undefect. CWE-407 — 63 sites patched across 27 ecosystems

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.

test/jdk/java/nio/file/attribute/BasicFileAttributeView/Basic.java

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+/*
+ * Copyright (c) 2008, 2025, 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 4313887 6838333 8364277
+ * @summary Unit test for java.nio.file.attribute.BasicFileAttributeView
+ * @library ../.. /test/lib
+ * @build jdk.test.lib.Platform
+ *        jdk.test.lib.util.FileUtils
+ * @run main/othervm --enable-native-access=ALL-UNNAMED Basic
+ */
+
+import java.nio.file.*;
+import java.nio.file.attribute.*;
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+import java.io.*;
+
+import jdk.test.lib.Platform;
+import jdk.test.lib.util.FileUtils;
+
+public class Basic {
+
+    static void check(boolean okay, String msg) {
+        if (!okay)
+            throw new RuntimeException(msg);
+    }
+
+    static void checkAttributesOfDirectory(Path dir)
+        throws IOException
+    {
+        BasicFileAttributes attrs = Files.readAttributes(dir, BasicFileAttributes.class);
+        check(attrs.isDirectory(), "is a directory");
+        check(!attrs.isRegularFile(), "is not a regular file");
+        check(!attrs.isSymbolicLink(), "is not a link");
+        check(!attrs.isOther(), "is not other");
+
+        // last-modified-time should match java.io.File in seconds
+        File f = new File(dir.toString());
+        check(f.lastModified()/1000 == attrs.lastModifiedTime().to(TimeUnit.SECONDS),
+              "last-modified time should be the same");
+    }
+
+    static void checkAttributesOfFile(Path dir, Path file)
+        throws IOException
+    {
+        BasicFileAttributes attrs = Files.readAttributes(file, BasicFileAttributes.class);
+        check(attrs.isRegularFile(), "is a regular file");
+        check(!attrs.isDirectory(), "is not a directory");
+        check(!attrs.isSymbolicLink(), "is not a link");
+        check(!attrs.isOther(), "is not other");
+
+        // size and last-modified-time should match java.io.File in seconds
+        File f = new File(file.toString());
+        check(f.length() == attrs.size(), "size should be the same");
+        check(f.lastModified()/1000 == attrs.lastModifiedTime().to(TimeUnit.SECONDS),
+              "last-modified time should be the same");
+
+        // copy last-modified time from directory to file,
+        // re-read attribtues, and check they match
+        BasicFileAttributeView view =
+            Files.getFileAttributeView(file, BasicFileAttributeView.class);
+        BasicFileAttributes dirAttrs = Files.readAttributes(dir, BasicFileAttributes.class);
+        view.setTimes(dirAttrs.lastModifiedTime(), null, null);
+
+        attrs = view.readAttributes();
+        check(attrs.lastModifiedTime().equals(dirAttrs.lastModifiedTime()),
+            "last-modified time should be equal");
+
+        // security tests
+        check (!(attrs instanceof PosixFileAttributes),
+            "should not be able to cast to PosixFileAttributes");
+    }
+
+    static void checkAttributesOfLink(Path link)
+        throws IOException
+    {
+        BasicFileAttributes attrs =
+            Files.readAttributes(link, BasicFileAttributes.class, LinkOption.NOFOLLOW_LINKS);
+        check(attrs.isSymbolicLink(), "is a link");
+        check(!attrs.isDirectory(), "is a directory");
+        check(!attrs.isRegularFile(), "is not a regular file");
+        check(!attrs.isOther(), "is not other");
+    }
+
+    static void checkAttributesOfJunction(Path junction)
+        throws IOException
+    {
+        BasicFileAttributes attrs =
+            Files.readAttributes(junction, BasicFileAttributes.class, LinkOption.NOFOLLOW_LINKS);
+        check(!attrs.isSymbolicLink(), "is a link");
+        check(!attrs.isDirectory(), "is a directory");
+        check(!attrs.isRegularFile(), "is not a regular file");
+        check(attrs.isOther(), "is other");
+    }
+
+    static void attributeReadWriteTests(Path dir)
+        throws IOException
+    {
+        // create file
+        Path file = dir.resolve("foo");
+        try (OutputStream out = Files.newOutputStream(file)) {
+            out.write("this is not an empty file".getBytes("UTF-8"));
+        }
+
+        // check attributes of directory and file
+        checkAttributesOfDirectory(dir);
+        checkAttributesOfFile(dir, file);
+
+        // symbolic links may be supported
+        Path link = dir.resolve("link");
+        try {
+            Files.createSymbolicLink(link, file);
+            checkAttributesOfLink(link);
+        } catch (IOException | UnsupportedOperationException x) {
+            if (!Platform.isWindows())
+                return;
+        }
+
+        // NTFS junctions are Windows-only
+        if (Platform.isWindows()) {
+            Path junction = dir.resolve("junction");
+            FileUtils.createWinDirectoryJunction(junction, dir);
+            checkAttributesOfJunction(junction);
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+        // create temporary directory to run tests
+        Path dir = TestUtil.createTemporaryDirectory();
+        try {
+            attributeReadWriteTests(dir);
+        } finally {
+            TestUtil.removeAll(dir);
+        }
+    }
+}