2 * Copyright (C) 2004-2006 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2003 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: server.c,v 1.339.2.15.2.70 2006/05/24 04:30:24 marka Exp $ */
25 #include <isc/base64.h>
27 #include <isc/entropy.h>
31 #include <isc/parseint.h>
32 #include <isc/print.h>
33 #include <isc/resource.h>
34 #include <isc/stdio.h>
35 #include <isc/string.h>
37 #include <isc/timer.h>
40 #include <isccfg/namedconf.h>
42 #include <bind9/check.h>
45 #include <dns/cache.h>
47 #include <dns/dispatch.h>
48 #include <dns/forward.h>
49 #include <dns/journal.h>
50 #include <dns/keytable.h>
51 #include <dns/master.h>
52 #include <dns/masterdump.h>
53 #include <dns/order.h>
55 #include <dns/portlist.h>
56 #include <dns/rdataclass.h>
57 #include <dns/rdataset.h>
58 #include <dns/rdatastruct.h>
59 #include <dns/resolver.h>
60 #include <dns/rootns.h>
61 #include <dns/secalg.h>
62 #include <dns/stats.h>
69 #include <dst/result.h>
71 #include <named/client.h>
72 #include <named/config.h>
73 #include <named/control.h>
74 #include <named/interfacemgr.h>
75 #include <named/log.h>
76 #include <named/logconf.h>
77 #include <named/lwresd.h>
78 #include <named/main.h>
80 #include <named/server.h>
81 #include <named/tkeyconf.h>
82 #include <named/tsigconf.h>
83 #include <named/zoneconf.h>
85 #include <named/ns_smf_globals.h>
90 * Check an operation for failure. Assumes that the function
91 * using it has a 'result' variable and a 'cleanup' label.
95 if (result != ISC_R_SUCCESS) goto cleanup; \
98 #define CHECKM(op, msg) \
100 if (result != ISC_R_SUCCESS) { \
101 isc_log_write(ns_g_lctx, \
102 NS_LOGCATEGORY_GENERAL, \
103 NS_LOGMODULE_SERVER, \
106 isc_result_totext(result)); \
111 #define CHECKMF(op, msg, file) \
112 do { result = (op); \
113 if (result != ISC_R_SUCCESS) { \
114 isc_log_write(ns_g_lctx, \
115 NS_LOGCATEGORY_GENERAL, \
116 NS_LOGMODULE_SERVER, \
118 "%s '%s': %s", msg, file, \
119 isc_result_totext(result)); \
124 #define CHECKFATAL(op, msg) \
125 do { result = (op); \
126 if (result != ISC_R_SUCCESS) \
127 fatal(msg, result); \
132 unsigned int dispatchgen;
133 dns_dispatch_t *dispatch;
134 ISC_LINK(struct ns_dispatch) link;
139 isc_boolean_t dumpcache;
140 isc_boolean_t dumpzones;
142 ISC_LIST(struct viewlistentry) viewlist;
143 struct viewlistentry *view;
144 struct zonelistentry *zone;
145 dns_dumpctx_t *mdctx;
149 dns_dbversion_t *version;
152 struct viewlistentry {
154 ISC_LINK(struct viewlistentry) link;
155 ISC_LIST(struct zonelistentry) zonelist;
158 struct zonelistentry {
160 ISC_LINK(struct zonelistentry) link;
164 fatal(const char *msg, isc_result_t result);
167 ns_server_reload(isc_task_t *task, isc_event_t *event);
170 ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
171 ns_aclconfctx_t *actx,
172 isc_mem_t *mctx, ns_listenelt_t **target);
174 ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
175 ns_aclconfctx_t *actx,
176 isc_mem_t *mctx, ns_listenlist_t **target);
179 configure_forward(const cfg_obj_t *config, dns_view_t *view, dns_name_t *origin,
180 const cfg_obj_t *forwarders, const cfg_obj_t *forwardtype);
183 configure_alternates(const cfg_obj_t *config, dns_view_t *view,
184 const cfg_obj_t *alternates);
187 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
188 const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
189 ns_aclconfctx_t *aclconf);
192 end_reserved_dispatches(ns_server_t *server, isc_boolean_t all);
195 * Configure a single view ACL at '*aclp'. Get its configuration by
196 * calling 'getvcacl' (for per-view configuration) and maybe 'getscacl'
197 * (for a global default).
200 configure_view_acl(const cfg_obj_t *vconfig, const cfg_obj_t *config,
201 const char *aclname, ns_aclconfctx_t *actx,
202 isc_mem_t *mctx, dns_acl_t **aclp)
205 const cfg_obj_t *maps[3];
206 const cfg_obj_t *aclobj = NULL;
210 dns_acl_detach(aclp);
212 maps[i++] = cfg_tuple_get(vconfig, "options");
213 if (config != NULL) {
214 const cfg_obj_t *options = NULL;
215 (void)cfg_map_get(config, "options", &options);
221 (void)ns_config_get(maps, aclname, &aclobj);
224 * No value available. *aclp == NULL.
226 return (ISC_R_SUCCESS);
228 result = ns_acl_fromconfig(aclobj, config, actx, mctx, aclp);
234 configure_view_dnsseckey(const cfg_obj_t *vconfig, const cfg_obj_t *key,
235 dns_keytable_t *keytable, isc_mem_t *mctx)
237 dns_rdataclass_t viewclass;
238 dns_rdata_dnskey_t keystruct;
239 isc_uint32_t flags, proto, alg;
240 const char *keystr, *keynamestr;
241 unsigned char keydata[4096];
242 isc_buffer_t keydatabuf;
243 unsigned char rrdata[4096];
244 isc_buffer_t rrdatabuf;
246 dns_fixedname_t fkeyname;
248 isc_buffer_t namebuf;
250 dst_key_t *dstkey = NULL;
252 flags = cfg_obj_asuint32(cfg_tuple_get(key, "flags"));
253 proto = cfg_obj_asuint32(cfg_tuple_get(key, "protocol"));
254 alg = cfg_obj_asuint32(cfg_tuple_get(key, "algorithm"));
255 keyname = dns_fixedname_name(&fkeyname);
256 keynamestr = cfg_obj_asstring(cfg_tuple_get(key, "name"));
259 viewclass = dns_rdataclass_in;
261 const cfg_obj_t *classobj = cfg_tuple_get(vconfig, "class");
262 CHECK(ns_config_getclass(classobj, dns_rdataclass_in,
265 keystruct.common.rdclass = viewclass;
266 keystruct.common.rdtype = dns_rdatatype_dnskey;
268 * The key data in keystruct is not dynamically allocated.
270 keystruct.mctx = NULL;
272 ISC_LINK_INIT(&keystruct.common, link);
275 CHECKM(ISC_R_RANGE, "key flags");
277 CHECKM(ISC_R_RANGE, "key protocol");
279 CHECKM(ISC_R_RANGE, "key algorithm");
280 keystruct.flags = (isc_uint16_t)flags;
281 keystruct.protocol = (isc_uint8_t)proto;
282 keystruct.algorithm = (isc_uint8_t)alg;
284 isc_buffer_init(&keydatabuf, keydata, sizeof(keydata));
285 isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
287 keystr = cfg_obj_asstring(cfg_tuple_get(key, "key"));
288 CHECK(isc_base64_decodestring(keystr, &keydatabuf));
289 isc_buffer_usedregion(&keydatabuf, &r);
290 keystruct.datalen = r.length;
291 keystruct.data = r.base;
293 CHECK(dns_rdata_fromstruct(NULL,
294 keystruct.common.rdclass,
295 keystruct.common.rdtype,
296 &keystruct, &rrdatabuf));
297 dns_fixedname_init(&fkeyname);
298 isc_buffer_init(&namebuf, keynamestr, strlen(keynamestr));
299 isc_buffer_add(&namebuf, strlen(keynamestr));
300 CHECK(dns_name_fromtext(keyname, &namebuf,
301 dns_rootname, ISC_FALSE,
303 CHECK(dst_key_fromdns(keyname, viewclass, &rrdatabuf,
306 CHECK(dns_keytable_add(keytable, &dstkey));
307 INSIST(dstkey == NULL);
308 return (ISC_R_SUCCESS);
311 if (result == DST_R_NOCRYPTO) {
312 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
313 "ignoring trusted key for '%s': no crypto support",
315 result = ISC_R_SUCCESS;
317 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
318 "configuring trusted key for '%s': %s",
319 keynamestr, isc_result_totext(result));
320 result = ISC_R_FAILURE;
324 dst_key_free(&dstkey);
330 * Configure DNSSEC keys for a view. Currently used only for
331 * the security roots.
333 * The per-view configuration values and the server-global defaults are read
334 * from 'vconfig' and 'config'. The variable to be configured is '*target'.
337 configure_view_dnsseckeys(const cfg_obj_t *vconfig, const cfg_obj_t *config,
338 isc_mem_t *mctx, dns_keytable_t **target)
341 const cfg_obj_t *keys = NULL;
342 const cfg_obj_t *voptions = NULL;
343 const cfg_listelt_t *element, *element2;
344 const cfg_obj_t *keylist;
345 const cfg_obj_t *key;
346 dns_keytable_t *keytable = NULL;
348 CHECK(dns_keytable_create(mctx, &keytable));
351 voptions = cfg_tuple_get(vconfig, "options");
354 if (voptions != NULL)
355 (void)cfg_map_get(voptions, "trusted-keys", &keys);
357 (void)cfg_map_get(config, "trusted-keys", &keys);
359 for (element = cfg_list_first(keys);
361 element = cfg_list_next(element))
363 keylist = cfg_listelt_value(element);
364 for (element2 = cfg_list_first(keylist);
366 element2 = cfg_list_next(element2))
368 key = cfg_listelt_value(element2);
369 CHECK(configure_view_dnsseckey(vconfig, key,
374 dns_keytable_detach(target);
375 *target = keytable; /* Transfer ownership. */
377 result = ISC_R_SUCCESS;
384 mustbesecure(const cfg_obj_t *mbs, dns_resolver_t *resolver)
386 const cfg_listelt_t *element;
387 const cfg_obj_t *obj;
389 dns_fixedname_t fixed;
395 dns_fixedname_init(&fixed);
396 name = dns_fixedname_name(&fixed);
397 for (element = cfg_list_first(mbs);
399 element = cfg_list_next(element))
401 obj = cfg_listelt_value(element);
402 str = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
403 isc_buffer_init(&b, str, strlen(str));
404 isc_buffer_add(&b, strlen(str));
405 CHECK(dns_name_fromtext(name, &b, dns_rootname,
407 value = cfg_obj_asboolean(cfg_tuple_get(obj, "value"));
408 CHECK(dns_resolver_setmustbesecure(resolver, name, value));
411 result = ISC_R_SUCCESS;
418 * Get a dispatch appropriate for the resolver of a given view.
421 get_view_querysource_dispatch(const cfg_obj_t **maps,
422 int af, dns_dispatch_t **dispatchp)
425 dns_dispatch_t *disp;
427 unsigned int attrs, attrmask;
428 const cfg_obj_t *obj = NULL;
431 * Make compiler happy.
433 result = ISC_R_FAILURE;
437 result = ns_config_get(maps, "query-source", &obj);
438 INSIST(result == ISC_R_SUCCESS);
441 result = ns_config_get(maps, "query-source-v6", &obj);
442 INSIST(result == ISC_R_SUCCESS);
448 sa = *(cfg_obj_assockaddr(obj));
449 INSIST(isc_sockaddr_pf(&sa) == af);
452 * If we don't support this address family, we're done!
456 result = isc_net_probeipv4();
459 result = isc_net_probeipv6();
464 if (result != ISC_R_SUCCESS)
465 return (ISC_R_SUCCESS);
468 * Try to find a dispatcher that we can share.
471 attrs |= DNS_DISPATCHATTR_UDP;
474 attrs |= DNS_DISPATCHATTR_IPV4;
477 attrs |= DNS_DISPATCHATTR_IPV6;
481 attrmask |= DNS_DISPATCHATTR_UDP;
482 attrmask |= DNS_DISPATCHATTR_TCP;
483 attrmask |= DNS_DISPATCHATTR_IPV4;
484 attrmask |= DNS_DISPATCHATTR_IPV6;
487 result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
488 ns_g_taskmgr, &sa, 4096,
489 1000, 32768, 16411, 16433,
490 attrs, attrmask, &disp);
491 if (result != ISC_R_SUCCESS) {
493 char buf[ISC_SOCKADDR_FORMATSIZE];
497 isc_sockaddr_any(&any);
500 isc_sockaddr_any6(&any);
503 if (isc_sockaddr_equal(&sa, &any))
504 return (ISC_R_SUCCESS);
505 isc_sockaddr_format(&sa, buf, sizeof(buf));
506 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
507 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
508 "could not get query source dispatcher (%s)",
515 return (ISC_R_SUCCESS);
519 configure_order(dns_order_t *order, const cfg_obj_t *ent) {
520 dns_rdataclass_t rdclass;
521 dns_rdatatype_t rdtype;
522 const cfg_obj_t *obj;
523 dns_fixedname_t fixed;
524 unsigned int mode = 0;
528 isc_boolean_t addroot;
530 result = ns_config_getclass(cfg_tuple_get(ent, "class"),
531 dns_rdataclass_any, &rdclass);
532 if (result != ISC_R_SUCCESS)
535 result = ns_config_gettype(cfg_tuple_get(ent, "type"),
536 dns_rdatatype_any, &rdtype);
537 if (result != ISC_R_SUCCESS)
540 obj = cfg_tuple_get(ent, "name");
541 if (cfg_obj_isstring(obj))
542 str = cfg_obj_asstring(obj);
545 addroot = ISC_TF(strcmp(str, "*") == 0);
546 isc_buffer_init(&b, str, strlen(str));
547 isc_buffer_add(&b, strlen(str));
548 dns_fixedname_init(&fixed);
549 result = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
550 dns_rootname, ISC_FALSE, NULL);
551 if (result != ISC_R_SUCCESS)
554 obj = cfg_tuple_get(ent, "ordering");
555 INSIST(cfg_obj_isstring(obj));
556 str = cfg_obj_asstring(obj);
557 if (!strcasecmp(str, "fixed"))
558 mode = DNS_RDATASETATTR_FIXEDORDER;
559 else if (!strcasecmp(str, "random"))
560 mode = DNS_RDATASETATTR_RANDOMIZE;
561 else if (!strcasecmp(str, "cyclic"))
567 * "*" should match everything including the root (BIND 8 compat).
568 * As dns_name_matcheswildcard(".", "*.") returns FALSE add a
569 * explicit entry for "." when the name is "*".
