external/bsd/bind/dist/bin/named/config.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2004-2009  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 2001-2003  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: config.c,v 1.106 2009/12/04 21:09:32 marka Exp */
  21
  22 /*! \file */
  23
  24 #include <config.h>
  25
  26 #include <stdlib.h>
  27
  28 #include <isc/buffer.h>
  29 #include <isc/log.h>
  30 #include <isc/mem.h>
  31 #include <isc/parseint.h>
  32 #include <isc/region.h>
  33 #include <isc/result.h>
  34 #include <isc/sockaddr.h>
  35 #include <isc/string.h>
  36 #include <isc/util.h>
  37
  38 #include <isccfg/namedconf.h>
  39
  40 #include <dns/fixedname.h>
  41 #include <dns/name.h>
  42 #include <dns/rdataclass.h>
  43 #include <dns/rdatatype.h>
  44 #include <dns/tsig.h>
  45 #include <dns/zone.h>
  46
  47 #include <dst/dst.h>
  48
  49 #include <named/config.h>
  50 #include <named/globals.h>
  51
  52 #include "bind.keys.h"
  53
  54 /*% default configuration */
  55 static char defaultconf[] = "\
  56 options {\n\
  57 #       blackhole {none;};\n"
  58 #ifndef WIN32
  59 "       coresize default;\n\
  60         datasize default;\n\
  61         files unlimited;\n\
  62         stacksize default;\n"
  63 #endif
  64 "#      session-keyfile \"" NS_LOCALSTATEDIR "/run/named/session.key\";\n\
  65         session-keyname local-ddns;\n\
  66         session-keyalg hmac-sha256;\n\
  67         deallocate-on-exit true;\n\
  68 #       directory <none>\n\
  69         dump-file \"named_dump.db\";\n\
  70         fake-iquery no;\n\
  71         has-old-clients false;\n\
  72         heartbeat-interval 60;\n\
  73         host-statistics no;\n\
  74         interface-interval 60;\n\
  75         listen-on {any;};\n\
  76         listen-on-v6 {none;};\n\
  77         match-mapped-addresses no;\n\
  78         memstatistics-file \"named.memstats\";\n\
  79         multiple-cnames no;\n\
  80 #       named-xfer <obsolete>;\n\
  81 #       pid-file \"" NS_LOCALSTATEDIR "/run/named/named.pid\"; /* or /lwresd.pid */\n\
  82         bindkeys-file \"" NS_SYSCONFDIR "/bind.keys\";\n\
  83         port 53;\n\
  84         recursing-file \"named.recursing\";\n\
  85 "
  86 #ifdef PATH_RANDOMDEV
  87 "\
  88         random-device \"" PATH_RANDOMDEV "\";\n\
  89 "
  90 #endif
  91 "\
  92         recursive-clients 1000;\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 "
 164 #ifdef ALLOW_FILTER_AAAA_ON_V4
 165 "       filter-aaaa-on-v4 no;\n\
 166 "
 167 #endif
 168
 169 "       /* zone */\n\
 170         allow-query {any;};\n\
 171         allow-query-on {any;};\n\
 172         allow-transfer {any;};\n\
 173         notify yes;\n\
 174 #       also-notify <none>\n\
 175         notify-delay 5;\n\
 176         notify-to-soa no;\n\
 177         dialup no;\n\
 178 #       forward <none>\n\
 179 #       forwarders <none>\n\
 180         maintain-ixfr-base no;\n\
 181 #       max-ixfr-log-size <obsolete>\n\
 182         transfer-source *;\n\
 183         transfer-source-v6 *;\n\
 184         alt-transfer-source *;\n\
 185         alt-transfer-source-v6 *;\n\
 186         max-transfer-time-in 120;\n\
 187         max-transfer-time-out 120;\n\
 188         max-transfer-idle-in 60;\n\
 189         max-transfer-idle-out 60;\n\
 190         max-retry-time 1209600; /* 2 weeks */\n\
 191         min-retry-time 500;\n\
 192         max-refresh-time 2419200; /* 4 weeks */\n\
 193         min-refresh-time 300;\n\
 194         multi-master no;\n\
 195         dnssec-secure-to-insecure no;\n\
