--- a/jdk/src/java.base/share/classes/sun/misc/ExtensionDependency.java Fri Jun 12 19:23:53 2015 -0500
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,554 +0,0 @@
-/*
- * Copyright (c) 1999, 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.File;
-import java.io.FilenameFilter;
-import java.io.IOException;
-import java.io.FileNotFoundException;
-import java.util.StringTokenizer;
-import java.util.Vector;
-import java.util.Enumeration;
-import java.util.jar.JarFile;
-import java.util.jar.Manifest;
-import java.util.jar.Attributes;
-import java.util.jar.Attributes.Name;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.security.PrivilegedExceptionAction;
-import java.security.PrivilegedActionException;
-import java.net.URL;
-import java.net.MalformedURLException;
-import sun.net.www.ParseUtil;
-
-/**
- * This class checks dependent extensions a particular jar file may have
- * declared through its manifest attributes.
- * <p>
- * Jar file declared dependent extensions through the extension-list
- * attribute. The extension-list contains a list of keys used to
- * fetch the other attributes describing the required extension.
- * If key is the extension key declared in the extension-list
- * attribute, the following describing attribute can be found in
- * the manifest:
- * <ul>
- * <li>key-Extension-Name: (Specification package name)</li>
- * <li>key-Specification-Version: (Specification-Version)</li>
- * <li>key-Implementation-Version: (Implementation-Version)</li>
- * <li>key-Implementation-Vendor-Id: (Imlementation-Vendor-Id)</li>
- * <li>key-Implementation-Version: (Implementation version)</li>
- * <li>key-Implementation-URL: (URL to download the requested extension)</li>
- * </ul>
- * <p>
- * This class also maintain versioning consistency of installed
- * extensions dependencies declared in jar file manifest.
- *
- * @deprecated this class will be removed in a future release.
- * @author Jerome Dochez
- */
-@Deprecated
-public class ExtensionDependency {
-
- /* Callbak interfaces to delegate installation of missing extensions */
- private static Vector<ExtensionInstallationProvider> providers;
-
- /**
- * Register an ExtensionInstallationProvider. The provider is responsible
- * for handling the installation (upgrade) of any missing extensions.
- *
- * @param eip ExtensionInstallationProvider implementation
- */
- public synchronized static void addExtensionInstallationProvider
- (ExtensionInstallationProvider eip)
- {
- if (providers == null) {
- providers = new Vector<>();
- }
- providers.add(eip);
- }
-
- /**
- * Unregister a previously installed installation provider
- */
- public synchronized static void removeExtensionInstallationProvider
- (ExtensionInstallationProvider eip)
- {
- providers.remove(eip);
- }
-
- /**
- * Checks the dependencies of the jar file on installed extension.
- *
- * @param jar containing the attributes declaring the dependencies
- */
- public static boolean checkExtensionsDependencies(JarFile jar)
- {
- if (providers == null) {
- // no need to bother, nobody is registered to install missing
- // extensions
- return true;
- }
-
- try {
- ExtensionDependency extDep = new ExtensionDependency();
- return extDep.checkExtensions(jar);
- } catch (ExtensionInstallationException e) {
- debug(e.getMessage());
- }
- return false;
- }
-
- /*
- * Check for all declared required extensions in the jar file
- * manifest.
- */
- protected boolean checkExtensions(JarFile jar)
- throws ExtensionInstallationException
- {
- Manifest man;
- try {
- man = jar.getManifest();
- } catch (IOException e) {
- return false;
- }
-
- if (man == null) {
- // The applet does not define a manifest file, so
- // we just assume all dependencies are satisfied.
- return true;
- }
-
- boolean result = true;
- Attributes attr = man.getMainAttributes();
- if (attr != null) {
- // Let's get the list of declared dependencies
- String value = attr.getValue(Name.EXTENSION_LIST);
- if (value != null) {
- StringTokenizer st = new StringTokenizer(value);
- // Iterate over all declared dependencies
- while (st.hasMoreTokens()) {
- String extensionName = st.nextToken();
- debug("The file " + jar.getName() +
- " appears to depend on " + extensionName);
- // Sanity Check
- String extName = extensionName + "-" +
- Name.EXTENSION_NAME.toString();
- if (attr.getValue(extName) == null) {
- debug("The jar file " + jar.getName() +
- " appers to depend on "
- + extensionName + " but does not define the " +
- extName + " attribute in its manifest ");
-
- } else {
- if (!checkExtension(extensionName, attr)) {
- debug("Failed installing " + extensionName);
- result = false;
- }
- }
- }
- } else {
- debug("No dependencies for " + jar.getName());
- }
- }
- return result;
- }
-
-
- /*
- * Check that a particular dependency on an extension is satisfied.
- *
- * @param extensionName is the key used for the attributes in the manifest
- * @param attr is the attributes of the manifest file
- *
- * @return true if the dependency is satisfied by the installed extensions
- */
- protected synchronized boolean checkExtension(final String extensionName,
- final Attributes attr)
- throws ExtensionInstallationException
- {
- debug("Checking extension " + extensionName);
- if (checkExtensionAgainstInstalled(extensionName, attr))
- return true;
-
- debug("Extension not currently installed ");
- ExtensionInfo reqInfo = new ExtensionInfo(extensionName, attr);
- return installExtension(reqInfo, null);
- }
-
- /*
- * Check if a particular extension is part of the currently installed
- * extensions.
