mirror of https://github.com/getdnsapi/getdns.git
144 lines
5.3 KiB
C
144 lines
5.3 KiB
C
/**
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*
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* /brief getdns support functions for DNS Resource Records
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*/
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/*
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* Copyright (c) 2013, NLnet Labs, Verisign, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the names of the copyright holders nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Verisign, Inc. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef RR_DICT_H_
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#define RR_DICT_H_
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#include "config.h"
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#include "getdns/getdns.h"
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#include "gldns/gbuffer.h"
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typedef uint8_t *(*_getdns_rdf_end_t)(
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uint8_t *pkt, uint8_t *pkt_end, uint8_t *rdf);
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/* Limit checks are already done with _getdns_rdf_end_t */
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typedef getdns_return_t (*_getdns_rdf_dict_set_value_t)(
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getdns_dict *dict, uint8_t *rdf);
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typedef getdns_return_t (*_getdns_rdf_list_append_value_t)(
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getdns_list *list, uint8_t *rdf);
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typedef struct _getdns_rdf_special {
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_getdns_rdf_end_t rdf_end;
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_getdns_rdf_dict_set_value_t dict_set_value;
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_getdns_rdf_list_append_value_t list_append_value;
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} _getdns_rdf_special;
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/* draft-levine-dnsextlang'ish type rr and rdata definitions */
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#define GETDNS_RDF_INTEGER 0x010000
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#define GETDNS_RDF_BINDATA 0x020000
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#define GETDNS_RDF_DNAME 0x040000
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#define GETDNS_RDF_COMPRESSED 0x080000
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#define GETDNS_RDF_REPEAT 0x100000
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#define GETDNS_RDF_FIXEDSZ 0x0000FF
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#define GETDNS_RDF_LEN_VAL 0x00FF00
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typedef enum _getdns_rdf_wf_type {
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GETDNS_RDF_N = 0x060000, /* N */
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GETDNS_RDF_N_A = 0x060000, /* N[A] */
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GETDNS_RDF_N_C = 0x0E0000, /* N[C] */
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GETDNS_RDF_N_A_C = 0x0E0000, /* N[A,C] */
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GETDNS_RDF_N_M = 0x160000, /* N[M] */
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GETDNS_RDF_I1 = 0x010001, /* I1 */
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GETDNS_RDF_I2 = 0x010002, /* I2 */
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GETDNS_RDF_I4 = 0x010004, /* I4 */
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GETDNS_RDF_T = 0x010004, /* T */
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/* Time values using ring arithmetics
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* (rfc1982) for TKEY['inception'],
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* TKEY['expiration'],
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* RRSIG['inception'] and
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* RRSIG['expiration']
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*/
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GETDNS_RDF_T6 = 0x020006, /* T6 */
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/* Absolute time values (since epoch)
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* for TSIG['time_signed']
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*/
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GETDNS_RDF_A = 0x020004, /* A */
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GETDNS_RDF_AA = 0x020008, /* AA */
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GETDNS_RDF_AAAA = 0x020010, /* AAAA */
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GETDNS_RDF_S = 0x020100, /* S */
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GETDNS_RDF_S_L = 0x020000, /* S[L] */
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GETDNS_RDF_S_M = 0x120100, /* S[M] */
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GETDNS_RDF_B = 0x020000, /* B */
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GETDNS_RDF_B_C = 0x020100, /* B[C] */
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GETDNS_RDF_B32_C = 0x020100, /* B32[C] */
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GETDNS_RDF_X = 0x020000, /* X */
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GETDNS_RDF_X_C = 0x020100, /* X[C] */
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/* for NSEC3['salt'] and
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* NSEC3PARAM['salt'].
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*/
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GETDNS_RDF_X_S = 0x020200, /* X[S] */
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/* for OPT['option_data'],
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* TKEY['key_data'],
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* TKEY['other_data'],
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* TSIG['mac'] and
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* TSIG['other_data']
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* Although those do not have an
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* official presentation format.
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*/
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GETDNS_RDF_X6 = 0x020006,
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GETDNS_RDF_X8 = 0x020008,
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GETDNS_RDF_R = 0x100000, /* Repeat */
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GETDNS_RDF_SPECIAL = 0x800000,
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} _getdns_rdf_type;
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typedef struct _getdns_rdata_def {
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const char *name;
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_getdns_rdf_type type;
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_getdns_rdf_special *special;
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} _getdns_rdata_def;
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typedef struct _getdns_rr_def {
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const char *name;
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const _getdns_rdata_def *rdata;
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int n_rdata_fields;
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} _getdns_rr_def;
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const _getdns_rr_def *_getdns_rr_def_lookup(uint16_t rr_type);
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getdns_return_t _getdns_rr_dict2wire(
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getdns_dict *rr_dict, gldns_buffer *buf);
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const char *_getdns_rr_type_name(int rr_type);
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#endif
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/* rrs.h */
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