com.sun.webkit.network.URLs Maven / Gradle / Ivy
/*
* Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.webkit.network;
import java.net.MalformedURLException;
import java.net.NetPermission;
import java.net.URL;
import java.net.URLStreamHandler;
import java.security.AccessController;
import java.security.Permission;
import java.security.PrivilegedAction;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* A collection of static methods for URL creation.
*/
public final class URLs {
/**
* The mapping between WebPane-specific protocol names and their
* respective handlers.
*/
private static final Map handlerMap;
static {
Map map =
new HashMap(2);
map.put("about", new com.sun.webkit.network.about.Handler());
map.put("data", new com.sun.webkit.network.data.Handler());
handlerMap = Collections.unmodifiableMap(map);
}
private static final Permission streamHandlerPermission =
new NetPermission("specifyStreamHandler");
/**
* The private default constructor. Ensures non-instantiability.
*/
private URLs() {
throw new AssertionError();
}
/**
* Creates a {@code URL} object from the {@code String} representation.
* This method is equivalent to the {@link URL#URL(String)} constructor
* with the additional support for WebPane-specific protocol handlers.
* @param spec the {@code String} to parse as a {@code URL}.
* @throws MalformedURLException if the string specifies an unknown
* protocol.
*/
public static URL newURL(String spec) throws MalformedURLException {
return newURL(null, spec);
}
/**
* Creates a URL by parsing the given spec within a specified context.
* This method is equivalent to the {@link URL#URL(URL,String)}
* constructor with the additional support for WebPane-specific protocol
* handlers.
* @param context the context in which to parse the specification.
* @param spec the {@code String} to parse as a {@code URL}.
* @throws MalformedURLException if no protocol is specified, or an
* unknown protocol is found.
*/
public static URL newURL(final URL context, final String spec)
throws MalformedURLException
{
try {
// Try the standard protocol handler selection procedure
return new URL(context, spec);
} catch (MalformedURLException ex) {
// Try WebPane-specific protocol handler, if any
int colonPosition = spec.indexOf(':');
final URLStreamHandler handler = (colonPosition != -1) ?
handlerMap.get(spec.substring(0, colonPosition).toLowerCase()) :
null;
if (handler == null) throw ex;
try {
// We should be able to specify one of our stream handlers for the URL
// when running as an applet or a web start app.
return AccessController.doPrivileged((PrivilegedAction) () -> {
try {
return new URL(context, spec, handler);
} catch (MalformedURLException muex) {
throw new RuntimeException(muex);
}
}, null, streamHandlerPermission);
} catch (RuntimeException re) {
if (re.getCause() instanceof MalformedURLException) {
throw (MalformedURLException)re.getCause();
}
throw re;
}
}
}
}