1284 lines
47 KiB
Java
1284 lines
47 KiB
Java
/*
|
|
* Copyright (C) 2014 The Android Open Source Project
|
|
* Copyright (c) 1997, 2016, 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.util.*;
|
|
import java.util.jar.JarFile;
|
|
import sun.misc.InvalidJarIndexException;
|
|
import sun.net.www.ParseUtil;
|
|
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.net.JarURLConnection;
|
|
import java.net.MalformedURLException;
|
|
import java.net.URL;
|
|
import java.net.URLConnection;
|
|
import java.net.HttpURLConnection;
|
|
import java.net.URLStreamHandler;
|
|
import java.net.URLStreamHandlerFactory;
|
|
import java.io.*;
|
|
import java.security.AccessControlContext;
|
|
import java.security.AccessController;
|
|
import java.security.AccessControlException;
|
|
import java.security.CodeSigner;
|
|
import java.security.Permission;
|
|
import java.security.PrivilegedAction;
|
|
import java.security.PrivilegedExceptionAction;
|
|
import java.security.cert.Certificate;
|
|
import jdk.internal.util.jar.JarIndex;
|
|
import sun.misc.FileURLMapper;
|
|
import sun.net.util.URLUtil;
|
|
import sun.security.action.GetPropertyAction;
|
|
|
|
/**
|
|
* 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 {
|
|
final static String USER_AGENT_JAVA_VERSION = "UA-Java-Version";
|
|
final static String JAVA_VERSION;
|
|
private static final boolean DEBUG;
|
|
private static final boolean DEBUG_LOOKUP_CACHE;
|
|
private static final boolean DISABLE_JAR_CHECKING;
|
|
private static final boolean DISABLE_ACC_CHECKING;
|
|
|
|
static {
|
|
JAVA_VERSION = java.security.AccessController.doPrivileged(
|
|
new GetPropertyAction("java.version"));
|
|
DEBUG = (java.security.AccessController.doPrivileged(
|
|
new GetPropertyAction("sun.misc.URLClassPath.debug")) != null);
|
|
DEBUG_LOOKUP_CACHE = (java.security.AccessController.doPrivileged(
|
|
new GetPropertyAction("sun.misc.URLClassPath.debugLookupCache")) != null);
|
|
String p = java.security.AccessController.doPrivileged(
|
|
new GetPropertyAction("sun.misc.URLClassPath.disableJarChecking"));
|
|
DISABLE_JAR_CHECKING = p != null ? p.equals("true") || p.equals("") : false;
|
|
|
|
p = AccessController.doPrivileged(
|
|
new GetPropertyAction("jdk.net.URLClassPath.disableRestrictedPermissions"));
|
|
DISABLE_ACC_CHECKING = p != null ? p.equals("true") || p.equals("") : false;
|
|
}
|
|
|
|
/* The original search path of URLs. */
|
|
private ArrayList<URL> path = new ArrayList<URL>();
|
|
|
|
/* The stack of unopened URLs */
|
|
Stack<URL> urls = new Stack<URL>();
|
|
|
|
/* The resulting search path of Loaders */
|
|
ArrayList<Loader> loaders = new ArrayList<Loader>();
|
|
|
|
/* Map of each URL opened to its corresponding Loader */
|
|
HashMap<String, Loader> lmap = new HashMap<String, Loader>();
|
|
|
|
/* The jar protocol handler to use when creating new URLs */
|
|
private URLStreamHandler jarHandler;
|
|
|
|
/* Whether this URLClassLoader has been closed yet */
|
|
private boolean closed = false;
|
|
|
|
/* The context to be used when loading classes and resources. If non-null
|
|
* this is the context that was captured during the creation of the
|
|
* URLClassLoader. null implies no additional security restrictions. */
|
|
private final AccessControlContext acc;
|
|
|
|
/**
|
|
* 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
|
|
* @param acc the context to be used when loading classes and resources, may
|
|
* be null
|
|
*/
|
|
public URLClassPath(URL[] urls,
|
|
URLStreamHandlerFactory factory,
|
|
AccessControlContext acc) {
|
|
for (int i = 0; i < urls.length; i++) {
|
|
path.add(urls[i]);
|
|
}
|
|
push(urls);
|
|
if (factory != null) {
|
|
jarHandler = factory.createURLStreamHandler("jar");
|
|
}
|
|
if (DISABLE_ACC_CHECKING)
|
|
this.acc = null;
|
|
else
|
|
this.acc = acc;
|
|
}
|
|
|
|
/**
|
|
* Constructs a URLClassPath with no additional security restrictions.
|
|
* Used by code that implements the class path.
|
|
*/
|
|
public URLClassPath(URL[] urls) {
|
|
this(urls, null, null);
|
|
}
|
|
|
|
public URLClassPath(URL[] urls, AccessControlContext acc) {
|
|
this(urls, null, acc);
|
|
}
|
|
|
|
public synchronized List<IOException> closeLoaders() {
|
|
if (closed) {
|
|
return Collections.emptyList();
|
|
}
|
|
List<IOException> result = new LinkedList<IOException>();
|
|
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);
|
|
|
|
if (lookupCacheURLs != null) {
|
|
// The lookup cache is no longer valid, since getLookupCache()
|
|
// does not consider the newly added url.
