1/* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
2/* $FreeBSD: head/lib/libc/rpc/svc_generic.c 92905 2002-03-21 22:49:10Z obrien $ */
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/*
34 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
35 */
36
37/* #ident "@(#)svc_generic.c 1.19 94/04/24 SMI" */
38
39#if 0
40#if !defined(lint) && defined(SCCSIDS)
41static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
42#endif
43#endif
44
45/*
46 * svc_generic.c, Server side for RPC.
47 *
48 */
49
50#include "namespace.h"
51#include "reentrant.h"
52#include <sys/types.h>
53#include <sys/socket.h>
54#include <netinet/in.h>
55#include <rpc/rpc.h>
56#include <rpc/nettype.h>
57#include <stdio.h>
58#include <errno.h>
59#include <stdlib.h>
60#include <string.h>
61#include <unistd.h>
62#include <err.h>
63#include "un-namespace.h"
64
65#include "rpc_com.h"
66
67extern int __svc_vc_setflag(SVCXPRT *, int);
68
69/*
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.
73 *
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.
77 */
78int
79svc_create(dispatch, prognum, versnum, nettype)
80 void (*dispatch)(struct svc_req *, SVCXPRT *);
81 rpcprog_t prognum; /* Program number */
82 rpcvers_t versnum; /* Version number */
83 const char *nettype; /* Networktype token */
84{
85 struct xlist {
86 SVCXPRT *xprt; /* Server handle */
87 struct xlist *next; /* Next item */
88 } *l;
89 static struct xlist *xprtlist; /* A link list of all the handles */
90 int num = 0;
91 SVCXPRT *xprt;
92 struct netconfig *nconf;
93 void *handle;
94 extern mutex_t xprtlist_lock;
95
96/* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
97
98 if ((handle = __rpc_setconf(nettype)) == NULL) {
99 warnx("svc_create: unknown protocol");
100 return (0);
101 }
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)
110 warnx(
111 "svc_create: could not register prog %u vers %u on %s",
112 (unsigned)prognum, (unsigned)versnum,
113 nconf->nc_netid);
114 else
115 num++;
116 break;
117 }
118 }
119 if (l == NULL) {
120 /* It was not found. Now create a new one */
121 xprt = svc_tp_create(dispatch, prognum, versnum, nconf);
122 if (xprt) {
123 l = (struct xlist *)malloc(sizeof (*l));
124 if (l == NULL) {
125 warnx("svc_create: no memory");
126 mutex_unlock(&xprtlist_lock);
127 return (0);
128 }
129 l->xprt = xprt;
130 l->next = xprtlist;
131 xprtlist = l;
132 num++;
133 }
134 }
135 mutex_unlock(&xprtlist_lock);
136 }
137 __rpc_endconf(handle);
138 /*
139 * In case of num == 0; the error messages are generated by the
140 * underlying layers; and hence not needed here.
141 */
142 return (num);
143}
144
145/*
146 * The high level interface to svc_tli_create().
147 * It tries to create a server for "nconf" and registers the service
148 * with the rpcbind. It calls svc_tli_create();
149 */
150SVCXPRT *
151svc_tp_create(dispatch, prognum, versnum, nconf)
152 void (*dispatch)(struct svc_req *, SVCXPRT *);
153 rpcprog_t prognum; /* Program number */
154 rpcvers_t versnum; /* Version number */
155 const struct netconfig *nconf; /* Netconfig structure for the network */
156{
157 SVCXPRT *xprt;
158
159 if (nconf == NULL) {
160 warnx(
161 "svc_tp_create: invalid netconfig structure for prog %u vers %u",
162 (unsigned)prognum, (unsigned)versnum);
163 return (NULL);
164 }
165 xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
166 if (xprt == NULL) {
167 return (NULL);
168 }
169 /*LINTED const castaway*/
170 (void) rpcb_unset(prognum, versnum, (struct netconfig *) nconf);
171 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
172 warnx(
173 "svc_tp_create: Could not register prog %u vers %u on %s",
174 (unsigned)prognum, (unsigned)versnum,
175 nconf->nc_netid);
176 SVC_DESTROY(xprt);
177 return (NULL);
178 }
179 return (xprt);
180}
181
182/*
183 * If fd is RPC_ANYFD, then it opens a fd for the given transport
184 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
185 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
186 * NULL bindadr and Connection oriented transports, the value of qlen
187 * is set to 8.
