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Soft : LiteSpeed
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Port : 443

File Name : ncache.h

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef DNS_NCACHE_H
#define DNS_NCACHE_H 1

/*****
***** Module Info
*****/

/*! \file dns/ncache.h
 *\brief
 * DNS Ncache
 *
 * XXX TBS XXX
 *
 * MP:
 *\li	The caller must ensure any required synchronization.
 *
 * Reliability:
 *\li	No anticipated impact.
 *
 * Resources:
 *\li	TBS
 *
 * Security:
 *\li	No anticipated impact.
 *
 * Standards:
 *\li	RFC2308
 */

#include <stdbool.h>

#include <isc/lang.h>
#include <isc/stdtime.h>

#include <dns/types.h>

ISC_LANG_BEGINDECLS

/*%
 * _OMITDNSSEC:
 *      Omit DNSSEC records when rendering.
 */
#define DNS_NCACHETOWIRE_OMITDNSSEC 0x0001

isc_result_t
dns_ncache_add(dns_message_t *message, dns_db_t *cache, dns_dbnode_t *node,
	       dns_rdatatype_t covers, isc_stdtime_t now, dns_ttl_t minttl,
	       dns_ttl_t maxttl, dns_rdataset_t *addedrdataset);
isc_result_t
dns_ncache_addoptout(dns_message_t *message, dns_db_t *cache,
		     dns_dbnode_t *node, dns_rdatatype_t covers,
		     isc_stdtime_t now, dns_ttl_t minttl, dns_ttl_t maxttl,
		     bool optout, dns_rdataset_t *addedrdataset);
/*%<
 * Convert the authority data from 'message' into a negative cache
 * rdataset, and store it in 'cache' at 'node' with a TTL limited to
 * 'maxttl'.
 *
 * \li dns_ncache_add produces a negative cache entry with a trust of no
 *     more than answer
 * \li dns_ncache_addoptout produces a negative cache entry which will have
 *     a trust of secure if all the records that make up the entry are secure.
 *
 * The 'covers' argument is the RR type whose nonexistence we are caching,
 * or dns_rdatatype_any when caching a NXDOMAIN response.
 *
 * 'optout' indicates a DNS_RDATASETATTR_OPTOUT should be set.
 *
 * Note:
 *\li	If 'addedrdataset' is not NULL, then it will be attached to the added
 *	rdataset.  See dns_db_addrdataset() for more details.
 *
 * Requires:
 *\li	'message' is a valid message with a properly formatting negative cache
 *	authority section.
 *
 *\li	The requirements of dns_db_addrdataset() apply to 'cache', 'node',
 *	'now', and 'addedrdataset'.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_NOSPACE
 *
 *\li	Any result code of dns_db_addrdataset() is a possible result code
 *	of dns_ncache_add().
 */

isc_result_t
dns_ncache_towire(dns_rdataset_t *rdataset, dns_compress_t *cctx,
		  isc_buffer_t *target, unsigned int options,
		  unsigned int *countp);
/*%<
 * Convert the negative caching rdataset 'rdataset' to wire format,
 * compressing names as specified in 'cctx', and storing the result in
 * 'target'.  If 'omit_dnssec' is set, DNSSEC records will not
 * be added to 'target'.
 *
 * Notes:
 *\li	The number of RRs added to target will be added to *countp.
 *
 * Requires:
 *\li	'rdataset' is a valid negative caching rdataset.
 *
 *\li	'rdataset' is not empty.
 *
 *\li	'countp' is a valid pointer.
 *
 * Ensures:
 *\li	On a return of ISC_R_SUCCESS, 'target' contains a wire format
 *	for the data contained in 'rdataset'.  Any error return leaves
 *	the buffer unchanged.
 *
 *\li	*countp has been incremented by the number of RRs added to
 *	target.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS		- all ok
 *\li	#ISC_R_NOSPACE		- 'target' doesn't have enough room
 *
 *\li	Any error returned by dns_rdata_towire(), dns_rdataset_next(),
 *	dns_name_towire().
 */

isc_result_t
dns_ncache_getrdataset(dns_rdataset_t *ncacherdataset, dns_name_t *name,
		       dns_rdatatype_t type, dns_rdataset_t *rdataset);
/*%<
 * Search the negative caching rdataset for an rdataset with the
 * specified name and type.
 *
 * Requires:
 *\li	'ncacherdataset' is a valid negative caching rdataset.
 *
 *\li	'ncacherdataset' is not empty.
 *
 *\li	'name' is a valid name.
 *
 *\li	'type' is not SIG, or a meta-RR type.
 *
 *\li	'rdataset' is a valid disassociated rdataset.
 *
 * Ensures:
 *\li	On a return of ISC_R_SUCCESS, 'rdataset' is bound to the found
 *	rdataset.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS		- the rdataset was found.
 *\li	#ISC_R_NOTFOUND		- the rdataset was not found.
 *
 */

