1 /* $NetBSD: rpc_generic.c,v 1.4 2000/09/28 09:07:04 kleink Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 /* 32 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 33 */ 34 35 /* #pragma ident "@(#)rpc_generic.c 1.17 94/04/24 SMI" */ 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 /* 40 * rpc_generic.c, Miscl routines for RPC. 41 * 42 */ 43 44 #include "namespace.h" 45 #include "reentrant.h" 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <sys/socket.h> 49 #include <sys/time.h> 50 #include <sys/un.h> 51 #include <sys/resource.h> 52 #include <netinet/in.h> 53 #include <arpa/inet.h> 54 #include <rpc/rpc.h> 55 #include <ctype.h> 56 #include <stddef.h> 57 #include <stdio.h> 58 #include <netdb.h> 59 #include <netconfig.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <syslog.h> 63 #include <rpc/nettype.h> 64 #include "un-namespace.h" 65 #include "rpc_com.h" 66 #include "mt_misc.h" 67 68 struct handle { 69 NCONF_HANDLE *nhandle; 70 int nflag; /* Whether NETPATH or NETCONFIG */ 71 int nettype; 72 }; 73 74 static const struct _rpcnettype { 75 const char *name; 76 const int type; 77 } _rpctypelist[] = { 78 { "netpath", _RPC_NETPATH }, 79 { "visible", _RPC_VISIBLE }, 80 { "circuit_v", _RPC_CIRCUIT_V }, 81 { "datagram_v", _RPC_DATAGRAM_V }, 82 { "circuit_n", _RPC_CIRCUIT_N }, 83 { "datagram_n", _RPC_DATAGRAM_N }, 84 { "tcp", _RPC_TCP }, 85 { "udp", _RPC_UDP }, 86 { 0, _RPC_NONE } 87 }; 88 89 struct netid_af { 90 const char *netid; 91 int af; 92 int protocol; 93 }; 94 95 static const struct netid_af na_cvt[] = { 96 { "udp", AF_INET, IPPROTO_UDP }, 97 { "tcp", AF_INET, IPPROTO_TCP }, 98 #ifdef INET6 99 { "udp6", AF_INET6, IPPROTO_UDP }, 100 { "tcp6", AF_INET6, IPPROTO_TCP }, 101 #endif 102 { "local", AF_LOCAL, 0 } 103 }; 104 105 #if 0 106 static char *strlocase(char *); 107 #endif 108 static int getnettype(const char *); 109 110 /* 111 * Cache the result of getrlimit(), so we don't have to do an 112 * expensive call every time. 113 */ 114 int 115 __rpc_dtbsize() 116 { 117 static int tbsize; 118 struct rlimit rl; 119 120 if (tbsize) { 121 return (tbsize); 122 } 123 if (getrlimit(RLIMIT_NOFILE, &rl) == 0) { 124 return (tbsize = (int)rl.rlim_max); 125 } 126 /* 127 * Something wrong. I'll try to save face by returning a 128 * pessimistic number. 129 */ 130 return (32); 131 } 132 133 134 /* 135 * Find the appropriate buffer size 136 */ 137 u_int 138 /*ARGSUSED*/ 139 __rpc_get_t_size(af, proto, size) 140 int af, proto; 141 int size; /* Size requested */ 142 { 143 int maxsize, defsize; 144 145 maxsize = 256 * 1024; /* XXX */ 146 switch (proto) { 147 case IPPROTO_TCP: 148 defsize = 64 * 1024; /* XXX */ 149 break; 150 case IPPROTO_UDP: 151 defsize = UDPMSGSIZE; 152 break; 153 default: 154 defsize = RPC_MAXDATASIZE; 155 break; 156 } 157 if (size == 0) 158 return defsize; 159 160 /* Check whether the value is within the upper max limit */ 161 return (size > maxsize ? (u_int)maxsize : (u_int)size); 162 } 163 164 /* 165 * Find the appropriate address buffer size 166 */ 167 u_int 168 __rpc_get_a_size(af) 169 int af; 170 { 171 switch (af) { 172 case AF_INET: 173 return sizeof (struct sockaddr_in); 