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 findnodeext(dns_db_t *db, dns_name_t *name, isc_boolean_t create,
542 dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo,
543 dns_dbnode_t **nodep)
545 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
546 dns_sdlznode_t *node = NULL;
549 char namestr[DNS_NAME_MAXTEXT + 1];
551 char zonestr[DNS_NAME_MAXTEXT + 1];
552 isc_boolean_t isorigin;
553 dns_sdlzauthorityfunc_t authority;
555 REQUIRE(VALID_SDLZDB(sdlz));
556 REQUIRE(nodep != NULL && *nodep == NULL);
558 if (sdlz->dlzimp->methods->newversion == NULL) {
559 REQUIRE(create == ISC_FALSE);
562 isc_buffer_init(&b, namestr, sizeof(namestr));
563 if ((sdlz->dlzimp->flags & DNS_SDLZFLAG_RELATIVEOWNER) != 0) {
567 labels = dns_name_countlabels(name) -
568 dns_name_countlabels(&db->origin);
569 dns_name_init(&relname, NULL);
570 dns_name_getlabelsequence(name, 0, labels, &relname);
571 result = dns_name_totext(&relname, ISC_TRUE, &b);
572 if (result != ISC_R_SUCCESS)
575 result = dns_name_totext(name, ISC_TRUE, &b);
576 if (result != ISC_R_SUCCESS)
579 isc_buffer_putuint8(&b, 0);
581 isc_buffer_init(&b2, zonestr, sizeof(zonestr));
582 result = dns_name_totext(&sdlz->common.origin, ISC_TRUE, &b2);
583 if (result != ISC_R_SUCCESS)
585 isc_buffer_putuint8(&b2, 0);
587 result = createnode(sdlz, &node);
588 if (result != ISC_R_SUCCESS)
591 isorigin = dns_name_equal(name, &sdlz->common.origin);
593 /* make sure strings are always lowercase */
594 dns_sdlz_tolower(zonestr);
595 dns_sdlz_tolower(namestr);
597 MAYBE_LOCK(sdlz->dlzimp);
599 /* try to lookup the host (namestr) */
600 result = sdlz->dlzimp->methods->lookup(zonestr, namestr,
601 sdlz->dlzimp->driverarg,
603 methods, clientinfo);
606 * if the host (namestr) was not found, try to lookup a
609 if (result != ISC_R_SUCCESS && !create)
610 result = sdlz->dlzimp->methods->lookup(zonestr, "*",
611 sdlz->dlzimp->driverarg,
613 methods, clientinfo);
615 MAYBE_UNLOCK(sdlz->dlzimp);
617 if (result != ISC_R_SUCCESS && !isorigin && !create) {
622 if (isorigin && sdlz->dlzimp->methods->authority != NULL) {
623 MAYBE_LOCK(sdlz->dlzimp);
624 authority = sdlz->dlzimp->methods->authority;
625 result = (*authority)(zonestr, sdlz->dlzimp->driverarg,
627 MAYBE_UNLOCK(sdlz->dlzimp);
628 if (result != ISC_R_SUCCESS &&
629 result != ISC_R_NOTIMPLEMENTED) {
635 if (node->name == NULL) {
636 node->name = isc_mem_get(sdlz->common.mctx,
638 if (node->name == NULL) {
640 return (ISC_R_NOMEMORY);
642 dns_name_init(node->name, NULL);
643 result = dns_name_dup(name, sdlz->common.mctx, node->name);
644 if (result != ISC_R_SUCCESS) {
645 isc_mem_put(sdlz->common.mctx, node->name,
653 return (ISC_R_SUCCESS);
657 findnode(dns_db_t *db, dns_name_t *name, isc_boolean_t create,
658 dns_dbnode_t **nodep)
660 return (findnodeext(db, name, create, NULL, NULL, nodep));
664 findzonecut(dns_db_t *db, dns_name_t *name, unsigned int options,
665 isc_stdtime_t now, dns_dbnode_t **nodep, dns_name_t *foundname,
666 dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset)
677 return (ISC_R_NOTIMPLEMENTED);
681 attachnode(dns_db_t *db, dns_dbnode_t *source, dns_dbnode_t **targetp) {
682 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
683 dns_sdlznode_t *node = (dns_sdlznode_t *)source;
685 REQUIRE(VALID_SDLZDB(sdlz));
690 INSIST(node->references > 0);
692 INSIST(node->references != 0); /* Catch overflow. */
699 detachnode(dns_db_t *db, dns_dbnode_t **targetp) {
700 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
701 dns_sdlznode_t *node;
702 isc_boolean_t need_destroy = ISC_FALSE;
704 REQUIRE(VALID_SDLZDB(sdlz));
705 REQUIRE(targetp != NULL && *targetp != NULL);
709 node = (dns_sdlznode_t *)(*targetp);
712 INSIST(node->references > 0);
714 if (node->references == 0)
715 need_destroy = ISC_TRUE;
725 expirenode(dns_db_t *db, dns_dbnode_t *node, isc_stdtime_t now) {
730 return (ISC_R_UNEXPECTED);
734 printnode(dns_db_t *db, dns_dbnode_t *node, FILE *out) {
742 createiterator(dns_db_t *db, unsigned int options, dns_dbiterator_t **iteratorp)
744 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
745 sdlz_dbiterator_t *sdlziter;
748 char zonestr[DNS_NAME_MAXTEXT + 1];
750 REQUIRE(VALID_SDLZDB(sdlz));
752 if (sdlz->dlzimp->methods->allnodes == NULL)
753 return (ISC_R_NOTIMPLEMENTED);
