text: /* Provide a netdb.h header file for systems lacking it (read: MinGW).
     Copyright (C) 2008-2020 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, see <https://www.gnu.org/licenses/>.  */
  
  /* 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 _@GUARD_PREFIX@_NETDB_H
  
  #if __GNUC__ >= 3
  @PRAGMA_SYSTEM_HEADER@
  #endif
  @PRAGMA_COLUMNS@
  
  #if @HAVE_NETDB_H@
  
  /* The include_next requires a split double-inclusion guard.  */
  # @INCLUDE_NEXT@ @NEXT_NETDB_H@
  
  #endif
  
  #ifndef _@GUARD_PREFIX@_NETDB_H
  #define _@GUARD_PREFIX@_NETDB_H
  
  /* Get <netdb.h> definitions such as 'socklen_t' on IRIX 6.5 and OSF/1 4.0 and
     'struct hostent' on MinGW.  */
  #include <sys/socket.h>
  
  /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  
  /* 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@
  
  #  ifdef __cplusplus
  extern "C" {
  #  endif
  
  #  if !GNULIB_defined_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.  */
  };
  #   define GNULIB_defined_struct_addrinfo 1
  #  endif
  
  #  ifdef __cplusplus
  }
  #  endif
  
  # 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
  
  /* Translate name of a service location and/or a service name to set of
     socket addresses.
     For more details, see the POSIX:2008 specification
     <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getaddrinfo.html>.  */
  # if @REPLACE_GETADDRINFO@
  #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  #   undef getaddrinfo
  #   define getaddrinfo rpl_getaddrinfo
  #  endif
  _GL_FUNCDECL_RPL (getaddrinfo, int,
                    (const char *restrict nodename,
                     const char *restrict servname,
                     const struct addrinfo *restrict hints,
                     struct addrinfo **restrict res)
                    _GL_ARG_NONNULL ((4)));
  _GL_CXXALIAS_RPL (getaddrinfo, int,
                    (const char *restrict nodename,
                     const char *restrict servname,
                     const struct addrinfo *restrict hints,
                     struct addrinfo **restrict res));
  # else
  #  if !@HAVE_DECL_GETADDRINFO@
  _GL_FUNCDECL_SYS (getaddrinfo, int,
                    (const char *restrict nodename,
                     const char *restrict servname,
                     const struct addrinfo *restrict hints,
                     struct addrinfo **restrict res)
                    _GL_ARG_NONNULL ((4)));
  #  endif
  _GL_CXXALIAS_SYS (getaddrinfo, int,
                    (const char *restrict nodename,
                     const char *restrict servname,
                     const struct addrinfo *restrict hints,
                     struct addrinfo **restrict res));
  # endif
  _GL_CXXALIASWARN (getaddrinfo);
  
  /* Free 'addrinfo' structure AI including associated storage.
     For more details, see the POSIX:2008 specification
     <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getaddrinfo.html>.  */
  # if @REPLACE_GETADDRINFO@
  #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  #   undef freeaddrinfo
  #   define freeaddrinfo rpl_freeaddrinfo
  #  endif
  _GL_FUNCDECL_RPL (freeaddrinfo, void, (struct addrinfo *ai)
                                        _GL_ARG_NONNULL ((1)));
  _GL_CXXALIAS_RPL (freeaddrinfo, void, (struct addrinfo *ai));
  # else
  #  if !@HAVE_DECL_FREEADDRINFO@
  _GL_FUNCDECL_SYS (freeaddrinfo, void, (struct addrinfo *ai)
                                        _GL_ARG_NONNULL ((1)));
  #  endif
  _GL_CXXALIAS_SYS (freeaddrinfo, void, (struct addrinfo *ai));
  # endif
  _GL_CXXALIASWARN (freeaddrinfo);
  
  # if @REPLACE_GAI_STRERROR@
  #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  #   undef gai_strerror
  #   define gai_strerror rpl_gai_strerror
  #  endif
  _GL_FUNCDECL_RPL (gai_strerror, const char *, (int ecode));
  _GL_CXXALIAS_RPL (gai_strerror, const char *, (int ecode));
  # else
  #  if !@HAVE_DECL_GAI_STRERROR@
  /* Convert error return from getaddrinfo() to a string.
     For more details, see the POSIX:2008 specification
     <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gai_strerror.html>.  */
  _GL_FUNCDECL_SYS (gai_strerror, const char *, (int ecode));
  #  endif
  _GL_CXXALIAS_SYS (gai_strerror, const char *, (int ecode));
  # endif
  _GL_CXXALIASWARN (gai_strerror);
  
  # if !@HAVE_DECL_GETNAMEINFO@
  /* Convert socket address to printable node and service names.
     For more details, see the POSIX:2008 specification
     <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getnameinfo.html>.  */
  _GL_FUNCDECL_SYS (getnameinfo, int,
                    (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
  /* Need to cast, because on glibc systems, the seventh parameter is
                          unsigned int flags.  */
  _GL_CXXALIAS_SYS_CAST (getnameinfo, int,
                         (const struct sockaddr *restrict sa, socklen_t salen,
                          char *restrict node, socklen_t nodelen,
                          char *restrict service, socklen_t servicelen,
                          int flags));
  _GL_CXXALIASWARN (getnameinfo);
  
  /* 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 /* _@GUARD_PREFIX@_NETDB_H */
  #endif /* _@GUARD_PREFIX@_NETDB_H */
  