| /* |
| * Copyright (c) 2000, 2013, 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 sun.awt.datatransfer; |
| |
| import java.awt.datatransfer.DataFlavor; |
| import java.awt.datatransfer.Transferable; |
| import java.awt.datatransfer.UnsupportedFlavorException; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.ObjectStreamClass; |
| import java.io.OutputStream; |
| import java.lang.reflect.Modifier; |
| import java.lang.reflect.Proxy; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| |
| /** |
| * Proxies for another Transferable so that Serializable objects are never |
| * returned directly by DnD or the Clipboard. Instead, a new instance of the |
| * object is returned. |
| * |
| * @author Lawrence P.G. Cable |
| * @author David Mendenhall |
| * |
| * @since 1.4 |
| */ |
| public class TransferableProxy implements Transferable { |
| public TransferableProxy(Transferable t, boolean local) { |
| transferable = t; |
| isLocal = local; |
| } |
| public DataFlavor[] getTransferDataFlavors() { |
| return transferable.getTransferDataFlavors(); |
| } |
| public boolean isDataFlavorSupported(DataFlavor flavor) { |
| return transferable.isDataFlavorSupported(flavor); |
| } |
| public Object getTransferData(DataFlavor df) |
| throws UnsupportedFlavorException, IOException |
| { |
| Object data = transferable.getTransferData(df); |
| |
| // If the data is a Serializable object, then create a new instance |
| // before returning it. This insulates applications sharing DnD and |
| // Clipboard data from each other. |
| if (data != null && isLocal && df.isFlavorSerializedObjectType()) { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| |
| ClassLoaderObjectOutputStream oos = |
| new ClassLoaderObjectOutputStream(baos); |
| oos.writeObject(data); |
| |
| ByteArrayInputStream bais = |
| new ByteArrayInputStream(baos.toByteArray()); |
| |
| try { |
| ClassLoaderObjectInputStream ois = |
| new ClassLoaderObjectInputStream(bais, |
| oos.getClassLoaderMap()); |
| data = ois.readObject(); |
| } catch (ClassNotFoundException cnfe) { |
| throw (IOException)new IOException().initCause(cnfe); |
| } |
| } |
| |
| return data; |
| } |
| |
| protected final Transferable transferable; |
| protected final boolean isLocal; |
| } |
| |
| final class ClassLoaderObjectOutputStream extends ObjectOutputStream { |
| private final Map<Set<String>, ClassLoader> map = |
| new HashMap<Set<String>, ClassLoader>(); |
| |
| ClassLoaderObjectOutputStream(OutputStream os) throws IOException { |
| super(os); |
| } |
| |
| protected void annotateClass(final Class<?> cl) throws IOException { |
| ClassLoader classLoader = AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return cl.getClassLoader(); |
| } |
| }); |
| |
| Set<String> s = new HashSet<String>(1); |
| s.add(cl.getName()); |
| |
| map.put(s, classLoader); |
| } |
| protected void annotateProxyClass(final Class<?> cl) throws IOException { |
| ClassLoader classLoader = AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return cl.getClassLoader(); |
| } |
| }); |
| |
| Class<?>[] interfaces = cl.getInterfaces(); |
| Set<String> s = new HashSet<String>(interfaces.length); |
| for (int i = 0; i < interfaces.length; i++) { |
| s.add(interfaces[i].getName()); |
| } |
| |
| map.put(s, classLoader); |
| } |
| |
| Map<Set<String>, ClassLoader> getClassLoaderMap() { |
| return new HashMap<>(map); |
| } |
| } |
| |
| final class ClassLoaderObjectInputStream extends ObjectInputStream { |
| private final Map<Set<String>, ClassLoader> map; |
| |
| ClassLoaderObjectInputStream(InputStream is, |
| Map<Set<String>, ClassLoader> map) |
| throws IOException { |
| super(is); |
| if (map == null) { |
| throw new NullPointerException("Null map"); |
| } |
| this.map = map; |
| } |
| |
| protected Class<?> resolveClass(ObjectStreamClass classDesc) |
| throws IOException, ClassNotFoundException { |
| String className = classDesc.getName(); |
| |
| Set<String> s = new HashSet<String>(1); |
| s.add(className); |
| |
| ClassLoader classLoader = map.get(s); |
| if (classLoader != null) { |
| return Class.forName(className, false, classLoader); |
| } else { |
| return super.resolveClass(classDesc); |
| } |
| } |
| |
| protected Class<?> resolveProxyClass(String[] interfaces) |
| throws IOException, ClassNotFoundException { |
| |
| Set<String> s = new HashSet<String>(interfaces.length); |
| for (int i = 0; i < interfaces.length; i++) { |
| s.add(interfaces[i]); |
| } |
| |
| ClassLoader classLoader = map.get(s); |
| if (classLoader == null) { |
| return super.resolveProxyClass(interfaces); |
| } |
| |
| // The code below is mostly copied from the superclass. |
| ClassLoader nonPublicLoader = null; |
| boolean hasNonPublicInterface = false; |
| |
| // define proxy in class loader of non-public interface(s), if any |
| Class<?>[] classObjs = new Class<?>[interfaces.length]; |
| for (int i = 0; i < interfaces.length; i++) { |
| Class<?> cl = Class.forName(interfaces[i], false, classLoader); |
| if ((cl.getModifiers() & Modifier.PUBLIC) == 0) { |
| if (hasNonPublicInterface) { |
| if (nonPublicLoader != cl.getClassLoader()) { |
| throw new IllegalAccessError( |
| "conflicting non-public interface class loaders"); |
| } |
| } else { |
| nonPublicLoader = cl.getClassLoader(); |
| hasNonPublicInterface = true; |
| } |
| } |
| classObjs[i] = cl; |
| } |
| try { |
| @SuppressWarnings("deprecation") |
| Class<?> proxyClass = Proxy.getProxyClass(hasNonPublicInterface ? |
| nonPublicLoader : classLoader, |
| classObjs); |
| return proxyClass; |
| } catch (IllegalArgumentException e) { |
| throw new ClassNotFoundException(null, e); |
| } |
| } |
| } |