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annotate flys-client/src/main/java/de/intevation/flys/client/server/GGInAFilter.java @ 2974:8255247da645

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Implement re-authentication if the user (ticket) has expired. Every "ticket" in GGInA has an end date. Therefore send a new authentication request if the current date is after the end date. flys-client/trunk@4970 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Fri, 13 Jul 2012 07:56:10 +0000
parents c12e29661e6a
children 71ba3cf3ec5e
rev   line source
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6c613c9f3a51 Stub for A&A Servlet Filter.
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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.Filter;
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6 import javax.servlet.FilterChain;
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7 import javax.servlet.FilterConfig;
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8 import javax.servlet.ServletException;
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9 import javax.servlet.ServletRequest;
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10 import javax.servlet.ServletResponse;
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6e4e4b96ca6c Removed superfluous imports.
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11
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12 import javax.servlet.http.HttpServletRequest;
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13 import javax.servlet.http.HttpServletResponse;
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14 import javax.servlet.http.HttpSession;
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15
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16 import org.apache.log4j.Logger;
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17
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18 import de.intevation.flys.client.server.auth.Authentication;
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19 import de.intevation.flys.client.server.auth.AuthenticationException;
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20 import de.intevation.flys.client.server.auth.AuthenticationFactory;
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c12e29661e6a Login: Cast session user to abstract type not WAS specific
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21 import de.intevation.flys.client.server.auth.User;
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22
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23
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24 /** ServletFilter used for GGInA authentification and certain authorisation. */
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25 public class GGInAFilter implements Filter {
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26
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27 /** Private logger. */
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28 private static Logger logger = Logger.getLogger(GGInAFilter.class);
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29
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30 private boolean deactivate = false;
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31 private String authmethod;
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32
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33
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34 /**
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35 * Initialize.
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36 *
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37 * Read FilterConfig parameter deactivate
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38 */
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39 @Override
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40 public void init(FilterConfig config)
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41 throws ServletException
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42 {
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43 String deactivate = config.getInitParameter("deactivate");
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44 this.authmethod = config.getServletContext().getInitParameter(
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45 "authentication");
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46 if (deactivate != null && deactivate.equalsIgnoreCase("true")) {
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47 this.deactivate = true;
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48 }
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49
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50 }
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51
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52
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53 /**
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54 * Called when filter in chain invoked.
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55 * @param req request to servlet
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56 * @param resp response of servlet
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57 * @param chain the filter chain
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58 */
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59 @Override
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60 public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
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61 throws IOException, ServletException
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62 {
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63 if (this.deactivate) {
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64 logger.debug("GGinAFilter is deactivated");
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65 chain.doFilter(req, resp);
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66 return;
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67 }
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68
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69 HttpServletRequest sreq = (HttpServletRequest) req;
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70
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71 String requesturi = sreq.getRequestURI();
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72
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73 logger.debug("Request for: " + requesturi);
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74
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75 // Allow access to login pages
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76 // TODO Maybe replace with Filter <url-pattern>
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77 if (requesturi.equals("/login.jsp") || requesturi.equals("/flys/login")
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78 || requesturi.equals("/FLYS.css")) {
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79 logger.debug("Request for login " + requesturi);
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80 chain.doFilter(req, resp);
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81 return;
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82 }
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83
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84 HttpSession session = sreq.getSession();
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85
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86 String uri = requesturi;
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87 if (sreq.getQueryString() != null) {
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88 uri = uri + "?" + sreq.getQueryString();
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89 }
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90 session.setAttribute("requesturi", uri);
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91
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92 User user = (User)session.getAttribute("user");
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93 if (user == null) {
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94 logger.debug("No user in session: " + requesturi);
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95 this.redirect(resp);
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96 return;
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97 }
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98 if (user.hasExpired()) {
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99 // try to re-authenticate the user
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100 logger.debug("User ticket has expired: " + requesturi);
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101 String encoding = sreq.getCharacterEncoding();
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102 try {
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103 Authentication auth = this.auth(user, encoding);
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104 if (auth == null || !auth.isSuccess()) {
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105 logger.debug("Re-athentication not successful");
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106 this.redirect(resp);
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107 }
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108 }
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109 catch(AuthenticationException e) {
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110 logger.error("Failure during re-authentication", e);
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111 this.redirect(resp);
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112 return;
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113 }
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114 }
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115
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116 logger.debug("GGInAFilter.doFilter");
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117 chain.doFilter(req, resp);
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118 return;
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119 }
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120
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121 private void redirect(ServletResponse resp) throws IOException {
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122 logger.debug("Redirect to login");
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123 ((HttpServletResponse) resp).sendRedirect("/login.jsp");
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124 }
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125
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126
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127 /**
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128 * Do nothing at destruction.
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129 */
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130 @Override
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131 public void destroy() {
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132 }
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133
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134 private Authentication auth(User user, String encoding)
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135 throws AuthenticationException, IOException {
8255247da645 Implement re-authentication if the user (ticket) has expired.
Bjoern Ricks <bjoern.ricks@intevation.de>
parents: 2964
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136 return AuthenticationFactory.getInstance(this.authmethod).auth(
8255247da645 Implement re-authentication if the user (ticket) has expired.
Bjoern Ricks <bjoern.ricks@intevation.de>
parents: 2964
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137 user.getName(), user.getPassword(), encoding);
8255247da645 Implement re-authentication if the user (ticket) has expired.
Bjoern Ricks <bjoern.ricks@intevation.de>
parents: 2964
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138 }
2889
6c613c9f3a51 Stub for A&A Servlet Filter.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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139 }
6c613c9f3a51 Stub for A&A Servlet Filter.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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140 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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