?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
yp_maplist is one of those undocumented functions, resurrect and prototype it.
[dragonfly.git] / lib / libc / yp / yplib.c
blob69b22925587930a36a51aa68489713e13f91108b
1 /*
2 * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
3 * Copyright (c) 1998 Bill Paul <wpaul@ctr.columbia.edu>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote
15 * products derived from this software without specific prior written
16 * permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: src/lib/libc/yp/yplib.c,v 1.34.2.2 2002/02/15 00:46:53 des Exp $
31 * $DragonFly: src/lib/libc/yp/yplib.c,v 1.7 2005/04/26 06:30:52 y0netan1 Exp $
32 */
33
34 #include "namespace.h"
35 #include <sys/param.h>
36 #include <sys/types.h>
37 #include <sys/socket.h>
38 #include <sys/file.h>
39 #include <sys/uio.h>
40 #include <errno.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <stdlib.h>
44 #include <unistd.h>
45 #include <rpc/rpc.h>
46 #include <rpc/xdr.h>
47 #include <rpcsvc/yp.h>
48 #include "un-namespace.h"
49
50 bool_t xdr_ypresp_all_seq(XDR *, u_long *);
51 int _yp_check(char **);
52
53 int (*ypresp_allfn)(unsigned long, char *, int, char *, int, void *);
54
55 /*
56 * We have to define these here due to clashes between yp_prot.h and
57 * yp.h.
58 */
59
60 #define YPMATCHCACHE
61
62 #ifdef YPMATCHCACHE
63 struct ypmatch_ent {
64 char *ypc_map;
65 keydat ypc_key;
66 valdat ypc_val;
67 time_t ypc_expire_t;
68 struct ypmatch_ent *ypc_next;
69 };
70 #define YPLIB_MAXCACHE 5 /* At most 5 entries */
71 #define YPLIB_EXPIRE 5 /* Expire after 5 seconds */
72 #endif
73
74 struct dom_binding {
75 struct dom_binding *dom_pnext;
76 char dom_domain[YPMAXDOMAIN + 1];
77 struct sockaddr_in dom_server_addr;
78 u_short dom_server_port;
79 int dom_socket;
80 CLIENT *dom_client;
81 u_short dom_local_port; /* now I finally know what this is for. */
82 long dom_vers;
83 #ifdef YPMATCHCACHE
84 struct ypmatch_ent *cache;
85 int ypmatch_cachecnt;
86 #endif
87 };
88
89 #include <rpcsvc/yp.h>
90 #include <rpcsvc/ypclnt.h>
91
92 #ifndef BINDINGDIR
93 #define BINDINGDIR "/var/yp/binding"
94 #endif
95 #define MAX_RETRIES 20
96
97 void *ypresp_data;
98
99 static void _yp_unbind(struct dom_binding *);
100 struct dom_binding *_ypbindlist;
101 static char _yp_domain[MAXHOSTNAMELEN];
102 int _yplib_timeout = 10;
103
104 #ifdef YPMATCHCACHE
105 static void
106 ypmatch_cache_delete(struct dom_binding *ypdb, struct ypmatch_ent *prev,
107 struct ypmatch_ent *cur)
108 {
109 if (prev == NULL)
110 ypdb->cache = cur->ypc_next;
111 else
112 prev->ypc_next = cur->ypc_next;
113
114 free(cur->ypc_map);
115 free(cur->ypc_key.keydat_val);
116 free(cur->ypc_val.valdat_val);
117 free(cur);
118
119 ypdb->ypmatch_cachecnt--;
120
121 return;
122 }
123
124 static void
125 ypmatch_cache_flush(struct dom_binding *ypdb)
126 {
127 struct ypmatch_ent *n, *c = ypdb->cache;
128
129 while (c != NULL) {
130 n = c->ypc_next;
131 ypmatch_cache_delete(ypdb, NULL, c);
132 c = n;
133 }
134
135 return;
136 }
137
138 static void
139 ypmatch_cache_expire(struct dom_binding *ypdb)
140 {
141 struct ypmatch_ent *c = ypdb->cache;
142 struct ypmatch_ent *n, *p = NULL;
143 time_t t;
144
145 time(&t);
146
147 while (c != NULL) {
148 if (t >= c->ypc_expire_t) {
149 n = c->ypc_next;
150 ypmatch_cache_delete(ypdb, p, c);
151 c = n;
152 } else {
153 p = c;
154 c = c->ypc_next;
155 }
156 }
157
158 return;
159 }
160
161 static void
162 ypmatch_cache_insert(struct dom_binding *ypdb, char *map, keydat *key,
163 valdat *val)
164 {
165 struct ypmatch_ent *new;
166
167 /* Do an expire run to maybe open up a slot. */
168 if (ypdb->ypmatch_cachecnt)
169 ypmatch_cache_expire(ypdb);
170
171 /*
172 * If there are no slots free, then force an expire of
173 * the least recently used entry.
