552 lines
12 KiB
C
552 lines
12 KiB
C
/*
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* Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: naptr_35.c,v 1.45 2003/07/25 00:01:10 marka Exp $ */
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/* Reviewed: Thu Mar 16 16:52:50 PST 2000 by bwelling */
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/* RFC 2915 */
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#ifndef RDATA_IN_1_NAPTR_35_C
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#define RDATA_IN_1_NAPTR_35_C
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#define RRTYPE_NAPTR_ATTRIBUTES (0)
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static inline isc_result_t
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fromtext_in_naptr(ARGS_FROMTEXT) {
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isc_token_t token;
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dns_name_t name;
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isc_buffer_t buffer;
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REQUIRE(type == 35);
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REQUIRE(rdclass == 1);
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UNUSED(type);
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UNUSED(rdclass);
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UNUSED(callbacks);
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/*
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* Order.
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*/
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RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
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ISC_FALSE));
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if (token.value.as_ulong > 0xffffU)
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RETTOK(ISC_R_RANGE);
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RETERR(uint16_tobuffer(token.value.as_ulong, target));
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/*
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* Preference.
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*/
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RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
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ISC_FALSE));
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if (token.value.as_ulong > 0xffffU)
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RETTOK(ISC_R_RANGE);
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RETERR(uint16_tobuffer(token.value.as_ulong, target));
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/*
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* Flags.
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*/
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RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
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ISC_FALSE));
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RETTOK(txt_fromtext(&token.value.as_textregion, target));
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/*
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* Service.
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*/
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RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
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ISC_FALSE));
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RETTOK(txt_fromtext(&token.value.as_textregion, target));
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/*
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* Regexp.
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*/
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RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
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ISC_FALSE));
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RETTOK(txt_fromtext(&token.value.as_textregion, target));
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/*
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* Replacement.
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*/
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RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
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ISC_FALSE));
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dns_name_init(&name, NULL);
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buffer_fromregion(&buffer, &token.value.as_region);
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origin = (origin != NULL) ? origin : dns_rootname;
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RETTOK(dns_name_fromtext(&name, &buffer, origin, downcase, target));
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return (ISC_R_SUCCESS);
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}
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static inline isc_result_t
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totext_in_naptr(ARGS_TOTEXT) {
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isc_region_t region;
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dns_name_t name;
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dns_name_t prefix;
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isc_boolean_t sub;
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char buf[sizeof("64000")];
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unsigned short num;
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REQUIRE(rdata->type == 35);
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REQUIRE(rdata->rdclass == 1);
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REQUIRE(rdata->length != 0);
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dns_name_init(&name, NULL);
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dns_name_init(&prefix, NULL);
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dns_rdata_toregion(rdata, ®ion);
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/*
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* Order.
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*/
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num = uint16_fromregion(®ion);
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isc_region_consume(®ion, 2);
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sprintf(buf, "%u", num);
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RETERR(str_totext(buf, target));
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RETERR(str_totext(" ", target));
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/*
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* Preference.
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*/
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num = uint16_fromregion(®ion);
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isc_region_consume(®ion, 2);
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sprintf(buf, "%u", num);
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RETERR(str_totext(buf, target));
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RETERR(str_totext(" ", target));
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/*
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* Flags.
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*/
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RETERR(txt_totext(®ion, target));
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RETERR(str_totext(" ", target));
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/*
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* Service.
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*/
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RETERR(txt_totext(®ion, target));
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RETERR(str_totext(" ", target));
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/*
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* Regexp.
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*/
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RETERR(txt_totext(®ion, target));
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RETERR(str_totext(" ", target));
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/*
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* Replacement.
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*/
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dns_name_fromregion(&name, ®ion);
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sub = name_prefix(&name, tctx->origin, &prefix);
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return (dns_name_totext(&prefix, sub, target));
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}
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static inline isc_result_t
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fromwire_in_naptr(ARGS_FROMWIRE) {
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dns_name_t name;
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isc_region_t sr;
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REQUIRE(type == 35);
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REQUIRE(rdclass == 1);
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UNUSED(type);
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UNUSED(rdclass);
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dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
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dns_name_init(&name, NULL);
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/*
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* Order, preference.
