1 /*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 //
18 // Access to Zip archives.
19 //
20
21 #define LOG_TAG "zip"
22
23 #include <utils/Log.h>
24 #include <ziparchive/zip_archive.h>
25
26 #include "ZipFile.h"
27
28 #include <zlib.h>
29
30 #include "zopfli/deflate.h"
31
32 #include <memory.h>
33 #include <sys/stat.h>
34 #include <errno.h>
35 #include <assert.h>
36 #include <inttypes.h>
37
38 namespace android {
39
40 /*
41 * Some environments require the "b", some choke on it.
42 */
43 #define FILE_OPEN_RO "rb"
44 #define FILE_OPEN_RW "r+b"
45 #define FILE_OPEN_RW_CREATE "w+b"
46
47 /* should live somewhere else? */
errnoToStatus(int err)48 static status_t errnoToStatus(int err)
49 {
50 if (err == ENOENT)
51 return NAME_NOT_FOUND;
52 else if (err == EACCES)
53 return PERMISSION_DENIED;
54 else
55 return UNKNOWN_ERROR;
56 }
57
58 /*
59 * Open a file and parse its guts.
60 */
open(const char * zipFileName,int flags)61 status_t ZipFile::open(const char* zipFileName, int flags)
62 {
63 bool newArchive = false;
64
65 assert(mZipFp == NULL); // no reopen
66
67 if ((flags & kOpenTruncate))
68 flags |= kOpenCreate; // trunc implies create
69
70 if ((flags & kOpenReadOnly) && (flags & kOpenReadWrite))
71 return INVALID_OPERATION; // not both
72 if (!((flags & kOpenReadOnly) || (flags & kOpenReadWrite)))
73 return INVALID_OPERATION; // not neither
74 if ((flags & kOpenCreate) && !(flags & kOpenReadWrite))
75 return INVALID_OPERATION; // create requires write
76
77 if (flags & kOpenTruncate) {
78 newArchive = true;
79 } else {
80 newArchive = (access(zipFileName, F_OK) != 0);
81 if (!(flags & kOpenCreate) && newArchive) {
82 /* not creating, must already exist */
83 ALOGD("File %s does not exist", zipFileName);
84 return NAME_NOT_FOUND;
85 }
86 }
87
88 /* open the file */
89 const char* openflags;
90 if (flags & kOpenReadWrite) {
91 if (newArchive)
92 openflags = FILE_OPEN_RW_CREATE;
93 else
94 openflags = FILE_OPEN_RW;
95 } else {
96 openflags = FILE_OPEN_RO;
97 }
98 mZipFp = fopen(zipFileName, openflags);
99 if (mZipFp == NULL) {
100 int err = errno;
101 ALOGD("fopen failed: %d\n", err);
102 return errnoToStatus(err);
103 }
104
105 status_t result;
106 if (!newArchive) {
107 /*
108 * Load the central directory. If that fails, then this probably
109 * isn't a Zip archive.
110 */
111 result = readCentralDir();
112 } else {
113 /*
114 * Newly-created. The EndOfCentralDir constructor actually
115 * sets everything to be the way we want it (all zeroes). We
116 * set mNeedCDRewrite so that we create *something* if the
117 * caller doesn't add any files. (We could also just unlink
118 * the file if it's brand new and nothing was added, but that's
119 * probably doing more than we really should -- the user might
120 * have a need for empty zip files.)
121 */
122 mNeedCDRewrite = true;
123 result = OK;
124 }
125
126 if (flags & kOpenReadOnly)
127 mReadOnly = true;
128 else
129 assert(!mReadOnly);
130
131 return result;
132 }
133
134 /*
135 * Return the Nth entry in the archive.
136 */
getEntryByIndex(int idx) const137 ZipEntry* ZipFile::getEntryByIndex(int idx) const
138 {
139 if (idx < 0 || idx >= (int) mEntries.size())
140 return NULL;
141
142 return mEntries[idx];
143 }
144
145 /*
146 * Find an entry by name.
147 */
getEntryByName(const char * fileName) const148 ZipEntry* ZipFile::getEntryByName(const char* fileName) const
149 {
150 /*
151 * Do a stupid linear string-compare search.
152 *
153 * There are various ways to speed this up, especially since it's rare
154 * to intermingle changes to the archive with "get by name" calls. We
155 * don't want to sort the mEntries vector itself, however, because
156 * it's used to recreate the Central Directory.
157 *
158 * (Hash table works, parallel list of pointers in sorted order is good.)
159 */
160 int idx;
161
162 for (idx = mEntries.size()-1; idx >= 0; idx--) {
163 ZipEntry* pEntry = mEntries[idx];
164 if (!pEntry->getDeleted() &&
165 strcmp(fileName, pEntry->getFileName()) == 0)
166 {
167 return pEntry;
168 }
169 }
170
171 return NULL;
172 }
173
174 /*
175 * Empty the mEntries vector.
176 */
discardEntries(void)177 void ZipFile::discardEntries(void)
178 {
179 int count = mEntries.size();
180
181 while (--count >= 0)
182 delete mEntries[count];
183
184 mEntries.clear();
185 }
186
187
188 /*
189 * Find the central directory and read the contents.
190 *
191 * The fun thing about ZIP archives is that they may or may not be
192 * readable from start to end. In some cases, notably for archives
193 * that were written to stdout, the only length information is in the
194 * central directory at the end of the file.
195 *
196 * Of course, the central directory can be followed by a variable-length
197 * comment field, so we have to scan through it backwards. The comment
198 * is at most 64K, plus we have 18 bytes for the end-of-central-dir stuff
199 * itself, plus apparently sometimes people throw random junk on the end
200 * just for the fun of it.
201 *
202 * This is all a little wobbly. If the wrong value ends up in the EOCD
203 * area, we're hosed. This appears to be the way that everbody handles
204 * it though, so we're in pretty good company if this fails.