- *
- * @param extensionName is the key for the attributes in the manifest
- * @param attr is the attributes of the manifest
- *
- * @return true if the requested extension is already installed
- */
- boolean checkExtensionAgainstInstalled(String extensionName,
- Attributes attr)
- throws ExtensionInstallationException
- {
- File fExtension = checkExtensionExists(extensionName);
-
- if (fExtension != null) {
- // Extension already installed, just check against this one
- try {
- if (checkExtensionAgainst(extensionName, attr, fExtension))
- return true;
- } catch (FileNotFoundException e) {
- debugException(e);
- } catch (IOException e) {
- debugException(e);
- }
- return false;
-
- } else {
- // Not sure if extension is already installed, so check all the
- // installed extension jar files to see if we get a match
-
- File[] installedExts;
-
- try {
- // Get the list of installed extension jar files so we can
- // compare the installed versus the requested extension
- installedExts = getInstalledExtensions();
- } catch(IOException e) {
- debugException(e);
- return false;
- }
-
- for (int i=0;i<installedExts.length;i++) {
- try {
- if (checkExtensionAgainst(extensionName, attr, installedExts[i]))
- return true;
- } catch (FileNotFoundException e) {
- debugException(e);
- } catch (IOException e) {
- debugException(e);
- // let's continue with the next installed extension
- }
- }
- }
- return false;
- }
-
- /*
- * Check if the requested extension described by the attributes
- * in the manifest under the key extensionName is compatible with
- * the jar file.
- *
- * @param extensionName key in the attribute list
- * @param attr manifest file attributes
- * @param file installed extension jar file to compare the requested
- * extension against.
- */
- protected boolean checkExtensionAgainst(String extensionName,
- Attributes attr,
- final File file)
- throws IOException,
- FileNotFoundException,
- ExtensionInstallationException
- {
-
- debug("Checking extension " + extensionName +
- " against " + file.getName());
-
- // Load the jar file ...
- Manifest man;
- try {
- man = AccessController.doPrivileged(
- new PrivilegedExceptionAction<Manifest>() {
- public Manifest run()
- throws IOException, FileNotFoundException {
- if (!file.exists())
- throw new FileNotFoundException(file.getName());
- JarFile jarFile = new JarFile(file);
- return jarFile.getManifest();
- }
- });
- } catch(PrivilegedActionException e) {
- if (e.getException() instanceof FileNotFoundException)
- throw (FileNotFoundException) e.getException();
- throw (IOException) e.getException();
- }
-
- // Construct the extension information object
- ExtensionInfo reqInfo = new ExtensionInfo(extensionName, attr);
- debug("Requested Extension : " + reqInfo);
-
- int isCompatible = ExtensionInfo.INCOMPATIBLE;
- ExtensionInfo instInfo = null;
-
- if (man != null) {
- Attributes instAttr = man.getMainAttributes();
- if (instAttr != null) {
- instInfo = new ExtensionInfo(null, instAttr);
- debug("Extension Installed " + instInfo);
- isCompatible = instInfo.isCompatibleWith(reqInfo);
- switch(isCompatible) {
- case ExtensionInfo.COMPATIBLE:
- debug("Extensions are compatible");
- return true;
-
- case ExtensionInfo.INCOMPATIBLE:
- debug("Extensions are incompatible");
- return false;
-
- default:
- // everything else
- debug("Extensions require an upgrade or vendor switch");
- return installExtension(reqInfo, instInfo);
-
- }
- }
- }
- return false;
- }
-
- /*
- * An required extension is missing, if an ExtensionInstallationProvider is
- * registered, delegate the installation of that particular extension to it.
- *
- * @param reqInfo Missing extension information
- * @param instInfo Older installed version information
- *
- * @return true if the installation is successful
- */
- protected boolean installExtension(ExtensionInfo reqInfo,
- ExtensionInfo instInfo)
- throws ExtensionInstallationException
- {
- Vector<ExtensionInstallationProvider> currentProviders;
- synchronized(providers) {
- @SuppressWarnings("unchecked")
- Vector<ExtensionInstallationProvider> tmp =
- (Vector<ExtensionInstallationProvider>) providers.clone();
- currentProviders = tmp;
- }
- for (Enumeration<ExtensionInstallationProvider> e = currentProviders.elements();
- e.hasMoreElements();) {
- ExtensionInstallationProvider eip = e.nextElement();
-
- if (eip!=null) {
- // delegate the installation to the provider
- if (eip.installExtension(reqInfo, instInfo)) {
- debug(reqInfo.name + " installation successful");
- Launcher.ExtClassLoader cl = (Launcher.ExtClassLoader)
- Launcher.getLauncher().getClassLoader().getParent();
- addNewExtensionsToClassLoader(cl);
- return true;
- }
- }
- }
- // We have tried all of our providers, noone could install this
- // extension, we just return failure at this point
- debug(reqInfo.name + " installation failed");
- return false;
- }
-
- /**
- * Checks if the extension, that is specified in the extension-list in
- * the applet jar manifest, is already installed (i.e. exists in the
- * extension directory).
