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 * Copyright (c) 2010, Oracle America, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 * - Neither the name of the "Oracle America, Inc." nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30 /*
31 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
32 */
33
34 /* #ident "@(#)rpcb_clnt.c 1.27 94/04/24 SMI" */
35
36
37 #if defined(LIBC_SCCS) && !defined(lint)
38 static char sccsid[] = "@(#)rpcb_clnt.c 1.30 89/06/21 Copyr 1988 Sun Micro";
39 #endif
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
42
43 /*
44 * rpcb_clnt.c
45 * interface to rpcbind rpc service.
46 *
47 * Copyright (C) 1988, Sun Microsystems, Inc.
48 */
49
50 #include "opt_inet6.h"
51
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/kernel.h>
55 #include <sys/malloc.h>
56 #include <sys/proc.h>
57 #include <sys/socket.h>
58 #include <sys/socketvar.h>
59
60 #include <rpc/rpc.h>
61 #include <rpc/rpcb_clnt.h>
62 #include <rpc/rpcb_prot.h>
63
64 #include <rpc/rpc_com.h>
65
66 static struct timeval tottimeout = { 60, 0 };
67 static const char nullstring[] = "\000";
68
69 static CLIENT *local_rpcb(void);
70
71 #if 0
72
73 static const struct timeval rmttimeout = { 3, 0 };
74 static struct timeval rpcbrmttime = { 15, 0 };
75
76 #define CACHESIZE 6
77
78 struct address_cache {
79 char *ac_host;
80 char *ac_netid;
81 char *ac_uaddr;
82 struct netbuf *ac_taddr;
83 struct address_cache *ac_next;
84 };
85
86 static struct address_cache *front;
87 static int cachesize;
88
89 #define CLCR_GET_RPCB_TIMEOUT 1
90 #define CLCR_SET_RPCB_TIMEOUT 2
91
92
93 extern int __rpc_lowvers;
94
95 static struct address_cache *check_cache(const char *, const char *);
96 static void delete_cache(struct netbuf *);
97 static void add_cache(const char *, const char *, struct netbuf *, char *);
98 static CLIENT *getclnthandle(const char *, const struct netconfig *, char **);
99 static CLIENT *local_rpcb(void);
100 static struct netbuf *got_entry(rpcb_entry_list_ptr, const struct netconfig *);
101
102 /*
103 * This routine adjusts the timeout used for calls to the remote rpcbind.
104 * Also, this routine can be used to set the use of portmapper version 2
105 * only when doing rpc_broadcasts
106 * These are private routines that may not be provided in future releases.
107 */
108 bool_t
109 __rpc_control(request, info)
110 int request;
111 void *info;
112 {
113 switch (request) {
114 case CLCR_GET_RPCB_TIMEOUT:
115 *(struct timeval *)info = tottimeout;
116 break;
117 case CLCR_SET_RPCB_TIMEOUT:
118 tottimeout = *(struct timeval *)info;
119 break;
120 case CLCR_SET_LOWVERS:
121 __rpc_lowvers = *(int *)info;
122 break;
123 case CLCR_GET_LOWVERS:
124 *(int *)info = __rpc_lowvers;
125 break;
126 default:
127 return (FALSE);
128 }
129 return (TRUE);
130 }
131
132 /*
133 * It might seem that a reader/writer lock would be more reasonable here.
134 * However because getclnthandle(), the only user of the cache functions,
135 * may do a delete_cache() operation if a check_cache() fails to return an
136 * address useful to clnt_tli_create(), we may as well use a mutex.
137 */
138 /*
139 * As it turns out, if the cache lock is *not* a reader/writer lock, we will
140 * block all clnt_create's if we are trying to connect to a host that's down,
141 * since the lock will be held all during that time.
142 */
143
144 /*
145 * The routines check_cache(), add_cache(), delete_cache() manage the
146 * cache of rpcbind addresses for (host, netid).