|
|
disableAllLookupCaches();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
int[] cache = getLookupCache(name);
|
|
for (int i = 0; (loader = getNextLoader(cache, 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;
|
|
int[] cache = getLookupCache(name);
|
|
for (int i = 0; (loader = getNextLoader(cache, 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<URL>() {
|
|
private int index = 0;
|
|
private int[] cache = getLookupCache(name);
|
|
private URL url = null;
|
|
|
|
private boolean next() {
|
|
if (url != null) {
|
|
return true;
|
|
} else {
|
|
Loader loader;
|
|
while ((loader = getNextLoader(cache, 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<Resource>() {
|
|
private int index = 0;
|
|
private int[] cache = getLookupCache(name);
|
|
private Resource res = null;
|
|
|
|
private boolean next() {
|
|
if (res != null) {
|
|
return true;
|
|
} else {
|
|
Loader loader;
|
|
while ((loader = getNextLoader(cache, 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);
|
|
}
|
|
|
|
private static volatile boolean lookupCacheEnabled
|
|
// Android-changed: No lookup cache support.
|
|
// = "true".equals(VM.getSavedProperty("sun.cds.enableSharedLookupCache"));
|
|
= false;
|
|
private URL[] lookupCacheURLs;
|
|
private ClassLoader lookupCacheLoader;
|
|
|
|
synchronized void initLookupCache(ClassLoader loader) {
|
|
if ((lookupCacheURLs = getLookupCacheURLs(loader)) != null) {
|
|
lookupCacheLoader = loader;
|
|
} else {
|
|
// This JVM instance does not support lookup cache.
|
|
disableAllLookupCaches();
|
|
}
|
|
}
|
|
|
|
static void disableAllLookupCaches() {
|
|
lookupCacheEnabled = false;
|
|
}
|
|
|
|
// BEGIN Android-changed: No lookup cache support.
|
|
/*
|
|
private static native URL[] getLookupCacheURLs(ClassLoader loader);
|
|
private static native int[] getLookupCacheForClassLoader(ClassLoader loader,
|
|
String name);
|
|
private static native boolean knownToNotExist0(ClassLoader loader,
|
|
String className);
|
|
*/
|
|
|
|
private URL[] getLookupCacheURLs(ClassLoader loader) {
|
|
return null;
|
|
}
|
|
private static int[] getLookupCacheForClassLoader(ClassLoader loader,
|
|
String name) {
|
|
return null;
|
|
}
|
|
private static boolean knownToNotExist0(ClassLoader loader,
|
|
String className) {
|
|
return false;
|
|
}
|
|
// END Android-changed: No lookup cache support.
|
|
|
|
|
|
synchronized boolean knownToNotExist(String className) {
|
|
if (lookupCacheURLs != null && lookupCacheEnabled) {
|
|
return knownToNotExist0(lookupCacheLoader, className);
|
|
}
|
|
|
|
// Don't know if this class exists or not -- need to do a full search.
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of the index to lookupCacheURLs that may
|
|
* contain the specified resource. The values in the returned
|
|
* array are in strictly ascending order and must be a valid index
|
|
* to lookupCacheURLs array.
|
|
*
|
|
* This method returns an empty array if the specified resource
|
|
* cannot be found in this URLClassPath. If there is no lookup
|
|
* cache or it's disabled, this method returns null and the lookup
|
|
* should search the entire classpath.
|
|
*
|
|
* Example: if lookupCacheURLs contains {a.jar, b.jar, c.jar, d.jar}
|
|
* and package "foo" only exists in a.jar and c.jar,
|
|
* getLookupCache("foo/Bar.class") will return {0, 2}
|
|
*
|
|
* @param name the resource name
|
|
* @return an array of the index to lookupCacheURLs that may contain the
|
|
* specified resource; or null if no lookup cache is used.
|
|
*/
|
|
private synchronized int[] getLookupCache(String name) {
|
|
if (lookupCacheURLs == null || !lookupCacheEnabled) {
|
|
return null;
|
|
}
|
|
|
|
int[] cache = getLookupCacheForClassLoader(lookupCacheLoader, name);
|
|
if (cache != null && cache.length > 0) {
|
|
int maxindex = cache[cache.length - 1]; // cache[] is strictly ascending.
|
|
if (!ensureLoaderOpened(maxindex)) {
|
|
if (DEBUG_LOOKUP_CACHE) {
|
|
System.out.println("Expanded loaders FAILED " +
|
|
loaders.size() + " for maxindex=" + maxindex);
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return cache;
|
|
}
|
|
|
|
private boolean ensureLoaderOpened(int index) {
|
|
if (loaders.size() <= index) {
|
|
// Open all Loaders up to, and including, index
|
|
if (getLoader(index) == null) {
|
|
return false;
|
|
}
|
|
if (!lookupCacheEnabled) {
|
|
// cache was invalidated as the result of the above call.
