1 /* $NetBSD: rpc_generic.c,v 1.4 2000/09/28 09:07:04 kleink Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2009, Sun Microsystems, 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 Sun Microsystems, 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 /*
37 * rpc_generic.c, Miscl routines for RPC.
38 *
39 */
40
41 #include "namespace.h"
42 #include "reentrant.h"
43 #include <sys/param.h>
44 #include <sys/socket.h>
45 #include <sys/time.h>
46 #include <sys/un.h>
47 #include <sys/resource.h>
48 #include <netinet/in.h>
49 #include <arpa/inet.h>
50 #include <rpc/rpc.h>
51 #include <ctype.h>
52 #include <stddef.h>
53 #include <stdio.h>
54 #include <netdb.h>
55 #include <netconfig.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <syslog.h>
59 #include <rpc/nettype.h>
60 #include "un-namespace.h"
61 #include "rpc_com.h"
62 #include "mt_misc.h"
63
64 struct handle {
65 NCONF_HANDLE *nhandle;
66 int nflag; /* Whether NETPATH or NETCONFIG */
67 int nettype;
68 };
69
70 static const struct _rpcnettype {
71 const char *name;
72 const int type;
73 } _rpctypelist[] = {
74 { "netpath", _RPC_NETPATH },
75 { "visible", _RPC_VISIBLE },
76 { "circuit_v", _RPC_CIRCUIT_V },
77 { "datagram_v", _RPC_DATAGRAM_V },
78 { "circuit_n", _RPC_CIRCUIT_N },
79 { "datagram_n", _RPC_DATAGRAM_N },
80 { "tcp", _RPC_TCP },
81 { "udp", _RPC_UDP },
82 { 0, _RPC_NONE }
83 };
84
85 struct netid_af {
86 const char *netid;
87 int af;
88 int protocol;
89 };
90
91 static const struct netid_af na_cvt[] = {
92 { "udp", AF_INET, IPPROTO_UDP },
93 { "tcp", AF_INET, IPPROTO_TCP },
94 #ifdef INET6
95 { "udp6", AF_INET6, IPPROTO_UDP },
96 { "tcp6", AF_INET6, IPPROTO_TCP },
97 #endif
98 { "local", AF_LOCAL, 0 }
99 };
100
101 #if 0
102 static char *strlocase(char *);
103 #endif
104 static int getnettype(const char *);
105
106
107 /*
108 * Find the appropriate buffer size
109 *
110 * size - Size requested
111 */
112 u_int
113 /*ARGSUSED*/
__rpc_get_t_size(int af,int proto,int size)114 __rpc_get_t_size(int af, int proto, int size)
115 {
116 int maxsize, defsize;
117
118 maxsize = 256 * 1024; /* XXX */
119 switch (proto) {
120 case IPPROTO_TCP:
121 defsize = 64 * 1024; /* XXX */
122 break;
123 case IPPROTO_UDP:
124 defsize = UDPMSGSIZE;
125 break;
126 default:
127 defsize = RPC_MAXDATASIZE;
128 break;
129 }
130 if (size == 0)
131 return defsize;
132
133 /* Check whether the value is within the upper max limit */
134 return (size > maxsize ? (u_int)maxsize : (u_int)size);
135 }
136
137 /*
138 * Find the appropriate address buffer size
139 */
140 u_int
__rpc_get_a_size(int af)141 __rpc_get_a_size(int af)
142 {
143 switch (af) {
144 case AF_INET:
145 return sizeof (struct sockaddr_in);
146 #ifdef INET6
147 case AF_INET6:
148 return sizeof (struct sockaddr_in6);
149 #endif
150 case AF_LOCAL:
151 return sizeof (struct sockaddr_un);
152 default:
153 break;
154 }
155 return ((u_int)RPC_MAXADDRSIZE);
156 }
157
158 #if 0
159 static char *
160 strlocase(char *p)
161 {
162 char *t = p;
163
164 for (; *p; p++)
165 if (isupper(*p))
166 *p = tolower(*p);
167 return (t);
168 }
169 #endif
170
171 /*
172 * Returns the type of the network as defined in <rpc/nettype.h>
173 * If nettype is NULL, it defaults to NETPATH.
