1 /*- 2 * Copyright (c) 1980, 1983, 1988 Regents of the University of California. 3 * 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 * $Id: netdb.h,v 1.1 94/10/20 00:53:32 bill Exp $ 34 */ 35 36 #ifndef _NETDB_H_ 37 #define _NETDB_H_ 38 39 #define _PATH_HEQUIV "/etc/hosts.equiv" 40 #define _PATH_HOSTS "/etc/hosts" 41 #define _PATH_NETWORKS "/etc/networks" 42 #define _PATH_PROTOCOLS "/etc/protocols" 43 #define _PATH_SERVICES "/etc/services" 44 45 /* 46 * Structures returned by network data base library. All addresses are 47 * supplied in host order, and returned in network order (suitable for 48 * use in system calls). 49 */ 50 struct hostent { 51 char *h_name; /* official name of host */ 52 char **h_aliases; /* alias list */ 53 int h_addrtype; /* host address type */ 54 int h_length; /* length of address */ 55 char **h_addr_list; /* list of addresses from name server */ 56 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 57 }; 58 59 /* 60 * Assumption here is that a network number 61 * fits in 32 bits -- probably a poor one. 62 */ 63 struct netent { 64 char *n_name; /* official name of net */ 65 char **n_aliases; /* alias list */ 66 int n_addrtype; /* net address type */ 67 unsigned long n_net; /* network # */ 68 }; 69 70 struct servent { 71 char *s_name; /* official service name */ 72 char **s_aliases; /* alias list */ 73 int s_port; /* port # */ 74 char *s_proto; /* protocol to use */ 75 }; 76 77 struct protoent { 78 char *p_name; /* official protocol name */ 79 char **p_aliases; /* alias list */ 80 int p_proto; /* protocol # */ 81 }; 82 83 /* 84 * Error return codes from gethostbyname() and gethostbyaddr() 85 * (left in extern int h_errno). 86 */ 87 88 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 89 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 90 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 91 #define NO_DATA 4 /* Valid name, no data record of requested type */ 92 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 93 94 #include <sys/cdefs.h> 95 96 __BEGIN_DECLS 97 void endhostent __P((void)); 98 void endnetent __P((void)); 99 void endprotoent __P((void)); 100 void endservent __P((void)); 101 struct hostent *gethostbyaddr __P((const char *, int, int)); 102 struct hostent *gethostbyname __P((char *)); 103 struct hostent *gethostent __P((void)); 104 struct netent *getnetbyaddr __P((long, int)); /* u_long? */ 105 struct netent *getnetbyname __P((const char *)); 106 struct netent *getnetent __P((void)); 107 struct protoent *getprotobyname __P((const char *)); 108 struct protoent *getprotobynumber __P((int)); 109 struct protoent *getprotoent __P((void)); 110 struct servent *getservbyname __P((const char *, const char *)); 111 struct servent *getservbyport __P((int, const char *)); 112 struct servent *getservent __P((void)); 113 void herror __P((const char *)); 114 void sethostent __P((int)); 115 /* void sethostfile __P((const char *)); */ 116 void setnetent __P((int)); 117 void setprotoent __P((int)); 118 void setservent __P((int)); 119 __END_DECLS 120 121 #endif /* !_NETDB_H_ */ 122