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/TestUtil.java

@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2008, 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.
+ */
+
+import java.nio.file.*;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Random;
+import java.io.IOException;
+
+public class TestUtil {
+    private TestUtil() {
+    }
+
+    static Path createTemporaryDirectory(String where) throws IOException {
+        Path dir = FileSystems.getDefault().getPath(where);
+        return Files.createTempDirectory(dir, "name");
+    }
+
+    static Path createTemporaryDirectory() throws IOException {
+        return Files.createTempDirectory("name");
+    }
+
+    static void removeAll(Path dir) throws IOException {
+        Files.walkFileTree(dir, new FileVisitor<Path>() {
+            @Override
+            public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
+                return FileVisitResult.CONTINUE;
+            }
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
+                try {
+                    Files.delete(file);
+                } catch (IOException x) {
+                    System.err.format("Unable to delete %s: %s\n", file, x);
+                }
+                return FileVisitResult.CONTINUE;
+            }
+            @Override
+            public FileVisitResult postVisitDirectory(Path dir, IOException exc) {
+                try {
+                    Files.delete(dir);
+                } catch (IOException x) {
+                    System.err.format("Unable to delete %s: %s\n", dir, x);
+                }
+                return FileVisitResult.CONTINUE;
+            }
+            @Override
+            public FileVisitResult visitFileFailed(Path file, IOException exc) {
+                System.err.format("Unable to visit %s: %s\n", file, exc);
+                return FileVisitResult.CONTINUE;
+            }
+        });
+    }
+
+    static void deleteUnchecked(Path file) {
+        try {
+            Files.delete(file);
+        } catch (IOException exc) {
+            System.err.format("Unable to delete %s: %s\n", file, exc);
+        }
+    }
+
+    /**
+     * Creates a directory tree in the given directory so that the total
+     * size of the path is more than 2k in size. This is used for long
+     * path tests on Windows.
+     */
+    static Path createDirectoryWithLongPath(Path dir)
+        throws IOException
+    {
+        StringBuilder sb = new StringBuilder();
+        for (int i=0; i<240; i++) {
+            sb.append('A');
+        }
+        String name = sb.toString();
+        do {
+            dir = dir.resolve(name).resolve(".");
+            Files.createDirectory(dir);
+        } while (dir.toString().length() < 2048);
+        return dir;
+    }
+
+    /**
+     * Returns true if symbolic links are supported
+     */
+    static boolean supportsSymbolicLinks(Path dir) {
+        Path link = dir.resolve("testlink");
+        Path target = dir.resolve("testtarget");
+        try {
+            Files.createSymbolicLink(link, target);
+            Files.delete(link);
+            return true;
+        } catch (UnsupportedOperationException x) {
+            return false;
+        } catch (IOException x) {
+            return false;
+        }
+    }
+
+    /**
+     * Returns true if hard links are supported
+     */
+    static boolean supportsHardLinks(Path dir) {
+        Path link = dir.resolve("testlink");
+        Path target = dir.resolve("testtarget");
+        try {
+            Files.createLink(link, target);
+            Files.delete(link);
+            return true;
+        } catch (UnsupportedOperationException x) {
+            return false;
+        } catch (IOException x) {
+            return false;
+        }
+    }
+}