2 * Portions Copyright (C) 2005-2009 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.
53 /* $Id: sdlz.c,v 1.14.94.6 2009/06/26 06:23:47 marka Exp $ */
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
;
113 struct dns_sdlzlookup
{
117 ISC_LIST(dns_rdatalist_t
) lists
;
118 ISC_LIST(isc_buffer_t
) buffers
;
120 ISC_LINK(dns_sdlzlookup_t
) link
;
122 dns_rdatacallbacks_t callbacks
;
124 unsigned int references
;
127 typedef struct dns_sdlzlookup dns_sdlznode_t
;
129 struct dns_sdlzallnodes
{
130 dns_dbiterator_t common
;
131 ISC_LIST(dns_sdlznode_t
) nodelist
;
132 dns_sdlznode_t
*current
;
133 dns_sdlznode_t
*origin
;
136 typedef dns_sdlzallnodes_t sdlz_dbiterator_t
;
138 typedef struct sdlz_rdatasetiter
{
139 dns_rdatasetiter_t common
;
140 dns_rdatalist_t
*current
;
141 } sdlz_rdatasetiter_t
;
144 #define SDLZDB_MAGIC ISC_MAGIC('D', 'L', 'Z', 'S')
147 * Note that "impmagic" is not the first four bytes of the struct, so
148 * ISC_MAGIC_VALID cannot be used.
151 #define VALID_SDLZDB(sdlzdb) ((sdlzdb) != NULL && \
152 (sdlzdb)->common.impmagic == SDLZDB_MAGIC)
154 #define SDLZLOOKUP_MAGIC ISC_MAGIC('D','L','Z','L')
155 #define VALID_SDLZLOOKUP(sdlzl) ISC_MAGIC_VALID(sdlzl, SDLZLOOKUP_MAGIC)
156 #define VALID_SDLZNODE(sdlzn) VALID_SDLZLOOKUP(sdlzn)
158 /* These values are taken from RFC 1537 */
159 #define SDLZ_DEFAULT_REFRESH (60 * 60 * 8)
160 #define SDLZ_DEFAULT_RETRY (60 * 60 * 2)
161 #define SDLZ_DEFAULT_EXPIRE (60 * 60 * 24 * 7)
162 #define SDLZ_DEFAULT_MINIMUM (60 * 60 * 24)
164 /* This is a reasonable value */
165 #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
= {
228 /*% Converts the input string to lowercase, in place. */
231 dns_sdlz_tolower(char *str
) {
233 unsigned int len
= strlen(str
);
236 for (i
= 0; i
< len
; i
++) {
237 if (str
[i
] >= 'A' && str
[i
] <= 'Z')
243 static inline unsigned int
244 initial_size(const char *data
) {
245 unsigned int len
= (strlen(data
) / 64) + 1;
246 return (len
* 64 + 64);
250 * Rdataset Iterator Methods. These methods were "borrowed" from the SDB
251 * driver interface. See the SDB driver interface documentation for more info.
255 rdatasetiter_destroy(dns_rdatasetiter_t
**iteratorp
) {
256 sdlz_rdatasetiter_t
*sdlziterator
=
257 (sdlz_rdatasetiter_t
*)(*iteratorp
);
259 detachnode(sdlziterator
->common
.db
, &sdlziterator
->common
.node
);
260 isc_mem_put(sdlziterator
->common
.db
->mctx
, sdlziterator
,
261 sizeof(sdlz_rdatasetiter_t
));
266 rdatasetiter_first(dns_rdatasetiter_t
*iterator
) {
267 sdlz_rdatasetiter_t
*sdlziterator
= (sdlz_rdatasetiter_t
*)iterator
;
268 dns_sdlznode_t
*sdlznode
= (dns_sdlznode_t
*)iterator
->node
;
270 if (ISC_LIST_EMPTY(sdlznode
->lists
))
271 return (ISC_R_NOMORE
);
272 sdlziterator
->current
= ISC_LIST_HEAD(sdlznode
->lists
);
273 return (ISC_R_SUCCESS
);
277 rdatasetiter_next(dns_rdatasetiter_t
*iterator
) {
278 sdlz_rdatasetiter_t
*sdlziterator
= (sdlz_rdatasetiter_t
*)iterator
;
280 sdlziterator
->current
= ISC_LIST_NEXT(sdlziterator
->current
, link
);
281 if (sdlziterator
->current
== NULL
)
282 return (ISC_R_NOMORE
);
284 return (ISC_R_SUCCESS
);
288 rdatasetiter_current(dns_rdatasetiter_t
*iterator
, dns_rdataset_t
*rdataset
) {
289 sdlz_rdatasetiter_t
*sdlziterator
= (sdlz_rdatasetiter_t
*)iterator
;
291 list_tordataset(sdlziterator
->current
, iterator
->db
, iterator
->node
,
295 static dns_rdatasetitermethods_t rdatasetiter_methods
= {
296 rdatasetiter_destroy
,
303 * DB routines. These methods were "borrowed" from the SDB driver interface.
304 * See the SDB driver interface documentation for more info.
