1 /*
2 * Copyright (c) 1997, 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 sun.awt;
27
28 import java.security.PrivilegedAction;
29 import java.util.HashMap;
30 import java.util.Map;
31
32 import static sun.awt.OSInfo.OSType.*;
33
34 /**
35 * @author Pavel Porvatov
36 */
37 public class OSInfo {
38 public static enum OSType {
39 WINDOWS,
40 LINUX,
41 MACOSX,
42 AIX,
43 UNKNOWN
44 }
45
46 /*
47 The map windowsVersionMap must contain all windows version constants except WINDOWS_UNKNOWN,
48 and so the method getWindowsVersion() will return the constant for known OS.
49 It allows compare objects by "==" instead of "equals".
50 */
51 public static final WindowsVersion WINDOWS_UNKNOWN = new WindowsVersion(-1, -1);
52 public static final WindowsVersion WINDOWS_95 = new WindowsVersion(4, 0);
53 public static final WindowsVersion WINDOWS_98 = new WindowsVersion(4, 10);
54 public static final WindowsVersion WINDOWS_ME = new WindowsVersion(4, 90);
55 public static final WindowsVersion WINDOWS_2000 = new WindowsVersion(5, 0);
56 public static final WindowsVersion WINDOWS_XP = new WindowsVersion(5, 1);
57 public static final WindowsVersion WINDOWS_2003 = new WindowsVersion(5, 2);
58 public static final WindowsVersion WINDOWS_VISTA = new WindowsVersion(6, 0);
59 public static final WindowsVersion WINDOWS_7 = new WindowsVersion(6, 1);
60
61 private static final String OS_NAME = "os.name";
62 private static final String OS_VERSION = "os.version";
63
64 private static final Map<String, WindowsVersion> windowsVersionMap = new HashMap<String, OSInfo.WindowsVersion>();
65
66 static {
67 windowsVersionMap.put(WINDOWS_95.toString(), WINDOWS_95);
68 windowsVersionMap.put(WINDOWS_98.toString(), WINDOWS_98);
69 windowsVersionMap.put(WINDOWS_ME.toString(), WINDOWS_ME);
70 windowsVersionMap.put(WINDOWS_2000.toString(), WINDOWS_2000);
71 windowsVersionMap.put(WINDOWS_XP.toString(), WINDOWS_XP);
72 windowsVersionMap.put(WINDOWS_2003.toString(), WINDOWS_2003);
73 windowsVersionMap.put(WINDOWS_VISTA.toString(), WINDOWS_VISTA);
74 windowsVersionMap.put(WINDOWS_7.toString(), WINDOWS_7);
75 }
76
77 private static final PrivilegedAction<OSType> osTypeAction = new PrivilegedAction<OSType>() {
78 public OSType run() {
79 return getOSType();
80 }
81 };
82
83 private OSInfo() {
84 // Don't allow to create instances
85 }
86
87 /**
88 * Returns type of operating system.
89 */
90 public static OSType getOSType() throws SecurityException {
91 String osName = System.getProperty(OS_NAME);
92
93 if (osName != null) {
94 if (osName.contains("Windows")) {
95 return WINDOWS;
96 }
97
98 if (osName.contains("Linux")) {
99 return LINUX;
100 }
101
102 if (osName.contains("OS X")) {
103 return MACOSX;
104 }
105
106 if (osName.contains("AIX")) {
107 return AIX;
108 }
109
110 // determine another OS here
111 }
112
113 return UNKNOWN;
114 }
115
116 public static PrivilegedAction<OSType> getOSTypeAction() {
117 return osTypeAction;
118 }
119
120 public static WindowsVersion getWindowsVersion() throws SecurityException {
121 String osVersion = System.getProperty(OS_VERSION);
122
123 if (osVersion == null) {
124 return WINDOWS_UNKNOWN;
125 }
126
127 synchronized (windowsVersionMap) {
128 WindowsVersion result = windowsVersionMap.get(osVersion);
129
130 if (result == null) {
131 // Try parse version and put object into windowsVersionMap
132 String[] arr = osVersion.split("\\.");
133
134 if (arr.length == 2) {
135 try {
136 result = new WindowsVersion(Integer.parseInt(arr[0]), Integer.parseInt(arr[1]));
137 } catch (NumberFormatException e) {
138 return WINDOWS_UNKNOWN;
139 }
140 } else {
141 return WINDOWS_UNKNOWN;
142 }
143
144 windowsVersionMap.put(osVersion, result);
145 }
146
147 return result;
148 }
149 }
150
151 public static class WindowsVersion implements Comparable<WindowsVersion> {
152 private final int major;
153
154 private final int minor;
155
156 private WindowsVersion(int major, int minor) {
157 this.major = major;
158 this.minor = minor;
159 }
160
161 public int getMajor() {
162 return major;
163 }
164
165 public int getMinor() {
166 return minor;
167 }
168
169 public int compareTo(WindowsVersion o) {
170 int result = major - o.getMajor();
171
172 if (result == 0) {
173 result = minor - o.getMinor();
174 }
175
176 return result;
177 }
178
179 public boolean equals(Object obj) {
180 return obj instanceof WindowsVersion && compareTo((WindowsVersion) obj) == 0;
181 }
182
183 public int hashCode() {
184 return 31 * major + minor;
185 }
186
187 public String toString() {
188 return major + "." + minor;
189 }
190 }
191 }