--- a/jdk/src/java.base/share/classes/sun/misc/URLClassPath.java Thu Mar 24 02:04:14 2016 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1080 +0,0 @@
-/*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.misc;
-
-import java.io.Closeable;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.HttpURLConnection;
-import java.net.JarURLConnection;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.net.URLConnection;
-import java.net.URLStreamHandler;
-import java.net.URLStreamHandlerFactory;
-import java.security.AccessControlException;
-import java.security.AccessController;
-import java.security.CodeSigner;
-import java.security.Permission;
-import java.security.PrivilegedExceptionAction;
-import java.security.cert.Certificate;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Enumeration;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.NoSuchElementException;
-import java.util.Set;
-import java.util.Stack;
-import java.util.StringTokenizer;
-import java.util.jar.JarFile;
-import java.util.zip.ZipEntry;
-import java.util.jar.JarEntry;
-import java.util.jar.Manifest;
-import java.util.jar.Attributes;
-import java.util.jar.Attributes.Name;
-import java.util.zip.ZipFile;
-
-import jdk.internal.misc.JavaUtilZipFileAccess;
-import jdk.internal.misc.SharedSecrets;
-import sun.net.util.URLUtil;
-import sun.net.www.ParseUtil;
-
-/**
- * This class is used to maintain a search path of URLs for loading classes
- * and resources from both JAR files and directories.
- *
- * @author David Connelly
- */
-public class URLClassPath {
- private static final String USER_AGENT_JAVA_VERSION = "UA-Java-Version";
- private static final String JAVA_HOME;
- private static final String JAVA_VERSION;
- private static final boolean DEBUG;
- private static final boolean DISABLE_JAR_CHECKING;
-
- static {
- JAVA_HOME = java.security.AccessController.doPrivileged(
- new sun.security.action.GetPropertyAction("java.home"));
- JAVA_VERSION = java.security.AccessController.doPrivileged(
- new sun.security.action.GetPropertyAction("java.version"));
- DEBUG = (java.security.AccessController.doPrivileged(
- new sun.security.action.GetPropertyAction("sun.misc.URLClassPath.debug")) != null);
- String p = java.security.AccessController.doPrivileged(
- new sun.security.action.GetPropertyAction("sun.misc.URLClassPath.disableJarChecking"));
- DISABLE_JAR_CHECKING = p != null ? p.equals("true") || p.equals("") : false;
- }
-
- /* The original search path of URLs. */
- private ArrayList<URL> path = new ArrayList<>();
-
- /* The stack of unopened URLs */
- Stack<URL> urls = new Stack<>();
-
- /* The resulting search path of Loaders */
- ArrayList<Loader> loaders = new ArrayList<>();
-
- /* Map of each URL opened to its corresponding Loader */
- HashMap<String, Loader> lmap = new HashMap<>();
-
- /* The jar protocol handler to use when creating new URLs */
- private URLStreamHandler jarHandler;
-
- /* Whether this URLClassLoader has been closed yet */
- private boolean closed = false;
-
- /**
- * Creates a new URLClassPath for the given URLs. The URLs will be
- * searched in the order specified for classes and resources. A URL
- * ending with a '/' is assumed to refer to a directory. Otherwise,
- * the URL is assumed to refer to a JAR file.
- *
- * @param urls the directory and JAR file URLs to search for classes
- * and resources
- * @param factory the URLStreamHandlerFactory to use when creating new URLs
- */
- public URLClassPath(URL[] urls, URLStreamHandlerFactory factory) {
- for (int i = 0; i < urls.length; i++) {
- path.add(urls[i]);
- }
- push(urls);
- if (factory != null) {
- jarHandler = factory.createURLStreamHandler("jar");
- }
- }
-
- public URLClassPath(URL[] urls) {
- this(urls, null);
- }
-
- public synchronized List<IOException> closeLoaders() {
- if (closed) {
- return Collections.emptyList();
- }
- List<IOException> result = new LinkedList<>();
- for (Loader loader : loaders) {
- try {
- loader.close();
- } catch (IOException e) {
- result.add (e);
- }
- }
- closed = true;
- return result;
- }
-
- /**
- * Appends the specified URL to the search path of directory and JAR
- * file URLs from which to load classes and resources.