174 */
175 if (ypdb->ypmatch_cachecnt >= YPLIB_MAXCACHE) {
176 struct ypmatch_ent *o = NULL, *c = ypdb->cache;
177 time_t oldest = 0;
178
179 oldest = ~oldest;
180
181 while (c != NULL) {
182 if (c->ypc_expire_t < oldest) {
183 oldest = c->ypc_expire_t;
184 o = c;
185 }
186 c = c->ypc_next;
187 }
188
189 if (o == NULL)
190 return;
191 o->ypc_expire_t = 0;
192 ypmatch_cache_expire(ypdb);
193 }
194
195 new = malloc(sizeof(struct ypmatch_ent));
196 if (new == NULL)
197 return;
198
199 new->ypc_map = strdup(map);
200 if (new->ypc_map == NULL) {
201 free(new);
202 return;
203 }
204 new->ypc_key.keydat_val = malloc(key->keydat_len);
205 if (new->ypc_key.keydat_val == NULL) {
206 free(new->ypc_map);
207 free(new);
208 return;
209 }
210 new->ypc_val.valdat_val = malloc(val->valdat_len);
211 if (new->ypc_val.valdat_val == NULL) {
212 free(new->ypc_val.valdat_val);
213 free(new->ypc_map);
214 free(new);
215 return;
216 }
217
218 new->ypc_expire_t = time(NULL) + YPLIB_EXPIRE;
219 new->ypc_key.keydat_len = key->keydat_len;
220 new->ypc_val.valdat_len = val->valdat_len;
221 bcopy(key->keydat_val, new->ypc_key.keydat_val, key->keydat_len);
222 bcopy(val->valdat_val, new->ypc_val.valdat_val, val->valdat_len);
223
224 new->ypc_next = ypdb->cache;
225 ypdb->cache = new;
226
227 ypdb->ypmatch_cachecnt++;
228
229 return;
230 }
231
232 static bool_t
233 ypmatch_cache_lookup(struct dom_binding *ypdb, char *map, keydat *key,
234 valdat *val)
235 {
236 struct ypmatch_ent *c = ypdb->cache;
237
238 ypmatch_cache_expire(ypdb);
239
240 for (c = ypdb->cache; c != NULL; c = c->ypc_next) {
241 if (strcmp(map, c->ypc_map))
242 continue;
243 if (key->keydat_len != c->ypc_key.keydat_len)
244 continue;
245 if (bcmp(key->keydat_val, c->ypc_key.keydat_val,
246 key->keydat_len))
247 continue;
248 }
249
250 if (c == NULL)
251 return(FALSE);
252
253 val->valdat_len = c->ypc_val.valdat_len;
254 val->valdat_val = c->ypc_val.valdat_val;
255
256 return(TRUE);
257 }
258 #endif
259
260 char *
261 ypbinderr_string(int incode)
262 {
263 const char *errstr;
264 static char err[80];
265 switch (incode) {
266 case 0:
267 errstr = "Success";
268 break;
269 case YPBIND_ERR_ERR:
270 errstr = "Internal ypbind error";
271 break;
272 case YPBIND_ERR_NOSERV:
273 errstr = "Domain not bound";
274 break;
275 case YPBIND_ERR_RESC:
276 errstr = "System resource allocation failure";
277 break;
278 default:
279 errstr = NULL;
280 break;
281 }
282 if (errstr != NULL)
283 strlcpy(err, errstr, sizeof(err));
284 else
285 snprintf(err, sizeof(err), "Unknown ypbind error: #%d\n", incode);
286 return (err);
287 }
288
289 int
290 _yp_dobind(const char *dom, struct dom_binding **ypdb)
291 {
292 static pid_t pid = -1;
293 char path[MAXPATHLEN];
294 struct dom_binding *ysd, *ysd2;
295 struct ypbind_resp ypbr;
296 struct timeval tv;
297 struct sockaddr_in clnt_sin;
298 int clnt_sock, fd;
299 pid_t gpid;
300 CLIENT *client;
301 int new = 0;
302 ssize_t r;
303 int retries = 0;
304 struct sockaddr_in check;
305 int checklen = sizeof(struct sockaddr_in);
306
307 /* Not allowed; bad doggie. Bad. */
308 if (strchr(dom, '/') != NULL)
309 return(YPERR_BADARGS);
310
311 gpid = getpid();
312 if (!(pid == -1 || pid == gpid)) {
313 ysd = _ypbindlist;
314 while (ysd) {
315 if (ysd->dom_client != NULL)
316 _yp_unbind(ysd);
317 ysd2 = ysd->dom_pnext;
318 free(ysd);
319 ysd = ysd2;
320 }
321 _ypbindlist = NULL;
322 }
323 pid = gpid;
324
325 if (ypdb != NULL)
326 *ypdb = NULL;
327
