external/bsd/bind/dist/lib/dns/rdata/generic/soa_6.c

   1 /*      $NetBSD: soa_6.c,v 1.6 2014/12/10 04:37:59 christos Exp $       */
   2
   3 /*
   4  * Copyright (C) 2004, 2007, 2009, 2011, 2012, 2014  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1998-2002  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 */
  21
  22 /* Reviewed: Thu Mar 16 15:18:32 PST 2000 by explorer */
  23
  24 #ifndef RDATA_GENERIC_SOA_6_C
  25 #define RDATA_GENERIC_SOA_6_C
  26
  27 #define RRTYPE_SOA_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON)
  28
  29 static inline isc_result_t
  30 fromtext_soa(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         dns_name_t name;
  33         isc_buffer_t buffer;
  34         int i;
  35         isc_uint32_t n;
  36         isc_boolean_t ok;
  37
  38         REQUIRE(type == 6);
  39
  40         UNUSED(type);
  41         UNUSED(rdclass);
  42         UNUSED(callbacks);
  43
  44         origin = (origin != NULL) ? origin : dns_rootname;
  45
  46         for (i = 0; i < 2; i++) {
  47                 RETERR(isc_lex_getmastertoken(lexer, &token,
  48                                               isc_tokentype_string,
  49                                               ISC_FALSE));
  50
  51                 dns_name_init(&name, NULL);
  52                 buffer_fromregion(&buffer, &token.value.as_region);
  53                 RETTOK(dns_name_fromtext(&name, &buffer, origin,
  54                                          options, target));
  55                 ok = ISC_TRUE;
  56                 if ((options & DNS_RDATA_CHECKNAMES) != 0)
  57                         switch (i) {
  58                         case 0:
  59                                 ok = dns_name_ishostname(&name, ISC_FALSE);
  60                                 break;
  61                         case 1:
  62                                 ok = dns_name_ismailbox(&name);
  63                                 break;
  64
  65                         }
  66                 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  67                         RETTOK(DNS_R_BADNAME);
  68                 if (!ok && callbacks != NULL)
  69                         warn_badname(&name, lexer, callbacks);
  70         }
  71
  72         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  73                                       ISC_FALSE));
  74         RETERR(uint32_tobuffer(token.value.as_ulong, target));
  75
  76         for (i = 0; i < 4; i++) {
  77                 RETERR(isc_lex_getmastertoken(lexer, &token,
  78                                               isc_tokentype_string,
  79                                               ISC_FALSE));
  80                 RETTOK(dns_counter_fromtext(&token.value.as_textregion, &n));
  81                 RETERR(uint32_tobuffer(n, target));
  82         }
  83
  84         return (ISC_R_SUCCESS);
  85 }
  86
  87 static const char *soa_fieldnames[5] = {
  88         "serial", "refresh", "retry", "expire", "minimum"
  89 };
  90
  91 static inline isc_result_t
  92 totext_soa(ARGS_TOTEXT) {
  93         isc_region_t dregion;
  94         dns_name_t mname;
  95         dns_name_t rname;
  96         dns_name_t prefix;
  97         isc_boolean_t sub;
  98         int i;
  99         isc_boolean_t multiline;
 100         isc_boolean_t comment;
 101
 102         REQUIRE(rdata->type == 6);
 103         REQUIRE(rdata->length != 0);
 104
 105         multiline = ISC_TF((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0);
 106         if (multiline)
 107                 comment = ISC_TF((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0);
 108         else
 109                 comment = ISC_FALSE;
 110
 111
 112         dns_name_init(&mname, NULL);
 113         dns_name_init(&rname, NULL);
