2 * Copyright (C) 2004, 2005, 2007-2009 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.
18 /* $Id: naptr_35.c,v 1.56 2009-12-04 21:09:34 marka Exp $ */
20 /* Reviewed: Thu Mar 16 16:52:50 PST 2000 by bwelling */
24 #ifndef RDATA_IN_1_NAPTR_35_C
25 #define RDATA_IN_1_NAPTR_35_C
27 #define RRTYPE_NAPTR_ATTRIBUTES (0)
33 * Check the wire format of the Regexp field.
34 * Don't allow embeded NUL's.
36 static inline isc_result_t
37 txt_valid_regex(const unsigned char *txt) {
40 unsigned int regflags = REG_EXTENDED;
41 unsigned int nsub = 0;
45 isc_boolean_t flags = ISC_FALSE;
46 isc_boolean_t replace = ISC_FALSE;
53 return (ISC_R_SUCCESS);
59 * Digits, backslash and flags can't be delimiters.
62 case '0': case '1': case '2': case '3': case '4':
63 case '5': case '6': case '7': case '8': case '9':
64 case '\\': case 'i': case 0:
65 return (DNS_R_SYNTAX);
69 memset(&preg, 0, sizeof(preg));
76 return (DNS_R_SYNTAX);
77 if (c == delim && !replace) {
80 } else if (c == delim && !flags) {
83 } else if (c == delim)
84 return (DNS_R_SYNTAX);
86 * Flags are not escaped.
92 regflags |= REG_ICASE;
96 return (DNS_R_SYNTAX);
105 return (DNS_R_SYNTAX);
108 return (DNS_R_SYNTAX);
112 case '0': return (DNS_R_SYNTAX);
114 case '1': if (nsub < 1) nsub = 1; break;
115 case '2': if (nsub < 2) nsub = 2; break;
116 case '3': if (nsub < 3) nsub = 3; break;
117 case '4': if (nsub < 4) nsub = 4; break;
118 case '5': if (nsub < 5) nsub = 5; break;
119 case '6': if (nsub < 6) nsub = 6; break;
120 case '7': if (nsub < 7) nsub = 7; break;
121 case '8': if (nsub < 8) nsub = 8; break;
122 case '9': if (nsub < 9) nsub = 9; break;
132 return (DNS_R_SYNTAX);
135 if (regcomp(&preg, regex, regflags))
136 return (DNS_R_SYNTAX);
138 * Check that substitutions in the replacement string are consistant
139 * with the regular expression.
141 if (preg.re_nsub < nsub) {
143 return (DNS_R_SYNTAX);
147 return (ISC_R_SUCCESS);
150 static inline isc_result_t
151 fromtext_in_naptr(ARGS_FROMTEXT) {
155 unsigned char *regex;
158 REQUIRE(rdclass == 1);
167 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
169 if (token.value.as_ulong > 0xffffU)
171 RETERR(uint16_tobuffer(token.value.as_ulong, target));
176 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
178 if (token.value.as_ulong > 0xffffU)
180 RETERR(uint16_tobuffer(token.value.as_ulong, target));
185 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
187 RETTOK(txt_fromtext(&token.value.as_textregion, target));
192 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
194 RETTOK(txt_fromtext(&token.value.as_textregion, target));
199 regex = isc_buffer_used(target);
200 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
202 RETTOK(txt_fromtext(&token.value.as_textregion, target));
203 RETTOK(txt_valid_regex(regex));
208 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
210 dns_name_init(&name, NULL);
211 buffer_fromregion(&buffer, &token.value.as_region);
212 origin = (origin != NULL) ? origin : dns_rootname;
213 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
