contrib/bind-9.2.4rc7/lib/dns/rdata/generic/soa_6.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1998-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and 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: soa_6.c,v 1.53.2.1 2004/03/09 06:11:34 marka Exp $ */
  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
  35         REQUIRE(type == 6);
  36
  37         UNUSED(type);
  38         UNUSED(rdclass);
  39         UNUSED(callbacks);
  40
  41         origin = (origin != NULL) ? origin : dns_rootname;
  42
  43         for (i = 0 ; i < 2 ; i++) {
  44                 RETERR(isc_lex_getmastertoken(lexer, &token,
  45                                               isc_tokentype_string,
  46                                               ISC_FALSE));
  47
  48                 dns_name_init(&name, NULL);
  49                 buffer_fromregion(&buffer, &token.value.as_region);
  50                 RETTOK(dns_name_fromtext(&name, &buffer, origin,
  51                                          downcase, target));
  52         }
  53
  54         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  55                                       ISC_FALSE));
  56         RETERR(uint32_tobuffer(token.value.as_ulong, target));
  57
  58         for (i = 0; i < 4; i++) {
  59                 RETERR(isc_lex_getmastertoken(lexer, &token,
  60                                               isc_tokentype_string,
  61                                               ISC_FALSE));
  62                 RETTOK(dns_counter_fromtext(&token.value.as_textregion, &n));
  63                 RETERR(uint32_tobuffer(n, target));
  64         }
  65
  66         return (ISC_R_SUCCESS);
  67 }
  68
  69 static const char *soa_fieldnames[5] = {
  70         "serial", "refresh", "retry", "expire", "minimum"
  71 };
  72
  73 static inline isc_result_t
  74 totext_soa(ARGS_TOTEXT) {
  75         isc_region_t dregion;
  76         dns_name_t mname;
  77         dns_name_t rname;
  78         dns_name_t prefix;
  79         isc_boolean_t sub;
  80         int i;
  81         isc_boolean_t multiline;
  82         isc_boolean_t comment;
  83
  84         REQUIRE(rdata->type == 6);
  85         REQUIRE(rdata->length != 0);
  86
  87         multiline = ISC_TF((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0);
  88         comment = ISC_TF((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0);
  89
  90         dns_name_init(&mname, NULL);
  91         dns_name_init(&rname, NULL);
  92         dns_name_init(&prefix, NULL);
  93
  94         dns_rdata_toregion(rdata, &dregion);
  95
  96         dns_name_fromregion(&mname, &dregion);
  97         isc_region_consume(&dregion, name_length(&mname));
  98
  99         dns_name_fromregion(&rname, &dregion);
 100         isc_region_consume(&dregion, name_length(&rname));
 101
 102         sub = name_prefix(&mname, tctx->origin, &prefix);
 103         RETERR(dns_name_totext(&prefix, sub, target));
 104
 105         RETERR(str_totext(" ", target));
 106
 107         sub = name_prefix(&rname, tctx->origin, &prefix);
 108         RETERR(dns_name_totext(&prefix, sub, target));
 109
 110         if (multiline)
 111                 RETERR(str_totext(" (" , target));
 112         RETERR(str_totext(tctx->linebreak, target));
 113
 114         for (i = 0; i < 5 ; i++) {
 115                 char buf[sizeof "2147483647"];
 116                 unsigned long num;
 117                 unsigned int numlen;
 118                 num = uint32_fromregion(&dregion);
 119                 isc_region_consume(&dregion, 4);
 120                 numlen = sprintf(buf, "%lu", num);
 121                 INSIST(numlen > 0 && numlen < sizeof "2147483647");
 122                 RETERR(str_totext(buf, target));
 123                 if (multiline && comment) {
 124                         RETERR(str_totext("           ; " + numlen, target));
 125                         RETERR(str_totext(soa_fieldnames[i], target));
 126                         /* Print times in week/day/hour/minute/second form */
 127                         if (i >= 1) {
 128                                 RETERR(str_totext(" (", target));
 129                                 RETERR(dns_ttl_totext(num, ISC_TRUE, target));
