bin/named/config.c

   1 /*
   2  * Copyright (C) 2004-2010  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 1.106.4.2 2010/05/14 23:49:18 tbox Exp $ */
  19
  20 /*! \file */
  21
  22 #include <config.h>
  23
  24 #include <stdlib.h>
  25
  26 #include <isc/buffer.h>
  27 #include <isc/log.h>
  28 #include <isc/mem.h>
  29 #include <isc/parseint.h>
  30 #include <isc/region.h>
  31 #include <isc/result.h>
  32 #include <isc/sockaddr.h>
  33 #include <isc/string.h>
  34 #include <isc/util.h>
  35
  36 #include <isccfg/namedconf.h>
  37
  38 #include <dns/fixedname.h>
  39 #include <dns/name.h>
  40 #include <dns/rdataclass.h>
  41 #include <dns/rdatatype.h>
  42 #include <dns/tsig.h>
  43 #include <dns/zone.h>
  44
  45 #include <dst/dst.h>
  46
  47 #include <named/config.h>
  48 #include <named/globals.h>
  49
  50 #include "bind.keys.h"
  51
  52 /*% default configuration */
  53 static char defaultconf[] = "\
  54 options {\n\
  55 #       blackhole {none;};\n"
  56 #ifndef WIN32
  57 "       coresize default;\n\
  58         datasize default;\n\
  59         files unlimited;\n\
  60         stacksize default;\n"
  61 #endif
  62 "#      session-keyfile \"" NS_LOCALSTATEDIR "/run/named/session.key\";\n\
  63         session-keyname local-ddns;\n\
  64         session-keyalg hmac-sha256;\n\
  65         deallocate-on-exit true;\n\
  66 #       directory <none>\n\
  67         dump-file \"named_dump.db\";\n\
  68         fake-iquery no;\n\
  69         has-old-clients false;\n\
  70         heartbeat-interval 60;\n\
  71         host-statistics no;\n\
  72         interface-interval 60;\n\
  73         listen-on {any;};\n\
  74         listen-on-v6 {none;};\n\
  75         match-mapped-addresses no;\n\
  76         memstatistics-file \"named.memstats\";\n\
  77         multiple-cnames no;\n\
  78 #       named-xfer <obsolete>;\n\
  79 #       pid-file \"" NS_LOCALSTATEDIR "/run/named/named.pid\"; /* or /lwresd.pid */\n\
  80         bindkeys-file \"" NS_SYSCONFDIR "/bind.keys\";\n\
  81         port 53;\n\
  82         recursing-file \"named.recursing\";\n\
  83 "
  84 #ifdef PATH_RANDOMDEV
  85 "\
  86         random-device \"" PATH_RANDOMDEV "\";\n\
  87 "
  88 #endif
  89 "\
  90         recursive-clients 1000;\n\
  91         rrset-order {type NS order random; order cyclic; };\n\
  92         serial-queries 20;\n\
  93         serial-query-rate 20;\n\
  94         server-id none;\n\
  95         statistics-file \"named.stats\";\n\
  96         statistics-interval 60;\n\
  97         tcp-clients 100;\n\
  98         tcp-listen-queue 3;\n\
  99 #       tkey-dhkey <none>\n\
 100 #       tkey-gssapi-credential <none>\n\
 101 #       tkey-domain <none>\n\
 102         transfers-per-ns 2;\n\
 103         transfers-in 10;\n\
 104         transfers-out 10;\n\
 105         treat-cr-as-space true;\n\
 106         use-id-pool true;\n\
 107         use-ixfr true;\n\
 108         edns-udp-size 4096;\n\
 109         max-udp-size 4096;\n\
 110         request-nsid false;\n\
 111         reserved-sockets 512;\n\
 112 \n\
 113         /* DLV */\n\
 114         dnssec-lookaside . trust-anchor dlv.isc.org;\n\
 115 \n\
 116         /* view */\n\
 117         allow-notify {none;};\n\
 118         allow-update-forwarding {none;};\n\
 119         allow-query-cache { localnets; localhost; };\n\
 120         allow-query-cache-on { any; };\n\
 121         allow-recursion { localnets; localhost; };\n\
 122         allow-recursion-on { any; };\n\
 123 #       allow-v6-synthesis <obsolete>;\n\
 124 #       sortlist <none>\n\
 125 #       topology <none>\n\
 126         auth-nxdomain false;\n\
 127         minimal-responses false;\n\
 128         recursion true;\n\
 129         provide-ixfr true;\n\
 130         request-ixfr true;\n\
 131         fetch-glue no;\n\
 132         rfc2308-type1 no;\n\
 133         additional-from-auth true;\n\
 134         additional-from-cache true;\n\
 135         query-source address *;\n\
 136         query-source-v6 address *;\n\
 137         notify-source *;\n\
 138         notify-source-v6 *;\n\
 139         cleaning-interval 0;  /* now meaningless */\n\
 140         min-roots 2;\n\
 141         lame-ttl 600;\n\
 142         max-ncache-ttl 10800; /* 3 hours */\n\
 143         max-cache-ttl 604800; /* 1 week */\n\
 144         transfer-format many-answers;\n\
 145         max-cache-size 0;\n\
