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This module contains the Metro runtime code.
/*
* Copyright (c) 2008, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.model;
import java.lang.reflect.Field;
import jakarta.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() {
@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("jdk.internal.misc.Unsafe");
Field theUnsafe = u.getDeclaredField("theUnsafe");
theUnsafe.setAccessible(true);
return theUnsafe.get(null);
}
});
defineClass = AccessController.doPrivileged(new PrivilegedExceptionAction() {
@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);
}
}
}