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/javax/swing/JTableHeader/TableHeaderRendererTest.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2022, 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.Component;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+import javax.swing.JTable;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
+import javax.swing.table.AbstractTableModel;
+import javax.swing.table.JTableHeader;
+import javax.swing.table.TableCellRenderer;
+
+/*
+ * @test
+ * @bug 6429812
+ * @summary Test to check if table header is painted without NPE
+ * @run main TableHeaderRendererTest
+ */
+
+public class TableHeaderRendererTest {
+    public static void main(String[] args) throws Exception {
+        SwingUtilities.invokeAndWait(TableHeaderRendererTest::runTest);
+        System.out.println("Test Passed");
+    }
+
+    private static void runTest() {
+        UIManager.LookAndFeelInfo[] lookAndFeel = UIManager.getInstalledLookAndFeels();
+        for (UIManager.LookAndFeelInfo look : lookAndFeel) {
+            System.out.println(look.getName() + " LookAndFeel Set");
+            setLookAndFeel(look.getClassName());
+            // initialize should not throw NullPointerException
+            initialize();
+        }
+    }
+
+    //Initialize the table and paint it to Buffered Image
+    static void initialize() {
+        JTable table = new JTable(new SampleTableModel());
+
+        final JTableHeader header = table.getTableHeader();
+        TableCellRenderer renderer = new DecoratedHeaderRenderer(header.getDefaultRenderer());
+        header.setDefaultRenderer(renderer);
+
+        table.updateUI();
+
+        Dimension size = header.getPreferredSize();
+        header.setSize(size);
+        BufferedImage img = new BufferedImage(size.width, size.height,
+                BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g2d = img.createGraphics();
+        try {
+            header.paint(g2d);
+        } finally {
+            g2d.dispose();
+        }
+    }
+
+    //Table Model data
+    static class SampleTableModel extends AbstractTableModel {
+        @Override
+        public int getRowCount() {
+            return 10;
+        }
+        @Override
+        public int getColumnCount() {
+            return 10;
+        }
+        @Override
+        public Object getValueAt(int rowIndex, int columnIndex) {
+            return ""+rowIndex + " X " + columnIndex;
+        }
+    }
+
+    //Table header renderer
+    static class DecoratedHeaderRenderer implements TableCellRenderer {
+        public DecoratedHeaderRenderer(TableCellRenderer render) {
+            this.render = render;
+        }
+
+        private final TableCellRenderer render;
+
+        @Override
+        public Component getTableCellRendererComponent(JTable table,
+                                                       Object value, boolean isSelected,
+                                                       boolean hasFocus, int row, int column) {
+            return render.getTableCellRendererComponent(
+                    table, value, isSelected, hasFocus, row, column);
+        }
+    }
+
+    private static void setLookAndFeel(String laf) {
+        try {
+            UIManager.setLookAndFeel(laf);
+        } catch (UnsupportedLookAndFeelException ignored) {
+            System.out.println("Unsupported L&F: " + laf);
+        } catch (ClassNotFoundException | InstantiationException
+                | IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}