205 */
readCentralDir(void)206 status_t ZipFile::readCentralDir(void)
207 {
208 status_t result = OK;
209 uint8_t* buf = NULL;
210 off_t fileLength, seekStart;
211 long readAmount;
212 int i;
213
214 fseek(mZipFp, 0, SEEK_END);
215 fileLength = ftell(mZipFp);
216 rewind(mZipFp);
217
218 /* too small to be a ZIP archive? */
219 if (fileLength < EndOfCentralDir::kEOCDLen) {
220 ALOGD("Length is %ld -- too small\n", (long)fileLength);
221 result = INVALID_OPERATION;
222 goto bail;
223 }
224
225 buf = new uint8_t[EndOfCentralDir::kMaxEOCDSearch];
226 if (buf == NULL) {
227 ALOGD("Failure allocating %d bytes for EOCD search",
228 EndOfCentralDir::kMaxEOCDSearch);
229 result = NO_MEMORY;
230 goto bail;
231 }
232
233 if (fileLength > EndOfCentralDir::kMaxEOCDSearch) {
234 seekStart = fileLength - EndOfCentralDir::kMaxEOCDSearch;
235 readAmount = EndOfCentralDir::kMaxEOCDSearch;
236 } else {
237 seekStart = 0;
238 readAmount = (long) fileLength;
239 }
240 if (fseek(mZipFp, seekStart, SEEK_SET) != 0) {
241 ALOGD("Failure seeking to end of zip at %ld", (long) seekStart);
242 result = UNKNOWN_ERROR;
243 goto bail;
244 }
245
246 /* read the last part of the file into the buffer */
247 if (fread(buf, 1, readAmount, mZipFp) != (size_t) readAmount) {
248 if (feof(mZipFp)) {
249 ALOGW("fread %ld bytes failed, unexpected EOF", readAmount);
250 } else {
251 ALOGW("fread %ld bytes failed, %s", readAmount, strerror(errno));
252 }
253 result = UNKNOWN_ERROR;
254 goto bail;
255 }
256
257 /* find the end-of-central-dir magic */
258 for (i = readAmount - 4; i >= 0; i--) {
259 if (buf[i] == 0x50 &&
260 ZipEntry::getLongLE(&buf[i]) == EndOfCentralDir::kSignature)
261 {
262 ALOGV("+++ Found EOCD at buf+%d\n", i);
263 break;
264 }
265 }
266 if (i < 0) {
267 ALOGD("EOCD not found, not Zip\n");
268 result = INVALID_OPERATION;
269 goto bail;
270 }
271
272 /* extract eocd values */
273 result = mEOCD.readBuf(buf + i, readAmount - i);
274 if (result != OK) {
275 ALOGD("Failure reading %ld bytes of EOCD values", readAmount - i);
276 goto bail;
277 }
278 //mEOCD.dump();
279
280 if (mEOCD.mDiskNumber != 0 || mEOCD.mDiskWithCentralDir != 0 ||
281 mEOCD.mNumEntries != mEOCD.mTotalNumEntries)
282 {
283 ALOGD("Archive spanning not supported\n");
284 result = INVALID_OPERATION;
285 goto bail;
286 }
287
288 /*
289 * So far so good. "mCentralDirSize" is the size in bytes of the
290 * central directory, so we can just seek back that far to find it.
291 * We can also seek forward mCentralDirOffset bytes from the
292 * start of the file.
293 *
294 * We're not guaranteed to have the rest of the central dir in the
295 * buffer, nor are we guaranteed that the central dir will have any
296 * sort of convenient size. We need to skip to the start of it and
297 * read the header, then the other goodies.
298 *
299 * The only thing we really need right now is the file comment, which
300 * we're hoping to preserve.
301 */
302 if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
303 ALOGD("Failure seeking to central dir offset %" PRIu32 "\n",
304 mEOCD.mCentralDirOffset);
305 result = UNKNOWN_ERROR;
306 goto bail;
307 }
308
309 /*
310 * Loop through and read the central dir entries.
311 */
312 ALOGV("Scanning %" PRIu16 " entries...\n", mEOCD.mTotalNumEntries);
313 int entry;
314 for (entry = 0; entry < mEOCD.mTotalNumEntries; entry++) {
315 ZipEntry* pEntry = new ZipEntry;
316
317 result = pEntry->initFromCDE(mZipFp);
318 if (result != OK) {
319 ALOGD("initFromCDE failed\n");
320 delete pEntry;
321 goto bail;
322 }
323
324 mEntries.add(pEntry);
325 }
326
327
328 /*
329 * If all went well, we should now be back at the EOCD.
330 */
331 {
332 uint8_t checkBuf[4];
333 if (fread(checkBuf, 1, 4, mZipFp) != 4) {
334 if (feof(mZipFp)) {
335 ALOGW("fread EOCD failed, unexpected EOF");
336 } else {
337 ALOGW("fread EOCD failed, %s", strerror(errno));
338 }
339 result = INVALID_OPERATION;
340 goto bail;
341 }
342 if (ZipEntry::getLongLE(checkBuf) != EndOfCentralDir::kSignature) {
343 ALOGD("EOCD read check failed\n");
344 result = UNKNOWN_ERROR;
345 goto bail;
346 }
347 ALOGV("+++ EOCD read check passed\n");
348 }
349
350 bail:
351 delete[] buf;
352 return result;
353 }
354
355
356 /*
357 * Add a new file to the archive.
358 *
359 * This requires creating and populating a ZipEntry structure, and copying
360 * the data into the file at the appropriate position. The "appropriate
361 * position" is the current location of the central directory, which we
362 * casually overwrite (we can put it back later).
363 *
364 * If we were concerned about safety, we would want to make all changes
365 * in a temp file and then overwrite the original after everything was
366 * safely written. Not really a concern for us.
367 */
addCommon(const char * fileName,const void * data,size_t size,const char * storageName,int compressionMethod,ZipEntry ** ppEntry)368 status_t ZipFile::addCommon(const char* fileName, const void* data, size_t size,
369 const char* storageName, int compressionMethod, ZipEntry** ppEntry)
370 {
371 ZipEntry* pEntry = NULL;
372 status_t result = OK;
373 long lfhPosn, startPosn, endPosn, uncompressedLen;
374 FILE* inputFp = NULL;
375 uint32_t crc;
376 time_t modWhen;
377
378 if (mReadOnly)
379 return INVALID_OPERATION;
380
381 assert(compressionMethod == ZipEntry::kCompressDeflated ||
382 compressionMethod == ZipEntry::kCompressStored);
383
384 /* make sure we're in a reasonable state */
385 assert(mZipFp != NULL);
386 assert(mEntries.size() == mEOCD.mTotalNumEntries);
387
388 /* make sure it doesn't already exist */
389 if (getEntryByName(storageName) != NULL)
390 return ALREADY_EXISTS;
391
392 if (!data) {
393 inputFp = fopen(fileName, FILE_OPEN_RO);
394 if (inputFp == NULL)
395 return errnoToStatus(errno);
396 }
397
398 if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
399 result = UNKNOWN_ERROR;
400 goto bail;
401 }
402
403 pEntry = new ZipEntry;
404 pEntry->initNew(storageName, NULL);
405
406 /*
407 * From here on out, failures are more interesting.
