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e74dc197 | 1 | /* $OpenBSD: getrrsetbyname.c,v 1.11 2007/10/11 18:36:41 jakob Exp $ */ |
c9307018 | 2 | |
3 | /* | |
4 | * Copyright (c) 2001 Jakob Schlyter. 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 | * | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
29 | /* | |
30 | * Portions Copyright (c) 1999-2001 Internet Software Consortium. | |
31 | * | |
32 | * Permission to use, copy, modify, and distribute this software for any | |
33 | * purpose with or without fee is hereby granted, provided that the above | |
34 | * copyright notice and this permission notice appear in all copies. | |
35 | * | |
36 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM | |
37 | * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL | |
38 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL | |
39 | * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, | |
40 | * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING | |
41 | * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, | |
42 | * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION | |
43 | * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
44 | */ | |
45 | ||
08822d99 | 46 | /* OPENBSD ORIGINAL: lib/libc/net/getrrsetbyname.c */ |
47 | ||
c9307018 | 48 | #include "includes.h" |
49 | ||
540d72c3 | 50 | #ifndef HAVE_GETRRSETBYNAME |
c9307018 | 51 | |
30460aeb | 52 | #include <stdlib.h> |
53 | #include <string.h> | |
54 | ||
55 | #include <netinet/in.h> | |
56 | #include <arpa/inet.h> | |
57 | ||
c9307018 | 58 | #include "getrrsetbyname.h" |
59 | ||
7e82606e | 60 | #if defined(HAVE_DECL_H_ERRNO) && !HAVE_DECL_H_ERRNO |
61 | extern int h_errno; | |
62 | #endif | |
63 | ||
08822d99 | 64 | /* We don't need multithread support here */ |
65 | #ifdef _THREAD_PRIVATE | |
66 | # undef _THREAD_PRIVATE | |
67 | #endif | |
68 | #define _THREAD_PRIVATE(a,b,c) (c) | |
30460aeb | 69 | |
fa0f0f45 | 70 | #ifndef HAVE__RES_EXTERN |
08822d99 | 71 | struct __res_state _res; |
fa0f0f45 | 72 | #endif |
c9307018 | 73 | |
08822d99 | 74 | /* Necessary functions and macros */ |
c9307018 | 75 | |
76 | /* | |
77 | * Inline versions of get/put short/long. Pointer is advanced. | |
78 | * | |
79 | * These macros demonstrate the property of C whereby it can be | |
80 | * portable or it can be elegant but rarely both. | |
81 | */ | |
82 | ||
83 | #ifndef INT32SZ | |
84 | # define INT32SZ 4 | |
85 | #endif | |
86 | #ifndef INT16SZ | |
87 | # define INT16SZ 2 | |
88 | #endif | |
89 | ||
90 | #ifndef GETSHORT | |
91 | #define GETSHORT(s, cp) { \ | |
92 | register u_char *t_cp = (u_char *)(cp); \ | |
93 | (s) = ((u_int16_t)t_cp[0] << 8) \ | |
94 | | ((u_int16_t)t_cp[1]) \ | |
95 | ; \ | |
96 | (cp) += INT16SZ; \ | |
97 | } | |
98 | #endif | |
99 | ||
100 | #ifndef GETLONG | |
101 | #define GETLONG(l, cp) { \ | |
102 | register u_char *t_cp = (u_char *)(cp); \ | |
103 | (l) = ((u_int32_t)t_cp[0] << 24) \ | |
104 | | ((u_int32_t)t_cp[1] << 16) \ | |
