rpcb_clnt.c revision 261046
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) 38static char sccsid[] = "@(#)rpcb_clnt.c 1.30 89/06/21 Copyr 1988 Sun Micro"; 39#endif 40#include <sys/cdefs.h> 41__FBSDID("$FreeBSD: stable/10/sys/rpc/rpcb_clnt.c 261046 2014-01-22 23:45:27Z mav $"); 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 66static struct timeval tottimeout = { 60, 0 }; 67static const char nullstring[] = "\000"; 68 69static CLIENT *local_rpcb(void); 70 71#if 0 72 73static const struct timeval rmttimeout = { 3, 0 }; 74static struct timeval rpcbrmttime = { 15, 0 }; 75 76#define CACHESIZE 6 77 78struct 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 86static struct address_cache *front; 87static int cachesize; 88 89#define CLCR_GET_RPCB_TIMEOUT 1 90#define CLCR_SET_RPCB_TIMEOUT 2 91 92 93extern int __rpc_lowvers; 94 95static struct address_cache *check_cache(const char *, const char *); 96static void delete_cache(struct netbuf *); 97static void add_cache(const char *, const char *, struct netbuf *, char *); 98static CLIENT *getclnthandle(const char *, const struct netconfig *, char **); 99static CLIENT *local_rpcb(void); 100static 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 */ 108bool_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 149static struct address_cache * 150check_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 170static void 171delete_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 197static void 198add_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) { 221out: 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 */ 285static CLIENT * 286getclnthandle(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 */ 436static CLIENT * 437local_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 473try_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 */ 538bool_t 539rpcb_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 */ 606bool_t 607rpcb_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 */ 651static struct netbuf * 652got_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 */ 684static 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 */ 739struct 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 848try_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 953regular_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 1022error: 1023 if (client) { 1024 CLNT_DESTROY(client); 1025 client = NULL; 1026 } 1027done: 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 */ 1054int 1055rpcb_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 */ 1090rpcblist * 1091rpcb_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 1130done: 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*/ 1142enum clnt_stat 1143rpcb_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 } 1212error: 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 */ 1223bool_t 1224rpcb_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 1280static bool_t 1281xdr_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 */ 1299char * 1300rpcb_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 */ 1331struct netbuf * 1332rpcb_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 1365