1 /* 2 * iterator/iter_delegpt.c - delegation point with NS and address information. 3 * 4 * Copyright (c) 2007, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * This file implements the Delegation Point. It contains a list of name servers 40 * and their addresses if known. 41 */ 42 #include "config.h" 43 #include "iterator/iter_delegpt.h" 44 #include "services/cache/dns.h" 45 #include "util/regional.h" 46 #include "util/data/dname.h" 47 #include "util/data/packed_rrset.h" 48 #include "util/data/msgreply.h" 49 #include "util/net_help.h" 50 #include "sldns/rrdef.h" 51 #include "sldns/sbuffer.h" 52 53 struct delegpt* 54 delegpt_create(struct regional* region) 55 { 56 struct delegpt* dp=(struct delegpt*)regional_alloc( 57 region, sizeof(*dp)); 58 if(!dp) 59 return NULL; 60 memset(dp, 0, sizeof(*dp)); 61 return dp; 62 } 63 64 struct delegpt* delegpt_copy(struct delegpt* dp, struct regional* region) 65 { 66 struct delegpt* copy = delegpt_create(region); 67 struct delegpt_ns* ns; 68 struct delegpt_addr* a; 69 if(!copy) 70 return NULL; 71 if(!delegpt_set_name(copy, region, dp->name)) 72 return NULL; 73 copy->bogus = dp->bogus; 74 copy->has_parent_side_NS = dp->has_parent_side_NS; 75 copy->ssl_upstream = dp->ssl_upstream; 76 copy->tcp_upstream = dp->tcp_upstream; 77 for(ns = dp->nslist; ns; ns = ns->next) { 78 if(!delegpt_add_ns(copy, region, ns->name, ns->lame, 79 ns->tls_auth_name, ns->port)) 80 return NULL; 81 copy->nslist->cache_lookup_count = ns->cache_lookup_count; 82 copy->nslist->resolved = ns->resolved; 83 copy->nslist->got4 = ns->got4; 84 copy->nslist->got6 = ns->got6; 85 copy->nslist->done_pside4 = ns->done_pside4; 86 copy->nslist->done_pside6 = ns->done_pside6; 87 } 88 for(a = dp->target_list; a; a = a->next_target) { 89 if(!delegpt_add_addr(copy, region, &a->addr, a->addrlen, 90 a->bogus, a->lame, a->tls_auth_name, -1, NULL)) 91 return NULL; 92 } 93 return copy; 94 } 95 96 int 97 delegpt_set_name(struct delegpt* dp, struct regional* region, uint8_t* name) 98 { 99 log_assert(!dp->dp_type_mlc); 100 dp->namelabs = dname_count_size_labels(name, &dp->namelen); 101 dp->name = regional_alloc_init(region, name, dp->namelen); 102 return dp->name != 0; 103 } 104 105 int 106 delegpt_add_ns(struct delegpt* dp, struct regional* region, uint8_t* name, 107 uint8_t lame, char* tls_auth_name, int port) 108 { 109 struct delegpt_ns* ns; 110 size_t len; 111 (void)dname_count_size_labels(name, &len); 112 log_assert(!dp->dp_type_mlc); 113 /* slow check for duplicates to avoid counting failures when 114 * adding the same server as a dependency twice */ 115 if(delegpt_find_ns(dp, name, len)) 116 return 1; 117 ns = (struct delegpt_ns*)regional_alloc(region, 118 sizeof(struct delegpt_ns)); 119 if(!ns) 120 return 0; 121 ns->next = dp->nslist; 122 ns->namelen = len; 123 dp->nslist = ns; 124 ns->name = regional_alloc_init(region, name, ns->namelen); 125 ns->cache_lookup_count = 0; 126 ns->resolved = 0; 127 ns->got4 = 0; 128 ns->got6 = 0; 129 ns->lame = lame; 130 ns->done_pside4 = 0; 131 ns->done_pside6 = 0; 132 ns->port = port; 133 if(tls_auth_name) { 134 ns->tls_auth_name = regional_strdup(region, tls_auth_name); 135 if(!ns->tls_auth_name) 136 return 0; 137 } else { 138 ns->tls_auth_name = NULL; 139 } 140 