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 <limits>
29 #include <memory>
30 #include <type_traits>
31
32 #include <androidfw/ByteBucketArray.h>
33 #include <androidfw/ResourceTypes.h>
34 #include <androidfw/TypeWrappers.h>
35 #include <cutils/atomic.h>
36 #include <utils/ByteOrder.h>
37 #include <utils/Debug.h>
38 #include <utils/Log.h>
39 #include <utils/String16.h>
40 #include <utils/String8.h>
41
42 #ifdef __ANDROID__
43 #include <binder/TextOutput.h>
44 #endif
45
46 #ifndef INT32_MAX
47 #define INT32_MAX ((int32_t)(2147483647))
48 #endif
49
50 namespace android {
51
52 #if defined(_WIN32)
53 #undef nhtol
54 #undef htonl
55 #define ntohl(x) ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
56 #define htonl(x) ntohl(x)
57 #define ntohs(x) ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
58 #define htons(x) ntohs(x)
59 #endif
60
61 #define IDMAP_MAGIC 0x504D4449
62
63 #define APP_PACKAGE_ID 0x7f
64 #define SYS_PACKAGE_ID 0x01
65
66 static const bool kDebugStringPoolNoisy = false;
67 static const bool kDebugXMLNoisy = false;
68 static const bool kDebugTableNoisy = false;
69 static const bool kDebugTableGetEntry = false;
70 static const bool kDebugTableSuperNoisy = false;
71 static const bool kDebugLoadTableNoisy = false;
72 static const bool kDebugLoadTableSuperNoisy = false;
73 static const bool kDebugTableTheme = false;
74 static const bool kDebugResXMLTree = false;
75 static const bool kDebugLibNoisy = false;
76
77 // TODO: This code uses 0xFFFFFFFF converted to bag_set* as a sentinel value. This is bad practice.
78
79 // Standard C isspace() is only required to look at the low byte of its input, so
80 // produces incorrect results for UTF-16 characters. For safety's sake, assume that
81 // any high-byte UTF-16 code point is not whitespace.
isspace16(char16_t c)82 inline int isspace16(char16_t c) {
83 return (c < 0x0080 && isspace(c));
84 }
85
86 template<typename T>
max(T a,T b)87 inline static T max(T a, T b) {
88 return a > b ? a : b;
89 }
90
91 // range checked; guaranteed to NUL-terminate within the stated number of available slots
92 // NOTE: if this truncates the dst string due to running out of space, no attempt is
93 // made to avoid splitting surrogate pairs.
strcpy16_dtoh(char16_t * dst,const uint16_t * src,size_t avail)94 static void strcpy16_dtoh(char16_t* dst, const uint16_t* src, size_t avail)
95 {
96 char16_t* last = dst + avail - 1;
97 while (*src && (dst < last)) {
98 char16_t s = dtohs(static_cast<char16_t>(*src));
99 *dst++ = s;
100 src++;
101 }
102 *dst = 0;
103 }
104
validate_chunk(const ResChunk_header * chunk,size_t minSize,const uint8_t * dataEnd,const char * name)105 static status_t validate_chunk(const ResChunk_header* chunk,
106 size_t minSize,
107 const uint8_t* dataEnd,
108 const char* name)
109 {
110 const uint16_t headerSize = dtohs(chunk->headerSize);
111 const uint32_t size = dtohl(chunk->size);
112
113 if (headerSize >= minSize) {
114 if (headerSize <= size) {
115 if (((headerSize|size)&0x3) == 0) {
116 if ((size_t)size <= (size_t)(dataEnd-((const uint8_t*)chunk))) {
117 return NO_ERROR;
118 }
119 ALOGW("%s data size 0x%x extends beyond resource end %p.",
120 name, size, (void*)(dataEnd-((const uint8_t*)chunk)));
121 return BAD_TYPE;
122 }
123 ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
124 name, (int)size, (int)headerSize);
125 return BAD_TYPE;
126 }
127 ALOGW("%s size 0x%x is smaller than header size 0x%x.",
128 name, size, headerSize);
129 return BAD_TYPE;
130 }
131 ALOGW("%s header size 0x%04x is too small.",
132 name, headerSize);
133 return BAD_TYPE;
134 }
135
fill9patchOffsets(Res_png_9patch * patch)136 static void fill9patchOffsets(Res_png_9patch* patch) {
137 patch->xDivsOffset = sizeof(Res_png_9patch);
138 patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
139 patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
140 }
141
copyFrom_dtoh(const Res_value & src)142 void Res_value::copyFrom_dtoh(const Res_value& src)
143 {
144 size = dtohs(src.size);
145 res0 = src.res0;
146 dataType = src.dataType;
147 data = dtohl(src.data);
148 }
149
deviceToFile()150 void Res_png_9patch::deviceToFile()
151 {
152 int32_t* xDivs = getXDivs();
153 for (int i = 0; i < numXDivs; i++) {
154 xDivs[i] = htonl(xDivs[i]);
155 }
156 int32_t* yDivs = getYDivs();
157 for (int i = 0; i < numYDivs; i++) {
158 yDivs[i] = htonl(yDivs[i]);
159 }
160 paddingLeft = htonl(paddingLeft);
161 paddingRight = htonl(paddingRight);
162 paddingTop = htonl(paddingTop);
163 paddingBottom = htonl(paddingBottom);
164 uint32_t* colors = getColors();
165 for (int i=0; i<numColors; i++) {
166 colors[i] = htonl(colors[i]);
167 }
168 }
169
fileToDevice()170 void Res_png_9patch::fileToDevice()
171 {
172 int32_t* xDivs = getXDivs();
173 for (int i = 0; i < numXDivs; i++) {
174 xDivs[i] = ntohl(xDivs[i]);
175 }
176 int32_t* yDivs = getYDivs();
177 for (int i = 0; i < numYDivs; i++) {
178 yDivs[i] = ntohl(yDivs[i]);
179 }
180 paddingLeft = ntohl(paddingLeft);
181 paddingRight = ntohl(paddingRight);
182 paddingTop = ntohl(paddingTop);
183 paddingBottom = ntohl(paddingBottom);
184 uint32_t* colors = getColors();
185 for (int i=0; i<numColors; i++) {
186 colors[i] = ntohl(colors[i]);
187 }
188 }
189
serializedSize() const190 size_t Res_png_9patch::serializedSize() const
191 {
192 // The size of this struct is 32 bytes on the 32-bit target system
193 // 4 * int8_t
194 // 4 * int32_t
195 // 3 * uint32_t
196 return 32
197 + numXDivs * sizeof(int32_t)
198 + numYDivs * sizeof(int32_t)
199 + numColors * sizeof(uint32_t);
200 }
201
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors)202 void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
203 const int32_t* yDivs, const uint32_t* colors)
204 {
205 // Use calloc since we're going to leave a few holes in the data
206 // and want this to run cleanly under valgrind
207 void* newData = calloc(1, patch.serializedSize());
208 serialize(patch, xDivs, yDivs, colors, newData);
209 return newData;
210 }
211
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors,void * outData)212 void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
213 const int32_t* yDivs, const uint32_t* colors, void* outData)
214 {
215 uint8_t* data = (uint8_t*) outData;
216 memcpy(data, &patch.wasDeserialized, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
217 memcpy(data + 12, &patch.paddingLeft, 16); // copy paddingXXXX
218 data += 32;
219
220 memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
221 data += patch.numXDivs * sizeof(int32_t);
222 memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
223 data += patch.numYDivs * sizeof(int32_t);
224 memcpy(data, colors, patch.numColors * sizeof(uint32_t));
225
226 fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
227 }
228
assertIdmapHeader(const void * idmap,size_t size)229 static bool assertIdmapHeader(const void* idmap, size_t size) {
230 if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
231 ALOGE("idmap: header is not word aligned");
232 return false;
233 }
234
235 if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
236 ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
237 return false;
238 }
239
240 const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
241 if (magic != IDMAP_MAGIC) {
242 ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
243 magic, IDMAP_MAGIC);
244 return false;
245 }
246
247 const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
248 if (version != ResTable::IDMAP_CURRENT_VERSION) {
249 // We are strict about versions because files with this format are
250 // auto-generated and don't need backwards compatibility.
251 ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
252 version, ResTable::IDMAP_CURRENT_VERSION);
253 return false;
254 }
255 return true;
256 }
257
258 class IdmapEntries {
259 public:
IdmapEntries()260 IdmapEntries() : mData(NULL) {}
261
hasEntries() const262 bool hasEntries() const {
263 if (mData == NULL) {
264 return false;
265 }
266
267 return (dtohs(*mData) > 0);
268 }
269
byteSize() const270 size_t byteSize() const {
271 if (mData == NULL) {
272 return 0;
273 }
274 uint16_t entryCount = dtohs(mData[2]);
275 return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
276 }
277
targetTypeId() const278 uint8_t targetTypeId() const {
279 if (mData == NULL) {
280 return 0;
281 }
282 return dtohs(mData[0]);
283 }
284
overlayTypeId() const285 uint8_t overlayTypeId() const {
286 if (mData == NULL) {
287 return 0;
288 }
289 return dtohs(mData[1]);
290 }
291
setTo(const void * entryHeader,size_t size)292 status_t setTo(const void* entryHeader, size_t size) {
293 if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
294 ALOGE("idmap: entry header is not word aligned");
295 return UNKNOWN_ERROR;
296 }
297
298 if (size < sizeof(uint16_t) * 4) {
299 ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
300 return UNKNOWN_ERROR;
301 }
302
303 const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
304 const uint16_t targetTypeId = dtohs(header[0]);
305 const uint16_t overlayTypeId = dtohs(header[1]);
306 if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
307 ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
308 return UNKNOWN_ERROR;
309 }
310
311 uint16_t entryCount = dtohs(header[2]);
312 if (size < sizeof(uint32_t) * (entryCount + 2)) {
313 ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
314 (uint32_t) size, (uint32_t) entryCount);
315 return UNKNOWN_ERROR;
316 }
317 mData = header;
318 return NO_ERROR;
319 }
320
lookup(uint16_t entryId,uint16_t * outEntryId) const321 status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
322 uint16_t entryCount = dtohs(mData[2]);
323 uint16_t offset = dtohs(mData[3]);
324
325 if (entryId < offset) {
326 // The entry is not present in this idmap
327 return BAD_INDEX;
328 }
329
330 entryId -= offset;
331
332 if (entryId >= entryCount) {
333 // The entry is not present in this idmap
334 return BAD_INDEX;
335 }
336
337 // It is safe to access the type here without checking the size because
338 // we have checked this when it was first loaded.
339 const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
340 uint32_t mappedEntry = dtohl(entries[entryId]);
341 if (mappedEntry == 0xffffffff) {
342 // This entry is not present in this idmap
343 return BAD_INDEX;
344 }
345 *outEntryId = static_cast<uint16_t>(mappedEntry);
346 return NO_ERROR;
347 }
348
349 private:
350 const uint16_t* mData;
351 };
352
parseIdmap(const void * idmap,size_t size,uint8_t * outPackageId,KeyedVector<uint8_t,IdmapEntries> * outMap)353 status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
354 if (!assertIdmapHeader(idmap, size)) {
355 return UNKNOWN_ERROR;
356 }
357
358 size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
359 if (size < sizeof(uint16_t) * 2) {
360 ALOGE("idmap: too small to contain any mapping");
361 return UNKNOWN_ERROR;
362 }
363
364 const uint16_t* data = reinterpret_cast<const uint16_t*>(
365 reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
366
367 uint16_t targetPackageId = dtohs(*(data++));
368 if (targetPackageId == 0 || targetPackageId > 255) {
369 ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
370 return UNKNOWN_ERROR;
371 }
372
373 uint16_t mapCount = dtohs(*(data++));
374 if (mapCount == 0) {
375 ALOGE("idmap: no mappings");
376 return UNKNOWN_ERROR;
377 }
378
379 if (mapCount > 255) {
380 ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
381 }
382
383 while (size > sizeof(uint16_t) * 4) {
384 IdmapEntries entries;
385 status_t err = entries.setTo(data, size);
386 if (err != NO_ERROR) {
387 return err;
388 }
389
390 ssize_t index = outMap->add(entries.overlayTypeId(), entries);
391 if (index < 0) {
392 return NO_MEMORY;
393 }
394
395 data += entries.byteSize() / sizeof(uint16_t);
396 size -= entries.byteSize();
397 }
398
399 if (outPackageId != NULL) {
400 *outPackageId = static_cast<uint8_t>(targetPackageId);
401 }
402 return NO_ERROR;
403 }
404
deserialize(void * inData)405 Res_png_9patch* Res_png_9patch::deserialize(void* inData)
406 {
407
408 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
409 patch->wasDeserialized = true;
410 fill9patchOffsets(patch);
411
412 return patch;
413 }
414
415 // --------------------------------------------------------------------
416 // --------------------------------------------------------------------
417 // --------------------------------------------------------------------
418
ResStringPool()419 ResStringPool::ResStringPool()
420 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
421 {
422 }
423
ResStringPool(const void * data,size_t size,bool copyData)424 ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
425 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
426 {
427 setTo(data, size, copyData);
428 }
429
~ResStringPool()430 ResStringPool::~ResStringPool()
431 {
432 uninit();
433 }
434
setToEmpty()435 void ResStringPool::setToEmpty()
436 {
437 uninit();
438
439 mOwnedData = calloc(1, sizeof(ResStringPool_header));
440 ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
441 mSize = 0;
442 mEntries = NULL;
443 mStrings = NULL;
444 mStringPoolSize = 0;
445 mEntryStyles = NULL;
446 mStyles = NULL;
447 mStylePoolSize = 0;
448 mHeader = (const ResStringPool_header*) header;
449 }
450
setTo(const void * data,size_t size,bool copyData)451 status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
452 {
453 if (!data || !size) {
454 return (mError=BAD_TYPE);
455 }
456
457 uninit();
458
459 // The chunk must be at least the size of the string pool header.
460 if (size < sizeof(ResStringPool_header)) {
461 ALOGW("Bad string block: data size %zu is too small to be a string block", size);
462 return (mError=BAD_TYPE);
463 }
464
465 // The data is at least as big as a ResChunk_header, so we can safely validate the other
466 // header fields.
467 // `data + size` is safe because the source of `size` comes from the kernel/filesystem.
468 if (validate_chunk(reinterpret_cast<const ResChunk_header*>(data), sizeof(ResStringPool_header),
469 reinterpret_cast<const uint8_t*>(data) + size,
470 "ResStringPool_header") != NO_ERROR) {
471 ALOGW("Bad string block: malformed block dimensions");
472 return (mError=BAD_TYPE);
473 }
474
475 const bool notDeviceEndian = htods(0xf0) != 0xf0;
476
477 if (copyData || notDeviceEndian) {
478 mOwnedData = malloc(size);
479 if (mOwnedData == NULL) {
480 return (mError=NO_MEMORY);
481 }
482 memcpy(mOwnedData, data, size);
483 data = mOwnedData;
484 }
485
486 // The size has been checked, so it is safe to read the data in the ResStringPool_header
487 // data structure.
488 mHeader = (const ResStringPool_header*)data;
489
490 if (notDeviceEndian) {
491 ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
492 h->header.headerSize = dtohs(mHeader->header.headerSize);
493 h->header.type = dtohs(mHeader->header.type);
494 h->header.size = dtohl(mHeader->header.size);
495 h->stringCount = dtohl(mHeader->stringCount);
496 h->styleCount = dtohl(mHeader->styleCount);
497 h->flags = dtohl(mHeader->flags);
498 h->stringsStart = dtohl(mHeader->stringsStart);
499 h->stylesStart = dtohl(mHeader->stylesStart);
500 }
501
502 if (mHeader->header.headerSize > mHeader->header.size
503 || mHeader->header.size > size) {
504 ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
505 (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
506 return (mError=BAD_TYPE);
507 }
508 mSize = mHeader->header.size;
509 mEntries = (const uint32_t*)
510 (((const uint8_t*)data)+mHeader->header.headerSize);
511
512 if (mHeader->stringCount > 0) {
513 if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount) // uint32 overflow?
514 || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
515 > size) {
516 ALOGW("Bad string block: entry of %d items extends past data size %d\n",
517 (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
518 (int)size);
519 return (mError=BAD_TYPE);
520 }
521
522 size_t charSize;
523 if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
524 charSize = sizeof(uint8_t);
525 } else {
526 charSize = sizeof(uint16_t);
527 }
528
529 // There should be at least space for the smallest string
530 // (2 bytes length, null terminator).
531 if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
532 ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
533 (int)mHeader->stringsStart, (int)mHeader->header.size);
534 return (mError=BAD_TYPE);
535 }
536
537 mStrings = (const void*)
538 (((const uint8_t*)data) + mHeader->stringsStart);
539
540 if (mHeader->styleCount == 0) {
541 mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
542 } else {
543 // check invariant: styles starts before end of data
544 if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
545 ALOGW("Bad style block: style block starts at %d past data size of %d\n",
546 (int)mHeader->stylesStart, (int)mHeader->header.size);
547 return (mError=BAD_TYPE);
548 }
549 // check invariant: styles follow the strings
550 if (mHeader->stylesStart <= mHeader->stringsStart) {
551 ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
552 (int)mHeader->stylesStart, (int)mHeader->stringsStart);
553 return (mError=BAD_TYPE);
554 }
555 mStringPoolSize =
556 (mHeader->stylesStart-mHeader->stringsStart)/charSize;
557 }
558
559 // check invariant: stringCount > 0 requires a string pool to exist
560 if (mStringPoolSize == 0) {
561 ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
562 return (mError=BAD_TYPE);
563 }
564
565 if (notDeviceEndian) {
566 size_t i;
567 uint32_t* e = const_cast<uint32_t*>(mEntries);
568 for (i=0; i<mHeader->stringCount; i++) {
569 e[i] = dtohl(mEntries[i]);
570 }
571 if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
572 const uint16_t* strings = (const uint16_t*)mStrings;
573 uint16_t* s = const_cast<uint16_t*>(strings);
574 for (i=0; i<mStringPoolSize; i++) {
575 s[i] = dtohs(strings[i]);
576 }
577 }
578 }
579
580 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
581 ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
582 (!(mHeader->flags&ResStringPool_header::UTF8_FLAG) &&
583 ((uint16_t*)mStrings)[mStringPoolSize-1] != 0)) {
584 ALOGW("Bad string block: last string is not 0-terminated\n");
585 return (mError=BAD_TYPE);
586 }
587 } else {
588 mStrings = NULL;
589 mStringPoolSize = 0;
590 }
591
592 if (mHeader->styleCount > 0) {
593 mEntryStyles = mEntries + mHeader->stringCount;
594 // invariant: integer overflow in calculating mEntryStyles
595 if (mEntryStyles < mEntries) {
596 ALOGW("Bad string block: integer overflow finding styles\n");
597 return (mError=BAD_TYPE);
598 }
599
600 if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
601 ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
602 (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
603 (int)size);
604 return (mError=BAD_TYPE);
605 }
606 mStyles = (const uint32_t*)
607 (((const uint8_t*)data)+mHeader->stylesStart);
608 if (mHeader->stylesStart >= mHeader->header.size) {
609 ALOGW("Bad string block: style pool starts %d, after total size %d\n",
610 (int)mHeader->stylesStart, (int)mHeader->header.size);
611 return (mError=BAD_TYPE);
612 }
613 mStylePoolSize =
614 (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
615
616 if (notDeviceEndian) {
617 size_t i;
618 uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
619 for (i=0; i<mHeader->styleCount; i++) {
620 e[i] = dtohl(mEntryStyles[i]);
621 }
622 uint32_t* s = const_cast<uint32_t*>(mStyles);
623 for (i=0; i<mStylePoolSize; i++) {
624 s[i] = dtohl(mStyles[i]);
625 }
626 }
627
628 const ResStringPool_span endSpan = {
629 { htodl(ResStringPool_span::END) },
630 htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
631 };
632 if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
633 &endSpan, sizeof(endSpan)) != 0) {
634 ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
635 return (mError=BAD_TYPE);
636 }
637 } else {
638 mEntryStyles = NULL;
639 mStyles = NULL;
640 mStylePoolSize = 0;
641 }
642
643 return (mError=NO_ERROR);
644 }
645
getError() const646 status_t ResStringPool::getError() const
647 {
648 return mError;
649 }
650
uninit()651 void ResStringPool::uninit()
652 {
653 mError = NO_INIT;
654 if (mHeader != NULL && mCache != NULL) {
655 for (size_t x = 0; x < mHeader->stringCount; x++) {
656 if (mCache[x] != NULL) {
657 free(mCache[x]);
658 mCache[x] = NULL;
659 }
660 }
661 free(mCache);
662 mCache = NULL;
663 }
664 if (mOwnedData) {
665 free(mOwnedData);
666 mOwnedData = NULL;
667 }
668 }
669
670 /**
671 * Strings in UTF-16 format have length indicated by a length encoded in the
672 * stored data. It is either 1 or 2 characters of length data. This allows a
673 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
674 * much data in a string, you're abusing them.
675 *
676 * If the high bit is set, then there are two characters or 4 bytes of length
677 * data encoded. In that case, drop the high bit of the first character and
678 * add it together with the next character.
679 */
680 static inline size_t
decodeLength(const uint16_t ** str)681 decodeLength(const uint16_t** str)
682 {
683 size_t len = **str;
684 if ((len & 0x8000) != 0) {
685 (*str)++;
686 len = ((len & 0x7FFF) << 16) | **str;
687 }
688 (*str)++;
689 return len;
690 }
691
692 /**
693 * Strings in UTF-8 format have length indicated by a length encoded in the
694 * stored data. It is either 1 or 2 characters of length data. This allows a
695 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
696 * text in another way if you're using that much data in a single string.
697 *
698 * If the high bit is set, then there are two characters or 2 bytes of length
699 * data encoded. In that case, drop the high bit of the first character and
700 * add it together with the next character.
701 */
702 static inline size_t
decodeLength(const uint8_t ** str)703 decodeLength(const uint8_t** str)
704 {
705 size_t len = **str;
706 if ((len & 0x80) != 0) {
707 (*str)++;
708 len = ((len & 0x7F) << 8) | **str;
709 }
710 (*str)++;
711 return len;
712 }
713
stringAt(size_t idx,size_t * u16len) const714 const char16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
715 {
716 if (mError == NO_ERROR && idx < mHeader->stringCount) {
717 const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
718 const uint32_t off = mEntries[idx]/(isUTF8?sizeof(uint8_t):sizeof(uint16_t));
719 if (off < (mStringPoolSize-1)) {
720 if (!isUTF8) {
721 const uint16_t* strings = (uint16_t*)mStrings;
722 const uint16_t* str = strings+off;
723
724 *u16len = decodeLength(&str);
725 if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
726 // Reject malformed (non null-terminated) strings
727 if (str[*u16len] != 0x0000) {
728 ALOGW("Bad string block: string #%d is not null-terminated",
729 (int)idx);
730 return NULL;
731 }
732 return reinterpret_cast<const char16_t*>(str);
733 } else {
734 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
735 (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
736 }
737 } else {
738 const uint8_t* strings = (uint8_t*)mStrings;
739 const uint8_t* u8str = strings+off;
740
741 *u16len = decodeLength(&u8str);
742 size_t u8len = decodeLength(&u8str);
743
744 // encLen must be less than 0x7FFF due to encoding.
745 if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
746 AutoMutex lock(mDecodeLock);
747
748 if (mCache != NULL && mCache[idx] != NULL) {
749 return mCache[idx];
750 }
751
752 // Retrieve the actual length of the utf8 string if the
753 // encoded length was truncated
754 if (stringDecodeAt(idx, u8str, u8len, &u8len) == NULL) {
755 return NULL;
756 }
757
758 // Since AAPT truncated lengths longer than 0x7FFF, check
759 // that the bits that remain after truncation at least match
760 // the bits of the actual length
761 ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
762 if (actualLen < 0 || ((size_t)actualLen & 0x7FFF) != *u16len) {
763 ALOGW("Bad string block: string #%lld decoded length is not correct "
764 "%lld vs %llu\n",
765 (long long)idx, (long long)actualLen, (long long)*u16len);
766 return NULL;
767 }
768
769 *u16len = (size_t) actualLen;
770 char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
771 if (!u16str) {
772 ALOGW("No memory when trying to allocate decode cache for string #%d\n",
773 (int)idx);
774 return NULL;
775 }
776
777 utf8_to_utf16(u8str, u8len, u16str, *u16len + 1);
778
779 if (mCache == NULL) {
780 #ifndef __ANDROID__
781 if (kDebugStringPoolNoisy) {
782 ALOGI("CREATING STRING CACHE OF %zu bytes",
783 mHeader->stringCount*sizeof(char16_t**));
784 }
785 #else
786 // We do not want to be in this case when actually running Android.
787 ALOGW("CREATING STRING CACHE OF %zu bytes",
788 static_cast<size_t>(mHeader->stringCount*sizeof(char16_t**)));
789 #endif
790 mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t*));
791 if (mCache == NULL) {
792 ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
793 (int)(mHeader->stringCount*sizeof(char16_t**)));
794 return NULL;
795 }
796 }
797
798 if (kDebugStringPoolNoisy) {
799 ALOGI("Caching UTF8 string: %s", u8str);
800 }
801
802 mCache[idx] = u16str;
803 return u16str;
804 } else {
805 ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
806 (long long)idx, (long long)(u8str+u8len-strings),
807 (long long)mStringPoolSize);
808 }
809 }
810 } else {
811 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
812 (int)idx, (int)(off*sizeof(uint16_t)),
813 (int)(mStringPoolSize*sizeof(uint16_t)));
814 }
815 }
816 return NULL;
817 }
818
string8At(size_t idx,size_t * outLen) const819 const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
820 {
821 if (mError == NO_ERROR && idx < mHeader->stringCount) {
822 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
823 return NULL;
824 }
825 const uint32_t off = mEntries[idx]/sizeof(char);
826 if (off < (mStringPoolSize-1)) {
827 const uint8_t* strings = (uint8_t*)mStrings;
828 const uint8_t* str = strings+off;
829
830 // Decode the UTF-16 length. This is not used if we're not
831 // converting to UTF-16 from UTF-8.
832 decodeLength(&str);
833
834 const size_t encLen = decodeLength(&str);
835 *outLen = encLen;
836
837 if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
838 return stringDecodeAt(idx, str, encLen, outLen);
839
840 } else {
841 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
842 (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
843 }
844 } else {
845 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
846 (int)idx, (int)(off*sizeof(uint16_t)),
847 (int)(mStringPoolSize*sizeof(uint16_t)));
848 }
849 }
850 return NULL;
851 }
852
853 /**
854 * AAPT incorrectly writes a truncated string length when the string size
855 * exceeded the maximum possible encode length value (0x7FFF). To decode a
856 * truncated length, iterate through length values that end in the encode length
857 * bits. Strings that exceed the maximum encode length are not placed into
858 * StringPools in AAPT2.
859 **/
stringDecodeAt(size_t idx,const uint8_t * str,const size_t encLen,size_t * outLen) const860 const char* ResStringPool::stringDecodeAt(size_t idx, const uint8_t* str,
861 const size_t encLen, size_t* outLen) const {
862 const uint8_t* strings = (uint8_t*)mStrings;
863
864 size_t i = 0, end = encLen;
865 while ((uint32_t)(str+end-strings) < mStringPoolSize) {
866 if (str[end] == 0x00) {
867 if (i != 0) {
868 ALOGW("Bad string block: string #%d is truncated (actual length is %d)",
869 (int)idx, (int)end);
870 }
871
872 *outLen = end;
873 return (const char*)str;
874 }
875
876 end = (++i << (sizeof(uint8_t) * 8 * 2 - 1)) | encLen;
877 }
878
879 // Reject malformed (non null-terminated) strings
880 ALOGW("Bad string block: string #%d is not null-terminated",
881 (int)idx);
882 return NULL;
883 }
884
string8ObjectAt(size_t idx) const885 const String8 ResStringPool::string8ObjectAt(size_t idx) const
886 {
887 size_t len;
888 const char *str = string8At(idx, &len);
889 if (str != NULL) {
890 return String8(str, len);
891 }
892
893 const char16_t *str16 = stringAt(idx, &len);
894 if (str16 != NULL) {
895 return String8(str16, len);
896 }
897 return String8();
898 }
899
styleAt(const ResStringPool_ref & ref) const900 const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
901 {
902 return styleAt(ref.index);
903 }
904
styleAt(size_t idx) const905 const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
906 {
907 if (mError == NO_ERROR && idx < mHeader->styleCount) {
908 const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
909 if (off < mStylePoolSize) {
910 return (const ResStringPool_span*)(mStyles+off);
911 } else {
912 ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
913 (int)idx, (int)(off*sizeof(uint32_t)),
914 (int)(mStylePoolSize*sizeof(uint32_t)));
915 }
916 }
917 return NULL;
918 }
919
indexOfString(const char16_t * str,size_t strLen) const920 ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
921 {
922 if (mError != NO_ERROR) {
923 return mError;
924 }
925
926 size_t len;
927
928 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
929 if (kDebugStringPoolNoisy) {
930 ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string());
931 }
932
933 // The string pool contains UTF 8 strings; we don't want to cause
934 // temporary UTF-16 strings to be created as we search.
935 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
936 // Do a binary search for the string... this is a little tricky,
937 // because the strings are sorted with strzcmp16(). So to match
938 // the ordering, we need to convert strings in the pool to UTF-16.
939 // But we don't want to hit the cache, so instead we will have a
940 // local temporary allocation for the conversions.
941 size_t convBufferLen = strLen + 4;
942 char16_t* convBuffer = (char16_t*)calloc(convBufferLen, sizeof(char16_t));
943 ssize_t l = 0;
944 ssize_t h = mHeader->stringCount-1;
945
946 ssize_t mid;
947 while (l <= h) {
948 mid = l + (h - l)/2;
949 const uint8_t* s = (const uint8_t*)string8At(mid, &len);
950 int c;
951 if (s != NULL) {
952 char16_t* end = utf8_to_utf16(s, len, convBuffer, convBufferLen);
953 c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
954 } else {
955 c = -1;
956 }
957 if (kDebugStringPoolNoisy) {
958 ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
959 (const char*)s, c, (int)l, (int)mid, (int)h);
960 }
961 if (c == 0) {
962 if (kDebugStringPoolNoisy) {
963 ALOGI("MATCH!");
964 }
965 free(convBuffer);
966 return mid;
967 } else if (c < 0) {
968 l = mid + 1;
969 } else {
970 h = mid - 1;
971 }
972 }
973 free(convBuffer);
974 } else {
975 // It is unusual to get the ID from an unsorted string block...
976 // most often this happens because we want to get IDs for style
977 // span tags; since those always appear at the end of the string
978 // block, start searching at the back.
979 String8 str8(str, strLen);
980 const size_t str8Len = str8.size();
981 for (int i=mHeader->stringCount-1; i>=0; i--) {
982 const char* s = string8At(i, &len);
983 if (kDebugStringPoolNoisy) {
984 ALOGI("Looking at %s, i=%d\n", String8(s).string(), i);
985 }
986 if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
987 if (kDebugStringPoolNoisy) {
988 ALOGI("MATCH!");
989 }
990 return i;
991 }
992 }
993 }
994
995 } else {
996 if (kDebugStringPoolNoisy) {
997 ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string());
998 }
999
1000 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
1001 // Do a binary search for the string...
1002 ssize_t l = 0;
1003 ssize_t h = mHeader->stringCount-1;
1004
1005 ssize_t mid;
1006 while (l <= h) {
1007 mid = l + (h - l)/2;
1008 const char16_t* s = stringAt(mid, &len);
1009 int c = s ? strzcmp16(s, len, str, strLen) : -1;
1010 if (kDebugStringPoolNoisy) {
1011 ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
1012 String8(s).string(), c, (int)l, (int)mid, (int)h);
1013 }
1014 if (c == 0) {
1015 if (kDebugStringPoolNoisy) {
1016 ALOGI("MATCH!");
1017 }
1018 return mid;
1019 } else if (c < 0) {
1020 l = mid + 1;
1021 } else {
1022 h = mid - 1;
1023 }
1024 }
1025 } else {
1026 // It is unusual to get the ID from an unsorted string block...
