FreeBSD/Linux Kernel Cross Reference
sys/rpc/rpcb_clnt.c
1 /* $NetBSD: rpcb_clnt.c,v 1.6 2000/07/16 06:41:43 itojun Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2010, Oracle America, Inc.
7 * All rights reserved.
8 *
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 the "Oracle America, 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.
19 *
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
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
34 */
35
36 /* #ident "@(#)rpcb_clnt.c 1.27 94/04/24 SMI" */
37
38
39 #if defined(LIBC_SCCS) && !defined(lint)
40 static char sccsid[] = "@(#)rpcb_clnt.c 1.30 89/06/21 Copyr 1988 Sun Micro";
41 #endif
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
44
45 /*
46 * rpcb_clnt.c
47 * interface to rpcbind rpc service.
48 *
49 * Copyright (C) 1988, Sun Microsystems, Inc.
50 */
51
52 #include "opt_inet6.h"
53
54 #include <sys/param.h>
55 #include <sys/systm.h>
56 #include <sys/kernel.h>
57 #include <sys/malloc.h>
58 #include <sys/proc.h>
59 #include <sys/socket.h>
60 #include <sys/socketvar.h>
61
62 #include <rpc/rpc.h>
63 #include <rpc/rpcb_clnt.h>
64 #include <rpc/rpcb_prot.h>
65
66 #include <rpc/rpc_com.h>
67
68 static struct timeval tottimeout = { 60, 0 };
69 static const char nullstring[] = "\000";
70
71 static CLIENT *local_rpcb(void);
72
73 #if 0
74
75 static const struct timeval rmttimeout = { 3, 0 };
76 static struct timeval rpcbrmttime = { 15, 0 };
77
78 #define CACHESIZE 6
79
80 struct address_cache {
81 char *ac_host;
82 char *ac_netid;
83 char *ac_uaddr;
84 struct netbuf *ac_taddr;
85 struct address_cache *ac_next;
86 };
87
88 static struct address_cache *front;
89 static int cachesize;
90
91 #define CLCR_GET_RPCB_TIMEOUT 1
92 #define CLCR_SET_RPCB_TIMEOUT 2
93
94
95 extern int __rpc_lowvers;
96
97 static struct address_cache *check_cache(const char *, const char *);
98 static void delete_cache(struct netbuf *);
99 static void add_cache(const char *, const char *, struct netbuf *, char *);
100 static CLIENT *getclnthandle(const char *, const struct netconfig *, char **);
101 static CLIENT *local_rpcb(void);
102 static struct netbuf *got_entry(rpcb_entry_list_ptr, const struct netconfig *);
103
104 /*
105 * This routine adjusts the timeout used for calls to the remote rpcbind.
106 * Also, this routine can be used to set the use of portmapper version 2
107 * only when doing rpc_broadcasts
108 * These are private routines that may not be provided in future releases.
109 */
110 bool_t
111 __rpc_control(request, info)
112 int request;
113 void *info;
114 {
115 switch (request) {
116 case CLCR_GET_RPCB_TIMEOUT:
117 *(struct timeval *)info = tottimeout;
118 break;
119 case CLCR_SET_RPCB_TIMEOUT:
120 tottimeout = *(struct timeval *)info;
121 break;
122 case CLCR_SET_LOWVERS:
123 __rpc_lowvers = *(int *)info;
124 break;
125 case CLCR_GET_LOWVERS:
126 *(int *)info = __rpc_lowvers;
127 break;
128 default:
129 return (FALSE);
130 }
131 return (TRUE);
132 }
133
134 /*
135 * It might seem that a reader/writer lock would be more reasonable here.
136 * However because getclnthandle(), the only user of the cache functions,
137 * may do a delete_cache() operation if a check_cache() fails to return an
138 * address useful to clnt_tli_create(), we may as well use a mutex.
139 */
140 /*
141 * As it turns out, if the cache lock is *not* a reader/writer lock, we will
142 * block all clnt_create's if we are trying to connect to a host that's down,
143 * since the lock will be held all during that time.
144 */
145
146 /*
147 * The routines check_cache(), add_cache(), delete_cache() manage the
148 * cache of rpcbind addresses for (host, netid).
