+
−/* 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 Lesser 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
+
−   Lesser General Public License for more details.
+
−
+
−   You should have received a copy of the GNU Lesser 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
+
−}