1027 // most often this happens because we want to get IDs for style
1028 // span tags; since those always appear at the end of the string
1029 // block, start searching at the back.
1030 for (int i=mHeader->stringCount-1; i>=0; i--) {
1031 const char16_t* s = stringAt(i, &len);
1032 if (kDebugStringPoolNoisy) {
1033 ALOGI("Looking at %s, i=%d\n", String8(s).string(), i);
1034 }
1035 if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
1036 if (kDebugStringPoolNoisy) {
1037 ALOGI("MATCH!");
1038 }
1039 return i;
1040 }
1041 }
1042 }
1043 }
1044
1045 return NAME_NOT_FOUND;
1046 }
1047
size() const1048 size_t ResStringPool::size() const
1049 {
1050 return (mError == NO_ERROR) ? mHeader->stringCount : 0;
1051 }
1052
styleCount() const1053 size_t ResStringPool::styleCount() const
1054 {
1055 return (mError == NO_ERROR) ? mHeader->styleCount : 0;
1056 }
1057
bytes() const1058 size_t ResStringPool::bytes() const
1059 {
1060 return (mError == NO_ERROR) ? mHeader->header.size : 0;
1061 }
1062
isSorted() const1063 bool ResStringPool::isSorted() const
1064 {
1065 return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
1066 }
1067
isUTF8() const1068 bool ResStringPool::isUTF8() const
1069 {
1070 return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
1071 }
1072
1073 // --------------------------------------------------------------------
1074 // --------------------------------------------------------------------
1075 // --------------------------------------------------------------------
1076
ResXMLParser(const ResXMLTree & tree)1077 ResXMLParser::ResXMLParser(const ResXMLTree& tree)
1078 : mTree(tree), mEventCode(BAD_DOCUMENT)
1079 {
1080 }
1081
restart()1082 void ResXMLParser::restart()
1083 {
1084 mCurNode = NULL;
1085 mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
1086 }
getStrings() const1087 const ResStringPool& ResXMLParser::getStrings() const
1088 {
1089 return mTree.mStrings;
1090 }
1091
getEventType() const1092 ResXMLParser::event_code_t ResXMLParser::getEventType() const
1093 {
1094 return mEventCode;
1095 }
1096
next()1097 ResXMLParser::event_code_t ResXMLParser::next()
1098 {
1099 if (mEventCode == START_DOCUMENT) {
1100 mCurNode = mTree.mRootNode;
1101 mCurExt = mTree.mRootExt;
1102 return (mEventCode=mTree.mRootCode);
1103 } else if (mEventCode >= FIRST_CHUNK_CODE) {
1104 return nextNode();
1105 }
1106 return mEventCode;
1107 }
1108
getCommentID() const1109 int32_t ResXMLParser::getCommentID() const
1110 {
1111 return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1112 }
1113
getComment(size_t * outLen) const1114 const char16_t* ResXMLParser::getComment(size_t* outLen) const
1115 {
1116 int32_t id = getCommentID();
1117 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1118 }
1119
getLineNumber() const1120 uint32_t ResXMLParser::getLineNumber() const
1121 {
1122 return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1123 }
1124
getTextID() const1125 int32_t ResXMLParser::getTextID() const
1126 {
1127 if (mEventCode == TEXT) {
1128 return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1129 }
1130 return -1;
1131 }
1132
getText(size_t * outLen) const1133 const char16_t* ResXMLParser::getText(size_t* outLen) const
1134 {
1135 int32_t id = getTextID();
1136 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1137 }
1138
getTextValue(Res_value * outValue) const1139 ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1140 {
1141 if (mEventCode == TEXT) {
1142 outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1143 return sizeof(Res_value);
1144 }
1145 return BAD_TYPE;
1146 }
1147
getNamespacePrefixID() const1148 int32_t ResXMLParser::getNamespacePrefixID() const
1149 {
1150 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1151 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1152 }
1153 return -1;
1154 }
1155
getNamespacePrefix(size_t * outLen) const1156 const char16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1157 {
1158 int32_t id = getNamespacePrefixID();
1159 //printf("prefix=%d event=%p\n", id, mEventCode);
1160 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1161 }
1162
getNamespaceUriID() const1163 int32_t ResXMLParser::getNamespaceUriID() const
1164 {
1165 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1166 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1167 }
1168 return -1;
1169 }
1170
getNamespaceUri(size_t * outLen) const1171 const char16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1172 {
1173 int32_t id = getNamespaceUriID();
1174 //printf("uri=%d event=%p\n", id, mEventCode);
1175 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1176 }
1177
getElementNamespaceID() const1178 int32_t ResXMLParser::getElementNamespaceID() const
1179 {
1180 if (mEventCode == START_TAG) {
1181 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1182 }
1183 if (mEventCode == END_TAG) {
1184 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1185 }
1186 return -1;
1187 }
1188
getElementNamespace(size_t * outLen) const1189 const char16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1190 {
1191 int32_t id = getElementNamespaceID();
1192 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1193 }
1194
getElementNameID() const1195 int32_t ResXMLParser::getElementNameID() const
1196 {
1197 if (mEventCode == START_TAG) {
1198 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1199 }
1200 if (mEventCode == END_TAG) {
1201 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1202 }
1203 return -1;
1204 }
1205
getElementName(size_t * outLen) const1206 const char16_t* ResXMLParser::getElementName(size_t* outLen) const
1207 {
1208 int32_t id = getElementNameID();
1209 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1210 }
1211
getAttributeCount() const1212 size_t ResXMLParser::getAttributeCount() const
1213 {
1214 if (mEventCode == START_TAG) {
1215 return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1216 }
1217 return 0;
1218 }
1219
getAttributeNamespaceID(size_t idx) const1220 int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1221 {
1222 if (mEventCode == START_TAG) {
1223 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1224 if (idx < dtohs(tag->attributeCount)) {
1225 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1226 (((const uint8_t*)tag)
1227 + dtohs(tag->attributeStart)
1228 + (dtohs(tag->attributeSize)*idx));
1229 return dtohl(attr->ns.index);
1230 }
1231 }
1232 return -2;
1233 }
1234
getAttributeNamespace(size_t idx,size_t * outLen) const1235 const char16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1236 {
1237 int32_t id = getAttributeNamespaceID(idx);
1238 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1239 if (kDebugXMLNoisy) {
1240 printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1241 }
1242 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1243 }
1244
getAttributeNamespace8(size_t idx,size_t * outLen) const1245 const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1246 {
1247 int32_t id = getAttributeNamespaceID(idx);
1248 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1249 if (kDebugXMLNoisy) {
1250 printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1251 }
1252 return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1253 }
1254
getAttributeNameID(size_t idx) const1255 int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1256 {
1257 if (mEventCode == START_TAG) {
1258 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1259 if (idx < dtohs(tag->attributeCount)) {
1260 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1261 (((const uint8_t*)tag)
1262 + dtohs(tag->attributeStart)
1263 + (dtohs(tag->attributeSize)*idx));
1264 return dtohl(attr->name.index);
1265 }
1266 }
1267 return -1;
1268 }
1269
getAttributeName(size_t idx,size_t * outLen) const1270 const char16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1271 {
1272 int32_t id = getAttributeNameID(idx);
1273 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1274 if (kDebugXMLNoisy) {
1275 printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1276 }
1277 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1278 }
1279
getAttributeName8(size_t idx,size_t * outLen) const1280 const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1281 {
1282 int32_t id = getAttributeNameID(idx);
1283 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1284 if (kDebugXMLNoisy) {
1285 printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1286 }
1287 return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1288 }
1289
getAttributeNameResID(size_t idx) const1290 uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1291 {
1292 int32_t id = getAttributeNameID(idx);
1293 if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1294 uint32_t resId = dtohl(mTree.mResIds[id]);
1295 if (mTree.mDynamicRefTable != NULL) {
1296 mTree.mDynamicRefTable->lookupResourceId(&resId);
1297 }
1298 return resId;
1299 }
1300 return 0;
1301 }
1302
getAttributeValueStringID(size_t idx) const1303 int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1304 {
1305 if (mEventCode == START_TAG) {
1306 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1307 if (idx < dtohs(tag->attributeCount)) {
1308 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1309 (((const uint8_t*)tag)
1310 + dtohs(tag->attributeStart)
1311 + (dtohs(tag->attributeSize)*idx));
1312 return dtohl(attr->rawValue.index);
1313 }
1314 }
1315 return -1;
1316 }
1317
getAttributeStringValue(size_t idx,size_t * outLen) const1318 const char16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1319 {
1320 int32_t id = getAttributeValueStringID(idx);
1321 if (kDebugXMLNoisy) {
1322 printf("getAttributeValue 0x%zx=0x%x\n", idx, id);
1323 }
1324 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1325 }
1326
getAttributeDataType(size_t idx) const1327 int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1328 {
1329 if (mEventCode == START_TAG) {
1330 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1331 if (idx < dtohs(tag->attributeCount)) {
1332 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1333 (((const uint8_t*)tag)
1334 + dtohs(tag->attributeStart)
1335 + (dtohs(tag->attributeSize)*idx));
1336 uint8_t type = attr->typedValue.dataType;
1337 if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1338 return type;
1339 }
1340
1341 // This is a dynamic reference. We adjust those references
1342 // to regular references at this level, so lie to the caller.
1343 return Res_value::TYPE_REFERENCE;
1344 }
1345 }
1346 return Res_value::TYPE_NULL;
1347 }
1348
getAttributeData(size_t idx) const1349 int32_t ResXMLParser::getAttributeData(size_t idx) const
1350 {
1351 if (mEventCode == START_TAG) {
1352 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1353 if (idx < dtohs(tag->attributeCount)) {
1354 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1355 (((const uint8_t*)tag)
1356 + dtohs(tag->attributeStart)
1357 + (dtohs(tag->attributeSize)*idx));
1358 if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1359 mTree.mDynamicRefTable == NULL) {
1360 return dtohl(attr->typedValue.data);
1361 }
1362
1363 uint32_t data = dtohl(attr->typedValue.data);
1364 if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1365 return data;
1366 }
1367 }
1368 }
1369 return 0;
1370 }
1371
getAttributeValue(size_t idx,Res_value * outValue) const1372 ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1373 {
1374 if (mEventCode == START_TAG) {
1375 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1376 if (idx < dtohs(tag->attributeCount)) {
1377 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1378 (((const uint8_t*)tag)
1379 + dtohs(tag->attributeStart)
1380 + (dtohs(tag->attributeSize)*idx));
1381 outValue->copyFrom_dtoh(attr->typedValue);
1382 if (mTree.mDynamicRefTable != NULL &&
1383 mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1384 return BAD_TYPE;
1385 }
1386 return sizeof(Res_value);
1387 }
1388 }
1389 return BAD_TYPE;
1390 }
1391
indexOfAttribute(const char * ns,const char * attr) const1392 ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1393 {
1394 String16 nsStr(ns != NULL ? ns : "");
1395 String16 attrStr(attr);
1396 return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1397 attrStr.string(), attrStr.size());
1398 }
1399
indexOfAttribute(const char16_t * ns,size_t nsLen,const char16_t * attr,size_t attrLen) const1400 ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1401 const char16_t* attr, size_t attrLen) const
1402 {
1403 if (mEventCode == START_TAG) {
1404 if (attr == NULL) {
1405 return NAME_NOT_FOUND;
1406 }
1407 const size_t N = getAttributeCount();
1408 if (mTree.mStrings.isUTF8()) {
1409 String8 ns8, attr8;
1410 if (ns != NULL) {
1411 ns8 = String8(ns, nsLen);
1412 }
1413 attr8 = String8(attr, attrLen);
1414 if (kDebugStringPoolNoisy) {
1415 ALOGI("indexOfAttribute UTF8 %s (%zu) / %s (%zu)", ns8.string(), nsLen,
1416 attr8.string(), attrLen);
1417 }
1418 for (size_t i=0; i<N; i++) {
1419 size_t curNsLen = 0, curAttrLen = 0;
1420 const char* curNs = getAttributeNamespace8(i, &curNsLen);
1421 const char* curAttr = getAttributeName8(i, &curAttrLen);
1422 if (kDebugStringPoolNoisy) {
1423 ALOGI(" curNs=%s (%zu), curAttr=%s (%zu)", curNs, curNsLen, curAttr, curAttrLen);
1424 }
1425 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1426 && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1427 if (ns == NULL) {
1428 if (curNs == NULL) {
1429 if (kDebugStringPoolNoisy) {
1430 ALOGI(" FOUND!");
1431 }
1432 return i;
1433 }
1434 } else if (curNs != NULL) {
1435 //printf(" --> ns=%s, curNs=%s\n",
1436 // String8(ns).string(), String8(curNs).string());
1437 if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1438 if (kDebugStringPoolNoisy) {
1439 ALOGI(" FOUND!");
1440 }
1441 return i;
1442 }
1443 }
1444 }
1445 }
1446 } else {
1447 if (kDebugStringPoolNoisy) {
1448 ALOGI("indexOfAttribute UTF16 %s (%zu) / %s (%zu)",
1449 String8(ns, nsLen).string(), nsLen,
1450 String8(attr, attrLen).string(), attrLen);
1451 }
1452 for (size_t i=0; i<N; i++) {
1453 size_t curNsLen = 0, curAttrLen = 0;
1454 const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1455 const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1456 if (kDebugStringPoolNoisy) {
1457 ALOGI(" curNs=%s (%zu), curAttr=%s (%zu)",
1458 String8(curNs, curNsLen).string(), curNsLen,
1459 String8(curAttr, curAttrLen).string(), curAttrLen);
1460 }
1461 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1462 && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1463 if (ns == NULL) {
1464 if (curNs == NULL) {
1465 if (kDebugStringPoolNoisy) {
1466 ALOGI(" FOUND!");
1467 }
1468 return i;
1469 }
1470 } else if (curNs != NULL) {
1471 //printf(" --> ns=%s, curNs=%s\n",
1472 // String8(ns).string(), String8(curNs).string());
1473 if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1474 if (kDebugStringPoolNoisy) {
1475 ALOGI(" FOUND!");
1476 }
1477 return i;
1478 }
1479 }
1480 }
1481 }
1482 }
1483 }
1484
1485 return NAME_NOT_FOUND;
1486 }
1487
indexOfID() const1488 ssize_t ResXMLParser::indexOfID() const
1489 {
1490 if (mEventCode == START_TAG) {
1491 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1492 if (idx > 0) return (idx-1);
1493 }
1494 return NAME_NOT_FOUND;
1495 }
1496
indexOfClass() const1497 ssize_t ResXMLParser::indexOfClass() const
1498 {
1499 if (mEventCode == START_TAG) {
1500 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1501 if (idx > 0) return (idx-1);
1502 }
1503 return NAME_NOT_FOUND;
1504 }
1505
indexOfStyle() const1506 ssize_t ResXMLParser::indexOfStyle() const
1507 {
1508 if (mEventCode == START_TAG) {
1509 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1510 if (idx > 0) return (idx-1);
1511 }
1512 return NAME_NOT_FOUND;
1513 }
1514
nextNode()1515 ResXMLParser::event_code_t ResXMLParser::nextNode()
1516 {
1517 if (mEventCode < 0) {
1518 return mEventCode;
1519 }
1520
1521 do {
1522 const ResXMLTree_node* next = (const ResXMLTree_node*)
1523 (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1524 if (kDebugXMLNoisy) {
1525 ALOGI("Next node: prev=%p, next=%p\n", mCurNode, next);
1526 }
1527
1528 if (((const uint8_t*)next) >= mTree.mDataEnd) {
1529 mCurNode = NULL;
1530 return (mEventCode=END_DOCUMENT);
1531 }
1532
1533 if (mTree.validateNode(next) != NO_ERROR) {
1534 mCurNode = NULL;
1535 return (mEventCode=BAD_DOCUMENT);
1536 }
1537
1538 mCurNode = next;
1539 const uint16_t headerSize = dtohs(next->header.headerSize);
1540 const uint32_t totalSize = dtohl(next->header.size);
1541 mCurExt = ((const uint8_t*)next) + headerSize;
1542 size_t minExtSize = 0;
1543 event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1544 switch ((mEventCode=eventCode)) {
1545 case RES_XML_START_NAMESPACE_TYPE:
1546 case RES_XML_END_NAMESPACE_TYPE:
1547 minExtSize = sizeof(ResXMLTree_namespaceExt);
1548 break;
1549 case RES_XML_START_ELEMENT_TYPE:
1550 minExtSize = sizeof(ResXMLTree_attrExt);
1551 break;
1552 case RES_XML_END_ELEMENT_TYPE:
1553 minExtSize = sizeof(ResXMLTree_endElementExt);
1554 break;
1555 case RES_XML_CDATA_TYPE:
1556 minExtSize = sizeof(ResXMLTree_cdataExt);
1557 break;
1558 default:
1559 ALOGW("Unknown XML block: header type %d in node at %d\n",
1560 (int)dtohs(next->header.type),
1561 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1562 continue;
1563 }
1564
1565 if ((totalSize-headerSize) < minExtSize) {
1566 ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1567 (int)dtohs(next->header.type),
1568 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1569 (int)(totalSize-headerSize), (int)minExtSize);
1570 return (mEventCode=BAD_DOCUMENT);
1571 }
1572
1573 //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1574 // mCurNode, mCurExt, headerSize, minExtSize);
1575
1576 return eventCode;
1577 } while (true);
1578 }
1579
getPosition(ResXMLParser::ResXMLPosition * pos) const1580 void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1581 {
1582 pos->eventCode = mEventCode;
1583 pos->curNode = mCurNode;
1584 pos->curExt = mCurExt;
1585 }
1586
setPosition(const ResXMLParser::ResXMLPosition & pos)1587 void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1588 {
1589 mEventCode = pos.eventCode;
1590 mCurNode = pos.curNode;
1591 mCurExt = pos.curExt;
1592 }
1593
1594 // --------------------------------------------------------------------
1595
1596 static volatile int32_t gCount = 0;
1597
ResXMLTree(const DynamicRefTable * dynamicRefTable)1598 ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1599 : ResXMLParser(*this)
1600 , mDynamicRefTable((dynamicRefTable != nullptr) ? dynamicRefTable->clone()
1601 : std::unique_ptr<DynamicRefTable>(nullptr))
1602 , mError(NO_INIT), mOwnedData(NULL)
1603 {
1604 if (kDebugResXMLTree) {
1605 ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1606 }
1607 restart();
1608 }
1609
ResXMLTree()1610 ResXMLTree::ResXMLTree()
1611 : ResXMLParser(*this)
1612 , mDynamicRefTable(std::unique_ptr<DynamicRefTable>(nullptr))
1613 , mError(NO_INIT), mOwnedData(NULL)
1614 {
1615 if (kDebugResXMLTree) {
1616 ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1617 }
1618 restart();
1619 }
1620
~ResXMLTree()1621 ResXMLTree::~ResXMLTree()
1622 {
1623 if (kDebugResXMLTree) {
1624 ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1625 }
1626 uninit();
1627 }
1628
setTo(const void * data,size_t size,bool copyData)1629 status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1630 {
1631 uninit();
1632 mEventCode = START_DOCUMENT;
1633
1634 if (!data || !size) {
1635 return (mError=BAD_TYPE);
1636 }
1637
1638 if (copyData) {
1639 mOwnedData = malloc(size);
1640 if (mOwnedData == NULL) {
1641 return (mError=NO_MEMORY);
1642 }
1643 memcpy(mOwnedData, data, size);
1644 data = mOwnedData;
1645 }
1646
1647 mHeader = (const ResXMLTree_header*)data;
1648 mSize = dtohl(mHeader->header.size);
1649 if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1650 ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1651 (int)dtohs(mHeader->header.headerSize),
1652 (int)dtohl(mHeader->header.size), (int)size);
1653 mError = BAD_TYPE;
1654 restart();
1655 return mError;
1656 }
1657 mDataEnd = ((const uint8_t*)mHeader) + mSize;
1658
1659 mStrings.uninit();
1660 mRootNode = NULL;
1661 mResIds = NULL;
1662 mNumResIds = 0;
1663
1664 // First look for a couple interesting chunks: the string block
1665 // and first XML node.
1666 const ResChunk_header* chunk =
1667 (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1668 const ResChunk_header* lastChunk = chunk;
1669 while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1670 ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1671 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1672 if (err != NO_ERROR) {
1673 mError = err;
1674 goto done;
1675 }
1676 const uint16_t type = dtohs(chunk->type);
1677 const size_t size = dtohl(chunk->size);
1678 if (kDebugXMLNoisy) {
1679 printf("Scanning @ %p: type=0x%x, size=0x%zx\n",
1680 (void*)(((uintptr_t)chunk)-((uintptr_t)mHeader)), type, size);
1681 }
1682 if (type == RES_STRING_POOL_TYPE) {
1683 mStrings.setTo(chunk, size);
1684 } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1685 mResIds = (const uint32_t*)
1686 (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1687 mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1688 } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1689 && type <= RES_XML_LAST_CHUNK_TYPE) {
1690 if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1691 mError = BAD_TYPE;
1692 goto done;
1693 }
1694 mCurNode = (const ResXMLTree_node*)lastChunk;
1695 if (nextNode() == BAD_DOCUMENT) {
1696 mError = BAD_TYPE;
1697 goto done;
1698 }
1699 mRootNode = mCurNode;
1700 mRootExt = mCurExt;
1701 mRootCode = mEventCode;
1702 break;
1703 } else {
1704 if (kDebugXMLNoisy) {
1705 printf("Skipping unknown chunk!\n");
1706 }
1707 }
1708 lastChunk = chunk;
1709 chunk = (const ResChunk_header*)
1710 (((const uint8_t*)chunk) + size);
1711 }
1712
1713 if (mRootNode == NULL) {
1714 ALOGW("Bad XML block: no root element node found\n");
1715 mError = BAD_TYPE;
1716 goto done;
1717 }
1718
1719 mError = mStrings.getError();
1720
1721 done:
1722 restart();
1723 return mError;
1724 }
1725
getError() const1726 status_t ResXMLTree::getError() const
1727 {
1728 return mError;
1729 }
1730
uninit()1731 void ResXMLTree::uninit()
1732 {
1733 mError = NO_INIT;
1734 mStrings.uninit();
1735 if (mOwnedData) {
1736 free(mOwnedData);
1737 mOwnedData = NULL;
1738 }
1739 restart();
1740 }
1741
validateNode(const ResXMLTree_node * node) const1742 status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1743 {
1744 const uint16_t eventCode = dtohs(node->header.type);
1745
1746 status_t err = validate_chunk(
1747 &node->header, sizeof(ResXMLTree_node),
1748 mDataEnd, "ResXMLTree_node");
1749
1750 if (err >= NO_ERROR) {
1751 // Only perform additional validation on START nodes
1752 if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1753 return NO_ERROR;
1754 }
1755
1756 const uint16_t headerSize = dtohs(node->header.headerSize);
1757 const uint32_t size = dtohl(node->header.size);
1758 const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1759 (((const uint8_t*)node) + headerSize);
1760 // check for sensical values pulled out of the stream so far...
1761 if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1762 && ((void*)attrExt > (void*)node)) {
1763 const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1764 * dtohs(attrExt->attributeCount);
1765 if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1766 return NO_ERROR;
1767 }
1768 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1769 (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1770 (unsigned int)(size-headerSize));
1771 }
1772 else {
1773 ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1774 (unsigned int)headerSize, (unsigned int)size);
1775 }
1776 return BAD_TYPE;
1777 }
1778
1779 return err;
1780
1781 #if 0
1782 const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1783
1784 const uint16_t headerSize = dtohs(node->header.headerSize);
1785 const uint32_t size = dtohl(node->header.size);
1786
1787 if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1788 if (size >= headerSize) {
1789 if (((const uint8_t*)node) <= (mDataEnd-size)) {
1790 if (!isStart) {
1791 return NO_ERROR;
1792 }
1793 if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1794 <= (size-headerSize)) {
1795 return NO_ERROR;
1796 }
1797 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1798 ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1799 (int)(size-headerSize));
1800 return BAD_TYPE;
1801 }
1802 ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1803 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1804 return BAD_TYPE;
1805 }
1806 ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1807 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1808 (int)headerSize, (int)size);
1809 return BAD_TYPE;
1810 }
1811 ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1812 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1813 (int)headerSize);
1814 return BAD_TYPE;
1815 #endif
1816 }
1817
1818 // --------------------------------------------------------------------
1819 // --------------------------------------------------------------------
1820 // --------------------------------------------------------------------
1821
copyFromDeviceNoSwap(const ResTable_config & o)1822 void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1823 const size_t size = dtohl(o.size);
1824 if (size >= sizeof(ResTable_config)) {
1825 *this = o;
1826 } else {
1827 memcpy(this, &o, size);
1828 memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1829 }
1830 }
1831
unpackLanguageOrRegion(const char in[2],const char base,char out[4])1832 /* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1833 char out[4]) {
1834 if (in[0] & 0x80) {
1835 // The high bit is "1", which means this is a packed three letter
1836 // language code.
1837
1838 // The smallest 5 bits of the second char are the first alphabet.
1839 const uint8_t first = in[1] & 0x1f;
1840 // The last three bits of the second char and the first two bits
1841 // of the first char are the second alphabet.
1842 const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1843 // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1844 const uint8_t third = (in[0] & 0x7c) >> 2;
1845
1846 out[0] = first + base;
1847 out[1] = second + base;
1848 out[2] = third + base;
1849 out[3] = 0;
1850
1851 return 3;
1852 }
1853
1854 if (in[0]) {
1855 memcpy(out, in, 2);
1856 memset(out + 2, 0, 2);
1857 return 2;
1858 }
1859
1860 memset(out, 0, 4);
1861 return 0;
1862 }
1863
packLanguageOrRegion(const char * in,const char base,char out[2])1864 /* static */ void packLanguageOrRegion(const char* in, const char base,
1865 char out[2]) {
1866 if (in[2] == 0 || in[2] == '-') {
1867 out[0] = in[0];
1868 out[1] = in[1];
1869 } else {
1870 uint8_t first = (in[0] - base) & 0x007f;
1871 uint8_t second = (in[1] - base) & 0x007f;
1872 uint8_t third = (in[2] - base) & 0x007f;
1873
1874 out[0] = (0x80 | (third << 2) | (second >> 3));
1875 out[1] = ((second << 5) | first);
1876 }
1877 }
1878
1879
packLanguage(const char * language)1880 void ResTable_config::packLanguage(const char* language) {
1881 packLanguageOrRegion(language, 'a', this->language);
1882 }
1883
packRegion(const char * region)1884 void ResTable_config::packRegion(const char* region) {
1885 packLanguageOrRegion(region, '0', this->country);
1886 }
1887
unpackLanguage(char language[4]) const1888 size_t ResTable_config::unpackLanguage(char language[4]) const {
1889 return unpackLanguageOrRegion(this->language, 'a', language);
1890 }
1891
unpackRegion(char region[4]) const1892 size_t ResTable_config::unpackRegion(char region[4]) const {
1893 return unpackLanguageOrRegion(this->country, '0', region);
1894 }
1895
1896
copyFromDtoH(const ResTable_config & o)1897 void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1898 copyFromDeviceNoSwap(o);
1899 size = sizeof(ResTable_config);
1900 mcc = dtohs(mcc);
1901 mnc = dtohs(mnc);
1902 density = dtohs(density);
1903 screenWidth = dtohs(screenWidth);
1904 screenHeight = dtohs(screenHeight);
1905 sdkVersion = dtohs(sdkVersion);
1906 minorVersion = dtohs(minorVersion);
1907 smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1908 screenWidthDp = dtohs(screenWidthDp);
1909 screenHeightDp = dtohs(screenHeightDp);
1910 }
1911
swapHtoD()1912 void ResTable_config::swapHtoD() {
1913 size = htodl(size);
1914 mcc = htods(mcc);
1915 mnc = htods(mnc);
1916 density = htods(density);
1917 screenWidth = htods(screenWidth);
1918 screenHeight = htods(screenHeight);
1919 sdkVersion = htods(sdkVersion);
1920 minorVersion = htods(minorVersion);
1921 smallestScreenWidthDp = htods(smallestScreenWidthDp);
1922 screenWidthDp = htods(screenWidthDp);
1923 screenHeightDp = htods(screenHeightDp);
1924 }
1925
compareLocales(const ResTable_config & l,const ResTable_config & r)1926 /* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1927 if (l.locale != r.locale) {
1928 return (l.locale > r.locale) ? 1 : -1;
1929 }
1930
1931 // The language & region are equal, so compare the scripts, variants and
1932 // numbering systms in this order. Comparison of variants and numbering
1933 // systems should happen very infrequently (if at all.)
1934 // The comparison code relies on memcmp low-level optimizations that make it
1935 // more efficient than strncmp.
1936 const char emptyScript[sizeof(l.localeScript)] = {'\0', '\0', '\0', '\0'};
1937 const char *lScript = l.localeScriptWasComputed ? emptyScript : l.localeScript;
1938 const char *rScript = r.localeScriptWasComputed ? emptyScript : r.localeScript;
1939
1940 int script = memcmp(lScript, rScript, sizeof(l.localeScript));
1941 if (script) {
1942 return script;
1943 }
1944
1945 int variant = memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1946 if (variant) {
1947 return variant;
1948 }
1949
1950 return memcmp(l.localeNumberingSystem, r.localeNumberingSystem,
1951 sizeof(l.localeNumberingSystem));
1952 }
1953
compare(const ResTable_config & o) const1954 int ResTable_config::compare(const ResTable_config& o) const {
1955 if (imsi != o.imsi) {
1956 return (imsi > o.imsi) ? 1 : -1;
1957 }
1958
1959 int32_t diff = compareLocales(*this, o);
1960 if (diff < 0) {
1961 return -1;
1962 }
1963 if (diff > 0) {
1964 return 1;
1965 }
1966
1967 if (screenType != o.screenType) {
1968 return (screenType > o.screenType) ? 1 : -1;
1969 }
1970 if (input != o.input) {
1971 return (input > o.input) ? 1 : -1;
1972 }
1973 if (screenSize != o.screenSize) {
1974 return (screenSize > o.screenSize) ? 1 : -1;
1975 }
1976 if (version != o.version) {
1977 return (version > o.version) ? 1 : -1;
1978 }
1979 if (screenLayout != o.screenLayout) {
1980 return (screenLayout > o.screenLayout) ? 1 : -1;
1981 }
1982 if (screenLayout2 != o.screenLayout2) {
1983 return (screenLayout2 > o.screenLayout2) ? 1 : -1;
1984 }
1985 if (colorMode != o.colorMode) {
1986 return (colorMode > o.colorMode) ? 1 : -1;
1987 }
1988 if (uiMode != o.uiMode) {
1989 return (uiMode > o.uiMode) ? 1 : -1;
1990 }
1991 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1992 return (smallestScreenWidthDp > o.smallestScreenWidthDp) ? 1 : -1;
1993 }
1994 if (screenSizeDp != o.screenSizeDp) {
1995 return (screenSizeDp > o.screenSizeDp) ? 1 : -1;
1996 }
1997 return 0;
1998 }
1999
compareLogical(const ResTable_config & o) const2000 int ResTable_config::compareLogical(const ResTable_config& o) const {
2001 if (mcc != o.mcc) {
2002 return mcc < o.mcc ? -1 : 1;
2003 }
2004 if (mnc != o.mnc) {
2005 return mnc < o.mnc ? -1 : 1;
2006 }
2007
2008 int diff = compareLocales(*this, o);
2009 if (diff < 0) {
2010 return -1;
2011 }
2012 if (diff > 0) {
2013 return 1;
2014 }
2015
2016 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
2017 return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
2018 }
2019 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2020 return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
2021 }
2022 if (screenWidthDp != o.screenWidthDp) {
2023 return screenWidthDp < o.screenWidthDp ? -1 : 1;
2024 }
2025 if (screenHeightDp != o.screenHeightDp) {
2026 return screenHeightDp < o.screenHeightDp ? -1 : 1;
2027 }
2028 if (screenWidth != o.screenWidth) {
2029 return screenWidth < o.screenWidth ? -1 : 1;
2030 }
2031 if (screenHeight != o.screenHeight) {
2032 return screenHeight < o.screenHeight ? -1 : 1;
2033 }
2034 if (density != o.density) {
2035 return density < o.density ? -1 : 1;
2036 }
2037 if (orientation != o.orientation) {
2038 return orientation < o.orientation ? -1 : 1;
2039 }
2040 if (touchscreen != o.touchscreen) {
2041 return touchscreen < o.touchscreen ? -1 : 1;
2042 }
2043 if (input != o.input) {
2044 return input < o.input ? -1 : 1;
2045 }
2046 if (screenLayout != o.screenLayout) {
2047 return screenLayout < o.screenLayout ? -1 : 1;
2048 }
2049 if (screenLayout2 != o.screenLayout2) {
2050 return screenLayout2 < o.screenLayout2 ? -1 : 1;
2051 }
2052 if (colorMode != o.colorMode) {
2053 return colorMode < o.colorMode ? -1 : 1;
2054 }
2055 if (uiMode != o.uiMode) {
2056 return uiMode < o.uiMode ? -1 : 1;
2057 }
2058 if (version != o.version) {
2059 return version < o.version ? -1 : 1;
2060 }
2061 return 0;
2062 }
2063
diff(const ResTable_config & o) const2064 int ResTable_config::diff(const ResTable_config& o) const {
2065 int diffs = 0;
2066 if (mcc != o.mcc) diffs |= CONFIG_MCC;
2067 if (mnc != o.mnc) diffs |= CONFIG_MNC;
2068 if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
2069 if (density != o.density) diffs |= CONFIG_DENSITY;
2070 if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
2071 if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
2072 diffs |= CONFIG_KEYBOARD_HIDDEN;
2073 if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
2074 if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
2075 if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
2076 if (version != o.version) diffs |= CONFIG_VERSION;
2077 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
2078 if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
2079 if ((screenLayout2 & MASK_SCREENROUND) != (o.screenLayout2 & MASK_SCREENROUND)) diffs |= CONFIG_SCREEN_ROUND;
2080 if ((colorMode & MASK_WIDE_COLOR_GAMUT) != (o.colorMode & MASK_WIDE_COLOR_GAMUT)) diffs |= CONFIG_COLOR_MODE;
2081 if ((colorMode & MASK_HDR) != (o.colorMode & MASK_HDR)) diffs |= CONFIG_COLOR_MODE;
2082 if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
2083 if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
2084 if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
2085
2086 const int diff = compareLocales(*this, o);
2087 if (diff) diffs |= CONFIG_LOCALE;
2088
2089 return diffs;
2090 }
2091
2092 // There isn't a well specified "importance" order between variants and
2093 // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
2094 // specific than "en-US-POSIX".
