dns.h File Reference

Low level DNS message parsing and packetization. More...

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Data Structures
struct	pj_dns_hdr
struct	pj_dns_parsed_query
struct	pj_dns_parsed_rr
union	pj_dns_parsed_rr::rdata
struct	pj_dns_parsed_rr::rdata::srv
struct	pj_dns_parsed_rr::rdata::cname
struct	pj_dns_parsed_rr::rdata::ns
struct	pj_dns_parsed_rr::rdata::ptr
struct	pj_dns_parsed_rr::rdata::a
struct	pj_dns_parsed_rr::rdata::aaaa
struct	pj_dns_parsed_packet

Macros
#define	PJ_DNS_SET_RCODE(c)   ((pj_uint16_t)((c) & 0x0F))
#define	PJ_DNS_SET_RA(on)   ((pj_uint16_t)((on) << 7))
#define	PJ_DNS_SET_RD(on)   ((pj_uint16_t)((on) << 8))
#define	PJ_DNS_SET_TC(on)   ((pj_uint16_t)((on) << 9))
#define	PJ_DNS_SET_AA(on)   ((pj_uint16_t)((on) << 10))
#define	PJ_DNS_SET_OPCODE(o)   ((pj_uint16_t)((o) << 11))
#define	PJ_DNS_SET_QR(on)   ((pj_uint16_t)((on) << 15))
#define	PJ_DNS_GET_RCODE(val)   (((val) & PJ_DNS_SET_RCODE(0x0F)) >> 0)
#define	PJ_DNS_GET_RA(val)   (((val) & PJ_DNS_SET_RA(1)) >> 7)
#define	PJ_DNS_GET_RD(val)   (((val) & PJ_DNS_SET_RD(1)) >> 8)
#define	PJ_DNS_GET_TC(val)   (((val) & PJ_DNS_SET_TC(1)) >> 9)
#define	PJ_DNS_GET_AA(val)   (((val) & PJ_DNS_SET_AA(1)) >> 10)
#define	PJ_DNS_GET_OPCODE(val)   (((val) & PJ_DNS_SET_OPCODE(0x0F)) >> 11)
#define	PJ_DNS_GET_QR(val)   (((val) & PJ_DNS_SET_QR(1)) >> 15)

Enumerations
enum	{ PJ_DNS_CLASS_IN = 1 }
enum	pj_dns_type {   PJ_DNS_TYPE_A = 1 , PJ_DNS_TYPE_NS = 2 , PJ_DNS_TYPE_MD = 3 , PJ_DNS_TYPE_MF = 4 ,   PJ_DNS_TYPE_CNAME = 5 , PJ_DNS_TYPE_SOA = 6 , PJ_DNS_TYPE_MB = 7 , PJ_DNS_TYPE_MG = 8 ,   PJ_DNS_TYPE_MR = 9 , PJ_DNS_TYPE_NULL = 10 , PJ_DNS_TYPE_WKS = 11 , PJ_DNS_TYPE_PTR = 12 ,   PJ_DNS_TYPE_HINFO = 13 , PJ_DNS_TYPE_MINFO = 14 , PJ_DNS_TYPE_MX = 15 , PJ_DNS_TYPE_TXT = 16 ,   PJ_DNS_TYPE_RP = 17 , PJ_DNS_TYPE_AFSB = 18 , PJ_DNS_TYPE_X25 = 19 , PJ_DNS_TYPE_ISDN = 20 ,   PJ_DNS_TYPE_RT = 21 , PJ_DNS_TYPE_NSAP = 22 , PJ_DNS_TYPE_NSAP_PTR = 23 , PJ_DNS_TYPE_SIG = 24 ,   PJ_DNS_TYPE_KEY = 25 , PJ_DNS_TYPE_PX = 26 , PJ_DNS_TYPE_GPOS = 27 , PJ_DNS_TYPE_AAAA = 28 ,   PJ_DNS_TYPE_LOC = 29 , PJ_DNS_TYPE_NXT = 30 , PJ_DNS_TYPE_EID = 31 , PJ_DNS_TYPE_NIMLOC = 32 ,   PJ_DNS_TYPE_SRV = 33 , PJ_DNS_TYPE_ATMA = 34 , PJ_DNS_TYPE_NAPTR = 35 , PJ_DNS_TYPE_KX = 36 ,   PJ_DNS_TYPE_CERT = 37 , PJ_DNS_TYPE_A6 = 38 , PJ_DNS_TYPE_DNAME = 39 , PJ_DNS_TYPE_OPT = 41 ,   PJ_DNS_TYPE_APL = 42 , PJ_DNS_TYPE_DS = 43 , PJ_DNS_TYPE_SSHFP = 44 , PJ_DNS_TYPE_IPSECKEY = 45 ,   PJ_DNS_TYPE_RRSIG = 46 , PJ_DNS_TYPE_NSEC = 47 , PJ_DNS_TYPE_DNSKEY = 48 }
enum	pj_dns_rcode {   PJ_DNS_RCODE_FORMERR = 1 , PJ_DNS_RCODE_SERVFAIL = 2 , PJ_DNS_RCODE_NXDOMAIN = 3 , PJ_DNS_RCODE_NOTIMPL = 4 ,   PJ_DNS_RCODE_REFUSED = 5 , PJ_DNS_RCODE_YXDOMAIN = 6 , PJ_DNS_RCODE_YXRRSET = 7 , PJ_DNS_RCODE_NXRRSET = 8 ,   PJ_DNS_RCODE_NOTAUTH = 9 , PJ_DNS_RCODE_NOTZONE = 10 }
enum	pj_dns_dup_options { PJ_DNS_NO_QD = 1 , PJ_DNS_NO_ANS = 2 , PJ_DNS_NO_NS = 4 , PJ_DNS_NO_AR = 8 }

Functions
pj_status_t	pj_dns_make_query (void *packet, unsigned *size, pj_uint16_t id, int qtype, const pj_str_t *name)
pj_status_t	pj_dns_parse_packet (pj_pool_t *pool, const void *packet, unsigned size, pj_dns_parsed_packet **p_res)
void	pj_dns_packet_dup (pj_pool_t *pool, const pj_dns_parsed_packet *p, unsigned options, pj_dns_parsed_packet **p_dst)
const char *	pj_dns_get_type_name (int type)
void	pj_dns_init_srv_rr (pj_dns_parsed_rr *rec, const pj_str_t *res_name, unsigned dnsclass, unsigned ttl, unsigned prio, unsigned weight, unsigned port, const pj_str_t *target)
void	pj_dns_init_cname_rr (pj_dns_parsed_rr *rec, const pj_str_t *res_name, unsigned dnsclass, unsigned ttl, const pj_str_t *name)
void	pj_dns_init_a_rr (pj_dns_parsed_rr *rec, const pj_str_t *res_name, unsigned dnsclass, unsigned ttl, const pj_in_addr *ip_addr)
void	pj_dns_init_aaaa_rr (pj_dns_parsed_rr *rec, const pj_str_t *res_name, unsigned dnsclass, unsigned ttl, const pj_in6_addr *ip_addr)
void	pj_dns_dump_packet (const pj_dns_parsed_packet *res)

Detailed Description

Low level DNS message parsing and packetization.