com.gargoylesoftware.htmlunit.html.applets.AppletClassLoader Maven / Gradle / Ivy
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A headless browser intended for use in testing web-based applications.
/*
* Copyright (c) 2002-2018 Gargoyle Software Inc.
*
* 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 com.gargoylesoftware.htmlunit.html.applets;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Enumeration;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.reflect.MethodUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.gargoylesoftware.htmlunit.WebResponse;
import com.gargoylesoftware.htmlunit.javascript.host.Window;
/**
* INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
* Class loader for loading applets.
*
* @author Marc Guillemot
* @author Ronald Brill
*/
public class AppletClassLoader extends URLClassLoader {
private static final Log LOG = LogFactory.getLog(AppletClassLoader.class);
private final StringBuilder info_ = new StringBuilder();
/**
* The constructor.
* @param window the window containing this applet
* @param parent the parent class loader for delegation
*/
public AppletClassLoader(final Window window, final ClassLoader parent) {
super(new URL[0], parent);
if (window.getWebWindow().getWebClient().getOptions().isUseInsecureSSL()) {
LOG.warn("AppletClassLoader: your WebClient accepts ssl connections without certificate checking."
+ " If you like to load applet archives from a SSL/HTTPS connection you have to configure"
+ " your jvm to accept untrusted certificate for SSL/HTTPS connections also.");
}
try {
loadOurNetscapeStuff("netscape.javascript.JSException");
final Class jsObjectClass = loadOurNetscapeStuff("netscape.javascript.JSObject");
MethodUtils.invokeExactStaticMethod(jsObjectClass, "setWindow", window);
}
catch (final Exception e) {
LOG.error(e.getMessage(), e);
}
}
/**
* Adds the jar file to the classpath for the applet.
* @param jarUrl the url of the jar file
*/
public void addArchiveToClassPath(final URL jarUrl) {
addURL(jarUrl);
info_.append(" Archive: " + jarUrl.toString() + "\n");
}
/**
* Adds the class defined by the WebResponse to the classpath for the applet.
* @param className the name of the class to load
* @param webResponse the web response
* @throws IOException in case of problem working with the response content
*/
public void addClassToClassPath(final String className, final WebResponse webResponse) throws IOException {
try (InputStream content = webResponse.getContentAsStream()) {
final byte[] bytes = IOUtils.toByteArray(content);
defineClass(className, bytes, 0, bytes.length);
}
info_.append(" Class: " + webResponse.getWebRequest().getUrl() + "\n");
}
private Class loadOurNetscapeStuff(final String classNane) throws IOException {
final String myNetscapeClassName = classNane.replace('.', '/') + ".class";
final Enumeration locations = getClass().getClassLoader().getResources(myNetscapeClassName);
final URL myLocation = getClass().getProtectionDomain().getCodeSource().getLocation();
while (locations.hasMoreElements()) {
final URL pos = locations.nextElement();
if (pos.toExternalForm().contains(myLocation.toExternalForm())) {
try (InputStream byteStream = pos.openStream()) {
final byte[] bytes = IOUtils.toByteArray(byteStream);
return defineClass(classNane, bytes, 0, bytes.length);
}
}
}
return null;
}
/**
* @return info about classpath
*/
public String info() {
return info_.toString();
}
}