- * <p>
- * If the URL specified is null or is already in the list of
- * URLs, then invoking this method has no effect.
- */
- public synchronized void addURL(URL url) {
- if (closed)
- return;
- synchronized (urls) {
- if (url == null || path.contains(url))
- return;
-
- urls.add(0, url);
- path.add(url);
- }
- }
-
- /**
- * Returns the original search path of URLs.
- */
- public URL[] getURLs() {
- synchronized (urls) {
- return path.toArray(new URL[path.size()]);
- }
- }
-
- /**
- * Finds the resource with the specified name on the URL search path
- * or null if not found or security check fails.
- *
- * @param name the name of the resource
- * @param check whether to perform a security check
- * @return a <code>URL</code> for the resource, or <code>null</code>
- * if the resource could not be found.
- */
- public URL findResource(String name, boolean check) {
- Loader loader;
- for (int i = 0; (loader = getLoader(i)) != null; i++) {
- URL url = loader.findResource(name, check);
- if (url != null) {
- return url;
- }
- }
- return null;
- }
-
- /**
- * Finds the first Resource on the URL search path which has the specified
- * name. Returns null if no Resource could be found.
- *
- * @param name the name of the Resource
- * @param check whether to perform a security check
- * @return the Resource, or null if not found
- */
- public Resource getResource(String name, boolean check) {
- if (DEBUG) {
- System.err.println("URLClassPath.getResource(\"" + name + "\")");
- }
-
- Loader loader;
- for (int i = 0; (loader = getLoader(i)) != null; i++) {
- Resource res = loader.getResource(name, check);
- if (res != null) {
- return res;
- }
- }
- return null;
- }
-
- /**
- * Finds all resources on the URL search path with the given name.
- * Returns an enumeration of the URL objects.
- *
- * @param name the resource name
- * @return an Enumeration of all the urls having the specified name
- */
- public Enumeration<URL> findResources(final String name,
- final boolean check) {
- return new Enumeration<>() {
- private int index = 0;
- private URL url = null;
-
- private boolean next() {
- if (url != null) {
- return true;
- } else {
- Loader loader;
- while ((loader = getLoader(index++)) != null) {
- url = loader.findResource(name, check);
- if (url != null) {
- return true;
- }
- }
- return false;
- }
- }
-
- public boolean hasMoreElements() {
- return next();
- }
-
- public URL nextElement() {
- if (!next()) {
- throw new NoSuchElementException();
- }
- URL u = url;
- url = null;
- return u;
- }
- };
- }
-
- public Resource getResource(String name) {
- return getResource(name, true);
- }
-
- /**
- * Finds all resources on the URL search path with the given name.
- * Returns an enumeration of the Resource objects.
- *
- * @param name the resource name
- * @return an Enumeration of all the resources having the specified name
- */
- public Enumeration<Resource> getResources(final String name,
- final boolean check) {
- return new Enumeration<>() {
- private int index = 0;
- private Resource res = null;
-
- private boolean next() {
- if (res != null) {
- return true;
- } else {
- Loader loader;
- while ((loader = getLoader(index++)) != null) {
- res = loader.getResource(name, check);
- if (res != null) {
- return true;
- }
- }
- return false;
- }
- }
-
- public boolean hasMoreElements() {
- return next();
- }
-
- public Resource nextElement() {
- if (!next()) {
- throw new NoSuchElementException();
- }
- Resource r = res;
- res = null;
- return r;
- }
- };
- }
-
- public Enumeration<Resource> getResources(final String name) {
- return getResources(name, true);
- }
-
- /*
- * Returns the Loader at the specified position in the URL search
- * path. The URLs are opened and expanded as needed. Returns null
- * if the specified index is out of range.
- */
- private synchronized Loader getLoader(int index) {
- if (closed) {
- return null;
- }
- // Expand URL search path until the request can be satisfied
- // or the URL stack is empty.
