2 * Copyright (C) 2004, 2005, 2007-2009, 2012, 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_IN_1_NAPTR_35_C
25 #define RDATA_IN_1_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_in_naptr(ARGS_FROMTEXT) {
128 unsigned char *regex;
131 REQUIRE(rdclass == 1);
140 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
142 if (token.value.as_ulong > 0xffffU)
144 RETERR(uint16_tobuffer(token.value.as_ulong, target));
149 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
151 if (token.value.as_ulong > 0xffffU)
153 RETERR(uint16_tobuffer(token.value.as_ulong, target));
158 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
160 RETTOK(txt_fromtext(&token.value.as_textregion, target));
165 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
167 RETTOK(txt_fromtext(&token.value.as_textregion, target));
172 regex = isc_buffer_used(target);
173 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
175 RETTOK(txt_fromtext(&token.value.as_textregion, target));
176 RETTOK(txt_valid_regex(regex));
181 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
183 dns_name_init(&name, NULL);
184 buffer_fromregion(&buffer, &token.value.as_region);
185 origin = (origin != NULL) ? origin : dns_rootname;
186 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
187 return (ISC_R_SUCCESS);
190 static inline isc_result_t
191 totext_in_naptr(ARGS_TOTEXT) {
196 char buf[sizeof("64000")];
199 REQUIRE(rdata->type == 35);
200 REQUIRE(rdata->rdclass == 1);
201 REQUIRE(rdata->length != 0);
203 dns_name_init(&name, NULL);
204 dns_name_init(&prefix, NULL);
206 dns_rdata_toregion(rdata, ®ion);
211 num = uint16_fromregion(®ion);
212 isc_region_consume(®ion, 2);
213 sprintf(buf, "%u", num);
214 RETERR(str_totext(buf, target));
215 RETERR(str_totext(" ", target));
220 num = uint16_fromregion(®ion);
221 isc_region_consume(®ion, 2);
222 sprintf(buf, "%u", num);
223 RETERR(str_totext(buf, target));
224 RETERR(str_totext(" ", target));
229 RETERR(txt_totext(®ion, target));
230 RETERR(str_totext(" ", target));
235 RETERR(txt_totext(®ion, target));
236 RETERR(str_totext(" ", target));
241 RETERR(txt_totext(®ion, target));
242 RETERR(str_totext(" ", target));
247 dns_name_fromregion(&name, ®ion);
248 sub = name_prefix(&name, tctx->origin, &prefix);
249 return (dns_name_totext(&prefix, sub, target));
252 static inline isc_result_t
253 fromwire_in_naptr(ARGS_FROMWIRE) {
256 unsigned char *regex;
259 REQUIRE(rdclass == 1);
264 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
266 dns_name_init(&name, NULL);
271 isc_buffer_activeregion(source, &sr);
273 return (ISC_R_UNEXPECTEDEND);
274 RETERR(mem_tobuffer(target, sr.base, 4));
275 isc_buffer_forward(source, 4);
280 RETERR(txt_fromwire(source, target));
285 RETERR(txt_fromwire(source, target));
290 regex = isc_buffer_used(target);
291 RETERR(txt_fromwire(source, target));
292 RETERR(txt_valid_regex(regex));
297 return (dns_name_fromwire(&name, source, dctx, options, target));
300 static inline isc_result_t
301 towire_in_naptr(ARGS_TOWIRE) {
303 dns_offsets_t offsets;
306 REQUIRE(rdata->type == 35);
307 REQUIRE(rdata->rdclass == 1);
308 REQUIRE(rdata->length != 0);
310 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
314 dns_rdata_toregion(rdata, &sr);
315 RETERR(mem_tobuffer(target, sr.base, 4));
316 isc_region_consume(&sr, 4);
321 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
322 isc_region_consume(&sr, sr.base[0] + 1);
327 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