408 */
409 mNeedCDRewrite = true;
410
411 /*
412 * Write the LFH, even though it's still mostly blank. We need it
413 * as a place-holder. In theory the LFH isn't necessary, but in
414 * practice some utilities demand it.
415 */
416 lfhPosn = ftell(mZipFp);
417 pEntry->mLFH.write(mZipFp);
418 startPosn = ftell(mZipFp);
419
420 /*
421 * Copy the data in, possibly compressing it as we go.
422 */
423 if (compressionMethod == ZipEntry::kCompressDeflated) {
424 bool failed = false;
425 result = compressFpToFp(mZipFp, inputFp, data, size, &crc);
426 if (result != OK) {
427 ALOGD("compression failed, storing\n");
428 failed = true;
429 } else {
430 /*
431 * Make sure it has compressed "enough". This probably ought
432 * to be set through an API call, but I don't expect our
433 * criteria to change over time.
434 */
435 long src = inputFp ? ftell(inputFp) : size;
436 long dst = ftell(mZipFp) - startPosn;
437 if (dst + (dst / 10) > src) {
438 ALOGD("insufficient compression (src=%ld dst=%ld), storing\n",
439 src, dst);
440 failed = true;
441 }
442 }
443
444 if (failed) {
445 compressionMethod = ZipEntry::kCompressStored;
446 if (inputFp) rewind(inputFp);
447 fseek(mZipFp, startPosn, SEEK_SET);
448 /* fall through to kCompressStored case */
449 }
450 }
451 /* handle "no compression" request, or failed compression from above */
452 if (compressionMethod == ZipEntry::kCompressStored) {
453 if (inputFp) {
454 result = copyFpToFp(mZipFp, inputFp, &crc);
455 } else {
456 result = copyDataToFp(mZipFp, data, size, &crc);
457 }
458 if (result != OK) {
459 // don't need to truncate; happens in CDE rewrite
460 ALOGD("failed copying data in\n");
461 goto bail;
462 }
463 }
464
465 // currently seeked to end of file
466 uncompressedLen = inputFp ? ftell(inputFp) : size;
467
468 /*
469 * We could write the "Data Descriptor", but there doesn't seem to
470 * be any point since we're going to go back and write the LFH.
471 *
472 * Update file offsets.
473 */
474 endPosn = ftell(mZipFp); // seeked to end of compressed data
475
476 /*
477 * Success! Fill out new values.
478 */
479 pEntry->setDataInfo(uncompressedLen, endPosn - startPosn, crc,
480 compressionMethod);
481 modWhen = getModTime(inputFp ? fileno(inputFp) : fileno(mZipFp));
482 pEntry->setModWhen(modWhen);
483 pEntry->setLFHOffset(lfhPosn);
484 mEOCD.mNumEntries++;
485 mEOCD.mTotalNumEntries++;
486 mEOCD.mCentralDirSize = 0; // mark invalid; set by flush()
487 mEOCD.mCentralDirOffset = endPosn;
488
489 /*
490 * Go back and write the LFH.
491 */
492 if (fseek(mZipFp, lfhPosn, SEEK_SET) != 0) {
493 result = UNKNOWN_ERROR;
494 goto bail;
495 }
496 pEntry->mLFH.write(mZipFp);
497
498 /*
499 * Add pEntry to the list.
500 */
501 mEntries.add(pEntry);
502 if (ppEntry != NULL)
503 *ppEntry = pEntry;
504 pEntry = NULL;
505
506 bail:
507 if (inputFp != NULL)
508 fclose(inputFp);
509 delete pEntry;
510 return result;
511 }
512
513 /*
514 * Based on the current position in the output zip, assess where the entry
515 * payload will end up if written as-is. If alignment is not satisfactory,
516 * add some padding in the extra field.
517 *
518 */
alignEntry(android::ZipEntry * pEntry,uint32_t alignTo)519 status_t ZipFile::alignEntry(android::ZipEntry* pEntry, uint32_t alignTo){
520 if (alignTo == 0 || alignTo == 1)
521 return OK;
522
523 // Calculate where the entry payload offset will end up if we were to write
524 // it as-is.
525 uint64_t expectedPayloadOffset = ftell(mZipFp) +
526 android::ZipEntry::LocalFileHeader::kLFHLen +
527 pEntry->mLFH.mFileNameLength +
528 pEntry->mLFH.mExtraFieldLength;
529
530 // If the alignment is not what was requested, add some padding in the extra
531 // so the payload ends up where is requested.
532 uint64_t alignDiff = alignTo - (expectedPayloadOffset % alignTo);
533 if (alignDiff == alignTo)
534 return OK;
535
536 return pEntry->addPadding(alignDiff);
537 }
538
539 /*
540 * Add an entry by copying it from another zip file. If "padding" is
541 * nonzero, the specified number of bytes will be added to the "extra"
542 * field in the header.
543 *
544 * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
545 */
add(const ZipFile * pSourceZip,const ZipEntry * pSourceEntry,int alignTo,ZipEntry ** ppEntry)546 status_t ZipFile::add(const ZipFile* pSourceZip, const ZipEntry* pSourceEntry,
547 int alignTo, ZipEntry** ppEntry)
548 {
549 ZipEntry* pEntry = NULL;
550 status_t result;
551 long lfhPosn, endPosn;
552
553 if (mReadOnly)
554 return INVALID_OPERATION;
555
556 /* make sure we're in a reasonable state */
557 assert(mZipFp != NULL);
558 assert(mEntries.size() == mEOCD.mTotalNumEntries);
559
560 if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
561 result = UNKNOWN_ERROR;
562 goto bail;
563 }
564
565 pEntry = new ZipEntry;
566 if (pEntry == NULL) {
567 result = NO_MEMORY;
568 goto bail;
569 }
570
571 result = pEntry->initFromExternal(pSourceEntry);
572 if (result != OK)
573 goto bail;
574
575 result = alignEntry(pEntry, alignTo);
576 if (result != OK)
577 goto bail;
578
579 /*
580 * From here on out, failures are more interesting.
