct svc_req *, SVCXPRT *);
79 rpcprog_t prognum; /* Program number */
80 rpcvers_t versnum; /* Version number */
81 const char *nettype; /* Networktype token */
84 SVCXPRT *xprt; /* Server handle */
85 struct xlist *next; /* Next item */
87 static struct xlist *xprtlist; /* A link list of all the handles */
90 struct netconfig *nconf;
93 /* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
95 if ((handle = __rpc_setconf(nettype)) == NULL) {
96 warnx("svc_create: unknown protocol");
99 while ((nconf = __rpc_getconf(handle)) != NULL) {
100 mutex_lock(&xprtlist_lock);
101 for (l = xprtlist; l; l = l->next) {
102 if (strcmp(l->xprt->xp_netid, nconf->nc_netid) == 0) {
103 /* Found an old one, use it */
104 (void) rpcb_unset(prognum, versnum, nconf);
105 if (svc_reg(l->xprt, prognum, versnum,
106 dispatch, nconf) == FALSE)
108 "svc_create: could not register prog %u vers %u on %s",
109 (unsigned)prognum, (unsigned)versnum,
117 /* It was not found. Now create a new one */
118 xprt = svc_tp_create(dispatch, prognum, versnum, nconf);
120 l = (struct xlist *)malloc(sizeof (*l));
122 warnx("svc_create: no memory");
123 mutex_unlock(&xprtlist_lock);
132 mutex_unlock(&xprtlist_lock);
134 __rpc_endconf(handle);
136 * In case of num == 0; the error messages are generated by the
137 * underlying layers; and hence not needed here.
143 * The high level interface to svc_tli_create().
144 * It tries to create a server for "nconf" and registers the service
145 * with the rpcbind. It calls svc_tli_create();
148 svc_tp_create(dispatch, prognum, versnum, nconf)
149 void (*dispatch)(struct svc_req *, SVCXPRT *);
150 rpcprog_t prognum; /* Program number */
151 rpcvers_t versnum; /* Version number */
152 const struct netconfig *nconf; /* Netconfig structure for the network */
158 "svc_tp_create: invalid netconfig structure for prog %u vers %u",
159 (unsigned)prognum, (unsigned)versnum);
162 xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
166 /*LINTED const castaway*/
167 (void) rpcb_unset(prognum, versnum, (struct netconfig *) nconf);
168 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
170 "svc_tp_create: Could not register prog %u vers %u on %s",
171 (unsigned)prognum, (unsigned)versnum,
180 * If fd is RPC_ANYFD, then it opens a fd for the given transport
181 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
182 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
183 * NULL bindadr and Connection oriented transports, the value of qlen
186 * If sendsz or recvsz are zero, their default values are chosen.
189 svc_tli_create(fd, nconf, bindaddr, sendsz, recvsz)
190 int fd; /* Connection end point */
191 const struct netconfig *nconf; /* Netconfig struct for nettoken */
192 const struct t_bind *bindaddr; /* Local bind address */
193 u_int sendsz; /* Max sendsize */
194 u_int recvsz; /* Max recvsize */
196 SVCXPRT *xprt = NULL; /* service handle */
197 bool_t madefd = FALSE; /* whether fd opened here */
198 struct __rpc_sockinfo si;
199 struct sockaddr_storage ss;
202 if (fd == RPC_ANYFD) {
204 warnx("svc_tli_create: invalid netconfig");
207 fd = __rpc_nconf2fd(nconf);
210 "svc_tli_create: could not open connection for %s",
214 __rpc_nconf2sockinfo(nconf, &si);
218 * It is an open descriptor. Get the transport info.
220 if (!__rpc_fd2sockinfo(fd, &si)) {
222 "svc_tli_create: could not get transport information");
228 * If the fd is unbound, try to bind it.
230 if (madefd || !__rpc_sockisbound(fd)) {
231 if (bindaddr == NULL) {
232 if (bindresvport(fd, NULL) < 0) {
233 memset(&ss, 0, sizeof ss);
234 ss.ss_family = si.si_af;
235 ss.ss_len = si.si_alen;
236 if (_bind(fd, (struct sockaddr *)(void *)&ss,
237 (socklen_t)si.si_alen) < 0) {
239 "svc_tli_create: could not bind to anonymous port");
243 _listen(fd, SOMAXCONN);
246 (struct sockaddr *)bindaddr->addr.buf,
247 (socklen_t)si.si_alen) < 0) {
249 "svc_tli_create: could not bind to requested address");
252 _listen(fd, (int)bindaddr->qlen);
257 * call transport specific function.
259 switch (si.si_socktype) {
262 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
264 /* accepted socket */
265 xprt = svc_fd_create(fd, sendsz, recvsz);
267 xprt = svc_vc_create(fd, sendsz, recvsz);
272 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
273 strcmp(nconf->nc_protofmly, "inet6") == 0)
274 (void) __svc_vc_setflag(xprt, TRUE);
278 xprt = svc_dg_create(fd, sendsz, recvsz);
281 warnx("svc_tli_create: bad service type");
287 * The error messages here are spitted out by the lower layers:
288 * svc_vc_create(), svc_fd_create() and svc_dg_create().
292 /* Fill in type of service */
293 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
296 xprt->xp_netid = strdup(nconf->nc_netid);
297 xprt->xp_tp = strdup(nconf->nc_device);
305 if (!madefd) /* so that svc_destroy doesnt close fd */
306 xprt->xp_fd = RPC_ANYFD;