src/org/cacert/gigi/Gigi.java

   1 package org.cacert.gigi;
   2
   3 import java.io.IOException;
   4 import java.security.cert.X509Certificate;
   5 import java.util.HashMap;
   6
   7 import javax.servlet.ServletException;
   8 import javax.servlet.http.HttpServlet;
   9 import javax.servlet.http.HttpServletRequest;
  10 import javax.servlet.http.HttpServletResponse;
  11 import javax.servlet.http.HttpSession;
  12
  13 import org.cacert.gigi.pages.LoginPage;
  14 import org.cacert.gigi.pages.MainPage;
  15 import org.cacert.gigi.pages.Page;
  16
  17 public class Gigi extends HttpServlet {
  18         private HashMap<String, Page> pages = new HashMap<String, Page>();
  19
  20         @Override
  21         public void init() throws ServletException {
  22                 pages.put("/login", new LoginPage("CACert - Login"));
  23                 pages.put("/", new MainPage("CACert - Home"));
  24                 super.init();
  25         }
  26
  27         @Override
  28         protected void service(HttpServletRequest req, HttpServletResponse resp)
  29                         throws ServletException, IOException {
  30                 X509Certificate[] cert = (X509Certificate[]) req
  31                                 .getAttribute("javax.servlet.request.X509Certificate");
  32                 HttpSession hs = req.getSession(false);
  33                 if (hs == null || !((Boolean) hs.getAttribute("loggedin"))) {
  34                         if (cert != null) {
  35                                 tryAuthWithCertificate(req, cert[0]);
  36                                 hs = req.getSession(false);
  37                         }
  38                 }
  39                 if (hs != null && ((Boolean) hs.getAttribute("loggedin"))
  40                                 && req.getPathInfo().equals("/login")) {
  41                         resp.sendRedirect("/");
  42                         return;
  43                 }
  44                 if (req.getMethod().equals("POST") && req.getPathInfo() != null
  45                                 && req.getPathInfo().equals("/login")) {
  46                         authWithUnpw(req);
  47                         resp.sendRedirect("/");
  48                         return;
  49                 }
  50                 if (req.getPathInfo() != null && req.getPathInfo().equals("/logout")) {
  51                         if (hs != null) {
  52                                 hs.setAttribute("loggedin", false);
  53                                 hs.invalidate();
  54                         }
  55                         resp.sendRedirect("/");
  56                         return;
  57                 }
  58
  59                 if ((hs == null || !((Boolean) hs.getAttribute("loggedin")))
  60                                 && !"/login".equals(req.getPathInfo())) {
  61                         System.out.println(req.getPathInfo());
  62                         resp.sendRedirect("/login");
  63                         return;
  64                 }
  65                 if (pages.containsKey(req.getPathInfo())) {
  66                         Page p = pages.get(req.getPathInfo());
  67                         p.doGet(req, resp);
  68                 } else {
  69                         resp.sendError(404, "Page not found.");
  70                 }
  71
  72         }
  73
  74         private void authWithUnpw(HttpServletRequest req) {
  75                 String un = req.getParameter("username");
  76                 String pw = req.getParameter("password");
  77                 // TODO dummy password check if (un.equals(pw)) {
  78                 HttpSession hs = req.getSession();
  79                 hs.setAttribute("loggedin", true);
  80         }
  81
  82         private void tryAuthWithCertificate(HttpServletRequest req,
  83                         X509Certificate x509Certificate) {
  84                 // TODO ckeck if certificate is valid
  85                 HttpSession hs = req.getSession();
  86                 hs.setAttribute("loggedin", true);
  87         }
  88 }