1 /* $NetBSD: rpcb_clnt.c,v 1.6 2000/07/16 06:41:43 itojun Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2010, Oracle America, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * - Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * - Neither the name of the "Oracle America, Inc." nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 34 */ 35 36 /* #ident "@(#)rpcb_clnt.c 1.27 94/04/24 SMI" */ 37 38 39 #if defined(LIBC_SCCS) && !defined(lint) 40 static char sccsid[] = "@(#)rpcb_clnt.c 1.30 89/06/21 Copyr 1988 Sun Micro"; 41 #endif 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 /* 46 * rpcb_clnt.c 47 * interface to rpcbind rpc service. 48 * 49 * Copyright (C) 1988, Sun Microsystems, Inc. 50 */ 51 52 #include "opt_inet6.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/malloc.h> 58 #include <sys/proc.h> 59 #include <sys/socket.h> 60 #include <sys/socketvar.h> 61 62 #include <rpc/rpc.h> 63 #include <rpc/rpcb_clnt.h> 64 #include <rpc/rpcb_prot.h> 65 66 #include <rpc/rpc_com.h> 67 68 static struct timeval tottimeout = { 60, 0 }; 69 static const char nullstring[] = "\000"; 70 71 static CLIENT *local_rpcb(void); 72 73 #if 0 74 75 static const struct timeval rmttimeout = { 3, 0 }; 76 static struct timeval rpcbrmttime = { 15, 0 }; 77 78 #define CACHESIZE 6 79 80 struct address_cache { 81 char *ac_host; 82 char *ac_netid; 83 char *ac_uaddr; 84 struct netbuf *ac_taddr; 85 struct address_cache *ac_next; 86 }; 87 88 static struct address_cache *front; 89 static int cachesize; 90 91 #define CLCR_GET_RPCB_TIMEOUT 1 92 #define CLCR_SET_RPCB_TIMEOUT 2 93 94 95 extern int __rpc_lowvers; 96 97 static struct address_cache *check_cache(const char *, const char *); 98 static void delete_cache(struct netbuf *); 99 static void add_cache(const char *, const char *, struct netbuf *, char *); 100 static CLIENT *getclnthandle(const char *, const struct netconfig *, char **); 101 static CLIENT *local_rpcb(void); 102 static struct netbuf *got_entry(rpcb_entry_list_ptr, const struct netconfig *); 103 104 /* 105 * This routine adjusts the timeout used for calls to the remote rpcbind. 106 * Also, this routine can be used to set the use of portmapper version 2 107 * only when doing rpc_broadcasts 108 * These are private routines that may not be provided in future releases. 109 */ 110 bool_t 111 __rpc_control(request, info) 112 int request; 113 void *info; 114 { 115 switch (request) { 116 case CLCR_GET_RPCB_TIMEOUT: 117 *(struct timeval *)info = tottimeout; 118 break; 119 case CLCR_SET_RPCB_TIMEOUT: 120 tottimeout = *(struct timeval *)info; 121 break; 122 case CLCR_SET_LOWVERS: 123 __rpc_lowvers = *(int *)info; 124 break; 125 case CLCR_GET_LOWVERS: 126 *(int *)info = __rpc_lowvers; 127 break; 128 default: 129 return (FALSE); 130 } 131 return (TRUE); 132 } 133 134 /* 135 * It might seem that a reader/writer lock would be more reasonable here. 136 * However because getclnthandle(), the only user of the cache functions, 137 * may do a delete_cache() operation if a check_cache() fails to return an 138 * address useful to clnt_tli_create(), we may as well use a mutex. 139 */ 140 /* 141 * As it turns out, if the cache lock is *not* a reader/writer lock, we will 142 * block all clnt_create's if we are trying to connect to a host that's down, 143 * since the lock will be held all during that time. 144 */ 145 146 /* 147 * The routines check_cache(), add_cache(), delete_cache() manage the 148 * cache of rpcbind addresses for (host, netid). 149 */ 150 151 static struct address_cache * 152 check_cache(host, netid) 153 const char *host, *netid; 154 { 155 struct address_cache *cptr; 156 157 /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 158 159 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 160 if (!strcmp(cptr->ac_host, host) && 161 !strcmp(cptr->ac_netid, netid)) { 162 #ifdef ND_DEBUG 163 fprintf(stderr, "Found cache entry for %s: %s\n", 164 host, netid); 165 #endif 166 return (cptr); 167 } 168 } 169 return ((struct address_cache *) NULL); 170 } 171 172 static void 173 delete_cache(addr) 174 struct netbuf *addr; 175 { 176 struct address_cache *cptr, *prevptr = NULL; 177 178 /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 179 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 180 if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) { 181 free(cptr->ac_host); 182 free(cptr->ac_netid); 183 free(cptr->ac_taddr->buf); 184 free(cptr->ac_taddr); 185 if (cptr->ac_uaddr) 186 free(cptr->ac_uaddr); 187 if (prevptr) 188 prevptr->ac_next = cptr->ac_next; 189 else 190 front = cptr->ac_next; 191 free(cptr); 192 cachesize--; 193 break; 194 } 195 prevptr = cptr; 196 } 197 } 198 199 static void 200 add_cache(host, netid, taddr, uaddr) 201 const char *host, *netid; 202 char *uaddr; 203 struct netbuf *taddr; 204 { 205 struct