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4729 __rpcb_findaddr_timed should try rpcbind protocol 4 first
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--- old/usr/src/lib/libnsl/rpc/rpcb_clnt.c
+++ new/usr/src/lib/libnsl/rpc/rpcb_clnt.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License, Version 1.0 only
6 6 * (the "License"). You may not use this file except in compliance
7 7 * with the License.
8 8 *
9 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 10 * or http://www.opensolaris.org/os/licensing.
11 11 * See the License for the specific language governing permissions
12 12 * and limitations under the License.
13 13 *
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14 14 * When distributing Covered Code, include this CDDL HEADER in each
15 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 16 * If applicable, add the following below this CDDL HEADER, with the
17 17 * fields enclosed by brackets "[]" replaced with your own identifying
18 18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 19 *
20 20 * CDDL HEADER END
21 21 */
22 22
23 23 /*
24 + * Copyright 2014 Gary Mills
24 25 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25 26 * Use is subject to license terms.
26 27 */
27 28
28 29 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
29 30 /* All Rights Reserved */
30 31 /*
31 32 * Portions of this source code were derived from Berkeley
32 33 * 4.3 BSD under license from the Regents of the University of
33 34 * California.
34 35 */
35 36
36 -#pragma ident "%Z%%M% %I% %E% SMI"
37 -
38 37 /*
39 38 * interface to rpcbind rpc service.
40 39 */
41 40
42 41 #include "mt.h"
43 42 #include "rpc_mt.h"
44 43 #include <assert.h>
45 44 #include <rpc/rpc.h>
46 45 #include <rpc/rpcb_prot.h>
47 46 #include <netconfig.h>
48 47 #include <netdir.h>
49 48 #include <rpc/nettype.h>
50 49 #include <syslog.h>
51 50 #ifdef PORTMAP
52 51 #include <netinet/in.h> /* FOR IPPROTO_TCP/UDP definitions */
53 52 #include <rpc/pmap_prot.h>
54 53 #endif
55 -#ifdef ND_DEBUG
56 -#include <stdio.h>
57 -#endif
58 54 #include <sys/utsname.h>
59 55 #include <errno.h>
60 56 #include <stdlib.h>
61 57 #include <string.h>
62 58 #include <unistd.h>
63 59
64 60 static struct timeval tottimeout = { 60, 0 };
65 61 static const struct timeval rmttimeout = { 3, 0 };
66 62 static struct timeval rpcbrmttime = { 15, 0 };
67 63
68 64 extern bool_t xdr_wrapstring(XDR *, char **);
69 65
70 66 static const char nullstring[] = "\000";
71 67
72 68 extern CLIENT *_clnt_tli_create_timed(int, const struct netconfig *,
73 69 struct netbuf *, rpcprog_t, rpcvers_t, uint_t, uint_t,
74 70 const struct timeval *);
75 71
76 72 static CLIENT *_getclnthandle_timed(char *, struct netconfig *, char **,
77 73 struct timeval *);
78 74
79 75
80 76 /*
81 77 * The life time of a cached entry should not exceed 5 minutes
82 78 * since automountd attempts an unmount every 5 minutes.
83 79 * It is arbitrarily set a little lower (3 min = 180 sec)
84 80 * to reduce the time during which an entry is stale.
85 81 */
86 82 #define CACHE_TTL 180
87 83 #define CACHESIZE 6
88 84
89 85 struct address_cache {
90 86 char *ac_host;
91 87 char *ac_netid;
92 88 char *ac_uaddr;
93 89 struct netbuf *ac_taddr;
94 90 struct address_cache *ac_next;
95 91 time_t ac_maxtime;
96 92 };
97 93
98 94 static struct address_cache *front;
99 95 static int cachesize;
100 96
101 97 extern int lowvers;
102 98 extern int authdes_cachesz;
103 99 /*
104 100 * This routine adjusts the timeout used for calls to the remote rpcbind.
105 101 * Also, this routine can be used to set the use of portmapper version 2
106 102 * only when doing rpc_broadcasts
107 103 * These are private routines that may not be provided in future releases.
108 104 */
109 105 bool_t
110 106 __rpc_control(int request, void *info)
111 107 {
112 108 switch (request) {
113 109 case CLCR_GET_RPCB_TIMEOUT:
114 110 *(struct timeval *)info = tottimeout;
115 111 break;
116 112 case CLCR_SET_RPCB_TIMEOUT:
117 113 tottimeout = *(struct timeval *)info;
118 114 break;
119 115 case CLCR_GET_LOWVERS:
120 116 *(int *)info = lowvers;
121 117 break;
122 118 case CLCR_SET_LOWVERS:
123 119 lowvers = *(int *)info;
124 120 break;
125 121 case CLCR_GET_RPCB_RMTTIME:
126 122 *(struct timeval *)info = rpcbrmttime;
127 123 break;
128 124 case CLCR_SET_RPCB_RMTTIME:
129 125 rpcbrmttime = *(struct timeval *)info;
130 126 break;
131 127 case CLCR_GET_CRED_CACHE_SZ:
132 128 *(int *)info = authdes_cachesz;
133 129 break;
134 130 case CLCR_SET_CRED_CACHE_SZ:
135 131 authdes_cachesz = *(int *)info;
136 132 break;
137 133 default:
138 134 return (FALSE);
139 135 }
140 136 return (TRUE);
141 137 }
142 138
143 139 /*
144 140 * It might seem that a reader/writer lock would be more reasonable here.
145 141 * However because getclnthandle(), the only user of the cache functions,
146 142 * may do a delete_cache() operation if a check_cache() fails to return an
147 143 * address useful to clnt_tli_create(), we may as well use a mutex.
148 144 */
149 145 /*
150 146 * As it turns out, if the cache lock is *not* a reader/writer lock, we will
151 147 * block all clnt_create's if we are trying to connect to a host that's down,
152 148 * since the lock will be held all during that time.
153 149 */
154 150 extern rwlock_t rpcbaddr_cache_lock;
155 151
156 152 /*
157 153 * The routines check_cache(), add_cache(), delete_cache() manage the
158 154 * cache of rpcbind addresses for (host, netid).
