1 /*
2 * Copyright (C) 2008 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 #define LOG_TAG "ResourceType"
18 //#define LOG_NDEBUG 0
19
20 #include <ctype.h>
21 #include <memory.h>
22 #include <stddef.h>
23 #include <stdint.h>
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include <algorithm>
28 #include <fstream>
29 #include <limits>
30 #include <map>
31 #include <memory>
32 #include <set>
33 #include <type_traits>
34 #include <vector>
35
36 #include <android-base/macros.h>
37 #include <androidfw/ByteBucketArray.h>
38 #include <androidfw/ResourceTypes.h>
39 #include <androidfw/TypeWrappers.h>
40 #include <cutils/atomic.h>
41 #include <utils/ByteOrder.h>
42 #include <utils/Log.h>
43 #include <utils/String16.h>
44 #include <utils/String8.h>
45
46 #ifdef __ANDROID__
47 #include <binder/TextOutput.h>
48
49 #endif
50
51 #ifndef INT32_MAX
52 #define INT32_MAX ((int32_t)(2147483647))
53 #endif
54
55 namespace android {
56
57 #if defined(_WIN32)
58 #undef nhtol
59 #undef htonl
60 #define ntohl(x) ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
61 #define htonl(x) ntohl(x)
62 #define ntohs(x) ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
63 #define htons(x) ntohs(x)
64 #endif
65
66 #define IDMAP_MAGIC 0x504D4449
67
68 #define APP_PACKAGE_ID 0x7f
69 #define SYS_PACKAGE_ID 0x01
70
71 static const bool kDebugStringPoolNoisy = false;
72 static const bool kDebugXMLNoisy = false;
73 static const bool kDebugTableNoisy = false;
74 static const bool kDebugTableGetEntry = false;
75 static const bool kDebugTableSuperNoisy = false;
76 static const bool kDebugLoadTableNoisy = false;
77 static const bool kDebugLoadTableSuperNoisy = false;
78 static const bool kDebugTableTheme = false;
79 static const bool kDebugResXMLTree = false;
80 static const bool kDebugLibNoisy = false;
81
82 // TODO: This code uses 0xFFFFFFFF converted to bag_set* as a sentinel value. This is bad practice.
83
84 // Standard C isspace() is only required to look at the low byte of its input, so
85 // produces incorrect results for UTF-16 characters. For safety's sake, assume that
86 // any high-byte UTF-16 code point is not whitespace.
isspace16(char16_t c)87 inline int isspace16(char16_t c) {
88 return (c < 0x0080 && isspace(c));
89 }
90
91 template<typename T>
max(T a,T b)92 inline static T max(T a, T b) {
93 return a > b ? a : b;
94 }
95
96 // range checked; guaranteed to NUL-terminate within the stated number of available slots
97 // NOTE: if this truncates the dst string due to running out of space, no attempt is
98 // made to avoid splitting surrogate pairs.
strcpy16_dtoh(char16_t * dst,const uint16_t * src,size_t avail)99 static void strcpy16_dtoh(char16_t* dst, const uint16_t* src, size_t avail)
100 {
101 char16_t* last = dst + avail - 1;
102 while (*src && (dst < last)) {
103 char16_t s = dtohs(static_cast<char16_t>(*src));
104 *dst++ = s;
105 src++;
106 }
107 *dst = 0;
108 }
109
validate_chunk(const incfs::map_ptr<ResChunk_header> & chunk,size_t minSize,const incfs::map_ptr<uint8_t> dataEnd,const char * name)110 static status_t validate_chunk(const incfs::map_ptr<ResChunk_header>& chunk,
111 size_t minSize,
112 const incfs::map_ptr<uint8_t> dataEnd,
113 const char* name)
114 {
115 if (!chunk) {
116 return BAD_TYPE;
117 }
118
119 const uint16_t headerSize = dtohs(chunk->headerSize);
120 const uint32_t size = dtohl(chunk->size);
121
122 if (headerSize >= minSize) {
123 if (headerSize <= size) {
124 if (((headerSize|size)&0x3) == 0) {
125 if ((size_t)size <= (size_t)(dataEnd-chunk.convert<uint8_t>())) {
126 return NO_ERROR;
127 }
128 ALOGW("%s data size 0x%x extends beyond resource end %p.",
129 name, size, (void*)(dataEnd-chunk.convert<uint8_t>()));
130 return BAD_TYPE;
131 }
132 ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
133 name, (int)size, (int)headerSize);
134 return BAD_TYPE;
135 }
136 ALOGW("%s size 0x%x is smaller than header size 0x%x.",
137 name, size, headerSize);
138 return BAD_TYPE;
139 }
140 ALOGW("%s header size 0x%04x is too small.",
141 name, headerSize);
142 return BAD_TYPE;
143 }
144
fill9patchOffsets(Res_png_9patch * patch)145 static void fill9patchOffsets(Res_png_9patch* patch) {
146 patch->xDivsOffset = sizeof(Res_png_9patch);
147 patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
148 patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
149 }
150
copyFrom_dtoh(const Res_value & src)151 void Res_value::copyFrom_dtoh(const Res_value& src)
152 {
153 size = dtohs(src.size);
154 res0 = src.res0;
155 dataType = src.dataType;
156 data = dtohl(src.data);
157 }
158
deviceToFile()159 void Res_png_9patch::deviceToFile()
160 {
161 int32_t* xDivs = getXDivs();
162 for (int i = 0; i < numXDivs; i++) {
163 xDivs[i] = htonl(xDivs[i]);
164 }
165 int32_t* yDivs = getYDivs();
166 for (int i = 0; i < numYDivs; i++) {
167 yDivs[i] = htonl(yDivs[i]);
168 }
169 paddingLeft = htonl(paddingLeft);
170 paddingRight = htonl(paddingRight);
171 paddingTop = htonl(paddingTop);
172 paddingBottom = htonl(paddingBottom);
173 uint32_t* colors = getColors();
174 for (int i=0; i<numColors; i++) {
175 colors[i] = htonl(colors[i]);
176 }
177 }
178
fileToDevice()179 void Res_png_9patch::fileToDevice()
180 {
181 int32_t* xDivs = getXDivs();
182 for (int i = 0; i < numXDivs; i++) {
183 xDivs[i] = ntohl(xDivs[i]);
184 }
185 int32_t* yDivs = getYDivs();
186 for (int i = 0; i < numYDivs; i++) {
187 yDivs[i] = ntohl(yDivs[i]);
188 }
189 paddingLeft = ntohl(paddingLeft);
190 paddingRight = ntohl(paddingRight);
191 paddingTop = ntohl(paddingTop);
192 paddingBottom = ntohl(paddingBottom);
193 uint32_t* colors = getColors();
194 for (int i=0; i<numColors; i++) {
195 colors[i] = ntohl(colors[i]);
196 }
197 }
198
serializedSize() const199 size_t Res_png_9patch::serializedSize() const
200 {
201 // The size of this struct is 32 bytes on the 32-bit target system
202 // 4 * int8_t
203 // 4 * int32_t
204 // 3 * uint32_t
205 return 32
206 + numXDivs * sizeof(int32_t)
207 + numYDivs * sizeof(int32_t)
208 + numColors * sizeof(uint32_t);
209 }
210
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors)211 void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
212 const int32_t* yDivs, const uint32_t* colors)
213 {
214 // Use calloc since we're going to leave a few holes in the data
215 // and want this to run cleanly under valgrind
216 void* newData = calloc(1, patch.serializedSize());
217 serialize(patch, xDivs, yDivs, colors, newData);
218 return newData;
219 }
220
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors,void * outData)221 void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
222 const int32_t* yDivs, const uint32_t* colors, void* outData)
223 {
224 uint8_t* data = (uint8_t*) outData;
225 memcpy(data, &patch.wasDeserialized, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
226 memcpy(data + 12, &patch.paddingLeft, 16); // copy paddingXXXX
227 data += 32;
228
229 memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
230 data += patch.numXDivs * sizeof(int32_t);
231 memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
232 data += patch.numYDivs * sizeof(int32_t);
233 memcpy(data, colors, patch.numColors * sizeof(uint32_t));
234
235 fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
236 }
237
IsFabricatedOverlay(const std::string & path)238 bool IsFabricatedOverlay(const std::string& path) {
239 std::ifstream fin(path);
240 uint32_t magic;
241 if (fin.read(reinterpret_cast<char*>(&magic), sizeof(uint32_t))) {
242 return magic == kFabricatedOverlayMagic;
243 }
244 return false;
245 }
246
assertIdmapHeader(const void * idmap,size_t size)247 static bool assertIdmapHeader(const void* idmap, size_t size) {
248 if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
249 ALOGE("idmap: header is not word aligned");
250 return false;
251 }
252
253 if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
254 ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
255 return false;
256 }
257
258 const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
259 if (magic != IDMAP_MAGIC) {
260 ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
261 magic, IDMAP_MAGIC);
262 return false;
263 }
264
265 const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
266 if (version != ResTable::IDMAP_CURRENT_VERSION) {
267 // We are strict about versions because files with this format are
268 // auto-generated and don't need backwards compatibility.
269 ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
270 version, ResTable::IDMAP_CURRENT_VERSION);
271 return false;
272 }
273 return true;
274 }
275
276 class IdmapEntries {
277 public:
IdmapEntries()278 IdmapEntries() : mData(NULL) {}
279
hasEntries() const280 bool hasEntries() const {
281 if (mData == NULL) {
282 return false;
283 }
284
285 return (dtohs(*mData) > 0);
286 }
287
byteSize() const288 size_t byteSize() const {
289 if (mData == NULL) {
290 return 0;
291 }
292 uint16_t entryCount = dtohs(mData[2]);
293 return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
294 }
295
targetTypeId() const296 uint8_t targetTypeId() const {
297 if (mData == NULL) {
298 return 0;
299 }
300 return dtohs(mData[0]);
301 }
302
overlayTypeId() const303 uint8_t overlayTypeId() const {
304 if (mData == NULL) {
305 return 0;
306 }
307 return dtohs(mData[1]);
308 }
309
setTo(const void * entryHeader,size_t size)310 status_t setTo(const void* entryHeader, size_t size) {
311 if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
312 ALOGE("idmap: entry header is not word aligned");
313 return UNKNOWN_ERROR;
314 }
315
316 if (size < sizeof(uint16_t) * 4) {
317 ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
318 return UNKNOWN_ERROR;
319 }
320
321 const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
322 const uint16_t targetTypeId = dtohs(header[0]);
323 const uint16_t overlayTypeId = dtohs(header[1]);
324 if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
325 ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
326 return UNKNOWN_ERROR;
327 }
328
329 uint16_t entryCount = dtohs(header[2]);
330 if (size < sizeof(uint32_t) * (entryCount + 2)) {
331 ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
332 (uint32_t) size, (uint32_t) entryCount);
333 return UNKNOWN_ERROR;
334 }
335 mData = header;
336 return NO_ERROR;
337 }
338
lookup(uint16_t entryId,uint16_t * outEntryId) const339 status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
340 uint16_t entryCount = dtohs(mData[2]);
341 uint16_t offset = dtohs(mData[3]);
342
343 if (entryId < offset) {
344 // The entry is not present in this idmap
345 return BAD_INDEX;
346 }
347
348 entryId -= offset;
349
350 if (entryId >= entryCount) {
351 // The entry is not present in this idmap
352 return BAD_INDEX;
353 }
354
355 // It is safe to access the type here without checking the size because
356 // we have checked this when it was first loaded.
357 const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
358 uint32_t mappedEntry = dtohl(entries[entryId]);
359 if (mappedEntry == 0xffffffff) {
360 // This entry is not present in this idmap
361 return BAD_INDEX;
362 }
363 *outEntryId = static_cast<uint16_t>(mappedEntry);
364 return NO_ERROR;
365 }
366
367 private:
368 const uint16_t* mData;
369 };
370
parseIdmap(const void * idmap,size_t size,uint8_t * outPackageId,KeyedVector<uint8_t,IdmapEntries> * outMap)371 status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
372 if (!assertIdmapHeader(idmap, size)) {
373 return UNKNOWN_ERROR;
374 }
375
376 size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
377 if (size < sizeof(uint16_t) * 2) {
378 ALOGE("idmap: too small to contain any mapping");
379 return UNKNOWN_ERROR;
380 }
381
382 const uint16_t* data = reinterpret_cast<const uint16_t*>(
383 reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
384
385 uint16_t targetPackageId = dtohs(*(data++));
386 if (targetPackageId == 0 || targetPackageId > 255) {
387 ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
388 return UNKNOWN_ERROR;
389 }
390
391 uint16_t mapCount = dtohs(*(data++));
392 if (mapCount == 0) {
393 ALOGE("idmap: no mappings");
394 return UNKNOWN_ERROR;
395 }
396
397 if (mapCount > 255) {
398 ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
399 }
400
401 while (size > sizeof(uint16_t) * 4) {
402 IdmapEntries entries;
403 status_t err = entries.setTo(data, size);
404 if (err != NO_ERROR) {
405 return err;
406 }
407
408 ssize_t index = outMap->add(entries.overlayTypeId(), entries);
409 if (index < 0) {
410 return NO_MEMORY;
411 }
412
413 data += entries.byteSize() / sizeof(uint16_t);
414 size -= entries.byteSize();
415 }
416
417 if (outPackageId != NULL) {
418 *outPackageId = static_cast<uint8_t>(targetPackageId);
419 }
420 return NO_ERROR;
421 }
422
deserialize(void * inData)423 Res_png_9patch* Res_png_9patch::deserialize(void* inData)
424 {
425
426 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
427 patch->wasDeserialized = true;
428 fill9patchOffsets(patch);
429
430 return patch;
431 }
432
433 // --------------------------------------------------------------------
434 // --------------------------------------------------------------------
435 // --------------------------------------------------------------------
436
ResStringPool()437 ResStringPool::ResStringPool()
438 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
439 {
440 }
441
ResStringPool(const void * data,size_t size,bool copyData)442 ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
443 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
444 {
445 setTo(data, size, copyData);
446 }
447
~ResStringPool()448 ResStringPool::~ResStringPool()
449 {
450 uninit();
451 }
452
setToEmpty()453 void ResStringPool::setToEmpty()
454 {
455 uninit();
456
457 mOwnedData = calloc(1, sizeof(ResStringPool_header));
458 ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
459 mSize = 0;
460 mEntries = NULL;
461 mStrings = NULL;
462 mStringPoolSize = 0;
463 mEntryStyles = NULL;
464 mStyles = NULL;
465 mStylePoolSize = 0;
466 mHeader = (const ResStringPool_header*) header;
467 }
468
setTo(incfs::map_ptr<void> data,size_t size,bool copyData)469 status_t ResStringPool::setTo(incfs::map_ptr<void> data, size_t size, bool copyData)
470 {
471 if (!data || !size) {
472 return (mError=BAD_TYPE);
473 }
474
475 uninit();
476
477 // The chunk must be at least the size of the string pool header.
478 if (size < sizeof(ResStringPool_header)) {
479 ALOGW("Bad string block: data size %zu is too small to be a string block", size);
480 return (mError=BAD_TYPE);
481 }
482
483 // The data is at least as big as a ResChunk_header, so we can safely validate the other
484 // header fields.
485 // `data + size` is safe because the source of `size` comes from the kernel/filesystem.
486 const auto chunk_header = data.convert<ResChunk_header>();
487 if (validate_chunk(chunk_header, sizeof(ResStringPool_header), data.convert<uint8_t>() + size,
488 "ResStringPool_header") != NO_ERROR) {
489 ALOGW("Bad string block: malformed block dimensions");
490 return (mError=BAD_TYPE);
491 }
492
493 const bool notDeviceEndian = htods(0xf0) != 0xf0;
494
495 if (copyData || notDeviceEndian) {
496 mOwnedData = malloc(size);
497 if (mOwnedData == NULL) {
498 return (mError=NO_MEMORY);
499 }
500
501 if (!data.convert<uint8_t>().verify(size)) {
502 return (mError=NO_MEMORY);
503 }
504
505 memcpy(mOwnedData, data.unsafe_ptr(), size);
506 data = mOwnedData;
507 }
508
509 // The size has been checked, so it is safe to read the data in the ResStringPool_header
510 // data structure.
511 const auto header = data.convert<ResStringPool_header>();
512 if (!header) {
513 return (mError=BAD_TYPE);
514 }
515
516 mHeader = header.verified();
517 if (notDeviceEndian) {
518 ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader.unsafe_ptr());
519 h->header.headerSize = dtohs(mHeader->header.headerSize);
520 h->header.type = dtohs(mHeader->header.type);
521 h->header.size = dtohl(mHeader->header.size);
522 h->stringCount = dtohl(mHeader->stringCount);
523 h->styleCount = dtohl(mHeader->styleCount);
524 h->flags = dtohl(mHeader->flags);
525 h->stringsStart = dtohl(mHeader->stringsStart);
526 h->stylesStart = dtohl(mHeader->stylesStart);
527 }
528
529 if (mHeader->header.headerSize > mHeader->header.size
530 || mHeader->header.size > size) {
531 ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
532 (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
533 return (mError=BAD_TYPE);
534 }
535 mSize = mHeader->header.size;
536 mEntries = data.offset(mHeader->header.headerSize).convert<uint32_t>();
537
538 if (mHeader->stringCount > 0) {
539 if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount) // uint32 overflow?
540 || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
541 > size) {
542 ALOGW("Bad string block: entry of %d items extends past data size %d\n",
543 (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
544 (int)size);
545 return (mError=BAD_TYPE);
546 }
547
548 size_t charSize;
549 if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
550 charSize = sizeof(uint8_t);
551 } else {
552 charSize = sizeof(uint16_t);
553 }
554
555 // There should be at least space for the smallest string
556 // (2 bytes length, null terminator).
557 if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
558 ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
559 (int)mHeader->stringsStart, (int)mHeader->header.size);
560 return (mError=BAD_TYPE);
561 }
562
563 mStrings = data.offset(mHeader->stringsStart).convert<void>();
564 if (mHeader->styleCount == 0) {
565 mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
566 } else {
567 // check invariant: styles starts before end of data
568 if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
569 ALOGW("Bad style block: style block starts at %d past data size of %d\n",
570 (int)mHeader->stylesStart, (int)mHeader->header.size);
571 return (mError=BAD_TYPE);
572 }
573 // check invariant: styles follow the strings
574 if (mHeader->stylesStart <= mHeader->stringsStart) {
575 ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
576 (int)mHeader->stylesStart, (int)mHeader->stringsStart);
577 return (mError=BAD_TYPE);
578 }
579 mStringPoolSize =
580 (mHeader->stylesStart-mHeader->stringsStart)/charSize;
581 }
582
583 // check invariant: stringCount > 0 requires a string pool to exist
584 if (mStringPoolSize == 0) {
585 ALOGW("Bad string block: stringCount is %d but pool size is 0\n",
586 (int)mHeader->stringCount);
587 return (mError=BAD_TYPE);
588 }
589
590 if (notDeviceEndian) {
591 size_t i;
592 auto e = const_cast<uint32_t*>(mEntries.unsafe_ptr());
593 for (i=0; i<mHeader->stringCount; i++) {
594 e[i] = dtohl(e[i]);
595 }
596 if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
597 uint16_t* s = const_cast<uint16_t*>(mStrings.convert<uint16_t>().unsafe_ptr());
598 for (i=0; i<mStringPoolSize; i++) {
599 s[i] = dtohs(s[i]);
600 }
601 }
602 }
603
604 if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
605 auto end = mStrings.convert<uint8_t>() + (mStringPoolSize-1);
606 if (!end || end.value() != 0) {
607 ALOGW("Bad string block: last string is not 0-terminated\n");
608 return (mError=BAD_TYPE);
609 }
610 } else {
611 auto end = mStrings.convert<uint16_t>() + (mStringPoolSize-1);
612 if (!end || end.value() != 0) {
613 ALOGW("Bad string block: last string is not 0-terminated\n");
614 return (mError=BAD_TYPE);
615 }
616 }
617 } else {
618 mStrings = NULL;
619 mStringPoolSize = 0;
620 }
621
622 if (mHeader->styleCount > 0) {
623 mEntryStyles = mEntries + mHeader->stringCount;
624 // invariant: integer overflow in calculating mEntryStyles
625 if (mEntryStyles < mEntries) {
626 ALOGW("Bad string block: integer overflow finding styles\n");
627 return (mError=BAD_TYPE);
628 }
629
630 if ((mEntryStyles.convert<uint8_t>() - mHeader.convert<uint8_t>()) > (int)size) {
631 ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
632 (int)(mEntryStyles.convert<uint8_t>()-mHeader.convert<uint8_t>()),
633 (int)size);
634 return (mError=BAD_TYPE);
635 }
636 mStyles = data.offset(mHeader->stylesStart).convert<uint32_t>();
637 if (mHeader->stylesStart >= mHeader->header.size) {
638 ALOGW("Bad string block: style pool starts %d, after total size %d\n",
639 (int)mHeader->stylesStart, (int)mHeader->header.size);
640 return (mError=BAD_TYPE);
641 }
642 mStylePoolSize =
643 (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
644
645 if (notDeviceEndian) {
646 size_t i;
647 uint32_t* e = const_cast<uint32_t*>(mEntryStyles.unsafe_ptr());
648 for (i=0; i<mHeader->styleCount; i++) {
649 e[i] = dtohl(e[i]);
650 }
651 uint32_t* s = const_cast<uint32_t*>(mStyles.unsafe_ptr());
652 for (i=0; i<mStylePoolSize; i++) {
653 s[i] = dtohl(s[i]);
654 }
655 }
656
657 const ResStringPool_span endSpan = {
658 { htodl(ResStringPool_span::END) },
659 htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
660 };
661
662 auto stylesEnd = mStyles + (mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t)));
663 if (!stylesEnd || memcmp(stylesEnd.unsafe_ptr(), &endSpan, sizeof(endSpan)) != 0) {
664 ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
665 return (mError=BAD_TYPE);
666 }
667 } else {
668 mEntryStyles = NULL;
669 mStyles = NULL;
670 mStylePoolSize = 0;
671 }
672
673 return (mError=NO_ERROR);
674 }
675
getError() const676 status_t ResStringPool::getError() const
677 {
678 return mError;
679 }
680
uninit()681 void ResStringPool::uninit()
682 {
683 mError = NO_INIT;
684 if (mHeader && mCache != NULL) {
685 for (size_t x = 0; x < mHeader->stringCount; x++) {
686 if (mCache[x] != NULL) {
687 free(mCache[x]);
688 mCache[x] = NULL;
689 }
690 }
691 free(mCache);
692 mCache = NULL;
693 }
694 if (mOwnedData) {
695 free(mOwnedData);
696 mOwnedData = NULL;
697 }
698 }
699
700 /**
701 * Strings in UTF-16 format have length indicated by a length encoded in the
702 * stored data. It is either 1 or 2 characters of length data. This allows a
703 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
704 * much data in a string, you're abusing them.
705 *
706 * If the high bit is set, then there are two characters or 4 bytes of length
707 * data encoded. In that case, drop the high bit of the first character and
708 * add it together with the next character.
709 */
decodeLength(incfs::map_ptr<uint16_t> * str)710 static inline base::expected<size_t, IOError> decodeLength(incfs::map_ptr<uint16_t>* str)
711 {
712 if (UNLIKELY(!*str)) {
713 return base::unexpected(IOError::PAGES_MISSING);
714 }
715
716 size_t len = str->value();
717 if ((len & 0x8000U) != 0) {
718 ++(*str);
719 if (UNLIKELY(!*str)) {
720 return base::unexpected(IOError::PAGES_MISSING);
721 }
722 len = ((len & 0x7FFFU) << 16U) | str->value();
723 }
724 ++(*str);
725 return len;
726 }
727
728 /**
729 * Strings in UTF-8 format have length indicated by a length encoded in the
730 * stored data. It is either 1 or 2 characters of length data. This allows a
731 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
732 * text in another way if you're using that much data in a single string.
733 *
734 * If the high bit is set, then there are two characters or 2 bytes of length
735 * data encoded. In that case, drop the high bit of the first character and
736 * add it together with the next character.
737 */
decodeLength(incfs::map_ptr<uint8_t> * str)738 static inline base::expected<size_t, IOError> decodeLength(incfs::map_ptr<uint8_t>* str)
739 {
740 if (UNLIKELY(!*str)) {
741 return base::unexpected(IOError::PAGES_MISSING);
742 }
743
744 size_t len = str->value();
745 if ((len & 0x80U) != 0) {
746 ++(*str);
747 if (UNLIKELY(!*str)) {
748 return base::unexpected(IOError::PAGES_MISSING);
749 }
750 len = ((len & 0x7FU) << 8U) | str->value();
751 }
752 ++(*str);
753 return len;
754 }
755
stringAt(size_t idx) const756 base::expected<StringPiece16, NullOrIOError> ResStringPool::stringAt(size_t idx) const
757 {
758 if (mError == NO_ERROR && idx < mHeader->stringCount) {
759 const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
760 auto offPtr = mEntries + idx;
761 if (UNLIKELY(!offPtr)) {
762 return base::unexpected(IOError::PAGES_MISSING);
763 }
764
765 const uint32_t off = (offPtr.value())/(isUTF8?sizeof(uint8_t):sizeof(uint16_t));
766 if (off < (mStringPoolSize-1)) {
767 if (!isUTF8) {
768 auto strings = mStrings.convert<uint16_t>();
769 auto str = strings+off;
770
771 const base::expected<size_t, IOError> u16len = decodeLength(&str);
772 if (UNLIKELY(!u16len.has_value())) {
773 return base::unexpected(u16len.error());
774 }
775
776 if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
777 // Reject malformed (non null-terminated) strings
778 const auto nullAddress = str + (*u16len);
779 if (UNLIKELY(!nullAddress)) {
780 return base::unexpected(IOError::PAGES_MISSING);
781 }
782
783 if (nullAddress.value() != 0x0000) {
784 ALOGW("Bad string block: string #%d is not null-terminated", (int)idx);
785 return base::unexpected(std::nullopt);
786 }
787
788 if (UNLIKELY(!str.verify(*u16len + 1U))) {
789 return base::unexpected(IOError::PAGES_MISSING);
790 }
791
792 return StringPiece16(reinterpret_cast<const char16_t*>(str.unsafe_ptr()),
793 *u16len);
794 } else {
795 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
796 (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
797 }
798 } else {
799 auto strings = mStrings.convert<uint8_t>();
800 auto u8str = strings+off;
801
802 base::expected<size_t, IOError> u16len = decodeLength(&u8str);
803 if (UNLIKELY(!u16len.has_value())) {
804 return base::unexpected(u16len.error());
805 }
806
807 const base::expected<size_t, IOError> u8len = decodeLength(&u8str);
808 if (UNLIKELY(!u8len.has_value())) {
809 return base::unexpected(u8len.error());
810 }
811
812 // encLen must be less than 0x7FFF due to encoding.
813 if ((uint32_t)(u8str+*u8len-strings) < mStringPoolSize) {
814 AutoMutex lock(mDecodeLock);
815
816 if (mCache != NULL && mCache[idx] != NULL) {
817 return StringPiece16(mCache[idx], *u16len);
818 }
819
820 // Retrieve the actual length of the utf8 string if the
821 // encoded length was truncated
822 auto decodedString = stringDecodeAt(idx, u8str, *u8len);
823 if (!decodedString.has_value()) {
824 return base::unexpected(decodedString.error());
825 }
826
827 // Since AAPT truncated lengths longer than 0x7FFF, check
828 // that the bits that remain after truncation at least match
829 // the bits of the actual length
830 ssize_t actualLen = utf8_to_utf16_length(
831 reinterpret_cast<const uint8_t*>(decodedString->data()),
832 decodedString->size());
833
834 if (actualLen < 0 || ((size_t)actualLen & 0x7FFFU) != *u16len) {
835 ALOGW("Bad string block: string #%lld decoded length is not correct "
836 "%lld vs %llu\n",
837 (long long)idx, (long long)actualLen, (long long)*u16len);
838 return base::unexpected(std::nullopt);
839 }
840
841 u16len = (size_t) actualLen;
842 auto u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
843 if (!u16str) {
844 ALOGW("No memory when trying to allocate decode cache for string #%d\n",
845 (int)idx);
846 return base::unexpected(std::nullopt);
847 }
848
849 utf8_to_utf16(reinterpret_cast<const uint8_t*>(decodedString->data()),
850 decodedString->size(), u16str, *u16len + 1);
851
852 if (mCache == NULL) {
853 #ifndef __ANDROID__
854 if (kDebugStringPoolNoisy) {
855 ALOGI("CREATING STRING CACHE OF %zu bytes",
856 mHeader->stringCount*sizeof(char16_t**));
857 }
858 #else
859 // We do not want to be in this case when actually running Android.
860 ALOGW("CREATING STRING CACHE OF %zu bytes",
861 static_cast<size_t>(mHeader->stringCount*sizeof(char16_t**)));
862 #endif
863 mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t*));
864 if (mCache == NULL) {
865 ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
866 (int)(mHeader->stringCount*sizeof(char16_t**)));
867 return base::unexpected(std::nullopt);
868 }
869 }
870
871 if (kDebugStringPoolNoisy) {
872 ALOGI("Caching UTF8 string: %s", u8str.unsafe_ptr());
873 }
874
875 mCache[idx] = u16str;
876 return StringPiece16(u16str, *u16len);
877 } else {
878 ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
879 (long long)idx, (long long)(u8str+*u8len-strings),
880 (long long)mStringPoolSize);
881 }
882 }
883 } else {
884 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
885 (int)idx, (int)(off*sizeof(uint16_t)),
886 (int)(mStringPoolSize*sizeof(uint16_t)));
887 }
888 }
889 return base::unexpected(std::nullopt);
890 }
891
string8At(size_t idx) const892 base::expected<StringPiece, NullOrIOError> ResStringPool::string8At(size_t idx) const
893 {
894 if (mError == NO_ERROR && idx < mHeader->stringCount) {
895 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
896 return base::unexpected(std::nullopt);
897 }
898
899 auto offPtr = mEntries + idx;
900 if (UNLIKELY(!offPtr)) {
901 return base::unexpected(IOError::PAGES_MISSING);
902 }
903
904 const uint32_t off = (offPtr.value())/sizeof(char);
905 if (off < (mStringPoolSize-1)) {
906 auto strings = mStrings.convert<uint8_t>();
907 auto str = strings+off;
908
909 // Decode the UTF-16 length. This is not used if we're not
910 // converting to UTF-16 from UTF-8.
911 const base::expected<size_t, IOError> u16len = decodeLength(&str);
912 if (UNLIKELY(!u16len.has_value())) {
913 return base::unexpected(u16len.error());
914 }
915
916 const base::expected<size_t, IOError> u8len = decodeLength(&str);
917 if (UNLIKELY(!u8len.has_value())) {
918 return base::unexpected(u8len.error());
919 }
920
921 if ((uint32_t)(str+*u8len-strings) < mStringPoolSize) {
922 return stringDecodeAt(idx, str, *u8len);
923 } else {
924 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
925 (int)idx, (int)(str+*u8len-strings), (int)mStringPoolSize);
926 }
927 } else {
928 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
929 (int)idx, (int)(off*sizeof(uint16_t)),
930 (int)(mStringPoolSize*sizeof(uint16_t)));
931 }
932 }
933 return base::unexpected(std::nullopt);
934 }
935
936 /**
937 * AAPT incorrectly writes a truncated string length when the string size
938 * exceeded the maximum possible encode length value (0x7FFF). To decode a
939 * truncated length, iterate through length values that end in the encode length
940 * bits. Strings that exceed the maximum encode length are not placed into
941 * StringPools in AAPT2.
942 **/
stringDecodeAt(size_t idx,incfs::map_ptr<uint8_t> str,size_t encLen) const943 base::expected<StringPiece, NullOrIOError> ResStringPool::stringDecodeAt(
944 size_t idx, incfs::map_ptr<uint8_t> str, size_t encLen) const
945 {
946 const auto strings = mStrings.convert<uint8_t>();
947 size_t i = 0, end = encLen;
948 while ((uint32_t)(str+end-strings) < mStringPoolSize) {
949 const auto nullAddress = str + end;
950 if (UNLIKELY(!nullAddress)) {
951 return base::unexpected(IOError::PAGES_MISSING);
952 }
953
954 if (nullAddress.value() == 0x00) {
955 if (i != 0) {
956 ALOGW("Bad string block: string #%d is truncated (actual length is %d)",
957 (int)idx, (int)end);
958 }
959
960 if (UNLIKELY(!str.verify(end + 1U))) {
961 return base::unexpected(IOError::PAGES_MISSING);
962 }
963
964 return StringPiece((const char*) str.unsafe_ptr(), end);
965 }
966
967 end = (++i << (sizeof(uint8_t) * 8 * 2 - 1)) | encLen;
968 }
969
970 // Reject malformed (non null-terminated) strings
971 ALOGW("Bad string block: string #%d is not null-terminated", (int)idx);
972 return base::unexpected(std::nullopt);
973 }
974
string8ObjectAt(size_t idx) const975 base::expected<String8, IOError> ResStringPool::string8ObjectAt(size_t idx) const
976 {
977 const base::expected<StringPiece, NullOrIOError> str = string8At(idx);
978 if (UNLIKELY(IsIOError(str))) {
979 return base::unexpected(GetIOError(str.error()));
980 }
981 if (str.has_value()) {
982 return String8(str->data(), str->size());
983 }
984
985 const base::expected<StringPiece16, NullOrIOError> str16 = stringAt(idx);
986 if (UNLIKELY(IsIOError(str16))) {
987 return base::unexpected(GetIOError(str16.error()));
988 }
989 if (str16.has_value()) {
990 return String8(str16->data(), str16->size());
991 }
992
993 return String8();
994 }
995
styleAt(const ResStringPool_ref & ref) const996 base::expected<incfs::map_ptr<ResStringPool_span>, NullOrIOError> ResStringPool::styleAt(
997 const ResStringPool_ref& ref) const
998 {
999 return styleAt(ref.index);
1000 }
1001
styleAt(size_t idx) const1002 base::expected<incfs::map_ptr<ResStringPool_span>, NullOrIOError> ResStringPool::styleAt(
1003 size_t idx) const
1004 {
1005 if (mError == NO_ERROR && idx < mHeader->styleCount) {
1006 auto offPtr = mEntryStyles + idx;
1007 if (UNLIKELY(!offPtr)) {
1008 return base::unexpected(IOError::PAGES_MISSING);
1009 }
1010
1011 const uint32_t off = ((offPtr.value())/sizeof(uint32_t));
1012 if (off < mStylePoolSize) {
1013 return (mStyles+off).convert<ResStringPool_span>();
1014 } else {
1015 ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
1016 (int)idx, (int)(off*sizeof(uint32_t)),
1017 (int)(mStylePoolSize*sizeof(uint32_t)));
1018 }
1019 }
1020 return base::unexpected(std::nullopt);
1021 }
1022
indexOfString(const char16_t * str,size_t strLen) const1023 base::expected<size_t, NullOrIOError> ResStringPool::indexOfString(const char16_t* str,
1024 size_t strLen) const
1025 {
1026 if (mError != NO_ERROR) {
1027 return base::unexpected(std::nullopt);
1028 }
1029
1030 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
1031 if (kDebugStringPoolNoisy) {
1032 ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string());
1033 }
1034
1035 // The string pool contains UTF 8 strings; we don't want to cause
1036 // temporary UTF-16 strings to be created as we search.
