contrib/bind9/bin/named/config.c

   1 /*
   2  * Copyright (C) 2004-2012  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2001-2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: config.c,v 1.113.16.2 2011/02/28 01:19:58 tbox Exp $ */
  19
  20 /*! \file */
  21
  22 #include <config.h>
  23
  24 #include <stdlib.h>
  25
  26 #include <isc/buffer.h>
  27 #include <isc/log.h>
  28 #include <isc/mem.h>
  29 #include <isc/parseint.h>
  30 #include <isc/region.h>
  31 #include <isc/result.h>
  32 #include <isc/sockaddr.h>
  33 #include <isc/string.h>
  34 #include <isc/util.h>
  35
  36 #include <isccfg/namedconf.h>
  37
  38 #include <dns/fixedname.h>
  39 #include <dns/name.h>
  40 #include <dns/rdataclass.h>
  41 #include <dns/rdatatype.h>
  42 #include <dns/tsig.h>
  43 #include <dns/zone.h>
  44
  45 #include <dst/dst.h>
  46
  47 #include <named/config.h>
  48 #include <named/globals.h>
  49
  50 #include "bind.keys.h"
  51
  52 /*% default configuration */
  53 static char defaultconf[] = "\
  54 options {\n\
  55 #       blackhole {none;};\n"
  56 #ifndef WIN32
  57 "       coresize default;\n\
  58         datasize default;\n\
  59         files unlimited;\n\
  60         stacksize default;\n"
  61 #endif
  62 "#      session-keyfile \"" NS_LOCALSTATEDIR "/run/named/session.key\";\n\
  63         session-keyname local-ddns;\n\
  64         session-keyalg hmac-sha256;\n\
  65         deallocate-on-exit true;\n\
  66 #       directory <none>\n\
  67         dump-file \"named_dump.db\";\n\
  68         fake-iquery no;\n\
  69         has-old-clients false;\n\
  70         heartbeat-interval 60;\n\
  71         host-statistics no;\n\
  72         interface-interval 60;\n\
  73         listen-on {any;};\n\
  74         listen-on-v6 {none;};\n\
  75         match-mapped-addresses no;\n\
  76         memstatistics-file \"named.memstats\";\n\
  77         multiple-cnames no;\n\
  78 #       named-xfer <obsolete>;\n\
  79 #       pid-file \"" NS_LOCALSTATEDIR "/run/named/named.pid\"; /* or /lwresd.pid */\n\
  80         bindkeys-file \"" NS_SYSCONFDIR "/bind.keys\";\n\
  81         port 53;\n\
  82         recursing-file \"named.recursing\";\n\
  83         secroots-file \"named.secroots\";\n\
  84 "
  85 #ifdef PATH_RANDOMDEV
  86 "\
  87         random-device \"" PATH_RANDOMDEV "\";\n\
  88 "
  89 #endif
  90 "\
  91         recursive-clients 1000;\n\
  92         resolver-query-timeout 10;\n\
  93         rrset-order {type NS order random; order cyclic; };\n\
  94         serial-queries 20;\n\
  95         serial-query-rate 20;\n\
  96         server-id none;\n\
  97         statistics-file \"named.stats\";\n\
  98         statistics-interval 60;\n\
  99         tcp-clients 100;\n\
 100         tcp-listen-queue 3;\n\
 101 #       tkey-dhkey <none>\n\
 102 #       tkey-gssapi-credential <none>\n\
 103 #       tkey-domain <none>\n\
 104         transfers-per-ns 2;\n\
 105         transfers-in 10;\n\
 106         transfers-out 10;\n\
 107         treat-cr-as-space true;\n\
 108         use-id-pool true;\n\
 109         use-ixfr true;\n\
 110         edns-udp-size 4096;\n\
 111         max-udp-size 4096;\n\
 112         request-nsid false;\n\
 113         reserved-sockets 512;\n\
 114 \n\
 115         /* DLV */\n\
 116         dnssec-lookaside . trust-anchor dlv.isc.org;\n\
 117 \n\
 118         /* view */\n\
 119         allow-notify {none;};\n\
 120         allow-update-forwarding {none;};\n\
 121         allow-query-cache { localnets; localhost; };\n\
 122         allow-query-cache-on { any; };\n\
 123         allow-recursion { localnets; localhost; };\n\
 124         allow-recursion-on { any; };\n\
 125 #       allow-v6-synthesis <obsolete>;\n\
 126 #       sortlist <none>\n\
 127 #       topology <none>\n\
 128         auth-nxdomain false;\n\
 129         minimal-responses false;\n\
 130         recursion true;\n\
 131         provide-ixfr true;\n\
 132         request-ixfr true;\n\
 133         fetch-glue no;\n\
 134         rfc2308-type1 no;\n\
 135         additional-from-auth true;\n\
 136         additional-from-cache true;\n\
 137         query-source address *;\n\
 138         query-source-v6 address *;\n\
 139         notify-source *;\n\
 140         notify-source-v6 *;\n\
 141         cleaning-interval 0;  /* now meaningless */\n\
 142         min-roots 2;\n\
 143         lame-ttl 600;\n\
 144         max-ncache-ttl 10800; /* 3 hours */\n\
