230 lines
8.5 KiB
Java
230 lines
8.5 KiB
Java
/*
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* Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.internal.util;
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import java.util.Properties;
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/**
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* System Property access for internal use only.
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* Read-only access to System property values initialized during Phase 1
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* are cached. Setting, clearing, or modifying the value using
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* {@link System#setProperty) or {@link System#getProperties()} is ignored.
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in these access methods. The caller of these methods should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*/
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public final class StaticProperty {
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// The class static initialization is triggered to initialize these final
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// fields during init Phase 1 and before a security manager is set.
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private static final String JAVA_HOME;
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private static final String USER_HOME;
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private static final String USER_DIR;
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private static final String USER_NAME;
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private static final String JAVA_LIBRARY_PATH;
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private static final String JAVA_IO_TMPDIR;
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// Android-removed: Serial filters are unsupported and some paths are unused.
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// private static final String SUN_BOOT_LIBRARY_PATH;
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// private static final String JDK_SERIAL_FILTER;
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// private static final String JDK_SERIAL_FILTER_FACTORY;
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// private static final String NATIVE_ENCODING;
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private StaticProperty() {}
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static {
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Properties props = System.getProperties();
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JAVA_HOME = getProperty(props, "java.home");
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USER_HOME = getProperty(props, "user.home");
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USER_DIR = getProperty(props, "user.dir");
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USER_NAME = getProperty(props, "user.name");
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JAVA_IO_TMPDIR = getProperty(props, "java.io.tmpdir");
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JAVA_LIBRARY_PATH = getProperty(props, "java.library.path", "");
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// Android-removed: Serial filters are unsupported and some paths are unused.
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// SUN_BOOT_LIBRARY_PATH = getProperty(props, "sun.boot.library.path", "");
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// JDK_SERIAL_FILTER = getProperty(props, "jdk.serialFilter", null);
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// JDK_SERIAL_FILTER_FACTORY = getProperty(props, "jdk.serialFilterFactory", null);
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// NATIVE_ENCODING = getProperty(props, "native.encoding");
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}
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private static String getProperty(Properties props, String key) {
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String v = props.getProperty(key);
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if (v == null) {
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throw new InternalError("null property: " + key);
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}
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return v;
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}
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private static String getProperty(Properties props, String key,
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String defaultVal) {
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String v = props.getProperty(key);
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return (v == null) ? defaultVal : v;
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}
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/**
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* Return the {@code java.home} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code java.home} system property
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*/
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public static String javaHome() {
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return JAVA_HOME;
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}
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/**
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* Return the {@code user.home} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code user.home} system property
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*/
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public static String userHome() {
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return USER_HOME;
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}
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/**
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* Return the {@code user.dir} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code user.dir} system property
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*/
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public static String userDir() {
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return USER_DIR;
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}
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/**
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* Return the {@code user.name} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code user.name} system property
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*/
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public static String userName() {
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return USER_NAME;
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}
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/**
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* Return the {@code java.library.path} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code java.library.path} system property
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*/
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public static String javaLibraryPath() {
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return JAVA_LIBRARY_PATH;
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}
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/**
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* Return the {@code java.io.tmpdir} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code java.io.tmpdir} system property
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*/
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public static String javaIoTmpDir() {
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return JAVA_IO_TMPDIR;
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}
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/**
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* Return the {@code sun.boot.library.path} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code sun.boot.library.path} system property
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*/
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// Android-removed: Unsupported.
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/*
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public static String sunBootLibraryPath() {
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return SUN_BOOT_LIBRARY_PATH;
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}
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*/
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/**
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* Return the {@code jdk.serialFilter} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code jdk.serialFilter} system property
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*/
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// Android-removed: Unsupported.
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/*
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public static String jdkSerialFilter() {
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return JDK_SERIAL_FILTER;
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}
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*/
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/**
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* Return the {@code jdk.serialFilterFactory} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code jdk.serialFilterFactory} system property
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*/
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// Android-removed: Unsupported.
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/*
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public static String jdkSerialFilterFactory() {
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return JDK_SERIAL_FILTER_FACTORY;
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}
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*/
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/**
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* Return the {@code native.encoding} system property.
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*
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* <strong>{@link SecurityManager#checkPropertyAccess} is NOT checked
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* in this method. The caller of this method should take care to ensure
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* that the returned property is not made accessible to untrusted code.</strong>
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*
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* @return the {@code native.encoding} system property
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*/
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// Android-removed: Unsupported.
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/*
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public static String nativeEncoding() {
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return NATIVE_ENCODING;
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}
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*/
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}
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