147 */
148
149 static struct address_cache *
150 check_cache(host, netid)
151 const char *host, *netid;
152 {
153 struct address_cache *cptr;
154
155 /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */
156
157 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) {
158 if (!strcmp(cptr->ac_host, host) &&
159 !strcmp(cptr->ac_netid, netid)) {
160 #ifdef ND_DEBUG
161 fprintf(stderr, "Found cache entry for %s: %s\n",
162 host, netid);
163 #endif
164 return (cptr);
165 }
166 }
167 return ((struct address_cache *) NULL);
168 }
169
170 static void
171 delete_cache(addr)
172 struct netbuf *addr;
173 {
174 struct address_cache *cptr, *prevptr = NULL;
175
176 /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */
177 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) {
178 if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) {
179 free(cptr->ac_host);
180 free(cptr->ac_netid);
181 free(cptr->ac_taddr->buf);
182 free(cptr->ac_taddr);
183 if (cptr->ac_uaddr)
184 free(cptr->ac_uaddr);
185 if (prevptr)
186 prevptr->ac_next = cptr->ac_next;
187 else
188 front = cptr->ac_next;
189 free(cptr);
190 cachesize--;
191 break;
192 }
193 prevptr = cptr;
194 }
195 }
196
197 static void
198 add_cache(host, netid, taddr, uaddr)
199 const char *host, *netid;
200 char *uaddr;
201 struct netbuf *taddr;
202 {
203 struct address_cache *ad_cache, *cptr, *prevptr;
204
205 ad_cache = (struct address_cache *)
206 malloc(sizeof (struct address_cache));
207 if (!ad_cache) {
208 return;
209 }
210 ad_cache->ac_host = strdup(host);
211 ad_cache->ac_netid = strdup(netid);
212 ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL;
213 ad_cache->ac_taddr = (struct netbuf *)malloc(sizeof (struct netbuf));
214 if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr ||
215 (uaddr && !ad_cache->ac_uaddr)) {
216 goto out;
217 }
218 ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len;
219 ad_cache->ac_taddr->buf = (char *) malloc(taddr->len);
220 if (ad_cache->ac_taddr->buf == NULL) {
221 out:
222 if (ad_cache->ac_host)
223 free(ad_cache->ac_host);
224 if (ad_cache->ac_netid)
225 free(ad_cache->ac_netid);
226 if (ad_cache->ac_uaddr)
227 free(ad_cache->ac_uaddr);
228 if (ad_cache->ac_taddr)
229 free(ad_cache->ac_taddr);
230 free(ad_cache);
231 return;
232 }
233 memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len);
234 #ifdef ND_DEBUG
235 fprintf(stderr, "Added to cache: %s : %s\n", host, netid);
236 #endif
237
238 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */
239
240 rwlock_wrlock(&rpcbaddr_cache_lock);
241 if (cachesize < CACHESIZE) {
242 ad_cache->ac_next = front;
243 front = ad_cache;
244 cachesize++;
245 } else {
246 /* Free the last entry */
247 cptr = front;
248 prevptr = NULL;
249 while (cptr->ac_next) {
250 prevptr = cptr;
251 cptr = cptr->ac_next;
252 }
253
254 #ifdef ND_DEBUG
255 fprintf(stderr, "Deleted from cache: %s : %s\n",
256 cptr->ac_host, cptr->ac_netid);
257 #endif
258 free(cptr->ac_host);
259 free(cptr->ac_netid);
260 free(cptr->ac_taddr->buf);
261 free(cptr->ac_taddr);
262 if (cptr->ac_uaddr)
263 free(cptr->ac_uaddr);
264
265 if (prevptr) {
266 prevptr->ac_next = NULL;
267 ad_cache->ac_next = front;
268 front = ad_cache;
269 } else {
270 front = ad_cache;
271 ad_cache->ac_next = NULL;
272 }
273 free(cptr);
274 }
275 rwlock_unlock(&rpcbaddr_cache_lock);
276 }
277
278 /*
279 * This routine will return a client handle that is connected to the
280 * rpcbind. If targaddr is non-NULL, the "universal address" of the
281 * host will be stored in *targaddr; the caller is responsible for
282 * freeing this string.
283 * On error, returns NULL and free's everything.
284 */
285 static CLIENT *
286 getclnthandle(host, nconf, targaddr)
287 const char *host;
288 const struct netconfig *nconf;
289 char **targaddr;
290 {
291 CLIENT *client;
292 struct netbuf *addr, taddr;
293 struct netbuf addr_to_delete;
294 struct __rpc_sockinfo si;
295 struct addrinfo hints, *res, *tres;
296 struct address_cache *ad_cache;
297 char *tmpaddr;
298
299 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */
300
301 /* Get the address of the rpcbind. Check cache first */
302 client = NULL;
303 addr_to_delete.len = 0;
304 rwlock_rdlock(&rpcbaddr_cache_lock);
305 ad_cache = NULL;
306 if (host != NULL)
307 ad_cache = check_cache(host, nconf->nc_netid);
308 if (ad_cache != NULL) {
309 addr = ad_cache->ac_taddr;
310 client = clnt_tli_create(RPC_ANYFD, nconf, addr,
311 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0);
312 if (client != NULL) {
313 if (targaddr)
314 *targaddr = strdup(ad_cache->ac_uaddr);
315 rwlock_unlock(&rpcbaddr_cache_lock);
316 return (client);
317 }
318 addr_to_delete.len = addr->len;
319 addr_to_delete.buf = (char *)malloc(addr->len);
320 if (addr_to_delete.buf == NULL) {
321 addr_to_delete.len = 0;
322 } else {
323 memcpy(addr_to_delete.buf, addr->buf, addr->len);
324 }
325 }
326 rwlock_unlock(&rpcbaddr_cache_lock);
327 if (addr_to_delete.len != 0) {
328 /*
329 * Assume this may be due to cache data being
330 * outdated
331 */
332 rwlock_wrlock(&rpcbaddr_cache_lock);
333 delete_cache(&addr_to_delete);
334 rwlock_unlock(&rpcbaddr_cache_lock);
335 free(addr_to_delete.buf);
336 }
337 if (!__rpc_nconf2sockinfo(nconf, &si)) {
