Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/GGInAFilter.java @ 3485:71ba3cf3ec5e

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Refactor Authentication to allow to pass the Freatures to the user class The Features class can be used to receive the allowed features for the users roles. flys-client/trunk@5183 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Fri, 10 Aug 2012 07:06:18 +0000
parents 8255247da645
children a4c9296f6efa
rev   line source
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6c613c9f3a51 Stub for A&A Servlet Filter.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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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 import java.util.Enumeration;
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5
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6 import javax.servlet.Filter;
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7 import javax.servlet.FilterChain;
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8 import javax.servlet.FilterConfig;
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9 import javax.servlet.ServletContext;
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10 import javax.servlet.ServletException;
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11 import javax.servlet.ServletRequest;
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12 import javax.servlet.ServletResponse;
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6e4e4b96ca6c Removed superfluous imports.
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13
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14 import javax.servlet.http.HttpServletRequest;
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15 import javax.servlet.http.HttpServletResponse;
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16 import javax.servlet.http.HttpSession;
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17
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18 import org.apache.log4j.Logger;
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19
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20 import de.intevation.flys.client.server.auth.Authentication;
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21 import de.intevation.flys.client.server.auth.AuthenticationException;
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22 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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23 import de.intevation.flys.client.server.auth.User;
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24 import de.intevation.flys.client.server.features.Features;
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25
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26
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27 /** ServletFilter used for GGInA authentification and certain authorisation. */
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28 public class GGInAFilter implements Filter {
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29
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30 /** Private logger. */
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31 private static Logger logger = Logger.getLogger(GGInAFilter.class);
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32
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33 private boolean deactivate = false;
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34 private String authmethod;
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35 private ServletContext sc;
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36
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37
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38 /**
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39 * Initialize.
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40 *
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41 * Read FilterConfig parameter deactivate
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42 */
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43 @Override
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44 public void init(FilterConfig config)
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45 throws ServletException
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46 {
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47 String deactivate = config.getInitParameter("deactivate");
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48 this.sc = config.getServletContext();
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49 this.authmethod = sc.getInitParameter("authentication");
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50 if (deactivate != null && deactivate.equalsIgnoreCase("true")) {
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51 this.deactivate = true;
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52 }
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53
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54 }
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55
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56
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57 /**
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58 * Called when filter in chain invoked.
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59 * @param req request to servlet
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60 * @param resp response of servlet
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61 * @param chain the filter chain
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62 */
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63 @Override
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64 public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
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65 throws IOException, ServletException
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66 {
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67 if (this.deactivate) {
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68 logger.debug("GGinAFilter is deactivated");
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69 chain.doFilter(req, resp);
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70 return;
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71 }
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72
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73 HttpServletRequest sreq = (HttpServletRequest) req;
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74
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75 String requesturi = sreq.getRequestURI();
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76 for (Enumeration e = req.getAttributeNames() ; e.hasMoreElements() ;) {
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77 logger.debug(e.nextElement());
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78 }
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79
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80 logger.debug("Request for: " + requesturi);
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81
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82 // Allow access to login pages
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83 // TODO Maybe replace with Filter <url-pattern>
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84 if (requesturi.equals("/login.jsp") || requesturi.equals("/flys/login")
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85 || requesturi.equals("/FLYS.css")) {
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86 logger.debug("Request for login " + requesturi);
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87 chain.doFilter(req, resp);
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88 return;
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89 }
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90
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91 HttpSession session = sreq.getSession();
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92
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93 String uri = requesturi;
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94 if (sreq.getQueryString() != null) {
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95 uri = uri + "?" + sreq.getQueryString();
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96 }
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97 session.setAttribute("requesturi", uri);
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98
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99 User user = (User)session.getAttribute("user");
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100 if (user == null) {
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101 logger.debug("No user in session: " + requesturi);
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102 this.redirect(resp);
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103 return;
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104 }
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105 if (user.hasExpired()) {
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106 // try to re-authenticate the user
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107 logger.debug("User ticket has expired: " + requesturi);
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108 String encoding = sreq.getCharacterEncoding();
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109 try {
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110 Authentication auth = this.auth(user, encoding);
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111 if (auth == null || !auth.isSuccess()) {
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112 logger.debug("Re-athentication not successful");
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113 this.redirect(resp);
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114 }
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115 }
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116 catch(AuthenticationException e) {
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117 logger.error("Failure during re-authentication", e);
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118 this.redirect(resp);
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119 return;
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120 }
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121 }
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122
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123 logger.debug("GGInAFilter.doFilter");
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124 chain.doFilter(req, resp);
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125 return;
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126 }
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127
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128 private void redirect(ServletResponse resp) throws IOException {
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129 logger.debug("Redirect to login");
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130 ((HttpServletResponse) resp).sendRedirect("/login.jsp");
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131 }
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132
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133
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134 /**
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135 * Do nothing at destruction.
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136 */
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137 @Override
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138 public void destroy() {
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139 }
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140
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141 private Authentication auth(User user, String encoding)
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142 throws AuthenticationException, IOException {
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143 Features features = (Features)sc.getAttribute(Features.CONTEXT_ATTRIBUTE);
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144 return AuthenticationFactory.getInstance(this.authmethod).auth(
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145 user.getName(), user.getPassword(), encoding, features);
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146 }
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147 }
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148 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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