2 * Copyright (C) 2001, 2002 The Mir-coders group
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4 * This file is part of Mir.
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6 * Mir is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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11 * Mir is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with Mir; if not, write to the Free Software
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18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 * In addition, as a special exception, The Mir-coders gives permission to link
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21 * the code of this program with the com.oreilly.servlet library, any library
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22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
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23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
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24 * the above that use the same license as the above), and distribute linked
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25 * combinations including the two. You must obey the GNU General Public
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26 * License in all respects for all of the code used other than the above
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27 * mentioned libraries. If you modify this file, you may extend this exception
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28 * to your version of the file, but you are not obligated to do so. If you do
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29 * not wish to do so, delete this exception statement from your version.
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32 import java.io.IOException;
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33 import java.io.PrintWriter;
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34 import java.lang.reflect.Method;
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35 import java.util.GregorianCalendar;
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36 import java.util.HashMap;
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37 import java.util.Iterator;
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38 import java.util.List;
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39 import java.util.Locale;
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40 import java.util.Map;
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41 import java.util.Vector;
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43 import javax.servlet.ServletException;
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44 import javax.servlet.UnavailableException;
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45 import javax.servlet.http.HttpServletRequest;
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46 import javax.servlet.http.HttpServletResponse;
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47 import javax.servlet.http.HttpSession;
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49 import mir.config.MirPropertiesConfiguration;
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50 import mir.generator.FreemarkerGenerator;
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51 import mir.log.LoggerWrapper;
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52 import mir.misc.HTMLTemplateProcessor;
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53 import mir.misc.StringUtil;
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54 import mir.servlet.AbstractServlet;
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55 import mir.servlet.ServletModule;
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56 import mir.servlet.ServletModuleDispatch;
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57 import mir.servlet.ServletModuleExc;
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58 import mir.servlet.ServletModuleUserExc;
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59 import mir.util.StringRoutines;
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60 import mir.util.ExceptionFunctions;
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61 import mircoders.entity.EntityUsers;
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62 import mircoders.global.MirGlobal;
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63 import mircoders.module.ModuleMessage;
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64 import mircoders.module.ModuleUsers;
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65 import mircoders.storage.DatabaseArticleType;
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66 import mircoders.storage.DatabaseMessages;
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67 import mircoders.storage.DatabaseUsers;
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69 import org.apache.struts.util.MessageResources;
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71 import freemarker.template.SimpleHash;
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72 import freemarker.template.SimpleList;
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73 import freemarker.template.SimpleScalar;
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74 import freemarker.template.TemplateModel;
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79 * Mir.java - main servlet, that dispatches to servletmodules
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81 * @author $Author: zapata $
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82 * @version $Id: Mir.java,v 1.34 2003/03/07 00:50:22 zapata Exp $
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85 public class Mir extends AbstractServlet {
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86 private static ModuleUsers usersModule = null;
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87 private static ModuleMessage messageModule = null;
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88 private final static Map servletModuleInstanceHash = new HashMap();
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90 //I don't know about making this static cause it removes the
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91 //possibility to change the config on the fly.. -mh
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92 private static List loginLanguages = null;
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93 public HttpSession session;
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95 public void doGet(HttpServletRequest aRequest, HttpServletResponse aResponse)
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96 throws ServletException, IOException {
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97 doPost(aRequest, aResponse);
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100 protected TemplateModel getLoginLanguages() throws ServletException {
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101 synchronized (Mir.class) {
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103 if (loginLanguages == null) {
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104 MessageResources messageResources2 =
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105 MessageResources.getMessageResources("bundles.admin");
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106 MessageResources messageResources =
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107 MessageResources.getMessageResources("bundles.adminlocal");
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109 StringRoutines.splitString(MirGlobal.getConfigPropertyWithDefault(
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110 "Mir.Login.Languages", "en"), ";");
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112 loginLanguages = new Vector();
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114 Iterator i = languages.iterator();
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116 while (i.hasNext()) {
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117 String code = (String) i.next();
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118 Locale locale = new Locale(code, "");
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119 String name = messageResources.getMessage(locale, "languagename");
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121 if (name == null) {
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122 name = messageResources2.getMessage(locale, "languagename");
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125 if (name == null) {
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129 Map record = new HashMap();
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130 record.put("name", name);
