59#include <rpc/rpc.h>
60#include <rpc/nettype.h>
61
62#include <rpc/rpc_com.h>
63
64#if __FreeBSD_version < 700000
65#define strrchr rindex
66#endif
67
68struct handle {
69 NCONF_HANDLE *nhandle;
70 int nflag; /* Whether NETPATH or NETCONFIG */
71 int nettype;
72};
73
74static 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
89struct netid_af {
90 const char *netid;
91 int af;
92 int protocol;
93};
94
95static 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
105struct rpc_createerr rpc_createerr;
106
107/*
108 * Find the appropriate buffer size
109 */
110u_int
111/*ARGSUSED*/
112__rpc_get_t_size(int af, int proto, int size)
113{
114 int maxsize, defsize;
115
116 maxsize = 256 * 1024; /* XXX */
117 switch (proto) {
118 case IPPROTO_TCP:
119 defsize = 64 * 1024; /* XXX */
120 break;
121 case IPPROTO_UDP:
122 defsize = UDPMSGSIZE;
123 break;
124 default:
125 defsize = RPC_MAXDATASIZE;
126 break;
127 }
128 if (size == 0)
129 return defsize;
130
131 /* Check whether the value is within the upper max limit */
132 return (size > maxsize ? (u_int)maxsize : (u_int)size);
133}
134
135/*
136 * Find the appropriate address buffer size
137 */
138u_int
139__rpc_get_a_size(af)
140 int af;
141{
142 switch (af) {
143 case AF_INET:
144 return sizeof (struct sockaddr_in);
145#ifdef INET6
146 case AF_INET6:
147 return sizeof (struct sockaddr_in6);
148#endif
149 case AF_LOCAL:
150 return sizeof (struct sockaddr_un);
151 default:
152 break;
153 }
154 return ((u_int)RPC_MAXADDRSIZE);
155}
156
157#if 0
158
159/*
160 * Used to ping the NULL procedure for clnt handle.
161 * Returns NULL if fails, else a non-NULL pointer.
162 */
163void *
164rpc_nullproc(clnt)
165 CLIENT *clnt;
166{
167 struct timeval TIMEOUT = {25, 0};
168
169 if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL,
170 (xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
171 return (NULL);
172 }
173 return ((void *) clnt);
174}
175
176#endif
177
178int
179__rpc_socket2sockinfo(struct socket *so, struct __rpc_sockinfo *sip)
180{
181 int type, proto;
182 struct sockaddr *sa;
183 sa_family_t family;
184 struct sockopt opt;
185 int error;
186
187 error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
188 if (error)
189 return 0;
190
191 sip->si_alen = sa->sa_len;
192 family = sa->sa_family;
193 free(sa, M_SONAME);
194
195 opt.sopt_dir = SOPT_GET;
196 opt.sopt_level = SOL_SOCKET;
197 opt.sopt_name = SO_TYPE;
198 opt.sopt_val = &type;
199 opt.sopt_valsize = sizeof type;
200 opt.sopt_td = NULL;
201 error = sogetopt(so, &opt);
202 if (error)
203 return 0;
204
205 /* XXX */
206 if (family != AF_LOCAL) {
207 if (type == SOCK_STREAM)
208 proto = IPPROTO_TCP;
209 else if (type == SOCK_DGRAM)
210 proto = IPPROTO_UDP;
211 else
212 return 0;
213 } else
214 proto = 0;
215
216 sip->si_af = family;
217 sip->si_proto = proto;
218 sip->si_socktype = type;
219
220 return 1;
221}
222
223/*
224 * Linear search, but the number of entries is small.
225 */
226int
227__rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip)
228{
229 int i;
230
231 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++)
232 if (strcmp(na_cvt[i].netid, nconf->nc_netid) == 0 || (
233 strcmp(nconf->nc_netid, "unix") == 0 &&
234 strcmp(na_cvt[i].netid, "local") == 0)) {
235 sip->si_af = na_cvt[i].af;
236 sip->si_proto = na_cvt[i].protocol;
237 sip->si_socktype =
238 __rpc_seman2socktype((int)nconf->nc_semantics);
239 if (sip->si_socktype == -1)
240 return 0;
241 sip->si_alen = __rpc_get_a_size(sip->si_af);
242 return 1;
243 }
244
245 return 0;
246}
247
248struct socket *
249__rpc_nconf2socket(const struct netconfig *nconf)
250{
251 struct __rpc_sockinfo si;
252 struct socket *so;
253 int error;
254
255 if (!__rpc_nconf2sockinfo(nconf, &si))
256 return 0;
257
258 so = NULL;
259 error = socreate(si.si_af, &so, si.si_socktype, si.si_proto,
260 curthread->td_ucred, curthread);
261
262 if (error)
263 return NULL;
264 else
265 return so;
266}
267
268char *
269taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf)
270{
271 struct __rpc_sockinfo si;
272
273 if (!__rpc_nconf2sockinfo(nconf, &si))
274 return NULL;
275 return __rpc_taddr2uaddr_af(si.si_af, nbuf);
276}
277
278struct netbuf *
279uaddr2taddr(const struct netconfig *nconf, const char *uaddr)
280{
281 struct __rpc_sockinfo si;
282
283 if (!__rpc_nconf2sockinfo(nconf, &si))
284 return NULL;
285 return __rpc_uaddr2taddr_af(si.si_af, uaddr);
286}
287
288char *
