#ifndef _ARPA_NAMESER_H #define _ARPA_NAMESER_H #include #include __BEGIN_DECLS #define NS_PACKETSZ 512 /* maximum packet size */ #define NS_MAXDNAME 1025 /* maximum domain name */ #define NS_MAXCDNAME 255 /* maximum compressed domain name */ #define NS_MAXLABEL 63 /* maximum length of domain label */ #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ #define NS_INADDRSZ 4 /* IPv4 T_A */ #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ /* * Currently defined type values for resources and queries. */ typedef enum __ns_type { ns_t_invalid = 0, /* Cookie. */ ns_t_a = 1, /* RFC 1035. Host address. */ ns_t_ns = 2, /* RFC 1035. Authoritative server. */ ns_t_md = 3, /* (obsolete, use MX) Mail destination. */ ns_t_mf = 4, /* (obsolete, use MX) Mail forwarder. */ ns_t_cname = 5, /* RFC 1035. Canonical name. */ ns_t_soa = 6, /* RFC 1035. Start of authority zone. */ ns_t_mb = 7, /* Mailbox domain name. */ ns_t_mg = 8, /* Mail group member. */ ns_t_mr = 9, /* Mail rename name. */ ns_t_null = 10, /* Null resource record. */ ns_t_wks = 11, /* RFC 974. Well known service. */ ns_t_ptr = 12, /* RFC 1035. Domain name pointer. */ ns_t_hinfo = 13, /* RFC 1035. Host information. */ ns_t_minfo = 14, /* Mailbox information. */ ns_t_mx = 15, /* RFC 1035. Mail routing information. */ ns_t_txt = 16, /* RFC 1035. Text strings. */ ns_t_rp = 17, /* RFC 1883. Responsible person. */ ns_t_afsdb = 18, /* RFC 1183. AFS cell database. */ ns_t_x25 = 19, /* X_25 calling address. */ ns_t_isdn = 20, /* ISDN calling address. */ ns_t_rt = 21, /* Router. */ ns_t_nsap = 22, /* NSAP address. */ ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ ns_t_sig = 24, /* RFC 2535. Security signature. */ ns_t_key = 25, /* RFC 2535. Security key. */ ns_t_px = 26, /* X.400 mail mapping. */ ns_t_gpos = 27, /* Geographical position (withdrawn). */ ns_t_aaaa = 28, /* RFC3596. IP6 Address. */ ns_t_loc = 29, /* RFC 1876. Location Information. */ ns_t_nxt = 30, /* Next domain (security). */ ns_t_eid = 31, /* Endpoint identifier. */ ns_t_nimloc = 32, /* Nimrod Locator. */ ns_t_srv = 33, /* RFC 1876. Server Selection. */ ns_t_atma = 34, /* ATM Address */ ns_t_naptr = 35, /* RFC 3403. Naming Authority PoinTeR */ ns_t_kx = 36, /* RFC 2230. Key Exchange */ ns_t_cert = 37, /* RFC 4398. Certification record */ ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ ns_t_dname = 39, /* RFC 2672. Non-terminal DNAME (for IPv6) */ ns_t_sink = 40, /* Kitchen sink (experimental) */ ns_t_opt = 41, /* EDNS0 option (meta-RR) */ ns_t_apl = 42, /* RFC 3123. Address Prefix List */ ns_t_ds = 43, /* RFC 4034. Delegation Signer */ ns_t_sshfp = 44, /* RFC 4255. SSH public key fingerprint */ ns_t_ipseckey = 45, /* RFC 4025. IPsec key */ ns_t_rrsig = 46, /* RFC 4034. DNSSEC signature */ ns_t_nsec = 47, /* RFC 4034. Next-Secure record */ ns_t_dnskey = 48, /* RFC 4034. DNS key record */ ns_t_dhcid = 49, /* RFC 4701. DHCP identifier */ ns_t_nsec3 = 50, /* RFC 5155. NSEC record version 3 or NSEC hashed */ ns_t_nsec3param = 51, /* RFC 5155. NSEC3 parameters */ ns_t_tlsa = 52, /* RFC 6698. For DANE. TLSA certificate association */ ns_t_smimea = 53, ns_t_hip = 55, /* RFC 5205. Host