/contrib/bind9/lib/dns/rdata/generic/soa_6.c
C | 449 lines | 328 code | 102 blank | 19 comment | 65 complexity | a7ee339973f54cef3660969c9e7cd967 MD5 | raw file
Possible License(s): MPL-2.0-no-copyleft-exception, BSD-3-Clause, LGPL-2.0, LGPL-2.1, BSD-2-Clause, 0BSD, JSON, AGPL-1.0, GPL-2.0
1/* 2 * Copyright (C) 2004, 2007, 2009, 2012 Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (C) 1998-2002 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/* $Id$ */ 19 20/* Reviewed: Thu Mar 16 15:18:32 PST 2000 by explorer */ 21 22#ifndef RDATA_GENERIC_SOA_6_C 23#define RDATA_GENERIC_SOA_6_C 24 25#define RRTYPE_SOA_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON) 26 27static inline isc_result_t 28fromtext_soa(ARGS_FROMTEXT) { 29 isc_token_t token; 30 dns_name_t name; 31 isc_buffer_t buffer; 32 int i; 33 isc_uint32_t n; 34 isc_boolean_t ok; 35 36 REQUIRE(type == 6); 37 38 UNUSED(type); 39 UNUSED(rdclass); 40 UNUSED(callbacks); 41 42 origin = (origin != NULL) ? origin : dns_rootname; 43 44 for (i = 0; i < 2; i++) { 45 RETERR(isc_lex_getmastertoken(lexer, &token, 46 isc_tokentype_string, 47 ISC_FALSE)); 48 49 dns_name_init(&name, NULL); 50 buffer_fromregion(&buffer, &token.value.as_region); 51 RETTOK(dns_name_fromtext(&name, &buffer, origin, 52 options, target)); 53 ok = ISC_TRUE; 54 if ((options & DNS_RDATA_CHECKNAMES) != 0) 55 switch (i) { 56 case 0: 57 ok = dns_name_ishostname(&name, ISC_FALSE); 58 break; 59 case 1: 60 ok = dns_name_ismailbox(&name); 61 break; 62 63 } 64 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) 65 RETTOK(DNS_R_BADNAME); 66 if (!ok && callbacks != NULL) 67 warn_badname(&name, lexer, callbacks); 68 } 69 70 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, 71 ISC_FALSE)); 72 RETERR(uint32_tobuffer(token.value.as_ulong, target)); 73 74 for (i = 0; i < 4; i++) { 75 RETERR(isc_lex_getmastertoken(lexer, &token, 76 isc_tokentype_string, 77 ISC_FALSE)); 78 RETTOK(dns_counter_fromtext(&token.value.as_textregion, &n)); 79 RETERR(uint32_tobuffer(n, target)); 80 } 81 82 return (ISC_R_SUCCESS); 83} 84 85static const char *soa_fieldnames[5] = { 86 "serial", "refresh", "retry", "expire", "minimum" 87}; 88 89static inline isc_result_t 90totext_soa(ARGS_TOTEXT) { 91 isc_region_t dregion; 92 dns_name_t mname; 93 dns_name_t rname; 94 dns_name_t prefix; 95 isc_boolean_t sub; 96 int i; 97 isc_boolean_t multiline; 98 isc_boolean_t comment; 99 100 REQUIRE(rdata->type == 6); 101 REQUIRE(rdata->length != 0); 102 103 multiline = ISC_TF((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0); 104 if (multiline) 105 comment = ISC_TF((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0); 106 else 107 comment = ISC_FALSE; 108 109 110 dns_name_init(&mname, NULL); 111 dns_name_init(&rname, NULL); 112 dns_name_init(&prefix, NULL); 113 114 dns_rdata_toregion(rdata, &dregion); 115 116 dns_name_fromregion(&mname, &dregion); 117 isc_region_consume(&dregion, name_length(&mname)); 118 119 dns_name_fromregion(&rname, &dregion); 120 isc_region_consume(&dregion, name_length(&rname)); 121 122 sub = name_prefix(&mname, tctx->origin, &prefix); 123 RETERR(dns_name_totext(&prefix, sub, target)); 124 125 RETERR(str_totext(" ", target)); 126 127 sub = name_prefix(&rname, tctx->origin, &prefix); 128 RETERR(dns_name_totext(&prefix, sub, target)); 129 130 if (multiline) 131 RETERR(str_totext(" (" , target)); 132 RETERR(str_totext(tctx->linebreak, target)); 133 134 for (i = 0; i < 5; i++) { 135 char buf[sizeof("0123456789 ; ")]; 136 unsigned long num; 137 num = uint32_fromregion(&dregion); 138 isc_region_consume(&dregion, 4); 139 sprintf(buf, comment ? "%-10lu ; " : "%lu", num); 140 RETERR(str_totext(buf, target)); 141 if (comment) { 142 RETERR(str_totext(soa_fieldnames[i], target)); 143 /* Print times in week/day/hour/minute/second form */ 144 if (i >= 1) { 145 RETERR(str_totext(" (", target)); 146 