- *
- * @param extensionName extension name in the extension-list
- *
- * @return the extension if it exists in the extension directory
- */
- private File checkExtensionExists(String extensionName) {
- // Function added to fix bug 4504166
- final String extName = extensionName;
- final String[] fileExt = {".jar", ".zip"};
-
- return AccessController.doPrivileged(
- new PrivilegedAction<File>() {
- public File run() {
- try {
- File fExtension;
- File[] dirs = getExtDirs();
-
- // Search the extension directories for the extension that is specified
- // in the attribute extension-list in the applet jar manifest
- for (int i=0;i<dirs.length;i++) {
- for (int j=0;j<fileExt.length;j++) {
- if (extName.toLowerCase().endsWith(fileExt[j])) {
- fExtension = new File(dirs[i], extName);
- } else {
- fExtension = new File(dirs[i], extName+fileExt[j]);
- }
- debug("checkExtensionExists:fileName " + fExtension.getName());
- if (fExtension.exists()) {
- return fExtension;
- }
- }
- }
- return null;
-
- } catch(Exception e) {
- debugException(e);
- return null;
- }
- }
- });
- }
-
- /**
- * @return the java.ext.dirs property as a list of directory
- */
- private static File[] getExtDirs() {
- String s = java.security.AccessController.doPrivileged(
- new sun.security.action.GetPropertyAction("java.ext.dirs"));
-
- File[] dirs;
- if (s != null) {
- StringTokenizer st =
- new StringTokenizer(s, File.pathSeparator);
- int count = st.countTokens();
- debug("getExtDirs count " + count);
- dirs = new File[count];
- for (int i = 0; i < count; i++) {
- dirs[i] = new File(st.nextToken());
- debug("getExtDirs dirs["+i+"] "+ dirs[i]);
- }
- } else {
- dirs = new File[0];
- debug("getExtDirs dirs " + dirs);
- }
- debug("getExtDirs dirs.length " + dirs.length);
- return dirs;
- }
-
- /*
- * Scan the directories and return all files installed in those
- *
- * @param dirs list of directories to scan
- *
- * @return the list of files installed in all the directories
- */
- private static File[] getExtFiles(File[] dirs) throws IOException {
- Vector<File> urls = new Vector<File>();
- for (int i = 0; i < dirs.length; i++) {
- String[] files = dirs[i].list(new JarFilter());
- if (files != null) {
- debug("getExtFiles files.length " + files.length);
- for (int j = 0; j < files.length; j++) {
- File f = new File(dirs[i], files[j]);
- urls.add(f);
- debug("getExtFiles f["+j+"] "+ f);
- }
- }
- }
- File[] ua = new File[urls.size()];
- urls.copyInto(ua);
- debug("getExtFiles ua.length " + ua.length);
- return ua;
- }
-
- /*
- * @return the list of installed extensions jar files
- */
- private File[] getInstalledExtensions() throws IOException {
- return AccessController.doPrivileged(
- new PrivilegedAction<File[]>() {
- public File[] run() {
- try {
- return getExtFiles(getExtDirs());
- } catch(IOException e) {
- debug("Cannot get list of installed extensions");
- debugException(e);
- return new File[0];
- }
- }
- });
- }
-
- /*
- * Add the newly installed jar file to the extension class loader.
- *
- * @param cl the current installed extension class loader
- *
- * @return true if successful
- */
- private Boolean addNewExtensionsToClassLoader(Launcher.ExtClassLoader cl) {
- try {
- File[] installedExts = getInstalledExtensions();
- for (int i=0;i<installedExts.length;i++) {
- final File instFile = installedExts[i];
- URL instURL = AccessController.doPrivileged(
- new PrivilegedAction<URL>() {
- public URL run() {
- try {
- return ParseUtil.fileToEncodedURL(instFile);
- } catch (MalformedURLException e) {
- debugException(e);
- return null;
- }
- }
- });
- if (instURL != null) {
- URL[] urls = cl.getURLs();
- boolean found=false;
- for (int j = 0; j<urls.length; j++) {
- debug("URL["+j+"] is " + urls[j] + " looking for "+
- instURL);
- if (urls[j].toString().compareToIgnoreCase(
- instURL.toString())==0) {
- found=true;
- debug("Found !");
- }
- }
- if (!found) {
- debug("Not Found ! adding to the classloader " +
- instURL);
- cl.addExtURL(instURL);
- }
- }
- }
- } catch (MalformedURLException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- // let's continue with the next installed extension
- }
- return Boolean.TRUE;
- }
-
- // True to display all debug and trace messages
- static final boolean DEBUG = false;
-
- private static void debug(String s) {
- if (DEBUG) {
- System.err.println(s);
- }
- }
-
- private void debugException(Throwable e) {
- if (DEBUG) {
- e.printStackTrace();
- }
- }
-
-}