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 71 extern 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 */ 78 struct 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 */ 91 struct 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 98 struct 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 }; 104 105 struct 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 125 void endhostent __P((void)); 126 void endnetent __P((void)); 127 void endprotoent __P((void)); 128 void endservent __P((void)); 129 struct hostent *gethostbyaddr __P((const char *, int, int)); 130 struct hostent *gethostbyname __P((const char *)); 131 struct hostent *gethostbyname2 __P((const char *, int)); 132 struct hostent *gethostent __P((void)); 133 struct netent *getnetbyaddr __P((unsigned long, int)); 134 struct netent *getnetbyname __P((const char *)); 135 struct netent *getnetent __P((void)); 136 struct protoent *getprotobyname __P((const char *)); 137 struct protoent *getprotobynumber __P((int)); 138 struct protoent *getprotoent __P((void)); 139 struct servent *getservbyname __P((const char *, const char *)); 140 struct servent *getservbyport __P((int, const char *)); 141 struct servent *getservent __P((void)); 142 void herror __P((const char *)); 143 const char *hstrerror __P((int)); 144 void sethostent __P((int)); 145 /* void sethostfile __P((const char *)); */ 146 void setnetent __P((int)); 147 void setprotoent __P((int)); 148 void setservent __P((int)); 149 __END_DECLS 150 151 #endif /* !_NETDB_H_ */ 152
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