contrib/ldns/dnssec_sign.c

   1 #include <ldns/config.h>
   2
   3 #include <ldns/ldns.h>
   4
   5 #include <ldns/dnssec.h>
   6 #include <ldns/dnssec_sign.h>
   7
   8 #include <strings.h>
   9 #include <time.h>
  10
  11 #ifdef HAVE_SSL
  12 /* this entire file is rather useless when you don't have
  13  * crypto...
  14  */
  15 #include <openssl/ssl.h>
  16 #include <openssl/evp.h>
  17 #include <openssl/rand.h>
  18 #include <openssl/err.h>
  19 #include <openssl/md5.h>
  20 #endif /* HAVE_SSL */
  21
  22 ldns_rr *
  23 ldns_create_empty_rrsig(ldns_rr_list *rrset,
  24                         ldns_key *current_key)
  25 {
  26         uint32_t orig_ttl;
  27         ldns_rr_class orig_class;
  28         time_t now;
  29         ldns_rr *current_sig;
  30         uint8_t label_count;
  31
  32         label_count = ldns_dname_label_count(ldns_rr_owner(ldns_rr_list_rr(rrset,
  33                                                            0)));
  34         /* RFC4035 2.2: not counting the leftmost label if it is a wildcard */
  35         if(ldns_dname_is_wildcard(ldns_rr_owner(ldns_rr_list_rr(rrset, 0))))
  36                 label_count --;
  37
  38         current_sig = ldns_rr_new_frm_type(LDNS_RR_TYPE_RRSIG);
  39
  40         /* set the type on the new signature */
  41         orig_ttl = ldns_rr_ttl(ldns_rr_list_rr(rrset, 0));
  42         orig_class = ldns_rr_get_class(ldns_rr_list_rr(rrset, 0));
  43
  44         ldns_rr_set_ttl(current_sig, orig_ttl);
  45         ldns_rr_set_class(current_sig, orig_class);
  46         ldns_rr_set_owner(current_sig,
  47                           ldns_rdf_clone(
  48                                ldns_rr_owner(
  49                                     ldns_rr_list_rr(rrset,
  50                                                     0))));
  51
  52         /* fill in what we know of the signature */
  53
  54         /* set the orig_ttl */
  55         (void)ldns_rr_rrsig_set_origttl(
  56                    current_sig,
  57                    ldns_native2rdf_int32(LDNS_RDF_TYPE_INT32,
  58                                          orig_ttl));
  59         /* the signers name */
  60         (void)ldns_rr_rrsig_set_signame(
  61                         current_sig,
  62                         ldns_rdf_clone(ldns_key_pubkey_owner(current_key)));
  63         /* label count - get it from the first rr in the rr_list */
  64         (void)ldns_rr_rrsig_set_labels(
  65                         current_sig,
  66                         ldns_native2rdf_int8(LDNS_RDF_TYPE_INT8,
  67                                              label_count));
  68         /* inception, expiration */
  69         now = time(NULL);
  70         if (ldns_key_inception(current_key) != 0) {
  71                 (void)ldns_rr_rrsig_set_inception(
  72                                 current_sig,
  73                                 ldns_native2rdf_int32(
  74                                     LDNS_RDF_TYPE_TIME,
  75                                     ldns_key_inception(current_key)));
  76         } else {
  77                 (void)ldns_rr_rrsig_set_inception(
  78                                 current_sig,
  79                                 ldns_native2rdf_int32(LDNS_RDF_TYPE_TIME, now));
  80         }
  81         if (ldns_key_expiration(current_key) != 0) {
  82                 (void)ldns_rr_rrsig_set_expiration(
  83                                 current_sig,
  84                                 ldns_native2rdf_int32(
  85                                     LDNS_RDF_TYPE_TIME,
  86                                     ldns_key_expiration(current_key)));
  87         } else {
  88                 (void)ldns_rr_rrsig_set_expiration(
  89                              current_sig,
  90                                 ldns_native2rdf_int32(
  91                                     LDNS_RDF_TYPE_TIME,
  92                                     now + LDNS_DEFAULT_EXP_TIME));
  93         }
  94
  95         (void)ldns_rr_rrsig_set_keytag(
  96                    current_sig,
  97                    ldns_native2rdf_int16(LDNS_RDF_TYPE_INT16,
  98                                          ldns_key_keytag(current_key)));
  99
 100         (void)ldns_rr_rrsig_set_algorithm(
 101                         current_sig,
 102                         ldns_native2rdf_int8(
 103                             LDNS_RDF_TYPE_ALG,
 104                             ldns_key_algorithm(current_key)));
 105
 106         (void)ldns_rr_rrsig_set_typecovered(
 107                         current_sig,
 108                         ldns_native2rdf_int16(
 109                             LDNS_RDF_TYPE_TYPE,
 110                             ldns_rr_get_type(ldns_rr_list_rr(rrset,
 111                                                              0))));
 112         return current_sig;
 113 }
 114
 115 #ifdef HAVE_SSL
 116 ldns_rdf *
 117 ldns_sign_public_buffer(ldns_buffer *sign_buf, ldns_key *current_key)
 118 {
 119         ldns_rdf *b64rdf = NULL;
 120
 121         switch(ldns_key_algorithm(current_key)) {
 122         case LDNS_SIGN_DSA:
 123         case LDNS_SIGN_DSA_NSEC3:
 124                 b64rdf = ldns_sign_public_evp(
 125                                    sign_buf,
 126                                    ldns_key_evp_key(current_key),
 127                                    EVP_dss1());
 128                 break;
 129         case LDNS_SIGN_RSASHA1:
 130         case LDNS_SIGN_RSASHA1_NSEC3:
 131                 b64rdf = ldns_sign_public_evp(
 132                                    sign_buf,
 133                                    ldns_key_evp_key(current_key),
 134                                    EVP_sha1());
 135                 break;
 136 #ifdef USE_SHA2
 137         case LDNS_SIGN_RSASHA256:
 138                 b64rdf = ldns_sign_public_evp(
 139                                    sign_buf,
 140                                    ldns_key_evp_key(current_key),
 141                                    EVP_sha256());
 142                 break;
 143         case LDNS_SIGN_RSASHA512:
 144                 b64rdf = ldns_sign_public_evp(
 145                                    sign_buf,
 146                                    ldns_key_evp_key(current_key),
 147                                    EVP_sha512());
 148                 break;
 149 #endif /* USE_SHA2 */
 150 #ifdef USE_GOST
 151         case LDNS_SIGN_ECC_GOST:
 152                 b64rdf = ldns_sign_public_evp(
 153                                    sign_buf,
 154                                    ldns_key_evp_key(current_key),
 155                                    EVP_get_digestbyname("md_gost94"));
 156                 break;
 157 #endif /* USE_GOST */
 158 #ifdef USE_ECDSA
 159         case LDNS_SIGN_ECDSAP256SHA256:
 160                 b64rdf = ldns_sign_public_evp(
 161                                    sign_buf,
 162                                    ldns_key_evp_key(current_key),
 163                                    EVP_sha256());
 164                 break;
 165         case LDNS_SIGN_ECDSAP384SHA384:
 166                 b64rdf = ldns_sign_public_evp(