308 attach(dns_db_t
*source
, dns_db_t
**targetp
) {
309 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*) source
;
311 REQUIRE(VALID_SDLZDB(sdlz
));
313 LOCK(&sdlz
->refcnt_lock
);
314 REQUIRE(sdlz
->references
> 0);
316 UNLOCK(&sdlz
->refcnt_lock
);
322 destroy(dns_sdlz_db_t
*sdlz
) {
324 mctx
= sdlz
->common
.mctx
;
326 sdlz
->common
.magic
= 0;
327 sdlz
->common
.impmagic
= 0;
329 isc_mutex_destroy(&sdlz
->refcnt_lock
);
331 dns_name_free(&sdlz
->common
.origin
, mctx
);
333 isc_mem_put(mctx
, sdlz
, sizeof(dns_sdlz_db_t
));
334 isc_mem_detach(&mctx
);
338 detach(dns_db_t
**dbp
) {
339 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)(*dbp
);
340 isc_boolean_t need_destroy
= ISC_FALSE
;
342 REQUIRE(VALID_SDLZDB(sdlz
));
343 LOCK(&sdlz
->refcnt_lock
);
344 REQUIRE(sdlz
->references
> 0);
346 if (sdlz
->references
== 0)
347 need_destroy
= ISC_TRUE
;
348 UNLOCK(&sdlz
->refcnt_lock
);
357 beginload(dns_db_t
*db
, dns_addrdatasetfunc_t
*addp
, dns_dbload_t
**dbloadp
) {
361 return (ISC_R_NOTIMPLEMENTED
);
365 endload(dns_db_t
*db
, dns_dbload_t
**dbloadp
) {
368 return (ISC_R_NOTIMPLEMENTED
);
372 dump(dns_db_t
*db
, dns_dbversion_t
*version
, const char *filename
,
373 dns_masterformat_t masterformat
)
378 UNUSED(masterformat
);
379 return (ISC_R_NOTIMPLEMENTED
);
383 currentversion(dns_db_t
*db
, dns_dbversion_t
**versionp
) {
384 REQUIRE(versionp
!= NULL
&& *versionp
== NULL
);
388 *versionp
= (void *) &dummy
;
393 newversion(dns_db_t
*db
, dns_dbversion_t
**versionp
) {
397 return (ISC_R_NOTIMPLEMENTED
);
401 attachversion(dns_db_t
*db
, dns_dbversion_t
*source
,
402 dns_dbversion_t
**targetp
)
404 REQUIRE(source
!= NULL
&& source
== (void *) &dummy
);
413 closeversion(dns_db_t
*db
, dns_dbversion_t
**versionp
, isc_boolean_t commit
) {
414 REQUIRE(versionp
!= NULL
&& *versionp
== (void *) &dummy
);
415 REQUIRE(commit
== ISC_FALSE
);
424 createnode(dns_sdlz_db_t
*sdlz
, dns_sdlznode_t
**nodep
) {
425 dns_sdlznode_t
*node
;
428 node
= isc_mem_get(sdlz
->common
.mctx
, sizeof(dns_sdlznode_t
));
430 return (ISC_R_NOMEMORY
);
433 attach((dns_db_t
*)sdlz
, (dns_db_t
**)&node
->sdlz
);
434 ISC_LIST_INIT(node
->lists
);
435 ISC_LIST_INIT(node
->buffers
);
436 ISC_LINK_INIT(node
, link
);
438 result
= isc_mutex_init(&node
->lock
);
439 if (result
!= ISC_R_SUCCESS
) {
440 UNEXPECTED_ERROR(__FILE__
, __LINE__
,
441 "isc_mutex_init() failed: %s",
442 isc_result_totext(result
));
443 isc_mem_put(sdlz
->common
.mctx
, node
, sizeof(dns_sdlznode_t
));
444 return (ISC_R_UNEXPECTED
);
446 dns_rdatacallbacks_init(&node
->callbacks
);
447 node
->references
= 1;
448 node
->magic
= SDLZLOOKUP_MAGIC
;
451 return (ISC_R_SUCCESS
);
455 destroynode(dns_sdlznode_t
*node
) {
456 dns_rdatalist_t
*list
;
464 mctx
= sdlz
->common
.mctx
;
466 while (!ISC_LIST_EMPTY(node
->lists
)) {
467 list
= ISC_LIST_HEAD(node
->lists
);
468 while (!ISC_LIST_EMPTY(list
->rdata
)) {
469 rdata
= ISC_LIST_HEAD(list
->rdata
);
470 ISC_LIST_UNLINK(list
->rdata
, rdata
, link
);
471 isc_mem_put(mctx
, rdata
, sizeof(dns_rdata_t
));
473 ISC_LIST_UNLINK(node
->lists
, list
, link
);
474 isc_mem_put(mctx
, list
, sizeof(dns_rdatalist_t
));
477 while (!ISC_LIST_EMPTY(node
->buffers
)) {
478 b
= ISC_LIST_HEAD(node
->buffers
);
479 ISC_LIST_UNLINK(node
->buffers
, b
, link
);
483 if (node
->name
!= NULL
) {
484 dns_name_free(node
->name
, mctx
);
485 isc_mem_put(mctx
, node
->name
, sizeof(dns_name_t
));
487 DESTROYLOCK(&node
->lock
);
489 isc_mem_put(mctx
, node
, sizeof(dns_sdlznode_t
));
495 findnode(dns_db_t
*db
, dns_name_t
*name
, isc_boolean_t create
,
496 dns_dbnode_t
**nodep
)
498 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)db
;
499 dns_sdlznode_t
*node
= NULL
;
502 char namestr
[DNS_NAME_MAXTEXT
+ 1];
504 char zonestr
[DNS_NAME_MAXTEXT
+ 1];
505 isc_boolean_t isorigin
;
506 dns_sdlzauthorityfunc_t authority
;
508 REQUIRE(VALID_SDLZDB(sdlz
));
509 REQUIRE(create
== ISC_FALSE
);
510 REQUIRE(nodep
!= NULL
&& *nodep
== NULL
);
515 isc_buffer_init(&b
, namestr
, sizeof(namestr
));
516 if ((sdlz
->dlzimp
->flags
& DNS_SDLZFLAG_RELATIVEOWNER
) != 0) {
520 labels
= dns_name_countlabels(name
) -
521 dns_name_countlabels(&db
->origin
);
522 dns_name_init(&relname
, NULL
);
523 dns_name_getlabelsequence(name
, 0, labels
, &relname
);
524 result
= dns_name_totext(&relname
, ISC_TRUE
, &b
);
525 if (result
!= ISC_R_SUCCESS
)
528 result
= dns_name_totext(name
, ISC_TRUE
, &b
);
529 if (result
!= ISC_R_SUCCESS
)
532 isc_buffer_putuint8(&b
, 0);
534 isc_buffer_init(&b2
, zonestr
, sizeof(zonestr
));
535 result
= dns_name_totext(&sdlz
->common
.origin
, ISC_TRUE
, &b2
);
536 if (result
!= ISC_R_SUCCESS
)
538 isc_buffer_putuint8(&b2
, 0);
540 result
= createnode(sdlz
, &node
);
541 if (result
!= ISC_R_SUCCESS
)
544 isorigin
= dns_name_equal(name
, &sdlz
->common
.origin
);
546 /* make sure strings are always lowercase */
547 dns_sdlz_tolower(zonestr
);
548 dns_sdlz_tolower(namestr
);
550 MAYBE_LOCK(sdlz
->dlzimp
);
552 /* try to lookup the host (namestr) */
553 result
= sdlz
->dlzimp
->methods
->lookup(zonestr
, namestr
,
554 sdlz
->dlzimp
->driverarg
,
558 * if the host (namestr) was not found, try to lookup a
561 if (result
