org.jboss.vfs.protocol.AbstractLocalURLStreamHandler Maven / Gradle / Ivy
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* Copyright 2010, JBoss Inc., and individual contributors as indicated
* by the @authors tag.
*
* 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.
*/
package org.jboss.vfs.protocol;
import java.io.IOException;
import java.net.Proxy;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.util.HashSet;
import java.util.Set;
import org.jboss.vfs.VFSMessages;
/**
* Abstract URLStreamHandler that can be used as a base for other URLStreamHandlers that
* require the URL to be local.
*
* @author John Bailey
* @version $Revision$
*/
public abstract class AbstractLocalURLStreamHandler extends URLStreamHandler {
private static final Set locals;
static {
Set set = new HashSet();
set.add(null);
set.add("");
set.add("~");
set.add("localhost");
locals = set;
}
private static String toLower(String str) {
return str == null ? null : str.toLowerCase();
}
@Override
protected URLConnection openConnection(URL u, Proxy p) throws IOException {
return openConnection(u);
}
@Override
protected boolean hostsEqual(URL url1, URL url2) {
return locals.contains(toLower(url1.getHost())) && locals.contains(toLower(url2.getHost())) || super.hostsEqual(url1, url2);
}
protected void ensureLocal(URL url) throws IOException {
if (!locals.contains(toLower(url.getHost()))) {
throw VFSMessages.MESSAGES.remoteHostAccessNotSupportedForUrls(url.getProtocol());
}
}
}