/**
* OWASP Benchmark Project v1.2beta
*
* This file is part of the Open Web Application Security Project (OWASP)
* Benchmark Project. For details, please see
* <a href="https://www.owasp.org/index.php/Benchmark">https://www.owasp.org/index.php/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 Nick Sanidas <a href="https://www.aspectsecurity.com">Aspect Security</a>
* @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("/BenchmarkTest02300")
public class BenchmarkTest02300 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");

		java.util.Map<String,String[]> map = request.getParameterMap();
		String param = "";
		if (!map.isEmpty()) {
			String[] values = map.get("vector");
			if (values != null) param = values[0];
		}
		

		String bar = doSomething(param);
		
		float rand = new java.util.Random().nextFloat();
		String rememberMeKey = Float.toString(rand).substring(2); // Trim off the 0. at the front.
		
		String user = "Floyd";
		String fullClassName = this.getClass().getName();
		String testCaseNumber = fullClassName.substring(fullClassName.lastIndexOf('.')+1+"BenchmarkTest".length());
		user+= testCaseNumber;
		
		String cookieName = "rememberMe" + testCaseNumber;
		
		boolean foundUser = false;
		javax.servlet.http.Cookie[] cookies = request.getCookies();
		for (int i = 0; cookies != null && ++i < cookies.length && !foundUser;) {
			javax.servlet.http.Cookie cookie = cookies[i];
			if (cookieName.equals(cookie.getName())) {
				if (cookie.getValue().equals(request.getSession().getAttribute(cookieName))) {
					foundUser = true;
				}
			}
		}
		
		if (foundUser) {
			response.getWriter().println("Welcome back: " + user + "<br/>");			
		} else {			
			javax.servlet.http.Cookie rememberMe = new javax.servlet.http.Cookie(cookieName, rememberMeKey);
			rememberMe.setSecure(true);
			request.getSession().setAttribute(cookieName, rememberMeKey);
			response.addCookie(rememberMe);
			response.getWriter().println(user + " has been remembered with cookie: " + rememberMe.getName() 
					+ " whose value is: " + rememberMe.getValue() + "<br/>");
		}
		
		response.getWriter().println("Weak Randomness Test java.util.Random.nextFloat() executed");
	}  // end doPost
	
	private static String doSomething(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;	
	}
}