338 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
339 return NULL;
340 }
341
342 memset(&hints, 0, sizeof hints);
343 hints.ai_family = si.si_af;
344 hints.ai_socktype = si.si_socktype;
345 hints.ai_protocol = si.si_proto;
346
347 #ifdef CLNT_DEBUG
348 printf("trying netid %s family %d proto %d socktype %d\n",
349 nconf->nc_netid, si.si_af, si.si_proto, si.si_socktype);
350 #endif
351
352 if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
353 client = local_rpcb();
354 if (! client) {
355 #ifdef ND_DEBUG
356 clnt_pcreateerror("rpcbind clnt interface");
357 #endif
358 return (NULL);
359 } else {
360 struct sockaddr_un sun;
361 if (targaddr) {
362 *targaddr = malloc(sizeof(sun.sun_path));
363 if (*targaddr == NULL) {
364 CLNT_DESTROY(client);
365 return (NULL);
366 }
367 strncpy(*targaddr, _PATH_RPCBINDSOCK,
368 sizeof(sun.sun_path));
369 }
370 return (client);
371 }
372 } else {
373 if (getaddrinfo(host, "sunrpc", &hints, &res) != 0) {
374 rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
375 return NULL;
376 }
377 }
378
379 for (tres = res; tres != NULL; tres = tres->ai_next) {
380 taddr.buf = tres->ai_addr;
381 taddr.len = taddr.maxlen = tres->ai_addrlen;
382
383 #ifdef ND_DEBUG
384 {
385 char *ua;
386
387 ua = taddr2uaddr(nconf, &taddr);
388 fprintf(stderr, "Got it [%s]\n", ua);
389 free(ua);
390 }
391 #endif
392
393 #ifdef ND_DEBUG
394 {
395 int i;
396
397 fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n",
398 taddr.len, taddr.maxlen);
399 fprintf(stderr, "\tAddress is ");
400 for (i = 0; i < taddr.len; i++)
401 fprintf(stderr, "%u.", ((char *)(taddr.buf))[i]);
402 fprintf(stderr, "\n");
403 }
404 #endif
405 client = clnt_tli_create(RPC_ANYFD, nconf, &taddr,
406 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0);
407 #ifdef ND_DEBUG
408 if (! client) {
409 clnt_pcreateerror("rpcbind clnt interface");
410 }
411 #endif
412
413 if (client) {
414 tmpaddr = targaddr ? taddr2uaddr(nconf, &taddr) : NULL;
415 add_cache(host, nconf->nc_netid, &taddr, tmpaddr);
416 if (targaddr)
417 *targaddr = tmpaddr;
418 break;
419 }
420 }
421 if (res)
422 freeaddrinfo(res);
423 return (client);
424 }
425
426 #endif
427
428 /* XXX */
429 #define IN4_LOCALHOST_STRING "127.0.0.1"
430 #define IN6_LOCALHOST_STRING "::1"
431
432 /*
433 * This routine will return a client handle that is connected to the local
434 * rpcbind. Returns NULL on error and free's everything.
435 */
436 static CLIENT *
437 local_rpcb()
438 {
439 CLIENT *client;
440 struct socket *so;
441 size_t tsize;
442 struct sockaddr_un sun;
443 int error;
444
445 /*
446 * Try connecting to the local rpcbind through a local socket
447 * first. If this doesn't work, try all transports defined in
448 * the netconfig file.
449 */
450 memset(&sun, 0, sizeof sun);
451 so = NULL;
452 error = socreate(AF_LOCAL, &so, SOCK_STREAM, 0, curthread->td_ucred,
453 curthread);
454 if (error)
455 goto try_nconf;
456 sun.sun_family = AF_LOCAL;
457 strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
458 sun.sun_len = SUN_LEN(&sun);
459
460 tsize = __rpc_get_t_size(AF_LOCAL, 0, 0);
461 client = clnt_vc_create(so, (struct sockaddr *)&sun, (rpcprog_t)RPCBPROG,
462 (rpcvers_t)RPCBVERS, tsize, tsize, 1);
463
464 if (client != NULL) {
465 /* Mark the socket to be closed in destructor */
466 (void) CLNT_CONTROL(client, CLSET_FD_CLOSE, NULL);
467 return client;
468 }
469
470 /* Nobody needs this socket anymore; free the descriptor. */
471 soclose(so);
472
473 try_nconf:
474
475 #if 0
476 static struct netconfig *loopnconf;
477 static char *localhostname;
478
479 /* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */
480 mutex_lock(&loopnconf_lock);
481 if (loopnconf == NULL) {
482 struct netconfig *nconf, *tmpnconf = NULL;
483 void *nc_handle;
484 int fd;
485
486 nc_handle = setnetconfig();
487 if (nc_handle == NULL) {
488 /* fails to open netconfig file */
489 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
490 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
491 mutex_unlock(&loopnconf_lock);
492 return (NULL);
493 }
494 while ((nconf = getnetconfig(nc_handle)) != NULL) {
495 if ((
496 #ifdef INET6
497 strcmp(nconf->nc_protofmly, NC_INET6) == 0 ||
498 #endif
499 strcmp(nconf->nc_protofmly, NC_INET) == 0) &&
500 (nconf->nc_semantics == NC_TPI_COTS ||
501 nconf->nc_semantics == NC_TPI_COTS_ORD)) {
502 fd = __rpc_nconf2fd(nconf);
503 /*
504 * Can't create a socket, assume that
505 * this family isn't configured in the kernel.
506 */
507 if (fd < 0)
508 continue;
509 _close(fd);
510 tmpnconf = nconf;
511 if (!strcmp(nconf->nc_protofmly, NC_INET))
512 localhostname = IN4_LOCALHOST_STRING;
513 else
514 localhostname = IN6_LOCALHOST_STRING;
515 }
516 }
517 if (tmpnconf == NULL) {
518 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
519 mutex_unlock(&loopnconf_lock);
520 return (NULL);
521 }
522 loopnconf = getnetconfigent(tmpnconf->nc_netid);
523 /* loopnconf is never freed */
524 endnetconfig(nc_handle);
525 }
526 mutex_unlock(&loopnconf_lock);
527 client = getclnthandle(localhostname, loopnconf, NULL);
528 return (client);
529 #else
530 return (NULL);
531 #endif
532 }
533
534 /*
535 * Set a mapping between program, version and address.