|
|
return false;
|
|
}
|
|
if (DEBUG_LOOKUP_CACHE) {
|
|
System.out.println("Expanded loaders " + loaders.size() +
|
|
" to index=" + index);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* The CLASS-PATH attribute was expanded by the VM when building
|
|
* the resource lookup cache in the same order as the getLoader
|
|
* method does. This method validates if the URL from the lookup
|
|
* cache matches the URL of the Loader at the given index;
|
|
* otherwise, this method disables the lookup cache.
|
|
*/
|
|
private synchronized void validateLookupCache(int index,
|
|
String urlNoFragString) {
|
|
if (lookupCacheURLs != null && lookupCacheEnabled) {
|
|
if (index < lookupCacheURLs.length &&
|
|
urlNoFragString.equals(
|
|
URLUtil.urlNoFragString(lookupCacheURLs[index]))) {
|
|
return;
|
|
}
|
|
if (DEBUG || DEBUG_LOOKUP_CACHE) {
|
|
System.out.println("WARNING: resource lookup cache invalidated "
|
|
+ "for lookupCacheLoader at " + index);
|
|
}
|
|
disableAllLookupCaches();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the next Loader that may contain the resource to
|
|
* lookup. If the given cache is null, return loaders.get(index)
|
|
* that may be lazily created; otherwise, cache[index] is the next
|
|
* Loader that may contain the resource to lookup and so returns
|
|
* loaders.get(cache[index]).
|
|
*
|
|
* If cache is non-null, loaders.get(cache[index]) must be present.
|
|
*
|
|
* @param cache lookup cache. If null, search the entire class path
|
|
* @param index index to the given cache array; or to the loaders list.
|
|
*/
|
|
private synchronized Loader getNextLoader(int[] cache, int index) {
|
|
if (closed) {
|
|
return null;
|
|
}
|
|
if (cache != null) {
|
|
if (index < cache.length) {
|
|
Loader loader = loaders.get(cache[index]);
|
|
if (DEBUG_LOOKUP_CACHE) {
|
|
System.out.println("HASCACHE: Loading from : " + cache[index]
|
|
+ " = " + loader.getBaseURL());
|
|
}
|
|
return loader;
|
|
} else {
|
|
return null; // finished iterating over cache[]
|
|
}
|
|
} else {
|
|
return getLoader(index);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
} catch (SecurityException se) {
|
|
// Always silently ignore. The context, if there is one, that
|
|
// this URLClassPath was given during construction will never
|
|
// have permission to access the URL.
|
|
if (DEBUG) {
|
|
System.err.println("Failed to access " + url + ", " + se );
|
|
}
|
|
continue;
|
|
}
|
|
// Finally, add the Loader to the search path.
|
|
validateLookupCache(loaders.size(), urlNoFragString);
|
|
loaders.add(loader);
|
|
lmap.put(urlNoFragString, loader);
|
|
}
|
|
if (DEBUG_LOOKUP_CACHE) {
|
|
System.out.println("NOCACHE: Loading from : " + index );
|
|
}
|
|
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<Loader>() {
|
|
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, acc);
|
|
}
|
|
}
|
|
}, acc);
|
|
} 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 URL checkURL(URL url) {
|
|
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.
|
|
*/
|
|
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 final URL csu;
|
|
private JarIndex index;
|
|
private URLStreamHandler handler;
|
|
private final HashMap<String, Loader> lmap;
|
|
private final AccessControlContext acc;
|
|
private boolean closed = false;
|
|
// Android-changed: Not needed, called directly.
|
|
// private static final sun.misc.JavaUtilZipFileAccess zipAccess =
|
|
// sun.misc.SharedSecrets.getJavaUtilZipFileAccess();
|
|
|
|
/*
|
|
* Creates a new JarLoader for the specified URL referring to
|
|
* a JAR file.
|
|
*/
|
|
JarLoader(URL url, URLStreamHandler jarHandler,
|
|
HashMap<String, Loader> loaderMap,
|
|
AccessControlContext acc)
|
|
throws IOException
|
|
{
|
|
super(new URL("jar", "", -1, url + "!/", jarHandler));
|
|
csu = url;
|
|
handler = jarHandler;
|
|
lmap = loaderMap;
|
|
this.acc = acc;
|
|
|
|
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<Void>() {
|
|
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;
|
|
}
|
|
}, acc);
|
|
} 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
|
|
&& !jar.startsWithLocHeader()) {
|
|
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(p.getPath()));
|
|
}
|
|
URLConnection uc = getBaseURL().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 {
|
|
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<String>();
|
|
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<JarLoader>() {
|
|
public JarLoader run() throws IOException {
|
|
return new JarLoader(url, handler,
|
|
lmap, acc);
|
|
}
|
|
}, acc);
|
|
|
|
/* 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();
|
|
parseExtensionsDependencies();
|
|
if (jar.hasClassPathAttribute()) { // 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;
|
|
}
|
|
|
|
/*
|
|
* parse the standard extension dependencies
|
|
*/
|
|
private void parseExtensionsDependencies() throws IOException {
|
|
// Android-changed: checkExtensionsDependencies(jar) is not supported on Android.
|
|
//ExtensionDependency.checkExtensionsDependencies(jar);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
}
|
|
}
|