755 if ((options & DNS_DB_NSEC3ONLY) != 0 ||
756 (options & DNS_DB_NONSEC3) != 0)
757 return (ISC_R_NOTIMPLEMENTED);
759 isc_buffer_init(&b, zonestr, sizeof(zonestr));
760 result = dns_name_totext(&sdlz->common.origin, ISC_TRUE, &b);
761 if (result != ISC_R_SUCCESS)
763 isc_buffer_putuint8(&b, 0);
765 sdlziter = isc_mem_get(sdlz->common.mctx, sizeof(sdlz_dbiterator_t));
766 if (sdlziter == NULL)
767 return (ISC_R_NOMEMORY);
769 sdlziter->common.methods = &dbiterator_methods;
770 sdlziter->common.db = NULL;
771 dns_db_attach(db, &sdlziter->common.db);
772 sdlziter->common.relative_names = ISC_TF(options & DNS_DB_RELATIVENAMES);
773 sdlziter->common.magic = DNS_DBITERATOR_MAGIC;
774 ISC_LIST_INIT(sdlziter->nodelist);
775 sdlziter->current = NULL;
776 sdlziter->origin = NULL;
778 /* make sure strings are always lowercase */
779 dns_sdlz_tolower(zonestr);
781 MAYBE_LOCK(sdlz->dlzimp);
782 result = sdlz->dlzimp->methods->allnodes(zonestr,
783 sdlz->dlzimp->driverarg,
784 sdlz->dbdata, sdlziter);
785 MAYBE_UNLOCK(sdlz->dlzimp);
786 if (result != ISC_R_SUCCESS) {
787 dns_dbiterator_t *iter = &sdlziter->common;
788 dbiterator_destroy(&iter);
792 if (sdlziter->origin != NULL) {
793 ISC_LIST_UNLINK(sdlziter->nodelist, sdlziter->origin, link);
794 ISC_LIST_PREPEND(sdlziter->nodelist, sdlziter->origin, link);
797 *iteratorp = (dns_dbiterator_t *)sdlziter;
799 return (ISC_R_SUCCESS);
803 findrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
804 dns_rdatatype_t type, dns_rdatatype_t covers,
805 isc_stdtime_t now, dns_rdataset_t *rdataset,
806 dns_rdataset_t *sigrdataset)
808 dns_rdatalist_t *list;
809 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *)node;
811 REQUIRE(VALID_SDLZNODE(node));
819 if (type == dns_rdatatype_sig || type == dns_rdatatype_rrsig)
820 return (ISC_R_NOTIMPLEMENTED);
822 list = ISC_LIST_HEAD(sdlznode->lists);
823 while (list != NULL) {
824 if (list->type == type)
826 list = ISC_LIST_NEXT(list, link);
829 return (ISC_R_NOTFOUND);
831 list_tordataset(list, db, node, rdataset);
833 return (ISC_R_SUCCESS);
837 findext(dns_db_t *db, dns_name_t *name, dns_dbversion_t *version,
838 dns_rdatatype_t type, unsigned int options, isc_stdtime_t now,
839 dns_dbnode_t **nodep, dns_name_t *foundname,
840 dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo,
841 dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset)
843 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
844 dns_dbnode_t *node = NULL;
845 dns_fixedname_t fname;
846 dns_rdataset_t xrdataset;
848 unsigned int nlabels, olabels;
852 REQUIRE(VALID_SDLZDB(sdlz));
853 REQUIRE(nodep == NULL || *nodep == NULL);
854 REQUIRE(version == NULL || version == (void*)&sdlz->dummy_version);
859 if (!dns_name_issubdomain(name, &db->origin))
860 return (DNS_R_NXDOMAIN);
862 olabels = dns_name_countlabels(&db->origin);
863 nlabels = dns_name_countlabels(name);
865 dns_fixedname_init(&fname);
866 xname = dns_fixedname_name(&fname);
868 if (rdataset == NULL) {
869 dns_rdataset_init(&xrdataset);
870 rdataset = &xrdataset;
873 result = DNS_R_NXDOMAIN;
875 for (i = olabels; i <= nlabels; i++) {
877 * Look up the next label.
879 dns_name_getlabelsequence(name, nlabels - i, i, xname);
880 result = findnodeext(db, xname, ISC_FALSE,
881 methods, clientinfo, &node);
882 if (result != ISC_R_SUCCESS) {
883 result = DNS_R_NXDOMAIN;
888 * Look for a DNAME at the current label, unless this is
892 result = findrdataset(db, node, version,
893 dns_rdatatype_dname, 0, now,
894 rdataset, sigrdataset);
895 if (result == ISC_R_SUCCESS) {
896 result = DNS_R_DNAME;
902 * Look for an NS at the current label, unless this is the
903 * origin or glue is ok.
905 if (i != olabels && (options & DNS_DBFIND_GLUEOK) == 0) {
906 result = findrdataset(db, node, version,
907 dns_rdatatype_ns, 0, now,
908 rdataset, sigrdataset);
909 if (result == ISC_R_SUCCESS) {
910 if (i == nlabels && type == dns_rdatatype_any)
912 result = DNS_R_ZONECUT;
913 dns_rdataset_disassociate(rdataset);
914 if (sigrdataset != NULL &&
915 dns_rdataset_isassociated
917 dns_rdataset_disassociate
921 result = DNS_R_DELEGATION;
927 * If the current name is not the qname, add another label
937 * If we're looking for ANY, we're done.
939 if (type == dns_rdatatype_any) {
940 result = ISC_R_SUCCESS;
945 * Look for the qtype.
