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/* 34 * rpcb_clnt.c 35 * interface to rpcbind rpc service. 36 */ 37 38#include "namespace.h" 39#include "reentrant.h" 40#include <sys/types.h> 41#include <sys/socket.h> 42#include <sys/un.h> 43#include <sys/utsname.h> 44#include <rpc/rpc.h> 45#include <rpc/rpcb_prot.h> 46#include <rpc/nettype.h> 47#include <netconfig.h> 48#ifdef PORTMAP 49#include <netinet/in.h> /* FOR IPPROTO_TCP/UDP definitions */ 50#include <rpc/pmap_prot.h> 51#endif /* PORTMAP */ 52#include <stdio.h> 53#include <errno.h> 54#include <stdlib.h> 55#include <string.h> 56#include <unistd.h> 57#include <netdb.h> 58#include <syslog.h> 59#include "un-namespace.h" 60 61#include "rpc_com.h" 62#include "mt_misc.h" 63 64static struct timeval tottimeout = { 60, 0 }; 65static const struct timeval rmttimeout = { 3, 0 }; 66static struct timeval rpcbrmttime = { 15, 0 }; 67 68extern bool_t xdr_wrapstring(XDR *, char **); 69 70static const char nullstring[] = "\000"; 71 72#define CACHESIZE 6 73 74struct address_cache { 75 char *ac_host; 76 char *ac_netid; 77 char *ac_uaddr; 78 struct netbuf *ac_taddr; 79 struct address_cache *ac_next; 80}; 81 82static struct address_cache *front; 83static int cachesize; 84 85#define CLCR_GET_RPCB_TIMEOUT 1 86#define CLCR_SET_RPCB_TIMEOUT 2 87 88 89extern int __rpc_lowvers; 90 91static struct address_cache *check_cache(const char *, const char *); 92static void delete_cache(struct netbuf *); 93static void add_cache(const char *, const char *, struct netbuf *, char *); 94static CLIENT *getclnthandle(const char *, const struct netconfig *, char **); 95static CLIENT *local_rpcb(void); 96static struct netbuf *got_entry(rpcb_entry_list_ptr, const struct netconfig *); 97 98/* 99 * This routine adjusts the timeout used for calls to the remote rpcbind. 100 * Also, this routine can be used to set the use of portmapper version 2 101 * only when doing rpc_broadcasts 102 * These are private routines that may not be provided in future releases. 103 */ 104bool_t 105__rpc_control(int request, void *info) 106{ 107 switch (request) { 108 case CLCR_GET_RPCB_TIMEOUT: 109 *(struct timeval *)info = tottimeout; 110 break; 111 case CLCR_SET_RPCB_TIMEOUT: 112 tottimeout = *(struct timeval *)info; 113 break; 114 case CLCR_SET_LOWVERS: 115 __rpc_lowvers = *(int *)info; 116 break; 117 case CLCR_GET_LOWVERS: 118 *(int *)info = __rpc_lowvers; 119 break; 120 default: 121 return (FALSE); 122 } 123 return (TRUE); 124} 125 126/* 127 * It might seem that a reader/writer lock would be more reasonable here. 128 * However because getclnthandle(), the only user of the cache functions, 129 * may do a delete_cache() operation if a check_cache() fails to return an 130 * address useful to clnt_tli_create(), we may as well use a mutex. 131 */ 132/* 133 * As it turns out, if the cache lock is *not* a reader/writer lock, we will 134 * block all clnt_create's if we are trying to connect to a host that's down, 135 * since the lock will be held all during that time. 136 */ 137 138/* 139 * The routines check_cache(), add_cache(), delete_cache() manage the 140 * cache of rpcbind addresses for (host, netid). 141 */ 142 143static struct address_cache * 144check_cache(const char *host, const char *netid) 145{ 146 struct address_cache *cptr; 147 148 /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 149 150 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 151 if (!strcmp(cptr->ac_host, host) && 152 !strcmp(cptr->ac_netid, netid)) { 153#ifdef ND_DEBUG 154 fprintf(stderr, "Found cache entry for %s: %s\n", 155 host, netid); 156#endif 157 return (cptr); 158 } 159 } 160 return ((struct address_cache *) NULL); 161} 162 163static void 164delete_cache(struct netbuf *addr) 165{ 166 struct address_cache *cptr, *prevptr = NULL; 167 168 /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 169 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 170 if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) { 171 free(cptr->ac_host); 172 free(cptr->ac_netid); 173 free(cptr->ac_taddr->buf); 174 free(cptr->ac_taddr); 175 free(cptr->ac_uaddr); 176 if (prevptr) 177 prevptr->ac_next = cptr->ac_next; 178 else 179 front = cptr->ac_next; 180 free(cptr); 181 cachesize--; 182 break; 183 } 184 prevptr = cptr; 185 } 186} 187 188static void 189add_cache(const char *host, const char *netid, struct netbuf *taddr, 190 char *uaddr) 191{ 192 struct address_cache *ad_cache, *cptr, *prevptr; 193 194 ad_cache = (struct address_cache *) 195 malloc(sizeof (struct address_cache)); 196 if (!ad_cache) { 197 return; 198 } 199 ad_cache->ac_host = strdup(host); 200 ad_cache->ac_netid = strdup(netid); 