Subversion Repositories wimsdev

/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis

 *

 *  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 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, write to the Free Software

 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

/* Wrap uid and exec */

#include <unistd.h>

#include <string.h>

#include <assert.h>

int main(int argc,char *argv[])

{

    char *args[1024];

    int i, uid1, uid2, gid1, gid2;

    if(argc<2) return 0;

    for(i=0;i<1000 && i<argc; i++) args[i]=argv[i+1];

    args[i]=NULL;

    uid1=geteuid(); uid2=getuid(); gid1=getegid(); gid2=getgid();

    if(strchr(args[0],'/')) {

      assert(setreuid(uid1,uid2)==0);

      assert(setregid(gid1,gid2)==0);

      execv(args[0],args);

    }

    else {

      assert(setreuid(uid1,uid1)==0);

      assert(setregid(gid1,gid1)==0);

      execvp(args[0],args);

    }

    return 127;

}