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/*
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* Copyright 1997-2006 Sun Microsystems, Inc. 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. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.misc;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.Hashtable;
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import java.util.NoSuchElementException;
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import java.util.Stack;
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import java.util.Set;
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import java.util.HashSet;
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import java.util.StringTokenizer;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.jar.JarFile;
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import sun.misc.JarIndex;
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import sun.misc.InvalidJarIndexException;
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import sun.net.www.ParseUtil;
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import java.util.zip.ZipEntry;
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import java.util.jar.JarEntry;
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import java.util.jar.Manifest;
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import java.util.jar.Attributes;
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import java.util.jar.Attributes.Name;
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import java.net.JarURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.HttpURLConnection;
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import java.net.URLStreamHandler;
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import java.net.URLStreamHandlerFactory;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.InputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.security.AccessController;
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import java.security.AccessControlException;
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import java.security.CodeSigner;
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import java.security.Permission;
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import java.security.PrivilegedAction;
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import java.security.PrivilegedExceptionAction;
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import java.security.cert.Certificate;
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import sun.misc.FileURLMapper;
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/**
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* This class is used to maintain a search path of URLs for loading classes
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* and resources from both JAR files and directories.
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*
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* @author David Connelly
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*/
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public class URLClassPath {
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final static String USER_AGENT_JAVA_VERSION = "UA-Java-Version";
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final static String JAVA_VERSION;
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private static final boolean DEBUG;
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static {
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JAVA_VERSION = java.security.AccessController.doPrivileged(
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new sun.security.action.GetPropertyAction("java.version"));
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DEBUG = (java.security.AccessController.doPrivileged(
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new sun.security.action.GetPropertyAction("sun.misc.URLClassPath.debug")) != null);
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}
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/* The original search path of URLs. */
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private ArrayList path = new ArrayList();
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/* The stack of unopened URLs */
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Stack urls = new Stack();
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/* The resulting search path of Loaders */
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ArrayList loaders = new ArrayList();
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/* Map of each URL opened to its corresponding Loader */
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HashMap lmap = new HashMap();
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/* The jar protocol handler to use when creating new URLs */
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private URLStreamHandler jarHandler;
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/**
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* Creates a new URLClassPath for the given URLs. The URLs will be
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* searched in the order specified for classes and resources. A URL
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* ending with a '/' is assumed to refer to a directory. Otherwise,
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* the URL is assumed to refer to a JAR file.
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*
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* @param urls the directory and JAR file URLs to search for classes
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* and resources
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* @param factory the URLStreamHandlerFactory to use when creating new URLs
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*/
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public URLClassPath(URL[] urls, URLStreamHandlerFactory factory) {
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for (int i = 0; i < urls.length; i++) {
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path.add(urls[i]);
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}
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push(urls);
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if (factory != null) {
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jarHandler = factory.createURLStreamHandler("jar");
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}
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}
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public URLClassPath(URL[] urls) {
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this(urls, null);
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}
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/**
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* Appends the specified URL to the search path of directory and JAR
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* file URLs from which to load classes and resources.
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* <p>
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* If the URL specified is null or is already in the list of
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* URLs, then invoking this method has no effect.
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*/
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public void addURL(URL url) {
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synchronized (urls) {
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if (url == null || path.contains(url))
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return;
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urls.add(0, url);
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path.add(url);
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}
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}
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/**
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* Returns the original search path of URLs.
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*/
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public URL[] getURLs() {
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synchronized (urls) {
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return (URL[])path.toArray(new URL[path.size()]);
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}
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}
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/**
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* Finds the resource with the specified name on the URL search path
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* or null if not found or security check fails.
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*
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* @param name the name of the resource
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* @param check whether to perform a security check
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* @return a <code>URL</code> for the resource, or <code>null</code>
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* if the resource could not be found.
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*/
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public URL findResource(String name, boolean check) {
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Loader loader;
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for (int i = 0; (loader = getLoader(i)) != null; i++) {
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URL url = loader.findResource(name, check);
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if (url != null) {
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return url;
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}
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}
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return null;
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}
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/**
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* Finds the first Resource on the URL search path which has the specified
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* name. Returns null if no Resource could be found.
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*
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* @param name the name of the Resource
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* @param check whether to perform a security check
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* @return the Resource, or null if not found
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*/
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public Resource getResource(String name, boolean check) {
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if (DEBUG) {
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System.err.println("URLClassPath.getResource(\"" + name + "\")");
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}
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Loader loader;
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for (int i = 0; (loader = getLoader(i)) != null; i++) {
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Resource res = loader.getResource(name, check);
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if (res != null) {
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return res;
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}
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}
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return null;
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}
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/**
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* Finds all resources on the URL search path with the given name.