 167                                    sign_buf,
 168                                    ldns_key_evp_key(current_key),
 169                                    EVP_sha384());
 170                 break;
 171 #endif
 172         case LDNS_SIGN_RSAMD5:
 173                 b64rdf = ldns_sign_public_evp(
 174                                    sign_buf,
 175                                    ldns_key_evp_key(current_key),
 176                                    EVP_md5());
 177                 break;
 178         default:
 179                 /* do _you_ know this alg? */
 180                 printf("unknown algorithm, ");
 181                 printf("is the one used available on this system?\n");
 182                 break;
 183         }
 184
 185         return b64rdf;
 186 }
 187
 188 /**
 189  * use this function to sign with a public/private key alg
 190  * return the created signatures
 191  */
 192 ldns_rr_list *
 193 ldns_sign_public(ldns_rr_list *rrset, ldns_key_list *keys)
 194 {
 195         ldns_rr_list *signatures;
 196         ldns_rr_list *rrset_clone;
 197         ldns_rr *current_sig;
 198         ldns_rdf *b64rdf;
 199         ldns_key *current_key;
 200         size_t key_count;
 201         uint16_t i;
 202         ldns_buffer *sign_buf;
 203         ldns_rdf *new_owner;
 204
 205         if (!rrset || ldns_rr_list_rr_count(rrset) < 1 || !keys) {
 206                 return NULL;
 207         }
 208
 209         new_owner = NULL;
 210
 211         signatures = ldns_rr_list_new();
 212
 213         /* prepare a signature and add all the know data
 214          * prepare the rrset. Sign this together.  */
 215         rrset_clone = ldns_rr_list_clone(rrset);
 216         if (!rrset_clone) {
 217                 return NULL;
 218         }
 219
 220         /* make it canonical */
 221         for(i = 0; i < ldns_rr_list_rr_count(rrset_clone); i++) {
 222                 ldns_rr_set_ttl(ldns_rr_list_rr(rrset_clone, i),
 223                         ldns_rr_ttl(ldns_rr_list_rr(rrset, 0)));
 224                 ldns_rr2canonical(ldns_rr_list_rr(rrset_clone, i));
 225         }
 226         /* sort */
 227         ldns_rr_list_sort(rrset_clone);
 228
 229         for (key_count = 0;
 230                 key_count < ldns_key_list_key_count(keys);
 231                 key_count++) {
 232                 if (!ldns_key_use(ldns_key_list_key(keys, key_count))) {
 233                         continue;
 234                 }
 235                 sign_buf = ldns_buffer_new(LDNS_MAX_PACKETLEN);
 236                 if (!sign_buf) {
 237                         ldns_rr_list_free(rrset_clone);
 238                         ldns_rr_list_free(signatures);
 239                         ldns_rdf_free(new_owner);
 240                         return NULL;
 241                 }
 242                 b64rdf = NULL;
 243
 244                 current_key = ldns_key_list_key(keys, key_count);
 245                 /* sign all RRs with keys that have ZSKbit, !SEPbit.
 246                    sign DNSKEY RRs with keys that have ZSKbit&SEPbit */
 247                 if (ldns_key_flags(current_key) & LDNS_KEY_ZONE_KEY) {
 248                         current_sig = ldns_create_empty_rrsig(rrset_clone,
 249                                                               current_key);
 250
 251                         /* right now, we have: a key, a semi-sig and an rrset. For
 252                          * which we can create the sig and base64 encode that and
 253                          * add that to the signature */
 254
 255                         if (ldns_rrsig2buffer_wire(sign_buf, current_sig)
 256                             != LDNS_STATUS_OK) {
 257                                 ldns_buffer_free(sign_buf);
 258                                 /* ERROR */
 259                                 ldns_rr_list_deep_free(rrset_clone);
 260                                 return NULL;
 261                         }
 262
 263                         /* add the rrset in sign_buf */
 264                         if (ldns_rr_list2buffer_wire(sign_buf, rrset_clone)
 265                             != LDNS_STATUS_OK) {
 266                                 ldns_buffer_free(sign_buf);
 267                                 ldns_rr_list_deep_free(rrset_clone);
 268                                 return NULL;
 269                         }
 270
 271                         b64rdf = ldns_sign_public_buffer(sign_buf, current_key);
 272
 273                         if (!b64rdf) {
 274                                 /* signing went wrong */
 275                                 ldns_rr_list_deep_free(rrset_clone);
 276                                 return NULL;
 277                         }
 278
 279                         ldns_rr_rrsig_set_sig(current_sig, b64rdf);
 280
 281                         /* push the signature to the signatures list */
 282                         ldns_rr_list_push_rr(signatures, current_sig);
 283                 }
 284                 ldns_buffer_free(sign_buf); /* restart for the next key */
 285         }
 286         ldns_rr_list_deep_free(rrset_clone);
 287
 288         return signatures;
 289 }
 290
 291 /**
 292  * Sign data with DSA
 293  *
 294  * \param[in] to_sign The ldns_buffer containing raw data that is
 295  *                    to be signed
 296  * \param[in] key The DSA key structure to sign with
 297  * \return ldns_rdf for the RRSIG ldns_rr
 298  */
 299 ldns_rdf *
 300 ldns_sign_public_dsa(ldns_buffer *to_sign, DSA *key)
 301 {
 302         unsigned char *sha1_hash;
 303         ldns_rdf *sigdata_rdf;
 304         ldns_buffer *b64sig;
 305
 306         DSA_SIG *sig;
 307         uint8_t *data;
 308         size_t pad;
 309
 310         b64sig = ldns_buffer_new(LDNS_MAX_PACKETLEN);
 311         if (!b64sig) {
 312                 return NULL;
 313         }
 314
 315         sha1_hash = SHA1((unsigned char*)ldns_buffer_begin(to_sign),
 316                                   ldns_buffer_position(to_sign), NULL);
 317         if (!sha1_hash) {
 318                 ldns_buffer_free(b64sig);
 319                 return NULL;
 320         }
 321
 322         sig = DSA_do_sign(sha1_hash, SHA_DIGEST_LENGTH, key);
 323         if(!sig) {
 324                 ldns_buffer_free(b64sig);
 325                 return NULL;
 326         }
 327
 328         data = LDNS_XMALLOC(uint8_t, 1 + 2 * SHA_DIGEST_LENGTH);
 329         if(!data) {
 330                 ldns_buffer_free(b64sig);
 331                 DSA_SIG_free(sig);
 332                 return NULL;
 333         }
 334
 335         data[0] = 1;
 336         pad = 20 - (size_t) BN_num_bytes(sig->r);
 337         if (pad > 0) {
 338                 memset(data + 1, 0, pad);
 339         }
 340         BN_bn2bin(sig->r, (unsigned char *) (data + 1) + pad);
 341
 342         pad = 20 - (size_t) BN_num_bytes(sig->s);
 343         if (pad > 0) {
 344                 memset(data + 1 + SHA_DIGEST_LENGTH, 0, pad);
 345         }
 346         BN_bn2bin(sig->s, (unsigned char *) (data + 1 + SHA_DIGEST_LENGTH + pad));
 347
 348         sigdata_rdf = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_B64,