174 #ifdef INET6 175 case AF_INET6: 176 return sizeof (struct sockaddr_in6); 177 #endif 178 case AF_LOCAL: 179 return sizeof (struct sockaddr_un); 180 default: 181 break; 182 } 183 return ((u_int)RPC_MAXADDRSIZE); 184 } 185 186 #if 0 187 static char * 188 strlocase(p) 189 char *p; 190 { 191 char *t = p; 192 193 for (; *p; p++) 194 if (isupper(*p)) 195 *p = tolower(*p); 196 return (t); 197 } 198 #endif 199 200 /* 201 * Returns the type of the network as defined in <rpc/nettype.h> 202 * If nettype is NULL, it defaults to NETPATH. 203 */ 204 static int 205 getnettype(nettype) 206 const char *nettype; 207 { 208 int i; 209 210 if ((nettype == NULL) || (nettype[0] == 0)) { 211 return (_RPC_NETPATH); /* Default */ 212 } 213 214 #if 0 215 nettype = strlocase(nettype); 216 #endif 217 for (i = 0; _rpctypelist[i].name; i++) 218 if (strcasecmp(nettype, _rpctypelist[i].name) == 0) { 219 return (_rpctypelist[i].type); 220 } 221 return (_rpctypelist[i].type); 222 } 223 224 static thread_key_t tcp_key, udp_key; 225 static once_t keys_once = ONCE_INITIALIZER; 226 static int tcp_key_error, udp_key_error; 227 228 static void 229 keys_init(void) 230 { 231 232 tcp_key_error = thr_keycreate(&tcp_key, free); 233 udp_key_error = thr_keycreate(&udp_key, free); 234 } 235 236 /* 237 * For the given nettype (tcp or udp only), return the first structure found. 238 * This should be freed by calling freenetconfigent() 239 */ 240 struct netconfig * 241 __rpc_getconfip(nettype) 242 const char *nettype; 243 { 244 char *netid; 245 char *netid_tcp = (char *) NULL; 246 char *netid_udp = (char *) NULL; 247 static char *netid_tcp_main; 248 static char *netid_udp_main; 249 struct netconfig *dummy; 250 int main_thread; 251 252 if ((main_thread = thr_main())) { 253 netid_udp = netid_udp_main; 254 netid_tcp = netid_tcp_main; 255 } else { 256 if (thr_once(&keys_once, keys_init) != 0 || 257 tcp_key_error != 0 || udp_key_error != 0) 258 return (NULL); 259 netid_tcp = (char *)thr_getspecific(tcp_key); 260 netid_udp = (char *)thr_getspecific(udp_key); 261 } 262 if (!netid_udp && !netid_tcp) { 263 struct netconfig *nconf; 264 void *confighandle; 265 266 if (!(confighandle = setnetconfig())) { 267 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 268 return (NULL); 269 } 270 while ((nconf = getnetconfig(confighandle)) != NULL) { 271 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) { 272 if (strcmp(nconf->nc_proto, NC_TCP) == 0 && 273 netid_tcp == NULL) { 274 netid_tcp = strdup(nconf->nc_netid); 275 if (main_thread) 276 netid_tcp_main = netid_tcp; 277 else 278 thr_setspecific(tcp_key, 279 (void *) netid_tcp); 280 } else 281 if (strcmp(nconf->nc_proto, NC_UDP) == 0 && 282 netid_udp == NULL) { 283 netid_udp = strdup(nconf->nc_netid); 284 if (main_thread) 285 netid_udp_main = netid_udp; 286 else 287 thr_setspecific(udp_key, 288 (void *) netid_udp); 289 } 290 } 291 } 292 endnetconfig(confighandle); 293 } 294 if (strcmp(nettype, "udp") == 0) 295 netid = netid_udp; 296 else if (strcmp(nettype, "tcp") == 0) 297 netid = netid_tcp; 298 else { 299 return (NULL); 300 } 301 if ((netid == NULL) || (netid[0] == 0)) { 302 return (NULL); 303 } 304 dummy = getnetconfigent(netid); 305 return (dummy); 306 } 307 308 /* 309 * Returns the type of the nettype, which should then be used with 310 * __rpc_getconf(). 