188 *
189 * If sendsz or recvsz are zero, their default values are chosen.
190 */
191SVCXPRT *
192svc_tli_create(fd, nconf, bindaddr, sendsz, recvsz)
193 int fd; /* Connection end point */
194 const struct netconfig *nconf; /* Netconfig struct for nettoken */
195 const struct t_bind *bindaddr; /* Local bind address */
196 u_int sendsz; /* Max sendsize */
197 u_int recvsz; /* Max recvsize */
198{
199 SVCXPRT *xprt = NULL; /* service handle */
200 bool_t madefd = FALSE; /* whether fd opened here */
201 struct __rpc_sockinfo si;
202 struct sockaddr_storage ss;
203 socklen_t slen;
204
205 if (fd == RPC_ANYFD) {
206 if (nconf == NULL) {
207 warnx("svc_tli_create: invalid netconfig");
208 return (NULL);
209 }
210 fd = __rpc_nconf2fd(nconf);
211 if (fd == -1) {
212 warnx(
213 "svc_tli_create: could not open connection for %s",
214 nconf->nc_netid);
215 return (NULL);
216 }
217 __rpc_nconf2sockinfo(nconf, &si);
218 madefd = TRUE;
219 } else {
220 /*
221 * It is an open descriptor. Get the transport info.
222 */
223 if (!__rpc_fd2sockinfo(fd, &si)) {
224 warnx(
225 "svc_tli_create: could not get transport information");
226 return (NULL);
227 }
228 }
229
230 /*
231 * If the fd is unbound, try to bind it.
232 */
233 if (madefd || !__rpc_sockisbound(fd)) {
234 if (bindaddr == NULL) {
235 if (bindresvport(fd, NULL) < 0) {
236 memset(&ss, 0, sizeof ss);
237 ss.ss_family = si.si_af;
238 ss.ss_len = si.si_alen;
239 if (_bind(fd, (struct sockaddr *)(void *)&ss,
240 (socklen_t)si.si_alen) < 0) {
241 warnx(
242 "svc_tli_create: could not bind to anonymous port");
243 goto freedata;
244 }
245 }
246 _listen(fd, SOMAXCONN);
247 } else {
248 if (_bind(fd,
249 (struct sockaddr *)(void *)&bindaddr->addr.buf,
250 (socklen_t)si.si_alen) < 0) {
251 warnx(
252 "svc_tli_create: could not bind to requested address");
253 goto freedata;
254 }
255 _listen(fd, (int)bindaddr->qlen);
256 }
257
258 }
259 /*
260 * call transport specific function.
261 */
262 switch (si.si_socktype) {
263 case SOCK_STREAM:
264 slen = sizeof ss;
265 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
266 == 0) {
267 /* accepted socket */
268 xprt = svc_fd_create(fd, sendsz, recvsz);
269 } else
270 xprt = svc_vc_create(fd, sendsz, recvsz);
271 if (!nconf || !xprt)
272 break;
273#if 0
274 /* XXX fvdl */
275 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
276 strcmp(nconf->nc_protofmly, "inet6") == 0)
277 (void) __svc_vc_setflag(xprt, TRUE);
278#endif
279 break;
280 case SOCK_DGRAM:
281 xprt = svc_dg_create(fd, sendsz, recvsz);
282 break;
283 default:
284 warnx("svc_tli_create: bad service type");
285 goto freedata;
286 }
287
288 if (xprt == NULL)
289 /*
290 * The error messages here are spitted out by the lower layers:
291 * svc_vc_create(), svc_fd_create() and svc_dg_create().
292 */
293 goto freedata;
294
295 /* Fill in type of service */
296 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
297
298 if (nconf) {
299 xprt->xp_netid = strdup(nconf->nc_netid);
300 xprt->xp_tp = strdup(nconf->nc_device);
301 }
302 return (xprt);
303
304freedata:
305 if (madefd)
306 (void)_close(fd);
307 if (xprt) {
308 if (!madefd) /* so that svc_destroy doesnt close fd */
309 xprt->xp_fd = RPC_ANYFD;
310 SVC_DESTROY(xprt);
311 }
312 return (NULL);
313}
2/* $FreeBSD: head/lib/libc/rpc/svc_generic.c 92905 2002-03-21 22:49:10Z obrien $ */
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/*
34 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
35 */
36
37/* #ident "@(#)svc_generic.c 1.19 94/04/24 SMI" */
38
39#if 0
40#if !defined(lint) && defined(SCCSIDS)
41static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
42#endif
43#endif
44
45/*
46 * svc_generic.c, Server side for RPC.
