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monero/external/unbound/sldns/rrdef.h
Riccardo Spagni 2d43ae8063
update unbound, fix unbound openssl issue on OS X
2015-12-30 12:57:50 +02:00

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C
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/*
* rrdef.h
*
* RR definitions
*
* a Net::DNS like library for C
*
* (c) NLnet Labs, 2005-2006
*
* See the file LICENSE for the license
*/
/**
* \file
*
* Defines resource record types and constants.
*/
#ifndef LDNS_RRDEF_H
#define LDNS_RRDEF_H
#ifdef __cplusplus
extern "C" {
#endif
/** Maximum length of a dname label */
#define LDNS_MAX_LABELLEN 63
/** Maximum length of a complete dname */
#define LDNS_MAX_DOMAINLEN 255
/** Maximum number of pointers in 1 dname */
#define LDNS_MAX_POINTERS 65535
/** The bytes TTL, CLASS and length use up in an rr */
#define LDNS_RR_OVERHEAD 10
#define LDNS_DNSSEC_KEYPROTO 3
#define LDNS_KEY_ZONE_KEY 0x0100 /* set for ZSK&KSK, rfc 4034 */
#define LDNS_KEY_SEP_KEY 0x0001 /* set for KSK, rfc 4034 */
#define LDNS_KEY_REVOKE_KEY 0x0080 /* used to revoke KSK, rfc 5011 */
/* The first fields are contiguous and can be referenced instantly */
#define LDNS_RDATA_FIELD_DESCRIPTORS_COMMON 258
/** lookuptable for rr classes */
extern struct sldns_struct_lookup_table* sldns_rr_classes;
/**
* The different RR classes.
*/
enum sldns_enum_rr_class
{
/** the Internet */
LDNS_RR_CLASS_IN = 1,
/** Chaos class */
LDNS_RR_CLASS_CH = 3,
/** Hesiod (Dyer 87) */
LDNS_RR_CLASS_HS = 4,
/** None class, dynamic update */
LDNS_RR_CLASS_NONE = 254,
/** Any class */
LDNS_RR_CLASS_ANY = 255,
LDNS_RR_CLASS_FIRST = 0,
LDNS_RR_CLASS_LAST = 65535,
LDNS_RR_CLASS_COUNT = LDNS_RR_CLASS_LAST - LDNS_RR_CLASS_FIRST + 1
};
typedef enum sldns_enum_rr_class sldns_rr_class;
/**
* Used to specify whether compression is allowed.
*/
enum sldns_enum_rr_compress
{
/** compression is allowed */
LDNS_RR_COMPRESS,
LDNS_RR_NO_COMPRESS
};
typedef enum sldns_enum_rr_compress sldns_rr_compress;
/**
* The different RR types.
*/
enum sldns_enum_rr_type
{
/** a host address */
LDNS_RR_TYPE_A = 1,
/** an authoritative name server */
LDNS_RR_TYPE_NS = 2,
/** a mail destination (Obsolete - use MX) */
