Data Structures
struct	sldns_struct_rr_descriptor
	Contains all information about resource record types. More...

Macros
#define	LDNS_MAX_LABELLEN 63
	Maximum length of a dname label.

#define	LDNS_MAX_DOMAINLEN 255
	Maximum length of a complete dname.

#define	LDNS_MAX_POINTERS 65535
	Maximum number of pointers in 1 dname.

#define	LDNS_RR_OVERHEAD 10
	The bytes TTL, CLASS and length use up in an rr.

#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 */

#define	LDNS_RDATA_FIELD_DESCRIPTORS_COMMON 259

#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

#define	LDNS_EDNS_MASK_DO_BIT 0x8000

#define	LDNS_TSIG_ERROR_NOERROR 0
	TSIG and TKEY extended rcodes (16bit), 0-15 are the normal rcodes.

#define	LDNS_TSIG_ERROR_BADSIG 16

#define	LDNS_TSIG_ERROR_BADKEY 17

#define	LDNS_TSIG_ERROR_BADTIME 18

#define	LDNS_TSIG_ERROR_BADMODE 19

#define	LDNS_TSIG_ERROR_BADNAME 20

#define	LDNS_TSIG_ERROR_BADALG 21

Typedefs
typedef enum sldns_enum_rr_class	sldns_rr_class

typedef enum sldns_enum_rr_compress	sldns_rr_compress

typedef enum sldns_enum_rr_type	sldns_rr_type

typedef enum sldns_enum_rdf_type	sldns_rdf_type

typedef enum sldns_enum_algorithm	sldns_algorithm

typedef enum sldns_enum_hash	sldns_hash

typedef enum sldns_enum_cert_algorithm	sldns_cert_algorithm

typedef enum sldns_enum_edns_option	sldns_edns_option

typedef enum sldns_enum_ede_code	sldns_ede_code

typedef struct sldns_struct_rr_descriptor	sldns_rr_descriptor

Enumerations
enum	sldns_enum_rr_class { LDNS_RR_CLASS_IN = 1, LDNS_RR_CLASS_CH = 3, LDNS_RR_CLASS_HS = 4, LDNS_RR_CLASS_NONE = 254, 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 }
	The different RR classes. More...

enum	sldns_enum_rr_compress { LDNS_RR_COMPRESS, LDNS_RR_NO_COMPRESS }
	Used to specify whether compression is allowed. More...