572 result = dns_order_add(order, dns_rootname,
573 rdtype, rdclass, mode);
574 if (result != ISC_R_SUCCESS)
578 return (dns_order_add(order, dns_fixedname_name(&fixed),
579 rdtype, rdclass, mode));
583 configure_peer(const cfg_obj_t *cpeer, isc_mem_t *mctx, dns_peer_t **peerp) {
584 const isc_sockaddr_t *sa;
587 const cfg_obj_t *obj;
591 sa = cfg_obj_assockaddr(cfg_map_getname(cpeer));
592 isc_netaddr_fromsockaddr(&na, sa);
595 result = dns_peer_new(mctx, &na, &peer);
596 if (result != ISC_R_SUCCESS)
600 (void)cfg_map_get(cpeer, "bogus", &obj);
602 CHECK(dns_peer_setbogus(peer, cfg_obj_asboolean(obj)));
605 (void)cfg_map_get(cpeer, "provide-ixfr", &obj);
607 CHECK(dns_peer_setprovideixfr(peer, cfg_obj_asboolean(obj)));
610 (void)cfg_map_get(cpeer, "request-ixfr", &obj);
612 CHECK(dns_peer_setrequestixfr(peer, cfg_obj_asboolean(obj)));
615 (void)cfg_map_get(cpeer, "edns", &obj);
617 CHECK(dns_peer_setsupportedns(peer, cfg_obj_asboolean(obj)));
620 (void)cfg_map_get(cpeer, "transfers", &obj);
622 CHECK(dns_peer_settransfers(peer, cfg_obj_asuint32(obj)));
625 (void)cfg_map_get(cpeer, "transfer-format", &obj);
627 str = cfg_obj_asstring(obj);
628 if (strcasecmp(str, "many-answers") == 0)
629 CHECK(dns_peer_settransferformat(peer,
631 else if (strcasecmp(str, "one-answer") == 0)
632 CHECK(dns_peer_settransferformat(peer,
639 (void)cfg_map_get(cpeer, "keys", &obj);
641 result = dns_peer_setkeybycharp(peer, cfg_obj_asstring(obj));
642 if (result != ISC_R_SUCCESS)
647 if (isc_sockaddr_pf(sa) == AF_INET)
648 (void)cfg_map_get(cpeer, "transfer-source", &obj);
650 (void)cfg_map_get(cpeer, "transfer-source-v6", &obj);
652 result = dns_peer_settransfersource(peer,
653 cfg_obj_assockaddr(obj));
654 if (result != ISC_R_SUCCESS)
658 return (ISC_R_SUCCESS);
661 dns_peer_detach(&peer);
666 disable_algorithms(const cfg_obj_t *disabled, dns_resolver_t *resolver) {
668 const cfg_obj_t *algorithms;
669 const cfg_listelt_t *element;
671 dns_fixedname_t fixed;
675 dns_fixedname_init(&fixed);
676 name = dns_fixedname_name(&fixed);
677 str = cfg_obj_asstring(cfg_tuple_get(disabled, "name"));
678 isc_buffer_init(&b, str, strlen(str));
679 isc_buffer_add(&b, strlen(str));
680 CHECK(dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL));
682 algorithms = cfg_tuple_get(disabled, "algorithms");
683 for (element = cfg_list_first(algorithms);
685 element = cfg_list_next(element))
690 DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base);
691 r.length = strlen(r.base);
693 result = dns_secalg_fromtext(&alg, &r);
694 if (result != ISC_R_SUCCESS) {
696 result = isc_parse_uint8(&ui, r.base, 10);
699 if (result != ISC_R_SUCCESS) {
700 cfg_obj_log(cfg_listelt_value(element),
701 ns_g_lctx, ISC_LOG_ERROR,
702 "invalid algorithm");
705 CHECK(dns_resolver_disable_algorithm(resolver, name, alg));
712 * Configure 'view' according to 'vconfig', taking defaults from 'config'
713 * where values are missing in 'vconfig'.
715 * When configuring the default view, 'vconfig' will be NULL and the
716 * global defaults in 'config' used exclusively.
719 configure_view(dns_view_t *view, const cfg_obj_t *config,
720 const cfg_obj_t *vconfig, isc_mem_t *mctx, ns_aclconfctx_t *actx,
721 isc_boolean_t need_hints)
723 const cfg_obj_t *maps[4];
724 const cfg_obj_t *cfgmaps[3];
725 const cfg_obj_t *options = NULL;
726 const cfg_obj_t *voptions = NULL;
727 const cfg_obj_t *forwardtype;
728 const cfg_obj_t *forwarders;
729 const cfg_obj_t *alternates;
730 const cfg_obj_t *zonelist;
731 const cfg_obj_t *disabled;
732 const cfg_obj_t *obj;
733 const cfg_listelt_t *element;
735 dns_cache_t *cache = NULL;
737 isc_uint32_t max_adb_size;
738 isc_uint32_t max_cache_size;
739 isc_uint32_t lame_ttl;
740 dns_tsig_keyring_t *ring;
741 dns_view_t *pview = NULL; /* Production view */
743 dns_dispatch_t *dispatch4 = NULL;
744 dns_dispatch_t *dispatch6 = NULL;
745 isc_boolean_t reused_cache = ISC_FALSE;
748 dns_order_t *order = NULL;
749 isc_uint32_t udpsize;
750 unsigned int check = 0;
752 REQUIRE(DNS_VIEW_VALID(view));
757 (void)cfg_map_get(config, "options", &options);
760 if (vconfig != NULL) {
761 voptions = cfg_tuple_get(vconfig, "options");
762 maps[i++] = voptions;
766 maps[i++] = ns_g_defaults;
770 if (voptions != NULL)
771 cfgmaps[i++] = voptions;
773 cfgmaps[i++] = config;
777 * Set the view's port number for outgoing queries.
779 CHECKM(ns_config_getport(config, &port), "port");
780 dns_view_setdstport(view, port);
783 * Configure the zones.
786 if (voptions != NULL)
787 (void)cfg_map_get(voptions, "zone", &zonelist);
789 (void)cfg_map_get(config, "zone", &zonelist);
790 for (element = cfg_list_first(zonelist);
792 element = cfg_list_next(element))
794 const cfg_obj_t *zconfig = cfg_listelt_value(element);
795 CHECK(configure_zone(config, zconfig, vconfig, mctx, view,
800 * Configure the view's cache. Try to reuse an existing
801 * cache if possible, otherwise create a new cache.
802 * Note that the ADB is not preserved in either case.
804 * XXX Determining when it is safe to reuse a cache is
805 * tricky. When the view's configuration changes, the cached
806 * data may become invalid because it reflects our old
807 * view of the world. As more view attributes become
808 * configurable, we will have to add code here to check
809 * whether they have changed in ways that could
810 * invalidate the cache.
812 result = dns_viewlist_find(&ns_g_server->viewlist,
813 view->name, view->rdclass,
815 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
818 INSIST(pview->cache != NULL);
819 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
820 NS_LOGMODULE_SERVER, ISC_LOG_DEBUG(3),
821 "reusing existing cache");
822 reused_cache = ISC_TRUE;
823 dns_cache_attach(pview->cache, &cache);
824 dns_view_detach(&pview);
826 CHECK(isc_mem_create(0, 0, &cmctx));
827 CHECK(dns_cache_create(cmctx, ns_g_taskmgr, ns_g_timermgr,
828 view->rdclass, "rbt", 0, NULL, &cache));
830 dns_view_setcache(view, cache);
833 * cache-file cannot be inherited if views are present, but this
834 * should be caught by the configuration checking stage.
837 result = ns_config_get(maps, "cache-file", &obj);
838 if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind") != 0) {
839 CHECK(dns_cache_setfilename(cache, cfg_obj_asstring(obj)));
841 CHECK(dns_cache_load(cache));
845 result = ns_config_get(maps, "cleaning-interval", &obj);
846 INSIST(result == ISC_R_SUCCESS);
847 dns_cache_setcleaninginterval(cache, cfg_obj_asuint32(obj) * 60);
850 result = ns_config_get(maps, "max-cache-size", &obj);
851 INSIST(result == ISC_R_SUCCESS);
852 if (cfg_obj_isstring(obj)) {
853 str = cfg_obj_asstring(obj);
854 INSIST(strcasecmp(str, "unlimited") == 0);
855 max_cache_size = ISC_UINT32_MAX;
857 isc_resourcevalue_t value;
858 value = cfg_obj_asuint64(obj);
859 if (value > ISC_UINT32_MAX) {
860 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
862 "%" ISC_PRINT_QUADFORMAT "d' is too large",
864 result = ISC_R_RANGE;
867 max_cache_size = (isc_uint32_t)value;
869 dns_cache_setcachesize(cache, max_cache_size);
871 dns_cache_detach(&cache);
877 result = ns_checknames_get(maps, "response", &obj);
878 INSIST(result == ISC_R_SUCCESS);
880 str = cfg_obj_asstring(obj);
881 if (strcasecmp(str, "fail") == 0) {
882 check = DNS_RESOLVER_CHECKNAMES |
883 DNS_RESOLVER_CHECKNAMESFAIL;
884 view->checknames = ISC_TRUE;
885 } else if (strcasecmp(str, "warn") == 0) {
886 check = DNS_RESOLVER_CHECKNAMES;
887 view->checknames = ISC_FALSE;
888 } else if (strcasecmp(str, "ignore") == 0) {
890 view->checknames = ISC_FALSE;
897 * XXXRTH Hardwired number of tasks.
899 CHECK(get_view_querysource_dispatch(maps, AF_INET, &dispatch4));
900 CHECK(get_view_querysource_dispatch(maps, AF_INET6, &dispatch6));
901 if (dispatch4 == NULL && dispatch6 == NULL) {
902 UNEXPECTED_ERROR(__FILE__, __LINE__,
903 "unable to obtain neither an IPv4 nor"
904 " an IPv6 dispatch");
905 result = ISC_R_UNEXPECTED;
908 CHECK(dns_view_createresolver(view, ns_g_taskmgr, 31,
909 ns_g_socketmgr, ns_g_timermgr,
910 check, ns_g_dispatchmgr,
911 dispatch4, dispatch6));
914 * Set the ADB cache size to 1/8th of the max-cache-size.
917 if (max_cache_size != 0) {
918 max_adb_size = max_cache_size / 8;
919 if (max_adb_size == 0)
920 max_adb_size = 1; /* Force minimum. */
922 dns_adb_setadbsize(view->adb, max_adb_size);
925 * Set resolver's lame-ttl.
928 result = ns_config_get(maps, "lame-ttl", &obj);
929 INSIST(result == ISC_R_SUCCESS);
930 lame_ttl = cfg_obj_asuint32(obj);
933 dns_resolver_setlamettl(view->resolver, lame_ttl);
936 * Set the resolver's EDNS UDP size.
939 result = ns_config_get(maps, "edns-udp-size", &obj);
940 INSIST(result == ISC_R_SUCCESS);
941 udpsize = cfg_obj_asuint32(obj);
946 dns_resolver_setudpsize(view->resolver, (isc_uint16_t)udpsize);
949 * Set supported DNSSEC algorithms.
951 dns_resolver_reset_algorithms(view->resolver);
953 (void)ns_config_get(maps, "disable-algorithms", &disabled);
954 if (disabled != NULL) {
955 for (element = cfg_list_first(disabled);
957 element = cfg_list_next(element))
958 CHECK(disable_algorithms(cfg_listelt_value(element),
963 * A global or view "forwarders" option, if present,
964 * creates an entry for "." in the forwarding table.
968 (void)ns_config_get(maps, "forward", &forwardtype);
969 (void)ns_config_get(maps, "forwarders", &forwarders);
970 if (forwarders != NULL)
971 CHECK(configure_forward(config, view, dns_rootname,
972 forwarders, forwardtype));
975 * Dual Stack Servers.
978 (void)ns_config_get(maps, "dual-stack-servers", &alternates);
979 if (alternates != NULL)
980 CHECK(configure_alternates(config, view, alternates));
983 * We have default hints for class IN if we need them.
985 if (view->rdclass == dns_rdataclass_in && view->hints == NULL)
986 dns_view_sethints(view, ns_g_server->in_roothints);
989 * If we still have no hints, this is a non-IN view with no
990 * "hints zone" configured. Issue a warning, except if this
991 * is a root server. Root servers never need to consult
992 * their hints, so it's no point requiring users to configure
995 if (view->hints == NULL) {
996 dns_zone_t *rootzone = NULL;
997 (void)dns_view_findzone(view, dns_rootname, &rootzone);
998 if (rootzone != NULL) {
999 dns_zone_detach(&rootzone);
1000 need_hints = ISC_FALSE;
1003 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1004 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
1005 "no root hints for view '%s'",
1010 * Configure the view's TSIG keys.
1013 CHECK(ns_tsigkeyring_fromconfig(config, vconfig, view->mctx, &ring));
1014 dns_view_setkeyring(view, ring);
1017 * Configure the view's peer list.
1020 const cfg_obj_t *peers = NULL;
1021 const cfg_listelt_t *element;
1022 dns_peerlist_t *newpeers = NULL;
1024 (void)ns_config_get(cfgmaps, "server", &peers);
1025 CHECK(dns_peerlist_new(mctx, &newpeers));
1026 for (element = cfg_list_first(peers);
1028 element = cfg_list_next(element))
1030 const cfg_obj_t *cpeer = cfg_listelt_value(element);
1033 CHECK(configure_peer(cpeer, mctx, &peer));
1034 dns_peerlist_addpeer(newpeers, peer);
1035 dns_peer_detach(&peer);
1037 dns_peerlist_detach(&view->peers);
1038 view->peers = newpeers; /* Transfer ownership. */
1042 * Configure the views rrset-order.
1045 const cfg_obj_t *rrsetorder = NULL;
1046 const cfg_listelt_t *element;
1048 (void)ns_config_get(maps, "rrset-order", &rrsetorder);
1049 CHECK(dns_order_create(mctx, &order));
1050 for (element = cfg_list_first(rrsetorder);
1052 element = cfg_list_next(element))
1054 const cfg_obj_t *ent = cfg_listelt_value(element);
1056 CHECK(configure_order(order, ent));
1058 if (view->order != NULL)
1059 dns_order_detach(&view->order);
1060 dns_order_attach(order, &view->order);
1061 dns_order_detach(&order);
1064 * Copy the aclenv object.
1066 dns_aclenv_copy(&view->aclenv, &ns_g_server->aclenv);
1069 * Configure the "match-clients" and "match-destinations" ACL.
1071 CHECK(configure_view_acl(vconfig, config, "match-clients", actx,
1072 ns_g_mctx, &view->matchclients));
1073 CHECK(configure_view_acl(vconfig, config, "match-destinations", actx,
1074 ns_g_mctx, &view->matchdestinations));
1077 * Configure the "match-recursive-only" option.
1080 (void)ns_config_get(maps, "match-recursive-only", &obj);
1081 if (obj != NULL && cfg_obj_asboolean(obj))
1082 view->matchrecursiveonly = ISC_TRUE;
1084 view->matchrecursiveonly = ISC_FALSE;
1087 * Configure other configurable data.
1090 result = ns_config_get(maps, "recursion", &obj);
1091 INSIST(result == ISC_R_SUCCESS);
1092 view->recursion = cfg_obj_asboolean(obj);
1095 result = ns_config_get(maps, "auth-nxdomain", &obj);
1096 INSIST(result == ISC_R_SUCCESS);
1097 view->auth_nxdomain = cfg_obj_asboolean(obj);
1100 result = ns_config_get(maps, "minimal-responses", &obj);
1101 INSIST(result == ISC_R_SUCCESS);
1102 view->minimalresponses = cfg_obj_asboolean(obj);
1105 result = ns_config_get(maps, "transfer-format", &obj);
1106 INSIST(result == ISC_R_SUCCESS);
1107 str = cfg_obj_asstring(obj);
1108 if (strcasecmp(str, "many-answers") == 0)
1109 view->transfer_format = dns_many_answers;
1110 else if (strcasecmp(str, "one-answer") == 0)
1111 view->transfer_format = dns_one_answer;
1116 * Set sources where additional data and CNAME/DNAME
1117 * targets for authoritative answers may be found.
