2 * Portions Copyright (C) 2005-2012 Internet Systems Consortium, Inc. ("ISC")
3 * Portions Copyright (C) 1999-2001 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
19 * Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl.
21 * Permission to use, copy, modify, and distribute this software for any
22 * purpose with or without fee is hereby granted, provided that the
23 * above copyright notice and this permission notice appear in all
26 * THE SOFTWARE IS PROVIDED "AS IS" AND STICHTING NLNET
27 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
29 * STICHTING NLNET BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
30 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
31 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
32 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
33 * USE OR PERFORMANCE OF THIS SOFTWARE.
35 * The development of Dynamically Loadable Zones (DLZ) for Bind 9 was
36 * conceived and contributed by Rob Butler.
38 * Permission to use, copy, modify, and distribute this software for any
39 * purpose with or without fee is hereby granted, provided that the
40 * above copyright notice and this permission notice appear in all
43 * THE SOFTWARE IS PROVIDED "AS IS" AND ROB BUTLER
44 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
46 * ROB BUTLER BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
47 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
48 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
49 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
50 * USE OR PERFORMANCE OF THIS SOFTWARE.
60 #include <isc/buffer.h>
63 #include <isc/rwlock.h>
64 #include <isc/string.h>
66 #include <isc/magic.h>
69 #include <isc/print.h>
70 #include <isc/region.h>
72 #include <dns/callbacks.h>
74 #include <dns/dbiterator.h>
76 #include <dns/fixedname.h>
78 #include <dns/rdata.h>
79 #include <dns/rdatalist.h>
80 #include <dns/rdataset.h>
81 #include <dns/rdatasetiter.h>
82 #include <dns/rdatatype.h>
83 #include <dns/result.h>
84 #include <dns/master.h>
86 #include <dns/types.h>
88 #include "rdatalist_p.h"
94 struct dns_sdlzimplementation {
95 const dns_sdlzmethods_t *methods;
99 isc_mutex_t driverlock;
100 dns_dlzimplementation_t *dlz_imp;
107 dns_sdlzimplementation_t *dlzimp;
108 isc_mutex_t refcnt_lock;
110 unsigned int references;
111 dns_dbversion_t *future_version;
115 struct dns_sdlzlookup {
119 ISC_LIST(dns_rdatalist_t) lists;
120 ISC_LIST(isc_buffer_t) buffers;
122 ISC_LINK(dns_sdlzlookup_t) link;
124 dns_rdatacallbacks_t callbacks;
126 unsigned int references;
129 typedef struct dns_sdlzlookup dns_sdlznode_t;
131 struct dns_sdlzallnodes {
132 dns_dbiterator_t common;
133 ISC_LIST(dns_sdlznode_t) nodelist;
134 dns_sdlznode_t *current;
135 dns_sdlznode_t *origin;
138 typedef dns_sdlzallnodes_t sdlz_dbiterator_t;
140 typedef struct sdlz_rdatasetiter {
141 dns_rdatasetiter_t common;
142 dns_rdatalist_t *current;
143 } sdlz_rdatasetiter_t;
146 #define SDLZDB_MAGIC ISC_MAGIC('D', 'L', 'Z', 'S')
149 * Note that "impmagic" is not the first four bytes of the struct, so
150 * ISC_MAGIC_VALID cannot be used.
153 #define VALID_SDLZDB(sdlzdb) ((sdlzdb) != NULL && \
154 (sdlzdb)->common.impmagic == SDLZDB_MAGIC)
156 #define SDLZLOOKUP_MAGIC ISC_MAGIC('D','L','Z','L')
157 #define VALID_SDLZLOOKUP(sdlzl) ISC_MAGIC_VALID(sdlzl, SDLZLOOKUP_MAGIC)
158 #define VALID_SDLZNODE(sdlzn) VALID_SDLZLOOKUP(sdlzn)
160 /* These values are taken from RFC 1537 */
161 #define SDLZ_DEFAULT_REFRESH (60 * 60 * 8)
162 #define SDLZ_DEFAULT_RETRY (60 * 60 * 2)
163 #define SDLZ_DEFAULT_EXPIRE (60 * 60 * 24 * 7)
164 #define SDLZ_DEFAULT_MINIMUM (60 * 60 * 24)
166 /* This is a reasonable value */
167 #define SDLZ_DEFAULT_TTL (60 * 60 * 24)
170 #define MAYBE_LOCK(imp) LOCK(&imp->driverlock)
171 #define MAYBE_UNLOCK(imp) UNLOCK(&imp->driverlock)
173 #define MAYBE_LOCK(imp) \
175 unsigned int flags = imp->flags; \
176 if ((flags & DNS_SDLZFLAG_THREADSAFE) == 0) \
177 LOCK(&imp->driverlock); \
180 #define MAYBE_UNLOCK(imp) \
182 unsigned int flags = imp->flags; \
183 if ((flags & DNS_SDLZFLAG_THREADSAFE) == 0) \
184 UNLOCK(&imp->driverlock); \
189 * Forward references. Try to keep these to a minimum.
192 static void list_tordataset(dns_rdatalist_t *rdatalist,
193 dns_db_t *db, dns_dbnode_t *node,
194 dns_rdataset_t *rdataset);
196 static void detachnode(dns_db_t *db, dns_dbnode_t **targetp);
198 static void dbiterator_destroy(dns_dbiterator_t **iteratorp);
199 static isc_result_t dbiterator_first(dns_dbiterator_t *iterator);
200 static isc_result_t dbiterator_last(dns_dbiterator_t *iterator);
201 static isc_result_t dbiterator_seek(dns_dbiterator_t *iterator,
203 static isc_result_t dbiterator_prev(dns_dbiterator_t *iterator);
204 static isc_result_t dbiterator_next(dns_dbiterator_t *iterator);
205 static isc_result_t dbiterator_current(dns_dbiterator_t *iterator,
206 dns_dbnode_t **nodep,
208 static isc_result_t dbiterator_pause(dns_dbiterator_t *iterator);
209 static isc_result_t dbiterator_origin(dns_dbiterator_t *iterator,
212 static dns_dbiteratormethods_t dbiterator_methods = {
229 * Log a message at the given level
232 sdlz_log(int level, const char *fmt, ...) {
235 isc_log_vwrite(dns_lctx, DNS_LOGCATEGORY_DATABASE,
236 DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(level),
241 /*% Converts the input string to lowercase, in place. */
243 dns_sdlz_tolower(char *str) {
244 unsigned int len = strlen(str);
247 for (i = 0; i < len; i++) {
248 if (str[i] >= 'A' && str[i] <= 'Z')
253 static inline unsigned int
254 initial_size(const char *data) {
255 unsigned int len = (strlen(data) / 64) + 1;
256 return (len * 64 + 64);
260 * Rdataset Iterator Methods. These methods were "borrowed" from the SDB
261 * driver interface. See the SDB driver interface documentation for more info.
