2 * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
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 1.419.18.57 2007/08/28 07:20:01 tbox Exp $ */
27 #include <isc/base64.h>
29 #include <isc/entropy.h>
33 #include <isc/parseint.h>
34 #include <isc/print.h>
35 #include <isc/resource.h>
36 #include <isc/stdio.h>
37 #include <isc/string.h>
39 #include <isc/timer.h>
42 #include <isccfg/namedconf.h>
44 #include <bind9/check.h>
46 #include <dns/acache.h>
48 #include <dns/cache.h>
50 #include <dns/dispatch.h>
54 #include <dns/forward.h>
55 #include <dns/journal.h>
56 #include <dns/keytable.h>
58 #include <dns/master.h>
59 #include <dns/masterdump.h>
60 #include <dns/order.h>
62 #include <dns/portlist.h>
63 #include <dns/rdataclass.h>
64 #include <dns/rdataset.h>
65 #include <dns/rdatastruct.h>
66 #include <dns/resolver.h>
67 #include <dns/rootns.h>
68 #include <dns/secalg.h>
69 #include <dns/stats.h>
76 #include <dst/result.h>
78 #include <named/client.h>
79 #include <named/config.h>
80 #include <named/control.h>
81 #include <named/interfacemgr.h>
82 #include <named/log.h>
83 #include <named/logconf.h>
84 #include <named/lwresd.h>
85 #include <named/main.h>
87 #include <named/server.h>
88 #include <named/tkeyconf.h>
89 #include <named/tsigconf.h>
90 #include <named/zoneconf.h>
92 #include <named/ns_smf_globals.h>
97 * Check an operation for failure. Assumes that the function
98 * using it has a 'result' variable and a 'cleanup' label.
101 do { result = (op); \
102 if (result != ISC_R_SUCCESS) goto cleanup; \
105 #define CHECKM(op, msg) \
106 do { result = (op); \
107 if (result != ISC_R_SUCCESS) { \
108 isc_log_write(ns_g_lctx, \
109 NS_LOGCATEGORY_GENERAL, \
110 NS_LOGMODULE_SERVER, \
113 isc_result_totext(result)); \
118 #define CHECKMF(op, msg, file) \
119 do { result = (op); \
120 if (result != ISC_R_SUCCESS) { \
121 isc_log_write(ns_g_lctx, \
122 NS_LOGCATEGORY_GENERAL, \
123 NS_LOGMODULE_SERVER, \
125 "%s '%s': %s", msg, file, \
126 isc_result_totext(result)); \
131 #define CHECKFATAL(op, msg) \
132 do { result = (op); \
133 if (result != ISC_R_SUCCESS) \
134 fatal(msg, result); \
139 unsigned int dispatchgen;
140 dns_dispatch_t *dispatch;
141 ISC_LINK(struct ns_dispatch) link;
146 isc_boolean_t dumpcache;
147 isc_boolean_t dumpzones;
149 ISC_LIST(struct viewlistentry) viewlist;
150 struct viewlistentry *view;
151 struct zonelistentry *zone;
152 dns_dumpctx_t *mdctx;
156 dns_dbversion_t *version;
159 struct viewlistentry {
161 ISC_LINK(struct viewlistentry) link;
162 ISC_LIST(struct zonelistentry) zonelist;
165 struct zonelistentry {
167 ISC_LINK(struct zonelistentry) link;
171 * These zones should not leak onto the Internet.
173 static const struct {
175 isc_boolean_t rfc1918;
179 { "10.IN-ADDR.ARPA", ISC_TRUE },
180 { "16.172.IN-ADDR.ARPA", ISC_TRUE },
181 { "17.172.IN-ADDR.ARPA", ISC_TRUE },
182 { "18.172.IN-ADDR.ARPA", ISC_TRUE },
183 { "19.172.IN-ADDR.ARPA", ISC_TRUE },
184 { "20.172.IN-ADDR.ARPA", ISC_TRUE },
185 { "21.172.IN-ADDR.ARPA", ISC_TRUE },
186 { "22.172.IN-ADDR.ARPA", ISC_TRUE },
187 { "23.172.IN-ADDR.ARPA", ISC_TRUE },
188 { "24.172.IN-ADDR.ARPA", ISC_TRUE },
189 { "25.172.IN-ADDR.ARPA", ISC_TRUE },
190 { "26.172.IN-ADDR.ARPA", ISC_TRUE },
191 { "27.172.IN-ADDR.ARPA", ISC_TRUE },
192 { "28.172.IN-ADDR.ARPA", ISC_TRUE },
193 { "29.172.IN-ADDR.ARPA", ISC_TRUE },
194 { "30.172.IN-ADDR.ARPA", ISC_TRUE },
195 { "31.172.IN-ADDR.ARPA", ISC_TRUE },
196 { "168.192.IN-ADDR.ARPA", ISC_TRUE },
200 { "127.IN-ADDR.ARPA", ISC_FALSE }, /* LOOPBACK */
201 { "254.169.IN-ADDR.ARPA", ISC_FALSE }, /* LINK LOCAL */
202 { "2.0.192.IN-ADDR.ARPA", ISC_FALSE }, /* TEST NET */
203 { "255.255.255.255.IN-ADDR.ARPA", ISC_FALSE }, /* BROADCAST */
205 /* Local IPv6 Unicast Addresses */
206 { "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA", ISC_FALSE },
207 { "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA", ISC_FALSE },
208 /* LOCALLY ASSIGNED LOCAL ADDRES S SCOPE */
209 { "D.F.IP6.ARPA", ISC_FALSE },
210 { "8.E.F.IP6.ARPA", ISC_FALSE }, /* LINK LOCAL */
211 { "9.E.F.IP6.ARPA", ISC_FALSE }, /* LINK LOCAL */
212 { "A.E.F.IP6.ARPA", ISC_FALSE }, /* LINK LOCAL */
213 { "B.E.F.IP6.ARPA", ISC_FALSE }, /* LINK LOCAL */
219 fatal(const char *msg, isc_result_t result);
222 ns_server_reload(isc_task_t *task, isc_event_t *event);
225 ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
226 cfg_aclconfctx_t *actx,
227 isc_mem_t *mctx, ns_listenelt_t **target);
229 ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
230 cfg_aclconfctx_t *actx,
231 isc_mem_t *mctx, ns_listenlist_t **target);
234 configure_forward(const cfg_obj_t *config, dns_view_t *view, dns_name_t *origin,
235 const cfg_obj_t *forwarders, const cfg_obj_t *forwardtype);
238 configure_alternates(const cfg_obj_t *config, dns_view_t *view,
239 const cfg_obj_t *alternates);
242 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
243 const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
244 cfg_aclconfctx_t *aclconf);
247 end_reserved_dispatches(ns_server_t *server, isc_boolean_t all);
250 * Configure a single view ACL at '*aclp'. Get its configuration by
251 * calling 'getvcacl' (for per-view configuration) and maybe 'getscacl'
252 * (for a global default).
255 configure_view_acl(const cfg_obj_t *vconfig, const cfg_obj_t *config,
256 const char *aclname, cfg_aclconfctx_t *actx,
257 isc_mem_t *mctx, dns_acl_t **aclp)
260 const cfg_obj_t *maps[3];
261 const cfg_obj_t *aclobj = NULL;
265 dns_acl_detach(aclp);
267 maps[i++] = cfg_tuple_get(vconfig, "options");
268 if (config != NULL) {
269 const cfg_obj_t *options = NULL;
270 (void)cfg_map_get(config, "options", &options);
276 (void)ns_config_get(maps, aclname, &aclobj);
279 * No value available. *aclp == NULL.
281 return (ISC_R_SUCCESS);
283 result = cfg_acl_fromconfig(aclobj, config, ns_g_lctx,
290 configure_view_dnsseckey(const cfg_obj_t *vconfig, const cfg_obj_t *key,
291 dns_keytable_t *keytable, isc_mem_t *mctx)
293 dns_rdataclass_t viewclass;
294 dns_rdata_dnskey_t keystruct;
295 isc_uint32_t flags, proto, alg;
296 const char *keystr, *keynamestr;
297 unsigned char keydata[4096];
298 isc_buffer_t keydatabuf;
299 unsigned char rrdata[4096];
300 isc_buffer_t rrdatabuf;
302 dns_fixedname_t fkeyname;
304 isc_buffer_t namebuf;
306 dst_key_t *dstkey = NULL;
308 flags = cfg_obj_asuint32(cfg_tuple_get(key, "flags"));
309 proto = cfg_obj_asuint32(cfg_tuple_get(key, "protocol"));
310 alg = cfg_obj_asuint32(cfg_tuple_get(key, "algorithm"));
311 keyname = dns_fixedname_name(&fkeyname);
312 keynamestr = cfg_obj_asstring(cfg_tuple_get(key, "name"));
315 viewclass = dns_rdataclass_in;
317 const cfg_obj_t *classobj = cfg_tuple_get(vconfig, "class");
318 CHECK(ns_config_getclass(classobj, dns_rdataclass_in,
321 keystruct.common.rdclass = viewclass;
322 keystruct.common.rdtype = dns_rdatatype_dnskey;
324 * The key data in keystruct is not dynamically allocated.
326 keystruct.mctx = NULL;
328 ISC_LINK_INIT(&keystruct.common, link);
331 CHECKM(ISC_R_RANGE, "key flags");
333 CHECKM(ISC_R_RANGE, "key protocol");
335 CHECKM(ISC_R_RANGE, "key algorithm");
336 keystruct.flags = (isc_uint16_t)flags;
337 keystruct.protocol = (isc_uint8_t)proto;
338 keystruct.algorithm = (isc_uint8_t)alg;
340 isc_buffer_init(&keydatabuf, keydata, sizeof(keydata));
341 isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
343 keystr = cfg_obj_asstring(cfg_tuple_get(key, "key"));
344 CHECK(isc_base64_decodestring(keystr, &keydatabuf));
345 isc_buffer_usedregion(&keydatabuf, &r);
346 keystruct.datalen = r.length;
347 keystruct.data = r.base;
349 if ((keystruct.algorithm == DST_ALG_RSASHA1 ||
350 keystruct.algorithm == DST_ALG_RSAMD5) &&
351 r.length > 1 && r.base[0] == 1 && r.base[1] == 3)
352 cfg_obj_log(key, ns_g_lctx, ISC_LOG_WARNING,
353 "trusted key '%s' has a weak exponent",
356 CHECK(dns_rdata_fromstruct(NULL,
357 keystruct.common.rdclass,
358 keystruct.common.rdtype,
359 &keystruct, &rrdatabuf));
360 dns_fixedname_init(&fkeyname);
361 isc_buffer_init(&namebuf, keynamestr, strlen(keynamestr));
362 isc_buffer_add(&namebuf, strlen(keynamestr));
363 CHECK(dns_name_fromtext(keyname, &namebuf,
364 dns_rootname, ISC_FALSE,
366 CHECK(dst_key_fromdns(keyname, viewclass, &rrdatabuf,
369 CHECK(dns_keytable_add(keytable, &dstkey));
370 INSIST(dstkey == NULL);
371 return (ISC_R_SUCCESS);
374 if (result == DST_R_NOCRYPTO) {
375 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
376 "ignoring trusted key for '%s': no crypto support",
378 result = ISC_R_SUCCESS;
380 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
381 "configuring trusted key for '%s': %s",
382 keynamestr, isc_result_totext(result));
383 result = ISC_R_FAILURE;
387 dst_key_free(&dstkey);
393 * Configure DNSSEC keys for a view. Currently used only for
394 * the security roots.
396 * The per-view configuration values and the server-global defaults are read
397 * from 'vconfig' and 'config'. The variable to be configured is '*target'.
400 configure_view_dnsseckeys(const cfg_obj_t *vconfig, const cfg_obj_t *config,
401 isc_mem_t *mctx, dns_keytable_t **target)
404 const cfg_obj_t *keys = NULL;
405 const cfg_obj_t *voptions = NULL;
406 const cfg_listelt_t *element, *element2;
407 const cfg_obj_t *keylist;
408 const cfg_obj_t *key;
409 dns_keytable_t *keytable = NULL;
411 CHECK(dns_keytable_create(mctx, &keytable));
414 voptions = cfg_tuple_get(vconfig, "options");
417 if (voptions != NULL)
418 (void)cfg_map_get(voptions, "trusted-keys", &keys);
420 (void)cfg_map_get(config, "trusted-keys", &keys);
422 for (element = cfg_list_first(keys);
424 element = cfg_list_next(element))
426 keylist = cfg_listelt_value(element);
427 for (element2 = cfg_list_first(keylist);
429 element2 = cfg_list_next(element2))
431 key = cfg_listelt_value(element2);
432 CHECK(configure_view_dnsseckey(vconfig, key,
437 dns_keytable_detach(target);
438 *target = keytable; /* Transfer ownership. */
440 result = ISC_R_SUCCESS;
447 mustbesecure(const cfg_obj_t *mbs, dns_resolver_t *resolver)
449 const cfg_listelt_t *element;
450 const cfg_obj_t *obj;
452 dns_fixedname_t fixed;
458 dns_fixedname_init(&fixed);
459 name = dns_fixedname_name(&fixed);
460 for (element = cfg_list_first(mbs);
462 element = cfg_list_next(element))
464 obj = cfg_listelt_value(element);
465 str = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
466 isc_buffer_init(&b, str, strlen(str));
467 isc_buffer_add(&b, strlen(str));
468 CHECK(dns_name_fromtext(name, &b, dns_rootname,
470 value = cfg_obj_asboolean(cfg_tuple_get(obj, "value"));
471 CHECK(dns_resolver_setmustbesecure(resolver, name, value));
474 result = ISC_R_SUCCESS;
481 * Get a dispatch appropriate for the resolver of a given view.
484 get_view_querysource_dispatch(const cfg_obj_t **maps,
485 int af, dns_dispatch_t **dispatchp)
488 dns_dispatch_t *disp;
490 unsigned int attrs, attrmask;
491 const cfg_obj_t *obj = NULL;
494 * Make compiler happy.
496 result = ISC_R_FAILURE;
500 result = ns_config_get(maps, "query-source", &obj);
501 INSIST(result == ISC_R_SUCCESS);
504 result = ns_config_get(maps, "query-source-v6", &obj);
505 INSIST(result == ISC_R_SUCCESS);
511 sa = *(cfg_obj_assockaddr(obj));
512 INSIST(isc_sockaddr_pf(&sa) == af);
515 * If we don't support this address family, we're done!
519 result = isc_net_probeipv4();
522 result = isc_net_probeipv6();
527 if (result != ISC_R_SUCCESS)
528 return (ISC_R_SUCCESS);
531 * Try to find a dispatcher that we can share.
534 attrs |= DNS_DISPATCHATTR_UDP;
537 attrs |= DNS_DISPATCHATTR_IPV4;
540 attrs |= DNS_DISPATCHATTR_IPV6;
544 attrmask |= DNS_DISPATCHATTR_UDP;
545 attrmask |= DNS_DISPATCHATTR_TCP;
546 attrmask |= DNS_DISPATCHATTR_IPV4;
547 attrmask |= DNS_DISPATCHATTR_IPV6;
550 result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
551 ns_g_taskmgr, &sa, 4096,
552 1000, 32768, 16411, 16433,
553 attrs, attrmask, &disp);
554 if (result != ISC_R_SUCCESS) {
556 char buf[ISC_SOCKADDR_FORMATSIZE];
560 isc_sockaddr_any(&any);
563 isc_sockaddr_any6(&any);
566 if (isc_sockaddr_equal(&sa, &any))
567 return (ISC_R_SUCCESS);
568 isc_sockaddr_format(&sa, buf, sizeof(buf));
569 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
570 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
571 "could not get query source dispatcher (%s)",
578 return (ISC_R_SUCCESS);
582 configure_order(dns_order_t *order, const cfg_obj_t *ent) {
583 dns_rdataclass_t rdclass;
584 dns_rdatatype_t rdtype;
585 const cfg_obj_t *obj;
586 dns_fixedname_t fixed;
587 unsigned int mode = 0;
591 isc_boolean_t addroot;
593 result = ns_config_getclass(cfg_tuple_get(ent, "class"),
594 dns_rdataclass_any, &rdclass);
595 if (result != ISC_R_SUCCESS)
598 result = ns_config_gettype(cfg_tuple_get(ent, "type"),
599 dns_rdatatype_any, &rdtype);
600 if (result != ISC_R_SUCCESS)
603 obj = cfg_tuple_get(ent, "name");
604 if (cfg_obj_isstring(obj))
605 str = cfg_obj_asstring(obj);
608 addroot = ISC_TF(strcmp(str, "*") == 0);
609 isc_buffer_init(&b, str, strlen(str));
610 isc_buffer_add(&b, strlen(str));
611 dns_fixedname_init(&fixed);
612 result = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
613 dns_rootname, ISC_FALSE, NULL);
614 if (result != ISC_R_SUCCESS)
617 obj = cfg_tuple_get(ent, "ordering");
618 INSIST(cfg_obj_isstring(obj));
619 str = cfg_obj_asstring(obj);
620 if (!strcasecmp(str, "fixed"))
621 mode = DNS_RDATASETATTR_FIXEDORDER;
622 else if (!strcasecmp(str, "random"))
623 mode = DNS_RDATASETATTR_RANDOMIZE;
624 else if (!strcasecmp(str, "cyclic"))
630 * "*" should match everything including the root (BIND 8 compat).
631 * As dns_name_matcheswildcard(".", "*.") returns FALSE add a
632 * explicit entry for "." when the name is "*".
