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etc/services - sync with NetBSD-8
[minix.git] / external / bsd / bind / dist / bin / named / server.c
blob68314d2a2628a2df776811e5e63849f88f879f31
1 /* $NetBSD: server.c,v 1.19 2015/07/08 17:28:55 christos Exp $ */
2
3 /*
4 * Copyright (C) 2004-2015 Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 1999-2003 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /*! \file */
21
22 #include <config.h>
23
24 #include <stdlib.h>
25 #include <unistd.h>
26 #include <limits.h>
27 #include <ctype.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30
31 #include <isc/app.h>
32 #include <isc/base64.h>
33 #include <isc/dir.h>
34 #include <isc/entropy.h>
35 #include <isc/file.h>
36 #include <isc/hash.h>
37 #include <isc/hex.h>
38 #include <isc/httpd.h>
39 #include <isc/lex.h>
40 #include <isc/parseint.h>
41 #include <isc/portset.h>
42 #include <isc/print.h>
43 #include <isc/random.h>
44 #include <isc/refcount.h>
45 #include <isc/resource.h>
46 #include <isc/sha2.h>
47 #include <isc/socket.h>
48 #include <isc/stat.h>
49 #include <isc/stats.h>
50 #include <isc/stdio.h>
51 #include <isc/string.h>
52 #include <isc/task.h>
53 #include <isc/timer.h>
54 #include <isc/util.h>
55 #include <isc/xml.h>
56
57 #ifdef AES_SIT
58 #include <isc/aes.h>
59 #else
60 #include <isc/hmacsha.h>
61 #endif
62
63 #include <isccfg/namedconf.h>
64
65 #include <bind9/check.h>
66
67 #include <dns/acache.h>
68 #include <dns/adb.h>
69 #include <dns/cache.h>
70 #include <dns/db.h>
71 #include <dns/dispatch.h>
72 #include <dns/dlz.h>
73 #include <dns/dns64.h>
74 #include <dns/forward.h>
75 #include <dns/journal.h>
76 #include <dns/keytable.h>
77 #include <dns/keyvalues.h>
78 #include <dns/lib.h>
79 #include <dns/master.h>
80 #include <dns/masterdump.h>
81 #include <dns/order.h>
82 #include <dns/peer.h>
83 #include <dns/portlist.h>
84 #include <dns/private.h>
85 #include <dns/rbt.h>
86 #include <dns/rdataclass.h>
87 #include <dns/rdatalist.h>
88 #include <dns/rdataset.h>
89 #include <dns/rdatastruct.h>
90 #include <dns/resolver.h>
91 #include <dns/rootns.h>
92 #include <dns/secalg.h>
93 #include <dns/soa.h>
94 #include <dns/stats.h>
95 #include <dns/tkey.h>
96 #include <dns/tsig.h>
97 #include <dns/view.h>
98 #include <dns/zone.h>
99 #include <dns/zt.h>
100
101 #include <dst/dst.h>
102 #include <dst/result.h>
103
104 #include <named/client.h>
105 #include <named/config.h>
106 #include <named/control.h>
107 #include <named/geoip.h>
108 #include <named/interfacemgr.h>
109 #include <named/log.h>
110 #include <named/logconf.h>
111 #include <named/lwresd.h>
112 #include <named/main.h>
113 #include <named/os.h>
114 #include <named/server.h>
115 #include <named/statschannel.h>
116 #include <named/tkeyconf.h>
117 #include <named/tsigconf.h>
118 #include <named/zoneconf.h>
119 #ifdef HAVE_LIBSCF
120 #include <named/ns_smf_globals.h>
121 #include <stdlib.h>
122 #endif
123 #ifdef HAVE_GEOIP
124 #include <named/geoip.h>
125 #endif /* HAVE_GEOIP */
126
127 #ifndef PATH_MAX
128 #define PATH_MAX 1024
129 #endif
130
131 #ifndef SIZE_MAX
132 #define SIZE_MAX ((size_t)-1)
133 #endif
134
135 #ifdef TUNE_LARGE
136 #define RESOLVER_NTASKS 523
137 #define UDPBUFFERS 32768
138 #define EXCLBUFFERS 32768
139 #else
140 #define RESOLVER_NTASKS 31
141 #define UDPBUFFERS 1000
142 #define EXCLBUFFERS 4096
143 #endif /* TUNE_LARGE */
144
145 /*%
146 * Check an operation for failure. Assumes that the function
147 * using it has a 'result' variable and a 'cleanup' label.
148 */
149 #define CHECK(op) \
150 do { result = (op); \
151 if (result != ISC_R_SUCCESS) goto cleanup; \
152 } while (/*CONSTCOND*/0)
153
154 #define TCHECK(op) \
155 do { tresult = (op); \
156 if (tresult != ISC_R_SUCCESS) { \
157 isc_buffer_clear(text); \
158 goto cleanup; \
159 } \
160 } while (0)
161
162 #define CHECKM(op, msg) \
163 do { result = (op); \
164 if (result != ISC_R_SUCCESS) { \
165 isc_log_write(ns_g_lctx, \
166 NS_LOGCATEGORY_GENERAL, \
167 NS_LOGMODULE_SERVER, \
168 ISC_LOG_ERROR, \
169 "%s: %s", msg, \
170 isc_result_totext(result)); \
171 goto cleanup; \
172 } \
173 } while (/*CONSTCOND*/0) \
174
175 #define CHECKMF(op, msg, file) \
176 do { result = (op); \
177 if (result != ISC_R_SUCCESS) { \
178 isc_log_write(ns_g_lctx, \
179 NS_LOGCATEGORY_GENERAL, \
180 NS_LOGMODULE_SERVER, \
181 ISC_LOG_ERROR, \
182 "%s '%s': %s", msg, file, \
183 isc_result_totext(result)); \
184 goto cleanup; \
185 } \
186 } while (/*CONSTCOND*/0) \
187
188 #define CHECKFATAL(op, msg) \
189 do { result = (op); \
190 if (result != ISC_R_SUCCESS) \
191 fatal(msg, result); \
192 } while (/*CONSTCOND*/0) \
193
194 /*%
195 * Maximum ADB size for views that share a cache. Use this limit to suppress
196 * the total of memory footprint, which should be the main reason for sharing
197 * a cache. Only effective when a finite max-cache-size is specified.
198 * This is currently defined to be 8MB.
199 */
200 #define MAX_ADB_SIZE_FOR_CACHESHARE 8388608U
201
202 struct ns_dispatch {
203 isc_sockaddr_t addr;
204 unsigned int dispatchgen;
205 dns_dispatch_t *dispatch;
206 ISC_LINK(struct ns_dispatch) link;
207 };
208
209 struct ns_cache {
210 dns_cache_t *cache;
211 dns_view_t *primaryview;
212 isc_boolean_t needflush;
213 isc_boolean_t adbsizeadjusted;
214 ISC_LINK(ns_cache_t) link;
215 };
216
217 struct dumpcontext {
218 isc_mem_t *mctx;
219 isc_boolean_t dumpcache;
220 isc_boolean_t dumpzones;
221 FILE *fp;
222 ISC_LIST(struct viewlistentry) viewlist;
223 struct viewlistentry *view;
224 struct zonelistentry *zone;
225 dns_dumpctx_t *mdctx;
226 dns_db_t *db;
227 dns_db_t *cache;
228 isc_task_t *task;
229 dns_dbversion_t *version;
230 };
231
232 struct viewlistentry {
233 dns_view_t *view;
234 ISC_LINK(struct viewlistentry) link;
235 ISC_LIST(struct zonelistentry) zonelist;
236 };
237
238 struct zonelistentry {
239 dns_zone_t *zone;
240 ISC_LINK(struct zonelistentry) link;
241 };
242
243 /*%
244 * Configuration context to retain for each view that allows
245 * new zones to be added at runtime.
246 */
247 struct cfg_context {
248 isc_mem_t * mctx;
249 cfg_parser_t * parser;
250 cfg_obj_t * config;
251 cfg_parser_t * nzparser;
252 cfg_obj_t * nzconfig;
253 cfg_aclconfctx_t * actx;
254 };
255
256 /*%
257 * Holds state information for the initial zone loading process.
258 * Uses the isc_refcount structure to count the number of views
259 * with pending zone loads, dereferencing as each view finishes.
260 */
261 typedef struct {
262 ns_server_t *server;
263 isc_refcount_t refs;
264 } ns_zoneload_t;
265
266 /*
267 * These zones should not leak onto the Internet.
268 */
269 const char *empty_zones[] = {
270 /* RFC 1918 */
271 "10.IN-ADDR.ARPA",
272 "16.172.IN-ADDR.ARPA",
273 "17.172.IN-ADDR.ARPA",
274 "18.172.IN-ADDR.ARPA",
275 "19.172.IN-ADDR.ARPA",
276 "20.172.IN-ADDR.ARPA",
277 "21.172.IN-ADDR.ARPA",
278 "22.172.IN-ADDR.ARPA",
279 "23.172.IN-ADDR.ARPA",
280 "24.172.IN-ADDR.ARPA",
281 "25.172.IN-ADDR.ARPA",
282 "26.172.IN-ADDR.ARPA",
283 "27.172.IN-ADDR.ARPA",
284 "28.172.IN-ADDR.ARPA",
285 "29.172.IN-ADDR.ARPA",
286 "30.172.IN-ADDR.ARPA",
287 "31.172.IN-ADDR.ARPA",
288 "168.192.IN-ADDR.ARPA",
289
290 /* RFC 6598 */
291 "64.100.IN-ADDR.ARPA",
292 "65.100.IN-ADDR.ARPA",
293 "66.100.IN-ADDR.ARPA",
294 "67.100.IN-ADDR.ARPA",
295 "68.100.IN-ADDR.ARPA",
296 "69.100.IN-ADDR.ARPA",
297 "70.100.IN-ADDR.ARPA",
298 "71.100.IN-ADDR.ARPA",
299 "72.100.IN-ADDR.ARPA",
300 "73.100.IN-ADDR.ARPA",
301 "74.100.IN-ADDR.ARPA",
302 "75.100.IN-ADDR.ARPA",
303 "76.100.IN-ADDR.ARPA",
304 "77.100.IN-ADDR.ARPA",
305 "78.100.IN-ADDR.ARPA",
306 "79.100.IN-ADDR.ARPA",
307 "80.100.IN-ADDR.ARPA",
308 "81.100.IN-ADDR.ARPA",
309 "82.100.IN-ADDR.ARPA",
310 "83.100.IN-ADDR.ARPA",
311 "84.100.IN-ADDR.ARPA",
312 "85.100.IN-ADDR.ARPA",
313 "86.100.IN-ADDR.ARPA",
314 "87.100.IN-ADDR.ARPA",
315 "88.100.IN-ADDR.ARPA",
316 "89.100.IN-ADDR.ARPA",
317 "90.100.IN-ADDR.ARPA",
318 "91.100.IN-ADDR.ARPA",
319 "92.100.IN-ADDR.ARPA",
320 "93.100.IN-ADDR.ARPA",
321 "94.100.IN-ADDR.ARPA",
322 "95.100.IN-ADDR.ARPA",
323 "96.100.IN-ADDR.ARPA",
324 "97.100.IN-ADDR.ARPA",
325 "98.100.IN-ADDR.ARPA",
326 "99.100.IN-ADDR.ARPA",
327 "100.100.IN-ADDR.ARPA",
328 "101.100.IN-ADDR.ARPA",
329 "102.100.IN-ADDR.ARPA",
330 "103.100.IN-ADDR.ARPA",
331 "104.100.IN-ADDR.ARPA",
332 "105.100.IN-ADDR.ARPA",
333 "106.100.IN-ADDR.ARPA",
334 "107.100.IN-ADDR.ARPA",
335 "108.100.IN-ADDR.ARPA",
336 "109.100.IN-ADDR.ARPA",
337 "110.100.IN-ADDR.ARPA",
338 "111.100.IN-ADDR.ARPA",
339 "112.100.IN-ADDR.ARPA",
340 "113.100.IN-ADDR.ARPA",
341 "114.100.IN-ADDR.ARPA",
342 "115.100.IN-ADDR.ARPA",
343 "116.100.IN-ADDR.ARPA",
344 "117.100.IN-ADDR.ARPA",
345 "118.100.IN-ADDR.ARPA",
346 "119.100.IN-ADDR.ARPA",
347 "120.100.IN-ADDR.ARPA",
348 "121.100.IN-ADDR.ARPA",
349 "122.100.IN-ADDR.ARPA",
350 "123.100.IN-ADDR.ARPA",
351 "124.100.IN-ADDR.ARPA",
352 "125.100.IN-ADDR.ARPA",
353 "126.100.IN-ADDR.ARPA",
354 "127.100.IN-ADDR.ARPA",
355
356 /* RFC 5735 and RFC 5737 */
357 "0.IN-ADDR.ARPA", /* THIS NETWORK */
358 "127.IN-ADDR.ARPA", /* LOOPBACK */
359 "254.169.IN-ADDR.ARPA", /* LINK LOCAL */
360 "2.0.192.IN-ADDR.ARPA", /* TEST NET */
361 "100.51.198.IN-ADDR.ARPA", /* TEST NET 2 */
362 "113.0.203.IN-ADDR.ARPA", /* TEST NET 3 */
363 "255.255.255.255.IN-ADDR.ARPA", /* BROADCAST */
364
365 /* Local IPv6 Unicast Addresses */
366 "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",
367 "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",
368 /* LOCALLY ASSIGNED LOCAL ADDRESS SCOPE */
369 "D.F.IP6.ARPA",
370 "8.E.F.IP6.ARPA", /* LINK LOCAL */
371 "9.E.F.IP6.ARPA", /* LINK LOCAL */
372 "A.E.F.IP6.ARPA", /* LINK LOCAL */
373 "B.E.F.IP6.ARPA", /* LINK LOCAL */
374
375 /* Example Prefix, RFC 3849. */
376 "8.B.D.0.1.0.0.2.IP6.ARPA",
377
378 NULL
379 };
380
381 ISC_PLATFORM_NORETURN_PRE static void
382 fatal(const char *msg, isc_result_t result) ISC_PLATFORM_NORETURN_POST;
383
384 static void
385 ns_server_reload(isc_task_t *task, isc_event_t *event);
386
387 static isc_result_t
388 ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
389 cfg_aclconfctx_t *actx, isc_mem_t *mctx,
390 isc_uint16_t family, ns_listenelt_t **target);
391 static isc_result_t
392 ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
393 cfg_aclconfctx_t *actx, isc_mem_t *mctx,
394 isc_uint16_t family, ns_listenlist_t **target);
395
396 static isc_result_t
397 configure_forward(const cfg_obj_t *config, dns_view_t *view, dns_name_t *origin,
398 const cfg_obj_t *forwarders, const cfg_obj_t *forwardtype);
399
400 static isc_result_t
401 configure_alternates(const cfg_obj_t *config, dns_view_t *view,
402 const cfg_obj_t *alternates);
403
404 static isc_result_t
405 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
406 const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
407 dns_viewlist_t *viewlist, cfg_aclconfctx_t *aclconf,
408 isc_boolean_t added, isc_boolean_t old_rpz_ok);
409
410 static isc_result_t
411 add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx);
412
413 static void
414 end_reserved_dispatches(ns_server_t *server, isc_boolean_t all);
415
416 static void
417 newzone_cfgctx_destroy(void **cfgp);
418
419 static isc_result_t
420 putstr(isc_buffer_t *b, const char *str);
421
422 static isc_result_t
423 putnull(isc_buffer_t *b);
424
425 isc_result_t
426 add_comment(FILE *fp, const char *viewname);
427
428 /*%
429 * Configure a single view ACL at '*aclp'. Get its configuration from
430 * 'vconfig' (for per-view configuration) and maybe from 'config'
431 */
432 static isc_result_t
433 configure_view_acl(const cfg_obj_t *vconfig, const cfg_obj_t *config,
434 const char *aclname, const char *acltuplename,
435 cfg_aclconfctx_t *actx, isc_mem_t *mctx, dns_acl_t **aclp)
436 {
437 isc_result_t result;
438 const cfg_obj_t *maps[3];
439 const cfg_obj_t *aclobj = NULL;
440 int i = 0;
441
442 if (*aclp != NULL)
443 dns_acl_detach(aclp);
444 if (vconfig != NULL)
445 maps[i++] = cfg_tuple_get(vconfig, "options");
446 if (config != NULL) {
447 const cfg_obj_t *options = NULL;
448 (void)cfg_map_get(config, "options", &options);
449 if (options != NULL)
450 maps[i++] = options;
451 }
452 maps[i] = NULL;
453
454 (void)ns_config_get(maps, aclname, &aclobj);
455 if (aclobj == NULL)
456 /*
457 * No value available. *aclp == NULL.
458 */
459 return (ISC_R_SUCCESS);
460
461 if (acltuplename != NULL) {
462 /*
463 * If the ACL is given in an optional tuple, retrieve it.
464 * The parser should have ensured that a valid object be
465 * returned.
466 */
467 aclobj = cfg_tuple_get(aclobj, acltuplename);
468 }
469
470 result = cfg_acl_fromconfig(aclobj, config, ns_g_lctx,
471 actx, mctx, 0, aclp);
472
473 return (result);
474 }
475
476 /*%
477 * Configure a sortlist at '*aclp'. Essentially the same as
478 * configure_view_acl() except it calls cfg_acl_fromconfig with a
479 * nest_level value of 2.
480 */
481 static isc_result_t
482 configure_view_sortlist(const cfg_obj_t *vconfig, const cfg_obj_t *config,
483 cfg_aclconfctx_t *actx, isc_mem_t *mctx,
484 dns_acl_t **aclp)
485 {
486 isc_result_t result;
487 const cfg_obj_t *maps[3];
488 const cfg_obj_t *aclobj = NULL;
489 int i = 0;
490
491 if (*aclp != NULL)
492 dns_acl_detach(aclp);
493 if (vconfig != NULL)
494 maps[i++] = cfg_tuple_get(vconfig, "options");
495 if (config != NULL) {
496 const cfg_obj_t *options = NULL;
497 (void)cfg_map_get(config, "options", &options);
498 if (options != NULL)
499 maps[i++] = options;
500 }
501 maps[i] = NULL;
502
503 (void)ns_config_get(maps, "sortlist", &aclobj);
504 if (aclobj == NULL)
505 return (ISC_R_SUCCESS);
506
507 /*
508 * Use a nest level of 3 for the "top level" of the sortlist;
509 * this means each entry in the top three levels will be stored
510 * as lists of separate, nested ACLs, rather than merged together
511 * into IP tables as is usually done with ACLs.
512 */
513 result = cfg_acl_fromconfig(aclobj, config, ns_g_lctx,
514 actx, mctx, 3, aclp);
515
516 return (result);
517 }
518
519 static isc_result_t
520 configure_view_nametable(const cfg_obj_t *vconfig, const cfg_obj_t *config,
521 const char *confname, const char *conftuplename,
522 isc_mem_t *mctx, dns_rbt_t **rbtp)
523 {
524 isc_result_t result;
525 const cfg_obj_t *maps[3];
526 const cfg_obj_t *obj = NULL;
527 const cfg_listelt_t *element;
528 int i = 0;
529 dns_fixedname_t fixed;
530 dns_name_t *name;
531 isc_buffer_t b;
532 const char *str;
533 const cfg_obj_t *nameobj;
534
535 if (*rbtp != NULL)
536 dns_rbt_destroy(rbtp);
537 if (vconfig != NULL)
538 maps[i++] = cfg_tuple_get(vconfig, "options");
539 if (config != NULL) {
540 const cfg_obj_t *options = NULL;
541 (void)cfg_map_get(config, "options", &options);
542 if (options != NULL)
543 maps[i++] = options;
544 }
545 maps[i] = NULL;
546
547 (void)ns_config_get(maps, confname, &obj);
548 if (obj == NULL)
549 /*
550 * No value available. *rbtp == NULL.
551 */
552 return (ISC_R_SUCCESS);
553
554 if (conftuplename != NULL) {
555 obj = cfg_tuple_get(obj, conftuplename);
556 if (cfg_obj_isvoid(obj))
557 return (ISC_R_SUCCESS);
558 }
559
560 result = dns_rbt_create(mctx, NULL, NULL, rbtp);
561 if (result != ISC_R_SUCCESS)
562 return (result);
563
564 dns_fixedname_init(&fixed);
565 name = dns_fixedname_name(&fixed);
566 for (element = cfg_list_first(obj);
567 element != NULL;
568 element = cfg_list_next(element)) {
569 nameobj = cfg_listelt_value(element);
570 str = cfg_obj_asstring(nameobj);
571 isc_buffer_constinit(&b, str, strlen(str));
572 isc_buffer_add(&b, strlen(str));
573 CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
574 /*
575 * We don't need the node data, but need to set dummy data to
576 * avoid a partial match with an empty node. For example, if
577 * we have foo.example.com and bar.example.com, we'd get a match
578 * for baz.example.com, which is not the expected result.
579 * We simply use (void *)1 as the dummy data.
580 */
581 result = dns_rbt_addname(*rbtp, name, (void *)1);
582 if (result != ISC_R_SUCCESS) {
583 cfg_obj_log(nameobj, ns_g_lctx, ISC_LOG_ERROR,
584 "failed to add %s for %s: %s",
585 str, confname, isc_result_totext(result));
586 goto cleanup;
587 }
588
589 }
590
591 return (result);
592
593 cleanup:
594 dns_rbt_destroy(rbtp);
595 return (result);
596
597 }
598
599 static isc_result_t
600 dstkey_fromconfig(const cfg_obj_t *vconfig, const cfg_obj_t *key,
601 isc_boolean_t managed, dst_key_t **target, isc_mem_t *mctx)
602 {
603 dns_rdataclass_t viewclass;
604 dns_rdata_dnskey_t keystruct;
605 isc_uint32_t flags, proto, alg;
606 const char *keystr, *keynamestr;
607 unsigned char keydata[4096];
608 isc_buffer_t keydatabuf;
609 unsigned char rrdata[4096];
610 isc_buffer_t rrdatabuf;
611 isc_region_t r;
612 dns_fixedname_t fkeyname;
613 dns_name_t *keyname;
614 isc_buffer_t namebuf;
615 isc_result_t result;
616 dst_key_t *dstkey = NULL;
617
618 INSIST(target != NULL && *target == NULL);
619
620 flags = cfg_obj_asuint32(cfg_tuple_get(key, "flags"));
621 proto = cfg_obj_asuint32(cfg_tuple_get(key, "protocol"));
622 alg = cfg_obj_asuint32(cfg_tuple_get(key, "algorithm"));
623 keyname = dns_fixedname_name(&fkeyname);
624 keynamestr = cfg_obj_asstring(cfg_tuple_get(key, "name"));
625
626 if (managed) {
627 const char *initmethod;
628 initmethod = cfg_obj_asstring(cfg_tuple_get(key, "init"));
629
630 if (strcasecmp(initmethod, "initial-key") != 0) {
631 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
632 "managed key '%s': "
633 "invalid initialization method '%s'",
634 keynamestr, initmethod);
635 result = ISC_R_FAILURE;
636 goto cleanup;
637 }
638 }
639
640 if (vconfig == NULL)
641 viewclass = dns_rdataclass_in;
642 else {
643 const cfg_obj_t *classobj = cfg_tuple_get(vconfig, "class");
644 CHECK(ns_config_getclass(classobj, dns_rdataclass_in,
645 &viewclass));
646 }
647 keystruct.common.rdclass = viewclass;
648 keystruct.common.rdtype = dns_rdatatype_dnskey;
649 /*
650 * The key data in keystruct is not dynamically allocated.
651 */
652 keystruct.mctx = NULL;
653
654 ISC_LINK_INIT(&keystruct.common, link);
655
656 if (flags > 0xffff)
657 CHECKM(ISC_R_RANGE, "key flags");
658 if (proto > 0xff)
659 CHECKM(ISC_R_RANGE, "key protocol");
660 if (alg > 0xff)
661 CHECKM(ISC_R_RANGE, "key algorithm");
662 keystruct.flags = (isc_uint16_t)flags;
663 keystruct.protocol = (isc_uint8_t)proto;
664 keystruct.algorithm = (isc_uint8_t)alg;
665
666 isc_buffer_init(&keydatabuf, keydata, sizeof(keydata));
667 isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
668
669 keystr = cfg_obj_asstring(cfg_tuple_get(key, "key"));
670 CHECK(isc_base64_decodestring(keystr, &keydatabuf));
671 isc_buffer_usedregion(&keydatabuf, &r);
672 keystruct.datalen = r.length;
673 keystruct.data = r.base;
674
675 if ((keystruct.algorithm == DST_ALG_RSASHA1 ||
676 keystruct.algorithm == DST_ALG_RSAMD5) &&
677 r.length > 1 && r.base[0] == 1 && r.base[1] == 3)
678 cfg_obj_log(key, ns_g_lctx, ISC_LOG_WARNING,
679 "%s key '%s' has a weak exponent",
680 managed ? "managed" : "trusted",
681 keynamestr);
682
683 CHECK(dns_rdata_fromstruct(NULL,
684 keystruct.common.rdclass,
685 keystruct.common.rdtype,
686 &keystruct, &rrdatabuf));
687 dns_fixedname_init(&fkeyname);
688 isc_buffer_constinit(&namebuf, keynamestr, strlen(keynamestr));
689 isc_buffer_add(&namebuf, strlen(keynamestr));
690 CHECK(dns_name_fromtext(keyname, &namebuf, dns_rootname, 0, NULL));
691 CHECK(dst_key_fromdns(keyname, viewclass, &rrdatabuf,
692 mctx, &dstkey));
693
694 *target = dstkey;
695 return (ISC_R_SUCCESS);
696
697 cleanup:
698 if (result == DST_R_NOCRYPTO) {
699 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
700 "ignoring %s key for '%s': no crypto support",
701 managed ? "managed" : "trusted",
702 keynamestr);
703 } else if (result == DST_R_UNSUPPORTEDALG) {
704 cfg_obj_log(key, ns_g_lctx, ISC_LOG_WARNING,
705 "skipping %s key for '%s': %s",
706 managed ? "managed" : "trusted",
707 keynamestr, isc_result_totext(result));
708 } else {
709 cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
710 "configuring %s key for '%s': %s",
711 managed ? "managed" : "trusted",
712 keynamestr, isc_result_totext(result));
713 result = ISC_R_FAILURE;
714 }
715
716 if (dstkey != NULL)
717 dst_key_free(&dstkey);
718
719 return (result);
720 }
721
722 static isc_result_t
723 load_view_keys(const cfg_obj_t *keys, const cfg_obj_t *vconfig,
724 dns_view_t *view, isc_boolean_t managed,
725 dns_name_t *keyname, isc_mem_t *mctx)
726 {
727 const cfg_listelt_t *elt, *elt2;
728 const cfg_obj_t *key, *keylist;
729 dst_key_t *dstkey = NULL;
730 isc_result_t result;
731 dns_keytable_t *secroots = NULL;
732
733 CHECK(dns_view_getsecroots(view, &secroots));
734
735 for (elt = cfg_list_first(keys);
736 elt != NULL;
737 elt = cfg_list_next(elt)) {
738 keylist = cfg_listelt_value(elt);
739
740 for (elt2 = cfg_list_first(keylist);
741 elt2 != NULL;
742 elt2 = cfg_list_next(elt2)) {
743 key = cfg_listelt_value(elt2);
744 result = dstkey_fromconfig(vconfig, key, managed,
745 &dstkey, mctx);
746 if (result == DST_R_UNSUPPORTEDALG) {
747 result = ISC_R_SUCCESS;
748 continue;
749 }
750 if (result != ISC_R_SUCCESS)
751 goto cleanup;
752
753 /*
754 * If keyname was specified, we only add that key.
755 */
756 if (keyname != NULL &&
757 !dns_name_equal(keyname, dst_key_name(dstkey)))
758 {
759 dst_key_free(&dstkey);
760 continue;
761 }
762
763 CHECK(dns_keytable_add(secroots, managed, &dstkey));
764 }
765 }
766
767 cleanup:
768 if (dstkey != NULL)
769 dst_key_free(&dstkey);
770 if (secroots != NULL)
771 dns_keytable_detach(&secroots);
772 if (result == DST_R_NOCRYPTO)
773 result = ISC_R_SUCCESS;
774 return (result);
775 }
776
777 /*%
778 * Configure DNSSEC keys for a view.
779 *
780 * The per-view configuration values and the server-global defaults are read
781 * from 'vconfig' and 'config'.
782 */
783 static isc_result_t
784 configure_view_dnsseckeys(dns_view_t *view, const cfg_obj_t *vconfig,
785 const cfg_obj_t *config, const cfg_obj_t *bindkeys,
786 isc_boolean_t auto_dlv, isc_boolean_t auto_root,
787 isc_mem_t *mctx)
788 {
789 isc_result_t result = ISC_R_SUCCESS;
790 const cfg_obj_t *view_keys = NULL;
791 const cfg_obj_t *global_keys = NULL;
792 const cfg_obj_t *view_managed_keys = NULL;
793 const cfg_obj_t *global_managed_keys = NULL;
794 const cfg_obj_t *maps[4];
795 const cfg_obj_t *voptions = NULL;
796 const cfg_obj_t *options = NULL;
797 const cfg_obj_t *obj = NULL;
798 const char *directory;
799 int i = 0;
800
801 /* We don't need trust anchors for the _bind view */
802 if (strcmp(view->name, "_bind") == 0 &&
803 view->rdclass == dns_rdataclass_chaos) {
804 return (ISC_R_SUCCESS);
805 }
806
807 if (vconfig != NULL) {
808 voptions = cfg_tuple_get(vconfig, "options");
809 if (voptions != NULL) {
810 (void) cfg_map_get(voptions, "trusted-keys",
811 &view_keys);
812 (void) cfg_map_get(voptions, "managed-keys",
813 &view_managed_keys);
814 maps[i++] = voptions;
815 }
816 }
817
818 if (config != NULL) {
819 (void)cfg_map_get(config, "trusted-keys", &global_keys);
820 (void)cfg_map_get(config, "managed-keys", &global_managed_keys);
821 (void)cfg_map_get(config, "options", &options);
822 if (options != NULL) {
823 maps[i++] = options;
824 }
825 }
826
827 maps[i++] = ns_g_defaults;
828 maps[i] = NULL;
829
830 result = dns_view_initsecroots(view, mctx);
831 if (result != ISC_R_SUCCESS) {
832 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
833 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
834 "couldn't create keytable");
835 return (ISC_R_UNEXPECTED);
836 }
837
838 if (auto_dlv && view->rdclass == dns_rdataclass_in) {
839 const cfg_obj_t *builtin_keys = NULL;
840 const cfg_obj_t *builtin_managed_keys = NULL;
841
842 isc_log_write(ns_g_lctx, DNS_LOGCATEGORY_SECURITY,
843 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
844 "using built-in DLV key for view %s",
845 view->name);
846
847 /*
848 * If bind.keys exists, it overrides the managed-keys
849 * clause hard-coded in ns_g_config.
850 */
851 if (bindkeys != NULL) {
852 (void)cfg_map_get(bindkeys, "trusted-keys",
853 &builtin_keys);
854 (void)cfg_map_get(bindkeys, "managed-keys",
855 &builtin_managed_keys);
856 } else {
857 (void)cfg_map_get(ns_g_config, "trusted-keys",
858 &builtin_keys);
859 (void)cfg_map_get(ns_g_config, "managed-keys",
860 &builtin_managed_keys);
861 }
862
863 if (builtin_keys != NULL)
864 CHECK(load_view_keys(builtin_keys, vconfig, view,
865 ISC_FALSE, view->dlv, mctx));
866 if (builtin_managed_keys != NULL)
867 CHECK(load_view_keys(builtin_managed_keys, vconfig,
868 view, ISC_TRUE, view->dlv, mctx));
869 }
870
871 if (auto_root && view->rdclass == dns_rdataclass_in) {
872 const cfg_obj_t *builtin_keys = NULL;
873 const cfg_obj_t *builtin_managed_keys = NULL;
874
875 isc_log_write(ns_g_lctx, DNS_LOGCATEGORY_SECURITY,
876 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
877 "using built-in root key for view %s",
878 view->name);
879
880 /*
881 * If bind.keys exists, it overrides the managed-keys
882 * clause hard-coded in ns_g_config.
883 */
884 if (bindkeys != NULL) {
885 (void)cfg_map_get(bindkeys, "trusted-keys",
886 &builtin_keys);
887 (void)cfg_map_get(bindkeys, "managed-keys",
888 &builtin_managed_keys);
889 } else {
890 (void)cfg_map_get(ns_g_config, "trusted-keys",
891 &builtin_keys);
892 (void)cfg_map_get(ns_g_config, "managed-keys",
893 &builtin_managed_keys);
894 }
895
896 if (builtin_keys != NULL)
897 CHECK(load_view_keys(builtin_keys, vconfig, view,
898 ISC_FALSE, dns_rootname, mctx));
899 if (builtin_managed_keys != NULL)
900 CHECK(load_view_keys(builtin_managed_keys, vconfig,
901 view, ISC_TRUE, dns_rootname,
902 mctx));
903 }
904
905 CHECK(load_view_keys(view_keys, vconfig, view, ISC_FALSE,
906 NULL, mctx));
907 CHECK(load_view_keys(view_managed_keys, vconfig, view, ISC_TRUE,
908 NULL, mctx));
909
910 if (view->rdclass == dns_rdataclass_in) {
911 CHECK(load_view_keys(global_keys, vconfig, view, ISC_FALSE,
912 NULL, mctx));
913 CHECK(load_view_keys(global_managed_keys, vconfig, view,
914 ISC_TRUE, NULL, mctx));
915 }
916
917 /*
918 * Add key zone for managed-keys.
919 */
920 obj = NULL;
921 (void)ns_config_get(maps, "managed-keys-directory", &obj);
922 directory = (obj != NULL ? cfg_obj_asstring(obj) : NULL);
923 if (directory != NULL)
924 result = isc_file_isdirectory(directory);
925 if (result != ISC_R_SUCCESS) {
926 isc_log_write(ns_g_lctx, DNS_LOGCATEGORY_SECURITY,
927 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
928 "invalid managed-keys-directory %s: %s",
929 directory, isc_result_totext(result));
930 goto cleanup;
931
932 }
933 CHECK(add_keydata_zone(view, directory, ns_g_mctx));
934
935 cleanup:
936 return (result);
937 }
938
939 static isc_result_t
940 mustbesecure(const cfg_obj_t *mbs, dns_resolver_t *resolver) {
941 const cfg_listelt_t *element;
942 const cfg_obj_t *obj;
943 const char *str;
944 dns_fixedname_t fixed;
945 dns_name_t *name;
946 isc_boolean_t value;
947 isc_result_t result;
948 isc_buffer_t b;
949
950 dns_fixedname_init(&fixed);
951 name = dns_fixedname_name(&fixed);
952 for (element = cfg_list_first(mbs);
953 element != NULL;
954 element = cfg_list_next(element))
955 {
956 obj = cfg_listelt_value(element);
957 str = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
958 isc_buffer_constinit(&b, str, strlen(str));
959 isc_buffer_add(&b, strlen(str));
960 CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
961 value = cfg_obj_asboolean(cfg_tuple_get(obj, "value"));
962 CHECK(dns_resolver_setmustbesecure(resolver, name, value));
963 }
964
965 result = ISC_R_SUCCESS;
966
967 cleanup:
968 return (result);
969 }
970
971 /*%
972 * Get a dispatch appropriate for the resolver of a given view.
973 */
974 static isc_result_t
975 get_view_querysource_dispatch(const cfg_obj_t **maps, int af,
976 dns_dispatch_t **dispatchp, isc_dscp_t *dscpp,
977 isc_boolean_t is_firstview)
978 {
979 isc_result_t result = ISC_R_FAILURE;
980 dns_dispatch_t *disp;
981 isc_sockaddr_t sa;
982 unsigned int attrs, attrmask;
983 const cfg_obj_t *obj = NULL;
984 unsigned int maxdispatchbuffers = UDPBUFFERS;
985 isc_dscp_t dscp = -1;
986
987 switch (af) {
988 case AF_INET:
989 result = ns_config_get(maps, "query-source", &obj);
990 INSIST(result == ISC_R_SUCCESS);
991 break;
992 case AF_INET6:
993 result = ns_config_get(maps, "query-source-v6", &obj);
994 INSIST(result == ISC_R_SUCCESS);
995 break;
996 default:
997 INSIST(0);
998 }
999
1000 sa = *(cfg_obj_assockaddr(obj));
1001 INSIST(isc_sockaddr_pf(&sa) == af);
1002
1003 dscp = cfg_obj_getdscp(obj);
1004 if (dscp != -1 && dscpp != NULL)
1005 *dscpp = dscp;
1006
1007 /*
1008 * If we don't support this address family, we're done!
1009 */
1010 switch (af) {
1011 case AF_INET:
1012 result = isc_net_probeipv4();
1013 break;
1014 case AF_INET6:
1015 result = isc_net_probeipv6();
1016 break;
1017 default:
1018 INSIST(0);
1019 }
1020 if (result != ISC_R_SUCCESS)
1021 return (ISC_R_SUCCESS);
1022
1023 /*
1024 * Try to find a dispatcher that we can share.
1025 */
1026 attrs = 0;
1027 attrs |= DNS_DISPATCHATTR_UDP;
1028 switch (af) {
1029 case AF_INET:
1030 attrs |= DNS_DISPATCHATTR_IPV4;
1031 break;
1032 case AF_INET6:
1033 attrs |= DNS_DISPATCHATTR_IPV6;
1034 break;
1035 }
1036 if (isc_sockaddr_getport(&sa) == 0) {
1037 attrs |= DNS_DISPATCHATTR_EXCLUSIVE;
1038 maxdispatchbuffers = EXCLBUFFERS;
1039 } else {
1040 INSIST(obj != NULL);
1041 if (is_firstview) {
1042 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_INFO,
1043 "using specific query-source port "
1044 "suppresses port randomization and can be "
1045 "insecure.");
1046 }
1047 }
1048
1049 attrmask = 0;
1050 attrmask |= DNS_DISPATCHATTR_UDP;
1051 attrmask |= DNS_DISPATCHATTR_TCP;
1052 attrmask |= DNS_DISPATCHATTR_IPV4;
1053 attrmask |= DNS_DISPATCHATTR_IPV6;
1054
1055 disp = NULL;
1056 result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
1057 ns_g_taskmgr, &sa, 4096,
1058 maxdispatchbuffers, 32768, 16411, 16433,
1059 attrs, attrmask, &disp);
1060 if (result != ISC_R_SUCCESS) {
1061 isc_sockaddr_t any;
1062 char buf[ISC_SOCKADDR_FORMATSIZE];
1063
1064 switch (af) {
1065 case AF_INET:
1066 isc_sockaddr_any(&any);
1067 break;
1068 case AF_INET6:
1069 isc_sockaddr_any6(&any);
1070 break;
1071 }
1072 if (isc_sockaddr_equal(&sa, &any))
1073 return (ISC_R_SUCCESS);
1074 isc_sockaddr_format(&sa, buf, sizeof(buf));
1075 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
1076 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
1077 "could not get query source dispatcher (%s)",
1078 buf);
1079 return (result);
1080 }
1081
1082 *dispatchp = disp;
1083
1084 return (ISC_R_SUCCESS);
1085 }
1086
1087 static isc_result_t
1088 configure_order(dns_order_t *order, const cfg_obj_t *ent) {
1089 dns_rdataclass_t rdclass;
1090 dns_rdatatype_t rdtype;
1091 const cfg_obj_t *obj;
1092 dns_fixedname_t fixed;
1093 unsigned int mode = 0;
1094 const char *str;
1095 isc_buffer_t b;
1096 isc_result_t result;
1097 isc_boolean_t addroot;
1098
1099 result = ns_config_getclass(cfg_tuple_get(ent, "class"),
1100 dns_rdataclass_any, &rdclass);
1101 if (result != ISC_R_SUCCESS)
1102 return (result);
1103
1104 result = ns_config_gettype(cfg_tuple_get(ent, "type"),
1105 dns_rdatatype_any, &rdtype);
1106 if (result != ISC_R_SUCCESS)
1107 return (result);
1108
1109 obj = cfg_tuple_get(ent, "name");
1110 if (cfg_obj_isstring(obj))
1111 str = cfg_obj_asstring(obj);
1112 else
1113 str = "*";
1114 addroot = ISC_TF(strcmp(str, "*") == 0);
1115 isc_buffer_constinit(&b, str, strlen(str));
1116 isc_buffer_add(&b, strlen(str));
1117 dns_fixedname_init(&fixed);
1118 result = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
1119 dns_rootname, 0, NULL);
1120 if (result != ISC_R_SUCCESS)
1121 return (result);
1122
1123 obj = cfg_tuple_get(ent, "ordering");
1124 INSIST(cfg_obj_isstring(obj));
1125 str = cfg_obj_asstring(obj);
1126 if (!strcasecmp(str, "fixed"))
1127 #if DNS_RDATASET_FIXED
1128 mode = DNS_RDATASETATTR_FIXEDORDER;
1129 #else
1130 mode = 0;
1131 #endif /* DNS_RDATASET_FIXED */
1132 else if (!strcasecmp(str, "random"))
1133 mode = DNS_RDATASETATTR_RANDOMIZE;
1134 else if (!strcasecmp(str, "cyclic"))
1135 mode = 0;
1136 else
1137 INSIST(0);
1138
1139 /*
1140 * "*" should match everything including the root (BIND 8 compat).
1141 * As dns_name_matcheswildcard(".", "*.") returns FALSE add a
1142 * explicit entry for "." when the name is "*".