- while (loaders.size() < index + 1) {
- // Pop the next URL from the URL stack
- URL url;
- synchronized (urls) {
- if (urls.empty()) {
- return null;
- } else {
- url = urls.pop();
- }
- }
- // Skip this URL if it already has a Loader. (Loader
- // may be null in the case where URL has not been opened
- // but is referenced by a JAR index.)
- String urlNoFragString = URLUtil.urlNoFragString(url);
- if (lmap.containsKey(urlNoFragString)) {
- continue;
- }
- // Otherwise, create a new Loader for the URL.
- Loader loader;
- try {
- loader = getLoader(url);
- // If the loader defines a local class path then add the
- // URLs to the list of URLs to be opened.
- URL[] urls = loader.getClassPath();
- if (urls != null) {
- push(urls);
- }
- } catch (IOException e) {
- // Silently ignore for now...
- continue;
- }
- // Finally, add the Loader to the search path.
- loaders.add(loader);
- lmap.put(urlNoFragString, loader);
- }
- return loaders.get(index);
- }
-
- /*
- * Returns the Loader for the specified base URL.
- */
- private Loader getLoader(final URL url) throws IOException {
- try {
- return java.security.AccessController.doPrivileged(
- new java.security.PrivilegedExceptionAction<>() {
- public Loader run() throws IOException {
- String file = url.getFile();
- if (file != null && file.endsWith("/")) {
- if ("file".equals(url.getProtocol())) {
- return new FileLoader(url);
- } else {
- return new Loader(url);
- }
- } else {
- return new JarLoader(url, jarHandler, lmap);
- }
- }
- });
- } catch (java.security.PrivilegedActionException pae) {
- throw (IOException)pae.getException();
- }
- }
-
- /*
- * Pushes the specified URLs onto the list of unopened URLs.
- */
- private void push(URL[] us) {
- synchronized (urls) {
- for (int i = us.length - 1; i >= 0; --i) {
- urls.push(us[i]);
- }
- }
- }
-
- /**
- * Convert class path specification into an array of file URLs.
- *
- * The path of the file is encoded before conversion into URL
- * form so that reserved characters can safely appear in the path.
- */
- public static URL[] pathToURLs(String path) {
- StringTokenizer st = new StringTokenizer(path, File.pathSeparator);
- URL[] urls = new URL[st.countTokens()];
- int count = 0;
- while (st.hasMoreTokens()) {
- File f = new File(st.nextToken());
- try {
- f = new File(f.getCanonicalPath());
- } catch (IOException x) {
- // use the non-canonicalized filename
- }
- try {
- urls[count++] = ParseUtil.fileToEncodedURL(f);
- } catch (IOException x) { }
- }
-
- if (urls.length != count) {
- URL[] tmp = new URL[count];
- System.arraycopy(urls, 0, tmp, 0, count);
- urls = tmp;
- }
- return urls;
- }
-
- /*
- * Check whether the resource URL should be returned.
- * Return null on security check failure.
- * Called by java.net.URLClassLoader.
- */
- public static URL checkURL(URL url) {
- if (url != null) {
- try {
- check(url);
- } catch (Exception e) {
- return null;
- }
- }
- return url;
- }
-
- /*
- * Check whether the resource URL should be returned.
- * Throw exception on failure.
- * Called internally within this file.
- */
- public static void check(URL url) throws IOException {
- SecurityManager security = System.getSecurityManager();
- if (security != null) {
- URLConnection urlConnection = url.openConnection();
- Permission perm = urlConnection.getPermission();
- if (perm != null) {
- try {
- security.checkPermission(perm);
- } catch (SecurityException se) {
- // fallback to checkRead/checkConnect for pre 1.2
- // security managers
- if ((perm instanceof java.io.FilePermission) &&
- perm.getActions().indexOf("read") != -1) {
- security.checkRead(perm.getName());
- } else if ((perm instanceof
- java.net.SocketPermission) &&
- perm.getActions().indexOf("connect") != -1) {
- URL locUrl = url;
- if (urlConnection instanceof JarURLConnection) {
- locUrl = ((JarURLConnection)urlConnection).getJarFileURL();
- }
- security.checkConnect(locUrl.getHost(),
- locUrl.getPort());
- } else {
- throw se;
- }
- }
- }
- }
- }
-
- /**
- * Inner class used to represent a loader of resources and classes
- * from a base URL.
