inet/netdb.h

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