enum	sldns_enum_rr_type { LDNS_RR_TYPE_A = 1, LDNS_RR_TYPE_NS = 2, LDNS_RR_TYPE_MD = 3, LDNS_RR_TYPE_MF = 4, LDNS_RR_TYPE_CNAME = 5, LDNS_RR_TYPE_SOA = 6, LDNS_RR_TYPE_MB = 7, LDNS_RR_TYPE_MG = 8, LDNS_RR_TYPE_MR = 9, LDNS_RR_TYPE_NULL = 10, LDNS_RR_TYPE_WKS = 11, LDNS_RR_TYPE_PTR = 12, LDNS_RR_TYPE_HINFO = 13, LDNS_RR_TYPE_MINFO = 14, LDNS_RR_TYPE_MX = 15, LDNS_RR_TYPE_TXT = 16, LDNS_RR_TYPE_RP = 17, LDNS_RR_TYPE_AFSDB = 18, LDNS_RR_TYPE_X25 = 19, LDNS_RR_TYPE_ISDN = 20, LDNS_RR_TYPE_RT = 21, LDNS_RR_TYPE_NSAP = 22, LDNS_RR_TYPE_NSAP_PTR = 23, LDNS_RR_TYPE_SIG = 24, LDNS_RR_TYPE_KEY = 25, LDNS_RR_TYPE_PX = 26, LDNS_RR_TYPE_GPOS = 27, LDNS_RR_TYPE_AAAA = 28, LDNS_RR_TYPE_LOC = 29, LDNS_RR_TYPE_NXT = 30, LDNS_RR_TYPE_EID = 31, LDNS_RR_TYPE_NIMLOC = 32, LDNS_RR_TYPE_SRV = 33, LDNS_RR_TYPE_ATMA = 34, LDNS_RR_TYPE_NAPTR = 35, LDNS_RR_TYPE_KX = 36, LDNS_RR_TYPE_CERT = 37, LDNS_RR_TYPE_A6 = 38, LDNS_RR_TYPE_DNAME = 39, LDNS_RR_TYPE_SINK = 40, LDNS_RR_TYPE_OPT = 41, LDNS_RR_TYPE_APL = 42, LDNS_RR_TYPE_DS = 43, LDNS_RR_TYPE_SSHFP = 44, LDNS_RR_TYPE_IPSECKEY = 45, LDNS_RR_TYPE_RRSIG = 46, LDNS_RR_TYPE_NSEC = 47, LDNS_RR_TYPE_DNSKEY = 48, LDNS_RR_TYPE_DHCID = 49, LDNS_RR_TYPE_NSEC3 = 50, LDNS_RR_TYPE_NSEC3PARAM = 51, LDNS_RR_TYPE_NSEC3PARAMS = 51, LDNS_RR_TYPE_TLSA = 52, LDNS_RR_TYPE_SMIMEA = 53, LDNS_RR_TYPE_HIP = 55, LDNS_RR_TYPE_NINFO = 56, LDNS_RR_TYPE_RKEY = 57, LDNS_RR_TYPE_TALINK = 58, LDNS_RR_TYPE_CDS = 59, LDNS_RR_TYPE_CDNSKEY = 60, LDNS_RR_TYPE_OPENPGPKEY = 61, LDNS_RR_TYPE_CSYNC = 62, LDNS_RR_TYPE_ZONEMD = 63, LDNS_RR_TYPE_SVCB = 64, LDNS_RR_TYPE_HTTPS = 65, LDNS_RR_TYPE_SPF = 99, 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, LDNS_RR_TYPE_L32 = 105, LDNS_RR_TYPE_L64 = 106, LDNS_RR_TYPE_LP = 107, LDNS_RR_TYPE_EUI48 = 108, LDNS_RR_TYPE_EUI64 = 109, LDNS_RR_TYPE_TKEY = 249, LDNS_RR_TYPE_TSIG = 250, LDNS_RR_TYPE_IXFR = 251, LDNS_RR_TYPE_AXFR = 252, LDNS_RR_TYPE_MAILB = 253, LDNS_RR_TYPE_MAILA = 254, LDNS_RR_TYPE_ANY = 255, LDNS_RR_TYPE_URI = 256, LDNS_RR_TYPE_CAA = 257, LDNS_RR_TYPE_AVC = 258, LDNS_RR_TYPE_TA = 32768, LDNS_RR_TYPE_DLV = 32769, LDNS_RR_TYPE_FIRST = 0, LDNS_RR_TYPE_LAST = 65535, LDNS_RR_TYPE_COUNT = LDNS_RR_TYPE_LAST - LDNS_RR_TYPE_FIRST + 1 }
	The different RR types. More...

enum	sldns_enum_rdf_type { LDNS_RDF_TYPE_NONE, LDNS_RDF_TYPE_DNAME, LDNS_RDF_TYPE_INT8, LDNS_RDF_TYPE_INT16, LDNS_RDF_TYPE_INT32, LDNS_RDF_TYPE_A, LDNS_RDF_TYPE_AAAA, LDNS_RDF_TYPE_STR, LDNS_RDF_TYPE_APL, LDNS_RDF_TYPE_B32_EXT, LDNS_RDF_TYPE_B64, LDNS_RDF_TYPE_HEX, LDNS_RDF_TYPE_NSEC, LDNS_RDF_TYPE_TYPE, LDNS_RDF_TYPE_CLASS, LDNS_RDF_TYPE_CERT_ALG, LDNS_RDF_TYPE_ALG, LDNS_RDF_TYPE_UNKNOWN, LDNS_RDF_TYPE_TIME, LDNS_RDF_TYPE_PERIOD, LDNS_RDF_TYPE_TSIGTIME, LDNS_RDF_TYPE_HIP, LDNS_RDF_TYPE_INT16_DATA, LDNS_RDF_TYPE_SERVICE, LDNS_RDF_TYPE_LOC, LDNS_RDF_TYPE_WKS, LDNS_RDF_TYPE_NSAP, LDNS_RDF_TYPE_ATMA, LDNS_RDF_TYPE_IPSECKEY, LDNS_RDF_TYPE_NSEC3_SALT, LDNS_RDF_TYPE_NSEC3_NEXT_OWNER, LDNS_RDF_TYPE_ILNP64, LDNS_RDF_TYPE_EUI48, LDNS_RDF_TYPE_EUI64, LDNS_RDF_TYPE_TAG, LDNS_RDF_TYPE_LONG_STR, LDNS_RDF_TYPE_TSIGERROR, LDNS_RDF_TYPE_SVCPARAM, LDNS_RDF_TYPE_BITMAP = LDNS_RDF_TYPE_NSEC }
	The different types of RDATA fields. More...