289__rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
290{
291 char *ret;
292 struct sbuf sb;
293 struct sockaddr_in *sin;
294 struct sockaddr_un *sun;
295 char namebuf[INET_ADDRSTRLEN];
296#ifdef INET6
297 struct sockaddr_in6 *sin6;
298 char namebuf6[INET6_ADDRSTRLEN];
299#endif
300 u_int16_t port;
301
302 sbuf_new(&sb, NULL, 0, SBUF_AUTOEXTEND);
303
304 switch (af) {
305 case AF_INET:
306 sin = nbuf->buf;
307 if (__rpc_inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf)
308 == NULL)
309 return NULL;
310 port = ntohs(sin->sin_port);
311 if (sbuf_printf(&sb, "%s.%u.%u", namebuf,
312 ((uint32_t)port) >> 8,
313 port & 0xff) < 0)
314 return NULL;
315 break;
316#ifdef INET6
317 case AF_INET6:
318 sin6 = nbuf->buf;
319 if (__rpc_inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6)
320 == NULL)
321 return NULL;
322 port = ntohs(sin6->sin6_port);
323 if (sbuf_printf(&sb, "%s.%u.%u", namebuf6,
324 ((uint32_t)port) >> 8,
325 port & 0xff) < 0)
326 return NULL;
327 break;
328#endif
329 case AF_LOCAL:
330 sun = nbuf->buf;
331 if (sbuf_printf(&sb, "%.*s", (int)(sun->sun_len -
332 offsetof(struct sockaddr_un, sun_path)),
333 sun->sun_path) < 0)
334 return (NULL);
335 break;
336 default:
337 return NULL;
338 }
339
340 sbuf_finish(&sb);
341 ret = strdup(sbuf_data(&sb), M_RPC);
342 sbuf_delete(&sb);
343
344 return ret;
345}
346
347struct netbuf *
348__rpc_uaddr2taddr_af(int af, const char *uaddr)
349{
350 struct netbuf *ret = NULL;
351 char *addrstr, *p;
352 unsigned port, portlo, porthi;
353 struct sockaddr_in *sin;
354#ifdef INET6
355 struct sockaddr_in6 *sin6;
356#endif
357 struct sockaddr_un *sun;
358
359 port = 0;
360 sin = NULL;
361 addrstr = strdup(uaddr, M_RPC);
362 if (addrstr == NULL)
363 return NULL;
364
365 /*
366 * AF_LOCAL addresses are expected to be absolute
367 * pathnames, anything else will be AF_INET or AF_INET6.
368 */
369 if (*addrstr != '/') {
370 p = strrchr(addrstr, '.');
371 if (p == NULL)
372 goto out;
373 portlo = (unsigned)strtol(p + 1, NULL, 10);
374 *p = '\0';
375
376 p = strrchr(addrstr, '.');
377 if (p == NULL)
378 goto out;
379 porthi = (unsigned)strtol(p + 1, NULL, 10);
380 *p = '\0';
381 port = (porthi << 8) | portlo;
382 }
383
384 ret = (struct netbuf *)malloc(sizeof *ret, M_RPC, M_WAITOK);
385 if (ret == NULL)
386 goto out;
387
388 switch (af) {
389 case AF_INET:
390 sin = (struct sockaddr_in *)malloc(sizeof *sin, M_RPC,
391 M_WAITOK);
392 if (sin == NULL)
393 goto out;
394 memset(sin, 0, sizeof *sin);
395 sin->sin_family = AF_INET;
396 sin->sin_port = htons(port);
397 if (__rpc_inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) {
398 free(sin, M_RPC);
399 free(ret, M_RPC);
400 ret = NULL;
401 goto out;
402 }
403 sin->sin_len = ret->maxlen = ret->len = sizeof *sin;
404 ret->buf = sin;
405 break;
406#ifdef INET6
407 case AF_INET6:
408 sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6, M_RPC,
409 M_WAITOK);
410 if (sin6 == NULL)
411 goto out;
412 memset(sin6, 0, sizeof *sin6);
413 sin6->sin6_family = AF_INET6;
414 sin6->sin6_port = htons(port);
415 if (__rpc_inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) {
416 free(sin6, M_RPC);
417 free(ret, M_RPC);
418 ret = NULL;
419 goto out;
420 }
421 sin6->sin6_len = ret->maxlen = ret->len = sizeof *sin6;
422 ret->buf = sin6;
423 break;
424#endif
425 case AF_LOCAL:
426 sun = (struct sockaddr_un *)malloc(sizeof *sun, M_RPC,
427 M_WAITOK);
428 if (sun == NULL)
429 goto out;
430 memset(sun, 0, sizeof *sun);
431 sun->sun_family = AF_LOCAL;
432 strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1);
433 ret->len = ret->maxlen = sun->sun_len = SUN_LEN(sun);
434 ret->buf = sun;
435 break;
436 default:
437 break;
438 }
439out:
440 free(addrstr, M_RPC);
441 return ret;
442}
443
444int
445__rpc_seman2socktype(int semantics)
446{
447 switch (semantics) {
448 case NC_TPI_CLTS:
449 return SOCK_DGRAM;
450 case NC_TPI_COTS_ORD:
451 return SOCK_STREAM;
452 case NC_TPI_RAW:
453 return SOCK_RAW;
454 default:
455 break;
456 }
457
458 return -1;
459}
460
461int
462__rpc_socktype2seman(int socktype)
463{
464 switch (socktype) {
465 case SOCK_DGRAM:
466 return NC_TPI_CLTS;
467 case SOCK_STREAM:
468 return NC_TPI_COTS_ORD;
469 case SOCK_RAW:
470 return NC_TPI_RAW;
471 default:
472 break;
473 }
474
475 return -1;
476}
477
478/*
479 * Returns the type of the network as defined in <rpc/nettype.h>
480 * If nettype is NULL, it defaults to NETPATH.
