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;
33 import java.io.PrintWriter;
34 import java.lang.reflect.Method;
35 import java.util.GregorianCalendar;
36 import java.util.HashMap;
37 import java.util.Iterator;
38 import java.util.List;
39 import java.util.Locale;
41 import java.util.Vector;
42 import javax.servlet.ServletException;
43 import javax.servlet.UnavailableException;
44 import javax.servlet.http.HttpServletRequest;
45 import javax.servlet.http.HttpServletResponse;
46 import javax.servlet.http.HttpSession;
48 import org.apache.struts.util.MessageResources;
49 import freemarker.template.SimpleHash;
50 import freemarker.template.SimpleList;
51 import freemarker.template.SimpleScalar;
52 import freemarker.template.TemplateModel;
54 import mir.config.MirPropertiesConfiguration;
55 import mir.entity.adapter.EntityIteratorAdapter;
56 import mir.generator.FreemarkerGenerator;
57 import mir.log.LoggerWrapper;
58 import mir.misc.HTMLTemplateProcessor;
59 import mir.misc.StringUtil;
60 import mir.servlet.AbstractServlet;
61 import mir.servlet.ServletModule;
62 import mir.servlet.ServletModuleDispatch;
63 import mir.servlet.ServletModuleExc;
64 import mir.servlet.ServletModuleUserExc;
65 import mir.util.CachingRewindableIterator;
66 import mir.util.ExceptionFunctions;
67 import mir.util.StringRoutines;
68 import mircoders.entity.EntityUsers;
69 import mircoders.global.MirGlobal;
70 import mircoders.module.ModuleMessage;
71 import mircoders.module.ModuleUsers;
72 import mircoders.servlet.ServletHelper;
73 import mircoders.storage.DatabaseUsers;
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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 1.44 2003/04/21 02:58:29 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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89 private static Locale fallbackLocale = null;
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91 //I don't know about making this static cause it removes the
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92 //possibility to change the config on the fly.. -mh
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93 private static List loginLanguages = null;
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95 protected TemplateModel getLoginLanguages() throws ServletException {
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96 synchronized (Mir.class) {
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98 if (loginLanguages == null) {
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99 MessageResources messageResources =
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100 MessageResources.getMessageResources("bundles.adminlocal");
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101 MessageResources messageResources2 =
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102 MessageResources.getMessageResources("bundles.admin");
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105 StringRoutines.splitString(MirGlobal.config().getString("Mir.Login.Languages", "en"), ";");
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107 loginLanguages = new Vector();
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109 Iterator i = languages.iterator();
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111 while (i.hasNext()) {
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112 String code = (String) i.next();
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113 Locale locale = new Locale(code, "");
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114 String name = messageResources.getMessage(locale, "languagename");
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116 if (name == null) {
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117 name = messageResources2.getMessage(locale, "languagename");
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120 if (name == null) {
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124 Map record = new HashMap();
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125 record.put("name", name);
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126 record.put("code", code);
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127 loginLanguages.add(record);
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131 return FreemarkerGenerator.makeAdapter(loginLanguages);
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133 catch (Throwable t) {
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134 throw new ServletException(t.getMessage());
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139 // FIXME: this should probalby go into AbstractServlet so it can be used in
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140 // OpenMir as well -mh
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141 protected String getDefaultLanguage(HttpServletRequest aRequest) {
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142 String defaultlanguage =
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143 MirGlobal.config().getString("Mir.Login.DefaultLanguage", "");
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145 if (defaultlanguage.length() == 0) {
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146 Locale locale = aRequest.getLocale();
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147 defaultlanguage = locale.getLanguage();
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150 return defaultlanguage;
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153 protected synchronized Locale getFallbackLocale() throws ServletException {
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155 if (fallbackLocale == null) {
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156 fallbackLocale = new Locale(MirPropertiesConfiguration.instance().getString("Mir.Admin.FallbackLanguage", "en"), "");
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159 catch (Throwable t) {
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160 throw new ServletException(t.getMessage());
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163 return fallbackLocale;
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166 public void process(HttpServletRequest aRequest, HttpServletResponse aResponse)
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167 throws ServletException, IOException, UnavailableException {
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168 long startTime = System.currentTimeMillis();
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169 long sessionConnectTime = 0;
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170 EntityUsers userEntity;
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171 HttpSession session;
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174 configuration.addProperty("ServletName", getServletName());
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176 session = aRequest.getSession(true);
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177 userEntity = (EntityUsers) session.getAttribute("login.uid");
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179 if (aRequest.getServerPort() == 443) {
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185 //make sure client browsers don't cache anything
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186 setNoCaching(aResponse);
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188 //FIXME: this seems kind of hackish and only here because we can have
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189 // default other than the one that the browser is set to.