!= ISC_R_SUCCESS
) {
562 result
= sdlz
->dlzimp
->methods
->lookup(zonestr
, "*",
563 sdlz
->dlzimp
->driverarg
,
567 MAYBE_UNLOCK(sdlz
->dlzimp
);
569 if (result
!= ISC_R_SUCCESS
&& !isorigin
) {
574 if (isorigin
&& sdlz
->dlzimp
->methods
->authority
!= NULL
) {
575 MAYBE_LOCK(sdlz
->dlzimp
);
576 authority
= sdlz
->dlzimp
->methods
->authority
;
577 result
= (*authority
)(zonestr
, sdlz
->dlzimp
->driverarg
,
579 MAYBE_UNLOCK(sdlz
->dlzimp
);
580 if (result
!= ISC_R_SUCCESS
&&
581 result
!= ISC_R_NOTIMPLEMENTED
) {
588 return (ISC_R_SUCCESS
);
592 findzonecut(dns_db_t
*db
, dns_name_t
*name
, unsigned int options
,
593 isc_stdtime_t now
, dns_dbnode_t
**nodep
, dns_name_t
*foundname
,
594 dns_rdataset_t
*rdataset
, dns_rdataset_t
*sigrdataset
)
605 return (ISC_R_NOTIMPLEMENTED
);
609 attachnode(dns_db_t
*db
, dns_dbnode_t
*source
, dns_dbnode_t
**targetp
) {
610 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)db
;
611 dns_sdlznode_t
*node
= (dns_sdlznode_t
*)source
;
613 REQUIRE(VALID_SDLZDB(sdlz
));
618 INSIST(node
->references
> 0);
620 INSIST(node
->references
!= 0); /* Catch overflow. */
627 detachnode(dns_db_t
*db
, dns_dbnode_t
**targetp
) {
628 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)db
;
629 dns_sdlznode_t
*node
;
630 isc_boolean_t need_destroy
= ISC_FALSE
;
632 REQUIRE(VALID_SDLZDB(sdlz
));
633 REQUIRE(targetp
!= NULL
&& *targetp
!= NULL
);
637 node
= (dns_sdlznode_t
*)(*targetp
);
640 INSIST(node
->references
> 0);
642 if (node
->references
== 0)
643 need_destroy
= ISC_TRUE
;
653 expirenode(dns_db_t
*db
, dns_dbnode_t
*node
, isc_stdtime_t now
) {
658 return (ISC_R_UNEXPECTED
);
662 printnode(dns_db_t
*db
, dns_dbnode_t
*node
, FILE *out
) {
670 createiterator(dns_db_t
*db
, isc_boolean_t relative_names
,
671 dns_dbiterator_t
**iteratorp
)
673 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)db
;
674 sdlz_dbiterator_t
*sdlziter
;
677 char zonestr
[DNS_NAME_MAXTEXT
+ 1];
679 REQUIRE(VALID_SDLZDB(sdlz
));
681 if (sdlz
->dlzimp
->methods
->allnodes
== NULL
)
682 return (ISC_R_NOTIMPLEMENTED
);
684 isc_buffer_init(&b
, zonestr
, sizeof(zonestr
));
685 result
= dns_name_totext(&sdlz
->common
.origin
, ISC_TRUE
, &b
);
686 if (result
!= ISC_R_SUCCESS
)
688 isc_buffer_putuint8(&b
, 0);
690 sdlziter
= isc_mem_get(sdlz
->common
.mctx
, sizeof(sdlz_dbiterator_t
));
691 if (sdlziter
== NULL
)
692 return (ISC_R_NOMEMORY
);
694 sdlziter
->common
.methods
= &dbiterator_methods
;
695 sdlziter
->common
.db
= NULL
;
696 dns_db_attach(db
, &sdlziter
->common
.db
);
697 sdlziter
->common
.relative_names
= relative_names
;
698 sdlziter
->common
.magic
= DNS_DBITERATOR_MAGIC
;
699 ISC_LIST_INIT(sdlziter
->nodelist
);
700 sdlziter
->current
= NULL
;
701 sdlziter
->origin
= NULL
;
703 /* make sure strings are always lowercase */
704 dns_sdlz_tolower(zonestr
);
706 MAYBE_LOCK(sdlz
->dlzimp
);
707 result
= sdlz
->dlzimp
->methods
->allnodes(zonestr
,
708 sdlz
->dlzimp
->driverarg
,
709 sdlz
->dbdata
, sdlziter
);
710 MAYBE_UNLOCK(sdlz
->dlzimp
);
711 if (result
!= ISC_R_SUCCESS
) {
712 dns_dbiterator_t
*iter
= &sdlziter
->common
;
713 dbiterator_destroy(&iter
);
717 if (sdlziter
->origin
!= NULL
) {
718 ISC_LIST_UNLINK(sdlziter
->nodelist
, sdlziter
->origin
, link
);
719 ISC_LIST_PREPEND(sdlziter
->nodelist
, sdlziter
->origin
, link
);
722 *iteratorp
= (dns_dbiterator_t
*)sdlziter
;
724 return (ISC_R_SUCCESS
);
728 findrdataset(dns_db_t
*db
, dns_dbnode_t
*node
, dns_dbversion_t
*version
,
729 dns_rdatatype_t type
, dns_rdatatype_t covers
,
730 isc_stdtime_t now
, dns_rdataset_t
*rdataset
,
731 dns_rdataset_t
*sigrdataset
)
733 dns_rdatalist_t
*list
;
734 dns_sdlznode_t
*sdlznode
= (dns_sdlznode_t
*)node
;
736 REQUIRE(VALID_SDLZNODE(node
));
744 if (type
== dns_rdatatype_sig
|| type
== dns_rdatatype_rrsig
)
745 return (ISC_R_NOTIMPLEMENTED
);
747 list
= ISC_LIST_HEAD(sdlznode
->lists
);
748 while (list
!= NULL
) {
749 if (list
->type
== type
)
751 list
= ISC_LIST_NEXT(list
, link
);
754 return (ISC_R_NOTFOUND
);
756 list_tordataset(list
, db
, node
, rdataset
);
758 return (ISC_R_SUCCESS
);
762 find(dns_db_t
*db
, dns_name_t
*name
, dns_dbversion_t
*version
,
763 dns_rdatatype_t type
, unsigned int options
, isc_stdtime_t now
,
764 dns_dbnode_t
**nodep
, dns_name_t
*foundname
,
765 dns_rdataset_t
*rdataset
, dns_rdataset_t
*sigrdataset
)
767 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)db
;
768 dns_dbnode_t
*node
= NULL
;
769 dns_fixedname_t fname
;
770 dns_rdataset_t xrdataset
;
772 unsigned int nlabels
, olabels
;
776 REQUIRE(VALID_SDLZDB(sdlz
));
777 REQUIRE(nodep
== NULL
|| *nodep
== NULL
);
778 REQUIRE(version
== NULL
|| version
== (void *) &dummy
);
783 if (!dns_name_issubdomain(name
, &db
->origin
))
784 return (DNS_R_NXDOMAIN
);
786 olabels
= dns_name_countlabels(&db
->origin
);
787 nlabels
= dns_name_countlabels(name
);
789 dns_fixedname_init(&fname
);
790 xname
= dns_fixedname_name(&fname
);
792 if (rdataset
== NULL
) {
793 dns_rdataset_init(&xrdataset
);
794 rdataset
= &xrdataset
;
797 result
= DNS_R_NXDOMAIN
;
799 for (i
= olabels
; i
<= nlabels
; i
++) {
801 * Unless this is an explicit lookup at the origin, don't
802 * look at the origin.