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* Returns an enumeration of the URL objects.
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*
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* @param name the resource name
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* @return an Enumeration of all the urls having the specified name
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*/
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public Enumeration findResources(final String name,
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final boolean check) {
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return new Enumeration() {
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private int index = 0;
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private URL url = null;
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private boolean next() {
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if (url != null) {
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return true;
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} else {
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Loader loader;
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while ((loader = getLoader(index++)) != null) {
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url = loader.findResource(name, check);
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if (url != null) {
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return true;
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}
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}
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return false;
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}
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}
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public boolean hasMoreElements() {
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return next();
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}
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public Object nextElement() {
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if (!next()) {
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throw new NoSuchElementException();
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}
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URL u = url;
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url = null;
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return u;
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}
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};
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}
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public Resource getResource(String name) {
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return getResource(name, true);
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}
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/**
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* Finds all resources on the URL search path with the given name.
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* Returns an enumeration of the Resource objects.
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*
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* @param name the resource name
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* @return an Enumeration of all the resources having the specified name
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*/
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public Enumeration getResources(final String name,
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final boolean check) {
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return new Enumeration() {
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private int index = 0;
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private Resource res = null;
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private boolean next() {
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if (res != null) {
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return true;
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} else {
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Loader loader;
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while ((loader = getLoader(index++)) != null) {
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res = loader.getResource(name, check);
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if (res != null) {
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return true;
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}
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}
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return false;
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}
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}
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public boolean hasMoreElements() {
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return next();
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}
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public Object nextElement() {
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if (!next()) {
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throw new NoSuchElementException();
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}
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Resource r = res;
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res = null;
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return r;
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}
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};
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}
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public Enumeration getResources(final String name) {
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return getResources(name, true);
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}
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/*
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* Returns the Loader at the specified position in the URL search
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* path. The URLs are opened and expanded as needed. Returns null
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* if the specified index is out of range.
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*/
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private synchronized Loader getLoader(int index) {
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// Expand URL search path until the request can be satisfied
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// or the URL stack is empty.
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while (loaders.size() < index + 1) {
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// Pop the next URL from the URL stack
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URL url;
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synchronized (urls) {
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if (urls.empty()) {
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return null;
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} else {
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url = (URL)urls.pop();
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}
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}
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// Skip this URL if it already has a Loader. (Loader
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// may be null in the case where URL has not been opened
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// but is referenced by a JAR index.)
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if (lmap.containsKey(url)) {
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continue;
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}
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// Otherwise, create a new Loader for the URL.
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Loader loader;
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try {
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loader = getLoader(url);
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// If the loader defines a local class path then add the
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// URLs to the list of URLs to be opened.
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URL[] urls = loader.getClassPath();
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if (urls != null) {
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push(urls);
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}
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} catch (IOException e) {
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// Silently ignore for now...
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continue;
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}
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// Finally, add the Loader to the search path.
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loaders.add(loader);
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lmap.put(url, loader);
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}
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return (Loader)loaders.get(index);
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}
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/*
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* Returns the Loader for the specified base URL.
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*/
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private Loader getLoader(final URL url) throws IOException {
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try {
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return (Loader)java.security.AccessController.doPrivileged
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(new java.security.PrivilegedExceptionAction() {
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public Object run() throws IOException {
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String file = url.getFile();
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if (file != null && file.endsWith("/")) {
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if ("file".equals(url.getProtocol())) {
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return new FileLoader(url);
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} else {
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return new Loader(url);
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}
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} else {
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return new JarLoader(url, jarHandler, lmap);
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}
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}
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});
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} catch (java.security.PrivilegedActionException pae) {
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throw (IOException)pae.getException();
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}
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358 |
}
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359 |
|
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360 |
/*
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* Pushes the specified URLs onto the list of unopened URLs.
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*/
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private void push(URL[] us) {
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synchronized (urls) {
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for (int i = us.length - 1; i >= 0; --i) {
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urls.push(us[i]);
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}
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368 |
}
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369 |
}
|
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370 |
|
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371 |
/**
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372 |
* Convert class path specification into an array of file URLs.
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373 |
*
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* The path of the file is encoded before conversion into URL
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375 |
* form so that reserved characters can safely appear in the path.