 349                                                                  1 + 2 * SHA_DIGEST_LENGTH,
 350                                                                  data);
 351
 352         ldns_buffer_free(b64sig);
 353         LDNS_FREE(data);
 354         DSA_SIG_free(sig);
 355
 356         return sigdata_rdf;
 357 }
 358
 359 #ifdef USE_ECDSA
 360 #ifndef S_SPLINT_S
 361 static int
 362 ldns_pkey_is_ecdsa(EVP_PKEY* pkey)
 363 {
 364         EC_KEY* ec;
 365         const EC_GROUP* g;
 366         if(EVP_PKEY_type(pkey->type) != EVP_PKEY_EC)
 367                 return 0;
 368         ec = EVP_PKEY_get1_EC_KEY(pkey);
 369         g = EC_KEY_get0_group(ec);
 370         if(!g) {
 371                 EC_KEY_free(ec);
 372                 return 0;
 373         }
 374         if(EC_GROUP_get_curve_name(g) == NID_secp224r1 ||
 375                 EC_GROUP_get_curve_name(g) == NID_X9_62_prime256v1 ||
 376                 EC_GROUP_get_curve_name(g) == NID_secp384r1) {
 377                 EC_KEY_free(ec);
 378                 return 1;
 379         }
 380         /* downref the eckey, the original is still inside the pkey */
 381         EC_KEY_free(ec);
 382         return 0;
 383 }
 384 #endif /* splint */
 385 #endif /* USE_ECDSA */
 386
 387 ldns_rdf *
 388 ldns_sign_public_evp(ldns_buffer *to_sign,
 389                                  EVP_PKEY *key,
 390                                  const EVP_MD *digest_type)
 391 {
 392         unsigned int siglen;
 393         ldns_rdf *sigdata_rdf;
 394         ldns_buffer *b64sig;
 395         EVP_MD_CTX ctx;
 396         const EVP_MD *md_type;
 397         int r;
 398
 399         siglen = 0;
 400         b64sig = ldns_buffer_new(LDNS_MAX_PACKETLEN);
 401         if (!b64sig) {
 402                 return NULL;
 403         }
 404
 405         /* initializes a signing context */
 406         md_type = digest_type;
 407         if(!md_type) {
 408                 /* unknown message difest */
 409                 ldns_buffer_free(b64sig);
 410                 return NULL;
 411         }
 412
 413         EVP_MD_CTX_init(&ctx);
 414         r = EVP_SignInit(&ctx, md_type);
 415         if(r == 1) {
 416                 r = EVP_SignUpdate(&ctx, (unsigned char*)
 417                                             ldns_buffer_begin(to_sign),
 418                                             ldns_buffer_position(to_sign));
 419         } else {
 420                 ldns_buffer_free(b64sig);
 421                 return NULL;
 422         }
 423         if(r == 1) {
 424                 r = EVP_SignFinal(&ctx, (unsigned char*)
 425                                            ldns_buffer_begin(b64sig), &siglen, key);
 426         } else {
 427                 ldns_buffer_free(b64sig);
 428                 return NULL;
 429         }
 430         if(r != 1) {
 431                 ldns_buffer_free(b64sig);
 432                 return NULL;
 433         }
 434
 435         /* unfortunately, OpenSSL output is differenct from DNS DSA format */
 436 #ifndef S_SPLINT_S
 437         if (EVP_PKEY_type(key->type) == EVP_PKEY_DSA) {
 438                 sigdata_rdf = ldns_convert_dsa_rrsig_asn12rdf(b64sig, siglen);
 439 #ifdef USE_ECDSA
 440         } else if(EVP_PKEY_type(key->type) == EVP_PKEY_EC &&
 441                 ldns_pkey_is_ecdsa(key)) {
 442                 sigdata_rdf = ldns_convert_ecdsa_rrsig_asn12rdf(b64sig, siglen);
 443 #endif
 444         } else {
 445                 /* ok output for other types is the same */
 446                 sigdata_rdf = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_B64, siglen,
 447                                                                          ldns_buffer_begin(b64sig));
 448         }
 449 #endif /* splint */
 450         ldns_buffer_free(b64sig);
 451         EVP_MD_CTX_cleanup(&ctx);
 452         return sigdata_rdf;
 453 }
 454
 455 ldns_rdf *
 456 ldns_sign_public_rsasha1(ldns_buffer *to_sign, RSA *key)
 457 {
 458         unsigned char *sha1_hash;
 459         unsigned int siglen;
 460         ldns_rdf *sigdata_rdf;
 461         ldns_buffer *b64sig;
 462         int result;
 463
 464         siglen = 0;
 465         b64sig = ldns_buffer_new(LDNS_MAX_PACKETLEN);
 466         if (!b64sig) {
 467                 return NULL;
 468         }
 469
 470         sha1_hash = SHA1((unsigned char*)ldns_buffer_begin(to_sign),
 471                                   ldns_buffer_position(to_sign), NULL);
 472         if (!sha1_hash) {
 473                 ldns_buffer_free(b64sig);
 474                 return NULL;
 475         }
 476
 477         result = RSA_sign(NID_sha1, sha1_hash, SHA_DIGEST_LENGTH,
 478                                    (unsigned char*)ldns_buffer_begin(b64sig),
 479                                    &siglen, key);
 480         if (result != 1) {
 481                 return NULL;
 482         }
 483
 484         if (result != 1) {
 485                 return NULL;
 486         }
 487
 488         sigdata_rdf = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_B64, siglen,
 489                                                                  ldns_buffer_begin(b64sig));
 490         ldns_buffer_free(b64sig); /* can't free this buffer ?? */
 491         return sigdata_rdf;
 492 }
 493
 494 ldns_rdf *
 495 ldns_sign_public_rsamd5(ldns_buffer *to_sign, RSA *key)
 496 {
 497         unsigned char *md5_hash;
 498         unsigned int siglen;
 499         ldns_rdf *sigdata_rdf;
 500         ldns_buffer *b64sig;
 501
 502         b64sig = ldns_buffer_new(LDNS_MAX_PACKETLEN);
 503         if (!b64sig) {
 504                 return NULL;
 505         }
 506
 507         md5_hash = MD5((unsigned char*)ldns_buffer_begin(to_sign),
 508                                 ldns_buffer_position(to_sign), NULL);
 509         if (!md5_hash) {
 510                 ldns_buffer_free(b64sig);
 511                 return NULL;
 512         }
 513
 514         RSA_sign(NID_md5, md5_hash, MD5_DIGEST_LENGTH,
 515                     (unsigned char*)ldns_buffer_begin(b64sig),
 516                     &siglen, key);
 517
 518         sigdata_rdf = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_B64, siglen,
 519                                                                  ldns_buffer_begin(b64sig));
 520         ldns_buffer_free(b64sig);
 521         return sigdata_rdf;
 522 }
 523 #endif /* HAVE_SSL */
 524
 525 static int
 526 ldns_dnssec_name_has_only_a(ldns_dnssec_name *cur_name)
 527 {
 528         ldns_dnssec_rrsets *cur_rrset;
 529         cur_rrset = cur_name->rrsets;
 530         while (cur_rrset) {
 531                 if (cur_rrset->type != LDNS_RR_TYPE_A &&
 532                         cur_rrset->type != LDNS_RR_TYPE_AAAA) {
 533                         return 0;
 534                 } else {
 535                         cur_rrset = cur_rrset->next;
 536                 }
 537         }
 538         return 1;
 539 }
 540
 541 ldns_status
 542 ldns_dnssec_zone_mark_glue(ldns_dnssec_zone *zone)
 543 {
 544         ldns_rbnode_t *cur_node;
 545         ldns_dnssec_name *cur_name;
 546         ldns_rdf *cur_owner, *cur_parent;
 547
 548         cur_node = ldns_rbtree_first(zone->names);
