/* * Copyright (c) 2001, 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.net.www.protocol.jar; import java.io.*; import java.net.*; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.StandardCopyOption; import java.util.*; import java.util.jar.*; import java.util.zip.ZipFile; import java.util.zip.ZipEntry; import java.security.CodeSigner; import java.security.cert.Certificate; import java.security.AccessController; import java.security.PrivilegedAction; import java.security.PrivilegedExceptionAction; import java.security.PrivilegedActionException; import sun.net.www.ParseUtil; /* URL jar file is a common JarFile subtype used for JarURLConnection */ public class URLJarFile extends JarFile { /* * Interface to be able to call retrieve() in plugin if * this variable is set. */ private static URLJarFileCallBack callback = null; /* Controller of the Jar File's closing */ private URLJarFileCloseController closeController = null; private static int BUF_SIZE = 2048; private Manifest superMan; private Attributes superAttr; private Map superEntries; static JarFile getJarFile(URL url) throws IOException { return getJarFile(url, null); } static JarFile getJarFile(URL url, URLJarFileCloseController closeController) throws IOException { if (isFileURL(url)) { Runtime.Version version = "runtime".equals(url.getRef()) ? JarFile.runtimeVersion() : JarFile.baseVersion(); return new URLJarFile(url, closeController, version); } else { return retrieve(url, closeController); } } /* * Changed modifier from private to public in order to be able * to instantiate URLJarFile from sun.plugin package. */ public URLJarFile(File file) throws IOException { this(file, null); } /* * Changed modifier from private to public in order to be able * to instantiate URLJarFile from sun.plugin package. */ public URLJarFile(File file, URLJarFileCloseController closeController) throws IOException { super(file, true, ZipFile.OPEN_READ | ZipFile.OPEN_DELETE); this.closeController = closeController; } private URLJarFile(File file, URLJarFileCloseController closeController, Runtime.Version version) throws IOException { super(file, true, ZipFile.OPEN_READ | ZipFile.OPEN_DELETE, version); this.closeController = closeController; } private URLJarFile(URL url, URLJarFileCloseController closeController, Runtime.Version version) throws IOException { super(new File(ParseUtil.decode(url.getFile())), true, ZipFile.OPEN_READ, version); this.closeController = closeController; } private static boolean isFileURL(URL url) { if (url.getProtocol().equalsIgnoreCase("file")) { /* * Consider this a 'file' only if it's a LOCAL file, because * 'file:' URLs can be accessible through ftp. */ String host = url.getHost(); if (host == null || host.isEmpty() || host.equals("~") || host.equalsIgnoreCase("localhost")) return true; } return false; } /** * Returns the ZipEntry for the given entry name or * null if not found. * * @param name the JAR file entry name * @return the ZipEntry for the given entry name or * null if not found * @see java.util.zip.ZipEntry */ public ZipEntry getEntry(String name) { ZipEntry ze = super.getEntry(name); if (ze != null) { if (ze instanceof JarEntry) return new URLJarFileEntry((JarEntry)ze); else throw new InternalError(super.getClass() + " returned unexpected entry type " + ze.getClass()); } return null; } public Manifest getManifest() throws IOException { if (!isSuperMan()) { return null; } Manifest man = new Manifest(); Attributes attr = man.getMainAttributes(); attr.putAll((Map)superAttr.clone()); // now deep copy the manifest entries if (superEntries != null) { Map entries = man.getEntries(); for (String key : superEntries.keySet()) { Attributes at = superEntries.get(key); entries.put(key, (Attributes) at.clone()); } } return man; } /* If close controller is set the notify the controller about the pending close */ public void close() throws IOException { if (closeController != null) { closeController.close(this); } super.close(); } // optimal side-effects private synchronized boolean isSuperMan() throws IOException { if (superMan == null) { superMan = super.getManifest(); } if (superMan != null) { superAttr = superMan.getMainAttributes(); superEntries = superMan.getEntries(); return true; } else return false; } /** * Given a URL, retrieves a JAR file, caches it to disk, and creates a * cached JAR file object. */ private static JarFile retrieve(final URL url, final URLJarFileCloseController closeController) throws IOException { /* * See if interface is set, then call retrieve function of the class * that implements URLJarFileCallBack interface (sun.plugin - to * handle the cache failure for JARJAR file.) */ if (callback != null) { return callback.retrieve(url); } else { JarFile result = null; Runtime.Version version = "runtime".equals(url.getRef()) ? JarFile.runtimeVersion() : JarFile.baseVersion(); /* get the stream before asserting privileges */ try (final InputStream in = url.openConnection().getInputStream()) { result = AccessController.doPrivileged( new PrivilegedExceptionAction<>() { public JarFile run() throws IOException { Path tmpFile = Files.createTempFile("jar_cache", null); try { Files.copy(in, tmpFile, StandardCopyOption.REPLACE_EXISTING); JarFile jarFile = new URLJarFile(tmpFile.toFile(), closeController, version); tmpFile.toFile().deleteOnExit(); return jarFile; } catch (Throwable thr) { try { Files.delete(tmpFile); } catch (IOException ioe) { thr.addSuppressed(ioe); } throw thr; } } }); } catch (PrivilegedActionException pae) { throw (IOException) pae.getException(); } return result; } } /* * Set the call back interface to call retrive function in sun.plugin * package if plugin is running. */ public static void setCallBack(URLJarFileCallBack cb) { callback = cb; } private class URLJarFileEntry extends JarEntry { private JarEntry je; URLJarFileEntry(JarEntry je) { super(je); this.je=je; } public Attributes getAttributes() throws IOException { if (URLJarFile.this.isSuperMan()) { Map e = URLJarFile.this.superEntries; if (e != null) { Attributes a = e.get(getName()); if (a != null) return (Attributes)a.clone(); } } return null; } public java.security.cert.Certificate[] getCertificates() { Certificate[] certs = je.getCertificates(); return certs == null? null: certs.clone(); } public CodeSigner[] getCodeSigners() { CodeSigner[] csg = je.getCodeSigners(); return csg == null? null: csg.clone(); } } public interface URLJarFileCloseController { public void close(JarFile jarFile); } }