identity protocol */ ns_t_ninfo = 56, ns_t_rkey = 57, ns_t_talink = 58, ns_t_cds = 59, /* RFC 7344. Child DS */ ns_t_cdnskey = 60, /* RFC 7344. Child DNSKEY */ ns_t_openpgpkey = 61, ns_t_csync = 62, ns_t_spf = 99, ns_t_uinfo = 100, ns_t_uid = 101, ns_t_gid = 102, ns_t_unspec = 103, ns_t_nid = 104, ns_t_l32 = 105, ns_t_l64 = 106, ns_t_lp = 107, ns_t_eui48 = 108, ns_t_eui64 = 109, ns_t_tkey = 249, /* RFC 2930. TSIG. Secret Key. */ ns_t_tsig = 250, /* RFC 2845. Transaction signature. */ ns_t_ixfr = 251, /* Incremental zone transfer. */ ns_t_axfr = 252, /* Transfer zone of authority. */ ns_t_mailb = 253, /* Transfer mailbox records. */ ns_t_maila = 254, /* Transfer mail agent records. */ ns_t_any = 255, /* Wildcard match. */ ns_t_uri = 256, /* RFC 7553 */ ns_t_caa = 257, /* RFC 8659. Certification Authority Authorization */ ns_t_avc = 258, /* some proprietary obsolete Cisco shit */ ns_t_ta = 32768, /* for DNSSEC, */ ns_t_dlv = 32769, /* for DNSSEC, RFC 4431 */ ns_t_max = 65536 } ns_type; /* * Values for class field */ typedef enum __ns_class { ns_c_invalid = 0, /* Cookie. */ ns_c_in = 1, /* Internet. */ ns_c_2 = 2, /* unallocated/unsupported. */ ns_c_chaos = 3, /* MIT Chaos-net. */ ns_c_hs = 4, /* MIT Hesiod. */ /* Query class values which do not appear in resource records */ ns_c_none = 254, /* for prereq. sections in update requests */ ns_c_any = 255, /* Wildcard match. */ ns_c_max = 65536 } ns_class; /* Certificate type values in CERT resource records. */ typedef enum __ns_cert_types { cert_t_pkix = 1, /*%< PKIX (X.509v3) */ cert_t_spki = 2, /*%< SPKI */ cert_t_pgp = 3, /*%< PGP */ cert_t_url = 253, /*%< URL private type */ cert_t_oid = 254 /*%< OID private type */ } ns_cert_types; /* * Currently defined opcodes. */ typedef enum __ns_opcode { ns_o_query = 0, /* Standard query. */ ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ ns_o_status = 2, /* Name server status query (unsupported). */ /* Opcode 3 is undefined/reserved. */ ns_o_notify = 4, /* Zone change notification. */ ns_o_update = 5, /* Zone update message. */ ns_o_max = 6 } ns_opcode; /* * Currently defined response codes. */ typedef enum __ns_rcode { ns_r_noerror = 0, /* No error occurred. */ ns_r_formerr = 1, /* Format error. */ ns_r_servfail = 2, /* Server failure. */ ns_r_nxdomain = 3, /* Name error. */ ns_r_notimpl = 4, /* Unimplemented. */ ns_r_refused = 5, /* Operation refused. */ /* these are for BIND_UPDATE */ ns_r_yxdomain = 6, /* Name exists */ ns_r_yxrrset = 7, /* RRset exists */ ns_r_nxrrset = 8, /* RRset does not exist */ ns_r_notauth = 9, /* Not authoritative for zone */ ns_r_notzone = 10, /* Zone of record different from zone section */ ns_r_max = 11, /* The following are TSIG extended errors */ ns_r_badsig = 16, ns_r_badkey = 17, ns_r_badtime = 18 } ns_rcode; typedef struct { unsigned id :16; /* query identification number */ #if BYTE_ORDER == BIG_ENDIAN /* fields in third byte */ unsigned qr: 1; /* response flag */ unsigned opcode: 4; /* purpose of message */ unsigned aa: 1; /* authoritive answer */ unsigned tc: 1; /* truncated message */ unsigned rd: 1; /* recursion desired */ /* fields in fourth byte */ unsigned ra: 