581 */
582 mNeedCDRewrite = true;
583
584 /*
585 * Write the LFH. Since we're not recompressing the data, we already
586 * have all of the fields filled out.
587 */
588 lfhPosn = ftell(mZipFp);
589 pEntry->mLFH.write(mZipFp);
590
591 /*
592 * Copy the data over.
593 *
594 * If the "has data descriptor" flag is set, we want to copy the DD
595 * fields as well. This is a fixed-size area immediately following
596 * the data.
597 */
598 if (fseek(pSourceZip->mZipFp, pSourceEntry->getFileOffset(), SEEK_SET) != 0)
599 {
600 result = UNKNOWN_ERROR;
601 goto bail;
602 }
603
604 off_t copyLen;
605 copyLen = pSourceEntry->getCompressedLen();
606 if ((pSourceEntry->mLFH.mGPBitFlag & ZipEntry::kUsesDataDescr) != 0)
607 copyLen += ZipEntry::kDataDescriptorLen;
608
609 if (copyPartialFpToFp(mZipFp, pSourceZip->mZipFp, copyLen, NULL)
610 != OK)
611 {
612 ALOGW("copy of '%s' failed\n", pEntry->mCDE.mFileName);
613 result = UNKNOWN_ERROR;
614 goto bail;
615 }
616
617 /*
618 * Update file offsets.
619 */
620 endPosn = ftell(mZipFp);
621
622 /*
623 * Success! Fill out new values.
624 */
625 pEntry->setLFHOffset(lfhPosn); // sets mCDE.mLocalHeaderRelOffset
626 mEOCD.mNumEntries++;
627 mEOCD.mTotalNumEntries++;
628 mEOCD.mCentralDirSize = 0; // mark invalid; set by flush()
629 mEOCD.mCentralDirOffset = endPosn;
630
631 /*
632 * Add pEntry to the list.
633 */
634 mEntries.add(pEntry);
635 if (ppEntry != NULL)
636 *ppEntry = pEntry;
637 pEntry = NULL;
638
639 result = OK;
640
641 bail:
642 delete pEntry;
643 return result;
644 }
645
646 /*
647 * Add an entry by copying it from another zip file, recompressing with
648 * Zopfli if already compressed.
649 *
650 * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
651 */
addRecompress(const ZipFile * pSourceZip,const ZipEntry * pSourceEntry,ZipEntry ** ppEntry)652 status_t ZipFile::addRecompress(const ZipFile* pSourceZip, const ZipEntry* pSourceEntry,
653 ZipEntry** ppEntry)
654 {
655 ZipEntry* pEntry = NULL;
656 status_t result;
657 long lfhPosn, uncompressedLen;
658
659 if (mReadOnly)
660 return INVALID_OPERATION;
661
662 /* make sure we're in a reasonable state */
663 assert(mZipFp != NULL);
664 assert(mEntries.size() == mEOCD.mTotalNumEntries);
665
666 if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
667 result = UNKNOWN_ERROR;
668 goto bail;
669 }
670
671 pEntry = new ZipEntry;
672 if (pEntry == NULL) {
673 result = NO_MEMORY;
674 goto bail;
675 }
676
677 result = pEntry->initFromExternal(pSourceEntry);
678 if (result != OK)
679 goto bail;
680
681 /*
682 * From here on out, failures are more interesting.
683 */
684 mNeedCDRewrite = true;
685
686 /*
687 * Write the LFH, even though it's still mostly blank. We need it
688 * as a place-holder. In theory the LFH isn't necessary, but in
689 * practice some utilities demand it.
690 */
691 lfhPosn = ftell(mZipFp);
692 pEntry->mLFH.write(mZipFp);
693
694 /*
695 * Copy the data over.
696 *
697 * If the "has data descriptor" flag is set, we want to copy the DD
698 * fields as well. This is a fixed-size area immediately following
699 * the data.
700 */
701 if (fseek(pSourceZip->mZipFp, pSourceEntry->getFileOffset(), SEEK_SET) != 0)
702 {
703 result = UNKNOWN_ERROR;
704 goto bail;
705 }
706
707 uncompressedLen = pSourceEntry->getUncompressedLen();
708
709 if (pSourceEntry->isCompressed()) {
710 void *buf = pSourceZip->uncompress(pSourceEntry);
711 if (buf == NULL) {
712 result = NO_MEMORY;
713 goto bail;
714 }
715 long startPosn = ftell(mZipFp);
716 uint32_t crc;
717 if (compressFpToFp(mZipFp, NULL, buf, uncompressedLen, &crc) != OK) {
718 ALOGW("recompress of '%s' failed\n", pEntry->mCDE.mFileName);
719 result = UNKNOWN_ERROR;
720 free(buf);
721 goto bail;
722 }
723 long endPosn = ftell(mZipFp);
724 pEntry->setDataInfo(uncompressedLen, endPosn - startPosn,
725 pSourceEntry->getCRC32(), ZipEntry::kCompressDeflated);
726 free(buf);
727 } else {
728 off_t copyLen;
729 copyLen = pSourceEntry->getCompressedLen();
730 if ((pSourceEntry->mLFH.mGPBitFlag & ZipEntry::kUsesDataDescr) != 0)
731 copyLen += ZipEntry::kDataDescriptorLen;
732
733 if (copyPartialFpToFp(mZipFp, pSourceZip->mZipFp, copyLen, NULL)
734 != OK)
735 {
736 ALOGW("copy of '%s' failed\n", pEntry->mCDE.mFileName);
737 result = UNKNOWN_ERROR;
738 goto bail;
739 }
740 }
741
742 /*
743 * Success! Fill out new values.
744 */
745 pEntry->setLFHOffset(lfhPosn);
746 mEOCD.mNumEntries++;
747 mEOCD.mTotalNumEntries++;
748 mEOCD.mCentralDirSize = 0; // mark invalid; set by flush()
749 mEOCD.mCentralDirOffset = ftell(mZipFp);
750
751 /*
752 * Go back and write the LFH.
