2 * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2001-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and 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.
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.
18 /* $Id: config.c,v 1.11.2.4.8.29 2004/10/05 02:52:26 marka Exp $ */
25 #include <isc/buffer.h>
28 #include <isc/region.h>
29 #include <isc/result.h>
30 #include <isc/sockaddr.h>
33 #include <isccfg/namedconf.h>
35 #include <dns/fixedname.h>
37 #include <dns/rdataclass.h>
38 #include <dns/rdatatype.h>
42 #include <named/config.h>
43 #include <named/globals.h>
45 static char defaultconf[] = "\
47 # blackhole {none;};\n"
49 " coresize default;\n\
54 " deallocate-on-exit true;\n\
56 dump-file \"named_dump.db\";\n\
58 has-old-clients false;\n\
59 heartbeat-interval 60;\n\
60 host-statistics no;\n\
61 interface-interval 60;\n\
63 listen-on-v6 {none;};\n\
64 match-mapped-addresses no;\n\
65 memstatistics-file \"named.memstats\";\n\
66 multiple-cnames no;\n\
67 # named-xfer <obsolete>;\n\
68 # pid-file \"" NS_LOCALSTATEDIR "/named.pid\"; /* or /lwresd.pid */\n\
70 recursing-file \"named.recursing\";\n\
74 random-device \"" PATH_RANDOMDEV "\";\n\
78 recursive-clients 1000;\n\
79 rrset-order {order cyclic;};\n\
81 serial-query-rate 20;\n\
83 statistics-file \"named.stats\";\n\
84 statistics-interval 60;\n\
86 tcp-listen-queue 3;\n\
87 # tkey-dhkey <none>\n\
88 # tkey-gssapi-credential <none>\n\
89 # tkey-domain <none>\n\
90 transfers-per-ns 2;\n\
93 treat-cr-as-space true;\n\
96 edns-udp-size 4096;\n\
99 allow-notify {none;};\n\
100 allow-update-forwarding {none;};\n\
101 allow-recursion {any;};\n\
102 # allow-v6-synthesis <obsolete>;\n\
105 auth-nxdomain false;\n\
106 minimal-responses false;\n\
108 provide-ixfr true;\n\
109 request-ixfr true;\n\
112 additional-from-auth true;\n\
113 additional-from-cache true;\n\
114 query-source address *;\n\
115 query-source-v6 address *;\n\
117 notify-source-v6 *;\n\
118 cleaning-interval 60;\n\
121 max-ncache-ttl 10800; /* 3 hours */\n\
122 max-cache-ttl 604800; /* 1 week */\n\
123 transfer-format many-answers;\n\
125 check-names master fail;\n\
126 check-names slave warn;\n\
127 check-names response ignore;\n\
128 dnssec-enable no; /* Make yes for 9.4. */ \n\
132 allow-query {any;};\n\
133 allow-transfer {any;};\n\
135 # also-notify <none>\n\
138 # forwarders <none>\n\
139 maintain-ixfr-base no;\n\
140 # max-ixfr-log-size <obsolete>\n\
141 transfer-source *;\n\
142 transfer-source-v6 *;\n\
143 alt-transfer-source *;\n\
144 alt-transfer-source-v6 *;\n\
145 max-transfer-time-in 120;\n\
146 max-transfer-time-out 120;\n\
147 max-transfer-idle-in 60;\n\
148 max-transfer-idle-out 60;\n\
149 max-retry-time 1209600; /* 2 weeks */\n\
150 min-retry-time 500;\n\
151 max-refresh-time 2419200; /* 4 weeks */\n\
152 min-refresh-time 300;\n\
154 sig-validity-interval 30; /* days */\n\
155 zone-statistics false;\n\
156 max-journal-size unlimited;\n\
157 ixfr-from-differences false;\n\
162 # Zones in the \"_bind\" view are NOT counted is the count of zones.\n\
164 view \"_bind\" chaos {\n\
168 zone \"version.bind\" chaos {\n\
170 database \"_builtin version\";\n\
173 zone \"hostname.bind\" chaos {\n\
175 database \"_builtin hostname\";\n\
178 zone \"authors.bind\" chaos {\n\
180 database \"_builtin authors\";\n\
182 zone \"id.server\" chaos {\n\
184 database \"_builtin id\";\n\
190 ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
193 isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
194 isc_buffer_add(&b, sizeof(defaultconf) - 1);
195 return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
199 ns_config_get(cfg_obj_t **maps, const char *name, cfg_obj_t **obj) {
204 return (ISC_R_NOTFOUND);
205 if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
206 return (ISC_R_SUCCESS);
211 ns_checknames_get(cfg_obj_t **maps, const char *which, cfg_obj_t **obj) {
212 cfg_listelt_t *element;
213 cfg_obj_t *checknames;
220 return (ISC_R_NOTFOUND);
222 if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
224 * Zone map entry is not a list.