- */
- private static class Loader implements Closeable {
- private final URL base;
- private JarFile jarfile; // if this points to a jar file
-
- /*
- * Creates a new Loader for the specified URL.
- */
- Loader(URL url) {
- base = url;
- }
-
- /*
- * Returns the base URL for this Loader.
- */
- URL getBaseURL() {
- return base;
- }
-
- URL findResource(final String name, boolean check) {
- URL url;
- try {
- url = new URL(base, ParseUtil.encodePath(name, false));
- } catch (MalformedURLException e) {
- throw new IllegalArgumentException("name");
- }
-
- try {
- if (check) {
- URLClassPath.check(url);
- }
-
- /*
- * For a HTTP connection we use the HEAD method to
- * check if the resource exists.
- */
- URLConnection uc = url.openConnection();
- if (uc instanceof HttpURLConnection) {
- HttpURLConnection hconn = (HttpURLConnection)uc;
- hconn.setRequestMethod("HEAD");
- if (hconn.getResponseCode() >= HttpURLConnection.HTTP_BAD_REQUEST) {
- return null;
- }
- } else {
- // our best guess for the other cases
- uc.setUseCaches(false);
- InputStream is = uc.getInputStream();
- is.close();
- }
- return url;
- } catch (Exception e) {
- return null;
- }
- }
-
- Resource getResource(final String name, boolean check) {
- final URL url;
- try {
- url = new URL(base, ParseUtil.encodePath(name, false));
- } catch (MalformedURLException e) {
- throw new IllegalArgumentException("name");
- }
- final URLConnection uc;
- try {
- if (check) {
- URLClassPath.check(url);
- }
- uc = url.openConnection();
- InputStream in = uc.getInputStream();
- if (uc instanceof JarURLConnection) {
- /* Need to remember the jar file so it can be closed
- * in a hurry.
- */
- JarURLConnection juc = (JarURLConnection)uc;
- jarfile = JarLoader.checkJar(juc.getJarFile());
- }
- } catch (Exception e) {
- return null;
- }
- return new Resource() {
- public String getName() { return name; }
- public URL getURL() { return url; }
- public URL getCodeSourceURL() { return base; }
- public InputStream getInputStream() throws IOException {
- return uc.getInputStream();
- }
- public int getContentLength() throws IOException {
- return uc.getContentLength();
- }
- };
- }
-
- /*
- * Returns the Resource for the specified name, or null if not
- * found or the caller does not have the permission to get the
- * resource.
- */
- Resource getResource(final String name) {
- return getResource(name, true);
- }
-
- /*
- * close this loader and release all resources
- * method overridden in sub-classes
- */
- public void close () throws IOException {
- if (jarfile != null) {
- jarfile.close();
- }
- }
-
- /*
- * Returns the local class path for this loader, or null if none.
- */
- URL[] getClassPath() throws IOException {
- return null;
- }
- }
-
- /*
- * Inner class used to represent a Loader of resources from a JAR URL.
- */
- static class JarLoader extends Loader {
- private JarFile jar;
- private URL csu;
- private JarIndex index;
- private URLStreamHandler handler;
- private HashMap<String, Loader> lmap;
- private boolean closed = false;
- private static final JavaUtilZipFileAccess zipAccess =
- SharedSecrets.getJavaUtilZipFileAccess();
-
- /*
- * Creates a new JarLoader for the specified URL referring to
- * a JAR file.
- */
- JarLoader(URL url, URLStreamHandler jarHandler,
- HashMap<String, Loader> loaderMap)
- throws IOException
- {
- super(new URL("jar", "", -1, url + "!/", jarHandler));
- csu = url;
- handler = jarHandler;
- lmap = loaderMap;
-
- ensureOpen();
- }
-
- @Override
- public void close () throws IOException {
- // closing is synchronized at higher level
- if (!closed) {
- closed = true;
- // in case not already open.