311 */ 312 void * 313 __rpc_setconf(nettype) 314 const char *nettype; 315 { 316 struct handle *handle; 317 318 handle = (struct handle *) malloc(sizeof (struct handle)); 319 if (handle == NULL) { 320 return (NULL); 321 } 322 switch (handle->nettype = getnettype(nettype)) { 323 case _RPC_NETPATH: 324 case _RPC_CIRCUIT_N: 325 case _RPC_DATAGRAM_N: 326 if (!(handle->nhandle = setnetpath())) 327 goto failed; 328 handle->nflag = TRUE; 329 break; 330 case _RPC_VISIBLE: 331 case _RPC_CIRCUIT_V: 332 case _RPC_DATAGRAM_V: 333 case _RPC_TCP: 334 case _RPC_UDP: 335 if (!(handle->nhandle = setnetconfig())) { 336 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 337 goto failed; 338 } 339 handle->nflag = FALSE; 340 break; 341 default: 342 goto failed; 343 } 344 345 return (handle); 346 347 failed: 348 free(handle); 349 return (NULL); 350 } 351 352 /* 353 * Returns the next netconfig struct for the given "net" type. 354 * __rpc_setconf() should have been called previously. 355 */ 356 struct netconfig * 357 __rpc_getconf(vhandle) 358 void *vhandle; 359 { 360 struct handle *handle; 361 struct netconfig *nconf; 362 363 handle = (struct handle *)vhandle; 364 if (handle == NULL) { 365 return (NULL); 366 } 367 for (;;) { 368 if (handle->nflag) 369 nconf = getnetpath(handle->nhandle); 370 else 371 nconf = getnetconfig(handle->nhandle); 372 if (nconf == NULL) 373 break; 374 if ((nconf->nc_semantics != NC_TPI_CLTS) && 375 (nconf->nc_semantics != NC_TPI_COTS) && 376 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 377 continue; 378 switch (handle->nettype) { 379 case _RPC_VISIBLE: 380 if (!(nconf->nc_flag & NC_VISIBLE)) 381 continue; 382 /* FALLTHROUGH */ 383 case _RPC_NETPATH: /* Be happy */ 384 break; 385 case _RPC_CIRCUIT_V: 386 if (!(nconf->nc_flag & NC_VISIBLE)) 387 continue; 388 /* FALLTHROUGH */ 389 case _RPC_CIRCUIT_N: 390 if ((nconf->nc_semantics != NC_TPI_COTS) && 391 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 392 continue; 393 break; 394 case _RPC_DATAGRAM_V: 395 if (!(nconf->nc_flag & NC_VISIBLE)) 396 continue; 397 /* FALLTHROUGH */ 398 case _RPC_DATAGRAM_N: 399 if (nconf->nc_semantics != NC_TPI_CLTS) 400 continue; 401 break; 402 case _RPC_TCP: 403 if (((nconf->nc_semantics != NC_TPI_COTS) && 404 (nconf->nc_semantics != NC_TPI_COTS_ORD)) || 405 (strcmp(nconf->nc_protofmly, NC_INET) 406 #ifdef INET6 407 && strcmp(nconf->nc_protofmly, NC_INET6)) 408 #else 409 ) 410 #endif 411 || 412 strcmp(nconf->nc_proto, NC_TCP)) 413 continue; 414 break; 415 case _RPC_UDP: 416 if ((nconf->nc_semantics != NC_TPI_CLTS) || 417 (strcmp(nconf->nc_protofmly, NC_INET) 418 #ifdef INET6 419 && strcmp(nconf->nc_protofmly, NC_INET6)) 420 #else 421 ) 422 #endif 423 || 424 strcmp(nconf->nc_proto, NC_UDP)) 425 continue; 426 break; 427 } 428 break; 429 } 430 return (nconf); 431 } 432 433 void 434 __rpc_endconf(vhandle) 435 void * vhandle; 436 { 437 struct handle *handle; 438 439 handle = (struct handle *) vhandle; 440 if (handle == NULL) { 441 return; 442 } 443 if (handle->nflag) { 444 endnetpath(handle->nhandle); 445 } else { 446 endnetconfig(handle->nhandle); 447 } 448 free(handle); 449 } 450 451 /* 452 * Used to ping the NULL procedure for clnt handle. 