947 result = findrdataset(db, node, version, type, 0, now,
948 rdataset, sigrdataset);
949 if (result == ISC_R_SUCCESS)
955 if (type != dns_rdatatype_cname) {
956 result = findrdataset(db, node, version,
957 dns_rdatatype_cname, 0, now,
958 rdataset, sigrdataset);
959 if (result == ISC_R_SUCCESS) {
960 result = DNS_R_CNAME;
965 result = DNS_R_NXRRSET;
969 if (rdataset == &xrdataset && dns_rdataset_isassociated(rdataset))
970 dns_rdataset_disassociate(rdataset);
972 if (foundname != NULL) {
973 isc_result_t xresult;
975 xresult = dns_name_copy(xname, foundname, NULL);
976 if (xresult != ISC_R_SUCCESS) {
979 if (dns_rdataset_isassociated(rdataset))
980 dns_rdataset_disassociate(rdataset);
981 return (DNS_R_BADDB);
987 else if (node != NULL)
988 detachnode(db, &node);
994 find(dns_db_t *db, dns_name_t *name, dns_dbversion_t *version,
995 dns_rdatatype_t type, unsigned int options, isc_stdtime_t now,
996 dns_dbnode_t **nodep, dns_name_t *foundname,
997 dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset)
999 return (findext(db, name, version, type, options, now, nodep,
1000 foundname, NULL, NULL, rdataset, sigrdataset));
1004 allrdatasets(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1005 isc_stdtime_t now, dns_rdatasetiter_t **iteratorp)
1007 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *) db;
1008 sdlz_rdatasetiter_t *iterator;
1010 REQUIRE(VALID_SDLZDB(sdlz));
1012 REQUIRE(version == NULL ||
1013 version == (void*)&sdlz->dummy_version ||
1014 version == sdlz->future_version);
1019 iterator = isc_mem_get(db->mctx, sizeof(sdlz_rdatasetiter_t));
1020 if (iterator == NULL)
1021 return (ISC_R_NOMEMORY);
1023 iterator->common.magic = DNS_RDATASETITER_MAGIC;
1024 iterator->common.methods = &rdatasetiter_methods;
1025 iterator->common.db = db;
1026 iterator->common.node = NULL;
1027 attachnode(db, node, &iterator->common.node);
1028 iterator->common.version = version;
1029 iterator->common.now = now;
1031 *iteratorp = (dns_rdatasetiter_t *)iterator;
1033 return (ISC_R_SUCCESS);
1037 modrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1038 dns_rdataset_t *rdataset, unsigned int options,
1039 dns_sdlzmodrdataset_t mod_function)
1041 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1042 dns_master_style_t *style = NULL;
1043 isc_result_t result;
1044 isc_buffer_t *buffer = NULL;
1046 dns_sdlznode_t *sdlznode;
1047 char *rdatastr = NULL;
1048 char name[DNS_NAME_MAXTEXT + 1];
1050 REQUIRE(VALID_SDLZDB(sdlz));
1052 if (mod_function == NULL)
1053 return (ISC_R_NOTIMPLEMENTED);
1055 sdlznode = (dns_sdlznode_t *)node;
1059 dns_name_format(sdlznode->name, name, sizeof(name));
1061 mctx = sdlz->common.mctx;
1063 result = isc_buffer_allocate(mctx, &buffer, 1024);
1064 if (result != ISC_R_SUCCESS)
1067 result = dns_master_stylecreate(&style, 0, 0, 0, 0, 0, 0, 1, mctx);
1068 if (result != ISC_R_SUCCESS)
1071 result = dns_master_rdatasettotext(sdlznode->name, rdataset,
1073 if (result != ISC_R_SUCCESS)
1076 if (isc_buffer_usedlength(buffer) < 1) {
1077 result = ISC_R_BADADDRESSFORM;
1081 rdatastr = isc_buffer_base(buffer);
1082 if (rdatastr == NULL) {
1083 result = ISC_R_NOMEMORY;
1086 rdatastr[isc_buffer_usedlength(buffer) - 1] = 0;
1088 MAYBE_LOCK(sdlz->dlzimp);
1089 result = mod_function(name, rdatastr, sdlz->dlzimp->driverarg,
1090 sdlz->dbdata, version);
1091 MAYBE_UNLOCK(sdlz->dlzimp);
1094 isc_buffer_free(&buffer);
1096 dns_master_styledestroy(&style, mctx);
1102 addrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1103 isc_stdtime_t now, dns_rdataset_t *rdataset, unsigned int options,
1104 dns_rdataset_t *addedrdataset)
1106 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1107 isc_result_t result;
1110 UNUSED(addedrdataset);
1111 REQUIRE(VALID_SDLZDB(sdlz));
1113 if (sdlz->dlzimp->methods->addrdataset == NULL)
1114 return (ISC_R_NOTIMPLEMENTED);
1116 result = modrdataset(db, node, version, rdataset, options,
1117 sdlz->dlzimp->methods->addrdataset);
1123 subtractrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1124 dns_rdataset_t *rdataset, unsigned int options,
1125 dns_rdataset_t *newrdataset)
1127 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1128 isc_result_t result;
1130 UNUSED(newrdataset);
1131 REQUIRE(VALID_SDLZDB(sdlz));
1133 if (sdlz->dlzimp->methods->subtractrdataset == NULL) {
1134 return (ISC_R_NOTIMPLEMENTED);
1137 result = modrdataset(db, node, version, rdataset, options,
1138 sdlz->dlzimp->methods->subtractrdataset);
1143 deleterdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
1144 dns_rdatatype_t type, dns_rdatatype_t covers)