address_cache *ad_cache, *cptr, *prevptr; 206 207 ad_cache = (struct address_cache *) 208 malloc(sizeof (struct address_cache)); 209 if (!ad_cache) { 210 return; 211 } 212 ad_cache->ac_host = strdup(host); 213 ad_cache->ac_netid = strdup(netid); 214 ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL; 215 ad_cache->ac_taddr = (struct netbuf *)malloc(sizeof (struct netbuf)); 216 if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr || 217 (uaddr && !ad_cache->ac_uaddr)) { 218 goto out; 219 } 220 ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len; 221 ad_cache->ac_taddr->buf = (char *) malloc(taddr->len); 222 if (ad_cache->ac_taddr->buf == NULL) { 223 out: 224 if (ad_cache->ac_host) 225 free(ad_cache->ac_host); 226 if (ad_cache->ac_netid) 227 free(ad_cache->ac_netid); 228 if (ad_cache->ac_uaddr) 229 free(ad_cache->ac_uaddr); 230 if (ad_cache->ac_taddr) 231 free(ad_cache->ac_taddr); 232 free(ad_cache); 233 return; 234 } 235 memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len); 236 #ifdef ND_DEBUG 237 fprintf(stderr, "Added to cache: %s : %s\n", host, netid); 238 #endif 239 240 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */ 241 242 rwlock_wrlock(&rpcbaddr_cache_lock); 243 if (cachesize < CACHESIZE) { 244 ad_cache->ac_next = front; 245 front = ad_cache; 246 cachesize++; 247 } else { 248 /* Free the last entry */ 249 cptr = front; 250 prevptr = NULL; 251 while (cptr->ac_next) { 252 prevptr = cptr; 253 cptr = cptr->ac_next; 254 } 255 256 #ifdef ND_DEBUG 257 fprintf(stderr, "Deleted from cache: %s : %s\n", 258 cptr->ac_host, cptr->ac_netid); 259 #endif 260 free(cptr->ac_host); 261 free(cptr->ac_netid); 262 free(cptr->ac_taddr->buf); 263 free(cptr->ac_taddr); 264 if (cptr->ac_uaddr) 265 free(cptr->ac_uaddr); 266 267 if (prevptr) { 268 prevptr->ac_next = NULL; 269 ad_cache->ac_next = front; 270 front = ad_cache; 271 } else { 272 front = ad_cache; 273 ad_cache->ac_next = NULL; 274 } 275 free(cptr); 276 } 277 rwlock_unlock(&rpcbaddr_cache_lock); 278 } 279 280 /* 281 * This routine will return a client handle that is connected to the 282 * rpcbind. If targaddr is non-NULL, the "universal address" of the 283 * host will be stored in *targaddr; the caller is responsible for 284 * freeing this string. 285 * On error, returns NULL and free's everything. 286 */ 287 static CLIENT * 288 getclnthandle(host, nconf, targaddr) 289 const char *host; 290 const struct netconfig *nconf; 291 char **targaddr; 292 { 293 CLIENT *client; 294 struct netbuf *addr, taddr; 295 struct netbuf addr_to_delete; 296 struct __rpc_sockinfo si; 297 struct addrinfo hints, *res, *tres; 298 struct address_cache *ad_cache; 299 char *tmpaddr; 300 301 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */ 302 303 /* Get the address of the rpcbind. Check cache first */ 304 client = NULL; 305 addr_to_delete.len = 0; 306 rwlock_rdlock(&rpcbaddr_cache_lock); 307 ad_cache = NULL; 308 if (host != NULL) 309 ad_cache = check_cache(host, nconf->nc_netid); 310 if (ad_cache != NULL) { 311 addr = ad_cache->ac_taddr; 312 client = clnt_tli_create(RPC_ANYFD, nconf, addr, 313 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 314 if (client != NULL) { 315 if (targaddr) 316 *targaddr = strdup(ad_cache->ac_uaddr); 317 rwlock_unlock(&rpcbaddr_cache_lock); 318 return (client); 319 } 320 addr_to_delete.len = addr->len; 321 addr_to_delete.buf = (char *)malloc(addr->len); 322 if (addr_to_delete.buf == NULL) { 323 addr_to_delete.len = 0; 324 } else { 325 memcpy(addr_to_delete.buf, addr->buf, addr->len); 326 } 327 } 328 rwlock_unlock(&rpcbaddr_cache_lock); 329 if (addr_to_delete.len != 0) { 330 /* 331 * Assume this may be due to cache data being 332 * outdated 333 */ 334 rwlock_wrlock(&rpcbaddr_cache_lock); 335 delete_cache(&addr_to_delete); 336 rwlock_unlock(&rpcbaddr_cache_lock); 337 free(addr_to_delete.buf); 338 } 339 if (!__rpc_nconf2sockinfo(nconf, &si)) { 340 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 341 return NULL; 342 } 343 344 memset(&hints, 0, sizeof hints); 345 hints.ai_family = si.si_af; 346 hints.ai_socktype = si.si_socktype; 347 hints.ai_protocol = si.si_proto; 348 349 #ifdef CLNT_DEBUG 350 printf("trying netid %s family %d proto %d socktype %d\n", 351 nconf->nc_netid, si.si_af, si.si_proto, si.si_socktype); 352 #endif 353 354 if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 355 client = local_rpcb(); 356 if (! client) { 357 #ifdef ND_DEBUG 358 clnt_pcreateerror("rpcbind clnt interface"); 359 #endif 360 return (NULL); 361 } else { 362 struct sockaddr_un sun; 363 if (targaddr) { 364 *targaddr = malloc(sizeof(sun.sun_path)); 365 if (*targaddr == NULL) { 366 CLNT_DESTROY(client); 367 return (NULL); 368 } 369 strncpy(*targaddr, _PATH_RPCBINDSOCK, 370 sizeof(sun.sun_path)); 371 } 372 return (client); 373 } 374 } else { 375 if (getaddrinfo(host, "sunrpc", &hints, &res) != 0) { 376 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 377 return NULL; 378 } 379 } 380 381 for (tres = res; tres != NULL; tres = tres->ai_next) { 382 taddr.buf = tres->ai_addr; 383 taddr.len = taddr.maxlen = tres->ai_addrlen; 384 385 #ifdef ND_DEBUG 386 { 387 char *ua; 388 389 ua = taddr2uaddr(nconf, &taddr); 390 fprintf(stderr, "Got it [%s]\n", ua); 391 free(ua); 392 } 393 #endif 394 395 #ifdef ND_DEBUG 396 { 397 int i; 398 399 fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n", 400 taddr.len, taddr.maxlen); 401 fprintf(stderr, "\tAddress is "); 402 for (i = 0; i < taddr.len; i++) 403 fprintf(stderr, "%u.", ((char *)(taddr.buf))[i]); 404 fprintf(stderr, "\n"); 405 } 406 #endif 407 client = clnt_tli_create(RPC_ANYFD, nconf, &taddr, 408 (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 409 #ifdef ND_DEBUG 410 if (! client) { 411 clnt_pcreateerror("rpcbind clnt interface"); 412 } 413 #endif 414 415 if (client) { 416 tmpaddr = targaddr ? taddr2uaddr(nconf, &taddr) : NULL; 417 add_cache(host, nconf->nc_netid, &taddr, tmpaddr); 418 if (targaddr) 419 *targaddr = tmpaddr; 420 break; 421 } 422 } 423 if (res) 424 freeaddrinfo(res); 425 return (client); 426 } 427 428 #endif 429 430 /* XXX */ 431 #define IN4_LOCALHOST_STRING "127.0.0.1" 432 #define IN6_LOCALHOST_STRING "::1" 433 434 /* 435 * This routine will return a client handle that is connected to the local 436 * rpcbind. Returns NULL on error and free's everything. 437 */ 438 static CLIENT * 439 local_rpcb(void) 440 { 441 CLIENT *client; 442 struct socket *so; 443 size_t tsize; 444 struct sockaddr_un sun; 445 int error; 446 447 /* 448 * Try connecting to the local rpcbind through a local socket 449 * first. If this doesn't work, try all transports defined in 450 * the netconfig file. 451 */ 452 memset(&sun, 0, sizeof sun); 453 so = NULL; 454 error = socreate(AF_LOCAL, &so, SOCK_STREAM, 0, curthread->td_ucred, 455 curthread); 456 if (error) 457 goto try_nconf; 458 sun.sun_family = AF_LOCAL; 459 strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 460 sun.sun_len = SUN_LEN(&sun); 461 462 tsize = __rpc_get_t_size(AF_LOCAL, 0, 0); 463 client = clnt_vc_create(so, (struct sockaddr *)&sun, (rpcprog_t)RPCBPROG, 464 (rpcvers_t)RPCBVERS, tsize, tsize, 1); 465 466 if (client != NULL) { 467 /* Mark the socket to be closed in destructor */ 468 (void) CLNT_CONTROL(client, CLSET_FD_CLOSE, NULL); 469 return client; 470 } 471 472 /* Nobody needs this socket anymore; free the descriptor. */ 473 soclose(so); 474 475 try_nconf: 476 477 #if 0 478 static struct netconfig *loopnconf; 479 static char *localhostname; 480 481 /* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */ 482 mutex_lock(&loopnconf_lock); 483 if (loopnconf == NULL) { 484 struct netconfig *nconf, *tmpnconf = NULL; 485 void *nc_handle; 486 int fd; 487 488 nc_handle = setnetconfig(); 489 if (nc_handle == NULL) { 490 /* fails to open netconfig file */ 491 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 492 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 493 mutex_unlock(&loopnconf_lock); 494 return (NULL); 495 } 496 while ((nconf = getnetconfig(nc_handle)) != NULL) { 497 if (( 498 #ifdef INET6 499 strcmp(nconf->nc_protofmly, NC_INET6) == 0 || 500 #endif 501 strcmp(nconf->nc_protofmly, NC_INET) == 0) && 502 (nconf->nc_semantics == NC_TPI_COTS || 503 nconf->nc_semantics == NC_TPI_COTS_ORD)) { 504 fd = __rpc_nconf2fd(nconf); 505 /* 506 * Can't create a socket, assume that 507 * this family isn't configured in the kernel. 508 */ 509 if (fd < 0) 510 continue; 511 _close(fd); 512 tmpnconf = nconf; 513 if (!strcmp(nconf->nc_protofmly, NC_INET)) 514 localhostname = IN4_LOCALHOST_STRING; 515 else 516 localhostname = IN6_LOCALHOST_STRING; 517 } 518 } 519 if (tmpnconf == NULL) { 520 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 521 mutex_unlock(&loopnconf_lock); 522 return (NULL); 523 } 524 loopnconf = getnetconfigent(tmpnconf->nc_netid); 525 /* loopnconf is never freed */ 526 endnetconfig(nc_handle); 527 } 528 mutex_unlock(&loopnconf_lock); 529 client = getclnthandle(localhostname, loopnconf, NULL); 530 return (client); 531 #else 532 return (NULL); 533 #endif 534 } 535 536 /* 537 * Set a mapping between program, version and address. 538 * Calls the rpcbind service to do the mapping. 