AsyncResolverNameSer.h

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/*  AsyncResolverNameSer.h - nameser.h
    Copyright (C) 2004 Mark Weaver
    Written by Mark Weaver <mark@npsl.co.uk>

    Part of the Open-Win32 library.
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the
    Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA  02111-1307, USA.
*/

/* Copyright 1998 by the Massachusetts Institute of Technology.
 *
 * Permission to use, copy, modify, and distribute this
 * software and its documentation for any purpose and without
 * fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting
 * documentation, and that the name of M.I.T. not be used in
 * advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 */

#ifndef OW32_AsyncResolverNameSer_h
#define OW32_AsyncResolverNameSer_h

/*
 * Define constants based on RFC 883, RFC 1034, RFC 1035
 */
#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. */

#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 MAXPACKET       PACKETSZ

/*
 * 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;

#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

/*
 * 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;

/*
 * Currently defined type values for resources and queries.
 */
typedef enum __ns_type {
    ns_t_invalid = 0,   /* Cookie. */
    ns_t_a = 1,         /* Host address. */
    ns_t_ns = 2,        /* Authoritative server. */
    ns_t_md = 3,        /* Mail destination. */
    ns_t_mf = 4,        /* Mail forwarder. */
    ns_t_cname = 5,     /* Canonical name. */
    ns_t_soa = 6,       /* 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,      /* Well known service. */
    ns_t_ptr = 12,      /* Domain name pointer. */
    ns_t_hinfo = 13,    /* Host information. */
    ns_t_minfo = 14,    /* Mailbox information. */
    ns_t_mx = 15,       /* Mail routing information. */
    ns_t_txt = 16,      /* Text strings. */
    ns_t_rp = 17,       /* Responsible person. */
    ns_t_afsdb = 18,    /* 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,      /* Security signature. */
    ns_t_key = 25,      /* Security key. */
    ns_t_px = 26,       /* X.400 mail mapping. */
    ns_t_gpos = 27,     /* Geographical position (withdrawn). */
    ns_t_aaaa = 28,     /* Ip6 Address. */
    ns_t_loc = 29,      /* 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,      /* Server Selection. */
    ns_t_atma = 34,     /* ATM Address */
    ns_t_naptr = 35,    /* Naming Authority PoinTeR */
    ns_t_kx = 36,       /* Key Exchange */
    ns_t_cert = 37,     /* Certification record */
    ns_t_a6 = 38,       /* IPv6 address (deprecates AAAA) */
    ns_t_dname = 39,    /* Non-terminal DNAME (for IPv6) */
    ns_t_sink = 40,     /* Kitchen sink (experimentatl) */
    ns_t_opt = 41,      /* EDNS0 option (meta-RR) */
    ns_t_tsig = 250,    /* 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_zxfr = 256,    /* BIND-specific, nonstandard. */
    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;

#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_ANY       ns_c_any

#undef NOERROR
#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

#endif /* OW32_AsyncResolverNameSer_h */

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