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376 |
*/
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377 |
public static URL[] pathToURLs(String path) {
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378 |
StringTokenizer st = new StringTokenizer(path, File.pathSeparator);
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379 |
URL[] urls = new URL[st.countTokens()];
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380 |
int count = 0;
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381 |
while (st.hasMoreTokens()) {
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382 |
File f = new File(st.nextToken());
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383 |
try {
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384 |
f = new File(f.getCanonicalPath());
|
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385 |
} catch (IOException x) {
|
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386 |
// use the non-canonicalized filename
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387 |
}
|
|
388 |
try {
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|
389 |
urls[count++] = ParseUtil.fileToEncodedURL(f);
|
|
390 |
} catch (IOException x) { }
|
|
391 |
}
|
|
392 |
|
|
393 |
if (urls.length != count) {
|
|
394 |
URL[] tmp = new URL[count];
|
|
395 |
System.arraycopy(urls, 0, tmp, 0, count);
|
|
396 |
urls = tmp;
|
|
397 |
}
|
|
398 |
return urls;
|
|
399 |
}
|
|
400 |
|
|
401 |
/*
|
|
402 |
* Check whether the resource URL should be returned.
|
|
403 |
* Return null on security check failure.
|
|
404 |
* Called by java.net.URLClassLoader.
|
|
405 |
*/
|
|
406 |
public URL checkURL(URL url) {
|
|
407 |
try {
|
|
408 |
check(url);
|
|
409 |
} catch (Exception e) {
|
|
410 |
return null;
|
|
411 |
}
|
|
412 |
|
|
413 |
return url;
|
|
414 |
}
|
|
415 |
|
|
416 |
/*
|
|
417 |
* Check whether the resource URL should be returned.
|
|
418 |
* Throw exception on failure.
|
|
419 |
* Called internally within this file.
|
|
420 |
*/
|
|
421 |
static void check(URL url) throws IOException {
|
|
422 |
SecurityManager security = System.getSecurityManager();
|
|
423 |
if (security != null) {
|
|
424 |
URLConnection urlConnection = url.openConnection();
|
|
425 |
Permission perm = urlConnection.getPermission();
|
|
426 |
if (perm != null) {
|
|
427 |
try {
|
|
428 |
security.checkPermission(perm);
|
|
429 |
} catch (SecurityException se) {
|
|
430 |
// fallback to checkRead/checkConnect for pre 1.2
|
|
431 |
// security managers
|
|
432 |
if ((perm instanceof java.io.FilePermission) &&
|
|
433 |
perm.getActions().indexOf("read") != -1) {
|
|
434 |
security.checkRead(perm.getName());
|
|
435 |
} else if ((perm instanceof
|
|
436 |
java.net.SocketPermission) &&
|
|
437 |
perm.getActions().indexOf("connect") != -1) {
|
|
438 |
URL locUrl = url;
|
|
439 |
if (urlConnection instanceof JarURLConnection) {
|
|
440 |
locUrl = ((JarURLConnection)urlConnection).getJarFileURL();
|
|
441 |
}
|
|
442 |
security.checkConnect(locUrl.getHost(),
|
|
443 |
locUrl.getPort());
|
|
444 |
} else {
|
|
445 |
throw se;
|
|
446 |
}
|
|
447 |
}
|
|
448 |
}
|
|
449 |
}
|
|
450 |
}
|
|
451 |
|
|
452 |
/**
|
|
453 |
* Inner class used to represent a loader of resources and classes
|
|
454 |
* from a base URL.
|
|
455 |
*/
|
|
456 |
private static class Loader {
|
|
457 |
private final URL base;
|
|
458 |
|
|
459 |
/*
|
|
460 |
* Creates a new Loader for the specified URL.
|
|
461 |
*/
|
|
462 |
Loader(URL url) {
|
|
463 |
base = url;
|
|
464 |
}
|
|
465 |
|
|
466 |
/*
|
|
467 |
* Returns the base URL for this Loader.
|
|
468 |
*/
|
|
469 |
URL getBaseURL() {
|
|
470 |
return base;
|
|
471 |
}
|
|
472 |
|
|
473 |
URL findResource(final String name, boolean check) {
|
|
474 |
URL url;
|
|
475 |
try {
|
|
476 |
url = new URL(base, ParseUtil.encodePath(name, false));
|
|
477 |
} catch (MalformedURLException e) {
|
|
478 |
throw new IllegalArgumentException("name");
|
|
479 |
}
|
|
480 |
|
|
481 |
try {
|
|
482 |
if (check) {
|
|
483 |
URLClassPath.check(url);
|
|
484 |
}
|
|
485 |
|
|
486 |
/*
|
|
487 |
* For a HTTP connection we use the HEAD method to
|
|
488 |
* check if the resource exists.