453 * Returns NULL if fails, else a non-NULL pointer. 454 */ 455 void * 456 rpc_nullproc(clnt) 457 CLIENT *clnt; 458 { 459 struct timeval TIMEOUT = {25, 0}; 460 461 if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL, 462 (xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) { 463 return (NULL); 464 } 465 return ((void *) clnt); 466 } 467 468 /* 469 * Try all possible transports until 470 * one succeeds in finding the netconf for the given fd. 471 */ 472 struct netconfig * 473 __rpcgettp(fd) 474 int fd; 475 { 476 const char *netid; 477 struct __rpc_sockinfo si; 478 479 if (!__rpc_fd2sockinfo(fd, &si)) 480 return NULL; 481 482 if (!__rpc_sockinfo2netid(&si, &netid)) 483 return NULL; 484 485 /*LINTED const castaway*/ 486 return getnetconfigent((char *)netid); 487 } 488 489 int 490 __rpc_fd2sockinfo(int fd, struct __rpc_sockinfo *sip) 491 { 492 socklen_t len; 493 int type, proto; 494 struct sockaddr_storage ss; 495 496 len = sizeof ss; 497 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &len) < 0) 498 return 0; 499 sip->si_alen = len; 500 501 len = sizeof type; 502 if (_getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &len) < 0) 503 return 0; 504 505 /* XXX */ 506 if (ss.ss_family != AF_LOCAL) { 507 if (type == SOCK_STREAM) 508 proto = IPPROTO_TCP; 509 else if (type == SOCK_DGRAM) 510 proto = IPPROTO_UDP; 511 else 512 return 0; 513 } else 514 proto = 0; 515 516 sip->si_af = ss.ss_family; 517 sip->si_proto = proto; 518 sip->si_socktype = type; 519 520 return 1; 521 } 522 523 /* 524 * Linear search, but the number of entries is small. 525 */ 526 int 527 __rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip) 528 { 529 int i; 530 531 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++) 532 if (strcmp(na_cvt[i].netid, nconf->nc_netid) == 0 || ( 533 strcmp(nconf->nc_netid, "unix") == 0 && 534 strcmp(na_cvt[i].netid, "local") == 0)) { 535 sip->si_af = na_cvt[i].af; 536 sip->si_proto = na_cvt[i].protocol; 537 sip->si_socktype = 538 __rpc_seman2socktype((int)nconf->nc_semantics); 539 if (sip->si_socktype == -1) 540 return 0; 541 sip->si_alen = __rpc_get_a_size(sip->si_af); 542 return 1; 543 } 544 545 return 0; 546 } 547 548 int 549 __rpc_nconf2fd(const struct netconfig *nconf) 550 { 551 struct __rpc_sockinfo si; 552 553 if (!__rpc_nconf2sockinfo(nconf, &si)) 554 return 0; 555 556 return _socket(si.si_af, si.si_socktype, si.si_proto); 557 } 558 559 int 560 __rpc_sockinfo2netid(struct __rpc_sockinfo *sip, const char **netid) 561 { 562 int i; 563 struct netconfig *nconf; 564 565 nconf = getnetconfigent("local"); 566 567 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++) { 568 if (na_cvt[i].af == sip->si_af && 569 na_cvt[i].protocol == sip->si_proto) { 570 if (strcmp(na_cvt[i].netid, "local") == 0 && nconf == NULL) { 571 if (netid) 572 *netid = "unix"; 573 } else { 574 if (netid) 575 *netid = na_cvt[i].netid; 576 } 577 if (nconf != NULL) 578 freenetconfigent(nconf); 579 return 1; 580 } 581 } 582 if (nconf != NULL) 583 freenetconfigent(nconf); 584 585 return 0; 586 } 587 588 char * 589 taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf) 590 { 591 struct __rpc_sockinfo si; 592 593 if (!