/*

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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_RDATACLASS_H

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#define DNS_RDATACLASS_H 1

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/*! \file dns/rdataclass.h */

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#include <isc/lang.h>

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#include <dns/types.h>

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ISC_LANG_BEGINDECLS

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isc_result_t

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dns_rdataclass_fromtext(dns_rdataclass_t *classp, isc_textregion_t *source);

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/*%<

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* Convert the text 'source' refers to into a DNS class.

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*

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* Requires:

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*\li 'classp' is a valid pointer.

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*

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*\li 'source' is a valid text region.

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*

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* Returns:

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*\li #ISC_R_SUCCESS on success

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*\li #DNS_R_UNKNOWN class is unknown

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*/

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isc_result_t

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dns_rdataclass_totext(dns_rdataclass_t rdclass, isc_buffer_t *target);

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/*%<

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* Put a textual representation of class 'rdclass' into 'target'.

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*

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* Requires:

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*\li 'rdclass' is a valid class.

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*

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*\li 'target' is a valid text buffer.

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*

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* Ensures,

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* if the result is success:

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*\li The used space in 'target' is updated.

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*

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* Returns:

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*\li #ISC_R_SUCCESS on success

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*\li #ISC_R_NOSPACE target buffer is too small

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*/

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isc_result_t

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dns_rdataclass_tounknowntext(dns_rdataclass_t rdclass, isc_buffer_t *target);

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/*%<

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* Put textual RFC3597 CLASSXXXX representation of class 'rdclass' into

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* 'target'.

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*

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* Requires:

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*\li 'rdclass' is a valid class.

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*

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*\li 'target' is a valid text buffer.

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*

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* Ensures,

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* if the result is success:

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*\li The used space in 'target' is updated.

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*

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* Returns:

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*\li #ISC_R_SUCCESS on success

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*\li #ISC_R_NOSPACE target buffer is too small

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*/

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void

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dns_rdataclass_format(dns_rdataclass_t rdclass,

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char *array, unsigned int size);

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/*%<

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* Format a human-readable representation of the class 'rdclass'

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* into the character array 'array', which is of size 'size'.

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* The resulting string is guaranteed to be null-terminated.

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*/

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#define DNS_RDATACLASS_FORMATSIZE sizeof("CLASS65535")

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/*%<

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* Minimum size of array to pass to dns_rdataclass_format().

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*/

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ISC_LANG_ENDDECLS

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#endif /* DNS_RDATACLASS_H */

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