package members;import push.Birthday;import push.PushService;import push.PushInitiator;import push.User;import feedback.Feedback;import javax.servlet.*;import javax.servlet.http.*;import java.io.*;import java.util.*;import java.sql.*;import java.net.InetAddress;import java.net.URL;/** * Members login *  * @see HttpServlet */public final class Members extends HttpServlet {	private static final String XML_VERSION = "<?xml version=\"1.0\"?>";	private static final String CONTENT_TYPE = "text/vnd.wap.wml";	private static final String DOC_TYPE = "<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.1//EN\"\n"			+ "  \"http://www.wapforum.org/DTD/wml_1.1.xml\">";	private static Connection con;	private static Statement stmt = null;	private static String membersFile = null;	private static final String HOME_PAGE = "/index.jsp";	private static final String ADMIN_NAME = "admin";	/* push initiator */	private static PushInitiator pusher = null;	/* push proxy gateway url */	private static String ppgUrl = null;	private static String authorization = null;	/* push services */	private static Vector pushServices = new Vector();	private static Birthday birthdayChecker = null;	private static PushService pushServiceServer = null;	private static String pushSupportFile = null;	private static String pushAddressType = null;	/**	 * This is the initialization code that runs only once. The servlet is being	 * placed into service.	 * 	 * @exception ServletException	 *                if an error occurs	 */	public void init() throws ServletException {		String pushServiceStr = getInitParameter("pushservices");		StringTokenizer st = new StringTokenizer(pushServiceStr, ";");		String[] service;		while (st.hasMoreTokens()) {			try {				service = new String[2];				service[0] = st.nextToken().trim();				service[1] = st.nextToken().trim();				pushServices.add(service);			} catch (Exception e) {				System.err.println(e);				break;			}		}		// check, if proxy is set		boolean useProxy = new Boolean(getInitParameter("use-proxy"))				.booleanValue();		if (useProxy) {			// HTTP connections via a proxy server			String proxyHost = getInitParameter("proxy-host");			String proxyPort = getInitParameter("proxy-port");			System.setProperty("http.proxySet", "true");			System.setProperty("http.proxyHost", proxyHost);			System.setProperty("http.proxyPort", proxyPort);		}		try {			Class.forName(getInitParameter("dbdriver"));			con = DriverManager.getConnection(getInitParameter("database"),					getInitParameter("dbuser"),					getInitParameter("dbuserpasswd"));			stmt = con.createStatement();			try {				stmt						.executeUpdate("CREATE TABLE IF NOT EXISTS members (name VARCHAR(10) NOT NULL, passwd VARCHAR(10), dob VARCHAR(10), sex CHAR(1), email VARCHAR(30), phone VARCHAR(15), pushservices VARCHAR(20), PRIMARY KEY (name))");			} catch (SQLException e) {				System.err.println(e);			}		} catch (Exception ex) {			ex.printStackTrace();		}		/* Create a push initiator, used to initiate push messages */		ppgUrl = getInitParameter("ppg-url");		/* Some ppgs require authorization */		authorization = getInitParameter("authorization");		pushSupportFile = getInitParameter("pushsupport");		pushSupportFile = getServletContext().getRealPath(pushSupportFile);		/* Get push address type. It is either "IPv4" (default) or "PLMN". */		pushAddressType = getInitParameter("push-addresstype");		if (pushAddressType == null)			pushAddressType = "IPv4";	}	/**	 * Called by the server to allow a servlet to handle a GET request.	 * 	 * @param request	 *            a <code>HttpServletRequest</code> value	 * @param response	 *            a <code>HttpServletResponse</code> value	 * @exception ServletException	 *                if an error occurs	 * @exception IOException	 *                if an error occurs	 */	public void doGet(HttpServletRequest request, HttpServletResponse response)			throws ServletException, IOException {		doPost(request, response);	}	/**	 * Called by the server to allow a servlet to handle a POST request.	 * 	 * @param request	 *            a <code>HttpServletRequest</code> value	 * @param response	 *            a <code>HttpServletResponse</code> value	 * @exception ServletException	 *                if an error occurs	 * @exception IOException	 *                if an error occurs	 */	public void doPost(HttpServletRequest request, HttpServletResponse response)			throws ServletException, IOException {		HttpSession session = request.getSession();		boolean cookiesCheck = request.getHeader("cookie") != null				&& request.isRequestedSessionIdValid();		final String jsessionID = cookiesCheck ? "" : ";jsessionid="				+ session.getId();		/*		 * Request parameter "action" has one of the following values: - "login"		 * - "new" - "checkin" - "change" - "delete" - "view" - "update" -		 * "insert"		 */		String action = request.getParameter("action");		if (action == null)			action = "login"; // default action		String name = null;		String passwd = null;		String dob = null;		String sex = null;		String email = null;		String phone = null;		String pushservices = null;		if (action.equals("new") || action.equals("update")				|| action.equals("insert") || action.equals("checkin")) {			name = action.equals("update") ? (String) session					.getAttribute("name") : request.getParameter("name");			passwd = request.getParameter("passwd");			dob = request.getParameter("dob");			sex = request.getParameter("sex");			email = request.getParameter("email");			phone = request.getParameter("phone");			pushservices = request.getParameter("pushservices");		} else { // set values from the session attributes			name = (String) session.getAttribute("name");			passwd = (String) session.getAttribute("passwd");			dob = (String) session.getAttribute("dob");			sex = (String) session.getAttribute("sex");			email = (String) session.getAttribute("email");			phone = (String) session.getAttribute("phone");			pushservices = (String) session.getAttribute("pushservices");		}		// check if the