635 result = dns_order_add(order, dns_rootname,
636 rdtype, rdclass, mode);
637 if (result != ISC_R_SUCCESS)
641 return (dns_order_add(order, dns_fixedname_name(&fixed),
642 rdtype, rdclass, mode));
646 configure_peer(const cfg_obj_t *cpeer, isc_mem_t *mctx, dns_peer_t **peerp) {
649 const cfg_obj_t *obj;
652 unsigned int prefixlen;
654 cfg_obj_asnetprefix(cfg_map_getname(cpeer), &na, &prefixlen);
657 result = dns_peer_new(mctx, &na, &peer);
658 if (result != ISC_R_SUCCESS)
662 (void)cfg_map_get(cpeer, "bogus", &obj);
664 CHECK(dns_peer_setbogus(peer, cfg_obj_asboolean(obj)));
667 (void)cfg_map_get(cpeer, "provide-ixfr", &obj);
669 CHECK(dns_peer_setprovideixfr(peer, cfg_obj_asboolean(obj)));
672 (void)cfg_map_get(cpeer, "request-ixfr", &obj);
674 CHECK(dns_peer_setrequestixfr(peer, cfg_obj_asboolean(obj)));
677 (void)cfg_map_get(cpeer, "edns", &obj);
679 CHECK(dns_peer_setsupportedns(peer, cfg_obj_asboolean(obj)));
682 (void)cfg_map_get(cpeer, "edns-udp-size", &obj);
684 isc_uint32_t udpsize = cfg_obj_asuint32(obj);
689 CHECK(dns_peer_setudpsize(peer, (isc_uint16_t)udpsize));
693 (void)cfg_map_get(cpeer, "max-udp-size", &obj);
695 isc_uint32_t udpsize = cfg_obj_asuint32(obj);
700 CHECK(dns_peer_setmaxudp(peer, (isc_uint16_t)udpsize));
704 (void)cfg_map_get(cpeer, "transfers", &obj);
706 CHECK(dns_peer_settransfers(peer, cfg_obj_asuint32(obj)));
709 (void)cfg_map_get(cpeer, "transfer-format", &obj);
711 str = cfg_obj_asstring(obj);
712 if (strcasecmp(str, "many-answers") == 0)
713 CHECK(dns_peer_settransferformat(peer,
715 else if (strcasecmp(str, "one-answer") == 0)
716 CHECK(dns_peer_settransferformat(peer,
723 (void)cfg_map_get(cpeer, "keys", &obj);
725 result = dns_peer_setkeybycharp(peer, cfg_obj_asstring(obj));
726 if (result != ISC_R_SUCCESS)
731 if (na.family == AF_INET)
732 (void)cfg_map_get(cpeer, "transfer-source", &obj);
734 (void)cfg_map_get(cpeer, "transfer-source-v6", &obj);
736 result = dns_peer_settransfersource(peer,
737 cfg_obj_assockaddr(obj));
738 if (result != ISC_R_SUCCESS)
740 ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
744 if (na.family == AF_INET)
745 (void)cfg_map_get(cpeer, "notify-source", &obj);
747 (void)cfg_map_get(cpeer, "notify-source-v6", &obj);
749 result = dns_peer_setnotifysource(peer,
750 cfg_obj_assockaddr(obj));
751 if (result != ISC_R_SUCCESS)
753 ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
757 if (na.family == AF_INET)
758 (void)cfg_map_get(cpeer, "query-source", &obj);
760 (void)cfg_map_get(cpeer, "query-source-v6", &obj);
762 result = dns_peer_setquerysource(peer,
763 cfg_obj_assockaddr(obj));
764 if (result != ISC_R_SUCCESS)
766 ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
770 return (ISC_R_SUCCESS);
773 dns_peer_detach(&peer);
778 disable_algorithms(const cfg_obj_t *disabled, dns_resolver_t *resolver) {
780 const cfg_obj_t *algorithms;
781 const cfg_listelt_t *element;
783 dns_fixedname_t fixed;
787 dns_fixedname_init(&fixed);
788 name = dns_fixedname_name(&fixed);
789 str = cfg_obj_asstring(cfg_tuple_get(disabled, "name"));
790 isc_buffer_init(&b, str, strlen(str));
791 isc_buffer_add(&b, strlen(str));
792 CHECK(dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL));
794 algorithms = cfg_tuple_get(disabled, "algorithms");
795 for (element = cfg_list_first(algorithms);
797 element = cfg_list_next(element))
802 DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base);
803 r.length = strlen(r.base);
805 result = dns_secalg_fromtext(&alg, &r);
806 if (result != ISC_R_SUCCESS) {
808 result = isc_parse_uint8(&ui, r.base, 10);
811 if (result != ISC_R_SUCCESS) {
812 cfg_obj_log(cfg_listelt_value(element),
813 ns_g_lctx, ISC_LOG_ERROR,
814 "invalid algorithm");
817 CHECK(dns_resolver_disable_algorithm(resolver, name, alg));
824 on_disable_list(const cfg_obj_t *disablelist, dns_name_t *zonename) {
825 const cfg_listelt_t *element;
826 dns_fixedname_t fixed;
829 const cfg_obj_t *value;
833 dns_fixedname_init(&fixed);
834 name = dns_fixedname_name(&fixed);
836 for (element = cfg_list_first(disablelist);
838 element = cfg_list_next(element))
840 value = cfg_listelt_value(element);
841 str = cfg_obj_asstring(value);
842 isc_buffer_init(&b, str, strlen(str));
843 isc_buffer_add(&b, strlen(str));
844 result = dns_name_fromtext(name, &b, dns_rootname,
846 RUNTIME_CHECK(result == ISC_R_SUCCESS);
847 if (dns_name_equal(name, zonename))
854 check_dbtype(dns_zone_t **zonep, unsigned int dbtypec, const char **dbargv,
861 result = dns_zone_getdbtype(*zonep, &argv, mctx);
862 if (result != ISC_R_SUCCESS) {
863 dns_zone_detach(zonep);
868 * Check that all the arguments match.
870 for (i = 0; i < dbtypec; i++)
871 if (argv[i] == NULL || strcmp(argv[i], dbargv[i]) != 0) {
872 dns_zone_detach(zonep);
877 * Check that there are not extra arguments.
879 if (i == dbtypec && argv[i] != NULL)
880 dns_zone_detach(zonep);
881 isc_mem_free(mctx, argv);
886 * Configure 'view' according to 'vconfig', taking defaults from 'config'
887 * where values are missing in 'vconfig'.
889 * When configuring the default view, 'vconfig' will be NULL and the
890 * global defaults in 'config' used exclusively.
893 configure_view(dns_view_t *view, const cfg_obj_t *config,
894 const cfg_obj_t *vconfig, isc_mem_t *mctx,
895 cfg_aclconfctx_t *actx, isc_boolean_t need_hints)
897 const cfg_obj_t *maps[4];
898 const cfg_obj_t *cfgmaps[3];
899 const cfg_obj_t *options = NULL;
900 const cfg_obj_t *voptions = NULL;
901 const cfg_obj_t *forwardtype;
902 const cfg_obj_t *forwarders;
903 const cfg_obj_t *alternates;
904 const cfg_obj_t *zonelist;
906 const cfg_obj_t *dlz;
907 unsigned int dlzargc;
910 const cfg_obj_t *disabled;
911 const cfg_obj_t *obj;
912 const cfg_listelt_t *element;
914 dns_cache_t *cache = NULL;
916 isc_uint32_t max_adb_size;
917 isc_uint32_t max_cache_size;
918 isc_uint32_t max_acache_size;
919 isc_uint32_t lame_ttl;
920 dns_tsig_keyring_t *ring;
921 dns_view_t *pview = NULL; /* Production view */
923 dns_dispatch_t *dispatch4 = NULL;
924 dns_dispatch_t *dispatch6 = NULL;
925 isc_boolean_t reused_cache = ISC_FALSE;
928 dns_order_t *order = NULL;
929 isc_uint32_t udpsize;
930 unsigned int check = 0;
931 dns_zone_t *zone = NULL;
932 isc_uint32_t max_clients_per_query;
933 const char *sep = ": view ";
934 const char *viewname = view->name;
935 const char *forview = " for view ";
936 isc_boolean_t rfc1918;
937 isc_boolean_t empty_zones_enable;
938 const cfg_obj_t *disablelist = NULL;
940 REQUIRE(DNS_VIEW_VALID(view));
945 (void)cfg_map_get(config, "options", &options);
948 if (vconfig != NULL) {
949 voptions = cfg_tuple_get(vconfig, "options");
950 maps[i++] = voptions;
954 maps[i++] = ns_g_defaults;
958 if (voptions != NULL)
959 cfgmaps[i++] = voptions;
961 cfgmaps[i++] = config;
964 if (!strcmp(viewname, "_default")) {
971 * Set the view's port number for outgoing queries.
973 CHECKM(ns_config_getport(config, &port), "port");
974 dns_view_setdstport(view, port);
977 * Create additional cache for this view and zones under the view
978 * if explicitly enabled.
979 * XXX950 default to on.
982 (void)ns_config_get(maps, "acache-enable", &obj);
983 if (obj != NULL && cfg_obj_asboolean(obj)) {
985 CHECK(isc_mem_create(0, 0, &cmctx));
986 CHECK(dns_acache_create(&view->acache, cmctx, ns_g_taskmgr,
988 isc_mem_detach(&cmctx);
990 if (view->acache != NULL) {
992 result = ns_config_get(maps, "acache-cleaning-interval", &obj);
993 INSIST(result == ISC_R_SUCCESS);
994 dns_acache_setcleaninginterval(view->acache,
995 cfg_obj_asuint32(obj) * 60);
998 result = ns_config_get(maps, "max-acache-size", &obj);
999 INSIST(result == ISC_R_SUCCESS);
1000 if (cfg_obj_isstring(obj)) {
1001 str = cfg_obj_asstring(obj);
1002 INSIST(strcasecmp(str, "unlimited") == 0);
1003 max_acache_size = ISC_UINT32_MAX;
1005 isc_resourcevalue_t value;
1007 value = cfg_obj_asuint64(obj);
1008 if (value > ISC_UINT32_MAX) {
1009 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
1011 "%" ISC_PRINT_QUADFORMAT
1014 result = ISC_R_RANGE;
1017 max_acache_size = (isc_uint32_t)value;
1019 dns_acache_setcachesize(view->acache, max_acache_size);
1023 * Configure the zones.
1026 if (voptions != NULL)
1027 (void)cfg_map_get(voptions, "zone", &zonelist);
1029 (void)cfg_map_get(config, "zone", &zonelist);
1030 for (element = cfg_list_first(zonelist);
1032 element = cfg_list_next(element))
1034 const cfg_obj_t *zconfig = cfg_listelt_value(element);
1035 CHECK(configure_zone(config, zconfig, vconfig, mctx, view,
1041 * Create Dynamically Loadable Zone driver.
1044 if (voptions != NULL)
1045 (void)cfg_map_get(voptions, "dlz", &dlz);
1047 (void)cfg_map_get(config, "dlz", &dlz);
1051 (void)cfg_map_get(cfg_tuple_get(dlz, "options"),
1054 char *s = isc_mem_strdup(mctx, cfg_obj_asstring(obj));
1056 result = ISC_R_NOMEMORY;
1060 result = dns_dlzstrtoargv(mctx, s, &dlzargc, &dlzargv);
1061 if (result != ISC_R_SUCCESS) {
1062 isc_mem_free(mctx, s);
1066 obj = cfg_tuple_get(dlz, "name");
1067 result = dns_dlzcreate(mctx, cfg_obj_asstring(obj),
1068 dlzargv[0], dlzargc, dlzargv,
1069 &view->dlzdatabase);
1070 isc_mem_free(mctx, s);
1071 isc_mem_put(mctx, dlzargv, dlzargc * sizeof(*dlzargv));
1072 if (result != ISC_R_SUCCESS)
1079 * Configure the view's cache. Try to reuse an existing
1080 * cache if possible, otherwise create a new cache.
1081 * Note that the ADB is not preserved in either case.
1083 * XXX Determining when it is safe to reuse a cache is
1084 * tricky. When the view's configuration changes, the cached
1085 * data may become invalid because it reflects our old
1086 * view of the world. As more view attributes become
1087 * configurable, we will have to add code here to check
1088 * whether they have changed in ways that could
1089 * invalidate the cache.
1091 result = dns_viewlist_find(&ns_g_server->viewlist,
1092 view->name, view->rdclass,
1094 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
1096 if (pview != NULL) {
1097 INSIST(pview->cache != NULL);
1098 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1099 NS_LOGMODULE_SERVER, ISC_LOG_DEBUG(3),
1100 "reusing existing cache");
1101 reused_cache = ISC_TRUE;
1102 dns_cache_attach(pview->cache, &cache);
1103 dns_view_detach(&pview);
1105 CHECK(isc_mem_create(0, 0, &cmctx));
1106 CHECK(dns_cache_create(cmctx, ns_g_taskmgr, ns_g_timermgr,
1107 view->rdclass, "rbt", 0, NULL, &cache));
1109 dns_view_setcache(view, cache);
1112 * cache-file cannot be inherited if views are present, but this
1113 * should be caught by the configuration checking stage.
1116 result = ns_config_get(maps, "cache-file", &obj);
1117 if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind") != 0) {
1118 CHECK(dns_cache_setfilename(cache, cfg_obj_asstring(obj)));
1120 CHECK(dns_cache_load(cache));
1124 result = ns_config_get(maps, "cleaning-interval", &obj);
1125 INSIST(result == ISC_R_SUCCESS);
1126 dns_cache_setcleaninginterval(cache, cfg_obj_asuint32(obj) * 60);
1129 result = ns_config_get(maps, "max-cache-size", &obj);
1130 INSIST(result == ISC_R_SUCCESS);
1131 if (cfg_obj_isstring(obj)) {
1132 str = cfg_obj_asstring(obj);
1133 INSIST(strcasecmp(str, "unlimited") == 0);
1134 max_cache_size = ISC_UINT32_MAX;
1136 isc_resourcevalue_t value;
1137 value = cfg_obj_asuint64(obj);
1138 if (value > ISC_UINT32_MAX) {
1139 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
1141 "%" ISC_PRINT_QUADFORMAT "d' is too large",
1143 result = ISC_R_RANGE;
1146 max_cache_size = (isc_uint32_t)value;
1148 dns_cache_setcachesize(cache, max_cache_size);
1150 dns_cache_detach(&cache);
1156 result = ns_checknames_get(maps, "response", &obj);
1157 INSIST(result == ISC_R_SUCCESS);
1159 str = cfg_obj_asstring(obj);
1160 if (strcasecmp(str, "fail") == 0) {
1161 check = DNS_RESOLVER_CHECKNAMES |
1162 DNS_RESOLVER_CHECKNAMESFAIL;
1163 view->checknames = ISC_TRUE;
1164 } else if (strcasecmp(str, "warn") == 0) {
1165 check = DNS_RESOLVER_CHECKNAMES;
1166 view->checknames = ISC_FALSE;
1167 } else if (strcasecmp(str, "ignore") == 0) {
1169 view->checknames = ISC_FALSE;
1176 * XXXRTH Hardwired number of tasks.
1178 CHECK(get_view_querysource_dispatch(maps, AF_INET, &dispatch4));
1179 CHECK(get_view_querysource_dispatch(maps, AF_INET6, &dispatch6));
1180 if (dispatch4 == NULL && dispatch6 == NULL) {
1181 UNEXPECTED_ERROR(__FILE__, __LINE__,
1182 "unable to obtain neither an IPv4 nor"
1183 " an IPv6 dispatch");
1184 result = ISC_R_UNEXPECTED;
1187 CHECK(dns_view_createresolver(view, ns_g_taskmgr, 31,
1188 ns_g_socketmgr, ns_g_timermgr,
1189 check, ns_g_dispatchmgr,
1190 dispatch4, dispatch6));
1193 * Set the ADB cache size to 1/8th of the max-cache-size.
1196 if (max_cache_size != 0) {
1197 max_adb_size = max_cache_size / 8;
1198 if (max_adb_size == 0)
1199 max_adb_size = 1; /* Force minimum. */
1201 dns_adb_setadbsize(view->adb, max_adb_size);
1204 * Set resolver's lame-ttl.
1207 result = ns_config_get(maps, "lame-ttl", &obj);
1208 INSIST(result == ISC_R_SUCCESS);
1209 lame_ttl = cfg_obj_asuint32(obj);
1210 if (lame_ttl > 1800)
1212 dns_resolver_setlamettl(view->resolver, lame_ttl);
1215 result = ns_config_get(maps, "zero-no-soa-ttl-cache", &obj);
1216 INSIST(result == ISC_R_SUCCESS);
1217 dns_resolver_setzeronosoattl(view->resolver, cfg_obj_asboolean(obj));
1220 * Set the resolver's EDNS UDP size.
1223 result = ns_config_get(maps, "edns-udp-size", &obj);
1224 INSIST(result == ISC_R_SUCCESS);
1225 udpsize = cfg_obj_asuint32(obj);
1230 dns_resolver_setudpsize(view->resolver, (isc_uint16_t)udpsize);
1233 * Set the maximum UDP response size.
1236 result = ns_config_get(maps, "max-udp-size", &obj);
1237 INSIST(result == ISC_R_SUCCESS);
1238 udpsize = cfg_obj_asuint32(obj);
1243 view->maxudp = udpsize;
1246 * Set supported DNSSEC algorithms.
1248 dns_resolver_reset_algorithms(view->resolver);
1250 (void)ns_config_get(maps, "disable-algorithms", &disabled);
1251 if (disabled != NULL) {
1252 for (element = cfg_list_first(disabled);
1254 element = cfg_list_next(element))
1255 CHECK(disable_algorithms(cfg_listelt_value(element),
1260 * A global or view "forwarders" option, if present,
1261 * creates an entry for "." in the forwarding table.
1265 (void)ns_config_get(maps, "forward", &forwardtype);
1266 (void)ns_config_get(maps, "forwarders", &forwarders);
1267 if (forwarders != NULL)
1268 CHECK(configure_forward(config, view, dns_rootname,
1269 forwarders, forwardtype));
1272 * Dual Stack Servers.
1275 (void)ns_config_get(maps, "dual-stack-servers", &alternates);
1276 if (alternates != NULL)
1277 CHECK(configure_alternates(config, view, alternates));
1280 * We have default hints for class IN if we need them.
