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 <utils/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 #define IDMAP_CURRENT_VERSION 0x00000001
63
64 #define APP_PACKAGE_ID 0x7f
65 #define SYS_PACKAGE_ID 0x01
66
67 static const bool kDebugStringPoolNoisy = false;
68 static const bool kDebugXMLNoisy = false;
69 static const bool kDebugTableNoisy = false;
70 static const bool kDebugTableGetEntry = false;
71 static const bool kDebugTableSuperNoisy = false;
72 static const bool kDebugLoadTableNoisy = false;
73 static const bool kDebugLoadTableSuperNoisy = false;
74 static const bool kDebugTableTheme = false;
75 static const bool kDebugResXMLTree = false;
76 static const bool kDebugLibNoisy = false;
77
78 // TODO: This code uses 0xFFFFFFFF converted to bag_set* as a sentinel value. This is bad practice.
79
80 // Standard C isspace() is only required to look at the low byte of its input, so
81 // produces incorrect results for UTF-16 characters. For safety's sake, assume that
82 // any high-byte UTF-16 code point is not whitespace.
isspace16(char16_t c)83 inline int isspace16(char16_t c) {
84 return (c < 0x0080 && isspace(c));
85 }
86
87 template<typename T>
max(T a,T b)88 inline static T max(T a, T b) {
89 return a > b ? a : b;
90 }
91
92 // range checked; guaranteed to NUL-terminate within the stated number of available slots
93 // NOTE: if this truncates the dst string due to running out of space, no attempt is
94 // made to avoid splitting surrogate pairs.
strcpy16_dtoh(char16_t * dst,const uint16_t * src,size_t avail)95 static void strcpy16_dtoh(char16_t* dst, const uint16_t* src, size_t avail)
96 {
97 char16_t* last = dst + avail - 1;
98 while (*src && (dst < last)) {
99 char16_t s = dtohs(static_cast<char16_t>(*src));
100 *dst++ = s;
101 src++;
102 }
103 *dst = 0;
104 }
105
validate_chunk(const ResChunk_header * chunk,size_t minSize,const uint8_t * dataEnd,const char * name)106 static status_t validate_chunk(const ResChunk_header* chunk,
107 size_t minSize,
108 const uint8_t* dataEnd,
109 const char* name)
110 {
111 const uint16_t headerSize = dtohs(chunk->headerSize);
112 const uint32_t size = dtohl(chunk->size);
113
114 if (headerSize >= minSize) {
115 if (headerSize <= size) {
116 if (((headerSize|size)&0x3) == 0) {
117 if ((size_t)size <= (size_t)(dataEnd-((const uint8_t*)chunk))) {
118 return NO_ERROR;
119 }
120 ALOGW("%s data size 0x%x extends beyond resource end %p.",
121 name, size, (void*)(dataEnd-((const uint8_t*)chunk)));
122 return BAD_TYPE;
123 }
124 ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
125 name, (int)size, (int)headerSize);
126 return BAD_TYPE;
127 }
128 ALOGW("%s size 0x%x is smaller than header size 0x%x.",
129 name, size, headerSize);
130 return BAD_TYPE;
131 }
132 ALOGW("%s header size 0x%04x is too small.",
133 name, headerSize);
134 return BAD_TYPE;
135 }
136
fill9patchOffsets(Res_png_9patch * patch)137 static void fill9patchOffsets(Res_png_9patch* patch) {
138 patch->xDivsOffset = sizeof(Res_png_9patch);
139 patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
140 patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
141 }
142
copyFrom_dtoh(const Res_value & src)143 inline void Res_value::copyFrom_dtoh(const Res_value& src)
144 {
145 size = dtohs(src.size);
146 res0 = src.res0;
147 dataType = src.dataType;
148 data = dtohl(src.data);
149 }
150
deviceToFile()151 void Res_png_9patch::deviceToFile()
152 {
153 int32_t* xDivs = getXDivs();
154 for (int i = 0; i < numXDivs; i++) {
155 xDivs[i] = htonl(xDivs[i]);
156 }
157 int32_t* yDivs = getYDivs();
158 for (int i = 0; i < numYDivs; i++) {
159 yDivs[i] = htonl(yDivs[i]);
160 }
161 paddingLeft = htonl(paddingLeft);
162 paddingRight = htonl(paddingRight);
163 paddingTop = htonl(paddingTop);
164 paddingBottom = htonl(paddingBottom);
165 uint32_t* colors = getColors();
166 for (int i=0; i<numColors; i++) {
167 colors[i] = htonl(colors[i]);
168 }
169 }
170
fileToDevice()171 void Res_png_9patch::fileToDevice()
172 {
173 int32_t* xDivs = getXDivs();
174 for (int i = 0; i < numXDivs; i++) {
175 xDivs[i] = ntohl(xDivs[i]);
176 }
177 int32_t* yDivs = getYDivs();
178 for (int i = 0; i < numYDivs; i++) {
179 yDivs[i] = ntohl(yDivs[i]);
180 }
181 paddingLeft = ntohl(paddingLeft);
182 paddingRight = ntohl(paddingRight);
183 paddingTop = ntohl(paddingTop);
184 paddingBottom = ntohl(paddingBottom);
185 uint32_t* colors = getColors();
186 for (int i=0; i<numColors; i++) {
187 colors[i] = ntohl(colors[i]);
188 }
189 }
190
serializedSize() const191 size_t Res_png_9patch::serializedSize() const
192 {
193 // The size of this struct is 32 bytes on the 32-bit target system
194 // 4 * int8_t