1037 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
1038 // Do a binary search for the string... this is a little tricky,
1039 // because the strings are sorted with strzcmp16(). So to match
1040 // the ordering, we need to convert strings in the pool to UTF-16.
1041 // But we don't want to hit the cache, so instead we will have a
1042 // local temporary allocation for the conversions.
1043 size_t convBufferLen = strLen + 4;
1044 std::vector<char16_t> convBuffer(convBufferLen);
1045 ssize_t l = 0;
1046 ssize_t h = mHeader->stringCount-1;
1047
1048 ssize_t mid;
1049 while (l <= h) {
1050 mid = l + (h - l)/2;
1051 int c = -1;
1052 const base::expected<StringPiece, NullOrIOError> s = string8At(mid);
1053 if (UNLIKELY(IsIOError(s))) {
1054 return base::unexpected(s.error());
1055 }
1056 if (s.has_value()) {
1057 char16_t* end = utf8_to_utf16(reinterpret_cast<const uint8_t*>(s->data()),
1058 s->size(), convBuffer.data(), convBufferLen);
1059 c = strzcmp16(convBuffer.data(), end-convBuffer.data(), str, strLen);
1060 }
1061 if (kDebugStringPoolNoisy) {
1062 ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
1063 s->data(), c, (int)l, (int)mid, (int)h);
1064 }
1065 if (c == 0) {
1066 if (kDebugStringPoolNoisy) {
1067 ALOGI("MATCH!");
1068 }
1069 return mid;
1070 } else if (c < 0) {
1071 l = mid + 1;
1072 } else {
1073 h = mid - 1;
1074 }
1075 }
1076 } else {
1077 // It is unusual to get the ID from an unsorted string block...
1078 // most often this happens because we want to get IDs for style
1079 // span tags; since those always appear at the end of the string
1080 // block, start searching at the back.
1081 String8 str8(str, strLen);
1082 const size_t str8Len = str8.size();
1083 for (int i=mHeader->stringCount-1; i>=0; i--) {
1084 const base::expected<StringPiece, NullOrIOError> s = string8At(i);
1085 if (UNLIKELY(IsIOError(s))) {
1086 return base::unexpected(s.error());
1087 }
1088 if (s.has_value()) {
1089 if (kDebugStringPoolNoisy) {
1090 ALOGI("Looking at %s, i=%d\n", s->data(), i);
1091 }
1092 if (str8Len == s->size()
1093 && memcmp(s->data(), str8.string(), str8Len) == 0) {
1094 if (kDebugStringPoolNoisy) {
1095 ALOGI("MATCH!");
1096 }
1097 return i;
1098 }
1099 }
1100 }
1101 }
1102
1103 } else {
1104 if (kDebugStringPoolNoisy) {
1105 ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string());
1106 }
1107
1108 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
1109 // Do a binary search for the string...
1110 ssize_t l = 0;
1111 ssize_t h = mHeader->stringCount-1;
1112
1113 ssize_t mid;
1114 while (l <= h) {
1115 mid = l + (h - l)/2;
1116 const base::expected<StringPiece16, NullOrIOError> s = stringAt(mid);
1117 if (UNLIKELY(IsIOError(s))) {
1118 return base::unexpected(s.error());
1119 }
1120 int c = s.has_value() ? strzcmp16(s->data(), s->size(), str, strLen) : -1;
1121 if (kDebugStringPoolNoisy) {
1122 ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
1123 String8(s->data(), s->size()).string(), c, (int)l, (int)mid, (int)h);
1124 }
1125 if (c == 0) {
1126 if (kDebugStringPoolNoisy) {
1127 ALOGI("MATCH!");
1128 }
1129 return mid;
1130 } else if (c < 0) {
1131 l = mid + 1;
1132 } else {
1133 h = mid - 1;
1134 }
1135 }
1136 } else {
1137 // It is unusual to get the ID from an unsorted string block...
1138 // most often this happens because we want to get IDs for style
1139 // span tags; since those always appear at the end of the string
1140 // block, start searching at the back.
1141 for (int i=mHeader->stringCount-1; i>=0; i--) {
1142 const base::expected<StringPiece16, NullOrIOError> s = stringAt(i);
1143 if (UNLIKELY(IsIOError(s))) {
1144 return base::unexpected(s.error());
1145 }
1146 if (kDebugStringPoolNoisy) {
1147 ALOGI("Looking at %s, i=%d\n", String8(s->data(), s->size()).string(), i);
1148 }
1149 if (s.has_value() && strLen == s->size() &&
1150 strzcmp16(s->data(), s->size(), str, strLen) == 0) {
1151 if (kDebugStringPoolNoisy) {
1152 ALOGI("MATCH!");
1153 }
1154 return i;
1155 }
1156 }
1157 }
1158 }
1159 return base::unexpected(std::nullopt);
1160 }
1161
size() const1162 size_t ResStringPool::size() const
1163 {
1164 return (mError == NO_ERROR) ? mHeader->stringCount : 0;
1165 }
1166
styleCount() const1167 size_t ResStringPool::styleCount() const
1168 {
1169 return (mError == NO_ERROR) ? mHeader->styleCount : 0;
1170 }
1171
bytes() const1172 size_t ResStringPool::bytes() const
1173 {
1174 return (mError == NO_ERROR) ? mHeader->header.size : 0;
1175 }
1176
data() const1177 incfs::map_ptr<void> ResStringPool::data() const
1178 {
1179
1180 return mHeader.unsafe_ptr();
1181 }
1182
isSorted() const1183 bool ResStringPool::isSorted() const
1184 {
1185 return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
1186 }
1187
isUTF8() const1188 bool ResStringPool::isUTF8() const
1189 {
1190 return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
1191 }
1192
1193 // --------------------------------------------------------------------
1194 // --------------------------------------------------------------------
1195 // --------------------------------------------------------------------
1196
ResXMLParser(const ResXMLTree & tree)1197 ResXMLParser::ResXMLParser(const ResXMLTree& tree)
1198 : mTree(tree), mEventCode(BAD_DOCUMENT)
1199 {
1200 }
1201
restart()1202 void ResXMLParser::restart()
1203 {
1204 mCurNode = NULL;
1205 mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
1206 }
getStrings() const1207 const ResStringPool& ResXMLParser::getStrings() const
1208 {
1209 return mTree.mStrings;
1210 }
1211
getEventType() const1212 ResXMLParser::event_code_t ResXMLParser::getEventType() const
1213 {
1214 return mEventCode;
1215 }
1216
next()1217 ResXMLParser::event_code_t ResXMLParser::next()
1218 {
1219 if (mEventCode == START_DOCUMENT) {
1220 mCurNode = mTree.mRootNode;
1221 mCurExt = mTree.mRootExt;
1222 return (mEventCode=mTree.mRootCode);
1223 } else if (mEventCode >= FIRST_CHUNK_CODE) {
1224 return nextNode();
1225 }
1226 return mEventCode;
1227 }
1228
getCommentID() const1229 int32_t ResXMLParser::getCommentID() const
1230 {
1231 return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1232 }
1233
getComment(size_t * outLen) const1234 const char16_t* ResXMLParser::getComment(size_t* outLen) const
1235 {
1236 int32_t id = getCommentID();
1237 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1238 }
1239
getLineNumber() const1240 uint32_t ResXMLParser::getLineNumber() const
1241 {
1242 return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1243 }
1244
getTextID() const1245 int32_t ResXMLParser::getTextID() const
1246 {
1247 if (mEventCode == TEXT) {
1248 return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1249 }
1250 return -1;
1251 }
1252
getText(size_t * outLen) const1253 const char16_t* ResXMLParser::getText(size_t* outLen) const
1254 {
1255 int32_t id = getTextID();
1256 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1257 }
1258
getTextValue(Res_value * outValue) const1259 ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1260 {
1261 if (mEventCode == TEXT) {
1262 outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1263 return sizeof(Res_value);
1264 }
1265 return BAD_TYPE;
1266 }
1267
getNamespacePrefixID() const1268 int32_t ResXMLParser::getNamespacePrefixID() const
1269 {
1270 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1271 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1272 }
1273 return -1;
1274 }
1275
getNamespacePrefix(size_t * outLen) const1276 const char16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1277 {
1278 int32_t id = getNamespacePrefixID();
1279 //printf("prefix=%d event=%p\n", id, mEventCode);
1280 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1281 }
1282
getNamespaceUriID() const1283 int32_t ResXMLParser::getNamespaceUriID() const
1284 {
1285 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1286 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1287 }
1288 return -1;
1289 }
1290
getNamespaceUri(size_t * outLen) const1291 const char16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1292 {
1293 int32_t id = getNamespaceUriID();
1294 //printf("uri=%d event=%p\n", id, mEventCode);
1295 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1296 }
1297
getElementNamespaceID() const1298 int32_t ResXMLParser::getElementNamespaceID() const
1299 {
1300 if (mEventCode == START_TAG) {
1301 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1302 }
1303 if (mEventCode == END_TAG) {
1304 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1305 }
1306 return -1;
1307 }
1308
getElementNamespace(size_t * outLen) const1309 const char16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1310 {
1311 int32_t id = getElementNamespaceID();
1312 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1313 }
1314
getElementNameID() const1315 int32_t ResXMLParser::getElementNameID() const
1316 {
1317 if (mEventCode == START_TAG) {
1318 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1319 }
1320 if (mEventCode == END_TAG) {
1321 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1322 }
1323 return -1;
1324 }
1325
getElementName(size_t * outLen) const1326 const char16_t* ResXMLParser::getElementName(size_t* outLen) const
1327 {
1328 int32_t id = getElementNameID();
1329 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1330 }
1331
getAttributeCount() const1332 size_t ResXMLParser::getAttributeCount() const
1333 {
1334 if (mEventCode == START_TAG) {
1335 return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1336 }
1337 return 0;
1338 }
1339
getAttributeNamespaceID(size_t idx) const1340 int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1341 {
1342 if (mEventCode == START_TAG) {
1343 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1344 if (idx < dtohs(tag->attributeCount)) {
1345 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1346 (((const uint8_t*)tag)
1347 + dtohs(tag->attributeStart)
1348 + (dtohs(tag->attributeSize)*idx));
1349 return dtohl(attr->ns.index);
1350 }
1351 }
1352 return -2;
1353 }
1354
getAttributeNamespace(size_t idx,size_t * outLen) const1355 const char16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1356 {
1357 int32_t id = getAttributeNamespaceID(idx);
1358 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1359 if (kDebugXMLNoisy) {
1360 printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1361 }
1362 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1363 }
1364
getAttributeNamespace8(size_t idx,size_t * outLen) const1365 const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1366 {
1367 int32_t id = getAttributeNamespaceID(idx);
1368 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1369 if (kDebugXMLNoisy) {
1370 printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1371 }
1372 return id >= 0 ? UnpackOptionalString(mTree.mStrings.string8At(id), outLen) : NULL;
1373 }
1374
getAttributeNameID(size_t idx) const1375 int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1376 {
1377 if (mEventCode == START_TAG) {
1378 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1379 if (idx < dtohs(tag->attributeCount)) {
1380 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1381 (((const uint8_t*)tag)
1382 + dtohs(tag->attributeStart)
1383 + (dtohs(tag->attributeSize)*idx));
1384 return dtohl(attr->name.index);
1385 }
1386 }
1387 return -1;
1388 }
1389
getAttributeName(size_t idx,size_t * outLen) const1390 const char16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1391 {
1392 int32_t id = getAttributeNameID(idx);
1393 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1394 if (kDebugXMLNoisy) {
1395 printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1396 }
1397 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1398 }
1399
getAttributeName8(size_t idx,size_t * outLen) const1400 const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1401 {
1402 int32_t id = getAttributeNameID(idx);
1403 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1404 if (kDebugXMLNoisy) {
1405 printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1406 }
1407 return id >= 0 ? UnpackOptionalString(mTree.mStrings.string8At(id), outLen) : NULL;
1408 }
1409
getAttributeNameResID(size_t idx) const1410 uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1411 {
1412 int32_t id = getAttributeNameID(idx);
1413 if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1414 uint32_t resId = dtohl(mTree.mResIds[id]);
1415 if (mTree.mDynamicRefTable != NULL) {
1416 mTree.mDynamicRefTable->lookupResourceId(&resId);
1417 }
1418 return resId;
1419 }
1420 return 0;
1421 }
1422
getAttributeValueStringID(size_t idx) const1423 int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1424 {
1425 if (mEventCode == START_TAG) {
1426 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1427 if (idx < dtohs(tag->attributeCount)) {
1428 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1429 (((const uint8_t*)tag)
1430 + dtohs(tag->attributeStart)
1431 + (dtohs(tag->attributeSize)*idx));
1432 return dtohl(attr->rawValue.index);
1433 }
1434 }
1435 return -1;
1436 }
1437
getAttributeStringValue(size_t idx,size_t * outLen) const1438 const char16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1439 {
1440 int32_t id = getAttributeValueStringID(idx);
1441 if (kDebugXMLNoisy) {
1442 printf("getAttributeValue 0x%zx=0x%x\n", idx, id);
1443 }
1444 return id >= 0 ? UnpackOptionalString(mTree.mStrings.stringAt(id), outLen) : NULL;
1445 }
1446
getAttributeDataType(size_t idx) const1447 int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1448 {
1449 if (mEventCode == START_TAG) {
1450 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1451 if (idx < dtohs(tag->attributeCount)) {
1452 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1453 (((const uint8_t*)tag)
1454 + dtohs(tag->attributeStart)
1455 + (dtohs(tag->attributeSize)*idx));
1456 uint8_t type = attr->typedValue.dataType;
1457 if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1458 return type;
1459 }
1460
1461 // This is a dynamic reference. We adjust those references
1462 // to regular references at this level, so lie to the caller.
1463 return Res_value::TYPE_REFERENCE;
1464 }
1465 }
1466 return Res_value::TYPE_NULL;
1467 }
1468
getAttributeData(size_t idx) const1469 int32_t ResXMLParser::getAttributeData(size_t idx) const
1470 {
1471 if (mEventCode == START_TAG) {
1472 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1473 if (idx < dtohs(tag->attributeCount)) {
1474 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1475 (((const uint8_t*)tag)
1476 + dtohs(tag->attributeStart)
1477 + (dtohs(tag->attributeSize)*idx));
1478 if (mTree.mDynamicRefTable == NULL ||
1479 !mTree.mDynamicRefTable->requiresLookup(&attr->typedValue)) {
1480 return dtohl(attr->typedValue.data);
1481 }
1482 uint32_t data = dtohl(attr->typedValue.data);
1483 if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1484 return data;
1485 }
1486 }
1487 }
1488 return 0;
1489 }
1490
getAttributeValue(size_t idx,Res_value * outValue) const1491 ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1492 {
1493 if (mEventCode == START_TAG) {
1494 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1495 if (idx < dtohs(tag->attributeCount)) {
1496 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1497 (((const uint8_t*)tag)
1498 + dtohs(tag->attributeStart)
1499 + (dtohs(tag->attributeSize)*idx));
1500 outValue->copyFrom_dtoh(attr->typedValue);
1501 if (mTree.mDynamicRefTable != NULL &&
1502 mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1503 return BAD_TYPE;
1504 }
1505 return sizeof(Res_value);
1506 }
1507 }
1508 return BAD_TYPE;
1509 }
1510
indexOfAttribute(const char * ns,const char * attr) const1511 ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1512 {
1513 String16 nsStr(ns != NULL ? ns : "");
1514 String16 attrStr(attr);
1515 return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1516 attrStr.string(), attrStr.size());
1517 }
1518
indexOfAttribute(const char16_t * ns,size_t nsLen,const char16_t * attr,size_t attrLen) const1519 ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1520 const char16_t* attr, size_t attrLen) const
1521 {
1522 if (mEventCode == START_TAG) {
1523 if (attr == NULL) {
1524 return NAME_NOT_FOUND;
1525 }
1526 const size_t N = getAttributeCount();
1527 if (mTree.mStrings.isUTF8()) {
1528 String8 ns8, attr8;
1529 if (ns != NULL) {
1530 ns8 = String8(ns, nsLen);
1531 }
1532 attr8 = String8(attr, attrLen);
1533 if (kDebugStringPoolNoisy) {
1534 ALOGI("indexOfAttribute UTF8 %s (%zu) / %s (%zu)", ns8.string(), nsLen,
1535 attr8.string(), attrLen);
1536 }
1537 for (size_t i=0; i<N; i++) {
1538 size_t curNsLen = 0, curAttrLen = 0;
1539 const char* curNs = getAttributeNamespace8(i, &curNsLen);
1540 const char* curAttr = getAttributeName8(i, &curAttrLen);
1541 if (kDebugStringPoolNoisy) {
1542 ALOGI(" curNs=%s (%zu), curAttr=%s (%zu)", curNs, curNsLen, curAttr, curAttrLen);
1543 }
1544 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1545 && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1546 if (ns == NULL) {
1547 if (curNs == NULL) {
1548 if (kDebugStringPoolNoisy) {
1549 ALOGI(" FOUND!");
1550 }
1551 return i;
1552 }
1553 } else if (curNs != NULL) {
1554 //printf(" --> ns=%s, curNs=%s\n",
1555 // String8(ns).string(), String8(curNs).string());
1556 if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1557 if (kDebugStringPoolNoisy) {
1558 ALOGI(" FOUND!");
1559 }
1560 return i;
1561 }
1562 }
1563 }
1564 }
1565 } else {
1566 if (kDebugStringPoolNoisy) {
1567 ALOGI("indexOfAttribute UTF16 %s (%zu) / %s (%zu)",
1568 String8(ns, nsLen).string(), nsLen,
1569 String8(attr, attrLen).string(), attrLen);
1570 }
1571 for (size_t i=0; i<N; i++) {
1572 size_t curNsLen = 0, curAttrLen = 0;
1573 const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1574 const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1575 if (kDebugStringPoolNoisy) {
1576 ALOGI(" curNs=%s (%zu), curAttr=%s (%zu)",
1577 String8(curNs, curNsLen).string(), curNsLen,
1578 String8(curAttr, curAttrLen).string(), curAttrLen);
1579 }
1580 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1581 && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1582 if (ns == NULL) {
1583 if (curNs == NULL) {
1584 if (kDebugStringPoolNoisy) {
1585 ALOGI(" FOUND!");
1586 }
1587 return i;
1588 }
1589 } else if (curNs != NULL) {
1590 //printf(" --> ns=%s, curNs=%s\n",
1591 // String8(ns).string(), String8(curNs).string());
1592 if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1593 if (kDebugStringPoolNoisy) {
1594 ALOGI(" FOUND!");
1595 }
1596 return i;
1597 }
1598 }
1599 }
1600 }
1601 }
1602 }
1603
1604 return NAME_NOT_FOUND;
1605 }
1606
indexOfID() const1607 ssize_t ResXMLParser::indexOfID() const
1608 {
1609 if (mEventCode == START_TAG) {
1610 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1611 if (idx > 0) return (idx-1);
1612 }
1613 return NAME_NOT_FOUND;
1614 }
1615
indexOfClass() const1616 ssize_t ResXMLParser::indexOfClass() const
1617 {
1618 if (mEventCode == START_TAG) {
1619 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1620 if (idx > 0) return (idx-1);
1621 }
1622 return NAME_NOT_FOUND;
1623 }
1624
indexOfStyle() const1625 ssize_t ResXMLParser::indexOfStyle() const
1626 {
1627 if (mEventCode == START_TAG) {
1628 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1629 if (idx > 0) return (idx-1);
1630 }
1631 return NAME_NOT_FOUND;
1632 }
1633
nextNode()1634 ResXMLParser::event_code_t ResXMLParser::nextNode()
1635 {
1636 if (mEventCode < 0) {
1637 return mEventCode;
1638 }
1639
1640 do {
1641 const ResXMLTree_node* next = (const ResXMLTree_node*)
1642 (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1643 if (kDebugXMLNoisy) {
1644 ALOGI("Next node: prev=%p, next=%p\n", mCurNode, next);
1645 }
1646
1647 if (((const uint8_t*)next) >= mTree.mDataEnd) {
1648 mCurNode = NULL;
1649 return (mEventCode=END_DOCUMENT);
1650 }
1651
1652 if (mTree.validateNode(next) != NO_ERROR) {
1653 mCurNode = NULL;
1654 return (mEventCode=BAD_DOCUMENT);
1655 }
1656
1657 mCurNode = next;
1658 const uint16_t headerSize = dtohs(next->header.headerSize);
1659 const uint32_t totalSize = dtohl(next->header.size);
1660 mCurExt = ((const uint8_t*)next) + headerSize;
1661 size_t minExtSize = 0;
1662 event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1663 switch ((mEventCode=eventCode)) {
1664 case RES_XML_START_NAMESPACE_TYPE:
1665 case RES_XML_END_NAMESPACE_TYPE:
1666 minExtSize = sizeof(ResXMLTree_namespaceExt);
1667 break;
1668 case RES_XML_START_ELEMENT_TYPE:
1669 minExtSize = sizeof(ResXMLTree_attrExt);
1670 break;
1671 case RES_XML_END_ELEMENT_TYPE:
1672 minExtSize = sizeof(ResXMLTree_endElementExt);
1673 break;
1674 case RES_XML_CDATA_TYPE:
1675 minExtSize = sizeof(ResXMLTree_cdataExt);
1676 break;
1677 default:
1678 ALOGW("Unknown XML block: header type %d in node at %d\n",
1679 (int)dtohs(next->header.type),
1680 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1681 continue;
1682 }
1683
1684 if ((totalSize-headerSize) < minExtSize) {
1685 ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1686 (int)dtohs(next->header.type),
1687 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1688 (int)(totalSize-headerSize), (int)minExtSize);
1689 return (mEventCode=BAD_DOCUMENT);
1690 }
1691
1692 //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1693 // mCurNode, mCurExt, headerSize, minExtSize);
1694
1695 return eventCode;
1696 } while (true);
1697 }
1698
getPosition(ResXMLParser::ResXMLPosition * pos) const1699 void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1700 {
1701 pos->eventCode = mEventCode;
1702 pos->curNode = mCurNode;
1703 pos->curExt = mCurExt;
1704 }
1705
setPosition(const ResXMLParser::ResXMLPosition & pos)1706 void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1707 {
1708 mEventCode = pos.eventCode;
1709 mCurNode = pos.curNode;
1710 mCurExt = pos.curExt;
1711 }
1712
setSourceResourceId(const uint32_t resId)1713 void ResXMLParser::setSourceResourceId(const uint32_t resId)
1714 {
1715 mSourceResourceId = resId;
1716 }
1717
getSourceResourceId() const1718 uint32_t ResXMLParser::getSourceResourceId() const
1719 {
1720 return mSourceResourceId;
1721 }
1722
1723 // --------------------------------------------------------------------
1724
1725 static volatile int32_t gCount = 0;
1726
ResXMLTree(std::shared_ptr<const DynamicRefTable> dynamicRefTable)1727 ResXMLTree::ResXMLTree(std::shared_ptr<const DynamicRefTable> dynamicRefTable)
1728 : ResXMLParser(*this)
1729 , mDynamicRefTable(std::move(dynamicRefTable))
1730 , mError(NO_INIT), mOwnedData(NULL)
1731 {
1732 if (kDebugResXMLTree) {
1733 ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1734 }
1735 restart();
1736 }
1737
ResXMLTree()1738 ResXMLTree::ResXMLTree()
1739 : ResXMLParser(*this)
1740 , mDynamicRefTable(nullptr)
1741 , mError(NO_INIT), mOwnedData(NULL)
1742 {
1743 if (kDebugResXMLTree) {
1744 ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1745 }
1746 restart();
1747 }
1748
~ResXMLTree()1749 ResXMLTree::~ResXMLTree()
1750 {
1751 if (kDebugResXMLTree) {
1752 ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1753 }
1754 uninit();
1755 }
1756
setTo(const void * data,size_t size,bool copyData)1757 status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1758 {
1759 uninit();
1760 mEventCode = START_DOCUMENT;
1761
1762 if (!data || !size) {
1763 return (mError=BAD_TYPE);
1764 }
1765
1766 if (copyData) {
1767 mOwnedData = malloc(size);
1768 if (mOwnedData == NULL) {
1769 return (mError=NO_MEMORY);
1770 }
1771 memcpy(mOwnedData, data, size);
1772 data = mOwnedData;
1773 }
1774
1775 mHeader = (const ResXMLTree_header*)data;
1776 mSize = dtohl(mHeader->header.size);
1777 if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1778 ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1779 (int)dtohs(mHeader->header.headerSize),
1780 (int)dtohl(mHeader->header.size), (int)size);
1781 mError = BAD_TYPE;
1782 restart();
1783 return mError;
1784 }
1785 mDataEnd = ((const uint8_t*)mHeader) + mSize;
1786
1787 mStrings.uninit();
1788 mRootNode = NULL;
1789 mResIds = NULL;
1790 mNumResIds = 0;
1791
1792 // First look for a couple interesting chunks: the string block
1793 // and first XML node.
1794 const ResChunk_header* chunk =
1795 (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1796 const ResChunk_header* lastChunk = chunk;
1797 while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1798 ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1799 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1800 if (err != NO_ERROR) {
1801 mError = err;
1802 goto done;
1803 }
1804 const uint16_t type = dtohs(chunk->type);
1805 const size_t size = dtohl(chunk->size);
1806 if (kDebugXMLNoisy) {
1807 printf("Scanning @ %p: type=0x%x, size=0x%zx\n",
1808 (void*)(((uintptr_t)chunk)-((uintptr_t)mHeader)), type, size);
1809 }
1810 if (type == RES_STRING_POOL_TYPE) {
1811 mStrings.setTo(chunk, size);
1812 } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1813 mResIds = (const uint32_t*)
1814 (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1815 mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1816 } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1817 && type <= RES_XML_LAST_CHUNK_TYPE) {
1818 if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1819 mError = BAD_TYPE;
1820 goto done;
1821 }
1822 mCurNode = (const ResXMLTree_node*)lastChunk;
1823 if (nextNode() == BAD_DOCUMENT) {
1824 mError = BAD_TYPE;
1825 goto done;
1826 }
1827 mRootNode = mCurNode;
1828 mRootExt = mCurExt;
1829 mRootCode = mEventCode;
1830 break;
1831 } else {
1832 if (kDebugXMLNoisy) {
1833 printf("Skipping unknown chunk!\n");
1834 }
1835 }
1836 lastChunk = chunk;
1837 chunk = (const ResChunk_header*)
1838 (((const uint8_t*)chunk) + size);
1839 }
1840
1841 if (mRootNode == NULL) {
1842 ALOGW("Bad XML block: no root element node found\n");
1843 mError = BAD_TYPE;
1844 goto done;
1845 }
1846
1847 mError = mStrings.getError();
1848
1849 done:
1850 restart();
1851 return mError;
1852 }
1853
getError() const1854 status_t ResXMLTree::getError() const
1855 {
1856 return mError;
1857 }
1858
uninit()1859 void ResXMLTree::uninit()
1860 {
1861 mError = NO_INIT;
1862 mStrings.uninit();
1863 if (mOwnedData) {
1864 free(mOwnedData);
1865 mOwnedData = NULL;
1866 }
1867 restart();
1868 }
1869
validateNode(const ResXMLTree_node * node) const1870 status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1871 {
1872 const uint16_t eventCode = dtohs(node->header.type);
1873
1874 status_t err = validate_chunk(
1875 &node->header, sizeof(ResXMLTree_node),
1876 mDataEnd, "ResXMLTree_node");
1877
1878 if (err >= NO_ERROR) {
1879 // Only perform additional validation on START nodes
1880 if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1881 return NO_ERROR;
1882 }
1883
1884 const uint16_t headerSize = dtohs(node->header.headerSize);
1885 const uint32_t size = dtohl(node->header.size);
1886 const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1887 (((const uint8_t*)node) + headerSize);
1888 // check for sensical values pulled out of the stream so far...
1889 if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1890 && ((void*)attrExt > (void*)node)) {
1891 const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1892 * dtohs(attrExt->attributeCount);
1893 if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1894 return NO_ERROR;
1895 }
1896 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1897 (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1898 (unsigned int)(size-headerSize));
1899 }
1900 else {
1901 ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1902 (unsigned int)headerSize, (unsigned int)size);
1903 }
1904 return BAD_TYPE;
1905 }
1906
1907 return err;
1908
1909 #if 0
1910 const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1911
1912 const uint16_t headerSize = dtohs(node->header.headerSize);
1913 const uint32_t size = dtohl(node->header.size);
1914
1915 if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1916 if (size >= headerSize) {
1917 if (((const uint8_t*)node) <= (mDataEnd-size)) {
1918 if (!isStart) {
1919 return NO_ERROR;
1920 }
1921 if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1922 <= (size-headerSize)) {
1923 return NO_ERROR;
1924 }
1925 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1926 ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1927 (int)(size-headerSize));
1928 return BAD_TYPE;
1929 }
1930 ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1931 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1932 return BAD_TYPE;
1933 }
1934 ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1935 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1936 (int)headerSize, (int)size);
1937 return BAD_TYPE;
1938 }
1939 ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1940 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1941 (int)headerSize);
1942 return BAD_TYPE;
1943 #endif
1944 }
1945
1946 // --------------------------------------------------------------------
1947 // --------------------------------------------------------------------
1948 // --------------------------------------------------------------------
1949
copyFromDeviceNoSwap(const ResTable_config & o)1950 void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1951 const size_t size = dtohl(o.size);
1952 if (size >= sizeof(ResTable_config)) {
1953 *this = o;
1954 } else {
1955 memcpy(this, &o, size);
1956 memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1957 }
1958 }
1959
unpackLanguageOrRegion(const char in[2],const char base,char out[4])1960 /* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1961 char out[4]) {
1962 if (in[0] & 0x80) {
1963 // The high bit is "1", which means this is a packed three letter
1964 // language code.
1965
1966 // The smallest 5 bits of the second char are the first alphabet.
1967 const uint8_t first = in[1] & 0x1f;
1968 // The last three bits of the second char and the first two bits
1969 // of the first char are the second alphabet.
1970 const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1971 // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1972 const uint8_t third = (in[0] & 0x7c) >> 2;
1973
1974 out[0] = first + base;
1975 out[1] = second + base;
1976 out[2] = third + base;
1977 out[3] = 0;
1978
1979 return 3;
1980 }
1981
1982 if (in[0]) {
1983 memcpy(out, in, 2);
1984 memset(out + 2, 0, 2);
1985 return 2;
1986 }
1987
1988 memset(out, 0, 4);
1989 return 0;
1990 }
1991
packLanguageOrRegion(const char * in,const char base,char out[2])1992 /* static */ void packLanguageOrRegion(const char* in, const char base,
1993 char out[2]) {
1994 if (in[2] == 0 || in[2] == '-') {
1995 out[0] = in[0];
1996 out[1] = in[1];
1997 } else {
1998 uint8_t first = (in[0] - base) & 0x007f;
1999 uint8_t second = (in[1] - base) & 0x007f;
2000 uint8_t third = (in[2] - base) & 0x007f;
2001
2002 out[0] = (0x80 | (third << 2) | (second >> 3));
2003 out[1] = ((second << 5) | first);
2004 }
2005 }
2006
2007
packLanguage(const char * language)2008 void ResTable_config::packLanguage(const char* language) {
2009 packLanguageOrRegion(language, 'a', this->language);
2010 }
2011
packRegion(const char * region)2012 void ResTable_config::packRegion(const char* region) {
2013 packLanguageOrRegion(region, '0', this->country);
2014 }
2015
unpackLanguage(char language[4]) const2016 size_t ResTable_config::unpackLanguage(char language[4]) const {
2017 return unpackLanguageOrRegion(this->language, 'a', language);
2018 }
2019
unpackRegion(char region[4]) const2020 size_t ResTable_config::unpackRegion(char region[4]) const {
2021 return unpackLanguageOrRegion(this->country, '0', region);
2022 }
2023
2024
copyFromDtoH(const ResTable_config & o)2025 void ResTable_config::copyFromDtoH(const ResTable_config& o) {
2026 copyFromDeviceNoSwap(o);
2027 size = sizeof(ResTable_config);
2028 mcc = dtohs(mcc);
2029 mnc = dtohs(mnc);
2030 density = dtohs(density);
2031 screenWidth = dtohs(screenWidth);
2032 screenHeight = dtohs(screenHeight);
2033 sdkVersion = dtohs(sdkVersion);
2034 minorVersion = dtohs(minorVersion);
2035 smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
2036 screenWidthDp = dtohs(screenWidthDp);
2037 screenHeightDp = dtohs(screenHeightDp);
2038 }
2039
swapHtoD()2040 void ResTable_config::swapHtoD() {
2041 size = htodl(size);
2042 mcc = htods(mcc);
2043 mnc = htods(mnc);
2044 density = htods(density);
2045 screenWidth = htods(screenWidth);
2046 screenHeight = htods(screenHeight);
2047 sdkVersion = htods(sdkVersion);
2048 minorVersion = htods(minorVersion);
2049 smallestScreenWidthDp = htods(smallestScreenWidthDp);
2050 screenWidthDp = htods(screenWidthDp);
2051 screenHeightDp = htods(screenHeightDp);
2052 }
2053
compareLocales(const ResTable_config & l,const ResTable_config & r)2054 /* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
2055 if (l.locale != r.locale) {
2056 return (l.locale > r.locale) ? 1 : -1;
2057 }
2058
2059 // The language & region are equal, so compare the scripts, variants and
2060 // numbering systms in this order. Comparison of variants and numbering
2061 // systems should happen very infrequently (if at all.)