return ns->name != 0; 141 } 142 143 struct delegpt_ns* 144 delegpt_find_ns(struct delegpt* dp, uint8_t* name, size_t namelen) 145 { 146 struct delegpt_ns* p = dp->nslist; 147 while(p) { 148 if(namelen == p->namelen && 149 query_dname_compare(name, p->name) == 0) { 150 return p; 151 } 152 p = p->next; 153 } 154 return NULL; 155 } 156 157 struct delegpt_addr* 158 delegpt_find_addr(struct delegpt* dp, struct sockaddr_storage* addr, 159 socklen_t addrlen) 160 { 161 struct delegpt_addr* p = dp->target_list; 162 while(p) { 163 if(sockaddr_cmp_addr(addr, addrlen, &p->addr, p->addrlen)==0 164 && ((struct sockaddr_in*)addr)->sin_port == 165 ((struct sockaddr_in*)&p->addr)->sin_port) { 166 return p; 167 } 168 p = p->next_target; 169 } 170 return NULL; 171 } 172 173 int 174 delegpt_add_target(struct delegpt* dp, struct regional* region, 175 uint8_t* name, size_t namelen, struct sockaddr_storage* addr, 176 socklen_t addrlen, uint8_t bogus, uint8_t lame, int* additions) 177 { 178 struct delegpt_ns* ns = delegpt_find_ns(dp, name, namelen); 179 log_assert(!dp->dp_type_mlc); 180 if(!ns) { 181 /* ignore it */ 182 return 1; 183 } 184 if(!lame) { 185 if(addr_is_ip6(addr, addrlen)) 186 ns->got6 = 1; 187 else ns->got4 = 1; 188 if(ns->got4 && ns->got6) 189 ns->resolved = 1; 190 } else { 191 if(addr_is_ip6(addr, addrlen)) 192 ns->done_pside6 = 1; 193 else ns->done_pside4 = 1; 194 } 195 log_assert(ns->port>0); 196 return delegpt_add_addr(dp, region, addr, addrlen, bogus, lame, 197 ns->tls_auth_name, ns->port, additions); 198 } 199 200 int 201 delegpt_add_addr(struct delegpt* dp, struct regional* region, 202 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t bogus, 203 uint8_t lame, char* tls_auth_name, int port, int* additions) 204 { 205 struct delegpt_addr* a; 206 log_assert(!dp->dp_type_mlc); 207 if(port != -1) { 208 log_assert(port>0); 209 sockaddr_store_port(addr, addrlen, port); 210 } 211 /* check for duplicates */ 212 if((a = delegpt_find_addr(dp, addr, addrlen))) { 213 if(bogus) 214 a->bogus = bogus; 215 if(!lame) 216 a->lame = 0; 217 return 1; 218 } 219 if(additions) 220 *additions = 1; 221 222 a = (struct delegpt_addr*)regional_alloc(region, 223 sizeof(struct delegpt_addr)); 224 if(!a) 225 return 0; 226 a->next_target = dp->target_list; 227 dp->target_list = a; 228 a->next_result = 0; 229 a->next_usable = dp->usable_list; 230 dp->usable_list = a; 231 memcpy(&a->addr, addr, addrlen); 232 a->addrlen = addrlen; 233 a->attempts = 0; 234 a->bogus = bogus; 235 a->lame = lame; 236 a->dnsseclame = 0; 237 if(tls_auth_name) { 238 a->tls_auth_name = regional_strdup(region, tls_auth_name); 239 if(!a->tls_auth_name) 240 return 0; 241 } else { 242 a->tls_auth_name = NULL; 243 } 244 return 1; 245 } 246 247 void 248 delegpt_count_ns(struct delegpt* dp, size_t* numns, size_t* missing) 249 { 250 struct delegpt_ns* ns; 251 *numns = 0; 252 *missing = 0; 253 for(ns = dp->nslist; ns; ns = ns->next) { 254 (*numns)++; 255 if(!ns->resolved) 256 (*missing)++; 257 } 258 } 259 260 void 261 delegpt_count_addr(struct delegpt* dp, size_t* numaddr, size_t* numres, 262 size_t* numavail) 263 { 264 struct delegpt_addr* a; 265 *numaddr = 0; 266 *numres = 0; 267 *numavail = 0; 268 for(a = dp->target_list; a; a = a->next_target) { 269 (*numaddr)++; 270 } 271 for(a = dp->result_list; a; a = a->next_result) { 272 (*numres)++; 273 } 274 for(a = dp->usable_list; a; a = a->next_usable) { 275 (*numavail)++; 276 } 277 } 278 279 void delegpt_log(enum verbosity_value v, struct delegpt* dp) 280 { 281 char buf[LDNS_MAX_DOMAINLEN+1]; 282 struct delegpt_ns* ns; 283 struct delegpt_addr* a; 284 size_t missing=0, numns=0, numaddr=0, numres=0, numavail=0; 285 if(verbosity < v) 286 return; 287 dname_str(dp->name, buf); 288 if(dp->nslist == NULL && dp->target_list == NULL) { 289 log_info("DelegationPoint<%s>: empty", buf); 290 return; 291 } 292 delegpt_count_ns(dp, &numns, &missing); 293 delegpt_count_addr(dp, &numaddr, &numres, &numavail); 294 log_info("DelegationPoint<%s>: %u names (%u missing), " 295 "%u addrs (%u result, %u avail)%s", 296 buf, (unsigned)numns, (unsigned)missing, 297 (unsigned)numaddr, (unsigned)numres, (unsigned)numavail, 298 (dp->has_parent_side_NS?" parentNS":" cacheNS")); 299 if(verbosity >= VERB_ALGO) { 300 for(ns = dp->nslist; ns; ns = ns->next) { 301 dname_str(ns->name, buf); 302 log_info(" %s %s%s%s%s%s%s%s", buf, 303 (ns->resolved?"*":""), 304 (ns->got4?" A":""), (ns->got6?" AAAA":""), 305 (dp->bogus?" BOGUS":""), (ns->lame?" PARENTSIDE":""), 306 (ns->done_pside4?" PSIDE_A":""), 307 (ns->done_pside6?" PSIDE_AAAA":"")); 308 } 309 for(a = dp->target_list; a; a = a->next_target) { 310 char s[128]; 311 const char* str = " "; 312 if(a->bogus && a->lame) str = " BOGUS ADDR_LAME "; 313 else if(a->bogus) str = " BOGUS "; 314 else if(a->lame) str = " ADDR_LAME "; 315 if(a->tls_auth_name) 316 snprintf(s, sizeof(s), "%s[%s]", str, 317 a->tls_auth_name); 318 else snprintf(s, sizeof(s), "%s", str); 319 log_addr(VERB_ALGO, s, &a->addr, a->addrlen); 320 } 321 } 322 } 323 324 void 325 delegpt_add_unused_targets(struct delegpt* dp) 326 { 327 struct delegpt_addr* usa = dp->usable_list; 328 dp->usable_list = NULL; 329 while(usa) { 330 usa->next_result = dp->result_list; 331 dp->result_list = usa; 332 usa = usa->next_usable; 333 } 334 } 335 336 size_t 337 delegpt_count_targets(struct delegpt* dp) 338 { 339 struct delegpt_addr* a; 340 size_t n = 0; 341 for(a = dp->target_list; a; a = a->next_target) 342 n++; 343 return n; 344 } 345 346 size_t 347 delegpt_count_missing_targets(struct delegpt* dp, int* alllame) 348 { 349 struct delegpt_ns* ns; 350 size_t n = 0, nlame = 0; 351 for(ns = dp->nslist; ns; ns = ns->next) { 352 if(ns->resolved) continue; 353 n++; 354 if(ns->lame) nlame++; 355 } 356 if(alllame && n == nlame) *alllame = 1; 357 return n; 358 } 359 360 /** find NS rrset in given list */ 361 static struct ub_packed_rrset_key* 362 find_NS(struct reply_info* rep, size_t from, size_t to) 363 { 364 size_t i; 365 for(i=from; i<to; i++) { 366 if(ntohs(rep->rrsets[i]->rk.type) == LDNS_RR_TYPE_NS) 367 return rep->rrsets[i]; 368 } 369 return NULL; 370 } 371 372 struct delegpt* 373 delegpt_from_message(struct dns_msg* msg, struct regional* region) 374 { 375 struct ub_packed_rrset_key* ns_rrset = NULL; 376 struct delegpt* dp; 377 size_t i; 378 /* look for NS records in the authority section... */ 379 ns_rrset = find_NS(msg->rep, msg->rep->an_numrrsets, 380 msg->rep->an_numrrsets+msg->rep->ns_numrrsets); 381 382 /* In some cases (even