/* Look up an environment variable more securely.

   Copyright 2013-2015 Free Software Foundation, Inc.

   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 of the License, 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 <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include <stdlib.h>

#if !HAVE___SECURE_GETENV

# if HAVE_ISSETUGID

#  include <unistd.h>

# else

#  undef issetugid

#  define issetugid() 1

# endif

#endif

char *

secure_getenv (char const *name)

{

#if HAVE___SECURE_GETENV

  return __secure_getenv (name);

#else

  if (issetugid ())

    return 0;

  return getenv (name);

#endif

}