539 */ 540 bool_t 541 rpcb_set(rpcprog_t program, rpcvers_t version, 542 const struct netconfig *nconf, /* Network structure of transport */ 543 const struct netbuf *address) /* Services netconfig address */ 544 { 545 CLIENT *client; 546 bool_t rslt = FALSE; 547 RPCB parms; 548 #if 0 549 char uidbuf[32]; 550 #endif 551 struct netconfig nconfcopy; 552 struct netbuf addresscopy; 553 554 /* parameter checking */ 555 if (nconf == NULL) { 556 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 557 return (FALSE); 558 } 559 if (address == NULL) { 560 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 561 return (FALSE); 562 } 563 client = local_rpcb(); 564 if (! client) { 565 return (FALSE); 566 } 567 568 /* convert to universal */ 569 /*LINTED const castaway*/ 570 nconfcopy = *nconf; 571 addresscopy = *address; 572 parms.r_addr = taddr2uaddr(&nconfcopy, &addresscopy); 573 if (!parms.r_addr) { 574 CLNT_DESTROY(client); 575 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 576 return (FALSE); /* no universal address */ 577 } 578 parms.r_prog = program; 579 parms.r_vers = version; 580 parms.r_netid = nconf->nc_netid; 581 #if 0 582 /* 583 * Though uid is not being used directly, we still send it for 584 * completeness. For non-unix platforms, perhaps some other 585 * string or an empty string can be sent. 586 */ 587 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 588 parms.r_owner = uidbuf; 589 #else 590 parms.r_owner = ""; 591 #endif 592 593 CLNT_CALL(client, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb, 594 (char *)(void *)&parms, (xdrproc_t) xdr_bool, 595 (char *)(void *)&rslt, tottimeout); 596 597 CLNT_DESTROY(client); 598 free(parms.r_addr, M_RPC); 599 return (rslt); 600 } 601 602 /* 603 * Remove the mapping between program, version and netbuf address. 604 * Calls the rpcbind service to do the un-mapping. 605 * If netbuf is NULL, unset for all the transports, otherwise unset 606 * only for the given transport. 607 */ 608 bool_t 609 rpcb_unset(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf) 610 { 611 CLIENT *client; 612 bool_t rslt = FALSE; 613 RPCB parms; 614 #if 0 615 char uidbuf[32]; 616 #endif 617 618 client = local_rpcb(); 619 if (! client) { 620 return (FALSE); 621 } 622 623 parms.r_prog = program; 624 parms.r_vers = version; 625 if (nconf) 626 parms.r_netid = nconf->nc_netid; 627 else { 628 /*LINTED const castaway*/ 629 parms.r_netid = (char *)(uintptr_t) &nullstring[0]; /* unsets all */ 630 } 631 /*LINTED const castaway*/ 632 parms.r_addr = (char *)(uintptr_t) &nullstring[0]; 633 #if 0 634 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 635 parms.r_owner = uidbuf; 636 #else 637 parms.r_owner = ""; 638 #endif 639 640 CLNT_CALL(client, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb, 641 (char *)(void *)&parms, (xdrproc_t) xdr_bool, 642 (char *)(void *)&rslt, tottimeout); 643 644 CLNT_DESTROY(client); 645 return (rslt); 646 } 647 648 #if 0 649 650 /* 651 * From the merged list, find the appropriate entry 652 */ 653 static struct netbuf * 654 got_entry(relp, nconf) 655 rpcb_entry_list_ptr relp; 656 const struct netconfig *nconf; 657 { 658 struct netbuf *na = NULL; 659 rpcb_entry_list_ptr sp; 660 rpcb_entry *rmap; 661 662 for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) { 663 rmap = &sp->rpcb_entry_map; 664 if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) && 665 (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) && 666 (nconf->nc_semantics == rmap->r_nc_semantics) && 667 (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != 0)) { 668 na = uaddr2taddr(nconf, rmap->r_maddr); 669 #ifdef ND_DEBUG 670 fprintf(stderr, "\tRemote address is [%s].\n", 671 rmap->r_maddr); 672 if (!na) 673 fprintf(stderr, 674 "\tCouldn't resolve remote address!\n"); 675 #endif 676 break; 677 } 678 } 679 return (na); 680 } 681 682 /* 683 * Quick check to see if rpcbind is up. Tries to connect over 684 * local transport. 685 */ 686 static bool_t 687 __rpcbind_is_up() 688 { 689 struct netconfig *nconf; 690 struct sockaddr_un sun; 691 void *localhandle; 692 int sock; 693 694 nconf = NULL; 695 localhandle = setnetconfig(); 696 while ((nconf = getnetconfig(localhandle)) != NULL) { 697 if (nconf->nc_protofmly != NULL && 698 strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) 699 break; 700 } 701 if (nconf == NULL) 702 return (FALSE); 703 704 endnetconfig(localhandle); 705 706 memset(&sun, 0, sizeof sun); 707 sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 708 if (sock < 0) 709 return (FALSE); 710 sun.sun_family = AF_LOCAL; 711 strncpy(sun.sun_path, _PATH_RPCBINDSOCK, sizeof(sun.sun_path)); 712 sun.sun_len = SUN_LEN(&sun); 713 714 if (_connect(sock, (struct sockaddr *)&sun, sun.sun_len) < 0) { 715 _close(sock); 716 return (FALSE); 717 } 718 719 _close(sock); 720 return (TRUE); 721 } 722 723 /* 724 * An internal function which optimizes rpcb_getaddr function. It also 725 * returns the client handle that it uses to contact the remote rpcbind. 726 * 727 * The algorithm used: If the transports is TCP or UDP, it first tries 728 * version 2 (portmap), 4 and then 3 (svr4). This order should be 729 * changed in the next OS release to 4, 2 and 3. We are assuming that by 730 * that time, version 4 would be available on many machines on the network. 