 145         max-cache-ttl 604800; /* 1 week */\n\
 146         transfer-format many-answers;\n\
 147         max-cache-size 0;\n\
 148         check-names master fail;\n\
 149         check-names slave warn;\n\
 150         check-names response ignore;\n\
 151         check-dup-records warn;\n\
 152         check-mx warn;\n\
 153         acache-enable no;\n\
 154         acache-cleaning-interval 60;\n\
 155         max-acache-size 16M;\n\
 156         dnssec-enable yes;\n\
 157         dnssec-validation yes; \n\
 158         dnssec-accept-expired no;\n\
 159         clients-per-query 10;\n\
 160         max-clients-per-query 100;\n\
 161         zero-no-soa-ttl-cache no;\n\
 162         nsec3-test-zone no;\n\
 163         allow-new-zones no;\n\
 164 "
 165 #ifdef ALLOW_FILTER_AAAA_ON_V4
 166 "       filter-aaaa-on-v4 no;\n\
 167         filter-aaaa { any; };\n\
 168 "
 169 #endif
 170
 171 "       /* zone */\n\
 172         allow-query {any;};\n\
 173         allow-query-on {any;};\n\
 174         allow-transfer {any;};\n\
 175         notify yes;\n\
 176 #       also-notify <none>\n\
 177         notify-delay 5;\n\
 178         notify-to-soa no;\n\
 179         dialup no;\n\
 180 #       forward <none>\n\
 181 #       forwarders <none>\n\
 182         maintain-ixfr-base no;\n\
 183 #       max-ixfr-log-size <obsolete>\n\
 184         transfer-source *;\n\
 185         transfer-source-v6 *;\n\
 186         alt-transfer-source *;\n\
 187         alt-transfer-source-v6 *;\n\
 188         max-transfer-time-in 120;\n\
 189         max-transfer-time-out 120;\n\
 190         max-transfer-idle-in 60;\n\
 191         max-transfer-idle-out 60;\n\
 192         max-retry-time 1209600; /* 2 weeks */\n\
 193         min-retry-time 500;\n\
 194         max-refresh-time 2419200; /* 4 weeks */\n\
 195         min-refresh-time 300;\n\
 196         multi-master no;\n\
 197         dnssec-secure-to-insecure no;\n\
 198         sig-validity-interval 30; /* days */\n\
 199         sig-signing-nodes 100;\n\
 200         sig-signing-signatures 10;\n\
 201         sig-signing-type 65534;\n\
 202         zone-statistics false;\n\
 203         max-journal-size unlimited;\n\
 204         ixfr-from-differences false;\n\
 205         check-wildcard yes;\n\
 206         check-sibling yes;\n\
 207         check-integrity yes;\n\
 208         check-mx-cname warn;\n\
 209         check-srv-cname warn;\n\
 210         zero-no-soa-ttl yes;\n\
 211         update-check-ksk yes;\n\
 212         dnssec-dnskey-kskonly no;\n\
 213         try-tcp-refresh yes; /* BIND 8 compat */\n\
 214 };\n\
 215 "
 216
 217 "#\n\
 218 #  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
 219 #\n\
 220 view \"_bind\" chaos {\n\
 221         recursion no;\n\
 222         notify no;\n\
 223         allow-new-zones no;\n\
 224 \n\
 225         zone \"version.bind\" chaos {\n\
 226                 type master;\n\
 227                 database \"_builtin version\";\n\
 228         };\n\
 229 \n\
 230         zone \"hostname.bind\" chaos {\n\
 231                 type master;\n\
 232                 database \"_builtin hostname\";\n\
 233         };\n\
 234 \n\
 235         zone \"authors.bind\" chaos {\n\
 236                 type master;\n\
 237                 database \"_builtin authors\";\n\
 238         };\n\
 239 \n\
 240         zone \"id.server\" chaos {\n\
 241                 type master;\n\
 242                 database \"_builtin id\";\n\
 243         };\n\
 244 };\n\
 245 "
 246 "#\n\
 247 #  Default trusted key(s) for builtin DLV support\n\
 248 #  (used if \"dnssec-lookaside auto;\" is set and\n\
 249 #  sysconfdir/bind.keys doesn't exist).\n\
 250 #\n\
 251 # BEGIN MANAGED KEYS\n"
 252
 253 /* Imported from bind.keys.h: */
 254 MANAGED_KEYS
 255
 256 "# END MANAGED KEYS\n\
 257 ";
 258
 259 isc_result_t
 260 ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
 261         isc_buffer_t b;
 262
 263         isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
 264         isc_buffer_add(&b, sizeof(defaultconf) - 1);
 265         return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
 266 }
 267
 268 isc_result_t
 269 ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
 270         int i;
 271
 272         for (i = 0;; i++) {
 273                 if (maps[i] == NULL)
 274                         return (ISC_R_NOTFOUND);
 275                 if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
 276                         return (ISC_R_SUCCESS);
