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/*-

 * Copyright (c) 1980, 1983, 1988, 1993

 *      The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * -

 * Portions Copyright (c) 1993 by Digital Equipment Corporation.

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies, and that

 * the name of Digital Equipment Corporation not be used in advertising or

 * publicity pertaining to distribution of the document or software without

 * specific, written prior permission.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL

 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT

 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL

 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR

 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS

 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS

 * SOFTWARE.

 * -

 * --Copyright--

 */

/*

 *      @(#)netdb.h     8.1 (Berkeley) 6/2/93

 *      From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $

 *      $Id: netdb.h,v 1.2 2001-09-27 12:01:48 chris Exp $

 */

#ifndef _NETDB_H_

#define _NETDB_H_

#include <sys/cdefs.h>

#ifndef _PATH_HEQUIV

# define        _PATH_HEQUIV    "/etc/hosts.equiv"

#endif

#define _PATH_HOSTS     "/etc/hosts"

#define _PATH_NETWORKS  "/etc/networks"

#define _PATH_PROTOCOLS "/etc/protocols"

#define _PATH_SERVICES  "/etc/services"

extern int h_errno;

/*

 * Structures returned by network data base library.  All addresses are

 * supplied in host order, and returned in network order (suitable for

 * use in system calls).

 */

struct  hostent {

        char    *h_name;        /* official name of host */

        char    **h_aliases;    /* alias list */

        int     h_addrtype;     /* host address type */

        int     h_length;       /* length of address */

        char    **h_addr_list;  /* list of addresses from name server */

#define h_addr  h_addr_list[0]  /* address, for backward compatibility */

};

/*

 * Assumption here is that a network number

 * fits in an unsigned long -- probably a poor one.

 */

struct  netent {

        char            *n_name;        /* official name of net */

        char            **n_aliases;    /* alias list */

        int             n_addrtype;     /* net address type */

        unsigned long   n_net;          /* network # */

};

struct  servent {

        char    *s_name;        /* official service name */

        char    **s_aliases;    /* alias list */

        int     s_port;         /* port # */

        char    *s_proto;       /* protocol to use */

};

struct  protoent {

        char    *p_name;        /* official protocol name */

        char    **p_aliases;    /* alias list */

        int     p_proto;        /* protocol # */

};

/*

 * Error return codes from gethostbyname() and gethostbyaddr()

 * (left in extern int h_errno).

 */

#define NETDB_INTERNAL  -1      /* see errno */

#define NETDB_SUCCESS   0        /* no problem */

#define HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */

#define TRY_AGAIN       2 /* Non-Authoritative Host not found, or SERVERFAIL */

#define NO_RECOVERY     3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */

#define NO_DATA         4 /* Valid name, no data record of requested type */

#define NO_ADDRESS      NO_DATA         /* no address, look for MX record */

__BEGIN_DECLS

void            endhostent __P((void));

void            endnetent __P((void));

void            endprotoent __P((void));

void            endservent __P((void));

struct hostent  *gethostbyaddr __P((const char *, int, int));

struct hostent  *gethostbyname __P((const char *));

struct hostent  *gethostbyname2 __P((const char *, int));

struct hostent  *gethostent __P((void));

struct netent   *getnetbyaddr __P((unsigned long, int));

struct netent   *getnetbyname __P((const char *));

struct netent   *getnetent __P((void));

struct protoent *getprotobyname __P((const char *));

struct protoent *getprotobynumber __P((int));

struct protoent *getprotoent __P((void));

struct servent  *getservbyname __P((const char *, const char *));

struct servent  *getservbyport __P((int, const char *));

struct servent  *getservent __P((void));

void            herror __P((const char *));

__const char    *hstrerror __P((int));

void            sethostent __P((int));

/* void         sethostfile __P((const char *)); */

void            setnetent __P((int));

void            setprotoent __P((int));

void            setservent __P((int));

/*

 * PRIVATE functions specific to the FreeBSD implementation

 */

/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */

void    _sethosthtent __P((int));

void    _endhosthtent __P((void));

void    _sethostdnsent __P((int));

void    _endhostdnsent __P((void));

void    _setnethtent __P((int));

void    _endnethtent __P((void));

void    _setnetdnsent __P((int));

void    _endnetdnsent __P((void));

struct hostent * _gethostbyhtname  __P((const char *, int));

struct hostent * _gethostbydnsname __P((const char *, int));

struct hostent * _gethostbynisname __P((const char *, int));

struct hostent * _gethostbyhtaddr  __P((const char *, int, int));

struct hostent * _gethostbydnsaddr __P((const char *, int, int));

struct hostent * _gethostbynisaddr __P((const char *, int, int));

struct netent *  _getnetbyhtname  __P((const char *));

struct netent *  _getnetbydnsname __P((const char *));

struct netent *  _getnetbynisname __P((const char *));

struct netent *  _getnetbyhtaddr  __P((unsigned long, int));

struct netent *  _getnetbydnsaddr __P((unsigned long, int));

struct netent *  _getnetbynisaddr __P((unsigned long, int));

void _map_v4v6_address __P((const char *src, char *dst));

void _map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len));

__END_DECLS

#endif /* !_NETDB_H_ */