- ensureOpen();
- jar.close();
- }
- }
-
- JarFile getJarFile () {
- return jar;
- }
-
- private boolean isOptimizable(URL url) {
- return "file".equals(url.getProtocol());
- }
-
- private void ensureOpen() throws IOException {
- if (jar == null) {
- try {
- java.security.AccessController.doPrivileged(
- new java.security.PrivilegedExceptionAction<>() {
- public Void run() throws IOException {
- if (DEBUG) {
- System.err.println("Opening " + csu);
- Thread.dumpStack();
- }
-
- jar = getJarFile(csu);
- index = JarIndex.getJarIndex(jar);
- if (index != null) {
- String[] jarfiles = index.getJarFiles();
- // Add all the dependent URLs to the lmap so that loaders
- // will not be created for them by URLClassPath.getLoader(int)
- // if the same URL occurs later on the main class path. We set
- // Loader to null here to avoid creating a Loader for each
- // URL until we actually need to try to load something from them.
- for(int i = 0; i < jarfiles.length; i++) {
- try {
- URL jarURL = new URL(csu, jarfiles[i]);
- // If a non-null loader already exists, leave it alone.
- String urlNoFragString = URLUtil.urlNoFragString(jarURL);
- if (!lmap.containsKey(urlNoFragString)) {
- lmap.put(urlNoFragString, null);
- }
- } catch (MalformedURLException e) {
- continue;
- }
- }
- }
- return null;
- }
- }
- );
- } catch (java.security.PrivilegedActionException pae) {
- throw (IOException)pae.getException();
- }
- }
- }
-
- /* Throws if the given jar file is does not start with the correct LOC */
- static JarFile checkJar(JarFile jar) throws IOException {
- if (System.getSecurityManager() != null && !DISABLE_JAR_CHECKING
- && !zipAccess.startsWithLocHeader(jar)) {
- IOException x = new IOException("Invalid Jar file");
- try {
- jar.close();
- } catch (IOException ex) {
- x.addSuppressed(ex);
- }
- throw x;
- }
-
- return jar;
- }
-
- private JarFile getJarFile(URL url) throws IOException {
- // Optimize case where url refers to a local jar file
- if (isOptimizable(url)) {
- FileURLMapper p = new FileURLMapper (url);
- if (!p.exists()) {
- throw new FileNotFoundException(p.getPath());
- }
- return checkJar(new JarFile(new File(p.getPath()), true, ZipFile.OPEN_READ,
- JarFile.Release.RUNTIME));
- }
- URLConnection uc = (new URL(getBaseURL(), "#runtime")).openConnection();
- uc.setRequestProperty(USER_AGENT_JAVA_VERSION, JAVA_VERSION);
- JarFile jarFile = ((JarURLConnection)uc).getJarFile();
- return checkJar(jarFile);
- }
-
- /*
- * Returns the index of this JarLoader if it exists.
- */
- JarIndex getIndex() {
- try {
- ensureOpen();
- } catch (IOException e) {
- throw new InternalError(e);
- }
- return index;
- }
-
- /*
- * Creates the resource and if the check flag is set to true, checks if
- * is its okay to return the resource.
- */
- Resource checkResource(final String name, boolean check,
- final JarEntry entry) {
-
- final URL url;
- try {
- if (jar.isMultiRelease()) {
- // add #runtime fragment to tell JarURLConnection to use
- // runtime versioning if the underlying jar file is multi-release
- url = new URL(getBaseURL(), ParseUtil.encodePath(name, false) + "#runtime");
- } else {
- url = new URL(getBaseURL(), ParseUtil.encodePath(name, false));
- }
- if (check) {
- URLClassPath.check(url);
- }
- } catch (MalformedURLException e) {
- return null;
- // throw new IllegalArgumentException("name");
- } catch (IOException e) {
- return null;
- } catch (AccessControlException e) {
- return null;
- }
-
- return new Resource() {
- public String getName() { return name; }
- public URL getURL() { return url; }
- public URL getCodeSourceURL() { return csu; }
- public InputStream getInputStream() throws IOException
- { return jar.getInputStream(entry); }
- public int getContentLength()
- { return (int)entry.getSize(); }
- public Manifest getManifest() throws IOException
- { return jar.getManifest(); };
- public Certificate[] getCertificates()
- { return entry.getCertificates(); };
- public CodeSigner[] getCodeSigners()
- { return entry.getCodeSigners(); };
- };
- }
-
-
- /*
- * Returns true iff atleast one resource in the jar file has the same
- * package name as that of the specified resource name.
