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📄 contextconfig.java

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/*
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */


package org.apache.catalina.startup;


import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Properties;

import javax.servlet.ServletContext;

import org.apache.catalina.Authenticator;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Logger;
import org.apache.catalina.Pipeline;
import org.apache.catalina.Valve;
import org.apache.catalina.Wrapper;
import org.apache.catalina.core.ContainerBase;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.core.StandardEngine;
import org.apache.catalina.deploy.ErrorPage;
import org.apache.catalina.deploy.FilterDef;
import org.apache.catalina.deploy.FilterMap;
import org.apache.catalina.deploy.LoginConfig;
import org.apache.catalina.deploy.SecurityConstraint;
import org.apache.catalina.session.StandardManager;
import org.apache.catalina.util.StringManager;
import org.apache.commons.digester.Digester;
import org.xml.sax.InputSource;
import org.xml.sax.SAXParseException;

/**
 * Startup event listener for a <b>Context</b> that configures the properties
 * of that Context, and the associated defined servlets.
 *
 * @author Craig R. McClanahan
 * @author Jean-Francois Arcand
 * @version $Revision: 1.40 $ $Date: 2004/01/25 20:57:18 $
 */

public final class ContextConfig
    implements LifecycleListener {

    private static org.apache.commons.logging.Log log=
        org.apache.commons.logging.LogFactory.getLog( ContextConfig.class );

    // ----------------------------------------------------- Instance Variables

    /**
     * The set of Authenticators that we know how to configure.  The key is
     * the name of the implemented authentication method, and the value is
     * the fully qualified Java class name of the corresponding Valve.
     */
    private static Properties authenticators = null;


    /**
     * The Context we are associated with.
     */
    private Context context = null;


    /**
     * The debugging detail level for this component.
     */
    private int debug = 0;

    
    /**
     * The default web application's deployment descriptor location.
     */
    private String defaultWebXml = null;
    
    
    /**
     * Track any fatal errors during startup configuration processing.
     */
    private boolean ok = false;


    /**
     * The string resources for this package.
     */
    private static final StringManager sm =
        StringManager.getManager(Constants.Package);


    /**
     * The <code>Digester</code> we will use to process web application
     * deployment descriptor files.
     */
    private static Digester webDigester = null;
    
    
    /**
     * The <code>Rule</code> used to parse the web.xml
     */
    private static WebRuleSet webRuleSet = new WebRuleSet();

    /**
     * Attribute value used to turn on/off XML validation
     */
     private static boolean xmlValidation = false;


    /**
     * Attribute value used to turn on/off XML namespace awarenes.
     */
    private static boolean xmlNamespaceAware = false;

        
    // ------------------------------------------------------------- Properties


    /**
     * Return the debugging detail level for this component.
     */
    public int getDebug() {

        return (this.debug);

    }


    /**
     * Set the debugging detail level for this component.
     *
     * @param debug The new debugging detail level
     */
    public void setDebug(int debug) {

        this.debug = debug;

    }
    
    
    /**
     * Return the location of the default deployment descriptor
     */
    public String getDefaultWebXml() {
        if( defaultWebXml == null ) defaultWebXml=Constants.DefaultWebXml;
        return (this.defaultWebXml);

    }


    /**
     * Set the location of the default deployment descriptor
     *
     * @param path Absolute/relative path to the default web.xml
     */
    public void setDefaultWebXml(String path) {

        this.defaultWebXml = path;

    }


    // --------------------------------------------------------- Public Methods


    /**
     * Process the START event for an associated Context.
     *
     * @param event The lifecycle event that has occurred
     */
    public void lifecycleEvent(LifecycleEvent event) {

        // Identify the context we are associated with
        try {
            context = (Context) event.getLifecycle();
//             if (context instanceof StandardContext) {
//                 int contextDebug = ((StandardContext) context).getDebug();
//                 if (contextDebug > this.debug)
//                     this.debug = contextDebug;
//             }
        } catch (ClassCastException e) {
            log.error(sm.getString("contextConfig.cce", event.getLifecycle()), e);
            return;
        }

        // Called from ContainerBase.addChild() -> StandardContext.start()
        // Process the event that has occurred
        if (event.getType().equals(Lifecycle.START_EVENT))
            start();
        else if (event.getType().equals(Lifecycle.STOP_EVENT))
            stop();

    }


    // -------------------------------------------------------- Private Methods


    /**
     * Process the application configuration file, if it exists.
     */
    private void applicationConfig() {

        // Open the application web.xml file, if it exists
        InputStream stream = null;
        ServletContext servletContext = context.getServletContext();
        if (servletContext != null)
            stream = servletContext.getResourceAsStream
                (Constants.ApplicationWebXml);
        if (stream == null) {
            log.info(sm.getString("contextConfig.applicationMissing") + " " + context);
            return;
        }
        
        long t1=System.currentTimeMillis();

        if (webDigester == null){
            webDigester = createWebDigester();
        }
        
        URL url=null;
        // Process the application web.xml file
        synchronized (webDigester) {
            try {
                url =
                    servletContext.getResource(Constants.ApplicationWebXml);
                if( url!=null ) {
                    InputSource is = new InputSource(url.toExternalForm());
                    is.setByteStream(stream);
                    webDigester.clear();
                    if (context instanceof StandardContext) {
                        ((StandardContext) context).setReplaceWelcomeFiles(true);
                    }

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