 146         check-names master fail;\n\
 147         check-names slave warn;\n\
 148         check-names response ignore;\n\
 149         check-dup-records warn;\n\
 150         check-mx warn;\n\
 151         acache-enable no;\n\
 152         acache-cleaning-interval 60;\n\
 153         max-acache-size 16M;\n\
 154         dnssec-enable yes;\n\
 155         dnssec-validation yes; \n\
 156         dnssec-accept-expired no;\n\
 157         clients-per-query 10;\n\
 158         max-clients-per-query 100;\n\
 159         zero-no-soa-ttl-cache no;\n\
 160         nsec3-test-zone no;\n\
 161 "
 162 #ifdef ALLOW_FILTER_AAAA_ON_V4
 163 "       filter-aaaa-on-v4 no;\n\
 164 "
 165 #endif
 166
 167 "       /* zone */\n\
 168         allow-query {any;};\n\
 169         allow-query-on {any;};\n\
 170         allow-transfer {any;};\n\
 171         notify yes;\n\
 172 #       also-notify <none>\n\
 173         notify-delay 5;\n\
 174         notify-to-soa no;\n\
 175         dialup no;\n\
 176 #       forward <none>\n\
 177 #       forwarders <none>\n\
 178         maintain-ixfr-base no;\n\
 179 #       max-ixfr-log-size <obsolete>\n\
 180         transfer-source *;\n\
 181         transfer-source-v6 *;\n\
 182         alt-transfer-source *;\n\
 183         alt-transfer-source-v6 *;\n\
 184         max-transfer-time-in 120;\n\
 185         max-transfer-time-out 120;\n\
 186         max-transfer-idle-in 60;\n\
 187         max-transfer-idle-out 60;\n\
 188         max-retry-time 1209600; /* 2 weeks */\n\
 189         min-retry-time 500;\n\
 190         max-refresh-time 2419200; /* 4 weeks */\n\
 191         min-refresh-time 300;\n\
 192         multi-master no;\n\
 193         dnssec-secure-to-insecure no;\n\
 194         sig-validity-interval 30; /* days */\n\
 195         sig-signing-nodes 100;\n\
 196         sig-signing-signatures 10;\n\
 197         sig-signing-type 65534;\n\
 198         zone-statistics false;\n\
 199         max-journal-size unlimited;\n\
 200         ixfr-from-differences false;\n\
 201         check-wildcard yes;\n\
 202         check-sibling yes;\n\
 203         check-integrity yes;\n\
 204         check-mx-cname warn;\n\
 205         check-srv-cname warn;\n\
 206         zero-no-soa-ttl yes;\n\
 207         update-check-ksk yes;\n\
 208         dnssec-dnskey-kskonly no;\n\
 209         try-tcp-refresh yes; /* BIND 8 compat */\n\
 210 };\n\
 211 "
 212
 213 "#\n\
 214 #  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
 215 #\n\
 216 view \"_bind\" chaos {\n\
 217         recursion no;\n\
 218         notify no;\n\
 219 \n\
 220         zone \"version.bind\" chaos {\n\
 221                 type master;\n\
 222                 database \"_builtin version\";\n\
 223         };\n\
 224 \n\
 225         zone \"hostname.bind\" chaos {\n\
 226                 type master;\n\
 227                 database \"_builtin hostname\";\n\
 228         };\n\
 229 \n\
 230         zone \"authors.bind\" chaos {\n\
 231                 type master;\n\
 232                 database \"_builtin authors\";\n\
 233         };\n\
 234 \n\
 235         zone \"id.server\" chaos {\n\
 236                 type master;\n\
 237                 database \"_builtin id\";\n\
 238         };\n\
 239 };\n\
 240 "
 241 "#\n\
 242 #  Default trusted key(s) for builtin DLV support\n\
 243 #  (used if \"dnssec-lookaside auto;\" is set and\n\
 244 #  sysconfdir/bind.keys doesn't exist).\n\
 245 #\n\
 246 # BEGIN MANAGED KEYS\n"
 247
 248 /* Imported from bind.keys.h: */
 249 MANAGED_KEYS
 250
 251 "# END MANAGED KEYS\n\
 252 ";
 253
 254 isc_result_t
 255 ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
 256         isc_buffer_t b;
 257
 258         isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
 259         isc_buffer_add(&b, sizeof(defaultconf) - 1);
 260         return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
 261 }
 262
 263 isc_result_t
 264 ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
 265         int i;
 266
 267         for (i = 0;; i++) {
 268                 if (maps[i] == NULL)
 269                         return (ISC_R_NOTFOUND);
 270                 if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
 271                         return (ISC_R_SUCCESS);
 272         }
 273 }
 274
 275 isc_result_t
 276 ns_checknames_get(const cfg_obj_t **maps, const char *which,