265 rdatasetiter_destroy(dns_rdatasetiter_t **iteratorp) {
266 sdlz_rdatasetiter_t *sdlziterator =
267 (sdlz_rdatasetiter_t *)(*iteratorp);
269 detachnode(sdlziterator->common.db, &sdlziterator->common.node);
270 isc_mem_put(sdlziterator->common.db->mctx, sdlziterator,
271 sizeof(sdlz_rdatasetiter_t));
276 rdatasetiter_first(dns_rdatasetiter_t *iterator) {
277 sdlz_rdatasetiter_t *sdlziterator = (sdlz_rdatasetiter_t *)iterator;
278 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *)iterator->node;
280 if (ISC_LIST_EMPTY(sdlznode->lists))
281 return (ISC_R_NOMORE);
282 sdlziterator->current = ISC_LIST_HEAD(sdlznode->lists);
283 return (ISC_R_SUCCESS);
287 rdatasetiter_next(dns_rdatasetiter_t *iterator) {
288 sdlz_rdatasetiter_t *sdlziterator = (sdlz_rdatasetiter_t *)iterator;
290 sdlziterator->current = ISC_LIST_NEXT(sdlziterator->current, link);
291 if (sdlziterator->current == NULL)
292 return (ISC_R_NOMORE);
294 return (ISC_R_SUCCESS);
298 rdatasetiter_current(dns_rdatasetiter_t *iterator, dns_rdataset_t *rdataset) {
299 sdlz_rdatasetiter_t *sdlziterator = (sdlz_rdatasetiter_t *)iterator;
301 list_tordataset(sdlziterator->current, iterator->db, iterator->node,
305 static dns_rdatasetitermethods_t rdatasetiter_methods = {
306 rdatasetiter_destroy,
313 * DB routines. These methods were "borrowed" from the SDB driver interface.
314 * See the SDB driver interface documentation for more info.
318 attach(dns_db_t *source, dns_db_t **targetp) {
319 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *) source;
321 REQUIRE(VALID_SDLZDB(sdlz));
323 LOCK(&sdlz->refcnt_lock);
324 REQUIRE(sdlz->references > 0);
326 UNLOCK(&sdlz->refcnt_lock);
332 destroy(dns_sdlz_db_t *sdlz) {
334 mctx = sdlz->common.mctx;
336 sdlz->common.magic = 0;
337 sdlz->common.impmagic = 0;
339 (void)isc_mutex_destroy(&sdlz->refcnt_lock);
341 dns_name_free(&sdlz->common.origin, mctx);
343 isc_mem_put(mctx, sdlz, sizeof(dns_sdlz_db_t));
344 isc_mem_detach(&mctx);
348 detach(dns_db_t **dbp) {
349 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)(*dbp);
350 isc_boolean_t need_destroy = ISC_FALSE;
352 REQUIRE(VALID_SDLZDB(sdlz));
353 LOCK(&sdlz->refcnt_lock);
354 REQUIRE(sdlz->references > 0);
356 if (sdlz->references == 0)
357 need_destroy = ISC_TRUE;
358 UNLOCK(&sdlz->refcnt_lock);
367 beginload(dns_db_t *db, dns_addrdatasetfunc_t *addp, dns_dbload_t **dbloadp) {
371 return (ISC_R_NOTIMPLEMENTED);
375 endload(dns_db_t *db, dns_dbload_t **dbloadp) {
378 return (ISC_R_NOTIMPLEMENTED);
382 dump(dns_db_t *db, dns_dbversion_t *version, const char *filename,
383 dns_masterformat_t masterformat)
388 UNUSED(masterformat);
389 return (ISC_R_NOTIMPLEMENTED);
393 currentversion(dns_db_t *db, dns_dbversion_t **versionp) {
394 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
395 REQUIRE(VALID_SDLZDB(sdlz));
396 REQUIRE(versionp != NULL && *versionp == NULL);
398 *versionp = (void *) &sdlz->dummy_version;
403 newversion(dns_db_t *db, dns_dbversion_t **versionp) {
404 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
405 char origin[DNS_NAME_MAXTEXT + 1];
408 REQUIRE(VALID_SDLZDB(sdlz));
410 if (sdlz->dlzimp->methods->newversion == NULL)
411 return (ISC_R_NOTIMPLEMENTED);
413 dns_name_format(&sdlz->common.origin, origin, sizeof(origin));
415 result = sdlz->dlzimp->methods->newversion(origin,
416 sdlz->dlzimp->driverarg,
417 sdlz->dbdata, versionp);
418 if (result != ISC_R_SUCCESS) {
419 sdlz_log(ISC_LOG_ERROR,
420 "sdlz newversion on origin %s failed : %s",
421 origin, isc_result_totext(result));
425 sdlz->future_version = *versionp;
426 return (ISC_R_SUCCESS);
430 attachversion(dns_db_t *db, dns_dbversion_t *source,
431 dns_dbversion_t **targetp)
433 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
435 REQUIRE(VALID_SDLZDB(sdlz));
436 REQUIRE(source != NULL && source == (void *)&sdlz->dummy_version);
442 closeversion(dns_db_t *db, dns_dbversion_t **versionp, isc_boolean_t commit) {
443 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
444 char origin[DNS_NAME_MAXTEXT + 1];
446 REQUIRE(VALID_SDLZDB(sdlz));
447 REQUIRE(versionp != NULL);
449 if (*versionp == (void *)&sdlz->dummy_version) {
454 REQUIRE(*versionp == sdlz->future_version);
455 REQUIRE(sdlz->dlzimp->methods->closeversion != NULL);
457 dns_name_format(&sdlz->common.origin, origin, sizeof(origin));
459 sdlz->dlzimp->methods->closeversion(origin, commit,
460 sdlz->dlzimp->driverarg,
461 sdlz->dbdata, versionp);
462 if (*versionp != NULL)
463 sdlz_log(ISC_LOG_ERROR,
464 "sdlz closeversion on origin %s failed", origin);
466 sdlz->future_version = NULL;
470 createnode(dns_sdlz_db_t *sdlz, dns_sdlznode_t **nodep) {
471 dns_sdlznode_t *node;
474 node = isc_mem_get(sdlz->common.mctx, sizeof(dns_sdlznode_t));
476 return (ISC_R_NOMEMORY);
479 attach((dns_db_t *)sdlz, (dns_db_t **)&node->sdlz);
480 ISC_LIST_INIT(node->lists);
481 ISC_LIST_INIT(node->buffers);
482 ISC_LINK_INIT(node, link);
484 result = isc_mutex_init(&node->lock);
485 if (result != ISC_R_SUCCESS) {
486 UNEXPECTED_ERROR(__FILE__, __LINE__,
487 "isc_mutex_init() failed: %s",
488 isc_result_totext(result));
489 isc_mem_put(sdlz->common.mctx, node, sizeof(dns_sdlznode_t));
490 return (ISC_R_UNEXPECTED);
492 dns_rdatacallbacks_init(&node->callbacks);
493 node->references = 1;
494 node->magic = SDLZLOOKUP_MAGIC;
497 return (ISC_R_SUCCESS);
501 destroynode(dns_sdlznode_t *node) {
502 dns_rdatalist_t *list;
510 mctx = sdlz->common.mctx;
512 while (!ISC_LIST_EMPTY(node->lists)) {
513 list = ISC_LIST_HEAD(node->lists);
514 while (!ISC_LIST_EMPTY(list->rdata)) {
515 rdata = ISC_LIST_HEAD(list->rdata);
516 ISC_LIST_UNLINK(list->rdata, rdata, link);
517 isc_mem_put(mctx, rdata, sizeof(dns_rdata_t));
519 ISC_LIST_UNLINK(node->lists, list, link);
520 isc_mem_put(mctx, list, sizeof(dns_rdatalist_t));
523 while (!ISC_LIST_EMPTY(node->buffers)) {
524 b = ISC_LIST_HEAD(node->buffers);
525 ISC_LIST_UNLINK(node->buffers, b, link);
529 if (node->name != NULL) {