legitimate, perfectly legal cases), the 383 * NS set for the "referral" might be in the answer section. */ 384 if(!ns_rrset) 385 ns_rrset = find_NS(msg->rep, 0, msg->rep->an_numrrsets); 386 387 /* If there was no NS rrset in the authority section, then this 388 * wasn't a referral message. (It might not actually be a 389 * referral message anyway) */ 390 if(!ns_rrset) 391 return NULL; 392 393 /* If we found any, then Yay! we have a delegation point. */ 394 dp = delegpt_create(region); 395 if(!dp) 396 return NULL; 397 dp->has_parent_side_NS = 1; /* created from message */ 398 if(!delegpt_set_name(dp, region, ns_rrset->rk.dname)) 399 return NULL; 400 if(!delegpt_rrset_add_ns(dp, region, ns_rrset, 0)) 401 return NULL; 402 403 /* add glue, A and AAAA in answer and additional section */ 404 for(i=0; i<msg->rep->rrset_count; i++) { 405 struct ub_packed_rrset_key* s = msg->rep->rrsets[i]; 406 /* skip auth section. FIXME really needed?*/ 407 if(msg->rep->an_numrrsets <= i && 408 i < (msg->rep->an_numrrsets+msg->rep->ns_numrrsets)) 409 continue; 410 411 if(ntohs(s->rk.type) == LDNS_RR_TYPE_A) { 412 if(!delegpt_add_rrset_A(dp, region, s, 0, NULL)) 413 return NULL; 414 } else if(ntohs(s->rk.type) == LDNS_RR_TYPE_AAAA) { 415 if(!delegpt_add_rrset_AAAA(dp, region, s, 0, NULL)) 416 return NULL; 417 } 418 } 419 return dp; 420 } 421 422 int 423 delegpt_rrset_add_ns(struct delegpt* dp, struct regional* region, 424 struct ub_packed_rrset_key* ns_rrset, uint8_t lame) 425 { 426 struct packed_rrset_data* nsdata = (struct packed_rrset_data*) 427 ns_rrset->entry.data; 428 size_t i; 429 log_assert(!dp->dp_type_mlc); 430 if(nsdata->security == sec_status_bogus) 431 dp->bogus = 1; 432 for(i=0; i<nsdata->count; i++) { 433 if(nsdata->rr_len[i] < 2+1) continue; /* len + root label */ 434 if(dname_valid(nsdata->rr_data[i]+2, nsdata->rr_len[i]-2) != 435 (size_t)sldns_read_uint16(nsdata->rr_data[i])) 436 continue; /* bad format */ 437 /* add rdata of NS (= wirefmt dname), skip rdatalen bytes */ 438 if(!delegpt_add_ns(dp, region, nsdata->rr_data[i]+2, lame, 439 NULL, UNBOUND_DNS_PORT)) 440 return 0; 441 } 442 return 1; 443 } 444 445 int 446 delegpt_add_rrset_A(struct delegpt* dp, struct regional* region, 447 struct ub_packed_rrset_key* ak, uint8_t lame, int* additions) 448 { 449 struct packed_rrset_data* d=(struct packed_rrset_data*)ak->entry.data; 450 size_t i; 451 struct sockaddr_in sa; 452 socklen_t len = (socklen_t)sizeof(sa); 453 log_assert(!dp->dp_type_mlc); 454 memset(&sa, 0, len); 455 sa.sin_family = AF_INET; 456 for(i=0; i<d->count; i++) { 457 if(d->rr_len[i] != 2 + INET_SIZE) 458 continue; 459 memmove(&sa.sin_addr, d->rr_data[i]+2, INET_SIZE); 460 if(!delegpt_add_target(dp, region, ak->rk.dname, 461 ak->rk.dname_len, (struct sockaddr_storage*)&sa, 462 len, (d->security==sec_status_bogus), lame, additions)) 463 return 0; 464 } 465 return 1; 466 } 467 468 int 469 delegpt_add_rrset_AAAA(struct delegpt* dp, struct regional* region, 470 struct ub_packed_rrset_key* ak, uint8_t lame, int* additions) 471 { 472 struct packed_rrset_data* d=(struct packed_rrset_data*)ak->entry.data; 473 size_t i; 474 struct sockaddr_in6 sa; 475 socklen_t len = (socklen_t)sizeof(sa); 476 log_assert(!dp->dp_type_mlc); 477 memset(&sa, 0, len); 478 