804 if (i
== olabels
&& i
!= nlabels
)
808 * Look up the next label.
810 dns_name_getlabelsequence(name
, nlabels
- i
, i
, xname
);
811 result
= findnode(db
, xname
, ISC_FALSE
, &node
);
812 if (result
!= ISC_R_SUCCESS
) {
813 result
= DNS_R_NXDOMAIN
;
818 * Look for a DNAME at the current label, unless this is
822 result
= findrdataset(db
, node
, version
,
824 0, now
, rdataset
, sigrdataset
);
825 if (result
== ISC_R_SUCCESS
) {
826 result
= DNS_R_DNAME
;
832 * Look for an NS at the current label, unless this is the
833 * origin or glue is ok.
835 if (i
!= olabels
&& (options
& DNS_DBFIND_GLUEOK
) == 0) {
836 result
= findrdataset(db
, node
, version
,
838 0, now
, rdataset
, sigrdataset
);
839 if (result
== ISC_R_SUCCESS
) {
840 if (i
== nlabels
&& type
== dns_rdatatype_any
)
842 result
= DNS_R_ZONECUT
;
843 dns_rdataset_disassociate(rdataset
);
844 if (sigrdataset
!= NULL
&&
845 dns_rdataset_isassociated
847 dns_rdataset_disassociate
851 result
= DNS_R_DELEGATION
;
857 * If the current name is not the qname, add another label
867 * If we're looking for ANY, we're done.
869 if (type
== dns_rdatatype_any
) {
870 result
= ISC_R_SUCCESS
;
875 * Look for the qtype.
877 result
= findrdataset(db
, node
, version
, type
,
878 0, now
, rdataset
, sigrdataset
);
879 if (result
== ISC_R_SUCCESS
)
885 if (type
!= dns_rdatatype_cname
) {
886 result
= findrdataset(db
, node
, version
,
888 0, now
, rdataset
, sigrdataset
);
889 if (result
== ISC_R_SUCCESS
) {
890 result
= DNS_R_CNAME
;
895 result
= DNS_R_NXRRSET
;
899 if (rdataset
== &xrdataset
&& dns_rdataset_isassociated(rdataset
))
900 dns_rdataset_disassociate(rdataset
);
902 if (foundname
!= NULL
) {
903 isc_result_t xresult
;
905 xresult
= dns_name_copy(xname
, foundname
, NULL
);
906 if (xresult
!= ISC_R_SUCCESS
) {
909 if (dns_rdataset_isassociated(rdataset
))
910 dns_rdataset_disassociate(rdataset
);
911 return (DNS_R_BADDB
);
917 else if (node
!= NULL
)
918 detachnode(db
, &node
);
924 allrdatasets(dns_db_t
*db
, dns_dbnode_t
*node
, dns_dbversion_t
*version
,
925 isc_stdtime_t now
, dns_rdatasetiter_t
**iteratorp
)
927 sdlz_rdatasetiter_t
*iterator
;
929 REQUIRE(version
== NULL
|| version
== &dummy
);
934 iterator
= isc_mem_get(db
->mctx
, sizeof(sdlz_rdatasetiter_t
));
935 if (iterator
== NULL
)
936 return (ISC_R_NOMEMORY
);
938 iterator
->common
.magic
= DNS_RDATASETITER_MAGIC
;
939 iterator
->common
.methods
= &rdatasetiter_methods
;
940 iterator
->common
.db
= db
;
941 iterator
->common
.node
= NULL
;
942 attachnode(db
, node
, &iterator
->common
.node
);
943 iterator
->common
.version
= version
;
944 iterator
->common
.now
= now
;
946 *iteratorp
= (dns_rdatasetiter_t
*)iterator
;
948 return (ISC_R_SUCCESS
);
952 addrdataset(dns_db_t
*db
, dns_dbnode_t
*node
, dns_dbversion_t
*version
,
953 isc_stdtime_t now
, dns_rdataset_t
*rdataset
, unsigned int options
,
954 dns_rdataset_t
*addedrdataset
)
962 UNUSED(addedrdataset
);
964 return (ISC_R_NOTIMPLEMENTED
);
968 subtractrdataset(dns_db_t
*db
, dns_dbnode_t
*node
, dns_dbversion_t
*version
,
969 dns_rdataset_t
*rdataset
, unsigned int options
,
970 dns_rdataset_t
*newrdataset
)
979 return (ISC_R_NOTIMPLEMENTED
);
983 deleterdataset(dns_db_t
*db
, dns_dbnode_t
*node
, dns_dbversion_t
*version
,
984 dns_rdatatype_t type
, dns_rdatatype_t covers
)
992 return (ISC_R_NOTIMPLEMENTED
);
996 issecure(dns_db_t
*db
) {
1003 nodecount(dns_db_t
*db
) {
1009 static isc_boolean_t
1010 ispersistent(dns_db_t
*db
) {
1016 overmem(dns_db_t
*db
, isc_boolean_t overmem
) {
1022 settask(dns_db_t
*db
, isc_task_t
*task
) {
1028 static dns_dbmethods_t sdlzdb_methods
= {
1062 * Database Iterator Methods. These methods were "borrowed" from the SDB
1063 * driver interface. See the SDB driver interface documentation for more info.
