1 /* 2 * Copyright (c) 2016, 2018, 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.security.util; 27 28 import sun.security.action.GetPropertyAction; 29 30 import java.io.FilePermission; 31 import java.security.Permission; 32 import jdk.internal.access.SharedSecrets; 33 34 /** 35 * Take care of FilePermission compatibility after JDK-8164705. 36 */ 37 public class FilePermCompat { 38 /** 39 * New behavior? Keep compatibility? Both default true. 40 */ 41 public static final boolean nb; 42 public static final boolean compat; 43 44 static { 45 String flag = GetPropertyAction.privilegedGetProperty( 46 "jdk.io.permissionsUseCanonicalPath", "false"); 47 switch (flag) { 48 case "true": 49 nb = false; 50 compat = false; 51 break; 52 case "false": 53 nb = true; 54 compat = true; 55 break; 56 default: 57 throw new RuntimeException( 58 "Invalid jdk.io.permissionsUseCanonicalPath: " + flag); 59 } 60 } 61 62 public static Permission newPermPlusAltPath(Permission input) { 63 if (compat && input instanceof FilePermission) { 64 return SharedSecrets.getJavaIOFilePermissionAccess() 65 .newPermPlusAltPath((FilePermission) input); 66 } 67 return input; 68 } 69 70 public static Permission newPermUsingAltPath(Permission input) { 71 if (input instanceof FilePermission) { 72 return SharedSecrets.getJavaIOFilePermissionAccess() 73 .newPermUsingAltPath((FilePermission) input); 74 } 75 return null; 76 } 77 }