/* $Id$ */

#ifndef ARES_NAMESER_H
#define ARES_NAMESER_H

/* Windows-only header file provided by liren@vivisimo.com to make his Windows
   port build */

#ifndef NETWARE
#include <process.h> /* for the _getpid() proto */
#endif  /* !NETWARE */
#include <sys/types.h>

#ifndef NETWARE

#define MAXHOSTNAMELEN 256

/* Structure for scatter/gather I/O.  */
struct iovec
{
    void *iov_base;     /* Pointer to data.  */
    size_t iov_len;     /* Length of data.  */
};

#ifndef __WATCOMC__
#define getpid() _getpid()
#endif

int ares_writev (SOCKET s, const struct iovec *vector, size_t count);
#define writev(s,vect,count)  ares_writev(s,vect,count)

#ifndef HAVE_GETTIMEOFDAY
struct timezone { int dummy; };
#endif

int ares_gettimeofday(struct timeval *tv, struct timezone *tz);
#define gettimeofday(tv,tz) ares_gettimeofday(tv,tz)

#endif  /* !NETWARE */

#define NS_CMPRSFLGS  0xc0
#define NS_IN6ADDRSZ  16
#define NS_INT16SZ    2
#define NS_INADDRSZ   4

  /* Flag bits indicating name compression. */
#define INDIR_MASK    NS_CMPRSFLGS

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 C_IN           ns_c_in

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;

#define T_PTR          ns_t_ptr
#define T_A            ns_t_a


#define NS_DEFAULTPORT        53      /* For both TCP and UDP. */
#define NAMESERVER_PORT        NS_DEFAULTPORT

#define NS_HFIXEDSZ   12      /* #/bytes of fixed data in header */
#define HFIXEDSZ      NS_HFIXEDSZ

#define NS_QFIXEDSZ   4       /* #/bytes of fixed data in query */
#define QFIXEDSZ       NS_QFIXEDSZ

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 NS_MAXLABEL   63
#define MAXLABEL       NS_MAXLABEL

#define NS_RRFIXEDSZ  10      /* #/bytes of fixed data in r record */
#define RRFIXEDSZ      NS_RRFIXEDSZ

#define T_CNAME                ns_t_cname

#define NS_MAXDNAME   256     /* maximum domain name */
#define MAXDNAME      NS_MAXDNAME

#define NS_MAXCDNAME  255     /* maximum compressed domain name */
#define MAXCDNAME     NS_MAXCDNAME

#define NS_PACKETSZ   512     /* maximum packet size */
#define PACKETSZ       NS_PACKETSZ

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;

#define SERVFAIL        ns_r_servfail
#define NOTIMP          ns_r_notimpl
#define REFUSED         ns_r_refused
#undef NOERROR /* it seems this is already defined in winerror.h */
#define NOERROR         ns_r_noerror
#define FORMERR         ns_r_formerr
#define NXDOMAIN        ns_r_nxdomain

#define C_CHAOS         ns_c_chaos
#define C_HS            ns_c_hs
#define C_NONE          ns_c_none
#define C_ANY           ns_c_any

#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

#endif /* ARES_NAMESER_H */