 277         }
 278 }
 279
 280 isc_result_t
 281 ns_checknames_get(const cfg_obj_t **maps, const char *which,
 282                   const cfg_obj_t **obj)
 283 {
 284         const cfg_listelt_t *element;
 285         const cfg_obj_t *checknames;
 286         const cfg_obj_t *type;
 287         const cfg_obj_t *value;
 288         int i;
 289
 290         for (i = 0;; i++) {
 291                 if (maps[i] == NULL)
 292                         return (ISC_R_NOTFOUND);
 293                 checknames = NULL;
 294                 if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
 295                         /*
 296                          * Zone map entry is not a list.
 297                          */
 298                         if (checknames != NULL && !cfg_obj_islist(checknames)) {
 299                                 *obj = checknames;
 300                                 return (ISC_R_SUCCESS);
 301                         }
 302                         for (element = cfg_list_first(checknames);
 303                              element != NULL;
 304                              element = cfg_list_next(element)) {
 305                                 value = cfg_listelt_value(element);
 306                                 type = cfg_tuple_get(value, "type");
 307                                 if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
 308                                         *obj = cfg_tuple_get(value, "mode");
 309                                         return (ISC_R_SUCCESS);
 310                                 }
 311                         }
 312
 313                 }
 314         }
 315 }
 316
 317 int
 318 ns_config_listcount(const cfg_obj_t *list) {
 319         const cfg_listelt_t *e;
 320         int i = 0;
 321
 322         for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
 323                 i++;
 324
 325         return (i);
 326 }
 327
 328 isc_result_t
 329 ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
 330                    dns_rdataclass_t *classp) {
 331         isc_textregion_t r;
 332         isc_result_t result;
 333
 334         if (!cfg_obj_isstring(classobj)) {
 335                 *classp = defclass;
 336                 return (ISC_R_SUCCESS);
 337         }
 338         DE_CONST(cfg_obj_asstring(classobj), r.base);
 339         r.length = strlen(r.base);
 340         result = dns_rdataclass_fromtext(classp, &r);
 341         if (result != ISC_R_SUCCESS)
 342                 cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
 343                             "unknown class '%s'", r.base);
 344         return (result);
 345 }
 346
 347 isc_result_t
 348 ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
 349                    dns_rdatatype_t *typep) {
 350         isc_textregion_t r;
 351         isc_result_t result;
 352
 353         if (!cfg_obj_isstring(typeobj)) {
 354                 *typep = deftype;
 355                 return (ISC_R_SUCCESS);
 356         }
 357         DE_CONST(cfg_obj_asstring(typeobj), r.base);
 358         r.length = strlen(r.base);
 359         result = dns_rdatatype_fromtext(typep, &r);
 360         if (result != ISC_R_SUCCESS)
 361                 cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
 362                             "unknown type '%s'", r.base);
 363         return (result);
 364 }
 365
 366 dns_zonetype_t
 367 ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
 368         dns_zonetype_t ztype = dns_zone_none;
 369         const char *str;
 370
 371         str = cfg_obj_asstring(zonetypeobj);
 372         if (strcasecmp(str, "master") == 0)
 373                 ztype = dns_zone_master;
 374         else if (strcasecmp(str, "slave") == 0)
 375                 ztype = dns_zone_slave;
 376         else if (strcasecmp(str, "stub") == 0)
 377                 ztype = dns_zone_stub;
 378         else if (strcasecmp(str, "static-stub") == 0)
 379                 ztype = dns_zone_staticstub;
 380         else
 381                 INSIST(0);
 382         return (ztype);
 383 }
 384
 385 isc_result_t
 386 ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
 387                     in_port_t defport, isc_mem_t *mctx,
 388                     isc_sockaddr_t **addrsp, isc_uint32_t *countp)
 389 {
 390         int count, i = 0;
 391         const cfg_obj_t *addrlist;
 392         const cfg_obj_t *portobj;
 393         const cfg_listelt_t *element;
