contrib/ldns/rr.c

   1 /* rr.c
   2  *
   3  * access functions for ldns_rr -
   4  * a Net::DNS like library for C
   5  * LibDNS Team @ NLnet Labs
   6  *
   7  * (c) NLnet Labs, 2004-2006
   8  * See the file LICENSE for the license
   9  */
  10 #include <ldns/config.h>
  11
  12 #include <ldns/ldns.h>
  13
  14 #include <strings.h>
  15 #include <limits.h>
  16
  17 #include <errno.h>
  18
  19 #define LDNS_SYNTAX_DATALEN 16
  20 #define LDNS_TTL_DATALEN    21
  21 #define LDNS_RRLIST_INIT    8
  22
  23 ldns_rr *
  24 ldns_rr_new(void)
  25 {
  26         ldns_rr *rr;
  27         rr = LDNS_MALLOC(ldns_rr);
  28         if (!rr) {
  29                 return NULL;
  30         }
  31
  32         ldns_rr_set_owner(rr, NULL);
  33         ldns_rr_set_question(rr, false);
  34         ldns_rr_set_rd_count(rr, 0);
  35         rr->_rdata_fields = NULL;
  36         ldns_rr_set_class(rr, LDNS_RR_CLASS_IN);
  37         ldns_rr_set_ttl(rr, LDNS_DEFAULT_TTL);
  38         return rr;
  39 }
  40
  41 ldns_rr *
  42 ldns_rr_new_frm_type(ldns_rr_type t)
  43 {
  44         ldns_rr *rr;
  45         const ldns_rr_descriptor *desc;
  46         size_t i;
  47
  48         rr = LDNS_MALLOC(ldns_rr);
  49         if (!rr) {
  50                 return NULL;
  51         }
  52
  53         desc = ldns_rr_descript(t);
  54
  55         rr->_rdata_fields = LDNS_XMALLOC(ldns_rdf *, ldns_rr_descriptor_minimum(desc));
  56         if(!rr->_rdata_fields) {
  57                 LDNS_FREE(rr);
  58                 return NULL;
  59         }
  60         for (i = 0; i < ldns_rr_descriptor_minimum(desc); i++) {
  61                 rr->_rdata_fields[i] = NULL;
  62         }
  63
  64         ldns_rr_set_owner(rr, NULL);
  65         ldns_rr_set_question(rr, false);
  66         /* set the count to minimum */
  67         ldns_rr_set_rd_count(rr, ldns_rr_descriptor_minimum(desc));
  68         ldns_rr_set_class(rr, LDNS_RR_CLASS_IN);
  69         ldns_rr_set_ttl(rr, LDNS_DEFAULT_TTL);
  70         ldns_rr_set_type(rr, t);
  71         return rr;
  72 }
  73
  74 void
  75 ldns_rr_free(ldns_rr *rr)
  76 {
  77         size_t i;
  78         if (rr) {
  79                 if (ldns_rr_owner(rr)) {
  80                         ldns_rdf_deep_free(ldns_rr_owner(rr));
  81                 }
  82                 for (i = 0; i < ldns_rr_rd_count(rr); i++) {
  83                         ldns_rdf_deep_free(ldns_rr_rdf(rr, i));
  84                 }
  85                 LDNS_FREE(rr->_rdata_fields);
  86                 LDNS_FREE(rr);
  87         }
  88 }
  89
  90 /* Syntactic sugar for ldns_rr_new_frm_str_internal */
  91 INLINE bool
  92 ldns_rdf_type_maybe_quoted(ldns_rdf_type rdf_type)
  93 {
  94         return  rdf_type == LDNS_RDF_TYPE_STR ||
  95                 rdf_type == LDNS_RDF_TYPE_LONG_STR;
  96 }
  97
  98 /*
  99  * trailing spaces are allowed
 100  * leading spaces are not allowed
 101  * allow ttl to be optional
 102  * class is optional too
 103  * if ttl is missing, and default_ttl is 0, use DEF_TTL
 104  * allow ttl to be written as 1d3h
 105  * So the RR should look like. e.g.
 106  * miek.nl. 3600 IN MX 10 elektron.atoom.net
 107  * or
 108  * miek.nl. 1h IN MX 10 elektron.atoom.net
 109  * or
 110  * miek.nl. IN MX 10 elektron.atoom.net
 111  */
 112 static ldns_status
 113 ldns_rr_new_frm_str_internal(ldns_rr **newrr, const char *str,
 114                              uint32_t default_ttl, ldns_rdf *origin,
 115                              ldns_rdf **prev, bool question)
 116 {
 117         ldns_rr *new;
 118         const ldns_rr_descriptor *desc;
 119         ldns_rr_type rr_type;
 120         ldns_buffer *rr_buf = NULL;
 121         ldns_buffer *rd_buf = NULL;
 122         uint32_t ttl_val;
 123         char  *owner = NULL;
 124         char  *ttl = NULL;
 125         ldns_rr_class clas_val;
 126         char  *clas = NULL;
 127         char  *type = NULL;
 128         char  *rdata = NULL;
 129         char  *rd = NULL;
 130         char  *xtok = NULL; /* For RDF types with spaces (i.e. extra tokens) */
 131         size_t rd_strlen;
 132         const char *delimiters;
 133         ssize_t c;
 134         ldns_rdf *owner_dname;
 135         const char* endptr;
 136         int was_unknown_rr_format = 0;
 137         ldns_status status = LDNS_STATUS_OK;
 138
 139         /* used for types with unknown number of rdatas */
 140         bool done;
 141         bool quoted;
 142
 143         ldns_rdf *r = NULL;
 144         uint16_t r_cnt;
 145         uint16_t r_min;
 146         uint16_t r_max;
 147         size_t pre_data_pos;
 148
 149         uint16_t hex_data_size;
 150         char *hex_data_str = NULL;
 151         uint16_t cur_hex_data_size;
 152         size_t hex_pos = 0;
 153         uint8_t *hex_data = NULL;
 154
 155         new = ldns_rr_new();
 156
 157         owner = LDNS_XMALLOC(char, LDNS_MAX_DOMAINLEN + 1);
 158         ttl = LDNS_XMALLOC(char, LDNS_TTL_DATALEN);
 159         clas = LDNS_XMALLOC(char, LDNS_SYNTAX_DATALEN);
 160         rdata = LDNS_XMALLOC(char, LDNS_MAX_PACKETLEN + 1);
 161         rr_buf = LDNS_MALLOC(ldns_buffer);
 162         rd_buf = LDNS_MALLOC(ldns_buffer);
 163         rd = LDNS_XMALLOC(char, LDNS_MAX_RDFLEN);
 164         xtok = LDNS_XMALLOC(char, LDNS_MAX_RDFLEN);
 165         if (rr_buf) {
 166                 rr_buf->_data = NULL;
 167         }
 168         if (rd_buf) {
 169                 rd_buf->_data = NULL;
 170         }
 171         if (!new || !owner || !ttl || !clas || !rdata ||
 172                         !rr_buf || !rd_buf || !rd || !xtok) {
 173
 174                 goto memerror;
 175         }
 176
 177         ldns_buffer_new_frm_data(rr_buf, (char*)str, strlen(str));
 178
 179         /* split the rr in its parts -1 signals trouble */
 180         if (ldns_bget_token(rr_buf, owner, "\t\n ", LDNS_MAX_DOMAINLEN) == -1){
 181
 182                 status = LDNS_STATUS_SYNTAX_ERR;
 183                 goto error;
 184         }
 185
 186         if (ldns_bget_token(rr_buf, ttl, "\t\n ", LDNS_TTL_DATALEN) == -1) {
 187
 188                 status = LDNS_STATUS_SYNTAX_TTL_ERR;
 189                 goto error;
 190         }
 191         ttl_val = (uint32_t) ldns_str2period(ttl, &endptr);
 192
 193         if (strlen(ttl) > 0 && !isdigit((int) ttl[0])) {
 194                 /* ah, it's not there or something */
 195                 if (default_ttl == 0) {
 196                         ttl_val = LDNS_DEFAULT_TTL;
 197                 } else {
 198                         ttl_val = default_ttl;
 199                 }
 200                 /* we not ASSUMING the TTL is missing and that
 201                  * the rest of the RR is still there. That is
 202                  * CLASS TYPE RDATA
 203                  * so ttl value we read is actually the class
 204                  */
 205                 clas_val = ldns_get_rr_class_by_name(ttl);
 206                 /* class can be left out too, assume IN, current
 207                  * token must be type
 208                  */
 209                 if (clas_val == 0) {
 210                         clas_val = LDNS_RR_CLASS_IN;
 211                         type = LDNS_XMALLOC(char, strlen(ttl) + 1);
 212                         if (!type) {
 213                                 goto memerror;
 214                         }
 215                         strncpy(type, ttl, strlen(ttl) + 1);
 216                 }
 217         } else {
 218                 if (-1 == ldns_bget_token(
 219                                 rr_buf, clas, "\t\n ", LDNS_SYNTAX_DATALEN)) {
 220
 221                         status = LDNS_STATUS_SYNTAX_CLASS_ERR;
 222                         goto error;
 223                 }
 224                 clas_val = ldns_get_rr_class_by_name(clas);
 225                 /* class can be left out too, assume IN, current
 226                  * token must be type
 227                  */
 228                 if (clas_val == 0) {
 229                         clas_val = LDNS_RR_CLASS_IN;
 230                         type = LDNS_XMALLOC(char, strlen(clas) + 1);
 231                         if (!type) {
 232                                 goto memerror;
 233                         }
 234                         strncpy(type, clas, strlen(clas) + 1);
 235                 }
 236         }
 237         /* the rest should still be waiting for us */
 238
 239         if (!type) {
 240                 type = LDNS_XMALLOC(char, LDNS_SYNTAX_DATALEN);
 241                 if (!type) {
 242                         goto memerror;
 243                 }
 244                 if (-1 == ldns_bget_token(
 245                                 rr_buf, type, "\t\n ", LDNS_SYNTAX_DATALEN)) {
 246
 247                         status = LDNS_STATUS_SYNTAX_TYPE_ERR;
 248                         goto error;
 249                 }
 250         }
 251
 252         if (ldns_bget_token(rr_buf, rdata, "\0", LDNS_MAX_PACKETLEN) == -1) {
 253                 /* apparently we are done, and it's only a question RR
 254                  * so do not set status and go to ldnserror here
 255                  */
 256         }
 257         ldns_buffer_new_frm_data(rd_buf, rdata, strlen(rdata));
 258
 259         if (strlen(owner) <= 1 && strncmp(owner, "@", 1) == 0) {
 260                 if (origin) {
 261                         ldns_rr_set_owner(new, ldns_rdf_clone(origin));
 262                 } else if (prev && *prev) {
 263                         ldns_rr_set_owner(new, ldns_rdf_clone(*prev));
 264                 } else {
 265                         /* default to root */
 266                         ldns_rr_set_owner(new, ldns_dname_new_frm_str("."));
 267                 }
 268
 269                 /* @ also overrides prev */
 270                 if (prev) {
 271                         ldns_rdf_deep_free(*prev);
 272                         *prev = ldns_rdf_clone(ldns_rr_owner(new));
 273                         if (!*prev) {
 274                                 goto memerror;
 275                         }
 276                 }
 277         } else {
 278                 if (strlen(owner) == 0) {
 279                         /* no ownername was given, try prev, if that fails
 280                          * origin, else default to root */
 281                         if (prev && *prev) {
 282                                 ldns_rr_set_owner(new, ldns_rdf_clone(*prev));
 283                         } else if (origin) {
 284                                 ldns_rr_set_owner(new, ldns_rdf_clone(origin));
 285                         } else {
 286                                 ldns_rr_set_owner(new,
 287                                                 ldns_dname_new_frm_str("."));
 288                         }
 289                         if(!ldns_rr_owner(new)) {
 290                                 goto memerror;
 291                         }
 292                 } else {
 293                         owner_dname = ldns_dname_new_frm_str(owner);
 294                         if (!owner_dname) {
 295                                 status = LDNS_STATUS_SYNTAX_ERR;
 296                                 goto error;
 297                         }
 298
 299                         ldns_rr_set_owner(new, owner_dname);
 300                         if (!ldns_dname_str_absolute(owner) && origin) {
 301                                 if(ldns_dname_cat(ldns_rr_owner(new), origin)
 302                                                 != LDNS_STATUS_OK) {
 303
 304                                         status = LDNS_STATUS_SYNTAX_ERR;
 305                                         goto error;
 306                                 }
 307                         }
 308                         if (prev) {
 309                                 ldns_rdf_deep_free(*prev);
 310                                 *prev = ldns_rdf_clone(ldns_rr_owner(new));
 311                                 if (!*prev) {
 312                                         goto error;
 313                                 }
 314                         }
 315                 }
 316         }
 317         LDNS_FREE(owner);
 318
 319         ldns_rr_set_question(new, question);
 320
 321         ldns_rr_set_ttl(new, ttl_val);
 322         LDNS_FREE(ttl);
 323
 324         ldns_rr_set_class(new, clas_val);
 325         LDNS_FREE(clas);
 326
 327         rr_type = ldns_get_rr_type_by_name(type);
 328         LDNS_FREE(type);
 329
 330         desc = ldns_rr_descript((uint16_t)rr_type);
 331         ldns_rr_set_type(new, rr_type);
 332         if (desc) {
 333                 /* only the rdata remains */
 334                 r_max = ldns_rr_descriptor_maximum(desc);
 335                 r_min = ldns_rr_descriptor_minimum(desc);
 336         } else {
 337                 r_min = 0;
 338                 r_max = 1;
 339         }
 340
 341         for (done = false, r_cnt = 0; !done && r_cnt < r_max; r_cnt++) {
 342                 quoted = false;
 343
 344                 switch (ldns_rr_descriptor_field_type(desc, r_cnt)) {
 345                 case LDNS_RDF_TYPE_B64        :
 346                 case LDNS_RDF_TYPE_HEX        : /* These rdf types may con- */
 347                 case LDNS_RDF_TYPE_LOC        : /* tain whitespace, only if */
 348                 case LDNS_RDF_TYPE_WKS        : /* it is the last rd field. */
 349                 case LDNS_RDF_TYPE_IPSECKEY   :
 350                 case LDNS_RDF_TYPE_NSEC       : if (r_cnt == r_max - 1) {
 351                                                         delimiters = "\n\t";
 352                                                         break;
 353                                                 }
 354                 default                       : delimiters = "\n\t ";
 355                 }
 356
 357                 if (ldns_rdf_type_maybe_quoted(
 358                                 ldns_rr_descriptor_field_type(
 359                                 desc, r_cnt)) &&
 360                                 ldns_buffer_remaining(rd_buf) > 0){
 361
 362                         /* skip spaces */
 363                         while (*(ldns_buffer_current(rd_buf)) == ' ') {
 364                                 ldns_buffer_skip(rd_buf, 1);
 365                         }
 366
 367                         if (*(ldns_buffer_current(rd_buf)) == '\"') {
 368                                 delimiters = "\"\0";
 369                                 ldns_buffer_skip(rd_buf, 1);
 370                                 quoted = true;
 371                         }
 372                 }
 373
 374                 /* because number of fields can be variable, we can't rely on
 375                  * _maximum() only
 376                  */
 377
 378                 /* skip spaces */
 379                 while (ldns_buffer_position(rd_buf) < ldns_buffer_limit(rd_buf)
 380                                 && *(ldns_buffer_current(rd_buf)) == ' '
 381                                 && !quoted) {
 382
 383                         ldns_buffer_skip(rd_buf, 1);
 384                 }
 385
 386                 pre_data_pos = ldns_buffer_position(rd_buf);
 387                 if (-1 == (c = ldns_bget_token(
 388                                 rd_buf, rd, delimiters, LDNS_MAX_RDFLEN))) {
 389
 390                         done = true;
 391                         break;
 392                 }
 393                 /* hmmz, rfc3597 specifies that any type can be represented
 394                  * with \# method, which can contain spaces...