2062 // The comparison code relies on memcmp low-level optimizations that make it
2063 // more efficient than strncmp.
2064 const char emptyScript[sizeof(l.localeScript)] = {'\0', '\0', '\0', '\0'};
2065 const char *lScript = l.localeScriptWasComputed ? emptyScript : l.localeScript;
2066 const char *rScript = r.localeScriptWasComputed ? emptyScript : r.localeScript;
2067
2068 int script = memcmp(lScript, rScript, sizeof(l.localeScript));
2069 if (script) {
2070 return script;
2071 }
2072
2073 int variant = memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
2074 if (variant) {
2075 return variant;
2076 }
2077
2078 return memcmp(l.localeNumberingSystem, r.localeNumberingSystem,
2079 sizeof(l.localeNumberingSystem));
2080 }
2081
compare(const ResTable_config & o) const2082 int ResTable_config::compare(const ResTable_config& o) const {
2083 if (imsi != o.imsi) {
2084 return (imsi > o.imsi) ? 1 : -1;
2085 }
2086
2087 int32_t diff = compareLocales(*this, o);
2088 if (diff < 0) {
2089 return -1;
2090 }
2091 if (diff > 0) {
2092 return 1;
2093 }
2094
2095 if (screenType != o.screenType) {
2096 return (screenType > o.screenType) ? 1 : -1;
2097 }
2098 if (input != o.input) {
2099 return (input > o.input) ? 1 : -1;
2100 }
2101 if (screenSize != o.screenSize) {
2102 return (screenSize > o.screenSize) ? 1 : -1;
2103 }
2104 if (version != o.version) {
2105 return (version > o.version) ? 1 : -1;
2106 }
2107 if (screenLayout != o.screenLayout) {
2108 return (screenLayout > o.screenLayout) ? 1 : -1;
2109 }
2110 if (screenLayout2 != o.screenLayout2) {
2111 return (screenLayout2 > o.screenLayout2) ? 1 : -1;
2112 }
2113 if (colorMode != o.colorMode) {
2114 return (colorMode > o.colorMode) ? 1 : -1;
2115 }
2116 if (uiMode != o.uiMode) {
2117 return (uiMode > o.uiMode) ? 1 : -1;
2118 }
2119 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2120 return (smallestScreenWidthDp > o.smallestScreenWidthDp) ? 1 : -1;
2121 }
2122 if (screenSizeDp != o.screenSizeDp) {
2123 return (screenSizeDp > o.screenSizeDp) ? 1 : -1;
2124 }
2125 return 0;
2126 }
2127
compareLogical(const ResTable_config & o) const2128 int ResTable_config::compareLogical(const ResTable_config& o) const {
2129 if (mcc != o.mcc) {
2130 return mcc < o.mcc ? -1 : 1;
2131 }
2132 if (mnc != o.mnc) {
2133 return mnc < o.mnc ? -1 : 1;
2134 }
2135
2136 int diff = compareLocales(*this, o);
2137 if (diff < 0) {
2138 return -1;
2139 }
2140 if (diff > 0) {
2141 return 1;
2142 }
2143
2144 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
2145 return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
2146 }
2147 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2148 return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
2149 }
2150 if (screenWidthDp != o.screenWidthDp) {
2151 return screenWidthDp < o.screenWidthDp ? -1 : 1;
2152 }
2153 if (screenHeightDp != o.screenHeightDp) {
2154 return screenHeightDp < o.screenHeightDp ? -1 : 1;
2155 }
2156 if (screenWidth != o.screenWidth) {
2157 return screenWidth < o.screenWidth ? -1 : 1;
2158 }
2159 if (screenHeight != o.screenHeight) {
2160 return screenHeight < o.screenHeight ? -1 : 1;
2161 }
2162 if (density != o.density) {
2163 return density < o.density ? -1 : 1;
2164 }
2165 if (orientation != o.orientation) {
2166 return orientation < o.orientation ? -1 : 1;
2167 }
2168 if (touchscreen != o.touchscreen) {
2169 return touchscreen < o.touchscreen ? -1 : 1;
2170 }
2171 if (input != o.input) {
2172 return input < o.input ? -1 : 1;
2173 }
2174 if (screenLayout != o.screenLayout) {
2175 return screenLayout < o.screenLayout ? -1 : 1;
2176 }
2177 if (screenLayout2 != o.screenLayout2) {
2178 return screenLayout2 < o.screenLayout2 ? -1 : 1;
2179 }
2180 if (colorMode != o.colorMode) {
2181 return colorMode < o.colorMode ? -1 : 1;
2182 }
2183 if (uiMode != o.uiMode) {
2184 return uiMode < o.uiMode ? -1 : 1;
2185 }
2186 if (version != o.version) {
2187 return version < o.version ? -1 : 1;
2188 }
2189 return 0;
2190 }
2191
diff(const ResTable_config & o) const2192 int ResTable_config::diff(const ResTable_config& o) const {
2193 int diffs = 0;
2194 if (mcc != o.mcc) diffs |= CONFIG_MCC;
2195 if (mnc != o.mnc) diffs |= CONFIG_MNC;
2196 if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
2197 if (density != o.density) diffs |= CONFIG_DENSITY;
2198 if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
2199 if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
2200 diffs |= CONFIG_KEYBOARD_HIDDEN;
2201 if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
2202 if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
2203 if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
2204 if (version != o.version) diffs |= CONFIG_VERSION;
2205 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
2206 if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
2207 if ((screenLayout2 & MASK_SCREENROUND) != (o.screenLayout2 & MASK_SCREENROUND)) diffs |= CONFIG_SCREEN_ROUND;
2208 if ((colorMode & MASK_WIDE_COLOR_GAMUT) != (o.colorMode & MASK_WIDE_COLOR_GAMUT)) diffs |= CONFIG_COLOR_MODE;
2209 if ((colorMode & MASK_HDR) != (o.colorMode & MASK_HDR)) diffs |= CONFIG_COLOR_MODE;
2210 if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
2211 if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
2212 if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
2213
2214 const int diff = compareLocales(*this, o);
2215 if (diff) diffs |= CONFIG_LOCALE;
2216
2217 return diffs;
2218 }
2219
2220 // There isn't a well specified "importance" order between variants and
2221 // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
2222 // specific than "en-US-POSIX".
2223 //
2224 // We therefore arbitrarily decide to give priority to variants over
2225 // scripts since it seems more useful to do so. We will consider
2226 // "en-US-POSIX" to be more specific than "en-Latn-US".
2227 //
2228 // Unicode extension keywords are considered to be less important than
2229 // scripts and variants.
getImportanceScoreOfLocale() const2230 inline int ResTable_config::getImportanceScoreOfLocale() const {
2231 return (localeVariant[0] ? 4 : 0)
2232 + (localeScript[0] && !localeScriptWasComputed ? 2: 0)
2233 + (localeNumberingSystem[0] ? 1: 0);
2234 }
2235
isLocaleMoreSpecificThan(const ResTable_config & o) const2236 int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
2237 if (locale || o.locale) {
2238 if (language[0] != o.language[0]) {
2239 if (!language[0]) return -1;
2240 if (!o.language[0]) return 1;
2241 }
2242
2243 if (country[0] != o.country[0]) {
2244 if (!country[0]) return -1;
2245 if (!o.country[0]) return 1;
2246 }
2247 }
2248
2249 return getImportanceScoreOfLocale() - o.getImportanceScoreOfLocale();
2250 }
2251
isMoreSpecificThan(const ResTable_config & o) const2252 bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
2253 // The order of the following tests defines the importance of one
2254 // configuration parameter over another. Those tests first are more
2255 // important, trumping any values in those following them.
2256 if (imsi || o.imsi) {
2257 if (mcc != o.mcc) {
2258 if (!mcc) return false;
2259 if (!o.mcc) return true;
2260 }
2261
2262 if (mnc != o.mnc) {
2263 if (!mnc) return false;
2264 if (!o.mnc) return true;
2265 }
2266 }
2267
2268 if (locale || o.locale) {
2269 const int diff = isLocaleMoreSpecificThan(o);
2270 if (diff < 0) {
2271 return false;
2272 }
2273
2274 if (diff > 0) {
2275 return true;
2276 }
2277 }
2278
2279 if (screenLayout || o.screenLayout) {
2280 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
2281 if (!(screenLayout & MASK_LAYOUTDIR)) return false;
2282 if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
2283 }
2284 }
2285
2286 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2287 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2288 if (!smallestScreenWidthDp) return false;
2289 if (!o.smallestScreenWidthDp) return true;
2290 }
2291 }
2292
2293 if (screenSizeDp || o.screenSizeDp) {
2294 if (screenWidthDp != o.screenWidthDp) {
2295 if (!screenWidthDp) return false;
2296 if (!o.screenWidthDp) return true;
2297 }
2298
2299 if (screenHeightDp != o.screenHeightDp) {
2300 if (!screenHeightDp) return false;
2301 if (!o.screenHeightDp) return true;
2302 }
2303 }
2304
2305 if (screenLayout || o.screenLayout) {
2306 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
2307 if (!(screenLayout & MASK_SCREENSIZE)) return false;
2308 if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2309 }
2310 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2311 if (!(screenLayout & MASK_SCREENLONG)) return false;
2312 if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2313 }
2314 }
2315
2316 if (screenLayout2 || o.screenLayout2) {
2317 if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0) {
2318 if (!(screenLayout2 & MASK_SCREENROUND)) return false;
2319 if (!(o.screenLayout2 & MASK_SCREENROUND)) return true;
2320 }
2321 }
2322
2323 if (colorMode || o.colorMode) {
2324 if (((colorMode^o.colorMode) & MASK_HDR) != 0) {
2325 if (!(colorMode & MASK_HDR)) return false;
2326 if (!(o.colorMode & MASK_HDR)) return true;
2327 }
2328 if (((colorMode^o.colorMode) & MASK_WIDE_COLOR_GAMUT) != 0) {
2329 if (!(colorMode & MASK_WIDE_COLOR_GAMUT)) return false;
2330 if (!(o.colorMode & MASK_WIDE_COLOR_GAMUT)) return true;
2331 }
2332 }
2333
2334 if (orientation != o.orientation) {
2335 if (!orientation) return false;
2336 if (!o.orientation) return true;
2337 }
2338
2339 if (uiMode || o.uiMode) {
2340 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2341 if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2342 if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2343 }
2344 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2345 if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2346 if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2347 }
2348 }
2349
2350 // density is never 'more specific'
2351 // as the default just equals 160
2352
2353 if (touchscreen != o.touchscreen) {
2354 if (!touchscreen) return false;
2355 if (!o.touchscreen) return true;
2356 }
2357
2358 if (input || o.input) {
2359 if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2360 if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2361 if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2362 }
2363
2364 if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2365 if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2366 if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2367 }
2368
2369 if (keyboard != o.keyboard) {
2370 if (!keyboard) return false;
2371 if (!o.keyboard) return true;
2372 }
2373
2374 if (navigation != o.navigation) {
2375 if (!navigation) return false;
2376 if (!o.navigation) return true;
2377 }
2378 }
2379
2380 if (screenSize || o.screenSize) {
2381 if (screenWidth != o.screenWidth) {
2382 if (!screenWidth) return false;
2383 if (!o.screenWidth) return true;
2384 }
2385
2386 if (screenHeight != o.screenHeight) {
2387 if (!screenHeight) return false;
2388 if (!o.screenHeight) return true;
2389 }
2390 }
2391
2392 if (version || o.version) {
2393 if (sdkVersion != o.sdkVersion) {
2394 if (!sdkVersion) return false;
2395 if (!o.sdkVersion) return true;
2396 }
2397
2398 if (minorVersion != o.minorVersion) {
2399 if (!minorVersion) return false;
2400 if (!o.minorVersion) return true;
2401 }
2402 }
2403 return false;
2404 }
2405
2406 // Codes for specially handled languages and regions
2407 static const char kEnglish[2] = {'e', 'n'}; // packed version of "en"
2408 static const char kUnitedStates[2] = {'U', 'S'}; // packed version of "US"
2409 static const char kFilipino[2] = {'\xAD', '\x05'}; // packed version of "fil"
2410 static const char kTagalog[2] = {'t', 'l'}; // packed version of "tl"
2411
2412 // Checks if two language or region codes are identical
areIdentical(const char code1[2],const char code2[2])2413 inline bool areIdentical(const char code1[2], const char code2[2]) {
2414 return code1[0] == code2[0] && code1[1] == code2[1];
2415 }
2416
langsAreEquivalent(const char lang1[2],const char lang2[2])2417 inline bool langsAreEquivalent(const char lang1[2], const char lang2[2]) {
2418 return areIdentical(lang1, lang2) ||
2419 (areIdentical(lang1, kTagalog) && areIdentical(lang2, kFilipino)) ||
2420 (areIdentical(lang1, kFilipino) && areIdentical(lang2, kTagalog));
2421 }
2422
isLocaleBetterThan(const ResTable_config & o,const ResTable_config * requested) const2423 bool ResTable_config::isLocaleBetterThan(const ResTable_config& o,
2424 const ResTable_config* requested) const {
2425 if (requested->locale == 0) {
2426 // The request doesn't have a locale, so no resource is better
2427 // than the other.
2428 return false;
2429 }
2430
2431 if (locale == 0 && o.locale == 0) {
2432 // The locale part of both resources is empty, so none is better
2433 // than the other.
2434 return false;
2435 }
2436
2437 // Non-matching locales have been filtered out, so both resources
2438 // match the requested locale.
2439 //
2440 // Because of the locale-related checks in match() and the checks, we know
2441 // that:
2442 // 1) The resource languages are either empty or match the request;
2443 // and
2444 // 2) If the request's script is known, the resource scripts are either
2445 // unknown or match the request.
2446
2447 if (!langsAreEquivalent(language, o.language)) {
2448 // The languages of the two resources are not equivalent. If we are
2449 // here, we can only assume that the two resources matched the request
2450 // because one doesn't have a language and the other has a matching
2451 // language.
2452 //
2453 // We consider the one that has the language specified a better match.
2454 //
2455 // The exception is that we consider no-language resources a better match
2456 // for US English and similar locales than locales that are a descendant
2457 // of Internatinal English (en-001), since no-language resources are
2458 // where the US English resource have traditionally lived for most apps.
2459 if (areIdentical(requested->language, kEnglish)) {
2460 if (areIdentical(requested->country, kUnitedStates)) {
2461 // For US English itself, we consider a no-locale resource a
2462 // better match if the other resource has a country other than
2463 // US specified.
2464 if (language[0] != '\0') {
2465 return country[0] == '\0' || areIdentical(country, kUnitedStates);
2466 } else {
2467 return !(o.country[0] == '\0' || areIdentical(o.country, kUnitedStates));
2468 }
2469 } else if (localeDataIsCloseToUsEnglish(requested->country)) {
2470 if (language[0] != '\0') {
2471 return localeDataIsCloseToUsEnglish(country);
2472 } else {
2473 return !localeDataIsCloseToUsEnglish(o.country);
2474 }
2475 }
2476 }
2477 return (language[0] != '\0');
2478 }
2479
2480 // If we are here, both the resources have an equivalent non-empty language
2481 // to the request.
2482 //
2483 // Because the languages are equivalent, computeScript() always returns a
2484 // non-empty script for languages it knows about, and we have passed the
2485 // script checks in match(), the scripts are either all unknown or are all
2486 // the same. So we can't gain anything by checking the scripts. We need to
2487 // check the region and variant.
2488
2489 // See if any of the regions is better than the other.
2490 const int region_comparison = localeDataCompareRegions(
2491 country, o.country,
2492 requested->language, requested->localeScript, requested->country);
2493 if (region_comparison != 0) {
2494 return (region_comparison > 0);
2495 }
2496
2497 // The regions are the same. Try the variant.
2498 const bool localeMatches = strncmp(
2499 localeVariant, requested->localeVariant, sizeof(localeVariant)) == 0;
2500 const bool otherMatches = strncmp(
2501 o.localeVariant, requested->localeVariant, sizeof(localeVariant)) == 0;
2502 if (localeMatches != otherMatches) {
2503 return localeMatches;
2504 }
2505
2506 // The variants are the same, try numbering system.
2507 const bool localeNumsysMatches = strncmp(localeNumberingSystem,
2508 requested->localeNumberingSystem,
2509 sizeof(localeNumberingSystem)) == 0;
2510 const bool otherNumsysMatches = strncmp(o.localeNumberingSystem,
2511 requested->localeNumberingSystem,
2512 sizeof(localeNumberingSystem)) == 0;
2513 if (localeNumsysMatches != otherNumsysMatches) {
2514 return localeNumsysMatches;
2515 }
2516
2517 // Finally, the languages, although equivalent, may still be different
2518 // (like for Tagalog and Filipino). Identical is better than just
2519 // equivalent.
2520 if (areIdentical(language, requested->language)
2521 && !areIdentical(o.language, requested->language)) {
2522 return true;
2523 }
2524
2525 return false;
2526 }
2527
isBetterThan(const ResTable_config & o,const ResTable_config * requested) const2528 bool ResTable_config::isBetterThan(const ResTable_config& o,
2529 const ResTable_config* requested) const {
2530 if (requested) {
2531 if (imsi || o.imsi) {
2532 if ((mcc != o.mcc) && requested->mcc) {
2533 return (mcc);
2534 }
2535
2536 if ((mnc != o.mnc) && requested->mnc) {
2537 return (mnc);
2538 }
2539 }
2540
2541 if (isLocaleBetterThan(o, requested)) {
2542 return true;
2543 }
2544
2545 if (screenLayout || o.screenLayout) {
2546 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2547 && (requested->screenLayout & MASK_LAYOUTDIR)) {
2548 int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2549 int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2550 return (myLayoutDir > oLayoutDir);
2551 }
2552 }
2553
2554 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2555 // The configuration closest to the actual size is best.
2556 // We assume that larger configs have already been filtered
2557 // out at this point. That means we just want the largest one.
2558 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2559 return smallestScreenWidthDp > o.smallestScreenWidthDp;
2560 }
2561 }
2562
2563 if (screenSizeDp || o.screenSizeDp) {
2564 // "Better" is based on the sum of the difference between both
2565 // width and height from the requested dimensions. We are
2566 // assuming the invalid configs (with smaller dimens) have
2567 // already been filtered. Note that if a particular dimension
2568 // is unspecified, we will end up with a large value (the
2569 // difference between 0 and the requested dimension), which is
2570 // good since we will prefer a config that has specified a
2571 // dimension value.
2572 int myDelta = 0, otherDelta = 0;
2573 if (requested->screenWidthDp) {
2574 myDelta += requested->screenWidthDp - screenWidthDp;
2575 otherDelta += requested->screenWidthDp - o.screenWidthDp;
2576 }
2577 if (requested->screenHeightDp) {
2578 myDelta += requested->screenHeightDp - screenHeightDp;
2579 otherDelta += requested->screenHeightDp - o.screenHeightDp;
2580 }
2581 if (kDebugTableSuperNoisy) {
2582 ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2583 screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2584 requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2585 }
2586 if (myDelta != otherDelta) {
2587 return myDelta < otherDelta;
2588 }
2589 }
2590
2591 if (screenLayout || o.screenLayout) {
2592 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2593 && (requested->screenLayout & MASK_SCREENSIZE)) {
2594 // A little backwards compatibility here: undefined is
2595 // considered equivalent to normal. But only if the
2596 // requested size is at least normal; otherwise, small
2597 // is better than the default.
2598 int mySL = (screenLayout & MASK_SCREENSIZE);
2599 int oSL = (o.screenLayout & MASK_SCREENSIZE);
2600 int fixedMySL = mySL;
2601 int fixedOSL = oSL;
2602 if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2603 if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2604 if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2605 }
2606 // For screen size, the best match is the one that is
2607 // closest to the requested screen size, but not over
2608 // (the not over part is dealt with in match() below).
2609 if (fixedMySL == fixedOSL) {
2610 // If the two are the same, but 'this' is actually
2611 // undefined, then the other is really a better match.
2612 if (mySL == 0) return false;
2613 return true;
2614 }
2615 if (fixedMySL != fixedOSL) {
2616 return fixedMySL > fixedOSL;
2617 }
2618 }
2619 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2620 && (requested->screenLayout & MASK_SCREENLONG)) {
2621 return (screenLayout & MASK_SCREENLONG);
2622 }
2623 }
2624
2625 if (screenLayout2 || o.screenLayout2) {
2626 if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0 &&
2627 (requested->screenLayout2 & MASK_SCREENROUND)) {
2628 return screenLayout2 & MASK_SCREENROUND;
2629 }
2630 }
2631
2632 if (colorMode || o.colorMode) {
2633 if (((colorMode^o.colorMode) & MASK_WIDE_COLOR_GAMUT) != 0 &&
2634 (requested->colorMode & MASK_WIDE_COLOR_GAMUT)) {
2635 return colorMode & MASK_WIDE_COLOR_GAMUT;
2636 }
2637 if (((colorMode^o.colorMode) & MASK_HDR) != 0 &&
2638 (requested->colorMode & MASK_HDR)) {
2639 return colorMode & MASK_HDR;
2640 }
2641 }
2642
2643 if ((orientation != o.orientation) && requested->orientation) {
2644 return (orientation);
2645 }
2646
2647 if (uiMode || o.uiMode) {
2648 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2649 && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2650 return (uiMode & MASK_UI_MODE_TYPE);
2651 }
2652 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2653 && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2654 return (uiMode & MASK_UI_MODE_NIGHT);
2655 }
2656 }
2657
2658 if (screenType || o.screenType) {
2659 if (density != o.density) {
2660 // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2661 const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2662 const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2663
2664 // We always prefer DENSITY_ANY over scaling a density bucket.
2665 if (thisDensity == ResTable_config::DENSITY_ANY) {
2666 return true;
2667 } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2668 return false;
2669 }
2670
2671 int requestedDensity = requested->density;
2672 if (requested->density == 0 ||
2673 requested->density == ResTable_config::DENSITY_ANY) {
2674 requestedDensity = ResTable_config::DENSITY_MEDIUM;
2675 }
2676
2677 // DENSITY_ANY is now dealt with. We should look to
2678 // pick a density bucket and potentially scale it.
2679 // Any density is potentially useful
2680 // because the system will scale it. Scaling down
2681 // is generally better than scaling up.
2682 int h = thisDensity;
2683 int l = otherDensity;
2684 bool bImBigger = true;
2685 if (l > h) {
2686 int t = h;
2687 h = l;
2688 l = t;
2689 bImBigger = false;
2690 }
2691
2692 if (requestedDensity >= h) {
2693 // requested value higher than both l and h, give h
2694 return bImBigger;
2695 }
2696 if (l >= requestedDensity) {
2697 // requested value lower than both l and h, give l
2698 return !bImBigger;
2699 }
2700 // saying that scaling down is 2x better than up
2701 if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2702 return !bImBigger;
2703 } else {
2704 return bImBigger;
2705 }
2706 }
2707
2708 if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2709 return (touchscreen);
2710 }
2711 }
2712
2713 if (input || o.input) {
2714 const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2715 const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2716 if (keysHidden != oKeysHidden) {
2717 const int reqKeysHidden =
2718 requested->inputFlags & MASK_KEYSHIDDEN;
2719 if (reqKeysHidden) {
2720
2721 if (!keysHidden) return false;
2722 if (!oKeysHidden) return true;
2723 // For compatibility, we count KEYSHIDDEN_NO as being
2724 // the same as KEYSHIDDEN_SOFT. Here we disambiguate
2725 // these by making an exact match more specific.
2726 if (reqKeysHidden == keysHidden) return true;
2727 if (reqKeysHidden == oKeysHidden) return false;
2728 }
2729 }
2730
2731 const int navHidden = inputFlags & MASK_NAVHIDDEN;
2732 const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2733 if (navHidden != oNavHidden) {
2734 const int reqNavHidden =
2735 requested->inputFlags & MASK_NAVHIDDEN;
2736 if (reqNavHidden) {
2737
2738 if (!navHidden) return false;
2739 if (!oNavHidden) return true;
2740 }
2741 }
2742
2743 if ((keyboard != o.keyboard) && requested->keyboard) {
2744 return (keyboard);
2745 }
2746
2747 if ((navigation != o.navigation) && requested->navigation) {
2748 return (navigation);
2749 }
2750 }
2751
2752 if (screenSize || o.screenSize) {
2753 // "Better" is based on the sum of the difference between both
2754 // width and height from the requested dimensions. We are
2755 // assuming the invalid configs (with smaller sizes) have
2756 // already been filtered. Note that if a particular dimension
2757 // is unspecified, we will end up with a large value (the
2758 // difference between 0 and the requested dimension), which is
2759 // good since we will prefer a config that has specified a
2760 // size value.
2761 int myDelta = 0, otherDelta = 0;
2762 if (requested->screenWidth) {
2763 myDelta += requested->screenWidth - screenWidth;
2764 otherDelta += requested->screenWidth - o.screenWidth;
2765 }
2766 if (requested->screenHeight) {
2767 myDelta += requested->screenHeight - screenHeight;
2768 otherDelta += requested->screenHeight - o.screenHeight;
2769 }
2770 if (myDelta != otherDelta) {
2771 return myDelta < otherDelta;
2772 }
2773 }
2774
2775 if (version || o.version) {
2776 if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2777 return (sdkVersion > o.sdkVersion);
2778 }
2779
2780 if ((minorVersion != o.minorVersion) &&
2781 requested->minorVersion) {
2782 return (minorVersion);
2783 }
2784 }
2785
2786 return false;
2787 }
2788 return isMoreSpecificThan(o);
2789 }
2790
match(const ResTable_config & settings) const2791 bool ResTable_config::match(const ResTable_config& settings) const {
2792 if (imsi != 0) {
2793 if (mcc != 0 && mcc != settings.mcc) {
2794 return false;
2795 }
2796 if (mnc != 0 && mnc != settings.mnc) {
2797 return false;
2798 }
2799 }
2800 if (locale != 0) {
2801 // Don't consider country and variants when deciding matches.
2802 // (Theoretically, the variant can also affect the script. For
2803 // example, "ar-alalc97" probably implies the Latin script, but since
2804 // CLDR doesn't support getting likely scripts for that, we'll assume
2805 // the variant doesn't change the script.)
2806 //
2807 // If two configs differ only in their country and variant,
2808 // they can be weeded out in the isMoreSpecificThan test.
2809 if (!langsAreEquivalent(language, settings.language)) {
2810 return false;
2811 }
2812
2813 // For backward compatibility and supporting private-use locales, we
2814 // fall back to old behavior if we couldn't determine the script for
2815 // either of the desired locale or the provided locale. But if we could determine
2816 // the scripts, they should be the same for the locales to match.
2817 bool countriesMustMatch = false;
2818 char computed_script[4];
2819 const char* script;
2820 if (settings.localeScript[0] == '\0') { // could not determine the request's script
2821 countriesMustMatch = true;
2822 } else {
2823 if (localeScript[0] == '\0' && !localeScriptWasComputed) {
2824 // script was not provided or computed, so we try to compute it
2825 localeDataComputeScript(computed_script, language, country);
2826 if (computed_script[0] == '\0') { // we could not compute the script
2827 countriesMustMatch = true;
2828 } else {
2829 script = computed_script;
2830 }
2831 } else { // script was provided, so just use it
2832 script = localeScript;
2833 }
2834 }
2835
2836 if (countriesMustMatch) {
2837 if (country[0] != '\0' && !areIdentical(country, settings.country)) {
2838 return false;
2839 }
2840 } else {
2841 if (memcmp(script, settings.localeScript, sizeof(settings.localeScript)) != 0) {
2842 return false;
2843 }
2844 }
2845 }
2846
2847 if (screenConfig != 0) {
2848 const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2849 const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2850 if (layoutDir != 0 && layoutDir != setLayoutDir) {
2851 return false;
2852 }
2853
2854 const int screenSize = screenLayout&MASK_SCREENSIZE;
2855 const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2856 // Any screen sizes for larger screens than the setting do not
2857 // match.
2858 if (screenSize != 0 && screenSize > setScreenSize) {
2859 return false;
2860 }
2861
2862 const int screenLong = screenLayout&MASK_SCREENLONG;
2863 const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2864 if (screenLong != 0 && screenLong != setScreenLong) {
2865 return false;
2866 }
2867
2868 const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2869 const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2870 if (uiModeType != 0 && uiModeType != setUiModeType) {
2871 return false;
2872 }
2873
2874 const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2875 const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2876 if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2877 return false;
2878 }
2879
2880 if (smallestScreenWidthDp != 0
2881 && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2882 return false;
2883 }
2884 }
2885
2886 if (screenConfig2 != 0) {
2887 const int screenRound = screenLayout2 & MASK_SCREENROUND;
2888 const int setScreenRound = settings.screenLayout2 & MASK_SCREENROUND;
2889 if (screenRound != 0 && screenRound != setScreenRound) {
2890 return false;
2891 }
2892
2893 const int hdr = colorMode & MASK_HDR;
2894 const int setHdr = settings.colorMode & MASK_HDR;
2895 if (hdr != 0 && hdr != setHdr) {
2896 return false;
2897 }
2898
2899 const int wideColorGamut = colorMode & MASK_WIDE_COLOR_GAMUT;
2900 const int setWideColorGamut = settings.colorMode & MASK_WIDE_COLOR_GAMUT;
2901 if (wideColorGamut != 0 && wideColorGamut != setWideColorGamut) {
2902 return false;
2903 }
2904 }
2905
2906 if (screenSizeDp != 0) {
2907 if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2908 if (kDebugTableSuperNoisy) {
2909 ALOGI("Filtering out width %d in requested %d", screenWidthDp,
2910 settings.screenWidthDp);
2911 }
2912 return false;
2913 }
2914 if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2915 if (kDebugTableSuperNoisy) {
2916 ALOGI("Filtering out height %d in requested %d", screenHeightDp,
2917 settings.screenHeightDp);
2918 }
2919 return false;
2920 }
2921 }
2922 if (screenType != 0) {
2923 if (orientation != 0 && orientation != settings.orientation) {
2924 return false;
2925 }
2926 // density always matches - we can scale it. See isBetterThan
2927 if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2928 return false;
2929 }
2930 }
2931 if (input != 0) {
2932 const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2933 const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2934 if (keysHidden != 0 && keysHidden != setKeysHidden) {
2935 // For compatibility, we count a request for KEYSHIDDEN_NO as also
2936 // matching the more recent KEYSHIDDEN_SOFT. Basically
2937 // KEYSHIDDEN_NO means there is some kind of keyboard available.
2938 if (kDebugTableSuperNoisy) {
2939 ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2940 }
2941 if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2942 if (kDebugTableSuperNoisy) {
2943 ALOGI("No match!");
2944 }
2945 return false;
2946 }
2947 }
2948 const int navHidden = inputFlags&MASK_NAVHIDDEN;
2949 const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2950 if (navHidden != 0 && navHidden != setNavHidden) {
2951 return false;
2952 }
2953 if (keyboard != 0 && keyboard != settings.keyboard) {
2954 return false;
2955 }
2956 if (navigation != 0 && navigation != settings.navigation) {
2957 return false;
2958 }
2959 }
2960 if (screenSize != 0) {
2961 if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2962 return false;
2963 }
2964 if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2965 return false;
2966 }
2967 }
2968 if (version != 0) {
2969 if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2970 return false;
2971 }
2972 if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2973 return false;
2974 }
2975 }
2976 return true;
2977 }
2978
appendDirLocale(String8 & out) const2979 void ResTable_config::appendDirLocale(String8& out) const {
2980 if (!language[0]) {
2981 return;
2982 }
2983 const bool scriptWasProvided = localeScript[0] != '\0' && !localeScriptWasComputed;
2984 if (!scriptWasProvided && !localeVariant[0] && !localeNumberingSystem[0]) {
2985 // Legacy format.
2986 if (out.size() > 0) {
2987 out.append("-");
2988 }
2989
2990 char buf[4];
2991 size_t len = unpackLanguage(buf);
2992 out.append(buf, len);
2993
2994 if (country[0]) {
2995 out.append("-r");
2996 len = unpackRegion(buf);
2997 out.append(buf, len);
2998 }
2999 return;
3000 }
3001
3002 // We are writing the modified BCP 47 tag.
3003 // It starts with 'b+' and uses '+' as a separator.