530 dns_name_free(node->name, mctx);
531 isc_mem_put(mctx, node->name, sizeof(dns_name_t));
533 DESTROYLOCK(&node->lock);
535 isc_mem_put(mctx, node, sizeof(dns_sdlznode_t));
541 findnode(dns_db_t *db, dns_name_t *name, isc_boolean_t create,
542 dns_dbnode_t **nodep)
544 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
545 dns_sdlznode_t *node = NULL;
548 char namestr[DNS_NAME_MAXTEXT + 1];
550 char zonestr[DNS_NAME_MAXTEXT + 1];
551 isc_boolean_t isorigin;
552 dns_sdlzauthorityfunc_t authority;
554 REQUIRE(VALID_SDLZDB(sdlz));
555 REQUIRE(nodep != NULL && *nodep == NULL);
557 if (sdlz->dlzimp->methods->newversion == NULL) {
558 REQUIRE(create == ISC_FALSE);
561 isc_buffer_init(&b, namestr, sizeof(namestr));
562 if ((sdlz->dlzimp->flags & DNS_SDLZFLAG_RELATIVEOWNER) != 0) {
566 labels = dns_name_countlabels(name) -
567 dns_name_countlabels(&db->origin);
568 dns_name_init(&relname, NULL);
569 dns_name_getlabelsequence(name, 0, labels, &relname);
570 result = dns_name_totext(&relname, ISC_TRUE, &b);
571 if (result != ISC_R_SUCCESS)
574 result = dns_name_totext(name, ISC_TRUE, &b);
575 if (result != ISC_R_SUCCESS)
578 isc_buffer_putuint8(&b, 0);
580 isc_buffer_init(&b2, zonestr, sizeof(zonestr));
581 result = dns_name_totext(&sdlz->common.origin, ISC_TRUE, &b2);
582 if (result != ISC_R_SUCCESS)
584 isc_buffer_putuint8(&b2, 0);
586 result = createnode(sdlz, &node);
587 if (result != ISC_R_SUCCESS)
590 isorigin = dns_name_equal(name, &sdlz->common.origin);
592 /* make sure strings are always lowercase */
593 dns_sdlz_tolower(zonestr);
594 dns_sdlz_tolower(namestr);
596 MAYBE_LOCK(sdlz->dlzimp);
598 /* try to lookup the host (namestr) */
599 result = sdlz->dlzimp->methods->lookup(zonestr, namestr,
600 sdlz->dlzimp->driverarg,
604 * if the host (namestr) was not found, try to lookup a
607 if (result != ISC_R_SUCCESS && !create) {
608 result = sdlz->dlzimp->methods->lookup(zonestr, "*",
609 sdlz->dlzimp->driverarg,
613 MAYBE_UNLOCK(sdlz->dlzimp);
615 if (result != ISC_R_SUCCESS && !isorigin && !create) {
620 if (isorigin && sdlz->dlzimp->methods->authority != NULL) {
621 MAYBE_LOCK(sdlz->dlzimp);
622 authority = sdlz->dlzimp->methods->authority;
623 result = (*authority)(zonestr, sdlz->dlzimp->driverarg,
625 MAYBE_UNLOCK(sdlz->dlzimp);
626 if (result != ISC_R_SUCCESS &&
627 result != ISC_R_NOTIMPLEMENTED) {
633 if (node->name == NULL) {
634 node->name = isc_mem_get(sdlz->common.mctx,
636 if (node->name == NULL) {
638 return (ISC_R_NOMEMORY);
640 dns_name_init(node->name, NULL);
641 result = dns_name_dup(name, sdlz->common.mctx, node->name);
642 if (result != ISC_R_SUCCESS) {
643 isc_mem_put(sdlz->common.mctx, node->name,
651 return (ISC_R_SUCCESS);
655 findzonecut(dns_db_t *db, dns_name_t *name, unsigned int options,
656 isc_stdtime_t now, dns_dbnode_t **nodep, dns_name_t *foundname,
657 dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset)
668 return (ISC_R_NOTIMPLEMENTED);
672 attachnode(dns_db_t *db, dns_dbnode_t *source, dns_dbnode_t **targetp) {
673 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
674 dns_sdlznode_t *node = (dns_sdlznode_t *)source;
676 REQUIRE(VALID_SDLZDB(sdlz));
681 INSIST(node->references > 0);
683 INSIST(node->references != 0); /* Catch overflow. */
690 detachnode(dns_db_t *db, dns_dbnode_t **targetp) {
691 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
692 dns_sdlznode_t *node;
693 isc_boolean_t need_destroy = ISC_FALSE;
695 REQUIRE(VALID_SDLZDB(sdlz));
696 REQUIRE(targetp != NULL && *targetp != NULL);
700 node = (dns_sdlznode_t *)(*targetp);
703 INSIST(node->references > 0);
705 if (node->references == 0)
706 need_destroy = ISC_TRUE;
716 expirenode(dns_db_t *db, dns_dbnode_t *node, isc_stdtime_t now) {
721 return (ISC_R_UNEXPECTED);
725 printnode(dns_db_t *db, dns_dbnode_t *node, FILE *out) {
733 createiterator(dns_db_t *db, unsigned int options, dns_dbiterator_t **iteratorp)
735 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
736 sdlz_dbiterator_t *sdlziter;
739 char zonestr[DNS_NAME_MAXTEXT + 1];
741 REQUIRE(VALID_SDLZDB(sdlz));
743 if (sdlz->dlzimp->methods->allnodes == NULL)
744 return (ISC_R_NOTIMPLEMENTED);
746 if ((options & DNS_DB_NSEC3ONLY) != 0 ||
747 (options & DNS_DB_NONSEC3) != 0)
748 return (ISC_R_NOTIMPLEMENTED);
750 isc_buffer_init(&b, zonestr, sizeof(zonestr));
751 result = dns_name_totext(&sdlz->common.origin, ISC_TRUE, &b);
752 if (result != ISC_R_SUCCESS)
754 isc_buffer_putuint8(&b, 0);
756 sdlziter = isc_mem_get(sdlz->common.mctx, sizeof(sdlz_dbiterator_t));
757 if (sdlziter == NULL)
758 return (ISC_R_NOMEMORY);
760 sdlziter->common.methods = &dbiterator_methods;
761 sdlziter->common.db = NULL;
762 dns_db_attach(db, &sdlziter->common.db);
763 sdlziter->common.relative_names = ISC_TF(options & DNS_DB_RELATIVENAMES);
764 sdlziter->common.magic = DNS_DBITERATOR_MAGIC;
765 ISC_LIST_INIT(sdlziter->nodelist);
766 sdlziter->current = NULL;
767 sdlziter->origin = NULL;
769 /* make sure strings are always lowercase */
770 dns_sdlz_tolower(zonestr);
772 MAYBE_LOCK(sdlz->dlzimp);
773 result = sdlz->dlzimp->methods->allnodes(zonestr,
774 sdlz->dlzimp->driverarg,
775 sdlz->dbdata, sdlziter);
776 MAYBE_UNLOCK(sdlz->dlzimp);
777 if (result != ISC_R_SUCCESS) {
778 dns_dbiterator_t *iter = &sdlziter->common;
779 dbiterator_destroy(&iter);
783 if (sdlziter->origin != NULL) {
784 ISC_LIST_UNLINK(sdlziter->nodelist, sdlziter->origin, link);
785 ISC_LIST_PREPEND(sdlziter->nodelist, sdlziter->origin, link);
788 *iteratorp = (dns_dbiterator_t *)sdlziter;
790 return (ISC_R_SUCCESS);
794 findrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
795 dns_rdatatype_t type, dns_rdatatype_t covers,
796 isc_stdtime_t now, dns_rdataset_t *rdataset,
797 dns_rdataset_t *sigrdataset)
799 dns_rdatalist_t *list;
800 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *)node;
802 REQUIRE(VALID_SDLZNODE(node));
810 if (type == dns_rdatatype_sig || type == dns_rdatatype_rrsig)