 395                  * it does specify size though...
 396                  */
 397                 rd_strlen = strlen(rd);
 398
 399                 /* unknown RR data */
 400                 if (strncmp(rd, "\\#", 2) == 0 && !quoted &&
 401                                 (rd_strlen == 2 || rd[2]==' ')) {
 402
 403                         was_unknown_rr_format = 1;
 404                         /* go back to before \#
 405                          * and skip it while setting delimiters better
 406                          */
 407                         ldns_buffer_set_position(rd_buf, pre_data_pos);
 408                         delimiters = "\n\t ";
 409                         (void)ldns_bget_token(rd_buf, rd,
 410                                         delimiters, LDNS_MAX_RDFLEN);
 411                         /* read rdata octet length */
 412                         c = ldns_bget_token(rd_buf, rd,
 413                                         delimiters, LDNS_MAX_RDFLEN);
 414                         if (c == -1) {
 415                                 /* something goes very wrong here */
 416                                 status = LDNS_STATUS_SYNTAX_RDATA_ERR;
 417                                 goto error;
 418                         }
 419                         hex_data_size = (uint16_t) atoi(rd);
 420                         /* copy hex chars into hex str (2 chars per byte) */
 421                         hex_data_str = LDNS_XMALLOC(char, 2*hex_data_size + 1);
 422                         if (!hex_data_str) {
 423                                 /* malloc error */
 424                                 goto memerror;
 425                         }
 426                         cur_hex_data_size = 0;
 427                         while(cur_hex_data_size < 2 * hex_data_size) {
 428                                 c = ldns_bget_token(rd_buf, rd,
 429                                                 delimiters, LDNS_MAX_RDFLEN);
 430                                 if (c != -1) {
 431                                         rd_strlen = strlen(rd);
 432                                 }
 433                                 if (c == -1 ||
 434                                     (size_t)cur_hex_data_size + rd_strlen >
 435                                     2 * (size_t)hex_data_size) {
 436
 437                                         status = LDNS_STATUS_SYNTAX_RDATA_ERR;
 438                                         goto error;
 439                                 }
 440                                 strncpy(hex_data_str + cur_hex_data_size, rd,
 441                                                 rd_strlen);
 442
 443                                 cur_hex_data_size += rd_strlen;
 444                         }
 445                         hex_data_str[cur_hex_data_size] = '\0';
 446
 447                         /* correct the rdf type */
 448                         /* if *we* know the type, interpret it as wireformat */
 449                         if (desc) {
 450                                 hex_pos = 0;
 451                                 hex_data =
 452                                         LDNS_XMALLOC(uint8_t, hex_data_size+2);
 453
 454                                 if (!hex_data) {
 455                                         goto memerror;
 456                                 }
 457                                 ldns_write_uint16(hex_data, hex_data_size);
 458                                 ldns_hexstring_to_data(
 459                                                 hex_data + 2, hex_data_str);
 460                                 status = ldns_wire2rdf(new, hex_data,
 461                                                 hex_data_size + 2, &hex_pos);
 462                                 if (status != LDNS_STATUS_OK) {
 463                                         goto error;
 464                                 }
 465                                 LDNS_FREE(hex_data);
 466                         } else {
 467                                 r = ldns_rdf_new_frm_str(LDNS_RDF_TYPE_HEX,
 468                                                 hex_data_str);
 469                                 if (!r) {
 470                                         goto memerror;
 471                                 }
 472                                 ldns_rdf_set_type(r, LDNS_RDF_TYPE_UNKNOWN);
 473                                 if (!ldns_rr_push_rdf(new, r)) {
 474                                         goto memerror;
 475                                 }
 476                         }
 477                         LDNS_FREE(hex_data_str);
 478
 479                 } else {
 480                         /* Normal RR */
 481                         switch(ldns_rr_descriptor_field_type(desc, r_cnt)) {
 482
 483                         case LDNS_RDF_TYPE_HEX:
 484                         case LDNS_RDF_TYPE_B64:
 485                                 /* When this is the last rdata field, then the
 486                                  * rest should be read in (cause then these
 487                                  * rdf types may contain spaces).
 488                                  */
 489                                 if (r_cnt == r_max - 1) {
 490                                         c = ldns_bget_token(rd_buf, xtok,
 491                                                         "\n", LDNS_MAX_RDFLEN);
 492                                         if (c != -1) {
 493                                                 (void) strncat(rd, xtok,
 494                                                         LDNS_MAX_RDFLEN -
 495                                                         strlen(rd) - 1);
 496                                         }
 497                                 }
 498                                 r = ldns_rdf_new_frm_str(
 499                                                 ldns_rr_descriptor_field_type(
 500                                                         desc, r_cnt), rd);
 501                                 break;
 502
 503                         case LDNS_RDF_TYPE_HIP:
 504                                 /*
 505                                  * In presentation format this RDATA type has
 506                                  * three tokens: An algorithm byte, then a
 507                                  * variable length HIT (in hexbytes) and then
 508                                  * a variable length Public Key (in base64).
 509                                  *
 510                                  * We have just read the algorithm, so we need
 511                                  * two more tokens: HIT and Public Key.
 512                                  */
 513                                 do {
 514                                         /* Read and append HIT */
 515                                         if (ldns_bget_token(rd_buf,
 516                                                         xtok, delimiters,
 517                                                         LDNS_MAX_RDFLEN) == -1)
 518                                                 break;
 519
 520                                         (void) strncat(rd, " ",
 521                                                         LDNS_MAX_RDFLEN -
 522                                                         strlen(rd) - 1);
 523                                         (void) strncat(rd, xtok,
 524                                                         LDNS_MAX_RDFLEN -
 525                                                         strlen(rd) - 1);
 526
 527                                         /* Read and append Public Key*/
 528                                         if (ldns_bget_token(rd_buf,
 529                                                         xtok, delimiters,
 530                                                         LDNS_MAX_RDFLEN) == -1)
 531                                                 break;
 532
 533                                         (void) strncat(rd, " ",
 534                                                         LDNS_MAX_RDFLEN -
 535                                                         strlen(rd) - 1);
 536                                         (void) strncat(rd, xtok,
 537                                                         LDNS_MAX_RDFLEN -
 538                                                         strlen(rd) - 1);
 539                                 } while (false);
 540
 541                                 r = ldns_rdf_new_frm_str(
 542                                                 ldns_rr_descriptor_field_type(
 543                                                         desc, r_cnt), rd);
 544                                 break;
 545
 546                         case LDNS_RDF_TYPE_DNAME:
 547                                 r = ldns_rdf_new_frm_str(
 548                                                 ldns_rr_descriptor_field_type(
 549                                                         desc, r_cnt), rd);
 550
 551                                 /* check if the origin should be used
 552                                  * or concatenated
 553                                  */
 554                                 if (r && ldns_rdf_size(r) > 1 &&
 555                                                 ldns_rdf_data(r)[0] == 1 &&
 556                                                 ldns_rdf_data(r)[1] == '@') {
 557
 558                                         ldns_rdf_deep_free(r);
 559
 560                                         r = origin ? ldns_rdf_clone(origin)
 561
 562                                           : ( rr_type == LDNS_RR_TYPE_SOA ?
 563
 564                                               ldns_rdf_clone(
 565                                                       ldns_rr_owner(new))
 566
 567                                             : ldns_rdf_new_frm_str(
 568                                                     LDNS_RDF_TYPE_DNAME, ".")
 569                                             );
 570
 571                                 } else if (r && rd_strlen >= 1 && origin &&
 572                                                 !ldns_dname_str_absolute(rd)) {
 573
 574                                         status = ldns_dname_cat(r, origin);
 575                                         if (status != LDNS_STATUS_OK) {
 576                                                 goto error;
 577                                         }
 578                                 }
 579                                 break;
 580                         default:
 581                                 r = ldns_rdf_new_frm_str(
 582                                                 ldns_rr_descriptor_field_type(
 583                                                         desc, r_cnt), rd);
 584                                 break;
 585                         }
 586                         if (!r) {
 587                                 status = LDNS_STATUS_SYNTAX_RDATA_ERR;
 588                                 goto error;
 589                         }
 590                         ldns_rr_push_rdf(new, r);
 591                 }
 592                 if (quoted) {
 593                         if (ldns_buffer_available(rd_buf, 1)) {
 594                                 ldns_buffer_skip(rd_buf, 1);
 595                         } else {
 596                                 done = true;
 597                         }
 598                 }
 599
 600         } /* for (done = false, r_cnt = 0; !done && r_cnt < r_max; r_cnt++) */
 601         LDNS_FREE(rd);
 602         LDNS_FREE(xtok);
 603         ldns_buffer_free(rd_buf);
 604         ldns_buffer_free(rr_buf);
 605         LDNS_FREE(rdata);
 606
 607         if (!question && desc && !was_unknown_rr_format &&
 608                         ldns_rr_rd_count(new) < r_min) {
 609
 610                 ldns_rr_free(new);
 611                 return LDNS_STATUS_SYNTAX_MISSING_VALUE_ERR;
 612         }
 613
 614         if (newrr) {
 615                 *newrr = new;
 616         } else {
 617                 /* Maybe the caller just wanted to see if it would parse? */
 618                 ldns_rr_free(new);
 619         }
 620         return LDNS_STATUS_OK;
 621
 622 memerror:
 623         status = LDNS_STATUS_MEM_ERR;
 624 error:
 625         if (rd_buf && rd_buf->_data) {
 626                 ldns_buffer_free(rd_buf);
 627         } else {
 628                 LDNS_FREE(rd_buf);
 629         }
 630         if (rr_buf && rr_buf->_data) {
 631                 ldns_buffer_free(rr_buf);
 632         } else {
 633                 LDNS_FREE(rr_buf);
 634         }
 635         LDNS_FREE(type);
 636         LDNS_FREE(owner);
 637         LDNS_FREE(ttl);
 638         LDNS_FREE(clas);
 639         LDNS_FREE(hex_data);
 640         LDNS_FREE(hex_data_str);
 641         LDNS_FREE(xtok);
 642         LDNS_FREE(rd);
 643         LDNS_FREE(rdata);
 644         ldns_rr_free(new);
 645         return status;
 646 }
 647
 648 ldns_status
 649 ldns_rr_new_frm_str(ldns_rr **newrr, const char *str,
 650                     uint32_t default_ttl, ldns_rdf *origin,
 651                     ldns_rdf **prev)
 652 {
 653         return ldns_rr_new_frm_str_internal(newrr,
 654                                             str,
 655                                             default_ttl,
 656                                             origin,
 657                                             prev,
 658                                             false);
 659 }
 660
 661 ldns_status
 662 ldns_rr_new_question_frm_str(ldns_rr **newrr, const char *str,
 663                              ldns_rdf *origin, ldns_rdf **prev)
 664 {
 665         return ldns_rr_new_frm_str_internal(newrr,
 666                                             str,
