DefaultAJPRequestHandler.java

/*
 * This file is part of the OWASP Proxy, a free intercepting proxy library.
 * Copyright (C) 2008-2010 Rogan Dawes <rogan@dawes.za.net>
 * 
 * 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.
 * 
 * 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., 
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

package org.owasp.proxy.ajp;

import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;

import org.owasp.proxy.daemon.ServerGroup;
import org.owasp.proxy.http.MessageFormatException;
import org.owasp.proxy.http.StreamingRequest;
import org.owasp.proxy.http.StreamingResponse;
import org.owasp.proxy.http.server.HttpRequestHandler;
import org.owasp.proxy.io.TimingInputStream;

public class DefaultAJPRequestHandler implements AJPRequestHandler,
        HttpRequestHandler {

    private ServerGroup serverGroup = null;

    private InetSocketAddress target;

    private AJPProperties properties = new AJPProperties();

    private ThreadLocal<AJPClient> client = new ThreadLocal<AJPClient>() {

        /*
         * (non-Javadoc)
         * 
         * @see java.lang.ThreadLocal#initialValue()
         */
        @Override
        protected AJPClient initialValue() {
            return createClient();
        }

    };

    public DefaultAJPRequestHandler() {
    }

    /**
     * @return the properties
     */
    public AJPProperties getProperties() {
        return properties;
    }

    /**
     * @param properties
     *            the properties to set
     */
    public void setProperties(AJPProperties properties) {
        this.properties = properties;
    }

    public void setServerGroup(ServerGroup serverGroup) {
        this.serverGroup = serverGroup;
    }

    /**
     * @return the target
     */
    public InetSocketAddress getTarget() {
        return target;
    }

    /**
     * @param target
     *            the target to set
     */
    public void setTarget(InetSocketAddress target) {
        this.target = target;
    }

    protected AJPClient createClient() {
        return new AJPClient() {

            /*
             * (non-Javadoc)
             * 
             * @see org.owasp.httpclient.Client#checkLoop(java.net.SocketAddress)
             */
            @Override
            protected void validateTarget(SocketAddress target)
                    throws IOException {
                if (serverGroup != null && target instanceof InetSocketAddress
                        && serverGroup.wouldAccept((InetSocketAddress) target))
                    throw new IOException("Loop detected");
            }

        };
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.owasp.proxy.daemon.HttpRequestHandler#dispose()
     */
    public void dispose() throws IOException {
        client.get().close();
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.owasp.ajp.AJPRequestHandler#handleRequest(java.net.InetAddress, org.owasp.ajp.AJPRequest)
     */
    public StreamingResponse handleRequest(InetAddress source,
            AJPRequest request) throws IOException, MessageFormatException {
        return handleRequest(source, (StreamingRequest) request, false);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.owasp.proxy.daemon.HttpRequestHandler#handleRequest(java.net.InetAddress ,
     * org.owasp.httpclient.StreamingRequest)
     */
    public StreamingResponse handleRequest(InetAddress source,
            StreamingRequest request, boolean isContinue) throws IOException,
            MessageFormatException {
        AJPClient client = this.client.get();
        client.setProperties(new AJPProperties(properties));

        if (!client.isConnected())
            client.connect(target);

        if (isContinue) {
            throw new RuntimeException("AJP does not support Expect: continue");
        } else {
            StreamingResponse response = client.fetchResponse(request);
            request.setTime(client.getRequestTime());
            response.setHeaderTime(client.getResponseHeaderTime());
            InputStream content = response.getContent();
            if (content != null)
                content = new TimingInputStream(content, response);
            response.setContent(content);
            return response;
        }
    }

}