201 ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL; 202 ad_cache->ac_taddr = (struct netbuf *)malloc(sizeof (struct netbuf)); 203 if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr || 204 (uaddr && !ad_cache->ac_uaddr)) { 205 goto out; 206 } 207 ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len; 208 ad_cache->ac_taddr->buf = (char *) malloc(taddr->len); 209 if (ad_cache->ac_taddr->buf == NULL) { 210out: 211 free(ad_cache->ac_host); 212 free(ad_cache->ac_netid); 213 free(ad_cache->ac_uaddr); 214 free(ad_cache->ac_taddr); 215 free(ad_cache); 216 return; 217 } 218 memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len); 219#ifdef ND_DEBUG 220 fprintf(stderr, "Added to cache: %s : %s\n", host, netid); 221#endif 222 223/* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */ 224 225 rwlock_wrlock(&rpcbaddr_cache_lock); 226 if (cachesize < CACHESIZE) { 227 ad_cache->ac_next = front; 228 front = ad_cache; 229 cachesize++; 230 } else { 231 /* Free the last entry */ 232 cptr = front; 233 prevptr = NULL; 234 while (cptr->ac_next) { 235 prevptr = cptr; 236 cptr = cptr->ac_next; 237 } 238 239#ifdef ND_DEBUG 240 fprintf(stderr, "Deleted from cache: %s : %s\n", 241 cptr->ac_host, cptr->ac_netid); 242#endif 243 free(cptr->ac_host); 244 free(cptr->ac_netid); 245 free(cptr->ac_taddr->buf); 246 free(cptr->ac_taddr); 247 free(cptr->ac_uaddr); 248 249 if (prevptr) { 250 prevptr->ac_next = NULL; 251 ad_cache->ac_next = front; 252 front = ad_cache; 253 } else { 254 front = ad_cache; 255 ad_cache->ac_next = NULL; 256 } 257 free(cptr); 258 } 259 rwlock_unlock(&rpcbaddr_cache_lock); 260} 261 262/* 263 * This routine will return a client handle that is connected to the 264 * rpcbind. If targaddr is non-NULL, the "universal address" of the 265 * host will be stored in *targaddr; the caller is responsible for 266 * freeing this string. 267 * On error, returns NULL and free's everything. 268 */ 269static CLIENT * 270getclnthandle(const char *host, const struct netconfig *nconf, char **targaddr) 271{ 272 CLIENT *client; 273 struct netbuf *addr, taddr; 274 struct netbuf addr_to_delete; 275 struct __rpc_sockinfo si; 276 struct addrinfo hints, *res, *tres; 277 struct address_cache *ad_cache; 278 char *tmpaddr; 279 280/* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */ 281 282 /* Get the address of the rpcbind. Check cache first */ 283 client = NULL; 284 addr_to_delete.len = 0; 285 rwlock_rdlock(&rpcbaddr_cache_lock); 286 ad_cache = NULL; 287 if (host != NULL) 288 ad_cache = check_cache(host, nconf->nc_netid); 289 if (ad_cache != NULL) { 290 addr = ad_cache->ac_taddr; 291 client = clnt_tli_create(RPC_ANYFD, nconf, addr, 292 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 293 if (client != NULL) { 294 if (targaddr) 295 *targaddr = strdup(ad_cache->ac_uaddr); 296 rwlock_unlock(&rpcbaddr_cache_lock); 297 return (client); 298 } 299 addr_to_delete.len = addr->len; 300 addr_to_delete.buf = (char *)malloc(addr->len); 301 if (addr_to_delete.buf == NULL) { 302 addr_to_delete.len = 0; 303 } else { 304 memcpy(addr_to_delete.buf, addr->buf, addr->len); 305 } 306 } 307 rwlock_unlock(&rpcbaddr_cache_lock); 308 if (addr_to_delete.len != 0) { 309 /* 310 * Assume this may be due to cache data being 311 * outdated 312 */ 313 rwlock_wrlock(&rpcbaddr_cache_lock); 314 delete_cache(&addr_to_delete); 315 rwlock_unlock(&rpcbaddr_cache_lock); 316 free(addr_to_delete.buf); 317 } 318 if (!__rpc_nconf2sockinfo(nconf, &si)) { 319 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 320 return NULL; 321 } 322 323 memset(&hints, 0, sizeof hints); 324 hints.ai_family = si.si_af; 325 hints.ai_socktype = si.si_socktype; 326 hints.ai_protocol = si.si_proto; 327 328#ifdef CLNT_DEBUG 329 printf("trying netid %s family %d proto %d socktype %d\n", 330 nconf->nc_netid, si.si_af, si.si_proto, si.si_socktype); 331#endif 332 333 if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 334 client = local_rpcb(); 335 if (! client) { 336#ifdef ND_DEBUG 337 clnt_pcreateerror("rpcbind clnt interface"); 338#endif 339 return (NULL); 340 } else { 341 struct sockaddr_un sun; 342 if (targaddr) { 343 *targaddr = malloc(sizeof(sun.sun_path)); 344 if (*targaddr == NULL) { 345 CLNT_DESTROY(client); 346 return (NULL); 347 } 348 strncpy(*targaddr, _PATH_RPCBINDSOCK, 349 sizeof(sun.sun_path)); 350 } 351 return (client); 352 } 353 } else { 354 if (getaddrinfo(host, "sunrpc", &hints, &res) != 0) { 355 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 356 return NULL; 357 } 358 } 359 360 for (tres = res; tres != NULL; tres = tres->ai_next) { 361 taddr.buf = tres->ai_addr; 362 taddr.len = taddr.maxlen = tres->ai_addrlen; 363 364#ifdef ND_DEBUG 365 { 366 char *ua; 367 368 ua = taddr2uaddr(nconf, &taddr); 369 fprintf(stderr, "Got it [%s]\n", ua); 370 free(ua); 371 } 372#endif 373 374#ifdef ND_DEBUG 375 { 376 int i; 377 378 fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n", 379 taddr.len, taddr.maxlen); 380 fprintf(stderr, "\tAddress is "); 381 for (i = 0; i < taddr.len; i++) 382 fprintf(stderr, "%u.", ((char *)(taddr.buf))[i]); 383 fprintf(stderr, "\n"); 384 } 385#endif 386 client = clnt_tli_create(RPC_ANYFD, nconf, &taddr, 387 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 388#ifdef ND_DEBUG 389 if (! client) { 390 clnt_pcreateerror("rpcbind clnt interface"); 391 } 392#endif 393 394 if (client) { 395 tmpaddr = targaddr ? taddr2uaddr(nconf, &taddr) : NULL; 396 add_cache(host, nconf->nc_netid, &taddr, tmpaddr); 397 if (targaddr) 398 *targaddr = tmpaddr; 399 break; 400 } 401 } 402 if (res) 403 freeaddrinfo(res); 404 return (client); 405} 406 407/* XXX */ 408#define IN4_LOCALHOST_STRING "127.0.0.1" 409#define IN6_LOCALHOST_STRING "::1" 410 411/* 412 * This routine will return a client handle that is connected to the local 413 * rpcbind. Returns NULL on error and free's everything. 414 */ 415static CLIENT * 416local_rpcb(void) 417{ 418 CLIENT *client; 419 static struct netconfig *loopnconf; 420 static char *hostname; 421 int sock; 422 size_t tsize; 423 struct netbuf nbuf; 424 struct sockaddr_un sun; 425 426 /* 427 * Try connecting to the local rpcbind through a local socket 428 * first. If this doesn't work, try all transports defined in 429 * the netconfig file. 430 */ 431 memset(&sun, 0, sizeof sun); 432 sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 433 if (sock < 0) 434 goto try_nconf; 435 sun.sun_family = AF_LOCAL; 436 strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 437 nbuf.len = sun.sun_len = SUN_LEN(&sun); 438 nbuf.maxlen = sizeof (struct sockaddr_un); 439 nbuf.buf = &sun; 440 441 tsize = __rpc_get_t_size(AF_LOCAL, 0, 0); 442 client = clnt_vc_create(sock, &nbuf, (rpcprog_t)RPCBPROG, 443 (rpcvers_t)RPCBVERS, tsize, tsize); 444 445 if (client != NULL) { 446 /* Mark the socket to be closed in destructor */ 447 (void) CLNT_CONTROL(client, CLSET_FD_CLOSE, NULL); 448 return client; 449 } 450 451 /* Nobody needs this socket anymore; free the descriptor. */ 452 _close(sock); 453 454try_nconf: 455 456/* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */ 457 mutex_lock(&loopnconf_lock); 458 if (loopnconf == NULL) { 459 struct netconfig *nconf, *tmpnconf = NULL; 460 void *nc_handle; 461 int fd; 462 463 nc_handle = setnetconfig(); 464 if (nc_handle == NULL) { 465 /* fails to open netconfig file */ 466 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 467 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 468 mutex_unlock(&loopnconf_lock); 469 return (NULL); 470 } 471 while ((nconf = getnetconfig(nc_handle)) != NULL) { 472#ifdef INET6 473 if ((strcmp(nconf->nc_protofmly, NC_INET6) == 0 || 474#else 475 if (( 476#endif 477 strcmp(nconf->nc_protofmly, NC_INET) == 0) && 478 (nconf->nc_semantics == NC_TPI_COTS || 479 nconf->nc_semantics == NC_TPI_COTS_ORD)) { 480 fd = __rpc_nconf2fd(nconf); 481 /* 482 * Can't create a socket, assume that 483 * this family isn't configured in the kernel. 484 */ 485 if (fd < 0) 486 continue; 487 _close(fd); 488 tmpnconf = nconf; 489 if (!strcmp(nconf->nc_protofmly, NC_INET)) 490 hostname = IN4_LOCALHOST_STRING; 491 else 492 hostname = IN6_LOCALHOST_STRING; 493 } 494 } 495 if (tmpnconf == NULL) { 496 endnetconfig(nc_handle); 497 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 498 mutex_unlock(&loopnconf_lock); 499 return (NULL); 500 } 501 loopnconf = getnetconfigent(tmpnconf->nc_netid); 502 /* loopnconf is never freed */ 503 endnetconfig(nc_handle); 504 } 505 mutex_unlock(&loopnconf_lock); 506 client = getclnthandle(hostname, loopnconf, NULL); 507 return (client); 508} 509 510/* 511 * Set a mapping between program, version and address. 512 * Calls the rpcbind service to do the mapping. 