contrib/bind9/bin/named/config.c

   1 /*
   2  * Copyright (C) 2004-2007  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 2007/09/13 05:04:01 each 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 default;\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 \n\
 103         /* view */\n\
 104         allow-notify {none;};\n\
 105         allow-update-forwarding {none;};\n\
 106         allow-query-cache { localnets; localhost; };\n\
 107         allow-recursion { localnets; localhost; };\n\
 108 #       allow-v6-synthesis <obsolete>;\n\
 109 #       sortlist <none>\n\
 110 #       topology <none>\n\
 111         auth-nxdomain false;\n\
 112         minimal-responses false;\n\
 113         recursion true;\n\
 114         provide-ixfr true;\n\
 115         request-ixfr true;\n\
 116         fetch-glue no;\n\
 117         rfc2308-type1 no;\n\
 118         additional-from-auth true;\n\
 119         additional-from-cache true;\n\
 120         query-source address *;\n\
 121         query-source-v6 address *;\n\
 122         notify-source *;\n\
 123         notify-source-v6 *;\n\
 124         cleaning-interval 60;\n\
 125         min-roots 2;\n\
 126         lame-ttl 600;\n\
 127         max-ncache-ttl 10800; /* 3 hours */\n\
 128         max-cache-ttl 604800; /* 1 week */\n\
 129         transfer-format many-answers;\n\
 130         max-cache-size 0;\n\
 131         check-names master fail;\n\
 132         check-names slave warn;\n\
 133         check-names response ignore;\n\
 134         check-mx warn;\n\
 135         acache-enable no;\n\
 136         acache-cleaning-interval 60;\n\
 137         max-acache-size 0;\n\
 138         dnssec-enable yes;\n\
 139         dnssec-validation no; /* Make yes for 9.5. */ \n\
 140         dnssec-accept-expired no;\n\
 141         clients-per-query 10;\n\
 142         max-clients-per-query 100;\n\
 143         zero-no-soa-ttl-cache no;\n\
 144 "
 145
 146 "       /* zone */\n\
 147         allow-query {any;};\n\
 148         allow-transfer {any;};\n\
 149         notify yes;\n\
 150 #       also-notify <none>\n\
 151         notify-delay 5;\n\
 152         dialup no;\n\
 153 #       forward <none>\n\
 154 #       forwarders <none>\n\
 155         maintain-ixfr-base no;\n\
 156 #       max-ixfr-log-size <obsolete>\n\
 157         transfer-source *;\n\
 158         transfer-source-v6 *;\n\
 159         alt-transfer-source *;\n\
 160         alt-transfer-source-v6 *;\n\
 161         max-transfer-time-in 120;\n\
 162         max-transfer-time-out 120;\n\
 163         max-transfer-idle-in 60;\n\
 164         max-transfer-idle-out 60;\n\
 165         max-retry-time 1209600; /* 2 weeks */\n\
 166         min-retry-time 500;\n\
 167         max-refresh-time 2419200; /* 4 weeks */\n\
 168         min-refresh-time 300;\n\
 169         multi-master no;\n\
 170         sig-validity-interval 30; /* days */\n\
 171         zone-statistics false;\n\
 172         max-journal-size unlimited;\n\
 173         ixfr-from-differences false;\n\
 174         check-wildcard yes;\n\
 175         check-sibling yes;\n\
 176         check-integrity yes;\n\
 177         check-mx-cname warn;\n\
 178         check-srv-cname warn;\n\
 179         zero-no-soa-ttl yes;\n\
 180         update-check-ksk yes;\n\
 181 };\n\
 182 "
 183
 184 "#\n\
 185 #  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
 186 #\n\
 187 view \"_bind\" chaos {\n\
 188         recursion no;\n\
 189         notify no;\n\
 190 \n\
 191         zone \"version.bind\" chaos {\n\
 192                 type master;\n\
 193                 database \"_builtin version\";\n\
 194         };\n\
 195 \n\
 196         zone \"hostname.bind\" chaos {\n\
 197                 type master;\n\
 198                 database \"_builtin hostname\";\n\
 199         };\n\
 200 \n\
 201         zone \"authors.bind\" chaos {\n\
 202                 type master;\n\
 203                 database \"_builtin authors\";\n\
 204         };\n\
 205         zone \"id.server\" chaos {\n\
 206                 type master;\n\
 207                 database \"_builtin id\";\n\
 208         };\n\
 209 };\n\
 210 ";
 211
 212 isc_result_t
 213 ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
 214         isc_buffer_t b;
 215
 216         isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
 217         isc_buffer_add(&b, sizeof(defaultconf) - 1);
 218         return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
 219 }
 220
 221 isc_result_t
 222 ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
