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8187443: Forest Consolidation: Move files to unified layout
Reviewed-by: darcy, ihse
This commit is contained in:
Erik Joelsson
parent
270fe13182
commit
3789983e89
56923 changed files with 3 additions and 15727 deletions
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@ -0,0 +1,340 @@
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/*
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* Copyright (c) 1999, 2014, 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 com.sun.naming.internal;
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import javax.naming.NamingEnumeration;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.security.PrivilegedActionException;
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import java.security.PrivilegedExceptionAction;
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import java.util.*;
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/**
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* VersionHelper was used by JNDI to accommodate differences between
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* JDK 1.1.x and the Java 2 platform. As this is no longer necessary
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* since JNDI's inclusion in the platform, this class currently
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* serves as a set of utilities for performing system-level things,
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* such as class-loading and reading system properties.
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*
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* @author Rosanna Lee
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* @author Scott Seligman
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*/
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public final class VersionHelper {
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private static final VersionHelper helper = new VersionHelper();
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final static String[] PROPS = new String[]{
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javax.naming.Context.INITIAL_CONTEXT_FACTORY,
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javax.naming.Context.OBJECT_FACTORIES,
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javax.naming.Context.URL_PKG_PREFIXES,
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javax.naming.Context.STATE_FACTORIES,
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javax.naming.Context.PROVIDER_URL,
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javax.naming.Context.DNS_URL,
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// The following shouldn't create a runtime dependence on ldap package.
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javax.naming.ldap.LdapContext.CONTROL_FACTORIES
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};
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public final static int INITIAL_CONTEXT_FACTORY = 0;
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public final static int OBJECT_FACTORIES = 1;
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public final static int URL_PKG_PREFIXES = 2;
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public final static int STATE_FACTORIES = 3;
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public final static int PROVIDER_URL = 4;
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public final static int DNS_URL = 5;
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public final static int CONTROL_FACTORIES = 6;
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private VersionHelper() {} // Disallow anyone from creating one of these.
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public static VersionHelper getVersionHelper() {
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return helper;
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}
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public Class<?> loadClass(String className) throws ClassNotFoundException {
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return loadClass(className, getContextClassLoader());
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}
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/**
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* @param className A non-null fully qualified class name.
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* @param codebase A non-null, space-separated list of URL strings.
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*/
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public Class<?> loadClass(String className, String codebase)
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throws ClassNotFoundException, MalformedURLException {
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ClassLoader parent = getContextClassLoader();
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ClassLoader cl =
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URLClassLoader.newInstance(getUrlArray(codebase), parent);
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return loadClass(className, cl);
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}
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/**
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* Package private.
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* <p>
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* This internal method is used with Thread Context Class Loader (TCCL),
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* please don't expose this method as public.
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*/
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Class<?> loadClass(String className, ClassLoader cl)
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throws ClassNotFoundException {
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Class<?> cls = Class.forName(className, true, cl);
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return cls;
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}
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/*
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* Returns a JNDI property from the system properties. Returns
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* null if the property is not set, or if there is no permission
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* to read it.
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*/
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String getJndiProperty(int i) {
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PrivilegedAction<String> act = () -> {
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try {
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return System.getProperty(PROPS[i]);
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} catch (SecurityException e) {
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return null;
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}
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};
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return AccessController.doPrivileged(act);
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}
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/*
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* Reads each property in PROPS from the system properties, and
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* returns their values -- in order -- in an array. For each
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* unset property, the corresponding array element is set to null.
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* Returns null if there is no permission to call System.getProperties().
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*/
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String[] getJndiProperties() {
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PrivilegedAction<Properties> act = () -> {
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try {
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return System.getProperties();
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} catch (SecurityException e) {
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return null;
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}
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};
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Properties sysProps = AccessController.doPrivileged(act);
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if (sysProps == null) {
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return null;
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}
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String[] jProps = new String[PROPS.length];
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for (int i = 0; i < PROPS.length; i++) {
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jProps[i] = sysProps.getProperty(PROPS[i]);
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}
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return jProps;
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}
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private static String resolveName(Class<?> c, String name) {
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if (name == null) {
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return name;
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}
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if (!name.startsWith("/")) {
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while (c.isArray()) {
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c = c.getComponentType();
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}
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String baseName = c.getName();
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int index = baseName.lastIndexOf('.');
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if (index != -1) {
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name = baseName.substring(0, index).replace('.', '/')
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+"/"+name;
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}
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} else {
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name = name.substring(1);
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}
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return name;
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}
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/*
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* Returns the resource of a given name associated with a particular
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* class (never null), or null if none can be found.