105 | | ((u_int32_t)t_cp[2] << 8) \ | |
106 | | ((u_int32_t)t_cp[3]) \ | |
107 | ; \ | |
108 | (cp) += INT32SZ; \ | |
109 | } | |
110 | #endif | |
111 | ||
112 | /* | |
113 | * Routines to insert/extract short/long's. | |
114 | */ | |
115 | ||
116 | #ifndef HAVE__GETSHORT | |
117 | static u_int16_t | |
118 | _getshort(msgp) | |
119 | register const u_char *msgp; | |
120 | { | |
121 | register u_int16_t u; | |
122 | ||
123 | GETSHORT(u, msgp); | |
124 | return (u); | |
125 | } | |
2ce0bfe4 | 126 | #elif defined(HAVE_DECL__GETSHORT) && (HAVE_DECL__GETSHORT == 0) |
127 | u_int16_t _getshort(register const u_char *); | |
c9307018 | 128 | #endif |
129 | ||
130 | #ifndef HAVE__GETLONG | |
131 | static u_int32_t | |
132 | _getlong(msgp) | |
133 | register const u_char *msgp; | |
134 | { | |
135 | register u_int32_t u; | |
136 | ||
137 | GETLONG(u, msgp); | |
138 | return (u); | |
139 | } | |
2ce0bfe4 | 140 | #elif defined(HAVE_DECL__GETLONG) && (HAVE_DECL__GETLONG == 0) |
141 | u_int32_t _getlong(register const u_char *); | |
c9307018 | 142 | #endif |
143 | ||
08822d99 | 144 | /* ************** */ |
145 | ||
146 | #define ANSWER_BUFFER_SIZE 1024*64 | |
147 | ||
148 | struct dns_query { | |
149 | char *name; | |
150 | u_int16_t type; | |
151 | u_int16_t class; | |
152 | struct dns_query *next; | |
153 | }; | |
154 | ||
155 | struct dns_rr { | |
156 | char *name; | |
157 | u_int16_t type; | |
158 | u_int16_t class; | |
159 | u_int16_t ttl; | |
160 | u_int16_t size; | |
161 | void *rdata; | |
162 | struct dns_rr *next; | |
163 | }; | |
164 | ||
165 | struct dns_response { | |
166 | HEADER header; | |
167 | struct dns_query *query; | |
168 | struct dns_rr *answer; | |
169 | struct dns_rr *authority; | |
170 | struct dns_rr *additional; | |
171 | }; | |
172 | ||
173 | static struct dns_response *parse_dns_response(const u_char *, int); | |
174 | static struct dns_query *parse_dns_qsection(const u_char *, int, | |
175 | const u_char **, int); | |
176 | static struct dns_rr *parse_dns_rrsection(const u_char *, int, const u_char **, | |
177 | int); | |
178 | ||
179 | static void free_dns_query(struct dns_query *); | |
180 | static void free_dns_rr(struct dns_rr *); | |
181 | static void free_dns_response(struct dns_response *); | |
182 | ||
183 | static int count_dns_rr(struct dns_rr *, u_int16_t, u_int16_t); | |
184 | ||
c9307018 | 185 | int |
186 | getrrsetbyname(const char *hostname, unsigned int rdclass, | |
187 | unsigned int rdtype, unsigned int flags, | |
188 | struct rrsetinfo **res) | |
189 | { | |
08822d99 | 190 | struct __res_state *_resp = _THREAD_PRIVATE(_res, _res, &_res); |
c9307018 | 191 | int result; |
192 | struct rrsetinfo *rrset = NULL; | |
08822d99 | 193 | struct dns_response *response = NULL; |
c9307018 | 194 | struct dns_rr *rr; |
195 | struct rdatainfo *rdata; | |
196 | int length; | |
197 | unsigned int index_ans, index_sig; | |
198 | u_char answer[ANSWER_BUFFER_SIZE]; | |
199 | ||
200 | /* check for invalid class and type */ | |