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*/
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isc_buffer_activeregion(source, &sr);
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if (sr.length < 4)
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return (ISC_R_UNEXPECTEDEND);
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RETERR(mem_tobuffer(target, sr.base, 4));
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isc_buffer_forward(source, 4);
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/*
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* Flags.
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*/
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RETERR(txt_fromwire(source, target));
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/*
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* Service.
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*/
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RETERR(txt_fromwire(source, target));
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/*
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* Regexp.
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*/
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RETERR(txt_fromwire(source, target));
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/*
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* Replacement.
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*/
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return (dns_name_fromwire(&name, source, dctx, downcase, target));
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}
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static inline isc_result_t
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towire_in_naptr(ARGS_TOWIRE) {
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dns_name_t name;
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dns_offsets_t offsets;
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isc_region_t sr;
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REQUIRE(rdata->type == 35);
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REQUIRE(rdata->rdclass == 1);
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REQUIRE(rdata->length != 0);
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dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
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/*
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* Order, preference.
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*/
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dns_rdata_toregion(rdata, &sr);
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RETERR(mem_tobuffer(target, sr.base, 4));
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isc_region_consume(&sr, 4);
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/*
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* Flags.
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*/
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RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
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isc_region_consume(&sr, sr.base[0] + 1);
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/*
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* Service.
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*/
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RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
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isc_region_consume(&sr, sr.base[0] + 1);
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/*
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* Regexp.
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*/
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RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
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isc_region_consume(&sr, sr.base[0] + 1);
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/*
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* Replacement.
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*/
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dns_name_init(&name, offsets);
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dns_name_fromregion(&name, &sr);
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return (dns_name_towire(&name, cctx, target));
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}
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static inline int
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compare_in_naptr(ARGS_COMPARE) {
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dns_name_t name1;
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dns_name_t name2;
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isc_region_t region1;
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isc_region_t region2;
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int order, len;
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REQUIRE(rdata1->type == rdata2->type);
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REQUIRE(rdata1->rdclass == rdata2->rdclass);
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REQUIRE(rdata1->type == 35);
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REQUIRE(rdata1->rdclass == 1);
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REQUIRE(rdata1->length != 0);
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REQUIRE(rdata2->length != 0);
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dns_rdata_toregion(rdata1, ®ion1);
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dns_rdata_toregion(rdata2, ®ion2);
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/*
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* Order, preference.
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*/
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order = memcmp(region1.base, region2.base, 4);
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if (order != 0)
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return (order < 0 ? -1 : 1);
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isc_region_consume(®ion1, 4);
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isc_region_consume(®ion2, 4);
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/*
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* Flags.
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*/
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len = ISC_MIN(region1.base[0], region2.base[0]);
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order = memcmp(region1.base, region2.base, len + 1);
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if (order != 0)
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return (order < 0 ? -1 : 1);
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isc_region_consume(®ion1, region1.base[0] + 1);
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isc_region_consume(®ion2, region2.base[0] + 1);
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/*
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* Service.
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*/
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len = ISC_MIN(region1.base[0], region2.base[0]);
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order = memcmp(region1.base, region2.base, len + 1);
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if (order != 0)
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return (order < 0 ? -1 : 1);
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isc_region_consume(®ion1, region1.base[0] + 1);
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isc_region_consume(®ion2, region2.base[0] + 1);
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/*
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* Regexp.
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*/
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len = ISC_MIN(region1.base[0], region2.base[0]);
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order = memcmp(region1.base, region2.base, len + 1);
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if (order != 0)
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return (order < 0 ? -1 : 1);
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isc_region_consume(®ion1, region1.base[0] + 1);
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isc_region_consume(®ion2, region2.base[0] + 1);
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/*
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* Replacement.
