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.misc.HTMLTemplateProcessor;
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52 import mir.misc.StringUtil;
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53 import mir.servlet.AbstractServlet;
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54 import mir.servlet.ServletModule;
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55 import mir.servlet.ServletModuleDispatch;
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56 import mir.servlet.ServletModuleException;
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57 import mir.servlet.ServletModuleUserException;
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58 import mir.util.StringRoutines;
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59 import mircoders.entity.EntityUsers;
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60 import mircoders.global.MirGlobal;
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61 import mircoders.module.ModuleMessage;
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62 import mircoders.module.ModuleUsers;
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63 import mircoders.storage.DatabaseArticleType;
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64 import mircoders.storage.DatabaseMessages;
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65 import mircoders.storage.DatabaseUsers;
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67 import org.apache.struts.util.MessageResources;
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69 import freemarker.template.SimpleHash;
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70 import freemarker.template.SimpleList;
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71 import freemarker.template.SimpleScalar;
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72 import freemarker.template.TemplateModel;
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75 * Mir.java - main servlet, that dispatches to servletmodules
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77 * @author $Author: idfx $
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78 * @version $Id: Mir.java,v 1.27 2003/01/25 17:50:34 idfx Exp $
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82 public class Mir extends AbstractServlet {
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84 private static ModuleUsers usersModule = null;
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85 private static ModuleMessage messageModule = null;
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86 private final static HashMap servletModuleInstanceHash = new HashMap();
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88 //I don't know about making this static cause it removes the
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89 //possibility to change the config on the fly.. -mh
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90 private static List loginLanguages = null;
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92 public HttpSession session;
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96 public void doGet(HttpServletRequest req, HttpServletResponse res) throws
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97 ServletException, IOException {
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101 protected TemplateModel getLoginLanguages() throws ServletException {
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102 synchronized (Mir.class) {
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105 if (loginLanguages == null) {
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106 MessageResources messageResources2 = MessageResources.
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107 getMessageResources("bundles.admin");
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108 MessageResources messageResources = MessageResources.
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109 getMessageResources("bundles.adminlocal");
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110 List languages = StringRoutines.splitString(MirGlobal.
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111 getConfigPropertyWithDefault("Mir.Login.Languages", "en"), ";");
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113 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 name = messageResources2.getMessage(locale, "languagename");
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125 Map record = new HashMap();
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126 record.put("name", name);
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127 record.put("code", code);
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128 loginLanguages.add(record);
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132 return FreemarkerGenerator.makeAdapter(loginLanguages);
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134 catch (Throwable t) {
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135 throw new ServletException(t.getMessage());
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140 // FIXME: this should probalby go into AbstractServlet so it can be used in
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141 // OpenMir as well -mh
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142 protected String getDefaultLanguage (HttpServletRequest req) {
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143 String defaultlanguage = MirGlobal.getConfigPropertyWithDefault("Mir.Login.DefaultLanguage", "");
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144 if (defaultlanguage.length() == 0) {
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145 Locale locale = req.getLocale();
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146 defaultlanguage = locale.getLanguage();
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149 return defaultlanguage;
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152 public void doPost(HttpServletRequest req, HttpServletResponse res) throws
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153 ServletException, IOException, UnavailableException {
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155 long startTime = System.currentTimeMillis();
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156 long sessionConnectTime = 0;
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157 EntityUsers userEntity;
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160 configuration.addProperty("ServletName",getServletName());
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163 // Log.info(this, "blalalala");
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165 session = req.getSession(true);
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166 userEntity = (EntityUsers) session.getAttribute("login.uid");
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168 if (req.getServerPort() == 443)
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174 //make sure client browsers don't cache anything
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177 //FIXME: this seems kind of hackish and only here because we can have
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178 // default other than the one that the browser is set to.
