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 import static jdk.jpackage.internal.IOUtils.exec;
38
39 final class WindowsRegistry {
40
41 private WindowsRegistry() {}
42
43 /**
44 * Reads the registry value for DisableRealtimeMonitoring.
45 * @return true if DisableRealtimeMonitoring is set to 0x1,
46 * false otherwise.
47 */
48 static final boolean readDisableRealtimeMonitoring() {
49 boolean result = false;
50 final String key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\"
51 + "Windows Defender\\Real-Time Protection";
52 final String subkey = "DisableRealtimeMonitoring";
53 String value = readRegistry(key, subkey);
54
55 if (!value.isEmpty()) {
56 // This code could be written better but this works. It validates
57 // that the result of readRegistry returned what we expect and then
58 // checks for a 0x0 or 0x1. 0x0 means real time monitoring is
59 // on, 0x1 means it is off. So this function returns true if
60 // real-time-monitoring is disabled.
61 int index = value.indexOf(subkey);
62 value = value.substring(index + subkey.length());
63 String reg = "REG_DWORD";
64 index = value.indexOf(reg);
65 value = value.substring(index + reg.length());
66 String hex = "0x";
67 index = value.indexOf(hex);
68 value = value.substring(index + hex.length());
69
70 if (value.equals("1")) {
71 result = true;
72 }
73 }
74
75 return result;
76 }
77
78 static final List<String> readExclusionsPaths() {
79 List<String> result = new ArrayList<String>();
80 final String key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\"
81 + "Windows Defender\\Exclusions\\Paths";
82 String value = readRegistry(key, "");
83
84 if (!value.isEmpty()) {
85 final String reg = "REG_DWORD";
86 final String hex = "0x0";
87
88 int index = value.indexOf(key);
89 if (index == 0) {
90 value = value.substring(index + key.length());
91
92 while (value.length() > 0) {
93 index = value.indexOf(reg);
94 String name = value.substring(0, index);
95 value = value.substring(index + reg.length());
96 index = value.indexOf(hex);
97 value = value.substring(index + hex.length());
98
99 if (index > 0) {
100 name = name.trim();
101 result.add(name);
102 }
103 }
104 }
105 }
106
107 return result;
108 }
109
110 /**
111 * @param key in the registry
112 * @param subkey in the registry key
113 * @return registry value or null if not found
114 */
115 static final String readRegistry(String key, String subkey){
116 String result = "";
117
118 try {
119 List<String> buildOptions = new ArrayList<>();
120 buildOptions.add("reg");
121 buildOptions.add("query");
122 buildOptions.add("\"" + key + "\"");
123
124 if (!subkey.isEmpty()) {
125 buildOptions.add("/v");
126 buildOptions.add(subkey);
127 }
128
129 try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
130 PrintStream ps = new PrintStream(baos)) {
131 ProcessBuilder security = new ProcessBuilder(buildOptions);
132 exec(security, false, false, ps);
133 BufferedReader bfReader = new BufferedReader(
134 new InputStreamReader(
135 new ByteArrayInputStream(baos.toByteArray())));
136 String line = null;
137
138 while((line = bfReader.readLine()) != null){
139 result += line;
140 }
141 }
142 catch (IOException e) {
143 }
144 }
145 catch (Exception e) {
146 }
147
148 return result;
149 }
150 }