1 /* $NetBSD: talink_58.c,v 1.6 2021/02/19 16:42:17 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * This Source Code Form is subject to the terms of the Mozilla Public 7 * License, v. 2.0. If a copy of the MPL was not distributed with this 8 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 9 * 10 * See the COPYRIGHT file distributed with this work for additional 11 * information regarding copyright ownership. 12 */ 13 14 #ifndef RDATA_GENERIC_TALINK_58_C 15 #define RDATA_GENERIC_TALINK_58_C 16 17 #define RRTYPE_TALINK_ATTRIBUTES 0 18 19 static inline isc_result_t 20 fromtext_talink(ARGS_FROMTEXT) { 21 isc_token_t token; 22 dns_name_t name; 23 isc_buffer_t buffer; 24 int i; 25 26 REQUIRE(type == dns_rdatatype_talink); 27 28 UNUSED(type); 29 UNUSED(rdclass); 30 UNUSED(callbacks); 31 32 if (origin == NULL) { 33 origin = dns_rootname; 34 } 35 36 for (i = 0; i < 2; i++) { 37 RETERR(isc_lex_getmastertoken(lexer, &token, 38 isc_tokentype_string, false)); 39 40 dns_name_init(&name, NULL); 41 buffer_fromregion(&buffer, &token.value.as_region); 42 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, 43 target)); 44 } 45 46 return (ISC_R_SUCCESS); 47 } 48 49 static inline isc_result_t 50 totext_talink(ARGS_TOTEXT) { 51 isc_region_t dregion; 52 dns_name_t prev; 53 dns_name_t next; 54 dns_name_t prefix; 55 bool sub; 56 57 REQUIRE(rdata->type == dns_rdatatype_talink); 58 REQUIRE(rdata->length != 0); 59 60 dns_name_init(&prev, NULL); 61 dns_name_init(&next, NULL); 62 dns_name_init(&prefix, NULL); 63 64 dns_rdata_toregion(rdata, &dregion); 65 66 dns_name_fromregion(&prev, &dregion); 67 isc_region_consume(&dregion, name_length(&prev)); 68 69 dns_name_fromregion(&next, &dregion); 70 isc_region_consume(&dregion, name_length(&next)); 71 72 sub = name_prefix(&prev, tctx->origin, &prefix); 73 RETERR(dns_name_totext(&prefix, sub, target)); 74 75 RETERR(str_totext(" ", target)); 76 77 sub = name_prefix(&next, tctx->origin, &prefix); 78 return (dns_name_totext(&prefix, sub, target)); 79 } 80 81 static inline isc_result_t 82 fromwire_talink(ARGS_FROMWIRE) { 83 dns_name_t prev; 84 dns_name_t next; 85 86 REQUIRE(type == dns_rdatatype_talink); 87 88 UNUSED(type); 89 UNUSED(rdclass); 90 91 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 92 93 dns_name_init(&prev, NULL); 94 dns_name_init(&next, NULL); 95 96 RETERR(dns_name_fromwire(&prev, source, dctx, options, target)); 97 return (dns_name_fromwire(&next, source, dctx, options, target)); 98 } 99 100 static inline isc_result_t 101 towire_talink(ARGS_TOWIRE) { 102 isc_region_t sregion; 103 dns_name_t prev; 104 dns_name_t next; 105 dns_offsets_t moffsets; 106 dns_offsets_t roffsets; 107 108 REQUIRE(rdata->type == dns_rdatatype_talink); 109 REQUIRE(rdata->length != 0); 110 111 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 112 113 dns_name_init(&prev, moffsets); 114 dns_name_init(&next, roffsets); 115 116 dns_rdata_toregion(rdata, &sregion); 117 118 dns_name_fromregion(&prev, &sregion); 119 isc_region_consume(&sregion, name_length(&prev)); 120 RETERR(dns_name_towire(&prev, cctx, target)); 121 122 dns_name_fromregion(&next, &sregion); 123 isc_region_consume(&sregion, name_length(&next)); 124 return (dns_name_towire(&next, cctx, target)); 125 } 126 127 static inline int 128 compare_talink(ARGS_COMPARE) { 129 isc_region_t region1; 130 isc_region_t region2; 131 132 REQUIRE(rdata1->type == rdata2->type); 133 REQUIRE(rdata1->rdclass == rdata2->rdclass); 134 REQUIRE(rdata1->type == dns_rdatatype_talink); 135 REQUIRE(rdata1->length != 0); 136 REQUIRE(rdata2->length != 0); 137 138 dns_rdata_toregion(rdata1, ®ion1); 139 dns_rdata_toregion(rdata2, ®ion2); 140 return (isc_region_compare(®ion1, ®ion2)); 141 } 142 143 static inline isc_result_t 144 fromstruct_talink(ARGS_FROMSTRUCT) { 145 dns_rdata_talink_t *talink = source; 146 isc_region_t region; 147 148 REQUIRE(type == dns_rdatatype_talink); 149 REQUIRE(talink != NULL); 150 REQUIRE(talink->common.rdtype == type); 151 REQUIRE(talink->common.rdclass == rdclass); 152 153 UNUSED(type); 154 UNUSED(rdclass); 155 156 dns_name_toregion(&talink->prev, ®ion); 157 RETERR(isc_buffer_copyregion(target, ®ion)); 158 dns_name_toregion(&talink->next, ®ion); 159 return (isc_buffer_copyregion(target, ®ion)); 160 } 161 162 static inline isc_result_t 163 tostruct_talink(ARGS_TOSTRUCT) { 164 isc_region_t region; 165 dns_rdata_talink_t *talink = target; 166 dns_name_t name; 167 isc_result_t result; 168 169 REQUIRE(rdata->type == dns_rdatatype_talink); 170 REQUIRE(talink != NULL); 171 REQUIRE(rdata->length != 0); 172 173 talink->common.rdclass = rdata->rdclass; 174 talink->common.rdtype = rdata->type; 175 ISC_LINK_INIT(&talink->common, link); 176 177 dns_rdata_toregion(rdata, ®ion); 178 179 dns_name_init(&name, NULL); 180 dns_name_fromregion(&name, ®ion); 181 isc_region_consume(®ion, name_length(&name)); 182 dns_name_init(&talink->prev, NULL); 183 RETERR(name_duporclone(&name, mctx, &talink->prev)); 184 185 dns_name_fromregion(&name, ®ion); 186 isc_region_consume(®ion, name_length(&name)); 187 dns_name_init(&talink->next, NULL); 188 result = name_duporclone(&name, mctx, &talink->next); 189 if (result != ISC_R_SUCCESS) { 190 goto cleanup; 191 } 192 193 talink->mctx = mctx; 194 return (ISC_R_SUCCESS); 195 196 cleanup: 197 if (mctx != NULL) { 198 dns_name_free(&talink->prev, mctx); 199 } 200 return (ISC_R_NOMEMORY); 201 } 202 203 static inline void 204 freestruct_talink(ARGS_FREESTRUCT) { 205 dns_rdata_talink_t *talink = source; 206 207 REQUIRE(talink != NULL); 208 REQUIRE(talink->common.rdtype == dns_rdatatype_talink); 209 210 if (talink->mctx == NULL) { 211 return; 212 } 213 214 dns_name_free(&talink->prev, talink->mctx); 215 dns_name_free(&talink->next, talink->mctx); 216 talink->mctx = NULL; 217 } 218 219 static inline isc_result_t 220 additionaldata_talink(ARGS_ADDLDATA) { 221 UNUSED(rdata); 222 UNUSED(add); 223 UNUSED(arg); 224 225 REQUIRE(rdata->type == dns_rdatatype_talink); 226 227 return (ISC_R_SUCCESS); 228 } 229 230 static inline isc_result_t 231 digest_talink(ARGS_DIGEST) { 232 isc_region_t r; 233 234 REQUIRE(rdata->type == dns_rdatatype_talink); 235 236 dns_rdata_toregion(rdata, &r); 237 return ((digest)(arg, &r)); 238 } 239 240 static inline bool 241 checkowner_talink(ARGS_CHECKOWNER) { 242 REQUIRE(type == dns_rdatatype_talink); 243 244 UNUSED(name); 245 UNUSED(type); 246 UNUSED(rdclass); 247 UNUSED(wildcard); 248 249 return (true); 250 } 251 252 static inline bool 253 checknames_talink(ARGS_CHECKNAMES) { 254 REQUIRE(rdata->type == dns_rdatatype_talink); 255 256 UNUSED(bad); 257 UNUSED(owner); 258 259 return (true); 260 } 261 262 static inline int 263 casecompare_talink(ARGS_COMPARE) { 264 return (compare_talink(rdata1, rdata2)); 265 } 266 267 #endif /* RDATA_GENERIC_TALINK_58_C */ 268