214 return (ISC_R_SUCCESS);
217 static inline isc_result_t
218 totext_in_naptr(ARGS_TOTEXT) {
223 char buf[sizeof("64000")];
226 REQUIRE(rdata->type == 35);
227 REQUIRE(rdata->rdclass == 1);
228 REQUIRE(rdata->length != 0);
230 dns_name_init(&name, NULL);
231 dns_name_init(&prefix, NULL);
233 dns_rdata_toregion(rdata, ®ion);
238 num = uint16_fromregion(®ion);
239 isc_region_consume(®ion, 2);
240 sprintf(buf, "%u", num);
241 RETERR(str_totext(buf, target));
242 RETERR(str_totext(" ", target));
247 num = uint16_fromregion(®ion);
248 isc_region_consume(®ion, 2);
249 sprintf(buf, "%u", num);
250 RETERR(str_totext(buf, target));
251 RETERR(str_totext(" ", target));
256 RETERR(txt_totext(®ion, target));
257 RETERR(str_totext(" ", target));
262 RETERR(txt_totext(®ion, target));
263 RETERR(str_totext(" ", target));
268 RETERR(txt_totext(®ion, target));
269 RETERR(str_totext(" ", target));
274 dns_name_fromregion(&name, ®ion);
275 sub = name_prefix(&name, tctx->origin, &prefix);
276 return (dns_name_totext(&prefix, sub, target));
279 static inline isc_result_t
280 fromwire_in_naptr(ARGS_FROMWIRE) {
283 unsigned char *regex;
286 REQUIRE(rdclass == 1);
291 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
293 dns_name_init(&name, NULL);
298 isc_buffer_activeregion(source, &sr);
300 return (ISC_R_UNEXPECTEDEND);
301 RETERR(mem_tobuffer(target, sr.base, 4));
302 isc_buffer_forward(source, 4);
307 RETERR(txt_fromwire(source, target));
312 RETERR(txt_fromwire(source, target));
317 regex = isc_buffer_used(target);
318 RETERR(txt_fromwire(source, target));
319 RETERR(txt_valid_regex(regex));
324 return (dns_name_fromwire(&name, source, dctx, options, target));
327 static inline isc_result_t
328 towire_in_naptr(ARGS_TOWIRE) {
330 dns_offsets_t offsets;
333 REQUIRE(rdata->type == 35);
334 REQUIRE(rdata->rdclass == 1);
335 REQUIRE(rdata->length != 0);
337 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
341 dns_rdata_toregion(rdata, &sr);
342 RETERR(mem_tobuffer(target, sr.base, 4));
343 isc_region_consume(&sr, 4);
348 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
349 isc_region_consume(&sr, sr.base[0] + 1);
354 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
355 isc_region_consume(&sr, sr.base[0] + 1);
360 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
361 isc_region_consume(&sr, sr.base[0] + 1);
366 dns_name_init(&name, offsets);
367 dns_name_fromregion(&name, &sr);
368 return (dns_name_towire(&name, cctx, target));
372 compare_in_naptr(ARGS_COMPARE) {
375 isc_region_t region1;
376 isc_region_t region2;
379 REQUIRE(rdata1->type == rdata2->type);
380 REQUIRE(rdata1->rdclass == rdata2->rdclass);
381 REQUIRE(rdata1->type == 35);
382 REQUIRE(rdata1->rdclass == 1);
383 REQUIRE(rdata1->length != 0);
384 REQUIRE(rdata2->length != 0);
386 dns_rdata_toregion(rdata1, ®ion1);
387 dns_rdata_toregion(rdata2, ®ion2);
392 order = memcmp(region1.base, region2.base, 4);
394 return (order < 0 ? -1 : 1);
395 isc_region_consume(®ion1, 4);
396 isc_region_consume(®ion2, 4);
401 len = ISC_MIN(region1.base[0], region2.base[0]);