enum	sldns_enum_algorithm { LDNS_RSAMD5 = 1, LDNS_DH = 2, LDNS_DSA = 3, LDNS_ECC = 4, LDNS_RSASHA1 = 5, LDNS_DSA_NSEC3 = 6, LDNS_RSASHA1_NSEC3 = 7, LDNS_RSASHA256 = 8, LDNS_RSASHA512 = 10, LDNS_ECC_GOST = 12, LDNS_ECDSAP256SHA256 = 13, LDNS_ECDSAP384SHA384 = 14, LDNS_ED25519 = 15, LDNS_ED448 = 16, LDNS_INDIRECT = 252, LDNS_PRIVATEDNS = 253, LDNS_PRIVATEOID = 254 }
	Algorithms used in dns.

enum	sldns_enum_hash { LDNS_SHA1 = 1, LDNS_SHA256 = 2, LDNS_HASH_GOST = 3, LDNS_SHA384 = 4 }
	Hashing algorithms used in the DS record.

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 }
	algorithms used in CERT rrs

enum	sldns_enum_edns_option { LDNS_EDNS_LLQ = 1, LDNS_EDNS_UL = 2, LDNS_EDNS_NSID = 3, LDNS_EDNS_DAU = 5, LDNS_EDNS_DHU = 6, LDNS_EDNS_N3U = 7, LDNS_EDNS_CLIENT_SUBNET = 8, LDNS_EDNS_KEEPALIVE = 11, LDNS_EDNS_PADDING = 12, LDNS_EDNS_EDE = 15, LDNS_EDNS_CLIENT_TAG = 16 }
	EDNS option codes.

enum	sldns_enum_ede_code { LDNS_EDE_NONE = -1, LDNS_EDE_OTHER = 0, LDNS_EDE_UNSUPPORTED_DNSKEY_ALG = 1, LDNS_EDE_UNSUPPORTED_DS_DIGEST = 2, LDNS_EDE_STALE_ANSWER = 3, LDNS_EDE_FORGED_ANSWER = 4, LDNS_EDE_DNSSEC_INDETERMINATE = 5, LDNS_EDE_DNSSEC_BOGUS = 6, LDNS_EDE_SIGNATURE_EXPIRED = 7, LDNS_EDE_SIGNATURE_NOT_YET_VALID = 8, LDNS_EDE_DNSKEY_MISSING = 9, LDNS_EDE_RRSIGS_MISSING = 10, LDNS_EDE_NO_ZONE_KEY_BIT_SET = 11, LDNS_EDE_NSEC_MISSING = 12, LDNS_EDE_CACHED_ERROR = 13, LDNS_EDE_NOT_READY = 14, LDNS_EDE_BLOCKED = 15, LDNS_EDE_CENSORED = 16, LDNS_EDE_FILTERED = 17, LDNS_EDE_PROHIBITED = 18, LDNS_EDE_STALE_NXDOMAIN_ANSWER = 19, LDNS_EDE_NOT_AUTHORITATIVE = 20, LDNS_EDE_NOT_SUPPORTED = 21, LDNS_EDE_NO_REACHABLE_AUTHORITY = 22, LDNS_EDE_NETWORK_ERROR = 23, LDNS_EDE_INVALID_DATA = 24 }

Functions
const sldns_rr_descriptor *	sldns_rr_descript (uint16_t type)
	returns the resource record descriptor for the given rr type. More...

size_t	sldns_rr_descriptor_minimum (const sldns_rr_descriptor *descriptor)
	returns the minimum number of rdata fields of the rr type this descriptor describes. More...

size_t	sldns_rr_descriptor_maximum (const sldns_rr_descriptor *descriptor)
	returns the maximum number of rdata fields of the rr type this descriptor describes. More...

sldns_rdf_type	sldns_rr_descriptor_field_type (const sldns_rr_descriptor *descriptor, size_t field)
	returns the rdf type for the given rdata field number of the rr type for the given descriptor. More...

sldns_rr_type	sldns_get_rr_type_by_name (const char *name)
	retrieves a rrtype by looking up its name. More...

sldns_rr_class	sldns_get_rr_class_by_name (const char *name)
	retrieves a class by looking up its name. More...