LDNS_RR_TYPE_MD = 3,
/** a mail forwarder (Obsolete - use MX) */
LDNS_RR_TYPE_MF = 4,
/** the canonical name for an alias */
LDNS_RR_TYPE_CNAME = 5,
/** marks the start of a zone of authority */
LDNS_RR_TYPE_SOA = 6,
/** a mailbox domain name (EXPERIMENTAL) */
LDNS_RR_TYPE_MB = 7,
/** a mail group member (EXPERIMENTAL) */
LDNS_RR_TYPE_MG = 8,
/** a mail rename domain name (EXPERIMENTAL) */
LDNS_RR_TYPE_MR = 9,
/** a null RR (EXPERIMENTAL) */
LDNS_RR_TYPE_NULL = 10,
/** a well known service description */
LDNS_RR_TYPE_WKS = 11,
/** a domain name pointer */
LDNS_RR_TYPE_PTR = 12,
/** host information */
LDNS_RR_TYPE_HINFO = 13,
/** mailbox or mail list information */
LDNS_RR_TYPE_MINFO = 14,
/** mail exchange */
LDNS_RR_TYPE_MX = 15,
/** text strings */
LDNS_RR_TYPE_TXT = 16,
/** RFC1183 */
LDNS_RR_TYPE_RP = 17,
/** RFC1183 */
LDNS_RR_TYPE_AFSDB = 18,
/** RFC1183 */
LDNS_RR_TYPE_X25 = 19,
/** RFC1183 */
LDNS_RR_TYPE_ISDN = 20,
/** RFC1183 */
LDNS_RR_TYPE_RT = 21,
/** RFC1706 */
LDNS_RR_TYPE_NSAP = 22,
/** RFC1348 */
LDNS_RR_TYPE_NSAP_PTR = 23,
/** 2535typecode */
LDNS_RR_TYPE_SIG = 24,
/** 2535typecode */
LDNS_RR_TYPE_KEY = 25,
/** RFC2163 */
LDNS_RR_TYPE_PX = 26,
/** RFC1712 */
LDNS_RR_TYPE_GPOS = 27,
/** ipv6 address */
LDNS_RR_TYPE_AAAA = 28,
/** LOC record RFC1876 */
LDNS_RR_TYPE_LOC = 29,
/** 2535typecode */
LDNS_RR_TYPE_NXT = 30,
/** draft-ietf-nimrod-dns-01.txt */
LDNS_RR_TYPE_EID = 31,
/** draft-ietf-nimrod-dns-01.txt */
LDNS_RR_TYPE_NIMLOC = 32,
/** SRV record RFC2782 */
LDNS_RR_TYPE_SRV = 33,
/** http://www.jhsoft.com/rfc/af-saa-0069.000.rtf */
LDNS_RR_TYPE_ATMA = 34,
/** RFC2915 */
LDNS_RR_TYPE_NAPTR = 35,
/** RFC2230 */
LDNS_RR_TYPE_KX = 36,
/** RFC2538 */
LDNS_RR_TYPE_CERT = 37,
/** RFC2874 */
LDNS_RR_TYPE_A6 = 38,
/** RFC2672 */
LDNS_RR_TYPE_DNAME = 39,
/** dnsind-kitchen-sink-02.txt */
LDNS_RR_TYPE_SINK = 40,
/** Pseudo OPT record... */
LDNS_RR_TYPE_OPT = 41,
/** RFC3123 */
LDNS_RR_TYPE_APL = 42,
/** RFC4034, RFC3658 */
LDNS_RR_TYPE_DS = 43,
/** SSH Key Fingerprint */
LDNS_RR_TYPE_SSHFP = 44, /* RFC 4255 */
/** IPsec Key */
LDNS_RR_TYPE_IPSECKEY = 45, /* RFC 4025 */
/** DNSSEC */
LDNS_RR_TYPE_RRSIG = 46, /* RFC 4034 */
