296 lines
10 KiB
C
296 lines
10 KiB
C
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/* Provide a netdb.h header file for systems lacking it (read: MinGW).
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Copyright (C) 2008-2021 Free Software Foundation, Inc.
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Written by Simon Josefsson.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>. */
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/* This file is supposed to be used on platforms that lack <netdb.h>.
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It is intended to provide definitions and prototypes needed by an
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application. */
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#ifndef _@GUARD_PREFIX@_NETDB_H
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#if __GNUC__ >= 3
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@PRAGMA_SYSTEM_HEADER@
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#endif
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@PRAGMA_COLUMNS@
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#if @HAVE_NETDB_H@
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/* The include_next requires a split double-inclusion guard. */
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# @INCLUDE_NEXT@ @NEXT_NETDB_H@
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#endif
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#ifndef _@GUARD_PREFIX@_NETDB_H
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#define _@GUARD_PREFIX@_NETDB_H
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/* Get <netdb.h> definitions such as 'socklen_t' on IRIX 6.5 and OSF/1 4.0 and
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'struct hostent' on MinGW. */
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#include <sys/socket.h>
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/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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/* The definition of _GL_ARG_NONNULL is copied here. */
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/* The definition of _GL_WARN_ON_USE is copied here. */
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/* Declarations for a platform that lacks <netdb.h>, or where it is
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incomplete. */
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#if @GNULIB_GETADDRINFO@
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# if !@HAVE_STRUCT_ADDRINFO@
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# ifdef __cplusplus
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extern "C" {
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# endif
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# if !GNULIB_defined_struct_addrinfo
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/* Structure to contain information about address of a service provider. */
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struct addrinfo
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{
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int ai_flags; /* Input flags. */
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int ai_family; /* Protocol family for socket. */
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int ai_socktype; /* Socket type. */
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int ai_protocol; /* Protocol for socket. */
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socklen_t ai_addrlen; /* Length of socket address. */
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struct sockaddr *ai_addr; /* Socket address for socket. */
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char *ai_canonname; /* Canonical name for service location. */
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struct addrinfo *ai_next; /* Pointer to next in list. */
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};
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# define GNULIB_defined_struct_addrinfo 1
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# endif
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# ifdef __cplusplus
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}
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# endif
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# endif
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/* Possible values for 'ai_flags' field in 'addrinfo' structure. */
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# ifndef AI_PASSIVE
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# define AI_PASSIVE 0x0001 /* Socket address is intended for 'bind'. */
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# endif
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# ifndef AI_CANONNAME
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# define AI_CANONNAME 0x0002 /* Request for canonical name. */
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# endif
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# ifndef AI_NUMERICSERV
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# define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
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# endif
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# if 0
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# define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
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# endif
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/* These symbolic constants are required to be present by POSIX, but
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our getaddrinfo replacement doesn't use them (yet). Setting them
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to 0 on systems that doesn't have them avoids causing problems for
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system getaddrinfo implementations that would be confused by
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unknown values. */
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# ifndef AI_V4MAPPED
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# define AI_V4MAPPED 0 /* 0x0008: IPv4 mapped addresses are acceptable. */
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# endif
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# ifndef AI_ALL
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# define AI_ALL 0 /* 0x0010: Return IPv4 mapped and IPv6 addresses. */
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# endif
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# ifndef AI_ADDRCONFIG
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# define AI_ADDRCONFIG 0 /* 0x0020: Use configuration of this host to choose
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returned address type. */
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# endif
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/* Error values for 'getaddrinfo' function. */
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# ifndef EAI_BADFLAGS
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# define EAI_BADFLAGS -1 /* Invalid value for 'ai_flags' field. */
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# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
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# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
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# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
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# define EAI_NODATA -5 /* No address associated with NAME. */
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# define EAI_FAMILY -6 /* 'ai_family' not supported. */
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# define EAI_SOCKTYPE -7 /* 'ai_socktype' not supported. */
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# define EAI_SERVICE -8 /* SERVICE not supported for 'ai_socktype'. */
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# define EAI_MEMORY -10 /* Memory allocation failure. */
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# endif
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/* Since EAI_NODATA is deprecated by RFC3493, some systems (at least
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FreeBSD, which does define EAI_BADFLAGS) have removed the definition
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in favor of EAI_NONAME. */
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# if !defined EAI_NODATA && defined EAI_NONAME
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# define EAI_NODATA EAI_NONAME
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# endif
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# ifndef EAI_OVERFLOW
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/* Not defined on mingw32 and Haiku. */
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# define EAI_OVERFLOW -12 /* Argument buffer overflow. */
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# endif
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# ifndef EAI_ADDRFAMILY
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/* Not defined on mingw32. */
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# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
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# endif
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# ifndef EAI_SYSTEM
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/* Not defined on mingw32. */
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# define EAI_SYSTEM -11 /* System error returned in 'errno'. */
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# endif
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# if 0
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/* The commented out definitions below are not yet implemented in the
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GNULIB getaddrinfo() replacement, so are not yet needed.
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If they are restored, be sure to protect the definitions with #ifndef. */
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# ifndef EAI_INPROGRESS
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# define EAI_INPROGRESS -100 /* Processing request in progress. */
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# define EAI_CANCELED -101 /* Request canceled. */
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# define EAI_NOTCANCELED -102 /* Request not canceled. */
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# define EAI_ALLDONE -103 /* All requests done. */
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# define EAI_INTR -104 /* Interrupted by a signal. */
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# define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
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# endif
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# endif
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/* Translate name of a service location and/or a service name to set of
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socket addresses.