 277                   const cfg_obj_t **obj)
 278 {
 279         const cfg_listelt_t *element;
 280         const cfg_obj_t *checknames;
 281         const cfg_obj_t *type;
 282         const cfg_obj_t *value;
 283         int i;
 284
 285         for (i = 0;; i++) {
 286                 if (maps[i] == NULL)
 287                         return (ISC_R_NOTFOUND);
 288                 checknames = NULL;
 289                 if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
 290                         /*
 291                          * Zone map entry is not a list.
 292                          */
 293                         if (checknames != NULL && !cfg_obj_islist(checknames)) {
 294                                 *obj = checknames;
 295                                 return (ISC_R_SUCCESS);
 296                         }
 297                         for (element = cfg_list_first(checknames);
 298                              element != NULL;
 299                              element = cfg_list_next(element)) {
 300                                 value = cfg_listelt_value(element);
 301                                 type = cfg_tuple_get(value, "type");
 302                                 if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
 303                                         *obj = cfg_tuple_get(value, "mode");
 304                                         return (ISC_R_SUCCESS);
 305                                 }
 306                         }
 307
 308                 }
 309         }
 310 }
 311
 312 int
 313 ns_config_listcount(const cfg_obj_t *list) {
 314         const cfg_listelt_t *e;
 315         int i = 0;
 316
 317         for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
 318                 i++;
 319
 320         return (i);
 321 }
 322
 323 isc_result_t
 324 ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
 325                    dns_rdataclass_t *classp) {
 326         isc_textregion_t r;
 327         isc_result_t result;
 328
 329         if (!cfg_obj_isstring(classobj)) {
 330                 *classp = defclass;
 331                 return (ISC_R_SUCCESS);
 332         }
 333         DE_CONST(cfg_obj_asstring(classobj), r.base);
 334         r.length = strlen(r.base);
 335         result = dns_rdataclass_fromtext(classp, &r);
 336         if (result != ISC_R_SUCCESS)
 337                 cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
 338                             "unknown class '%s'", r.base);
 339         return (result);
 340 }
 341
 342 isc_result_t
 343 ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
 344                    dns_rdatatype_t *typep) {
 345         isc_textregion_t r;
 346         isc_result_t result;
 347
 348         if (!cfg_obj_isstring(typeobj)) {
 349                 *typep = deftype;
 350                 return (ISC_R_SUCCESS);
 351         }
 352         DE_CONST(cfg_obj_asstring(typeobj), r.base);
 353         r.length = strlen(r.base);
 354         result = dns_rdatatype_fromtext(typep, &r);
 355         if (result != ISC_R_SUCCESS)
 356                 cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
 357                             "unknown type '%s'", r.base);
 358         return (result);
 359 }
 360
 361 dns_zonetype_t
 362 ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
 363         dns_zonetype_t ztype = dns_zone_none;
 364         const char *str;
 365
 366         str = cfg_obj_asstring(zonetypeobj);
 367         if (strcasecmp(str, "master") == 0)
 368                 ztype = dns_zone_master;
 369         else if (strcasecmp(str, "slave") == 0)
 370                 ztype = dns_zone_slave;
 371         else if (strcasecmp(str, "stub") == 0)
 372                 ztype = dns_zone_stub;
 373         else
 374                 INSIST(0);
 375         return (ztype);
 376 }
 377
 378 isc_result_t
 379 ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
 380                     in_port_t defport, isc_mem_t *mctx,
 381                     isc_sockaddr_t **addrsp, isc_uint32_t *countp)
 382 {
 383         int count, i = 0;
 384         const cfg_obj_t *addrlist;
 385         const cfg_obj_t *portobj;
 386         const cfg_listelt_t *element;
 387         isc_sockaddr_t *addrs;
 388         in_port_t port;
 389         isc_result_t result;
 390
 391         INSIST(addrsp != NULL && *addrsp == NULL);
