2 * Copyright (c) 1980, 1983, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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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
34 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
36 * Permission to use, copy, modify, and distribute this software for any
37 * purpose with or without fee is hereby granted, provided that the above
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40 * publicity pertaining to distribution of the document or software without
41 * specific, written prior permission.
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44 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
45 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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49 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
56 * @(#)netdb.h 8.1 (Berkeley) 6/2/93
57 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
58 * $FreeBSD: src/include/netdb.h,v 1.14.2.5 2001/08/29 08:46:51 alfred Exp $
59 * $DragonFly: src/include/netdb.h,v 1.2 2003/06/17 04:25:56 dillon Exp $
65 #include <machine/ansi.h>
66 #include <sys/cdefs.h>
69 typedef _BSD_SIZE_T_ size_t;
74 # define _PATH_HEQUIV "/etc/hosts.equiv"
76 #define _PATH_HOSTS "/etc/hosts"
77 #define _PATH_NETWORKS "/etc/networks"
78 #define _PATH_PROTOCOLS "/etc/protocols"
79 #define _PATH_SERVICES "/etc/services"
84 * Structures returned by network data base library. All addresses are
85 * supplied in host order, and returned in network order (suitable for
86 * use in system calls).
89 char *h_name; /* official name of host */
90 char **h_aliases; /* alias list */
91 int h_addrtype; /* host address type */
92 int h_length; /* length of address */
93 char **h_addr_list; /* list of addresses from name server */
94 #define h_addr h_addr_list[0] /* address, for backward compatibility */
98 * Assumption here is that a network number
99 * fits in an unsigned long -- probably a poor one.
102 char *n_name; /* official name of net */
103 char **n_aliases; /* alias list */
104 int n_addrtype; /* net address type */
105 unsigned long n_net; /* network # */
109 char *s_name; /* official service name */
110 char **s_aliases; /* alias list */
111 int s_port; /* port # */
112 char *s_proto; /* protocol to use */
116 char *p_name; /* official protocol name */
117 char **p_aliases; /* alias list */
118 int p_proto; /* protocol # */
122 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
123 int ai_family; /* PF_xxx */
124 int ai_socktype; /* SOCK_xxx */
125 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
126 size_t ai_addrlen; /* length of ai_addr */
127 char *ai_canonname; /* canonical name for hostname */
128 struct sockaddr *ai_addr; /* binary address */
129 struct addrinfo *ai_next; /* next structure in linked list */
133 * Error return codes from gethostbyname() and gethostbyaddr()
134 * (left in extern int h_errno).
137 #define NETDB_INTERNAL -1 /* see errno */
138 #define NETDB_SUCCESS 0 /* no problem */
139 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
140 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
141 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
142 #define NO_DATA 4 /* Valid name, no data record of requested type */
143 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
146 * Error return codes from getaddrinfo()
148 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
149 #define EAI_AGAIN 2 /* temporary failure in name resolution */
150 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
151 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
152 #define EAI_FAMILY 5 /* ai_family not supported */
153 #define EAI_MEMORY 6 /* memory allocation failure */
154 #define EAI_NODATA 7 /* no address associated with hostname */
155 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
156 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
157 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
158 #define EAI_SYSTEM 11 /* system error returned in errno */
159 #define EAI_BADHINTS 12
160 #define EAI_PROTOCOL 13
164 * Flag values for getaddrinfo()
166 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
167 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
168 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
169 /* valid flags for addrinfo */
171 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_ADDRCONFIG)
173 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
174 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
175 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
176 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
177 /* special recommended flags for getipnodebyname */
178 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
181 * Constants for getnameinfo()
183 #define NI_MAXHOST 1025
184 #define NI_MAXSERV 32
187 * Flag values for getnameinfo()
189 #define NI_NOFQDN 0x00000001
190 #define NI_NUMERICHOST 0x00000002
191 #define NI_NAMEREQD 0x00000004
192 #define NI_NUMERICSERV 0x00000008
193 #define NI_DGRAM 0x00000010
194 #define NI_WITHSCOPEID 0x00000020
197 * Scope delimit character
199 #define SCOPE_DELIMITER '%'
202 * data types - basically forward decl for getnameinfo()
204 #ifdef _BSD_SOCKLEN_T_
205 typedef _BSD_SOCKLEN_T_ socklen_t;
206 #undef _BSD_SOCKLEN_T_
210 void endhostent __P((void));
211 void endnetent __P((void));
212 void endnetgrent __P((void));
213 void endprotoent __P((void));
214 void endservent __P((void));
215 void freehostent __P((struct hostent *));
216 struct hostent *gethostbyaddr __P((const char *, int, int));
217 struct hostent *gethostbyname __P((const char *));
218 struct hostent *gethostbyname2 __P((const char *, int));
219 struct hostent *gethostent __P((void));
220 struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *));
221 struct hostent *getipnodebyname __P((const char *, int, int, int *));
222 struct netent *getnetbyaddr __P((unsigned long, int));
223 struct netent *getnetbyname __P((const char *));
224 struct netent *getnetent __P((void));
225 int getnetgrent __P((char **, char **, char **));
226 struct protoent *getprotobyname __P((const char *));
227 struct protoent *getprotobynumber __P((int));
228 struct protoent *getprotoent __P((void));
229 struct servent *getservbyname __P((const char *, const char *));
230 struct servent *getservbyport __P((int, const char *));
231 struct servent *getservent __P((void));
232 void herror __P((const char *));
233 __const char *hstrerror __P((int));
234 int innetgr __P((const char *, const char *, const char *,
236 void sethostent __P((int));
237 /* void sethostfile __P((const char *)); */
238 void setnetent __P((int));
239 void setprotoent __P((int));
240 int getaddrinfo __P((const char *, const char *,
241 const struct addrinfo *, struct addrinfo **));
242 int getnameinfo __P((const struct sockaddr *, socklen_t, char *,
243 size_t, char *, size_t, int));
244 void freeaddrinfo __P((struct addrinfo *));
245 char *gai_strerror __P((int));
246 void setnetgrent __P((const char *));
247 void setservent __P((int));
250 * PRIVATE functions specific to the FreeBSD implementation
253 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
254 void _sethosthtent __P((int));
255 void _endhosthtent __P((void));
256 void _sethostdnsent __P((int));
257 void _endhostdnsent __P((void));
258 void _setnethtent __P((int));
259 void _endnethtent __P((void));
260 void _setnetdnsent __P((int));
261 void _endnetdnsent __P((void));
262 struct hostent * _gethostbyhtname __P((const char *, int));
263 struct hostent * _gethostbydnsname __P((const char *, int));
264 struct hostent * _gethostbynisname __P((const char *, int));
265 struct hostent * _gethostbyhtaddr __P((const char *, int, int));
266 struct hostent * _gethostbydnsaddr __P((const char *, int, int));
267 struct hostent * _gethostbynisaddr __P((const char *, int, int));
268 struct netent * _getnetbyhtname __P((const char *));
269 struct netent * _getnetbydnsname __P((const char *));
270 struct netent * _getnetbynisname __P((const char *));
271 struct netent * _getnetbyhtaddr __P((unsigned long, int));
272 struct netent * _getnetbydnsaddr __P((unsigned long, int));
273 struct netent * _getnetbynisaddr __P((unsigned long, int));
274 void _map_v4v6_address __P((const char *, char *));
275 void _map_v4v6_hostent __P((struct hostent *, char **, int *));
278 #endif /* !_NETDB_H_ */