328 isc_region_consume(&sr, sr.base[0] + 1);
333 RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
334 isc_region_consume(&sr, sr.base[0] + 1);
339 dns_name_init(&name, offsets);
340 dns_name_fromregion(&name, &sr);
341 return (dns_name_towire(&name, cctx, target));
345 compare_in_naptr(ARGS_COMPARE) {
348 isc_region_t region1;
349 isc_region_t region2;
352 REQUIRE(rdata1->type == rdata2->type);
353 REQUIRE(rdata1->rdclass == rdata2->rdclass);
354 REQUIRE(rdata1->type == 35);
355 REQUIRE(rdata1->rdclass == 1);
356 REQUIRE(rdata1->length != 0);
357 REQUIRE(rdata2->length != 0);
359 dns_rdata_toregion(rdata1, ®ion1);
360 dns_rdata_toregion(rdata2, ®ion2);
365 order = memcmp(region1.base, region2.base, 4);
367 return (order < 0 ? -1 : 1);
368 isc_region_consume(®ion1, 4);
369 isc_region_consume(®ion2, 4);
374 len = ISC_MIN(region1.base[0], region2.base[0]);
375 order = memcmp(region1.base, region2.base, len + 1);
377 return (order < 0 ? -1 : 1);
378 isc_region_consume(®ion1, region1.base[0] + 1);
379 isc_region_consume(®ion2, region2.base[0] + 1);
384 len = ISC_MIN(region1.base[0], region2.base[0]);
385 order = memcmp(region1.base, region2.base, len + 1);
387 return (order < 0 ? -1 : 1);
388 isc_region_consume(®ion1, region1.base[0] + 1);
389 isc_region_consume(®ion2, region2.base[0] + 1);
394 len = ISC_MIN(region1.base[0], region2.base[0]);
395 order = memcmp(region1.base, region2.base, len + 1);
397 return (order < 0 ? -1 : 1);
398 isc_region_consume(®ion1, region1.base[0] + 1);
399 isc_region_consume(®ion2, region2.base[0] + 1);
404 dns_name_init(&name1, NULL);
405 dns_name_init(&name2, NULL);
407 dns_name_fromregion(&name1, ®ion1);
408 dns_name_fromregion(&name2, ®ion2);
410 return (dns_name_rdatacompare(&name1, &name2));
413 static inline isc_result_t
414 fromstruct_in_naptr(ARGS_FROMSTRUCT) {
415 dns_rdata_in_naptr_t *naptr = source;
419 REQUIRE(rdclass == 1);
420 REQUIRE(source != NULL);
421 REQUIRE(naptr->common.rdtype == type);
422 REQUIRE(naptr->common.rdclass == rdclass);
423 REQUIRE(naptr->flags != NULL || naptr->flags_len == 0);
424 REQUIRE(naptr->service != NULL || naptr->service_len == 0);
425 REQUIRE(naptr->regexp != NULL || naptr->regexp_len == 0);
430 RETERR(uint16_tobuffer(naptr->order, target));
431 RETERR(uint16_tobuffer(naptr->preference, target));
432 RETERR(uint8_tobuffer(naptr->flags_len, target));
433 RETERR(mem_tobuffer(target, naptr->flags, naptr->flags_len));
434 RETERR(uint8_tobuffer(naptr->service_len, target));
435 RETERR(mem_tobuffer(target, naptr->service, naptr->service_len));
436 RETERR(uint8_tobuffer(naptr->regexp_len, target));
437 RETERR(mem_tobuffer(target, naptr->regexp, naptr->regexp_len));
438 dns_name_toregion(&naptr->replacement, ®ion);
439 return (isc_buffer_copyregion(target, ®ion));
442 static inline isc_result_t
443 tostruct_in_naptr(ARGS_TOSTRUCT) {
444 dns_rdata_in_naptr_t *naptr = target;
449 REQUIRE(rdata->type == 35);
450 REQUIRE(rdata->rdclass == 1);
451 REQUIRE(target != NULL);
452 REQUIRE(rdata->length != 0);
454 naptr->common.rdclass = rdata->rdclass;
455 naptr->common.rdtype = rdata->type;
456 ISC_LINK_INIT(&naptr->common, link);
459 naptr->service = NULL;
460 naptr->regexp = NULL;
462 dns_rdata_toregion(rdata, &r);
464 naptr->order = uint16_fromregion(&r);
465 isc_region_consume(&r, 2);
467 naptr->preference = uint16_fromregion(&r);
468 isc_region_consume(&r, 2);
470 naptr->flags_len = uint8_fromregion(&r);
471 isc_region_consume(&r, 1);
