contrib/bind9/bin/named/config.c

   1 /*
   2  * Copyright (C) 2004-2008  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 1.47.18.32.10.3 2008/07/23 23:48:17 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 <named/config.h>
  46 #include <named/globals.h>
  47
  48 /*% default configuration */
  49 static char defaultconf[] = "\
  50 options {\n\
  51 #       blackhole {none;};\n"
  52 #ifndef WIN32
  53 "       coresize default;\n\
  54         datasize default;\n\
  55         files unlimited;\n\
  56         stacksize default;\n"
  57 #endif
  58 "       deallocate-on-exit true;\n\
  59 #       directory <none>\n\
  60         dump-file \"named_dump.db\";\n\
  61         fake-iquery no;\n\
  62         has-old-clients false;\n\
  63         heartbeat-interval 60;\n\
  64         host-statistics no;\n\
  65         interface-interval 60;\n\
  66         listen-on {any;};\n\
  67         listen-on-v6 {none;};\n\
  68         match-mapped-addresses no;\n\
  69         memstatistics-file \"named.memstats\";\n\
  70         multiple-cnames no;\n\
  71 #       named-xfer <obsolete>;\n\
  72 #       pid-file \"" NS_LOCALSTATEDIR "/named.pid\"; /* or /lwresd.pid */\n\
  73         port 53;\n\
  74         recursing-file \"named.recursing\";\n\
  75 "
  76 #ifdef PATH_RANDOMDEV
  77 "\
  78         random-device \"" PATH_RANDOMDEV "\";\n\
  79 "
  80 #endif
  81 "\
  82         recursive-clients 1000;\n\
  83         rrset-order {type NS order random; order cyclic; };\n\
  84         serial-queries 20;\n\
  85         serial-query-rate 20;\n\
  86         server-id none;\n\
  87         statistics-file \"named.stats\";\n\
  88         statistics-interval 60;\n\
  89         tcp-clients 100;\n\
  90         tcp-listen-queue 3;\n\
  91 #       tkey-dhkey <none>\n\
  92 #       tkey-gssapi-credential <none>\n\
  93 #       tkey-domain <none>\n\
  94         transfers-per-ns 2;\n\
  95         transfers-in 10;\n\
  96         transfers-out 10;\n\
  97         treat-cr-as-space true;\n\
  98         use-id-pool true;\n\
  99         use-ixfr true;\n\
 100         edns-udp-size 4096;\n\
 101         max-udp-size 4096;\n\
 102         reserved-sockets 512;\n\
 103 \n\
 104         /* view */\n\
 105         allow-notify {none;};\n\
 106         allow-update-forwarding {none;};\n\
 107         allow-query-cache { localnets; localhost; };\n\
 108         allow-recursion { localnets; localhost; };\n\
 109 #       allow-v6-synthesis <obsolete>;\n\
 110 #       sortlist <none>\n\
 111 #       topology <none>\n\
 112         auth-nxdomain false;\n\
 113         minimal-responses false;\n\
 114         recursion true;\n\
 115         provide-ixfr true;\n\
 116         request-ixfr true;\n\
 117         fetch-glue no;\n\
 118         rfc2308-type1 no;\n\
 119         additional-from-auth true;\n\
 120         additional-from-cache true;\n\
 121         query-source address *;\n\
 122         query-source-v6 address *;\n\
 123         notify-source *;\n\
 124         notify-source-v6 *;\n\
 125         cleaning-interval 60;\n\
 126         min-roots 2;\n\
 127         lame-ttl 600;\n\
 128         max-ncache-ttl 10800; /* 3 hours */\n\
 129         max-cache-ttl 604800; /* 1 week */\n\
 130         transfer-format many-answers;\n\
 131         max-cache-size 0;\n\
 132         check-names master fail;\n\
 133         check-names slave warn;\n\
 134         check-names response ignore;\n\
 135         check-mx warn;\n\
 136         acache-enable no;\n\
 137         acache-cleaning-interval 60;\n\
 138         max-acache-size 0;\n\
 139         dnssec-enable yes;\n\
 140         dnssec-validation no; /* Make yes for 9.5. */ \n\
 141         dnssec-accept-expired no;\n\