159 155 */
160 156
161 157 static struct address_cache *
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162 158 check_cache(char *host, char *netid)
163 159 {
164 160 struct address_cache *cptr;
165 161
166 162 /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */
167 163
168 164 assert(RW_READ_HELD(&rpcbaddr_cache_lock));
169 165 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) {
170 166 if ((strcmp(cptr->ac_host, host) == 0) &&
171 167 (strcmp(cptr->ac_netid, netid) == 0) &&
172 - (time(NULL) <= cptr->ac_maxtime)) {
173 -#ifdef ND_DEBUG
174 - fprintf(stderr, "Found cache entry for %s: %s\n",
175 - host, netid);
176 -#endif
168 + (time(NULL) <= cptr->ac_maxtime)) {
177 169 return (cptr);
178 170 }
179 171 }
180 172 return (NULL);
181 173 }
182 174
183 175 static void
184 176 delete_cache(struct netbuf *addr)
185 177 {
186 178 struct address_cache *cptr, *prevptr = NULL;
187 179
188 180 /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */
189 181 assert(RW_WRITE_HELD(&rpcbaddr_cache_lock));
190 182 for (cptr = front; cptr != NULL; cptr = cptr->ac_next) {
191 183 if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) {
192 184 free(cptr->ac_host);
193 185 free(cptr->ac_netid);
194 186 free(cptr->ac_taddr->buf);
195 187 free(cptr->ac_taddr);
196 188 if (cptr->ac_uaddr)
197 189 free(cptr->ac_uaddr);
198 190 if (prevptr)
199 191 prevptr->ac_next = cptr->ac_next;
200 192 else
201 193 front = cptr->ac_next;
202 194 free(cptr);
203 195 cachesize--;
204 196 break;
205 197 }
206 198 prevptr = cptr;
207 199 }
208 200 }
209 201
210 202 static void
211 203 add_cache(char *host, char *netid, struct netbuf *taddr, char *uaddr)
212 204 {
213 205 struct address_cache *ad_cache, *cptr, *prevptr;
214 206
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215 207 ad_cache = malloc(sizeof (struct address_cache));
216 208 if (!ad_cache) {
217 209 goto memerr;
218 210 }
219 211 ad_cache->ac_maxtime = time(NULL) + CACHE_TTL;
220 212 ad_cache->ac_host = strdup(host);
221 213 ad_cache->ac_netid = strdup(netid);
222 214 ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL;
223 215 ad_cache->ac_taddr = malloc(sizeof (struct netbuf));
224 216 if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr ||
225 - (uaddr && !ad_cache->ac_uaddr)) {
217 + (uaddr && !ad_cache->ac_uaddr)) {
226 218 goto memerr1;
227 219 }
228 220
229 221 ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len;
230 222 ad_cache->ac_taddr->buf = malloc(taddr->len);
231 223 if (ad_cache->ac_taddr->buf == NULL) {
232 224 goto memerr1;
233 225 }
234 226
235 227 (void) memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len);
236 -#ifdef ND_DEBUG
237 - (void) fprintf(stderr, "Added to cache: %s : %s\n", host, netid);
238 -#endif
239 228
240 229 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */
241 230
242 231 (void) rw_wrlock(&rpcbaddr_cache_lock);
243 232 if (cachesize < CACHESIZE) {
244 233 ad_cache->ac_next = front;
245 234 front = ad_cache;
246 235 cachesize++;
247 236 } else {
248 237 /* Free the last entry */
249 238 cptr = front;
250 239 prevptr = NULL;
251 240 while (cptr->ac_next) {
252 241 prevptr = cptr;
253 242 cptr = cptr->ac_next;
254 243 }
255 244
256 -#ifdef ND_DEBUG
257 - fprintf(stderr, "Deleted from cache: %s : %s\n",
258 - cptr->ac_host, cptr->ac_netid);
259 -#endif
260 245 free(cptr->ac_host);
261 246 free(cptr->ac_netid);
262 247 free(cptr->ac_taddr->buf);
263 248 free(cptr->ac_taddr);
264 249 if (cptr->ac_uaddr)
265 250 free(cptr->ac_uaddr);
266 251
267 252 if (prevptr) {
268 253 prevptr->ac_next = NULL;
269 254 ad_cache->ac_next = front;
270 255 front = ad_cache;
271 256 } else {
272 257 front = ad_cache;
273 258 ad_cache->ac_next = NULL;
274 259 }
275 260 free(cptr);
276 261 }
277 262 (void) rw_unlock(&rpcbaddr_cache_lock);
278 263 return;
279 264 memerr1:
280 265 if (ad_cache->ac_host)
281 266 free(ad_cache->ac_host);
282 267 if (ad_cache->ac_netid)
283 268 free(ad_cache->ac_netid);
284 269 if (ad_cache->ac_uaddr)
285 270 free(ad_cache->ac_uaddr);
286 271 if (ad_cache->ac_taddr)
287 272 free(ad_cache->ac_taddr);
288 273 free(ad_cache);
289 274 memerr:
290 275 syslog(LOG_ERR, "add_cache : out of memory.");
291 276 }
292 277
293 278 /*
294 279 * This routine will return a client handle that is connected to the
295 280 * rpcbind. Returns NULL on error and free's everything.
296 281 */
297 282 static CLIENT *
298 283 getclnthandle(char *host, struct netconfig *nconf, char **targaddr)
299 284 {
300 285 return (_getclnthandle_timed(host, nconf, targaddr, NULL));
301 286 }
302 287
303 288 /*
304 289 * Same as getclnthandle() except it takes an extra timeout argument.
305 290 * This is for bug 4049792: clnt_create_timed does not timeout.
306 291 *
307 292 * If tp is NULL, use default timeout to get a client handle.
308 293 */
309 294 static CLIENT *
310 295 _getclnthandle_timed(char *host, struct netconfig *nconf, char **targaddr,
311 296 struct timeval *tp)
312 297 {
313 298 CLIENT *client = NULL;
314 299 struct netbuf *addr;
315 300 struct netbuf addr_to_delete;
316 301 struct nd_addrlist *nas;
317 302 struct nd_hostserv rpcbind_hs;
318 303 struct address_cache *ad_cache;
319 304 char *tmpaddr;
320 305 int neterr;
321 306 int j;
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322 307
323 308 /* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */
324 309
325 310 /* Get the address of the rpcbind. Check cache first */
326 311 addr_to_delete.len = 0;
327 312 (void) rw_rdlock(&rpcbaddr_cache_lock);
328 313 ad_cache = check_cache(host, nconf->nc_netid);
329 314 if (ad_cache != NULL) {
330 315 addr = ad_cache->ac_taddr;
331 316 client = _clnt_tli_create_timed(RPC_ANYFD, nconf, addr,
332 - RPCBPROG, RPCBVERS4, 0, 0, tp);
317 + RPCBPROG, RPCBVERS4, 0, 0, tp);
333 318 if (client != NULL) {
334 319 if (targaddr) {
335 320 /*
336 321 * case where a client handle is created
337 322 * without a targaddr and the handle is
338 323 * requested with a targaddr
339 324 */
340 325 if (ad_cache->ac_uaddr != NULL) {
341 326 *targaddr = strdup(ad_cache->ac_uaddr);
342 327 if (*targaddr == NULL) {
343 328 syslog(LOG_ERR,
344 329 "_getclnthandle_timed: strdup "
345 330 "failed.");
346 331 rpc_createerr.cf_stat =
347 - RPC_SYSTEMERROR;
332 + RPC_SYSTEMERROR;
348 333 (void) rw_unlock(
349 - &rpcbaddr_cache_lock);
334 + &rpcbaddr_cache_lock);
350 335 return (NULL);
351 336 }
352 337 } else {
353 338 *targaddr = NULL;
354 339 }
355 340 }
356 341 (void) rw_unlock(&rpcbaddr_cache_lock);
357 342 return (client);
358 343 }
359 344 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) {
360 345 (void) rw_unlock(&rpcbaddr_cache_lock);
361 346 return (NULL);
362 347 }
363 348 addr_to_delete.len = addr->len;
364 349 addr_to_delete.buf = malloc(addr->len);
365 350 if (addr_to_delete.buf == NULL) {
366 351 addr_to_delete.len = 0;
367 352 } else {
368 353 (void) memcpy(addr_to_delete.buf, addr->buf, addr->len);
369 354 }
370 355 }
371 356 (void) rw_unlock(&rpcbaddr_cache_lock);
372 357 if (addr_to_delete.len != 0) {
373 358 /*
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374 359 * Assume this may be due to cache data being
375 360 * outdated
376 361 */
377 362 (void) rw_wrlock(&rpcbaddr_cache_lock);
378 363 delete_cache(&addr_to_delete);
379 364 (void) rw_unlock(&rpcbaddr_cache_lock);
380 365 free(addr_to_delete.buf);
381 366 }
382 367 rpcbind_hs.h_host = host;
383 368 rpcbind_hs.h_serv = "rpcbind";
384 -#ifdef ND_DEBUG
385 - fprintf(stderr, "rpcbind client routines: diagnostics :\n");
386 - fprintf(stderr, "\tGetting address for (%s, %s, %s) ... \n",
387 - rpcbind_hs.h_host, rpcbind_hs.h_serv, nconf->nc_netid);
388 -#endif
389 369
390 370 if ((neterr = netdir_getbyname(nconf, &rpcbind_hs, &nas)) != 0) {
391 371 if (neterr == ND_NOHOST)
392 372 rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
393 373 else
394 374 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
395 375 return (NULL);
396 376 }
397 377 /* XXX nas should perhaps be cached for better performance */
398 378
399 379 for (j = 0; j < nas->n_cnt; j++) {
400 380 addr = &(nas->n_addrs[j]);
401 -#ifdef ND_DEBUG
402 -{
403 - int i;
404 - char *ua;
405 -
406 - ua = taddr2uaddr(nconf, &(nas->n_addrs[j]));
407 - fprintf(stderr, "Got it [%s]\n", ua);
408 - free(ua);
409 -
410 - fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n",
411 - addr->len, addr->maxlen);
412 - fprintf(stderr, "\tAddress is ");
413 - for (i = 0; i < addr->len; i++)
414 - fprintf(stderr, "%u.", addr->buf[i]);
415 - fprintf(stderr, "\n");
416 -}
417 -#endif
418 381 client = _clnt_tli_create_timed(RPC_ANYFD, nconf, addr, RPCBPROG,
419 - RPCBVERS4, 0, 0, tp);
382 + RPCBVERS4, 0, 0, tp);
420 383 if (client)
421 384 break;
422 385 }
423 -#ifdef ND_DEBUG
424 - if (!client) {
425 - clnt_pcreateerror("rpcbind clnt interface");
426 - }
427 -#endif
428 386
429 387 if (client) {
430 388 tmpaddr = targaddr ? taddr2uaddr(nconf, addr) : NULL;
431 389 add_cache(host, nconf->nc_netid, addr, tmpaddr);
432 390 if (targaddr) {
433 391 *targaddr = tmpaddr;
434 392 }
435 393 }
436 394 netdir_free((char *)nas, ND_ADDRLIST);
437 395 return (client);
438 396 }
439 397
440 398 /*
441 399 * This routine will return a client handle that is connected to the local
442 - * rpcbind. Returns NULL on error and free's everything.