1067 dbiterator_destroy(dns_dbiterator_t
**iteratorp
) {
1068 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)(*iteratorp
);
1069 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)sdlziter
->common
.db
;
1071 while (!ISC_LIST_EMPTY(sdlziter
->nodelist
)) {
1072 dns_sdlznode_t
*node
;
1073 node
= ISC_LIST_HEAD(sdlziter
->nodelist
);
1074 ISC_LIST_UNLINK(sdlziter
->nodelist
, node
, link
);
1078 dns_db_detach(&sdlziter
->common
.db
);
1079 isc_mem_put(sdlz
->common
.mctx
, sdlziter
, sizeof(sdlz_dbiterator_t
));
1085 dbiterator_first(dns_dbiterator_t
*iterator
) {
1086 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)iterator
;
1088 sdlziter
->current
= ISC_LIST_HEAD(sdlziter
->nodelist
);
1089 if (sdlziter
->current
== NULL
)
1090 return (ISC_R_NOMORE
);
1092 return (ISC_R_SUCCESS
);
1096 dbiterator_last(dns_dbiterator_t
*iterator
) {
1097 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)iterator
;
1099 sdlziter
->current
= ISC_LIST_TAIL(sdlziter
->nodelist
);
1100 if (sdlziter
->current
== NULL
)
1101 return (ISC_R_NOMORE
);
1103 return (ISC_R_SUCCESS
);
1107 dbiterator_seek(dns_dbiterator_t
*iterator
, dns_name_t
*name
) {
1108 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)iterator
;
1110 sdlziter
->current
= ISC_LIST_HEAD(sdlziter
->nodelist
);
1111 while (sdlziter
->current
!= NULL
) {
1112 if (dns_name_equal(sdlziter
->current
->name
, name
))
1113 return (ISC_R_SUCCESS
);
1114 sdlziter
->current
= ISC_LIST_NEXT(sdlziter
->current
, link
);
1116 return (ISC_R_NOTFOUND
);
1120 dbiterator_prev(dns_dbiterator_t
*iterator
) {
1121 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)iterator
;
1123 sdlziter
->current
= ISC_LIST_PREV(sdlziter
->current
, link
);
1124 if (sdlziter
->current
== NULL
)
1125 return (ISC_R_NOMORE
);
1127 return (ISC_R_SUCCESS
);
1131 dbiterator_next(dns_dbiterator_t
*iterator
) {
1132 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)iterator
;
1134 sdlziter
->current
= ISC_LIST_NEXT(sdlziter
->current
, link
);
1135 if (sdlziter
->current
== NULL
)
1136 return (ISC_R_NOMORE
);
1138 return (ISC_R_SUCCESS
);
1142 dbiterator_current(dns_dbiterator_t
*iterator
, dns_dbnode_t
**nodep
,
1145 sdlz_dbiterator_t
*sdlziter
= (sdlz_dbiterator_t
*)iterator
;
1147 attachnode(iterator
->db
, sdlziter
->current
, nodep
);
1149 return (dns_name_copy(sdlziter
->current
->name
, name
, NULL
));
1150 return (ISC_R_SUCCESS
);
1154 dbiterator_pause(dns_dbiterator_t
*iterator
) {
1156 return (ISC_R_SUCCESS
);
1160 dbiterator_origin(dns_dbiterator_t
*iterator
, dns_name_t
*name
) {
1162 return (dns_name_copy(dns_rootname
, name
, NULL
));
1166 * Rdataset Methods. These methods were "borrowed" from the SDB driver
1167 * interface. See the SDB driver interface documentation for more info.
1171 disassociate(dns_rdataset_t
*rdataset
) {
1172 dns_dbnode_t
*node
= rdataset
->private5
;
1173 dns_sdlznode_t
*sdlznode
= (dns_sdlznode_t
*) node
;
1174 dns_db_t
*db
= (dns_db_t
*) sdlznode
->sdlz
;
1176 detachnode(db
, &node
);
1177 isc__rdatalist_disassociate(rdataset
);
1181 rdataset_clone(dns_rdataset_t
*source
, dns_rdataset_t
*target
) {
1182 dns_dbnode_t
*node
= source
->private5
;
1183 dns_sdlznode_t
*sdlznode
= (dns_sdlznode_t
*) node
;
1184 dns_db_t
*db
= (dns_db_t
*) sdlznode
->sdlz
;
1185 dns_dbnode_t
*tempdb
= NULL
;
1187 isc__rdatalist_clone(source
, target
);
1188 attachnode(db
, node
, &tempdb
);
1189 source
->private5
= tempdb
;
1192 static dns_rdatasetmethods_t rdataset_methods
= {
1194 isc__rdatalist_first
,
1195 isc__rdatalist_next
,
1196 isc__rdatalist_current
,
1198 isc__rdatalist_count
,
1199 isc__rdatalist_addnoqname
,
1200 isc__rdatalist_getnoqname
,
1207 list_tordataset(dns_rdatalist_t
*rdatalist
,
1208 dns_db_t
*db
, dns_dbnode_t
*node
,
1209 dns_rdataset_t
*rdataset
)
1212 * The sdlz rdataset is an rdatalist with some additions.
1213 * - private1 & private2 are used by the rdatalist.
1214 * - private3 & private 4 are unused.
1215 * - private5 is the node.
1218 /* This should never fail. */
1219 RUNTIME_CHECK(dns_rdatalist_tordataset(rdatalist
, rdataset
) ==
1222 rdataset
->methods
= &rdataset_methods
;
1223 dns_db_attachnode(db
, node
, &rdataset
->private5
);
1227 * SDLZ core methods. This is the core of the new DLZ functionality.
1231 * Build a 'bind' database driver structure to be returned by
1232 * either the find zone or the allow zone transfer method.
1233 * This method is only available in this source file, it is
1234 * not made available anywhere else.
