1 /* 2 * Copyright (c) 2015, 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 package jdk.xml.internal; 26 27 import java.io.File; 28 import java.io.FileInputStream; 29 import java.io.FileNotFoundException; 30 import java.io.IOException; 31 import java.io.InputStream; 32 import java.security.AccessController; 33 import java.security.PrivilegedAction; 34 import java.security.PrivilegedActionException; 35 import java.security.PrivilegedExceptionAction; 36 import java.text.MessageFormat; 37 import java.util.Locale; 38 import java.util.Properties; 39 import java.util.ResourceBundle; 40 41 /** 42 * This class contains utility methods for reading resources in the JAXP packages 43 */ 44 public class SecuritySupport { 45 /** 46 * Cache for properties in java.home/conf/jaxp.properties 47 */ 48 static final Properties cacheProps = new Properties(); 49 50 /** 51 * Flag indicating whether java.home/conf/jaxp.properties has been read 52 */ 53 static volatile boolean firstTime = true; 54 55 private SecuritySupport() {} 56 57 public static String getErrorMessage(Locale locale, String bundle, String key, 58 Object[] arguments) { 59 ResourceBundle rb; 60 if (locale != null) { 61 rb = ResourceBundle.getBundle(bundle,locale); 62 } else { 63 rb = ResourceBundle.getBundle(bundle); 64 } 65 66 String msg = rb.getString(key); 67 if (arguments != null) { 68 msg = MessageFormat.format(msg, arguments); 69 } 70 return msg; 71 } 72 73 /** 74 * Reads JAXP system property with privilege 75 * 76 * @param propName the name of the property 77 * @return the value of the property 78 */ 79 public static String getSystemProperty(final String propName) { 80 return 81 AccessController.doPrivileged( 82 (PrivilegedAction<String>) () -> (String)System.getProperty(propName)); 83 } 84 85 /** 86 * Reads JAXP system property in this order: system property, 87 * $java.home/conf/jaxp.properties if the system property is not specified 88 * 89 * @param propName the name of the property 90 * @return the value of the property 91 */ 92 public static String getJAXPSystemProperty(String propName) { 93 String value = getSystemProperty(propName); 94 if (value == null) { 95 value = readJAXPProperty(propName); 96 } 97 return value; 98 } 99 100 /** 101 * Reads the specified property from $java.home/conf/jaxp.properties 102 * 103 * @param propName the name of the property 104 * @return the value of the property 105 */ 106 public static String readJAXPProperty(String propName) { 107 String value = null; 108 InputStream is = null; 109 try { 110 if (firstTime) { 111 synchronized (cacheProps) { 112 if (firstTime) { 113 String configFile = getSystemProperty("java.home") + File.separator 114 + "conf" + File.separator + "jaxp.properties"; 115 File f = new File(configFile); 116 if (getFileExists(f)) { 117 is = getFileInputStream(f); 118 cacheProps.load(is); 119 } 120 firstTime = false; 121 } 122 } 123 } 124 value = cacheProps.getProperty(propName); 125 126 } catch (IOException ex) { 127 } finally { 128 if (is != null) { 129 try { 130 is.close(); 131 } catch (IOException ex) {} 132 } 133 } 134 135 return value; 136 } 137 138 //------------------- private methods --------------------------- 139 static boolean getFileExists(final File f) { 140 return (AccessController.doPrivileged((PrivilegedAction<Boolean>) () 141 -> f.exists() ? Boolean.TRUE : Boolean.FALSE)); 142 } 143 144 static FileInputStream getFileInputStream(final File file) 145 throws FileNotFoundException { 146 try { 147 return AccessController.doPrivileged((PrivilegedExceptionAction<FileInputStream>) () 148 -> new FileInputStream(file)); 149 } catch (PrivilegedActionException e) { 150 throw (FileNotFoundException) e.getException(); 151 } 152 } 153 }