Assignment4

package cookiejar;

import java.io.IOException;
import java.io.PrintWriter;

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

/**
 * Servlet implementation class CredentialsCookie
 */
@WebServlet("/CredentialsCookie")
public class CredentialsCookie extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();

		boolean checkCookie = false;
		Cookie cookie = null;
		Cookie[] cookies = request.getCookies();

		if(cookies!=null) {
			for(int i = 0; i < cookies.length; i++) {
				if(cookies[i].getName().equals("username")) {
					cookie = cookies[i];
					cookie.getValue();
					checkCookie = true;
					break;
				}
			}
		}

		if(!checkCookie) {

			String username = request.getParameter("username");
			if (username != null && username.length() > 0) {
				String userValue = request.getParameter("userValue");
				Cookie userCookie = new Cookie(username, userValue);
				userCookie.setPath("/");
				userCookie.setMaxAge(7*24*60*60);
				response.addCookie(userCookie);
			}

			String password = request.getParameter("password");
			if (password != null && password.length() > 0) {
				String passwordValue = request.getParameter("passwordValue");
				Cookie pwCookie = new Cookie(password, passwordValue);
				pwCookie.setPath("/");
				pwCookie.setMaxAge(7*24*60*60);
				response.addCookie(pwCookie);
			}
		}


		out.println("<html><title>Login</title>"
				+ "<form name='Login' action='CredentialsCookie' method='POST'>"
				+ "Username:<br> <input type='text' name='username' autofocus><br> "
				+ "Password:<br> <input type='text' name='password'><br><br>"
				+ "<input type='submit' value='Submit'></form></html>");
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		doGet(request, response);
	}

}