753 */
754 if (fseek(mZipFp, lfhPosn, SEEK_SET) != 0) {
755 result = UNKNOWN_ERROR;
756 goto bail;
757 }
758 pEntry->mLFH.write(mZipFp);
759
760 /*
761 * Add pEntry to the list.
762 */
763 mEntries.add(pEntry);
764 if (ppEntry != NULL)
765 *ppEntry = pEntry;
766 pEntry = NULL;
767
768 result = OK;
769
770 bail:
771 delete pEntry;
772 return result;
773 }
774
775 /*
776 * Copy all of the bytes in "src" to "dst".
777 *
778 * On exit, "srcFp" will be seeked to the end of the file, and "dstFp"
779 * will be seeked immediately past the data.
780 */
copyFpToFp(FILE * dstFp,FILE * srcFp,uint32_t * pCRC32)781 status_t ZipFile::copyFpToFp(FILE* dstFp, FILE* srcFp, uint32_t* pCRC32)
782 {
783 uint8_t tmpBuf[32768];
784 size_t count;
785
786 *pCRC32 = crc32(0L, Z_NULL, 0);
787
788 while (1) {
789 count = fread(tmpBuf, 1, sizeof(tmpBuf), srcFp);
790 if (ferror(srcFp) || ferror(dstFp)) {
791 status_t status = errnoToStatus(errno);
792 ALOGW("fread %zu bytes failed, %s", count, strerror(errno));
793 return status;
794 }
795 if (count == 0)
796 break;
797
798 *pCRC32 = crc32(*pCRC32, tmpBuf, count);
799
800 if (fwrite(tmpBuf, 1, count, dstFp) != count) {
801 ALOGW("fwrite %zu bytes failed, %s", count, strerror(errno));
802 return UNKNOWN_ERROR;
803 }
804 }
805
806 return OK;
807 }
808
809 /*
810 * Copy all of the bytes in "src" to "dst".
811 *
812 * On exit, "dstFp" will be seeked immediately past the data.
813 */
copyDataToFp(FILE * dstFp,const void * data,size_t size,uint32_t * pCRC32)814 status_t ZipFile::copyDataToFp(FILE* dstFp,
815 const void* data, size_t size, uint32_t* pCRC32)
816 {
817 *pCRC32 = crc32(0L, Z_NULL, 0);
818 if (size > 0) {
819 *pCRC32 = crc32(*pCRC32, (const unsigned char*)data, size);
820 if (fwrite(data, 1, size, dstFp) != size) {
821 ALOGW("fwrite %zu bytes failed, %s", size, strerror(errno));
822 return UNKNOWN_ERROR;
823 }
824 }
825
826 return OK;
827 }
828
829 /*
830 * Copy some of the bytes in "src" to "dst".
831 *
832 * If "pCRC32" is NULL, the CRC will not be computed.
833 *
834 * On exit, "srcFp" will be seeked to the end of the file, and "dstFp"
835 * will be seeked immediately past the data just written.
836 */
copyPartialFpToFp(FILE * dstFp,FILE * srcFp,size_t length,uint32_t * pCRC32)837 status_t ZipFile::copyPartialFpToFp(FILE* dstFp, FILE* srcFp, size_t length,
838 uint32_t* pCRC32)
839 {
840 uint8_t tmpBuf[32768];
841 size_t count;
842
843 if (pCRC32 != NULL)
844 *pCRC32 = crc32(0L, Z_NULL, 0);
845
846 while (length) {
847 size_t readSize;
848
849 readSize = sizeof(tmpBuf);
850 if (readSize > length)
851 readSize = length;
852
853 count = fread(tmpBuf, 1, readSize, srcFp);
854 if (count != readSize) { // error or unexpected EOF
855 if (feof(srcFp)) {
856 ALOGW("fread %zu bytes failed, unexpected EOF", readSize);
857 } else {
858 ALOGW("fread %zu bytes failed, %s", readSize, strerror(errno));
859 }
860 return UNKNOWN_ERROR;
861 }
862
863 if (pCRC32 != NULL)
864 *pCRC32 = crc32(*pCRC32, tmpBuf, count);
865
866 if (fwrite(tmpBuf, 1, count, dstFp) != count) {
867 ALOGW("fwrite %zu bytes failed, %s", count, strerror(errno));
868 return UNKNOWN_ERROR;
869 }
870
871 length -= readSize;
872 }
873
874 return OK;
875 }
876
877 /*
878 * Compress all of the data in "srcFp" and write it to "dstFp".
879 *
880 * On exit, "srcFp" will be seeked to the end of the file, and "dstFp"
881 * will be seeked immediately past the compressed data.
882 */
compressFpToFp(FILE * dstFp,FILE * srcFp,const void * data,size_t size,uint32_t * pCRC32)883 status_t ZipFile::compressFpToFp(FILE* dstFp, FILE* srcFp,
884 const void* data, size_t size, uint32_t* pCRC32)
885 {
886 status_t result = OK;
887 const size_t kBufSize = 1024 * 1024;
888 uint8_t* inBuf = NULL;
889 uint8_t* outBuf = NULL;
890 size_t outSize = 0;
891 bool atEof = false; // no feof() aviailable yet
892 uint32_t crc;
893 ZopfliOptions options;
894 unsigned char bp = 0;
895
896 ZopfliInitOptions(&options);
897
898 crc = crc32(0L, Z_NULL, 0);
899
900 if (data) {
901 crc = crc32(crc, (const unsigned char*)data, size);
902 ZopfliDeflate(&options, 2, true, (const unsigned char*)data, size, &bp,
903 &outBuf, &outSize);
904 } else {
905 /*
906 * Create an input buffer and an output buffer.
907 */
908 inBuf = new uint8_t[kBufSize];
909 if (inBuf == NULL) {
910 result = NO_MEMORY;
911 goto bail;
912 }
913
914 /*
915 * Loop while we have data.
