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netdb.h revision 1.1 
      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  *	@(#)netdb.h	5.15 (Berkeley) 4/3/91
     34  */
     35 
     36 #ifndef _NETDB_H_
     37 #define _NETDB_H_
     38 
     39 #define	_PATH_HEQUIV	"/etc/hosts.equiv"
     40 #define	_PATH_HOSTS	"/etc/hosts"
     41 #define	_PATH_NETWORKS	"/etc/networks"
     42 #define	_PATH_PROTOCOLS	"/etc/protocols"
     43 #define	_PATH_SERVICES	"/etc/services"
     44 
     45 /*
     46  * Structures returned by network data base library.  All addresses are
     47  * supplied in host order, and returned in network order (suitable for
     48  * use in system calls).
     49  */
     50 struct	hostent {
     51 	char	*h_name;	/* official name of host */
     52 	char	**h_aliases;	/* alias list */
     53 	int	h_addrtype;	/* host address type */
     54 	int	h_length;	/* length of address */
     55 	char	**h_addr_list;	/* list of addresses from name server */
     56 #define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
     57 };
     58 
     59 /*
     60  * Assumption here is that a network number
     61  * fits in 32 bits -- probably a poor one.
     62  */
     63 struct	netent {
     64 	char		*n_name;	/* official name of net */
     65 	char		**n_aliases;	/* alias list */
     66 	int		n_addrtype;	/* net address type */
     67 	unsigned long	n_net;		/* network # */
     68 };
     69 
     70 struct	servent {
     71 	char	*s_name;	/* official service name */
     72 	char	**s_aliases;	/* alias list */
     73 	int	s_port;		/* port # */
     74 	char	*s_proto;	/* protocol to use */
     75 };
     76 
     77 struct	protoent {
     78 	char	*p_name;	/* official protocol name */
     79 	char	**p_aliases;	/* alias list */
     80 	int	p_proto;	/* protocol # */
     81 };
     82 
     83 /*
     84  * Error return codes from gethostbyname() and gethostbyaddr()
     85  * (left in extern int h_errno).
     86  */
     87 
     88 #define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
     89 #define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
     90 #define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
     91 #define	NO_DATA		4 /* Valid name, no data record of requested type */
     92 #define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
     93 
     94 #include <sys/cdefs.h>
     95 
     96 __BEGIN_DECLS
     97 void		endhostent __P((void));
     98 void		endnetent __P((void));
     99 void		endprotoent __P((void));
    100 void		endservent __P((void));
    101 struct hostent	*gethostbyaddr __P((const char *, int, int));
    102 struct hostent	*gethostbyname __P((char *));
    103 struct hostent *gethostent __P((void));
    104 struct netent	*getnetbyaddr __P((long, int)); /* u_long? */
    105 struct netent	*getnetbyname __P((const char *));
    106 struct netent	*getnetent __P((void));
    107 struct protoent	*getprotobyname __P((const char *));
    108 struct protoent	*getprotobynumber __P((int));
    109 struct protoent	*getprotoent __P((void));
    110 struct servent	*getservbyname __P((const char *, const char *));
    111 struct servent	*getservbyport __P((int, const char *));
    112 struct servent	*getservent __P((void));
    113 void		herror __P((const char *));
    114 void		sethostent __P((int));
    115 /* void		sethostfile __P((const char *)); */
    116 void		setnetent __P((int));
    117 void		setprotoent __P((int));
    118 void		setservent __P((int));
    119 __END_DECLS
    120 
    121 #endif /* !_NETDB_H_ */
    122