nsec.h revision 93d6dfaf66258337985427c86181f01fc51f0bb4
/*
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: nsec.h,v 1.2 2003/09/30 06:00:39 marka Exp $ */
#ifndef DNS_NSEC_H
#define DNS_NSEC_H 1
#include <isc/lang.h>
#include <dns/types.h>
#define DNS_NSEC_BUFFERSIZE (256 + 16)
ISC_LANG_BEGINDECLS
isc_result_t
dns_nsec_buildrdata(dns_db_t *db, dns_dbversion_t *version,
dns_dbnode_t *node, dns_name_t *target,
unsigned char *buffer, dns_rdata_t *rdata);
/*
* Build the rdata of a NSEC record.
*
* Requires:
* buffer Points to a temporary buffer of at least
* DNS_NSEC_BUFFERSIZE bytes.
* rdata Points to an initialized dns_rdata_t.
*
* Ensures:
* *rdata Contains a valid NSEC rdata. The 'data' member refers
* to 'buffer'.
*/
isc_result_t
dns_nsec_build(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node,
dns_name_t *target, dns_ttl_t ttl);
/*
* Build a NSEC record and add it to a database.
*/
isc_boolean_t
dns_nsec_typepresent(dns_rdata_t *nsec, dns_rdatatype_t type);
/*
* Determine if a type is marked as present in an NSEC record.
*
* Requires:
* 'nsec' points to a valid rdataset of type NSEC
* 'type' < 128
*
*/
ISC_LANG_ENDDECLS
#endif /* DNS_NSEC_H */