149 */
150
151 static struct address_cache *
152 check_cache(host, netid)
153 const char *host, *netid;
154 {
155 struct address_cache *cptr;
156
157 /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */
158
159 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) {
160 if (!strcmp(cptr->ac_host, host) &&
161 !strcmp(cptr->ac_netid, netid)) {
162 #ifdef ND_DEBUG
163 fprintf(stderr, "Found cache entry for %s: %s\n",
164 host, netid);
165 #endif
166 return (cptr);
167 }
168 }
169 return ((struct address_cache *) NULL);
170 }
171
172 static void
173 delete_cache(addr)
174 struct netbuf *addr;
175 {
176 struct address_cache *cptr, *prevptr = NULL;
177
178 /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */
179 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) {
180 if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) {
181 free(cptr->ac_host);
182 free(cptr->ac_netid);
183 free(cptr->ac_taddr->buf);
184 free(cptr->ac_taddr);
185 if (cptr->ac_uaddr)
186 free(cptr->ac_uaddr);
187 if (prevptr)
188 prevptr->ac_next = cptr->ac_next;
189 else
190 front = cptr->ac_next;
191 free(cptr);
192 cachesize--;
193 break;
194 }
195 prevptr = cptr;
196 }
197 }
198
199 static void
200 add_cache(host, netid, taddr, uaddr)
201 const char *host, *netid;
202 char *uaddr;
203 struct netbuf *taddr;
204 {
205 struct address_cache *ad_cache, *cptr, *prevptr;
206
207 ad_cache = (struct address_cache *)
208 malloc(sizeof (struct address_cache));
209 if (!ad_cache) {
210 return;
211 }
212 ad_cache->ac_host = strdup(host);
213 ad_cache->ac_netid = strdup(netid);
214 ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL;
215 ad_cache->ac_taddr = (struct netbuf *)malloc(sizeof (struct netbuf));
216 if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr ||
217 (uaddr && !ad_cache->ac_uaddr)) {
218 goto out;
219 }
220 ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len;
221 ad_cache->ac_taddr->buf = (char *) malloc(taddr->len);
222 if (ad_cache->ac_taddr->buf == NULL) {
223 out:
224 if (ad_cache->ac_host)
225 free(ad_cache->ac_host);
226 if (ad_cache->ac_netid)
227 free(ad_cache->ac_netid);
228 if (ad_cache->ac_uaddr)
229 free(ad_cache->ac_uaddr);
230 if (ad_cache->ac_taddr)
231 free(ad_cache->ac_taddr);
232 free(ad_cache);
233 return;
234 }
235 memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len);
236 #ifdef ND_DEBUG
237 fprintf(stderr, "Added to cache: %s : %s\n", host, netid);
238 #endif
239
240 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */
241
242 rwlock_wrlock(&rpcbaddr_cache_lock);
243 if (cachesize < CACHESIZE) {
244 ad_cache->ac_next = front;
245 front = ad_cache;
246 cachesize++;
247 } else {
248 /* Free the last entry */
249 cptr = front;
250 prevptr = NULL;
251 while (cptr->ac_next) {
252 prevptr = cptr;
253 cptr = cptr->ac_next;
254 }
255
256 #ifdef ND_DEBUG
257 fprintf(stderr, "Deleted from cache: %s : %s\n",
258 cptr->ac_host, cptr->ac_netid);
259 #endif
260 free(cptr->ac_host);
261 free(cptr->ac_netid);
262 free(cptr->ac_taddr->buf);
263 free(cptr->ac_taddr);
264 if (cptr->ac_uaddr)
265 free(cptr->ac_uaddr);
266
267 if (prevptr) {
268 prevptr->ac_next = NULL;
269 ad_cache->ac_next = front;
270 front = ad_cache;
271 } else {
272 front = ad_cache;
273 ad_cache->ac_next = NULL;
274 }
275 free(cptr);
276 }
277 rwlock_unlock(&rpcbaddr_cache_lock);
278 }
279
280 /*
281 * This routine will return a client handle that is connected to the
282 * rpcbind. If targaddr is non-NULL, the "universal address" of the
283 * host will be stored in *targaddr; the caller is responsible for
284 * freeing this string.
285 * On error, returns NULL and free's everything.
286 */
287 static CLIENT *
288 getclnthandle(host, nconf, targaddr)
289 const char *host;
290 const struct netconfig *nconf;
291 char **targaddr;
292 {
293 CLIENT *client;
294 struct netbuf *addr, taddr;
295 struct netbuf addr_to_delete;
296 struct __rpc_sockinfo si;
297 struct addrinfo hints, *res, *tres;
298 struct address_cache *ad_cache;
299 char *tmpaddr;
300
301 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */
302
303 /* Get the address of the rpcbind. Check cache first */
304 client = NULL;
305 addr_to_delete.len = 0;
306 rwlock_rdlock(&rpcbaddr_cache_lock);
307 ad_cache = NULL;
308 if (host != NULL)
309 ad_cache = check_cache(host, nconf->nc_netid);
310 if (ad_cache != NULL) {
311 addr = ad_cache->ac_taddr;
312 client = clnt_tli_create(RPC_ANYFD, nconf, addr,
313 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0);
314 if (client != NULL) {
315 if (targaddr)
316 *targaddr = strdup(ad_cache->ac_uaddr);
317 rwlock_unlock(&rpcbaddr_cache_lock);
318 return (client);
319 }
320 addr_to_delete.len = addr->len;
321 addr_to_delete.buf = (char *)malloc(addr->len);
322 if (addr_to_delete.buf == NULL) {
323 addr_to_delete.len = 0;
324 } else {
325 memcpy(addr_to_delete.buf, addr->buf, addr->len);
326 }
327 }
328 rwlock_unlock(&rpcbaddr_cache_lock);
329 if (addr_to_delete.len != 0) {
330 /*
331 * Assume this may be due to cache data being
332 * outdated
333 */
334 rwlock_wrlock(&rpcbaddr_cache_lock);
335 delete_cache(&addr_to_delete);
336 rwlock_unlock(&rpcbaddr_cache_lock);
337 free(addr_to_delete.buf);
338 }
339 if (!__rpc_nconf2sockinfo(nconf, &si)) {
