8043252: Debug of access control is obfuscated - NullPointerException in ProtectionDomain

Protect against null return value from Permission.getActions in ProtectionDomain's toString method.

Reviewed-by: weijun, mullan

jdk/src/java.base/share/classes/java/security/ProtectionDomain.java

@@ -32,6 +32,7 @@ import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.Enumeration;
 import java.util.List;
+import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
 import jdk.internal.misc.JavaSecurityAccess;
 import jdk.internal.misc.JavaSecurityProtectionDomainAccess;
@@ -524,7 +525,7 @@ public class ProtectionDomain {
                             // have some side effects so this manual
                             // comparison is sufficient.
                             if (pdpName.equals(pp.getName()) &&
-                                pdpActions.equals(pp.getActions())) {
+                                Objects.equals(pdpActions, pp.getActions())) {
                                 plVector.remove(i);
                                 break;
                             }

jdk/test/java/security/ProtectionDomain/NullGetActions.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2016, 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 8043252
+ * @summary Debug of access control is obfuscated - NullPointerException in
+ *          ProtectionDomain
+ * @run main/othervm/java.security.policy=NullGetActions.policy NullGetActions
+ */
+
+import java.net.*;
+import java.security.*;
+
+public class NullGetActions {
+
+    public static void main(String[] args) throws Exception {
+        Permissions permset = new Permissions();
+        permset.add(new EvilPermission("java.let.me.do.stuff"));
+
+        Policy.getPolicy();
+        ProtectionDomain protDom = new ProtectionDomain(
+                new CodeSource(new URL("http://bar"),
+                        (java.security.cert.Certificate[])null), permset,
+                        null, null);
+
+        System.out.println("Protection Domain:\n" + protDom);
+    }
+
+    public static class EvilPermission extends Permission {
+        public EvilPermission(String name) {
+            super(name);
+        }
+
+        @Override
+        public String getActions() {
+            return null;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            return (obj == this);
+        }
+
+        @Override
+        public int hashCode() {
+            return 42;
+        }
+
+        @Override
+        public boolean implies(Permission permission) {
+            return false;
+        }
+    }
+}

jdk/test/java/security/ProtectionDomain/NullGetActions.policy

@@ -0,0 +1,3 @@
+grant {
+    permission java.security.SecurityPermission "getPolicy";
+};