1146 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1147 char name[DNS_NAME_MAXTEXT + 1];
1148 char b_type[DNS_RDATATYPE_FORMATSIZE];
1149 dns_sdlznode_t *sdlznode;
1150 isc_result_t result;
1154 REQUIRE(VALID_SDLZDB(sdlz));
1156 if (sdlz->dlzimp->methods->delrdataset == NULL)
1157 return (ISC_R_NOTIMPLEMENTED);
1159 sdlznode = (dns_sdlznode_t *)node;
1160 dns_name_format(sdlznode->name, name, sizeof(name));
1161 dns_rdatatype_format(type, b_type, sizeof(b_type));
1163 MAYBE_LOCK(sdlz->dlzimp);
1164 result = sdlz->dlzimp->methods->delrdataset(name, b_type,
1165 sdlz->dlzimp->driverarg,
1166 sdlz->dbdata, version);
1167 MAYBE_UNLOCK(sdlz->dlzimp);
1172 static isc_boolean_t
1173 issecure(dns_db_t *db) {
1180 nodecount(dns_db_t *db) {
1186 static isc_boolean_t
1187 ispersistent(dns_db_t *db) {
1193 overmem(dns_db_t *db, isc_boolean_t overmem) {
1199 settask(dns_db_t *db, isc_task_t *task) {
1206 * getoriginnode() is used by the update code to find the
1207 * dns_rdatatype_dnskey record for a zone
1210 getoriginnode(dns_db_t *db, dns_dbnode_t **nodep) {
1211 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)db;
1212 isc_result_t result;
1214 REQUIRE(VALID_SDLZDB(sdlz));
1215 if (sdlz->dlzimp->methods->newversion == NULL)
1216 return (ISC_R_NOTIMPLEMENTED);
1218 result = findnodeext(db, &sdlz->common.origin, ISC_FALSE,
1220 if (result != ISC_R_SUCCESS)
1221 sdlz_log(ISC_LOG_ERROR, "sdlz getoriginnode failed : %s",
1222 isc_result_totext(result));
1226 static dns_dbmethods_t sdlzdb_methods = {
1255 NULL, /* transfernode */
1256 NULL, /* getnsec3parameters */
1257 NULL, /* findnsec3node */
1258 NULL, /* setsigningtime */
1259 NULL, /* getsigningtime */
1260 NULL, /* resigned */
1261 NULL, /* isdnssec */
1262 NULL, /* getrrsetstats */
1263 NULL, /* rpz_enabled */
1264 NULL, /* rpz_findips */
1270 * Database Iterator Methods. These methods were "borrowed" from the SDB
1271 * driver interface. See the SDB driver interface documentation for more info.
1275 dbiterator_destroy(dns_dbiterator_t **iteratorp) {
1276 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)(*iteratorp);
1277 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)sdlziter->common.db;
1279 while (!ISC_LIST_EMPTY(sdlziter->nodelist)) {
1280 dns_sdlznode_t *node;
1281 node = ISC_LIST_HEAD(sdlziter->nodelist);
1282 ISC_LIST_UNLINK(sdlziter->nodelist, node, link);
1286 dns_db_detach(&sdlziter->common.db);
1287 isc_mem_put(sdlz->common.mctx, sdlziter, sizeof(sdlz_dbiterator_t));
1293 dbiterator_first(dns_dbiterator_t *iterator) {
1294 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1296 sdlziter->current = ISC_LIST_HEAD(sdlziter->nodelist);
1297 if (sdlziter->current == NULL)
1298 return (ISC_R_NOMORE);
1300 return (ISC_R_SUCCESS);
1304 dbiterator_last(dns_dbiterator_t *iterator) {
1305 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1307 sdlziter->current = ISC_LIST_TAIL(sdlziter->nodelist);
1308 if (sdlziter->current == NULL)
1309 return (ISC_R_NOMORE);
1311 return (ISC_R_SUCCESS);
1315 dbiterator_seek(dns_dbiterator_t *iterator, dns_name_t *name) {
1316 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1318 sdlziter->current = ISC_LIST_HEAD(sdlziter->nodelist);
1319 while (sdlziter->current != NULL) {
1320 if (dns_name_equal(sdlziter->current->name, name))
1321 return (ISC_R_SUCCESS);
1322 sdlziter->current = ISC_LIST_NEXT(sdlziter->current, link);
1324 return (ISC_R_NOTFOUND);
1328 dbiterator_prev(dns_dbiterator_t *iterator) {
1329 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1331 sdlziter->current = ISC_LIST_PREV(sdlziter->current, link);
1332 if (sdlziter->current == NULL)
1333 return (ISC_R_NOMORE);
1335 return (ISC_R_SUCCESS);
1339 dbiterator_next(dns_dbiterator_t *iterator) {
1340 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1342 sdlziter->current = ISC_LIST_NEXT(sdlziter->current, link);
1343 if (sdlziter->current == NULL)
1344 return (ISC_R_NOMORE);
1346 return (ISC_R_SUCCESS);
1350 dbiterator_current(dns_dbiterator_t *iterator, dns_dbnode_t **nodep,
1353 sdlz_dbiterator_t *sdlziter = (sdlz_dbiterator_t *)iterator;
1355 attachnode(iterator->db, sdlziter->current, nodep);
1357 return (dns_name_copy(sdlziter->current->name, name, NULL));
1358 return (ISC_R_SUCCESS);
1362 dbiterator_pause(dns_dbiterator_t *iterator) {
1364 return (ISC_R_SUCCESS);
1368 dbiterator_origin(dns_dbiterator_t *iterator, dns_name_t *name) {
1370 return (dns_name_copy(dns_rootname, name, NULL));
1374 * Rdataset Methods. These methods were "borrowed" from the SDB driver
1375 * interface. See the SDB driver interface documentation for more info.
