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/java/awt/FullScreen/BufferStrategyExceptionTest/BufferStrategyExceptionTest.java

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+/*
+ * Copyright (c) 2006, 2018, 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
+ * @key headful
+ * @bug 6366813 6459844 8198613
+ * @summary Tests that no exception is thrown if a frame is resized just
+ * before we create a bufferStrategy
+ * @author Dmitri.Trembovetski area=FullScreen/BufferStrategy
+ * @run main/othervm BufferStrategyExceptionTest
+ */
+
+import java.awt.AWTException;
+import java.awt.BufferCapabilities;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.ImageCapabilities;
+import java.awt.image.BufferStrategy;
+import java.awt.image.BufferedImage;
+
+/**
+ * The purpose of this test is to make sure that we do not throw an
+ * IllegalStateException during the creation of BufferStrategy if
+ * a window has been resized just before our creation attempt.
+ *
+ * We test both windowed and fullscreen mode, although the exception has
+ * been observed in full screen mode only.
+ */
+public class BufferStrategyExceptionTest {
+    private static final int TEST_REPS = 20;
+
+    public static void main(String[] args) {
+        GraphicsDevice gd =
+            GraphicsEnvironment.getLocalGraphicsEnvironment().
+                getDefaultScreenDevice();
+
+        for (int i = 0; i < TEST_REPS; i++) {
+            TestFrame f = new TestFrame();
+            f.pack();
+            f.setSize(400, 400);
+            f.setVisible(true);
+            if (i % 2 == 0) {
+                gd.setFullScreenWindow(f);
+            }
+            // generate a resize event which will invalidate the peer's
+            // surface data and hopefully cause an exception during
+            // BufferStrategy creation in TestFrame.render()
+            Dimension d = f.getSize();
+            d.width -= 5; d.height -= 5;
+            f.setSize(d);
+
+            f.render();
+            gd.setFullScreenWindow(null);
+            sleep(100);
+            f.dispose();
+        }
+        System.out.println("Test passed.");
+    }
+
+    private static void sleep(long msecs) {
+        try {
+            Thread.sleep(msecs);
+        } catch (InterruptedException ex) {
+            ex.printStackTrace();
+        }
+    }
+
+    private static final BufferedImage bi =
+        new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
+
+    static class TestFrame extends Frame {
+        TestFrame() {
+            setUndecorated(true);
+            setIgnoreRepaint(true);
+            setSize(400, 400);
+        }
+
+        public void render() {
+            ImageCapabilities imgBackBufCap = new ImageCapabilities(true);
+            ImageCapabilities imgFrontBufCap = new ImageCapabilities(true);
+            BufferCapabilities bufCap =
+                new BufferCapabilities(imgFrontBufCap,
+                    imgBackBufCap, BufferCapabilities.FlipContents.COPIED);
+            try {
+
+                createBufferStrategy(2, bufCap);
+            } catch (AWTException ex) {
+                createBufferStrategy(2);
+            }
+
+            BufferStrategy bs = getBufferStrategy();
+            do {
+                Graphics g =  bs.getDrawGraphics();
+                g.setColor(Color.green);
+                g.fillRect(0, 0, getWidth(), getHeight());
+
+                g.setColor(Color.red);
+                g.drawString("Rendering test", 20, 20);
+
+                g.drawImage(bi, 50, 50, null);
+
+                g.dispose();
+                bs.show();
+            } while (bs.contentsLost()||bs.contentsRestored());
+        }
+    }
+
+}