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/* $Id: suidprotect.c,v 1.1 2001/08/19 00:27:16 dm Exp $ */
/*
*
* Copyright (C) 2001 David Mazieres (dm@uun.org)
*
* 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 2, 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include "sysconf.h"
int
suidsafe (void)
{
static int safe;
if (!safe) {
if (suidprotect && getuid ()
#if defined (HAVE_ISSETUGID)
&& issetugid ()
#elif defined (HAVE_GETEUID) && defined (HAVE_GETEGID)
&& (getuid () != geteuid () || getgid () != getegid ())
#endif /* HAVE_GETEUID and HAVE_GETEGID */
)
safe = -1;
else
safe = 1;
}
return safe < 0 ? 0 : 1;
}
char *
safegetenv (const char *name)
{
return suidsafe () ? getenv (name) : NULL;
}
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