1379 disassociate(dns_rdataset_t *rdataset) {
1380 dns_dbnode_t *node = rdataset->private5;
1381 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *) node;
1382 dns_db_t *db = (dns_db_t *) sdlznode->sdlz;
1384 detachnode(db, &node);
1385 isc__rdatalist_disassociate(rdataset);
1389 rdataset_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
1390 dns_dbnode_t *node = source->private5;
1391 dns_sdlznode_t *sdlznode = (dns_sdlznode_t *) node;
1392 dns_db_t *db = (dns_db_t *) sdlznode->sdlz;
1393 dns_dbnode_t *tempdb = NULL;
1395 isc__rdatalist_clone(source, target);
1396 attachnode(db, node, &tempdb);
1397 source->private5 = tempdb;
1400 static dns_rdatasetmethods_t rdataset_methods = {
1402 isc__rdatalist_first,
1403 isc__rdatalist_next,
1404 isc__rdatalist_current,
1406 isc__rdatalist_count,
1407 isc__rdatalist_addnoqname,
1408 isc__rdatalist_getnoqname,
1419 list_tordataset(dns_rdatalist_t *rdatalist,
1420 dns_db_t *db, dns_dbnode_t *node,
1421 dns_rdataset_t *rdataset)
1424 * The sdlz rdataset is an rdatalist with some additions.
1425 * - private1 & private2 are used by the rdatalist.
1426 * - private3 & private 4 are unused.
1427 * - private5 is the node.
1430 /* This should never fail. */
1431 RUNTIME_CHECK(dns_rdatalist_tordataset(rdatalist, rdataset) ==
1434 rdataset->methods = &rdataset_methods;
1435 dns_db_attachnode(db, node, &rdataset->private5);
1439 * SDLZ core methods. This is the core of the new DLZ functionality.
1443 * Build a 'bind' database driver structure to be returned by
1444 * either the find zone or the allow zone transfer method.
1445 * This method is only available in this source file, it is
1446 * not made available anywhere else.
1450 dns_sdlzcreateDBP(isc_mem_t *mctx, void *driverarg, void *dbdata,
1451 dns_name_t *name, dns_rdataclass_t rdclass, dns_db_t **dbp)
1453 isc_result_t result;
1454 dns_sdlz_db_t *sdlzdb;
1455 dns_sdlzimplementation_t *imp;
1457 /* check that things are as we expect */
1458 REQUIRE(dbp != NULL && *dbp == NULL);
1459 REQUIRE(name != NULL);
1461 imp = (dns_sdlzimplementation_t *) driverarg;
1463 /* allocate and zero memory for driver structure */
1464 sdlzdb = isc_mem_get(mctx, sizeof(dns_sdlz_db_t));
1466 return (ISC_R_NOMEMORY);
1467 memset(sdlzdb, 0, sizeof(dns_sdlz_db_t));
1469 /* initialize and set origin */
1470 dns_name_init(&sdlzdb->common.origin, NULL);
1471 result = dns_name_dupwithoffsets(name, mctx, &sdlzdb->common.origin);
1472 if (result != ISC_R_SUCCESS)
1475 /* initialize the reference count mutex */
1476 result = isc_mutex_init(&sdlzdb->refcnt_lock);
1477 if (result != ISC_R_SUCCESS)
1480 /* set the rest of the database structure attributes */
1481 sdlzdb->dlzimp = imp;
1482 sdlzdb->common.methods = &sdlzdb_methods;
1483 sdlzdb->common.attributes = 0;
1484 sdlzdb->common.rdclass = rdclass;
1485 sdlzdb->common.mctx = NULL;
1486 sdlzdb->dbdata = dbdata;
1487 sdlzdb->references = 1;
1489 /* attach to the memory context */
1490 isc_mem_attach(mctx, &sdlzdb->common.mctx);
1492 /* mark structure as valid */
1493 sdlzdb->common.magic = DNS_DB_MAGIC;
1494 sdlzdb->common.impmagic = SDLZDB_MAGIC;
1495 *dbp = (dns_db_t *) sdlzdb;
1500 * reference count mutex could not be initialized, clean up
1504 dns_name_free(&sdlzdb->common.origin, mctx);
1506 isc_mem_put(mctx, sdlzdb, sizeof(dns_sdlz_db_t));
1511 dns_sdlzallowzonexfr(void *driverarg, void *dbdata, isc_mem_t *mctx,
1512 dns_rdataclass_t rdclass, dns_name_t *name,
1513 isc_sockaddr_t *clientaddr, dns_db_t **dbp)
1517 char namestr[DNS_NAME_MAXTEXT + 1];
1518 char clientstr[(sizeof "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255")
1520 isc_netaddr_t netaddr;
1521 isc_result_t result;
1522 dns_sdlzimplementation_t *imp;
1525 * Perform checks to make sure data is as we expect it to be.
1527 REQUIRE(driverarg != NULL);
1528 REQUIRE(name != NULL);
1529 REQUIRE(clientaddr != NULL);
1530 REQUIRE(dbp != NULL && *dbp == NULL);
1532 imp = (dns_sdlzimplementation_t *) driverarg;
1534 /* Convert DNS name to ascii text */
1535 isc_buffer_init(&b, namestr, sizeof(namestr));
1536 result = dns_name_totext(name, ISC_TRUE, &b);
1537 if (result != ISC_R_SUCCESS)
1539 isc_buffer_putuint8(&b, 0);
1541 /* convert client address to ascii text */
1542 isc_buffer_init(&b2, clientstr, sizeof(clientstr));
1543 isc_netaddr_fromsockaddr(&netaddr, clientaddr);
1544 result = isc_netaddr_totext(&netaddr, &b2);
1545 if (result != ISC_R_SUCCESS)
1547 isc_buffer_putuint8(&b2, 0);
1549 /* make sure strings are always lowercase */
1550 dns_sdlz_tolower(namestr);
1551 dns_sdlz_tolower(clientstr);
1553 /* Call SDLZ driver's find zone method */
1554 if (imp->methods->allowzonexfr != NULL) {
1556 result = imp->methods->allowzonexfr(imp->driverarg, dbdata,
1557 namestr, clientstr);
1560 * if zone is supported and transfers allowed build a 'bind'
1563 if (result == ISC_R_SUCCESS)
1564 result = dns_sdlzcreateDBP(mctx, driverarg, dbdata,
1565 name, rdclass, dbp);
1569 return (ISC_R_NOTIMPLEMENTED);
1573 dns_sdlzcreate(isc_mem_t *mctx, const char *dlzname, unsigned int argc,
1574 char *argv[], void *driverarg, void **dbdata)
1576 dns_sdlzimplementation_t *imp;
1577 isc_result_t result = ISC_R_NOTFOUND;
1579 /* Write debugging message to log */
1580 sdlz_log(ISC_LOG_DEBUG(2), "Loading SDLZ driver.");
1583 * Performs checks to make sure data is as we expect it to be.