340 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
341 return NULL;
342 }
343
344 memset(&hints, 0, sizeof hints);
345 hints.ai_family = si.si_af;
346 hints.ai_socktype = si.si_socktype;
347 hints.ai_protocol = si.si_proto;
348
349 #ifdef CLNT_DEBUG
350 printf("trying netid %s family %d proto %d socktype %d\n",
351 nconf->nc_netid, si.si_af, si.si_proto, si.si_socktype);
352 #endif
353
354 if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
355 client = local_rpcb();
356 if (! client) {
357 #ifdef ND_DEBUG
358 clnt_pcreateerror("rpcbind clnt interface");
359 #endif
360 return (NULL);
361 } else {
362 struct sockaddr_un sun;
363 if (targaddr) {
364 *targaddr = malloc(sizeof(sun.sun_path));
365 if (*targaddr == NULL) {
366 CLNT_DESTROY(client);
367 return (NULL);
368 }
369 strncpy(*targaddr, _PATH_RPCBINDSOCK,
370 sizeof(sun.sun_path));
371 }
372 return (client);
373 }
374 } else {
375 if (getaddrinfo(host, "sunrpc", &hints, &res) != 0) {
376 rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
377 return NULL;
378 }
379 }
380
381 for (tres = res; tres != NULL; tres = tres->ai_next) {
382 taddr.buf = tres->ai_addr;
383 taddr.len = taddr.maxlen = tres->ai_addrlen;
384
385 #ifdef ND_DEBUG
386 {
387 char *ua;
388
389 ua = taddr2uaddr(nconf, &taddr);
390 fprintf(stderr, "Got it [%s]\n", ua);
391 free(ua);
392 }
393 #endif
394
395 #ifdef ND_DEBUG
396 {
397 int i;
398
399 fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n",
400 taddr.len, taddr.maxlen);
401 fprintf(stderr, "\tAddress is ");
402 for (i = 0; i < taddr.len; i++)
403 fprintf(stderr, "%u.", ((char *)(taddr.buf))[i]);
404 fprintf(stderr, "\n");
405 }
406 #endif
407 client = clnt_tli_create(RPC_ANYFD, nconf, &taddr,
408 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0);
409 #ifdef ND_DEBUG
410 if (! client) {
411 clnt_pcreateerror("rpcbind clnt interface");
412 }
413 #endif
414
415 if (client) {
416 tmpaddr = targaddr ? taddr2uaddr(nconf, &taddr) : NULL;
417 add_cache(host, nconf->nc_netid, &taddr, tmpaddr);
418 if (targaddr)
419 *targaddr = tmpaddr;
420 break;
421 }
422 }
423 if (res)
424 freeaddrinfo(res);
425 return (client);
426 }
427
428 #endif
429
430 /* XXX */
431 #define IN4_LOCALHOST_STRING "127.0.0.1"
432 #define IN6_LOCALHOST_STRING "::1"
433
434 /*
435 * This routine will return a client handle that is connected to the local
436 * rpcbind. Returns NULL on error and free's everything.
437 */
438 static CLIENT *
439 local_rpcb(void)
440 {
441 CLIENT *client;
442 struct socket *so;
443 size_t tsize;
444 struct sockaddr_un sun;
445 int error;
446
447 /*
448 * Try connecting to the local rpcbind through a local socket
449 * first. If this doesn't work, try all transports defined in
450 * the netconfig file.
451 */
452 memset(&sun, 0, sizeof sun);
453 so = NULL;
454 error = socreate(AF_LOCAL, &so, SOCK_STREAM, 0, curthread->td_ucred,
455 curthread);
456 if (error)
457 goto try_nconf;
458 sun.sun_family = AF_LOCAL;
459 strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
460 sun.sun_len = SUN_LEN(&sun);
461
462 tsize = __rpc_get_t_size(AF_LOCAL, 0, 0);
463 client = clnt_vc_create(so, (struct sockaddr *)&sun, (rpcprog_t)RPCBPROG,
464 (rpcvers_t)RPCBVERS, tsize, tsize, 1);
465
466 if (client != NULL) {
467 /* Mark the socket to be closed in destructor */
468 (void) CLNT_CONTROL(client, CLSET_FD_CLOSE, NULL);
469 return client;
470 }
471
472 /* Nobody needs this socket anymore; free the descriptor. */
473 soclose(so);
474
475 try_nconf:
476
477 #if 0
478 static struct netconfig *loopnconf;
479 static char *localhostname;
480
481 /* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */
482 mutex_lock(&loopnconf_lock);
483 if (loopnconf == NULL) {
484 struct netconfig *nconf, *tmpnconf = NULL;
485 void *nc_handle;
486 int fd;
487
488 nc_handle = setnetconfig();
489 if (nc_handle == NULL) {
490 /* fails to open netconfig file */
491 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
492 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
493 mutex_unlock(&loopnconf_lock);
494 return (NULL);
495 }
496 while ((nconf = getnetconfig(nc_handle)) != NULL) {
497 if ((
498 #ifdef INET6
499 strcmp(nconf->nc_protofmly, NC_INET6) == 0 ||
500 #endif
501 strcmp(nconf->nc_protofmly, NC_INET) == 0) &&
502 (nconf->nc_semantics == NC_TPI_COTS ||
503 nconf->nc_semantics == NC_TPI_COTS_ORD)) {
504 fd = __rpc_nconf2fd(nconf);
505 /*
506 * Can't create a socket, assume that
507 * this family isn't configured in the kernel.
508 */
509 if (fd < 0)
510 continue;
511 _close(fd);
512 tmpnconf = nconf;
513 if (!strcmp(nconf->nc_protofmly, NC_INET))
514 localhostname = IN4_LOCALHOST_STRING;
515 else
516 localhostname = IN6_LOCALHOST_STRING;
517 }
518 }
519 if (tmpnconf == NULL) {
520 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
521 mutex_unlock(&loopnconf_lock);
522 return (NULL);
523 }
524 loopnconf = getnetconfigent(tmpnconf->nc_netid);
525 /* loopnconf is never freed */
526 endnetconfig(nc_handle);
527 }
528 mutex_unlock(&loopnconf_lock);
529 client = getclnthandle(localhostname, loopnconf, NULL);
530 return (client);
531 #else
532 return (NULL);
533 #endif
534 }
535
536 /*
537 * Set a mapping between program, version and address.