811 return (ISC_R_NOTIMPLEMENTED);
813 list = ISC_LIST_HEAD(sdlznode->lists);
814 while (list != NULL) {
815 if (list->type == type)
817 list = ISC_LIST_NEXT(list, link);
820 return (ISC_R_NOTFOUND);
822 list_tordataset(list, db, node, rdataset);
824 return (ISC_R_SUCCESS);
828 find(dns_db_t *db, dns_name_t *name, dns_dbversion_t *version,
829 dns_rdatatype_t type, unsigned int options, isc_stdtime_t now,
830 dns_dbnode_t **nodep, dns_name_t *foundname,
831 dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset)
833 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
834 dns_dbnode_t *node = NULL;
835 dns_fixedname_t fname;
836 dns_rdataset_t xrdataset;
838 unsigned int nlabels, olabels;
842 REQUIRE(VALID_SDLZDB(sdlz));
843 REQUIRE(nodep == NULL || *nodep == NULL);
844 REQUIRE(version == NULL || version == (void*)&sdlz->dummy_version);
849 if (!dns_name_issubdomain(name, &db->origin))
850 return (DNS_R_NXDOMAIN);
852 olabels = dns_name_countlabels(&db->origin);
853 nlabels = dns_name_countlabels(name);
855 dns_fixedname_init(&fname);
856 xname = dns_fixedname_name(&fname);
858 if (rdataset == NULL) {
859 dns_rdataset_init(&xrdataset);
860 rdataset = &xrdataset;
863 result = DNS_R_NXDOMAIN;
865 for (i = olabels; i <= nlabels; i++) {
867 * Look up the next label.
869 dns_name_getlabelsequence(name, nlabels - i, i, xname);
870 result = findnode(db, xname, ISC_FALSE, &node);
871 if (result != ISC_R_SUCCESS) {
872 result = DNS_R_NXDOMAIN;
877 * Look for a DNAME at the current label, unless this is
881 result = findrdataset(db, node, version,
883 0, now, rdataset, sigrdataset);
884 if (result == ISC_R_SUCCESS) {
885 result = DNS_R_DNAME;
891 * Look for an NS at the current label, unless this is the
892 * origin or glue is ok.
894 if (i != olabels && (options & DNS_DBFIND_GLUEOK) == 0) {
895 result = findrdataset(db, node, version,
897 0, now, rdataset, sigrdataset);
898 if (result == ISC_R_SUCCESS) {
899 if (i == nlabels && type == dns_rdatatype_any)
901 result = DNS_R_ZONECUT;
902 dns_rdataset_disassociate(rdataset);
903 if (sigrdataset != NULL &&
904 dns_rdataset_isassociated
906 dns_rdataset_disassociate
910 result = DNS_R_DELEGATION;
916 * If the current name is not the qname, add another label
926 * If we're looking for ANY, we're done.
928 if (type == dns_rdatatype_any) {
929 result = ISC_R_SUCCESS;
934 * Look for the qtype.
936 result = findrdataset(db, node, version, type,
937 0, now, rdataset, sigrdataset);
938 if (result == ISC_R_SUCCESS)
944 if (type != dns_rdatatype_cname) {
945 result = findrdataset(db, node, version,
947 0, now, rdataset, sigrdataset);
948 if (result == ISC_R_SUCCESS) {
949 result = DNS_R_CNAME;
954 result = DNS_R_NXRRSET;
958 if (rdataset == &xrdataset && dns_rdataset_isassociated(rdataset))
959 dns_rdataset_disassociate(rdataset);
961 if (foundname != NULL) {
962 isc_result_t xresult;
964 xresult = dns_name_copy(xname, foundname, NULL);
965 if (xresult != ISC_R_SUCCESS) {
968 if (dns_rdataset_isassociated(rdataset))
969 dns_rdataset_disassociate(rdataset);
970 return (DNS_R_BADDB);
976 else if (node != NULL)
977 detachnode(db, &node);
983 allrdatasets(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
984 isc_stdtime_t now, dns_rdatasetiter_t **iteratorp)
986 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *) db;
987 sdlz_rdatasetiter_t *iterator;
989 REQUIRE(VALID_SDLZDB(sdlz));
991 REQUIRE(version == NULL ||
992 version == (void*)&sdlz->dummy_version ||
993 version == sdlz->future_version);
998 iterator = isc_mem_get(db->mctx, sizeof(sdlz_rdatasetiter_t));
999 if (iterator == NULL)
1000 return (ISC_R_NOMEMORY);
1002 iterator->common.magic = DNS_RDATASETITER_MAGIC;
1003 iterator->common.methods = &rdatasetiter_methods;
1004 iterator->common.db = db;
1005 iterator->common.node = NULL;
1006 attachnode(db, node, &iterator->common.node);
1007 iterator->common.version = version;
1008 iterator->common.now = now;
1010 *iteratorp = (dns_rdatasetiter_t *)iterator;
1012 return (ISC_R_SUCCESS);
1016 modrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1017 dns_rdataset_t *rdataset, unsigned int options,
1018 dns_sdlzmodrdataset_t mod_function)
1020 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1021 dns_master_style_t *style = NULL;
1022 isc_result_t result;
1023 isc_buffer_t *buffer = NULL;
1025 dns_sdlznode_t *sdlznode;
1026 char *rdatastr = NULL;
1027 char name[DNS_NAME_MAXTEXT + 1];
1029 REQUIRE(VALID_SDLZDB(sdlz));
1031 if (mod_function == NULL)
1032 return (ISC_R_NOTIMPLEMENTED);
1034 sdlznode = (dns_sdlznode_t *)node;
1038 dns_name_format(sdlznode->name, name, sizeof(name));
1040 mctx = sdlz->common.mctx;
1042 result = isc_buffer_allocate(mctx, &buffer, 1024);
1043 if (result != ISC_R_SUCCESS)
1046 result = dns_master_stylecreate(&style, 0, 0, 0, 0, 0, 0, 1, mctx);
1047 if (result != ISC_R_SUCCESS)
1050 result = dns_master_rdatasettotext(sdlznode->name, rdataset,
1052 if (result != ISC_R_SUCCESS)
1055 if (isc_buffer_usedlength(buffer) < 1) {
1056 result = ISC_R_BADADDRESSFORM;
1060 rdatastr = isc_buffer_base(buffer);
1061 if (rdatastr == NULL) {
1062 result = ISC_R_NOMEMORY;
1065 rdatastr[isc_buffer_usedlength(buffer) - 1] = 0;
1067 MAYBE_LOCK(sdlz->dlzimp);
1068 result = mod_function(name, rdatastr, sdlz->dlzimp->driverarg,
1069 sdlz->dbdata, version);
1070 MAYBE_UNLOCK(sdlz->dlzimp);
1073 isc_buffer_free(&buffer);
1075 dns_master_styledestroy(&style, mctx);
1081 addrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1082 isc_stdtime_t now, dns_rdataset_t *rdataset, unsigned int options,
1083 dns_rdataset_t *addedrdataset)
1085 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1086 isc_result_t result;
1089 UNUSED(addedrdataset);
1090 REQUIRE(VALID_SDLZDB(sdlz));
1092 if (sdlz->dlzimp->methods->addrdataset == NULL)
1093 return (ISC_R_NOTIMPLEMENTED);
1095 result = modrdataset(db, node, version, rdataset, options,
1096 sdlz->dlzimp->methods->addrdataset);