1143 */
1144 if (addroot) {
1145 result = dns_order_add(order, dns_rootname,
1146 rdtype, rdclass, mode);
1147 if (result != ISC_R_SUCCESS)
1148 return (result);
1149 }
1150
1151 return (dns_order_add(order, dns_fixedname_name(&fixed),
1152 rdtype, rdclass, mode));
1153 }
1154
1155 static isc_result_t
1156 configure_peer(const cfg_obj_t *cpeer, isc_mem_t *mctx, dns_peer_t **peerp) {
1157 isc_netaddr_t na;
1158 dns_peer_t *peer;
1159 const cfg_obj_t *obj;
1160 const char *str;
1161 isc_result_t result;
1162 unsigned int prefixlen;
1163
1164 cfg_obj_asnetprefix(cfg_map_getname(cpeer), &na, &prefixlen);
1165
1166 peer = NULL;
1167 result = dns_peer_newprefix(mctx, &na, prefixlen, &peer);
1168 if (result != ISC_R_SUCCESS)
1169 return (result);
1170
1171 obj = NULL;
1172 (void)cfg_map_get(cpeer, "bogus", &obj);
1173 if (obj != NULL)
1174 CHECK(dns_peer_setbogus(peer, cfg_obj_asboolean(obj)));
1175
1176 obj = NULL;
1177 (void)cfg_map_get(cpeer, "provide-ixfr", &obj);
1178 if (obj != NULL)
1179 CHECK(dns_peer_setprovideixfr(peer, cfg_obj_asboolean(obj)));
1180
1181 obj = NULL;
1182 (void)cfg_map_get(cpeer, "request-ixfr", &obj);
1183 if (obj != NULL)
1184 CHECK(dns_peer_setrequestixfr(peer, cfg_obj_asboolean(obj)));
1185
1186 obj = NULL;
1187 (void)cfg_map_get(cpeer, "request-nsid", &obj);
1188 if (obj != NULL)
1189 CHECK(dns_peer_setrequestnsid(peer, cfg_obj_asboolean(obj)));
1190
1191 #ifdef ISC_PLATFORM_USESIT
1192 obj = NULL;
1193 (void)cfg_map_get(cpeer, "request-sit", &obj);
1194 if (obj != NULL)
1195 CHECK(dns_peer_setrequestsit(peer, cfg_obj_asboolean(obj)));
1196 #endif
1197
1198 obj = NULL;
1199 (void)cfg_map_get(cpeer, "edns", &obj);
1200 if (obj != NULL)
1201 CHECK(dns_peer_setsupportedns(peer, cfg_obj_asboolean(obj)));
1202
1203 obj = NULL;
1204 (void)cfg_map_get(cpeer, "edns-udp-size", &obj);
1205 if (obj != NULL) {
1206 isc_uint32_t udpsize = cfg_obj_asuint32(obj);
1207 if (udpsize < 512)
1208 udpsize = 512;
1209 if (udpsize > 4096)
1210 udpsize = 4096;
1211 CHECK(dns_peer_setudpsize(peer, (isc_uint16_t)udpsize));
1212 }
1213
1214 obj = NULL;
1215 (void)cfg_map_get(cpeer, "max-udp-size", &obj);
1216 if (obj != NULL) {
1217 isc_uint32_t udpsize = cfg_obj_asuint32(obj);
1218 if (udpsize < 512)
1219 udpsize = 512;
1220 if (udpsize > 4096)
1221 udpsize = 4096;
1222 CHECK(dns_peer_setmaxudp(peer, (isc_uint16_t)udpsize));
1223 }
1224
1225 obj = NULL;
1226 (void)cfg_map_get(cpeer, "transfers", &obj);
1227 if (obj != NULL)
1228 CHECK(dns_peer_settransfers(peer, cfg_obj_asuint32(obj)));
1229
1230 obj = NULL;
1231 (void)cfg_map_get(cpeer, "transfer-format", &obj);
1232 if (obj != NULL) {
1233 str = cfg_obj_asstring(obj);
1234 if (strcasecmp(str, "many-answers") == 0)
1235 CHECK(dns_peer_settransferformat(peer,
1236 dns_many_answers));
1237 else if (strcasecmp(str, "one-answer") == 0)
1238 CHECK(dns_peer_settransferformat(peer,
1239 dns_one_answer));
1240 else
1241 INSIST(0);
1242 }
1243
1244 obj = NULL;
1245 (void)cfg_map_get(cpeer, "keys", &obj);
1246 if (obj != NULL) {
1247 result = dns_peer_setkeybycharp(peer, cfg_obj_asstring(obj));
1248 if (result != ISC_R_SUCCESS)
1249 goto cleanup;
1250 }
1251
1252 obj = NULL;
1253 if (na.family == AF_INET)
1254 (void)cfg_map_get(cpeer, "transfer-source", &obj);
1255 else
1256 (void)cfg_map_get(cpeer, "transfer-source-v6", &obj);
1257 if (obj != NULL) {
1258 result = dns_peer_settransfersource(peer,
1259 cfg_obj_assockaddr(obj));
1260 if (result != ISC_R_SUCCESS)
1261 goto cleanup;
1262 result = dns_peer_settransferdscp(peer, cfg_obj_getdscp(obj));
1263 if (result != ISC_R_SUCCESS)
1264 goto cleanup;
1265 ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
1266 }
1267
1268 obj = NULL;
1269 if (na.family == AF_INET)
1270 (void)cfg_map_get(cpeer, "notify-source", &obj);
1271 else
1272 (void)cfg_map_get(cpeer, "notify-source-v6", &obj);
1273 if (obj != NULL) {
1274 result = dns_peer_setnotifysource(peer,
1275 cfg_obj_assockaddr(obj));
1276 if (result != ISC_R_SUCCESS)
1277 goto cleanup;
1278 result = dns_peer_setnotifydscp(peer, cfg_obj_getdscp(obj));
1279 if (result != ISC_R_SUCCESS)
1280 goto cleanup;
1281 ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
1282 }
1283
1284 obj = NULL;
1285 if (na.family == AF_INET)
1286 (void)cfg_map_get(cpeer, "query-source", &obj);
1287 else
1288 (void)cfg_map_get(cpeer, "query-source-v6", &obj);
1289 if (obj != NULL) {
1290 result = dns_peer_setquerysource(peer,
1291 cfg_obj_assockaddr(obj));
1292 if (result != ISC_R_SUCCESS)
1293 goto cleanup;
1294 result = dns_peer_setquerydscp(peer, cfg_obj_getdscp(obj));
1295 if (result != ISC_R_SUCCESS)
1296 goto cleanup;
1297 ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
1298 }
1299
1300 *peerp = peer;
1301 return (ISC_R_SUCCESS);
1302
1303 cleanup:
1304 dns_peer_detach(&peer);
1305 return (result);
1306 }
1307
1308 static isc_result_t
1309 disable_algorithms(const cfg_obj_t *disabled, dns_resolver_t *resolver) {
1310 isc_result_t result;
1311 const cfg_obj_t *algorithms;
1312 const cfg_listelt_t *element;
1313 const char *str;
1314 dns_fixedname_t fixed;
1315 dns_name_t *name;
1316 isc_buffer_t b;
1317
1318 dns_fixedname_init(&fixed);
1319 name = dns_fixedname_name(&fixed);
1320 str = cfg_obj_asstring(cfg_tuple_get(disabled, "name"));
1321 isc_buffer_constinit(&b, str, strlen(str));
1322 isc_buffer_add(&b, strlen(str));
1323 CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
1324
1325 algorithms = cfg_tuple_get(disabled, "algorithms");
1326 for (element = cfg_list_first(algorithms);
1327 element != NULL;
1328 element = cfg_list_next(element))
1329 {
1330 isc_textregion_t r;
1331 dns_secalg_t alg;
1332
1333 DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base);
1334 r.length = strlen(r.base);
1335
1336 result = dns_secalg_fromtext(&alg, &r);
1337 if (result != ISC_R_SUCCESS) {
1338 isc_uint8_t ui;
1339 result = isc_parse_uint8(&ui, r.base, 10);
1340 alg = ui;
1341 }
1342 if (result != ISC_R_SUCCESS) {
1343 cfg_obj_log(cfg_listelt_value(element),
1344 ns_g_lctx, ISC_LOG_ERROR,
1345 "invalid algorithm");
1346 CHECK(result);
1347 }
1348 CHECK(dns_resolver_disable_algorithm(resolver, name, alg));
1349 }
1350 cleanup:
1351 return (result);
1352 }
1353
1354 static isc_result_t
1355 disable_ds_digests(const cfg_obj_t *disabled, dns_resolver_t *resolver) {
1356 isc_result_t result;
1357 const cfg_obj_t *digests;
1358 const cfg_listelt_t *element;
1359 const char *str;
1360 dns_fixedname_t fixed;
1361 dns_name_t *name;
1362 isc_buffer_t b;
1363
1364 dns_fixedname_init(&fixed);
1365 name = dns_fixedname_name(&fixed);
1366 str = cfg_obj_asstring(cfg_tuple_get(disabled, "name"));
1367 isc_buffer_constinit(&b, str, strlen(str));
1368 isc_buffer_add(&b, strlen(str));
1369 CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
1370
1371 digests = cfg_tuple_get(disabled, "digests");
1372 for (element = cfg_list_first(digests);
1373 element != NULL;
1374 element = cfg_list_next(element))
1375 {
1376 isc_textregion_t r;
1377 dns_dsdigest_t digest;
1378
1379 DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base);
1380 r.length = strlen(r.base);
1381
1382 /* disable_ds_digests handles numeric values. */
1383 result = dns_dsdigest_fromtext(&digest, &r);
1384 if (result != ISC_R_SUCCESS) {
1385 cfg_obj_log(cfg_listelt_value(element),
1386 ns_g_lctx, ISC_LOG_ERROR,
1387 "invalid algorithm");
1388 CHECK(result);
1389 }
1390 CHECK(dns_resolver_disable_ds_digest(resolver, name, digest));
1391 }
1392 cleanup:
1393 return (result);
1394 }
1395
1396 static isc_boolean_t
1397 on_disable_list(const cfg_obj_t *disablelist, dns_name_t *zonename) {
1398 const cfg_listelt_t *element;
1399 dns_fixedname_t fixed;
1400 dns_name_t *name;
1401 isc_result_t result;
1402 const cfg_obj_t *value;
1403 const char *str;
1404 isc_buffer_t b;
1405
1406 dns_fixedname_init(&fixed);
1407 name = dns_fixedname_name(&fixed);
1408
1409 for (element = cfg_list_first(disablelist);
1410 element != NULL;
1411 element = cfg_list_next(element))
1412 {
1413 value = cfg_listelt_value(element);
1414 str = cfg_obj_asstring(value);
1415 isc_buffer_constinit(&b, str, strlen(str));
1416 isc_buffer_add(&b, strlen(str));
1417 result = dns_name_fromtext(name, &b, dns_rootname,
1418 0, NULL);
1419 RUNTIME_CHECK(result == ISC_R_SUCCESS);
1420 if (dns_name_equal(name, zonename))
1421 return (ISC_TRUE);
1422 }
1423 return (ISC_FALSE);
1424 }
1425
1426 static isc_result_t
1427 check_dbtype(dns_zone_t *zone, unsigned int dbtypec, const char **dbargv,
1428 isc_mem_t *mctx)
1429 {
1430 char **argv = NULL;
1431 unsigned int i;
1432 isc_result_t result = ISC_R_SUCCESS;
1433
1434 CHECK(dns_zone_getdbtype(zone, &argv, mctx));
1435
1436 /*
1437 * Check that all the arguments match.
1438 */
1439 for (i = 0; i < dbtypec; i++)
1440 if (argv[i] == NULL || strcmp(argv[i], dbargv[i]) != 0)
1441 CHECK(ISC_R_FAILURE);
1442
1443 /*
1444 * Check that there are not extra arguments.
1445 */
1446 if (i == dbtypec && argv[i] != NULL)
1447 result = ISC_R_FAILURE;
1448
1449 cleanup:
1450 isc_mem_free(mctx, argv);
1451 return (result);
1452 }
1453
1454 static isc_result_t
1455 setquerystats(dns_zone_t *zone, isc_mem_t *mctx, dns_zonestat_level_t level) {
1456 isc_result_t result;
1457 isc_stats_t *zoneqrystats;
1458
1459 dns_zone_setstatlevel(zone, level);
1460
1461 zoneqrystats = NULL;
1462 if (level == dns_zonestat_full) {
1463 result = isc_stats_create(mctx, &zoneqrystats,
1464 dns_nsstatscounter_max);
1465 if (result != ISC_R_SUCCESS)
1466 return (result);
1467 }
1468 dns_zone_setrequeststats(zone, zoneqrystats);
1469 if (zoneqrystats != NULL)
1470 isc_stats_detach(&zoneqrystats);
1471
1472 return (ISC_R_SUCCESS);
1473 }
1474
1475 static ns_cache_t *
1476 cachelist_find(ns_cachelist_t *cachelist, const char *cachename) {
1477 ns_cache_t *nsc;
1478
1479 for (nsc = ISC_LIST_HEAD(*cachelist);
1480 nsc != NULL;
1481 nsc = ISC_LIST_NEXT(nsc, link)) {
1482 if (strcmp(dns_cache_getname(nsc->cache), cachename) == 0)
1483 return (nsc);
1484 }
1485
1486 return (NULL);
1487 }
1488
1489 static isc_boolean_t
1490 cache_reusable(dns_view_t *originview, dns_view_t *view,
1491 isc_boolean_t new_zero_no_soattl)
1492 {
1493 if (originview->checknames != view->checknames ||
1494 dns_resolver_getzeronosoattl(originview->resolver) !=
1495 new_zero_no_soattl ||
1496 originview->acceptexpired != view->acceptexpired ||
1497 originview->enablevalidation != view->enablevalidation ||
1498 originview->maxcachettl != view->maxcachettl ||
1499 originview->maxncachettl != view->maxncachettl) {
1500 return (ISC_FALSE);
1501 }
1502
1503 return (ISC_TRUE);
1504 }
1505
1506 static isc_boolean_t
1507 cache_sharable(dns_view_t *originview, dns_view_t *view,
1508 isc_boolean_t new_zero_no_soattl,
1509 unsigned int new_cleaning_interval,
1510 isc_uint64_t new_max_cache_size)
1511 {
1512 /*
1513 * If the cache cannot even reused for the same view, it cannot be
1514 * shared with other views.
1515 */
1516 if (!cache_reusable(originview, view, new_zero_no_soattl))
1517 return (ISC_FALSE);
1518
1519 /*
1520 * Check other cache related parameters that must be consistent among
1521 * the sharing views.
1522 */
1523 if (dns_cache_getcleaninginterval(originview->cache) !=
1524 new_cleaning_interval ||
1525 dns_cache_getcachesize(originview->cache) != new_max_cache_size) {
1526 return (ISC_FALSE);
1527 }
1528
1529 return (ISC_TRUE);
1530 }
1531
1532 /*
1533 * Callback from DLZ configure when the driver sets up a writeable zone
1534 */
1535 static isc_result_t
1536 dlzconfigure_callback(dns_view_t *view, dns_dlzdb_t *dlzdb, dns_zone_t *zone) {
1537 dns_name_t *origin = dns_zone_getorigin(zone);
1538 dns_rdataclass_t zclass = view->rdclass;
1539 isc_result_t result;
1540
1541 result = dns_zonemgr_managezone(ns_g_server->zonemgr, zone);
1542 if (result != ISC_R_SUCCESS)
1543 return (result);
1544 dns_zone_setstats(zone, ns_g_server->zonestats);
1545
1546 return (ns_zone_configure_writeable_dlz(dlzdb, zone, zclass, origin));
1547 }
1548
1549 static isc_result_t
1550 dns64_reverse(dns_view_t *view, isc_mem_t *mctx, isc_netaddr_t *na,
1551 unsigned int prefixlen, const char *server,
1552 const char *contact)
1553 {
1554 char *cp;
1555 char reverse[48+sizeof("ip6.arpa.")];
1556 const char *dns64_dbtype[4] = { "_dns64", "dns64", ".", "." };
1557 const char *sep = ": view ";
1558 const char *viewname = view->name;
1559 const unsigned char *s6;
1560 dns_fixedname_t fixed;
1561 dns_name_t *name;
1562 dns_zone_t *zone = NULL;
1563 int dns64_dbtypec = 4;
1564 isc_buffer_t b;
1565 isc_result_t result;
1566
1567 REQUIRE(prefixlen == 32 || prefixlen == 40 || prefixlen == 48 ||
1568 prefixlen == 56 || prefixlen == 64 || prefixlen == 96);
1569
1570 if (!strcmp(viewname, "_default")) {
1571 sep = "";
1572 viewname = "";
1573 }
1574
1575 /*
1576 * Construct the reverse name of the zone.
1577 */
1578 cp = reverse;
1579 s6 = na->type.in6.s6_addr;
1580 while (prefixlen > 0) {
1581 prefixlen -= 8;
1582 sprintf(cp, "%x.%x.", s6[prefixlen/8] & 0xf,
1583 (s6[prefixlen/8] >> 4) & 0xf);
1584 cp += 4;
1585 }
1586 strcat(cp, "ip6.arpa.");
1587
1588 /*
1589 * Create the actual zone.
1590 */
1591 if (server != NULL)
1592 dns64_dbtype[2] = server;
1593 if (contact != NULL)
1594 dns64_dbtype[3] = contact;
1595 dns_fixedname_init(&fixed);
1596 name = dns_fixedname_name(&fixed);
1597 isc_buffer_constinit(&b, reverse, strlen(reverse));
1598 isc_buffer_add(&b, strlen(reverse));
1599 CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
1600 CHECK(dns_zone_create(&zone, mctx));
1601 CHECK(dns_zone_setorigin(zone, name));
1602 dns_zone_setview(zone, view);
1603 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
1604 dns_zone_setclass(zone, view->rdclass);
1605 dns_zone_settype(zone, dns_zone_master);
1606 dns_zone_setstats(zone, ns_g_server->zonestats);
1607 CHECK(dns_zone_setdbtype(zone, dns64_dbtypec, dns64_dbtype));
1608 if (view->queryacl != NULL)
1609 dns_zone_setqueryacl(zone, view->queryacl);
1610 if (view->queryonacl != NULL)
1611 dns_zone_setqueryonacl(zone, view->queryonacl);
1612 dns_zone_setdialup(zone, dns_dialuptype_no);
1613 dns_zone_setnotifytype(zone, dns_notifytype_no);
1614 dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, ISC_TRUE);
1615 CHECK(setquerystats(zone, mctx, dns_zonestat_none)); /* XXXMPA */
1616 CHECK(dns_view_addzone(view, zone));
1617 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
1618 ISC_LOG_INFO, "dns64 reverse zone%s%s: %s", sep,
1619 viewname, reverse);
1620
1621 cleanup:
1622 if (zone != NULL)
1623 dns_zone_detach(&zone);
1624 return (result);
1625 }
1626
1627 static isc_result_t
1628 configure_rpz_name(dns_view_t *view, const cfg_obj_t *obj, dns_name_t *name,
1629 const char *str, const char *msg)
1630 {
1631 isc_result_t result;
1632
1633 result = dns_name_fromstring(name, str, DNS_NAME_DOWNCASE, view->mctx);
1634 if (result != ISC_R_SUCCESS)
1635 cfg_obj_log(obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
1636 "invalid %s '%s'", msg, str);
1637 return (result);
1638 }
1639
1640 static isc_result_t
1641 configure_rpz_name2(dns_view_t *view, const cfg_obj_t *obj, dns_name_t *name,
1642 const char *str, const dns_name_t *origin)
1643 {
1644 isc_result_t result;
1645
1646 result = dns_name_fromstring2(name, str, origin, DNS_NAME_DOWNCASE,
1647 view->mctx);
1648 if (result != ISC_R_SUCCESS)
1649 cfg_obj_log(obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
1650 "invalid zone '%s'", str);
1651 return (result);
1652 }
1653
1654 static isc_result_t
1655 configure_rpz_zone(dns_view_t *view, const cfg_listelt_t *element,
1656 isc_boolean_t recursive_only_def, dns_ttl_t ttl_def,
1657 const dns_rpz_zone_t *old, isc_boolean_t *old_rpz_okp)
1658 {
1659 const cfg_obj_t *rpz_obj, *obj;
1660 const char *str;
1661 dns_rpz_zone_t *new;
1662 isc_result_t result;
1663 dns_rpz_num_t rpz_num;
1664
1665 REQUIRE(old != NULL || !*old_rpz_okp);
1666
1667 rpz_obj = cfg_listelt_value(element);
1668
1669 if (view->rpzs->p.num_zones >= DNS_RPZ_MAX_ZONES) {
1670 cfg_obj_log(rpz_obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
1671 "limit of %d response policy zones exceeded",
1672 DNS_RPZ_MAX_ZONES);
1673 return (ISC_R_FAILURE);
1674 }
1675
1676 new = isc_mem_get(view->rpzs->mctx, sizeof(*new));
1677 if (new == NULL) {
1678 cfg_obj_log(rpz_obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
1679 "no memory for response policy zones");
1680 return (ISC_R_NOMEMORY);
1681 }
1682
1683 memset(new, 0, sizeof(*new));
1684 result = isc_refcount_init(&new->refs, 1);
1685 if (result != ISC_R_SUCCESS) {
1686 isc_mem_put(view->rpzs->mctx, new, sizeof(*new));
1687 return (result);
1688 }
1689 dns_name_init(&new->origin, NULL);
1690 dns_name_init(&new->client_ip, NULL);
1691 dns_name_init(&new->ip, NULL);
1692 dns_name_init(&new->nsdname, NULL);
1693 dns_name_init(&new->nsip, NULL);
1694 dns_name_init(&new->passthru, NULL);
1695 dns_name_init(&new->drop, NULL);
1696 dns_name_init(&new->tcp_only, NULL);
1697 dns_name_init(&new->cname, NULL);
1698 new->num = view->rpzs->p.num_zones++;
1699 view->rpzs->zones[new->num] = new;
1700
1701 obj = cfg_tuple_get(rpz_obj, "recursive-only");
1702 if (cfg_obj_isvoid(obj) ? recursive_only_def : cfg_obj_asboolean(obj)) {
1703 view->rpzs->p.no_rd_ok &= ~DNS_RPZ_ZBIT(new->num);
1704 } else {
1705 view->rpzs->p.no_rd_ok |= DNS_RPZ_ZBIT(new->num);
1706 }
1707
1708 obj = cfg_tuple_get(rpz_obj, "max-policy-ttl");
1709 if (cfg_obj_isuint32(obj)) {
1710 new->max_policy_ttl = cfg_obj_asuint32(obj);
1711 } else {
1712 new->max_policy_ttl = ttl_def;
1713 }
1714 if (*old_rpz_okp && new->max_policy_ttl != old->max_policy_ttl)
1715 *old_rpz_okp = ISC_FALSE;
1716
1717 str = cfg_obj_asstring(cfg_tuple_get(rpz_obj, "zone name"));
1718 result = configure_rpz_name(view, rpz_obj, &new->origin, str, "zone");
1719 if (result != ISC_R_SUCCESS)
1720 return (result);
1721 if (dns_name_equal(&new->origin, dns_rootname)) {
1722 cfg_obj_log(rpz_obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
1723 "invalid zone name '%s'", str);
1724 return (DNS_R_EMPTYLABEL);
1725 }
1726 for (rpz_num = 0; rpz_num < view->rpzs->p.num_zones-1; ++rpz_num) {
1727 if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin,
1728 &new->origin)) {
1729 cfg_obj_log(rpz_obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
1730 "duplicate '%s'", str);
1731 result = DNS_R_DUPLICATE;
1732 return (result);
1733 }
1734 }
1735 if (*old_rpz_okp && !dns_name_equal(&old->origin, &new->origin))
1736 *old_rpz_okp = ISC_FALSE;
1737
1738 result = configure_rpz_name2(view, rpz_obj, &new->client_ip,
1739 DNS_RPZ_CLIENT_IP_ZONE, &new->origin);
1740 if (result != ISC_R_SUCCESS)
1741 return (result);
1742
1743 result = configure_rpz_name2(view, rpz_obj, &new->ip,
1744 DNS_RPZ_IP_ZONE, &new->origin);
1745 if (result != ISC_R_SUCCESS)
1746 return (result);
1747
1748 result = configure_rpz_name2(view, rpz_obj, &new->nsdname,
1749 DNS_RPZ_NSDNAME_ZONE, &new->origin);
1750 if (result != ISC_R_SUCCESS)
1751 return (result);
1752
1753 result = configure_rpz_name2(view, rpz_obj, &new->nsip,
1754 DNS_RPZ_NSIP_ZONE, &new->origin);
1755 if (result != ISC_R_SUCCESS)
1756 return (result);
1757
1758 result = configure_rpz_name(view, rpz_obj, &new->passthru,
1759 DNS_RPZ_PASSTHRU_NAME, "name");
1760 if (result != ISC_R_SUCCESS)
1761 return (result);
1762
1763 result = configure_rpz_name(view, rpz_obj, &new->drop,
1764 DNS_RPZ_DROP_NAME, "name");
1765 if (result != ISC_R_SUCCESS)
1766 return (result);
1767
1768 result = configure_rpz_name(view, rpz_obj, &new->tcp_only,
1769 DNS_RPZ_TCP_ONLY_NAME, "name");
1770 if (result != ISC_R_SUCCESS)
1771 return (result);
1772
1773 obj = cfg_tuple_get(rpz_obj, "policy");
1774 if (cfg_obj_isvoid(obj)) {
1775 new->policy = DNS_RPZ_POLICY_GIVEN;
1776 } else {
1777 str = cfg_obj_asstring(cfg_tuple_get(obj, "policy name"));
1778 new->policy = dns_rpz_str2policy(str);
1779 INSIST(new->policy != DNS_RPZ_POLICY_ERROR);
1780 if (new->policy == DNS_RPZ_POLICY_CNAME) {
1781 str = cfg_obj_asstring(cfg_tuple_get(obj, "cname"));
1782 result = configure_rpz_name(view, rpz_obj, &new->cname,
1783 str, "cname");
1784 if (result != ISC_R_SUCCESS)
1785 return (result);
1786 }
1787 }
1788 if (*old_rpz_okp && (new->policy != old->policy ||
1789 !dns_name_equal(&old->cname, &new->cname)))
1790 *old_rpz_okp = ISC_FALSE;
1791
1792 return (ISC_R_SUCCESS);
1793 }
1794
1795 static isc_result_t
1796 configure_rpz(dns_view_t *view, const cfg_obj_t *rpz_obj,
1797 isc_boolean_t *old_rpz_okp)
1798 {
1799 const cfg_listelt_t *zone_element;
1800 const cfg_obj_t *sub_obj;
1801 isc_boolean_t recursive_only_def;
1802 dns_ttl_t ttl_def;
1803 dns_rpz_zones_t *new;
1804 const dns_rpz_zones_t *old;
1805 dns_view_t *pview;
1806 const dns_rpz_zone_t *old_zone;
1807 isc_result_t result;
1808 int i;
1809
1810 *old_rpz_okp = ISC_FALSE;
1811
1812 zone_element = cfg_list_first(cfg_tuple_get(rpz_obj, "zone list"));
1813 if (zone_element == NULL)
1814 return (ISC_R_SUCCESS);
1815
1816 result = dns_rpz_new_zones(&view->rpzs, view->mctx);
1817 if (result != ISC_R_SUCCESS)
1818 return (result);
1819 new = view->rpzs;
1820
1821 sub_obj = cfg_tuple_get(rpz_obj, "recursive-only");
1822 if (!cfg_obj_isvoid(sub_obj) &&
1823 !cfg_obj_asboolean(sub_obj))
1824 recursive_only_def = ISC_FALSE;
1825 else
1826 recursive_only_def = ISC_TRUE;
1827
1828 sub_obj = cfg_tuple_get(rpz_obj, "break-dnssec");
1829 if (!cfg_obj_isvoid(sub_obj) &&
1830 cfg_obj_asboolean(sub_obj))
1831 new->p.break_dnssec = ISC_TRUE;
1832 else
1833 new->p.break_dnssec = ISC_FALSE;
1834
1835 sub_obj = cfg_tuple_get(rpz_obj, "max-policy-ttl");
1836 if (cfg_obj_isuint32(sub_obj))
1837 ttl_def = cfg_obj_asuint32(sub_obj);
1838 else
1839 ttl_def = DNS_RPZ_MAX_TTL_DEFAULT;
1840
1841 sub_obj = cfg_tuple_get(rpz_obj, "min-ns-dots");
1842 if (cfg_obj_isuint32(sub_obj))
1843 new->p.min_ns_labels = cfg_obj_asuint32(sub_obj) + 1;
1844 else
1845 new->p.min_ns_labels = 2;
1846
1847 sub_obj = cfg_tuple_get(rpz_obj, "qname-wait-recurse");
1848 if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj))
1849 new->p.qname_wait_recurse = ISC_TRUE;
1850 else
1851 new->p.qname_wait_recurse = ISC_FALSE;
1852
1853 pview = NULL;
1854 result = dns_viewlist_find(&ns_g_server->viewlist,
1855 view->name, view->rdclass, &pview);
1856 if (result == ISC_R_SUCCESS) {
1857 old = pview->rpzs;
1858 } else {
1859 old = NULL;
1860 }
1861 if (old == NULL)
1862 *old_rpz_okp = ISC_FALSE;
1863 else
1864 *old_rpz_okp = ISC_TRUE;
1865
1866 for (i = 0;
1867 zone_element != NULL;
1868 ++i, zone_element = cfg_list_next(zone_element)) {
1869 INSIST(old != NULL || !*old_rpz_okp);
1870 if (*old_rpz_okp && i < old->p.num_zones) {
1871 old_zone = old->zones[i];
1872 } else {
1873 *old_rpz_okp = ISC_FALSE;
1874 old_zone = NULL;
1875 }
1876 result = configure_rpz_zone(view, zone_element,
1877 recursive_only_def, ttl_def,
1878 old_zone, old_rpz_okp);
1879 if (result != ISC_R_SUCCESS) {
1880 if (pview != NULL)
1881 dns_view_detach(&pview);
1882 return (result);
1883 }
1884 }
1885
1886 /*
1887 * If this is a reloading and the parameters and list of policy
1888 * zones are unchanged, then use the same policy data.
1889 * Data for individual zones that must be reloaded will be merged.
1890 */
1891 if (old != NULL && memcmp(&old->p, &new->p, sizeof(new->p)) != 0)
1892 *old_rpz_okp = ISC_FALSE;
1893 if (*old_rpz_okp) {
1894 dns_rpz_detach_rpzs(&view->rpzs);
1895 dns_rpz_attach_rpzs(pview->rpzs, &view->rpzs);
1896 } else if (old != NULL && pview != NULL) {
1897 pview->rpzs->rpz_ver += 1;
1898 view->rpzs->rpz_ver = pview->rpzs->rpz_ver;
1899 cfg_obj_log(rpz_obj, ns_g_lctx, ISC_LOG_DEBUG(1),
1900 "updated RPZ policy: version %d",
1901 view->rpzs->rpz_ver);
1902 }
1903 if (pview != NULL)
1904 dns_view_detach(&pview);
1905
1906 return (ISC_R_SUCCESS);
1907 }
1908
1909 #define CHECK_RRL(cond, pat, val1, val2) \
1910 do { \
1911 if (!(cond)) { \
1912 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR, \
1913 pat, val1, val2); \
1914 result = ISC_R_RANGE; \
1915 goto cleanup; \
1916 } \
1917 } while (/*CONSTCOND*/0)
1918
1919 #define CHECK_RRL_RATE(rate, def, max_rate, name) \
1920 do { \
1921 obj = NULL; \
1922 rrl->rate.str = name; \
1923 result = cfg_map_get(map, name, &obj); \
1924 if (result == ISC_R_SUCCESS) { \
1925 rrl->rate.r = cfg_obj_asuint32(obj); \
1926 CHECK_RRL(rrl->rate.r <= max_rate, \
1927 name" %d > %d", \
1928 rrl->rate.r, max_rate); \
1929 } else { \
1930 rrl->rate.r = def; \
1931 } \
1932 rrl->rate.scaled = rrl->rate.r; \
1933 } while (/*CONSTCOND*/0)
1934
1935 static isc_result_t
1936 configure_rrl(dns_view_t *view, const cfg_obj_t *config, const cfg_obj_t *map) {
1937 const cfg_obj_t *obj;
1938 dns_rrl_t *rrl;
1939 isc_result_t result;
1940 int min_entries, i, j;
1941
1942 /*
1943 * Most DNS servers have few clients, but intentinally open
1944 * recursive and authoritative servers often have many.
1945 * So start with a small number of entries unless told otherwise
1946 * to reduce cold-start costs.
1947 */
1948 min_entries = 500;
1949 obj = NULL;
1950 result = cfg_map_get(map, "min-table-size", &obj);
1951 if (result == ISC_R_SUCCESS) {
1952 min_entries = cfg_obj_asuint32(obj);
1953 if (min_entries < 1)
1954 min_entries = 1;
1955 }
1956 result = dns_rrl_init(&rrl, view, min_entries);
1957 if (result != ISC_R_SUCCESS)
1958 return (result);
1959
1960 i = ISC_MAX(20000, min_entries);
1961 obj = NULL;
1962 result = cfg_map_get(map, "max-table-size", &obj);
1963 if (result == ISC_R_SUCCESS) {
1964 i = cfg_obj_asuint32(obj);
1965 CHECK_RRL(i >= min_entries,
1966 "max-table-size %d < min-table-size %d",
1967 i, min_entries);
1968 }
1969 rrl->max_entries = i;
1970
1971 CHECK_RRL_RATE(responses_per_second, 0, DNS_RRL_MAX_RATE,
1972 "responses-per-second");
1973 CHECK_RRL_RATE(referrals_per_second,
1974 rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
1975 "referrals-per-second");
1976 CHECK_RRL_RATE(nodata_per_second,
1977 rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
1978 "nodata-per-second");
1979 CHECK_RRL_RATE(nxdomains_per_second,
1980 rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
1981 "nxdomains-per-second");
1982 CHECK_RRL_RATE(errors_per_second,
1983 rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
1984 "errors-per-second");
1985
1986 CHECK_RRL_RATE(all_per_second, 0, DNS_RRL_MAX_RATE,
1987 "all-per-second");
1988
1989 CHECK_RRL_RATE(slip, 2, DNS_RRL_MAX_SLIP,
1990 "slip");
1991
1992 i = 15;
1993 obj = NULL;
1994 result = cfg_map_get(map, "window", &obj);
1995 if (result == ISC_R_SUCCESS) {
1996 i = cfg_obj_asuint32(obj);
1997 CHECK_RRL(i >= 1 && i <= DNS_RRL_MAX_WINDOW,
1998 "window %d < 1 or > %d", i, DNS_RRL_MAX_WINDOW);
1999 }
2000 rrl->window = i;
2001
2002 i = 0;
2003 obj = NULL;
2004 result = cfg_map_get(map, "qps-scale", &obj);
2005 if (result == ISC_R_SUCCESS) {
2006 i = cfg_obj_asuint32(obj);
2007 CHECK_RRL(i >= 1, "invalid 'qps-scale %d'%s", i, "");
2008 }
2009 rrl->qps_scale = i;
2010 rrl->qps = 1.0;
2011
2012 i = 24;
2013 obj = NULL;
2014 result = cfg_map_get(map, "ipv4-prefix-length", &obj);
2015 if (result == ISC_R_SUCCESS) {
2016 i = cfg_obj_asuint32(obj);
2017 CHECK_RRL(i >= 8 && i <= 32,
2018 "invalid 'ipv4-prefix-length %d'%s", i, "");
2019 }
2020 rrl->ipv4_prefixlen = i;
2021 if (i == 32)
2022 rrl->ipv4_mask = 0xffffffff;
2023 else
2024 rrl->ipv4_mask = htonl(0xffffffff << (32-i));
2025
2026 i = 56;
2027 obj = NULL;
2028 result = cfg_map_get(map, "ipv6-prefix-length", &obj);
2029 if (result == ISC_R_SUCCESS) {
2030 i = cfg_obj_asuint32(obj);
2031 CHECK_RRL(i >= 16 && i <= DNS_RRL_MAX_PREFIX,
2032 "ipv6-prefix-length %d < 16 or > %d",
2033 i, DNS_RRL_MAX_PREFIX);
2034 }
2035 rrl->ipv6_prefixlen = i;
2036 for (j = 0; j < 4; ++j) {
2037 if (i <= 0) {
2038 rrl->ipv6_mask[j] = 0;
2039 } else if (i < 32) {
2040 rrl->ipv6_mask[j] = htonl(0xffffffff << (32-i));
2041 } else {
2042 rrl->ipv6_mask[j] = 0xffffffff;
2043 }
2044 i -= 32;
2045 }
2046
2047 obj = NULL;
2048 result = cfg_map_get(map, "exempt-clients", &obj);
2049 if (result == ISC_R_SUCCESS) {
2050 result = cfg_acl_fromconfig(obj, config, ns_g_lctx,
2051 ns_g_aclconfctx, ns_g_mctx,
2052 0, &rrl->exempt);
2053 CHECK_RRL(result == ISC_R_SUCCESS,
2054 "invalid %s%s", "address match list", "");
2055 }
2056
2057 obj = NULL;
2058 result = cfg_map_get(map, "log-only", &obj);
2059 if (result == ISC_R_SUCCESS && cfg_obj_asboolean(obj))
2060 rrl->log_only = ISC_TRUE;
2061 else
2062 rrl->log_only = ISC_FALSE;
2063
2064 return (ISC_R_SUCCESS);
2065
2066 cleanup:
2067 dns_rrl_view_destroy(view);
2068 return (result);
2069 }
2070
2071 static isc_result_t
2072 add_soa(dns_db_t *db, dns_dbversion_t *version, dns_name_t *name,
2073 dns_name_t *origin, dns_name_t *contact)
2074 {
2075 dns_dbnode_t *node = NULL;
2076 dns_rdata_t rdata = DNS_RDATA_INIT;
2077 dns_rdatalist_t rdatalist;
2078 dns_rdataset_t rdataset;
2079 isc_result_t result;
2080 unsigned char buf[DNS_SOA_BUFFERSIZE];
2081
2082 dns_rdataset_init(&rdataset);
2083 dns_rdatalist_init(&rdatalist);
2084 CHECK(dns_soa_buildrdata(origin, contact, dns_db_class(db),
2085 0, 28800, 7200, 604800, 86400, buf, &rdata));
2086 rdatalist.type = rdata.type;
2087 rdatalist.covers = 0;
2088 rdatalist.rdclass = rdata.rdclass;
2089 rdatalist.ttl = 86400;
2090 ISC_LIST_APPEND(rdatalist.rdata, &rdata, link);
2091 CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset));
2092 CHECK(dns_db_findnode(db, name, ISC_TRUE, &node));
2093 CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL));
2094 cleanup:
2095 if (node != NULL)
2096 dns_db_detachnode(db, &node);
2097 return (result);
2098 }
2099
2100 static isc_result_t
2101 add_ns(dns_db_t *db, dns_dbversion_t *version, dns_name_t *name,
2102 dns_name_t *nsname)
2103 {
2104 dns_dbnode_t *node = NULL;
2105 dns_rdata_ns_t ns;
2106 dns_rdata_t rdata = DNS_RDATA_INIT;
2107 dns_rdatalist_t rdatalist;
2108 dns_rdataset_t rdataset;
2109 isc_result_t result;
2110 isc_buffer_t b;
2111 unsigned char buf[DNS_NAME_MAXWIRE];
2112
2113 isc_buffer_init(&b, buf, sizeof(buf));
2114
2115 dns_rdataset_init(&rdataset);
2116 dns_rdatalist_init(&rdatalist);
2117 ns.common.rdtype = dns_rdatatype_ns;
2118 ns.common.rdclass = dns_db_class(db);
2119 ns.mctx = NULL;
2120 dns_name_init(&ns.name, NULL);
2121 dns_name_clone(nsname, &ns.name);
2122 CHECK(dns_rdata_fromstruct(&rdata, dns_db_class(db), dns_rdatatype_ns,
2123 &ns, &b));
2124 rdatalist.type = rdata.type;
2125 rdatalist.covers = 0;
2126 rdatalist.rdclass = rdata.rdclass;
2127 rdatalist.ttl = 86400;
2128 ISC_LIST_APPEND(rdatalist.rdata, &rdata, link);
2129 CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset));
2130 CHECK(dns_db_findnode(db, name, ISC_TRUE, &node));
2131 CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL));
2132 cleanup:
2133 if (node != NULL)
2134 dns_db_detachnode(db, &node);
2135 return (result);
2136 }
2137
2138 static isc_result_t
2139 create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
2140 const cfg_obj_t *zonelist, const char **empty_dbtype,
2141 int empty_dbtypec, dns_zonestat_level_t statlevel)
2142 {
2143 char namebuf[DNS_NAME_FORMATSIZE];
2144 const cfg_listelt_t *element;
2145 const cfg_obj_t *obj;
2146 const cfg_obj_t *zconfig;
2147 const cfg_obj_t *zoptions;
2148 const char *rbt_dbtype[4] = { "rbt" };
2149 const char *sep = ": view ";
2150 const char *str;
2151 const char *viewname = view->name;
2152 dns_db_t *db = NULL;
2153 dns_dbversion_t *version = NULL;
2154 dns_fixedname_t cfixed;
2155 dns_fixedname_t fixed;
2156 dns_fixedname_t nsfixed;
2157 dns_name_t *contact;
2158 dns_name_t *ns;
2159 dns_name_t *zname;
2160 dns_zone_t *myzone = NULL;
2161 int rbt_dbtypec = 1;
2162 isc_result_t result;
2163 dns_namereln_t namereln;
2164 int order;
2165 unsigned int nlabels;
2166
2167 dns_fixedname_init(&fixed);
2168 zname = dns_fixedname_name(&fixed);
2169 dns_fixedname_init(&nsfixed);
2170 ns = dns_fixedname_name(&nsfixed);
2171 dns_fixedname_init(&cfixed);
2172 contact = dns_fixedname_name(&cfixed);
2173
2174 /*
2175 * Look for forward "zones" beneath this empty zone and if so
2176 * create a custom db for the empty zone.
2177 */
2178 for (element = cfg_list_first(zonelist);
2179 element != NULL;
2180 element = cfg_list_next(element)) {
2181
2182 zconfig = cfg_listelt_value(element);
2183 str = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
2184 CHECK(dns_name_fromstring(zname, str, 0, NULL));
2185 namereln = dns_name_fullcompare(zname, name, &order, &nlabels);
2186 if (namereln != dns_namereln_subdomain)
2187 continue;
2188
2189 zoptions = cfg_tuple_get(zconfig, "options");
2190
2191 obj = NULL;
2192 (void)cfg_map_get(zoptions, "type", &obj);
2193 INSIST(obj != NULL);
2194 if (strcasecmp(cfg_obj_asstring(obj), "forward") == 0) {
2195 obj = NULL;
2196 (void)cfg_map_get(zoptions, "forward", &obj);
2197 if (obj == NULL)
2198 continue;
2199 if (strcasecmp(cfg_obj_asstring(obj), "only") != 0)
2200 continue;
2201 }
2202 if (db == NULL) {
2203 CHECK(dns_db_create(view->mctx, "rbt", name,
2204 dns_dbtype_zone, view->rdclass,
2205 0, NULL, &db));
2206 CHECK(dns_db_newversion(db, &version));
2207 if (strcmp(empty_dbtype[2], "@") == 0)
2208 dns_name_clone(name, ns);
2209 else
2210 CHECK(dns_name_fromstring(ns, empty_dbtype[2],
2211 0, NULL));
2212 CHECK(dns_name_fromstring(contact, empty_dbtype[3],
2213 0, NULL));
2214 CHECK(add_soa(db, version, name, ns, contact));
2215 CHECK(add_ns(db, version, name, ns));
2216 }
2217 CHECK(add_ns(db, version, zname, dns_rootname));
2218 }
2219
2220 /*
2221 * Is the existing zone the ok to use?
2222 */
2223 if (zone != NULL) {
2224 unsigned int typec;
2225 const char **dbargv;
2226
2227 if (db != NULL) {
2228 typec = rbt_dbtypec;
2229 dbargv = rbt_dbtype;
2230 } else {
2231 typec = empty_dbtypec;
2232 dbargv = empty_dbtype;
2233 }
2234
2235 result = check_dbtype(zone, typec, dbargv, view->mctx);
2236 if (result != ISC_R_SUCCESS)
2237 zone = NULL;
2238
2239 if (zone != NULL && dns_zone_gettype(zone) != dns_zone_master)
2240 zone = NULL;
2241 if (zone != NULL && dns_zone_getfile(zone) != NULL)
2242 zone = NULL;
2243 if (zone != NULL) {
2244 dns_zone_getraw(zone, &myzone);
2245 if (myzone != NULL) {
2246 dns_zone_detach(&myzone);
2247 zone = NULL;
2248 }
2249 }
2250 }
2251
2252 if (zone == NULL) {
2253 CHECK(dns_zonemgr_createzone(ns_g_server->zonemgr, &myzone));
2254 zone = myzone;
2255 CHECK(dns_zone_setorigin(zone, name));
2256 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
2257 if (db == NULL)
2258 CHECK(dns_zone_setdbtype(zone, empty_dbtypec,
2259 empty_dbtype));
2260 dns_zone_setclass(zone, view->rdclass);
2261 dns_zone_settype(zone, dns_zone_master);
2262 dns_zone_setstats(zone, ns_g_server->zonestats);
2263 }
2264
2265 dns_zone_setoption(zone, ~DNS_ZONEOPT_NOCHECKNS, ISC_FALSE);
2266 dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, ISC_TRUE);
2267 dns_zone_setnotifytype(zone, dns_notifytype_no);
2268 dns_zone_setdialup(zone, dns_dialuptype_no);
2269 if (view->queryacl != NULL)
2270 dns_zone_setqueryacl(zone, view->queryacl);
2271 else
2272 dns_zone_clearqueryacl(zone);
2273 if (view->queryonacl != NULL)
2274 dns_zone_setqueryonacl(zone, view->queryonacl);
2275 else
2276 dns_zone_clearqueryonacl(zone);
2277 dns_zone_clearupdateacl(zone);
2278 if (view->transferacl != NULL)
2279 dns_zone_setxfracl(zone, view->transferacl);
2280 else
2281 dns_zone_clearxfracl(zone);
2282
2283 CHECK(setquerystats(zone, view->mctx, statlevel));
2284 if (db != NULL) {
2285 dns_db_closeversion(db, &version, ISC_TRUE);
2286 CHECK(dns_zone_replacedb(zone, db, ISC_FALSE));
2287 }
2288 dns_zone_setview(zone, view);
2289 CHECK(dns_view_addzone(view, zone));
2290
2291 if (!strcmp(viewname, "_default")) {
2292 sep = "";
2293 viewname = "";
2294 }
2295 dns_name_format(name, namebuf, sizeof(namebuf));
2296 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
2297 ISC_LOG_INFO, "automatic empty zone%s%s: %s",
2298 sep, viewname, namebuf);
2299
2300 cleanup:
2301 if (myzone != NULL)
2302 dns_zone_detach(&myzone);
2303 if (version != NULL)
2304 dns_db_closeversion(db, &version, ISC_FALSE);
2305 if (db != NULL)
2306 dns_db_detach(&db);
2307
2308 INSIST(version == NULL);
2309
2310 return (result);
2311 }
2312
2313 /*
2314 * Configure 'view' according to 'vconfig', taking defaults from 'config'
2315 * where values are missing in 'vconfig'.
2316 *
2317 * When configuring the default view, 'vconfig' will be NULL and the
2318 * global defaults in 'config' used exclusively.
2319 */
2320 static isc_result_t
2321 configure_view(dns_view_t *view, dns_viewlist_t *viewlist,
2322 cfg_obj_t *config, cfg_obj_t *vconfig,
2323 ns_cachelist_t *cachelist, const cfg_obj_t *bindkeys,
2324 isc_mem_t *mctx, cfg_aclconfctx_t *actx,
2325 isc_boolean_t need_hints)
2326 {
2327 const cfg_obj_t *maps[4];
2328 const cfg_obj_t *cfgmaps[3];
2329 const cfg_obj_t *optionmaps[3];
2330 const cfg_obj_t *options = NULL;
2331 const cfg_obj_t *voptions = NULL;
2332 const cfg_obj_t *forwardtype;
2333 const cfg_obj_t *forwarders;
2334 const cfg_obj_t *alternates;
2335 const cfg_obj_t *zonelist;
2336 const cfg_obj_t *dlzlist;
2337 const cfg_obj_t *dlz;
2338 unsigned int dlzargc;
2339 char **dlzargv;
2340 const cfg_obj_t *disabled;
2341 const cfg_obj_t *obj;
2342 const cfg_listelt_t *element;
2343 in_port_t port;
2344 dns_cache_t *cache = NULL;
2345 isc_result_t result;
2346 unsigned int cleaning_interval;
2347 size_t max_cache_size;
2348 size_t max_acache_size;
2349 size_t max_adb_size;
2350 isc_uint32_t lame_ttl;
2351 dns_tsig_keyring_t *ring = NULL;
2352 dns_view_t *pview = NULL; /* Production view */
2353 isc_mem_t *cmctx = NULL, *hmctx = NULL;
2354 dns_dispatch_t *dispatch4 = NULL;
2355 dns_dispatch_t *dispatch6 = NULL;
2356 isc_boolean_t reused_cache = ISC_FALSE;
2357 isc_boolean_t shared_cache = ISC_FALSE;
2358 int i = 0, j = 0, k = 0;
2359 const char *str;
2360 const char *cachename = NULL;
2361 dns_order_t *order = NULL;
2362 isc_uint32_t udpsize;
2363 isc_uint32_t maxbits;
2364 unsigned int resopts = 0;
2365 dns_zone_t *zone = NULL;
2366 isc_uint32_t max_clients_per_query;
2367 isc_boolean_t empty_zones_enable;
2368 const cfg_obj_t *disablelist = NULL;
2369 isc_stats_t *resstats = NULL;
2370 dns_stats_t *resquerystats = NULL;
2371 isc_boolean_t auto_dlv = ISC_FALSE;
2372 isc_boolean_t auto_root = ISC_FALSE;
2373 ns_cache_t *nsc;
2374 isc_boolean_t zero_no_soattl;
2375 dns_acl_t *clients = NULL, *mapped = NULL, *excluded = NULL;
2376 unsigned int query_timeout, ndisp;
2377 struct cfg_context *nzctx;
2378 isc_boolean_t old_rpz_ok = ISC_FALSE;
2379 isc_dscp_t dscp4 = -1, dscp6 = -1;
2380
2381 REQUIRE(DNS_VIEW_VALID(view));
2382
2383 if (config != NULL)
2384 (void)cfg_map_get(config, "options", &options);
2385
2386 /*
2387 * maps: view options, options, defaults
2388 * cfgmaps: view options, config
2389 * optionmaps: view options, options
2390 */
2391 if (vconfig != NULL) {
2392 voptions = cfg_tuple_get(vconfig, "options");
2393 maps[i++] = voptions;
2394 optionmaps[j++] = voptions;
2395 cfgmaps[k++] = voptions;
2396 }
2397 if (options != NULL) {
2398 maps[i++] = options;
2399 optionmaps[j++] = options;
2400 }
2401
2402 maps[i++] = ns_g_defaults;
2403 maps[i] = NULL;
2404 optionmaps[j] = NULL;
2405 if (config != NULL)
2406 cfgmaps[k++] = config;
2407 cfgmaps[k] = NULL;
2408
2409 /*
2410 * Set the view's port number for outgoing queries.
2411 */
2412 CHECKM(ns_config_getport(config, &port), "port");
2413 dns_view_setdstport(view, port);
2414
2415 /*
2416 * Create additional cache for this view and zones under the view
2417 * if explicitly enabled.
