gnunet_dnsparser_lib.h File Reference

API for helper library to parse DNS packets. More...

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Data Structures
struct	GNUNET_DNSPARSER_Query
	A DNS query. More...
struct	GNUNET_DNSPARSER_MxRecord
	Information from MX records (RFC 1035). More...
struct	GNUNET_DNSPARSER_SrvRecord
	Information from SRV records (RFC 2782). More...
struct	GNUNET_DNSPARSER_UriRecord
	Information from URI records (RFC 7553). More...
struct	GNUNET_DNSPARSER_CertRecord
	Information from CERT records (RFC 4034). More...
struct	GNUNET_DNSPARSER_SoaRecord
	Information from SOA records (RFC 1035). More...
struct	GNUNET_DNSPARSER_CaaRecord
	Information from CAA records (RFC 6844). More...
struct	GNUNET_DNSPARSER_RawRecord
	Binary record information (unparsed). More...
struct	GNUNET_DNSPARSER_Record
	A DNS response record. More...
struct	GNUNET_DNSPARSER_Packet
	Easy-to-process, parsed version of a DNS packet. More...

Macros
#define	GNUNET_DNSPARSER_MAX_LABEL_LENGTH   63
	Maximum length of a label in DNS.
#define	GNUNET_DNSPARSER_MAX_NAME_LENGTH   253
	Maximum length of a name in DNS.
#define	GNUNET_DNSPARSER_TYPE_ANY   0
	A few common DNS types.
#define	GNUNET_DNSPARSER_TYPE_A   1
#define	GNUNET_DNSPARSER_TYPE_NS   2
#define	GNUNET_DNSPARSER_TYPE_CNAME   5
#define	GNUNET_DNSPARSER_TYPE_SOA   6
#define	GNUNET_DNSPARSER_TYPE_PTR   12
#define	GNUNET_DNSPARSER_TYPE_MX   15
#define	GNUNET_DNSPARSER_TYPE_TXT   16
#define	GNUNET_DNSPARSER_TYPE_RP   17
#define	GNUNET_DNSPARSER_TYPE_AFSDB   18
#define	GNUNET_DNSPARSER_TYPE_SIG   24
#define	GNUNET_DNSPARSER_TYPE_KEY   25
#define	GNUNET_DNSPARSER_TYPE_AAAA   28
#define	GNUNET_DNSPARSER_TYPE_LOC   29
#define	GNUNET_DNSPARSER_TYPE_SRV   33
#define	GNUNET_DNSPARSER_TYPE_NAPTR   35
#define	GNUNET_DNSPARSER_TYPE_KX   36
#define	GNUNET_DNSPARSER_TYPE_CERT   37
#define	GNUNET_DNSPARSER_TYPE_DNAME   39
#define	GNUNET_DNSPARSER_TYPE_APL   42
#define	GNUNET_DNSPARSER_TYPE_DS   43
#define	GNUNET_DNSPARSER_TYPE_SSHFP   44
#define	GNUNET_DNSPARSER_TYPE_IPSECKEY   45
#define	GNUNET_DNSPARSER_TYPE_RRSIG   46
#define	GNUNET_DNSPARSER_TYPE_NSEC   47
#define	GNUNET_DNSPARSER_TYPE_DNSKEY   48
#define	GNUNET_DNSPARSER_TYPE_DHCID   49
#define	GNUNET_DNSPARSER_TYPE_NSEC3   50
#define	GNUNET_DNSPARSER_TYPE_NSEC3PARAM   51
#define	GNUNET_DNSPARSER_TYPE_TLSA   52
#define	GNUNET_DNSPARSER_TYPE_SMIMEA   53
#define	GNUNET_DNSPARSER_TYPE_HIP   55
#define	GNUNET_DNSPARSER_TYPE_CDS   59
#define	GNUNET_DNSPARSER_TYPE_CDNSKEY   60
#define	GNUNET_DNSPARSER_TYPE_OPENPGPKEY   61
#define	GNUNET_DNSPARSER_TYPE_TKEY   249
#define	GNUNET_DNSPARSER_TYPE_TSIG   250
#define	GNUNET_DNSPARSER_TYPE_ALL   255
#define	GNUNET_DNSPARSER_TYPE_URI   256
#define	GNUNET_DNSPARSER_TYPE_CAA   257
#define	GNUNET_DNSPARSER_TYPE_TA   32768