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190 Locale locale = new Locale(getDefaultLanguage(aRequest), "");
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191 String htmlcharset = "UTF-8";
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193 htmlcharset = MirPropertiesConfiguration.instance().getString("Mir.DefaultHTMLCharset");
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195 catch (Throwable t) {
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198 aResponse.setContentType("text/html; charset=" + htmlcharset);
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200 String moduleName = aRequest.getParameter("module");
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201 checkLanguage(session, aRequest);
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206 if (((moduleName != null) && moduleName.equals("login")) ||
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207 (userEntity == null)) {
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208 String user = aRequest.getParameter("login");
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209 String passwd = aRequest.getParameter("password");
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210 logger.debug("--login: evaluating for user: " + user);
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211 userEntity = allowedUser(user, passwd);
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213 if (userEntity == null) {
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214 // login failed: redirecting to login
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215 logger.warn("--login: failed!");
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216 _sendLoginPage(aResponse, aRequest, aResponse.getWriter());
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220 else if ((moduleName != null) && moduleName.equals("login")) {
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221 // login successful
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222 logger.info("--login: successful! setting uid: " + userEntity.getId());
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223 session.setAttribute("login.uid", userEntity);
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224 logger.debug("--login: trying to retrieve login.target");
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226 String target = (String) session.getAttribute("login.target");
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228 if (target != null) {
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229 logger.debug("Redirect: " + target);
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231 int serverPort = aRequest.getServerPort();
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232 String redirect = "";
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233 String redirectString = "";
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235 if (serverPort == 80) {
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237 aResponse.encodeURL(http + "://" + aRequest.getServerName() + target);
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239 "<html><head><meta http-equiv=refresh content=\"1;URL=" +
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240 redirect + "\"></head><body>going <a href=\"" + redirect +
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241 "\">Mir</a></body></html>";
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244 aResponse.encodeURL(http + "://" + aRequest.getServerName() + ":" +
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245 aRequest.getServerPort() + target);
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247 "<html><head><meta http-equiv=refresh content=\"1;URL=" +
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248 redirect + "\"></head><body>going <a href=\"" + redirect +
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249 "\">Mir</a></body></html>";
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252 aResponse.getWriter().println(redirectString);
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254 //aResponse.sendRedirect(redirect);
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256 // redirecting to default target
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257 logger.debug("--login: no target - redirecting to default");
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258 _sendStartPage(aResponse, aRequest, aResponse.getWriter(), userEntity);
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263 // if login succesful
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267 if ((moduleName != null) && moduleName.equals("logout")) {
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268 logger.info("--logout");
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269 session.invalidate();
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271 //session = aRequest.getSession(true);
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272 //checkLanguage(session, aRequest);
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273 _sendLoginPage(aResponse, aRequest, aResponse.getWriter());
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278 // Check if authed!
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279 if (userEntity == null) {
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280 // redirect to loginpage
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281 String redirectString = aRequest.getRequestURI();
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282 String queryString = aRequest.getQueryString();
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284 if ((queryString != null) && !queryString.equals("")) {
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285 redirectString += ("?" + aRequest.getQueryString());
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286 logger.debug("STORING: " + redirectString);
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287 session.setAttribute("login.target", redirectString);
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290 _sendLoginPage(aResponse, aRequest, aResponse.getWriter());
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295 // If no module is specified goto standard startpage
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296 if ((moduleName == null) || moduleName.equals("")) {
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297 logger.debug("no module: redirect to standardpage");
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298 _sendStartPage(aResponse, aRequest, aResponse.getWriter(), userEntity);
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304 // From now on regular dispatching...
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306 // get servletmodule by parameter and continue with dispacher
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307 ServletModule smod = getServletModuleForName(moduleName);
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308 ServletModuleDispatch.dispatch(smod, aRequest, aResponse);
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310 catch (Throwable e) {
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311 Throwable cause = ExceptionFunctions.traceCauseException(e);
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313 if (cause instanceof ServletModuleUserExc)
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314 handleUserError(aRequest, aResponse, aResponse.getWriter(), (ServletModuleUserExc) cause);
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316 handleError(aRequest, aResponse, aResponse.getWriter(), cause);
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321 sessionConnectTime = System.currentTimeMillis() - startTime;
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322 logger.info("EXECTIME (" + moduleName + "): " + sessionConnectTime + " ms");
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326 * Private method getServletModuleForName returns ServletModule
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329 * @param moduleName
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330 * @return ServletModule
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333 private static ServletModule getServletModuleForName(String moduleName) throws ServletModuleExc {
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334 // Instance in Map ?
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335 if (!servletModuleInstanceHash.containsKey(moduleName)) {
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336 // was not found in hash...
