1 /* $NetBSD: talink_58.c,v 1.9 2025/01/26 16:25:33 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_TALINK_58_C 17 #define RDATA_GENERIC_TALINK_58_C 18 19 #define RRTYPE_TALINK_ATTRIBUTES 0 20 21 static isc_result_t 22 fromtext_talink(ARGS_FROMTEXT) { 23 isc_token_t token; 24 dns_name_t name; 25 isc_buffer_t buffer; 26 int i; 27 28 REQUIRE(type == dns_rdatatype_talink); 29 30 UNUSED(type); 31 UNUSED(rdclass); 32 UNUSED(callbacks); 33 34 if (origin == NULL) { 35 origin = dns_rootname; 36 } 37 38 for (i = 0; i < 2; i++) { 39 RETERR(isc_lex_getmastertoken(lexer, &token, 40 isc_tokentype_string, false)); 41 42 dns_name_init(&name, NULL); 43 buffer_fromregion(&buffer, &token.value.as_region); 44 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, 45 target)); 46 } 47 48 return ISC_R_SUCCESS; 49 } 50 51 static isc_result_t 52 totext_talink(ARGS_TOTEXT) { 53 isc_region_t dregion; 54 dns_name_t prev; 55 dns_name_t next; 56 dns_name_t prefix; 57 unsigned int opts; 58 59 REQUIRE(rdata->type == dns_rdatatype_talink); 60 REQUIRE(rdata->length != 0); 61 62 dns_name_init(&prev, NULL); 63 dns_name_init(&next, NULL); 64 dns_name_init(&prefix, NULL); 65 66 dns_rdata_toregion(rdata, &dregion); 67 68 dns_name_fromregion(&prev, &dregion); 69 isc_region_consume(&dregion, name_length(&prev)); 70 71 dns_name_fromregion(&next, &dregion); 72 isc_region_consume(&dregion, name_length(&next)); 73 74 opts = name_prefix(&prev, tctx->origin, &prefix) ? DNS_NAME_OMITFINALDOT 75 : 0; 76 RETERR(dns_name_totext(&prefix, opts, target)); 77 78 RETERR(str_totext(" ", target)); 79 80 opts = name_prefix(&next, tctx->origin, &prefix) ? DNS_NAME_OMITFINALDOT 81 : 0; 82 return dns_name_totext(&prefix, opts, target); 83 } 84 85 static isc_result_t 86 fromwire_talink(ARGS_FROMWIRE) { 87 dns_name_t prev; 88 dns_name_t next; 89 90 REQUIRE(type == dns_rdatatype_talink); 91 92 UNUSED(type); 93 UNUSED(rdclass); 94 95 dctx = dns_decompress_setpermitted(dctx, false); 96 97 dns_name_init(&prev, NULL); 98 dns_name_init(&next, NULL); 99 100 RETERR(dns_name_fromwire(&prev, source, dctx, target)); 101 return dns_name_fromwire(&next, source, dctx, target); 102 } 103 104 static isc_result_t 105 towire_talink(ARGS_TOWIRE) { 106 isc_region_t sregion; 107 dns_name_t prev; 108 dns_name_t next; 109 dns_offsets_t moffsets; 110 dns_offsets_t roffsets; 111 112 REQUIRE(rdata->type == dns_rdatatype_talink); 113 REQUIRE(rdata->length != 0); 114 115 dns_compress_setpermitted(cctx, false); 116 117 dns_name_init(&prev, moffsets); 118 dns_name_init(&next, roffsets); 119 120 dns_rdata_toregion(rdata, &sregion); 121 122 dns_name_fromregion(&prev, &sregion); 123 isc_region_consume(&sregion, name_length(&prev)); 124 RETERR(dns_name_towire(&prev, cctx, target, NULL)); 125 126 dns_name_fromregion(&next, &sregion); 127 isc_region_consume(&sregion, name_length(&next)); 128 return dns_name_towire(&next, cctx, target, NULL); 129 } 130 131 static int 132 compare_talink(ARGS_COMPARE) { 133 isc_region_t region1; 134 isc_region_t region2; 135 136 REQUIRE(rdata1->type == rdata2->type); 137 REQUIRE(rdata1->rdclass == rdata2->rdclass); 138 REQUIRE(rdata1->type == dns_rdatatype_talink); 139 REQUIRE(rdata1->length != 0); 140 REQUIRE(rdata2->length != 0); 141 142 dns_rdata_toregion(rdata1, ®ion1); 143 dns_rdata_toregion(rdata2, ®ion2); 144 return isc_region_compare(®ion1, ®ion2); 145 } 146 147 static isc_result_t 148 fromstruct_talink(ARGS_FROMSTRUCT) { 149 dns_rdata_talink_t *talink = source; 150 isc_region_t region; 151 152 REQUIRE(type == dns_rdatatype_talink); 153 REQUIRE(talink != NULL); 154 REQUIRE(talink->common.rdtype == type); 155 REQUIRE(talink->common.rdclass == rdclass); 156 157 UNUSED(type); 158 UNUSED(rdclass); 159 160 dns_name_toregion(&talink->prev, ®ion); 161 RETERR(isc_buffer_copyregion(target, ®ion)); 162 dns_name_toregion(&talink->next, ®ion); 163 return isc_buffer_copyregion(target, ®ion); 164 } 165 166 static isc_result_t 167 tostruct_talink(ARGS_TOSTRUCT) { 168 isc_region_t region; 169 dns_rdata_talink_t *talink = target; 170 dns_name_t name; 171 172 REQUIRE(rdata->type == dns_rdatatype_talink); 173 REQUIRE(talink != NULL); 174 REQUIRE(rdata->length != 0); 175 176 talink->common.rdclass = rdata->rdclass; 177 talink->common.rdtype = rdata->type; 178 ISC_LINK_INIT(&talink->common, link); 179 180 dns_rdata_toregion(rdata, ®ion); 181 182 dns_name_init(&name, NULL); 183 dns_name_fromregion(&name, ®ion); 184 isc_region_consume(®ion, name_length(&name)); 185 dns_name_init(&talink->prev, NULL); 186 name_duporclone(&name, mctx, &talink->prev); 187 188 dns_name_fromregion(&name, ®ion); 189 isc_region_consume(®ion, name_length(&name)); 190 dns_name_init(&talink->next, NULL); 191 name_duporclone(&name, mctx, &talink->next); 192 193 talink->mctx = mctx; 194 return ISC_R_SUCCESS; 195 } 196 197 static void 198 freestruct_talink(ARGS_FREESTRUCT) { 199 dns_rdata_talink_t *talink = source; 200 201 REQUIRE(talink != NULL); 202 REQUIRE(talink->common.rdtype == dns_rdatatype_talink); 203 204 if (talink->mctx == NULL) { 205 return; 206 } 207 208 dns_name_free(&talink->prev, talink->mctx); 209 dns_name_free(&talink->next, talink->mctx); 210 talink->mctx = NULL; 211 } 212 213 static isc_result_t 214 additionaldata_talink(ARGS_ADDLDATA) { 215 REQUIRE(rdata->type == dns_rdatatype_talink); 216 217 UNUSED(rdata); 218 UNUSED(owner); 219 UNUSED(add); 220 UNUSED(arg); 221 222 return ISC_R_SUCCESS; 223 } 224 225 static isc_result_t 226 digest_talink(ARGS_DIGEST) { 227 isc_region_t r; 228 229 REQUIRE(rdata->type == dns_rdatatype_talink); 230 231 dns_rdata_toregion(rdata, &r); 232 return (digest)(arg, &r); 233 } 234 235 static bool 236 checkowner_talink(ARGS_CHECKOWNER) { 237 REQUIRE(type == dns_rdatatype_talink); 238 239 UNUSED(name); 240 UNUSED(type); 241 UNUSED(rdclass); 242 UNUSED(wildcard); 243 244 return true; 245 } 246 247 static bool 248 checknames_talink(ARGS_CHECKNAMES) { 249 REQUIRE(rdata->type == dns_rdatatype_talink); 250 251 UNUSED(bad); 252 UNUSED(owner); 253 254 return true; 255 } 256 257 static int 258 casecompare_talink(ARGS_COMPARE) { 259 return compare_talink(rdata1, rdata2); 260 } 261 262 #endif /* RDATA_GENERIC_TALINK_58_C */ 263