/*
 * $HeadURL$
 * $Revision$
 * $Date$
 *
 * ====================================================================
 *
 *  Copyright 1999-2006 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * ====================================================================
 *
 * 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/>.
 *
 */

package org.apache.axis2.transport.http.server;

import java.io.IOException;

import org.apache.axis2.Constants;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.http.Header;
import org.apache.http.HeaderElement;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.protocol.HttpContext;

public class RequestSessionCookie implements HttpRequestInterceptor {

    public void process(final HttpRequest request, final HttpContext context) 
            throws HttpException, IOException {
        if (request == null) {
            throw new IllegalArgumentException("HTTP request may not be null");
        }
        if (context == null) {
            throw new IllegalArgumentException("HTTP context may not be null");
        }
        
        String sessionCookie = null;
        Header[] headers = request.getHeaders(HTTPConstants.HEADER_COOKIE);
        for (int i = 0; i < headers.length; i++) {
            HeaderElement[] elements = headers[i].getElements();
            for (int e = 0; e < elements.length; e++) {
                HeaderElement element = elements[e];
                if (Constants.SESSION_COOKIE.equalsIgnoreCase(element.getName())) {
                    sessionCookie = element.getValue();
                }
            }
        }
        context.setAttribute(HTTPConstants.COOKIE_STRING, sessionCookie);
    }
    
}