/*

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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")

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*

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* This Source Code Form is subject to the terms of the Mozilla Public

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* License, v. 2.0. If a copy of the MPL was not distributed with this

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* file, you can obtain one at https://mozilla.org/MPL/2.0/.

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*

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* See the COPYRIGHT file distributed with this work for additional

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* information regarding copyright ownership.

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*/

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#ifndef DNS_SOA_H

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#define DNS_SOA_H 1

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/*****

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***** Module Info

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*****/

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/*! \file dns/soa.h

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* \brief

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* SOA utilities.

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*/

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/***

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*** Imports

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***/

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#include <inttypes.h>

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#include <isc/lang.h>

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#include <isc/types.h>

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#include <dns/types.h>

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ISC_LANG_BEGINDECLS

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#define DNS_SOA_BUFFERSIZE ((2 * DNS_NAME_MAXWIRE) + (4 * 5))

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isc_result_t

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dns_soa_buildrdata(dns_name_t *origin, dns_name_t *contact,

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dns_rdataclass_t rdclass,

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uint32_t serial, uint32_t refresh,

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uint32_t retry, uint32_t expire,

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uint32_t minimum, unsigned char *buffer,

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dns_rdata_t *rdata);

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/*%<

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* Build the rdata of an SOA 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_SOA_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 SOA rdata. The 'data' member

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* refers to 'buffer'.

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*/

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uint32_t

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dns_soa_getserial(dns_rdata_t *rdata);

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uint32_t

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dns_soa_getrefresh(dns_rdata_t *rdata);

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uint32_t

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dns_soa_getretry(dns_rdata_t *rdata);

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uint32_t

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dns_soa_getexpire(dns_rdata_t *rdata);

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uint32_t

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dns_soa_getminimum(dns_rdata_t *rdata);

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/*

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* Extract an integer field from the rdata of a SOA record.

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*

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* Requires:

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* rdata refers to the rdata of a well-formed SOA record.

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*/

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void

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dns_soa_setserial(uint32_t val, dns_rdata_t *rdata);

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void

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dns_soa_setrefresh(uint32_t val, dns_rdata_t *rdata);

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void

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dns_soa_setretry(uint32_t val, dns_rdata_t *rdata);

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void

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dns_soa_setexpire(uint32_t val, dns_rdata_t *rdata);

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void

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dns_soa_setminimum(uint32_t val, dns_rdata_t *rdata);

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/*

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* Change an integer field of a SOA record by modifying the

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* rdata in-place.

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*

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* Requires:

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* rdata refers to the rdata of a well-formed SOA record.

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*/

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ISC_LANG_ENDDECLS

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#endif /* DNS_SOA_H */

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