1 /*

     2  * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.jpackage.internal;

    27 

    28 import java.io.BufferedReader;

    29 import java.io.ByteArrayInputStream;

    30 import java.io.ByteArrayOutputStream;

    31 import java.io.IOException;

    32 import java.io.InputStreamReader;

    33 import java.io.PrintStream;

    34 import java.util.ArrayList;

    35 import java.util.List;

    36 

    37 final class WindowsRegistry {

    38 

    39     // Currently we only support HKEY_LOCAL_MACHINE. Native implementation will

    40     // require support for additinal HKEY if needed.

    41     private static final int HKEY_LOCAL_MACHINE = 1;

    42 

    43     static {

    44         System.loadLibrary("jpackage");

    45     }

    46 

    47     private WindowsRegistry() {}

    48 

    49     /**

    50      * Reads the registry value for DisableRealtimeMonitoring.

    51      * @return true if DisableRealtimeMonitoring is set to 0x1,

    52      *         false otherwise.

    53      */

    54     static final boolean readDisableRealtimeMonitoring() {

    55         final String subKey = "Software\\Microsoft\\"

    56                   + "Windows Defender\\Real-Time Protection";

    57         final String value = "DisableRealtimeMonitoring";

    58         int result = readDwordValue(HKEY_LOCAL_MACHINE, subKey, value, 0);

    59         return (result == 1);

    60     }

    61 

    62     static final List<String> readExclusionsPaths() {

    63         List<String> result = new ArrayList<>();

    64         final String subKey = "Software\\Microsoft\\"

    65                 + "Windows Defender\\Exclusions\\Paths";

    66         long lKey = openRegistryKey(HKEY_LOCAL_MACHINE, subKey);

    67         if (lKey == 0) {

    68             return result;

    69         }

    70 

    71         String valueName;

    72         int index = 0;

    73         do {

    74             valueName = enumRegistryValue(lKey, index);

    75             if (valueName != null) {

    76                 result.add(valueName);

    77                 index++;

    78             }

    79         } while (valueName != null);

    80 

    81         closeRegistryKey(lKey);

    82 

    83         return result;

    84     }

    85 

    86     /**

    87      * Reads DWORD registry value.

    88      *

    89      * @param key one of HKEY predefine value

    90      * @param subKey registry sub key

    91      * @param value value to read

    92      * @param defaultValue default value in case if subKey or value not found

    93      *                     or any other errors occurred

    94      * @return value's data only if it was read successfully, otherwise

    95      *         defaultValue

    96      */

    97     private static native int readDwordValue(int key, String subKey,

    98             String value, int defaultValue);

    99 

   100     /**

   101      * Open registry key.

   102      *

   103      * @param key one of HKEY predefine value

   104      * @param subKey registry sub key

   105      * @return native handle to open key

   106      */

   107     private static native long openRegistryKey(int key, String subKey);

   108 

   109     /**

   110      * Enumerates the values for registry key.

   111      *

   112      * @param lKey native handle to open key returned by openRegistryKey

   113      * @param index index of value starting from 0. Increment until this

   114      *              function returns NULL which means no more values.

   115      * @return returns value or NULL if error or no more data

   116      */

   117     private static native String enumRegistryValue(long lKey, int index);

   118 

   119     /**

   120      * Close registry key.

   121      *

   122      * @param lKey native handle to open key returned by openRegistryKey

   123      */

   124     private static native void closeRegistryKey(long lKey);

   125 

   126     /**

   127      * Compares two Windows paths regardless case and if paths

   128      * are short or long.

   129      *

   130      * @param path1 path to compare

   131      * @param path2 path to compare

   132      * @return true if paths point to same location

   133      */

   134     public static native boolean comparePaths(String path1, String path2);

   135 }