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

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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.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/sun/java2d/marlin/ScaleClipTest.java Normal file
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/*
* Copyright (c) 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.
*/
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.geom.Path2D;
import java.awt.image.BufferedImage;
import java.awt.image.Raster;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
/**
* Scaled Line Clipping rendering test
*
* @test
* @summary verify that scaled line is properly rendered
* @bug 8210335
*/
public class ScaleClipTest {
static final boolean SAVE_IMAGE = false;
static final int SIZE = 50;
enum SCALE_MODE {
ORTHO,
NON_ORTHO,
COMPLEX
};
public static void main(String[] args) {
// First display which renderer is tested:
// JDK9 only:
System.setProperty("sun.java2d.renderer.verbose", "true");
System.out.println("ScaleClipTest: size = " + SIZE);
final BufferedImage image = new BufferedImage(SIZE, SIZE, BufferedImage.TYPE_INT_ARGB);
boolean fail = false;
// testNegativeScale:
for (SCALE_MODE mode : SCALE_MODE.values()) {
try {
testNegativeScale(image, mode);
} catch (IllegalStateException ise) {
System.err.println("testNegativeScale[" + mode + "] failed:");
ise.printStackTrace();
fail = true;
}
}
// testMarginScale:
for (SCALE_MODE mode : SCALE_MODE.values()) {
try {
testMarginScale(image, mode);
} catch (IllegalStateException ise) {
System.err.println("testMarginScale[" + mode + "] failed:");
ise.printStackTrace();
fail = true;
}
}
// Fail at the end:
if (fail) {
throw new RuntimeException("ScaleClipTest has failures.");
}
}
private static void testNegativeScale(final BufferedImage image, final SCALE_MODE mode) {
final Graphics2D g2d = (Graphics2D) image.getGraphics();
try {
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
g2d.setBackground(Color.WHITE);
g2d.clearRect(0, 0, SIZE, SIZE);
g2d.setColor(Color.BLACK);
// Bug in TransformingPathConsumer2D.adjustClipScale()
// non ortho scale only
final double scale = -1.0;
final AffineTransform at;
switch (mode) {
default:
case ORTHO:
at = AffineTransform.getScaleInstance(scale, scale);
break;
case NON_ORTHO:
at = AffineTransform.getScaleInstance(scale, scale + 1e-5);
break;
case COMPLEX:
at = AffineTransform.getScaleInstance(scale, scale);
at.concatenate(AffineTransform.getShearInstance(1e-4, 1e-4));
break;
}
g2d.setTransform(at);
// Set cap/join to reduce clip margin:
g2d.setStroke(new BasicStroke(2f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
final Path2D p = new Path2D.Double();
p.moveTo(scale * 10, scale * 10);
p.lineTo(scale * (SIZE - 10), scale * (SIZE - 10));
g2d.draw(p);
if (SAVE_IMAGE) {
try {
final File file = new File("ScaleClipTest-testNegativeScale-" + mode + ".png");
System.out.println("Writing file: " + file.getAbsolutePath());
ImageIO.write(image, "PNG", file);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
// Check image:
// 25, 25 = black
checkPixel(image.getData(), 25, 25, Color.BLACK.getRGB());
} finally {
g2d.dispose();
}
}
private static void testMarginScale(final BufferedImage image, final SCALE_MODE mode) {
final Graphics2D g2d = (Graphics2D) image.getGraphics();
try {
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
g2d.setBackground(Color.WHITE);
g2d.clearRect(0, 0, SIZE, SIZE);
g2d.setColor(Color.BLACK);
// Bug in Stroker.init()
// ortho scale only: scale used twice !
final double scale = 1e-2;
final AffineTransform at;
switch (mode) {
default:
case ORTHO:
at = AffineTransform.getScaleInstance(scale, scale);
break;
case NON_ORTHO:
at = AffineTransform.getScaleInstance(scale, scale + 1e-5);
break;
case COMPLEX:
at = AffineTransform.getScaleInstance(scale, scale);
at.concatenate(AffineTransform.getShearInstance(1e-4, 1e-4));
break;
}
g2d.setTransform(at);
final double invScale = 1.0 / scale;
// Set cap/join to reduce clip margin:
final float w = (float) (3.0 * invScale);
g2d.setStroke(new BasicStroke(w, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
final Path2D p = new Path2D.Double();
p.moveTo(invScale * -0.5, invScale * 10);
p.lineTo(invScale * -0.5, invScale * (SIZE - 10));
g2d.draw(p);
if (SAVE_IMAGE) {
try {
final File file = new File("ScaleClipTest-testMarginScale-" + mode + ".png");
System.out.println("Writing file: " + file.getAbsolutePath());
ImageIO.write(image, "PNG", file);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
// Check image:
// 0, 25 = black
checkPixel(image.getData(), 0, 25, Color.BLACK.getRGB());
} finally {
g2d.dispose();
}
}
private static void checkPixel(final Raster raster,
final int x, final int y,
final int expected) {
final int[] rgb = (int[]) raster.getDataElements(x, y, null);
if (rgb[0] != expected) {
throw new IllegalStateException("bad pixel at (" + x + ", " + y
+ ") = " + rgb[0] + " expected: " + expected);
}
}
}