1/* $NetBSD: rpc_generic.c,v 1.4 2000/09/28 09:07:04 kleink Exp $ */ 2 3/*- 4 * Copyright (c) 2009, Sun Microsystems, 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 Sun Microsystems, 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/* #pragma ident "@(#)rpc_generic.c 1.17 94/04/24 SMI" */ 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: stable/10/lib/libc/rpc/rpc_generic.c 319615 2017-06-06 07:22:26Z delphij $"); 37 38/* 39 * rpc_generic.c, Miscl routines for RPC. 40 * 41 */ 42 43#include "namespace.h" 44#include "reentrant.h" 45#include <sys/types.h> 46#include <sys/param.h> 47#include <sys/socket.h> 48#include <sys/time.h> 49#include <sys/un.h> 50#include <sys/resource.h> 51#include <netinet/in.h> 52#include <arpa/inet.h> 53#include <rpc/rpc.h> 54#include <ctype.h> 55#include <stddef.h> 56#include <stdio.h> 57#include <netdb.h> 58#include <netconfig.h> 59#include <stdlib.h> 60#include <string.h> 61#include <syslog.h> 62#include <rpc/nettype.h> 63#include "un-namespace.h" 64#include "rpc_com.h" 65#include "mt_misc.h" 66 67struct handle { 68 NCONF_HANDLE *nhandle; 69 int nflag; /* Whether NETPATH or NETCONFIG */ 70 int nettype; 71}; 72 73static const struct _rpcnettype { 74 const char *name; 75 const int type; 76} _rpctypelist[] = { 77 { "netpath", _RPC_NETPATH }, 78 { "visible", _RPC_VISIBLE }, 79 { "circuit_v", _RPC_CIRCUIT_V }, 80 { "datagram_v", _RPC_DATAGRAM_V }, 81 { "circuit_n", _RPC_CIRCUIT_N }, 82 { "datagram_n", _RPC_DATAGRAM_N }, 83 { "tcp", _RPC_TCP }, 84 { "udp", _RPC_UDP }, 85 { 0, _RPC_NONE } 86}; 87 88struct netid_af { 89 const char *netid; 90 int af; 91 int protocol; 92}; 93 94static const struct netid_af na_cvt[] = { 95 { "udp", AF_INET, IPPROTO_UDP }, 96 { "tcp", AF_INET, IPPROTO_TCP }, 97#ifdef INET6 98 { "udp6", AF_INET6, IPPROTO_UDP }, 99 { "tcp6", AF_INET6, IPPROTO_TCP }, 100#endif 101 { "local", AF_LOCAL, 0 } 102}; 103 104#if 0 105static char *strlocase(char *); 106#endif 107static int getnettype(const char *); 108 109/* 110 * Cache the result of getrlimit(), so we don't have to do an 111 * expensive call every time. 112 */ 113int 114__rpc_dtbsize(void) 115{ 116 static int tbsize; 117 struct rlimit rl; 118 119 if (tbsize) { 120 return (tbsize); 121 } 122 if (getrlimit(RLIMIT_NOFILE, &rl) == 0) { 123 return (tbsize = (int)rl.rlim_max); 124 } 125 /* 126 * Something wrong. I'll try to save face by returning a 127 * pessimistic number. 128 */ 129 return (32); 130} 131 132 133/* 134 * Find the appropriate buffer size 135 * 136 * size - Size requested 137 */ 138u_int 139/*ARGSUSED*/ 140__rpc_get_t_size(int af, int proto, int size) 141{ 142 int maxsize, defsize; 143 144 maxsize = 256 * 1024; /* XXX */ 145 switch (proto) { 146 case IPPROTO_TCP: 147 defsize = 64 * 1024; /* XXX */ 148 break; 149 case IPPROTO_UDP: 150 defsize = UDPMSGSIZE; 151 break; 152 default: 153 defsize = RPC_MAXDATASIZE; 154 break; 155 } 156 if (size == 0) 157 return defsize; 158 159 /* Check whether the value is within the upper max limit */ 160 return (size > maxsize ? (u_int)maxsize : (u_int)size); 161} 162 163/* 164 * Find the appropriate address buffer size 165 */ 166u_int 167__rpc_get_a_size(int