 142         clients-per-query 10;\n\
 143         max-clients-per-query 100;\n\
 144         zero-no-soa-ttl-cache no;\n\
 145 "
 146
 147 "       /* zone */\n\
 148         allow-query {any;};\n\
 149         allow-transfer {any;};\n\
 150         notify yes;\n\
 151 #       also-notify <none>\n\
 152         notify-delay 5;\n\
 153         dialup no;\n\
 154 #       forward <none>\n\
 155 #       forwarders <none>\n\
 156         maintain-ixfr-base no;\n\
 157 #       max-ixfr-log-size <obsolete>\n\
 158         transfer-source *;\n\
 159         transfer-source-v6 *;\n\
 160         alt-transfer-source *;\n\
 161         alt-transfer-source-v6 *;\n\
 162         max-transfer-time-in 120;\n\
 163         max-transfer-time-out 120;\n\
 164         max-transfer-idle-in 60;\n\
 165         max-transfer-idle-out 60;\n\
 166         max-retry-time 1209600; /* 2 weeks */\n\
 167         min-retry-time 500;\n\
 168         max-refresh-time 2419200; /* 4 weeks */\n\
 169         min-refresh-time 300;\n\
 170         multi-master no;\n\
 171         sig-validity-interval 30; /* days */\n\
 172         zone-statistics false;\n\
 173         max-journal-size unlimited;\n\
 174         ixfr-from-differences false;\n\
 175         check-wildcard yes;\n\
 176         check-sibling yes;\n\
 177         check-integrity yes;\n\
 178         check-mx-cname warn;\n\
 179         check-srv-cname warn;\n\
 180         zero-no-soa-ttl yes;\n\
 181         update-check-ksk yes;\n\
 182 };\n\
 183 "
 184
 185 "#\n\
 186 #  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
 187 #\n\
 188 view \"_bind\" chaos {\n\
 189         recursion no;\n\
 190         notify no;\n\
 191 \n\
 192         zone \"version.bind\" chaos {\n\
 193                 type master;\n\
 194                 database \"_builtin version\";\n\
 195         };\n\
 196 \n\
 197         zone \"hostname.bind\" chaos {\n\
 198                 type master;\n\
 199                 database \"_builtin hostname\";\n\
 200         };\n\
 201 \n\
 202         zone \"authors.bind\" chaos {\n\
 203                 type master;\n\
 204                 database \"_builtin authors\";\n\
 205         };\n\
 206         zone \"id.server\" chaos {\n\
 207                 type master;\n\
 208                 database \"_builtin id\";\n\
 209         };\n\
 210 };\n\
 211 ";
 212
 213 isc_result_t
 214 ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
 215         isc_buffer_t b;
 216
 217         isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
 218         isc_buffer_add(&b, sizeof(defaultconf) - 1);
 219         return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
 220 }
 221
 222 isc_result_t
 223 ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
 224         int i;
 225
 226         for (i = 0;; i++) {
 227                 if (maps[i] == NULL)
 228                         return (ISC_R_NOTFOUND);
 229                 if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
 230                         return (ISC_R_SUCCESS);
 231         }
 232 }
 233
 234 isc_result_t
 235 ns_checknames_get(const cfg_obj_t **maps, const char *which,
 236                   const cfg_obj_t **obj)
 237 {
 238         const cfg_listelt_t *element;
 239         const cfg_obj_t *checknames;
 240         const cfg_obj_t *type;
 241         const cfg_obj_t *value;
 242         int i;
 243
 244         for (i = 0;; i++) {
 245                 if (maps[i] == NULL)
 246                         return (ISC_R_NOTFOUND);
 247                 checknames = NULL;
 248                 if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
 249                         /*
 250                          * Zone map entry is not a list.