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*/
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InputStream getResourceAsStream(Class<?> c, String name) {
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PrivilegedAction<InputStream> act = () -> {
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try {
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Module m = c.getModule();
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return c.getModule().getResourceAsStream(resolveName(c,name));
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} catch (IOException x) {
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return null;
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}
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};
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return AccessController.doPrivileged(act);
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}
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/*
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* Returns an input stream for a file in <java.home>/conf,
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* or null if it cannot be located or opened.
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*
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* @param filename The file name, sans directory.
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*/
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InputStream getJavaHomeConfStream(String filename) {
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PrivilegedAction<InputStream> act = () -> {
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try {
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String javahome = System.getProperty("java.home");
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if (javahome == null) {
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return null;
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}
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String pathname = javahome + File.separator +
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"conf" + File.separator + filename;
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return new FileInputStream(pathname);
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} catch (Exception e) {
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return null;
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}
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};
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return AccessController.doPrivileged(act);
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}
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/*
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* Returns an enumeration (never null) of InputStreams of the
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* resources of a given name associated with a particular class
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* loader. Null represents the bootstrap class loader in some
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* Java implementations.
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*/
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NamingEnumeration<InputStream> getResources(ClassLoader cl,
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String name) throws IOException {
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Enumeration<URL> urls;
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PrivilegedExceptionAction<Enumeration<URL>> act = () ->
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(cl == null)
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? ClassLoader.getSystemResources(name)
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: cl.getResources(name);
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try {
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urls = AccessController.doPrivileged(act);
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getException();
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}
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return new InputStreamEnumeration(urls);
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}
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/**
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* Package private.
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* <p>
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* This internal method returns Thread Context Class Loader (TCCL),
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* if null, returns the system Class Loader.
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* <p>
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* Please don't expose this method as public.
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* @throws SecurityException if the class loader is not accessible
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*/
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ClassLoader getContextClassLoader() {
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PrivilegedAction<ClassLoader> act = () -> {
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ClassLoader loader = Thread.currentThread().getContextClassLoader();
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if (loader == null) {
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// Don't use bootstrap class loader directly!
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loader = ClassLoader.getSystemClassLoader();
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}
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return loader;
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};
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return AccessController.doPrivileged(act);
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}
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private static URL[] getUrlArray(String codebase)
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throws MalformedURLException {
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// Parse codebase into separate URLs
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StringTokenizer parser = new StringTokenizer(codebase);
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List<String> list = new ArrayList<>();
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while (parser.hasMoreTokens()) {
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list.add(parser.nextToken());
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}
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String[] url = new String[list.size()];
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for (int i = 0; i < url.length; i++) {
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url[i] = list.get(i);
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}
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URL[] urlArray = new URL[url.length];
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for (int i = 0; i < urlArray.length; i++) {
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urlArray[i] = new URL(url[i]);
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}
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return urlArray;
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}
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/**
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* Given an enumeration of URLs, an instance of this class represents
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* an enumeration of their InputStreams. Each operation on the URL
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* enumeration is performed within a doPrivileged block.
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* This is used to enumerate the resources under a foreign codebase.
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* This class is not MT-safe.
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*/
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private class InputStreamEnumeration implements
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NamingEnumeration<InputStream> {
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private final Enumeration<URL> urls;
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private InputStream nextElement;
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InputStreamEnumeration(Enumeration<URL> urls) {
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this.urls = urls;
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}
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/*
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* Returns the next InputStream, or null if there are no more.
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* An InputStream that cannot be opened is skipped.
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*/
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private InputStream getNextElement() {
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PrivilegedAction<InputStream> act = () -> {
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while (urls.hasMoreElements()) {
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try {
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return urls.nextElement().openStream();
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} catch (IOException e) {
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// skip this URL
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}
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}
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return null;
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};
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return AccessController.doPrivileged(act);
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}
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public boolean hasMore() {
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if (nextElement != null) {
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return true;
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}
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nextElement = getNextElement();
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return (nextElement != null);
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}
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public boolean hasMoreElements() {
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return hasMore();
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}
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public InputStream next() {
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if (hasMore()) {
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InputStream res = nextElement;
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nextElement = null;
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return res;
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} else {
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throw new NoSuchElementException();
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}
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}
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public InputStream nextElement() {
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return next();
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}
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public void close() {
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}
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}
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}
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