 667                                             0,
 668                                             origin,
 669                                             prev,
 670                                             true);
 671 }
 672
 673 ldns_status
 674 ldns_rr_new_frm_fp(ldns_rr **newrr, FILE *fp, uint32_t *ttl, ldns_rdf **origin, ldns_rdf **prev)
 675 {
 676         return ldns_rr_new_frm_fp_l(newrr, fp, ttl, origin, prev, NULL);
 677 }
 678
 679 ldns_status
 680 ldns_rr_new_frm_fp_l(ldns_rr **newrr, FILE *fp, uint32_t *default_ttl, ldns_rdf **origin, ldns_rdf **prev, int *line_nr)
 681 {
 682         char *line;
 683         const char *endptr;  /* unused */
 684         ldns_rr *rr;
 685         uint32_t ttl;
 686         ldns_rdf *tmp;
 687         ldns_status s;
 688         ssize_t size;
 689         int offset = 0;
 690
 691         if (default_ttl) {
 692                 ttl = *default_ttl;
 693         } else {
 694                 ttl = 0;
 695         }
 696
 697         line = LDNS_XMALLOC(char, LDNS_MAX_LINELEN + 1);
 698         if (!line) {
 699                 return LDNS_STATUS_MEM_ERR;
 700         }
 701
 702         /* read an entire line in from the file */
 703         if ((size = ldns_fget_token_l(fp, line, LDNS_PARSE_SKIP_SPACE, LDNS_MAX_LINELEN, line_nr)) == -1) {
 704                 LDNS_FREE(line);
 705                 /* if last line was empty, we are now at feof, which is not
 706                  * always a parse error (happens when for instance last line
 707                  * was a comment)
 708                  */
 709                 return LDNS_STATUS_SYNTAX_ERR;
 710         }
 711
 712         /* we can have the situation, where we've read ok, but still got
 713          * no bytes to play with, in this case size is 0
 714          */
 715         if (size == 0) {
 716                 LDNS_FREE(line);
 717                 return LDNS_STATUS_SYNTAX_EMPTY;
 718         }
 719
 720         if (strncmp(line, "$ORIGIN", 7) == 0 && isspace(line[7])) {
 721                 if (*origin) {
 722                         ldns_rdf_deep_free(*origin);
 723                         *origin = NULL;
 724                 }
 725                 offset = 8;
 726                 while (isspace(line[offset])) {
 727                         offset++;
 728                 }
 729                 tmp = ldns_rdf_new_frm_str(LDNS_RDF_TYPE_DNAME, line + offset);
 730                 if (!tmp) {
 731                         /* could not parse what next to $ORIGIN */
 732                         LDNS_FREE(line);
 733                         return LDNS_STATUS_SYNTAX_DNAME_ERR;
 734                 }
 735                 *origin = tmp;
 736                 s = LDNS_STATUS_SYNTAX_ORIGIN;
 737         } else if (strncmp(line, "$TTL", 4) == 0 && isspace(line[4])) {
 738                 offset = 5;
 739                 while (isspace(line[offset])) {
 740                         offset++;
 741                 }
 742                 if (default_ttl) {
 743                         *default_ttl = ldns_str2period(line + offset, &endptr);
 744                 }
 745                 s = LDNS_STATUS_SYNTAX_TTL;
 746         } else if (strncmp(line, "$INCLUDE", 8) == 0) {
 747                 s = LDNS_STATUS_SYNTAX_INCLUDE;
 748         } else {
 749                 if (origin && *origin) {
 750                         s = ldns_rr_new_frm_str(&rr, (const char*) line, ttl, *origin, prev);
 751                 } else {
 752                         s = ldns_rr_new_frm_str(&rr, (const char*) line, ttl, NULL, prev);
 753                 }
 754         }
 755         LDNS_FREE(line);
 756         if (s == LDNS_STATUS_OK) {
 757                 if (newrr) {
 758                         *newrr = rr;
 759                 } else {
 760                         /* Just testing if it would parse? */
 761                         ldns_rr_free(rr);
 762                 }
 763         }
 764         return s;
 765 }
 766
 767 void
 768 ldns_rr_set_owner(ldns_rr *rr, ldns_rdf *owner)
 769 {
 770         rr->_owner = owner;
 771 }
 772
 773 void
 774 ldns_rr_set_question(ldns_rr *rr, bool question)
 775 {
 776    rr->_rr_question = question;
 777 }
 778
 779 void
 780 ldns_rr_set_ttl(ldns_rr *rr, uint32_t ttl)
 781 {
 782         rr->_ttl = ttl;
 783 }
 784
 785 void
 786 ldns_rr_set_rd_count(ldns_rr *rr, size_t count)
 787 {
 788         rr->_rd_count = count;
 789 }
 790
 791 void
 792 ldns_rr_set_type(ldns_rr *rr, ldns_rr_type rr_type)
 793 {
 794         rr->_rr_type = rr_type;
 795 }
 796
 797 void
 798 ldns_rr_set_class(ldns_rr *rr, ldns_rr_class rr_class)
 799 {
 800         rr->_rr_class = rr_class;
 801 }
 802
 803 ldns_rdf *
 804 ldns_rr_set_rdf(ldns_rr *rr, const ldns_rdf *f, size_t position)
 805 {
 806         size_t rd_count;
 807         ldns_rdf *pop;
 808
 809         rd_count = ldns_rr_rd_count(rr);
 810         if (position < rd_count) {
 811                 /* dicard the old one */
 812                 pop = rr->_rdata_fields[position];
 813                 rr->_rdata_fields[position] = (ldns_rdf*)f;
 814                 return pop;
 815         } else {
 816                 return NULL;
 817         }
 818 }
 819
 820 bool
 821 ldns_rr_push_rdf(ldns_rr *rr, const ldns_rdf *f)
 822 {
 823         size_t rd_count;
 824         ldns_rdf **rdata_fields;
 825
 826         rd_count = ldns_rr_rd_count(rr);
 827
 828         /* grow the array */
 829         rdata_fields = LDNS_XREALLOC(
 830                 rr->_rdata_fields, ldns_rdf *, rd_count + 1);
 831         if (!rdata_fields) {
 832                 return false;
 833         }
 834
 835         /* add the new member */
 836         rr->_rdata_fields = rdata_fields;
 837         rr->_rdata_fields[rd_count] = (ldns_rdf*)f;
 838
 839         ldns_rr_set_rd_count(rr, rd_count + 1);
 840         return true;
 841 }
 842
 843 ldns_rdf *
 844 ldns_rr_pop_rdf(ldns_rr *rr)
 845 {
 846         size_t rd_count;
 847         ldns_rdf *pop;
 848         ldns_rdf** newrd;
 849
 850         rd_count = ldns_rr_rd_count(rr);
 851
 852         if (rd_count == 0) {
 853                 return NULL;
 854         }
 855
 856         pop = rr->_rdata_fields[rd_count - 1];
 857
 858         /* try to shrink the array */
 859         if(rd_count > 1) {
 860                 newrd = LDNS_XREALLOC(
 861                         rr->_rdata_fields, ldns_rdf *, rd_count - 1);
 862                 if(newrd)
 863                         rr->_rdata_fields = newrd;
 864         } else {
 865                 LDNS_FREE(rr->_rdata_fields);
 866         }
 867
 868         ldns_rr_set_rd_count(rr, rd_count - 1);
 869         return pop;
 870 }
 871
 872 ldns_rdf *
 873 ldns_rr_rdf(const ldns_rr *rr, size_t nr)
 874 {
 875         if (rr && nr < ldns_rr_rd_count(rr)) {
 876                 return rr->_rdata_fields[nr];
 877         } else {
 878                 return NULL;
 879         }
 880 }
 881
 882 ldns_rdf *
 883 ldns_rr_owner(const ldns_rr *rr)
 884 {
 885         return rr->_owner;
 886 }
 887
 888 bool
 889 ldns_rr_is_question(const ldns_rr *rr)
 890 {
 891    return rr->_rr_question;
 892 }
 893
 894 uint32_t
 895 ldns_rr_ttl(const ldns_rr *rr)
 896 {
 897         return rr->_ttl;
 898 }
 899
 900 size_t
 901 ldns_rr_rd_count(const ldns_rr *rr)
 902 {
 903         return rr->_rd_count;
 904 }
 905
 906 ldns_rr_type
 907 ldns_rr_get_type(const ldns_rr *rr)
 908 {
 909         return rr->_rr_type;
 910 }
 911
 912 ldns_rr_class
 913 ldns_rr_get_class(const ldns_rr *rr)
 914 {
 915         return rr->_rr_class;
 916 }
 917
 918 /* rr_lists */
 919
 920 size_t
 921 ldns_rr_list_rr_count(const ldns_rr_list *rr_list)
 922 {
 923         if (rr_list) {
 924                 return rr_list->_rr_count;
 925         } else {
 926                 return 0;
 927         }
 928 }
 929
 930 ldns_rr *
 931 ldns_rr_list_set_rr(ldns_rr_list *rr_list, const ldns_rr *r, size_t count)
 932 {
 933         ldns_rr *old;
 934
 935         if (count > ldns_rr_list_rr_count(rr_list)) {
 936                 return NULL;
 937         }
 938
 939         old = ldns_rr_list_rr(rr_list, count);
 940
 941         /* overwrite old's pointer */
 942         rr_list->_rrs[count] = (ldns_rr*)r;
 943         return old;
 944 }
 945
 946 void
 947 ldns_rr_list_set_rr_count(ldns_rr_list *rr_list, size_t count)
 948 {
 949         assert(count <= rr_list->_rr_capacity);
 950         rr_list->_rr_count = count;
 951 }
 952
 953 ldns_rr *
 954 ldns_rr_list_rr(const ldns_rr_list *rr_list, size_t nr)
 955 {
 956         if (nr < ldns_rr_list_rr_count(rr_list)) {
 957                 return rr_list->_rrs[nr];
 958         } else {
 959                 return NULL;
 960         }
 961 }
 962
 963 ldns_rr_list *
 964 ldns_rr_list_new(void)
 965 {
 966         ldns_rr_list *rr_list = LDNS_MALLOC(ldns_rr_list);
 967         if(!rr_list) return NULL;
 968         rr_list->_rr_count = 0;
 969         rr_list->_rr_capacity = 0;
 970         rr_list->_rrs = NULL;
 971         return rr_list;
 972 }
 973
 974 void
 975 ldns_rr_list_free(ldns_rr_list *rr_list)
 976 {
 977         if (rr_list) {
 978                 LDNS_FREE(rr_list->_rrs);
 979                 LDNS_FREE(rr_list);
 980         }
 981 }
 982
 983 void
 984 ldns_rr_list_deep_free(ldns_rr_list *rr_list)
 985 {
 986         size_t i;
 987
 988         if (rr_list) {
 989                 for (i=0; i < ldns_rr_list_rr_count(rr_list); i++) {
 990                         ldns_rr_free(ldns_rr_list_rr(rr_list, i));
 991                 }
 992                 LDNS_FREE(rr_list->_rrs);
 993                 LDNS_FREE(rr_list);
 994         }
 995 }
 996
 997
 998 /* add right to left. So we modify *left! */
 999 bool
1000 ldns_rr_list_cat(ldns_rr_list *left, ldns_rr_list *right)
1001 {
1002         size_t r_rr_count;
1003         size_t i;
1004
1005         if (!left) {
1006                 return false;
1007         }
1008
1009         if (right) {
1010                 r_rr_count = ldns_rr_list_rr_count(right);
1011         } else {
1012                 r_rr_count = 0;
1013         }
1014
1015         /* push right to left */
1016         for(i = 0; i < r_rr_count; i++) {
1017                 ldns_rr_list_push_rr(left, ldns_rr_list_rr(right, i));
1018         }
1019         return true;
1020 }
1021
1022 ldns_rr_list *
1023 ldns_rr_list_cat_clone(ldns_rr_list *left, ldns_rr_list *right)
1024 {
1025         size_t l_rr_count;
1026         size_t r_rr_count;
1027         size_t i;
1028         ldns_rr_list *cat;
1029
1030         if (left) {
1031                 l_rr_count = ldns_rr_list_rr_count(left);
1032         } else {
1033                 return ldns_rr_list_clone(right);
1034         }
1035
1036         if (right) {
1037                 r_rr_count = ldns_rr_list_rr_count(right);
1038         } else {
1039                 r_rr_count = 0;
1040         }
1041
1042         cat = ldns_rr_list_new();
1043
1044         if (!cat) {
1045                 return NULL;
1046         }
1047
1048         /* left */
1049         for(i = 0; i < l_rr_count; i++) {
1050                 ldns_rr_list_push_rr(cat,
1051                                 ldns_rr_clone(ldns_rr_list_rr(left, i)));
1052         }
1053         /* right */
1054         for(i = 0; i < r_rr_count; i++) {
1055                 ldns_rr_list_push_rr(cat,
1056                                 ldns_rr_clone(ldns_rr_list_rr(right, i)));
1057         }
1058         return cat;
1059 }
1060
1061 ldns_rr_list *
1062 ldns_rr_list_subtype_by_rdf(ldns_rr_list *l, ldns_rdf *r, size_t pos)
1063 {
1064         size_t i;
1065         ldns_rr_list *subtyped;
1066         ldns_rdf *list_rdf;
1067
1068         subtyped = ldns_rr_list_new();
1069
1070         for(i = 0; i < ldns_rr_list_rr_count(l); i++) {
1071                 list_rdf = ldns_rr_rdf(
1072                         ldns_rr_list_rr(l, i),
1073                         pos);
1074                 if (!list_rdf) {
1075                         /* pos is too large or any other error */
1076                         ldns_rr_list_deep_free(subtyped);
1077                         return NULL;
1078                 }
1079
1080                 if (ldns_rdf_compare(list_rdf, r) == 0) {
1081                         /* a match */
1082                         ldns_rr_list_push_rr(subtyped,
1083                                         ldns_rr_clone(ldns_rr_list_rr(l, i)));
1084                 }
1085         }
1086
1087         if (ldns_rr_list_rr_count(subtyped) > 0) {
1088                 return subtyped;
1089         } else {
1090                 ldns_rr_list_free(subtyped);
1091                 return NULL;
1092         }
1093 }
1094
1095 bool
1096 ldns_rr_list_push_rr(ldns_rr_list *rr_list, const ldns_rr *rr)
1097 {
1098         size_t rr_count;
1099         size_t cap;
1100
1101         rr_count = ldns_rr_list_rr_count(rr_list);
1102         cap = rr_list->_rr_capacity;
1103
1104         /* grow the array */
1105         if(rr_count+1 > cap) {
1106                 ldns_rr **rrs;
1107
1108                 if(cap == 0)
1109                         cap = LDNS_RRLIST_INIT;  /* initial list size */
1110                 else    cap *= 2;
1111                 rrs = LDNS_XREALLOC(rr_list->_rrs, ldns_rr *, cap);
1112                 if (!rrs) {
1113                         return false;
1114                 }
1115                 rr_list->_rrs = rrs;
1116                 rr_list->_rr_capacity = cap;
1117         }
1118
1119         /* add the new member */
1120         rr_list->_rrs[rr_count] = (ldns_rr*)rr;
1121
1122         ldns_rr_list_set_rr_count(rr_list, rr_count + 1);
1123         return true;
1124 }
1125
1126 bool
1127 ldns_rr_list_push_rr_list(ldns_rr_list *rr_list, const ldns_rr_list *push_list)
1128 {
1129         size_t i;
1130
1131         for(i = 0; i < ldns_rr_list_rr_count(push_list); i++) {
1132                 if (!ldns_rr_list_push_rr(rr_list,
