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