513 * 514 * nconf - Network structure of transport 515 * address - Services netconfig address 516 */ 517bool_t 518rpcb_set(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf, 519 const struct netbuf *address) 520{ 521 CLIENT *client; 522 bool_t rslt = FALSE; 523 RPCB parms; 524 char uidbuf[32]; 525 526 /* parameter checking */ 527 if (nconf == NULL) { 528 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 529 return (FALSE); 530 } 531 if (address == NULL) { 532 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 533 return (FALSE); 534 } 535 client = local_rpcb(); 536 if (! client) { 537 return (FALSE); 538 } 539 540 /* convert to universal */ 541 /*LINTED const castaway*/ 542 parms.r_addr = taddr2uaddr((struct netconfig *) nconf, 543 (struct netbuf *)address); 544 if (!parms.r_addr) { 545 CLNT_DESTROY(client); 546 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 547 return (FALSE); /* no universal address */ 548 } 549 parms.r_prog = program; 550 parms.r_vers = version; 551 parms.r_netid = nconf->nc_netid; 552 /* 553 * Though uid is not being used directly, we still send it for 554 * completeness. For non-unix platforms, perhaps some other 555 * string or an empty string can be sent. 556 */ 557 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 558 parms.r_owner = uidbuf; 559 560 CLNT_CALL(client, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb, 561 (char *)(void *)&parms, (xdrproc_t) xdr_bool, 562 (char *)(void *)&rslt, tottimeout); 563 564 CLNT_DESTROY(client); 565 free(parms.r_addr); 566 return (rslt); 567} 568 569/* 570 * Remove the mapping between program, version and netbuf address. 571 * Calls the rpcbind service to do the un-mapping. 572 * If netbuf is NULL, unset for all the transports, otherwise unset 573 * only for the given transport. 574 */ 575bool_t 576rpcb_unset(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf) 577{ 578 CLIENT *client; 579 bool_t rslt = FALSE; 580 RPCB parms; 581 char uidbuf[32]; 582 583 client = local_rpcb(); 584 if (! client) { 585 return (FALSE); 586 } 587 588 parms.r_prog = program; 589 parms.r_vers = version; 590 if (nconf) 591 parms.r_netid = nconf->nc_netid; 592 else { 593 /*LINTED const castaway*/ 594 parms.r_netid = (char *) &nullstring[0]; /* unsets all */ 595 } 596 /*LINTED const castaway*/ 597 parms.r_addr = (char *) &nullstring[0]; 598 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 599 parms.r_owner = uidbuf; 600 601 CLNT_CALL(client, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb, 602 (char *)(void *)&parms, (xdrproc_t) xdr_bool, 603 (char *)(void *)&rslt, tottimeout); 604 605 CLNT_DESTROY(client); 606 return (rslt); 607} 608 609/* 610 * From the merged list, find the appropriate entry 611 */ 612static struct netbuf * 613got_entry(rpcb_entry_list_ptr relp, const struct netconfig *nconf) 614{ 615 struct netbuf *na = NULL; 616 rpcb_entry_list_ptr sp; 617 rpcb_entry *rmap; 618 619 for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) { 620 rmap = &sp->rpcb_entry_map; 621 if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) && 622 (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) && 623 (nconf->nc_semantics == rmap->r_nc_semantics) && 624 (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != 0)) { 625 na = uaddr2taddr(nconf, rmap->r_maddr); 626#ifdef ND_DEBUG 627 fprintf(stderr, "\tRemote address is [%s].\n", 628 rmap->r_maddr); 629 if (!na) 630 fprintf(stderr, 631 "\tCouldn't resolve remote address!\n"); 632#endif 633 break; 634 } 635 } 636 return (na); 637} 638 639/* 640 * Quick check to see if rpcbind is up. Tries to connect over 641 * local transport. 642 */ 643static bool_t 644__rpcbind_is_up(void) 645{ 646 struct netconfig *nconf; 647 struct sockaddr_un sun; 648 void *localhandle; 649 int sock; 650 651 nconf = NULL; 652 localhandle = setnetconfig(); 653 while ((nconf = getnetconfig(localhandle)) != NULL) { 654 if (nconf->nc_protofmly != NULL && 655 strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) 656 break; 657 } 658 endnetconfig(localhandle); 659 660 if (nconf == NULL) 661 return (FALSE); 662 663 memset(&sun, 0, sizeof sun); 664 sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 665 if (sock < 0) 666 return (FALSE); 667 sun.sun_family = AF_LOCAL; 668 strncpy(sun.sun_path, _PATH_RPCBINDSOCK, sizeof(sun.sun_path)); 669 sun.sun_len = SUN_LEN(&sun); 670 671 if (_connect(sock, (struct sockaddr *)&sun, sun.sun_len) < 0) { 672 _close(sock); 673 return (FALSE); 674 } 675 676 _close(sock); 677 return (TRUE); 678} 679 680/* 681 * An internal function which optimizes rpcb_getaddr function. It also 682 * returns the client handle that it uses to contact the remote rpcbind. 683 * 684 * The algorithm used: If the transports is TCP or UDP, it first tries 685 * version 2 (portmap), 4 and then 3 (svr4). This order should be 686 * changed in the next OS release to 4, 2 and 3. We are assuming that by 687 * that time, version 4 would be available on many machines on the network. 688 * With this algorithm, we get performance as well as a plan for 689 * obsoleting version 2. 690 * 691 * For all other transports, the algorithm remains as 4 and then 3. 