226 if (checknames != NULL && !cfg_obj_islist(checknames)) {
228 return (ISC_R_SUCCESS);
230 for (element = cfg_list_first(checknames);
232 element = cfg_list_next(element)) {
233 value = cfg_listelt_value(element);
234 type = cfg_tuple_get(value, "type");
235 if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
236 *obj = cfg_tuple_get(value, "mode");
237 return (ISC_R_SUCCESS);
246 ns_config_listcount(cfg_obj_t *list) {
250 for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
257 ns_config_getclass(cfg_obj_t *classobj, dns_rdataclass_t defclass,
258 dns_rdataclass_t *classp) {
263 if (!cfg_obj_isstring(classobj)) {
265 return (ISC_R_SUCCESS);
267 str = cfg_obj_asstring(classobj);
269 r.length = strlen(str);
270 result = dns_rdataclass_fromtext(classp, &r);
271 if (result != ISC_R_SUCCESS)
272 cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
273 "unknown class '%s'", str);
278 ns_config_gettype(cfg_obj_t *typeobj, dns_rdatatype_t deftype,
279 dns_rdatatype_t *typep) {
284 if (!cfg_obj_isstring(typeobj)) {
286 return (ISC_R_SUCCESS);
288 str = cfg_obj_asstring(typeobj);
290 r.length = strlen(str);
291 result = dns_rdatatype_fromtext(typep, &r);
292 if (result != ISC_R_SUCCESS)
293 cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
294 "unknown type '%s'", str);
299 ns_config_getzonetype(cfg_obj_t *zonetypeobj) {
300 dns_zonetype_t ztype = dns_zone_none;
303 str = cfg_obj_asstring(zonetypeobj);
304 if (strcasecmp(str, "master") == 0)
305 ztype = dns_zone_master;
306 else if (strcasecmp(str, "slave") == 0)
307 ztype = dns_zone_slave;
308 else if (strcasecmp(str, "stub") == 0)
309 ztype = dns_zone_stub;
316 ns_config_getiplist(cfg_obj_t *config, cfg_obj_t *list,
317 in_port_t defport, isc_mem_t *mctx,
318 isc_sockaddr_t **addrsp, isc_uint32_t *countp)
323 cfg_listelt_t *element;
324 isc_sockaddr_t *addrs;
328 INSIST(addrsp != NULL && *addrsp == NULL);
329 INSIST(countp != NULL);
331 addrlist = cfg_tuple_get(list, "addresses");
332 count = ns_config_listcount(addrlist);
334 portobj = cfg_tuple_get(list, "port");
335 if (cfg_obj_isuint32(portobj)) {
336 isc_uint32_t val = cfg_obj_asuint32(portobj);
337 if (val > ISC_UINT16_MAX) {
338 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
339 "port '%u' out of range", val);
340 return (ISC_R_RANGE);
342 port = (in_port_t) val;
343 } else if (defport != 0)
346 result = ns_config_getport(config, &port);
347 if (result != ISC_R_SUCCESS)
351 addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
353 return (ISC_R_NOMEMORY);
355 for (element = cfg_list_first(addrlist);
357 element = cfg_list_next(element), i++)
360 addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
361 if (isc_sockaddr_getport(&addrs[i]) == 0)
362 isc_sockaddr_setport(&addrs[i], port);
369 return (ISC_R_SUCCESS);
373 ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
376 INSIST(addrsp != NULL && *addrsp != NULL);
378 isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
383 get_masters_def(cfg_obj_t *cctx, char *name, cfg_obj_t **ret) {
385 cfg_obj_t *masters = NULL;
388 result = cfg_map_get(cctx, "masters", &masters);
389 if (result != ISC_R_SUCCESS)