LDNS_RR_TYPE_NSEC = 47, /* RFC 4034 */
LDNS_RR_TYPE_DNSKEY = 48, /* RFC 4034 */
LDNS_RR_TYPE_DHCID = 49, /* RFC 4701 */
/* NSEC3 */
LDNS_RR_TYPE_NSEC3 = 50, /* RFC 5155 */
LDNS_RR_TYPE_NSEC3PARAM = 51, /* RFC 5155 */
LDNS_RR_TYPE_NSEC3PARAMS = 51,
LDNS_RR_TYPE_TLSA = 52, /* RFC 6698 */
LDNS_RR_TYPE_HIP = 55, /* RFC 5205 */
/** draft-reid-dnsext-zs */
LDNS_RR_TYPE_NINFO = 56,
/** draft-reid-dnsext-rkey */
LDNS_RR_TYPE_RKEY = 57,
/** draft-ietf-dnsop-trust-history */
LDNS_RR_TYPE_TALINK = 58,
LDNS_RR_TYPE_CDS = 59, /** RFC 7344 */
LDNS_RR_TYPE_CDNSKEY = 60, /** RFC 7344 */
LDNS_RR_TYPE_SPF = 99, /* RFC 4408 */
LDNS_RR_TYPE_UINFO = 100,
LDNS_RR_TYPE_UID = 101,
LDNS_RR_TYPE_GID = 102,
LDNS_RR_TYPE_UNSPEC = 103,
LDNS_RR_TYPE_NID = 104, /* RFC 6742 */
LDNS_RR_TYPE_L32 = 105, /* RFC 6742 */
LDNS_RR_TYPE_L64 = 106, /* RFC 6742 */
LDNS_RR_TYPE_LP = 107, /* RFC 6742 */
/** draft-jabley-dnsext-eui48-eui64-rrtypes */
LDNS_RR_TYPE_EUI48 = 108,
LDNS_RR_TYPE_EUI64 = 109,
LDNS_RR_TYPE_TKEY = 249, /* RFC 2930 */
LDNS_RR_TYPE_TSIG = 250,
LDNS_RR_TYPE_IXFR = 251,
LDNS_RR_TYPE_AXFR = 252,
/** A request for mailbox-related records (MB, MG or MR) */
LDNS_RR_TYPE_MAILB = 253,
/** A request for mail agent RRs (Obsolete - see MX) */
LDNS_RR_TYPE_MAILA = 254,
/** any type (wildcard) */
LDNS_RR_TYPE_ANY = 255,
LDNS_RR_TYPE_URI = 256, /* RFC 7553 */
LDNS_RR_TYPE_CAA = 257, /* RFC 6844 */
/** DNSSEC Trust Authorities */
LDNS_RR_TYPE_TA = 32768,
/* RFC 4431, 5074, DNSSEC Lookaside Validation */
LDNS_RR_TYPE_DLV = 32769,
/* type codes from nsec3 experimental phase
LDNS_RR_TYPE_NSEC3 = 65324,
LDNS_RR_TYPE_NSEC3PARAMS = 65325, */
LDNS_RR_TYPE_FIRST = 0,
LDNS_RR_TYPE_LAST = 65535,
LDNS_RR_TYPE_COUNT = LDNS_RR_TYPE_LAST - LDNS_RR_TYPE_FIRST + 1
};
typedef enum sldns_enum_rr_type sldns_rr_type;
/* RDATA */
#define LDNS_MAX_RDFLEN 65535
#define LDNS_RDF_SIZE_BYTE 1
#define LDNS_RDF_SIZE_WORD 2
#define LDNS_RDF_SIZE_DOUBLEWORD 4
#define LDNS_RDF_SIZE_6BYTES 6
#define LDNS_RDF_SIZE_8BYTES 8
#define LDNS_RDF_SIZE_16BYTES 16
#define LDNS_NSEC3_VARS_OPTOUT_MASK 0x01
#define LDNS_APL_IP4 1
#define LDNS_APL_IP6 2
#define LDNS_APL_MASK 0x7f
#define LDNS_APL_NEGATION 0x80
/**
* The different types of RDATA fields.