 251                          */
 252                         if (checknames != NULL && !cfg_obj_islist(checknames)) {
 253                                 *obj = checknames;
 254                                 return (ISC_R_SUCCESS);
 255                         }
 256                         for (element = cfg_list_first(checknames);
 257                              element != NULL;
 258                              element = cfg_list_next(element)) {
 259                                 value = cfg_listelt_value(element);
 260                                 type = cfg_tuple_get(value, "type");
 261                                 if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
 262                                         *obj = cfg_tuple_get(value, "mode");
 263                                         return (ISC_R_SUCCESS);
 264                                 }
 265                         }
 266
 267                 }
 268         }
 269 }
 270
 271 int
 272 ns_config_listcount(const cfg_obj_t *list) {
 273         const cfg_listelt_t *e;
 274         int i = 0;
 275
 276         for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
 277                 i++;
 278
 279         return (i);
 280 }
 281
 282 isc_result_t
 283 ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
 284                    dns_rdataclass_t *classp) {
 285         isc_textregion_t r;
 286         isc_result_t result;
 287
 288         if (!cfg_obj_isstring(classobj)) {
 289                 *classp = defclass;
 290                 return (ISC_R_SUCCESS);
 291         }
 292         DE_CONST(cfg_obj_asstring(classobj), r.base);
 293         r.length = strlen(r.base);
 294         result = dns_rdataclass_fromtext(classp, &r);
 295         if (result != ISC_R_SUCCESS)
 296                 cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
 297                             "unknown class '%s'", r.base);
 298         return (result);
 299 }
 300
 301 isc_result_t
 302 ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
 303                    dns_rdatatype_t *typep) {
 304         isc_textregion_t r;
 305         isc_result_t result;
 306
 307         if (!cfg_obj_isstring(typeobj)) {
 308                 *typep = deftype;
 309                 return (ISC_R_SUCCESS);
 310         }
 311         DE_CONST(cfg_obj_asstring(typeobj), r.base);
 312         r.length = strlen(r.base);
 313         result = dns_rdatatype_fromtext(typep, &r);
 314         if (result != ISC_R_SUCCESS)
 315                 cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
 316                             "unknown type '%s'", r.base);
 317         return (result);
 318 }
 319
 320 dns_zonetype_t
 321 ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
 322         dns_zonetype_t ztype = dns_zone_none;
 323         const char *str;
 324
 325         str = cfg_obj_asstring(zonetypeobj);
 326         if (strcasecmp(str, "master") == 0)
 327                 ztype = dns_zone_master;
 328         else if (strcasecmp(str, "slave") == 0)
 329                 ztype = dns_zone_slave;
 330         else if (strcasecmp(str, "stub") == 0)
 331                 ztype = dns_zone_stub;
 332         else
 333                 INSIST(0);
 334         return (ztype);
 335 }
 336
 337 isc_result_t
 338 ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
 339                     in_port_t defport, isc_mem_t *mctx,
 340                     isc_sockaddr_t **addrsp, isc_uint32_t *countp)
 341 {
 342         int count, i = 0;
 343         const cfg_obj_t *addrlist;
 344         const cfg_obj_t *portobj;
 345         const cfg_listelt_t *element;
 346         isc_sockaddr_t *addrs;
 347         in_port_t port;
 348         isc_result_t result;
 349
 350         INSIST(addrsp != NULL && *addrsp == NULL);
 351         INSIST(countp != NULL);
 352
 353         addrlist = cfg_tuple_get(list, "addresses");
 354         count = ns_config_listcount(addrlist);
 355
 356         portobj = cfg_tuple_get(list, "port");
 357         if (cfg_obj_isuint32(portobj)) {
 358                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 359                 if (val > ISC_UINT16_MAX) {
 360                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 361                                     "port '%u' out of range", val);
 362                         return (ISC_R_RANGE);
 363                 }
 364                 port = (in_port_t) val;
 365         } else if (defport != 0)
 366                 port = defport;
 367         else {
 368                 result = ns_config_getport(config, &port);
 369                 if (result != ISC_R_SUCCESS)
 370                         return (result);
 371         }
 372
 373         addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
 374         if (addrs == NULL)
 375                 return (ISC_R_NOMEMORY);
 376
 377         for (element = cfg_list_first(addrlist);
 378              element != NULL;
 379              element = cfg_list_next(element), i++)
 380         {
 381                 INSIST(i < count);
 382                 addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
 383                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 384                         isc_sockaddr_setport(&addrs[i], port);
 385         }
 386         INSIST(i == count);
 387
 388         *addrsp = addrs;
 389         *countp = count;
 390
 391         return (ISC_R_SUCCESS);
 392 }
 393
 394 void
 395 ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 396                     isc_uint32_t count)
 397 {
 398         INSIST(addrsp != NULL && *addrsp != NULL);
 399
 400         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 401         *addrsp = NULL;
 402 }
 403
 404 static isc_result_t
 405 get_masters_def(const cfg_obj_t *cctx, const char *name,
 406                 const cfg_obj_t **ret)
 407 {
 408         isc_result_t result;
 409         const cfg_obj_t *masters = NULL;
 410         const cfg_listelt_t *elt;
 411
 412         result = cfg_map_get(cctx, "masters", &masters);
 413         if (result != ISC_R_SUCCESS)
 414                 return (result);
 415         for (elt = cfg_list_first(masters);
 416              elt != NULL;
 417              elt = cfg_list_next(elt)) {