328 if (dom == NULL || strlen(dom) == 0)
329 return (YPERR_BADARGS);
330
331 for (ysd = _ypbindlist; ysd; ysd = ysd->dom_pnext)
332 if (strcmp(dom, ysd->dom_domain) == 0)
333 break;
334
335
336 if (ysd == NULL) {
337 ysd = (struct dom_binding *)malloc(sizeof *ysd);
338 bzero((char *)ysd, sizeof *ysd);
339 ysd->dom_socket = -1;
340 ysd->dom_vers = 0;
341 new = 1;
342 } else {
343 /* Check the socket -- may have been hosed by the caller. */
344 if (_getsockname(ysd->dom_socket, (struct sockaddr *)&check,
345 &checklen) == -1 || check.sin_family != AF_INET ||
346 check.sin_port != ysd->dom_local_port) {
347 /* Socket became bogus somehow... need to rebind. */
348 int save, sock;
349
350 sock = ysd->dom_socket;
351 save = _dup(ysd->dom_socket);
352 if (ysd->dom_client != NULL)
353 clnt_destroy(ysd->dom_client);
354 ysd->dom_vers = 0;
355 ysd->dom_client = NULL;
356 sock = _dup2(save, sock);
357 _close(save);
358 }
359 }
360
361 again:
362 retries++;
363 if (retries > MAX_RETRIES) {
364 if (new)
365 free(ysd);
366 return(YPERR_YPBIND);
367 }
368 #ifdef BINDINGDIR
369 if (ysd->dom_vers == 0) {
370 /*
371 * We're trying to make a new binding: zorch the
372 * existing handle now (if any).
373 */
374 if (ysd->dom_client != NULL) {
375 clnt_destroy(ysd->dom_client);
376 ysd->dom_client = NULL;
377 ysd->dom_socket = -1;
378 }
379 snprintf(path, sizeof(path), "%s/%s.%d", BINDINGDIR, dom, 2);
380 if ((fd = _open(path, O_RDONLY)) == -1) {
381 /* no binding file, YP is dead. */
382 /* Try to bring it back to life. */
383 _close(fd);
384 goto skipit;
385 }
386 if (_flock(fd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) {
387 struct iovec iov[2];
388 struct ypbind_resp ybr;
389 u_short ypb_port;
390
391 iov[0].iov_base = (caddr_t)&ypb_port;
392 iov[0].iov_len = sizeof ypb_port;
393 iov[1].iov_base = (caddr_t)&ybr;
394 iov[1].iov_len = sizeof ybr;
395
396 r = _readv(fd, iov, 2);
397 if (r != (ssize_t)(iov[0].iov_len + iov[1].iov_len)) {
398 _close(fd);
399 ysd->dom_vers = -1;
400 goto again;
401 }
402
403 bzero(&ysd->dom_server_addr, sizeof ysd->dom_server_addr);
404 ysd->dom_server_addr.sin_family = AF_INET;
405 ysd->dom_server_addr.sin_len = sizeof(struct sockaddr_in);
406 ysd->dom_server_addr.sin_addr.s_addr =
407 *(u_long *)&ybr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr;
408 ysd->dom_server_addr.sin_port =
409 *(u_short *)&ybr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
410
411 ysd->dom_server_port = ysd->dom_server_addr.sin_port;
412 _close(fd);
413 goto gotit;
414 } else {
415 /* no lock on binding file, YP is dead. */
416 /* Try to bring it back to life. */
417 _close(fd);
418 goto skipit;
419 }
420 }
421 skipit:
422 #endif
423 if (ysd->dom_vers == -1 || ysd->dom_vers == 0) {
424 /*
425 * We're trying to make a new binding: zorch the
426 * existing handle now (if any).
427 */
428 if (ysd->dom_client != NULL) {
429 clnt_destroy(ysd->dom_client);
430 ysd->dom_client = NULL;
431 ysd->dom_socket = -1;
432 }
433 bzero((char *)&clnt_sin, sizeof clnt_sin);
434 clnt_sin.sin_family = AF_INET;
435 clnt_sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
436
437 clnt_sock = RPC_ANYSOCK;
438 client = clnttcp_create(&clnt_sin, YPBINDPROG, YPBINDVERS, &clnt_sock,
439 0, 0);
440 if (client == NULL) {
441 /*
442 * These conditions indicate ypbind just isn't
443 * alive -- we probably don't want to shoot our
444 * mouth off in this case; instead generate error
445 * messages only for really exotic problems.