3004
3005 if (out.size() > 0) {
3006 out.append("-");
3007 }
3008 out.append("b+");
3009
3010 char buf[4];
3011 size_t len = unpackLanguage(buf);
3012 out.append(buf, len);
3013
3014 if (scriptWasProvided) {
3015 out.append("+");
3016 out.append(localeScript, sizeof(localeScript));
3017 }
3018
3019 if (country[0]) {
3020 out.append("+");
3021 len = unpackRegion(buf);
3022 out.append(buf, len);
3023 }
3024
3025 if (localeVariant[0]) {
3026 out.append("+");
3027 out.append(localeVariant, strnlen(localeVariant, sizeof(localeVariant)));
3028 }
3029
3030 if (localeNumberingSystem[0]) {
3031 out.append("+u+nu+");
3032 out.append(localeNumberingSystem,
3033 strnlen(localeNumberingSystem, sizeof(localeNumberingSystem)));
3034 }
3035 }
3036
getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN],bool canonicalize) const3037 void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN], bool canonicalize) const {
3038 memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
3039
3040 // This represents the "any" locale value, which has traditionally been
3041 // represented by the empty string.
3042 if (language[0] == '\0' && country[0] == '\0') {
3043 return;
3044 }
3045
3046 size_t charsWritten = 0;
3047 if (language[0] != '\0') {
3048 if (canonicalize && areIdentical(language, kTagalog)) {
3049 // Replace Tagalog with Filipino if we are canonicalizing
3050 str[0] = 'f'; str[1] = 'i'; str[2] = 'l'; str[3] = '\0'; // 3-letter code for Filipino
3051 charsWritten += 3;
3052 } else {
3053 charsWritten += unpackLanguage(str);
3054 }
3055 }
3056
3057 if (localeScript[0] != '\0' && !localeScriptWasComputed) {
3058 if (charsWritten > 0) {
3059 str[charsWritten++] = '-';
3060 }
3061 memcpy(str + charsWritten, localeScript, sizeof(localeScript));
3062 charsWritten += sizeof(localeScript);
3063 }
3064
3065 if (country[0] != '\0') {
3066 if (charsWritten > 0) {
3067 str[charsWritten++] = '-';
3068 }
3069 charsWritten += unpackRegion(str + charsWritten);
3070 }
3071
3072 if (localeVariant[0] != '\0') {
3073 if (charsWritten > 0) {
3074 str[charsWritten++] = '-';
3075 }
3076 memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
3077 charsWritten += strnlen(str + charsWritten, sizeof(localeVariant));
3078 }
3079
3080 // Add Unicode extension only if at least one other locale component is present
3081 if (localeNumberingSystem[0] != '\0' && charsWritten > 0) {
3082 static constexpr char NU_PREFIX[] = "-u-nu-";
3083 static constexpr size_t NU_PREFIX_LEN = sizeof(NU_PREFIX) - 1;
3084 memcpy(str + charsWritten, NU_PREFIX, NU_PREFIX_LEN);
3085 charsWritten += NU_PREFIX_LEN;
3086 memcpy(str + charsWritten, localeNumberingSystem, sizeof(localeNumberingSystem));
3087 }
3088 }
3089
3090 struct LocaleParserState {
3091 enum State : uint8_t {
3092 BASE, UNICODE_EXTENSION, IGNORE_THE_REST
3093 } parserState;
3094 enum UnicodeState : uint8_t {
3095 /* Initial state after the Unicode singleton is detected. Either a keyword
3096 * or an attribute is expected. */
3097 NO_KEY,
3098 /* Unicode extension key (but not attribute) is expected. Next states:
3099 * NO_KEY, IGNORE_KEY or NUMBERING_SYSTEM. */
3100 EXPECT_KEY,
3101 /* A key is detected, however it is not supported for now. Ignore its
3102 * value. Next states: IGNORE_KEY or NUMBERING_SYSTEM. */
3103 IGNORE_KEY,
3104 /* Numbering system key was detected. Store its value in the configuration
3105 * localeNumberingSystem field. Next state: EXPECT_KEY */
3106 NUMBERING_SYSTEM
3107 } unicodeState;
3108
LocaleParserStateandroid::LocaleParserState3109 LocaleParserState(): parserState(BASE), unicodeState(NO_KEY) {}
3110 };
3111
assignLocaleComponent(ResTable_config * config,const char * start,size_t size,LocaleParserState state)3112 /* static */ inline LocaleParserState assignLocaleComponent(ResTable_config* config,
3113 const char* start, size_t size, LocaleParserState state) {
3114
3115 /* It is assumed that this function is not invoked with state.parserState
3116 * set to IGNORE_THE_REST. The condition is checked by setBcp47Locale
3117 * function. */
3118
3119 if (state.parserState == LocaleParserState::UNICODE_EXTENSION) {
3120 switch (size) {
3121 case 1:
3122 /* Other BCP 47 extensions are not supported at the moment */
3123 state.parserState = LocaleParserState::IGNORE_THE_REST;
3124 break;
3125 case 2:
3126 if (state.unicodeState == LocaleParserState::NO_KEY ||
3127 state.unicodeState == LocaleParserState::EXPECT_KEY) {
3128 /* Analyze Unicode extension key. Currently only 'nu'
3129 * (numbering system) is supported.*/
3130 if ((start[0] == 'n' || start[0] == 'N') &&
3131 (start[1] == 'u' || start[1] == 'U')) {
3132 state.unicodeState = LocaleParserState::NUMBERING_SYSTEM;
3133 } else {
3134 state.unicodeState = LocaleParserState::IGNORE_KEY;
3135 }
3136 } else {
3137 /* Keys are not allowed in other state allowed, ignore the rest. */
3138 state.parserState = LocaleParserState::IGNORE_THE_REST;
3139 }
3140 break;
3141 case 3:
3142 case 4:
3143 case 5:
3144 case 6:
3145 case 7:
3146 case 8:
3147 switch (state.unicodeState) {
3148 case LocaleParserState::NUMBERING_SYSTEM:
3149 /* Accept only the first occurrence of the numbering system. */
3150 if (config->localeNumberingSystem[0] == '\0') {
3151 for (size_t i = 0; i < size; ++i) {
3152 config->localeNumberingSystem[i] = tolower(start[i]);
3153 }
3154 state.unicodeState = LocaleParserState::EXPECT_KEY;
3155 } else {
3156 state.parserState = LocaleParserState::IGNORE_THE_REST;
3157 }
3158 break;
3159 case LocaleParserState::IGNORE_KEY:
3160 /* Unsupported Unicode keyword. Ignore. */
3161 state.unicodeState = LocaleParserState::EXPECT_KEY;
3162 break;
3163 case LocaleParserState::EXPECT_KEY:
3164 /* A keyword followed by an attribute is not allowed. */
3165 state.parserState = LocaleParserState::IGNORE_THE_REST;
3166 break;
3167 case LocaleParserState::NO_KEY:
3168 /* Extension attribute. Do nothing. */
3169 break;
3170 default:
3171 break;
3172 }
3173 break;
3174 default:
3175 /* Unexpected field length - ignore the rest and treat as an error */
3176 state.parserState = LocaleParserState::IGNORE_THE_REST;
3177 }
3178 return state;
3179 }
3180
3181 switch (size) {
3182 case 0:
3183 state.parserState = LocaleParserState::IGNORE_THE_REST;
3184 break;
3185 case 1:
3186 state.parserState = (start[0] == 'u' || start[0] == 'U')
3187 ? LocaleParserState::UNICODE_EXTENSION
3188 : LocaleParserState::IGNORE_THE_REST;
3189 break;
3190 case 2:
3191 case 3:
3192 config->language[0] ? config->packRegion(start) : config->packLanguage(start);
3193 break;
3194 case 4:
3195 if ('0' <= start[0] && start[0] <= '9') {
3196 // this is a variant, so fall through
3197 } else {
3198 config->localeScript[0] = toupper(start[0]);
3199 for (size_t i = 1; i < 4; ++i) {
3200 config->localeScript[i] = tolower(start[i]);
3201 }
3202 break;
3203 }
3204 FALLTHROUGH_INTENDED;
3205 case 5:
3206 case 6:
3207 case 7:
3208 case 8:
3209 for (size_t i = 0; i < size; ++i) {
3210 config->localeVariant[i] = tolower(start[i]);
3211 }
3212 break;
3213 default:
3214 state.parserState = LocaleParserState::IGNORE_THE_REST;
3215 }
3216
3217 return state;
3218 }
3219
setBcp47Locale(const char * in)3220 void ResTable_config::setBcp47Locale(const char* in) {
3221 clearLocale();
3222
3223 const char* start = in;
3224 LocaleParserState state;
3225 while (const char* separator = strchr(start, '-')) {
3226 const size_t size = separator - start;
3227 state = assignLocaleComponent(this, start, size, state);
3228 if (state.parserState == LocaleParserState::IGNORE_THE_REST) {
3229 fprintf(stderr, "Invalid BCP-47 locale string: %s\n", in);
3230 break;
3231 }
3232 start = (separator + 1);
3233 }
3234
3235 if (state.parserState != LocaleParserState::IGNORE_THE_REST) {
3236 const size_t size = strlen(start);
3237 assignLocaleComponent(this, start, size, state);
3238 }
3239
3240 localeScriptWasComputed = (localeScript[0] == '\0');
3241 if (localeScriptWasComputed) {
3242 computeScript();
3243 }
3244 }
3245
toString() const3246 String8 ResTable_config::toString() const {
3247 String8 res;
3248
3249 if (mcc != 0) {
3250 if (res.size() > 0) res.append("-");
3251 res.appendFormat("mcc%d", dtohs(mcc));
3252 }
3253 if (mnc != 0) {
3254 if (res.size() > 0) res.append("-");
3255 res.appendFormat("mnc%d", dtohs(mnc));
3256 }
3257
3258 appendDirLocale(res);
3259
3260 if ((screenLayout&MASK_LAYOUTDIR) != 0) {
3261 if (res.size() > 0) res.append("-");
3262 switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
3263 case ResTable_config::LAYOUTDIR_LTR:
3264 res.append("ldltr");
3265 break;
3266 case ResTable_config::LAYOUTDIR_RTL:
3267 res.append("ldrtl");
3268 break;
3269 default:
3270 res.appendFormat("layoutDir=%d",
3271 dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
3272 break;
3273 }
3274 }
3275 if (smallestScreenWidthDp != 0) {
3276 if (res.size() > 0) res.append("-");
3277 res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
3278 }
3279 if (screenWidthDp != 0) {
3280 if (res.size() > 0) res.append("-");
3281 res.appendFormat("w%ddp", dtohs(screenWidthDp));
3282 }
3283 if (screenHeightDp != 0) {
3284 if (res.size() > 0) res.append("-");
3285 res.appendFormat("h%ddp", dtohs(screenHeightDp));
3286 }
3287 if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
3288 if (res.size() > 0) res.append("-");
3289 switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
3290 case ResTable_config::SCREENSIZE_SMALL:
3291 res.append("small");
3292 break;
3293 case ResTable_config::SCREENSIZE_NORMAL:
3294 res.append("normal");
3295 break;
3296 case ResTable_config::SCREENSIZE_LARGE:
3297 res.append("large");
3298 break;
3299 case ResTable_config::SCREENSIZE_XLARGE:
3300 res.append("xlarge");
3301 break;
3302 default:
3303 res.appendFormat("screenLayoutSize=%d",
3304 dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
3305 break;
3306 }
3307 }
3308 if ((screenLayout&MASK_SCREENLONG) != 0) {
3309 if (res.size() > 0) res.append("-");
3310 switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
3311 case ResTable_config::SCREENLONG_NO:
3312 res.append("notlong");
3313 break;
3314 case ResTable_config::SCREENLONG_YES:
3315 res.append("long");
3316 break;
3317 default:
3318 res.appendFormat("screenLayoutLong=%d",
3319 dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
3320 break;
3321 }
3322 }
3323 if ((screenLayout2&MASK_SCREENROUND) != 0) {
3324 if (res.size() > 0) res.append("-");
3325 switch (screenLayout2&MASK_SCREENROUND) {
3326 case SCREENROUND_NO:
3327 res.append("notround");
3328 break;
3329 case SCREENROUND_YES:
3330 res.append("round");
3331 break;
3332 default:
3333 res.appendFormat("screenRound=%d", dtohs(screenLayout2&MASK_SCREENROUND));
3334 break;
3335 }
3336 }
3337 if ((colorMode&MASK_WIDE_COLOR_GAMUT) != 0) {
3338 if (res.size() > 0) res.append("-");
3339 switch (colorMode&MASK_WIDE_COLOR_GAMUT) {
3340 case ResTable_config::WIDE_COLOR_GAMUT_NO:
3341 res.append("nowidecg");
3342 break;
3343 case ResTable_config::WIDE_COLOR_GAMUT_YES:
3344 res.append("widecg");
3345 break;
3346 default:
3347 res.appendFormat("wideColorGamut=%d", dtohs(colorMode&MASK_WIDE_COLOR_GAMUT));
3348 break;
3349 }
3350 }
3351 if ((colorMode&MASK_HDR) != 0) {
3352 if (res.size() > 0) res.append("-");
3353 switch (colorMode&MASK_HDR) {
3354 case ResTable_config::HDR_NO:
3355 res.append("lowdr");
3356 break;
3357 case ResTable_config::HDR_YES:
3358 res.append("highdr");
3359 break;
3360 default:
3361 res.appendFormat("hdr=%d", dtohs(colorMode&MASK_HDR));
3362 break;
3363 }
3364 }
3365 if (orientation != ORIENTATION_ANY) {
3366 if (res.size() > 0) res.append("-");
3367 switch (orientation) {
3368 case ResTable_config::ORIENTATION_PORT:
3369 res.append("port");
3370 break;
3371 case ResTable_config::ORIENTATION_LAND:
3372 res.append("land");
3373 break;
3374 case ResTable_config::ORIENTATION_SQUARE:
3375 res.append("square");
3376 break;
3377 default:
3378 res.appendFormat("orientation=%d", dtohs(orientation));
3379 break;
3380 }
3381 }
3382 if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
3383 if (res.size() > 0) res.append("-");
3384 switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
3385 case ResTable_config::UI_MODE_TYPE_DESK:
3386 res.append("desk");
3387 break;
3388 case ResTable_config::UI_MODE_TYPE_CAR:
3389 res.append("car");
3390 break;
3391 case ResTable_config::UI_MODE_TYPE_TELEVISION:
3392 res.append("television");
3393 break;
3394 case ResTable_config::UI_MODE_TYPE_APPLIANCE:
3395 res.append("appliance");
3396 break;
3397 case ResTable_config::UI_MODE_TYPE_WATCH:
3398 res.append("watch");
3399 break;
3400 case ResTable_config::UI_MODE_TYPE_VR_HEADSET:
3401 res.append("vrheadset");
3402 break;
3403 default:
3404 res.appendFormat("uiModeType=%d",
3405 dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
3406 break;
3407 }
3408 }
3409 if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
3410 if (res.size() > 0) res.append("-");
3411 switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
3412 case ResTable_config::UI_MODE_NIGHT_NO:
3413 res.append("notnight");
3414 break;
3415 case ResTable_config::UI_MODE_NIGHT_YES:
3416 res.append("night");
3417 break;
3418 default:
3419 res.appendFormat("uiModeNight=%d",
3420 dtohs(uiMode&MASK_UI_MODE_NIGHT));
3421 break;
3422 }
3423 }
3424 if (density != DENSITY_DEFAULT) {
3425 if (res.size() > 0) res.append("-");
3426 switch (density) {
3427 case ResTable_config::DENSITY_LOW:
3428 res.append("ldpi");
3429 break;
3430 case ResTable_config::DENSITY_MEDIUM:
3431 res.append("mdpi");
3432 break;
3433 case ResTable_config::DENSITY_TV:
3434 res.append("tvdpi");
3435 break;
3436 case ResTable_config::DENSITY_HIGH:
3437 res.append("hdpi");
3438 break;
3439 case ResTable_config::DENSITY_XHIGH:
3440 res.append("xhdpi");
3441 break;
3442 case ResTable_config::DENSITY_XXHIGH:
3443 res.append("xxhdpi");
3444 break;
3445 case ResTable_config::DENSITY_XXXHIGH:
3446 res.append("xxxhdpi");
3447 break;
3448 case ResTable_config::DENSITY_NONE:
3449 res.append("nodpi");
3450 break;
3451 case ResTable_config::DENSITY_ANY:
3452 res.append("anydpi");
3453 break;
3454 default:
3455 res.appendFormat("%ddpi", dtohs(density));
3456 break;
3457 }
3458 }
3459 if (touchscreen != TOUCHSCREEN_ANY) {
3460 if (res.size() > 0) res.append("-");
3461 switch (touchscreen) {
3462 case ResTable_config::TOUCHSCREEN_NOTOUCH:
3463 res.append("notouch");
3464 break;
3465 case ResTable_config::TOUCHSCREEN_FINGER:
3466 res.append("finger");
3467 break;
3468 case ResTable_config::TOUCHSCREEN_STYLUS:
3469 res.append("stylus");
3470 break;
3471 default:
3472 res.appendFormat("touchscreen=%d", dtohs(touchscreen));
3473 break;
3474 }
3475 }
3476 if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
3477 if (res.size() > 0) res.append("-");
3478 switch (inputFlags&MASK_KEYSHIDDEN) {
3479 case ResTable_config::KEYSHIDDEN_NO:
3480 res.append("keysexposed");
3481 break;
3482 case ResTable_config::KEYSHIDDEN_YES:
3483 res.append("keyshidden");
3484 break;
3485 case ResTable_config::KEYSHIDDEN_SOFT:
3486 res.append("keyssoft");
3487 break;
3488 }
3489 }
3490 if (keyboard != KEYBOARD_ANY) {
3491 if (res.size() > 0) res.append("-");
3492 switch (keyboard) {
3493 case ResTable_config::KEYBOARD_NOKEYS:
3494 res.append("nokeys");
3495 break;
3496 case ResTable_config::KEYBOARD_QWERTY:
3497 res.append("qwerty");
3498 break;
3499 case ResTable_config::KEYBOARD_12KEY:
3500 res.append("12key");
3501 break;
3502 default:
3503 res.appendFormat("keyboard=%d", dtohs(keyboard));
3504 break;
3505 }
3506 }
3507 if ((inputFlags&MASK_NAVHIDDEN) != 0) {
3508 if (res.size() > 0) res.append("-");
3509 switch (inputFlags&MASK_NAVHIDDEN) {
3510 case ResTable_config::NAVHIDDEN_NO:
3511 res.append("navexposed");
3512 break;
3513 case ResTable_config::NAVHIDDEN_YES:
3514 res.append("navhidden");
3515 break;
3516 default:
3517 res.appendFormat("inputFlagsNavHidden=%d",
3518 dtohs(inputFlags&MASK_NAVHIDDEN));
3519 break;
3520 }
3521 }
3522 if (navigation != NAVIGATION_ANY) {
3523 if (res.size() > 0) res.append("-");
3524 switch (navigation) {
3525 case ResTable_config::NAVIGATION_NONAV:
3526 res.append("nonav");
3527 break;
3528 case ResTable_config::NAVIGATION_DPAD:
3529 res.append("dpad");
3530 break;
3531 case ResTable_config::NAVIGATION_TRACKBALL:
3532 res.append("trackball");
3533 break;
3534 case ResTable_config::NAVIGATION_WHEEL:
3535 res.append("wheel");
3536 break;
3537 default:
3538 res.appendFormat("navigation=%d", dtohs(navigation));
3539 break;
3540 }
3541 }
3542 if (screenSize != 0) {
3543 if (res.size() > 0) res.append("-");
3544 res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
3545 }
3546 if (version != 0) {
3547 if (res.size() > 0) res.append("-");
3548 res.appendFormat("v%d", dtohs(sdkVersion));
3549 if (minorVersion != 0) {
3550 res.appendFormat(".%d", dtohs(minorVersion));
3551 }
3552 }
3553
3554 return res;
3555 }
3556
3557 // --------------------------------------------------------------------
3558 // --------------------------------------------------------------------
3559 // --------------------------------------------------------------------
3560
3561 struct ResTable::Header
3562 {
Headerandroid::ResTable::Header3563 explicit Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
3564 resourceIDMap(NULL), resourceIDMapSize(0) { }
3565
~Headerandroid::ResTable::Header3566 ~Header()
3567 {
3568 free(resourceIDMap);
3569 }
3570
3571 const ResTable* const owner;
3572 void* ownedData;
3573 const ResTable_header* header;
3574 size_t size;
3575 const uint8_t* dataEnd;
3576 size_t index;
3577 int32_t cookie;
3578
3579 ResStringPool values;
3580 uint32_t* resourceIDMap;
3581 size_t resourceIDMapSize;
3582 };
3583
3584 struct ResTable::Entry {
3585 ResTable_config config;
3586 const ResTable_entry* entry;
3587 const ResTable_type* type;
3588 uint32_t specFlags;
3589 const Package* package;
3590
3591 StringPoolRef typeStr;
3592 StringPoolRef keyStr;
3593 };
3594
3595 struct ResTable::Type
3596 {
Typeandroid::ResTable::Type3597 Type(const Header* _header, const Package* _package, size_t count)
3598 : header(_header), package(_package), entryCount(count),
3599 typeSpec(NULL), typeSpecFlags(NULL) { }
3600 const Header* const header;
3601 const Package* const package;
3602 const size_t entryCount;
3603 const ResTable_typeSpec* typeSpec;
3604 const uint32_t* typeSpecFlags;
3605 IdmapEntries idmapEntries;
3606 Vector<const ResTable_type*> configs;
3607 };
3608
3609 struct ResTable::Package
3610 {
Packageandroid::ResTable::Package3611 Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
3612 : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
3613 if (dtohs(package->header.headerSize) == sizeof(*package)) {
3614 // The package structure is the same size as the definition.
3615 // This means it contains the typeIdOffset field.
3616 typeIdOffset = package->typeIdOffset;
3617 }
3618 }
3619
3620 const ResTable* const owner;
3621 const Header* const header;
3622 const ResTable_package* const package;
3623
3624 ResStringPool typeStrings;
3625 ResStringPool keyStrings;
3626
3627 size_t typeIdOffset;
3628 bool definesOverlayable = false;
3629 };
3630
3631 // A group of objects describing a particular resource package.
3632 // The first in 'package' is always the root object (from the resource
3633 // table that defined the package); the ones after are skins on top of it.
3634 struct ResTable::PackageGroup
3635 {
PackageGroupandroid::ResTable::PackageGroup3636 PackageGroup(
3637 ResTable* _owner, const String16& _name, uint32_t _id,
3638 bool appAsLib, bool _isSystemAsset, bool _isDynamic)
3639 : owner(_owner)
3640 , name(_name)
3641 , id(_id)
3642 , largestTypeId(0)
3643 , dynamicRefTable(static_cast<uint8_t>(_id), appAsLib)
3644 , isSystemAsset(_isSystemAsset)
3645 , isDynamic(_isDynamic)
3646 { }
3647
~PackageGroupandroid::ResTable::PackageGroup3648 ~PackageGroup() {
3649 clearBagCache();
3650 const size_t numTypes = types.size();
3651 for (size_t i = 0; i < numTypes; i++) {
3652 TypeList& typeList = types.editItemAt(i);
3653 const size_t numInnerTypes = typeList.size();
3654 for (size_t j = 0; j < numInnerTypes; j++) {
3655 if (typeList[j]->package->owner == owner) {
3656 delete typeList[j];
3657 }
3658 }
3659 typeList.clear();
3660 }
3661
3662 const size_t N = packages.size();
3663 for (size_t i=0; i<N; i++) {
3664 Package* pkg = packages[i];
3665 if (pkg->owner == owner) {
3666 delete pkg;
3667 }
3668 }
3669 }
3670
3671 /**
3672 * Clear all cache related data that depends on parameters/configuration.
3673 * This includes the bag caches and filtered types.
3674 */
clearBagCacheandroid::ResTable::PackageGroup3675 void clearBagCache() {
3676 for (size_t i = 0; i < typeCacheEntries.size(); i++) {
3677 if (kDebugTableNoisy) {
3678 printf("type=%zu\n", i);
3679 }
3680 const TypeList& typeList = types[i];
3681 if (!typeList.isEmpty()) {
3682 TypeCacheEntry& cacheEntry = typeCacheEntries.editItemAt(i);
3683
3684 // Reset the filtered configurations.
3685 cacheEntry.filteredConfigs.clear();
3686
3687 bag_set** typeBags = cacheEntry.cachedBags;
3688 if (kDebugTableNoisy) {
3689 printf("typeBags=%p\n", typeBags);
3690 }
3691
3692 if (typeBags) {
3693 const size_t N = typeList[0]->entryCount;
3694 if (kDebugTableNoisy) {
3695 printf("type->entryCount=%zu\n", N);
3696 }
3697 for (size_t j = 0; j < N; j++) {
3698 if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF) {
3699 free(typeBags[j]);
3700 }
3701 }
3702 free(typeBags);
3703 cacheEntry.cachedBags = NULL;
3704 }
3705 }
3706 }
3707 }
3708
findType16android::ResTable::PackageGroup3709 ssize_t findType16(const char16_t* type, size_t len) const {
3710 const size_t N = packages.size();
3711 for (size_t i = 0; i < N; i++) {
3712 const base::expected<size_t, NullOrIOError> index =
3713 packages[i]->typeStrings.indexOfString(type, len);
3714 if (index.has_value()) {
3715 return *index + packages[i]->typeIdOffset;
3716 }
3717 }
3718 return -1;
3719 }
3720
3721 const ResTable* const owner;
3722 String16 const name;
3723 uint32_t const id;
3724
3725 // This is mainly used to keep track of the loaded packages
3726 // and to clean them up properly. Accessing resources happens from
3727 // the 'types' array.
3728 Vector<Package*> packages;
3729
3730 ByteBucketArray<TypeList> types;
3731
3732 uint8_t largestTypeId;
3733
3734 // Cached objects dependent on the parameters/configuration of this ResTable.
3735 // Gets cleared whenever the parameters/configuration changes.
3736 // These are stored here in a parallel structure because the data in `types` may
3737 // be shared by other ResTable's (framework resources are shared this way).
3738 ByteBucketArray<TypeCacheEntry> typeCacheEntries;
3739
3740 // The table mapping dynamic references to resolved references for
3741 // this package group.
3742 // TODO: We may be able to support dynamic references in overlays
3743 // by having these tables in a per-package scope rather than
3744 // per-package-group.
3745 DynamicRefTable dynamicRefTable;
3746
3747 // If the package group comes from a system asset. Used in
3748 // determining non-system locales.
3749 const bool isSystemAsset;
3750 const bool isDynamic;
3751 };
3752
Theme(const ResTable & table)3753 ResTable::Theme::Theme(const ResTable& table)
3754 : mTable(table)
3755 , mTypeSpecFlags(0)
3756 {
3757 memset(mPackages, 0, sizeof(mPackages));
3758 }
3759
~Theme()3760 ResTable::Theme::~Theme()
3761 {
3762 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3763 package_info* pi = mPackages[i];
3764 if (pi != NULL) {
3765 free_package(pi);
3766 }
3767 }
3768 }
3769
free_package(package_info * pi)3770 void ResTable::Theme::free_package(package_info* pi)
3771 {
3772 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3773 theme_entry* te = pi->types[j].entries;
3774 if (te != NULL) {
3775 free(te);
3776 }
3777 }
3778 free(pi);
3779 }
3780
copy_package(package_info * pi)3781 ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3782 {
3783 package_info* newpi = (package_info*)malloc(sizeof(package_info));
3784 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3785 size_t cnt = pi->types[j].numEntries;
3786 newpi->types[j].numEntries = cnt;
3787 theme_entry* te = pi->types[j].entries;
3788 size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3789 if (te != NULL && (cnt < 0xFFFFFFFF-1) && (cnt < cnt_max)) {
3790 theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3791 newpi->types[j].entries = newte;
3792 memcpy(newte, te, cnt*sizeof(theme_entry));
3793 } else {
3794 newpi->types[j].entries = NULL;
3795 }
3796 }
3797 return newpi;
3798 }
3799
applyStyle(uint32_t resID,bool force)3800 status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3801 {
3802 const bag_entry* bag;
3803 uint32_t bagTypeSpecFlags = 0;
3804 mTable.lock();
3805 const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3806 if (kDebugTableNoisy) {
3807 ALOGV("Applying style 0x%08x to theme %p, count=%zu", resID, this, N);
3808 }
3809 if (N < 0) {
3810 mTable.unlock();
3811 return N;
3812 }
3813
3814 mTypeSpecFlags |= bagTypeSpecFlags;
3815
3816 uint32_t curPackage = 0xffffffff;
3817 ssize_t curPackageIndex = 0;
3818 package_info* curPI = NULL;
3819 uint32_t curType = 0xffffffff;
3820 size_t numEntries = 0;
3821 theme_entry* curEntries = NULL;
3822
3823 const bag_entry* end = bag + N;
3824 while (bag < end) {
3825 const uint32_t attrRes = bag->map.name.ident;
3826 const uint32_t p = Res_GETPACKAGE(attrRes);
3827 const uint32_t t = Res_GETTYPE(attrRes);
3828 const uint32_t e = Res_GETENTRY(attrRes);
3829
3830 if (curPackage != p) {
3831 const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3832 if (pidx < 0) {
3833 ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3834 bag++;
3835 continue;
3836 }
3837 curPackage = p;
3838 curPackageIndex = pidx;
3839 curPI = mPackages[pidx];
3840 if (curPI == NULL) {
3841 curPI = (package_info*)malloc(sizeof(package_info));
3842 memset(curPI, 0, sizeof(*curPI));
3843 mPackages[pidx] = curPI;
3844 }
3845 curType = 0xffffffff;
3846 }
3847 if (curType != t) {
3848 if (t > Res_MAXTYPE) {
3849 ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3850 bag++;
3851 continue;
3852 }
3853 curType = t;
3854 curEntries = curPI->types[t].entries;
3855 if (curEntries == NULL) {
3856 PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3857 const TypeList& typeList = grp->types[t];
3858 size_t cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3859 size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3860 size_t buff_size = (cnt < cnt_max && cnt < 0xFFFFFFFF-1) ?
3861 cnt*sizeof(theme_entry) : 0;
3862 curEntries = (theme_entry*)malloc(buff_size);
3863 memset(curEntries, Res_value::TYPE_NULL, buff_size);
3864 curPI->types[t].numEntries = cnt;
3865 curPI->types[t].entries = curEntries;
3866 }
3867 numEntries = curPI->types[t].numEntries;
3868 }
3869 if (e >= numEntries) {
3870 ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3871 bag++;
3872 continue;
3873 }
3874 theme_entry* curEntry = curEntries + e;
3875 if (kDebugTableNoisy) {
3876 ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3877 attrRes, bag->map.value.dataType, bag->map.value.data,
3878 curEntry->value.dataType);
3879 }
3880 if (force || (curEntry->value.dataType == Res_value::TYPE_NULL
3881 && curEntry->value.data != Res_value::DATA_NULL_EMPTY)) {
3882 curEntry->stringBlock = bag->stringBlock;
3883 curEntry->typeSpecFlags |= bagTypeSpecFlags;
3884 curEntry->value = bag->map.value;
3885 }
3886
3887 bag++;
3888 }
3889
3890 mTable.unlock();
3891
3892 if (kDebugTableTheme) {
3893 ALOGI("Applying style 0x%08x (force=%d) theme %p...\n", resID, force, this);
3894 dumpToLog();
3895 }
3896
3897 return NO_ERROR;
3898 }
3899
setTo(const Theme & other)3900 status_t ResTable::Theme::setTo(const Theme& other)
3901 {
3902 if (kDebugTableTheme) {
3903 ALOGI("Setting theme %p from theme %p...\n", this, &other);
3904 dumpToLog();
3905 other.dumpToLog();
3906 }
3907
3908 if (&mTable == &other.mTable) {
3909 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3910 if (mPackages[i] != NULL) {
3911 free_package(mPackages[i]);
3912 }
3913 if (other.mPackages[i] != NULL) {
3914 mPackages[i] = copy_package(other.mPackages[i]);
3915 } else {
3916 mPackages[i] = NULL;
3917 }
3918 }
3919 } else {
3920 // @todo: need to really implement this, not just copy
3921 // the system package (which is still wrong because it isn't
3922 // fixing up resource references).