195 // 4 * int32_t
196 // 3 * uint32_t
197 return 32
198 + numXDivs * sizeof(int32_t)
199 + numYDivs * sizeof(int32_t)
200 + numColors * sizeof(uint32_t);
201 }
202
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors)203 void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
204 const int32_t* yDivs, const uint32_t* colors)
205 {
206 // Use calloc since we're going to leave a few holes in the data
207 // and want this to run cleanly under valgrind
208 void* newData = calloc(1, patch.serializedSize());
209 serialize(patch, xDivs, yDivs, colors, newData);
210 return newData;
211 }
212
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors,void * outData)213 void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
214 const int32_t* yDivs, const uint32_t* colors, void* outData)
215 {
216 uint8_t* data = (uint8_t*) outData;
217 memcpy(data, &patch.wasDeserialized, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
218 memcpy(data + 12, &patch.paddingLeft, 16); // copy paddingXXXX
219 data += 32;
220
221 memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
222 data += patch.numXDivs * sizeof(int32_t);
223 memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
224 data += patch.numYDivs * sizeof(int32_t);
225 memcpy(data, colors, patch.numColors * sizeof(uint32_t));
226
227 fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
228 }
229
assertIdmapHeader(const void * idmap,size_t size)230 static bool assertIdmapHeader(const void* idmap, size_t size) {
231 if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
232 ALOGE("idmap: header is not word aligned");
233 return false;
234 }
235
236 if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
237 ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
238 return false;
239 }
240
241 const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
242 if (magic != IDMAP_MAGIC) {
243 ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
244 magic, IDMAP_MAGIC);
245 return false;
246 }
247
248 const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
249 if (version != IDMAP_CURRENT_VERSION) {
250 // We are strict about versions because files with this format are
251 // auto-generated and don't need backwards compatibility.
252 ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
253 version, IDMAP_CURRENT_VERSION);
254 return false;
255 }
256 return true;
257 }
258
259 class IdmapEntries {
260 public:
IdmapEntries()261 IdmapEntries() : mData(NULL) {}
262
hasEntries() const263 bool hasEntries() const {
264 if (mData == NULL) {
265 return false;
266 }
267
268 return (dtohs(*mData) > 0);
269 }
270
byteSize() const271 size_t byteSize() const {
272 if (mData == NULL) {
273 return 0;
274 }
275 uint16_t entryCount = dtohs(mData[2]);
276 return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
277 }
278
targetTypeId() const279 uint8_t targetTypeId() const {
280 if (mData == NULL) {
281 return 0;
282 }
283 return dtohs(mData[0]);
284 }
285
overlayTypeId() const286 uint8_t overlayTypeId() const {
287 if (mData == NULL) {
288 return 0;
289 }
290 return dtohs(mData[1]);
291 }
292
setTo(const void * entryHeader,size_t size)293 status_t setTo(const void* entryHeader, size_t size) {
294 if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
295 ALOGE("idmap: entry header is not word aligned");
296 return UNKNOWN_ERROR;
297 }
298
299 if (size < sizeof(uint16_t) * 4) {
300 ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
301 return UNKNOWN_ERROR;
302 }
303
304 const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
305 const uint16_t targetTypeId = dtohs(header[0]);
306 const uint16_t overlayTypeId = dtohs(header[1]);
307 if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
308 ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
309 return UNKNOWN_ERROR;
310 }
311
312 uint16_t entryCount = dtohs(header[2]);
313 if (size < sizeof(uint32_t) * (entryCount + 2)) {
314 ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
315 (uint32_t) size, (uint32_t) entryCount);
316 return UNKNOWN_ERROR;
317 }
318 mData = header;
319 return NO_ERROR;
320 }
321
lookup(uint16_t entryId,uint16_t * outEntryId) const322 status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
323 uint16_t entryCount = dtohs(mData[2]);
324 uint16_t offset = dtohs(mData[3]);
325
326 if (entryId < offset) {
327 // The entry is not present in this idmap
328 return BAD_INDEX;
329 }
330
331 entryId -= offset;
332
333 if (entryId >= entryCount) {
334 // The entry is not present in this idmap
335 return BAD_INDEX;
336 }
337
338 // It is safe to access the type here without checking the size because
339 // we have checked this when it was first loaded.