|
|
489 |
*/
|
|
490 |
URLConnection uc = url.openConnection();
|
|
491 |
if (uc instanceof HttpURLConnection) {
|
|
492 |
HttpURLConnection hconn = (HttpURLConnection)uc;
|
|
493 |
hconn.setRequestMethod("HEAD");
|
|
494 |
if (hconn.getResponseCode() >= HttpURLConnection.HTTP_BAD_REQUEST) {
|
|
495 |
return null;
|
|
496 |
}
|
|
497 |
} else {
|
|
498 |
// our best guess for the other cases
|
|
499 |
InputStream is = url.openStream();
|
|
500 |
is.close();
|
|
501 |
}
|
|
502 |
return url;
|
|
503 |
} catch (Exception e) {
|
|
504 |
return null;
|
|
505 |
}
|
|
506 |
}
|
|
507 |
|
|
508 |
Resource getResource(final String name, boolean check) {
|
|
509 |
final URL url;
|
|
510 |
try {
|
|
511 |
url = new URL(base, ParseUtil.encodePath(name, false));
|
|
512 |
} catch (MalformedURLException e) {
|
|
513 |
throw new IllegalArgumentException("name");
|
|
514 |
}
|
|
515 |
final URLConnection uc;
|
|
516 |
try {
|
|
517 |
if (check) {
|
|
518 |
URLClassPath.check(url);
|
|
519 |
}
|
|
520 |
uc = url.openConnection();
|
|
521 |
InputStream in = uc.getInputStream();
|
|
522 |
} catch (Exception e) {
|
|
523 |
return null;
|
|
524 |
}
|
|
525 |
return new Resource() {
|
|
526 |
public String getName() { return name; }
|
|
527 |
public URL getURL() { return url; }
|
|
528 |
public URL getCodeSourceURL() { return base; }
|
|
529 |
public InputStream getInputStream() throws IOException {
|
|
530 |
return uc.getInputStream();
|
|
531 |
}
|
|
532 |
public int getContentLength() throws IOException {
|
|
533 |
return uc.getContentLength();
|
|
534 |
}
|
|
535 |
};
|
|
536 |
}
|
|
537 |
|
|
538 |
/*
|
|
539 |
* Returns the Resource for the specified name, or null if not
|
|
540 |
* found or the caller does not have the permission to get the
|
|
541 |
* resource.
|
|
542 |
*/
|
|
543 |
Resource getResource(final String name) {
|
|
544 |
return getResource(name, true);
|
|
545 |
}
|
|
546 |
|
|
547 |
/*
|
|
548 |
* Returns the local class path for this loader, or null if none.
|
|
549 |
*/
|
|
550 |
URL[] getClassPath() throws IOException {
|
|
551 |
return null;
|
|
552 |
}
|
|
553 |
}
|
|
554 |
|
|
555 |
/*
|
|
556 |
* Inner class used to represent a Loader of resources from a JAR URL.
|
|
557 |
*/
|
|
558 |
static class JarLoader extends Loader {
|
|
559 |
private JarFile jar;
|
|
560 |
private URL csu;
|
|
561 |
private JarIndex index;
|
|
562 |
private MetaIndex metaIndex;
|
|
563 |
private URLStreamHandler handler;
|
|
564 |
private HashMap lmap;
|
|
565 |
|
|
566 |
/*
|
|
567 |
* Creates a new JarLoader for the specified URL referring to
|
|
568 |
* a JAR file.
|
|
569 |
*/
|
|
570 |
JarLoader(URL url, URLStreamHandler jarHandler, HashMap loaderMap)
|
|
571 |
throws IOException
|
|
572 |
{
|
|
573 |
super(new URL("jar", "", -1, url + "!/", jarHandler));
|
|
574 |
csu = url;
|
|
575 |
handler = jarHandler;
|
|
576 |
lmap = loaderMap;
|
|
577 |
|
|
578 |
if (!isOptimizable(url)) {
|
|
579 |
ensureOpen();
|
|
580 |
} else {
|
|
581 |
String fileName = url.getFile();
|
|
582 |
if (fileName != null) {
|
|
583 |
fileName = ParseUtil.decode(fileName);
|
|
584 |
File f = new File(fileName);
|
|
585 |
metaIndex = MetaIndex.forJar(f);
|
|
586 |
// If the meta index is found but the file is not
|
|
587 |
// installed, set metaIndex to null. A typical
|
|
588 |
// senario is charsets.jar which won't be installed
|
|
589 |
// when the user is running in certain locale environment.
|
|
590 |
// The side effect of null metaIndex will cause
|
|
591 |
// ensureOpen get called so that IOException is thrown.
|
|
592 |
if (metaIndex != null && !f.exists()) {
|
|
593 |
metaIndex = null;
|
|
594 |
}
|
|
595 |
}
|
|
596 |
|
|
597 |
// metaIndex is null when either there is no such jar file
|
|
598 |
// entry recorded in meta-index file or such jar file is
|
|
599 |
// missing in JRE. See bug 6340399.
