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/TerminateWalk.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2008, 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 TERMINATE return value
+ * @library ../..
+ * @compile TerminateWalk.java CreateFileTree.java
+ * @run main TerminateWalk
+ * @key randomness
+ */
+
+import java.nio.file.*;
+import java.nio.file.attribute.*;
+import java.io.IOException;
+import java.util.*;
+
+public class TerminateWalk {
+
+    static final Random rand = new Random();
+    static boolean terminated;
+
+    static FileVisitResult maybeTerminate() {
+        if (terminated)
+            throw new RuntimeException("FileVisitor invoked after termination");
+        if (rand.nextInt(10) == 0) {
+            terminated = true;
+            return FileVisitResult.TERMINATE;
+        } else {
+            return FileVisitResult.CONTINUE;
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        Path top = CreateFileTree.create();
+        try {
+            test(top);
+        } finally {
+            TestUtil.removeAll(top);
+        }
+    }
+
+    static void test(Path start) throws IOException {
+        Files.walkFileTree(start, new SimpleFileVisitor<Path>() {
+            @Override
+            public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
+                return maybeTerminate();
+            }
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
+                return maybeTerminate();
+            }
+            @Override
+            public FileVisitResult postVisitDirectory(Path dir, IOException x) {
+                return maybeTerminate();
+            }
+        });
+    }
+}