 392         INSIST(countp != NULL);
 393
 394         addrlist = cfg_tuple_get(list, "addresses");
 395         count = ns_config_listcount(addrlist);
 396
 397         portobj = cfg_tuple_get(list, "port");
 398         if (cfg_obj_isuint32(portobj)) {
 399                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 400                 if (val > ISC_UINT16_MAX) {
 401                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 402                                     "port '%u' out of range", val);
 403                         return (ISC_R_RANGE);
 404                 }
 405                 port = (in_port_t) val;
 406         } else if (defport != 0)
 407                 port = defport;
 408         else {
 409                 result = ns_config_getport(config, &port);
 410                 if (result != ISC_R_SUCCESS)
 411                         return (result);
 412         }
 413
 414         addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
 415         if (addrs == NULL)
 416                 return (ISC_R_NOMEMORY);
 417
 418         for (element = cfg_list_first(addrlist);
 419              element != NULL;
 420              element = cfg_list_next(element), i++)
 421         {
 422                 INSIST(i < count);
 423                 addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
 424                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 425                         isc_sockaddr_setport(&addrs[i], port);
 426         }
 427         INSIST(i == count);
 428
 429         *addrsp = addrs;
 430         *countp = count;
 431
 432         return (ISC_R_SUCCESS);
 433 }
 434
 435 void
 436 ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 437                     isc_uint32_t count)
 438 {
 439         INSIST(addrsp != NULL && *addrsp != NULL);
 440
 441         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 442         *addrsp = NULL;
 443 }
 444
 445 static isc_result_t
 446 get_masters_def(const cfg_obj_t *cctx, const char *name,
 447                 const cfg_obj_t **ret)
 448 {
 449         isc_result_t result;
 450         const cfg_obj_t *masters = NULL;
 451         const cfg_listelt_t *elt;
 452
 453         result = cfg_map_get(cctx, "masters", &masters);
 454         if (result != ISC_R_SUCCESS)
 455                 return (result);
 456         for (elt = cfg_list_first(masters);
 457              elt != NULL;
 458              elt = cfg_list_next(elt)) {
 459                 const cfg_obj_t *list;
 460                 const char *listname;
 461
 462                 list = cfg_listelt_value(elt);
 463                 listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
 464
 465                 if (strcasecmp(listname, name) == 0) {
 466                         *ret = list;
 467                         return (ISC_R_SUCCESS);
 468                 }
 469         }
 470         return (ISC_R_NOTFOUND);
 471 }
 472
 473 isc_result_t
 474 ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
 475                           isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 476                           dns_name_t ***keysp, isc_uint32_t *countp)
 477 {
 478         isc_uint32_t addrcount = 0, keycount = 0, i = 0;
 479         isc_uint32_t listcount = 0, l = 0, j;
 480         isc_uint32_t stackcount = 0, pushed = 0;
 481         isc_result_t result;
 482         const cfg_listelt_t *element;
 483         const cfg_obj_t *addrlist;
 484         const cfg_obj_t *portobj;
 485         in_port_t port;
 486         dns_fixedname_t fname;
 487         isc_sockaddr_t *addrs = NULL;
 488         dns_name_t **keys = NULL;
 489         struct { const char *name; } *lists = NULL;
 490         struct {
 491                 const cfg_listelt_t *element;
 492                 in_port_t port;
 493         } *stack = NULL;
 494
 495         REQUIRE(addrsp != NULL && *addrsp == NULL);
 496         REQUIRE(keysp != NULL && *keysp == NULL);
 497         REQUIRE(countp != NULL);
 498
 499  newlist:
 500         addrlist = cfg_tuple_get(list, "addresses");
 501         portobj = cfg_tuple_get(list, "port");
 502         if (cfg_obj_isuint32(portobj)) {
 503                 isc_uint32_t val = cfg_obj_asuint32(portobj);
 504                 if (val > ISC_UINT16_MAX) {