400 + * rpcbind. Returns NULL on error.
443 401 */
444 402 static CLIENT *
445 403 local_rpcb(void)
446 404 {
447 405 static struct netconfig *loopnconf;
448 406 static char *hostname;
449 407 extern mutex_t loopnconf_lock;
450 408
451 -/* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */
409 +/* VARIABLES PROTECTED BY loopnconf_lock: hostname loopnconf */
452 410 (void) mutex_lock(&loopnconf_lock);
453 411 if (loopnconf == NULL) {
454 412 struct utsname utsname;
455 413 struct netconfig *nconf, *tmpnconf = NULL;
456 414 void *nc_handle;
457 415
458 416 if (hostname == NULL) {
459 417 #if defined(__i386) && !defined(__amd64)
460 418 if ((_nuname(&utsname) == -1) ||
419 + ((hostname = strdup(utsname.nodename)) == NULL)) {
461 420 #else
462 421 if ((uname(&utsname) == -1) ||
463 -#endif
464 422 ((hostname = strdup(utsname.nodename)) == NULL)) {
423 +#endif
465 424 syslog(LOG_ERR, "local_rpcb : strdup failed.");
466 425 rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
467 426 (void) mutex_unlock(&loopnconf_lock);
468 427 return (NULL);
469 428 }
429 + /* hostname is never freed */
470 430 }
471 431 nc_handle = setnetconfig();
472 432 if (nc_handle == NULL) {
473 433 /* fails to open netconfig file */
474 434 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
475 435 (void) mutex_unlock(&loopnconf_lock);
476 436 return (NULL);
477 437 }
478 438 while (nconf = getnetconfig(nc_handle)) {
479 439 if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
480 440 tmpnconf = nconf;
481 441 if (nconf->nc_semantics == NC_TPI_CLTS)
482 442 break;
483 443 }
484 444 }
485 445 if (tmpnconf == NULL) {
486 446 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
487 447 (void) mutex_unlock(&loopnconf_lock);
488 448 return (NULL);
489 449 }
490 450 loopnconf = getnetconfigent(tmpnconf->nc_netid);
491 451 /* loopnconf is never freed */
492 452 (void) endnetconfig(nc_handle);
493 453 }
494 454 (void) mutex_unlock(&loopnconf_lock);
495 455 return (getclnthandle(hostname, loopnconf, NULL));
496 456 }
497 457
498 458 /*
499 459 * Set a mapping between program, version and address.
500 460 * Calls the rpcbind service to do the mapping.
501 461 */
502 462 bool_t
503 463 rpcb_set(const rpcprog_t program, const rpcvers_t version,
504 464 const struct netconfig *nconf, const struct netbuf *address)
505 465 {
506 466 CLIENT *client;
507 467 bool_t rslt = FALSE;
508 468 RPCB parms;
509 469 char uidbuf[32];
510 470
511 471 /* parameter checking */
512 472 if (nconf == NULL) {
513 473 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
514 474 return (FALSE);
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515 475 }
516 476 if (address == NULL) {
517 477 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
518 478 return (FALSE);
519 479 }
520 480 client = local_rpcb();
521 481 if (!client)
522 482 return (FALSE);
523 483
524 484 parms.r_addr = taddr2uaddr((struct netconfig *)nconf,
525 - (struct netbuf *)address); /* convert to universal */
485 + (struct netbuf *)address); /* convert to universal */
526 486 if (!parms.r_addr) {
527 487 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
528 488 return (FALSE); /* no universal address */
529 489 }
530 490 parms.r_prog = program;
531 491 parms.r_vers = version;
532 492 parms.r_netid = nconf->nc_netid;
533 493 /*
534 494 * Though uid is not being used directly, we still send it for
535 495 * completeness. For non-unix platforms, perhaps some other
536 496 * string or an empty string can be sent.
537 497 */
538 498 (void) sprintf(uidbuf, "%d", (int)geteuid());
539 499 parms.r_owner = uidbuf;
540 500
541 501 CLNT_CALL(client, RPCBPROC_SET, (xdrproc_t)xdr_rpcb, (char *)&parms,
542 - (xdrproc_t)xdr_bool, (char *)&rslt, tottimeout);
502 + (xdrproc_t)xdr_bool, (char *)&rslt, tottimeout);
543 503
544 504 CLNT_DESTROY(client);
545 505 free(parms.r_addr);
546 506 return (rslt);
547 507 }
548 508
549 509 /*
550 510 * Remove the mapping between program, version and netbuf address.
551 511 * Calls the rpcbind service to do the un-mapping.
552 512 * If netbuf is NULL, unset for all the transports, otherwise unset
553 513 * only for the given transport.
554 514 */
555 515 bool_t
556 516 rpcb_unset(const rpcprog_t program, const rpcvers_t version,
557 517 const struct netconfig *nconf)
558 518 {
559 519 CLIENT *client;
560 520 bool_t rslt = FALSE;
561 521 RPCB parms;
562 522 char uidbuf[32];
563 523
564 524 client = local_rpcb();
565 525 if (!client)
566 526 return (FALSE);
567 527
568 528 parms.r_prog = program;
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569 529 parms.r_vers = version;
570 530 if (nconf)
571 531 parms.r_netid = nconf->nc_netid;
572 532 else
573 533 parms.r_netid = (char *)&nullstring[0]; /* unsets all */
574 534 parms.r_addr = (char *)&nullstring[0];
575 535 (void) sprintf(uidbuf, "%d", (int)geteuid());
576 536 parms.r_owner = uidbuf;
577 537
578 538 CLNT_CALL(client, RPCBPROC_UNSET, (xdrproc_t)xdr_rpcb, (char *)&parms,
579 - (xdrproc_t)xdr_bool, (char *)&rslt, tottimeout);
539 + (xdrproc_t)xdr_bool, (char *)&rslt, tottimeout);
580 540
581 541 CLNT_DESTROY(client);
582 542 return (rslt);
583 543 }
584 544
585 545 /*
586 546 * From the merged list, find the appropriate entry
587 547 */
588 548 static struct netbuf *
589 549 got_entry(rpcb_entry_list_ptr relp, struct netconfig *nconf)
590 550 {
591 551 struct netbuf *na = NULL;
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592 552 rpcb_entry_list_ptr sp;
593 553 rpcb_entry *rmap;
594 554
595 555 for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) {
596 556 rmap = &sp->rpcb_entry_map;
597 557 if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) &&
598 558 (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) &&
599 559 (nconf->nc_semantics == rmap->r_nc_semantics) &&
600 560 (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != NULL)) {
601 561 na = uaddr2taddr(nconf, rmap->r_maddr);
602 -#ifdef ND_DEBUG
603 - fprintf(stderr, "\tRemote address is [%s].\n",
604 - rmap->r_maddr);
605 - if (!na)
606 - fprintf(stderr,
607 - "\tCouldn't resolve remote address!\n");
608 -#endif
609 562 break;
610 563 }
611 564 }
612 565 return (na);
613 566 }
614 567
615 568 /*
616 569 * Quick check to see if rpcbind is up. Tries to connect over
617 570 * local transport.
