Java tutorial
/** * 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://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(value = "/weakrand-04/BenchmarkTest01869") public class BenchmarkTest01869 extends HttpServlet { private static final long serialVersionUID = 1L; @Override public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { javax.servlet.http.Cookie userCookie = new javax.servlet.http.Cookie("BenchmarkTest01869", "whatever"); userCookie.setMaxAge(60 * 3); //Store cookie for 3 minutes userCookie.setSecure(true); userCookie.setPath(request.getRequestURI()); response.addCookie(userCookie); javax.servlet.RequestDispatcher rd = request.getRequestDispatcher("/weakrand-04/BenchmarkTest01869.html"); rd.include(request, response); } @Override public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); javax.servlet.http.Cookie[] theCookies = request.getCookies(); String param = "noCookieValueSupplied"; if (theCookies != null) { for (javax.servlet.http.Cookie theCookie : theCookies) { if (theCookie.getName().equals("BenchmarkTest01869")) { param = java.net.URLDecoder.decode(theCookie.getValue(), "UTF-8"); break; } } } String bar = doSomething(request, param); try { java.security.SecureRandom secureRandomGenerator = java.security.SecureRandom.getInstance("SHA1PRNG"); // Get 40 random bytes byte[] randomBytes = new byte[40]; secureRandomGenerator.nextBytes(randomBytes); String rememberMeKey = org.owasp.esapi.ESAPI.encoder().encodeForBase64(randomBytes, true); String user = "SafeByron"; 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(); if (cookies != null) { for (int i = 0; !foundUser && i < cookies.length; i++) { 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); // rememberMe.setPath("/benchmark/" + this.getClass().getSimpleName()); rememberMe.setPath(request.getRequestURI()); // i.e., set path to JUST this servlet // e.g., /benchmark/sql-01/BenchmarkTest01001 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/>"); } } catch (java.security.NoSuchAlgorithmException e) { System.out.println("Problem executing SecureRandom.nextBytes() - TestCase"); throw new ServletException(e); } finally { response.getWriter().println("Randomness Test java.security.SecureRandom.nextBytes(byte[]) executed"); } } // end doPost private static String doSomething(HttpServletRequest request, String param) throws ServletException, IOException { String bar = org.apache.commons.lang.StringEscapeUtils.escapeHtml(param); return bar; } }