1133                                 ldns_rr_list_rr(push_list, i))) {
1134                         return false;
1135                 }
1136         }
1137         return true;
1138 }
1139
1140 ldns_rr *
1141 ldns_rr_list_pop_rr(ldns_rr_list *rr_list)
1142 {
1143         size_t rr_count;
1144         size_t cap;
1145         ldns_rr *pop;
1146
1147         rr_count = ldns_rr_list_rr_count(rr_list);
1148
1149         if (rr_count == 0) {
1150                 return NULL;
1151         }
1152
1153         cap = rr_list->_rr_capacity;
1154         pop = ldns_rr_list_rr(rr_list, rr_count - 1);
1155
1156         /* shrink the array */
1157         if(cap > LDNS_RRLIST_INIT && rr_count-1 <= cap/2) {
1158                 ldns_rr** a;
1159                 cap /= 2;
1160                 a = LDNS_XREALLOC(rr_list->_rrs, ldns_rr *, cap);
1161                 if(a) {
1162                         rr_list->_rrs = a;
1163                         rr_list->_rr_capacity = cap;
1164                 }
1165         }
1166
1167         ldns_rr_list_set_rr_count(rr_list, rr_count - 1);
1168
1169         return pop;
1170 }
1171
1172 ldns_rr_list *
1173 ldns_rr_list_pop_rr_list(ldns_rr_list *rr_list, size_t howmany)
1174 {
1175         /* pop a number of rr's and put them in a rr_list */
1176         ldns_rr_list *popped;
1177         ldns_rr *p;
1178         size_t i = howmany;
1179
1180         popped = ldns_rr_list_new();
1181
1182         if (!popped) {
1183                 return NULL;
1184         }
1185
1186
1187         while(i > 0 &&
1188                         (p = ldns_rr_list_pop_rr(rr_list)) != NULL) {
1189                 ldns_rr_list_push_rr(popped, p);
1190                 i--;
1191         }
1192
1193         if (i == howmany) { /* so i <= 0 */
1194                 ldns_rr_list_free(popped);
1195                 return NULL;
1196         } else {
1197                 return popped;
1198         }
1199 }
1200
1201
1202 bool
1203 ldns_rr_list_contains_rr(const ldns_rr_list *rr_list, ldns_rr *rr)
1204 {
1205         size_t i;
1206
1207         if (!rr_list || !rr || ldns_rr_list_rr_count(rr_list) == 0) {
1208                 return false;
1209         }
1210
1211         for (i = 0; i < ldns_rr_list_rr_count(rr_list); i++) {
1212                 if (rr == ldns_rr_list_rr(rr_list, i)) {
1213                         return true;
1214                 } else if (ldns_rr_compare(rr, ldns_rr_list_rr(rr_list, i)) == 0) {
1215                         return true;
1216                 }
1217         }
1218         return false;
1219 }
1220
1221 bool
1222 ldns_is_rrset(ldns_rr_list *rr_list)
1223 {
1224         ldns_rr_type t;
1225         ldns_rr_class c;
1226         ldns_rdf *o;
1227         ldns_rr *tmp;
1228         size_t i;
1229
1230         if (!rr_list || ldns_rr_list_rr_count(rr_list) == 0) {
1231                 return false;
1232         }
1233
1234         tmp = ldns_rr_list_rr(rr_list, 0);
1235
1236         t = ldns_rr_get_type(tmp);
1237         c = ldns_rr_get_class(tmp);
1238         o = ldns_rr_owner(tmp);
1239
1240         /* compare these with the rest of the rr_list, start with 1 */
1241         for (i = 1; i < ldns_rr_list_rr_count(rr_list); i++) {
1242                 tmp = ldns_rr_list_rr(rr_list, i);
1243                 if (t != ldns_rr_get_type(tmp)) {
1244                         return false;
1245                 }
1246                 if (c != ldns_rr_get_class(tmp)) {
1247                         return false;
1248                 }
1249                 if (ldns_rdf_compare(o, ldns_rr_owner(tmp)) != 0) {
1250                         return false;
1251                 }
1252         }
1253         return true;
1254 }
1255
1256 bool
1257 ldns_rr_set_push_rr(ldns_rr_list *rr_list, ldns_rr *rr)
1258 {
1259         size_t rr_count;
1260         size_t i;
1261         ldns_rr *last;
1262
1263         assert(rr != NULL);
1264
1265         rr_count = ldns_rr_list_rr_count(rr_list);
1266
1267         if (rr_count == 0) {
1268                 /* nothing there, so checking it is
1269                  * not needed */
1270                 return ldns_rr_list_push_rr(rr_list, rr);
1271         } else {
1272                 /* check with the final rr in the rr_list */
1273                 last = ldns_rr_list_rr(rr_list, rr_count - 1);
1274
1275                 if (ldns_rr_get_class(last) != ldns_rr_get_class(rr)) {
1276                         return false;
1277                 }
1278                 if (ldns_rr_get_type(last) != ldns_rr_get_type(rr)) {
1279                         return false;
1280                 }
1281                 /* only check if not equal to RRSIG */
1282                 if (ldns_rr_get_type(rr) != LDNS_RR_TYPE_RRSIG) {
1283                         if (ldns_rr_ttl(last) != ldns_rr_ttl(rr)) {
1284                                 return false;
1285                         }
1286                 }
1287                 if (ldns_rdf_compare(ldns_rr_owner(last),
1288                                         ldns_rr_owner(rr)) != 0) {
1289                         return false;
1290                 }
1291                 /* ok, still alive - check if the rr already
1292                  * exists - if so, dont' add it */
1293                 for(i = 0; i < rr_count; i++) {
1294                         if(ldns_rr_compare(
1295                                         ldns_rr_list_rr(rr_list, i), rr) == 0) {
1296                                 return false;
1297                         }
1298                 }
1299                 /* it's safe, push it */
1300                 return ldns_rr_list_push_rr(rr_list, rr);
1301         }
1302 }
1303
1304 ldns_rr *
1305 ldns_rr_set_pop_rr(ldns_rr_list *rr_list)
1306 {
1307         return ldns_rr_list_pop_rr(rr_list);
1308 }
1309
1310 ldns_rr_list *
1311 ldns_rr_list_pop_rrset(ldns_rr_list *rr_list)
1312 {
1313         ldns_rr_list *rrset;
1314         ldns_rr *last_rr = NULL;
1315         ldns_rr *next_rr;
1316
1317         if (!rr_list) {
1318                 return NULL;
1319         }
1320
1321         rrset = ldns_rr_list_new();
1322         if (!last_rr) {
1323                 last_rr = ldns_rr_list_pop_rr(rr_list);
1324                 if (!last_rr) {
1325                         ldns_rr_list_free(rrset);
1326                         return NULL;
1327                 } else {
1328                         ldns_rr_list_push_rr(rrset, last_rr);
1329                 }
1330         }
1331
1332         if (ldns_rr_list_rr_count(rr_list) > 0) {
1333                 next_rr = ldns_rr_list_rr(rr_list, ldns_rr_list_rr_count(rr_list) - 1);
1334         } else {
1335                 next_rr = NULL;
1336         }
1337
1338         while (next_rr) {
1339                 if (
1340                         ldns_rdf_compare(ldns_rr_owner(next_rr),
1341                                          ldns_rr_owner(last_rr)) == 0
1342                         &&
1343                         ldns_rr_get_type(next_rr) == ldns_rr_get_type(last_rr)
1344                         &&
1345                         ldns_rr_get_class(next_rr) == ldns_rr_get_class(last_rr)
1346                    ) {
1347                         ldns_rr_list_push_rr(rrset, ldns_rr_list_pop_rr(rr_list));
1348                         if (ldns_rr_list_rr_count(rr_list) > 0) {
1349                                 last_rr = next_rr;
1350                                 next_rr = ldns_rr_list_rr(rr_list, ldns_rr_list_rr_count(rr_list) - 1);
1351                         } else {
1352                                 next_rr = NULL;
1353                         }
1354                 } else {
1355                         next_rr = NULL;
1356                 }
1357         }
1358
1359         return rrset;
1360 }
1361
1362 ldns_rr *
1363 ldns_rr_clone(const ldns_rr *rr)
1364 {
1365         size_t i;
1366         ldns_rr *new_rr;
1367
1368         if (!rr) {
1369                 return NULL;
1370         }
1371
1372         new_rr = ldns_rr_new();
1373         if (!new_rr) {
1374                 return NULL;
1375         }
1376         if (ldns_rr_owner(rr)) {
1377                 ldns_rr_set_owner(new_rr, ldns_rdf_clone(ldns_rr_owner(rr)));
1378         }
1379         ldns_rr_set_ttl(new_rr, ldns_rr_ttl(rr));
1380         ldns_rr_set_type(new_rr, ldns_rr_get_type(rr));
1381         ldns_rr_set_class(new_rr, ldns_rr_get_class(rr));
1382         ldns_rr_set_question(new_rr, ldns_rr_is_question(rr));
1383
1384         for (i = 0; i < ldns_rr_rd_count(rr); i++) {
1385                 if (ldns_rr_rdf(rr,i)) {
1386                         ldns_rr_push_rdf(new_rr, ldns_rdf_clone(ldns_rr_rdf(rr, i)));
1387                 }
1388         }
1389
1390         return new_rr;
1391 }
1392
1393 ldns_rr_list *
1394 ldns_rr_list_clone(const ldns_rr_list *rrlist)
1395 {
1396         size_t i;
1397         ldns_rr_list *new_list;
1398         ldns_rr *r;
1399
1400         if (!rrlist) {
1401                 return NULL;
1402         }
1403
1404         new_list = ldns_rr_list_new();
1405         if (!new_list) {
1406                 return NULL;
1407         }
1408         for (i = 0; i < ldns_rr_list_rr_count(rrlist); i++) {
1409                 r = ldns_rr_clone(
1410                         ldns_rr_list_rr(rrlist, i)
1411                     );
1412                 if (!r) {
1413                         /* huh, failure in cloning */
1414                         ldns_rr_list_deep_free(new_list);
1415                         return NULL;
1416                 }
1417                 ldns_rr_list_push_rr(new_list, r);
1418         }
1419         return new_list;
1420 }
1421
1422
1423 static int
1424 qsort_schwartz_rr_compare(const void *a, const void *b)
1425 {
1426         int result = 0;
1427         ldns_rr *rr1, *rr2;
1428         ldns_buffer *rr1_buf, *rr2_buf;
1429         struct ldns_schwartzian_compare_struct *sa = *(struct ldns_schwartzian_compare_struct **) a;
1430         struct ldns_schwartzian_compare_struct *sb = *(struct ldns_schwartzian_compare_struct **) b;
1431         /* if we are doing 2wire, we need to do lowercasing on the dname (and maybe on the rdata)
1432          * this must be done for comparison only, so we need to have a temp var for both buffers,
1433          * which is only used when the transformed object value isn't there yet
1434          */
1435         ldns_rr *canonical_a, *canonical_b;
1436
1437         rr1 = (ldns_rr *) sa->original_object;
1438         rr2 = (ldns_rr *) sb->original_object;
1439
1440         result = ldns_rr_compare_no_rdata(rr1, rr2);
1441
1442         if (result == 0) {
1443                 if (!sa->transformed_object) {
1444                         canonical_a = ldns_rr_clone(sa->original_object);
1445                         ldns_rr2canonical(canonical_a);
1446                         sa->transformed_object = ldns_buffer_new(ldns_rr_uncompressed_size(canonical_a));
1447                         if (ldns_rr2buffer_wire(sa->transformed_object, canonical_a, LDNS_SECTION_ANY) != LDNS_STATUS_OK) {
1448                                 ldns_buffer_free((ldns_buffer *)sa->transformed_object);
1449                                 sa->transformed_object = NULL;
1450                                 ldns_rr_free(canonical_a);
1451                                 return 0;
1452                         }
1453                         ldns_rr_free(canonical_a);
1454                 }
1455                 if (!sb->transformed_object) {
1456                         canonical_b = ldns_rr_clone(sb->original_object);
1457                         ldns_rr2canonical(canonical_b);
1458                         sb->transformed_object = ldns_buffer_new(ldns_rr_uncompressed_size(canonical_b));
1459                         if (ldns_rr2buffer_wire(sb->transformed_object, canonical_b, LDNS_SECTION_ANY) != LDNS_STATUS_OK) {
1460                                 ldns_buffer_free((ldns_buffer *)sa->transformed_object);
1461                                 ldns_buffer_free((ldns_buffer *)sb->transformed_object);
1462                                 sa->transformed_object = NULL;
1463                                 sb->transformed_object = NULL;
1464                                 ldns_rr_free(canonical_b);
1465                                 return 0;
1466                         }
1467                         ldns_rr_free(canonical_b);
1468                 }
1469                 rr1_buf = (ldns_buffer *) sa->transformed_object;
1470                 rr2_buf = (ldns_buffer *) sb->transformed_object;
1471
1472                 result = ldns_rr_compare_wire(rr1_buf, rr2_buf);
1473         }
1474
1475         return result;
1476 }
1477
1478 void
1479 ldns_rr_list_sort(ldns_rr_list *unsorted)
1480 {
1481         struct ldns_schwartzian_compare_struct **sortables;
1482         size_t item_count;
1483         size_t i;
1484
1485         if (unsorted) {
1486                 item_count = ldns_rr_list_rr_count(unsorted);
1487
1488                 sortables = LDNS_XMALLOC(struct ldns_schwartzian_compare_struct *,
1489                                          item_count);
1490                 if(!sortables) return; /* no way to return error */
1491                 for (i = 0; i < item_count; i++) {
1492                         sortables[i] = LDNS_XMALLOC(struct ldns_schwartzian_compare_struct, 1);
1493                         if(!sortables[i]) {
1494                                 /* free the allocated parts */
1495                                 while(i>0) {
1496                                         i--;
1497                                         LDNS_FREE(sortables[i]);
1498                                 }
1499                                 /* no way to return error */
1500                                 LDNS_FREE(sortables);
1501                                 return;
1502                         }
1503                         sortables[i]->original_object = ldns_rr_list_rr(unsorted, i);
