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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/java/awt/Graphics2D/DrawString/IgnoredWhitespaceTest.java Normal file
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/*
* Copyright (c) 2025, 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 8350203 8356966
* @summary Confirm that a few special whitespace characters are ignored.
*/
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.font.FontRenderContext;
import java.awt.font.TextAttribute;
import java.awt.image.BufferedImage;
import java.text.AttributedString;
import java.util.Map;
public class IgnoredWhitespaceTest {
public static void main(String[] args) throws Exception {
BufferedImage image = new BufferedImage(600, 600, BufferedImage.TYPE_BYTE_BINARY);
Graphics2D g2d = image.createGraphics();
Font font = new Font(Font.DIALOG, Font.PLAIN, 40);
test(image, g2d, font);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
test(image, g2d, font);
g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
test(image, g2d, font);
Font kerningFont = font.deriveFont(Map.of(TextAttribute.KERNING, TextAttribute.KERNING_ON));
test(image, g2d, kerningFont);
Font physicalFont = getPhysicalFont(40);
if (physicalFont != null) {
test(image, g2d, physicalFont);
}
g2d.dispose();
}
private static void test(BufferedImage image, Graphics2D g2d, Font font) {
test(image, g2d, font, "XXXXX", "\t\t\t\t\tXXXXX");
test(image, g2d, font, "XXXXX", "\tX\tX\tX\tX\tX\t");
test(image, g2d, font, "XXXXX", "\r\r\r\r\rXXXXX");
test(image, g2d, font, "XXXXX", "\rX\rX\rX\rX\rX\r");
test(image, g2d, font, "XXXXX", "\n\n\n\n\nXXXXX");
test(image, g2d, font, "XXXXX", "\nX\nX\nX\nX\nX\n");
}
private static void test(BufferedImage image, Graphics2D g2d, Font font, String reference, String text) {
g2d.setFont(font);
FontRenderContext frc = g2d.getFontRenderContext();
int w = image.getWidth();
int h = image.getHeight();
int x = w / 2;
int y = h / 2;
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
g2d.drawString(reference, x, y);
Rectangle expected = findTextBoundingBox(image);
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
g2d.drawString(text, x, y);
Rectangle actual = findTextBoundingBox(image);
assertEqual(expected, actual, text, font);
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
g2d.drawString(new AttributedString(text, Map.of(TextAttribute.FONT, font)).getIterator(), x, y);
actual = findTextBoundingBox(image);
assertEqual(expected, actual, text, font);
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
g2d.drawChars(text.toCharArray(), 0, text.length(), x, y);
actual = findTextBoundingBox(image);
assertEqual(expected, actual, text, font);
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
g2d.drawGlyphVector(font.createGlyphVector(frc, text), x, y);
actual = findTextBoundingBox(image);
assertEqual(expected, actual, text, font);
}
private static void assertEqual(Rectangle r1, Rectangle r2, String text, Font font) {
if (!r1.equals(r2)) {
String escaped = text.replace("\r", "\\r")
.replace("\n", "\\n")
.replace("\t", "\\t");
String msg = String.format("for text '%s' with font %s: %s != %s",
escaped, font.toString(), r1.toString(), r2.toString());
throw new RuntimeException(msg);
}
}
private static Font getPhysicalFont(int size) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
String[] names = ge.getAvailableFontFamilyNames();
for (String n : names) {
switch (n) {
case Font.DIALOG:
case Font.DIALOG_INPUT:
case Font.SERIF:
case Font.SANS_SERIF:
case Font.MONOSPACED:
continue;
default:
Font f = new Font(n, Font.PLAIN, size);
if (f.canDisplayUpTo("AZaz09") == -1) {
return f;
}
}
}
return null;
}
private static Rectangle findTextBoundingBox(BufferedImage image) {
int minX = Integer.MAX_VALUE;
int minY = Integer.MAX_VALUE;
int maxX = Integer.MIN_VALUE;
int maxY = Integer.MIN_VALUE;
int width = image.getWidth();
int height = image.getHeight();
int[] rowPixels = new int[width];
for (int y = 0; y < height; y++) {
image.getRGB(0, y, width, 1, rowPixels, 0, width);
for (int x = 0; x < width; x++) {
boolean white = (rowPixels[x] == -1);
if (!white) {
if (x < minX) {
minX = x;
}
if (y < minY) {
minY = y;
}
if (x > maxX) {
maxX = x;
}
if (y > maxY) {
maxY = y;
}
}
}
}
if (minX != Integer.MAX_VALUE) {
return new Rectangle(minX, minY, maxX - minX, maxY - minY);
} else {
return null;
}
}
}