ajp13connector.java

Tomcat 4.1与WebServer集成组件的源代码包.

/*
 * $Header: /home/cvs/jakarta-tomcat-connectors/jk/java/org/apache/ajp/tomcat4/Ajp13Connector.java,v 1.17 2002/12/27 02:21:27 glenn Exp $
 * $Revision: 1.17 $
 * $Date: 2002/12/27 02:21:27 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 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 [e-mail].
 *
 * 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.ajp.tomcat4;

import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.security.AccessControlException;
import java.util.Stack;
import java.util.Vector;
import java.util.Enumeration;
import org.apache.catalina.Connector;
import org.apache.catalina.Container;
import org.apache.catalina.HttpRequest;
import org.apache.catalina.HttpResponse;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Logger;
import org.apache.catalina.Request;
import org.apache.catalina.Response;
import org.apache.catalina.Service;
import org.apache.catalina.net.DefaultServerSocketFactory;
import org.apache.catalina.net.ServerSocketFactory;
import org.apache.catalina.util.LifecycleSupport;
import org.apache.catalina.util.StringManager;

/**
 * Implementation of an Ajp13 connector.
 *
 * @author Kevin Seguin
 * @version $Revision: 1.17 $ $Date: 2002/12/27 02:21:27 $
 */


public final class Ajp13Connector
    implements Connector, Lifecycle, Runnable {


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


    /**
     * The accept count for this Connector.
     */
    private int acceptCount = 10;


    /**
     * The IP address on which to bind, if any.  If <code>null</code>, all
     * addresses on the server will be bound.
     */
    private String address = null;


    /**
     * The input buffer size we should create on input streams.
     */
    private int bufferSize = 2048;


    /**
     * The Container used for processing requests received by this Connector.
     */
    protected Container container = null;


    /**
     * The set of processors that have ever been created.
     */
    private Vector created = new Vector();


    /**
     * The current number of processors that have been created.
     */
    private int curProcessors = 0;


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


    /**
     * The server socket factory for this component.
     */
    private ServerSocketFactory factory = null;


    /**
     * Descriptive information about this Connector implementation.
     */
    private static final String info =
        "org.apache.catalina.connector.ajp.Ajp13Connector/1.0";


    /**
     * redirect port.
     */
    private int redirectPort = -1;

    /**
     * enable DNS lookups.
     */
    private boolean enableLookups = false;

    /**
     * The lifecycle event support for this component.
     */
    protected LifecycleSupport lifecycle = new LifecycleSupport(this);


    /**
     * The minimum number of processors to start at initialization time.
     */
    protected int minProcessors = 5;


    /**
     * The maximum number of processors allowed, or <0 for unlimited.
     */
    private int maxProcessors = 20;


    /**
     * Timeout value on the incoming connection.
     * Note : a value of 0 means no timeout.
     */
    private int connectionTimeout = -1;


    /**
     * Linger value to be used on socket close.
     * Note : a value of -1 means no linger used on close.
     */
    private int connectionLinger = -1;


    /**
     * The port number on which we listen for ajp13 requests.
     */
    private int port = 8009;


    /**
     * The set of processors that have been created but are not currently
     * being used to process a request.
     */
    private Stack processors = new Stack();


    /**
     * The request scheme that will be set on all requests received
     * through this connector.
     */
    private String scheme = "http";


    /**
     * The secure connection flag that will be set on all requests received
     * through this connector.
     */
    private boolean secure = false;


    /**
     * The server socket through which we listen for incoming TCP connections.
     */
    private ServerSocket serverSocket = null;


    /**
     * The string manager for this package.
     */
    private StringManager sm =
	StringManager.getManager(Constants.PACKAGE);


    /**
     * Has this component been started yet?
     */
    private boolean started = false;


    /**
     * The shutdown signal to our background thread
     */
    private boolean stopped = false;


    /**
     * The background thread.
     */
    private Thread thread = null;


    /**
     * This connector's thread group.
     */
    private ThreadGroup threadGroup = null;


    /**
     * The name to register for the background thread.
     */
    private String threadName = null;


    /**
     * A thread that periodically logs debug info if debug > 0.
     */
    private DebugThread debugThread = null;


    /**
     * The thread synchronization object.
     */
    private Object threadSync = new Object();

    private Ajp13Logger logger = new Ajp13Logger();