|
|
600 |
if (metaIndex == null) {
|
|
601 |
ensureOpen();
|
|
602 |
}
|
|
603 |
}
|
|
604 |
}
|
|
605 |
|
|
606 |
JarFile getJarFile () {
|
|
607 |
return jar;
|
|
608 |
}
|
|
609 |
|
|
610 |
private boolean isOptimizable(URL url) {
|
|
611 |
return "file".equals(url.getProtocol());
|
|
612 |
}
|
|
613 |
|
|
614 |
private void ensureOpen() throws IOException {
|
|
615 |
if (jar == null) {
|
|
616 |
try {
|
|
617 |
java.security.AccessController.doPrivileged(
|
|
618 |
new java.security.PrivilegedExceptionAction() {
|
|
619 |
public Object run() throws IOException {
|
|
620 |
if (DEBUG) {
|
|
621 |
System.err.println("Opening " + csu);
|
|
622 |
Thread.dumpStack();
|
|
623 |
}
|
|
624 |
|
|
625 |
jar = getJarFile(csu);
|
|
626 |
index = JarIndex.getJarIndex(jar, metaIndex);
|
|
627 |
if (index != null) {
|
|
628 |
String[] jarfiles = index.getJarFiles();
|
|
629 |
// Add all the dependent URLs to the lmap so that loaders
|
|
630 |
// will not be created for them by URLClassPath.getLoader(int)
|
|
631 |
// if the same URL occurs later on the main class path. We set
|
|
632 |
// Loader to null here to avoid creating a Loader for each
|
|
633 |
// URL until we actually need to try to load something from them.
|
|
634 |
for(int i = 0; i < jarfiles.length; i++) {
|
|
635 |
try {
|
|
636 |
URL jarURL = new URL(csu, jarfiles[i]);
|
|
637 |
// If a non-null loader already exists, leave it alone.
|
|
638 |
if (!lmap.containsKey(jarURL)) {
|
|
639 |
lmap.put(jarURL, null);
|
|
640 |
}
|
|
641 |
} catch (MalformedURLException e) {
|
|
642 |
continue;
|
|
643 |
}
|
|
644 |
}
|
|
645 |
}
|
|
646 |
return null;
|
|
647 |
}
|
|
648 |
}
|
|
649 |
);
|
|
650 |
} catch (java.security.PrivilegedActionException pae) {
|
|
651 |
throw (IOException)pae.getException();
|
|
652 |
}
|
|
653 |
}
|
|
654 |
}
|
|
655 |
|
|
656 |
private JarFile getJarFile(URL url) throws IOException {
|
|
657 |
// Optimize case where url refers to a local jar file
|
|
658 |
if (isOptimizable(url)) {
|
|
659 |
FileURLMapper p = new FileURLMapper (url);
|
|
660 |
if (!p.exists()) {
|
|
661 |
throw new FileNotFoundException(p.getPath());
|
|
662 |
}
|
|
663 |
return new JarFile (p.getPath());
|
|
664 |
}
|
|
665 |
URLConnection uc = getBaseURL().openConnection();
|
|
666 |
uc.setRequestProperty(USER_AGENT_JAVA_VERSION, JAVA_VERSION);
|
|
667 |
return ((JarURLConnection)uc).getJarFile();
|
|
668 |
}
|
|
669 |
|
|
670 |
/*
|
|
671 |
* Returns the index of this JarLoader if it exists.
|
|
672 |
*/
|
|
673 |
JarIndex getIndex() {
|
|
674 |
try {
|
|
675 |
ensureOpen();
|
|
676 |
} catch (IOException e) {
|
|
677 |
throw (InternalError) new InternalError().initCause(e);
|
|
678 |
}
|
|
679 |
return index;
|
|
680 |
}
|
|
681 |
|
|
682 |
/*
|
|
683 |
* Creates the resource and if the check flag is set to true, checks if
|
|
684 |
* is its okay to return the resource.
