1 /* 2 * Copyright (c) 1997, 2020, 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 }