1504                         sortables[i]->transformed_object = NULL;
1505                 }
1506                 qsort(sortables,
1507                       item_count,
1508                       sizeof(struct ldns_schwartzian_compare_struct *),
1509                       qsort_schwartz_rr_compare);
1510                 for (i = 0; i < item_count; i++) {
1511                         unsorted->_rrs[i] = sortables[i]->original_object;
1512                         if (sortables[i]->transformed_object) {
1513                                 ldns_buffer_free(sortables[i]->transformed_object);
1514                         }
1515                         LDNS_FREE(sortables[i]);
1516                 }
1517                 LDNS_FREE(sortables);
1518         }
1519 }
1520
1521 int
1522 ldns_rr_compare_no_rdata(const ldns_rr *rr1, const ldns_rr *rr2)
1523 {
1524         size_t rr1_len;
1525         size_t rr2_len;
1526         size_t offset;
1527
1528         assert(rr1 != NULL);
1529         assert(rr2 != NULL);
1530
1531         rr1_len = ldns_rr_uncompressed_size(rr1);
1532         rr2_len = ldns_rr_uncompressed_size(rr2);
1533
1534         if (ldns_dname_compare(ldns_rr_owner(rr1), ldns_rr_owner(rr2)) < 0) {
1535                 return -1;
1536         } else if (ldns_dname_compare(ldns_rr_owner(rr1), ldns_rr_owner(rr2)) > 0) {
1537                 return 1;
1538         }
1539
1540         /* should return -1 if rr1 comes before rr2, so need to do rr1 - rr2, not rr2 - rr1 */
1541         if (ldns_rr_get_class(rr1) != ldns_rr_get_class(rr2)) {
1542             return ldns_rr_get_class(rr1) - ldns_rr_get_class(rr2);
1543         }
1544
1545         /* should return -1 if rr1 comes before rr2, so need to do rr1 - rr2, not rr2 - rr1 */
1546         if (ldns_rr_get_type(rr1) != ldns_rr_get_type(rr2)) {
1547             return ldns_rr_get_type(rr1) - ldns_rr_get_type(rr2);
1548         }
1549
1550         /* offset is the owername length + ttl + type + class + rdlen == start of wire format rdata */
1551         offset = ldns_rdf_size(ldns_rr_owner(rr1)) + 4 + 2 + 2 + 2;
1552         /* if either record doesn't have any RDATA... */
1553         if (offset > rr1_len || offset > rr2_len) {
1554             if (rr1_len == rr2_len) {
1555               return 0;
1556             }
1557             return ((int) rr2_len - (int) rr1_len);
1558         }
1559
1560         return 0;
1561 }
1562
1563 int ldns_rr_compare_wire(ldns_buffer *rr1_buf, ldns_buffer *rr2_buf)
1564 {
1565         size_t rr1_len, rr2_len, min_len, i, offset;
1566
1567         rr1_len = ldns_buffer_capacity(rr1_buf);
1568         rr2_len = ldns_buffer_capacity(rr2_buf);
1569
1570         /* jump past dname (checked in earlier part)
1571          * and especially past TTL */
1572         offset = 0;
1573         while (offset < rr1_len && *ldns_buffer_at(rr1_buf, offset) != 0) {
1574           offset += *ldns_buffer_at(rr1_buf, offset) + 1;
1575         }
1576         /* jump to rdata section (PAST the rdata length field, otherwise
1577            rrs with different lengths might be sorted erroneously */
1578         offset += 11;
1579            min_len = (rr1_len < rr2_len) ? rr1_len : rr2_len;
1580         /* Compare RRs RDATA byte for byte. */
1581         for(i = offset; i < min_len; i++) {
1582                 if (*ldns_buffer_at(rr1_buf,i) < *ldns_buffer_at(rr2_buf,i)) {
1583                         return -1;
1584                 } else if (*ldns_buffer_at(rr1_buf,i) > *ldns_buffer_at(rr2_buf,i)) {
1585                         return +1;
1586                 }
1587         }
1588
1589         /* If both RDATAs are the same up to min_len, then the shorter one sorts first. */
1590         if (rr1_len < rr2_len) {
1591                 return -1;
1592         } else if (rr1_len > rr2_len) {
1593                 return +1;
1594         }
1595         /* The RDATAs are equal. */
1596         return 0;
1597
1598 }
1599
1600 int
1601 ldns_rr_compare(const ldns_rr *rr1, const ldns_rr *rr2)
1602 {
1603         int result;
1604         size_t rr1_len, rr2_len;
1605
1606         ldns_buffer *rr1_buf;
1607         ldns_buffer *rr2_buf;
1608
1609         result = ldns_rr_compare_no_rdata(rr1, rr2);
1610         if (result == 0) {
1611                 rr1_len = ldns_rr_uncompressed_size(rr1);
1612                 rr2_len = ldns_rr_uncompressed_size(rr2);
1613
1614                 rr1_buf = ldns_buffer_new(rr1_len);
1615                 rr2_buf = ldns_buffer_new(rr2_len);
1616
1617                 if (ldns_rr2buffer_wire_canonical(rr1_buf,
1618                                                                     rr1,
1619                                                                     LDNS_SECTION_ANY)
1620                     != LDNS_STATUS_OK) {
1621                         ldns_buffer_free(rr1_buf);
1622                         ldns_buffer_free(rr2_buf);
1623                         return 0;
1624                 }
1625                 if (ldns_rr2buffer_wire_canonical(rr2_buf,
1626                                                                     rr2,
1627                                                                     LDNS_SECTION_ANY)
1628                     != LDNS_STATUS_OK) {
1629                         ldns_buffer_free(rr1_buf);
1630                         ldns_buffer_free(rr2_buf);
1631                         return 0;
1632                 }
1633
1634                 result = ldns_rr_compare_wire(rr1_buf, rr2_buf);
1635
1636                 ldns_buffer_free(rr1_buf);
1637                 ldns_buffer_free(rr2_buf);
1638         }
1639
1640         return result;
1641 }
1642
1643 /* convert dnskey to a ds with the given algorithm,
1644  * then compare the result with the given ds */
1645 static int
1646 ldns_rr_compare_ds_dnskey(ldns_rr *ds,
1647                           ldns_rr *dnskey)
1648 {
1649         ldns_rr *ds_gen;
1650         bool result = false;
1651         ldns_hash algo;
1652
1653         if (!dnskey || !ds ||
1654             ldns_rr_get_type(ds) != LDNS_RR_TYPE_DS ||
1655             ldns_rr_get_type(dnskey) != LDNS_RR_TYPE_DNSKEY) {
1656                 return false;
1657         }
1658
1659         if (ldns_rr_rdf(ds, 2) == NULL) {
1660                 return false;
1661         }
1662         algo = ldns_rdf2native_int8(ldns_rr_rdf(ds, 2));
1663
1664         ds_gen = ldns_key_rr2ds(dnskey, algo);
1665         if (ds_gen) {
1666                 result = ldns_rr_compare(ds, ds_gen) == 0;
1667                 ldns_rr_free(ds_gen);
1668         }
1669         return result;
1670 }
1671
1672 bool
1673 ldns_rr_compare_ds(const ldns_rr *orr1, const ldns_rr *orr2)
1674 {
1675         bool result;
1676         ldns_rr *rr1 = ldns_rr_clone(orr1);
1677         ldns_rr *rr2 = ldns_rr_clone(orr2);
1678
1679         /* set ttls to zero */
1680         ldns_rr_set_ttl(rr1, 0);
1681         ldns_rr_set_ttl(rr2, 0);
1682
1683         if (ldns_rr_get_type(rr1) == LDNS_RR_TYPE_DS &&
1684             ldns_rr_get_type(rr2) == LDNS_RR_TYPE_DNSKEY) {
1685                 result = ldns_rr_compare_ds_dnskey(rr1, rr2);
1686         } else if (ldns_rr_get_type(rr1) == LDNS_RR_TYPE_DNSKEY &&
1687             ldns_rr_get_type(rr2) == LDNS_RR_TYPE_DS) {
1688                 result = ldns_rr_compare_ds_dnskey(rr2, rr1);
1689         } else {
1690                 result = (ldns_rr_compare(rr1, rr2) == 0);
1691         }
1692
1693         ldns_rr_free(rr1);
1694         ldns_rr_free(rr2);
1695
1696         return result;
1697 }
1698
1699 int
1700 ldns_rr_list_compare(const ldns_rr_list *rrl1, const ldns_rr_list *rrl2)
1701 {
1702         size_t i = 0;
1703         int rr_cmp;
1704
1705         assert(rrl1 != NULL);
1706         assert(rrl2 != NULL);
1707
1708         for (i = 0; i < ldns_rr_list_rr_count(rrl1) && i < ldns_rr_list_rr_count(rrl2); i++) {
1709                 rr_cmp = ldns_rr_compare(ldns_rr_list_rr(rrl1, i), ldns_rr_list_rr(rrl2, i));
1710                 if (rr_cmp != 0) {
1711                         return rr_cmp;
1712                 }
1713         }
1714
1715         if (i == ldns_rr_list_rr_count(rrl1) &&
1716             i != ldns_rr_list_rr_count(rrl2)) {
1717                 return 1;
1718         } else if (i == ldns_rr_list_rr_count(rrl2) &&
1719                    i != ldns_rr_list_rr_count(rrl1)) {
1720                 return -1;
1721         } else {
1722                 return 0;
1723         }
1724 }
1725
1726 size_t
1727 ldns_rr_uncompressed_size(const ldns_rr *r)
1728 {
1729         size_t rrsize;
1730         size_t i;
1731
1732         rrsize = 0;
1733         /* add all the rdf sizes */
1734         for(i = 0; i < ldns_rr_rd_count(r); i++) {
1735                 rrsize += ldns_rdf_size(ldns_rr_rdf(r, i));
1736         }
1737         /* ownername */
1738         rrsize += ldns_rdf_size(ldns_rr_owner(r));
1739         rrsize += LDNS_RR_OVERHEAD;
1740         return rrsize;
1741 }
1742
1743 void
1744 ldns_rr2canonical(ldns_rr *rr)
1745 {
1746         uint16_t i;
1747
1748         if (!rr) {
1749           return;
1750         }
1751
1752         ldns_dname2canonical(ldns_rr_owner(rr));
1753
1754         /*
1755          * lowercase the rdata dnames if the rr type is one
1756          * of the list in chapter 7 of RFC3597
1757          * Also added RRSIG, because a "Signer's Name" should be canonicalized
1758          * too. See dnssec-bis-updates-16. We can add it to this list because
1759          * the "Signer's Name"  is the only dname type rdata field in a RRSIG.
1760          */
1761         switch(ldns_rr_get_type(rr)) {
1762                 case LDNS_RR_TYPE_NS:
1763                 case LDNS_RR_TYPE_MD:
1764                 case LDNS_RR_TYPE_MF:
1765                 case LDNS_RR_TYPE_CNAME:
1766                 case LDNS_RR_TYPE_SOA:
1767                 case LDNS_RR_TYPE_MB:
1768                 case LDNS_RR_TYPE_MG:
1769                 case LDNS_RR_TYPE_MR:
1770                 case LDNS_RR_TYPE_PTR:
1771                 case LDNS_RR_TYPE_MINFO:
1772                 case LDNS_RR_TYPE_MX:
1773                 case LDNS_RR_TYPE_RP:
1774                 case LDNS_RR_TYPE_AFSDB:
1775                 case LDNS_RR_TYPE_RT:
1776                 case LDNS_RR_TYPE_SIG:
1777                 case LDNS_RR_TYPE_PX:
1778                 case LDNS_RR_TYPE_NXT:
1779                 case LDNS_RR_TYPE_NAPTR:
1780                 case LDNS_RR_TYPE_KX:
1781                 case LDNS_RR_TYPE_SRV:
1782                 case LDNS_RR_TYPE_DNAME:
1783                 case LDNS_RR_TYPE_A6:
1784                 case LDNS_RR_TYPE_RRSIG:
1785                         for (i = 0; i < ldns_rr_rd_count(rr); i++) {
1786                                 ldns_dname2canonical(ldns_rr_rdf(rr, i));
1787                         }
1788                         return;
1789                 default:
1790                         /* do nothing */
1791                         return;
1792         }
1793 }
1794
1795 void
1796 ldns_rr_list2canonical(ldns_rr_list *rr_list)
1797 {
1798         size_t i;
1799         for (i = 0; i < ldns_rr_list_rr_count(rr_list); i++) {
1800                 ldns_rr2canonical(ldns_rr_list_rr(rr_list, i));
1801         }
1802 }
1803
1804 uint8_t
1805 ldns_rr_label_count(ldns_rr *rr)
1806 {
1807         if (!rr) {
1808                 return 0;
1809         }
1810         return ldns_dname_label_count(
1811                         ldns_rr_owner(rr));
1812 }
1813
1814 /** \cond */
1815 static const ldns_rdf_type type_0_wireformat[] = { LDNS_RDF_TYPE_UNKNOWN };
1816 static const ldns_rdf_type type_a_wireformat[] = { LDNS_RDF_TYPE_A };
1817 static const ldns_rdf_type type_ns_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1818 static const ldns_rdf_type type_md_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1819 static const ldns_rdf_type type_mf_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1820 static const ldns_rdf_type type_cname_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1821 static const ldns_rdf_type type_soa_wireformat[] = {
1822         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_INT32,
1823         LDNS_RDF_TYPE_PERIOD, LDNS_RDF_TYPE_PERIOD, LDNS_RDF_TYPE_PERIOD,
1824         LDNS_RDF_TYPE_PERIOD
1825 };
1826 static const ldns_rdf_type type_mb_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1827 static const ldns_rdf_type type_mg_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1828 static const ldns_rdf_type type_mr_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1829 static const ldns_rdf_type type_wks_wireformat[] = {
1830         LDNS_RDF_TYPE_A, LDNS_RDF_TYPE_WKS
1831 };
1832 static const ldns_rdf_type type_ptr_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1833 static const ldns_rdf_type type_hinfo_wireformat[] = {
1834         LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_STR
1835 };
1836 static const ldns_rdf_type type_minfo_wireformat[] = {
1837         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_DNAME
1838 };
1839 static const ldns_rdf_type type_mx_wireformat[] = {
1840         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME
1841 };
1842 static const ldns_rdf_type type_rp_wireformat[] = {
1843         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_DNAME
1844 };
1845 static const ldns_rdf_type type_afsdb_wireformat[] = {
1846         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME
1847 };
1848 static const ldns_rdf_type type_x25_wireformat[] = { LDNS_RDF_TYPE_STR };
1849 static const ldns_rdf_type type_isdn_wireformat[] = {
1850         LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_STR
1851 };
1852 static const ldns_rdf_type type_rt_wireformat[] = {
1853         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME
1854 };
1855 static const ldns_rdf_type type_nsap_wireformat[] = {
1856         LDNS_RDF_TYPE_NSAP
