contrib/bind9/lib/dns/rdata/generic/soa_6.c

   1 /*
   2  * Copyright (C) 2004, 2007, 2009, 2011, 2012, 2014, 2015  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
  27 static inline isc_result_t
  28 fromtext_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 == dns_rdatatype_soa);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         if (origin == NULL)
  43                 origin = dns_rootname;
  44
  45         for (i = 0; i < 2; i++) {
  46                 RETERR(isc_lex_getmastertoken(lexer, &token,
  47                                               isc_tokentype_string,
  48                                               ISC_FALSE));
  49
  50                 dns_name_init(&name, NULL);
  51                 buffer_fromregion(&buffer, &token.value.as_region);
  52                 RETTOK(dns_name_fromtext(&name, &buffer, origin,
  53                                          options, target));
  54                 ok = ISC_TRUE;
  55                 if ((options & DNS_RDATA_CHECKNAMES) != 0)
  56                         switch (i) {
  57                         case 0:
  58                                 ok = dns_name_ishostname(&name, ISC_FALSE);
  59                                 break;
  60                         case 1:
  61                                 ok = dns_name_ismailbox(&name);
  62                                 break;
  63
  64                         }
  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         }
  70
  71         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  72                                       ISC_FALSE));
  73         RETERR(uint32_tobuffer(token.value.as_ulong, target));
  74
  75         for (i = 0; i < 4; i++) {
  76                 RETERR(isc_lex_getmastertoken(lexer, &token,
  77                                               isc_tokentype_string,
  78                                               ISC_FALSE));
  79                 RETTOK(dns_counter_fromtext(&token.value.as_textregion, &n));
  80                 RETERR(uint32_tobuffer(n, target));
  81         }
  82
  83         return (ISC_R_SUCCESS);
  84 }
  85
  86 static const char *soa_fieldnames[5] = {
  87         "serial", "refresh", "retry", "expire", "minimum"
  88 };
  89
  90 static inline isc_result_t
  91 totext_soa(ARGS_TOTEXT) {
  92         isc_region_t dregion;
  93         dns_name_t mname;
  94         dns_name_t rname;
  95         dns_name_t prefix;
  96         isc_boolean_t sub;
  97         int i;
  98         isc_boolean_t multiline;
  99         isc_boolean_t comm;
 100
 101         REQUIRE(rdata->type == dns_rdatatype_soa);
 102         REQUIRE(rdata->length != 0);
 103
 104         multiline = ISC_TF((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0);
 105         if (multiline)
 106                 comm = ISC_TF((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0);
 107         else
 108                 comm = ISC_FALSE;
 109
 110
 111         dns_name_init(&mname, NULL);
 112         dns_name_init(&rname, NULL);
 113         dns_name_init(&prefix, NULL);
 114
 115         dns_rdata_toregion(rdata, &dregion);
 116
 117         dns_name_fromregion(&mname, &dregion);
 118         isc_region_consume(&dregion, name_length(&mname));
 119
 120         dns_name_fromregion(&rname, &dregion);
 121         isc_region_consume(&dregion, name_length(&rname));
 122
 123         sub = name_prefix(&mname, tctx->origin, &prefix);
 124         RETERR(dns_name_totext(&prefix, sub, target));
 125
 126         RETERR(str_totext(" ", target));
 127
 128         sub = name_prefix(&rname, tctx->origin, &prefix);
 129         RETERR(dns_name_totext(&prefix, sub, target));
 130
 131         if (multiline)
 132                 RETERR(str_totext(" (" , target));
 133         RETERR(str_totext(tctx->linebreak, target));
 134
 135         for (i = 0; i < 5; i++) {
 136                 char buf[sizeof("0123456789 ; ")];
 137                 unsigned long num;
 138                 num = uint32_fromregion(&dregion);
 139                 isc_region_consume(&dregion, 4);
 140                 sprintf(buf, comm ? "%-10lu ; " : "%lu", num);
 141                 RETERR(str_totext(buf, target));
 142                 if (comm) {
 143                         RETERR(str_totext(soa_fieldnames[i], target));
 144                         /* Print times in week/day/hour/minute/second form */
 145                         if (i >= 1) {
 146                                 RETERR(str_totext(" (", target));
 147                                 RETERR(dns_ttl_totext(num, ISC_TRUE, target));
 148                                 RETERR(str_totext(")", target));
 149                         }
 150                         RETERR(str_totext(tctx->linebreak, target));
 151                 } else if (i < 4) {
 152                         RETERR(str_totext(tctx->linebreak, target));
