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annotate flys-client/src/main/java/de/intevation/flys/client/server/LoginServlet.java @ 5526:35cd6286da2d

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WQAdaptedInputPanel: Switch focus when input had been done via inputhelper (part flys/issue1133).
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 28 Mar 2013 11:36:19 +0100
parents 82cc03e5f1c4
children
rev   line source
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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.ServletContext;
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7 import javax.servlet.http.HttpServlet;
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8 import javax.servlet.http.HttpServletRequest;
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9 import javax.servlet.http.HttpServletResponse;
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10 import javax.servlet.http.HttpSession;
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11
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12 import org.apache.log4j.Logger;
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13
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14 import de.intevation.flys.client.server.auth.Authentication;
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15 import de.intevation.flys.client.server.auth.AuthenticationException;
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16 import de.intevation.flys.client.server.auth.AuthenticationFactory;
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17 import de.intevation.flys.client.server.auth.User;
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18 import de.intevation.flys.client.server.auth.UserClient;
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19 import de.intevation.flys.client.server.features.Features;
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20
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21 public class LoginServlet extends HttpServlet {
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22
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23 private static Logger logger = Logger.getLogger(LoginServlet.class);
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24
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25 private static final String FLYS_PAGE = "FLYS.html";
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26 private static final String LOGIN_PAGE = "login.jsp";
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27
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28 private void redirectFailure(HttpServletResponse resp, String path)
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29 throws IOException {
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30 resp.sendRedirect(path + "/" + LOGIN_PAGE);
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31 }
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32
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33 private void redirectFailure(HttpServletResponse resp, String path,
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34 Exception e) throws IOException {
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35 this.redirectFailure(resp, path, e.getMessage());
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36 }
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37
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38 private void redirectFailure(HttpServletResponse resp, String path,
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39 String message) throws IOException {
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40 resp.sendRedirect(path + "/" + LOGIN_PAGE + "?error=" + message);
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41 }
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42
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43 private void redirectSuccess(HttpServletResponse resp, String path,
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44 String uri) throws IOException {
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45 if (uri == null) {
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46 String redirecturl = getServletContext().getInitParameter("redirect-url");
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47 if (redirecturl == null) {
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48 redirecturl = FLYS_PAGE;
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49 }
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50 uri = "/" + redirecturl;
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51 }
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52 resp.sendRedirect(uri);
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53 }
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54
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55 @Override
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56 protected void doGet(HttpServletRequest req, HttpServletResponse resp)
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57 throws ServletException, IOException {
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58 logger.debug("Processing get request");
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59 this.redirectFailure(resp, req.getContextPath());
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60 }
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61
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62 @Override
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63 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
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64 throws ServletException, IOException
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65 {
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66 String encoding = req.getCharacterEncoding();
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67 String username = req.getParameter("username");
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68 String password = req.getParameter("password");
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69
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70 logger.debug("Processing post request");
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71
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72 if (username == null || password == null) {
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73 logger.debug("No username or password provided");
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74 this.redirectFailure(resp, req.getContextPath());
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75 return;
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76 }
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77
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78 try {
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79 Authentication aresp = this.auth(username, password, encoding);
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80 if (aresp == null || !aresp.isSuccess()) {
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81 logger.debug("Authentication not successful");
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82 this.redirectFailure(resp, req.getContextPath());
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83 return;
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84 }
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85 User user = aresp.getUser();
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86
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87 String url = getServletContext().getInitParameter("server-url");
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88 UserClient client = new UserClient(url);
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89 if (!client.userExists(user)) {
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90 logger.debug("Creating db user");
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91 if (!client.createUser(user)) {
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92 this.redirectFailure(resp, req.getContextPath(),
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93 "Could not create new user");
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94 return;
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95 }
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96 }
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97
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98 HttpSession session = req.getSession();
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99 session.setAttribute("user", user);
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100
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101 String uri = (String)session.getAttribute("requesturi");
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102
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103 this.redirectSuccess(resp, req.getContextPath(), uri);
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104 }
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105 catch(AuthenticationException e) {
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106 logger.error(e, e);
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107 this.redirectFailure(resp, req.getContextPath(), e);
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108 }
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109 }
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110
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111 private Authentication auth(String username, String password, String encoding)
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112 throws AuthenticationException, IOException
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113 {
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114 ServletContext sc = this.getServletContext();
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115 Features features = (Features)sc.getAttribute(Features.CONTEXT_ATTRIBUTE);
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116 String auth = sc.getInitParameter("authentication");
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117 return AuthenticationFactory.getInstance(auth).auth(username, password,
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118 encoding, features);
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119 }
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120 }
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