692 * 693 * XXX: Due to some problems with t_connect(), we do not reuse the same client 694 * handle for COTS cases and hence in these cases we do not return the 695 * client handle. This code will change if t_connect() ever 696 * starts working properly. Also look under clnt_vc.c. 697 */ 698struct netbuf * 699__rpcb_findaddr_timed(rpcprog_t program, rpcvers_t version, 700 const struct netconfig *nconf, const char *host, 701 CLIENT **clpp, struct timeval *tp) 702{ 703 static bool_t check_rpcbind = TRUE; 704 CLIENT *client = NULL; 705 RPCB parms; 706 enum clnt_stat clnt_st; 707 char *ua = NULL; 708 rpcvers_t vers; 709 struct netbuf *address = NULL; 710 rpcvers_t start_vers = RPCBVERS4; 711 struct netbuf servaddr; 712 713 /* parameter checking */ 714 if (nconf == NULL) { 715 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 716 return (NULL); 717 } 718 719 parms.r_addr = NULL; 720 721 /* 722 * Use default total timeout if no timeout is specified. 723 */ 724 if (tp == NULL) 725 tp = &tottimeout; 726 727#ifdef PORTMAP 728 /* Try version 2 for TCP or UDP */ 729 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) { 730 u_short port = 0; 731 struct netbuf remote; 732 rpcvers_t pmapvers = 2; 733 struct pmap pmapparms; 734 735 /* 736 * The comment below is now very old, having 737 * been committed to FreeBSD during an import 738 * from NetBSD in 2001. I do not believe there 739 * will still be any rpcbind servers that do 740 * UDP only and, since Azure requires use of 741 * TCP for NFSv3 mounts, comment this out 742 * so that NFSv3 mounts on Azure can work. 743 */ 744#ifdef notnow 745 /* 746 * Try UDP only - there are some portmappers out 747 * there that use UDP only. 748 */ 749 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 750 struct netconfig *newnconf; 751 752 if ((newnconf = getnetconfigent("udp")) == NULL) { 753 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 754 return (NULL); 755 } 756 client = getclnthandle(host, newnconf, &parms.r_addr); 757 freenetconfigent(newnconf); 758 } else 759#endif 760 client = getclnthandle(host, nconf, &parms.r_addr); 761 if (client == NULL) 762 return (NULL); 763 764 /* 765 * Set version and retry timeout. 766 */ 767 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 768 CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers); 769 770 pmapparms.pm_prog = program; 771 pmapparms.pm_vers = version; 772 pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ? 773 IPPROTO_UDP : IPPROTO_TCP; 774 pmapparms.pm_port = 0; /* not needed */ 775 clnt_st = CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 776 (xdrproc_t) xdr_pmap, (caddr_t)(void *)&pmapparms, 777 (xdrproc_t) xdr_u_short, (caddr_t)(void *)&port, 778 *tp); 779 if (clnt_st != RPC_SUCCESS) { 780 if ((clnt_st == RPC_PROGVERSMISMATCH) || 781 (clnt_st == RPC_PROGUNAVAIL)) 782 goto try_rpcbind; /* Try different versions */ 783 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 784 clnt_geterr(client, &rpc_createerr.cf_error); 785 goto error; 786 } else if (port == 0) { 787 address = NULL; 788 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 789 goto error; 790 } 791 port = htons(port); 792 CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote); 793 if (((address = (struct netbuf *) 794 malloc(sizeof (struct netbuf))) == NULL) || 795 ((address->buf = (char *) 796 malloc(remote.len)) == NULL)) { 797 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 798 clnt_geterr(client, &rpc_createerr.cf_error); 799 free(address); 800 address = NULL; 801 goto error; 802 } 803 memcpy(address->buf, remote.buf, remote.len); 804 memcpy(&((char *)address->buf)[sizeof (short)], 805 (char *)(void *)&port, sizeof (short)); 806 address->len = address->maxlen = remote.len; 807 goto done; 808 } 809#endif /* PORTMAP */ 810 811try_rpcbind: 812 /* 813 * Check if rpcbind is up. This prevents needless delays when 814 * accessing applications such as the keyserver while booting 815 * disklessly. 816 */ 817 if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 818 if (!__rpcbind_is_up()) { 819 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 820 rpc_createerr.cf_error.re_errno = 0; 821 goto error; 822 } 823 check_rpcbind = FALSE; 824 } 825 826 /* 827 * Now we try version 4 and then 3. 828 * We also send the remote system the address we used to 829 * contact it in case it can help to connect back with us 830 */ 831 parms.r_prog = program; 832 parms.r_vers = version; 833 /*LINTED const castaway*/ 834 parms.r_owner = (char *) &nullstring[0]; /* not needed; */ 835 /* just for xdring */ 836 parms.r_netid = nconf->nc_netid; /* not really needed */ 837 838 /* 839 * If a COTS transport is being used, try getting address via CLTS 840 * transport. This works only with version 4. 