2095 //
2096 // We therefore arbitrarily decide to give priority to variants over
2097 // scripts since it seems more useful to do so. We will consider
2098 // "en-US-POSIX" to be more specific than "en-Latn-US".
2099 //
2100 // Unicode extension keywords are considered to be less important than
2101 // scripts and variants.
getImportanceScoreOfLocale() const2102 inline int ResTable_config::getImportanceScoreOfLocale() const {
2103 return (localeVariant[0] ? 4 : 0)
2104 + (localeScript[0] && !localeScriptWasComputed ? 2: 0)
2105 + (localeNumberingSystem[0] ? 1: 0);
2106 }
2107
isLocaleMoreSpecificThan(const ResTable_config & o) const2108 int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
2109 if (locale || o.locale) {
2110 if (language[0] != o.language[0]) {
2111 if (!language[0]) return -1;
2112 if (!o.language[0]) return 1;
2113 }
2114
2115 if (country[0] != o.country[0]) {
2116 if (!country[0]) return -1;
2117 if (!o.country[0]) return 1;
2118 }
2119 }
2120
2121 return getImportanceScoreOfLocale() - o.getImportanceScoreOfLocale();
2122 }
2123
isMoreSpecificThan(const ResTable_config & o) const2124 bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
2125 // The order of the following tests defines the importance of one
2126 // configuration parameter over another. Those tests first are more
2127 // important, trumping any values in those following them.
2128 if (imsi || o.imsi) {
2129 if (mcc != o.mcc) {
2130 if (!mcc) return false;
2131 if (!o.mcc) return true;
2132 }
2133
2134 if (mnc != o.mnc) {
2135 if (!mnc) return false;
2136 if (!o.mnc) return true;
2137 }
2138 }
2139
2140 if (locale || o.locale) {
2141 const int diff = isLocaleMoreSpecificThan(o);
2142 if (diff < 0) {
2143 return false;
2144 }
2145
2146 if (diff > 0) {
2147 return true;
2148 }
2149 }
2150
2151 if (screenLayout || o.screenLayout) {
2152 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
2153 if (!(screenLayout & MASK_LAYOUTDIR)) return false;
2154 if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
2155 }
2156 }
2157
2158 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2159 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2160 if (!smallestScreenWidthDp) return false;
2161 if (!o.smallestScreenWidthDp) return true;
2162 }
2163 }
2164
2165 if (screenSizeDp || o.screenSizeDp) {
2166 if (screenWidthDp != o.screenWidthDp) {
2167 if (!screenWidthDp) return false;
2168 if (!o.screenWidthDp) return true;
2169 }
2170
2171 if (screenHeightDp != o.screenHeightDp) {
2172 if (!screenHeightDp) return false;
2173 if (!o.screenHeightDp) return true;
2174 }
2175 }
2176
2177 if (screenLayout || o.screenLayout) {
2178 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
2179 if (!(screenLayout & MASK_SCREENSIZE)) return false;
2180 if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2181 }
2182 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2183 if (!(screenLayout & MASK_SCREENLONG)) return false;
2184 if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2185 }
2186 }
2187
2188 if (screenLayout2 || o.screenLayout2) {
2189 if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0) {
2190 if (!(screenLayout2 & MASK_SCREENROUND)) return false;
2191 if (!(o.screenLayout2 & MASK_SCREENROUND)) return true;
2192 }
2193 }
2194
2195 if (colorMode || o.colorMode) {
2196 if (((colorMode^o.colorMode) & MASK_HDR) != 0) {
2197 if (!(colorMode & MASK_HDR)) return false;
2198 if (!(o.colorMode & MASK_HDR)) return true;
2199 }
2200 if (((colorMode^o.colorMode) & MASK_WIDE_COLOR_GAMUT) != 0) {
2201 if (!(colorMode & MASK_WIDE_COLOR_GAMUT)) return false;
2202 if (!(o.colorMode & MASK_WIDE_COLOR_GAMUT)) return true;
2203 }
2204 }
2205
2206 if (orientation != o.orientation) {
2207 if (!orientation) return false;
2208 if (!o.orientation) return true;
2209 }
2210
2211 if (uiMode || o.uiMode) {
2212 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2213 if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2214 if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2215 }
2216 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2217 if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2218 if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2219 }
2220 }
2221
2222 // density is never 'more specific'
2223 // as the default just equals 160
2224
2225 if (touchscreen != o.touchscreen) {
2226 if (!touchscreen) return false;
2227 if (!o.touchscreen) return true;
2228 }
2229
2230 if (input || o.input) {
2231 if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2232 if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2233 if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2234 }
2235
2236 if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2237 if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2238 if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2239 }
2240
2241 if (keyboard != o.keyboard) {
2242 if (!keyboard) return false;
2243 if (!o.keyboard) return true;
2244 }
2245
2246 if (navigation != o.navigation) {
2247 if (!navigation) return false;
2248 if (!o.navigation) return true;
2249 }
2250 }
2251
2252 if (screenSize || o.screenSize) {
2253 if (screenWidth != o.screenWidth) {
2254 if (!screenWidth) return false;
2255 if (!o.screenWidth) return true;
2256 }
2257
2258 if (screenHeight != o.screenHeight) {
2259 if (!screenHeight) return false;
2260 if (!o.screenHeight) return true;
2261 }
2262 }
2263
2264 if (version || o.version) {
2265 if (sdkVersion != o.sdkVersion) {
2266 if (!sdkVersion) return false;
2267 if (!o.sdkVersion) return true;
2268 }
2269
2270 if (minorVersion != o.minorVersion) {
2271 if (!minorVersion) return false;
2272 if (!o.minorVersion) return true;
2273 }
2274 }
2275 return false;
2276 }
2277
2278 // Codes for specially handled languages and regions
2279 static const char kEnglish[2] = {'e', 'n'}; // packed version of "en"
2280 static const char kUnitedStates[2] = {'U', 'S'}; // packed version of "US"
2281 static const char kFilipino[2] = {'\xAD', '\x05'}; // packed version of "fil"
2282 static const char kTagalog[2] = {'t', 'l'}; // packed version of "tl"
2283
2284 // Checks if two language or region codes are identical
areIdentical(const char code1[2],const char code2[2])2285 inline bool areIdentical(const char code1[2], const char code2[2]) {
2286 return code1[0] == code2[0] && code1[1] == code2[1];
2287 }
2288
langsAreEquivalent(const char lang1[2],const char lang2[2])2289 inline bool langsAreEquivalent(const char lang1[2], const char lang2[2]) {
2290 return areIdentical(lang1, lang2) ||
2291 (areIdentical(lang1, kTagalog) && areIdentical(lang2, kFilipino)) ||
2292 (areIdentical(lang1, kFilipino) && areIdentical(lang2, kTagalog));
2293 }
2294
isLocaleBetterThan(const ResTable_config & o,const ResTable_config * requested) const2295 bool ResTable_config::isLocaleBetterThan(const ResTable_config& o,
2296 const ResTable_config* requested) const {
2297 if (requested->locale == 0) {
2298 // The request doesn't have a locale, so no resource is better
2299 // than the other.
2300 return false;
2301 }
2302
2303 if (locale == 0 && o.locale == 0) {
2304 // The locale part of both resources is empty, so none is better
2305 // than the other.
2306 return false;
2307 }
2308
2309 // Non-matching locales have been filtered out, so both resources
2310 // match the requested locale.
2311 //
2312 // Because of the locale-related checks in match() and the checks, we know
2313 // that:
2314 // 1) The resource languages are either empty or match the request;
2315 // and
2316 // 2) If the request's script is known, the resource scripts are either
2317 // unknown or match the request.
2318
2319 if (!langsAreEquivalent(language, o.language)) {
2320 // The languages of the two resources are not equivalent. If we are
2321 // here, we can only assume that the two resources matched the request
2322 // because one doesn't have a language and the other has a matching
2323 // language.
2324 //
2325 // We consider the one that has the language specified a better match.
2326 //
2327 // The exception is that we consider no-language resources a better match
2328 // for US English and similar locales than locales that are a descendant
2329 // of Internatinal English (en-001), since no-language resources are
2330 // where the US English resource have traditionally lived for most apps.
2331 if (areIdentical(requested->language, kEnglish)) {
2332 if (areIdentical(requested->country, kUnitedStates)) {
2333 // For US English itself, we consider a no-locale resource a
2334 // better match if the other resource has a country other than
2335 // US specified.
2336 if (language[0] != '\0') {
2337 return country[0] == '\0' || areIdentical(country, kUnitedStates);
2338 } else {
2339 return !(o.country[0] == '\0' || areIdentical(o.country, kUnitedStates));
2340 }
2341 } else if (localeDataIsCloseToUsEnglish(requested->country)) {
2342 if (language[0] != '\0') {
2343 return localeDataIsCloseToUsEnglish(country);
2344 } else {
2345 return !localeDataIsCloseToUsEnglish(o.country);
2346 }
2347 }
2348 }
2349 return (language[0] != '\0');
2350 }
2351
2352 // If we are here, both the resources have an equivalent non-empty language
2353 // to the request.
2354 //
2355 // Because the languages are equivalent, computeScript() always returns a
2356 // non-empty script for languages it knows about, and we have passed the
2357 // script checks in match(), the scripts are either all unknown or are all
2358 // the same. So we can't gain anything by checking the scripts. We need to
2359 // check the region and variant.
2360
2361 // See if any of the regions is better than the other.
2362 const int region_comparison = localeDataCompareRegions(
2363 country, o.country,
2364 requested->language, requested->localeScript, requested->country);
2365 if (region_comparison != 0) {
2366 return (region_comparison > 0);
2367 }
2368
2369 // The regions are the same. Try the variant.
2370 const bool localeMatches = strncmp(
2371 localeVariant, requested->localeVariant, sizeof(localeVariant)) == 0;
2372 const bool otherMatches = strncmp(
2373 o.localeVariant, requested->localeVariant, sizeof(localeVariant)) == 0;
2374 if (localeMatches != otherMatches) {
2375 return localeMatches;
2376 }
2377
2378 // The variants are the same, try numbering system.
2379 const bool localeNumsysMatches = strncmp(localeNumberingSystem,
2380 requested->localeNumberingSystem,
2381 sizeof(localeNumberingSystem)) == 0;
2382 const bool otherNumsysMatches = strncmp(o.localeNumberingSystem,
2383 requested->localeNumberingSystem,
2384 sizeof(localeNumberingSystem)) == 0;
2385 if (localeNumsysMatches != otherNumsysMatches) {
2386 return localeNumsysMatches;
2387 }
2388
2389 // Finally, the languages, although equivalent, may still be different
2390 // (like for Tagalog and Filipino). Identical is better than just
2391 // equivalent.
2392 if (areIdentical(language, requested->language)
2393 && !areIdentical(o.language, requested->language)) {
2394 return true;
2395 }
2396
2397 return false;
2398 }
2399
isBetterThan(const ResTable_config & o,const ResTable_config * requested) const2400 bool ResTable_config::isBetterThan(const ResTable_config& o,
2401 const ResTable_config* requested) const {
2402 if (requested) {
2403 if (imsi || o.imsi) {
2404 if ((mcc != o.mcc) && requested->mcc) {
2405 return (mcc);
2406 }
2407
2408 if ((mnc != o.mnc) && requested->mnc) {
2409 return (mnc);
2410 }
2411 }
2412
2413 if (isLocaleBetterThan(o, requested)) {
2414 return true;
2415 }
2416
2417 if (screenLayout || o.screenLayout) {
2418 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2419 && (requested->screenLayout & MASK_LAYOUTDIR)) {
2420 int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2421 int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2422 return (myLayoutDir > oLayoutDir);
2423 }
2424 }
2425
2426 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2427 // The configuration closest to the actual size is best.
2428 // We assume that larger configs have already been filtered
2429 // out at this point. That means we just want the largest one.
2430 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2431 return smallestScreenWidthDp > o.smallestScreenWidthDp;
2432 }
2433 }
2434
2435 if (screenSizeDp || o.screenSizeDp) {
2436 // "Better" is based on the sum of the difference between both
2437 // width and height from the requested dimensions. We are
2438 // assuming the invalid configs (with smaller dimens) have
2439 // already been filtered. Note that if a particular dimension
2440 // is unspecified, we will end up with a large value (the
2441 // difference between 0 and the requested dimension), which is
2442 // good since we will prefer a config that has specified a
2443 // dimension value.
2444 int myDelta = 0, otherDelta = 0;
2445 if (requested->screenWidthDp) {
2446 myDelta += requested->screenWidthDp - screenWidthDp;
2447 otherDelta += requested->screenWidthDp - o.screenWidthDp;
2448 }
2449 if (requested->screenHeightDp) {
2450 myDelta += requested->screenHeightDp - screenHeightDp;
2451 otherDelta += requested->screenHeightDp - o.screenHeightDp;
2452 }
2453 if (kDebugTableSuperNoisy) {
2454 ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2455 screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2456 requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2457 }
2458 if (myDelta != otherDelta) {
2459 return myDelta < otherDelta;
2460 }
2461 }
2462
2463 if (screenLayout || o.screenLayout) {
2464 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2465 && (requested->screenLayout & MASK_SCREENSIZE)) {
2466 // A little backwards compatibility here: undefined is
2467 // considered equivalent to normal. But only if the
2468 // requested size is at least normal; otherwise, small
2469 // is better than the default.
2470 int mySL = (screenLayout & MASK_SCREENSIZE);
2471 int oSL = (o.screenLayout & MASK_SCREENSIZE);
2472 int fixedMySL = mySL;
2473 int fixedOSL = oSL;
2474 if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2475 if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2476 if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2477 }
2478 // For screen size, the best match is the one that is
2479 // closest to the requested screen size, but not over
2480 // (the not over part is dealt with in match() below).
2481 if (fixedMySL == fixedOSL) {
2482 // If the two are the same, but 'this' is actually
2483 // undefined, then the other is really a better match.
2484 if (mySL == 0) return false;
2485 return true;
2486 }
2487 if (fixedMySL != fixedOSL) {
2488 return fixedMySL > fixedOSL;
2489 }
2490 }
2491 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2492 && (requested->screenLayout & MASK_SCREENLONG)) {
2493 return (screenLayout & MASK_SCREENLONG);
2494 }
2495 }
2496
2497 if (screenLayout2 || o.screenLayout2) {
2498 if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0 &&
2499 (requested->screenLayout2 & MASK_SCREENROUND)) {
2500 return screenLayout2 & MASK_SCREENROUND;
2501 }
2502 }
2503
2504 if (colorMode || o.colorMode) {
2505 if (((colorMode^o.colorMode) & MASK_WIDE_COLOR_GAMUT) != 0 &&
2506 (requested->colorMode & MASK_WIDE_COLOR_GAMUT)) {
2507 return colorMode & MASK_WIDE_COLOR_GAMUT;
2508 }
2509 if (((colorMode^o.colorMode) & MASK_HDR) != 0 &&
2510 (requested->colorMode & MASK_HDR)) {
2511 return colorMode & MASK_HDR;
2512 }
2513 }
2514
2515 if ((orientation != o.orientation) && requested->orientation) {
2516 return (orientation);
2517 }
2518
2519 if (uiMode || o.uiMode) {
2520 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2521 && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2522 return (uiMode & MASK_UI_MODE_TYPE);
2523 }
2524 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2525 && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2526 return (uiMode & MASK_UI_MODE_NIGHT);
2527 }
2528 }
2529
2530 if (screenType || o.screenType) {
2531 if (density != o.density) {
2532 // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2533 const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2534 const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2535
2536 // We always prefer DENSITY_ANY over scaling a density bucket.
2537 if (thisDensity == ResTable_config::DENSITY_ANY) {
2538 return true;
2539 } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2540 return false;
2541 }
2542
2543 int requestedDensity = requested->density;
2544 if (requested->density == 0 ||
2545 requested->density == ResTable_config::DENSITY_ANY) {
2546 requestedDensity = ResTable_config::DENSITY_MEDIUM;
2547 }
2548
2549 // DENSITY_ANY is now dealt with. We should look to
2550 // pick a density bucket and potentially scale it.
2551 // Any density is potentially useful
2552 // because the system will scale it. Scaling down
2553 // is generally better than scaling up.
2554 int h = thisDensity;
2555 int l = otherDensity;
2556 bool bImBigger = true;
2557 if (l > h) {
2558 int t = h;
2559 h = l;
2560 l = t;
2561 bImBigger = false;
2562 }
2563
2564 if (requestedDensity >= h) {
2565 // requested value higher than both l and h, give h
2566 return bImBigger;
2567 }
2568 if (l >= requestedDensity) {
2569 // requested value lower than both l and h, give l
2570 return !bImBigger;
2571 }
2572 // saying that scaling down is 2x better than up
2573 if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2574 return !bImBigger;
2575 } else {
2576 return bImBigger;
2577 }
2578 }
2579
2580 if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2581 return (touchscreen);
2582 }
2583 }
2584
2585 if (input || o.input) {
2586 const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2587 const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2588 if (keysHidden != oKeysHidden) {
2589 const int reqKeysHidden =
2590 requested->inputFlags & MASK_KEYSHIDDEN;
2591 if (reqKeysHidden) {
2592
2593 if (!keysHidden) return false;
2594 if (!oKeysHidden) return true;
2595 // For compatibility, we count KEYSHIDDEN_NO as being
2596 // the same as KEYSHIDDEN_SOFT. Here we disambiguate
2597 // these by making an exact match more specific.
2598 if (reqKeysHidden == keysHidden) return true;
2599 if (reqKeysHidden == oKeysHidden) return false;
2600 }
2601 }
2602
2603 const int navHidden = inputFlags & MASK_NAVHIDDEN;
2604 const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2605 if (navHidden != oNavHidden) {
2606 const int reqNavHidden =
2607 requested->inputFlags & MASK_NAVHIDDEN;
2608 if (reqNavHidden) {
2609
2610 if (!navHidden) return false;
2611 if (!oNavHidden) return true;
2612 }
2613 }
2614
2615 if ((keyboard != o.keyboard) && requested->keyboard) {
2616 return (keyboard);
2617 }
2618
2619 if ((navigation != o.navigation) && requested->navigation) {
2620 return (navigation);
2621 }
2622 }
2623
2624 if (screenSize || o.screenSize) {
2625 // "Better" is based on the sum of the difference between both
2626 // width and height from the requested dimensions. We are
2627 // assuming the invalid configs (with smaller sizes) have
2628 // already been filtered. Note that if a particular dimension
2629 // is unspecified, we will end up with a large value (the
2630 // difference between 0 and the requested dimension), which is
2631 // good since we will prefer a config that has specified a
2632 // size value.
2633 int myDelta = 0, otherDelta = 0;
2634 if (requested->screenWidth) {
2635 myDelta += requested->screenWidth - screenWidth;
2636 otherDelta += requested->screenWidth - o.screenWidth;
2637 }
2638 if (requested->screenHeight) {
2639 myDelta += requested->screenHeight - screenHeight;
2640 otherDelta += requested->screenHeight - o.screenHeight;
2641 }
2642 if (myDelta != otherDelta) {
2643 return myDelta < otherDelta;
2644 }
2645 }
2646
2647 if (version || o.version) {
2648 if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2649 return (sdkVersion > o.sdkVersion);
2650 }
2651
2652 if ((minorVersion != o.minorVersion) &&
2653 requested->minorVersion) {
2654 return (minorVersion);
2655 }
2656 }
2657
2658 return false;
2659 }
2660 return isMoreSpecificThan(o);
2661 }
2662
match(const ResTable_config & settings) const2663 bool ResTable_config::match(const ResTable_config& settings) const {
2664 if (imsi != 0) {
2665 if (mcc != 0 && mcc != settings.mcc) {
2666 return false;
2667 }
2668 if (mnc != 0 && mnc != settings.mnc) {
2669 return false;
2670 }
2671 }
2672 if (locale != 0) {
2673 // Don't consider country and variants when deciding matches.
2674 // (Theoretically, the variant can also affect the script. For
2675 // example, "ar-alalc97" probably implies the Latin script, but since
2676 // CLDR doesn't support getting likely scripts for that, we'll assume
2677 // the variant doesn't change the script.)
2678 //
2679 // If two configs differ only in their country and variant,
2680 // they can be weeded out in the isMoreSpecificThan test.
2681 if (!langsAreEquivalent(language, settings.language)) {
2682 return false;
2683 }
2684
2685 // For backward compatibility and supporting private-use locales, we
2686 // fall back to old behavior if we couldn't determine the script for
2687 // either of the desired locale or the provided locale. But if we could determine
2688 // the scripts, they should be the same for the locales to match.
2689 bool countriesMustMatch = false;
2690 char computed_script[4];
2691 const char* script;
2692 if (settings.localeScript[0] == '\0') { // could not determine the request's script
2693 countriesMustMatch = true;
2694 } else {
2695 if (localeScript[0] == '\0' && !localeScriptWasComputed) {
2696 // script was not provided or computed, so we try to compute it
2697 localeDataComputeScript(computed_script, language, country);
2698 if (computed_script[0] == '\0') { // we could not compute the script
2699 countriesMustMatch = true;
2700 } else {
2701 script = computed_script;
2702 }
2703 } else { // script was provided, so just use it
2704 script = localeScript;
2705 }
2706 }
2707
2708 if (countriesMustMatch) {
2709 if (country[0] != '\0' && !areIdentical(country, settings.country)) {
2710 return false;
2711 }
2712 } else {
2713 if (memcmp(script, settings.localeScript, sizeof(settings.localeScript)) != 0) {
2714 return false;
2715 }
2716 }
2717 }
2718
2719 if (screenConfig != 0) {
2720 const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2721 const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2722 if (layoutDir != 0 && layoutDir != setLayoutDir) {
2723 return false;
2724 }
2725
2726 const int screenSize = screenLayout&MASK_SCREENSIZE;
2727 const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2728 // Any screen sizes for larger screens than the setting do not
2729 // match.
2730 if (screenSize != 0 && screenSize > setScreenSize) {
2731 return false;
2732 }
2733
2734 const int screenLong = screenLayout&MASK_SCREENLONG;
2735 const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2736 if (screenLong != 0 && screenLong != setScreenLong) {
2737 return false;
2738 }
2739
2740 const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2741 const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2742 if (uiModeType != 0 && uiModeType != setUiModeType) {
2743 return false;
2744 }
2745
2746 const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2747 const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2748 if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2749 return false;
2750 }
2751
2752 if (smallestScreenWidthDp != 0
2753 && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2754 return false;
2755 }
2756 }
2757
2758 if (screenConfig2 != 0) {
2759 const int screenRound = screenLayout2 & MASK_SCREENROUND;
2760 const int setScreenRound = settings.screenLayout2 & MASK_SCREENROUND;
2761 if (screenRound != 0 && screenRound != setScreenRound) {
2762 return false;
2763 }
2764
2765 const int hdr = colorMode & MASK_HDR;
2766 const int setHdr = settings.colorMode & MASK_HDR;
2767 if (hdr != 0 && hdr != setHdr) {
2768 return false;
2769 }
2770
2771 const int wideColorGamut = colorMode & MASK_WIDE_COLOR_GAMUT;
2772 const int setWideColorGamut = settings.colorMode & MASK_WIDE_COLOR_GAMUT;
2773 if (wideColorGamut != 0 && wideColorGamut != setWideColorGamut) {
2774 return false;
2775 }
2776 }
2777
2778 if (screenSizeDp != 0) {
2779 if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2780 if (kDebugTableSuperNoisy) {
2781 ALOGI("Filtering out width %d in requested %d", screenWidthDp,
2782 settings.screenWidthDp);
2783 }
2784 return false;
2785 }
2786 if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2787 if (kDebugTableSuperNoisy) {
2788 ALOGI("Filtering out height %d in requested %d", screenHeightDp,
2789 settings.screenHeightDp);
2790 }
2791 return false;
2792 }
2793 }
2794 if (screenType != 0) {
2795 if (orientation != 0 && orientation != settings.orientation) {
2796 return false;
2797 }
2798 // density always matches - we can scale it. See isBetterThan
2799 if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2800 return false;
2801 }
2802 }
2803 if (input != 0) {
2804 const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2805 const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2806 if (keysHidden != 0 && keysHidden != setKeysHidden) {
2807 // For compatibility, we count a request for KEYSHIDDEN_NO as also
2808 // matching the more recent KEYSHIDDEN_SOFT. Basically
2809 // KEYSHIDDEN_NO means there is some kind of keyboard available.
2810 if (kDebugTableSuperNoisy) {
2811 ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2812 }
2813 if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2814 if (kDebugTableSuperNoisy) {
2815 ALOGI("No match!");
2816 }
2817 return false;
2818 }
2819 }
2820 const int navHidden = inputFlags&MASK_NAVHIDDEN;
2821 const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2822 if (navHidden != 0 && navHidden != setNavHidden) {
2823 return false;
2824 }
2825 if (keyboard != 0 && keyboard != settings.keyboard) {
2826 return false;
2827 }
2828 if (navigation != 0 && navigation != settings.navigation) {
2829 return false;
2830 }
2831 }
2832 if (screenSize != 0) {
2833 if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2834 return false;
2835 }
2836 if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2837 return false;
2838 }
2839 }
2840 if (version != 0) {
2841 if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2842 return false;
2843 }
2844 if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2845 return false;
2846 }
2847 }
2848 return true;
2849 }
2850
appendDirLocale(String8 & out) const2851 void ResTable_config::appendDirLocale(String8& out) const {
2852 if (!language[0]) {
2853 return;
2854 }
2855 const bool scriptWasProvided = localeScript[0] != '\0' && !localeScriptWasComputed;
2856 if (!scriptWasProvided && !localeVariant[0] && !localeNumberingSystem[0]) {
2857 // Legacy format.
2858 if (out.size() > 0) {
2859 out.append("-");
2860 }
2861
2862 char buf[4];
2863 size_t len = unpackLanguage(buf);
2864 out.append(buf, len);
2865
2866 if (country[0]) {
2867 out.append("-r");
2868 len = unpackRegion(buf);
2869 out.append(buf, len);
2870 }
2871 return;
2872 }
2873
2874 // We are writing the modified BCP 47 tag.
2875 // It starts with 'b+' and uses '+' as a separator.
2876
2877 if (out.size() > 0) {
2878 out.append("-");
2879 }
2880 out.append("b+");
2881
2882 char buf[4];
2883 size_t len = unpackLanguage(buf);
2884 out.append(buf, len);
2885
2886 if (scriptWasProvided) {
2887 out.append("+");
2888 out.append(localeScript, sizeof(localeScript));
2889 }
2890
2891 if (country[0]) {
2892 out.append("+");
2893 len = unpackRegion(buf);
2894 out.append(buf, len);
2895 }
2896
2897 if (localeVariant[0]) {
2898 out.append("+");
2899 out.append(localeVariant, strnlen(localeVariant, sizeof(localeVariant)));
2900 }
2901
2902 if (localeNumberingSystem[0]) {
2903 out.append("+u+nu+");
2904 out.append(localeNumberingSystem,
2905 strnlen(localeNumberingSystem, sizeof(localeNumberingSystem)));
2906 }
2907 }
2908
getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN],bool canonicalize) const2909 void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN], bool canonicalize) const {
2910 memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2911
2912 // This represents the "any" locale value, which has traditionally been
2913 // represented by the empty string.