 418                 const cfg_obj_t *list;
 419                 const char *listname;
 420
 421                 list = cfg_listelt_value(elt);
 422                 listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
 423
 424                 if (strcasecmp(listname, name) == 0) {
 425                         *ret = list;
 426                         return (ISC_R_SUCCESS);
 427                 }
 428         }
 429         return (ISC_R_NOTFOUND);
 430 }
 431
 432 isc_result_t
 433 ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
 434                           isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 435                           dns_name_t ***keysp, isc_uint32_t *countp)
 436 {
 437         isc_uint32_t addrcount = 0, keycount = 0, i = 0;
 438         isc_uint32_t listcount = 0, l = 0, j;
 439         isc_uint32_t stackcount = 0, pushed = 0;
 440         isc_result_t result;
 441         const cfg_listelt_t *element;
 442         const cfg_obj_t *addrlist;
 443         const cfg_obj_t *portobj;
 444         in_port_t port;
 445         dns_fixedname_t fname;
 446         isc_sockaddr_t *addrs = NULL;
 447         dns_name_t **keys = NULL;
 448         struct { const char *name; } *lists = NULL;
 449         struct {
 450                 const cfg_listelt_t *element;
 451                 in_port_t port;
 452         } *stack = NULL;
 453
 454         REQUIRE(addrsp != NULL && *addrsp == NULL);
 455         REQUIRE(keysp != NULL && *keysp == NULL);
 456         REQUIRE(countp != NULL);
 457
 458  newlist:
 459         addrlist = cfg_tuple_get(list, "addresses");
 460         portobj = cfg_tuple_get(list, "port");
 461         if (cfg_obj_isuint32(portobj)) {
 462                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 463                 if (val > ISC_UINT16_MAX) {
 464                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 465                                     "port '%u' out of range", val);
 466                         result = ISC_R_RANGE;
 467                         goto cleanup;
 468                 }
 469                 port = (in_port_t) val;
 470         } else {
 471                 result = ns_config_getport(config, &port);
 472                 if (result != ISC_R_SUCCESS)
 473                         goto cleanup;
 474         }
 475
 476         result = ISC_R_NOMEMORY;
 477
 478         element = cfg_list_first(addrlist);
 479  resume:
 480         for ( ;
 481              element != NULL;
 482              element = cfg_list_next(element))
 483         {
 484                 const cfg_obj_t *addr;
 485                 const cfg_obj_t *key;
 486                 const char *keystr;
 487                 isc_buffer_t b;
 488
 489                 addr = cfg_tuple_get(cfg_listelt_value(element),
 490                                      "masterselement");
 491                 key = cfg_tuple_get(cfg_listelt_value(element), "key");
 492
 493                 if (!cfg_obj_issockaddr(addr)) {
 494                         const char *listname = cfg_obj_asstring(addr);
 495                         isc_result_t tresult;
 496
 497                         /* Grow lists? */
 498                         if (listcount == l) {
 499                                 void * new;
 500                                 isc_uint32_t newlen = listcount + 16;
 501                                 size_t newsize, oldsize;
 502
 503                                 newsize = newlen * sizeof(*lists);
 504                                 oldsize = listcount * sizeof(*lists);
 505                                 new = isc_mem_get(mctx, newsize);
 506                                 if (new == NULL)
 507                                         goto cleanup;
 508                                 if (listcount != 0) {
 509                                         memcpy(new, lists, oldsize);
 510                                         isc_mem_put(mctx, lists, oldsize);
 511                                 }
 512                                 lists = new;
 513                                 listcount = newlen;
 514                         }
 515                         /* Seen? */
 516                         for (j = 0; j < l; j++)
 517                                 if (strcasecmp(lists[j].name, listname) == 0)
 518                                         break;
 519                         if (j < l)
 520                                 continue;
 521                         tresult = get_masters_def(config, listname, &list);
 522                         if (tresult == ISC_R_NOTFOUND) {
 523                                 cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
 524                                     "masters \"%s\" not found", listname);
 525
 526                                 result = tresult;
 527                                 goto cleanup;
 528                         }
 529                         if (tresult != ISC_R_SUCCESS)
 530                                 goto cleanup;
 531                         lists[l++].name = listname;
 532                         /* Grow stack? */
 533                         if (stackcount == pushed) {
 534                                 void * new;
 535                                 isc_uint32_t newlen = stackcount + 16;
 536                                 size_t newsize, oldsize;
 537
 538                                 newsize = newlen * sizeof(*stack);
 539                                 oldsize = stackcount * sizeof(*stack);
 540                                 new = isc_mem_get(mctx, newsize);
 541                                 if (new == NULL)
 542                                         goto cleanup;
 543                                 if (stackcount != 0) {
 544                                         memcpy(new, stack, oldsize);
 545                                         isc_mem_put(mctx, stack, oldsize);
 546                                 }
 547                                 stack = new;
 548                                 stackcount = newlen;
 549                         }
 550                         /*
 551                          * We want to resume processing this list on the
 552                          * next element.