446 */
447 if (rpc_createerr.cf_stat != RPC_PROGNOTREGISTERED &&
448 (rpc_createerr.cf_stat != RPC_SYSTEMERROR &&
449 rpc_createerr.cf_error.re_errno == ECONNREFUSED))
450 clnt_pcreateerror("clnttcp_create");
451 if (new)
452 free(ysd);
453 return (YPERR_YPBIND);
454 }
455
456 /*
457 * Check the port number -- should be < IPPORT_RESERVED.
458 * If not, it's possible someone has registered a bogus
459 * ypbind with the portmapper and is trying to trick us.
460 */
461 if (ntohs(clnt_sin.sin_port) >= IPPORT_RESERVED) {
462 if (client != NULL)
463 clnt_destroy(client);
464 if (new)
465 free(ysd);
466 return(YPERR_YPBIND);
467 }
468 tv.tv_sec = _yplib_timeout/2;
469 tv.tv_usec = 0;
470 r = clnt_call(client, YPBINDPROC_DOMAIN,
471 xdr_domainname, (char *)&dom, xdr_ypbind_resp, &ypbr, tv);
472 if (r != RPC_SUCCESS) {
473 clnt_destroy(client);
474 ysd->dom_vers = -1;
475 if (r == RPC_PROGUNAVAIL || r == RPC_PROCUNAVAIL) {
476 if (new)
477 free(ysd);
478 return(YPERR_YPBIND);
479 }
480 fprintf(stderr,
481 "YP: server for domain %s not responding, retrying\n", dom);
482 goto again;
483 } else {
484 if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
485 struct timespec time_to_sleep, time_remaining;
486
487 clnt_destroy(client);
488 ysd->dom_vers = -1;
489
490 time_to_sleep.tv_sec = _yplib_timeout/2;
491 time_to_sleep.tv_nsec = 0;
492 _nanosleep(&time_to_sleep,
493 &time_remaining);
494 goto again;
495 }
496 }
497 clnt_destroy(client);
498
499 bzero((char *)&ysd->dom_server_addr, sizeof ysd->dom_server_addr);
500 ysd->dom_server_addr.sin_family = AF_INET;
501 ysd->dom_server_addr.sin_port =
502 *(u_short *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
503 ysd->dom_server_addr.sin_addr.s_addr =
504 *(u_long *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr;
505
506 /*
507 * We could do a reserved port check here too, but this
508 * could pose compatibility problems. The local ypbind is
509 * supposed to decide whether or not to trust yp servers
510 * on insecure ports. For now, we trust its judgement.
511 */
512 ysd->dom_server_port =
513 *(u_short *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
514 gotit:
515 ysd->dom_vers = YPVERS;
516 strlcpy(ysd->dom_domain, dom, sizeof(ysd->dom_domain));
517 }
518
519 /* Don't rebuild the connection to the server unless we have to. */
520 if (ysd->dom_client == NULL) {
521 tv.tv_sec = _yplib_timeout/2;
522 tv.tv_usec = 0;
523 ysd->dom_socket = RPC_ANYSOCK;
524 ysd->dom_client = clntudp_bufcreate(&ysd->dom_server_addr,
525 YPPROG, YPVERS, tv, &ysd->dom_socket, 1280, 2304);
526 if (ysd->dom_client == NULL) {
527 clnt_pcreateerror("clntudp_create");
528 ysd->dom_vers = -1;
529 goto again;
530 }
531 if (_fcntl(ysd->dom_socket, F_SETFD, 1) == -1)
532 perror("fcntl: F_SETFD");
533 /*
534 * We want a port number associated with this socket
535 * so that we can check its authenticity later.