2914 if (language[0] == '\0' && country[0] == '\0') {
2915 return;
2916 }
2917
2918 size_t charsWritten = 0;
2919 if (language[0] != '\0') {
2920 if (canonicalize && areIdentical(language, kTagalog)) {
2921 // Replace Tagalog with Filipino if we are canonicalizing
2922 str[0] = 'f'; str[1] = 'i'; str[2] = 'l'; str[3] = '\0'; // 3-letter code for Filipino
2923 charsWritten += 3;
2924 } else {
2925 charsWritten += unpackLanguage(str);
2926 }
2927 }
2928
2929 if (localeScript[0] != '\0' && !localeScriptWasComputed) {
2930 if (charsWritten > 0) {
2931 str[charsWritten++] = '-';
2932 }
2933 memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2934 charsWritten += sizeof(localeScript);
2935 }
2936
2937 if (country[0] != '\0') {
2938 if (charsWritten > 0) {
2939 str[charsWritten++] = '-';
2940 }
2941 charsWritten += unpackRegion(str + charsWritten);
2942 }
2943
2944 if (localeVariant[0] != '\0') {
2945 if (charsWritten > 0) {
2946 str[charsWritten++] = '-';
2947 }
2948 memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2949 charsWritten += strnlen(str + charsWritten, sizeof(localeVariant));
2950 }
2951
2952 // Add Unicode extension only if at least one other locale component is present
2953 if (localeNumberingSystem[0] != '\0' && charsWritten > 0) {
2954 static constexpr char NU_PREFIX[] = "-u-nu-";
2955 static constexpr size_t NU_PREFIX_LEN = sizeof(NU_PREFIX) - 1;
2956 memcpy(str + charsWritten, NU_PREFIX, NU_PREFIX_LEN);
2957 charsWritten += NU_PREFIX_LEN;
2958 memcpy(str + charsWritten, localeNumberingSystem, sizeof(localeNumberingSystem));
2959 }
2960 }
2961
2962 struct LocaleParserState {
2963 enum State : uint8_t {
2964 BASE, UNICODE_EXTENSION, IGNORE_THE_REST
2965 } parserState;
2966 enum UnicodeState : uint8_t {
2967 /* Initial state after the Unicode singleton is detected. Either a keyword
2968 * or an attribute is expected. */
2969 NO_KEY,
2970 /* Unicode extension key (but not attribute) is expected. Next states:
2971 * NO_KEY, IGNORE_KEY or NUMBERING_SYSTEM. */
2972 EXPECT_KEY,
2973 /* A key is detected, however it is not supported for now. Ignore its
2974 * value. Next states: IGNORE_KEY or NUMBERING_SYSTEM. */
2975 IGNORE_KEY,
2976 /* Numbering system key was detected. Store its value in the configuration
2977 * localeNumberingSystem field. Next state: EXPECT_KEY */
2978 NUMBERING_SYSTEM
2979 } unicodeState;
2980
LocaleParserStateandroid::LocaleParserState2981 LocaleParserState(): parserState(BASE), unicodeState(NO_KEY) {}
2982 };
2983
assignLocaleComponent(ResTable_config * config,const char * start,size_t size,LocaleParserState state)2984 /* static */ inline LocaleParserState assignLocaleComponent(ResTable_config* config,
2985 const char* start, size_t size, LocaleParserState state) {
2986
2987 /* It is assumed that this function is not invoked with state.parserState
2988 * set to IGNORE_THE_REST. The condition is checked by setBcp47Locale
2989 * function. */
2990
2991 if (state.parserState == LocaleParserState::UNICODE_EXTENSION) {
2992 switch (size) {
2993 case 1:
2994 /* Other BCP 47 extensions are not supported at the moment */
2995 state.parserState = LocaleParserState::IGNORE_THE_REST;
2996 break;
2997 case 2:
2998 if (state.unicodeState == LocaleParserState::NO_KEY ||
2999 state.unicodeState == LocaleParserState::EXPECT_KEY) {
3000 /* Analyze Unicode extension key. Currently only 'nu'
3001 * (numbering system) is supported.*/
3002 if ((start[0] == 'n' || start[0] == 'N') &&
3003 (start[1] == 'u' || start[1] == 'U')) {
3004 state.unicodeState = LocaleParserState::NUMBERING_SYSTEM;
3005 } else {
3006 state.unicodeState = LocaleParserState::IGNORE_KEY;
3007 }
3008 } else {
3009 /* Keys are not allowed in other state allowed, ignore the rest. */
3010 state.parserState = LocaleParserState::IGNORE_THE_REST;
3011 }
3012 break;
3013 case 3:
3014 case 4:
3015 case 5:
3016 case 6:
3017 case 7:
3018 case 8:
3019 switch (state.unicodeState) {
3020 case LocaleParserState::NUMBERING_SYSTEM:
3021 /* Accept only the first occurrence of the numbering system. */
3022 if (config->localeNumberingSystem[0] == '\0') {
3023 for (size_t i = 0; i < size; ++i) {
3024 config->localeNumberingSystem[i] = tolower(start[i]);
3025 }
3026 state.unicodeState = LocaleParserState::EXPECT_KEY;
3027 } else {
3028 state.parserState = LocaleParserState::IGNORE_THE_REST;
3029 }
3030 break;
3031 case LocaleParserState::IGNORE_KEY:
3032 /* Unsupported Unicode keyword. Ignore. */
3033 state.unicodeState = LocaleParserState::EXPECT_KEY;
3034 break;
3035 case LocaleParserState::EXPECT_KEY:
3036 /* A keyword followed by an attribute is not allowed. */
3037 state.parserState = LocaleParserState::IGNORE_THE_REST;
3038 break;
3039 case LocaleParserState::NO_KEY:
3040 /* Extension attribute. Do nothing. */
3041 break;
3042 default:
3043 break;
3044 }
3045 break;
3046 default:
3047 /* Unexpected field length - ignore the rest and treat as an error */
3048 state.parserState = LocaleParserState::IGNORE_THE_REST;
3049 }
3050 return state;
3051 }
3052
3053 switch (size) {
3054 case 0:
3055 state.parserState = LocaleParserState::IGNORE_THE_REST;
3056 break;
3057 case 1:
3058 state.parserState = (start[0] == 'u' || start[0] == 'U')
3059 ? LocaleParserState::UNICODE_EXTENSION
3060 : LocaleParserState::IGNORE_THE_REST;
3061 break;
3062 case 2:
3063 case 3:
3064 config->language[0] ? config->packRegion(start) : config->packLanguage(start);
3065 break;
3066 case 4:
3067 if ('0' <= start[0] && start[0] <= '9') {
3068 // this is a variant, so fall through
3069 } else {
3070 config->localeScript[0] = toupper(start[0]);
3071 for (size_t i = 1; i < 4; ++i) {
3072 config->localeScript[i] = tolower(start[i]);
3073 }
3074 break;
3075 }
3076 case 5:
3077 case 6:
3078 case 7:
3079 case 8:
3080 for (size_t i = 0; i < size; ++i) {
3081 config->localeVariant[i] = tolower(start[i]);
3082 }
3083 break;
3084 default:
3085 state.parserState = LocaleParserState::IGNORE_THE_REST;
3086 }
3087
3088 return state;
3089 }
3090
setBcp47Locale(const char * in)3091 void ResTable_config::setBcp47Locale(const char* in) {
3092 clearLocale();
3093
3094 const char* start = in;
3095 LocaleParserState state;
3096 while (const char* separator = strchr(start, '-')) {
3097 const size_t size = separator - start;
3098 state = assignLocaleComponent(this, start, size, state);
3099 if (state.parserState == LocaleParserState::IGNORE_THE_REST) {
3100 fprintf(stderr, "Invalid BCP-47 locale string: %s\n", in);
3101 break;
3102 }
3103 start = (separator + 1);
3104 }
3105
3106 if (state.parserState != LocaleParserState::IGNORE_THE_REST) {
3107 const size_t size = strlen(start);
3108 assignLocaleComponent(this, start, size, state);
3109 }
3110
3111 localeScriptWasComputed = (localeScript[0] == '\0');
3112 if (localeScriptWasComputed) {
3113 computeScript();
3114 }
3115 }
3116
toString() const3117 String8 ResTable_config::toString() const {
3118 String8 res;
3119
3120 if (mcc != 0) {
3121 if (res.size() > 0) res.append("-");
3122 res.appendFormat("mcc%d", dtohs(mcc));
3123 }
3124 if (mnc != 0) {
3125 if (res.size() > 0) res.append("-");
3126 res.appendFormat("mnc%d", dtohs(mnc));
3127 }
3128
3129 appendDirLocale(res);
3130
3131 if ((screenLayout&MASK_LAYOUTDIR) != 0) {
3132 if (res.size() > 0) res.append("-");
3133 switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
3134 case ResTable_config::LAYOUTDIR_LTR:
3135 res.append("ldltr");
3136 break;
3137 case ResTable_config::LAYOUTDIR_RTL:
3138 res.append("ldrtl");
3139 break;
3140 default:
3141 res.appendFormat("layoutDir=%d",
3142 dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
3143 break;
3144 }
3145 }
3146 if (smallestScreenWidthDp != 0) {
3147 if (res.size() > 0) res.append("-");
3148 res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
3149 }
3150 if (screenWidthDp != 0) {
3151 if (res.size() > 0) res.append("-");
3152 res.appendFormat("w%ddp", dtohs(screenWidthDp));
3153 }
3154 if (screenHeightDp != 0) {
3155 if (res.size() > 0) res.append("-");
3156 res.appendFormat("h%ddp", dtohs(screenHeightDp));
3157 }
3158 if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
3159 if (res.size() > 0) res.append("-");
3160 switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
3161 case ResTable_config::SCREENSIZE_SMALL:
3162 res.append("small");
3163 break;
3164 case ResTable_config::SCREENSIZE_NORMAL:
3165 res.append("normal");
3166 break;
3167 case ResTable_config::SCREENSIZE_LARGE:
3168 res.append("large");
3169 break;
3170 case ResTable_config::SCREENSIZE_XLARGE:
3171 res.append("xlarge");
3172 break;
3173 default:
3174 res.appendFormat("screenLayoutSize=%d",
3175 dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
3176 break;
3177 }
3178 }
3179 if ((screenLayout&MASK_SCREENLONG) != 0) {
3180 if (res.size() > 0) res.append("-");
3181 switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
3182 case ResTable_config::SCREENLONG_NO:
3183 res.append("notlong");
3184 break;
3185 case ResTable_config::SCREENLONG_YES:
3186 res.append("long");
3187 break;
3188 default:
3189 res.appendFormat("screenLayoutLong=%d",
3190 dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
3191 break;
3192 }
3193 }
3194 if ((screenLayout2&MASK_SCREENROUND) != 0) {
3195 if (res.size() > 0) res.append("-");
3196 switch (screenLayout2&MASK_SCREENROUND) {
3197 case SCREENROUND_NO:
3198 res.append("notround");
3199 break;
3200 case SCREENROUND_YES:
3201 res.append("round");
3202 break;
3203 default:
3204 res.appendFormat("screenRound=%d", dtohs(screenLayout2&MASK_SCREENROUND));
3205 break;
3206 }
3207 }
3208 if ((colorMode&MASK_HDR) != 0) {
3209 if (res.size() > 0) res.append("-");
3210 switch (colorMode&MASK_HDR) {
3211 case ResTable_config::HDR_NO:
3212 res.append("lowdr");
3213 break;
3214 case ResTable_config::HDR_YES:
3215 res.append("highdr");
3216 break;
3217 default:
3218 res.appendFormat("hdr=%d", dtohs(colorMode&MASK_HDR));
3219 break;
3220 }
3221 }
3222 if ((colorMode&MASK_WIDE_COLOR_GAMUT) != 0) {
3223 if (res.size() > 0) res.append("-");
3224 switch (colorMode&MASK_WIDE_COLOR_GAMUT) {
3225 case ResTable_config::WIDE_COLOR_GAMUT_NO:
3226 res.append("nowidecg");
3227 break;
3228 case ResTable_config::WIDE_COLOR_GAMUT_YES:
3229 res.append("widecg");
3230 break;
3231 default:
3232 res.appendFormat("wideColorGamut=%d", dtohs(colorMode&MASK_WIDE_COLOR_GAMUT));
3233 break;
3234 }
3235 }
3236 if (orientation != ORIENTATION_ANY) {
3237 if (res.size() > 0) res.append("-");
3238 switch (orientation) {
3239 case ResTable_config::ORIENTATION_PORT:
3240 res.append("port");
3241 break;
3242 case ResTable_config::ORIENTATION_LAND:
3243 res.append("land");
3244 break;
3245 case ResTable_config::ORIENTATION_SQUARE:
3246 res.append("square");
3247 break;
3248 default:
3249 res.appendFormat("orientation=%d", dtohs(orientation));
3250 break;
3251 }
3252 }
3253 if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
3254 if (res.size() > 0) res.append("-");
3255 switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
3256 case ResTable_config::UI_MODE_TYPE_DESK:
3257 res.append("desk");
3258 break;
3259 case ResTable_config::UI_MODE_TYPE_CAR:
3260 res.append("car");
3261 break;
3262 case ResTable_config::UI_MODE_TYPE_TELEVISION:
3263 res.append("television");
3264 break;
3265 case ResTable_config::UI_MODE_TYPE_APPLIANCE:
3266 res.append("appliance");
3267 break;
3268 case ResTable_config::UI_MODE_TYPE_WATCH:
3269 res.append("watch");
3270 break;
3271 case ResTable_config::UI_MODE_TYPE_VR_HEADSET:
3272 res.append("vrheadset");
3273 break;
3274 default:
3275 res.appendFormat("uiModeType=%d",
3276 dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
3277 break;
3278 }
3279 }
3280 if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
3281 if (res.size() > 0) res.append("-");
3282 switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
3283 case ResTable_config::UI_MODE_NIGHT_NO:
3284 res.append("notnight");
3285 break;
3286 case ResTable_config::UI_MODE_NIGHT_YES:
3287 res.append("night");
3288 break;
3289 default:
3290 res.appendFormat("uiModeNight=%d",
3291 dtohs(uiMode&MASK_UI_MODE_NIGHT));
3292 break;
3293 }
3294 }
3295 if (density != DENSITY_DEFAULT) {
3296 if (res.size() > 0) res.append("-");
3297 switch (density) {
3298 case ResTable_config::DENSITY_LOW:
3299 res.append("ldpi");
3300 break;
3301 case ResTable_config::DENSITY_MEDIUM:
3302 res.append("mdpi");
3303 break;
3304 case ResTable_config::DENSITY_TV:
3305 res.append("tvdpi");
3306 break;
3307 case ResTable_config::DENSITY_HIGH:
3308 res.append("hdpi");
3309 break;
3310 case ResTable_config::DENSITY_XHIGH:
3311 res.append("xhdpi");
3312 break;
3313 case ResTable_config::DENSITY_XXHIGH:
3314 res.append("xxhdpi");
3315 break;
3316 case ResTable_config::DENSITY_XXXHIGH:
3317 res.append("xxxhdpi");
3318 break;
3319 case ResTable_config::DENSITY_NONE:
3320 res.append("nodpi");
3321 break;
3322 case ResTable_config::DENSITY_ANY:
3323 res.append("anydpi");
3324 break;
3325 default:
3326 res.appendFormat("%ddpi", dtohs(density));
3327 break;
3328 }
3329 }
3330 if (touchscreen != TOUCHSCREEN_ANY) {
3331 if (res.size() > 0) res.append("-");
3332 switch (touchscreen) {
3333 case ResTable_config::TOUCHSCREEN_NOTOUCH:
3334 res.append("notouch");
3335 break;
3336 case ResTable_config::TOUCHSCREEN_FINGER:
3337 res.append("finger");
3338 break;
3339 case ResTable_config::TOUCHSCREEN_STYLUS:
3340 res.append("stylus");
3341 break;
3342 default:
3343 res.appendFormat("touchscreen=%d", dtohs(touchscreen));
3344 break;
3345 }
3346 }
3347 if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
3348 if (res.size() > 0) res.append("-");
3349 switch (inputFlags&MASK_KEYSHIDDEN) {
3350 case ResTable_config::KEYSHIDDEN_NO:
3351 res.append("keysexposed");
3352 break;
3353 case ResTable_config::KEYSHIDDEN_YES:
3354 res.append("keyshidden");
3355 break;
3356 case ResTable_config::KEYSHIDDEN_SOFT:
3357 res.append("keyssoft");
3358 break;
3359 }
3360 }
3361 if (keyboard != KEYBOARD_ANY) {
3362 if (res.size() > 0) res.append("-");
3363 switch (keyboard) {
3364 case ResTable_config::KEYBOARD_NOKEYS:
3365 res.append("nokeys");
3366 break;
3367 case ResTable_config::KEYBOARD_QWERTY:
3368 res.append("qwerty");
3369 break;
3370 case ResTable_config::KEYBOARD_12KEY:
3371 res.append("12key");
3372 break;
3373 default:
3374 res.appendFormat("keyboard=%d", dtohs(keyboard));
3375 break;
3376 }
3377 }
3378 if ((inputFlags&MASK_NAVHIDDEN) != 0) {
3379 if (res.size() > 0) res.append("-");
3380 switch (inputFlags&MASK_NAVHIDDEN) {
3381 case ResTable_config::NAVHIDDEN_NO:
3382 res.append("navexposed");
3383 break;
3384 case ResTable_config::NAVHIDDEN_YES:
3385 res.append("navhidden");
3386 break;
3387 default:
3388 res.appendFormat("inputFlagsNavHidden=%d",
3389 dtohs(inputFlags&MASK_NAVHIDDEN));
3390 break;
3391 }
3392 }
3393 if (navigation != NAVIGATION_ANY) {
3394 if (res.size() > 0) res.append("-");
3395 switch (navigation) {
3396 case ResTable_config::NAVIGATION_NONAV:
3397 res.append("nonav");
3398 break;
3399 case ResTable_config::NAVIGATION_DPAD:
3400 res.append("dpad");
3401 break;
3402 case ResTable_config::NAVIGATION_TRACKBALL:
3403 res.append("trackball");
3404 break;
3405 case ResTable_config::NAVIGATION_WHEEL:
3406 res.append("wheel");
3407 break;
3408 default:
3409 res.appendFormat("navigation=%d", dtohs(navigation));
3410 break;
3411 }
3412 }
3413 if (screenSize != 0) {
3414 if (res.size() > 0) res.append("-");
3415 res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
3416 }
3417 if (version != 0) {
3418 if (res.size() > 0) res.append("-");
3419 res.appendFormat("v%d", dtohs(sdkVersion));
3420 if (minorVersion != 0) {
3421 res.appendFormat(".%d", dtohs(minorVersion));
3422 }
3423 }
3424
3425 return res;
3426 }
3427
3428 // --------------------------------------------------------------------
3429 // --------------------------------------------------------------------
3430 // --------------------------------------------------------------------
3431
3432 struct ResTable::Header
3433 {
Headerandroid::ResTable::Header3434 explicit Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
3435 resourceIDMap(NULL), resourceIDMapSize(0) { }
3436
~Headerandroid::ResTable::Header3437 ~Header()
3438 {
3439 free(resourceIDMap);
3440 }
3441
3442 const ResTable* const owner;
3443 void* ownedData;
3444 const ResTable_header* header;
3445 size_t size;
3446 const uint8_t* dataEnd;
3447 size_t index;
3448 int32_t cookie;
3449
3450 ResStringPool values;
3451 uint32_t* resourceIDMap;
3452 size_t resourceIDMapSize;
3453 };
3454
3455 struct ResTable::Entry {
3456 ResTable_config config;
3457 const ResTable_entry* entry;
3458 const ResTable_type* type;
3459 uint32_t specFlags;
3460 const Package* package;
3461
3462 StringPoolRef typeStr;
3463 StringPoolRef keyStr;
3464 };
3465
3466 struct ResTable::Type
3467 {
Typeandroid::ResTable::Type3468 Type(const Header* _header, const Package* _package, size_t count)
3469 : header(_header), package(_package), entryCount(count),
3470 typeSpec(NULL), typeSpecFlags(NULL) { }
3471 const Header* const header;
3472 const Package* const package;
3473 const size_t entryCount;
3474 const ResTable_typeSpec* typeSpec;
3475 const uint32_t* typeSpecFlags;
3476 IdmapEntries idmapEntries;
3477 Vector<const ResTable_type*> configs;
3478 };
3479
3480 struct ResTable::Package
3481 {
Packageandroid::ResTable::Package3482 Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
3483 : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
3484 if (dtohs(package->header.headerSize) == sizeof(*package)) {
3485 // The package structure is the same size as the definition.
3486 // This means it contains the typeIdOffset field.
3487 typeIdOffset = package->typeIdOffset;
3488 }
3489 }
3490
3491 const ResTable* const owner;
3492 const Header* const header;
3493 const ResTable_package* const package;
3494
3495 ResStringPool typeStrings;
3496 ResStringPool keyStrings;
3497
3498 size_t typeIdOffset;
3499 };
3500
3501 // A group of objects describing a particular resource package.
3502 // The first in 'package' is always the root object (from the resource
3503 // table that defined the package); the ones after are skins on top of it.
3504 struct ResTable::PackageGroup
3505 {
PackageGroupandroid::ResTable::PackageGroup3506 PackageGroup(
3507 ResTable* _owner, const String16& _name, uint32_t _id,
3508 bool appAsLib, bool _isSystemAsset, bool _isDynamic)
3509 : owner(_owner)
3510 , name(_name)
3511 , id(_id)
3512 , largestTypeId(0)
3513 , dynamicRefTable(static_cast<uint8_t>(_id), appAsLib)
3514 , isSystemAsset(_isSystemAsset)
3515 , isDynamic(_isDynamic)
3516 { }
3517
~PackageGroupandroid::ResTable::PackageGroup3518 ~PackageGroup() {
3519 clearBagCache();
3520 const size_t numTypes = types.size();
3521 for (size_t i = 0; i < numTypes; i++) {
3522 TypeList& typeList = types.editItemAt(i);
3523 const size_t numInnerTypes = typeList.size();
3524 for (size_t j = 0; j < numInnerTypes; j++) {
3525 if (typeList[j]->package->owner == owner) {
3526 delete typeList[j];
3527 }
3528 }
3529 typeList.clear();
3530 }
3531
3532 const size_t N = packages.size();
3533 for (size_t i=0; i<N; i++) {
3534 Package* pkg = packages[i];
3535 if (pkg->owner == owner) {
3536 delete pkg;
3537 }
3538 }
3539 }
3540
3541 /**
3542 * Clear all cache related data that depends on parameters/configuration.
3543 * This includes the bag caches and filtered types.
3544 */
clearBagCacheandroid::ResTable::PackageGroup3545 void clearBagCache() {
3546 for (size_t i = 0; i < typeCacheEntries.size(); i++) {
3547 if (kDebugTableNoisy) {
3548 printf("type=%zu\n", i);
3549 }
3550 const TypeList& typeList = types[i];
3551 if (!typeList.isEmpty()) {
3552 TypeCacheEntry& cacheEntry = typeCacheEntries.editItemAt(i);
3553
3554 // Reset the filtered configurations.
3555 cacheEntry.filteredConfigs.clear();
3556
3557 bag_set** typeBags = cacheEntry.cachedBags;
3558 if (kDebugTableNoisy) {
3559 printf("typeBags=%p\n", typeBags);
3560 }
3561
3562 if (typeBags) {
3563 const size_t N = typeList[0]->entryCount;
3564 if (kDebugTableNoisy) {
3565 printf("type->entryCount=%zu\n", N);
3566 }
3567 for (size_t j = 0; j < N; j++) {
3568 if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF) {
3569 free(typeBags[j]);
3570 }
3571 }
3572 free(typeBags);
3573 cacheEntry.cachedBags = NULL;
3574 }
3575 }
3576 }
3577 }
3578
findType16android::ResTable::PackageGroup3579 ssize_t findType16(const char16_t* type, size_t len) const {
3580 const size_t N = packages.size();
3581 for (size_t i = 0; i < N; i++) {
3582 ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
3583 if (index >= 0) {
3584 return index + packages[i]->typeIdOffset;
3585 }
3586 }
3587 return -1;
3588 }
3589
3590 const ResTable* const owner;
3591 String16 const name;
3592 uint32_t const id;
3593
3594 // This is mainly used to keep track of the loaded packages
3595 // and to clean them up properly. Accessing resources happens from
3596 // the 'types' array.
3597 Vector<Package*> packages;
3598
3599 ByteBucketArray<TypeList> types;
3600
3601 uint8_t largestTypeId;
3602
3603 // Cached objects dependent on the parameters/configuration of this ResTable.
3604 // Gets cleared whenever the parameters/configuration changes.
3605 // These are stored here in a parallel structure because the data in `types` may
3606 // be shared by other ResTable's (framework resources are shared this way).
3607 ByteBucketArray<TypeCacheEntry> typeCacheEntries;
3608
3609 // The table mapping dynamic references to resolved references for
3610 // this package group.
3611 // TODO: We may be able to support dynamic references in overlays
3612 // by having these tables in a per-package scope rather than
3613 // per-package-group.
3614 DynamicRefTable dynamicRefTable;
3615
3616 // If the package group comes from a system asset. Used in
3617 // determining non-system locales.
3618 const bool isSystemAsset;
3619 const bool isDynamic;
3620 };
3621
Theme(const ResTable & table)3622 ResTable::Theme::Theme(const ResTable& table)
3623 : mTable(table)
3624 , mTypeSpecFlags(0)
3625 {
3626 memset(mPackages, 0, sizeof(mPackages));
3627 }
3628
~Theme()3629 ResTable::Theme::~Theme()
3630 {
3631 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3632 package_info* pi = mPackages[i];
3633 if (pi != NULL) {
3634 free_package(pi);
3635 }
3636 }
3637 }
3638
free_package(package_info * pi)3639 void ResTable::Theme::free_package(package_info* pi)
3640 {
3641 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3642 theme_entry* te = pi->types[j].entries;
3643 if (te != NULL) {
3644 free(te);
3645 }
3646 }
3647 free(pi);
3648 }
3649
copy_package(package_info * pi)3650 ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3651 {
3652 package_info* newpi = (package_info*)malloc(sizeof(package_info));
3653 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3654 size_t cnt = pi->types[j].numEntries;
3655 newpi->types[j].numEntries = cnt;
3656 theme_entry* te = pi->types[j].entries;
3657 size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3658 if (te != NULL && (cnt < 0xFFFFFFFF-1) && (cnt < cnt_max)) {
3659 theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3660 newpi->types[j].entries = newte;
3661 memcpy(newte, te, cnt*sizeof(theme_entry));
3662 } else {
3663 newpi->types[j].entries = NULL;
3664 }
3665 }
3666 return newpi;
3667 }
3668
applyStyle(uint32_t resID,bool force)3669 status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3670 {
3671 const bag_entry* bag;
3672 uint32_t bagTypeSpecFlags = 0;
3673 mTable.lock();
3674 const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3675 if (kDebugTableNoisy) {
3676 ALOGV("Applying style 0x%08x to theme %p, count=%zu", resID, this, N);
3677 }
3678 if (N < 0) {
3679 mTable.unlock();
3680 return N;
3681 }
3682
3683 mTypeSpecFlags |= bagTypeSpecFlags;
3684
3685 uint32_t curPackage = 0xffffffff;
3686 ssize_t curPackageIndex = 0;
3687 package_info* curPI = NULL;
3688 uint32_t curType = 0xffffffff;
3689 size_t numEntries = 0;
3690 theme_entry* curEntries = NULL;
3691
3692 const bag_entry* end = bag + N;
3693 while (bag < end) {
3694 const uint32_t attrRes = bag->map.name.ident;
3695 const uint32_t p = Res_GETPACKAGE(attrRes);
3696 const uint32_t t = Res_GETTYPE(attrRes);
3697 const uint32_t e = Res_GETENTRY(attrRes);
3698
3699 if (curPackage != p) {
3700 const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3701 if (pidx < 0) {
3702 ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3703 bag++;
3704 continue;
3705 }
3706 curPackage = p;
3707 curPackageIndex = pidx;
3708 curPI = mPackages[pidx];
3709 if (curPI == NULL) {
3710 curPI = (package_info*)malloc(sizeof(package_info));
3711 memset(curPI, 0, sizeof(*curPI));
3712 mPackages[pidx] = curPI;
3713 }
3714 curType = 0xffffffff;
3715 }
3716 if (curType != t) {
3717 if (t > Res_MAXTYPE) {
3718 ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3719 bag++;
3720 continue;
3721 }
3722 curType = t;
3723 curEntries = curPI->types[t].entries;
3724 if (curEntries == NULL) {
3725 PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3726 const TypeList& typeList = grp->types[t];
3727 size_t cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3728 size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3729 size_t buff_size = (cnt < cnt_max && cnt < 0xFFFFFFFF-1) ?
3730 cnt*sizeof(theme_entry) : 0;
3731 curEntries = (theme_entry*)malloc(buff_size);
3732 memset(curEntries, Res_value::TYPE_NULL, buff_size);
3733 curPI->types[t].numEntries = cnt;
3734 curPI->types[t].entries = curEntries;
3735 }
3736 numEntries = curPI->types[t].numEntries;
3737 }
3738 if (e >= numEntries) {
3739 ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3740 bag++;
3741 continue;
3742 }
3743 theme_entry* curEntry = curEntries + e;
3744 if (kDebugTableNoisy) {
3745 ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3746 attrRes, bag->map.value.dataType, bag->map.value.data,
3747 curEntry->value.dataType);
3748 }
3749 if (force || (curEntry->value.dataType == Res_value::TYPE_NULL
3750 && curEntry->value.data != Res_value::DATA_NULL_EMPTY)) {
3751 curEntry->stringBlock = bag->stringBlock;
3752 curEntry->typeSpecFlags |= bagTypeSpecFlags;
3753 curEntry->value = bag->map.value;
3754 }
3755
3756 bag++;
3757 }
3758
3759 mTable.unlock();
3760
3761 if (kDebugTableTheme) {
3762 ALOGI("Applying style 0x%08x (force=%d) theme %p...\n", resID, force, this);
3763 dumpToLog();
3764 }
3765
3766 return NO_ERROR;
3767 }
3768
setTo(const Theme & other)3769 status_t ResTable::Theme::setTo(const Theme& other)
3770 {
3771 if (kDebugTableTheme) {
3772 ALOGI("Setting theme %p from theme %p...\n", this, &other);
3773 dumpToLog();
3774 other.dumpToLog();
3775 }
3776
3777 if (&mTable == &other.mTable) {
3778 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3779 if (mPackages[i] != NULL) {
3780 free_package(mPackages[i]);
3781 }
3782 if (other.mPackages[i] != NULL) {
3783 mPackages[i] = copy_package(other.mPackages[i]);
3784 } else {
3785 mPackages[i] = NULL;
3786 }
3787 }
3788 } else {
3789 // @todo: need to really implement this, not just copy
3790 // the system package (which is still wrong because it isn't
3791 // fixing up resource references).
