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annotate flys-client/src/main/java/de/intevation/flys/client/server/LoginServlet.java @ 2970:b89dd09b486c

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Also log an authentication failure flys-client/trunk@4966 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Fri, 13 Jul 2012 06:57:00 +0000
parents 16c71457ed43
children 6266dff93ed2
rev   line source
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192eddbbd4cf Implement a login page to be able to authenticate a user
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1 package de.intevation.flys.client.server;
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2
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3 import java.io.IOException;
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4
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5 import javax.servlet.ServletException;
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6 import javax.servlet.http.HttpServlet;
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7 import javax.servlet.http.HttpServletRequest;
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8 import javax.servlet.http.HttpServletResponse;
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9 import javax.servlet.http.HttpSession;
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10
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11 import org.apache.log4j.Logger;
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12
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13 import de.intevation.flys.client.server.auth.Authentication;
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14 import de.intevation.flys.client.server.auth.AuthenticationException;
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15 import de.intevation.flys.client.server.auth.AuthenticationFactory;
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16 import de.intevation.flys.client.server.auth.User;
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17
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18 public class LoginServlet extends HttpServlet {
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19
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20 private static Logger logger = Logger.getLogger(LoginServlet.class);
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21
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22 private void redirectFailure(HttpServletResponse resp) throws IOException {
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23 resp.sendRedirect("/login.jsp");
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24 }
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25
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26 private void redirectFailure(HttpServletResponse resp, Exception e) throws IOException {
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27 resp.sendRedirect("/login.jsp?error=" + e.getMessage());
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28 }
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29
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30 private void redirectSuccess(HttpServletResponse resp, String uri) throws IOException {
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31 if (uri == null) {
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32 uri = "/FLYS.html";
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33 }
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34 resp.sendRedirect(uri);
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35 }
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36
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37 @Override
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38 protected void doGet(HttpServletRequest req, HttpServletResponse resp)
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39 throws ServletException, IOException {
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40 logger.debug("Processing get request");
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41 this.redirectFailure(resp);
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42 }
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43
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44 @Override
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45 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
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46 throws ServletException, IOException {
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47 String encoding = req.getCharacterEncoding();
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48 String username = req.getParameter("username");
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49 String password = req.getParameter("password");
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50
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51 logger.debug("Processing post request");
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52
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53 if (username == null || password == null) {
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54 logger.debug("No username or password provided");
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55 this.redirectFailure(resp);
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56 }
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57 try {
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58 Authentication aresp = this.auth(username, password, encoding);
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59 if (aresp == null || !aresp.isSuccess()) {
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60 logger.debug("Athentication not successful");
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61 this.redirectFailure(resp);
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62 }
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63 HttpSession session = req.getSession();
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64 User user = aresp.getUser();
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65 session.setAttribute("user", user);
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66
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67 String uri = (String)session.getAttribute("requesturi");
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68
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69 this.redirectSuccess(resp, uri);
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70 }
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71 catch(AuthenticationException e) {
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72 logger.error(e);
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73 this.redirectFailure(resp, e);
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74 }
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75 }
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76
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77 private Authentication auth(String username, String password, String encoding)
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78 throws AuthenticationException, IOException {
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79 String auth = this.getInitParameter("authentication");
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80 return AuthenticationFactory.getInstance(auth).auth(username, password, encoding);
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81 }
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82 }
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