1238 dns_sdlzcreateDBP(isc_mem_t
*mctx
, void *driverarg
, void *dbdata
,
1239 dns_name_t
*name
, dns_rdataclass_t rdclass
, dns_db_t
**dbp
)
1241 isc_result_t result
;
1242 dns_sdlz_db_t
*sdlzdb
;
1243 dns_sdlzimplementation_t
*imp
;
1245 /* check that things are as we expect */
1246 REQUIRE(dbp
!= NULL
&& *dbp
== NULL
);
1247 REQUIRE(name
!= NULL
);
1249 imp
= (dns_sdlzimplementation_t
*) driverarg
;
1251 /* allocate and zero memory for driver structure */
1252 sdlzdb
= isc_mem_get(mctx
, sizeof(dns_sdlz_db_t
));
1254 return (ISC_R_NOMEMORY
);
1255 memset(sdlzdb
, 0, sizeof(dns_sdlz_db_t
));
1257 /* initialize and set origin */
1258 dns_name_init(&sdlzdb
->common
.origin
, NULL
);
1259 result
= dns_name_dupwithoffsets(name
, mctx
, &sdlzdb
->common
.origin
);
1260 if (result
!= ISC_R_SUCCESS
)
1263 /* initialize the reference count mutex */
1264 result
= isc_mutex_init(&sdlzdb
->refcnt_lock
);
1265 if (result
!= ISC_R_SUCCESS
)
1268 /* set the rest of the database structure attributes */
1269 sdlzdb
->dlzimp
= imp
;
1270 sdlzdb
->common
.methods
= &sdlzdb_methods
;
1271 sdlzdb
->common
.attributes
= 0;
1272 sdlzdb
->common
.rdclass
= rdclass
;
1273 sdlzdb
->common
.mctx
= NULL
;
1274 sdlzdb
->dbdata
= dbdata
;
1275 sdlzdb
->references
= 1;
1277 /* attach to the memory context */
1278 isc_mem_attach(mctx
, &sdlzdb
->common
.mctx
);
1280 /* mark structure as valid */
1281 sdlzdb
->common
.magic
= DNS_DB_MAGIC
;
1282 sdlzdb
->common
.impmagic
= SDLZDB_MAGIC
;
1283 *dbp
= (dns_db_t
*) sdlzdb
;
1288 * reference count mutex could not be initialized, clean up
1292 dns_name_free(&sdlzdb
->common
.origin
, mctx
);
1294 isc_mem_put(mctx
, sdlzdb
, sizeof(dns_sdlz_db_t
));
1299 dns_sdlzallowzonexfr(void *driverarg
, void *dbdata
, isc_mem_t
*mctx
,
1300 dns_rdataclass_t rdclass
, dns_name_t
*name
,
1301 isc_sockaddr_t
*clientaddr
, dns_db_t
**dbp
)
1305 char namestr
[DNS_NAME_MAXTEXT
+ 1];
1306 char clientstr
[(sizeof "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255")
1308 isc_netaddr_t netaddr
;
1309 isc_result_t result
;
1310 dns_sdlzimplementation_t
*imp
;
1313 * Perform checks to make sure data is as we expect it to be.
1315 REQUIRE(driverarg
!= NULL
);
1316 REQUIRE(name
!= NULL
);
1317 REQUIRE(clientaddr
!= NULL
);
1318 REQUIRE(dbp
!= NULL
&& *dbp
== NULL
);
1320 imp
= (dns_sdlzimplementation_t
*) driverarg
;
1322 /* Convert DNS name to ascii text */
1323 isc_buffer_init(&b
, namestr
, sizeof(namestr
));
1324 result
= dns_name_totext(name
, ISC_TRUE
, &b
);
1325 if (result
!= ISC_R_SUCCESS
)
1327 isc_buffer_putuint8(&b
, 0);
1329 /* convert client address to ascii text */
1330 isc_buffer_init(&b2
, clientstr
, sizeof(clientstr
));
1331 isc_netaddr_fromsockaddr(&netaddr
, clientaddr
);
1332 result
= isc_netaddr_totext(&netaddr
, &b2
);
1333 if (result
!= ISC_R_SUCCESS
)
1335 isc_buffer_putuint8(&b2
, 0);
1337 /* make sure strings are always lowercase */
1338 dns_sdlz_tolower(namestr
);
1339 dns_sdlz_tolower(clientstr
);
1341 /* Call SDLZ driver's find zone method */
1342 if (imp
->methods
->allowzonexfr
!= NULL
) {
1344 result
= imp
->methods
->allowzonexfr(imp
->driverarg
, dbdata
,
1345 namestr
, clientstr
);
1348 * if zone is supported and transfers allowed build a 'bind'
1351 if (result
== ISC_R_SUCCESS
)
1352 result
= dns_sdlzcreateDBP(mctx
, driverarg
, dbdata
,
1353 name
, rdclass
, dbp
);
1357 return (ISC_R_NOTIMPLEMENTED
);
1361 dns_sdlzcreate(isc_mem_t
*mctx
, const char *dlzname
, unsigned int argc
,
1362 char *argv
[], void *driverarg
, void **dbdata
)
1364 dns_sdlzimplementation_t
*imp
;
1365 isc_result_t result
= ISC_R_NOTFOUND
;
1367 /* Write debugging message to log */
1368 isc_log_write(dns_lctx
, DNS_LOGCATEGORY_DATABASE
,
1369 DNS_LOGMODULE_DLZ
, ISC_LOG_DEBUG(2),
1370 "Loading SDLZ driver.");
1373 * Performs checks to make sure data is as we expect it to be.
1375 REQUIRE(driverarg
!= NULL
);
1376 REQUIRE(dlzname
!= NULL
);
1377 REQUIRE(dbdata
!= NULL
);
1382 /* If the create method exists, call it. */
1383 if (imp
->methods
->create
!= NULL
) {
1385 result
= imp
->methods
->create(dlzname
, argc
, argv
,
1386 imp
->driverarg
, dbdata
);
1390 /* Write debugging message to log */
1391 if (result
== ISC_R_SUCCESS
) {
1392 isc_log_write(dns_lctx
, DNS_LOGCATEGORY_DATABASE
,
1393 DNS_LOGMODULE_DLZ
, ISC_LOG_DEBUG(2),
1394 "SDLZ driver loaded successfully.");
1396 isc_log_write(dns_lctx
, DNS_LOGCATEGORY_DATABASE
,
1397 DNS_LOGMODULE_DLZ
, ISC_LOG_ERROR
,
1398 "SDLZ driver failed to load.");
1405 dns_sdlzdestroy(void *driverdata
, void **dbdata
)
1408 dns_sdlzimplementation_t
*imp
;
1410 /* Write debugging message to log */
1411 isc_log_write(dns_lctx
, DNS_LOGCATEGORY_DATABASE
,
1412 DNS_LOGMODULE_DLZ
, ISC_LOG_DEBUG(2),
1413 "Unloading SDLZ driver.");
1417 /* If the destroy method exists, call it. */
1418 if (imp
->methods
->destroy
!= NULL
) {
1420 imp
->methods
->destroy(imp
->driverarg
, dbdata
);
1426 dns_sdlzfindzone(void *driverarg
, void *dbdata
, isc_mem_t
*mctx
,
1427 dns_rdataclass_t rdclass
, dns_name_t
*name
, dns_db_t
**dbp
)
1430 char namestr
[DNS_NAME_MAXTEXT
+ 1];
1431 isc_result_t result
;
1432 dns_sdlzimplementation_t
*imp
;
1435 * Perform checks to make sure data is as we expect it to be.