1120 result = ns_config_get(maps, "additional-from-auth", &obj);
1121 INSIST(result == ISC_R_SUCCESS);
1122 view->additionalfromauth = cfg_obj_asboolean(obj);
1123 if (view->recursion && ! view->additionalfromauth) {
1124 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
1125 "'additional-from-auth no' is only supported "
1126 "with 'recursion no'");
1127 view->additionalfromauth = ISC_TRUE;
1131 result = ns_config_get(maps, "additional-from-cache", &obj);
1132 INSIST(result == ISC_R_SUCCESS);
1133 view->additionalfromcache = cfg_obj_asboolean(obj);
1134 if (view->recursion && ! view->additionalfromcache) {
1135 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
1136 "'additional-from-cache no' is only supported "
1137 "with 'recursion no'");
1138 view->additionalfromcache = ISC_TRUE;
1141 CHECK(configure_view_acl(vconfig, config, "allow-query",
1142 actx, ns_g_mctx, &view->queryacl));
1144 if (strcmp(view->name, "_bind") != 0)
1145 CHECK(configure_view_acl(vconfig, config, "allow-recursion",
1146 actx, ns_g_mctx, &view->recursionacl));
1149 * Warning if both "recursion no;" and allow-recursion are active
1150 * except for "allow-recursion { none; };".
1152 if (!view->recursion && view->recursionacl != NULL &&
1153 (view->recursionacl->length != 1 ||
1154 view->recursionacl->elements[0].type != dns_aclelementtype_any ||
1155 view->recursionacl->elements[0].negative != ISC_TRUE)) {
1156 const char *forview = " for view ";
1157 const char *viewname = view->name;
1159 if (!strcmp(view->name, "_bind") ||
1160 !strcmp(view->name, "_default")) {
1164 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1165 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
1166 "both \"recursion no;\" and \"allow-recursion\" "
1167 "active%s%s", forview, viewname);
1170 CHECK(configure_view_acl(vconfig, config, "sortlist",
1171 actx, ns_g_mctx, &view->sortlist));
1174 result = ns_config_get(maps, "request-ixfr", &obj);
1175 INSIST(result == ISC_R_SUCCESS);
1176 view->requestixfr = cfg_obj_asboolean(obj);
1179 result = ns_config_get(maps, "provide-ixfr", &obj);
1180 INSIST(result == ISC_R_SUCCESS);
1181 view->provideixfr = cfg_obj_asboolean(obj);
1184 result = ns_config_get(maps, "dnssec-enable", &obj);
1185 INSIST(result == ISC_R_SUCCESS);
1186 view->enablednssec = cfg_obj_asboolean(obj);
1189 result = ns_config_get(maps, "dnssec-lookaside", &obj);
1190 if (result == ISC_R_SUCCESS) {
1191 for (element = cfg_list_first(obj);
1193 element = cfg_list_next(element))
1199 obj = cfg_listelt_value(element);
1201 dns_fixedname_t fixed;
1205 * When we support multiple dnssec-lookaside
1206 * entries this is how to find the domain to be
1209 dns_fixedname_init(&fixed);
1210 name = dns_fixedname_name(&fixed);
1211 str = cfg_obj_asstring(cfg_tuple_get(obj,
1213 isc_buffer_init(&b, str, strlen(str));
1214 isc_buffer_add(&b, strlen(str));
1215 CHECK(dns_name_fromtext(name, &b, dns_rootname,
1218 str = cfg_obj_asstring(cfg_tuple_get(obj,
1220 isc_buffer_init(&b, str, strlen(str));
1221 isc_buffer_add(&b, strlen(str));
1222 dlv = dns_fixedname_name(&view->dlv_fixed);
1223 CHECK(dns_name_fromtext(dlv, &b, dns_rootname,
1225 view->dlv = dns_fixedname_name(&view->dlv_fixed);
1231 * For now, there is only one kind of trusted keys, the
1234 if (view->enablednssec) {
1235 CHECK(configure_view_dnsseckeys(vconfig, config, mctx,
1237 dns_resolver_resetmustbesecure(view->resolver);
1239 result = ns_config_get(maps, "dnssec-must-be-secure", &obj);
1240 if (result == ISC_R_SUCCESS)
1241 CHECK(mustbesecure(obj, view->resolver));
1245 result = ns_config_get(maps, "max-cache-ttl", &obj);
1246 INSIST(result == ISC_R_SUCCESS);
1247 view->maxcachettl = cfg_obj_asuint32(obj);
1250 result = ns_config_get(maps, "max-ncache-ttl", &obj);
1251 INSIST(result == ISC_R_SUCCESS);
1252 view->maxncachettl = cfg_obj_asuint32(obj);
1253 if (view->maxncachettl > 7 * 24 * 3600)
1254 view->maxncachettl = 7 * 24 * 3600;
1257 result = ns_config_get(maps, "preferred-glue", &obj);
1258 if (result == ISC_R_SUCCESS) {
1259 str = cfg_obj_asstring(obj);
1260 if (strcasecmp(str, "a") == 0)
1261 view->preferred_glue = dns_rdatatype_a;
1262 else if (strcasecmp(str, "aaaa") == 0)
1263 view->preferred_glue = dns_rdatatype_aaaa;
1265 view->preferred_glue = 0;
1267 view->preferred_glue = 0;
1270 result = ns_config_get(maps, "root-delegation-only", &obj);
1271 if (result == ISC_R_SUCCESS) {
1272 dns_view_setrootdelonly(view, ISC_TRUE);
1273 if (!cfg_obj_isvoid(obj)) {
1274 dns_fixedname_t fixed;
1278 const cfg_obj_t *exclude;
1280 dns_fixedname_init(&fixed);
1281 name = dns_fixedname_name(&fixed);
1282 for (element = cfg_list_first(obj);
1284 element = cfg_list_next(element)) {
1285 exclude = cfg_listelt_value(element);
1286 str = cfg_obj_asstring(exclude);
1287 isc_buffer_init(&b, str, strlen(str));
1288 isc_buffer_add(&b, strlen(str));
1289 CHECK(dns_name_fromtext(name, &b, dns_rootname,
1291 CHECK(dns_view_excludedelegationonly(view,
1296 dns_view_setrootdelonly(view, ISC_FALSE);
1298 result = ISC_R_SUCCESS;
1301 if (dispatch4 != NULL)
1302 dns_dispatch_detach(&dispatch4);
1303 if (dispatch6 != NULL)
1304 dns_dispatch_detach(&dispatch6);
1306 dns_order_detach(&order);
1308 isc_mem_detach(&cmctx);
1311 dns_cache_detach(&cache);
1317 configure_hints(dns_view_t *view, const char *filename) {
1318 isc_result_t result;
1322 result = dns_rootns_create(view->mctx, view->rdclass, filename, &db);
1323 if (result == ISC_R_SUCCESS) {
1324 dns_view_sethints(view, db);
1332 configure_alternates(const cfg_obj_t *config, dns_view_t *view,
1333 const cfg_obj_t *alternates)
1335 const cfg_obj_t *portobj;
1336 const cfg_obj_t *addresses;
1337 const cfg_listelt_t *element;
1338 isc_result_t result = ISC_R_SUCCESS;
1342 * Determine which port to send requests to.
1344 if (ns_g_lwresdonly && ns_g_port != 0)
1347 CHECKM(ns_config_getport(config, &port), "port");
1349 if (alternates != NULL) {
1350 portobj = cfg_tuple_get(alternates, "port");
1351 if (cfg_obj_isuint32(portobj)) {
1352 isc_uint32_t val = cfg_obj_asuint32(portobj);
1353 if (val > ISC_UINT16_MAX) {
1354 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
1355 "port '%u' out of range", val);
1356 return (ISC_R_RANGE);
1358 port = (in_port_t) val;
1363 if (alternates != NULL)
1364 addresses = cfg_tuple_get(alternates, "addresses");
1366 for (element = cfg_list_first(addresses);
1368 element = cfg_list_next(element))
1370 const cfg_obj_t *alternate = cfg_listelt_value(element);
1373 if (!cfg_obj_issockaddr(alternate)) {
1374 dns_fixedname_t fixed;
1376 const char *str = cfg_obj_asstring(cfg_tuple_get(
1377 alternate, "name"));
1378 isc_buffer_t buffer;
1379 in_port_t myport = port;
1381 isc_buffer_init(&buffer, str, strlen(str));
1382 isc_buffer_add(&buffer, strlen(str));
1383 dns_fixedname_init(&fixed);
1384 name = dns_fixedname_name(&fixed);
1385 CHECK(dns_name_fromtext(name, &buffer, dns_rootname,
1388 portobj = cfg_tuple_get(alternate, "port");
1389 if (cfg_obj_isuint32(portobj)) {
1390 isc_uint32_t val = cfg_obj_asuint32(portobj);
1391 if (val > ISC_UINT16_MAX) {
1392 cfg_obj_log(portobj, ns_g_lctx,
1394 "port '%u' out of range",
1396 return (ISC_R_RANGE);
1398 myport = (in_port_t) val;
1400 CHECK(dns_resolver_addalternate(view->resolver, NULL,
1405 sa = *cfg_obj_assockaddr(alternate);
1406 if (isc_sockaddr_getport(&sa) == 0)
1407 isc_sockaddr_setport(&sa, port);
1408 CHECK(dns_resolver_addalternate(view->resolver, &sa,
1417 configure_forward(const cfg_obj_t *config, dns_view_t *view, dns_name_t *origin,
1418 const cfg_obj_t *forwarders, const cfg_obj_t *forwardtype)
1420 const cfg_obj_t *portobj;
1421 const cfg_obj_t *faddresses;
1422 const cfg_listelt_t *element;
1423 dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none;
1424 isc_sockaddrlist_t addresses;
1426 isc_result_t result;
1430 * Determine which port to send forwarded requests to.
1432 if (ns_g_lwresdonly && ns_g_port != 0)
1435 CHECKM(ns_config_getport(config, &port), "port");
1437 if (forwarders != NULL) {
1438 portobj = cfg_tuple_get(forwarders, "port");
1439 if (cfg_obj_isuint32(portobj)) {
1440 isc_uint32_t val = cfg_obj_asuint32(portobj);
1441 if (val > ISC_UINT16_MAX) {
1442 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
1443 "port '%u' out of range", val);
1444 return (ISC_R_RANGE);
1446 port = (in_port_t) val;
1451 if (forwarders != NULL)
1452 faddresses = cfg_tuple_get(forwarders, "addresses");
1454 ISC_LIST_INIT(addresses);
1456 for (element = cfg_list_first(faddresses);
1458 element = cfg_list_next(element))
1460 const cfg_obj_t *forwarder = cfg_listelt_value(element);
1461 sa = isc_mem_get(view->mctx, sizeof(isc_sockaddr_t));
1463 result = ISC_R_NOMEMORY;
1466 *sa = *cfg_obj_assockaddr(forwarder);
1467 if (isc_sockaddr_getport(sa) == 0)
1468 isc_sockaddr_setport(sa, port);
1469 ISC_LINK_INIT(sa, link);
1470 ISC_LIST_APPEND(addresses, sa, link);
1473 if (ISC_LIST_EMPTY(addresses)) {
1474 if (forwardtype != NULL)
1475 cfg_obj_log(forwarders, ns_g_lctx, ISC_LOG_WARNING,
1476 "no forwarders seen; disabling "
1478 fwdpolicy = dns_fwdpolicy_none;
1480 if (forwardtype == NULL)
1481 fwdpolicy = dns_fwdpolicy_first;
1483 const char *forwardstr = cfg_obj_asstring(forwardtype);
1484 if (strcasecmp(forwardstr, "first") == 0)
1485 fwdpolicy = dns_fwdpolicy_first;
1486 else if (strcasecmp(forwardstr, "only") == 0)
1487 fwdpolicy = dns_fwdpolicy_only;
1493 result = dns_fwdtable_add(view->fwdtable, origin, &addresses,
1495 if (result != ISC_R_SUCCESS) {
1496 char namebuf[DNS_NAME_FORMATSIZE];
1497 dns_name_format(origin, namebuf, sizeof(namebuf));
1498 cfg_obj_log(forwarders, ns_g_lctx, ISC_LOG_WARNING,
1499 "could not set up forwarding for domain '%s': %s",
1500 namebuf, isc_result_totext(result));
1504 result = ISC_R_SUCCESS;
1508 while (!ISC_LIST_EMPTY(addresses)) {
1509 sa = ISC_LIST_HEAD(addresses);
1510 ISC_LIST_UNLINK(addresses, sa, link);
1511 isc_mem_put(view->mctx, sa, sizeof(isc_sockaddr_t));
1518 * Create a new view and add it to the list.
1520 * If 'vconfig' is NULL, create the default view.
1522 * The view created is attached to '*viewp'.
1525 create_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist,
1528 isc_result_t result;
1529 const char *viewname;
1530 dns_rdataclass_t viewclass;
1531 dns_view_t *view = NULL;
1533 if (vconfig != NULL) {
1534 const cfg_obj_t *classobj = NULL;
1536 viewname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name"));
1537 classobj = cfg_tuple_get(vconfig, "class");
1538 result = ns_config_getclass(classobj, dns_rdataclass_in,
1541 viewname = "_default";
1542 viewclass = dns_rdataclass_in;
1544 result = dns_viewlist_find(viewlist, viewname, viewclass, &view);
1545 if (result == ISC_R_SUCCESS)
1546 return (ISC_R_EXISTS);
1547 if (result != ISC_R_NOTFOUND)
1549 INSIST(view == NULL);
1551 result = dns_view_create(ns_g_mctx, viewclass, viewname, &view);
1552 if (result != ISC_R_SUCCESS)
1555 ISC_LIST_APPEND(*viewlist, view, link);
1556 dns_view_attach(view, viewp);
1557 return (ISC_R_SUCCESS);
1561 * Configure or reconfigure a zone.
1564 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
1565 const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
1566 ns_aclconfctx_t *aclconf)
1568 dns_view_t *pview = NULL; /* Production view */
1569 dns_zone_t *zone = NULL; /* New or reused zone */
1570 dns_zone_t *dupzone = NULL;
1571 const cfg_obj_t *options = NULL;
1572 const cfg_obj_t *zoptions = NULL;
1573 const cfg_obj_t *typeobj = NULL;
1574 const cfg_obj_t *forwarders = NULL;
1575 const cfg_obj_t *forwardtype = NULL;
1576 const cfg_obj_t *only = NULL;
1577 isc_result_t result;
1578 isc_result_t tresult;
1579 isc_buffer_t buffer;
1580 dns_fixedname_t fixorigin;
1583 dns_rdataclass_t zclass;
1584 const char *ztypestr;
1587 (void)cfg_map_get(config, "options", &options);
1589 zoptions = cfg_tuple_get(zconfig, "options");
1592 * Get the zone origin as a dns_name_t.