3792 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3793 if (mPackages[i] != NULL) {
3794 free_package(mPackages[i]);
3795 }
3796 if (i == 0 && other.mPackages[i] != NULL) {
3797 mPackages[i] = copy_package(other.mPackages[i]);
3798 } else {
3799 mPackages[i] = NULL;
3800 }
3801 }
3802 }
3803
3804 mTypeSpecFlags = other.mTypeSpecFlags;
3805
3806 if (kDebugTableTheme) {
3807 ALOGI("Final theme:");
3808 dumpToLog();
3809 }
3810
3811 return NO_ERROR;
3812 }
3813
clear()3814 status_t ResTable::Theme::clear()
3815 {
3816 if (kDebugTableTheme) {
3817 ALOGI("Clearing theme %p...\n", this);
3818 dumpToLog();
3819 }
3820
3821 for (size_t i = 0; i < Res_MAXPACKAGE; i++) {
3822 if (mPackages[i] != NULL) {
3823 free_package(mPackages[i]);
3824 mPackages[i] = NULL;
3825 }
3826 }
3827
3828 mTypeSpecFlags = 0;
3829
3830 if (kDebugTableTheme) {
3831 ALOGI("Final theme:");
3832 dumpToLog();
3833 }
3834
3835 return NO_ERROR;
3836 }
3837
getAttribute(uint32_t resID,Res_value * outValue,uint32_t * outTypeSpecFlags) const3838 ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3839 uint32_t* outTypeSpecFlags) const
3840 {
3841 int cnt = 20;
3842
3843 if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3844
3845 do {
3846 const ssize_t p = mTable.getResourcePackageIndex(resID);
3847 const uint32_t t = Res_GETTYPE(resID);
3848 const uint32_t e = Res_GETENTRY(resID);
3849
3850 if (kDebugTableTheme) {
3851 ALOGI("Looking up attr 0x%08x in theme %p", resID, this);
3852 }
3853
3854 if (p >= 0) {
3855 const package_info* const pi = mPackages[p];
3856 if (kDebugTableTheme) {
3857 ALOGI("Found package: %p", pi);
3858 }
3859 if (pi != NULL) {
3860 if (kDebugTableTheme) {
3861 ALOGI("Desired type index is %u in avail %zu", t, Res_MAXTYPE + 1);
3862 }
3863 if (t <= Res_MAXTYPE) {
3864 const type_info& ti = pi->types[t];
3865 if (kDebugTableTheme) {
3866 ALOGI("Desired entry index is %u in avail %zu", e, ti.numEntries);
3867 }
3868 if (e < ti.numEntries) {
3869 const theme_entry& te = ti.entries[e];
3870 if (outTypeSpecFlags != NULL) {
3871 *outTypeSpecFlags |= te.typeSpecFlags;
3872 }
3873 if (kDebugTableTheme) {
3874 ALOGI("Theme value: type=0x%x, data=0x%08x",
3875 te.value.dataType, te.value.data);
3876 }
3877 const uint8_t type = te.value.dataType;
3878 if (type == Res_value::TYPE_ATTRIBUTE) {
3879 if (cnt > 0) {
3880 cnt--;
3881 resID = te.value.data;
3882 continue;
3883 }
3884 ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3885 return BAD_INDEX;
3886 } else if (type != Res_value::TYPE_NULL
3887 || te.value.data == Res_value::DATA_NULL_EMPTY) {
3888 *outValue = te.value;
3889 return te.stringBlock;
3890 }
3891 return BAD_INDEX;
3892 }
3893 }
3894 }
3895 }
3896 break;
3897
3898 } while (true);
3899
3900 return BAD_INDEX;
3901 }
3902
resolveAttributeReference(Res_value * inOutValue,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * inoutConfig) const3903 ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3904 ssize_t blockIndex, uint32_t* outLastRef,
3905 uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3906 {
3907 //printf("Resolving type=0x%x\n", inOutValue->dataType);
3908 if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3909 uint32_t newTypeSpecFlags;
3910 blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3911 if (kDebugTableTheme) {
3912 ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=0x%x\n",
3913 (int)blockIndex, (int)inOutValue->dataType, inOutValue->data);
3914 }
3915 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3916 //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3917 if (blockIndex < 0) {
3918 return blockIndex;
3919 }
3920 }
3921 return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3922 inoutTypeSpecFlags, inoutConfig);
3923 }
3924
getChangingConfigurations() const3925 uint32_t ResTable::Theme::getChangingConfigurations() const
3926 {
3927 return mTypeSpecFlags;
3928 }
3929
dumpToLog() const3930 void ResTable::Theme::dumpToLog() const
3931 {
3932 ALOGI("Theme %p:\n", this);
3933 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3934 package_info* pi = mPackages[i];
3935 if (pi == NULL) continue;
3936
3937 ALOGI(" Package #0x%02x:\n", (int)(i + 1));
3938 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3939 type_info& ti = pi->types[j];
3940 if (ti.numEntries == 0) continue;
3941 ALOGI(" Type #0x%02x:\n", (int)(j + 1));
3942 for (size_t k = 0; k < ti.numEntries; k++) {
3943 const theme_entry& te = ti.entries[k];
3944 if (te.value.dataType == Res_value::TYPE_NULL) continue;
3945 ALOGI(" 0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3946 (int)Res_MAKEID(i, j, k),
3947 te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3948 }
3949 }
3950 }
3951 }
3952
ResTable()3953 ResTable::ResTable()
3954 : mError(NO_INIT), mNextPackageId(2)
3955 {
3956 memset(&mParams, 0, sizeof(mParams));
3957 memset(mPackageMap, 0, sizeof(mPackageMap));
3958 if (kDebugTableSuperNoisy) {
3959 ALOGI("Creating ResTable %p\n", this);
3960 }
3961 }
3962
ResTable(const void * data,size_t size,const int32_t cookie,bool copyData)3963 ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3964 : mError(NO_INIT), mNextPackageId(2)
3965 {
3966 memset(&mParams, 0, sizeof(mParams));
3967 memset(mPackageMap, 0, sizeof(mPackageMap));
3968 addInternal(data, size, NULL, 0, false, cookie, copyData);
3969 LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3970 if (kDebugTableSuperNoisy) {
3971 ALOGI("Creating ResTable %p\n", this);
3972 }
3973 }
3974
~ResTable()3975 ResTable::~ResTable()
3976 {
3977 if (kDebugTableSuperNoisy) {
3978 ALOGI("Destroying ResTable in %p\n", this);
3979 }
3980 uninit();
3981 }
3982
getResourcePackageIndex(uint32_t resID) const3983 inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3984 {
3985 return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3986 }
3987
getResourcePackageIndexFromPackage(uint8_t packageID) const3988 inline ssize_t ResTable::getResourcePackageIndexFromPackage(uint8_t packageID) const
3989 {
3990 return ((ssize_t)mPackageMap[packageID])-1;
3991 }
3992
add(const void * data,size_t size,const int32_t cookie,bool copyData)3993 status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3994 return addInternal(data, size, NULL, 0, false, cookie, copyData);
3995 }
3996
add(const void * data,size_t size,const void * idmapData,size_t idmapDataSize,const int32_t cookie,bool copyData,bool appAsLib)3997 status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3998 const int32_t cookie, bool copyData, bool appAsLib) {
3999 return addInternal(data, size, idmapData, idmapDataSize, appAsLib, cookie, copyData);
4000 }
4001
add(Asset * asset,const int32_t cookie,bool copyData)4002 status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
4003 const void* data = asset->getBuffer(true);
4004 if (data == NULL) {
4005 ALOGW("Unable to get buffer of resource asset file");
4006 return UNKNOWN_ERROR;
4007 }
4008
4009 return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, false, 0, cookie,
4010 copyData);
4011 }
4012
add(Asset * asset,Asset * idmapAsset,const int32_t cookie,bool copyData,bool appAsLib,bool isSystemAsset)4013 status_t ResTable::add(
4014 Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData,
4015 bool appAsLib, bool isSystemAsset) {
4016 const void* data = asset->getBuffer(true);
4017 if (data == NULL) {
4018 ALOGW("Unable to get buffer of resource asset file");
4019 return UNKNOWN_ERROR;
4020 }
4021
4022 size_t idmapSize = 0;
4023 const void* idmapData = NULL;
4024 if (idmapAsset != NULL) {
4025 idmapData = idmapAsset->getBuffer(true);
4026 if (idmapData == NULL) {
4027 ALOGW("Unable to get buffer of idmap asset file");
4028 return UNKNOWN_ERROR;
4029 }
4030 idmapSize = static_cast<size_t>(idmapAsset->getLength());
4031 }
4032
4033 return addInternal(data, static_cast<size_t>(asset->getLength()),
4034 idmapData, idmapSize, appAsLib, cookie, copyData, isSystemAsset);
4035 }
4036
add(ResTable * src,bool isSystemAsset)4037 status_t ResTable::add(ResTable* src, bool isSystemAsset)
4038 {
4039 mError = src->mError;
4040
4041 for (size_t i=0; i < src->mHeaders.size(); i++) {
4042 mHeaders.add(src->mHeaders[i]);
4043 }
4044
4045 for (size_t i=0; i < src->mPackageGroups.size(); i++) {
4046 PackageGroup* srcPg = src->mPackageGroups[i];
4047 PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id,
4048 false /* appAsLib */, isSystemAsset || srcPg->isSystemAsset, srcPg->isDynamic);
4049 for (size_t j=0; j<srcPg->packages.size(); j++) {
4050 pg->packages.add(srcPg->packages[j]);
4051 }
4052
4053 for (size_t j = 0; j < srcPg->types.size(); j++) {
4054 if (srcPg->types[j].isEmpty()) {
4055 continue;
4056 }
4057
4058 TypeList& typeList = pg->types.editItemAt(j);
4059 typeList.appendVector(srcPg->types[j]);
4060 }
4061 pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
4062 pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
4063 mPackageGroups.add(pg);
4064 }
4065
4066 memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
4067
4068 return mError;
4069 }
4070
addEmpty(const int32_t cookie)4071 status_t ResTable::addEmpty(const int32_t cookie) {
4072 Header* header = new Header(this);
4073 header->index = mHeaders.size();
4074 header->cookie = cookie;
4075 header->values.setToEmpty();
4076 header->ownedData = calloc(1, sizeof(ResTable_header));
4077
4078 ResTable_header* resHeader = (ResTable_header*) header->ownedData;
4079 resHeader->header.type = RES_TABLE_TYPE;
4080 resHeader->header.headerSize = sizeof(ResTable_header);
4081 resHeader->header.size = sizeof(ResTable_header);
4082
4083 header->header = (const ResTable_header*) resHeader;
4084 mHeaders.add(header);
4085 return (mError=NO_ERROR);
4086 }
4087
addInternal(const void * data,size_t dataSize,const void * idmapData,size_t idmapDataSize,bool appAsLib,const int32_t cookie,bool copyData,bool isSystemAsset)4088 status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
4089 bool appAsLib, const int32_t cookie, bool copyData, bool isSystemAsset)
4090 {
4091 if (!data) {
4092 return NO_ERROR;
4093 }
4094
4095 if (dataSize < sizeof(ResTable_header)) {
4096 ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
4097 (int) dataSize, (int) sizeof(ResTable_header));
4098 return UNKNOWN_ERROR;
4099 }
4100
4101 Header* header = new Header(this);
4102 header->index = mHeaders.size();
4103 header->cookie = cookie;
4104 if (idmapData != NULL) {
4105 header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
4106 if (header->resourceIDMap == NULL) {
4107 delete header;
4108 return (mError = NO_MEMORY);
4109 }
4110 memcpy(header->resourceIDMap, idmapData, idmapDataSize);
4111 header->resourceIDMapSize = idmapDataSize;
4112 }
4113 mHeaders.add(header);
4114
4115 const bool notDeviceEndian = htods(0xf0) != 0xf0;
4116
4117 if (kDebugLoadTableNoisy) {
4118 ALOGV("Adding resources to ResTable: data=%p, size=%zu, cookie=%d, copy=%d "
4119 "idmap=%p\n", data, dataSize, cookie, copyData, idmapData);
4120 }
4121
4122 if (copyData || notDeviceEndian) {
4123 header->ownedData = malloc(dataSize);
4124 if (header->ownedData == NULL) {
4125 return (mError=NO_MEMORY);
4126 }
4127 memcpy(header->ownedData, data, dataSize);
4128 data = header->ownedData;
4129 }
4130
4131 header->header = (const ResTable_header*)data;
4132 header->size = dtohl(header->header->header.size);
4133 if (kDebugLoadTableSuperNoisy) {
4134 ALOGI("Got size %zu, again size 0x%x, raw size 0x%x\n", header->size,
4135 dtohl(header->header->header.size), header->header->header.size);
4136 }
4137 if (kDebugLoadTableNoisy) {
4138 ALOGV("Loading ResTable @%p:\n", header->header);
4139 }
4140 if (dtohs(header->header->header.headerSize) > header->size
4141 || header->size > dataSize) {
4142 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
4143 (int)dtohs(header->header->header.headerSize),
4144 (int)header->size, (int)dataSize);
4145 return (mError=BAD_TYPE);
4146 }
4147 if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
4148 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
4149 (int)dtohs(header->header->header.headerSize),
4150 (int)header->size);
4151 return (mError=BAD_TYPE);
4152 }
4153 header->dataEnd = ((const uint8_t*)header->header) + header->size;
4154
4155 // Iterate through all chunks.
4156 size_t curPackage = 0;
4157
4158 const ResChunk_header* chunk =
4159 (const ResChunk_header*)(((const uint8_t*)header->header)
4160 + dtohs(header->header->header.headerSize));
4161 while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
4162 ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
4163 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
4164 if (err != NO_ERROR) {
4165 return (mError=err);
4166 }
4167 if (kDebugTableNoisy) {
4168 ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
4169 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
4170 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
4171 }
4172 const size_t csize = dtohl(chunk->size);
4173 const uint16_t ctype = dtohs(chunk->type);
4174 if (ctype == RES_STRING_POOL_TYPE) {
4175 if (header->values.getError() != NO_ERROR) {
4176 // Only use the first string chunk; ignore any others that
4177 // may appear.
4178 status_t err = header->values.setTo(chunk, csize);
4179 if (err != NO_ERROR) {
4180 return (mError=err);
4181 }
4182 } else {
4183 ALOGW("Multiple string chunks found in resource table.");
4184 }
4185 } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
4186 if (curPackage >= dtohl(header->header->packageCount)) {
4187 ALOGW("More package chunks were found than the %d declared in the header.",
4188 dtohl(header->header->packageCount));
4189 return (mError=BAD_TYPE);
4190 }
4191
4192 if (parsePackage(
4193 (ResTable_package*)chunk, header, appAsLib, isSystemAsset) != NO_ERROR) {
4194 return mError;
4195 }
4196 curPackage++;
4197 } else {
4198 ALOGW("Unknown chunk type 0x%x in table at %p.\n",
4199 ctype,
4200 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
4201 }
4202 chunk = (const ResChunk_header*)
4203 (((const uint8_t*)chunk) + csize);
4204 }
4205
4206 if (curPackage < dtohl(header->header->packageCount)) {
4207 ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
4208 (int)curPackage, dtohl(header->header->packageCount));
4209 return (mError=BAD_TYPE);
4210 }
4211 mError = header->values.getError();
4212 if (mError != NO_ERROR) {
4213 ALOGW("No string values found in resource table!");
4214 }
4215
4216 if (kDebugTableNoisy) {
4217 ALOGV("Returning from add with mError=%d\n", mError);
4218 }
4219 return mError;
4220 }
4221
getError() const4222 status_t ResTable::getError() const
4223 {
4224 return mError;
4225 }
4226
uninit()4227 void ResTable::uninit()
4228 {
4229 mError = NO_INIT;
4230 size_t N = mPackageGroups.size();
4231 for (size_t i=0; i<N; i++) {
4232 PackageGroup* g = mPackageGroups[i];
4233 delete g;
4234 }
4235 N = mHeaders.size();
4236 for (size_t i=0; i<N; i++) {
4237 Header* header = mHeaders[i];
4238 if (header->owner == this) {
4239 if (header->ownedData) {
4240 free(header->ownedData);
4241 }
4242 delete header;
4243 }
4244 }
4245
4246 mPackageGroups.clear();
4247 mHeaders.clear();
4248 }
4249
getResourceName(uint32_t resID,bool allowUtf8,resource_name * outName) const4250 bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
4251 {
4252 if (mError != NO_ERROR) {
4253 return false;
4254 }
4255
4256 const ssize_t p = getResourcePackageIndex(resID);
4257 const int t = Res_GETTYPE(resID);
4258 const int e = Res_GETENTRY(resID);
4259
4260 if (p < 0) {
4261 if (Res_GETPACKAGE(resID)+1 == 0) {
4262 ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
4263 } else {
4264 #ifndef STATIC_ANDROIDFW_FOR_TOOLS
4265 ALOGW("No known package when getting name for resource number 0x%08x", resID);
4266 #endif
4267 }
4268 return false;
4269 }
4270 if (t < 0) {
4271 ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
4272 return false;
4273 }
4274
4275 const PackageGroup* const grp = mPackageGroups[p];
4276 if (grp == NULL) {
4277 ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
4278 return false;
4279 }
4280
4281 Entry entry;
4282 status_t err = getEntry(grp, t, e, NULL, &entry);
4283 if (err != NO_ERROR) {
4284 return false;
4285 }
4286
4287 outName->package = grp->name.string();
4288 outName->packageLen = grp->name.size();
4289 if (allowUtf8) {
4290 outName->type8 = entry.typeStr.string8(&outName->typeLen);
4291 outName->name8 = entry.keyStr.string8(&outName->nameLen);
4292 } else {
4293 outName->type8 = NULL;
4294 outName->name8 = NULL;
4295 }
4296 if (outName->type8 == NULL) {
4297 outName->type = entry.typeStr.string16(&outName->typeLen);
4298 // If we have a bad index for some reason, we should abort.
4299 if (outName->type == NULL) {
4300 return false;
4301 }
4302 }
4303 if (outName->name8 == NULL) {
4304 outName->name = entry.keyStr.string16(&outName->nameLen);
4305 // If we have a bad index for some reason, we should abort.
4306 if (outName->name == NULL) {
4307 return false;
4308 }
4309 }
4310
4311 return true;
4312 }
4313
getResource(uint32_t resID,Res_value * outValue,bool mayBeBag,uint16_t density,uint32_t * outSpecFlags,ResTable_config * outConfig) const4314 ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
4315 uint32_t* outSpecFlags, ResTable_config* outConfig) const
4316 {
4317 if (mError != NO_ERROR) {
4318 return mError;
4319 }
4320
4321 const ssize_t p = getResourcePackageIndex(resID);
4322 const int t = Res_GETTYPE(resID);
4323 const int e = Res_GETENTRY(resID);
4324
4325 if (p < 0) {
4326 if (Res_GETPACKAGE(resID)+1 == 0) {
4327 ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
4328 } else {
4329 ALOGW("No known package when getting value for resource number 0x%08x", resID);
4330 }
4331 return BAD_INDEX;
4332 }
4333 if (t < 0) {
4334 ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
4335 return BAD_INDEX;
4336 }
4337
4338 const PackageGroup* const grp = mPackageGroups[p];
4339 if (grp == NULL) {
4340 ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
4341 return BAD_INDEX;
4342 }
4343
4344 // Allow overriding density
4345 ResTable_config desiredConfig = mParams;
4346 if (density > 0) {
4347 desiredConfig.density = density;
4348 }
4349
4350 Entry entry;
4351 status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
4352 if (err != NO_ERROR) {
4353 // Only log the failure when we're not running on the host as
4354 // part of a tool. The caller will do its own logging.
4355 #ifndef STATIC_ANDROIDFW_FOR_TOOLS
4356 ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
4357 resID, t, e, err);
4358 #endif
4359 return err;
4360 }
4361
4362 if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
4363 if (!mayBeBag) {
4364 ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
4365 }
4366 return BAD_VALUE;
4367 }
4368
4369 const Res_value* value = reinterpret_cast<const Res_value*>(
4370 reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
4371
4372 outValue->size = dtohs(value->size);
4373 outValue->res0 = value->res0;
4374 outValue->dataType = value->dataType;
4375 outValue->data = dtohl(value->data);
4376
4377 // The reference may be pointing to a resource in a shared library. These
4378 // references have build-time generated package IDs. These ids may not match
4379 // the actual package IDs of the corresponding packages in this ResTable.
4380 // We need to fix the package ID based on a mapping.
4381 if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
4382 ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
4383 return BAD_VALUE;
4384 }
4385
4386 if (kDebugTableNoisy) {
4387 size_t len;
4388 printf("Found value: pkg=%zu, type=%d, str=%s, int=%d\n",
4389 entry.package->header->index,
4390 outValue->dataType,
4391 outValue->dataType == Res_value::TYPE_STRING ?
4392 String8(entry.package->header->values.stringAt(outValue->data, &len)).string() :
4393 "",
4394 outValue->data);
4395 }
4396
4397 if (outSpecFlags != NULL) {
4398 *outSpecFlags = entry.specFlags;
4399 }
4400
4401 if (outConfig != NULL) {
4402 *outConfig = entry.config;
4403 }
4404
4405 return entry.package->header->index;
4406 }
4407
resolveReference(Res_value * value,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * outConfig) const4408 ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
4409 uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
4410 ResTable_config* outConfig) const
4411 {
4412 int count=0;
4413 while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
4414 && value->data != 0 && count < 20) {
4415 if (outLastRef) *outLastRef = value->data;
4416 uint32_t newFlags = 0;
4417 const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
4418 outConfig);
4419 if (newIndex == BAD_INDEX) {
4420 return BAD_INDEX;
4421 }
4422 if (kDebugTableTheme) {
4423 ALOGI("Resolving reference 0x%x: newIndex=%d, type=0x%x, data=0x%x\n",
4424 value->data, (int)newIndex, (int)value->dataType, value->data);
4425 }
4426 //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
4427 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
4428 if (newIndex < 0) {
4429 // This can fail if the resource being referenced is a style...
4430 // in this case, just return the reference, and expect the
4431 // caller to deal with.
4432 return blockIndex;
4433 }
4434 blockIndex = newIndex;
4435 count++;
4436 }
4437 return blockIndex;
4438 }
4439
valueToString(const Res_value * value,size_t stringBlock,char16_t[TMP_BUFFER_SIZE],size_t * outLen) const4440 const char16_t* ResTable::valueToString(
4441 const Res_value* value, size_t stringBlock,
4442 char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
4443 {
4444 if (!value) {
4445 return NULL;
4446 }
4447 if (value->dataType == value->TYPE_STRING) {
4448 return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
4449 }
4450 // XXX do int to string conversions.
4451 return NULL;
4452 }
4453
lockBag(uint32_t resID,const bag_entry ** outBag) const4454 ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
4455 {
4456 mLock.lock();
4457 ssize_t err = getBagLocked(resID, outBag);
4458 if (err < NO_ERROR) {
4459 //printf("*** get failed! unlocking\n");
4460 mLock.unlock();
4461 }
4462 return err;
4463 }
4464
unlockBag(const bag_entry *) const4465 void ResTable::unlockBag(const bag_entry* /*bag*/) const
4466 {
4467 //printf("<<< unlockBag %p\n", this);
4468 mLock.unlock();
4469 }
4470
lock() const4471 void ResTable::lock() const
4472 {
4473 mLock.lock();
4474 }
4475
unlock() const4476 void ResTable::unlock() const
4477 {
4478 mLock.unlock();
4479 }
4480
getBagLocked(uint32_t resID,const bag_entry ** outBag,uint32_t * outTypeSpecFlags) const4481 ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
4482 uint32_t* outTypeSpecFlags) const
4483 {
4484 if (mError != NO_ERROR) {
4485 return mError;
4486 }
4487
4488 const ssize_t p = getResourcePackageIndex(resID);
4489 const int t = Res_GETTYPE(resID);
4490 const int e = Res_GETENTRY(resID);
4491
4492 if (p < 0) {
4493 ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
4494 return BAD_INDEX;
4495 }
4496 if (t < 0) {
4497 ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
4498 return BAD_INDEX;
4499 }
4500
4501 //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
4502 PackageGroup* const grp = mPackageGroups[p];
4503 if (grp == NULL) {
4504 ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
4505 return BAD_INDEX;
4506 }
4507
4508 const TypeList& typeConfigs = grp->types[t];
4509 if (typeConfigs.isEmpty()) {
4510 ALOGW("Type identifier 0x%x does not exist.", t+1);
4511 return BAD_INDEX;
4512 }
4513
4514 const size_t NENTRY = typeConfigs[0]->entryCount;
4515 if (e >= (int)NENTRY) {
4516 ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
4517 e, (int)typeConfigs[0]->entryCount);
4518 return BAD_INDEX;
4519 }
4520
4521 // First see if we've already computed this bag...
4522 TypeCacheEntry& cacheEntry = grp->typeCacheEntries.editItemAt(t);
4523 bag_set** typeSet = cacheEntry.cachedBags;
4524 if (typeSet) {
4525 bag_set* set = typeSet[e];
4526 if (set) {
4527 if (set != (bag_set*)0xFFFFFFFF) {
4528 if (outTypeSpecFlags != NULL) {
4529 *outTypeSpecFlags = set->typeSpecFlags;
4530 }
4531 *outBag = (bag_entry*)(set+1);
4532 if (kDebugTableSuperNoisy) {
4533 ALOGI("Found existing bag for: 0x%x\n", resID);
4534 }
4535 return set->numAttrs;
4536 }
4537 ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
4538 resID);
4539 return BAD_INDEX;
4540 }
4541 }
4542
4543 // Bag not found, we need to compute it!
4544 if (!typeSet) {
4545 typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
4546 if (!typeSet) return NO_MEMORY;
4547 cacheEntry.cachedBags = typeSet;
4548 }
4549
4550 // Mark that we are currently working on this one.
4551 typeSet[e] = (bag_set*)0xFFFFFFFF;
4552
4553 if (kDebugTableNoisy) {
4554 ALOGI("Building bag: %x\n", resID);
4555 }
4556
4557 // Now collect all bag attributes
4558 Entry entry;
4559 status_t err = getEntry(grp, t, e, &mParams, &entry);
4560 if (err != NO_ERROR) {
4561 return err;
4562 }
4563
4564 const uint16_t entrySize = dtohs(entry.entry->size);
4565 const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
4566 ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
4567 const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
4568 ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
4569
4570 size_t N = count;
4571
4572 if (kDebugTableNoisy) {
4573 ALOGI("Found map: size=%x parent=%x count=%d\n", entrySize, parent, count);
4574
4575 // If this map inherits from another, we need to start
4576 // with its parent's values. Otherwise start out empty.
4577 ALOGI("Creating new bag, entrySize=0x%08x, parent=0x%08x\n", entrySize, parent);
4578 }
4579
4580 // This is what we are building.
4581 bag_set* set = NULL;
4582
4583 if (parent) {
4584 uint32_t resolvedParent = parent;
4585
4586 // Bags encode a parent reference without using the standard
4587 // Res_value structure. That means we must always try to
4588 // resolve a parent reference in case it is actually a
4589 // TYPE_DYNAMIC_REFERENCE.
4590 status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
4591 if (err != NO_ERROR) {
4592 ALOGE("Failed resolving bag parent id 0x%08x", parent);
4593 return UNKNOWN_ERROR;
4594 }
4595
4596 const bag_entry* parentBag;
4597 uint32_t parentTypeSpecFlags = 0;
4598 const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
4599 const size_t NT = ((NP >= 0) ? NP : 0) + N;
4600 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
4601 if (set == NULL) {
4602 return NO_MEMORY;
4603 }
4604 if (NP > 0) {
4605 memcpy(set+1, parentBag, NP*sizeof(bag_entry));
4606 set->numAttrs = NP;
4607 if (kDebugTableNoisy) {
4608 ALOGI("Initialized new bag with %zd inherited attributes.\n", NP);
4609 }
4610 } else {
4611 if (kDebugTableNoisy) {
4612 ALOGI("Initialized new bag with no inherited attributes.\n");
4613 }
4614 set->numAttrs = 0;
4615 }
4616 set->availAttrs = NT;
4617 set->typeSpecFlags = parentTypeSpecFlags;
4618 } else {
4619 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
4620 if (set == NULL) {
4621 return NO_MEMORY;
4622 }
4623 set->numAttrs = 0;
4624 set->availAttrs = N;
4625 set->typeSpecFlags = 0;
4626 }
4627
4628 set->typeSpecFlags |= entry.specFlags;
4629
4630 // Now merge in the new attributes...
4631 size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
4632 + dtohs(entry.entry->size);
4633 const ResTable_map* map;
4634 bag_entry* entries = (bag_entry*)(set+1);
4635 size_t curEntry = 0;
4636 uint32_t pos = 0;
4637 if (kDebugTableNoisy) {
4638 ALOGI("Starting with set %p, entries=%p, avail=%zu\n", set, entries, set->availAttrs);
4639 }
4640 while (pos < count) {
4641 if (kDebugTableNoisy) {
4642 ALOGI("Now at %p\n", (void*)curOff);
4643 }
4644
4645 if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
4646 ALOGW("ResTable_map at %d is beyond type chunk data %d",
4647 (int)curOff, dtohl(entry.type->header.size));
4648 free(set);
4649 return BAD_TYPE;
4650 }
4651 map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
4652 N++;
4653
4654 uint32_t newName = htodl(map->name.ident);
4655 if (!Res_INTERNALID(newName)) {
4656 // Attributes don't have a resource id as the name. They specify
4657 // other data, which would be wrong to change via a lookup.
4658 if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
4659 ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
4660 (int) curOff, (int) newName);
4661 free(set);
4662 return UNKNOWN_ERROR;
4663 }
4664 }
4665
4666 bool isInside;
4667 uint32_t oldName = 0;
4668 while ((isInside=(curEntry < set->numAttrs))
4669 && (oldName=entries[curEntry].map.name.ident) < newName) {
4670 if (kDebugTableNoisy) {
4671 ALOGI("#%zu: Keeping existing attribute: 0x%08x\n",
4672 curEntry, entries[curEntry].map.name.ident);
4673 }
4674 curEntry++;
4675 }
4676
4677 if ((!isInside) || oldName != newName) {
4678 // This is a new attribute... figure out what to do with it.
4679 if (set->numAttrs >= set->availAttrs) {
4680 // Need to alloc more memory...
4681 const size_t newAvail = set->availAttrs+N;
4682 void *oldSet = set;
4683 set = (bag_set*)realloc(set,
4684 sizeof(bag_set)
4685 + sizeof(bag_entry)*newAvail);
4686 if (set == NULL) {
4687 free(oldSet);
4688 return NO_MEMORY;
4689 }
4690 set->availAttrs = newAvail;
4691 entries = (bag_entry*)(set+1);
4692 if (kDebugTableNoisy) {
4693 ALOGI("Reallocated set %p, entries=%p, avail=%zu\n",
4694 set, entries, set->availAttrs);
4695 }
4696 }
4697 if (isInside) {
4698 // Going in the middle, need to make space.
4699 memmove(entries+curEntry+1, entries+curEntry,
4700 sizeof(bag_entry)*(set->numAttrs-curEntry));
4701 set->numAttrs++;
4702 }
4703 if (kDebugTableNoisy) {
4704 ALOGI("#%zu: Inserting new attribute: 0x%08x\n", curEntry, newName);
4705 }
4706 } else {
4707 if (kDebugTableNoisy) {
4708 ALOGI("#%zu: Replacing existing attribute: 0x%08x\n", curEntry, oldName);
4709 }
4710 }
4711
4712 bag_entry* cur = entries+curEntry;
4713
4714 cur->stringBlock = entry.package->header->index;
4715 cur->map.name.ident = newName;
4716 cur->map.value.copyFrom_dtoh(map->value);
4717 status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
4718 if (err != NO_ERROR) {
4719 ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
4720 return UNKNOWN_ERROR;
4721 }
4722
4723 if (kDebugTableNoisy) {
4724 ALOGI("Setting entry #%zu %p: block=%zd, name=0x%08d, type=%d, data=0x%08x\n",
4725 curEntry, cur, cur->stringBlock, cur->map.name.ident,
4726 cur->map.value.dataType, cur->map.value.data);
4727 }
4728
4729 // On to the next!
4730 curEntry++;
4731 pos++;
4732 const size_t size = dtohs(map->value.size);
4733 curOff += size + sizeof(*map)-sizeof(map->value);
4734 }
4735
4736 if (curEntry > set->numAttrs) {
4737 set->numAttrs = curEntry;
4738 }
4739
4740 // And this is it...
4741 typeSet[e] = set;
4742 if (set) {
4743 if (outTypeSpecFlags != NULL) {
4744 *outTypeSpecFlags = set->typeSpecFlags;
4745 }
4746 *outBag = (bag_entry*)(set+1);
4747 if (kDebugTableNoisy) {
4748 ALOGI("Returning %zu attrs\n", set->numAttrs);
4749 }
4750 return set->numAttrs;
4751 }
4752 return BAD_INDEX;
4753 }
4754
setParameters(const ResTable_config * params)4755 void ResTable::setParameters(const ResTable_config* params)
4756 {
4757 AutoMutex _lock(mLock);
4758 AutoMutex _lock2(mFilteredConfigLock);
4759
4760 if (kDebugTableGetEntry) {
4761 ALOGI("Setting parameters: %s\n", params->toString().string());
4762 }
4763 mParams = *params;
4764 for (size_t p = 0; p < mPackageGroups.size(); p++) {
4765 PackageGroup* packageGroup = mPackageGroups.editItemAt(p);
4766 if (kDebugTableNoisy) {
4767 ALOGI("CLEARING BAGS FOR GROUP %zu!", p);
4768 }
4769 packageGroup->clearBagCache();
4770
4771 // Find which configurations match the set of parameters. This allows for a much
4772 // faster lookup in getEntry() if the set of values is narrowed down.
4773 for (size_t t = 0; t < packageGroup->types.size(); t++) {
4774 if (packageGroup->types[t].isEmpty()) {
4775 continue;
4776 }
4777
4778 TypeList& typeList = packageGroup->types.editItemAt(t);
4779
4780 // Retrieve the cache entry for this type.