1857 };
1858 static const ldns_rdf_type type_nsap_ptr_wireformat[] = {
1859         LDNS_RDF_TYPE_STR
1860 };
1861 static const ldns_rdf_type type_sig_wireformat[] = {
1862         LDNS_RDF_TYPE_TYPE, LDNS_RDF_TYPE_ALG, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT32,
1863         LDNS_RDF_TYPE_TIME, LDNS_RDF_TYPE_TIME, LDNS_RDF_TYPE_INT16,
1864         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_B64
1865 };
1866 static const ldns_rdf_type type_key_wireformat[] = {
1867         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_B64
1868 };
1869 static const ldns_rdf_type type_px_wireformat[] = {
1870         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_DNAME
1871 };
1872 static const ldns_rdf_type type_gpos_wireformat[] = {
1873         LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_STR
1874 };
1875 static const ldns_rdf_type type_aaaa_wireformat[] = { LDNS_RDF_TYPE_AAAA };
1876 static const ldns_rdf_type type_loc_wireformat[] = { LDNS_RDF_TYPE_LOC };
1877 static const ldns_rdf_type type_nxt_wireformat[] = {
1878         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_UNKNOWN
1879 };
1880 static const ldns_rdf_type type_eid_wireformat[] = {
1881         LDNS_RDF_TYPE_HEX
1882 };
1883 static const ldns_rdf_type type_nimloc_wireformat[] = {
1884         LDNS_RDF_TYPE_HEX
1885 };
1886 static const ldns_rdf_type type_srv_wireformat[] = {
1887         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME
1888 };
1889 static const ldns_rdf_type type_atma_wireformat[] = {
1890         LDNS_RDF_TYPE_ATMA
1891 };
1892 static const ldns_rdf_type type_naptr_wireformat[] = {
1893         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_DNAME
1894 };
1895 static const ldns_rdf_type type_kx_wireformat[] = {
1896         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME
1897 };
1898 static const ldns_rdf_type type_cert_wireformat[] = {
1899          LDNS_RDF_TYPE_CERT_ALG, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_ALG, LDNS_RDF_TYPE_B64
1900 };
1901 static const ldns_rdf_type type_a6_wireformat[] = { LDNS_RDF_TYPE_UNKNOWN };
1902 static const ldns_rdf_type type_dname_wireformat[] = { LDNS_RDF_TYPE_DNAME };
1903 static const ldns_rdf_type type_sink_wireformat[] = { LDNS_RDF_TYPE_INT8,
1904         LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_B64
1905 };
1906 static const ldns_rdf_type type_apl_wireformat[] = {
1907         LDNS_RDF_TYPE_APL
1908 };
1909 static const ldns_rdf_type type_ds_wireformat[] = {
1910         LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_ALG, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_HEX
1911 };
1912 static const ldns_rdf_type type_sshfp_wireformat[] = {
1913         LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_HEX
1914 };
1915 static const ldns_rdf_type type_ipseckey_wireformat[] = {
1916         LDNS_RDF_TYPE_IPSECKEY
1917 };
1918 static const ldns_rdf_type type_rrsig_wireformat[] = {
1919         LDNS_RDF_TYPE_TYPE, LDNS_RDF_TYPE_ALG, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT32,
1920         LDNS_RDF_TYPE_TIME, LDNS_RDF_TYPE_TIME, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_B64
1921 };
1922 static const ldns_rdf_type type_nsec_wireformat[] = {
1923         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_NSEC
1924 };
1925 static const ldns_rdf_type type_dhcid_wireformat[] = {
1926         LDNS_RDF_TYPE_B64
1927 };
1928 static const ldns_rdf_type type_talink_wireformat[] = {
1929         LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_DNAME
1930 };
1931 /* nsec3 is some vars, followed by same type of data of nsec */
1932 static const ldns_rdf_type type_nsec3_wireformat[] = {
1933 /*      LDNS_RDF_TYPE_NSEC3_VARS, LDNS_RDF_TYPE_NSEC3_NEXT_OWNER, LDNS_RDF_TYPE_NSEC*/
1934         LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_NSEC3_SALT, LDNS_RDF_TYPE_NSEC3_NEXT_OWNER, LDNS_RDF_TYPE_NSEC
1935 };
1936
1937 static const ldns_rdf_type type_nsec3param_wireformat[] = {
1938 /*      LDNS_RDF_TYPE_NSEC3_PARAMS_VARS*/
1939         LDNS_RDF_TYPE_INT8,
1940         LDNS_RDF_TYPE_INT8,
1941         LDNS_RDF_TYPE_INT16,
1942         LDNS_RDF_TYPE_NSEC3_SALT
1943 };
1944
1945 static const ldns_rdf_type type_dnskey_wireformat[] = {
1946         LDNS_RDF_TYPE_INT16,
1947         LDNS_RDF_TYPE_INT8,
1948         LDNS_RDF_TYPE_ALG,
1949         LDNS_RDF_TYPE_B64
1950 };
1951 static const ldns_rdf_type type_tkey_wireformat[] = {
1952         LDNS_RDF_TYPE_DNAME,
1953         LDNS_RDF_TYPE_TIME,
1954         LDNS_RDF_TYPE_TIME,
1955         LDNS_RDF_TYPE_INT16,
1956         LDNS_RDF_TYPE_INT16,
1957         LDNS_RDF_TYPE_INT16_DATA,
1958         LDNS_RDF_TYPE_INT16_DATA,
1959 };
1960 static const ldns_rdf_type type_tsig_wireformat[] = {
1961         LDNS_RDF_TYPE_DNAME,
1962         LDNS_RDF_TYPE_TSIGTIME,
1963         LDNS_RDF_TYPE_INT16,
1964         LDNS_RDF_TYPE_INT16_DATA,
1965         LDNS_RDF_TYPE_INT16,
1966         LDNS_RDF_TYPE_INT16,
1967         LDNS_RDF_TYPE_INT16_DATA
1968 };
1969 static const ldns_rdf_type type_tlsa_wireformat[] = {
1970         LDNS_RDF_TYPE_INT8,
1971         LDNS_RDF_TYPE_INT8,
1972         LDNS_RDF_TYPE_INT8,
1973         LDNS_RDF_TYPE_HEX
1974 };
1975 static const ldns_rdf_type type_hip_wireformat[] = {
1976         LDNS_RDF_TYPE_HIP
1977 };
1978 static const ldns_rdf_type type_nid_wireformat[] = {
1979         LDNS_RDF_TYPE_INT16,
1980         LDNS_RDF_TYPE_ILNP64
1981 };
1982 static const ldns_rdf_type type_l32_wireformat[] = {
1983         LDNS_RDF_TYPE_INT16,
1984         LDNS_RDF_TYPE_A
1985 };
1986 static const ldns_rdf_type type_l64_wireformat[] = {
1987         LDNS_RDF_TYPE_INT16,
1988         LDNS_RDF_TYPE_ILNP64
1989 };
1990 static const ldns_rdf_type type_lp_wireformat[] = {
1991         LDNS_RDF_TYPE_INT16,
1992         LDNS_RDF_TYPE_DNAME
1993 };
1994 static const ldns_rdf_type type_eui48_wireformat[] = {
1995         LDNS_RDF_TYPE_EUI48
1996 };
1997 static const ldns_rdf_type type_eui64_wireformat[] = {
1998         LDNS_RDF_TYPE_EUI64
1999 };
2000 #ifdef RRTYPE_URI
2001 static const ldns_rdf_type type_uri_wireformat[] = {
2002         LDNS_RDF_TYPE_INT16,
2003         LDNS_RDF_TYPE_INT16,
2004         LDNS_RDF_TYPE_LONG_STR
2005 };
2006 #endif
2007 static const ldns_rdf_type type_caa_wireformat[] = {
2008         LDNS_RDF_TYPE_INT8,
2009         LDNS_RDF_TYPE_TAG,
2010         LDNS_RDF_TYPE_LONG_STR
2011 };
2012 /** \endcond */
2013
2014 /** \cond */
2015 /* All RR's defined in 1035 are well known and can thus
2016  * be compressed. See RFC3597. These RR's are:
2017  * CNAME HINFO MB MD MF MG MINFO MR MX NULL NS PTR SOA TXT
2018  */
2019 static ldns_rr_descriptor rdata_field_descriptors[] = {
2020         /* 0 */
2021         { 0, NULL, 0, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2022         /* 1 */
2023         {LDNS_RR_TYPE_A, "A", 1, 1, type_a_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2024         /* 2 */
2025         {LDNS_RR_TYPE_NS, "NS", 1, 1, type_ns_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2026         /* 3 */
2027         {LDNS_RR_TYPE_MD, "MD", 1, 1, type_md_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2028         /* 4 */
2029         {LDNS_RR_TYPE_MF, "MF", 1, 1, type_mf_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2030         /* 5 */
2031         {LDNS_RR_TYPE_CNAME, "CNAME", 1, 1, type_cname_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2032         /* 6 */
2033         {LDNS_RR_TYPE_SOA, "SOA", 7, 7, type_soa_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 2 },
2034         /* 7 */
2035         {LDNS_RR_TYPE_MB, "MB", 1, 1, type_mb_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2036         /* 8 */
2037         {LDNS_RR_TYPE_MG, "MG", 1, 1, type_mg_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2038         /* 9 */
2039         {LDNS_RR_TYPE_MR, "MR", 1, 1, type_mr_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2040         /* 10 */
2041         {LDNS_RR_TYPE_NULL, "NULL", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2042         /* 11 */
2043         {LDNS_RR_TYPE_WKS, "WKS", 2, 2, type_wks_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2044         /* 12 */
2045         {LDNS_RR_TYPE_PTR, "PTR", 1, 1, type_ptr_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2046         /* 13 */
2047         {LDNS_RR_TYPE_HINFO, "HINFO", 2, 2, type_hinfo_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2048         /* 14 */
2049         {LDNS_RR_TYPE_MINFO, "MINFO", 2, 2, type_minfo_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 2 },
2050         /* 15 */
2051         {LDNS_RR_TYPE_MX, "MX", 2, 2, type_mx_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_COMPRESS, 1 },
2052         /* 16 */
2053         {LDNS_RR_TYPE_TXT, "TXT", 1, 0, NULL, LDNS_RDF_TYPE_STR, LDNS_RR_NO_COMPRESS, 0 },
2054         /* 17 */
2055         {LDNS_RR_TYPE_RP, "RP", 2, 2, type_rp_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 2 },
2056         /* 18 */
2057         {LDNS_RR_TYPE_AFSDB, "AFSDB", 2, 2, type_afsdb_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2058         /* 19 */
2059         {LDNS_RR_TYPE_X25, "X25", 1, 1, type_x25_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2060         /* 20 */
2061         {LDNS_RR_TYPE_ISDN, "ISDN", 1, 2, type_isdn_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2062         /* 21 */
2063         {LDNS_RR_TYPE_RT, "RT", 2, 2, type_rt_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2064         /* 22 */
2065         {LDNS_RR_TYPE_NSAP, "NSAP", 1, 1, type_nsap_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2066         /* 23 */
2067         {LDNS_RR_TYPE_NSAP_PTR, "NSAP-PTR", 1, 1, type_nsap_ptr_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2068         /* 24 */
2069         {LDNS_RR_TYPE_SIG, "SIG", 9, 9, type_sig_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2070         /* 25 */
2071         {LDNS_RR_TYPE_KEY, "KEY", 4, 4, type_key_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2072         /* 26 */
2073         {LDNS_RR_TYPE_PX, "PX", 3, 3, type_px_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 2 },
2074         /* 27 */
2075         {LDNS_RR_TYPE_GPOS, "GPOS", 3, 3, type_gpos_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2076         /* 28 */
2077         {LDNS_RR_TYPE_AAAA, "AAAA", 1, 1, type_aaaa_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2078         /* 29 */
2079         {LDNS_RR_TYPE_LOC, "LOC", 1, 1, type_loc_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2080         /* 30 */
2081         {LDNS_RR_TYPE_NXT, "NXT", 2, 2, type_nxt_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2082         /* 31 */
2083         {LDNS_RR_TYPE_EID, "EID", 1, 1, type_eid_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2084         /* 32 */
2085         {LDNS_RR_TYPE_NIMLOC, "NIMLOC", 1, 1, type_nimloc_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2086         /* 33 */
2087         {LDNS_RR_TYPE_SRV, "SRV", 4, 4, type_srv_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2088         /* 34 */
2089         {LDNS_RR_TYPE_ATMA, "ATMA", 1, 1, type_atma_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2090         /* 35 */
2091         {LDNS_RR_TYPE_NAPTR, "NAPTR", 6, 6, type_naptr_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2092         /* 36 */
2093         {LDNS_RR_TYPE_KX, "KX", 2, 2, type_kx_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2094         /* 37 */
2095         {LDNS_RR_TYPE_CERT, "CERT", 4, 4, type_cert_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2096         /* 38 */
2097         {LDNS_RR_TYPE_A6, "A6", 1, 1, type_a6_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2098         /* 39 */
2099         {LDNS_RR_TYPE_DNAME, "DNAME", 1, 1, type_dname_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2100         /* 40 */
2101         {LDNS_RR_TYPE_SINK, "SINK", 1, 1, type_sink_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2102         /* 41 */
2103         {LDNS_RR_TYPE_OPT, "OPT", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2104         /* 42 */
2105         {LDNS_RR_TYPE_APL, "APL", 0, 0, type_apl_wireformat, LDNS_RDF_TYPE_APL, LDNS_RR_NO_COMPRESS, 0 },
2106         /* 43 */
2107         {LDNS_RR_TYPE_DS, "DS", 4, 4, type_ds_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2108         /* 44 */
2109         {LDNS_RR_TYPE_SSHFP, "SSHFP", 3, 3, type_sshfp_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2110         /* 45 */
2111         {LDNS_RR_TYPE_IPSECKEY, "IPSECKEY", 1, 1, type_ipseckey_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2112         /* 46 */
2113         {LDNS_RR_TYPE_RRSIG, "RRSIG", 9, 9, type_rrsig_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2114         /* 47 */
2115         {LDNS_RR_TYPE_NSEC, "NSEC", 1, 2, type_nsec_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2116         /* 48 */
2117         {LDNS_RR_TYPE_DNSKEY, "DNSKEY", 4, 4, type_dnskey_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2118         /* 49 */
2119         {LDNS_RR_TYPE_DHCID, "DHCID", 1, 1, type_dhcid_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2120         /* 50 */
2121         {LDNS_RR_TYPE_NSEC3, "NSEC3", 5, 6, type_nsec3_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2122         /* 51 */
2123         {LDNS_RR_TYPE_NSEC3PARAM, "NSEC3PARAM", 4, 4, type_nsec3param_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2124         /* 52 */
2125         {LDNS_RR_TYPE_TLSA, "TLSA", 4, 4, type_tlsa_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2126
2127 {LDNS_RR_TYPE_NULL, "TYPE53", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2128 {LDNS_RR_TYPE_NULL, "TYPE54", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2129
2130         /* 55
2131          * Hip ends with 0 or more Rendezvous Servers represented as dname's.