isc_result_t
dns_ncache_getsigrdataset(dns_rdataset_t *ncacherdataset, dns_name_t *name,
			  dns_rdatatype_t covers, dns_rdataset_t *rdataset);
/*%<
 * Similar to dns_ncache_getrdataset() but get the rrsig that matches.
 */

void
dns_ncache_current(dns_rdataset_t *ncacherdataset, dns_name_t *found,
		   dns_rdataset_t *rdataset);

/*%<
 * Extract the current rdataset and name from a ncache entry.
 *
 * Requires:
 * \li	'ncacherdataset' to be valid and to be a negative cache entry
 * \li	'found' to be valid.
 * \li	'rdataset' to be unassociated.
 */

ISC_LANG_ENDDECLS

#endif /* DNS_NCACHE_H */

Name	Type	Size	Permission	Last Modified	Actions
.	dir	-	0755	2025-11-16 07:57:27
..	dir	-	0755	2025-11-16 07:57:27
acl.h	file	6.33 KB	0644	2021-11-05 09:03:26
adb.h	file	21.75 KB	0644	2021-11-05 09:03:26
badcache.h	file	3.31 KB	0644	2021-11-05 09:03:26
bit.h	file	798 B	0644	2021-11-05 09:03:26
byaddr.h	file	3.51 KB	0644	2021-11-05 09:03:26
cache.h	file	8.53 KB	0644	2025-11-10 03:33:48
callbacks.h	file	2.23 KB	0644	2021-11-05 09:03:26
catz.h	file	11.6 KB	0644	2021-11-05 09:03:26
cert.h	file	1.43 KB	0644	2021-11-05 09:03:26
client.h	file	14.19 KB	0644	2021-11-05 09:03:26
clientinfo.h	file	1.97 KB	0644	2021-11-05 09:03:26
compress.h	file	6.88 KB	0644	2021-11-05 09:03:26
db.h	file	49.26 KB	0644	2025-11-10 03:33:48
dbiterator.h	file	7.21 KB	0644	2021-11-05 09:03:26
dbtable.h	file	3.09 KB	0644	2021-11-05 09:03:26
diff.h	file	6.87 KB	0644	2021-11-05 09:03:26
dispatch.h	file	15.17 KB	0644	2021-11-05 09:03:26
dlz.h	file	10.62 KB	0644	2021-11-05 09:03:26
dlz_dlopen.h	file	4.29 KB	0644	2021-11-05 09:03:26
dns64.h	file	5.59 KB	0644	2021-11-05 09:03:26
dnsrps.h	file	2.51 KB	0644	2021-11-05 09:03:26
dnssec.h	file	12.29 KB	0644	2021-11-05 09:03:26
dnstap.h	file	9.95 KB	0644	2021-11-05 09:03:26
ds.h	file	1.63 KB	0644	2021-11-05 09:03:26
dsdigest.h	file	1.67 KB	0644	2021-11-05 09:03:26
dyndb.h	file	4.75 KB	0644	2021-11-05 09:03:26
ecdb.h	file	806 B	0644	2021-11-05 09:03:26
ecs.h	file	1.22 KB	0644	2021-11-05 09:03:26
edns.h	file	783 B	0644	2021-11-05 09:03:26
enumclass.h	file	1.19 KB	0644	2025-11-10 03:34:13
enumtype.h	file	8.29 KB	0644	2025-11-10 03:34:13
events.h	file	4.35 KB	0644	2021-11-05 09:03:26
fixedname.h	file	1.61 KB	0644	2021-11-05 09:03:26
forward.h	file	2.99 KB	0644	2021-11-05 09:03:26
geoip.h	file	2.29 KB	0644	2021-11-05 09:03:26
ipkeylist.h	file	2.17 KB	0644	2021-11-05 09:03:26
iptable.h	file	1.49 KB	0644	2021-11-05 09:03:26
journal.h	file	9.48 KB	0644	2021-11-05 09:03:26
kasp.h	file	11.84 KB	0644	2021-11-05 09:03:26
keydata.h	file	1.02 KB	0644	2021-11-05 09:03:26
keyflags.h	file	1.25 KB	0644	2021-11-05 09:03:26
keymgr.h	file	4.01 KB	0644	2021-11-05 09:03:26
keytable.h	file	7.69 KB	0644	2021-11-05 09:03:26
keyvalues.h	file	3.99 KB	0644	2021-11-05 09:03:26