1437 REQUIRE(driverarg
!= NULL
);
1438 REQUIRE(name
!= NULL
);
1439 REQUIRE(dbp
!= NULL
&& *dbp
== NULL
);
1441 imp
= (dns_sdlzimplementation_t
*) driverarg
;
1443 /* Convert DNS name to ascii text */
1444 isc_buffer_init(&b
, namestr
, sizeof(namestr
));
1445 result
= dns_name_totext(name
, ISC_TRUE
, &b
);
1446 if (result
!= ISC_R_SUCCESS
)
1448 isc_buffer_putuint8(&b
, 0);
1450 /* make sure strings are always lowercase */
1451 dns_sdlz_tolower(namestr
);
1453 /* Call SDLZ driver's find zone method */
1455 result
= imp
->methods
->findzone(imp
->driverarg
, dbdata
, namestr
);
1459 * if zone is supported build a 'bind' database driver
1460 * structure to return
1462 if (result
== ISC_R_SUCCESS
)
1463 result
= dns_sdlzcreateDBP(mctx
, driverarg
, dbdata
, name
,
1469 static dns_dlzmethods_t sdlzmethods
= {
1473 dns_sdlzallowzonexfr
1481 dns_sdlz_putrr(dns_sdlzlookup_t
*lookup
, const char *type
, dns_ttl_t ttl
,
1484 dns_rdatalist_t
*rdatalist
;
1486 dns_rdatatype_t typeval
;
1487 isc_consttextregion_t r
;
1489 isc_buffer_t
*rdatabuf
= NULL
;
1491 isc_result_t result
;
1496 REQUIRE(VALID_SDLZLOOKUP(lookup
));
1497 REQUIRE(type
!= NULL
);
1498 REQUIRE(data
!= NULL
);
1500 mctx
= lookup
->sdlz
->common
.mctx
;
1503 r
.length
= strlen(type
);
1504 result
= dns_rdatatype_fromtext(&typeval
, (void *) &r
);
1505 if (result
!= ISC_R_SUCCESS
)
1508 rdatalist
= ISC_LIST_HEAD(lookup
->lists
);
1509 while (rdatalist
!= NULL
) {
1510 if (rdatalist
->type
== typeval
)
1512 rdatalist
= ISC_LIST_NEXT(rdatalist
, link
);
1515 if (rdatalist
== NULL
) {
1516 rdatalist
= isc_mem_get(mctx
, sizeof(dns_rdatalist_t
));
1517 if (rdatalist
== NULL
)
1518 return (ISC_R_NOMEMORY
);
1519 rdatalist
->rdclass
= lookup
->sdlz
->common
.rdclass
;
1520 rdatalist
->type
= typeval
;
1521 rdatalist
->covers
= 0;
1522 rdatalist
->ttl
= ttl
;
1523 ISC_LIST_INIT(rdatalist
->rdata
);
1524 ISC_LINK_INIT(rdatalist
, link
);
1525 ISC_LIST_APPEND(lookup
->lists
, rdatalist
, link
);
1527 if (rdatalist
->ttl
!= ttl
)
1528 return (DNS_R_BADTTL
);
1530 rdata
= isc_mem_get(mctx
, sizeof(dns_rdata_t
));
1532 return (ISC_R_NOMEMORY
);
1533 dns_rdata_init(rdata
);
1535 if ((lookup
->sdlz
->dlzimp
->flags
& DNS_SDLZFLAG_RELATIVERDATA
) != 0)
1536 origin
= &lookup
->sdlz
->common
.origin
;
1538 origin
= dns_rootname
;
1541 result
= isc_lex_create(mctx
, 64, &lex
);
1542 if (result
!= ISC_R_SUCCESS
)
1545 size
= initial_size(data
);
1547 isc_buffer_init(&b
, data
, strlen(data
));
1548 isc_buffer_add(&b
, strlen(data
));
1550 result
= isc_lex_openbuffer(lex
, &b
);
1551 if (result
!= ISC_R_SUCCESS
)
1555 result
= isc_buffer_allocate(mctx
, &rdatabuf
, size
);
1556 if (result
!= ISC_R_SUCCESS
)
1559 result
= dns_rdata_fromtext(rdata
, rdatalist
->rdclass
,
1560 rdatalist
->type
, lex
,
1563 &lookup
->callbacks
);
1564 if (result
!= ISC_R_SUCCESS
)
1565 isc_buffer_free(&rdatabuf
);
1567 } while (result
== ISC_R_NOSPACE
);
1569 if (result
!= ISC_R_SUCCESS
)
1572 ISC_LIST_APPEND(rdatalist
->rdata
, rdata
, link
);
1573 ISC_LIST_APPEND(lookup
->buffers
, rdatabuf
, link
);
1576 isc_lex_destroy(&lex
);
1578 return (ISC_R_SUCCESS
);
1581 if (rdatabuf
!= NULL
)
1582 isc_buffer_free(&rdatabuf
);
1584 isc_lex_destroy(&lex
);
1585 isc_mem_put(mctx
, rdata
, sizeof(dns_rdata_t
));
1591 dns_sdlz_putnamedrr(dns_sdlzallnodes_t
*allnodes
, const char *name
,
1592 const char *type
, dns_ttl_t ttl
, const char *data
)
1594 dns_name_t
*newname
, *origin
;
1595 dns_fixedname_t fnewname
;
1596 dns_sdlz_db_t
*sdlz
= (dns_sdlz_db_t
*)allnodes
->common
.db
;
1597 dns_sdlznode_t
*sdlznode
;
1598 isc_mem_t
*mctx
= sdlz
->common
.mctx
;
1600 isc_result_t result
;
1602 dns_fixedname_init(&fnewname
);
1603 newname
= dns_fixedname_name(&fnewname
);
1605 if ((sdlz
->dlzimp
->flags
& DNS_SDLZFLAG_RELATIVERDATA
) != 0)
1606 origin
= &sdlz
->common
.origin
;
1608 origin
= dns_rootname
;
1609 isc_buffer_init(&b
, name
, strlen(name
));
1610 isc_buffer_add(&b
, strlen(name
));
1612 result
= dns_name_fromtext(newname
, &b
, origin
, ISC_FALSE
, NULL
);
1613 if (result
!= ISC_R_SUCCESS
)
1616 if (allnodes
->common
.relative_names
) {
1617 /* All names are relative to the root */
1618 unsigned int nlabels
= dns_name_countlabels(newname
);
1619 dns_name_getlabelsequence(newname
, 0, nlabels
- 1, newname
);
1622 sdlznode
= ISC_LIST_HEAD(allnodes
->nodelist
);
1623 if (sdlznode
== NULL
|| !dns_name_equal(sdlznode
->name
, newname
)) {
1625 result
= createnode(sdlz
, &sdlznode
);
1626 if (result
!= ISC_R_SUCCESS