2418 * XXX950 default to on.
2419 */
2420 obj = NULL;
2421 (void)ns_config_get(maps, "acache-enable", &obj);
2422 if (obj != NULL && cfg_obj_asboolean(obj)) {
2423 cmctx = NULL;
2424 CHECK(isc_mem_create(0, 0, &cmctx));
2425 CHECK(dns_acache_create(&view->acache, cmctx, ns_g_taskmgr,
2426 ns_g_timermgr));
2427 isc_mem_setname(cmctx, "acache", NULL);
2428 isc_mem_detach(&cmctx);
2429 }
2430 if (view->acache != NULL) {
2431 obj = NULL;
2432 result = ns_config_get(maps, "acache-cleaning-interval", &obj);
2433 INSIST(result == ISC_R_SUCCESS);
2434 dns_acache_setcleaninginterval(view->acache,
2435 cfg_obj_asuint32(obj) * 60);
2436
2437 obj = NULL;
2438 result = ns_config_get(maps, "max-acache-size", &obj);
2439 INSIST(result == ISC_R_SUCCESS);
2440 if (cfg_obj_isstring(obj)) {
2441 str = cfg_obj_asstring(obj);
2442 INSIST(strcasecmp(str, "unlimited") == 0);
2443 max_acache_size = 0;
2444 } else {
2445 isc_resourcevalue_t value;
2446 value = cfg_obj_asuint64(obj);
2447 if (value > SIZE_MAX) {
2448 cfg_obj_log(obj, ns_g_lctx,
2449 ISC_LOG_WARNING,
2450 "'max-acache-size "
2451 "%" ISC_PRINT_QUADFORMAT "u' "
2452 "is too large for this "
2453 "system; reducing to %lu",
2454 value, (unsigned long)SIZE_MAX);
2455 value = SIZE_MAX;
2456 }
2457 max_acache_size = (size_t) value;
2458 }
2459 dns_acache_setcachesize(view->acache, max_acache_size);
2460 }
2461
2462 CHECK(configure_view_acl(vconfig, config, "allow-query", NULL, actx,
2463 ns_g_mctx, &view->queryacl));
2464 if (view->queryacl == NULL) {
2465 CHECK(configure_view_acl(NULL, ns_g_config, "allow-query",
2466 NULL, actx, ns_g_mctx,
2467 &view->queryacl));
2468 }
2469
2470 /*
2471 * Make the list of response policy zone names for a view that
2472 * is used for real lookups and so cares about hints.
2473 */
2474 obj = NULL;
2475 if (view->rdclass == dns_rdataclass_in && need_hints &&
2476 ns_config_get(maps, "response-policy", &obj) == ISC_R_SUCCESS) {
2477 CHECK(configure_rpz(view, obj, &old_rpz_ok));
2478 }
2479
2480 /*
2481 * Configure the zones.
2482 */
2483 zonelist = NULL;
2484 if (voptions != NULL)
2485 (void)cfg_map_get(voptions, "zone", &zonelist);
2486 else
2487 (void)cfg_map_get(config, "zone", &zonelist);
2488
2489 /*
2490 * Load zone configuration
2491 */
2492 for (element = cfg_list_first(zonelist);
2493 element != NULL;
2494 element = cfg_list_next(element))
2495 {
2496 const cfg_obj_t *zconfig = cfg_listelt_value(element);
2497 CHECK(configure_zone(config, zconfig, vconfig, mctx, view,
2498 viewlist, actx, ISC_FALSE, old_rpz_ok));
2499 }
2500
2501 /*
2502 * Check that a master or slave zone was found for each
2503 * zone named in the response policy statement.
2504 */
2505 if (view->rpzs != NULL) {
2506 dns_rpz_num_t n;
2507
2508 for (n = 0; n < view->rpzs->p.num_zones; ++n)
2509 {
2510 if ((view->rpzs->defined & DNS_RPZ_ZBIT(n)) == 0) {
2511 char namebuf[DNS_NAME_FORMATSIZE];
2512
2513 dns_name_format(&view->rpzs->zones[n]->origin,
2514 namebuf, sizeof(namebuf));
2515 cfg_obj_log(obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
2516 "'%s' is not a master or slave zone",
2517 namebuf);
2518 result = ISC_R_NOTFOUND;
2519 goto cleanup;
2520 }
2521 }
2522 }
2523
2524 /*
2525 * If we're allowing added zones, then load zone configuration
2526 * from the newzone file for zones that were added during previous
2527 * runs.
2528 */
2529 nzctx = view->new_zone_config;
2530 if (nzctx != NULL && nzctx->nzconfig != NULL) {
2531 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2532 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
2533 "loading additional zones for view '%s'",
2534 view->name);
2535
2536 zonelist = NULL;
2537 cfg_map_get(nzctx->nzconfig, "zone", &zonelist);
2538
2539 for (element = cfg_list_first(zonelist);
2540 element != NULL;
2541 element = cfg_list_next(element))
2542 {
2543 const cfg_obj_t *zconfig = cfg_listelt_value(element);
2544 CHECK(configure_zone(config, zconfig, vconfig,
2545 mctx, view, NULL, actx,
2546 ISC_TRUE, ISC_FALSE));
2547 }
2548 }
2549
2550 /*
2551 * Create Dynamically Loadable Zone driver.
2552 */
2553 dlzlist = NULL;
2554 if (voptions != NULL)
2555 (void)cfg_map_get(voptions, "dlz", &dlzlist);
2556 else
2557 (void)cfg_map_get(config, "dlz", &dlzlist);
2558
2559 for (element = cfg_list_first(dlzlist);
2560 element != NULL;
2561 element = cfg_list_next(element))
2562 {
2563 dlz = cfg_listelt_value(element);
2564
2565 obj = NULL;
2566 (void)cfg_map_get(dlz, "database", &obj);
2567 if (obj != NULL) {
2568 dns_dlzdb_t *dlzdb = NULL;
2569 const cfg_obj_t *name, *search = NULL;
2570 char *s = isc_mem_strdup(mctx, cfg_obj_asstring(obj));
2571
2572 if (s == NULL) {
2573 result = ISC_R_NOMEMORY;
2574 goto cleanup;
2575 }
2576
2577 result = dns_dlzstrtoargv(mctx, s, &dlzargc, &dlzargv);
2578 if (result != ISC_R_SUCCESS) {
2579 isc_mem_free(mctx, s);
2580 goto cleanup;
2581 }
2582
2583 name = cfg_map_getname(dlz);
2584 result = dns_dlzcreate(mctx, cfg_obj_asstring(name),
2585 dlzargv[0], dlzargc, dlzargv,
2586 &dlzdb);
2587 isc_mem_free(mctx, s);
2588 isc_mem_put(mctx, dlzargv, dlzargc * sizeof(*dlzargv));
2589 if (result != ISC_R_SUCCESS)
2590 goto cleanup;
2591
2592 /*
2593 * If the DLZ backend supports configuration,
2594 * and is searchable, then call its configure
2595 * method now. If not searchable, we'll take
2596 * care of it when we process the zone statement.
2597 */
2598 (void)cfg_map_get(dlz, "search", &search);
2599 if (search == NULL || cfg_obj_asboolean(search)) {
2600 dlzdb->search = ISC_TRUE;
2601 result = dns_dlzconfigure(view, dlzdb,
2602 dlzconfigure_callback);
2603 if (result != ISC_R_SUCCESS)
2604 goto cleanup;
2605 ISC_LIST_APPEND(view->dlz_searched,
2606 dlzdb, link);
2607 } else {
2608 dlzdb->search = ISC_FALSE;
2609 ISC_LIST_APPEND(view->dlz_unsearched,
2610 dlzdb, link);
2611 }
2612
2613 }
2614 }
2615
2616 /*
2617 * Obtain configuration parameters that affect the decision of whether
2618 * we can reuse/share an existing cache.
2619 */
2620 obj = NULL;
2621 result = ns_config_get(maps, "cleaning-interval", &obj);
2622 INSIST(result == ISC_R_SUCCESS);
2623 cleaning_interval = cfg_obj_asuint32(obj) * 60;
2624
2625 obj = NULL;
2626 result = ns_config_get(maps, "max-cache-size", &obj);
2627 INSIST(result == ISC_R_SUCCESS);
2628 if (cfg_obj_isstring(obj)) {
2629 str = cfg_obj_asstring(obj);
2630 INSIST(strcasecmp(str, "unlimited") == 0);
2631 max_cache_size = 0;
2632 } else {
2633 isc_resourcevalue_t value;
2634 value = cfg_obj_asuint64(obj);
2635 if (value > SIZE_MAX) {
2636 cfg_obj_log(obj, ns_g_lctx,
2637 ISC_LOG_WARNING,
2638 "'max-cache-size "
2639 "%" ISC_PRINT_QUADFORMAT "u' "
2640 "is too large for this "
2641 "system; reducing to %lu",
2642 value, (unsigned long)SIZE_MAX);
2643 value = SIZE_MAX;
2644 }
2645 max_cache_size = (size_t) value;
2646 }
2647
2648 /* Check-names. */
2649 obj = NULL;
2650 result = ns_checknames_get(maps, "response", &obj);
2651 INSIST(result == ISC_R_SUCCESS);
2652
2653 str = cfg_obj_asstring(obj);
2654 if (strcasecmp(str, "fail") == 0) {
2655 resopts |= DNS_RESOLVER_CHECKNAMES |
2656 DNS_RESOLVER_CHECKNAMESFAIL;
2657 view->checknames = ISC_TRUE;
2658 } else if (strcasecmp(str, "warn") == 0) {
2659 resopts |= DNS_RESOLVER_CHECKNAMES;
2660 view->checknames = ISC_FALSE;
2661 } else if (strcasecmp(str, "ignore") == 0) {
2662 view->checknames = ISC_FALSE;
2663 } else
2664 INSIST(0);
2665
2666 obj = NULL;
2667 result = ns_config_get(maps, "zero-no-soa-ttl-cache", &obj);
2668 INSIST(result == ISC_R_SUCCESS);
2669 zero_no_soattl = cfg_obj_asboolean(obj);
2670
2671 obj = NULL;
2672 result = ns_config_get(maps, "dns64", &obj);
2673 if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind") &&
2674 strcmp(view->name, "_meta")) {
2675 isc_netaddr_t na, suffix, *sp;
2676 unsigned int prefixlen;
2677 const char *server, *contact;
2678 const cfg_obj_t *myobj;
2679
2680 myobj = NULL;
2681 result = ns_config_get(maps, "dns64-server", &myobj);
2682 if (result == ISC_R_SUCCESS)
2683 server = cfg_obj_asstring(myobj);
2684 else
2685 server = NULL;
2686
2687 myobj = NULL;
2688 result = ns_config_get(maps, "dns64-contact", &myobj);
2689 if (result == ISC_R_SUCCESS)
2690 contact = cfg_obj_asstring(myobj);
2691 else
2692 contact = NULL;
2693
2694 for (element = cfg_list_first(obj);
2695 element != NULL;
2696 element = cfg_list_next(element))
2697 {
2698 const cfg_obj_t *map = cfg_listelt_value(element);
2699 dns_dns64_t *dns64 = NULL;
2700 unsigned int dns64options = 0;
2701
2702 cfg_obj_asnetprefix(cfg_map_getname(map), &na,
2703 &prefixlen);
2704
2705 obj = NULL;
2706 (void)cfg_map_get(map, "suffix", &obj);
2707 if (obj != NULL) {
2708 sp = &suffix;
2709 isc_netaddr_fromsockaddr(sp,
2710 cfg_obj_assockaddr(obj));
2711 } else
2712 sp = NULL;
2713
2714 clients = mapped = excluded = NULL;
2715 obj = NULL;
2716 (void)cfg_map_get(map, "clients", &obj);
2717 if (obj != NULL) {
2718 result = cfg_acl_fromconfig(obj, config,
2719 ns_g_lctx, actx,
2720 mctx, 0, &clients);
2721 if (result != ISC_R_SUCCESS)
2722 goto cleanup;
2723 }
2724 obj = NULL;
2725 (void)cfg_map_get(map, "mapped", &obj);
2726 if (obj != NULL) {
2727 result = cfg_acl_fromconfig(obj, config,
2728 ns_g_lctx, actx,
2729 mctx, 0, &mapped);
2730 if (result != ISC_R_SUCCESS)
2731 goto cleanup;
2732 }
2733 obj = NULL;
2734 (void)cfg_map_get(map, "exclude", &obj);
2735 if (obj != NULL) {
2736 result = cfg_acl_fromconfig(obj, config,
2737 ns_g_lctx, actx,
2738 mctx, 0, &excluded);
2739 if (result != ISC_R_SUCCESS)
2740 goto cleanup;
2741 }
2742
2743 obj = NULL;
2744 (void)cfg_map_get(map, "recursive-only", &obj);
2745 if (obj != NULL && cfg_obj_asboolean(obj))
2746 dns64options |= DNS_DNS64_RECURSIVE_ONLY;
2747
2748 obj = NULL;
2749 (void)cfg_map_get(map, "break-dnssec", &obj);
2750 if (obj != NULL && cfg_obj_asboolean(obj))
2751 dns64options |= DNS_DNS64_BREAK_DNSSEC;
2752
2753 result = dns_dns64_create(mctx, &na, prefixlen, sp,
2754 clients, mapped, excluded,
2755 dns64options, &dns64);
2756 if (result != ISC_R_SUCCESS)
2757 goto cleanup;
2758 dns_dns64_append(&view->dns64, dns64);
2759 view->dns64cnt++;
2760 result = dns64_reverse(view, mctx, &na, prefixlen,
2761 server, contact);
2762 if (result != ISC_R_SUCCESS)
2763 goto cleanup;
2764 if (clients != NULL)
2765 dns_acl_detach(&clients);
2766 if (mapped != NULL)
2767 dns_acl_detach(&mapped);
2768 if (excluded != NULL)
2769 dns_acl_detach(&excluded);
2770 }
2771 }
2772
2773 obj = NULL;
2774 result = ns_config_get(maps, "dnssec-accept-expired", &obj);
2775 INSIST(result == ISC_R_SUCCESS);
2776 view->acceptexpired = cfg_obj_asboolean(obj);
2777
2778 obj = NULL;
2779 result = ns_config_get(maps, "dnssec-validation", &obj);
2780 INSIST(result == ISC_R_SUCCESS);
2781 if (cfg_obj_isboolean(obj)) {
2782 view->enablevalidation = cfg_obj_asboolean(obj);
2783 } else {
2784 /* If dnssec-validation is not boolean, it must be "auto" */
2785 view->enablevalidation = ISC_TRUE;
2786 auto_root = ISC_TRUE;
2787 }
2788
2789 obj = NULL;
2790 result = ns_config_get(maps, "max-cache-ttl", &obj);
2791 INSIST(result == ISC_R_SUCCESS);
2792 view->maxcachettl = cfg_obj_asuint32(obj);
2793
2794 obj = NULL;
2795 result = ns_config_get(maps, "max-ncache-ttl", &obj);
2796 INSIST(result == ISC_R_SUCCESS);
2797 view->maxncachettl = cfg_obj_asuint32(obj);
2798 if (view->maxncachettl > 7 * 24 * 3600)
2799 view->maxncachettl = 7 * 24 * 3600;
2800
2801 /*
2802 * Configure the view's cache.
2803 *
2804 * First, check to see if there are any attach-cache options. If yes,
2805 * attempt to lookup an existing cache at attach it to the view. If
2806 * there is not one, then try to reuse an existing cache if possible;
2807 * otherwise create a new cache.
2808 *
2809 * Note that the ADB is not preserved or shared in either case.
2810 *
2811 * When a matching view is found, the associated statistics are also
2812 * retrieved and reused.
2813 *
2814 * XXX Determining when it is safe to reuse or share a cache is tricky.
2815 * When the view's configuration changes, the cached data may become
2816 * invalid because it reflects our old view of the world. We check
2817 * some of the configuration parameters that could invalidate the cache
2818 * or otherwise make it unsharable, but there are other configuration
2819 * options that should be checked. For example, if a view uses a
2820 * forwarder, changes in the forwarder configuration may invalidate
2821 * the cache. At the moment, it's the administrator's responsibility to
2822 * ensure these configuration options don't invalidate reusing/sharing.
2823 */
2824 obj = NULL;
2825 result = ns_config_get(maps, "attach-cache", &obj);
2826 if (result == ISC_R_SUCCESS)
2827 cachename = cfg_obj_asstring(obj);
2828 else
2829 cachename = view->name;
2830 cache = NULL;
2831 nsc = cachelist_find(cachelist, cachename);
2832 if (nsc != NULL) {
2833 if (!cache_sharable(nsc->primaryview, view, zero_no_soattl,
2834 cleaning_interval, max_cache_size)) {
2835 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
2836 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
2837 "views %s and %s can't share the cache "
2838 "due to configuration parameter mismatch",
2839 nsc->primaryview->name, view->name);
2840 result = ISC_R_FAILURE;
2841 goto cleanup;
2842 }
2843 dns_cache_attach(nsc->cache, &cache);
2844 shared_cache = ISC_TRUE;
2845 } else {
2846 if (strcmp(cachename, view->name) == 0) {
2847 result = dns_viewlist_find(&ns_g_server->viewlist,
2848 cachename, view->rdclass,
2849 &pview);
2850 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
2851 goto cleanup;
2852 if (pview != NULL) {
2853 if (!cache_reusable(pview, view,
2854 zero_no_soattl)) {
2855 isc_log_write(ns_g_lctx,
2856 NS_LOGCATEGORY_GENERAL,
2857 NS_LOGMODULE_SERVER,
2858 ISC_LOG_DEBUG(1),
2859 "cache cannot be reused "
2860 "for view %s due to "
2861 "configuration parameter "
2862 "mismatch", view->name);
2863 } else {
2864 INSIST(pview->cache != NULL);
2865 isc_log_write(ns_g_lctx,
2866 NS_LOGCATEGORY_GENERAL,
2867 NS_LOGMODULE_SERVER,
2868 ISC_LOG_DEBUG(3),
2869 "reusing existing cache");
2870 reused_cache = ISC_TRUE;
2871 dns_cache_attach(pview->cache, &cache);
2872 }
2873 dns_view_getresstats(pview, &resstats);
2874 dns_view_getresquerystats(pview,
2875 &resquerystats);
2876 dns_view_detach(&pview);
2877 }
2878 }
2879 if (cache == NULL) {
2880 /*
2881 * Create a cache with the desired name. This normally
2882 * equals the view name, but may also be a forward
2883 * reference to a view that share the cache with this
2884 * view but is not yet configured. If it is not the
2885 * view name but not a forward reference either, then it
2886 * is simply a named cache that is not shared.
2887 *
2888 * We use two separate memory contexts for the
2889 * cache, for the main cache memory and the heap
2890 * memory.
2891 */
2892 CHECK(isc_mem_create(0, 0, &cmctx));
2893 isc_mem_setname(cmctx, "cache", NULL);
2894 CHECK(isc_mem_create(0, 0, &hmctx));
2895 isc_mem_setname(hmctx, "cache_heap", NULL);
2896 CHECK(dns_cache_create3(cmctx, hmctx, ns_g_taskmgr,
2897 ns_g_timermgr, view->rdclass,
2898 cachename, "rbt", 0, NULL,
2899 &cache));
2900 isc_mem_detach(&cmctx);
2901 isc_mem_detach(&hmctx);
2902 }
2903 nsc = isc_mem_get(mctx, sizeof(*nsc));
2904 if (nsc == NULL) {
2905 result = ISC_R_NOMEMORY;
2906 goto cleanup;
2907 }
2908 nsc->cache = NULL;
2909 dns_cache_attach(cache, &nsc->cache);
2910 nsc->primaryview = view;
2911 nsc->needflush = ISC_FALSE;
2912 nsc->adbsizeadjusted = ISC_FALSE;
2913 ISC_LINK_INIT(nsc, link);
2914 ISC_LIST_APPEND(*cachelist, nsc, link);
2915 }
2916 dns_view_setcache2(view, cache, shared_cache);
2917
2918 /*
2919 * cache-file cannot be inherited if views are present, but this
2920 * should be caught by the configuration checking stage.
2921 */
2922 obj = NULL;
2923 result = ns_config_get(maps, "cache-file", &obj);
2924 if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind") != 0) {
2925 CHECK(dns_cache_setfilename(cache, cfg_obj_asstring(obj)));
2926 if (!reused_cache && !shared_cache)
2927 CHECK(dns_cache_load(cache));
2928 }
2929
2930 dns_cache_setcleaninginterval(cache, cleaning_interval);
2931 dns_cache_setcachesize(cache, max_cache_size);
2932
2933 dns_cache_detach(&cache);
2934
2935 /*
2936 * Resolver.
2937 *
2938 * XXXRTH Hardwired number of tasks.
2939 */
2940 CHECK(get_view_querysource_dispatch(maps, AF_INET, &dispatch4, &dscp4,
2941 ISC_TF(ISC_LIST_PREV(view, link)
2942 == NULL)));
2943 CHECK(get_view_querysource_dispatch(maps, AF_INET6, &dispatch6, &dscp6,
2944 ISC_TF(ISC_LIST_PREV(view, link)
2945 == NULL)));
2946 if (dispatch4 == NULL && dispatch6 == NULL) {
2947 UNEXPECTED_ERROR(__FILE__, __LINE__,
2948 "unable to obtain neither an IPv4 nor"
2949 " an IPv6 dispatch");
2950 result = ISC_R_UNEXPECTED;
2951 goto cleanup;
2952 }
2953
2954 if (resstats == NULL) {
2955 CHECK(isc_stats_create(mctx, &resstats,
2956 dns_resstatscounter_max));
2957 }
2958 dns_view_setresstats(view, resstats);
2959 if (resquerystats == NULL)
2960 CHECK(dns_rdatatypestats_create(mctx, &resquerystats));
2961 dns_view_setresquerystats(view, resquerystats);
2962
2963 ndisp = 4 * ISC_MIN(ns_g_udpdisp, MAX_UDP_DISPATCH);
2964 CHECK(dns_view_createresolver(view, ns_g_taskmgr, RESOLVER_NTASKS,
2965 ndisp, ns_g_socketmgr, ns_g_timermgr,
2966 resopts, ns_g_dispatchmgr,
2967 dispatch4, dispatch6));
2968
2969 if (dscp4 == -1)
2970 dscp4 = ns_g_dscp;
2971 if (dscp6 == -1)
2972 dscp6 = ns_g_dscp;
2973 if (dscp4 != -1)
2974 dns_resolver_setquerydscp4(view->resolver, dscp4);
2975 if (dscp6 != -1)
2976 dns_resolver_setquerydscp6(view->resolver, dscp6);
2977
2978 /*
2979 * Set the ADB cache size to 1/8th of the max-cache-size or
2980 * MAX_ADB_SIZE_FOR_CACHESHARE when the cache is shared.
2981 */
2982 max_adb_size = 0;
2983 if (max_cache_size != 0U) {
2984 max_adb_size = max_cache_size / 8;
2985 if (max_adb_size == 0U)
2986 max_adb_size = 1; /* Force minimum. */
2987 if (view != nsc->primaryview &&
2988 max_adb_size > MAX_ADB_SIZE_FOR_CACHESHARE) {
2989 max_adb_size = MAX_ADB_SIZE_FOR_CACHESHARE;
2990 if (!nsc->adbsizeadjusted) {
2991 dns_adb_setadbsize(nsc->primaryview->adb,
2992 MAX_ADB_SIZE_FOR_CACHESHARE);
2993 nsc->adbsizeadjusted = ISC_TRUE;
2994 }
2995 }
2996 }
2997 dns_adb_setadbsize(view->adb, max_adb_size);
2998
2999 /*
3000 * Set resolver's lame-ttl.
3001 */
3002 obj = NULL;
3003 result = ns_config_get(maps, "lame-ttl", &obj);
3004 INSIST(result == ISC_R_SUCCESS);
3005 lame_ttl = cfg_obj_asuint32(obj);
3006 if (lame_ttl > 1800)
3007 lame_ttl = 1800;
3008 dns_resolver_setlamettl(view->resolver, lame_ttl);
3009
3010 /*
3011 * Set the resolver's query timeout.
3012 */
3013 obj = NULL;
3014 result = ns_config_get(maps, "resolver-query-timeout", &obj);
3015 INSIST(result == ISC_R_SUCCESS);
3016 query_timeout = cfg_obj_asuint32(obj);
3017 dns_resolver_settimeout(view->resolver, query_timeout);
3018
3019 /* Specify whether to use 0-TTL for negative response for SOA query */
3020 dns_resolver_setzeronosoattl(view->resolver, zero_no_soattl);
3021
3022 /*
3023 * Set the resolver's EDNS UDP size.
3024 */
3025 obj = NULL;
3026 result = ns_config_get(maps, "edns-udp-size", &obj);
3027 INSIST(result == ISC_R_SUCCESS);
3028 udpsize = cfg_obj_asuint32(obj);
3029 if (udpsize < 512)
3030 udpsize = 512;
3031 if (udpsize > 4096)
3032 udpsize = 4096;
3033 dns_resolver_setudpsize(view->resolver, (isc_uint16_t)udpsize);
3034
3035 /*
3036 * Set the maximum UDP response size.
3037 */
3038 obj = NULL;
3039 result = ns_config_get(maps, "max-udp-size", &obj);
3040 INSIST(result == ISC_R_SUCCESS);
3041 udpsize = cfg_obj_asuint32(obj);
3042 if (udpsize < 512)
3043 udpsize = 512;
3044 if (udpsize > 4096)
3045 udpsize = 4096;
3046 view->maxudp = udpsize;
3047
3048 #ifdef ISC_PLATFORM_USESIT
3049 /*
3050 * Set the maximum UDP when a SIT is not provided.
3051 */
3052 obj = NULL;
3053 result = ns_config_get(maps, "nosit-udp-size", &obj);
3054 INSIST(result == ISC_R_SUCCESS);
3055 udpsize = cfg_obj_asuint32(obj);
3056 if (udpsize < 128)
3057 udpsize = 128;
3058 if (udpsize > view->maxudp)
3059 udpsize = view->maxudp;
3060 view->situdp = udpsize;
3061 #endif
3062
3063 /*
3064 * Set the maximum rsa exponent bits.
3065 */
3066 obj = NULL;
3067 result = ns_config_get(maps, "max-rsa-exponent-size", &obj);
3068 INSIST(result == ISC_R_SUCCESS);
3069 maxbits = cfg_obj_asuint32(obj);
3070 if (maxbits != 0 && maxbits < 35)
3071 maxbits = 35;
3072 if (maxbits > 4096)
3073 maxbits = 4096;
3074 view->maxbits = maxbits;
3075
3076 /*
3077 * Set supported DNSSEC algorithms.
3078 */
3079 dns_resolver_reset_algorithms(view->resolver);
3080 disabled = NULL;
3081 (void)ns_config_get(maps, "disable-algorithms", &disabled);
3082 if (disabled != NULL) {
3083 for (element = cfg_list_first(disabled);
3084 element != NULL;
3085 element = cfg_list_next(element))
3086 CHECK(disable_algorithms(cfg_listelt_value(element),
3087 view->resolver));
3088 }
3089
3090 /*
3091 * Set supported DS/DLV digest types.
3092 */
3093 dns_resolver_reset_ds_digests(view->resolver);
3094 disabled = NULL;
3095 (void)ns_config_get(maps, "disable-ds-digests", &disabled);
3096 if (disabled != NULL) {
3097 for (element = cfg_list_first(disabled);
3098 element != NULL;
3099 element = cfg_list_next(element))
3100 CHECK(disable_ds_digests(cfg_listelt_value(element),
3101 view->resolver));
3102 }
3103
3104 /*
3105 * A global or view "forwarders" option, if present,
3106 * creates an entry for "." in the forwarding table.
3107 */
3108 forwardtype = NULL;
3109 forwarders = NULL;
3110 (void)ns_config_get(maps, "forward", &forwardtype);
3111 (void)ns_config_get(maps, "forwarders", &forwarders);
3112 if (forwarders != NULL)
3113 CHECK(configure_forward(config, view, dns_rootname,
3114 forwarders, forwardtype));
3115
3116 /*
3117 * Dual Stack Servers.
3118 */
3119 alternates = NULL;
3120 (void)ns_config_get(maps, "dual-stack-servers", &alternates);
3121 if (alternates != NULL)
3122 CHECK(configure_alternates(config, view, alternates));
3123
3124 /*
3125 * We have default hints for class IN if we need them.
3126 */
3127 if (view->rdclass == dns_rdataclass_in && view->hints == NULL)
3128 dns_view_sethints(view, ns_g_server->in_roothints);
3129
3130 /*
3131 * If we still have no hints, this is a non-IN view with no
3132 * "hints zone" configured. Issue a warning, except if this
3133 * is a root server. Root servers never need to consult
3134 * their hints, so it's no point requiring users to configure
3135 * them.
3136 */
3137 if (view->hints == NULL) {
3138 dns_zone_t *rootzone = NULL;
3139 (void)dns_view_findzone(view, dns_rootname, &rootzone);
3140 if (rootzone != NULL) {
3141 dns_zone_detach(&rootzone);
3142 need_hints = ISC_FALSE;
3143 }
3144 if (need_hints)
3145 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
3146 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
3147 "no root hints for view '%s'",
3148 view->name);
3149 }
3150
3151 /*
3152 * Configure the view's TSIG keys.
3153 */
3154 CHECK(ns_tsigkeyring_fromconfig(config, vconfig, view->mctx, &ring));
3155 if (ns_g_server->sessionkey != NULL) {
3156 CHECK(dns_tsigkeyring_add(ring, ns_g_server->session_keyname,
3157 ns_g_server->sessionkey));
3158 }
3159 dns_view_setkeyring(view, ring);
3160 dns_tsigkeyring_detach(&ring);
3161
3162 /*
3163 * See if we can re-use a dynamic key ring.
3164 */
3165 result = dns_viewlist_find(&ns_g_server->viewlist, view->name,
3166 view->rdclass, &pview);
3167 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
3168 goto cleanup;
3169 if (pview != NULL) {
3170 dns_view_getdynamickeyring(pview, &ring);
3171 if (ring != NULL)
3172 dns_view_setdynamickeyring(view, ring);
3173 dns_tsigkeyring_detach(&ring);
3174 dns_view_detach(&pview);
3175 } else
3176 dns_view_restorekeyring(view);
3177
3178 /*
3179 * Configure the view's peer list.
3180 */
3181 {
3182 const cfg_obj_t *peers = NULL;
3183 dns_peerlist_t *newpeers = NULL;
3184
3185 (void)ns_config_get(cfgmaps, "server", &peers);
3186 CHECK(dns_peerlist_new(mctx, &newpeers));
3187 for (element = cfg_list_first(peers);
3188 element != NULL;
3189 element = cfg_list_next(element))
3190 {
3191 const cfg_obj_t *cpeer = cfg_listelt_value(element);
3192 dns_peer_t *peer;
3193
3194 CHECK(configure_peer(cpeer, mctx, &peer));
3195 dns_peerlist_addpeer(newpeers, peer);
3196 dns_peer_detach(&peer);
3197 }
3198 dns_peerlist_detach(&view->peers);
3199 view->peers = newpeers; /* Transfer ownership. */
3200 }
3201
3202 /*
3203 * Configure the views rrset-order.
3204 */
3205 {
3206 const cfg_obj_t *rrsetorder = NULL;
3207
3208 (void)ns_config_get(maps, "rrset-order", &rrsetorder);
3209 CHECK(dns_order_create(mctx, &order));
3210 for (element = cfg_list_first(rrsetorder);
3211 element != NULL;
3212 element = cfg_list_next(element))
3213 {
3214 const cfg_obj_t *ent = cfg_listelt_value(element);
3215
3216 CHECK(configure_order(order, ent));
3217 }
3218 if (view->order != NULL)
3219 dns_order_detach(&view->order);
3220 dns_order_attach(order, &view->order);
3221 dns_order_detach(&order);
3222 }
3223 /*
3224 * Copy the aclenv object.
3225 */
3226 dns_aclenv_copy(&view->aclenv, &ns_g_server->aclenv);
3227
3228 /*
3229 * Configure the "match-clients" and "match-destinations" ACL.
3230 */
3231 CHECK(configure_view_acl(vconfig, config, "match-clients", NULL, actx,
3232 ns_g_mctx, &view->matchclients));
3233 CHECK(configure_view_acl(vconfig, config, "match-destinations", NULL,
3234 actx, ns_g_mctx, &view->matchdestinations));
3235
3236 /*
3237 * Configure the "match-recursive-only" option.
3238 */
3239 obj = NULL;
3240 (void)ns_config_get(maps, "match-recursive-only", &obj);
3241 if (obj != NULL && cfg_obj_asboolean(obj))
3242 view->matchrecursiveonly = ISC_TRUE;
3243 else
3244 view->matchrecursiveonly = ISC_FALSE;
3245
3246 /*
3247 * Configure other configurable data.
3248 */
3249 obj = NULL;
3250 result = ns_config_get(maps, "recursion", &obj);
3251 INSIST(result == ISC_R_SUCCESS);
3252 view->recursion = cfg_obj_asboolean(obj);
3253
3254 obj = NULL;
3255 result = ns_config_get(maps, "auth-nxdomain", &obj);
3256 INSIST(result == ISC_R_SUCCESS);
3257 view->auth_nxdomain = cfg_obj_asboolean(obj);
3258
3259 obj = NULL;
3260 result = ns_config_get(maps, "minimal-responses", &obj);
3261 INSIST(result == ISC_R_SUCCESS);
3262 view->minimalresponses = cfg_obj_asboolean(obj);
3263
3264 obj = NULL;
3265 result = ns_config_get(maps, "transfer-format", &obj);
3266 INSIST(result == ISC_R_SUCCESS);
3267 str = cfg_obj_asstring(obj);
3268 if (strcasecmp(str, "many-answers") == 0)
3269 view->transfer_format = dns_many_answers;
3270 else if (strcasecmp(str, "one-answer") == 0)
3271 view->transfer_format = dns_one_answer;
3272 else
3273 INSIST(0);
3274
3275 /*
3276 * Set sources where additional data and CNAME/DNAME
3277 * targets for authoritative answers may be found.
3278 */
3279 obj = NULL;
3280 result = ns_config_get(maps, "additional-from-auth", &obj);
3281 INSIST(result == ISC_R_SUCCESS);
3282 view->additionalfromauth = cfg_obj_asboolean(obj);
3283 if (view->recursion && ! view->additionalfromauth) {
3284 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
3285 "'additional-from-auth no' is only supported "
3286 "with 'recursion no'");
3287 view->additionalfromauth = ISC_TRUE;
3288 }
3289
3290 obj = NULL;
3291 result = ns_config_get(maps, "additional-from-cache", &obj);
3292 INSIST(result == ISC_R_SUCCESS);
3293 view->additionalfromcache = cfg_obj_asboolean(obj);
3294 if (view->recursion && ! view->additionalfromcache) {
3295 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
3296 "'additional-from-cache no' is only supported "
3297 "with 'recursion no'");
3298 view->additionalfromcache = ISC_TRUE;
3299 }
3300
3301 /*
3302 * Set "allow-query-cache", "allow-query-cache-on",
3303 * "allow-recursion", and "allow-recursion-on" acls if
3304 * configured in named.conf.
3305 */
3306 CHECK(configure_view_acl(vconfig, config, "allow-query-cache", NULL,
3307 actx, ns_g_mctx, &view->cacheacl));
3308 CHECK(configure_view_acl(vconfig, config, "allow-query-cache-on", NULL,
3309 actx, ns_g_mctx, &view->cacheonacl));
3310 if (view->cacheonacl == NULL)
3311 CHECK(configure_view_acl(NULL, ns_g_config,
3312 "allow-query-cache-on", NULL, actx,
3313 ns_g_mctx, &view->cacheonacl));
3314 if (strcmp(view->name, "_bind") != 0) {
3315 CHECK(configure_view_acl(vconfig, config, "allow-recursion",
3316 NULL, actx, ns_g_mctx,
3317 &view->recursionacl));
3318 CHECK(configure_view_acl(vconfig, config, "allow-recursion-on",
3319 NULL, actx, ns_g_mctx,
3320 &view->recursiononacl));
3321 }
3322
3323 /*
3324 * "allow-query-cache" inherits from "allow-recursion" if set,
3325 * otherwise from "allow-query" if set.
3326 * "allow-recursion" inherits from "allow-query-cache" if set,
3327 * otherwise from "allow-query" if set.
3328 */
3329 if (view->cacheacl == NULL && view->recursionacl != NULL)
3330 dns_acl_attach(view->recursionacl, &view->cacheacl);
3331 /*
3332 * XXXEACH: This call to configure_view_acl() is redundant. We
3333 * are leaving it as it is because we are making a minimal change
3334 * for a patch release. In the future this should be changed to
3335 * dns_acl_attach(view->queryacl, &view->cacheacl).
3336 */
3337 if (view->cacheacl == NULL && view->recursion)
3338 CHECK(configure_view_acl(vconfig, config, "allow-query", NULL,
3339 actx, ns_g_mctx, &view->cacheacl));
3340 if (view->recursion &&
3341 view->recursionacl == NULL && view->cacheacl != NULL)
3342 dns_acl_attach(view->cacheacl, &view->recursionacl);
3343
3344 /*
3345 * Set default "allow-recursion", "allow-recursion-on" and
3346 * "allow-query-cache" acls.
3347 */
3348 if (view->recursionacl == NULL && view->recursion)
3349 CHECK(configure_view_acl(NULL, ns_g_config,
3350 "allow-recursion", NULL,
3351 actx, ns_g_mctx,
3352 &view->recursionacl));
3353 if (view->recursiononacl == NULL && view->recursion)
3354 CHECK(configure_view_acl(NULL, ns_g_config,
3355 "allow-recursion-on", NULL,
3356 actx, ns_g_mctx,
3357 &view->recursiononacl));
3358 if (view->cacheacl == NULL) {
3359 if (view->recursion)
3360 CHECK(configure_view_acl(NULL, ns_g_config,
3361 "allow-query-cache", NULL,
3362 actx, ns_g_mctx,
3363 &view->cacheacl));
3364 else
3365 CHECK(dns_acl_none(mctx, &view->cacheacl));
3366 }
3367
3368 /*
3369 * Ignore case when compressing responses to the specified
3370 * clients. This causes case not always to be preserved,
3371 * and is needed by some broken clients.
3372 */
3373 CHECK(configure_view_acl(vconfig, config, "no-case-compress", NULL,
3374 actx, ns_g_mctx, &view->nocasecompress));
3375
3376 /*
3377 * Filter setting on addresses in the answer section.
3378 */
3379 CHECK(configure_view_acl(vconfig, config, "deny-answer-addresses",
3380 "acl", actx, ns_g_mctx, &view->denyansweracl));
3381 CHECK(configure_view_nametable(vconfig, config, "deny-answer-addresses",
3382 "except-from", ns_g_mctx,
3383 &view->answeracl_exclude));
3384
3385 /*
3386 * Filter setting on names (CNAME/DNAME targets) in the answer section.
3387 */
3388 CHECK(configure_view_nametable(vconfig, config, "deny-answer-aliases",
3389 "name", ns_g_mctx,
3390 &view->denyanswernames));
3391 CHECK(configure_view_nametable(vconfig, config, "deny-answer-aliases",
3392 "except-from", ns_g_mctx,
3393 &view->answernames_exclude));
3394
3395 /*
3396 * Configure sortlist, if set
3397 */
3398 CHECK(configure_view_sortlist(vconfig, config, actx, ns_g_mctx,
3399 &view->sortlist));
3400
3401 /*
3402 * Configure default allow-transfer, allow-notify, allow-update
3403 * and allow-update-forwarding ACLs, if set, so they can be
3404 * inherited by zones.
3405 */
3406 if (view->notifyacl == NULL)
3407 CHECK(configure_view_acl(NULL, ns_g_config,
3408 "allow-notify", NULL, actx,
3409 ns_g_mctx, &view->notifyacl));
3410 if (view->transferacl == NULL)
3411 CHECK(configure_view_acl(NULL, ns_g_config,
3412 "allow-transfer", NULL, actx,
3413 ns_g_mctx, &view->transferacl));
3414 if (view->updateacl == NULL)
3415 CHECK(configure_view_acl(NULL, ns_g_config,
3416 "allow-update", NULL, actx,
3417 ns_g_mctx, &view->updateacl));
3418 if (view->upfwdacl == NULL)
3419 CHECK(configure_view_acl(NULL, ns_g_config,
3420 "allow-update-forwarding", NULL, actx,
3421 ns_g_mctx, &view->upfwdacl));
3422
3423 obj = NULL;
3424 result = ns_config_get(maps, "provide-ixfr", &obj);
3425 INSIST(result == ISC_R_SUCCESS);
3426 view->provideixfr = cfg_obj_asboolean(obj);
3427
3428 obj = NULL;
3429 result = ns_config_get(maps, "request-nsid", &obj);
3430 INSIST(result == ISC_R_SUCCESS);
3431 view->requestnsid = cfg_obj_asboolean(obj);
3432
3433 #ifdef ISC_PLATFORM_USESIT
3434 obj = NULL;
3435 result = ns_config_get(maps, "request-sit", &obj);
3436 INSIST(result == ISC_R_SUCCESS);
3437 view->requestsit = cfg_obj_asboolean(obj);
3438 #endif
3439
3440 obj = NULL;
3441 result = ns_config_get(maps, "max-clients-per-query", &obj);
3442 INSIST(result == ISC_R_SUCCESS);
3443 max_clients_per_query = cfg_obj_asuint32(obj);
3444
3445 obj = NULL;
3446 result = ns_config_get(maps, "clients-per-query", &obj);
3447 INSIST(result == ISC_R_SUCCESS);
3448 dns_resolver_setclientsperquery(view->resolver,
3449 cfg_obj_asuint32(obj),
3450 max_clients_per_query);
3451
3452 obj = NULL;
3453 result = ns_config_get(maps, "max-recursion-depth", &obj);
3454 INSIST(result == ISC_R_SUCCESS);
3455 dns_resolver_setmaxdepth(view->resolver, cfg_obj_asuint32(obj));
3456
3457 obj = NULL;
3458 result = ns_config_get(maps, "max-recursion-queries", &obj);
3459 INSIST(result == ISC_R_SUCCESS);
3460 dns_resolver_setmaxqueries(view->resolver, cfg_obj_asuint32(obj));
3461
3462 #ifdef ALLOW_FILTER_AAAA
3463 obj = NULL;
3464 result = ns_config_get(maps, "filter-aaaa-on-v4", &obj);
3465 INSIST(result == ISC_R_SUCCESS);
3466 if (cfg_obj_isboolean(obj)) {
3467 if (cfg_obj_asboolean(obj))
3468 view->v4_aaaa = dns_aaaa_filter;
3469 else
3470 view->v4_aaaa = dns_aaaa_ok;
3471 } else {
3472 const char *v4_aaaastr = cfg_obj_asstring(obj);
3473 if (strcasecmp(v4_aaaastr, "break-dnssec") == 0)
3474 view->v4_aaaa = dns_aaaa_break_dnssec;
3475 else
3476 INSIST(0);
3477 }
3478
3479 obj = NULL;
3480 result = ns_config_get(maps, "filter-aaaa-on-v6", &obj);
3481 INSIST(result == ISC_R_SUCCESS);
3482 if (cfg_obj_isboolean(obj)) {
3483 if (cfg_obj_asboolean(obj))
3484 view->v6_aaaa = dns_aaaa_filter;
3485 else
3486 view->v6_aaaa = dns_aaaa_ok;
3487 } else {
3488 const char *v6_aaaastr = cfg_obj_asstring(obj);
3489 if (strcasecmp(v6_aaaastr, "break-dnssec") == 0)
3490 view->v6_aaaa = dns_aaaa_break_dnssec;
3491 else
3492 INSIST(0);
3493 }
3494
3495 CHECK(configure_view_acl(vconfig, config, "filter-aaaa", NULL,
3496 actx, ns_g_mctx, &view->aaaa_acl));
3497 #endif
3498 obj = NULL;
3499 result = ns_config_get(maps, "prefetch", &obj);
3500 if (result == ISC_R_SUCCESS) {
3501 const cfg_obj_t *trigger, *eligible;
3502
3503 trigger = cfg_tuple_get(obj, "trigger");
3504 view->prefetch_trigger = cfg_obj_asuint32(trigger);
3505 if (view->prefetch_trigger > 10)
3506 view->prefetch_trigger = 10;
3507 eligible = cfg_tuple_get(obj, "eligible");
3508 if (cfg_obj_isvoid(eligible)) {
3509 int m;
3510 for (m = 1; maps[m] != NULL; m++) {
3511 obj = NULL;
3512 result = ns_config_get(&maps[m],
3513 "prefetch", &obj);
3514 INSIST(result == ISC_R_SUCCESS);
3515 eligible = cfg_tuple_get(obj, "eligible");
3516 if (cfg_obj_isuint32(eligible))
3517 break;
3518 }
3519 INSIST(cfg_obj_isuint32(eligible));
3520 }
3521 view->prefetch_eligible = cfg_obj_asuint32(eligible);
3522 if (view->prefetch_eligible < view->prefetch_trigger + 6)
3523 view->prefetch_eligible = view->prefetch_trigger + 6;
3524 }
3525
3526 obj = NULL;
3527 result = ns_config_get(maps, "dnssec-enable", &obj);
3528 INSIST(result == ISC_R_SUCCESS);
3529 view->enablednssec = cfg_obj_asboolean(obj);
3530
3531 obj = NULL;
3532 result = ns_config_get(optionmaps, "dnssec-lookaside", &obj);
3533 if (result == ISC_R_SUCCESS) {
3534 /* If set to "auto", use the version from the defaults */
3535 const cfg_obj_t *dlvobj;
3536 const char *dom;
3537 dlvobj = cfg_listelt_value(cfg_list_first(obj));
3538 dom = cfg_obj_asstring(cfg_tuple_get(dlvobj, "domain"));
3539 if (cfg_obj_isvoid(cfg_tuple_get(dlvobj, "trust-anchor"))) {
3540 /* If "no", skip; if "auto", use global default */
3541 if (!strcasecmp(dom, "no"))
3542 result = ISC_R_NOTFOUND;
3543 else if (!strcasecmp(dom, "auto")) {
3544 auto_dlv = ISC_TRUE;
3545 obj = NULL;
3546 result = cfg_map_get(ns_g_defaults,
3547 "dnssec-lookaside", &obj);
3548 }
3549 }
3550 }
3551
3552 if (result == ISC_R_SUCCESS) {
3553 for (element = cfg_list_first(obj);
3554 element != NULL;
3555 element = cfg_list_next(element))
3556 {
3557 dns_name_t *dlv;
3558
3559 obj = cfg_listelt_value(element);
3560 obj = cfg_tuple_get(obj, "trust-anchor");
3561 dlv = dns_fixedname_name(&view->dlv_fixed);
3562 CHECK(dns_name_fromstring(dlv, cfg_obj_asstring(obj),
3563 DNS_NAME_DOWNCASE, NULL));
3564 view->dlv = dns_fixedname_name(&view->dlv_fixed);
3565 }
3566 } else
3567 view->dlv = NULL;
3568
3569 /*
3570 * For now, there is only one kind of trusted keys, the
3571 * "security roots".