1585 REQUIRE(driverarg != NULL);
1586 REQUIRE(dlzname != NULL);
1587 REQUIRE(dbdata != NULL);
1592 /* If the create method exists, call it. */
1593 if (imp->methods->create != NULL) {
1595 result = imp->methods->create(dlzname, argc, argv,
1596 imp->driverarg, dbdata);
1600 /* Write debugging message to log */
1601 if (result == ISC_R_SUCCESS) {
1602 sdlz_log(ISC_LOG_DEBUG(2), "SDLZ driver loaded successfully.");
1604 sdlz_log(ISC_LOG_ERROR, "SDLZ driver failed to load.");
1611 dns_sdlzdestroy(void *driverdata, void **dbdata)
1614 dns_sdlzimplementation_t *imp;
1616 /* Write debugging message to log */
1617 sdlz_log(ISC_LOG_DEBUG(2), "Unloading SDLZ driver.");
1621 /* If the destroy method exists, call it. */
1622 if (imp->methods->destroy != NULL) {
1624 imp->methods->destroy(imp->driverarg, dbdata);
1630 dns_sdlzfindzone(void *driverarg, void *dbdata, isc_mem_t *mctx,
1631 dns_rdataclass_t rdclass, dns_name_t *name, dns_db_t **dbp)
1634 char namestr[DNS_NAME_MAXTEXT + 1];
1635 isc_result_t result;
1636 dns_sdlzimplementation_t *imp;
1639 * Perform checks to make sure data is as we expect it to be.
1641 REQUIRE(driverarg != NULL);
1642 REQUIRE(name != NULL);
1643 REQUIRE(dbp != NULL && *dbp == NULL);
1645 imp = (dns_sdlzimplementation_t *) driverarg;
1647 /* Convert DNS name to ascii text */
1648 isc_buffer_init(&b, namestr, sizeof(namestr));
1649 result = dns_name_totext(name, ISC_TRUE, &b);
1650 if (result != ISC_R_SUCCESS)
1652 isc_buffer_putuint8(&b, 0);
1654 /* make sure strings are always lowercase */
1655 dns_sdlz_tolower(namestr);
1657 /* Call SDLZ driver's find zone method */
1659 result = imp->methods->findzone(imp->driverarg, dbdata, namestr);
1663 * if zone is supported build a 'bind' database driver
1664 * structure to return
1666 if (result == ISC_R_SUCCESS)
1667 result = dns_sdlzcreateDBP(mctx, driverarg, dbdata, name,
1675 dns_sdlzconfigure(void *driverarg, void *dbdata, dns_view_t *view)
1677 isc_result_t result;
1678 dns_sdlzimplementation_t *imp;
1680 REQUIRE(driverarg != NULL);
1682 imp = (dns_sdlzimplementation_t *) driverarg;
1684 /* Call SDLZ driver's configure method */
1685 if (imp->methods->configure != NULL) {
1687 result = imp->methods->configure(view, imp->driverarg, dbdata);
1690 result = ISC_R_SUCCESS;
1696 static isc_boolean_t
1697 dns_sdlzssumatch(dns_name_t *signer, dns_name_t *name, isc_netaddr_t *tcpaddr,
1698 dns_rdatatype_t type, const dst_key_t *key, void *driverarg,
1701 dns_sdlzimplementation_t *imp;
1702 char b_signer[DNS_NAME_FORMATSIZE];
1703 char b_name[DNS_NAME_FORMATSIZE];
1704 char b_addr[ISC_NETADDR_FORMATSIZE];
1705 char b_type[DNS_RDATATYPE_FORMATSIZE];
1706 char b_key[DST_KEY_FORMATSIZE];
1707 isc_buffer_t *tkey_token = NULL;
1708 isc_region_t token_region;
1709 isc_uint32_t token_len = 0;
1712 REQUIRE(driverarg != NULL);
1714 imp = (dns_sdlzimplementation_t *) driverarg;
1715 if (imp->methods->ssumatch == NULL)
1719 * Format the request elements. sdlz operates on strings, not
1723 dns_name_format(signer, b_signer, sizeof(b_signer));
1727 dns_name_format(name, b_name, sizeof(b_name));
1729 if (tcpaddr != NULL)
1730 isc_netaddr_format(tcpaddr, b_addr, sizeof(b_addr));
1734 dns_rdatatype_format(type, b_type, sizeof(b_type));
1737 dst_key_format(key, b_key, sizeof(b_key));
1738 tkey_token = dst_key_tkeytoken(key);
1742 if (tkey_token != NULL) {
1743 isc_buffer_region(tkey_token, &token_region);
1744 token_len = token_region.length;
1748 ret = imp->methods->ssumatch(b_signer, b_name, b_addr, b_type, b_key,
1750 token_len != 0 ? token_region.base : NULL,
1751 imp->driverarg, dbdata);
1756 static dns_dlzmethods_t sdlzmethods = {
1760 dns_sdlzallowzonexfr,
1770 dns_sdlz_putrr(dns_sdlzlookup_t *lookup, const char *type, dns_ttl_t ttl,
1773 dns_rdatalist_t *rdatalist;
1775 dns_rdatatype_t typeval;
1776 isc_consttextregion_t r;
1778 isc_buffer_t *rdatabuf = NULL;
1780 isc_result_t result;
1785 REQUIRE(VALID_SDLZLOOKUP(lookup));
1786 REQUIRE(type != NULL);