536 * Calls the rpcbind service to do the mapping.
537 */
538 bool_t
539 rpcb_set(rpcprog_t program, rpcvers_t version,
540 const struct netconfig *nconf, /* Network structure of transport */
541 const struct netbuf *address) /* Services netconfig address */
542 {
543 CLIENT *client;
544 bool_t rslt = FALSE;
545 RPCB parms;
546 #if 0
547 char uidbuf[32];
548 #endif
549 struct netconfig nconfcopy;
550 struct netbuf addresscopy;
551
552 /* parameter checking */
553 if (nconf == NULL) {
554 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
555 return (FALSE);
556 }
557 if (address == NULL) {
558 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
559 return (FALSE);
560 }
561 client = local_rpcb();
562 if (! client) {
563 return (FALSE);
564 }
565
566 /* convert to universal */
567 /*LINTED const castaway*/
568 nconfcopy = *nconf;
569 addresscopy = *address;
570 parms.r_addr = taddr2uaddr(&nconfcopy, &addresscopy);
571 if (!parms.r_addr) {
572 CLNT_DESTROY(client);
573 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
574 return (FALSE); /* no universal address */
575 }
576 parms.r_prog = program;
577 parms.r_vers = version;
578 parms.r_netid = nconf->nc_netid;
579 #if 0
580 /*
581 * Though uid is not being used directly, we still send it for
582 * completeness. For non-unix platforms, perhaps some other
583 * string or an empty string can be sent.
584 */
585 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid());
586 parms.r_owner = uidbuf;
587 #else
588 parms.r_owner = "";
589 #endif
590
591 CLNT_CALL(client, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb,
592 (char *)(void *)&parms, (xdrproc_t) xdr_bool,
593 (char *)(void *)&rslt, tottimeout);
594
595 CLNT_DESTROY(client);
596 free(parms.r_addr, M_RPC);
597 return (rslt);
598 }
599
600 /*
601 * Remove the mapping between program, version and netbuf address.
602 * Calls the rpcbind service to do the un-mapping.
603 * If netbuf is NULL, unset for all the transports, otherwise unset
604 * only for the given transport.
605 */
606 bool_t
607 rpcb_unset(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf)
608 {
609 CLIENT *client;
610 bool_t rslt = FALSE;
611 RPCB parms;
612 #if 0
613 char uidbuf[32];
614 #endif
615
616 client = local_rpcb();
617 if (! client) {
618 return (FALSE);
619 }
620
621 parms.r_prog = program;
622 parms.r_vers = version;
623 if (nconf)
624 parms.r_netid = nconf->nc_netid;
625 else {
626 /*LINTED const castaway*/
627 parms.r_netid = (char *)(uintptr_t) &nullstring[0]; /* unsets all */
628 }
629 /*LINTED const castaway*/
630 parms.r_addr = (char *)(uintptr_t) &nullstring[0];
631 #if 0
632 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid());
633 parms.r_owner = uidbuf;
634 #else
635 parms.r_owner = "";
636 #endif
637
638 CLNT_CALL(client, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb,
639 (char *)(void *)&parms, (xdrproc_t) xdr_bool,
640 (char *)(void *)&rslt, tottimeout);
641
642 CLNT_DESTROY(client);
643 return (rslt);
644 }
645
646 #if 0
647
648 /*
649 * From the merged list, find the appropriate entry
650 */
651 static struct netbuf *
652 got_entry(relp, nconf)
653 rpcb_entry_list_ptr relp;
654 const struct netconfig *nconf;
655 {
656 struct netbuf *na = NULL;
657 rpcb_entry_list_ptr sp;
658 rpcb_entry *rmap;
659
660 for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) {
661 rmap = &sp->rpcb_entry_map;
662 if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) &&
663 (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) &&
664 (nconf->nc_semantics == rmap->r_nc_semantics) &&
665 (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != 0)) {
666 na = uaddr2taddr(nconf, rmap->r_maddr);
667 #ifdef ND_DEBUG
668 fprintf(stderr, "\tRemote address is [%s].\n",
669 rmap->r_maddr);
670 if (!na)
671 fprintf(stderr,
672 "\tCouldn't resolve remote address!\n");
673 #endif
674 break;
675 }
676 }
677 return (na);
678 }
679
680 /*
681 * Quick check to see if rpcbind is up. Tries to connect over
682 * local transport.
683 */
684 static bool_t
685 __rpcbind_is_up()
686 {
687 struct netconfig *nconf;
688 struct sockaddr_un sun;
689 void *localhandle;
690 int sock;
691
692 nconf = NULL;
693 localhandle = setnetconfig();
694 while ((nconf = getnetconfig(localhandle)) != NULL) {
695 if (nconf->nc_protofmly != NULL &&
696 strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0)
697 break;
698 }
699 if (nconf == NULL)
700 return (FALSE);
701
702 endnetconfig(localhandle);
703
704 memset(&sun, 0, sizeof sun);
705 sock = _socket(AF_LOCAL, SOCK_STREAM, 0);
706 if (sock < 0)
707 return (FALSE);
708 sun.sun_family = AF_LOCAL;
709 strncpy(sun.sun_path, _PATH_RPCBINDSOCK, sizeof(sun.sun_path));
710 sun.sun_len = SUN_LEN(&sun);
711
712 if (_connect(sock, (struct sockaddr *)&sun, sun.sun_len) < 0) {
713 _close(sock);
714 return (FALSE);
715 }
716
717 _close(sock);
718 return (TRUE);
719 }
720
721 /*
722 * An internal function which optimizes rpcb_getaddr function. It also
723 * returns the client handle that it uses to contact the remote rpcbind.
