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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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173
test/jdk/sun/nio/cs/TestStringCodingUTF8.java Normal file
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/*
* Copyright (c) 2011, 2024, 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 7040220 8054307
@summary Test if StringCoding and NIO result have the same de/encoding result for UTF-8
* @run main/othervm/timeout=2000 TestStringCodingUTF8
* @key randomness
*/
import java.util.*;
import java.nio.*;
import java.nio.charset.*;
public class TestStringCodingUTF8 {
public static void main(String[] args) throws Throwable {
test("UTF-8");
test("CESU-8");
}
static void test(String csn) throws Throwable {
Charset cs = Charset.forName(csn);
char[] bmp = new char[0x10000];
for (int i = 0; i < 0x10000; i++) {
bmp[i] = (char)i;
}
test(cs, bmp, 0, bmp.length);
char[] ascii = new char[0x80];
for (int i = 0; i < 0x80; i++) {
ascii[i] = (char)i;
}
test(cs, ascii, 0, ascii.length);
char[] latin1 = new char[0x100];
for (int i = 0; i < 0x100; i++) {
latin1[i] = (char)i;
}
test(cs, latin1, 0, latin1.length);
ArrayList<Integer> list = new ArrayList<>(0x20000);
for (int i = 0; i < 0x20000; i++) {
list.add(i, i);
}
Collections.shuffle(list);
int j = 0;
char[] bmpsupp = new char[0x30000];
for (int i = 0; i < 0x20000; i++) {
j += Character.toChars(list.get(i), bmpsupp, j);
}
assert (j == bmpsupp.length);
test(cs, bmpsupp, 0, bmpsupp.length);
// randomed "off" and "len" on shuffled data
Random rnd = new Random();
int maxlen = 1000;
int itr = 5000;
for (int i = 0; i < itr; i++) {
int off = rnd.nextInt(bmpsupp.length - maxlen);
int len = rnd.nextInt(maxlen);
test(cs, bmpsupp, off, len);
}
// random length of bytes, test the edge corner case
for (int i = 0; i < itr; i++) {
byte[] ba = new byte[rnd.nextInt(maxlen)];
rnd.nextBytes(ba);
//new String(csn);
if (!new String(ba, cs.name()).equals(
new String(decode(cs, ba, 0, ba.length))))
throw new RuntimeException("new String(csn) failed");
//new String(cs);
if (!new String(ba, cs).equals(
new String(decode(cs, ba, 0, ba.length))))
throw new RuntimeException("new String(cs) failed");
}
System.out.println("done!");
}
static void test(Charset cs, char[] ca, int off, int len) throws Throwable {
String str = new String(ca, off, len);
byte[] ba = encode(cs, ca, off, len);
//getBytes(csn);
byte[] baStr = str.getBytes(cs.name());
if (!Arrays.equals(ba, baStr))
throw new RuntimeException("getBytes(csn) failed");
//getBytes(cs);
baStr = str.getBytes(cs);
if (!Arrays.equals(ba, baStr))
throw new RuntimeException("getBytes(cs) failed");
//new String(csn);
if (!new String(ba, cs.name()).equals(new String(decode(cs, ba, 0, ba.length))))
throw new RuntimeException("new String(csn) failed");
//new String(cs);
if (!new String(ba, cs).equals(new String(decode(cs, ba, 0, ba.length))))
throw new RuntimeException("new String(cs) failed");
}
// copy/paste of the StringCoding.decode()
static char[] decode(Charset cs, byte[] ba, int off, int len) {
CharsetDecoder cd = cs.newDecoder();
int en = (int)(len * cd.maxCharsPerByte());
char[] ca = new char[en];
if (len == 0)
return ca;
cd.onMalformedInput(CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE)
.reset();
ByteBuffer bb = ByteBuffer.wrap(ba, off, len);
CharBuffer cb = CharBuffer.wrap(ca);
try {
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
cr.throwException();
cr = cd.flush(cb);
if (!cr.isUnderflow())
cr.throwException();
} catch (CharacterCodingException x) {
throw new Error(x);
}
return Arrays.copyOf(ca, cb.position());
}
// copy/paste of the StringCoding.encode()
static byte[] encode(Charset cs, char[] ca, int off, int len) {
CharsetEncoder ce = cs.newEncoder();
int en = (int)(len * ce.maxBytesPerChar());
byte[] ba = new byte[en];
if (len == 0)
return ba;
ce.onMalformedInput(CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE)
.reset();
ByteBuffer bb = ByteBuffer.wrap(ba);
CharBuffer cb = CharBuffer.wrap(ca, off, len);
try {
CoderResult cr = ce.encode(cb, bb, true);
if (!cr.isUnderflow())
cr.throwException();
cr = ce.flush(bb);
if (!cr.isUnderflow())
cr.throwException();
} catch (CharacterCodingException x) {
throw new Error(x);
}
return Arrays.copyOf(ba, bb.position());
}
}