1102 subtractrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1103 dns_rdataset_t *rdataset, unsigned int options,
1104 dns_rdataset_t *newrdataset)
1106 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1107 isc_result_t result;
1109 UNUSED(newrdataset);
1110 REQUIRE(VALID_SDLZDB(sdlz));
1112 if (sdlz->dlzimp->methods->subtractrdataset == NULL) {
1113 return (ISC_R_NOTIMPLEMENTED);
1116 result = modrdataset(db, node, version, rdataset, options,
1117 sdlz->dlzimp->methods->subtractrdataset);
1122 deleterdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1123 dns_rdatatype_t type, dns_rdatatype_t covers)
1125 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1126 char name[DNS_NAME_MAXTEXT + 1];
1127 char b_type[DNS_RDATATYPE_FORMATSIZE];
1128 dns_sdlznode_t *sdlznode;
1129 isc_result_t result;
1133 REQUIRE(VALID_SDLZDB(sdlz));
1135 if (sdlz->dlzimp->methods->delrdataset == NULL)
1136 return (ISC_R_NOTIMPLEMENTED);
1138 sdlznode = (dns_sdlznode_t *)node;
1139 dns_name_format(sdlznode->name, name, sizeof(name));
1140 dns_rdatatype_format(type, b_type, sizeof(b_type));
1142 MAYBE_LOCK(sdlz->dlzimp);
1143 result = sdlz->dlzimp->methods->delrdataset(name, b_type,
1144 sdlz->dlzimp->driverarg,
1145 sdlz->dbdata, version);
1146 MAYBE_UNLOCK(sdlz->dlzimp);
1151 static isc_boolean_t
1152 issecure(dns_db_t *db) {
1159 nodecount(dns_db_t *db) {
1165 static isc_boolean_t
1166 ispersistent(dns_db_t *db) {
1172 overmem(dns_db_t *db, isc_boolean_t overmem) {
1178 settask(dns_db_t *db, isc_task_t *task) {
1185 * getoriginnode() is used by the update code to find the
1186 * dns_rdatatype_dnskey record for a zone
1189 getoriginnode(dns_db_t *db, dns_dbnode_t **nodep) {
1190 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1191 isc_result_t result;
1193 REQUIRE(VALID_SDLZDB(sdlz));
1194 if (sdlz->dlzimp->methods->newversion == NULL)
1195 return (ISC_R_NOTIMPLEMENTED);
1197 result = findnode(db, &sdlz->common.origin, ISC_FALSE, nodep);
1198 if (result != ISC_R_SUCCESS)
1199 sdlz_log(ISC_LOG_ERROR, "sdlz getoriginnode failed : %s",
1200 isc_result_totext(result));
1204 static dns_dbmethods_t sdlzdb_methods = {
1246 * Database Iterator Methods. These methods were "borrowed" from the SDB
1247 * driver interface. See the SDB driver interface documentation for more info.
1251 dbiterator_destroy(dns_dbiterator_t **iteratorp) {
1252 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)(*iteratorp);
1253 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)sdlziter->common.db;
1255 while (!ISC_LIST_EMPTY(sdlziter->nodelist)) {
1256 dns_sdlznode_t *node;
1257 node = ISC_LIST_HEAD(sdlziter->nodelist);
1258 ISC_LIST_UNLINK(sdlziter->nodelist, node, link);
1262 dns_db_detach(&sdlziter->common.db);
1263 isc_mem_put(sdlz->common.mctx, sdlziter, sizeof(sdlz_dbiterator_t));
1269 dbiterator_first(dns_dbiterator_t *iterator) {
1270 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1272 sdlziter->current = ISC_LIST_HEAD(sdlziter->nodelist);
1273 if (sdlziter->current == NULL)
1274 return (ISC_R_NOMORE);
1276 return (ISC_R_SUCCESS);
1280 dbiterator_last(dns_dbiterator_t *iterator) {
1281 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1283 sdlziter->current = ISC_LIST_TAIL(sdlziter->nodelist);
1284 if (sdlziter->current == NULL)
1285 return (ISC_R_NOMORE);
1287 return (ISC_R_SUCCESS);
1291 dbiterator_seek(dns_dbiterator_t *iterator, dns_name_t *name) {
1292 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1294 sdlziter->current = ISC_LIST_HEAD(sdlziter->nodelist);
1295 while (sdlziter->current != NULL) {
1296 if (dns_name_equal(sdlziter->current->name, name))
1297 return (ISC_R_SUCCESS);
1298 sdlziter->current = ISC_LIST_NEXT(sdlziter->current, link);
1300 return (ISC_R_NOTFOUND);
1304 dbiterator_prev(dns_dbiterator_t *iterator) {
1305 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1307 sdlziter->current = ISC_LIST_PREV(sdlziter->current, link);
1308 if (sdlziter->current == NULL)
1309 return (ISC_R_NOMORE);
1311 return (ISC_R_SUCCESS);
1315 dbiterator_next(dns_dbiterator_t *iterator) {
1316 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1318 sdlziter->current = ISC_LIST_NEXT(sdlziter->current, link);
1319 if (sdlziter->current == NULL)
1320 return (ISC_R_NOMORE);
1322 return (ISC_R_SUCCESS);
1326 dbiterator_current(dns_dbiterator_t *iterator, dns_dbnode_t **nodep,
1329 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1331 attachnode(iterator->db, sdlziter->current, nodep);
1333 return (dns_name_copy(sdlziter->current->name, name, NULL));
1334 return (ISC_R_SUCCESS);
1338 dbiterator_pause(dns_dbiterator_t *iterator) {
1340 return (ISC_R_SUCCESS);
1344 dbiterator_origin(dns_dbiterator_t *iterator, dns_name_t *name) {
1346 return (dns_name_copy(dns_rootname, name, NULL));
1350 * Rdataset Methods. These methods were "borrowed" from the SDB driver
1351 * interface. See the SDB driver interface documentation for more info.
1355 disassociate(dns_rdataset_t *rdataset) {
1356 dns_dbnode_t *node = rdataset->private5;
1357 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *) node;
1358 dns_db_t *db = (dns_db_t *) sdlznode->sdlz;
1360 detachnode(db, &node);
1361 isc__rdatalist_disassociate(rdataset);
1365 rdataset_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
1366 dns_dbnode_t *node = source->private5;
1367 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *) node;
1368 dns_db_t *db = (dns_db_t *) sdlznode->sdlz;
1369 dns_dbnode_t *tempdb = NULL;
1371 isc__rdatalist_clone(source, target);
1372 attachnode(db, node, &tempdb);
1373 source->private5 = tempdb;
1376 static dns_rdatasetmethods_t rdataset_methods = {
1378 isc__rdatalist_first,
1379 isc__rdatalist_next,
1380 isc__rdatalist_current,
1382 isc__rdatalist_count,
1383 isc__rdatalist_addnoqname,
1384 isc__rdatalist_getnoqname,
1395 list_tordataset(dns_rdatalist_t *rdatalist,
1396 dns_db_t *db, dns_dbnode_t *node,
1397 dns_rdataset_t *rdataset)
1400 * The sdlz rdataset is an rdatalist with some additions.