1282 if (view->rdclass == dns_rdataclass_in && view->hints == NULL)
1283 dns_view_sethints(view, ns_g_server->in_roothints);
1286 * If we still have no hints, this is a non-IN view with no
1287 * "hints zone" configured. Issue a warning, except if this
1288 * is a root server. Root servers never need to consult
1289 * their hints, so it's no point requiring users to configure
1292 if (view->hints == NULL) {
1293 dns_zone_t *rootzone = NULL;
1294 (void)dns_view_findzone(view, dns_rootname, &rootzone);
1295 if (rootzone != NULL) {
1296 dns_zone_detach(&rootzone);
1297 need_hints = ISC_FALSE;
1300 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1301 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
1302 "no root hints for view '%s'",
1307 * Configure the view's TSIG keys.
1310 CHECK(ns_tsigkeyring_fromconfig(config, vconfig, view->mctx, &ring));
1311 dns_view_setkeyring(view, ring);
1314 * Configure the view's peer list.
1317 const cfg_obj_t *peers = NULL;
1318 const cfg_listelt_t *element;
1319 dns_peerlist_t *newpeers = NULL;
1321 (void)ns_config_get(cfgmaps, "server", &peers);
1322 CHECK(dns_peerlist_new(mctx, &newpeers));
1323 for (element = cfg_list_first(peers);
1325 element = cfg_list_next(element))
1327 const cfg_obj_t *cpeer = cfg_listelt_value(element);
1330 CHECK(configure_peer(cpeer, mctx, &peer));
1331 dns_peerlist_addpeer(newpeers, peer);
1332 dns_peer_detach(&peer);
1334 dns_peerlist_detach(&view->peers);
1335 view->peers = newpeers; /* Transfer ownership. */
1339 * Configure the views rrset-order.
1342 const cfg_obj_t *rrsetorder = NULL;
1343 const cfg_listelt_t *element;
1345 (void)ns_config_get(maps, "rrset-order", &rrsetorder);
1346 CHECK(dns_order_create(mctx, &order));
1347 for (element = cfg_list_first(rrsetorder);
1349 element = cfg_list_next(element))
1351 const cfg_obj_t *ent = cfg_listelt_value(element);
1353 CHECK(configure_order(order, ent));
1355 if (view->order != NULL)
1356 dns_order_detach(&view->order);
1357 dns_order_attach(order, &view->order);
1358 dns_order_detach(&order);
1361 * Copy the aclenv object.
1363 dns_aclenv_copy(&view->aclenv, &ns_g_server->aclenv);
1366 * Configure the "match-clients" and "match-destinations" ACL.
1368 CHECK(configure_view_acl(vconfig, config, "match-clients", actx,
1369 ns_g_mctx, &view->matchclients));
1370 CHECK(configure_view_acl(vconfig, config, "match-destinations", actx,
1371 ns_g_mctx, &view->matchdestinations));
1374 * Configure the "match-recursive-only" option.
1377 (void)ns_config_get(maps, "match-recursive-only", &obj);
1378 if (obj != NULL && cfg_obj_asboolean(obj))
1379 view->matchrecursiveonly = ISC_TRUE;
1381 view->matchrecursiveonly = ISC_FALSE;
1384 * Configure other configurable data.
1387 result = ns_config_get(maps, "recursion", &obj);
1388 INSIST(result == ISC_R_SUCCESS);
1389 view->recursion = cfg_obj_asboolean(obj);
1392 result = ns_config_get(maps, "auth-nxdomain", &obj);
1393 INSIST(result == ISC_R_SUCCESS);
1394 view->auth_nxdomain = cfg_obj_asboolean(obj);
1397 result = ns_config_get(maps, "minimal-responses", &obj);
1398 INSIST(result == ISC_R_SUCCESS);
1399 view->minimalresponses = cfg_obj_asboolean(obj);
1402 result = ns_config_get(maps, "transfer-format", &obj);
1403 INSIST(result == ISC_R_SUCCESS);
1404 str = cfg_obj_asstring(obj);
1405 if (strcasecmp(str, "many-answers") == 0)
1406 view->transfer_format = dns_many_answers;
1407 else if (strcasecmp(str, "one-answer") == 0)
1408 view->transfer_format = dns_one_answer;
1413 * Set sources where additional data and CNAME/DNAME
1414 * targets for authoritative answers may be found.
1417 result = ns_config_get(maps, "additional-from-auth", &obj);
1418 INSIST(result == ISC_R_SUCCESS);
1419 view->additionalfromauth = cfg_obj_asboolean(obj);
1420 if (view->recursion && ! view->additionalfromauth) {
1421 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
1422 "'additional-from-auth no' is only supported "
1423 "with 'recursion no'");
1424 view->additionalfromauth = ISC_TRUE;
1428 result = ns_config_get(maps, "additional-from-cache", &obj);
1429 INSIST(result == ISC_R_SUCCESS);
1430 view->additionalfromcache = cfg_obj_asboolean(obj);
1431 if (view->recursion && ! view->additionalfromcache) {
1432 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
1433 "'additional-from-cache no' is only supported "
1434 "with 'recursion no'");
1435 view->additionalfromcache = ISC_TRUE;
1439 * Set "allow-query-cache" and "allow-recursion" acls if
1440 * configured in named.conf.
1442 CHECK(configure_view_acl(vconfig, config, "allow-query-cache",
1443 actx, ns_g_mctx, &view->queryacl));
1445 if (strcmp(view->name, "_bind") != 0)
1446 CHECK(configure_view_acl(vconfig, config, "allow-recursion",
1447 actx, ns_g_mctx, &view->recursionacl));
1450 * Warning if both "recursion no;" and allow-recursion are active
1451 * except for "allow-recursion { none; };".
1453 if (!view->recursion && view->recursionacl != NULL &&
1454 (view->recursionacl->length != 1 ||
1455 view->recursionacl->elements[0].type != dns_aclelementtype_any ||
1456 view->recursionacl->elements[0].negative != ISC_TRUE))
1457 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1458 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
1459 "both \"recursion no;\" and \"allow-recursion\" "
1460 "active%s%s", forview, viewname);
1463 * "allow-query-cache" inherits from "allow-recursion" if set,
1464 * otherwise from "allow-query" if set.
1465 * "allow-recursion" inherits from "allow-query-cache" if set,
1466 * otherwise from "allow-query" if set.
1468 if (view->queryacl == NULL && view->recursionacl != NULL)
1469 dns_acl_attach(view->recursionacl, &view->queryacl);
1470 if (view->queryacl == NULL)
1471 CHECK(configure_view_acl(vconfig, config, "allow-query",
1472 actx, ns_g_mctx, &view->queryacl));
1473 if (view->recursionacl == NULL && view->queryacl != NULL)
1474 dns_acl_attach(view->queryacl, &view->recursionacl);
1477 * Set default "allow-recursion" and "allow-query-cache" acls.
1479 if (view->recursionacl == NULL && view->recursion)
1480 CHECK(configure_view_acl(NULL, ns_g_config, "allow-recursion",
1481 actx, ns_g_mctx, &view->recursionacl));
1482 if (view->queryacl == NULL)
1483 CHECK(configure_view_acl(NULL, ns_g_config,
1484 "allow-query-cache", actx,
1485 ns_g_mctx, &view->queryacl));
1487 CHECK(configure_view_acl(vconfig, config, "sortlist",
1488 actx, ns_g_mctx, &view->sortlist));
1491 result = ns_config_get(maps, "request-ixfr", &obj);
1492 INSIST(result == ISC_R_SUCCESS);
1493 view->requestixfr = cfg_obj_asboolean(obj);
1496 result = ns_config_get(maps, "provide-ixfr", &obj);
1497 INSIST(result == ISC_R_SUCCESS);
1498 view->provideixfr = cfg_obj_asboolean(obj);
1501 result = ns_config_get(maps, "max-clients-per-query", &obj);
1502 INSIST(result == ISC_R_SUCCESS);
1503 max_clients_per_query = cfg_obj_asuint32(obj);
1506 result = ns_config_get(maps, "clients-per-query", &obj);
1507 INSIST(result == ISC_R_SUCCESS);
1508 dns_resolver_setclientsperquery(view->resolver,
1509 cfg_obj_asuint32(obj),
1510 max_clients_per_query);
1513 result = ns_config_get(maps, "dnssec-enable", &obj);
1514 INSIST(result == ISC_R_SUCCESS);
1515 view->enablednssec = cfg_obj_asboolean(obj);
1518 result = ns_config_get(maps, "dnssec-accept-expired", &obj);
1519 INSIST(result == ISC_R_SUCCESS);
1520 view->acceptexpired = cfg_obj_asboolean(obj);
1523 result = ns_config_get(maps, "dnssec-validation", &obj);
1524 INSIST(result == ISC_R_SUCCESS);
1525 view->enablevalidation = cfg_obj_asboolean(obj);
1528 result = ns_config_get(maps, "dnssec-lookaside", &obj);
1529 if (result == ISC_R_SUCCESS) {
1530 for (element = cfg_list_first(obj);
1532 element = cfg_list_next(element))
1538 obj = cfg_listelt_value(element);
1540 dns_fixedname_t fixed;
1544 * When we support multiple dnssec-lookaside
1545 * entries this is how to find the domain to be
1548 dns_fixedname_init(&fixed);
1549 name = dns_fixedname_name(&fixed);
1550 str = cfg_obj_asstring(cfg_tuple_get(obj,
1552 isc_buffer_init(&b, str, strlen(str));
1553 isc_buffer_add(&b, strlen(str));
1554 CHECK(dns_name_fromtext(name, &b, dns_rootname,
1557 str = cfg_obj_asstring(cfg_tuple_get(obj,
1559 isc_buffer_init(&b, str, strlen(str));
1560 isc_buffer_add(&b, strlen(str));
1561 dlv = dns_fixedname_name(&view->dlv_fixed);
1562 CHECK(dns_name_fromtext(dlv, &b, dns_rootname,
1564 view->dlv = dns_fixedname_name(&view->dlv_fixed);
1570 * For now, there is only one kind of trusted keys, the
1573 CHECK(configure_view_dnsseckeys(vconfig, config, mctx,
1575 dns_resolver_resetmustbesecure(view->resolver);
1577 result = ns_config_get(maps, "dnssec-must-be-secure", &obj);
1578 if (result == ISC_R_SUCCESS)
1579 CHECK(mustbesecure(obj, view->resolver));
1582 result = ns_config_get(maps, "max-cache-ttl", &obj);
1583 INSIST(result == ISC_R_SUCCESS);
1584 view->maxcachettl = cfg_obj_asuint32(obj);
1587 result = ns_config_get(maps, "max-ncache-ttl", &obj);
1588 INSIST(result == ISC_R_SUCCESS);
1589 view->maxncachettl = cfg_obj_asuint32(obj);
1590 if (view->maxncachettl > 7 * 24 * 3600)
1591 view->maxncachettl = 7 * 24 * 3600;
1594 result = ns_config_get(maps, "preferred-glue", &obj);
1595 if (result == ISC_R_SUCCESS) {
1596 str = cfg_obj_asstring(obj);
1597 if (strcasecmp(str, "a") == 0)
1598 view->preferred_glue = dns_rdatatype_a;
1599 else if (strcasecmp(str, "aaaa") == 0)
1600 view->preferred_glue = dns_rdatatype_aaaa;
1602 view->preferred_glue = 0;
1604 view->preferred_glue = 0;
1607 result = ns_config_get(maps, "root-delegation-only", &obj);
1608 if (result == ISC_R_SUCCESS) {
1609 dns_view_setrootdelonly(view, ISC_TRUE);
1610 if (!cfg_obj_isvoid(obj)) {
1611 dns_fixedname_t fixed;
1615 const cfg_obj_t *exclude;
1617 dns_fixedname_init(&fixed);
1618 name = dns_fixedname_name(&fixed);
1619 for (element = cfg_list_first(obj);
1621 element = cfg_list_next(element)) {
1622 exclude = cfg_listelt_value(element);
1623 str = cfg_obj_asstring(exclude);
1624 isc_buffer_init(&b, str, strlen(str));
1625 isc_buffer_add(&b, strlen(str));
1626 CHECK(dns_name_fromtext(name, &b, dns_rootname,
1628 CHECK(dns_view_excludedelegationonly(view,
1633 dns_view_setrootdelonly(view, ISC_FALSE);
1636 * Setup automatic empty zones. If recursion is off then
1637 * they are disabled by default.
1640 (void)ns_config_get(maps, "empty-zones-enable", &obj);
1641 (void)ns_config_get(maps, "disable-empty-zone", &disablelist);
1642 if (obj == NULL && disablelist == NULL &&
1643 view->rdclass == dns_rdataclass_in) {
1644 rfc1918 = ISC_FALSE;
1645 empty_zones_enable = view->recursion;
1646 } else if (view->rdclass == dns_rdataclass_in) {
1649 empty_zones_enable = cfg_obj_asboolean(obj);
1651 empty_zones_enable = view->recursion;
1653 rfc1918 = ISC_FALSE;
1654 empty_zones_enable = ISC_FALSE;
1656 if (empty_zones_enable) {
1659 dns_fixedname_t fixed;
1661 isc_buffer_t buffer;
1663 char server[DNS_NAME_FORMATSIZE + 1];
1664 char contact[DNS_NAME_FORMATSIZE + 1];
1665 isc_boolean_t logit;
1666 const char *empty_dbtype[4] =
1667 { "_builtin", "empty", NULL, NULL };
1668 int empty_dbtypec = 4;
1670 dns_fixedname_init(&fixed);
1671 name = dns_fixedname_name(&fixed);
1674 result = ns_config_get(maps, "empty-server", &obj);
1675 if (result == ISC_R_SUCCESS) {
1676 str = cfg_obj_asstring(obj);
1677 isc_buffer_init(&buffer, str, strlen(str));
1678 isc_buffer_add(&buffer, strlen(str));
1679 CHECK(dns_name_fromtext(name, &buffer, dns_rootname,
1681 isc_buffer_init(&buffer, server, sizeof(server) - 1);
1682 CHECK(dns_name_totext(name, ISC_FALSE, &buffer));
1683 server[isc_buffer_usedlength(&buffer)] = 0;
1684 empty_dbtype[2] = server;
1686 empty_dbtype[2] = "@";
1689 result = ns_config_get(maps, "empty-contact", &obj);
1690 if (result == ISC_R_SUCCESS) {
1691 str = cfg_obj_asstring(obj);
1692 isc_buffer_init(&buffer, str, strlen(str));
1693 isc_buffer_add(&buffer, strlen(str));
1694 CHECK(dns_name_fromtext(name, &buffer, dns_rootname,
1696 isc_buffer_init(&buffer, contact, sizeof(contact) - 1);
1697 CHECK(dns_name_totext(name, ISC_FALSE, &buffer));
1698 contact[isc_buffer_usedlength(&buffer)] = 0;
1699 empty_dbtype[3] = contact;
1701 empty_dbtype[3] = ".";
1704 for (empty = empty_zones[empty_zone].zone;
1706 empty = empty_zones[++empty_zone].zone)
1708 dns_forwarders_t *forwarders = NULL;
1709 dns_view_t *pview = NULL;
1711 isc_buffer_init(&buffer, empty, strlen(empty));
1712 isc_buffer_add(&buffer, strlen(empty));
1714 * Look for zone on drop list.
1716 CHECK(dns_name_fromtext(name, &buffer, dns_rootname,
1718 if (disablelist != NULL &&
1719 on_disable_list(disablelist, name))
1723 * This zone already exists.
1725 (void)dns_view_findzone(view, name, &zone);
1727 dns_zone_detach(&zone);
1732 * If we would forward this name don't add a
1733 * empty zone for it.
1735 result = dns_fwdtable_find(view->fwdtable, name,
1737 if (result == ISC_R_SUCCESS &&
1738 forwarders->fwdpolicy == dns_fwdpolicy_only)
1741 if (!rfc1918 && empty_zones[empty_zone].rfc1918) {
1743 isc_log_write(ns_g_lctx,
1744 NS_LOGCATEGORY_GENERAL,
1745 NS_LOGMODULE_SERVER,
1748 "'empty-zones-enable/"
1749 "disable-empty-zone' "
1750 "not set: disabling "
1751 "RFC 1918 empty zones",
1759 * See if we can re-use a existing zone.
1761 result = dns_viewlist_find(&ns_g_server->viewlist,
1762 view->name, view->rdclass,
1764 if (result != ISC_R_NOTFOUND &&
1765 result != ISC_R_SUCCESS)
1768 if (pview != NULL) {
1769 (void)dns_view_findzone(pview, name, &zone);
1770 dns_view_detach(&pview);
1772 check_dbtype(&zone, empty_dbtypec,
1773 empty_dbtype, mctx);
1775 dns_zone_setview(zone, view);
1776 CHECK(dns_view_addzone(view, zone));
1777 dns_zone_detach(&zone);
1782 CHECK(dns_zone_create(&zone, mctx));
1783 CHECK(dns_zone_setorigin(zone, name));
1784 dns_zone_setview(zone, view);
1785 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
1786 dns_zone_setclass(zone, view->rdclass);
1787 dns_zone_settype(zone, dns_zone_master);
1788 CHECK(dns_zone_setdbtype(zone, empty_dbtypec,
1790 if (view->queryacl != NULL)
1791 dns_zone_setqueryacl(zone, view->queryacl);
1792 dns_zone_setdialup(zone, dns_dialuptype_no);
1793 dns_zone_setnotifytype(zone, dns_notifytype_no);
1794 dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS,
1796 CHECK(dns_view_addzone(view, zone));
1797 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1798 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
1799 "automatic empty zone%s%s: %s",
1800 sep, viewname, empty);
1801 dns_zone_detach(&zone);
1805 result = ISC_R_SUCCESS;
1809 dns_zone_detach(&zone);
1810 if (dispatch4 != NULL)
1811 dns_dispatch_detach(&dispatch4);
1812 if (dispatch6 != NULL)
1813 dns_dispatch_detach(&dispatch6);
1815 dns_order_detach(&order);
1817 isc_mem_detach(&cmctx);
1820 dns_cache_detach(&cache);
1826 configure_hints(dns_view_t *view, const char *filename) {
1827 isc_result_t result;
1831 result = dns_rootns_create(view->mctx, view->rdclass, filename, &db);
1832 if (result == ISC_R_SUCCESS) {
1833 dns_view_sethints(view, db);
1841 configure_alternates(const cfg_obj_t *config, dns_view_t *view,
1842 const cfg_obj_t *alternates)
1844 const cfg_obj_t *portobj;
1845 const cfg_obj_t *addresses;
1846 const cfg_listelt_t *element;
1847 isc_result_t result = ISC_R_SUCCESS;
1851 * Determine which port to send requests to.