 549         while (cur_node != LDNS_RBTREE_NULL) {
 550                 cur_name = (ldns_dnssec_name *) cur_node->data;
 551                 cur_node = ldns_rbtree_next(cur_node);
 552                 if (ldns_dnssec_name_has_only_a(cur_name)) {
 553                         /* assume glue XXX check for zone cur */
 554                         cur_owner = ldns_rdf_clone(ldns_rr_owner(
 555                                               cur_name->rrsets->rrs->rr));
 556                         while (ldns_dname_label_count(cur_owner) >
 557                                   ldns_dname_label_count(zone->soa->name)) {
 558                                 if (ldns_dnssec_zone_find_rrset(zone,
 559                                                                                   cur_owner,
 560                                                                                   LDNS_RR_TYPE_NS)) {
 561                                         /*
 562                                         fprintf(stderr, "[XX] Marking as glue: ");
 563                                         ldns_rdf_print(stderr, cur_name->name);
 564                                         fprintf(stderr, "\n");
 565                                         */
 566                                         cur_name->is_glue = true;
 567                                 }
 568                                 cur_parent = ldns_dname_left_chop(cur_owner);
 569                                 ldns_rdf_deep_free(cur_owner);
 570                                 cur_owner = cur_parent;
 571                         }
 572                         ldns_rdf_deep_free(cur_owner);
 573                 }
 574         }
 575         return LDNS_STATUS_OK;
 576 }
 577
 578 ldns_rbnode_t *
 579 ldns_dnssec_name_node_next_nonglue(ldns_rbnode_t *node)
 580 {
 581         ldns_rbnode_t *next_node = NULL;
 582         ldns_dnssec_name *next_name = NULL;
 583         bool done = false;
 584
 585         if (node == LDNS_RBTREE_NULL) {
 586                 return NULL;
 587         }
 588         next_node = node;
 589         while (!done) {
 590                 if (next_node == LDNS_RBTREE_NULL) {
 591                         return NULL;
 592                 } else {
 593                         next_name = (ldns_dnssec_name *)next_node->data;
 594                         if (!next_name->is_glue) {
 595                                 done = true;
 596                         } else {
 597                                 next_node = ldns_rbtree_next(next_node);
 598                         }
 599                 }
 600         }
 601         return next_node;
 602 }
 603
 604 ldns_status
 605 ldns_dnssec_zone_create_nsecs(ldns_dnssec_zone *zone,
 606                               ldns_rr_list *new_rrs)
 607 {
 608
 609         ldns_rbnode_t *first_node, *cur_node, *next_node;
 610         ldns_dnssec_name *cur_name, *next_name;
 611         ldns_rr *nsec_rr;
 612         uint32_t nsec_ttl;
 613         ldns_dnssec_rrsets *soa;
 614
 615         /* the TTL of NSEC rrs should be set to the minimum TTL of
 616          * the zone SOA (RFC4035 Section 2.3)
 617          */
 618         soa = ldns_dnssec_name_find_rrset(zone->soa, LDNS_RR_TYPE_SOA);
 619
 620         /* did the caller actually set it? if not,
 621          * fall back to default ttl
 622          */
 623         if (soa && soa->rrs && soa->rrs->rr) {
 624                 nsec_ttl = ldns_rdf2native_int32(ldns_rr_rdf(
 625                                                      soa->rrs->rr, 6));
 626         } else {
 627                 nsec_ttl = LDNS_DEFAULT_TTL;
 628         }
 629
 630         first_node = ldns_dnssec_name_node_next_nonglue(
 631                                ldns_rbtree_first(zone->names));
 632         cur_node = first_node;
 633         if (cur_node) {
 634                 next_node = ldns_dnssec_name_node_next_nonglue(
 635                                    ldns_rbtree_next(cur_node));
 636         } else {
 637                 next_node = NULL;
 638         }
 639
 640         while (cur_node && next_node) {
 641                 cur_name = (ldns_dnssec_name *)cur_node->data;
 642                 next_name = (ldns_dnssec_name *)next_node->data;
 643                 nsec_rr = ldns_dnssec_create_nsec(cur_name,
 644                                                   next_name,
 645                                                   LDNS_RR_TYPE_NSEC);
 646                 ldns_rr_set_ttl(nsec_rr, nsec_ttl);
 647                 if(ldns_dnssec_name_add_rr(cur_name, nsec_rr)!=LDNS_STATUS_OK){
 648                         ldns_rr_free(nsec_rr);
 649                         return LDNS_STATUS_ERR;
 650                 }
 651                 ldns_rr_list_push_rr(new_rrs, nsec_rr);
 652                 cur_node = next_node;
 653                 if (cur_node) {
 654                         next_node = ldns_dnssec_name_node_next_nonglue(
 655                                ldns_rbtree_next(cur_node));
 656                 }
 657         }
 658
 659         if (cur_node && !next_node) {
 660                 cur_name = (ldns_dnssec_name *)cur_node->data;
 661                 next_name = (ldns_dnssec_name *)first_node->data;
 662                 nsec_rr = ldns_dnssec_create_nsec(cur_name,
 663                                                   next_name,
 664                                                   LDNS_RR_TYPE_NSEC);
 665                 ldns_rr_set_ttl(nsec_rr, nsec_ttl);
 666                 if(ldns_dnssec_name_add_rr(cur_name, nsec_rr)!=LDNS_STATUS_OK){
 667                         ldns_rr_free(nsec_rr);
 668                         return LDNS_STATUS_ERR;
 669                 }
 670                 ldns_rr_list_push_rr(new_rrs, nsec_rr);
 671         } else {
 672                 printf("error\n");
 673         }
 674
 675         return LDNS_STATUS_OK;
 676 }
 677
 678 #ifdef HAVE_SSL
 679 ldns_status
 680 ldns_dnssec_zone_create_nsec3s(ldns_dnssec_zone *zone,
 681                                                  ldns_rr_list *new_rrs,
 682                                                  uint8_t algorithm,
 683                                                  uint8_t flags,
 684                                                  uint16_t iterations,
 685                                                  uint8_t salt_length,
 686                                                  uint8_t *salt)
 687 {
 688         ldns_rbnode_t *first_name_node;
 689         ldns_rbnode_t *current_name_node;
 690         ldns_dnssec_name *current_name;
 691         ldns_status result = LDNS_STATUS_OK;
 692         ldns_rr *nsec_rr;
 693         ldns_rr_list *nsec3_list;
 694         uint32_t nsec_ttl;
 695         ldns_dnssec_rrsets *soa;
 696
 697         if (!zone || !new_rrs || !zone->names) {
 698                 return LDNS_STATUS_ERR;
 699         }
 700
 701         /* the TTL of NSEC rrs should be set to the minimum TTL of
 702          * the zone SOA (RFC4035 Section 2.3)
 703          */
 704         soa = ldns_dnssec_name_find_rrset(zone->soa, LDNS_RR_TYPE_SOA);
 705
 706         /* did the caller actually set it? if not,
 707          * fall back to default ttl