sa.sin6_family = AF_INET6; 479 for(i=0; i<d->count; i++) { 480 if(d->rr_len[i] != 2 + INET6_SIZE) /* rdatalen + len of IP6 */ 481 continue; 482 memmove(&sa.sin6_addr, d->rr_data[i]+2, INET6_SIZE); 483 if(!delegpt_add_target(dp, region, ak->rk.dname, 484 ak->rk.dname_len, (struct sockaddr_storage*)&sa, 485 len, (d->security==sec_status_bogus), lame, additions)) 486 return 0; 487 } 488 return 1; 489 } 490 491 int 492 delegpt_add_rrset(struct delegpt* dp, struct regional* region, 493 struct ub_packed_rrset_key* rrset, uint8_t lame, int* additions) 494 { 495 if(!rrset) 496 return 1; 497 if(ntohs(rrset->rk.type) == LDNS_RR_TYPE_NS) 498 return delegpt_rrset_add_ns(dp, region, rrset, lame); 499 else if(ntohs(rrset->rk.type) == LDNS_RR_TYPE_A) 500 return delegpt_add_rrset_A(dp, region, rrset, lame, additions); 501 else if(ntohs(rrset->rk.type) == LDNS_RR_TYPE_AAAA) 502 return delegpt_add_rrset_AAAA(dp, region, rrset, lame, 503 additions); 504 log_warn("Unknown rrset type added to delegpt"); 505 return 1; 506 } 507 508 void delegpt_mark_neg(struct delegpt_ns* ns, uint16_t qtype) 509 { 510 if(ns) { 511 if(qtype == LDNS_RR_TYPE_A) 512 ns->got4 = 2; 513 else if(qtype == LDNS_RR_TYPE_AAAA) 514 ns->got6 = 2; 515 if(ns->got4 && ns->got6) 516 ns->resolved = 1; 517 } 518 } 519 520 void delegpt_add_neg_msg(struct delegpt* dp, struct msgreply_entry* msg) 521 { 522 struct reply_info* rep = (struct reply_info*)msg->entry.data; 523 if(!rep) return; 524 525 /* if error or no answers */ 526 if(FLAGS_GET_RCODE(rep->flags) != 0 || rep->an_numrrsets == 0) { 527 struct delegpt_ns* ns = delegpt_find_ns(dp, msg->key.qname, 528 msg->key.qname_len); 529 delegpt_mark_neg(ns, msg->key.qtype); 530 } 531 } 532 533 void delegpt_no_ipv6(struct delegpt* dp) 534 { 535 struct delegpt_ns* ns; 536 for(ns = dp->nslist; ns; ns = ns->next) { 537 /* no ipv6, so only ipv4 is enough to resolve a nameserver */ 538 if(ns->got4) 539 ns->resolved = 1; 540 } 541 } 542 543 void delegpt_no_ipv4(struct delegpt* dp) 544 { 545 struct delegpt_ns* ns; 546 for(ns = dp->nslist; ns; ns = ns->next) { 547 /* no ipv4, so only ipv6 is enough to resolve a nameserver */ 548 if(ns->got6) 549 ns->resolved = 1; 550 } 551 } 552 553 struct delegpt* delegpt_create_mlc(uint8_t* name) 554 { 555 struct delegpt* dp=(struct delegpt*)calloc(1, sizeof(*dp)); 556 if(!dp) 557 return NULL; 558 dp->dp_type_mlc = 1; 559 if(name) { 560 dp->namelabs = dname_count_size_labels(name, &dp->namelen); 561 dp->name = memdup(name, dp->namelen); 562 if(!dp->name) { 563 free(dp); 564 return NULL; 565 } 566 } 567 return dp; 568 } 569 570 void delegpt_free_mlc(struct delegpt* dp) 571 { 572 struct delegpt_ns* n, *nn; 573 struct delegpt_addr* a, *na; 574 if(!dp) return; 575 log_assert(dp->dp_type_mlc); 576 n = dp->nslist; 577 while(n) { 578 nn = n->next; 579 free(n->name); 580 free(n->tls_auth_name); 581 free(n); 582 n = nn; 583 } 584 a = dp->target_list; 585 while(a) { 586 na = a->next_target; 587 free(a->tls_auth_name); 588 free(a); 589 a = na; 590 } 591 free(dp->name); 592 free(dp); 593 } 594 595 int delegpt_set_name_mlc(struct delegpt* dp, uint8_t* name) 596 { 597 log_assert(dp->dp_type_mlc); 598 dp->namelabs = dname_count_size_labels(name, &dp->namelen); 599 dp->name = memdup(name, dp->namelen); 