af) 168{ 169 switch (af) { 170 case AF_INET: 171 return sizeof (struct sockaddr_in); 172#ifdef INET6 173 case AF_INET6: 174 return sizeof (struct sockaddr_in6); 175#endif 176 case AF_LOCAL: 177 return sizeof (struct sockaddr_un); 178 default: 179 break; 180 } 181 return ((u_int)RPC_MAXADDRSIZE); 182} 183 184#if 0 185static char * 186strlocase(char *p) 187{ 188 char *t = p; 189 190 for (; *p; p++) 191 if (isupper(*p)) 192 *p = tolower(*p); 193 return (t); 194} 195#endif 196 197/* 198 * Returns the type of the network as defined in <rpc/nettype.h> 199 * If nettype is NULL, it defaults to NETPATH. 200 */ 201static int 202getnettype(const char *nettype) 203{ 204 int i; 205 206 if ((nettype == NULL) || (nettype[0] == 0)) { 207 return (_RPC_NETPATH); /* Default */ 208 } 209 210#if 0 211 nettype = strlocase(nettype); 212#endif 213 for (i = 0; _rpctypelist[i].name; i++) 214 if (strcasecmp(nettype, _rpctypelist[i].name) == 0) { 215 return (_rpctypelist[i].type); 216 } 217 return (_rpctypelist[i].type); 218} 219 220static thread_key_t tcp_key, udp_key; 221static once_t keys_once = ONCE_INITIALIZER; 222static int tcp_key_error, udp_key_error; 223 224static void 225keys_init(void) 226{ 227 228 tcp_key_error = thr_keycreate(&tcp_key, free); 229 udp_key_error = thr_keycreate(&udp_key, free); 230} 231 232/* 233 * For the given nettype (tcp or udp only), return the first structure found. 234 * This should be freed by calling freenetconfigent() 235 */ 236struct netconfig * 237__rpc_getconfip(const char *nettype) 238{ 239 char *netid; 240 char *netid_tcp = (char *) NULL; 241 char *netid_udp = (char *) NULL; 242 static char *netid_tcp_main; 243 static char *netid_udp_main; 244 struct netconfig *dummy; 245 int main_thread; 246 247 if ((main_thread = thr_main())) { 248 netid_udp = netid_udp_main; 249 netid_tcp = netid_tcp_main; 250 } else { 251 if (thr_once(&keys_once, keys_init) != 0 || 252 tcp_key_error != 0 || udp_key_error != 0) 253 return (NULL); 254 netid_tcp = (char *)thr_getspecific(tcp_key); 255 netid_udp = (char *)thr_getspecific(udp_key); 256 } 257 if (!netid_udp && !netid_tcp) { 258 struct netconfig *nconf; 259 void *confighandle; 260 261 if (!(confighandle = setnetconfig())) { 262 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 263 return (NULL); 264 } 265 while ((nconf = getnetconfig(confighandle)) != NULL) { 266 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) { 267 if (strcmp(nconf->nc_proto, NC_TCP) == 0 && 268 netid_tcp == NULL) { 269 netid_tcp = strdup(nconf->nc_netid); 270 if (main_thread) 271 netid_tcp_main = netid_tcp; 272 else 273 thr_setspecific(tcp_key, 274 (void *) netid_tcp); 275 } else 276 if (strcmp(nconf->nc_proto, NC_UDP) == 0 && 277 netid_udp == NULL) { 278 netid_udp = strdup(nconf->nc_netid); 279 if (main_thread) 280 netid_udp_main = netid_udp; 281 else 282 thr_setspecific(udp_key, 283 (void *) netid_udp); 284 } 285 } 286 } 287 endnetconfig(confighandle); 288 } 289 if (strcmp(nettype, "udp") == 0) 290 netid = netid_udp; 291 else if (strcmp(nettype, "tcp") == 0) 292 netid = netid_tcp; 293 else { 294 return (NULL); 295 } 296 if ((netid == NULL) || (netid[0] == 0)) { 297 return (NULL); 298 } 299 dummy = getnetconfigent(netid); 300 return (dummy); 301} 302 303/* 304 * Returns the type of the nettype, which should then be used with 305 * __rpc_getconf(). 