2 * Copyright (C) 2004, 2005, 2007-2009, 2011-2013 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001, 2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
20 /* Reviewed: Thu Mar 16 16:52:50 PST 2000 by bwelling */
24 #ifndef RDATA_GENERIC_NAPTR_35_C
25 #define RDATA_GENERIC_NAPTR_35_C
27 #define RRTYPE_NAPTR_ATTRIBUTES (0)
29 #include <isc/regex.h>
32 * Check the wire format of the Regexp field.
33 * Don't allow embeded NUL's.
35 static inline isc_result_t
36 txt_valid_regex(const unsigned char *txt) {
37 unsigned int nsub = 0;
40 isc_boolean_t flags = ISC_FALSE;
41 isc_boolean_t replace = ISC_FALSE;
49 return (ISC_R_SUCCESS);
55 * Digits, backslash and flags can't be delimiters.
58 case '0': case '1': case '2': case '3': case '4':
59 case '5': case '6': case '7': case '8': case '9':
60 case '\\': case 'i': case 0:
61 return (DNS_R_SYNTAX);
68 return (DNS_R_SYNTAX);
69 if (c == delim && !replace) {
72 } else if (c == delim && !flags) {
75 } else if (c == delim)
76 return (DNS_R_SYNTAX);
78 * Flags are not escaped.
85 return (DNS_R_SYNTAX);
92 return (DNS_R_SYNTAX);
95 return (DNS_R_SYNTAX);
99 case '0': return (DNS_R_SYNTAX);
100 case '1': if (nsub < 1) nsub = 1; break;
101 case '2': if (nsub < 2) nsub = 2; break;
102 case '3': if (nsub < 3) nsub = 3; break;
103 case '4': if (nsub < 4) nsub = 4; break;
104 case '5': if (nsub < 5) nsub = 5; break;
105 case '6': if (nsub < 6) nsub = 6; break;
106 case '7': if (nsub < 7) nsub = 7; break;
107 case '8': if (nsub < 8) nsub = 8; break;
108 case '9': if (nsub < 9) nsub = 9; break;
115 return (DNS_R_SYNTAX);
117 n = isc_regex_validate(regex);
118 if (n < 0 || nsub > (unsigned int)n)
119 return (DNS_R_SYNTAX);
120 return (ISC_R_SUCCESS);
123 static inline isc_result_t
124 fromtext_naptr(ARGS_FROMTEXT) {
128 unsigned char *regex;
139 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
141 if (token.value.as_ulong > 0xffffU)
143 RETERR(uint16_tobuffer(token.value.as_ulong, target));
148 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
150 if (token.value.as_ulong > 0xffffU)
152 RETERR(uint16_tobuffer(token.value.as_ulong, target));
157 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
159 RETTOK(txt_fromtext(&token.value.as_textregion, target));
164 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
166 RETTOK(txt_fromtext(&token.value.as_textregion, target));
171 regex = isc_buffer_used(target);
172 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
174 RETTOK(txt_fromtext(&token.value.as_textregion, target));
175 RETTOK(txt_valid_regex(regex));
180 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
182 dns_name_init(&name, NULL);
183 buffer_fromregion(&buffer, &token.value.as_region);
184 origin = (origin != NULL) ? origin : dns_rootname;
185 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
186 return (ISC_R_SUCCESS);
189 static inline isc_result_t
190 totext_naptr(ARGS_TOTEXT) {
195 char buf[sizeof("64000")];
198 REQUIRE(rdata->type == 35);
199 REQUIRE(rdata->length != 0);
201 dns_name_init(&name, NULL);
202 dns_name_init(&prefix, NULL);
204 dns_rdata_toregion(rdata, ®ion);
209 num = uint16_fromregion(®ion);
210 isc_region_consume(®ion, 2);
211 sprintf(buf, "%u", num);
212 RETERR(str_totext(buf, target));
213 RETERR(str_totext(" ", target));
218 num = uint16_fromregion(®ion);
219 isc_region_consume(®ion, 2);
220 sprintf(buf, "%u", num);
221 RETERR(str_totext(buf, target));
222 RETERR(str_totext(" ", target));
227 RETERR(txt_totext(®ion, target));
228 RETERR(str_totext(" ", target));
233 RETERR(txt_totext(®ion, target));
234 RETERR(str_totext(" ", target));
239 RETERR(txt_totext(®ion, target));
240 RETERR(str_totext(" ", target));
245 dns_name_fromregion(&name, ®ion);
246 sub = name_prefix(&name, tctx->origin, &prefix);
247 return (dns_name_totext(&prefix, sub, target));
250 static inline isc_result_t
