1 /* $NetBSD: afsdb_18.c,v 1.5 2014/12/10 04:37:58 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2004, 2005, 2007, 2009, 2014 Internet Systems Consortium, Inc. ("ISC") 5 * Copyright (C) 1999-2001, 2003 Internet Software Consortium. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* Id: afsdb_18.c,v 1.49 2009/12/04 22:06:37 tbox Exp */ 21 22 /* Reviewed: Wed Mar 15 14:59:00 PST 2000 by explorer */ 23 24 /* RFC1183 */ 25 26 #ifndef RDATA_GENERIC_AFSDB_18_C 27 #define RDATA_GENERIC_AFSDB_18_C 28 29 #define RRTYPE_AFSDB_ATTRIBUTES (0) 30 31 static inline isc_result_t 32 fromtext_afsdb(ARGS_FROMTEXT) { 33 isc_token_t token; 34 isc_buffer_t buffer; 35 dns_name_t name; 36 isc_boolean_t ok; 37 38 REQUIRE(type == 18); 39 40 UNUSED(type); 41 UNUSED(rdclass); 42 UNUSED(callbacks); 43 44 /* 45 * Subtype. 46 */ 47 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, 48 ISC_FALSE)); 49 if (token.value.as_ulong > 0xffffU) 50 RETTOK(ISC_R_RANGE); 51 RETERR(uint16_tobuffer(token.value.as_ulong, target)); 52 53 /* 54 * Hostname. 55 */ 56 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, 57 ISC_FALSE)); 58 dns_name_init(&name, NULL); 59 buffer_fromregion(&buffer, &token.value.as_region); 60 origin = (origin != NULL) ? origin : dns_rootname; 61 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); 62 ok = ISC_TRUE; 63 if ((options & DNS_RDATA_CHECKNAMES) != 0) 64 ok = dns_name_ishostname(&name, ISC_FALSE); 65 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) 66 RETTOK(DNS_R_BADNAME); 67 if (!ok && callbacks != NULL) 68 warn_badname(&name, lexer, callbacks); 69 return (ISC_R_SUCCESS); 70 } 71 72 static inline isc_result_t 73 totext_afsdb(ARGS_TOTEXT) { 74 dns_name_t name; 75 dns_name_t prefix; 76 isc_region_t region; 77 char buf[sizeof("64000 ")]; 78 isc_boolean_t sub; 79 unsigned int num; 80 81 REQUIRE(rdata->type == 18); 82 REQUIRE(rdata->length != 0); 83 84 dns_name_init(&name, NULL); 85 dns_name_init(&prefix, NULL); 86 87 dns_rdata_toregion(rdata, ®ion); 88 num = uint16_fromregion(®ion); 89 isc_region_consume(®ion, 2); 90 sprintf(buf, "%u ", num); 91 RETERR(str_totext(buf, target)); 92 dns_name_fromregion(&name, ®ion); 93 sub = name_prefix(&name, tctx->origin, &prefix); 94 return (dns_name_totext(&prefix, sub, target)); 95 } 96 97 static inline isc_result_t 98 fromwire_afsdb(ARGS_FROMWIRE) { 99 dns_name_t name; 100 isc_region_t sr; 101 isc_region_t tr; 102 103 REQUIRE(type == 18); 104 105 UNUSED(type); 106 UNUSED(rdclass); 107 108 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 109 110 dns_name_init(&name, NULL); 111 112 isc_buffer_activeregion(source, &sr); 113 isc_buffer_availableregion(target, &tr); 114 if (tr.length < 2) 115 return (ISC_R_NOSPACE); 116 if (sr.length < 2) 117 return (ISC_R_UNEXPECTEDEND); 118 memmove(tr.base, sr.base, 2); 119 isc_buffer_forward(source, 2); 120 isc_buffer_add(target, 2); 121 return (dns_name_fromwire(&name, source, dctx, options, target)); 122 } 123 124 static inline isc_result_t 125 towire_afsdb(ARGS_TOWIRE) { 126 isc_region_t tr; 127 isc_region_t sr; 128 dns_name_t name; 129 dns_offsets_t offsets; 130 131 REQUIRE(rdata->type == 18); 132 REQUIRE(rdata->length != 0); 133 134 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 135 isc_buffer_availableregion(target, &tr); 136 dns_rdata_toregion(rdata, &sr); 137 if (tr.length < 2) 138 return (ISC_R_NOSPACE); 139 memmove(tr.base, sr.base, 2); 140 isc_region_consume(&sr, 2); 141 isc_buffer_add(target, 2); 142 143 dns_name_init(&name, offsets); 144 dns_name_fromregion(&name, &sr); 145 146 return (dns_name_towire(&name, cctx, target)); 147 } 148 149 static inline int 150 compare_afsdb(ARGS_COMPARE) { 151 int result; 152 dns_name_t name1; 153 dns_name_t name2; 154 isc_region_t region1; 155 isc_region_t region2; 156 157 REQUIRE(rdata1->type == rdata2->type); 158 