1853 if (ns_g_lwresdonly && ns_g_port != 0)
1856 CHECKM(ns_config_getport(config, &port), "port");
1858 if (alternates != NULL) {
1859 portobj = cfg_tuple_get(alternates, "port");
1860 if (cfg_obj_isuint32(portobj)) {
1861 isc_uint32_t val = cfg_obj_asuint32(portobj);
1862 if (val > ISC_UINT16_MAX) {
1863 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
1864 "port '%u' out of range", val);
1865 return (ISC_R_RANGE);
1867 port = (in_port_t) val;
1872 if (alternates != NULL)
1873 addresses = cfg_tuple_get(alternates, "addresses");
1875 for (element = cfg_list_first(addresses);
1877 element = cfg_list_next(element))
1879 const cfg_obj_t *alternate = cfg_listelt_value(element);
1882 if (!cfg_obj_issockaddr(alternate)) {
1883 dns_fixedname_t fixed;
1885 const char *str = cfg_obj_asstring(cfg_tuple_get(
1886 alternate, "name"));
1887 isc_buffer_t buffer;
1888 in_port_t myport = port;
1890 isc_buffer_init(&buffer, str, strlen(str));
1891 isc_buffer_add(&buffer, strlen(str));
1892 dns_fixedname_init(&fixed);
1893 name = dns_fixedname_name(&fixed);
1894 CHECK(dns_name_fromtext(name, &buffer, dns_rootname,
1897 portobj = cfg_tuple_get(alternate, "port");
1898 if (cfg_obj_isuint32(portobj)) {
1899 isc_uint32_t val = cfg_obj_asuint32(portobj);
1900 if (val > ISC_UINT16_MAX) {
1901 cfg_obj_log(portobj, ns_g_lctx,
1903 "port '%u' out of range",
1905 return (ISC_R_RANGE);
1907 myport = (in_port_t) val;
1909 CHECK(dns_resolver_addalternate(view->resolver, NULL,
1914 sa = *cfg_obj_assockaddr(alternate);
1915 if (isc_sockaddr_getport(&sa) == 0)
1916 isc_sockaddr_setport(&sa, port);
1917 CHECK(dns_resolver_addalternate(view->resolver, &sa,
1926 configure_forward(const cfg_obj_t *config, dns_view_t *view, dns_name_t *origin,
1927 const cfg_obj_t *forwarders, const cfg_obj_t *forwardtype)
1929 const cfg_obj_t *portobj;
1930 const cfg_obj_t *faddresses;
1931 const cfg_listelt_t *element;
1932 dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none;
1933 isc_sockaddrlist_t addresses;
1935 isc_result_t result;
1939 * Determine which port to send forwarded requests to.
1941 if (ns_g_lwresdonly && ns_g_port != 0)
1944 CHECKM(ns_config_getport(config, &port), "port");
1946 if (forwarders != NULL) {
1947 portobj = cfg_tuple_get(forwarders, "port");
1948 if (cfg_obj_isuint32(portobj)) {
1949 isc_uint32_t val = cfg_obj_asuint32(portobj);
1950 if (val > ISC_UINT16_MAX) {
1951 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
1952 "port '%u' out of range", val);
1953 return (ISC_R_RANGE);
1955 port = (in_port_t) val;
1960 if (forwarders != NULL)
1961 faddresses = cfg_tuple_get(forwarders, "addresses");
1963 ISC_LIST_INIT(addresses);
1965 for (element = cfg_list_first(faddresses);
1967 element = cfg_list_next(element))
1969 const cfg_obj_t *forwarder = cfg_listelt_value(element);
1970 sa = isc_mem_get(view->mctx, sizeof(isc_sockaddr_t));
1972 result = ISC_R_NOMEMORY;
1975 *sa = *cfg_obj_assockaddr(forwarder);
1976 if (isc_sockaddr_getport(sa) == 0)
1977 isc_sockaddr_setport(sa, port);
1978 ISC_LINK_INIT(sa, link);
1979 ISC_LIST_APPEND(addresses, sa, link);
1982 if (ISC_LIST_EMPTY(addresses)) {
1983 if (forwardtype != NULL)
1984 cfg_obj_log(forwarders, ns_g_lctx, ISC_LOG_WARNING,
1985 "no forwarders seen; disabling "
1987 fwdpolicy = dns_fwdpolicy_none;
1989 if (forwardtype == NULL)
1990 fwdpolicy = dns_fwdpolicy_first;
1992 const char *forwardstr = cfg_obj_asstring(forwardtype);
1993 if (strcasecmp(forwardstr, "first") == 0)
1994 fwdpolicy = dns_fwdpolicy_first;
1995 else if (strcasecmp(forwardstr, "only") == 0)
1996 fwdpolicy = dns_fwdpolicy_only;
2002 result = dns_fwdtable_add(view->fwdtable, origin, &addresses,
2004 if (result != ISC_R_SUCCESS) {
2005 char namebuf[DNS_NAME_FORMATSIZE];
2006 dns_name_format(origin, namebuf, sizeof(namebuf));
2007 cfg_obj_log(forwarders, ns_g_lctx, ISC_LOG_WARNING,
2008 "could not set up forwarding for domain '%s': %s",
2009 namebuf, isc_result_totext(result));
2013 result = ISC_R_SUCCESS;
2017 while (!ISC_LIST_EMPTY(addresses)) {
2018 sa = ISC_LIST_HEAD(addresses);
2019 ISC_LIST_UNLINK(addresses, sa, link);
2020 isc_mem_put(view->mctx, sa, sizeof(isc_sockaddr_t));
2027 * Create a new view and add it to the list.
2029 * If 'vconfig' is NULL, create the default view.
2031 * The view created is attached to '*viewp'.
2034 create_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist,
2037 isc_result_t result;
2038 const char *viewname;
2039 dns_rdataclass_t viewclass;
2040 dns_view_t *view = NULL;
2042 if (vconfig != NULL) {
2043 const cfg_obj_t *classobj = NULL;
2045 viewname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name"));
2046 classobj = cfg_tuple_get(vconfig, "class");
2047 result = ns_config_getclass(classobj, dns_rdataclass_in,
2050 viewname = "_default";
2051 viewclass = dns_rdataclass_in;
2053 result = dns_viewlist_find(viewlist, viewname, viewclass, &view);
2054 if (result == ISC_R_SUCCESS)
2055 return (ISC_R_EXISTS);
2056 if (result != ISC_R_NOTFOUND)
2058 INSIST(view == NULL);
2060 result = dns_view_create(ns_g_mctx, viewclass, viewname, &view);
2061 if (result != ISC_R_SUCCESS)
2064 ISC_LIST_APPEND(*viewlist, view, link);
2065 dns_view_attach(view, viewp);
2066 return (ISC_R_SUCCESS);
2070 * Configure or reconfigure a zone.
2073 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
2074 const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
2075 cfg_aclconfctx_t *aclconf)
2077 dns_view_t *pview = NULL; /* Production view */
2078 dns_zone_t *zone = NULL; /* New or reused zone */
2079 dns_zone_t *dupzone = NULL;
2080 const cfg_obj_t *options = NULL;
2081 const cfg_obj_t *zoptions = NULL;
2082 const cfg_obj_t *typeobj = NULL;
2083 const cfg_obj_t *forwarders = NULL;
2084 const cfg_obj_t *forwardtype = NULL;
2085 const cfg_obj_t *only = NULL;
2086 isc_result_t result;
2087 isc_result_t tresult;
2088 isc_buffer_t buffer;
2089 dns_fixedname_t fixorigin;
2092 dns_rdataclass_t zclass;
2093 const char *ztypestr;
2096 (void)cfg_map_get(config, "options", &options);
2098 zoptions = cfg_tuple_get(zconfig, "options");
2101 * Get the zone origin as a dns_name_t.
2103 zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
2104 isc_buffer_init(&buffer, zname, strlen(zname));
2105 isc_buffer_add(&buffer, strlen(zname));
2106 dns_fixedname_init(&fixorigin);
2107 CHECK(dns_name_fromtext(dns_fixedname_name(&fixorigin),
2108 &buffer, dns_rootname, ISC_FALSE, NULL));
2109 origin = dns_fixedname_name(&fixorigin);
2111 CHECK(ns_config_getclass(cfg_tuple_get(zconfig, "class"),
2112 view->rdclass, &zclass));
2113 if (zclass != view->rdclass) {
2114 const char *vname = NULL;
2115 if (vconfig != NULL)
2116 vname = cfg_obj_asstring(cfg_tuple_get(vconfig,
2119 vname = "<default view>";
2121 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2122 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
2123 "zone '%s': wrong class for view '%s'",
2125 result = ISC_R_FAILURE;
2129 (void)cfg_map_get(zoptions, "type", &typeobj);
2130 if (typeobj == NULL) {
2131 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
2132 "zone '%s' 'type' not specified", zname);
2133 return (ISC_R_FAILURE);
2135 ztypestr = cfg_obj_asstring(typeobj);
2138 * "hints zones" aren't zones. If we've got one,
2139 * configure it and return.
2141 if (strcasecmp(ztypestr, "hint") == 0) {
2142 const cfg_obj_t *fileobj = NULL;
2143 if (cfg_map_get(zoptions, "file", &fileobj) != ISC_R_SUCCESS) {
2144 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2145 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
2146 "zone '%s': 'file' not specified",
2148 result = ISC_R_FAILURE;
2151 if (dns_name_equal(origin, dns_rootname)) {
2152 const char *hintsfile = cfg_obj_asstring(fileobj);
2154 result = configure_hints(view, hintsfile);
2155 if (result != ISC_R_SUCCESS) {
2156 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2157 NS_LOGMODULE_SERVER,
2159 "could not configure root hints "
2160 "from '%s': %s", hintsfile,
2161 isc_result_totext(result));
2165 * Hint zones may also refer to delegation only points.
2168 tresult = cfg_map_get(zoptions, "delegation-only",
2170 if (tresult == ISC_R_SUCCESS && cfg_obj_asboolean(only))
2171 CHECK(dns_view_adddelegationonly(view, origin));
2173 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2174 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
2175 "ignoring non-root hint zone '%s'",
2177 result = ISC_R_SUCCESS;
2179 /* Skip ordinary zone processing. */
2184 * "forward zones" aren't zones either. Translate this syntax into
2185 * the appropriate selective forwarding configuration and return.
2187 if (strcasecmp(ztypestr, "forward") == 0) {
2191 (void)cfg_map_get(zoptions, "forward", &forwardtype);
2192 (void)cfg_map_get(zoptions, "forwarders", &forwarders);
2193 result = configure_forward(config, view, origin, forwarders,
2199 * "delegation-only zones" aren't zones either.
2201 if (strcasecmp(ztypestr, "delegation-only") == 0) {
2202 result = dns_view_adddelegationonly(view, origin);
2207 * Check for duplicates in the new zone table.
2209 result = dns_view_findzone(view, origin, &dupzone);
2210 if (result == ISC_R_SUCCESS) {
2212 * We already have this zone!
2214 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
2215 "zone '%s' already exists", zname);
2216 dns_zone_detach(&dupzone);
2217 result = ISC_R_EXISTS;
2220 INSIST(dupzone == NULL);
2223 * See if we can reuse an existing zone. This is
2224 * only possible if all of these are true:
2225 * - The zone's view exists
2226 * - A zone with the right name exists in the view
2227 * - The zone is compatible with the config
2228 * options (e.g., an existing master zone cannot
2229 * be reused if the options specify a slave zone)
2231 result = dns_viewlist_find(&ns_g_server->viewlist,
2232 view->name, view->rdclass,
2234 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
2237 result = dns_view_findzone(pview, origin, &zone);
2238 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
2240 if (zone != NULL && !ns_zone_reusable(zone, zconfig))
2241 dns_zone_detach(&zone);
2245 * We found a reusable zone. Make it use the
2248 dns_zone_setview(zone, view);
2249 if (view->acache != NULL)
2250 dns_zone_setacache(zone, view->acache);
2253 * We cannot reuse an existing zone, we have
2254 * to create a new one.
2256 CHECK(dns_zone_create(&zone, mctx));
2257 CHECK(dns_zone_setorigin(zone, origin));
2258 dns_zone_setview(zone, view);
2259 if (view->acache != NULL)
2260 dns_zone_setacache(zone, view->acache);
2261 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
2265 * If the zone contains a 'forwarders' statement, configure
2266 * selective forwarding.
2269 if (cfg_map_get(zoptions, "forwarders", &forwarders) == ISC_R_SUCCESS)
2272 (void)cfg_map_get(zoptions, "forward", &forwardtype);
2273 CHECK(configure_forward(config, view, origin, forwarders,
2278 * Stub and forward zones may also refer to delegation only points.
2281 if (cfg_map_get(zoptions, "delegation-only", &only) == ISC_R_SUCCESS)
2283 if (cfg_obj_asboolean(only))
2284 CHECK(dns_view_adddelegationonly(view, origin));
2288 * Configure the zone.
2290 CHECK(ns_zone_configure(config, vconfig, zconfig, aclconf, zone));
2293 * Add the zone to its view in the new view list.
2295 CHECK(dns_view_addzone(view, zone));
2299 dns_zone_detach(&zone);
2301 dns_view_detach(&pview);
2307 * Configure a single server quota.
2310 configure_server_quota(const cfg_obj_t **maps, const char *name,
2313 const cfg_obj_t *obj = NULL;
2314 isc_result_t result;
2316 result = ns_config_get(maps, name, &obj);
2317 INSIST(result == ISC_R_SUCCESS);
2318 isc_quota_max(quota, cfg_obj_asuint32(obj));
2322 * This function is called as soon as the 'directory' statement has been
2323 * parsed. This can be extended to support other options if necessary.
2326 directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) {
2327 isc_result_t result;
2328 const char *directory;
2330 REQUIRE(strcasecmp("directory", clausename) == 0);
2338 directory = cfg_obj_asstring(obj);
2340 if (! isc_file_ischdiridempotent(directory))
2341 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
2342 "option 'directory' contains relative path '%s'",
2345 result = isc_dir_chdir(directory);
2346 if (result != ISC_R_SUCCESS) {
2347 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
2348 "change directory to '%s' failed: %s",
2349 directory, isc_result_totext(result));
2353 return (ISC_R_SUCCESS);
2357 scan_interfaces(ns_server_t *server, isc_boolean_t verbose) {
2358 isc_boolean_t match_mapped = server->aclenv.match_mapped;
2360 ns_interfacemgr_scan(server->interfacemgr, verbose);
2362 * Update the "localhost" and "localnets" ACLs to match the
2363 * current set of network interfaces.
2365 dns_aclenv_copy(&server->aclenv,
2366 ns_interfacemgr_getaclenv(server->interfacemgr));
2368 server->aclenv.match_mapped = match_mapped;
2372 add_listenelt(isc_mem_t *mctx, ns_listenlist_t *list, isc_sockaddr_t *addr) {
2373 ns_listenelt_t *lelt = NULL;
2374 dns_acl_t *src_acl = NULL;
2375 dns_aclelement_t aelt;
2376 isc_result_t result;
2377 isc_sockaddr_t any_sa6;
2379 REQUIRE(isc_sockaddr_pf(addr) == AF_INET6);
2381 isc_sockaddr_any6(&any_sa6);
2382 if (!isc_sockaddr_equal(&any_sa6, addr)) {
2383 aelt.type = dns_aclelementtype_ipprefix;
2384 aelt.negative = ISC_FALSE;
2385 aelt.u.ip_prefix.prefixlen = 128;
2386 isc_netaddr_fromin6(&aelt.u.ip_prefix.address,
2387 &addr->type.sin6.sin6_addr);
2389 result = dns_acl_create(mctx, 1, &src_acl);
2390 if (result != ISC_R_SUCCESS)
2392 result = dns_acl_appendelement(src_acl, &aelt);
2393 if (result != ISC_R_SUCCESS)
2396 result = ns_listenelt_create(mctx, isc_sockaddr_getport(addr),
2398 if (result != ISC_R_SUCCESS)
2400 ISC_LIST_APPEND(list->elts, lelt, link);
2403 return (ISC_R_SUCCESS);
2406 INSIST(lelt == NULL);
2407 dns_acl_detach(&src_acl);
2413 * Make a list of xxx-source addresses and call ns_interfacemgr_adjust()
2414 * to update the listening interfaces accordingly.
2415 * We currently only consider IPv6, because this only affects IPv6 wildcard
2419 adjust_interfaces(ns_server_t *server, isc_mem_t *mctx) {
2420 isc_result_t result;
2421 ns_listenlist_t *list = NULL;
2423 dns_zone_t *zone, *next;
2424 isc_sockaddr_t addr, *addrp;
2426 result = ns_listenlist_create(mctx, &list);
2427 if (result != ISC_R_SUCCESS)
2430 for (view = ISC_LIST_HEAD(server->viewlist);
2432 view = ISC_LIST_NEXT(view, link)) {
2433 dns_dispatch_t *dispatch6;
2435 dispatch6 = dns_resolver_dispatchv6(view->resolver);
2436 if (dispatch6 == NULL)
2438 result = dns_dispatch_getlocaladdress(dispatch6, &addr);
2439 if (result != ISC_R_SUCCESS)
2441 result = add_listenelt(mctx, list, &addr);
2442 if (result != ISC_R_SUCCESS)
2447 for (result = dns_zone_first(server->zonemgr, &zone);
2448 result == ISC_R_SUCCESS;
2449 next = NULL, result = dns_zone_next(zone, &next), zone = next) {
2450 dns_view_t *zoneview;
2453 * At this point the zone list may contain a stale zone
2454 * just removed from the configuration. To see the validity,
2455 * check if the corresponding view is in our current view list.
