| /* |
| * Copyright (c) 2008, 2017, 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.xml.internal.ws.model; |
| |
| import java.lang.reflect.Field; |
| import javax.xml.ws.WebServiceException; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.net.URL; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| import java.security.ProtectionDomain; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * A {@link ClassLoader} used to "inject" wrapper and exception bean classes |
| * into the VM. |
| * |
| * @author Jitendra kotamraju |
| */ |
| final class Injector { |
| |
| private static final Logger LOGGER = Logger.getLogger(Injector.class.getName()); |
| |
| private static Method defineClass; |
| private static Method resolveClass; |
| private static Method getPackage; |
| private static Method definePackage; |
| private static Object U; |
| |
| static { |
| try { |
| Method[] m = AccessController.doPrivileged( |
| new PrivilegedAction<Method[]>() { |
| @Override |
| public Method[] run() { |
| return new Method[]{ |
| getMethod(ClassLoader.class, "defineClass", String.class, byte[].class, Integer.TYPE, Integer.TYPE), |
| getMethod(ClassLoader.class, "resolveClass", Class.class), |
| getMethod(ClassLoader.class, "getPackage", String.class), |
| getMethod(ClassLoader.class, "definePackage", |
| String.class, String.class, String.class, String.class, |
| String.class, String.class, String.class, URL.class) |
| }; |
| } |
| } |
| ); |
| defineClass = m[0]; |
| resolveClass = m[1]; |
| getPackage = m[2]; |
| definePackage = m[3]; |
| |
| } catch (Throwable t) { |
| try { |
| U = AccessController.doPrivileged(new PrivilegedExceptionAction() { |
| @Override |
| public Object run() throws Exception { |
| Class u = Class.forName("sun.misc.Unsafe"); |
| Field theUnsafe = u.getDeclaredField("theUnsafe"); |
| theUnsafe.setAccessible(true); |
| return theUnsafe.get(null); |
| } |
| }); |
| defineClass = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() { |
| @Override |
| public Method run() throws Exception { |
| try { |
| return U.getClass().getMethod("defineClass", |
| new Class[]{String.class, |
| byte[].class, |
| Integer.TYPE, |
| Integer.TYPE, |
| ClassLoader.class, |
| ProtectionDomain.class}); |
| } catch (NoSuchMethodException | SecurityException ex) { |
| throw ex; |
| } |
| } |
| }); |
| } catch (SecurityException | PrivilegedActionException ex) { |
| Logger.getLogger(Injector.class.getName()).log(Level.SEVERE, null, ex); |
| WebServiceException we = new WebServiceException(ex); |
| we.addSuppressed(t); |
| throw we; |
| } |
| } |
| } |
| |
| private static Method getMethod(final Class<?> c, final String methodname, final Class<?>... params) { |
| try { |
| Method m = c.getDeclaredMethod(methodname, params); |
| m.setAccessible(true); |
| return m; |
| } catch (NoSuchMethodException e) { |
| // impossible |
| throw new NoSuchMethodError(e.getMessage()); |
| } |
| } |
| |
| static synchronized Class inject(ClassLoader cl, String className, byte[] image) { |
| // To avoid race conditions let us check if the classloader |
| // already contains the class |
| try { |
| return cl.loadClass(className); |
| } catch (ClassNotFoundException e) { |
| // nothing to do |
| } |
| try { |
| if (definePackage == null) { |
| return (Class) defineClass.invoke(U, className.replace('/', '.'), image, 0, image.length, cl, Injector.class.getProtectionDomain()); |
| } |
| int packIndex = className.lastIndexOf('.'); |
| if (packIndex != -1) { |
| String pkgname = className.substring(0, packIndex); |
| // Check if package already loaded. |
| Package pkg = (Package) getPackage.invoke(cl, pkgname); |
| if (pkg == null) { |
| definePackage.invoke(cl, pkgname, null, null, null, null, null, null, null); |
| } |
| } |
| |
| Class c = (Class) defineClass.invoke(cl, className.replace('/', '.'), image, 0, image.length); |
| resolveClass.invoke(cl, c); |
| return c; |
| } catch (IllegalAccessException | InvocationTargetException e) { |
| if (LOGGER.isLoggable(Level.FINE)) { |
| LOGGER.log(Level.FINE, "Unable to inject " + className, e); |
| } |
| throw new WebServiceException(e); |
| } |
| } |
| |
| } |