| /* |
| * Copyright (c) 2003, 2015, 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 com.sun.java.util.jar.pack; |
| |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.time.LocalDateTime; |
| import java.time.ZoneOffset; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.SortedMap; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarInputStream; |
| import java.util.jar.JarOutputStream; |
| import java.util.jar.Pack200; |
| import java.util.zip.CRC32; |
| import java.util.zip.CheckedOutputStream; |
| import java.util.zip.ZipEntry; |
| |
| /* |
| * Implementation of the Pack provider. |
| * </pre></blockquote> |
| * @author John Rose |
| * @author Kumar Srinivasan |
| */ |
| |
| |
| public class UnpackerImpl extends TLGlobals implements Pack200.Unpacker { |
| |
| public UnpackerImpl() {} |
| |
| |
| |
| /** |
| * Get the set of options for the pack and unpack engines. |
| * @return A sorted association of option key strings to option values. |
| */ |
| public SortedMap<String, String> properties() { |
| return props; |
| } |
| |
| // Back-pointer to NativeUnpacker, when active. |
| Object _nunp; |
| |
| |
| public String toString() { |
| return Utils.getVersionString(); |
| } |
| |
| //Driver routines |
| |
| // The unpack worker... |
| /** |
| * Takes a packed-stream InputStream, and writes to a JarOutputStream. Internally |
| * the entire buffer must be read, it may be more efficient to read the packed-stream |
| * to a file and pass the File object, in the alternate method described below. |
| * <p> |
| * Closes its input but not its output. (The output can accumulate more elements.) |
| * @param in an InputStream. |
| * @param out a JarOutputStream. |
| * @exception IOException if an error is encountered. |
| */ |
| public synchronized void unpack(InputStream in, JarOutputStream out) throws IOException { |
| if (in == null) { |
| throw new NullPointerException("null input"); |
| } |
| if (out == null) { |
| throw new NullPointerException("null output"); |
| } |
| assert(Utils.currentInstance.get() == null); |
| |
| try { |
| Utils.currentInstance.set(this); |
| final int verbose = props.getInteger(Utils.DEBUG_VERBOSE); |
| BufferedInputStream in0 = new BufferedInputStream(in); |
| if (Utils.isJarMagic(Utils.readMagic(in0))) { |
| if (verbose > 0) |
| Utils.log.info("Copying unpacked JAR file..."); |
| Utils.copyJarFile(new JarInputStream(in0), out); |
| } else if (props.getBoolean(Utils.DEBUG_DISABLE_NATIVE)) { |
| (new DoUnpack()).run(in0, out); |
| in0.close(); |
| Utils.markJarFile(out); |
| } else { |
| try { |
| (new NativeUnpack(this)).run(in0, out); |
| } catch (UnsatisfiedLinkError | NoClassDefFoundError ex) { |
| // failover to java implementation |
| (new DoUnpack()).run(in0, out); |
| } |
| in0.close(); |
| Utils.markJarFile(out); |
| } |
| } finally { |
| _nunp = null; |
| Utils.currentInstance.set(null); |
| } |
| } |
| |
| /** |
| * Takes an input File containing the pack file, and generates a JarOutputStream. |
| * <p> |
| * Does not close its output. (The output can accumulate more elements.) |
| * @param in a File. |
| * @param out a JarOutputStream. |
| * @exception IOException if an error is encountered. |
| */ |
| public synchronized void unpack(File in, JarOutputStream out) throws IOException { |
| if (in == null) { |
| throw new NullPointerException("null input"); |
| } |
| if (out == null) { |
| throw new NullPointerException("null output"); |
| } |
| // Use the stream-based implementation. |
| // %%% Reconsider if native unpacker learns to memory-map the file. |
| try (FileInputStream instr = new FileInputStream(in)) { |
| unpack(instr, out); |
| } |
| if (props.getBoolean(Utils.UNPACK_REMOVE_PACKFILE)) { |