731 * With this algorithm, we get performance as well as a plan for 732 * obsoleting version 2. 733 * 734 * For all other transports, the algorithm remains as 4 and then 3. 735 * 736 * XXX: Due to some problems with t_connect(), we do not reuse the same client 737 * handle for COTS cases and hence in these cases we do not return the 738 * client handle. This code will change if t_connect() ever 739 * starts working properly. Also look under clnt_vc.c. 740 */ 741 struct netbuf * 742 __rpcb_findaddr_timed(program, version, nconf, host, clpp, tp) 743 rpcprog_t program; 744 rpcvers_t version; 745 const struct netconfig *nconf; 746 const char *host; 747 CLIENT **clpp; 748 struct timeval *tp; 749 { 750 static bool_t check_rpcbind = TRUE; 751 CLIENT *client = NULL; 752 RPCB parms; 753 enum clnt_stat clnt_st; 754 char *ua = NULL; 755 rpcvers_t vers; 756 struct netbuf *address = NULL; 757 rpcvers_t start_vers = RPCBVERS4; 758 struct netbuf servaddr; 759 760 /* parameter checking */ 761 if (nconf == NULL) { 762 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 763 return (NULL); 764 } 765 766 parms.r_addr = NULL; 767 768 /* 769 * Use default total timeout if no timeout is specified. 770 */ 771 if (tp == NULL) 772 tp = &tottimeout; 773 774 #ifdef PORTMAP 775 /* Try version 2 for TCP or UDP */ 776 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) { 777 u_short port = 0; 778 struct netbuf remote; 779 rpcvers_t pmapvers = 2; 780 struct pmap pmapparms; 781 782 /* 783 * Try UDP only - there are some portmappers out 784 * there that use UDP only. 785 */ 786 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 787 struct netconfig *newnconf; 788 789 if ((newnconf = getnetconfigent("udp")) == NULL) { 790 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 791 return (NULL); 792 } 793 client = getclnthandle(host, newnconf, &parms.r_addr); 794 freenetconfigent(newnconf); 795 } else { 796 client = getclnthandle(host, nconf, &parms.r_addr); 797 } 798 if (client == NULL) 799 return (NULL); 800 801 /* 802 * Set version and retry timeout. 803 */ 804 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 805 CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers); 806 807 pmapparms.pm_prog = program; 808 pmapparms.pm_vers = version; 809 pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ? 810 IPPROTO_UDP : IPPROTO_TCP; 811 pmapparms.pm_port = 0; /* not needed */ 812 clnt_st = CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 813 (xdrproc_t) xdr_pmap, (caddr_t)(void *)&pmapparms, 814 (xdrproc_t) xdr_u_short, (caddr_t)(void *)&port, 815 *tp); 816 if (clnt_st != RPC_SUCCESS) { 817 if ((clnt_st == RPC_PROGVERSMISMATCH) || 818 (clnt_st == RPC_PROGUNAVAIL)) 819 goto try_rpcbind; /* Try different versions */ 820 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 821 clnt_geterr(client, &rpc_createerr.cf_error); 822 goto error; 823 } else if (port == 0) { 824 address = NULL; 825 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 826 goto error; 827 } 828 port = htons(port); 829 CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote); 830 if (((address = (struct netbuf *) 831 malloc(sizeof (struct netbuf))) == NULL) || 832 ((address->buf = (char *) 833 malloc(remote.len)) == NULL)) { 834 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 835 clnt_geterr(client, &rpc_createerr.cf_error); 836 if (address) { 837 free(address); 838 address = NULL; 839 } 840 goto error; 841 } 842 memcpy(address->buf, remote.buf, remote.len); 843 memcpy(&((char *)address->buf)[sizeof (short)], 844 (char *)(void *)&port, sizeof (short)); 845 address->len = address->maxlen = remote.len; 846 goto done; 847 } 848 #endif /* PORTMAP */ 849 850 try_rpcbind: 851 /* 852 * Check if rpcbind is up. This prevents needless delays when 853 * accessing applications such as the keyserver while booting 854 * disklessly. 855 */ 856 if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 857 if (!__rpcbind_is_up()) { 858 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 859 rpc_createerr.cf_error.re_errno = 0; 860 goto error; 861 } 862 check_rpcbind = FALSE; 863 } 864 865 /* 866 * Now we try version 4 and then 3. 867 * We also send the remote system the address we used to 868 * contact it in case it can help to connect back with us 869 */ 870 parms.r_prog = program; 871 parms.r_vers = version; 872 /*LINTED const castaway*/ 873 parms.r_owner = (char *) &nullstring[0]; /* not needed; */ 874 /* just for xdring */ 875 parms.r_netid = nconf->nc_netid; /* not really needed */ 876 877 /* 878 * If a COTS transport is being used, try getting address via CLTS 879 * transport. This works only with version 4. 