4781 TypeCacheEntry& cacheEntry = packageGroup->typeCacheEntries.editItemAt(t);
4782
4783 for (size_t ts = 0; ts < typeList.size(); ts++) {
4784 Type* type = typeList.editItemAt(ts);
4785
4786 std::shared_ptr<Vector<const ResTable_type*>> newFilteredConfigs =
4787 std::make_shared<Vector<const ResTable_type*>>();
4788
4789 for (size_t ti = 0; ti < type->configs.size(); ti++) {
4790 ResTable_config config;
4791 config.copyFromDtoH(type->configs[ti]->config);
4792
4793 if (config.match(mParams)) {
4794 newFilteredConfigs->add(type->configs[ti]);
4795 }
4796 }
4797
4798 if (kDebugTableNoisy) {
4799 ALOGD("Updating pkg=%zu type=%zu with %zu filtered configs",
4800 p, t, newFilteredConfigs->size());
4801 }
4802
4803 cacheEntry.filteredConfigs.add(newFilteredConfigs);
4804 }
4805 }
4806 }
4807 }
4808
getParameters(ResTable_config * params) const4809 void ResTable::getParameters(ResTable_config* params) const
4810 {
4811 mLock.lock();
4812 *params = mParams;
4813 mLock.unlock();
4814 }
4815
4816 struct id_name_map {
4817 uint32_t id;
4818 size_t len;
4819 char16_t name[6];
4820 };
4821
4822 const static id_name_map ID_NAMES[] = {
4823 { ResTable_map::ATTR_TYPE, 5, { '^', 't', 'y', 'p', 'e' } },
4824 { ResTable_map::ATTR_L10N, 5, { '^', 'l', '1', '0', 'n' } },
4825 { ResTable_map::ATTR_MIN, 4, { '^', 'm', 'i', 'n' } },
4826 { ResTable_map::ATTR_MAX, 4, { '^', 'm', 'a', 'x' } },
4827 { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4828 { ResTable_map::ATTR_ZERO, 5, { '^', 'z', 'e', 'r', 'o' } },
4829 { ResTable_map::ATTR_ONE, 4, { '^', 'o', 'n', 'e' } },
4830 { ResTable_map::ATTR_TWO, 4, { '^', 't', 'w', 'o' } },
4831 { ResTable_map::ATTR_FEW, 4, { '^', 'f', 'e', 'w' } },
4832 { ResTable_map::ATTR_MANY, 5, { '^', 'm', 'a', 'n', 'y' } },
4833 };
4834
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) const4835 uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4836 const char16_t* type, size_t typeLen,
4837 const char16_t* package,
4838 size_t packageLen,
4839 uint32_t* outTypeSpecFlags) const
4840 {
4841 if (kDebugTableSuperNoisy) {
4842 printf("Identifier for name: error=%d\n", mError);
4843 }
4844
4845 // Check for internal resource identifier as the very first thing, so
4846 // that we will always find them even when there are no resources.
4847 if (name[0] == '^') {
4848 const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4849 size_t len;
4850 for (int i=0; i<N; i++) {
4851 const id_name_map* m = ID_NAMES + i;
4852 len = m->len;
4853 if (len != nameLen) {
4854 continue;
4855 }
4856 for (size_t j=1; j<len; j++) {
4857 if (m->name[j] != name[j]) {
4858 goto nope;
4859 }
4860 }
4861 if (outTypeSpecFlags) {
4862 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4863 }
4864 return m->id;
4865 nope:
4866 ;
4867 }
4868 if (nameLen > 7) {
4869 if (name[1] == 'i' && name[2] == 'n'
4870 && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4871 && name[6] == '_') {
4872 int index = atoi(String8(name + 7, nameLen - 7).string());
4873 if (Res_CHECKID(index)) {
4874 ALOGW("Array resource index: %d is too large.",
4875 index);
4876 return 0;
4877 }
4878 if (outTypeSpecFlags) {
4879 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4880 }
4881 return Res_MAKEARRAY(index);
4882 }
4883 }
4884 return 0;
4885 }
4886
4887 if (mError != NO_ERROR) {
4888 return 0;
4889 }
4890
4891 bool fakePublic = false;
4892
4893 // Figure out the package and type we are looking in...
4894
4895 const char16_t* packageEnd = NULL;
4896 const char16_t* typeEnd = NULL;
4897 const char16_t* const nameEnd = name+nameLen;
4898 const char16_t* p = name;
4899 while (p < nameEnd) {
4900 if (*p == ':') packageEnd = p;
4901 else if (*p == '/') typeEnd = p;
4902 p++;
4903 }
4904 if (*name == '@') {
4905 name++;
4906 if (*name == '*') {
4907 fakePublic = true;
4908 name++;
4909 }
4910 }
4911 if (name >= nameEnd) {
4912 return 0;
4913 }
4914
4915 if (packageEnd) {
4916 package = name;
4917 packageLen = packageEnd-name;
4918 name = packageEnd+1;
4919 } else if (!package) {
4920 return 0;
4921 }
4922
4923 if (typeEnd) {
4924 type = name;
4925 typeLen = typeEnd-name;
4926 name = typeEnd+1;
4927 } else if (!type) {
4928 return 0;
4929 }
4930
4931 if (name >= nameEnd) {
4932 return 0;
4933 }
4934 nameLen = nameEnd-name;
4935
4936 if (kDebugTableNoisy) {
4937 printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4938 String8(type, typeLen).string(),
4939 String8(name, nameLen).string(),
4940 String8(package, packageLen).string());
4941 }
4942
4943 const String16 attr("attr");
4944 const String16 attrPrivate("^attr-private");
4945
4946 const size_t NG = mPackageGroups.size();
4947 for (size_t ig=0; ig<NG; ig++) {
4948 const PackageGroup* group = mPackageGroups[ig];
4949
4950 if (strzcmp16(package, packageLen,
4951 group->name.string(), group->name.size())) {
4952 if (kDebugTableNoisy) {
4953 printf("Skipping package group: %s\n", String8(group->name).string());
4954 }
4955 continue;
4956 }
4957
4958 const size_t packageCount = group->packages.size();
4959 for (size_t pi = 0; pi < packageCount; pi++) {
4960 const char16_t* targetType = type;
4961 size_t targetTypeLen = typeLen;
4962
4963 do {
4964 ssize_t ti = group->packages[pi]->typeStrings.indexOfString(
4965 targetType, targetTypeLen);
4966 if (ti < 0) {
4967 continue;
4968 }
4969
4970 ti += group->packages[pi]->typeIdOffset;
4971
4972 const uint32_t identifier = findEntry(group, ti, name, nameLen,
4973 outTypeSpecFlags);
4974 if (identifier != 0) {
4975 if (fakePublic && outTypeSpecFlags) {
4976 *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4977 }
4978 return identifier;
4979 }
4980 } while (strzcmp16(attr.string(), attr.size(), targetType, targetTypeLen) == 0
4981 && (targetType = attrPrivate.string())
4982 && (targetTypeLen = attrPrivate.size())
4983 );
4984 }
4985 }
4986 return 0;
4987 }
4988
findEntry(const PackageGroup * group,ssize_t typeIndex,const char16_t * name,size_t nameLen,uint32_t * outTypeSpecFlags) const4989 uint32_t ResTable::findEntry(const PackageGroup* group, ssize_t typeIndex, const char16_t* name,
4990 size_t nameLen, uint32_t* outTypeSpecFlags) const {
4991 const TypeList& typeList = group->types[typeIndex];
4992 const size_t typeCount = typeList.size();
4993 for (size_t i = 0; i < typeCount; i++) {
4994 const Type* t = typeList[i];
4995 const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4996 if (ei < 0) {
4997 continue;
4998 }
4999
5000 const size_t configCount = t->configs.size();
5001 for (size_t j = 0; j < configCount; j++) {
5002 const TypeVariant tv(t->configs[j]);
5003 for (TypeVariant::iterator iter = tv.beginEntries();
5004 iter != tv.endEntries();
5005 iter++) {
5006 const ResTable_entry* entry = *iter;
5007 if (entry == NULL) {
5008 continue;
5009 }
5010
5011 if (dtohl(entry->key.index) == (size_t) ei) {
5012 uint32_t resId = Res_MAKEID(group->id - 1, typeIndex, iter.index());
5013 if (outTypeSpecFlags) {
5014 Entry result;
5015 if (getEntry(group, typeIndex, iter.index(), NULL, &result) != NO_ERROR) {
5016 ALOGW("Failed to find spec flags for 0x%08x", resId);
5017 return 0;
5018 }
5019 *outTypeSpecFlags = result.specFlags;
5020 }
5021 return resId;
5022 }
5023 }
5024 }
5025 }
5026 return 0;
5027 }
5028
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)5029 bool ResTable::expandResourceRef(const char16_t* refStr, size_t refLen,
5030 String16* outPackage,
5031 String16* outType,
5032 String16* outName,
5033 const String16* defType,
5034 const String16* defPackage,
5035 const char** outErrorMsg,
5036 bool* outPublicOnly)
5037 {
5038 const char16_t* packageEnd = NULL;
5039 const char16_t* typeEnd = NULL;
5040 const char16_t* p = refStr;
5041 const char16_t* const end = p + refLen;
5042 while (p < end) {
5043 if (*p == ':') packageEnd = p;
5044 else if (*p == '/') {
5045 typeEnd = p;
5046 break;
5047 }
5048 p++;
5049 }
5050 p = refStr;
5051 if (*p == '@') p++;
5052
5053 if (outPublicOnly != NULL) {
5054 *outPublicOnly = true;
5055 }
5056 if (*p == '*') {
5057 p++;
5058 if (outPublicOnly != NULL) {
5059 *outPublicOnly = false;
5060 }
5061 }
5062
5063 if (packageEnd) {
5064 *outPackage = String16(p, packageEnd-p);
5065 p = packageEnd+1;
5066 } else {
5067 if (!defPackage) {
5068 if (outErrorMsg) {
5069 *outErrorMsg = "No resource package specified";
5070 }
5071 return false;
5072 }
5073 *outPackage = *defPackage;
5074 }
5075 if (typeEnd) {
5076 *outType = String16(p, typeEnd-p);
5077 p = typeEnd+1;
5078 } else {
5079 if (!defType) {
5080 if (outErrorMsg) {
5081 *outErrorMsg = "No resource type specified";
5082 }
5083 return false;
5084 }
5085 *outType = *defType;
5086 }
5087 *outName = String16(p, end-p);
5088 if(**outPackage == 0) {
5089 if(outErrorMsg) {
5090 *outErrorMsg = "Resource package cannot be an empty string";
5091 }
5092 return false;
5093 }
5094 if(**outType == 0) {
5095 if(outErrorMsg) {
5096 *outErrorMsg = "Resource type cannot be an empty string";
5097 }
5098 return false;
5099 }
5100 if(**outName == 0) {
5101 if(outErrorMsg) {
5102 *outErrorMsg = "Resource id cannot be an empty string";
5103 }
5104 return false;
5105 }
5106 return true;
5107 }
5108
get_hex(char c,bool * outError)5109 static uint32_t get_hex(char c, bool* outError)
5110 {
5111 if (c >= '0' && c <= '9') {
5112 return c - '0';
5113 } else if (c >= 'a' && c <= 'f') {
5114 return c - 'a' + 0xa;
5115 } else if (c >= 'A' && c <= 'F') {
5116 return c - 'A' + 0xa;
5117 }
5118 *outError = true;
5119 return 0;
5120 }
5121
5122 struct unit_entry
5123 {
5124 const char* name;
5125 size_t len;
5126 uint8_t type;
5127 uint32_t unit;
5128 float scale;
5129 };
5130
5131 static const unit_entry unitNames[] = {
5132 { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
5133 { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
5134 { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
5135 { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
5136 { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
5137 { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
5138 { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
5139 { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
5140 { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
5141 { NULL, 0, 0, 0, 0 }
5142 };
5143
parse_unit(const char * str,Res_value * outValue,float * outScale,const char ** outEnd)5144 static bool parse_unit(const char* str, Res_value* outValue,
5145 float* outScale, const char** outEnd)
5146 {
5147 const char* end = str;
5148 while (*end != 0 && !isspace((unsigned char)*end)) {
5149 end++;
5150 }
5151 const size_t len = end-str;
5152
5153 const char* realEnd = end;
5154 while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
5155 realEnd++;
5156 }
5157 if (*realEnd != 0) {
5158 return false;
5159 }
5160
5161 const unit_entry* cur = unitNames;
5162 while (cur->name) {
5163 if (len == cur->len && strncmp(cur->name, str, len) == 0) {
5164 outValue->dataType = cur->type;
5165 outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
5166 *outScale = cur->scale;
5167 *outEnd = end;
5168 //printf("Found unit %s for %s\n", cur->name, str);
5169 return true;
5170 }
5171 cur++;
5172 }
5173
5174 return false;
5175 }
5176
U16StringToInt(const char16_t * s,size_t len,Res_value * outValue)5177 bool U16StringToInt(const char16_t* s, size_t len, Res_value* outValue)
5178 {
5179 while (len > 0 && isspace16(*s)) {
5180 s++;
5181 len--;
5182 }
5183
5184 if (len <= 0) {
5185 return false;
5186 }
5187
5188 size_t i = 0;
5189 int64_t val = 0;
5190 bool neg = false;
5191
5192 if (*s == '-') {
5193 neg = true;
5194 i++;
5195 }
5196
5197 if (s[i] < '0' || s[i] > '9') {
5198 return false;
5199 }
5200
5201 static_assert(std::is_same<uint32_t, Res_value::data_type>::value,
5202 "Res_value::data_type has changed. The range checks in this "
5203 "function are no longer correct.");
5204
5205 // Decimal or hex?
5206 bool isHex;
5207 if (len > 1 && s[i] == '0' && s[i+1] == 'x') {
5208 isHex = true;
5209 i += 2;
5210
5211 if (neg) {
5212 return false;
5213 }
5214
5215 if (i == len) {
5216 // Just u"0x"
5217 return false;
5218 }
5219
5220 bool error = false;
5221 while (i < len && !error) {
5222 val = (val*16) + get_hex(s[i], &error);
5223 i++;
5224
5225 if (val > std::numeric_limits<uint32_t>::max()) {
5226 return false;
5227 }
5228 }
5229 if (error) {
5230 return false;
5231 }
5232 } else {
5233 isHex = false;
5234 while (i < len) {
5235 if (s[i] < '0' || s[i] > '9') {
5236 return false;
5237 }
5238 val = (val*10) + s[i]-'0';
5239 i++;
5240
5241 if ((neg && -val < std::numeric_limits<int32_t>::min()) ||
5242 (!neg && val > std::numeric_limits<int32_t>::max())) {
5243 return false;
5244 }
5245 }
5246 }
5247
5248 if (neg) val = -val;
5249
5250 while (i < len && isspace16(s[i])) {
5251 i++;
5252 }
5253
5254 if (i != len) {
5255 return false;
5256 }
5257
5258 if (outValue) {
5259 outValue->dataType =
5260 isHex ? outValue->TYPE_INT_HEX : outValue->TYPE_INT_DEC;
5261 outValue->data = static_cast<Res_value::data_type>(val);
5262 }
5263 return true;
5264 }
5265
stringToInt(const char16_t * s,size_t len,Res_value * outValue)5266 bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
5267 {
5268 return U16StringToInt(s, len, outValue);
5269 }
5270
stringToFloat(const char16_t * s,size_t len,Res_value * outValue)5271 bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
5272 {
5273 while (len > 0 && isspace16(*s)) {
5274 s++;
5275 len--;
5276 }
5277
5278 if (len <= 0) {
5279 return false;
5280 }
5281
5282 char buf[128];
5283 int i=0;
5284 while (len > 0 && *s != 0 && i < 126) {
5285 if (*s > 255) {
5286 return false;
5287 }
5288 buf[i++] = *s++;
5289 len--;
5290 }
5291
5292 if (len > 0) {
5293 return false;
5294 }
5295 if ((buf[0] < '0' || buf[0] > '9') && buf[0] != '.' && buf[0] != '-' && buf[0] != '+') {
5296 return false;
5297 }
5298
5299 buf[i] = 0;
5300 const char* end;
5301 float f = strtof(buf, (char**)&end);
5302
5303 if (*end != 0 && !isspace((unsigned char)*end)) {
5304 // Might be a unit...
5305 float scale;
5306 if (parse_unit(end, outValue, &scale, &end)) {
5307 f *= scale;
5308 const bool neg = f < 0;
5309 if (neg) f = -f;
5310 uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
5311 uint32_t radix;
5312 uint32_t shift;
5313 if ((bits&0x7fffff) == 0) {
5314 // Always use 23p0 if there is no fraction, just to make
5315 // things easier to read.
5316 radix = Res_value::COMPLEX_RADIX_23p0;
5317 shift = 23;
5318 } else if ((bits&0xffffffffff800000LL) == 0) {
5319 // Magnitude is zero -- can fit in 0 bits of precision.
5320 radix = Res_value::COMPLEX_RADIX_0p23;
5321 shift = 0;
5322 } else if ((bits&0xffffffff80000000LL) == 0) {
5323 // Magnitude can fit in 8 bits of precision.
5324 radix = Res_value::COMPLEX_RADIX_8p15;
5325 shift = 8;
5326 } else if ((bits&0xffffff8000000000LL) == 0) {
5327 // Magnitude can fit in 16 bits of precision.
5328 radix = Res_value::COMPLEX_RADIX_16p7;
5329 shift = 16;
5330 } else {
5331 // Magnitude needs entire range, so no fractional part.
5332 radix = Res_value::COMPLEX_RADIX_23p0;
5333 shift = 23;
5334 }
5335 int32_t mantissa = (int32_t)(
5336 (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
5337 if (neg) {
5338 mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
5339 }
5340 outValue->data |=
5341 (radix<<Res_value::COMPLEX_RADIX_SHIFT)
5342 | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
5343 //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
5344 // f * (neg ? -1 : 1), bits, f*(1<<23),
5345 // radix, shift, outValue->data);
5346 return true;
5347 }
5348 return false;
5349 }
5350
5351 while (*end != 0 && isspace((unsigned char)*end)) {
5352 end++;
5353 }
5354
5355 if (*end == 0) {
5356 if (outValue) {
5357 outValue->dataType = outValue->TYPE_FLOAT;
5358 *(float*)(&outValue->data) = f;
5359 return true;
5360 }
5361 }
5362
5363 return false;
5364 }
5365
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) const5366 bool ResTable::stringToValue(Res_value* outValue, String16* outString,
5367 const char16_t* s, size_t len,
5368 bool preserveSpaces, bool coerceType,
5369 uint32_t attrID,
5370 const String16* defType,
5371 const String16* defPackage,
5372 Accessor* accessor,
5373 void* accessorCookie,
5374 uint32_t attrType,
5375 bool enforcePrivate) const
5376 {
5377 bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
5378 const char* errorMsg = NULL;
5379
5380 outValue->size = sizeof(Res_value);
5381 outValue->res0 = 0;
5382
5383 // First strip leading/trailing whitespace. Do this before handling
5384 // escapes, so they can be used to force whitespace into the string.
5385 if (!preserveSpaces) {
5386 while (len > 0 && isspace16(*s)) {
5387 s++;
5388 len--;
5389 }
5390 while (len > 0 && isspace16(s[len-1])) {
5391 len--;
5392 }
5393 // If the string ends with '\', then we keep the space after it.
5394 if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
5395 len++;
5396 }
5397 }
5398
5399 //printf("Value for: %s\n", String8(s, len).string());
5400
5401 uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
5402 uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
5403 bool fromAccessor = false;
5404 if (attrID != 0 && !Res_INTERNALID(attrID)) {
5405 const ssize_t p = getResourcePackageIndex(attrID);
5406 const bag_entry* bag;
5407 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5408 //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
5409 if (cnt >= 0) {
5410 while (cnt > 0) {
5411 //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
5412 switch (bag->map.name.ident) {
5413 case ResTable_map::ATTR_TYPE:
5414 attrType = bag->map.value.data;
5415 break;
5416 case ResTable_map::ATTR_MIN:
5417 attrMin = bag->map.value.data;
5418 break;
5419 case ResTable_map::ATTR_MAX:
5420 attrMax = bag->map.value.data;
5421 break;
5422 case ResTable_map::ATTR_L10N:
5423 l10nReq = bag->map.value.data;
5424 break;
5425 }
5426 bag++;
5427 cnt--;
5428 }
5429 unlockBag(bag);
5430 } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
5431 fromAccessor = true;
5432 if (attrType == ResTable_map::TYPE_ENUM
5433 || attrType == ResTable_map::TYPE_FLAGS
5434 || attrType == ResTable_map::TYPE_INTEGER) {
5435 accessor->getAttributeMin(attrID, &attrMin);
5436 accessor->getAttributeMax(attrID, &attrMax);
5437 }
5438 if (localizationSetting) {
5439 l10nReq = accessor->getAttributeL10N(attrID);
5440 }
5441 }
5442 }
5443
5444 const bool canStringCoerce =
5445 coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
5446
5447 if (*s == '@') {
5448 outValue->dataType = outValue->TYPE_REFERENCE;
5449
5450 // Note: we don't check attrType here because the reference can
5451 // be to any other type; we just need to count on the client making
5452 // sure the referenced type is correct.
5453
5454 //printf("Looking up ref: %s\n", String8(s, len).string());
5455
5456 // It's a reference!
5457 if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
5458 // Special case @null as undefined. This will be converted by
5459 // AssetManager to TYPE_NULL with data DATA_NULL_UNDEFINED.
5460 outValue->data = 0;
5461 return true;
5462 } else if (len == 6 && s[1]=='e' && s[2]=='m' && s[3]=='p' && s[4]=='t' && s[5]=='y') {
5463 // Special case @empty as explicitly defined empty value.
5464 outValue->dataType = Res_value::TYPE_NULL;
5465 outValue->data = Res_value::DATA_NULL_EMPTY;
5466 return true;
5467 } else {
5468 bool createIfNotFound = false;
5469 const char16_t* resourceRefName;
5470 int resourceNameLen;
5471 if (len > 2 && s[1] == '+') {
5472 createIfNotFound = true;
5473 resourceRefName = s + 2;
5474 resourceNameLen = len - 2;
5475 } else if (len > 2 && s[1] == '*') {
5476 enforcePrivate = false;
5477 resourceRefName = s + 2;
5478 resourceNameLen = len - 2;
5479 } else {
5480 createIfNotFound = false;
5481 resourceRefName = s + 1;
5482 resourceNameLen = len - 1;
5483 }
5484 String16 package, type, name;
5485 if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
5486 defType, defPackage, &errorMsg)) {
5487 if (accessor != NULL) {
5488 accessor->reportError(accessorCookie, errorMsg);
5489 }
5490 return false;
5491 }
5492
5493 uint32_t specFlags = 0;
5494 uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
5495 type.size(), package.string(), package.size(), &specFlags);
5496 if (rid != 0) {
5497 if (enforcePrivate) {
5498 if (accessor == NULL || accessor->getAssetsPackage() != package) {
5499 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5500 if (accessor != NULL) {
5501 accessor->reportError(accessorCookie, "Resource is not public.");
5502 }
5503 return false;
5504 }
5505 }
5506 }
5507
5508 if (accessor) {
5509 rid = Res_MAKEID(
5510 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5511 Res_GETTYPE(rid), Res_GETENTRY(rid));
5512 if (kDebugTableNoisy) {
5513 ALOGI("Incl %s:%s/%s: 0x%08x\n",
5514 String8(package).string(), String8(type).string(),
5515 String8(name).string(), rid);
5516 }
5517 }
5518
5519 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5520 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5521 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5522 }
5523 outValue->data = rid;
5524 return true;
5525 }
5526
5527 if (accessor) {
5528 uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
5529 createIfNotFound);
5530 if (rid != 0) {
5531 if (kDebugTableNoisy) {
5532 ALOGI("Pckg %s:%s/%s: 0x%08x\n",
5533 String8(package).string(), String8(type).string(),
5534 String8(name).string(), rid);
5535 }
5536 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5537 if (packageId == 0x00) {
5538 outValue->data = rid;
5539 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5540 return true;
5541 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5542 // We accept packageId's generated as 0x01 in order to support
5543 // building the android system resources
5544 outValue->data = rid;
5545 return true;
5546 }
5547 }
5548 }
5549 }
5550
5551 if (accessor != NULL) {
5552 accessor->reportError(accessorCookie, "No resource found that matches the given name");
5553 }
5554 return false;
5555 }
5556
5557 // if we got to here, and localization is required and it's not a reference,
5558 // complain and bail.
5559 if (l10nReq == ResTable_map::L10N_SUGGESTED) {
5560 if (localizationSetting) {
5561 if (accessor != NULL) {
5562 accessor->reportError(accessorCookie, "This attribute must be localized.");
5563 }
5564 }
5565 }
5566
5567 if (*s == '#') {
5568 // It's a color! Convert to an integer of the form 0xaarrggbb.
5569 uint32_t color = 0;
5570 bool error = false;
5571 if (len == 4) {
5572 outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
5573 color |= 0xFF000000;
5574 color |= get_hex(s[1], &error) << 20;
5575 color |= get_hex(s[1], &error) << 16;
5576 color |= get_hex(s[2], &error) << 12;
5577 color |= get_hex(s[2], &error) << 8;
5578 color |= get_hex(s[3], &error) << 4;
5579 color |= get_hex(s[3], &error);
5580 } else if (len == 5) {
5581 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
5582 color |= get_hex(s[1], &error) << 28;
5583 color |= get_hex(s[1], &error) << 24;
5584 color |= get_hex(s[2], &error) << 20;
5585 color |= get_hex(s[2], &error) << 16;
5586 color |= get_hex(s[3], &error) << 12;
5587 color |= get_hex(s[3], &error) << 8;
5588 color |= get_hex(s[4], &error) << 4;
5589 color |= get_hex(s[4], &error);
5590 } else if (len == 7) {
5591 outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
5592 color |= 0xFF000000;
5593 color |= get_hex(s[1], &error) << 20;
5594 color |= get_hex(s[2], &error) << 16;
5595 color |= get_hex(s[3], &error) << 12;
5596 color |= get_hex(s[4], &error) << 8;
5597 color |= get_hex(s[5], &error) << 4;
5598 color |= get_hex(s[6], &error);
5599 } else if (len == 9) {
5600 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
5601 color |= get_hex(s[1], &error) << 28;
5602 color |= get_hex(s[2], &error) << 24;
5603 color |= get_hex(s[3], &error) << 20;
5604 color |= get_hex(s[4], &error) << 16;
5605 color |= get_hex(s[5], &error) << 12;
5606 color |= get_hex(s[6], &error) << 8;
5607 color |= get_hex(s[7], &error) << 4;
5608 color |= get_hex(s[8], &error);
5609 } else {
5610 error = true;
5611 }
5612 if (!error) {
5613 if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
5614 if (!canStringCoerce) {
5615 if (accessor != NULL) {
5616 accessor->reportError(accessorCookie,
5617 "Color types not allowed");
5618 }
5619 return false;
5620 }
5621 } else {
5622 outValue->data = color;
5623 //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
5624 return true;
5625 }
5626 } else {
5627 if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
5628 if (accessor != NULL) {
5629 accessor->reportError(accessorCookie, "Color value not valid --"
5630 " must be #rgb, #argb, #rrggbb, or #aarrggbb");
5631 }
5632 #if 0
5633 fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
5634 "Resource File", //(const char*)in->getPrintableSource(),
5635 String8(*curTag).string(),
5636 String8(s, len).string());
5637 #endif
5638 return false;
5639 }
5640 }
5641 }
5642
5643 if (*s == '?') {
5644 outValue->dataType = outValue->TYPE_ATTRIBUTE;
5645
5646 // Note: we don't check attrType here because the reference can
5647 // be to any other type; we just need to count on the client making
5648 // sure the referenced type is correct.
5649
5650 //printf("Looking up attr: %s\n", String8(s, len).string());
5651
5652 static const String16 attr16("attr");
5653 String16 package, type, name;
5654 if (!expandResourceRef(s+1, len-1, &package, &type, &name,
5655 &attr16, defPackage, &errorMsg)) {
5656 if (accessor != NULL) {
5657 accessor->reportError(accessorCookie, errorMsg);
5658 }
5659 return false;
5660 }
5661
5662 //printf("Pkg: %s, Type: %s, Name: %s\n",
5663 // String8(package).string(), String8(type).string(),
5664 // String8(name).string());
5665 uint32_t specFlags = 0;
5666 uint32_t rid =
5667 identifierForName(name.string(), name.size(),
5668 type.string(), type.size(),
5669 package.string(), package.size(), &specFlags);
5670 if (rid != 0) {
5671 if (enforcePrivate) {
5672 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5673 if (accessor != NULL) {
5674 accessor->reportError(accessorCookie, "Attribute is not public.");
5675 }
5676 return false;
5677 }
5678 }
5679
5680 if (accessor) {
5681 rid = Res_MAKEID(
5682 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5683 Res_GETTYPE(rid), Res_GETENTRY(rid));
5684 }
5685
5686 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5687 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5688 outValue->dataType = Res_value::TYPE_DYNAMIC_ATTRIBUTE;
5689 }
5690 outValue->data = rid;
5691 return true;
5692 }
5693
5694 if (accessor) {
5695 uint32_t rid = accessor->getCustomResource(package, type, name);
5696 if (rid != 0) {
5697 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5698 if (packageId == 0x00) {
5699 outValue->data = rid;
5700 outValue->dataType = Res_value::TYPE_DYNAMIC_ATTRIBUTE;
5701 return true;
5702 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5703 // We accept packageId's generated as 0x01 in order to support
5704 // building the android system resources
5705 outValue->data = rid;
5706 return true;
5707 }
5708 }
5709 }
5710
5711 if (accessor != NULL) {
5712 accessor->reportError(accessorCookie, "No resource found that matches the given name");
5713 }
5714 return false;
5715 }
5716
5717 if (stringToInt(s, len, outValue)) {
5718 if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
5719 // If this type does not allow integers, but does allow floats,
5720 // fall through on this error case because the float type should
5721 // be able to accept any integer value.
