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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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test/jdk/java/io/FileOutputStream/FileOpenTest.java Normal file
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/*
* Copyright (c) 2017, 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 6364894
* @requires (os.family == "windows")
* @library /test/lib
* @build jdk.test.lib.Asserts
* @run main FileOpenTest
* @summary Test to ensure that opening of hidden Vs non-hidden,
* read/write Vs read-only files for writing works as expected.
*/
import java.io.File;
import java.io.IOException;
import java.io.FileOutputStream;
import java.nio.file.Files;
import static jdk.test.lib.Asserts.assertTrue;
public class FileOpenTest {
private static File tmpFile;
public static void main(String args[]) throws Exception {
try {
tmpFile = File.createTempFile("FileOpenTest", "suffix");
// Opening Writable Normal File..
test(true);
// Opening Writable Hidden File..
Files.setAttribute(tmpFile.toPath(), "dos:hidden", true);
test(false);
// Opening Read-Only Hidden File..
Files.setAttribute(tmpFile.toPath(), "dos:hidden", false);
tmpFile.setReadOnly();
test(false);
// Opening Read-Only Normal File..
Files.setAttribute(tmpFile.toPath(), "dos:hidden", true);
test(false);
} finally {
tmpFile.delete();
}
}
private static void test(boolean writable) throws Exception {
try (FileOutputStream fs = new FileOutputStream(tmpFile)) {
fs.write(1);
assertTrue(writable, "Able to open READ-ONLY file for WRITING!");
assertTrue(tmpFile.canWrite(), "Able to open READ-ONLY file for WRITING!");
} catch(IOException e) {
assertTrue(!writable, "Unable to open non-READ-ONLY file for WRITING!");
System.out.println("Caught the Exception as expected");
e.printStackTrace(System.out);
}
}
}