538 * Calls the rpcbind service to do the mapping.
539 */
540 bool_t
541 rpcb_set(rpcprog_t program, rpcvers_t version,
542 const struct netconfig *nconf, /* Network structure of transport */
543 const struct netbuf *address) /* Services netconfig address */
544 {
545 CLIENT *client;
546 bool_t rslt = FALSE;
547 RPCB parms;
548 #if 0
549 char uidbuf[32];
550 #endif
551 struct netconfig nconfcopy;
552 struct netbuf addresscopy;
553
554 /* parameter checking */
555 if (nconf == NULL) {
556 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
557 return (FALSE);
558 }
559 if (address == NULL) {
560 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
561 return (FALSE);
562 }
563 client = local_rpcb();
564 if (! client) {
565 return (FALSE);
566 }
567
568 /* convert to universal */
569 /*LINTED const castaway*/
570 nconfcopy = *nconf;
571 addresscopy = *address;
572 parms.r_addr = taddr2uaddr(&nconfcopy, &addresscopy);
573 if (!parms.r_addr) {
574 CLNT_DESTROY(client);
575 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
576 return (FALSE); /* no universal address */
577 }
578 parms.r_prog = program;
579 parms.r_vers = version;
580 parms.r_netid = nconf->nc_netid;
581 #if 0
582 /*
583 * Though uid is not being used directly, we still send it for
584 * completeness. For non-unix platforms, perhaps some other
585 * string or an empty string can be sent.
586 */
587 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid());
588 parms.r_owner = uidbuf;
589 #else
590 parms.r_owner = "";
591 #endif
592
593 CLNT_CALL(client, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb,
594 (char *)(void *)&parms, (xdrproc_t) xdr_bool,
595 (char *)(void *)&rslt, tottimeout);
596
597 CLNT_DESTROY(client);
598 free(parms.r_addr, M_RPC);
599 return (rslt);
600 }
601
602 /*
603 * Remove the mapping between program, version and netbuf address.
604 * Calls the rpcbind service to do the un-mapping.
605 * If netbuf is NULL, unset for all the transports, otherwise unset
606 * only for the given transport.
607 */
608 bool_t
609 rpcb_unset(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf)
610 {
611 CLIENT *client;
612 bool_t rslt = FALSE;
613 RPCB parms;
614 #if 0
615 char uidbuf[32];
616 #endif
617
618 client = local_rpcb();
619 if (! client) {
620 return (FALSE);
621 }
622
623 parms.r_prog = program;
624 parms.r_vers = version;
625 if (nconf)
626 parms.r_netid = nconf->nc_netid;
627 else {
628 /*LINTED const castaway*/
629 parms.r_netid = (char *)(uintptr_t) &nullstring[0]; /* unsets all */
630 }
631 /*LINTED const castaway*/
632 parms.r_addr = (char *)(uintptr_t) &nullstring[0];
633 #if 0
634 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid());
635 parms.r_owner = uidbuf;
636 #else
637 parms.r_owner = "";
638 #endif
639
640 CLNT_CALL(client, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb,
641 (char *)(void *)&parms, (xdrproc_t) xdr_bool,
642 (char *)(void *)&rslt, tottimeout);
643
644 CLNT_DESTROY(client);
645 return (rslt);
646 }
647
648 #if 0
649
650 /*
651 * From the merged list, find the appropriate entry
652 */
653 static struct netbuf *
654 got_entry(relp, nconf)
655 rpcb_entry_list_ptr relp;
656 const struct netconfig *nconf;
657 {
658 struct netbuf *na = NULL;
659 rpcb_entry_list_ptr sp;
660 rpcb_entry *rmap;
661
662 for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) {
663 rmap = &sp->rpcb_entry_map;
664 if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) &&
665 (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) &&
666 (nconf->nc_semantics == rmap->r_nc_semantics) &&
667 (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != 0)) {
668 na = uaddr2taddr(nconf, rmap->r_maddr);
669 #ifdef ND_DEBUG
670 fprintf(stderr, "\tRemote address is [%s].\n",
671 rmap->r_maddr);
672 if (!na)
673 fprintf(stderr,
674 "\tCouldn't resolve remote address!\n");
675 #endif
676 break;
677 }
678 }
679 return (na);
680 }
681
682 /*
683 * Quick check to see if rpcbind is up. Tries to connect over
684 * local transport.
685 */
686 static bool_t
687 __rpcbind_is_up()
688 {
689 struct netconfig *nconf;
690 struct sockaddr_un sun;
691 void *localhandle;
692 int sock;
693
694 nconf = NULL;
695 localhandle = setnetconfig();
696 while ((nconf = getnetconfig(localhandle)) != NULL) {
697 if (nconf->nc_protofmly != NULL &&
698 strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0)
699 break;
700 }
701 if (nconf == NULL)
702 return (FALSE);
703
704 endnetconfig(localhandle);
705
706 memset(&sun, 0, sizeof sun);
707 sock = _socket(AF_LOCAL, SOCK_STREAM, 0);
708 if (sock < 0)
709 return (FALSE);
710 sun.sun_family = AF_LOCAL;
711 strncpy(sun.sun_path, _PATH_RPCBINDSOCK, sizeof(sun.sun_path));
712 sun.sun_len = SUN_LEN(&sun);
713
714 if (_connect(sock, (struct sockaddr *)&sun, sun.sun_len) < 0) {
715 _close(sock);
716 return (FALSE);
717 }
718
719 _close(sock);
720 return (TRUE);
721 }
722
723 /*
724 * An internal function which optimizes rpcb_getaddr function. It also
725 * returns the client handle that it uses to contact the remote rpcbind.