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*/
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dns_name_init(&name1, NULL);
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dns_name_init(&name2, NULL);
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dns_name_fromregion(&name1, ®ion1);
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dns_name_fromregion(&name2, ®ion2);
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return (dns_name_rdatacompare(&name1, &name2));
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}
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static inline isc_result_t
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fromstruct_in_naptr(ARGS_FROMSTRUCT) {
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dns_rdata_in_naptr_t *naptr = source;
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isc_region_t region;
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REQUIRE(type == 35);
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REQUIRE(rdclass == 1);
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REQUIRE(source != NULL);
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REQUIRE(naptr->common.rdtype == type);
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REQUIRE(naptr->common.rdclass == rdclass);
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REQUIRE(naptr->flags != NULL || naptr->flags_len == 0);
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REQUIRE(naptr->service != NULL && naptr->service_len == 0);
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REQUIRE(naptr->regexp != NULL && naptr->regexp_len == 0);
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UNUSED(type);
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UNUSED(rdclass);
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RETERR(uint16_tobuffer(naptr->order, target));
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RETERR(uint16_tobuffer(naptr->preference, target));
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RETERR(uint8_tobuffer(naptr->flags_len, target));
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RETERR(mem_tobuffer(target, naptr->flags, naptr->flags_len));
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RETERR(uint8_tobuffer(naptr->service_len, target));
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RETERR(mem_tobuffer(target, naptr->service, naptr->service_len));
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RETERR(uint8_tobuffer(naptr->regexp_len, target));
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RETERR(mem_tobuffer(target, naptr->regexp, naptr->regexp_len));
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dns_name_toregion(&naptr->replacement, ®ion);
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return (isc_buffer_copyregion(target, ®ion));
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}
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static inline isc_result_t
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tostruct_in_naptr(ARGS_TOSTRUCT) {
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dns_rdata_in_naptr_t *naptr = target;
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isc_region_t r;
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isc_result_t result;
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dns_name_t name;
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REQUIRE(rdata->type == 35);
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REQUIRE(rdata->rdclass == 1);
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REQUIRE(target != NULL);
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REQUIRE(rdata->length != 0);
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naptr->common.rdclass = rdata->rdclass;
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naptr->common.rdtype = rdata->type;
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ISC_LINK_INIT(&naptr->common, link);
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naptr->flags = NULL;
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naptr->service = NULL;
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naptr->regexp = NULL;
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dns_rdata_toregion(rdata, &r);
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naptr->order = uint16_fromregion(&r);
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isc_region_consume(&r, 2);
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naptr->preference = uint16_fromregion(&r);
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isc_region_consume(&r, 2);
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naptr->flags_len = uint8_fromregion(&r);
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isc_region_consume(&r, 1);
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INSIST(naptr->flags_len <= r.length);
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naptr->flags = mem_maybedup(mctx, r.base, naptr->flags_len);
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if (naptr->flags == NULL)
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goto cleanup;
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isc_region_consume(&r, naptr->flags_len);
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naptr->service_len = uint8_fromregion(&r);
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isc_region_consume(&r, 1);
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INSIST(naptr->service_len <= r.length);
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naptr->service = mem_maybedup(mctx, r.base, naptr->service_len);
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if (naptr->service == NULL)
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goto cleanup;
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isc_region_consume(&r, naptr->service_len);
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naptr->regexp_len = uint8_fromregion(&r);
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isc_region_consume(&r, 1);
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INSIST(naptr->regexp_len <= r.length);
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naptr->regexp = mem_maybedup(mctx, r.base, naptr->regexp_len);
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if (naptr->regexp == NULL)
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goto cleanup;
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isc_region_consume(&r, naptr->regexp_len);
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dns_name_init(&name, NULL);
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dns_name_fromregion(&name, &r);
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dns_name_init(&naptr->replacement, NULL);
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result = name_duporclone(&name, mctx, &naptr->replacement);
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if (result != ISC_R_SUCCESS)
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goto cleanup;
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naptr->mctx = mctx;
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return (ISC_R_SUCCESS);