916 */
917 do {
918 size_t getSize;
919 getSize = fread(inBuf, 1, kBufSize, srcFp);
920 if (ferror(srcFp)) {
921 ALOGD("deflate read failed (errno=%d)\n", errno);
922 result = UNKNOWN_ERROR;
923 delete[] inBuf;
924 goto bail;
925 }
926 if (getSize < kBufSize) {
927 ALOGV("+++ got %zu bytes, EOF reached\n", getSize);
928 atEof = true;
929 }
930
931 crc = crc32(crc, inBuf, getSize);
932 ZopfliDeflate(&options, 2, atEof, inBuf, getSize, &bp, &outBuf, &outSize);
933 } while (!atEof);
934 delete[] inBuf;
935 }
936
937 ALOGV("+++ writing %zu bytes\n", outSize);
938 if (fwrite(outBuf, 1, outSize, dstFp) != outSize) {
939 ALOGW("fwrite %zu bytes failed, %s", outSize, strerror(errno));
940 result = UNKNOWN_ERROR;
941 goto bail;
942 }
943
944 *pCRC32 = crc;
945
946 bail:
947 free(outBuf);
948
949 return result;
950 }
951
952 /*
953 * Mark an entry as deleted.
954 *
955 * We will eventually need to crunch the file down, but if several files
956 * are being removed (perhaps as part of an "update" process) we can make
957 * things considerably faster by deferring the removal to "flush" time.
958 */
remove(ZipEntry * pEntry)959 status_t ZipFile::remove(ZipEntry* pEntry)
960 {
961 /*
962 * Should verify that pEntry is actually part of this archive, and
963 * not some stray ZipEntry from a different file.
964 */
965
966 /* mark entry as deleted, and mark archive as dirty */
967 pEntry->setDeleted();
968 mNeedCDRewrite = true;
969 return OK;
970 }
971
972 /*
973 * Flush any pending writes.
974 *
975 * In particular, this will crunch out deleted entries, and write the
976 * Central Directory and EOCD if we have stomped on them.
977 */
flush(void)978 status_t ZipFile::flush(void)
979 {
980 status_t result = OK;
981 long eocdPosn;
982 int i, count;
983
984 if (mReadOnly)
985 return INVALID_OPERATION;
986 if (!mNeedCDRewrite)
987 return OK;
988
989 assert(mZipFp != NULL);
990
991 result = crunchArchive();
992 if (result != OK)
993 return result;
994
995 if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0)
996 return UNKNOWN_ERROR;
997
998 count = mEntries.size();
999 for (i = 0; i < count; i++) {
1000 ZipEntry* pEntry = mEntries[i];
1001 pEntry->mCDE.write(mZipFp);
1002 }
1003
1004 eocdPosn = ftell(mZipFp);
1005 mEOCD.mCentralDirSize = eocdPosn - mEOCD.mCentralDirOffset;
1006
1007 mEOCD.write(mZipFp);
1008
1009 /*
1010 * If we had some stuff bloat up during compression and get replaced
1011 * with plain files, or if we deleted some entries, there's a lot
1012 * of wasted space at the end of the file. Remove it now.
1013 */
1014 if (ftruncate(fileno(mZipFp), ftell(mZipFp)) != 0) {
1015 ALOGW("ftruncate failed %ld: %s\n", ftell(mZipFp), strerror(errno));
1016 // not fatal
1017 }
1018
1019 /* should we clear the "newly added" flag in all entries now? */
1020
1021 mNeedCDRewrite = false;
1022 return OK;
1023 }
1024
1025 /*
1026 * Crunch deleted files out of an archive by shifting the later files down.
1027 *
1028 * Because we're not using a temp file, we do the operation inside the
1029 * current file.
1030 */
crunchArchive(void)1031 status_t ZipFile::crunchArchive(void)
1032 {
1033 status_t result = OK;
1034 int i, count;
1035 long delCount, adjust;
1036
1037 #if 0
1038 printf("CONTENTS:\n");
1039 for (i = 0; i < (int) mEntries.size(); i++) {
1040 printf(" %d: lfhOff=%ld del=%d\n",
1041 i, mEntries[i]->getLFHOffset(), mEntries[i]->getDeleted());
1042 }
1043 printf(" END is %ld\n", (long) mEOCD.mCentralDirOffset);
1044 #endif
1045
1046 /*
1047 * Roll through the set of files, shifting them as appropriate. We
1048 * could probably get a slight performance improvement by sliding
1049 * multiple files down at once (because we could use larger reads
1050 * when operating on batches of small files), but it's not that useful.
1051 */
1052 count = mEntries.size();
1053 delCount = adjust = 0;
1054 for (i = 0; i < count; i++) {
1055 ZipEntry* pEntry = mEntries[i];
1056 long span;
1057
1058 if (pEntry->getLFHOffset() != 0) {
1059 long nextOffset;
1060
1061 /* Get the length of this entry by finding the offset
1062 * of the next entry. Directory entries don't have
1063 * file offsets, so we need to find the next non-directory
1064 * entry.
1065 */
1066 nextOffset = 0;
1067 for (int ii = i+1; nextOffset == 0 && ii < count; ii++)
1068 nextOffset = mEntries[ii]->getLFHOffset();
1069 if (nextOffset == 0)
1070 nextOffset = mEOCD.mCentralDirOffset;
1071 span = nextOffset - pEntry->getLFHOffset();
1072
1073 assert(span >= ZipEntry::LocalFileHeader::kLFHLen);
1074 } else {
1075 /* This is a directory entry. It doesn't have
1076 * any actual file contents, so there's no need to
1077 * move anything.
1078 */
1079 span = 0;
1080 }
1081
1082 //printf("+++ %d: off=%ld span=%ld del=%d [count=%d]\n",
1083 // i, pEntry->getLFHOffset(), span, pEntry->getDeleted(), count);
1084
1085 if (pEntry->getDeleted()) {
1086 adjust += span;
1087 delCount++;
1088
1089 delete pEntry;
1090 mEntries.removeAt(i);
1091
1092 /* adjust loop control */
1093 count--;
1094 i--;
1095 } else if (span != 0 && adjust > 0) {
1096 /* shuffle this entry back */
1097 //printf("+++ Shuffling '%s' back %ld\n",
1098 // pEntry->getFileName(), adjust);
1099 result = filemove(mZipFp, pEntry->getLFHOffset() - adjust,
1100 pEntry->getLFHOffset(), span);
1101 if (result != OK) {
1102 /* this is why you use a temp file */
1103 ALOGE("error during crunch - archive is toast\n");
1104 return result;
1105 }
1106
1107 pEntry->setLFHOffset(pEntry->getLFHOffset() - adjust);
1108 }
1109 }
1110
1111 /*
1112 * Fix EOCD info. We have to wait until the end to do some of this
1113 * because we use mCentralDirOffset to determine "span" for the
1114 * last entry.