1; /* recursion available */ unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ unsigned ad: 1; /* authentic data from named */ unsigned cd: 1; /* checking disabled by resolver */ unsigned rcode :4; /* response code */ #endif #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN /* fields in third byte */ unsigned rd :1; /* recursion desired */ unsigned tc :1; /* truncated message */ unsigned aa :1; /* authoritive answer */ unsigned opcode :4; /* purpose of message */ unsigned qr :1; /* response flag */ /* fields in fourth byte */ unsigned rcode :4; /* response code */ unsigned cd: 1; /* checking disabled by resolver */ unsigned ad: 1; /* authentic data from named */ unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ unsigned ra :1; /* recursion available */ #endif /* remaining bytes */ unsigned qdcount :16; /* number of question entries */ unsigned ancount :16; /* number of answer entries */ unsigned nscount :16; /* number of authority entries */ unsigned arcount :16; /* number of resource entries */ } HEADER; #define PACKETSZ NS_PACKETSZ #define MAXDNAME NS_MAXDNAME #define MAXCDNAME NS_MAXCDNAME #define MAXLABEL NS_MAXLABEL #define HFIXEDSZ NS_HFIXEDSZ #define QFIXEDSZ NS_QFIXEDSZ #define RRFIXEDSZ NS_RRFIXEDSZ #define INT32SZ NS_INT32SZ #define INT16SZ NS_INT16SZ #define INADDRSZ NS_INADDRSZ #define IN6ADDRSZ NS_IN6ADDRSZ #define INDIR_MASK NS_CMPRSFLGS #define NAMESERVER_PORT NS_DEFAULTPORT #define S_ZONE ns_s_zn #define S_PREREQ ns_s_pr #define S_UPDATE ns_s_ud #define S_ADDT ns_s_ar #define QUERY ns_o_query #define IQUERY ns_o_iquery #define STATUS ns_o_status #define NS_NOTIFY_OP ns_o_notify #define NS_UPDATE_OP ns_o_update #define NOERROR ns_r_noerror #define FORMERR ns_r_formerr #define SERVFAIL ns_r_servfail #define NXDOMAIN ns_r_nxdomain #define NOTIMP ns_r_notimpl #define REFUSED ns_r_refused #define YXDOMAIN ns_r_yxdomain #define YXRRSET ns_r_yxrrset #define NXRRSET ns_r_nxrrset #define NOTAUTH ns_r_notauth #define NOTZONE ns_r_notzone #define DELETE ns_uop_delete #define ADD ns_uop_add #define T_A ns_t_a #define T_NS ns_t_ns #define T_MD ns_t_md #define T_MF ns_t_mf #define T_CNAME ns_t_cname #define T_SOA ns_t_soa #define T_MB ns_t_mb #define T_MG ns_t_mg #define T_MR ns_t_mr #define T_NULL ns_t_null #define T_WKS ns_t_wks #define T_PTR ns_t_ptr #define T_HINFO ns_t_hinfo #define T_MINFO ns_t_minfo #define T_MX ns_t_mx #define T_TXT ns_t_txt #define T_RP ns_t_rp #define T_AFSDB ns_t_afsdb #define T_X25 ns_t_x25 #define T_ISDN ns_t_isdn #define T_RT ns_t_rt #define T_NSAP ns_t_nsap #define T_NSAP_PTR ns_t_nsap_ptr #define T_SIG ns_t_sig #define T_KEY ns_t_key #define T_PX ns_t_px #define T_GPOS ns_t_gpos #define T_AAAA ns_t_aaaa #define T_LOC ns_t_loc #define T_NXT ns_t_nxt #define T_EID ns_t_eid #define T_NIMLOC ns_t_nimloc #define T_SRV ns_t_srv #define T_ATMA ns_t_atma #define T_NAPTR ns_t_naptr #define T_TSIG ns_t_tsig #define T_IXFR ns_t_ixfr #define T_AXFR ns_t_axfr #define T_MAILB ns_t_mailb #define T_MAILA ns_t_maila #define T_ANY ns_t_any #define C_IN ns_c_in #define C_CHAOS ns_c_chaos #define C_HS ns_c_hs #define C_NONE ns_c_none #define C_ANY ns_c_any __END_DECLS #endif