536 */
537 checklen = sizeof(struct sockaddr_in);
538 bzero((char *)&check, checklen);
539 _bind(ysd->dom_socket, (struct sockaddr *)&check, checklen);
540 check.sin_family = AF_INET;
541 if (!_getsockname(ysd->dom_socket,
542 (struct sockaddr *)&check, &checklen)) {
543 ysd->dom_local_port = check.sin_port;
544 } else {
545 clnt_destroy(ysd->dom_client);
546 if (new)
547 free(ysd);
548 return(YPERR_YPBIND);
549 }
550 }
551
552 if (new) {
553 ysd->dom_pnext = _ypbindlist;
554 _ypbindlist = ysd;
555 }
556
557 if (ypdb != NULL)
558 *ypdb = ysd;
559 return (0);
560 }
561
562 static void
563 _yp_unbind(struct dom_binding *ypb)
564 {
565 struct sockaddr_in check;
566 int checklen = sizeof(struct sockaddr_in);
567
568 if (ypb->dom_client != NULL) {
569 /* Check the socket -- may have been hosed by the caller. */
570 if (_getsockname(ypb->dom_socket, (struct sockaddr *)&check,
571 &checklen) == -1 || check.sin_family != AF_INET ||
572 check.sin_port != ypb->dom_local_port) {
573 int save, sock;
574
575 sock = ypb->dom_socket;
576 save = _dup(ypb->dom_socket);
577 clnt_destroy(ypb->dom_client);
578 sock = _dup2(save, sock);
579 _close(save);
580 } else
581 clnt_destroy(ypb->dom_client);
582 }
583
584 ypb->dom_client = NULL;
585 ypb->dom_socket = -1;
586 ypb->dom_vers = -1;
587 #ifdef YPMATCHCACHE
588 ypmatch_cache_flush(ypb);
589 #endif
590 }
591
592 int
593 yp_bind(char *dom)
594 {
595 return (_yp_dobind(dom, NULL));
596 }
597
598 void
599 yp_unbind(char *dom)
600 {
601 struct dom_binding *ypb, *ypbp;
602
603 ypbp = NULL;
604 for (ypb = _ypbindlist; ypb; ypb = ypb->dom_pnext) {
605 if (strcmp(dom, ypb->dom_domain) == 0) {
606 _yp_unbind(ypb);
607 if (ypbp)
608 ypbp->dom_pnext = ypb->dom_pnext;
609 else
610 _ypbindlist = ypb->dom_pnext;
611 free(ypb);
612 return;
613 }
614 ypbp = ypb;
615 }
616 return;
617 }
618
619 int
620 yp_match(const char *indomain, const char *inmap, const char *inkey, int inkeylen,
621 char **outval, int *outvallen)
622 {
623 struct dom_binding *ysd;
624 struct ypresp_val yprv;
625 struct timeval tv;
626 struct ypreq_key yprk;
627 int r;
628
629 *outval = NULL;
630 *outvallen = 0;
631
632 /* Sanity check */
633
634 if (inkey == NULL || !strlen(inkey) || inkeylen <= 0 ||
635 inmap == NULL || !strlen(inmap) ||
636 indomain == NULL || !strlen(indomain))
637 return (YPERR_BADARGS);
638
639 if (_yp_dobind(indomain, &ysd) != 0)
640 return(YPERR_DOMAIN);
641
642 yprk.domain = indomain;
643 yprk.map = inmap;
644 yprk.key.keydat_val = (char *)inkey;
645 yprk.key.keydat_len = inkeylen;
646
647 #ifdef YPMATCHCACHE
648 if (ypmatch_cache_lookup(ysd, yprk.map, &yprk.key, &yprv.val) == TRUE) {
649 /*
650 if (!strcmp(_yp_domain, indomain) && ypmatch_find(inmap, inkey,
651 inkeylen, &yprv.val.valdat_val, &yprv.val.valdat_len)) {
652 */
653 *outvallen = yprv.val.valdat_len;
654 *outval = (char *)malloc(*outvallen+1);
655 bcopy(yprv.val.valdat_val, *outval, *outvallen);
656 (*outval)[*outvallen] = '\0';
657 return (0);
658 }
659 #endif
660
661 again:
662 if (_yp_dobind(indomain, &ysd) != 0)
663 return (YPERR_DOMAIN);
664
665 tv.tv_sec = _yplib_timeout;
666 tv.tv_usec = 0;
667
668 bzero((char *)&yprv, sizeof yprv);
669
670 r = clnt_call(ysd->dom_client, YPPROC_MATCH,
671 xdr_ypreq_key, &yprk, xdr_ypresp_val, &yprv, tv);
672 if (r != RPC_SUCCESS) {
673 clnt_perror(ysd->dom_client, "yp_match: clnt_call");
674 _yp_unbind(ysd);
675 goto again;
676 }
677
678 if (!(r = ypprot_err(yprv.stat))) {
679 *outvallen = yprv.val.valdat_len;
680 *outval = (char *)malloc(*outvallen+1);