Variables
struct sldns_struct_lookup_table *	sldns_rr_classes
	lookuptable for rr classes

Detailed Description

Defines resource record types and constants.

Enumeration Type Documentation

◆ sldns_enum_rr_class

enum sldns_enum_rr_class

The different RR classes.

Enumerator
LDNS_RR_CLASS_IN	the Internet
LDNS_RR_CLASS_CH	Chaos class.
LDNS_RR_CLASS_HS	Hesiod (Dyer 87)
LDNS_RR_CLASS_NONE	None class, dynamic update.
LDNS_RR_CLASS_ANY	Any class.

◆ sldns_enum_rr_compress

enum sldns_enum_rr_compress

Used to specify whether compression is allowed.

Enumerator
LDNS_RR_COMPRESS	compression is allowed

◆ sldns_enum_rr_type

enum sldns_enum_rr_type

The different RR types.

Enumerator
LDNS_RR_TYPE_A	a host address
LDNS_RR_TYPE_NS	an authoritative name server
LDNS_RR_TYPE_MD	a mail destination (Obsolete - use MX)
LDNS_RR_TYPE_MF	a mail forwarder (Obsolete - use MX)
LDNS_RR_TYPE_CNAME	the canonical name for an alias
LDNS_RR_TYPE_SOA	marks the start of a zone of authority
LDNS_RR_TYPE_MB	a mailbox domain name (EXPERIMENTAL)
LDNS_RR_TYPE_MG	a mail group member (EXPERIMENTAL)
LDNS_RR_TYPE_MR	a mail rename domain name (EXPERIMENTAL)
LDNS_RR_TYPE_NULL	a null RR (EXPERIMENTAL)
LDNS_RR_TYPE_WKS	a well known service description
LDNS_RR_TYPE_PTR	a domain name pointer
LDNS_RR_TYPE_HINFO	host information
LDNS_RR_TYPE_MINFO	mailbox or mail list information
LDNS_RR_TYPE_MX	mail exchange
LDNS_RR_TYPE_TXT	text strings
LDNS_RR_TYPE_RP	RFC1183.
LDNS_RR_TYPE_AFSDB	RFC1183.
LDNS_RR_TYPE_X25	RFC1183.
LDNS_RR_TYPE_ISDN	RFC1183.
LDNS_RR_TYPE_RT	RFC1183.
LDNS_RR_TYPE_NSAP	RFC1706.
LDNS_RR_TYPE_NSAP_PTR	RFC1348.
LDNS_RR_TYPE_SIG	2535typecode
LDNS_RR_TYPE_KEY	2535typecode
LDNS_RR_TYPE_PX	RFC2163.
LDNS_RR_TYPE_GPOS	RFC1712.
LDNS_RR_TYPE_AAAA	ipv6 address
LDNS_RR_TYPE_LOC	LOC record RFC1876.
LDNS_RR_TYPE_NXT	2535typecode
LDNS_RR_TYPE_EID	draft-ietf-nimrod-dns-01.txt
LDNS_RR_TYPE_NIMLOC	draft-ietf-nimrod-dns-01.txt
LDNS_RR_TYPE_SRV	SRV record RFC2782.
LDNS_RR_TYPE_ATMA	http://www.jhsoft.com/rfc/af-saa-0069.000.rtf
LDNS_RR_TYPE_NAPTR	RFC2915.
LDNS_RR_TYPE_KX	RFC2230.
LDNS_RR_TYPE_CERT	RFC2538.
LDNS_RR_TYPE_A6	RFC2874.
LDNS_RR_TYPE_DNAME	RFC2672.
LDNS_RR_TYPE_SINK	dnsind-kitchen-sink-02.txt
LDNS_RR_TYPE_OPT	Pseudo OPT record...
LDNS_RR_TYPE_APL	RFC3123.
LDNS_RR_TYPE_DS	RFC4034, RFC3658.
LDNS_RR_TYPE_SSHFP	SSH Key Fingerprint.
LDNS_RR_TYPE_IPSECKEY	IPsec Key.
LDNS_RR_TYPE_RRSIG	DNSSEC.
LDNS_RR_TYPE_NINFO	draft-reid-dnsext-zs
LDNS_RR_TYPE_RKEY	draft-reid-dnsext-rkey
LDNS_RR_TYPE_TALINK	draft-ietf-dnsop-trust-history
LDNS_RR_TYPE_CDNSKEY	RFC 7344.
LDNS_RR_TYPE_OPENPGPKEY	RFC 7344.
LDNS_RR_TYPE_EUI48	draft-jabley-dnsext-eui48-eui64-rrtypes
LDNS_RR_TYPE_MAILB	A request for mailbox-related records (MB, MG or MR)
LDNS_RR_TYPE_MAILA	A request for mail agent RRs (Obsolete - see MX)
LDNS_RR_TYPE_ANY	any type (wildcard)
LDNS_RR_TYPE_TA	DNSSEC Trust Authorities.

