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: rt_21.c,v 1.48 2009/12/04 22:06:37 tbox Exp $ */ 19 20/* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */ 21 22/* RFC1183 */ 23 24#ifndef RDATA_GENERIC_RT_21_C 25#define RDATA_GENERIC_RT_21_C 26 27#define RRTYPE_RT_ATTRIBUTES (0) 28 29static inline isc_result_t 30fromtext_rt(ARGS_FROMTEXT) { 31 isc_token_t token; 32 dns_name_t name; 33 isc_buffer_t buffer; 34 isc_boolean_t ok; 35 36 REQUIRE(type == 21); 37 38 UNUSED(type); 39 UNUSED(rdclass); 40 UNUSED(callbacks); 41 42 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, 43 ISC_FALSE)); 44 if (token.value.as_ulong > 0xffffU) 45 RETTOK(ISC_R_RANGE); 46 RETERR(uint16_tobuffer(token.value.as_ulong, target)); 47 48 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, 49 ISC_FALSE)); 50 51 dns_name_init(&name, NULL); 52 buffer_fromregion(&buffer, &token.value.as_region); 53 origin = (origin != NULL) ? origin : dns_rootname; 54 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); 55 ok = ISC_TRUE; 56 if ((options & DNS_RDATA_CHECKNAMES) != 0) 57 ok = dns_name_ishostname(&name, ISC_FALSE); 58 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) 59 RETTOK(DNS_R_BADNAME); 60 if (!ok && callbacks != NULL) 61 warn_badname(&name, lexer, callbacks); 62 return (ISC_R_SUCCESS); 63} 64 65static inline isc_result_t 66totext_rt(ARGS_TOTEXT) { 67 isc_region_t region; 68 dns_name_t name; 69 dns_name_t prefix; 70 isc_boolean_t sub; 71 char buf[sizeof("64000")]; 72 unsigned short num; 73 74 REQUIRE(rdata->type == 21); 75 REQUIRE(rdata->length != 0); 76 77 dns_name_init(&name, NULL); 78 dns_name_init(&prefix, NULL); 79 80 dns_rdata_toregion(rdata, ®ion); 81 num = uint16_fromregion(®ion); 82 isc_region_consume(®ion, 2); 83 sprintf(buf, "%u", num); 84 RETERR(str_totext(buf, target)); 85 RETERR(str_totext(" ", target)); 86 dns_name_fromregion(&name, ®ion); 87 sub = name_prefix(&name, tctx->origin, &prefix); 88 return (dns_name_totext(&prefix, sub, target)); 89} 90 91static inline isc_result_t 92fromwire_rt(ARGS_FROMWIRE) { 93 dns_name_t name; 94 isc_region_t sregion; 95 isc_region_t tregion; 96 97 REQUIRE(type == 21); 98 99 UNUSED(type); 100 UNUSED(rdclass); 101 102 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 103 104 dns_name_init(&name, NULL); 105 106 isc_buffer_activeregion(source, &sregion); 107 isc_buffer_availableregion(target, &tregion); 108 if (tregion.length < 2) 109 return (ISC_R_NOSPACE); 110 if (sregion.length < 2) 111 return (ISC_R_UNEXPECTEDEND); 112 memcpy(tregion.base, sregion.base, 2); 113 isc_buffer_forward(source, 2); 114 isc_buffer_add(target, 2); 115 return (dns_name_fromwire(&name, source, dctx, options, target)); 116} 117 118static inline isc_result_t 119towire_rt(ARGS_TOWIRE) { 120 dns_name_t name; 121 dns_offsets_t offsets; 122 isc_region_t region; 123 isc_region_t tr; 124 125 REQUIRE(rdata->type == 21); 126 REQUIRE(rdata->length != 0); 127 128 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 129 isc_buffer_availableregion(target, &tr); 130 dns_rdata_toregion(rdata, ®ion); 131 if (tr.length < 2) 132 return (ISC_R_NOSPACE); 133 memcpy(tr.base, region.base, 2); 134 isc_region_consume(®ion, 2); 135 isc_buffer_add(target, 2); 136 137 dns_name_init(&name, offsets); 138 dns_name_fromregion(&name, ®ion); 139 140 return (dns_name_towire(&name, cctx, target)); 141} 142 143static inline int 144compare_rt(ARGS_COMPARE) { 145 dns_name_t name1; 146 dns_name_t name2; 147 isc_region_t region1; 148 isc_region_t region2; 149 int order; 150 151 REQUIRE(rdata1->type == rdata2->type); 152 REQUIRE(rdata1->rdclass == rdata2->rdclass); 153 REQUIRE(rdata1->type == 21); 154 