174 */
175 static int
getnettype(const char * nettype)176 getnettype(const char *nettype)
177 {
178 int i;
179
180 if ((nettype == NULL) || (nettype[0] == 0)) {
181 return (_RPC_NETPATH); /* Default */
182 }
183
184 #if 0
185 nettype = strlocase(nettype);
186 #endif
187 for (i = 0; _rpctypelist[i].name; i++)
188 if (strcasecmp(nettype, _rpctypelist[i].name) == 0) {
189 return (_rpctypelist[i].type);
190 }
191 return (_rpctypelist[i].type);
192 }
193
194 static thread_key_t tcp_key, udp_key;
195 static once_t keys_once = ONCE_INITIALIZER;
196 static int tcp_key_error, udp_key_error;
197
198 static void
keys_init(void)199 keys_init(void)
200 {
201
202 tcp_key_error = thr_keycreate(&tcp_key, free);
203 udp_key_error = thr_keycreate(&udp_key, free);
204 }
205
206 /*
207 * For the given nettype (tcp or udp only), return the first structure found.
208 * This should be freed by calling freenetconfigent()
209 */
210 struct netconfig *
__rpc_getconfip(const char * nettype)211 __rpc_getconfip(const char *nettype)
212 {
213 char *netid;
214 char *netid_tcp = (char *) NULL;
215 char *netid_udp = (char *) NULL;
216 static char *netid_tcp_main;
217 static char *netid_udp_main;
218 struct netconfig *dummy;
219 int main_thread;
220
221 if ((main_thread = thr_main())) {
222 netid_udp = netid_udp_main;
223 netid_tcp = netid_tcp_main;
224 } else {
225 if (thr_once(&keys_once, keys_init) != 0 ||
226 tcp_key_error != 0 || udp_key_error != 0)
227 return (NULL);
228 netid_tcp = (char *)thr_getspecific(tcp_key);
229 netid_udp = (char *)thr_getspecific(udp_key);
230 }
231 if (!netid_udp && !netid_tcp) {
232 struct netconfig *nconf;
233 void *confighandle;
234
235 if (!(confighandle = setnetconfig())) {
236 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
237 return (NULL);
238 }
239 while ((nconf = getnetconfig(confighandle)) != NULL) {
240 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
241 if (strcmp(nconf->nc_proto, NC_TCP) == 0 &&
242 netid_tcp == NULL) {
243 netid_tcp = strdup(nconf->nc_netid);
244 if (main_thread)
245 netid_tcp_main = netid_tcp;
246 else
247 thr_setspecific(tcp_key,
248 (void *) netid_tcp);
249 } else
250 if (strcmp(nconf->nc_proto, NC_UDP) == 0 &&
251 netid_udp == NULL) {
252 netid_udp = strdup(nconf->nc_netid);
253 if (main_thread)
254 netid_udp_main = netid_udp;
255 else
256 thr_setspecific(udp_key,
257 (void *) netid_udp);
258 }
259 }
260 }
261 endnetconfig(confighandle);
262 }
263 if (strcmp(nettype, "udp") == 0)
264 netid = netid_udp;
265 else if (strcmp(nettype, "tcp") == 0)
266 netid = netid_tcp;
267 else {
268 return (NULL);
269 }
270 if ((netid == NULL) || (netid[0] == 0)) {
271 return (NULL);
272 }
273 dummy = getnetconfigent(netid);
274 return (dummy);
275 }
276
277 /*
278 * Returns the type of the nettype, which should then be used with
279 * __rpc_getconf().
280 */
281 void *
__rpc_setconf(const char * nettype)282 __rpc_setconf(const char *nettype)
283 {
284 struct handle *handle;
285
286 handle = (struct handle *) malloc(sizeof (struct handle));
287 if (handle == NULL) {
288 return (NULL);
289 }
290 switch (handle->nettype = getnettype(nettype)) {
291 case _RPC_NETPATH:
292 case _RPC_CIRCUIT_N:
293 case _RPC_DATAGRAM_N:
294 if (!(handle->nhandle = setnetpath()))
295 goto failed;
296 handle->nflag = TRUE;
297 break;
298 case _RPC_VISIBLE:
299 case _RPC_CIRCUIT_V:
300 case _RPC_DATAGRAM_V:
301 case _RPC_TCP:
302 case _RPC_UDP:
303 if (!(handle->nhandle = setnetconfig())) {
304 syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
305 goto failed;
306 }
307 handle->nflag = FALSE;
308 break;
309 default:
310 goto failed;
311 }
312
313 return (handle);
314
315 failed:
316 free(handle);
317 return (NULL);
318 }
319
320 /*
321 * Returns the next netconfig struct for the given "net" type.
