undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

test/jdk/sun/java2d/X11SurfaceData/SharedMemoryPixmapsTest/SharedMemoryPixmapsTest.java

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2005, 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.
+ */
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.Robot;
+import java.awt.Toolkit;
+import java.awt.image.BufferedImage;
+import java.awt.image.VolatileImage;
+
+/*
+ *
+ *
+ * Tests that the use of shared memory pixmaps isn't broken:
+ * create a VolatileImage, fill it with red color, copy it to the screen
+ * make sure the pixels on the screen are red.
+ *
+ * Note that we force the use of shared memory pixmaps in the shell script.
+ */
+
+public class SharedMemoryPixmapsTest {
+    static final int IMAGE_SIZE = 200;
+    static volatile boolean show = false;
+    static volatile Frame testFrame;
+    static volatile TestComponent testComponent;
+
+    static void createUI() {
+        testFrame = new Frame("SharedMemoryPixmapsTest");
+        testComponent = new TestComponent();
+        testFrame.add(testComponent);
+        testFrame.setUndecorated(true);
+        testFrame.setResizable(false);
+        testFrame.pack();
+        testFrame.setLocationRelativeTo(null);
+        testFrame.setVisible(true);
+        testFrame.toFront();
+    }
+
+    public static void main(String[] args) throws Exception {
+        for (String s : args) {
+            if ("-show".equals(s)) {
+                show = true;
+            } else {
+                System.err.println("Usage: SharedMemoryPixmapsTest [-show]");
+            }
+        }
+        EventQueue.invokeAndWait(SharedMemoryPixmapsTest::createUI);
+        if (testRendering()) {
+            System.err.println("Test Passed");
+        } else {
+            System.err.println("Test Failed");
+        }
+        if (!show && testFrame != null) {
+            EventQueue.invokeAndWait(testFrame::dispose);
+        }
+    }
+
+    static boolean testRendering() throws Exception {
+        Robot r = new Robot();
+        r.waitForIdle();
+        r.delay(2000);
+        Point p = testComponent.getLocationOnScreen();
+        BufferedImage b =
+            r.createScreenCapture(new Rectangle(p, testComponent.getPreferredSize()));
+        for (int y = 20; y < b.getHeight() - 40; y++) {
+            for (int x = 20; x < b.getWidth() - 40; x++) {
+                if (b.getRGB(x, y) != Color.red.getRGB()) {
+                    System.err.println("Incorrect pixel at "
+                        + x + "x" + y + " : " +
+                        Integer.toHexString(b.getRGB(x, y)));
+                    if (show) {
+                        return false;
+                    }
+                    System.err.println("Test Failed");
+                    System.exit(1);
+                }
+            }
+        }
+        return true;
+    }
+
+    static class TestComponent extends Component {
+        VolatileImage vi = null;
+
+        void initVI() {
+            int res;
+            if (vi == null) {
+                res = VolatileImage.IMAGE_INCOMPATIBLE;
+            } else {
+                res = vi.validate(getGraphicsConfiguration());
+            }
+            if (res == VolatileImage.IMAGE_INCOMPATIBLE) {
+                if (vi != null) vi.flush();
+                vi = createVolatileImage(IMAGE_SIZE, IMAGE_SIZE);
+                vi.validate(getGraphicsConfiguration());
+                res = VolatileImage.IMAGE_RESTORED;
+            }
+            if (res == VolatileImage.IMAGE_RESTORED) {
+                Graphics vig = vi.getGraphics();
+                vig.setColor(Color.red);
+                vig.fillRect(0, 0, vi.getWidth(), vi.getHeight());
+                vig.dispose();
+            }
+        }
+
+        @Override
+        public synchronized void paint(Graphics g) {
+            do {
+                g.setColor(Color.green);
+                g.fillRect(0, 0, getWidth(), getHeight());
+
+                vi = null;
+                initVI();
+                g.drawImage(vi, 0, 0, null);
+            } while (vi.contentsLost());
+        }
+
+        @Override
+        public Dimension getPreferredSize() {
+            return new Dimension(IMAGE_SIZE, IMAGE_SIZE);
+        }
+    }
+}