- */
- boolean validIndex(final String name) {
- String packageName = name;
- int pos;
- if((pos = name.lastIndexOf('/')) != -1) {
- packageName = name.substring(0, pos);
- }
-
- String entryName;
- ZipEntry entry;
- Enumeration<JarEntry> enum_ = jar.entries();
- while (enum_.hasMoreElements()) {
- entry = enum_.nextElement();
- entryName = entry.getName();
- if((pos = entryName.lastIndexOf('/')) != -1)
- entryName = entryName.substring(0, pos);
- if (entryName.equals(packageName)) {
- return true;
- }
- }
- return false;
- }
-
- /*
- * Returns the URL for a resource with the specified name
- */
- URL findResource(final String name, boolean check) {
- Resource rsc = getResource(name, check);
- if (rsc != null) {
- return rsc.getURL();
- }
- return null;
- }
-
- /*
- * Returns the JAR Resource for the specified name.
- */
- Resource getResource(final String name, boolean check) {
- try {
- ensureOpen();
- } catch (IOException e) {
- throw new InternalError(e);
- }
- final JarEntry entry = jar.getJarEntry(name);
- if (entry != null)
- return checkResource(name, check, entry);
-
- if (index == null)
- return null;
-
- HashSet<String> visited = new HashSet<>();
- return getResource(name, check, visited);
- }
-
- /*
- * Version of getResource() that tracks the jar files that have been
- * visited by linking through the index files. This helper method uses
- * a HashSet to store the URLs of jar files that have been searched and
- * uses it to avoid going into an infinite loop, looking for a
- * non-existent resource
- */
- Resource getResource(final String name, boolean check,
- Set<String> visited) {
-
- Resource res;
- String[] jarFiles;
- int count = 0;
- LinkedList<String> jarFilesList = null;
-
- /* If there no jar files in the index that can potential contain
- * this resource then return immediately.
- */
- if((jarFilesList = index.get(name)) == null)
- return null;
-
- do {
- int size = jarFilesList.size();
- jarFiles = jarFilesList.toArray(new String[size]);
- /* loop through the mapped jar file list */
- while(count < size) {
- String jarName = jarFiles[count++];
- JarLoader newLoader;
- final URL url;
-
- try{
- url = new URL(csu, jarName);
- String urlNoFragString = URLUtil.urlNoFragString(url);
- if ((newLoader = (JarLoader)lmap.get(urlNoFragString)) == null) {
- /* no loader has been set up for this jar file
- * before
- */
- newLoader = AccessController.doPrivileged(
- new PrivilegedExceptionAction<>() {
- public JarLoader run() throws IOException {
- return new JarLoader(url, handler,
- lmap);
- }
- });
-
- /* this newly opened jar file has its own index,
- * merge it into the parent's index, taking into
- * account the relative path.
- */
- JarIndex newIndex = newLoader.getIndex();
- if(newIndex != null) {
- int pos = jarName.lastIndexOf('/');
- newIndex.merge(this.index, (pos == -1 ?
- null : jarName.substring(0, pos + 1)));
- }
-
- /* put it in the global hashtable */
- lmap.put(urlNoFragString, newLoader);
- }
- } catch (java.security.PrivilegedActionException pae) {
- continue;
- } catch (MalformedURLException e) {
- continue;
- }
-
-
- /* Note that the addition of the url to the list of visited
- * jars incorporates a check for presence in the hashmap
- */
- boolean visitedURL = !visited.add(URLUtil.urlNoFragString(url));
- if (!visitedURL) {
- try {
- newLoader.ensureOpen();
- } catch (IOException e) {
- throw new InternalError(e);
- }
- final JarEntry entry = newLoader.jar.getJarEntry(name);
- if (entry != null) {
- return newLoader.checkResource(name, check, entry);
- }
-
- /* Verify that at least one other resource with the
- * same package name as the lookedup resource is
- * present in the new jar
- */
- if (!newLoader.validIndex(name)) {
- /* the mapping is wrong */
- throw new InvalidJarIndexException("Invalid index");
- }
- }
-
- /* If newLoader is the current loader or if it is a
- * loader that has already been searched or if the new
- * loader does not have an index then skip it
- * and move on to the next loader.