Enumerations
enum	GNUNET_DNSPARSER_CertType {   GNUNET_DNSPARSER_CERTTYPE_RESERVED = 0 , GNUNET_DNSPARSER_CERTTYPE_PKIX = 1 , GNUNET_DNSPARSER_CERTTYPE_SKPI = 2 , GNUNET_DNSPARSER_CERTTYPE_PGP = 3 ,   GNUNET_DNSPARSER_CERTTYPE_IPKIX = 4 , GNUNET_DNSPARSER_CERTTYPE_ISKPI = 5 , GNUNET_DNSPARSER_CERTTYPE_IPGP = 6 , GNUNET_DNSPARSER_CERTTYPE_ACPKIX = 7 ,   GNUNET_DNSPARSER_CERTTYPE_IACKPIX = 8 }
	DNS CERT types as defined in RFC 4398. More...
enum	GNUNET_DNSPARSER_CertAlgorithm {   GNUNET_DNSPARSER_CERTALGO_UNDEFINED = 0 , GNUNET_DNSPARSER_CERTALGO_RSAMD5 = 1 , GNUNET_DNSPARSER_CERTALGO_DH = 2 , GNUNET_DNSPARSER_CERTALGO_DSASHA = 3 ,   GNUNET_DNSPARSER_CERTALGO_RSRVD4 = 4 , GNUNET_DNSPARSER_CERTALGO_RSASHA = 5 , GNUNET_DNSPARSER_CERTALGO_DSANSEC3 = 6 , GNUNET_DNSPARSER_CERTALGO_RSANSEC3 = 7 ,   GNUNET_DNSPARSER_CERTALGO_RSASHA256 = 8 , GNUNET_DNSPARSER_CERTALGO_RSRVD9 = 9 , GNUNET_DNSPARSER_CERTALGO_RSASHA512 = 10 , GNUNET_DNSPARSER_CERTALGO_GOST_R34 = 12 ,   GNUNET_DNSPARSER_CERTALGO_ECDSA_P256SHA256 = 13 , GNUNET_DNSPARSER_CERTALGO_ECDSA_P384SHA384 = 14 }
	DNSCERT algorithms as defined in http://www.iana.org/assignments/ dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml, under dns-sec-alg-numbers-1. More...