726 *
727 * The algorithm used: If the transports is TCP or UDP, it first tries
728 * version 2 (portmap), 4 and then 3 (svr4). This order should be
729 * changed in the next OS release to 4, 2 and 3. We are assuming that by
730 * that time, version 4 would be available on many machines on the network.
731 * With this algorithm, we get performance as well as a plan for
732 * obsoleting version 2.
733 *
734 * For all other transports, the algorithm remains as 4 and then 3.
735 *
736 * XXX: Due to some problems with t_connect(), we do not reuse the same client
737 * handle for COTS cases and hence in these cases we do not return the
738 * client handle. This code will change if t_connect() ever
739 * starts working properly. Also look under clnt_vc.c.
740 */
741 struct netbuf *
742 __rpcb_findaddr_timed(program, version, nconf, host, clpp, tp)
743 rpcprog_t program;
744 rpcvers_t version;
745 const struct netconfig *nconf;
746 const char *host;
747 CLIENT **clpp;
748 struct timeval *tp;
749 {
750 static bool_t check_rpcbind = TRUE;
751 CLIENT *client = NULL;
752 RPCB parms;
753 enum clnt_stat clnt_st;
754 char *ua = NULL;
755 rpcvers_t vers;
756 struct netbuf *address = NULL;
757 rpcvers_t start_vers = RPCBVERS4;
758 struct netbuf servaddr;
759
760 /* parameter checking */
761 if (nconf == NULL) {
762 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
763 return (NULL);
764 }
765
766 parms.r_addr = NULL;
767
768 /*
769 * Use default total timeout if no timeout is specified.
770 */
771 if (tp == NULL)
772 tp = &tottimeout;
773
774 #ifdef PORTMAP
775 /* Try version 2 for TCP or UDP */
776 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
777 u_short port = 0;
778 struct netbuf remote;
779 rpcvers_t pmapvers = 2;
780 struct pmap pmapparms;
781
782 /*
783 * Try UDP only - there are some portmappers out
784 * there that use UDP only.
785 */
786 if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
787 struct netconfig *newnconf;
788
789 if ((newnconf = getnetconfigent("udp")) == NULL) {
790 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
791 return (NULL);
792 }
793 client = getclnthandle(host, newnconf, &parms.r_addr);
794 freenetconfigent(newnconf);
795 } else {
796 client = getclnthandle(host, nconf, &parms.r_addr);
797 }
798 if (client == NULL)
799 return (NULL);
800
801 /*
802 * Set version and retry timeout.
803 */
804 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
805 CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers);
806
807 pmapparms.pm_prog = program;
808 pmapparms.pm_vers = version;
809 pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ?
810 IPPROTO_UDP : IPPROTO_TCP;
811 pmapparms.pm_port = 0; /* not needed */
812 clnt_st = CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT,
813 (xdrproc_t) xdr_pmap, (caddr_t)(void *)&pmapparms,
814 (xdrproc_t) xdr_u_short, (caddr_t)(void *)&port,
815 *tp);
816 if (clnt_st != RPC_SUCCESS) {
817 if ((clnt_st == RPC_PROGVERSMISMATCH) ||
818 (clnt_st == RPC_PROGUNAVAIL))
819 goto try_rpcbind; /* Try different versions */
820 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
821 clnt_geterr(client, &rpc_createerr.cf_error);
822 goto error;
823 } else if (port == 0) {
824 address = NULL;
825 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
826 goto error;
827 }
828 port = htons(port);
829 CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote);
830 if (((address = (struct netbuf *)
831 malloc(sizeof (struct netbuf))) == NULL) ||
832 ((address->buf = (char *)
833 malloc(remote.len)) == NULL)) {
834 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
835 clnt_geterr(client, &rpc_createerr.cf_error);
836 if (address) {
837 free(address);
838 address = NULL;
839 }
840 goto error;
841 }
842 memcpy(address->buf, remote.buf, remote.len);
843 memcpy(&((char *)address->buf)[sizeof (short)],
844 (char *)(void *)&port, sizeof (short));
845 address->len = address->maxlen = remote.len;
846 goto done;
847 }
848 #endif /* PORTMAP */
849
850 try_rpcbind:
851 /*
852 * Check if rpcbind is up. This prevents needless delays when
853 * accessing applications such as the keyserver while booting
854 * disklessly.
855 */
856 if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
857 if (!__rpcbind_is_up()) {
858 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
859 rpc_createerr.cf_error.re_errno = 0;
860 goto error;
861 }
862 check_rpcbind = FALSE;
863 }
864
865 /*
866 * Now we try version 4 and then 3.
867 * We also send the remote system the address we used to
868 * contact it in case it can help to connect back with us
869 */
870 parms.r_prog = program;
871 parms.r_vers = version;
872 /*LINTED const castaway*/
873 parms.r_owner = (char *) &nullstring[0]; /* not needed; */
874 /* just for xdring */
875 parms.r_netid = nconf->nc_netid; /* not really needed */
876
877 /*
878 * If a COTS transport is being used, try getting address via CLTS
879 * transport. This works only with version 4.