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338 Class theServletModuleClass = null;
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341 // first we try to get ServletModule from stern.che3.servlet
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342 theServletModuleClass =
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343 Class.forName("mircoders.servlet.ServletModule" + moduleName);
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344 } catch (ClassNotFoundException e) {
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345 // on failure, we try to get it from lib-layer
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346 theServletModuleClass =
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347 Class.forName("mir.servlet.ServletModule" + moduleName);
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350 Method m = theServletModuleClass.getMethod("getInstance", null);
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351 ServletModule smod = (ServletModule) m.invoke(null, null);
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353 // we put it into map for further reference
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354 servletModuleInstanceHash.put(moduleName, smod);
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358 catch (Exception e) {
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359 throw new ServletModuleExc("*** error resolving classname for " + moduleName + " -- " + e.getMessage());
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363 return (ServletModule) servletModuleInstanceHash.get(moduleName);
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367 private void handleUserError(HttpServletRequest aRequest, HttpServletResponse aResponse,
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368 PrintWriter out, ServletModuleUserExc anException) {
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370 logger.info("user error: " + anException.getMessage());
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371 SimpleHash modelRoot = new SimpleHash();
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372 MessageResources messages = MessageResources.getMessageResources("bundles.admin");
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373 modelRoot.put("errorstring",
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375 messages.getMessage(getLocale(aRequest), anException.getMessage(), anException.getParameters())
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377 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
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378 HTMLTemplateProcessor.process(
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380 MirPropertiesConfiguration.instance().getString("Mir.UserErrorTemplate"),
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384 getLocale(aRequest),
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388 catch (Exception e) {
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389 logger.error("Error in UserErrorTemplate");
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394 private void handleError(HttpServletRequest aRequest, HttpServletResponse aResponse,PrintWriter out, Throwable anException) {
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397 logger.error("error: " + anException);
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398 SimpleHash modelRoot = new SimpleHash();
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399 modelRoot.put("errorstring", new SimpleScalar(anException.getMessage()));
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400 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(
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401 new GregorianCalendar())));
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402 HTMLTemplateProcessor.process(
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403 aResponse,MirPropertiesConfiguration.instance().getString("Mir.ErrorTemplate"),
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404 modelRoot,null,out, getLocale(aRequest), getFallbackLocale());
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407 catch (Exception e) {
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408 logger.error("Error in ErrorTemplate");
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413 * evaluate login for user / password
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415 protected EntityUsers allowedUser(String user, String password) {
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417 if (usersModule == null) {
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418 usersModule = new ModuleUsers(DatabaseUsers.getInstance());
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421 return usersModule.getUserForLogin(user, password);
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423 catch (Exception e) {
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424 logger.debug(e.getMessage());
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425 e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
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431 // Redirect-methods
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432 private void _sendLoginPage(HttpServletResponse aResponse, HttpServletRequest aRequest,
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434 String loginTemplate = configuration.getString("Mir.LoginTemplate");
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435 String sessionUrl = aResponse.encodeURL("");
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438 SimpleHash mergeData = new SimpleHash();
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439 SimpleList languages = new SimpleList();
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441 mergeData.put("session", sessionUrl);
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443 mergeData.put("defaultlanguage", getDefaultLanguage(aRequest));
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444 mergeData.put("languages", getLoginLanguages());
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446 HTMLTemplateProcessor.process(aResponse, loginTemplate, mergeData, null, out, getLocale(aRequest), getFallbackLocale());
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448 catch (Throwable e) {
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449 handleError(aRequest, aResponse, out, e);
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453 private void _sendStartPage(HttpServletResponse aResponse, HttpServletRequest aRequest,
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454 PrintWriter out, EntityUsers userEntity) {
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455 String startTemplate = configuration.getString("Mir.StartTemplate");
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456 String sessionUrl = aResponse.encodeURL("");
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459 Map mergeData = ServletHelper.makeGenerationData(new Locale[] {getLocale(aRequest), getFallbackLocale()}, "bundles.admin", "bundles.adminlocal");
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460 mergeData.put("messages",
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461 new CachingRewindableIterator(
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462 new EntityIteratorAdapter( "", "webdb_create desc", 10,
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463 MirGlobal.localizer().dataModel().adapterModel(), "internalMessage", 10, 0)));
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464 mergeData.put("searchvalue", null);
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465 mergeData.put("searchfield", null);
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466 mergeData.put("searchispublished", null);
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467 mergeData.put("searcharticletype", null);
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468 mergeData.put("searchorder", null);
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469 mergeData.put("selectarticleurl", null);
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471 ServletHelper.generateResponse(aResponse.getWriter(), mergeData, startTemplate);
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473 catch (Exception e) {
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474 e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
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475 handleError(aRequest, aResponse, out, e);
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479 public String getServletInfo() {
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480 return "Mir " + configuration.getString("Mir.Version");
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483 private void checkLanguage(HttpSession session, HttpServletRequest aRequest) {
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484 // a lang parameter always sets the language
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485 String lang = aRequest.getParameter("language");
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487 if (lang != null) {
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488 logger.info("selected language " + lang + " overrides accept-language");
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489 setLanguage(session, lang);
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491 // otherwise store language from accept header in session
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492 else if (session.getAttribute("language") == null) {
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493 logger.info("accept-language is " + aRequest.getLocale().getLanguage());
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494 setLanguage(session, aRequest.getLocale().getLanguage());
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