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.
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.
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
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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
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
38 * copyright notice and this permission notice appear in all copies, and that
39 * the name of Digital Equipment Corporation not be used in advertising or
40 * publicity pertaining to distribution of the document or software without
41 * specific, written prior permission.
43 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
44 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
45 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
46 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
47 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
48 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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 $
64 #include <machine/ansi.h>
65 #include <sys/cdefs.h>
68 typedef _BSD_SIZE_T_ size_t;
73 # define _PATH_HEQUIV "/etc/hosts.equiv"
75 #define _PATH_HOSTS "/etc/hosts"
76 #define _PATH_NETWORKS "/etc/networks"
77 #define _PATH_PROTOCOLS "/etc/protocols"
78 #define _PATH_SERVICES "/etc/services"
83 * Structures returned by network data base library. All addresses are
84 * supplied in host order, and returned in network order (suitable for
85 * use in system calls).
88 char *h_name; /* official name of host */
89 char **h_aliases; /* alias list */
90 int h_addrtype; /* host address type */
91 int h_length; /* length of address */
92 char **h_addr_list; /* list of addresses from name server */
93 #define h_addr h_addr_list[0] /* address, for backward compatibility */
97 * Assumption here is that a network number
98 * fits in an unsigned long -- probably a poor one.
101 char *n_name; /* official name of net */
102 char **n_aliases; /* alias list */
103 int n_addrtype; /* net address type */
104 unsigned long n_net; /* network # */
108 char *s_name; /* official service name */
109 char **s_aliases; /* alias list */
110 int s_port; /* port # */
111 char *s_proto; /* protocol to use */
115 char *p_name; /* official protocol name */
116 char **p_aliases; /* alias list */
117 int p_proto; /* protocol # */
121 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
122 int ai_family; /* PF_xxx */
123 int ai_socktype; /* SOCK_xxx */
124 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
125 size_t ai_addrlen; /* length of ai_addr */
126 char *ai_canonname; /* canonical name for hostname */
127 struct sockaddr *ai_addr; /* binary address */
128 struct addrinfo *ai_next; /* next structure in linked list */
132 * Error return codes from gethostbyname() and gethostbyaddr()
133 * (left in extern int h_errno).
136 #define NETDB_INTERNAL -1 /* see errno */
137 #define NETDB_SUCCESS 0 /* no problem */
138 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
139 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
140 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
141 #define NO_DATA 4 /* Valid name, no data record of requested type */
142 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
145 * Error return codes from getaddrinfo()
147 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
148 #define EAI_AGAIN 2 /* temporary failure in name resolution */
149 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
150 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
151 #define EAI_FAMILY 5 /* ai_family not supported */
152 #define EAI_MEMORY 6 /* memory allocation failure */
153 #define EAI_NODATA 7 /* no address associated with hostname */
154 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
155 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
156 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
157 #define EAI_SYSTEM 11 /* system error returned in errno */
158 #define EAI_BADHINTS 12
159 #define EAI_PROTOCOL 13
163 * Flag values for getaddrinfo()
165 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
166 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
167 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
168 /* valid flags for addrinfo */
170 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_ADDRCONFIG)
172 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
173 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
174 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
175 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
176 /* special recommended flags for getipnodebyname */
177 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
180 * Constants for getnameinfo()
182 #define NI_MAXHOST 1025
183 #define NI_MAXSERV 32
186 * Flag values for getnameinfo()
188 #define NI_NOFQDN 0x00000001
189 #define NI_NUMERICHOST 0x00000002
190 #define NI_NAMEREQD 0x00000004
191 #define NI_NUMERICSERV 0x00000008
192 #define NI_DGRAM 0x00000010
193 #define NI_WITHSCOPEID 0x00000020
196 * Scope delimit character
198 #define SCOPE_DELIMITER '%'
201 * data types - basically forward decl for getnameinfo()
203 #ifdef _BSD_SOCKLEN_T_
204 typedef _BSD_SOCKLEN_T_ socklen_t;
205 #undef _BSD_SOCKLEN_T_
209 void endhostent __P((void));
210 void endnetent __P((void));
211 void endnetgrent __P((void));
212 void endprotoent __P((void));
213 void endservent __P((void));
214 void freehostent __P((struct hostent *));
215 struct hostent *gethostbyaddr __P((const char *, int, int));
216 struct hostent *gethostbyname __P((const char *));
217 struct hostent *gethostbyname2 __P((const char *, int));
218 struct hostent *gethostent __P((void));
219 struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *));
220 struct hostent *getipnodebyname __P((const char *, int, int, int *));
221 struct netent *getnetbyaddr __P((unsigned long, int));
222 struct netent *getnetbyname __P((const char *));
223 struct netent *getnetent __P((void));
224 int getnetgrent __P((char **, char **, char **));
225 struct protoent *getprotobyname __P((const char *));
226 struct protoent *getprotobynumber __P((int));
227 struct protoent *getprotoent __P((void));
228 struct servent *getservbyname __P((const char *, const char *));
229 struct servent *getservbyport __P((int, const char *));
230 struct servent *getservent __P((void));
231 void herror __P((const char *));
232 __const char *hstrerror __P((int));
233 int innetgr __P((const char *, const char *, const char *,
235 void sethostent __P((int));
236 /* void sethostfile __P((const char *)); */
237 void setnetent __P((int));
238 void setprotoent __P((int));
239 int getaddrinfo __P((const char *, const char *,
240 const struct addrinfo *, struct addrinfo **));
241 int getnameinfo __P((const struct sockaddr *, socklen_t, char *,
242 size_t, char *, size_t, int));
243 void freeaddrinfo __P((struct addrinfo *));
244 char *gai_strerror __P((int));
245 void setnetgrent __P((const char *));
246 void setservent __P((int));
249 * PRIVATE functions specific to the FreeBSD implementation
252 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
253 void _sethosthtent __P((int));
254 void _endhosthtent __P((void));
255 void _sethostdnsent __P((int));
256 void _endhostdnsent __P((void));
257 void _setnethtent __P((int));
258 void _endnethtent __P((void));
259 void _setnetdnsent __P((int));
260 void _endnetdnsent __P((void));
261 struct hostent * _gethostbynisname __P((const char *, int));
262 struct hostent * _gethostbynisaddr __P((const char *, int, int));
263 void _map_v4v6_address __P((const char *src, char *dst));
264 void _map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len));
267 #endif /* !_NETDB_H_ */