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/prefs/RemoveNullKeyCheck.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2012, 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 7160242 7165118 7197662
+ * @summary Check if NullPointerException is thrown if the key passed
+ *          to remove() is null.
+ * @run main/othervm -Djava.util.prefs.userRoot=. RemoveNullKeyCheck
+ */
+
+import java.util.prefs.Preferences;
+import java.util.prefs.AbstractPreferences;
+import java.util.prefs.BackingStoreException;
+
+public class RemoveNullKeyCheck {
+
+    private static boolean failed = false;
+
+    public static void main(String[] args) throws Exception {
+        checkPreferencesRemove();
+        checkAbstractPreferencesRemove();
+        if (failed) {
+            throw new RuntimeException("Expected NullPointerException " +
+                                       "not thrown");
+        }
+    }
+
+    public static void checkPreferencesRemove() {
+        try {
+            Preferences node = Preferences.userRoot().node("N1");
+            node.remove(null);
+            failed = true;
+        } catch (NullPointerException npe) {
+        }
+    }
+
+    public static void checkAbstractPreferencesRemove() {
+
+        Preferences abstrPrefs = new AbstractPreferences(null, "") {
+            @Override
+            protected void putSpi(String key, String value) {
+            }
+            @Override
+            protected String getSpi(String key) {
+                return null;
+            }
+            @Override
+            protected void removeSpi(String key) {
+            }
+            @Override
+            protected void removeNodeSpi() throws BackingStoreException {
+            }
+            @Override
+            protected String[] keysSpi() throws BackingStoreException {
+                return new String[0];
+            }
+            @Override
+            protected String[] childrenNamesSpi() throws BackingStoreException {
+                return new String[0];
+            }
+            @Override
+            protected AbstractPreferences childSpi(String name) {
+                return null;
+            }
+            @Override
+            protected void syncSpi() throws BackingStoreException {
+            }
+            @Override
+            protected void flushSpi() throws BackingStoreException {
+            }
+        };
+
+        try {
+            abstrPrefs.remove(null);
+            failed = true;
+        } catch(NullPointerException npe) {
+        }
+    }
+}