 196         sig-validity-interval 30; /* days */\n\
 197         sig-signing-nodes 100;\n\
 198         sig-signing-signatures 10;\n\
 199         sig-signing-type 65534;\n\
 200         zone-statistics false;\n\
 201         max-journal-size unlimited;\n\
 202         ixfr-from-differences false;\n\
 203         check-wildcard yes;\n\
 204         check-sibling yes;\n\
 205         check-integrity yes;\n\
 206         check-mx-cname warn;\n\
 207         check-srv-cname warn;\n\
 208         zero-no-soa-ttl yes;\n\
 209         update-check-ksk yes;\n\
 210         dnssec-dnskey-kskonly no;\n\
 211         try-tcp-refresh yes; /* BIND 8 compat */\n\
 212 };\n\
 213 "
 214
 215 "#\n\
 216 #  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
 217 #\n\
 218 view \"_bind\" chaos {\n\
 219         recursion no;\n\
 220         notify no;\n\
 221 \n\
 222         zone \"version.bind\" chaos {\n\
 223                 type master;\n\
 224                 database \"_builtin version\";\n\
 225         };\n\
 226 \n\
 227         zone \"hostname.bind\" chaos {\n\
 228                 type master;\n\
 229                 database \"_builtin hostname\";\n\
 230         };\n\
 231 \n\
 232         zone \"authors.bind\" chaos {\n\
 233                 type master;\n\
 234                 database \"_builtin authors\";\n\
 235         };\n\
 236 \n\
 237         zone \"id.server\" chaos {\n\
 238                 type master;\n\
 239                 database \"_builtin id\";\n\
 240         };\n\
 241 };\n\
 242 "
 243
 244 "#\n\
 245 #  The \"_meta\" view is for zones that are used to store internal\n\
 246 #  information for named, such as managed keys.  The zones are defined\n\
 247 #  elsewhere.\n\
 248 #\n\
 249 view \"_meta\" in {\n\
 250         recursion no;\n\
 251         notify no;\n\
 252 };\n\
 253 "
 254
 255 "#\n\
 256 #  Default trusted key(s) for builtin DLV support\n\
 257 #  (used if \"dnssec-lookaside auto;\" is set and\n\
 258 #  sysconfdir/bind.keys doesn't exist).\n\
 259 #\n\
 260 # BEGIN MANAGED KEYS\n"
 261
 262 /* Imported from bind.keys.h: */
 263 MANAGED_KEYS
 264
 265 "# END MANAGED KEYS\n\
 266 ";
 267
 268 isc_result_t
 269 ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
 270         isc_buffer_t b;
 271
 272         isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
 273         isc_buffer_add(&b, sizeof(defaultconf) - 1);
 274         return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
 275 }
 276
 277 isc_result_t
 278 ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
 279         int i;
 280
 281         for (i = 0;; i++) {
 282                 if (maps[i] == NULL)
 283                         return (ISC_R_NOTFOUND);
 284                 if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
 285                         return (ISC_R_SUCCESS);
 286         }
 287 }
 288
 289 isc_result_t
 290 ns_checknames_get(const cfg_obj_t **maps, const char *which,
 291                   const cfg_obj_t **obj)
 292 {
 293         const cfg_listelt_t *element;
 294         const cfg_obj_t *checknames;
 295         const cfg_obj_t *type;
 296         const cfg_obj_t *value;
 297         int i;
 298
 299         for (i = 0;; i++) {
 300                 if (maps[i] == NULL)
 301                         return (ISC_R_NOTFOUND);
 302                 checknames = NULL;
 303                 if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
 304                         /*
 305                          * Zone map entry is not a list.