322 * __rpc_setconf() should have been called previously.
323 */
324 struct netconfig *
__rpc_getconf(void * vhandle)325 __rpc_getconf(void *vhandle)
326 {
327 struct handle *handle;
328 struct netconfig *nconf;
329
330 handle = (struct handle *)vhandle;
331 if (handle == NULL) {
332 return (NULL);
333 }
334 for (;;) {
335 if (handle->nflag)
336 nconf = getnetpath(handle->nhandle);
337 else
338 nconf = getnetconfig(handle->nhandle);
339 if (nconf == NULL)
340 break;
341 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
342 (nconf->nc_semantics != NC_TPI_COTS) &&
343 (nconf->nc_semantics != NC_TPI_COTS_ORD))
344 continue;
345 switch (handle->nettype) {
346 case _RPC_VISIBLE:
347 if (!(nconf->nc_flag & NC_VISIBLE))
348 continue;
349 /* FALLTHROUGH */
350 case _RPC_NETPATH: /* Be happy */
351 break;
352 case _RPC_CIRCUIT_V:
353 if (!(nconf->nc_flag & NC_VISIBLE))
354 continue;
355 /* FALLTHROUGH */
356 case _RPC_CIRCUIT_N:
357 if ((nconf->nc_semantics != NC_TPI_COTS) &&
358 (nconf->nc_semantics != NC_TPI_COTS_ORD))
359 continue;
360 break;
361 case _RPC_DATAGRAM_V:
362 if (!(nconf->nc_flag & NC_VISIBLE))
363 continue;
364 /* FALLTHROUGH */
365 case _RPC_DATAGRAM_N:
366 if (nconf->nc_semantics != NC_TPI_CLTS)
367 continue;
368 break;
369 case _RPC_TCP:
370 if (((nconf->nc_semantics != NC_TPI_COTS) &&
371 (nconf->nc_semantics != NC_TPI_COTS_ORD)) ||
372 (strcmp(nconf->nc_protofmly, NC_INET)
373 #ifdef INET6
374 && strcmp(nconf->nc_protofmly, NC_INET6))
375 #else
376 )
377 #endif
378 ||
379 strcmp(nconf->nc_proto, NC_TCP))
380 continue;
381 break;
382 case _RPC_UDP:
383 if ((nconf->nc_semantics != NC_TPI_CLTS) ||
384 (strcmp(nconf->nc_protofmly, NC_INET)
385 #ifdef INET6
386 && strcmp(nconf->nc_protofmly, NC_INET6))
387 #else
388 )
389 #endif
390 ||
391 strcmp(nconf->nc_proto, NC_UDP))
392 continue;
393 break;
394 }
395 break;
396 }
397 return (nconf);
398 }
399
400 void
__rpc_endconf(void * vhandle)401 __rpc_endconf(void *vhandle)
402 {
403 struct handle *handle;
404
405 handle = (struct handle *) vhandle;
406 if (handle == NULL) {
407 return;
408 }
409 if (handle->nflag) {
410 endnetpath(handle->nhandle);
411 } else {
412 endnetconfig(handle->nhandle);
413 }
414 free(handle);
415 }
416
417 /*
418 * Used to ping the NULL procedure for clnt handle.
419 * Returns NULL if fails, else a non-NULL pointer.
420 */
421 void *
rpc_nullproc(CLIENT * clnt)422 rpc_nullproc(CLIENT *clnt)
423 {
424 struct timeval TIMEOUT = {25, 0};
425
426 if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL,
427 (xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
428 return (NULL);
429 }
430 return ((void *) clnt);
431 }
432
433 /*
434 * Try all possible transports until
435 * one succeeds in finding the netconf for the given fd.