 553                          */
 554                         stack[pushed].element = cfg_list_next(element);
 555                         stack[pushed].port = port;
 556                         pushed++;
 557                         goto newlist;
 558                 }
 559
 560                 if (i == addrcount) {
 561                         void * new;
 562                         isc_uint32_t newlen = addrcount + 16;
 563                         size_t newsize, oldsize;
 564
 565                         newsize = newlen * sizeof(isc_sockaddr_t);
 566                         oldsize = addrcount * sizeof(isc_sockaddr_t);
 567                         new = isc_mem_get(mctx, newsize);
 568                         if (new == NULL)
 569                                 goto cleanup;
 570                         if (addrcount != 0) {
 571                                 memcpy(new, addrs, oldsize);
 572                                 isc_mem_put(mctx, addrs, oldsize);
 573                         }
 574                         addrs = new;
 575                         addrcount = newlen;
 576
 577                         newsize = newlen * sizeof(dns_name_t *);
 578                         oldsize = keycount * sizeof(dns_name_t *);
 579                         new = isc_mem_get(mctx, newsize);
 580                         if (new == NULL)
 581                                 goto cleanup;
 582                         if (keycount != 0) {
 583                                 memcpy(new, keys, oldsize);
 584                                 isc_mem_put(mctx, keys, oldsize);
 585                         }
 586                         keys = new;
 587                         keycount = newlen;
 588                 }
 589
 590                 addrs[i] = *cfg_obj_assockaddr(addr);
 591                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 592                         isc_sockaddr_setport(&addrs[i], port);
 593                 keys[i] = NULL;
 594                 if (!cfg_obj_isstring(key)) {
 595                         i++;
 596                         continue;
 597                 }
 598                 keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
 599                 if (keys[i] == NULL)
 600                         goto cleanup;
 601                 dns_name_init(keys[i], NULL);
 602
 603                 keystr = cfg_obj_asstring(key);
 604                 isc_buffer_init(&b, keystr, strlen(keystr));
 605                 isc_buffer_add(&b, strlen(keystr));
 606                 dns_fixedname_init(&fname);
 607                 result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
 608                                            dns_rootname, ISC_FALSE, NULL);
 609                 if (result != ISC_R_SUCCESS)
 610                         goto cleanup;
 611                 result = dns_name_dup(dns_fixedname_name(&fname), mctx,
 612                                       keys[i]);
 613                 if (result != ISC_R_SUCCESS)
 614                         goto cleanup;
 615                 i++;
 616         }
 617         if (pushed != 0) {
 618                 pushed--;
 619                 element = stack[pushed].element;
 620                 port = stack[pushed].port;
 621                 goto resume;
 622         }
 623         if (i < addrcount) {
 624                 void * new;
 625                 size_t newsize, oldsize;
 626
 627                 newsize = i * sizeof(isc_sockaddr_t);
 628                 oldsize = addrcount * sizeof(isc_sockaddr_t);
 629                 if (i != 0) {
 630                         new = isc_mem_get(mctx, newsize);
 631                         if (new == NULL)
 632                                 goto cleanup;
 633                         memcpy(new, addrs, newsize);
 634                 } else
 635                         new = NULL;
 636                 isc_mem_put(mctx, addrs, oldsize);
 637                 addrs = new;
 638                 addrcount = i;
 639
 640                 newsize = i * sizeof(dns_name_t *);
 641                 oldsize = keycount * sizeof(dns_name_t *);
 642                 if (i != 0) {
 643                         new = isc_mem_get(mctx, newsize);
 644                         if (new == NULL)
 645                                 goto cleanup;
 646                         memcpy(new, keys,  newsize);
 647                 } else
 648                         new = NULL;
 649                 isc_mem_put(mctx, keys, oldsize);
 650                 keys = new;
 651                 keycount = i;
 652         }
 653
 654         if (lists != NULL)
 655                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 656         if (stack != NULL)
 657                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 658
 659         INSIST(keycount == addrcount);
 660
 661         *addrsp = addrs;
 662         *keysp = keys;
 663         *countp = addrcount;
 664
 665         return (ISC_R_SUCCESS);
 666
 667  cleanup:
 668         if (addrs != NULL)
 669                 isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
 670         if (keys != NULL) {
 671                 for (j = 0; j <= i; j++) {