1115 */
1116 mEOCD.mCentralDirOffset -= adjust;
1117 mEOCD.mNumEntries -= delCount;
1118 mEOCD.mTotalNumEntries -= delCount;
1119 mEOCD.mCentralDirSize = 0; // mark invalid; set by flush()
1120
1121 assert(mEOCD.mNumEntries == mEOCD.mTotalNumEntries);
1122 assert(mEOCD.mNumEntries == count);
1123
1124 return result;
1125 }
1126
1127 /*
1128 * Works like memmove(), but on pieces of a file.
1129 */
filemove(FILE * fp,off_t dst,off_t src,size_t n)1130 status_t ZipFile::filemove(FILE* fp, off_t dst, off_t src, size_t n)
1131 {
1132 if (dst == src || n <= 0)
1133 return OK;
1134
1135 uint8_t readBuf[32768];
1136
1137 if (dst < src) {
1138 /* shift stuff toward start of file; must read from start */
1139 while (n != 0) {
1140 size_t getSize = sizeof(readBuf);
1141 if (getSize > n)
1142 getSize = n;
1143
1144 if (fseek(fp, (long) src, SEEK_SET) != 0) {
1145 ALOGW("filemove src seek %ld failed, %s",
1146 (long) src, strerror(errno));
1147 return UNKNOWN_ERROR;
1148 }
1149
1150 if (fread(readBuf, 1, getSize, fp) != getSize) {
1151 if (feof(fp)) {
1152 ALOGW("fread %zu bytes off=%ld failed, unexpected EOF",
1153 getSize, (long) src);
1154 } else {
1155 ALOGW("fread %zu bytes off=%ld failed, %s",
1156 getSize, (long) src, strerror(errno));
1157 }
1158 return UNKNOWN_ERROR;
1159 }
1160
1161 if (fseek(fp, (long) dst, SEEK_SET) != 0) {
1162 ALOGW("filemove dst seek %ld failed, %s",
1163 (long) dst, strerror(errno));
1164 return UNKNOWN_ERROR;
1165 }
1166
1167 if (fwrite(readBuf, 1, getSize, fp) != getSize) {
1168 ALOGW("filemove write %zu off=%ld failed, %s",
1169 getSize, (long) dst, strerror(errno));
1170 return UNKNOWN_ERROR;
1171 }
1172
1173 src += getSize;
1174 dst += getSize;
1175 n -= getSize;
1176 }
1177 } else {
1178 /* shift stuff toward end of file; must read from end */
1179 assert(false); // write this someday, maybe
1180 return UNKNOWN_ERROR;
1181 }
1182
1183 return OK;
1184 }
1185
1186
1187 /*
1188 * Get the modification time from a file descriptor.
1189 */
getModTime(int fd)1190 time_t ZipFile::getModTime(int fd)
1191 {
1192 struct stat sb;
1193
1194 if (fstat(fd, &sb) < 0) {
1195 ALOGD("HEY: fstat on fd %d failed\n", fd);
1196 return (time_t) -1;
1197 }
1198
1199 return sb.st_mtime;
1200 }
1201
1202
1203 #if 0 /* this is a bad idea */
1204 /*
1205 * Get a copy of the Zip file descriptor.
1206 *
1207 * We don't allow this if the file was opened read-write because we tend
1208 * to leave the file contents in an uncertain state between calls to
1209 * flush(). The duplicated file descriptor should only be valid for reads.
1210 */
1211 int ZipFile::getZipFd(void) const
1212 {
1213 if (!mReadOnly)
1214 return INVALID_OPERATION;
1215 assert(mZipFp != NULL);
1216
1217 int fd;
1218 fd = dup(fileno(mZipFp));
1219 if (fd < 0) {
1220 ALOGD("didn't work, errno=%d\n", errno);
1221 }
1222
1223 return fd;
1224 }
1225 #endif
1226
1227
1228 #if 0
1229 /*
1230 * Expand data.
1231 */
1232 bool ZipFile::uncompress(const ZipEntry* pEntry, void* buf) const
1233 {
1234 return false;
1235 }
1236 #endif
1237
1238 class BufferWriter : public zip_archive::Writer {
1239 public:
BufferWriter(void * buf,size_t size)1240 BufferWriter(void* buf, size_t size) : Writer(),
1241 buf_(reinterpret_cast<uint8_t*>(buf)), size_(size), bytes_written_(0) {}
1242
Append(uint8_t * buf,size_t buf_size)1243 bool Append(uint8_t* buf, size_t buf_size) override {
1244 if (bytes_written_ + buf_size > size_) {
1245 return false;
1246 }
1247
1248 memcpy(buf_ + bytes_written_, buf, buf_size);
1249 bytes_written_ += buf_size;
1250 return true;
1251 }
1252
1253 private:
1254 uint8_t* const buf_;
1255 const size_t size_;
1256 size_t bytes_written_;
1257 };
1258
1259 class FileReader : public zip_archive::Reader {
1260 public:
FileReader(FILE * fp)1261 FileReader(FILE* fp) : Reader(), fp_(fp), current_offset_(0) {
1262 }
1263
ReadAtOffset(uint8_t * buf,size_t len,off64_t offset) const1264 bool ReadAtOffset(uint8_t* buf, size_t len, off64_t offset) const {
1265 // Data is usually requested sequentially, so this helps avoid pointless
1266 // fseeks every time we perform a read. There's an impedence mismatch
1267 // here because the original API was designed around pread and pwrite.