5722 if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
5723 if (accessor != NULL) {
5724 accessor->reportError(accessorCookie, "Integer types not allowed");
5725 }
5726 return false;
5727 }
5728 } else {
5729 if (((int32_t)outValue->data) < ((int32_t)attrMin)
5730 || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
5731 if (accessor != NULL) {
5732 accessor->reportError(accessorCookie, "Integer value out of range");
5733 }
5734 return false;
5735 }
5736 return true;
5737 }
5738 }
5739
5740 if (stringToFloat(s, len, outValue)) {
5741 if (outValue->dataType == Res_value::TYPE_DIMENSION) {
5742 if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
5743 return true;
5744 }
5745 if (!canStringCoerce) {
5746 if (accessor != NULL) {
5747 accessor->reportError(accessorCookie, "Dimension types not allowed");
5748 }
5749 return false;
5750 }
5751 } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
5752 if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
5753 return true;
5754 }
5755 if (!canStringCoerce) {
5756 if (accessor != NULL) {
5757 accessor->reportError(accessorCookie, "Fraction types not allowed");
5758 }
5759 return false;
5760 }
5761 } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
5762 if (!canStringCoerce) {
5763 if (accessor != NULL) {
5764 accessor->reportError(accessorCookie, "Float types not allowed");
5765 }
5766 return false;
5767 }
5768 } else {
5769 return true;
5770 }
5771 }
5772
5773 if (len == 4) {
5774 if ((s[0] == 't' || s[0] == 'T') &&
5775 (s[1] == 'r' || s[1] == 'R') &&
5776 (s[2] == 'u' || s[2] == 'U') &&
5777 (s[3] == 'e' || s[3] == 'E')) {
5778 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5779 if (!canStringCoerce) {
5780 if (accessor != NULL) {
5781 accessor->reportError(accessorCookie, "Boolean types not allowed");
5782 }
5783 return false;
5784 }
5785 } else {
5786 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5787 outValue->data = (uint32_t)-1;
5788 return true;
5789 }
5790 }
5791 }
5792
5793 if (len == 5) {
5794 if ((s[0] == 'f' || s[0] == 'F') &&
5795 (s[1] == 'a' || s[1] == 'A') &&
5796 (s[2] == 'l' || s[2] == 'L') &&
5797 (s[3] == 's' || s[3] == 'S') &&
5798 (s[4] == 'e' || s[4] == 'E')) {
5799 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5800 if (!canStringCoerce) {
5801 if (accessor != NULL) {
5802 accessor->reportError(accessorCookie, "Boolean types not allowed");
5803 }
5804 return false;
5805 }
5806 } else {
5807 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5808 outValue->data = 0;
5809 return true;
5810 }
5811 }
5812 }
5813
5814 if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
5815 const ssize_t p = getResourcePackageIndex(attrID);
5816 const bag_entry* bag;
5817 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5818 //printf("Got %d for enum\n", cnt);
5819 if (cnt >= 0) {
5820 resource_name rname;
5821 while (cnt > 0) {
5822 if (!Res_INTERNALID(bag->map.name.ident)) {
5823 //printf("Trying attr #%08x\n", bag->map.name.ident);
5824 if (getResourceName(bag->map.name.ident, false, &rname)) {
5825 #if 0
5826 printf("Matching %s against %s (0x%08x)\n",
5827 String8(s, len).string(),
5828 String8(rname.name, rname.nameLen).string(),
5829 bag->map.name.ident);
5830 #endif
5831 if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
5832 outValue->dataType = bag->map.value.dataType;
5833 outValue->data = bag->map.value.data;
5834 unlockBag(bag);
5835 return true;
5836 }
5837 }
5838
5839 }
5840 bag++;
5841 cnt--;
5842 }
5843 unlockBag(bag);
5844 }
5845
5846 if (fromAccessor) {
5847 if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5848 return true;
5849 }
5850 }
5851 }
5852
5853 if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5854 const ssize_t p = getResourcePackageIndex(attrID);
5855 const bag_entry* bag;
5856 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5857 //printf("Got %d for flags\n", cnt);
5858 if (cnt >= 0) {
5859 bool failed = false;
5860 resource_name rname;
5861 outValue->dataType = Res_value::TYPE_INT_HEX;
5862 outValue->data = 0;
5863 const char16_t* end = s + len;
5864 const char16_t* pos = s;
5865 while (pos < end && !failed) {
5866 const char16_t* start = pos;
5867 pos++;
5868 while (pos < end && *pos != '|') {
5869 pos++;
5870 }
5871 //printf("Looking for: %s\n", String8(start, pos-start).string());
5872 const bag_entry* bagi = bag;
5873 ssize_t i;
5874 for (i=0; i<cnt; i++, bagi++) {
5875 if (!Res_INTERNALID(bagi->map.name.ident)) {
5876 //printf("Trying attr #%08x\n", bagi->map.name.ident);
5877 if (getResourceName(bagi->map.name.ident, false, &rname)) {
5878 #if 0
5879 printf("Matching %s against %s (0x%08x)\n",
5880 String8(start,pos-start).string(),
5881 String8(rname.name, rname.nameLen).string(),
5882 bagi->map.name.ident);
5883 #endif
5884 if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5885 outValue->data |= bagi->map.value.data;
5886 break;
5887 }
5888 }
5889 }
5890 }
5891 if (i >= cnt) {
5892 // Didn't find this flag identifier.
5893 failed = true;
5894 }
5895 if (pos < end) {
5896 pos++;
5897 }
5898 }
5899 unlockBag(bag);
5900 if (!failed) {
5901 //printf("Final flag value: 0x%lx\n", outValue->data);
5902 return true;
5903 }
5904 }
5905
5906
5907 if (fromAccessor) {
5908 if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5909 //printf("Final flag value: 0x%lx\n", outValue->data);
5910 return true;
5911 }
5912 }
5913 }
5914
5915 if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5916 if (accessor != NULL) {
5917 accessor->reportError(accessorCookie, "String types not allowed");
5918 }
5919 return false;
5920 }
5921
5922 // Generic string handling...
5923 outValue->dataType = outValue->TYPE_STRING;
5924 if (outString) {
5925 bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5926 if (accessor != NULL) {
5927 accessor->reportError(accessorCookie, errorMsg);
5928 }
5929 return failed;
5930 }
5931
5932 return true;
5933 }
5934
collectString(String16 * outString,const char16_t * s,size_t len,bool preserveSpaces,const char ** outErrorMsg,bool append)5935 bool ResTable::collectString(String16* outString,
5936 const char16_t* s, size_t len,
5937 bool preserveSpaces,
5938 const char** outErrorMsg,
5939 bool append)
5940 {
5941 String16 tmp;
5942
5943 char quoted = 0;
5944 const char16_t* p = s;
5945 while (p < (s+len)) {
5946 while (p < (s+len)) {
5947 const char16_t c = *p;
5948 if (c == '\\') {
5949 break;
5950 }
5951 if (!preserveSpaces) {
5952 if (quoted == 0 && isspace16(c)
5953 && (c != ' ' || isspace16(*(p+1)))) {
5954 break;
5955 }
5956 if (c == '"' && (quoted == 0 || quoted == '"')) {
5957 break;
5958 }
5959 if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5960 /*
5961 * In practice, when people write ' instead of \'
5962 * in a string, they are doing it by accident
5963 * instead of really meaning to use ' as a quoting
5964 * character. Warn them so they don't lose it.
5965 */
5966 if (outErrorMsg) {
5967 *outErrorMsg = "Apostrophe not preceded by \\";
5968 }
5969 return false;
5970 }
5971 }
5972 p++;
5973 }
5974 if (p < (s+len)) {
5975 if (p > s) {
5976 tmp.append(String16(s, p-s));
5977 }
5978 if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5979 if (quoted == 0) {
5980 quoted = *p;
5981 } else {
5982 quoted = 0;
5983 }
5984 p++;
5985 } else if (!preserveSpaces && isspace16(*p)) {
5986 // Space outside of a quote -- consume all spaces and
5987 // leave a single plain space char.
5988 tmp.append(String16(" "));
5989 p++;
5990 while (p < (s+len) && isspace16(*p)) {
5991 p++;
5992 }
5993 } else if (*p == '\\') {
5994 p++;
5995 if (p < (s+len)) {
5996 switch (*p) {
5997 case 't':
5998 tmp.append(String16("\t"));
5999 break;
6000 case 'n':
6001 tmp.append(String16("\n"));
6002 break;
6003 case '#':
6004 tmp.append(String16("#"));
6005 break;
6006 case '@':
6007 tmp.append(String16("@"));
6008 break;
6009 case '?':
6010 tmp.append(String16("?"));
6011 break;
6012 case '"':
6013 tmp.append(String16("\""));
6014 break;
6015 case '\'':
6016 tmp.append(String16("'"));
6017 break;
6018 case '\\':
6019 tmp.append(String16("\\"));
6020 break;
6021 case 'u':
6022 {
6023 char16_t chr = 0;
6024 int i = 0;
6025 while (i < 4 && p[1] != 0) {
6026 p++;
6027 i++;
6028 int c;
6029 if (*p >= '0' && *p <= '9') {
6030 c = *p - '0';
6031 } else if (*p >= 'a' && *p <= 'f') {
6032 c = *p - 'a' + 10;
6033 } else if (*p >= 'A' && *p <= 'F') {
6034 c = *p - 'A' + 10;
6035 } else {
6036 if (outErrorMsg) {
6037 *outErrorMsg = "Bad character in \\u unicode escape sequence";
6038 }
6039 return false;
6040 }
6041 chr = (chr<<4) | c;
6042 }
6043 tmp.append(String16(&chr, 1));
6044 } break;
6045 default:
6046 // ignore unknown escape chars.
6047 break;
6048 }
6049 p++;
6050 }
6051 }
6052 len -= (p-s);
6053 s = p;
6054 }
6055 }
6056
6057 if (tmp.size() != 0) {
6058 if (len > 0) {
6059 tmp.append(String16(s, len));
6060 }
6061 if (append) {
6062 outString->append(tmp);
6063 } else {
6064 outString->setTo(tmp);
6065 }
6066 } else {
6067 if (append) {
6068 outString->append(String16(s, len));
6069 } else {
6070 outString->setTo(s, len);
6071 }
6072 }
6073
6074 return true;
6075 }
6076
getBasePackageCount() const6077 size_t ResTable::getBasePackageCount() const
6078 {
6079 if (mError != NO_ERROR) {
6080 return 0;
6081 }
6082 return mPackageGroups.size();
6083 }
6084
getBasePackageName(size_t idx) const6085 const String16 ResTable::getBasePackageName(size_t idx) const
6086 {
6087 if (mError != NO_ERROR) {
6088 return String16();
6089 }
6090 LOG_FATAL_IF(idx >= mPackageGroups.size(),
6091 "Requested package index %d past package count %d",
6092 (int)idx, (int)mPackageGroups.size());
6093 return mPackageGroups[idx]->name;
6094 }
6095
getBasePackageId(size_t idx) const6096 uint32_t ResTable::getBasePackageId(size_t idx) const
6097 {
6098 if (mError != NO_ERROR) {
6099 return 0;
6100 }
6101 LOG_FATAL_IF(idx >= mPackageGroups.size(),
6102 "Requested package index %d past package count %d",
6103 (int)idx, (int)mPackageGroups.size());
6104 return mPackageGroups[idx]->id;
6105 }
6106
getLastTypeIdForPackage(size_t idx) const6107 uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
6108 {
6109 if (mError != NO_ERROR) {
6110 return 0;
6111 }
6112 LOG_FATAL_IF(idx >= mPackageGroups.size(),
6113 "Requested package index %d past package count %d",
6114 (int)idx, (int)mPackageGroups.size());
6115 const PackageGroup* const group = mPackageGroups[idx];
6116 return group->largestTypeId;
6117 }
6118
getTableCount() const6119 size_t ResTable::getTableCount() const
6120 {
6121 return mHeaders.size();
6122 }
6123
getTableStringBlock(size_t index) const6124 const ResStringPool* ResTable::getTableStringBlock(size_t index) const
6125 {
6126 return &mHeaders[index]->values;
6127 }
6128
getTableCookie(size_t index) const6129 int32_t ResTable::getTableCookie(size_t index) const
6130 {
6131 return mHeaders[index]->cookie;
6132 }
6133
getDynamicRefTableForCookie(int32_t cookie) const6134 const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
6135 {
6136 const size_t N = mPackageGroups.size();
6137 for (size_t i = 0; i < N; i++) {
6138 const PackageGroup* pg = mPackageGroups[i];
6139 size_t M = pg->packages.size();
6140 for (size_t j = 0; j < M; j++) {
6141 if (pg->packages[j]->header->cookie == cookie) {
6142 return &pg->dynamicRefTable;
6143 }
6144 }
6145 }
6146 return NULL;
6147 }
6148
compareResTableConfig(const ResTable_config & a,const ResTable_config & b)6149 static bool compareResTableConfig(const ResTable_config& a, const ResTable_config& b) {
6150 return a.compare(b) < 0;
6151 }
6152
6153 template <typename Func>
forEachConfiguration(bool ignoreMipmap,bool ignoreAndroidPackage,bool includeSystemConfigs,const Func & f) const6154 void ResTable::forEachConfiguration(bool ignoreMipmap, bool ignoreAndroidPackage,
6155 bool includeSystemConfigs, const Func& f) const {
6156 const size_t packageCount = mPackageGroups.size();
6157 const String16 android("android");
6158 for (size_t i = 0; i < packageCount; i++) {
6159 const PackageGroup* packageGroup = mPackageGroups[i];
6160 if (ignoreAndroidPackage && android == packageGroup->name) {
6161 continue;
6162 }
6163 if (!includeSystemConfigs && packageGroup->isSystemAsset) {
6164 continue;
6165 }
6166 const size_t typeCount = packageGroup->types.size();
6167 for (size_t j = 0; j < typeCount; j++) {
6168 const TypeList& typeList = packageGroup->types[j];
6169 const size_t numTypes = typeList.size();
6170 for (size_t k = 0; k < numTypes; k++) {
6171 const Type* type = typeList[k];
6172 const ResStringPool& typeStrings = type->package->typeStrings;
6173 if (ignoreMipmap && typeStrings.string8ObjectAt(
6174 type->typeSpec->id - 1) == "mipmap") {
6175 continue;
6176 }
6177
6178 const size_t numConfigs = type->configs.size();
6179 for (size_t m = 0; m < numConfigs; m++) {
6180 const ResTable_type* config = type->configs[m];
6181 ResTable_config cfg;
6182 memset(&cfg, 0, sizeof(ResTable_config));
6183 cfg.copyFromDtoH(config->config);
6184
6185 f(cfg);
6186 }
6187 }
6188 }
6189 }
6190 }
6191
getConfigurations(Vector<ResTable_config> * configs,bool ignoreMipmap,bool ignoreAndroidPackage,bool includeSystemConfigs) const6192 void ResTable::getConfigurations(Vector<ResTable_config>* configs, bool ignoreMipmap,
6193 bool ignoreAndroidPackage, bool includeSystemConfigs) const {
6194 auto func = [&](const ResTable_config& cfg) {
6195 const auto beginIter = configs->begin();
6196 const auto endIter = configs->end();
6197
6198 auto iter = std::lower_bound(beginIter, endIter, cfg, compareResTableConfig);
6199 if (iter == endIter || iter->compare(cfg) != 0) {
6200 configs->insertAt(cfg, std::distance(beginIter, iter));
6201 }
6202 };
6203 forEachConfiguration(ignoreMipmap, ignoreAndroidPackage, includeSystemConfigs, func);
6204 }
6205
compareString8AndCString(const String8 & str,const char * cStr)6206 static bool compareString8AndCString(const String8& str, const char* cStr) {
6207 return strcmp(str.string(), cStr) < 0;
6208 }
6209
getLocales(Vector<String8> * locales,bool includeSystemLocales,bool mergeEquivalentLangs) const6210 void ResTable::getLocales(Vector<String8>* locales, bool includeSystemLocales,
6211 bool mergeEquivalentLangs) const {
6212 char locale[RESTABLE_MAX_LOCALE_LEN];
6213
6214 forEachConfiguration(false, false, includeSystemLocales, [&](const ResTable_config& cfg) {
6215 cfg.getBcp47Locale(locale, mergeEquivalentLangs /* canonicalize if merging */);
6216
6217 const auto beginIter = locales->begin();
6218 const auto endIter = locales->end();
6219
6220 auto iter = std::lower_bound(beginIter, endIter, locale, compareString8AndCString);
6221 if (iter == endIter || strcmp(iter->string(), locale) != 0) {
6222 locales->insertAt(String8(locale), std::distance(beginIter, iter));
6223 }
6224 });
6225 }
6226
StringPoolRef(const ResStringPool * pool,uint32_t index)6227 StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
6228 : mPool(pool), mIndex(index) {}
6229
string8(size_t * outLen) const6230 const char* StringPoolRef::string8(size_t* outLen) const {
6231 if (mPool != NULL) {
6232 return mPool->string8At(mIndex, outLen);
6233 }
6234 if (outLen != NULL) {
6235 *outLen = 0;
6236 }
6237 return NULL;
6238 }
6239
string16(size_t * outLen) const6240 const char16_t* StringPoolRef::string16(size_t* outLen) const {
6241 if (mPool != NULL) {
6242 return mPool->stringAt(mIndex, outLen);
6243 }
6244 if (outLen != NULL) {
6245 *outLen = 0;
6246 }
6247 return NULL;
6248 }
6249
getResourceFlags(uint32_t resID,uint32_t * outFlags) const6250 bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
6251 if (mError != NO_ERROR) {
6252 return false;
6253 }
6254
6255 const ssize_t p = getResourcePackageIndex(resID);
6256 const int t = Res_GETTYPE(resID);
6257 const int e = Res_GETENTRY(resID);
6258
6259 if (p < 0) {
6260 if (Res_GETPACKAGE(resID)+1 == 0) {
6261 ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
6262 } else {
6263 ALOGW("No known package when getting flags for resource number 0x%08x", resID);
6264 }
6265 return false;
6266 }
6267 if (t < 0) {
6268 ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
6269 return false;
6270 }
6271
6272 const PackageGroup* const grp = mPackageGroups[p];
6273 if (grp == NULL) {
6274 ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
6275 return false;
6276 }
6277
6278 Entry entry;
6279 status_t err = getEntry(grp, t, e, NULL, &entry);
6280 if (err != NO_ERROR) {
6281 return false;
6282 }
6283
6284 *outFlags = entry.specFlags;
6285 return true;
6286 }
6287
isPackageDynamic(uint8_t packageID) const6288 bool ResTable::isPackageDynamic(uint8_t packageID) const {
6289 if (mError != NO_ERROR) {
6290 return false;
6291 }
6292 if (packageID == 0) {
6293 ALOGW("Invalid package number 0x%08x", packageID);
6294 return false;
6295 }
6296
6297 const ssize_t p = getResourcePackageIndexFromPackage(packageID);
6298
6299 if (p < 0) {
6300 ALOGW("Unknown package number 0x%08x", packageID);
6301 return false;
6302 }
6303
6304 const PackageGroup* const grp = mPackageGroups[p];
6305 if (grp == NULL) {
6306 ALOGW("Bad identifier for package number 0x%08x", packageID);
6307 return false;
6308 }
6309
6310 return grp->isDynamic;
6311 }
6312
isResourceDynamic(uint32_t resID) const6313 bool ResTable::isResourceDynamic(uint32_t resID) const {
6314 if (mError != NO_ERROR) {
6315 return false;
6316 }
6317
6318 const ssize_t p = getResourcePackageIndex(resID);
6319 const int t = Res_GETTYPE(resID);
6320 const int e = Res_GETENTRY(resID);
6321
6322 if (p < 0) {
6323 if (Res_GETPACKAGE(resID)+1 == 0) {
6324 ALOGW("No package identifier for resource number 0x%08x", resID);
6325 } else {
6326 ALOGW("No known package for resource number 0x%08x", resID);
6327 }
6328 return false;
6329 }
6330 if (t < 0) {
6331 ALOGW("No type identifier for resource number 0x%08x", resID);
6332 return false;
6333 }
6334
6335 const PackageGroup* const grp = mPackageGroups[p];
6336 if (grp == NULL) {
6337 ALOGW("Bad identifier for resource number 0x%08x", resID);
6338 return false;
6339 }
6340
6341 Entry entry;
6342 status_t err = getEntry(grp, t, e, NULL, &entry);
6343 if (err != NO_ERROR) {
6344 return false;
6345 }
6346
6347 return grp->isDynamic;
6348 }
6349
keyCompare(const ResTable_sparseTypeEntry & entry,uint16_t entryIdx)6350 static bool keyCompare(const ResTable_sparseTypeEntry& entry , uint16_t entryIdx) {
6351 return dtohs(entry.idx) < entryIdx;
6352 }
6353
getEntry(const PackageGroup * packageGroup,int typeIndex,int entryIndex,const ResTable_config * config,Entry * outEntry) const6354 status_t ResTable::getEntry(
6355 const PackageGroup* packageGroup, int typeIndex, int entryIndex,
6356 const ResTable_config* config,
6357 Entry* outEntry) const
6358 {
6359 const TypeList& typeList = packageGroup->types[typeIndex];
6360 if (typeList.isEmpty()) {
6361 ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
6362 return BAD_TYPE;
6363 }
6364
6365 const ResTable_type* bestType = NULL;
6366 uint32_t bestOffset = ResTable_type::NO_ENTRY;
6367 const Package* bestPackage = NULL;
6368 uint32_t specFlags = 0;
6369 uint8_t actualTypeIndex = typeIndex;
6370 ResTable_config bestConfig;
6371 memset(&bestConfig, 0, sizeof(bestConfig));
6372
6373 // Iterate over the Types of each package.
6374 const size_t typeCount = typeList.size();
6375 for (size_t i = 0; i < typeCount; i++) {
6376 const Type* const typeSpec = typeList[i];
6377
6378 int realEntryIndex = entryIndex;
6379 int realTypeIndex = typeIndex;
6380 bool currentTypeIsOverlay = false;
6381
6382 // Runtime overlay packages provide a mapping of app resource
6383 // ID to package resource ID.
6384 if (typeSpec->idmapEntries.hasEntries()) {
6385 uint16_t overlayEntryIndex;
6386 if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
6387 // No such mapping exists
6388 continue;
6389 }
6390 realEntryIndex = overlayEntryIndex;
6391 realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
6392 currentTypeIsOverlay = true;
6393 }
6394
6395 // Check that the entry idx is within range of the declared entry count (ResTable_typeSpec).
6396 // Particular types (ResTable_type) may be encoded with sparse entries, and so their
6397 // entryCount do not need to match.
6398 if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
6399 ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
6400 Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
6401 entryIndex, static_cast<int>(typeSpec->entryCount));
6402 // We should normally abort here, but some legacy apps declare
6403 // resources in the 'android' package (old bug in AAPT).
6404 continue;
6405 }
6406
6407 // Aggregate all the flags for each package that defines this entry.
6408 if (typeSpec->typeSpecFlags != NULL) {
6409 specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
6410 } else {
6411 specFlags = -1;
6412 }
6413
6414 const Vector<const ResTable_type*>* candidateConfigs = &typeSpec->configs;
6415
6416 std::shared_ptr<Vector<const ResTable_type*>> filteredConfigs;
6417 if (config && memcmp(&mParams, config, sizeof(mParams)) == 0) {
6418 // Grab the lock first so we can safely get the current filtered list.
6419 AutoMutex _lock(mFilteredConfigLock);
6420
6421 // This configuration is equal to the one we have previously cached for,
6422 // so use the filtered configs.
6423
6424 const TypeCacheEntry& cacheEntry = packageGroup->typeCacheEntries[typeIndex];
6425 if (i < cacheEntry.filteredConfigs.size()) {
6426 if (cacheEntry.filteredConfigs[i]) {
6427 // Grab a reference to the shared_ptr so it doesn't get destroyed while
6428 // going through this list.
6429 filteredConfigs = cacheEntry.filteredConfigs[i];
6430
6431 // Use this filtered list.
6432 candidateConfigs = filteredConfigs.get();
6433 }
6434 }
6435 }
6436
6437 const size_t numConfigs = candidateConfigs->size();
6438 for (size_t c = 0; c < numConfigs; c++) {
6439 const ResTable_type* const thisType = candidateConfigs->itemAt(c);
6440 if (thisType == NULL) {
6441 continue;
6442 }
6443
6444 ResTable_config thisConfig;
6445 thisConfig.copyFromDtoH(thisType->config);
6446
6447 // Check to make sure this one is valid for the current parameters.
6448 if (config != NULL && !thisConfig.match(*config)) {
6449 continue;
6450 }
6451
6452 const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
6453 reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
6454
6455 uint32_t thisOffset;
6456
6457 // Check if there is the desired entry in this type.
6458 if (thisType->flags & ResTable_type::FLAG_SPARSE) {
6459 // This is encoded as a sparse map, so perform a binary search.
6460 const ResTable_sparseTypeEntry* sparseIndices =
6461 reinterpret_cast<const ResTable_sparseTypeEntry*>(eindex);
6462 const ResTable_sparseTypeEntry* result = std::lower_bound(
6463 sparseIndices, sparseIndices + dtohl(thisType->entryCount), realEntryIndex,
6464 keyCompare);
6465 if (result == sparseIndices + dtohl(thisType->entryCount)
6466 || dtohs(result->idx) != realEntryIndex) {
6467 // No entry found.
6468 continue;
6469 }
6470
6471 // Extract the offset from the entry. Each offset must be a multiple of 4
6472 // so we store it as the real offset divided by 4.
6473 thisOffset = dtohs(result->offset) * 4u;
6474 } else {
6475 if (static_cast<uint32_t>(realEntryIndex) >= dtohl(thisType->entryCount)) {
6476 // Entry does not exist.
6477 continue;
6478 }
6479
6480 thisOffset = dtohl(eindex[realEntryIndex]);
6481 }
6482
6483 if (thisOffset == ResTable_type::NO_ENTRY) {
6484 // There is no entry for this index and configuration.
6485 continue;
6486 }
6487
6488 if (bestType != NULL) {
6489 // Check if this one is less specific than the last found. If so,
6490 // we will skip it. We check starting with things we most care
6491 // about to those we least care about.
6492 if (!thisConfig.isBetterThan(bestConfig, config)) {
6493 if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
6494 continue;
6495 }
6496 }
6497 }
6498
6499 bestType = thisType;
6500 bestOffset = thisOffset;
6501 bestConfig = thisConfig;
6502 bestPackage = typeSpec->package;
6503 actualTypeIndex = realTypeIndex;
6504
6505 // If no config was specified, any type will do, so skip
6506 if (config == NULL) {
6507 break;
6508 }
6509 }
6510 }
6511
6512 if (bestType == NULL) {
6513 return BAD_INDEX;
6514 }
6515
6516 bestOffset += dtohl(bestType->entriesStart);
6517
6518 if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
6519 ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
6520 bestOffset, dtohl(bestType->header.size));
6521 return BAD_TYPE;
6522 }
6523 if ((bestOffset & 0x3) != 0) {
6524 ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
6525 return BAD_TYPE;
6526 }
6527
6528 const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
6529 reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
6530 if (dtohs(entry->size) < sizeof(*entry)) {
6531 ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
6532 return BAD_TYPE;
6533 }
6534
6535 if (outEntry != NULL) {
6536 outEntry->entry = entry;
6537 outEntry->config = bestConfig;
6538 outEntry->type = bestType;
6539 outEntry->specFlags = specFlags;
6540 outEntry->package = bestPackage;
6541 outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
6542 outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
6543 }
6544 return NO_ERROR;
6545 }
6546
parsePackage(const ResTable_package * const pkg,const Header * const header,bool appAsLib,bool isSystemAsset)6547 status_t ResTable::parsePackage(const ResTable_package* const pkg,
6548 const Header* const header, bool appAsLib, bool isSystemAsset)
6549 {
6550 const uint8_t* base = (const uint8_t*)pkg;
6551 status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
6552 header->dataEnd, "ResTable_package");
6553 if (err != NO_ERROR) {
6554 return (mError=err);
6555 }
6556
6557 const uint32_t pkgSize = dtohl(pkg->header.size);
6558
6559 if (dtohl(pkg->typeStrings) >= pkgSize) {
6560 ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
6561 dtohl(pkg->typeStrings), pkgSize);
6562 return (mError=BAD_TYPE);
6563 }
6564 if ((dtohl(pkg->typeStrings)&0x3) != 0) {
6565 ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
6566 dtohl(pkg->typeStrings));
6567 return (mError=BAD_TYPE);
6568 }
6569 if (dtohl(pkg->keyStrings) >= pkgSize) {
6570 ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
6571 dtohl(pkg->keyStrings), pkgSize);
6572 return (mError=BAD_TYPE);
6573 }
6574 if ((dtohl(pkg->keyStrings)&0x3) != 0) {
6575 ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
6576 dtohl(pkg->keyStrings));
6577 return (mError=BAD_TYPE);
6578 }
6579
6580 uint32_t id = dtohl(pkg->id);
6581 KeyedVector<uint8_t, IdmapEntries> idmapEntries;
6582
6583 if (header->resourceIDMap != NULL) {
6584 uint8_t targetPackageId = 0;
6585 status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
6586 if (err != NO_ERROR) {
6587 ALOGW("Overlay is broken");
6588 return (mError=err);
6589 }
6590 id = targetPackageId;
6591 }
6592
6593 bool isDynamic = false;
6594 if (id >= 256) {
6595 LOG_ALWAYS_FATAL("Package id out of range");
6596 return NO_ERROR;
6597 } else if (id == 0 || (id == 0x7f && appAsLib) || isSystemAsset) {
6598 // This is a library or a system asset, so assign an ID
6599 id = mNextPackageId++;
6600 isDynamic = true;
6601 }
6602
6603 PackageGroup* group = NULL;
6604 Package* package = new Package(this, header, pkg);
6605 if (package == NULL) {
6606 return (mError=NO_MEMORY);
6607 }
6608
6609 err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
6610 header->dataEnd-(base+dtohl(pkg->typeStrings)));
6611 if (err != NO_ERROR) {
6612 delete group;
6613 delete package;
6614 return (mError=err);
6615 }
6616
6617 err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
6618 header->dataEnd-(base+dtohl(pkg->keyStrings)));
6619 if (err != NO_ERROR) {
6620 delete group;
6621 delete package;
6622 return (mError=err);
6623 }
6624
6625 size_t idx = mPackageMap[id];
6626 if (idx == 0) {
6627 idx = mPackageGroups.size() + 1;
6628 char16_t tmpName[sizeof(pkg->name)/sizeof(pkg->name[0])];
6629 strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(pkg->name[0]));
6630 group = new PackageGroup(this, String16(tmpName), id, appAsLib, isSystemAsset, isDynamic);
6631 if (group == NULL) {
6632 delete package;
6633 return (mError=NO_MEMORY);
6634 }
6635
6636 err = mPackageGroups.add(group);
6637 if (err < NO_ERROR) {
6638 return (mError=err);
6639 }
6640
6641 mPackageMap[id] = static_cast<uint8_t>(idx);
6642
6643 // Find all packages that reference this package
6644 size_t N = mPackageGroups.size();
6645 for (size_t i = 0; i < N; i++) {
6646 mPackageGroups[i]->dynamicRefTable.addMapping(
6647 group->name, static_cast<uint8_t>(group->id));
6648 }
6649 } else {
6650 group = mPackageGroups.itemAt(idx - 1);
6651 if (group == NULL) {
6652 return (mError=UNKNOWN_ERROR);
6653 }
6654 }
6655
6656 err = group->packages.add(package);
6657 if (err < NO_ERROR) {
6658 return (mError=err);
6659 }
6660
6661 // Iterate through all chunks.
6662 const ResChunk_header* chunk =
6663 (const ResChunk_header*)(((const uint8_t*)pkg)
6664 + dtohs(pkg->header.headerSize));
6665 const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
6666 while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
6667 ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
6668 if (kDebugTableNoisy) {
6669 ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
6670 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
6671 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
6672 }
6673 const size_t csize = dtohl(chunk->size);
6674 const uint16_t ctype = dtohs(chunk->type);
6675 if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
6676 const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
6677 err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
6678 endPos, "ResTable_typeSpec");
6679 if (err != NO_ERROR) {
6680 return (mError=err);
6681 }
6682
6683 const size_t typeSpecSize = dtohl(typeSpec->header.size);
6684 const size_t newEntryCount = dtohl(typeSpec->entryCount);
6685
6686 if (kDebugLoadTableNoisy) {
6687 ALOGI("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
6688 (void*)(base-(const uint8_t*)chunk),
6689 dtohs(typeSpec->header.type),
6690 dtohs(typeSpec->header.headerSize),
6691 (void*)typeSpecSize);
6692 }
6693 // look for block overrun or int overflow when multiplying by 4
6694 if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
6695 || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
6696 > typeSpecSize)) {
6697 ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
6698 (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6699 (void*)typeSpecSize);
6700 return (mError=BAD_TYPE);
6701 }
6702
6703 if (typeSpec->id == 0) {
6704 ALOGW("ResTable_type has an id of 0.");
6705 return (mError=BAD_TYPE);
6706 }
6707
6708 if (newEntryCount > 0) {
6709 bool addToType = true;
6710 uint8_t typeIndex = typeSpec->id - 1;
6711 ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
6712 if (idmapIndex >= 0) {
6713 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6714 } else if (header->resourceIDMap != NULL) {
6715 // This is an overlay, but the types in this overlay are not
6716 // overlaying anything according to the idmap. We can skip these
6717 // as they will otherwise conflict with the other resources in the package
6718 // without a mapping.
6719 addToType = false;
6720 }
6721
6722 if (addToType) {
6723 TypeList& typeList = group->types.editItemAt(typeIndex);
6724 if (!typeList.isEmpty()) {
6725 const Type* existingType = typeList[0];
6726 if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
6727 ALOGW("ResTable_typeSpec entry count inconsistent: "
6728 "given %d, previously %d",
6729 (int) newEntryCount, (int) existingType->entryCount);
6730 // We should normally abort here, but some legacy apps declare
6731 // resources in the 'android' package (old bug in AAPT).