618 571 */
619 572 bool_t
620 573 __rpcbind_is_up(void)
621 574 {
622 575 struct utsname name;
623 576 char uaddr[SYS_NMLN];
624 577 struct netbuf *addr;
625 578 int fd;
626 579 struct t_call *sndcall;
627 580 struct netconfig *netconf;
628 581 bool_t res;
629 582
630 583 #if defined(__i386) && !defined(__amd64)
631 584 if (_nuname(&name) == -1)
632 585 #else
633 586 if (uname(&name) == -1)
634 587 #endif
635 588 return (TRUE);
636 589
637 590 if ((fd = t_open("/dev/ticotsord", O_RDWR, NULL)) == -1)
638 591 return (TRUE);
639 592
640 593 if (t_bind(fd, NULL, NULL) == -1) {
641 594 (void) t_close(fd);
642 595 return (TRUE);
643 596 }
644 597
645 598 /* LINTED pointer cast */
646 599 if ((sndcall = (struct t_call *)t_alloc(fd, T_CALL, 0)) == NULL) {
647 600 (void) t_close(fd);
648 601 return (TRUE);
649 602 }
650 603
651 604 uaddr[0] = '\0';
652 605 (void) strcpy(uaddr, name.nodename);
653 606 (void) strcat(uaddr, ".rpc");
654 607 if ((netconf = getnetconfigent("ticotsord")) == NULL) {
655 608 (void) t_free((char *)sndcall, T_CALL);
656 609 (void) t_close(fd);
657 610 return (FALSE);
658 611 }
659 612 addr = uaddr2taddr(netconf, uaddr);
660 613 freenetconfigent(netconf);
661 614 if (addr == NULL || addr->buf == NULL) {
662 615 if (addr)
663 616 free(addr);
664 617 (void) t_free((char *)sndcall, T_CALL);
665 618 (void) t_close(fd);
666 619 return (FALSE);
667 620 }
668 621 sndcall->addr.maxlen = addr->maxlen;
669 622 sndcall->addr.len = addr->len;
670 623 sndcall->addr.buf = addr->buf;
671 624
672 625 if (t_connect(fd, sndcall, NULL) == -1)
673 626 res = FALSE;
674 627 else
675 628 res = TRUE;
676 629
677 630 sndcall->addr.maxlen = sndcall->addr.len = 0;
678 631 sndcall->addr.buf = NULL;
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679 632 (void) t_free((char *)sndcall, T_CALL);
680 633 free(addr->buf);
681 634 free(addr);
682 635 (void) t_close(fd);
683 636
684 637 return (res);
685 638 }
686 639
687 640
688 641 /*
689 - * An internal function which optimizes rpcb_getaddr function. It also
642 + * An internal function which optimizes rpcb_getaddr function. It returns
643 + * the universal address of the remote service or NULL. It also optionally
690 644 * returns the client handle that it uses to contact the remote rpcbind.
645 + * The caller will re-purpose the client to contact the remote service.
691 646 *
692 - * The algorithm used: If the transports is TCP or UDP, it first tries
693 - * version 2 (portmap), 4 and then 3 (svr4). This order should be
694 - * changed in the next OS release to 4, 2 and 3. We are assuming that by
695 - * that time, version 4 would be available on many machines on the network.
647 + * The algorithm used: First try version 4. Then try version 3 (svr4).
648 + * Finally, if the transport is TCP or UDP, try version 2 (portmap).
649 + * Version 4 is now available with all current systems on the network.
696 650 * With this algorithm, we get performance as well as a plan for
697 651 * obsoleting version 2.
698 652 *
699 - * For all other transports, the algorithm remains as 4 and then 3.
700 - *
701 653 * XXX: Due to some problems with t_connect(), we do not reuse the same client
702 654 * handle for COTS cases and hence in these cases we do not return the
703 655 * client handle. This code will change if t_connect() ever
704 656 * starts working properly. Also look under clnt_vc.c.
705 657 */
706 658 struct netbuf *
707 659 __rpcb_findaddr_timed(rpcprog_t program, rpcvers_t version,
708 660 struct netconfig *nconf, char *host, CLIENT **clpp, struct timeval *tp)
709 661 {
710 662 static bool_t check_rpcbind = TRUE;
711 663 CLIENT *client = NULL;
712 664 RPCB parms;
713 665 enum clnt_stat clnt_st;
714 666 char *ua = NULL;
715 667 uint_t vers;
716 668 struct netbuf *address = NULL;
717 - uint_t start_vers = RPCBVERS4;
669 + void *handle;
670 + rpcb_entry_list_ptr relp = NULL;
671 + bool_t tmp_client = FALSE;
718 672
719 673 /* parameter checking */
720 674 if (nconf == NULL) {
721 675 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
722 676 return (NULL);
723 677 }
724 678
725 679 parms.r_addr = NULL;
726 680
727 681 /*
728 682 * Use default total timeout if no timeout is specified.
729 683 */
730 684 if (tp == NULL)
731 685 tp = &tottimeout;
732 686
733 -#ifdef PORTMAP
734 - /* Try version 2 for TCP or UDP */
735 - if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
736 - ushort_t port = 0;
737 - struct netbuf remote;
738 - uint_t pmapvers = 2;
739 - struct pmap pmapparms;
740 -
741 - /*
742 - * Try UDP only - there are some portmappers out
743 - * there that use UDP only.
744 - */
745 - if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
746 - struct netconfig *newnconf;
747 - void *handle;
748 -
749 - if ((handle = __rpc_setconf("udp")) == NULL) {
750 - rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
751 - return (NULL);
752 - }
753 -
754 - /*
755 - * The following to reinforce that you can
756 - * only request for remote address through
757 - * the same transport you are requesting.
758 - * ie. requesting unversial address
759 - * of IPv4 has to be carried through IPv4.
760 - * Can't use IPv6 to send out the request.
761 - * The mergeaddr in rpcbind can't handle
762 - * this.
763 - */
764 - for (;;) {
765 - if ((newnconf = __rpc_getconf(handle))
766 - == NULL) {
767 - __rpc_endconf(handle);
768 - rpc_createerr.cf_stat =
769 - RPC_UNKNOWNPROTO;
770 - return (NULL);
771 - }
772 - /*
773 - * here check the protocol family to
774 - * be consistent with the request one
775 - */
776 - if (strcmp(newnconf->nc_protofmly,
777 - nconf->nc_protofmly) == NULL)
778 - break;
779 - }
780 -
781 - client = _getclnthandle_timed(host, newnconf,
782 - &parms.r_addr, tp);
783 - __rpc_endconf(handle);
784 - } else {
785 - client = _getclnthandle_timed(host, nconf,
786 - &parms.r_addr, tp);
787 - }
788 - if (client == NULL)
789 - return (NULL);
790 -
791 - /*
792 - * Set version and retry timeout.
793 - */
794 - CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
795 - CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers);
796 -
797 - pmapparms.pm_prog = program;
798 - pmapparms.pm_vers = version;
799 - pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ?
800 - IPPROTO_UDP : IPPROTO_TCP;
801 - pmapparms.pm_port = 0; /* not needed */
802 - clnt_st = CLNT_CALL(client, PMAPPROC_GETPORT,
803 - (xdrproc_t)xdr_pmap, (caddr_t)&pmapparms,
804 - (xdrproc_t)xdr_u_short, (caddr_t)&port,
805 - *tp);
806 - if (clnt_st != RPC_SUCCESS) {
807 - if ((clnt_st == RPC_PROGVERSMISMATCH) ||
808 - (clnt_st == RPC_PROGUNAVAIL))
809 - goto try_rpcbind; /* Try different versions */
810 - rpc_createerr.cf_stat = RPC_PMAPFAILURE;
811 - clnt_geterr(client, &rpc_createerr.cf_error);
812 - goto error;
813 - } else if (port == 0) {
814 - address = NULL;
815 - rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
816 - goto error;
817 - }
818 - port = htons(port);
819 - CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote);
820 - if (((address = malloc(sizeof (struct netbuf))) == NULL) ||
821 - ((address->buf = malloc(remote.len)) == NULL)) {
822 - rpc_createerr.cf_stat = RPC_SYSTEMERROR;
823 - clnt_geterr(client, &rpc_createerr.cf_error);
824 - if (address) {
825 - free(address);
826 - address = NULL;
827 - }
828 - goto error;
829 - }
830 - (void) memcpy(address->buf, remote.buf, remote.len);
831 - (void) memcpy(&address->buf[sizeof (short)], &port,
832 - sizeof (short));
833 - address->len = address->maxlen = remote.len;
834 - goto done;
835 - }
836 -#endif
837 -
838 -try_rpcbind:
839 687 /*
840 688 * Check if rpcbind is up. This prevents needless delays when
841 689 * accessing applications such as the keyserver while booting
842 690 * disklessly.
