netdb.h revision 28271
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 * From: Id: netdb.h,v 8.8 1997/06/01 20:34:32 vixie Exp 35 * $Id: netdb.h,v 1.9 1997/06/27 08:32:37 peter Exp $ 36 * - 37 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 38 * 39 * Permission to use, copy, modify, and distribute this software for any 40 * purpose with or without fee is hereby granted, provided that the above 41 * copyright notice and this permission notice appear in all copies, and that 42 * the name of Digital Equipment Corporation not be used in advertising or 43 * publicity pertaining to distribution of the document or software without 44 * specific, written prior permission. 45 * 46 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 47 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 49 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 50 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 51 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 52 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 53 * SOFTWARE. 54 * - 55 * --Copyright-- 56 */ 57 58#ifndef _NETDB_H_ 59#define _NETDB_H_ 60 61#include <sys/cdefs.h> 62 63#define _PATH_HEQUIV "/etc/hosts.equiv" 64#define _PATH_HOSTS "/etc/hosts" 65#define _PATH_NETWORKS "/etc/networks" 66#define _PATH_PROTOCOLS "/etc/protocols" 67#define _PATH_SERVICES "/etc/services" 68 69extern int h_errno; 70 71/* 72 * Structures returned by network data base library. All addresses are 73 * supplied in host order, and returned in network order (suitable for 74 * use in system calls). 75 */ 76struct hostent { 77 char *h_name; /* official name of host */ 78 char **h_aliases; /* alias list */ 79 int h_addrtype; /* host address type */ 80 int h_length; /* length of address */ 81 char **h_addr_list; /* list of addresses from name server */ 82#define h_addr h_addr_list[0] /* address, for backward compatibility */ 83}; 84 85/* 86 * Assumption here is that a network number 87 * fits in an unsigned long -- probably a poor one. 88 */ 89struct netent { 90 char *n_name; /* official name of net */ 91 char **n_aliases; /* alias list */ 92 int n_addrtype; /* net address type */ 93 unsigned long n_net; /* network # */ 94}; 95 96struct servent { 97 char *s_name; /* official service name */ 98 char **s_aliases; /* alias list */ 99 int s_port; /* port # */ 100 char *s_proto; /* protocol to use */ 101}; 102 103struct protoent { 104 char *p_name; /* official protocol name */ 105 char **p_aliases; /* alias list */ 106 int p_proto; /* protocol # */ 107}; 108 109/* 110 * Error return codes from gethostbyname() and gethostbyaddr() 111 * (left in extern int h_errno). 112 */ 113 114#define NETDB_INTERNAL -1 /* see errno */ 115#define NETDB_SUCCESS 0 /* no problem */ 116#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 117#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 118#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 119#define NO_DATA 4 /* Valid name, no data record of requested type */ 120#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 121 122__BEGIN_DECLS 123void endhostent __P((void)); 124void endnetent __P((void)); 125void endprotoent __P((void)); 126void endservent __P((void)); 127struct hostent *gethostbyaddr __P((const char *, int, int)); 128struct hostent *gethostbyname __P((const char *)); 129struct hostent *gethostbyname2 __P((const char *, int)); 130struct hostent *gethostent __P((void)); 131struct netent *getnetbyaddr __P((unsigned long, int)); 132struct netent *getnetbyname __P((const char *)); 133struct netent *getnetent __P((void)); 134struct protoent *getprotobyname __P((const char *)); 135struct protoent *getprotobynumber __P((int)); 136struct protoent *getprotoent __P((void)); 137struct servent *getservbyname __P((const char *, const char *)); 138struct servent *getservbyport __P((int, const char *)); 139struct servent *getservent __P((void)); 140void herror __P((const char *)); 141__const char *hstrerror __P((int)); 142void sethostent __P((int)); 143/* void sethostfile __P((const char *)); */ 144void setnetent __P((int)); 145void setprotoent __P((int)); 146void setservent __P((int)); 147 148/* 149 * PRIVATE functions specific to the FreeBSD implementation 150 */ 151 152/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 153void _sethosthtent __P((int)); 154void _endhosthtent __P((void)); 155void _sethostdnsent __P((int)); 156void _endhostdnsent __P((void)); 157void _setnethtent __P((int)); 158void _endnethtent __P((void)); 159void _setnetdnsent __P((int)); 160void _endnetdnsent __P((void)); 161struct hostent * _gethostbyhtname __P((const char *, int)); 162struct hostent * _gethostbydnsname __P((const char *, int)); 163struct hostent * _gethostbynisname __P((const char *, int)); 164struct hostent * _gethostbyhtaddr __P((const char *, int, int)); 165struct hostent * _gethostbydnsaddr __P((const char *, int, int)); 166struct hostent * _gethostbynisaddr __P((const char *, int, int)); 167struct netent * _getnetbyhtname __P((const char *)); 168struct netent * _getnetbydnsname __P((const char *)); 169struct netent * _getnetbynisname __P((const char *)); 170struct netent * _getnetbyhtaddr __P((unsigned long, int)); 171struct netent * _getnetbydnsaddr __P((unsigned long, int)); 172struct netent * _getnetbynisaddr __P((unsigned long, int)); 173void _map_v4v6_address __P((const char *src, char *dst)); 174void _map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len)); 175__END_DECLS 176 177#endif /* !_NETDB_H_ */ 178