2132          * Hence the LDNS_RDF_TYPE_DNAME _variable field and the _maximum field
2133          * set to 0.
2134          */
2135         {LDNS_RR_TYPE_HIP, "HIP", 1, 1, type_hip_wireformat, LDNS_RDF_TYPE_DNAME, LDNS_RR_NO_COMPRESS, 0 },
2136
2137 #ifdef RRTYPE_NINFO
2138         /* 56 */
2139         {LDNS_RR_TYPE_NINFO, "NINFO", 1, 0, NULL, LDNS_RDF_TYPE_STR, LDNS_RR_NO_COMPRESS, 0 },
2140 #else
2141 {LDNS_RR_TYPE_NULL, "TYPE56", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2142 #endif
2143 #ifdef RRTYPE_RKEY
2144         /* 57 */
2145         {LDNS_RR_TYPE_RKEY, "RKEY", 4, 4, type_key_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2146 #else
2147 {LDNS_RR_TYPE_NULL, "TYPE57", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2148 #endif
2149         /* 58 */
2150         {LDNS_RR_TYPE_TALINK, "TALINK", 2, 2, type_talink_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 2 },
2151
2152 #ifdef RRTYPE_CDS
2153         /* 59 */
2154         {LDNS_RR_TYPE_CDS, "CDS", 4, 4, type_ds_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2155 #else
2156 {LDNS_RR_TYPE_NULL, "TYPE59", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2157 #endif
2158
2159 {LDNS_RR_TYPE_NULL, "TYPE60", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2160 {LDNS_RR_TYPE_NULL, "TYPE61", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2161 {LDNS_RR_TYPE_NULL, "TYPE62", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2162 {LDNS_RR_TYPE_NULL, "TYPE63", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2163 {LDNS_RR_TYPE_NULL, "TYPE64", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2164 {LDNS_RR_TYPE_NULL, "TYPE65", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2165 {LDNS_RR_TYPE_NULL, "TYPE66", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2166 {LDNS_RR_TYPE_NULL, "TYPE67", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2167 {LDNS_RR_TYPE_NULL, "TYPE68", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2168 {LDNS_RR_TYPE_NULL, "TYPE69", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2169 {LDNS_RR_TYPE_NULL, "TYPE70", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2170 {LDNS_RR_TYPE_NULL, "TYPE71", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2171 {LDNS_RR_TYPE_NULL, "TYPE72", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2172 {LDNS_RR_TYPE_NULL, "TYPE73", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2173 {LDNS_RR_TYPE_NULL, "TYPE74", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2174 {LDNS_RR_TYPE_NULL, "TYPE75", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2175 {LDNS_RR_TYPE_NULL, "TYPE76", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2176 {LDNS_RR_TYPE_NULL, "TYPE77", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2177 {LDNS_RR_TYPE_NULL, "TYPE78", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2178 {LDNS_RR_TYPE_NULL, "TYPE79", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2179 {LDNS_RR_TYPE_NULL, "TYPE80", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2180 {LDNS_RR_TYPE_NULL, "TYPE81", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2181 {LDNS_RR_TYPE_NULL, "TYPE82", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2182 {LDNS_RR_TYPE_NULL, "TYPE83", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2183 {LDNS_RR_TYPE_NULL, "TYPE84", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2184 {LDNS_RR_TYPE_NULL, "TYPE85", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2185 {LDNS_RR_TYPE_NULL, "TYPE86", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2186 {LDNS_RR_TYPE_NULL, "TYPE87", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2187 {LDNS_RR_TYPE_NULL, "TYPE88", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2188 {LDNS_RR_TYPE_NULL, "TYPE89", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2189 {LDNS_RR_TYPE_NULL, "TYPE90", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2190 {LDNS_RR_TYPE_NULL, "TYPE91", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2191 {LDNS_RR_TYPE_NULL, "TYPE92", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2192 {LDNS_RR_TYPE_NULL, "TYPE93", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2193 {LDNS_RR_TYPE_NULL, "TYPE94", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2194 {LDNS_RR_TYPE_NULL, "TYPE95", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2195 {LDNS_RR_TYPE_NULL, "TYPE96", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2196 {LDNS_RR_TYPE_NULL, "TYPE97", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2197 {LDNS_RR_TYPE_NULL, "TYPE98", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2198
2199         /* 99 */
2200         {LDNS_RR_TYPE_SPF,  "SPF", 1, 0, NULL, LDNS_RDF_TYPE_STR, LDNS_RR_NO_COMPRESS, 0 },
2201
2202         /* UINFO  [IANA-Reserved] */
2203 {LDNS_RR_TYPE_NULL, "TYPE100", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2204         /* UID    [IANA-Reserved] */
2205 {LDNS_RR_TYPE_NULL, "TYPE101", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2206         /* GID    [IANA-Reserved] */
2207 {LDNS_RR_TYPE_NULL, "TYPE102", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2208         /* UNSPEC [IANA-Reserved] */
2209 {LDNS_RR_TYPE_NULL, "TYPE103", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2210
2211         /* 104 */
2212         {LDNS_RR_TYPE_NID, "NID", 2, 2, type_nid_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2213         /* 105 */
2214         {LDNS_RR_TYPE_L32, "L32", 2, 2, type_l32_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2215         /* 106 */
2216         {LDNS_RR_TYPE_L64, "L64", 2, 2, type_l64_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2217         /* 107 */
2218         {LDNS_RR_TYPE_LP, "LP", 2, 2, type_lp_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2219         /* 108 */
2220         {LDNS_RR_TYPE_EUI48, "EUI48", 1, 1, type_eui48_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2221         /* 109 */
2222         {LDNS_RR_TYPE_EUI64, "EUI64", 1, 1, type_eui64_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2223
2224 {LDNS_RR_TYPE_NULL, "TYPE110", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2225 {LDNS_RR_TYPE_NULL, "TYPE111", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2226 {LDNS_RR_TYPE_NULL, "TYPE112", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2227 {LDNS_RR_TYPE_NULL, "TYPE113", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2228 {LDNS_RR_TYPE_NULL, "TYPE114", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2229 {LDNS_RR_TYPE_NULL, "TYPE115", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2230 {LDNS_RR_TYPE_NULL, "TYPE116", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2231 {LDNS_RR_TYPE_NULL, "TYPE117", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2232 {LDNS_RR_TYPE_NULL, "TYPE118", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2233 {LDNS_RR_TYPE_NULL, "TYPE119", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2234 {LDNS_RR_TYPE_NULL, "TYPE120", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2235 {LDNS_RR_TYPE_NULL, "TYPE121", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2236 {LDNS_RR_TYPE_NULL, "TYPE122", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2237 {LDNS_RR_TYPE_NULL, "TYPE123", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2238 {LDNS_RR_TYPE_NULL, "TYPE124", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2239 {LDNS_RR_TYPE_NULL, "TYPE125", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2240 {LDNS_RR_TYPE_NULL, "TYPE126", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2241 {LDNS_RR_TYPE_NULL, "TYPE127", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2242 {LDNS_RR_TYPE_NULL, "TYPE128", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2243 {LDNS_RR_TYPE_NULL, "TYPE129", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2244 {LDNS_RR_TYPE_NULL, "TYPE130", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2245 {LDNS_RR_TYPE_NULL, "TYPE131", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2246 {LDNS_RR_TYPE_NULL, "TYPE132", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2247 {LDNS_RR_TYPE_NULL, "TYPE133", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2248 {LDNS_RR_TYPE_NULL, "TYPE134", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2249 {LDNS_RR_TYPE_NULL, "TYPE135", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2250 {LDNS_RR_TYPE_NULL, "TYPE136", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2251 {LDNS_RR_TYPE_NULL, "TYPE137", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2252 {LDNS_RR_TYPE_NULL, "TYPE138", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2253 {LDNS_RR_TYPE_NULL, "TYPE139", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2254 {LDNS_RR_TYPE_NULL, "TYPE140", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2255 {LDNS_RR_TYPE_NULL, "TYPE141", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2256 {LDNS_RR_TYPE_NULL, "TYPE142", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2257 {LDNS_RR_TYPE_NULL, "TYPE143", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2258 {LDNS_RR_TYPE_NULL, "TYPE144", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2259 {LDNS_RR_TYPE_NULL, "TYPE145", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2260 {LDNS_RR_TYPE_NULL, "TYPE146", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2261 {LDNS_RR_TYPE_NULL, "TYPE147", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2262 {LDNS_RR_TYPE_NULL, "TYPE148", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2263 {LDNS_RR_TYPE_NULL, "TYPE149", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2264 {LDNS_RR_TYPE_NULL, "TYPE150", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2265 {LDNS_RR_TYPE_NULL, "TYPE151", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2266 {LDNS_RR_TYPE_NULL, "TYPE152", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2267 {LDNS_RR_TYPE_NULL, "TYPE153", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2268 {LDNS_RR_TYPE_NULL, "TYPE154", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2269 {LDNS_RR_TYPE_NULL, "TYPE155", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2270 {LDNS_RR_TYPE_NULL, "TYPE156", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2271 {LDNS_RR_TYPE_NULL, "TYPE157", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2272 {LDNS_RR_TYPE_NULL, "TYPE158", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2273 {LDNS_RR_TYPE_NULL, "TYPE159", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2274 {LDNS_RR_TYPE_NULL, "TYPE160", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2275 {LDNS_RR_TYPE_NULL, "TYPE161", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2276 {LDNS_RR_TYPE_NULL, "TYPE162", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2277 {LDNS_RR_TYPE_NULL, "TYPE163", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2278 {LDNS_RR_TYPE_NULL, "TYPE164", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2279 {LDNS_RR_TYPE_NULL, "TYPE165", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2280 {LDNS_RR_TYPE_NULL, "TYPE166", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2281 {LDNS_RR_TYPE_NULL, "TYPE167", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2282 {LDNS_RR_TYPE_NULL, "TYPE168", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2283 {LDNS_RR_TYPE_NULL, "TYPE169", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2284 {LDNS_RR_TYPE_NULL, "TYPE170", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2285 {LDNS_RR_TYPE_NULL, "TYPE171", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2286 {LDNS_RR_TYPE_NULL, "TYPE172", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2287 {LDNS_RR_TYPE_NULL, "TYPE173", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2288 {LDNS_RR_TYPE_NULL, "TYPE174", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2289 {LDNS_RR_TYPE_NULL, "TYPE175", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2290 {LDNS_RR_TYPE_NULL, "TYPE176", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2291 {LDNS_RR_TYPE_NULL, "TYPE177", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2292 {LDNS_RR_TYPE_NULL, "TYPE178", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2293 {LDNS_RR_TYPE_NULL, "TYPE179", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2294 {LDNS_RR_TYPE_NULL, "TYPE180", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2295 {LDNS_RR_TYPE_NULL, "TYPE181", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2296 {LDNS_RR_TYPE_NULL, "TYPE182", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2297 {LDNS_RR_TYPE_NULL, "TYPE183", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2298 {LDNS_RR_TYPE_NULL, "TYPE184", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2299 {LDNS_RR_TYPE_NULL, "TYPE185", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2300 {LDNS_RR_TYPE_NULL, "TYPE186", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2301 {LDNS_RR_TYPE_NULL, "TYPE187", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2302 {LDNS_RR_TYPE_NULL, "TYPE188", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2303 {LDNS_RR_TYPE_NULL, "TYPE189", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2304 {LDNS_RR_TYPE_NULL, "TYPE190", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2305 {LDNS_RR_TYPE_NULL, "TYPE191", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2306 {LDNS_RR_TYPE_NULL, "TYPE192", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2307 {LDNS_RR_TYPE_NULL, "TYPE193", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2308 {LDNS_RR_TYPE_NULL, "TYPE194", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2309 {LDNS_RR_TYPE_NULL, "TYPE195", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2310 {LDNS_RR_TYPE_NULL, "TYPE196", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2311 {LDNS_RR_TYPE_NULL, "TYPE197", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2312 {LDNS_RR_TYPE_NULL, "TYPE198", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2313 {LDNS_RR_TYPE_NULL, "TYPE199", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2314 {LDNS_RR_TYPE_NULL, "TYPE200", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2315 {LDNS_RR_TYPE_NULL, "TYPE201", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2316 {LDNS_RR_TYPE_NULL, "TYPE202", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2317 {LDNS_RR_TYPE_NULL, "TYPE203", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2318 {LDNS_RR_TYPE_NULL, "TYPE204", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2319 {LDNS_RR_TYPE_NULL, "TYPE205", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2320 {LDNS_RR_TYPE_NULL, "TYPE206", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2321 {LDNS_RR_TYPE_NULL, "TYPE207", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2322 {LDNS_RR_TYPE_NULL, "TYPE208", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2323 {LDNS_RR_TYPE_NULL, "TYPE209", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2324 {LDNS_RR_TYPE_NULL, "TYPE210", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2325 {LDNS_RR_TYPE_NULL, "TYPE211", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2326 {LDNS_RR_TYPE_NULL, "TYPE212", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2327 {LDNS_RR_TYPE_NULL, "TYPE213", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2328 {LDNS_RR_TYPE_NULL, "TYPE214", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2329 {LDNS_RR_TYPE_NULL, "TYPE215", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2330 {LDNS_RR_TYPE_NULL, "TYPE216", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2331 {LDNS_RR_TYPE_NULL, "TYPE217", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2332 {LDNS_RR_TYPE_NULL, "TYPE218", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2333 {LDNS_RR_TYPE_NULL, "TYPE219", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2334 {LDNS_RR_TYPE_NULL, "TYPE220", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2335 {LDNS_RR_TYPE_NULL, "TYPE221", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2336 {LDNS_RR_TYPE_NULL, "TYPE222", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2337 {LDNS_RR_TYPE_NULL, "TYPE223", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2338 {LDNS_RR_TYPE_NULL, "TYPE224", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2339 {LDNS_RR_TYPE_NULL, "TYPE225", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2340 {LDNS_RR_TYPE_NULL, "TYPE226", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2341 {LDNS_RR_TYPE_NULL, "TYPE227", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2342 {LDNS_RR_TYPE_NULL, "TYPE228", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2343 {LDNS_RR_TYPE_NULL, "TYPE229", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2344 {LDNS_RR_TYPE_NULL, "TYPE230", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2345 {LDNS_RR_TYPE_NULL, "TYPE231", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2346 {LDNS_RR_TYPE_NULL, "TYPE232", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2347 {LDNS_RR_TYPE_NULL, "TYPE233", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2348 {LDNS_RR_TYPE_NULL, "TYPE234", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2349 {LDNS_RR_TYPE_NULL, "TYPE235", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2350 {LDNS_RR_TYPE_NULL, "TYPE236", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2351 {LDNS_RR_TYPE_NULL, "TYPE237", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2352 {LDNS_RR_TYPE_NULL, "TYPE238", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2353 {LDNS_RR_TYPE_NULL, "TYPE239", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2354 {LDNS_RR_TYPE_NULL, "TYPE240", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2355 {LDNS_RR_TYPE_NULL, "TYPE241", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2356 {LDNS_RR_TYPE_NULL, "TYPE242", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2357 {LDNS_RR_TYPE_NULL, "TYPE243", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2358 {LDNS_RR_TYPE_NULL, "TYPE244", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2359 {LDNS_RR_TYPE_NULL, "TYPE245", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2360 {LDNS_RR_TYPE_NULL, "TYPE246", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2361 {LDNS_RR_TYPE_NULL, "TYPE247", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2362 {LDNS_RR_TYPE_NULL, "TYPE248", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2363
2364         /* LDNS_RDF_TYPE_INT16_DATA takes two fields (length and data) as one.