880 */ 881 if (nconf->nc_semantics == NC_TPI_COTS_ORD || 882 nconf->nc_semantics == NC_TPI_COTS) { 883 884 void *handle; 885 struct netconfig *nconf_clts; 886 rpcb_entry_list_ptr relp = NULL; 887 888 if (client == NULL) { 889 /* This did not go through the above PORTMAP/TCP code */ 890 if ((handle = __rpc_setconf("datagram_v")) != NULL) { 891 while ((nconf_clts = __rpc_getconf(handle)) 892 != NULL) { 893 if (strcmp(nconf_clts->nc_protofmly, 894 nconf->nc_protofmly) != 0) { 895 continue; 896 } 897 client = getclnthandle(host, nconf_clts, 898 &parms.r_addr); 899 break; 900 } 901 __rpc_endconf(handle); 902 } 903 if (client == NULL) 904 goto regular_rpcbind; /* Go the regular way */ 905 } else { 906 /* This is a UDP PORTMAP handle. Change to version 4 */ 907 vers = RPCBVERS4; 908 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 909 } 910 /* 911 * We also send the remote system the address we used to 912 * contact it in case it can help it connect back with us 913 */ 914 if (parms.r_addr == NULL) { 915 /*LINTED const castaway*/ 916 parms.r_addr = (char *) &nullstring[0]; /* for XDRing */ 917 } 918 919 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 920 921 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDRLIST, 922 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 923 (xdrproc_t) xdr_rpcb_entry_list_ptr, 924 (char *)(void *)&relp, *tp); 925 if (clnt_st == RPC_SUCCESS) { 926 if ((address = got_entry(relp, nconf)) != NULL) { 927 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 928 (char *)(void *)&relp); 929 CLNT_CONTROL(client, CLGET_SVC_ADDR, 930 (char *)(void *)&servaddr); 931 __rpc_fixup_addr(address, &servaddr); 932 goto done; 933 } 934 /* Entry not found for this transport */ 935 xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 936 (char *)(void *)&relp); 937 /* 938 * XXX: should have perhaps returned with error but 939 * since the remote machine might not always be able 940 * to send the address on all transports, we try the 941 * regular way with regular_rpcbind 942 */ 943 goto regular_rpcbind; 944 } else if ((clnt_st == RPC_PROGVERSMISMATCH) || 945 (clnt_st == RPC_PROGUNAVAIL)) { 946 start_vers = RPCBVERS; /* Try version 3 now */ 947 goto regular_rpcbind; /* Try different versions */ 948 } else { 949 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 950 clnt_geterr(client, &rpc_createerr.cf_error); 951 goto error; 952 } 953 } 954 955 regular_rpcbind: 956 957 /* Now the same transport is to be used to get the address */ 958 if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 959 (nconf->nc_semantics == NC_TPI_COTS))) { 960 /* A CLTS type of client - destroy it */ 961 CLNT_DESTROY(client); 962 client = NULL; 963 } 964 965 if (client == NULL) { 966 client = getclnthandle(host, nconf, &parms.r_addr); 967 if (client == NULL) { 968 goto error; 969 } 970 } 971 if (parms.r_addr == NULL) { 972 /*LINTED const castaway*/ 973 parms.r_addr = (char *) &nullstring[0]; 974 } 975 976 /* First try from start_vers and then version 3 (RPCBVERS) */ 977 978 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime); 979 for (vers = start_vers; vers >= RPCBVERS; vers--) { 980 /* Set the version */ 981 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 982 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDR, 983 (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 984 (xdrproc_t) xdr_wrapstring, (char *)(void *) &ua, *tp); 985 if (clnt_st == RPC_SUCCESS) { 986 if ((ua == NULL) || (ua[0] == 0)) { 987 /* address unknown */ 988 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 989 goto error; 990 } 991 address = uaddr2taddr(nconf, ua); 992 #ifdef ND_DEBUG 993 fprintf(stderr, "\tRemote address is [%s]\n", ua); 994 if (!address) 995 fprintf(stderr, 996 "\tCouldn't resolve remote address!\n"); 997 #endif 998 xdr_free((xdrproc_t)xdr_wrapstring, 999 (char *)(void *)&ua); 1000 1001 if (! address) { 1002 /* We don't know about your universal address */ 1003 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 1004 goto error; 1005 } 1006 CLNT_CONTROL(client, CLGET_SVC_ADDR, 1007 (char *)(void *)&servaddr); 1008 __rpc_fixup_addr(address, &servaddr); 1009 goto done; 1010 } else if (clnt_st == RPC_PROGVERSMISMATCH) { 1011 struct rpc_err rpcerr; 1012 1013 clnt_geterr(client, &rpcerr); 1014 if (rpcerr.re_vers.low > RPCBVERS4) 1015 goto error; /* a new version, can't handle */ 1016 } else if (clnt_st != RPC_PROGUNAVAIL) { 1017 /* Cant handle this error */ 1018 rpc_createerr.cf_stat = clnt_st; 1019 clnt_geterr(client, &rpc_createerr.cf_error); 1020 goto error; 1021 } 1022 } 1023 1024 error: 1025 if (client) { 1026 CLNT_DESTROY(client); 1027 client = NULL; 1028 } 1029 done: 1030 if (nconf->nc_semantics != NC_TPI_CLTS) { 1031 /* This client is the connectionless one */ 1032 if (client) { 1033 CLNT_DESTROY(client); 1034 client = NULL; 1035 } 1036 } 1037 if (clpp) { 1038 *clpp = client; 1039 } else if (client) { 1040 CLNT_DESTROY(client); 1041 } 1042 if (parms.r_addr != NULL && parms.r_addr != nullstring) 1043 free(parms.r_addr); 1044 return (address); 1045 } 1046 1047 1048 /* 1049 * Find the mapped address for program, version. 