436 */
437 struct netconfig *
__rpcgettp(int fd)438 __rpcgettp(int fd)
439 {
440 const char *netid;
441 struct __rpc_sockinfo si;
442
443 if (!__rpc_fd2sockinfo(fd, &si))
444 return NULL;
445
446 if (!__rpc_sockinfo2netid(&si, &netid))
447 return NULL;
448
449 /*LINTED const castaway*/
450 return getnetconfigent((char *)netid);
451 }
452
453 int
__rpc_fd2sockinfo(int fd,struct __rpc_sockinfo * sip)454 __rpc_fd2sockinfo(int fd, struct __rpc_sockinfo *sip)
455 {
456 socklen_t len;
457 int type, proto;
458 struct sockaddr_storage ss;
459
460 len = sizeof ss;
461 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &len) < 0)
462 return 0;
463 sip->si_alen = len;
464
465 len = sizeof type;
466 if (_getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &len) < 0)
467 return 0;
468
469 /* XXX */
470 if (ss.ss_family != AF_LOCAL) {
471 if (type == SOCK_STREAM)
472 proto = IPPROTO_TCP;
473 else if (type == SOCK_DGRAM)
474 proto = IPPROTO_UDP;
475 else
476 return 0;
477 } else
478 proto = 0;
479
480 sip->si_af = ss.ss_family;
481 sip->si_proto = proto;
482 sip->si_socktype = type;
483
484 return 1;
485 }
486
487 /*
488 * Linear search, but the number of entries is small.
489 */
490 int
__rpc_nconf2sockinfo(const struct netconfig * nconf,struct __rpc_sockinfo * sip)491 __rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip)
492 {
493 int i;
494
495 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++)
496 if (strcmp(na_cvt[i].netid, nconf->nc_netid) == 0 || (
497 strcmp(nconf->nc_netid, "unix") == 0 &&
498 strcmp(na_cvt[i].netid, "local") == 0)) {
499 sip->si_af = na_cvt[i].af;
500 sip->si_proto = na_cvt[i].protocol;
501 sip->si_socktype =
502 __rpc_seman2socktype((int)nconf->nc_semantics);
503 if (sip->si_socktype == -1)
504 return 0;
505 sip->si_alen = __rpc_get_a_size(sip->si_af);
506 return 1;
507 }
508
509 return 0;
510 }
511
512 int
__rpc_nconf2fd(const struct netconfig * nconf)513 __rpc_nconf2fd(const struct netconfig *nconf)
514 {
515 struct __rpc_sockinfo si;
516
517 if (!__rpc_nconf2sockinfo(nconf, &si))
518 return 0;
519
520 return _socket(si.si_af, si.si_socktype, si.si_proto);
521 }
522
523 int
__rpc_sockinfo2netid(struct __rpc_sockinfo * sip,const char ** netid)524 __rpc_sockinfo2netid(struct __rpc_sockinfo *sip, const char **netid)
525 {
526 int i;
527 struct netconfig *nconf;
528
529 nconf = getnetconfigent("local");
530
531 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++) {
532 if (na_cvt[i].af == sip->si_af &&
533 na_cvt[i].protocol == sip->si_proto) {
534 if (strcmp(na_cvt[i].netid, "local") == 0 && nconf == NULL) {
535 if (netid)
536 *netid = "unix";
537 } else {
538 if (netid)
539 *netid = na_cvt[i].netid;
540 }
541 if (nconf != NULL)
542 freenetconfigent(nconf);
543 return 1;
544 }
545 }
546 if (nconf != NULL)
547 freenetconfigent(nconf);
548
549 return 0;
550 }
551
552 char *
taddr2uaddr(const struct netconfig * nconf,const struct netbuf * nbuf)553 taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf)
554 {
555 struct __rpc_sockinfo si;
556
557 if (!__rpc_nconf2sockinfo(nconf, &si))
558 return NULL;
559 return __rpc_taddr2uaddr_af(si.si_af, nbuf);
560 }
561
562 struct netbuf *
