netdb.h revision 36888
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 * - 34 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 35 * 36 * Permission to use, copy, modify, and distribute this software for any 37 * purpose with or without fee is hereby granted, provided that the above 38 * copyright notice and this permission notice appear in all copies, and that 39 * the name of Digital Equipment Corporation not be used in advertising or 40 * publicity pertaining to distribution of the document or software without 41 * specific, written prior permission. 42 * 43 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 44 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 45 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 46 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 47 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 48 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 49 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 50 * SOFTWARE. 51 * - 52 * --Copyright-- 53 */ 54 55/* 56 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 57 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $ 58 * $Id: netdb.h,v 1.10 1997/08/16 23:32:42 steve Exp $ 59 */ 60 61#ifndef _NETDB_H_ 62#define _NETDB_H_ 63 64#include <sys/cdefs.h> 65 66#ifndef _PATH_HEQUIV 67# define _PATH_HEQUIV "/etc/hosts.equiv" 68#endif 69#define _PATH_HOSTS "/etc/hosts" 70#define _PATH_NETWORKS "/etc/networks" 71#define _PATH_PROTOCOLS "/etc/protocols" 72#define _PATH_SERVICES "/etc/services" 73 74extern int h_errno; 75 76/* 77 * Structures returned by network data base library. All addresses are 78 * supplied in host order, and returned in network order (suitable for 79 * use in system calls). 80 */ 81struct hostent { 82 char *h_name; /* official name of host */ 83 char **h_aliases; /* alias list */ 84 int h_addrtype; /* host address type */ 85 int h_length; /* length of address */ 86 char **h_addr_list; /* list of addresses from name server */ 87#define h_addr h_addr_list[0] /* address, for backward compatibility */ 88}; 89 90/* 91 * Assumption here is that a network number 92 * fits in an unsigned long -- probably a poor one. 93 */ 94struct netent { 95 char *n_name; /* official name of net */ 96 char **n_aliases; /* alias list */ 97 int n_addrtype; /* net address type */ 98 unsigned long n_net; /* network # */ 99}; 100 101struct servent { 102 char *s_name; /* official service name */ 103 char **s_aliases; /* alias list */ 104 int s_port; /* port # */ 105 char *s_proto; /* protocol to use */ 106}; 107 108struct protoent { 109 char *p_name; /* official protocol name */ 110 char **p_aliases; /* alias list */ 111 int p_proto; /* protocol # */ 112}; 113 114/* 115 * Error return codes from gethostbyname() and gethostbyaddr() 116 * (left in extern int h_errno). 117 */ 118 119#define NETDB_INTERNAL -1 /* see errno */ 120#define NETDB_SUCCESS 0 /* no problem */ 121#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 122#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 123#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 124#define NO_DATA 4 /* Valid name, no data record of requested type */ 125#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 126 127__BEGIN_DECLS 128void endhostent __P((void)); 129void endnetent __P((void)); 130void endprotoent __P((void)); 131void endservent __P((void)); 132struct hostent *gethostbyaddr __P((const char *, int, int)); 133struct hostent *gethostbyname __P((const char *)); 134struct hostent *gethostbyname2 __P((const char *, int)); 135struct hostent *gethostent __P((void)); 136struct netent *getnetbyaddr __P((unsigned long, int)); 137struct netent *getnetbyname __P((const char *)); 138struct netent *getnetent __P((void)); 139struct protoent *getprotobyname __P((const char *)); 140struct protoent *getprotobynumber __P((int)); 141struct protoent *getprotoent __P((void)); 142struct servent *getservbyname __P((const char *, const char *)); 143struct servent *getservbyport __P((int, const char *)); 144struct servent *getservent __P((void)); 145void herror __P((const char *)); 146__const char *hstrerror __P((int)); 147void sethostent __P((int)); 148/* void sethostfile __P((const char *)); */ 149void setnetent __P((int)); 150void setprotoent __P((int)); 151void setservent __P((int)); 152 153/* 154 * PRIVATE functions specific to the FreeBSD implementation 155 */ 156 157/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 158void _sethosthtent __P((int)); 159void _endhosthtent __P((void)); 160void _sethostdnsent __P((int)); 161void _endhostdnsent __P((void)); 162void _setnethtent __P((int)); 163void _endnethtent __P((void)); 164void _setnetdnsent __P((int)); 165void _endnetdnsent __P((void)); 166struct hostent * _gethostbyhtname __P((const char *, int)); 167struct hostent * _gethostbydnsname __P((const char *, int)); 168struct hostent * _gethostbynisname __P((const char *, int)); 169struct hostent * _gethostbyhtaddr __P((const char *, int, int)); 170struct hostent * _gethostbydnsaddr __P((const char *, int, int)); 171struct hostent * _gethostbynisaddr __P((const char *, int, int)); 172struct netent * _getnetbyhtname __P((const char *)); 173struct netent * _getnetbydnsname __P((const char *)); 174struct netent * _getnetbynisname __P((const char *)); 175struct netent * _getnetbyhtaddr __P((unsigned long, int)); 176struct netent * _getnetbydnsaddr __P((unsigned long, int)); 177struct netent * _getnetbynisaddr __P((unsigned long, int)); 178void _map_v4v6_address __P((const char *src, char *dst)); 179void _map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len)); 180__END_DECLS 181 182#endif /* !_NETDB_H_ */ 183