724 *
725 * The algorithm used: If the transports is TCP or UDP, it first tries
726 * version 2 (portmap), 4 and then 3 (svr4). This order should be
727 * changed in the next OS release to 4, 2 and 3. We are assuming that by
728 * that time, version 4 would be available on many machines on the network.
729 * With this algorithm, we get performance as well as a plan for
730 * obsoleting version 2.
731 *
732 * For all other transports, the algorithm remains as 4 and then 3.
733 *
734 * XXX: Due to some problems with t_connect(), we do not reuse the same client
735 * handle for COTS cases and hence in these cases we do not return the
736 * client handle. This code will change if t_connect() ever
737 * starts working properly. Also look under clnt_vc.c.
738 */
739 struct netbuf *
740 __rpcb_findaddr_timed(program, version, nconf, host, clpp, tp)
741 rpcprog_t program;
742 rpcvers_t version;
743 const struct netconfig *nconf;
744 const char *host;
745 CLIENT **clpp;
746 struct timeval *tp;
747 {
748 static bool_t check_rpcbind = TRUE;
749 CLIENT *client = NULL;
750 RPCB parms;
751 enum clnt_stat clnt_st;
752 char *ua = NULL;
753 rpcvers_t vers;
754 struct netbuf *address = NULL;
755 rpcvers_t start_vers = RPCBVERS4;
756 struct netbuf servaddr;
757
758 /* parameter checking */
759 if (nconf == NULL) {
760 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
761 return (NULL);
762 }
763
764 parms.r_addr = NULL;
765
766 /*
767 * Use default total timeout if no timeout is specified.
768 */
769 if (tp == NULL)
770 tp = &tottimeout;
771
772 #ifdef PORTMAP
773 /* Try version 2 for TCP or UDP */
774 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
775 u_short port = 0;
776 struct netbuf remote;
777 rpcvers_t pmapvers = 2;
778 struct pmap pmapparms;
779
780 /*
781 * Try UDP only - there are some portmappers out
782 * there that use UDP only.
783 */
784 if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
785 struct netconfig *newnconf;
786
787 if ((newnconf = getnetconfigent("udp")) == NULL) {
788 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
789 return (NULL);
790 }
791 client = getclnthandle(host, newnconf, &parms.r_addr);
792 freenetconfigent(newnconf);
793 } else {
794 client = getclnthandle(host, nconf, &parms.r_addr);
795 }
796 if (client == NULL)
797 return (NULL);
798
799 /*
800 * Set version and retry timeout.
801 */
802 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
803 CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers);
804
805 pmapparms.pm_prog = program;
806 pmapparms.pm_vers = version;
807 pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ?
808 IPPROTO_UDP : IPPROTO_TCP;
809 pmapparms.pm_port = 0; /* not needed */
810 clnt_st = CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT,
811 (xdrproc_t) xdr_pmap, (caddr_t)(void *)&pmapparms,
812 (xdrproc_t) xdr_u_short, (caddr_t)(void *)&port,
813 *tp);
814 if (clnt_st != RPC_SUCCESS) {
815 if ((clnt_st == RPC_PROGVERSMISMATCH) ||
816 (clnt_st == RPC_PROGUNAVAIL))
817 goto try_rpcbind; /* Try different versions */
818 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
819 clnt_geterr(client, &rpc_createerr.cf_error);
820 goto error;
821 } else if (port == 0) {
822 address = NULL;
823 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
824 goto error;
825 }
826 port = htons(port);
827 CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote);
828 if (((address = (struct netbuf *)
829 malloc(sizeof (struct netbuf))) == NULL) ||
830 ((address->buf = (char *)
831 malloc(remote.len)) == NULL)) {
832 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
833 clnt_geterr(client, &rpc_createerr.cf_error);
834 if (address) {
835 free(address);
836 address = NULL;
837 }
838 goto error;
839 }
840 memcpy(address->buf, remote.buf, remote.len);
841 memcpy(&((char *)address->buf)[sizeof (short)],
842 (char *)(void *)&port, sizeof (short));
843 address->len = address->maxlen = remote.len;
844 goto done;
845 }
846 #endif /* PORTMAP */
847
848 try_rpcbind:
849 /*
850 * Check if rpcbind is up. This prevents needless delays when
851 * accessing applications such as the keyserver while booting
852 * disklessly.
853 */
854 if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
855 if (!__rpcbind_is_up()) {
856 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
857 rpc_createerr.cf_error.re_errno = 0;
858 goto error;
859 }
860 check_rpcbind = FALSE;
861 }
862
863 /*
864 * Now we try version 4 and then 3.
865 * We also send the remote system the address we used to
866 * contact it in case it can help to connect back with us
867 */
868 parms.r_prog = program;
869 parms.r_vers = version;
870 /*LINTED const castaway*/
871 parms.r_owner = (char *) &nullstring[0]; /* not needed; */
872 /* just for xdring */
873 parms.r_netid = nconf->nc_netid; /* not really needed */
874
875 /*
876 * If a COTS transport is being used, try getting address via CLTS
877 * transport. This works only with version 4.