600 return (dp->name != NULL); 601 } 602 603 int delegpt_add_ns_mlc(struct delegpt* dp, uint8_t* name, uint8_t lame, 604 char* tls_auth_name, int port) 605 { 606 struct delegpt_ns* ns; 607 size_t len; 608 (void)dname_count_size_labels(name, &len); 609 log_assert(dp->dp_type_mlc); 610 /* slow check for duplicates to avoid counting failures when 611 * adding the same server as a dependency twice */ 612 if(delegpt_find_ns(dp, name, len)) 613 return 1; 614 ns = (struct delegpt_ns*)malloc(sizeof(struct delegpt_ns)); 615 if(!ns) 616 return 0; 617 ns->namelen = len; 618 ns->name = memdup(name, ns->namelen); 619 if(!ns->name) { 620 free(ns); 621 return 0; 622 } 623 ns->next = dp->nslist; 624 dp->nslist = ns; 625 ns->cache_lookup_count = 0; 626 ns->resolved = 0; 627 ns->got4 = 0; 628 ns->got6 = 0; 629 ns->lame = (uint8_t)lame; 630 ns->done_pside4 = 0; 631 ns->done_pside6 = 0; 632 ns->port = port; 633 if(tls_auth_name) { 634 ns->tls_auth_name = strdup(tls_auth_name); 635 if(!ns->tls_auth_name) { 636 free(ns->name); 637 free(ns); 638 return 0; 639 } 640 } else { 641 ns->tls_auth_name = NULL; 642 } 643 return 1; 644 } 645 646 int delegpt_add_addr_mlc(struct delegpt* dp, struct sockaddr_storage* addr, 647 socklen_t addrlen, uint8_t bogus, uint8_t lame, char* tls_auth_name, 648 int port) 649 { 650 struct delegpt_addr* a; 651 log_assert(dp->dp_type_mlc); 652 if(port != -1) { 653 log_assert(port>0); 654 sockaddr_store_port(addr, addrlen, port); 655 } 656 /* check for duplicates */ 657 if((a = delegpt_find_addr(dp, addr, addrlen))) { 658 if(bogus) 659 a->bogus = bogus; 660 if(!lame) 661 a->lame = 0; 662 return 1; 663 } 664 665 a = (struct delegpt_addr*)malloc(sizeof(struct delegpt_addr)); 666 if(!a) 667 return 0; 668 a->next_target = dp->target_list; 669 dp->target_list = a; 670 a->next_result = 0; 671 a->next_usable = dp->usable_list; 672 dp->usable_list = a; 673 memcpy(&a->addr, addr, addrlen); 674 a->addrlen = addrlen; 675 a->attempts = 0; 676 a->bogus = bogus; 677 a->lame = lame; 678 a->dnsseclame = 0; 679 if(tls_auth_name) { 680 a->tls_auth_name = strdup(tls_auth_name); 681 if(!a->tls_auth_name) { 682 free(a); 683 return 0; 684 } 685 } else { 686 a->tls_auth_name = NULL; 687 } 688 return 1; 689 } 690 691 int delegpt_add_target_mlc(struct delegpt* dp, uint8_t* name, size_t namelen, 692 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t bogus, 693 uint8_t lame) 694 { 695 struct delegpt_ns* ns = delegpt_find_ns(dp, name, namelen); 696 log_assert(dp->dp_type_mlc); 697 if(!ns) { 698 /* ignore it */ 699 return 1; 700 } 701 if(!lame) { 702 if(addr_is_ip6(addr, addrlen)) 703 ns->got6 = 1; 704 else ns->got4 = 1; 705 if(ns->got4 && ns->got6) 706 ns->resolved = 1; 707 } else { 708 if(addr_is_ip6(addr, addrlen)) 709 ns->done_pside6 = 1; 710 else ns->done_pside4 = 1; 711 } 712 log_assert(ns->port>0); 713 return delegpt_add_addr_mlc(dp, addr, addrlen, bogus, lame, 714 ns->tls_auth_name, ns->port); 715 } 716 717 size_t delegpt_get_mem(struct delegpt* dp) 718 { 719 struct delegpt_ns* ns; 720 size_t s; 721 if(!dp) return 0; 722 s = sizeof(*dp) + dp->namelen + 723 delegpt_count_targets(dp)*sizeof(struct delegpt_addr); 724 for(ns=dp->nslist; ns; ns=ns->next) 725 s += sizeof(*ns)+ns->namelen; 726 return s; 727 } 728