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/Component/Displayable.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 1998, 2023, 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.BorderLayout;
+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.Label;
+import java.awt.Panel;
+
+/*
+ * @test
+ * @key headful
+ * @summary automated test for "displayable" property on Component
+ */
+
+public class Displayable extends Panel {
+    Label status = new Label("Displayable Test started...");
+
+    public void init() {
+        setLayout(new BorderLayout());
+        add("South", status);
+
+        LightDisplayable light = new LightDisplayable();
+        shouldNotBeDisplayable(light, "before added to container ");
+
+        HeavyDisplayable heavy = new HeavyDisplayable();
+        shouldNotBeDisplayable(heavy, "before added to container ");
+
+        add("West", light);
+        add("East", heavy);
+
+        statusMessage("Displayable test completed successfully.");
+    }
+
+    protected void addImpl(Component child, Object constraints, int index) {
+        super.addImpl(child, constraints, index);
+        if (isDisplayable()) {
+            shouldBeDisplayable(child, "after added to displayable container ");
+        } else {
+            shouldNotBeDisplayable(child, "after added to undisplayable container ");
+        }
+    }
+
+    public void remove(Component child) {
+        super.remove(child);
+        shouldNotBeDisplayable(child, "after removed from displayable container ");
+    }
+
+    public void statusMessage(String msg) {
+        status.setText(msg);
+        status.invalidate();
+        validate();
+    }
+
+    public static void shouldNotBeDisplayable(Component c, String why) {
+        if (c.isDisplayable()) {
+            throw new RuntimeException("Component is displayable "+why+c.getName());
+        }
+    }
+
+    public static void shouldBeDisplayable(Component c, String why) {
+        if (!c.isDisplayable()) {
+            throw new RuntimeException("Component is NOT displayable "+why+c.getName());
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        EventQueue.invokeAndWait(() -> {
+            Frame f = new Frame();
+            try {
+                Displayable test = new Displayable();
+                test.init();
+                f.add("North", test);
+                f.pack();
+            } finally {
+                f.dispose();
+            }
+        });
+    }
+}
+
+class LightDisplayable extends Component {
+
+    public Dimension getPreferredSize() {
+        return new Dimension(50,50);
+    }
+
+    public void paint(Graphics g) {
+        Dimension size = getSize();
+        g.setColor(Color.blue);
+        g.fillRect(0, 0, size.width, size.height);
+        super.paint(g);
+    }
+
+    public void addNotify() {
+        Displayable.shouldNotBeDisplayable(this, "before addNotify ");
+        super.addNotify();
+        Displayable.shouldBeDisplayable(this, "after addNotify ");
+    }
+
+    public void removeNotify() {
+        Displayable.shouldBeDisplayable(this, "before removeNotify ");
+        super.removeNotify();
+        Displayable.shouldNotBeDisplayable(this, "after removeNotify ");
+    }
+}
+
+class HeavyDisplayable extends Panel {
+
+    public Dimension getPreferredSize() {
+        return new Dimension(50, 50);
+    }
+
+    public void paint(Graphics g) {
+        Dimension size = getSize();
+        g.setColor(Color.black);
+        g.fillRect(0, 0, size.width, size.height);
+        super.paint(g);
+    }
+
+    public void addNotify() {
+        Displayable.shouldNotBeDisplayable(this, "before addNotify ");
+        super.addNotify();
+        Displayable.shouldBeDisplayable(this, "after addNotify ");
+    }
+
+    public void removeNotify() {
+        Displayable.shouldBeDisplayable(this, "before removeNotify ");
+        super.removeNotify();
+        Displayable.shouldNotBeDisplayable(this, "after removeNotify ");
+    }
+}