841 */ 842 if (nconf->nc_semantics == NC_TPI_COTS_ORD || 843 nconf->nc_semantics == NC_TPI_COTS) { 844 845 void *handle; 846 struct netconfig *nconf_clts; 847 rpcb_entry_list_ptr relp = NULL; 848 849 if (client == NULL) { 850 /* This did not go through the above PORTMAP/TCP code */ 851 if ((handle = __rpc_setconf("datagram_v")) != NULL) { 852 while ((nconf_clts = __rpc_getconf(handle)) 853 != NULL) { 854 if (strcmp(nconf_clts->nc_protofmly, 855 nconf->nc_protofmly) != 0) { 856 continue; 857 } 858 client = getclnthandle(host, nconf_clts, 859 &parms.r_addr); 860 break; 861 } 862 __rpc_endconf(handle); 863 } 864 if (client == NULL) 865 goto regular_rpcbind; /* Go the regular way */ 866 } else { 867 /* This is a UDP PORTMAP handle. Change to version 4 */ 868 vers = RPCBVERS4; 869 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 870 } 871 /* 872 * We also send the remote system the address we used to 873 * contact it in case it can help it connect back with us 874 */ 875 if (parms.r_addr == NULL) { 876 /*LINTED const castaway*/ 877 parms.r_addr = (char *) &nullstring[0]; /* for XDRing */ 878 } 879 880 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 881 882 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDRLIST, 883 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 884 (xdrproc_t) xdr_rpcb_entry_list_ptr, 885 (char *)(void *)&relp, *tp); 886 if (clnt_st == RPC_SUCCESS) { 887 if ((address = got_entry(relp, nconf)) != NULL) { 888 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 889 (char *)(void *)&relp); 890 CLNT_CONTROL(client, CLGET_SVC_ADDR, 891 (char *)(void *)&servaddr); 892 __rpc_fixup_addr(address, &servaddr); 893 goto done; 894 } 895 /* Entry not found for this transport */ 896 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 897 (char *)(void *)&relp); 898 /* 899 * XXX: should have perhaps returned with error but 900 * since the remote machine might not always be able 901 * to send the address on all transports, we try the 902 * regular way with regular_rpcbind 903 */ 904 goto regular_rpcbind; 905 } else if ((clnt_st == RPC_PROGVERSMISMATCH) || 906 (clnt_st == RPC_PROGUNAVAIL)) { 907 start_vers = RPCBVERS; /* Try version 3 now */ 908 goto regular_rpcbind; /* Try different versions */ 909 } else { 910 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 911 clnt_geterr(client, &rpc_createerr.cf_error); 912 goto error; 913 } 914 } 915 916regular_rpcbind: 917 918 /* Now the same transport is to be used to get the address */ 919 if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 920 (nconf->nc_semantics == NC_TPI_COTS))) { 921 /* A CLTS type of client - destroy it */ 922 CLNT_DESTROY(client); 923 client = NULL; 924 } 925 926 if (client == NULL) { 927 client = getclnthandle(host, nconf, &parms.r_addr); 928 if (client == NULL) { 929 goto error; 930 } 931 } 932 if (parms.r_addr == NULL) { 933 /*LINTED const castaway*/ 934 parms.r_addr = (char *) &nullstring[0]; 935 } 936 937 /* First try from start_vers and then version 3 (RPCBVERS) */ 938 939 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime); 940 for (vers = start_vers; vers >= RPCBVERS; vers--) { 941 /* Set the version */ 942 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 943 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDR, 944 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 945 (xdrproc_t) xdr_wrapstring, (char *)(void *) &ua, *tp); 946 if (clnt_st == RPC_SUCCESS) { 947 if ((ua == NULL) || (ua[0] == 0)) { 948 /* address unknown */ 949 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 950 goto error; 951 } 952 address = uaddr2taddr(nconf, ua); 953#ifdef ND_DEBUG 954 fprintf(stderr, "\tRemote address is [%s]\n", ua); 955 if (!address) 956 fprintf(stderr, 957 "\tCouldn't resolve remote address!\n"); 958#endif 959 xdr_free((xdrproc_t)xdr_wrapstring, 960 (char *)(void *)&ua); 961 962 if (! address) { 963 /* We don't know about your universal address */ 964 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 965 goto error; 966 } 967 CLNT_CONTROL(client, CLGET_SVC_ADDR, 968 (char *)(void *)&servaddr); 969 __rpc_fixup_addr(address, &servaddr); 970 goto done; 971 } else if (clnt_st == RPC_PROGVERSMISMATCH) { 972 struct rpc_err rpcerr; 973 974 clnt_geterr(client, &rpcerr); 975 if (rpcerr.re_vers.low > RPCBVERS4) 976 goto error; /* a new version, can't handle */ 977 } else if (clnt_st != RPC_PROGUNAVAIL) { 978 /* Cant handle this error */ 979 rpc_createerr.cf_stat = clnt_st; 980 clnt_geterr(client, &rpc_createerr.cf_error); 981 goto error; 982 } 983 } 984 985error: 986 if (client) { 987 CLNT_DESTROY(client); 988 client = NULL; 989 } 990done: 991 if (nconf->nc_semantics != NC_TPI_CLTS) { 992 /* This client is the connectionless one */ 993 if (client) { 994 CLNT_DESTROY(client); 995 client = NULL; 996 } 997 } 998 if (clpp) { 999 *clpp = client; 1000 } else if (client) { 1001 CLNT_DESTROY(client); 1002 } 1003 if (parms.r_addr != NULL && parms.r_addr != nullstring) 1004 free(parms.r_addr); 1005 return (address); 1006} 1007 1008 1009/* 1010 * Find the mapped address for program, version. 