--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jpackager/windows/classes/jdk/jpackager/internal/WindowsRegistry.java	Wed Nov 21 17:50:46 2018 -0500
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2012, 2018, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.jpackager.internal;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.List;
+
+import static jdk.jpackager.internal.IOUtils.exec;
+
+public final class WindowsRegistry {
+
+    private WindowsRegistry() {}
+
+    /**
+     * Reads the registry value for DisableRealtimeMonitoring.
+     * @return true if DisableRealtimeMonitoring is set to 0x1,
+     *         false otherwise.
+     */
+    public static final boolean readDisableRealtimeMonitoring() {
+        boolean result = false;
+        final String key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\"
+                  + "Windows Defender\\Real-Time Protection";
+        final String subkey = "DisableRealtimeMonitoring";
+        String value = readRegistry(key, subkey);
+
+        if (!value.isEmpty()) {
+            // This code could be written better but this works. It validates
+            // that the result of readRegistry returned what we expect and then
+            // checks for a 0x0 or 0x1. 0x0 means real time monitoring is
+            // on, 0x1 means it is off. So this function returns true if
+            // real-time-monitoring is disabled.
+            int index = value.indexOf(subkey);
+            value = value.substring(index + subkey.length());
+            String reg = "REG_DWORD";
+            index = value.indexOf(reg);
+            value = value.substring(index + reg.length());
+            String hex = "0x";
+            index = value.indexOf(hex);
+            value = value.substring(index + hex.length());
+
+            if (value.equals("1")) {
+                result = true;
+            }
+        }
+
+        return result;
+    }
+
+    public static final List<String> readExclusionsPaths() {
+        List<String> result = new ArrayList<String>();
+        final String key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\"
+                + "Windows Defender\\Exclusions\\Paths";
+        String value = readRegistry(key, "");
+
+        if (!value.isEmpty()) {
+            final String reg = "REG_DWORD";
+            final String hex = "0x0";
+
+            int index = value.indexOf(key);
+            if (index == 0) {
+                value = value.substring(index + key.length());
+
+                while (value.length() > 0) {
+                    index = value.indexOf(reg);
+                    String name = value.substring(0, index);
+                    value = value.substring(index + reg.length());
+                    index = value.indexOf(hex);
+                    value = value.substring(index + hex.length());
+
+                    if (index > 0) {
+                        name = name.trim();
+                        result.add(name);
+                    }
+                }
+            }
+        }
+
+        return result;
+    }
+
+    /**
+     * @param key in the registry
+     * @param subkey in the registry key
+     * @return registry value or null if not found
+     */
+    public static final String readRegistry(String key, String subkey){
+        String result = "";
+
+        try {
+            List<String> buildOptions = new ArrayList<>();
+            buildOptions.add("reg");
+            buildOptions.add("query");
+            buildOptions.add("\"" + key + "\"");
+
+            if (!subkey.isEmpty()) {
+                buildOptions.add("/v");
+                buildOptions.add(subkey);
+            }
+
+            try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                    PrintStream ps = new PrintStream(baos)) {
+                ProcessBuilder security = new ProcessBuilder(buildOptions);
+                exec(security, false, false, ps);
+                BufferedReader bfReader = new BufferedReader(
+                        new InputStreamReader(
+                        new ByteArrayInputStream(baos.toByteArray())));
+                String line = null;
+
+                while((line = bfReader.readLine()) != null){
+                    result += line;
+                }
+            }
+            catch (IOException e) {
+            }
+        }
+        catch (Exception e) {
+        }
+
+        return result;
+    }
+}