resolv/netdb.h

   1 /*
   2  * ++Copyright++ 1980, 1983, 1988, 1993
   3  * -
   4  * Copyright (c) 1980, 1983, 1988, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  * -
  35  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
  36  *
  37  * Permission to use, copy, modify, and distribute this software for any
  38  * purpose with or without fee is hereby granted, provided that the above
  39  * copyright notice and this permission notice appear in all copies, and that
  40  * the name of Digital Equipment Corporation not be used in advertising or
  41  * publicity pertaining to distribution of the document or software without
  42  * specific, written prior permission.
  43  *
  44  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  45  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  46  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
  47  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  48  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  49  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  50  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  51  * SOFTWARE.
  52  * -
  53  * --Copyright--
  54  */
  55
  56 /*
  57  *      @(#)netdb.h     8.1 (Berkeley) 6/2/93
  58  *      $Id$
  59  */
  60
  61 #ifndef _NETDB_H_
  62 #define _NETDB_H_
  63
  64 #include <sys/param.h>
  65 #if (!defined(BSD)) || (BSD < 199306)
  66 # include <sys/bitypes.h>
  67 #endif
  68 #include <sys/cdefs.h>
  69
  70 #define _PATH_HEQUIV            "/etc/hosts.equiv"
  71 #define _PATH_HOSTS             "/etc/hosts"
  72 #define _PATH_NETWORKS          "/etc/networks"
  73 #define _PATH_NSSWITCH_CONF     "/etc/nsswitch.conf"
  74 #define _PATH_PROTOCOLS         "/etc/protocols"
  75 #define _PATH_SERVICES          "/etc/services"
  76
  77 extern int h_errno;
  78
  79 /*
  80  * Structures returned by network data base library.  All addresses are
  81  * supplied in host order, and returned in network order (suitable for
  82  * use in system calls).
  83  */
  84 struct  hostent {
  85         char    *h_name;        /* official name of host */
  86         char    **h_aliases;    /* alias list */
  87         int     h_addrtype;     /* host address type */
  88         int     h_length;       /* length of address */
  89         char    **h_addr_list;  /* list of addresses from name server */
  90 #define h_addr  h_addr_list[0]  /* address, for backward compatiblity */
  91 };
  92
  93 /*
  94  * Assumption here is that a network number
  95  * fits in an unsigned long -- probably a poor one.
  96  */
  97 struct  netent {
  98         char            *n_name;        /* official name of net */
  99         char            **n_aliases;    /* alias list */
 100         int             n_addrtype;     /* net address type */
 101         unsigned long   n_net;          /* network # */
 102 };
 103
 104 struct  servent {
 105         char    *s_name;        /* official service name */
 106         char    **s_aliases;    /* alias list */
 107         int     s_port;         /* port # */
 108         char    *s_proto;       /* protocol to use */
 109 };
 110
 111 struct  protoent {
 112         char    *p_name;        /* official protocol name */
 113         char    **p_aliases;    /* alias list */
 114         int     p_proto;        /* protocol # */
 115 };
 116
 117 /*
 118  * Error return codes from gethostbyname() and gethostbyaddr()
 119  * (left in extern int h_errno).
 120  */
 121
 122 #define NETDB_INTERNAL  -1      /* see errno */
 123 #define NETDB_SUCCESS   0       /* no problem */
 124 #define HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */
 125 #define TRY_AGAIN       2 /* Non-Authoritive Host not found, or SERVERFAIL */
 126 #define NO_RECOVERY     3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
 127 #define NO_DATA         4 /* Valid name, no data record of requested type */
 128 #define NO_ADDRESS      NO_DATA         /* no address, look for MX record */
 129
 130 __BEGIN_DECLS
 131 void            endhostent __P((void));
 132 void            endnetent __P((void));
 133 void            endprotoent __P((void));
 134 void            endservent __P((void));
 135 struct hostent  *gethostbyaddr __P((const char *, int, int));
 136 struct hostent  *gethostbyname __P((const char *));
 137 struct hostent  *gethostbyname2 __P((const char *, int));
 138 struct hostent  *gethostent __P((void));
 139 struct netent   *getnetbyaddr __P((unsigned long, int));
 140 struct netent   *getnetbyname __P((const char *));
 141 struct netent   *getnetent __P((void));
 142 struct protoent *getprotobyname __P((const char *));
 143 struct protoent *getprotobynumber __P((int));
 144 struct protoent *getprotoent __P((void));
 145 struct servent  *getservbyname __P((const char *, const char *));
 146 struct servent  *getservbyport __P((int, const char *));
 147 struct servent  *getservent __P((void));
 148 void            herror __P((const char *));
 149 const char      *hstrerror __P((int));
 150 void            sethostent __P((int));
 151 /* void         sethostfile __P((const char *)); */
 152 void            setnetent __P((int));
 153 void            setprotoent __P((int));
 154 void            setservent __P((int));
 155 __END_DECLS
 156
 157 /* This is nec'y to make this include file properly replace the sun version. */
 158 #ifdef __GNU_LIBRARY__
 159 #include <rpc/netdb.h>
 160 #else
 161 #ifdef sun
 162 struct rpcent {
 163         char    *r_name;        /* name of server for this rpc program */
 164         char    **r_aliases;    /* alias list */
 165         int     r_number;       /* rpc program number */
 166 };
 167 struct rpcent   *getrpcbyname(), *getrpcbynumber(), *getrpcent();
 168 #endif /* sun */
 169 #endif /* __GNU_LIBRARY__ */
 170
 171 #endif /* !_NETDB_H_ */