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annotate flys-client/src/main/java/de/intevation/flys/client/server/GGInAFilter.java @ 3851:a4c9296f6efa

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Use the Context PATH servlet variable when using URLs in the GGInAFilter flys-client/trunk@5591 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Mon, 24 Sep 2012 13:04:53 +0000
parents 71ba3cf3ec5e
children 17fe00c09b7c
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 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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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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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 public static final String LOGIN_JSP = "/login.jsp";
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38 public static final String LOGIN_SERVLET = "/flys/login";
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39 public static final String FLYS_CSS = "/FLYS.css";
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40
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41
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42 /**
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43 * Initialize.
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44 *
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45 * Read FilterConfig parameter deactivate
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46 */
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47 @Override
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48 public void init(FilterConfig config)
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49 throws ServletException
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50 {
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51 String deactivate = config.getInitParameter("deactivate");
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52 this.sc = config.getServletContext();
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53 logger.debug("GGInAFilter context " + this.sc.getContextPath());
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54 this.authmethod = sc.getInitParameter("authentication");
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55 if (deactivate != null && deactivate.equalsIgnoreCase("true")) {
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56 this.deactivate = true;
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57 }
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58
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59 }
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60
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61
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62 /**
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63 * Called when filter in chain invoked.
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64 * @param req request to servlet
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65 * @param resp response of servlet
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66 * @param chain the filter chain
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67 */
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68 @Override
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69 public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
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70 throws IOException, ServletException
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71 {
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72 if (this.deactivate) {
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73 logger.debug("GGinAFilter is deactivated");
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74 chain.doFilter(req, resp);
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75 return;
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76 }
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77
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78 HttpServletRequest sreq = (HttpServletRequest) req;
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79
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80 String requesturi = sreq.getRequestURI();
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81 for (Enumeration e = req.getAttributeNames() ; e.hasMoreElements() ;) {
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82 logger.debug(e.nextElement());
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83 }
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84
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85 logger.debug("Request for: " + requesturi);
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86
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87 // Allow access to login pages
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88 // TODO Maybe replace with Filter <url-pattern>
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89 String path = this.sc.getContextPath();
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90 if (requesturi.equals(path + "/login.jsp") ||
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91 requesturi.equals(path + "/flys/login")
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92 || requesturi.equals(path + "/FLYS.css")) {
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93 logger.debug("Request for login " + requesturi);
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94 chain.doFilter(req, resp);
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95 return;
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96 }
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97
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98 HttpSession session = sreq.getSession();
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99
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100 String uri = requesturi;
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101 if (sreq.getQueryString() != null) {
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102 uri = uri + "?" + sreq.getQueryString();
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103 }
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104 session.setAttribute("requesturi", uri);
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105
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106 User user = (User)session.getAttribute("user");
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107 if (user == null) {
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108 logger.debug("No user in session: " + requesturi);
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109 this.redirect(resp);
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110 return;
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111 }
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112 if (user.hasExpired()) {
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113 // try to re-authenticate the user
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114 logger.debug("User ticket has expired: " + requesturi);
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115 String encoding = sreq.getCharacterEncoding();
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116 try {
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117 Authentication auth = this.auth(user, encoding);
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118 if (auth == null || !auth.isSuccess()) {
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119 logger.debug("Re-athentication not successful");
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120 this.redirect(resp);
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121 }
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122 }
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123 catch(AuthenticationException e) {
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124 logger.error("Failure during re-authentication", e);
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125 this.redirect(resp);
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126 return;
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127 }
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128 }
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129
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130 logger.debug("GGInAFilter.doFilter");
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131 chain.doFilter(req, resp);
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132 return;
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133 }
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134
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135 private void redirect(ServletResponse resp) throws IOException {
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136 logger.debug("Redirect to login");
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137 ((HttpServletResponse) resp).sendRedirect(this.sc.getContextPath() +
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138 "/login.jsp");
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139 }
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140
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141
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142 /**
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143 * Do nothing at destruction.
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144 */
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145 @Override
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146 public void destroy() {
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147 }
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148
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149 private Authentication auth(User user, String encoding)
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150 throws AuthenticationException, IOException {
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151 Features features = (Features)sc.getAttribute(Features.CONTEXT_ATTRIBUTE);
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152 return AuthenticationFactory.getInstance(this.authmethod).auth(
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153 user.getName(), user.getPassword(), encoding, features);
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154 }
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155 }
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156 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org