 223         int i;
 224
 225         for (i = 0;; i++) {
 226                 if (maps[i] == NULL)
 227                         return (ISC_R_NOTFOUND);
 228                 if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
 229                         return (ISC_R_SUCCESS);
 230         }
 231 }
 232
 233 isc_result_t
 234 ns_checknames_get(const cfg_obj_t **maps, const char *which,
 235                   const cfg_obj_t **obj)
 236 {
 237         const cfg_listelt_t *element;
 238         const cfg_obj_t *checknames;
 239         const cfg_obj_t *type;
 240         const cfg_obj_t *value;
 241         int i;
 242
 243         for (i = 0;; i++) {
 244                 if (maps[i] == NULL)
 245                         return (ISC_R_NOTFOUND);
 246                 checknames = NULL;
 247                 if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
 248                         /*
 249                          * Zone map entry is not a list.
 250                          */
 251                         if (checknames != NULL && !cfg_obj_islist(checknames)) {
 252                                 *obj = checknames;
 253                                 return (ISC_R_SUCCESS);
 254                         }
 255                         for (element = cfg_list_first(checknames);
 256                              element != NULL;
 257                              element = cfg_list_next(element)) {
 258                                 value = cfg_listelt_value(element);
 259                                 type = cfg_tuple_get(value, "type");
 260                                 if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
 261                                         *obj = cfg_tuple_get(value, "mode");
 262                                         return (ISC_R_SUCCESS);
 263                                 }
 264                         }
 265
 266                 }
 267         }
 268 }
 269
 270 int
 271 ns_config_listcount(const cfg_obj_t *list) {
 272         const cfg_listelt_t *e;
 273         int i = 0;
 274
 275         for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
 276                 i++;
 277
 278         return (i);
 279 }
 280
 281 isc_result_t
 282 ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
 283                    dns_rdataclass_t *classp) {
 284         isc_textregion_t r;
 285         isc_result_t result;
 286
 287         if (!cfg_obj_isstring(classobj)) {
 288                 *classp = defclass;
 289                 return (ISC_R_SUCCESS);
 290         }
 291         DE_CONST(cfg_obj_asstring(classobj), r.base);
 292         r.length = strlen(r.base);
 293         result = dns_rdataclass_fromtext(classp, &r);
 294         if (result != ISC_R_SUCCESS)
 295                 cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
 296                             "unknown class '%s'", r.base);
 297         return (result);
 298 }
 299
 300 isc_result_t
 301 ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
 302                    dns_rdatatype_t *typep) {
 303         isc_textregion_t r;
 304         isc_result_t result;
 305
 306         if (!cfg_obj_isstring(typeobj)) {
 307                 *typep = deftype;
 308                 return (ISC_R_SUCCESS);
 309         }
 310         DE_CONST(cfg_obj_asstring(typeobj), r.base);
 311         r.length = strlen(r.base);
 312         result = dns_rdatatype_fromtext(typep, &r);
 313         if (result != ISC_R_SUCCESS)
 314                 cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
 315                             "unknown type '%s'", r.base);
 316         return (result);
 317 }
 318
 319 dns_zonetype_t
 320 ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
 321         dns_zonetype_t ztype = dns_zone_none;
 322         const char *str;
 323
 324         str = cfg_obj_asstring(zonetypeobj);
 325         if (strcasecmp(str, "master") == 0)
 326                 ztype = dns_zone_master;
 327         else if (strcasecmp(str, "slave") == 0)
 328                 ztype = dns_zone_slave;
 329         else if (strcasecmp(str, "stub") == 0)
 330                 ztype = dns_zone_stub;
 331         else
 332                 INSIST(0);
 333         return (ztype);
 334 }
 335
 336 isc_result_t
 337 ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
 338                     in_port_t defport, isc_mem_t *mctx,
 339                     isc_sockaddr_t **addrsp, isc_uint32_t *countp)
 340 {
