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
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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.
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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 $
64 #include <sys/cdefs.h>
65 #include <sys/types.h>
68 # define _PATH_HEQUIV "/etc/hosts.equiv"
70 #define _PATH_HOSTS "/etc/hosts"
71 #define _PATH_NETWORKS "/etc/networks"
72 #define _PATH_PROTOCOLS "/etc/protocols"
73 #define _PATH_SERVICES "/etc/services"
78 * Structures returned by network data base library. All addresses are
79 * supplied in host order, and returned in network order (suitable for
80 * use in system calls).
83 char *h_name; /* official name of host */
84 char **h_aliases; /* alias list */
85 int h_addrtype; /* host address type */
86 int h_length; /* length of address */
87 char **h_addr_list; /* list of addresses from name server */
88 #define h_addr h_addr_list[0] /* address, for backward compatibility */
92 * Assumption here is that a network number
93 * fits in an unsigned long -- probably a poor one.
96 char *n_name; /* official name of net */
97 char **n_aliases; /* alias list */
98 int n_addrtype; /* net address type */
99 unsigned long n_net; /* network # */
103 char *s_name; /* official service name */
104 char **s_aliases; /* alias list */
105 int s_port; /* port # */
106 char *s_proto; /* protocol to use */
110 char *p_name; /* official protocol name */
111 char **p_aliases; /* alias list */
112 int p_proto; /* protocol # */
116 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
117 int ai_family; /* PF_xxx */
118 int ai_socktype; /* SOCK_xxx */
119 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
120 size_t ai_addrlen; /* length of ai_addr */
121 char *ai_canonname; /* canonical name for hostname */
122 struct sockaddr *ai_addr; /* binary address */
123 struct addrinfo *ai_next; /* next structure in linked list */
127 * Error return codes from gethostbyname() and gethostbyaddr()
128 * (left in extern int h_errno).
131 #define NETDB_INTERNAL -1 /* see errno */
132 #define NETDB_SUCCESS 0 /* no problem */
133 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
134 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
135 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
136 #define NO_DATA 4 /* Valid name, no data record of requested type */
137 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
140 * Error return codes from getaddrinfo()
142 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
143 #define EAI_AGAIN 2 /* temporary failure in name resolution */
144 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
145 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
146 #define EAI_FAMILY 5 /* ai_family not supported */
147 #define EAI_MEMORY 6 /* memory allocation failure */
148 #define EAI_NODATA 7 /* no address associated with hostname */
149 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
150 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
151 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
152 #define EAI_SYSTEM 11 /* system error returned in errno */
153 #define EAI_BADHINTS 12
154 #define EAI_PROTOCOL 13
155 #define EAI_RESNULL 14
159 * Flag values for getaddrinfo()
161 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
162 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
163 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
164 /* valid flags for addrinfo */
165 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
167 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
168 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
169 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
170 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
171 /* special recommended flags for getipnodebyname */
172 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
175 * Constants for getnameinfo()
177 #define NI_MAXHOST 1025
178 #define NI_MAXSERV 32
181 * Flag values for getnameinfo()
183 #define NI_NOFQDN 0x00000001
184 #define NI_NUMERICHOST 0x00000002
185 #define NI_NAMEREQD 0x00000004
186 #define NI_NUMERICSERV 0x00000008
187 #define NI_DGRAM 0x00000010
188 #define NI_WITHSCOPEID 0x00000020
191 * Scope delimit character
193 #define SCOPE_DELIMITER '%'
196 void endhostent __P((void));
197 void endnetent __P((void));
198 void endprotoent __P((void));
199 void endservent __P((void));
200 void freehostent __P((struct hostent *));
201 struct hostent *gethostbyaddr __P((const char *, int, int));
202 struct hostent *gethostbyname __P((const char *));
203 struct hostent *gethostbyname2 __P((const char *, int));
204 struct hostent *gethostent __P((void));
205 struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *));
206 struct hostent *getipnodebyname __P((const char *, int, int, int *));
207 struct netent *getnetbyaddr __P((unsigned long, int));
208 struct netent *getnetbyname __P((const char *));
209 struct netent *getnetent __P((void));
210 struct protoent *getprotobyname __P((const char *));
211 struct protoent *getprotobynumber __P((int));
212 struct protoent *getprotoent __P((void));
213 struct servent *getservbyname __P((const char *, const char *));
214 struct servent *getservbyport __P((int, const char *));
215 struct servent *getservent __P((void));
216 void herror __P((const char *));
217 __const char *hstrerror __P((int));
218 void sethostent __P((int));
219 /* void sethostfile __P((const char *)); */
220 void setnetent __P((int));
221 void setprotoent __P((int));
222 int getaddrinfo __P((const char *, const char *,
223 const struct addrinfo *, struct addrinfo **));
224 int getnameinfo __P((const struct sockaddr *, size_t, char *,
225 size_t, char *, size_t, int));
226 void freeaddrinfo __P((struct addrinfo *));
227 char *gai_strerror __P((int));
228 void setservent __P((int));
231 * PRIVATE functions specific to the FreeBSD implementation
234 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
235 void _sethosthtent __P((int));
236 void _endhosthtent __P((void));
237 void _sethostdnsent __P((int));
238 void _endhostdnsent __P((void));
239 void _setnethtent __P((int));
240 void _endnethtent __P((void));
241 void _setnetdnsent __P((int));
242 void _endnetdnsent __P((void));
243 struct hostent * _gethostbyhtname __P((const char *, int));
244 struct hostent * _gethostbydnsname __P((const char *, int));
245 struct hostent * _gethostbynisname __P((const char *, int));
246 struct hostent * _gethostbyhtaddr __P((const char *, int, int));
247 struct hostent * _gethostbydnsaddr __P((const char *, int, int));
248 struct hostent * _gethostbynisaddr __P((const char *, int, int));
249 struct netent * _getnetbyhtname __P((const char *));
250 struct netent * _getnetbydnsname __P((const char *));
251 struct netent * _getnetbynisname __P((const char *));
252 struct netent * _getnetbyhtaddr __P((unsigned long, int));
253 struct netent * _getnetbydnsaddr __P((unsigned long, int));
254 struct netent * _getnetbynisaddr __P((unsigned long, int));
255 void _map_v4v6_address __P((const char *src, char *dst));
256 void _map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len));
259 #endif /* !_NETDB_H_ */