 130                                 RETERR(str_totext(")", target));
 131                         }
 132                         RETERR(str_totext(tctx->linebreak, target));
 133                 } else if (i < 4) {
 134                         RETERR(str_totext(tctx->linebreak, target));
 135                 }
 136         }
 137
 138         if (multiline)
 139                 RETERR(str_totext(")", target));
 140
 141         return (ISC_R_SUCCESS);
 142 }
 143
 144 static inline isc_result_t
 145 fromwire_soa(ARGS_FROMWIRE) {
 146         dns_name_t mname;
 147         dns_name_t rname;
 148         isc_region_t sregion;
 149         isc_region_t tregion;
 150
 151         REQUIRE(type == 6);
 152
 153         UNUSED(type);
 154         UNUSED(rdclass);
 155
 156         dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
 157
 158         dns_name_init(&mname, NULL);
 159         dns_name_init(&rname, NULL);
 160
 161         RETERR(dns_name_fromwire(&mname, source, dctx, downcase, target));
 162         RETERR(dns_name_fromwire(&rname, source, dctx, downcase, target));
 163
 164         isc_buffer_activeregion(source, &sregion);
 165         isc_buffer_availableregion(target, &tregion);
 166
 167         if (sregion.length < 20)
 168                 return (ISC_R_UNEXPECTEDEND);
 169         if (tregion.length < 20)
 170                 return (ISC_R_NOSPACE);
 171
 172         memcpy(tregion.base, sregion.base, 20);
 173         isc_buffer_forward(source, 20);
 174         isc_buffer_add(target, 20);
 175
 176         return (ISC_R_SUCCESS);
 177 }
 178
 179 static inline isc_result_t
 180 towire_soa(ARGS_TOWIRE) {
 181         isc_region_t sregion;
 182         isc_region_t tregion;
 183         dns_name_t mname;
 184         dns_name_t rname;
 185         dns_offsets_t moffsets;
 186         dns_offsets_t roffsets;
 187
 188         REQUIRE(rdata->type == 6);
 189         REQUIRE(rdata->length != 0);
 190
 191         dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
 192
 193         dns_name_init(&mname, moffsets);
 194         dns_name_init(&rname, roffsets);
 195
 196         dns_rdata_toregion(rdata, &sregion);
 197
 198         dns_name_fromregion(&mname, &sregion);
 199         isc_region_consume(&sregion, name_length(&mname));
 200         RETERR(dns_name_towire(&mname, cctx, target));
 201
 202         dns_name_fromregion(&rname, &sregion);
 203         isc_region_consume(&sregion, name_length(&rname));
 204         RETERR(dns_name_towire(&rname, cctx, target));
 205
 206         isc_buffer_availableregion(target, &tregion);
 207         if (tregion.length < 20)
 208                 return (ISC_R_NOSPACE);
 209
 210         memcpy(tregion.base, sregion.base, 20);
 211         isc_buffer_add(target, 20);
 212         return (ISC_R_SUCCESS);
 213 }
 214
 215 static inline int
 216 compare_soa(ARGS_COMPARE) {
 217         isc_region_t region1;
 218         isc_region_t region2;
 219         dns_name_t name1;
 220         dns_name_t name2;
 221         int order;
 222
 223         REQUIRE(rdata1->type == rdata2->type);
 224         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 225         REQUIRE(rdata1->type == 6);
 226         REQUIRE(rdata1->length != 0);
 227         REQUIRE(rdata2->length != 0);
 228
 229         dns_name_init(&name1, NULL);
 230         dns_name_init(&name2, NULL);
 231
 232         dns_rdata_toregion(rdata1, &region1);
 233         dns_rdata_toregion(rdata2, &region2);
 234
 235         dns_name_fromregion(&name1, &region1);
 236         dns_name_fromregion(&name2, &region2);
 237
 238         order = dns_name_rdatacompare(&name1, &name2);
 239         if (order != 0)
 240                 return (order);
 241
 242         isc_region_consume(&region1, name_length(&name1));
 243         isc_region_consume(&region2, name_length(&name2));
 244
 245         dns_name_init(&name1, NULL);
 246         dns_name_init(&name2, NULL);
 247
 248         dns_name_fromregion(&name1, &region1);
 249         dns_name_fromregion(&name2, &region2);
 250
 251         order = dns_name_rdatacompare(&name1, &name2);
 252         if (order != 0)
 253                 return (order);
 254
 255         isc_region_consume(&region1, name_length(&name1));
 256         isc_region_consume(&region2, name_length(&name2));
