netdb.h revision 10132
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 * $Id: netdb.h,v 1.2 1995/05/30 04:54:41 rgrimes Exp $ 35 * - 36 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 37 * 38 * Permission to use, copy, modify, and distribute this software for any 39 * purpose with or without fee is hereby granted, provided that the above 40 * copyright notice and this permission notice appear in all copies, and that 41 * the name of Digital Equipment Corporation not be used in advertising or 42 * publicity pertaining to distribution of the document or software without 43 * specific, written prior permission. 44 * 45 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 46 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 48 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 49 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 50 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 51 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 52 * SOFTWARE. 53 * - 54 * --Copyright-- 55 */ 56 57#ifndef _NETDB_H_ 58#define _NETDB_H_ 59 60#define _PATH_HEQUIV "/etc/hosts.equiv" 61#define _PATH_HOSTS "/etc/hosts" 62#define _PATH_NETWORKS "/etc/networks" 63#define _PATH_PROTOCOLS "/etc/protocols" 64#define _PATH_SERVICES "/etc/services" 65 66extern int h_errno; 67 68/* 69 * Structures returned by network data base library. All addresses are 70 * supplied in host order, and returned in network order (suitable for 71 * use in system calls). 72 */ 73struct hostent { 74 char *h_name; /* official name of host */ 75 char **h_aliases; /* alias list */ 76 int h_addrtype; /* host address type */ 77 int h_length; /* length of address */ 78 char **h_addr_list; /* list of addresses from name server */ 79#define h_addr h_addr_list[0] /* address, for backward compatiblity */ 80}; 81 82/* 83 * Assumption here is that a network number 84 * fits in an unsigned long -- probably a poor one. 85 */ 86struct netent { 87 char *n_name; /* official name of net */ 88 char **n_aliases; /* alias list */ 89 int n_addrtype; /* net address type */ 90 unsigned long n_net; /* network # */ 91}; 92 93struct servent { 94 char *s_name; /* official service name */ 95 char **s_aliases; /* alias list */ 96 int s_port; /* port # */ 97 char *s_proto; /* protocol to use */ 98}; 99 100struct protoent { 101 char *p_name; /* official protocol name */ 102 char **p_aliases; /* alias list */ 103 int p_proto; /* protocol # */ 104}; 105 106/* 107 * Error return codes from gethostbyname() and gethostbyaddr() 108 * (left in extern int h_errno). 109 */ 110 111#define NETDB_INTERNAL -1 /* see errno */ 112#define NETDB_SUCCESS 0 /* no problem */ 113#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 114#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 115#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 116#define NO_DATA 4 /* Valid name, no data record of requested type */ 117#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 118 119#include <sys/cdefs.h> 120 121__BEGIN_DECLS 122void endhostent __P((void)); 123void endnetent __P((void)); 124void endprotoent __P((void)); 125void endservent __P((void)); 126struct hostent *gethostbyaddr __P((const char *, int, int)); 127struct hostent *gethostbyname __P((const char *)); 128struct hostent *gethostent __P((void)); 129struct netent *getnetbyaddr __P((long, int)); /* u_long? */ 130struct netent *getnetbyname __P((const char *)); 131struct netent *getnetent __P((void)); 132struct protoent *getprotobyname __P((const char *)); 133struct protoent *getprotobynumber __P((int)); 134struct protoent *getprotoent __P((void)); 135struct servent *getservbyname __P((const char *, const char *)); 136struct servent *getservbyport __P((int, const char *)); 137struct servent *getservent __P((void)); 138void herror __P((const char *)); 139const char *hstrerror __P((int)); 140void sethostent __P((int)); 141/* void sethostfile __P((const char *)); */ 142void setnetent __P((int)); 143void setprotoent __P((int)); 144void setservent __P((int)); 145__END_DECLS 146 147#endif /* !_NETDB_H_ */ 148