 341         int count, i = 0;
 342         const cfg_obj_t *addrlist;
 343         const cfg_obj_t *portobj;
 344         const cfg_listelt_t *element;
 345         isc_sockaddr_t *addrs;
 346         in_port_t port;
 347         isc_result_t result;
 348
 349         INSIST(addrsp != NULL && *addrsp == NULL);
 350         INSIST(countp != NULL);
 351
 352         addrlist = cfg_tuple_get(list, "addresses");
 353         count = ns_config_listcount(addrlist);
 354
 355         portobj = cfg_tuple_get(list, "port");
 356         if (cfg_obj_isuint32(portobj)) {
 357                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 358                 if (val > ISC_UINT16_MAX) {
 359                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 360                                     "port '%u' out of range", val);
 361                         return (ISC_R_RANGE);
 362                 }
 363                 port = (in_port_t) val;
 364         } else if (defport != 0)
 365                 port = defport;
 366         else {
 367                 result = ns_config_getport(config, &port);
 368                 if (result != ISC_R_SUCCESS)
 369                         return (result);
 370         }
 371
 372         addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
 373         if (addrs == NULL)
 374                 return (ISC_R_NOMEMORY);
 375
 376         for (element = cfg_list_first(addrlist);
 377              element != NULL;
 378              element = cfg_list_next(element), i++)
 379         {
 380                 INSIST(i < count);
 381                 addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
 382                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 383                         isc_sockaddr_setport(&addrs[i], port);
 384         }
 385         INSIST(i == count);
 386
 387         *addrsp = addrs;
 388         *countp = count;
 389
 390         return (ISC_R_SUCCESS);
 391 }
 392
 393 void
 394 ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 395                     isc_uint32_t count)
 396 {
 397         INSIST(addrsp != NULL && *addrsp != NULL);
 398
 399         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 400         *addrsp = NULL;
 401 }
 402
 403 static isc_result_t
 404 get_masters_def(const cfg_obj_t *cctx, const char *name,
 405                 const cfg_obj_t **ret)
 406 {
 407         isc_result_t result;
 408         const cfg_obj_t *masters = NULL;
 409         const cfg_listelt_t *elt;
 410
 411         result = cfg_map_get(cctx, "masters", &masters);
 412         if (result != ISC_R_SUCCESS)
 413                 return (result);
 414         for (elt = cfg_list_first(masters);
 415              elt != NULL;
 416              elt = cfg_list_next(elt)) {
 417                 const cfg_obj_t *list;
 418                 const char *listname;
 419
 420                 list = cfg_listelt_value(elt);
 421                 listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
 422
 423                 if (strcasecmp(listname, name) == 0) {
 424                         *ret = list;
 425                         return (ISC_R_SUCCESS);
 426                 }
 427         }
 428         return (ISC_R_NOTFOUND);
 429 }
 430
 431 isc_result_t
 432 ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
 433                           isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 434                           dns_name_t ***keysp, isc_uint32_t *countp)
 435 {
 436         isc_uint32_t addrcount = 0, keycount = 0, i = 0;
 437         isc_uint32_t listcount = 0, l = 0, j;
 438         isc_uint32_t stackcount = 0, pushed = 0;
 439         isc_result_t result;
 440         const cfg_listelt_t *element;
 441         const cfg_obj_t *addrlist;
 442         const cfg_obj_t *portobj;
 443         in_port_t port;
 444         dns_fixedname_t fname;
 445         isc_sockaddr_t *addrs = NULL;
 446         dns_name_t **keys = NULL;
 447         struct { const char *name; } *lists = NULL;
 448         struct {
 449                 const cfg_listelt_t *element;
 450                 in_port_t port;
 451         } *stack = NULL;
 452
 453         REQUIRE(addrsp != NULL && *addrsp == NULL);
 454         REQUIRE(keysp != NULL && *keysp == NULL);
 455         REQUIRE(countp != NULL);
 456
 457  newlist:
 458         addrlist = cfg_tuple_get(list, "addresses");
 459         portobj = cfg_tuple_get(list, "port");
 460         if (cfg_obj_isuint32(portobj)) {