402 order = memcmp(region1.base, region2.base, len + 1);
404 return (order < 0 ? -1 : 1);
405 isc_region_consume(®ion1, region1.base[0] + 1);
406 isc_region_consume(®ion2, region2.base[0] + 1);
411 len = ISC_MIN(region1.base[0], region2.base[0]);
412 order = memcmp(region1.base, region2.base, len + 1);
414 return (order < 0 ? -1 : 1);
415 isc_region_consume(®ion1, region1.base[0] + 1);
416 isc_region_consume(®ion2, region2.base[0] + 1);
421 len = ISC_MIN(region1.base[0], region2.base[0]);
422 order = memcmp(region1.base, region2.base, len + 1);
424 return (order < 0 ? -1 : 1);
425 isc_region_consume(®ion1, region1.base[0] + 1);
426 isc_region_consume(®ion2, region2.base[0] + 1);
431 dns_name_init(&name1, NULL);
432 dns_name_init(&name2, NULL);
434 dns_name_fromregion(&name1, ®ion1);
435 dns_name_fromregion(&name2, ®ion2);
437 return (dns_name_rdatacompare(&name1, &name2));
440 static inline isc_result_t
441 fromstruct_in_naptr(ARGS_FROMSTRUCT) {
442 dns_rdata_in_naptr_t *naptr = source;
446 REQUIRE(rdclass == 1);
447 REQUIRE(source != NULL);
448 REQUIRE(naptr->common.rdtype == type);
449 REQUIRE(naptr->common.rdclass == rdclass);
450 REQUIRE(naptr->flags != NULL || naptr->flags_len == 0);
451 REQUIRE(naptr->service != NULL || naptr->service_len == 0);
452 REQUIRE(naptr->regexp != NULL || naptr->regexp_len == 0);
457 RETERR(uint16_tobuffer(naptr->order, target));
458 RETERR(uint16_tobuffer(naptr->preference, target));
459 RETERR(uint8_tobuffer(naptr->flags_len, target));
460 RETERR(mem_tobuffer(target, naptr->flags, naptr->flags_len));
461 RETERR(uint8_tobuffer(naptr->service_len, target));
462 RETERR(mem_tobuffer(target, naptr->service, naptr->service_len));
463 RETERR(uint8_tobuffer(naptr->regexp_len, target));
464 RETERR(mem_tobuffer(target, naptr->regexp, naptr->regexp_len));
465 dns_name_toregion(&naptr->replacement, ®ion);
466 return (isc_buffer_copyregion(target, ®ion));
469 static inline isc_result_t
470 tostruct_in_naptr(ARGS_TOSTRUCT) {
471 dns_rdata_in_naptr_t *naptr = target;
476 REQUIRE(rdata->type == 35);
477 REQUIRE(rdata->rdclass == 1);
478 REQUIRE(target != NULL);
479 REQUIRE(rdata->length != 0);
481 naptr->common.rdclass = rdata->rdclass;
482 naptr->common.rdtype = rdata->type;
483 ISC_LINK_INIT(&naptr->common, link);
486 naptr->service = NULL;
487 naptr->regexp = NULL;
489 dns_rdata_toregion(rdata, &r);
491 naptr->order = uint16_fromregion(&r);
492 isc_region_consume(&r, 2);
494 naptr->preference = uint16_fromregion(&r);
495 isc_region_consume(&r, 2);
497 naptr->flags_len = uint8_fromregion(&r);
498 isc_region_consume(&r, 1);
499 INSIST(naptr->flags_len <= r.length);
500 naptr->flags = mem_maybedup(mctx, r.base, naptr->flags_len);
501 if (naptr->flags == NULL)
503 isc_region_consume(&r, naptr->flags_len);
505 naptr->service_len = uint8_fromregion(&r);
506 isc_region_consume(&r, 1);
507 INSIST(naptr->service_len <= r.length);
508 naptr->service = mem_maybedup(mctx, r.base, naptr->service_len);
509 if (naptr->service == NULL)
511 isc_region_consume(&r, naptr->service_len);