 114         dns_name_init(&prefix, NULL);
 115
 116         dns_rdata_toregion(rdata, &dregion);
 117
 118         dns_name_fromregion(&mname, &dregion);
 119         isc_region_consume(&dregion, name_length(&mname));
 120
 121         dns_name_fromregion(&rname, &dregion);
 122         isc_region_consume(&dregion, name_length(&rname));
 123
 124         sub = name_prefix(&mname, tctx->origin, &prefix);
 125         RETERR(dns_name_totext(&prefix, sub, target));
 126
 127         RETERR(str_totext(" ", target));
 128
 129         sub = name_prefix(&rname, tctx->origin, &prefix);
 130         RETERR(dns_name_totext(&prefix, sub, target));
 131
 132         if (multiline)
 133                 RETERR(str_totext(" (" , target));
 134         RETERR(str_totext(tctx->linebreak, target));
 135
 136         for (i = 0; i < 5; i++) {
 137                 char buf[sizeof("0123456789 ; ")];
 138                 unsigned long num;
 139                 num = uint32_fromregion(&dregion);
 140                 isc_region_consume(&dregion, 4);
 141                 sprintf(buf, comment ? "%-10lu ; " : "%lu", num);
 142                 RETERR(str_totext(buf, target));
 143                 if (comment) {
 144                         RETERR(str_totext(soa_fieldnames[i], target));
 145                         /* Print times in week/day/hour/minute/second form */
 146                         if (i >= 1) {
 147                                 RETERR(str_totext(" (", target));
 148                                 RETERR(dns_ttl_totext(num, ISC_TRUE, target));
 149                                 RETERR(str_totext(")", target));
 150                         }
 151                         RETERR(str_totext(tctx->linebreak, target));
 152                 } else if (i < 4) {
 153                         RETERR(str_totext(tctx->linebreak, target));
 154                 }
 155         }
 156
 157         if (multiline)
 158                 RETERR(str_totext(")", target));
 159
 160         return (ISC_R_SUCCESS);
 161 }
 162
 163 static inline isc_result_t
 164 fromwire_soa(ARGS_FROMWIRE) {
 165         dns_name_t mname;
 166         dns_name_t rname;
 167         isc_region_t sregion;
 168         isc_region_t tregion;
 169
 170         REQUIRE(type == 6);
 171
 172         UNUSED(type);
 173         UNUSED(rdclass);
 174
 175         dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
 176
 177         dns_name_init(&mname, NULL);
 178         dns_name_init(&rname, NULL);
 179
 180         RETERR(dns_name_fromwire(&mname, source, dctx, options, target));
 181         RETERR(dns_name_fromwire(&rname, source, dctx, options, target));
 182
 183         isc_buffer_activeregion(source, &sregion);
 184         isc_buffer_availableregion(target, &tregion);
 185
 186         if (sregion.length < 20)
 187                 return (ISC_R_UNEXPECTEDEND);
 188         if (tregion.length < 20)
 189                 return (ISC_R_NOSPACE);
 190
 191         memmove(tregion.base, sregion.base, 20);
 192         isc_buffer_forward(source, 20);
 193         isc_buffer_add(target, 20);
 194
 195         return (ISC_R_SUCCESS);
 196 }
 197
 198 static inline isc_result_t
 199 towire_soa(ARGS_TOWIRE) {
 200         isc_region_t sregion;
 201         isc_region_t tregion;
 202         dns_name_t mname;
 203         dns_name_t rname;
 204         dns_offsets_t moffsets;
 205         dns_offsets_t roffsets;
 206
 207         REQUIRE(rdata->type == 6);
 208         REQUIRE(rdata->length != 0);
 209
 210         dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
 211
 212         dns_name_init(&mname, moffsets);
 213         dns_name_init(&rname, roffsets);
 214
 215         dns_rdata_toregion(rdata, &sregion);
 216
 217         dns_name_fromregion(&mname, &sregion);
 218         isc_region_consume(&sregion, name_length(&mname));
