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/*
* Copyright (C) 2012 Reto Guadagnini
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup rr rr
* @{ @ingroup resolver
*/
#ifndef RR_H_
#define RR_H_
typedef struct rr_t rr_t;
typedef enum rr_type_t rr_type_t;
typedef enum rr_class_t rr_class_t;
#include <library.h>
/**
* Resource Record types.
*
* According to www.iana.org/assignments/dns-parameters (version 2012-03-13).
*/
enum rr_type_t {
/** a host address */
RR_TYPE_A = 1,
/** an authoritative name server */
RR_TYPE_NS = 2,
//** a mail destination (OBSOLETE - use MX */
RR_TYPE_MD = 3,
/** a mail forwarder (OBSOLETE - use MX) */
RR_TYPE_MF = 4,
/** the canonical name for an alias */
RR_TYPE_CNAME = 5,
/** marks the start of a zone of authority */
RR_TYPE_SOA = 6,
/** a mailbox domain name (EXPERIMENTAL) */
RR_TYPE_MB = 7,
/** a mail group member (EXPERIMENTAL) */
RR_TYPE_MG = 8,
/** a mail rename domain name (EXPERIMENTAL) */
RR_TYPE_MR = 9,
/** a null RR (EXPERIMENTAL) */
RR_TYPE_NULL = 10,
/** a well known service description */
RR_TYPE_WKS = 11,
/** a domain name pointer */
RR_TYPE_PTR = 12,
/** host information */
RR_TYPE_HINFO = 13,
/** mailbox or mail list information */
RR_TYPE_MINFO = 14,
/** mail exchange */
RR_TYPE_MX = 15,
/** text strings */
RR_TYPE_TXT = 16,
/** for Responsible Person */
RR_TYPE_RP = 17,
/** for AFS Data Base location */
RR_TYPE_AFSDB = 18,
/** for X.25 PSDN address */
RR_TYPE_X25 = 19,
/** for ISDN address */
RR_TYPE_ISDN = 20,
/** for Route Through */
RR_TYPE_RT = 21,
/** for NSAP address, NSAP style A record */
RR_TYPE_NSAP = 22,
/** for domain name pointer, NSAP style */
RR_TYPE_NSAP_PTR = 23,
/** for security signature */
RR_TYPE_SIG = 24,
/** for security key */
RR_TYPE_KEY = 25,
/** X.400 mail mapping information */
RR_TYPE_PX = 26,
/** Geographical Position */
RR_TYPE_GPOS = 27,
/** ipv6 address */
RR_TYPE_AAAA = 28,
/** Location Information */
RR_TYPE_LOC = 29,
/** Next Domain (OBSOLETE) */
RR_TYPE_NXT = 30,
/** Endpoint Identifier */
RR_TYPE_EID = 31,
/** Nimrod Locator */
RR_TYPE_NIMLOC = 32,
/** Server Selection */
RR_TYPE_SRV = 33,
/** ATM Address */
RR_TYPE_ATMA = 34,
/** Naming Authority Pointer */
RR_TYPE_NAPTR = 35,
/** Key Exchanger */
RR_TYPE_KX = 36,
/** CERT */
RR_TYPE_CERT = 37,
/** A6 (OBSOLETE - use AAAA) */
RR_TYPE_A6 = 38,
/** DNAME */
RR_TYPE_DNAME = 39,
/** SINK */
RR_TYPE_SINK = 40,
/** OPT */
RR_TYPE_OPT = 41,
/** APL */
RR_TYPE_APL = 42,
/** Delegation Signer */
RR_TYPE_DS = 43,
/** SSH Key Fingerprint */
RR_TYPE_SSHFP = 44,
/** IPSECKEY */
RR_TYPE_IPSECKEY = 45,
/** RRSIG */
RR_TYPE_RRSIG = 46,
/** NSEC */
RR_TYPE_NSEC = 47,
/** DNSKEY */
RR_TYPE_DNSKEY = 48,
/** DHCID */
RR_TYPE_DHCID = 49,
/** NSEC3 */
RR_TYPE_NSEC3 = 50,
/** NSEC3PARAM */
RR_TYPE_NSEC3PARAM = 51,
/** Unassigned 52-54 */
/** Host Identity Protocol */
RR_TYPE_HIP = 55,
/** NINFO */
RR_TYPE_NINFO = 56,
/** RKEY */
RR_TYPE_RKEY = 57,
/** Trust Anchor LINK */
RR_TYPE_TALINK = 58,
/** Child DS */
RR_TYPE_CDS = 59,
/** Unassigned 60-98 */
/** SPF */
RR_TYPE_SPF = 99,
/** UINFO */
RR_TYPE_UINFO = 100,
/** UID */
RR_TYPE_UID = 101,
/** GID */
RR_TYPE_GID = 102,
/** UNSPEC */
RR_TYPE_UNSPEC = 103,
/** Unassigned 104-248 */
/** Transaction Key */
RR_TYPE_TKEY = 249,
/** Transaction Signature */
RR_TYPE_TSIG = 250,
/** incremental transfer */
RR_TYPE_IXFR = 251,
/** transfer of an entire zone */
RR_TYPE_AXFR = 252,
/** mailbox-related RRs (MB, MG or MR) */
RR_TYPE_MAILB = 253,
/** mail agent RRs (OBSOLETE - see MX) */
RR_TYPE_MAILA = 254,
/** A request for all records */
RR_TYPE_ANY = 255,
/** URI */
RR_TYPE_URI = 256,
/** Certification Authority Authorization */
RR_TYPE_CAA = 257,
/** Unassigned 258-32767 */
/** DNSSEC Trust Authorities */
RR_TYPE_TA = 32768,
/** DNSSEC Lookaside Validation */
RR_TYPE_DLV = 32769,
/** Unassigned 32770-65279 */
/** Private use 65280-65534 */
/** Reserved 65535 */
};
/**
* Resource Record CLASSes
*/
enum rr_class_t {
/** Internet */
RR_CLASS_IN = 1,
/** Chaos */
RR_CLASS_CH = 3,
/** Hesiod */
RR_CLASS_HS = 4,
/** further CLASSes: http://wwwiana.org/assignments/dns-parameters */
};
/**
* A DNS Resource Record.
*
* Represents a Resource Record of the Domain Name System
* as defined in RFC 1035.
*
*/
struct rr_t {
/**
* Get the NAME of the owner of this RR.
*
* @return owner name as string
*/
char *(*get_name)(rr_t *this);
/**
* Get the type of this RR.
*
* @return RR type
*/
rr_type_t (*get_type)(rr_t *this);
/**
* Get the class of this RR.
*
* @return RR class
*/
rr_class_t (*get_class)(rr_t *this);
/**
* Get the Time to Live (TTL) of this RR.
*
* @return Time to Live
*/
uint32_t (*get_ttl)(rr_t *this);
/**
* Get the content of the RDATA field as chunk.
*
* The data pointed by the chunk is still owned by the RR.
* Clone it if needed.
*
* @return RDATA field as chunk
*/
chunk_t (*get_rdata)(rr_t *this);
/**
* Destroy the Resource Record.
*/
void (*destroy) (rr_t *this);
};
#endif /** RR_H_ @}*/
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