3923 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3924 if (mPackages[i] != NULL) {
3925 free_package(mPackages[i]);
3926 }
3927 if (i == 0 && other.mPackages[i] != NULL) {
3928 mPackages[i] = copy_package(other.mPackages[i]);
3929 } else {
3930 mPackages[i] = NULL;
3931 }
3932 }
3933 }
3934
3935 mTypeSpecFlags = other.mTypeSpecFlags;
3936
3937 if (kDebugTableTheme) {
3938 ALOGI("Final theme:");
3939 dumpToLog();
3940 }
3941
3942 return NO_ERROR;
3943 }
3944
clear()3945 status_t ResTable::Theme::clear()
3946 {
3947 if (kDebugTableTheme) {
3948 ALOGI("Clearing theme %p...\n", this);
3949 dumpToLog();
3950 }
3951
3952 for (size_t i = 0; i < Res_MAXPACKAGE; i++) {
3953 if (mPackages[i] != NULL) {
3954 free_package(mPackages[i]);
3955 mPackages[i] = NULL;
3956 }
3957 }
3958
3959 mTypeSpecFlags = 0;
3960
3961 if (kDebugTableTheme) {
3962 ALOGI("Final theme:");
3963 dumpToLog();
3964 }
3965
3966 return NO_ERROR;
3967 }
3968
getAttribute(uint32_t resID,Res_value * outValue,uint32_t * outTypeSpecFlags) const3969 ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3970 uint32_t* outTypeSpecFlags) const
3971 {
3972 int cnt = 20;
3973
3974 if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3975
3976 do {
3977 const ssize_t p = mTable.getResourcePackageIndex(resID);
3978 const uint32_t t = Res_GETTYPE(resID);
3979 const uint32_t e = Res_GETENTRY(resID);
3980
3981 if (kDebugTableTheme) {
3982 ALOGI("Looking up attr 0x%08x in theme %p", resID, this);
3983 }
3984
3985 if (p >= 0) {
3986 const package_info* const pi = mPackages[p];
3987 if (kDebugTableTheme) {
3988 ALOGI("Found package: %p", pi);
3989 }
3990 if (pi != NULL) {
3991 if (kDebugTableTheme) {
3992 ALOGI("Desired type index is %u in avail %zu", t, Res_MAXTYPE + 1);
3993 }
3994 if (t <= Res_MAXTYPE) {
3995 const type_info& ti = pi->types[t];
3996 if (kDebugTableTheme) {
3997 ALOGI("Desired entry index is %u in avail %zu", e, ti.numEntries);
3998 }
3999 if (e < ti.numEntries) {
4000 const theme_entry& te = ti.entries[e];
4001 if (outTypeSpecFlags != NULL) {
4002 *outTypeSpecFlags |= te.typeSpecFlags;
4003 }
4004 if (kDebugTableTheme) {
4005 ALOGI("Theme value: type=0x%x, data=0x%08x",
4006 te.value.dataType, te.value.data);
4007 }
4008 const uint8_t type = te.value.dataType;
4009 if (type == Res_value::TYPE_ATTRIBUTE) {
4010 if (cnt > 0) {
4011 cnt--;
4012 resID = te.value.data;
4013 continue;
4014 }
4015 ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
4016 return BAD_INDEX;
4017 } else if (type != Res_value::TYPE_NULL
4018 || te.value.data == Res_value::DATA_NULL_EMPTY) {
4019 *outValue = te.value;
4020 return te.stringBlock;
4021 }
4022 return BAD_INDEX;
4023 }
4024 }
4025 }
4026 }
4027 break;
4028
4029 } while (true);
4030
4031 return BAD_INDEX;
4032 }
4033
resolveAttributeReference(Res_value * inOutValue,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * inoutConfig) const4034 ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
4035 ssize_t blockIndex, uint32_t* outLastRef,
4036 uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
4037 {
4038 //printf("Resolving type=0x%x\n", inOutValue->dataType);
4039 if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
4040 uint32_t newTypeSpecFlags;
4041 blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
4042 if (kDebugTableTheme) {
4043 ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=0x%x\n",
4044 (int)blockIndex, (int)inOutValue->dataType, inOutValue->data);
4045 }
4046 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
4047 //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
4048 if (blockIndex < 0) {
4049 return blockIndex;
4050 }
4051 }
4052 return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
4053 inoutTypeSpecFlags, inoutConfig);
4054 }
4055
getChangingConfigurations() const4056 uint32_t ResTable::Theme::getChangingConfigurations() const
4057 {
4058 return mTypeSpecFlags;
4059 }
4060
dumpToLog() const4061 void ResTable::Theme::dumpToLog() const
4062 {
4063 ALOGI("Theme %p:\n", this);
4064 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
4065 package_info* pi = mPackages[i];
4066 if (pi == NULL) continue;
4067
4068 ALOGI(" Package #0x%02x:\n", (int)(i + 1));
4069 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
4070 type_info& ti = pi->types[j];
4071 if (ti.numEntries == 0) continue;
4072 ALOGI(" Type #0x%02x:\n", (int)(j + 1));
4073 for (size_t k = 0; k < ti.numEntries; k++) {
4074 const theme_entry& te = ti.entries[k];
4075 if (te.value.dataType == Res_value::TYPE_NULL) continue;
4076 ALOGI(" 0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
4077 (int)Res_MAKEID(i, j, k),
4078 te.value.dataType, (int)te.value.data, (int)te.stringBlock);
4079 }
4080 }
4081 }
4082 }
4083
ResTable()4084 ResTable::ResTable()
4085 : mError(NO_INIT), mNextPackageId(2)
4086 {
4087 memset(&mParams, 0, sizeof(mParams));
4088 memset(mPackageMap, 0, sizeof(mPackageMap));
4089 if (kDebugTableSuperNoisy) {
4090 ALOGI("Creating ResTable %p\n", this);
4091 }
4092 }
4093
ResTable(const void * data,size_t size,const int32_t cookie,bool copyData)4094 ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
4095 : mError(NO_INIT), mNextPackageId(2)
4096 {
4097 memset(&mParams, 0, sizeof(mParams));
4098 memset(mPackageMap, 0, sizeof(mPackageMap));
4099 addInternal(data, size, NULL, 0, false, cookie, copyData);
4100 LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
4101 if (kDebugTableSuperNoisy) {
4102 ALOGI("Creating ResTable %p\n", this);
4103 }
4104 }
4105
~ResTable()4106 ResTable::~ResTable()
4107 {
4108 if (kDebugTableSuperNoisy) {
4109 ALOGI("Destroying ResTable in %p\n", this);
4110 }
4111 uninit();
4112 }
4113
getResourcePackageIndex(uint32_t resID) const4114 inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
4115 {
4116 return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
4117 }
4118
getResourcePackageIndexFromPackage(uint8_t packageID) const4119 inline ssize_t ResTable::getResourcePackageIndexFromPackage(uint8_t packageID) const
4120 {
4121 return ((ssize_t)mPackageMap[packageID])-1;
4122 }
4123
add(const void * data,size_t size,const int32_t cookie,bool copyData)4124 status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
4125 return addInternal(data, size, NULL, 0, false, cookie, copyData);
4126 }
4127
add(const void * data,size_t size,const void * idmapData,size_t idmapDataSize,const int32_t cookie,bool copyData,bool appAsLib)4128 status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
4129 const int32_t cookie, bool copyData, bool appAsLib) {
4130 return addInternal(data, size, idmapData, idmapDataSize, appAsLib, cookie, copyData);
4131 }
4132
add(Asset * asset,const int32_t cookie,bool copyData)4133 status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
4134 const void* data = asset->getBuffer(true);
4135 if (data == NULL) {
4136 ALOGW("Unable to get buffer of resource asset file");
4137 return UNKNOWN_ERROR;
4138 }
4139
4140 return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, false, 0, cookie,
4141 copyData);
4142 }
4143
add(Asset * asset,Asset * idmapAsset,const int32_t cookie,bool copyData,bool appAsLib,bool isSystemAsset)4144 status_t ResTable::add(
4145 Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData,
4146 bool appAsLib, bool isSystemAsset) {
4147 const void* data = asset->getBuffer(true);
4148 if (data == NULL) {
4149 ALOGW("Unable to get buffer of resource asset file");
4150 return UNKNOWN_ERROR;
4151 }
4152
4153 size_t idmapSize = 0;
4154 const void* idmapData = NULL;
4155 if (idmapAsset != NULL) {
4156 idmapData = idmapAsset->getBuffer(true);
4157 if (idmapData == NULL) {
4158 ALOGW("Unable to get buffer of idmap asset file");
4159 return UNKNOWN_ERROR;
4160 }
4161 idmapSize = static_cast<size_t>(idmapAsset->getLength());
4162 }
4163
4164 return addInternal(data, static_cast<size_t>(asset->getLength()),
4165 idmapData, idmapSize, appAsLib, cookie, copyData, isSystemAsset);
4166 }
4167
add(ResTable * src,bool isSystemAsset)4168 status_t ResTable::add(ResTable* src, bool isSystemAsset)
4169 {
4170 mError = src->mError;
4171
4172 for (size_t i=0; i < src->mHeaders.size(); i++) {
4173 mHeaders.add(src->mHeaders[i]);
4174 }
4175
4176 for (size_t i=0; i < src->mPackageGroups.size(); i++) {
4177 PackageGroup* srcPg = src->mPackageGroups[i];
4178 PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id,
4179 false /* appAsLib */, isSystemAsset || srcPg->isSystemAsset, srcPg->isDynamic);
4180 for (size_t j=0; j<srcPg->packages.size(); j++) {
4181 pg->packages.add(srcPg->packages[j]);
4182 }
4183
4184 for (size_t j = 0; j < srcPg->types.size(); j++) {
4185 if (srcPg->types[j].isEmpty()) {
4186 continue;
4187 }
4188
4189 TypeList& typeList = pg->types.editItemAt(j);
4190 typeList.appendVector(srcPg->types[j]);
4191 }
4192 pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
4193 pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
4194 mPackageGroups.add(pg);
4195 }
4196
4197 memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
4198
4199 return mError;
4200 }
4201
addEmpty(const int32_t cookie)4202 status_t ResTable::addEmpty(const int32_t cookie) {
4203 Header* header = new Header(this);
4204 header->index = mHeaders.size();
4205 header->cookie = cookie;
4206 header->values.setToEmpty();
4207 header->ownedData = calloc(1, sizeof(ResTable_header));
4208
4209 ResTable_header* resHeader = (ResTable_header*) header->ownedData;
4210 resHeader->header.type = RES_TABLE_TYPE;
4211 resHeader->header.headerSize = sizeof(ResTable_header);
4212 resHeader->header.size = sizeof(ResTable_header);
4213
4214 header->header = (const ResTable_header*) resHeader;
4215 mHeaders.add(header);
4216 return (mError=NO_ERROR);
4217 }
4218
addInternal(const void * data,size_t dataSize,const void * idmapData,size_t idmapDataSize,bool appAsLib,const int32_t cookie,bool copyData,bool isSystemAsset)4219 status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
4220 bool appAsLib, const int32_t cookie, bool copyData, bool isSystemAsset)
4221 {
4222 if (!data) {
4223 return NO_ERROR;
4224 }
4225
4226 if (dataSize < sizeof(ResTable_header)) {
4227 ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
4228 (int) dataSize, (int) sizeof(ResTable_header));
4229 return UNKNOWN_ERROR;
4230 }
4231
4232 Header* header = new Header(this);
4233 header->index = mHeaders.size();
4234 header->cookie = cookie;
4235 if (idmapData != NULL) {
4236 header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
4237 if (header->resourceIDMap == NULL) {
4238 delete header;
4239 return (mError = NO_MEMORY);
4240 }
4241 memcpy(header->resourceIDMap, idmapData, idmapDataSize);
4242 header->resourceIDMapSize = idmapDataSize;
4243 }
4244 mHeaders.add(header);
4245
4246 const bool notDeviceEndian = htods(0xf0) != 0xf0;
4247
4248 if (kDebugLoadTableNoisy) {
4249 ALOGV("Adding resources to ResTable: data=%p, size=%zu, cookie=%d, copy=%d "
4250 "idmap=%p\n", data, dataSize, cookie, copyData, idmapData);
4251 }
4252
4253 if (copyData || notDeviceEndian) {
4254 header->ownedData = malloc(dataSize);
4255 if (header->ownedData == NULL) {
4256 return (mError=NO_MEMORY);
4257 }
4258 memcpy(header->ownedData, data, dataSize);
4259 data = header->ownedData;
4260 }
4261
4262 header->header = (const ResTable_header*)data;
4263 header->size = dtohl(header->header->header.size);
4264 if (kDebugLoadTableSuperNoisy) {
4265 ALOGI("Got size %zu, again size 0x%x, raw size 0x%x\n", header->size,
4266 dtohl(header->header->header.size), header->header->header.size);
4267 }
4268 if (kDebugLoadTableNoisy) {
4269 ALOGV("Loading ResTable @%p:\n", header->header);
4270 }
4271 if (dtohs(header->header->header.headerSize) > header->size
4272 || header->size > dataSize) {
4273 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
4274 (int)dtohs(header->header->header.headerSize),
4275 (int)header->size, (int)dataSize);
4276 return (mError=BAD_TYPE);
4277 }
4278 if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
4279 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
4280 (int)dtohs(header->header->header.headerSize),
4281 (int)header->size);
4282 return (mError=BAD_TYPE);
4283 }
4284 header->dataEnd = ((const uint8_t*)header->header) + header->size;
4285
4286 // Iterate through all chunks.
4287 size_t curPackage = 0;
4288
4289 const ResChunk_header* chunk =
4290 (const ResChunk_header*)(((const uint8_t*)header->header)
4291 + dtohs(header->header->header.headerSize));
4292 while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
4293 ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
4294 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
4295 if (err != NO_ERROR) {
4296 return (mError=err);
4297 }
4298 if (kDebugTableNoisy) {
4299 ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
4300 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
4301 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
4302 }
4303 const size_t csize = dtohl(chunk->size);
4304 const uint16_t ctype = dtohs(chunk->type);
4305 if (ctype == RES_STRING_POOL_TYPE) {
4306 if (header->values.getError() != NO_ERROR) {
4307 // Only use the first string chunk; ignore any others that
4308 // may appear.
4309 status_t err = header->values.setTo(chunk, csize);
4310 if (err != NO_ERROR) {
4311 return (mError=err);
4312 }
4313 } else {
4314 ALOGW("Multiple string chunks found in resource table.");
4315 }
4316 } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
4317 if (curPackage >= dtohl(header->header->packageCount)) {
4318 ALOGW("More package chunks were found than the %d declared in the header.",
4319 dtohl(header->header->packageCount));
4320 return (mError=BAD_TYPE);
4321 }
4322
4323 if (parsePackage(
4324 (ResTable_package*)chunk, header, appAsLib, isSystemAsset) != NO_ERROR) {
4325 return mError;
4326 }
4327 curPackage++;
4328 } else {
4329 ALOGW("Unknown chunk type 0x%x in table at %p.\n",
4330 ctype,
4331 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
4332 }
4333 chunk = (const ResChunk_header*)
4334 (((const uint8_t*)chunk) + csize);
4335 }
4336
4337 if (curPackage < dtohl(header->header->packageCount)) {
4338 ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
4339 (int)curPackage, dtohl(header->header->packageCount));
4340 return (mError=BAD_TYPE);
4341 }
4342 mError = header->values.getError();
4343 if (mError != NO_ERROR) {
4344 ALOGW("No string values found in resource table!");
4345 }
4346
4347 if (kDebugTableNoisy) {
4348 ALOGV("Returning from add with mError=%d\n", mError);
4349 }
4350 return mError;
4351 }
4352
getError() const4353 status_t ResTable::getError() const
4354 {
4355 return mError;
4356 }
4357
uninit()4358 void ResTable::uninit()
4359 {
4360 mError = NO_INIT;
4361 size_t N = mPackageGroups.size();
4362 for (size_t i=0; i<N; i++) {
4363 PackageGroup* g = mPackageGroups[i];
4364 delete g;
4365 }
4366 N = mHeaders.size();
4367 for (size_t i=0; i<N; i++) {
4368 Header* header = mHeaders[i];
4369 if (header->owner == this) {
4370 if (header->ownedData) {
4371 free(header->ownedData);
4372 }
4373 delete header;
4374 }
4375 }
4376
4377 mPackageGroups.clear();
4378 mHeaders.clear();
4379 }
4380
getResourceName(uint32_t resID,bool allowUtf8,resource_name * outName) const4381 bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
4382 {
4383 if (mError != NO_ERROR) {
4384 return false;
4385 }
4386
4387 const ssize_t p = getResourcePackageIndex(resID);
4388 const int t = Res_GETTYPE(resID);
4389 const int e = Res_GETENTRY(resID);
4390
4391 if (p < 0) {
4392 if (Res_GETPACKAGE(resID)+1 == 0) {
4393 ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
4394 } else {
4395 #ifndef STATIC_ANDROIDFW_FOR_TOOLS
4396 ALOGW("No known package when getting name for resource number 0x%08x", resID);
4397 #endif
4398 }
4399 return false;
4400 }
4401 if (t < 0) {
4402 ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
4403 return false;
4404 }
4405
4406 const PackageGroup* const grp = mPackageGroups[p];
4407 if (grp == NULL) {
4408 ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
4409 return false;
4410 }
4411
4412 Entry entry;
4413 status_t err = getEntry(grp, t, e, NULL, &entry);
4414 if (err != NO_ERROR) {
4415 return false;
4416 }
4417
4418 outName->package = grp->name.string();
4419 outName->packageLen = grp->name.size();
4420 if (allowUtf8) {
4421 outName->type8 = UnpackOptionalString(entry.typeStr.string8(), &outName->typeLen);
4422 outName->name8 = UnpackOptionalString(entry.keyStr.string8(), &outName->nameLen);
4423 } else {
4424 outName->type8 = NULL;
4425 outName->name8 = NULL;
4426 }
4427 if (outName->type8 == NULL) {
4428 outName->type = UnpackOptionalString(entry.typeStr.string16(), &outName->typeLen);
4429 // If we have a bad index for some reason, we should abort.
4430 if (outName->type == NULL) {
4431 return false;
4432 }
4433 }
4434 if (outName->name8 == NULL) {
4435 outName->name = UnpackOptionalString(entry.keyStr.string16(), &outName->nameLen);
4436 // If we have a bad index for some reason, we should abort.
4437 if (outName->name == NULL) {
4438 return false;
4439 }
4440 }
4441
4442 return true;
4443 }
4444
getResource(uint32_t resID,Res_value * outValue,bool mayBeBag,uint16_t density,uint32_t * outSpecFlags,ResTable_config * outConfig) const4445 ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
4446 uint32_t* outSpecFlags, ResTable_config* outConfig) const
4447 {
4448 if (mError != NO_ERROR) {
4449 return mError;
4450 }
4451
4452 const ssize_t p = getResourcePackageIndex(resID);
4453 const int t = Res_GETTYPE(resID);
4454 const int e = Res_GETENTRY(resID);
4455
4456 if (p < 0) {
4457 if (Res_GETPACKAGE(resID)+1 == 0) {
4458 ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
4459 } else {
4460 ALOGW("No known package when getting value for resource number 0x%08x", resID);
4461 }
4462 return BAD_INDEX;
4463 }
4464 if (t < 0) {
4465 ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
4466 return BAD_INDEX;
4467 }
4468
4469 const PackageGroup* const grp = mPackageGroups[p];
4470 if (grp == NULL) {
4471 ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
4472 return BAD_INDEX;
4473 }
4474
4475 // Allow overriding density
4476 ResTable_config desiredConfig = mParams;
4477 if (density > 0) {
4478 desiredConfig.density = density;
4479 }
4480
4481 Entry entry;
4482 status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
4483 if (err != NO_ERROR) {
4484 // Only log the failure when we're not running on the host as
4485 // part of a tool. The caller will do its own logging.
4486 #ifndef STATIC_ANDROIDFW_FOR_TOOLS
4487 ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
4488 resID, t, e, err);
4489 #endif
4490 return err;
4491 }
4492
4493 if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
4494 if (!mayBeBag) {
4495 ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
4496 }
4497 return BAD_VALUE;
4498 }
4499
4500 const Res_value* value = reinterpret_cast<const Res_value*>(
4501 reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
4502
4503 outValue->size = dtohs(value->size);
4504 outValue->res0 = value->res0;
4505 outValue->dataType = value->dataType;
4506 outValue->data = dtohl(value->data);
4507
4508 // The reference may be pointing to a resource in a shared library. These
4509 // references have build-time generated package IDs. These ids may not match
4510 // the actual package IDs of the corresponding packages in this ResTable.
4511 // We need to fix the package ID based on a mapping.
4512 if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
4513 ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
4514 return BAD_VALUE;
4515 }
4516
4517 if (kDebugTableNoisy) {
4518 size_t len;
4519 printf("Found value: pkg=%zu, type=%d, str=%s, int=%d\n",
4520 entry.package->header->index,
4521 outValue->dataType,
4522 outValue->dataType == Res_value::TYPE_STRING ?
4523 String8(UnpackOptionalString(
4524 entry.package->header->values.stringAt(outValue->data), &len)).string() :
4525 "",
4526 outValue->data);
4527 }
4528
4529 if (outSpecFlags != NULL) {
4530 *outSpecFlags = entry.specFlags;
4531 }
4532
4533 if (outConfig != NULL) {
4534 *outConfig = entry.config;
4535 }
4536
4537 return entry.package->header->index;
4538 }
4539
resolveReference(Res_value * value,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * outConfig) const4540 ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
4541 uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
4542 ResTable_config* outConfig) const
4543 {
4544 int count=0;
4545 while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
4546 && value->data != 0 && count < 20) {
4547 if (outLastRef) *outLastRef = value->data;
4548 uint32_t newFlags = 0;
4549 const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
4550 outConfig);
4551 if (newIndex == BAD_INDEX) {
4552 return BAD_INDEX;
4553 }
4554 if (kDebugTableTheme) {
4555 ALOGI("Resolving reference 0x%x: newIndex=%d, type=0x%x, data=0x%x\n",
4556 value->data, (int)newIndex, (int)value->dataType, value->data);
4557 }
4558 //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
4559 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
4560 if (newIndex < 0) {
4561 // This can fail if the resource being referenced is a style...
4562 // in this case, just return the reference, and expect the
4563 // caller to deal with.
4564 return blockIndex;
4565 }
4566 blockIndex = newIndex;
4567 count++;
4568 }
4569 return blockIndex;
4570 }
4571
valueToString(const Res_value * value,size_t stringBlock,char16_t[TMP_BUFFER_SIZE],size_t * outLen) const4572 const char16_t* ResTable::valueToString(
4573 const Res_value* value, size_t stringBlock,
4574 char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
4575 {
4576 if (!value) {
4577 return NULL;
4578 }
4579 if (value->dataType == value->TYPE_STRING) {
4580 return UnpackOptionalString(getTableStringBlock(stringBlock)->stringAt(value->data),
4581 outLen);
4582 }
4583 // XXX do int to string conversions.
4584 return NULL;
4585 }
4586
lockBag(uint32_t resID,const bag_entry ** outBag) const4587 ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
4588 {
4589 mLock.lock();
4590 ssize_t err = getBagLocked(resID, outBag);
4591 if (err < NO_ERROR) {
4592 //printf("*** get failed! unlocking\n");
4593 mLock.unlock();
4594 }
4595 return err;
4596 }
4597
unlockBag(const bag_entry *) const4598 void ResTable::unlockBag(const bag_entry* /*bag*/) const
4599 {
4600 //printf("<<< unlockBag %p\n", this);
4601 mLock.unlock();
4602 }
4603
lock() const4604 void ResTable::lock() const
4605 {
4606 mLock.lock();
4607 }
4608
unlock() const4609 void ResTable::unlock() const
4610 {
4611 mLock.unlock();
4612 }
4613
getBagLocked(uint32_t resID,const bag_entry ** outBag,uint32_t * outTypeSpecFlags) const4614 ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
4615 uint32_t* outTypeSpecFlags) const
4616 {
4617 if (mError != NO_ERROR) {
4618 return mError;
4619 }
4620
4621 const ssize_t p = getResourcePackageIndex(resID);
4622 const int t = Res_GETTYPE(resID);
4623 const int e = Res_GETENTRY(resID);
4624
4625 if (p < 0) {
4626 ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
4627 return BAD_INDEX;
4628 }
4629 if (t < 0) {
4630 ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
4631 return BAD_INDEX;
4632 }
4633
4634 //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
4635 PackageGroup* const grp = mPackageGroups[p];
4636 if (grp == NULL) {
4637 ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
4638 return BAD_INDEX;
4639 }
4640
4641 const TypeList& typeConfigs = grp->types[t];
4642 if (typeConfigs.isEmpty()) {
4643 ALOGW("Type identifier 0x%x does not exist.", t+1);
4644 return BAD_INDEX;
4645 }
4646
4647 const size_t NENTRY = typeConfigs[0]->entryCount;
4648 if (e >= (int)NENTRY) {
4649 ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
4650 e, (int)typeConfigs[0]->entryCount);
4651 return BAD_INDEX;
4652 }
4653
4654 // First see if we've already computed this bag...
4655 TypeCacheEntry& cacheEntry = grp->typeCacheEntries.editItemAt(t);
4656 bag_set** typeSet = cacheEntry.cachedBags;
4657 if (typeSet) {
4658 bag_set* set = typeSet[e];
4659 if (set) {
4660 if (set != (bag_set*)0xFFFFFFFF) {
4661 if (outTypeSpecFlags != NULL) {
4662 *outTypeSpecFlags = set->typeSpecFlags;
4663 }
4664 *outBag = (bag_entry*)(set+1);
4665 if (kDebugTableSuperNoisy) {
4666 ALOGI("Found existing bag for: 0x%x\n", resID);
4667 }
4668 return set->numAttrs;
4669 }
4670 ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
4671 resID);
4672 return BAD_INDEX;
4673 }
4674 }
4675
4676 // Bag not found, we need to compute it!
4677 if (!typeSet) {
4678 typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
4679 if (!typeSet) return NO_MEMORY;
4680 cacheEntry.cachedBags = typeSet;
4681 }
4682
4683 // Mark that we are currently working on this one.
4684 typeSet[e] = (bag_set*)0xFFFFFFFF;
4685
4686 if (kDebugTableNoisy) {
4687 ALOGI("Building bag: %x\n", resID);
4688 }
4689
4690 // Now collect all bag attributes
4691 Entry entry;
4692 status_t err = getEntry(grp, t, e, &mParams, &entry);
4693 if (err != NO_ERROR) {
4694 return err;
4695 }
4696
4697 const uint16_t entrySize = dtohs(entry.entry->size);
4698 const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
4699 ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
4700 const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
4701 ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
4702
4703 size_t N = count;
4704
4705 if (kDebugTableNoisy) {
4706 ALOGI("Found map: size=%x parent=%x count=%d\n", entrySize, parent, count);
4707
4708 // If this map inherits from another, we need to start
4709 // with its parent's values. Otherwise start out empty.
4710 ALOGI("Creating new bag, entrySize=0x%08x, parent=0x%08x\n", entrySize, parent);
4711 }
4712
4713 // This is what we are building.
4714 bag_set* set = NULL;
4715
4716 if (parent) {
4717 uint32_t resolvedParent = parent;
4718
4719 // Bags encode a parent reference without using the standard
4720 // Res_value structure. That means we must always try to
4721 // resolve a parent reference in case it is actually a
4722 // TYPE_DYNAMIC_REFERENCE.
4723 status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
4724 if (err != NO_ERROR) {
4725 ALOGE("Failed resolving bag parent id 0x%08x", parent);
4726 return UNKNOWN_ERROR;
4727 }
4728
4729 const bag_entry* parentBag;
4730 uint32_t parentTypeSpecFlags = 0;
4731 const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
4732 const size_t NT = ((NP >= 0) ? NP : 0) + N;
4733 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
4734 if (set == NULL) {
4735 return NO_MEMORY;
4736 }
4737 if (NP > 0) {
4738 memcpy(set+1, parentBag, NP*sizeof(bag_entry));
4739 set->numAttrs = NP;
4740 if (kDebugTableNoisy) {
4741 ALOGI("Initialized new bag with %zd inherited attributes.\n", NP);
4742 }
4743 } else {
4744 if (kDebugTableNoisy) {
4745 ALOGI("Initialized new bag with no inherited attributes.\n");
4746 }
4747 set->numAttrs = 0;
4748 }
4749 set->availAttrs = NT;
4750 set->typeSpecFlags = parentTypeSpecFlags;
4751 } else {
4752 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
4753 if (set == NULL) {
4754 return NO_MEMORY;
4755 }
4756 set->numAttrs = 0;
4757 set->availAttrs = N;
4758 set->typeSpecFlags = 0;
4759 }
4760
4761 set->typeSpecFlags |= entry.specFlags;
4762
4763 // Now merge in the new attributes...
4764 size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
4765 + dtohs(entry.entry->size);
4766 const ResTable_map* map;
4767 bag_entry* entries = (bag_entry*)(set+1);
4768 size_t curEntry = 0;
4769 uint32_t pos = 0;
4770 if (kDebugTableNoisy) {
4771 ALOGI("Starting with set %p, entries=%p, avail=%zu\n", set, entries, set->availAttrs);
4772 }
4773 while (pos < count) {
4774 if (kDebugTableNoisy) {
4775 ALOGI("Now at %p\n", (void*)curOff);
4776 }
4777
4778 if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
4779 ALOGW("ResTable_map at %d is beyond type chunk data %d",
4780 (int)curOff, dtohl(entry.type->header.size));
4781 free(set);
4782 return BAD_TYPE;
4783 }
4784 map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
4785 N++;
4786
4787 uint32_t newName = htodl(map->name.ident);
4788 if (!Res_INTERNALID(newName)) {
4789 // Attributes don't have a resource id as the name. They specify
4790 // other data, which would be wrong to change via a lookup.
4791 if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
4792 ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
4793 (int) curOff, (int) newName);
4794 free(set);
4795 return UNKNOWN_ERROR;
4796 }
4797 }
4798
4799 bool isInside;
4800 uint32_t oldName = 0;
4801 while ((isInside=(curEntry < set->numAttrs))
4802 && (oldName=entries[curEntry].map.name.ident) < newName) {
4803 if (kDebugTableNoisy) {
4804 ALOGI("#%zu: Keeping existing attribute: 0x%08x\n",
4805 curEntry, entries[curEntry].map.name.ident);
4806 }
4807 curEntry++;
4808 }
4809
4810 if ((!isInside) || oldName != newName) {
4811 // This is a new attribute... figure out what to do with it.
4812 if (set->numAttrs >= set->availAttrs) {
4813 // Need to alloc more memory...
4814 const size_t newAvail = set->availAttrs+N;
4815 void *oldSet = set;
4816 set = (bag_set*)realloc(set,
4817 sizeof(bag_set)
4818 + sizeof(bag_entry)*newAvail);
4819 if (set == NULL) {
4820 free(oldSet);
4821 return NO_MEMORY;
4822 }
4823 set->availAttrs = newAvail;
4824 entries = (bag_entry*)(set+1);
4825 if (kDebugTableNoisy) {
4826 ALOGI("Reallocated set %p, entries=%p, avail=%zu\n",
4827 set, entries, set->availAttrs);
4828 }
4829 }
4830 if (isInside) {
4831 // Going in the middle, need to make space.
4832 memmove(entries+curEntry+1, entries+curEntry,
4833 sizeof(bag_entry)*(set->numAttrs-curEntry));
4834 set->numAttrs++;
4835 }
4836 if (kDebugTableNoisy) {
4837 ALOGI("#%zu: Inserting new attribute: 0x%08x\n", curEntry, newName);
4838 }
4839 } else {
4840 if (kDebugTableNoisy) {
4841 ALOGI("#%zu: Replacing existing attribute: 0x%08x\n", curEntry, oldName);
4842 }
4843 }
4844
4845 bag_entry* cur = entries+curEntry;
4846
4847 cur->stringBlock = entry.package->header->index;
4848 cur->map.name.ident = newName;
4849 cur->map.value.copyFrom_dtoh(map->value);
4850 status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
4851 if (err != NO_ERROR) {
4852 ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
4853 return UNKNOWN_ERROR;
4854 }
4855
4856 if (kDebugTableNoisy) {
4857 ALOGI("Setting entry #%zu %p: block=%zd, name=0x%08d, type=%d, data=0x%08x\n",
4858 curEntry, cur, cur->stringBlock, cur->map.name.ident,
4859 cur->map.value.dataType, cur->map.value.data);
4860 }
4861
4862 // On to the next!
4863 curEntry++;
4864 pos++;
4865 const size_t size = dtohs(map->value.size);
4866 curOff += size + sizeof(*map)-sizeof(map->value);
4867 }
4868
4869 if (curEntry > set->numAttrs) {
4870 set->numAttrs = curEntry;
4871 }
4872
4873 // And this is it...
4874 typeSet[e] = set;
4875 if (set) {
4876 if (outTypeSpecFlags != NULL) {
4877 *outTypeSpecFlags = set->typeSpecFlags;
4878 }
4879 *outBag = (bag_entry*)(set+1);
4880 if (kDebugTableNoisy) {
4881 ALOGI("Returning %zu attrs\n", set->numAttrs);
4882 }
4883 return set->numAttrs;
4884 }
4885 return BAD_INDEX;
4886 }
4887
setParameters(const ResTable_config * params)4888 void ResTable::setParameters(const ResTable_config* params)
4889 {
4890 AutoMutex _lock(mLock);
4891 AutoMutex _lock2(mFilteredConfigLock);
4892
4893 if (kDebugTableGetEntry) {
4894 ALOGI("Setting parameters: %s\n", params->toString().string());
4895 }
4896 mParams = *params;
4897 for (size_t p = 0; p < mPackageGroups.size(); p++) {
4898 PackageGroup* packageGroup = mPackageGroups.editItemAt(p);
4899 if (kDebugTableNoisy) {
4900 ALOGI("CLEARING BAGS FOR GROUP %zu!", p);
4901 }
4902 packageGroup->clearBagCache();
4903
4904 // Find which configurations match the set of parameters. This allows for a much
4905 // faster lookup in Lookup() if the set of values is narrowed down.
4906 for (size_t t = 0; t < packageGroup->types.size(); t++) {
4907 if (packageGroup->types[t].isEmpty()) {
4908 continue;
4909 }
4910
4911 TypeList& typeList = packageGroup->types.editItemAt(t);
4912
4913 // Retrieve the cache entry for this type.
