1 /* $NetBSD: netdb.h,v 1.4 1994/10/26 00:56:09 cgd Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1983, 1988 Regents of the University of California. 5 * 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 5.15 (Berkeley) 4/3/91 36 */ 37 38 #ifndef _NETDB_H_ 39 #define _NETDB_H_ 40 41 #define _PATH_HEQUIV "/etc/hosts.equiv" 42 #define _PATH_HOSTS "/etc/hosts" 43 #define _PATH_NETWORKS "/etc/networks" 44 #define _PATH_PROTOCOLS "/etc/protocols" 45 #define _PATH_SERVICES "/etc/services" 46 47 /* 48 * Structures returned by network data base library. All addresses are 49 * supplied in host order, and returned in network order (suitable for 50 * use in system calls). 51 */ 52 struct hostent { 53 char *h_name; /* official name of host */ 54 char **h_aliases; /* alias list */ 55 int h_addrtype; /* host address type */ 56 int h_length; /* length of address */ 57 char **h_addr_list; /* list of addresses from name server */ 58 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 59 }; 60 61 /* 62 * Assumption here is that a network number 63 * fits in 32 bits -- probably a poor one. 64 */ 65 struct netent { 66 char *n_name; /* official name of net */ 67 char **n_aliases; /* alias list */ 68 int n_addrtype; /* net address type */ 69 unsigned long n_net; /* network # */ 70 }; 71 72 struct servent { 73 char *s_name; /* official service name */ 74 char **s_aliases; /* alias list */ 75 int s_port; /* port # */ 76 char *s_proto; /* protocol to use */ 77 }; 78 79 struct protoent { 80 char *p_name; /* official protocol name */ 81 char **p_aliases; /* alias list */ 82 int p_proto; /* protocol # */ 83 }; 84 85 /* 86 * Error return codes from gethostbyname() and gethostbyaddr() 87 * (left in extern int h_errno). 88 */ 89 90 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 91 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 92 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 93 #define NO_DATA 4 /* Valid name, no data record of requested type */ 94 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 95 96 #include <sys/cdefs.h> 97 98 __BEGIN_DECLS 99 void endhostent __P((void)); 100 void endnetent __P((void)); 101 void endprotoent __P((void)); 102 void endservent __P((void)); 103 struct hostent *gethostbyaddr __P((const char *, int, int)); 104 struct hostent *gethostbyname __P((const char *)); 105 struct hostent *gethostent __P((void)); 106 struct netent *getnetbyaddr __P((long, int)); /* u_long? */ 107 struct netent *getnetbyname __P((const char *)); 108 struct netent *getnetent __P((void)); 109 struct protoent *getprotobyname __P((const char *)); 110 struct protoent *getprotobynumber __P((int)); 111 struct protoent *getprotoent __P((void)); 112 struct servent *getservbyname __P((const char *, const char *)); 113 struct servent *getservbyport __P((int, const char *)); 114 struct servent *getservent __P((void)); 115 void herror __P((const char *)); 116 char *hstrerror __P((int)); 117 void sethostent __P((int)); 118 /* void sethostfile __P((const char *)); */ 119 void setnetent __P((int)); 120 void setprotoent __P((int)); 121 void setservent __P((int)); 122 __END_DECLS 123 124 #endif /* !_NETDB_H_ */ 125