 461                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 462                 if (val > ISC_UINT16_MAX) {
 463                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 464                                     "port '%u' out of range", val);
 465                         result = ISC_R_RANGE;
 466                         goto cleanup;
 467                 }
 468                 port = (in_port_t) val;
 469         } else {
 470                 result = ns_config_getport(config, &port);
 471                 if (result != ISC_R_SUCCESS)
 472                         goto cleanup;
 473         }
 474
 475         result = ISC_R_NOMEMORY;
 476
 477         element = cfg_list_first(addrlist);
 478  resume:
 479         for ( ;
 480              element != NULL;
 481              element = cfg_list_next(element))
 482         {
 483                 const cfg_obj_t *addr;
 484                 const cfg_obj_t *key;
 485                 const char *keystr;
 486                 isc_buffer_t b;
 487
 488                 addr = cfg_tuple_get(cfg_listelt_value(element),
 489                                      "masterselement");
 490                 key = cfg_tuple_get(cfg_listelt_value(element), "key");
 491
 492                 if (!cfg_obj_issockaddr(addr)) {
 493                         const char *listname = cfg_obj_asstring(addr);
 494                         isc_result_t tresult;
 495
 496                         /* Grow lists? */
 497                         if (listcount == l) {
 498                                 void * new;
 499                                 isc_uint32_t newlen = listcount + 16;
 500                                 size_t newsize, oldsize;
 501
 502                                 newsize = newlen * sizeof(*lists);
 503                                 oldsize = listcount * sizeof(*lists);
 504                                 new = isc_mem_get(mctx, newsize);
 505                                 if (new == NULL)
 506                                         goto cleanup;
 507                                 if (listcount != 0) {
 508                                         memcpy(new, lists, oldsize);
 509                                         isc_mem_put(mctx, lists, oldsize);
 510                                 }
 511                                 lists = new;
 512                                 listcount = newlen;
 513                         }
 514                         /* Seen? */
 515                         for (j = 0; j < l; j++)
 516                                 if (strcasecmp(lists[j].name, listname) == 0)
 517                                         break;
 518                         if (j < l)
 519                                 continue;
 520                         tresult = get_masters_def(config, listname, &list);
 521                         if (tresult == ISC_R_NOTFOUND) {
 522                                 cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
 523                                     "masters \"%s\" not found", listname);
 524
 525                                 result = tresult;
 526                                 goto cleanup;
 527                         }
 528                         if (tresult != ISC_R_SUCCESS)
 529                                 goto cleanup;
 530                         lists[l++].name = listname;
 531                         /* Grow stack? */
 532                         if (stackcount == pushed) {
 533                                 void * new;
 534                                 isc_uint32_t newlen = stackcount + 16;
 535                                 size_t newsize, oldsize;
 536
 537                                 newsize = newlen * sizeof(*stack);
 538                                 oldsize = stackcount * sizeof(*stack);
 539                                 new = isc_mem_get(mctx, newsize);
 540                                 if (new == NULL)
 541                                         goto cleanup;
 542                                 if (stackcount != 0) {
 543                                         memcpy(new, stack, oldsize);
 544                                         isc_mem_put(mctx, stack, oldsize);
 545                                 }
 546                                 stack = new;
 547                                 stackcount = newlen;
 548                         }
 549                         /*
 550                          * We want to resume processing this list on the
 551                          * next element.
