1 /* $NetBSD: dname_39.c,v 1.1 2024/02/18 20:57:41 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * SPDX-License-Identifier: MPL-2.0 7 * 8 * This Source Code Form is subject to the terms of the Mozilla Public 9 * License, v. 2.0. If a copy of the MPL was not distributed with this 10 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 11 * 12 * See the COPYRIGHT file distributed with this work for additional 13 * information regarding copyright ownership. 14 */ 15 16 /* RFC2672 */ 17 18 #ifndef RDATA_GENERIC_DNAME_39_C 19 #define RDATA_GENERIC_DNAME_39_C 20 21 #define RRTYPE_DNAME_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON) 22 23 static isc_result_t 24 fromtext_dname(ARGS_FROMTEXT) { 25 isc_token_t token; 26 dns_name_t name; 27 isc_buffer_t buffer; 28 29 REQUIRE(type == dns_rdatatype_dname); 30 31 UNUSED(type); 32 UNUSED(rdclass); 33 UNUSED(callbacks); 34 35 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, 36 false)); 37 38 dns_name_init(&name, NULL); 39 buffer_fromregion(&buffer, &token.value.as_region); 40 if (origin == NULL) { 41 origin = dns_rootname; 42 } 43 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); 44 return (ISC_R_SUCCESS); 45 } 46 47 static isc_result_t 48 totext_dname(ARGS_TOTEXT) { 49 isc_region_t region; 50 dns_name_t name; 51 dns_name_t prefix; 52 bool sub; 53 54 REQUIRE(rdata->type == dns_rdatatype_dname); 55 REQUIRE(rdata->length != 0); 56 57 dns_name_init(&name, NULL); 58 dns_name_init(&prefix, NULL); 59 60 dns_rdata_toregion(rdata, ®ion); 61 dns_name_fromregion(&name, ®ion); 62 63 sub = name_prefix(&name, tctx->origin, &prefix); 64 65 return (dns_name_totext(&prefix, sub, target)); 66 } 67 68 static isc_result_t 69 fromwire_dname(ARGS_FROMWIRE) { 70 dns_name_t name; 71 72 REQUIRE(type == dns_rdatatype_dname); 73 74 UNUSED(type); 75 UNUSED(rdclass); 76 77 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 78 79 dns_name_init(&name, NULL); 80 return (dns_name_fromwire(&name, source, dctx, options, target)); 81 } 82 83 static isc_result_t 84 towire_dname(ARGS_TOWIRE) { 85 dns_name_t name; 86 dns_offsets_t offsets; 87 isc_region_t region; 88 89 REQUIRE(rdata->type == dns_rdatatype_dname); 90 REQUIRE(rdata->length != 0); 91 92 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 93 dns_name_init(&name, offsets); 94 dns_rdata_toregion(rdata, ®ion); 95 dns_name_fromregion(&name, ®ion); 96 97 return (dns_name_towire(&name, cctx, target)); 98 } 99 100 static int 101 compare_dname(ARGS_COMPARE) { 102 dns_name_t name1; 103 dns_name_t name2; 104 isc_region_t region1; 105 isc_region_t region2; 106 107 REQUIRE(rdata1->type == rdata2->type); 108 REQUIRE(rdata1->rdclass == rdata2->rdclass); 109 REQUIRE(rdata1->type == dns_rdatatype_dname); 110 REQUIRE(rdata1->length != 0); 111 REQUIRE(rdata2->length != 0); 112 113 dns_name_init(&name1, NULL); 114 dns_name_init(&name2, NULL); 115 116 dns_rdata_toregion(rdata1, ®ion1); 117 dns_rdata_toregion(rdata2, ®ion2); 118 119 dns_name_fromregion(&name1, ®ion1); 120 dns_name_fromregion(&name2, ®ion2); 121 122 return (dns_name_rdatacompare(&name1, &name2)); 123 } 124 125 static isc_result_t 126 fromstruct_dname(ARGS_FROMSTRUCT) { 127 dns_rdata_dname_t *dname = source; 128 isc_region_t region; 129 130 REQUIRE(type == dns_rdatatype_dname); 131 REQUIRE(dname != NULL); 132 REQUIRE(dname->common.rdtype == type); 133 REQUIRE(dname->common.rdclass == rdclass); 134 135 UNUSED(type); 136 UNUSED(rdclass); 137 138 dns_name_toregion(&dname->dname, ®ion); 139 return (isc_buffer_copyregion(target, ®ion)); 140 } 141 142 static isc_result_t 143 tostruct_dname(ARGS_TOSTRUCT) { 144 isc_region_t region; 145 dns_rdata_dname_t *dname = target; 146 dns_name_t name; 147 148 REQUIRE(rdata->type == dns_rdatatype_dname); 149 REQUIRE(dname != NULL); 150 REQUIRE(rdata->length != 0); 151 152 dname->common.rdclass = rdata->rdclass; 153 dname->common.rdtype = rdata->type; 154 ISC_LINK_INIT(&dname->common, link); 155 156 dns_name_init(&name, NULL); 157 dns_rdata_toregion(rdata, ®ion); 158 dns_name_fromregion(&name, ®ion); 159 dns_name_init(&dname->dname, NULL); 160 RETERR(name_duporclone(&name, mctx, &dname->dname)); 161 dname->mctx = mctx; 162 return (ISC_R_SUCCESS); 163 } 164 165 static void 166 freestruct_dname(ARGS_FREESTRUCT) { 167 dns_rdata_dname_t *dname = source; 168 169 REQUIRE(dname != NULL); 170 REQUIRE(dname->common.rdtype == dns_rdatatype_dname); 171 172 if (dname->mctx == NULL) { 173 return; 174 } 175 176 dns_name_free(&dname->dname, dname->mctx); 177 dname->mctx = NULL; 178 } 179 180 static isc_result_t 181 additionaldata_dname(ARGS_ADDLDATA) { 182 UNUSED(rdata); 183 UNUSED(add); 184 UNUSED(arg); 185 186 REQUIRE(rdata->type == dns_rdatatype_dname); 187 188 return (ISC_R_SUCCESS); 189 } 190 191 static isc_result_t 192 digest_dname(ARGS_DIGEST) { 193 isc_region_t r; 194 dns_name_t name; 195 196 REQUIRE(rdata->type == dns_rdatatype_dname); 197 198 dns_rdata_toregion(rdata, &r); 199 dns_name_init(&name, NULL); 200 dns_name_fromregion(&name, &r); 201 202 return (dns_name_digest(&name, digest, arg)); 203 } 204 205 static bool 206 checkowner_dname(ARGS_CHECKOWNER) { 207 REQUIRE(type == dns_rdatatype_dname); 208 209 UNUSED(name); 210 UNUSED(type); 211 UNUSED(rdclass); 212 UNUSED(wildcard); 213 214 return (true); 215 } 216 217 static bool 218 checknames_dname(ARGS_CHECKNAMES) { 219 REQUIRE(rdata->type == dns_rdatatype_dname); 220 221 UNUSED(rdata); 222 UNUSED(owner); 223 UNUSED(bad); 224 225 return (true); 226 } 227 228 static int 229 casecompare_dname(ARGS_COMPARE) { 230 return (compare_dname(rdata1, rdata2)); 231 } 232 #endif /* RDATA_GENERIC_DNAME_39_C */ 233
Indexes created Sat Feb 28 05:31:39 UTC 2026