472 INSIST(naptr->flags_len <= r.length);
473 naptr->flags = mem_maybedup(mctx, r.base, naptr->flags_len);
474 if (naptr->flags == NULL)
476 isc_region_consume(&r, naptr->flags_len);
478 naptr->service_len = uint8_fromregion(&r);
479 isc_region_consume(&r, 1);
480 INSIST(naptr->service_len <= r.length);
481 naptr->service = mem_maybedup(mctx, r.base, naptr->service_len);
482 if (naptr->service == NULL)
484 isc_region_consume(&r, naptr->service_len);
486 naptr->regexp_len = uint8_fromregion(&r);
487 isc_region_consume(&r, 1);
488 INSIST(naptr->regexp_len <= r.length);
489 naptr->regexp = mem_maybedup(mctx, r.base, naptr->regexp_len);
490 if (naptr->regexp == NULL)
492 isc_region_consume(&r, naptr->regexp_len);
494 dns_name_init(&name, NULL);
495 dns_name_fromregion(&name, &r);
496 dns_name_init(&naptr->replacement, NULL);
497 result = name_duporclone(&name, mctx, &naptr->replacement);
498 if (result != ISC_R_SUCCESS)
501 return (ISC_R_SUCCESS);
504 if (mctx != NULL && naptr->flags != NULL)
505 isc_mem_free(mctx, naptr->flags);
506 if (mctx != NULL && naptr->service != NULL)
507 isc_mem_free(mctx, naptr->service);
508 if (mctx != NULL && naptr->regexp != NULL)
509 isc_mem_free(mctx, naptr->regexp);
510 return (ISC_R_NOMEMORY);
514 freestruct_in_naptr(ARGS_FREESTRUCT) {
515 dns_rdata_in_naptr_t *naptr = source;
517 REQUIRE(source != NULL);
518 REQUIRE(naptr->common.rdclass == 1);
519 REQUIRE(naptr->common.rdtype == 35);
521 if (naptr->mctx == NULL)
524 if (naptr->flags != NULL)
525 isc_mem_free(naptr->mctx, naptr->flags);
526 if (naptr->service != NULL)
527 isc_mem_free(naptr->mctx, naptr->service);
528 if (naptr->regexp != NULL)
529 isc_mem_free(naptr->mctx, naptr->regexp);
530 dns_name_free(&naptr->replacement, naptr->mctx);
534 static inline isc_result_t
535 additionaldata_in_naptr(ARGS_ADDLDATA) {
537 dns_offsets_t offsets;
539 dns_rdatatype_t atype;
540 unsigned int i, flagslen;
543 REQUIRE(rdata->type == 35);
544 REQUIRE(rdata->rdclass == 1);
549 dns_rdata_toregion(rdata, &sr);
550 isc_region_consume(&sr, 4);
556 flagslen = sr.base[0];
557 cp = (char *)&sr.base[1];
558 for (i = 0; i < flagslen; i++, cp++) {
559 if (*cp == 'S' || *cp == 's') {
560 atype = dns_rdatatype_srv;
563 if (*cp == 'A' || *cp == 'a') {
564 atype = dns_rdatatype_a;
568 isc_region_consume(&sr, flagslen + 1);
573 isc_region_consume(&sr, sr.base[0] + 1);
578 isc_region_consume(&sr, sr.base[0] + 1);
583 dns_name_init(&name, offsets);
584 dns_name_fromregion(&name, &sr);
587 return ((add)(arg, &name, atype));
589 return (ISC_R_SUCCESS);
592 static inline isc_result_t
593 digest_in_naptr(ARGS_DIGEST) {
595 unsigned int length, n;
599 REQUIRE(rdata->type == 35);
600 REQUIRE(rdata->rdclass == 1);
602 dns_rdata_toregion(rdata, &r1);
610 isc_region_consume(&r2, 4);
617 isc_region_consume(&r2, n);
624 isc_region_consume(&r2, n);
631 isc_region_consume(&r2, n);
634 * Digest the RR up to the replacement name.
637 result = (digest)(arg, &r1);
638 if (result != ISC_R_SUCCESS)
645 dns_name_init(&name, NULL);
646 dns_name_fromregion(&name, &r2);
648 return (dns_name_digest(&name, digest, arg));
651 static inline isc_boolean_t
652 checkowner_in_naptr(ARGS_CHECKOWNER) {
655 REQUIRE(rdclass == 1);
665 static inline isc_boolean_t
666 checknames_in_naptr(ARGS_CHECKNAMES) {
668 REQUIRE(rdata->type == 35);
669 REQUIRE(rdata->rdclass == 1);
679 casecompare_in_naptr(ARGS_COMPARE) {
680 return (compare_in_naptr(rdata1, rdata2));
683 #endif /* RDATA_IN_1_NAPTR_35_C */