/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.
*/
package org.olat.admin;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.olat.admin.sysinfo.InfoMessageManager;
import org.olat.core.CoreSpringFactory;
import org.olat.core.dispatcher.Dispatcher;
import org.olat.core.dispatcher.DispatcherModule;
import org.olat.core.gui.media.ServletUtil;
import org.olat.core.util.session.UserSessionManager;
/**
*
* This dispatcher acts as proxy to receive the message.
* @see org.olat.admin.AdminModule#setMaintenanceMessage(HttpServletRequest, HttpServletResponse)
*
* <P>
* Initial Date: 13.06.2006 <br>
* @author patrickb
* @author christian guretzki
*/
public class AdminModuleDispatcher implements Dispatcher {
private final static String PARAMETER_CMD = "cmd";
private final static String PARAMETER_MSG = "msg";
private final static String PARAMETER_MAX_MESSAGE = "maxsessions";
private final static String PARAMETER_NBR_SESSIONS = "nbrsessions";
private final static String PARAMETER_SESSIONTIMEOUT ="sec";
private final static String CMD_SET_MAINTENANCE_MESSAGE = "setmaintenancemessage";
private final static String CMD_SET_INFO_MESSAGE = "setinfomessage";
private final static String CMD_SET_LOGIN_BLOCKED = "setloginblocked";
private final static String CMD_SET_LOGIN_NOT_BLOCKED = "setloginnotblocked";
private final static String CMD_SET_MAX_SESSIONS = "setmaxsessions";
private final static String CMD_INVALIDATE_ALL_SESSIONS = "invalidateallsessions";
private final static String CMD_INVALIDATE_OLDEST_SESSIONS = "invalidateoldestsessions";
private final static String CMD_SET_SESSIONTIMEOUT = "sessiontimeout";
/**
* @see org.olat.core.dispatcher.Dispatcher#execute(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String)
*/
@Override
public void execute(HttpServletRequest request, HttpServletResponse response) {
String cmd = request.getParameter(PARAMETER_CMD);
if (cmd.equalsIgnoreCase(CMD_SET_MAINTENANCE_MESSAGE) || cmd.equalsIgnoreCase(CMD_SET_INFO_MESSAGE)) {
handleSetMaintenanceOrInfoMessage(request, response, cmd);
} else {
if (CoreSpringFactory.getImpl(AdminModule.class).checkSessionAdminToken(request)) {
handleSessionsCommand(request, response, cmd);
} else {
DispatcherModule.sendForbidden(request.getPathInfo(), response);
}
}
}
/**
* Handle session-administration commands (setLoginBlocked, setLoginNotBlocked, setMaxSession, invalidateAllSessions,
* ïnvalidateOldestSessions).
*/
private void handleSessionsCommand(HttpServletRequest request, HttpServletResponse response, String cmd) {
if (cmd.equalsIgnoreCase(CMD_SET_LOGIN_BLOCKED)) {
CoreSpringFactory.getImpl(AdminModule.class).setLoginBlocked(true, false);
ServletUtil.serveStringResource(request, response, "Ok, login blocked");
} else if (cmd.equalsIgnoreCase(CMD_SET_LOGIN_NOT_BLOCKED)) {
CoreSpringFactory.getImpl(AdminModule.class).setLoginBlocked(false, false);
ServletUtil.serveStringResource(request, response, "Ok, login no more blocked");
}else if (cmd.equalsIgnoreCase(CMD_SET_MAX_SESSIONS)) {
handleSetMaxSessions(request, response);
}else if (cmd.equalsIgnoreCase(CMD_INVALIDATE_ALL_SESSIONS)) {
CoreSpringFactory.getImpl(UserSessionManager.class).invalidateAllSessions();
ServletUtil.serveStringResource(request, response, "Ok, Invalidated all sessions");
}else if (cmd.equalsIgnoreCase(CMD_INVALIDATE_OLDEST_SESSIONS)) {
handleInvidateOldestSessions(request, response);
}else if(cmd.equalsIgnoreCase(CMD_SET_SESSIONTIMEOUT)) {
handleSetSessiontimeout(request, response);
} else {
ServletUtil.serveStringResource(request, response, "NOT OK, unknown command=" + cmd);
}
}
/**
* Handle setMaxSessions command, extract parameter maxsessions form request and call method on AdminModule.