 505                         cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 506                                     "port '%u' out of range", val);
 507                         result = ISC_R_RANGE;
 508                         goto cleanup;
 509                 }
 510                 port = (in_port_t) val;
 511         } else {
 512                 result = ns_config_getport(config, &port);
 513                 if (result != ISC_R_SUCCESS)
 514                         goto cleanup;
 515         }
 516
 517         result = ISC_R_NOMEMORY;
 518
 519         element = cfg_list_first(addrlist);
 520  resume:
 521         for ( ;
 522              element != NULL;
 523              element = cfg_list_next(element))
 524         {
 525                 const cfg_obj_t *addr;
 526                 const cfg_obj_t *key;
 527                 const char *keystr;
 528                 isc_buffer_t b;
 529
 530                 addr = cfg_tuple_get(cfg_listelt_value(element),
 531                                      "masterselement");
 532                 key = cfg_tuple_get(cfg_listelt_value(element), "key");
 533
 534                 if (!cfg_obj_issockaddr(addr)) {
 535                         const char *listname = cfg_obj_asstring(addr);
 536                         isc_result_t tresult;
 537
 538                         /* Grow lists? */
 539                         if (listcount == l) {
 540                                 void * new;
 541                                 isc_uint32_t newlen = listcount + 16;
 542                                 size_t newsize, oldsize;
 543
 544                                 newsize = newlen * sizeof(*lists);
 545                                 oldsize = listcount * sizeof(*lists);
 546                                 new = isc_mem_get(mctx, newsize);
 547                                 if (new == NULL)
 548                                         goto cleanup;
 549                                 if (listcount != 0) {
 550                                         memcpy(new, lists, oldsize);
 551                                         isc_mem_put(mctx, lists, oldsize);
 552                                 }
 553                                 lists = new;
 554                                 listcount = newlen;
 555                         }
 556                         /* Seen? */
 557                         for (j = 0; j < l; j++)
 558                                 if (strcasecmp(lists[j].name, listname) == 0)
 559                                         break;
 560                         if (j < l)
 561                                 continue;
 562                         tresult = get_masters_def(config, listname, &list);
 563                         if (tresult == ISC_R_NOTFOUND) {
 564                                 cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
 565                                     "masters \"%s\" not found", listname);
 566
 567                                 result = tresult;
 568                                 goto cleanup;
 569                         }
 570                         if (tresult != ISC_R_SUCCESS)
 571                                 goto cleanup;
 572                         lists[l++].name = listname;
 573                         /* Grow stack? */
 574                         if (stackcount == pushed) {
 575                                 void * new;
 576                                 isc_uint32_t newlen = stackcount + 16;
 577                                 size_t newsize, oldsize;
 578
 579                                 newsize = newlen * sizeof(*stack);
 580                                 oldsize = stackcount * sizeof(*stack);
 581                                 new = isc_mem_get(mctx, newsize);
 582                                 if (new == NULL)
 583                                         goto cleanup;
 584                                 if (stackcount != 0) {
 585                                         memcpy(new, stack, oldsize);
 586                                         isc_mem_put(mctx, stack, oldsize);
 587                                 }
 588                                 stack = new;
 589                                 stackcount = newlen;
 590                         }
 591                         /*
 592                          * We want to resume processing this list on the
 593                          * next element.
