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/* $OpenBSD: dnsdefs.h,v 1.2 2011/03/27 17:39:17 eric Exp $ */
/*
* Copyright (c) 2009 Eric Faurot <eric@faurot.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define PACKET_MAXLEN 512
#define HEADER_LEN 12
#define DOMAIN_MAXLEN 255
#define LABEL_MAXLEN 63
#define OPCODE_SHIFT 11
#define Z_SHIFT 4
#define QR_MASK (0x1 << 15)
#define OPCODE_MASK (0xf << 11)
#define AA_MASK (0x1 << 10)
#define TC_MASK (0x1 << 9)
#define RD_MASK (0x1 << 8)
#define RA_MASK (0x1 << 7)
#define Z_MASK (0x7 << 4)
#define RCODE_MASK (0xf)
#define OPCODE(v) ((v) & OPCODE_MASK)
#define RCODE(v) ((v) & RCODE_MASK)
#define OP_QUERY (0)
#define OP_IQUERY (0x1 << 11) /* obsolete rfc3425*/
#define OP_STATUS (0x2 << 11)
#define OP_NOTIFY (0x4 << 11) /* rfc1996 */
#define OP_UPDATE (0x5 << 11) /* rfc2136 */
#define NOERR 0
#define ERR_FORMAT 1
#define ERR_SERVER 2
#define ERR_NAME 3
#define ERR_NOFUNC 4
#define ERR_REFUSED 5
#define ERR_YXDOMAIN 6 /* rfc2136 */
#define ERR_YXRRSET 7 /* rfc2136 */
#define ERR_NXRRSET 8 /* rfc2136 */
#define ERR_NOEAUTH 9 /* rfc2136 */
#define ERR_NOTZONE 10 /* rfc2136 */
#define ERR_BADVERS 16 /* rfc2671 */
#define ERR_BADSIG 16 /* rfc2845 */
#define ERR_BADKEY 17 /* rfc2845 */
#define ERR_BADTIME 18 /* rfc2845 */
#define ERR_BADMODE 19 /* rfc2930 */
#define ERR_BADNAME 20 /* rfc2930 */
#define ERR_BADALG 21 /* rfc2930 */
#define ERR_BADTRUNC 22 /* rfc4635 */
/* TYPE */
/* rfc1035 */
#define T_A 1 /* host address */
#define T_NS 2 /* authoritative name server */
#define T_MD 3 /* mail destination (Obsolete - use MX) */
#define T_MF 4 /* mail forwarder (Obsolete - use MX) */
#define T_CNAME 5 /* canonical name for an alias */
#define T_SOA 6 /* marks the start of a zone of authority */
#define T_MB 7 /* mailbox domain name (EXPERIMENTAL) */
#define T_MG 8 /* mail group member (EXPERIMENTAL) */
#define T_MR 9 /* mail rename domain name (EXPERIMENTAL) */
#define T_NULL 10 /* null RR (EXPERIMENTAL) */
#define T_WKS 11 /* well known service description */
#define T_PTR 12 /* domain name pointer */
#define T_HINFO 13 /* host information */
#define T_MINFO 14 /* mailbox or mail list information */
#define T_MX 15 /* mail exchange */
#define T_TXT 16 /* text strings */
/* rfc1183 */
#define T_RP 17 /* responsible person */
#define T_AFSDB 18 /* AFS Database location */
#define T_X25 19 /* X25 PSDN address */
#define T_ISDN 20 /* ISDN address */
#define T_RT 21 /* route through */
#define T_NSAP 22 /* NSAP address rfc1706 */
#define T_NSAPPTR 23 /* rfc1348 */
#define T_SIG 24 /* security signature rfc2931, rfc4034 */
#define T_KEY 25 /* security key rfc3445, rfc4034 */
#define T_PX 26 /* X.400 mail mapping info rfc2163 */
#define T_GPOS 27 /* geographical position rfc1712 */
#define T_AAAA 28 /* IPv6 address rfc3596 */
#define T_LOC 29 /* location information rfc1876 */
#define T_NXT 30 /* next domain (obsolete) rfc2535 */
#define T_EID 31 /* endpoint identifier */
#define T_NIMLOC 32 /* nimrod locator */
#define T_NB 32 /* NetBIOS general name service rfc1002 */
#define T_SRV 33 /* server selection rfc2052, rfc2782, */
#define T_NBSTAT 33 /* NetBIOS node status rfc1002 */
#define T_ATMA 34 /* atm address */
#define T_NAPTR 35 /* naming authority pointer rfc3403 */
#define T_KX 36 /* key exchange rfc2230 */
#define T_CERT 37 /* rfc2538, rfc4398 */
#define T_A6 38 /* rfc2874, rfc3226 */
#define T_DNAME 39 /* rfc2672 */
#define T_SINK 40 /* */
#define T_OPT 41 /* rfc2671 */
#define T_APL 42 /* rfc3123 */
#define T_DS 43 /* delegation signer rfc3658 */
#define T_SSHFP 44 /* ssh key fingerprint rfc4255 */
#define T_IPSECKEY 45 /* rfc4025 */
#define T_RRSIG 46 /* rfc3755 */
#define T_NSEC 47 /* NextSECure rfc3755, rfc3845 */
#define T_DNSKEY 48 /* rfc3755 */
#define T_DHCID 49 /* DHCP identifier rfc4701 */
#define T_NSEC3 50 /* rfc5155 */
#define T_NSEC3PARAM 51 /* rfc5155 */
#define T_HIP 55 /* Host Identity protocol rfc5205 */
#define T_NINFO 56
#define T_RKEY 57
#define T_SPF 99 /* sender policy framework rfc4408 */
#define T_UINFO 100
#define T_UID 101
#define T_GID 102
#define T_UNSPEC 103
#define T_TKEY 249 /* rfc2930 */
#define T_TSIG 250 /* transaction signature rfc2845, rfc3645 */
#define T_IXFR 251 /* incremental transfer rfc1995 */
/* request only */
#define T_AXFR 252 /* transfer of an entire zone rfc1035 */
#define T_MAILB 253 /* mailbox-related records (MB, MG or MR) rfc1035 */
#define T_MAILA 254 /* mail agent RRs (Obsolete - see MX) rfc1035 */
#define T_ALL 255 /* all records rfc1035 */
#define T_DNSSECTA 32768 /* DNSSEC trust authorities */
#define T_DNSSECLV 32769 /* lookaside validation rfc4431, rfc5074 */
/* CLASS */
/* 0 reserved rfc5395 */
#define C_IN 1 /* Internet */
#define C_CS 2 /* CSNET (obsolete) */
#define C_CH 3 /* Chaos */
#define C_HS 4 /* Hesiod */
#define C_NONE 254 /* rfc2136 */
#define C_ANY 255 /* */
#define C_PRIV0 65280 /* rfc5395 */
#define C_PRIV1 65534 /* rfc5395 */
/* 65535 reserved rfc5395 */
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