 708          */
 709         if (soa && soa->rrs && soa->rrs->rr) {
 710                 nsec_ttl = ldns_rdf2native_int32(ldns_rr_rdf(
 711                                                      soa->rrs->rr, 6));
 712         } else {
 713                 nsec_ttl = LDNS_DEFAULT_TTL;
 714         }
 715
 716         nsec3_list = ldns_rr_list_new();
 717
 718         first_name_node = ldns_dnssec_name_node_next_nonglue(
 719                                           ldns_rbtree_first(zone->names));
 720
 721         current_name_node = first_name_node;
 722
 723         while (current_name_node &&
 724                current_name_node != LDNS_RBTREE_NULL) {
 725                 current_name = (ldns_dnssec_name *) current_name_node->data;
 726                 nsec_rr = ldns_dnssec_create_nsec3(current_name,
 727                                                    NULL,
 728                                                    zone->soa->name,
 729                                                    algorithm,
 730                                                    flags,
 731                                                    iterations,
 732                                                    salt_length,
 733                                                    salt);
 734                 /* by default, our nsec based generator adds rrsigs
 735                  * remove the bitmap for empty nonterminals */
 736                 if (!current_name->rrsets) {
 737                         ldns_rdf_deep_free(ldns_rr_pop_rdf(nsec_rr));
 738                 }
 739                 ldns_rr_set_ttl(nsec_rr, nsec_ttl);
 740                 result = ldns_dnssec_name_add_rr(current_name, nsec_rr);
 741                 ldns_rr_list_push_rr(new_rrs, nsec_rr);
 742                 ldns_rr_list_push_rr(nsec3_list, nsec_rr);
 743                 current_name_node = ldns_dnssec_name_node_next_nonglue(
 744                                    ldns_rbtree_next(current_name_node));
 745         }
 746         if (result != LDNS_STATUS_OK) {
 747                 return result;
 748         }
 749
 750         ldns_rr_list_sort_nsec3(nsec3_list);
 751         result = ldns_dnssec_chain_nsec3_list(nsec3_list);
 752         if (result != LDNS_STATUS_OK) {
 753                 return result;
 754         }
 755
 756         ldns_rr_list_free(nsec3_list);
 757         return result;
 758 }
 759 #endif /* HAVE_SSL */
 760
 761 ldns_dnssec_rrs *
 762 ldns_dnssec_remove_signatures(ldns_dnssec_rrs *signatures,
 763                                                 ldns_key_list *key_list,
 764                                                 int (*func)(ldns_rr *, void *),
 765                                                 void *arg)
 766 {
 767         ldns_dnssec_rrs *base_rrs = signatures;
 768         ldns_dnssec_rrs *cur_rr = base_rrs;
 769         ldns_dnssec_rrs *prev_rr = NULL;
 770         ldns_dnssec_rrs *next_rr;
 771
 772         uint16_t keytag;
 773         size_t i;
 774
 775         key_list = key_list;
 776
 777         if (!cur_rr) {
 778                 switch(func(NULL, arg)) {
 779                 case LDNS_SIGNATURE_LEAVE_ADD_NEW:
 780                 case LDNS_SIGNATURE_REMOVE_ADD_NEW:
 781                 break;
 782                 case LDNS_SIGNATURE_LEAVE_NO_ADD:
 783                 case LDNS_SIGNATURE_REMOVE_NO_ADD:
 784                 ldns_key_list_set_use(key_list, false);
 785                 break;
 786                 default:
 787                         fprintf(stderr, "[XX] unknown return value from callback\n");
 788                         break;
 789                 }
 790                 return NULL;
 791         }
 792         (void)func(cur_rr->rr, arg);
 793
 794         while (cur_rr) {
 795                 next_rr = cur_rr->next;
 796
 797                 switch (func(cur_rr->rr, arg)) {
 798                 case  LDNS_SIGNATURE_LEAVE_ADD_NEW:
 799                         prev_rr = cur_rr;
 800                         break;
 801                 case LDNS_SIGNATURE_LEAVE_NO_ADD:
 802                         keytag = ldns_rdf2native_int16(
 803                                            ldns_rr_rrsig_keytag(cur_rr->rr));
 804                         for (i = 0; i < ldns_key_list_key_count(key_list); i++) {
 805                                 if (ldns_key_keytag(ldns_key_list_key(key_list, i)) ==
 806                                     keytag) {
 807                                         ldns_key_set_use(ldns_key_list_key(key_list, i),
 808                                                                   false);
 809                                 }
 810                         }
 811                         prev_rr = cur_rr;
 812                         break;
 813                 case LDNS_SIGNATURE_REMOVE_NO_ADD:
 814                         keytag = ldns_rdf2native_int16(
 815                                            ldns_rr_rrsig_keytag(cur_rr->rr));
 816                         for (i = 0; i < ldns_key_list_key_count(key_list); i++) {
 817                                 if (ldns_key_keytag(ldns_key_list_key(key_list, i))
 818                                     == keytag) {
 819                                         ldns_key_set_use(ldns_key_list_key(key_list, i),
 820                                                                   false);
 821                                 }
 822                         }
 823                         if (prev_rr) {
 824                                 prev_rr->next = next_rr;
 825                         } else {
 826                                 base_rrs = next_rr;
 827                         }
 828                         LDNS_FREE(cur_rr);
 829                         break;
 830                 case LDNS_SIGNATURE_REMOVE_ADD_NEW:
 831                         if (prev_rr) {
 832                                 prev_rr->next = next_rr;
 833                         } else {
 834                                 base_rrs = next_rr;
 835                         }
 836                         LDNS_FREE(cur_rr);
 837                         break;
 838                 default:
 839                         fprintf(stderr, "[XX] unknown return value from callback\n");
 840                         break;
 841                 }
 842                 cur_rr = next_rr;
 843         }
 844
 845         return base_rrs;
 846 }
 847
 848 #ifdef HAVE_SSL
 849 ldns_status
 850 ldns_dnssec_zone_create_rrsigs(ldns_dnssec_zone *zone,
 851                                ldns_rr_list *new_rrs,
 852                                ldns_key_list *key_list,
 853                                int (*func)(ldns_rr *, void*),
 854                                void *arg)
 855 {
 856         return ldns_dnssec_zone_create_rrsigs_flg(zone, new_rrs, key_list,
 857                 func, arg, 0);
 858 }
 859
 860 /** If there are KSKs use only them and mark ZSKs unused */
 861 static void
 862 ldns_key_list_filter_for_dnskey(ldns_key_list *key_list)
 863 {
 864         int saw_ksk = 0;
 865         size_t i;
 866         for(i=0; i<ldns_key_list_key_count(key_list); i++)
 867                 if((ldns_key_flags(ldns_key_list_key(key_list, i))&LDNS_KEY_SEP_KEY)) {