3572 */
3573 CHECK(configure_view_dnsseckeys(view, vconfig, config, bindkeys,
3574 auto_dlv, auto_root, mctx));
3575 dns_resolver_resetmustbesecure(view->resolver);
3576 obj = NULL;
3577 result = ns_config_get(maps, "dnssec-must-be-secure", &obj);
3578 if (result == ISC_R_SUCCESS)
3579 CHECK(mustbesecure(obj, view->resolver));
3580
3581 obj = NULL;
3582 result = ns_config_get(maps, "preferred-glue", &obj);
3583 if (result == ISC_R_SUCCESS) {
3584 str = cfg_obj_asstring(obj);
3585 if (strcasecmp(str, "a") == 0)
3586 view->preferred_glue = dns_rdatatype_a;
3587 else if (strcasecmp(str, "aaaa") == 0)
3588 view->preferred_glue = dns_rdatatype_aaaa;
3589 else
3590 view->preferred_glue = 0;
3591 } else
3592 view->preferred_glue = 0;
3593
3594 obj = NULL;
3595 result = ns_config_get(maps, "root-delegation-only", &obj);
3596 if (result == ISC_R_SUCCESS) {
3597 dns_fixedname_t fixed;
3598 dns_name_t *name;
3599 const cfg_obj_t *exclude;
3600
3601 dns_view_setrootdelonly(view, ISC_TRUE);
3602
3603 dns_fixedname_init(&fixed);
3604 name = dns_fixedname_name(&fixed);
3605 for (element = cfg_list_first(obj);
3606 element != NULL;
3607 element = cfg_list_next(element)) {
3608 exclude = cfg_listelt_value(element);
3609 CHECK(dns_name_fromstring(name,
3610 cfg_obj_asstring(exclude),
3611 0, NULL));
3612 CHECK(dns_view_excludedelegationonly(view, name));
3613 }
3614 } else
3615 dns_view_setrootdelonly(view, ISC_FALSE);
3616
3617 /*
3618 * Setup automatic empty zones. If recursion is off then
3619 * they are disabled by default.
3620 */
3621 obj = NULL;
3622 (void)ns_config_get(maps, "empty-zones-enable", &obj);
3623 (void)ns_config_get(maps, "disable-empty-zone", &disablelist);
3624 if (obj == NULL && disablelist == NULL &&
3625 view->rdclass == dns_rdataclass_in) {
3626 empty_zones_enable = view->recursion;
3627 } else if (view->rdclass == dns_rdataclass_in) {
3628 if (obj != NULL)
3629 empty_zones_enable = cfg_obj_asboolean(obj);
3630 else
3631 empty_zones_enable = view->recursion;
3632 } else {
3633 empty_zones_enable = ISC_FALSE;
3634 }
3635 if (empty_zones_enable && !lwresd_g_useresolvconf) {
3636 const char *empty;
3637 int empty_zone = 0;
3638 dns_fixedname_t fixed;
3639 dns_name_t *name;
3640 isc_buffer_t buffer;
3641 char server[DNS_NAME_FORMATSIZE + 1];
3642 char contact[DNS_NAME_FORMATSIZE + 1];
3643 const char *empty_dbtype[4] =
3644 { "_builtin", "empty", NULL, NULL };
3645 int empty_dbtypec = 4;
3646 dns_zonestat_level_t statlevel;
3647
3648 dns_fixedname_init(&fixed);
3649 name = dns_fixedname_name(&fixed);
3650
3651 obj = NULL;
3652 result = ns_config_get(maps, "empty-server", &obj);
3653 if (result == ISC_R_SUCCESS) {
3654 CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj),
3655 0, NULL));
3656 isc_buffer_init(&buffer, server, sizeof(server) - 1);
3657 CHECK(dns_name_totext(name, ISC_FALSE, &buffer));
3658 server[isc_buffer_usedlength(&buffer)] = 0;
3659 empty_dbtype[2] = server;
3660 } else
3661 empty_dbtype[2] = "@";
3662
3663 obj = NULL;
3664 result = ns_config_get(maps, "empty-contact", &obj);
3665 if (result == ISC_R_SUCCESS) {
3666 CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj),
3667 0, NULL));
3668 isc_buffer_init(&buffer, contact, sizeof(contact) - 1);
3669 CHECK(dns_name_totext(name, ISC_FALSE, &buffer));
3670 contact[isc_buffer_usedlength(&buffer)] = 0;
3671 empty_dbtype[3] = contact;
3672 } else
3673 empty_dbtype[3] = ".";
3674
3675 obj = NULL;
3676 result = ns_config_get(maps, "zone-statistics", &obj);
3677 INSIST(result == ISC_R_SUCCESS);
3678 if (cfg_obj_isboolean(obj)) {
3679 if (cfg_obj_asboolean(obj))
3680 statlevel = dns_zonestat_full;
3681 else
3682 statlevel = dns_zonestat_none;
3683 } else {
3684 const char *levelstr = cfg_obj_asstring(obj);
3685 if (strcasecmp(levelstr, "full") == 0)
3686 statlevel = dns_zonestat_full;
3687 else if (strcasecmp(levelstr, "terse") == 0)
3688 statlevel = dns_zonestat_terse;
3689 else if (strcasecmp(levelstr, "none") == 0)
3690 statlevel = dns_zonestat_none;
3691 else
3692 INSIST(0);
3693 }
3694
3695 for (empty = empty_zones[empty_zone];
3696 empty != NULL;
3697 empty = empty_zones[++empty_zone])
3698 {
3699 dns_forwarders_t *dnsforwarders = NULL;
3700
3701 /*
3702 * Look for zone on drop list.
3703 */
3704 CHECK(dns_name_fromstring(name, empty, 0, NULL));
3705 if (disablelist != NULL &&
3706 on_disable_list(disablelist, name))
3707 continue;
3708
3709 /*
3710 * This zone already exists.
3711 */
3712 (void)dns_view_findzone(view, name, &zone);
3713 if (zone != NULL) {
3714 dns_zone_detach(&zone);
3715 continue;
3716 }
3717
3718 /*
3719 * If we would forward this name don't add a
3720 * empty zone for it.
3721 */
3722 result = dns_fwdtable_find(view->fwdtable, name,
3723 &dnsforwarders);
3724 if (result == ISC_R_SUCCESS &&
3725 dnsforwarders->fwdpolicy == dns_fwdpolicy_only)
3726 continue;
3727
3728 /*
3729 * See if we can re-use a existing zone.
3730 */
3731 result = dns_viewlist_find(&ns_g_server->viewlist,
3732 view->name, view->rdclass,
3733 &pview);
3734 if (result != ISC_R_NOTFOUND &&
3735 result != ISC_R_SUCCESS)
3736 goto cleanup;
3737
3738 if (pview != NULL) {
3739 (void)dns_view_findzone(pview, name, &zone);
3740 dns_view_detach(&pview);
3741 }
3742
3743 CHECK(create_empty_zone(zone, name, view, zonelist,
3744 empty_dbtype, empty_dbtypec,
3745 statlevel));
3746 if (zone != NULL)
3747 dns_zone_detach(&zone);
3748 }
3749 }
3750
3751 obj = NULL;
3752 result = ns_config_get(maps, "rate-limit", &obj);
3753 if (result == ISC_R_SUCCESS) {
3754 result = configure_rrl(view, config, obj);
3755 if (result != ISC_R_SUCCESS)
3756 goto cleanup;
3757 }
3758
3759 result = ISC_R_SUCCESS;
3760
3761 cleanup:
3762 if (clients != NULL)
3763 dns_acl_detach(&clients);
3764 if (mapped != NULL)
3765 dns_acl_detach(&mapped);
3766 if (excluded != NULL)
3767 dns_acl_detach(&excluded);
3768 if (ring != NULL)
3769 dns_tsigkeyring_detach(&ring);
3770 if (zone != NULL)
3771 dns_zone_detach(&zone);
3772 if (dispatch4 != NULL)
3773 dns_dispatch_detach(&dispatch4);
3774 if (dispatch6 != NULL)
3775 dns_dispatch_detach(&dispatch6);
3776 if (resstats != NULL)
3777 isc_stats_detach(&resstats);
3778 if (resquerystats != NULL)
3779 dns_stats_detach(&resquerystats);
3780 if (order != NULL)
3781 dns_order_detach(&order);
3782 if (cmctx != NULL)
3783 isc_mem_detach(&cmctx);
3784 if (hmctx != NULL)
3785 isc_mem_detach(&hmctx);
3786
3787 if (cache != NULL)
3788 dns_cache_detach(&cache);
3789
3790 return (result);
3791 }
3792
3793 static isc_result_t
3794 configure_hints(dns_view_t *view, const char *filename) {
3795 isc_result_t result;
3796 dns_db_t *db;
3797
3798 db = NULL;
3799 result = dns_rootns_create(view->mctx, view->rdclass, filename, &db);
3800 if (result == ISC_R_SUCCESS) {
3801 dns_view_sethints(view, db);
3802 dns_db_detach(&db);
3803 }
3804
3805 return (result);
3806 }
3807
3808 static isc_result_t
3809 configure_alternates(const cfg_obj_t *config, dns_view_t *view,
3810 const cfg_obj_t *alternates)
3811 {
3812 const cfg_obj_t *portobj;
3813 const cfg_obj_t *addresses;
3814 const cfg_listelt_t *element;
3815 isc_result_t result = ISC_R_SUCCESS;
3816 in_port_t port;
3817
3818 /*
3819 * Determine which port to send requests to.
3820 */
3821 if (ns_g_lwresdonly && ns_g_port != 0)
3822 port = ns_g_port;
3823 else
3824 CHECKM(ns_config_getport(config, &port), "port");
3825
3826 if (alternates != NULL) {
3827 portobj = cfg_tuple_get(alternates, "port");
3828 if (cfg_obj_isuint32(portobj)) {
3829 isc_uint32_t val = cfg_obj_asuint32(portobj);
3830 if (val > ISC_UINT16_MAX) {
3831 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
3832 "port '%u' out of range", val);
3833 return (ISC_R_RANGE);
3834 }
3835 port = (in_port_t) val;
3836 }
3837 }
3838
3839 addresses = NULL;
3840 if (alternates != NULL)
3841 addresses = cfg_tuple_get(alternates, "addresses");
3842
3843 for (element = cfg_list_first(addresses);
3844 element != NULL;
3845 element = cfg_list_next(element))
3846 {
3847 const cfg_obj_t *alternate = cfg_listelt_value(element);
3848 isc_sockaddr_t sa;
3849
3850 if (!cfg_obj_issockaddr(alternate)) {
3851 dns_fixedname_t fixed;
3852 dns_name_t *name;
3853 const char *str = cfg_obj_asstring(cfg_tuple_get(
3854 alternate, "name"));
3855 isc_buffer_t buffer;
3856 in_port_t myport = port;
3857
3858 isc_buffer_constinit(&buffer, str, strlen(str));
3859 isc_buffer_add(&buffer, strlen(str));
3860 dns_fixedname_init(&fixed);
3861 name = dns_fixedname_name(&fixed);
3862 CHECK(dns_name_fromtext(name, &buffer, dns_rootname, 0,
3863 NULL));
3864
3865 portobj = cfg_tuple_get(alternate, "port");
3866 if (cfg_obj_isuint32(portobj)) {
3867 isc_uint32_t val = cfg_obj_asuint32(portobj);
3868 if (val > ISC_UINT16_MAX) {
3869 cfg_obj_log(portobj, ns_g_lctx,
3870 ISC_LOG_ERROR,
3871 "port '%u' out of range",
3872 val);
3873 return (ISC_R_RANGE);
3874 }
3875 myport = (in_port_t) val;
3876 }
3877 CHECK(dns_resolver_addalternate(view->resolver, NULL,
3878 name, myport));
3879 continue;
3880 }
3881
3882 sa = *cfg_obj_assockaddr(alternate);
3883 if (isc_sockaddr_getport(&sa) == 0)
3884 isc_sockaddr_setport(&sa, port);
3885 CHECK(dns_resolver_addalternate(view->resolver, &sa,
3886 NULL, 0));
3887 }
3888
3889 cleanup:
3890 return (result);
3891 }
3892
3893 static isc_result_t
3894 configure_forward(const cfg_obj_t *config, dns_view_t *view, dns_name_t *origin,
3895 const cfg_obj_t *forwarders, const cfg_obj_t *forwardtype)
3896 {
3897 const cfg_obj_t *portobj, *dscpobj;
3898 const cfg_obj_t *faddresses;
3899 const cfg_listelt_t *element;
3900 dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none;
3901 dns_forwarderlist_t fwdlist;
3902 dns_forwarder_t *fwd;
3903 isc_result_t result;
3904 in_port_t port;
3905 isc_dscp_t dscp = -1;
3906
3907 ISC_LIST_INIT(fwdlist);
3908
3909 /*
3910 * Determine which port to send forwarded requests to.
3911 */
3912 if (ns_g_lwresdonly && ns_g_port != 0)
3913 port = ns_g_port;
3914 else
3915 CHECKM(ns_config_getport(config, &port), "port");
3916
3917 if (forwarders != NULL) {
3918 portobj = cfg_tuple_get(forwarders, "port");
3919 if (cfg_obj_isuint32(portobj)) {
3920 isc_uint32_t val = cfg_obj_asuint32(portobj);
3921 if (val > ISC_UINT16_MAX) {
3922 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
3923 "port '%u' out of range", val);
3924 return (ISC_R_RANGE);
3925 }
3926 port = (in_port_t) val;
3927 }
3928 }
3929
3930 /*
3931 * DSCP value for forwarded requests.
3932 */
3933 dscp = ns_g_dscp;
3934 if (forwarders != NULL) {
3935 dscpobj = cfg_tuple_get(forwarders, "dscp");
3936 if (cfg_obj_isuint32(dscpobj)) {
3937 if (cfg_obj_asuint32(dscpobj) > 63) {
3938 cfg_obj_log(dscpobj, ns_g_lctx, ISC_LOG_ERROR,
3939 "dscp value '%u' is out of range",
3940 cfg_obj_asuint32(dscpobj));
3941 return (ISC_R_RANGE);
3942 }
3943 dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
3944 }
3945 }
3946
3947 faddresses = NULL;
3948 if (forwarders != NULL)
3949 faddresses = cfg_tuple_get(forwarders, "addresses");
3950
3951 for (element = cfg_list_first(faddresses);
3952 element != NULL;
3953 element = cfg_list_next(element))
3954 {
3955 const cfg_obj_t *forwarder = cfg_listelt_value(element);
3956 fwd = isc_mem_get(view->mctx, sizeof(dns_forwarder_t));
3957 if (fwd == NULL) {
3958 result = ISC_R_NOMEMORY;
3959 goto cleanup;
3960 }
3961 fwd->addr = *cfg_obj_assockaddr(forwarder);
3962 if (isc_sockaddr_getport(&fwd->addr) == 0)
3963 isc_sockaddr_setport(&fwd->addr, port);
3964 fwd->dscp = cfg_obj_getdscp(forwarder);
3965 if (fwd->dscp == -1)
3966 fwd->dscp = dscp;
3967 ISC_LINK_INIT(fwd, link);
3968 ISC_LIST_APPEND(fwdlist, fwd, link);
3969 }
3970
3971 if (ISC_LIST_EMPTY(fwdlist)) {
3972 if (forwardtype != NULL)
3973 cfg_obj_log(forwarders, ns_g_lctx, ISC_LOG_WARNING,
3974 "no forwarders seen; disabling "
3975 "forwarding");
3976 fwdpolicy = dns_fwdpolicy_none;
3977 } else {
3978 if (forwardtype == NULL)
3979 fwdpolicy = dns_fwdpolicy_first;
3980 else {
3981 const char *forwardstr = cfg_obj_asstring(forwardtype);
3982 if (strcasecmp(forwardstr, "first") == 0)
3983 fwdpolicy = dns_fwdpolicy_first;
3984 else if (strcasecmp(forwardstr, "only") == 0)
3985 fwdpolicy = dns_fwdpolicy_only;
3986 else
3987 INSIST(0);
3988 }
3989 }
3990
3991 result = dns_fwdtable_addfwd(view->fwdtable, origin, &fwdlist,
3992 fwdpolicy);
3993 if (result != ISC_R_SUCCESS) {
3994 char namebuf[DNS_NAME_FORMATSIZE];
3995 dns_name_format(origin, namebuf, sizeof(namebuf));
3996 cfg_obj_log(forwarders, ns_g_lctx, ISC_LOG_WARNING,
3997 "could not set up forwarding for domain '%s': %s",
3998 namebuf, isc_result_totext(result));
3999 goto cleanup;
4000 }
4001
4002 result = ISC_R_SUCCESS;
4003
4004 cleanup:
4005
4006 while (!ISC_LIST_EMPTY(fwdlist)) {
4007 fwd = ISC_LIST_HEAD(fwdlist);
4008 ISC_LIST_UNLINK(fwdlist, fwd, link);
4009 isc_mem_put(view->mctx, fwd, sizeof(dns_forwarder_t));
4010 }
4011
4012 return (result);
4013 }
4014
4015 static isc_result_t
4016 get_viewinfo(const cfg_obj_t *vconfig, const char **namep,
4017 dns_rdataclass_t *classp)
4018 {
4019 isc_result_t result = ISC_R_SUCCESS;
4020 const char *viewname;
4021 dns_rdataclass_t viewclass;
4022
4023 REQUIRE(namep != NULL && *namep == NULL);
4024 REQUIRE(classp != NULL);
4025
4026 if (vconfig != NULL) {
4027 const cfg_obj_t *classobj = NULL;
4028
4029 viewname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name"));
4030 classobj = cfg_tuple_get(vconfig, "class");
4031 result = ns_config_getclass(classobj, dns_rdataclass_in,
4032 &viewclass);
4033 } else {
4034 viewname = "_default";
4035 viewclass = dns_rdataclass_in;
4036 }
4037
4038 *namep = viewname;
4039 *classp = viewclass;
4040
4041 return (result);
4042 }
4043
4044 /*
4045 * Find a view based on its configuration info and attach to it.
4046 *
4047 * If 'vconfig' is NULL, attach to the default view.
4048 */
4049 static isc_result_t
4050 find_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist,
4051 dns_view_t **viewp)
4052 {
4053 isc_result_t result;
4054 const char *viewname = NULL;
4055 dns_rdataclass_t viewclass;
4056 dns_view_t *view = NULL;
4057
4058 result = get_viewinfo(vconfig, &viewname, &viewclass);
4059 if (result != ISC_R_SUCCESS)
4060 return (result);
4061
4062 result = dns_viewlist_find(viewlist, viewname, viewclass, &view);
4063 if (result != ISC_R_SUCCESS)
4064 return (result);
4065
4066 *viewp = view;
4067 return (ISC_R_SUCCESS);
4068 }
4069
4070 /*
4071 * Create a new view and add it to the list.
4072 *
4073 * If 'vconfig' is NULL, create the default view.
4074 *
4075 * The view created is attached to '*viewp'.
4076 */
4077 static isc_result_t
4078 create_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist,
4079 dns_view_t **viewp)
4080 {
4081 isc_result_t result;
4082 const char *viewname = NULL;
4083 dns_rdataclass_t viewclass;
4084 dns_view_t *view = NULL;
4085
4086 result = get_viewinfo(vconfig, &viewname, &viewclass);
4087 if (result != ISC_R_SUCCESS)
4088 return (result);
4089
4090 result = dns_viewlist_find(viewlist, viewname, viewclass, &view);
4091 if (result == ISC_R_SUCCESS)
4092 return (ISC_R_EXISTS);
4093 if (result != ISC_R_NOTFOUND)
4094 return (result);
4095 INSIST(view == NULL);
4096
4097 result = dns_view_create(ns_g_mctx, viewclass, viewname, &view);
4098 if (result != ISC_R_SUCCESS)
4099 return (result);
4100
4101 result = isc_entropy_getdata(ns_g_entropy, view->secret,
4102 sizeof(view->secret), NULL, 0);
4103 if (result != ISC_R_SUCCESS) {
4104 dns_view_detach(&view);
4105 return (result);
4106 }
4107
4108 #ifdef HAVE_GEOIP
4109 view->aclenv.geoip = ns_g_geoip;
4110 #endif
4111
4112 ISC_LIST_APPEND(*viewlist, view, link);
4113 dns_view_attach(view, viewp);
4114 return (ISC_R_SUCCESS);
4115 }
4116
4117 /*
4118 * Configure or reconfigure a zone.
4119 */
4120 static isc_result_t
4121 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
4122 const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
4123 dns_viewlist_t *viewlist, cfg_aclconfctx_t *aclconf,
4124 isc_boolean_t added, isc_boolean_t old_rpz_ok)
4125 {
4126 dns_view_t *pview = NULL; /* Production view */
4127 dns_zone_t *zone = NULL; /* New or reused zone */
4128 dns_zone_t *raw = NULL; /* New or reused raw zone */
4129 dns_zone_t *dupzone = NULL;
4130 const cfg_obj_t *options = NULL;
4131 const cfg_obj_t *zoptions = NULL;
4132 const cfg_obj_t *typeobj = NULL;
4133 const cfg_obj_t *forwarders = NULL;
4134 const cfg_obj_t *forwardtype = NULL;
4135 const cfg_obj_t *only = NULL;
4136 const cfg_obj_t *signing = NULL;
4137 const cfg_obj_t *viewobj = NULL;
4138 isc_result_t result;
4139 isc_result_t tresult;
4140 isc_buffer_t buffer;
4141 dns_fixedname_t fixorigin;
4142 dns_name_t *origin;
4143 const char *zname;
4144 dns_rdataclass_t zclass;
4145 const char *ztypestr;
4146 dns_rpz_num_t rpz_num;
4147
4148 options = NULL;
4149 (void)cfg_map_get(config, "options", &options);
4150
4151 zoptions = cfg_tuple_get(zconfig, "options");
4152
4153 /*
4154 * Get the zone origin as a dns_name_t.
4155 */
4156 zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
4157 isc_buffer_constinit(&buffer, zname, strlen(zname));
4158 isc_buffer_add(&buffer, strlen(zname));
4159 dns_fixedname_init(&fixorigin);
4160 CHECK(dns_name_fromtext(dns_fixedname_name(&fixorigin),
4161 &buffer, dns_rootname, 0, NULL));
4162 origin = dns_fixedname_name(&fixorigin);
4163
4164 CHECK(ns_config_getclass(cfg_tuple_get(zconfig, "class"),
4165 view->rdclass, &zclass));
4166 if (zclass != view->rdclass) {
4167 const char *vname = NULL;
4168 if (vconfig != NULL)
4169 vname = cfg_obj_asstring(cfg_tuple_get(vconfig,
4170 "name"));
4171 else
4172 vname = "<default view>";
4173
4174 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4175 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
4176 "zone '%s': wrong class for view '%s'",
4177 zname, vname);
4178 result = ISC_R_FAILURE;
4179 goto cleanup;
4180 }
4181
4182 (void)cfg_map_get(zoptions, "in-view", &viewobj);
4183 if (viewobj != NULL) {
4184 const char *inview = cfg_obj_asstring(viewobj);
4185 dns_view_t *otherview = NULL;
4186
4187 if (viewlist == NULL) {
4188 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
4189 "'in-view' option is not permitted in "
4190 "dynamically added zones");
4191 result = ISC_R_FAILURE;
4192 goto cleanup;
4193 }
4194
4195 result = dns_viewlist_find(viewlist, inview, view->rdclass,
4196 &otherview);
4197 if (result != ISC_R_SUCCESS) {
4198 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
4199 "view '%s' is not yet defined.", inview);
4200 result = ISC_R_FAILURE;
4201 goto cleanup;
4202 }
4203
4204 result = dns_view_findzone(otherview, origin, &zone);
4205 dns_view_detach(&otherview);
4206 if (result != ISC_R_SUCCESS) {
4207 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
4208 "zone '%s' not defined in view '%s'",
4209 zname, inview);
4210 result = ISC_R_FAILURE;
4211 goto cleanup;
4212 }
4213
4214 CHECK(dns_view_addzone(view, zone));
4215 dns_zone_detach(&zone);
4216
4217 /*
4218 * If the zone contains a 'forwarders' statement, configure
4219 * selective forwarding. Note: this is not inherited from the
4220 * other view.
4221 */
4222 forwarders = NULL;
4223 result = cfg_map_get(zoptions, "forwarders", &forwarders);
4224 if (result == ISC_R_SUCCESS) {
4225 forwardtype = NULL;
4226 (void)cfg_map_get(zoptions, "forward", &forwardtype);
4227 CHECK(configure_forward(config, view, origin,
4228 forwarders, forwardtype));
4229 }
4230 result = ISC_R_SUCCESS;
4231 goto cleanup;
4232 }
4233
4234 (void)cfg_map_get(zoptions, "type", &typeobj);
4235 if (typeobj == NULL) {
4236 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
4237 "zone '%s' 'type' not specified", zname);
4238 result = ISC_R_FAILURE;
4239 goto cleanup;
4240 }
4241 ztypestr = cfg_obj_asstring(typeobj);
4242
4243 /*
4244 * "hints zones" aren't zones. If we've got one,
4245 * configure it and return.
4246 */
4247 if (strcasecmp(ztypestr, "hint") == 0) {
4248 const cfg_obj_t *fileobj = NULL;
4249 if (cfg_map_get(zoptions, "file", &fileobj) != ISC_R_SUCCESS) {
4250 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4251 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
4252 "zone '%s': 'file' not specified",
4253 zname);
4254 result = ISC_R_FAILURE;
4255 goto cleanup;
4256 }
4257 if (dns_name_equal(origin, dns_rootname)) {
4258 const char *hintsfile = cfg_obj_asstring(fileobj);
4259
4260 CHECK(configure_hints(view, hintsfile));
4261
4262 /*
4263 * Hint zones may also refer to delegation only points.
4264 */
4265 only = NULL;
4266 tresult = cfg_map_get(zoptions, "delegation-only",
4267 &only);
4268 if (tresult == ISC_R_SUCCESS && cfg_obj_asboolean(only))
4269 CHECK(dns_view_adddelegationonly(view, origin));
4270 } else {
4271 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4272 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
4273 "ignoring non-root hint zone '%s'",
4274 zname);
4275 result = ISC_R_SUCCESS;
4276 }
4277 /* Skip ordinary zone processing. */
4278 goto cleanup;
4279 }
4280
4281 /*
4282 * "forward zones" aren't zones either. Translate this syntax into
4283 * the appropriate selective forwarding configuration and return.
4284 */
4285 if (strcasecmp(ztypestr, "forward") == 0) {
4286 forwardtype = NULL;
4287 forwarders = NULL;
4288
4289 (void)cfg_map_get(zoptions, "forward", &forwardtype);
4290 (void)cfg_map_get(zoptions, "forwarders", &forwarders);
4291 CHECK(configure_forward(config, view, origin, forwarders,
4292 forwardtype));
4293
4294 /*
4295 * Forward zones may also set delegation only.
4296 */
4297 only = NULL;
4298 tresult = cfg_map_get(zoptions, "delegation-only", &only);
4299 if (tresult == ISC_R_SUCCESS && cfg_obj_asboolean(only))
4300 CHECK(dns_view_adddelegationonly(view, origin));
4301 goto cleanup;
4302 }
4303
4304 /*
4305 * "delegation-only zones" aren't zones either.
4306 */
4307 if (strcasecmp(ztypestr, "delegation-only") == 0) {
4308 result = dns_view_adddelegationonly(view, origin);
4309 goto cleanup;
4310 }
4311
4312 /*
4313 * Redirect zones only require minimal configuration.
4314 */
4315 if (strcasecmp(ztypestr, "redirect") == 0) {
4316 if (view->redirect != NULL) {
4317 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
4318 "redirect zone already exists");
4319 result = ISC_R_EXISTS;
4320 goto cleanup;
4321 }
4322 result = dns_viewlist_find(viewlist, view->name,
4323 view->rdclass, &pview);
4324 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
4325 goto cleanup;
4326 if (pview != NULL && pview->redirect != NULL) {
4327 dns_zone_attach(pview->redirect, &zone);
4328 dns_zone_setview(zone, view);
4329 } else {
4330 CHECK(dns_zonemgr_createzone(ns_g_server->zonemgr,
4331 &zone));
4332 CHECK(dns_zone_setorigin(zone, origin));
4333 dns_zone_setview(zone, view);
4334 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr,
4335 zone));
4336 dns_zone_setstats(zone, ns_g_server->zonestats);
4337 }
4338 CHECK(ns_zone_configure(config, vconfig, zconfig, aclconf,
4339 zone, NULL));
4340 dns_zone_attach(zone, &view->redirect);
4341 goto cleanup;
4342 }
4343
4344 /*
4345 * Check for duplicates in the new zone table.
4346 */
4347 result = dns_view_findzone(view, origin, &dupzone);
4348 if (result == ISC_R_SUCCESS) {
4349 /*
4350 * We already have this zone!
4351 */
4352 cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
4353 "zone '%s' already exists", zname);
4354 dns_zone_detach(&dupzone);
4355 result = ISC_R_EXISTS;
4356 goto cleanup;
4357 }
4358 INSIST(dupzone == NULL);
4359
4360 /*
4361 * Note whether this is a response policy zone and which one if so.
4362 */
4363 for (rpz_num = 0; ; ++rpz_num) {
4364 if (view->rpzs == NULL || rpz_num >= view->rpzs->p.num_zones) {
4365 rpz_num = DNS_RPZ_INVALID_NUM;
4366 break;
4367 }
4368 if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin, origin))
4369 break;
4370 }
4371
4372 /*
4373 * See if we can reuse an existing zone. This is
4374 * only possible if all of these are true:
4375 * - The zone's view exists
4376 * - A zone with the right name exists in the view
4377 * - The zone is compatible with the config
4378 * options (e.g., an existing master zone cannot
4379 * be reused if the options specify a slave zone)
4380 * - The zone was not and is still not a response policy zone
4381 * or the zone is a policy zone with an unchanged number
4382 * and we are using the old policy zone summary data.
4383 */
4384 result = dns_viewlist_find(&ns_g_server->viewlist, view->name,
4385 view->rdclass, &pview);
4386 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
4387 goto cleanup;
4388 if (pview != NULL)
4389 result = dns_view_findzone(pview, origin, &zone);
4390 if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
4391 goto cleanup;
4392
4393 if (zone != NULL && !ns_zone_reusable(zone, zconfig))
4394 dns_zone_detach(&zone);
4395
4396 if (zone != NULL && (rpz_num != dns_zone_get_rpz_num(zone) ||
4397 (rpz_num != DNS_RPZ_INVALID_NUM && !old_rpz_ok)))
4398 dns_zone_detach(&zone);
4399
4400 if (zone != NULL) {
4401 /*
4402 * We found a reusable zone. Make it use the
4403 * new view.
4404 */
4405 dns_zone_setview(zone, view);
4406 if (view->acache != NULL)
4407 dns_zone_setacache(zone, view->acache);
4408 } else {
4409 /*
4410 * We cannot reuse an existing zone, we have
4411 * to create a new one.
4412 */
4413 CHECK(dns_zonemgr_createzone(ns_g_server->zonemgr, &zone));
4414 CHECK(dns_zone_setorigin(zone, origin));
4415 dns_zone_setview(zone, view);
4416 if (view->acache != NULL)
4417 dns_zone_setacache(zone, view->acache);
4418 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
4419 dns_zone_setstats(zone, ns_g_server->zonestats);
4420 }
4421
4422 if (rpz_num != DNS_RPZ_INVALID_NUM) {
4423 result = dns_zone_rpz_enable(zone, view->rpzs, rpz_num);
4424 if (result != ISC_R_SUCCESS) {
4425 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4426 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
4427 "zone '%s': incompatible"
4428 " masterfile-format or database"
4429 " for a response policy zone",
4430 zname);
4431 goto cleanup;
4432 }
4433 }
4434
4435 /*
4436 * If the zone contains a 'forwarders' statement, configure
4437 * selective forwarding.
4438 */
4439 forwarders = NULL;
4440 if (cfg_map_get(zoptions, "forwarders", &forwarders) == ISC_R_SUCCESS)
4441 {
4442 forwardtype = NULL;
4443 (void)cfg_map_get(zoptions, "forward", &forwardtype);
4444 CHECK(configure_forward(config, view, origin, forwarders,
4445 forwardtype));
4446 }
4447
4448 /*
4449 * Stub and forward zones may also refer to delegation only points.
4450 */
4451 only = NULL;
4452 if (cfg_map_get(zoptions, "delegation-only", &only) == ISC_R_SUCCESS)
4453 {
4454 if (cfg_obj_asboolean(only))
4455 CHECK(dns_view_adddelegationonly(view, origin));
4456 }
4457
4458 /*
4459 * Mark whether the zone was originally added at runtime or not
4460 */
4461 dns_zone_setadded(zone, added);
4462
4463 signing = NULL;
4464 if ((strcasecmp(ztypestr, "master") == 0 ||
4465 strcasecmp(ztypestr, "slave") == 0) &&
4466 cfg_map_get(zoptions, "inline-signing", &signing) == ISC_R_SUCCESS &&
4467 cfg_obj_asboolean(signing))
4468 {
4469 dns_zone_getraw(zone, &raw);
4470 if (raw == NULL) {
4471 CHECK(dns_zone_create(&raw, mctx));
4472 CHECK(dns_zone_setorigin(raw, origin));
4473 dns_zone_setview(raw, view);
4474 if (view->acache != NULL)
4475 dns_zone_setacache(raw, view->acache);
4476 dns_zone_setstats(raw, ns_g_server->zonestats);
4477 CHECK(dns_zone_link(zone, raw));
4478 }
4479 }
4480
4481 /*
4482 * Configure the zone.
4483 */
4484 CHECK(ns_zone_configure(config, vconfig, zconfig, aclconf, zone, raw));
4485
4486 /*
4487 * Add the zone to its view in the new view list.
4488 */
4489 CHECK(dns_view_addzone(view, zone));
4490
4491 /*
4492 * Ensure that zone keys are reloaded on reconfig
4493 */
4494 if ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_MAINTAIN) != 0)
4495 dns_zone_rekey(zone, ISC_FALSE);
4496
4497 cleanup:
4498 if (zone != NULL)
4499 dns_zone_detach(&zone);
4500 if (raw != NULL)
4501 dns_zone_detach(&raw);
4502 if (pview != NULL)
4503 dns_view_detach(&pview);
4504
4505 return (result);
4506 }
4507
4508 /*
4509 * Configure built-in zone for storing managed-key data.
4510 */
4511
4512 #define KEYZONE "managed-keys.bind"
4513 #define MKEYS ".mkeys"
4514
4515 static isc_result_t
4516 add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx) {
4517 isc_result_t result;
4518 dns_view_t *pview = NULL;
4519 dns_zone_t *zone = NULL;
4520 dns_acl_t *none = NULL;
4521 char filename[PATH_MAX];
4522 char buffer[ISC_SHA256_DIGESTSTRINGLENGTH + sizeof(MKEYS)];
4523 int n;
4524
4525 REQUIRE(view != NULL);
4526
4527 /* See if we can re-use an existing keydata zone. */
4528 result = dns_viewlist_find(&ns_g_server->viewlist,
4529 view->name, view->rdclass,
4530 &pview);
4531 if (result != ISC_R_NOTFOUND &&
4532 result != ISC_R_SUCCESS)
4533 return (result);
4534
4535 if (pview != NULL && pview->managed_keys != NULL) {
4536 dns_zone_attach(pview->managed_keys, &view->managed_keys);
4537 dns_zone_setview(pview->managed_keys, view);
4538 dns_view_detach(&pview);
4539 dns_zone_synckeyzone(view->managed_keys);
4540 return (ISC_R_SUCCESS);
4541 }
4542
4543 /* No existing keydata zone was found; create one */
4544 CHECK(dns_zonemgr_createzone(ns_g_server->zonemgr, &zone));
4545 CHECK(dns_zone_setorigin(zone, dns_rootname));
4546
4547 isc_sha256_data((void *)view->name, strlen(view->name), buffer);
4548 strcat(buffer, MKEYS);
4549 n = snprintf(filename, sizeof(filename), "%s%s%s",
4550 directory ? directory : "", directory ? "/" : "",
4551 strcmp(view->name, "_default") == 0 ? KEYZONE : buffer);
4552 if (n < 0 || (size_t)n >= sizeof(filename)) {
4553 result = (n < 0) ? ISC_R_FAILURE : ISC_R_NOSPACE;
4554 goto cleanup;
4555 }
4556 CHECK(dns_zone_setfile(zone, filename));
4557
4558 dns_zone_setview(zone, view);
4559 dns_zone_settype(zone, dns_zone_key);
4560 dns_zone_setclass(zone, view->rdclass);
4561
4562 CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
4563
4564 if (view->acache != NULL)
4565 dns_zone_setacache(zone, view->acache);
4566
4567 CHECK(dns_acl_none(mctx, &none));
4568 dns_zone_setqueryacl(zone, none);
4569 dns_zone_setqueryonacl(zone, none);
4570 dns_acl_detach(&none);
4571
4572 dns_zone_setdialup(zone, dns_dialuptype_no);
4573 dns_zone_setnotifytype(zone, dns_notifytype_no);
4574 dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, ISC_TRUE);
4575 dns_zone_setjournalsize(zone, 0);
4576
4577 dns_zone_setstats(zone, ns_g_server->zonestats);
4578 CHECK(setquerystats(zone, mctx, dns_zonestat_none));
4579
4580 if (view->managed_keys != NULL)
4581 dns_zone_detach(&view->managed_keys);
4582 dns_zone_attach(zone, &view->managed_keys);
4583
4584 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4585 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
4586 "set up managed keys zone for view %s, file '%s'",
4587 view->name, filename);
4588
4589 cleanup:
4590 if (zone != NULL)
4591 dns_zone_detach(&zone);
4592 if (none != NULL)
4593 dns_acl_detach(&none);
4594
4595 return (result);
4596 }
4597
4598 /*
4599 * Configure a single server quota.
4600 */
4601 static void
4602 configure_server_quota(const cfg_obj_t **maps, const char *name,
4603 isc_quota_t *quota)
4604 {
4605 const cfg_obj_t *obj = NULL;
4606 isc_result_t result;
4607
4608 result = ns_config_get(maps, name, &obj);
4609 INSIST(result == ISC_R_SUCCESS);
4610 isc_quota_max(quota, cfg_obj_asuint32(obj));
4611 }
4612
4613 /*
4614 * This function is called as soon as the 'directory' statement has been
4615 * parsed. This can be extended to support other options if necessary.
4616 */
4617 static isc_result_t
4618 directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) {
4619 isc_result_t result;
4620 const char *directory;
4621
4622 REQUIRE(strcasecmp("directory", clausename) == 0);
4623
4624 UNUSED(arg);
4625 UNUSED(clausename);
4626
4627 /*
4628 * Change directory.
4629 */
4630 directory = cfg_obj_asstring(obj);
4631
4632 if (! isc_file_ischdiridempotent(directory))
4633 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_WARNING,
4634 "option 'directory' contains relative path '%s'",
4635 directory);
4636
4637 result = isc_dir_chdir(directory);
4638 if (result != ISC_R_SUCCESS) {
4639 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
4640 "change directory to '%s' failed: %s",
4641 directory, isc_result_totext(result));
4642 return (result);
4643 }
4644
4645 return (ISC_R_SUCCESS);
4646 }
4647
4648 static void
4649 scan_interfaces(ns_server_t *server, isc_boolean_t verbose) {
4650 isc_boolean_t match_mapped = server->aclenv.match_mapped;
4651
4652 ns_interfacemgr_scan(server->interfacemgr, verbose);
4653 /*
4654 * Update the "localhost" and "localnets" ACLs to match the
4655 * current set of network interfaces.
4656 */
4657 dns_aclenv_copy(&server->aclenv,
4658 ns_interfacemgr_getaclenv(server->interfacemgr));
4659
4660 server->aclenv.match_mapped = match_mapped;
4661 }
4662
4663 static isc_result_t
4664 add_listenelt(isc_mem_t *mctx, ns_listenlist_t *list, isc_sockaddr_t *addr,
4665 isc_dscp_t dscp, isc_boolean_t wcardport_ok)
4666 {
4667 ns_listenelt_t *lelt = NULL;
4668 dns_acl_t *src_acl = NULL;
4669 isc_result_t result;
4670 isc_sockaddr_t any_sa6;
4671 isc_netaddr_t netaddr;
4672
4673 REQUIRE(isc_sockaddr_pf(addr) == AF_INET6);
4674
4675 isc_sockaddr_any6(&any_sa6);
4676 if (!isc_sockaddr_equal(&any_sa6, addr) &&
4677 (wcardport_ok || isc_sockaddr_getport(addr) != 0)) {
4678 isc_netaddr_fromin6(&netaddr, &addr->type.sin6.sin6_addr);
4679
4680 result = dns_acl_create(mctx, 0, &src_acl);
4681 if (result != ISC_R_SUCCESS)
4682 return (result);
4683
4684 result = dns_iptable_addprefix(src_acl->iptable,
4685 &netaddr, 128, ISC_TRUE);
4686 if (result != ISC_R_SUCCESS)
4687 goto clean;
4688
4689 result = ns_listenelt_create(mctx, isc_sockaddr_getport(addr),
4690 dscp, src_acl, &lelt);
4691 if (result != ISC_R_SUCCESS)
4692 goto clean;
4693 ISC_LIST_APPEND(list->elts, lelt, link);
4694 }
4695
4696 return (ISC_R_SUCCESS);
4697
4698 clean:
4699 INSIST(lelt == NULL);
4700 dns_acl_detach(&src_acl);
4701
4702 return (result);
4703 }
4704
4705 /*
4706 * Make a list of xxx-source addresses and call ns_interfacemgr_adjust()
4707 * to update the listening interfaces accordingly.
4708 * We currently only consider IPv6, because this only affects IPv6 wildcard
4709 * sockets.
4710 */
4711 static void
4712 adjust_interfaces(ns_server_t *server, isc_mem_t *mctx) {
4713 isc_result_t result;
4714 ns_listenlist_t *list = NULL;
4715 dns_view_t *view;
4716 dns_zone_t *zone, *next;
4717 isc_sockaddr_t addr, *addrp;
4718 isc_dscp_t dscp = -1;
4719
4720 result = ns_listenlist_create(mctx, &list);
4721 if (result != ISC_R_SUCCESS)
4722 return;
4723
4724 for (view = ISC_LIST_HEAD(server->viewlist);
4725 view != NULL;
4726 view = ISC_LIST_NEXT(view, link)) {
4727 dns_dispatch_t *dispatch6;
4728
4729 dispatch6 = dns_resolver_dispatchv6(view->resolver);
4730 if (dispatch6 == NULL)
4731 continue;
4732 result = dns_dispatch_getlocaladdress(dispatch6, &addr);
4733 if (result != ISC_R_SUCCESS)
4734 goto fail;
4735
4736 /*
4737 * We always add non-wildcard address regardless of whether
4738 * the port is 'any' (the fourth arg is TRUE): if the port is
4739 * specific, we need to add it since it may conflict with a
4740 * listening interface; if it's zero, we'll dynamically open
4741 * query ports, and some of them may override an existing
4742 * wildcard IPv6 port.
4743 */
4744 /* XXXMPA fix dscp */
4745 result = add_listenelt(mctx, list, &addr, dscp, ISC_TRUE);
4746 if (result != ISC_R_SUCCESS)
4747 goto fail;
4748 }
4749
4750 zone = NULL;
4751 for (result = dns_zone_first(server->zonemgr, &zone);
4752 result == ISC_R_SUCCESS;
4753 next = NULL, result = dns_zone_next(zone, &next), zone = next) {
4754 dns_view_t *zoneview;
4755
4756 /*
4757 * At this point the zone list may contain a stale zone
4758 * just removed from the configuration. To see the validity,
4759 * check if the corresponding view is in our current view list.
4760 * There may also be old zones that are still in the process
4761 * of shutting down and have detached from their old view
4762 * (zoneview == NULL).
4763 */
4764 zoneview = dns_zone_getview(zone);
4765 if (zoneview == NULL)
4766 continue;
4767 for (view = ISC_LIST_HEAD(server->viewlist);
4768 view != NULL && view != zoneview;
4769 view = ISC_LIST_NEXT(view, link))
4770 ;
4771 if (view == NULL)
4772 continue;
4773
4774 addrp = dns_zone_getnotifysrc6(zone);
4775 dscp = dns_zone_getnotifysrc6dscp(zone);
4776 result = add_listenelt(mctx, list, addrp, dscp, ISC_FALSE);
4777 if (result != ISC_R_SUCCESS)
4778 goto fail;
4779
4780 addrp = dns_zone_getxfrsource6(zone);
4781 dscp = dns_zone_getxfrsource6dscp(zone);
4782 result = add_listenelt(mctx, list, addrp, dscp, ISC_FALSE);
4783 if (result != ISC_R_SUCCESS)
4784 goto fail;
4785 }
4786
4787 ns_interfacemgr_adjust(server->interfacemgr, list, ISC_TRUE);
4788
4789 clean:
4790 ns_listenlist_detach(&list);
4791 return;
4792
4793 fail:
4794 /*
4795 * Even when we failed the procedure, most of other interfaces
4796 * should work correctly. We therefore just warn it.
4797 */
4798 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
4799 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
4800 "could not adjust the listen-on list; "
4801 "some interfaces may not work");
4802 goto clean;
4803 }
4804
4805 /*
4806 * This event callback is invoked to do periodic network interface
4807 * scanning. It is also called by ns_server_scan_interfaces(),
4808 * invoked by "rndc scan"
4809 */
4810
4811 static void
4812 interface_timer_tick(isc_task_t *task, isc_event_t *event) {
4813 isc_result_t result;
4814 ns_server_t *server = (ns_server_t *) event->ev_arg;
4815 INSIST(task == server->task);
4816 UNUSED(task);
4817
4818 isc_event_free(&event);
4819
4820 /*
4821 * XXX should scan interfaces unlocked and get exclusive access
4822 * only to replace ACLs.
