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 SOLARIS,
42 MACOSX,
43 AIX,
44 UNKNOWN
45 }
46
47 /*
48 The map windowsVersionMap must contain all windows version constants except WINDOWS_UNKNOWN,
49 and so the method getWindowsVersion() will return the constant for known OS.
50 It allows compare objects by "==" instead of "equals".
51 */
52 public static final WindowsVersion WINDOWS_UNKNOWN = new WindowsVersion(-1, -1);
53 public static final WindowsVersion WINDOWS_95 = new WindowsVersion(4, 0);
54 public static final WindowsVersion WINDOWS_98 = new WindowsVersion(4, 10);
55 public static final WindowsVersion WINDOWS_ME = new WindowsVersion(4, 90);
56 public static final WindowsVersion WINDOWS_2000 = new WindowsVersion(5, 0);
57 public static final WindowsVersion WINDOWS_XP = new WindowsVersion(5, 1);
58 public static final WindowsVersion WINDOWS_2003 = new WindowsVersion(5, 2);
59 public static final WindowsVersion WINDOWS_VISTA = new WindowsVersion(6, 0);
60 public static final WindowsVersion WINDOWS_7 = new WindowsVersion(6, 1);
61
62 private static final String OS_NAME = "os.name";
63 private static final String OS_VERSION = "os.version";
64
65 private static final Map<String, WindowsVersion> windowsVersionMap = new HashMap<String, OSInfo.WindowsVersion>();
66
67 static {
68 windowsVersionMap.put(WINDOWS_95.toString(), WINDOWS_95);
69 windowsVersionMap.put(WINDOWS_98.toString(), WINDOWS_98);
70 windowsVersionMap.put(WINDOWS_ME.toString(), WINDOWS_ME);
71 windowsVersionMap.put(WINDOWS_2000.toString(), WINDOWS_2000);
72 windowsVersionMap.put(WINDOWS_XP.toString(), WINDOWS_XP);
73 windowsVersionMap.put(WINDOWS_2003.toString(), WINDOWS_2003);
74 windowsVersionMap.put(WINDOWS_VISTA.toString(), WINDOWS_VISTA);
75 windowsVersionMap.put(WINDOWS_7.toString(), WINDOWS_7);
76 }
77
78 private static final PrivilegedAction<OSType> osTypeAction = new PrivilegedAction<OSType>() {
79 public OSType run() {
80 return getOSType();
81 }
82 };
83
84 private OSInfo() {
85 // Don't allow to create instances
86 }
87
88 /**
89 * Returns type of operating system.
90 */
91 public static OSType getOSType() throws SecurityException {
92 String osName = System.getProperty(OS_NAME);
93
94 if (osName != null) {
95 if (osName.contains("Windows")) {
96 return WINDOWS;
97 }
98
99 if (osName.contains("Linux")) {
100 return LINUX;
101 }
102
103 if (osName.contains("Solaris") || osName.contains("SunOS")) {
104 return SOLARIS;
105 }
106
107 if (osName.contains("OS X")) {
108 return MACOSX;
109 }
110
111 if (osName.contains("AIX")) {
112 return AIX;
113 }
114
115 // determine another OS here
116 }
117
118 return UNKNOWN;
119 }
120
121 public static PrivilegedAction<OSType> getOSTypeAction() {
122 return osTypeAction;
123 }
124
125 public static WindowsVersion getWindowsVersion() throws SecurityException {
126 String osVersion = System.getProperty(OS_VERSION);
127
128 if (osVersion == null) {
129 return WINDOWS_UNKNOWN;
130 }
131
132 synchronized (windowsVersionMap) {
133 WindowsVersion result = windowsVersionMap.get(osVersion);
134
135 if (result == null) {
136 // Try parse version and put object into windowsVersionMap
137 String[] arr = osVersion.split("\\.");
138
139 if (arr.length == 2) {
140 try {
141 result = new WindowsVersion(Integer.parseInt(arr[0]), Integer.parseInt(arr[1]));
142 } catch (NumberFormatException e) {
143 return WINDOWS_UNKNOWN;
144 }
145 } else {
146 return WINDOWS_UNKNOWN;
147 }
148
149 windowsVersionMap.put(osVersion, result);
150 }
151
152 return result;
153 }
154 }
155
156 public static class WindowsVersion implements Comparable<WindowsVersion> {
157 private final int major;
158
159 private final int minor;
160
161 private WindowsVersion(int major, int minor) {
162 this.major = major;
163 this.minor = minor;
164 }
165
166 public int getMajor() {
167 return major;
168 }
169
170 public int getMinor() {
171 return minor;
172 }
173
174 public int compareTo(WindowsVersion o) {
175 int result = major - o.getMajor();
176
177 if (result == 0) {
178 result = minor - o.getMinor();
179 }
180
181 return result;
182 }
183
184 public boolean equals(Object obj) {
185 return obj instanceof WindowsVersion && compareTo((WindowsVersion) obj) == 0;
186 }
187
188 public int hashCode() {
189 return 31 * major + minor;
190 }
191
192 public String toString() {
193 return major + "." + minor;
194 }
195 }
196 }