6732 }
6733 }
6734
6735 Type* t = new Type(header, package, newEntryCount);
6736 t->typeSpec = typeSpec;
6737 t->typeSpecFlags = (const uint32_t*)(
6738 ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
6739 if (idmapIndex >= 0) {
6740 t->idmapEntries = idmapEntries[idmapIndex];
6741 }
6742 typeList.add(t);
6743 group->largestTypeId = max(group->largestTypeId, typeSpec->id);
6744 }
6745 } else {
6746 ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
6747 }
6748
6749 } else if (ctype == RES_TABLE_TYPE_TYPE) {
6750 const ResTable_type* type = (const ResTable_type*)(chunk);
6751 err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
6752 endPos, "ResTable_type");
6753 if (err != NO_ERROR) {
6754 return (mError=err);
6755 }
6756
6757 const uint32_t typeSize = dtohl(type->header.size);
6758 const size_t newEntryCount = dtohl(type->entryCount);
6759
6760 if (kDebugLoadTableNoisy) {
6761 printf("Type off %p: type=0x%x, headerSize=0x%x, size=%u\n",
6762 (void*)(base-(const uint8_t*)chunk),
6763 dtohs(type->header.type),
6764 dtohs(type->header.headerSize),
6765 typeSize);
6766 }
6767 if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount) > typeSize) {
6768 ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
6769 (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6770 typeSize);
6771 return (mError=BAD_TYPE);
6772 }
6773
6774 if (newEntryCount != 0
6775 && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
6776 ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
6777 dtohl(type->entriesStart), typeSize);
6778 return (mError=BAD_TYPE);
6779 }
6780
6781 if (type->id == 0) {
6782 ALOGW("ResTable_type has an id of 0.");
6783 return (mError=BAD_TYPE);
6784 }
6785
6786 if (newEntryCount > 0) {
6787 bool addToType = true;
6788 uint8_t typeIndex = type->id - 1;
6789 ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
6790 if (idmapIndex >= 0) {
6791 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6792 } else if (header->resourceIDMap != NULL) {
6793 // This is an overlay, but the types in this overlay are not
6794 // overlaying anything according to the idmap. We can skip these
6795 // as they will otherwise conflict with the other resources in the package
6796 // without a mapping.
6797 addToType = false;
6798 }
6799
6800 if (addToType) {
6801 TypeList& typeList = group->types.editItemAt(typeIndex);
6802 if (typeList.isEmpty()) {
6803 ALOGE("No TypeSpec for type %d", type->id);
6804 return (mError=BAD_TYPE);
6805 }
6806
6807 Type* t = typeList.editItemAt(typeList.size() - 1);
6808 if (t->package != package) {
6809 ALOGE("No TypeSpec for type %d", type->id);
6810 return (mError=BAD_TYPE);
6811 }
6812
6813 t->configs.add(type);
6814
6815 if (kDebugTableGetEntry) {
6816 ResTable_config thisConfig;
6817 thisConfig.copyFromDtoH(type->config);
6818 ALOGI("Adding config to type %d: %s\n", type->id,
6819 thisConfig.toString().string());
6820 }
6821 }
6822 } else {
6823 ALOGV("Skipping empty ResTable_type for type %d", type->id);
6824 }
6825
6826 } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
6827
6828 if (group->dynamicRefTable.entries().size() == 0) {
6829 const ResTable_lib_header* lib = (const ResTable_lib_header*) chunk;
6830 status_t err = validate_chunk(&lib->header, sizeof(*lib),
6831 endPos, "ResTable_lib_header");
6832 if (err != NO_ERROR) {
6833 return (mError=err);
6834 }
6835
6836 err = group->dynamicRefTable.load(lib);
6837 if (err != NO_ERROR) {
6838 return (mError=err);
6839 }
6840
6841 // Fill in the reference table with the entries we already know about.
6842 size_t N = mPackageGroups.size();
6843 for (size_t i = 0; i < N; i++) {
6844 group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
6845 }
6846 } else {
6847 ALOGW("Found multiple library tables, ignoring...");
6848 }
6849 } else {
6850 status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
6851 endPos, "ResTable_package:unknown");
6852 if (err != NO_ERROR) {
6853 return (mError=err);
6854 }
6855 }
6856 chunk = (const ResChunk_header*)
6857 (((const uint8_t*)chunk) + csize);
6858 }
6859
6860 return NO_ERROR;
6861 }
6862
DynamicRefTable()6863 DynamicRefTable::DynamicRefTable() : DynamicRefTable(0, false) {}
6864
DynamicRefTable(uint8_t packageId,bool appAsLib)6865 DynamicRefTable::DynamicRefTable(uint8_t packageId, bool appAsLib)
6866 : mAssignedPackageId(packageId)
6867 , mAppAsLib(appAsLib)
6868 {
6869 memset(mLookupTable, 0, sizeof(mLookupTable));
6870
6871 // Reserved package ids
6872 mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
6873 mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
6874 }
6875
clone() const6876 std::unique_ptr<DynamicRefTable> DynamicRefTable::clone() const {
6877 std::unique_ptr<DynamicRefTable> clone = std::unique_ptr<DynamicRefTable>(
6878 new DynamicRefTable(mAssignedPackageId, mAppAsLib));
6879 clone->addMappings(*this);
6880 return clone;
6881 }
6882
load(const ResTable_lib_header * const header)6883 status_t DynamicRefTable::load(const ResTable_lib_header* const header)
6884 {
6885 const uint32_t entryCount = dtohl(header->count);
6886 const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
6887 const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
6888 if (sizeOfEntries > expectedSize) {
6889 ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
6890 expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
6891 return UNKNOWN_ERROR;
6892 }
6893
6894 const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
6895 dtohl(header->header.headerSize));
6896 for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
6897 uint32_t packageId = dtohl(entry->packageId);
6898 char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
6899 strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
6900 if (kDebugLibNoisy) {
6901 ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
6902 dtohl(entry->packageId));
6903 }
6904 if (packageId >= 256) {
6905 ALOGE("Bad package id 0x%08x", packageId);
6906 return UNKNOWN_ERROR;
6907 }
6908 mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
6909 entry = entry + 1;
6910 }
6911 return NO_ERROR;
6912 }
6913
addMappings(const DynamicRefTable & other)6914 status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
6915 if (mAssignedPackageId != other.mAssignedPackageId) {
6916 return UNKNOWN_ERROR;
6917 }
6918
6919 const size_t entryCount = other.mEntries.size();
6920 for (size_t i = 0; i < entryCount; i++) {
6921 ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
6922 if (index < 0) {
6923 mEntries.add(String16(other.mEntries.keyAt(i)), other.mEntries[i]);
6924 } else {
6925 if (other.mEntries[i] != mEntries[index]) {
6926 return UNKNOWN_ERROR;
6927 }
6928 }
6929 }
6930
6931 // Merge the lookup table. No entry can conflict
6932 // (value of 0 means not set).
6933 for (size_t i = 0; i < 256; i++) {
6934 if (mLookupTable[i] != other.mLookupTable[i]) {
6935 if (mLookupTable[i] == 0) {
6936 mLookupTable[i] = other.mLookupTable[i];
6937 } else if (other.mLookupTable[i] != 0) {
6938 return UNKNOWN_ERROR;
6939 }
6940 }
6941 }
6942 return NO_ERROR;
6943 }
6944
addMapping(const String16 & packageName,uint8_t packageId)6945 status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
6946 {
6947 ssize_t index = mEntries.indexOfKey(packageName);
6948 if (index < 0) {
6949 return UNKNOWN_ERROR;
6950 }
6951 mLookupTable[mEntries.valueAt(index)] = packageId;
6952 return NO_ERROR;
6953 }
6954
addMapping(uint8_t buildPackageId,uint8_t runtimePackageId)6955 void DynamicRefTable::addMapping(uint8_t buildPackageId, uint8_t runtimePackageId) {
6956 mLookupTable[buildPackageId] = runtimePackageId;
6957 }
6958
lookupResourceId(uint32_t * resId) const6959 status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
6960 uint32_t res = *resId;
6961 size_t packageId = Res_GETPACKAGE(res) + 1;
6962
6963 if (packageId == APP_PACKAGE_ID && !mAppAsLib) {
6964 // No lookup needs to be done, app package IDs are absolute.
6965 return NO_ERROR;
6966 }
6967
6968 if (packageId == 0 || (packageId == APP_PACKAGE_ID && mAppAsLib)) {
6969 // The package ID is 0x00. That means that a shared library is accessing
6970 // its own local resource.
6971 // Or if app resource is loaded as shared library, the resource which has
6972 // app package Id is local resources.
6973 // so we fix up those resources with the calling package ID.
6974 *resId = (0xFFFFFF & (*resId)) | (((uint32_t) mAssignedPackageId) << 24);
6975 return NO_ERROR;
6976 }
6977
6978 // Do a proper lookup.
6979 uint8_t translatedId = mLookupTable[packageId];
6980 if (translatedId == 0) {
6981 ALOGW("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
6982 (uint8_t)mAssignedPackageId, (uint8_t)packageId);
6983 for (size_t i = 0; i < 256; i++) {
6984 if (mLookupTable[i] != 0) {
6985 ALOGW("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
6986 }
6987 }
6988 return UNKNOWN_ERROR;
6989 }
6990
6991 *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
6992 return NO_ERROR;
6993 }
6994
lookupResourceValue(Res_value * value) const6995 status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
6996 uint8_t resolvedType = Res_value::TYPE_REFERENCE;
6997 switch (value->dataType) {
6998 case Res_value::TYPE_ATTRIBUTE:
6999 resolvedType = Res_value::TYPE_ATTRIBUTE;
7000 // fallthrough
7001 case Res_value::TYPE_REFERENCE:
7002 if (!mAppAsLib) {
7003 return NO_ERROR;
7004 }
7005
7006 // If the package is loaded as shared library, the resource reference
7007 // also need to be fixed.
7008 break;
7009 case Res_value::TYPE_DYNAMIC_ATTRIBUTE:
7010 resolvedType = Res_value::TYPE_ATTRIBUTE;
7011 // fallthrough
7012 case Res_value::TYPE_DYNAMIC_REFERENCE:
7013 break;
7014 default:
7015 return NO_ERROR;
7016 }
7017
7018 status_t err = lookupResourceId(&value->data);
7019 if (err != NO_ERROR) {
7020 return err;
7021 }
7022
7023 value->dataType = resolvedType;
7024 return NO_ERROR;
7025 }
7026
7027 struct IdmapTypeMap {
7028 ssize_t overlayTypeId;
7029 size_t entryOffset;
7030 Vector<uint32_t> entryMap;
7031 };
7032
createIdmap(const ResTable & overlay,uint32_t targetCrc,uint32_t overlayCrc,const char * targetPath,const char * overlayPath,void ** outData,size_t * outSize) const7033 status_t ResTable::createIdmap(const ResTable& overlay,
7034 uint32_t targetCrc, uint32_t overlayCrc,
7035 const char* targetPath, const char* overlayPath,
7036 void** outData, size_t* outSize) const
7037 {
7038 // see README for details on the format of map
7039 if (mPackageGroups.size() == 0) {
7040 ALOGW("idmap: target package has no package groups, cannot create idmap\n");
7041 return UNKNOWN_ERROR;
7042 }
7043
7044 if (mPackageGroups[0]->packages.size() == 0) {
7045 ALOGW("idmap: target package has no packages in its first package group, "
7046 "cannot create idmap\n");
7047 return UNKNOWN_ERROR;
7048 }
7049
7050 // The number of resources overlaid that were not explicitly marked overlayable.
7051 size_t forcedOverlayCount = 0u;
7052
7053 KeyedVector<uint8_t, IdmapTypeMap> map;
7054
7055 // overlaid packages are assumed to contain only one package group
7056 const PackageGroup* pg = mPackageGroups[0];
7057
7058 // starting size is header
7059 *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
7060
7061 // target package id and number of types in map
7062 *outSize += 2 * sizeof(uint16_t);
7063
7064 // overlay packages are assumed to contain only one package group
7065 const ResTable_package* overlayPackageStruct = overlay.mPackageGroups[0]->packages[0]->package;
7066 char16_t tmpName[sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0])];
7067 strcpy16_dtoh(tmpName, overlayPackageStruct->name, sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0]));
7068 const String16 overlayPackage(tmpName);
7069
7070 for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
7071 const TypeList& typeList = pg->types[typeIndex];
7072 if (typeList.isEmpty()) {
7073 continue;
7074 }
7075
7076 const Type* typeConfigs = typeList[0];
7077
7078 IdmapTypeMap typeMap;
7079 typeMap.overlayTypeId = -1;
7080 typeMap.entryOffset = 0;
7081
7082 for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
7083 uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
7084 resource_name resName;
7085 if (!this->getResourceName(resID, false, &resName)) {
7086 if (typeMap.entryMap.isEmpty()) {
7087 typeMap.entryOffset++;
7088 }
7089 continue;
7090 }
7091
7092 uint32_t typeSpecFlags = 0u;
7093 const String16 overlayType(resName.type, resName.typeLen);
7094 const String16 overlayName(resName.name, resName.nameLen);
7095 uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
7096 overlayName.size(),
7097 overlayType.string(),
7098 overlayType.size(),
7099 overlayPackage.string(),
7100 overlayPackage.size(),
7101 &typeSpecFlags);
7102 if (overlayResID == 0) {
7103 // No such target resource was found.
7104 if (typeMap.entryMap.isEmpty()) {
7105 typeMap.entryOffset++;
7106 }
7107 continue;
7108 }
7109
7110 // Now that we know this is being overlaid, check if it can be, and emit a warning if
7111 // it can't.
7112 if ((dtohl(typeConfigs->typeSpecFlags[entryIndex]) &
7113 ResTable_typeSpec::SPEC_OVERLAYABLE) == 0) {
7114 forcedOverlayCount++;
7115 }
7116
7117 if (typeMap.overlayTypeId == -1) {
7118 typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
7119 }
7120
7121 if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
7122 ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
7123 " but entries should map to resources of type %02zx",
7124 resID, overlayResID, typeMap.overlayTypeId);
7125 return BAD_TYPE;
7126 }
7127
7128 if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
7129 // pad with 0xffffffff's (indicating non-existing entries) before adding this entry
7130 size_t index = typeMap.entryMap.size();
7131 size_t numItems = entryIndex - (typeMap.entryOffset + index);
7132 if (typeMap.entryMap.insertAt(0xffffffff, index, numItems) < 0) {
7133 return NO_MEMORY;
7134 }
7135 }
7136 typeMap.entryMap.add(Res_GETENTRY(overlayResID));
7137 }
7138
7139 if (!typeMap.entryMap.isEmpty()) {
7140 if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
7141 return NO_MEMORY;
7142 }
7143 *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
7144 }
7145 }
7146
7147 if (map.isEmpty()) {
7148 ALOGW("idmap: no resources in overlay package present in base package");
7149 return UNKNOWN_ERROR;
7150 }
7151
7152 if ((*outData = malloc(*outSize)) == NULL) {
7153 return NO_MEMORY;
7154 }
7155
7156 uint32_t* data = (uint32_t*)*outData;
7157 *data++ = htodl(IDMAP_MAGIC);
7158 *data++ = htodl(ResTable::IDMAP_CURRENT_VERSION);
7159 *data++ = htodl(targetCrc);
7160 *data++ = htodl(overlayCrc);
7161 const char* paths[] = { targetPath, overlayPath };
7162 for (int j = 0; j < 2; ++j) {
7163 char* p = (char*)data;
7164 const char* path = paths[j];
7165 const size_t I = strlen(path);
7166 if (I > 255) {
7167 ALOGV("path exceeds expected 255 characters: %s\n", path);
7168 return UNKNOWN_ERROR;
7169 }
7170 for (size_t i = 0; i < 256; ++i) {
7171 *p++ = i < I ? path[i] : '\0';
7172 }
7173 data += 256 / sizeof(uint32_t);
7174 }
7175 const size_t mapSize = map.size();
7176 uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
7177 *typeData++ = htods(pg->id);
7178 *typeData++ = htods(mapSize);
7179 for (size_t i = 0; i < mapSize; ++i) {
7180 uint8_t targetTypeId = map.keyAt(i);
7181 const IdmapTypeMap& typeMap = map[i];
7182 *typeData++ = htods(targetTypeId + 1);
7183 *typeData++ = htods(typeMap.overlayTypeId);
7184 *typeData++ = htods(typeMap.entryMap.size());
7185 *typeData++ = htods(typeMap.entryOffset);
7186
7187 const size_t entryCount = typeMap.entryMap.size();
7188 uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
7189 for (size_t j = 0; j < entryCount; j++) {
7190 entries[j] = htodl(typeMap.entryMap[j]);
7191 }
7192 typeData += entryCount * 2;
7193 }
7194
7195 if (forcedOverlayCount > 0) {
7196 ALOGW("idmap: overlaid %zu resources not marked overlayable", forcedOverlayCount);
7197 }
7198
7199 return NO_ERROR;
7200 }
7201
getIdmapInfo(const void * idmap,size_t sizeBytes,uint32_t * pVersion,uint32_t * pTargetCrc,uint32_t * pOverlayCrc,String8 * pTargetPath,String8 * pOverlayPath)7202 bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
7203 uint32_t* pVersion,
7204 uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
7205 String8* pTargetPath, String8* pOverlayPath)
7206 {
7207 const uint32_t* map = (const uint32_t*)idmap;
7208 if (!assertIdmapHeader(map, sizeBytes)) {
7209 return false;
7210 }
7211 if (pVersion) {
7212 *pVersion = dtohl(map[1]);
7213 }
7214 if (pTargetCrc) {
7215 *pTargetCrc = dtohl(map[2]);
7216 }
7217 if (pOverlayCrc) {
7218 *pOverlayCrc = dtohl(map[3]);
7219 }
7220 if (pTargetPath) {
7221 pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
7222 }
7223 if (pOverlayPath) {
7224 pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
7225 }
7226 return true;
7227 }
7228
7229
7230 #define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
7231
7232 #define CHAR16_ARRAY_EQ(constant, var, len) \
7233 (((len) == (sizeof(constant)/sizeof((constant)[0]))) && (0 == memcmp((var), (constant), (len))))
7234
print_complex(uint32_t complex,bool isFraction)7235 static void print_complex(uint32_t complex, bool isFraction)
7236 {
7237 const float MANTISSA_MULT =
7238 1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
7239 const float RADIX_MULTS[] = {
7240 1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
7241 1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
7242 };
7243
7244 float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
7245 <<Res_value::COMPLEX_MANTISSA_SHIFT))
7246 * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
7247 & Res_value::COMPLEX_RADIX_MASK];
7248 printf("%f", value);
7249
7250 if (!isFraction) {
7251 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
7252 case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
7253 case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
7254 case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
7255 case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
7256 case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
7257 case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
7258 default: printf(" (unknown unit)"); break;
7259 }
7260 } else {
7261 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
7262 case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
7263 case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
7264 default: printf(" (unknown unit)"); break;
7265 }
7266 }
7267 }
7268
7269 // Normalize a string for output
normalizeForOutput(const char * input)7270 String8 ResTable::normalizeForOutput( const char *input )
7271 {
7272 String8 ret;
7273 char buff[2];
7274 buff[1] = '\0';
7275
7276 while (*input != '\0') {
7277 switch (*input) {
7278 // All interesting characters are in the ASCII zone, so we are making our own lives
7279 // easier by scanning the string one byte at a time.
7280 case '\\':
7281 ret += "\\\\";
7282 break;
7283 case '\n':
7284 ret += "\\n";
7285 break;
7286 case '"':
7287 ret += "\\\"";
7288 break;
7289 default:
7290 buff[0] = *input;
7291 ret += buff;
7292 break;
7293 }
7294
7295 input++;
7296 }
7297
7298 return ret;
7299 }
7300
print_value(const Package * pkg,const Res_value & value) const7301 void ResTable::print_value(const Package* pkg, const Res_value& value) const
7302 {
7303 if (value.dataType == Res_value::TYPE_NULL) {
7304 if (value.data == Res_value::DATA_NULL_UNDEFINED) {
7305 printf("(null)\n");
7306 } else if (value.data == Res_value::DATA_NULL_EMPTY) {
7307 printf("(null empty)\n");
7308 } else {
7309 // This should never happen.
7310 printf("(null) 0x%08x\n", value.data);
7311 }
7312 } else if (value.dataType == Res_value::TYPE_REFERENCE) {
7313 printf("(reference) 0x%08x\n", value.data);
7314 } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
7315 printf("(dynamic reference) 0x%08x\n", value.data);
7316 } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
7317 printf("(attribute) 0x%08x\n", value.data);
7318 } else if (value.dataType == Res_value::TYPE_DYNAMIC_ATTRIBUTE) {
7319 printf("(dynamic attribute) 0x%08x\n", value.data);
7320 } else if (value.dataType == Res_value::TYPE_STRING) {
7321 size_t len;
7322 const char* str8 = pkg->header->values.string8At(
7323 value.data, &len);
7324 if (str8 != NULL) {
7325 printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
7326 } else {
7327 const char16_t* str16 = pkg->header->values.stringAt(
7328 value.data, &len);
7329 if (str16 != NULL) {
7330 printf("(string16) \"%s\"\n",
7331 normalizeForOutput(String8(str16, len).string()).string());
7332 } else {
7333 printf("(string) null\n");
7334 }
7335 }
7336 } else if (value.dataType == Res_value::TYPE_FLOAT) {
7337 printf("(float) %g\n", *(const float*)&value.data);
7338 } else if (value.dataType == Res_value::TYPE_DIMENSION) {
7339 printf("(dimension) ");
7340 print_complex(value.data, false);
7341 printf("\n");
7342 } else if (value.dataType == Res_value::TYPE_FRACTION) {
7343 printf("(fraction) ");
7344 print_complex(value.data, true);
7345 printf("\n");
7346 } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
7347 || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
7348 printf("(color) #%08x\n", value.data);
7349 } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
7350 printf("(boolean) %s\n", value.data ? "true" : "false");
7351 } else if (value.dataType >= Res_value::TYPE_FIRST_INT
7352 || value.dataType <= Res_value::TYPE_LAST_INT) {
7353 printf("(int) 0x%08x or %d\n", value.data, value.data);
7354 } else {
7355 printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
7356 (int)value.dataType, (int)value.data,
7357 (int)value.size, (int)value.res0);
7358 }
7359 }
7360
print(bool inclValues) const7361 void ResTable::print(bool inclValues) const
7362 {
7363 if (mError != 0) {
7364 printf("mError=0x%x (%s)\n", mError, strerror(mError));
7365 }
7366 size_t pgCount = mPackageGroups.size();
7367 printf("Package Groups (%d)\n", (int)pgCount);
7368 for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
7369 const PackageGroup* pg = mPackageGroups[pgIndex];
7370 printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
7371 (int)pgIndex, pg->id, (int)pg->packages.size(),
7372 String8(pg->name).string());
7373
7374 const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
7375 const size_t refEntryCount = refEntries.size();
7376 if (refEntryCount > 0) {
7377 printf(" DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
7378 for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
7379 printf(" 0x%02x -> %s\n",
7380 refEntries.valueAt(refIndex),
7381 String8(refEntries.keyAt(refIndex)).string());
7382 }
7383 printf("\n");
7384 }
7385
7386 // Determine the number of resource splits for the resource types in this package.
7387 // It needs to be done outside of the loop below so all of the information for a
7388 // is displayed in a single block. Otherwise, a resource split's resource types
7389 // would be interleaved with other splits.
7390 size_t splitCount = 0;
7391 for (size_t typeIndex = 0; typeIndex < pg->types.size(); typeIndex++) {
7392 splitCount = max(splitCount, pg->types[typeIndex].size());
7393 }
7394
7395 int packageId = pg->id;
7396 for (size_t splitIndex = 0; splitIndex < splitCount; splitIndex++) {
7397 size_t pkgCount = pg->packages.size();
7398 for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
7399 const Package* pkg = pg->packages[pkgIndex];
7400 // Use a package's real ID, since the ID may have been assigned
7401 // if this package is a shared library.
7402 packageId = pkg->package->id;
7403 char16_t tmpName[sizeof(pkg->package->name)/sizeof(pkg->package->name[0])];
7404 strcpy16_dtoh(tmpName, pkg->package->name,
7405 sizeof(pkg->package->name)/sizeof(pkg->package->name[0]));
7406 printf(" Package %d id=0x%02x name=%s\n", (int)pkgIndex,
7407 pkg->package->id, String8(tmpName).string());
7408 }
7409
7410 for (size_t typeIndex = 0; typeIndex < pg->types.size(); typeIndex++) {
7411 const TypeList& typeList = pg->types[typeIndex];
7412 if (splitIndex >= typeList.size() || typeList.isEmpty()) {
7413 // Only dump if the split exists and contains entries for this type
7414 continue;
7415 }
7416 const Type* typeConfigs = typeList[splitIndex];
7417 const size_t NTC = typeConfigs->configs.size();
7418 printf(" type %d configCount=%d entryCount=%d\n",
7419 (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
7420 if (typeConfigs->typeSpecFlags != NULL) {
7421 for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
7422 uint32_t resID = (0xff000000 & ((packageId)<<24))
7423 | (0x00ff0000 & ((typeIndex+1)<<16))
7424 | (0x0000ffff & (entryIndex));
7425 // Since we are creating resID without actually
7426 // iterating over them, we have no idea which is a
7427 // dynamic reference. We must check.
7428 if (packageId == 0) {
7429 pg->dynamicRefTable.lookupResourceId(&resID);
7430 }
7431
7432 resource_name resName;
7433 if (this->getResourceName(resID, true, &resName)) {
7434 String8 type8;
7435 String8 name8;
7436 if (resName.type8 != NULL) {
7437 type8 = String8(resName.type8, resName.typeLen);
7438 } else {
7439 type8 = String8(resName.type, resName.typeLen);
7440 }
7441 if (resName.name8 != NULL) {
7442 name8 = String8(resName.name8, resName.nameLen);
7443 } else {
7444 name8 = String8(resName.name, resName.nameLen);
7445 }
7446 printf(" spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
7447 resID,
7448 CHAR16_TO_CSTR(resName.package, resName.packageLen),
7449 type8.string(), name8.string(),
7450 dtohl(typeConfigs->typeSpecFlags[entryIndex]));
7451 } else {
7452 printf(" INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
7453 }
7454 }
7455 }
7456 for (size_t configIndex=0; configIndex<NTC; configIndex++) {
7457 const ResTable_type* type = typeConfigs->configs[configIndex];
7458 if ((((uint64_t)type)&0x3) != 0) {
7459 printf(" NON-INTEGER ResTable_type ADDRESS: %p\n", type);
7460 continue;
7461 }
7462
7463 // Always copy the config, as fields get added and we need to
7464 // set the defaults.
7465 ResTable_config thisConfig;
7466 thisConfig.copyFromDtoH(type->config);
7467
7468 String8 configStr = thisConfig.toString();
7469 printf(" config %s", configStr.size() > 0
7470 ? configStr.string() : "(default)");
7471 if (type->flags != 0u) {
7472 printf(" flags=0x%02x", type->flags);
7473 if (type->flags & ResTable_type::FLAG_SPARSE) {
7474 printf(" [sparse]");
7475 }
7476 }
7477
7478 printf(":\n");
7479
7480 size_t entryCount = dtohl(type->entryCount);
7481 uint32_t entriesStart = dtohl(type->entriesStart);
7482 if ((entriesStart&0x3) != 0) {
7483 printf(" NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n",
7484 entriesStart);
7485 continue;
7486 }
7487 uint32_t typeSize = dtohl(type->header.size);
7488 if ((typeSize&0x3) != 0) {
7489 printf(" NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
7490 continue;
7491 }
7492
7493 const uint32_t* const eindex = (const uint32_t*)
7494 (((const uint8_t*)type) + dtohs(type->header.headerSize));
7495 for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
7496 size_t entryId;
7497 uint32_t thisOffset;
7498 if (type->flags & ResTable_type::FLAG_SPARSE) {
7499 const ResTable_sparseTypeEntry* entry =
7500 reinterpret_cast<const ResTable_sparseTypeEntry*>(
7501 eindex + entryIndex);
7502 entryId = dtohs(entry->idx);
7503 // Offsets are encoded as divided by 4.
7504 thisOffset = static_cast<uint32_t>(dtohs(entry->offset)) * 4u;
7505 } else {
7506 entryId = entryIndex;
7507 thisOffset = dtohl(eindex[entryIndex]);
7508 if (thisOffset == ResTable_type::NO_ENTRY) {
7509 continue;
7510 }
7511 }
7512
7513 uint32_t resID = (0xff000000 & ((packageId)<<24))
7514 | (0x00ff0000 & ((typeIndex+1)<<16))
7515 | (0x0000ffff & (entryId));
7516 if (packageId == 0) {
7517 pg->dynamicRefTable.lookupResourceId(&resID);
7518 }
7519 resource_name resName;
7520 if (this->getResourceName(resID, true, &resName)) {
7521 String8 type8;
7522 String8 name8;
7523 if (resName.type8 != NULL) {
7524 type8 = String8(resName.type8, resName.typeLen);
7525 } else {
7526 type8 = String8(resName.type, resName.typeLen);
7527 }
7528 if (resName.name8 != NULL) {
7529 name8 = String8(resName.name8, resName.nameLen);
7530 } else {
7531 name8 = String8(resName.name, resName.nameLen);
7532 }
7533 printf(" resource 0x%08x %s:%s/%s: ", resID,
7534 CHAR16_TO_CSTR(resName.package, resName.packageLen),
7535 type8.string(), name8.string());
7536 } else {
7537 printf(" INVALID RESOURCE 0x%08x: ", resID);
7538 }
7539 if ((thisOffset&0x3) != 0) {
7540 printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
7541 continue;
7542 }
7543 if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
7544 printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
7545 entriesStart, thisOffset, typeSize);
7546 continue;
7547 }
7548
7549 const ResTable_entry* ent = (const ResTable_entry*)
7550 (((const uint8_t*)type) + entriesStart + thisOffset);
7551 if (((entriesStart + thisOffset)&0x3) != 0) {
7552 printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
7553 (entriesStart + thisOffset));
7554 continue;
7555 }
7556
7557 uintptr_t esize = dtohs(ent->size);
7558 if ((esize&0x3) != 0) {
7559 printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
7560 continue;
7561 }
7562 if ((thisOffset+esize) > typeSize) {
7563 printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
7564 entriesStart, thisOffset, (void *)esize, typeSize);
7565 continue;
7566 }
7567
7568 const Res_value* valuePtr = NULL;
7569 const ResTable_map_entry* bagPtr = NULL;
7570 Res_value value;
7571 if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
7572 printf("<bag>");
7573 bagPtr = (const ResTable_map_entry*)ent;
7574 } else {
7575 valuePtr = (const Res_value*)
7576 (((const uint8_t*)ent) + esize);
7577 value.copyFrom_dtoh(*valuePtr);
7578 printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
7579 (int)value.dataType, (int)value.data,
7580 (int)value.size, (int)value.res0);
7581 }
7582
7583 if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
7584 printf(" (PUBLIC)");
7585 }
7586 printf("\n");
7587
7588 if (inclValues) {
7589 if (valuePtr != NULL) {
7590 printf(" ");
7591 print_value(typeConfigs->package, value);
7592 } else if (bagPtr != NULL) {
7593 const int N = dtohl(bagPtr->count);
7594 const uint8_t* baseMapPtr = (const uint8_t*)ent;
7595 size_t mapOffset = esize;
7596 const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
7597 const uint32_t parent = dtohl(bagPtr->parent.ident);
7598 uint32_t resolvedParent = parent;
7599 if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
7600 status_t err =
7601 pg->dynamicRefTable.lookupResourceId(&resolvedParent);
7602 if (err != NO_ERROR) {
7603 resolvedParent = 0;
7604 }
7605 }
7606 printf(" Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
7607 parent, resolvedParent, N);
7608 for (int i=0;
7609 i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
7610 printf(" #%i (Key=0x%08x): ",
7611 i, dtohl(mapPtr->name.ident));
7612 value.copyFrom_dtoh(mapPtr->value);
7613 print_value(typeConfigs->package, value);
7614 const size_t size = dtohs(mapPtr->value.size);
7615 mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
7616 mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
7617 }
7618 }
7619 }
7620 }
7621 }
7622 }
7623 }
7624 }
7625 }
7626
7627 } // namespace android
7628