RETERR(dns_ttl_totext(num, ISC_TRUE, target)); 147 RETERR(str_totext(")", target)); 148 } 149 RETERR(str_totext(tctx->linebreak, target)); 150 } else if (i < 4) { 151 RETERR(str_totext(tctx->linebreak, target)); 152 } 153 } 154 155 if (multiline) 156 RETERR(str_totext(")", target)); 157 158 return (ISC_R_SUCCESS); 159} 160 161static inline isc_result_t 162fromwire_soa(ARGS_FROMWIRE) { 163 dns_name_t mname; 164 dns_name_t rname; 165 isc_region_t sregion; 166 isc_region_t tregion; 167 168 REQUIRE(type == 6); 169 170 UNUSED(type); 171 UNUSED(rdclass); 172 173 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14); 174 175 dns_name_init(&mname, NULL); 176 dns_name_init(&rname, NULL); 177 178 RETERR(dns_name_fromwire(&mname, source, dctx, options, target)); 179 RETERR(dns_name_fromwire(&rname, source, dctx, options, target)); 180 181 isc_buffer_activeregion(source, &sregion); 182 isc_buffer_availableregion(target, &tregion); 183 184 if (sregion.length < 20) 185 return (ISC_R_UNEXPECTEDEND); 186 if (tregion.length < 20) 187 return (ISC_R_NOSPACE); 188 189 memcpy(tregion.base, sregion.base, 20); 190 isc_buffer_forward(source, 20); 191 isc_buffer_add(target, 20); 192 193 return (ISC_R_SUCCESS); 194} 195 196static inline isc_result_t 197towire_soa(ARGS_TOWIRE) { 198 isc_region_t sregion; 199 isc_region_t tregion; 200 dns_name_t mname; 201 dns_name_t rname; 202 dns_offsets_t moffsets; 203 dns_offsets_t roffsets; 204 205 REQUIRE(rdata->type == 6); 206 REQUIRE(rdata->length != 0); 207 208 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14); 209 210 dns_name_init(&mname, moffsets); 211 dns_name_init(&rname, roffsets); 212 213 dns_rdata_toregion(rdata, &sregion); 214 215 dns_name_fromregion(&mname, &sregion); 216 isc_region_consume(&sregion, name_length(&mname)); 217 RETERR(dns_name_towire(&mname, cctx, target)); 218 219 dns_name_fromregion(&rname, &sregion); 220 isc_region_consume(&sregion, name_length(&rname)); 221 RETERR(dns_name_towire(&rname, cctx, target)); 222 223 isc_buffer_availableregion(target, &tregion); 224 if (tregion.length < 20) 225 return (ISC_R_NOSPACE); 226 227 memcpy(tregion.base, sregion.base, 20); 228 isc_buffer_add(target, 20); 229 return (ISC_R_SUCCESS); 230} 231 232static inline int 233compare_soa(ARGS_COMPARE) { 234 isc_region_t region1; 235 isc_region_t region2; 236 dns_name_t name1; 237 dns_name_t name2; 238 int order; 239 240 REQUIRE(rdata1->type == rdata2->type); 241 REQUIRE(rdata1->rdclass == rdata2->rdclass); 242 REQUIRE(rdata1->type == 6); 243 REQUIRE(rdata1->length != 0); 244 REQUIRE(rdata2->length != 0); 245 246 dns_name_init(&name1, NULL); 247 dns_name_init(&name2, NULL); 248 249 dns_rdata_toregion(rdata1, ®ion1); 250 dns_rdata_toregion(rdata2, ®ion2); 251 252 dns_name_fromregion(&name1, ®ion1); 253 dns_name_fromregion(&name2, ®ion2); 254 255 order = dns_name_rdatacompare(&name1, &name2); 256 if (order != 0) 257 return (order); 258 259 isc_region_consume(®ion1, name_length(&name1)); 260 isc_region_consume(®ion2, name_length(&name2)); 261 262 dns_name_init(&name1, NULL); 263 dns_name_init(&name2, NULL); 264 265 dns_name_fromregion(&name1, ®ion1); 266 dns_name_fromregion(&name2, ®ion2); 267 268 order = dns_name_rdatacompare(&name1, &name2); 269 if (order != 0) 270 return (order); 271 272 isc_region_consume(®ion1, name_length(&name1)); 273 isc_region_consume(®ion2, name_length(&name2)); 274 275 return (isc_region_compare(®ion1, ®ion2)); 276} 277 278static inline isc_result_t 279fromstruct_soa(ARGS_FROMSTRUCT) { 280 dns_rdata_soa_t *soa = source; 281 isc_region_t region; 282 283 REQUIRE(type == 6); 284 REQUIRE(source != NULL); 285 REQUIRE(soa->common.rdtype == type); 286 REQUIRE(soa->common.rdclass == rdclass); 287 288 UNUSED(type); 289 UNUSED(rdclass); 290 291 dns_name_toregion(&soa->origin, ®ion); 292 RETERR(isc_buffer_copyregion(target, ®ion)); 293 dns_name_toregion(&soa->contact, ®ion); 