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/Files/walkFileTree/MaxDepth.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2010, 2013, 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
+ * @summary Unit test for Files.walkFileTree to test maxDepth parameter
+ * @library ../..
+ * @compile MaxDepth.java CreateFileTree.java
+ * @run main MaxDepth
+ */
+
+import java.nio.file.*;
+import java.nio.file.attribute.*;
+import java.io.IOException;
+import java.util.*;
+
+public class MaxDepth {
+    public static void main(String[] args) throws IOException {
+        Path top = CreateFileTree.create();
+        try {
+            test(top);
+        } finally {
+            TestUtil.removeAll(top);
+        }
+    }
+
+    static void test(final Path top) throws IOException {
+        for (int i=0; i<5; i++) {
+            Set<FileVisitOption> opts = Collections.emptySet();
+            final int maxDepth = i;
+            Files.walkFileTree(top, opts, maxDepth, new SimpleFileVisitor<Path>() {
+                // compute depth based on relative path to top directory
+                private int depth(Path file) {
+                    Path rp = file.relativize(top);
+                    return (rp.getFileName().toString().equals("")) ? 0 : rp.getNameCount();
+                }
+
+                @Override
+                public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
+                    int d = depth(dir);
+                    if (d == maxDepth)
+                        throw new RuntimeException("Should not open directories at maxDepth");
+                    if (d > maxDepth)
+                        throw new RuntimeException("Too deep");
+                    return FileVisitResult.CONTINUE;
+                }
+
+                @Override
+                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
+                    int d = depth(file);
+                    if (d > maxDepth)
+                        throw new RuntimeException("Too deep");
+                    return FileVisitResult.CONTINUE;
+                }
+            });
+        }
+    }
+}