7147830: NullPointerException in java.security.Policy.implies() when the...

7147830: NullPointerException in java.security.Policy.implies() when the ProtectionDomain has a null code sou
Reviewed-by: vinnie

src/share/classes/sun/security/provider/PolicyFile.java

@@ -1246,7 +1246,10 @@ public class PolicyFile extends java.security.Policy {
      * @return the set of permissions according to the policy.
      */
     private PermissionCollection getPermissions(Permissions perms,
-                               final CodeSource cs) {
+                                                final CodeSource cs) {
+
+        if (cs == null)
+            return perms;
 
         CodeSource canonCodeSource = AccessController.doPrivileged(
             new java.security.PrivilegedAction<CodeSource>(){

test/sun/security/provider/PolicyFile/NullCodeSource.java

+/*
+ * 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 7147830
+ * @summary PolicyFile.getPermissions(CodeSource) should return
+ *          empty permissions when passed in null code source
+ */
+
+import java.security.CodeSource;
+import java.security.PermissionCollection;
+import java.security.Policy;
+
+public class NullCodeSource {
+    public static void main(String[] args) throws Exception {
+        Policy policy = Policy.getPolicy();
+        PermissionCollection perms = policy.getPermissions((CodeSource)null);
+        if (perms.elements().hasMoreElements()) {
+            System.err.println(perms);
+            throw new Exception("PermissionCollection is not empty");
+        }
+    }
+}