1 /* $NetBSD: rt_21.c,v 1.5 2014/12/10 04:37:59 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: rt_21.c,v 1.48 2009/12/04 22:06:37 tbox Exp */ 21 22 /* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */ 23 24 /* RFC1183 */ 25 26 #ifndef RDATA_GENERIC_RT_21_C 27 #define RDATA_GENERIC_RT_21_C 28 29 #define RRTYPE_RT_ATTRIBUTES (0) 30 31 static inline isc_result_t 32 fromtext_rt(ARGS_FROMTEXT) { 33 isc_token_t token; 34 dns_name_t name; 35 isc_buffer_t buffer; 36 isc_boolean_t ok; 37 38 REQUIRE(type == 21); 39 40 UNUSED(type); 41 UNUSED(rdclass); 42 UNUSED(callbacks); 43 44 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, 45 ISC_FALSE)); 46 if (token.value.as_ulong > 0xffffU) 47 RETTOK(ISC_R_RANGE); 48 RETERR(uint16_tobuffer(token.value.as_ulong, target)); 49 50 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, 51 ISC_FALSE)); 52 53 dns_name_init(&name, NULL); 54 buffer_fromregion(&buffer, &token.value.as_region); 55 origin = (origin != NULL) ? origin : dns_rootname; 56 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); 57 ok = ISC_TRUE; 58 if ((options & DNS_RDATA_CHECKNAMES) != 0) 59 ok = dns_name_ishostname(&name, ISC_FALSE); 60 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) 61 RETTOK(DNS_R_BADNAME); 62 if (!ok && callbacks != NULL) 63 warn_badname(&name, lexer, callbacks); 64 return (ISC_R_SUCCESS); 65 } 66 67 static inline isc_result_t 68 totext_rt(ARGS_TOTEXT) { 69 isc_region_t region; 70 dns_name_t name; 71 dns_name_t prefix; 72 isc_boolean_t sub; 73 char buf[sizeof("64000")]; 74 unsigned short num; 75 76 REQUIRE(rdata->type == 21); 77 REQUIRE(rdata->length != 0); 78 79 dns_name_init(&name, NULL); 80 dns_name_init(&prefix, NULL); 81 82 dns_rdata_toregion(rdata, ®ion); 83 num = uint16_fromregion(®ion); 84 isc_region_consume(®ion, 2); 85 sprintf(buf, "%u", num); 86 RETERR(str_totext(buf, target)); 87 RETERR(str_totext(" ", target)); 88 dns_name_fromregion(&name, ®ion); 89 sub = name_prefix(&name, tctx->origin, &prefix); 90 return (dns_name_totext(&prefix, sub, target)); 91 } 92 93 static inline isc_result_t 94 fromwire_rt(ARGS_FROMWIRE) { 95 dns_name_t name; 96 isc_region_t sregion; 97 isc_region_t tregion; 98 99 REQUIRE(type == 21); 100 101 UNUSED(type); 102 UNUSED(rdclass); 103 104 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 105 106 dns_name_init(&name, NULL); 107 108 isc_buffer_activeregion(source, &sregion); 109 isc_buffer_availableregion(target, &tregion); 110 if (tregion.length < 2) 111 return (ISC_R_NOSPACE); 112 if (sregion.length < 2) 113 return (ISC_R_UNEXPECTEDEND); 114 memmove(tregion.base, sregion.base, 2); 115 isc_buffer_forward(source, 2); 116 isc_buffer_add(target, 2); 117 return (dns_name_fromwire(&name, source, dctx, options, target)); 118 } 119 120 static inline isc_result_t 121 towire_rt(ARGS_TOWIRE) { 122 dns_name_t name; 123 dns_offsets_t offsets; 124 isc_region_t region; 125 isc_region_t tr; 126 127 REQUIRE(rdata->type == 21); 128 REQUIRE(rdata->length != 0); 129 130 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 131 isc_buffer_availableregion(target, &tr); 132 dns_rdata_toregion(rdata, ®ion); 133 if (tr.length < 2) 134 return (ISC_R_NOSPACE); 135 memmove(tr.base, region.base, 2); 136 isc_region_consume(®ion, 2); 137 isc_buffer_add(target, 2); 138 139 dns_name_init(&name, offsets); 140 dns_name_fromregion(&name, ®ion); 141 142 return (dns_name_towire(&name, cctx, target)); 143 } 144 145 static inline int 146 compare_rt(ARGS_COMPARE) { 147 dns_name_t name1; 148 dns_name_t name2; 149 isc_region_t region1; 150 isc_region_t region2; 151 int order; 152 153 REQUIRE(rdata1->type == rdata2->type); 154 REQUIRE(rdata1->rdclass == rdata2->rdclass); 155 REQUIRE(rdata1->type == 21); 156 REQUIRE(rdata1->length != 0); 157 REQUIRE(rdata2->length != 0); 158 159 order = memcmp(rdata1->data, rdata2->data, 2); 160 