1594 zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
1595 isc_buffer_init(&buffer, zname, strlen(zname));
1596 isc_buffer_add(&buffer, strlen(zname));
1597 dns_fixedname_init(&fixorigin);
1598 CHECK(dns_name_fromtext(dns_fixedname_name(&fixorigin),
1599 &buffer, dns_rootname, ISC_FALSE, NULL));
1600 origin = dns_fixedname_name(&fixorigin);
1602 CHECK(ns_config_getclass(cfg_tuple_get(zconfig, "class"),
1603 view->rdclass, &zclass));
1604 if (zclass != view->rdclass) {
1605 const char *vname = NULL;
1606 if (vconfig != NULL)
1607 vname = cfg_obj_asstring(cfg_tuple_get(vconfig,
1610 vname = "<default view>";
1612 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1613 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
1614 "zone '%s': wrong class for view '%s'",
1616 result = ISC_R_FAILURE;
1620 (void)cfg_map_get(zoptions, "type", &typeobj);
1621 if (typeobj == NULL) {
1622 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
1623 "zone '%s' 'type' not specified", zname);
1624 return (ISC_R_FAILURE);
1626 ztypestr = cfg_obj_asstring(typeobj);
1629 * "hints zones" aren't zones. If we've got one,
1630 * configure it and return.
1632 if (strcasecmp(ztypestr, "hint") == 0) {
1633 const cfg_obj_t *fileobj = NULL;
1634 if (cfg_map_get(zoptions, "file", &fileobj) != ISC_R_SUCCESS) {
1635 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1636 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
1637 "zone '%s': 'file' not specified",
1639 result = ISC_R_FAILURE;
1642 if (dns_name_equal(origin, dns_rootname)) {
1643 const char *hintsfile = cfg_obj_asstring(fileobj);
1645 result = configure_hints(view, hintsfile);
1646 if (result != ISC_R_SUCCESS) {
1647 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1648 NS_LOGMODULE_SERVER,
1650 "could not configure root hints "
1651 "from '%s': %s", hintsfile,
1652 isc_result_totext(result));
1656 * Hint zones may also refer to delegation only points.
1659 tresult = cfg_map_get(zoptions, "delegation-only",
1661 if (tresult == ISC_R_SUCCESS && cfg_obj_asboolean(only))
1662 CHECK(dns_view_adddelegationonly(view, origin));
1664 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1665 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
1666 "ignoring non-root hint zone '%s'",
1668 result = ISC_R_SUCCESS;
1670 /* Skip ordinary zone processing. */
1675 * "forward zones" aren't zones either. Translate this syntax into
1676 * the appropriate selective forwarding configuration and return.
1678 if (strcasecmp(ztypestr, "forward") == 0) {
1682 (void)cfg_map_get(zoptions, "forward", &forwardtype);
1683 (void)cfg_map_get(zoptions, "forwarders", &forwarders);
1684 result = configure_forward(config, view, origin, forwarders,
1690 * "delegation-only zones" aren't zones either.
1692 if (strcasecmp(ztypestr, "delegation-only") == 0) {
1693 result = dns_view_adddelegationonly(view, origin);
1698 * Check for duplicates in the new zone table.
1700 result = dns_view_findzone(view, origin, &dupzone);
1701 if (result == ISC_R_SUCCESS) {
1703 * We already have this zone!
1705 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
1706 "zone '%s' already exists", zname);
1707 dns_zone_detach(&dupzone);
1708 result = ISC_R_EXISTS;
1711 INSIST(dupzone == NULL);
1714 * See if we can reuse an existing zone. This is
1715 * only possible if all of these are true:
1716 * - The zone's view exists
1717 * - A zone with the right name exists in the view
1718 * - The zone is compatible with the config
1719 * options (e.g., an existing master zone cannot
1720 * be reused if the options specify a slave zone)
1722 result = dns_viewlist_find(&ns_g_server->viewlist,
1723 view->name, view->rdclass,
1725 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
1728 result = dns_view_findzone(pview, origin, &zone);
1729 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
1732 if (! ns_zone_reusable(zone, zconfig))
1733 dns_zone_detach(&zone);
1738 * We found a reusable zone. Make it use the
1741 dns_zone_setview(zone, view);
1744 * We cannot reuse an existing zone, we have
1745 * to create a new one.
1747 CHECK(dns_zone_create(&zone, mctx));
1748 CHECK(dns_zone_setorigin(zone, origin));
1749 dns_zone_setview(zone, view);
1750 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
1754 * If the zone contains a 'forwarders' statement, configure
1755 * selective forwarding.
1758 if (cfg_map_get(zoptions, "forwarders", &forwarders) == ISC_R_SUCCESS)
1761 (void)cfg_map_get(zoptions, "forward", &forwardtype);
1762 CHECK(configure_forward(config, view, origin, forwarders,
1767 * Stub and forward zones may also refer to delegation only points.
1770 if (cfg_map_get(zoptions, "delegation-only", &only) == ISC_R_SUCCESS)
1772 if (cfg_obj_asboolean(only))
1773 CHECK(dns_view_adddelegationonly(view, origin));
1777 * Configure the zone.
1779 CHECK(ns_zone_configure(config, vconfig, zconfig, aclconf, zone));
1782 * Add the zone to its view in the new view list.
1784 CHECK(dns_view_addzone(view, zone));
1788 dns_zone_detach(&zone);
1790 dns_view_detach(&pview);
1796 * Configure a single server quota.
1799 configure_server_quota(const cfg_obj_t **maps, const char *name,
1802 const cfg_obj_t *obj = NULL;
1803 isc_result_t result;
1805 result = ns_config_get(maps, name, &obj);
1806 INSIST(result == ISC_R_SUCCESS);
1807 isc_quota_max(quota, cfg_obj_asuint32(obj));
1811 * This function is called as soon as the 'directory' statement has been
1812 * parsed. This can be extended to support other options if necessary.
1815 directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) {
1816 isc_result_t result;
1817 const char *directory;
1819 REQUIRE(strcasecmp("directory", clausename) == 0);
1827 directory = cfg_obj_asstring(obj);
1829 if (! isc_file_ischdiridempotent(directory))
1830 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
1831 "option 'directory' contains relative path '%s'",
1834 result = isc_dir_chdir(directory);
1835 if (result != ISC_R_SUCCESS) {
1836 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
1837 "change directory to '%s' failed: %s",
1838 directory, isc_result_totext(result));
1842 return (ISC_R_SUCCESS);
1846 scan_interfaces(ns_server_t *server, isc_boolean_t verbose) {
1847 isc_boolean_t match_mapped = server->aclenv.match_mapped;
1849 ns_interfacemgr_scan(server->interfacemgr, verbose);
1851 * Update the "localhost" and "localnets" ACLs to match the
1852 * current set of network interfaces.
1854 dns_aclenv_copy(&server->aclenv,
1855 ns_interfacemgr_getaclenv(server->interfacemgr));
1857 server->aclenv.match_mapped = match_mapped;
1861 add_listenelt(isc_mem_t *mctx, ns_listenlist_t *list, isc_sockaddr_t *addr) {
1862 ns_listenelt_t *lelt = NULL;
1863 dns_acl_t *src_acl = NULL;
1864 dns_aclelement_t aelt;
1865 isc_result_t result;
1866 isc_sockaddr_t any_sa6;
1868 REQUIRE(isc_sockaddr_pf(addr) == AF_INET6);
1870 isc_sockaddr_any6(&any_sa6);
1871 if (!isc_sockaddr_equal(&any_sa6, addr)) {
1872 aelt.type = dns_aclelementtype_ipprefix;
1873 aelt.negative = ISC_FALSE;
1874 aelt.u.ip_prefix.prefixlen = 128;
1875 isc_netaddr_fromin6(&aelt.u.ip_prefix.address,
1876 &addr->type.sin6.sin6_addr);
1878 result = dns_acl_create(mctx, 1, &src_acl);
1879 if (result != ISC_R_SUCCESS)
1881 result = dns_acl_appendelement(src_acl, &aelt);
1882 if (result != ISC_R_SUCCESS)
1885 result = ns_listenelt_create(mctx, isc_sockaddr_getport(addr),
1887 if (result != ISC_R_SUCCESS)
1889 ISC_LIST_APPEND(list->elts, lelt, link);
1892 return (ISC_R_SUCCESS);
1895 INSIST(lelt == NULL);
1896 dns_acl_detach(&src_acl);
1902 * Make a list of xxx-source addresses and call ns_interfacemgr_adjust()
1903 * to update the listening interfaces accordingly.
1904 * We currently only consider IPv6, because this only affects IPv6 wildcard
1908 adjust_interfaces(ns_server_t *server, isc_mem_t *mctx) {
1909 isc_result_t result;
1910 ns_listenlist_t *list = NULL;
1912 dns_zone_t *zone, *next;
1913 isc_sockaddr_t addr, *addrp;
1915 result = ns_listenlist_create(mctx, &list);
1916 if (result != ISC_R_SUCCESS)
1919 for (view = ISC_LIST_HEAD(server->viewlist);
1921 view = ISC_LIST_NEXT(view, link)) {
1922 dns_dispatch_t *dispatch6;
1924 dispatch6 = dns_resolver_dispatchv6(view->resolver);
1925 if (dispatch6 == NULL)
1927 result = dns_dispatch_getlocaladdress(dispatch6, &addr);
1928 if (result != ISC_R_SUCCESS)
1930 result = add_listenelt(mctx, list, &addr);
1931 if (result != ISC_R_SUCCESS)
1936 for (result = dns_zone_first(server->zonemgr, &zone);
1937 result == ISC_R_SUCCESS;
1938 next = NULL, result = dns_zone_next(zone, &next), zone = next) {
1939 dns_view_t *zoneview;
1942 * At this point the zone list may contain a stale zone
1943 * just removed from the configuration. To see the validity,
1944 * check if the corresponding view is in our current view list.
1945 * There may also be old zones that are still in the process
1946 * of shutting down and have detached from their old view
1947 * (zoneview == NULL).
1949 zoneview = dns_zone_getview(zone);
1950 if (zoneview == NULL)
1952 for (view = ISC_LIST_HEAD(server->viewlist);
1953 view != NULL && view != zoneview;
1954 view = ISC_LIST_NEXT(view, link))
1959 addrp = dns_zone_getnotifysrc6(zone);
1960 result = add_listenelt(mctx, list, addrp);
1961 if (result != ISC_R_SUCCESS)
1964 addrp = dns_zone_getxfrsource6(zone);
1965 result = add_listenelt(mctx, list, addrp);
1966 if (result != ISC_R_SUCCESS)
1970 ns_interfacemgr_adjust(server->interfacemgr, list, ISC_TRUE);
1973 ns_listenlist_detach(&list);
1978 * Even when we failed the procedure, most of other interfaces
1979 * should work correctly. We therefore just warn it.
1981 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1982 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
1983 "could not adjust the listen-on list; "
1984 "some interfaces may not work");
1989 * This event callback is invoked to do periodic network
1990 * interface scanning.
1993 interface_timer_tick(isc_task_t *task, isc_event_t *event) {
1994 isc_result_t result;
1995 ns_server_t *server = (ns_server_t *) event->ev_arg;
1996 INSIST(task == server->task);
1998 isc_event_free(&event);
2000 * XXX should scan interfaces unlocked and get exclusive access
2001 * only to replace ACLs.
2003 result = isc_task_beginexclusive(server->task);
2004 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2005 scan_interfaces(server, ISC_FALSE);
2006 isc_task_endexclusive(server->task);
2010 heartbeat_timer_tick(isc_task_t *task, isc_event_t *event) {
2011 ns_server_t *server = (ns_server_t *) event->ev_arg;
2015 isc_event_free(&event);
2016 view = ISC_LIST_HEAD(server->viewlist);
2017 while (view != NULL) {
2018 dns_view_dialup(view);
2019 view = ISC_LIST_NEXT(view, link);
2024 * Replace the current value of '*field', a dynamically allocated
2025 * string or NULL, with a dynamically allocated copy of the
2026 * null-terminated string pointed to by 'value', or NULL.
2029 setstring(ns_server_t *server, char **field, const char *value) {
2032 if (value != NULL) {
2033 copy = isc_mem_strdup(server->mctx, value);
2035 return (ISC_R_NOMEMORY);
2041 isc_mem_free(server->mctx, *field);
2044 return (ISC_R_SUCCESS);
2048 * Replace the current value of '*field', a dynamically allocated
2049 * string or NULL, with another dynamically allocated string
2050 * or NULL if whether 'obj' is a string or void value, respectively.
2053 setoptstring(ns_server_t *server, char **field, const cfg_obj_t *obj) {
2054 if (cfg_obj_isvoid(obj))
2055 return (setstring(server, field, NULL));
2057 return (setstring(server, field, cfg_obj_asstring(obj)));
2061 set_limit(const cfg_obj_t **maps, const char *configname,
2062 const char *description, isc_resource_t resourceid,
2063 isc_resourcevalue_t defaultvalue)
2065 const cfg_obj_t *obj = NULL;
2066 const char *resource;
2067 isc_resourcevalue_t value;
2068 isc_result_t result;
2070 if (ns_config_get(maps, configname, &obj) != ISC_R_SUCCESS)
2073 if (cfg_obj_isstring(obj)) {
2074 resource = cfg_obj_asstring(obj);
2075 if (strcasecmp(resource, "unlimited") == 0)
2076 value = ISC_RESOURCE_UNLIMITED;
2078 INSIST(strcasecmp(resource, "default") == 0);
2079 value = defaultvalue;
2082 value = cfg_obj_asuint64(obj);
2084 result = isc_resource_setlimit(resourceid, value);
2085 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2086 result == ISC_R_SUCCESS ?
2087 ISC_LOG_DEBUG(3) : ISC_LOG_WARNING,
2088 "set maximum %s to %" ISC_PRINT_QUADFORMAT "d: %s",
2089 description, value, isc_result_totext(result));
2092 #define SETLIMIT(cfgvar, resource, description) \
2093 set_limit(maps, cfgvar, description, isc_resource_ ## resource, \
2094 ns_g_init ## resource)
2097 set_limits(const cfg_obj_t **maps) {
2098 SETLIMIT("stacksize", stacksize, "stack size");
2099 SETLIMIT("datasize", datasize, "data size");
2100 SETLIMIT("coresize", coresize, "core size");
2101 SETLIMIT("files", openfiles, "open files");
2105 portlist_fromconf(dns_portlist_t *portlist, unsigned int family,
2106 const cfg_obj_t *ports)
2108 const cfg_listelt_t *element;
2109 isc_result_t result = ISC_R_SUCCESS;
2111 for (element = cfg_list_first(ports);
2113 element = cfg_list_next(element)) {
2114 const cfg_obj_t *obj = cfg_listelt_value(element);
2115 in_port_t port = (in_port_t)cfg_obj_asuint32(obj);
2117 result = dns_portlist_add(portlist, family, port);
2118 if (result != ISC_R_SUCCESS)
2125 load_configuration(const char *filename, ns_server_t *server,
2126 isc_boolean_t first_time)
2128 isc_result_t result;
2129 cfg_parser_t *parser = NULL;
2131 const cfg_obj_t *options;
2132 const cfg_obj_t *views;
2133 const cfg_obj_t *obj;
2134 const cfg_obj_t *v4ports, *v6ports;
2135 const cfg_obj_t *maps[3];
2136 const cfg_obj_t *builtin_views;
2137 const cfg_listelt_t *element;
2138 dns_view_t *view = NULL;
2139 dns_view_t *view_next;
2140 dns_viewlist_t viewlist;
2141 dns_viewlist_t tmpviewlist;
2142 ns_aclconfctx_t aclconfctx;
2143 isc_uint32_t interface_interval;
2144 isc_uint32_t heartbeat_interval;
2145 isc_uint32_t udpsize;
2146 in_port_t listen_port;
2149 ns_aclconfctx_init(&aclconfctx);
2150 ISC_LIST_INIT(viewlist);
2152 /* Ensure exclusive access to configuration data. */
2153 result = isc_task_beginexclusive(server->task);
2154 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2157 * Parse the global default pseudo-config file.
