/*
 *  swrap by Davide Libenzi (secure exec wrapper)
 *  Copyright (C) 2003  Davide Libenzi
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Davide Libenzi <davidel@xmailserver.org>
 *
 */

#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>


static void usage(char *prg) {

	fprintf(stderr, "%s uid gid cmd [param ...]\n", prg);
}

int main(int ac, char **av) {

	if (ac < 4) {
		usage(av[0]);
		return 1;
	}
	if (setgid(atoi(av[2])) || setuid(atoi(av[1]))) {
		perror("setgid/setuid");
		return 2;
	}
	execvp(av[3], &av[3]);
	perror(av[3]);
	return 3;
}