1787 REQUIRE(data != NULL);
1789 mctx = lookup->sdlz->common.mctx;
1792 r.length = strlen(type);
1793 result = dns_rdatatype_fromtext(&typeval, (void *) &r);
1794 if (result != ISC_R_SUCCESS)
1797 rdatalist = ISC_LIST_HEAD(lookup->lists);
1798 while (rdatalist != NULL) {
1799 if (rdatalist->type == typeval)
1801 rdatalist = ISC_LIST_NEXT(rdatalist, link);
1804 if (rdatalist == NULL) {
1805 rdatalist = isc_mem_get(mctx, sizeof(dns_rdatalist_t));
1806 if (rdatalist == NULL)
1807 return (ISC_R_NOMEMORY);
1808 rdatalist->rdclass = lookup->sdlz->common.rdclass;
1809 rdatalist->type = typeval;
1810 rdatalist->covers = 0;
1811 rdatalist->ttl = ttl;
1812 ISC_LIST_INIT(rdatalist->rdata);
1813 ISC_LINK_INIT(rdatalist, link);
1814 ISC_LIST_APPEND(lookup->lists, rdatalist, link);
1816 if (rdatalist->ttl > ttl) {
1818 * BIND9 doesn't enforce all RRs in an RRset
1819 * having the same TTL, as per RFC 2136,
1820 * section 7.12. If a DLZ backend has
1821 * different TTLs, then the best
1822 * we can do is return the lowest.
1824 rdatalist->ttl = ttl;
1827 rdata = isc_mem_get(mctx, sizeof(dns_rdata_t));
1829 return (ISC_R_NOMEMORY);
1830 dns_rdata_init(rdata);
1832 if ((lookup->sdlz->dlzimp->flags & DNS_SDLZFLAG_RELATIVERDATA) != 0)
1833 origin = &lookup->sdlz->common.origin;
1835 origin = dns_rootname;
1838 result = isc_lex_create(mctx, 64, &lex);
1839 if (result != ISC_R_SUCCESS)
1842 size = initial_size(data);
1844 isc_buffer_constinit(&b, data, strlen(data));
1845 isc_buffer_add(&b, strlen(data));
1847 result = isc_lex_openbuffer(lex, &b);
1848 if (result != ISC_R_SUCCESS)
1852 result = isc_buffer_allocate(mctx, &rdatabuf, size);
1853 if (result != ISC_R_SUCCESS)
1856 result = dns_rdata_fromtext(rdata, rdatalist->rdclass,
1857 rdatalist->type, lex,
1860 &lookup->callbacks);
1861 if (result != ISC_R_SUCCESS)
1862 isc_buffer_free(&rdatabuf);
1868 } while (result == ISC_R_NOSPACE);
1870 if (result != ISC_R_SUCCESS)
1873 ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
1874 ISC_LIST_APPEND(lookup->buffers, rdatabuf, link);
1877 isc_lex_destroy(&lex);
1879 return (ISC_R_SUCCESS);
1882 if (rdatabuf != NULL)
1883 isc_buffer_free(&rdatabuf);
1885 isc_lex_destroy(&lex);
1886 isc_mem_put(mctx, rdata, sizeof(dns_rdata_t));
1892 dns_sdlz_putnamedrr(dns_sdlzallnodes_t *allnodes, const char *name,
1893 const char *type, dns_ttl_t ttl, const char *data)
1895 dns_name_t *newname, *origin;
1896 dns_fixedname_t fnewname;
1897 dns_sdlz_db_t *sdlz = (dns_sdlz_db_t *)allnodes->common.db;
1898 dns_sdlznode_t *sdlznode;
1899 isc_mem_t *mctx = sdlz->common.mctx;
1901 isc_result_t result;
1903 dns_fixedname_init(&fnewname);
1904 newname = dns_fixedname_name(&fnewname);
1906 if ((sdlz->dlzimp->flags & DNS_SDLZFLAG_RELATIVERDATA) != 0)
1907 origin = &sdlz->common.origin;
1909 origin = dns_rootname;
1910 isc_buffer_constinit(&b, name, strlen(name));
1911 isc_buffer_add(&b, strlen(name));
1913 result = dns_name_fromtext(newname, &b, origin, 0, NULL);
1914 if (result != ISC_R_SUCCESS)
1917 if (allnodes->common.relative_names) {
1918 /* All names are relative to the root */
1919 unsigned int nlabels = dns_name_countlabels(newname);
1920 dns_name_getlabelsequence(newname, 0, nlabels - 1, newname);
1923 sdlznode = ISC_LIST_HEAD(allnodes->nodelist);
1924 if (sdlznode == NULL || !dns_name_equal(sdlznode->name, newname)) {
1926 result = createnode(sdlz, &sdlznode);
1927 if (result != ISC_R_SUCCESS)
1929 sdlznode->name = isc_mem_get(mctx, sizeof(dns_name_t));
1930 if (sdlznode->name == NULL) {
1931 destroynode(sdlznode);
1932 return (ISC_R_NOMEMORY);
1934 dns_name_init(sdlznode->name, NULL);
1935 result = dns_name_dup(newname, mctx, sdlznode->name);
1936 if (result != ISC_R_SUCCESS) {
1937 isc_mem_put(mctx, sdlznode->name, sizeof(dns_name_t));
1938 destroynode(sdlznode);
1941 ISC_LIST_PREPEND(allnodes->nodelist, sdlznode, link);
1942 if (allnodes->origin == NULL &&
1943 dns_name_equal(newname, &sdlz->common.origin))
1944 allnodes->origin = sdlznode;
