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/*
* Copyright (c) 2000, 2025, 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.
*/
/*
* @test
* @bug 4274061
* @summary Tests that Transferable.getTransferData() and
* SelectionOwner.lostOwnership is not called on Toolkit thread.
* @key headful
* @library /test/lib
* @run main ClipboardSecurity
*/
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class ClipboardSecurity {
static Clipboard clip = null;
public static final CountDownLatch latch = new CountDownLatch(1);
public static volatile boolean hasError = false;
public static void main(String[] args) throws Exception {
if (args.length == 0) {
ClipboardSecurity clipboardSecurity = new ClipboardSecurity();
clipboardSecurity.start();
return;
}
try {
clip = Toolkit.getDefaultToolkit().getSystemClipboard();
if ( clip == null ) {
throw (new RuntimeException("Clipboard is null"));
}
Transferable data = clip.getContents(null);
if ( data == null ) {
throw (new RuntimeException("Data is null"));
}
System.out.println("Clipboard contents: " + data);
// First check - getTransferData
try {
String contData =
(String) data.getTransferData(DataFlavor.stringFlavor);
} catch (UnsupportedFlavorException | IOException exc) {
throw(new RuntimeException("Couldn't get transfer data - "
+ exc.getMessage()));
}
// Second check - lostOwnership
MyClass clipData = new MyClass("clipbard test data");
clip.setContents(clipData, clipData);
System.out.println("exit 0");
System.exit(0);
} catch (RuntimeException exc) {
System.err.println(exc.getMessage());
System.out.println("exit 2");
System.exit(2);
}
}
public void start() throws Exception {
clip = Toolkit.getDefaultToolkit().getSystemClipboard();
if (clip == null) {
throw (new RuntimeException("Clipboard is null"));
}
MyClass clipData = new MyClass("clipboard test data");
clip.setContents(clipData, clipData);
ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(
ClipboardSecurity.class.getName(),
"child"
);
Process process = ProcessTools.startProcess("Child", pb);
OutputAnalyzer outputAnalyzer = new OutputAnalyzer(process);
if (!process.waitFor(15, TimeUnit.SECONDS)) {
process.destroyForcibly();
throw new TimeoutException("Timed out waiting for Child");
}
System.out.println("WAIT COMPLETE");
outputAnalyzer.shouldHaveExitValue(0);
if (!latch.await(10, TimeUnit.SECONDS)) {
throw new RuntimeException("timed out");
}
if (hasError) {
throw new RuntimeException("Detected call on Toolkit thread");
}
System.out.println("Passed.");
}
}
class MyClass extends StringSelection implements ClipboardOwner {
MyClass(String title) {
super(title);
}
private void checkIsCorrectThread(String reason) {
System.out.println("Checking " + reason + " for thread "
+ Thread.currentThread().getName());
String name = Thread.currentThread().getName();
if (name.equals("AWT-Windows") || name.equals("AWT-Motif")) {
ClipboardSecurity.hasError = true;
System.err.println(reason + " is called on Toolkit thread!");
}
}
public void lostOwnership(Clipboard clip, Transferable cont) {
checkIsCorrectThread("lostOwnership");
ClipboardSecurity.latch.countDown();
System.out.println("lost ownership on "
+ Thread.currentThread().getName() + " thread");
}
public Object getTransferData(DataFlavor flav)
throws UnsupportedFlavorException, IOException {
System.out.println("getTransferData on "
+ Thread.currentThread().getName() + " thread");
checkIsCorrectThread("getTransferData");
return super.getTransferData(flav);
}
}
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