Mike Frysinger
5 years ago
11 changed files with 570 additions and 15 deletions
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# netdb_h.m4 serial 12 |
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dnl Copyright (C) 2008-2021 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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AC_DEFUN([gl_HEADER_NETDB], |
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[ |
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AC_REQUIRE([gl_NETDB_H_DEFAULTS]) |
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gl_CHECK_NEXT_HEADERS([netdb.h]) |
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if test $ac_cv_header_netdb_h = yes; then |
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HAVE_NETDB_H=1 |
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else |
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HAVE_NETDB_H=0 |
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fi |
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AC_SUBST([HAVE_NETDB_H]) |
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|
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dnl Check for declarations of anything we want to poison if the |
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dnl corresponding gnulib module is not in use. |
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gl_WARN_ON_USE_PREPARE([[#include <netdb.h>]], |
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[getaddrinfo freeaddrinfo gai_strerror getnameinfo]) |
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]) |
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AC_DEFUN([gl_NETDB_MODULE_INDICATOR], |
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[ |
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dnl Use AC_REQUIRE here, so that the default settings are expanded once only. |
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AC_REQUIRE([gl_NETDB_H_DEFAULTS]) |
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gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
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dnl Define it also as a C macro, for the benefit of the unit tests. |
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gl_MODULE_INDICATOR_FOR_TESTS([$1]) |
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]) |
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AC_DEFUN([gl_NETDB_H_DEFAULTS], |
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[ |
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GNULIB_GETADDRINFO=0; AC_SUBST([GNULIB_GETADDRINFO]) |
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dnl Assume proper GNU behavior unless another module says otherwise. |
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HAVE_STRUCT_ADDRINFO=1; AC_SUBST([HAVE_STRUCT_ADDRINFO]) |
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HAVE_DECL_FREEADDRINFO=1; AC_SUBST([HAVE_DECL_FREEADDRINFO]) |
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HAVE_DECL_GAI_STRERROR=1; AC_SUBST([HAVE_DECL_GAI_STRERROR]) |
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HAVE_DECL_GETADDRINFO=1; AC_SUBST([HAVE_DECL_GETADDRINFO]) |
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HAVE_DECL_GETNAMEINFO=1; AC_SUBST([HAVE_DECL_GETNAMEINFO]) |
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REPLACE_GAI_STRERROR=0; AC_SUBST([REPLACE_GAI_STRERROR]) |
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REPLACE_GETADDRINFO=0; AC_SUBST([REPLACE_GETADDRINFO]) |
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]) |
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@ -0,0 +1,295 @@ |
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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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|
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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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