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179 Locale locale = new Locale(getDefaultLanguage(req), "");
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180 MessageResources messageResources = MessageResources.getMessageResources("bundles.admin");
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181 String htmlcharset = messageResources.getMessage(locale, "htmlcharset");
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183 res.setContentType("text/html; charset=" + htmlcharset);
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185 String moduleName = req.getParameter("module");
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186 checkLanguage(session, req);
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188 /** @todo for cleanup and readability this should be moved to
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189 * method loginIfNecessary() */
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191 if (moduleName != null && moduleName.equals("direct")) {
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196 if ( (moduleName != null && moduleName.equals("login")) || (userEntity == null)) {
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197 String user = req.getParameter("login");
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198 String passwd = req.getParameter("password");
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199 logger.debug("--login: evaluating for user: " + user);
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200 userEntity = allowedUser(user, passwd);
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201 if (userEntity == null) {
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202 // login failed: redirecting to login
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203 logger.warn("--login: failed!");
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204 _sendLoginPage(res, req, res.getWriter());
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207 else if (moduleName != null && moduleName.equals("login")) {
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208 // login successful
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210 logger.info("--login: successful! setting uid: " +
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211 userEntity.getId());
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212 session.setAttribute("login.uid", userEntity);
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213 logger.debug("--login: trying to retrieve login.target");
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214 String target = (String) session.getAttribute("login.target");
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216 if (target != null) {
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217 logger.debug("Redirect: " + target);
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218 int serverPort = req.getServerPort();
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219 String redirect = "";
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220 String redirectString = "";
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222 if (serverPort == 80) {
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223 redirect = res.encodeURL(http + "://" + req.getServerName() +
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226 "<html><head><meta http-equiv=refresh content=\"1;URL="
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228 + "\"></head><body>going <a href=\"" + redirect +
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229 "\">Mir</a></body></html>";
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232 redirect = res.encodeURL(http + "://" + req.getServerName() + ":" +
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233 req.getServerPort() + target);
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235 "<html><head><meta http-equiv=refresh content=\"1;URL="
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237 + "\"></head><body>going <a href=\"" + redirect +
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238 "\">Mir</a></body></html>";
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240 res.getWriter().println(redirectString);
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242 //res.sendRedirect(redirect);
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246 // redirecting to default target
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247 logger.debug("--login: no target - redirecting to default");
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248 _sendStartPage(res, req, res.getWriter(), userEntity);
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251 } // if login succesful
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254 if (moduleName != null && moduleName.equals("logout")) {
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255 logger.info("--logout");
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256 session.invalidate();
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258 //session = req.getSession(true);
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259 //checkLanguage(session, req);
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260 _sendLoginPage(res, req, res.getWriter());
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264 // Check if authed!
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265 if (userEntity == null) {
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266 // redirect to loginpage
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267 String redirectString = req.getRequestURI();
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268 String queryString = req.getQueryString();
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269 if (queryString != null && !queryString.equals("")) {
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270 redirectString += "?" + req.getQueryString();
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271 logger.debug("STORING: " + redirectString);
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272 session.setAttribute("login.target", redirectString);
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274 _sendLoginPage(res, req, res.getWriter());
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278 // If no module is specified goto standard startpage
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279 if (moduleName == null || moduleName.equals("")) {
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280 logger.debug("no module: redirect to standardpage");
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281 _sendStartPage(res, req, res.getWriter(), userEntity);
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286 // From now on regular dispatching...
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288 // get servletmodule by parameter and continue with dispacher
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289 ServletModule smod = getServletModuleForName(moduleName);
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290 ServletModuleDispatch.dispatch(smod, req, res);
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292 catch (ServletModuleException e) {
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293 handleError(req, res, res.getWriter(),
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294 "ServletException in Module " + moduleName + " -- " +
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297 catch (ServletModuleUserException e) {
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298 handleUserError(req, res, res.getWriter(), e.getMessage());
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302 sessionConnectTime = System.currentTimeMillis() - startTime;
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303 logger.info("EXECTIME (" + moduleName + "): " + sessionConnectTime +
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308 * Private method getServletModuleForName returns ServletModule
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311 * @param moduleName
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312 * @return ServletModule
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315 private static ServletModule getServletModuleForName(String moduleName) throws
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316 ServletModuleException {
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318 // Instance in Map ?
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319 if (!servletModuleInstanceHash.containsKey(moduleName)) {
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320 // was not found in hash...