 257
 258         return (compare_region(&region1, &region2));
 259 }
 260
 261 static inline isc_result_t
 262 fromstruct_soa(ARGS_FROMSTRUCT) {
 263         dns_rdata_soa_t *soa = source;
 264         isc_region_t region;
 265
 266         REQUIRE(type == 6);
 267         REQUIRE(source != NULL);
 268         REQUIRE(soa->common.rdtype == type);
 269         REQUIRE(soa->common.rdclass == rdclass);
 270
 271         UNUSED(type);
 272         UNUSED(rdclass);
 273
 274         dns_name_toregion(&soa->origin, &region);
 275         RETERR(isc_buffer_copyregion(target, &region));
 276         dns_name_toregion(&soa->contact, &region);
 277         RETERR(isc_buffer_copyregion(target, &region));
 278         RETERR(uint32_tobuffer(soa->serial, target));
 279         RETERR(uint32_tobuffer(soa->refresh, target));
 280         RETERR(uint32_tobuffer(soa->retry, target));
 281         RETERR(uint32_tobuffer(soa->expire, target));
 282         return (uint32_tobuffer(soa->minimum, target));
 283 }
 284
 285 static inline isc_result_t
 286 tostruct_soa(ARGS_TOSTRUCT) {
 287         isc_region_t region;
 288         dns_rdata_soa_t *soa = target;
 289         dns_name_t name;
 290         isc_result_t result;
 291
 292         REQUIRE(rdata->type == 6);
 293         REQUIRE(target != NULL);
 294         REQUIRE(rdata->length != 0);
 295
 296         soa->common.rdclass = rdata->rdclass;
 297         soa->common.rdtype = rdata->type;
 298         ISC_LINK_INIT(&soa->common, link);
 299
 300
 301         dns_rdata_toregion(rdata, &region);
 302
 303         dns_name_init(&name, NULL);
 304         dns_name_fromregion(&name, &region);
 305         isc_region_consume(&region, name_length(&name));
 306         dns_name_init(&soa->origin, NULL);
 307         RETERR(name_duporclone(&name, mctx, &soa->origin));
 308
 309         dns_name_fromregion(&name, &region);
 310         isc_region_consume(&region, name_length(&name));
 311         dns_name_init(&soa->contact, NULL);
 312         result = name_duporclone(&name, mctx, &soa->contact);
 313         if (result != ISC_R_SUCCESS)
 314                 goto cleanup;
 315
 316         soa->serial = uint32_fromregion(&region);
 317         isc_region_consume(&region, 4);
 318
 319         soa->refresh = uint32_fromregion(&region);
 320         isc_region_consume(&region, 4);
 321
 322         soa->retry = uint32_fromregion(&region);
 323         isc_region_consume(&region, 4);
 324
 325         soa->expire = uint32_fromregion(&region);
 326         isc_region_consume(&region, 4);
 327
 328         soa->minimum = uint32_fromregion(&region);
 329
 330         soa->mctx = mctx;
 331         return (ISC_R_SUCCESS);
 332
 333  cleanup:
 334         if (mctx != NULL)
 335                 dns_name_free(&soa->origin, mctx);
 336         return (ISC_R_NOMEMORY);
 337 }
 338
 339 static inline void
 340 freestruct_soa(ARGS_FREESTRUCT) {
 341         dns_rdata_soa_t *soa = source;
 342
 343         REQUIRE(source != NULL);
 344         REQUIRE(soa->common.rdtype == 6);
 345
 346         if (soa->mctx == NULL)
 347                 return;
 348
 349         dns_name_free(&soa->origin, soa->mctx);
 350         dns_name_free(&soa->contact, soa->mctx);
 351         soa->mctx = NULL;
 352 }
 353
 354 static inline isc_result_t
 355 additionaldata_soa(ARGS_ADDLDATA) {
 356         UNUSED(rdata);
 357         UNUSED(add);
 358         UNUSED(arg);
 359
 360         REQUIRE(rdata->type == 6);
 361
 362         return (ISC_R_SUCCESS);
 363 }
 364
 365 static inline isc_result_t
 366 digest_soa(ARGS_DIGEST) {
 367         isc_region_t r;
 368         dns_name_t name;
 369
 370         REQUIRE(rdata->type == 6);
 371
 372         dns_rdata_toregion(rdata, &r);
 373
 374         dns_name_init(&name, NULL);
 375         dns_name_fromregion(&name, &r);
 376         RETERR(dns_name_digest(&name, digest, arg));
 377         isc_region_consume(&r, name_length(&name));
 378
 379         dns_name_init(&name, NULL);
 380         dns_name_fromregion(&name, &r);
 381         RETERR(dns_name_digest(&name, digest, arg));
 382         isc_region_consume(&r, name_length(&name));
 383
 384         return ((digest)(arg, &r));
 385 }
 386
 387 #endif  /* RDATA_GENERIC_SOA_6_C */