481 */
482static int
483getnettype(const char *nettype)
484{
485 int i;
486
487 if ((nettype == NULL) || (nettype[0] == 0)) {
488 return (_RPC_NETPATH); /* Default */
489 }
490
491#if 0
492 nettype = strlocase(nettype);
493#endif
494 for (i = 0; _rpctypelist[i].name; i++)
495 if (strcasecmp(nettype, _rpctypelist[i].name) == 0) {
496 return (_rpctypelist[i].type);
497 }
498 return (_rpctypelist[i].type);
499}
500
501/*
502 * For the given nettype (tcp or udp only), return the first structure found.
503 * This should be freed by calling freenetconfigent()
504 */
505struct netconfig *
506__rpc_getconfip(const char *nettype)
507{
508 char *netid;
509 static char *netid_tcp = (char *) NULL;
510 static char *netid_udp = (char *) NULL;
511 struct netconfig *dummy;
512
513 if (!netid_udp && !netid_tcp) {
514 struct netconfig *nconf;
515 void *confighandle;
516
517 if (!(confighandle = setnetconfig())) {
518 log(LOG_ERR, "rpc: failed to open " NETCONFIG);
519 return (NULL);
520 }
521 while ((nconf = getnetconfig(confighandle)) != NULL) {
522 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
523 if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
524 netid_tcp = strdup(nconf->nc_netid,
525 M_RPC);
526 } else
527 if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
528 netid_udp = strdup(nconf->nc_netid,
529 M_RPC);
530 }
531 }
532 }
533 endnetconfig(confighandle);
534 }
535 if (strcmp(nettype, "udp") == 0)
536 netid = netid_udp;
537 else if (strcmp(nettype, "tcp") == 0)
538 netid = netid_tcp;
539 else {
540 return (NULL);
541 }
542 if ((netid == NULL) || (netid[0] == 0)) {
543 return (NULL);
544 }
545 dummy = getnetconfigent(netid);
546 return (dummy);
547}
548
549/*
550 * Returns the type of the nettype, which should then be used with
551 * __rpc_getconf().
552 *
553 * For simplicity in the kernel, we don't support the NETPATH
554 * environment variable. We behave as userland would then NETPATH is
555 * unset, i.e. iterate over all visible entries in netconfig.
556 */
557void *
558__rpc_setconf(nettype)
559 const char *nettype;
560{
561 struct handle *handle;
562
563 handle = (struct handle *) malloc(sizeof (struct handle),
564 M_RPC, M_WAITOK);
565 switch (handle->nettype = getnettype(nettype)) {
566 case _RPC_NETPATH:
567 case _RPC_CIRCUIT_N:
568 case _RPC_DATAGRAM_N:
569 if (!(handle->nhandle = setnetconfig()))
570 goto failed;
571 handle->nflag = TRUE;
572 break;
573 case _RPC_VISIBLE:
574 case _RPC_CIRCUIT_V:
575 case _RPC_DATAGRAM_V:
576 case _RPC_TCP:
577 case _RPC_UDP:
578 if (!(handle->nhandle = setnetconfig())) {
579 log(LOG_ERR, "rpc: failed to open " NETCONFIG);
580 goto failed;
581 }
582 handle->nflag = FALSE;
583 break;
584 default:
585 goto failed;
586 }
587
588 return (handle);
589
590failed:
591 free(handle, M_RPC);
592 return (NULL);
593}
594
595/*
596 * Returns the next netconfig struct for the given "net" type.
597 * __rpc_setconf() should have been called previously.
598 */
599struct netconfig *
600__rpc_getconf(void *vhandle)
601{
602 struct handle *handle;
603 struct netconfig *nconf;
604
605 handle = (struct handle *)vhandle;
606 if (handle == NULL) {
607 return (NULL);
608 }
609 for (;;) {
610 if (handle->nflag) {
611 nconf = getnetconfig(handle->nhandle);
612 if (nconf && !(nconf->nc_flag & NC_VISIBLE))
613 continue;
614 } else {
615 nconf = getnetconfig(handle->nhandle);
616 }
617 if (nconf == NULL)
618 break;
619 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
620 (nconf->nc_semantics != NC_TPI_COTS) &&
621 (nconf->nc_semantics != NC_TPI_COTS_ORD))
622 continue;
623 switch (handle->nettype) {
624 case _RPC_VISIBLE:
625 if (!(nconf->nc_flag & NC_VISIBLE))
626 continue;
627 /* FALLTHROUGH */
628 case _RPC_NETPATH: /* Be happy */
629 break;
630 case _RPC_CIRCUIT_V:
631 if (!(nconf->nc_flag & NC_VISIBLE))
632 continue;
633 /* FALLTHROUGH */
634 case _RPC_CIRCUIT_N:
635 if ((nconf->nc_semantics != NC_TPI_COTS) &&
636 (nconf->nc_semantics != NC_TPI_COTS_ORD))
637 continue;
638 break;
639 case _RPC_DATAGRAM_V:
640 if (!(nconf->nc_flag & NC_VISIBLE))
641 continue;
642 /* FALLTHROUGH */
643 case _RPC_DATAGRAM_N:
644 if (nconf->nc_semantics != NC_TPI_CLTS)
645 continue;
646 break;
647 case _RPC_TCP:
648 if (((nconf->nc_semantics != NC_TPI_COTS) &&
649 (nconf->nc_semantics != NC_TPI_COTS_ORD)) ||
650 (strcmp(nconf->nc_protofmly, NC_INET)
651#ifdef INET6
652 && strcmp(nconf->nc_protofmly, NC_INET6))
653#else
654 )
655#endif
656 ||
657 strcmp(nconf->nc_proto, NC_TCP))
658 continue;
659 break;
660 case _RPC_UDP:
661 if ((nconf->nc_semantics != NC_TPI_CLTS) ||
662 (strcmp(nconf->nc_protofmly, NC_INET)
663#ifdef INET6
664 && strcmp(nconf->nc_protofmly, NC_INET6))
665#else
666 )
667#endif
668 ||
669 strcmp(nconf->nc_proto, NC_UDP))
670 continue;
671 break;
672 }
673 break;
674 }
675 return (nconf);
676}
677
678void
679__rpc_endconf(vhandle)
680 void * vhandle;
681{
682 struct handle *handle;
683
684 handle = (struct handle *) vhandle;
685 if (handle == NULL) {
686 return;
687 }
688 endnetconfig(handle->nhandle);
689 free(handle, M_RPC);
690}
691
692int
693__rpc_sockisbound(struct socket *so)
694{
695 struct sockaddr *sa;
696 int error, bound;
697
698 error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
699 if (error)
700 return (0);
701
702 switch (sa->sa_family) {
703 case AF_INET:
704 bound = (((struct sockaddr_in *) sa)->sin_port != 0);
705 break;
706#ifdef INET6
707 case AF_INET6:
708 bound = (((struct sockaddr_in6 *) sa)->sin6_port != 0);
709 break;
710#endif
711 case AF_LOCAL:
712 /* XXX check this */
713 bound = (((struct sockaddr_un *) sa)->sun_path[0] != '\0');
714 break;
715 default:
716 bound = FALSE;
717 break;
718 }
719
720 free(sa, M_SONAME);
721
722 return bound;
723}
724
725/*
726 * Implement XDR-style API for RPC call.
727 */
728enum clnt_stat
729clnt_call_private(
730 CLIENT *cl, /* client handle */
731 struct rpc_callextra *ext, /* call metadata */
732 rpcproc_t proc, /* procedure number */
733 xdrproc_t xargs, /* xdr routine for args */
734 void *argsp, /* pointer to args */
735 xdrproc_t xresults, /* xdr routine for results */
736 void *resultsp, /* pointer to results */
737 struct timeval utimeout) /* seconds to wait before giving up */
738{
739 XDR xdrs;
740 struct mbuf *mreq;
741 struct mbuf *mrep;
742 enum clnt_stat stat;
743
744 MGET(mreq, M_WAIT, MT_DATA);
745 MCLGET(mreq, M_WAIT);
746 mreq->m_len = 0;
747
748 xdrmbuf_create(&xdrs, mreq, XDR_ENCODE);
749 if (!xargs(&xdrs, argsp)) {
750 m_freem(mreq);
751 return (RPC_CANTENCODEARGS);
752 }
753 XDR_DESTROY(&xdrs);
754
755 stat = CLNT_CALL_MBUF(cl, ext, proc, mreq, &mrep, utimeout);
756 m_freem(mreq);
757
758 if (stat == RPC_SUCCESS) {
759 xdrmbuf_create(&xdrs, mrep, XDR_DECODE);
760 if (!xresults(&xdrs, resultsp)) {
761 XDR_DESTROY(&xdrs);
762 return (RPC_CANTDECODERES);
763 }
764 XDR_DESTROY(&xdrs);
765 }
766
767 return (stat);
768}
769
770/*
771 * Bind a socket to a privileged IP port
772 */
773int
774bindresvport(struct socket *so, struct sockaddr *sa)
775{
776 int old, error, af;
777 bool_t freesa = FALSE;
778 struct sockaddr_in *sin;
779#ifdef INET6
780 struct sockaddr_in6 *sin6;
781#endif
782 struct sockopt opt;
783 int proto, portrange, portlow;
784 u_int16_t *portp;
785 socklen_t salen;
786
787 if (sa == NULL) {
788 error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
789 if (error)
790 return (error);
791 freesa = TRUE;
792 af = sa->sa_family;
793 salen = sa->sa_len;
794 memset(sa, 0, sa->sa_len);
795 } else {
796 af = sa->sa_family;
797 salen = sa->sa_len;
798 }
799
800 switch (af) {
801 case AF_INET:
802 proto = IPPROTO_IP;
803 portrange = IP_PORTRANGE;
804 portlow = IP_PORTRANGE_LOW;
805 sin = (struct sockaddr_in *)sa;
806 portp = &sin->sin_port;
807 break;
808#ifdef INET6
809 case AF_INET6:
810 proto = IPPROTO_IPV6;
811 portrange = IPV6_PORTRANGE;
812 portlow = IPV6_PORTRANGE_LOW;
813 sin6 = (struct sockaddr_in6 *)sa;
814 portp = &sin6->sin6_port;
815 break;
816#endif
817 default:
818 return (EPFNOSUPPORT);
819 }
820
821 sa->sa_family = af;
822 sa->sa_len = salen;
823
824 if (*portp == 0) {
| 61#include <rpc/rpc.h>
62#include <rpc/nettype.h>
63
64#include <rpc/rpc_com.h>
65
66#if __FreeBSD_version < 700000
67#define strrchr rindex
68#endif
69
70struct handle {
71 NCONF_HANDLE *nhandle;
72 int nflag; /* Whether NETPATH or NETCONFIG */
73 int nettype;
74};
75
76static const struct _rpcnettype {
77 const char *name;
78 const int type;
79} _rpctypelist[] = {