1268 if (offset != current_offset_) {
1269 if (fseek(fp_, offset, SEEK_SET) != 0) {
1270 return false;
1271 }
1272
1273 current_offset_ = offset;
1274 }
1275
1276 size_t read = fread(buf, 1, len, fp_);
1277 if (read != len) {
1278 return false;
1279 }
1280
1281 current_offset_ += read;
1282 return true;
1283 }
1284
1285 private:
1286 FILE* fp_;
1287 mutable off64_t current_offset_;
1288 };
1289
1290 // free the memory when you're done
uncompress(const ZipEntry * entry) const1291 void* ZipFile::uncompress(const ZipEntry* entry) const
1292 {
1293 size_t unlen = entry->getUncompressedLen();
1294 size_t clen = entry->getCompressedLen();
1295
1296 void* buf = malloc(unlen);
1297 if (buf == NULL) {
1298 return NULL;
1299 }
1300
1301 fseek(mZipFp, 0, SEEK_SET);
1302
1303 off_t offset = entry->getFileOffset();
1304 if (fseek(mZipFp, offset, SEEK_SET) != 0) {
1305 goto bail;
1306 }
1307
1308 switch (entry->getCompressionMethod())
1309 {
1310 case ZipEntry::kCompressStored: {
1311 ssize_t amt = fread(buf, 1, unlen, mZipFp);
1312 if (amt != (ssize_t)unlen) {
1313 goto bail;
1314 }
1315 #if 0
1316 printf("data...\n");
1317 const unsigned char* p = (unsigned char*)buf;
1318 const unsigned char* end = p+unlen;
1319 for (int i=0; i<32 && p < end; i++) {
1320 printf("0x%08x ", (int)(offset+(i*0x10)));
1321 for (int j=0; j<0x10 && p < end; j++) {
1322 printf(" %02x", *p);
1323 p++;
1324 }
1325 printf("\n");
1326 }
1327 #endif
1328
1329 }
1330 break;
1331 case ZipEntry::kCompressDeflated: {
1332 const FileReader reader(mZipFp);
1333 BufferWriter writer(buf, unlen);
1334 if (zip_archive::Inflate(reader, clen, unlen, &writer, nullptr) != 0) {
1335 goto bail;
1336 }
1337 break;
1338 }
1339 default:
1340 goto bail;
1341 }
1342 return buf;
1343
1344 bail:
1345 free(buf);
1346 return NULL;
1347 }
1348
1349
1350 /*
1351 * ===========================================================================
1352 * ZipFile::EndOfCentralDir
1353 * ===========================================================================
1354 */
1355
1356 /*
1357 * Read the end-of-central-dir fields.
1358 *
1359 * "buf" should be positioned at the EOCD signature, and should contain
1360 * the entire EOCD area including the comment.
1361 */
readBuf(const uint8_t * buf,int len)1362 status_t ZipFile::EndOfCentralDir::readBuf(const uint8_t* buf, int len)
1363 {
1364 /* don't allow re-use */
1365 assert(mComment == NULL);
1366
1367 if (len < kEOCDLen) {
1368 /* looks like ZIP file got truncated */
1369 ALOGD(" Zip EOCD: expected >= %d bytes, found %d\n",
1370 kEOCDLen, len);
1371 return INVALID_OPERATION;
1372 }
1373
1374 /* this should probably be an assert() */
1375 if (ZipEntry::getLongLE(&buf[0x00]) != kSignature)
1376 return UNKNOWN_ERROR;
1377
1378 mDiskNumber = ZipEntry::getShortLE(&buf[0x04]);
1379 mDiskWithCentralDir = ZipEntry::getShortLE(&buf[0x06]);
1380 mNumEntries = ZipEntry::getShortLE(&buf[0x08]);
1381 mTotalNumEntries = ZipEntry::getShortLE(&buf[0x0a]);
1382 mCentralDirSize = ZipEntry::getLongLE(&buf[0x0c]);
1383 mCentralDirOffset = ZipEntry::getLongLE(&buf[0x10]);
1384 mCommentLen = ZipEntry::getShortLE(&buf[0x14]);
1385
1386 // TODO: validate mCentralDirOffset
1387
1388 if (mCommentLen > 0) {
1389 if (kEOCDLen + mCommentLen > len) {
1390 ALOGD("EOCD(%d) + comment(%" PRIu16 ") exceeds len (%d)\n",
1391 kEOCDLen, mCommentLen, len);
1392 return UNKNOWN_ERROR;
1393 }
1394 mComment = new uint8_t[mCommentLen];
1395 memcpy(mComment, buf + kEOCDLen, mCommentLen);
1396 }
1397
1398 return OK;
1399 }
1400
1401 /*
1402 * Write an end-of-central-directory section.
1403 */
write(FILE * fp)1404 status_t ZipFile::EndOfCentralDir::write(FILE* fp)
1405 {
1406 uint8_t buf[kEOCDLen];
1407
1408 ZipEntry::putLongLE(&buf[0x00], kSignature);
1409 ZipEntry::putShortLE(&buf[0x04], mDiskNumber);
1410 ZipEntry::putShortLE(&buf[0x06], mDiskWithCentralDir);
1411 ZipEntry::putShortLE(&buf[0x08], mNumEntries);
1412 ZipEntry::putShortLE(&buf[0x0a], mTotalNumEntries);
1413 ZipEntry::putLongLE(&buf[0x0c], mCentralDirSize);
1414 ZipEntry::putLongLE(&buf[0x10], mCentralDirOffset);
1415 ZipEntry::putShortLE(&buf[0x14], mCommentLen);
1416
1417 if (fwrite(buf, 1, kEOCDLen, fp) != kEOCDLen) {
1418 ALOGW("fwrite EOCD failed, %s", strerror(errno));
1419 return UNKNOWN_ERROR;
1420 }
1421 if (mCommentLen > 0) {
1422 assert(mComment != NULL);
1423 if (fwrite(mComment, mCommentLen, 1, fp) != mCommentLen) {
1424 ALOGW("fwrite %d bytes failed, %s",
1425 (int) mCommentLen, strerror(errno));
1426 return UNKNOWN_ERROR;
1427 }
1428 }
1429
1430 return OK;
1431 }
1432
1433 /*
1434 * Dump the contents of an EndOfCentralDir object.
1435 */
dump(void) const1436 void ZipFile::EndOfCentralDir::dump(void) const
1437 {
1438 ALOGD(" EndOfCentralDir contents:\n");
1439 ALOGD(" diskNum=%" PRIu16 " diskWCD=%" PRIu16 " numEnt=%" PRIu16 " totalNumEnt=%" PRIu16 "\n",
1440 mDiskNumber, mDiskWithCentralDir, mNumEntries, mTotalNumEntries);
1441 ALOGD(" centDirSize=%" PRIu32 " centDirOff=%" PRIu32 " commentLen=%" PRIu32 "\n",
1442 mCentralDirSize, mCentralDirOffset, mCommentLen);
1443 }
1444
1445 } // namespace android
1446