1 /*
2 * Copyright (c) 1997, 2012, 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 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
60 private static final String OS_NAME = "os.name";
61 private static final String OS_VERSION = "os.version";
62
63 private static final Map<String, WindowsVersion> windowsVersionMap = new HashMap<String, OSInfo.WindowsVersion>();
64
65 static {
66 windowsVersionMap.put(WINDOWS_95.toString(), WINDOWS_95);
67 windowsVersionMap.put(WINDOWS_98.toString(), WINDOWS_98);
68 windowsVersionMap.put(WINDOWS_ME.toString(), WINDOWS_ME);
69 windowsVersionMap.put(WINDOWS_2000.toString(), WINDOWS_2000);
70 windowsVersionMap.put(WINDOWS_XP.toString(), WINDOWS_XP);
71 windowsVersionMap.put(WINDOWS_2003.toString(), WINDOWS_2003);
72 windowsVersionMap.put(WINDOWS_VISTA.toString(), WINDOWS_VISTA);
73 }
74
75 private static final PrivilegedAction<OSType> osTypeAction = new PrivilegedAction<OSType>() {
76 public OSType run() {
77 return getOSType();
78 }
79 };
80
81 private OSInfo() {
82 // Don't allow to create instances
83 }
84
85 /**
86 * Returns type of operating system.
87 */
88 public static OSType getOSType() throws SecurityException {
89 String osName = System.getProperty(OS_NAME);
90
91 if (osName != null) {
92 if (osName.contains("Windows")) {
93 return WINDOWS;
94 }
95
96 if (osName.contains("Linux")) {
97 return LINUX;
98 }
99
100 if (osName.contains("Solaris") || osName.contains("SunOS")) {
101 return SOLARIS;
102 }
103
104 if (osName.contains("OS X")) {
105 return MACOSX;
106 }
107
108 // determine another OS here
109 }
110
111 return UNKNOWN;
112 }
113
114 public static PrivilegedAction<OSType> getOSTypeAction() {
115 return osTypeAction;
116 }
117
118 public static WindowsVersion getWindowsVersion() throws SecurityException {
119 String osVersion = System.getProperty(OS_VERSION);
120
121 if (osVersion == null) {
122 return WINDOWS_UNKNOWN;
123 }
124
125 synchronized (windowsVersionMap) {
126 WindowsVersion result = windowsVersionMap.get(osVersion);
127
128 if (result == null) {
129 // Try parse version and put object into windowsVersionMap
130 String[] arr = osVersion.split("\\.");
131
132 if (arr.length == 2) {
133 try {
134 result = new WindowsVersion(Integer.parseInt(arr[0]), Integer.parseInt(arr[1]));
135 } catch (NumberFormatException e) {
136 return WINDOWS_UNKNOWN;
137 }
138 } else {
139 return WINDOWS_UNKNOWN;
140 }
141
142 windowsVersionMap.put(osVersion, result);
143 }
144
145 return result;
146 }
147 }
148
149 public static class WindowsVersion implements Comparable<WindowsVersion> {
150 private final int major;
151
152 private final int minor;
153
154 private WindowsVersion(int major, int minor) {
155 this.major = major;
156 this.minor = minor;
157 }
158
159 public int getMajor() {
160 return major;
161 }
162
163 public int getMinor() {
164 return minor;
165 }
166
167 public int compareTo(WindowsVersion o) {
168 int result = major - o.getMajor();
169
170 if (result == 0) {
171 result = minor - o.getMinor();
172 }
173
174 return result;
175 }
176
177 public boolean equals(Object obj) {
178 return obj instanceof WindowsVersion && compareTo((WindowsVersion) obj) == 0;
179 }
180
181 public int hashCode() {
182 return 31 * major + minor;
183 }
184
185 public String toString() {
186 return major + "." + minor;
187 }
188 }
189 }