4823 */
4824 result = isc_task_beginexclusive(server->task);
4825 RUNTIME_CHECK(result == ISC_R_SUCCESS);
4826 scan_interfaces(server, ISC_FALSE);
4827 isc_task_endexclusive(server->task);
4828 }
4829
4830 static void
4831 heartbeat_timer_tick(isc_task_t *task, isc_event_t *event) {
4832 ns_server_t *server = (ns_server_t *) event->ev_arg;
4833 dns_view_t *view;
4834
4835 UNUSED(task);
4836 isc_event_free(&event);
4837 view = ISC_LIST_HEAD(server->viewlist);
4838 while (view != NULL) {
4839 dns_view_dialup(view);
4840 view = ISC_LIST_NEXT(view, link);
4841 }
4842 }
4843
4844 static void
4845 pps_timer_tick(isc_task_t *task, isc_event_t *event) {
4846 static unsigned int oldrequests = 0;
4847 unsigned int requests = ns_client_requests;
4848
4849 UNUSED(task);
4850 isc_event_free(&event);
4851
4852 /*
4853 * Don't worry about wrapping as the overflow result will be right.
4854 */
4855 dns_pps = (requests - oldrequests) / 1200;
4856 oldrequests = requests;
4857 }
4858
4859 /*
4860 * Replace the current value of '*field', a dynamically allocated
4861 * string or NULL, with a dynamically allocated copy of the
4862 * null-terminated string pointed to by 'value', or NULL.
4863 */
4864 static isc_result_t
4865 setstring(ns_server_t *server, char **field, const char *value) {
4866 char *copy;
4867
4868 if (value != NULL) {
4869 copy = isc_mem_strdup(server->mctx, value);
4870 if (copy == NULL)
4871 return (ISC_R_NOMEMORY);
4872 } else {
4873 copy = NULL;
4874 }
4875
4876 if (*field != NULL)
4877 isc_mem_free(server->mctx, *field);
4878
4879 *field = copy;
4880 return (ISC_R_SUCCESS);
4881 }
4882
4883 /*
4884 * Replace the current value of '*field', a dynamically allocated
4885 * string or NULL, with another dynamically allocated string
4886 * or NULL if whether 'obj' is a string or void value, respectively.
4887 */
4888 static isc_result_t
4889 setoptstring(ns_server_t *server, char **field, const cfg_obj_t *obj) {
4890 if (cfg_obj_isvoid(obj))
4891 return (setstring(server, field, NULL));
4892 else
4893 return (setstring(server, field, cfg_obj_asstring(obj)));
4894 }
4895
4896 static void
4897 set_limit(const cfg_obj_t **maps, const char *configname,
4898 const char *description, isc_resource_t resourceid,
4899 isc_resourcevalue_t defaultvalue)
4900 {
4901 const cfg_obj_t *obj = NULL;
4902 const char *resource;
4903 isc_resourcevalue_t value;
4904 isc_result_t result;
4905
4906 if (ns_config_get(maps, configname, &obj) != ISC_R_SUCCESS)
4907 return;
4908
4909 if (cfg_obj_isstring(obj)) {
4910 resource = cfg_obj_asstring(obj);
4911 if (strcasecmp(resource, "unlimited") == 0)
4912 value = ISC_RESOURCE_UNLIMITED;
4913 else {
4914 INSIST(strcasecmp(resource, "default") == 0);
4915 value = defaultvalue;
4916 }
4917 } else
4918 value = cfg_obj_asuint64(obj);
4919
4920 result = isc_resource_setlimit(resourceid, value);
4921 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
4922 result == ISC_R_SUCCESS ?
4923 ISC_LOG_DEBUG(3) : ISC_LOG_WARNING,
4924 "set maximum %s to %" ISC_PRINT_QUADFORMAT "u: %s",
4925 description, value, isc_result_totext(result));
4926 }
4927
4928 #define SETLIMIT(cfgvar, resource, description) \
4929 set_limit(maps, cfgvar, description, isc_resource_ ## resource, \
4930 ns_g_init ## resource)
4931
4932 static void
4933 set_limits(const cfg_obj_t **maps) {
4934 SETLIMIT("stacksize", stacksize, "stack size");
4935 SETLIMIT("datasize", datasize, "data size");
4936 SETLIMIT("coresize", coresize, "core size");
4937 SETLIMIT("files", openfiles, "open files");
4938 }
4939
4940 static void
4941 portset_fromconf(isc_portset_t *portset, const cfg_obj_t *ports,
4942 isc_boolean_t positive)
4943 {
4944 const cfg_listelt_t *element;
4945
4946 for (element = cfg_list_first(ports);
4947 element != NULL;
4948 element = cfg_list_next(element)) {
4949 const cfg_obj_t *obj = cfg_listelt_value(element);
4950
4951 if (cfg_obj_isuint32(obj)) {
4952 in_port_t port = (in_port_t)cfg_obj_asuint32(obj);
4953
4954 if (positive)
4955 isc_portset_add(portset, port);
4956 else
4957 isc_portset_remove(portset, port);
4958 } else {
4959 const cfg_obj_t *obj_loport, *obj_hiport;
4960 in_port_t loport, hiport;
4961
4962 obj_loport = cfg_tuple_get(obj, "loport");
4963 loport = (in_port_t)cfg_obj_asuint32(obj_loport);
4964 obj_hiport = cfg_tuple_get(obj, "hiport");
4965 hiport = (in_port_t)cfg_obj_asuint32(obj_hiport);
4966
4967 if (positive)
4968 isc_portset_addrange(portset, loport, hiport);
4969 else {
4970 isc_portset_removerange(portset, loport,
4971 hiport);
4972 }
4973 }
4974 }
4975 }
4976
4977 static isc_result_t
4978 removed(dns_zone_t *zone, void *uap) {
4979 const char *type;
4980
4981 if (dns_zone_getview(zone) != uap)
4982 return (ISC_R_SUCCESS);
4983
4984 switch (dns_zone_gettype(zone)) {
4985 case dns_zone_master:
4986 type = "master";
4987 break;
4988 case dns_zone_slave:
4989 type = "slave";
4990 break;
4991 case dns_zone_stub:
4992 type = "stub";
4993 break;
4994 case dns_zone_staticstub:
4995 type = "static-stub";
4996 break;
4997 case dns_zone_redirect:
4998 type = "redirect";
4999 break;
5000 default:
5001 type = "other";
5002 break;
5003 }
5004 dns_zone_log(zone, ISC_LOG_INFO, "(%s) removed", type);
5005 return (ISC_R_SUCCESS);
5006 }
5007
5008 static void
5009 cleanup_session_key(ns_server_t *server, isc_mem_t *mctx) {
5010 if (server->session_keyfile != NULL) {
5011 isc_file_remove(server->session_keyfile);
5012 isc_mem_free(mctx, server->session_keyfile);
5013 server->session_keyfile = NULL;
5014 }
5015
5016 if (server->session_keyname != NULL) {
5017 if (dns_name_dynamic(server->session_keyname))
5018 dns_name_free(server->session_keyname, mctx);
5019 isc_mem_put(mctx, server->session_keyname, sizeof(dns_name_t));
5020 server->session_keyname = NULL;
5021 }
5022
5023 if (server->sessionkey != NULL)
5024 dns_tsigkey_detach(&server->sessionkey);
5025
5026 server->session_keyalg = DST_ALG_UNKNOWN;
5027 server->session_keybits = 0;
5028 }
5029
5030 static isc_result_t
5031 generate_session_key(const char *filename, const char *keynamestr,
5032 dns_name_t *keyname, const char *algstr,
5033 dns_name_t *algname, unsigned int algtype,
5034 isc_uint16_t bits, isc_mem_t *mctx,
5035 dns_tsigkey_t **tsigkeyp)
5036 {
5037 isc_result_t result = ISC_R_SUCCESS;
5038 dst_key_t *key = NULL;
5039 isc_buffer_t key_txtbuffer;
5040 isc_buffer_t key_rawbuffer;
5041 char key_txtsecret[256];
5042 char key_rawsecret[64];
5043 isc_region_t key_rawregion;
5044 isc_stdtime_t now;
5045 dns_tsigkey_t *tsigkey = NULL;
5046 FILE *fp = NULL;
5047
5048 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5049 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
5050 "generating session key for dynamic DNS");
5051
5052 /* generate key */
5053 result = dst_key_generate(keyname, algtype, bits, 1, 0,
5054 DNS_KEYPROTO_ANY, dns_rdataclass_in,
5055 mctx, &key);
5056 if (result != ISC_R_SUCCESS)
5057 return (result);
5058
5059 /*
5060 * Dump the key to the buffer for later use. Should be done before
5061 * we transfer the ownership of key to tsigkey.
5062 */
5063 isc_buffer_init(&key_rawbuffer, &key_rawsecret, sizeof(key_rawsecret));
5064 CHECK(dst_key_tobuffer(key, &key_rawbuffer));
5065
5066 isc_buffer_usedregion(&key_rawbuffer, &key_rawregion);
5067 isc_buffer_init(&key_txtbuffer, &key_txtsecret, sizeof(key_txtsecret));
5068 CHECK(isc_base64_totext(&key_rawregion, -1, "", &key_txtbuffer));
5069
5070 /* Store the key in tsigkey. */
5071 isc_stdtime_get(&now);
5072 CHECK(dns_tsigkey_createfromkey(dst_key_name(key), algname, key,
5073 ISC_FALSE, NULL, now, now, mctx, NULL,
5074 &tsigkey));
5075
5076 /* Dump the key to the key file. */
5077 fp = ns_os_openfile(filename, S_IRUSR|S_IWUSR, ISC_TRUE);
5078 if (fp == NULL) {
5079 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5080 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
5081 "could not create %s", filename);
5082 result = ISC_R_NOPERM;
5083 goto cleanup;
5084 }
5085
5086 fprintf(fp, "key \"%s\" {\n"
5087 "\talgorithm %s;\n"
5088 "\tsecret \"%.*s\";\n};\n", keynamestr, algstr,
5089 (int) isc_buffer_usedlength(&key_txtbuffer),
5090 (char*) isc_buffer_base(&key_txtbuffer));
5091
5092 CHECK(isc_stdio_flush(fp));
5093 CHECK(isc_stdio_close(fp));
5094
5095 dst_key_free(&key);
5096
5097 *tsigkeyp = tsigkey;
5098
5099 return (ISC_R_SUCCESS);
5100
5101 cleanup:
5102 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5103 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
5104 "failed to generate session key "
5105 "for dynamic DNS: %s", isc_result_totext(result));
5106 if (fp != NULL) {
5107 if (isc_file_exists(filename))
5108 (void)isc_file_remove(filename);
5109 (void)isc_stdio_close(fp);
5110 }
5111 if (tsigkey != NULL)
5112 dns_tsigkey_detach(&tsigkey);
5113 if (key != NULL)
5114 dst_key_free(&key);
5115
5116 return (result);
5117 }
5118
5119 static isc_result_t
5120 configure_session_key(const cfg_obj_t **maps, ns_server_t *server,
5121 isc_mem_t *mctx)
5122 {
5123 const char *keyfile, *keynamestr, *algstr;
5124 unsigned int algtype;
5125 dns_fixedname_t fname;
5126 dns_name_t *keyname, *algname;
5127 isc_buffer_t buffer;
5128 isc_uint16_t bits;
5129 const cfg_obj_t *obj;
5130 isc_boolean_t need_deleteold = ISC_FALSE;
5131 isc_boolean_t need_createnew = ISC_FALSE;
5132 isc_result_t result;
5133
5134 obj = NULL;
5135 result = ns_config_get(maps, "session-keyfile", &obj);
5136 if (result == ISC_R_SUCCESS) {
5137 if (cfg_obj_isvoid(obj))
5138 keyfile = NULL; /* disable it */
5139 else
5140 keyfile = cfg_obj_asstring(obj);
5141 } else
5142 keyfile = ns_g_defaultsessionkeyfile;
5143
5144 obj = NULL;
5145 result = ns_config_get(maps, "session-keyname", &obj);
5146 INSIST(result == ISC_R_SUCCESS);
5147 keynamestr = cfg_obj_asstring(obj);
5148 dns_fixedname_init(&fname);
5149 isc_buffer_constinit(&buffer, keynamestr, strlen(keynamestr));
5150 isc_buffer_add(&buffer, strlen(keynamestr));
5151 keyname = dns_fixedname_name(&fname);
5152 result = dns_name_fromtext(keyname, &buffer, dns_rootname, 0, NULL);
5153 if (result != ISC_R_SUCCESS)
5154 return (result);
5155
5156 obj = NULL;
5157 result = ns_config_get(maps, "session-keyalg", &obj);
5158 INSIST(result == ISC_R_SUCCESS);
5159 algstr = cfg_obj_asstring(obj);
5160 algname = NULL;
5161 result = ns_config_getkeyalgorithm2(algstr, &algname, &algtype, &bits);
5162 if (result != ISC_R_SUCCESS) {
5163 const char *s = " (keeping current key)";
5164
5165 cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR, "session-keyalg: "
5166 "unsupported or unknown algorithm '%s'%s",
5167 algstr,
5168 server->session_keyfile != NULL ? s : "");
5169 return (result);
5170 }
5171
5172 /* See if we need to (re)generate a new key. */
5173 if (keyfile == NULL) {
5174 if (server->session_keyfile != NULL)
5175 need_deleteold = ISC_TRUE;
5176 } else if (server->session_keyfile == NULL)
5177 need_createnew = ISC_TRUE;
5178 else if (strcmp(keyfile, server->session_keyfile) != 0 ||
5179 !dns_name_equal(server->session_keyname, keyname) ||
5180 server->session_keyalg != algtype ||
5181 server->session_keybits != bits) {
5182 need_deleteold = ISC_TRUE;
5183 need_createnew = ISC_TRUE;
5184 }
5185
5186 if (need_deleteold) {
5187 INSIST(server->session_keyfile != NULL);
5188 INSIST(server->session_keyname != NULL);
5189 INSIST(server->sessionkey != NULL);
5190
5191 cleanup_session_key(server, mctx);
5192 }
5193
5194 if (need_createnew) {
5195 INSIST(server->sessionkey == NULL);
5196 INSIST(server->session_keyfile == NULL);
5197 INSIST(server->session_keyname == NULL);
5198 INSIST(server->session_keyalg == DST_ALG_UNKNOWN);
5199 INSIST(server->session_keybits == 0);
5200
5201 server->session_keyname = isc_mem_get(mctx, sizeof(dns_name_t));
5202 if (server->session_keyname == NULL)
5203 goto cleanup;
5204 dns_name_init(server->session_keyname, NULL);
5205 CHECK(dns_name_dup(keyname, mctx, server->session_keyname));
5206
5207 server->session_keyfile = isc_mem_strdup(mctx, keyfile);
5208 if (server->session_keyfile == NULL)
5209 goto cleanup;
5210
5211 server->session_keyalg = algtype;
5212 server->session_keybits = bits;
5213
5214 CHECK(generate_session_key(keyfile, keynamestr, keyname, algstr,
5215 algname, algtype, bits, mctx,
5216 &server->sessionkey));
5217 }
5218
5219 return (result);
5220
5221 cleanup:
5222 cleanup_session_key(server, mctx);
5223 return (result);
5224 }
5225
5226 static isc_result_t
5227 setup_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
5228 cfg_parser_t *parser, cfg_aclconfctx_t *actx)
5229 {
5230 isc_result_t result = ISC_R_SUCCESS;
5231 isc_boolean_t allow = ISC_FALSE;
5232 struct cfg_context *nzcfg = NULL;
5233 cfg_parser_t *nzparser = NULL;
5234 cfg_obj_t *nzconfig = NULL;
5235 const cfg_obj_t *maps[4];
5236 const cfg_obj_t *options = NULL, *voptions = NULL;
5237 const cfg_obj_t *nz = NULL;
5238 int i = 0;
5239
5240 REQUIRE (config != NULL);
5241
5242 if (vconfig != NULL)
5243 voptions = cfg_tuple_get(vconfig, "options");
5244 if (voptions != NULL)
5245 maps[i++] = voptions;
5246 result = cfg_map_get(config, "options", &options);
5247 if (result == ISC_R_SUCCESS)
5248 maps[i++] = options;
5249 maps[i++] = ns_g_defaults;
5250 maps[i] = NULL;
5251
5252 result = ns_config_get(maps, "allow-new-zones", &nz);
5253 if (result == ISC_R_SUCCESS)
5254 allow = cfg_obj_asboolean(nz);
5255
5256 if (!allow) {
5257 dns_view_setnewzones(view, ISC_FALSE, NULL, NULL);
5258 return (ISC_R_SUCCESS);
5259 }
5260
5261 nzcfg = isc_mem_get(view->mctx, sizeof(*nzcfg));
5262 if (nzcfg == NULL) {
5263 dns_view_setnewzones(view, ISC_FALSE, NULL, NULL);
5264 return (ISC_R_NOMEMORY);
5265 }
5266
5267 dns_view_setnewzones(view, allow, nzcfg, newzone_cfgctx_destroy);
5268
5269 memset(nzcfg, 0, sizeof(*nzcfg));
5270 isc_mem_attach(view->mctx, &nzcfg->mctx);
5271 cfg_obj_attach(config, &nzcfg->config);
5272 cfg_parser_attach(parser, &nzcfg->parser);
5273 cfg_aclconfctx_attach(actx, &nzcfg->actx);
5274
5275 /*
5276 * Attempt to create a parser and parse the newzones
5277 * file. If successful, preserve both; otherwise leave
5278 * them NULL.
5279 */
5280 result = cfg_parser_create(view->mctx, ns_g_lctx, &nzparser);
5281 if (result == ISC_R_SUCCESS)
5282 result = cfg_parse_file(nzparser, view->new_zone_file,
5283 &cfg_type_newzones, &nzconfig);
5284 if (result == ISC_R_SUCCESS) {
5285 cfg_parser_attach(nzparser, &nzcfg->nzparser);
5286 cfg_obj_attach(nzconfig, &nzcfg->nzconfig);
5287 }
5288
5289 if (nzparser != NULL) {
5290 if (nzconfig != NULL)
5291 cfg_obj_destroy(nzparser, &nzconfig);
5292 cfg_parser_destroy(&nzparser);
5293 }
5294
5295 return (ISC_R_SUCCESS);
5296 }
5297
5298 static int
5299 count_zones(const cfg_obj_t *conf) {
5300 const cfg_obj_t *zonelist = NULL;
5301 const cfg_listelt_t *element;
5302 int n = 0;
5303
5304 REQUIRE(conf != NULL);
5305
5306 cfg_map_get(conf, "zone", &zonelist);
5307 for (element = cfg_list_first(zonelist);
5308 element != NULL;
5309 element = cfg_list_next(element))
5310 n++;
5311
5312 return (n);
5313 }
5314
5315 static isc_result_t
5316 load_configuration(const char *filename, ns_server_t *server,
5317 isc_boolean_t first_time)
5318 {
5319 cfg_obj_t *config = NULL, *bindkeys = NULL;
5320 cfg_parser_t *conf_parser = NULL, *bindkeys_parser = NULL;
5321 const cfg_listelt_t *element;
5322 const cfg_obj_t *builtin_views;
5323 const cfg_obj_t *maps[3];
5324 const cfg_obj_t *obj;
5325 const cfg_obj_t *options;
5326 const cfg_obj_t *usev4ports, *avoidv4ports, *usev6ports, *avoidv6ports;
5327 const cfg_obj_t *views;
5328 dns_view_t *view = NULL;
5329 dns_view_t *view_next;
5330 dns_viewlist_t tmpviewlist;
5331 dns_viewlist_t viewlist, builtin_viewlist;
5332 in_port_t listen_port, udpport_low, udpport_high;
5333 int i;
5334 int num_zones = 0;
5335 isc_boolean_t exclusive = ISC_FALSE;
5336 isc_interval_t interval;
5337 isc_logconfig_t *logc = NULL;
5338 isc_portset_t *v4portset = NULL;
5339 isc_portset_t *v6portset = NULL;
5340 isc_resourcevalue_t nfiles;
5341 isc_result_t result, tresult;
5342 isc_uint32_t heartbeat_interval;
5343 isc_uint32_t interface_interval;
5344 isc_uint32_t reserved;
5345 isc_uint32_t udpsize;
5346 ns_cache_t *nsc;
5347 ns_cachelist_t cachelist, tmpcachelist;
5348 struct cfg_context *nzctx;
5349 unsigned int maxsocks;
5350
5351 ISC_LIST_INIT(viewlist);
5352 ISC_LIST_INIT(builtin_viewlist);
5353 ISC_LIST_INIT(cachelist);
5354
5355 /* Create the ACL configuration context */
5356 if (ns_g_aclconfctx != NULL)
5357 cfg_aclconfctx_detach(&ns_g_aclconfctx);
5358 CHECK(cfg_aclconfctx_create(ns_g_mctx, &ns_g_aclconfctx));
5359
5360 /*
5361 * Parse the global default pseudo-config file.
5362 */
5363 if (first_time) {
5364 CHECK(ns_config_parsedefaults(ns_g_parser, &ns_g_config));
5365 RUNTIME_CHECK(cfg_map_get(ns_g_config, "options",
5366 &ns_g_defaults) == ISC_R_SUCCESS);
5367 }
5368
5369 /*
5370 * Parse the configuration file using the new config code.
5371 */
5372 result = ISC_R_FAILURE;
5373 config = NULL;
5374
5375 /*
5376 * Unless this is lwresd with the -C option, parse the config file.
5377 */
5378 if (!(ns_g_lwresdonly && lwresd_g_useresolvconf)) {
5379 isc_log_write(ns_g_lctx,
5380 NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
5381 ISC_LOG_INFO, "loading configuration from '%s'",
5382 filename);
5383 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx, &conf_parser));
5384 cfg_parser_setcallback(conf_parser, directory_callback, NULL);
5385 result = cfg_parse_file(conf_parser, filename,
5386 &cfg_type_namedconf, &config);
5387 }
5388
5389 /*
5390 * If this is lwresd with the -C option, or lwresd with no -C or -c
5391 * option where the above parsing failed, parse resolv.conf.
5392 */
5393 if (ns_g_lwresdonly &&
5394 (lwresd_g_useresolvconf ||
5395 (!ns_g_conffileset && result == ISC_R_FILENOTFOUND)))
5396 {
5397 isc_log_write(ns_g_lctx,
5398 NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
5399 ISC_LOG_INFO, "loading configuration from '%s'",
5400 lwresd_g_resolvconffile);
5401 if (conf_parser != NULL)
5402 cfg_parser_destroy(&conf_parser);
5403 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx, &conf_parser));
5404 result = ns_lwresd_parseeresolvconf(ns_g_mctx, conf_parser,
5405 &config);
5406 }
5407 CHECK(result);
5408
5409 /*
5410 * Check the validity of the configuration.
5411 */
5412 CHECK(bind9_check_namedconf(config, ns_g_lctx, ns_g_mctx));
5413
5414 /*
5415 * Fill in the maps array, used for resolving defaults.
5416 */
5417 i = 0;
5418 options = NULL;
5419 result = cfg_map_get(config, "options", &options);
5420 if (result == ISC_R_SUCCESS)
5421 maps[i++] = options;
5422 maps[i++] = ns_g_defaults;
5423 maps[i] = NULL;
5424
5425 /*
5426 * If bind.keys exists, load it. If "dnssec-validation auto"
5427 * is turned on, the root key found there will be used as a
5428 * default trust anchor, and if "dnssec-lookaside auto" is
5429 * turned on, then the DLV key found there will too.
5430 */
5431 obj = NULL;
5432 result = ns_config_get(maps, "bindkeys-file", &obj);
5433 INSIST(result == ISC_R_SUCCESS);
5434 CHECKM(setstring(server, &server->bindkeysfile,
5435 cfg_obj_asstring(obj)), "strdup");
5436
5437 if (access(server->bindkeysfile, R_OK) == 0) {
5438 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5439 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
5440 "reading built-in trusted "
5441 "keys from file '%s'", server->bindkeysfile);
5442
5443 CHECK(cfg_parser_create(ns_g_mctx, ns_g_lctx,
5444 &bindkeys_parser));
5445
5446 result = cfg_parse_file(bindkeys_parser, server->bindkeysfile,
5447 &cfg_type_bindkeys, &bindkeys);
5448 CHECK(result);
5449 }
5450
5451 /* Ensure exclusive access to configuration data. */
5452 if (!exclusive) {
5453 result = isc_task_beginexclusive(server->task);
5454 RUNTIME_CHECK(result == ISC_R_SUCCESS);
5455 exclusive = ISC_TRUE;
5456 }
5457
5458 /*
5459 * Set process limits, which (usually) needs to be done as root.
5460 */
5461 set_limits(maps);
5462
5463 /*
5464 * Check if max number of open sockets that the system allows is
5465 * sufficiently large. Failing this condition is not necessarily fatal,
5466 * but may cause subsequent runtime failures for a busy recursive
5467 * server.
5468 */
5469 result = isc_socketmgr_getmaxsockets(ns_g_socketmgr, &maxsocks);
5470 if (result != ISC_R_SUCCESS)
5471 maxsocks = 0;
5472 result = isc_resource_getcurlimit(isc_resource_openfiles, &nfiles);
5473 if (result == ISC_R_SUCCESS && (isc_resourcevalue_t)maxsocks > nfiles) {
5474 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5475 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
5476 "max open files (%" ISC_PRINT_QUADFORMAT "u)"
5477 " is smaller than max sockets (%u)",
5478 nfiles, maxsocks);
5479 }
5480
5481 /*
5482 * Set the number of socket reserved for TCP, stdio etc.
5483 */
5484 obj = NULL;
5485 result = ns_config_get(maps, "reserved-sockets", &obj);
5486 INSIST(result == ISC_R_SUCCESS);
5487 reserved = cfg_obj_asuint32(obj);
5488 if (maxsocks != 0) {
5489 if (maxsocks < 128U) /* Prevent underflow. */
5490 reserved = 0;
5491 else if (reserved > maxsocks - 128U) /* Minimum UDP space. */
5492 reserved = maxsocks - 128;
5493 }
5494 /* Minimum TCP/stdio space. */
5495 if (reserved < 128U)
5496 reserved = 128;
5497 if (reserved + 128U > maxsocks && maxsocks != 0) {
5498 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5499 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
5500 "less than 128 UDP sockets available after "
5501 "applying 'reserved-sockets' and 'maxsockets'");
5502 }
5503 isc__socketmgr_setreserved(ns_g_socketmgr, reserved);
5504
5505 #ifdef HAVE_GEOIP
5506 /*
5507 * Initialize GeoIP databases from the configured location.
5508 * This should happen before configuring any ACLs, so that we
5509 * know what databases are available and can reject any GeoIP
5510 * ACLs that can't work.
5511 */
5512 obj = NULL;
5513 result = ns_config_get(maps, "geoip-directory", &obj);
5514 if (result == ISC_R_SUCCESS && cfg_obj_isstring(obj)) {
5515 char *dir;
5516 DE_CONST(cfg_obj_asstring(obj), dir);
5517 ns_geoip_load(dir);
5518 } else
5519 ns_geoip_load(NULL);
5520 ns_g_aclconfctx->geoip = ns_g_geoip;
5521 #endif /* HAVE_GEOIP */
5522
5523 /*
5524 * Configure various server options.
5525 */
5526 configure_server_quota(maps, "transfers-out", &server->xfroutquota);
5527 configure_server_quota(maps, "tcp-clients", &server->tcpquota);
5528 configure_server_quota(maps, "recursive-clients",
5529 &server->recursionquota);
5530 if (server->recursionquota.max > 1000)
5531 isc_quota_soft(&server->recursionquota,
5532 server->recursionquota.max - 100);
5533 else
5534 isc_quota_soft(&server->recursionquota, 0);
5535
5536 CHECK(configure_view_acl(NULL, config, "blackhole", NULL,
5537 ns_g_aclconfctx, ns_g_mctx,
5538 &server->blackholeacl));
5539 if (server->blackholeacl != NULL)
5540 dns_dispatchmgr_setblackhole(ns_g_dispatchmgr,
5541 server->blackholeacl);
5542
5543 obj = NULL;
5544 result = ns_config_get(maps, "match-mapped-addresses", &obj);
5545 INSIST(result == ISC_R_SUCCESS);
5546 server->aclenv.match_mapped = cfg_obj_asboolean(obj);
5547
5548 CHECKM(ns_statschannels_configure(ns_g_server, config, ns_g_aclconfctx),
5549 "configuring statistics server(s)");
5550
5551 /*
5552 * Configure sets of UDP query source ports.
5553 */
5554 CHECKM(isc_portset_create(ns_g_mctx, &v4portset),
5555 "creating UDP port set");
5556 CHECKM(isc_portset_create(ns_g_mctx, &v6portset),
5557 "creating UDP port set");
5558
5559 usev4ports = NULL;
5560 usev6ports = NULL;
5561 avoidv4ports = NULL;
5562 avoidv6ports = NULL;
5563
5564 (void)ns_config_get(maps, "use-v4-udp-ports", &usev4ports);
5565 if (usev4ports != NULL)
5566 portset_fromconf(v4portset, usev4ports, ISC_TRUE);
5567 else {
5568 CHECKM(isc_net_getudpportrange(AF_INET, &udpport_low,
5569 &udpport_high),
5570 "get the default UDP/IPv4 port range");
5571 if (udpport_low == udpport_high)
5572 isc_portset_add(v4portset, udpport_low);
5573 else {
5574 isc_portset_addrange(v4portset, udpport_low,
5575 udpport_high);
5576 }
5577 if (!ns_g_disable4)
5578 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5579 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
5580 "using default UDP/IPv4 port range: "
5581 "[%d, %d]", udpport_low, udpport_high);
5582 }
5583 (void)ns_config_get(maps, "avoid-v4-udp-ports", &avoidv4ports);
5584 if (avoidv4ports != NULL)
5585 portset_fromconf(v4portset, avoidv4ports, ISC_FALSE);
5586
5587 (void)ns_config_get(maps, "use-v6-udp-ports", &usev6ports);
5588 if (usev6ports != NULL)
5589 portset_fromconf(v6portset, usev6ports, ISC_TRUE);
5590 else {
5591 CHECKM(isc_net_getudpportrange(AF_INET6, &udpport_low,
5592 &udpport_high),
5593 "get the default UDP/IPv6 port range");
5594 if (udpport_low == udpport_high)
5595 isc_portset_add(v6portset, udpport_low);
5596 else {
5597 isc_portset_addrange(v6portset, udpport_low,
5598 udpport_high);
5599 }
5600 if (!ns_g_disable6)
5601 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5602 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
5603 "using default UDP/IPv6 port range: "
5604 "[%d, %d]", udpport_low, udpport_high);
5605 }
5606 (void)ns_config_get(maps, "avoid-v6-udp-ports", &avoidv6ports);
5607 if (avoidv6ports != NULL)
5608 portset_fromconf(v6portset, avoidv6ports, ISC_FALSE);
5609
5610 dns_dispatchmgr_setavailports(ns_g_dispatchmgr, v4portset, v6portset);
5611
5612 /*
5613 * Set the EDNS UDP size when we don't match a view.
5614 */
5615 obj = NULL;
5616 result = ns_config_get(maps, "edns-udp-size", &obj);
5617 INSIST(result == ISC_R_SUCCESS);
5618 udpsize = cfg_obj_asuint32(obj);
5619 if (udpsize < 512)
5620 udpsize = 512;
5621 if (udpsize > 4096)
5622 udpsize = 4096;
5623 ns_g_udpsize = (isc_uint16_t)udpsize;
5624
5625 /*
5626 * Configure the zone manager.
5627 */
5628 obj = NULL;
5629 result = ns_config_get(maps, "transfers-in", &obj);
5630 INSIST(result == ISC_R_SUCCESS);
5631 dns_zonemgr_settransfersin(server->zonemgr, cfg_obj_asuint32(obj));
5632
5633 obj = NULL;
5634 result = ns_config_get(maps, "transfers-per-ns", &obj);
5635 INSIST(result == ISC_R_SUCCESS);
5636 dns_zonemgr_settransfersperns(server->zonemgr, cfg_obj_asuint32(obj));
5637
5638 obj = NULL;
5639 result = ns_config_get(maps, "serial-query-rate", &obj);
5640 INSIST(result == ISC_R_SUCCESS);
5641 dns_zonemgr_setserialqueryrate(server->zonemgr, cfg_obj_asuint32(obj));
5642
5643 /*
5644 * Determine which port to use for listening for incoming connections.
5645 */
5646 if (ns_g_port != 0)
5647 listen_port = ns_g_port;
5648 else
5649 CHECKM(ns_config_getport(config, &listen_port), "port");
5650
5651 /*
5652 * Determing the default DSCP code point.
5653 */
5654 CHECKM(ns_config_getdscp(config, &ns_g_dscp), "dscp");
5655
5656 /*
5657 * Find the listen queue depth.
5658 */
5659 obj = NULL;
5660 result = ns_config_get(maps, "tcp-listen-queue", &obj);
5661 INSIST(result == ISC_R_SUCCESS);
5662 ns_g_listen = cfg_obj_asuint32(obj);
5663 if ((ns_g_listen > 0) && (ns_g_listen < 10))
5664 ns_g_listen = 10;
5665
5666 /*
5667 * Configure the interface manager according to the "listen-on"
5668 * statement.
5669 */
5670 {
5671 const cfg_obj_t *clistenon = NULL;
5672 ns_listenlist_t *listenon = NULL;
5673
5674 clistenon = NULL;
5675 /*
5676 * Even though listen-on is present in the default
5677 * configuration, we can't use it here, since it isn't
5678 * used if we're in lwresd mode. This way is easier.
5679 */
5680 if (options != NULL)
5681 (void)cfg_map_get(options, "listen-on", &clistenon);
5682 if (clistenon != NULL) {
5683 /* check return code? */
5684 (void)ns_listenlist_fromconfig(clistenon, config,
5685 ns_g_aclconfctx,
5686 ns_g_mctx, AF_INET,
5687 &listenon);
5688 } else if (!ns_g_lwresdonly) {
5689 /*
5690 * Not specified, use default.
5691 */
5692 CHECK(ns_listenlist_default(ns_g_mctx, listen_port,
5693 -1, ISC_TRUE, &listenon));
5694 }
5695 if (listenon != NULL) {
5696 ns_interfacemgr_setlistenon4(server->interfacemgr,
5697 listenon);
5698 ns_listenlist_detach(&listenon);
5699 }
5700 }
5701 /*
5702 * Ditto for IPv6.
5703 */
5704 {
5705 const cfg_obj_t *clistenon = NULL;
5706 ns_listenlist_t *listenon = NULL;
5707
5708 if (options != NULL)
5709 (void)cfg_map_get(options, "listen-on-v6", &clistenon);
5710 if (clistenon != NULL) {
5711 /* check return code? */
5712 (void)ns_listenlist_fromconfig(clistenon, config,
5713 ns_g_aclconfctx,
5714 ns_g_mctx, AF_INET6,
5715 &listenon);
5716 } else if (!ns_g_lwresdonly) {
5717 /*
5718 * Not specified, use default.
5719 */
5720 CHECK(ns_listenlist_default(ns_g_mctx, listen_port,
5721 -1, ISC_TRUE, &listenon));
5722 }
5723 if (listenon != NULL) {
5724 ns_interfacemgr_setlistenon6(server->interfacemgr,
5725 listenon);
5726 ns_listenlist_detach(&listenon);
5727 }
5728 }
5729
5730 /*
5731 * Rescan the interface list to pick up changes in the
5732 * listen-on option. It's important that we do this before we try
5733 * to configure the query source, since the dispatcher we use might
5734 * be shared with an interface.
5735 */
5736 scan_interfaces(server, ISC_TRUE);
5737
5738 /*
5739 * Arrange for further interface scanning to occur periodically
5740 * as specified by the "interface-interval" option.
5741 */
5742 obj = NULL;
5743 result = ns_config_get(maps, "interface-interval", &obj);
5744 INSIST(result == ISC_R_SUCCESS);
5745 interface_interval = cfg_obj_asuint32(obj) * 60;
5746 if (interface_interval == 0) {
5747 CHECK(isc_timer_reset(server->interface_timer,
5748 isc_timertype_inactive,
5749 NULL, NULL, ISC_TRUE));
5750 } else if (server->interface_interval != interface_interval) {
5751 isc_interval_set(&interval, interface_interval, 0);
5752 CHECK(isc_timer_reset(server->interface_timer,
5753 isc_timertype_ticker,
5754 NULL, &interval, ISC_FALSE));
5755 }
5756 server->interface_interval = interface_interval;
5757
5758 /*
5759 * Enable automatic interface scans.
5760 */
5761 obj = NULL;
5762 result = ns_config_get(maps, "automatic-interface-scan", &obj);
5763 INSIST(result == ISC_R_SUCCESS);
5764 server->interface_auto = cfg_obj_asboolean(obj);
5765
5766 /*
5767 * Configure the dialup heartbeat timer.
5768 */
5769 obj = NULL;
5770 result = ns_config_get(maps, "heartbeat-interval", &obj);
5771 INSIST(result == ISC_R_SUCCESS);
5772 heartbeat_interval = cfg_obj_asuint32(obj) * 60;
5773 if (heartbeat_interval == 0) {
5774 CHECK(isc_timer_reset(server->heartbeat_timer,
5775 isc_timertype_inactive,
5776 NULL, NULL, ISC_TRUE));
5777 } else if (server->heartbeat_interval != heartbeat_interval) {
5778 isc_interval_set(&interval, heartbeat_interval, 0);
5779 CHECK(isc_timer_reset(server->heartbeat_timer,
5780 isc_timertype_ticker,
5781 NULL, &interval, ISC_FALSE));
5782 }
5783 server->heartbeat_interval = heartbeat_interval;
5784
5785 isc_interval_set(&interval, 1200, 0);
5786 CHECK(isc_timer_reset(server->pps_timer, isc_timertype_ticker, NULL,
5787 &interval, ISC_FALSE));
5788
5789 /*
5790 * Write the PID file.
5791 */
5792 obj = NULL;
5793 if (ns_config_get(maps, "pid-file", &obj) == ISC_R_SUCCESS)
5794 if (cfg_obj_isvoid(obj))
5795 ns_os_writepidfile(NULL, first_time);
5796 else
5797 ns_os_writepidfile(cfg_obj_asstring(obj), first_time);
5798 else if (ns_g_lwresdonly)
5799 ns_os_writepidfile(lwresd_g_defaultpidfile, first_time);
5800 else
5801 ns_os_writepidfile(ns_g_defaultpidfile, first_time);
5802
5803 /*
5804 * Configure the server-wide session key. This must be done before
5805 * configure views because zone configuration may need to know
5806 * session-keyname.
5807 *
5808 * Failure of session key generation isn't fatal at this time; if it
5809 * turns out that a session key is really needed but doesn't exist,
5810 * we'll treat it as a fatal error then.
5811 */
5812 (void)configure_session_key(maps, server, ns_g_mctx);
5813
5814 views = NULL;
5815 (void)cfg_map_get(config, "view", &views);
5816
5817 /*
5818 * Create the views and count all the configured zones in
5819 * order to correctly size the zone manager's task table.
5820 * (We only count zones for configured views; the built-in
5821 * "bind" view can be ignored as it only adds a negligible
5822 * number of zones.)
5823 *
5824 * If we're allowing new zones, we need to be able to find the
5825 * new zone file and count those as well. So we setup the new
5826 * zone configuration context, but otherwise view configuration
5827 * waits until after the zone manager's task list has been sized.
5828 */
5829 for (element = cfg_list_first(views);
5830 element != NULL;
5831 element = cfg_list_next(element))
5832 {
5833 cfg_obj_t *vconfig = cfg_listelt_value(element);
5834 const cfg_obj_t *voptions = cfg_tuple_get(vconfig, "options");
5835 view = NULL;
5836
5837 CHECK(create_view(vconfig, &viewlist, &view));
5838 INSIST(view != NULL);
5839
5840 num_zones += count_zones(voptions);
5841 CHECK(setup_newzones(view, config, vconfig, conf_parser,
5842 ns_g_aclconfctx));
5843
5844 nzctx = view->new_zone_config;
5845 if (nzctx != NULL && nzctx->nzconfig != NULL)
5846 num_zones += count_zones(nzctx->nzconfig);
5847
5848 dns_view_detach(&view);
5849 }
5850
5851 /*
5852 * If there were no explicit views then we do the default
5853 * view here.
5854 */
5855 if (views == NULL) {
5856 CHECK(create_view(NULL, &viewlist, &view));
5857 INSIST(view != NULL);
5858
5859 num_zones = count_zones(config);
5860
5861 CHECK(setup_newzones(view, config, NULL, conf_parser,
5862 ns_g_aclconfctx));
5863
5864 nzctx = view->new_zone_config;
5865 if (nzctx != NULL && nzctx->nzconfig != NULL)
5866 num_zones += count_zones(nzctx->nzconfig);
5867
5868 dns_view_detach(&view);
5869 }
5870
5871 /*
5872 * Zones have been counted; set the zone manager task pool size.
5873 */
5874 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5875 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
5876 "sizing zone task pool based on %d zones", num_zones);
5877 CHECK(dns_zonemgr_setsize(ns_g_server->zonemgr, num_zones));
5878
5879 /*
5880 * Configure and freeze all explicit views. Explicit
5881 * views that have zones were already created at parsing
5882 * time, but views with no zones must be created here.
5883 */
5884 for (element = cfg_list_first(views);
5885 element != NULL;
5886 element = cfg_list_next(element))
5887 {
5888 cfg_obj_t *vconfig = cfg_listelt_value(element);
5889
5890 view = NULL;
5891 CHECK(find_view(vconfig, &viewlist, &view));
5892 CHECK(configure_view(view, &viewlist, config, vconfig,
5893 &cachelist, bindkeys, ns_g_mctx,
5894 ns_g_aclconfctx, ISC_TRUE));
5895 dns_view_freeze(view);
5896 dns_view_detach(&view);
5897 }
5898
5899 /*
5900 * Make sure we have a default view if and only if there
5901 * were no explicit views.
5902 */
5903 if (views == NULL) {
5904 view = NULL;
5905 CHECK(find_view(NULL, &viewlist, &view));
5906 CHECK(configure_view(view, &viewlist, config, NULL,
5907 &cachelist, bindkeys,
5908 ns_g_mctx, ns_g_aclconfctx, ISC_TRUE));
5909 dns_view_freeze(view);
5910 dns_view_detach(&view);
5911 }
5912
5913 /*
5914 * Create (or recreate) the built-in views.
5915 */
5916 builtin_views = NULL;
5917 RUNTIME_CHECK(cfg_map_get(ns_g_config, "view",
5918 &builtin_views) == ISC_R_SUCCESS);
5919 for (element = cfg_list_first(builtin_views);
5920 element != NULL;
5921 element = cfg_list_next(element))
5922 {
5923 cfg_obj_t *vconfig = cfg_listelt_value(element);
5924
5925 CHECK(create_view(vconfig, &builtin_viewlist, &view));
5926 CHECK(configure_view(view, &viewlist, config, vconfig,
5927 &cachelist, bindkeys,
5928 ns_g_mctx, ns_g_aclconfctx, ISC_FALSE));
5929 dns_view_freeze(view);
5930 dns_view_detach(&view);
5931 view = NULL;
5932 }
5933
5934 /* Now combine the two viewlists into one */
5935 ISC_LIST_APPENDLIST(viewlist, builtin_viewlist, link);
5936
5937 /* Swap our new view list with the production one. */
5938 tmpviewlist = server->viewlist;
5939 server->viewlist = viewlist;
5940 viewlist = tmpviewlist;
5941
5942 /* Make the view list available to each of the views */
5943 view = ISC_LIST_HEAD(server->viewlist);
5944 while (view != NULL) {
5945 view->viewlist = &server->viewlist;
5946 view = ISC_LIST_NEXT(view, link);
5947 }
5948
5949 /* Swap our new cache list with the production one. */
5950 tmpcachelist = server->cachelist;
5951 server->cachelist = cachelist;
5952 cachelist = tmpcachelist;
5953
5954 /* Load the TKEY information from the configuration. */
5955 if (options != NULL) {
5956 dns_tkeyctx_t *t = NULL;
5957 CHECKM(ns_tkeyctx_fromconfig(options, ns_g_mctx, ns_g_entropy,
5958 &t),
5959 "configuring TKEY");
5960 if (server->tkeyctx != NULL)
5961 dns_tkeyctx_destroy(&server->tkeyctx);
5962 server->tkeyctx = t;
5963 }
5964
5965 /*
5966 * Bind the control port(s).
5967 */
5968 CHECKM(ns_controls_configure(ns_g_server->controls, config,
5969 ns_g_aclconfctx),
5970 "binding control channel(s)");
5971
5972 /*
5973 * Bind the lwresd port(s).
5974 */
5975 CHECKM(ns_lwresd_configure(ns_g_mctx, config),
5976 "binding lightweight resolver ports");
5977
5978 /*
5979 * Open the source of entropy.
5980 */
5981 if (first_time) {
5982 obj = NULL;
5983 result = ns_config_get(maps, "random-device", &obj);
5984 if (result != ISC_R_SUCCESS) {
5985 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
5986 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
5987 "no source of entropy found");
5988 } else {
5989 const char *randomdev = cfg_obj_asstring(obj);
5990 result = isc_entropy_createfilesource(ns_g_entropy,
5991 randomdev);
5992 if (result != ISC_R_SUCCESS)
5993 isc_log_write(ns_g_lctx,
5994 NS_LOGCATEGORY_GENERAL,
5995 NS_LOGMODULE_SERVER,
5996 ISC_LOG_INFO,
5997 "could not open entropy source "
5998 "%s: %s",
5999 randomdev,
6000 isc_result_totext(result));
6001 #ifdef PATH_RANDOMDEV
6002 if (ns_g_fallbackentropy != NULL) {
6003 if (result != ISC_R_SUCCESS) {
6004 isc_log_write(ns_g_lctx,
6005 NS_LOGCATEGORY_GENERAL,
6006 NS_LOGMODULE_SERVER,
6007 ISC_LOG_INFO,
6008 "using pre-chroot entropy source "
6009 "%s",
6010 PATH_RANDOMDEV);
6011 isc_entropy_detach(&ns_g_entropy);
6012 isc_entropy_attach(ns_g_fallbackentropy,
6013 &ns_g_entropy);
6014 }
6015 isc_entropy_detach(&ns_g_fallbackentropy);
6016 }
6017 #endif
6018 }
6019 }
6020
6021 /*
6022 * Relinquish root privileges.
6023 */
6024 if (first_time)
6025 ns_os_changeuser();
6026
6027 #if 0
6028 /*
6029 * Check that the working directory is writable.
6030 */
6031 if (access(".", W_OK) != 0) {
6032 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6033 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
6034 "the working directory is not writable");
6035 }
6036 #endif
6037
6038 /*
6039 * Configure the logging system.
