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/FontClass/DrawStringWithInfiniteXform.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+/*
+ * @test
+ * @bug 8023213
+ * @summary Font/Text APIs should not crash/takes long time
+ *          if transform includes INFINITY
+ * @run main DrawStringWithInfiniteXform
+ */
+import java.awt.Font;
+import java.awt.Graphics2D;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.util.Timer;
+import java.util.TimerTask;
+
+public class DrawStringWithInfiniteXform {
+
+    volatile Timer timer;
+    volatile boolean done;
+
+    class ScheduleTask extends TimerTask {
+        public void run() {
+            System.out.println("Task running at " + System.currentTimeMillis());
+            System.out.flush();
+            synchronized (DrawStringWithInfiniteXform.class) {
+               System.out.println(
+                   "Checking done at " + System.currentTimeMillis());
+               System.out.flush();
+                if (!done) {
+                    throw new RuntimeException(
+                       "drawString with InfiniteXform transform takes long time");
+                }
+            }
+        }
+    }
+    public DrawStringWithInfiniteXform() {
+        timer = new Timer();
+        timer.schedule(new ScheduleTask(), 30000);
+    }
+
+    public static void main(String [] args) {
+        DrawStringWithInfiniteXform test = new DrawStringWithInfiniteXform();
+        test.start();
+    }
+
+    private void start() {
+        System.out.println("start at " + System.currentTimeMillis());
+        System.out.flush();
+        float[] vals = new float[6];
+        for (int i=0; i<6; i++) {
+            vals[i] = Float.POSITIVE_INFINITY;
+        }
+        AffineTransform nanTX = new AffineTransform(vals);
+
+        BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g2d = bi.createGraphics();
+
+        g2d.rotate(Float.POSITIVE_INFINITY);
+        Font font = g2d.getFont();
+        Font xfiniteFont;
+        for (int i=0; i<2000; i++) {
+            xfiniteFont = font.deriveFont(Float.POSITIVE_INFINITY);
+            g2d.setFont(xfiniteFont);
+            g2d.drawString("abc", 20, 20);
+        }
+        System.out.println("Loop done at " + System.currentTimeMillis());
+        System.out.flush();
+        synchronized (DrawStringWithInfiniteXform.class) {
+            done = true;
+            timer.cancel();
+        }
+        System.out.println("Test passed");
+    }
+}