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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.

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/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * For further information about Alkacon Software GmbH & Co. KG, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.main;

import org.opencms.ade.configuration.CmsADEManager;
import org.opencms.db.CmsAliasManager;
import org.opencms.db.CmsDefaultUsers;
import org.opencms.db.CmsExportPoint;
import org.opencms.db.CmsLoginManager;
import org.opencms.db.CmsSqlManager;
import org.opencms.db.CmsSubscriptionManager;
import org.opencms.file.CmsObject;
import org.opencms.file.CmsResource;
import org.opencms.i18n.CmsLocaleManager;
import org.opencms.importexport.CmsImportExportManager;
import org.opencms.loader.CmsResourceManager;
import org.opencms.loader.CmsTemplateContextManager;
import org.opencms.module.CmsModuleManager;
import org.opencms.monitor.CmsMemoryMonitor;
import org.opencms.publish.CmsPublishManager;
import org.opencms.repository.CmsRepositoryManager;
import org.opencms.scheduler.CmsScheduleManager;
import org.opencms.search.CmsSearchManager;
import org.opencms.security.CmsOrgUnitManager;
import org.opencms.security.CmsRole;
import org.opencms.security.CmsRoleManager;
import org.opencms.security.I_CmsAuthorizationHandler;
import org.opencms.security.I_CmsCredentialsResolver;
import org.opencms.security.I_CmsPasswordHandler;
import org.opencms.security.I_CmsValidationHandler;
import org.opencms.site.CmsSiteManagerImpl;
import org.opencms.staticexport.CmsLinkManager;
import org.opencms.staticexport.CmsStaticExportManager;
import org.opencms.ui.apps.CmsWorkplaceAppManager;
import org.opencms.workflow.I_CmsWorkflowManager;
import org.opencms.workplace.CmsWorkplaceManager;
import org.opencms.xml.CmsXmlContentTypeManager;

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ScheduledThreadPoolExecutor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;

/**
 * The OpenCms "operating system" that provides
 * public static methods which can be used by other classes to access
 * basic system features of OpenCms like logging etc.

* * This Object provides singleton access to the initialized OpenCms runtime system. * Some methods are for internal or advanced use only, but others are of also of interest * for general OpenCms development.

* * For example, to generate a new instance of {@link org.opencms.file.CmsObject} class in your application, * use {@link org.opencms.main.OpenCms#initCmsObject(String)}. The argument String should be * the name of the guest user, usually "Guest" and more formally obtained by {@link org.opencms.db.CmsDefaultUsers#getUserGuest()}. * This will give you an initialized context with guest user permissions. * Then use {@link CmsObject#loginUser(String, String)} to log in the user you want. * Obviously you need the password for the new user.

* * Using {@link #getSiteManager()} you can obtain the initialized {@link org.opencms.site.CmsSiteManagerImpl} * which provides information about the sites configured in the running OpenCms instance.

* * The {@link org.opencms.db.CmsDefaultUsers} instance returned by {@link #getDefaultUsers()} * provides information about the names of the OpenCms default users.

* * Other objects of note that can be obtained by this class include the {@link org.opencms.module.CmsModuleManager} * or the {@link org.opencms.scheduler.CmsScheduleManager}.

* * When using the instances returned by this object, keep in mind that applying changes to these may alter the basic OpenCms * system configuration, which in turn may affect the systems performance or stability.

* * @since 6.0.0 */ public final class OpenCms { /** Runlevel 0: System is offline. */ public static final int RUNLEVEL_0_OFFLINE = 0; /** Runlevel 1: Core object created, no database (some test cases run in this level). */ public static final int RUNLEVEL_1_CORE_OBJECT = 1; /** Runlevel 2: Initializing the system, required since this may take some seconds because of database connections. */ public static final int RUNLEVEL_2_INITIALIZING = 2; /** Runlevel 3: Shell access to the database possible, but no servlet context available. */ public static final int RUNLEVEL_3_SHELL_ACCESS = 3; /** Runlevel 4: Final runlevel where database and servlet are initialized. */ public static final int RUNLEVEL_4_SERVLET_ACCESS = 4; /** * The public contructor is hidden to prevent generation of instances of this class.

*/ private OpenCms() { // empty } /** * Add a cms event listener that listens to all events.

* * @param listener the listener to add */ public static void addCmsEventListener(I_CmsEventListener listener) { OpenCmsCore.getInstance().getEventManager().addCmsEventListener(listener); } /** * Add a cms event listener that listens only to particular events.

* * @param listener the listener to add * @param eventTypes the events to listen for */ public static void addCmsEventListener(I_CmsEventListener listener, int[] eventTypes) { OpenCmsCore.getInstance().getEventManager().addCmsEventListener(listener, eventTypes); } /** * Notify all event listeners that a particular event has occurred.