843 691 */
844 692 if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
845 693 if (!__rpcbind_is_up()) {
846 694 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
847 695 rpc_createerr.cf_error.re_errno = 0;
848 696 rpc_createerr.cf_error.re_terrno = 0;
849 697 goto error;
850 698 }
851 699 check_rpcbind = FALSE;
852 700 }
853 701
854 702 /*
855 - * Now we try version 4 and then 3.
856 - * We also send the remote system the address we used to
857 - * contact it in case it can help to connect back with us
703 + * First try version 4.
858 704 */
859 705 parms.r_prog = program;
860 706 parms.r_vers = version;
861 707 parms.r_owner = (char *)&nullstring[0]; /* not needed; */
862 708 /* just for xdring */
863 709 parms.r_netid = nconf->nc_netid; /* not really needed */
864 710
865 711 /*
866 712 * If a COTS transport is being used, try getting address via CLTS
867 713 * transport. This works only with version 4.
868 714 */
869 715 if (nconf->nc_semantics == NC_TPI_COTS_ORD ||
870 716 nconf->nc_semantics == NC_TPI_COTS) {
871 - void *handle;
872 - struct netconfig *nconf_clts;
873 - rpcb_entry_list_ptr relp = NULL;
717 + tmp_client = TRUE;
718 + if ((handle = __rpc_setconf("datagram_v")) != NULL) {
719 + struct netconfig *nconf_clts;
874 720
875 - if (client == NULL) {
876 - /* This did not go through the above PORTMAP/TCP code */
877 - if ((handle = __rpc_setconf("datagram_v")) != NULL) {
878 - while ((nconf_clts = __rpc_getconf(handle))
879 - != NULL) {
880 - if (strcmp(nconf_clts->nc_protofmly,
881 - nconf->nc_protofmly) != 0) {
882 - continue;
883 - }
884 - client = _getclnthandle_timed(host,
885 - nconf_clts, &parms.r_addr,
886 - tp);
887 - break;
721 + while ((nconf_clts = __rpc_getconf(handle)) != NULL) {
722 + if (strcmp(nconf_clts->nc_protofmly,
723 + nconf->nc_protofmly) != 0) {
724 + continue;
888 725 }
889 - __rpc_endconf(handle);
726 + client = _getclnthandle_timed(host, nconf_clts,
727 + &parms.r_addr, tp);
728 + break;
890 729 }
891 - if (client == NULL)
892 - goto regular_rpcbind; /* Go the regular way */
893 - } else {
894 - /* This is a UDP PORTMAP handle. Change to version 4 */
895 - vers = RPCBVERS4;
896 - CLNT_CONTROL(client, CLSET_VERS, (char *)&vers);
730 + __rpc_endconf(handle);
897 731 }
732 + } else {
733 + client = _getclnthandle_timed(host, nconf, &parms.r_addr, tp);
734 + /* Sets cf_error members on failure */
735 + }
736 +
737 + if (client != NULL) {
738 +
739 + /* Set rpcbind version 4 */
740 + vers = RPCBVERS4;
741 + CLNT_CONTROL(client, CLSET_VERS, (char *)&vers);
742 +
898 743 /*
899 744 * We also send the remote system the address we used to
900 745 * contact it in case it can help it connect back with us
901 746 */
902 747 if (parms.r_addr == NULL) {
903 748 parms.r_addr = strdup(""); /* for XDRing */
904 749 if (parms.r_addr == NULL) {
905 750 syslog(LOG_ERR, "__rpcb_findaddr_timed: "
906 - "strdup failed.");
751 + "strdup failed.");
752 + /* cf_error is still zeroed */
753 + rpc_createerr.cf_error.re_errno = errno;
907 754 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
908 - address = NULL;
909 755 goto error;
910 756 }
911 757 }
912 758
913 - CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
759 + CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT,
760 + (char *)&rpcbrmttime);
914 761
915 762 clnt_st = CLNT_CALL(client, RPCBPROC_GETADDRLIST,
916 - (xdrproc_t)xdr_rpcb, (char *)&parms,
917 - (xdrproc_t)xdr_rpcb_entry_list_ptr,
918 - (char *)&relp, *tp);
919 - if (clnt_st == RPC_SUCCESS) {
920 - if (address = got_entry(relp, nconf)) {
921 - xdr_free((xdrproc_t)xdr_rpcb_entry_list_ptr,
922 - (char *)&relp);
763 + (xdrproc_t)xdr_rpcb, (char *)&parms,
764 + (xdrproc_t)xdr_rpcb_entry_list_ptr, (char *)&relp, *tp);
765 + /* Sets error structure members in client handle */
766 + switch (clnt_st) {
767 + case RPC_SUCCESS: /* Call succeeded */
768 + address = got_entry(relp, nconf);
769 + xdr_free((xdrproc_t)xdr_rpcb_entry_list_ptr,
770 + (char *)&relp);
771 + if (address != NULL) {
772 + /* Program number and version number matched */
923 773 goto done;
924 774 }
925 - /* Entry not found for this transport */
926 - xdr_free((xdrproc_t)xdr_rpcb_entry_list_ptr,
927 - (char *)&relp);
775 + /* Program and version not found for this transport */
928 776 /*
929 - * XXX: should have perhaps returned with error but
777 + * XXX: should have returned with RPC_PROGUNAVAIL
778 + * or perhaps RPC_PROGNOTREGISTERED error but
930 779 * since the remote machine might not always be able
931 780 * to send the address on all transports, we try the
932 - * regular way with regular_rpcbind
781 + * regular way with version 3, then 2
933 782 */
934 - goto regular_rpcbind;
935 - } else if ((clnt_st == RPC_PROGVERSMISMATCH) ||
936 - (clnt_st == RPC_PROGUNAVAIL)) {
937 - start_vers = RPCBVERS; /* Try version 3 now */
938 - goto regular_rpcbind; /* Try different versions */
939 - } else {
940 - rpc_createerr.cf_stat = RPC_PMAPFAILURE;
783 + /* Try the next version */
784 + break;
785 + case RPC_PROGVERSMISMATCH: /* RPC protocol mismatch */
941 786 clnt_geterr(client, &rpc_createerr.cf_error);
787 + if (rpc_createerr.cf_error.re_vers.low > vers) {
788 + rpc_createerr.cf_stat = clnt_st;
789 + goto error; /* a new version, can't handle */
790 + }
791 + /* Try the next version */
792 + break;
793 + case RPC_PROCUNAVAIL: /* Procedure unavailable */
794 + case RPC_PROGUNAVAIL: /* Program not available */
795 + case RPC_TIMEDOUT: /* Call timed out */
796 + /* Try the next version */
797 + break;
798 + default:
799 + clnt_geterr(client, &rpc_createerr.cf_error);
800 + rpc_createerr.cf_stat = RPC_PMAPFAILURE;
942 801 goto error;
802 + break;
943 803 }
944 - }
945 804
946 -regular_rpcbind:
805 + } else {
947 806
948 - /* Now the same transport is to be used to get the address */
949 - if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) ||
950 - (nconf->nc_semantics == NC_TPI_COTS))) {
951 - /* A CLTS type of client - destroy it */
807 + /* No client */
808 + tmp_client = FALSE;
809 +
810 + } /* End of version 4 */
811 +
812 + /* Destroy a temporary client */
813 + if (client != NULL && tmp_client) {
952 814 CLNT_DESTROY(client);
953 815 client = NULL;
954 816 free(parms.r_addr);
955 817 parms.r_addr = NULL;
956 818 }
819 + tmp_client = FALSE;
957 820
821 + /*
822 + * Try version 3
823 + */
824 +
825 + /* Now the same transport is to be used to get the address */
958 826 if (client == NULL) {