2456 * There may also be old zones that are still in the process
2457 * of shutting down and have detached from their old view
2458 * (zoneview == NULL).
2460 zoneview = dns_zone_getview(zone);
2461 if (zoneview == NULL)
2463 for (view = ISC_LIST_HEAD(server->viewlist);
2464 view != NULL && view != zoneview;
2465 view = ISC_LIST_NEXT(view, link))
2470 addrp = dns_zone_getnotifysrc6(zone);
2471 result = add_listenelt(mctx, list, addrp);
2472 if (result != ISC_R_SUCCESS)
2475 addrp = dns_zone_getxfrsource6(zone);
2476 result = add_listenelt(mctx, list, addrp);
2477 if (result != ISC_R_SUCCESS)
2481 ns_interfacemgr_adjust(server->interfacemgr, list, ISC_TRUE);
2484 ns_listenlist_detach(&list);
2489 * Even when we failed the procedure, most of other interfaces
2490 * should work correctly. We therefore just warn it.
2492 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2493 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
2494 "could not adjust the listen-on list; "
2495 "some interfaces may not work");
2500 * This event callback is invoked to do periodic network
2501 * interface scanning.
2504 interface_timer_tick(isc_task_t *task, isc_event_t *event) {
2505 isc_result_t result;
2506 ns_server_t *server = (ns_server_t *) event->ev_arg;
2507 INSIST(task == server->task);
2509 isc_event_free(&event);
2511 * XXX should scan interfaces unlocked and get exclusive access
2512 * only to replace ACLs.
2514 result = isc_task_beginexclusive(server->task);
2515 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2516 scan_interfaces(server, ISC_FALSE);
2517 isc_task_endexclusive(server->task);
2521 heartbeat_timer_tick(isc_task_t *task, isc_event_t *event) {
2522 ns_server_t *server = (ns_server_t *) event->ev_arg;
2526 isc_event_free(&event);
2527 view = ISC_LIST_HEAD(server->viewlist);
2528 while (view != NULL) {
2529 dns_view_dialup(view);
2530 view = ISC_LIST_NEXT(view, link);
2535 pps_timer_tick(isc_task_t *task, isc_event_t *event) {
2536 static unsigned int oldrequests = 0;
2537 unsigned int requests = ns_client_requests;
2540 isc_event_free(&event);
2543 * Don't worry about wrapping as the overflow result will be right.
2545 dns_pps = (requests - oldrequests) / 1200;
2546 oldrequests = requests;
2550 * Replace the current value of '*field', a dynamically allocated
2551 * string or NULL, with a dynamically allocated copy of the
2552 * null-terminated string pointed to by 'value', or NULL.
2555 setstring(ns_server_t *server, char **field, const char *value) {
2558 if (value != NULL) {
2559 copy = isc_mem_strdup(server->mctx, value);
2561 return (ISC_R_NOMEMORY);
2567 isc_mem_free(server->mctx, *field);
2570 return (ISC_R_SUCCESS);
2574 * Replace the current value of '*field', a dynamically allocated
2575 * string or NULL, with another dynamically allocated string
2576 * or NULL if whether 'obj' is a string or void value, respectively.
2579 setoptstring(ns_server_t *server, char **field, const cfg_obj_t *obj) {
2580 if (cfg_obj_isvoid(obj))
2581 return (setstring(server, field, NULL));
2583 return (setstring(server, field, cfg_obj_asstring(obj)));
2587 set_limit(const cfg_obj_t **maps, const char *configname,
2588 const char *description, isc_resource_t resourceid,
2589 isc_resourcevalue_t defaultvalue)
2591 const cfg_obj_t *obj = NULL;
2592 const char *resource;
2593 isc_resourcevalue_t value;
2594 isc_result_t result;
2596 if (ns_config_get(maps, configname, &obj) != ISC_R_SUCCESS)
2599 if (cfg_obj_isstring(obj)) {
2600 resource = cfg_obj_asstring(obj);
2601 if (strcasecmp(resource, "unlimited") == 0)
2602 value = ISC_RESOURCE_UNLIMITED;
2604 INSIST(strcasecmp(resource, "default") == 0);
2605 value = defaultvalue;
2608 value = cfg_obj_asuint64(obj);
2610 result = isc_resource_setlimit(resourceid, value);
2611 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2612 result == ISC_R_SUCCESS ?
2613 ISC_LOG_DEBUG(3) : ISC_LOG_WARNING,
2614 "set maximum %s to %" ISC_PRINT_QUADFORMAT "d: %s",
2615 description, value, isc_result_totext(result));
2618 #define SETLIMIT(cfgvar, resource, description) \
2619 set_limit(maps, cfgvar, description, isc_resource_ ## resource, \
2620 ns_g_init ## resource)
2623 set_limits(const cfg_obj_t **maps) {
2624 SETLIMIT("stacksize", stacksize, "stack size");
2625 SETLIMIT("datasize", datasize, "data size");
2626 SETLIMIT("coresize", coresize, "core size");
2627 SETLIMIT("files", openfiles, "open files");
2631 portlist_fromconf(dns_portlist_t *portlist, unsigned int family,
2632 const cfg_obj_t *ports)
2634 const cfg_listelt_t *element;
2635 isc_result_t result = ISC_R_SUCCESS;
2637 for (element = cfg_list_first(ports);
2639 element = cfg_list_next(element)) {
2640 const cfg_obj_t *obj = cfg_listelt_value(element);
2641 in_port_t port = (in_port_t)cfg_obj_asuint32(obj);
2643 result = dns_portlist_add(portlist, family, port);
2644 if (result != ISC_R_SUCCESS)
2651 removed(dns_zone_t *zone, void *uap) {
2654 if (dns_zone_getview(zone) != uap)
2655 return (ISC_R_SUCCESS);
2657 switch (dns_zone_gettype(zone)) {
2658 case dns_zone_master:
2661 case dns_zone_slave:
2671 dns_zone_log(zone, ISC_LOG_INFO, "(%s) removed", type);
2672 return (ISC_R_SUCCESS);
2676 load_configuration(const char *filename, ns_server_t *server,
2677 isc_boolean_t first_time)
2679 isc_result_t result;
2680 isc_interval_t interval;
2681 cfg_parser_t *parser = NULL;
2683 const cfg_obj_t *options;
2684 const cfg_obj_t *views;
2685 const cfg_obj_t *obj;
2686 const cfg_obj_t *v4ports, *v6ports;
2687 const cfg_obj_t *maps[3];
2688 const cfg_obj_t *builtin_views;
2689 const cfg_listelt_t *element;
2690 dns_view_t *view = NULL;
2691 dns_view_t *view_next;
2692 dns_viewlist_t viewlist;
2693 dns_viewlist_t tmpviewlist;
2694 cfg_aclconfctx_t aclconfctx;
2695 isc_uint32_t interface_interval;
2696 isc_uint32_t heartbeat_interval;
2697 isc_uint32_t udpsize;
2698 in_port_t listen_port;
2701 cfg_aclconfctx_init(&aclconfctx);
2702 ISC_LIST_INIT(viewlist);
2704 /* Ensure exclusive access to configuration data. */
2705 result = isc_task_beginexclusive(server->task);
2706 RUNTIME_CHECK(result == ISC_R_SUCCESS);
2709 * Parse the global default pseudo-config file.
2712 CHECK(ns_config_parsedefaults(ns_g_parser, &ns_g_config));
2713 RUNTIME_CHECK(cfg_map_get(ns_g_config, "options",
2719 * Parse the configuration file using the new config code.
2721 result = ISC_R_FAILURE;
2725 * Unless this is lwresd with the -C option, parse the config file.
2727 if (!(ns_g_lwresdonly && lwresd_g_useresolvconf)) {
2728 isc_log_write(ns_g_lctx,
2729 NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2730 ISC_LOG_INFO, "loading configuration from '%s'",
2732 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx, &parser));
2733 cfg_parser_setcallback(parser, directory_callback, NULL);
2734 result = cfg_parse_file(parser, filename, &cfg_type_namedconf,
2739 * If this is lwresd with the -C option, or lwresd with no -C or -c
2740 * option where the above parsing failed, parse resolv.conf.
2742 if (ns_g_lwresdonly &&
2743 (lwresd_g_useresolvconf ||
2744 (!ns_g_conffileset && result == ISC_R_FILENOTFOUND)))
2746 isc_log_write(ns_g_lctx,
2747 NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2748 ISC_LOG_INFO, "loading configuration from '%s'",
2749 lwresd_g_resolvconffile);
2751 cfg_parser_destroy(&parser);
2752 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx, &parser));
2753 result = ns_lwresd_parseeresolvconf(ns_g_mctx, parser,
2759 * Check the validity of the configuration.
2761 CHECK(bind9_check_namedconf(config, ns_g_lctx, ns_g_mctx));
2764 * Fill in the maps array, used for resolving defaults.
2768 result = cfg_map_get(config, "options", &options);
2769 if (result == ISC_R_SUCCESS)
2770 maps[i++] = options;
2771 maps[i++] = ns_g_defaults;
2775 * Set process limits, which (usually) needs to be done as root.
2780 * Configure various server options.
2782 configure_server_quota(maps, "transfers-out", &server->xfroutquota);
2783 configure_server_quota(maps, "tcp-clients", &server->tcpquota);
2784 configure_server_quota(maps, "recursive-clients",
2785 &server->recursionquota);
2786 if (server->recursionquota.max > 1000)
2787 isc_quota_soft(&server->recursionquota,
2788 server->recursionquota.max - 100);
2790 isc_quota_soft(&server->recursionquota, 0);
2792 CHECK(configure_view_acl(NULL, config, "blackhole", &aclconfctx,
2793 ns_g_mctx, &server->blackholeacl));
2794 if (server->blackholeacl != NULL)
2795 dns_dispatchmgr_setblackhole(ns_g_dispatchmgr,
2796 server->blackholeacl);
2799 result = ns_config_get(maps, "match-mapped-addresses", &obj);
2800 INSIST(result == ISC_R_SUCCESS);
2801 server->aclenv.match_mapped = cfg_obj_asboolean(obj);
2805 (void)ns_config_get(maps, "avoid-v4-udp-ports", &v4ports);
2806 (void)ns_config_get(maps, "avoid-v6-udp-ports", &v6ports);
2807 if (v4ports != NULL || v6ports != NULL) {
2808 dns_portlist_t *portlist = NULL;
2809 result = dns_portlist_create(ns_g_mctx, &portlist);
2810 if (result == ISC_R_SUCCESS && v4ports != NULL)
2811 result = portlist_fromconf(portlist, AF_INET, v4ports);
2812 if (result == ISC_R_SUCCESS && v6ports != NULL)
2813 portlist_fromconf(portlist, AF_INET6, v6ports);
2814 if (result == ISC_R_SUCCESS)
2815 dns_dispatchmgr_setblackportlist(ns_g_dispatchmgr, portlist);
2816 if (portlist != NULL)
2817 dns_portlist_detach(&portlist);
2820 dns_dispatchmgr_setblackportlist(ns_g_dispatchmgr, NULL);
2823 * Set the EDNS UDP size when we don't match a view.
2826 result = ns_config_get(maps, "edns-udp-size", &obj);
2827 INSIST(result == ISC_R_SUCCESS);
2828 udpsize = cfg_obj_asuint32(obj);
2833 ns_g_udpsize = (isc_uint16_t)udpsize;
2836 * Configure the zone manager.
2839 result = ns_config_get(maps, "transfers-in", &obj);
2840 INSIST(result == ISC_R_SUCCESS);
2841 dns_zonemgr_settransfersin(server->zonemgr, cfg_obj_asuint32(obj));
2844 result = ns_config_get(maps, "transfers-per-ns", &obj);
2845 INSIST(result == ISC_R_SUCCESS);
2846 dns_zonemgr_settransfersperns(server->zonemgr, cfg_obj_asuint32(obj));
2849 result = ns_config_get(maps, "serial-query-rate", &obj);
2850 INSIST(result == ISC_R_SUCCESS);
2851 dns_zonemgr_setserialqueryrate(server->zonemgr, cfg_obj_asuint32(obj));
2854 * Determine which port to use for listening for incoming connections.
2857 listen_port = ns_g_port;
2859 CHECKM(ns_config_getport(config, &listen_port), "port");
2862 * Find the listen queue depth.
2865 result = ns_config_get(maps, "tcp-listen-queue", &obj);
2866 INSIST(result == ISC_R_SUCCESS);
2867 ns_g_listen = cfg_obj_asuint32(obj);
2868 if (ns_g_listen < 3)
2872 * Configure the interface manager according to the "listen-on"
2876 const cfg_obj_t *clistenon = NULL;
2877 ns_listenlist_t *listenon = NULL;
2881 * Even though listen-on is present in the default
2882 * configuration, we can't use it here, since it isn't
2883 * used if we're in lwresd mode. This way is easier.
2885 if (options != NULL)
2886 (void)cfg_map_get(options, "listen-on", &clistenon);
2887 if (clistenon != NULL) {
2888 result = ns_listenlist_fromconfig(clistenon,
2893 } else if (!ns_g_lwresdonly) {
2895 * Not specified, use default.
2897 CHECK(ns_listenlist_default(ns_g_mctx, listen_port,
2898 ISC_TRUE, &listenon));
2900 if (listenon != NULL) {
2901 ns_interfacemgr_setlistenon4(server->interfacemgr,
2903 ns_listenlist_detach(&listenon);
2910 const cfg_obj_t *clistenon = NULL;
2911 ns_listenlist_t *listenon = NULL;
2913 if (options != NULL)
2914 (void)cfg_map_get(options, "listen-on-v6", &clistenon);
2915 if (clistenon != NULL) {
2916 result = ns_listenlist_fromconfig(clistenon,
2921 } else if (!ns_g_lwresdonly) {
2923 * Not specified, use default.
2925 CHECK(ns_listenlist_default(ns_g_mctx, listen_port,
2926 ISC_FALSE, &listenon));
2928 if (listenon != NULL) {
2929 ns_interfacemgr_setlistenon6(server->interfacemgr,
2931 ns_listenlist_detach(&listenon);
2936 * Rescan the interface list to pick up changes in the
2937 * listen-on option. It's important that we do this before we try
2938 * to configure the query source, since the dispatcher we use might
2939 * be shared with an interface.
2941 scan_interfaces(server, ISC_TRUE);
2944 * Arrange for further interface scanning to occur periodically
2945 * as specified by the "interface-interval" option.
2948 result = ns_config_get(maps, "interface-interval", &obj);
2949 INSIST(result == ISC_R_SUCCESS);
2950 interface_interval = cfg_obj_asuint32(obj) * 60;
2951 if (interface_interval == 0) {
2952 CHECK(isc_timer_reset(server->interface_timer,
2953 isc_timertype_inactive,
2954 NULL, NULL, ISC_TRUE));
2955 } else if (server->interface_interval != interface_interval) {
2956 isc_interval_set(&interval, interface_interval, 0);
2957 CHECK(isc_timer_reset(server->interface_timer,
2958 isc_timertype_ticker,
2959 NULL, &interval, ISC_FALSE));
2961 server->interface_interval = interface_interval;
2964 * Configure the dialup heartbeat timer.
2967 result = ns_config_get(maps, "heartbeat-interval", &obj);
2968 INSIST(result == ISC_R_SUCCESS);
2969 heartbeat_interval = cfg_obj_asuint32(obj) * 60;
2970 if (heartbeat_interval == 0) {
2971 CHECK(isc_timer_reset(server->heartbeat_timer,
2972 isc_timertype_inactive,
2973 NULL, NULL, ISC_TRUE));
2974 } else if (server->heartbeat_interval != heartbeat_interval) {
2975 isc_interval_set(&interval, heartbeat_interval, 0);
2976 CHECK(isc_timer_reset(server->heartbeat_timer,
2977 isc_timertype_ticker,
2978 NULL, &interval, ISC_FALSE));
2980 server->heartbeat_interval = heartbeat_interval;
2982 isc_interval_set(&interval, 1200, 0);
2983 CHECK(isc_timer_reset(server->pps_timer, isc_timertype_ticker, NULL,
2984 &interval, ISC_FALSE));
2987 * Configure and freeze all explicit views. Explicit
2988 * views that have zones were already created at parsing
2989 * time, but views with no zones must be created here.
2992 (void)cfg_map_get(config, "view", &views);
2993 for (element = cfg_list_first(views);
2995 element = cfg_list_next(element))
2997 const cfg_obj_t *vconfig = cfg_listelt_value(element);
3000 CHECK(create_view(vconfig, &viewlist, &view));
3001 INSIST(view != NULL);
3002 CHECK(configure_view(view, config, vconfig,
3003 ns_g_mctx, &aclconfctx, ISC_TRUE));
3004 dns_view_freeze(view);
3005 dns_view_detach(&view);
3009 * Make sure we have a default view if and only if there
3010 * were no explicit views.
3012 if (views == NULL) {
3014 * No explicit views; there ought to be a default view.
3015 * There may already be one created as a side effect
3016 * of zone statements, or we may have to create one.
3017 * In either case, we need to configure and freeze it.
3019 CHECK(create_view(NULL, &viewlist, &view));
3020 CHECK(configure_view(view, config, NULL, ns_g_mctx,
3021 &aclconfctx, ISC_TRUE));
3022 dns_view_freeze(view);
3023 dns_view_detach(&view);
3027 * Create (or recreate) the built-in views. Currently
3028 * there is only one, the _bind view.