|
|
685 |
*/
|
|
686 |
Resource checkResource(final String name, boolean check,
|
|
687 |
final JarEntry entry) {
|
|
688 |
|
|
689 |
final URL url;
|
|
690 |
try {
|
|
691 |
url = new URL(getBaseURL(), ParseUtil.encodePath(name, false));
|
|
692 |
if (check) {
|
|
693 |
URLClassPath.check(url);
|
|
694 |
}
|
|
695 |
} catch (MalformedURLException e) {
|
|
696 |
return null;
|
|
697 |
// throw new IllegalArgumentException("name");
|
|
698 |
} catch (IOException e) {
|
|
699 |
return null;
|
|
700 |
} catch (AccessControlException e) {
|
|
701 |
return null;
|
|
702 |
}
|
|
703 |
|
|
704 |
return new Resource() {
|
|
705 |
public String getName() { return name; }
|
|
706 |
public URL getURL() { return url; }
|
|
707 |
public URL getCodeSourceURL() { return csu; }
|
|
708 |
public InputStream getInputStream() throws IOException
|
|
709 |
{ return jar.getInputStream(entry); }
|
|
710 |
public int getContentLength()
|
|
711 |
{ return (int)entry.getSize(); }
|
|
712 |
public Manifest getManifest() throws IOException
|
|
713 |
{ return jar.getManifest(); };
|
|
714 |
public Certificate[] getCertificates()
|
|
715 |
{ return entry.getCertificates(); };
|
|
716 |
public CodeSigner[] getCodeSigners()
|
|
717 |
{ return entry.getCodeSigners(); };
|
|
718 |
};
|
|
719 |
}
|
|
720 |
|
|
721 |
|
|
722 |
/*
|
|
723 |
* Returns true iff atleast one resource in the jar file has the same
|
|
724 |
* package name as that of the specified resource name.
|
|
725 |
*/
|
|
726 |
boolean validIndex(final String name) {
|
|
727 |
String packageName = name;
|
|
728 |
int pos;
|
|
729 |
if((pos = name.lastIndexOf("/")) != -1) {
|
|
730 |
packageName = name.substring(0, pos);
|
|
731 |
}
|
|
732 |
|
|
733 |
String entryName;
|
|
734 |
ZipEntry entry;
|
|
735 |
Enumeration enum_ = jar.entries();
|
|
736 |
while (enum_.hasMoreElements()) {
|
|
737 |
entry = (ZipEntry)enum_.nextElement();
|
|
738 |
entryName = entry.getName();
|
|
739 |
if((pos = entryName.lastIndexOf("/")) != -1)
|
|
740 |
entryName = entryName.substring(0, pos);
|
|
741 |
if (entryName.equals(packageName)) {
|
|
742 |
return true;
|
|
743 |
}
|
|
744 |
}
|
|
745 |
return false;
|
|
746 |
}
|
|
747 |
|
|
748 |
/*
|
|
749 |
* Returns the URL for a resource with the specified name
|
|
750 |
*/
|
|
751 |
URL findResource(final String name, boolean check) {
|
|
752 |
Resource rsc = getResource(name, check);
|
|
753 |
if (rsc != null) {
|
|
754 |
return rsc.getURL();
|
|
755 |
}
|
|
756 |
return null;
|
|
757 |
}
|
|
758 |
|
|
759 |
/*
|
|
760 |
* Returns the JAR Resource for the specified name.
|
|
761 |
*/
|
|
762 |
Resource getResource(final String name, boolean check) {
|
|
763 |
if (metaIndex != null) {
|
|
764 |
if (!metaIndex.mayContain(name)) {
|
|
765 |
return null;
|
|
766 |
}
|
|
767 |
}
|
|
768 |
|
|
769 |
try {
|
|
770 |
ensureOpen();
|
|
771 |
} catch (IOException e) {
|
|
772 |
throw (InternalError) new InternalError().initCause(e);
|
|
773 |
}
|
|
774 |
final JarEntry entry = jar.getJarEntry(name);
|
|
775 |
if (entry != null)
|
|
776 |
return checkResource(name, check, entry);
|
|
777 |
|
|
778 |
if (index == null)
|
|
779 |
return null;
|
|
780 |
|
|
781 |
HashSet visited = new HashSet();
|
|
782 |
return getResource(name, check, visited);
|
|
783 |
}
|
|
784 |
|
|
785 |
/*
|
|
786 |
* Version of getResource() that tracks the jar files that have been
|
|
787 |
* visited by linking through the index files. This helper method uses
|
|
788 |
* a HashSet to store the URLs of jar files that have been searched and
|
|
789 |
* uses it to avoid going into an infinite loop, looking for a
|
|
790 |
* non-existent resource
|
|
791 |
*/
|
|
792 |
Resource getResource(final String name, boolean check,
|
|
793 |
Set visited) {
|
|
794 |
|
|
795 |
Resource res;
|
|
796 |
Object[] jarFiles;
|
|
797 |
boolean done = false;
|
|
798 |
int count = 0;
|
|
799 |
LinkedList jarFilesList = null;
|
|
800 |
|
|
801 |
/* If there no jar files in the index that can potential contain
|
|
802 |
* this resource then return immediately.
