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/*
* rdata.h -- RDATA conversion functions.
*
* Copyright (c) 2001-2011, NLnet Labs. All rights reserved.
*
* See LICENSE for the license.
*
*/
#ifndef _RDATA_H_
#define _RDATA_H_
#include "dns.h"
#include "namedb.h"
/* High bit of the APL length field is the negation bit. */
#define APL_NEGATION_MASK 0x80U
#define APL_LENGTH_MASK (~APL_NEGATION_MASK)
extern lookup_table_type dns_certificate_types[];
extern lookup_table_type dns_algorithms[];
int rdata_atom_to_string(buffer_type *output, rdata_zoneformat_type type,
rdata_atom_type rdata, rr_type *rr);
/*
* Split the wireformat RDATA into an array of rdata atoms. Domain
* names are inserted into the OWNERS table. The number of rdata atoms
* is returned and the array itself is allocated in REGION and stored
* in RDATAS.
*
* Returns -1 on failure.
*/
ssize_t rdata_wireformat_to_rdata_atoms(region_type *region,
domain_table_type *owners,
uint16_t rrtype,
uint16_t rdata_size,
buffer_type *packet,
rdata_atom_type **rdatas);
/*
* Calculate the maximum size of the rdata assuming domain names are
* not compressed.
*/
size_t rdata_maximum_wireformat_size(rrtype_descriptor_type *descriptor,
size_t rdata_count,
rdata_atom_type *rdatas);
int rdata_atoms_to_unknown_string(buffer_type *out,
rrtype_descriptor_type *descriptor,
size_t rdata_count,
rdata_atom_type *rdatas);
/* print rdata to a text string (as for a zone file) returns 0
on a failure (bufpos is reset to original position).
returns 1 on success, bufpos is moved. */
int print_rdata(buffer_type *output, rrtype_descriptor_type *descriptor,
rr_type *record);
#endif /* _DNS_H_ */
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