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/*******************************************************************************
* Copyright (c) 2014, 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.internal.base.util;
import java.io.IOException;
import java.io.InputStream;
import java.net.Authenticator;
import java.net.InetSocketAddress;
import java.net.PasswordAuthentication;
import java.net.Proxy;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.internal.net.ProxyManager;
import org.eclipse.core.net.proxy.IProxyData;
import org.eclipse.core.net.proxy.IProxyService;
public class ProxyUtil {
public static boolean isAuthConnSupported()
{
try {
Class.forName("org.eclipse.core.net.proxy.IProxyService"); //$NON-NLS-1$
return true;
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return false;
}
public static IProxyData getProxy(URL url)
{
if (!isAuthConnSupported())
return null;
IProxyService service = ProxyManager.getProxyManager();
IProxyData data[];
if (!service.isProxiesEnabled())
return null;
try {
URI uri = url.toURI();
if (shouldBypass(uri))
return null;
data = service.select(uri);
} catch (URISyntaxException e) {
e.printStackTrace();
return null;
}
if (data.length==0)
return null;
return data[0];
}
public static boolean shouldBypass(URI uri)
{
String host = uri.getHost();
if (host==null)
return true;
List<String> hosts = getProxyBypassHosts();
if (hosts.contains(host))
return true;
if ((host.equals("localhost") || host.equals("127.0.0.1")) && hosts.contains("<local>")) //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
return true;
return false;
}
public static List<String> getProxyBypassHosts()
{
List<String> hosts = new ArrayList<>();
if (!isAuthConnSupported())
return hosts;
IProxyService service = ProxyManager.getProxyManager();
String manuals[] = service.getNonProxiedHosts();
String natives[] = null;
if (service instanceof ProxyManager)
natives = ((ProxyManager)service).getNativeNonProxiedHosts();
for (int m=0;m<manuals.length;m++)
hosts.add(manuals[m]);
if (natives!=null)
for (int n=0;n<natives.length;n++)
hosts.add(natives[n]);
return hosts;
}
public static URLConnection getConnection(URL url) throws IOException
{
IProxyData data = getProxy(url);
if (data==null)
return url.openConnection();
if (data.isRequiresAuthentication())
Authenticator.setDefault(new ProxyAuthenticator(data.getUserId(),data.getPassword()));
else
Authenticator.setDefault(null);
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(data.getHost(), data.getPort()));
return url.openConnection(proxy);
}
public static InputStream getStream(URL url) throws IOException
{
return getConnection(url).getInputStream();
}
private static class ProxyAuthenticator extends Authenticator {
private String user, password;
public ProxyAuthenticator(String user, String password) {
this.user = user;
this.password = password;
}
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password.toCharArray());
}
}
}
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