47 *
48 */
49
50#include "namespace.h"
51#include "reentrant.h"
52#include <sys/types.h>
53#include <sys/socket.h>
54#include <netinet/in.h>
55#include <rpc/rpc.h>
56#include <rpc/nettype.h>
57#include <stdio.h>
58#include <errno.h>
59#include <stdlib.h>
60#include <string.h>
61#include <unistd.h>
62#include <err.h>
63#include "un-namespace.h"
64
65#include "rpc_com.h"
66
67extern int __svc_vc_setflag(SVCXPRT *, int);
68
69/*
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.
73 *
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.
77 */
78int
79svc_create(dispatch, prognum, versnum, nettype)
80 void (*dispatch)(struct svc_req *, SVCXPRT *);
81 rpcprog_t prognum; /* Program number */
82 rpcvers_t versnum; /* Version number */
83 const char *nettype; /* Networktype token */
84{
85 struct xlist {
86 SVCXPRT *xprt; /* Server handle */
87 struct xlist *next; /* Next item */
88 } *l;
89 static struct xlist *xprtlist; /* A link list of all the handles */
90 int num = 0;
91 SVCXPRT *xprt;
92 struct netconfig *nconf;
93 void *handle;
94 extern mutex_t xprtlist_lock;
95
96/* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
97
98 if ((handle = __rpc_setconf(nettype)) == NULL) {
99 warnx("svc_create: unknown protocol");
100 return (0);
101 }
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)
110 warnx(
111 "svc_create: could not register prog %u vers %u on %s",
112 (unsigned)prognum, (unsigned)versnum,
113 nconf->nc_netid);
114 else
115 num++;
116 break;
117 }
118 }
119 if (l == NULL) {
120 /* It was not found. Now create a new one */
121 xprt = svc_tp_create(dispatch, prognum, versnum, nconf);
122 if (xprt) {
123 l = (struct xlist *)malloc(sizeof (*l));
124 if (l == NULL) {
125 warnx("svc_create: no memory");
126 mutex_unlock(&xprtlist_lock);
127 return (0);
128 }
129 l->xprt = xprt;
130 l->next = xprtlist;
131 xprtlist = l;
132 num++;
133 }
134 }
135 mutex_unlock(&xprtlist_lock);
136 }
137 __rpc_endconf(handle);
138 /*
139 * In case of num == 0; the error messages are generated by the
140 * underlying layers; and hence not needed here.
141 */
142 return (num);
143}
144
145/*
146 * The high level interface to svc_tli_create().
147 * It tries to create a server for "nconf" and registers the service
148 * with the rpcbind. It calls svc_tli_create();
149 */
150SVCXPRT *
151svc_tp_create(dispatch, prognum, versnum, nconf)
152 void (*dispatch)(struct svc_req *, SVCXPRT *);
153 rpcprog_t prognum; /* Program number */
154 rpcvers_t versnum; /* Version number */
155 const struct netconfig *nconf; /* Netconfig structure for the network */
156{
157 SVCXPRT *xprt;
158
159 if (nconf == NULL) {
160 warnx(
161 "svc_tp_create: invalid netconfig structure for prog %u vers %u",
162 (unsigned)prognum, (unsigned)versnum);
163 return (NULL);
164 }
165 xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
166 if (xprt == NULL) {
167 return (NULL);
168 }
169 /*LINTED const castaway*/
170 (void) rpcb_unset(prognum, versnum, (struct netconfig *) nconf);
171 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
172 warnx(
173 "svc_tp_create: Could not register prog %u vers %u on %s",
174 (unsigned)prognum, (unsigned)versnum,
175 nconf->nc_netid);
176 SVC_DESTROY(xprt);
177 return (NULL);
178 }
179 return (xprt);
180}
181
182/*
183 * If fd is RPC_ANYFD, then it opens a fd for the given transport
184 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
185 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
186 * NULL bindadr and Connection oriented transports, the value of qlen
187 * is set to 8.