681 bcopy(yprv.val.valdat_val, *outval, *outvallen);
682 (*outval)[*outvallen] = '\0';
683 #ifdef YPMATCHCACHE
684 ypmatch_cache_insert(ysd, yprk.map, &yprk.key, &yprv.val);
685 #endif
686 }
687
688 xdr_free(xdr_ypresp_val, (char *)&yprv);
689 return (r);
690 }
691
692 int
693 yp_get_default_domain(char **domp)
694 {
695 *domp = NULL;
696 if (_yp_domain[0] == '\0')
697 if (getdomainname(_yp_domain, sizeof _yp_domain))
698 return (YPERR_NODOM);
699 *domp = _yp_domain;
700 return (0);
701 }
702
703 int
704 yp_first(char *indomain, char *inmap, char **outkey, int *outkeylen,
705 char **outval, int *outvallen)
706 {
707 struct ypresp_key_val yprkv;
708 struct ypreq_nokey yprnk;
709 struct dom_binding *ysd;
710 struct timeval tv;
711 int r;
712
713 /* Sanity check */
714
715 if (indomain == NULL || !strlen(indomain) ||
716 inmap == NULL || !strlen(inmap))
717 return (YPERR_BADARGS);
718
719 *outkey = *outval = NULL;
720 *outkeylen = *outvallen = 0;
721
722 again:
723 if (_yp_dobind(indomain, &ysd) != 0)
724 return (YPERR_DOMAIN);
725
726 tv.tv_sec = _yplib_timeout;
727 tv.tv_usec = 0;
728
729 yprnk.domain = indomain;
730 yprnk.map = inmap;
731 bzero((char *)&yprkv, sizeof yprkv);
732
733 r = clnt_call(ysd->dom_client, YPPROC_FIRST,
734 xdr_ypreq_nokey, &yprnk, xdr_ypresp_key_val, &yprkv, tv);
735 if (r != RPC_SUCCESS) {
736 clnt_perror(ysd->dom_client, "yp_first: clnt_call");
737 _yp_unbind(ysd);
738 goto again;
739 }
740 if (!(r = ypprot_err(yprkv.stat))) {
741 *outkeylen = yprkv.key.keydat_len;
742 *outkey = (char *)malloc(*outkeylen+1);
743 bcopy(yprkv.key.keydat_val, *outkey, *outkeylen);
744 (*outkey)[*outkeylen] = '\0';
745 *outvallen = yprkv.val.valdat_len;
746 *outval = (char *)malloc(*outvallen+1);
747 bcopy(yprkv.val.valdat_val, *outval, *outvallen);
748 (*outval)[*outvallen] = '\0';
749 }
750
751 xdr_free(xdr_ypresp_key_val, (char *)&yprkv);
752 return (r);
753 }
754
755 int
756 yp_next(char *indomain, char *inmap, char *inkey, int inkeylen,
757 char **outkey, int *outkeylen, char **outval, int *outvallen)
758 {
759 struct ypresp_key_val yprkv;
760 struct ypreq_key yprk;
761 struct dom_binding *ysd;
762 struct timeval tv;
763 int r;
764
765 /* Sanity check */
766
767 if (inkey == NULL || !strlen(inkey) || inkeylen <= 0 ||
768 inmap == NULL || !strlen(inmap) ||
769 indomain == NULL || !strlen(indomain))
770 return (YPERR_BADARGS);
771
772 *outkey = *outval = NULL;
773 *outkeylen = *outvallen = 0;
774
775 again:
776 if (_yp_dobind(indomain, &ysd) != 0)
777 return (YPERR_DOMAIN);
778
779 tv.tv_sec = _yplib_timeout;
780 tv.tv_usec = 0;
781
782 yprk.domain = indomain;
783 yprk.map = inmap;
784 yprk.key.keydat_val = inkey;
785 yprk.key.keydat_len = inkeylen;
786 bzero((char *)&yprkv, sizeof yprkv);
787
788 r = clnt_call(ysd->dom_client, YPPROC_NEXT,
789 xdr_ypreq_key, &yprk, xdr_ypresp_key_val, &yprkv, tv);
790 if (r != RPC_SUCCESS) {
791 clnt_perror(ysd->dom_client, "yp_next: clnt_call");
792 _yp_unbind(ysd);
793 goto again;
794 }
795 if (!(r = ypprot_err(yprkv.stat))) {
796 *outkeylen = yprkv.key.keydat_len;
797 *outkey = (char *)malloc(*outkeylen+1);
798 bcopy(yprkv.key.keydat_val, *outkey, *outkeylen);
799 (*outkey)[*outkeylen] = '\0';
800 *outvallen = yprkv.val.valdat_len;
801 *outval = (char *)malloc(*outvallen+1);
802 bcopy(yprkv.val.valdat_val, *outval, *outvallen);
803 (*outval)[*outvallen] = '\0';
804 }
805
806 xdr_free(xdr_ypresp_key_val, (char *)&yprkv);
807 return (r);
808 }
809
810 int
811 yp_all(char *indomain, char *inmap, struct ypall_callback *incallback)