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131 record.put("code", code);
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132 loginLanguages.add(record);
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136 return FreemarkerGenerator.makeAdapter(loginLanguages);
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138 catch (Throwable t) {
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139 throw new ServletException(t.getMessage());
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144 // FIXME: this should probalby go into AbstractServlet so it can be used in
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145 // OpenMir as well -mh
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146 protected String getDefaultLanguage(HttpServletRequest aRequest) {
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147 String defaultlanguage =
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148 MirGlobal.getConfigPropertyWithDefault("Mir.Login.DefaultLanguage", "");
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150 if (defaultlanguage.length() == 0) {
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151 Locale locale = aRequest.getLocale();
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152 defaultlanguage = locale.getLanguage();
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155 return defaultlanguage;
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158 public void doPost(HttpServletRequest aRequest, HttpServletResponse aResponse)
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159 throws ServletException, IOException, UnavailableException {
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160 long startTime = System.currentTimeMillis();
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161 long sessionConnectTime = 0;
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162 EntityUsers userEntity;
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165 if ((configuration.getString("RootUri") == null) ||
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166 configuration.getString("RootUri").equals("")) {
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167 configuration.setProperty("RootUri", aRequest.getContextPath());
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170 configuration.addProperty("ServletName", getServletName());
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173 // Log.info(this, "blalalala");
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174 session = aRequest.getSession(true);
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175 userEntity = (EntityUsers) session.getAttribute("login.uid");
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177 if (aRequest.getServerPort() == 443) {
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183 //make sure client browsers don't cache anything
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184 setNoCaching(aResponse);
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186 //FIXME: this seems kind of hackish and only here because we can have
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187 // default other than the one that the browser is set to.
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188 Locale locale = new Locale(getDefaultLanguage(aRequest), "");
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189 MessageResources messageResources =
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190 MessageResources.getMessageResources("bundles.admin");
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191 String htmlcharset = messageResources.getMessage(locale, "htmlcharset");
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193 aResponse.setContentType("text/html; charset=" + htmlcharset);
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195 String moduleName = aRequest.getParameter("module");
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196 checkLanguage(session, aRequest);
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198 /** @todo for cleanup and readability this should be moved to
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199 * method loginIfNecessary() */
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200 if ((moduleName != null) && moduleName.equals("direct")) {
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205 if (((moduleName != null) && moduleName.equals("login")) ||
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206 (userEntity == null)) {
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207 String user = aRequest.getParameter("login");
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208 String passwd = aRequest.getParameter("password");
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209 logger.debug("--login: evaluating for user: " + user);
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210 userEntity = allowedUser(user, passwd);
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212 if (userEntity == null) {
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213 // login failed: redirecting to login
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214 logger.warn("--login: failed!");
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215 _sendLoginPage(aResponse, aRequest, aResponse.getWriter());
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218 } else if ((moduleName != null) && moduleName.equals("login")) {
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219 // login successful
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220 logger.info("--login: successful! setting uid: " + userEntity.getId());
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221 session.setAttribute("login.uid", userEntity);
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222 logger.debug("--login: trying to retrieve login.target");
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224 String target = (String) session.getAttribute("login.target");
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226 if (target != null) {
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227 logger.debug("Redirect: " + target);
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229 int serverPort = aRequest.getServerPort();
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230 String redirect = "";
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231 String redirectString = "";
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233 if (serverPort == 80) {
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235 aResponse.encodeURL(http + "://" + aRequest.getServerName() + target);
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237 "<html><head><meta http-equiv=refresh content=\"1;URL=" +
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238 redirect + "\"></head><body>going <a href=\"" + redirect +
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239 "\">Mir</a></body></html>";
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242 aResponse.encodeURL(http + "://" + aRequest.getServerName() + ":" +
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243 aRequest.getServerPort() + target);
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245 "<html><head><meta http-equiv=refresh content=\"1;URL=" +
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246 redirect + "\"></head><body>going <a href=\"" + redirect +
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247 "\">Mir</a></body></html>";
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250 aResponse.getWriter().println(redirectString);
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252 //aResponse.sendRedirect(redirect);
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254 // redirecting to default target
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255 logger.debug("--login: no target - redirecting to default");
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256 _sendStartPage(aResponse, aRequest, aResponse.getWriter(), userEntity);
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261 // if login succesful
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265 if ((moduleName != null) && moduleName.equals("logout")) {
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266 logger.info("--logout");
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267 session.invalidate();
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269 //session = aRequest.getSession(true);
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270 //checkLanguage(session, aRequest);
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271 _sendLoginPage(aResponse, aRequest, aResponse.getWriter());
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276 // Check if authed!