4914 TypeCacheEntry& cacheEntry = packageGroup->typeCacheEntries.editItemAt(t);
4915
4916 for (size_t ts = 0; ts < typeList.size(); ts++) {
4917 Type* type = typeList.editItemAt(ts);
4918
4919 std::shared_ptr<Vector<const ResTable_type*>> newFilteredConfigs =
4920 std::make_shared<Vector<const ResTable_type*>>();
4921
4922 for (size_t ti = 0; ti < type->configs.size(); ti++) {
4923 ResTable_config config;
4924 config.copyFromDtoH(type->configs[ti]->config);
4925
4926 if (config.match(mParams)) {
4927 newFilteredConfigs->add(type->configs[ti]);
4928 }
4929 }
4930
4931 if (kDebugTableNoisy) {
4932 ALOGD("Updating pkg=%zu type=%zu with %zu filtered configs",
4933 p, t, newFilteredConfigs->size());
4934 }
4935
4936 cacheEntry.filteredConfigs.add(newFilteredConfigs);
4937 }
4938 }
4939 }
4940 }
4941
getParameters(ResTable_config * params) const4942 void ResTable::getParameters(ResTable_config* params) const
4943 {
4944 mLock.lock();
4945 *params = mParams;
4946 mLock.unlock();
4947 }
4948
4949 struct id_name_map {
4950 uint32_t id;
4951 size_t len;
4952 char16_t name[6];
4953 };
4954
4955 const static id_name_map ID_NAMES[] = {
4956 { ResTable_map::ATTR_TYPE, 5, { '^', 't', 'y', 'p', 'e' } },
4957 { ResTable_map::ATTR_L10N, 5, { '^', 'l', '1', '0', 'n' } },
4958 { ResTable_map::ATTR_MIN, 4, { '^', 'm', 'i', 'n' } },
4959 { ResTable_map::ATTR_MAX, 4, { '^', 'm', 'a', 'x' } },
4960 { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4961 { ResTable_map::ATTR_ZERO, 5, { '^', 'z', 'e', 'r', 'o' } },
4962 { ResTable_map::ATTR_ONE, 4, { '^', 'o', 'n', 'e' } },
4963 { ResTable_map::ATTR_TWO, 4, { '^', 't', 'w', 'o' } },
4964 { ResTable_map::ATTR_FEW, 4, { '^', 'f', 'e', 'w' } },
4965 { ResTable_map::ATTR_MANY, 5, { '^', 'm', 'a', 'n', 'y' } },
4966 };
4967
identifierForName(const char16_t * name,size_t nameLen,const char16_t * type,size_t typeLen,const char16_t * package,size_t packageLen,uint32_t * outTypeSpecFlags) const4968 uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4969 const char16_t* type, size_t typeLen,
4970 const char16_t* package,
4971 size_t packageLen,
4972 uint32_t* outTypeSpecFlags) const
4973 {
4974 if (kDebugTableSuperNoisy) {
4975 printf("Identifier for name: error=%d\n", mError);
4976 }
4977
4978 // Check for internal resource identifier as the very first thing, so
4979 // that we will always find them even when there are no resources.
4980 if (name[0] == '^') {
4981 const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4982 size_t len;
4983 for (int i=0; i<N; i++) {
4984 const id_name_map* m = ID_NAMES + i;
4985 len = m->len;
4986 if (len != nameLen) {
4987 continue;
4988 }
4989 for (size_t j=1; j<len; j++) {
4990 if (m->name[j] != name[j]) {
4991 goto nope;
4992 }
4993 }
4994 if (outTypeSpecFlags) {
4995 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4996 }
4997 return m->id;
4998 nope:
4999 ;
5000 }
5001 if (nameLen > 7) {
5002 if (name[1] == 'i' && name[2] == 'n'
5003 && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
5004 && name[6] == '_') {
5005 int index = atoi(String8(name + 7, nameLen - 7).string());
5006 if (Res_CHECKID(index)) {
5007 ALOGW("Array resource index: %d is too large.",
5008 index);
5009 return 0;
5010 }
5011 if (outTypeSpecFlags) {
5012 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
5013 }
5014 return Res_MAKEARRAY(index);
5015 }
5016 }
5017 return 0;
5018 }
5019
5020 if (mError != NO_ERROR) {
5021 return 0;
5022 }
5023
5024 bool fakePublic = false;
5025
5026 // Figure out the package and type we are looking in...
5027
5028 const char16_t* packageEnd = NULL;
5029 const char16_t* typeEnd = NULL;
5030 const char16_t* const nameEnd = name+nameLen;
5031 const char16_t* p = name;
5032 while (p < nameEnd) {
5033 if (*p == ':') packageEnd = p;
5034 else if (*p == '/') typeEnd = p;
5035 p++;
5036 }
5037 if (*name == '@') {
5038 name++;
5039 if (*name == '*') {
5040 fakePublic = true;
5041 name++;
5042 }
5043 }
5044 if (name >= nameEnd) {
5045 return 0;
5046 }
5047
5048 if (packageEnd) {
5049 package = name;
5050 packageLen = packageEnd-name;
5051 name = packageEnd+1;
5052 } else if (!package) {
5053 return 0;
5054 }
5055
5056 if (typeEnd) {
5057 type = name;
5058 typeLen = typeEnd-name;
5059 name = typeEnd+1;
5060 } else if (!type) {
5061 return 0;
5062 }
5063
5064 if (name >= nameEnd) {
5065 return 0;
5066 }
5067 nameLen = nameEnd-name;
5068
5069 if (kDebugTableNoisy) {
5070 printf("Looking for identifier: type=%s, name=%s, package=%s\n",
5071 String8(type, typeLen).string(),
5072 String8(name, nameLen).string(),
5073 String8(package, packageLen).string());
5074 }
5075
5076 const String16 attr("attr");
5077 const String16 attrPrivate("^attr-private");
5078
5079 const size_t NG = mPackageGroups.size();
5080 for (size_t ig=0; ig<NG; ig++) {
5081 const PackageGroup* group = mPackageGroups[ig];
5082
5083 if (strzcmp16(package, packageLen,
5084 group->name.string(), group->name.size())) {
5085 if (kDebugTableNoisy) {
5086 printf("Skipping package group: %s\n", String8(group->name).string());
5087 }
5088 continue;
5089 }
5090
5091 const size_t packageCount = group->packages.size();
5092 for (size_t pi = 0; pi < packageCount; pi++) {
5093 const char16_t* targetType = type;
5094 size_t targetTypeLen = typeLen;
5095
5096 do {
5097 auto ti = group->packages[pi]->typeStrings.indexOfString(targetType, targetTypeLen);
5098 if (!ti.has_value()) {
5099 continue;
5100 }
5101
5102 *ti += group->packages[pi]->typeIdOffset;
5103 const uint32_t identifier = findEntry(group, *ti, name, nameLen,
5104 outTypeSpecFlags);
5105 if (identifier != 0) {
5106 if (fakePublic && outTypeSpecFlags) {
5107 *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
5108 }
5109 return identifier;
5110 }
5111 } while (strzcmp16(attr.string(), attr.size(), targetType, targetTypeLen) == 0
5112 && (targetType = attrPrivate.string())
5113 && (targetTypeLen = attrPrivate.size())
5114 );
5115 }
5116 }
5117 return 0;
5118 }
5119
findEntry(const PackageGroup * group,ssize_t typeIndex,const char16_t * name,size_t nameLen,uint32_t * outTypeSpecFlags) const5120 uint32_t ResTable::findEntry(const PackageGroup* group, ssize_t typeIndex, const char16_t* name,
5121 size_t nameLen, uint32_t* outTypeSpecFlags) const {
5122 const TypeList& typeList = group->types[typeIndex];
5123 const size_t typeCount = typeList.size();
5124 for (size_t i = 0; i < typeCount; i++) {
5125 const Type* t = typeList[i];
5126 const base::expected<size_t, NullOrIOError> ei =
5127 t->package->keyStrings.indexOfString(name, nameLen);
5128 if (!ei.has_value()) {
5129 continue;
5130 }
5131
5132 const size_t configCount = t->configs.size();
5133 for (size_t j = 0; j < configCount; j++) {
5134 const TypeVariant tv(t->configs[j]);
5135 for (TypeVariant::iterator iter = tv.beginEntries();
5136 iter != tv.endEntries();
5137 iter++) {
5138 const ResTable_entry* entry = *iter;
5139 if (entry == NULL) {
5140 continue;
5141 }
5142
5143 if (dtohl(entry->key.index) == (size_t) *ei) {
5144 uint32_t resId = Res_MAKEID(group->id - 1, typeIndex, iter.index());
5145 if (outTypeSpecFlags) {
5146 Entry result;
5147 if (getEntry(group, typeIndex, iter.index(), NULL, &result) != NO_ERROR) {
5148 ALOGW("Failed to find spec flags for 0x%08x", resId);
5149 return 0;
5150 }
5151 *outTypeSpecFlags = result.specFlags;
5152 }
5153 return resId;
5154 }
5155 }
5156 }
5157 }
5158 return 0;
5159 }
5160
expandResourceRef(const char16_t * refStr,size_t refLen,String16 * outPackage,String16 * outType,String16 * outName,const String16 * defType,const String16 * defPackage,const char ** outErrorMsg,bool * outPublicOnly)5161 bool ResTable::expandResourceRef(const char16_t* refStr, size_t refLen,
5162 String16* outPackage,
5163 String16* outType,
5164 String16* outName,
5165 const String16* defType,
5166 const String16* defPackage,
5167 const char** outErrorMsg,
5168 bool* outPublicOnly)
5169 {
5170 const char16_t* packageEnd = NULL;
5171 const char16_t* typeEnd = NULL;
5172 const char16_t* p = refStr;
5173 const char16_t* const end = p + refLen;
5174 while (p < end) {
5175 if (*p == ':') packageEnd = p;
5176 else if (*p == '/') {
5177 typeEnd = p;
5178 break;
5179 }
5180 p++;
5181 }
5182 p = refStr;
5183 if (*p == '@') p++;
5184
5185 if (outPublicOnly != NULL) {
5186 *outPublicOnly = true;
5187 }
5188 if (*p == '*') {
5189 p++;
5190 if (outPublicOnly != NULL) {
5191 *outPublicOnly = false;
5192 }
5193 }
5194
5195 if (packageEnd) {
5196 *outPackage = String16(p, packageEnd-p);
5197 p = packageEnd+1;
5198 } else {
5199 if (!defPackage) {
5200 if (outErrorMsg) {
5201 *outErrorMsg = "No resource package specified";
5202 }
5203 return false;
5204 }
5205 *outPackage = *defPackage;
5206 }
5207 if (typeEnd) {
5208 *outType = String16(p, typeEnd-p);
5209 p = typeEnd+1;
5210 } else {
5211 if (!defType) {
5212 if (outErrorMsg) {
5213 *outErrorMsg = "No resource type specified";
5214 }
5215 return false;
5216 }
5217 *outType = *defType;
5218 }
5219 *outName = String16(p, end-p);
5220 if(**outPackage == 0) {
5221 if(outErrorMsg) {
5222 *outErrorMsg = "Resource package cannot be an empty string";
5223 }
5224 return false;
5225 }
5226 if(**outType == 0) {
5227 if(outErrorMsg) {
5228 *outErrorMsg = "Resource type cannot be an empty string";
5229 }
5230 return false;
5231 }
5232 if(**outName == 0) {
5233 if(outErrorMsg) {
5234 *outErrorMsg = "Resource id cannot be an empty string";
5235 }
5236 return false;
5237 }
5238 return true;
5239 }
5240
get_hex(char c,bool * outError)5241 static uint32_t get_hex(char c, bool* outError)
5242 {
5243 if (c >= '0' && c <= '9') {
5244 return c - '0';
5245 } else if (c >= 'a' && c <= 'f') {
5246 return c - 'a' + 0xa;
5247 } else if (c >= 'A' && c <= 'F') {
5248 return c - 'A' + 0xa;
5249 }
5250 *outError = true;
5251 return 0;
5252 }
5253
5254 struct unit_entry
5255 {
5256 const char* name;
5257 size_t len;
5258 uint8_t type;
5259 uint32_t unit;
5260 float scale;
5261 };
5262
5263 static const unit_entry unitNames[] = {
5264 { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
5265 { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
5266 { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
5267 { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
5268 { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
5269 { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
5270 { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
5271 { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
5272 { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
5273 { NULL, 0, 0, 0, 0 }
5274 };
5275
parse_unit(const char * str,Res_value * outValue,float * outScale,const char ** outEnd)5276 static bool parse_unit(const char* str, Res_value* outValue,
5277 float* outScale, const char** outEnd)
5278 {
5279 const char* end = str;
5280 while (*end != 0 && !isspace((unsigned char)*end)) {
5281 end++;
5282 }
5283 const size_t len = end-str;
5284
5285 const char* realEnd = end;
5286 while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
5287 realEnd++;
5288 }
5289 if (*realEnd != 0) {
5290 return false;
5291 }
5292
5293 const unit_entry* cur = unitNames;
5294 while (cur->name) {
5295 if (len == cur->len && strncmp(cur->name, str, len) == 0) {
5296 outValue->dataType = cur->type;
5297 outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
5298 *outScale = cur->scale;
5299 *outEnd = end;
5300 //printf("Found unit %s for %s\n", cur->name, str);
5301 return true;
5302 }
5303 cur++;
5304 }
5305
5306 return false;
5307 }
5308
U16StringToInt(const char16_t * s,size_t len,Res_value * outValue)5309 bool U16StringToInt(const char16_t* s, size_t len, Res_value* outValue)
5310 {
5311 while (len > 0 && isspace16(*s)) {
5312 s++;
5313 len--;
5314 }
5315
5316 if (len <= 0) {
5317 return false;
5318 }
5319
5320 size_t i = 0;
5321 int64_t val = 0;
5322 bool neg = false;
5323
5324 if (*s == '-') {
5325 neg = true;
5326 i++;
5327 }
5328
5329 if (s[i] < '0' || s[i] > '9') {
5330 return false;
5331 }
5332
5333 static_assert(std::is_same<uint32_t, Res_value::data_type>::value,
5334 "Res_value::data_type has changed. The range checks in this "
5335 "function are no longer correct.");
5336
5337 // Decimal or hex?
5338 bool isHex;
5339 if (len > 1 && s[i] == '0' && s[i+1] == 'x') {
5340 isHex = true;
5341 i += 2;
5342
5343 if (neg) {
5344 return false;
5345 }
5346
5347 if (i == len) {
5348 // Just u"0x"
5349 return false;
5350 }
5351
5352 bool error = false;
5353 while (i < len && !error) {
5354 val = (val*16) + get_hex(s[i], &error);
5355 i++;
5356
5357 if (val > std::numeric_limits<uint32_t>::max()) {
5358 return false;
5359 }
5360 }
5361 if (error) {
5362 return false;
5363 }
5364 } else {
5365 isHex = false;
5366 while (i < len) {
5367 if (s[i] < '0' || s[i] > '9') {
5368 return false;
5369 }
5370 val = (val*10) + s[i]-'0';
5371 i++;
5372
5373 if ((neg && -val < std::numeric_limits<int32_t>::min()) ||
5374 (!neg && val > std::numeric_limits<int32_t>::max())) {
5375 return false;
5376 }
5377 }
5378 }
5379
5380 if (neg) val = -val;
5381
5382 while (i < len && isspace16(s[i])) {
5383 i++;
5384 }
5385
5386 if (i != len) {
5387 return false;
5388 }
5389
5390 if (outValue) {
5391 outValue->dataType =
5392 isHex ? outValue->TYPE_INT_HEX : outValue->TYPE_INT_DEC;
5393 outValue->data = static_cast<Res_value::data_type>(val);
5394 }
5395 return true;
5396 }
5397
stringToInt(const char16_t * s,size_t len,Res_value * outValue)5398 bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
5399 {
5400 return U16StringToInt(s, len, outValue);
5401 }
5402
stringToFloat(const char16_t * s,size_t len,Res_value * outValue)5403 bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
5404 {
5405 while (len > 0 && isspace16(*s)) {
5406 s++;
5407 len--;
5408 }
5409
5410 if (len <= 0) {
5411 return false;
5412 }
5413
5414 char buf[128];
5415 int i=0;
5416 while (len > 0 && *s != 0 && i < 126) {
5417 if (*s > 255) {
5418 return false;
5419 }
5420 buf[i++] = *s++;
5421 len--;
5422 }
5423
5424 if (len > 0) {
5425 return false;
5426 }
5427 if ((buf[0] < '0' || buf[0] > '9') && buf[0] != '.' && buf[0] != '-' && buf[0] != '+') {
5428 return false;
5429 }
5430
5431 buf[i] = 0;
5432 const char* end;
5433 float f = strtof(buf, (char**)&end);
5434
5435 if (*end != 0 && !isspace((unsigned char)*end)) {
5436 // Might be a unit...
5437 float scale;
5438 if (parse_unit(end, outValue, &scale, &end)) {
5439 f *= scale;
5440 const bool neg = f < 0;
5441 if (neg) f = -f;
5442 uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
5443 uint32_t radix;
5444 uint32_t shift;
5445 if ((bits&0x7fffff) == 0) {
5446 // Always use 23p0 if there is no fraction, just to make
5447 // things easier to read.
5448 radix = Res_value::COMPLEX_RADIX_23p0;
5449 shift = 23;
5450 } else if ((bits&0xffffffffff800000LL) == 0) {
5451 // Magnitude is zero -- can fit in 0 bits of precision.
5452 radix = Res_value::COMPLEX_RADIX_0p23;
5453 shift = 0;
5454 } else if ((bits&0xffffffff80000000LL) == 0) {
5455 // Magnitude can fit in 8 bits of precision.
5456 radix = Res_value::COMPLEX_RADIX_8p15;
5457 shift = 8;
5458 } else if ((bits&0xffffff8000000000LL) == 0) {
5459 // Magnitude can fit in 16 bits of precision.
5460 radix = Res_value::COMPLEX_RADIX_16p7;
5461 shift = 16;
5462 } else {
5463 // Magnitude needs entire range, so no fractional part.
5464 radix = Res_value::COMPLEX_RADIX_23p0;
5465 shift = 23;
5466 }
5467 int32_t mantissa = (int32_t)(
5468 (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
5469 if (neg) {
5470 mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
5471 }
5472 outValue->data |=
5473 (radix<<Res_value::COMPLEX_RADIX_SHIFT)
5474 | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
5475 //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
5476 // f * (neg ? -1 : 1), bits, f*(1<<23),
5477 // radix, shift, outValue->data);
5478 return true;
5479 }
5480 return false;
5481 }
5482
5483 while (*end != 0 && isspace((unsigned char)*end)) {
5484 end++;
5485 }
5486
5487 if (*end == 0) {
5488 if (outValue) {
5489 outValue->dataType = outValue->TYPE_FLOAT;
5490 *(float*)(&outValue->data) = f;
5491 return true;
5492 }
5493 }
5494
5495 return false;
5496 }
5497
stringToValue(Res_value * outValue,String16 * outString,const char16_t * s,size_t len,bool preserveSpaces,bool coerceType,uint32_t attrID,const String16 * defType,const String16 * defPackage,Accessor * accessor,void * accessorCookie,uint32_t attrType,bool enforcePrivate) const5498 bool ResTable::stringToValue(Res_value* outValue, String16* outString,
5499 const char16_t* s, size_t len,
5500 bool preserveSpaces, bool coerceType,
5501 uint32_t attrID,
5502 const String16* defType,
5503 const String16* defPackage,
5504 Accessor* accessor,
5505 void* accessorCookie,
5506 uint32_t attrType,
5507 bool enforcePrivate) const
5508 {
5509 bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
5510 const char* errorMsg = NULL;
5511
5512 outValue->size = sizeof(Res_value);
5513 outValue->res0 = 0;
5514
5515 // First strip leading/trailing whitespace. Do this before handling
5516 // escapes, so they can be used to force whitespace into the string.
5517 if (!preserveSpaces) {
5518 while (len > 0 && isspace16(*s)) {
5519 s++;
5520 len--;
5521 }
5522 while (len > 0 && isspace16(s[len-1])) {
5523 len--;
5524 }
5525 // If the string ends with '\', then we keep the space after it.
5526 if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
5527 len++;
5528 }
5529 }
5530
5531 //printf("Value for: %s\n", String8(s, len).string());
5532
5533 uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
5534 uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
5535 bool fromAccessor = false;
5536 if (attrID != 0 && !Res_INTERNALID(attrID)) {
5537 const ssize_t p = getResourcePackageIndex(attrID);
5538 const bag_entry* bag;
5539 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5540 //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
5541 if (cnt >= 0) {
5542 while (cnt > 0) {
5543 //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
5544 switch (bag->map.name.ident) {
5545 case ResTable_map::ATTR_TYPE:
5546 attrType = bag->map.value.data;
5547 break;
5548 case ResTable_map::ATTR_MIN:
5549 attrMin = bag->map.value.data;
5550 break;
5551 case ResTable_map::ATTR_MAX:
5552 attrMax = bag->map.value.data;
5553 break;
5554 case ResTable_map::ATTR_L10N:
5555 l10nReq = bag->map.value.data;
5556 break;
5557 }
5558 bag++;
5559 cnt--;
5560 }
5561 unlockBag(bag);
5562 } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
5563 fromAccessor = true;
5564 if (attrType == ResTable_map::TYPE_ENUM
5565 || attrType == ResTable_map::TYPE_FLAGS
5566 || attrType == ResTable_map::TYPE_INTEGER) {
5567 accessor->getAttributeMin(attrID, &attrMin);
5568 accessor->getAttributeMax(attrID, &attrMax);
5569 }
5570 if (localizationSetting) {
5571 l10nReq = accessor->getAttributeL10N(attrID);
5572 }
5573 }
5574 }
5575
5576 const bool canStringCoerce =
5577 coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
5578
5579 if (*s == '@') {
5580 outValue->dataType = outValue->TYPE_REFERENCE;
5581
5582 // Note: we don't check attrType here because the reference can
5583 // be to any other type; we just need to count on the client making
5584 // sure the referenced type is correct.
5585
5586 //printf("Looking up ref: %s\n", String8(s, len).string());
5587
5588 // It's a reference!
5589 if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
5590 // Special case @null as undefined. This will be converted by
5591 // AssetManager to TYPE_NULL with data DATA_NULL_UNDEFINED.
5592 outValue->data = 0;
5593 return true;
5594 } else if (len == 6 && s[1]=='e' && s[2]=='m' && s[3]=='p' && s[4]=='t' && s[5]=='y') {
5595 // Special case @empty as explicitly defined empty value.
5596 outValue->dataType = Res_value::TYPE_NULL;
5597 outValue->data = Res_value::DATA_NULL_EMPTY;
5598 return true;
5599 } else {
5600 bool createIfNotFound = false;
5601 const char16_t* resourceRefName;
5602 int resourceNameLen;
5603 if (len > 2 && s[1] == '+') {
5604 createIfNotFound = true;
5605 resourceRefName = s + 2;
5606 resourceNameLen = len - 2;
5607 } else if (len > 2 && s[1] == '*') {
5608 enforcePrivate = false;
5609 resourceRefName = s + 2;
5610 resourceNameLen = len - 2;
5611 } else {
5612 createIfNotFound = false;
5613 resourceRefName = s + 1;
5614 resourceNameLen = len - 1;
5615 }
5616 String16 package, type, name;
5617 if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
5618 defType, defPackage, &errorMsg)) {
5619 if (accessor != NULL) {
5620 accessor->reportError(accessorCookie, errorMsg);
5621 }
5622 return false;
5623 }
5624
5625 uint32_t specFlags = 0;
5626 uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
5627 type.size(), package.string(), package.size(), &specFlags);
5628 if (rid != 0) {
5629 if (enforcePrivate) {
5630 if (accessor == NULL || accessor->getAssetsPackage() != package) {
5631 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5632 if (accessor != NULL) {
5633 accessor->reportError(accessorCookie, "Resource is not public.");
5634 }
5635 return false;
5636 }
5637 }
5638 }
5639
5640 if (accessor) {
5641 rid = Res_MAKEID(
5642 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5643 Res_GETTYPE(rid), Res_GETENTRY(rid));
5644 if (kDebugTableNoisy) {
5645 ALOGI("Incl %s:%s/%s: 0x%08x\n",
5646 String8(package).string(), String8(type).string(),
5647 String8(name).string(), rid);
5648 }
5649 }
5650
5651 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5652 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5653 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5654 }
5655 outValue->data = rid;
5656 return true;
5657 }
5658
5659 if (accessor) {
5660 uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
5661 createIfNotFound);
5662 if (rid != 0) {
5663 if (kDebugTableNoisy) {
5664 ALOGI("Pckg %s:%s/%s: 0x%08x\n",
5665 String8(package).string(), String8(type).string(),
5666 String8(name).string(), rid);
5667 }
5668 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5669 if (packageId == 0x00) {
5670 outValue->data = rid;
5671 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5672 return true;
5673 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5674 // We accept packageId's generated as 0x01 in order to support
5675 // building the android system resources
5676 outValue->data = rid;
5677 return true;
5678 }
5679 }
5680 }
5681 }
5682
5683 if (accessor != NULL) {
5684 accessor->reportError(accessorCookie, "No resource found that matches the given name");
5685 }
5686 return false;
5687 }
5688
5689 // if we got to here, and localization is required and it's not a reference,
5690 // complain and bail.
5691 if (l10nReq == ResTable_map::L10N_SUGGESTED) {
5692 if (localizationSetting) {
5693 if (accessor != NULL) {
5694 accessor->reportError(accessorCookie, "This attribute must be localized.");
5695 }
5696 }
5697 }
5698
5699 if (*s == '#') {
5700 // It's a color! Convert to an integer of the form 0xaarrggbb.
5701 uint32_t color = 0;
5702 bool error = false;
5703 if (len == 4) {
5704 outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
5705 color |= 0xFF000000;
5706 color |= get_hex(s[1], &error) << 20;
5707 color |= get_hex(s[1], &error) << 16;
5708 color |= get_hex(s[2], &error) << 12;
5709 color |= get_hex(s[2], &error) << 8;
5710 color |= get_hex(s[3], &error) << 4;
5711 color |= get_hex(s[3], &error);
5712 } else if (len == 5) {
5713 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
5714 color |= get_hex(s[1], &error) << 28;
5715 color |= get_hex(s[1], &error) << 24;
5716 color |= get_hex(s[2], &error) << 20;
5717 color |= get_hex(s[2], &error) << 16;
5718 color |= get_hex(s[3], &error) << 12;
5719 color |= get_hex(s[3], &error) << 8;
5720 color |= get_hex(s[4], &error) << 4;
5721 color |= get_hex(s[4], &error);
5722 } else if (len == 7) {
5723 outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
5724 color |= 0xFF000000;
5725 color |= get_hex(s[1], &error) << 20;
5726 color |= get_hex(s[2], &error) << 16;
5727 color |= get_hex(s[3], &error) << 12;
5728 color |= get_hex(s[4], &error) << 8;
5729 color |= get_hex(s[5], &error) << 4;
5730 color |= get_hex(s[6], &error);
5731 } else if (len == 9) {
5732 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
5733 color |= get_hex(s[1], &error) << 28;
5734 color |= get_hex(s[2], &error) << 24;
5735 color |= get_hex(s[3], &error) << 20;
5736 color |= get_hex(s[4], &error) << 16;
5737 color |= get_hex(s[5], &error) << 12;
5738 color |= get_hex(s[6], &error) << 8;
5739 color |= get_hex(s[7], &error) << 4;
5740 color |= get_hex(s[8], &error);
5741 } else {
5742 error = true;
5743 }
5744 if (!error) {
5745 if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
5746 if (!canStringCoerce) {
5747 if (accessor != NULL) {
5748 accessor->reportError(accessorCookie,
5749 "Color types not allowed");
5750 }
5751 return false;
5752 }
5753 } else {
5754 outValue->data = color;
5755 //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
5756 return true;
5757 }
5758 } else {
5759 if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
5760 if (accessor != NULL) {
5761 accessor->reportError(accessorCookie, "Color value not valid --"
5762 " must be #rgb, #argb, #rrggbb, or #aarrggbb");
5763 }
5764 #if 0
5765 fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
5766 "Resource File", //(const char*)in->getPrintableSource(),
5767 String8(*curTag).string(),
5768 String8(s, len).string());
5769 #endif
5770 return false;
5771 }
5772 }
5773 }
5774
5775 if (*s == '?') {
5776 outValue->dataType = outValue->TYPE_ATTRIBUTE;
5777
5778 // Note: we don't check attrType here because the reference can
5779 // be to any other type; we just need to count on the client making
5780 // sure the referenced type is correct.
5781
5782 //printf("Looking up attr: %s\n", String8(s, len).string());
5783
5784 static const String16 attr16("attr");
5785 String16 package, type, name;
5786 if (!expandResourceRef(s+1, len-1, &package, &type, &name,
5787 &attr16, defPackage, &errorMsg)) {
5788 if (accessor != NULL) {
5789 accessor->reportError(accessorCookie, errorMsg);
5790 }
5791 return false;
5792 }
5793
5794 //printf("Pkg: %s, Type: %s, Name: %s\n",
5795 // String8(package).string(), String8(type).string(),
5796 // String8(name).string());
5797 uint32_t specFlags = 0;
5798 uint32_t rid =
5799 identifierForName(name.string(), name.size(),
5800 type.string(), type.size(),
5801 package.string(), package.size(), &specFlags);
5802 if (rid != 0) {
5803 if (enforcePrivate) {
5804 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5805 if (accessor != NULL) {
5806 accessor->reportError(accessorCookie, "Attribute is not public.");
5807 }
5808 return false;
5809 }
5810 }
5811
5812 if (accessor) {
5813 rid = Res_MAKEID(
5814 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5815 Res_GETTYPE(rid), Res_GETENTRY(rid));
5816 }
5817
5818 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5819 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5820 outValue->dataType = Res_value::TYPE_DYNAMIC_ATTRIBUTE;
5821 }
5822 outValue->data = rid;
5823 return true;
5824 }
5825
5826 if (accessor) {
5827 uint32_t rid = accessor->getCustomResource(package, type, name);
5828 if (rid != 0) {
5829 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5830 if (packageId == 0x00) {
5831 outValue->data = rid;
5832 outValue->dataType = Res_value::TYPE_DYNAMIC_ATTRIBUTE;
5833 return true;
5834 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5835 // We accept packageId's generated as 0x01 in order to support
5836 // building the android system resources
5837 outValue->data = rid;
5838 return true;
5839 }
5840 }
5841 }
5842
5843 if (accessor != NULL) {
5844 accessor->reportError(accessorCookie, "No resource found that matches the given name");
5845 }
5846 return false;
5847 }
5848
5849 if (stringToInt(s, len, outValue)) {
5850 if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
5851 // If this type does not allow integers, but does allow floats,
5852 // fall through on this error case because the float type should
5853 // be able to accept any integer value.
5854 if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
5855 if (accessor != NULL) {
5856 accessor->reportError(accessorCookie, "Integer types not allowed");
5857 }
5858 return false;
5859 }
5860 } else {
5861 if (((int32_t)outValue->data) < ((int32_t)attrMin)
5862 || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
5863 if (accessor != NULL) {
5864 accessor->reportError(accessorCookie, "Integer value out of range");
5865 }
5866 return false;
5867 }
5868 return true;
5869 }
5870 }
5871
5872 if (stringToFloat(s, len, outValue)) {
5873 if (outValue->dataType == Res_value::TYPE_DIMENSION) {
5874 if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
5875 return true;
5876 }
5877 if (!canStringCoerce) {
5878 if (accessor != NULL) {
5879 accessor->reportError(accessorCookie, "Dimension types not allowed");
5880 }
5881 return false;
5882 }
5883 } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
5884 if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
5885 return true;
5886 }
5887 if (!canStringCoerce) {
5888 if (accessor != NULL) {
5889 accessor->reportError(accessorCookie, "Fraction types not allowed");
5890 }
5891 return false;
5892 }
5893 } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
5894 if (!canStringCoerce) {
5895 if (accessor != NULL) {
5896 accessor->reportError(accessorCookie, "Float types not allowed");
5897 }
5898 return false;
5899 }
5900 } else {
5901 return true;
5902 }
5903 }
5904
5905 if (len == 4) {
5906 if ((s[0] == 't' || s[0] == 'T') &&
5907 (s[1] == 'r' || s[1] == 'R') &&
5908 (s[2] == 'u' || s[2] == 'U') &&
5909 (s[3] == 'e' || s[3] == 'E')) {
5910 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5911 if (!canStringCoerce) {
5912 if (accessor != NULL) {
5913 accessor->reportError(accessorCookie, "Boolean types not allowed");
5914 }
5915 return false;
5916 }
5917 } else {
5918 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5919 outValue->data = (uint32_t)-1;
5920 return true;
5921 }
5922 }
5923 }
5924
5925 if (len == 5) {
5926 if ((s[0] == 'f' || s[0] == 'F') &&
5927 (s[1] == 'a' || s[1] == 'A') &&
5928 (s[2] == 'l' || s[2] == 'L') &&
5929 (s[3] == 's' || s[3] == 'S') &&
5930 (s[4] == 'e' || s[4] == 'E')) {
5931 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5932 if (!canStringCoerce) {
5933 if (accessor != NULL) {
5934 accessor->reportError(accessorCookie, "Boolean types not allowed");
5935 }
5936 return false;
5937 }
5938 } else {
5939 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5940 outValue->data = 0;
5941 return true;
5942 }
5943 }
5944 }
5945
5946 if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
5947 const ssize_t p = getResourcePackageIndex(attrID);
5948 const bag_entry* bag;
5949 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5950 //printf("Got %d for enum\n", cnt);
5951 if (cnt >= 0) {
5952 resource_name rname;
5953 while (cnt > 0) {
5954 if (!Res_INTERNALID(bag->map.name.ident)) {
5955 //printf("Trying attr #%08x\n", bag->map.name.ident);
5956 if (getResourceName(bag->map.name.ident, false, &rname)) {
5957 #if 0
5958 printf("Matching %s against %s (0x%08x)\n",
5959 String8(s, len).string(),
5960 String8(rname.name, rname.nameLen).string(),
5961 bag->map.name.ident);
5962 #endif
5963 if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
5964 outValue->dataType = bag->map.value.dataType;
5965 outValue->data = bag->map.value.data;
5966 unlockBag(bag);
5967 return true;
5968 }
5969 }
5970
5971 }
5972 bag++;
5973 cnt--;
5974 }
5975 unlockBag(bag);
5976 }
5977
5978 if (fromAccessor) {
5979 if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5980 return true;
5981 }
5982 }
5983 }
5984
5985 if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5986 const ssize_t p = getResourcePackageIndex(attrID);
5987 const bag_entry* bag;
5988 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5989 //printf("Got %d for flags\n", cnt);
5990 if (cnt >= 0) {
5991 bool failed = false;
5992 resource_name rname;
5993 outValue->dataType = Res_value::TYPE_INT_HEX;
5994 outValue->data = 0;
5995 const char16_t* end = s + len;
5996 const char16_t* pos = s;
5997 while (pos < end && !failed) {
5998 const char16_t* start = pos;
5999 pos++;
6000 while (pos < end && *pos != '|') {
6001 pos++;
6002 }
6003 //printf("Looking for: %s\n", String8(start, pos-start).string());
6004 const bag_entry* bagi = bag;
6005 ssize_t i;
6006 for (i=0; i<cnt; i++, bagi++) {
6007 if (!Res_INTERNALID(bagi->map.name.ident)) {
6008 //printf("Trying attr #%08x\n", bagi->map.name.ident);
6009 if (getResourceName(bagi->map.name.ident, false, &rname)) {
6010 #if 0
6011 printf("Matching %s against %s (0x%08x)\n",
6012 String8(start,pos-start).string(),
6013 String8(rname.name, rname.nameLen).string(),
6014 bagi->map.name.ident);
6015 #endif
6016 if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
6017 outValue->data |= bagi->map.value.data;
6018 break;
6019 }
6020 }
6021 }
6022 }
6023 if (i >= cnt) {
6024 // Didn't find this flag identifier.