6040 *
6041 * Do this after changing UID to make sure that any log
6042 * files specified in named.conf get created by the
6043 * unprivileged user, not root.
6044 */
6045 if (ns_g_logstderr) {
6046 const cfg_obj_t *logobj = NULL;
6047
6048 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6049 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
6050 "not using config file logging "
6051 "statement for logging due to "
6052 "-g option");
6053
6054 (void)cfg_map_get(config, "logging", &logobj);
6055 if (logobj != NULL) {
6056 result = ns_log_configure(NULL, logobj);
6057 if (result != ISC_R_SUCCESS) {
6058 isc_log_write(ns_g_lctx,
6059 NS_LOGCATEGORY_GENERAL,
6060 NS_LOGMODULE_SERVER,
6061 ISC_LOG_ERROR,
6062 "checking logging configuration "
6063 "failed: %s",
6064 isc_result_totext(result));
6065 goto cleanup;
6066 }
6067 }
6068 } else {
6069 const cfg_obj_t *logobj = NULL;
6070
6071 CHECKM(isc_logconfig_create(ns_g_lctx, &logc),
6072 "creating new logging configuration");
6073
6074 logobj = NULL;
6075 (void)cfg_map_get(config, "logging", &logobj);
6076 if (logobj != NULL) {
6077 CHECKM(ns_log_configure(logc, logobj),
6078 "configuring logging");
6079 } else {
6080 CHECKM(ns_log_setdefaultchannels(logc),
6081 "setting up default logging channels");
6082 CHECKM(ns_log_setunmatchedcategory(logc),
6083 "setting up default 'category unmatched'");
6084 CHECKM(ns_log_setdefaultcategory(logc),
6085 "setting up default 'category default'");
6086 }
6087
6088 CHECKM(isc_logconfig_use(ns_g_lctx, logc),
6089 "installing logging configuration");
6090 logc = NULL;
6091
6092 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6093 NS_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
6094 "now using logging configuration from "
6095 "config file");
6096 }
6097
6098 /*
6099 * Set the default value of the query logging flag depending
6100 * whether a "queries" category has been defined. This is
6101 * a disgusting hack, but we need to do this for BIND 8
6102 * compatibility.
6103 */
6104 if (first_time) {
6105 const cfg_obj_t *logobj = NULL;
6106 const cfg_obj_t *categories = NULL;
6107
6108 obj = NULL;
6109 if (ns_config_get(maps, "querylog", &obj) == ISC_R_SUCCESS) {
6110 server->log_queries = cfg_obj_asboolean(obj);
6111 } else {
6112
6113 (void)cfg_map_get(config, "logging", &logobj);
6114 if (logobj != NULL)
6115 (void)cfg_map_get(logobj, "category",
6116 &categories);
6117 if (categories != NULL) {
6118 for (element = cfg_list_first(categories);
6119 element != NULL;
6120 element = cfg_list_next(element))
6121 {
6122 const cfg_obj_t *catobj;
6123 const char *str;
6124
6125 obj = cfg_listelt_value(element);
6126 catobj = cfg_tuple_get(obj, "name");
6127 str = cfg_obj_asstring(catobj);
6128 if (strcasecmp(str, "queries") == 0)
6129 server->log_queries = ISC_TRUE;
6130 }
6131 }
6132 }
6133 }
6134
6135
6136 obj = NULL;
6137 if (options != NULL &&
6138 cfg_map_get(options, "memstatistics", &obj) == ISC_R_SUCCESS)
6139 ns_g_memstatistics = cfg_obj_asboolean(obj);
6140 else
6141 ns_g_memstatistics =
6142 ISC_TF((isc_mem_debugging & ISC_MEM_DEBUGRECORD) != 0);
6143
6144 obj = NULL;
6145 if (ns_config_get(maps, "memstatistics-file", &obj) == ISC_R_SUCCESS)
6146 ns_main_setmemstats(cfg_obj_asstring(obj));
6147 else if (ns_g_memstatistics)
6148 ns_main_setmemstats("named.memstats");
6149 else
6150 ns_main_setmemstats(NULL);
6151
6152 obj = NULL;
6153 result = ns_config_get(maps, "statistics-file", &obj);
6154 INSIST(result == ISC_R_SUCCESS);
6155 CHECKM(setstring(server, &server->statsfile, cfg_obj_asstring(obj)),
6156 "strdup");
6157
6158 obj = NULL;
6159 result = ns_config_get(maps, "dump-file", &obj);
6160 INSIST(result == ISC_R_SUCCESS);
6161 CHECKM(setstring(server, &server->dumpfile, cfg_obj_asstring(obj)),
6162 "strdup");
6163
6164 obj = NULL;
6165 result = ns_config_get(maps, "secroots-file", &obj);
6166 INSIST(result == ISC_R_SUCCESS);
6167 CHECKM(setstring(server, &server->secrootsfile, cfg_obj_asstring(obj)),
6168 "strdup");
6169
6170 obj = NULL;
6171 result = ns_config_get(maps, "recursing-file", &obj);
6172 INSIST(result == ISC_R_SUCCESS);
6173 CHECKM(setstring(server, &server->recfile, cfg_obj_asstring(obj)),
6174 "strdup");
6175
6176 obj = NULL;
6177 result = ns_config_get(maps, "version", &obj);
6178 if (result == ISC_R_SUCCESS) {
6179 CHECKM(setoptstring(server, &server->version, obj), "strdup");
6180 server->version_set = ISC_TRUE;
6181 } else {
6182 server->version_set = ISC_FALSE;
6183 }
6184
6185 obj = NULL;
6186 result = ns_config_get(maps, "hostname", &obj);
6187 if (result == ISC_R_SUCCESS) {
6188 CHECKM(setoptstring(server, &server->hostname, obj), "strdup");
6189 server->hostname_set = ISC_TRUE;
6190 } else {
6191 server->hostname_set = ISC_FALSE;
6192 }
6193
6194 obj = NULL;
6195 result = ns_config_get(maps, "server-id", &obj);
6196 server->server_usehostname = ISC_FALSE;
6197 if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) {
6198 /* The parser translates "hostname" to ISC_TRUE */
6199 server->server_usehostname = cfg_obj_asboolean(obj);
6200 result = setstring(server, &server->server_id, NULL);
6201 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6202 } else if (result == ISC_R_SUCCESS) {
6203 /* Found a quoted string */
6204 CHECKM(setoptstring(server, &server->server_id, obj), "strdup");
6205 } else {
6206 result = setstring(server, &server->server_id, NULL);
6207 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6208 }
6209
6210 obj = NULL;
6211 result = ns_config_get(maps, "flush-zones-on-shutdown", &obj);
6212 if (result == ISC_R_SUCCESS) {
6213 server->flushonshutdown = cfg_obj_asboolean(obj);
6214 } else {
6215 server->flushonshutdown = ISC_FALSE;
6216 }
6217
6218 #ifdef ISC_PLATFORM_USESIT
6219 obj = NULL;
6220 result = ns_config_get(maps, "sit-secret", &obj);
6221 if (result == ISC_R_SUCCESS) {
6222 isc_buffer_t b;
6223
6224 memset(server->secret, 0, sizeof(server->secret));
6225 isc_buffer_init(&b, server->secret, sizeof(server->secret));
6226 result = isc_hex_decodestring(cfg_obj_asstring(obj), &b);
6227 if (result != ISC_R_SUCCESS && result != ISC_R_NOSPACE)
6228 goto cleanup;
6229 #ifdef AES_SIT
6230 if (isc_buffer_usedlength(&b) != ISC_AES128_KEYLENGTH)
6231 CHECKM(ISC_R_RANGE,
6232 "AES sit-secret must be on 128 bits");
6233 #endif
6234 #ifdef HMAC_SHA1_SIT
6235 if (isc_buffer_usedlength(&b) != ISC_SHA1_DIGESTLENGTH)
6236 CHECKM(ISC_R_RANGE,
6237 "SHA1 sit-secret must be on 160 bits");
6238 #endif
6239 #ifdef HMAC_SHA256_SIT
6240 if (isc_buffer_usedlength(&b) != ISC_SHA256_DIGESTLENGTH)
6241 CHECKM(ISC_R_RANGE,
6242 "SHA256 sit-secret must be on 256 bits");
6243 #endif
6244 } else {
6245 result = isc_entropy_getdata(ns_g_entropy,
6246 server->secret,
6247 sizeof(server->secret),
6248 NULL,
6249 0);
6250 if (result != ISC_R_SUCCESS)
6251 goto cleanup;
6252 }
6253 #endif
6254
6255 result = ISC_R_SUCCESS;
6256
6257 cleanup:
6258 if (logc != NULL)
6259 isc_logconfig_destroy(&logc);
6260
6261 if (v4portset != NULL)
6262 isc_portset_destroy(ns_g_mctx, &v4portset);
6263
6264 if (v6portset != NULL)
6265 isc_portset_destroy(ns_g_mctx, &v6portset);
6266
6267 if (conf_parser != NULL) {
6268 if (config != NULL)
6269 cfg_obj_destroy(conf_parser, &config);
6270 cfg_parser_destroy(&conf_parser);
6271 }
6272
6273 if (bindkeys_parser != NULL) {
6274 if (bindkeys != NULL)
6275 cfg_obj_destroy(bindkeys_parser, &bindkeys);
6276 cfg_parser_destroy(&bindkeys_parser);
6277 }
6278
6279 if (view != NULL)
6280 dns_view_detach(&view);
6281
6282 /*
6283 * This cleans up either the old production view list
6284 * or our temporary list depending on whether they
6285 * were swapped above or not.
6286 */
6287 for (view = ISC_LIST_HEAD(viewlist);
6288 view != NULL;
6289 view = view_next) {
6290 view_next = ISC_LIST_NEXT(view, link);
6291 ISC_LIST_UNLINK(viewlist, view, link);
6292 if (result == ISC_R_SUCCESS &&
6293 strcmp(view->name, "_bind") != 0)
6294 (void)dns_zt_apply(view->zonetable, ISC_FALSE,
6295 removed, view);
6296 dns_view_detach(&view);
6297 }
6298
6299 /* Same cleanup for cache list. */
6300 while ((nsc = ISC_LIST_HEAD(cachelist)) != NULL) {
6301 ISC_LIST_UNLINK(cachelist, nsc, link);
6302 dns_cache_detach(&nsc->cache);
6303 isc_mem_put(server->mctx, nsc, sizeof(*nsc));
6304 }
6305
6306 /*
6307 * Adjust the listening interfaces in accordance with the source
6308 * addresses specified in views and zones.
6309 */
6310 if (isc_net_probeipv6() == ISC_R_SUCCESS)
6311 adjust_interfaces(server, ns_g_mctx);
6312
6313 /*
6314 * Record the time of most recent configuration
6315 */
6316 tresult = isc_time_now(&ns_g_configtime);
6317 if (tresult != ISC_R_SUCCESS)
6318 ns_main_earlyfatal("isc_time_now() failed: %s",
6319 isc_result_totext(result));
6320
6321 /* Relinquish exclusive access to configuration data. */
6322 if (exclusive)
6323 isc_task_endexclusive(server->task);
6324
6325 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
6326 ISC_LOG_DEBUG(1), "load_configuration: %s",
6327 isc_result_totext(result));
6328
6329 return (result);
6330 }
6331
6332 static isc_result_t
6333 view_loaded(void *arg) {
6334 isc_result_t result;
6335 ns_zoneload_t *zl = (ns_zoneload_t *) arg;
6336 ns_server_t *server = zl->server;
6337 unsigned int refs;
6338
6339
6340 /*
6341 * Force zone maintenance. Do this after loading
6342 * so that we know when we need to force AXFR of
6343 * slave zones whose master files are missing.
6344 *
6345 * We use the zoneload reference counter to let us
6346 * know when all views are finished.
6347 */
6348 isc_refcount_decrement(&zl->refs, &refs);
6349 if (refs != 0)
6350 return (ISC_R_SUCCESS);
6351
6352 isc_refcount_destroy(&zl->refs);
6353 isc_mem_put(server->mctx, zl, sizeof (*zl));
6354
6355 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
6356 ISC_LOG_NOTICE, "all zones loaded");
6357 CHECKFATAL(dns_zonemgr_forcemaint(server->zonemgr),
6358 "forcing zone maintenance");
6359
6360 ns_os_started();
6361 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
6362 ISC_LOG_NOTICE, "running");
6363
6364 return (ISC_R_SUCCESS);
6365 }
6366
6367 static isc_result_t
6368 load_zones(ns_server_t *server, isc_boolean_t init) {
6369 isc_result_t result;
6370 dns_view_t *view;
6371 ns_zoneload_t *zl;
6372 unsigned int refs = 0;
6373
6374 zl = isc_mem_get(server->mctx, sizeof (*zl));
6375 if (zl == NULL)
6376 return (ISC_R_NOMEMORY);
6377 zl->server = server;
6378
6379 result = isc_task_beginexclusive(server->task);
6380 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6381
6382 isc_refcount_init(&zl->refs, 1);
6383
6384 /*
6385 * Schedule zones to be loaded from disk.
6386 */
6387 for (view = ISC_LIST_HEAD(server->viewlist);
6388 view != NULL;
6389 view = ISC_LIST_NEXT(view, link))
6390 {
6391 if (view->managed_keys != NULL) {
6392 result = dns_zone_load(view->managed_keys);
6393 if (result != ISC_R_SUCCESS &&
6394 result != DNS_R_UPTODATE &&
6395 result != DNS_R_CONTINUE)
6396 goto cleanup;
6397 }
6398 if (view->redirect != NULL) {
6399 result = dns_zone_load(view->redirect);
6400 if (result != ISC_R_SUCCESS &&
6401 result != DNS_R_UPTODATE &&
6402 result != DNS_R_CONTINUE)
6403 goto cleanup;
6404 }
6405
6406 /*
6407 * 'dns_view_asyncload' calls view_loaded if there are no
6408 * zones.
6409 */
6410 isc_refcount_increment(&zl->refs, NULL);
6411 CHECK(dns_view_asyncload(view, view_loaded, zl));
6412 }
6413
6414 cleanup:
6415 isc_refcount_decrement(&zl->refs, &refs);
6416 if (refs == 0) {
6417 isc_refcount_destroy(&zl->refs);
6418 isc_mem_put(server->mctx, zl, sizeof (*zl));
6419 } else if (init) {
6420 /*
6421 * Place the task manager into privileged mode. This
6422 * ensures that after we leave task-exclusive mode, no
6423 * other tasks will be able to run except for the ones
6424 * that are loading zones. (This should only be done during
6425 * the initial server setup; it isn't necessary during
6426 * a reload.)
6427 */
6428 isc_taskmgr_setmode(ns_g_taskmgr, isc_taskmgrmode_privileged);
6429 }
6430
6431 isc_task_endexclusive(server->task);
6432 return (result);
6433 }
6434
6435 static isc_result_t
6436 load_new_zones(ns_server_t *server, isc_boolean_t stop) {
6437 isc_result_t result;
6438 dns_view_t *view;
6439
6440 result = isc_task_beginexclusive(server->task);
6441 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6442
6443 /*
6444 * Load zone data from disk.
6445 */
6446 for (view = ISC_LIST_HEAD(server->viewlist);
6447 view != NULL;
6448 view = ISC_LIST_NEXT(view, link))
6449 {
6450 CHECK(dns_view_loadnew(view, stop));
6451
6452 /* Load managed-keys data */
6453 if (view->managed_keys != NULL)
6454 CHECK(dns_zone_loadnew(view->managed_keys));
6455 if (view->redirect != NULL)
6456 CHECK(dns_zone_loadnew(view->redirect));
6457 }
6458
6459 /*
6460 * Resume zone XFRs.
6461 */
6462 dns_zonemgr_resumexfrs(server->zonemgr);
6463 cleanup:
6464 isc_task_endexclusive(server->task);
6465 return (result);
6466 }
6467
6468 static void
6469 run_server(isc_task_t *task, isc_event_t *event) {
6470 isc_result_t result;
6471 ns_server_t *server = (ns_server_t *)event->ev_arg;
6472
6473 INSIST(task == server->task);
6474
6475 isc_event_free(&event);
6476
6477 CHECKFATAL(dns_dispatchmgr_create(ns_g_mctx, ns_g_entropy,
6478 &ns_g_dispatchmgr),
6479 "creating dispatch manager");
6480
6481 dns_dispatchmgr_setstats(ns_g_dispatchmgr, server->resolverstats);
6482
6483 CHECKFATAL(ns_interfacemgr_create(ns_g_mctx, ns_g_taskmgr,
6484 ns_g_socketmgr, ns_g_dispatchmgr,
6485 server->task, &server->interfacemgr),
6486 "creating interface manager");
6487
6488 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
6489 NULL, NULL, server->task,
6490 interface_timer_tick,
6491 server, &server->interface_timer),
6492 "creating interface timer");
6493
6494 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
6495 NULL, NULL, server->task,
6496 heartbeat_timer_tick,
6497 server, &server->heartbeat_timer),
6498 "creating heartbeat timer");
6499
6500 CHECKFATAL(isc_timer_create(ns_g_timermgr, isc_timertype_inactive,
6501 NULL, NULL, server->task, pps_timer_tick,
6502 server, &server->pps_timer),
6503 "creating pps timer");
6504
6505 CHECKFATAL(cfg_parser_create(ns_g_mctx, NULL, &ns_g_parser),
6506 "creating default configuration parser");
6507
6508 if (ns_g_lwresdonly)
6509 CHECKFATAL(load_configuration(lwresd_g_conffile, server,
6510 ISC_TRUE),
6511 "loading configuration");
6512 else
6513 CHECKFATAL(load_configuration(ns_g_conffile, server, ISC_TRUE),
6514 "loading configuration");
6515
6516 isc_hash_init();
6517
6518 CHECKFATAL(load_zones(server, ISC_TRUE), "loading zones");
6519 }
6520
6521 void
6522 ns_server_flushonshutdown(ns_server_t *server, isc_boolean_t flush) {
6523
6524 REQUIRE(NS_SERVER_VALID(server));
6525
6526 server->flushonshutdown = flush;
6527 }
6528
6529 static void
6530 shutdown_server(isc_task_t *task, isc_event_t *event) {
6531 isc_result_t result;
6532 dns_view_t *view, *view_next;
6533 ns_server_t *server = (ns_server_t *)event->ev_arg;
6534 isc_boolean_t flush = server->flushonshutdown;
6535 ns_cache_t *nsc;
6536
6537 UNUSED(task);
6538 INSIST(task == server->task);
6539
6540 result = isc_task_beginexclusive(server->task);
6541 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6542
6543 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
6544 ISC_LOG_INFO, "shutting down%s",
6545 flush ? ": flushing changes" : "");
6546
6547 ns_statschannels_shutdown(server);
6548 ns_controls_shutdown(server->controls);
6549 end_reserved_dispatches(server, ISC_TRUE);
6550 cleanup_session_key(server, server->mctx);
6551
6552 if (ns_g_aclconfctx != NULL)
6553 cfg_aclconfctx_detach(&ns_g_aclconfctx);
6554
6555 cfg_obj_destroy(ns_g_parser, &ns_g_config);
6556 cfg_parser_destroy(&ns_g_parser);
6557
6558 for (view = ISC_LIST_HEAD(server->viewlist);
6559 view != NULL;
6560 view = view_next) {
6561 view_next = ISC_LIST_NEXT(view, link);
6562 ISC_LIST_UNLINK(server->viewlist, view, link);
6563 if (flush)
6564 dns_view_flushanddetach(&view);
6565 else
6566 dns_view_detach(&view);
6567 }
6568
6569 while ((nsc = ISC_LIST_HEAD(server->cachelist)) != NULL) {
6570 ISC_LIST_UNLINK(server->cachelist, nsc, link);
6571 dns_cache_detach(&nsc->cache);
6572 isc_mem_put(server->mctx, nsc, sizeof(*nsc));
6573 }
6574
6575 isc_timer_detach(&server->interface_timer);
6576 isc_timer_detach(&server->heartbeat_timer);
6577 isc_timer_detach(&server->pps_timer);
6578
6579 ns_interfacemgr_shutdown(server->interfacemgr);
6580 ns_interfacemgr_detach(&server->interfacemgr);
6581
6582 dns_dispatchmgr_destroy(&ns_g_dispatchmgr);
6583
6584 dns_zonemgr_shutdown(server->zonemgr);
6585
6586 if (ns_g_sessionkey != NULL) {
6587 dns_tsigkey_detach(&ns_g_sessionkey);
6588 dns_name_free(&ns_g_sessionkeyname, server->mctx);
6589 }
6590
6591 if (server->blackholeacl != NULL)
6592 dns_acl_detach(&server->blackholeacl);
6593
6594 #ifdef HAVE_GEOIP
6595 dns_geoip_shutdown();
6596 #endif
6597
6598 dns_db_detach(&server->in_roothints);
6599
6600 isc_task_endexclusive(server->task);
6601
6602 isc_task_detach(&server->task);
6603
6604 isc_event_free(&event);
6605 }
6606
6607 void
6608 ns_server_create(isc_mem_t *mctx, ns_server_t **serverp) {
6609 isc_result_t result;
6610 ns_server_t *server = isc_mem_get(mctx, sizeof(*server));
6611
6612 if (server == NULL)
6613 fatal("allocating server object", ISC_R_NOMEMORY);
6614
6615 server->mctx = mctx;
6616 server->task = NULL;
6617
6618 /* Initialize configuration data with default values. */
6619 result = isc_quota_init(&server->xfroutquota, 10);
6620 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6621 result = isc_quota_init(&server->tcpquota, 10);
6622 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6623 result = isc_quota_init(&server->recursionquota, 100);
6624 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6625
6626
6627 result = dns_aclenv_init(mctx, &server->aclenv);
6628 RUNTIME_CHECK(result == ISC_R_SUCCESS);
6629
6630 #ifdef HAVE_GEOIP
6631 /* Initialize GeoIP before using ACL environment */
6632 ns_geoip_init();
6633 server->aclenv.geoip = ns_g_geoip;
6634 #endif
6635
6636 /* Initialize server data structures. */
6637 server->zonemgr = NULL;
6638 server->interfacemgr = NULL;
6639 ISC_LIST_INIT(server->viewlist);
6640 server->in_roothints = NULL;
6641 server->blackholeacl = NULL;
6642
6643 /* Must be first. */
6644 CHECKFATAL(dst_lib_init2(ns_g_mctx, ns_g_entropy,
6645 ns_g_engine, ISC_ENTROPY_GOODONLY),
6646 "initializing DST");
6647
6648 CHECKFATAL(dns_rootns_create(mctx, dns_rdataclass_in, NULL,
6649 &server->in_roothints),
6650 "setting up root hints");
6651
6652 CHECKFATAL(isc_mutex_init(&server->reload_event_lock),
6653 "initializing reload event lock");
6654 server->reload_event =
6655 isc_event_allocate(ns_g_mctx, server,
6656 NS_EVENT_RELOAD,
6657 ns_server_reload,
6658 server,
6659 sizeof(isc_event_t));
6660 CHECKFATAL(server->reload_event == NULL ?
6661 ISC_R_NOMEMORY : ISC_R_SUCCESS,
6662 "allocating reload event");
6663
6664 server->tkeyctx = NULL;
6665 CHECKFATAL(dns_tkeyctx_create(ns_g_mctx, ns_g_entropy,
6666 &server->tkeyctx),
6667 "creating TKEY context");
6668
6669 /*
6670 * Setup the server task, which is responsible for coordinating
6671 * startup and shutdown of the server, as well as all exclusive
6672 * tasks.
6673 */
6674 CHECKFATAL(isc_task_create(ns_g_taskmgr, 0, &server->task),
6675 "creating server task");
6676 isc_task_setname(server->task, "server", server);
6677 isc_taskmgr_setexcltask(ns_g_taskmgr, server->task);
6678 CHECKFATAL(isc_task_onshutdown(server->task, shutdown_server, server),
6679 "isc_task_onshutdown");
6680 CHECKFATAL(isc_app_onrun(ns_g_mctx, server->task, run_server, server),
6681 "isc_app_onrun");
6682
6683 server->interface_timer = NULL;
6684 server->heartbeat_timer = NULL;
6685 server->pps_timer = NULL;
6686
6687 server->interface_interval = 0;
6688 server->heartbeat_interval = 0;
6689
6690 CHECKFATAL(dns_zonemgr_create(ns_g_mctx, ns_g_taskmgr, ns_g_timermgr,
6691 ns_g_socketmgr, &server->zonemgr),
6692 "dns_zonemgr_create");
6693 CHECKFATAL(dns_zonemgr_setsize(server->zonemgr, 1000),
6694 "dns_zonemgr_setsize");
6695
6696 server->statsfile = isc_mem_strdup(server->mctx, "named.stats");
6697 CHECKFATAL(server->statsfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
6698 "isc_mem_strdup");
6699 server->nsstats = NULL;
6700 server->rcvquerystats = NULL;
6701 server->opcodestats = NULL;
6702 server->zonestats = NULL;
6703 server->resolverstats = NULL;
6704 server->sockstats = NULL;
6705 CHECKFATAL(isc_stats_create(server->mctx, &server->sockstats,
6706 isc_sockstatscounter_max),
6707 "isc_stats_create");
6708 isc_socketmgr_setstats(ns_g_socketmgr, server->sockstats);
6709
6710 server->bindkeysfile = isc_mem_strdup(server->mctx, "bind.keys");
6711 CHECKFATAL(server->bindkeysfile == NULL ? ISC_R_NOMEMORY :
6712 ISC_R_SUCCESS,
6713 "isc_mem_strdup");
6714
6715 server->dumpfile = isc_mem_strdup(server->mctx, "named_dump.db");
6716 CHECKFATAL(server->dumpfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
6717 "isc_mem_strdup");
6718
6719 server->secrootsfile = isc_mem_strdup(server->mctx, "named.secroots");
6720 CHECKFATAL(server->secrootsfile == NULL ? ISC_R_NOMEMORY :
6721 ISC_R_SUCCESS,
6722 "isc_mem_strdup");
6723
6724 server->recfile = isc_mem_strdup(server->mctx, "named.recursing");
6725 CHECKFATAL(server->recfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS,
6726 "isc_mem_strdup");
6727
6728 server->hostname_set = ISC_FALSE;
6729 server->hostname = NULL;
6730 server->version_set = ISC_FALSE;
6731 server->version = NULL;
6732 server->server_usehostname = ISC_FALSE;
6733 server->server_id = NULL;
6734
6735 CHECKFATAL(isc_stats_create(ns_g_mctx, &server->nsstats,
6736 dns_nsstatscounter_max),
6737 "dns_stats_create (server)");
6738
6739 CHECKFATAL(dns_rdatatypestats_create(ns_g_mctx,
6740 &server->rcvquerystats),
6741 "dns_stats_create (rcvquery)");
6742
6743 CHECKFATAL(dns_opcodestats_create(ns_g_mctx, &server->opcodestats),
6744 "dns_stats_create (opcode)");
6745
6746 CHECKFATAL(isc_stats_create(ns_g_mctx, &server->zonestats,
6747 dns_zonestatscounter_max),
6748 "dns_stats_create (zone)");
6749
6750 CHECKFATAL(isc_stats_create(ns_g_mctx, &server->resolverstats,
6751 dns_resstatscounter_max),
6752 "dns_stats_create (resolver)");
6753
6754 server->flushonshutdown = ISC_FALSE;
6755 server->log_queries = ISC_FALSE;
6756
6757 server->controls = NULL;
6758 CHECKFATAL(ns_controls_create(server, &server->controls),
6759 "ns_controls_create");
6760 server->dispatchgen = 0;
6761 ISC_LIST_INIT(server->dispatches);
6762
6763 ISC_LIST_INIT(server->statschannels);
6764
6765 ISC_LIST_INIT(server->cachelist);
6766
6767 server->sessionkey = NULL;
6768 server->session_keyfile = NULL;
6769 server->session_keyname = NULL;
6770 server->session_keyalg = DST_ALG_UNKNOWN;
6771 server->session_keybits = 0;
6772
6773 server->magic = NS_SERVER_MAGIC;
6774 *serverp = server;
6775 }
6776
6777 void
6778 ns_server_destroy(ns_server_t **serverp) {
6779 ns_server_t *server = *serverp;
6780 REQUIRE(NS_SERVER_VALID(server));
6781
6782 ns_controls_destroy(&server->controls);
6783
6784 isc_stats_detach(&server->nsstats);
6785 dns_stats_detach(&server->rcvquerystats);
6786 dns_stats_detach(&server->opcodestats);
6787 isc_stats_detach(&server->zonestats);
6788 isc_stats_detach(&server->resolverstats);
6789 isc_stats_detach(&server->sockstats);
6790
6791 isc_mem_free(server->mctx, server->statsfile);
6792 isc_mem_free(server->mctx, server->bindkeysfile);
6793 isc_mem_free(server->mctx, server->dumpfile);
6794 isc_mem_free(server->mctx, server->secrootsfile);
6795 isc_mem_free(server->mctx, server->recfile);
6796
6797 if (server->version != NULL)
6798 isc_mem_free(server->mctx, server->version);
6799 if (server->hostname != NULL)
6800 isc_mem_free(server->mctx, server->hostname);
6801 if (server->server_id != NULL)
6802 isc_mem_free(server->mctx, server->server_id);
6803
6804 if (server->zonemgr != NULL)
6805 dns_zonemgr_detach(&server->zonemgr);
6806
6807 if (server->tkeyctx != NULL)
6808 dns_tkeyctx_destroy(&server->tkeyctx);
6809
6810 dst_lib_destroy();
6811
6812 isc_event_free(&server->reload_event);
6813
6814 INSIST(ISC_LIST_EMPTY(server->viewlist));
6815 INSIST(ISC_LIST_EMPTY(server->cachelist));
6816
6817 dns_aclenv_destroy(&server->aclenv);
6818
6819 isc_quota_destroy(&server->recursionquota);
6820 isc_quota_destroy(&server->tcpquota);
6821 isc_quota_destroy(&server->xfroutquota);
6822
6823 server->magic = 0;
6824 isc_mem_put(server->mctx, server, sizeof(*server));
6825 *serverp = NULL;
6826 }
6827
6828 static void
6829 fatal(const char *msg, isc_result_t result) {
6830 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
6831 ISC_LOG_CRITICAL, "%s: %s", msg,
6832 isc_result_totext(result));
6833 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
6834 ISC_LOG_CRITICAL, "exiting (due to fatal error)");
6835 exit(1);
6836 }
6837
6838 static void
6839 start_reserved_dispatches(ns_server_t *server) {
6840
6841 REQUIRE(NS_SERVER_VALID(server));
6842
6843 server->dispatchgen++;
6844 }
6845
6846 static void
6847 end_reserved_dispatches(ns_server_t *server, isc_boolean_t all) {
6848 ns_dispatch_t *dispatch, *nextdispatch;
6849
6850 REQUIRE(NS_SERVER_VALID(server));
6851
6852 for (dispatch = ISC_LIST_HEAD(server->dispatches);
6853 dispatch != NULL;
6854 dispatch = nextdispatch) {
6855 nextdispatch = ISC_LIST_NEXT(dispatch, link);
6856 if (!all && server->dispatchgen == dispatch-> dispatchgen)
6857 continue;
6858 ISC_LIST_UNLINK(server->dispatches, dispatch, link);
6859 dns_dispatch_detach(&dispatch->dispatch);
6860 isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
6861 }
6862 }
6863
6864 void
6865 ns_add_reserved_dispatch(ns_server_t *server, const isc_sockaddr_t *addr) {
6866 ns_dispatch_t *dispatch;
6867 in_port_t port;
6868 char addrbuf[ISC_SOCKADDR_FORMATSIZE];
6869 isc_result_t result;
6870 unsigned int attrs, attrmask;
6871
6872 REQUIRE(NS_SERVER_VALID(server));
6873
6874 port = isc_sockaddr_getport(addr);
6875 if (port == 0 || port >= 1024)
6876 return;
6877
6878 for (dispatch = ISC_LIST_HEAD(server->dispatches);
6879 dispatch != NULL;
6880 dispatch = ISC_LIST_NEXT(dispatch, link)) {
6881 if (isc_sockaddr_equal(&dispatch->addr, addr))
6882 break;
6883 }
6884 if (dispatch != NULL) {
6885 dispatch->dispatchgen = server->dispatchgen;
6886 return;
6887 }
6888
6889 dispatch = isc_mem_get(server->mctx, sizeof(*dispatch));
6890 if (dispatch == NULL) {
6891 result = ISC_R_NOMEMORY;
6892 goto cleanup;
6893 }
6894
6895 dispatch->addr = *addr;
6896 dispatch->dispatchgen = server->dispatchgen;
6897 dispatch->dispatch = NULL;
6898
6899 attrs = 0;
6900 attrs |= DNS_DISPATCHATTR_UDP;
6901 switch (isc_sockaddr_pf(addr)) {
6902 case AF_INET:
6903 attrs |= DNS_DISPATCHATTR_IPV4;
6904 break;
6905 case AF_INET6:
6906 attrs |= DNS_DISPATCHATTR_IPV6;
6907 break;
6908 default:
6909 result = ISC_R_NOTIMPLEMENTED;
6910 goto cleanup;
6911 }
6912 attrmask = 0;
6913 attrmask |= DNS_DISPATCHATTR_UDP;
6914 attrmask |= DNS_DISPATCHATTR_TCP;
6915 attrmask |= DNS_DISPATCHATTR_IPV4;
6916 attrmask |= DNS_DISPATCHATTR_IPV6;
6917
6918 result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
6919 ns_g_taskmgr, &dispatch->addr, 4096,
6920 UDPBUFFERS, 32768, 16411, 16433,
6921 attrs, attrmask, &dispatch->dispatch);
6922 if (result != ISC_R_SUCCESS)
6923 goto cleanup;
6924
6925 ISC_LIST_INITANDPREPEND(server->dispatches, dispatch, link);
6926
6927 return;
6928
6929 cleanup:
6930 if (dispatch != NULL)
6931 isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
6932 isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf));
6933 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6934 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
6935 "unable to create dispatch for reserved port %s: %s",
6936 addrbuf, isc_result_totext(result));
6937 }
6938
6939
6940 static isc_result_t
6941 loadconfig(ns_server_t *server) {
6942 isc_result_t result;
6943 start_reserved_dispatches(server);
6944 result = load_configuration(ns_g_lwresdonly ?
6945 lwresd_g_conffile : ns_g_conffile,
6946 server, ISC_FALSE);
6947 if (result == ISC_R_SUCCESS) {
6948 end_reserved_dispatches(server, ISC_FALSE);
6949 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6950 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
6951 "reloading configuration succeeded");
6952 } else {
6953 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6954 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
6955 "reloading configuration failed: %s",
6956 isc_result_totext(result));
6957 }
6958
6959 return (result);
6960 }
6961
6962 static isc_result_t
6963 reload(ns_server_t *server) {
6964 isc_result_t result;
6965 CHECK(loadconfig(server));
6966
6967 result = load_zones(server, ISC_FALSE);
6968 if (result == ISC_R_SUCCESS)
6969 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6970 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
6971 "reloading zones succeeded");
6972 else
6973 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6974 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
6975 "reloading zones failed: %s",
6976 isc_result_totext(result));
6977
6978 cleanup:
6979 return (result);
6980 }
6981
6982 static void
6983 reconfig(ns_server_t *server) {
6984 isc_result_t result;
6985 CHECK(loadconfig(server));
6986
6987 result = load_new_zones(server, ISC_FALSE);
6988 if (result == ISC_R_SUCCESS)
6989 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6990 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
6991 "any newly configured zones are now loaded");
6992 else
6993 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
6994 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
6995 "loading new zones failed: %s",
6996 isc_result_totext(result));
6997
6998 cleanup: ;
6999 }
7000
7001 /*
7002 * Handle a reload event (from SIGHUP).
7003 */
7004 static void
7005 ns_server_reload(isc_task_t *task, isc_event_t *event) {
7006 ns_server_t *server = (ns_server_t *)event->ev_arg;
7007
7008 INSIST(task = server->task);
7009 UNUSED(task);
7010
7011 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7012 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7013 "received SIGHUP signal to reload zones");
7014 (void)reload(server);
7015
7016 LOCK(&server->reload_event_lock);
7017 INSIST(server->reload_event == NULL);
7018 server->reload_event = event;
7019 UNLOCK(&server->reload_event_lock);
7020 }
7021
7022 void
7023 ns_server_reloadwanted(ns_server_t *server) {
7024 LOCK(&server->reload_event_lock);
7025 if (server->reload_event != NULL)
7026 isc_task_send(server->task, &server->reload_event);
7027 UNLOCK(&server->reload_event_lock);
7028 }
7029
7030 void
7031 ns_server_scan_interfaces(ns_server_t *server) {
7032 isc_result_t result;
7033
7034 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7035 NS_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
7036 "automatic interface rescan");
7037
7038 result = isc_task_beginexclusive(server->task);
7039 RUNTIME_CHECK(result == ISC_R_SUCCESS);
7040 scan_interfaces(server, ISC_TRUE);
7041 isc_task_endexclusive(server->task);
7042 }
7043
7044 static char *
7045 next_token(char **stringp, const char *delim) {
7046 char *res;
7047
7048 do {
7049 res = strsep(stringp, delim);
7050 if (res == NULL)
7051 break;
7052 } while (*res == '\0');
7053 return (res);
7054 }
7055
7056 /*
7057 * Find the zone specified in the control channel command 'args',
7058 * if any. If a zone is specified, point '*zonep' at it, otherwise
7059 * set '*zonep' to NULL.
7060 *
7061 * If 'zonetxt' is set, the caller has already pulled a token
7062 * off the command line that is to be used as the zone name. (This
7063 * is done when it's necessary to check for an optional argument
7064 * before the zone name, as in "rndc sync [-clean] zone".)
7065 */
7066 static isc_result_t
7067 zone_from_args(ns_server_t *server, char *args, const char *zonetxt,
7068 dns_zone_t **zonep, const char **zonename,
7069 isc_buffer_t *text, isc_boolean_t skip)
7070 {
7071 char *input, *ptr;
7072 char *classtxt;
7073 const char *viewtxt = NULL;
7074 dns_fixedname_t fname;
7075 dns_name_t *name;
7076 isc_result_t result;
7077 dns_view_t *view = NULL;
7078 dns_rdataclass_t rdclass;
7079 char problem[DNS_NAME_FORMATSIZE + 500] = "";
7080
7081 REQUIRE(zonep != NULL && *zonep == NULL);
7082 REQUIRE(zonename == NULL || *zonename == NULL);
7083
7084 input = args;
7085
7086 if (skip) {
7087 /* Skip the command name. */
7088 ptr = next_token(&input, " \t");
7089 if (ptr == NULL)
7090 return (ISC_R_UNEXPECTEDEND);
7091 }
7092
7093 /* Look for the zone name. */
7094 if (zonetxt == NULL)
7095 zonetxt = next_token(&input, " \t");
7096 if (zonetxt == NULL)
7097 return (ISC_R_SUCCESS);
7098 if (zonename != NULL)
7099 *zonename = zonetxt;
7100
7101 /* Look for the optional class name. */
7102 classtxt = next_token(&input, " \t");
7103 if (classtxt != NULL) {
7104 /* Look for the optional view name. */
7105 viewtxt = next_token(&input, " \t");
7106 }
7107
7108 dns_fixedname_init(&fname);
7109 name = dns_fixedname_name(&fname);
7110 CHECK(dns_name_fromstring(name, zonetxt, 0, NULL));
7111
7112 if (classtxt != NULL) {
7113 isc_textregion_t r;
7114 r.base = classtxt;
7115 r.length = strlen(classtxt);
7116 CHECK(dns_rdataclass_fromtext(&rdclass, &r));
7117 } else
7118 rdclass = dns_rdataclass_in;
7119
7120 if (viewtxt == NULL) {
7121 result = dns_viewlist_findzone(&server->viewlist, name,
7122 ISC_TF(classtxt == NULL),
7123 rdclass, zonep);
7124 if (result == ISC_R_NOTFOUND)
7125 snprintf(problem, sizeof(problem),
7126 "no matching zone '%s' in any view",
7127 zonetxt);
7128 else if (result == ISC_R_MULTIPLE)
7129 snprintf(problem, sizeof(problem),
7130 "zone '%s' was found in multiple views",
7131 zonetxt);
7132 } else {
7133 result = dns_viewlist_find(&server->viewlist, viewtxt,
7134 rdclass, &view);
7135 if (result != ISC_R_SUCCESS) {
7136 snprintf(problem, sizeof(problem),
7137 "no matching view '%s'", viewtxt);
7138 goto report;
7139 }
7140
7141 result = dns_zt_find(view->zonetable, name, 0, NULL, zonep);
7142 if (result != ISC_R_SUCCESS)
7143 snprintf(problem, sizeof(problem),
7144 "no matching zone '%s' in view '%s'",
7145 zonetxt, viewtxt);
7146 }
7147
7148 /* Partial match? */
7149 if (result != ISC_R_SUCCESS && *zonep != NULL)
7150 dns_zone_detach(zonep);
7151 if (result == DNS_R_PARTIALMATCH)
7152 result = ISC_R_NOTFOUND;
7153 report:
7154 if (result != ISC_R_SUCCESS) {
7155 isc_result_t tresult;
7156
7157 tresult = putstr(text, problem);
7158 if (tresult == ISC_R_SUCCESS)
7159 (void) putnull(text);
7160 }
7161
7162 cleanup:
7163 if (view != NULL)
7164 dns_view_detach(&view);
7165
7166 return (result);
7167 }
7168
7169 /*
7170 * Act on a "retransfer" command from the command channel.
7171 */
7172 isc_result_t
7173 ns_server_retransfercommand(ns_server_t *server, char *args,
7174 isc_buffer_t *text)
7175 {
7176 isc_result_t result;
7177 dns_zone_t *zone = NULL;
7178 dns_zone_t *raw = NULL;
7179 dns_zonetype_t type;
7180
7181 result = zone_from_args(server, args, NULL, &zone, NULL,
7182 text, ISC_TRUE);
7183 if (result != ISC_R_SUCCESS)
7184 return (result);
7185 if (zone == NULL)
7186 return (ISC_R_UNEXPECTEDEND);
7187 dns_zone_getraw(zone, &raw);
7188 if (raw != NULL) {
7189 dns_zone_detach(&zone);
7190 dns_zone_attach(raw, &zone);
7191 dns_zone_detach(&raw);
7192 }
7193 type = dns_zone_gettype(zone);
7194 if (type == dns_zone_slave || type == dns_zone_stub)
7195 dns_zone_forcereload(zone);
7196 else
7197 result = ISC_R_NOTFOUND;
7198 dns_zone_detach(&zone);
7199 return (result);
7200 }
7201
7202 /*
7203 * Act on a "reload" command from the command channel.
7204 */
7205 isc_result_t
7206 ns_server_reloadcommand(ns_server_t *server, char *args, isc_buffer_t *text) {
7207 isc_result_t result;
7208 dns_zone_t *zone = NULL;
7209 dns_zonetype_t type;
7210 const char *msg = NULL;
7211
7212 result = zone_from_args(server, args, NULL, &zone, NULL,
7213 text, ISC_TRUE);
7214 if (result != ISC_R_SUCCESS)
7215 return (result);
7216 if (zone == NULL) {
7217 result = reload(server);
7218 if (result == ISC_R_SUCCESS)
7219 msg = "server reload successful";
7220 } else {
7221 type = dns_zone_gettype(zone);
7222 if (type == dns_zone_slave || type == dns_zone_stub) {
7223 dns_zone_refresh(zone);
7224 dns_zone_detach(&zone);
7225 msg = "zone refresh queued";
7226 } else {
7227 result = dns_zone_load(zone);
7228 dns_zone_detach(&zone);
7229 switch (result) {
7230 case ISC_R_SUCCESS:
7231 msg = "zone reload successful";
7232 break;
7233 case DNS_R_CONTINUE:
7234 msg = "zone reload queued";
7235 result = ISC_R_SUCCESS;
7236 break;
7237 case DNS_R_UPTODATE:
7238 msg = "zone reload up-to-date";
7239 result = ISC_R_SUCCESS;
7240 break;
7241 default:
7242 /* failure message will be generated by rndc */
7243 break;
7244 }
7245 }
7246 }
7247 if (msg != NULL && strlen(msg) < isc_buffer_availablelength(text))
7248 isc_buffer_putmem(text, (const unsigned char *)msg,
7249 strlen(msg) + 1);
7250 return (result);
7251 }
7252
7253 /*
7254 * Act on a "reconfig" command from the command channel.
7255 */
7256 isc_result_t
7257 ns_server_reconfigcommand(ns_server_t *server, char *args) {
7258 UNUSED(args);
7259
7260 reconfig(server);
7261 return (ISC_R_SUCCESS);
7262 }
7263
7264 /*
7265 * Act on a "notify" command from the command channel.
7266 */
7267 isc_result_t
7268 ns_server_notifycommand(ns_server_t *server, char *args, isc_buffer_t *text) {
7269 isc_result_t result;
7270 dns_zone_t *zone = NULL;
7271 const unsigned char msg[] = "zone notify queued";
7272
7273 result = zone_from_args(server, args, NULL, &zone, NULL,
7274 text, ISC_TRUE);
7275 if (result != ISC_R_SUCCESS)
7276 return (result);
7277 if (zone == NULL)
7278 return (ISC_R_UNEXPECTEDEND);
7279
7280 dns_zone_notify(zone);
7281 dns_zone_detach(&zone);
7282 if (sizeof(msg) <= isc_buffer_availablelength(text))
7283 isc_buffer_putmem(text, msg, sizeof(msg));
7284
7285 return (ISC_R_SUCCESS);
7286 }
7287
7288 /*
7289 * Act on a "refresh" command from the command channel.