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For more details, see the POSIX:2008 specification
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<https://pubs.opengroup.org/onlinepubs/9699919799/functions/getaddrinfo.html>. */
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# if @REPLACE_GETADDRINFO@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef getaddrinfo
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# define getaddrinfo rpl_getaddrinfo
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# endif
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_GL_FUNCDECL_RPL (getaddrinfo, int,
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(const char *restrict nodename,
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const char *restrict servname,
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const struct addrinfo *restrict hints,
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struct addrinfo **restrict res)
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_GL_ARG_NONNULL ((4)));
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_GL_CXXALIAS_RPL (getaddrinfo, int,
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(const char *restrict nodename,
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const char *restrict servname,
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const struct addrinfo *restrict hints,
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struct addrinfo **restrict res));
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# else
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# if !@HAVE_DECL_GETADDRINFO@
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_GL_FUNCDECL_SYS (getaddrinfo, int,
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(const char *restrict nodename,
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const char *restrict servname,
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const struct addrinfo *restrict hints,
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struct addrinfo **restrict res)
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_GL_ARG_NONNULL ((4)));
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# endif
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_GL_CXXALIAS_SYS (getaddrinfo, int,
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(const char *restrict nodename,
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const char *restrict servname,
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const struct addrinfo *restrict hints,
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struct addrinfo **restrict res));
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# endif
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_GL_CXXALIASWARN (getaddrinfo);
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/* Free 'addrinfo' structure AI including associated storage.
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For more details, see the POSIX:2008 specification
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<https://pubs.opengroup.org/onlinepubs/9699919799/functions/getaddrinfo.html>. */
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# if @REPLACE_GETADDRINFO@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef freeaddrinfo
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# define freeaddrinfo rpl_freeaddrinfo
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# endif
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_GL_FUNCDECL_RPL (freeaddrinfo, void, (struct addrinfo *ai)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_RPL (freeaddrinfo, void, (struct addrinfo *ai));
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# else
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# if !@HAVE_DECL_FREEADDRINFO@
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_GL_FUNCDECL_SYS (freeaddrinfo, void, (struct addrinfo *ai)
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_GL_ARG_NONNULL ((1)));
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# endif
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_GL_CXXALIAS_SYS (freeaddrinfo, void, (struct addrinfo *ai));
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# endif
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_GL_CXXALIASWARN (freeaddrinfo);
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# if @REPLACE_GAI_STRERROR@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef gai_strerror
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# define gai_strerror rpl_gai_strerror
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# endif
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_GL_FUNCDECL_RPL (gai_strerror, const char *, (int ecode));
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_GL_CXXALIAS_RPL (gai_strerror, const char *, (int ecode));
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# else
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# if !@HAVE_DECL_GAI_STRERROR@
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/* Convert error return from getaddrinfo() to a string.
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For more details, see the POSIX:2008 specification
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<https://pubs.opengroup.org/onlinepubs/9699919799/functions/gai_strerror.html>. */
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_GL_FUNCDECL_SYS (gai_strerror, const char *, (int ecode));
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# endif
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_GL_CXXALIAS_SYS (gai_strerror, const char *, (int ecode));
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# endif
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# if __GLIBC__ >= 2
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_GL_CXXALIASWARN (gai_strerror);
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# endif
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# if !@HAVE_DECL_GETNAMEINFO@
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/* Convert socket address to printable node and service names.
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For more details, see the POSIX:2008 specification
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<https://pubs.opengroup.org/onlinepubs/9699919799/functions/getnameinfo.html>. */
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_GL_FUNCDECL_SYS (getnameinfo, int,
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(const struct sockaddr *restrict sa, socklen_t salen,
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char *restrict node, socklen_t nodelen,
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char *restrict service, socklen_t servicelen,
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int flags)
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_GL_ARG_NONNULL ((1)));
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# endif
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/* Need to cast, because on glibc systems, the seventh parameter is
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unsigned int flags. */
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_GL_CXXALIAS_SYS_CAST (getnameinfo, int,
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(const struct sockaddr *restrict sa, socklen_t salen,
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char *restrict node, socklen_t nodelen,
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char *restrict service, socklen_t servicelen,
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int flags));
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_GL_CXXALIASWARN (getnameinfo);
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/* Possible flags for getnameinfo. */
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# ifndef NI_NUMERICHOST
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# define NI_NUMERICHOST 1
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# endif
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# ifndef NI_NUMERICSERV
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# define NI_NUMERICSERV 2
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef getaddrinfo
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# if HAVE_RAW_DECL_GETADDRINFO
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_GL_WARN_ON_USE (getaddrinfo, "getaddrinfo is unportable - "
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"use gnulib module getaddrinfo for portability");
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# endif
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# undef freeaddrinfo
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# if HAVE_RAW_DECL_FREEADDRINFO
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_GL_WARN_ON_USE (freeaddrinfo, "freeaddrinfo is unportable - "
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"use gnulib module getaddrinfo for portability");
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# endif
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# undef gai_strerror
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# if HAVE_RAW_DECL_GAI_STRERROR
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_GL_WARN_ON_USE (gai_strerror, "gai_strerror is unportable - "
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"use gnulib module getaddrinfo for portability");
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# endif
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# undef getnameinfo
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# if HAVE_RAW_DECL_GETNAMEINFO
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_GL_WARN_ON_USE (getnameinfo, "getnameinfo is unportable - "
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"use gnulib module getaddrinfo for portability");
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# endif
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#endif
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#endif /* _@GUARD_PREFIX@_NETDB_H */
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#endif /* _@GUARD_PREFIX@_NETDB_H */
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