1401 * - private1 & private2 are used by the rdatalist.
1402 * - private3 & private 4 are unused.
1403 * - private5 is the node.
1406 /* This should never fail. */
1407 RUNTIME_CHECK(dns_rdatalist_tordataset(rdatalist, rdataset) ==
1410 rdataset->methods = &rdataset_methods;
1411 dns_db_attachnode(db, node, &rdataset->private5);
1415 * SDLZ core methods. This is the core of the new DLZ functionality.
1419 * Build a 'bind' database driver structure to be returned by
1420 * either the find zone or the allow zone transfer method.
1421 * This method is only available in this source file, it is
1422 * not made available anywhere else.
1426 dns_sdlzcreateDBP(isc_mem_t *mctx, void *driverarg, void *dbdata,
1427 dns_name_t *name, dns_rdataclass_t rdclass, dns_db_t **dbp)
1429 isc_result_t result;
1430 dns_sdlz_db_t *sdlzdb;
1431 dns_sdlzimplementation_t *imp;
1433 /* check that things are as we expect */
1434 REQUIRE(dbp != NULL && *dbp == NULL);
1435 REQUIRE(name != NULL);
1437 imp = (dns_sdlzimplementation_t *) driverarg;
1439 /* allocate and zero memory for driver structure */
1440 sdlzdb = isc_mem_get(mctx, sizeof(dns_sdlz_db_t));
1442 return (ISC_R_NOMEMORY);
1443 memset(sdlzdb, 0, sizeof(dns_sdlz_db_t));
1445 /* initialize and set origin */
1446 dns_name_init(&sdlzdb->common.origin, NULL);
1447 result = dns_name_dupwithoffsets(name, mctx, &sdlzdb->common.origin);
1448 if (result != ISC_R_SUCCESS)
1451 /* initialize the reference count mutex */
1452 result = isc_mutex_init(&sdlzdb->refcnt_lock);
1453 if (result != ISC_R_SUCCESS)
1456 /* set the rest of the database structure attributes */
1457 sdlzdb->dlzimp = imp;
1458 sdlzdb->common.methods = &sdlzdb_methods;
1459 sdlzdb->common.attributes = 0;
1460 sdlzdb->common.rdclass = rdclass;
1461 sdlzdb->common.mctx = NULL;
1462 sdlzdb->dbdata = dbdata;
1463 sdlzdb->references = 1;
1465 /* attach to the memory context */
1466 isc_mem_attach(mctx, &sdlzdb->common.mctx);
1468 /* mark structure as valid */
1469 sdlzdb->common.magic = DNS_DB_MAGIC;
1470 sdlzdb->common.impmagic = SDLZDB_MAGIC;
1471 *dbp = (dns_db_t *) sdlzdb;
1476 * reference count mutex could not be initialized, clean up
1480 dns_name_free(&sdlzdb->common.origin, mctx);
1482 isc_mem_put(mctx, sdlzdb, sizeof(dns_sdlz_db_t));
1487 dns_sdlzallowzonexfr(void *driverarg, void *dbdata, isc_mem_t *mctx,
1488 dns_rdataclass_t rdclass, dns_name_t *name,
1489 isc_sockaddr_t *clientaddr, dns_db_t **dbp)
1493 char namestr[DNS_NAME_MAXTEXT + 1];
1494 char clientstr[(sizeof "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255")
1496 isc_netaddr_t netaddr;
1497 isc_result_t result;
1498 dns_sdlzimplementation_t *imp;
1501 * Perform checks to make sure data is as we expect it to be.
1503 REQUIRE(driverarg != NULL);
1504 REQUIRE(name != NULL);
1505 REQUIRE(clientaddr != NULL);
1506 REQUIRE(dbp != NULL && *dbp == NULL);
1508 imp = (dns_sdlzimplementation_t *) driverarg;
1510 /* Convert DNS name to ascii text */
1511 isc_buffer_init(&b, namestr, sizeof(namestr));
1512 result = dns_name_totext(name, ISC_TRUE, &b);
1513 if (result != ISC_R_SUCCESS)
1515 isc_buffer_putuint8(&b, 0);
1517 /* convert client address to ascii text */
1518 isc_buffer_init(&b2, clientstr, sizeof(clientstr));
1519 isc_netaddr_fromsockaddr(&netaddr, clientaddr);
1520 result = isc_netaddr_totext(&netaddr, &b2);
1521 if (result != ISC_R_SUCCESS)
1523 isc_buffer_putuint8(&b2, 0);
1525 /* make sure strings are always lowercase */
1526 dns_sdlz_tolower(namestr);
1527 dns_sdlz_tolower(clientstr);
1529 /* Call SDLZ driver's find zone method */
1530 if (imp->methods->allowzonexfr != NULL) {
1532 result = imp->methods->allowzonexfr(imp->driverarg, dbdata,
1533 namestr, clientstr);
1536 * if zone is supported and transfers allowed build a 'bind'
1539 if (result == ISC_R_SUCCESS)
1540 result = dns_sdlzcreateDBP(mctx, driverarg, dbdata,
1541 name, rdclass, dbp);
1545 return (ISC_R_NOTIMPLEMENTED);
1549 dns_sdlzcreate(isc_mem_t *mctx, const char *dlzname, unsigned int argc,
1550 char *argv[], void *driverarg, void **dbdata)
1552 dns_sdlzimplementation_t *imp;
1553 isc_result_t result = ISC_R_NOTFOUND;
1555 /* Write debugging message to log */
1556 sdlz_log(ISC_LOG_DEBUG(2), "Loading SDLZ driver.");
1559 * Performs checks to make sure data is as we expect it to be.
1561 REQUIRE(driverarg != NULL);
1562 REQUIRE(dlzname != NULL);
1563 REQUIRE(dbdata != NULL);
1568 /* If the create method exists, call it. */
1569 if (imp->methods->create != NULL) {
1571 result = imp->methods->create(dlzname, argc, argv,
1572 imp->driverarg, dbdata);
1576 /* Write debugging message to log */
1577 if (result == ISC_R_SUCCESS) {
1578 sdlz_log(ISC_LOG_DEBUG(2), "SDLZ driver loaded successfully.");
1580 sdlz_log(ISC_LOG_ERROR, "SDLZ driver failed to load.");
1587 dns_sdlzdestroy(void *driverdata, void **dbdata)
1590 dns_sdlzimplementation_t *imp;
1592 /* Write debugging message to log */
1593 sdlz_log(ISC_LOG_DEBUG(2), "Unloading SDLZ driver.");
1597 /* If the destroy method exists, call it. */
1598 if (imp->methods->destroy != NULL) {
1600 imp->methods->destroy(imp->driverarg, dbdata);
1606 dns_sdlzfindzone(void *driverarg, void *dbdata, isc_mem_t *mctx,
1607 dns_rdataclass_t rdclass, dns_name_t *name, dns_db_t **dbp)
1610 char namestr[DNS_NAME_MAXTEXT + 1];
1611 isc_result_t result;
1612 dns_sdlzimplementation_t *imp;
1615 * Perform checks to make sure data is as we expect it to be.