2160 CHECK(ns_config_parsedefaults(ns_g_parser, &ns_g_config));
2161 RUNTIME_CHECK(cfg_map_get(ns_g_config, "options",
2167 * Parse the configuration file using the new config code.
2169 result = ISC_R_FAILURE;
2173 * Unless this is lwresd with the -C option, parse the config file.
2175 if (!(ns_g_lwresdonly && lwresd_g_useresolvconf)) {
2176 isc_log_write(ns_g_lctx,
2177 NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2178 ISC_LOG_INFO, "loading configuration from '%s'",
2180 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx, &parser));
2181 cfg_parser_setcallback(parser, directory_callback, NULL);
2182 result = cfg_parse_file(parser, filename, &cfg_type_namedconf,
2187 * If this is lwresd with the -C option, or lwresd with no -C or -c
2188 * option where the above parsing failed, parse resolv.conf.
2190 if (ns_g_lwresdonly &&
2191 (lwresd_g_useresolvconf ||
2192 (!ns_g_conffileset && result == ISC_R_FILENOTFOUND)))
2194 isc_log_write(ns_g_lctx,
2195 NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2196 ISC_LOG_INFO, "loading configuration from '%s'",
2197 lwresd_g_resolvconffile);
2199 cfg_parser_destroy(&parser);
2200 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx, &parser));
2201 result = ns_lwresd_parseeresolvconf(ns_g_mctx, parser,
2207 * Check the validity of the configuration.
2209 CHECK(bind9_check_namedconf(config, ns_g_lctx, ns_g_mctx));
2212 * Fill in the maps array, used for resolving defaults.
2216 result = cfg_map_get(config, "options", &options);
2217 if (result == ISC_R_SUCCESS)
2218 maps[i++] = options;
2219 maps[i++] = ns_g_defaults;
2223 * Set process limits, which (usually) needs to be done as root.
2228 * Configure various server options.
2230 configure_server_quota(maps, "transfers-out", &server->xfroutquota);
2231 configure_server_quota(maps, "tcp-clients", &server->tcpquota);
2232 configure_server_quota(maps, "recursive-clients",
2233 &server->recursionquota);
2234 if (server->recursionquota.max > 1000)
2235 isc_quota_soft(&server->recursionquota,
2236 server->recursionquota.max - 100);
2238 isc_quota_soft(&server->recursionquota, 0);
2240 CHECK(configure_view_acl(NULL, config, "blackhole", &aclconfctx,
2241 ns_g_mctx, &server->blackholeacl));
2242 if (server->blackholeacl != NULL)
2243 dns_dispatchmgr_setblackhole(ns_g_dispatchmgr,
2244 server->blackholeacl);
2247 result = ns_config_get(maps, "match-mapped-addresses", &obj);
2248 INSIST(result == ISC_R_SUCCESS);
2249 server->aclenv.match_mapped = cfg_obj_asboolean(obj);
2253 (void)ns_config_get(maps, "avoid-v4-udp-ports", &v4ports);
2254 (void)ns_config_get(maps, "avoid-v6-udp-ports", &v6ports);
2255 if (v4ports != NULL || v6ports != NULL) {
2256 dns_portlist_t *portlist = NULL;
2257 result = dns_portlist_create(ns_g_mctx, &portlist);
2258 if (result == ISC_R_SUCCESS && v4ports != NULL)
2259 result = portlist_fromconf(portlist, AF_INET, v4ports);
2260 if (result == ISC_R_SUCCESS && v6ports != NULL)
2261 portlist_fromconf(portlist, AF_INET6, v6ports);
2262 if (result == ISC_R_SUCCESS)
2263 dns_dispatchmgr_setblackportlist(ns_g_dispatchmgr, portlist);
2264 if (portlist != NULL)
2265 dns_portlist_detach(&portlist);
2268 dns_dispatchmgr_setblackportlist(ns_g_dispatchmgr, NULL);
2271 * Set the EDNS UDP size when we don't match a view.
2274 result = ns_config_get(maps, "edns-udp-size", &obj);
2275 INSIST(result == ISC_R_SUCCESS);
2276 udpsize = cfg_obj_asuint32(obj);
2281 ns_g_udpsize = (isc_uint16_t)udpsize;
2284 * Configure the zone manager.
2287 result = ns_config_get(maps, "transfers-in", &obj);
2288 INSIST(result == ISC_R_SUCCESS);
2289 dns_zonemgr_settransfersin(server->zonemgr, cfg_obj_asuint32(obj));
2292 result = ns_config_get(maps, "transfers-per-ns", &obj);
2293 INSIST(result == ISC_R_SUCCESS);
2294 dns_zonemgr_settransfersperns(server->zonemgr, cfg_obj_asuint32(obj));
2297 result = ns_config_get(maps, "serial-query-rate", &obj);
2298 INSIST(result == ISC_R_SUCCESS);
2299 dns_zonemgr_setserialqueryrate(server->zonemgr, cfg_obj_asuint32(obj));
2302 * Determine which port to use for listening for incoming connections.
2305 listen_port = ns_g_port;
2307 CHECKM(ns_config_getport(config, &listen_port), "port");
2310 * Find the listen queue depth.
2313 result = ns_config_get(maps, "tcp-listen-queue", &obj);
2314 INSIST(result == ISC_R_SUCCESS);
2315 ns_g_listen = cfg_obj_asuint32(obj);
2316 if (ns_g_listen < 3)
2320 * Configure the interface manager according to the "listen-on"
2324 const cfg_obj_t *clistenon = NULL;
2325 ns_listenlist_t *listenon = NULL;
2329 * Even though listen-on is present in the default
2330 * configuration, we can't use it here, since it isn't
2331 * used if we're in lwresd mode. This way is easier.
2333 if (options != NULL)
2334 (void)cfg_map_get(options, "listen-on", &clistenon);
2335 if (clistenon != NULL) {
2336 result = ns_listenlist_fromconfig(clistenon,
2341 } else if (!ns_g_lwresdonly) {
2343 * Not specified, use default.
2345 CHECK(ns_listenlist_default(ns_g_mctx, listen_port,
2346 ISC_TRUE, &listenon));
2348 if (listenon != NULL) {
2349 ns_interfacemgr_setlistenon4(server->interfacemgr,
2351 ns_listenlist_detach(&listenon);
2358 const cfg_obj_t *clistenon = NULL;
2359 ns_listenlist_t *listenon = NULL;
2361 if (options != NULL)
2362 (void)cfg_map_get(options, "listen-on-v6", &clistenon);
2363 if (clistenon != NULL) {
2364 result = ns_listenlist_fromconfig(clistenon,
2369 } else if (!ns_g_lwresdonly) {
2371 * Not specified, use default.
2373 CHECK(ns_listenlist_default(ns_g_mctx, listen_port,
2374 ISC_FALSE, &listenon));
2376 if (listenon != NULL) {
2377 ns_interfacemgr_setlistenon6(server->interfacemgr,
2379 ns_listenlist_detach(&listenon);
2384 * Rescan the interface list to pick up changes in the
2385 * listen-on option. It's important that we do this before we try
2386 * to configure the query source, since the dispatcher we use might
2387 * be shared with an interface.
2389 scan_interfaces(server, ISC_TRUE);
2392 * Arrange for further interface scanning to occur periodically
2393 * as specified by the "interface-interval" option.
2396 result = ns_config_get(maps, "interface-interval", &obj);
2397 INSIST(result == ISC_R_SUCCESS);
2398 interface_interval = cfg_obj_asuint32(obj) * 60;
2399 if (interface_interval == 0) {
2400 CHECK(isc_timer_reset(server->interface_timer,
2401 isc_timertype_inactive,
2402 NULL, NULL, ISC_TRUE));
2403 } else if (server->interface_interval != interface_interval) {
2404 isc_interval_t interval;
2405 isc_interval_set(&interval, interface_interval, 0);
2406 CHECK(isc_timer_reset(server->interface_timer,
2407 isc_timertype_ticker,
2408 NULL, &interval, ISC_FALSE));
2410 server->interface_interval = interface_interval;
2413 * Configure the dialup heartbeat timer.
2416 result = ns_config_get(maps, "heartbeat-interval", &obj);
2417 INSIST(result == ISC_R_SUCCESS);
2418 heartbeat_interval = cfg_obj_asuint32(obj) * 60;
2419 if (heartbeat_interval == 0) {
2420 CHECK(isc_timer_reset(server->heartbeat_timer,
2421 isc_timertype_inactive,
2422 NULL, NULL, ISC_TRUE));
2423 } else if (server->heartbeat_interval != heartbeat_interval) {
2424 isc_interval_t interval;
2425 isc_interval_set(&interval, heartbeat_interval, 0);
2426 CHECK(isc_timer_reset(server->heartbeat_timer,
2427 isc_timertype_ticker,
2428 NULL, &interval, ISC_FALSE));
2430 server->heartbeat_interval = heartbeat_interval;
2433 * Configure and freeze all explicit views. Explicit
2434 * views that have zones were already created at parsing
2435 * time, but views with no zones must be created here.
2438 (void)cfg_map_get(config, "view", &views);
2439 for (element = cfg_list_first(views);
2441 element = cfg_list_next(element))
2443 const cfg_obj_t *vconfig = cfg_listelt_value(element);
2446 CHECK(create_view(vconfig, &viewlist, &view));
2447 INSIST(view != NULL);
2448 CHECK(configure_view(view, config, vconfig,
2449 ns_g_mctx, &aclconfctx, ISC_TRUE));
2450 dns_view_freeze(view);
2451 dns_view_detach(&view);
2455 * Make sure we have a default view if and only if there
2456 * were no explicit views.
2458 if (views == NULL) {
2460 * No explicit views; there ought to be a default view.
2461 * There may already be one created as a side effect
2462 * of zone statements, or we may have to create one.
2463 * In either case, we need to configure and freeze it.
2465 CHECK(create_view(NULL, &viewlist, &view));
2466 CHECK(configure_view(view, config, NULL, ns_g_mctx,
2467 &aclconfctx, ISC_TRUE));
2468 dns_view_freeze(view);
2469 dns_view_detach(&view);
2473 * Create (or recreate) the built-in views. Currently
2474 * there is only one, the _bind view.
2476 builtin_views = NULL;
2477 RUNTIME_CHECK(cfg_map_get(ns_g_config, "view",
2478 &builtin_views) == ISC_R_SUCCESS);
2479 for (element = cfg_list_first(builtin_views);
2481 element = cfg_list_next(element))
2483 const cfg_obj_t *vconfig = cfg_listelt_value(element);
2484 CHECK(create_view(vconfig, &viewlist, &view));
2485 CHECK(configure_view(view, config, vconfig, ns_g_mctx,
2486 &aclconfctx, ISC_FALSE));
2487 dns_view_freeze(view);
2488 dns_view_detach(&view);
2493 * Swap our new view list with the production one.
2495 tmpviewlist = server->viewlist;
2496 server->viewlist = viewlist;
2497 viewlist = tmpviewlist;
2500 * Load the TKEY information from the configuration.
2502 if (options != NULL) {
2503 dns_tkeyctx_t *t = NULL;
2504 CHECKM(ns_tkeyctx_fromconfig(options, ns_g_mctx, ns_g_entropy,
2506 "configuring TKEY");
2507 if (server->tkeyctx != NULL)
2508 dns_tkeyctx_destroy(&server->tkeyctx);
2509 server->tkeyctx = t;
2513 * Bind the control port(s).
2515 CHECKM(ns_controls_configure(ns_g_server->controls, config,
2517 "binding control channel(s)");
2520 * Bind the lwresd port(s).
2522 CHECKM(ns_lwresd_configure(ns_g_mctx, config),
2523 "binding lightweight resolver ports");
2526 * Open the source of entropy.
2530 result = ns_config_get(maps, "random-device", &obj);
2531 if (result != ISC_R_SUCCESS) {
2532 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2533 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
2534 "no source of entropy found");
2536 const char *randomdev = cfg_obj_asstring(obj);
2537 result = isc_entropy_createfilesource(ns_g_entropy,
2539 if (result != ISC_R_SUCCESS)
2540 isc_log_write(ns_g_lctx,
2541 NS_LOGCATEGORY_GENERAL,
2542 NS_LOGMODULE_SERVER,
2544 "could not open entropy source "
2547 isc_result_totext(result));
2548 #ifdef PATH_RANDOMDEV
2549 if (ns_g_fallbackentropy != NULL) {
2550 if (result != ISC_R_SUCCESS) {
2551 isc_log_write(ns_g_lctx,
2552 NS_LOGCATEGORY_GENERAL,
2553 NS_LOGMODULE_SERVER,
2555 "using pre-chroot entropy source "
2558 isc_entropy_detach(&ns_g_entropy);
2559 isc_entropy_attach(ns_g_fallbackentropy,
2562 isc_entropy_detach(&ns_g_fallbackentropy);
2569 * Relinquish root privileges.
2575 * Configure the logging system.
2577 * Do this after changing UID to make sure that any log
2578 * files specified in named.conf get created by the
2579 * unprivileged user, not root.