uaddr2taddr(const struct netconfig * nconf,const char * uaddr)563 uaddr2taddr(const struct netconfig *nconf, const char *uaddr)
564 {
565 struct __rpc_sockinfo si;
566
567 if (!__rpc_nconf2sockinfo(nconf, &si))
568 return NULL;
569 return __rpc_uaddr2taddr_af(si.si_af, uaddr);
570 }
571
572 char *
__rpc_taddr2uaddr_af(int af,const struct netbuf * nbuf)573 __rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
574 {
575 char *ret;
576 struct sockaddr_in *sin;
577 struct sockaddr_un *sun;
578 char namebuf[INET_ADDRSTRLEN];
579 #ifdef INET6
580 struct sockaddr_in6 *sin6;
581 char namebuf6[INET6_ADDRSTRLEN];
582 #endif
583 u_int16_t port;
584
585 switch (af) {
586 case AF_INET:
587 if (nbuf->len < sizeof(*sin))
588 return NULL;
589 sin = nbuf->buf;
590 if (inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf)
591 == NULL)
592 return NULL;
593 port = ntohs(sin->sin_port);
594 if (asprintf(&ret, "%s.%u.%u", namebuf, ((u_int32_t)port) >> 8,
595 port & 0xff) < 0)
596 return NULL;
597 break;
598 #ifdef INET6
599 case AF_INET6:
600 if (nbuf->len < sizeof(*sin6))
601 return NULL;
602 sin6 = nbuf->buf;
603 if (inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6)
604 == NULL)
605 return NULL;
606 port = ntohs(sin6->sin6_port);
607 if (asprintf(&ret, "%s.%u.%u", namebuf6, ((u_int32_t)port) >> 8,
608 port & 0xff) < 0)
609 return NULL;
610 break;
611 #endif
612 case AF_LOCAL:
613 sun = nbuf->buf;
614 if (asprintf(&ret, "%.*s", (int)(sun->sun_len -
615 offsetof(struct sockaddr_un, sun_path)),
616 sun->sun_path) < 0)
617 return (NULL);
618 break;
619 default:
620 return NULL;
621 }
622
623 return ret;
624 }
625
626 struct netbuf *
__rpc_uaddr2taddr_af(int af,const char * uaddr)627 __rpc_uaddr2taddr_af(int af, const char *uaddr)
628 {
629 struct netbuf *ret = NULL;
630 char *addrstr, *p;
631 unsigned port, portlo, porthi;
632 struct sockaddr_in *sin;
633 #ifdef INET6
634 struct sockaddr_in6 *sin6;
635 #endif
636 struct sockaddr_un *sun;
637
638 port = 0;
639 sin = NULL;
640
641 if (uaddr == NULL)
642 return NULL;
643
644 addrstr = strdup(uaddr);
645 if (addrstr == NULL)
646 return NULL;
647
648 /*
649 * AF_LOCAL addresses are expected to be absolute
650 * pathnames, anything else will be AF_INET or AF_INET6.
651 */
652 if (*addrstr != '/') {
653 p = strrchr(addrstr, '.');
654 if (p == NULL)
655 goto out;
656 portlo = (unsigned)atoi(p + 1);
657 *p = '\0';
658
659 p = strrchr(addrstr, '.');
660 if (p == NULL)
661 goto out;
662 porthi = (unsigned)atoi(p + 1);
663 *p = '\0';
664 port = (porthi << 8) | portlo;
665 }
666
667 ret = (struct netbuf *)malloc(sizeof *ret);
668 if (ret == NULL)
669 goto out;
670
671 switch (af) {
672 case AF_INET:
673 sin = (struct sockaddr_in *)malloc(sizeof *sin);
674 if (sin == NULL)
675 goto out;
676 memset(sin, 0, sizeof *sin);
677 sin->sin_family = AF_INET;
678 sin->sin_port = htons(port);
679 if (inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) {
680 free(sin);
681 free(ret);
682 ret = NULL;
683 goto out;
684 }
685 sin->sin_len = ret->maxlen = ret->len = sizeof *sin;
686 ret->buf = sin;
687 break;
688 #ifdef INET6
689 case AF_INET6:
690 sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6);
691 if (sin6 == NULL)
692 goto out;
693 memset(sin6, 0, sizeof *sin6);