* * @param event a CmsEvent */ public static void fireCmsEvent(CmsEvent event) { OpenCmsCore.getInstance().getEventManager().fireEvent(event); } /** * Notify all event listeners that a particular event has occurred.

* * The event will be given to all registered {@link I_CmsEventListener} objects.

* * @param type event type * @param data event data */ public static void fireCmsEvent(int type, Map data) { OpenCmsCore.getInstance().getEventManager().fireEvent(type, data); } /** * Gets the initialized ADE manager.

* * @return the initialized ADE manager */ public static CmsADEManager getADEManager() { return OpenCmsCore.getInstance().getADEManager(); } /** * Gets the alias manager.

* * @return the alias manager */ public static CmsAliasManager getAliasManager() { return OpenCmsCore.getInstance().getAliasManager(); } /** * Returns the configured authorization handler.

* * @return the configured authorization handler */ public static I_CmsAuthorizationHandler getAuthorizationHandler() { return OpenCmsCore.getInstance().getAuthorizationHandler(); } /** * Gets the credentials resolver instance.

* * @return the credentials resolver */ public static I_CmsCredentialsResolver getCredentialsResolver() { return OpenCmsCore.getInstance().getCredentialsResolver(); } /** * Returns the configured list of default directory file names (instances of {@link String}).

* * Caution: This list can not be modified.

* * @return the configured list of default directory file names */ public static List getDefaultFiles() { return OpenCmsCore.getInstance().getDefaultFiles(); } /** * Returns the default user and group name configuration.

* * @return the default user and group name configuration */ public static CmsDefaultUsers getDefaultUsers() { return OpenCmsCore.getInstance().getDefaultUsers(); } /** * Returns the event manger that handles all OpenCms events.

* * @return the event manger that handles all OpenCms events */ public static CmsEventManager getEventManager() { return OpenCmsCore.getInstance().getEventManager(); } /** * Gets the thread pool executor.

* * @return the thread pool executor */ public static ScheduledThreadPoolExecutor getExecutor() { return OpenCmsCore.getInstance().getExecutor(); } /** * Returns the configured export points, * the returned set being an unmodifiable set.

* * @return an unmodifiable set of the configured export points */ public static Set getExportPoints() { return OpenCmsCore.getInstance().getExportPoints(); } /** * Returns the initialized import/export manager, * which contains information about how to handle imported resources.

* * @return the initialized import/export manager */ public static CmsImportExportManager getImportExportManager() { return OpenCmsCore.getInstance().getImportExportManager(); } /** * Returns the link manager to resolve links in <link> tags.

* * @return the link manager to resolve links in <link> tags */ public static CmsLinkManager getLinkManager() { return OpenCmsCore.getInstance().getLinkManager(); } /** * Returns the locale manager used for obtaining the current locale.

* * @return the locale manager */ public static CmsLocaleManager getLocaleManager() { return OpenCmsCore.getInstance().getLocaleManager(); } /** * Returns the log for the selected object.

* * If the provided object is a String, this String will * be used as channel name. Otherwise the objects * class name will be used as channel name.

* * @param obj the object channel to use * @return the log for the selected object channel */ public static Log getLog(Object obj) { return CmsLog.getLog(obj); } /** * Returns the login manager used to check if a login is possible.

* * @return the login manager */ public static CmsLoginManager getLoginManager() { return OpenCmsCore.getInstance().getLoginManager(); } /** * Returns the memory monitor.

* * @return the memory monitor */ public static CmsMemoryMonitor getMemoryMonitor() { return OpenCmsCore.getInstance().getMemoryMonitor(); } /** * Returns the module manager.

* * @return the module manager */ public static CmsModuleManager getModuleManager() { return OpenCmsCore.getInstance().getModuleManager(); } /** * Returns the organizational unit manager.

* * @return the organizational unit manager */ public static CmsOrgUnitManager getOrgUnitManager() { return OpenCmsCore.getInstance().getOrgUnitManager(); } /** * Returns the password handler.

* * @return the password handler */ public static I_CmsPasswordHandler getPasswordHandler() { return OpenCmsCore.getInstance().getPasswordHandler(); } /** * Returns the core publish manager class.

* * @return the publish manager instance */ public static CmsPublishManager getPublishManager() { return OpenCmsCore.getInstance().getPublishManager(); } /** * Returns the repository manager.

* * @return the repository manager */ public static CmsRepositoryManager getRepositoryManager() { return OpenCmsCore.getInstance().getRepositoryManager(); } /** * Returns the resource manager.

* * @return the resource manager */ public static CmsResourceManager getResourceManager() { return OpenCmsCore.getInstance().getResourceManager(); } /** * Returns the role manager.

* * @return the role manager */ public static CmsRoleManager getRoleManager() { return OpenCmsCore.getInstance().getRoleManager(); } /** * Returns the current OpenCms run level.