 672                         if (keys[j] == NULL)
 673                                 continue;
 674                         if (dns_name_dynamic(keys[j]))
 675                                 dns_name_free(keys[j], mctx);
 676                         isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
 677                 }
 678                 isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
 679         }
 680         if (lists != NULL)
 681                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 682         if (stack != NULL)
 683                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 684         return (result);
 685 }
 686
 687 void
 688 ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 689                           dns_name_t ***keysp, isc_uint32_t count)
 690 {
 691         unsigned int i;
 692         dns_name_t **keys = *keysp;
 693
 694         INSIST(addrsp != NULL && *addrsp != NULL);
 695
 696         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 697         for (i = 0; i < count; i++) {
 698                 if (keys[i] == NULL)
 699                         continue;
 700                 if (dns_name_dynamic(keys[i]))
 701                         dns_name_free(keys[i], mctx);
 702                 isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
 703         }
 704         isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
 705         *addrsp = NULL;
 706         *keysp = NULL;
 707 }
 708
 709 isc_result_t
 710 ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
 711         const cfg_obj_t *maps[3];
 712         const cfg_obj_t *options = NULL;
 713         const cfg_obj_t *portobj = NULL;
 714         isc_result_t result;
 715         int i;
 716
 717         (void)cfg_map_get(config, "options", &options);
 718         i = 0;
 719         if (options != NULL)
 720                 maps[i++] = options;
 721         maps[i++] = ns_g_defaults;
 722         maps[i] = NULL;
 723
 724         result = ns_config_get(maps, "port", &portobj);
 725         INSIST(result == ISC_R_SUCCESS);
 726         if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
 727                 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 728                             "port '%u' out of range",
 729                             cfg_obj_asuint32(portobj));
 730                 return (ISC_R_RANGE);
 731         }
 732         *portp = (in_port_t)cfg_obj_asuint32(portobj);
 733         return (ISC_R_SUCCESS);
 734 }
 735
 736 struct keyalgorithms {
 737         const char *str;
 738         enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
 739                hmacsha256, hmacsha384, hmacsha512 } hmac;
 740         isc_uint16_t size;
 741 } algorithms[] = {
 742         { "hmac-md5", hmacmd5, 128 },
 743         { "hmac-md5.sig-alg.reg.int", hmacmd5, 0 },
 744         { "hmac-md5.sig-alg.reg.int.", hmacmd5, 0 },
 745         { "hmac-sha1", hmacsha1, 160 },
 746         { "hmac-sha224", hmacsha224, 224 },
 747         { "hmac-sha256", hmacsha256, 256 },
 748         { "hmac-sha384", hmacsha384, 384 },
 749         { "hmac-sha512", hmacsha512, 512 },
 750         {  NULL, hmacnone, 0 }
 751 };
 752
 753 isc_result_t
 754 ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
 755                           isc_uint16_t *digestbits)
 756 {
 757         int i;
 758         size_t len = 0;
 759         isc_uint16_t bits;
 760         isc_result_t result;
 761
 762         for (i = 0; algorithms[i].str != NULL; i++) {
 763                 len = strlen(algorithms[i].str);
 764                 if (strncasecmp(algorithms[i].str, str, len) == 0 &&
 765                     (str[len] == '\0' ||
 766                      (algorithms[i].size != 0 && str[len] == '-')))
 767                         break;
 768         }
 769         if (algorithms[i].str == NULL)
 770                 return (ISC_R_NOTFOUND);
 771         if (str[len] == '-') {
 772                 result = isc_parse_uint16(&bits, str + len + 1, 10);
 773                 if (result != ISC_R_SUCCESS)
 774                         return (result);
 775                 if (bits > algorithms[i].size)
 776                         return (ISC_R_RANGE);
 777         } else if (algorithms[i].size == 0)
 778                 bits = 128;
 779         else
 780                 bits = algorithms[i].size;
 781
 782         if (name != NULL) {
 783                 switch (algorithms[i].hmac) {
 784                 case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
 785                 case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
 786                 case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
 787                 case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
 788                 case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
 789                 case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
 790                 default:
 791                         INSIST(0);
 792                 }
 793         }
 794         if (digestbits != NULL)
 795                 *digestbits = bits;
 796         return (ISC_R_SUCCESS);
 797 }