 306                          */
 307                         if (checknames != NULL && !cfg_obj_islist(checknames)) {
 308                                 *obj = checknames;
 309                                 return (ISC_R_SUCCESS);
 310                         }
 311                         for (element = cfg_list_first(checknames);
 312                              element != NULL;
 313                              element = cfg_list_next(element)) {
 314                                 value = cfg_listelt_value(element);
 315                                 type = cfg_tuple_get(value, "type");
 316                                 if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
 317                                         *obj = cfg_tuple_get(value, "mode");
 318                                         return (ISC_R_SUCCESS);
 319                                 }
 320                         }
 321
 322                 }
 323         }
 324 }
 325
 326 int
 327 ns_config_listcount(const cfg_obj_t *list) {
 328         const cfg_listelt_t *e;
 329         int i = 0;
 330
 331         for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
 332                 i++;
 333
 334         return (i);
 335 }
 336
 337 isc_result_t
 338 ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
 339                    dns_rdataclass_t *classp) {
 340         isc_textregion_t r;
 341         isc_result_t result;
 342
 343         if (!cfg_obj_isstring(classobj)) {
 344                 *classp = defclass;
 345                 return (ISC_R_SUCCESS);
 346         }
 347         DE_CONST(cfg_obj_asstring(classobj), r.base);
 348         r.length = strlen(r.base);
 349         result = dns_rdataclass_fromtext(classp, &r);
 350         if (result != ISC_R_SUCCESS)
 351                 cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
 352                             "unknown class '%s'", r.base);
 353         return (result);
 354 }
 355
 356 isc_result_t
 357 ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
 358                    dns_rdatatype_t *typep) {
 359         isc_textregion_t r;
 360         isc_result_t result;
 361
 362         if (!cfg_obj_isstring(typeobj)) {
 363                 *typep = deftype;
 364                 return (ISC_R_SUCCESS);
 365         }
 366         DE_CONST(cfg_obj_asstring(typeobj), r.base);
 367         r.length = strlen(r.base);
 368         result = dns_rdatatype_fromtext(typep, &r);
 369         if (result != ISC_R_SUCCESS)
 370                 cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
 371                             "unknown type '%s'", r.base);
 372         return (result);
 373 }
 374
 375 dns_zonetype_t
 376 ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
 377         dns_zonetype_t ztype = dns_zone_none;
 378         const char *str;
 379
 380         str = cfg_obj_asstring(zonetypeobj);
 381         if (strcasecmp(str, "master") == 0)
 382                 ztype = dns_zone_master;
 383         else if (strcasecmp(str, "slave") == 0)
 384                 ztype = dns_zone_slave;
 385         else if (strcasecmp(str, "stub") == 0)
 386                 ztype = dns_zone_stub;
 387         else
 388                 INSIST(0);
 389         return (ztype);
 390 }
 391
 392 isc_result_t
 393 ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
 394                     in_port_t defport, isc_mem_t *mctx,
 395                     isc_sockaddr_t **addrsp, isc_uint32_t *countp)
 396 {
 397         int count, i = 0;
 398         const cfg_obj_t *addrlist;
 399         const cfg_obj_t *portobj;
 400         const cfg_listelt_t *element;
 401         isc_sockaddr_t *addrs;
 402         in_port_t port;
 403         isc_result_t result;
 404
 405         INSIST(addrsp != NULL && *addrsp == NULL);
 406         INSIST(countp != NULL);
 407
 408         addrlist = cfg_tuple_get(list, "addresses");
 409         count = ns_config_listcount(addrlist);
 410
 411         portobj = cfg_tuple_get(list, "port");
 412         if (cfg_obj_isuint32(portobj)) {
 413                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 414                 if (val > ISC_UINT16_MAX) {
 415                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 416                                     "port '%u' out of range", val);
 417                         return (ISC_R_RANGE);
 418                 }
 419                 port = (in_port_t) val;
 420         } else if (defport != 0)
 421                 port = defport;
 422         else {
 423                 result = ns_config_getport(config, &port);
 424                 if (result != ISC_R_SUCCESS)
 425                         return (result);