|
|
803 |
*/
|
|
804 |
if((jarFilesList = index.get(name)) == null)
|
|
805 |
return null;
|
|
806 |
|
|
807 |
do {
|
|
808 |
jarFiles = jarFilesList.toArray();
|
|
809 |
int size = jarFilesList.size();
|
|
810 |
/* loop through the mapped jar file list */
|
|
811 |
while(count < size) {
|
|
812 |
String jarName = (String)jarFiles[count++];
|
|
813 |
JarLoader newLoader;
|
|
814 |
final URL url;
|
|
815 |
|
|
816 |
try{
|
|
817 |
url = new URL(csu, jarName);
|
|
818 |
if ((newLoader = (JarLoader)lmap.get(url)) == null) {
|
|
819 |
/* no loader has been set up for this jar file
|
|
820 |
* before
|
|
821 |
*/
|
|
822 |
newLoader = (JarLoader)
|
|
823 |
AccessController.doPrivileged(
|
|
824 |
new PrivilegedExceptionAction() {
|
|
825 |
public Object run() throws IOException {
|
|
826 |
return new JarLoader(url, handler,
|
|
827 |
lmap);
|
|
828 |
}
|
|
829 |
});
|
|
830 |
|
|
831 |
/* this newly opened jar file has its own index,
|
|
832 |
* merge it into the parent's index, taking into
|
|
833 |
* account the relative path.
|
|
834 |
*/
|
|
835 |
JarIndex newIndex = newLoader.getIndex();
|
|
836 |
if(newIndex != null) {
|
|
837 |
int pos = jarName.lastIndexOf("/");
|
|
838 |
newIndex.merge(this.index, (pos == -1 ?
|
|
839 |
null : jarName.substring(0, pos + 1)));
|
|
840 |
}
|
|
841 |
|
|
842 |
/* put it in the global hashtable */
|
|
843 |
lmap.put(url, newLoader);
|
|
844 |
}
|
|
845 |
} catch (java.security.PrivilegedActionException pae) {
|
|
846 |
continue;
|
|
847 |
} catch (MalformedURLException e) {
|
|
848 |
continue;
|
|
849 |
}
|
|
850 |
|
|
851 |
|
|
852 |
/* Note that the addition of the url to the list of visited
|
|
853 |
* jars incorporates a check for presence in the hashmap
|
|
854 |
*/
|
|
855 |
boolean visitedURL = !visited.add(url);
|
|
856 |
if (!visitedURL) {
|
|
857 |
try {
|
|
858 |
newLoader.ensureOpen();
|
|
859 |
} catch (IOException e) {
|
|
860 |
throw (InternalError) new InternalError().initCause(e);
|
|
861 |
}
|
|
862 |
final JarEntry entry = newLoader.jar.getJarEntry(name);
|
|
863 |
if (entry != null) {
|
|
864 |
return newLoader.checkResource(name, check, entry);
|
|
865 |
}
|
|
866 |
|
|
867 |
/* Verify that at least one other resource with the
|
|
868 |
* same package name as the lookedup resource is
|
|
869 |
* present in the new jar
|
|
870 |
*/
|
|
871 |
if (!newLoader.validIndex(name)) {
|
|
872 |
/* the mapping is wrong */
|
|
873 |
throw new InvalidJarIndexException("Invalid index");
|
|
874 |
}
|
|
875 |
}
|
|
876 |
|
|
877 |
/* If newLoader is the current loader or if it is a
|
|
878 |
* loader that has already been searched or if the new
|
|
879 |
* loader does not have an index then skip it
|
|
880 |
* and move on to the next loader.
|
|
881 |
*/
|
|
882 |
if (visitedURL || newLoader == this ||
|
|
883 |
newLoader.getIndex() == null) {
|
|
884 |
continue;
|
|
885 |
}
|
|
886 |
|
|
887 |
/* Process the index of the new loader
|
|
888 |
*/
|
|
889 |
if((res = newLoader.getResource(name, check, visited))
|
|
890 |
!= null) {
|
|
891 |
return res;
|
|
892 |
}
|
|
893 |
}
|
|
894 |
// Get the list of jar files again as the list could have grown
|
|
895 |
// due to merging of index files.
|
|
896 |
jarFilesList = index.get(name);
|
|
897 |
|
|
898 |
// If the count is unchanged, we are done.
|
|
899 |
} while(count < jarFilesList.size());
|
|
900 |
return null;
|
|
901 |
}
|
|
902 |
|
|
903 |
|
|
904 |
/*
|
|
905 |
* Returns the JAR file local class path, or null if none.