Functions
int	GNUNET_DNSPARSER_check_label (const char *label)
	Check if a label in UTF-8 format can be coded into valid IDNA.
int	GNUNET_DNSPARSER_check_name (const char *name)
	Check if a hostname in UTF-8 format can be coded into valid IDNA.
struct GNUNET_DNSPARSER_Packet *	GNUNET_DNSPARSER_parse (const char *udp_payload, size_t udp_payload_length)
	Parse a UDP payload of a DNS packet in to a nice struct for further processing and manipulation.
void	GNUNET_DNSPARSER_free_packet (struct GNUNET_DNSPARSER_Packet *p)
	Free memory taken by a packet.
int	GNUNET_DNSPARSER_pack (const struct GNUNET_DNSPARSER_Packet *p, uint16_t max, char **buf, size_t *buf_length)
	Given a DNS packet p, generate the corresponding UDP payload.
int	GNUNET_DNSPARSER_builder_add_name (char *dst, size_t dst_len, size_t *off, const char *name)
	Add a DNS name to the UDP packet at the given location, converting the name to IDNA notation as necessary.
int	GNUNET_DNSPARSER_builder_add_query (char *dst, size_t dst_len, size_t *off, const struct GNUNET_DNSPARSER_Query *query)
	Add a DNS query to the UDP packet at the given location.
int	GNUNET_DNSPARSER_builder_add_mx (char *dst, size_t dst_len, size_t *off, const struct GNUNET_DNSPARSER_MxRecord *mx)
	Add an MX record to the UDP packet at the given location.
int	GNUNET_DNSPARSER_builder_add_soa (char *dst, size_t dst_len, size_t *off, const struct GNUNET_DNSPARSER_SoaRecord *soa)
	Add an SOA record to the UDP packet at the given location.
int	GNUNET_DNSPARSER_builder_add_cert (char *dst, size_t dst_len, size_t *off, const struct GNUNET_DNSPARSER_CertRecord *cert)
	Add CERT record to the UDP packet at the given location.
int	GNUNET_DNSPARSER_builder_add_srv (char *dst, size_t dst_len, size_t *off, const struct GNUNET_DNSPARSER_SrvRecord *srv)
	Add an SRV record to the UDP packet at the given location.
int	GNUNET_DNSPARSER_builder_add_uri (char *dst, size_t dst_len, size_t *off, const struct GNUNET_DNSPARSER_UriRecord *uri)
	Add an URI record to the UDP packet at the given location.
int	GNUNET_DNSPARSER_parse_record (const char *udp_payload, size_t udp_payload_length, size_t *off, struct GNUNET_DNSPARSER_Record *r)
	Parse a DNS record entry.
char *	GNUNET_DNSPARSER_parse_name (const char *udp_payload, size_t udp_payload_length, size_t *off)
	Parse name inside of a DNS query or record.
int	GNUNET_DNSPARSER_parse_query (const char *udp_payload, size_t udp_payload_length, size_t *off, struct GNUNET_DNSPARSER_Query *q)
	Parse a DNS query entry.
struct GNUNET_DNSPARSER_SoaRecord *	GNUNET_DNSPARSER_parse_soa (const char *udp_payload, size_t udp_payload_length, size_t *off)
	Parse a DNS SOA record.
struct GNUNET_DNSPARSER_CertRecord *	GNUNET_DNSPARSER_parse_cert (const char *udp_payload, size_t udp_payload_length, size_t *off)
	Parse a DNS CERT record.
struct GNUNET_DNSPARSER_MxRecord *	GNUNET_DNSPARSER_parse_mx (const char *udp_payload, size_t udp_payload_length, size_t *off)
	Parse a DNS MX record.
struct GNUNET_DNSPARSER_SrvRecord *	GNUNET_DNSPARSER_parse_srv (const char *udp_payload, size_t udp_payload_length, size_t *off)
	Parse a DNS SRV record.
struct GNUNET_DNSPARSER_UriRecord *	GNUNET_DNSPARSER_parse_uri (const char *udp_payload, size_t udp_payload_length, size_t *off)
	Parse a DNS URI record.
struct GNUNET_DNSPARSER_Record *	GNUNET_DNSPARSER_duplicate_record (const struct GNUNET_DNSPARSER_Record *r)
	Duplicate (deep-copy) the given DNS record.
struct GNUNET_DNSPARSER_SoaRecord *	GNUNET_DNSPARSER_duplicate_soa_record (const struct GNUNET_DNSPARSER_SoaRecord *r)
	Duplicate (deep-copy) the given DNS record.
struct GNUNET_DNSPARSER_CertRecord *	GNUNET_DNSPARSER_duplicate_cert_record (const struct GNUNET_DNSPARSER_CertRecord *r)
	Duplicate (deep-copy) the given DNS record.
struct GNUNET_DNSPARSER_MxRecord *	GNUNET_DNSPARSER_duplicate_mx_record (const struct GNUNET_DNSPARSER_MxRecord *r)
	Duplicate (deep-copy) the given DNS record.
struct GNUNET_DNSPARSER_SrvRecord *	GNUNET_DNSPARSER_duplicate_srv_record (const struct GNUNET_DNSPARSER_SrvRecord *r)
	Duplicate (deep-copy) the given DNS record.
struct GNUNET_DNSPARSER_UriRecord *	GNUNET_DNSPARSER_duplicate_uri_record (const struct GNUNET_DNSPARSER_UriRecord *r)
	Duplicate (deep-copy) the given DNS record.
void	GNUNET_DNSPARSER_free_record (struct GNUNET_DNSPARSER_Record *r)
	Free the given DNS record.
void	GNUNET_DNSPARSER_free_mx (struct GNUNET_DNSPARSER_MxRecord *mx)
	Free MX information record.
void	GNUNET_DNSPARSER_free_srv (struct GNUNET_DNSPARSER_SrvRecord *srv)
	Free SRV information record.
void	GNUNET_DNSPARSER_free_uri (struct GNUNET_DNSPARSER_UriRecord *uri)
	Free URI information record.
void	GNUNET_DNSPARSER_free_soa (struct GNUNET_DNSPARSER_SoaRecord *soa)
	Free SOA information record.
void	GNUNET_DNSPARSER_free_cert (struct GNUNET_DNSPARSER_CertRecord *cert)
	Free CERT information record.
char *	GNUNET_DNSPARSER_bin_to_hex (const void *data, size_t data_size)
	Convert a block of binary data to HEX.
size_t	GNUNET_DNSPARSER_hex_to_bin (const char *hex, void *data)
	Convert a HEX string to block of binary data.

Detailed Description

API for helper library to parse DNS packets.

Definition in file gnunet_dnsparser_lib.h.