3030 builtin_views = NULL;
3031 RUNTIME_CHECK(cfg_map_get(ns_g_config, "view",
3032 &builtin_views) == ISC_R_SUCCESS);
3033 for (element = cfg_list_first(builtin_views);
3035 element = cfg_list_next(element))
3037 const cfg_obj_t *vconfig = cfg_listelt_value(element);
3038 CHECK(create_view(vconfig, &viewlist, &view));
3039 CHECK(configure_view(view, config, vconfig, ns_g_mctx,
3040 &aclconfctx, ISC_FALSE));
3041 dns_view_freeze(view);
3042 dns_view_detach(&view);
3047 * Swap our new view list with the production one.
3049 tmpviewlist = server->viewlist;
3050 server->viewlist = viewlist;
3051 viewlist = tmpviewlist;
3054 * Load the TKEY information from the configuration.
3056 if (options != NULL) {
3057 dns_tkeyctx_t *t = NULL;
3058 CHECKM(ns_tkeyctx_fromconfig(options, ns_g_mctx, ns_g_entropy,
3060 "configuring TKEY");
3061 if (server->tkeyctx != NULL)
3062 dns_tkeyctx_destroy(&server->tkeyctx);
3063 server->tkeyctx = t;
3067 * Bind the control port(s).
3069 CHECKM(ns_controls_configure(ns_g_server->controls, config,
3071 "binding control channel(s)");
3074 * Bind the lwresd port(s).
3076 CHECKM(ns_lwresd_configure(ns_g_mctx, config),
3077 "binding lightweight resolver ports");
3080 * Open the source of entropy.
3084 result = ns_config_get(maps, "random-device", &obj);
3085 if (result != ISC_R_SUCCESS) {
3086 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3087 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
3088 "no source of entropy found");
3090 const char *randomdev = cfg_obj_asstring(obj);
3091 result = isc_entropy_createfilesource(ns_g_entropy,
3093 if (result != ISC_R_SUCCESS)
3094 isc_log_write(ns_g_lctx,
3095 NS_LOGCATEGORY_GENERAL,
3096 NS_LOGMODULE_SERVER,
3098 "could not open entropy source "
3101 isc_result_totext(result));
3102 #ifdef PATH_RANDOMDEV
3103 if (ns_g_fallbackentropy != NULL) {
3104 if (result != ISC_R_SUCCESS) {
3105 isc_log_write(ns_g_lctx,
3106 NS_LOGCATEGORY_GENERAL,
3107 NS_LOGMODULE_SERVER,
3109 "using pre-chroot entropy source "
3112 isc_entropy_detach(&ns_g_entropy);
3113 isc_entropy_attach(ns_g_fallbackentropy,
3116 isc_entropy_detach(&ns_g_fallbackentropy);
3123 * Relinquish root privileges.
3129 * Configure the logging system.
3131 * Do this after changing UID to make sure that any log
3132 * files specified in named.conf get created by the
3133 * unprivileged user, not root.
3135 if (ns_g_logstderr) {
3136 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3137 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
3138 "ignoring config file logging "
3139 "statement due to -g option");
3141 const cfg_obj_t *logobj = NULL;
3142 isc_logconfig_t *logc = NULL;
3144 CHECKM(isc_logconfig_create(ns_g_lctx, &logc),
3145 "creating new logging configuration");
3148 (void)cfg_map_get(config, "logging", &logobj);
3149 if (logobj != NULL) {
3150 CHECKM(ns_log_configure(logc, logobj),
3151 "configuring logging");
3153 CHECKM(ns_log_setdefaultchannels(logc),
3154 "setting up default logging channels");
3155 CHECKM(ns_log_setunmatchedcategory(logc),
3156 "setting up default 'category unmatched'");
3157 CHECKM(ns_log_setdefaultcategory(logc),
3158 "setting up default 'category default'");
3161 result = isc_logconfig_use(ns_g_lctx, logc);
3162 if (result != ISC_R_SUCCESS) {
3163 isc_logconfig_destroy(&logc);
3164 CHECKM(result, "installing logging configuration");
3167 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3168 NS_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
3169 "now using logging configuration from "
3174 * Set the default value of the query logging flag depending
3175 * whether a "queries" category has been defined. This is
3176 * a disgusting hack, but we need to do this for BIND 8
3180 const cfg_obj_t *logobj = NULL;
3181 const cfg_obj_t *categories = NULL;
3184 if (ns_config_get(maps, "querylog", &obj) == ISC_R_SUCCESS) {
3185 server->log_queries = cfg_obj_asboolean(obj);
3188 (void)cfg_map_get(config, "logging", &logobj);
3190 (void)cfg_map_get(logobj, "category",
3192 if (categories != NULL) {
3193 const cfg_listelt_t *element;
3194 for (element = cfg_list_first(categories);
3196 element = cfg_list_next(element))
3198 const cfg_obj_t *catobj;
3201 obj = cfg_listelt_value(element);
3202 catobj = cfg_tuple_get(obj, "name");
3203 str = cfg_obj_asstring(catobj);
3204 if (strcasecmp(str, "queries") == 0)
3205 server->log_queries = ISC_TRUE;
3212 if (ns_config_get(maps, "pid-file", &obj) == ISC_R_SUCCESS)
3213 if (cfg_obj_isvoid(obj))
3214 ns_os_writepidfile(NULL, first_time);
3216 ns_os_writepidfile(cfg_obj_asstring(obj), first_time);
3217 else if (ns_g_lwresdonly)
3218 ns_os_writepidfile(lwresd_g_defaultpidfile, first_time);
3220 ns_os_writepidfile(ns_g_defaultpidfile, first_time);
3223 if (options != NULL &&
3224 cfg_map_get(options, "memstatistics-file", &obj) == ISC_R_SUCCESS)
3225 ns_main_setmemstats(cfg_obj_asstring(obj));
3227 ns_main_setmemstats(NULL);
3230 result = ns_config_get(maps, "statistics-file", &obj);
3231 INSIST(result == ISC_R_SUCCESS);
3232 CHECKM(setstring(server, &server->statsfile, cfg_obj_asstring(obj)),
3236 result = ns_config_get(maps, "dump-file", &obj);
3237 INSIST(result == ISC_R_SUCCESS);
3238 CHECKM(setstring(server, &server->dumpfile, cfg_obj_asstring(obj)),
3242 result = ns_config_get(maps, "recursing-file", &obj);
3243 INSIST(result == ISC_R_SUCCESS);
3244 CHECKM(setstring(server, &server->recfile, cfg_obj_asstring(obj)),
3248 result = ns_config_get(maps, "version", &obj);
3249 if (result == ISC_R_SUCCESS) {
3250 CHECKM(setoptstring(server, &server->version, obj), "strdup");
3251 server->version_set = ISC_TRUE;
3253 server->version_set = ISC_FALSE;
3257 result = ns_config_get(maps, "hostname", &obj);
3258 if (result == ISC_R_SUCCESS) {
3259 CHECKM(setoptstring(server, &server->hostname, obj), "strdup");
3260 server->hostname_set = ISC_TRUE;
3262 server->hostname_set = ISC_FALSE;
3266 result = ns_config_get(maps, "server-id", &obj);
3267 server->server_usehostname = ISC_FALSE;
3268 if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) {
3269 server->server_usehostname = ISC_TRUE;
3270 } else if (result == ISC_R_SUCCESS) {
3271 CHECKM(setoptstring(server, &server->server_id, obj), "strdup");
3273 result = setstring(server, &server->server_id, NULL);
3274 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3278 result = ns_config_get(maps, "flush-zones-on-shutdown", &obj);
3279 if (result == ISC_R_SUCCESS) {
3280 server->flushonshutdown = cfg_obj_asboolean(obj);
3282 server->flushonshutdown = ISC_FALSE;
3285 result = ISC_R_SUCCESS;
3288 cfg_aclconfctx_destroy(&aclconfctx);
3290 if (parser != NULL) {
3292 cfg_obj_destroy(parser, &config);
3293 cfg_parser_destroy(&parser);
3297 dns_view_detach(&view);
3300 * This cleans up either the old production view list
3301 * or our temporary list depending on whether they
3302 * were swapped above or not.
3304 for (view = ISC_LIST_HEAD(viewlist);
3307 view_next = ISC_LIST_NEXT(view, link);
3308 ISC_LIST_UNLINK(viewlist, view, link);
3309 if (result == ISC_R_SUCCESS &&
3310 strcmp(view->name, "_bind") != 0)
3311 (void)dns_zt_apply(view->zonetable, ISC_FALSE,
3313 dns_view_detach(&view);
3317 * Adjust the listening interfaces in accordance with the source
3318 * addresses specified in views and zones.
3320 if (isc_net_probeipv6() == ISC_R_SUCCESS)
3321 adjust_interfaces(server, ns_g_mctx);
3323 /* Relinquish exclusive access to configuration data. */
3324 isc_task_endexclusive(server->task);
3326 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3327 ISC_LOG_DEBUG(1), "load_configuration: %s",
3328 isc_result_totext(result));
3334 load_zones(ns_server_t *server, isc_boolean_t stop) {
3335 isc_result_t result;
3338 result = isc_task_beginexclusive(server->task);
3339 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3342 * Load zone data from disk.
3344 for (view = ISC_LIST_HEAD(server->viewlist);
3346 view = ISC_LIST_NEXT(view, link))
3348 CHECK(dns_view_load(view, stop));
3352 * Force zone maintenance. Do this after loading
3353 * so that we know when we need to force AXFR of
3354 * slave zones whose master files are missing.
3356 CHECK(dns_zonemgr_forcemaint(server->zonemgr));
3358 isc_task_endexclusive(server->task);
3363 load_new_zones(ns_server_t *server, isc_boolean_t stop) {
3364 isc_result_t result;
3367 result = isc_task_beginexclusive(server->task);
3368 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3371 * Load zone data from disk.
3373 for (view = ISC_LIST_HEAD(server->viewlist);
3375 view = ISC_LIST_NEXT(view, link))
3377 CHECK(dns_view_loadnew(view, stop));
3380 * Force zone maintenance. Do this after loading
3381 * so that we know when we need to force AXFR of
3382 * slave zones whose master files are missing.
3384 dns_zonemgr_resumexfrs(server->zonemgr);
3386 isc_task_endexclusive(server->task);
3391 run_server(isc_task_t *task, isc_event_t *event) {
3392 isc_result_t result;
3393 ns_server_t *server = (ns_server_t *)event->ev_arg;
3395 INSIST(task == server->task);
3397 isc_event_free(&event);
3399 CHECKFATAL(dns_dispatchmgr_create(ns_g_mctx, ns_g_entropy,
3401 "creating dispatch manager");
3403 CHECKFATAL(ns_interfacemgr_create(ns_g_mctx, ns_g_taskmgr,
3404 ns_g_socketmgr, ns_g_dispatchmgr,
3405 &server->interfacemgr),
3406 "creating interface manager");
3408 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
3409 NULL, NULL, server->task,
3410 interface_timer_tick,
3411 server, &server->interface_timer),
3412 "creating interface timer");
3414 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
3415 NULL, NULL, server->task,
3416 heartbeat_timer_tick,
3417 server, &server->heartbeat_timer),
3418 "creating heartbeat timer");
3420 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
3421 NULL, NULL, server->task, pps_timer_tick,
3422 server, &server->pps_timer),
3423 "creating pps timer");
3425 CHECKFATAL(cfg_parser_create(ns_g_mctx, NULL, &ns_g_parser),
3426 "creating default configuration parser");
3428 if (ns_g_lwresdonly)
3429 CHECKFATAL(load_configuration(lwresd_g_conffile, server,
3431 "loading configuration");
3433 CHECKFATAL(load_configuration(ns_g_conffile, server, ISC_TRUE),
3434 "loading configuration");
3438 CHECKFATAL(load_zones(server, ISC_FALSE), "loading zones");
3441 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3442 ISC_LOG_NOTICE, "running");
3446 ns_server_flushonshutdown(ns_server_t *server, isc_boolean_t flush) {
3448 REQUIRE(NS_SERVER_VALID(server));
3450 server->flushonshutdown = flush;
3454 shutdown_server(isc_task_t *task, isc_event_t *event) {
3455 isc_result_t result;
3456 dns_view_t *view, *view_next;
3457 ns_server_t *server = (ns_server_t *)event->ev_arg;
3458 isc_boolean_t flush = server->flushonshutdown;
3461 INSIST(task == server->task);
3463 result = isc_task_beginexclusive(server->task);
3464 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3466 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3467 ISC_LOG_INFO, "shutting down%s",
3468 flush ? ": flushing changes" : "");
3470 ns_controls_shutdown(server->controls);
3471 end_reserved_dispatches(server, ISC_TRUE);
3473 cfg_obj_destroy(ns_g_parser, &ns_g_config);
3474 cfg_parser_destroy(&ns_g_parser);
3476 for (view = ISC_LIST_HEAD(server->viewlist);
3479 view_next = ISC_LIST_NEXT(view, link);
3480 ISC_LIST_UNLINK(server->viewlist, view, link);
3482 dns_view_flushanddetach(&view);
3484 dns_view_detach(&view);
3487 isc_timer_detach(&server->interface_timer);
3488 isc_timer_detach(&server->heartbeat_timer);
3489 isc_timer_detach(&server->pps_timer);
3491 ns_interfacemgr_shutdown(server->interfacemgr);
3492 ns_interfacemgr_detach(&server->interfacemgr);
3494 dns_dispatchmgr_destroy(&ns_g_dispatchmgr);
3496 dns_zonemgr_shutdown(server->zonemgr);
3498 if (server->blackholeacl != NULL)
3499 dns_acl_detach(&server->blackholeacl);
3501 dns_db_detach(&server->in_roothints);
3503 isc_task_endexclusive(server->task);
3505 isc_task_detach(&server->task);
3507 isc_event_free(&event);
3511 ns_server_create(isc_mem_t *mctx, ns_server_t **serverp) {
3512 isc_result_t result;
3514 ns_server_t *server = isc_mem_get(mctx, sizeof(*server));
3516 fatal("allocating server object", ISC_R_NOMEMORY);
3518 server->mctx = mctx;
3519 server->task = NULL;
3521 /* Initialize configuration data with default values. */
3523 result = isc_quota_init(&server->xfroutquota, 10);
3524 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3525 result = isc_quota_init(&server->tcpquota, 10);
3526 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3527 result = isc_quota_init(&server->recursionquota, 100);
3528 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3530 result = dns_aclenv_init(mctx, &server->aclenv);
3531 RUNTIME_CHECK(result == ISC_R_SUCCESS);
3533 /* Initialize server data structures. */
3534 server->zonemgr = NULL;
3535 server->interfacemgr = NULL;
3536 ISC_LIST_INIT(server->viewlist);
3537 server->in_roothints = NULL;
3538 server->blackholeacl = NULL;
3540 CHECKFATAL(dns_rootns_create(mctx, dns_rdataclass_in, NULL,
3541 &server->in_roothints),
3542 "setting up root hints");
3544 CHECKFATAL(isc_mutex_init(&server->reload_event_lock),
3545 "initializing reload event lock");
3546 server->reload_event =
3547 isc_event_allocate(ns_g_mctx, server,
3551 sizeof(isc_event_t));
3552 CHECKFATAL(server->reload_event == NULL ?
3553 ISC_R_NOMEMORY : ISC_R_SUCCESS,
3554 "allocating reload event");
3556 CHECKFATAL(dst_lib_init(ns_g_mctx, ns_g_entropy, ISC_ENTROPY_GOODONLY),
3557 "initializing DST");
3559 server->tkeyctx = NULL;
3560 CHECKFATAL(dns_tkeyctx_create(ns_g_mctx, ns_g_entropy,
3562 "creating TKEY context");
3565 * Setup the server task, which is responsible for coordinating
3566 * startup and shutdown of the server.