80 { "netpath", _RPC_NETPATH },
81 { "visible", _RPC_VISIBLE },
82 { "circuit_v", _RPC_CIRCUIT_V },
83 { "datagram_v", _RPC_DATAGRAM_V },
84 { "circuit_n", _RPC_CIRCUIT_N },
85 { "datagram_n", _RPC_DATAGRAM_N },
86 { "tcp", _RPC_TCP },
87 { "udp", _RPC_UDP },
88 { 0, _RPC_NONE }
89};
90
91struct netid_af {
92 const char *netid;
93 int af;
94 int protocol;
95};
96
97static const struct netid_af na_cvt[] = {
98 { "udp", AF_INET, IPPROTO_UDP },
99 { "tcp", AF_INET, IPPROTO_TCP },
100#ifdef INET6
101 { "udp6", AF_INET6, IPPROTO_UDP },
102 { "tcp6", AF_INET6, IPPROTO_TCP },
103#endif
104 { "local", AF_LOCAL, 0 }
105};
106
107struct rpc_createerr rpc_createerr;
108
109/*
110 * Find the appropriate buffer size
111 */
112u_int
113/*ARGSUSED*/
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 */
140u_int
141__rpc_get_a_size(af)
142 int af;
143{
144 switch (af) {
145 case AF_INET:
146 return sizeof (struct sockaddr_in);
147#ifdef INET6
148 case AF_INET6:
149 return sizeof (struct sockaddr_in6);
150#endif
151 case AF_LOCAL:
152 return sizeof (struct sockaddr_un);
153 default:
154 break;
155 }
156 return ((u_int)RPC_MAXADDRSIZE);
157}
158
159#if 0
160
161/*
162 * Used to ping the NULL procedure for clnt handle.
163 * Returns NULL if fails, else a non-NULL pointer.
164 */
165void *
166rpc_nullproc(clnt)
167 CLIENT *clnt;
168{
169 struct timeval TIMEOUT = {25, 0};
170
171 if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL,
172 (xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
173 return (NULL);
174 }
175 return ((void *) clnt);
176}
177
178#endif
179
180int
181__rpc_socket2sockinfo(struct socket *so, struct __rpc_sockinfo *sip)
182{
183 int type, proto;
184 struct sockaddr *sa;
185 sa_family_t family;
186 struct sockopt opt;
187 int error;
188
189 error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
190 if (error)
191 return 0;
192
193 sip->si_alen = sa->sa_len;
194 family = sa->sa_family;
195 free(sa, M_SONAME);
196
197 opt.sopt_dir = SOPT_GET;
198 opt.sopt_level = SOL_SOCKET;
199 opt.sopt_name = SO_TYPE;
200 opt.sopt_val = &type;
201 opt.sopt_valsize = sizeof type;
202 opt.sopt_td = NULL;
203 error = sogetopt(so, &opt);
204 if (error)
205 return 0;
206
207 /* XXX */
208 if (family != AF_LOCAL) {
209 if (type == SOCK_STREAM)
210 proto = IPPROTO_TCP;
211 else if (type == SOCK_DGRAM)
212 proto = IPPROTO_UDP;
213 else
214 return 0;
215 } else
216 proto = 0;
217
218 sip->si_af = family;
219 sip->si_proto = proto;
220 sip->si_socktype = type;
221
222 return 1;
223}
224
225/*
226 * Linear search, but the number of entries is small.
227 */
228int
229__rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip)
230{
231 int i;
232
233 for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++)
234 if (strcmp(na_cvt[i].netid, nconf->nc_netid) == 0 || (
235 strcmp(nconf->nc_netid, "unix") == 0 &&
236 strcmp(na_cvt[i].netid, "local") == 0)) {
237 sip->si_af = na_cvt[i].af;
238 sip->si_proto = na_cvt[i].protocol;
239 sip->si_socktype =
240 __rpc_seman2socktype((int)nconf->nc_semantics);
241 if (sip->si_socktype == -1)
242 return 0;
243 sip->si_alen = __rpc_get_a_size(sip->si_af);
244 return 1;
245 }
246
247 return 0;
248}
249
250struct socket *
251__rpc_nconf2socket(const struct netconfig *nconf)
252{
253 struct __rpc_sockinfo si;
254 struct socket *so;
255 int error;
256
257 if (!__rpc_nconf2sockinfo(nconf, &si))
258 return 0;
259
260 so = NULL;
261 error = socreate(si.si_af, &so, si.si_socktype, si.si_proto,
262 curthread->td_ucred, curthread);
263
264 if (error)
265 return NULL;
266 else
267 return so;
268}
269
270char *
271taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf)
272{
273 struct __rpc_sockinfo si;
274
275 if (!__rpc_nconf2sockinfo(nconf, &si))
276 return NULL;
277 return __rpc_taddr2uaddr_af(si.si_af, nbuf);
278}
279
280struct netbuf *
281uaddr2taddr(const struct netconfig *nconf, const char *uaddr)
282{
283 struct __rpc_sockinfo si;
284
285 if (!__rpc_nconf2sockinfo(nconf, &si))
286 return NULL;
287 return __rpc_uaddr2taddr_af(si.si_af, uaddr);
288}
289
290char *
291__rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
292{
293 char *ret;
294 struct sbuf sb;
295 struct sockaddr_in *sin;
296 struct sockaddr_un *sun;
297 char namebuf[INET_ADDRSTRLEN];