201 | if (rdclass > 0xffff || rdtype > 0xffff) { | |
202 | result = ERRSET_INVAL; | |
203 | goto fail; | |
204 | } | |
205 | ||
206 | /* don't allow queries of class or type ANY */ | |
207 | if (rdclass == 0xff || rdtype == 0xff) { | |
208 | result = ERRSET_INVAL; | |
209 | goto fail; | |
210 | } | |
211 | ||
212 | /* don't allow flags yet, unimplemented */ | |
213 | if (flags) { | |
214 | result = ERRSET_INVAL; | |
215 | goto fail; | |
216 | } | |
217 | ||
218 | /* initialize resolver */ | |
08822d99 | 219 | if ((_resp->options & RES_INIT) == 0 && res_init() == -1) { |
c9307018 | 220 | result = ERRSET_FAIL; |
221 | goto fail; | |
222 | } | |
223 | ||
224 | #ifdef DEBUG | |
08822d99 | 225 | _resp->options |= RES_DEBUG; |
c9307018 | 226 | #endif /* DEBUG */ |
227 | ||
228 | #ifdef RES_USE_DNSSEC | |
229 | /* turn on DNSSEC if EDNS0 is configured */ | |
08822d99 | 230 | if (_resp->options & RES_USE_EDNS0) |
231 | _resp->options |= RES_USE_DNSSEC; | |
c9307018 | 232 | #endif /* RES_USE_DNSEC */ |
233 | ||
234 | /* make query */ | |
235 | length = res_query(hostname, (signed int) rdclass, (signed int) rdtype, | |
236 | answer, sizeof(answer)); | |
237 | if (length < 0) { | |
238 | switch(h_errno) { | |
239 | case HOST_NOT_FOUND: | |
240 | result = ERRSET_NONAME; | |
241 | goto fail; | |
242 | case NO_DATA: | |
243 | result = ERRSET_NODATA; | |
244 | goto fail; | |
245 | default: | |
246 | result = ERRSET_FAIL; | |
247 | goto fail; | |
248 | } | |
249 | } | |
250 | ||
251 | /* parse result */ | |
252 | response = parse_dns_response(answer, length); | |
253 | if (response == NULL) { | |
254 | result = ERRSET_FAIL; | |
255 | goto fail; | |
256 | } | |
257 | ||
258 | if (response->header.qdcount != 1) { | |
259 | result = ERRSET_FAIL; | |
260 | goto fail; | |
261 | } | |
262 | ||
263 | /* initialize rrset */ | |
264 | rrset = calloc(1, sizeof(struct rrsetinfo)); | |
265 | if (rrset == NULL) { | |
266 | result = ERRSET_NOMEMORY; | |
267 | goto fail; | |
268 | } | |
269 | rrset->rri_rdclass = response->query->class; | |
270 | rrset->rri_rdtype = response->query->type; | |
271 | rrset->rri_ttl = response->answer->ttl; | |
272 | rrset->rri_nrdatas = response->header.ancount; | |
273 | ||
274 | #ifdef HAVE_HEADER_AD | |
275 | /* check for authenticated data */ | |
276 | if (response->header.ad == 1) | |
277 | rrset->rri_flags |= RRSET_VALIDATED; | |
278 | #endif | |
279 | ||
280 | /* copy name from answer section */ | |
08822d99 | 281 | rrset->rri_name = strdup(response->answer->name); |
c9307018 | 282 | if (rrset->rri_name == NULL) { |
283 | result = ERRSET_NOMEMORY; | |
284 | goto fail; | |
285 | } | |
c9307018 | 286 | |
287 | /* count answers */ | |
288 | rrset->rri_nrdatas = count_dns_rr(response->answer, rrset->rri_rdclass, | |
289 | rrset->rri_rdtype); | |
290 | rrset->rri_nsigs = count_dns_rr(response->answer, rrset->rri_rdclass, | |
e74dc197 | 291 | T_RRSIG); |
c9307018 | 292 | |
293 | /* allocate memory for answers */ | |
