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1/* Provide a netdb.h header file for systems lacking it (read: MinGW).
2 Copyright (C) 2008 Free Software Foundation, Inc.
3 Written by Simon Josefsson.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
18
19/* This file is supposed to be used on platforms that lack <netdb.h>.
20 It is intended to provide definitions and prototypes needed by an
21 application. */
22
23#ifndef _GL_NETDB_H
24
25#if @HAVE_NETDB_H@
26
27# if __GNUC__ >= 3
28@PRAGMA_SYSTEM_HEADER@
29# endif
30
31/* The include_next requires a split double-inclusion guard. */
32# @INCLUDE_NEXT@ @NEXT_NETDB_H@
33
34#endif
35
36#ifndef _GL_NETDB_H
37#define _GL_NETDB_H
38
39/* Get netdb.h definitions such as struct hostent for MinGW. */
40#include <sys/socket.h>
41
42/* Declarations for a platform that lacks <netdb.h>, or where it is
43 incomplete. */
44
45#if @GNULIB_GETADDRINFO@
46
47# if !@HAVE_STRUCT_ADDRINFO@
48
49/* Structure to contain information about address of a service provider. */
50struct addrinfo
51{
52 int ai_flags; /* Input flags. */
53 int ai_family; /* Protocol family for socket. */
54 int ai_socktype; /* Socket type. */
55 int ai_protocol; /* Protocol for socket. */
56 socklen_t ai_addrlen; /* Length of socket address. */
57 struct sockaddr *ai_addr; /* Socket address for socket. */
58 char *ai_canonname; /* Canonical name for service location. */
59 struct addrinfo *ai_next; /* Pointer to next in list. */
60};
61# endif
62
63/* Possible values for `ai_flags' field in `addrinfo' structure. */
64# ifndef AI_PASSIVE
65# define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
66# endif
67# ifndef AI_CANONNAME
68# define AI_CANONNAME 0x0002 /* Request for canonical name. */
69# endif
70# ifndef AI_NUMERICSERV
71# define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
72# endif
73
74# if 0
75/* The commented out definitions below are not yet implemented in the
76 GNULIB getaddrinfo() replacement, so are not yet needed and may, in fact,
77 cause conflicts on systems with a getaddrinfo() function which does not
78 define them.
79
80 If they are restored, be sure to protect the definitions with #ifndef. */
81# define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
82# define AI_V4MAPPED 0x0008 /* IPv4 mapped addresses are acceptable. */
83# define AI_ALL 0x0010 /* Return IPv4 mapped and IPv6 addresses. */
84# define AI_ADDRCONFIG 0x0020 /* Use configuration of this host to choose
85 returned address type.. */
86# endif /* 0 */
87
88/* Error values for `getaddrinfo' function. */
89# ifndef EAI_BADFLAGS
90# define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
91# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
92# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
93# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
94# define EAI_NODATA -5 /* No address associated with NAME. */
95# define EAI_FAMILY -6 /* `ai_family' not supported. */
96# define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
97# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
98# define EAI_MEMORY -10 /* Memory allocation failure. */
99# endif
100
101/* Since EAI_NODATA is deprecated by RFC3493, some systems (at least
102 FreeBSD, which does define EAI_BADFLAGS) have removed the definition
103 in favor of EAI_NONAME. */
104# if !defined EAI_NODATA && defined EAI_NONAME
105# define EAI_NODATA EAI_NONAME
106# endif
107
108# ifndef EAI_OVERFLOW
109/* Not defined on mingw32 and Haiku. */
110# define EAI_OVERFLOW -12 /* Argument buffer overflow. */
111# endif
112# ifndef EAI_ADDRFAMILY
113/* Not defined on mingw32. */
114# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
115# endif
116# ifndef EAI_SYSTEM
117/* Not defined on mingw32. */
118# define EAI_SYSTEM -11 /* System error returned in `errno'. */
119# endif
120
121# if 0
122/* The commented out definitions below are not yet implemented in the
123 GNULIB getaddrinfo() replacement, so are not yet needed.
124
125 If they are restored, be sure to protect the definitions with #ifndef. */
126# ifndef EAI_INPROGRESS
127# define EAI_INPROGRESS -100 /* Processing request in progress. */
128# define EAI_CANCELED -101 /* Request canceled. */
129# define EAI_NOTCANCELED -102 /* Request not canceled. */
130# define EAI_ALLDONE -103 /* All requests done. */
131# define EAI_INTR -104 /* Interrupted by a signal. */
132# define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
133# endif
134# endif
135
136# if !@HAVE_DECL_GETADDRINFO@
137/* Translate name of a service location and/or a service name to set of
138 socket addresses.
139 For more details, see the POSIX:2001 specification
140 <http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
141extern int getaddrinfo (const char *restrict nodename,
142 const char *restrict servname,
143 const struct addrinfo *restrict hints,
144 struct addrinfo **restrict res);
145# endif
146
147# if !@HAVE_DECL_FREEADDRINFO@
148/* Free `addrinfo' structure AI including associated storage.
149 For more details, see the POSIX:2001 specification
150 <http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
151extern void freeaddrinfo (struct addrinfo *ai);
152# endif
153
154# if !@HAVE_DECL_GAI_STRERROR@
155/* Convert error return from getaddrinfo() to a string.
156 For more details, see the POSIX:2001 specification
157 <http://www.opengroup.org/susv3xsh/gai_strerror.html>. */
158extern const char *gai_strerror (int ecode);
159# endif
160
161# if !@HAVE_DECL_GETNAMEINFO@
162/* Convert socket address to printable node and service names.
163 For more details, see the POSIX:2001 specification
164 <http://www.opengroup.org/susv3xsh/getnameinfo.html>. */
165extern int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen,
166 char *restrict node, socklen_t nodelen,
167 char *restrict service, socklen_t servicelen,
168 int flags);
169# endif
170
171/* Possible flags for getnameinfo. */
172# ifndef NI_NUMERICHOST
173# define NI_NUMERICHOST 1
174# endif
175# ifndef NI_NUMERICSERV
176# define NI_NUMERICSERV 2
177# endif
178
179#endif /* @GNULIB_GETADDRINFO@ */
180
181#endif /* _GL_NETDB_H */
182#endif /* _GL_NETDB_H */