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netdb.in.h
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/* Provide a netdb.h header file for systems lacking it (read: MinGW).
Copyright (C) 2008-2010 Free Software Foundation, Inc.
Written by Simon Josefsson.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* This file is supposed to be used on platforms that lack <netdb.h>.
It is intended to provide definitions and prototypes needed by an
application. */
#ifndef _GL_NETDB_H
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
#if @HAVE_NETDB_H@
/* The include_next requires a split double-inclusion guard. */
# @INCLUDE_NEXT@ @NEXT_NETDB_H@
#endif
#ifndef _GL_NETDB_H
#define _GL_NETDB_H
/* Get netdb.h definitions such as struct hostent for MinGW. */
#include <sys/socket.h>
/* The definition of _GL_ARG_NONNULL is copied here. */
/* The definition of _GL_WARN_ON_USE is copied here. */
/* Declarations for a platform that lacks <netdb.h>, or where it is
incomplete. */
#if @GNULIB_GETADDRINFO@
# if !@HAVE_STRUCT_ADDRINFO@
/* Structure to contain information about address of a service provider. */
struct addrinfo
{
int ai_flags; /* Input flags. */
int ai_family; /* Protocol family for socket. */
int ai_socktype; /* Socket type. */
int ai_protocol; /* Protocol for socket. */
socklen_t ai_addrlen; /* Length of socket address. */
struct sockaddr *ai_addr; /* Socket address for socket. */
char *ai_canonname; /* Canonical name for service location. */
struct addrinfo *ai_next; /* Pointer to next in list. */
};
# endif
/* Possible values for `ai_flags' field in `addrinfo' structure. */
# ifndef AI_PASSIVE
# define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
# endif
# ifndef AI_CANONNAME
# define AI_CANONNAME 0x0002 /* Request for canonical name. */
# endif
# ifndef AI_NUMERICSERV
# define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
# endif
# if 0
# define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
# endif
/* These symbolic constants are required to be present by POSIX, but
our getaddrinfo replacement doesn't use them (yet). Setting them
to 0 on systems that doesn't have them avoids causing problems for
system getaddrinfo implementations that would be confused by
unknown values. */
# ifndef AI_V4MAPPED
# define AI_V4MAPPED 0 /* 0x0008: IPv4 mapped addresses are acceptable. */
# endif
# ifndef AI_ALL
# define AI_ALL 0 /* 0x0010: Return IPv4 mapped and IPv6 addresses. */
# endif
# ifndef AI_ADDRCONFIG
# define AI_ADDRCONFIG 0 /* 0x0020: Use configuration of this host to choose
returned address type. */
# endif
/* Error values for `getaddrinfo' function. */
# ifndef EAI_BADFLAGS
# define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
# define EAI_NODATA -5 /* No address associated with NAME. */
# define EAI_FAMILY -6 /* `ai_family' not supported. */
# define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
# define EAI_MEMORY -10 /* Memory allocation failure. */
# endif
/* Since EAI_NODATA is deprecated by RFC3493, some systems (at least
FreeBSD, which does define EAI_BADFLAGS) have removed the definition
in favor of EAI_NONAME. */
# if !defined EAI_NODATA && defined EAI_NONAME
# define EAI_NODATA EAI_NONAME
# endif
# ifndef EAI_OVERFLOW
/* Not defined on mingw32 and Haiku. */
# define EAI_OVERFLOW -12 /* Argument buffer overflow. */
# endif
# ifndef EAI_ADDRFAMILY
/* Not defined on mingw32. */
# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
# endif
# ifndef EAI_SYSTEM
/* Not defined on mingw32. */
# define EAI_SYSTEM -11 /* System error returned in `errno'. */
# endif
# if 0
/* The commented out definitions below are not yet implemented in the
GNULIB getaddrinfo() replacement, so are not yet needed.
If they are restored, be sure to protect the definitions with #ifndef. */
# ifndef EAI_INPROGRESS
# define EAI_INPROGRESS -100 /* Processing request in progress. */
# define EAI_CANCELED -101 /* Request canceled. */
# define EAI_NOTCANCELED -102 /* Request not canceled. */
# define EAI_ALLDONE -103 /* All requests done. */
# define EAI_INTR -104 /* Interrupted by a signal. */
# define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
# endif
# endif
# if !@HAVE_DECL_GETADDRINFO@
/* Translate name of a service location and/or a service name to set of
socket addresses.
For more details, see the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
extern int getaddrinfo (const char *restrict nodename,
const char *restrict servname,
const struct addrinfo *restrict hints,
struct addrinfo **restrict res)
_GL_ARG_NONNULL ((4));
# endif
# if !@HAVE_DECL_FREEADDRINFO@
/* Free `addrinfo' structure AI including associated storage.
For more details, see the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
extern void freeaddrinfo (struct addrinfo *ai) _GL_ARG_NONNULL ((1));
# endif
# if !@HAVE_DECL_GAI_STRERROR@
/* Convert error return from getaddrinfo() to a string.
For more details, see the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/gai_strerror.html>. */
extern const char *gai_strerror (int ecode);
# endif
# if !@HAVE_DECL_GETNAMEINFO@
/* Convert socket address to printable node and service names.
For more details, see the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/getnameinfo.html>. */
extern int getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
char *restrict node, socklen_t nodelen,
char *restrict service, socklen_t servicelen,
int flags)
_GL_ARG_NONNULL ((1));
# endif
/* Possible flags for getnameinfo. */
# ifndef NI_NUMERICHOST
# define NI_NUMERICHOST 1
# endif
# ifndef NI_NUMERICSERV
# define NI_NUMERICSERV 2
# endif
#elif defined GNULIB_POSIXCHECK
# undef getaddrinfo
# if HAVE_RAW_DECL_GETADDRINFO
_GL_WARN_ON_USE (getaddrinfo, "getaddrinfo is unportable - "
"use gnulib module getaddrinfo for portability");
# endif
# undef freeaddrinfo
# if HAVE_RAW_DECL_FREEADDRINFO
_GL_WARN_ON_USE (freeaddrinfo, "freeaddrinfo is unportable - "
"use gnulib module getaddrinfo for portability");
# endif
# undef gai_strerror
# if HAVE_RAW_DECL_GAI_STRERROR
_GL_WARN_ON_USE (gai_strerror, "gai_strerror is unportable - "
"use gnulib module getaddrinfo for portability");
# endif
# undef getnameinfo
# if HAVE_RAW_DECL_GETNAMEINFO
_GL_WARN_ON_USE (getnameinfo, "getnameinfo is unportable - "
"use gnulib module getaddrinfo for portability");
# endif
#endif
#endif /* _GL_NETDB_H */
#endif /* _GL_NETDB_H */