 394         isc_sockaddr_t *addrs;
 395         in_port_t port;
 396         isc_result_t result;
 397
 398         INSIST(addrsp != NULL && *addrsp == NULL);
 399         INSIST(countp != NULL);
 400
 401         addrlist = cfg_tuple_get(list, "addresses");
 402         count = ns_config_listcount(addrlist);
 403
 404         portobj = cfg_tuple_get(list, "port");
 405         if (cfg_obj_isuint32(portobj)) {
 406                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 407                 if (val > ISC_UINT16_MAX) {
 408                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 409                                     "port '%u' out of range", val);
 410                         return (ISC_R_RANGE);
 411                 }
 412                 port = (in_port_t) val;
 413         } else if (defport != 0)
 414                 port = defport;
 415         else {
 416                 result = ns_config_getport(config, &port);
 417                 if (result != ISC_R_SUCCESS)
 418                         return (result);
 419         }
 420
 421         addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
 422         if (addrs == NULL)
 423                 return (ISC_R_NOMEMORY);
 424
 425         for (element = cfg_list_first(addrlist);
 426              element != NULL;
 427              element = cfg_list_next(element), i++)
 428         {
 429                 INSIST(i < count);
 430                 addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
 431                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 432                         isc_sockaddr_setport(&addrs[i], port);
 433         }
 434         INSIST(i == count);
 435
 436         *addrsp = addrs;
 437         *countp = count;
 438
 439         return (ISC_R_SUCCESS);
 440 }
 441
 442 void
 443 ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 444                     isc_uint32_t count)
 445 {
 446         INSIST(addrsp != NULL && *addrsp != NULL);
 447
 448         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 449         *addrsp = NULL;
 450 }
 451
 452 static isc_result_t
 453 get_masters_def(const cfg_obj_t *cctx, const char *name,
 454                 const cfg_obj_t **ret)
 455 {
 456         isc_result_t result;
 457         const cfg_obj_t *masters = NULL;
 458         const cfg_listelt_t *elt;
 459
 460         result = cfg_map_get(cctx, "masters", &masters);
 461         if (result != ISC_R_SUCCESS)
 462                 return (result);
 463         for (elt = cfg_list_first(masters);
 464              elt != NULL;
 465              elt = cfg_list_next(elt)) {
 466                 const cfg_obj_t *list;
 467                 const char *listname;
 468
 469                 list = cfg_listelt_value(elt);
 470                 listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
 471
 472                 if (strcasecmp(listname, name) == 0) {
 473                         *ret = list;
 474                         return (ISC_R_SUCCESS);
 475                 }
 476         }
 477         return (ISC_R_NOTFOUND);
 478 }
 479
 480 isc_result_t
 481 ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
 482                           isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 483                           dns_name_t ***keysp, isc_uint32_t *countp)
 484 {
 485         isc_uint32_t addrcount = 0, keycount = 0, i = 0;
 486         isc_uint32_t listcount = 0, l = 0, j;
 487         isc_uint32_t stackcount = 0, pushed = 0;
 488         isc_result_t result;
 489         const cfg_listelt_t *element;
 490         const cfg_obj_t *addrlist;
 491         const cfg_obj_t *portobj;
 492         in_port_t port;
 493         dns_fixedname_t fname;
 494         isc_sockaddr_t *addrs = NULL;
 495         dns_name_t **keys = NULL;
 496         struct { const char *name; } *lists = NULL;
 497         struct {
 498                 const cfg_listelt_t *element;
 499                 in_port_t port;
 500         } *stack = NULL;
 501
 502         REQUIRE(addrsp != NULL && *addrsp == NULL);
 503         REQUIRE(keysp != NULL && *keysp == NULL);
 504         REQUIRE(countp != NULL);
 505
 506  newlist:
 507         addrlist = cfg_tuple_get(list, "addresses");
 508         portobj = cfg_tuple_get(list, "port");
 509         if (cfg_obj_isuint32(portobj)) {
 510                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 511                 if (val > ISC_UINT16_MAX) {
