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annotate flys-client/src/main/java/de/intevation/flys/client/server/filter/GGInAFilter.java @ 4436:9fca4d60fb7c

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Reintroduce wrongly outbacked changes (rev 4418-4425).
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 07 Nov 2012 13:49:32 +0100
parents
children 9a2432485371
rev   line source
4436
9fca4d60fb7c Reintroduce wrongly outbacked changes (rev 4418-4425).
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1 package de.intevation.flys.client.server.filter;
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2
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3 import de.intevation.flys.client.server.auth.Authentication;
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4 import de.intevation.flys.client.server.auth.AuthenticationException;
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5 import de.intevation.flys.client.server.auth.AuthenticationFactory;
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6 import de.intevation.flys.client.server.auth.User;
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7 import de.intevation.flys.client.server.features.Features;
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8
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9 import java.io.IOException;
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10 import java.util.Enumeration;
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11
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12 import javax.servlet.Filter;
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13 import javax.servlet.FilterChain;
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14 import javax.servlet.FilterConfig;
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15 import javax.servlet.ServletContext;
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16 import javax.servlet.ServletException;
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17 import javax.servlet.ServletRequest;
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18 import javax.servlet.ServletResponse;
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19 import javax.servlet.http.HttpServletRequest;
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20 import javax.servlet.http.HttpServletResponse;
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21 import javax.servlet.http.HttpSession;
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22
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23 import org.apache.log4j.Logger;
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24
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25
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26 /** ServletFilter used for GGInA authentification and certain authorisation. */
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27 public class GGInAFilter implements Filter {
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28
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29 /** Private logger. */
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30 private static Logger logger = Logger.getLogger(GGInAFilter.class);
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31
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32 private boolean deactivate = false;
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33 private String authmethod;
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34 private String redirecturl;
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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 public static final String MAP_PRINT = "/flys/map-print";
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41 public static final String MAPFISH_PRINT = "/flys/mapfish-print/print.pdf";
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42
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43
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44 /**
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45 * Initialize.
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46 *
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47 * Read FilterConfig parameter deactivate
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48 */
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49 @Override
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50 public void init(FilterConfig config)
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51 throws ServletException
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52 {
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53 String deactivate = config.getInitParameter("deactivate");
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54 this.sc = config.getServletContext();
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55 logger.debug("GGInAFilter context " + this.sc.getContextPath());
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56 this.authmethod = sc.getInitParameter("authentication");
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57 this.redirecturl = sc.getInitParameter("redirect-url");
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58 if (deactivate != null && deactivate.equalsIgnoreCase("true")) {
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59 this.deactivate = true;
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60 }
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61
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62 }
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63
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64
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65 /**
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66 * Called when filter in chain invoked.
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67 * @param req request to servlet
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68 * @param resp response of servlet
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69 * @param chain the filter chain
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70 */
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71 @Override
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72 public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
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73 throws IOException, ServletException
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74 {
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75 if (this.deactivate) {
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76 logger.debug("GGinAFilter is deactivated");
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77 chain.doFilter(req, resp);
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78 return;
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79 }
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80
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81 HttpServletRequest sreq = (HttpServletRequest) req;
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82
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83 String requesturi = sreq.getRequestURI();
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84 for (Enumeration e = req.getAttributeNames() ; e.hasMoreElements() ;) {
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85 logger.debug(e.nextElement());
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86 }
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87
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88 logger.debug("Request for: " + requesturi);
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89
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90 // Allow access to login pages
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91 // TODO Maybe replace with Filter <url-pattern>
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92 String path = this.sc.getContextPath();
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93 if (requesturi.equals(path + LOGIN_JSP)
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94 || requesturi.equals(path + LOGIN_SERVLET)
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95 || requesturi.equals(path + FLYS_CSS)
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96 || requesturi.equals(path + MAP_PRINT)
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97 || requesturi.equals(path + MAPFISH_PRINT)) {
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98 logger.debug("Request for login " + requesturi);
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99 chain.doFilter(req, resp);
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100 return;
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101 }
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102
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103 boolean redirect = false;
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104
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105 HttpSession session = sreq.getSession();
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106
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107 String uri = path + "/" + this.redirecturl;
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108
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109 /* Redirect if uri is root or redirecturl */
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110 if (requesturi.equals(uri) || requesturi.equals(path + "/")) {
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111 redirect = true;
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112 }
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113
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114 if (sreq.getQueryString() != null) {
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115 uri = uri + "?" + sreq.getQueryString();
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116 }
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117 session.setAttribute("requesturi", uri);
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118
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119 User user = (User)session.getAttribute("user");
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120 if (user == null) {
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121 logger.debug("No user in session: " + requesturi);
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122 this.handleResponse(resp, redirect);
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123 return;
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124 }
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125 if (user.hasExpired()) {
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126 // try to re-authenticate the user
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127 logger.debug("User ticket has expired: " + requesturi);
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128 String encoding = sreq.getCharacterEncoding();
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129 try {
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130 Authentication auth = this.auth(user, encoding);
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131 if (auth == null || !auth.isSuccess()) {
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132 logger.debug("Re-athentication not successful");
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133 this.handleResponse(resp, redirect);
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134 }
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135 }
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136 catch(AuthenticationException e) {
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137 logger.error("Failure during re-authentication", e);
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138 this.handleResponse(resp, redirect);
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139 return;
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140 }
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141 }
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142
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143 chain.doFilter(req, resp);
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144 return;
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145 }
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146
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147 private void redirect(ServletResponse resp) throws IOException {
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148 logger.debug("Redirect to login");
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149 ((HttpServletResponse) resp).sendRedirect(this.sc.getContextPath() +
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150 "/login.jsp");
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151 }
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152
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153 private void sendNotAuthenticated(ServletResponse resp) throws IOException {
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154 logger.debug("Send not authenticated");
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155 ((HttpServletResponse)resp).sendError(HttpServletResponse.SC_FORBIDDEN, "User not authenticated");
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156 }
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157
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158 private void handleResponse(ServletResponse resp, boolean redirect) throws IOException {
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159 if (redirect) {
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160 this.redirect(resp);
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161 }
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162 else {
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163 this.sendNotAuthenticated(resp);
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164 }
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165 }
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166
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167
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168 /**
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169 * Do nothing at destruction.
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170 */
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171 @Override
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172 public void destroy() {
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173 }
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174
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175 private Authentication auth(User user, String encoding)
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176 throws AuthenticationException, IOException {
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177 Features features = (Features)sc.getAttribute(Features.CONTEXT_ATTRIBUTE);
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178 return AuthenticationFactory.getInstance(this.authmethod).auth(
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179 user.getName(), user.getPassword(), encoding, features);
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180 }
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181 }
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182 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org