3568 CHECKFATAL(isc_task_create(ns_g_taskmgr, 0, &server->task),
3569 "creating server task");
3570 isc_task_setname(server->task, "server", server);
3571 CHECKFATAL(isc_task_onshutdown(server->task, shutdown_server, server),
3572 "isc_task_onshutdown");
3573 CHECKFATAL(isc_app_onrun(ns_g_mctx, server->task, run_server, server),
3576 server->interface_timer = NULL;
3577 server->heartbeat_timer = NULL;
3578 server->pps_timer = NULL;
3580 server->interface_interval = 0;
3581 server->heartbeat_interval = 0;
3583 CHECKFATAL(dns_zonemgr_create(ns_g_mctx, ns_g_taskmgr, ns_g_timermgr,
3584 ns_g_socketmgr, &server->zonemgr),
3585 "dns_zonemgr_create");
3587 server->statsfile = isc_mem_strdup(server->mctx, "named.stats");
3588 CHECKFATAL(server->statsfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
3590 server->querystats = NULL;
3592 server->dumpfile = isc_mem_strdup(server->mctx, "named_dump.db");
3593 CHECKFATAL(server->dumpfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
3596 server->recfile = isc_mem_strdup(server->mctx, "named.recursing");
3597 CHECKFATAL(server->recfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
3600 server->hostname_set = ISC_FALSE;
3601 server->hostname = NULL;
3602 server->version_set = ISC_FALSE;
3603 server->version = NULL;
3604 server->server_usehostname = ISC_FALSE;
3605 server->server_id = NULL;
3607 CHECKFATAL(dns_stats_alloccounters(ns_g_mctx, &server->querystats),
3608 "dns_stats_alloccounters");
3610 server->flushonshutdown = ISC_FALSE;
3611 server->log_queries = ISC_FALSE;
3613 server->controls = NULL;
3614 CHECKFATAL(ns_controls_create(server, &server->controls),
3615 "ns_controls_create");
3616 server->dispatchgen = 0;
3617 ISC_LIST_INIT(server->dispatches);
3619 server->magic = NS_SERVER_MAGIC;
3624 ns_server_destroy(ns_server_t **serverp) {
3625 ns_server_t *server = *serverp;
3626 REQUIRE(NS_SERVER_VALID(server));
3628 ns_controls_destroy(&server->controls);
3630 dns_stats_freecounters(server->mctx, &server->querystats);
3632 isc_mem_free(server->mctx, server->statsfile);
3633 isc_mem_free(server->mctx, server->dumpfile);
3634 isc_mem_free(server->mctx, server->recfile);
3636 if (server->version != NULL)
3637 isc_mem_free(server->mctx, server->version);
3638 if (server->hostname != NULL)
3639 isc_mem_free(server->mctx, server->hostname);
3640 if (server->server_id != NULL)
3641 isc_mem_free(server->mctx, server->server_id);
3643 dns_zonemgr_detach(&server->zonemgr);
3645 if (server->tkeyctx != NULL)
3646 dns_tkeyctx_destroy(&server->tkeyctx);
3650 isc_event_free(&server->reload_event);
3652 INSIST(ISC_LIST_EMPTY(server->viewlist));
3654 dns_aclenv_destroy(&server->aclenv);
3656 isc_quota_destroy(&server->recursionquota);
3657 isc_quota_destroy(&server->tcpquota);
3658 isc_quota_destroy(&server->xfroutquota);
3661 isc_mem_put(server->mctx, server, sizeof(*server));
3666 fatal(const char *msg, isc_result_t result) {
3667 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3668 ISC_LOG_CRITICAL, "%s: %s", msg,
3669 isc_result_totext(result));
3670 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
3671 ISC_LOG_CRITICAL, "exiting (due to fatal error)");
3676 start_reserved_dispatches(ns_server_t *server) {
3678 REQUIRE(NS_SERVER_VALID(server));
3680 server->dispatchgen++;
3684 end_reserved_dispatches(ns_server_t *server, isc_boolean_t all) {
3685 ns_dispatch_t *dispatch, *nextdispatch;
3687 REQUIRE(NS_SERVER_VALID(server));
3689 for (dispatch = ISC_LIST_HEAD(server->dispatches);
3691 dispatch = nextdispatch) {
3692 nextdispatch = ISC_LIST_NEXT(dispatch, link);
3693 if (!all && server->dispatchgen == dispatch-> dispatchgen)
3695 ISC_LIST_UNLINK(server->dispatches, dispatch, link);
3696 dns_dispatch_detach(&dispatch->dispatch);
3697 isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
3702 ns_add_reserved_dispatch(ns_server_t *server, const isc_sockaddr_t *addr) {
3703 ns_dispatch_t *dispatch;
3705 char addrbuf[ISC_SOCKADDR_FORMATSIZE];
3706 isc_result_t result;
3707 unsigned int attrs, attrmask;
3709 REQUIRE(NS_SERVER_VALID(server));
3711 port = isc_sockaddr_getport(addr);
3712 if (port == 0 || port >= 1024)
3715 for (dispatch = ISC_LIST_HEAD(server->dispatches);
3717 dispatch = ISC_LIST_NEXT(dispatch, link)) {
3718 if (isc_sockaddr_equal(&dispatch->addr, addr))
3721 if (dispatch != NULL) {
3722 dispatch->dispatchgen = server->dispatchgen;
3726 dispatch = isc_mem_get(server->mctx, sizeof(*dispatch));
3727 if (dispatch == NULL) {
3728 result = ISC_R_NOMEMORY;
3732 dispatch->addr = *addr;
3733 dispatch->dispatchgen = server->dispatchgen;
3734 dispatch->dispatch = NULL;
3737 attrs |= DNS_DISPATCHATTR_UDP;
3738 switch (isc_sockaddr_pf(addr)) {
3740 attrs |= DNS_DISPATCHATTR_IPV4;
3743 attrs |= DNS_DISPATCHATTR_IPV6;
3746 result = ISC_R_NOTIMPLEMENTED;
3750 attrmask |= DNS_DISPATCHATTR_UDP;
3751 attrmask |= DNS_DISPATCHATTR_TCP;
3752 attrmask |= DNS_DISPATCHATTR_IPV4;
3753 attrmask |= DNS_DISPATCHATTR_IPV6;
3755 result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
3756 ns_g_taskmgr, &dispatch->addr, 4096,
3757 1000, 32768, 16411, 16433,
3758 attrs, attrmask, &dispatch->dispatch);
3759 if (result != ISC_R_SUCCESS)
3762 ISC_LIST_INITANDPREPEND(server->dispatches, dispatch, link);
3767 if (dispatch != NULL)
3768 isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
3769 isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf));
3770 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3771 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
3772 "unable to create dispatch for reserved port %s: %s",
3773 addrbuf, isc_result_totext(result));
3778 loadconfig(ns_server_t *server) {
3779 isc_result_t result;
3780 start_reserved_dispatches(server);
3781 result = load_configuration(ns_g_lwresdonly ?
3782 lwresd_g_conffile : ns_g_conffile,
3784 if (result == ISC_R_SUCCESS)
3785 end_reserved_dispatches(server, ISC_FALSE);
3787 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3788 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
3789 "reloading configuration failed: %s",
3790 isc_result_totext(result));
3795 reload(ns_server_t *server) {
3796 isc_result_t result;
3797 CHECK(loadconfig(server));
3799 result = load_zones(server, ISC_FALSE);
3800 if (result != ISC_R_SUCCESS) {
3801 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3802 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
3803 "reloading zones failed: %s",
3804 isc_result_totext(result));
3811 reconfig(ns_server_t *server) {
3812 isc_result_t result;
3813 CHECK(loadconfig(server));
3815 result = load_new_zones(server, ISC_FALSE);
3816 if (result != ISC_R_SUCCESS) {
3817 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3818 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
3819 "loading new zones failed: %s",
3820 isc_result_totext(result));
3826 * Handle a reload event (from SIGHUP).
3829 ns_server_reload(isc_task_t *task, isc_event_t *event) {
3830 ns_server_t *server = (ns_server_t *)event->ev_arg;
3832 INSIST(task = server->task);
3835 (void)reload(server);
3837 LOCK(&server->reload_event_lock);
3838 INSIST(server->reload_event == NULL);
3839 server->reload_event = event;
3840 UNLOCK(&server->reload_event_lock);
3844 ns_server_reloadwanted(ns_server_t *server) {
3845 LOCK(&server->reload_event_lock);
3846 if (server->reload_event != NULL)
3847 isc_task_send(server->task, &server->reload_event);
3848 UNLOCK(&server->reload_event_lock);
3852 next_token(char **stringp, const char *delim) {
3856 res = strsep(stringp, delim);
3859 } while (*res == '\0');
3864 * Find the zone specified in the control channel command 'args',
3865 * if any. If a zone is specified, point '*zonep' at it, otherwise
3866 * set '*zonep' to NULL.
3869 zone_from_args(ns_server_t *server, char *args, dns_zone_t **zonep) {
3871 const char *zonetxt;
3873 const char *viewtxt = NULL;
3874 dns_fixedname_t name;
3875 isc_result_t result;
3877 dns_view_t *view = NULL;
3878 dns_rdataclass_t rdclass;
3880 REQUIRE(zonep != NULL && *zonep == NULL);
3884 /* Skip the command name. */
3885 ptr = next_token(&input, " \t");
3887 return (ISC_R_UNEXPECTEDEND);
3889 /* Look for the zone name. */
3890 zonetxt = next_token(&input, " \t");
3891 if (zonetxt == NULL)
3892 return (ISC_R_SUCCESS);
3894 /* Look for the optional class name. */
3895 classtxt = next_token(&input, " \t");
3896 if (classtxt != NULL) {
3897 /* Look for the optional view name. */
3898 viewtxt = next_token(&input, " \t");
3901 isc_buffer_init(&buf, zonetxt, strlen(zonetxt));
3902 isc_buffer_add(&buf, strlen(zonetxt));
3903 dns_fixedname_init(&name);
3904 result = dns_name_fromtext(dns_fixedname_name(&name),
3905 &buf, dns_rootname, ISC_FALSE, NULL);
3906 if (result != ISC_R_SUCCESS)
3909 if (classtxt != NULL) {
3912 r.length = strlen(classtxt);
3913 result = dns_rdataclass_fromtext(&rdclass, &r);
3914 if (result != ISC_R_SUCCESS)
3917 rdclass = dns_rdataclass_in;
3920 if (viewtxt == NULL)
3921 viewtxt = "_default";
3922 result = dns_viewlist_find(&server->viewlist, viewtxt,
3924 if (result != ISC_R_SUCCESS)
3927 result = dns_zt_find(view->zonetable, dns_fixedname_name(&name),
3929 /* Partial match? */
3930 if (result != ISC_R_SUCCESS && *zonep != NULL)
3931 dns_zone_detach(zonep);
3932 dns_view_detach(&view);
3938 * Act on a "retransfer" command from the command channel.
3941 ns_server_retransfercommand(ns_server_t *server, char *args) {
3942 isc_result_t result;
3943 dns_zone_t *zone = NULL;
3944 dns_zonetype_t type;
3946 result = zone_from_args(server, args, &zone);
3947 if (result != ISC_R_SUCCESS)
3950 return (ISC_R_UNEXPECTEDEND);
3951 type = dns_zone_gettype(zone);
3952 if (type == dns_zone_slave || type == dns_zone_stub)
3953 dns_zone_forcereload(zone);
3955 result = ISC_R_NOTFOUND;
3956 dns_zone_detach(&zone);
3961 * Act on a "reload" command from the command channel.
3964 ns_server_reloadcommand(ns_server_t *server, char *args, isc_buffer_t *text) {
3965 isc_result_t result;
3966 dns_zone_t *zone = NULL;
3967 dns_zonetype_t type;
3968 const char *msg = NULL;
3970 result = zone_from_args(server, args, &zone);
3971 if (result != ISC_R_SUCCESS)
3974 result = reload(server);
3975 if (result == ISC_R_SUCCESS)
3976 msg = "server reload successful";
3978 type = dns_zone_gettype(zone);
3979 if (type == dns_zone_slave || type == dns_zone_stub) {
3980 dns_zone_refresh(zone);
3981 dns_zone_detach(&zone);
3982 msg = "zone refresh queued";
3984 result = dns_zone_load(zone);
3985 dns_zone_detach(&zone);
3988 msg = "zone reload successful";
3990 case DNS_R_CONTINUE:
3991 msg = "zone reload queued";
3992 result = ISC_R_SUCCESS;
3994 case DNS_R_UPTODATE:
3995 msg = "zone reload up-to-date";
3996 result = ISC_R_SUCCESS;
3999 /* failure message will be generated by rndc */
4004 if (msg != NULL && strlen(msg) < isc_buffer_availablelength(text))
4005 isc_buffer_putmem(text, (const unsigned char *)msg,
4011 * Act on a "reconfig" command from the command channel.
4014 ns_server_reconfigcommand(ns_server_t *server, char *args) {
4018 return (ISC_R_SUCCESS);
4022 * Act on a "notify" command from the command channel.
4025 ns_server_notifycommand(ns_server_t *server, char *args, isc_buffer_t *text) {
4026 isc_result_t result;
4027 dns_zone_t *zone = NULL;
4028 const unsigned char msg[] = "zone notify queued";
4030 result = zone_from_args(server, args, &zone);
4031 if (result != ISC_R_SUCCESS)
4034 return (ISC_R_UNEXPECTEDEND);
4036 dns_zone_notify(zone);
4037 dns_zone_detach(&zone);
4038 if (sizeof(msg) <= isc_buffer_availablelength(text))
4039 isc_buffer_putmem(text, msg, sizeof(msg));
4041 return (ISC_R_SUCCESS);
4045 * Act on a "refresh" command from the command channel.
4048 ns_server_refreshcommand(ns_server_t *server, char *args, isc_buffer_t *text) {
4049 isc_result_t result;
4050 dns_zone_t *zone = NULL;
4051 const unsigned char msg1[] = "zone refresh queued";
4052 const unsigned char msg2[] = "not a slave or stub zone";
4053 dns_zonetype_t type;
4055 result = zone_from_args(server, args, &zone);
4056 if (result != ISC_R_SUCCESS)
4059 return (ISC_R_UNEXPECTEDEND);
4061 type = dns_zone_gettype(zone);
4062 if (type == dns_zone_slave || type == dns_zone_stub) {
4063 dns_zone_refresh(zone);
4064 dns_zone_detach(&zone);
4065 if (sizeof(msg1) <= isc_buffer_availablelength(text))
4066 isc_buffer_putmem(text, msg1, sizeof(msg1));
4067 return (ISC_R_SUCCESS);
4070 dns_zone_detach(&zone);
4071 if (sizeof(msg2) <= isc_buffer_availablelength(text))
4072 isc_buffer_putmem(text, msg2, sizeof(msg2));
4073 return (ISC_R_FAILURE);
4077 ns_server_togglequerylog(ns_server_t *server) {
4078 server->log_queries = server->log_queries ? ISC_FALSE : ISC_TRUE;
4080 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4081 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4082 "query logging is now %s",
4083 server->log_queries ? "on" : "off");
4084 return (ISC_R_SUCCESS);
4088 ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
4089 cfg_aclconfctx_t *actx,
4090 isc_mem_t *mctx, ns_listenlist_t **target)
4092 isc_result_t result;
4093 const cfg_listelt_t *element;
4094 ns_listenlist_t *dlist = NULL;
4096 REQUIRE(target != NULL && *target == NULL);
4098 result = ns_listenlist_create(mctx, &dlist);
4099 if (result != ISC_R_SUCCESS)
4102 for (element = cfg_list_first(listenlist);
4104 element = cfg_list_next(element))
4106 ns_listenelt_t *delt = NULL;
4107 const cfg_obj_t *listener = cfg_listelt_value(element);
4108 result = ns_listenelt_fromconfig(listener, config, actx,
4110 if (result != ISC_R_SUCCESS)
4112 ISC_LIST_APPEND(dlist->elts, delt, link);
4115 return (ISC_R_SUCCESS);
4118 ns_listenlist_detach(&dlist);
4123 * Create a listen list from the corresponding configuration
4127 ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
4128 cfg_aclconfctx_t *actx,
4129 isc_mem_t *mctx, ns_listenelt_t **target)
4131 isc_result_t result;
4132 const cfg_obj_t *portobj;
4134 ns_listenelt_t *delt = NULL;
4135 REQUIRE(target != NULL && *target == NULL);
4137 portobj = cfg_tuple_get(listener, "port");
4138 if (!cfg_obj_isuint32(portobj)) {
4139 if (ns_g_port != 0) {
4142 result = ns_config_getport(config, &port);
4143 if (result != ISC_R_SUCCESS)
4147 if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
4148 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
4149 "port value '%u' is out of range",
4150 cfg_obj_asuint32(portobj));
4151 return (ISC_R_RANGE);
4153 port = (in_port_t)cfg_obj_asuint32(portobj);
4156 result = ns_listenelt_create(mctx, port, NULL, &delt);
4157 if (result != ISC_R_SUCCESS)
4160 result = cfg_acl_fromconfig(cfg_tuple_get(listener, "acl"),
4161 config, ns_g_lctx, actx, mctx, &delt->acl);
4162 if (result != ISC_R_SUCCESS) {
4163 ns_listenelt_destroy(delt);
4167 return (ISC_R_SUCCESS);
4171 ns_server_dumpstats(ns_server_t *server) {
4172 isc_result_t result;
4173 dns_zone_t *zone, *next;
4179 isc_stdtime_get(&now);
4181 CHECKMF(isc_stdio_open(server->statsfile, "a", &fp),
4182 "could not open statistics dump file", server->statsfile);
4184 ncounters = DNS_STATS_NCOUNTERS;
4185 fprintf(fp, "+++ Statistics Dump +++ (%lu)\n", (unsigned long)now);
4187 for (i = 0; i < ncounters; i++)
4188 fprintf(fp, "%s %" ISC_PRINT_QUADFORMAT "u\n",
4189 dns_statscounter_names[i],
4190 server->querystats[i]);
4193 for (result = dns_zone_first(server->zonemgr, &zone);
4194 result == ISC_R_SUCCESS;
4195 next = NULL, result = dns_zone_next(zone, &next), zone = next)
4197 isc_uint64_t *zonestats = dns_zone_getstatscounters(zone);
4198 if (zonestats != NULL) {
4199 char zonename[DNS_NAME_FORMATSIZE];
4203 dns_name_format(dns_zone_getorigin(zone),
4204 zonename, sizeof(zonename));
4205 view = dns_zone_getview(zone);
4206 viewname = view->name;
4207 for (i = 0; i < ncounters; i++) {
4208 fprintf(fp, "%s %" ISC_PRINT_QUADFORMAT
4210 dns_statscounter_names[i],
4213 if (strcmp(viewname, "_default") != 0)
4214 fprintf(fp, " %s", viewname);
4219 if (result == ISC_R_NOMORE)
4220 result = ISC_R_SUCCESS;
4223 fprintf(fp, "--- Statistics Dump --- (%lu)\n", (unsigned long)now);
4227 (void)isc_stdio_close(fp);
4232 add_zone_tolist(dns_zone_t *zone, void *uap) {
4233 struct dumpcontext *dctx = uap;
4234 struct zonelistentry *zle;
4236 zle = isc_mem_get(dctx->mctx, sizeof *zle);
4238 return (ISC_R_NOMEMORY);
4240 dns_zone_attach(zone, &zle->zone);
4241 ISC_LINK_INIT(zle, link);
4242 ISC_LIST_APPEND(ISC_LIST_TAIL(dctx->viewlist)->zonelist, zle, link);
4243 return (ISC_R_SUCCESS);
4247 add_view_tolist(struct dumpcontext *dctx, dns_view_t *view) {
4248 struct viewlistentry *vle;
4249 isc_result_t result = ISC_R_SUCCESS;
4252 * Prevent duplicate views.