959 827 client = _getclnthandle_timed(host, nconf, &parms.r_addr, tp);
960 - if (client == NULL) {
961 - address = NULL;
962 - goto error;
963 - }
828 + /* Sets cf_error members on failure */
964 829 }
965 - if (parms.r_addr == NULL) {
966 - parms.r_addr = strdup(""); /* for XDRing */
830 + address = NULL;
831 + if (client != NULL) {
967 832 if (parms.r_addr == NULL) {
968 - syslog(LOG_ERR, "__rpcb_findaddr_timed: "
969 - "strdup failed.");
970 - address = NULL;
971 - rpc_createerr.cf_stat = RPC_SYSTEMERROR;
972 - goto error;
833 + parms.r_addr = strdup(""); /* for XDRing */
834 + if (parms.r_addr == NULL) {
835 + syslog(LOG_ERR, "__rpcb_findaddr_timed: "
836 + "strdup failed.");
837 + /* cf_error is still zeroed */
838 + rpc_createerr.cf_error.re_errno = errno;
839 + rpc_createerr.cf_stat = RPC_SYSTEMERROR;
840 + goto error;
841 + }
973 842 }
974 - }
975 843
976 - /* First try from start_vers and then version 3 (RPCBVERS) */
977 -
978 - CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
979 - for (vers = start_vers; vers >= RPCBVERS; vers--) {
980 - /* Set the version */
844 + CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT,
845 + (char *)&rpcbrmttime);
846 + vers = RPCBVERS; /* Set the version */
981 847 CLNT_CONTROL(client, CLSET_VERS, (char *)&vers);
982 848 clnt_st = CLNT_CALL(client, RPCBPROC_GETADDR,
983 - (xdrproc_t)xdr_rpcb, (char *)&parms,
984 - (xdrproc_t)xdr_wrapstring,
985 - (char *)&ua, *tp);
986 - if (clnt_st == RPC_SUCCESS) {
987 - if ((ua == NULL) || (ua[0] == NULL)) {
988 - if (ua != NULL)
989 - xdr_free(xdr_wrapstring, (char *)&ua);
849 + (xdrproc_t)xdr_rpcb, (char *)&parms,
850 + (xdrproc_t)xdr_wrapstring, (char *)&ua, *tp);
851 + /* Sets error structure members in client handle */
852 + switch (clnt_st) {
853 + case RPC_SUCCESS: /* Call succeeded */
854 + if (ua != NULL) {
855 + if (ua[0] != '\0') {
856 + address = uaddr2taddr(nconf, ua);
857 + }
858 + xdr_free((xdrproc_t)xdr_wrapstring,
859 + (char *)&ua);
990 860
991 - /* address unknown */
861 + if (address != NULL) {
862 + goto done;
863 + }
864 + /* We don't know about your universal addr */
865 + /* cf_error is still zeroed */
992 866 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
993 867 goto error;
994 868 }
995 - address = uaddr2taddr(nconf, ua);
996 -#ifdef ND_DEBUG
997 - fprintf(stderr, "\tRemote address is [%s]\n", ua);
998 - if (!address)
999 - fprintf(stderr,
1000 - "\tCouldn't resolve remote address!\n");
869 +#ifndef PORTMAP
870 + clnt_geterr(client, &rpc_createerr.cf_error);
871 + rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
872 + goto error;
1001 873 #endif
1002 - xdr_free((xdrproc_t)xdr_wrapstring, (char *)&ua);
874 + /* Try the next version */
875 + break;
876 + case RPC_PROGVERSMISMATCH: /* RPC protocol mismatch */
877 + clnt_geterr(client, &rpc_createerr.cf_error);
878 +#ifdef PORTMAP
879 + if (rpc_createerr.cf_error.re_vers.low > vers) {
880 + rpc_createerr.cf_stat = clnt_st;
881 + goto error; /* a new version, can't handle */
882 + }
883 +#else
884 + rpc_createerr.cf_stat = clnt_st;
885 + goto error;
886 +#endif
887 + /* Try the next version */
888 + break;
889 +#ifdef PORTMAP
890 + case RPC_PROCUNAVAIL: /* Procedure unavailable */
891 + case RPC_PROGUNAVAIL: /* Program not available */
892 + case RPC_TIMEDOUT: /* Call timed out */
893 + /* Try the next version */
894 + break;
895 +#endif
896 + default:
897 + clnt_geterr(client, &rpc_createerr.cf_error);
898 + rpc_createerr.cf_stat = RPC_PMAPFAILURE;
899 + goto error;
900 + break;
901 + }
902 + } /* End of version 3 */
903 +#ifndef PORTMAP
904 + /* cf_error members set by creation failure */
905 + rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
906 +#endif
907 + /*
908 + * Try version 2
909 + */
1003 910
1004 - if (!address) {
1005 - /* We don't know about your universal address */
1006 - rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
911 +#ifdef PORTMAP
912 + /* Try version 2 for TCP or UDP */
913 + if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
914 + ushort_t port = 0;
915 + struct netbuf remote;
916 + uint_t pmapvers = 2;
917 + struct pmap pmapparms;
918 +
919 + /*
920 + * Try UDP only - there are some portmappers out
921 + * there that use UDP only.
922 + */
923 + if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
924 + struct netconfig *newnconf;
925 +
926 + if (client != NULL) {
927 + CLNT_DESTROY(client);
928 + client = NULL;
929 + free(parms.r_addr);
930 + parms.r_addr = NULL;
931 + }
932 + if ((handle = __rpc_setconf("udp")) == NULL) {
933 + /* cf_error is still zeroed */
934 + rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1007 935 goto error;
1008 936 }
1009 - goto done;
937 +
938 + /*
939 + * The following to reinforce that you can
940 + * only request for remote address through
941 + * the same transport you are requesting.
942 + * ie. requesting unversial address
943 + * of IPv4 has to be carried through IPv4.
944 + * Can't use IPv6 to send out the request.
945 + * The mergeaddr in rpcbind can't handle
946 + * this.
947 + */
948 + for (;;) {
949 + if ((newnconf = __rpc_getconf(handle))
950 + == NULL) {
951 + __rpc_endconf(handle);
952 + /* cf_error is still zeroed */
953 + rpc_createerr.cf_stat =
954 + RPC_UNKNOWNPROTO;
955 + goto error;
956 + }
957 + /*
958 + * here check the protocol family to
959 + * be consistent with the request one
960 + */
961 + if (strcmp(newnconf->nc_protofmly,
962 + nconf->nc_protofmly) == 0)
963 + break;
964 + }
965 +
966 + client = _getclnthandle_timed(host, newnconf,
967 + &parms.r_addr, tp);
968 + /* Sets cf_error members on failure */
969 + __rpc_endconf(handle);
970 + tmp_client = TRUE;
1010 971 }
1011 - if (clnt_st == RPC_PROGVERSMISMATCH) {
1012 - struct rpc_err rpcerr;
972 + if (client == NULL) {
973 + /* cf_error members set by creation failure */
974 + rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
975 + tmp_client = FALSE;
976 + goto error;
977 + }
1013 978
1014 - clnt_geterr(client, &rpcerr);
1015 - if (rpcerr.re_vers.low > RPCBVERS4)
1016 - goto error; /* a new version, can't handle */
1017 - } else if (clnt_st != RPC_PROGUNAVAIL) {
1018 - /* Cant handle this error */
979 + /*
980 + * Set version and retry timeout.
981 + */
982 + CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime);
983 + CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers);
984 +
985 + pmapparms.pm_prog = program;
986 + pmapparms.pm_vers = version;
987 + pmapparms.pm_prot = (strcmp(nconf->nc_proto, NC_TCP) != 0) ?