* * The following runlevels are defined: *

*
Runlevel {@link OpenCms#RUNLEVEL_0_OFFLINE}:
* OpenCms is in the process of being shut down, the system is offline.
* *
Runlevel {@link OpenCms#RUNLEVEL_1_CORE_OBJECT}:
* OpenCms instance available, but configuration has not been processed. * No database or VFS available.
* *
Runlevel {@link OpenCms#RUNLEVEL_2_INITIALIZING}:
* OpenCms is initializing, but the process is not finished. * The database with the VFS is currently being connected but can't be accessed.
* *
Runlevel {@link OpenCms#RUNLEVEL_3_SHELL_ACCESS}:
* OpenCms database and VFS available, but http processing (i.e. servlet) not initialized. * This is the runlevel the OpenCms shell operates in.
* *
Runlevel {@link OpenCms#RUNLEVEL_4_SERVLET_ACCESS}:
* OpenCms fully initialized, servlet and database available. * This is the "default" when OpenCms is in normal operation.
*
* * @return the OpenCms run level */ public static int getRunLevel() { return OpenCmsCore.getInstance().getRunLevel(); } /** * Looks up a value in the runtime property Map.

* * @param key the key to look up in the runtime properties * @return the value for the key, or null if the key was not found */ public static Object getRuntimeProperty(Object key) { return OpenCmsCore.getInstance().getRuntimeProperty(key); } /** * Returns the configured schedule manager.

* * @return the configured schedule manager */ public static CmsScheduleManager getScheduleManager() { return OpenCmsCore.getInstance().getScheduleManager(); } /** * Returns the initialized search manager, * which provides indexing and searching operations.

* * @return the initialized search manager */ public static CmsSearchManager getSearchManager() { return OpenCmsCore.getInstance().getSearchManager(); } /** * Returns the session manager that keeps track of the active users.

* * @return the session manager that keeps track of the active users */ public static CmsSessionManager getSessionManager() { return OpenCmsCore.getInstance().getSessionManager(); } /** * Returns the initialized site manager, * which contains information about all configured sites.

* * @return the initialized site manager */ public static CmsSiteManagerImpl getSiteManager() { return OpenCmsCore.getInstance().getSiteManager(); } /** * Returns an instance of the common sql manager.

* * @return an instance of the common sql manager */ public static CmsSqlManager getSqlManager() { return OpenCmsCore.getInstance().getSqlManager(); } /** * Returns the properties for the static export.

* * @return the properties for the static export */ public static CmsStaticExportManager getStaticExportManager() { return OpenCmsCore.getInstance().getStaticExportManager(); } /** * Returns the subscription manager.

* * @return the subscription manager */ public static CmsSubscriptionManager getSubscriptionManager() { return OpenCmsCore.getInstance().getSubscriptionManager(); } /** * Returns the system information storage.

* * @return the system information storage */ public static CmsSystemInfo getSystemInfo() { return OpenCmsCore.getInstance().getSystemInfo(); } /** * Returns the list of system defined roles (instances of {@link CmsRole}).

* * Caution: This list can not be modified.

* * @return the list of system defined roles */ public static List getSystemRoles() { return CmsRole.getSystemRoles(); } /** * Gets the template context manager.

* * @return the template context manager instance */ public static CmsTemplateContextManager getTemplateContextManager() { return OpenCmsCore.getInstance().getTemplateContextManager(); } /** * Returns the OpenCms Thread store.

* * @return the OpenCms Thread store */ public static CmsThreadStore getThreadStore() { return OpenCmsCore.getInstance().getThreadStore(); } /** * Returns the runtime validation handler.

* * @return the validation handler */ public static I_CmsValidationHandler getValidationHandler() { return OpenCmsCore.getInstance().getValidationHandler(); } /** * Gets the initialized workflow manager.

* * @return the initialized workflow manager */ public static I_CmsWorkflowManager getWorkflowManager() { return OpenCmsCore.getInstance().getWorkflowManager(); } /** * Returns the workplace app manager.

* * @return the app manager */ public static CmsWorkplaceAppManager getWorkplaceAppManager() { return OpenCmsCore.getInstance().getWorkplaceAppManager(); } /** * Returns the initialized workplace manager, * which contains information about the global workplace settings.

* * @return the initialized workplace manager */ public static CmsWorkplaceManager getWorkplaceManager() { return OpenCmsCore.getInstance().getWorkplaceManager(); } /** * Returns the XML content type manager.

* * @return the XML content type manager */ public static CmsXmlContentTypeManager getXmlContentTypeManager() { return OpenCmsCore.getInstance().getXmlContentTypeManager(); } /** * Returns an independent copy of the provided CmsObject.