 868                         saw_ksk = 1;
 869                         break;
 870                 }
 871         if(!saw_ksk)
 872                 return;
 873         for(i=0; i<ldns_key_list_key_count(key_list); i++)
 874                 if(!(ldns_key_flags(ldns_key_list_key(key_list, i))&LDNS_KEY_SEP_KEY))
 875                         ldns_key_set_use(ldns_key_list_key(key_list, i), 0);
 876 }
 877
 878 /** If there are no ZSKs use KSK as ZSK */
 879 static void
 880 ldns_key_list_filter_for_non_dnskey(ldns_key_list *key_list)
 881 {
 882         int saw_zsk = 0;
 883         size_t i;
 884         for(i=0; i<ldns_key_list_key_count(key_list); i++)
 885                 if(!(ldns_key_flags(ldns_key_list_key(key_list, i))&LDNS_KEY_SEP_KEY)) {
 886                         saw_zsk = 1;
 887                         break;
 888                 }
 889         if(!saw_zsk)
 890                 return;
 891         /* else filter all KSKs */
 892         for(i=0; i<ldns_key_list_key_count(key_list); i++)
 893                 if((ldns_key_flags(ldns_key_list_key(key_list, i))&LDNS_KEY_SEP_KEY))
 894                         ldns_key_set_use(ldns_key_list_key(key_list, i), 0);
 895 }
 896
 897 ldns_status
 898 ldns_dnssec_zone_create_rrsigs_flg(ldns_dnssec_zone *zone,
 899                                ldns_rr_list *new_rrs,
 900                                ldns_key_list *key_list,
 901                                int (*func)(ldns_rr *, void*),
 902                                void *arg,
 903                                int flags)
 904 {
 905         ldns_status result = LDNS_STATUS_OK;
 906
 907         ldns_rbnode_t *cur_node;
 908         ldns_rr_list *rr_list;
 909
 910         ldns_dnssec_name *cur_name;
 911         ldns_dnssec_rrsets *cur_rrset;
 912         ldns_dnssec_rrs *cur_rr;
 913
 914         ldns_rr_list *siglist;
 915
 916         size_t i;
 917
 918         ldns_rr_list *pubkey_list = ldns_rr_list_new();
 919         zone = zone;
 920         new_rrs = new_rrs;
 921         key_list = key_list;
 922         for (i = 0; i<ldns_key_list_key_count(key_list); i++) {
 923                 ldns_rr_list_push_rr(pubkey_list,
 924                                                  ldns_key2rr(ldns_key_list_key(key_list, i)));
 925         }
 926         /* TODO: callback to see is list should be signed */
 927         /* TODO: remove 'old' signatures from signature list */
 928         cur_node = ldns_rbtree_first(zone->names);
 929         while (cur_node != LDNS_RBTREE_NULL) {
 930                 cur_name = (ldns_dnssec_name *) cur_node->data;
 931
 932                 if (!cur_name->is_glue) {
 933                         cur_rrset = cur_name->rrsets;
 934                         while (cur_rrset) {
 935                                 /* reset keys to use */
 936                                 ldns_key_list_set_use(key_list, true);
 937
 938                                 /* walk through old sigs, remove the old,
 939                                    and mark which keys (not) to use) */
 940                                 cur_rrset->signatures =
 941                                         ldns_dnssec_remove_signatures(cur_rrset->signatures,
 942                                                                                         key_list,
 943                                                                                         func,
 944                                                                                         arg);
 945                                 if(!(flags&LDNS_SIGN_DNSKEY_WITH_ZSK) &&
 946                                         cur_rrset->type == LDNS_RR_TYPE_DNSKEY)
 947                                         ldns_key_list_filter_for_dnskey(key_list);
 948
 949                                 if(cur_rrset->type != LDNS_RR_TYPE_DNSKEY)
 950                                         ldns_key_list_filter_for_non_dnskey(key_list);
 951
 952                                 /* TODO: just set count to zero? */
 953                                 rr_list = ldns_rr_list_new();
 954
 955                                 cur_rr = cur_rrset->rrs;
 956                                 while (cur_rr) {
 957                                         ldns_rr_list_push_rr(rr_list, cur_rr->rr);
 958                                         cur_rr = cur_rr->next;
 959                                 }
 960
 961                                 /* only sign non-delegation RRsets */
 962                                 /* (glue should have been marked earlier) */
 963                                 if ((ldns_rr_list_type(rr_list) != LDNS_RR_TYPE_NS ||
 964                                         ldns_dname_compare(ldns_rr_list_owner(rr_list),
 965                                         zone->soa->name) == 0) &&
 966                                         /* OK, there is also the possibility that the record
 967                                          * is glue, but at the same owner name as other records that
 968                                          * are not NS nor A/AAAA. Bleh, our current data structure
 969                                          * doesn't really support that... */
 970                                         !((ldns_rr_list_type(rr_list) == LDNS_RR_TYPE_A ||
 971                                          ldns_rr_list_type(rr_list) == LDNS_RR_TYPE_AAAA) &&
 972                                          !ldns_dname_compare(ldns_rr_list_owner(rr_list), zone->soa->name) == 0 &&
 973                                          ldns_dnssec_zone_find_rrset(zone, ldns_rr_list_owner(rr_list), LDNS_RR_TYPE_NS)
 974                                          )) {
 975
 976                                         siglist = ldns_sign_public(rr_list, key_list);
 977                                         for (i = 0; i < ldns_rr_list_rr_count(siglist); i++) {
 978                                                 if (cur_rrset->signatures) {
 979                                                         result = ldns_dnssec_rrs_add_rr(cur_rrset->signatures,
 980                                                                                            ldns_rr_list_rr(siglist,
 981                                                                                                                     i));
 982                                                 } else {
 983                                                         cur_rrset->signatures = ldns_dnssec_rrs_new();
 984                                                         cur_rrset->signatures->rr =
 985                                                                 ldns_rr_list_rr(siglist, i);
 986                                                         ldns_rr_list_push_rr(new_rrs,
 987                                                                                          ldns_rr_list_rr(siglist,
 988                                                                                                                   i));
 989                                                 }
 990                                         }