880 */
881 if (nconf->nc_semantics == NC_TPI_COTS_ORD ||
882 nconf->nc_semantics == NC_TPI_COTS) {
883
884 void *handle;
885 struct netconfig *nconf_clts;
886 rpcb_entry_list_ptr relp = NULL;
887
888 if (client == NULL) {
889 /* This did not go through the above PORTMAP/TCP code */
890 if ((handle = __rpc_setconf("datagram_v")) != NULL) {
891 while ((nconf_clts = __rpc_getconf(handle))
892 != NULL) {
893 if (strcmp(nconf_clts->nc_protofmly,
894 nconf->nc_protofmly) != 0) {
895 continue;
896 }
897 client = getclnthandle(host, nconf_clts,
898 &parms.r_addr);
899 break;
900 }
901 __rpc_endconf(handle);
902 }
903 if (client == NULL)
904 goto regular_rpcbind; /* Go the regular way */
905 } else {
906 /* This is a UDP PORTMAP handle. Change to version 4 */
907 vers = RPCBVERS4;
908 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
909 }
910 /*
911 * We also send the remote system the address we used to
912 * contact it in case it can help it connect back with us
913 */
914 if (parms.r_addr == NULL) {
915 /*LINTED const castaway*/
916 parms.r_addr = (char *) &nullstring[0]; /* for XDRing */
917 }
918
919 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
920
921 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDRLIST,
922 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms,
923 (xdrproc_t) xdr_rpcb_entry_list_ptr,
924 (char *)(void *)&relp, *tp);
925 if (clnt_st == RPC_SUCCESS) {
926 if ((address = got_entry(relp, nconf)) != NULL) {
927 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr,
928 (char *)(void *)&relp);
929 CLNT_CONTROL(client, CLGET_SVC_ADDR,
930 (char *)(void *)&servaddr);
931 __rpc_fixup_addr(address, &servaddr);
932 goto done;
933 }
934 /* Entry not found for this transport */
935 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr,
936 (char *)(void *)&relp);
937 /*
938 * XXX: should have perhaps returned with error but
939 * since the remote machine might not always be able
940 * to send the address on all transports, we try the
941 * regular way with regular_rpcbind
942 */
943 goto regular_rpcbind;
944 } else if ((clnt_st == RPC_PROGVERSMISMATCH) ||
945 (clnt_st == RPC_PROGUNAVAIL)) {
946 start_vers = RPCBVERS; /* Try version 3 now */
947 goto regular_rpcbind; /* Try different versions */
948 } else {
949 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
950 clnt_geterr(client, &rpc_createerr.cf_error);
951 goto error;
952 }
953 }
954
955 regular_rpcbind:
956
957 /* Now the same transport is to be used to get the address */
958 if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) ||
959 (nconf->nc_semantics == NC_TPI_COTS))) {
960 /* A CLTS type of client - destroy it */
961 CLNT_DESTROY(client);
962 client = NULL;
963 }
964
965 if (client == NULL) {
966 client = getclnthandle(host, nconf, &parms.r_addr);
967 if (client == NULL) {
968 goto error;
969 }
970 }
971 if (parms.r_addr == NULL) {
972 /*LINTED const castaway*/
973 parms.r_addr = (char *) &nullstring[0];
974 }
975
976 /* First try from start_vers and then version 3 (RPCBVERS) */
977
978 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime);
979 for (vers = start_vers; vers >= RPCBVERS; vers--) {
980 /* Set the version */
981 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
982 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDR,
983 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms,
984 (xdrproc_t) xdr_wrapstring, (char *)(void *) &ua, *tp);
985 if (clnt_st == RPC_SUCCESS) {
986 if ((ua == NULL) || (ua[0] == 0)) {
987 /* address unknown */
988 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
989 goto error;
990 }
991 address = uaddr2taddr(nconf, ua);
992 #ifdef ND_DEBUG
993 fprintf(stderr, "\tRemote address is [%s]\n", ua);
994 if (!address)
995 fprintf(stderr,
996 "\tCouldn't resolve remote address!\n");
997 #endif
998 xdr_free((xdrproc_t)xdr_wrapstring,
999 (char *)(void *)&ua);
1000
1001 if (! address) {
1002 /* We don't know about your universal address */
1003 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
1004 goto error;
1005 }
1006 CLNT_CONTROL(client, CLGET_SVC_ADDR,
1007 (char *)(void *)&servaddr);
1008 __rpc_fixup_addr(address, &servaddr);
1009 goto done;
1010 } else if (clnt_st == RPC_PROGVERSMISMATCH) {
1011 struct rpc_err rpcerr;
1012
1013 clnt_geterr(client, &rpcerr);
1014 if (rpcerr.re_vers.low > RPCBVERS4)
1015 goto error; /* a new version, can't handle */
1016 } else if (clnt_st != RPC_PROGUNAVAIL) {
1017 /* Cant handle this error */
1018 rpc_createerr.cf_stat = clnt_st;
1019 clnt_geterr(client, &rpc_createerr.cf_error);
1020 goto error;
1021 }
1022 }
1023
1024 error:
1025 if (client) {
1026 CLNT_DESTROY(client);
1027 client = NULL;
1028 }
1029 done:
1030 if (nconf->nc_semantics != NC_TPI_CLTS) {
1031 /* This client is the connectionless one */
1032 if (client) {
1033 CLNT_DESTROY(client);
1034 client = NULL;
1035 }
1036 }
1037 if (clpp) {
1038 *clpp = client;
1039 } else if (client) {
1040 CLNT_DESTROY(client);
1041 }
1042 if (parms.r_addr != NULL && parms.r_addr != nullstring)
1043 free(parms.r_addr);
1044 return (address);
1045 }
1046
1047
1048 /*
1049 * Find the mapped address for program, version.