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277 if (userEntity == null) {
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278 // redirect to loginpage
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279 String redirectString = aRequest.getRequestURI();
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280 String queryString = aRequest.getQueryString();
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282 if ((queryString != null) && !queryString.equals("")) {
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283 redirectString += ("?" + aRequest.getQueryString());
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284 logger.debug("STORING: " + redirectString);
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285 session.setAttribute("login.target", redirectString);
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288 _sendLoginPage(aResponse, aRequest, aResponse.getWriter());
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293 // If no module is specified goto standard startpage
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294 if ((moduleName == null) || moduleName.equals("")) {
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295 logger.debug("no module: redirect to standardpage");
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296 _sendStartPage(aResponse, aRequest, aResponse.getWriter(), userEntity);
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302 // From now on regular dispatching...
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304 // get servletmodule by parameter and continue with dispacher
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305 ServletModule smod = getServletModuleForName(moduleName);
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306 ServletModuleDispatch.dispatch(smod, aRequest, aResponse);
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308 catch (Throwable e) {
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309 Throwable cause = ExceptionFunctions.traceCauseException(e);
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311 if (cause instanceof ServletModuleUserExc)
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312 handleUserError(aRequest, aResponse, aResponse.getWriter(), (ServletModuleUserExc) cause);
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314 handleError(aRequest, aResponse, aResponse.getWriter(), cause);
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319 sessionConnectTime = System.currentTimeMillis() - startTime;
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320 logger.info("EXECTIME (" + moduleName + "): " + sessionConnectTime + " ms");
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324 * Private method getServletModuleForName returns ServletModule
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327 * @param moduleName
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328 * @return ServletModule
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331 private static ServletModule getServletModuleForName(String moduleName) throws ServletModuleExc {
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332 // Instance in Map ?
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333 if (!servletModuleInstanceHash.containsKey(moduleName)) {
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334 // was not found in hash...
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336 Class theServletModuleClass = null;
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339 // first we try to get ServletModule from stern.che3.servlet
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340 theServletModuleClass =
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341 Class.forName("mircoders.servlet.ServletModule" + moduleName);
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342 } catch (ClassNotFoundException e) {
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343 // on failure, we try to get it from lib-layer
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344 theServletModuleClass =
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345 Class.forName("mir.servlet.ServletModule" + moduleName);
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348 Method m = theServletModuleClass.getMethod("getInstance", null);
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349 ServletModule smod = (ServletModule) m.invoke(null, null);
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351 // we put it into map for further reference
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352 servletModuleInstanceHash.put(moduleName, smod);
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356 catch (Exception e) {
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357 throw new ServletModuleExc("*** error resolving classname for " + moduleName + " -- " + e.getMessage());
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360 return (ServletModule) servletModuleInstanceHash.get(moduleName);
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364 private void handleUserError(HttpServletRequest aRequest, HttpServletResponse aResponse,
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365 PrintWriter out, Throwable anException) {
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367 logger.info("user error: " + anException.getMessage());
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368 SimpleHash modelRoot = new SimpleHash();
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369 modelRoot.put("errorstring", new SimpleScalar(anException.getMessage()));
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370 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
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371 HTMLTemplateProcessor.process(aResponse,MirPropertiesConfiguration.instance().getString("Mir.UserErrorTemplate"),
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372 modelRoot, out, aRequest.getLocale() );
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375 catch (Exception e) {
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376 logger.error("Error in UserErrorTemplate");
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381 private void handleError(HttpServletRequest aRequest, HttpServletResponse aResponse,PrintWriter out, Throwable anException) {
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384 logger.error("error: " + anException);
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385 SimpleHash modelRoot = new SimpleHash();