391 for (elt = cfg_list_first(masters);
393 elt = cfg_list_next(elt)) {
395 const char *listname;
397 list = cfg_listelt_value(elt);
398 listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
400 if (strcasecmp(listname, name) == 0) {
402 return (ISC_R_SUCCESS);
405 return (ISC_R_NOTFOUND);
409 ns_config_getipandkeylist(cfg_obj_t *config, cfg_obj_t *list, isc_mem_t *mctx,
410 isc_sockaddr_t **addrsp, dns_name_t ***keysp,
411 isc_uint32_t *countp)
413 isc_uint32_t addrcount = 0, keycount = 0, i = 0;
414 isc_uint32_t listcount = 0, l = 0, j;
415 isc_uint32_t stackcount = 0, pushed = 0;
417 cfg_listelt_t *element;
421 dns_fixedname_t fname;
422 isc_sockaddr_t *addrs = NULL;
423 dns_name_t **keys = NULL;
426 cfg_listelt_t *element;
430 REQUIRE(addrsp != NULL && *addrsp == NULL);
431 REQUIRE(keysp != NULL && *keysp == NULL);
432 REQUIRE(countp != NULL);
435 addrlist = cfg_tuple_get(list, "addresses");
436 portobj = cfg_tuple_get(list, "port");
437 if (cfg_obj_isuint32(portobj)) {
438 isc_uint32_t val = cfg_obj_asuint32(portobj);
439 if (val > ISC_UINT16_MAX) {
440 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
441 "port '%u' out of range", val);
442 return (ISC_R_RANGE);
444 port = (in_port_t) val;
446 result = ns_config_getport(config, &port);
447 if (result != ISC_R_SUCCESS)
451 result = ISC_R_NOMEMORY;
453 element = cfg_list_first(addrlist);
457 element = cfg_list_next(element))
464 addr = cfg_tuple_get(cfg_listelt_value(element),
466 key = cfg_tuple_get(cfg_listelt_value(element), "key");
468 if (!cfg_obj_issockaddr(addr)) {
469 char *listname = cfg_obj_asstring(addr);
470 isc_result_t tresult;
473 if (listcount == l) {
475 isc_uint32_t newlen = listcount + 16;
476 size_t newsize, oldsize;
478 newsize = newlen * sizeof(*lists);
479 oldsize = listcount * sizeof(*lists);
480 new = isc_mem_get(mctx, newsize);
483 if (listcount != 0) {
484 memcpy(new, lists, oldsize);
485 isc_mem_put(mctx, lists, oldsize);
491 for (j = 0; j < l; j++)
492 if (strcasecmp(lists[j], listname) == 0)
496 tresult = get_masters_def(config, listname, &list);
497 if (tresult == ISC_R_NOTFOUND) {
498 cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
499 "masters \"%s\" not found", listname);
504 if (tresult != ISC_R_SUCCESS)
506 lists[l++] = listname;
508 if (stackcount == pushed) {
510 isc_uint32_t newlen = stackcount + 16;
511 size_t newsize, oldsize;
513 newsize = newlen * sizeof(*stack);
514 oldsize = stackcount * sizeof(*stack);
515 new = isc_mem_get(mctx, newsize);
518 if (stackcount != 0) {
519 memcpy(new, stack, oldsize);
520 isc_mem_put(mctx, stack, oldsize);
526 * We want to resume processing this list on the
529 stack[pushed].element = cfg_list_next(element);
530 stack[pushed].port = port;
535 if (i == addrcount) {
537 isc_uint32_t newlen = addrcount + 16;
538 size_t newsize, oldsize;
540 newsize = newlen * sizeof(isc_sockaddr_t);
541 oldsize = addrcount * sizeof(isc_sockaddr_t);
542 new = isc_mem_get(mctx, newsize);
545 if (addrcount != 0) {
546 memcpy(new, addrs, oldsize);
547 isc_mem_put(mctx, addrs, oldsize);
552 newsize = newlen * sizeof(dns_name_t *);
553 oldsize = keycount * sizeof(dns_name_t *);
554 new = isc_mem_get(mctx, newsize);