1050 * Calls the rpcbind service remotely to do the lookup. 1051 * Uses the transport specified in nconf. 1052 * Returns FALSE (0) if no map exists, else returns 1. 1053 * 1054 * Assuming that the address is all properly allocated 1055 */ 1056 bool_t 1057 rpcb_getaddr(program, version, nconf, address, host) 1058 rpcprog_t program; 1059 rpcvers_t version; 1060 const struct netconfig *nconf; 1061 struct netbuf *address; 1062 const char *host; 1063 { 1064 struct netbuf *na; 1065 1066 if ((na = __rpcb_findaddr_timed(program, version, 1067 (struct netconfig *) nconf, (char *) host, 1068 (CLIENT **) NULL, (struct timeval *) NULL)) == NULL) 1069 return (FALSE); 1070 1071 if (na->len > address->maxlen) { 1072 /* Too long address */ 1073 free(na->buf); 1074 free(na); 1075 rpc_createerr.cf_stat = RPC_FAILED; 1076 return (FALSE); 1077 } 1078 memcpy(address->buf, na->buf, (size_t)na->len); 1079 address->len = na->len; 1080 free(na->buf); 1081 free(na); 1082 return (TRUE); 1083 } 1084 1085 /* 1086 * Get a copy of the current maps. 1087 * Calls the rpcbind service remotely to get the maps. 1088 * 1089 * It returns only a list of the services 1090 * It returns NULL on failure. 1091 */ 1092 rpcblist * 1093 rpcb_getmaps(nconf, host) 1094 const struct netconfig *nconf; 1095 const char *host; 1096 { 1097 rpcblist_ptr head = NULL; 1098 CLIENT *client; 1099 enum clnt_stat clnt_st; 1100 rpcvers_t vers = 0; 1101 1102 client = getclnthandle(host, nconf, NULL); 1103 if (client == NULL) { 1104 return (head); 1105 } 1106 clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 1107 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 1108 (char *)(void *)&head, tottimeout); 1109 if (clnt_st == RPC_SUCCESS) 1110 goto done; 1111 1112 if ((clnt_st != RPC_PROGVERSMISMATCH) && 1113 (clnt_st != RPC_PROGUNAVAIL)) { 1114 rpc_createerr.cf_stat = RPC_RPCBFAILURE; 1115 clnt_geterr(client, &rpc_createerr.cf_error); 1116 goto done; 1117 } 1118 1119 /* fall back to earlier version */ 1120 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 1121 if (vers == RPCBVERS4) { 1122 vers = RPCBVERS; 1123 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 1124 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 1125 (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 1126 (char *)(void *)&head, tottimeout) == RPC_SUCCESS) 1127 goto done; 1128 } 1129 rpc_createerr.cf_stat = RPC_RPCBFAILURE; 1130 clnt_geterr(client, &rpc_createerr.cf_error); 1131 1132 done: 1133 CLNT_DESTROY(client); 1134 return (head); 1135 } 1136 1137 /* 1138 * rpcbinder remote-call-service interface. 1139 * This routine is used to call the rpcbind remote call service 1140 * which will look up a service program in the address maps, and then 1141 * remotely call that routine with the given parameters. This allows 1142 * programs to do a lookup and call in one step. 1143 */ 1144 enum clnt_stat 1145 rpcb_rmtcall(nconf, host, prog, vers, proc, xdrargs, argsp, 1146 xdrres, resp, tout, addr_ptr) 1147 const struct netconfig *nconf; /* Netconfig structure */ 1148 const char *host; /* Remote host name */ 1149 rpcprog_t prog; 1150 rpcvers_t vers; 1151 rpcproc_t proc; /* Remote proc identifiers */ 1152 xdrproc_t xdrargs, xdrres; /* XDR routines */ 1153 caddr_t argsp, resp; /* Argument and Result */ 1154 struct timeval tout; /* Timeout value for this call */ 1155 const struct netbuf *addr_ptr; /* Preallocated netbuf address */ 1156 { 1157 CLIENT *client; 1158 enum clnt_stat stat; 1159 struct r_rpcb_rmtcallargs a; 1160 struct r_rpcb_rmtcallres r; 1161 rpcvers_t rpcb_vers; 1162 1163 stat = 0; 1164 client = getclnthandle(host, nconf, NULL); 1165 if (client == NULL) { 1166 return (RPC_FAILED); 1167 } 1168 /*LINTED const castaway*/ 1169 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&rmttimeout); 1170 a.prog = prog; 1171 a.vers = vers; 1172 a.proc = proc; 1173 a.args.args_val = argsp; 1174 a.xdr_args = xdrargs; 1175 r.addr = NULL; 1176 r.results.results_val = resp; 1177 r.xdr_res = xdrres; 1178 1179 for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) { 1180 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&rpcb_vers); 1181 stat = CLNT_CALL(client, (rpcproc_t)RPCBPROC_CALLIT, 1182 (xdrproc_t) xdr_rpcb_rmtcallargs, (char *)(void *)&a, 1183 (xdrproc_t) xdr_rpcb_rmtcallres, (char *)(void *)&r, tout); 1184 if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) { 1185 struct netbuf *na; 1186 /*LINTED const castaway*/ 1187 na = uaddr2taddr((struct netconfig *) nconf, r.addr); 1188 if (!na) { 1189 stat = RPC_N2AXLATEFAILURE; 1190 /*LINTED const castaway*/ 1191 ((struct netbuf *) addr_ptr)->len = 