 153                 }
 154         }
 155
 156         if (multiline)
 157                 RETERR(str_totext(")", target));
 158
 159         return (ISC_R_SUCCESS);
 160 }
 161
 162 static inline isc_result_t
 163 fromwire_soa(ARGS_FROMWIRE) {
 164         dns_name_t mname;
 165         dns_name_t rname;
 166         isc_region_t sregion;
 167         isc_region_t tregion;
 168
 169         REQUIRE(type == dns_rdatatype_soa);
 170
 171         UNUSED(type);
 172         UNUSED(rdclass);
 173
 174         dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
 175
 176         dns_name_init(&mname, NULL);
 177         dns_name_init(&rname, NULL);
 178
 179         RETERR(dns_name_fromwire(&mname, source, dctx, options, target));
 180         RETERR(dns_name_fromwire(&rname, source, dctx, options, target));
 181
 182         isc_buffer_activeregion(source, &sregion);
 183         isc_buffer_availableregion(target, &tregion);
 184
 185         if (sregion.length < 20)
 186                 return (ISC_R_UNEXPECTEDEND);
 187         if (tregion.length < 20)
 188                 return (ISC_R_NOSPACE);
 189
 190         memmove(tregion.base, sregion.base, 20);
 191         isc_buffer_forward(source, 20);
 192         isc_buffer_add(target, 20);
 193
 194         return (ISC_R_SUCCESS);
 195 }
 196
 197 static inline isc_result_t
 198 towire_soa(ARGS_TOWIRE) {
 199         isc_region_t sregion;
 200         isc_region_t tregion;
 201         dns_name_t mname;
 202         dns_name_t rname;
 203         dns_offsets_t moffsets;
 204         dns_offsets_t roffsets;
 205
 206         REQUIRE(rdata->type == dns_rdatatype_soa);
 207         REQUIRE(rdata->length != 0);
 208
 209         dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
 210
 211         dns_name_init(&mname, moffsets);
 212         dns_name_init(&rname, roffsets);
 213
 214         dns_rdata_toregion(rdata, &sregion);
 215
 216         dns_name_fromregion(&mname, &sregion);
 217         isc_region_consume(&sregion, name_length(&mname));
 218         RETERR(dns_name_towire(&mname, cctx, target));
 219
 220         dns_name_fromregion(&rname, &sregion);
 221         isc_region_consume(&sregion, name_length(&rname));
 222         RETERR(dns_name_towire(&rname, cctx, target));
 223
 224         isc_buffer_availableregion(target, &tregion);
 225         if (tregion.length < 20)
 226                 return (ISC_R_NOSPACE);
 227
 228         memmove(tregion.base, sregion.base, 20);
 229         isc_buffer_add(target, 20);
 230         return (ISC_R_SUCCESS);
 231 }
 232
 233 static inline int
 234 compare_soa(ARGS_COMPARE) {
 235         isc_region_t region1;
 236         isc_region_t region2;
 237         dns_name_t name1;
 238         dns_name_t name2;
 239         int order;
 240
 241         REQUIRE(rdata1->type == rdata2->type);
 242         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 243         REQUIRE(rdata1->type == dns_rdatatype_soa);
 244         REQUIRE(rdata1->length != 0);
 245         REQUIRE(rdata2->length != 0);
 246
 247         dns_name_init(&name1, NULL);
 248         dns_name_init(&name2, NULL);
 249
 250         dns_rdata_toregion(rdata1, &region1);
 251         dns_rdata_toregion(rdata2, &region2);
 252
 253         dns_name_fromregion(&name1, &region1);
 254         dns_name_fromregion(&name2, &region2);
 255
 256         order = dns_name_rdatacompare(&name1, &name2);
 257         if (order != 0)
 258                 return (order);
 259
 260         isc_region_consume(&region1, name_length(&name1));
 261         isc_region_consume(&region2, name_length(&name2));
 262
 263         dns_name_init(&name1, NULL);
 264         dns_name_init(&name2, NULL);
 265
 266         dns_name_fromregion(&name1, &region1);
 267         dns_name_fromregion(&name2, &region2);
 268
 269         order = dns_name_rdatacompare(&name1, &name2);
 270         if (order != 0)
 271                 return (order);
 272
 273         isc_region_consume(&region1, name_length(&name1));
 274         isc_region_consume(&region2, name_length(&name2));
 275
 276         return (isc_region_compare(&region1, &region2));
 277 }
 278
 279 static inline isc_result_t
 280 fromstruct_soa(ARGS_FROMSTRUCT) {
 281         dns_rdata_soa_t *soa = source;
 282         isc_region_t region;
 283
 284         REQUIRE(type == dns_rdatatype_soa);
 285         REQUIRE(source != NULL);
 286         REQUIRE(soa->common.rdtype == type);
 287         REQUIRE(soa->common.rdclass == rdclass);
 288
 289         UNUSED(type);
 290         UNUSED(rdclass);
 291
 292         dns_name_toregion(&soa->origin, &region);
 293         RETERR(isc_buffer_copyregion(target, &region));
 294         dns_name_toregion(&soa->contact, &region);
 295         RETERR(isc_buffer_copyregion(target, &region));
 296         RETERR(uint32_tobuffer(soa->serial, target));
