1 /* $NetBSD: ns_2.c,v 1.1 2024/02/18 20:57:43 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 #ifndef RDATA_GENERIC_NS_2_C 17 #define RDATA_GENERIC_NS_2_C 18 19 #define RRTYPE_NS_ATTRIBUTES (DNS_RDATATYPEATTR_ZONECUTAUTH) 20 21 static isc_result_t 22 fromtext_ns(ARGS_FROMTEXT) { 23 isc_token_t token; 24 dns_name_t name; 25 isc_buffer_t buffer; 26 bool ok; 27 28 REQUIRE(type == dns_rdatatype_ns); 29 30 UNUSED(type); 31 UNUSED(rdclass); 32 UNUSED(callbacks); 33 34 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, 35 false)); 36 37 dns_name_init(&name, NULL); 38 buffer_fromregion(&buffer, &token.value.as_region); 39 if (origin == NULL) { 40 origin = dns_rootname; 41 } 42 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); 43 ok = true; 44 if ((options & DNS_RDATA_CHECKNAMES) != 0) { 45 ok = dns_name_ishostname(&name, false); 46 } 47 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) { 48 RETTOK(DNS_R_BADNAME); 49 } 50 if (!ok && callbacks != NULL) { 51 warn_badname(&name, lexer, callbacks); 52 } 53 return (ISC_R_SUCCESS); 54 } 55 56 static isc_result_t 57 totext_ns(ARGS_TOTEXT) { 58 isc_region_t region; 59 dns_name_t name; 60 dns_name_t prefix; 61 bool sub; 62 63 REQUIRE(rdata->type == dns_rdatatype_ns); 64 REQUIRE(rdata->length != 0); 65 66 dns_name_init(&name, NULL); 67 dns_name_init(&prefix, NULL); 68 69 dns_rdata_toregion(rdata, ®ion); 70 dns_name_fromregion(&name, ®ion); 71 72 sub = name_prefix(&name, tctx->origin, &prefix); 73 74 return (dns_name_totext(&prefix, sub, target)); 75 } 76 77 static isc_result_t 78 fromwire_ns(ARGS_FROMWIRE) { 79 dns_name_t name; 80 81 REQUIRE(type == dns_rdatatype_ns); 82 83 UNUSED(type); 84 UNUSED(rdclass); 85 86 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14); 87 88 dns_name_init(&name, NULL); 89 return (dns_name_fromwire(&name, source, dctx, options, target)); 90 } 91 92 static isc_result_t 93 towire_ns(ARGS_TOWIRE) { 94 dns_name_t name; 95 dns_offsets_t offsets; 96 isc_region_t region; 97 98 REQUIRE(rdata->type == dns_rdatatype_ns); 99 REQUIRE(rdata->length != 0); 100 101 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14); 102 103 dns_name_init(&name, offsets); 104 dns_rdata_toregion(rdata, ®ion); 105 dns_name_fromregion(&name, ®ion); 106 107 return (dns_name_towire(&name, cctx, target)); 108 } 109 110 static int 111 compare_ns(ARGS_COMPARE) { 112 dns_name_t name1; 113 dns_name_t name2; 114 isc_region_t region1; 115 isc_region_t region2; 116 117 REQUIRE(rdata1->type == rdata2->type); 118 REQUIRE(rdata1->rdclass == rdata2->rdclass); 119 REQUIRE(rdata1->type == dns_rdatatype_ns); 120 REQUIRE(rdata1->length != 0); 121 REQUIRE(rdata2->length != 0); 122 123 dns_name_init(&name1, NULL); 124 dns_name_init(&name2, NULL); 125 126 dns_rdata_toregion(rdata1, ®ion1); 127 dns_rdata_toregion(rdata2, ®ion2); 128 129 dns_name_fromregion(&name1, ®ion1); 130 dns_name_fromregion(&name2, ®ion2); 