disko.utils.DiscoProxySettings.java Source code

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Here is the source code for disko.utils.DiscoProxySettings.java

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/*******************************************************************************
 * Copyright (c) 2005, Kobrix Software, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Borislav Iordanov - initial API and implementation
 *     Murilo Saraiva de Queiroz - initial API and implementation
 ******************************************************************************/
package disko.utils;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
import java.net.URLConnection;

import org.apache.commons.codec.binary.Base64;

/**
 * 
 * <p>
 * Configure proxy settings for URL access within Disco. This is a simple
 * class holding global proxy settings that must be configured by whatever 
 * main program is calling the framework.
 * </p>
 *
 * @author Borislav Iordanov
 *
 */
public class DiscoProxySettings {
    public static String proxyHost = null;
    public static int proxyPort = 80;
    public static String proxyUser = null;
    public static String proxyPassword = null;
    public static Proxy.Type proxyType = Proxy.Type.HTTP;

    /**
     * 
     * <p>
     * Convenience method to open a URL connection by using the
     * proxy settings. If proxyHost is null, the default is to  just
     * call <code>url.openConnection</code>.
     * </p>
     *
     * @param url
     * @return
     */
    public static URLConnection newConnection(URL url) throws IOException {
        URLConnection connection;
        String externalForm = url.toExternalForm();
        url = new URL(externalForm.replace(" ", "%20"));
        if (DiscoProxySettings.proxyHost != null) {
            connection = url.openConnection(new Proxy(Proxy.Type.HTTP,
                    new InetSocketAddress(DiscoProxySettings.proxyHost, DiscoProxySettings.proxyPort)));
            if (DiscoProxySettings.proxyUser != null) {
                String enc = new String(Base64.encodeBase64(
                        new String(DiscoProxySettings.proxyUser + ":" + DiscoProxySettings.proxyPassword)
                                .getBytes()));
                connection.setRequestProperty("Proxy-Authorization", "Basic " + enc);
            }
        } else
            connection = url.openConnection();
        return connection;
    }
}