988 + IPPROTO_UDP : IPPROTO_TCP;
989 + pmapparms.pm_port = 0; /* not needed */
990 + clnt_st = CLNT_CALL(client, PMAPPROC_GETPORT,
991 + (xdrproc_t)xdr_pmap, (caddr_t)&pmapparms,
992 + (xdrproc_t)xdr_u_short, (caddr_t)&port, *tp);
993 + /* Sets error structure members in client handle */
994 + if (clnt_st != RPC_SUCCESS) {
995 + clnt_geterr(client, &rpc_createerr.cf_error);
996 + rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1019 997 goto error;
998 + } else if (port == 0) {
999 + /* cf_error is still zeroed */
1000 + rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
1001 + goto error;
1020 1002 }
1003 + port = htons(port);
1004 + CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote);
1005 + if (((address = malloc(sizeof (struct netbuf))) == NULL) ||
1006 + ((address->buf = malloc(remote.len)) == NULL)) {
1007 + /* cf_error is still zeroed */
1008 + rpc_createerr.cf_error.re_errno = errno;
1009 + rpc_createerr.cf_stat = RPC_SYSTEMERROR;
1010 + free(address);
1011 + address = NULL;
1012 + goto error;
1013 + }
1014 + (void) memcpy(address->buf, remote.buf, remote.len);
1015 + (void) memcpy(&address->buf[sizeof (short)], &port,
1016 + sizeof (short));
1017 + address->len = address->maxlen = remote.len;
1018 + goto done;
1019 + } else {
1020 + /* Not NC_INET */
1021 + if (client != NULL && clnt_st != RPC_SUCCESS) {
1022 + clnt_geterr(client, &rpc_createerr.cf_error);
1023 + rpc_createerr.cf_stat = clnt_st;
1024 + } else {
1025 + /* No client handle */
1026 + rpc_createerr.cf_stat = RPC_SYSTEMERROR;
1027 + }
1021 1028 }
1029 +#endif
1022 1030
1023 - if ((address == NULL) || (address->len == 0)) {
1024 - rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
1025 - clnt_geterr(client, &rpc_createerr.cf_error);
1026 - }
1027 -
1028 1031 error:
1029 - if (client) {
1032 + /* Return NULL address and NULL client */
1033 + address = NULL;
1034 + if (client != NULL) {
1030 1035 CLNT_DESTROY(client);
1031 1036 client = NULL;
1032 1037 }
1038 +
1033 1039 done:
1034 - if (nconf->nc_semantics != NC_TPI_CLTS) {
1035 - /* This client is the connectionless one */
1036 - if (client) {
1037 - CLNT_DESTROY(client);
1038 - client = NULL;
1039 - }
1040 + /* Return an address and optional client */
1041 + if (client != NULL && tmp_client) {
1042 + /* This client is the temporary one */
1043 + CLNT_DESTROY(client);
1044 + client = NULL;
1040 1045 }
1041 - if (clpp) {
1046 + if (clpp != NULL) {
1042 1047 *clpp = client;
1043 - } else if (client) {
1048 + } else if (client != NULL) {
1044 1049 CLNT_DESTROY(client);
1045 1050 }
1046 - if (parms.r_addr)
1047 - free(parms.r_addr);
1051 + free(parms.r_addr);
1048 1052 return (address);
1049 1053 }
1050 1054
1051 1055
1052 1056 /*
1053 1057 * Find the mapped address for program, version.
1054 1058 * Calls the rpcbind service remotely to do the lookup.
1055 1059 * Uses the transport specified in nconf.
1056 1060 * Returns FALSE (0) if no map exists, else returns 1.
1057 1061 *
1058 1062 * Assuming that the address is all properly allocated
1059 1063 */
1060 1064 int
1061 1065 rpcb_getaddr(const rpcprog_t program, const rpcvers_t version,
1062 1066 const struct netconfig *nconf, struct netbuf *address, const char *host)
1063 1067 {
1064 1068 struct netbuf *na;
1065 1069
1066 1070 if ((na = __rpcb_findaddr_timed(program, version,
1067 1071 (struct netconfig *)nconf, (char *)host, NULL, NULL)) == NULL)
1068 1072 return (FALSE);
1069 1073
1070 1074 if (na->len > address->maxlen) {
1071 1075 /* Too long address */
1072 1076 netdir_free((char *)na, ND_ADDR);
1073 1077 rpc_createerr.cf_stat = RPC_FAILED;
1074 1078 return (FALSE);
1075 1079 }
1076 1080 (void) memcpy(address->buf, na->buf, (int)na->len);
1077 1081 address->len = na->len;
1078 1082 netdir_free((char *)na, ND_ADDR);
1079 1083 return (TRUE);
1080 1084 }
1081 1085
1082 1086 /*
1083 1087 * Get a copy of the current maps.
1084 1088 * Calls the rpcbind service remotely to get the maps.
1085 1089 *
1086 1090 * It returns only a list of the services
1087 1091 * It returns NULL on failure.
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1088 1092 */
1089 1093 rpcblist *
1090 1094 rpcb_getmaps(const struct netconfig *nconf, const char *host)
1091 1095 {
1092 1096 rpcblist_ptr head = NULL;
1093 1097 CLIENT *client;
1094 1098 enum clnt_stat clnt_st;
1095 1099 int vers = 0;
1096 1100
1097 1101 client = getclnthandle((char *)host,
1098 - (struct netconfig *)nconf, NULL);
1102 + (struct netconfig *)nconf, NULL);
1099 1103 if (client == NULL)
1100 1104 return (NULL);
1101 1105
1102 1106 clnt_st = CLNT_CALL(client, RPCBPROC_DUMP,
1103 - (xdrproc_t)xdr_void, NULL,
1104 - (xdrproc_t)xdr_rpcblist_ptr,
1105 - (char *)&head, tottimeout);
1107 + (xdrproc_t)xdr_void, NULL,
1108 + (xdrproc_t)xdr_rpcblist_ptr,
1109 + (char *)&head, tottimeout);
1106 1110 if (clnt_st == RPC_SUCCESS)
1107 1111 goto done;
1108 1112
1109 1113 if ((clnt_st != RPC_PROGVERSMISMATCH) &&
1110 - (clnt_st != RPC_PROGUNAVAIL)) {
1114 + (clnt_st != RPC_PROGUNAVAIL)) {
1111 1115 rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1112 1116 clnt_geterr(client, &rpc_createerr.cf_error);
1113 1117 goto done;
1114 1118 }
1115 1119
1116 1120 /* fall back to earlier version */
1117 1121 CLNT_CONTROL(client, CLGET_VERS, (char *)&vers);
1118 1122 if (vers == RPCBVERS4) {
1119 1123 vers = RPCBVERS;
1120 1124 CLNT_CONTROL(client, CLSET_VERS, (char *)&vers);
1121 1125 if (CLNT_CALL(client, RPCBPROC_DUMP,
1122 - (xdrproc_t)xdr_void,
1123 - NULL, (xdrproc_t)xdr_rpcblist_ptr,
1124 - (char *)&head, tottimeout) == RPC_SUCCESS)
1126 + (xdrproc_t)xdr_void,
1127 + NULL, (xdrproc_t)xdr_rpcblist_ptr,
1128 + (char *)&head, tottimeout) == RPC_SUCCESS)
1125 1129 goto done;
1126 1130 }
1127 1131 rpc_createerr.cf_stat = RPC_RPCBFAILURE;
1128 1132 clnt_geterr(client, &rpc_createerr.cf_error);
1129 1133
1130 1134 done:
1131 1135 CLNT_DESTROY(client);
1132 1136 return (head);
1133 1137 }
1134 1138
1135 1139 /*
1136 1140 * rpcbinder remote-call-service interface.
1137 1141 * This routine is used to call the rpcbind remote call service
1138 1142 * which will look up a service program in the address maps, and then
1139 1143 * remotely call that routine with the given parameters. This allows
1140 1144 * programs to do a lookup and call in one step.