1617 REQUIRE(driverarg != NULL);
1618 REQUIRE(name != NULL);
1619 REQUIRE(dbp != NULL && *dbp == NULL);
1621 imp = (dns_sdlzimplementation_t *) driverarg;
1623 /* Convert DNS name to ascii text */
1624 isc_buffer_init(&b, namestr, sizeof(namestr));
1625 result = dns_name_totext(name, ISC_TRUE, &b);
1626 if (result != ISC_R_SUCCESS)
1628 isc_buffer_putuint8(&b, 0);
1630 /* make sure strings are always lowercase */
1631 dns_sdlz_tolower(namestr);
1633 /* Call SDLZ driver's find zone method */
1635 result = imp->methods->findzone(imp->driverarg, dbdata, namestr);
1639 * if zone is supported build a 'bind' database driver
1640 * structure to return
1642 if (result == ISC_R_SUCCESS)
1643 result = dns_sdlzcreateDBP(mctx, driverarg, dbdata, name,
1651 dns_sdlzconfigure(void *driverarg, void *dbdata, dns_view_t *view)
1653 isc_result_t result;
1654 dns_sdlzimplementation_t *imp;
1656 REQUIRE(driverarg != NULL);
1658 imp = (dns_sdlzimplementation_t *) driverarg;
1660 /* Call SDLZ driver's configure method */
1661 if (imp->methods->configure != NULL) {
1663 result = imp->methods->configure(view, imp->driverarg, dbdata);
1666 result = ISC_R_SUCCESS;
1672 static isc_boolean_t
1673 dns_sdlzssumatch(dns_name_t *signer, dns_name_t *name, isc_netaddr_t *tcpaddr,
1674 dns_rdatatype_t type, const dst_key_t *key, void *driverarg,
1677 dns_sdlzimplementation_t *imp;
1678 char b_signer[DNS_NAME_FORMATSIZE];
1679 char b_name[DNS_NAME_FORMATSIZE];
1680 char b_addr[ISC_NETADDR_FORMATSIZE];
1681 char b_type[DNS_RDATATYPE_FORMATSIZE];
1682 char b_key[DST_KEY_FORMATSIZE];
1683 isc_buffer_t *tkey_token = NULL;
1684 isc_region_t token_region;
1685 isc_uint32_t token_len = 0;
1688 REQUIRE(driverarg != NULL);
1690 imp = (dns_sdlzimplementation_t *) driverarg;
1691 if (imp->methods->ssumatch == NULL)
1695 * Format the request elements. sdlz operates on strings, not
1699 dns_name_format(signer, b_signer, sizeof(b_signer));
1703 dns_name_format(name, b_name, sizeof(b_name));
1705 if (tcpaddr != NULL)
1706 isc_netaddr_format(tcpaddr, b_addr, sizeof(b_addr));
1710 dns_rdatatype_format(type, b_type, sizeof(b_type));
1713 dst_key_format(key, b_key, sizeof(b_key));
1714 tkey_token = dst_key_tkeytoken(key);
1718 if (tkey_token != NULL) {
1719 isc_buffer_region(tkey_token, &token_region);
1720 token_len = token_region.length;
1724 ret = imp->methods->ssumatch(b_signer, b_name, b_addr, b_type, b_key,
1726 token_len != 0 ? token_region.base : NULL,
1727 imp->driverarg, dbdata);
1732 static dns_dlzmethods_t sdlzmethods = {
1736 dns_sdlzallowzonexfr,
1746 dns_sdlz_putrr(dns_sdlzlookup_t *lookup, const char *type, dns_ttl_t ttl,
1749 dns_rdatalist_t *rdatalist;
1751 dns_rdatatype_t typeval;
1752 isc_consttextregion_t r;
1754 isc_buffer_t *rdatabuf = NULL;
1756 isc_result_t result;
1761 REQUIRE(VALID_SDLZLOOKUP(lookup));
1762 REQUIRE(type != NULL);
1763 REQUIRE(data != NULL);
1765 mctx = lookup->sdlz->common.mctx;
1768 r.length = strlen(type);
1769 result = dns_rdatatype_fromtext(&typeval, (void *) &r);
1770 if (result != ISC_R_SUCCESS)
1773 rdatalist = ISC_LIST_HEAD(lookup->lists);
1774 while (rdatalist != NULL) {
1775 if (rdatalist->type == typeval)
1777 rdatalist = ISC_LIST_NEXT(rdatalist, link);
1780 if (rdatalist == NULL) {
1781 rdatalist = isc_mem_get(mctx, sizeof(dns_rdatalist_t));
1782 if (rdatalist == NULL)
1783 return (ISC_R_NOMEMORY);
1784 rdatalist->rdclass = lookup->sdlz->common.rdclass;
1785 rdatalist->type = typeval;
1786 rdatalist->covers = 0;
1787 rdatalist->ttl = ttl;
1788 ISC_LIST_INIT(rdatalist->rdata);
1789 ISC_LINK_INIT(rdatalist, link);
1790 ISC_LIST_APPEND(lookup->lists, rdatalist, link);
1792 if (rdatalist->ttl > ttl) {
1794 * BIND9 doesn't enforce all RRs in an RRset
1795 * having the same TTL, as per RFC 2136,
1796 * section 7.12. If a DLZ backend has
1797 * different TTLs, then the best
1798 * we can do is return the lowest.
