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
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
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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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 <sys/cdefs.h>
65 #include <sys/_types.h>
67 #ifndef _SIZE_T_DECLARED
68 typedef __size_t size_t;
69 #define _SIZE_T_DECLARED
72 #ifndef _SOCKLEN_T_DECLARED
73 typedef __socklen_t socklen_t;
74 #define _SOCKLEN_T_DECLARED
78 # define _PATH_HEQUIV "/etc/hosts.equiv"
80 #define _PATH_HOSTS "/etc/hosts"
81 #define _PATH_NETWORKS "/etc/networks"
82 #define _PATH_PROTOCOLS "/etc/protocols"
83 #define _PATH_SERVICES "/etc/services"
85 #define h_errno (*__h_error())
88 * Structures returned by network data base library. All addresses are
89 * supplied in host order, and returned in network order (suitable for
90 * use in system calls).
93 char *h_name; /* official name of host */
94 char **h_aliases; /* alias list */
95 int h_addrtype; /* host address type */
96 int h_length; /* length of address */
97 char **h_addr_list; /* list of addresses from name server */
98 #define h_addr h_addr_list[0] /* address, for backward compatibility */
102 * Assumption here is that a network number
103 * fits in an unsigned long -- probably a poor one.
106 char *n_name; /* official name of net */
107 char **n_aliases; /* alias list */
108 int n_addrtype; /* net address type */
109 unsigned long n_net; /* network # */
113 char *s_name; /* official service name */
114 char **s_aliases; /* alias list */
115 int s_port; /* port # */
116 char *s_proto; /* protocol to use */
120 char *p_name; /* official protocol name */
121 char **p_aliases; /* alias list */
122 int p_proto; /* protocol # */
126 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
127 int ai_family; /* PF_xxx */
128 int ai_socktype; /* SOCK_xxx */
129 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
130 size_t ai_addrlen; /* length of ai_addr */
131 char *ai_canonname; /* canonical name for hostname */
132 struct sockaddr *ai_addr; /* binary address */
133 struct addrinfo *ai_next; /* next structure in linked list */
137 * Error return codes from gethostbyname() and gethostbyaddr()
141 #define NETDB_INTERNAL -1 /* see errno */
142 #define NETDB_SUCCESS 0 /* no problem */
143 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
144 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
145 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
146 #define NO_DATA 4 /* Valid name, no data record of requested type */
147 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
150 * Error return codes from getaddrinfo()
154 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
156 #define EAI_AGAIN 2 /* temporary failure in name resolution */
157 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
158 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
159 #define EAI_FAMILY 5 /* ai_family not supported */
160 #define EAI_MEMORY 6 /* memory allocation failure */
163 #define EAI_NODATA 7 /* no address associated with hostname */
165 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
166 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
167 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
168 #define EAI_SYSTEM 11 /* system error returned in errno */
169 #define EAI_BADHINTS 12
170 #define EAI_PROTOCOL 13
174 * Flag values for getaddrinfo()
176 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
177 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
178 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
179 /* valid flags for addrinfo */
181 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_ADDRCONFIG)
183 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
184 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
185 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
186 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
187 /* special recommended flags for getipnodebyname */
188 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
191 * Constants for getnameinfo()
193 #define NI_MAXHOST 1025
194 #define NI_MAXSERV 32
197 * Flag values for getnameinfo()
199 #define NI_NOFQDN 0x00000001
200 #define NI_NUMERICHOST 0x00000002
201 #define NI_NAMEREQD 0x00000004
202 #define NI_NUMERICSERV 0x00000008
203 #define NI_DGRAM 0x00000010
205 #define NI_WITHSCOPEID 0x00000020
209 * Scope delimit character
211 #define SCOPE_DELIMITER '%'
214 void endhostent(void);
215 void endnetent(void);
216 void endnetgrent(void);
217 void endprotoent(void);
218 void endservent(void);
219 void freehostent(struct hostent *);
220 struct hostent *gethostbyaddr(const char *, int, int);
221 struct hostent *gethostbyname(const char *);
222 struct hostent *gethostbyname2(const char *, int);
223 struct hostent *gethostent(void);
224 struct hostent *getipnodebyaddr(const void *, size_t, int, int *);
225 struct hostent *getipnodebyname(const char *, int, int, int *);
226 struct netent *getnetbyaddr(unsigned long, int);
227 struct netent *getnetbyname(const char *);
228 struct netent *getnetent(void);
229 int getnetgrent(char **, char **, char **);
230 struct protoent *getprotobyname(const char *);
231 struct protoent *getprotobynumber(int);
232 struct protoent *getprotoent(void);
233 struct servent *getservbyname(const char *, const char *);
234 struct servent *getservbyport(int, const char *);
235 struct servent *getservent(void);
236 void herror(const char *);
237 __const char *hstrerror(int);
238 int innetgr(const char *, const char *, const char *, const char *);
239 void sethostent(int);
240 /* void sethostfile(const char *); */
242 void setprotoent(int);
243 int getaddrinfo(const char *, const char *,
244 const struct addrinfo *, struct addrinfo **);
245 int getnameinfo(const struct sockaddr *, socklen_t, char *,
246 size_t, char *, size_t, int);
247 void freeaddrinfo(struct addrinfo *);
248 char *gai_strerror(int);
249 void setnetgrent(const char *);
250 void setservent(int);
253 * PRIVATE functions specific to the FreeBSD implementation
256 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
257 int * __h_error(void);
258 void _sethosthtent(int);
259 void _endhosthtent(void);
260 void _sethostdnsent(int);
261 void _endhostdnsent(void);
262 void _setnethtent(int);
263 void _endnethtent(void);
264 void _setnetdnsent(int);
265 void _endnetdnsent(void);
266 struct hostent * _gethostbynisname(const char *, int);
267 struct hostent * _gethostbynisaddr(const char *, int, int);
268 void _map_v4v6_address(const char *, char *);
269 void _map_v4v6_hostent(struct hostent *, char **, char **);
272 #endif /* !_NETDB_H_ */