REQUIRE(rdata1->length != 0); 155 REQUIRE(rdata2->length != 0); 156 157 order = memcmp(rdata1->data, rdata2->data, 2); 158 if (order != 0) 159 return (order < 0 ? -1 : 1); 160 161 dns_name_init(&name1, NULL); 162 dns_name_init(&name2, NULL); 163 164 dns_rdata_toregion(rdata1, ®ion1); 165 dns_rdata_toregion(rdata2, ®ion2); 166 167 isc_region_consume(®ion1, 2); 168 isc_region_consume(®ion2, 2); 169 170 dns_name_fromregion(&name1, ®ion1); 171 dns_name_fromregion(&name2, ®ion2); 172 173 return (dns_name_rdatacompare(&name1, &name2)); 174} 175 176static inline isc_result_t 177fromstruct_rt(ARGS_FROMSTRUCT) { 178 dns_rdata_rt_t *rt = source; 179 isc_region_t region; 180 181 REQUIRE(type == 21); 182 REQUIRE(source != NULL); 183 REQUIRE(rt->common.rdtype == type); 184 REQUIRE(rt->common.rdclass == rdclass); 185 186 UNUSED(type); 187 UNUSED(rdclass); 188 189 RETERR(uint16_tobuffer(rt->preference, target)); 190 dns_name_toregion(&rt->host, ®ion); 191 return (isc_buffer_copyregion(target, ®ion)); 192} 193 194static inline isc_result_t 195tostruct_rt(ARGS_TOSTRUCT) { 196 isc_region_t region; 197 dns_rdata_rt_t *rt = target; 198 dns_name_t name; 199 200 REQUIRE(rdata->type == 21); 201 REQUIRE(target != NULL); 202 REQUIRE(rdata->length != 0); 203 204 rt->common.rdclass = rdata->rdclass; 205 rt->common.rdtype = rdata->type; 206 ISC_LINK_INIT(&rt->common, link); 207 208 dns_name_init(&name, NULL); 209 dns_rdata_toregion(rdata, ®ion); 210 rt->preference = uint16_fromregion(®ion); 211 isc_region_consume(®ion, 2); 212 dns_name_fromregion(&name, ®ion); 213 dns_name_init(&rt->host, NULL); 214 RETERR(name_duporclone(&name, mctx, &rt->host)); 215 216 rt->mctx = mctx; 217 return (ISC_R_SUCCESS); 218} 219 220static inline void 221freestruct_rt(ARGS_FREESTRUCT) { 222 dns_rdata_rt_t *rt = source; 223 224 REQUIRE(source != NULL); 225 REQUIRE(rt->common.rdtype == 21); 226 227 if (rt->mctx == NULL) 228 return; 229 230 dns_name_free(&rt->host, rt->mctx); 231 rt->mctx = NULL; 232} 233 234static inline isc_result_t 235additionaldata_rt(ARGS_ADDLDATA) { 236 dns_name_t name; 237 dns_offsets_t offsets; 238 isc_region_t region; 239 isc_result_t result; 240 241 REQUIRE(rdata->type == 21); 242 243 dns_name_init(&name, offsets); 244 dns_rdata_toregion(rdata, ®ion); 245 isc_region_consume(®ion, 2); 246 dns_name_fromregion(&name, ®ion); 247 248 result = (add)(arg, &name, dns_rdatatype_x25); 249 if (result != ISC_R_SUCCESS) 250 return (result); 251 result = (add)(arg, &name, dns_rdatatype_isdn); 252 if (result != ISC_R_SUCCESS) 253 return (result); 254 return ((add)(arg, &name, dns_rdatatype_a)); 255} 256 257static inline isc_result_t 258digest_rt(ARGS_DIGEST) { 259 isc_region_t r1, r2; 260 isc_result_t result; 261 dns_name_t name; 262 263 REQUIRE(rdata->type == 21); 264 265 dns_rdata_toregion(rdata, &r1); 266 r2 = r1; 267 isc_region_consume(&r2, 2); 268 r1.length = 2; 269 result = (digest)(arg, &r1); 270 if (result != ISC_R_SUCCESS) 271 return (result); 272 dns_name_init(&name, NULL); 273 dns_name_fromregion(&name, &r2); 274 return (dns_name_digest(&name, digest, arg)); 275} 276 277static inline isc_boolean_t 278checkowner_rt(ARGS_CHECKOWNER) { 279 280 REQUIRE(type == 21); 281 282 UNUSED(name); 283 UNUSED(type); 284 UNUSED(rdclass); 285 UNUSED(wildcard); 286 287 return (ISC_TRUE); 288} 289 290static inline isc_boolean_t 291checknames_rt(ARGS_CHECKNAMES) { 292 isc_region_t region; 293 dns_name_t name; 294 295 REQUIRE(rdata->type == 21); 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 311static inline int 312casecompare_rt(ARGS_COMPARE) { 313 return (compare_rt(rdata1, rdata2)); 314} 315 316#endif /* RDATA_GENERIC_RT_21_C */ 317