298#ifdef INET6
299 struct sockaddr_in6 *sin6;
300 char namebuf6[INET6_ADDRSTRLEN];
301#endif
302 u_int16_t port;
303
304 sbuf_new(&sb, NULL, 0, SBUF_AUTOEXTEND);
305
306 switch (af) {
307 case AF_INET:
308 sin = nbuf->buf;
309 if (__rpc_inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf)
310 == NULL)
311 return NULL;
312 port = ntohs(sin->sin_port);
313 if (sbuf_printf(&sb, "%s.%u.%u", namebuf,
314 ((uint32_t)port) >> 8,
315 port & 0xff) < 0)
316 return NULL;
317 break;
318#ifdef INET6
319 case AF_INET6:
320 sin6 = nbuf->buf;
321 if (__rpc_inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6)
322 == NULL)
323 return NULL;
324 port = ntohs(sin6->sin6_port);
325 if (sbuf_printf(&sb, "%s.%u.%u", namebuf6,
326 ((uint32_t)port) >> 8,
327 port & 0xff) < 0)
328 return NULL;
329 break;
330#endif
331 case AF_LOCAL:
332 sun = nbuf->buf;
333 if (sbuf_printf(&sb, "%.*s", (int)(sun->sun_len -
334 offsetof(struct sockaddr_un, sun_path)),
335 sun->sun_path) < 0)
336 return (NULL);
337 break;
338 default:
339 return NULL;
340 }
341
342 sbuf_finish(&sb);
343 ret = strdup(sbuf_data(&sb), M_RPC);
344 sbuf_delete(&sb);
345
346 return ret;
347}
348
349struct netbuf *
350__rpc_uaddr2taddr_af(int af, const char *uaddr)
351{
352 struct netbuf *ret = NULL;
353 char *addrstr, *p;
354 unsigned port, portlo, porthi;
355 struct sockaddr_in *sin;
356#ifdef INET6
357 struct sockaddr_in6 *sin6;
358#endif
359 struct sockaddr_un *sun;
360
361 port = 0;
362 sin = NULL;
363 addrstr = strdup(uaddr, M_RPC);
364 if (addrstr == NULL)
365 return NULL;
366
367 /*
368 * AF_LOCAL addresses are expected to be absolute
369 * pathnames, anything else will be AF_INET or AF_INET6.
370 */
371 if (*addrstr != '/') {
372 p = strrchr(addrstr, '.');
373 if (p == NULL)
374 goto out;
375 portlo = (unsigned)strtol(p + 1, NULL, 10);
376 *p = '\0';
377
378 p = strrchr(addrstr, '.');
379 if (p == NULL)
380 goto out;
381 porthi = (unsigned)strtol(p + 1, NULL, 10);
382 *p = '\0';
383 port = (porthi << 8) | portlo;
384 }
385
386 ret = (struct netbuf *)malloc(sizeof *ret, M_RPC, M_WAITOK);
387 if (ret == NULL)
388 goto out;
389
390 switch (af) {
391 case AF_INET:
392 sin = (struct sockaddr_in *)malloc(sizeof *sin, M_RPC,
393 M_WAITOK);
394 if (sin == NULL)
395 goto out;
396 memset(sin, 0, sizeof *sin);
397 sin->sin_family = AF_INET;
398 sin->sin_port = htons(port);
399 if (__rpc_inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) {
400 free(sin, M_RPC);
401 free(ret, M_RPC);
402 ret = NULL;
403 goto out;
404 }
405 sin->sin_len = ret->maxlen = ret->len = sizeof *sin;
406 ret->buf = sin;
407 break;
408#ifdef INET6
409 case AF_INET6:
410 sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6, M_RPC,
411 M_WAITOK);
412 if (sin6 == NULL)
413 goto out;
414 memset(sin6, 0, sizeof *sin6);
415 sin6->sin6_family = AF_INET6;
416 sin6->sin6_port = htons(port);
417 if (__rpc_inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) {
418 free(sin6, M_RPC);
419 free(ret, M_RPC);
420 ret = NULL;
421 goto out;
422 }
423 sin6->sin6_len = ret->maxlen = ret->len = sizeof *sin6;
424 ret->buf = sin6;
425 break;
426#endif
427 case AF_LOCAL:
428 sun = (struct sockaddr_un *)malloc(sizeof *sun, M_RPC,
429 M_WAITOK);
430 if (sun == NULL)
431 goto out;
432 memset(sun, 0, sizeof *sun);
433 sun->sun_family = AF_LOCAL;
434 strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1);
435 ret->len = ret->maxlen = sun->sun_len = SUN_LEN(sun);
436 ret->buf = sun;
437 break;
438 default:
439 break;
440 }
441out:
442 free(addrstr, M_RPC);
443 return ret;
444}
445
446int
447__rpc_seman2socktype(int semantics)
448{
449 switch (semantics) {
450 case NC_TPI_CLTS:
451 return SOCK_DGRAM;
452 case NC_TPI_COTS_ORD:
453 return SOCK_STREAM;
454 case NC_TPI_RAW:
455 return SOCK_RAW;
456 default:
457 break;
458 }
459
460 return -1;
461}
462
463int
464__rpc_socktype2seman(int socktype)
465{
466 switch (socktype) {
467 case SOCK_DGRAM:
468 return NC_TPI_CLTS;
469 case SOCK_STREAM:
470 return NC_TPI_COTS_ORD;
471 case SOCK_RAW:
472 return NC_TPI_RAW;
473 default:
474 break;
475 }
476
477 return -1;
478}
479
480/*
481 * Returns the type of the network as defined in <rpc/nettype.h>
482 * If nettype is NULL, it defaults to NETPATH.