1011 * Calls the rpcbind service remotely to do the lookup. 1012 * Uses the transport specified in nconf. 1013 * Returns FALSE (0) if no map exists, else returns 1. 1014 * 1015 * Assuming that the address is all properly allocated 1016 */ 1017bool_t 1018rpcb_getaddr(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf, 1019 struct netbuf *address, const char *host) 1020{ 1021 struct netbuf *na; 1022 1023 if ((na = __rpcb_findaddr_timed(program, version, 1024 (struct netconfig *) nconf, (char *) host, 1025 (CLIENT **) NULL, (struct timeval *) NULL)) == NULL) 1026 return (FALSE); 1027 1028 if (na->len > address->maxlen) { 1029 /* Too long address */ 1030 free(na->buf); 1031 free(na); 1032 rpc_createerr.cf_stat = RPC_FAILED; 1033 return (FALSE); 1034 } 1035 memcpy(address->buf, na->buf, (size_t)na->len); 1036 address->len = na->len; 1037 free(na->buf); 1038 free(na); 1039 return (TRUE); 1040} 1041 1042/* 1043 * Get a copy of the current maps. 1044 * Calls the rpcbind service remotely to get the maps. 1045 * 1046 * It returns only a list of the services 1047 * It returns NULL on failure. 1048 */ 1049rpcblist * 1050rpcb_getmaps(const struct netconfig *nconf, const char *host) 1051{ 1052 rpcblist_ptr head = NULL; 1053 CLIENT *client; 1054 enum clnt_stat clnt_st; 1055 rpcvers_t vers = 0; 1056 1057 client = getclnthandle(host, nconf, NULL); 1058 if (client == NULL) { 1059 return (head); 1060 } 1061 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 1062 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 1063 (char *)(void *)&head, tottimeout); 1064 if (clnt_st == RPC_SUCCESS) 1065 goto done; 1066 1067 if ((clnt_st != RPC_PROGVERSMISMATCH) && 1068 (clnt_st != RPC_PROGUNAVAIL)) { 1069 rpc_createerr.cf_stat = RPC_RPCBFAILURE; 1070 clnt_geterr(client, &rpc_createerr.cf_error); 1071 goto done; 1072 } 1073 1074 /* fall back to earlier version */ 1075 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 1076 if (vers == RPCBVERS4) { 1077 vers = RPCBVERS; 1078 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 1079 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 1080 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 1081 (char *)(void *)&head, tottimeout) == RPC_SUCCESS) 1082 goto done; 1083 } 1084 rpc_createerr.cf_stat = RPC_RPCBFAILURE; 1085 clnt_geterr(client, &rpc_createerr.cf_error); 1086 1087done: 1088 CLNT_DESTROY(client); 1089 return (head); 1090} 1091 1092/* 1093 * rpcbinder remote-call-service interface. 1094 * This routine is used to call the rpcbind remote call service 1095 * which will look up a service program in the address maps, and then 1096 * remotely call that routine with the given parameters. This allows 1097 * programs to do a lookup and call in one step. 1098 * 1099 * nconf -Netconfig structure 1100 * host - Remote host name 1101 * proc - Remote proc identifiers 1102 * xdrargs, xdrres; XDR routines 1103 * argsp, resp - Argument and Result 1104 * tout - Timeout value for this call 1105 * addr_ptr - Preallocated netbuf address 1106 */ 1107enum clnt_stat 1108rpcb_rmtcall(const struct netconfig *nconf, const char *host, rpcprog_t prog, 1109 rpcvers_t vers, rpcproc_t proc, xdrproc_t xdrargs, caddr_t argsp, 1110 xdrproc_t xdrres, caddr_t resp, struct timeval tout, 1111 const struct netbuf *addr_ptr) 1112{ 1113 CLIENT *client; 1114 enum clnt_stat stat; 1115 struct r_rpcb_rmtcallargs a; 1116 struct r_rpcb_rmtcallres r; 1117 rpcvers_t rpcb_vers; 1118 1119 stat = 0; 1120 client = getclnthandle(host, nconf, NULL); 1121 if (client == NULL) { 1122 return (RPC_FAILED); 1123 } 1124 /*LINTED const castaway*/ 1125 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&rmttimeout); 1126 a.prog = prog; 1127 a.vers = vers; 1128 a.proc = proc; 1129 a.args.args_val = argsp; 1130 a.xdr_args = xdrargs; 1131 r.addr = NULL; 1132 r.results.results_val = resp; 1133 r.xdr_res = xdrres; 1134 1135 for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) { 1136 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&rpcb_vers); 1137 stat = CLNT_CALL(client, (rpcproc_t)RPCBPROC_CALLIT, 1138 (xdrproc_t) xdr_rpcb_rmtcallargs, (char *)(void *)&a, 1139 (xdrproc_t) xdr_rpcb_rmtcallres, (char *)(void *)&r, tout); 1140 