306 */ 307void * 308__rpc_setconf(const char *nettype) 309{ 310 struct handle *handle; 311 312 handle = (struct handle *) malloc(sizeof (struct handle)); 313 if (handle == NULL) { 314 return (NULL); 315 } 316 switch (handle->nettype = getnettype(nettype)) { 317 case _RPC_NETPATH: 318 case _RPC_CIRCUIT_N: 319 case _RPC_DATAGRAM_N: 320 if (!(handle->nhandle = setnetpath())) 321 goto failed; 322 handle->nflag = TRUE; 323 break; 324 case _RPC_VISIBLE: 325 case _RPC_CIRCUIT_V: 326 case _RPC_DATAGRAM_V: 327 case _RPC_TCP: 328 case _RPC_UDP: 329 if (!(handle->nhandle = setnetconfig())) { 330 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 331 goto failed; 332 } 333 handle->nflag = FALSE; 334 break; 335 default: 336 goto failed; 337 } 338 339 return (handle); 340 341failed: 342 free(handle); 343 return (NULL); 344} 345 346/* 347 * Returns the next netconfig struct for the given "net" type. 348 * __rpc_setconf() should have been called previously. 349 */ 350struct netconfig * 351__rpc_getconf(void *vhandle) 352{ 353 struct handle *handle; 354 struct netconfig *nconf; 355 356 handle = (struct handle *)vhandle; 357 if (handle == NULL) { 358 return (NULL); 359 } 360 for (;;) { 361 if (handle->nflag) 362 nconf = getnetpath(handle->nhandle); 363 else 364 nconf = getnetconfig(handle->nhandle); 365 if (nconf == NULL) 366 break; 367 if ((nconf->nc_semantics != NC_TPI_CLTS) && 368 (nconf->nc_semantics != NC_TPI_COTS) && 369 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 370 continue; 371 switch (handle->nettype) { 372 case _RPC_VISIBLE: 373 if (!(nconf->nc_flag & NC_VISIBLE)) 374 continue; 375 /* FALLTHROUGH */ 376 case _RPC_NETPATH: /* Be happy */ 377 break; 378 case _RPC_CIRCUIT_V: 379 if (!(nconf->nc_flag & NC_VISIBLE)) 380 continue; 381 /* FALLTHROUGH */ 382 case _RPC_CIRCUIT_N: 383 if ((nconf->nc_semantics != NC_TPI_COTS) && 384 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 385 continue; 386 break; 387 case _RPC_DATAGRAM_V: 388 if (!(nconf->nc_flag & NC_VISIBLE)) 389 continue; 390 /* FALLTHROUGH */ 391 case _RPC_DATAGRAM_N: 392 if (nconf->nc_semantics != NC_TPI_CLTS) 393 continue; 394 break; 395 case _RPC_TCP: 396 if (((nconf->nc_semantics != NC_TPI_COTS) && 397 (nconf->nc_semantics != NC_TPI_COTS_ORD)) || 398 (strcmp(nconf->nc_protofmly, NC_INET) 399#ifdef INET6 400 && strcmp(nconf->nc_protofmly, NC_INET6)) 401#else 402 ) 403#endif 404 || 405 strcmp(nconf->nc_proto, NC_TCP)) 406 continue; 407 break; 408 case _RPC_UDP: 409 if ((nconf->nc_semantics != NC_TPI_CLTS) || 410 (strcmp(nconf->nc_protofmly, NC_INET) 411#ifdef INET6 412 && strcmp(nconf->nc_protofmly, NC_INET6)) 413#else 414 ) 415#endif 416 || 417 strcmp(nconf->nc_proto, NC_UDP)) 418 continue; 419 break; 420 } 421 break; 422 } 423 return (nconf); 424} 425 426void 427__rpc_endconf(void *vhandle) 428{ 429 struct handle *handle; 430 431 handle = (struct handle *) vhandle; 432 if (handle == NULL) { 433 return; 434 } 435 if (handle->nflag) { 436 endnetpath(handle->nhandle); 437 } else { 438 endnetconfig(handle->nhandle); 439 } 440 free(handle); 441} 442 443/* 444 * Used to ping the NULL procedure for clnt handle. 