6025 failed = true;
6026 }
6027 if (pos < end) {
6028 pos++;
6029 }
6030 }
6031 unlockBag(bag);
6032 if (!failed) {
6033 //printf("Final flag value: 0x%lx\n", outValue->data);
6034 return true;
6035 }
6036 }
6037
6038
6039 if (fromAccessor) {
6040 if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
6041 //printf("Final flag value: 0x%lx\n", outValue->data);
6042 return true;
6043 }
6044 }
6045 }
6046
6047 if ((attrType&ResTable_map::TYPE_STRING) == 0) {
6048 if (accessor != NULL) {
6049 accessor->reportError(accessorCookie, "String types not allowed");
6050 }
6051 return false;
6052 }
6053
6054 // Generic string handling...
6055 outValue->dataType = outValue->TYPE_STRING;
6056 if (outString) {
6057 bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
6058 if (accessor != NULL) {
6059 accessor->reportError(accessorCookie, errorMsg);
6060 }
6061 return failed;
6062 }
6063
6064 return true;
6065 }
6066
collectString(String16 * outString,const char16_t * s,size_t len,bool preserveSpaces,const char ** outErrorMsg,bool append)6067 bool ResTable::collectString(String16* outString,
6068 const char16_t* s, size_t len,
6069 bool preserveSpaces,
6070 const char** outErrorMsg,
6071 bool append)
6072 {
6073 String16 tmp;
6074
6075 char quoted = 0;
6076 const char16_t* p = s;
6077 while (p < (s+len)) {
6078 while (p < (s+len)) {
6079 const char16_t c = *p;
6080 if (c == '\\') {
6081 break;
6082 }
6083 if (!preserveSpaces) {
6084 if (quoted == 0 && isspace16(c)
6085 && (c != ' ' || isspace16(*(p+1)))) {
6086 break;
6087 }
6088 if (c == '"' && (quoted == 0 || quoted == '"')) {
6089 break;
6090 }
6091 if (c == '\'' && (quoted == 0 || quoted == '\'')) {
6092 /*
6093 * In practice, when people write ' instead of \'
6094 * in a string, they are doing it by accident
6095 * instead of really meaning to use ' as a quoting
6096 * character. Warn them so they don't lose it.
6097 */
6098 if (outErrorMsg) {
6099 *outErrorMsg = "Apostrophe not preceded by \\";
6100 }
6101 return false;
6102 }
6103 }
6104 p++;
6105 }
6106 if (p < (s+len)) {
6107 if (p > s) {
6108 tmp.append(String16(s, p-s));
6109 }
6110 if (!preserveSpaces && (*p == '"' || *p == '\'')) {
6111 if (quoted == 0) {
6112 quoted = *p;
6113 } else {
6114 quoted = 0;
6115 }
6116 p++;
6117 } else if (!preserveSpaces && isspace16(*p)) {
6118 // Space outside of a quote -- consume all spaces and
6119 // leave a single plain space char.
6120 tmp.append(String16(" "));
6121 p++;
6122 while (p < (s+len) && isspace16(*p)) {
6123 p++;
6124 }
6125 } else if (*p == '\\') {
6126 p++;
6127 if (p < (s+len)) {
6128 switch (*p) {
6129 case 't':
6130 tmp.append(String16("\t"));
6131 break;
6132 case 'n':
6133 tmp.append(String16("\n"));
6134 break;
6135 case '#':
6136 tmp.append(String16("#"));
6137 break;
6138 case '@':
6139 tmp.append(String16("@"));
6140 break;
6141 case '?':
6142 tmp.append(String16("?"));
6143 break;
6144 case '"':
6145 tmp.append(String16("\""));
6146 break;
6147 case '\'':
6148 tmp.append(String16("'"));
6149 break;
6150 case '\\':
6151 tmp.append(String16("\\"));
6152 break;
6153 case 'u':
6154 {
6155 char16_t chr = 0;
6156 int i = 0;
6157 while (i < 4 && p[1] != 0) {
6158 p++;
6159 i++;
6160 int c;
6161 if (*p >= '0' && *p <= '9') {
6162 c = *p - '0';
6163 } else if (*p >= 'a' && *p <= 'f') {
6164 c = *p - 'a' + 10;
6165 } else if (*p >= 'A' && *p <= 'F') {
6166 c = *p - 'A' + 10;
6167 } else {
6168 if (outErrorMsg) {
6169 *outErrorMsg = "Bad character in \\u unicode escape sequence";
6170 }
6171 return false;
6172 }
6173 chr = (chr<<4) | c;
6174 }
6175 tmp.append(String16(&chr, 1));
6176 } break;
6177 default:
6178 // ignore unknown escape chars.
6179 break;
6180 }
6181 p++;
6182 }
6183 }
6184 len -= (p-s);
6185 s = p;
6186 }
6187 }
6188
6189 if (tmp.size() != 0) {
6190 if (len > 0) {
6191 tmp.append(String16(s, len));
6192 }
6193 if (append) {
6194 outString->append(tmp);
6195 } else {
6196 outString->setTo(tmp);
6197 }
6198 } else {
6199 if (append) {
6200 outString->append(String16(s, len));
6201 } else {
6202 outString->setTo(s, len);
6203 }
6204 }
6205
6206 return true;
6207 }
6208
getBasePackageCount() const6209 size_t ResTable::getBasePackageCount() const
6210 {
6211 if (mError != NO_ERROR) {
6212 return 0;
6213 }
6214 return mPackageGroups.size();
6215 }
6216
getBasePackageName(size_t idx) const6217 const String16 ResTable::getBasePackageName(size_t idx) const
6218 {
6219 if (mError != NO_ERROR) {
6220 return String16();
6221 }
6222 LOG_FATAL_IF(idx >= mPackageGroups.size(),
6223 "Requested package index %d past package count %d",
6224 (int)idx, (int)mPackageGroups.size());
6225 return mPackageGroups[idx]->name;
6226 }
6227
getBasePackageId(size_t idx) const6228 uint32_t ResTable::getBasePackageId(size_t idx) const
6229 {
6230 if (mError != NO_ERROR) {
6231 return 0;
6232 }
6233 LOG_FATAL_IF(idx >= mPackageGroups.size(),
6234 "Requested package index %d past package count %d",
6235 (int)idx, (int)mPackageGroups.size());
6236 return mPackageGroups[idx]->id;
6237 }
6238
getLastTypeIdForPackage(size_t idx) const6239 uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
6240 {
6241 if (mError != NO_ERROR) {
6242 return 0;
6243 }
6244 LOG_FATAL_IF(idx >= mPackageGroups.size(),
6245 "Requested package index %d past package count %d",
6246 (int)idx, (int)mPackageGroups.size());
6247 const PackageGroup* const group = mPackageGroups[idx];
6248 return group->largestTypeId;
6249 }
6250
getTableCount() const6251 size_t ResTable::getTableCount() const
6252 {
6253 return mHeaders.size();
6254 }
6255
getTableStringBlock(size_t index) const6256 const ResStringPool* ResTable::getTableStringBlock(size_t index) const
6257 {
6258 return &mHeaders[index]->values;
6259 }
6260
getTableCookie(size_t index) const6261 int32_t ResTable::getTableCookie(size_t index) const
6262 {
6263 return mHeaders[index]->cookie;
6264 }
6265
getDynamicRefTableForCookie(int32_t cookie) const6266 const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
6267 {
6268 const size_t N = mPackageGroups.size();
6269 for (size_t i = 0; i < N; i++) {
6270 const PackageGroup* pg = mPackageGroups[i];
6271 size_t M = pg->packages.size();
6272 for (size_t j = 0; j < M; j++) {
6273 if (pg->packages[j]->header->cookie == cookie) {
6274 return &pg->dynamicRefTable;
6275 }
6276 }
6277 }
6278 return NULL;
6279 }
6280
compareResTableConfig(const ResTable_config & a,const ResTable_config & b)6281 static bool compareResTableConfig(const ResTable_config& a, const ResTable_config& b) {
6282 return a.compare(b) < 0;
6283 }
6284
6285 template <typename Func>
forEachConfiguration(bool ignoreMipmap,bool ignoreAndroidPackage,bool includeSystemConfigs,const Func & f) const6286 void ResTable::forEachConfiguration(bool ignoreMipmap, bool ignoreAndroidPackage,
6287 bool includeSystemConfigs, const Func& f) const {
6288 const size_t packageCount = mPackageGroups.size();
6289 const String16 android("android");
6290 for (size_t i = 0; i < packageCount; i++) {
6291 const PackageGroup* packageGroup = mPackageGroups[i];
6292 if (ignoreAndroidPackage && android == packageGroup->name) {
6293 continue;
6294 }
6295 if (!includeSystemConfigs && packageGroup->isSystemAsset) {
6296 continue;
6297 }
6298 const size_t typeCount = packageGroup->types.size();
6299 for (size_t j = 0; j < typeCount; j++) {
6300 const TypeList& typeList = packageGroup->types[j];
6301 const size_t numTypes = typeList.size();
6302 for (size_t k = 0; k < numTypes; k++) {
6303 const Type* type = typeList[k];
6304 const ResStringPool& typeStrings = type->package->typeStrings;
6305 const base::expected<String8, NullOrIOError> typeStr = typeStrings.string8ObjectAt(
6306 type->typeSpec->id - 1);
6307 if (ignoreMipmap && typeStr.has_value() && *typeStr == "mipmap") {
6308 continue;
6309 }
6310
6311 const size_t numConfigs = type->configs.size();
6312 for (size_t m = 0; m < numConfigs; m++) {
6313 const ResTable_type* config = type->configs[m];
6314 ResTable_config cfg;
6315 memset(&cfg, 0, sizeof(ResTable_config));
6316 cfg.copyFromDtoH(config->config);
6317
6318 f(cfg);
6319 }
6320 }
6321 }
6322 }
6323 }
6324
getConfigurations(Vector<ResTable_config> * configs,bool ignoreMipmap,bool ignoreAndroidPackage,bool includeSystemConfigs) const6325 void ResTable::getConfigurations(Vector<ResTable_config>* configs, bool ignoreMipmap,
6326 bool ignoreAndroidPackage, bool includeSystemConfigs) const {
6327 auto func = [&](const ResTable_config& cfg) {
6328 const auto beginIter = configs->begin();
6329 const auto endIter = configs->end();
6330
6331 auto iter = std::lower_bound(beginIter, endIter, cfg, compareResTableConfig);
6332 if (iter == endIter || iter->compare(cfg) != 0) {
6333 configs->insertAt(cfg, std::distance(beginIter, iter));
6334 }
6335 };
6336 forEachConfiguration(ignoreMipmap, ignoreAndroidPackage, includeSystemConfigs, func);
6337 }
6338
compareString8AndCString(const String8 & str,const char * cStr)6339 static bool compareString8AndCString(const String8& str, const char* cStr) {
6340 return strcmp(str.string(), cStr) < 0;
6341 }
6342
getLocales(Vector<String8> * locales,bool includeSystemLocales,bool mergeEquivalentLangs) const6343 void ResTable::getLocales(Vector<String8>* locales, bool includeSystemLocales,
6344 bool mergeEquivalentLangs) const {
6345 char locale[RESTABLE_MAX_LOCALE_LEN];
6346
6347 forEachConfiguration(false, false, includeSystemLocales, [&](const ResTable_config& cfg) {
6348 cfg.getBcp47Locale(locale, mergeEquivalentLangs /* canonicalize if merging */);
6349
6350 const auto beginIter = locales->begin();
6351 const auto endIter = locales->end();
6352
6353 auto iter = std::lower_bound(beginIter, endIter, locale, compareString8AndCString);
6354 if (iter == endIter || strcmp(iter->string(), locale) != 0) {
6355 locales->insertAt(String8(locale), std::distance(beginIter, iter));
6356 }
6357 });
6358 }
6359
StringPoolRef(const ResStringPool * pool,uint32_t index)6360 StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
6361 : mPool(pool), mIndex(index) {}
6362
string8() const6363 base::expected<StringPiece, NullOrIOError> StringPoolRef::string8() const {
6364 if (LIKELY(mPool != NULL)) {
6365 return mPool->string8At(mIndex);
6366 }
6367 return base::unexpected(std::nullopt);
6368 }
6369
string16() const6370 base::expected<StringPiece16, NullOrIOError> StringPoolRef::string16() const {
6371 if (LIKELY(mPool != NULL)) {
6372 return mPool->stringAt(mIndex);
6373 }
6374 return base::unexpected(std::nullopt);
6375 }
6376
getResourceFlags(uint32_t resID,uint32_t * outFlags) const6377 bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
6378 if (mError != NO_ERROR) {
6379 return false;
6380 }
6381
6382 const ssize_t p = getResourcePackageIndex(resID);
6383 const int t = Res_GETTYPE(resID);
6384 const int e = Res_GETENTRY(resID);
6385
6386 if (p < 0) {
6387 if (Res_GETPACKAGE(resID)+1 == 0) {
6388 ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
6389 } else {
6390 ALOGW("No known package when getting flags for resource number 0x%08x", resID);
6391 }
6392 return false;
6393 }
6394 if (t < 0) {
6395 ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
6396 return false;
6397 }
6398
6399 const PackageGroup* const grp = mPackageGroups[p];
6400 if (grp == NULL) {
6401 ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
6402 return false;
6403 }
6404
6405 Entry entry;
6406 status_t err = getEntry(grp, t, e, NULL, &entry);
6407 if (err != NO_ERROR) {
6408 return false;
6409 }
6410
6411 *outFlags = entry.specFlags;
6412 return true;
6413 }
6414
isPackageDynamic(uint8_t packageID) const6415 bool ResTable::isPackageDynamic(uint8_t packageID) const {
6416 if (mError != NO_ERROR) {
6417 return false;
6418 }
6419 if (packageID == 0) {
6420 ALOGW("Invalid package number 0x%08x", packageID);
6421 return false;
6422 }
6423
6424 const ssize_t p = getResourcePackageIndexFromPackage(packageID);
6425
6426 if (p < 0) {
6427 ALOGW("Unknown package number 0x%08x", packageID);
6428 return false;
6429 }
6430
6431 const PackageGroup* const grp = mPackageGroups[p];
6432 if (grp == NULL) {
6433 ALOGW("Bad identifier for package number 0x%08x", packageID);
6434 return false;
6435 }
6436
6437 return grp->isDynamic;
6438 }
6439
isResourceDynamic(uint32_t resID) const6440 bool ResTable::isResourceDynamic(uint32_t resID) const {
6441 if (mError != NO_ERROR) {
6442 return false;
6443 }
6444
6445 const ssize_t p = getResourcePackageIndex(resID);
6446 const int t = Res_GETTYPE(resID);
6447 const int e = Res_GETENTRY(resID);
6448
6449 if (p < 0) {
6450 if (Res_GETPACKAGE(resID)+1 == 0) {
6451 ALOGW("No package identifier for resource number 0x%08x", resID);
6452 } else {
6453 ALOGW("No known package for resource number 0x%08x", resID);
6454 }
6455 return false;
6456 }
6457 if (t < 0) {
6458 ALOGW("No type identifier for resource number 0x%08x", resID);
6459 return false;
6460 }
6461
6462 const PackageGroup* const grp = mPackageGroups[p];
6463 if (grp == NULL) {
6464 ALOGW("Bad identifier for resource number 0x%08x", resID);
6465 return false;
6466 }
6467
6468 Entry entry;
6469 status_t err = getEntry(grp, t, e, NULL, &entry);
6470 if (err != NO_ERROR) {
6471 return false;
6472 }
6473
6474 return grp->isDynamic;
6475 }
6476
keyCompare(const ResTable_sparseTypeEntry & entry,uint16_t entryIdx)6477 static bool keyCompare(const ResTable_sparseTypeEntry& entry , uint16_t entryIdx) {
6478 return dtohs(entry.idx) < entryIdx;
6479 }
6480
getEntry(const PackageGroup * packageGroup,int typeIndex,int entryIndex,const ResTable_config * config,Entry * outEntry) const6481 status_t ResTable::getEntry(
6482 const PackageGroup* packageGroup, int typeIndex, int entryIndex,
6483 const ResTable_config* config,
6484 Entry* outEntry) const
6485 {
6486 const TypeList& typeList = packageGroup->types[typeIndex];
6487 if (typeList.isEmpty()) {
6488 ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
6489 return BAD_TYPE;
6490 }
6491
6492 const ResTable_type* bestType = NULL;
6493 uint32_t bestOffset = ResTable_type::NO_ENTRY;
6494 const Package* bestPackage = NULL;
6495 uint32_t specFlags = 0;
6496 uint8_t actualTypeIndex = typeIndex;
6497 ResTable_config bestConfig;
6498 memset(&bestConfig, 0, sizeof(bestConfig));
6499
6500 // Iterate over the Types of each package.
6501 const size_t typeCount = typeList.size();
6502 for (size_t i = 0; i < typeCount; i++) {
6503 const Type* const typeSpec = typeList[i];
6504
6505 int realEntryIndex = entryIndex;
6506 int realTypeIndex = typeIndex;
6507 bool currentTypeIsOverlay = false;
6508
6509 // Runtime overlay packages provide a mapping of app resource
6510 // ID to package resource ID.
6511 if (typeSpec->idmapEntries.hasEntries()) {
6512 uint16_t overlayEntryIndex;
6513 if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
6514 // No such mapping exists
6515 continue;
6516 }
6517 realEntryIndex = overlayEntryIndex;
6518 realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
6519 currentTypeIsOverlay = true;
6520 }
6521
6522 // Check that the entry idx is within range of the declared entry count (ResTable_typeSpec).
6523 // Particular types (ResTable_type) may be encoded with sparse entries, and so their
6524 // entryCount do not need to match.
6525 if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
6526 ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
6527 Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
6528 entryIndex, static_cast<int>(typeSpec->entryCount));
6529 // We should normally abort here, but some legacy apps declare
6530 // resources in the 'android' package (old bug in AAPT).
6531 continue;
6532 }
6533
6534 // Aggregate all the flags for each package that defines this entry.
6535 if (typeSpec->typeSpecFlags != NULL) {
6536 specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
6537 } else {
6538 specFlags = -1;
6539 }
6540
6541 const Vector<const ResTable_type*>* candidateConfigs = &typeSpec->configs;
6542
6543 std::shared_ptr<Vector<const ResTable_type*>> filteredConfigs;
6544 if (config && memcmp(&mParams, config, sizeof(mParams)) == 0) {
6545 // Grab the lock first so we can safely get the current filtered list.
6546 AutoMutex _lock(mFilteredConfigLock);
6547
6548 // This configuration is equal to the one we have previously cached for,
6549 // so use the filtered configs.
6550
6551 const TypeCacheEntry& cacheEntry = packageGroup->typeCacheEntries[typeIndex];
6552 if (i < cacheEntry.filteredConfigs.size()) {
6553 if (cacheEntry.filteredConfigs[i]) {
6554 // Grab a reference to the shared_ptr so it doesn't get destroyed while
6555 // going through this list.
6556 filteredConfigs = cacheEntry.filteredConfigs[i];
6557
6558 // Use this filtered list.
6559 candidateConfigs = filteredConfigs.get();
6560 }
6561 }
6562 }
6563
6564 const size_t numConfigs = candidateConfigs->size();
6565 for (size_t c = 0; c < numConfigs; c++) {
6566 const ResTable_type* const thisType = candidateConfigs->itemAt(c);
6567 if (thisType == NULL) {
6568 continue;
6569 }
6570
6571 ResTable_config thisConfig;
6572 thisConfig.copyFromDtoH(thisType->config);
6573
6574 // Check to make sure this one is valid for the current parameters.
6575 if (config != NULL && !thisConfig.match(*config)) {
6576 continue;
6577 }
6578
6579 const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
6580 reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
6581
6582 uint32_t thisOffset;
6583
6584 // Check if there is the desired entry in this type.
6585 if (thisType->flags & ResTable_type::FLAG_SPARSE) {
6586 // This is encoded as a sparse map, so perform a binary search.
6587 const ResTable_sparseTypeEntry* sparseIndices =
6588 reinterpret_cast<const ResTable_sparseTypeEntry*>(eindex);
6589 const ResTable_sparseTypeEntry* result = std::lower_bound(
6590 sparseIndices, sparseIndices + dtohl(thisType->entryCount), realEntryIndex,
6591 keyCompare);
6592 if (result == sparseIndices + dtohl(thisType->entryCount)
6593 || dtohs(result->idx) != realEntryIndex) {
6594 // No entry found.
6595 continue;
6596 }
6597
6598 // Extract the offset from the entry. Each offset must be a multiple of 4
6599 // so we store it as the real offset divided by 4.
6600 thisOffset = dtohs(result->offset) * 4u;
6601 } else {
6602 if (static_cast<uint32_t>(realEntryIndex) >= dtohl(thisType->entryCount)) {
6603 // Entry does not exist.
6604 continue;
6605 }
6606
6607 thisOffset = dtohl(eindex[realEntryIndex]);
6608 }
6609
6610 if (thisOffset == ResTable_type::NO_ENTRY) {
6611 // There is no entry for this index and configuration.
6612 continue;
6613 }
6614
6615 if (bestType != NULL) {
6616 // Check if this one is less specific than the last found. If so,
6617 // we will skip it. We check starting with things we most care
6618 // about to those we least care about.
6619 if (!thisConfig.isBetterThan(bestConfig, config)) {
6620 if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
6621 continue;
6622 }
6623 }
6624 }
6625
6626 bestType = thisType;
6627 bestOffset = thisOffset;
6628 bestConfig = thisConfig;
6629 bestPackage = typeSpec->package;
6630 actualTypeIndex = realTypeIndex;
6631
6632 // If no config was specified, any type will do, so skip
6633 if (config == NULL) {
6634 break;
6635 }
6636 }
6637 }
6638
6639 if (bestType == NULL) {
6640 return BAD_INDEX;
6641 }
6642
6643 bestOffset += dtohl(bestType->entriesStart);
6644
6645 if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
6646 ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
6647 bestOffset, dtohl(bestType->header.size));
6648 return BAD_TYPE;
6649 }
6650 if ((bestOffset & 0x3) != 0) {
6651 ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
6652 return BAD_TYPE;
6653 }
6654
6655 const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
6656 reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
6657 if (dtohs(entry->size) < sizeof(*entry)) {
6658 ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
6659 return BAD_TYPE;
6660 }
6661
6662 if (outEntry != NULL) {
6663 outEntry->entry = entry;
6664 outEntry->config = bestConfig;
6665 outEntry->type = bestType;
6666 outEntry->specFlags = specFlags;
6667 outEntry->package = bestPackage;
6668 outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
6669 outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
6670 }
6671 return NO_ERROR;
6672 }
6673
parsePackage(const ResTable_package * const pkg,const Header * const header,bool appAsLib,bool isSystemAsset)6674 status_t ResTable::parsePackage(const ResTable_package* const pkg,
6675 const Header* const header, bool appAsLib, bool isSystemAsset)
6676 {
6677 const uint8_t* base = (const uint8_t*)pkg;
6678 status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
6679 header->dataEnd, "ResTable_package");
6680 if (err != NO_ERROR) {
6681 return (mError=err);
6682 }
6683
6684 const uint32_t pkgSize = dtohl(pkg->header.size);
6685
6686 if (dtohl(pkg->typeStrings) >= pkgSize) {
6687 ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
6688 dtohl(pkg->typeStrings), pkgSize);
6689 return (mError=BAD_TYPE);
6690 }
6691 if ((dtohl(pkg->typeStrings)&0x3) != 0) {
6692 ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
6693 dtohl(pkg->typeStrings));
6694 return (mError=BAD_TYPE);
6695 }
6696 if (dtohl(pkg->keyStrings) >= pkgSize) {
6697 ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
6698 dtohl(pkg->keyStrings), pkgSize);
6699 return (mError=BAD_TYPE);
6700 }
6701 if ((dtohl(pkg->keyStrings)&0x3) != 0) {
6702 ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
6703 dtohl(pkg->keyStrings));
6704 return (mError=BAD_TYPE);
6705 }
6706
6707 uint32_t id = dtohl(pkg->id);
6708 KeyedVector<uint8_t, IdmapEntries> idmapEntries;
6709
6710 if (header->resourceIDMap != NULL) {
6711 uint8_t targetPackageId = 0;
6712 status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
6713 if (err != NO_ERROR) {
6714 ALOGW("Overlay is broken");
6715 return (mError=err);
6716 }
6717 id = targetPackageId;
6718 }
6719
6720 bool isDynamic = false;
6721 if (id >= 256) {
6722 LOG_ALWAYS_FATAL("Package id out of range");
6723 return NO_ERROR;
6724 } else if (id == 0 || (id == 0x7f && appAsLib) || isSystemAsset) {
6725 // This is a library or a system asset, so assign an ID
6726 id = mNextPackageId++;
6727 isDynamic = true;
6728 }
6729
6730 PackageGroup* group = NULL;
6731 Package* package = new Package(this, header, pkg);
6732 if (package == NULL) {
6733 return (mError=NO_MEMORY);
6734 }
6735
6736 err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
6737 header->dataEnd-(base+dtohl(pkg->typeStrings)));
6738 if (err != NO_ERROR) {
6739 delete group;
6740 delete package;
6741 return (mError=err);
6742 }
6743
6744 err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
6745 header->dataEnd-(base+dtohl(pkg->keyStrings)));
6746 if (err != NO_ERROR) {
6747 delete group;
6748 delete package;
6749 return (mError=err);
6750 }
6751
6752 size_t idx = mPackageMap[id];
6753 if (idx == 0) {
6754 idx = mPackageGroups.size() + 1;
6755 char16_t tmpName[sizeof(pkg->name)/sizeof(pkg->name[0])];
6756 strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(pkg->name[0]));
6757 group = new PackageGroup(this, String16(tmpName), id, appAsLib, isSystemAsset, isDynamic);
6758 if (group == NULL) {
6759 delete package;
6760 return (mError=NO_MEMORY);
6761 }
6762
6763 err = mPackageGroups.add(group);
6764 if (err < NO_ERROR) {
6765 return (mError=err);
6766 }
6767
6768 mPackageMap[id] = static_cast<uint8_t>(idx);
6769
6770 // Find all packages that reference this package
6771 size_t N = mPackageGroups.size();
6772 for (size_t i = 0; i < N; i++) {
6773 mPackageGroups[i]->dynamicRefTable.addMapping(
6774 group->name, static_cast<uint8_t>(group->id));
6775 }
6776 } else {
6777 group = mPackageGroups.itemAt(idx - 1);
6778 if (group == NULL) {
6779 return (mError=UNKNOWN_ERROR);
6780 }
6781 }
6782
6783 err = group->packages.add(package);
6784 if (err < NO_ERROR) {
6785 return (mError=err);
6786 }
6787
6788 // Iterate through all chunks.
6789 const ResChunk_header* chunk =
6790 (const ResChunk_header*)(((const uint8_t*)pkg)
6791 + dtohs(pkg->header.headerSize));
6792 const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
6793 while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
6794 ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
6795 if (kDebugTableNoisy) {
6796 ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
6797 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
6798 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
6799 }
6800 const size_t csize = dtohl(chunk->size);
6801 const uint16_t ctype = dtohs(chunk->type);
6802 if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
6803 const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
6804 err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
6805 endPos, "ResTable_typeSpec");
6806 if (err != NO_ERROR) {
6807 return (mError=err);
6808 }
6809
6810 const size_t typeSpecSize = dtohl(typeSpec->header.size);
6811 const size_t newEntryCount = dtohl(typeSpec->entryCount);
6812
6813 if (kDebugLoadTableNoisy) {
6814 ALOGI("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
6815 (void*)(base-(const uint8_t*)chunk),
6816 dtohs(typeSpec->header.type),
6817 dtohs(typeSpec->header.headerSize),
6818 (void*)typeSpecSize);
6819 }
6820 // look for block overrun or int overflow when multiplying by 4
6821 if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
6822 || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
6823 > typeSpecSize)) {
6824 ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
6825 (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6826 (void*)typeSpecSize);
6827 return (mError=BAD_TYPE);
6828 }
6829
6830 if (typeSpec->id == 0) {
6831 ALOGW("ResTable_type has an id of 0.");
6832 return (mError=BAD_TYPE);
6833 }
6834
6835 if (newEntryCount > 0) {
6836 bool addToType = true;
6837 uint8_t typeIndex = typeSpec->id - 1;
6838 ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
6839 if (idmapIndex >= 0) {
6840 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6841 } else if (header->resourceIDMap != NULL) {
6842 // This is an overlay, but the types in this overlay are not
6843 // overlaying anything according to the idmap. We can skip these
6844 // as they will otherwise conflict with the other resources in the package
6845 // without a mapping.
6846 addToType = false;
6847 }
6848
6849 if (addToType) {
6850 TypeList& typeList = group->types.editItemAt(typeIndex);
6851 if (!typeList.isEmpty()) {
6852 const Type* existingType = typeList[0];
6853 if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
6854 ALOGW("ResTable_typeSpec entry count inconsistent: "
6855 "given %d, previously %d",
6856 (int) newEntryCount, (int) existingType->entryCount);
6857 // We should normally abort here, but some legacy apps declare
6858 // resources in the 'android' package (old bug in AAPT).
6859 }
6860 }
6861
6862 Type* t = new Type(header, package, newEntryCount);
6863 t->typeSpec = typeSpec;
6864 t->typeSpecFlags = (const uint32_t*)(
6865 ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
6866 if (idmapIndex >= 0) {
6867 t->idmapEntries = idmapEntries[idmapIndex];
6868 }
6869 typeList.add(t);
6870 group->largestTypeId = max(group->largestTypeId, typeSpec->id);
6871 }
6872 } else {
6873 ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
6874 }
6875
6876 } else if (ctype == RES_TABLE_TYPE_TYPE) {
6877 const ResTable_type* type = (const ResTable_type*)(chunk);
6878 err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
6879 endPos, "ResTable_type");
6880 if (err != NO_ERROR) {
6881 return (mError=err);
6882 }
6883
6884 const uint32_t typeSize = dtohl(type->header.size);
6885 const size_t newEntryCount = dtohl(type->entryCount);
6886
6887 if (kDebugLoadTableNoisy) {
6888 printf("Type off %p: type=0x%x, headerSize=0x%x, size=%u\n",
6889 (void*)(base-(const uint8_t*)chunk),
6890 dtohs(type->header.type),
6891 dtohs(type->header.headerSize),
6892 typeSize);
6893 }
6894 if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount) > typeSize) {
6895 ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
6896 (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6897 typeSize);
6898 return (mError=BAD_TYPE);
6899 }
6900
6901 if (newEntryCount != 0
6902 && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
6903 ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
6904 dtohl(type->entriesStart), typeSize);
6905 return (mError=BAD_TYPE);
6906 }
6907
6908 if (type->id == 0) {
6909 ALOGW("ResTable_type has an id of 0.");
6910 return (mError=BAD_TYPE);
6911 }
6912
6913 if (newEntryCount > 0) {
6914 bool addToType = true;
6915 uint8_t typeIndex = type->id - 1;
6916 ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
6917 if (idmapIndex >= 0) {
6918 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6919 } else if (header->resourceIDMap != NULL) {
6920 // This is an overlay, but the types in this overlay are not
6921 // overlaying anything according to the idmap. We can skip these
6922 // as they will otherwise conflict with the other resources in the package
6923 // without a mapping.
6924 addToType = false;
6925 }
6926
6927 if (addToType) {
6928 TypeList& typeList = group->types.editItemAt(typeIndex);
6929 if (typeList.isEmpty()) {
6930 ALOGE("No TypeSpec for type %d", type->id);
6931 return (mError=BAD_TYPE);
6932 }
6933
6934 Type* t = typeList.editItemAt(typeList.size() - 1);
6935 if (t->package != package) {
6936 ALOGE("No TypeSpec for type %d", type->id);
6937 return (mError=BAD_TYPE);
6938 }
6939
6940 t->configs.add(type);
6941
6942 if (kDebugTableGetEntry) {
6943 ResTable_config thisConfig;
6944 thisConfig.copyFromDtoH(type->config);
6945 ALOGI("Adding config to type %d: %s\n", type->id,
6946 thisConfig.toString().string());
6947 }
6948 }
6949 } else {
6950 ALOGV("Skipping empty ResTable_type for type %d", type->id);
6951 }
6952
6953 } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
6954
6955 if (group->dynamicRefTable.entries().size() == 0) {
6956 const ResTable_lib_header* lib = (const ResTable_lib_header*) chunk;
6957 status_t err = validate_chunk(&lib->header, sizeof(*lib),
6958 endPos, "ResTable_lib_header");
6959 if (err != NO_ERROR) {
6960 return (mError=err);
6961 }
6962
6963 err = group->dynamicRefTable.load(lib);
6964 if (err != NO_ERROR) {
6965 return (mError=err);
6966 }
6967
6968 // Fill in the reference table with the entries we already know about.