 552                          */
 553                         stack[pushed].element = cfg_list_next(element);
 554                         stack[pushed].port = port;
 555                         pushed++;
 556                         goto newlist;
 557                 }
 558
 559                 if (i == addrcount) {
 560                         void * new;
 561                         isc_uint32_t newlen = addrcount + 16;
 562                         size_t newsize, oldsize;
 563
 564                         newsize = newlen * sizeof(isc_sockaddr_t);
 565                         oldsize = addrcount * sizeof(isc_sockaddr_t);
 566                         new = isc_mem_get(mctx, newsize);
 567                         if (new == NULL)
 568                                 goto cleanup;
 569                         if (addrcount != 0) {
 570                                 memcpy(new, addrs, oldsize);
 571                                 isc_mem_put(mctx, addrs, oldsize);
 572                         }
 573                         addrs = new;
 574                         addrcount = newlen;
 575
 576                         newsize = newlen * sizeof(dns_name_t *);
 577                         oldsize = keycount * sizeof(dns_name_t *);
 578                         new = isc_mem_get(mctx, newsize);
 579                         if (new == NULL)
 580                                 goto cleanup;
 581                         if (keycount != 0) {
 582                                 memcpy(new, keys, oldsize);
 583                                 isc_mem_put(mctx, keys, oldsize);
 584                         }
 585                         keys = new;
 586                         keycount = newlen;
 587                 }
 588
 589                 addrs[i] = *cfg_obj_assockaddr(addr);
 590                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 591                         isc_sockaddr_setport(&addrs[i], port);
 592                 keys[i] = NULL;
 593                 if (!cfg_obj_isstring(key)) {
 594                         i++;
 595                         continue;
 596                 }
 597                 keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
 598                 if (keys[i] == NULL)
 599                         goto cleanup;
 600                 dns_name_init(keys[i], NULL);
 601
 602                 keystr = cfg_obj_asstring(key);
 603                 isc_buffer_init(&b, keystr, strlen(keystr));
 604                 isc_buffer_add(&b, strlen(keystr));
 605                 dns_fixedname_init(&fname);
 606                 result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
 607                                            dns_rootname, ISC_FALSE, NULL);
 608                 if (result != ISC_R_SUCCESS)
 609                         goto cleanup;
 610                 result = dns_name_dup(dns_fixedname_name(&fname), mctx,
 611                                       keys[i]);
 612                 if (result != ISC_R_SUCCESS)
 613                         goto cleanup;
 614                 i++;
 615         }
 616         if (pushed != 0) {
 617                 pushed--;
 618                 element = stack[pushed].element;
 619                 port = stack[pushed].port;
 620                 goto resume;
 621         }
 622         if (i < addrcount) {
 623                 void * new;
 624                 size_t newsize, oldsize;
 625
 626                 newsize = i * sizeof(isc_sockaddr_t);
 627                 oldsize = addrcount * sizeof(isc_sockaddr_t);
 628                 if (i != 0) {
 629                         new = isc_mem_get(mctx, newsize);
 630                         if (new == NULL)
 631                                 goto cleanup;
 632                         memcpy(new, addrs, newsize);
 633                 } else
 634                         new = NULL;
 635                 isc_mem_put(mctx, addrs, oldsize);
 636                 addrs = new;
 637                 addrcount = i;
 638
 639                 newsize = i * sizeof(dns_name_t *);
 640                 oldsize = keycount * sizeof(dns_name_t *);
 641                 if (i != 0) {
 642                         new = isc_mem_get(mctx, newsize);
 643                         if (new == NULL)
 644                                 goto cleanup;
 645                         memcpy(new, keys,  newsize);
 646                 } else
 647                         new = NULL;
 648                 isc_mem_put(mctx, keys, oldsize);
 649                 keys = new;
 650                 keycount = i;
 651         }
 652
 653         if (lists != NULL)
 654                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 655         if (stack != NULL)
 656                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 657
 658         INSIST(keycount == addrcount);
 659
 660         *addrsp = addrs;
 661         *keysp = keys;
 662         *countp = addrcount;
 663
 664         return (ISC_R_SUCCESS);
 665
 666  cleanup:
 667         if (addrs != NULL)
 668                 isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
 669         if (keys != NULL) {
 670                 for (j = 0; j <= i; j++) {