REQUIRE(rdata1->rdclass == rdata2->rdclass); 159 REQUIRE(rdata1->type == 18); 160 REQUIRE(rdata1->length != 0); 161 REQUIRE(rdata2->length != 0); 162 163 result = memcmp(rdata1->data, rdata2->data, 2); 164 if (result != 0) 165 return (result < 0 ? -1 : 1); 166 167 dns_name_init(&name1, NULL); 168 dns_name_init(&name2, NULL); 169 170 dns_rdata_toregion(rdata1, ®ion1); 171 dns_rdata_toregion(rdata2, ®ion2); 172 173 isc_region_consume(®ion1, 2); 174 isc_region_consume(®ion2, 2); 175 176 dns_name_fromregion(&name1, ®ion1); 177 dns_name_fromregion(&name2, ®ion2); 178 179 return (dns_name_rdatacompare(&name1, &name2)); 180 } 181 182 static inline isc_result_t 183 fromstruct_afsdb(ARGS_FROMSTRUCT) { 184 dns_rdata_afsdb_t *afsdb = source; 185 isc_region_t region; 186 187 REQUIRE(type == 18); 188 REQUIRE(source != NULL); 189 REQUIRE(afsdb->common.rdclass == rdclass); 190 REQUIRE(afsdb->common.rdtype == type); 191 192 UNUSED(type); 193 UNUSED(rdclass); 194 195 RETERR(uint16_tobuffer(afsdb->subtype, target)); 196 dns_name_toregion(&afsdb->server, ®ion); 197 return (isc_buffer_copyregion(target, ®ion)); 198 } 199 200 static inline isc_result_t 201 tostruct_afsdb(ARGS_TOSTRUCT) { 202 isc_region_t region; 203 dns_rdata_afsdb_t *afsdb = target; 204 dns_name_t name; 205 206 REQUIRE(rdata->type == 18); 207 REQUIRE(target != NULL); 208 REQUIRE(rdata->length != 0); 209 210 afsdb->common.rdclass = rdata->rdclass; 211 afsdb->common.rdtype = rdata->type; 212 ISC_LINK_INIT(&afsdb->common, link); 213 214 dns_name_init(&afsdb->server, NULL); 215 216 dns_rdata_toregion(rdata, ®ion); 217 218 afsdb->subtype = uint16_fromregion(®ion); 219 isc_region_consume(®ion, 2); 220 221 dns_name_init(&name, NULL); 222 dns_name_fromregion(&name, ®ion); 223 224 RETERR(name_duporclone(&name, mctx, &afsdb->server)); 225 afsdb->mctx = mctx; 226 return (ISC_R_SUCCESS); 227 } 228 229 static inline void 230 freestruct_afsdb(ARGS_FREESTRUCT) { 231 dns_rdata_afsdb_t *afsdb = source; 232 233 REQUIRE(source != NULL); 234 REQUIRE(afsdb->common.rdtype == 18); 235 236 if (afsdb->mctx == NULL) 237 return; 238 239 dns_name_free(&afsdb->server, afsdb->mctx); 240 afsdb->mctx = NULL; 241 } 242 243 static inline isc_result_t 244 additionaldata_afsdb(ARGS_ADDLDATA) { 245 dns_name_t name; 246 dns_offsets_t offsets; 247 isc_region_t region; 248 249 REQUIRE(rdata->type == 18); 250 251 dns_name_init(&name, offsets); 252 dns_rdata_toregion(rdata, ®ion); 253 isc_region_consume(®ion, 2); 254 dns_name_fromregion(&name, ®ion); 255 256 return ((add)(arg, &name, dns_rdatatype_a)); 257 } 258 259 static inline isc_result_t 260 digest_afsdb(ARGS_DIGEST) { 261 isc_region_t r1, r2; 262 dns_name_t name; 263 264 REQUIRE(rdata->type == 18); 265 266 dns_rdata_toregion(rdata, &r1); 267 r2 = r1; 268 isc_region_consume(&r2, 2); 269 r1.length = 2; 270 RETERR((digest)(arg, &r1)); 271 dns_name_init(&name, NULL); 272 dns_name_fromregion(&name, &r2); 273 274 return (dns_name_digest(&name, digest, arg)); 275 } 276 277 static inline isc_boolean_t 278 checkowner_afsdb(ARGS_CHECKOWNER) { 279 280 REQUIRE(type == 18); 281 282 UNUSED(name); 283 UNUSED(type); 284 UNUSED(rdclass); 285 UNUSED(wildcard); 286 287 return (ISC_TRUE); 288 } 289 290 static inline isc_boolean_t 291 checknames_afsdb(ARGS_CHECKNAMES) { 292 isc_region_t region; 293 dns_name_t name; 294 295 REQUIRE(rdata->type == 18); 296 297 UNUSED(owner); 298 299 dns_rdata_toregion(rdata, ®ion); 300 isc_region_consume(®ion, 2); 301 dns_name_init(&name, NULL); 302 dns_name_fromregion(&name, ®ion); 303 if (!dns_name_ishostname(&name, ISC_FALSE)) { 304 if (bad != NULL) 305 dns_name_clone(&name, bad); 306 return (ISC_FALSE); 307 } 308 return (ISC_TRUE); 309 } 310 311 static inline int 312 casecompare_afsdb(ARGS_COMPARE) { 313 return (compare_afsdb(rdata1, rdata2)); 314 } 315 #endif /* RDATA_GENERIC_AFSDB_18_C */ 316