| in.delete(); |
| } |
| } |
| |
| private class DoUnpack { |
| final int verbose = props.getInteger(Utils.DEBUG_VERBOSE); |
| |
| { |
| props.setInteger(Pack200.Unpacker.PROGRESS, 0); |
| } |
| |
| // Here's where the bits are read from disk: |
| final Package pkg = new Package(); |
| |
| final boolean keepModtime |
| = Pack200.Packer.KEEP.equals( |
| props.getProperty(Utils.UNPACK_MODIFICATION_TIME, Pack200.Packer.KEEP)); |
| final boolean keepDeflateHint |
| = Pack200.Packer.KEEP.equals( |
| props.getProperty(Pack200.Unpacker.DEFLATE_HINT, Pack200.Packer.KEEP)); |
| final int modtime; |
| final boolean deflateHint; |
| { |
| if (!keepModtime) { |
| modtime = props.getTime(Utils.UNPACK_MODIFICATION_TIME); |
| } else { |
| modtime = pkg.default_modtime; |
| } |
| |
| deflateHint = (keepDeflateHint) ? false : |
| props.getBoolean(java.util.jar.Pack200.Unpacker.DEFLATE_HINT); |
| } |
| |
| // Checksum apparatus. |
| final CRC32 crc = new CRC32(); |
| final ByteArrayOutputStream bufOut = new ByteArrayOutputStream(); |
| final OutputStream crcOut = new CheckedOutputStream(bufOut, crc); |
| |
| public void run(BufferedInputStream in, JarOutputStream out) throws IOException { |
| if (verbose > 0) { |
| props.list(System.out); |
| } |
| for (int seg = 1; ; seg++) { |
| unpackSegment(in, out); |
| |
| // Try to get another segment. |
| if (!Utils.isPackMagic(Utils.readMagic(in))) break; |
| if (verbose > 0) |
| Utils.log.info("Finished segment #"+seg); |
| } |
| } |
| |
| private void unpackSegment(InputStream in, JarOutputStream out) throws IOException { |
| props.setProperty(java.util.jar.Pack200.Unpacker.PROGRESS,"0"); |
| // Process the output directory or jar output. |
| new PackageReader(pkg, in).read(); |
| |
| if (props.getBoolean("unpack.strip.debug")) pkg.stripAttributeKind("Debug"); |
| if (props.getBoolean("unpack.strip.compile")) pkg.stripAttributeKind("Compile"); |
| props.setProperty(java.util.jar.Pack200.Unpacker.PROGRESS,"50"); |
| pkg.ensureAllClassFiles(); |
| // Now write out the files. |
| Set<Package.Class> classesToWrite = new HashSet<>(pkg.getClasses()); |
| for (Package.File file : pkg.getFiles()) { |
| String name = file.nameString; |
| JarEntry je = new JarEntry(Utils.getJarEntryName(name)); |
| boolean deflate; |
| |
| deflate = (keepDeflateHint) |
| ? (((file.options & Constants.FO_DEFLATE_HINT) != 0) || |
| ((pkg.default_options & Constants.AO_DEFLATE_HINT) != 0)) |
| : deflateHint; |
| |
| boolean needCRC = !deflate; // STORE mode requires CRC |
| |
| if (needCRC) crc.reset(); |
| bufOut.reset(); |
| if (file.isClassStub()) { |
| Package.Class cls = file.getStubClass(); |
| assert(cls != null); |
| new ClassWriter(cls, needCRC ? crcOut : bufOut).write(); |
| classesToWrite.remove(cls); // for an error check |
| } else { |
| // collect data & maybe CRC |
| file.writeTo(needCRC ? crcOut : bufOut); |
| } |
| je.setMethod(deflate ? JarEntry.DEFLATED : JarEntry.STORED); |
| if (needCRC) { |
| if (verbose > 0) |
| Utils.log.info("stored size="+bufOut.size()+" and crc="+crc.getValue()); |
| |
| je.setMethod(JarEntry.STORED); |
| je.setSize(bufOut.size()); |
| je.setCrc(crc.getValue()); |
| } |
| if (keepModtime) { |
| LocalDateTime ldt = LocalDateTime |
| .ofEpochSecond(file.modtime, 0, ZoneOffset.UTC); |
| je.setTimeLocal(ldt); |
| } else { |
| je.setTime((long)modtime * 1000); |
| } |
| out.putNextEntry(je); |
| bufOut.writeTo(out); |
| out.closeEntry(); |
| if (verbose > 0) |
| Utils.log.info("Writing "+Utils.zeString((ZipEntry)je)); |
| } |
| assert(classesToWrite.isEmpty()); |
| props.setProperty(java.util.jar.Pack200.Unpacker.PROGRESS,"100"); |
| pkg.reset(); // reset for the next segment, if any |
| } |
| } |
| } |