812 {
813 struct ypreq_nokey yprnk;
814 struct dom_binding *ysd;
815 struct timeval tv;
816 struct sockaddr_in clnt_sin;
817 CLIENT *clnt;
818 u_long status, savstat;
819 int clnt_sock;
820
821 /* Sanity check */
822
823 if (indomain == NULL || !strlen(indomain) ||
824 inmap == NULL || !strlen(inmap))
825 return (YPERR_BADARGS);
826
827 again:
828
829 if (_yp_dobind(indomain, &ysd) != 0)
830 return (YPERR_DOMAIN);
831
832 tv.tv_sec = _yplib_timeout;
833 tv.tv_usec = 0;
834
835 /* YPPROC_ALL manufactures its own channel to ypserv using TCP */
836
837 clnt_sock = RPC_ANYSOCK;
838 clnt_sin = ysd->dom_server_addr;
839 clnt_sin.sin_port = 0;
840 clnt = clnttcp_create(&clnt_sin, YPPROG, YPVERS, &clnt_sock, 0, 0);
841 if (clnt == NULL) {
842 printf("clnttcp_create failed\n");
843 return (YPERR_PMAP);
844 }
845
846 yprnk.domain = indomain;
847 yprnk.map = inmap;
848 ypresp_allfn = incallback->foreach;
849 ypresp_data = (void *)incallback->data;
850
851 if (clnt_call(clnt, YPPROC_ALL,
852 xdr_ypreq_nokey, &yprnk,
853 xdr_ypresp_all_seq, &status, tv) != RPC_SUCCESS) {
854 clnt_perror(ysd->dom_client, "yp_all: clnt_call");
855 clnt_destroy(clnt);
856 _yp_unbind(ysd);
857 goto again;
858 }
859
860 clnt_destroy(clnt);
861 savstat = status;
862 xdr_free(xdr_ypresp_all_seq, (char *)&status); /* not really needed... */
863 if (savstat != YP_NOMORE)
864 return (ypprot_err(savstat));
865 return (0);
866 }
867
868 int
869 yp_order(char *indomain, char *inmap, int *outorder)
870 {
871 struct dom_binding *ysd;
872 struct ypresp_order ypro;
873 struct ypreq_nokey yprnk;
874 struct timeval tv;
875 int r;
876
877 /* Sanity check */
878
879 if (indomain == NULL || !strlen(indomain) ||
880 inmap == NULL || !strlen(inmap))
881 return (YPERR_BADARGS);
882
883 again:
884 if (_yp_dobind(indomain, &ysd) != 0)
885 return (YPERR_DOMAIN);
886
887 tv.tv_sec = _yplib_timeout;
888 tv.tv_usec = 0;
889
890 yprnk.domain = indomain;
891 yprnk.map = inmap;
892
893 bzero((char *)(char *)&ypro, sizeof ypro);
894
895 r = clnt_call(ysd->dom_client, YPPROC_ORDER,
896 xdr_ypreq_nokey, &yprnk, xdr_ypresp_order, &ypro, tv);
897
898 /*
899 * NIS+ in YP compat mode doesn't support the YPPROC_ORDER
900 * procedure.
901 */
902 if (r == RPC_PROCUNAVAIL) {
903 return(YPERR_YPERR);
904 }
905
906 if (r != RPC_SUCCESS) {
907 clnt_perror(ysd->dom_client, "yp_order: clnt_call");
908 _yp_unbind(ysd);
909 goto again;
910 }
911
912 if (!(r = ypprot_err(ypro.stat))) {
913 *outorder = ypro.ordernum;
914 }
915
916 xdr_free(xdr_ypresp_order, (char *)&ypro);
917 return (r);
918 }
919
920 int
921 yp_master(char *indomain, char *inmap, char **outname)
922 {
923 struct dom_binding *ysd;
924 struct ypresp_master yprm;
925 struct ypreq_nokey yprnk;
926 struct timeval tv;
927 int r;
928
929 /* Sanity check */
930
931 if (indomain == NULL || !strlen(indomain) ||
932 inmap == NULL || !strlen(inmap))
933 return (YPERR_BADARGS);
934 again:
935 if (_yp_dobind(indomain, &ysd) != 0)
936 return (YPERR_DOMAIN);
937
938 tv.tv_sec = _yplib_timeout;
939 tv.tv_usec = 0;
940
941 yprnk.domain = indomain;
942 yprnk.map = inmap;
943
944 bzero((char *)&yprm, sizeof yprm);
945
946 r = clnt_call(ysd->dom_client, YPPROC_MASTER,
947 xdr_ypreq_nokey, &yprnk, xdr_ypresp_master, &yprm, tv);
948 if (r != RPC_SUCCESS) {
949 clnt_perror(ysd->dom_client, "yp_master: clnt_call");
950 _yp_unbind(ysd);
951 goto again;
952 }
953
954 if (!(r = ypprot_err(yprm.stat))) {
955 *outname = (char *)strdup(yprm.peer);
956 }
957
958 xdr_free(xdr_ypresp_master, (char *)&yprm);
