1 /*
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26
27 package com.sun.java.util.jar.pack;
28
29 import java.io.BufferedInputStream;
30 import java.io.File;
31 import java.io.FileInputStream;
32 import java.io.IOException;
33 import java.io.InputStream;
34 import java.nio.ByteBuffer;
35 import java.util.jar.JarOutputStream;
36 import java.util.jar.Pack200;
37 import java.util.zip.CRC32;
38 import java.util.zip.Deflater;
39 import java.util.zip.ZipEntry;
40 import java.util.zip.ZipOutputStream;
41
42 class NativeUnpack {
43 // Pointer to the native unpacker obj
44 private long unpackerPtr;
45
46 // Input stream.
47 private BufferedInputStream in;
48
49 private static synchronized native void initIDs();
50
51 // Starts processing at the indicated position in the buffer.
52 // If the buffer is null, the readInputFn callback is used to get bytes.
53 // Returns (s<<32|f), the number of following segments and files.
54 private synchronized native long start(ByteBuffer buf, long offset);
55
56 // Returns true if there's another, and fills in the parts.
57 private synchronized native boolean getNextFile(Object[] parts);
58
59 private synchronized native ByteBuffer getUnusedInput();
60
61 // Resets the engine and frees all resources.
62 // Returns total number of bytes consumed by the engine.
63 private synchronized native long finish();
64
65 // Setting state in the unpacker.
66 protected synchronized native boolean setOption(String opt, String value);
67 protected synchronized native String getOption(String opt);
68
69 private int _verbose;
70
71 // State for progress bar:
72 private long _byteCount; // bytes read in current segment
73 private int _segCount; // number of segs scanned
74 private int _fileCount; // number of files written
75 private long _estByteLimit; // estimate of eventual total
76 private int _estSegLimit; // ditto
77 private int _estFileLimit; // ditto
78 private int _prevPercent = -1; // for monotonicity
79
80 private final CRC32 _crc32 = new CRC32();
81 private byte[] _buf = new byte[1<<14];
82
83 private UnpackerImpl _p200;
84 private PropMap _props;
85
86 static {
87 // If loading from stand alone build uncomment this.
88 // System.loadLibrary("unpack");
89 java.security.AccessController.doPrivileged(
90 new sun.security.action.LoadLibraryAction("unpack"));
91 initIDs();
92 }
93
94 NativeUnpack(UnpackerImpl p200) {
95 super();
96 _p200 = p200;
97 _props = p200.props;
98 p200._nunp = this;
99 }
100
101 // for JNI callbacks
102 static private Object currentInstance() {
103 UnpackerImpl p200 = (UnpackerImpl) Utils.getTLGlobals();
104 return (p200 == null)? null: p200._nunp;
105 }
106
107 private synchronized long getUnpackerPtr() {
108 return unpackerPtr;
109 }
110
111 // Callback from the unpacker engine to get more data.
112 private long readInputFn(ByteBuffer pbuf, long minlen) throws IOException {
113 if (in == null) return 0; // nothing is readable
114 long maxlen = pbuf.capacity() - pbuf.position();
115 assert(minlen <= maxlen); // don't talk nonsense
116 long numread = 0;
117 int steps = 0;
118 while (numread < minlen) {
119 steps++;
120 // read available input, up to buf.length or maxlen
121 int readlen = _buf.length;
122 if (readlen > (maxlen - numread))
123 readlen = (int)(maxlen - numread);
124 int nr = in.read(_buf, 0, readlen);
125 if (nr <= 0) break;
126 numread += nr;
127 assert(numread <= maxlen);
128 // %%% get rid of this extra copy by using nio?
129 pbuf.put(_buf, 0, nr);
130 }
131 if (_verbose > 1)
132 Utils.log.fine("readInputFn("+minlen+","+maxlen+") => "+numread+" steps="+steps);
133 if (maxlen > 100) {
134 _estByteLimit = _byteCount + maxlen;
135 } else {
136 _estByteLimit = (_byteCount + numread) * 20;
137 }
138 _byteCount += numread;
139 updateProgress();
140 return numread;
141 }
142
143 private void updateProgress() {
144 // Progress is a combination of segment reading and file writing.
145 final double READ_WT = 0.33;
146 final double WRITE_WT = 0.67;
147 double readProgress = _segCount;
148 if (_estByteLimit > 0 && _byteCount > 0)
149 readProgress += (double)_byteCount / _estByteLimit;
150 double writeProgress = _fileCount;
151 double scaledProgress
152 = READ_WT * readProgress / Math.max(_estSegLimit,1)
153 + WRITE_WT * writeProgress / Math.max(_estFileLimit,1);
154 int percent = (int) Math.round(100*scaledProgress);
155 if (percent > 100) percent = 100;
156 if (percent > _prevPercent) {
157 _prevPercent = percent;
158 _props.setInteger(Pack200.Unpacker.PROGRESS, percent);
159 if (_verbose > 0)
160 Utils.log.info("progress = "+percent);
161 }
162 }
163
164 private void copyInOption(String opt) {
165 String val = _props.getProperty(opt);
166 if (_verbose > 0)
167 Utils.log.info("set "+opt+"="+val);
168 if (val != null) {
169 boolean set = setOption(opt, val);
170 if (!set)
171 Utils.log.warning("Invalid option "+opt+"="+val);
172 }
173 }
174
175 void run(InputStream inRaw, JarOutputStream jstream,
176 ByteBuffer presetInput) throws IOException {
177 BufferedInputStream in0 = new BufferedInputStream(inRaw);
178 this.in = in0; // for readInputFn to see
179 _verbose = _props.getInteger(Utils.DEBUG_VERBOSE);
180 // Fix for BugId: 4902477, -unpack.modification.time = 1059010598000
181 // TODO eliminate and fix in unpack.cpp
182
183 final int modtime = Pack200.Packer.KEEP.equals(_props.getProperty(Utils.UNPACK_MODIFICATION_TIME, "0")) ?