*/
enum sldns_enum_rdf_type
{
/** none */
LDNS_RDF_TYPE_NONE,
/** domain name */
LDNS_RDF_TYPE_DNAME,
/** 8 bits */
LDNS_RDF_TYPE_INT8,
/** 16 bits */
LDNS_RDF_TYPE_INT16,
/** 32 bits */
LDNS_RDF_TYPE_INT32,
/** A record */
LDNS_RDF_TYPE_A,
/** AAAA record */
LDNS_RDF_TYPE_AAAA,
/** txt string */
LDNS_RDF_TYPE_STR,
/** apl data */
LDNS_RDF_TYPE_APL,
/** b32 string */
LDNS_RDF_TYPE_B32_EXT,
/** b64 string */
LDNS_RDF_TYPE_B64,
/** hex string */
LDNS_RDF_TYPE_HEX,
/** nsec type codes */
LDNS_RDF_TYPE_NSEC,
/** a RR type */
LDNS_RDF_TYPE_TYPE,
/** a class */
LDNS_RDF_TYPE_CLASS,
/** certificate algorithm */
LDNS_RDF_TYPE_CERT_ALG,
/** a key algorithm */
LDNS_RDF_TYPE_ALG,
/** unknown types */
LDNS_RDF_TYPE_UNKNOWN,
/** time (32 bits) */
LDNS_RDF_TYPE_TIME,
/** period */
LDNS_RDF_TYPE_PERIOD,
/** tsig time 48 bits */
LDNS_RDF_TYPE_TSIGTIME,
/** Represents the Public Key Algorithm, HIT and Public Key fields
for the HIP RR types. A HIP specific rdf type is used because of
the unusual layout in wireformat (see RFC 5205 Section 5) */
LDNS_RDF_TYPE_HIP,
/** variable length any type rdata where the length
is specified by the first 2 bytes */
LDNS_RDF_TYPE_INT16_DATA,
/** protocol and port bitmaps */
LDNS_RDF_TYPE_SERVICE,
/** location data */
LDNS_RDF_TYPE_LOC,
/** well known services */
LDNS_RDF_TYPE_WKS,
/** NSAP */
LDNS_RDF_TYPE_NSAP,
/** ATMA */
LDNS_RDF_TYPE_ATMA,
/** IPSECKEY */
LDNS_RDF_TYPE_IPSECKEY,
/** nsec3 hash salt */
LDNS_RDF_TYPE_NSEC3_SALT,
/** nsec3 base32 string (with length byte on wire */
LDNS_RDF_TYPE_NSEC3_NEXT_OWNER,
/** 4 shorts represented as 4 * 16 bit hex numbers
* seperated by colons. For NID and L64.
*/
LDNS_RDF_TYPE_ILNP64,
/** 6 * 8 bit hex numbers seperated by dashes. For EUI48. */
LDNS_RDF_TYPE_EUI48,
/** 8 * 8 bit hex numbers seperated by dashes. For EUI64. */
LDNS_RDF_TYPE_EUI64,
/** A non-zero sequence of US-ASCII letters and numbers in lower case.
* For CAA.
*/
LDNS_RDF_TYPE_TAG,
/** A <character-string> encoding of the value field as specified
* [RFC1035], Section 5.1., encoded as remaining rdata.
* For CAA, URI.
*/
LDNS_RDF_TYPE_LONG_STR,
/* Aliases */
LDNS_RDF_TYPE_BITMAP = LDNS_RDF_TYPE_NSEC
};
typedef enum sldns_enum_rdf_type sldns_rdf_type;
/**
* Algorithms used in dns
*/
enum sldns_enum_algorithm
{
LDNS_RSAMD5 = 1, /* RFC 4034,4035 */
LDNS_DH = 2,
LDNS_DSA = 3,
LDNS_ECC = 4,
LDNS_RSASHA1 = 5,
LDNS_DSA_NSEC3 = 6,
LDNS_RSASHA1_NSEC3 = 7,
LDNS_RSASHA256 = 8, /* RFC 5702 */
LDNS_RSASHA512 = 10, /* RFC 5702 */
LDNS_ECC_GOST = 12, /* RFC 5933 */
LDNS_ECDSAP256SHA256 = 13, /* RFC 6605 */
LDNS_ECDSAP384SHA384 = 14, /* RFC 6605 */
LDNS_INDIRECT = 252,
LDNS_PRIVATEDNS = 253,
LDNS_PRIVATEOID = 254
};
typedef enum sldns_enum_algorithm sldns_algorithm;
/**
* Hashing algorithms used in the DS record
*/
enum sldns_enum_hash
{
LDNS_SHA1 = 1, /* RFC 4034 */
LDNS_SHA256 = 2, /* RFC 4509 */
LDNS_HASH_GOST = 3, /* RFC 5933 */
LDNS_SHA384 = 4 /* RFC 6605 */
};
typedef enum sldns_enum_hash sldns_hash;
/**
* algorithms used in CERT rrs
*/
enum sldns_enum_cert_algorithm
{
LDNS_CERT_PKIX = 1,
LDNS_CERT_SPKI = 2,
LDNS_CERT_PGP = 3,
LDNS_CERT_IPKIX = 4,
LDNS_CERT_ISPKI = 5,
LDNS_CERT_IPGP = 6,
