netdb.h

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/*-
 * Copyright (c) 1980, 1983, 1988 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.
 *
 *      @(#)netdb.h     5.15 (Berkeley) 4/3/91
 */

#ifndef _NETDB_H_
#define _NETDB_H_

#define _PATH_HEQUIV    "/etc/hosts.equiv"
#define _PATH_HOSTS     "/etc/hosts"
#define _PATH_NETWORKS  "/etc/networks"
#define _PATH_PROTOCOLS "/etc/protocols"
#define _PATH_SERVICES  "/etc/services"
#define _PATH_SERVACCES "/etc/serv.access"

/*
 * 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 compatiblity */
};

/*
 * Assumption here is that a network number
 * fits in 32 bits -- 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).
 */
extern int h_errno;

#define HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */
#define TRY_AGAIN       2 /* Non-Authoritive 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 */

#ifndef _ANSI_H
#include <ansi.h>
#endif

void            endhostent _ARGS((void));
void            endnetent _ARGS((void));
void            endprotoent _ARGS((void));
void            endservent _ARGS((void));
struct hostent  *gethostbyaddr _ARGS((const char *, int, int));
struct hostent  *gethostbyname _ARGS((const char *));
struct hostent  *gethostent _ARGS((void));
struct netent   *getnetbyaddr _ARGS((long, int)); /* u_long? */
struct netent   *getnetbyname _ARGS((const char *));
struct netent   *getnetent _ARGS((void));
struct protoent *getprotobyname _ARGS((const char *));
struct protoent *getprotobynumber _ARGS((int));
struct protoent *getprotoent _ARGS((void));
struct servent  *getservbyname _ARGS((const char *, const char *));
struct servent  *getservbyport _ARGS((int, const char *));
struct servent  *getservent _ARGS((void));
void            herror _ARGS((const char *));
void            sethostent _ARGS((int));
/* void         sethostfile _ARGS((const char *)); */
void            setnetent _ARGS((int));
void            setprotoent _ARGS((int));
void            setservent _ARGS((int));
#ifdef _MINIX
int             servxcheck _ARGS((unsigned long _peer, const char *_service,
                        void (*_logf) _ARGS((int _pass, const char *_name))));
char            *servxfile _ARGS((const char *_file));
#endif

#endif /* !_NETDB_H_ */

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