* * This can be useful in case a permanent reference to a CmsObject is stored. * Changing the request context values (for example project, siteroot) in the new CmsObject * will have no side effects to the CmsObject it was copied form.

* * @param cms the CmsObject to create a copy of * * @return an independent copy of the provided CmsObject * * @throws CmsException in case the initialization failed * * @see OpenCms#initCmsObject(CmsObject) * @see OpenCms#initCmsObject(CmsObject, CmsContextInfo) * @see OpenCms#initCmsObject(String) */ public static CmsObject initCmsObject(CmsObject cms) throws CmsException { return OpenCmsCore.getInstance().initCmsObject(cms); } /** * Returns an initialized CmsObject with the user and context initialized as provided.

* * Note: Only if the provided adminCms CmsObject has admin permissions, * this method allows the creation a CmsObject for any existing user. Otherwise * only the default users 'Guest' and 'Export' can initialized with * this method, all other user names will throw an Exception.

* * @param adminCms must either be initialized with "Admin" permissions, or null * @param contextInfo the context info to create a CmsObject for * * @return an initialized CmsObject with the given users permissions * * @throws CmsException if an invalid user name was provided, or if something else goes wrong * * @see org.opencms.db.CmsDefaultUsers#getUserGuest() * @see org.opencms.db.CmsDefaultUsers#getUserExport() * @see OpenCms#initCmsObject(CmsObject) * @see OpenCms#initCmsObject(CmsObject, CmsContextInfo) * @see OpenCms#initCmsObject(String) */ public static CmsObject initCmsObject(CmsObject adminCms, CmsContextInfo contextInfo) throws CmsException { return OpenCmsCore.getInstance().initCmsObject(adminCms, contextInfo); } /** * Returns an initialized CmsObject (OpenCms user context) with the user initialized as provided, * with the "Online" project selected and "/" set as the current site root.

* * Note: Only the default users 'Guest' and 'Export' can initialized with * this method, all other user names will throw an Exception.

* * In order to initialize another user (for example, the {@link CmsDefaultUsers#getUserAdmin()}), * you need to get the 'Guest' user context first, then login the target user with * his user name and password, using {@link CmsObject#loginUser(String, String)}. * There is no way to obtain a user context other then the 'Guest' or 'Export' user * without the users password. This is a security feature.

* * @param user the user name to initialize, can only be * {@link org.opencms.db.CmsDefaultUsers#getUserGuest()} or * {@link org.opencms.db.CmsDefaultUsers#getUserExport()} * * @return an initialized CmsObject with the given users permissions * * @throws CmsException if an invalid user name was provided, or if something else goes wrong * * @see org.opencms.db.CmsDefaultUsers#getUserGuest() * @see org.opencms.db.CmsDefaultUsers#getUserExport() * @see OpenCms#initCmsObject(CmsObject) * @see OpenCms#initCmsObject(CmsObject, CmsContextInfo) * @see OpenCms#initCmsObject(String) */ public static CmsObject initCmsObject(String user) throws CmsException { return OpenCmsCore.getInstance().initCmsObject(user); } /** * Reads the requested resource from the OpenCms VFS, * and in case a directory name is requested, the default files of the * directory will be looked up and the first match is returned.

* * The resource that is returned is always a {@link org.opencms.file.CmsFile}, * even though the content will usually not be loaded in the result. Folders are never returned since * the point of this method is really to load the default file if just a folder name is requested.

* * The URI stored in the given OpenCms user context will be changed to the URI of the resource * that was found and returned.

* * Implementing and configuring an {@link I_CmsResourceInit} handler * allows to customize the process of default resource selection.

* * @param cms the current users OpenCms context * @param resourceName the path of the requested resource in the OpenCms VFS * @param req the current http request * @param res the current http response * @return the requested resource read from the VFS * * @throws CmsException in case the requested file does not exist or the user has insufficient access permissions */ public static CmsResource initResource( CmsObject cms, String resourceName, HttpServletRequest req, HttpServletResponse res) throws CmsException { return OpenCmsCore.getInstance().initResource(cms, resourceName, req, res); } /** * Removes a cms event listener.

* * @param listener the listener to remove */ public static void removeCmsEventListener(I_CmsEventListener listener) { OpenCmsCore.getInstance().getEventManager().removeCmsEventListener(listener); } /** * This method adds an Object to the OpenCms runtime properties. * The runtime properties can be used to store Objects that are shared * in the whole system.

* * @param key the key to add the Object with * @param value the value of the Object to add */ public static void setRuntimeProperty(Object key, Object value) { OpenCmsCore.getInstance().setRuntimeProperty(key, value); } /** * Writes the XML configuration for the provided configuration class.

* * @param clazz the configuration class to write the XML for */ public static void writeConfiguration(Class clazz) { OpenCmsCore.getInstance().writeConfiguration(clazz); } }





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