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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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103
test/jdk/java/text/Bidi/BidiSurrogateTest.java Normal file
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/*
* Copyright (c) 2008, 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 4888843
* @summary verify that surrogate pairs representing codepoints with R or AL directionality
* and correctly recognized and reordered.
*/
import java.text.Bidi;
public class BidiSurrogateTest {
private static final String RTLS = new String(Character.toChars(0x10800)); // surrogate code point with R directionality
private static final String LTRS = new String(Character.toChars(0x107ff)); // surrogate code point with L directionality
private static final String LRE = "\u202a";
private static final String RLE = "\u202b";
private static final String PDF = "\u202c";
public static void main(String[] args) {
new BidiSurrogateTest().test();
}
void test() {
test0();
test1();
}
void test0() {
// test unpaired surrogates - should have L directionality
testRequiresBidi("\ud800", false); // unpaired lead surrogate
testRequiresBidi("\udc00", false); // unpaired trail surrogate
testRequiresBidi("\udc00\ud800", false); // out of order surrogates
testRequiresBidi("a\udc00b\ud800c", false); // out of order surrogates split
testRequiresBidi(LTRS, false); // supplementary with L
testRequiresBidi(RTLS, true); // supplementary with R
testRequiresBidi("a" + RTLS + "b", true); // R supplementary in LTR text
testRequiresBidi(LTRS + RTLS, true); // R supplementary in LTR supplementary text
testRequiresBidi(LRE, false); // LRE lone embedding
testRequiresBidi(RLE, true); // RLE lone embedding
testRequiresBidi(PDF, false); // PDF lone pop embedding
}
void testRequiresBidi(String string, boolean requiresBidi) {
char[] text = string.toCharArray();
if (Bidi.requiresBidi(text, 0, text.length) != requiresBidi) {
throw new RuntimeException("testRequiresBidi failed with '" + string + "', " + requiresBidi);
}
}
void test1() {
// test that strings with surrogate runs process surrogate directionality ok
testBidi("This is a string with " + LTRS + " in it.", false);
testBidi("This is a string with \ud800 in it.", false);
testBidi("This is a string with \u0640 in it.", 22, 1);
testBidi(RTLS, true);
testBidi("This is a string with " + RTLS + RTLS + RTLS + " in it.", 22, 6);
}
void testBidi(String string, boolean directionIsRTL) {
Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);
if (bidi.isMixed()) {
throw new RuntimeException("bidi is mixed");
}
if (bidi.isRightToLeft() != directionIsRTL) {
throw new RuntimeException("bidi is not " + (directionIsRTL ? "rtl" : "ltr"));
}
}
void testBidi(String string, int rtlstart, int rtllength) {
Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);
for (int i = 0; i < bidi.getRunCount(); ++i) {
if ((bidi.getRunLevel(i) & 1) != 0) {
if (bidi.getRunStart(i) != rtlstart ||
bidi.getRunLimit(i) != rtlstart + rtllength) {
throw new RuntimeException("first rtl run didn't match " + rtlstart + ", " + rtllength);
}
break;
}
}
}
}