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cleanup:
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if (mctx != NULL && naptr->flags != NULL)
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isc_mem_free(mctx, naptr->flags);
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if (mctx != NULL && naptr->service != NULL)
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isc_mem_free(mctx, naptr->service);
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if (mctx != NULL && naptr->regexp != NULL)
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isc_mem_free(mctx, naptr->regexp);
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return (ISC_R_NOMEMORY);
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}
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static inline void
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freestruct_in_naptr(ARGS_FREESTRUCT) {
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dns_rdata_in_naptr_t *naptr = source;
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REQUIRE(source != NULL);
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REQUIRE(naptr->common.rdclass == 1);
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REQUIRE(naptr->common.rdtype == 35);
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if (naptr->mctx == NULL)
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return;
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if (naptr->flags != NULL)
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isc_mem_free(naptr->mctx, naptr->flags);
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if (naptr->service != NULL)
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isc_mem_free(naptr->mctx, naptr->service);
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if (naptr->regexp != NULL)
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isc_mem_free(naptr->mctx, naptr->regexp);
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dns_name_free(&naptr->replacement, naptr->mctx);
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naptr->mctx = NULL;
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}
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static inline isc_result_t
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additionaldata_in_naptr(ARGS_ADDLDATA) {
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dns_name_t name;
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dns_offsets_t offsets;
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isc_region_t sr;
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dns_rdatatype_t atype;
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unsigned int i, flagslen;
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char *cp;
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REQUIRE(rdata->type == 35);
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REQUIRE(rdata->rdclass == 1);
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/*
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* Order, preference.
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*/
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dns_rdata_toregion(rdata, &sr);
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isc_region_consume(&sr, 4);
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/*
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* Flags.
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*/
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atype = 0;
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flagslen = sr.base[0];
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cp = (char *)&sr.base[1];
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for (i = 0; i < flagslen; i++, cp++) {
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if (*cp == 'S' || *cp == 's') {
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atype = dns_rdatatype_srv;
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break;
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}
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if (*cp == 'A' || *cp == 'a') {
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atype = dns_rdatatype_a;
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break;
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}
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}
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isc_region_consume(&sr, flagslen + 1);
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/*
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* Service.
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*/
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isc_region_consume(&sr, sr.base[0] + 1);
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/*
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* Regexp.
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*/
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isc_region_consume(&sr, sr.base[0] + 1);
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/*
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* Replacement.
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*/
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dns_name_init(&name, offsets);
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dns_name_fromregion(&name, &sr);
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if (atype != 0)
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return ((add)(arg, &name, atype));
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return (ISC_R_SUCCESS);
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}
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static inline isc_result_t
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digest_in_naptr(ARGS_DIGEST) {
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isc_region_t r1, r2;
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unsigned int length, n;
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isc_result_t result;
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dns_name_t name;
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REQUIRE(rdata->type == 35);
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REQUIRE(rdata->rdclass == 1);
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dns_rdata_toregion(rdata, &r1);
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r2 = r1;
|
|
length = 0;
|
|
|
|
/*
|
|
* Order, preference.
|
|
*/
|
|
length += 4;
|
|
isc_region_consume(&r2, 4);
|
|
|
|
/*
|
|
* Flags.
|
|
*/
|
|
n = r2.base[0] + 1;
|
|
length += n;
|
|
isc_region_consume(&r2, n);
|
|
|
|
/*
|
|
* Service.
|
|
*/
|
|
n = r2.base[0] + 1;
|
|
length += n;
|
|
isc_region_consume(&r2, n);
|
|
|
|
/*
|
|
* Regexp.
|
|
*/
|
|
n = r2.base[0] + 1;
|
|
length += n;
|
|
isc_region_consume(&r2, n);
|
|
|
|
/*
|
|
* Digest the RR up to the replacement name.
|
|
*/
|
|
r1.length = length;
|
|
result = (digest)(arg, &r1);
|
|
if (result != ISC_R_SUCCESS)
|
|
return (result);
|
|
|
|
/*
|
|
* Replacement.
|
|
*/
|
|
|
|
dns_name_init(&name, NULL);
|
|
dns_name_fromregion(&name, &r2);
|
|
|
|
return (dns_name_digest(&name, digest, arg));
|
|
}
|
|
|
|
#endif /* RDATA_IN_1_NAPTR_35_C */
|