__rpc_nconf2sockinfo(nconf, &si)) 594 return NULL; 595 return __rpc_taddr2uaddr_af(si.si_af, nbuf); 596 } 597 598 struct netbuf * 599 uaddr2taddr(const struct netconfig *nconf, const char *uaddr) 600 { 601 struct __rpc_sockinfo si; 602 603 if (!__rpc_nconf2sockinfo(nconf, &si)) 604 return NULL; 605 return __rpc_uaddr2taddr_af(si.si_af, uaddr); 606 } 607 608 char * 609 __rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf) 610 { 611 char *ret; 612 struct sockaddr_in *sin; 613 struct sockaddr_un *sun; 614 char namebuf[INET_ADDRSTRLEN]; 615 #ifdef INET6 616 struct sockaddr_in6 *sin6; 617 char namebuf6[INET6_ADDRSTRLEN]; 618 #endif 619 u_int16_t port; 620 621 switch (af) { 622 case AF_INET: 623 sin = nbuf->buf; 624 if (inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf) 625 == NULL) 626 return NULL; 627 port = ntohs(sin->sin_port); 628 if (asprintf(&ret, "%s.%u.%u", namebuf, ((u_int32_t)port) >> 8, 629 port & 0xff) < 0) 630 return NULL; 631 break; 632 #ifdef INET6 633 case AF_INET6: 634 sin6 = nbuf->buf; 635 if (inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6) 636 == NULL) 637 return NULL; 638 port = ntohs(sin6->sin6_port); 639 if (asprintf(&ret, "%s.%u.%u", namebuf6, ((u_int32_t)port) >> 8, 640 port & 0xff) < 0) 641 return NULL; 642 break; 643 #endif 644 case AF_LOCAL: 645 sun = nbuf->buf; 646 if (asprintf(&ret, "%.*s", (int)(sun->sun_len - 647 offsetof(struct sockaddr_un, sun_path)), 648 sun->sun_path) < 0) 649 return (NULL); 650 break; 651 default: 652 return NULL; 653 } 654 655 return ret; 656 } 657 658 struct netbuf * 659 __rpc_uaddr2taddr_af(int af, const char *uaddr) 660 { 661 struct netbuf *ret = NULL; 662 char *addrstr, *p; 663 unsigned port, portlo, porthi; 664 struct sockaddr_in *sin; 665 #ifdef INET6 666 struct sockaddr_in6 *sin6; 667 #endif 668 struct sockaddr_un *sun; 669 670 port = 0; 671 sin = NULL; 672 addrstr = strdup(uaddr); 673 if (addrstr == NULL) 674 return NULL; 675 676 /* 677 * AF_LOCAL addresses are expected to be absolute 678 * pathnames, anything else will be AF_INET or AF_INET6. 679 */ 680 if (*addrstr != '/') { 681 p = strrchr(addrstr, '.'); 682 if (p == NULL) 683 goto out; 684 portlo = (unsigned)atoi(p + 1); 685 *p = '\0'; 686 687 p = strrchr(addrstr, '.'); 688 if (p == NULL) 689 goto out; 690 porthi = (unsigned)atoi(p + 1); 691 *p = '\0'; 692 port = (porthi << 8) | portlo; 693 } 694 695 ret = (struct netbuf *)malloc(sizeof *ret); 696 if (ret == NULL) 697 goto out; 698 699 switch (af) { 700 case AF_INET: 701 sin = (struct sockaddr_in *)malloc(sizeof *sin); 702 if (sin == NULL) 703 goto out; 704 memset(sin, 0, sizeof *sin); 705 sin->sin_family = AF_INET; 706 sin->sin_port = htons(port); 707 if (inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) { 708 free(sin); 709 free(ret); 710 ret = NULL; 711 goto out; 712 } 713 sin->sin_len = ret->maxlen = ret->len = sizeof *sin; 714 ret->buf = sin; 715 break; 716 #ifdef INET6 717 case AF_INET6: 718 sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6); 719 if (sin6 == NULL) 720 goto out; 721 memset(sin6, 0, sizeof *sin6); 722 sin6->sin6_family = AF_INET6; 723 sin6->sin6_port = htons(port); 724 if (inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) { 725 free(sin6); 726 free(ret); 727 ret = NULL; 728 goto out; 729 } 730 sin6->sin6_len = ret->maxlen = ret->len = sizeof *sin6; 731 ret->buf = sin6; 732 break; 733 #endif 734 case AF_LOCAL: 735 sun = (struct sockaddr_un *)malloc(sizeof *sun); 736 if (sun == NULL) 737 goto out; 738 memset(sun, 0, sizeof *sun); 739 sun->sun_family = AF_LOCAL; 740 strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1); 741 ret->len = ret->maxlen = sun->sun_len = SUN_LEN(sun); 742 ret->buf = sun; 743 break; 744 default: 745 break; 746 } 747 out: 748 free(addrstr); 749 return ret; 750 } 751 752 int 753 __rpc_seman2socktype(int semantics) 754 { 755 switch (semantics) { 756 case NC_TPI_CLTS: 757 return SOCK_DGRAM; 758 case NC_TPI_COTS_ORD: 759 return SOCK_STREAM; 760 case NC_TPI_RAW: 761 return SOCK_RAW; 762 default: 763 break; 764 } 765 766 return -1; 767 } 768 769 int 770 __rpc_socktype2seman(int socktype) 771 { 772 switch (socktype) { 773 case SOCK_DGRAM: 774 return NC_TPI_CLTS; 775 case SOCK_STREAM: 776 return NC_TPI_COTS_ORD; 777 case SOCK_RAW: 778 return NC_TPI_RAW; 779 default: 780 break; 781 } 782 783 return -1; 784 } 785 786 /* 787 * XXXX - IPv6 scope IDs can't be handled in universal addresses. 788 * Here, we compare the original server address to that of the RPC 789 * service we just received back from a call to rpcbind on the remote 790 * machine. If they are both "link local" or "site local", copy 791 * the scope id of the server address over to the service address. 792 */ 793 int 794 __rpc_fixup_addr(struct netbuf *new, const struct netbuf *svc) 795 { 796 #ifdef INET6 797 struct sockaddr *sa_new, *sa_svc; 798 struct sockaddr_in6 *sin6_new, *sin6_svc; 799 800 sa_svc = (struct sockaddr *)svc->buf; 801 sa_new = (struct sockaddr *)new->buf; 802 803 if (sa_new->sa_family == sa_svc->sa_family && 804 sa_new->sa_family == AF_INET6) { 805 sin6_new = (struct sockaddr_in6 *)new->buf; 806 sin6_svc = (struct sockaddr_in6 *)svc->buf; 807 808 if ((IN6_IS_ADDR_LINKLOCAL(&sin6_new->sin6_addr) && 809 IN6_IS_ADDR_LINKLOCAL(&sin6_svc->sin6_addr)) || 810 (IN6_IS_ADDR_SITELOCAL(&sin6_new->sin6_addr) && 811 IN6_IS_ADDR_SITELOCAL(&sin6_svc->sin6_addr))) { 812 sin6_new->sin6_scope_id = sin6_svc->sin6_scope_id; 813 } 814 } 815 #endif 816 return 1; 817 } 818 819 int 820 __rpc_sockisbound(int fd) 821 { 822 struct sockaddr_storage ss; 823 socklen_t slen; 824 825 slen = sizeof (struct sockaddr_storage); 826 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) 827 return 0; 828 829 switch (ss.ss_family) { 830 case AF_INET: 831 return (((struct sockaddr_in *) 832 (void *)&ss)->sin_port != 0); 833 #ifdef INET6 834 case AF_INET6: 835 return (((struct sockaddr_in6 *) 836 (void *)&ss)->sin6_port != 0); 837 #endif 838 case AF_LOCAL: 839 /* XXX check this */ 840 return (((struct sockaddr_un *) 841 (void *)&ss)->sun_path[0] != '\0'); 842 default: 843 break; 844 } 845 846 return 0; 847 } 848