 219         RETERR(dns_name_towire(&mname, cctx, target));
 220
 221         dns_name_fromregion(&rname, &sregion);
 222         isc_region_consume(&sregion, name_length(&rname));
 223         RETERR(dns_name_towire(&rname, cctx, target));
 224
 225         isc_buffer_availableregion(target, &tregion);
 226         if (tregion.length < 20)
 227                 return (ISC_R_NOSPACE);
 228
 229         memmove(tregion.base, sregion.base, 20);
 230         isc_buffer_add(target, 20);
 231         return (ISC_R_SUCCESS);
 232 }
 233
 234 static inline int
 235 compare_soa(ARGS_COMPARE) {
 236         isc_region_t region1;
 237         isc_region_t region2;
 238         dns_name_t name1;
 239         dns_name_t name2;
 240         int order;
 241
 242         REQUIRE(rdata1->type == rdata2->type);
 243         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 244         REQUIRE(rdata1->type == 6);
 245         REQUIRE(rdata1->length != 0);
 246         REQUIRE(rdata2->length != 0);
 247
 248         dns_name_init(&name1, NULL);
 249         dns_name_init(&name2, NULL);
 250
 251         dns_rdata_toregion(rdata1, &region1);
 252         dns_rdata_toregion(rdata2, &region2);
 253
 254         dns_name_fromregion(&name1, &region1);
 255         dns_name_fromregion(&name2, &region2);
 256
 257         order = dns_name_rdatacompare(&name1, &name2);
 258         if (order != 0)
 259                 return (order);
 260
 261         isc_region_consume(&region1, name_length(&name1));
 262         isc_region_consume(&region2, name_length(&name2));
 263
 264         dns_name_init(&name1, NULL);
 265         dns_name_init(&name2, NULL);
 266
 267         dns_name_fromregion(&name1, &region1);
 268         dns_name_fromregion(&name2, &region2);
 269
 270         order = dns_name_rdatacompare(&name1, &name2);
 271         if (order != 0)
 272                 return (order);
 273
 274         isc_region_consume(&region1, name_length(&name1));
 275         isc_region_consume(&region2, name_length(&name2));
 276
 277         return (isc_region_compare(&region1, &region2));
 278 }
 279
 280 static inline isc_result_t
 281 fromstruct_soa(ARGS_FROMSTRUCT) {
 282         dns_rdata_soa_t *soa = source;
 283         isc_region_t region;
 284
 285         REQUIRE(type == 6);
 286         REQUIRE(source != NULL);
 287         REQUIRE(soa->common.rdtype == type);
 288         REQUIRE(soa->common.rdclass == rdclass);
 289
 290         UNUSED(type);
 291         UNUSED(rdclass);
 292
 293         dns_name_toregion(&soa->origin, &region);
 294         RETERR(isc_buffer_copyregion(target, &region));
 295         dns_name_toregion(&soa->contact, &region);
 296         RETERR(isc_buffer_copyregion(target, &region));
 297         RETERR(uint32_tobuffer(soa->serial, target));
 298         RETERR(uint32_tobuffer(soa->refresh, target));
 299         RETERR(uint32_tobuffer(soa->retry, target));
 300         RETERR(uint32_tobuffer(soa->expire, target));
 301         return (uint32_tobuffer(soa->minimum, target));
 302 }
 303
 304 static inline isc_result_t
 305 tostruct_soa(ARGS_TOSTRUCT) {
 306         isc_region_t region;
 307         dns_rdata_soa_t *soa = target;
 308         dns_name_t name;
 309         isc_result_t result;
 310
 311         REQUIRE(rdata->type == 6);
 312         REQUIRE(target != NULL);
 313         REQUIRE(rdata->length != 0);
 314
 315         soa->common.rdclass = rdata->rdclass;
 316         soa->common.rdtype = rdata->type;
 317         ISC_LINK_INIT(&soa->common, link);
 318
 319
 320         dns_rdata_toregion(rdata, &region);
 321
 322         dns_name_init(&name, NULL);
 323         dns_name_fromregion(&name, &region);
 324         isc_region_consume(&region, name_length(&name));
 325         dns_name_init(&soa->origin, NULL);