1050 * Calls the rpcbind service remotely to do the lookup.
1051 * Uses the transport specified in nconf.
1052 * Returns FALSE (0) if no map exists, else returns 1.
1053 *
1054 * Assuming that the address is all properly allocated
1055 */
1056 bool_t
1057 rpcb_getaddr(program, version, nconf, address, host)
1058 rpcprog_t program;
1059 rpcvers_t version;
1060 const struct netconfig *nconf;
1061 struct netbuf *address;
1062 const char *host;
1063 {
1064 struct netbuf *na;
1065
1066 if ((na = __rpcb_findaddr_timed(program, version,
1067 (struct netconfig *) nconf, (char *) host,
1068 (CLIENT **) NULL, (struct timeval *) NULL)) == NULL)
1069 return (FALSE);
1070
1071 if (na->len > address->maxlen) {
1072 /* Too long address */
1073 free(na->buf);
1074 free(na);
1075 rpc_createerr.cf_stat = RPC_FAILED;
1076 return (FALSE);
1077 }
1078 memcpy(address->buf, na->buf, (size_t)na->len);
1079 address->len = na->len;
1080 free(na->buf);
1081 free(na);
1082 return (TRUE);
1083 }
1084
1085 /*
1086 * Get a copy of the current maps.
1087 * Calls the rpcbind service remotely to get the maps.
1088 *
1089 * It returns only a list of the services
1090 * It returns NULL on failure.
1091 */
1092 rpcblist *
1093 rpcb_getmaps(nconf, host)
1094 const struct netconfig *nconf;
1095 const char *host;
1096 {
1097 rpcblist_ptr head = NULL;
1098 CLIENT *client;
1099 enum clnt_stat clnt_st;
1100 rpcvers_t vers = 0;
1101
1102 client = getclnthandle(host, nconf, NULL);
1103 if (client == NULL) {
1104 return (head);
1105 }
1106 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP,
1107 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr,
1108 (char *)(void *)&head, tottimeout);
1109 if (clnt_st == RPC_SUCCESS)
1110 goto done;
1111
1112 if ((clnt_st != RPC_PROGVERSMISMATCH) &&
1113 (clnt_st != RPC_PROGUNAVAIL)) {
1114 rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1115 clnt_geterr(client, &rpc_createerr.cf_error);
1116 goto done;
1117 }
1118
1119 /* fall back to earlier version */
1120 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers);
1121 if (vers == RPCBVERS4) {
1122 vers = RPCBVERS;
1123 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
1124 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP,
1125 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr,
1126 (char *)(void *)&head, tottimeout) == RPC_SUCCESS)
1127 goto done;
1128 }
1129 rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1130 clnt_geterr(client, &rpc_createerr.cf_error);
1131
1132 done:
1133 CLNT_DESTROY(client);
1134 return (head);
1135 }
1136
1137 /*
1138 * rpcbinder remote-call-service interface.
1139 * This routine is used to call the rpcbind remote call service
1140 * which will look up a service program in the address maps, and then
1141 * remotely call that routine with the given parameters. This allows
1142 * programs to do a lookup and call in one step.
1143 */
1144 enum clnt_stat
1145 rpcb_rmtcall(nconf, host, prog, vers, proc, xdrargs, argsp,
1146 xdrres, resp, tout, addr_ptr)
1147 const struct netconfig *nconf; /* Netconfig structure */
1148 const char *host; /* Remote host name */
1149 rpcprog_t prog;
1150 rpcvers_t vers;
1151 rpcproc_t proc; /* Remote proc identifiers */
1152 xdrproc_t xdrargs, xdrres; /* XDR routines */
1153 caddr_t argsp, resp; /* Argument and Result */
1154 struct timeval tout; /* Timeout value for this call */
1155 const struct netbuf *addr_ptr; /* Preallocated netbuf address */
1156 {
1157 CLIENT *client;
1158 enum clnt_stat stat;
1159 struct r_rpcb_rmtcallargs a;
1160 struct r_rpcb_rmtcallres r;
1161 rpcvers_t rpcb_vers;
1162
1163 stat = 0;
1164 client = getclnthandle(host, nconf, NULL);
1165 if (client == NULL) {
1166 return (RPC_FAILED);
1167 }
1168 /*LINTED const castaway*/
1169 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&rmttimeout);
1170 a.prog = prog;
1171 a.vers = vers;
1172 a.proc = proc;
1173 a.args.args_val = argsp;
1174 a.xdr_args = xdrargs;
1175 r.addr = NULL;
1176 r.results.results_val = resp;
1177 r.xdr_res = xdrres;
1178
1179 for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) {
1180 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&rpcb_vers);
1181 stat = CLNT_CALL(client, (rpcproc_t)RPCBPROC_CALLIT,
1182 (xdrproc_t) xdr_rpcb_rmtcallargs, (char *)(void *)&a,
1183 (xdrproc_t) xdr_rpcb_rmtcallres, (char *)(void *)&r, tout);
1184 if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) {
1185 struct netbuf *na;
1186 /*LINTED const castaway*/
1187 na = uaddr2taddr((struct netconfig *) nconf, r.addr);
1188 if (!na) {
1189 stat = RPC_N2AXLATEFAILURE;
1190 /*LINTED const castaway*/
1191 ((struct netbuf *) addr_ptr)->len = 0;
1192 goto error;
1193 }
1194 if (na->len > addr_ptr->maxlen) {
1195 /* Too long address */
1196 stat = RPC_FAILED; /* XXX A better error no */
1197 free(na->buf);
1198 free(na);
1199 /*LINTED const castaway*/
1200 ((struct netbuf *) addr_ptr)->len = 0;
1201 goto error;
1202 }
1203 memcpy(addr_ptr->buf, na->buf, (size_t)na->len);
1204 /*LINTED const castaway*/
1205 ((struct netbuf *)addr_ptr)->len = na->len;
1206 free(na->buf);
1207 free(na);
1208 break;
1209 } else if ((stat != RPC_PROGVERSMISMATCH) &&
1210 (stat != RPC_PROGUNAVAIL)) {
1211 goto error;
1212 }
1213 }
1214 error:
1215 CLNT_DESTROY(client);
1216 if (r.addr)
1217 xdr_free((xdrproc_t) xdr_wrapstring, (char *)(void *)&r.addr);
1218 return (stat);
1219 }
1220
1221 /*
1222 * Gets the time on the remote host.