188 *
189 * If sendsz or recvsz are zero, their default values are chosen.
190 */
191SVCXPRT *
192svc_tli_create(fd, nconf, bindaddr, sendsz, recvsz)
193 int fd; /* Connection end point */
194 const struct netconfig *nconf; /* Netconfig struct for nettoken */
195 const struct t_bind *bindaddr; /* Local bind address */
196 u_int sendsz; /* Max sendsize */
197 u_int recvsz; /* Max recvsize */
198{
199 SVCXPRT *xprt = NULL; /* service handle */
200 bool_t madefd = FALSE; /* whether fd opened here */
201 struct __rpc_sockinfo si;
202 struct sockaddr_storage ss;
203 socklen_t slen;
204
205 if (fd == RPC_ANYFD) {
206 if (nconf == NULL) {
207 warnx("svc_tli_create: invalid netconfig");
208 return (NULL);
209 }
210 fd = __rpc_nconf2fd(nconf);
211 if (fd == -1) {
212 warnx(
213 "svc_tli_create: could not open connection for %s",
214 nconf->nc_netid);
215 return (NULL);
216 }
217 __rpc_nconf2sockinfo(nconf, &si);
218 madefd = TRUE;
219 } else {
220 /*
221 * It is an open descriptor. Get the transport info.
222 */
223 if (!__rpc_fd2sockinfo(fd, &si)) {
224 warnx(
225 "svc_tli_create: could not get transport information");
226 return (NULL);
227 }
228 }
229
230 /*
231 * If the fd is unbound, try to bind it.
232 */
233 if (madefd || !__rpc_sockisbound(fd)) {
234 if (bindaddr == NULL) {
235 if (bindresvport(fd, NULL) < 0) {
236 memset(&ss, 0, sizeof ss);
237 ss.ss_family = si.si_af;
238 ss.ss_len = si.si_alen;
239 if (_bind(fd, (struct sockaddr *)(void *)&ss,
240 (socklen_t)si.si_alen) < 0) {
241 warnx(
242 "svc_tli_create: could not bind to anonymous port");
243 goto freedata;
244 }
245 }
246 _listen(fd, SOMAXCONN);
247 } else {
248 if (_bind(fd,
249 (struct sockaddr *)(void *)&bindaddr->addr.buf,
250 (socklen_t)si.si_alen) < 0) {
251 warnx(
252 "svc_tli_create: could not bind to requested address");
253 goto freedata;
254 }
255 _listen(fd, (int)bindaddr->qlen);
256 }
257
258 }
259 /*
260 * call transport specific function.
261 */
262 switch (si.si_socktype) {
263 case SOCK_STREAM:
264 slen = sizeof ss;
265 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
266 == 0) {
267 /* accepted socket */
268 xprt = svc_fd_create(fd, sendsz, recvsz);
269 } else
270 xprt = svc_vc_create(fd, sendsz, recvsz);
271 if (!nconf || !xprt)
272 break;
273#if 0
274 /* XXX fvdl */
275 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
276 strcmp(nconf->nc_protofmly, "inet6") == 0)
277 (void) __svc_vc_setflag(xprt, TRUE);
278#endif
279 break;
280 case SOCK_DGRAM:
281 xprt = svc_dg_create(fd, sendsz, recvsz);
282 break;
283 default:
284 warnx("svc_tli_create: bad service type");
285 goto freedata;
286 }
287
288 if (xprt == NULL)
289 /*
290 * The error messages here are spitted out by the lower layers:
291 * svc_vc_create(), svc_fd_create() and svc_dg_create().
292 */
293 goto freedata;
294
295 /* Fill in type of service */
296 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
297
298 if (nconf) {
299 xprt->xp_netid = strdup(nconf->nc_netid);
300 xprt->xp_tp = strdup(nconf->nc_device);
301 }
302 return (xprt);
303
304freedata:
305 if (madefd)
306 (void)_close(fd);
307 if (xprt) {
308 if (!madefd) /* so that svc_destroy doesnt close fd */
309 xprt->xp_fd = RPC_ANYFD;
310 SVC_DESTROY(xprt);
311 }
312 return (NULL);
313}