- */
- if (visitedURL || newLoader == this ||
- newLoader.getIndex() == null) {
- continue;
- }
-
- /* Process the index of the new loader
- */
- if((res = newLoader.getResource(name, check, visited))
- != null) {
- return res;
- }
- }
- // Get the list of jar files again as the list could have grown
- // due to merging of index files.
- jarFilesList = index.get(name);
-
- // If the count is unchanged, we are done.
- } while(count < jarFilesList.size());
- return null;
- }
-
-
- /*
- * Returns the JAR file local class path, or null if none.
- */
- URL[] getClassPath() throws IOException {
- if (index != null) {
- return null;
- }
-
- ensureOpen();
-
- if (SharedSecrets.javaUtilJarAccess().jarFileHasClassPathAttribute(jar)) { // Only get manifest when necessary
- Manifest man = jar.getManifest();
- if (man != null) {
- Attributes attr = man.getMainAttributes();
- if (attr != null) {
- String value = attr.getValue(Name.CLASS_PATH);
- if (value != null) {
- return parseClassPath(csu, value);
- }
- }
- }
- }
- return null;
- }
-
- /*
- * Parses value of the Class-Path manifest attribute and returns
- * an array of URLs relative to the specified base URL.
- */
- private URL[] parseClassPath(URL base, String value)
- throws MalformedURLException
- {
- StringTokenizer st = new StringTokenizer(value);
- URL[] urls = new URL[st.countTokens()];
- int i = 0;
- while (st.hasMoreTokens()) {
- String path = st.nextToken();
- urls[i] = new URL(base, path);
- i++;
- }
- return urls;
- }
- }
-
- /*
- * Inner class used to represent a loader of classes and resources
- * from a file URL that refers to a directory.
- */
- private static class FileLoader extends Loader {
- /* Canonicalized File */
- private File dir;
-
- FileLoader(URL url) throws IOException {
- super(url);
- if (!"file".equals(url.getProtocol())) {
- throw new IllegalArgumentException("url");
- }
- String path = url.getFile().replace('/', File.separatorChar);
- path = ParseUtil.decode(path);
- dir = (new File(path)).getCanonicalFile();
- }
-
- /*
- * Returns the URL for a resource with the specified name
- */
- URL findResource(final String name, boolean check) {
- Resource rsc = getResource(name, check);
- if (rsc != null) {
- return rsc.getURL();
- }
- return null;
- }
-
- Resource getResource(final String name, boolean check) {
- final URL url;
- try {
- URL normalizedBase = new URL(getBaseURL(), ".");
- url = new URL(getBaseURL(), ParseUtil.encodePath(name, false));
-
- if (url.getFile().startsWith(normalizedBase.getFile()) == false) {
- // requested resource had ../..'s in path
- return null;
- }
-
- if (check)
- URLClassPath.check(url);
-
- final File file;
- if (name.indexOf("..") != -1) {
- file = (new File(dir, name.replace('/', File.separatorChar)))
- .getCanonicalFile();
- if ( !((file.getPath()).startsWith(dir.getPath())) ) {
- /* outside of base dir */
- return null;
- }
- } else {
- file = new File(dir, name.replace('/', File.separatorChar));
- }
-
- if (file.exists()) {
- return new Resource() {
- public String getName() { return name; };
- public URL getURL() { return url; };
- public URL getCodeSourceURL() { return getBaseURL(); };
- public InputStream getInputStream() throws IOException
- { return new FileInputStream(file); };
- public int getContentLength() throws IOException
- { return (int)file.length(); };
- };
- }
- } catch (Exception e) {
- return null;
- }
- return null;
- }
- }
-}