483 */
484static int
485getnettype(const char *nettype)
486{
487 int i;
488
489 if ((nettype == NULL) || (nettype[0] == 0)) {
490 return (_RPC_NETPATH); /* Default */
491 }
492
493#if 0
494 nettype = strlocase(nettype);
495#endif
496 for (i = 0; _rpctypelist[i].name; i++)
497 if (strcasecmp(nettype, _rpctypelist[i].name) == 0) {
498 return (_rpctypelist[i].type);
499 }
500 return (_rpctypelist[i].type);
501}
502
503/*
504 * For the given nettype (tcp or udp only), return the first structure found.
505 * This should be freed by calling freenetconfigent()
506 */
507struct netconfig *
508__rpc_getconfip(const char *nettype)
509{
510 char *netid;
511 static char *netid_tcp = (char *) NULL;
512 static char *netid_udp = (char *) NULL;
513 struct netconfig *dummy;
514
515 if (!netid_udp && !netid_tcp) {
516 struct netconfig *nconf;
517 void *confighandle;
518
519 if (!(confighandle = setnetconfig())) {
520 log(LOG_ERR, "rpc: failed to open " NETCONFIG);
521 return (NULL);
522 }
523 while ((nconf = getnetconfig(confighandle)) != NULL) {
524 if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
525 if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
526 netid_tcp = strdup(nconf->nc_netid,
527 M_RPC);
528 } else
529 if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
530 netid_udp = strdup(nconf->nc_netid,
531 M_RPC);
532 }
533 }
534 }
535 endnetconfig(confighandle);
536 }
537 if (strcmp(nettype, "udp") == 0)
538 netid = netid_udp;
539 else if (strcmp(nettype, "tcp") == 0)
540 netid = netid_tcp;
541 else {
542 return (NULL);
543 }
544 if ((netid == NULL) || (netid[0] == 0)) {
545 return (NULL);
546 }
547 dummy = getnetconfigent(netid);
548 return (dummy);
549}
550
551/*
552 * Returns the type of the nettype, which should then be used with
553 * __rpc_getconf().
554 *
555 * For simplicity in the kernel, we don't support the NETPATH
556 * environment variable. We behave as userland would then NETPATH is
557 * unset, i.e. iterate over all visible entries in netconfig.
558 */
559void *
560__rpc_setconf(nettype)
561 const char *nettype;
562{
563 struct handle *handle;
564
565 handle = (struct handle *) malloc(sizeof (struct handle),
566 M_RPC, M_WAITOK);
567 switch (handle->nettype = getnettype(nettype)) {
568 case _RPC_NETPATH:
569 case _RPC_CIRCUIT_N:
570 case _RPC_DATAGRAM_N:
571 if (!(handle->nhandle = setnetconfig()))
572 goto failed;
573 handle->nflag = TRUE;
574 break;
575 case _RPC_VISIBLE:
576 case _RPC_CIRCUIT_V:
577 case _RPC_DATAGRAM_V:
578 case _RPC_TCP:
579 case _RPC_UDP:
580 if (!(handle->nhandle = setnetconfig())) {
581 log(LOG_ERR, "rpc: failed to open " NETCONFIG);
582 goto failed;
583 }
584 handle->nflag = FALSE;
585 break;
586 default:
587 goto failed;
588 }
589
590 return (handle);
591
592failed:
593 free(handle, M_RPC);
594 return (NULL);
595}
596
597/*
598 * Returns the next netconfig struct for the given "net" type.
599 * __rpc_setconf() should have been called previously.