 512                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 513                                     "port '%u' out of range", val);
 514                         result = ISC_R_RANGE;
 515                         goto cleanup;
 516                 }
 517                 port = (in_port_t) val;
 518         } else {
 519                 result = ns_config_getport(config, &port);
 520                 if (result != ISC_R_SUCCESS)
 521                         goto cleanup;
 522         }
 523
 524         result = ISC_R_NOMEMORY;
 525
 526         element = cfg_list_first(addrlist);
 527  resume:
 528         for ( ;
 529              element != NULL;
 530              element = cfg_list_next(element))
 531         {
 532                 const cfg_obj_t *addr;
 533                 const cfg_obj_t *key;
 534                 const char *keystr;
 535                 isc_buffer_t b;
 536
 537                 addr = cfg_tuple_get(cfg_listelt_value(element),
 538                                      "masterselement");
 539                 key = cfg_tuple_get(cfg_listelt_value(element), "key");
 540
 541                 if (!cfg_obj_issockaddr(addr)) {
 542                         const char *listname = cfg_obj_asstring(addr);
 543                         isc_result_t tresult;
 544
 545                         /* Grow lists? */
 546                         if (listcount == l) {
 547                                 void * new;
 548                                 isc_uint32_t newlen = listcount + 16;
 549                                 size_t newsize, oldsize;
 550
 551                                 newsize = newlen * sizeof(*lists);
 552                                 oldsize = listcount * sizeof(*lists);
 553                                 new = isc_mem_get(mctx, newsize);
 554                                 if (new == NULL)
 555                                         goto cleanup;
 556                                 if (listcount != 0) {
 557                                         memcpy(new, lists, oldsize);
 558                                         isc_mem_put(mctx, lists, oldsize);
 559                                 }
 560                                 lists = new;
 561                                 listcount = newlen;
 562                         }
 563                         /* Seen? */
 564                         for (j = 0; j < l; j++)
 565                                 if (strcasecmp(lists[j].name, listname) == 0)
 566                                         break;
 567                         if (j < l)
 568                                 continue;
 569                         tresult = get_masters_def(config, listname, &list);
 570                         if (tresult == ISC_R_NOTFOUND) {
 571                                 cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
 572                                     "masters \"%s\" not found", listname);
 573
 574                                 result = tresult;
 575                                 goto cleanup;
 576                         }
 577                         if (tresult != ISC_R_SUCCESS)
 578                                 goto cleanup;
 579                         lists[l++].name = listname;
 580                         /* Grow stack? */
 581                         if (stackcount == pushed) {
 582                                 void * new;
 583                                 isc_uint32_t newlen = stackcount + 16;
 584                                 size_t newsize, oldsize;
 585
 586                                 newsize = newlen * sizeof(*stack);
 587                                 oldsize = stackcount * sizeof(*stack);
 588                                 new = isc_mem_get(mctx, newsize);
 589                                 if (new == NULL)
 590                                         goto cleanup;
 591                                 if (stackcount != 0) {
 592                                         memcpy(new, stack, oldsize);
 593                                         isc_mem_put(mctx, stack, oldsize);
 594                                 }
 595                                 stack = new;
 596                                 stackcount = newlen;
 597                         }
 598                         /*
 599                          * We want to resume processing this list on the
 600                          * next element.
