netdb.h revision 1.8
1/* 2 * ++Copyright++ 1980, 1983, 1988, 1993 3 * - 4 * Copyright (c) 1980, 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * - 35 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 36 * 37 * Permission to use, copy, modify, and distribute this software for any 38 * purpose with or without fee is hereby granted, provided that the above 39 * copyright notice and this permission notice appear in all copies, and that 40 * the name of Digital Equipment Corporation not be used in advertising or 41 * publicity pertaining to distribution of the document or software without 42 * specific, written prior permission. 43 * 44 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 45 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 46 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 47 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 48 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 49 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 50 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 51 * SOFTWARE. 52 * - 53 * --Copyright-- 54 */ 55 56/* 57 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 58 * $NetBSD: netdb.h,v 1.8 1997/10/13 09:26:06 lukem Exp $ 59 */ 60 61#ifndef _NETDB_H_ 62#define _NETDB_H_ 63 64#include <sys/param.h> 65#if (!defined(BSD)) || (BSD < 199306) 66# include <sys/bitypes.h> 67#endif 68#include <sys/cdefs.h> 69 70#define _PATH_HEQUIV "/etc/hosts.equiv" 71#define _PATH_HOSTS "/etc/hosts" 72#define _PATH_NETWORKS "/etc/networks" 73#define _PATH_PROTOCOLS "/etc/protocols" 74#define _PATH_SERVICES "/etc/services" 75 76extern int h_errno; 77 78/* 79 * Structures returned by network data base library. All addresses are 80 * supplied in host order, and returned in network order (suitable for 81 * use in system calls). 82 */ 83struct hostent { 84 char *h_name; /* official name of host */ 85 char **h_aliases; /* alias list */ 86 int h_addrtype; /* host address type */ 87 int h_length; /* length of address */ 88 char **h_addr_list; /* list of addresses from name server */ 89#define h_addr h_addr_list[0] /* address, for backward compatiblity */ 90}; 91 92/* 93 * Assumption here is that a network number 94 * fits in an unsigned long -- probably a poor one. 95 */ 96struct netent { 97 char *n_name; /* official name of net */ 98 char **n_aliases; /* alias list */ 99 int n_addrtype; /* net address type */ 100 unsigned long n_net; /* network # */ 101}; 102 103struct servent { 104 char *s_name; /* official service name */ 105 char **s_aliases; /* alias list */ 106 int s_port; /* port # */ 107 char *s_proto; /* protocol to use */ 108}; 109 110struct protoent { 111 char *p_name; /* official protocol name */ 112 char **p_aliases; /* alias list */ 113 int p_proto; /* protocol # */ 114}; 115 116/* 117 * Error return codes from gethostbyname() and gethostbyaddr() 118 * (left in extern int h_errno). 119 */ 120 121#define NETDB_INTERNAL -1 /* see errno */ 122#define NETDB_SUCCESS 0 /* no problem */ 123#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 124#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 125#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 126#define NO_DATA 4 /* Valid name, no data record of requested type */ 127#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 128 129__BEGIN_DECLS 130void endhostent __P((void)); 131void endnetent __P((void)); 132void endprotoent __P((void)); 133void endservent __P((void)); 134struct hostent *gethostbyaddr __P((const char *, int, int)); 135struct hostent *gethostbyname __P((const char *)); 136struct hostent *gethostbyname2 __P((const char *, int)); 137struct hostent *gethostent __P((void)); 138struct netent *getnetbyaddr __P((unsigned long, int)); 139struct netent *getnetbyname __P((const char *)); 140struct netent *getnetent __P((void)); 141struct protoent *getprotobyname __P((const char *)); 142struct protoent *getprotobynumber __P((int)); 143struct protoent *getprotoent __P((void)); 144struct servent *getservbyname __P((const char *, const char *)); 145struct servent *getservbyport __P((int, const char *)); 146struct servent *getservent __P((void)); 147void herror __P((const char *)); 148const char *hstrerror __P((int)); 149void sethostent __P((int)); 150/* void sethostfile __P((const char *)); */ 151void setnetent __P((int)); 152void setprotoent __P((int)); 153void setservent __P((int)); 154__END_DECLS 155 156/* This is nec'y to make this include file properly replace the sun version. */ 157#ifdef sun 158#ifdef __GNU_LIBRARY__ 159#include <rpc/netdb.h> 160#else 161struct rpcent { 162 char *r_name; /* name of server for this rpc program */ 163 char **r_aliases; /* alias list */ 164 int r_number; /* rpc program number */ 165}; 166struct rpcent *getrpcbyname(), *getrpcbynumber(), *getrpcent(); 167#endif /* __GNU_LIBRARY__ */ 168#endif /* sun */ 169 170#endif /* !_NETDB_H_ */ 171