 594                          */
 595                         stack[pushed].element = cfg_list_next(element);
 596                         stack[pushed].port = port;
 597                         pushed++;
 598                         goto newlist;
 599                 }
 600
 601                 if (i == addrcount) {
 602                         void * new;
 603                         isc_uint32_t newlen = addrcount + 16;
 604                         size_t newsize, oldsize;
 605
 606                         newsize = newlen * sizeof(isc_sockaddr_t);
 607                         oldsize = addrcount * sizeof(isc_sockaddr_t);
 608                         new = isc_mem_get(mctx, newsize);
 609                         if (new == NULL)
 610                                 goto cleanup;
 611                         if (addrcount != 0) {
 612                                 memcpy(new, addrs, oldsize);
 613                                 isc_mem_put(mctx, addrs, oldsize);
 614                         }
 615                         addrs = new;
 616                         addrcount = newlen;
 617
 618                         newsize = newlen * sizeof(dns_name_t *);
 619                         oldsize = keycount * sizeof(dns_name_t *);
 620                         new = isc_mem_get(mctx, newsize);
 621                         if (new == NULL)
 622                                 goto cleanup;
 623                         if (keycount != 0) {
 624                                 memcpy(new, keys, oldsize);
 625                                 isc_mem_put(mctx, keys, oldsize);
 626                         }
 627                         keys = new;
 628                         keycount = newlen;
 629                 }
 630
 631                 addrs[i] = *cfg_obj_assockaddr(addr);
 632                 if (isc_sockaddr_getport(&addrs[i]) == 0)
 633                         isc_sockaddr_setport(&addrs[i], port);
 634                 keys[i] = NULL;
 635                 if (!cfg_obj_isstring(key)) {
 636                         i++;
 637                         continue;
 638                 }
 639                 keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
 640                 if (keys[i] == NULL)
 641                         goto cleanup;
 642                 dns_name_init(keys[i], NULL);
 643
 644                 keystr = cfg_obj_asstring(key);
 645                 isc_buffer_init(&b, keystr, strlen(keystr));
 646                 isc_buffer_add(&b, strlen(keystr));
 647                 dns_fixedname_init(&fname);
 648                 result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
 649                                            dns_rootname, 0, NULL);
 650                 if (result != ISC_R_SUCCESS)
 651                         goto cleanup;
 652                 result = dns_name_dup(dns_fixedname_name(&fname), mctx,
 653                                       keys[i]);
 654                 if (result != ISC_R_SUCCESS)
 655                         goto cleanup;
 656                 i++;
 657         }
 658         if (pushed != 0) {
 659                 pushed--;
 660                 element = stack[pushed].element;
 661                 port = stack[pushed].port;
 662                 goto resume;
 663         }
 664         if (i < addrcount) {
 665                 void * new;
 666                 size_t newsize, oldsize;
 667
 668                 newsize = i * sizeof(isc_sockaddr_t);
 669                 oldsize = addrcount * sizeof(isc_sockaddr_t);
 670                 if (i != 0) {
 671                         new = isc_mem_get(mctx, newsize);
 672                         if (new == NULL)
 673                                 goto cleanup;
 674                         memcpy(new, addrs, newsize);
 675                 } else
 676                         new = NULL;
 677                 isc_mem_put(mctx, addrs, oldsize);
 678                 addrs = new;
 679                 addrcount = i;
 680
 681                 newsize = i * sizeof(dns_name_t *);
 682                 oldsize = keycount * sizeof(dns_name_t *);
 683                 if (i != 0) {
 684                         new = isc_mem_get(mctx, newsize);
 685                         if (new == NULL)
 686                                 goto cleanup;
 687                         memcpy(new, keys,  newsize);
 688                 } else
 689                         new = NULL;
 690                 isc_mem_put(mctx, keys, oldsize);
 691                 keys = new;
 692                 keycount = i;
 693         }
 694
 695         if (lists != NULL)
 696                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 697         if (stack != NULL)
 698                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 699
 700         INSIST(keycount == addrcount);
 701
 702         *addrsp = addrs;
 703         *keysp = keys;
 704         *countp = addrcount;
 705
 706         return (ISC_R_SUCCESS);
 707
 708  cleanup:
 709         if (addrs != NULL)
 710                 isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
 711         if (keys != NULL) {
 712                 for (j = 0; j <= i; j++) {
 713                         if (keys[j] == NULL)
 714                                 continue;
 715                         if (dns_name_dynamic(keys[j]))
 716                                 dns_name_free(keys[j], mctx);
 717                         isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