 426         }
 427
 428         addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
 429         if (addrs == NULL)
 430                 return (ISC_R_NOMEMORY);
 431
 432         for (element = cfg_list_first(addrlist);
 433              element != NULL;
 434              element = cfg_list_next(element), i++)
 435         {
 436                 INSIST(i < count);
 437                 addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
 438                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 439                         isc_sockaddr_setport(&addrs[i], port);
 440         }
 441         INSIST(i == count);
 442
 443         *addrsp = addrs;
 444         *countp = count;
 445
 446         return (ISC_R_SUCCESS);
 447 }
 448
 449 void
 450 ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 451                     isc_uint32_t count)
 452 {
 453         INSIST(addrsp != NULL && *addrsp != NULL);
 454
 455         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 456         *addrsp = NULL;
 457 }
 458
 459 static isc_result_t
 460 get_masters_def(const cfg_obj_t *cctx, const char *name,
 461                 const cfg_obj_t **ret)
 462 {
 463         isc_result_t result;
 464         const cfg_obj_t *masters = NULL;
 465         const cfg_listelt_t *elt;
 466
 467         result = cfg_map_get(cctx, "masters", &masters);
 468         if (result != ISC_R_SUCCESS)
 469                 return (result);
 470         for (elt = cfg_list_first(masters);
 471              elt != NULL;
 472              elt = cfg_list_next(elt)) {
 473                 const cfg_obj_t *list;
 474                 const char *listname;
 475
 476                 list = cfg_listelt_value(elt);
 477                 listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
 478
 479                 if (strcasecmp(listname, name) == 0) {
 480                         *ret = list;
 481                         return (ISC_R_SUCCESS);
 482                 }
 483         }
 484         return (ISC_R_NOTFOUND);
 485 }
 486
 487 isc_result_t
 488 ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
 489                           isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 490                           dns_name_t ***keysp, isc_uint32_t *countp)
 491 {
 492         isc_uint32_t addrcount = 0, keycount = 0, i = 0;
 493         isc_uint32_t listcount = 0, l = 0, j;
 494         isc_uint32_t stackcount = 0, pushed = 0;
 495         isc_result_t result;
 496         const cfg_listelt_t *element;
 497         const cfg_obj_t *addrlist;
 498         const cfg_obj_t *portobj;
 499         in_port_t port;
 500         dns_fixedname_t fname;
 501         isc_sockaddr_t *addrs = NULL;
 502         dns_name_t **keys = NULL;
 503         struct { const char *name; } *lists = NULL;
 504         struct {
 505                 const cfg_listelt_t *element;
 506                 in_port_t port;
 507         } *stack = NULL;
 508
 509         REQUIRE(addrsp != NULL && *addrsp == NULL);
 510         REQUIRE(keysp != NULL && *keysp == NULL);
 511         REQUIRE(countp != NULL);
 512
 513  newlist:
 514         addrlist = cfg_tuple_get(list, "addresses");
 515         portobj = cfg_tuple_get(list, "port");
 516         if (cfg_obj_isuint32(portobj)) {
 517                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 518                 if (val > ISC_UINT16_MAX) {
 519                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 520                                     "port '%u' out of range", val);
 521                         result = ISC_R_RANGE;
 522                         goto cleanup;
 523                 }
 524                 port = (in_port_t) val;
 525         } else {
 526                 result = ns_config_getport(config, &port);
 527                 if (result != ISC_R_SUCCESS)
 528                         goto cleanup;
 529         }
 530
 531         result = ISC_R_NOMEMORY;
 532
 533         element = cfg_list_first(addrlist);
 534  resume:
 535         for ( ;
 536              element != NULL;
 537              element = cfg_list_next(element))
 538         {
 539                 const cfg_obj_t *addr;
 540                 const cfg_obj_t *key;
 541                 const char *keystr;
 542                 isc_buffer_t b;
 543
 544                 addr = cfg_tuple_get(cfg_listelt_value(element),
 545                                      "masterselement");
 546                 key = cfg_tuple_get(cfg_listelt_value(element), "key");
 547
 548                 if (!cfg_obj_issockaddr(addr)) {
 549                         const char *listname = cfg_obj_asstring(addr);