 601                          */
 602                         stack[pushed].element = cfg_list_next(element);
 603                         stack[pushed].port = port;
 604                         pushed++;
 605                         goto newlist;
 606                 }
 607
 608                 if (i == addrcount) {
 609                         void * new;
 610                         isc_uint32_t newlen = addrcount + 16;
 611                         size_t newsize, oldsize;
 612
 613                         newsize = newlen * sizeof(isc_sockaddr_t);
 614                         oldsize = addrcount * sizeof(isc_sockaddr_t);
 615                         new = isc_mem_get(mctx, newsize);
 616                         if (new == NULL)
 617                                 goto cleanup;
 618                         if (addrcount != 0) {
 619                                 memcpy(new, addrs, oldsize);
 620                                 isc_mem_put(mctx, addrs, oldsize);
 621                         }
 622                         addrs = new;
 623                         addrcount = newlen;
 624
 625                         newsize = newlen * sizeof(dns_name_t *);
 626                         oldsize = keycount * sizeof(dns_name_t *);
 627                         new = isc_mem_get(mctx, newsize);
 628                         if (new == NULL)
 629                                 goto cleanup;
 630                         if (keycount != 0) {
 631                                 memcpy(new, keys, oldsize);
 632                                 isc_mem_put(mctx, keys, oldsize);
 633                         }
 634                         keys = new;
 635                         keycount = newlen;
 636                 }
 637
 638                 addrs[i] = *cfg_obj_assockaddr(addr);
 639                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 640                         isc_sockaddr_setport(&addrs[i], port);
 641                 keys[i] = NULL;
 642                 if (!cfg_obj_isstring(key)) {
 643                         i++;
 644                         continue;
 645                 }
 646                 keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
 647                 if (keys[i] == NULL)
 648                         goto cleanup;
 649                 dns_name_init(keys[i], NULL);
 650
 651                 keystr = cfg_obj_asstring(key);
 652                 isc_buffer_init(&b, keystr, strlen(keystr));
 653                 isc_buffer_add(&b, strlen(keystr));
 654                 dns_fixedname_init(&fname);
 655                 result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
 656                                            dns_rootname, 0, NULL);
 657                 if (result != ISC_R_SUCCESS)
 658                         goto cleanup;
 659                 result = dns_name_dup(dns_fixedname_name(&fname), mctx,
 660                                       keys[i]);
 661                 if (result != ISC_R_SUCCESS)
 662                         goto cleanup;
 663                 i++;
 664         }
 665         if (pushed != 0) {
 666                 pushed--;
 667                 element = stack[pushed].element;
 668                 port = stack[pushed].port;
 669                 goto resume;
 670         }
 671         if (i < addrcount) {
 672                 void * new;
 673                 size_t newsize, oldsize;
 674
 675                 newsize = i * sizeof(isc_sockaddr_t);
 676                 oldsize = addrcount * sizeof(isc_sockaddr_t);
 677                 if (i != 0) {
 678                         new = isc_mem_get(mctx, newsize);
 679                         if (new == NULL)
 680                                 goto cleanup;
 681                         memcpy(new, addrs, newsize);
 682                 } else
 683                         new = NULL;
 684                 isc_mem_put(mctx, addrs, oldsize);
 685                 addrs = new;
 686                 addrcount = i;
 687
 688                 newsize = i * sizeof(dns_name_t *);
 689                 oldsize = keycount * sizeof(dns_name_t *);
 690                 if (i != 0) {
 691                         new = isc_mem_get(mctx, newsize);
 692                         if (new == NULL)
 693                                 goto cleanup;
 694                         memcpy(new, keys,  newsize);
 695                 } else
 696                         new = NULL;
 697                 isc_mem_put(mctx, keys, oldsize);
 698                 keys = new;
 699                 keycount = i;
 700         }
 701
 702         if (lists != NULL)
 703                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 704         if (stack != NULL)
 705                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 706
 707         INSIST(keycount == addrcount);
 708
 709         *addrsp = addrs;
 710         *keysp = keys;
 711         *countp = addrcount;
 712
 713         return (ISC_R_SUCCESS);
 714
 715  cleanup:
 716         if (addrs != NULL)
 717                 isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
 718         if (keys != NULL) {
 719                 for (j = 0; j <= i; j++) {
 720                         if (keys[j] == NULL)
 721                                 continue;
 722                         if (dns_name_dynamic(keys[j]))
 723                                 dns_name_free(keys[j], mctx);