)
1628 sdlznode
->name
= isc_mem_get(mctx
, sizeof(dns_name_t
));
1629 if (sdlznode
->name
== NULL
) {
1630 destroynode(sdlznode
);
1631 return (ISC_R_NOMEMORY
);
1633 dns_name_init(sdlznode
->name
, NULL
);
1634 result
= dns_name_dup(newname
, mctx
, sdlznode
->name
);
1635 if (result
!= ISC_R_SUCCESS
) {
1636 isc_mem_put(mctx
, sdlznode
->name
, sizeof(dns_name_t
));
1637 destroynode(sdlznode
);
1640 ISC_LIST_PREPEND(allnodes
->nodelist
, sdlznode
, link
);
1641 if (allnodes
->origin
== NULL
&&
1642 dns_name_equal(newname
, &sdlz
->common
.origin
))
1643 allnodes
->origin
= sdlznode
;
1645 return (dns_sdlz_putrr(sdlznode
, type
, ttl
, data
));
1650 dns_sdlz_putsoa(dns_sdlzlookup_t
*lookup
, const char *mname
, const char *rname
,
1651 isc_uint32_t serial
)
1653 char str
[2 * DNS_NAME_MAXTEXT
+ 5 * (sizeof("2147483647")) + 7];
1656 REQUIRE(mname
!= NULL
);
1657 REQUIRE(rname
!= NULL
);
1659 n
= snprintf(str
, sizeof str
, "%s %s %u %u %u %u %u",
1660 mname
, rname
, serial
,
1661 SDLZ_DEFAULT_REFRESH
, SDLZ_DEFAULT_RETRY
,
1662 SDLZ_DEFAULT_EXPIRE
, SDLZ_DEFAULT_MINIMUM
);
1663 if (n
>= (int)sizeof(str
) || n
< 0)
1664 return (ISC_R_NOSPACE
);
1665 return (dns_sdlz_putrr(lookup
, "SOA", SDLZ_DEFAULT_TTL
, str
));
1669 dns_sdlzregister(const char *drivername
, const dns_sdlzmethods_t
*methods
,
1670 void *driverarg
, unsigned int flags
, isc_mem_t
*mctx
,
1671 dns_sdlzimplementation_t
**sdlzimp
)
1674 dns_sdlzimplementation_t
*imp
;
1675 isc_result_t result
;
1678 * Performs checks to make sure data is as we expect it to be.
1680 REQUIRE(drivername
!= NULL
);
1681 REQUIRE(methods
!= NULL
);
1682 REQUIRE(methods
->findzone
!= NULL
);
1683 REQUIRE(methods
->lookup
!= NULL
);
1684 REQUIRE(mctx
!= NULL
);
1685 REQUIRE(sdlzimp
!= NULL
&& *sdlzimp
== NULL
);
1686 REQUIRE((flags
& ~(DNS_SDLZFLAG_RELATIVEOWNER
|
1687 DNS_SDLZFLAG_RELATIVERDATA
|
1688 DNS_SDLZFLAG_THREADSAFE
)) == 0);
1690 /* Write debugging message to log */
1691 isc_log_write(dns_lctx
, DNS_LOGCATEGORY_DATABASE
,
1692 DNS_LOGMODULE_DLZ
, ISC_LOG_DEBUG(2),
1693 "Registering SDLZ driver '%s'", drivername
);
1696 * Allocate memory for a sdlz_implementation object. Error if
1699 imp
= isc_mem_get(mctx
, sizeof(dns_sdlzimplementation_t
));
1701 return (ISC_R_NOMEMORY
);
1703 /* Make sure memory region is set to all 0's */
1704 memset(imp
, 0, sizeof(dns_sdlzimplementation_t
));
1706 /* Store the data passed into this method */
1707 imp
->methods
= methods
;
1708 imp
->driverarg
= driverarg
;
1712 /* attach the new sdlz_implementation object to a memory context */
1713 isc_mem_attach(mctx
, &imp
->mctx
);
1716 * initialize the driver lock, error if we cannot
1717 * (used if a driver does not support multiple threads)
1719 result
= isc_mutex_init(&imp
->driverlock
);
1720 if (result
!= ISC_R_SUCCESS
) {
1721 UNEXPECTED_ERROR(__FILE__
, __LINE__
,
1722 "isc_mutex_init() failed: %s",
1723 isc_result_totext(result
));
1727 imp
->dlz_imp
= NULL
;
1730 * register the DLZ driver. Pass in our "extra" sdlz information as
1731 * a driverarg. (that's why we stored the passed in driver arg in our
1732 * sdlz_implementation structure) Also, store the dlz_implementation
1733 * structure in our sdlz_implementation.
1735 result
= dns_dlzregister(drivername
, &sdlzmethods
, imp
, mctx
,
1738 /* if registration fails, cleanup and get outta here. */
1739 if (result
!= ISC_R_SUCCESS
)
1744 return (ISC_R_SUCCESS
);
1747 /* destroy the driver lock, we don't need it anymore */
1748 DESTROYLOCK(&imp
->driverlock
);
1752 * return the memory back to the available memory pool and
1753 * remove it from the memory context.
1755 isc_mem_put(mctx
, imp
, sizeof(dns_sdlzimplementation_t
));
1756 isc_mem_detach(&mctx
);
1761 dns_sdlzunregister(dns_sdlzimplementation_t
**sdlzimp
) {
1762 dns_sdlzimplementation_t
*imp
;
1765 /* Write debugging message to log */
1766 isc_log_write(dns_lctx
, DNS_LOGCATEGORY_DATABASE
,
1767 DNS_LOGMODULE_DLZ
, ISC_LOG_DEBUG(2),
1768 "Unregistering SDLZ driver.");
1771 * Performs checks to make sure data is as we expect it to be.
1773 REQUIRE(sdlzimp
!= NULL
&& *sdlzimp
!= NULL
);
1777 /* Unregister the DLZ driver implementation */
1778 dns_dlzunregister(&imp
->dlz_imp
);
1780 /* destroy the driver lock, we don't need it anymore */
1781 DESTROYLOCK(&imp
->driverlock
);
1786 * return the memory back to the available memory pool and
1787 * remove it from the memory context.
1789 isc_mem_put(mctx
, imp
, sizeof(dns_sdlzimplementation_t
));
1790 isc_mem_detach(&mctx
);