1223 * Returns 1 if succeeds else 0.
1224 */
1225 bool_t
1226 rpcb_gettime(host, timep)
1227 const char *host;
1228 time_t *timep;
1229 {
1230 CLIENT *client = NULL;
1231 void *handle;
1232 struct netconfig *nconf;
1233 rpcvers_t vers;
1234 enum clnt_stat st;
1235
1236
1237 if ((host == NULL) || (host[0] == 0)) {
1238 time(timep);
1239 return (TRUE);
1240 }
1241
1242 if ((handle = __rpc_setconf("netpath")) == NULL) {
1243 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1244 return (FALSE);
1245 }
1246 rpc_createerr.cf_stat = RPC_SUCCESS;
1247 while (client == NULL) {
1248 if ((nconf = __rpc_getconf(handle)) == NULL) {
1249 if (rpc_createerr.cf_stat == RPC_SUCCESS)
1250 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1251 break;
1252 }
1253 client = getclnthandle(host, nconf, NULL);
1254 if (client)
1255 break;
1256 }
1257 __rpc_endconf(handle);
1258 if (client == (CLIENT *) NULL) {
1259 return (FALSE);
1260 }
1261
1262 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME,
1263 (xdrproc_t) xdr_void, NULL,
1264 (xdrproc_t) xdr_int, (char *)(void *)timep, tottimeout);
1265
1266 if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) {
1267 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers);
1268 if (vers == RPCBVERS4) {
1269 /* fall back to earlier version */
1270 vers = RPCBVERS;
1271 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
1272 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME,
1273 (xdrproc_t) xdr_void, NULL,
1274 (xdrproc_t) xdr_int, (char *)(void *)timep,
1275 tottimeout);
1276 }
1277 }
1278 CLNT_DESTROY(client);
1279 return (st == RPC_SUCCESS? TRUE: FALSE);
1280 }
1281
1282 static bool_t
1283 xdr_netbuf(XDR *xdrs, struct netbuf *objp)
1284 {
1285 bool_t dummy;
1286 void **pp;
1287
1288 if (!xdr_uint32_t(xdrs, (uint32_t *) &objp->maxlen)) {
1289 return (FALSE);
1290 }
1291 pp = &objp->buf;
1292
1293 if (objp->maxlen > RPC_MAXDATASIZE) {
1294 return (FALSE);
1295 }
1296
1297 dummy = xdr_bytes(xdrs, (char **) pp,
1298 (u_int *)&(objp->len), objp->maxlen);
1299 return (dummy);
1300 }
1301
1302 /*
1303 * Converts taddr to universal address. This routine should never
1304 * really be called because local n2a libraries are always provided.
1305 */
1306 char *
1307 rpcb_taddr2uaddr(struct netconfig *nconf, struct netbuf *taddr)
1308 {
1309 CLIENT *client;
1310 char *uaddr = NULL;
1311
1312
1313 /* parameter checking */
1314 if (nconf == NULL) {
1315 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1316 return (NULL);
1317 }
1318 if (taddr == NULL) {
1319 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
1320 return (NULL);
1321 }
1322 client = local_rpcb();
1323 if (! client) {
1324 return (NULL);
1325 }
1326
1327 CLNT_CALL(client, (rpcproc_t)RPCBPROC_TADDR2UADDR,
1328 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr,
1329 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, tottimeout);
1330 CLNT_DESTROY(client);
1331 return (uaddr);
1332 }
1333
1334 /*
1335 * Converts universal address to netbuf. This routine should never
1336 * really be called because local n2a libraries are always provided.
1337 */
1338 struct netbuf *
1339 rpcb_uaddr2taddr(struct netconfig *nconf, char *uaddr)
1340 {
1341 CLIENT *client;
1342 struct netbuf *taddr;
1343
1344
1345 /* parameter checking */
1346 if (nconf == NULL) {
1347 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1348 return (NULL);
1349 }
1350 if (uaddr == NULL) {
1351 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
1352 return (NULL);
1353 }
1354 client = local_rpcb();
1355 if (! client) {
1356 return (NULL);
1357 }
1358
1359 taddr = (struct netbuf *)malloc(sizeof (struct netbuf), M_RPC, M_WAITOK|M_ZERO);
1360 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_UADDR2TADDR,
1361 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr,
1362 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr,
1363 tottimeout) != RPC_SUCCESS) {
1364 free(taddr);
1365 taddr = NULL;
1366 }
1367 CLNT_DESTROY(client);
1368 return (taddr);
1369 }
1370
1371 #endif
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