1 /*- 2 * Copyright (c) 1980, 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)netdb.h 8.1 (Berkeley) 06/02/93 8 * $Id: netdb.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp $ 9 * - 10 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 11 * 12 * Permission to use, copy, modify, and distribute this software for any 13 * purpose with or without fee is hereby granted, provided that the above 14 * copyright notice and this permission notice appear in all copies, and that 15 * the name of Digital Equipment Corporation not be used in advertising or 16 * publicity pertaining to distribution of the document or software without 17 * specific, written prior permission. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 20 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 22 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 23 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 24 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 25 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 26 * SOFTWARE. 27 * - 28 * --Copyright-- 29 */ 30 31 #ifndef _NETDB_H_ 32 #define _NETDB_H_ 33 34 #define _PATH_HEQUIV "/etc/hosts.equiv" 35 #define _PATH_HOSTS "/etc/hosts" 36 #define _PATH_NETWORKS "/etc/networks" 37 #define _PATH_PROTOCOLS "/etc/protocols" 38 #define _PATH_SERVICES "/etc/services" 39 40 /* 41 * Structures returned by network data base library. All addresses are 42 * supplied in host order, and returned in network order (suitable for 43 * use in system calls). 44 */ 45 struct hostent { 46 char *h_name; /* official name of host */ 47 char **h_aliases; /* alias list */ 48 int h_addrtype; /* host address type */ 49 int h_length; /* length of address */ 50 char **h_addr_list; /* list of addresses from name server */ 51 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 52 }; 53 54 /* 55 * Assumption here is that a network number 56 * fits in an unsigned long -- probably a poor one. 57 */ 58 struct netent { 59 char *n_name; /* official name of net */ 60 char **n_aliases; /* alias list */ 61 int n_addrtype; /* net address type */ 62 unsigned long n_net; /* network # */ 63 }; 64 65 struct servent { 66 char *s_name; /* official service name */ 67 char **s_aliases; /* alias list */ 68 int s_port; /* port # */ 69 char *s_proto; /* protocol to use */ 70 }; 71 72 struct protoent { 73 char *p_name; /* official protocol name */ 74 char **p_aliases; /* alias list */ 75 int p_proto; /* protocol # */ 76 }; 77 78 /* 79 * Error return codes from gethostbyname() and gethostbyaddr() 80 * (left in extern int h_errno). 81 */ 82 83 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 84 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 85 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 86 #define NO_DATA 4 /* Valid name, no data record of requested type */ 87 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 88 89 #include <sys/cdefs.h> 90 91 __BEGIN_DECLS 92 void endhostent __P((void)); 93 void endnetent __P((void)); 94 void endprotoent __P((void)); 95 void endservent __P((void)); 96 struct hostent *gethostbyaddr __P((const char *, int, int)); 97 struct hostent *gethostbyname __P((const char *)); 98 struct hostent *gethostent __P((void)); 99 struct netent *getnetbyaddr __P((long, int)); /* u_long? */ 100 struct netent *getnetbyname __P((const char *)); 101 struct netent *getnetent __P((void)); 102 struct protoent *getprotobyname __P((const char *)); 103 struct protoent *getprotobynumber __P((int)); 104 struct protoent *getprotoent __P((void)); 105 struct servent *getservbyname __P((const char *, const char *)); 106 struct servent *getservbyport __P((int, const char *)); 107 struct servent *getservent __P((void)); 108 void herror __P((const char *)); 109 char *hstrerror __P((int)); 110 void sethostent __P((int)); 111 /* void sethostfile __P((const char *)); */ 112 void setnetent __P((int)); 113 void setprotoent __P((int)); 114 void setservent __P((int)); 115 __END_DECLS 116 117 #endif /* !_NETDB_H_ */ 118