184 Constants.NO_MODTIME : _props.getTime(Utils.UNPACK_MODIFICATION_TIME);
185
186 copyInOption(Utils.DEBUG_VERBOSE);
187 copyInOption(Pack200.Unpacker.DEFLATE_HINT);
188 if (modtime == Constants.NO_MODTIME) // Dont pass KEEP && NOW
189 copyInOption(Utils.UNPACK_MODIFICATION_TIME);
190 updateProgress(); // reset progress bar
191 for (;;) {
192 // Read the packed bits.
193 long counts = start(presetInput, 0);
194 _byteCount = _estByteLimit = 0; // reset partial scan counts
195 ++_segCount; // just finished scanning a whole segment...
196 int nextSeg = (int)( counts >>> 32 );
197 int nextFile = (int)( counts >>> 0 );
198
199 // Estimate eventual total number of segments and files.
200 _estSegLimit = _segCount + nextSeg;
201 double filesAfterThisSeg = _fileCount + nextFile;
202 _estFileLimit = (int)( (filesAfterThisSeg *
203 _estSegLimit) / _segCount );
204
205 // Write the files.
206 int[] intParts = { 0,0, 0, 0 };
207 // intParts = {size.hi/lo, mod, defl}
208 Object[] parts = { intParts, null, null, null };
209 // parts = { {intParts}, name, data0/1 }
210 while (getNextFile(parts)) {
211 //BandStructure.printArrayTo(System.out, intParts, 0, parts.length);
212 String name = (String) parts[1];
213 long size = ( (long)intParts[0] << 32)
214 + (((long)intParts[1] << 32) >>> 32);
215
216 long mtime = (modtime != Constants.NO_MODTIME ) ?
217 modtime : intParts[2] ;
218 boolean deflateHint = (intParts[3] != 0);
219 ByteBuffer data0 = (ByteBuffer) parts[2];
220 ByteBuffer data1 = (ByteBuffer) parts[3];
221 writeEntry(jstream, name, mtime, size, deflateHint,
222 data0, data1);
223 ++_fileCount;
224 updateProgress();
225 }
226 presetInput = getUnusedInput();
227 long consumed = finish();
228 if (_verbose > 0)
229 Utils.log.info("bytes consumed = "+consumed);
230 if (presetInput == null &&
231 !Utils.isPackMagic(Utils.readMagic(in0))) {
232 break;
233 }
234 if (_verbose > 0 ) {
235 if (presetInput != null)
236 Utils.log.info("unused input = "+presetInput);
237 }
238 }
239 }
240
241 void run(InputStream in, JarOutputStream jstream) throws IOException {
242 run(in, jstream, null);
243 }
244
245 void run(File inFile, JarOutputStream jstream) throws IOException {
246 // %%% maybe memory-map the file, and pass it straight into unpacker
247 ByteBuffer mappedFile = null;
248 try (FileInputStream fis = new FileInputStream(inFile)) {
249 run(fis, jstream, mappedFile);
250 }
251 // Note: caller is responsible to finish with jstream.
252 }
253
254 private void writeEntry(JarOutputStream j, String name,
255 long mtime, long lsize, boolean deflateHint,
256 ByteBuffer data0, ByteBuffer data1) throws IOException {
257 int size = (int)lsize;
258 if (size != lsize)
259 throw new IOException("file too large: "+lsize);
260
261 CRC32 crc32 = _crc32;
262
263 if (_verbose > 1)
264 Utils.log.fine("Writing entry: "+name+" size="+size
265 +(deflateHint?" deflated":""));
266
267 if (_buf.length < size) {
268 int newSize = size;
269 while (newSize < _buf.length) {
270 newSize <<= 1;
271 if (newSize <= 0) {
272 newSize = size;
273 break;
274 }
275 }
276 _buf = new byte[newSize];
277 }
278 assert(_buf.length >= size);
279
280 int fillp = 0;
281 if (data0 != null) {
282 int size0 = data0.capacity();
283 data0.get(_buf, fillp, size0);
284 fillp += size0;
285 }
286 if (data1 != null) {
287 int size1 = data1.capacity();
288 data1.get(_buf, fillp, size1);
289 fillp += size1;
290 }
291 while (fillp < size) {
292 // Fill in rest of data from the stream itself.
293 int nr = in.read(_buf, fillp, size - fillp);
294 if (nr <= 0) throw new IOException("EOF at end of archive");
295 fillp += nr;
296 }
297
298 ZipEntry z = new ZipEntry(name);
299 z.setTime( (long)mtime * 1000);
300
301 if (size == 0) {
302 z.setMethod(ZipOutputStream.STORED);
303 z.setSize(0);
304 z.setCrc(0);
305 z.setCompressedSize(0);
306 } else if (!deflateHint) {
307 z.setMethod(ZipOutputStream.STORED);
308 z.setSize(size);
309 z.setCompressedSize(size);
310 crc32.reset();
311 crc32.update(_buf, 0, size);
312 z.setCrc(crc32.getValue());
313 } else {
314 z.setMethod(Deflater.DEFLATED);
315 z.setSize(size);
316 }
317
318 j.putNextEntry(z);
319
320 if (size > 0)
321 j.write(_buf, 0, size);
322
323 j.closeEntry();
324 if (_verbose > 0) Utils.log.info("Writing " + Utils.zeString(z));
325 }
326 }