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/util/HashSet/Serialization.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 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.
+ */
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.HashSet;
+import java.util.Random;
+import java.util.concurrent.ThreadLocalRandom;
+
+/*
+ * @test
+ * @bug 8016252
+ * @summary Verify that a serialized HashSet may successfully be deserialized.
+ * @key randomness
+ */
+public class Serialization {
+
+    private static final int NUM_SETS = 43;
+    private static final int MAX_CAPACITY = 257;
+    private static final float MAX_LOAD_FACTOR = 100.0F;
+
+    private static final Random rnd = ThreadLocalRandom.current();
+
+    private static HashSet<Integer> createHashSet() {
+        int capacity = rnd.nextInt(MAX_CAPACITY);
+        float loadFactor = Float.MIN_VALUE + rnd.nextFloat()*MAX_LOAD_FACTOR;
+        HashSet<Integer> hashSet = new HashSet<Integer>(capacity, loadFactor);
+        float multiplier = 2*rnd.nextFloat(); // range [0,2]
+        int size = (int)(capacity*loadFactor*multiplier);
+        for (int i = 0; i < size; i++) {
+            hashSet.add(rnd.nextInt());
+        }
+        return hashSet;
+    }
+
+    private static HashSet<Integer> serDeser(HashSet<Integer> hashSet) throws IOException, ClassNotFoundException {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        ObjectOutputStream oos = new ObjectOutputStream(baos);
+        oos.writeObject(hashSet);
+        oos.flush();
+
+        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
+        ObjectInputStream ois = new ObjectInputStream(bais);
+        HashSet<Integer> result = (HashSet<Integer>)ois.readObject();
+
+        oos.close();
+        ois.close();
+
+        return result;
+    }
+
+    private static void printHashSet(HashSet<Integer> hashSet) {
+        System.err.println("Size: "+hashSet.size());
+        for (Object o : hashSet) {
+            System.err.println(o);
+        }
+    }
+
+    public static void main(String[] args) {
+        int failures = 0;
+
+        for (int i = 0; i < NUM_SETS; i++) {
+            HashSet<Integer> hashSet = createHashSet();
+
+            HashSet<Integer> result = null;
+            try {
+                result = serDeser(hashSet);
+            } catch (IOException ioe) {
+                System.err.println(ioe);
+                failures++;
+            } catch (ClassNotFoundException cnfe) {
+                System.err.println(cnfe);
+                failures++;
+            }
+
+            if (!hashSet.equals(result)) {
+                System.err.println("Unequal HashSets!");
+                printHashSet(hashSet);
+                System.err.println();
+                failures++;
+            }
+        }
+
+        if (failures != 0) {
+            throw new RuntimeException("HashSet/Serialzation failed with "+
+                    failures+" failures!");
+        }
+    }
+}