* @param request
* @param response
*/
private void handleSetMaxSessions(HttpServletRequest request, HttpServletResponse response) {
String maxSessionsString = request.getParameter(PARAMETER_MAX_MESSAGE);
if (maxSessionsString == null || maxSessionsString.equals("")) {
ServletUtil.serveStringResource(request, response, "NOT_OK, missing parameter " + PARAMETER_MAX_MESSAGE);
} else {
try {
int maxSessions = Integer.parseInt(maxSessionsString);
CoreSpringFactory.getImpl(AdminModule.class).setMaxSessions(maxSessions);
ServletUtil.serveStringResource(request, response, "Ok, max-session=" + maxSessions);
} catch (NumberFormatException nbrException) {
ServletUtil.serveStringResource(request, response, "NOT_OK, parameter " + PARAMETER_MAX_MESSAGE + " must be a number");
}
}
}
private void handleSetSessiontimeout(HttpServletRequest request, HttpServletResponse response) {
String paramStr = request.getParameter(PARAMETER_SESSIONTIMEOUT);
if (paramStr == null || paramStr.equals("")) {
ServletUtil.serveStringResource(request, response, "NOT_OK, missing parameter " + PARAMETER_SESSIONTIMEOUT);
} else {
try {
int sessionTimeout = Integer.parseInt(paramStr);
CoreSpringFactory.getImpl(UserSessionManager.class).setGlobalSessionTimeout(sessionTimeout);
ServletUtil.serveStringResource(request, response, "Ok, sessiontimeout=" + sessionTimeout);
} catch (NumberFormatException nbrException) {
ServletUtil.serveStringResource(request, response, "NOT_OK, parameter " + PARAMETER_SESSIONTIMEOUT + " must be a number");
}
}
}
/**
* Handle invalidateOldestSessions command, extract parameter nbrsessions form request and call method on AdminModule.
* @param request
* @param response
*/
private void handleInvidateOldestSessions(HttpServletRequest request, HttpServletResponse response) {
String nbrSessionsString = request.getParameter(PARAMETER_NBR_SESSIONS);
if (nbrSessionsString == null || nbrSessionsString.equals("")) {
ServletUtil.serveStringResource(request, response, "NOT_OK, missing parameter " + PARAMETER_NBR_SESSIONS);
} else {
try {
int nbrSessions = Integer.parseInt(nbrSessionsString);
CoreSpringFactory.getImpl(UserSessionManager.class).invalidateOldestSessions(nbrSessions);
ServletUtil.serveStringResource(request, response, "Ok, Invalidated oldest sessions, nbrSessions=" + nbrSessions);
} catch (NumberFormatException nbrException) {
ServletUtil.serveStringResource(request, response, "NOT_OK, parameter " + PARAMETER_NBR_SESSIONS + " must be a number");
}
}
}
/**
* Handle setMaintenanceMessage command, extract parameter msg form request and call method on AdminModule.
* @param request
* @param response
*/
private void handleSetMaintenanceOrInfoMessage(HttpServletRequest request, HttpServletResponse response, String cmd) {
AdminModule adminModule = CoreSpringFactory.getImpl(AdminModule.class);
if (adminModule.checkMaintenanceMessageToken(request)) {
String message = request.getParameter(PARAMETER_MSG);
if (cmd.equalsIgnoreCase(CMD_SET_INFO_MESSAGE)){
InfoMessageManager mrg = (InfoMessageManager) CoreSpringFactory.getBean(InfoMessageManager.class);
mrg.setInfoMessage(message);
ServletUtil.serveStringResource(request, response, "Ok, new infoMessage is::" + message);
} else if (cmd.equalsIgnoreCase(CMD_SET_MAINTENANCE_MESSAGE)){
adminModule.setMaintenanceMessage(message);
ServletUtil.serveStringResource(request, response, "Ok, new maintenanceMessage is::" + message);
}
} else {
DispatcherModule.sendForbidden(request.getPathInfo(), response);
}
}
}