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322 Class theServletModuleClass = null;
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324 // first we try to get ServletModule from stern.che3.servlet
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325 theServletModuleClass = Class.forName(
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326 "mircoders.servlet.ServletModule" + moduleName);
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328 catch (ClassNotFoundException e) {
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329 // on failure, we try to get it from lib-layer
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330 theServletModuleClass = Class.forName("mir.servlet.ServletModule" +
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333 Method m = theServletModuleClass.getMethod("getInstance", null);
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334 ServletModule smod = (ServletModule) m.invoke(null, null);
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335 // we put it into map for further reference
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336 servletModuleInstanceHash.put(moduleName, smod);
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339 catch (Exception e) {
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340 throw new ServletModuleException("*** error resolving classname for " +
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341 moduleName + " -- " + e.getMessage());
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345 return (ServletModule) servletModuleInstanceHash.get(moduleName);
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348 private void handleError(HttpServletRequest req, HttpServletResponse res,
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349 PrintWriter out, String errorString) {
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352 logger.error(errorString);
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353 SimpleHash modelRoot = new SimpleHash();
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354 modelRoot.put("errorstring", new SimpleScalar(errorString));
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355 modelRoot.put("date",
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356 new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
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357 HTMLTemplateProcessor.process(res, MirPropertiesConfiguration.instance().getString("Mir.ErrorTemplate"),
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358 modelRoot, out, getLocale(req));
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361 catch (Exception e) {
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362 e.printStackTrace(System.out);
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363 System.err.println("Error in ErrorTemplate: " + e.getMessage());
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367 private void handleUserError(HttpServletRequest req, HttpServletResponse res,
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368 PrintWriter out, String errorString) {
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370 logger.error(errorString);
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371 SimpleHash modelRoot = new SimpleHash();
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372 modelRoot.put("errorstring", new SimpleScalar(errorString));
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373 modelRoot.put("date",
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374 new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
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375 HTMLTemplateProcessor.process(res,
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376 MirPropertiesConfiguration.instance().getString("Mir.UserErrorTemplate"),
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377 modelRoot, out, getLocale(req));
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380 catch (Exception e) {
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381 System.err.println("Error in UserErrorTemplate");
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387 * evaluate login for user / password
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389 protected EntityUsers allowedUser(String user, String password) {
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391 if (usersModule == null)
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392 usersModule = new ModuleUsers(DatabaseUsers.getInstance());
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393 return usersModule.getUserForLogin(user, password);
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395 catch (Exception e) {
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396 logger.debug(e.getMessage());
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397 e.printStackTrace();
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402 // Redirect-methods
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403 private void _sendLoginPage(HttpServletResponse res, HttpServletRequest req,
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405 String loginTemplate =
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406 configuration.getString("Mir.LoginTemplate");
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407 String sessionUrl = res.encodeURL("");
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410 SimpleHash mergeData = new SimpleHash();
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411 SimpleList languages = new SimpleList();
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413 mergeData.put("session", sessionUrl);
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415 mergeData.put("defaultlanguage", getDefaultLanguage(req));
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416 mergeData.put("languages", getLoginLanguages());
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418 HTMLTemplateProcessor.process(res, loginTemplate, mergeData, out, getLocale(req));
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420 catch (Throwable e) {
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421 handleError(req, res, out, "Error sending login page: " + e.getMessage());
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425 private void _sendStartPage(HttpServletResponse res, HttpServletRequest req,
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426 PrintWriter out, EntityUsers userEntity) {
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427 String startTemplate = "templates/admin/start_admin.template";
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428 String sessionUrl = res.encodeURL("");
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431 // merge with logged in user and messages
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432 SimpleHash mergeData = new SimpleHash();
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433 mergeData.put("session", sessionUrl);
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434 mergeData.put("login_user", userEntity);
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435 if (messageModule == null)
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436 messageModule = new ModuleMessage(DatabaseMessages.getInstance());
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437 mergeData.put("messages",
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438 messageModule.getByWhereClause(null, "webdb_create desc", 0,
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441 mergeData.put("articletypes",
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442 DatabaseArticleType.getInstance().
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443 selectByWhereClause("", "id", 0, 20));
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445 HTMLTemplateProcessor.process(res, startTemplate, mergeData, out, getLocale(req));
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447 catch (Exception e) {
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448 e.printStackTrace(System.out);
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449 handleError(req, res, out, "error while trying to send startpage. " + e.getMessage());
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453 public String getServletInfo() {
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454 return "Mir " + configuration.getString("Mir.Version");
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457 private void checkLanguage(HttpSession session, HttpServletRequest req) {
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458 // a lang parameter always sets the language
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459 String lang = req.getParameter("language");
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460 if (lang != null) {
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461 logger.info("selected language " + lang + " overrides accept-language");
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462 setLanguage(session, lang);
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463 setLocale(session, new Locale(lang, ""));
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465 // otherwise store language from accept header in session
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466 else if (session.getAttribute("Language") == null) {
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467 logger.info("accept-language is " + req.getLocale().getLanguage());
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468 setLanguage(session, req.getLocale().getLanguage());
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469 setLocale(session, req.getLocale());
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