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netdb.h revision 1.3 
      1 /*-
      2  * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
      3  * 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  *	from: @(#)netdb.h	5.15 (Berkeley) 4/3/91
     34  *	$Id: netdb.h,v 1.3 1994/04/07 06:58:29 deraadt Exp $
     35  */
     36 
     37 #ifndef _NETDB_H_
     38 #define _NETDB_H_
     39 
     40 #define	_PATH_HEQUIV	"/etc/hosts.equiv"
     41 #define	_PATH_HOSTS	"/etc/hosts"
     42 #define	_PATH_NETWORKS	"/etc/networks"
     43 #define	_PATH_PROTOCOLS	"/etc/protocols"
     44 #define	_PATH_SERVICES	"/etc/services"
     45 
     46 /*
     47  * Structures returned by network data base library.  All addresses are
     48  * supplied in host order, and returned in network order (suitable for
     49  * use in system calls).
     50  */
     51 struct	hostent {
     52 	char	*h_name;	/* official name of host */
     53 	char	**h_aliases;	/* alias list */
     54 	int	h_addrtype;	/* host address type */
     55 	int	h_length;	/* length of address */
     56 	char	**h_addr_list;	/* list of addresses from name server */
     57 #define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
     58 };
     59 
     60 /*
     61  * Assumption here is that a network number
     62  * fits in 32 bits -- probably a poor one.
     63  */
     64 struct	netent {
     65 	char		*n_name;	/* official name of net */
     66 	char		**n_aliases;	/* alias list */
     67 	int		n_addrtype;	/* net address type */
     68 	unsigned long	n_net;		/* network # */
     69 };
     70 
     71 struct	servent {
     72 	char	*s_name;	/* official service name */
     73 	char	**s_aliases;	/* alias list */
     74 	int	s_port;		/* port # */
     75 	char	*s_proto;	/* protocol to use */
     76 };
     77 
     78 struct	protoent {
     79 	char	*p_name;	/* official protocol name */
     80 	char	**p_aliases;	/* alias list */
     81 	int	p_proto;	/* protocol # */
     82 };
     83 
     84 /*
     85  * Error return codes from gethostbyname() and gethostbyaddr()
     86  * (left in extern int h_errno).
     87  */
     88 
     89 #define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
     90 #define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
     91 #define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
     92 #define	NO_DATA		4 /* Valid name, no data record of requested type */
     93 #define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
     94 
     95 #include <sys/cdefs.h>
     96 
     97 __BEGIN_DECLS
     98 void		endhostent __P((void));
     99 void		endnetent __P((void));
    100 void		endprotoent __P((void));
    101 void		endservent __P((void));
    102 struct hostent	*gethostbyaddr __P((const char *, int, int));
    103 struct hostent	*gethostbyname __P((const char *));
    104 struct hostent	*gethostent __P((void));
    105 struct netent	*getnetbyaddr __P((long, int)); /* u_long? */
    106 struct netent	*getnetbyname __P((const char *));
    107 struct netent	*getnetent __P((void));
    108 struct protoent	*getprotobyname __P((const char *));
    109 struct protoent	*getprotobynumber __P((int));
    110 struct protoent	*getprotoent __P((void));
    111 struct servent	*getservbyname __P((const char *, const char *));
    112 struct servent	*getservbyport __P((int, const char *));
    113 struct servent	*getservent __P((void));
    114 void		herror __P((const char *));
    115 char		*hstrerror __P((int));
    116 void		sethostent __P((int));
    117 /* void		sethostfile __P((const char *)); */
    118 void		setnetent __P((int));
    119 void		setprotoent __P((int));
    120 void		setservent __P((int));
    121 __END_DECLS
    122 
    123 #endif /* !_NETDB_H_ */
    124