2581 if (ns_g_logstderr) {
2582 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2583 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
2584 "ignoring config file logging "
2585 "statement due to -g option");
2587 const cfg_obj_t *logobj = NULL;
2588 isc_logconfig_t *logc = NULL;
2590 CHECKM(isc_logconfig_create(ns_g_lctx, &logc),
2591 "creating new logging configuration");
2594 (void)cfg_map_get(config, "logging", &logobj);
2595 if (logobj != NULL) {
2596 CHECKM(ns_log_configure(logc, logobj),
2597 "configuring logging");
2599 CHECKM(ns_log_setdefaultchannels(logc),
2600 "setting up default logging channels");
2601 CHECKM(ns_log_setunmatchedcategory(logc),
2602 "setting up default 'category unmatched'");
2603 CHECKM(ns_log_setdefaultcategory(logc),
2604 "setting up default 'category default'");
2607 result = isc_logconfig_use(ns_g_lctx, logc);
2608 if (result != ISC_R_SUCCESS) {
2609 isc_logconfig_destroy(&logc);
2610 CHECKM(result, "installing logging configuration");
2613 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2614 NS_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
2615 "now using logging configuration from "
2620 * Set the default value of the query logging flag depending
2621 * whether a "queries" category has been defined. This is
2622 * a disgusting hack, but we need to do this for BIND 8
2626 const cfg_obj_t *logobj = NULL;
2627 const cfg_obj_t *categories = NULL;
2630 if (ns_config_get(maps, "querylog", &obj) == ISC_R_SUCCESS) {
2631 server->log_queries = cfg_obj_asboolean(obj);
2634 (void)cfg_map_get(config, "logging", &logobj);
2636 (void)cfg_map_get(logobj, "category",
2638 if (categories != NULL) {
2639 const cfg_listelt_t *element;
2640 for (element = cfg_list_first(categories);
2642 element = cfg_list_next(element))
2644 const cfg_obj_t *catobj;
2647 obj = cfg_listelt_value(element);
2648 catobj = cfg_tuple_get(obj, "name");
2649 str = cfg_obj_asstring(catobj);
2650 if (strcasecmp(str, "queries") == 0)
2651 server->log_queries = ISC_TRUE;
2658 if (ns_config_get(maps, "pid-file", &obj) == ISC_R_SUCCESS)
2659 if (cfg_obj_isvoid(obj))
2660 ns_os_writepidfile(NULL, first_time);
2662 ns_os_writepidfile(cfg_obj_asstring(obj), first_time);
2663 else if (ns_g_lwresdonly)
2664 ns_os_writepidfile(lwresd_g_defaultpidfile, first_time);
2666 ns_os_writepidfile(ns_g_defaultpidfile, first_time);
2669 if (options != NULL &&
2670 cfg_map_get(options, "memstatistics-file", &obj) == ISC_R_SUCCESS)
2671 ns_main_setmemstats(cfg_obj_asstring(obj));
2673 ns_main_setmemstats(NULL);
2676 result = ns_config_get(maps, "statistics-file", &obj);
2677 INSIST(result == ISC_R_SUCCESS);
2678 CHECKM(setstring(server, &server->statsfile, cfg_obj_asstring(obj)),
2682 result = ns_config_get(maps, "dump-file", &obj);
2683 INSIST(result == ISC_R_SUCCESS);
2684 CHECKM(setstring(server, &server->dumpfile, cfg_obj_asstring(obj)),
2688 result = ns_config_get(maps, "recursing-file", &obj);
2689 INSIST(result == ISC_R_SUCCESS);
2690 CHECKM(setstring(server, &server->recfile, cfg_obj_asstring(obj)),
2694 result = ns_config_get(maps, "version", &obj);
2695 if (result == ISC_R_SUCCESS) {
2696 CHECKM(setoptstring(server, &server->version, obj), "strdup");
2697 server->version_set = ISC_TRUE;
2699 server->version_set = ISC_FALSE;
2703 result = ns_config_get(maps, "hostname", &obj);
2704 if (result == ISC_R_SUCCESS) {
2705 CHECKM(setoptstring(server, &server->hostname, obj), "strdup");
2706 server->hostname_set = ISC_TRUE;
2708 server->hostname_set = ISC_FALSE;
2712 result = ns_config_get(maps, "server-id", &obj);
2713 server->server_usehostname = ISC_FALSE;
2714 if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) {
2715 server->server_usehostname = ISC_TRUE;
2716 } else if (result == ISC_R_SUCCESS) {
2717 CHECKM(setoptstring(server, &server->server_id, obj), "strdup");
2719 result = setoptstring(server, &server->server_id, NULL);
2720 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2724 result = ns_config_get(maps, "flush-zones-on-shutdown", &obj);
2725 if (result == ISC_R_SUCCESS) {
2726 server->flushonshutdown = cfg_obj_asboolean(obj);
2728 server->flushonshutdown = ISC_FALSE;
2731 result = ISC_R_SUCCESS;
2734 ns_aclconfctx_destroy(&aclconfctx);
2736 if (parser != NULL) {
2738 cfg_obj_destroy(parser, &config);
2739 cfg_parser_destroy(&parser);
2743 dns_view_detach(&view);
2746 * This cleans up either the old production view list
2747 * or our temporary list depending on whether they
2748 * were swapped above or not.
2750 for (view = ISC_LIST_HEAD(viewlist);
2753 view_next = ISC_LIST_NEXT(view, link);
2754 ISC_LIST_UNLINK(viewlist, view, link);
2755 dns_view_detach(&view);
2760 * Adjust the listening interfaces in accordance with the source
2761 * addresses specified in views and zones.
2763 if (isc_net_probeipv6() == ISC_R_SUCCESS)
2764 adjust_interfaces(server, ns_g_mctx);
2766 /* Relinquish exclusive access to configuration data. */
2767 isc_task_endexclusive(server->task);
2769 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2770 ISC_LOG_DEBUG(1), "load_configuration: %s",
2771 isc_result_totext(result));
2777 load_zones(ns_server_t *server, isc_boolean_t stop) {
2778 isc_result_t result;
2781 result = isc_task_beginexclusive(server->task);
2782 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2785 * Load zone data from disk.
2787 for (view = ISC_LIST_HEAD(server->viewlist);
2789 view = ISC_LIST_NEXT(view, link))
2791 CHECK(dns_view_load(view, stop));
2795 * Force zone maintenance. Do this after loading
2796 * so that we know when we need to force AXFR of
2797 * slave zones whose master files are missing.
2799 CHECK(dns_zonemgr_forcemaint(server->zonemgr));
2801 isc_task_endexclusive(server->task);
2806 load_new_zones(ns_server_t *server, isc_boolean_t stop) {
2807 isc_result_t result;
2810 result = isc_task_beginexclusive(server->task);
2811 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2814 * Load zone data from disk.
2816 for (view = ISC_LIST_HEAD(server->viewlist);
2818 view = ISC_LIST_NEXT(view, link))
2820 CHECK(dns_view_loadnew(view, stop));
2823 * Force zone maintenance. Do this after loading
2824 * so that we know when we need to force AXFR of
2825 * slave zones whose master files are missing.
2827 dns_zonemgr_resumexfrs(server->zonemgr);
2829 isc_task_endexclusive(server->task);
2834 run_server(isc_task_t *task, isc_event_t *event) {
2835 isc_result_t result;
2836 ns_server_t *server = (ns_server_t *)event->ev_arg;
2838 INSIST(task == server->task);
2840 isc_event_free(&event);
2842 CHECKFATAL(dns_dispatchmgr_create(ns_g_mctx, ns_g_entropy,
2844 "creating dispatch manager");
2846 CHECKFATAL(ns_interfacemgr_create(ns_g_mctx, ns_g_taskmgr,
2847 ns_g_socketmgr, ns_g_dispatchmgr,
2848 &server->interfacemgr),
2849 "creating interface manager");
2851 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
2852 NULL, NULL, server->task,
2853 interface_timer_tick,
2854 server, &server->interface_timer),
2855 "creating interface timer");
2857 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
2858 NULL, NULL, server->task,
2859 heartbeat_timer_tick,
2860 server, &server->heartbeat_timer),
2861 "creating heartbeat timer");
2863 CHECKFATAL(cfg_parser_create(ns_g_mctx, NULL, &ns_g_parser),
2864 "creating default configuration parser");
2866 if (ns_g_lwresdonly)
2867 CHECKFATAL(load_configuration(lwresd_g_conffile, server,
2869 "loading configuration");
2871 CHECKFATAL(load_configuration(ns_g_conffile, server, ISC_TRUE),
2872 "loading configuration");
2876 CHECKFATAL(load_zones(server, ISC_FALSE), "loading zones");
2879 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2880 ISC_LOG_NOTICE, "running");
2884 ns_server_flushonshutdown(ns_server_t *server, isc_boolean_t flush) {
2886 REQUIRE(NS_SERVER_VALID(server));
2888 server->flushonshutdown = flush;
2892 shutdown_server(isc_task_t *task, isc_event_t *event) {
2893 isc_result_t result;
2894 dns_view_t *view, *view_next;
2895 ns_server_t *server = (ns_server_t *)event->ev_arg;
2896 isc_boolean_t flush = server->flushonshutdown;
2899 INSIST(task == server->task);
2901 result = isc_task_beginexclusive(server->task);
2902 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2904 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2905 ISC_LOG_INFO, "shutting down%s",
2906 flush ? ": flushing changes" : "");
2908 ns_controls_shutdown(server->controls);
2909 end_reserved_dispatches(server, ISC_TRUE);
2911 cfg_obj_destroy(ns_g_parser, &ns_g_config);
2912 cfg_parser_destroy(&ns_g_parser);
2914 for (view = ISC_LIST_HEAD(server->viewlist);
2917 view_next = ISC_LIST_NEXT(view, link);
2918 ISC_LIST_UNLINK(server->viewlist, view, link);
2920 dns_view_flushanddetach(&view);
2922 dns_view_detach(&view);
2925 isc_timer_detach(&server->interface_timer);
2926 isc_timer_detach(&server->heartbeat_timer);
2928 ns_interfacemgr_shutdown(server->interfacemgr);
2929 ns_interfacemgr_detach(&server->interfacemgr);
2931 dns_dispatchmgr_destroy(&ns_g_dispatchmgr);
2933 dns_zonemgr_shutdown(server->zonemgr);
2935 if (server->blackholeacl != NULL)
2936 dns_acl_detach(&server->blackholeacl);
2938 dns_db_detach(&server->in_roothints);
2940 isc_task_endexclusive(server->task);
2942 isc_task_detach(&server->task);
2944 isc_event_free(&event);
2948 ns_server_create(isc_mem_t *mctx, ns_server_t **serverp) {
2949 isc_result_t result;
2951 ns_server_t *server = isc_mem_get(mctx, sizeof(*server));
2953 fatal("allocating server object", ISC_R_NOMEMORY);
2955 server->mctx = mctx;
2956 server->task = NULL;
2958 /* Initialize configuration data with default values. */
2960 result = isc_quota_init(&server->xfroutquota, 10);
2961 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2962 result = isc_quota_init(&server->tcpquota, 10);
2963 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2964 result = isc_quota_init(&server->recursionquota, 100);
2965 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2967 result = dns_aclenv_init(mctx, &server->aclenv);
2968 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2970 /* Initialize server data structures. */
2971 server->zonemgr = NULL;
2972 server->interfacemgr = NULL;
2973 ISC_LIST_INIT(server->viewlist);
2974 server->in_roothints = NULL;
2975 server->blackholeacl = NULL;
2977 CHECKFATAL(dns_rootns_create(mctx, dns_rdataclass_in, NULL,
2978 &server->in_roothints),
2979 "setting up root hints");
2981 CHECKFATAL(isc_mutex_init(&server->reload_event_lock),
2982 "initializing reload event lock");
2983 server->reload_event =
2984 isc_event_allocate(ns_g_mctx, server,
2988 sizeof(isc_event_t));
2989 CHECKFATAL(server->reload_event == NULL ?
2990 ISC_R_NOMEMORY : ISC_R_SUCCESS,
2991 "allocating reload event");
2993 CHECKFATAL(dst_lib_init(ns_g_mctx, ns_g_entropy, ISC_ENTROPY_GOODONLY),
2994 "initializing DST");
2996 server->tkeyctx = NULL;
2997 CHECKFATAL(dns_tkeyctx_create(ns_g_mctx, ns_g_entropy,
2999 "creating TKEY context");
3002 * Setup the server task, which is responsible for coordinating
3003 * startup and shutdown of the server.
3005 CHECKFATAL(isc_task_create(ns_g_taskmgr, 0, &server->task),
3006 "creating server task");
3007 isc_task_setname(server->task, "server", server);
3008 CHECKFATAL(isc_task_onshutdown(server->task, shutdown_server, server),
3009 "isc_task_onshutdown");
3010 CHECKFATAL(isc_app_onrun(ns_g_mctx, server->task, run_server, server),
3013 server->interface_timer = NULL;
3014 server->heartbeat_timer = NULL;
3016 server->interface_interval = 0;
3017 server->heartbeat_interval = 0;
3019 CHECKFATAL(dns_zonemgr_create(ns_g_mctx, ns_g_taskmgr, ns_g_timermgr,
3020 ns_g_socketmgr, &server->zonemgr),
3021 "dns_zonemgr_create");
3023 server->statsfile = isc_mem_strdup(server->mctx, "named.stats");
3024 CHECKFATAL(server->statsfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
3026 server->querystats = NULL;
3028 server->dumpfile = isc_mem_strdup(server->mctx, "named_dump.db");
3029 CHECKFATAL(server->dumpfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
3032 server->recfile = isc_mem_strdup(server->mctx, "named.recursing");
3033 CHECKFATAL(server->recfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
3036 server->hostname_set = ISC_FALSE;
3037 server->hostname = NULL;
3038 server->version_set = ISC_FALSE;
3039 server->version = NULL;
3040 server->server_usehostname = ISC_FALSE;
3041 server->server_id = NULL;
3043 CHECKFATAL(dns_stats_alloccounters(ns_g_mctx, &server->querystats),
3044 "dns_stats_alloccounters");
3046 server->flushonshutdown = ISC_FALSE;
3047 server->log_queries = ISC_FALSE;
3049 server->controls = NULL;
3050 CHECKFATAL(ns_controls_create(server, &server->controls),
3051 "ns_controls_create");
3052 server->dispatchgen = 0;
3053 ISC_LIST_INIT(server->dispatches);
3055 server->magic = NS_SERVER_MAGIC;
3060 ns_server_destroy(ns_server_t **serverp) {
3061 ns_server_t *server = *serverp;
3062 REQUIRE(NS_SERVER_VALID(server));
3064 ns_controls_destroy(&server->controls);
3066 dns_stats_freecounters(server->mctx, &server->querystats);
3068 isc_mem_free(server->mctx, server->statsfile);
3069 isc_mem_free(server->mctx, server->dumpfile);
3070 isc_mem_free(server->mctx, server->recfile);
3072 if (server->version != NULL)
3073 isc_mem_free(server->mctx, server->version);
3074 if (server->hostname != NULL)
3075 isc_mem_free(server->mctx, server->hostname);
3076 if (server->server_id != NULL)
3077 isc_mem_free(server->mctx, server->server_id);
3079 dns_zonemgr_detach(&server->zonemgr);
3081 if (server->tkeyctx != NULL)
3082 dns_tkeyctx_destroy(&server->tkeyctx);
3086 isc_event_free(&server->reload_event);
3088 INSIST(ISC_LIST_EMPTY(server->viewlist));
3090 dns_aclenv_destroy(&server->aclenv);
3092 isc_quota_destroy(&server->recursionquota);
3093 isc_quota_destroy(&server->tcpquota);
3094 isc_quota_destroy(&server->xfroutquota);
3097 isc_mem_put(server->mctx, server, sizeof(*server));
3102 fatal(const char *msg, isc_result_t result) {
3103 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3104 ISC_LOG_CRITICAL, "%s: %s", msg,
3105 isc_result_totext(result));
3106 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3107 ISC_LOG_CRITICAL, "exiting (due to fatal error)");
3112 start_reserved_dispatches(ns_server_t *server) {
3114 REQUIRE(NS_SERVER_VALID(server));
3116 server->dispatchgen++;
3120 end_reserved_dispatches(ns_server_t *server, isc_boolean_t all) {
3121 ns_dispatch_t *dispatch, *nextdispatch;
3123 REQUIRE(NS_SERVER_VALID(server));
3125 for (dispatch = ISC_LIST_HEAD(server->dispatches);
3127 dispatch = nextdispatch) {
3128 nextdispatch = ISC_LIST_NEXT(dispatch, link);
3129 if (!all && server->dispatchgen == dispatch-> dispatchgen)
3131 ISC_LIST_UNLINK(server->dispatches, dispatch, link);
3132 dns_dispatch_detach(&dispatch->dispatch);
3133 isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
3138 ns_add_reserved_dispatch(ns_server_t *server, const isc_sockaddr_t *addr) {
3139 ns_dispatch_t *dispatch;
3141 char addrbuf[ISC_SOCKADDR_FORMATSIZE];
3142 isc_result_t result;
3143 unsigned int attrs, attrmask;
3145 REQUIRE(NS_SERVER_VALID(server));
3147 port = isc_sockaddr_getport(addr);
3148 if (port == 0 || port >= 1024)
3151 for (dispatch = ISC_LIST_HEAD(server->dispatches);
3153 dispatch = ISC_LIST_NEXT(dispatch, link)) {
3154 if (isc_sockaddr_equal(&dispatch->addr, addr))
3157 if (dispatch != NULL) {
3158 dispatch->dispatchgen = server->dispatchgen;
3162 dispatch = isc_mem_get(server->mctx, sizeof(*dispatch));
3163 if (dispatch == NULL) {
3164 result = ISC_R_NOMEMORY;
3168 dispatch->addr = *addr;
3169 dispatch->dispatchgen = server->dispatchgen;
3170 dispatch->dispatch = NULL;
3173 attrs |= DNS_DISPATCHATTR_UDP;
3174 switch (isc_sockaddr_pf(addr)) {
3176 attrs |= DNS_DISPATCHATTR_IPV4;
3179 attrs |= DNS_DISPATCHATTR_IPV6;
3182 result = ISC_R_NOTIMPLEMENTED;
3186 attrmask |= DNS_DISPATCHATTR_UDP;
3187 attrmask |= DNS_DISPATCHATTR_TCP;
3188 attrmask |= DNS_DISPATCHATTR_IPV4;
3189 attrmask |= DNS_DISPATCHATTR_IPV6;
3191 result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
3192 ns_g_taskmgr, &dispatch->addr, 4096,
3193 1000, 32768, 16411, 16433,
3194 attrs, attrmask, &dispatch->dispatch);
3195 if (result != ISC_R_SUCCESS)
3198 ISC_LIST_INITANDPREPEND(server->dispatches, dispatch, link);
3203 if (dispatch != NULL)
3204 isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
3205 isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf));
3206 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3207 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
3208 "unable to create dispatch for reserved port %s: %s",
3209 addrbuf, isc_result_totext(result));
3214 loadconfig(ns_server_t *server) {
3215 isc_result_t result;
3216 start_reserved_dispatches(server);
3217 result = load_configuration(ns_g_lwresdonly ?