7290 */
7291 isc_result_t
7292 ns_server_refreshcommand(ns_server_t *server, char *args, isc_buffer_t *text) {
7293 isc_result_t result;
7294 dns_zone_t *zone = NULL, *raw = NULL;
7295 const unsigned char msg1[] = "zone refresh queued";
7296 const unsigned char msg2[] = "not a slave or stub zone";
7297 dns_zonetype_t type;
7298
7299 result = zone_from_args(server, args, NULL, &zone, NULL,
7300 text, ISC_TRUE);
7301 if (result != ISC_R_SUCCESS)
7302 return (result);
7303 if (zone == NULL)
7304 return (ISC_R_UNEXPECTEDEND);
7305
7306 dns_zone_getraw(zone, &raw);
7307 if (raw != NULL) {
7308 dns_zone_detach(&zone);
7309 dns_zone_attach(raw, &zone);
7310 dns_zone_detach(&raw);
7311 }
7312
7313 type = dns_zone_gettype(zone);
7314 if (type == dns_zone_slave || type == dns_zone_stub) {
7315 dns_zone_refresh(zone);
7316 dns_zone_detach(&zone);
7317 if (sizeof(msg1) <= isc_buffer_availablelength(text))
7318 isc_buffer_putmem(text, msg1, sizeof(msg1));
7319 return (ISC_R_SUCCESS);
7320 }
7321
7322 dns_zone_detach(&zone);
7323 if (sizeof(msg2) <= isc_buffer_availablelength(text))
7324 isc_buffer_putmem(text, msg2, sizeof(msg2));
7325 return (ISC_R_FAILURE);
7326 }
7327
7328 isc_result_t
7329 ns_server_togglequerylog(ns_server_t *server, char *args) {
7330 isc_boolean_t value;
7331 char *ptr;
7332
7333 /* Skip the command name. */
7334 ptr = next_token(&args, " \t");
7335 if (ptr == NULL)
7336 return (ISC_R_UNEXPECTEDEND);
7337
7338 ptr = next_token(&args, " \t");
7339 if (ptr == NULL)
7340 value = server->log_queries ? ISC_FALSE : ISC_TRUE;
7341 else if (strcasecmp(ptr, "yes") == 0 || strcasecmp(ptr, "on") == 0)
7342 value = ISC_TRUE;
7343 else if (strcasecmp(ptr, "no") == 0 || strcasecmp(ptr, "off") == 0)
7344 value = ISC_FALSE;
7345 else
7346 return (ISC_R_NOTFOUND);
7347
7348 if (server->log_queries == value)
7349 return (ISC_R_SUCCESS);
7350
7351 server->log_queries = value;
7352
7353 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7354 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7355 "query logging is now %s",
7356 server->log_queries ? "on" : "off");
7357 return (ISC_R_SUCCESS);
7358 }
7359
7360 static isc_result_t
7361 ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
7362 cfg_aclconfctx_t *actx, isc_mem_t *mctx,
7363 isc_uint16_t family, ns_listenlist_t **target)
7364 {
7365 isc_result_t result;
7366 const cfg_listelt_t *element;
7367 ns_listenlist_t *dlist = NULL;
7368
7369 REQUIRE(target != NULL && *target == NULL);
7370
7371 result = ns_listenlist_create(mctx, &dlist);
7372 if (result != ISC_R_SUCCESS)
7373 return (result);
7374
7375 for (element = cfg_list_first(listenlist);
7376 element != NULL;
7377 element = cfg_list_next(element))
7378 {
7379 ns_listenelt_t *delt = NULL;
7380 const cfg_obj_t *listener = cfg_listelt_value(element);
7381 result = ns_listenelt_fromconfig(listener, config, actx,
7382 mctx, family, &delt);
7383 if (result != ISC_R_SUCCESS)
7384 goto cleanup;
7385 ISC_LIST_APPEND(dlist->elts, delt, link);
7386 }
7387 *target = dlist;
7388 return (ISC_R_SUCCESS);
7389
7390 cleanup:
7391 ns_listenlist_detach(&dlist);
7392 return (result);
7393 }
7394
7395 /*
7396 * Create a listen list from the corresponding configuration
7397 * data structure.
7398 */
7399 static isc_result_t
7400 ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
7401 cfg_aclconfctx_t *actx, isc_mem_t *mctx,
7402 isc_uint16_t family, ns_listenelt_t **target)
7403 {
7404 isc_result_t result;
7405 const cfg_obj_t *portobj, *dscpobj;
7406 in_port_t port;
7407 isc_dscp_t dscp = -1;
7408 ns_listenelt_t *delt = NULL;
7409 REQUIRE(target != NULL && *target == NULL);
7410
7411 portobj = cfg_tuple_get(listener, "port");
7412 if (!cfg_obj_isuint32(portobj)) {
7413 if (ns_g_port != 0) {
7414 port = ns_g_port;
7415 } else {
7416 result = ns_config_getport(config, &port);
7417 if (result != ISC_R_SUCCESS)
7418 return (result);
7419 }
7420 } else {
7421 if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
7422 cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
7423 "port value '%u' is out of range",
7424 cfg_obj_asuint32(portobj));
7425 return (ISC_R_RANGE);
7426 }
7427 port = (in_port_t)cfg_obj_asuint32(portobj);
7428 }
7429
7430 dscpobj = cfg_tuple_get(listener, "dscp");
7431 if (!cfg_obj_isuint32(dscpobj))
7432 dscp = ns_g_dscp;
7433 else {
7434 if (cfg_obj_asuint32(dscpobj) > 63) {
7435 cfg_obj_log(dscpobj, ns_g_lctx, ISC_LOG_ERROR,
7436 "dscp value '%u' is out of range",
7437 cfg_obj_asuint32(dscpobj));
7438 return (ISC_R_RANGE);
7439 }
7440 dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
7441 }
7442
7443 result = ns_listenelt_create(mctx, port, dscp, NULL, &delt);
7444 if (result != ISC_R_SUCCESS)
7445 return (result);
7446
7447 result = cfg_acl_fromconfig2(cfg_tuple_get(listener, "acl"),
7448 config, ns_g_lctx, actx, mctx, 0,
7449 family, &delt->acl);
7450 if (result != ISC_R_SUCCESS) {
7451 ns_listenelt_destroy(delt);
7452 return (result);
7453 }
7454 *target = delt;
7455 return (ISC_R_SUCCESS);
7456 }
7457
7458 isc_result_t
7459 ns_server_dumpstats(ns_server_t *server) {
7460 isc_result_t result;
7461 FILE *fp = NULL;
7462
7463 CHECKMF(isc_stdio_open(server->statsfile, "a", &fp),
7464 "could not open statistics dump file", server->statsfile);
7465
7466 result = ns_stats_dump(server, fp);
7467
7468 cleanup:
7469 if (fp != NULL)
7470 (void)isc_stdio_close(fp);
7471 if (result == ISC_R_SUCCESS)
7472 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7473 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7474 "dumpstats complete");
7475 else
7476 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7477 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
7478 "dumpstats failed: %s",
7479 dns_result_totext(result));
7480 return (result);
7481 }
7482
7483 static isc_result_t
7484 add_zone_tolist(dns_zone_t *zone, void *uap) {
7485 struct dumpcontext *dctx = uap;
7486 struct zonelistentry *zle;
7487
7488 zle = isc_mem_get(dctx->mctx, sizeof *zle);
7489 if (zle == NULL)
7490 return (ISC_R_NOMEMORY);
7491 zle->zone = NULL;
7492 dns_zone_attach(zone, &zle->zone);
7493 ISC_LINK_INIT(zle, link);
7494 ISC_LIST_APPEND(ISC_LIST_TAIL(dctx->viewlist)->zonelist, zle, link);
7495 return (ISC_R_SUCCESS);
7496 }
7497
7498 static isc_result_t
7499 add_view_tolist(struct dumpcontext *dctx, dns_view_t *view) {
7500 struct viewlistentry *vle;
7501 isc_result_t result = ISC_R_SUCCESS;
7502
7503 /*
7504 * Prevent duplicate views.
7505 */
7506 for (vle = ISC_LIST_HEAD(dctx->viewlist);
7507 vle != NULL;
7508 vle = ISC_LIST_NEXT(vle, link))
7509 if (vle->view == view)
7510 return (ISC_R_SUCCESS);
7511
7512 vle = isc_mem_get(dctx->mctx, sizeof *vle);
7513 if (vle == NULL)
7514 return (ISC_R_NOMEMORY);
7515 vle->view = NULL;
7516 dns_view_attach(view, &vle->view);
7517 ISC_LINK_INIT(vle, link);
7518 ISC_LIST_INIT(vle->zonelist);
7519 ISC_LIST_APPEND(dctx->viewlist, vle, link);
7520 if (dctx->dumpzones)
7521 result = dns_zt_apply(view->zonetable, ISC_TRUE,
7522 add_zone_tolist, dctx);
7523 return (result);
7524 }
7525
7526 static void
7527 dumpcontext_destroy(struct dumpcontext *dctx) {
7528 struct viewlistentry *vle;
7529 struct zonelistentry *zle;
7530
7531 vle = ISC_LIST_HEAD(dctx->viewlist);
7532 while (vle != NULL) {
7533 ISC_LIST_UNLINK(dctx->viewlist, vle, link);
7534 zle = ISC_LIST_HEAD(vle->zonelist);
7535 while (zle != NULL) {
7536 ISC_LIST_UNLINK(vle->zonelist, zle, link);
7537 dns_zone_detach(&zle->zone);
7538 isc_mem_put(dctx->mctx, zle, sizeof *zle);
7539 zle = ISC_LIST_HEAD(vle->zonelist);
7540 }
7541 dns_view_detach(&vle->view);
7542 isc_mem_put(dctx->mctx, vle, sizeof *vle);
7543 vle = ISC_LIST_HEAD(dctx->viewlist);
7544 }
7545 if (dctx->version != NULL)
7546 dns_db_closeversion(dctx->db, &dctx->version, ISC_FALSE);
7547 if (dctx->db != NULL)
7548 dns_db_detach(&dctx->db);
7549 if (dctx->cache != NULL)
7550 dns_db_detach(&dctx->cache);
7551 if (dctx->task != NULL)
7552 isc_task_detach(&dctx->task);
7553 if (dctx->fp != NULL)
7554 (void)isc_stdio_close(dctx->fp);
7555 if (dctx->mdctx != NULL)
7556 dns_dumpctx_detach(&dctx->mdctx);
7557 isc_mem_put(dctx->mctx, dctx, sizeof *dctx);
7558 }
7559
7560 static void
7561 dumpdone(void *arg, isc_result_t result) {
7562 struct dumpcontext *dctx = arg;
7563 char buf[1024+32];
7564 const dns_master_style_t *style;
7565
7566 if (result != ISC_R_SUCCESS)
7567 goto cleanup;
7568 if (dctx->mdctx != NULL)
7569 dns_dumpctx_detach(&dctx->mdctx);
7570 if (dctx->view == NULL) {
7571 dctx->view = ISC_LIST_HEAD(dctx->viewlist);
7572 if (dctx->view == NULL)
7573 goto done;
7574 INSIST(dctx->zone == NULL);
7575 } else
7576 goto resume;
7577 nextview:
7578 fprintf(dctx->fp, ";\n; Start view %s\n;\n", dctx->view->view->name);
7579 resume:
7580 if (dctx->dumpcache && dns_view_iscacheshared(dctx->view->view)) {
7581 fprintf(dctx->fp,
7582 ";\n; Cache of view '%s' is shared as '%s'\n",
7583 dctx->view->view->name,
7584 dns_cache_getname(dctx->view->view->cache));
7585 } else if (dctx->zone == NULL && dctx->cache == NULL &&
7586 dctx->dumpcache)
7587 {
7588 style = &dns_master_style_cache;
7589 /* start cache dump */
7590 if (dctx->view->view->cachedb != NULL)
7591 dns_db_attach(dctx->view->view->cachedb, &dctx->cache);
7592 if (dctx->cache != NULL) {
7593 fprintf(dctx->fp,
7594 ";\n; Cache dump of view '%s' (cache %s)\n;\n",
7595 dctx->view->view->name,
7596 dns_cache_getname(dctx->view->view->cache));
7597 result = dns_master_dumptostreaminc(dctx->mctx,
7598 dctx->cache, NULL,
7599 style, dctx->fp,
7600 dctx->task,
7601 dumpdone, dctx,
7602 &dctx->mdctx);
7603 if (result == DNS_R_CONTINUE)
7604 return;
7605 if (result == ISC_R_NOTIMPLEMENTED)
7606 fprintf(dctx->fp, "; %s\n",
7607 dns_result_totext(result));
7608 else if (result != ISC_R_SUCCESS)
7609 goto cleanup;
7610 }
7611 }
7612 if (dctx->cache != NULL) {
7613 dns_adb_dump(dctx->view->view->adb, dctx->fp);
7614 dns_resolver_printbadcache(dctx->view->view->resolver,
7615 dctx->fp);
7616 dns_db_detach(&dctx->cache);
7617 }
7618 if (dctx->dumpzones) {
7619 style = &dns_master_style_full;
7620 nextzone:
7621 if (dctx->version != NULL)
7622 dns_db_closeversion(dctx->db, &dctx->version,
7623 ISC_FALSE);
7624 if (dctx->db != NULL)
7625 dns_db_detach(&dctx->db);
7626 if (dctx->zone == NULL)
7627 dctx->zone = ISC_LIST_HEAD(dctx->view->zonelist);
7628 else
7629 dctx->zone = ISC_LIST_NEXT(dctx->zone, link);
7630 if (dctx->zone != NULL) {
7631 /* start zone dump */
7632 dns_zone_name(dctx->zone->zone, buf, sizeof(buf));
7633 fprintf(dctx->fp, ";\n; Zone dump of '%s'\n;\n", buf);
7634 result = dns_zone_getdb(dctx->zone->zone, &dctx->db);
7635 if (result != ISC_R_SUCCESS) {
7636 fprintf(dctx->fp, "; %s\n",
7637 dns_result_totext(result));
7638 goto nextzone;
7639 }
7640 dns_db_currentversion(dctx->db, &dctx->version);
7641 result = dns_master_dumptostreaminc(dctx->mctx,
7642 dctx->db,
7643 dctx->version,
7644 style, dctx->fp,
7645 dctx->task,
7646 dumpdone, dctx,
7647 &dctx->mdctx);
7648 if (result == DNS_R_CONTINUE)
7649 return;
7650 if (result == ISC_R_NOTIMPLEMENTED) {
7651 fprintf(dctx->fp, "; %s\n",
7652 dns_result_totext(result));
7653 result = ISC_R_SUCCESS;
7654 POST(result);
7655 goto nextzone;
7656 }
7657 if (result != ISC_R_SUCCESS)
7658 goto cleanup;
7659 }
7660 }
7661 if (dctx->view != NULL)
7662 dctx->view = ISC_LIST_NEXT(dctx->view, link);
7663 if (dctx->view != NULL)
7664 goto nextview;
7665 done:
7666 fprintf(dctx->fp, "; Dump complete\n");
7667 result = isc_stdio_flush(dctx->fp);
7668 if (result == ISC_R_SUCCESS)
7669 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7670 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7671 "dumpdb complete");
7672 cleanup:
7673 if (result != ISC_R_SUCCESS)
7674 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7675 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
7676 "dumpdb failed: %s", dns_result_totext(result));
7677 dumpcontext_destroy(dctx);
7678 }
7679
7680 isc_result_t
7681 ns_server_dumpdb(ns_server_t *server, char *args) {
7682 struct dumpcontext *dctx = NULL;
7683 dns_view_t *view;
7684 isc_result_t result;
7685 char *ptr;
7686 const char *sep;
7687
7688 /* Skip the command name. */
7689 ptr = next_token(&args, " \t");
7690 if (ptr == NULL)
7691 return (ISC_R_UNEXPECTEDEND);
7692
7693 dctx = isc_mem_get(server->mctx, sizeof(*dctx));
7694 if (dctx == NULL)
7695 return (ISC_R_NOMEMORY);
7696
7697 dctx->mctx = server->mctx;
7698 dctx->dumpcache = ISC_TRUE;
7699 dctx->dumpzones = ISC_FALSE;
7700 dctx->fp = NULL;
7701 ISC_LIST_INIT(dctx->viewlist);
7702 dctx->view = NULL;
7703 dctx->zone = NULL;
7704 dctx->cache = NULL;
7705 dctx->mdctx = NULL;
7706 dctx->db = NULL;
7707 dctx->cache = NULL;
7708 dctx->task = NULL;
7709 dctx->version = NULL;
7710 isc_task_attach(server->task, &dctx->task);
7711
7712 CHECKMF(isc_stdio_open(server->dumpfile, "w", &dctx->fp),
7713 "could not open dump file", server->dumpfile);
7714
7715 sep = (args == NULL) ? "" : ": ";
7716 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7717 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7718 "dumpdb started%s%s", sep, (args != NULL) ? args : "");
7719
7720 ptr = next_token(&args, " \t");
7721 if (ptr != NULL && strcmp(ptr, "-all") == 0) {
7722 dctx->dumpzones = ISC_TRUE;
7723 dctx->dumpcache = ISC_TRUE;
7724 ptr = next_token(&args, " \t");
7725 } else if (ptr != NULL && strcmp(ptr, "-cache") == 0) {
7726 dctx->dumpzones = ISC_FALSE;
7727 dctx->dumpcache = ISC_TRUE;
7728 ptr = next_token(&args, " \t");
7729 } else if (ptr != NULL && strcmp(ptr, "-zones") == 0) {
7730 dctx->dumpzones = ISC_TRUE;
7731 dctx->dumpcache = ISC_FALSE;
7732 ptr = next_token(&args, " \t");
7733 }
7734
7735 nextview:
7736 for (view = ISC_LIST_HEAD(server->viewlist);
7737 view != NULL;
7738 view = ISC_LIST_NEXT(view, link))
7739 {
7740 if (ptr != NULL && strcmp(view->name, ptr) != 0)
7741 continue;
7742 CHECK(add_view_tolist(dctx, view));
7743 }
7744 if (ptr != NULL) {
7745 ptr = next_token(&args, " \t");
7746 if (ptr != NULL)
7747 goto nextview;
7748 }
7749 dumpdone(dctx, ISC_R_SUCCESS);
7750 return (ISC_R_SUCCESS);
7751
7752 cleanup:
7753 if (dctx != NULL)
7754 dumpcontext_destroy(dctx);
7755 return (result);
7756 }
7757
7758 isc_result_t
7759 ns_server_dumpsecroots(ns_server_t *server, char *args) {
7760 dns_view_t *view;
7761 dns_keytable_t *secroots = NULL;
7762 isc_result_t result;
7763 char *ptr;
7764 FILE *fp = NULL;
7765 isc_time_t now;
7766 char tbuf[64];
7767
7768 /* Skip the command name. */
7769 ptr = next_token(&args, " \t");
7770 if (ptr == NULL)
7771 return (ISC_R_UNEXPECTEDEND);
7772
7773 ptr = next_token(&args, " \t");
7774
7775 CHECKMF(isc_stdio_open(server->secrootsfile, "w", &fp),
7776 "could not open secroots dump file", server->secrootsfile);
7777 TIME_NOW(&now);
7778 isc_time_formattimestamp(&now, tbuf, sizeof(tbuf));
7779 fprintf(fp, "%s\n", tbuf);
7780
7781 do {
7782 for (view = ISC_LIST_HEAD(server->viewlist);
7783 view != NULL;
7784 view = ISC_LIST_NEXT(view, link))
7785 {
7786 if (ptr != NULL && strcmp(view->name, ptr) != 0)
7787 continue;
7788 if (secroots != NULL)
7789 dns_keytable_detach(&secroots);
7790 result = dns_view_getsecroots(view, &secroots);
7791 if (result == ISC_R_NOTFOUND) {
7792 result = ISC_R_SUCCESS;
7793 continue;
7794 }
7795 fprintf(fp, "\n Start view %s\n\n", view->name);
7796 result = dns_keytable_dump(secroots, fp);
7797 if (result != ISC_R_SUCCESS)
7798 fprintf(fp, " dumpsecroots failed: %s\n",
7799 isc_result_totext(result));
7800 }
7801 if (ptr != NULL)
7802 ptr = next_token(&args, " \t");
7803 } while (ptr != NULL);
7804
7805 cleanup:
7806 if (secroots != NULL)
7807 dns_keytable_detach(&secroots);
7808 if (fp != NULL)
7809 (void)isc_stdio_close(fp);
7810 if (result == ISC_R_SUCCESS)
7811 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7812 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7813 "dumpsecroots complete");
7814 else
7815 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7816 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
7817 "dumpsecroots failed: %s",
7818 dns_result_totext(result));
7819 return (result);
7820 }
7821
7822 isc_result_t
7823 ns_server_dumprecursing(ns_server_t *server) {
7824 FILE *fp = NULL;
7825 isc_result_t result;
7826
7827 CHECKMF(isc_stdio_open(server->recfile, "w", &fp),
7828 "could not open dump file", server->recfile);
7829 fprintf(fp,";\n; Recursing Queries\n;\n");
7830 ns_interfacemgr_dumprecursing(fp, server->interfacemgr);
7831 fprintf(fp, "; Dump complete\n");
7832
7833 cleanup:
7834 if (fp != NULL)
7835 result = isc_stdio_close(fp);
7836 if (result == ISC_R_SUCCESS)
7837 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7838 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7839 "dumprecursing complete");
7840 else
7841 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7842 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
7843 "dumprecursing failed: %s",
7844 dns_result_totext(result));
7845 return (result);
7846 }
7847
7848 isc_result_t
7849 ns_server_setdebuglevel(ns_server_t *server, char *args) {
7850 char *ptr;
7851 char *levelstr;
7852 char *endp;
7853 long newlevel;
7854
7855 UNUSED(server);
7856
7857 /* Skip the command name. */
7858 ptr = next_token(&args, " \t");
7859 if (ptr == NULL)
7860 return (ISC_R_UNEXPECTEDEND);
7861
7862 /* Look for the new level name. */
7863 levelstr = next_token(&args, " \t");
7864 if (levelstr == NULL) {
7865 if (ns_g_debuglevel < 99)
7866 ns_g_debuglevel++;
7867 } else {
7868 newlevel = strtol(levelstr, &endp, 10);
7869 if (*endp != '\0' || newlevel < 0 || newlevel > 99)
7870 return (ISC_R_RANGE);
7871 ns_g_debuglevel = (unsigned int)newlevel;
7872 }
7873 isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
7874 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
7875 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
7876 "debug level is now %d", ns_g_debuglevel);
7877 return (ISC_R_SUCCESS);
7878 }
7879
7880 isc_result_t
7881 ns_server_validation(ns_server_t *server, char *args, isc_buffer_t *text) {
7882 char *ptr, *viewname;
7883 dns_view_t *view;
7884 isc_boolean_t changed = ISC_FALSE;
7885 isc_result_t result;
7886 isc_boolean_t enable = ISC_TRUE, set = ISC_TRUE, first = ISC_TRUE;
7887
7888 /* Skip the command name. */
7889 ptr = next_token(&args, " \t");
7890 if (ptr == NULL)
7891 return (ISC_R_UNEXPECTEDEND);
7892
7893 /* Find out what we are to do. */
7894 ptr = next_token(&args, " \t");
7895 if (ptr == NULL)
7896 return (ISC_R_UNEXPECTEDEND);
7897
7898 if (!strcasecmp(ptr, "on") || !strcasecmp(ptr, "yes") ||
7899 !strcasecmp(ptr, "enable") || !strcasecmp(ptr, "true"))
7900 enable = ISC_TRUE;
7901 else if (!strcasecmp(ptr, "off") || !strcasecmp(ptr, "no") ||
7902 !strcasecmp(ptr, "disable") || !strcasecmp(ptr, "false"))
7903 enable = ISC_FALSE;
7904 else if (!strcasecmp(ptr, "check"))
7905 set = ISC_FALSE;
7906 else
7907 return (DNS_R_SYNTAX);
7908
7909 /* Look for the view name. */
7910 viewname = next_token(&args, " \t");
7911
7912 result = isc_task_beginexclusive(server->task);
7913 RUNTIME_CHECK(result == ISC_R_SUCCESS);
7914 for (view = ISC_LIST_HEAD(server->viewlist);
7915 view != NULL;
7916 view = ISC_LIST_NEXT(view, link))
7917 {
7918 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
7919 continue;
7920 result = dns_view_flushcache(view);
7921 if (result != ISC_R_SUCCESS)
7922 goto cleanup;
7923
7924 if (set) {
7925 view->enablevalidation = enable;
7926 changed = ISC_TRUE;
7927 } else {
7928 if (!first)
7929 CHECK(putstr(text, "\n"));
7930 CHECK(putstr(text, "DNSSEC validation is "));
7931 CHECK(putstr(text, view->enablevalidation
7932 ? "enabled" : "disabled"));
7933 CHECK(putstr(text, " (view "));
7934 CHECK(putstr(text, view->name));
7935 CHECK(putstr(text, ")"));
7936 CHECK(putnull(text));
7937 first = ISC_FALSE;
7938 }
7939 }
7940
7941 if (!set)
7942 result = ISC_R_SUCCESS;
7943 else if (changed)
7944 result = ISC_R_SUCCESS;
7945 else
7946 result = ISC_R_FAILURE;
7947 cleanup:
7948 isc_task_endexclusive(server->task);
7949 return (result);
7950 }
7951
7952 isc_result_t
7953 ns_server_flushcache(ns_server_t *server, char *args) {
7954 char *ptr, *viewname;
7955 dns_view_t *view;
7956 isc_boolean_t flushed;
7957 isc_boolean_t found;
7958 isc_result_t result;
7959 ns_cache_t *nsc;
7960
7961 /* Skip the command name. */
7962 ptr = next_token(&args, " \t");
7963 if (ptr == NULL)
7964 return (ISC_R_UNEXPECTEDEND);
7965
7966 /* Look for the view name. */
7967 viewname = next_token(&args, " \t");
7968
7969 result = isc_task_beginexclusive(server->task);
7970 RUNTIME_CHECK(result == ISC_R_SUCCESS);
7971 flushed = ISC_TRUE;
7972 found = ISC_FALSE;
7973
7974 /*
7975 * Flushing a cache is tricky when caches are shared by multiple views.
7976 * We first identify which caches should be flushed in the local cache
7977 * list, flush these caches, and then update other views that refer to
7978 * the flushed cache DB.
7979 */
7980 if (viewname != NULL) {
7981 /*
7982 * Mark caches that need to be flushed. This is an O(#view^2)
7983 * operation in the very worst case, but should be normally
7984 * much more lightweight because only a few (most typically just
7985 * one) views will match.
7986 */
7987 for (view = ISC_LIST_HEAD(server->viewlist);
7988 view != NULL;
7989 view = ISC_LIST_NEXT(view, link))
7990 {
7991 if (strcasecmp(viewname, view->name) != 0)
7992 continue;
7993 found = ISC_TRUE;
7994 for (nsc = ISC_LIST_HEAD(server->cachelist);
7995 nsc != NULL;
7996 nsc = ISC_LIST_NEXT(nsc, link)) {
7997 if (nsc->cache == view->cache)
7998 break;
7999 }
8000 INSIST(nsc != NULL);
8001 nsc->needflush = ISC_TRUE;
8002 }
8003 } else
8004 found = ISC_TRUE;
8005
8006 /* Perform flush */
8007 for (nsc = ISC_LIST_HEAD(server->cachelist);
8008 nsc != NULL;
8009 nsc = ISC_LIST_NEXT(nsc, link)) {
8010 if (viewname != NULL && !nsc->needflush)
8011 continue;
8012 nsc->needflush = ISC_TRUE;
8013 result = dns_view_flushcache2(nsc->primaryview, ISC_FALSE);
8014 if (result != ISC_R_SUCCESS) {
8015 flushed = ISC_FALSE;
8016 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8017 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
8018 "flushing cache in view '%s' failed: %s",
8019 nsc->primaryview->name,
8020 isc_result_totext(result));
8021 }
8022 }
8023
8024 /*
8025 * Fix up views that share a flushed cache: let the views update the
8026 * cache DB they're referring to. This could also be an expensive
8027 * operation, but should typically be marginal: the inner loop is only
8028 * necessary for views that share a cache, and if there are many such
8029 * views the number of shared cache should normally be small.
8030 * A worst case is that we have n views and n/2 caches, each shared by
8031 * two views. Then this will be a O(n^2/4) operation.
8032 */
8033 for (view = ISC_LIST_HEAD(server->viewlist);
8034 view != NULL;
8035 view = ISC_LIST_NEXT(view, link))
8036 {
8037 if (!dns_view_iscacheshared(view))
8038 continue;
8039 for (nsc = ISC_LIST_HEAD(server->cachelist);
8040 nsc != NULL;
8041 nsc = ISC_LIST_NEXT(nsc, link)) {
8042 if (!nsc->needflush || nsc->cache != view->cache)
8043 continue;
8044 result = dns_view_flushcache2(view, ISC_TRUE);
8045 if (result != ISC_R_SUCCESS) {
8046 flushed = ISC_FALSE;
8047 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8048 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
8049 "fixing cache in view '%s' "
8050 "failed: %s", view->name,
8051 isc_result_totext(result));
8052 }
8053 }
8054 }
8055
8056 /* Cleanup the cache list. */
8057 for (nsc = ISC_LIST_HEAD(server->cachelist);
8058 nsc != NULL;
8059 nsc = ISC_LIST_NEXT(nsc, link)) {
8060 nsc->needflush = ISC_FALSE;
8061 }
8062
8063 if (flushed && found) {
8064 if (viewname != NULL)
8065 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8066 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8067 "flushing cache in view '%s' succeeded",
8068 viewname);
8069 else
8070 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8071 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8072 "flushing caches in all views succeeded");
8073 result = ISC_R_SUCCESS;
8074 } else {
8075 if (!found) {
8076 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8077 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
8078 "flushing cache in view '%s' failed: "
8079 "view not found", viewname);
8080 result = ISC_R_NOTFOUND;
8081 } else
8082 result = ISC_R_FAILURE;
8083 }
8084 isc_task_endexclusive(server->task);
8085 return (result);
8086 }
8087
8088 isc_result_t
8089 ns_server_flushnode(ns_server_t *server, char *args, isc_boolean_t tree) {
8090 char *target, *viewname;
8091 dns_view_t *view;
8092 isc_boolean_t flushed;
8093 isc_boolean_t found;
8094 isc_result_t result;
8095 isc_buffer_t b;
8096 dns_fixedname_t fixed;
8097 dns_name_t *name;
8098
8099 /* Skip the command name. */
8100 target = next_token(&args, " \t");
8101 if (target == NULL)
8102 return (ISC_R_UNEXPECTEDEND);
8103
8104 /* Find the domain name to flush. */
8105 target = next_token(&args, " \t");
8106 if (target == NULL)
8107 return (ISC_R_UNEXPECTEDEND);
8108
8109 isc_buffer_constinit(&b, target, strlen(target));
8110 isc_buffer_add(&b, strlen(target));
8111 dns_fixedname_init(&fixed);
8112 name = dns_fixedname_name(&fixed);
8113 result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL);
8114 if (result != ISC_R_SUCCESS)
8115 return (result);
8116
8117 /* Look for the view name. */
8118 viewname = next_token(&args, " \t");
8119
8120 result = isc_task_beginexclusive(server->task);
8121 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8122 flushed = ISC_TRUE;
8123 found = ISC_FALSE;
8124 for (view = ISC_LIST_HEAD(server->viewlist);
8125 view != NULL;
8126 view = ISC_LIST_NEXT(view, link))
8127 {
8128 if (viewname != NULL && strcasecmp(viewname, view->name) != 0)
8129 continue;
8130 found = ISC_TRUE;
8131 /*
8132 * It's a little inefficient to try flushing name for all views
8133 * if some of the views share a single cache. But since the
8134 * operation is lightweight we prefer simplicity here.
8135 */
8136 result = dns_view_flushnode(view, name, tree);
8137 if (result != ISC_R_SUCCESS) {
8138 flushed = ISC_FALSE;
8139 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8140 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
8141 "flushing %s '%s' in cache view '%s' "
8142 "failed: %s",
8143 tree ? "tree" : "name",
8144 target, view->name,
8145 isc_result_totext(result));
8146 }
8147 }
8148 if (flushed && found) {
8149 if (viewname != NULL)
8150 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8151 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8152 "flushing %s '%s' in cache view '%s' "
8153 "succeeded",
8154 tree ? "tree" : "name",
8155 target, viewname);
8156 else
8157 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8158 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8159 "flushing %s '%s' in all cache views "
8160 "succeeded",
8161 tree ? "tree" : "name",
8162 target);
8163 result = ISC_R_SUCCESS;
8164 } else {
8165 if (!found)
8166 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8167 NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
8168 "flushing %s '%s' in cache view '%s' "
8169 "failed: view not found",
8170 tree ? "tree" : "name",
8171 target, viewname);
8172 result = ISC_R_FAILURE;
8173 }
8174 isc_task_endexclusive(server->task);
8175 return (result);
8176 }
8177
8178 isc_result_t
8179 ns_server_status(ns_server_t *server, isc_buffer_t *text) {
8180 int zonecount, xferrunning, xferdeferred, soaqueries;
8181 unsigned int n;
8182 const char *ob = "", *cb = "", *alt = "";
8183 char boottime[80], configtime[80];
8184
8185 if (ns_g_server->version_set) {
8186 ob = " (";
8187 cb = ")";
8188 if (ns_g_server->version == NULL)
8189 alt = "version.bind/txt/ch disabled";
8190 else
8191 alt = ns_g_server->version;
8192 }
8193 zonecount = dns_zonemgr_getcount(server->zonemgr, DNS_ZONESTATE_ANY);
8194 xferrunning = dns_zonemgr_getcount(server->zonemgr,
8195 DNS_ZONESTATE_XFERRUNNING);
8196 xferdeferred = dns_zonemgr_getcount(server->zonemgr,
8197 DNS_ZONESTATE_XFERDEFERRED);
8198 soaqueries = dns_zonemgr_getcount(server->zonemgr,
8199 DNS_ZONESTATE_SOAQUERY);
8200
8201 isc_time_formathttptimestamp(&ns_g_boottime, boottime,
8202 sizeof(boottime));
8203 isc_time_formathttptimestamp(&ns_g_configtime, configtime,
8204 sizeof(configtime));
8205
8206 n = snprintf((char *)isc_buffer_used(text),
8207 isc_buffer_availablelength(text),
8208 "version: %s%s%s%s <id:%s>\n"
8209 "boot time: %s\n"
8210 "last configured: %s\n"
8211 #ifdef ISC_PLATFORM_USETHREADS
8212 "CPUs found: %u\n"
8213 "worker threads: %u\n"
8214 "UDP listeners per interface: %u\n"
8215 #endif
8216 "number of zones: %u\n"
8217 "debug level: %d\n"
8218 "xfers running: %u\n"
8219 "xfers deferred: %u\n"
8220 "soa queries in progress: %u\n"
8221 "query logging is %s\n"
8222 "recursive clients: %d/%d/%d\n"
8223 "tcp clients: %d/%d\n"
8224 "server is up and running",
8225 ns_g_version, ob, alt, cb, ns_g_srcid,
8226 boottime, configtime,
8227 #ifdef ISC_PLATFORM_USETHREADS
8228 ns_g_cpus_detected, ns_g_cpus, ns_g_udpdisp,
8229 #endif
8230 zonecount, ns_g_debuglevel, xferrunning, xferdeferred,
8231 soaqueries, server->log_queries ? "ON" : "OFF",
8232 server->recursionquota.used, server->recursionquota.soft,
8233 server->recursionquota.max,
8234 server->tcpquota.used, server->tcpquota.max);
8235 if (n >= isc_buffer_availablelength(text))
8236 return (ISC_R_NOSPACE);
8237 isc_buffer_add(text, n);
8238 return (ISC_R_SUCCESS);
8239 }
8240
8241 static isc_result_t
8242 delete_keynames(dns_tsig_keyring_t *ring, char *target,
8243 unsigned int *foundkeys)
8244 {
8245 char namestr[DNS_NAME_FORMATSIZE];
8246 isc_result_t result;
8247 dns_rbtnodechain_t chain;
8248 dns_name_t foundname;
8249 dns_fixedname_t fixedorigin;
8250 dns_name_t *origin;
8251 dns_rbtnode_t *node;
8252 dns_tsigkey_t *tkey;
8253
8254 dns_name_init(&foundname, NULL);
8255 dns_fixedname_init(&fixedorigin);
8256 origin = dns_fixedname_name(&fixedorigin);
8257
8258 again:
8259 dns_rbtnodechain_init(&chain, ring->mctx);
8260 result = dns_rbtnodechain_first(&chain, ring->keys, &foundname,
8261 origin);
8262 if (result == ISC_R_NOTFOUND) {
8263 dns_rbtnodechain_invalidate(&chain);
8264 return (ISC_R_SUCCESS);
8265 }
8266 if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) {
8267 dns_rbtnodechain_invalidate(&chain);
8268 return (result);
8269 }
8270
8271 for (;;) {
8272 node = NULL;
8273 dns_rbtnodechain_current(&chain, &foundname, origin, &node);
8274 tkey = node->data;
8275
8276 if (tkey != NULL) {
8277 if (!tkey->generated)
8278 goto nextkey;
8279
8280 dns_name_format(&tkey->name, namestr, sizeof(namestr));
8281 if (strcmp(namestr, target) == 0) {
8282 (*foundkeys)++;
8283 dns_rbtnodechain_invalidate(&chain);
8284 (void)dns_rbt_deletename(ring->keys,
8285 &tkey->name,
8286 ISC_FALSE);
8287 goto again;
8288 }
8289 }
8290
8291 nextkey:
8292 result = dns_rbtnodechain_next(&chain, &foundname, origin);
8293 if (result == ISC_R_NOMORE)
8294 break;
8295 if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) {
8296 dns_rbtnodechain_invalidate(&chain);
8297 return (result);
8298 }
8299 }
8300
8301 return (ISC_R_SUCCESS);
8302 }
8303
8304 isc_result_t
8305 ns_server_tsigdelete(ns_server_t *server, char *command, isc_buffer_t *text) {
8306 isc_result_t result;
8307 unsigned int n;
8308 dns_view_t *view;
8309 unsigned int foundkeys = 0;
8310 char *target;
8311 char *viewname;
8312
8313 (void)next_token(&command, " \t"); /* skip command name */
8314 target = next_token(&command, " \t");
8315 if (target == NULL)
8316 return (ISC_R_UNEXPECTEDEND);
8317 viewname = next_token(&command, " \t");
8318
8319 result = isc_task_beginexclusive(server->task);
8320 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8321 for (view = ISC_LIST_HEAD(server->viewlist);
8322 view != NULL;
8323 view = ISC_LIST_NEXT(view, link)) {
8324 if (viewname == NULL || strcmp(view->name, viewname) == 0) {
8325 RWLOCK(&view->dynamickeys->lock, isc_rwlocktype_write);
8326 result = delete_keynames(view->dynamickeys, target,
8327 &foundkeys);
8328 RWUNLOCK(&view->dynamickeys->lock,
8329 isc_rwlocktype_write);
8330 if (result != ISC_R_SUCCESS) {
8331 isc_task_endexclusive(server->task);
8332 return (result);
8333 }
8334 }
8335 }
8336 isc_task_endexclusive(server->task);
8337
8338 n = snprintf((char *)isc_buffer_used(text),
8339 isc_buffer_availablelength(text),
8340 "%d tsig keys deleted.\n", foundkeys);
8341 if (n >= isc_buffer_availablelength(text))
8342 return (ISC_R_NOSPACE);
8343 isc_buffer_add(text, n);
8344
8345 return (ISC_R_SUCCESS);
8346 }
8347
8348 static isc_result_t
8349 list_keynames(dns_view_t *view, dns_tsig_keyring_t *ring, isc_buffer_t *text,
8350 unsigned int *foundkeys)
8351 {
8352 char namestr[DNS_NAME_FORMATSIZE];
8353 char creatorstr[DNS_NAME_FORMATSIZE];
8354 isc_result_t result;
8355 dns_rbtnodechain_t chain;
8356 dns_name_t foundname;
8357 dns_fixedname_t fixedorigin;
8358 dns_name_t *origin;
8359 dns_rbtnode_t *node;
8360 dns_tsigkey_t *tkey;
8361 const char *viewname;
8362
8363 if (view != NULL)
8364 viewname = view->name;
8365 else
8366 viewname = "(global)";
8367
8368 dns_name_init(&foundname, NULL);
8369 dns_fixedname_init(&fixedorigin);
8370 origin = dns_fixedname_name(&fixedorigin);
8371 dns_rbtnodechain_init(&chain, ring->mctx);
8372 result = dns_rbtnodechain_first(&chain, ring->keys, &foundname,
8373 origin);
8374 if (result == ISC_R_NOTFOUND) {
8375 dns_rbtnodechain_invalidate(&chain);
8376 return (ISC_R_SUCCESS);
8377 }
8378 if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) {
8379 dns_rbtnodechain_invalidate(&chain);
8380 return (result);
8381 }
8382
8383 for (;;) {
8384 node = NULL;
8385 dns_rbtnodechain_current(&chain, &foundname, origin, &node);
8386 tkey = node->data;
8387
8388 if (tkey != NULL) {
8389 (*foundkeys)++;
8390 dns_name_format(&tkey->name, namestr, sizeof(namestr));
8391 if (tkey->generated) {
8392 dns_name_format(tkey->creator, creatorstr,
8393 sizeof(creatorstr));
8394 if (*foundkeys != 0)
8395 CHECK(putstr(text, "\n"));
8396 CHECK(putstr(text, "view \""));
8397 CHECK(putstr(text, viewname));
8398 CHECK(putstr(text,
8399 "\"; type \"dynamic\"; key \""));
8400 CHECK(putstr(text, namestr));
8401 CHECK(putstr(text, "\"; creator \""));
8402 CHECK(putstr(text, creatorstr));
8403 CHECK(putstr(text, "\";"));
8404 } else {
8405 if (*foundkeys != 0)
8406 CHECK(putstr(text, "\n"));
8407 CHECK(putstr(text, "view \""));
8408 CHECK(putstr(text, viewname));
8409 CHECK(putstr(text,
8410 "\"; type \"static\"; key \""));
8411 CHECK(putstr(text, namestr));
8412 CHECK(putstr(text, "\";"));
8413 }
8414 }
8415 result = dns_rbtnodechain_next(&chain, &foundname, origin);
8416 if (result == ISC_R_NOMORE)
8417 break;
8418 if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) {
8419 dns_rbtnodechain_invalidate(&chain);
8420 return (result);
8421 }
8422 }
8423
8424 return (ISC_R_SUCCESS);
8425
8426 cleanup:
8427 return (result);
8428 }
8429
8430 isc_result_t
8431 ns_server_tsiglist(ns_server_t *server, isc_buffer_t *text) {
8432 isc_result_t result;
8433 dns_view_t *view;
8434 unsigned int foundkeys = 0;
8435
8436 result = isc_task_beginexclusive(server->task);
8437 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8438 for (view = ISC_LIST_HEAD(server->viewlist);
8439 view != NULL;
8440 view = ISC_LIST_NEXT(view, link)) {
8441 RWLOCK(&view->statickeys->lock, isc_rwlocktype_read);
8442 result = list_keynames(view, view->statickeys, text,
8443 &foundkeys);
8444 RWUNLOCK(&view->statickeys->lock, isc_rwlocktype_read);
8445 if (result != ISC_R_SUCCESS) {
8446 isc_task_endexclusive(server->task);
8447 return (result);
8448 }
8449 RWLOCK(&view->dynamickeys->lock, isc_rwlocktype_read);
8450 result = list_keynames(view, view->dynamickeys, text,
8451 &foundkeys);
8452 RWUNLOCK(&view->dynamickeys->lock, isc_rwlocktype_read);
8453 if (result != ISC_R_SUCCESS) {
8454 isc_task_endexclusive(server->task);
8455 return (result);
8456 }
8457 }
8458 isc_task_endexclusive(server->task);
8459
8460 if (foundkeys == 0)
8461 CHECK(putstr(text, "no tsig keys found."));
8462
8463 if (isc_buffer_usedlength(text) > 0)
8464 CHECK(putnull(text));
8465
8466 return (ISC_R_SUCCESS);
8467
8468 cleanup:
8469 return (result);
8470 }
8471
8472 /*
8473 * Act on a "sign" or "loadkeys" command from the command channel.
8474 */
8475 isc_result_t
8476 ns_server_rekey(ns_server_t *server, char *args, isc_buffer_t *text) {
8477 isc_result_t result;
8478 dns_zone_t *zone = NULL;
8479 dns_zonetype_t type;
8480 isc_uint16_t keyopts;
8481 isc_boolean_t fullsign = ISC_FALSE;
8482
8483 if (strncasecmp(args, NS_COMMAND_SIGN, strlen(NS_COMMAND_SIGN)) == 0)
8484 fullsign = ISC_TRUE;
8485
8486 result = zone_from_args(server, args, NULL, &zone, NULL,
8487 text, ISC_TRUE);
8488 if (result != ISC_R_SUCCESS)
8489 return (result);
8490 if (zone == NULL)
8491 return (ISC_R_UNEXPECTEDEND); /* XXX: or do all zones? */
8492
8493 type = dns_zone_gettype(zone);
8494 if (type != dns_zone_master) {
8495 dns_zone_detach(&zone);
8496 return (DNS_R_NOTMASTER);
8497 }
8498
8499 keyopts = dns_zone_getkeyopts(zone);
8500
8501 /* "rndc loadkeys" requires "auto-dnssec maintain". */
8502 if ((keyopts & DNS_ZONEKEY_ALLOW) == 0)
8503 result = ISC_R_NOPERM;
8504 else if ((keyopts & DNS_ZONEKEY_MAINTAIN) == 0 && !fullsign)
8505 result = ISC_R_NOPERM;
8506 else
8507 dns_zone_rekey(zone, fullsign);
8508
8509 dns_zone_detach(&zone);
8510 return (result);
8511 }
8512
8513 /*
8514 * Act on a "sync" command from the command channel.