◆ sldns_enum_rdf_type

enum sldns_enum_rdf_type

The different types of RDATA fields.

Enumerator
LDNS_RDF_TYPE_NONE	none
LDNS_RDF_TYPE_DNAME	domain name
LDNS_RDF_TYPE_INT8	8 bits
LDNS_RDF_TYPE_INT16	16 bits
LDNS_RDF_TYPE_INT32	32 bits
LDNS_RDF_TYPE_A	A record.
LDNS_RDF_TYPE_AAAA	AAAA record.
LDNS_RDF_TYPE_STR	txt string
LDNS_RDF_TYPE_APL	apl data
LDNS_RDF_TYPE_B32_EXT	b32 string
LDNS_RDF_TYPE_B64	b64 string
LDNS_RDF_TYPE_HEX	hex string
LDNS_RDF_TYPE_NSEC	nsec type codes
LDNS_RDF_TYPE_TYPE	a RR type
LDNS_RDF_TYPE_CLASS	a class
LDNS_RDF_TYPE_CERT_ALG	certificate algorithm
LDNS_RDF_TYPE_ALG	a key algorithm
LDNS_RDF_TYPE_UNKNOWN	unknown types
LDNS_RDF_TYPE_TIME	time (32 bits)
LDNS_RDF_TYPE_PERIOD	period
LDNS_RDF_TYPE_TSIGTIME	tsig time 48 bits
LDNS_RDF_TYPE_HIP	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_INT16_DATA	variable length any type rdata where the length is specified by the first 2 bytes
LDNS_RDF_TYPE_SERVICE	protocol and port bitmaps
LDNS_RDF_TYPE_LOC	location data
LDNS_RDF_TYPE_WKS	well known services
LDNS_RDF_TYPE_NSAP	NSAP.
LDNS_RDF_TYPE_ATMA	ATMA.
LDNS_RDF_TYPE_IPSECKEY	IPSECKEY.
LDNS_RDF_TYPE_NSEC3_SALT	nsec3 hash salt
LDNS_RDF_TYPE_NSEC3_NEXT_OWNER	nsec3 base32 string (with length byte on wire
LDNS_RDF_TYPE_ILNP64	4 shorts represented as 4 * 16 bit hex numbers separated by colons. For NID and L64.
LDNS_RDF_TYPE_EUI48	6 * 8 bit hex numbers separated by dashes. For EUI48.
LDNS_RDF_TYPE_EUI64	8 * 8 bit hex numbers separated by dashes. For EUI64.
LDNS_RDF_TYPE_TAG	A non-zero sequence of US-ASCII letters and numbers in lower case. For CAA.
LDNS_RDF_TYPE_LONG_STR	A <character-string> encoding of the value field as specified [RFC1035], Section 5.1., encoded as remaining rdata. For CAA, URI.
LDNS_RDF_TYPE_TSIGERROR	TSIG extended 16bit error value.