3218 lwresd_g_conffile : ns_g_conffile,
3220 if (result == ISC_R_SUCCESS)
3221 end_reserved_dispatches(server, ISC_FALSE);
3223 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3224 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
3225 "reloading configuration failed: %s",
3226 isc_result_totext(result));
3231 reload(ns_server_t *server) {
3232 isc_result_t result;
3233 CHECK(loadconfig(server));
3235 result = load_zones(server, ISC_FALSE);
3236 if (result != ISC_R_SUCCESS) {
3237 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3238 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
3239 "reloading zones failed: %s",
3240 isc_result_totext(result));
3247 reconfig(ns_server_t *server) {
3248 isc_result_t result;
3249 CHECK(loadconfig(server));
3251 result = load_new_zones(server, ISC_FALSE);
3252 if (result != ISC_R_SUCCESS) {
3253 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3254 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
3255 "loading new zones failed: %s",
3256 isc_result_totext(result));
3262 * Handle a reload event (from SIGHUP).
3265 ns_server_reload(isc_task_t *task, isc_event_t *event) {
3266 ns_server_t *server = (ns_server_t *)event->ev_arg;
3268 INSIST(task = server->task);
3271 (void)reload(server);
3273 LOCK(&server->reload_event_lock);
3274 INSIST(server->reload_event == NULL);
3275 server->reload_event = event;
3276 UNLOCK(&server->reload_event_lock);
3280 ns_server_reloadwanted(ns_server_t *server) {
3281 LOCK(&server->reload_event_lock);
3282 if (server->reload_event != NULL)
3283 isc_task_send(server->task, &server->reload_event);
3284 UNLOCK(&server->reload_event_lock);
3288 next_token(char **stringp, const char *delim) {
3292 res = strsep(stringp, delim);
3295 } while (*res == '\0');
3300 * Find the zone specified in the control channel command 'args',
3301 * if any. If a zone is specified, point '*zonep' at it, otherwise
3302 * set '*zonep' to NULL.
3305 zone_from_args(ns_server_t *server, char *args, dns_zone_t **zonep) {
3307 const char *zonetxt;
3309 const char *viewtxt = NULL;
3310 dns_fixedname_t name;
3311 isc_result_t result;
3313 dns_view_t *view = NULL;
3314 dns_rdataclass_t rdclass;
3316 REQUIRE(zonep != NULL && *zonep == NULL);
3320 /* Skip the command name. */
3321 ptr = next_token(&input, " \t");
3323 return (ISC_R_UNEXPECTEDEND);
3325 /* Look for the zone name. */
3326 zonetxt = next_token(&input, " \t");
3327 if (zonetxt == NULL)
3328 return (ISC_R_SUCCESS);
3330 /* Look for the optional class name. */
3331 classtxt = next_token(&input, " \t");
3332 if (classtxt != NULL) {
3333 /* Look for the optional view name. */
3334 viewtxt = next_token(&input, " \t");
3337 isc_buffer_init(&buf, zonetxt, strlen(zonetxt));
3338 isc_buffer_add(&buf, strlen(zonetxt));
3339 dns_fixedname_init(&name);
3340 result = dns_name_fromtext(dns_fixedname_name(&name),
3341 &buf, dns_rootname, ISC_FALSE, NULL);
3342 if (result != ISC_R_SUCCESS)
3345 if (classtxt != NULL) {
3348 r.length = strlen(classtxt);
3349 result = dns_rdataclass_fromtext(&rdclass, &r);
3350 if (result != ISC_R_SUCCESS)
3353 rdclass = dns_rdataclass_in;
3356 if (viewtxt == NULL)
3357 viewtxt = "_default";
3358 result = dns_viewlist_find(&server->viewlist, viewtxt,
3360 if (result != ISC_R_SUCCESS)
3363 result = dns_zt_find(view->zonetable, dns_fixedname_name(&name),
3365 /* Partial match? */
3366 if (result != ISC_R_SUCCESS && *zonep != NULL)
3367 dns_zone_detach(zonep);
3368 dns_view_detach(&view);
3374 * Act on a "retransfer" command from the command channel.
3377 ns_server_retransfercommand(ns_server_t *server, char *args) {
3378 isc_result_t result;
3379 dns_zone_t *zone = NULL;
3380 dns_zonetype_t type;
3382 result = zone_from_args(server, args, &zone);
3383 if (result != ISC_R_SUCCESS)
3386 return (ISC_R_UNEXPECTEDEND);
3387 type = dns_zone_gettype(zone);
3388 if (type == dns_zone_slave || type == dns_zone_stub)
3389 dns_zone_forcereload(zone);
3391 result = ISC_R_NOTFOUND;
3392 dns_zone_detach(&zone);
3397 * Act on a "reload" command from the command channel.
3400 ns_server_reloadcommand(ns_server_t *server, char *args, isc_buffer_t *text) {
3401 isc_result_t result;
3402 dns_zone_t *zone = NULL;
3403 dns_zonetype_t type;
3404 const char *msg = NULL;
3406 result = zone_from_args(server, args, &zone);
3407 if (result != ISC_R_SUCCESS)
3410 result = reload(server);
3411 if (result == ISC_R_SUCCESS)
3412 msg = "server reload successful";
3414 type = dns_zone_gettype(zone);
3415 if (type == dns_zone_slave || type == dns_zone_stub) {
3416 dns_zone_refresh(zone);
3417 msg = "zone refresh queued";
3419 result = dns_zone_load(zone);
3420 dns_zone_detach(&zone);
3423 msg = "zone reload successful";
3425 case DNS_R_CONTINUE:
3426 msg = "zone reload queued";
3427 result = ISC_R_SUCCESS;
3429 case DNS_R_UPTODATE:
3430 msg = "zone reload up-to-date";
3431 result = ISC_R_SUCCESS;
3434 /* failure message will be generated by rndc */
3439 if (msg != NULL && strlen(msg) < isc_buffer_availablelength(text))
3440 isc_buffer_putmem(text, (const unsigned char *)msg,
3446 * Act on a "reconfig" command from the command channel.
3449 ns_server_reconfigcommand(ns_server_t *server, char *args) {
3453 return (ISC_R_SUCCESS);
3457 * Act on a "refresh" command from the command channel.
3460 ns_server_refreshcommand(ns_server_t *server, char *args, isc_buffer_t *text) {
3461 isc_result_t result;
3462 dns_zone_t *zone = NULL;
3463 const unsigned char msg1[] = "zone refresh queued";
3464 const unsigned char msg2[] = "not a slave or stub zone";
3465 dns_zonetype_t type;
3467 result = zone_from_args(server, args, &zone);
3468 if (result != ISC_R_SUCCESS)
3471 return (ISC_R_UNEXPECTEDEND);
3473 type = dns_zone_gettype(zone);
3474 if (type == dns_zone_slave || type == dns_zone_stub) {
3475 dns_zone_refresh(zone);
3476 dns_zone_detach(&zone);
3477 if (sizeof(msg1) <= isc_buffer_availablelength(text))
3478 isc_buffer_putmem(text, msg1, sizeof(msg1));
3479 return (ISC_R_SUCCESS);
3482 dns_zone_detach(&zone);
3483 if (sizeof(msg2) <= isc_buffer_availablelength(text))
3484 isc_buffer_putmem(text, msg2, sizeof(msg2));
3485 return (ISC_R_FAILURE);
3489 ns_server_togglequerylog(ns_server_t *server) {
3490 server->log_queries = server->log_queries ? ISC_FALSE : ISC_TRUE;
3492 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3493 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
3494 "query logging is now %s",
3495 server->log_queries ? "on" : "off");
3496 return (ISC_R_SUCCESS);
3500 ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
3501 ns_aclconfctx_t *actx,
3502 isc_mem_t *mctx, ns_listenlist_t **target)
3504 isc_result_t result;
3505 const cfg_listelt_t *element;
3506 ns_listenlist_t *dlist = NULL;
3508 REQUIRE(target != NULL && *target == NULL);
3510 result = ns_listenlist_create(mctx, &dlist);
3511 if (result != ISC_R_SUCCESS)
3514 for (element = cfg_list_first(listenlist);
3516 element = cfg_list_next(element))
3518 ns_listenelt_t *delt = NULL;
3519 const cfg_obj_t *listener = cfg_listelt_value(element);
3520 result = ns_listenelt_fromconfig(listener, config, actx,
3522 if (result != ISC_R_SUCCESS)
3524 ISC_LIST_APPEND(dlist->elts, delt, link);
3527 return (ISC_R_SUCCESS);
3530 ns_listenlist_detach(&dlist);
3535 * Create a listen list from the corresponding configuration
3539 ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
3540 ns_aclconfctx_t *actx,
3541 isc_mem_t *mctx, ns_listenelt_t **target)
3543 isc_result_t result;
3544 const cfg_obj_t *portobj;
3546 ns_listenelt_t *delt = NULL;
3547 REQUIRE(target != NULL && *target == NULL);
3549 portobj = cfg_tuple_get(listener, "port");
3550 if (!cfg_obj_isuint32(portobj)) {
3551 if (ns_g_port != 0) {
3554 result = ns_config_getport(config, &port);
3555 if (result != ISC_R_SUCCESS)
3559 if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
3560 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
3561 "port value '%u' is out of range",
3562 cfg_obj_asuint32(portobj));
3563 return (ISC_R_RANGE);
3565 port = (in_port_t)cfg_obj_asuint32(portobj);
3568 result = ns_listenelt_create(mctx, port, NULL, &delt);
3569 if (result != ISC_R_SUCCESS)
3572 result = ns_acl_fromconfig(cfg_tuple_get(listener, "acl"),
3573 config, actx, mctx, &delt->acl);
3574 if (result != ISC_R_SUCCESS) {
3575 ns_listenelt_destroy(delt);
3579 return (ISC_R_SUCCESS);
3583 ns_server_dumpstats(ns_server_t *server) {
3584 isc_result_t result;
3585 dns_zone_t *zone, *next;
3591 isc_stdtime_get(&now);
3593 CHECKMF(isc_stdio_open(server->statsfile, "a", &fp),
3594 "could not open statistics dump file", server->statsfile);
3596 ncounters = DNS_STATS_NCOUNTERS;
3597 fprintf(fp, "+++ Statistics Dump +++ (%lu)\n", (unsigned long)now);
3599 for (i = 0; i < ncounters; i++)
3600 fprintf(fp, "%s %" ISC_PRINT_QUADFORMAT "u\n",
3601 dns_statscounter_names[i],
3602 server->querystats[i]);
3605 for (result = dns_zone_first(server->zonemgr, &zone);
3606 result == ISC_R_SUCCESS;
3607 next = NULL, result = dns_zone_next(zone, &next), zone = next)
3609 isc_uint64_t *zonestats = dns_zone_getstatscounters(zone);
3610 if (zonestats != NULL) {
3611 char zonename[DNS_NAME_FORMATSIZE];
3615 dns_name_format(dns_zone_getorigin(zone),
3616 zonename, sizeof(zonename));
3617 view = dns_zone_getview(zone);
3618 viewname = view->name;
3619 for (i = 0; i < ncounters; i++) {
3620 fprintf(fp, "%s %" ISC_PRINT_QUADFORMAT
3622 dns_statscounter_names[i],
3625 if (strcmp(viewname, "_default") != 0)
3626 fprintf(fp, " %s", viewname);
3631 if (result == ISC_R_NOMORE)
3632 result = ISC_R_SUCCESS;
3635 fprintf(fp, "--- Statistics Dump --- (%lu)\n", (unsigned long)now);
3639 (void)isc_stdio_close(fp);
3644 add_zone_tolist(dns_zone_t *zone, void *uap) {
3645 struct dumpcontext *dctx = uap;
3646 struct zonelistentry *zle;
3648 zle = isc_mem_get(dctx->mctx, sizeof *zle);
3650 return (ISC_R_NOMEMORY);
3652 dns_zone_attach(zone, &zle->zone);
3653 ISC_LINK_INIT(zle, link);
3654 ISC_LIST_APPEND(ISC_LIST_TAIL(dctx->viewlist)->zonelist, zle, link);
3655 return (ISC_R_SUCCESS);
3659 add_view_tolist(struct dumpcontext *dctx, dns_view_t *view) {
3660 struct viewlistentry *vle;
3661 isc_result_t result = ISC_R_SUCCESS;
3664 * Prevent duplicate views.