LDNS_CERT_ACPKIX = 7,
LDNS_CERT_IACPKIX = 8,
LDNS_CERT_URI = 253,
LDNS_CERT_OID = 254
};
typedef enum sldns_enum_cert_algorithm sldns_cert_algorithm;
/**
* EDNS option codes
*/
enum sldns_enum_edns_option
{
LDNS_EDNS_LLQ = 1, /* http://files.dns-sd.org/draft-sekar-dns-llq.txt */
LDNS_EDNS_UL = 2, /* http://files.dns-sd.org/draft-sekar-dns-ul.txt */
LDNS_EDNS_NSID = 3, /* RFC5001 */
/* 4 draft-cheshire-edns0-owner-option */
LDNS_EDNS_DAU = 5, /* RFC6975 */
LDNS_EDNS_DHU = 6, /* RFC6975 */
LDNS_EDNS_N3U = 7, /* RFC6975 */
LDNS_EDNS_CLIENT_SUBNET = 8 /* draft-vandergaast-edns-client-subnet */
};
typedef enum sldns_enum_edns_option sldns_edns_option;
#define LDNS_EDNS_MASK_DO_BIT 0x8000
/**
* Contains all information about resource record types.
*
* This structure contains, for all rr types, the rdata fields that are defined.
*/
struct sldns_struct_rr_descriptor
{
/** Type of the RR that is described here */
sldns_rr_type _type;
/** Textual name of the RR type. */
const char *_name;
/** Minimum number of rdata fields in the RRs of this type. */
uint8_t _minimum;
/** Maximum number of rdata fields in the RRs of this type. */
uint8_t _maximum;
/** Wireformat specification for the rr, i.e. the types of rdata fields in their respective order. */
const sldns_rdf_type *_wireformat;
/** Special rdf types */
sldns_rdf_type _variable;
/** Specifies whether compression can be used for dnames in this RR type. */
sldns_rr_compress _compress;
/** The number of DNAMEs in the _wireformat string, for parsing. */
uint8_t _dname_count;
};
typedef struct sldns_struct_rr_descriptor sldns_rr_descriptor;
/**
* returns the resource record descriptor for the given rr type.
*
* \param[in] type the type value of the rr type
*\return the sldns_rr_descriptor for this type
*/
const sldns_rr_descriptor *sldns_rr_descript(uint16_t type);
/**
* returns the minimum number of rdata fields of the rr type this descriptor describes.
*
* \param[in] descriptor for an rr type
* \return the minimum number of rdata fields
*/
size_t sldns_rr_descriptor_minimum(const sldns_rr_descriptor *descriptor);
/**
* returns the maximum number of rdata fields of the rr type this descriptor describes.
*
* \param[in] descriptor for an rr type
* \return the maximum number of rdata fields
*/
size_t sldns_rr_descriptor_maximum(const sldns_rr_descriptor *descriptor);
/**
* returns the rdf type for the given rdata field number of the rr type for the given descriptor.
*
* \param[in] descriptor for an rr type
* \param[in] field the field number
* \return the rdf type for the field
*/
sldns_rdf_type sldns_rr_descriptor_field_type(const sldns_rr_descriptor *descriptor, size_t field);
/**
* retrieves a rrtype by looking up its name.
* \param[in] name a string with the name
* \return the type which corresponds with the name
*/
sldns_rr_type sldns_get_rr_type_by_name(const char *name);
/**
* retrieves a class by looking up its name.
* \param[in] name string with the name
* \return the cass which corresponds with the name
*/
sldns_rr_class sldns_get_rr_class_by_name(const char *name);
#ifdef __cplusplus
}
#endif
#endif /* LDNS_RRDEF_H */
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