294 | rrset->rri_rdatas = calloc(rrset->rri_nrdatas, | |
295 | sizeof(struct rdatainfo)); | |
296 | if (rrset->rri_rdatas == NULL) { | |
297 | result = ERRSET_NOMEMORY; | |
298 | goto fail; | |
299 | } | |
300 | ||
301 | /* allocate memory for signatures */ | |
0b90ac93 | 302 | if (rrset->rri_nsigs > 0) { |
303 | rrset->rri_sigs = calloc(rrset->rri_nsigs, sizeof(struct rdatainfo)); | |
304 | if (rrset->rri_sigs == NULL) { | |
305 | result = ERRSET_NOMEMORY; | |
306 | goto fail; | |
307 | } | |
c9307018 | 308 | } |
309 | ||
310 | /* copy answers & signatures */ | |
311 | for (rr = response->answer, index_ans = 0, index_sig = 0; | |
312 | rr; rr = rr->next) { | |
313 | ||
314 | rdata = NULL; | |
315 | ||
316 | if (rr->class == rrset->rri_rdclass && | |
317 | rr->type == rrset->rri_rdtype) | |
318 | rdata = &rrset->rri_rdatas[index_ans++]; | |
319 | ||
320 | if (rr->class == rrset->rri_rdclass && | |
e74dc197 | 321 | rr->type == T_RRSIG) |
c9307018 | 322 | rdata = &rrset->rri_sigs[index_sig++]; |
323 | ||
324 | if (rdata) { | |
325 | rdata->rdi_length = rr->size; | |
326 | rdata->rdi_data = malloc(rr->size); | |
327 | ||
328 | if (rdata->rdi_data == NULL) { | |
329 | result = ERRSET_NOMEMORY; | |
330 | goto fail; | |
331 | } | |
332 | memcpy(rdata->rdi_data, rr->rdata, rr->size); | |
333 | } | |
334 | } | |
08822d99 | 335 | free_dns_response(response); |
c9307018 | 336 | |
337 | *res = rrset; | |
338 | return (ERRSET_SUCCESS); | |
339 | ||
340 | fail: | |
341 | if (rrset != NULL) | |
342 | freerrset(rrset); | |
08822d99 | 343 | if (response != NULL) |
344 | free_dns_response(response); | |
c9307018 | 345 | return (result); |
346 | } | |
347 | ||
348 | void | |
349 | freerrset(struct rrsetinfo *rrset) | |
350 | { | |
351 | u_int16_t i; | |
352 | ||
353 | if (rrset == NULL) | |
354 | return; | |
355 | ||
356 | if (rrset->rri_rdatas) { | |
357 | for (i = 0; i < rrset->rri_nrdatas; i++) { | |
358 | if (rrset->rri_rdatas[i].rdi_data == NULL) | |
359 | break; | |
360 | free(rrset->rri_rdatas[i].rdi_data); | |
361 | } | |
362 | free(rrset->rri_rdatas); | |
363 | } | |
364 | ||
365 | if (rrset->rri_sigs) { | |
366 | for (i = 0; i < rrset->rri_nsigs; i++) { | |
367 | if (rrset->rri_sigs[i].rdi_data == NULL) | |
368 | break; | |
369 | free(rrset->rri_sigs[i].rdi_data); | |
370 | } | |
371 | free(rrset->rri_sigs); | |
372 | } | |
373 | ||
374 | if (rrset->rri_name) | |
375 | free(rrset->rri_name); | |
376 | free(rrset); | |
377 | } | |
378 | ||
379 | /* | |
380 | * DNS response parsing routines | |
381 | */ | |
382 | static struct dns_response * | |
383 | parse_dns_response(const u_char *answer, int size) | |
384 | { | |
385 | struct dns_response *resp; | |
386 | const u_char *cp; | |
387 | ||
388 | /* allocate memory for the response */ | |
389 | resp = calloc(1, sizeof(*resp)); | |
390 | if (resp == NULL) | |
391 | return (NULL); | |
392 | ||
393 | /* initialize current pointer */ | |
394 | cp = answer; | |
395 | ||
396 | /* copy header */ | |
397 | memcpy(&resp->header, cp, HFIXEDSZ); | |