 991                                         ldns_rr_list_free(siglist);
 992                                 }
 993
 994                                 ldns_rr_list_free(rr_list);
 995
 996                                 cur_rrset = cur_rrset->next;
 997                         }
 998
 999                         /* sign the nsec */
1000                         ldns_key_list_set_use(key_list, true);
1001                         cur_name->nsec_signatures =
1002                                 ldns_dnssec_remove_signatures(cur_name->nsec_signatures,
1003                                                                                 key_list,
1004                                                                                 func,
1005                                                                                 arg);
1006                         ldns_key_list_filter_for_non_dnskey(key_list);
1007
1008                         rr_list = ldns_rr_list_new();
1009                         ldns_rr_list_push_rr(rr_list, cur_name->nsec);
1010                         siglist = ldns_sign_public(rr_list, key_list);
1011
1012                         for (i = 0; i < ldns_rr_list_rr_count(siglist); i++) {
1013                                 if (cur_name->nsec_signatures) {
1014                                         result = ldns_dnssec_rrs_add_rr(cur_name->nsec_signatures,
1015                                                                            ldns_rr_list_rr(siglist, i));
1016                                 } else {
1017                                         cur_name->nsec_signatures = ldns_dnssec_rrs_new();
1018                                         cur_name->nsec_signatures->rr =
1019                                                 ldns_rr_list_rr(siglist, i);
1020                                         ldns_rr_list_push_rr(new_rrs,
1021                                                                          ldns_rr_list_rr(siglist, i));
1022                                 }
1023                         }
1024
1025                         ldns_rr_list_free(siglist);
1026                         ldns_rr_list_free(rr_list);
1027                 }
1028                 cur_node = ldns_rbtree_next(cur_node);
1029         }
1030
1031         ldns_rr_list_deep_free(pubkey_list);
1032         return result;
1033 }
1034
1035 ldns_status
1036 ldns_dnssec_zone_sign(ldns_dnssec_zone *zone,
1037                                   ldns_rr_list *new_rrs,
1038                                   ldns_key_list *key_list,
1039                                   int (*func)(ldns_rr *, void *),
1040                                   void *arg)
1041 {
1042         return ldns_dnssec_zone_sign_flg(zone, new_rrs, key_list, func, arg, 0);
1043 }
1044
1045 ldns_status
1046 ldns_dnssec_zone_sign_flg(ldns_dnssec_zone *zone,
1047                                   ldns_rr_list *new_rrs,
1048                                   ldns_key_list *key_list,
1049                                   int (*func)(ldns_rr *, void *),
1050                                   void *arg,
1051                                   int flags)
1052 {
1053         ldns_status result = LDNS_STATUS_OK;
1054
1055         if (!zone || !new_rrs || !key_list) {
1056                 return LDNS_STATUS_ERR;
1057         }
1058
1059         /* zone is already sorted */
1060         result = ldns_dnssec_zone_mark_glue(zone);
1061         if (result != LDNS_STATUS_OK) {
1062                 return result;
1063         }
1064
1065         /* check whether we need to add nsecs */
1066         if (zone->names && !((ldns_dnssec_name *)zone->names->root->data)->nsec) {
1067                 result = ldns_dnssec_zone_create_nsecs(zone, new_rrs);
1068                 if (result != LDNS_STATUS_OK) {
1069                         return result;
1070                 }
1071         }
1072
1073         result = ldns_dnssec_zone_create_rrsigs_flg(zone,
1074                                         new_rrs,
1075                                         key_list,
1076                                         func,
1077                                         arg,
1078                                         flags);
1079
1080         return result;
1081 }
1082
1083 ldns_status
1084 ldns_dnssec_zone_sign_nsec3(ldns_dnssec_zone *zone,
1085                                            ldns_rr_list *new_rrs,
1086                                            ldns_key_list *key_list,
1087                                            int (*func)(ldns_rr *, void *),
1088                                            void *arg,
1089                                            uint8_t algorithm,
1090                                            uint8_t flags,
1091                                            uint16_t iterations,
1092                                            uint8_t salt_length,
1093                                            uint8_t *salt)
1094 {
1095         return ldns_dnssec_zone_sign_nsec3_flg(zone, new_rrs, key_list,
1096                 func, arg, algorithm, flags, iterations, salt_length, salt, 0);
1097 }
1098
1099 ldns_status
1100 ldns_dnssec_zone_sign_nsec3_flg(ldns_dnssec_zone *zone,
1101                                            ldns_rr_list *new_rrs,
1102                                            ldns_key_list *key_list,
1103                                            int (*func)(ldns_rr *, void *),
1104                                            void *arg,
1105                                            uint8_t algorithm,
1106                                            uint8_t flags,
1107                                            uint16_t iterations,
1108                                            uint8_t salt_length,
1109                                            uint8_t *salt,
1110                                            int signflags)
1111 {
1112         ldns_rr *nsec3, *nsec3params;
1113         ldns_status result = LDNS_STATUS_OK;
1114
1115         /* zone is already sorted */
1116         result = ldns_dnssec_zone_mark_glue(zone);
1117         if (result != LDNS_STATUS_OK) {
1118                 return result;
1119         }
1120
1121         /* TODO if there are already nsec3s presents and their
1122          * parameters are the same as these, we don't have to recreate
1123          */
1124         if (zone->names) {
1125                 /* add empty nonterminals */
1126                 result = ldns_dnssec_zone_add_empty_nonterminals(zone);
1127                 if (result != LDNS_STATUS_OK) {
1128                         return result;
1129                 }
1130
1131                 nsec3 = ((ldns_dnssec_name *)zone->names->root->data)->nsec;
1132                 if (nsec3 && ldns_rr_get_type(nsec3) == LDNS_RR_TYPE_NSEC3) {
1133                         /* no need to recreate */
1134                 } else {
1135                         if (!ldns_dnssec_zone_find_rrset(zone,
1136                                                                            zone->soa->name,
1137                                                                            LDNS_RR_TYPE_NSEC3PARAMS)) {
1138                                 /* create and add the nsec3params rr */