 724                         isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
 725                 }
 726                 isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
 727         }
 728         if (lists != NULL)
 729                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 730         if (stack != NULL)
 731                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 732         return (result);
 733 }
 734
 735 void
 736 ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 737                           dns_name_t ***keysp, isc_uint32_t count)
 738 {
 739         unsigned int i;
 740         dns_name_t **keys = *keysp;
 741
 742         INSIST(addrsp != NULL && *addrsp != NULL);
 743
 744         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 745         for (i = 0; i < count; i++) {
 746                 if (keys[i] == NULL)
 747                         continue;
 748                 if (dns_name_dynamic(keys[i]))
 749                         dns_name_free(keys[i], mctx);
 750                 isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
 751         }
 752         isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
 753         *addrsp = NULL;
 754         *keysp = NULL;
 755 }
 756
 757 isc_result_t
 758 ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
 759         const cfg_obj_t *maps[3];
 760         const cfg_obj_t *options = NULL;
 761         const cfg_obj_t *portobj = NULL;
 762         isc_result_t result;
 763         int i;
 764
 765         (void)cfg_map_get(config, "options", &options);
 766         i = 0;
 767         if (options != NULL)
 768                 maps[i++] = options;
 769         maps[i++] = ns_g_defaults;
 770         maps[i] = NULL;
 771
 772         result = ns_config_get(maps, "port", &portobj);
 773         INSIST(result == ISC_R_SUCCESS);
 774         if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
 775                 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 776                             "port '%u' out of range",
 777                             cfg_obj_asuint32(portobj));
 778                 return (ISC_R_RANGE);
 779         }
 780         *portp = (in_port_t)cfg_obj_asuint32(portobj);
 781         return (ISC_R_SUCCESS);
 782 }
 783
 784 struct keyalgorithms {
 785         const char *str;
 786         enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
 787                hmacsha256, hmacsha384, hmacsha512 } hmac;
 788         unsigned int type;
 789         isc_uint16_t size;
 790 } algorithms[] = {
 791         { "hmac-md5", hmacmd5, DST_ALG_HMACMD5, 128 },
 792         { "hmac-md5.sig-alg.reg.int", hmacmd5, DST_ALG_HMACMD5, 0 },
 793         { "hmac-md5.sig-alg.reg.int.", hmacmd5, DST_ALG_HMACMD5, 0 },
 794         { "hmac-sha1", hmacsha1, DST_ALG_HMACSHA1, 160 },
 795         { "hmac-sha224", hmacsha224, DST_ALG_HMACSHA224, 224 },
 796         { "hmac-sha256", hmacsha256, DST_ALG_HMACSHA256, 256 },
 797         { "hmac-sha384", hmacsha384, DST_ALG_HMACSHA384, 384 },
 798         { "hmac-sha512", hmacsha512, DST_ALG_HMACSHA512, 512 },
 799         {  NULL, hmacnone, DST_ALG_UNKNOWN, 0 }
 800 };
 801
 802 isc_result_t
 803 ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
 804                           isc_uint16_t *digestbits)
 805 {
 806         return (ns_config_getkeyalgorithm2(str, name, NULL, digestbits));
 807 }
 808
 809 isc_result_t
 810 ns_config_getkeyalgorithm2(const char *str, dns_name_t **name,
 811                            unsigned int *typep, isc_uint16_t *digestbits)
 812 {
 813         int i;
 814         size_t len = 0;
 815         isc_uint16_t bits;
 816         isc_result_t result;
 817
 818         for (i = 0; algorithms[i].str != NULL; i++) {
 819                 len = strlen(algorithms[i].str);
 820                 if (strncasecmp(algorithms[i].str, str, len) == 0 &&
 821                     (str[len] == '\0' ||
 822                      (algorithms[i].size != 0 && str[len] == '-')))
 823                         break;
 824         }
 825         if (algorithms[i].str == NULL)
 826                 return (ISC_R_NOTFOUND);
 827         if (str[len] == '-') {
 828                 result = isc_parse_uint16(&bits, str + len + 1, 10);
 829                 if (result != ISC_R_SUCCESS)
 830                         return (result);
 831                 if (bits > algorithms[i].size)
 832                         return (ISC_R_RANGE);
 833         } else if (algorithms[i].size == 0)
 834                 bits = 128;
 835         else
 836                 bits = algorithms[i].size;
 837
 838         if (name != NULL) {
 839                 switch (algorithms[i].hmac) {
 840                 case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
 841                 case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
 842                 case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
 843                 case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
 844                 case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
 845                 case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
 846                 default:
 847                         INSIST(0);
 848                 }
 849         }
 850         if (typep != NULL)
 851                 *typep = algorithms[i].type;
 852         if (digestbits != NULL)
 853                 *digestbits = bits;
 854         return (ISC_R_SUCCESS);
 855 }