 297         RETERR(uint32_tobuffer(soa->refresh, target));
 298         RETERR(uint32_tobuffer(soa->retry, target));
 299         RETERR(uint32_tobuffer(soa->expire, target));
 300         return (uint32_tobuffer(soa->minimum, target));
 301 }
 302
 303 static inline isc_result_t
 304 tostruct_soa(ARGS_TOSTRUCT) {
 305         isc_region_t region;
 306         dns_rdata_soa_t *soa = target;
 307         dns_name_t name;
 308         isc_result_t result;
 309
 310         REQUIRE(rdata->type == dns_rdatatype_soa);
 311         REQUIRE(target != NULL);
 312         REQUIRE(rdata->length != 0);
 313
 314         soa->common.rdclass = rdata->rdclass;
 315         soa->common.rdtype = rdata->type;
 316         ISC_LINK_INIT(&soa->common, link);
 317
 318
 319         dns_rdata_toregion(rdata, &region);
 320
 321         dns_name_init(&name, NULL);
 322         dns_name_fromregion(&name, &region);
 323         isc_region_consume(&region, name_length(&name));
 324         dns_name_init(&soa->origin, NULL);
 325         RETERR(name_duporclone(&name, mctx, &soa->origin));
 326
 327         dns_name_fromregion(&name, &region);
 328         isc_region_consume(&region, name_length(&name));
 329         dns_name_init(&soa->contact, NULL);
 330         result = name_duporclone(&name, mctx, &soa->contact);
 331         if (result != ISC_R_SUCCESS)
 332                 goto cleanup;
 333
 334         soa->serial = uint32_fromregion(&region);
 335         isc_region_consume(&region, 4);
 336
 337         soa->refresh = uint32_fromregion(&region);
 338         isc_region_consume(&region, 4);
 339
 340         soa->retry = uint32_fromregion(&region);
 341         isc_region_consume(&region, 4);
 342
 343         soa->expire = uint32_fromregion(&region);
 344         isc_region_consume(&region, 4);
 345
 346         soa->minimum = uint32_fromregion(&region);
 347
 348         soa->mctx = mctx;
 349         return (ISC_R_SUCCESS);
 350
 351  cleanup:
 352         if (mctx != NULL)
 353                 dns_name_free(&soa->origin, mctx);
 354         return (ISC_R_NOMEMORY);
 355 }
 356
 357 static inline void
 358 freestruct_soa(ARGS_FREESTRUCT) {
 359         dns_rdata_soa_t *soa = source;
 360
 361         REQUIRE(source != NULL);
 362         REQUIRE(soa->common.rdtype == dns_rdatatype_soa);
 363
 364         if (soa->mctx == NULL)
 365                 return;
 366
 367         dns_name_free(&soa->origin, soa->mctx);
 368         dns_name_free(&soa->contact, soa->mctx);
 369         soa->mctx = NULL;
 370 }
 371
 372 static inline isc_result_t
 373 additionaldata_soa(ARGS_ADDLDATA) {
 374         UNUSED(rdata);
 375         UNUSED(add);
 376         UNUSED(arg);
 377
 378         REQUIRE(rdata->type == dns_rdatatype_soa);
 379
 380         return (ISC_R_SUCCESS);
 381 }
 382
 383 static inline isc_result_t
 384 digest_soa(ARGS_DIGEST) {
 385         isc_region_t r;
 386         dns_name_t name;
 387
 388         REQUIRE(rdata->type == dns_rdatatype_soa);
 389
 390         dns_rdata_toregion(rdata, &r);
 391
 392         dns_name_init(&name, NULL);
 393         dns_name_fromregion(&name, &r);
 394         RETERR(dns_name_digest(&name, digest, arg));
 395         isc_region_consume(&r, name_length(&name));
 396
 397         dns_name_init(&name, NULL);
 398         dns_name_fromregion(&name, &r);
 399         RETERR(dns_name_digest(&name, digest, arg));
 400         isc_region_consume(&r, name_length(&name));
 401
 402         return ((digest)(arg, &r));
 403 }
 404
 405 static inline isc_boolean_t
 406 checkowner_soa(ARGS_CHECKOWNER) {
 407
 408         REQUIRE(type == dns_rdatatype_soa);
 409
 410         UNUSED(name);
 411         UNUSED(type);
 412         UNUSED(rdclass);
 413         UNUSED(wildcard);
 414
 415         return (ISC_TRUE);
 416 }
 417
 418 static inline isc_boolean_t
 419 checknames_soa(ARGS_CHECKNAMES) {
 420         isc_region_t region;
 421         dns_name_t name;
 422
 423         REQUIRE(rdata->type == dns_rdatatype_soa);
 424
 425         UNUSED(owner);
 426
 427         dns_rdata_toregion(rdata, &region);
 428         dns_name_init(&name, NULL);
 429         dns_name_fromregion(&name, &region);
 430         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 431                 if (bad != NULL)
 432                         dns_name_clone(&name, bad);
 433                 return (ISC_FALSE);
 434         }
 435         isc_region_consume(&region, name_length(&name));
 436         dns_name_fromregion(&name, &region);
 437         if (!dns_name_ismailbox(&name)) {
 438                 if (bad != NULL)
 439                         dns_name_clone(&name, bad);
 440                 return (ISC_FALSE);
 441         }
 442         return (ISC_TRUE);
 443 }
 444
 445 static inline int
 446 casecompare_soa(ARGS_COMPARE) {
 447         return (compare_soa(rdata1, rdata2));
 448 }
 449
 450 #endif  /* RDATA_GENERIC_SOA_6_C */