 550                         isc_result_t tresult;
 551
 552                         /* Grow lists? */
 553                         if (listcount == l) {
 554                                 void * new;
 555                                 isc_uint32_t newlen = listcount + 16;
 556                                 size_t newsize, oldsize;
 557
 558                                 newsize = newlen * sizeof(*lists);
 559                                 oldsize = listcount * sizeof(*lists);
 560                                 new = isc_mem_get(mctx, newsize);
 561                                 if (new == NULL)
 562                                         goto cleanup;
 563                                 if (listcount != 0) {
 564                                         memcpy(new, lists, oldsize);
 565                                         isc_mem_put(mctx, lists, oldsize);
 566                                 }
 567                                 lists = new;
 568                                 listcount = newlen;
 569                         }
 570                         /* Seen? */
 571                         for (j = 0; j < l; j++)
 572                                 if (strcasecmp(lists[j].name, listname) == 0)
 573                                         break;
 574                         if (j < l)
 575                                 continue;
 576                         tresult = get_masters_def(config, listname, &list);
 577                         if (tresult == ISC_R_NOTFOUND) {
 578                                 cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
 579                                     "masters \"%s\" not found", listname);
 580
 581                                 result = tresult;
 582                                 goto cleanup;
 583                         }
 584                         if (tresult != ISC_R_SUCCESS)
 585                                 goto cleanup;
 586                         lists[l++].name = listname;
 587                         /* Grow stack? */
 588                         if (stackcount == pushed) {
 589                                 void * new;
 590                                 isc_uint32_t newlen = stackcount + 16;
 591                                 size_t newsize, oldsize;
 592
 593                                 newsize = newlen * sizeof(*stack);
 594                                 oldsize = stackcount * sizeof(*stack);
 595                                 new = isc_mem_get(mctx, newsize);
 596                                 if (new == NULL)
 597                                         goto cleanup;
 598                                 if (stackcount != 0) {
 599                                         memcpy(new, stack, oldsize);
 600                                         isc_mem_put(mctx, stack, oldsize);
 601                                 }
 602                                 stack = new;
 603                                 stackcount = newlen;
 604                         }
 605                         /*
 606                          * We want to resume processing this list on the
 607                          * next element.
 608                          */
 609                         stack[pushed].element = cfg_list_next(element);
 610                         stack[pushed].port = port;
 611                         pushed++;
 612                         goto newlist;
 613                 }
 614
 615                 if (i == addrcount) {
 616                         void * new;
 617                         isc_uint32_t newlen = addrcount + 16;
 618                         size_t newsize, oldsize;
 619
 620                         newsize = newlen * sizeof(isc_sockaddr_t);
 621                         oldsize = addrcount * sizeof(isc_sockaddr_t);
 622                         new = isc_mem_get(mctx, newsize);
 623                         if (new == NULL)
 624                                 goto cleanup;
 625                         if (addrcount != 0) {
 626                                 memcpy(new, addrs, oldsize);
 627                                 isc_mem_put(mctx, addrs, oldsize);
 628                         }
 629                         addrs = new;
 630                         addrcount = newlen;
 631
 632                         newsize = newlen * sizeof(dns_name_t *);
 633                         oldsize = keycount * sizeof(dns_name_t *);
 634                         new = isc_mem_get(mctx, newsize);
 635                         if (new == NULL)
 636                                 goto cleanup;
 637                         if (keycount != 0) {
 638                                 memcpy(new, keys, oldsize);