398 | cp += HFIXEDSZ; | |
399 | ||
400 | /* fix header byte order */ | |
401 | resp->header.qdcount = ntohs(resp->header.qdcount); | |
402 | resp->header.ancount = ntohs(resp->header.ancount); | |
403 | resp->header.nscount = ntohs(resp->header.nscount); | |
404 | resp->header.arcount = ntohs(resp->header.arcount); | |
405 | ||
406 | /* there must be at least one query */ | |
407 | if (resp->header.qdcount < 1) { | |
408 | free_dns_response(resp); | |
409 | return (NULL); | |
410 | } | |
411 | ||
412 | /* parse query section */ | |
413 | resp->query = parse_dns_qsection(answer, size, &cp, | |
414 | resp->header.qdcount); | |
415 | if (resp->header.qdcount && resp->query == NULL) { | |
416 | free_dns_response(resp); | |
417 | return (NULL); | |
418 | } | |
419 | ||
420 | /* parse answer section */ | |
421 | resp->answer = parse_dns_rrsection(answer, size, &cp, | |
422 | resp->header.ancount); | |
423 | if (resp->header.ancount && resp->answer == NULL) { | |
424 | free_dns_response(resp); | |
425 | return (NULL); | |
426 | } | |
427 | ||
428 | /* parse authority section */ | |
429 | resp->authority = parse_dns_rrsection(answer, size, &cp, | |
430 | resp->header.nscount); | |
431 | if (resp->header.nscount && resp->authority == NULL) { | |
432 | free_dns_response(resp); | |
433 | return (NULL); | |
434 | } | |
435 | ||
436 | /* parse additional section */ | |
437 | resp->additional = parse_dns_rrsection(answer, size, &cp, | |
438 | resp->header.arcount); | |
439 | if (resp->header.arcount && resp->additional == NULL) { | |
440 | free_dns_response(resp); | |
441 | return (NULL); | |
442 | } | |
443 | ||
444 | return (resp); | |
445 | } | |
446 | ||
447 | static struct dns_query * | |
448 | parse_dns_qsection(const u_char *answer, int size, const u_char **cp, int count) | |
449 | { | |
450 | struct dns_query *head, *curr, *prev; | |
451 | int i, length; | |
452 | char name[MAXDNAME]; | |
453 | ||
454 | for (i = 1, head = NULL, prev = NULL; i <= count; i++, prev = curr) { | |
455 | ||
456 | /* allocate and initialize struct */ | |
457 | curr = calloc(1, sizeof(struct dns_query)); | |
458 | if (curr == NULL) { | |
459 | free_dns_query(head); | |
460 | return (NULL); | |
461 | } | |
462 | if (head == NULL) | |
463 | head = curr; | |
464 | if (prev != NULL) | |
465 | prev->next = curr; | |
466 | ||
467 | /* name */ | |
468 | length = dn_expand(answer, answer + size, *cp, name, | |
469 | sizeof(name)); | |
470 | if (length < 0) { | |
471 | free_dns_query(head); | |
472 | return (NULL); | |
473 | } | |
474 | curr->name = strdup(name); | |
475 | if (curr->name == NULL) { | |
476 | free_dns_query(head); | |
477 | return (NULL); | |
478 | } | |
479 | *cp += length; | |
480 | ||
481 | /* type */ | |
482 | curr->type = _getshort(*cp); | |
483 | *cp += INT16SZ; | |
484 | ||
485 | /* class */ | |
486 | curr->class = _getshort(*cp); | |
487 | *cp += INT16SZ; | |
488 | } | |
489 | ||
490 | return (head); | |
491 | } | |
492 | ||