if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) { 1141 struct netbuf *na; 1142 /*LINTED const castaway*/ 1143 na = uaddr2taddr((struct netconfig *) nconf, r.addr); 1144 if (!na) { 1145 stat = RPC_N2AXLATEFAILURE; 1146 /*LINTED const castaway*/ 1147 ((struct netbuf *) addr_ptr)->len = 0; 1148 goto error; 1149 } 1150 if (na->len > addr_ptr->maxlen) { 1151 /* Too long address */ 1152 stat = RPC_FAILED; /* XXX A better error no */ 1153 free(na->buf); 1154 free(na); 1155 /*LINTED const castaway*/ 1156 ((struct netbuf *) addr_ptr)->len = 0; 1157 goto error; 1158 } 1159 memcpy(addr_ptr->buf, na->buf, (size_t)na->len); 1160 /*LINTED const castaway*/ 1161 ((struct netbuf *)addr_ptr)->len = na->len; 1162 free(na->buf); 1163 free(na); 1164 break; 1165 } else if ((stat != RPC_PROGVERSMISMATCH) && 1166 (stat != RPC_PROGUNAVAIL)) { 1167 goto error; 1168 } 1169 } 1170error: 1171 CLNT_DESTROY(client); 1172 if (r.addr) 1173 xdr_free((xdrproc_t) xdr_wrapstring, (char *)(void *)&r.addr); 1174 return (stat); 1175} 1176 1177/* 1178 * Gets the time on the remote host. 1179 * Returns 1 if succeeds else 0. 1180 */ 1181bool_t 1182rpcb_gettime(const char *host, time_t *timep) 1183{ 1184 CLIENT *client = NULL; 1185 void *handle; 1186 struct netconfig *nconf; 1187 rpcvers_t vers; 1188 enum clnt_stat st; 1189 1190 1191 if ((host == NULL) || (host[0] == 0)) { 1192 time(timep); 1193 return (TRUE); 1194 } 1195 1196 if ((handle = __rpc_setconf("netpath")) == NULL) { 1197 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1198 return (FALSE); 1199 } 1200 rpc_createerr.cf_stat = RPC_SUCCESS; 1201 while (client == NULL) { 1202 if ((nconf = __rpc_getconf(handle)) == NULL) { 1203 if (rpc_createerr.cf_stat == RPC_SUCCESS) 1204 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1205 break; 1206 } 1207 client = getclnthandle(host, nconf, NULL); 1208 if (client) 1209 break; 1210 } 1211 __rpc_endconf(handle); 1212 if (client == (CLIENT *) NULL) { 1213 return (FALSE); 1214 } 1215 1216 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 1217 (xdrproc_t) xdr_void, NULL, 1218 (xdrproc_t) xdr_int, (char *)(void *)timep, tottimeout); 1219 1220 if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) { 1221 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 1222 if (vers == RPCBVERS4) { 1223 /* fall back to earlier version */ 1224 vers = RPCBVERS; 1225 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 1226 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 1227 (xdrproc_t) xdr_void, NULL, 1228 (xdrproc_t) xdr_int, (char *)(void *)timep, 1229 tottimeout); 1230 } 1231 } 1232 CLNT_DESTROY(client); 1233 return (st == RPC_SUCCESS? TRUE: FALSE); 1234} 1235 1236/* 1237 * Converts taddr to universal address. This routine should never 1238 * really be called because local n2a libraries are always provided. 1239 */ 1240char * 1241rpcb_taddr2uaddr(struct netconfig *nconf, struct netbuf *taddr) 1242{ 1243 CLIENT *client; 1244 char *uaddr = NULL; 1245 1246 1247 /* parameter checking */ 1248 if (nconf == NULL) { 1249 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1250 return (NULL); 1251 } 1252 if (taddr == NULL) { 1253 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 1254 return (NULL); 1255 } 1256 client = local_rpcb(); 1257 if (! client) { 1258 return (NULL); 1259 } 1260 1261 CLNT_CALL(client, (rpcproc_t)RPCBPROC_TADDR2UADDR, 1262 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 1263 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, tottimeout); 1264 CLNT_DESTROY(client); 1265 return (uaddr); 1266} 1267 1268/* 1269 * Converts universal address to netbuf. This routine should never 1270 * really be called because local n2a libraries are always provided. 1271 */ 1272struct netbuf * 1273rpcb_uaddr2taddr(struct netconfig *nconf, char *uaddr) 1274{ 1275 CLIENT *client; 1276 struct netbuf *taddr; 1277 1278 1279 /* parameter checking */ 1280 if (nconf == NULL) { 1281 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1282 return (NULL); 1283 } 1284 if (uaddr == NULL) { 1285 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 1286 return (NULL); 1287 } 1288 client = local_rpcb(); 1289 if (! client) { 1290 return (NULL); 1291 } 1292 1293 taddr = (struct netbuf *)calloc(1, sizeof (struct netbuf)); 1294 if (taddr == NULL) { 1295 CLNT_DESTROY(client); 1296 return (NULL); 1297 } 1298 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_UADDR2TADDR, 1299 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, 1300 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 1301 tottimeout) != RPC_SUCCESS) { 1302 free(taddr); 1303 taddr = NULL; 1304 } 1305 CLNT_DESTROY(client); 1306 return (taddr); 1307} 1308