|
|
906 |
*/
|
|
907 |
URL[] getClassPath() throws IOException {
|
|
908 |
if (index != null) {
|
|
909 |
return null;
|
|
910 |
}
|
|
911 |
|
|
912 |
if (metaIndex != null) {
|
|
913 |
return null;
|
|
914 |
}
|
|
915 |
|
|
916 |
ensureOpen();
|
|
917 |
parseExtensionsDependencies();
|
|
918 |
if (SharedSecrets.javaUtilJarAccess().jarFileHasClassPathAttribute(jar)) { // Only get manifest when necessary
|
|
919 |
Manifest man = jar.getManifest();
|
|
920 |
if (man != null) {
|
|
921 |
Attributes attr = man.getMainAttributes();
|
|
922 |
if (attr != null) {
|
|
923 |
String value = attr.getValue(Name.CLASS_PATH);
|
|
924 |
if (value != null) {
|
|
925 |
return parseClassPath(csu, value);
|
|
926 |
}
|
|
927 |
}
|
|
928 |
}
|
|
929 |
}
|
|
930 |
return null;
|
|
931 |
}
|
|
932 |
|
|
933 |
/*
|
|
934 |
* parse the standard extension dependencies
|
|
935 |
*/
|
|
936 |
private void parseExtensionsDependencies() throws IOException {
|
|
937 |
ExtensionDependency.checkExtensionsDependencies(jar);
|
|
938 |
}
|
|
939 |
|
|
940 |
/*
|
|
941 |
* Parses value of the Class-Path manifest attribute and returns
|
|
942 |
* an array of URLs relative to the specified base URL.
|
|
943 |
*/
|
|
944 |
private URL[] parseClassPath(URL base, String value)
|
|
945 |
throws MalformedURLException
|
|
946 |
{
|
|
947 |
StringTokenizer st = new StringTokenizer(value);
|
|
948 |
URL[] urls = new URL[st.countTokens()];
|
|
949 |
int i = 0;
|
|
950 |
while (st.hasMoreTokens()) {
|
|
951 |
String path = st.nextToken();
|
|
952 |
urls[i] = new URL(base, path);
|
|
953 |
i++;
|
|
954 |
}
|
|
955 |
return urls;
|
|
956 |
}
|
|
957 |
}
|
|
958 |
|
|
959 |
/*
|
|
960 |
* Inner class used to represent a loader of classes and resources
|
|
961 |
* from a file URL that refers to a directory.
|
|
962 |
*/
|
|
963 |
private static class FileLoader extends Loader {
|
|
964 |
private File dir;
|
|
965 |
|
|
966 |
FileLoader(URL url) throws IOException {
|
|
967 |
super(url);
|
|
968 |
if (!"file".equals(url.getProtocol())) {
|
|
969 |
throw new IllegalArgumentException("url");
|
|
970 |
}
|
|
971 |
String path = url.getFile().replace('/', File.separatorChar);
|
|
972 |
path = ParseUtil.decode(path);
|
|
973 |
dir = new File(path);
|
|
974 |
}
|
|
975 |
|
|
976 |
/*
|
|
977 |
* Returns the URL for a resource with the specified name
|
|
978 |
*/
|
|
979 |
URL findResource(final String name, boolean check) {
|
|
980 |
Resource rsc = getResource(name, check);
|
|
981 |
if (rsc != null) {
|
|
982 |
return rsc.getURL();
|
|
983 |
}
|
|
984 |
return null;
|
|
985 |
}
|
|
986 |
|
|
987 |
Resource getResource(final String name, boolean check) {
|
|
988 |
final URL url;
|
|
989 |
try {
|
|
990 |
URL normalizedBase = new URL(getBaseURL(), ".");
|
|
991 |
url = new URL(getBaseURL(), ParseUtil.encodePath(name, false));
|
|
992 |
|
|
993 |
if (url.getFile().startsWith(normalizedBase.getFile()) == false) {
|
|
994 |
// requested resource had ../..'s in path
|
|
995 |
return null;
|
|
996 |
}
|
|
997 |
|
|
998 |
if (check)
|
|
999 |
URLClassPath.check(url);
|
|
1000 |
final File file =
|
|
1001 |
new File(dir, name.replace('/', File.separatorChar));
|
|
1002 |
if (file.exists()) {
|
|
1003 |
return new Resource() {
|
|
1004 |
public String getName() { return name; };
|
|
1005 |
public URL getURL() { return url; };
|
|
1006 |
public URL getCodeSourceURL() { return getBaseURL(); };
|
|
1007 |
public InputStream getInputStream() throws IOException
|
|
1008 |
{ return new FileInputStream(file); };
|
|
1009 |
public int getContentLength() throws IOException
|
|
1010 |
{ return (int)file.length(); };
|
|
1011 |
};
|
|
1012 |
}
|
|
1013 |
} catch (Exception e) {
|
|
1014 |
return null;
|
|
1015 |
}
|
|
1016 |
return null;
|
|
1017 |
}
|
|
1018 |
}
|
|
1019 |
}
|