694 sin6->sin6_family = AF_INET6;
695 sin6->sin6_port = htons(port);
696 if (inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) {
697 free(sin6);
698 free(ret);
699 ret = NULL;
700 goto out;
701 }
702 sin6->sin6_len = ret->maxlen = ret->len = sizeof *sin6;
703 ret->buf = sin6;
704 break;
705 #endif
706 case AF_LOCAL:
707 sun = (struct sockaddr_un *)malloc(sizeof *sun);
708 if (sun == NULL)
709 goto out;
710 memset(sun, 0, sizeof *sun);
711 sun->sun_family = AF_LOCAL;
712 strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1);
713 ret->len = ret->maxlen = sun->sun_len = SUN_LEN(sun);
714 ret->buf = sun;
715 break;
716 default:
717 break;
718 }
719 out:
720 free(addrstr);
721 return ret;
722 }
723
724 int
__rpc_seman2socktype(int semantics)725 __rpc_seman2socktype(int semantics)
726 {
727 switch (semantics) {
728 case NC_TPI_CLTS:
729 return SOCK_DGRAM;
730 case NC_TPI_COTS_ORD:
731 return SOCK_STREAM;
732 case NC_TPI_RAW:
733 return SOCK_RAW;
734 default:
735 break;
736 }
737
738 return -1;
739 }
740
741 int
__rpc_socktype2seman(int socktype)742 __rpc_socktype2seman(int socktype)
743 {
744 switch (socktype) {
745 case SOCK_DGRAM:
746 return NC_TPI_CLTS;
747 case SOCK_STREAM:
748 return NC_TPI_COTS_ORD;
749 case SOCK_RAW:
750 return NC_TPI_RAW;
751 default:
752 break;
753 }
754
755 return -1;
756 }
757
758 /*
759 * XXXX - IPv6 scope IDs can't be handled in universal addresses.
760 * Here, we compare the original server address to that of the RPC
761 * service we just received back from a call to rpcbind on the remote
762 * machine. If they are both "link local" or "site local", copy
763 * the scope id of the server address over to the service address.
764 */
765 int
__rpc_fixup_addr(struct netbuf * new,const struct netbuf * svc)766 __rpc_fixup_addr(struct netbuf *new, const struct netbuf *svc)
767 {
768 #ifdef INET6
769 struct sockaddr *sa_new, *sa_svc;
770 struct sockaddr_in6 *sin6_new, *sin6_svc;
771
772 sa_svc = (struct sockaddr *)svc->buf;
773 sa_new = (struct sockaddr *)new->buf;
774
775 if (sa_new->sa_family == sa_svc->sa_family &&
776 sa_new->sa_family == AF_INET6) {
777 sin6_new = (struct sockaddr_in6 *)new->buf;
778 sin6_svc = (struct sockaddr_in6 *)svc->buf;
779
780 if ((IN6_IS_ADDR_LINKLOCAL(&sin6_new->sin6_addr) &&
781 IN6_IS_ADDR_LINKLOCAL(&sin6_svc->sin6_addr)) ||
782 (IN6_IS_ADDR_SITELOCAL(&sin6_new->sin6_addr) &&
783 IN6_IS_ADDR_SITELOCAL(&sin6_svc->sin6_addr))) {
784 sin6_new->sin6_scope_id = sin6_svc->sin6_scope_id;
785 }
786 }
787 #endif
788 return 1;
789 }
790
791 int
__rpc_sockisbound(int fd)792 __rpc_sockisbound(int fd)
793 {
794 struct sockaddr_storage ss;
795 socklen_t slen;
796
797 slen = sizeof (struct sockaddr_storage);
798 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0)
799 return 0;
800
801 switch (ss.ss_family) {
802 case AF_INET:
803 return (((struct sockaddr_in *)
804 (void *)&ss)->sin_port != 0);
805 #ifdef INET6
806 case AF_INET6:
807 return (((struct sockaddr_in6 *)
808 (void *)&ss)->sin6_port != 0);
809 #endif
810 case AF_LOCAL:
811 /* XXX check this */
812 return (((struct sockaddr_un *)
813 (void *)&ss)->sun_path[0] != '\0');
814 default:
815 break;
816 }
817
818 return 0;
819 }
820