3666 for (vle = ISC_LIST_HEAD(dctx->viewlist);
3668 vle = ISC_LIST_NEXT(vle, link))
3669 if (vle->view == view)
3670 return (ISC_R_SUCCESS);
3672 vle = isc_mem_get(dctx->mctx, sizeof *vle);
3674 return (ISC_R_NOMEMORY);
3676 dns_view_attach(view, &vle->view);
3677 ISC_LINK_INIT(vle, link);
3678 ISC_LIST_INIT(vle->zonelist);
3679 ISC_LIST_APPEND(dctx->viewlist, vle, link);
3680 if (dctx->dumpzones)
3681 result = dns_zt_apply(view->zonetable, ISC_TRUE,
3682 add_zone_tolist, dctx);
3687 dumpcontext_destroy(struct dumpcontext *dctx) {
3688 struct viewlistentry *vle;
3689 struct zonelistentry *zle;
3691 vle = ISC_LIST_HEAD(dctx->viewlist);
3692 while (vle != NULL) {
3693 ISC_LIST_UNLINK(dctx->viewlist, vle, link);
3694 zle = ISC_LIST_HEAD(vle->zonelist);
3695 while (zle != NULL) {
3696 ISC_LIST_UNLINK(vle->zonelist, zle, link);
3697 dns_zone_detach(&zle->zone);
3698 isc_mem_put(dctx->mctx, zle, sizeof *zle);
3699 zle = ISC_LIST_HEAD(vle->zonelist);
3701 dns_view_detach(&vle->view);
3702 isc_mem_put(dctx->mctx, vle, sizeof *vle);
3703 vle = ISC_LIST_HEAD(dctx->viewlist);
3705 if (dctx->version != NULL)
3706 dns_db_closeversion(dctx->db, &dctx->version, ISC_FALSE);
3707 if (dctx->db != NULL)
3708 dns_db_detach(&dctx->db);
3709 if (dctx->cache != NULL)
3710 dns_db_detach(&dctx->cache);
3711 if (dctx->task != NULL)
3712 isc_task_detach(&dctx->task);
3713 if (dctx->fp != NULL)
3714 (void)isc_stdio_close(dctx->fp);
3715 if (dctx->mdctx != NULL)
3716 dns_dumpctx_detach(&dctx->mdctx);
3717 isc_mem_put(dctx->mctx, dctx, sizeof *dctx);
3721 dumpdone(void *arg, isc_result_t result) {
3722 struct dumpcontext *dctx = arg;
3724 const dns_master_style_t *style;
3726 if (result != ISC_R_SUCCESS)
3728 if (dctx->mdctx != NULL)
3729 dns_dumpctx_detach(&dctx->mdctx);
3730 if (dctx->view == NULL) {
3731 dctx->view = ISC_LIST_HEAD(dctx->viewlist);
3732 if (dctx->view == NULL)
3734 INSIST(dctx->zone == NULL);
3738 fprintf(dctx->fp, ";\n; Start view %s\n;\n", dctx->view->view->name);
3740 if (dctx->zone == NULL && dctx->cache == NULL && dctx->dumpcache) {
3741 style = &dns_master_style_cache;
3742 /* start cache dump */
3743 if (dctx->view->view->cachedb != NULL)
3744 dns_db_attach(dctx->view->view->cachedb, &dctx->cache);
3745 if (dctx->cache != NULL) {
3747 fprintf(dctx->fp, ";\n; Cache dump of view '%s'\n;\n",
3748 dctx->view->view->name);
3749 result = dns_master_dumptostreaminc(dctx->mctx,
3755 if (result == DNS_R_CONTINUE)
3757 if (result == ISC_R_NOTIMPLEMENTED)
3758 fprintf(dctx->fp, "; %s\n",
3759 dns_result_totext(result));
3760 else if (result != ISC_R_SUCCESS)
3764 if (dctx->cache != NULL) {
3765 dns_adb_dump(dctx->view->view->adb, dctx->fp);
3766 dns_db_detach(&dctx->cache);
3768 if (dctx->dumpzones) {
3769 style = &dns_master_style_full;
3771 if (dctx->version != NULL)
3772 dns_db_closeversion(dctx->db, &dctx->version,
3774 if (dctx->db != NULL)
3775 dns_db_detach(&dctx->db);
3776 if (dctx->zone == NULL)
3777 dctx->zone = ISC_LIST_HEAD(dctx->view->zonelist);
3779 dctx->zone = ISC_LIST_NEXT(dctx->zone, link);
3780 if (dctx->zone != NULL) {
3781 /* start zone dump */
3782 dns_zone_name(dctx->zone->zone, buf, sizeof(buf));
3783 fprintf(dctx->fp, ";\n; Zone dump of '%s'\n;\n", buf);
3784 result = dns_zone_getdb(dctx->zone->zone, &dctx->db);
3785 if (result != ISC_R_SUCCESS) {
3786 fprintf(dctx->fp, "; %s\n",
3787 dns_result_totext(result));
3790 dns_db_currentversion(dctx->db, &dctx->version);
3791 result = dns_master_dumptostreaminc(dctx->mctx,
3798 if (result == DNS_R_CONTINUE)
3800 if (result == ISC_R_NOTIMPLEMENTED) {
3801 fprintf(dctx->fp, "; %s\n",
3802 dns_result_totext(result));
3803 result = ISC_R_SUCCESS;
3806 if (result != ISC_R_SUCCESS)
3810 if (dctx->view != NULL)
3811 dctx->view = ISC_LIST_NEXT(dctx->view, link);
3812 if (dctx->view != NULL)
3815 fprintf(dctx->fp, "; Dump complete\n");
3816 result = isc_stdio_flush(dctx->fp);
3817 if (result == ISC_R_SUCCESS)
3818 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3819 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
3822 if (result != ISC_R_SUCCESS)
3823 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3824 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
3825 "dumpdb failed: %s", dns_result_totext(result));
3826 dumpcontext_destroy(dctx);
3830 ns_server_dumpdb(ns_server_t *server, char *args) {
3831 struct dumpcontext *dctx = NULL;
3833 isc_result_t result;
3837 /* Skip the command name. */
3838 ptr = next_token(&args, " \t");
3840 return (ISC_R_UNEXPECTEDEND);
3842 dctx = isc_mem_get(server->mctx, sizeof(*dctx));
3844 return (ISC_R_NOMEMORY);
3846 dctx->mctx = server->mctx;
3847 dctx->dumpcache = ISC_TRUE;
3848 dctx->dumpzones = ISC_FALSE;
3850 ISC_LIST_INIT(dctx->viewlist);
3858 dctx->version = NULL;
3859 isc_task_attach(server->task, &dctx->task);
3861 CHECKMF(isc_stdio_open(server->dumpfile, "w", &dctx->fp),
3862 "could not open dump file", server->dumpfile);
3864 sep = (args == NULL) ? "" : ": ";
3865 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3866 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
3867 "dumpdb started%s%s", sep, (args != NULL) ? args : "");
3869 ptr = next_token(&args, " \t");
3870 if (ptr != NULL && strcmp(ptr, "-all") == 0) {
3871 dctx->dumpzones = ISC_TRUE;
3872 dctx->dumpcache = ISC_TRUE;
3873 ptr = next_token(&args, " \t");
3874 } else if (ptr != NULL && strcmp(ptr, "-cache") == 0) {
3875 dctx->dumpzones = ISC_FALSE;
3876 dctx->dumpcache = ISC_TRUE;
3877 ptr = next_token(&args, " \t");
3878 } else if (ptr != NULL && strcmp(ptr, "-zones") == 0) {
3879 dctx->dumpzones = ISC_TRUE;
3880 dctx->dumpcache = ISC_FALSE;
3881 ptr = next_token(&args, " \t");
3885 for (view = ISC_LIST_HEAD(server->viewlist);
3887 view = ISC_LIST_NEXT(view, link))
3889 if (ptr != NULL && strcmp(view->name, ptr) != 0)
3891 CHECK(add_view_tolist(dctx, view));
3894 ptr = next_token(&args, " \t");
3898 dumpdone(dctx, ISC_R_SUCCESS);
3899 return (ISC_R_SUCCESS);
3903 dumpcontext_destroy(dctx);
3908 ns_server_dumprecursing(ns_server_t *server) {
3910 isc_result_t result;
3912 CHECKMF(isc_stdio_open(server->recfile, "w", &fp),
3913 "could not open dump file", server->recfile);
3914 fprintf(fp,";\n; Recursing Queries\n;\n");
3915 ns_interfacemgr_dumprecursing(fp, server->interfacemgr);
3916 fprintf(fp, "; Dump complete\n");
3920 result = isc_stdio_close(fp);
3925 ns_server_setdebuglevel(ns_server_t *server, char *args) {
3933 /* Skip the command name. */
3934 ptr = next_token(&args, " \t");
3936 return (ISC_R_UNEXPECTEDEND);
3938 /* Look for the new level name. */
3939 levelstr = next_token(&args, " \t");
3940 if (levelstr == NULL) {
3941 if (ns_g_debuglevel < 99)
3944 newlevel = strtol(levelstr, &endp, 10);
3945 if (*endp != '\0' || newlevel < 0 || newlevel > 99)
3946 return (ISC_R_RANGE);
3947 ns_g_debuglevel = (unsigned int)newlevel;
3949 isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
3950 return (ISC_R_SUCCESS);
3954 ns_server_flushcache(ns_server_t *server, char *args) {
3955 char *ptr, *viewname;
3957 isc_boolean_t flushed = ISC_FALSE;
3958 isc_result_t result;
3960 /* Skip the command name. */
3961 ptr = next_token(&args, " \t");
3963 return (ISC_R_UNEXPECTEDEND);
3965 /* Look for the view name. */
3966 viewname = next_token(&args, " \t");
3968 result = isc_task_beginexclusive(server->task);
3969 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3970 for (view = ISC_LIST_HEAD(server->viewlist);
3972 view = ISC_LIST_NEXT(view, link))
3974 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
3976 result = dns_view_flushcache(view);
3977 if (result != ISC_R_SUCCESS)
3982 result = ISC_R_SUCCESS;
3984 result = ISC_R_FAILURE;
3986 isc_task_endexclusive(server->task);
3991 ns_server_flushname(ns_server_t *server, char *args) {
3992 char *ptr, *target, *viewname;
3994 isc_boolean_t flushed = ISC_FALSE;
3995 isc_result_t result;
3997 dns_fixedname_t fixed;
4000 /* Skip the command name. */
4001 ptr = next_token(&args, " \t");
4003 return (ISC_R_UNEXPECTEDEND);
4005 /* Find the domain name to flush. */
4006 target = next_token(&args, " \t");
4008 return (ISC_R_UNEXPECTEDEND);
4010 isc_buffer_init(&b, target, strlen(target));
4011 isc_buffer_add(&b, strlen(target));
4012 dns_fixedname_init(&fixed);
4013 name = dns_fixedname_name(&fixed);
4014 result = dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL);
4015 if (result != ISC_R_SUCCESS)
4018 /* Look for the view name. */
4019 viewname = next_token(&args, " \t");
4021 result = isc_task_beginexclusive(server->task);
4022 RUNTIME_CHECK(result == ISC_R_SUCCESS);
4024 for (view = ISC_LIST_HEAD(server->viewlist);
4026 view = ISC_LIST_NEXT(view, link))
4028 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
4030 result = dns_view_flushname(view, name);
4031 if (result != ISC_R_SUCCESS)
4032 flushed = ISC_FALSE;
4035 result = ISC_R_SUCCESS;
4037 result = ISC_R_FAILURE;
4038 isc_task_endexclusive(server->task);
4043 ns_server_status(ns_server_t *server, isc_buffer_t *text) {
4044 int zonecount, xferrunning, xferdeferred, soaqueries;
4047 zonecount = dns_zonemgr_getcount(server->zonemgr, DNS_ZONESTATE_ANY);
4048 xferrunning = dns_zonemgr_getcount(server->zonemgr,
4049 DNS_ZONESTATE_XFERRUNNING);
4050 xferdeferred = dns_zonemgr_getcount(server->zonemgr,
4051 DNS_ZONESTATE_XFERDEFERRED);
4052 soaqueries = dns_zonemgr_getcount(server->zonemgr,
4053 DNS_ZONESTATE_SOAQUERY);
4054 n = snprintf((char *)isc_buffer_used(text),
4055 isc_buffer_availablelength(text),
4056 "number of zones: %u\n"
4058 "xfers running: %u\n"
4059 "xfers deferred: %u\n"
4060 "soa queries in progress: %u\n"
4061 "query logging is %s\n"
4062 "recursive clients: %d/%d\n"
4063 "tcp clients: %d/%d\n"
4064 "server is up and running",
4065 zonecount, ns_g_debuglevel, xferrunning, xferdeferred,
4066 soaqueries, server->log_queries ? "ON" : "OFF",
4067 server->recursionquota.used, server->recursionquota.max,
4068 server->tcpquota.used, server->tcpquota.max);
4069 if (n >= isc_buffer_availablelength(text))
4070 return (ISC_R_NOSPACE);
4071 isc_buffer_add(text, n);
4072 return (ISC_R_SUCCESS);
4076 * Act on a "freeze" or "unfreeze" command from the command channel.
4079 ns_server_freeze(ns_server_t *server, isc_boolean_t freeze, char *args) {
4080 isc_result_t result;
4081 dns_zone_t *zone = NULL;
4082 dns_zonetype_t type;
4083 char classstr[DNS_RDATACLASS_FORMATSIZE];
4084 char zonename[DNS_NAME_FORMATSIZE];
4087 const char *vname, *sep;
4088 isc_boolean_t frozen;
4090 result = zone_from_args(server, args, &zone);
4091 if (result != ISC_R_SUCCESS)
4094 return (ISC_R_UNEXPECTEDEND);
4095 type = dns_zone_gettype(zone);
4096 if (type != dns_zone_master) {
4097 dns_zone_detach(&zone);
4098 return (ISC_R_NOTFOUND);
4101 frozen = dns_zone_getupdatedisabled(zone);
4104 result = DNS_R_FROZEN;
4105 if (result == ISC_R_SUCCESS)
4106 result = dns_zone_flush(zone);
4107 if (result == ISC_R_SUCCESS) {
4108 journal = dns_zone_getjournal(zone);
4109 if (journal != NULL)
4110 (void)isc_file_remove(journal);
4114 result = dns_zone_load(zone);
4115 if (result == DNS_R_CONTINUE ||
4116 result == DNS_R_UPTODATE)
4117 result = ISC_R_SUCCESS;
4120 if (result == ISC_R_SUCCESS)
4121 dns_zone_setupdatedisabled(zone, freeze);
4123 view = dns_zone_getview(zone);
4124 if (strcmp(view->name, "_bind") == 0 ||
4125 strcmp(view->name, "_default") == 0)
4133 dns_rdataclass_format(dns_zone_getclass(zone), classstr,
4135 dns_name_format(dns_zone_getorigin(zone),
4136 zonename, sizeof(zonename));
4137 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4138 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4139 "%s zone '%s/%s'%s%s: %s",
4140 freeze ? "freezing" : "unfreezing",
4141 zonename, classstr, sep, vname,
4142 isc_result_totext(result));
4143 dns_zone_detach(&zone);
4149 * This function adds a message for rndc to echo if named
4150 * is managed by smf and is also running chroot.
4153 ns_smf_add_message(isc_buffer_t *text) {
4156 n = snprintf((char *)isc_buffer_used(text),
4157 isc_buffer_availablelength(text),
4158 "use svcadm(1M) to manage named");
4159 if (n >= isc_buffer_availablelength(text))
4160 return (ISC_R_NOSPACE);
4161 isc_buffer_add(text, n);
4162 return (ISC_R_SUCCESS);
4164 #endif /* HAVE_LIBSCF */