1800 rdatalist->ttl = ttl;
1803 rdata = isc_mem_get(mctx, sizeof(dns_rdata_t));
1805 return (ISC_R_NOMEMORY);
1806 dns_rdata_init(rdata);
1808 if ((lookup->sdlz->dlzimp->flags & DNS_SDLZFLAG_RELATIVERDATA) != 0)
1809 origin = &lookup->sdlz->common.origin;
1811 origin = dns_rootname;
1814 result = isc_lex_create(mctx, 64, &lex);
1815 if (result != ISC_R_SUCCESS)
1818 size = initial_size(data);
1820 isc_buffer_init(&b, data, strlen(data));
1821 isc_buffer_add(&b, strlen(data));
1823 result = isc_lex_openbuffer(lex, &b);
1824 if (result != ISC_R_SUCCESS)
1828 result = isc_buffer_allocate(mctx, &rdatabuf, size);
1829 if (result != ISC_R_SUCCESS)
1832 result = dns_rdata_fromtext(rdata, rdatalist->rdclass,
1833 rdatalist->type, lex,
1836 &lookup->callbacks);
1837 if (result != ISC_R_SUCCESS)
1838 isc_buffer_free(&rdatabuf);
1844 } while (result == ISC_R_NOSPACE);
1846 if (result != ISC_R_SUCCESS)
1849 ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
1850 ISC_LIST_APPEND(lookup->buffers, rdatabuf, link);
1853 isc_lex_destroy(&lex);
1855 return (ISC_R_SUCCESS);
1858 if (rdatabuf != NULL)
1859 isc_buffer_free(&rdatabuf);
1861 isc_lex_destroy(&lex);
1862 isc_mem_put(mctx, rdata, sizeof(dns_rdata_t));
1868 dns_sdlz_putnamedrr(dns_sdlzallnodes_t *allnodes, const char *name,
1869 const char *type, dns_ttl_t ttl, const char *data)
1871 dns_name_t *newname, *origin;
1872 dns_fixedname_t fnewname;
1873 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)allnodes->common.db;
1874 dns_sdlznode_t *sdlznode;
1875 isc_mem_t *mctx = sdlz->common.mctx;
1877 isc_result_t result;
1879 dns_fixedname_init(&fnewname);
1880 newname = dns_fixedname_name(&fnewname);
1882 if ((sdlz->dlzimp->flags & DNS_SDLZFLAG_RELATIVERDATA) != 0)
1883 origin = &sdlz->common.origin;
1885 origin = dns_rootname;
1886 isc_buffer_init(&b, name, strlen(name));
1887 isc_buffer_add(&b, strlen(name));
1889 result = dns_name_fromtext(newname, &b, origin, 0, NULL);
1890 if (result != ISC_R_SUCCESS)
1893 if (allnodes->common.relative_names) {
1894 /* All names are relative to the root */
1895 unsigned int nlabels = dns_name_countlabels(newname);
1896 dns_name_getlabelsequence(newname, 0, nlabels - 1, newname);
1899 sdlznode = ISC_LIST_HEAD(allnodes->nodelist);
1900 if (sdlznode == NULL || !dns_name_equal(sdlznode->name, newname)) {
1902 result = createnode(sdlz, &sdlznode);
1903 if (result != ISC_R_SUCCESS)
1905 sdlznode->name = isc_mem_get(mctx, sizeof(dns_name_t));
1906 if (sdlznode->name == NULL) {
1907 destroynode(sdlznode);
1908 return (ISC_R_NOMEMORY);
1910 dns_name_init(sdlznode->name, NULL);
1911 result = dns_name_dup(newname, mctx, sdlznode->name);
1912 if (result != ISC_R_SUCCESS) {
1913 isc_mem_put(mctx, sdlznode->name, sizeof(dns_name_t));
1914 destroynode(sdlznode);
1917 ISC_LIST_PREPEND(allnodes->nodelist, sdlznode, link);
1918 if (allnodes->origin == NULL &&
1919 dns_name_equal(newname, &sdlz->common.origin))
1920 allnodes->origin = sdlznode;
1922 return (dns_sdlz_putrr(sdlznode, type, ttl, data));
1927 dns_sdlz_putsoa(dns_sdlzlookup_t *lookup, const char *mname, const char *rname,
1928 isc_uint32_t serial)
1930 char str[2 * DNS_NAME_MAXTEXT + 5 * (sizeof("2147483647")) + 7];
1933 REQUIRE(mname != NULL);
1934 REQUIRE(rname != NULL);
1936 n = snprintf(str, sizeof str, "%s %s %u %u %u %u %u",
1937 mname, rname, serial,
1938 SDLZ_DEFAULT_REFRESH, SDLZ_DEFAULT_RETRY,
1939 SDLZ_DEFAULT_EXPIRE, SDLZ_DEFAULT_MINIMUM);
1940 if (n >= (int)sizeof(str) || n < 0)
1941 return (ISC_R_NOSPACE);
1942 return (dns_sdlz_putrr(lookup, "SOA", SDLZ_DEFAULT_TTL, str));
1946 dns_sdlzregister(const char *drivername, const dns_sdlzmethods_t *methods,
1947 void *driverarg, unsigned int flags, isc_mem_t *mctx,
1948 dns_sdlzimplementation_t **sdlzimp)
1951 dns_sdlzimplementation_t *imp;
1952 isc_result_t result;
1955 * Performs checks to make sure data is as we expect it to be.
1957 REQUIRE(drivername != NULL);
1958 REQUIRE(methods != NULL);
1959 REQUIRE(methods->findzone != NULL);
1960 REQUIRE(methods->lookup != NULL);
1961 REQUIRE(mctx != NULL);
1962 REQUIRE(sdlzimp != NULL && *sdlzimp == NULL);
1963 REQUIRE((flags & ~(DNS_SDLZFLAG_RELATIVEOWNER |
1964 DNS_SDLZFLAG_RELATIVERDATA |
1965 DNS_SDLZFLAG_THREADSAFE)) == 0);
1967 /* Write debugging message to log */
1968 sdlz_log(ISC_LOG_DEBUG(2), "Registering SDLZ driver '%s'", drivername);
1971 * Allocate memory for a sdlz_implementation object. Error if
1974 imp = isc_mem_get(mctx, sizeof(dns_sdlzimplementation_t));
1976 return (ISC_R_NOMEMORY);
1978 /* Make sure memory region is set to all 0's */
1979 memset(imp, 0, sizeof(dns_sdlzimplementation_t));
1981 /* Store the data passed into this method */
1982 imp->methods = methods;
1983 imp->driverarg = driverarg;
1987 /* attach the new sdlz_implementation object to a memory context */
1988 isc_mem_attach(mctx, &imp->mctx);
1991 * initialize the driver lock, error if we cannot
1992 * (used if a driver does not support multiple threads)
1994 result = isc_mutex_init(&imp->driverlock);
1995 if (result != ISC_R_SUCCESS) {
1996 UNEXPECTED_ERROR(__FILE__, __LINE__,
1997 "isc_mutex_init() failed: %s",
1998 isc_result_totext(result));
2002 imp->dlz_imp = NULL;
2005 * register the DLZ driver. Pass in our "extra" sdlz information as
2006 * a driverarg. (that's why we stored the passed in driver arg in our
2007 * sdlz_implementation structure) Also, store the dlz_implementation
2008 * structure in our sdlz_implementation.
2010 result = dns_dlzregister(drivername, &sdlzmethods, imp, mctx,
2013 /* if registration fails, cleanup and get outta here. */
2014 if (result != ISC_R_SUCCESS)
2019 return (ISC_R_SUCCESS);
2022 /* destroy the driver lock, we don't need it anymore */
2023 DESTROYLOCK(&imp->driverlock);
2027 * return the memory back to the available memory pool and
2028 * remove it from the memory context.
2030 isc_mem_put(mctx, imp, sizeof(dns_sdlzimplementation_t));
2031 isc_mem_detach(&mctx);
2036 dns_sdlzunregister(dns_sdlzimplementation_t **sdlzimp) {
2037 dns_sdlzimplementation_t *imp;
2040 /* Write debugging message to log */
2041 sdlz_log(ISC_LOG_DEBUG(2), "Unregistering SDLZ driver.");
2044 * Performs checks to make sure data is as we expect it to be.
2046 REQUIRE(sdlzimp != NULL && *sdlzimp != NULL);
2050 /* Unregister the DLZ driver implementation */
2051 dns_dlzunregister(&imp->dlz_imp);
2053 /* destroy the driver lock, we don't need it anymore */
2054 DESTROYLOCK(&imp->driverlock);
2059 * return the memory back to the available memory pool and
2060 * remove it from the memory context.
2062 isc_mem_put(mctx, imp, sizeof(dns_sdlzimplementation_t));
2063 isc_mem_detach(&mctx);
2070 dns_sdlz_setdb(dns_dlzdb_t *dlzdatabase, dns_rdataclass_t rdclass,
2071 dns_name_t *name, dns_db_t **dbp)
2073 isc_result_t result;
2075 result = dns_sdlzcreateDBP(dlzdatabase->mctx,
2076 dlzdatabase->implementation->driverarg,
2077 dlzdatabase->dbdata, name, rdclass, dbp);