2365          * So, unlike RFC 2930 spec, we have 7 min/max rdf's i.s.o. 8/9.
2366          */
2367         /* 249 */
2368         {LDNS_RR_TYPE_TKEY, "TKEY", 7, 7, type_tkey_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2369         /* LDNS_RDF_TYPE_INT16_DATA takes two fields (length and data) as one.
2370          * So, unlike RFC 2930 spec, we have 7 min/max rdf's i.s.o. 8/9.
2371          */
2372         /* 250 */
2373         {LDNS_RR_TYPE_TSIG, "TSIG", 7, 7, type_tsig_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 1 },
2374
2375         /* IXFR: A request for a transfer of an incremental zone transfer */
2376 {LDNS_RR_TYPE_NULL, "TYPE251", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2377         /* AXFR: A request for a transfer of an entire zone */
2378 {LDNS_RR_TYPE_NULL, "TYPE252", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2379         /* MAILB: A request for mailbox-related records (MB, MG or MR) */
2380 {LDNS_RR_TYPE_NULL, "TYPE253", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2381         /* MAILA: A request for mail agent RRs (Obsolete - see MX) */
2382 {LDNS_RR_TYPE_NULL, "TYPE254", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2383         /* ANY: A request for all (available) records */
2384 {LDNS_RR_TYPE_NULL, "TYPE255", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2385
2386 #ifdef RRTYPE_URI
2387         /* 256 */
2388         {LDNS_RR_TYPE_URI, "URI", 3, 3, type_uri_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2389 #else
2390 {LDNS_RR_TYPE_NULL, "TYPE256", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2391 #endif
2392         /* 257 */
2393         {LDNS_RR_TYPE_CAA, "CAA", 3, 3, type_caa_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2394
2395 /* split in array, no longer contiguous */
2396
2397 #ifdef RRTYPE_TA
2398         /* 32768 */
2399         {LDNS_RR_TYPE_TA, "TA", 4, 4, type_ds_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2400 #else
2401 {LDNS_RR_TYPE_NULL, "TYPE32768", 1, 1, type_0_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 },
2402 #endif
2403         /* 32769 */
2404         {LDNS_RR_TYPE_DLV, "DLV", 4, 4, type_ds_wireformat, LDNS_RDF_TYPE_NONE, LDNS_RR_NO_COMPRESS, 0 }
2405 };
2406 /** \endcond */
2407
2408 /**
2409  * \def LDNS_RDATA_FIELD_DESCRIPTORS_COUNT
2410  * computes the number of rdata fields
2411  */
2412 #define LDNS_RDATA_FIELD_DESCRIPTORS_COUNT \
2413         (sizeof(rdata_field_descriptors)/sizeof(rdata_field_descriptors[0]))
2414
2415
2416 /*---------------------------------------------------------------------------*
2417  * The functions below return an bitmap RDF with the space required to set
2418  * or unset all known RR types. Arguably these functions are better situated
2419  * in rdata.c, however for the space calculation it is necesarry to walk
2420  * through rdata_field_descriptors which is not easily possible from anywhere
2421  * other than rr.c where it is declared static.
2422  *
2423  * Alternatively rr.c could have provided an iterator for rr_type or
2424  * rdf_descriptors, but this seemed overkill for internal use only.
2425  */
2426 static ldns_rr_descriptor* rdata_field_descriptors_end =
2427         &rdata_field_descriptors[LDNS_RDATA_FIELD_DESCRIPTORS_COUNT];
2428
2429 /* From RFC3845:
2430  *
2431  * 2.1.2.  The List of Type Bit Map(s) Field
2432  *
2433  *    The RR type space is split into 256 window blocks, each representing
2434  *    the low-order 8 bits of the 16-bit RR type space.  Each block that
2435  *    has at least one active RR type is encoded using a single octet
2436  *    window number (from 0 to 255), a single octet bitmap length (from 1
2437  *    to 32) indicating the number of octets used for the window block's
2438  *    bitmap, and up to 32 octets (256 bits) of bitmap.
2439  *
2440  *    Window blocks are present in the NSEC RR RDATA in increasing
2441  *    numerical order.
2442  *
2443  *    "|" denotes concatenation
2444  *
2445  *    Type Bit Map(s) Field = ( Window Block # | Bitmap Length | Bitmap ) +
2446  *
2447  *    <cut>
2448  *
2449  *    Blocks with no types present MUST NOT be included.  Trailing zero
2450  *    octets in the bitmap MUST be omitted.  The length of each block's
2451  *    bitmap is determined by the type code with the largest numerical
2452  *    value within that block, among the set of RR types present at the
2453  *    NSEC RR's owner name.  Trailing zero octets not specified MUST be
2454  *    interpreted as zero octets.
2455  */
2456 static ldns_status
2457 ldns_rdf_bitmap_known_rr_types_set(ldns_rdf** rdf, int value)
2458 {
2459         uint8_t  window;                /*  most significant octet of type */
2460         uint8_t  subtype;               /* least significant octet of type */
2461         uint16_t windows[256]           /* Max subtype per window */
2462 #ifndef S_SPLINT_S
2463                               = { 0 }
2464 #endif
2465                                      ;
2466         ldns_rr_descriptor* d;  /* used to traverse rdata_field_descriptors */
2467         size_t i;               /* used to traverse windows array */
2468
2469         size_t sz;                      /* size needed for type bitmap rdf */
2470         uint8_t* data = NULL;           /* rdf data */
2471         uint8_t* dptr;                  /* used to itraverse rdf data */
2472
2473         assert(rdf != NULL);
2474
2475         /* Which windows need to be in the bitmap rdf?
2476          */
2477         for (d=rdata_field_descriptors; d < rdata_field_descriptors_end; d++) {
2478                 window  = d->_type >> 8;
2479                 subtype = d->_type & 0xff;
2480                 if (windows[window] < subtype) {
2481                         windows[window] = subtype;
2482                 }
2483         }
2484
2485         /* How much space do we need in the rdf for those windows?
2486          */
2487         sz = 0;
2488         for (i = 0; i < 256; i++) {
2489                 if (windows[i]) {
2490                         sz += windows[i] / 8 + 3;
2491                 }
2492         }
2493         if (sz > 0) {
2494                 /* Format rdf data according RFC3845 Section 2.1.2 (see above)
2495                  */
2496                 dptr = data = LDNS_XMALLOC(uint8_t, sz);
2497                 memset(data, value, sz);
2498                 if (!data) {
2499                         return LDNS_STATUS_MEM_ERR;
2500                 }
2501                 for (i = 0; i < 256; i++) {
2502                         if (windows[i]) {
2503                                 *dptr++ = (uint8_t)i;
2504                                 *dptr++ = (uint8_t)(windows[i] / 8 + 1);
2505                                 dptr += dptr[-1];
2506                         }
2507                 }
2508         }
2509         /* Allocate and return rdf structure for the data
2510          */
2511         *rdf = ldns_rdf_new(LDNS_RDF_TYPE_BITMAP, sz, data);
2512         if (!*rdf) {
2513                 LDNS_FREE(data);
2514                 return LDNS_STATUS_MEM_ERR;
2515         }
2516         return LDNS_STATUS_OK;
2517 }
2518
2519 ldns_status
2520 ldns_rdf_bitmap_known_rr_types_space(ldns_rdf** rdf)
2521 {
2522         return ldns_rdf_bitmap_known_rr_types_set(rdf, 0);
2523 }
2524
2525 ldns_status
2526 ldns_rdf_bitmap_known_rr_types(ldns_rdf** rdf)
2527 {
2528         return ldns_rdf_bitmap_known_rr_types_set(rdf, 255);
2529 }
2530 /* End of RDF bitmap functions
2531  *---------------------------------------------------------------------------*/
2532
2533
2534 const ldns_rr_descriptor *
2535 ldns_rr_descript(uint16_t type)
2536 {
2537         size_t i;
2538         if (type < LDNS_RDATA_FIELD_DESCRIPTORS_COMMON) {
2539                 return &rdata_field_descriptors[type];
2540         } else {
2541                 /* because not all array index equals type code */
2542                 for (i = LDNS_RDATA_FIELD_DESCRIPTORS_COMMON;
2543                      i < LDNS_RDATA_FIELD_DESCRIPTORS_COUNT;
2544                      i++) {
2545                         if (rdata_field_descriptors[i]._type == type) {
2546                                 return &rdata_field_descriptors[i];
2547                         }
2548                 }
2549                 return &rdata_field_descriptors[0];
2550         }
2551 }
2552
2553 size_t
2554 ldns_rr_descriptor_minimum(const ldns_rr_descriptor *descriptor)
2555 {
2556         if (descriptor) {
2557                 return descriptor->_minimum;
2558         } else {
2559                 return 0;
2560         }
2561 }
2562
2563 size_t
2564 ldns_rr_descriptor_maximum(const ldns_rr_descriptor *descriptor)
2565 {
2566         if (descriptor) {
2567                 if (descriptor->_variable != LDNS_RDF_TYPE_NONE) {
2568                         /* Should really be SIZE_MAX... bad FreeBSD.  */
2569                         return UINT_MAX;
2570                 } else {
2571                         return descriptor->_maximum;
2572                 }
2573         } else {
2574                 return 0;
2575         }
2576 }
2577
2578 ldns_rdf_type
2579 ldns_rr_descriptor_field_type(const ldns_rr_descriptor *descriptor,
2580                               size_t index)
2581 {
2582         assert(descriptor != NULL);
2583         assert(index < descriptor->_maximum
2584                || descriptor->_variable != LDNS_RDF_TYPE_NONE);
2585         if (index < descriptor->_maximum) {
2586                 return descriptor->_wireformat[index];
2587         } else {
2588                 return descriptor->_variable;
2589         }
2590 }
2591
2592 ldns_rr_type
2593 ldns_get_rr_type_by_name(const char *name)
2594 {
2595         unsigned int i;
2596         const char *desc_name;
2597         const ldns_rr_descriptor *desc;
2598
2599         /* TYPEXX representation */
2600         if (strlen(name) > 4 && strncasecmp(name, "TYPE", 4) == 0) {
2601                 return atoi(name + 4);
2602         }
2603
2604         /* Normal types */
2605         for (i = 0; i < (unsigned int) LDNS_RDATA_FIELD_DESCRIPTORS_COUNT; i++) {
2606                 desc = &rdata_field_descriptors[i];
2607                 desc_name = desc->_name;
2608                 if(desc_name &&
2609                    strlen(name) == strlen(desc_name) &&
2610                    strncasecmp(name, desc_name, strlen(desc_name)) == 0) {
2611                         /* because not all array index equals type code */
2612                         return desc->_type;
2613                 }
2614         }
2615
2616         /* special cases for query types */
2617         if (strlen(name) == 4 && strncasecmp(name, "IXFR", 4) == 0) {
2618                 return 251;
2619         } else if (strlen(name) == 4 && strncasecmp(name, "AXFR", 4) == 0) {
2620                 return 252;
2621         } else if (strlen(name) == 5 && strncasecmp(name, "MAILB", 5) == 0) {
2622                 return 253;
2623         } else if (strlen(name) == 5 && strncasecmp(name, "MAILA", 5) == 0) {
2624                 return 254;
2625         } else if (strlen(name) == 3 && strncasecmp(name, "ANY", 3) == 0) {
2626                 return 255;
2627         }
2628
2629         return 0;
2630 }
2631
2632 ldns_rr_class
2633 ldns_get_rr_class_by_name(const char *name)
2634 {
2635         ldns_lookup_table *lt;
2636
2637         /* CLASSXX representation */
2638         if (strlen(name) > 5 && strncasecmp(name, "CLASS", 5) == 0) {
2639                 return atoi(name + 5);
2640         }
2641
2642         /* Normal types */
2643         lt = ldns_lookup_by_name(ldns_rr_classes, name);
2644
2645         if (lt) {
2646                 return lt->id;
2647         }
2648         return 0;
2649 }
2650
2651
2652 ldns_rr_type
2653 ldns_rdf2rr_type(const ldns_rdf *rd)
2654 {
2655         ldns_rr_type r;
2656
2657         if (!rd) {
2658                 return 0;
2659         }
2660
2661         if (ldns_rdf_get_type(rd) != LDNS_RDF_TYPE_TYPE) {
2662                 return 0;
2663         }
2664
2665         r = (ldns_rr_type) ldns_rdf2native_int16(rd);
2666         return r;
2667 }
2668
2669 ldns_rr_type
2670 ldns_rr_list_type(const ldns_rr_list *rr_list)
2671 {
2672         if (rr_list && ldns_rr_list_rr_count(rr_list) > 0) {
2673                 return ldns_rr_get_type(ldns_rr_list_rr(rr_list, 0));
2674         } else {
2675                 return 0;
2676         }
2677 }
2678
2679 ldns_rdf *
2680 ldns_rr_list_owner(const ldns_rr_list *rr_list)
2681 {
2682         if (rr_list && ldns_rr_list_rr_count(rr_list) > 0) {
2683                 return ldns_rr_owner(ldns_rr_list_rr(rr_list, 0));
2684         } else {
2685                 return NULL;
2686         }
2687 }