    /**
     * The service which which the connector is associated
     */
    private Service service = null;

    private String secret = null;


    /**
     * Tomcat authentication flag. If true, the authnetication is done by
     * Tomcat, otherwise, it is done by the native webserver.
     */
    private boolean tomcatAuthentication = true;


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


    /**
     * Return the connection timeout for this Connector.
     */
    public int getConnectionTimeout() {

	return (connectionTimeout);

    }


    /**
     * Set the connection timeout for this Connector.
     *
     * @param connectionTimeout The new connection timeout
     */
    public void setConnectionTimeout(int connectionTimeout) {

	this.connectionTimeout = connectionTimeout;

    }

    /**
     * Return the connection linger settings for this Connector.
     */
    public int getConnectionLinger() {

	return (connectionLinger);

    }


    /**
     * Set the connection linger for this Connector.
     *
     * @param connectionLinger The new connection linger
     */
    public void setConnectionLinger(int connectionLinger) {

	this.connectionLinger = connectionLinger;

    }

    public void setSecret( String s ) {
        secret=s;
    }

    public String getSecret() {
        return secret;
    }
    

    /**
     * Return the accept count for this Connector.
     */
    public int getAcceptCount() {

	return (acceptCount);

    }


    /**
     * Set the accept count for this Connector.
     *
     * @param count The new accept count
     */
    public void setAcceptCount(int count) {

	this.acceptCount = count;

    }



    /**
     * Return the bind IP address for this Connector.
     */
    public String getAddress() {

	return (this.address);

    }


    /**
     * Set the bind IP address for this Connector.
     *
     * @param address The bind IP address
     */
    public void setAddress(String address) {

	this.address = address;

    }


    /**
     * Is this connector available for processing requests?
     */
    public boolean isAvailable() {

	return (started);

    }


    /**
     * Return the input buffer size for this Connector.
     */
    public int getBufferSize() {

	return (this.bufferSize);

    }


    /**
     * Set the input buffer size for this Connector.
     *
     * @param bufferSize The new input buffer size.
     */
    public void setBufferSize(int bufferSize) {

	this.bufferSize = bufferSize;

    }


    /**
     * Return the Container used for processing requests received by this
     * Connector.
     */
    public Container getContainer() {

	return (container);

    }


    /**
     * Set the Container used for processing requests received by this
     * Connector.
     *
     * @param container The new Container to use
     */
    public void setContainer(Container container) {

	this.container = container;

    }


    /**
     * Return the current number of processors that have been created.
     */
    public int getCurProcessors() {

	return (curProcessors);

    }


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

        return (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 "enable DNS lookups" flag.
     */
    public boolean getEnableLookups() {
        return this.enableLookups;
    }

    /**
     * Set the "enable DNS lookups" flag.
     *
     * @param enableLookups The new "enable DNS lookups" flag value
     */
    public void setEnableLookups(boolean enableLookups) {
        this.enableLookups = enableLookups;
    }

    /**
     * Return the port number to which a request should be redirected if
     * it comes in on a non-SSL port and is subject to a security constraint
     * with a transport guarantee that requires SSL.
     */
    public int getRedirectPort() {
        return this.redirectPort;
    }


    /**
     * Set the redirect port number.
     *
     * @param redirectPort The redirect port number (non-SSL to SSL)
     */
    public void setRedirectPort(int redirectPort) {
        this.redirectPort = redirectPort;
    }

    /**
     * Return the server socket factory used by this Container.
     */
    public ServerSocketFactory getFactory() {

        if (this.factory == null) {
            synchronized (this) {
                this.factory = new DefaultServerSocketFactory();
            }
        }
        return (this.factory);

    }


    /**
     * Set the server socket factory used by this Container.
     *
     * @param factory The new server socket factory
     */
    public void setFactory(ServerSocketFactory factory) {

        this.factory = factory;

    }


    /**
     * Return descriptive information about this Connector implementation.
     */
    public String getInfo() {

	return (info);

    }


    /**
     * Return the minimum number of processors to start at initialization.
     */
    public int getMinProcessors() {

	return (minProcessors);

    }


    /**
     * Set the minimum number of processors to start at initialization.
     *
     * @param minProcessors The new minimum processors
     */
    public void setMinProcessors(int minProcessors) {

	this.minProcessors = minProcessors;