/* $NetBSD: aaaa_28.c,v 1.8.2.2 2024/02/25 15:47:06 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ /* RFC1886 */ #ifndef RDATA_IN_1_AAAA_28_C #define RDATA_IN_1_AAAA_28_C #include #define RRTYPE_AAAA_ATTRIBUTES (0) static isc_result_t fromtext_in_aaaa(ARGS_FROMTEXT) { isc_token_t token; unsigned char addr[16]; isc_region_t region; REQUIRE(type == dns_rdatatype_aaaa); REQUIRE(rdclass == dns_rdataclass_in); UNUSED(type); UNUSED(origin); UNUSED(options); UNUSED(rdclass); UNUSED(callbacks); RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, false)); if (inet_pton(AF_INET6, DNS_AS_STR(token), addr) != 1) { RETTOK(DNS_R_BADAAAA); } isc_buffer_availableregion(target, ®ion); if (region.length < 16) { return (ISC_R_NOSPACE); } memmove(region.base, addr, 16); isc_buffer_add(target, 16); return (ISC_R_SUCCESS); } static isc_result_t totext_in_aaaa(ARGS_TOTEXT) { isc_region_t region; REQUIRE(rdata->type == dns_rdatatype_aaaa); REQUIRE(rdata->rdclass == dns_rdataclass_in); REQUIRE(rdata->length == 16); if ((tctx->flags & DNS_STYLEFLAG_EXPANDAAAA) != 0) { char buf[5 * 8]; const char *sep = ""; int i, n; unsigned int len = 0; for (i = 0; i < 16; i += 2) { INSIST(len < sizeof(buf)); n = snprintf(buf + len, sizeof(buf) - len, "%s%02x%02x", sep, rdata->data[i], rdata->data[i + 1]); if (n < 0) { return (ISC_R_FAILURE); } len += n; sep = ":"; } return (str_totext(buf, target)); } dns_rdata_toregion(rdata, ®ion); return (inet_totext(AF_INET6, tctx->flags, ®ion, target)); } static isc_result_t fromwire_in_aaaa(ARGS_FROMWIRE) { isc_region_t sregion; isc_region_t tregion; REQUIRE(type == dns_rdatatype_aaaa); REQUIRE(rdclass == dns_rdataclass_in); UNUSED(type); UNUSED(dctx); UNUSED(options); UNUSED(rdclass); isc_buffer_activeregion(source, &sregion); isc_buffer_availableregion(target, &tregion); if (sregion.length < 16) { return (ISC_R_UNEXPECTEDEND); } if (tregion.length < 16) { return (ISC_R_NOSPACE); } memmove(tregion.base, sregion.base, 16); isc_buffer_forward(source, 16); isc_buffer_add(target, 16); return (ISC_R_SUCCESS); } static isc_result_t towire_in_aaaa(ARGS_TOWIRE) { isc_region_t region; UNUSED(cctx); REQUIRE(rdata->type == dns_rdatatype_aaaa); REQUIRE(rdata->rdclass == dns_rdataclass_in); REQUIRE(rdata->length == 16); isc_buffer_availableregion(target, ®ion); if (region.length < rdata->length) { return (ISC_R_NOSPACE); } memmove(region.base, rdata->data, rdata->length); isc_buffer_add(target, 16); return (ISC_R_SUCCESS); } static int compare_in_aaaa(ARGS_COMPARE) { isc_region_t r1; isc_region_t r2; REQUIRE(rdata1->type == rdata2->type); REQUIRE(rdata1->rdclass == rdata2->rdclass); REQUIRE(rdata1->type == dns_rdatatype_aaaa); REQUIRE(rdata1->rdclass == dns_rdataclass_in); REQUIRE(rdata1->length == 16); REQUIRE(rdata2->length == 16); dns_rdata_toregion(rdata1, &r1); dns_rdata_toregion(rdata2, &r2); return (isc_region_compare(&r1, &r2)); } static isc_result_t fromstruct_in_aaaa(ARGS_FROMSTRUCT) { dns_rdata_in_aaaa_t *aaaa = source; REQUIRE(type == dns_rdatatype_aaaa); REQUIRE(rdclass == dns_rdataclass_in); REQUIRE(aaaa != NULL); REQUIRE(aaaa->common.rdtype == type); REQUIRE(aaaa->common.rdclass == rdclass); UNUSED(type); UNUSED(rdclass); return (mem_tobuffer(target, aaaa->in6_addr.s6_addr, 16)); } static isc_result_t tostruct_in_aaaa(ARGS_TOSTRUCT) { dns_rdata_in_aaaa_t *aaaa = target; isc_region_t r; REQUIRE(rdata->type == dns_rdatatype_aaaa); REQUIRE(rdata->rdclass == dns_rdataclass_in); REQUIRE(aaaa != NULL); REQUIRE(rdata->length == 16); UNUSED(mctx); aaaa->common.rdclass = rdata->rdclass; aaaa->common.rdtype = rdata->type; ISC_LINK_INIT(&aaaa->common, link); dns_rdata_toregion(rdata, &r); INSIST(r.length == 16); memmove(aaaa->in6_addr.s6_addr, r.base, 16); return (ISC_R_SUCCESS); } static void freestruct_in_aaaa(ARGS_FREESTRUCT) { dns_rdata_in_aaaa_t *aaaa = source; REQUIRE(aaaa != NULL); REQUIRE(aaaa->common.rdclass == dns_rdataclass_in); REQUIRE(aaaa->common.rdtype == dns_rdatatype_aaaa); UNUSED(aaaa); } static isc_result_t additionaldata_in_aaaa(ARGS_ADDLDATA) { REQUIRE(rdata->type == dns_rdatatype_aaaa); REQUIRE(rdata->rdclass == dns_rdataclass_in); UNUSED(rdata); UNUSED(owner); UNUSED(add); UNUSED(arg); return (ISC_R_SUCCESS); } static isc_result_t digest_in_aaaa(ARGS_DIGEST) { isc_region_t r; REQUIRE(rdata->type == dns_rdatatype_aaaa); REQUIRE(rdata->rdclass == dns_rdataclass_in); dns_rdata_toregion(rdata, &r); return ((digest)(arg, &r)); } static bool checkowner_in_aaaa(ARGS_CHECKOWNER) { dns_name_t prefix, suffix; REQUIRE(type == dns_rdatatype_aaaa); REQUIRE(rdclass == dns_rdataclass_in); UNUSED(type); UNUSED(rdclass); /* * Handle Active Directory gc._msdcs. name. */ if (dns_name_countlabels(name) > 2U) { dns_name_init(&prefix, NULL); dns_name_init(&suffix, NULL); dns_name_split(name, dns_name_countlabels(name) - 2, &prefix, &suffix); if (dns_name_equal(&gc_msdcs, &prefix) && dns_name_ishostname(&suffix, false)) { return (true); } } return (dns_name_ishostname(name, wildcard)); } static bool checknames_in_aaaa(ARGS_CHECKNAMES) { REQUIRE(rdata->type == dns_rdatatype_aaaa); REQUIRE(rdata->rdclass == dns_rdataclass_in); UNUSED(rdata); UNUSED(owner); UNUSED(bad); return (true); } static int casecompare_in_aaaa(ARGS_COMPARE) { return (compare_in_aaaa(rdata1, rdata2)); } #endif /* RDATA_IN_1_AAAA_28_C */