| /* |
| * Copyright (c) 2012, 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. |
| * |
| * 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. |
| * |
| */ |
| |
| public class VictimClassLoader extends ClassLoader { |
| public static long counter = 0; |
| |
| private int which = (int) ++counter; |
| |
| protected VictimClassLoader() { |
| super(VictimClassLoader.class.getClassLoader()); |
| } |
| |
| protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException { |
| Class c; |
| if (!name.endsWith("Victim")) { |
| c = super.loadClass(name, resolve); |
| return c; |
| } |
| |
| c = findLoadedClass(name); |
| if (c != null) { |
| return c; |
| } |
| |
| byte[] buf = readClassFile(name); |
| c = defineClass(name, buf, 0, buf.length); |
| resolveClass(c); |
| |
| if (c.getClassLoader() != this) { |
| throw new AssertionError(); |
| } |
| |
| Test8003720.println("loaded " + c + "#" + System.identityHashCode(c) + " in " + c.getClassLoader()); |
| return c; |
| } |
| |
| static byte[] readClassFile(String name) { |
| try { |
| String rname = name.substring(name.lastIndexOf('.') + 1) + ".class"; |
| java.net.URL url = VictimClassLoader.class.getResource(rname); |
| Test8003720.println("found " + rname + " = " + url); |
| |
| java.net.URLConnection connection = url.openConnection(); |
| int contentLength = connection.getContentLength(); |
| byte[] buf = readFully(connection.getInputStream(), contentLength); |
| |
| return Asmator.fixup(buf); |
| } catch (java.io.IOException ex) { |
| throw new Error(ex); |
| } |
| } |
| |
| static byte[] readFully(java.io.InputStream in, int len) throws java.io.IOException { |
| // Warning here: |
| return sun.misc.IOUtils.readFully(in, len, true); |
| } |
| |
| public void finalize() { |
| Test8003720.println("Goodbye from " + this); |
| } |
| |
| public String toString() { |
| return "VictimClassLoader#" + which; |
| } |
| } |