8515 */
8516 static isc_result_t
8517 synczone(dns_zone_t *zone, void *uap) {
8518 isc_boolean_t cleanup = *(isc_boolean_t *)uap;
8519 isc_result_t result;
8520 dns_zone_t *raw = NULL;
8521 char *journal;
8522
8523 dns_zone_getraw(zone, &raw);
8524 if (raw != NULL) {
8525 synczone(raw, uap);
8526 dns_zone_detach(&raw);
8527 }
8528
8529 result = dns_zone_flush(zone);
8530 if (result != ISC_R_SUCCESS)
8531 cleanup = ISC_FALSE;
8532 if (cleanup) {
8533 journal = dns_zone_getjournal(zone);
8534 if (journal != NULL)
8535 (void)isc_file_remove(journal);
8536 }
8537
8538 return (result);
8539 }
8540
8541 isc_result_t
8542 ns_server_sync(ns_server_t *server, char *args, isc_buffer_t *text) {
8543 isc_result_t result, tresult;
8544 dns_view_t *view;
8545 dns_zone_t *zone = NULL;
8546 char classstr[DNS_RDATACLASS_FORMATSIZE];
8547 char zonename[DNS_NAME_FORMATSIZE];
8548 const char *vname, *sep, *msg = NULL, *arg;
8549 isc_boolean_t cleanup = ISC_FALSE;
8550
8551 (void) next_token(&args, " \t");
8552
8553 arg = next_token(&args, " \t");
8554 if (arg != NULL &&
8555 (strcmp(arg, "-clean") == 0 || strcmp(arg, "-clear") == 0)) {
8556 cleanup = ISC_TRUE;
8557 arg = next_token(&args, " \t");
8558 }
8559
8560 result = zone_from_args(server, args, arg, &zone, NULL,
8561 text, ISC_FALSE);
8562 if (result != ISC_R_SUCCESS)
8563 return (result);
8564
8565 if (zone == NULL) {
8566 result = isc_task_beginexclusive(server->task);
8567 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8568 tresult = ISC_R_SUCCESS;
8569 for (view = ISC_LIST_HEAD(server->viewlist);
8570 view != NULL;
8571 view = ISC_LIST_NEXT(view, link)) {
8572 result = dns_zt_apply(view->zonetable, ISC_FALSE,
8573 synczone, &cleanup);
8574 if (result != ISC_R_SUCCESS &&
8575 tresult == ISC_R_SUCCESS)
8576 tresult = result;
8577 }
8578 isc_task_endexclusive(server->task);
8579 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8580 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8581 "dumping all zones%s: %s",
8582 cleanup ? ", removing journal files" : "",
8583 isc_result_totext(result));
8584 return (tresult);
8585 }
8586
8587 result = isc_task_beginexclusive(server->task);
8588 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8589 result = synczone(zone, &cleanup);
8590 isc_task_endexclusive(server->task);
8591
8592 if (msg != NULL && strlen(msg) < isc_buffer_availablelength(text))
8593 isc_buffer_putmem(text, (const unsigned char *)msg,
8594 strlen(msg) + 1);
8595
8596 view = dns_zone_getview(zone);
8597 if (strcmp(view->name, "_default") == 0 ||
8598 strcmp(view->name, "_bind") == 0)
8599 {
8600 vname = "";
8601 sep = "";
8602 } else {
8603 vname = view->name;
8604 sep = " ";
8605 }
8606 dns_rdataclass_format(dns_zone_getclass(zone), classstr,
8607 sizeof(classstr));
8608 dns_name_format(dns_zone_getorigin(zone),
8609 zonename, sizeof(zonename));
8610 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8611 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8612 "sync: dumping zone '%s/%s'%s%s%s: %s",
8613 zonename, classstr, sep, vname,
8614 cleanup ? ", removing journal file" : "",
8615 isc_result_totext(result));
8616 dns_zone_detach(&zone);
8617 return (result);
8618 }
8619
8620 /*
8621 * Act on a "freeze" or "thaw" command from the command channel.
8622 */
8623 isc_result_t
8624 ns_server_freeze(ns_server_t *server, isc_boolean_t freeze, char *args,
8625 isc_buffer_t *text)
8626 {
8627 isc_result_t result, tresult;
8628 dns_zone_t *zone = NULL, *raw = NULL;
8629 dns_zonetype_t type;
8630 char classstr[DNS_RDATACLASS_FORMATSIZE];
8631 char zonename[DNS_NAME_FORMATSIZE];
8632 dns_view_t *view;
8633 const char *vname, *sep;
8634 isc_boolean_t frozen;
8635 const char *msg = NULL;
8636
8637 result = zone_from_args(server, args, NULL, &zone, NULL,
8638 text, ISC_TRUE);
8639 if (result != ISC_R_SUCCESS)
8640 return (result);
8641 if (zone == NULL) {
8642 result = isc_task_beginexclusive(server->task);
8643 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8644 tresult = ISC_R_SUCCESS;
8645 for (view = ISC_LIST_HEAD(server->viewlist);
8646 view != NULL;
8647 view = ISC_LIST_NEXT(view, link)) {
8648 result = dns_view_freezezones(view, freeze);
8649 if (result != ISC_R_SUCCESS &&
8650 tresult == ISC_R_SUCCESS)
8651 tresult = result;
8652 }
8653 isc_task_endexclusive(server->task);
8654 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8655 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8656 "%s all zones: %s",
8657 freeze ? "freezing" : "thawing",
8658 isc_result_totext(tresult));
8659 return (tresult);
8660 }
8661 dns_zone_getraw(zone, &raw);
8662 if (raw != NULL) {
8663 dns_zone_detach(&zone);
8664 dns_zone_attach(raw, &zone);
8665 dns_zone_detach(&raw);
8666 }
8667 type = dns_zone_gettype(zone);
8668 if (type != dns_zone_master) {
8669 dns_zone_detach(&zone);
8670 return (DNS_R_NOTMASTER);
8671 }
8672
8673 if (freeze && !dns_zone_isdynamic(zone, ISC_TRUE)) {
8674 dns_zone_detach(&zone);
8675 return (DNS_R_NOTDYNAMIC);
8676 }
8677
8678 result = isc_task_beginexclusive(server->task);
8679 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8680 frozen = dns_zone_getupdatedisabled(zone);
8681 if (freeze) {
8682 if (frozen) {
8683 msg = "WARNING: The zone was already frozen.\n"
8684 "Someone else may be editing it or "
8685 "it may still be re-loading.";
8686 result = DNS_R_FROZEN;
8687 }
8688 if (result == ISC_R_SUCCESS) {
8689 result = dns_zone_flush(zone);
8690 if (result != ISC_R_SUCCESS)
8691 msg = "Flushing the zone updates to "
8692 "disk failed.";
8693 }
8694 if (result == ISC_R_SUCCESS)
8695 dns_zone_setupdatedisabled(zone, freeze);
8696 } else {
8697 if (frozen) {
8698 result = dns_zone_loadandthaw(zone);
8699 switch (result) {
8700 case ISC_R_SUCCESS:
8701 case DNS_R_UPTODATE:
8702 msg = "The zone reload and thaw was "
8703 "successful.";
8704 result = ISC_R_SUCCESS;
8705 break;
8706 case DNS_R_CONTINUE:
8707 msg = "A zone reload and thaw was started.\n"
8708 "Check the logs to see the result.";
8709 result = ISC_R_SUCCESS;
8710 break;
8711 }
8712 }
8713 }
8714 isc_task_endexclusive(server->task);
8715
8716 if (msg != NULL && strlen(msg) < isc_buffer_availablelength(text))
8717 isc_buffer_putmem(text, (const unsigned char *)msg,
8718 strlen(msg) + 1);
8719
8720 view = dns_zone_getview(zone);
8721 if (strcmp(view->name, "_default") == 0 ||
8722 strcmp(view->name, "_bind") == 0)
8723 {
8724 vname = "";
8725 sep = "";
8726 } else {
8727 vname = view->name;
8728 sep = " ";
8729 }
8730 dns_rdataclass_format(dns_zone_getclass(zone), classstr,
8731 sizeof(classstr));
8732 dns_name_format(dns_zone_getorigin(zone),
8733 zonename, sizeof(zonename));
8734 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8735 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8736 "%s zone '%s/%s'%s%s: %s",
8737 freeze ? "freezing" : "thawing",
8738 zonename, classstr, sep, vname,
8739 isc_result_totext(result));
8740 dns_zone_detach(&zone);
8741 return (result);
8742 }
8743
8744 #ifdef HAVE_LIBSCF
8745 /*
8746 * This function adds a message for rndc to echo if named
8747 * is managed by smf and is also running chroot.
8748 */
8749 isc_result_t
8750 ns_smf_add_message(isc_buffer_t *text) {
8751 unsigned int n;
8752
8753 n = snprintf((char *)isc_buffer_used(text),
8754 isc_buffer_availablelength(text),
8755 "use svcadm(1M) to manage named");
8756 if (n >= isc_buffer_availablelength(text))
8757 return (ISC_R_NOSPACE);
8758 isc_buffer_add(text, n);
8759 return (ISC_R_SUCCESS);
8760 }
8761 #endif /* HAVE_LIBSCF */
8762
8763 /*
8764 * Emit a comment at the top of the nzf file containing the viewname
8765 * Expects the fp to already be open for writing
8766 */
8767 #define HEADER1 "# New zone file for view: "
8768 #define HEADER2 "\n# This file contains configuration for zones added by\n" \
8769 "# the 'rndc addzone' command. DO NOT EDIT BY HAND.\n"
8770 isc_result_t
8771 add_comment(FILE *fp, const char *viewname) {
8772 isc_result_t result;
8773 CHECK(isc_stdio_write(HEADER1, sizeof(HEADER1) - 1, 1, fp, NULL));
8774 CHECK(isc_stdio_write(viewname, strlen(viewname), 1, fp, NULL));
8775 CHECK(isc_stdio_write(HEADER2, sizeof(HEADER2) - 1, 1, fp, NULL));
8776 cleanup:
8777 return (result);
8778 }
8779
8780 /*
8781 * Act on an "addzone" command from the command channel.
8782 */
8783 isc_result_t
8784 ns_server_add_zone(ns_server_t *server, char *args, isc_buffer_t *text) {
8785 isc_result_t result, tresult;
8786 isc_buffer_t argbuf;
8787 size_t arglen;
8788 cfg_parser_t *parser = NULL;
8789 cfg_obj_t *config = NULL;
8790 const cfg_obj_t *vconfig = NULL;
8791 const cfg_obj_t *views = NULL;
8792 const cfg_obj_t *parms = NULL;
8793 const cfg_obj_t *obj = NULL;
8794 const cfg_listelt_t *element;
8795 const char *zonename;
8796 const char *classname = NULL;
8797 const char *argp;
8798 const char *viewname = NULL;
8799 dns_rdataclass_t rdclass;
8800 dns_view_t *view = NULL;
8801 isc_buffer_t buf;
8802 dns_fixedname_t fname;
8803 dns_name_t *dnsname;
8804 dns_zone_t *zone = NULL;
8805 FILE *fp = NULL;
8806 struct cfg_context *cfg = NULL;
8807 char namebuf[DNS_NAME_FORMATSIZE];
8808 off_t offset;
8809
8810 /* Try to parse the argument string */
8811 arglen = strlen(args);
8812 isc_buffer_init(&argbuf, args, (unsigned int)arglen);
8813 isc_buffer_add(&argbuf, strlen(args));
8814 CHECK(cfg_parser_create(server->mctx, ns_g_lctx, &parser));
8815 CHECK(cfg_parse_buffer(parser, &argbuf, &cfg_type_addzoneconf,
8816 &config));
8817 CHECK(cfg_map_get(config, "addzone", &parms));
8818
8819 zonename = cfg_obj_asstring(cfg_tuple_get(parms, "name"));
8820 isc_buffer_constinit(&buf, zonename, strlen(zonename));
8821 isc_buffer_add(&buf, strlen(zonename));
8822
8823 dns_fixedname_init(&fname);
8824 dnsname = dns_fixedname_name(&fname);
8825 CHECK(dns_name_fromtext(dnsname, &buf, dns_rootname, ISC_FALSE, NULL));
8826
8827 /* Make sense of optional class argument */
8828 obj = cfg_tuple_get(parms, "class");
8829 CHECK(ns_config_getclass(obj, dns_rdataclass_in, &rdclass));
8830 if (rdclass != dns_rdataclass_in && obj)
8831 classname = cfg_obj_asstring(obj);
8832
8833 /* Make sense of optional view argument */
8834 obj = cfg_tuple_get(parms, "view");
8835 if (obj && cfg_obj_isstring(obj))
8836 viewname = cfg_obj_asstring(obj);
8837 if (viewname == NULL || *viewname == '\0')
8838 viewname = "_default";
8839 CHECK(dns_viewlist_find(&server->viewlist, viewname, rdclass, &view));
8840
8841 /* Are we accepting new zones? */
8842 if (view->new_zone_file == NULL) {
8843 result = ISC_R_NOPERM;
8844 goto cleanup;
8845 }
8846
8847 cfg = (struct cfg_context *) view->new_zone_config;
8848 if (cfg == NULL) {
8849 result = ISC_R_FAILURE;
8850 goto cleanup;
8851 }
8852
8853 /* Zone shouldn't already exist */
8854 result = dns_zt_find(view->zonetable, dnsname, 0, NULL, &zone);
8855 if (result == ISC_R_SUCCESS) {
8856 result = ISC_R_EXISTS;
8857 goto cleanup;
8858 } else if (result == DNS_R_PARTIALMATCH) {
8859 /* Create our sub-zone anyway */
8860 dns_zone_detach(&zone);
8861 zone = NULL;
8862 }
8863 else if (result != ISC_R_NOTFOUND)
8864 goto cleanup;
8865
8866 /* Find the view statement */
8867 cfg_map_get(cfg->config, "view", &views);
8868 for (element = cfg_list_first(views);
8869 element != NULL;
8870 element = cfg_list_next(element))
8871 {
8872 const char *vname;
8873 vconfig = cfg_listelt_value(element);
8874 vname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name"));
8875 if (vname && !strcasecmp(vname, viewname))
8876 break;
8877 vconfig = NULL;
8878 }
8879
8880 /* Open save file for write configuration */
8881 result = isc_stdio_open(view->new_zone_file, "a", &fp);
8882 if (result != ISC_R_SUCCESS) {
8883 TCHECK(putstr(text, "unable to open '"));
8884 TCHECK(putstr(text, view->new_zone_file));
8885 TCHECK(putstr(text, "': "));
8886 TCHECK(putstr(text, isc_result_totext(result)));
8887 goto cleanup;
8888 }
8889 CHECK(isc_stdio_tell(fp, &offset));
8890 if (offset == 0)
8891 CHECK(add_comment(fp, view->name));
8892
8893 /* Mark view unfrozen so that zone can be added */
8894 result = isc_task_beginexclusive(server->task);
8895 RUNTIME_CHECK(result == ISC_R_SUCCESS);
8896 dns_view_thaw(view);
8897 result = configure_zone(cfg->config, parms, vconfig,
8898 server->mctx, view, NULL, cfg->actx,
8899 ISC_FALSE, ISC_FALSE);
8900 dns_view_freeze(view);
8901 isc_task_endexclusive(server->task);
8902 if (result != ISC_R_SUCCESS) {
8903 TCHECK(putstr(text, "configure_zone failed: "));
8904 TCHECK(putstr(text, isc_result_totext(result)));
8905 goto cleanup;
8906 }
8907
8908 /* Is it there yet? */
8909 CHECK(dns_zt_find(view->zonetable, dnsname, 0, NULL, &zone));
8910
8911 /*
8912 * Load the zone from the master file. If this fails, we'll
8913 * need to undo the configuration we've done already.
8914 */
8915 result = dns_zone_loadnew(zone);
8916 if (result != ISC_R_SUCCESS) {
8917 dns_db_t *dbp = NULL;
8918
8919 TCHECK(putstr(text, "dns_zone_loadnew failed: "));
8920 TCHECK(putstr(text, isc_result_totext(result)));
8921
8922 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8923 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8924 "addzone failed; reverting.");
8925
8926 /* If the zone loaded partially, unload it */
8927 if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
8928 dns_db_detach(&dbp);
8929 dns_zone_unload(zone);
8930 }
8931
8932 /* Remove the zone from the zone table */
8933 dns_zt_unmount(view->zonetable, zone);
8934 goto cleanup;
8935 }
8936
8937 /* Flag the zone as having been added at runtime */
8938 dns_zone_setadded(zone, ISC_TRUE);
8939
8940 /* Emit the zone name, quoted and escaped */
8941 isc_buffer_init(&buf, namebuf, sizeof(namebuf));
8942 CHECK(dns_name_totext(dnsname, ISC_TRUE, &buf));
8943 putnull(&buf);
8944 CHECK(isc_stdio_write("zone \"", 6, 1, fp, NULL));
8945 CHECK(isc_stdio_write(namebuf, strlen(namebuf), 1, fp, NULL));
8946 CHECK(isc_stdio_write("\" ", 2, 1, fp, NULL));
8947
8948 /* Classname, if not default */
8949 if (classname != NULL && *classname != '\0') {
8950 CHECK(isc_stdio_write(classname, strlen(classname), 1, fp,
8951 NULL));
8952 CHECK(isc_stdio_write(" ", 1, 1, fp, NULL));
8953 }
8954
8955 /* Find beginning of option block from args */
8956 for (argp = args; *argp; argp++, arglen--) {
8957 if (*argp == '{') { /* Assume matching '}' */
8958 /* Add that to our file */
8959 CHECK(isc_stdio_write(argp, arglen, 1, fp, NULL));
8960
8961 /* Make sure we end with a LF */
8962 if (argp[arglen-1] != '\n') {
8963 CHECK(isc_stdio_write("\n", 1, 1, fp, NULL));
8964 }
8965 break;
8966 }
8967 }
8968
8969 CHECK(isc_stdio_close(fp));
8970 fp = NULL;
8971 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
8972 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
8973 "zone %s added to view %s via addzone",
8974 zonename, viewname);
8975
8976 /* Adding a zone counts as reconfiguration */
8977 CHECK(isc_time_now(&ns_g_configtime));
8978
8979 result = ISC_R_SUCCESS;
8980
8981 cleanup:
8982 if (isc_buffer_usedlength(text) > 0)
8983 putnull(text);
8984 if (fp != NULL)
8985 isc_stdio_close(fp);
8986 if (parser != NULL) {
8987 if (config != NULL)
8988 cfg_obj_destroy(parser, &config);
8989 cfg_parser_destroy(&parser);
8990 }
8991 if (zone != NULL)
8992 dns_zone_detach(&zone);
8993 if (view != NULL)
8994 dns_view_detach(&view);
8995
8996 return (result);
8997 }
8998
8999 static isc_boolean_t
9000 inuse(const char* file, isc_boolean_t first, isc_buffer_t *text) {
9001 #define INUSEMSG "The following files were in use and may now be removed:\n"
9002
9003 if (file != NULL && isc_file_exists(file) &&
9004 isc_buffer_availablelength(text) >
9005 strlen(file) + (first ? sizeof(INUSEMSG) : sizeof("\n")))
9006 {
9007 if (first)
9008 (void) putstr(text, INUSEMSG);
9009 else
9010 (void) putstr(text, "\n");
9011 (void) putstr(text, file);
9012 return (ISC_FALSE);
9013 }
9014 return (first);
9015 }
9016
9017 /*
9018 * Act on a "delzone" command from the command channel.
9019 */
9020 isc_result_t
9021 ns_server_del_zone(ns_server_t *server, char *args, isc_buffer_t *text) {
9022 isc_result_t result;
9023 dns_zone_t *zone = NULL;
9024 dns_zone_t *raw = NULL;
9025 dns_zone_t *mayberaw;
9026 dns_view_t *view = NULL;
9027 dns_db_t *dbp = NULL;
9028 const char *filename = NULL;
9029 char *tmpname = NULL;
9030 char buf[1024];
9031 const char *zonename = NULL;
9032 size_t znamelen = 0;
9033 FILE *ifp = NULL, *ofp = NULL;
9034 isc_boolean_t exclusive = ISC_FALSE;
9035 isc_boolean_t cleanup = ISC_FALSE;
9036 isc_boolean_t inheader = ISC_TRUE;
9037 const char *file, *arg;
9038
9039 /* Parse parameters */
9040 (void) next_token(&args, " \t");
9041 arg = next_token(&args, " \t");
9042 if (arg != NULL &&
9043 (strcmp(arg, "-clean") == 0 || strcmp(arg, "-clear") == 0)) {
9044 cleanup = ISC_TRUE;
9045 arg = next_token(&args, " \t");
9046 }
9047
9048 CHECK(zone_from_args(server, args, arg, &zone, &zonename,
9049 text, ISC_FALSE));
9050 if (zone == NULL) {
9051 result = ISC_R_UNEXPECTEDEND;
9052 goto cleanup;
9053 }
9054
9055 result = isc_task_beginexclusive(server->task);
9056 RUNTIME_CHECK(result == ISC_R_SUCCESS);
9057 exclusive = ISC_TRUE;
9058
9059 /*
9060 * Was this zone originally added at runtime?
9061 * If not, we can't delete it now.
9062 */
9063 if (!dns_zone_getadded(zone)) {
9064 result = ISC_R_NOPERM;
9065 goto cleanup;
9066 }
9067
9068 INSIST(zonename != NULL);
9069 znamelen = strlen(zonename);
9070
9071 /* Dig out configuration for this zone */
9072 view = dns_zone_getview(zone);
9073 filename = view->new_zone_file;
9074 if (filename == NULL) {
9075 /* No adding zones in this view */
9076 result = ISC_R_FAILURE;
9077 goto cleanup;
9078 }
9079
9080 /* Rewrite zone list */
9081 result = isc_stdio_open(filename, "r", &ifp);
9082 if (ifp != NULL && result == ISC_R_SUCCESS) {
9083 char *found = NULL, *p = NULL;
9084 size_t n;
9085
9086 /* Create a temporary file */
9087 CHECK(isc_string_printf(buf, 1023, "%s.%ld", filename,
9088 (long)getpid()));
9089 if (!(tmpname = isc_mem_strdup(server->mctx, buf))) {
9090 result = ISC_R_NOMEMORY;
9091 goto cleanup;
9092 }
9093 CHECK(isc_stdio_open(tmpname, "w", &ofp));
9094 CHECK(add_comment(ofp, view->name));
9095
9096 /* Look for the entry for that zone */
9097 while (fgets(buf, 1024, ifp)) {
9098 /* Skip initial comment, if any */
9099 if (inheader && *buf == '#')
9100 continue;
9101 if (*buf != '#')
9102 inheader = ISC_FALSE;
9103
9104 /*
9105 * Any other lines not starting with zone, copy
9106 * them out and continue.
9107 */
9108 if (strncasecmp(buf, "zone", 4) != 0) {
9109 fputs(buf, ofp);
9110 continue;
9111 }
9112 p = buf+4;
9113
9114 /* This is a zone; find its name. */
9115 while (*p &&
9116 ((*p == '"') || isspace((unsigned char)*p)))
9117 p++;
9118
9119 /*
9120 * If it's not the zone we're looking for, copy
9121 * it out and continue
9122 */
9123 if (strncasecmp(p, zonename, znamelen) != 0) {
9124 fputs(buf, ofp);
9125 continue;
9126 }
9127
9128 /*
9129 * But if it is the zone we want, skip over it
9130 * so it will be omitted from the new file
9131 */
9132 p += znamelen;
9133 if (isspace((unsigned char)*p) ||
9134 *p == '"' || *p == '{') {
9135 /* This must be the entry */
9136 found = p;
9137 break;
9138 }
9139
9140 /* Copy the rest of the buffer out and continue */
9141 fputs(buf, ofp);
9142 }
9143
9144 /* Skip over an option block (matching # of braces) */
9145 if (found) {
9146 int obrace = 0, cbrace = 0;
9147 for (;;) {
9148 while (*p) {
9149 if (*p == '{') obrace++;
9150 if (*p == '}') cbrace++;
9151 p++;
9152 }
9153 if (obrace && (obrace == cbrace))
9154 break;
9155 if (!fgets(buf, 1024, ifp))
9156 break;
9157 p = buf;
9158 }
9159
9160 /* Just spool the remainder of the file out */
9161 result = isc_stdio_read(buf, 1, 1024, ifp, &n);
9162 while (n > 0U) {
9163 if (result == ISC_R_EOF)
9164 result = ISC_R_SUCCESS;
9165 CHECK(result);
9166 isc_stdio_write(buf, 1, n, ofp, NULL);
9167 result = isc_stdio_read(buf, 1, 1024, ifp, &n);
9168 }
9169
9170 /*
9171 * Close files before overwriting the nzfile
9172 * with the temporary file as it's necessary on
9173 * some platforms (win32).
9174 */
9175 (void) isc_stdio_close(ifp);
9176 ifp = NULL;
9177 (void) isc_stdio_close(ofp);
9178 ofp = NULL;
9179
9180 /* Move temporary into place */
9181 CHECK(isc_file_rename(tmpname, view->new_zone_file));
9182 } else {
9183 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
9184 NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
9185 "deleted zone %s was missing from "
9186 "new zone file", zonename);
9187 goto cleanup;
9188 }
9189 }
9190
9191 /* Stop answering for this zone */
9192 if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
9193 dns_db_detach(&dbp);
9194 dns_zone_unload(zone);
9195 }
9196
9197 /* Clean up stub / slave zone files */
9198 dns_zone_getraw(zone, &raw);
9199 mayberaw = (raw != NULL) ? raw : zone;
9200 if (cleanup) {
9201 isc_result_t tresult;
9202
9203 file = dns_zone_getfile(mayberaw);
9204 if (isc_file_exists(file))
9205 isc_file_remove(file);
9206
9207 file = dns_zone_getjournal(mayberaw);
9208 if (isc_file_exists(file))
9209 isc_file_remove(file);
9210
9211 if (zone != mayberaw) {
9212 file = dns_zone_getfile(zone);
9213 if (isc_file_exists(file))
9214 isc_file_remove(file);
9215
9216 file = dns_zone_getjournal(zone);
9217 if (isc_file_exists(file))
9218 isc_file_remove(file);
9219 }
9220 TCHECK(putstr(text, "zone "));
9221 TCHECK(putstr(text, zonename));
9222 TCHECK(putstr(text, " and associated files deleted"));
9223 TCHECK(putnull(text));
9224 } else if (dns_zone_gettype(mayberaw) == dns_zone_slave ||
9225 dns_zone_gettype(mayberaw) == dns_zone_stub)
9226 {
9227 isc_boolean_t first;
9228
9229 file = dns_zone_getfile(mayberaw);
9230 first = inuse(file, ISC_TRUE, text);
9231
9232 file = dns_zone_getjournal(mayberaw);
9233 first = inuse(file, first, text);
9234
9235 if (zone != mayberaw) {
9236 file = dns_zone_getfile(zone);
9237 first = inuse(file, first, text);
9238
9239 file = dns_zone_getjournal(zone);
9240 (void)inuse(file, first, text);
9241 }
9242 putnull(text);
9243 }
9244
9245 CHECK(dns_zt_unmount(view->zonetable, zone));
9246
9247 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
9248 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
9249 "zone %s removed via delzone", zonename);
9250
9251 /* Removing a zone counts as reconfiguration */
9252 CHECK(isc_time_now(&ns_g_configtime));
9253
9254 result = ISC_R_SUCCESS;
9255
9256 cleanup:
9257 if (isc_buffer_usedlength(text) > 0)
9258 putnull(text);
9259 if (exclusive)
9260 isc_task_endexclusive(server->task);
9261 if (ifp != NULL)
9262 isc_stdio_close(ifp);
9263 if (ofp != NULL)
9264 isc_stdio_close(ofp);
9265 if (tmpname != NULL) {
9266 isc_file_remove(tmpname);
9267 isc_mem_free(server->mctx, tmpname);
9268 }
9269 if (raw != NULL)
9270 dns_zone_detach(&raw);
9271 if (zone != NULL)
9272 dns_zone_detach(&zone);
9273
9274 return (result);
9275 }
9276
9277 static void
9278 newzone_cfgctx_destroy(void **cfgp) {
9279 struct cfg_context *cfg;
9280
9281 REQUIRE(cfgp != NULL && *cfgp != NULL);
9282
9283 cfg = *cfgp;
9284
9285 if (cfg->actx != NULL)
9286 cfg_aclconfctx_detach(&cfg->actx);
9287
9288 if (cfg->parser != NULL) {
9289 if (cfg->config != NULL)
9290 cfg_obj_destroy(cfg->parser, &cfg->config);
9291 cfg_parser_destroy(&cfg->parser);
9292 }
9293 if (cfg->nzparser != NULL) {
9294 if (cfg->nzconfig != NULL)
9295 cfg_obj_destroy(cfg->nzparser, &cfg->nzconfig);
9296 cfg_parser_destroy(&cfg->nzparser);
9297 }
9298
9299 isc_mem_putanddetach(&cfg->mctx, cfg, sizeof(*cfg));
9300 *cfgp = NULL;
9301 }
9302
9303 static isc_result_t
9304 generate_salt(unsigned char *salt, size_t saltlen) {
9305 int i, n;
9306 union {
9307 unsigned char rnd[256];
9308 isc_uint32_t rnd32[64];
9309 } rnd;
9310 unsigned char text[512 + 1];
9311 isc_region_t r;
9312 isc_buffer_t buf;
9313 isc_result_t result;
9314
9315 if (saltlen > 256U)
9316 return (ISC_R_RANGE);
9317
9318 n = (int) (saltlen + sizeof(isc_uint32_t) - 1) / sizeof(isc_uint32_t);
9319 for (i = 0; i < n; i++)
9320 isc_random_get(&rnd.rnd32[i]);
9321
9322 memmove(salt, rnd.rnd, saltlen);
9323
9324 r.base = rnd.rnd;
9325 r.length = (unsigned int) saltlen;
9326
9327 isc_buffer_init(&buf, text, sizeof(text));
9328 result = isc_hex_totext(&r, 2, "", &buf);
9329 RUNTIME_CHECK(result == ISC_R_SUCCESS);
9330 text[saltlen * 2] = 0;
9331
9332 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
9333 NS_LOGMODULE_SERVER, ISC_LOG_INFO,
9334 "generated salt: %s", text);
9335
9336 return (ISC_R_SUCCESS);
9337 }
9338
9339 isc_result_t
9340 ns_server_signing(ns_server_t *server, char *args, isc_buffer_t *text) {
9341 isc_result_t result = ISC_R_SUCCESS;
9342 dns_zone_t *zone = NULL;
9343 dns_name_t *origin;
9344 dns_db_t *db = NULL;
9345 dns_dbnode_t *node = NULL;
9346 dns_dbversion_t *version = NULL;
9347 dns_rdatatype_t privatetype;
9348 dns_rdataset_t privset;
9349 isc_boolean_t first = ISC_TRUE;
9350 isc_boolean_t list = ISC_FALSE, clear = ISC_FALSE;
9351 isc_boolean_t chain = ISC_FALSE;
9352 char keystr[DNS_SECALG_FORMATSIZE + 7]; /* <5-digit keyid>/<alg> */
9353 unsigned short hash = 0, flags = 0, iter = 0, saltlen = 0;
9354 unsigned char salt[255];
9355 const char *ptr;
9356 size_t n;
9357
9358 dns_rdataset_init(&privset);
9359
9360 /* Skip the command name. */
9361 ptr = next_token(&args, " \t");
9362 if (ptr == NULL)
9363 return (ISC_R_UNEXPECTEDEND);
9364
9365 /* Find out what we are to do. */
9366 ptr = next_token(&args, " \t");
9367 if (ptr == NULL)
9368 return (ISC_R_UNEXPECTEDEND);
9369
9370 if (strcasecmp(ptr, "-list") == 0)
9371 list = ISC_TRUE;
9372 else if ((strcasecmp(ptr, "-clear") == 0) ||
9373 (strcasecmp(ptr, "-clean") == 0)) {
9374 clear = ISC_TRUE;
9375 ptr = next_token(&args, " \t");
9376 if (ptr == NULL)
9377 return (ISC_R_UNEXPECTEDEND);
9378 strlcpy(keystr, ptr, sizeof(keystr));
9379 } else if (strcasecmp(ptr, "-nsec3param") == 0) {
9380 const char *hashstr, *flagstr, *iterstr;
9381 char nbuf[512];
9382
9383 chain = ISC_TRUE;
9384 hashstr = next_token(&args, " \t");
9385 if (hashstr == NULL)
9386 return (ISC_R_UNEXPECTEDEND);
9387
9388 if (strcasecmp(hashstr, "none") == 0)
9389 hash = 0;
9390 else {
9391 flagstr = next_token(&args, " \t");
9392 iterstr = next_token(&args, " \t");
9393 if (flagstr == NULL || iterstr == NULL)
9394 return (ISC_R_UNEXPECTEDEND);
9395
9396 n = snprintf(nbuf, sizeof(nbuf), "%s %s %s",
9397 hashstr, flagstr, iterstr);
9398 if (n == sizeof(nbuf))
9399 return (ISC_R_NOSPACE);
9400 n = sscanf(nbuf, "%hu %hu %hu", &hash, &flags, &iter);
9401 if (n != 3U)
9402 return (ISC_R_BADNUMBER);
9403
9404 if (hash > 0xffU || flags > 0xffU)
9405 return (ISC_R_RANGE);
9406
9407 ptr = next_token(&args, " \t");
9408 if (ptr == NULL) {
9409 return (ISC_R_UNEXPECTEDEND);
9410 } else if (strcasecmp(ptr, "auto") == 0) {
9411 /* Auto-generate a random salt.
9412 * XXXMUKS: This currently uses the
9413 * minimum recommended length by RFC
9414 * 5155 (64 bits). It should be made
9415 * configurable.
9416 */
9417 saltlen = 8;
9418 CHECK(generate_salt(salt, saltlen));
9419 } else if (strcmp(ptr, "-") != 0) {
9420 isc_buffer_t buf;
9421
9422 isc_buffer_init(&buf, salt, sizeof(salt));
9423 CHECK(isc_hex_decodestring(ptr, &buf));
9424 saltlen = isc_buffer_usedlength(&buf);
9425 }
9426 }
9427 } else
9428 CHECK(DNS_R_SYNTAX);
9429
9430 CHECK(zone_from_args(server, args, NULL, &zone, NULL,
9431 text, ISC_FALSE));
9432 if (zone == NULL)
9433 CHECK(ISC_R_UNEXPECTEDEND);
9434
9435 if (clear) {
9436 CHECK(dns_zone_keydone(zone, keystr));
9437 putstr(text, "request queued");
9438 putnull(text);
9439 } else if (chain) {
9440 CHECK(dns_zone_setnsec3param(zone, (isc_uint8_t)hash,
9441 (isc_uint8_t)flags, iter,
9442 (isc_uint8_t)saltlen, salt,
9443 ISC_TRUE));
9444 putstr(text, "request queued");
9445 putnull(text);
9446 } else if (list) {
9447 privatetype = dns_zone_getprivatetype(zone);
9448 origin = dns_zone_getorigin(zone);
9449 CHECK(dns_zone_getdb(zone, &db));
9450 CHECK(dns_db_findnode(db, origin, ISC_FALSE, &node));
9451 dns_db_currentversion(db, &version);
9452
9453 result = dns_db_findrdataset(db, node, version, privatetype,
9454 dns_rdatatype_none, 0,
9455 &privset, NULL);
9456 if (result == ISC_R_NOTFOUND) {
9457 putstr(text, "No signing records found");
9458 putnull(text);
9459 result = ISC_R_SUCCESS;
9460 goto cleanup;
9461 }
9462
9463 for (result = dns_rdataset_first(&privset);
9464 result == ISC_R_SUCCESS;
9465 result = dns_rdataset_next(&privset))
9466 {
9467 dns_rdata_t priv = DNS_RDATA_INIT;
9468 char output[BUFSIZ];
9469 isc_buffer_t buf;
9470
9471 dns_rdataset_current(&privset, &priv);
9472
9473 isc_buffer_init(&buf, output, sizeof(output));
9474 CHECK(dns_private_totext(&priv, &buf));
9475
9476 if (!first)
9477 putstr(text, "\n");
9478 first = ISC_FALSE;
9479
9480 n = snprintf((char *)isc_buffer_used(text),
9481 isc_buffer_availablelength(text),
9482 "%s", output);
9483 if (n >= isc_buffer_availablelength(text))
9484 CHECK(ISC_R_NOSPACE);
9485
9486 isc_buffer_add(text, (unsigned int)n);
9487 }
9488 if (!first)
9489 putnull(text);
9490
9491 if (result == ISC_R_NOMORE)
9492 result = ISC_R_SUCCESS;
9493 }
9494
9495 cleanup:
9496 if (dns_rdataset_isassociated(&privset))
9497 dns_rdataset_disassociate(&privset);
9498 if (node != NULL)
9499 dns_db_detachnode(db, &node);
9500 if (version != NULL)
9501 dns_db_closeversion(db, &version, ISC_FALSE);
9502 if (db != NULL)
9503 dns_db_detach(&db);
9504 if (zone != NULL)
9505 dns_zone_detach(&zone);
9506
9507 return (result);
9508 }
9509
9510 static isc_result_t
9511 putstr(isc_buffer_t *b, const char *str) {
9512 unsigned int l = strlen(str);
9513
9514 /*
9515 * Use >= to leave space for NUL termination.
9516 */
9517 if (l >= isc_buffer_availablelength(b))
9518 return (ISC_R_NOSPACE);
9519
9520 isc_buffer_putmem(b, (const unsigned char *)str, l);
9521 return (ISC_R_SUCCESS);
9522 }
9523
9524 static isc_result_t
9525 putnull(isc_buffer_t *b) {
9526 if (isc_buffer_availablelength(b) == 0)
9527 return (ISC_R_NOSPACE);
9528
9529 isc_buffer_putuint8(b, 0);
9530 return (ISC_R_SUCCESS);
9531 }
9532
9533 isc_result_t
9534 ns_server_zonestatus(ns_server_t *server, char *args, isc_buffer_t *text) {
9535 isc_result_t result = ISC_R_SUCCESS;
9536 dns_zone_t *zone = NULL, *raw = NULL;
9537 const char *type, *file, *zonename = NULL;
9538 isc_uint32_t serial, signed_serial, nodes;
9539 char serbuf[16], sserbuf[16], nodebuf[16], resignbuf[512];
9540 char lbuf[80], xbuf[80], rbuf[80], kbuf[80], rtbuf[80];
9541 isc_time_t loadtime, expiretime, refreshtime;
9542 isc_time_t refreshkeytime, resigntime;
9543 dns_zonetype_t zonetype;
9544 isc_boolean_t dynamic = ISC_FALSE, frozen = ISC_FALSE;
9545 isc_boolean_t hasraw = ISC_FALSE;
9546 isc_boolean_t secure, maintain, allow;
9547 dns_db_t *db = NULL, *rawdb = NULL;
9548 char **incfiles = NULL;
9549 int nfiles = 0;
9550
9551 isc_time_settoepoch(&loadtime);
9552 isc_time_settoepoch(&refreshtime);
9553 isc_time_settoepoch(&expiretime);
9554 isc_time_settoepoch(&refreshkeytime);
9555 isc_time_settoepoch(&resigntime);
9556
9557 CHECK(zone_from_args(server, args, NULL, &zone, &zonename,
9558 text, ISC_TRUE));
9559 if (zone == NULL) {
9560 result = ISC_R_UNEXPECTEDEND;
9561 goto cleanup;
9562 }
9563
9564 zonetype = dns_zone_gettype(zone);
9565 switch (zonetype) {
9566 case dns_zone_master:
9567 type = "master";
9568 break;
9569 case dns_zone_slave:
9570 type = "slave";
9571 break;
9572 case dns_zone_stub:
9573 type = "stub";
9574 break;
9575 case dns_zone_staticstub:
9576 type = "staticstub";
9577 break;
9578 case dns_zone_redirect:
9579 type = "redirect";
9580 break;
9581 case dns_zone_key:
9582 type = "key";
9583 break;
9584 case dns_zone_dlz:
9585 type = "dlz";
9586 break;
9587 default:
9588 type = "unknown";
9589 }
9590
9591 /* Inline signing? */
9592 CHECK(dns_zone_getdb(zone, &db));
9593 dns_zone_getraw(zone, &raw);
9594 hasraw = ISC_TF(raw != NULL);
9595 if (hasraw)
9596 CHECK(dns_zone_getdb(raw, &rawdb));
9597
9598 /* Serial number */
9599 serial = dns_zone_getserial(hasraw ? raw : zone);
9600 snprintf(serbuf, sizeof(serbuf), "%d", serial);
9601 if (hasraw) {
9602 signed_serial = dns_zone_getserial(zone);
9603 snprintf(sserbuf, sizeof(sserbuf), "%d", signed_serial);
9604 }
9605
9606 /* Database node count */
9607 nodes = dns_db_nodecount(hasraw ? rawdb : db);
9608 snprintf(nodebuf, sizeof(nodebuf), "%d", nodes);
9609
9610 /* Security */
9611 secure = dns_db_issecure(db);
9612 allow = ISC_TF((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_ALLOW) != 0);
9613 maintain = ISC_TF((dns_zone_getkeyopts(zone) &
9614 DNS_ZONEKEY_MAINTAIN) != 0);
9615
9616 /* Master files */
9617 file = dns_zone_getfile(hasraw ? raw : zone);
9618 nfiles = dns_zone_getincludes(hasraw ? raw : zone, &incfiles);
9619
9620 /* Load time */
9621 dns_zone_getloadtime(zone, &loadtime);
9622 isc_time_formathttptimestamp(&loadtime, lbuf, sizeof(lbuf));
9623
9624 /* Refresh/expire times */
9625 if (zonetype == dns_zone_slave ||
9626 zonetype == dns_zone_stub ||
9627 zonetype == dns_zone_redirect)
9628 {
9629 dns_zone_getexpiretime(zone, &expiretime);
9630 isc_time_formathttptimestamp(&expiretime, xbuf, sizeof(xbuf));
9631 dns_zone_getrefreshtime(zone, &refreshtime);
9632 isc_time_formathttptimestamp(&refreshtime, rbuf, sizeof(rbuf));
9633 }
9634
9635 /* Key refresh time */
9636 if (zonetype == dns_zone_master ||
9637 (zonetype == dns_zone_slave && hasraw))
9638 {
9639 dns_zone_getrefreshkeytime(zone, &refreshkeytime);
9640 isc_time_formathttptimestamp(&refreshkeytime, kbuf,
9641 sizeof(kbuf));
9642 }
9643
9644 /* Dynamic? */
9645 if (zonetype == dns_zone_master) {
9646 dynamic = dns_zone_isdynamic(hasraw ? raw : zone, ISC_TRUE);
9647 frozen = dynamic && !dns_zone_isdynamic(hasraw ? raw : zone,
9648 ISC_FALSE);
9649 }
9650
9651 /* Next resign event */
9652 if (secure && (zonetype == dns_zone_master ||
9653 (zonetype == dns_zone_slave && hasraw)) &&
9654 ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_NORESIGN) == 0))
9655 {
9656 dns_name_t *name;
9657 dns_fixedname_t fixed;
9658 dns_rdataset_t next;
9659
9660 dns_rdataset_init(&next);
9661 dns_fixedname_init(&fixed);
9662 name = dns_fixedname_name(&fixed);
9663
9664 result = dns_db_getsigningtime(db, &next, name);
9665 if (result == ISC_R_SUCCESS) {
9666 isc_stdtime_t timenow;
9667 char namebuf[DNS_NAME_FORMATSIZE];
9668 char typebuf[DNS_RDATATYPE_FORMATSIZE];
9669
9670 isc_stdtime_get(&timenow);
9671 dns_name_format(name, namebuf, sizeof(namebuf));
9672 dns_rdatatype_format(next.covers,
9673 typebuf, sizeof(typebuf));
9674 snprintf(resignbuf, sizeof(resignbuf),
9675 "%s/%s", namebuf, typebuf);
9676 isc_time_set(&resigntime, next.resign -
9677 dns_zone_getsigresigninginterval(zone), 0);
9678 isc_time_formathttptimestamp(&resigntime, rtbuf,
9679 sizeof(rtbuf));
9680 dns_rdataset_disassociate(&next);
9681 }
9682 }
9683
9684 /* Create text */
9685 CHECK(putstr(text, "name: "));
9686 CHECK(putstr(text, zonename));
9687
9688 CHECK(putstr(text, "\ntype: "));
9689 CHECK(putstr(text, type));
9690
9691 if (file != NULL) {
9692 int i;
9693 CHECK(putstr(text, "\nfiles: "));
9694 CHECK(putstr(text, file));
9695 for (i = 0; i < nfiles; i++) {
9696 CHECK(putstr(text, ", "));
9697 if (incfiles[i] != NULL)
9698 CHECK(putstr(text, incfiles[i]));
9699 }
9700 }
9701
9702 CHECK(putstr(text, "\nserial: "));
9703 CHECK(putstr(text, serbuf));
9704 if (hasraw) {
9705 CHECK(putstr(text, "\nsigned serial: "));
9706 CHECK(putstr(text, sserbuf));
9707 }
9708
9709 CHECK(putstr(text, "\nnodes: "));
9710 CHECK(putstr(text, nodebuf));
9711
9712 if (! isc_time_isepoch(&loadtime)) {
9713 CHECK(putstr(text, "\nlast loaded: "));
9714 CHECK(putstr(text, lbuf));
9715 }
9716
9717 if (! isc_time_isepoch(&refreshtime)) {
9718 CHECK(putstr(text, "\nnext refresh: "));
9719 CHECK(putstr(text, rbuf));
9720 }
9721
9722 if (! isc_time_isepoch(&expiretime)) {
9723 CHECK(putstr(text, "\nexpires: "));
9724 CHECK(putstr(text, xbuf));
9725 }
9726
9727 if (secure) {
9728 CHECK(putstr(text, "\nsecure: yes"));
9729 if (hasraw)
9730 CHECK(putstr(text, "\ninline signing: yes"));
9731 else
9732 CHECK(putstr(text, "\ninline signing: no"));
9733 } else
9734 CHECK(putstr(text, "\nsecure: no"));
9735
9736 if (maintain) {
9737 CHECK(putstr(text, "\nkey maintenance: automatic"));
9738 if (! isc_time_isepoch(&refreshkeytime)) {
9739 CHECK(putstr(text, "\nnext key event: "));
9740 CHECK(putstr(text, kbuf));
9741 }
9742 } else if (allow)
9743 CHECK(putstr(text, "\nkey maintenance: on command"));
9744 else if (secure || hasraw)
9745 CHECK(putstr(text, "\nkey maintenance: none"));
9746
9747 if (!isc_time_isepoch(&resigntime)) {
9748 CHECK(putstr(text, "\nnext resign node: "));
9749 CHECK(putstr(text, resignbuf));
9750 CHECK(putstr(text, "\nnext resign time: "));
9751 CHECK(putstr(text, rtbuf));
9752 }
9753
9754 if (dynamic) {
9755 CHECK(putstr(text, "\ndynamic: yes"));
9756 if (frozen)
9757 CHECK(putstr(text, "\nfrozen: yes"));
9758 else
9759 CHECK(putstr(text, "\nfrozen: no"));
9760 } else
9761 CHECK(putstr(text, "\ndynamic: no"));
9762
9763 cleanup:
9764 /* Indicate truncated output if possible. */
9765 if (result == ISC_R_NOSPACE)
9766 (void) putstr(text, "\n...");
9767 if ((result == ISC_R_SUCCESS || result == ISC_R_NOSPACE))
9768 putnull(text);
9769
9770 if (db != NULL)
9771 dns_db_detach(&db);
9772 if (rawdb != NULL)
9773 dns_db_detach(&rawdb);
9774 if (incfiles != NULL) {
9775 int i;
9776 isc_mem_t *mctx = dns_zone_getmctx(hasraw ? raw : zone);
9777
9778 for (i = 0; i < nfiles; i++)
9779 if (incfiles[i] != NULL)
9780 isc_mem_free(mctx, incfiles[i]);
9781 isc_mem_free(mctx, incfiles);
9782 }
9783 if (raw != NULL)
9784 dns_zone_detach(&raw);
9785 if (zone != NULL)
9786 dns_zone_detach(&zone);
9787 return (result);
9788 }
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