netdb.h revision 1.10
1/* $NetBSD: netdb.h,v 1.10 1998/02/03 04:20:36 perry Exp $ */ 2 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 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 36 * Id: netdb.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp 37 * - 38 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 39 * 40 * Permission to use, copy, modify, and distribute this software for any 41 * purpose with or without fee is hereby granted, provided that the above 42 * copyright notice and this permission notice appear in all copies, and that 43 * the name of Digital Equipment Corporation not be used in advertising or 44 * publicity pertaining to distribution of the document or software without 45 * specific, written prior permission. 46 * 47 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 48 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 50 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 51 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 52 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 53 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 54 * SOFTWARE. 55 * - 56 * --Copyright-- 57 */ 58 59#ifndef _NETDB_H_ 60#define _NETDB_H_ 61 62#include <sys/param.h> 63#include <sys/cdefs.h> 64 65#define _PATH_HEQUIV "/etc/hosts.equiv" 66#define _PATH_HOSTS "/etc/hosts" 67#define _PATH_NETWORKS "/etc/networks" 68#define _PATH_PROTOCOLS "/etc/protocols" 69#define _PATH_SERVICES "/etc/services" 70 71extern int h_errno; 72 73/* 74 * Structures returned by network data base library. All addresses are 75 * supplied in host order, and returned in network order (suitable for 76 * use in system calls). 77 */ 78struct hostent { 79 char *h_name; /* official name of host */ 80 char **h_aliases; /* alias list */ 81 int h_addrtype; /* host address type */ 82 int h_length; /* length of address */ 83 char **h_addr_list; /* list of addresses from name server */ 84#define h_addr h_addr_list[0] /* address, for backward compatiblity */ 85}; 86 87/* 88 * Assumption here is that a network number 89 * fits in an unsigned long -- probably a poor one. 90 */ 91struct netent { 92 char *n_name; /* official name of net */ 93 char **n_aliases; /* alias list */ 94 int n_addrtype; /* net address type */ 95 unsigned long n_net; /* network # */ 96}; 97 98struct servent { 99 char *s_name; /* official service name */ 100 char **s_aliases; /* alias list */ 101 int s_port; /* port # */ 102 char *s_proto; /* protocol to use */ 103}; 104 105struct protoent { 106 char *p_name; /* official protocol name */ 107 char **p_aliases; /* alias list */ 108 int p_proto; /* protocol # */ 109}; 110 111/* 112 * Error return codes from gethostbyname() and gethostbyaddr() 113 * (left in extern int h_errno). 114 */ 115 116#define NETDB_INTERNAL -1 /* see errno */ 117#define NETDB_SUCCESS 0 /* no problem */ 118#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 119#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 120#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 121#define NO_DATA 4 /* Valid name, no data record of requested type */ 122#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 123 124__BEGIN_DECLS 125void endhostent __P((void)); 126void endnetent __P((void)); 127void endprotoent __P((void)); 128void endservent __P((void)); 129struct hostent *gethostbyaddr __P((const char *, int, int)); 130struct hostent *gethostbyname __P((const char *)); 131struct hostent *gethostbyname2 __P((const char *, int)); 132struct hostent *gethostent __P((void)); 133struct netent *getnetbyaddr __P((unsigned long, int)); 134struct netent *getnetbyname __P((const char *)); 135struct netent *getnetent __P((void)); 136struct protoent *getprotobyname __P((const char *)); 137struct protoent *getprotobynumber __P((int)); 138struct protoent *getprotoent __P((void)); 139struct servent *getservbyname __P((const char *, const char *)); 140struct servent *getservbyport __P((int, const char *)); 141struct servent *getservent __P((void)); 142void herror __P((const char *)); 143const char *hstrerror __P((int)); 144void sethostent __P((int)); 145/* void sethostfile __P((const char *)); */ 146void setnetent __P((int)); 147void setprotoent __P((int)); 148void setservent __P((int)); 149__END_DECLS 150 151#endif /* !_NETDB_H_ */ 152