959 return (r);
960 }
961
962 int
963 yp_maplist(char *indomain, struct ypmaplist **outmaplist)
964 {
965 struct dom_binding *ysd;
966 struct ypresp_maplist ypml;
967 struct timeval tv;
968 int r;
969
970 /* Sanity check */
971
972 if (indomain == NULL || !strlen(indomain))
973 return (YPERR_BADARGS);
974
975 again:
976 if (_yp_dobind(indomain, &ysd) != 0)
977 return (YPERR_DOMAIN);
978
979 tv.tv_sec = _yplib_timeout;
980 tv.tv_usec = 0;
981
982 bzero((char *)&ypml, sizeof ypml);
983
984 r = clnt_call(ysd->dom_client, YPPROC_MAPLIST,
985 xdr_domainname,(char *)&indomain,xdr_ypresp_maplist,&ypml,tv);
986 if (r != RPC_SUCCESS) {
987 clnt_perror(ysd->dom_client, "yp_maplist: clnt_call");
988 _yp_unbind(ysd);
989 goto again;
990 }
991 if (!(r = ypprot_err(ypml.stat))) {
992 *outmaplist = ypml.maps;
993 }
994
995 /* NO: xdr_free(xdr_ypresp_maplist, &ypml);*/
996 return (r);
997 }
998
999 char *
1000 yperr_string(int incode)
1001 {
1002 const char *errstr;
1003 static char err[80];
1004
1005 switch (incode) {
1006 case 0:
1007 errstr = "Success";;
1008 break;
1009 case YPERR_BADARGS:
1010 errstr = "Request arguments bad";
1011 break;
1012 case YPERR_RPC:
1013 errstr = "RPC failure";
1014 break;
1015 case YPERR_DOMAIN:
1016 errstr = "Can't bind to server which serves this domain";
1017 break;
1018 case YPERR_MAP:
1019 errstr = "No such map in server's domain";
1020 break;
1021 case YPERR_KEY:
1022 errstr = "No such key in map";
1023 break;
1024 case YPERR_YPERR:
1025 errstr = "YP server error";
1026 break;
1027 case YPERR_RESRC:
1028 errstr = "Local resource allocation failure";
1029 break;
1030 case YPERR_NOMORE:
1031 errstr = "No more records in map database";
1032 break;
1033 case YPERR_PMAP:
1034 errstr = "Can't communicate with portmapper";
1035 break;
1036 case YPERR_YPBIND:
1037 errstr = "Can't communicate with ypbind";
1038 break;
1039 case YPERR_YPSERV:
1040 errstr = "Can't communicate with ypserv";
1041 break;
1042 case YPERR_NODOM:
1043 errstr = "Local domain name not set";
1044 break;
1045 case YPERR_BADDB:
1046 errstr = "Server data base is bad";
1047 break;
1048 case YPERR_VERS:
1049 errstr = "YP server version mismatch - server can't supply service.";
1050 break;
1051 case YPERR_ACCESS:
1052 errstr = "Access violation";
1053 break;
1054 case YPERR_BUSY:
1055 errstr = "Database is busy";
1056 break;
1057 default:
1058 errstr = NULL;
1059 break;
1060 }
1061 if (errstr != NULL)
1062 strlcpy(err, errstr, sizeof(err));
1063 else
1064 snprintf(err, sizeof(err), "YP unknown error %d\n", incode);
1065 return (err);
1066 }
1067
1068 int
1069 ypprot_err(unsigned int incode)
1070 {
1071 switch (incode) {
1072 case YP_TRUE:
1073 return (0);
1074 case YP_FALSE:
1075 return (YPERR_YPBIND);
1076 case YP_NOMORE:
1077 return (YPERR_NOMORE);
1078 case YP_NOMAP:
1079 return (YPERR_MAP);
1080 case YP_NODOM:
1081 return (YPERR_DOMAIN);
1082 case YP_NOKEY:
1083 return (YPERR_KEY);
1084 case YP_BADOP:
1085 return (YPERR_YPERR);
1086 case YP_BADDB:
1087 return (YPERR_BADDB);
1088 case YP_YPERR:
1089 return (YPERR_YPERR);
1090 case YP_BADARGS:
1091 return (YPERR_BADARGS);
1092 case YP_VERS:
1093 return (YPERR_VERS);
1094 }
1095 return (YPERR_YPERR);
1096 }
1097
1098 int
1099 _yp_check(char **dom)
1100 {
1101 char *unused;
1102
1103 if (_yp_domain[0]=='\0')
1104 if (yp_get_default_domain(&unused))
1105 return (0);
1106
1107 if (dom)
1108 *dom = _yp_domain;
1109
1110 if (yp_bind(_yp_domain) == 0) {
1111 yp_unbind(_yp_domain);
1112 return (1);
1113 }
1114 return (0);
1115 }
DragonFly BSD