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danicoin/external/unbound/sldns/rrdef.h
Erik de Castro Lopo a85b5759f3 Upgrade unbound library 
These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).
2017-06-17 23:04:00 +10:00

510 lines
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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_SMIMEA = 53, /* draft-ietf-dane-smime, TLSA-like but may
be extended */
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_OPENPGPKEY = 61, /* RFC 7929 */
LDNS_RR_TYPE_CSYNC = 62, /* RFC 7477 */
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_ED25519 = 15, /* RFC 8080 */
LDNS_ED448 = 16, /* RFC 8080 */
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, /* RFC7871 */
LDNS_EDNS_KEEPALIVE = 11, /* draft-ietf-dnsop-edns-tcp-keepalive*/
LDNS_EDNS_PADDING = 12 /* RFC7830 */
};
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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