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