878 */
879 if (nconf->nc_semantics == NC_TPI_COTS_ORD ||
880 nconf->nc_semantics == NC_TPI_COTS) {
881
882 void *handle;
883 struct netconfig *nconf_clts;
884 rpcb_entry_list_ptr relp = NULL;
885
886 if (client == NULL) {
887 /* This did not go through the above PORTMAP/TCP code */
888 if ((handle = __rpc_setconf("datagram_v")) != NULL) {
889 while ((nconf_clts = __rpc_getconf(handle))
890 != NULL) {
891 if (strcmp(nconf_clts->nc_protofmly,
892 nconf->nc_protofmly) != 0) {
893 continue;
894 }
895 client = getclnthandle(host, nconf_clts,
896 &parms.r_addr);
897 break;
898 }
899 __rpc_endconf(handle);
900 }
901 if (client == NULL)
902 goto regular_rpcbind; /* Go the regular way */
903 } else {
904 /* This is a UDP PORTMAP handle. Change to version 4 */
905 vers = RPCBVERS4;
906 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
907 }
908 /*
909 * We also send the remote system the address we used to
910 * contact it in case it can help it connect back with us
911 */
912 if (parms.r_addr == NULL) {
913 /*LINTED const castaway*/
914 parms.r_addr = (char *) &nullstring[0]; /* for XDRing */
915 }
916
917 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
918
919 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDRLIST,
920 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms,
921 (xdrproc_t) xdr_rpcb_entry_list_ptr,
922 (char *)(void *)&relp, *tp);
923 if (clnt_st == RPC_SUCCESS) {
924 if ((address = got_entry(relp, nconf)) != NULL) {
925 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr,
926 (char *)(void *)&relp);
927 CLNT_CONTROL(client, CLGET_SVC_ADDR,
928 (char *)(void *)&servaddr);
929 __rpc_fixup_addr(address, &servaddr);
930 goto done;
931 }
932 /* Entry not found for this transport */
933 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr,
934 (char *)(void *)&relp);
935 /*
936 * XXX: should have perhaps returned with error but
937 * since the remote machine might not always be able
938 * to send the address on all transports, we try the
939 * regular way with regular_rpcbind
940 */
941 goto regular_rpcbind;
942 } else if ((clnt_st == RPC_PROGVERSMISMATCH) ||
943 (clnt_st == RPC_PROGUNAVAIL)) {
944 start_vers = RPCBVERS; /* Try version 3 now */
945 goto regular_rpcbind; /* Try different versions */
946 } else {
947 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
948 clnt_geterr(client, &rpc_createerr.cf_error);
949 goto error;
950 }
951 }
952
953 regular_rpcbind:
954
955 /* Now the same transport is to be used to get the address */
956 if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) ||
957 (nconf->nc_semantics == NC_TPI_COTS))) {
958 /* A CLTS type of client - destroy it */
959 CLNT_DESTROY(client);
960 client = NULL;
961 }
962
963 if (client == NULL) {
964 client = getclnthandle(host, nconf, &parms.r_addr);
965 if (client == NULL) {
966 goto error;
967 }
968 }
969 if (parms.r_addr == NULL) {
970 /*LINTED const castaway*/
971 parms.r_addr = (char *) &nullstring[0];
972 }
973
974 /* First try from start_vers and then version 3 (RPCBVERS) */
975
976 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime);
977 for (vers = start_vers; vers >= RPCBVERS; vers--) {
978 /* Set the version */
979 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
980 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDR,
981 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms,
982 (xdrproc_t) xdr_wrapstring, (char *)(void *) &ua, *tp);
983 if (clnt_st == RPC_SUCCESS) {
984 if ((ua == NULL) || (ua[0] == 0)) {
985 /* address unknown */
986 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
987 goto error;
988 }
989 address = uaddr2taddr(nconf, ua);
990 #ifdef ND_DEBUG
991 fprintf(stderr, "\tRemote address is [%s]\n", ua);
992 if (!address)
993 fprintf(stderr,
994 "\tCouldn't resolve remote address!\n");
995 #endif
996 xdr_free((xdrproc_t)xdr_wrapstring,
997 (char *)(void *)&ua);
998
999 if (! address) {
1000 /* We don't know about your universal address */
1001 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
1002 goto error;
1003 }
1004 CLNT_CONTROL(client, CLGET_SVC_ADDR,
1005 (char *)(void *)&servaddr);
1006 __rpc_fixup_addr(address, &servaddr);
1007 goto done;
1008 } else if (clnt_st == RPC_PROGVERSMISMATCH) {
1009 struct rpc_err rpcerr;
1010
1011 clnt_geterr(client, &rpcerr);
1012 if (rpcerr.re_vers.low > RPCBVERS4)
1013 goto error; /* a new version, can't handle */
1014 } else if (clnt_st != RPC_PROGUNAVAIL) {
1015 /* Cant handle this error */
1016 rpc_createerr.cf_stat = clnt_st;
1017 clnt_geterr(client, &rpc_createerr.cf_error);
1018 goto error;
1019 }
1020 }
1021
1022 error:
1023 if (client) {
1024 CLNT_DESTROY(client);
1025 client = NULL;
1026 }
1027 done:
1028 if (nconf->nc_semantics != NC_TPI_CLTS) {
1029 /* This client is the connectionless one */
1030 if (client) {
1031 CLNT_DESTROY(client);
1032 client = NULL;
1033 }
1034 }
1035 if (clpp) {
1036 *clpp = client;
1037 } else if (client) {
1038 CLNT_DESTROY(client);
1039 }
1040 if (parms.r_addr != NULL && parms.r_addr != nullstring)
1041 free(parms.r_addr);
1042 return (address);
1043 }
1044
1045
1046 /*
1047 * Find the mapped address for program, version.