600 */
601struct netconfig *
602__rpc_getconf(void *vhandle)
603{
604 struct handle *handle;
605 struct netconfig *nconf;
606
607 handle = (struct handle *)vhandle;
608 if (handle == NULL) {
609 return (NULL);
610 }
611 for (;;) {
612 if (handle->nflag) {
613 nconf = getnetconfig(handle->nhandle);
614 if (nconf && !(nconf->nc_flag & NC_VISIBLE))
615 continue;
616 } else {
617 nconf = getnetconfig(handle->nhandle);
618 }
619 if (nconf == NULL)
620 break;
621 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
622 (nconf->nc_semantics != NC_TPI_COTS) &&
623 (nconf->nc_semantics != NC_TPI_COTS_ORD))
624 continue;
625 switch (handle->nettype) {
626 case _RPC_VISIBLE:
627 if (!(nconf->nc_flag & NC_VISIBLE))
628 continue;
629 /* FALLTHROUGH */
630 case _RPC_NETPATH: /* Be happy */
631 break;
632 case _RPC_CIRCUIT_V:
633 if (!(nconf->nc_flag & NC_VISIBLE))
634 continue;
635 /* FALLTHROUGH */
636 case _RPC_CIRCUIT_N:
637 if ((nconf->nc_semantics != NC_TPI_COTS) &&
638 (nconf->nc_semantics != NC_TPI_COTS_ORD))
639 continue;
640 break;
641 case _RPC_DATAGRAM_V:
642 if (!(nconf->nc_flag & NC_VISIBLE))
643 continue;
644 /* FALLTHROUGH */
645 case _RPC_DATAGRAM_N:
646 if (nconf->nc_semantics != NC_TPI_CLTS)
647 continue;
648 break;
649 case _RPC_TCP:
650 if (((nconf->nc_semantics != NC_TPI_COTS) &&
651 (nconf->nc_semantics != NC_TPI_COTS_ORD)) ||
652 (strcmp(nconf->nc_protofmly, NC_INET)
653#ifdef INET6
654 && strcmp(nconf->nc_protofmly, NC_INET6))
655#else
656 )
657#endif
658 ||
659 strcmp(nconf->nc_proto, NC_TCP))
660 continue;
661 break;
662 case _RPC_UDP:
663 if ((nconf->nc_semantics != NC_TPI_CLTS) ||
664 (strcmp(nconf->nc_protofmly, NC_INET)
665#ifdef INET6
666 && strcmp(nconf->nc_protofmly, NC_INET6))
667#else
668 )
669#endif
670 ||
671 strcmp(nconf->nc_proto, NC_UDP))
672 continue;
673 break;
674 }
675 break;
676 }
677 return (nconf);
678}
679
680void
681__rpc_endconf(vhandle)
682 void * vhandle;
683{
684 struct handle *handle;
685
686 handle = (struct handle *) vhandle;
687 if (handle == NULL) {
688 return;
689 }
690 endnetconfig(handle->nhandle);
691 free(handle, M_RPC);
692}
693
694int
695__rpc_sockisbound(struct socket *so)
696{
697 struct sockaddr *sa;
698 int error, bound;
699
700 error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
701 if (error)
702 return (0);
703
704 switch (sa->sa_family) {
705 case AF_INET:
706 bound = (((struct sockaddr_in *) sa)->sin_port != 0);
707 break;
708#ifdef INET6
709 case AF_INET6:
710 bound = (((struct sockaddr_in6 *) sa)->sin6_port != 0);
711 break;
712#endif
713 case AF_LOCAL:
714 /* XXX check this */
715 bound = (((struct sockaddr_un *) sa)->sun_path[0] != '\0');
716 break;
717 default:
718 bound = FALSE;
719 break;
720 }
721
722 free(sa, M_SONAME);
723
724 return bound;
725}
726
727/*
728 * Implement XDR-style API for RPC call.
729 */
730enum clnt_stat
731clnt_call_private(
732 CLIENT *cl, /* client handle */
733 struct rpc_callextra *ext, /* call metadata */
734 rpcproc_t proc, /* procedure number */
735 xdrproc_t xargs, /* xdr routine for args */
736 void *argsp, /* pointer to args */
737 xdrproc_t xresults, /* xdr routine for results */
738 void *resultsp, /* pointer to results */
739 struct timeval utimeout) /* seconds to wait before giving up */
740{
741 XDR xdrs;
742 struct mbuf *mreq;
743 struct mbuf *mrep;
744 enum clnt_stat stat;
745
746 MGET(mreq, M_WAIT, MT_DATA);
747 MCLGET(mreq, M_WAIT);
748 mreq->m_len = 0;
749
750 xdrmbuf_create(&xdrs, mreq, XDR_ENCODE);
751 if (!xargs(&xdrs, argsp)) {
752 m_freem(mreq);
753 return (RPC_CANTENCODEARGS);
754 }
755 XDR_DESTROY(&xdrs);
756
757 stat = CLNT_CALL_MBUF(cl, ext, proc, mreq, &mrep, utimeout);
758 m_freem(mreq);
759
760 if (stat == RPC_SUCCESS) {
761 xdrmbuf_create(&xdrs, mrep, XDR_DECODE);
762 if (!xresults(&xdrs, resultsp)) {
763 XDR_DESTROY(&xdrs);
764 return (RPC_CANTDECODERES);
765 }
766 XDR_DESTROY(&xdrs);
767 }
768
769 return (stat);
770}
771
772/*
773 * Bind a socket to a privileged IP port
774 */
775int
776bindresvport(struct socket *so, struct sockaddr *sa)
777{
778 int old, error, af;
779 bool_t freesa = FALSE;
780 struct sockaddr_in *sin;
781#ifdef INET6
782 struct sockaddr_in6 *sin6;
783#endif
784 struct sockopt opt;
785 int proto, portrange, portlow;
786 u_int16_t *portp;
787 socklen_t salen;
788
789 if (sa == NULL) {
790 error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
791 if (error)
792 return (error);
793 freesa = TRUE;
794 af = sa->sa_family;
795 salen = sa->sa_len;
796 memset(sa, 0, sa->sa_len);
797 } else {
798 af = sa->sa_family;
799 salen = sa->sa_len;
800 }
801
802 switch (af) {
803 case AF_INET:
804 proto = IPPROTO_IP;
805 portrange = IP_PORTRANGE;
806 portlow = IP_PORTRANGE_LOW;
807 sin = (struct sockaddr_in *)sa;
808 portp = &sin->sin_port;
809 break;
810#ifdef INET6
811 case AF_INET6:
812 proto = IPPROTO_IPV6;
813 portrange = IPV6_PORTRANGE;
814 portlow = IPV6_PORTRANGE_LOW;
815 sin6 = (struct sockaddr_in6 *)sa;
816 portp = &sin6->sin6_port;
817 break;
818#endif
819 default:
820 return (EPFNOSUPPORT);
821 }
822
823 sa->sa_family = af;
824 sa->sa_len = salen;
825
826 if (*portp == 0) {
|