lib.h	file	993 B	0644	2021-11-05 09:03:26
librpz.h	file	30.67 KB	0644	2021-11-05 09:03:26
lmdb.h	file	779 B	0644	2021-11-05 09:03:26
log.h	file	3.93 KB	0644	2021-11-05 09:03:26
lookup.h	file	2.85 KB	0644	2021-11-05 09:03:26
master.h	file	8.58 KB	0644	2021-11-05 09:03:26
masterdump.h	file	9.9 KB	0644	2021-11-05 09:03:26
message.h	file	38.64 KB	0644	2025-11-10 03:33:48
name.h	file	36.9 KB	0644	2025-11-10 03:33:48
ncache.h	file	4.84 KB	0644	2021-11-05 09:03:26
nsec.h	file	2.99 KB	0644	2021-11-05 09:03:26
nsec3.h	file	8.06 KB	0644	2021-11-05 09:03:26
nta.h	file	4.73 KB	0644	2021-11-05 09:03:26
opcode.h	file	1006 B	0644	2021-11-05 09:03:26
order.h	file	1.96 KB	0644	2021-11-05 09:03:26
peer.h	file	6.32 KB	0644	2021-11-05 09:03:26
portlist.h	file	2.05 KB	0644	2021-11-05 09:03:26
private.h	file	1.92 KB	0644	2021-11-05 09:03:26
rbt.h	file	36.61 KB	0644	2025-11-10 03:33:48
rcode.h	file	2.41 KB	0644	2021-11-05 09:03:26
rdata.h	file	22.04 KB	0644	2021-11-05 09:03:26
rdataclass.h	file	2.2 KB	0644	2021-11-05 09:03:26
rdatalist.h	file	2.5 KB	0644	2021-11-05 09:03:26
rdataset.h	file	18.28 KB	0644	2025-11-10 03:33:48
rdatasetiter.h	file	3.82 KB	0644	2021-11-05 09:03:26
rdataslab.h	file	4.14 KB	0644	2025-11-10 03:33:48
rdatastruct.h	file	61.23 KB	0644	2025-11-10 03:34:13
rdatatype.h	file	2.24 KB	0644	2021-11-05 09:03:26
request.h	file	8.97 KB	0644	2021-11-05 09:03:26
resolver.h	file	19.68 KB	0644	2021-11-05 09:03:26
result.h	file	8.98 KB	0644	2021-11-05 09:03:26
rootns.h	file	891 B	0644	2021-11-05 09:03:26
rpz.h	file	11.87 KB	0644	2021-11-05 09:03:26
rriterator.h	file	4.12 KB	0644	2021-11-05 09:03:26
rrl.h	file	6.8 KB	0644	2021-11-05 09:03:26
sdb.h	file	7.18 KB	0644	2021-11-05 09:03:26
sdlz.h	file	13.76 KB	0644	2021-11-05 09:03:26
secalg.h	file	1.67 KB	0644	2021-11-05 09:03:26
secproto.h	file	1.52 KB	0644	2021-11-05 09:03:26
soa.h	file	2.13 KB	0644	2021-11-05 09:03:26
ssu.h	file	7.01 KB	0644	2021-11-05 09:03:26
stats.h	file	24.11 KB	0644	2021-11-05 09:03:26
tcpmsg.h	file	3.05 KB	0644	2021-11-05 09:03:26
time.h	file	1.65 KB	0644	2021-11-05 09:03:26
timer.h	file	1.03 KB	0644	2021-11-05 09:03:26
tkey.h	file	7.48 KB	0644	2021-11-05 09:03:26
tsec.h	file	2.88 KB	0644	2021-11-05 09:03:26
tsig.h	file	8.3 KB	0644	2021-11-05 09:03:26
ttl.h	file	1.83 KB	0644	2021-11-05 09:03:26
types.h	file	14.19 KB	0644	2021-11-05 09:03:26
update.h	file	1.96 KB	0644	2021-11-05 09:03:26
validator.h	file	6.52 KB	0644	2025-11-10 03:33:48
version.h	file	679 B	0644	2021-11-05 09:03:26
view.h	file	34.51 KB	0644	2025-11-10 03:33:48
xfrin.h	file	2.26 KB	0644	2021-11-05 09:03:26
zone.h	file	64.01 KB	0644	2025-11-10 03:33:48
zonekey.h	file	776 B	0644	2021-11-05 09:03:26
zoneverify.h	file	1.36 KB	0644	2021-11-05 09:03:26
zt.h	file	5.12 KB	0644	2025-11-10 03:33:48