493 | static struct dns_rr * | |
08822d99 | 494 | parse_dns_rrsection(const u_char *answer, int size, const u_char **cp, |
495 | int count) | |
c9307018 | 496 | { |
497 | struct dns_rr *head, *curr, *prev; | |
498 | int i, length; | |
499 | char name[MAXDNAME]; | |
500 | ||
501 | for (i = 1, head = NULL, prev = NULL; i <= count; i++, prev = curr) { | |
502 | ||
503 | /* allocate and initialize struct */ | |
504 | curr = calloc(1, sizeof(struct dns_rr)); | |
505 | if (curr == NULL) { | |
506 | free_dns_rr(head); | |
507 | return (NULL); | |
508 | } | |
509 | if (head == NULL) | |
510 | head = curr; | |
511 | if (prev != NULL) | |
512 | prev->next = curr; | |
513 | ||
514 | /* name */ | |
515 | length = dn_expand(answer, answer + size, *cp, name, | |
516 | sizeof(name)); | |
517 | if (length < 0) { | |
518 | free_dns_rr(head); | |
519 | return (NULL); | |
520 | } | |
521 | curr->name = strdup(name); | |
522 | if (curr->name == NULL) { | |
523 | free_dns_rr(head); | |
524 | return (NULL); | |
525 | } | |
526 | *cp += length; | |
527 | ||
528 | /* type */ | |
529 | curr->type = _getshort(*cp); | |
530 | *cp += INT16SZ; | |
531 | ||
532 | /* class */ | |
533 | curr->class = _getshort(*cp); | |
534 | *cp += INT16SZ; | |
535 | ||
536 | /* ttl */ | |
537 | curr->ttl = _getlong(*cp); | |
538 | *cp += INT32SZ; | |
539 | ||
540 | /* rdata size */ | |
541 | curr->size = _getshort(*cp); | |
542 | *cp += INT16SZ; | |
543 | ||
544 | /* rdata itself */ | |
545 | curr->rdata = malloc(curr->size); | |
546 | if (curr->rdata == NULL) { | |
547 | free_dns_rr(head); | |
548 | return (NULL); | |
549 | } | |
550 | memcpy(curr->rdata, *cp, curr->size); | |
551 | *cp += curr->size; | |
552 | } | |
553 | ||
554 | return (head); | |
555 | } | |
556 | ||
557 | static void | |
558 | free_dns_query(struct dns_query *p) | |
559 | { | |
560 | if (p == NULL) | |
561 | return; | |
562 | ||
563 | if (p->name) | |
564 | free(p->name); | |
565 | free_dns_query(p->next); | |
566 | free(p); | |
567 | } | |
568 | ||
569 | static void | |
570 | free_dns_rr(struct dns_rr *p) | |
571 | { | |
572 | if (p == NULL) | |
573 | return; | |
574 | ||
575 | if (p->name) | |
576 | free(p->name); | |
577 | if (p->rdata) | |
578 | free(p->rdata); | |
579 | free_dns_rr(p->next); | |
580 | free(p); | |
581 | } | |
582 | ||
583 | static void | |
584 | free_dns_response(struct dns_response *p) | |
585 | { | |
586 | if (p == NULL) | |
587 | return; | |
588 | ||
589 | free_dns_query(p->query); | |
590 | free_dns_rr(p->answer); | |
591 | free_dns_rr(p->authority); | |
592 | free_dns_rr(p->additional); | |
593 | free(p); | |
594 | } | |
595 | ||
596 | static int | |
597 | count_dns_rr(struct dns_rr *p, u_int16_t class, u_int16_t type) | |
598 | { | |
599 | int n = 0; | |
600 | ||
601 | while(p) { | |
602 | if (p->class == class && p->type == type) | |
603 | n++; | |
604 | p = p->next; | |
605 | } | |
606 | ||
607 | return (n); | |
608 | } | |
609 | ||
540d72c3 | 610 | #endif /* !defined(HAVE_GETRRSETBYNAME) */ |