131 132 return (dns_name_rdatacompare(&name1, &name2)); 133 } 134 135 static isc_result_t 136 fromstruct_ns(ARGS_FROMSTRUCT) { 137 dns_rdata_ns_t *ns = source; 138 isc_region_t region; 139 140 REQUIRE(type == dns_rdatatype_ns); 141 REQUIRE(ns != NULL); 142 REQUIRE(ns->common.rdtype == type); 143 REQUIRE(ns->common.rdclass == rdclass); 144 145 UNUSED(type); 146 UNUSED(rdclass); 147 148 dns_name_toregion(&ns->name, ®ion); 149 return (isc_buffer_copyregion(target, ®ion)); 150 } 151 152 static isc_result_t 153 tostruct_ns(ARGS_TOSTRUCT) { 154 isc_region_t region; 155 dns_rdata_ns_t *ns = target; 156 dns_name_t name; 157 158 REQUIRE(rdata->type == dns_rdatatype_ns); 159 REQUIRE(ns != NULL); 160 REQUIRE(rdata->length != 0); 161 162 ns->common.rdclass = rdata->rdclass; 163 ns->common.rdtype = rdata->type; 164 ISC_LINK_INIT(&ns->common, link); 165 166 dns_name_init(&name, NULL); 167 dns_rdata_toregion(rdata, ®ion); 168 dns_name_fromregion(&name, ®ion); 169 dns_name_init(&ns->name, NULL); 170 RETERR(name_duporclone(&name, mctx, &ns->name)); 171 ns->mctx = mctx; 172 return (ISC_R_SUCCESS); 173 } 174 175 static void 176 freestruct_ns(ARGS_FREESTRUCT) { 177 dns_rdata_ns_t *ns = source; 178 179 REQUIRE(ns != NULL); 180 181 if (ns->mctx == NULL) { 182 return; 183 } 184 185 dns_name_free(&ns->name, ns->mctx); 186 ns->mctx = NULL; 187 } 188 189 static isc_result_t 190 additionaldata_ns(ARGS_ADDLDATA) { 191 dns_name_t name; 192 dns_offsets_t offsets; 193 isc_region_t region; 194 195 REQUIRE(rdata->type == dns_rdatatype_ns); 196 197 dns_name_init(&name, offsets); 198 dns_rdata_toregion(rdata, ®ion); 199 dns_name_fromregion(&name, ®ion); 200 201 return ((add)(arg, &name, dns_rdatatype_a)); 202 } 203 204 static isc_result_t 205 digest_ns(ARGS_DIGEST) { 206 isc_region_t r; 207 dns_name_t name; 208 209 REQUIRE(rdata->type == dns_rdatatype_ns); 210 211 dns_rdata_toregion(rdata, &r); 212 dns_name_init(&name, NULL); 213 dns_name_fromregion(&name, &r); 214 215 return (dns_name_digest(&name, digest, arg)); 216 } 217 218 static bool 219 checkowner_ns(ARGS_CHECKOWNER) { 220 REQUIRE(type == dns_rdatatype_ns); 221 222 UNUSED(name); 223 UNUSED(type); 224 UNUSED(rdclass); 225 UNUSED(wildcard); 226 227 return (true); 228 } 229 230 static bool 231 checknames_ns(ARGS_CHECKNAMES) { 232 isc_region_t region; 233 dns_name_t name; 234 235 REQUIRE(rdata->type == dns_rdatatype_ns); 236 237 UNUSED(owner); 238 239 dns_rdata_toregion(rdata, ®ion); 240 dns_name_init(&name, NULL); 241 dns_name_fromregion(&name, ®ion); 242 if (!dns_name_ishostname(&name, false)) { 243 if (bad != NULL) { 244 dns_name_clone(&name, bad); 245 } 246 return (false); 247 } 248 return (true); 249 } 250 251 static int 252 casecompare_ns(ARGS_COMPARE) { 253 return (compare_ns(rdata1, rdata2)); 254 } 255 256 #endif /* RDATA_GENERIC_NS_2_C */ 257
Indexes created Sun Mar 01 05:31:48 UTC 2026