 639                                 isc_mem_put(mctx, keys, oldsize);
 640                         }
 641                         keys = new;
 642                         keycount = newlen;
 643                 }
 644
 645                 addrs[i] = *cfg_obj_assockaddr(addr);
 646                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 647                         isc_sockaddr_setport(&addrs[i], port);
 648                 keys[i] = NULL;
 649                 if (!cfg_obj_isstring(key)) {
 650                         i++;
 651                         continue;
 652                 }
 653                 keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
 654                 if (keys[i] == NULL)
 655                         goto cleanup;
 656                 dns_name_init(keys[i], NULL);
 657
 658                 keystr = cfg_obj_asstring(key);
 659                 isc_buffer_init(&b, keystr, strlen(keystr));
 660                 isc_buffer_add(&b, strlen(keystr));
 661                 dns_fixedname_init(&fname);
 662                 result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
 663                                            dns_rootname, 0, NULL);
 664                 if (result != ISC_R_SUCCESS)
 665                         goto cleanup;
 666                 result = dns_name_dup(dns_fixedname_name(&fname), mctx,
 667                                       keys[i]);
 668                 if (result != ISC_R_SUCCESS)
 669                         goto cleanup;
 670                 i++;
 671         }
 672         if (pushed != 0) {
 673                 pushed--;
 674                 element = stack[pushed].element;
 675                 port = stack[pushed].port;
 676                 goto resume;
 677         }
 678         if (i < addrcount) {
 679                 void * new;
 680                 size_t newsize, oldsize;
 681
 682                 newsize = i * sizeof(isc_sockaddr_t);
 683                 oldsize = addrcount * sizeof(isc_sockaddr_t);
 684                 if (i != 0) {
 685                         new = isc_mem_get(mctx, newsize);
 686                         if (new == NULL)
 687                                 goto cleanup;
 688                         memcpy(new, addrs, newsize);
 689                 } else
 690                         new = NULL;
 691                 isc_mem_put(mctx, addrs, oldsize);
 692                 addrs = new;
 693                 addrcount = i;
 694
 695                 newsize = i * sizeof(dns_name_t *);
 696                 oldsize = keycount * sizeof(dns_name_t *);
 697                 if (i != 0) {
 698                         new = isc_mem_get(mctx, newsize);
 699                         if (new == NULL)
 700                                 goto cleanup;
 701                         memcpy(new, keys,  newsize);
 702                 } else
 703                         new = NULL;
 704                 isc_mem_put(mctx, keys, oldsize);
 705                 keys = new;
 706                 keycount = i;
 707         }
 708
 709         if (lists != NULL)
 710                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 711         if (stack != NULL)
 712                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 713
 714         INSIST(keycount == addrcount);
 715
 716         *addrsp = addrs;
 717         *keysp = keys;
 718         *countp = addrcount;
 719
 720         return (ISC_R_SUCCESS);
 721
 722  cleanup:
 723         if (addrs != NULL)
 724                 isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
 725         if (keys != NULL) {
 726                 for (j = 0; j <= i; j++) {
 727                         if (keys[j] == NULL)
 728                                 continue;
 729                         if (dns_name_dynamic(keys[j]))
 730                                 dns_name_free(keys[j], mctx);
 731                         isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
 732                 }
 733                 isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
 734         }
 735         if (lists != NULL)
 736                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 737         if (stack != NULL)
 738                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 739         return (result);
 740 }
 741
 742 void
 743 ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 744                           dns_name_t ***keysp, isc_uint32_t count)
 745 {
 746         unsigned int i;
 747         dns_name_t **keys = *keysp;
 748
 749         INSIST(addrsp != NULL && *addrsp != NULL);
 750
 751         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 752         for (i = 0; i < count; i++) {