1946 return (dns_sdlz_putrr(sdlznode, type, ttl, data));
1951 dns_sdlz_putsoa(dns_sdlzlookup_t *lookup, const char *mname, const char *rname,
1952 isc_uint32_t serial)
1954 char str[2 * DNS_NAME_MAXTEXT + 5 * (sizeof("2147483647")) + 7];
1957 REQUIRE(mname != NULL);
1958 REQUIRE(rname != NULL);
1960 n = snprintf(str, sizeof str, "%s %s %u %u %u %u %u",
1961 mname, rname, serial,
1962 SDLZ_DEFAULT_REFRESH, SDLZ_DEFAULT_RETRY,
1963 SDLZ_DEFAULT_EXPIRE, SDLZ_DEFAULT_MINIMUM);
1964 if (n >= (int)sizeof(str) || n < 0)
1965 return (ISC_R_NOSPACE);
1966 return (dns_sdlz_putrr(lookup, "SOA", SDLZ_DEFAULT_TTL, str));
1970 dns_sdlzregister(const char *drivername, const dns_sdlzmethods_t *methods,
1971 void *driverarg, unsigned int flags, isc_mem_t *mctx,
1972 dns_sdlzimplementation_t **sdlzimp)
1975 dns_sdlzimplementation_t *imp;
1976 isc_result_t result;
1979 * Performs checks to make sure data is as we expect it to be.
1981 REQUIRE(drivername != NULL);
1982 REQUIRE(methods != NULL);
1983 REQUIRE(methods->findzone != NULL);
1984 REQUIRE(methods->lookup != NULL);
1985 REQUIRE(mctx != NULL);
1986 REQUIRE(sdlzimp != NULL && *sdlzimp == NULL);
1987 REQUIRE((flags & ~(DNS_SDLZFLAG_RELATIVEOWNER |
1988 DNS_SDLZFLAG_RELATIVERDATA |
1989 DNS_SDLZFLAG_THREADSAFE)) == 0);
1991 /* Write debugging message to log */
1992 sdlz_log(ISC_LOG_DEBUG(2), "Registering SDLZ driver '%s'", drivername);
1995 * Allocate memory for a sdlz_implementation object. Error if
1998 imp = isc_mem_get(mctx, sizeof(dns_sdlzimplementation_t));
2000 return (ISC_R_NOMEMORY);
2002 /* Make sure memory region is set to all 0's */
2003 memset(imp, 0, sizeof(dns_sdlzimplementation_t));
2005 /* Store the data passed into this method */
2006 imp->methods = methods;
2007 imp->driverarg = driverarg;
2011 /* attach the new sdlz_implementation object to a memory context */
2012 isc_mem_attach(mctx, &imp->mctx);
2015 * initialize the driver lock, error if we cannot
2016 * (used if a driver does not support multiple threads)
2018 result = isc_mutex_init(&imp->driverlock);
2019 if (result != ISC_R_SUCCESS) {
2020 UNEXPECTED_ERROR(__FILE__, __LINE__,
2021 "isc_mutex_init() failed: %s",
2022 isc_result_totext(result));
2026 imp->dlz_imp = NULL;
2029 * register the DLZ driver. Pass in our "extra" sdlz information as
2030 * a driverarg. (that's why we stored the passed in driver arg in our
2031 * sdlz_implementation structure) Also, store the dlz_implementation
2032 * structure in our sdlz_implementation.
2034 result = dns_dlzregister(drivername, &sdlzmethods, imp, mctx,
2037 /* if registration fails, cleanup and get outta here. */
2038 if (result != ISC_R_SUCCESS)
2043 return (ISC_R_SUCCESS);
2046 /* destroy the driver lock, we don't need it anymore */
2047 DESTROYLOCK(&imp->driverlock);
2051 * return the memory back to the available memory pool and
2052 * remove it from the memory context.
2054 isc_mem_put(mctx, imp, sizeof(dns_sdlzimplementation_t));
2055 isc_mem_detach(&mctx);
2060 dns_sdlzunregister(dns_sdlzimplementation_t **sdlzimp) {
2061 dns_sdlzimplementation_t *imp;
2064 /* Write debugging message to log */
2065 sdlz_log(ISC_LOG_DEBUG(2), "Unregistering SDLZ driver.");
2068 * Performs checks to make sure data is as we expect it to be.
2070 REQUIRE(sdlzimp != NULL && *sdlzimp != NULL);
2074 /* Unregister the DLZ driver implementation */
2075 dns_dlzunregister(&imp->dlz_imp);
2077 /* destroy the driver lock, we don't need it anymore */
2078 DESTROYLOCK(&imp->driverlock);
2083 * return the memory back to the available memory pool and
2084 * remove it from the memory context.
2086 isc_mem_put(mctx, imp, sizeof(dns_sdlzimplementation_t));
2087 isc_mem_detach(&mctx);
2094 dns_sdlz_setdb(dns_dlzdb_t *dlzdatabase, dns_rdataclass_t rdclass,
2095 dns_name_t *name, dns_db_t **dbp)
2097 isc_result_t result;
2099 result = dns_sdlzcreateDBP(dlzdatabase->mctx,
2100 dlzdatabase->implementation->driverarg,
2101 dlzdatabase->dbdata, name, rdclass, dbp);