81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* Copyright (C) 2004-2008 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1999-2001, 2003 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: nsec.h,v 1.12 2008/09/25 04:02:39 tbox Exp $ */
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#ifndef DNS_NSEC_H
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#define DNS_NSEC_H 1
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/*! \file dns/nsec.h */
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#include <isc/lang.h>
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#include <dns/types.h>
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#include <dns/name.h>
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#define DNS_NSEC_BUFFERSIZE (DNS_NAME_MAXWIRE + 8192 + 512)
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ISC_LANG_BEGINDECLS
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isc_result_t
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dns_nsec_buildrdata(dns_db_t *db, dns_dbversion_t *version,
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dns_dbnode_t *node, dns_name_t *target,
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unsigned char *buffer, dns_rdata_t *rdata);
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/*%<
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* Build the rdata of a NSEC record.
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*
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* Requires:
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*\li buffer Points to a temporary buffer of at least
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* DNS_NSEC_BUFFERSIZE bytes.
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*\li rdata Points to an initialized dns_rdata_t.
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*
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* Ensures:
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* \li *rdata Contains a valid NSEC rdata. The 'data' member refers
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* to 'buffer'.
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*/
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isc_result_t
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dns_nsec_build(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node,
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dns_name_t *target, dns_ttl_t ttl);
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/*%<
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* Build a NSEC record and add it to a database.
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*/
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isc_boolean_t
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dns_nsec_typepresent(dns_rdata_t *nsec, dns_rdatatype_t type);
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/*%<
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* Determine if a type is marked as present in an NSEC record.
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*
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* Requires:
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*\li 'nsec' points to a valid rdataset of type NSEC
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*/
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isc_result_t
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dns_nsec_nseconly(dns_db_t *db, dns_dbversion_t *version,
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isc_boolean_t *answer);
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/*
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* Report whether the DNSKEY RRset has a NSEC only algorithm. Unknown
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* algorithms are assumed to support NSEC3.
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*
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* Requires:
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* 'answer' to be non NULL.
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*/
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ISC_LANG_ENDDECLS
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#endif /* DNS_NSEC_H */
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