 753                 if (keys[i] == NULL)
 754                         continue;
 755                 if (dns_name_dynamic(keys[i]))
 756                         dns_name_free(keys[i], mctx);
 757                 isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
 758         }
 759         isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
 760         *addrsp = NULL;
 761         *keysp = NULL;
 762 }
 763
 764 isc_result_t
 765 ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
 766         const cfg_obj_t *maps[3];
 767         const cfg_obj_t *options = NULL;
 768         const cfg_obj_t *portobj = NULL;
 769         isc_result_t result;
 770         int i;
 771
 772         (void)cfg_map_get(config, "options", &options);
 773         i = 0;
 774         if (options != NULL)
 775                 maps[i++] = options;
 776         maps[i++] = ns_g_defaults;
 777         maps[i] = NULL;
 778
 779         result = ns_config_get(maps, "port", &portobj);
 780         INSIST(result == ISC_R_SUCCESS);
 781         if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
 782                 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 783                             "port '%u' out of range",
 784                             cfg_obj_asuint32(portobj));
 785                 return (ISC_R_RANGE);
 786         }
 787         *portp = (in_port_t)cfg_obj_asuint32(portobj);
 788         return (ISC_R_SUCCESS);
 789 }
 790
 791 struct keyalgorithms {
 792         const char *str;
 793         enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
 794                hmacsha256, hmacsha384, hmacsha512 } hmac;
 795         unsigned int type;
 796         isc_uint16_t size;
 797 } algorithms[] = {
 798         { "hmac-md5", hmacmd5, DST_ALG_HMACMD5, 128 },
 799         { "hmac-md5.sig-alg.reg.int", hmacmd5, DST_ALG_HMACMD5, 0 },
 800         { "hmac-md5.sig-alg.reg.int.", hmacmd5, DST_ALG_HMACMD5, 0 },
 801         { "hmac-sha1", hmacsha1, DST_ALG_HMACSHA1, 160 },
 802         { "hmac-sha224", hmacsha224, DST_ALG_HMACSHA224, 224 },
 803         { "hmac-sha256", hmacsha256, DST_ALG_HMACSHA256, 256 },
 804         { "hmac-sha384", hmacsha384, DST_ALG_HMACSHA384, 384 },
 805         { "hmac-sha512", hmacsha512, DST_ALG_HMACSHA512, 512 },
 806         {  NULL, hmacnone, DST_ALG_UNKNOWN, 0 }
 807 };
 808
 809 isc_result_t
 810 ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
 811                           isc_uint16_t *digestbits)
 812 {
 813         return (ns_config_getkeyalgorithm2(str, name, NULL, digestbits));
 814 }
 815
 816 isc_result_t
 817 ns_config_getkeyalgorithm2(const char *str, dns_name_t **name,
 818                            unsigned int *typep, isc_uint16_t *digestbits)
 819 {
 820         int i;
 821         size_t len = 0;
 822         isc_uint16_t bits;
 823         isc_result_t result;
 824
 825         for (i = 0; algorithms[i].str != NULL; i++) {
 826                 len = strlen(algorithms[i].str);
 827                 if (strncasecmp(algorithms[i].str, str, len) == 0 &&
 828                     (str[len] == '\0' ||
 829                      (algorithms[i].size != 0 && str[len] == '-')))
 830                         break;
 831         }
 832         if (algorithms[i].str == NULL)
 833                 return (ISC_R_NOTFOUND);
 834         if (str[len] == '-') {
 835                 result = isc_parse_uint16(&bits, str + len + 1, 10);
 836                 if (result != ISC_R_SUCCESS)
 837                         return (result);
 838                 if (bits > algorithms[i].size)
 839                         return (ISC_R_RANGE);
 840         } else if (algorithms[i].size == 0)
 841                 bits = 128;
 842         else
 843                 bits = algorithms[i].size;
 844
 845         if (name != NULL) {
 846                 switch (algorithms[i].hmac) {
 847                 case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
 848                 case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
 849                 case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
 850                 case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
 851                 case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
 852                 case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
 853                 default:
 854                         INSIST(0);
 855                 }
 856         }
 857         if (typep != NULL)
 858                 *typep = algorithms[i].type;
 859         if (digestbits != NULL)
 860                 *digestbits = bits;
 861         return (ISC_R_SUCCESS);
 862 }