445 * Returns NULL if fails, else a non-NULL pointer. 446 */ 447void * 448rpc_nullproc(CLIENT *clnt) 449{ 450 struct timeval TIMEOUT = {25, 0}; 451 452 if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL, 453 (xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) { 454 return (NULL); 455 } 456 return ((void *) clnt); 457} 458 459/* 460 * Try all possible transports until 461 * one succeeds in finding the netconf for the given fd. 462 */ 463struct netconfig * 464__rpcgettp(int fd) 465{ 466 const char *netid; 467 struct __rpc_sockinfo si; 468 469 if (!__rpc_fd2sockinfo(fd, &si)) 470 return NULL; 471 472 if (!__rpc_sockinfo2netid(&si, &netid)) 473 return NULL; 474 475 /*LINTED const castaway*/ 476 return getnetconfigent((char *)netid); 477} 478 479int 480__rpc_fd2sockinfo(int fd, struct __rpc_sockinfo *sip) 481{ 482 socklen_t len; 483 int type, proto; 484 struct sockaddr_storage ss; 485 486 len = sizeof ss; 487 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &len) < 0) 488 return 0; 489 sip->si_alen = len; 490 491 len = sizeof type; 492 if (_getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &len) < 0) 493 return 0; 494 495 /* XXX */ 496 if (ss.ss_family != AF_LOCAL) { 497 if (type == SOCK_STREAM) 498 proto = IPPROTO_TCP; 499 else if (type == SOCK_DGRAM) 500 proto = IPPROTO_UDP; 501 else 502 return 0; 503 } else 504 proto = 0; 505 506 sip->si_af = ss.ss_family; 507 sip->si_proto = proto; 508 sip->si_socktype = type; 509 510 return 1; 511} 512 513/* 514 * Linear search, but the number of entries is small. 515 */ 516int 517__rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip) 518{ 519 int i; 520 521 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++) 522 if (strcmp(na_cvt[i].netid, nconf->nc_netid) == 0 || ( 523 strcmp(nconf->nc_netid, "unix") == 0 && 524 strcmp(na_cvt[i].netid, "local") == 0)) { 525 sip->si_af = na_cvt[i].af; 526 sip->si_proto = na_cvt[i].protocol; 527 sip->si_socktype = 528 __rpc_seman2socktype((int)nconf->nc_semantics); 529 if (sip->si_socktype == -1) 530 return 0; 531 sip->si_alen = __rpc_get_a_size(sip->si_af); 532 return 1; 533 } 534 535 return 0; 536} 537 538int 539__rpc_nconf2fd(const struct netconfig *nconf) 540{ 541 struct __rpc_sockinfo si; 542 543 if (!__rpc_nconf2sockinfo(nconf, &si)) 544 return 0; 545 546 return _socket(si.si_af, si.si_socktype, si.si_proto); 547} 548 549int 550__rpc_sockinfo2netid(struct __rpc_sockinfo *sip, const char **netid) 551{ 552 int i; 553 struct netconfig *nconf; 554 555 nconf = getnetconfigent("local"); 556 557 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++) { 558 if (na_cvt[i].af == sip->si_af && 559 na_cvt[i].protocol == sip->si_proto) { 560 if (strcmp(na_cvt[i].netid, "local") == 0 && nconf == NULL) { 561 if (netid) 562 *netid = "unix"; 563 } else { 564 if (netid) 565 *netid = na_cvt[i].netid; 566 } 567 if (nconf != NULL) 568 freenetconfigent(nconf); 569 return 1; 570 } 571 } 572 if (nconf != NULL) 573 freenetconfigent(nconf); 574 575 return 0; 576} 577 578char * 579taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf) 580{ 581 struct __rpc_sockinfo si; 582 583 if (!