 671                         if (keys[j] == NULL)
 672                                 continue;
 673                         if (dns_name_dynamic(keys[j]))
 674                                 dns_name_free(keys[j], mctx);
 675                         isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
 676                 }
 677                 isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
 678         }
 679         if (lists != NULL)
 680                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 681         if (stack != NULL)
 682                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 683         return (result);
 684 }
 685
 686 void
 687 ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 688                           dns_name_t ***keysp, isc_uint32_t count)
 689 {
 690         unsigned int i;
 691         dns_name_t **keys = *keysp;
 692
 693         INSIST(addrsp != NULL && *addrsp != NULL);
 694
 695         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 696         for (i = 0; i < count; i++) {
 697                 if (keys[i] == NULL)
 698                         continue;
 699                 if (dns_name_dynamic(keys[i]))
 700                         dns_name_free(keys[i], mctx);
 701                 isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
 702         }
 703         isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
 704         *addrsp = NULL;
 705         *keysp = NULL;
 706 }
 707
 708 isc_result_t
 709 ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
 710         const cfg_obj_t *maps[3];
 711         const cfg_obj_t *options = NULL;
 712         const cfg_obj_t *portobj = NULL;
 713         isc_result_t result;
 714         int i;
 715
 716         (void)cfg_map_get(config, "options", &options);
 717         i = 0;
 718         if (options != NULL)
 719                 maps[i++] = options;
 720         maps[i++] = ns_g_defaults;
 721         maps[i] = NULL;
 722
 723         result = ns_config_get(maps, "port", &portobj);
 724         INSIST(result == ISC_R_SUCCESS);
 725         if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
 726                 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 727                             "port '%u' out of range",
 728                             cfg_obj_asuint32(portobj));
 729                 return (ISC_R_RANGE);
 730         }
 731         *portp = (in_port_t)cfg_obj_asuint32(portobj);
 732         return (ISC_R_SUCCESS);
 733 }
 734
 735 struct keyalgorithms {
 736         const char *str;
 737         enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
 738                hmacsha256, hmacsha384, hmacsha512 } hmac;
 739         isc_uint16_t size;
 740 } algorithms[] = {
 741         { "hmac-md5", hmacmd5, 128 },
 742         { "hmac-md5.sig-alg.reg.int", hmacmd5, 0 },
 743         { "hmac-md5.sig-alg.reg.int.", hmacmd5, 0 },
 744         { "hmac-sha1", hmacsha1, 160 },
 745         { "hmac-sha224", hmacsha224, 224 },
 746         { "hmac-sha256", hmacsha256, 256 },
 747         { "hmac-sha384", hmacsha384, 384 },
 748         { "hmac-sha512", hmacsha512, 512 },
 749         {  NULL, hmacnone, 0 }
 750 };
 751
 752 isc_result_t
 753 ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
 754                           isc_uint16_t *digestbits)
 755 {
 756         int i;
 757         size_t len = 0;
 758         isc_uint16_t bits;
 759         isc_result_t result;
 760
 761         for (i = 0; algorithms[i].str != NULL; i++) {
 762                 len = strlen(algorithms[i].str);
 763                 if (strncasecmp(algorithms[i].str, str, len) == 0 &&
 764                     (str[len] == '\0' ||
 765                      (algorithms[i].size != 0 && str[len] == '-')))
 766                         break;
 767         }
 768         if (algorithms[i].str == NULL)
 769                 return (ISC_R_NOTFOUND);
 770         if (str[len] == '-') {
 771                 result = isc_parse_uint16(&bits, str + len + 1, 10);
 772                 if (result != ISC_R_SUCCESS)
 773                         return (result);
 774                 if (bits > algorithms[i].size)
 775                         return (ISC_R_RANGE);
 776         } else if (algorithms[i].size == 0)
 777                 bits = 128;
 778         else
 779                 bits = algorithms[i].size;
 780
 781         if (name != NULL) {
 782                 switch (algorithms[i].hmac) {
 783                 case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
 784                 case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
 785                 case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
 786                 case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
 787                 case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
 788                 case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
 789                 default:
 790                         INSIST(0);
 791                 }
 792         }
 793         if (digestbits != NULL)
 794                 *digestbits = bits;
 795         return (ISC_R_SUCCESS);
 796 }