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annotate flys-client/src/main/java/de/intevation/flys/client/server/filter/GGInAFilter.java @ 4488:5041105d2edd

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Check if response code from GGInA is 200 OK Only parse the GGInA response if the status code is 200 OK. This improves the error message if GGInA is not available and shows the real reason instead of a JDOM error while parsing the response.
author Björn Ricks <bjoern.ricks@intevation.de>
date Wed, 14 Nov 2012 10:36:21 +0100
parents 9fca4d60fb7c
children 9a2432485371
rev   line source
4436
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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