__rpc_nconf2sockinfo(nconf, &si)) 584 return NULL; 585 return __rpc_taddr2uaddr_af(si.si_af, nbuf); 586} 587 588struct netbuf * 589uaddr2taddr(const struct netconfig *nconf, const char *uaddr) 590{ 591 struct __rpc_sockinfo si; 592 593 if (!__rpc_nconf2sockinfo(nconf, &si)) 594 return NULL; 595 return __rpc_uaddr2taddr_af(si.si_af, uaddr); 596} 597 598char * 599__rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf) 600{ 601 char *ret; 602 struct sockaddr_in *sin; 603 struct sockaddr_un *sun; 604 char namebuf[INET_ADDRSTRLEN]; 605#ifdef INET6 606 struct sockaddr_in6 *sin6; 607 char namebuf6[INET6_ADDRSTRLEN]; 608#endif 609 u_int16_t port; 610 611 switch (af) { 612 case AF_INET: 613 if (nbuf->len < sizeof(*sin)) 614 return NULL; 615 sin = nbuf->buf; 616 if (inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf) 617 == NULL) 618 return NULL; 619 port = ntohs(sin->sin_port); 620 if (asprintf(&ret, "%s.%u.%u", namebuf, ((u_int32_t)port) >> 8, 621 port & 0xff) < 0) 622 return NULL; 623 break; 624#ifdef INET6 625 case AF_INET6: 626 if (nbuf->len < sizeof(*sin6)) 627 return NULL; 628 sin6 = nbuf->buf; 629 if (inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6) 630 == NULL) 631 return NULL; 632 port = ntohs(sin6->sin6_port); 633 if (asprintf(&ret, "%s.%u.%u", namebuf6, ((u_int32_t)port) >> 8, 634 port & 0xff) < 0) 635 return NULL; 636 break; 637#endif 638 case AF_LOCAL: 639 sun = nbuf->buf; 640 if (asprintf(&ret, "%.*s", (int)(sun->sun_len - 641 offsetof(struct sockaddr_un, sun_path)), 642 sun->sun_path) < 0) 643 return (NULL); 644 break; 645 default: 646 return NULL; 647 } 648 649 return ret; 650} 651 652struct netbuf * 653__rpc_uaddr2taddr_af(int af, const char *uaddr) 654{ 655 struct netbuf *ret = NULL; 656 char *addrstr, *p; 657 unsigned port, portlo, porthi; 658 struct sockaddr_in *sin; 659#ifdef INET6 660 struct sockaddr_in6 *sin6; 661#endif 662 struct sockaddr_un *sun; 663 664 port = 0; 665 sin = NULL; 666 667 if (uaddr == NULL) 668 return NULL; 669 670 addrstr = strdup(uaddr); 671 if (addrstr == NULL) 672 return NULL; 673 674 /* 675 * AF_LOCAL addresses are expected to be absolute 676 * pathnames, anything else will be AF_INET or AF_INET6. 677 */ 678 if (*addrstr != '/') { 679 p = strrchr(addrstr, '.'); 680 if (p == NULL) 681 goto out; 682 portlo = (unsigned)atoi(p + 1); 683 *p = '\0'; 684 685 p = strrchr(addrstr, '.'); 686 if (p == NULL) 687 goto out; 688 porthi = (unsigned)atoi(p + 1); 689 *p = '\0'; 690 port = (porthi << 8) | portlo; 691 } 692 693 ret = (struct netbuf *)malloc(sizeof *ret); 694 if (ret == NULL) 695 goto out; 696 697 switch (af) { 698 case AF_INET: 699 sin = (struct sockaddr_in *)malloc(sizeof *sin); 700 if (sin == NULL) 701 goto out; 702 memset(sin, 0, sizeof *sin); 703 sin->sin_family = AF_INET; 704 sin->sin_port = htons(port); 705 if (inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) { 706 free(sin); 707 free(ret); 708 ret = NULL; 709 goto out; 710 } 711 sin->sin_len = ret->maxlen = ret->len = sizeof *sin; 712 ret->buf = sin; 713 break; 714#ifdef INET6 715 