558 memcpy(new, keys, oldsize);
559 isc_mem_put(mctx, keys, oldsize);
565 addrs[i] = *cfg_obj_assockaddr(addr);
566 if (isc_sockaddr_getport(&addrs[i]) == 0)
567 isc_sockaddr_setport(&addrs[i], port);
569 if (!cfg_obj_isstring(key)) {
573 keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
576 dns_name_init(keys[i], NULL);
578 keystr = cfg_obj_asstring(key);
579 isc_buffer_init(&b, keystr, strlen(keystr));
580 isc_buffer_add(&b, strlen(keystr));
581 dns_fixedname_init(&fname);
582 result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
583 dns_rootname, ISC_FALSE, NULL);
584 if (result != ISC_R_SUCCESS)
586 result = dns_name_dup(dns_fixedname_name(&fname), mctx,
588 if (result != ISC_R_SUCCESS)
594 element = stack[pushed].element;
595 port = stack[pushed].port;
600 size_t newsize, oldsize;
602 newsize = i * sizeof(isc_sockaddr_t);
603 oldsize = addrcount * sizeof(isc_sockaddr_t);
605 new = isc_mem_get(mctx, newsize);
608 memcpy(new, addrs, newsize);
609 isc_mem_put(mctx, addrs, oldsize);
615 newsize = i * sizeof(dns_name_t *);
616 oldsize = keycount * sizeof(dns_name_t *);
618 new = isc_mem_get(mctx, newsize);
621 memcpy(new, keys, newsize);
622 isc_mem_put(mctx, keys, oldsize);
630 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
632 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
634 INSIST(keycount == addrcount);
640 return (ISC_R_SUCCESS);
644 isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
646 for (j = 0; j <= i; j++) {
649 if (dns_name_dynamic(keys[j]))
650 dns_name_free(keys[j], mctx);
651 isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
653 isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
656 isc_mem_put(mctx, lists, listcount * sizeof(*lists));
658 isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
663 ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
664 dns_name_t ***keysp, isc_uint32_t count)
667 dns_name_t **keys = *keysp;
669 INSIST(addrsp != NULL && *addrsp != NULL);
671 isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
672 for (i = 0; i < count; i++) {
675 if (dns_name_dynamic(keys[i]))
676 dns_name_free(keys[i], mctx);
677 isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
679 isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
685 ns_config_getport(cfg_obj_t *config, in_port_t *portp) {
687 cfg_obj_t *options = NULL;
688 cfg_obj_t *portobj = NULL;
692 (void)cfg_map_get(config, "options", &options);
696 maps[i++] = ns_g_defaults;
699 result = ns_config_get(maps, "port", &portobj);
700 INSIST(result == ISC_R_SUCCESS);
701 if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
702 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
703 "port '%u' out of range",
704 cfg_obj_asuint32(portobj));
705 return (ISC_R_RANGE);
707 *portp = (in_port_t)cfg_obj_asuint32(portobj);
708 return (ISC_R_SUCCESS);
712 ns_config_getkeyalgorithm(const char *str, dns_name_t **name)
714 if (strcasecmp(str, "hmac-md5") == 0 ||
715 strcasecmp(str, "hmac-md5.sig-alg.reg.int") == 0 ||
716 strcasecmp(str, "hmac-md5.sig-alg.reg.int.") == 0)
719 *name = dns_tsig_hmacmd5_name;
720 return (ISC_R_SUCCESS);
722 return (ISC_R_NOTFOUND);