1048 * Calls the rpcbind service remotely to do the lookup.
1049 * Uses the transport specified in nconf.
1050 * Returns FALSE (0) if no map exists, else returns 1.
1051 *
1052 * Assuming that the address is all properly allocated
1053 */
1054 int
1055 rpcb_getaddr(program, version, nconf, address, host)
1056 rpcprog_t program;
1057 rpcvers_t version;
1058 const struct netconfig *nconf;
1059 struct netbuf *address;
1060 const char *host;
1061 {
1062 struct netbuf *na;
1063
1064 if ((na = __rpcb_findaddr_timed(program, version,
1065 (struct netconfig *) nconf, (char *) host,
1066 (CLIENT **) NULL, (struct timeval *) NULL)) == NULL)
1067 return (FALSE);
1068
1069 if (na->len > address->maxlen) {
1070 /* Too long address */
1071 free(na->buf);
1072 free(na);
1073 rpc_createerr.cf_stat = RPC_FAILED;
1074 return (FALSE);
1075 }
1076 memcpy(address->buf, na->buf, (size_t)na->len);
1077 address->len = na->len;
1078 free(na->buf);
1079 free(na);
1080 return (TRUE);
1081 }
1082
1083 /*
1084 * Get a copy of the current maps.
1085 * Calls the rpcbind service remotely to get the maps.
1086 *
1087 * It returns only a list of the services
1088 * It returns NULL on failure.
1089 */
1090 rpcblist *
1091 rpcb_getmaps(nconf, host)
1092 const struct netconfig *nconf;
1093 const char *host;
1094 {
1095 rpcblist_ptr head = NULL;
1096 CLIENT *client;
1097 enum clnt_stat clnt_st;
1098 rpcvers_t vers = 0;
1099
1100 client = getclnthandle(host, nconf, NULL);
1101 if (client == NULL) {
1102 return (head);
1103 }
1104 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP,
1105 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr,
1106 (char *)(void *)&head, tottimeout);
1107 if (clnt_st == RPC_SUCCESS)
1108 goto done;
1109
1110 if ((clnt_st != RPC_PROGVERSMISMATCH) &&
1111 (clnt_st != RPC_PROGUNAVAIL)) {
1112 rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1113 clnt_geterr(client, &rpc_createerr.cf_error);
1114 goto done;
1115 }
1116
1117 /* fall back to earlier version */
1118 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers);
1119 if (vers == RPCBVERS4) {
1120 vers = RPCBVERS;
1121 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
1122 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP,
1123 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr,
1124 (char *)(void *)&head, tottimeout) == RPC_SUCCESS)
1125 goto done;
1126 }
1127 rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1128 clnt_geterr(client, &rpc_createerr.cf_error);
1129
1130 done:
1131 CLNT_DESTROY(client);
1132 return (head);
1133 }
1134
1135 /*
1136 * rpcbinder remote-call-service interface.
1137 * This routine is used to call the rpcbind remote call service
1138 * which will look up a service program in the address maps, and then
1139 * remotely call that routine with the given parameters. This allows
1140 * programs to do a lookup and call in one step.
1141 */
1142 enum clnt_stat
1143 rpcb_rmtcall(nconf, host, prog, vers, proc, xdrargs, argsp,
1144 xdrres, resp, tout, addr_ptr)
1145 const struct netconfig *nconf; /* Netconfig structure */
1146 const char *host; /* Remote host name */
1147 rpcprog_t prog;
1148 rpcvers_t vers;
1149 rpcproc_t proc; /* Remote proc identifiers */
1150 xdrproc_t xdrargs, xdrres; /* XDR routines */
1151 caddr_t argsp, resp; /* Argument and Result */
1152 struct timeval tout; /* Timeout value for this call */
1153 const struct netbuf *addr_ptr; /* Preallocated netbuf address */
1154 {
1155 CLIENT *client;
1156 enum clnt_stat stat;
1157 struct r_rpcb_rmtcallargs a;
1158 struct r_rpcb_rmtcallres r;
1159 rpcvers_t rpcb_vers;
1160
1161 stat = 0;
1162 client = getclnthandle(host, nconf, NULL);
1163 if (client == NULL) {
1164 return (RPC_FAILED);
1165 }
1166 /*LINTED const castaway*/
1167 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&rmttimeout);
1168 a.prog = prog;
1169 a.vers = vers;
1170 a.proc = proc;
1171 a.args.args_val = argsp;
1172 a.xdr_args = xdrargs;
1173 r.addr = NULL;
1174 r.results.results_val = resp;
1175 r.xdr_res = xdrres;
1176
1177 for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) {
1178 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&rpcb_vers);
1179 stat = CLNT_CALL(client, (rpcproc_t)RPCBPROC_CALLIT,
1180 (xdrproc_t) xdr_rpcb_rmtcallargs, (char *)(void *)&a,
1181 (xdrproc_t) xdr_rpcb_rmtcallres, (char *)(void *)&r, tout);
1182 if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) {
1183 struct netbuf *na;
1184 /*LINTED const castaway*/
1185 na = uaddr2taddr((struct netconfig *) nconf, r.addr);
1186 if (!na) {
1187 stat = RPC_N2AXLATEFAILURE;
1188 /*LINTED const castaway*/
1189 ((struct netbuf *) addr_ptr)->len = 0;
1190 goto error;
1191 }
1192 if (na->len > addr_ptr->maxlen) {
1193 /* Too long address */
1194 stat = RPC_FAILED; /* XXX A better error no */
1195 free(na->buf);
1196 free(na);
1197 /*LINTED const castaway*/
1198 ((struct netbuf *) addr_ptr)->len = 0;
1199 goto error;
1200 }
1201 memcpy(addr_ptr->buf, na->buf, (size_t)na->len);
1202 /*LINTED const castaway*/
1203 ((struct netbuf *)addr_ptr)->len = na->len;
1204 free(na->buf);
1205 free(na);
1206 break;
1207 } else if ((stat != RPC_PROGVERSMISMATCH) &&
1208 (stat != RPC_PROGUNAVAIL)) {
1209 goto error;
1210 }
1211 }
1212 error:
1213 CLNT_DESTROY(client);
1214 if (r.addr)
1215 xdr_free((xdrproc_t) xdr_wrapstring, (char *)(void *)&r.addr);
1216 return (stat);
1217 }
1218
1219 /*
1220 * Gets the time on the remote host.