6969 size_t N = mPackageGroups.size();
6970 for (size_t i = 0; i < N; i++) {
6971 group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
6972 }
6973 } else {
6974 ALOGW("Found multiple library tables, ignoring...");
6975 }
6976 } else {
6977 if (ctype == RES_TABLE_OVERLAYABLE_TYPE) {
6978 package->definesOverlayable = true;
6979 }
6980
6981 status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
6982 endPos, "ResTable_package:unknown");
6983 if (err != NO_ERROR) {
6984 return (mError=err);
6985 }
6986 }
6987 chunk = (const ResChunk_header*)
6988 (((const uint8_t*)chunk) + csize);
6989 }
6990
6991 return NO_ERROR;
6992 }
6993
DynamicRefTable()6994 DynamicRefTable::DynamicRefTable() : DynamicRefTable(0, false) {}
6995
DynamicRefTable(uint8_t packageId,bool appAsLib)6996 DynamicRefTable::DynamicRefTable(uint8_t packageId, bool appAsLib)
6997 : mAssignedPackageId(packageId)
6998 , mAppAsLib(appAsLib)
6999 {
7000 memset(mLookupTable, 0, sizeof(mLookupTable));
7001
7002 // Reserved package ids
7003 mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
7004 mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
7005 }
7006
load(const ResTable_lib_header * const header)7007 status_t DynamicRefTable::load(const ResTable_lib_header* const header)
7008 {
7009 const uint32_t entryCount = dtohl(header->count);
7010 const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
7011 if (entryCount > (expectedSize / sizeof(ResTable_lib_entry))) {
7012 ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
7013 expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
7014 return UNKNOWN_ERROR;
7015 }
7016
7017 const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
7018 dtohl(header->header.headerSize));
7019 for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
7020 uint32_t packageId = dtohl(entry->packageId);
7021 char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
7022 strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
7023 if (kDebugLibNoisy) {
7024 ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
7025 dtohl(entry->packageId));
7026 }
7027 if (packageId >= 256) {
7028 ALOGE("Bad package id 0x%08x", packageId);
7029 return UNKNOWN_ERROR;
7030 }
7031 mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
7032 entry = entry + 1;
7033 }
7034 return NO_ERROR;
7035 }
7036
addMappings(const DynamicRefTable & other)7037 status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
7038 if (mAssignedPackageId != other.mAssignedPackageId) {
7039 return UNKNOWN_ERROR;
7040 }
7041
7042 const size_t entryCount = other.mEntries.size();
7043 for (size_t i = 0; i < entryCount; i++) {
7044 ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
7045 if (index < 0) {
7046 mEntries.add(String16(other.mEntries.keyAt(i)), other.mEntries[i]);
7047 } else {
7048 if (other.mEntries[i] != mEntries[index]) {
7049 return UNKNOWN_ERROR;
7050 }
7051 }
7052 }
7053
7054 // Merge the lookup table. No entry can conflict
7055 // (value of 0 means not set).
7056 for (size_t i = 0; i < 256; i++) {
7057 if (mLookupTable[i] != other.mLookupTable[i]) {
7058 if (mLookupTable[i] == 0) {
7059 mLookupTable[i] = other.mLookupTable[i];
7060 } else if (other.mLookupTable[i] != 0) {
7061 return UNKNOWN_ERROR;
7062 }
7063 }
7064 }
7065 return NO_ERROR;
7066 }
7067
addMapping(const String16 & packageName,uint8_t packageId)7068 status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
7069 {
7070 ssize_t index = mEntries.indexOfKey(packageName);
7071 if (index < 0) {
7072 return UNKNOWN_ERROR;
7073 }
7074 mLookupTable[mEntries.valueAt(index)] = packageId;
7075 return NO_ERROR;
7076 }
7077
addMapping(uint8_t buildPackageId,uint8_t runtimePackageId)7078 void DynamicRefTable::addMapping(uint8_t buildPackageId, uint8_t runtimePackageId) {
7079 mLookupTable[buildPackageId] = runtimePackageId;
7080 }
7081
addAlias(uint32_t stagedId,uint32_t finalizedId)7082 void DynamicRefTable::addAlias(uint32_t stagedId, uint32_t finalizedId) {
7083 mAliasId[stagedId] = finalizedId;
7084 }
7085
lookupResourceId(uint32_t * resId) const7086 status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
7087 uint32_t res = *resId;
7088 size_t packageId = Res_GETPACKAGE(res) + 1;
7089
7090 if (!Res_VALIDID(res)) {
7091 // Cannot look up a null or invalid id, so no lookup needs to be done.
7092 return NO_ERROR;
7093 }
7094
7095 auto alias_id = mAliasId.find(res);
7096 if (alias_id != mAliasId.end()) {
7097 // Rewrite the resource id to its alias resource id. Since the alias resource id is a
7098 // compile-time id, it still needs to be resolved further.
7099 res = alias_id->second;
7100 }
7101
7102 if (packageId == SYS_PACKAGE_ID || (packageId == APP_PACKAGE_ID && !mAppAsLib)) {
7103 // No lookup needs to be done, app and framework package IDs are absolute.
7104 *resId = res;
7105 return NO_ERROR;
7106 }
7107
7108 if (packageId == 0 || (packageId == APP_PACKAGE_ID && mAppAsLib)) {
7109 // The package ID is 0x00. That means that a shared library is accessing
7110 // its own local resource.
7111 // Or if app resource is loaded as shared library, the resource which has
7112 // app package Id is local resources.
7113 // so we fix up those resources with the calling package ID.
7114 *resId = (0xFFFFFF & (*resId)) | (((uint32_t) mAssignedPackageId) << 24);
7115 return NO_ERROR;
7116 }
7117
7118 // Do a proper lookup.
7119 uint8_t translatedId = mLookupTable[packageId];
7120 if (translatedId == 0) {
7121 ALOGW("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
7122 (uint8_t)mAssignedPackageId, (uint8_t)packageId);
7123 for (size_t i = 0; i < 256; i++) {
7124 if (mLookupTable[i] != 0) {
7125 ALOGW("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
7126 }
7127 }
7128 return UNKNOWN_ERROR;
7129 }
7130
7131 *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
7132 return NO_ERROR;
7133 }
7134
requiresLookup(const Res_value * value) const7135 bool DynamicRefTable::requiresLookup(const Res_value* value) const {
7136 // Only resolve non-dynamic references and attributes if the package is loaded as a
7137 // library or if a shared library is attempting to retrieve its own resource
7138 if ((value->dataType == Res_value::TYPE_REFERENCE ||
7139 value->dataType == Res_value::TYPE_ATTRIBUTE) &&
7140 (mAppAsLib || (Res_GETPACKAGE(value->data) + 1) == 0)) {
7141 return true;
7142 }
7143 return value->dataType == Res_value::TYPE_DYNAMIC_ATTRIBUTE ||
7144 value->dataType == Res_value::TYPE_DYNAMIC_REFERENCE;
7145 }
7146
lookupResourceValue(Res_value * value) const7147 status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
7148 if (!requiresLookup(value)) {
7149 return NO_ERROR;
7150 }
7151
7152 uint8_t resolvedType = Res_value::TYPE_REFERENCE;
7153 switch (value->dataType) {
7154 case Res_value::TYPE_ATTRIBUTE:
7155 resolvedType = Res_value::TYPE_ATTRIBUTE;
7156 FALLTHROUGH_INTENDED;
7157 case Res_value::TYPE_REFERENCE:
7158 break;
7159 case Res_value::TYPE_DYNAMIC_ATTRIBUTE:
7160 resolvedType = Res_value::TYPE_ATTRIBUTE;
7161 FALLTHROUGH_INTENDED;
7162 case Res_value::TYPE_DYNAMIC_REFERENCE:
7163 break;
7164 default:
7165 return NO_ERROR;
7166 }
7167
7168 status_t err = lookupResourceId(&value->data);
7169 if (err != NO_ERROR) {
7170 return err;
7171 }
7172
7173 value->dataType = resolvedType;
7174 return NO_ERROR;
7175 }
7176
7177 class IdmapMatchingResources;
7178
7179 class IdmapTypeMapping {
7180 public:
add(uint32_t targetResId,uint32_t overlayResId)7181 void add(uint32_t targetResId, uint32_t overlayResId) {
7182 uint8_t targetTypeId = Res_GETTYPE(targetResId);
7183 if (mData.find(targetTypeId) == mData.end()) {
7184 mData.emplace(targetTypeId, std::set<std::pair<uint32_t, uint32_t>>());
7185 }
7186 auto& entries = mData[targetTypeId];
7187 entries.insert(std::make_pair(targetResId, overlayResId));
7188 }
7189
empty() const7190 bool empty() const {
7191 return mData.empty();
7192 }
7193
7194 private:
7195 // resource type ID in context of target -> set of resource entries mapping target -> overlay
7196 std::map<uint8_t, std::set<std::pair<uint32_t, uint32_t>>> mData;
7197
7198 friend IdmapMatchingResources;
7199 };
7200
7201 class IdmapMatchingResources {
7202 public:
IdmapMatchingResources(std::unique_ptr<IdmapTypeMapping> tm)7203 IdmapMatchingResources(std::unique_ptr<IdmapTypeMapping> tm) : mTypeMapping(std::move(tm)) {
7204 assert(mTypeMapping);
7205 for (auto ti = mTypeMapping->mData.cbegin(); ti != mTypeMapping->mData.cend(); ++ti) {
7206 uint32_t lastSeen = 0xffffffff;
7207 size_t totalEntries = 0;
7208 for (auto ei = ti->second.cbegin(); ei != ti->second.cend(); ++ei) {
7209 assert(lastSeen == 0xffffffff || lastSeen < ei->first);
7210 mEntryPadding[ei->first] = (lastSeen == 0xffffffff) ? 0 : ei->first - lastSeen - 1;
7211 lastSeen = ei->first;
7212 totalEntries += 1 + mEntryPadding[ei->first];
7213 }
7214 mNumberOfEntriesIncludingPadding[ti->first] = totalEntries;
7215 }
7216 }
7217
getTypeMapping() const7218 const std::map<uint8_t, std::set<std::pair<uint32_t, uint32_t>>>& getTypeMapping() const {
7219 return mTypeMapping->mData;
7220 }
7221
getNumberOfEntriesIncludingPadding(uint8_t type) const7222 size_t getNumberOfEntriesIncludingPadding(uint8_t type) const {
7223 return mNumberOfEntriesIncludingPadding.at(type);
7224 }
7225
getPadding(uint32_t resid) const7226 size_t getPadding(uint32_t resid) const {
7227 return mEntryPadding.at(resid);
7228 }
7229
7230 private:
7231 // resource type ID in context of target -> set of resource entries mapping target -> overlay
7232 const std::unique_ptr<IdmapTypeMapping> mTypeMapping;
7233
7234 // resource ID in context of target -> trailing padding for that resource (call FixPadding
7235 // before use)
7236 std::map<uint32_t, size_t> mEntryPadding;
7237
7238 // resource type ID in context of target -> total number of entries, including padding entries,
7239 // for that type (call FixPadding before use)
7240 std::map<uint8_t, size_t> mNumberOfEntriesIncludingPadding;
7241 };
7242
createIdmap(const ResTable & targetResTable,uint32_t targetCrc,uint32_t overlayCrc,const char * targetPath,const char * overlayPath,void ** outData,size_t * outSize) const7243 status_t ResTable::createIdmap(const ResTable& targetResTable,
7244 uint32_t targetCrc, uint32_t overlayCrc,
7245 const char* targetPath, const char* overlayPath,
7246 void** outData, size_t* outSize) const
7247 {
7248 if (targetPath == NULL || overlayPath == NULL || outData == NULL || outSize == NULL) {
7249 ALOGE("idmap: unexpected NULL parameter");
7250 return UNKNOWN_ERROR;
7251 }
7252 if (strlen(targetPath) > 255) {
7253 ALOGE("idmap: target path exceeds idmap file format limit of 255 chars");
7254 return UNKNOWN_ERROR;
7255 }
7256 if (strlen(overlayPath) > 255) {
7257 ALOGE("idmap: overlay path exceeds idmap file format limit of 255 chars");
7258 return UNKNOWN_ERROR;
7259 }
7260 if (mPackageGroups.size() == 0 || mPackageGroups[0]->packages.size() == 0) {
7261 ALOGE("idmap: invalid overlay package");
7262 return UNKNOWN_ERROR;
7263 }
7264 if (targetResTable.mPackageGroups.size() == 0 ||
7265 targetResTable.mPackageGroups[0]->packages.size() == 0) {
7266 ALOGE("idmap: invalid target package");
7267 return UNKNOWN_ERROR;
7268 }
7269
7270 // Idmap is not aware of overlayable, exit since policy checks can't be done
7271 if (targetResTable.mPackageGroups[0]->packages[0]->definesOverlayable) {
7272 return UNKNOWN_ERROR;
7273 }
7274
7275 const ResTable_package* targetPackageStruct =
7276 targetResTable.mPackageGroups[0]->packages[0]->package;
7277 const size_t tmpNameSize = arraysize(targetPackageStruct->name);
7278 char16_t tmpName[tmpNameSize];
7279 strcpy16_dtoh(tmpName, targetPackageStruct->name, tmpNameSize);
7280 const String16 targetPackageName(tmpName);
7281
7282 const PackageGroup* packageGroup = mPackageGroups[0];
7283
7284 // find the resources that exist in both packages
7285 auto typeMapping = std::make_unique<IdmapTypeMapping>();
7286 for (size_t typeIndex = 0; typeIndex < packageGroup->types.size(); ++typeIndex) {
7287 const TypeList& typeList = packageGroup->types[typeIndex];
7288 if (typeList.isEmpty()) {
7289 continue;
7290 }
7291 const Type* typeConfigs = typeList[0];
7292
7293 for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
7294 uint32_t overlay_resid = Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex);
7295 resource_name current_res;
7296 if (!getResourceName(overlay_resid, false, ¤t_res)) {
7297 continue;
7298 }
7299
7300 uint32_t typeSpecFlags = 0u;
7301 const uint32_t target_resid = targetResTable.identifierForName(
7302 current_res.name,
7303 current_res.nameLen,
7304 current_res.type,
7305 current_res.typeLen,
7306 targetPackageName.string(),
7307 targetPackageName.size(),
7308 &typeSpecFlags);
7309
7310 if (target_resid == 0) {
7311 continue;
7312 }
7313
7314 typeMapping->add(target_resid, overlay_resid);
7315 }
7316 }
7317
7318 if (typeMapping->empty()) {
7319 ALOGE("idmap: no matching resources");
7320 return UNKNOWN_ERROR;
7321 }
7322
7323 const IdmapMatchingResources matchingResources(std::move(typeMapping));
7324
7325 // write idmap
7326 *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES; // magic, version, target and overlay crc
7327 *outSize += 2 * sizeof(uint16_t); // target package id, type count
7328 auto fixedTypeMapping = matchingResources.getTypeMapping();
7329 const auto typesEnd = fixedTypeMapping.cend();
7330 for (auto ti = fixedTypeMapping.cbegin(); ti != typesEnd; ++ti) {
7331 *outSize += 4 * sizeof(uint16_t); // target type, overlay type, entry count, entry offset
7332 *outSize += matchingResources.getNumberOfEntriesIncludingPadding(ti->first) *
7333 sizeof(uint32_t); // entries
7334 }
7335 if ((*outData = malloc(*outSize)) == NULL) {
7336 return NO_MEMORY;
7337 }
7338
7339 // write idmap header
7340 uint32_t* data = reinterpret_cast<uint32_t*>(*outData);
7341 *data++ = htodl(IDMAP_MAGIC); // write: magic
7342 *data++ = htodl(ResTable::IDMAP_CURRENT_VERSION); // write: version
7343 *data++ = htodl(targetCrc); // write: target crc
7344 *data++ = htodl(overlayCrc); // write: overlay crc
7345
7346 char* charData = reinterpret_cast<char*>(data);
7347 size_t pathLen = strlen(targetPath);
7348 for (size_t i = 0; i < 256; ++i) {
7349 *charData++ = i < pathLen ? targetPath[i] : '\0'; // write: target path
7350 }
7351 pathLen = strlen(overlayPath);
7352 for (size_t i = 0; i < 256; ++i) {
7353 *charData++ = i < pathLen ? overlayPath[i] : '\0'; // write: overlay path
7354 }
7355 data += (2 * 256) / sizeof(uint32_t);
7356
7357 // write idmap data header
7358 uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
7359 *typeData++ = htods(targetPackageStruct->id); // write: target package id
7360 *typeData++ =
7361 htods(static_cast<uint16_t>(fixedTypeMapping.size())); // write: type count
7362
7363 // write idmap data
7364 for (auto ti = fixedTypeMapping.cbegin(); ti != typesEnd; ++ti) {
7365 const size_t entryCount = matchingResources.getNumberOfEntriesIncludingPadding(ti->first);
7366 auto ei = ti->second.cbegin();
7367 *typeData++ = htods(Res_GETTYPE(ei->first) + 1); // write: target type id
7368 *typeData++ = htods(Res_GETTYPE(ei->second) + 1); // write: overlay type id
7369 *typeData++ = htods(entryCount); // write: entry count
7370 *typeData++ = htods(Res_GETENTRY(ei->first)); // write: (target) entry offset
7371 uint32_t *entryData = reinterpret_cast<uint32_t*>(typeData);
7372 for (; ei != ti->second.cend(); ++ei) {
7373 const size_t padding = matchingResources.getPadding(ei->first);
7374 for (size_t i = 0; i < padding; ++i) {
7375 *entryData++ = htodl(0xffffffff); // write: padding
7376 }
7377 *entryData++ = htodl(Res_GETENTRY(ei->second)); // write: (overlay) entry
7378 }
7379 typeData += entryCount * 2;
7380 }
7381
7382 return NO_ERROR;
7383 }
7384
getIdmapInfo(const void * idmap,size_t sizeBytes,uint32_t * pVersion,uint32_t * pTargetCrc,uint32_t * pOverlayCrc,String8 * pTargetPath,String8 * pOverlayPath)7385 bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
7386 uint32_t* pVersion,
7387 uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
7388 String8* pTargetPath, String8* pOverlayPath)
7389 {
7390 const uint32_t* map = (const uint32_t*)idmap;
7391 if (!assertIdmapHeader(map, sizeBytes)) {
7392 return false;
7393 }
7394 if (pVersion) {
7395 *pVersion = dtohl(map[1]);
7396 }
7397 if (pTargetCrc) {
7398 *pTargetCrc = dtohl(map[2]);
7399 }
7400 if (pOverlayCrc) {
7401 *pOverlayCrc = dtohl(map[3]);
7402 }
7403 if (pTargetPath) {
7404 pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
7405 }
7406 if (pOverlayPath) {
7407 pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
7408 }
7409 return true;
7410 }
7411
7412
7413 #define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
7414
7415 #define CHAR16_ARRAY_EQ(constant, var, len) \
7416 (((len) == (sizeof(constant)/sizeof((constant)[0]))) && (0 == memcmp((var), (constant), (len))))
7417
print_complex(uint32_t complex,bool isFraction)7418 static void print_complex(uint32_t complex, bool isFraction)
7419 {
7420 const float MANTISSA_MULT =
7421 1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
7422 const float RADIX_MULTS[] = {
7423 1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
7424 1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
7425 };
7426
7427 float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
7428 <<Res_value::COMPLEX_MANTISSA_SHIFT))
7429 * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
7430 & Res_value::COMPLEX_RADIX_MASK];
7431 printf("%f", value);
7432
7433 if (!isFraction) {
7434 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
7435 case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
7436 case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
7437 case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
7438 case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
7439 case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
7440 case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
7441 default: printf(" (unknown unit)"); break;
7442 }
7443 } else {
7444 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
7445 case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
7446 case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
7447 default: printf(" (unknown unit)"); break;
7448 }
7449 }
7450 }
7451
7452 // Normalize a string for output
normalizeForOutput(const char * input)7453 String8 ResTable::normalizeForOutput( const char *input )
7454 {
7455 String8 ret;
7456 char buff[2];
7457 buff[1] = '\0';
7458
7459 while (*input != '\0') {
7460 switch (*input) {
7461 // All interesting characters are in the ASCII zone, so we are making our own lives
7462 // easier by scanning the string one byte at a time.
7463 case '\\':
7464 ret += "\\\\";
7465 break;
7466 case '\n':
7467 ret += "\\n";
7468 break;
7469 case '"':
7470 ret += "\\\"";
7471 break;
7472 default:
7473 buff[0] = *input;
7474 ret += buff;
7475 break;
7476 }
7477
7478 input++;
7479 }
7480
7481 return ret;
7482 }
7483
print_value(const Package * pkg,const Res_value & value) const7484 void ResTable::print_value(const Package* pkg, const Res_value& value) const
7485 {
7486 if (value.dataType == Res_value::TYPE_NULL) {
7487 if (value.data == Res_value::DATA_NULL_UNDEFINED) {
7488 printf("(null)\n");
7489 } else if (value.data == Res_value::DATA_NULL_EMPTY) {
7490 printf("(null empty)\n");
7491 } else {
7492 // This should never happen.
7493 printf("(null) 0x%08x\n", value.data);
7494 }
7495 } else if (value.dataType == Res_value::TYPE_REFERENCE) {
7496 printf("(reference) 0x%08x\n", value.data);
7497 } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
7498 printf("(dynamic reference) 0x%08x\n", value.data);
7499 } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
7500 printf("(attribute) 0x%08x\n", value.data);
7501 } else if (value.dataType == Res_value::TYPE_DYNAMIC_ATTRIBUTE) {
7502 printf("(dynamic attribute) 0x%08x\n", value.data);
7503 } else if (value.dataType == Res_value::TYPE_STRING) {
7504 size_t len;
7505 const char* str8 = UnpackOptionalString(pkg->header->values.string8At(
7506 value.data), &len);
7507 if (str8 != NULL) {
7508 printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
7509 } else {
7510 const char16_t* str16 = UnpackOptionalString(pkg->header->values.stringAt(
7511 value.data), &len);
7512 if (str16 != NULL) {
7513 printf("(string16) \"%s\"\n",
7514 normalizeForOutput(String8(str16, len).string()).string());
7515 } else {
7516 printf("(string) null\n");
7517 }
7518 }
7519 } else if (value.dataType == Res_value::TYPE_FLOAT) {
7520 printf("(float) %g\n", *(const float*)&value.data);
7521 } else if (value.dataType == Res_value::TYPE_DIMENSION) {
7522 printf("(dimension) ");
7523 print_complex(value.data, false);
7524 printf("\n");
7525 } else if (value.dataType == Res_value::TYPE_FRACTION) {
7526 printf("(fraction) ");
7527 print_complex(value.data, true);
7528 printf("\n");
7529 } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
7530 && value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
7531 printf("(color) #%08x\n", value.data);
7532 } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
7533 printf("(boolean) %s\n", value.data ? "true" : "false");
7534 } else if (value.dataType >= Res_value::TYPE_FIRST_INT
7535 && value.dataType <= Res_value::TYPE_LAST_INT) {
7536 printf("(int) 0x%08x or %d\n", value.data, value.data);
7537 } else {
7538 printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
7539 (int)value.dataType, (int)value.data,
7540 (int)value.size, (int)value.res0);
7541 }
7542 }
7543
print(bool inclValues) const7544 void ResTable::print(bool inclValues) const
7545 {
7546 if (mError != 0) {
7547 printf("mError=0x%x (%s)\n", mError, strerror(mError));
7548 }
7549 size_t pgCount = mPackageGroups.size();
7550 printf("Package Groups (%d)\n", (int)pgCount);
7551 for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
7552 const PackageGroup* pg = mPackageGroups[pgIndex];
7553 printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
7554 (int)pgIndex, pg->id, (int)pg->packages.size(),
7555 String8(pg->name).string());
7556
7557 const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
7558 const size_t refEntryCount = refEntries.size();
7559 if (refEntryCount > 0) {
7560 printf(" DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
7561 for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
7562 printf(" 0x%02x -> %s\n",
7563 refEntries.valueAt(refIndex),
7564 String8(refEntries.keyAt(refIndex)).string());
7565 }
7566 printf("\n");
7567 }
7568
7569 // Determine the number of resource splits for the resource types in this package.
7570 // It needs to be done outside of the loop below so all of the information for a
7571 // is displayed in a single block. Otherwise, a resource split's resource types
7572 // would be interleaved with other splits.
7573 size_t splitCount = 0;
7574 for (size_t typeIndex = 0; typeIndex < pg->types.size(); typeIndex++) {
7575 splitCount = max(splitCount, pg->types[typeIndex].size());
7576 }
7577
7578 int packageId = pg->id;
7579 for (size_t splitIndex = 0; splitIndex < splitCount; splitIndex++) {
7580 size_t pkgCount = pg->packages.size();
7581 for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
7582 const Package* pkg = pg->packages[pkgIndex];
7583 // Use a package's real ID, since the ID may have been assigned
7584 // if this package is a shared library.
7585 packageId = pkg->package->id;
7586 char16_t tmpName[sizeof(pkg->package->name)/sizeof(pkg->package->name[0])];
7587 strcpy16_dtoh(tmpName, pkg->package->name,
7588 sizeof(pkg->package->name)/sizeof(pkg->package->name[0]));
7589 printf(" Package %d id=0x%02x name=%s\n", (int)pkgIndex,
7590 pkg->package->id, String8(tmpName).string());
7591 }
7592
7593 for (size_t typeIndex = 0; typeIndex < pg->types.size(); typeIndex++) {
7594 const TypeList& typeList = pg->types[typeIndex];
7595 if (splitIndex >= typeList.size() || typeList.isEmpty()) {
7596 // Only dump if the split exists and contains entries for this type
7597 continue;
7598 }
7599 const Type* typeConfigs = typeList[splitIndex];
7600 const size_t NTC = typeConfigs->configs.size();
7601 printf(" type %d configCount=%d entryCount=%d\n",
7602 (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
7603 if (typeConfigs->typeSpecFlags != NULL) {
7604 for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
7605 uint32_t resID = (0xff000000 & ((packageId)<<24))
7606 | (0x00ff0000 & ((typeIndex+1)<<16))
7607 | (0x0000ffff & (entryIndex));
7608 // Since we are creating resID without actually
7609 // iterating over them, we have no idea which is a
7610 // dynamic reference. We must check.
7611 if (packageId == 0) {
7612 pg->dynamicRefTable.lookupResourceId(&resID);
7613 }
7614
7615 resource_name resName;
7616 if (this->getResourceName(resID, true, &resName)) {
7617 String8 type8;
7618 String8 name8;
7619 if (resName.type8 != NULL) {
7620 type8 = String8(resName.type8, resName.typeLen);
7621 } else {
7622 type8 = String8(resName.type, resName.typeLen);
7623 }
7624 if (resName.name8 != NULL) {
7625 name8 = String8(resName.name8, resName.nameLen);
7626 } else {
7627 name8 = String8(resName.name, resName.nameLen);
7628 }
7629 printf(" spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
7630 resID,
7631 CHAR16_TO_CSTR(resName.package, resName.packageLen),
7632 type8.string(), name8.string(),
7633 dtohl(typeConfigs->typeSpecFlags[entryIndex]));
7634 } else {
7635 printf(" INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
7636 }
7637 }
7638 }
7639 for (size_t configIndex=0; configIndex<NTC; configIndex++) {
7640 const ResTable_type* type = typeConfigs->configs[configIndex];
7641 if ((((uint64_t)type)&0x3) != 0) {
7642 printf(" NON-INTEGER ResTable_type ADDRESS: %p\n", type);
7643 continue;
7644 }
7645
7646 // Always copy the config, as fields get added and we need to
7647 // set the defaults.
7648 ResTable_config thisConfig;
7649 thisConfig.copyFromDtoH(type->config);
7650
7651 String8 configStr = thisConfig.toString();
7652 printf(" config %s", configStr.size() > 0
7653 ? configStr.string() : "(default)");
7654 if (type->flags != 0u) {
7655 printf(" flags=0x%02x", type->flags);
7656 if (type->flags & ResTable_type::FLAG_SPARSE) {
7657 printf(" [sparse]");
7658 }
7659 }
7660
7661 printf(":\n");
7662
7663 size_t entryCount = dtohl(type->entryCount);
7664 uint32_t entriesStart = dtohl(type->entriesStart);
7665 if ((entriesStart&0x3) != 0) {
7666 printf(" NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n",
7667 entriesStart);
7668 continue;
7669 }
7670 uint32_t typeSize = dtohl(type->header.size);
7671 if ((typeSize&0x3) != 0) {
7672 printf(" NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
7673 continue;
7674 }
7675
7676 const uint32_t* const eindex = (const uint32_t*)
7677 (((const uint8_t*)type) + dtohs(type->header.headerSize));
7678 for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
7679 size_t entryId;
7680 uint32_t thisOffset;
7681 if (type->flags & ResTable_type::FLAG_SPARSE) {
7682 const ResTable_sparseTypeEntry* entry =
7683 reinterpret_cast<const ResTable_sparseTypeEntry*>(
7684 eindex + entryIndex);
7685 entryId = dtohs(entry->idx);
7686 // Offsets are encoded as divided by 4.
7687 thisOffset = static_cast<uint32_t>(dtohs(entry->offset)) * 4u;
7688 } else {
7689 entryId = entryIndex;
7690 thisOffset = dtohl(eindex[entryIndex]);
7691 if (thisOffset == ResTable_type::NO_ENTRY) {
7692 continue;
7693 }
7694 }
7695
7696 uint32_t resID = (0xff000000 & ((packageId)<<24))
7697 | (0x00ff0000 & ((typeIndex+1)<<16))
7698 | (0x0000ffff & (entryId));
7699 if (packageId == 0) {
7700 pg->dynamicRefTable.lookupResourceId(&resID);
7701 }
7702 resource_name resName;
7703 if (this->getResourceName(resID, true, &resName)) {
7704 String8 type8;
7705 String8 name8;
7706 if (resName.type8 != NULL) {
7707 type8 = String8(resName.type8, resName.typeLen);
7708 } else {
7709 type8 = String8(resName.type, resName.typeLen);
7710 }
7711 if (resName.name8 != NULL) {
7712 name8 = String8(resName.name8, resName.nameLen);
7713 } else {
7714 name8 = String8(resName.name, resName.nameLen);
7715 }
7716 printf(" resource 0x%08x %s:%s/%s: ", resID,
7717 CHAR16_TO_CSTR(resName.package, resName.packageLen),
7718 type8.string(), name8.string());
7719 } else {
7720 printf(" INVALID RESOURCE 0x%08x: ", resID);
7721 }
7722 if ((thisOffset&0x3) != 0) {
7723 printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
7724 continue;
7725 }
7726 if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
7727 printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
7728 entriesStart, thisOffset, typeSize);
7729 continue;
7730 }
7731
7732 const ResTable_entry* ent = (const ResTable_entry*)
7733 (((const uint8_t*)type) + entriesStart + thisOffset);
7734 if (((entriesStart + thisOffset)&0x3) != 0) {
7735 printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
7736 (entriesStart + thisOffset));
7737 continue;
7738 }
7739
7740 uintptr_t esize = dtohs(ent->size);
7741 if ((esize&0x3) != 0) {
7742 printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
7743 continue;
7744 }
7745 if ((thisOffset+esize) > typeSize) {
7746 printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
7747 entriesStart, thisOffset, (void *)esize, typeSize);
7748 continue;
7749 }
7750
7751 const Res_value* valuePtr = NULL;
7752 const ResTable_map_entry* bagPtr = NULL;
7753 Res_value value;
7754 if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
7755 printf("<bag>");
7756 bagPtr = (const ResTable_map_entry*)ent;
7757 } else {
7758 valuePtr = (const Res_value*)
7759 (((const uint8_t*)ent) + esize);
7760 value.copyFrom_dtoh(*valuePtr);
7761 printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
7762 (int)value.dataType, (int)value.data,
7763 (int)value.size, (int)value.res0);
7764 }
7765
7766 if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
7767 printf(" (PUBLIC)");
7768 }
7769 printf("\n");
7770
7771 if (inclValues) {
7772 if (valuePtr != NULL) {
7773 printf(" ");
7774 print_value(typeConfigs->package, value);
7775 } else if (bagPtr != NULL) {
7776 const int N = dtohl(bagPtr->count);
7777 const uint8_t* baseMapPtr = (const uint8_t*)ent;
7778 size_t mapOffset = esize;
7779 const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
7780 const uint32_t parent = dtohl(bagPtr->parent.ident);
7781 uint32_t resolvedParent = parent;
7782 if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
7783 status_t err =
7784 pg->dynamicRefTable.lookupResourceId(&resolvedParent);
7785 if (err != NO_ERROR) {
7786 resolvedParent = 0;
7787 }
7788 }
7789 printf(" Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
7790 parent, resolvedParent, N);
7791 for (int i=0;
7792 i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
7793 printf(" #%i (Key=0x%08x): ",
7794 i, dtohl(mapPtr->name.ident));
7795 value.copyFrom_dtoh(mapPtr->value);
7796 print_value(typeConfigs->package, value);
7797 const size_t size = dtohs(mapPtr->value.size);
7798 mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
7799 mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
7800 }
7801 }
7802 }
7803 }
7804 }
7805 }
7806 }
7807 }
7808 }
7809
7810 } // namespace android
7811