 326         RETERR(name_duporclone(&name, mctx, &soa->origin));
 327
 328         dns_name_fromregion(&name, &region);
 329         isc_region_consume(&region, name_length(&name));
 330         dns_name_init(&soa->contact, NULL);
 331         result = name_duporclone(&name, mctx, &soa->contact);
 332         if (result != ISC_R_SUCCESS)
 333                 goto cleanup;
 334
 335         soa->serial = uint32_fromregion(&region);
 336         isc_region_consume(&region, 4);
 337
 338         soa->refresh = uint32_fromregion(&region);
 339         isc_region_consume(&region, 4);
 340
 341         soa->retry = uint32_fromregion(&region);
 342         isc_region_consume(&region, 4);
 343
 344         soa->expire = uint32_fromregion(&region);
 345         isc_region_consume(&region, 4);
 346
 347         soa->minimum = uint32_fromregion(&region);
 348
 349         soa->mctx = mctx;
 350         return (ISC_R_SUCCESS);
 351
 352  cleanup:
 353         if (mctx != NULL)
 354                 dns_name_free(&soa->origin, mctx);
 355         return (ISC_R_NOMEMORY);
 356 }
 357
 358 static inline void
 359 freestruct_soa(ARGS_FREESTRUCT) {
 360         dns_rdata_soa_t *soa = source;
 361
 362         REQUIRE(source != NULL);
 363         REQUIRE(soa->common.rdtype == 6);
 364
 365         if (soa->mctx == NULL)
 366                 return;
 367
 368         dns_name_free(&soa->origin, soa->mctx);
 369         dns_name_free(&soa->contact, soa->mctx);
 370         soa->mctx = NULL;
 371 }
 372
 373 static inline isc_result_t
 374 additionaldata_soa(ARGS_ADDLDATA) {
 375         UNUSED(rdata);
 376         UNUSED(add);
 377         UNUSED(arg);
 378
 379         REQUIRE(rdata->type == 6);
 380
 381         return (ISC_R_SUCCESS);
 382 }
 383
 384 static inline isc_result_t
 385 digest_soa(ARGS_DIGEST) {
 386         isc_region_t r;
 387         dns_name_t name;
 388
 389         REQUIRE(rdata->type == 6);
 390
 391         dns_rdata_toregion(rdata, &r);
 392
 393         dns_name_init(&name, NULL);
 394         dns_name_fromregion(&name, &r);
 395         RETERR(dns_name_digest(&name, digest, arg));
 396         isc_region_consume(&r, name_length(&name));
 397
 398         dns_name_init(&name, NULL);
 399         dns_name_fromregion(&name, &r);
 400         RETERR(dns_name_digest(&name, digest, arg));
 401         isc_region_consume(&r, name_length(&name));
 402
 403         return ((digest)(arg, &r));
 404 }
 405
 406 static inline isc_boolean_t
 407 checkowner_soa(ARGS_CHECKOWNER) {
 408
 409         REQUIRE(type == 6);
 410
 411         UNUSED(name);
 412         UNUSED(type);
 413         UNUSED(rdclass);
 414         UNUSED(wildcard);
 415
 416         return (ISC_TRUE);
 417 }
 418
 419 static inline isc_boolean_t
 420 checknames_soa(ARGS_CHECKNAMES) {
 421         isc_region_t region;
 422         dns_name_t name;
 423
 424         REQUIRE(rdata->type == 6);
 425
 426         UNUSED(owner);
 427
 428         dns_rdata_toregion(rdata, &region);
 429         dns_name_init(&name, NULL);
 430         dns_name_fromregion(&name, &region);
 431         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 432                 if (bad != NULL)
 433                         dns_name_clone(&name, bad);
 434                 return (ISC_FALSE);
 435         }
 436         isc_region_consume(&region, name_length(&name));
 437         dns_name_fromregion(&name, &region);
 438         if (!dns_name_ismailbox(&name)) {
 439                 if (bad != NULL)
 440                         dns_name_clone(&name, bad);
 441                 return (ISC_FALSE);
 442         }
 443         return (ISC_TRUE);
 444 }
 445
 446 static inline int
 447 casecompare_soa(ARGS_COMPARE) {
 448         return (compare_soa(rdata1, rdata2));
 449 }
 450
 451 #endif  /* RDATA_GENERIC_SOA_6_C */