513 naptr->regexp_len = uint8_fromregion(&r);
514 isc_region_consume(&r, 1);
515 INSIST(naptr->regexp_len <= r.length);
516 naptr->regexp = mem_maybedup(mctx, r.base, naptr->regexp_len);
517 if (naptr->regexp == NULL)
519 isc_region_consume(&r, naptr->regexp_len);
521 dns_name_init(&name, NULL);
522 dns_name_fromregion(&name, &r);
523 dns_name_init(&naptr->replacement, NULL);
524 result = name_duporclone(&name, mctx, &naptr->replacement);
525 if (result != ISC_R_SUCCESS)
528 return (ISC_R_SUCCESS);
531 if (mctx != NULL && naptr->flags != NULL)
532 isc_mem_free(mctx, naptr->flags);
533 if (mctx != NULL && naptr->service != NULL)
534 isc_mem_free(mctx, naptr->service);
535 if (mctx != NULL && naptr->regexp != NULL)
536 isc_mem_free(mctx, naptr->regexp);
537 return (ISC_R_NOMEMORY);
541 freestruct_in_naptr(ARGS_FREESTRUCT) {
542 dns_rdata_in_naptr_t *naptr = source;
544 REQUIRE(source != NULL);
545 REQUIRE(naptr->common.rdclass == 1);
546 REQUIRE(naptr->common.rdtype == 35);
548 if (naptr->mctx == NULL)
551 if (naptr->flags != NULL)
552 isc_mem_free(naptr->mctx, naptr->flags);
553 if (naptr->service != NULL)
554 isc_mem_free(naptr->mctx, naptr->service);
555 if (naptr->regexp != NULL)
556 isc_mem_free(naptr->mctx, naptr->regexp);
557 dns_name_free(&naptr->replacement, naptr->mctx);
561 static inline isc_result_t
562 additionaldata_in_naptr(ARGS_ADDLDATA) {
564 dns_offsets_t offsets;
566 dns_rdatatype_t atype;
567 unsigned int i, flagslen;
570 REQUIRE(rdata->type == 35);
571 REQUIRE(rdata->rdclass == 1);
576 dns_rdata_toregion(rdata, &sr);
577 isc_region_consume(&sr, 4);
583 flagslen = sr.base[0];
584 cp = (char *)&sr.base[1];
585 for (i = 0; i < flagslen; i++, cp++) {
586 if (*cp == 'S' || *cp == 's') {
587 atype = dns_rdatatype_srv;
590 if (*cp == 'A' || *cp == 'a') {
591 atype = dns_rdatatype_a;
595 isc_region_consume(&sr, flagslen + 1);
600 isc_region_consume(&sr, sr.base[0] + 1);
605 isc_region_consume(&sr, sr.base[0] + 1);
610 dns_name_init(&name, offsets);
611 dns_name_fromregion(&name, &sr);
614 return ((add)(arg, &name, atype));
616 return (ISC_R_SUCCESS);
619 static inline isc_result_t
620 digest_in_naptr(ARGS_DIGEST) {
622 unsigned int length, n;
626 REQUIRE(rdata->type == 35);
627 REQUIRE(rdata->rdclass == 1);
629 dns_rdata_toregion(rdata, &r1);
637 isc_region_consume(&r2, 4);
644 isc_region_consume(&r2, n);
651 isc_region_consume(&r2, n);
658 isc_region_consume(&r2, n);
661 * Digest the RR up to the replacement name.
664 result = (digest)(arg, &r1);
665 if (result != ISC_R_SUCCESS)
672 dns_name_init(&name, NULL);
673 dns_name_fromregion(&name, &r2);
675 return (dns_name_digest(&name, digest, arg));
678 static inline isc_boolean_t
679 checkowner_in_naptr(ARGS_CHECKOWNER) {
682 REQUIRE(rdclass == 1);
692 static inline isc_boolean_t
693 checknames_in_naptr(ARGS_CHECKNAMES) {
695 REQUIRE(rdata->type == 35);
696 REQUIRE(rdata->rdclass == 1);
706 casecompare_in_naptr(ARGS_COMPARE) {
707 return (compare_in_naptr(rdata1, rdata2));
710 #endif /* RDATA_IN_1_NAPTR_35_C */