 718                 }
 719                 isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
 720         }
 721         if (lists != NULL)
 722                 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
 723         if (stack != NULL)
 724                 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
 725         return (result);
 726 }
 727
 728 void
 729 ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
 730                           dns_name_t ***keysp, isc_uint32_t count)
 731 {
 732         unsigned int i;
 733         dns_name_t **keys = *keysp;
 734
 735         INSIST(addrsp != NULL && *addrsp != NULL);
 736
 737         isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
 738         for (i = 0; i < count; i++) {
 739                 if (keys[i] == NULL)
 740                         continue;
 741                 if (dns_name_dynamic(keys[i]))
 742                         dns_name_free(keys[i], mctx);
 743                 isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
 744         }
 745         isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
 746         *addrsp = NULL;
 747         *keysp = NULL;
 748 }
 749
 750 isc_result_t
 751 ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
 752         const cfg_obj_t *maps[3];
 753         const cfg_obj_t *options = NULL;
 754         const cfg_obj_t *portobj = NULL;
 755         isc_result_t result;
 756         int i;
 757
 758         (void)cfg_map_get(config, "options", &options);
 759         i = 0;
 760         if (options != NULL)
 761                 maps[i++] = options;
 762         maps[i++] = ns_g_defaults;
 763         maps[i] = NULL;
 764
 765         result = ns_config_get(maps, "port", &portobj);
 766         INSIST(result == ISC_R_SUCCESS);
 767         if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
 768                 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
 769                             "port '%u' out of range",
 770                             cfg_obj_asuint32(portobj));
 771                 return (ISC_R_RANGE);
 772         }
 773         *portp = (in_port_t)cfg_obj_asuint32(portobj);
 774         return (ISC_R_SUCCESS);
 775 }
 776
 777 struct keyalgorithms {
 778         const char *str;
 779         enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
 780                hmacsha256, hmacsha384, hmacsha512 } hmac;
 781         unsigned int type;
 782         isc_uint16_t size;
 783 } algorithms[] = {
 784         { "hmac-md5", hmacmd5, DST_ALG_HMACMD5, 128 },
 785         { "hmac-md5.sig-alg.reg.int", hmacmd5, DST_ALG_HMACMD5, 0 },
 786         { "hmac-md5.sig-alg.reg.int.", hmacmd5, DST_ALG_HMACMD5, 0 },
 787         { "hmac-sha1", hmacsha1, DST_ALG_HMACSHA1, 160 },
 788         { "hmac-sha224", hmacsha224, DST_ALG_HMACSHA224, 224 },
 789         { "hmac-sha256", hmacsha256, DST_ALG_HMACSHA256, 256 },
 790         { "hmac-sha384", hmacsha384, DST_ALG_HMACSHA384, 384 },
 791         { "hmac-sha512", hmacsha512, DST_ALG_HMACSHA512, 512 },
 792         {  NULL, hmacnone, DST_ALG_UNKNOWN, 0 }
 793 };
 794
 795 isc_result_t
 796 ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
 797                           isc_uint16_t *digestbits)
 798 {
 799         return (ns_config_getkeyalgorithm2(str, name, NULL, digestbits));
 800 }
 801
 802 isc_result_t
 803 ns_config_getkeyalgorithm2(const char *str, dns_name_t **name,
 804                            unsigned int *typep, isc_uint16_t *digestbits)
 805 {
 806         int i;
 807         size_t len = 0;
 808         isc_uint16_t bits;
 809         isc_result_t result;
 810
 811         for (i = 0; algorithms[i].str != NULL; i++) {
 812                 len = strlen(algorithms[i].str);
 813                 if (strncasecmp(algorithms[i].str, str, len) == 0 &&
 814                     (str[len] == '\0' ||
 815                      (algorithms[i].size != 0 && str[len] == '-')))
 816                         break;
 817         }
 818         if (algorithms[i].str == NULL)
 819                 return (ISC_R_NOTFOUND);
 820         if (str[len] == '-') {
 821                 result = isc_parse_uint16(&bits, str + len + 1, 10);
 822                 if (result != ISC_R_SUCCESS)
 823                         return (result);
 824                 if (bits > algorithms[i].size)
 825                         return (ISC_R_RANGE);
 826         } else if (algorithms[i].size == 0)
 827                 bits = 128;
 828         else
 829                 bits = algorithms[i].size;
 830
 831         if (name != NULL) {
 832                 switch (algorithms[i].hmac) {
 833                 case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
 834                 case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
 835                 case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
 836                 case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
 837                 case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
 838                 case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
 839                 default:
 840                         INSIST(0);
 841                 }
 842         }
 843         if (typep != NULL)
 844                 *typep = algorithms[i].type;
 845         if (digestbits != NULL)
 846                 *digestbits = bits;
 847         return (ISC_R_SUCCESS);
 848 }