1 /*
2 * Copyright (c) 1997, 2006, 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 UNKNOWN
43 }
44
45 /*
46 The map windowsVersionMap must contain all windows version constants except WINDOWS_UNKNOWN,
47 and so the method getWindowsVersion() will return the constant for known OS.
48 It allows compare objects by "==" instead of "equals".
49 */
50 public static final WindowsVersion WINDOWS_UNKNOWN = new WindowsVersion(-1, -1);
51 public static final WindowsVersion WINDOWS_95 = new WindowsVersion(4, 0);
52 public static final WindowsVersion WINDOWS_98 = new WindowsVersion(4, 10);
53 public static final WindowsVersion WINDOWS_ME = new WindowsVersion(4, 90);
54 public static final WindowsVersion WINDOWS_2000 = new WindowsVersion(5, 0);
55 public static final WindowsVersion WINDOWS_XP = new WindowsVersion(5, 1);
56 public static final WindowsVersion WINDOWS_2003 = new WindowsVersion(5, 2);
57 public static final WindowsVersion WINDOWS_VISTA = new WindowsVersion(6, 0);
58
59 private static final String OS_NAME = "os.name";
60 private static final String OS_VERSION = "os.version";
61
62 private final static Map<String, WindowsVersion> windowsVersionMap = new HashMap<String, OSInfo.WindowsVersion>();
63
64 static {
65 windowsVersionMap.put(WINDOWS_95.toString(), WINDOWS_95);
66 windowsVersionMap.put(WINDOWS_98.toString(), WINDOWS_98);
67 windowsVersionMap.put(WINDOWS_ME.toString(), WINDOWS_ME);
68 windowsVersionMap.put(WINDOWS_2000.toString(), WINDOWS_2000);
69 windowsVersionMap.put(WINDOWS_XP.toString(), WINDOWS_XP);
70 windowsVersionMap.put(WINDOWS_2003.toString(), WINDOWS_2003);
71 windowsVersionMap.put(WINDOWS_VISTA.toString(), WINDOWS_VISTA);
72 }
73
74 private static final PrivilegedAction<OSType> osTypeAction = new PrivilegedAction<OSType>() {
75 public OSType run() {
76 return getOSType();
77 }
78 };
79
80 private OSInfo() {
81 // Don't allow to create instances
82 }
83
84 /**
85 * Returns type of operating system.
86 */
87 public static OSType getOSType() throws SecurityException {
88 String osName = System.getProperty(OS_NAME);
89
90 if (osName != null) {
91 if (osName.contains("Windows")) {
92 return WINDOWS;
93 }
94
95 if (osName.contains("Linux")) {
96 return LINUX;
97 }
98
99 if (osName.contains("Solaris") || osName.contains("SunOS")) {
100 return SOLARIS;
101 }
102
103 // determine another OS here
104 }
105
106 return UNKNOWN;
107 }
108
109 public static PrivilegedAction<OSType> getOSTypeAction() {
110 return osTypeAction;
111 }
112
113 public static WindowsVersion getWindowsVersion() throws SecurityException {
114 String osVersion = System.getProperty(OS_VERSION);
115
116 if (osVersion == null) {
117 return WINDOWS_UNKNOWN;
118 }
119
120 synchronized (windowsVersionMap) {
121 WindowsVersion result = windowsVersionMap.get(osVersion);
122
123 if (result == null) {
124 // Try parse version and put object into windowsVersionMap
125 String[] arr = osVersion.split("\\.");
126
127 if (arr.length == 2) {
128 try {
129 result = new WindowsVersion(Integer.parseInt(arr[0]), Integer.parseInt(arr[1]));
130 } catch (NumberFormatException e) {
131 return WINDOWS_UNKNOWN;
132 }
133 } else {
134 return WINDOWS_UNKNOWN;
135 }
136
137 windowsVersionMap.put(osVersion, result);
138 }
139
140 return result;
141 }
142 }
143
144 public static class WindowsVersion implements Comparable<WindowsVersion> {
145 private final int major;
146
147 private final int minor;
148
149 private WindowsVersion(int major, int minor) {
150 this.major = major;
151 this.minor = minor;
152 }
153
154 public int getMajor() {
155 return major;
156 }
157
158 public int getMinor() {
159 return minor;
160 }
161
162 public int compareTo(WindowsVersion o) {
163 int result = major - o.getMajor();
164
165 if (result == 0) {
166 result = minor - o.getMinor();
167 }
168
169 return result;
170 }
171
172 public boolean equals(Object obj) {
173 return obj instanceof WindowsVersion && compareTo((WindowsVersion) obj) == 0;
174 }
175
176 public int hashCode() {
177 return 31 * major + minor;
178 }
179
180 public String toString() {
181 return major + "." + minor;
182 }
183 }
184 }