1221 * Returns 1 if succeeds else 0.
1222 */
1223 bool_t
1224 rpcb_gettime(host, timep)
1225 const char *host;
1226 time_t *timep;
1227 {
1228 CLIENT *client = NULL;
1229 void *handle;
1230 struct netconfig *nconf;
1231 rpcvers_t vers;
1232 enum clnt_stat st;
1233
1234
1235 if ((host == NULL) || (host[0] == 0)) {
1236 time(timep);
1237 return (TRUE);
1238 }
1239
1240 if ((handle = __rpc_setconf("netpath")) == NULL) {
1241 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1242 return (FALSE);
1243 }
1244 rpc_createerr.cf_stat = RPC_SUCCESS;
1245 while (client == NULL) {
1246 if ((nconf = __rpc_getconf(handle)) == NULL) {
1247 if (rpc_createerr.cf_stat == RPC_SUCCESS)
1248 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1249 break;
1250 }
1251 client = getclnthandle(host, nconf, NULL);
1252 if (client)
1253 break;
1254 }
1255 __rpc_endconf(handle);
1256 if (client == (CLIENT *) NULL) {
1257 return (FALSE);
1258 }
1259
1260 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME,
1261 (xdrproc_t) xdr_void, NULL,
1262 (xdrproc_t) xdr_int, (char *)(void *)timep, tottimeout);
1263
1264 if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) {
1265 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers);
1266 if (vers == RPCBVERS4) {
1267 /* fall back to earlier version */
1268 vers = RPCBVERS;
1269 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers);
1270 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME,
1271 (xdrproc_t) xdr_void, NULL,
1272 (xdrproc_t) xdr_int, (char *)(void *)timep,
1273 tottimeout);
1274 }
1275 }
1276 CLNT_DESTROY(client);
1277 return (st == RPC_SUCCESS? TRUE: FALSE);
1278 }
1279
1280 static bool_t
1281 xdr_netbuf(XDR *xdrs, struct netbuf *objp)
1282 {
1283 bool_t dummy;
1284 void **pp;
1285
1286 if (!xdr_uint32_t(xdrs, (uint32_t *) &objp->maxlen)) {
1287 return (FALSE);
1288 }
1289 pp = &objp->buf;
1290 dummy = xdr_bytes(xdrs, (char **) pp,
1291 (u_int *)&(objp->len), objp->maxlen);
1292 return (dummy);
1293 }
1294
1295 /*
1296 * Converts taddr to universal address. This routine should never
1297 * really be called because local n2a libraries are always provided.
1298 */
1299 char *
1300 rpcb_taddr2uaddr(struct netconfig *nconf, struct netbuf *taddr)
1301 {
1302 CLIENT *client;
1303 char *uaddr = NULL;
1304
1305
1306 /* parameter checking */
1307 if (nconf == NULL) {
1308 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1309 return (NULL);
1310 }
1311 if (taddr == NULL) {
1312 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
1313 return (NULL);
1314 }
1315 client = local_rpcb();
1316 if (! client) {
1317 return (NULL);
1318 }
1319
1320 CLNT_CALL(client, (rpcproc_t)RPCBPROC_TADDR2UADDR,
1321 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr,
1322 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, tottimeout);
1323 CLNT_DESTROY(client);
1324 return (uaddr);
1325 }
1326
1327 /*
1328 * Converts universal address to netbuf. This routine should never
1329 * really be called because local n2a libraries are always provided.
1330 */
1331 struct netbuf *
1332 rpcb_uaddr2taddr(struct netconfig *nconf, char *uaddr)
1333 {
1334 CLIENT *client;
1335 struct netbuf *taddr;
1336
1337
1338 /* parameter checking */
1339 if (nconf == NULL) {
1340 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1341 return (NULL);
1342 }
1343 if (uaddr == NULL) {
1344 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
1345 return (NULL);
1346 }
1347 client = local_rpcb();
1348 if (! client) {
1349 return (NULL);
1350 }
1351
1352 taddr = (struct netbuf *)malloc(sizeof (struct netbuf), M_RPC, M_WAITOK|M_ZERO);
1353 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_UADDR2TADDR,
1354 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr,
1355 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr,
1356 tottimeout) != RPC_SUCCESS) {
1357 free(taddr);
1358 taddr = NULL;
1359 }
1360 CLNT_DESTROY(client);
1361 return (taddr);
1362 }
1363
1364 #endif
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