0; 1192 goto error; 1193 } 1194 if (na->len > addr_ptr->maxlen) { 1195 /* Too long address */ 1196 stat = RPC_FAILED; /* XXX A better error no */ 1197 free(na->buf); 1198 free(na); 1199 /*LINTED const castaway*/ 1200 ((struct netbuf *) addr_ptr)->len = 0; 1201 goto error; 1202 } 1203 memcpy(addr_ptr->buf, na->buf, (size_t)na->len); 1204 /*LINTED const castaway*/ 1205 ((struct netbuf *)addr_ptr)->len = na->len; 1206 free(na->buf); 1207 free(na); 1208 break; 1209 } else if ((stat != RPC_PROGVERSMISMATCH) && 1210 (stat != RPC_PROGUNAVAIL)) { 1211 goto error; 1212 } 1213 } 1214 error: 1215 CLNT_DESTROY(client); 1216 if (r.addr) 1217 xdr_free((xdrproc_t) xdr_wrapstring, (char *)(void *)&r.addr); 1218 return (stat); 1219 } 1220 1221 /* 1222 * Gets the time on the remote host. 1223 * Returns 1 if succeeds else 0. 1224 */ 1225 bool_t 1226 rpcb_gettime(host, timep) 1227 const char *host; 1228 time_t *timep; 1229 { 1230 CLIENT *client = NULL; 1231 void *handle; 1232 struct netconfig *nconf; 1233 rpcvers_t vers; 1234 enum clnt_stat st; 1235 1236 1237 if ((host == NULL) || (host[0] == 0)) { 1238 time(timep); 1239 return (TRUE); 1240 } 1241 1242 if ((handle = __rpc_setconf("netpath")) == NULL) { 1243 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1244 return (FALSE); 1245 } 1246 rpc_createerr.cf_stat = RPC_SUCCESS; 1247 while (client == NULL) { 1248 if ((nconf = __rpc_getconf(handle)) == NULL) { 1249 if (rpc_createerr.cf_stat == RPC_SUCCESS) 1250 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1251 break; 1252 } 1253 client = getclnthandle(host, nconf, NULL); 1254 if (client) 1255 break; 1256 } 1257 __rpc_endconf(handle); 1258 if (client == (CLIENT *) NULL) { 1259 return (FALSE); 1260 } 1261 1262 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 1263 (xdrproc_t) xdr_void, NULL, 1264 (xdrproc_t) xdr_int, (char *)(void *)timep, tottimeout); 1265 1266 if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) { 1267 CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 1268 if (vers == RPCBVERS4) { 1269 /* fall back to earlier version */ 1270 vers = RPCBVERS; 1271 CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 1272 st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 1273 (xdrproc_t) xdr_void, NULL, 1274 (xdrproc_t) xdr_int, (char *)(void *)timep, 1275 tottimeout); 1276 } 1277 } 1278 CLNT_DESTROY(client); 1279 return (st == RPC_SUCCESS? TRUE: FALSE); 1280 } 1281 1282 static bool_t 1283 xdr_netbuf(XDR *xdrs, struct netbuf *objp) 1284 { 1285 bool_t dummy; 1286 void **pp; 1287 1288 if (!xdr_uint32_t(xdrs, (uint32_t *) &objp->maxlen)) { 1289 return (FALSE); 1290 } 1291 pp = &objp->buf; 1292 1293 if (objp->maxlen > RPC_MAXDATASIZE) { 1294 return (FALSE); 1295 } 1296 1297 dummy = xdr_bytes(xdrs, (char **) pp, 1298 (u_int *)&(objp->len), objp->maxlen); 1299 return (dummy); 1300 } 1301 1302 /* 1303 * Converts taddr to universal address. This routine should never 1304 * really be called because local n2a libraries are always provided. 1305 */ 1306 char * 1307 rpcb_taddr2uaddr(struct netconfig *nconf, struct netbuf *taddr) 1308 { 1309 CLIENT *client; 1310 char *uaddr = NULL; 1311 1312 1313 /* parameter checking */ 1314 if (nconf == NULL) { 1315 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1316 return (NULL); 1317 } 1318 if (taddr == NULL) { 1319 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 1320 return (NULL); 1321 } 1322 client = local_rpcb(); 1323 if (! client) { 1324 return (NULL); 1325 } 1326 1327 CLNT_CALL(client, (rpcproc_t)RPCBPROC_TADDR2UADDR, 1328 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 1329 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, tottimeout); 1330 CLNT_DESTROY(client); 1331 return (uaddr); 1332 } 1333 1334 /* 1335 * Converts universal address to netbuf. This routine should never 1336 * really be called because local n2a libraries are always provided. 1337 */ 1338 struct netbuf * 1339 rpcb_uaddr2taddr(struct netconfig *nconf, char *uaddr) 1340 { 1341 CLIENT *client; 1342 struct netbuf *taddr; 1343 1344 1345 /* parameter checking */ 1346 if (nconf == NULL) { 1347 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 1348 return (NULL); 1349 } 1350 if (uaddr == NULL) { 1351 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 1352 return (NULL); 1353 } 1354 client = local_rpcb(); 1355 if (! client) { 1356 return (NULL); 1357 } 1358 1359 taddr = (struct netbuf *)malloc(sizeof (struct netbuf), M_RPC, M_WAITOK|M_ZERO); 1360 if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_UADDR2TADDR, 1361 (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, 1362 (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 1363 tottimeout) != RPC_SUCCESS) { 1364 free(taddr); 1365 taddr = NULL; 1366 } 1367 CLNT_DESTROY(client); 1368 return (taddr); 1369 } 1370 1371 #endif 1372