1 /*
2 * Copyright (c) 2003, 2011, 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 java.security.PrivilegedAction<Void>() {
91 public Void run() {
92 System.loadLibrary("unpack");
93 return null;
94 }
95 });
96 initIDs();
97 }
98
99 NativeUnpack(UnpackerImpl p200) {
100 super();
101 _p200 = p200;
102 _props = p200.props;
103 p200._nunp = this;
104 }
105
106 // for JNI callbacks
107 static private Object currentInstance() {
108 UnpackerImpl p200 = (UnpackerImpl) Utils.getTLGlobals();
109 return (p200 == null)? null: p200._nunp;
110 }
111
112 // Callback from the unpacker engine to get more data.
113 private long readInputFn(ByteBuffer pbuf, long minlen) throws IOException {
114 if (in == null) return 0; // nothing is readable
115 long maxlen = pbuf.capacity() - pbuf.position();
116 assert(minlen <= maxlen); // don't talk nonsense
117 long numread = 0;
118 int steps = 0;
119 while (numread < minlen) {
120 steps++;
121 // read available input, up to buf.length or maxlen
122 int readlen = _buf.length;
123 if (readlen > (maxlen - numread))
124 readlen = (int)(maxlen - numread);
125 int nr = in.read(_buf, 0, readlen);
126 if (nr <= 0) break;
127 numread += nr;
128 assert(numread <= maxlen);
129 // %%% get rid of this extra copy by using nio?
130 pbuf.put(_buf, 0, nr);
131 }
132 if (_verbose > 1)
133 Utils.log.fine("readInputFn("+minlen+","+maxlen+") => "+numread+" steps="+steps);
134 if (maxlen > 100) {
135 _estByteLimit = _byteCount + maxlen;
136 } else {
137 _estByteLimit = (_byteCount + numread) * 20;
138 }
139 _byteCount += numread;
140 updateProgress();
141 return numread;
142 }
143
144 private void updateProgress() {
145 // Progress is a combination of segment reading and file writing.
146 final double READ_WT = 0.33;
147 final double WRITE_WT = 0.67;
148 double readProgress = _segCount;
149 if (_estByteLimit > 0 && _byteCount > 0)
150 readProgress += (double)_byteCount / _estByteLimit;
151 double writeProgress = _fileCount;
152 double scaledProgress
153 = READ_WT * readProgress / Math.max(_estSegLimit,1)
154 + WRITE_WT * writeProgress / Math.max(_estFileLimit,1);
155 int percent = (int) Math.round(100*scaledProgress);
156 if (percent > 100) percent = 100;
157 if (percent > _prevPercent) {
158 _prevPercent = percent;
159 _props.setInteger(Pack200.Unpacker.PROGRESS, percent);
160 if (_verbose > 0)
161 Utils.log.info("progress = "+percent);
162 }
163 }
164
165 private void copyInOption(String opt) {
166 String val = _props.getProperty(opt);
167 if (_verbose > 0)
168 Utils.log.info("set "+opt+"="+val);
169 if (val != null) {
170 boolean set = setOption(opt, val);
171 if (!set)
172 Utils.log.warning("Invalid option "+opt+"="+val);
173 }
174 }
175
176 void run(InputStream inRaw, JarOutputStream jstream,
177 ByteBuffer presetInput) throws IOException {
178 BufferedInputStream in0 = new BufferedInputStream(inRaw);
179 this.in = in0; // for readInputFn to see
180 _verbose = _props.getInteger(Utils.DEBUG_VERBOSE);
181 // Fix for BugId: 4902477, -unpack.modification.time = 1059010598000
182 // TODO eliminate and fix in unpack.cpp
183
184 final int modtime = Pack200.Packer.KEEP.equals(_props.getProperty(Utils.UNPACK_MODIFICATION_TIME, "0")) ?
185 Constants.NO_MODTIME : _props.getTime(Utils.UNPACK_MODIFICATION_TIME);
186
187 copyInOption(Utils.DEBUG_VERBOSE);
188 copyInOption(Pack200.Unpacker.DEFLATE_HINT);
189 if (modtime == Constants.NO_MODTIME) // Dont pass KEEP && NOW
190 copyInOption(Utils.UNPACK_MODIFICATION_TIME);
191 updateProgress(); // reset progress bar
192 for (;;) {
193 // Read the packed bits.
194 long counts = start(presetInput, 0);
195 _byteCount = _estByteLimit = 0; // reset partial scan counts
196 ++_segCount; // just finished scanning a whole segment...
