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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/util/jar/JarFile/SignedJarFileGetInputStream.java Normal file
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/*
* Copyright (c) 2004, 2026, 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 4845692 8206863
* @summary JarFile.getInputStream should not throw when jar file is signed
* @run junit SignedJarFileGetInputStream
*/
import org.junit.jupiter.api.Test;
import java.io.*;
import java.util.*;
import java.util.jar.*;
import java.util.zip.*;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertThrows;
public class SignedJarFileGetInputStream {
@Test
void signedJarTest() throws IOException {
JarFile jar = new JarFile(
new File(System.getProperty("test.src", "."), "Signed.jar"));
for (Enumeration e = jar.entries(); e.hasMoreElements();) {
JarEntry entry = (JarEntry) e.nextElement();
InputStream is = assertDoesNotThrow(() -> jar.getInputStream(new ZipEntry(entry.getName())));
is.close();
}
// read(), available() on closed stream should throw IOException
InputStream is = jar.getInputStream(new ZipEntry("Test.class"));
is.close();
byte[] buffer = new byte[1];
assertThrows(IOException.class, () -> is.read());
assertThrows(IOException.class, () -> is.read(buffer));
assertThrows(IOException.class, () -> is.read(buffer, 0, buffer.length));
assertThrows(IOException.class, () -> is.available());
}
}