2 * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
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
33 * @(#)netdb.h 5.15 (Berkeley) 4/3/91
39 #define _PATH_HEQUIV "/etc/hosts.equiv"
40 #define _PATH_HOSTS "/etc/hosts"
41 #define _PATH_NETWORKS "/etc/networks"
42 #define _PATH_PROTOCOLS "/etc/protocols"
43 #define _PATH_SERVICES "/etc/services"
44 #define _PATH_SERVACCES "/etc/serv.access"
47 * Structures returned by network data base library. All addresses are
48 * supplied in host order, and returned in network order (suitable for
49 * use in system calls).
52 char *h_name
; /* official name of host */
53 char **h_aliases
; /* alias list */
54 int h_addrtype
; /* host address type */
55 int h_length
; /* length of address */
56 char **h_addr_list
; /* list of addresses from name server */
57 #define h_addr h_addr_list[0] /* address, for backward compatiblity */
61 * Assumption here is that a network number
62 * fits in 32 bits -- probably a poor one.
65 char *n_name
; /* official name of net */
66 char **n_aliases
; /* alias list */
67 int n_addrtype
; /* net address type */
68 unsigned long n_net
; /* network # */
72 char *s_name
; /* official service name */
73 char **s_aliases
; /* alias list */
74 int s_port
; /* port # */
75 char *s_proto
; /* protocol to use */
79 char *p_name
; /* official protocol name */
80 char **p_aliases
; /* alias list */
81 int p_proto
; /* protocol # */
85 * Error return codes from gethostbyname() and gethostbyaddr()
86 * (left in extern int h_errno).
90 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
91 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */
92 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
93 #define NO_DATA 4 /* Valid name, no data record of requested type */
94 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
100 void endhostent
_ARGS((void));
101 void endnetent
_ARGS((void));
102 void endprotoent
_ARGS((void));
103 void endservent
_ARGS((void));
104 struct hostent
*gethostbyaddr
_ARGS((const char *, int, int));
105 struct hostent
*gethostbyname
_ARGS((const char *));
106 struct hostent
*gethostent
_ARGS((void));
107 struct netent
*getnetbyaddr
_ARGS((long, int)); /* u_long? */
108 struct netent
*getnetbyname
_ARGS((const char *));
109 struct netent
*getnetent
_ARGS((void));
110 struct protoent
*getprotobyname
_ARGS((const char *));
111 struct protoent
*getprotobynumber
_ARGS((int));
112 struct protoent
*getprotoent
_ARGS((void));
113 struct servent
*getservbyname
_ARGS((const char *, const char *));
114 struct servent
*getservbyport
_ARGS((int, const char *));
115 struct servent
*getservent
_ARGS((void));
116 void herror
_ARGS((const char *));
117 void sethostent
_ARGS((int));
118 /* void sethostfile _ARGS((const char *)); */
119 void setnetent
_ARGS((int));
120 void setprotoent
_ARGS((int));
121 void setservent
_ARGS((int));
123 int servxcheck
_ARGS((unsigned long _peer
, const char *_service
,
124 void (*_logf
) _ARGS((int _pass
, const char *_name
))));
125 char *servxfile
_ARGS((const char *_file
));
129 * The definitions below are based on
130 * http://www.opengroup.org/onlinepubs/009695399/basedefs/netdb.h.html
135 /* headers exposed by netdb.h */
136 #include <inttypes.h>
137 #include <netinet/in.h>
138 #include <sys/socket.h>
140 /* struct for use with getaddrinfo() */
143 int ai_flags
; /* Input flags */
144 int ai_family
; /* Address family of socket */
145 int ai_socktype
; /* Socket type */
146 int ai_protocol
; /* Protocol of socket */
147 socklen_t ai_addrlen
; /* Length of socket address */
148 struct sockaddr
*ai_addr
; /* Socket address of socket */
149 char *ai_canonname
; /* Canonical name of service location */
150 struct addrinfo
*ai_next
; /* Pointer to next in list */
153 /* values for struct addrinfo.ai_flags */
154 #define AI_PASSIVE 0x00000001
155 #define AI_CANONNAME 0x00000002
156 #define AI_NUMERICHOST 0x00000004
157 #define AI_NUMERICSERV 0x00000008
159 #define AI_V4MAPPED 0x00000010
160 #define AI_ALL 0x00000020
161 #define AI_ADDRCONFIG 0x00000040
164 /* flags for getnameinfo() */
165 /* #define NI_NOFQDN 0x00000001 */
166 #define NI_NUMERICHOST 0x00000002
167 #define NI_NAMEREQD 0x00000004
168 #define NI_NUMERICSERV 0x00000008
169 /* #define NI_NUMERICSCOPE 0x00000010 */
170 #define NI_DGRAM 0x00000020
172 /* error values for getaddrinfo() and getnameinfo() */
174 #define EAI_BADFLAGS 2
179 #define EAI_SERVICE 7
180 #define EAI_SOCKTYPE 8
182 #define EAI_OVERFLOW 10
184 /* getaddrinfo() and friends */
185 void freeaddrinfo(struct addrinfo
*ai
);
186 int getaddrinfo(const char *nodename
,
187 const char *servname
,
188 const struct addrinfo
*hints
,
189 struct addrinfo
**res
);
190 int getnameinfo(const struct sockaddr
*sa
, socklen_t salen
,
191 char *node
, socklen_t nodelen
, char *service
,
192 socklen_t servicelen
, int flags
);
193 const char *gai_strerror(int ecode
);
197 #endif /* !_NETDB_H_ */