294 RETERR(isc_buffer_copyregion(target, ®ion)); 295 RETERR(uint32_tobuffer(soa->serial, target)); 296 RETERR(uint32_tobuffer(soa->refresh, target)); 297 RETERR(uint32_tobuffer(soa->retry, target)); 298 RETERR(uint32_tobuffer(soa->expire, target)); 299 return (uint32_tobuffer(soa->minimum, target)); 300} 301 302static inline isc_result_t 303tostruct_soa(ARGS_TOSTRUCT) { 304 isc_region_t region; 305 dns_rdata_soa_t *soa = target; 306 dns_name_t name; 307 isc_result_t result; 308 309 REQUIRE(rdata->type == 6); 310 REQUIRE(target != NULL); 311 REQUIRE(rdata->length != 0); 312 313 soa->common.rdclass = rdata->rdclass; 314 soa->common.rdtype = rdata->type; 315 ISC_LINK_INIT(&soa->common, link); 316 317 318 dns_rdata_toregion(rdata, ®ion); 319 320 dns_name_init(&name, NULL); 321 dns_name_fromregion(&name, ®ion); 322 isc_region_consume(®ion, name_length(&name)); 323 dns_name_init(&soa->origin, NULL); 324 RETERR(name_duporclone(&name, mctx, &soa->origin)); 325 326 dns_name_fromregion(&name, ®ion); 327 isc_region_consume(®ion, name_length(&name)); 328 dns_name_init(&soa->contact, NULL); 329 result = name_duporclone(&name, mctx, &soa->contact); 330 if (result != ISC_R_SUCCESS) 331 goto cleanup; 332 333 soa->serial = uint32_fromregion(®ion); 334 isc_region_consume(®ion, 4); 335 336 soa->refresh = uint32_fromregion(®ion); 337 isc_region_consume(®ion, 4); 338 339 soa->retry = uint32_fromregion(®ion); 340 isc_region_consume(®ion, 4); 341 342 soa->expire = uint32_fromregion(®ion); 343 isc_region_consume(®ion, 4); 344 345 soa->minimum = uint32_fromregion(®ion); 346 347 soa->mctx = mctx; 348 return (ISC_R_SUCCESS); 349 350 cleanup: 351 if (mctx != NULL) 352 dns_name_free(&soa->origin, mctx); 353 return (ISC_R_NOMEMORY); 354} 355 356static inline void 357freestruct_soa(ARGS_FREESTRUCT) { 358 dns_rdata_soa_t *soa = source; 359 360 REQUIRE(source != NULL); 361 REQUIRE(soa->common.rdtype == 6); 362 363 if (soa->mctx == NULL) 364 return; 365 366 dns_name_free(&soa->origin, soa->mctx); 367 dns_name_free(&soa->contact, soa->mctx); 368 soa->mctx = NULL; 369} 370 371static inline isc_result_t 372additionaldata_soa(ARGS_ADDLDATA) { 373 UNUSED(rdata); 374 UNUSED(add); 375 UNUSED(arg); 376 377 REQUIRE(rdata->type == 6); 378 379 return (ISC_R_SUCCESS); 380} 381 382static inline isc_result_t 383digest_soa(ARGS_DIGEST) { 384 isc_region_t r; 385 dns_name_t name; 386 387 REQUIRE(rdata->type == 6); 388 389 dns_rdata_toregion(rdata, &r); 390 391 dns_name_init(&name, NULL); 392 dns_name_fromregion(&name, &r); 393 RETERR(dns_name_digest(&name, digest, arg)); 394 isc_region_consume(&r, name_length(&name)); 395 396 dns_name_init(&name, NULL); 397 dns_name_fromregion(&name, &r); 398 RETERR(dns_name_digest(&name, digest, arg)); 399 isc_region_consume(&r, name_length(&name)); 400 401 return ((digest)(arg, &r)); 402} 403 404static inline isc_boolean_t 405checkowner_soa(ARGS_CHECKOWNER) { 406 407 REQUIRE(type == 6); 408 409 UNUSED(name); 410 UNUSED(type); 411 UNUSED(rdclass); 412 UNUSED(wildcard); 413 414 return (ISC_TRUE); 415} 416 417static inline isc_boolean_t 418checknames_soa(ARGS_CHECKNAMES) { 419 isc_region_t region; 420 dns_name_t name; 421 422 REQUIRE(rdata->type == 6); 423 424 UNUSED(owner); 425 426 dns_rdata_toregion(rdata, ®ion); 427 dns_name_init(&name, NULL); 428 dns_name_fromregion(&name, ®ion); 429 if (!dns_name_ishostname(&name, ISC_FALSE)) { 430 if (bad != NULL) 431 dns_name_clone(&name, bad); 432 return (ISC_FALSE); 433 } 434 isc_region_consume(®ion, name_length(&name)); 435 dns_name_fromregion(&name, ®ion); 436 if (!dns_name_ismailbox(&name)) { 437 if (bad != NULL) 438 dns_name_clone(&name, bad); 439 return (ISC_FALSE); 440 } 441 return (ISC_TRUE); 442} 443 444static inline int 445casecompare_soa(ARGS_COMPARE) { 446 return (compare_soa(rdata1, rdata2)); 447} 448 449#endif /* RDATA_GENERIC_SOA_6_C */