1139                                 nsec3params =
1140                                         ldns_rr_new_frm_type(LDNS_RR_TYPE_NSEC3PARAMS);
1141                                 ldns_rr_set_owner(nsec3params,
1142                                                            ldns_rdf_clone(zone->soa->name));
1143                                 ldns_nsec3_add_param_rdfs(nsec3params,
1144                                                                          algorithm,
1145                                                                          flags,
1146                                                                          iterations,
1147                                                                          salt_length,
1148                                                                          salt);
1149                                 /* always set bit 7 of the flags to zero, according to
1150                                  * rfc5155 section 11 */
1151                                 ldns_set_bit(ldns_rdf_data(ldns_rr_rdf(nsec3params, 1)), 7, 0);
1152                                 result = ldns_dnssec_zone_add_rr(zone, nsec3params);
1153                                 if (result != LDNS_STATUS_OK) {
1154                                         return result;
1155                                 }
1156                                 ldns_rr_list_push_rr(new_rrs, nsec3params);
1157                         }
1158                         result = ldns_dnssec_zone_create_nsec3s(zone,
1159                                                                                         new_rrs,
1160                                                                                         algorithm,
1161                                                                                         flags,
1162                                                                                         iterations,
1163                                                                                         salt_length,
1164                                                                                         salt);
1165                         if (result != LDNS_STATUS_OK) {
1166                                 return result;
1167                         }
1168                 }
1169
1170                 result = ldns_dnssec_zone_create_rrsigs_flg(zone,
1171                                                 new_rrs,
1172                                                 key_list,
1173                                                 func,
1174                                                 arg,
1175                                                 signflags);
1176         }
1177
1178         return result;
1179 }
1180
1181
1182 ldns_zone *
1183 ldns_zone_sign(const ldns_zone *zone, ldns_key_list *key_list)
1184 {
1185         ldns_dnssec_zone *dnssec_zone;
1186         ldns_zone *signed_zone;
1187         ldns_rr_list *new_rrs;
1188         size_t i;
1189
1190         signed_zone = ldns_zone_new();
1191         dnssec_zone = ldns_dnssec_zone_new();
1192
1193         (void) ldns_dnssec_zone_add_rr(dnssec_zone, ldns_zone_soa(zone));
1194         ldns_zone_set_soa(signed_zone, ldns_rr_clone(ldns_zone_soa(zone)));
1195
1196         for (i = 0; i < ldns_rr_list_rr_count(ldns_zone_rrs(zone)); i++) {
1197                 (void) ldns_dnssec_zone_add_rr(dnssec_zone,
1198                                                                  ldns_rr_list_rr(ldns_zone_rrs(zone),
1199                                                                                           i));
1200                 ldns_zone_push_rr(signed_zone,
1201                                            ldns_rr_clone(ldns_rr_list_rr(ldns_zone_rrs(zone),
1202                                                                                            i)));
1203         }
1204
1205         new_rrs = ldns_rr_list_new();
1206         (void) ldns_dnssec_zone_sign(dnssec_zone,
1207                                                     new_rrs,
1208                                                     key_list,
1209                                                     ldns_dnssec_default_replace_signatures,
1210                                                     NULL);
1211
1212         for (i = 0; i < ldns_rr_list_rr_count(new_rrs); i++) {
1213                 ldns_rr_list_push_rr(ldns_zone_rrs(signed_zone),
1214                                                  ldns_rr_clone(ldns_rr_list_rr(new_rrs, i)));
1215         }
1216
1217         ldns_rr_list_deep_free(new_rrs);
1218         ldns_dnssec_zone_free(dnssec_zone);
1219
1220         return signed_zone;
1221 }
1222
1223 ldns_zone *
1224 ldns_zone_sign_nsec3(ldns_zone *zone, ldns_key_list *key_list, uint8_t algorithm, uint8_t flags, uint16_t iterations, uint8_t salt_length, uint8_t *salt)
1225 {
1226         ldns_dnssec_zone *dnssec_zone;
1227         ldns_zone *signed_zone;
1228         ldns_rr_list *new_rrs;
1229         size_t i;
1230
1231         signed_zone = ldns_zone_new();
1232         dnssec_zone = ldns_dnssec_zone_new();
1233
1234         (void) ldns_dnssec_zone_add_rr(dnssec_zone, ldns_zone_soa(zone));
1235         ldns_zone_set_soa(signed_zone, ldns_rr_clone(ldns_zone_soa(zone)));
1236
1237         for (i = 0; i < ldns_rr_list_rr_count(ldns_zone_rrs(zone)); i++) {
1238                 (void) ldns_dnssec_zone_add_rr(dnssec_zone,
1239                                                                  ldns_rr_list_rr(ldns_zone_rrs(zone),
1240                                                                                           i));
1241                 ldns_zone_push_rr(signed_zone,
1242                                            ldns_rr_clone(ldns_rr_list_rr(ldns_zone_rrs(zone),
1243                                                                                            i)));
1244         }
1245
1246         new_rrs = ldns_rr_list_new();
1247         (void) ldns_dnssec_zone_sign_nsec3(dnssec_zone,
1248                                                                 new_rrs,
1249                                                                 key_list,
1250                                                                 ldns_dnssec_default_replace_signatures,
1251                                                                 NULL,
1252                                                                 algorithm,
1253                                                                 flags,
1254                                                                 iterations,
1255                                                                 salt_length,
1256                                                                 salt);
1257
1258         for (i = 0; i < ldns_rr_list_rr_count(new_rrs); i++) {
1259                 ldns_rr_list_push_rr(ldns_zone_rrs(signed_zone),
1260                                                  ldns_rr_clone(ldns_rr_list_rr(new_rrs, i)));
1261         }
1262
1263         ldns_rr_list_deep_free(new_rrs);
1264         ldns_dnssec_zone_free(dnssec_zone);
1265
1266         return signed_zone;
1267 }
1268 #endif /* HAVE_SSL */
1269