4254 for (vle = ISC_LIST_HEAD(dctx->viewlist);
4256 vle = ISC_LIST_NEXT(vle, link))
4257 if (vle->view == view)
4258 return (ISC_R_SUCCESS);
4260 vle = isc_mem_get(dctx->mctx, sizeof *vle);
4262 return (ISC_R_NOMEMORY);
4264 dns_view_attach(view, &vle->view);
4265 ISC_LINK_INIT(vle, link);
4266 ISC_LIST_INIT(vle->zonelist);
4267 ISC_LIST_APPEND(dctx->viewlist, vle, link);
4268 if (dctx->dumpzones)
4269 result = dns_zt_apply(view->zonetable, ISC_TRUE,
4270 add_zone_tolist, dctx);
4275 dumpcontext_destroy(struct dumpcontext *dctx) {
4276 struct viewlistentry *vle;
4277 struct zonelistentry *zle;
4279 vle = ISC_LIST_HEAD(dctx->viewlist);
4280 while (vle != NULL) {
4281 ISC_LIST_UNLINK(dctx->viewlist, vle, link);
4282 zle = ISC_LIST_HEAD(vle->zonelist);
4283 while (zle != NULL) {
4284 ISC_LIST_UNLINK(vle->zonelist, zle, link);
4285 dns_zone_detach(&zle->zone);
4286 isc_mem_put(dctx->mctx, zle, sizeof *zle);
4287 zle = ISC_LIST_HEAD(vle->zonelist);
4289 dns_view_detach(&vle->view);
4290 isc_mem_put(dctx->mctx, vle, sizeof *vle);
4291 vle = ISC_LIST_HEAD(dctx->viewlist);
4293 if (dctx->version != NULL)
4294 dns_db_closeversion(dctx->db, &dctx->version, ISC_FALSE);
4295 if (dctx->db != NULL)
4296 dns_db_detach(&dctx->db);
4297 if (dctx->cache != NULL)
4298 dns_db_detach(&dctx->cache);
4299 if (dctx->task != NULL)
4300 isc_task_detach(&dctx->task);
4301 if (dctx->fp != NULL)
4302 (void)isc_stdio_close(dctx->fp);
4303 if (dctx->mdctx != NULL)
4304 dns_dumpctx_detach(&dctx->mdctx);
4305 isc_mem_put(dctx->mctx, dctx, sizeof *dctx);
4309 dumpdone(void *arg, isc_result_t result) {
4310 struct dumpcontext *dctx = arg;
4312 const dns_master_style_t *style;
4314 if (result != ISC_R_SUCCESS)
4316 if (dctx->mdctx != NULL)
4317 dns_dumpctx_detach(&dctx->mdctx);
4318 if (dctx->view == NULL) {
4319 dctx->view = ISC_LIST_HEAD(dctx->viewlist);
4320 if (dctx->view == NULL)
4322 INSIST(dctx->zone == NULL);
4326 fprintf(dctx->fp, ";\n; Start view %s\n;\n", dctx->view->view->name);
4328 if (dctx->zone == NULL && dctx->cache == NULL && dctx->dumpcache) {
4329 style = &dns_master_style_cache;
4330 /* start cache dump */
4331 if (dctx->view->view->cachedb != NULL)
4332 dns_db_attach(dctx->view->view->cachedb, &dctx->cache);
4333 if (dctx->cache != NULL) {
4335 fprintf(dctx->fp, ";\n; Cache dump of view '%s'\n;\n",
4336 dctx->view->view->name);
4337 result = dns_master_dumptostreaminc(dctx->mctx,
4343 if (result == DNS_R_CONTINUE)
4345 if (result == ISC_R_NOTIMPLEMENTED)
4346 fprintf(dctx->fp, "; %s\n",
4347 dns_result_totext(result));
4348 else if (result != ISC_R_SUCCESS)
4352 if (dctx->cache != NULL) {
4353 dns_adb_dump(dctx->view->view->adb, dctx->fp);
4354 dns_db_detach(&dctx->cache);
4356 if (dctx->dumpzones) {
4357 style = &dns_master_style_full;
4359 if (dctx->version != NULL)
4360 dns_db_closeversion(dctx->db, &dctx->version,
4362 if (dctx->db != NULL)
4363 dns_db_detach(&dctx->db);
4364 if (dctx->zone == NULL)
4365 dctx->zone = ISC_LIST_HEAD(dctx->view->zonelist);
4367 dctx->zone = ISC_LIST_NEXT(dctx->zone, link);
4368 if (dctx->zone != NULL) {
4369 /* start zone dump */
4370 dns_zone_name(dctx->zone->zone, buf, sizeof(buf));
4371 fprintf(dctx->fp, ";\n; Zone dump of '%s'\n;\n", buf);
4372 result = dns_zone_getdb(dctx->zone->zone, &dctx->db);
4373 if (result != ISC_R_SUCCESS) {
4374 fprintf(dctx->fp, "; %s\n",
4375 dns_result_totext(result));
4378 dns_db_currentversion(dctx->db, &dctx->version);
4379 result = dns_master_dumptostreaminc(dctx->mctx,
4386 if (result == DNS_R_CONTINUE)
4388 if (result == ISC_R_NOTIMPLEMENTED) {
4389 fprintf(dctx->fp, "; %s\n",
4390 dns_result_totext(result));
4391 result = ISC_R_SUCCESS;
4394 if (result != ISC_R_SUCCESS)
4398 if (dctx->view != NULL)
4399 dctx->view = ISC_LIST_NEXT(dctx->view, link);
4400 if (dctx->view != NULL)
4403 fprintf(dctx->fp, "; Dump complete\n");
4404 result = isc_stdio_flush(dctx->fp);
4405 if (result == ISC_R_SUCCESS)
4406 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4407 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4410 if (result != ISC_R_SUCCESS)
4411 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4412 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4413 "dumpdb failed: %s", dns_result_totext(result));
4414 dumpcontext_destroy(dctx);
4418 ns_server_dumpdb(ns_server_t *server, char *args) {
4419 struct dumpcontext *dctx = NULL;
4421 isc_result_t result;
4425 /* Skip the command name. */
4426 ptr = next_token(&args, " \t");
4428 return (ISC_R_UNEXPECTEDEND);
4430 dctx = isc_mem_get(server->mctx, sizeof(*dctx));
4432 return (ISC_R_NOMEMORY);
4434 dctx->mctx = server->mctx;
4435 dctx->dumpcache = ISC_TRUE;
4436 dctx->dumpzones = ISC_FALSE;
4438 ISC_LIST_INIT(dctx->viewlist);
4446 dctx->version = NULL;
4447 isc_task_attach(server->task, &dctx->task);
4449 CHECKMF(isc_stdio_open(server->dumpfile, "w", &dctx->fp),
4450 "could not open dump file", server->dumpfile);
4452 sep = (args == NULL) ? "" : ": ";
4453 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4454 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4455 "dumpdb started%s%s", sep, (args != NULL) ? args : "");
4457 ptr = next_token(&args, " \t");
4458 if (ptr != NULL && strcmp(ptr, "-all") == 0) {
4459 dctx->dumpzones = ISC_TRUE;
4460 dctx->dumpcache = ISC_TRUE;
4461 ptr = next_token(&args, " \t");
4462 } else if (ptr != NULL && strcmp(ptr, "-cache") == 0) {
4463 dctx->dumpzones = ISC_FALSE;
4464 dctx->dumpcache = ISC_TRUE;
4465 ptr = next_token(&args, " \t");
4466 } else if (ptr != NULL && strcmp(ptr, "-zones") == 0) {
4467 dctx->dumpzones = ISC_TRUE;
4468 dctx->dumpcache = ISC_FALSE;
4469 ptr = next_token(&args, " \t");
4473 for (view = ISC_LIST_HEAD(server->viewlist);
4475 view = ISC_LIST_NEXT(view, link))
4477 if (ptr != NULL && strcmp(view->name, ptr) != 0)
4479 CHECK(add_view_tolist(dctx, view));
4482 ptr = next_token(&args, " \t");
4486 dumpdone(dctx, ISC_R_SUCCESS);
4487 return (ISC_R_SUCCESS);
4491 dumpcontext_destroy(dctx);
4496 ns_server_dumprecursing(ns_server_t *server) {
4498 isc_result_t result;
4500 CHECKMF(isc_stdio_open(server->recfile, "w", &fp),
4501 "could not open dump file", server->recfile);
4502 fprintf(fp,";\n; Recursing Queries\n;\n");
4503 ns_interfacemgr_dumprecursing(fp, server->interfacemgr);
4504 fprintf(fp, "; Dump complete\n");
4508 result = isc_stdio_close(fp);
4513 ns_server_setdebuglevel(ns_server_t *server, char *args) {
4521 /* Skip the command name. */
4522 ptr = next_token(&args, " \t");
4524 return (ISC_R_UNEXPECTEDEND);
4526 /* Look for the new level name. */
4527 levelstr = next_token(&args, " \t");
4528 if (levelstr == NULL) {
4529 if (ns_g_debuglevel < 99)
4532 newlevel = strtol(levelstr, &endp, 10);
4533 if (*endp != '\0' || newlevel < 0 || newlevel > 99)
4534 return (ISC_R_RANGE);
4535 ns_g_debuglevel = (unsigned int)newlevel;
4537 isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
4538 return (ISC_R_SUCCESS);
4542 ns_server_validation(ns_server_t *server, char *args) {
4543 char *ptr, *viewname;
4545 isc_boolean_t changed = ISC_FALSE;
4546 isc_result_t result;
4547 isc_boolean_t enable;
4549 /* Skip the command name. */
4550 ptr = next_token(&args, " \t");
4552 return (ISC_R_UNEXPECTEDEND);
4554 /* Find out what we are to do. */
4555 ptr = next_token(&args, " \t");
4557 return (ISC_R_UNEXPECTEDEND);
4559 if (!strcasecmp(ptr, "on") || !strcasecmp(ptr, "yes") ||
4560 !strcasecmp(ptr, "enable") || !strcasecmp(ptr, "true"))
4562 else if (!strcasecmp(ptr, "off") || !strcasecmp(ptr, "no") ||
4563 !strcasecmp(ptr, "disable") || !strcasecmp(ptr, "false"))
4566 return (DNS_R_SYNTAX);
4568 /* Look for the view name. */
4569 viewname = next_token(&args, " \t");
4571 result = isc_task_beginexclusive(server->task);
4572 RUNTIME_CHECK(result == ISC_R_SUCCESS);
4573 for (view = ISC_LIST_HEAD(server->viewlist);
4575 view = ISC_LIST_NEXT(view, link))
4577 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
4579 result = dns_view_flushcache(view);
4580 if (result != ISC_R_SUCCESS)
4582 view->enablevalidation = enable;
4586 result = ISC_R_SUCCESS;
4588 result = ISC_R_FAILURE;
4590 isc_task_endexclusive(server->task);
4595 ns_server_flushcache(ns_server_t *server, char *args) {
4596 char *ptr, *viewname;
4598 isc_boolean_t flushed;
4599 isc_boolean_t found;
4600 isc_result_t result;
4602 /* Skip the command name. */
4603 ptr = next_token(&args, " \t");
4605 return (ISC_R_UNEXPECTEDEND);
4607 /* Look for the view name. */
4608 viewname = next_token(&args, " \t");
4610 result = isc_task_beginexclusive(server->task);
4611 RUNTIME_CHECK(result == ISC_R_SUCCESS);
4614 for (view = ISC_LIST_HEAD(server->viewlist);
4616 view = ISC_LIST_NEXT(view, link))
4618 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
4621 result = dns_view_flushcache(view);
4622 if (result != ISC_R_SUCCESS)
4623 flushed = ISC_FALSE;
4625 if (flushed && found) {
4626 result = ISC_R_SUCCESS;
4629 result = ISC_R_NOTFOUND;
4631 result = ISC_R_FAILURE;
4633 isc_task_endexclusive(server->task);
4638 ns_server_flushname(ns_server_t *server, char *args) {
4639 char *ptr, *target, *viewname;
4641 isc_boolean_t flushed;
4642 isc_boolean_t found;
4643 isc_result_t result;
4645 dns_fixedname_t fixed;
4648 /* Skip the command name. */
4649 ptr = next_token(&args, " \t");
4651 return (ISC_R_UNEXPECTEDEND);
4653 /* Find the domain name to flush. */
4654 target = next_token(&args, " \t");
4656 return (ISC_R_UNEXPECTEDEND);
4658 isc_buffer_init(&b, target, strlen(target));
4659 isc_buffer_add(&b, strlen(target));
4660 dns_fixedname_init(&fixed);
4661 name = dns_fixedname_name(&fixed);
4662 result = dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL);
4663 if (result != ISC_R_SUCCESS)
4666 /* Look for the view name. */
4667 viewname = next_token(&args, " \t");
4669 result = isc_task_beginexclusive(server->task);
4670 RUNTIME_CHECK(result == ISC_R_SUCCESS);
4673 for (view = ISC_LIST_HEAD(server->viewlist);
4675 view = ISC_LIST_NEXT(view, link))
4677 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
4680 result = dns_view_flushname(view, name);
4681 if (result != ISC_R_SUCCESS)
4682 flushed = ISC_FALSE;
4684 if (flushed && found)
4685 result = ISC_R_SUCCESS;
4687 result = ISC_R_NOTFOUND;
4689 result = ISC_R_FAILURE;
4690 isc_task_endexclusive(server->task);
4695 ns_server_status(ns_server_t *server, isc_buffer_t *text) {
4696 int zonecount, xferrunning, xferdeferred, soaqueries;
4699 zonecount = dns_zonemgr_getcount(server->zonemgr, DNS_ZONESTATE_ANY);
4700 xferrunning = dns_zonemgr_getcount(server->zonemgr,
4701 DNS_ZONESTATE_XFERRUNNING);
4702 xferdeferred = dns_zonemgr_getcount(server->zonemgr,
4703 DNS_ZONESTATE_XFERDEFERRED);
4704 soaqueries = dns_zonemgr_getcount(server->zonemgr,
4705 DNS_ZONESTATE_SOAQUERY);
4706 n = snprintf((char *)isc_buffer_used(text),
4707 isc_buffer_availablelength(text),
4708 "number of zones: %u\n"
4710 "xfers running: %u\n"
4711 "xfers deferred: %u\n"
4712 "soa queries in progress: %u\n"
4713 "query logging is %s\n"
4714 "recursive clients: %d/%d/%d\n"
4715 "tcp clients: %d/%d\n"
4716 "server is up and running",
4717 zonecount, ns_g_debuglevel, xferrunning, xferdeferred,
4718 soaqueries, server->log_queries ? "ON" : "OFF",
4719 server->recursionquota.used, server->recursionquota.soft,
4720 server->recursionquota.max,
4721 server->tcpquota.used, server->tcpquota.max);
4722 if (n >= isc_buffer_availablelength(text))
4723 return (ISC_R_NOSPACE);
4724 isc_buffer_add(text, n);
4725 return (ISC_R_SUCCESS);
4729 * Act on a "freeze" or "thaw" command from the command channel.
4732 ns_server_freeze(ns_server_t *server, isc_boolean_t freeze, char *args) {
4733 isc_result_t result, tresult;
4734 dns_zone_t *zone = NULL;
4735 dns_zonetype_t type;
4736 char classstr[DNS_RDATACLASS_FORMATSIZE];
4737 char zonename[DNS_NAME_FORMATSIZE];
4740 const char *vname, *sep;
4741 isc_boolean_t frozen;
4743 result = zone_from_args(server, args, &zone);
4744 if (result != ISC_R_SUCCESS)
4747 result = isc_task_beginexclusive(server->task);
4748 RUNTIME_CHECK(result == ISC_R_SUCCESS);
4749 tresult = ISC_R_SUCCESS;
4750 for (view = ISC_LIST_HEAD(server->viewlist);
4752 view = ISC_LIST_NEXT(view, link)) {
4753 result = dns_view_freezezones(view, freeze);
4754 if (result != ISC_R_SUCCESS &&
4755 tresult == ISC_R_SUCCESS)
4758 isc_task_endexclusive(server->task);
4759 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4760 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4762 freeze ? "freezing" : "thawing",
4763 isc_result_totext(tresult));
4766 type = dns_zone_gettype(zone);
4767 if (type != dns_zone_master) {
4768 dns_zone_detach(&zone);
4769 return (ISC_R_NOTFOUND);
4772 frozen = dns_zone_getupdatedisabled(zone);
4775 result = DNS_R_FROZEN;
4776 if (result == ISC_R_SUCCESS)
4777 result = dns_zone_flush(zone);
4778 if (result == ISC_R_SUCCESS) {
4779 journal = dns_zone_getjournal(zone);
4780 if (journal != NULL)
4781 (void)isc_file_remove(journal);
4785 result = dns_zone_load(zone);
4786 if (result == DNS_R_CONTINUE ||
4787 result == DNS_R_UPTODATE)
4788 result = ISC_R_SUCCESS;
4791 if (result == ISC_R_SUCCESS)
4792 dns_zone_setupdatedisabled(zone, freeze);
4794 view = dns_zone_getview(zone);
4795 if (strcmp(view->name, "_bind") == 0 ||
4796 strcmp(view->name, "_default") == 0)
4804 dns_rdataclass_format(dns_zone_getclass(zone), classstr,
4806 dns_name_format(dns_zone_getorigin(zone),
4807 zonename, sizeof(zonename));
4808 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4809 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4810 "%s zone '%s/%s'%s%s: %s",
4811 freeze ? "freezing" : "thawing",
4812 zonename, classstr, sep, vname,
4813 isc_result_totext(result));
4814 dns_zone_detach(&zone);
4820 * This function adds a message for rndc to echo if named
4821 * is managed by smf and is also running chroot.
4824 ns_smf_add_message(isc_buffer_t *text) {
4827 n = snprintf((char *)isc_buffer_used(text),
4828 isc_buffer_availablelength(text),
4829 "use svcadm(1M) to manage named");
4830 if (n >= isc_buffer_availablelength(text))
4831 return (ISC_R_NOSPACE);
4832 isc_buffer_add(text, n);
4833 return (ISC_R_SUCCESS);
4835 #endif /* HAVE_LIBSCF */