case AF_INET6: 716 sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6); 717 if (sin6 == NULL) 718 goto out; 719 memset(sin6, 0, sizeof *sin6); 720 sin6->sin6_family = AF_INET6; 721 sin6->sin6_port = htons(port); 722 if (inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) { 723 free(sin6); 724 free(ret); 725 ret = NULL; 726 goto out; 727 } 728 sin6->sin6_len = ret->maxlen = ret->len = sizeof *sin6; 729 ret->buf = sin6; 730 break; 731#endif 732 case AF_LOCAL: 733 sun = (struct sockaddr_un *)malloc(sizeof *sun); 734 if (sun == NULL) 735 goto out; 736 memset(sun, 0, sizeof *sun); 737 sun->sun_family = AF_LOCAL; 738 strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1); 739 ret->len = ret->maxlen = sun->sun_len = SUN_LEN(sun); 740 ret->buf = sun; 741 break; 742 default: 743 break; 744 } 745out: 746 free(addrstr); 747 return ret; 748} 749 750int 751__rpc_seman2socktype(int semantics) 752{ 753 switch (semantics) { 754 case NC_TPI_CLTS: 755 return SOCK_DGRAM; 756 case NC_TPI_COTS_ORD: 757 return SOCK_STREAM; 758 case NC_TPI_RAW: 759 return SOCK_RAW; 760 default: 761 break; 762 } 763 764 return -1; 765} 766 767int 768__rpc_socktype2seman(int socktype) 769{ 770 switch (socktype) { 771 case SOCK_DGRAM: 772 return NC_TPI_CLTS; 773 case SOCK_STREAM: 774 return NC_TPI_COTS_ORD; 775 case SOCK_RAW: 776 return NC_TPI_RAW; 777 default: 778 break; 779 } 780 781 return -1; 782} 783 784/* 785 * XXXX - IPv6 scope IDs can't be handled in universal addresses. 786 * Here, we compare the original server address to that of the RPC 787 * service we just received back from a call to rpcbind on the remote 788 * machine. If they are both "link local" or "site local", copy 789 * the scope id of the server address over to the service address. 790 */ 791int 792__rpc_fixup_addr(struct netbuf *new, const struct netbuf *svc) 793{ 794#ifdef INET6 795 struct sockaddr *sa_new, *sa_svc; 796 struct sockaddr_in6 *sin6_new, *sin6_svc; 797 798 sa_svc = (struct sockaddr *)svc->buf; 799 sa_new = (struct sockaddr *)new->buf; 800 801 if (sa_new->sa_family == sa_svc->sa_family && 802 sa_new->sa_family == AF_INET6) { 803 sin6_new = (struct sockaddr_in6 *)new->buf; 804 sin6_svc = (struct sockaddr_in6 *)svc->buf; 805 806 if ((IN6_IS_ADDR_LINKLOCAL(&sin6_new->sin6_addr) && 807 IN6_IS_ADDR_LINKLOCAL(&sin6_svc->sin6_addr)) || 808 (IN6_IS_ADDR_SITELOCAL(&sin6_new->sin6_addr) && 809 IN6_IS_ADDR_SITELOCAL(&sin6_svc->sin6_addr))) { 810 sin6_new->sin6_scope_id = sin6_svc->sin6_scope_id; 811 } 812 } 813#endif 814 return 1; 815} 816 817int 818__rpc_sockisbound(int fd) 819{ 820 struct sockaddr_storage ss; 821 socklen_t slen; 822 823 slen = sizeof (struct sockaddr_storage); 824 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) 825 return 0; 826 827 switch (ss.ss_family) { 828 case AF_INET: 829 return (((struct sockaddr_in *) 830 (void *)&ss)->sin_port != 0); 831#ifdef INET6 832 case AF_INET6: 833 return (((struct sockaddr_in6 *) 834 (void *)&ss)->sin6_port != 0); 835#endif 836 case AF_LOCAL: 837 /* XXX check this */ 838 return (((struct sockaddr_un *) 839 (void *)&ss)->sun_path[0] != '\0'); 840 default: 841 break; 842 } 843 844 return 0; 845} 846