| /* |
| * Copyright (c) 2016, 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. |
| */ |
| |
| import java.io.DataInputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.util.jar.JarFile; |
| import java.util.zip.ZipEntry; |
| |
| public class CustomLoader extends ClassLoader { |
| private static PrintStream out = System.out; |
| public static ClassLoader myself; |
| public static ClassLoader agentClassLoader; |
| public static boolean failed = true; |
| |
| public CustomLoader(ClassLoader classLoader) { |
| super(classLoader); |
| myself = this; |
| } |
| |
| @Override |
| public Class<?> loadClass(String name) throws ClassNotFoundException { |
| out.println("CustomLoader: loading class: " + name); |
| if (name.equals("Agent")) { |
| Class c = null; |
| try { |
| byte[] buf = locateBytes(); |
| c = defineClass(name, buf, 0, buf.length); |
| } catch (IOException ex) { |
| throw new ClassNotFoundException(ex.getMessage()); |
| } |
| resolveClass(c); |
| out.println("CustomLoader.loadClass after resolveClass: " + name + |
| "; Class: " + c + "; ClassLoader: " + c.getClassLoader()); |
| return c; |
| } |
| return super.loadClass(name); |
| } |
| |
| private byte[] locateBytes() throws IOException { |
| try { |
| JarFile jar = new JarFile("Agent.jar"); |
| InputStream is = jar.getInputStream(jar.getEntry("Agent.class")); |
| int len = is.available(); |
| byte[] buf = new byte[len]; |
| DataInputStream in = new DataInputStream(is); |
| in.readFully(buf); |
| return buf; |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| throw new IOException("Test failed due to IOException!"); |
| } |
| } |
| |
| void appendToClassPathForInstrumentation(String path) { |
| out.println("CustomLoader.appendToClassPathForInstrumentation: " + |
| this + ", jar: " + path); |
| failed = false; |
| } |
| } |