197 int nextSeg = (int)( counts >>> 32 );
198 int nextFile = (int)( counts >>> 0 );
199
200 // Estimate eventual total number of segments and files.
201 _estSegLimit = _segCount + nextSeg;
202 double filesAfterThisSeg = _fileCount + nextFile;
203 _estFileLimit = (int)( (filesAfterThisSeg *
204 _estSegLimit) / _segCount );
205
206 // Write the files.
207 int[] intParts = { 0,0, 0, 0 };
208 // intParts = {size.hi/lo, mod, defl}
209 Object[] parts = { intParts, null, null, null };
210 // parts = { {intParts}, name, data0/1 }
211 while (getNextFile(parts)) {
212 //BandStructure.printArrayTo(System.out, intParts, 0, parts.length);
213 String name = (String) parts[1];
214 long size = ( (long)intParts[0] << 32)
215 + (((long)intParts[1] << 32) >>> 32);
216
217 long mtime = (modtime != Constants.NO_MODTIME ) ?
218 modtime : intParts[2] ;
219 boolean deflateHint = (intParts[3] != 0);
220 ByteBuffer data0 = (ByteBuffer) parts[2];
221 ByteBuffer data1 = (ByteBuffer) parts[3];
222 writeEntry(jstream, name, mtime, size, deflateHint,
223 data0, data1);
224 ++_fileCount;
225 updateProgress();
226 }
227 presetInput = getUnusedInput();
228 long consumed = finish();
229 if (_verbose > 0)
230 Utils.log.info("bytes consumed = "+consumed);
231 if (presetInput == null &&
232 !Utils.isPackMagic(Utils.readMagic(in0))) {
233 break;
234 }
235 if (_verbose > 0 ) {
236 if (presetInput != null)
237 Utils.log.info("unused input = "+presetInput);
238 }
239 }
240 }
241
242 void run(InputStream in, JarOutputStream jstream) throws IOException {
243 run(in, jstream, null);
244 }
245
246 void run(File inFile, JarOutputStream jstream) throws IOException {
247 // %%% maybe memory-map the file, and pass it straight into unpacker
248 ByteBuffer mappedFile = null;
249 try (FileInputStream fis = new FileInputStream(inFile)) {
250 run(fis, jstream, mappedFile);
251 }
252 // Note: caller is responsible to finish with jstream.
253 }
254
255 private void writeEntry(JarOutputStream j, String name,
256 long mtime, long lsize, boolean deflateHint,
257 ByteBuffer data0, ByteBuffer data1) throws IOException {
258 int size = (int)lsize;
259 if (size != lsize)
260 throw new IOException("file too large: "+lsize);
261
262 CRC32 crc32 = _crc32;
263
264 if (_verbose > 1)
265 Utils.log.fine("Writing entry: "+name+" size="+size
266 +(deflateHint?" deflated":""));
267
268 if (_buf.length < size) {
269 int newSize = size;
270 while (newSize < _buf.length) {
271 newSize <<= 1;
272 if (newSize <= 0) {
273 newSize = size;
274 break;
275 }
276 }
277 _buf = new byte[newSize];
278 }
279 assert(_buf.length >= size);
280
281 int fillp = 0;
282 if (data0 != null) {
283 int size0 = data0.capacity();
284 data0.get(_buf, fillp, size0);
285 fillp += size0;
286 }
287 if (data1 != null) {
288 int size1 = data1.capacity();
289 data1.get(_buf, fillp, size1);
290 fillp += size1;
291 }
292 while (fillp < size) {
293 // Fill in rest of data from the stream itself.
294 int nr = in.read(_buf, fillp, size - fillp);
295 if (nr <= 0) throw new IOException("EOF at end of archive");
296 fillp += nr;
297 }
298
299 ZipEntry z = new ZipEntry(name);
300 z.setTime(mtime * 1000);
301
302 if (size == 0) {
303 z.setMethod(ZipOutputStream.STORED);
304 z.setSize(0);
305 z.setCrc(0);
306 z.setCompressedSize(0);
307 } else if (!deflateHint) {
308 z.setMethod(ZipOutputStream.STORED);
309 z.setSize(size);
310 z.setCompressedSize(size);
311 crc32.reset();
312 crc32.update(_buf, 0, size);
313 z.setCrc(crc32.getValue());
314 } else {
315 z.setMethod(Deflater.DEFLATED);
316 z.setSize(size);
317 }
318
319 j.putNextEntry(z);
320
321 if (size > 0)
322 j.write(_buf, 0, size);
323
324 j.closeEntry();
325 if (_verbose > 0) Utils.log.info("Writing " + Utils.zeString(z));
326 }
327 }