/**
* OWASP Benchmark Project v1.2
*
* This file is part of the Open Web Application Security Project (OWASP)
* Benchmark Project. For details, please see
* <a href="https://owasp.org/www-project-benchmark/">https://owasp.org/www-project-benchmark/</a>.
*
* The OWASP Benchmark 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, version 2.
*
* The OWASP Benchmark 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.
*
* @author Dave Wichers
* @created 2015
*/

package org.owasp.benchmark.testcode;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(value="/cmdi-01/BenchmarkTest01689")
public class BenchmarkTest01689 extends HttpServlet {
	
	private static final long serialVersionUID = 1L;
	
	@Override
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	@Override
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
	
		String queryString = request.getQueryString();
		String paramval = "BenchmarkTest01689"+"=";
		int paramLoc = -1;
		if (queryString != null) paramLoc = queryString.indexOf(paramval);
		if (paramLoc == -1) {
			response.getWriter().println("getQueryString() couldn't find expected parameter '" + "BenchmarkTest01689" + "' in query string.");
			return;
		}
		
		String param = queryString.substring(paramLoc + paramval.length()); // 1st assume "BenchmarkTest01689" param is last parameter in query string.
		// And then check to see if its in the middle of the query string and if so, trim off what comes after.
		int ampersandLoc = queryString.indexOf("&", paramLoc);
		if (ampersandLoc != -1) {
			param = queryString.substring(paramLoc + paramval.length(), ampersandLoc);
		}
		param = java.net.URLDecoder.decode(param, "UTF-8");

		String bar = new Test().doSomething(request, param);
		
		String cmd = "";
        String osName = System.getProperty("os.name");
        if (osName.indexOf("Windows") != -1) {
        	cmd = org.owasp.benchmark.helpers.Utils.getOSCommandString("echo");
        }
        
		String[] argsEnv = { "Foo=bar" };
		Runtime r = Runtime.getRuntime();

		try {
			Process p = r.exec(cmd + bar, argsEnv);
			org.owasp.benchmark.helpers.Utils.printOSCommandResults(p, response);
		} catch (IOException e) {
			System.out.println("Problem executing cmdi - TestCase");
			response.getWriter().println(
			  org.owasp.esapi.ESAPI.encoder().encodeForHTML(e.getMessage())
			);
			return;
		}
	}  // end doPost

	
    private class Test {

        public String doSomething(HttpServletRequest request, String param) throws ServletException, IOException {

		String bar;
		
		// Simple if statement that assigns param to bar on true condition
		int num = 196;
		if ( (500/42) + num > 200 )
		   bar = param;
		else bar = "This should never happen"; 

            return bar;
        }
    } // end innerclass Test

} // end DataflowThruInnerClass