251 fromwire_naptr(ARGS_FROMWIRE) {
254 unsigned char *regex;
261 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
263 dns_name_init(&name, NULL);
268 isc_buffer_activeregion(source, &sr);
270 return (ISC_R_UNEXPECTEDEND);
271 RETERR(mem_tobuffer(target, sr.base, 4));
272 isc_buffer_forward(source, 4);
277 RETERR(txt_fromwire(source, target));
282 RETERR(txt_fromwire(source, target));
287 regex = isc_buffer_used(target);
288 RETERR(txt_fromwire(source, target));
289 RETERR(txt_valid_regex(regex));
294 return (dns_name_fromwire(&name, source, dctx, options, target));
297 static inline isc_result_t
298 towire_naptr(ARGS_TOWIRE) {
300 dns_offsets_t offsets;
303 REQUIRE(rdata->type == 35);
304 REQUIRE(rdata->length != 0);
306 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
310 dns_rdata_toregion(rdata, &sr);
311 RETERR(mem_tobuffer(target, sr.base, 4));
312 isc_region_consume(&sr, 4);
317 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
318 isc_region_consume(&sr, sr.base[0] + 1);
323 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
324 isc_region_consume(&sr, sr.base[0] + 1);
329 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
330 isc_region_consume(&sr, sr.base[0] + 1);
335 dns_name_init(&name, offsets);
336 dns_name_fromregion(&name, &sr);
337 return (dns_name_towire(&name, cctx, target));
341 compare_naptr(ARGS_COMPARE) {
344 isc_region_t region1;
345 isc_region_t region2;
348 REQUIRE(rdata1->type == rdata2->type);
349 REQUIRE(rdata1->rdclass == rdata2->rdclass);
350 REQUIRE(rdata1->type == 35);
351 REQUIRE(rdata1->length != 0);
352 REQUIRE(rdata2->length != 0);
354 dns_rdata_toregion(rdata1, ®ion1);
355 dns_rdata_toregion(rdata2, ®ion2);
360 order = memcmp(region1.base, region2.base, 4);
362 return (order < 0 ? -1 : 1);
363 isc_region_consume(®ion1, 4);
364 isc_region_consume(®ion2, 4);
369 len = ISC_MIN(region1.base[0], region2.base[0]);
370 order = memcmp(region1.base, region2.base, len + 1);
372 return (order < 0 ? -1 : 1);
373 isc_region_consume(®ion1, region1.base[0] + 1);
374 isc_region_consume(®ion2, region2.base[0] + 1);
379 len = ISC_MIN(region1.base[0], region2.base[0]);
380 order = memcmp(region1.base, region2.base, len + 1);
382 return (order < 0 ? -1 : 1);
383 isc_region_consume(®ion1, region1.base[0] + 1);
384 isc_region_consume(®ion2, region2.base[0] + 1);
389 len = ISC_MIN(region1.base[0], region2.base[0]);
390 order = memcmp(region1.base, region2.base, len + 1);
392 return (order < 0 ? -1 : 1);
393 isc_region_consume(®ion1, region1.base[0] + 1);
394 isc_region_consume(®ion2, region2.base[0] + 1);
399 dns_name_init(&name1, NULL);
400 dns_name_init(&name2, NULL);
402 dns_name_fromregion(&name1, ®ion1);
403 dns_name_fromregion(&name2, ®ion2);
405 return (dns_name_rdatacompare(&name1, &name2));
408 static inline isc_result_t
409 fromstruct_naptr(ARGS_FROMSTRUCT) {
410 dns_rdata_naptr_t *naptr = source;
414 REQUIRE(source != NULL);
415 REQUIRE(naptr->common.rdtype == type);
416 REQUIRE(naptr->common.rdclass == rdclass);
417 REQUIRE(naptr->flags != NULL || naptr->flags_len == 0);
418 REQUIRE(naptr->service != NULL || naptr->service_len == 0);
419 REQUIRE(naptr->regexp != NULL || naptr->regexp_len == 0);
424 RETERR(uint16_tobuffer(naptr->order, target));
425 RETERR(uint16_tobuffer(naptr->preference, target));
426 RETERR(uint8_tobuffer(naptr->flags_len, target));
427 RETERR(mem_tobuffer(target, naptr->flags, naptr->flags_len));
428 RETERR(uint8_tobuffer(naptr->service_len, target));
429 RETERR(mem_tobuffer(target, naptr->service, naptr->service_len));
430 RETERR(uint8_tobuffer(naptr->regexp_len, target));
431 RETERR(mem_tobuffer(target, naptr->regexp, naptr->regexp_len));
432 dns_name_toregion(&naptr->replacement, ®ion);
433 return (isc_buffer_copyregion(target, ®ion));
436 static inline isc_result_t
437 tostruct_naptr(ARGS_TOSTRUCT) {