client device supports WAP push */		boolean isPushSupported = pushSupported(request);		// assing a push-info object into session information of the user */		if (name != null) {			if (session.getAttribute("push-info") == null && isPushSupported)				session.setAttribute("push-info", new User(name, request						.getRemoteAddr()));		}		if (pusher == null) {			try {				URL contextRoot = new URL("http://" + request.getServerName()						+ ":" + request.getServerPort()						+ request.getContextPath() + "/");				pusher = new PushInitiator(new URL(contextRoot, ppgUrl),						authorization);			} catch (Exception e) {				System.err.println(e);			}		}		/*		 * Create a members' birthday checker thread. A push message is sent		 * when the birthday of a member is approaching		 */		if (birthdayChecker == null) {			birthdayChecker = new Birthday(pusher, "http://"					+ request.getServerName() + ":" + request.getServerPort()					+ request.getContextPath() + HOME_PAGE, pushAddressType);			new Thread(birthdayChecker).start();		}		/*		 * Create a push service server thread. The thread sends push messages		 * to users. A user will receive push messages if he/she has selected		 * any push services.		 */		if (pushServiceServer == null) {			pushServiceServer = new PushService(pusher, "http://"					+ request.getServerName() + ":" + request.getServerPort()					+ request.getContextPath(), pushAddressType, 24);			new Thread(pushServiceServer).start();		}		// start generating the response ...		response.setContentType(CONTENT_TYPE);		// prevent caching of the response		response.setHeader("cache-control", "no-cache");		PrintWriter out = response.getWriter();		out.println(XML_VERSION);		out.println(DOC_TYPE);		out.println("<wml>");		out.println("<!-- provides a way back using the prev element -->\n"				+ "<template>" + " <do type=\"prev\">" + "  <prev/>" + " </do>"				+ "</template>");		/* Handle the "login" action */		if (action.equals("login")) {			if (name == null) {				out						.println("<card title=\"Members\" id=\"login1\">"								+ " <p>Name: <input name=\"name\"/>"								+ "Password: <input type=\"password\" name=\"passwd\"/><br/>"								+ "  <anchor title=\"Ok\">Ok"								+ "   <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "    <postfield name=\"name\" value=\"$(name)\"/>"								+ "    <postfield name=\"passwd\" value=\"$(passwd)\"/>"								+ "    <postfield name=\"action\" value=\"checkin\"/>"								+ "   </go>"								+ "  </anchor><br/>"								+ "  <anchor title=\"New member\">New member"								+ "   <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "     <postfield name=\"action\" value=\"new\"/>"								+ "   </go>"								+ "  </anchor>"								+ " </p>"								+ " <do type=\"accept\" label=\"Ok\" name=\"1\">"								+ "  <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "   <postfield name=\"name\" value=\"$(name)\"/>"								+ "   <postfield name=\"passwd\" value=\"$(passwd)\"/>"								+ "   <postfield name=\"action\" value=\"checkin\"/>"								+ "  </go>"								+ " </do>"								+ " <do type=\"accept\" label=\"New member\" name=\"5\">"								+ "  <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "   <postfield name=\"action\" value=\"new\"/>"								+ "  </go>" + " </do>" + "</card>");			} else { // name != null				out						.println("<card title=\"Members\" id=\"login\">"								+ " <p>Next weekend all members can enjoy a free snack at the Safari restaurant<br/>"								+ "  <anchor title=\"My membership\">My membership"								+ "   <go href=\"#membership\"/>"								+ "  </anchor></p>" + "</card>");				out						.println("<card title=\"My membership\" id=\"membership\">"								+ " <p>Member name:&#160; <strong>"								+ name								+ "</strong><br/>"								+ "  <anchor title=\"View\">View info"								+ "   <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "    <postfield name=\"action\" value=\"view\"/>"								+ "   </go>"								+ "  </anchor><br/>"								+ "  <anchor title=\"Change\">Edit"								+ "   <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "    <postfield name=\"action\" value=\"change\"/>"								+ "   </go>"								+ "  </anchor><br/>"								+ "  <anchor title=\"End membership\">End membership"								+ "   <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "    <postfield name=\"action\" value=\"delete\"/>"								+ "   </go>"								+ "  </anchor>"								+ " </p>"								+ " <do type=\"accept\" label=\"View info\" name=\"3\">"								+ "  <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "   <postfield name=\"action\" value=\"view\"/>"								+ "  </go>"								+ " </do>"								+ " <do type=\"accept\" label=\"Edit\" name=\"4\">"								+ "  <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "   <postfield name=\"action\" value=\"change\"/>"								+ "  </go>"								+ " </do>"								+ " <do type=\"accept\" label=\"End membership\" name=\"2\">"								+ "  <go method=\"post\" href=\""								+ request.getRequestURI()								+ jsessionID								+ "\">"								+ "   <postfield name=\"action\" value=\"delete\"/>"								+ "  </go>" + " </do>" + "</card>");			}		}		// View member information.		// The "action" request parameter "action" has the value "view".		else if (action.equals("view")) {			out.println("<card title=\"View\" id=\"view\">"					+ " <p>Date of birth: " + dob + "<br/>" + "Sex: " + sex					+ "<br/>" + "E-Mail: " + email + "<br/>" + "Phone: "					+ phone + "<br/>");			out.print("Push-Services: ");			StringTokenizer st = new StringTokenizer(pushservices, ";");			while (st.hasMoreTokens())				out.println(((String[]) pushServices.get(Integer.parseInt(st						.nextToken())))[0]);			out.println(" </p>" + " <do type=\"accept\" label=\"Ok\">"					+ "  <go href=\"" + request.getContextPath() + HOME_PAGE					+ jsessionID + "\"/>" + " </do>" + "</card>");		}		// Delete member information from the database.		// "action" has the value "delete".		else if (action.equals("delete")) {			int nDeletedRows = 0;			try {