if (order != 0) 161 return (order < 0 ? -1 : 1); 162 163 dns_name_init(&name1, NULL); 164 dns_name_init(&name2, NULL); 165 166 dns_rdata_toregion(rdata1, ®ion1); 167 dns_rdata_toregion(rdata2, ®ion2); 168 169 isc_region_consume(®ion1, 2); 170 isc_region_consume(®ion2, 2); 171 172 dns_name_fromregion(&name1, ®ion1); 173 dns_name_fromregion(&name2, ®ion2); 174 175 return (dns_name_rdatacompare(&name1, &name2)); 176 } 177 178 static inline isc_result_t 179 fromstruct_rt(ARGS_FROMSTRUCT) { 180 dns_rdata_rt_t *rt = source; 181 isc_region_t region; 182 183 REQUIRE(type == 21); 184 REQUIRE(source != NULL); 185 REQUIRE(rt->common.rdtype == type); 186 REQUIRE(rt->common.rdclass == rdclass); 187 188 UNUSED(type); 189 UNUSED(rdclass); 190 191 RETERR(uint16_tobuffer(rt->preference, target)); 192 dns_name_toregion(&rt->host, ®ion); 193 return (isc_buffer_copyregion(target, ®ion)); 194 } 195 196 static inline isc_result_t 197 tostruct_rt(ARGS_TOSTRUCT) { 198 isc_region_t region; 199 dns_rdata_rt_t *rt = target; 200 dns_name_t name; 201 202 REQUIRE(rdata->type == 21); 203 REQUIRE(target != NULL); 204 REQUIRE(rdata->length != 0); 205 206 rt->common.rdclass = rdata->rdclass; 207 rt->common.rdtype = rdata->type; 208 ISC_LINK_INIT(&rt->common, link); 209 210 dns_name_init(&name, NULL); 211 dns_rdata_toregion(rdata, ®ion); 212 rt->preference = uint16_fromregion(®ion); 213 isc_region_consume(®ion, 2); 214 dns_name_fromregion(&name, ®ion); 215 dns_name_init(&rt->host, NULL); 216 RETERR(name_duporclone(&name, mctx, &rt->host)); 217 218 rt->mctx = mctx; 219 return (ISC_R_SUCCESS); 220 } 221 222 static inline void 223 freestruct_rt(ARGS_FREESTRUCT) { 224 dns_rdata_rt_t *rt = source; 225 226 REQUIRE(source != NULL); 227 REQUIRE(rt->common.rdtype == 21); 228 229 if (rt->mctx == NULL) 230 return; 231 232 dns_name_free(&rt->host, rt->mctx); 233 rt->mctx = NULL; 234 } 235 236 static inline isc_result_t 237 additionaldata_rt(ARGS_ADDLDATA) { 238 dns_name_t name; 239 dns_offsets_t offsets; 240 isc_region_t region; 241 isc_result_t result; 242 243 REQUIRE(rdata->type == 21); 244 245 dns_name_init(&name, offsets); 246 dns_rdata_toregion(rdata, ®ion); 247 isc_region_consume(®ion, 2); 248 dns_name_fromregion(&name, ®ion); 249 250 result = (add)(arg, &name, dns_rdatatype_x25); 251 if (result != ISC_R_SUCCESS) 252 return (result); 253 result = (add)(arg, &name, dns_rdatatype_isdn); 254 if (result != ISC_R_SUCCESS) 255 return (result); 256 return ((add)(arg, &name, dns_rdatatype_a)); 257 } 258 259 static inline isc_result_t 260 digest_rt(ARGS_DIGEST) { 261 isc_region_t r1, r2; 262 isc_result_t result; 263 dns_name_t name; 264 265 REQUIRE(rdata->type == 21); 266 267 dns_rdata_toregion(rdata, &r1); 268 r2 = r1; 269 isc_region_consume(&r2, 2); 270 r1.length = 2; 271 result = (digest)(arg, &r1); 272 if (result != ISC_R_SUCCESS) 273 return (result); 274 dns_name_init(&name, NULL); 275 dns_name_fromregion(&name, &r2); 276 return (dns_name_digest(&name, digest, arg)); 277 } 278 279 static inline isc_boolean_t 280 checkowner_rt(ARGS_CHECKOWNER) { 281 282 REQUIRE(type == 21); 283 284 UNUSED(name); 285 UNUSED(type); 286 UNUSED(rdclass); 287 UNUSED(wildcard); 288 289 return (ISC_TRUE); 290 } 291 292 static inline isc_boolean_t 293 checknames_rt(ARGS_CHECKNAMES) { 294 isc_region_t region; 295 dns_name_t name; 296 297 REQUIRE(rdata->type == 21); 298 299 UNUSED(owner); 300 301 dns_rdata_toregion(rdata, ®ion); 302 isc_region_consume(®ion, 2); 303 dns_name_init(&name, NULL); 304 dns_name_fromregion(&name, ®ion); 305 if (!dns_name_ishostname(&name, ISC_FALSE)) { 306 if (bad != NULL) 307 dns_name_clone(&name, bad); 308 return (ISC_FALSE); 309 } 310 return (ISC_TRUE); 311 } 312 313 static inline int 314 casecompare_rt(ARGS_COMPARE) { 315 return (compare_rt(rdata1, rdata2)); 316 } 317 318 #endif /* RDATA_GENERIC_RT_21_C */ 319