438 dns_rdata_naptr_t *naptr = target;
443 REQUIRE(rdata->type == 35);
444 REQUIRE(target != NULL);
445 REQUIRE(rdata->length != 0);
447 naptr->common.rdclass = rdata->rdclass;
448 naptr->common.rdtype = rdata->type;
449 ISC_LINK_INIT(&naptr->common, link);
452 naptr->service = NULL;
453 naptr->regexp = NULL;
455 dns_rdata_toregion(rdata, &r);
457 naptr->order = uint16_fromregion(&r);
458 isc_region_consume(&r, 2);
460 naptr->preference = uint16_fromregion(&r);
461 isc_region_consume(&r, 2);
463 naptr->flags_len = uint8_fromregion(&r);
464 isc_region_consume(&r, 1);
465 INSIST(naptr->flags_len <= r.length);
466 naptr->flags = mem_maybedup(mctx, r.base, naptr->flags_len);
467 if (naptr->flags == NULL)
469 isc_region_consume(&r, naptr->flags_len);
471 naptr->service_len = uint8_fromregion(&r);
472 isc_region_consume(&r, 1);
473 INSIST(naptr->service_len <= r.length);
474 naptr->service = mem_maybedup(mctx, r.base, naptr->service_len);
475 if (naptr->service == NULL)
477 isc_region_consume(&r, naptr->service_len);
479 naptr->regexp_len = uint8_fromregion(&r);
480 isc_region_consume(&r, 1);
481 INSIST(naptr->regexp_len <= r.length);
482 naptr->regexp = mem_maybedup(mctx, r.base, naptr->regexp_len);
483 if (naptr->regexp == NULL)
485 isc_region_consume(&r, naptr->regexp_len);
487 dns_name_init(&name, NULL);
488 dns_name_fromregion(&name, &r);
489 dns_name_init(&naptr->replacement, NULL);
490 result = name_duporclone(&name, mctx, &naptr->replacement);
491 if (result != ISC_R_SUCCESS)
494 return (ISC_R_SUCCESS);
497 if (mctx != NULL && naptr->flags != NULL)
498 isc_mem_free(mctx, naptr->flags);
499 if (mctx != NULL && naptr->service != NULL)
500 isc_mem_free(mctx, naptr->service);
501 if (mctx != NULL && naptr->regexp != NULL)
502 isc_mem_free(mctx, naptr->regexp);
503 return (ISC_R_NOMEMORY);
507 freestruct_naptr(ARGS_FREESTRUCT) {
508 dns_rdata_naptr_t *naptr = source;
510 REQUIRE(source != NULL);
511 REQUIRE(naptr->common.rdtype == 35);
513 if (naptr->mctx == NULL)
516 if (naptr->flags != NULL)
517 isc_mem_free(naptr->mctx, naptr->flags);
518 if (naptr->service != NULL)
519 isc_mem_free(naptr->mctx, naptr->service);
520 if (naptr->regexp != NULL)
521 isc_mem_free(naptr->mctx, naptr->regexp);
522 dns_name_free(&naptr->replacement, naptr->mctx);
526 static inline isc_result_t
527 additionaldata_naptr(ARGS_ADDLDATA) {
529 dns_offsets_t offsets;
531 dns_rdatatype_t atype;
532 unsigned int i, flagslen;
535 REQUIRE(rdata->type == 35);
540 dns_rdata_toregion(rdata, &sr);
541 isc_region_consume(&sr, 4);
547 flagslen = sr.base[0];
548 cp = (char *)&sr.base[1];
549 for (i = 0; i < flagslen; i++, cp++) {
550 if (*cp == 'S' || *cp == 's') {
551 atype = dns_rdatatype_srv;
554 if (*cp == 'A' || *cp == 'a') {
555 atype = dns_rdatatype_a;
559 isc_region_consume(&sr, flagslen + 1);
564 isc_region_consume(&sr, sr.base[0] + 1);
569 isc_region_consume(&sr, sr.base[0] + 1);
574 dns_name_init(&name, offsets);
575 dns_name_fromregion(&name, &sr);
578 return ((add)(arg, &name, atype));
580 return (ISC_R_SUCCESS);
583 static inline isc_result_t
584 digest_naptr(ARGS_DIGEST) {
586 unsigned int length, n;
590 REQUIRE(rdata->type == 35);
592 dns_rdata_toregion(rdata, &r1);
600 isc_region_consume(&r2, 4);
607 isc_region_consume(&r2, n);
614 isc_region_consume(&r2, n);
621 isc_region_consume(&r2, n);
624 * Digest the RR up to the replacement name.
627 result = (digest)(arg, &r1);
628 if (result != ISC_R_SUCCESS)
635 dns_name_init(&name, NULL);
636 dns_name_fromregion(&name, &r2);
638 return (dns_name_digest(&name, digest, arg));
641 static inline isc_boolean_t
642 checkowner_naptr(ARGS_CHECKOWNER) {
654 static inline isc_boolean_t
655 checknames_naptr(ARGS_CHECKNAMES) {
657 REQUIRE(rdata->type == 35);
667 casecompare_naptr(ARGS_COMPARE) {
668 return (compare_naptr(rdata1, rdata2));
671 #endif /* RDATA_GENERIC_NAPTR_35_C */