1141 1145 */
1142 1146 enum clnt_stat
1143 1147 rpcb_rmtcall(const struct netconfig *nconf, const char *host,
1144 1148 const rpcprog_t prog, const rpcvers_t vers, const rpcproc_t proc,
1145 1149 const xdrproc_t xdrargs, const caddr_t argsp, const xdrproc_t xdrres,
1146 1150 const caddr_t resp, const struct timeval tout, struct netbuf *addr_ptr)
1147 1151 {
1148 1152 CLIENT *client;
1149 1153 enum clnt_stat stat;
1150 1154 struct r_rpcb_rmtcallargs a;
1151 1155 struct r_rpcb_rmtcallres r;
1152 1156 int rpcb_vers;
1153 1157
1154 1158 client = getclnthandle((char *)host, (struct netconfig *)nconf, NULL);
1155 1159 if (client == NULL)
1156 1160 return (RPC_FAILED);
1157 1161 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rmttimeout);
1158 1162 a.prog = prog;
1159 1163 a.vers = vers;
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1160 1164 a.proc = proc;
1161 1165 a.args.args_val = argsp;
1162 1166 a.xdr_args = xdrargs;
1163 1167 r.addr = NULL;
1164 1168 r.results.results_val = resp;
1165 1169 r.xdr_res = xdrres;
1166 1170
1167 1171 for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) {
1168 1172 CLNT_CONTROL(client, CLSET_VERS, (char *)&rpcb_vers);
1169 1173 stat = CLNT_CALL(client, RPCBPROC_CALLIT,
1170 - (xdrproc_t)xdr_rpcb_rmtcallargs, (char *)&a,
1171 - (xdrproc_t)xdr_rpcb_rmtcallres, (char *)&r, tout);
1174 + (xdrproc_t)xdr_rpcb_rmtcallargs, (char *)&a,
1175 + (xdrproc_t)xdr_rpcb_rmtcallres, (char *)&r, tout);
1172 1176 if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) {
1173 1177 struct netbuf *na;
1174 1178
1175 1179 na = uaddr2taddr((struct netconfig *)nconf, r.addr);
1176 1180 if (!na) {
1177 1181 stat = RPC_N2AXLATEFAILURE;
1178 1182 ((struct netbuf *)addr_ptr)->len = 0;
1179 1183 goto error;
1180 1184 }
1181 1185 if (na->len > addr_ptr->maxlen) {
1182 1186 /* Too long address */
1183 1187 stat = RPC_FAILED; /* XXX A better error no */
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1184 1188 netdir_free((char *)na, ND_ADDR);
1185 1189 ((struct netbuf *)addr_ptr)->len = 0;
1186 1190 goto error;
1187 1191 }
1188 1192 (void) memcpy(addr_ptr->buf, na->buf, (int)na->len);
1189 1193 ((struct netbuf *)addr_ptr)->len = na->len;
1190 1194 netdir_free((char *)na, ND_ADDR);
1191 1195 break;
1192 1196 }
1193 1197 if ((stat != RPC_PROGVERSMISMATCH) &&
1194 - (stat != RPC_PROGUNAVAIL))
1198 + (stat != RPC_PROGUNAVAIL))
1195 1199 goto error;
1196 1200 }
1197 1201 error:
1198 1202 CLNT_DESTROY(client);
1199 1203 if (r.addr)
1200 1204 xdr_free((xdrproc_t)xdr_wrapstring, (char *)&r.addr);
1201 1205 return (stat);
1202 1206 }
1203 1207
1204 1208 /*
1205 1209 * Gets the time on the remote host.
1206 1210 * Returns 1 if succeeds else 0.
1207 1211 */
1208 1212 bool_t
1209 1213 rpcb_gettime(const char *host, time_t *timep)
1210 1214 {
1211 1215 CLIENT *client = NULL;
1212 1216 void *handle;
1213 1217 struct netconfig *nconf;
1214 1218 int vers;
1215 1219 enum clnt_stat st;
1216 1220
1217 1221 if ((host == NULL) || (host[0] == NULL)) {
1218 1222 (void) time(timep);
1219 1223 return (TRUE);
1220 1224 }
1221 1225
1222 1226 if ((handle = __rpc_setconf("netpath")) == NULL) {
1223 1227 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1224 1228 return (FALSE);
1225 1229 }
1226 1230 rpc_createerr.cf_stat = RPC_SUCCESS;
1227 1231 while (client == NULL) {
1228 1232 if ((nconf = __rpc_getconf(handle)) == NULL) {
1229 1233 if (rpc_createerr.cf_stat == RPC_SUCCESS)
1230 1234 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1231 1235 break;
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1232 1236 }
1233 1237 client = getclnthandle((char *)host, nconf, NULL);
1234 1238 if (client)
1235 1239 break;
1236 1240 }
1237 1241 __rpc_endconf(handle);
1238 1242 if (client == NULL)
1239 1243 return (FALSE);
1240 1244
1241 1245 st = CLNT_CALL(client, RPCBPROC_GETTIME,
1242 - (xdrproc_t)xdr_void, NULL,
1243 - (xdrproc_t)xdr_time_t, (char *)timep, tottimeout);
1246 + (xdrproc_t)xdr_void, NULL,
1247 + (xdrproc_t)xdr_time_t, (char *)timep, tottimeout);
1244 1248
1245 1249 if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) {
1246 1250 CLNT_CONTROL(client, CLGET_VERS, (char *)&vers);
1247 1251 if (vers == RPCBVERS4) {
1248 1252 /* fall back to earlier version */
1249 1253 vers = RPCBVERS;
1250 1254 CLNT_CONTROL(client, CLSET_VERS, (char *)&vers);
1251 1255 st = CLNT_CALL(client, RPCBPROC_GETTIME,
1252 - (xdrproc_t)xdr_void, NULL,
1253 - (xdrproc_t)xdr_time_t, (char *)timep,
1254 - tottimeout);
1256 + (xdrproc_t)xdr_void, NULL,
1257 + (xdrproc_t)xdr_time_t, (char *)timep,
1258 + tottimeout);
1255 1259 }
1256 1260 }
1257 1261 CLNT_DESTROY(client);
1258 1262 return (st == RPC_SUCCESS? TRUE : FALSE);
1259 1263 }
1260 1264
1261 1265 /*
1262 1266 * Converts taddr to universal address. This routine should never
1263 1267 * really be called because local n2a libraries are always provided.
1264 1268 */
1265 1269 char *
1266 1270 rpcb_taddr2uaddr(struct netconfig *nconf, struct netbuf *taddr)
1267 1271 {
1268 1272 CLIENT *client;
1269 1273 char *uaddr = NULL;
1270 1274
1271 1275 /* parameter checking */
1272 1276 if (nconf == NULL) {
1273 1277 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1274 1278 return (NULL);
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1275 1279 }
1276 1280 if (taddr == NULL) {
1277 1281 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
1278 1282 return (NULL);
1279 1283 }
1280 1284 client = local_rpcb();
1281 1285 if (!client)
1282 1286 return (NULL);
1283 1287
1284 1288 CLNT_CALL(client, RPCBPROC_TADDR2UADDR, (xdrproc_t)xdr_netbuf,
1285 - (char *)taddr, (xdrproc_t)xdr_wrapstring, (char *)&uaddr,
1286 - tottimeout);
1289 + (char *)taddr, (xdrproc_t)xdr_wrapstring, (char *)&uaddr,
1290 + tottimeout);
1287 1291 CLNT_DESTROY(client);
1288 1292 return (uaddr);
1289 1293 }
1290 1294
1291 1295 /*
1292 1296 * Converts universal address to netbuf. This routine should never
1293 1297 * really be called because local n2a libraries are always provided.
1294 1298 */
1295 1299 struct netbuf *
1296 1300 rpcb_uaddr2taddr(struct netconfig *nconf, char *uaddr)
1297 1301 {
1298 1302 CLIENT *client;
1299 1303 struct netbuf *taddr;
1300 1304
1301 1305 /* parameter checking */
1302 1306 if (nconf == NULL) {
1303 1307 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
1304 1308 return (NULL);
1305 1309 }
1306 1310 if (uaddr == NULL) {
1307 1311 rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
1308 1312 return (NULL);
1309 1313 }
1310 1314 client = local_rpcb();
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1311 1315 if (!client)
1312 1316 return (NULL);
1313 1317
1314 1318 taddr = calloc(1, sizeof (struct netbuf));
1315 1319 if (taddr == NULL) {
1316 1320 CLNT_DESTROY(client);
1317 1321 return (NULL);
1318 1322 }
1319 1323
1320 1324 if (CLNT_CALL(client, RPCBPROC_UADDR2TADDR, (xdrproc_t)xdr_wrapstring,
1321 - (char *)&uaddr, (xdrproc_t)xdr_netbuf, (char *)taddr,
1322 - tottimeout) != RPC_SUCCESS) {
1325 + (char *)&uaddr, (xdrproc_t)xdr_netbuf, (char *)taddr,
1326 + tottimeout) != RPC_SUCCESS) {
1323 1327 free(taddr);
1324 1328 taddr = NULL;
1325 1329 }
1326 1330 CLNT_DESTROY(client);
1327 1331 return (taddr);
1328 1332 }
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