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386 modelRoot.put("errorstring", new SimpleScalar(anException.getMessage()));
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387 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(
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388 new GregorianCalendar())));
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389 HTMLTemplateProcessor.process(aResponse,MirPropertiesConfiguration.instance().getString("Mir.ErrorTemplate"),
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390 modelRoot,out, aRequest.getLocale());
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393 catch (Exception e) {
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394 logger.error("Error in ErrorTemplate");
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399 * evaluate login for user / password
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401 protected EntityUsers allowedUser(String user, String password) {
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403 if (usersModule == null) {
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404 usersModule = new ModuleUsers(DatabaseUsers.getInstance());
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407 return usersModule.getUserForLogin(user, password);
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408 } catch (Exception e) {
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409 logger.debug(e.getMessage());
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410 e.printStackTrace();
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416 // Redirect-methods
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417 private void _sendLoginPage(HttpServletResponse aResponse, HttpServletRequest aRequest,
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419 String loginTemplate = configuration.getString("Mir.LoginTemplate");
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420 String sessionUrl = aResponse.encodeURL("");
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423 SimpleHash mergeData = new SimpleHash();
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424 SimpleList languages = new SimpleList();
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426 mergeData.put("session", sessionUrl);
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428 mergeData.put("defaultlanguage", getDefaultLanguage(aRequest));
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429 mergeData.put("languages", getLoginLanguages());
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431 HTMLTemplateProcessor.process(aResponse, loginTemplate, mergeData, out,
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432 getLocale(aRequest));
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434 catch (Throwable e) {
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435 handleError(aRequest, aResponse, out, e);
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439 private void _sendStartPage(HttpServletResponse aResponse, HttpServletRequest aRequest,
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440 PrintWriter out, EntityUsers userEntity) {
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441 String startTemplate = "templates/admin/start_admin.template";
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442 String sessionUrl = aResponse.encodeURL("");
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445 // merge with logged in user and messages
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446 SimpleHash mergeData = new SimpleHash();
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447 mergeData.put("session", sessionUrl);
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448 mergeData.put("login_user", userEntity);
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450 if (messageModule == null) {
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451 messageModule = new ModuleMessage(DatabaseMessages.getInstance());
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454 mergeData.put("messages",
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455 messageModule.getByWhereClause(null, "webdb_create desc", 0, 10));
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457 mergeData.put("articletypes",
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458 DatabaseArticleType.getInstance().selectByWhereClause("", "id", 0, 20));
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460 HTMLTemplateProcessor.process(aResponse, startTemplate, mergeData, out,
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461 getLocale(aRequest));
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463 catch (Exception e) {
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464 e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
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465 handleError(aRequest, aResponse, out, e);
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469 public String getServletInfo() {
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470 return "Mir " + configuration.getString("Mir.Version");
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473 private void checkLanguage(HttpSession session, HttpServletRequest aRequest) {
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474 // a lang parameter always sets the language
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475 String lang = aRequest.getParameter("language");
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477 if (lang != null) {
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478 logger.info("selected language " + lang + " overrides accept-language");
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479 setLanguage(session, lang);
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480 setLocale(session, new Locale(lang, ""));
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482 // otherwise store language from accept header in session
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483 else if (session.getAttribute("Language") == null) {
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484 logger.info("accept-language is " + aRequest.getLocale().getLanguage());
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485 setLanguage(session, aRequest.getLocale().getLanguage());
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486 setLocale(session, aRequest.getLocale());
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