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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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93
test/jdk/java/nio/charset/coders/IsLegalReplacement.java Normal file
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/*
* Copyright (c) 2010, 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 4821286
* @summary Check correctness of CharsetEncoder.isLegalReplacement(byte[])
*/
import java.io.*;
import java.nio.*;
import java.nio.charset.*;
import java.util.*;
public class IsLegalReplacement {
static PrintStream out = System.err;
static int errors = 0;
static String toString(byte[] ba) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < ba.length; i++) {
byte b = ba[i];
if (i > 0)
sb.append(' ');
sb.append(Integer.toHexString((b >> 4) & 0xf));
sb.append(Integer.toHexString((b >> 0) & 0xf));
}
return sb.toString();
}
static CoderResult ilr(String csn, byte[] repl) {
CharsetDecoder dec = Charset.forName(csn).newDecoder();
dec.onMalformedInput(CodingErrorAction.REPORT);
dec.onUnmappableCharacter(CodingErrorAction.REPORT);
ByteBuffer bb = ByteBuffer.wrap(repl);
CharBuffer cb = CharBuffer.allocate((int)(bb.remaining()
* dec.maxCharsPerByte()));
return dec.decode(bb, cb, true);
}
static void test(String csn, byte[] repl, boolean expected)
throws Exception
{
CharsetEncoder enc = Charset.forName(csn).newEncoder();
out.print(csn + ": " + toString(repl) + ": ");
if (enc.isLegalReplacement(repl) == expected) {
out.print("Okay");
} else {
out.print("Wrong: Expected " + expected);
errors++;
}
out.println(" (" + ilr(csn, repl) + ")");
}
public static void main(String[] args) throws Exception {
test("UTF-16", new byte [] { (byte)0xd8, 0, (byte)0xdc, 0 }, true);
test("UTF-16", new byte [] { (byte)0xdc, 0, (byte)0xd8, 0 }, false);
test("UTF-16", new byte [] { (byte)0xd8, 0 }, false);
test("UTF-16BE", new byte [] { (byte)0xd8, 0, (byte)0xdc, 0 }, true);
test("UTF-16BE", new byte [] { (byte)0xdc, 0, (byte)0xd8, 0 }, false);
test("UTF-16BE", new byte [] { (byte)0xd8, 0 }, false);
test("UTF-16LE", new byte [] { 0, (byte)0xd8, 0, (byte)0xdc }, true);
test("UTF-16LE", new byte [] { 0, (byte)0xdc, 0, (byte)0xd8 }, false);
test("UTF-16LE", new byte [] { 0, (byte)0xd8 }, false);
if (errors > 0)
throw new Exception(errors + " error(s) occurred");
}
}