340 const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
341 uint32_t mappedEntry = dtohl(entries[entryId]);
342 if (mappedEntry == 0xffffffff) {
343 // This entry is not present in this idmap
344 return BAD_INDEX;
345 }
346 *outEntryId = static_cast<uint16_t>(mappedEntry);
347 return NO_ERROR;
348 }
349
350 private:
351 const uint16_t* mData;
352 };
353
parseIdmap(const void * idmap,size_t size,uint8_t * outPackageId,KeyedVector<uint8_t,IdmapEntries> * outMap)354 status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
355 if (!assertIdmapHeader(idmap, size)) {
356 return UNKNOWN_ERROR;
357 }
358
359 size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
360 if (size < sizeof(uint16_t) * 2) {
361 ALOGE("idmap: too small to contain any mapping");
362 return UNKNOWN_ERROR;
363 }
364
365 const uint16_t* data = reinterpret_cast<const uint16_t*>(
366 reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
367
368 uint16_t targetPackageId = dtohs(*(data++));
369 if (targetPackageId == 0 || targetPackageId > 255) {
370 ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
371 return UNKNOWN_ERROR;
372 }
373
374 uint16_t mapCount = dtohs(*(data++));
375 if (mapCount == 0) {
376 ALOGE("idmap: no mappings");
377 return UNKNOWN_ERROR;
378 }
379
380 if (mapCount > 255) {
381 ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
382 }
383
384 while (size > sizeof(uint16_t) * 4) {
385 IdmapEntries entries;
386 status_t err = entries.setTo(data, size);
387 if (err != NO_ERROR) {
388 return err;
389 }
390
391 ssize_t index = outMap->add(entries.overlayTypeId(), entries);
392 if (index < 0) {
393 return NO_MEMORY;
394 }
395
396 data += entries.byteSize() / sizeof(uint16_t);
397 size -= entries.byteSize();
398 }
399
400 if (outPackageId != NULL) {
401 *outPackageId = static_cast<uint8_t>(targetPackageId);
402 }
403 return NO_ERROR;
404 }
405
deserialize(void * inData)406 Res_png_9patch* Res_png_9patch::deserialize(void* inData)
407 {
408
409 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
410 patch->wasDeserialized = true;
411 fill9patchOffsets(patch);
412
413 return patch;
414 }
415
416 // --------------------------------------------------------------------
417 // --------------------------------------------------------------------
418 // --------------------------------------------------------------------
419
ResStringPool()420 ResStringPool::ResStringPool()
421 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
422 {
423 }
424
ResStringPool(const void * data,size_t size,bool copyData)425 ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
426 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
427 {
428 setTo(data, size, copyData);
429 }
430
~ResStringPool()431 ResStringPool::~ResStringPool()
432 {
433 uninit();
434 }
435
setToEmpty()436 void ResStringPool::setToEmpty()
437 {
438 uninit();
439
440 mOwnedData = calloc(1, sizeof(ResStringPool_header));
441 ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
442 mSize = 0;
443 mEntries = NULL;
444 mStrings = NULL;
445 mStringPoolSize = 0;
446 mEntryStyles = NULL;
447 mStyles = NULL;
448 mStylePoolSize = 0;
449 mHeader = (const ResStringPool_header*) header;
450 }
451
setTo(const void * data,size_t size,bool copyData)452 status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
453 {
454 if (!data || !size) {
455 return (mError=BAD_TYPE);
456 }
457
458 uninit();
459
460 const bool notDeviceEndian = htods(0xf0) != 0xf0;
461
462 if (copyData || notDeviceEndian) {
463 mOwnedData = malloc(size);
464 if (mOwnedData == NULL) {
465 return (mError=NO_MEMORY);
466 }
467 memcpy(mOwnedData, data, size);
468 data = mOwnedData;
469 }
470
471 mHeader = (const ResStringPool_header*)data;
472
473 if (notDeviceEndian) {
474 ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
475 h->header.headerSize = dtohs(mHeader->header.headerSize);
476 h->header.type = dtohs(mHeader->header.type);
477 h->header.size = dtohl(mHeader->header.size);
478 h->stringCount = dtohl(mHeader->stringCount);
479 h->styleCount = dtohl(mHeader->styleCount);
480 h->flags = dtohl(mHeader->flags);
481 h->stringsStart = dtohl(mHeader->stringsStart);
482 h->stylesStart = dtohl(mHeader->stylesStart);
483 }
484
485 if (mHeader->header.headerSize > mHeader->header.size
486 || mHeader->header.size > size) {
487 ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
488 (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
489 return (mError=BAD_TYPE);
490 }
491 mSize = mHeader->header.size;
492 mEntries = (const uint32_t*)
493 (((const uint8_t*)data)+mHeader->header.headerSize);
494
495 if (mHeader->stringCount > 0) {
496 if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount) // uint32 overflow?
497 || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
498 > size) {
499 ALOGW("Bad string block: entry of %d items extends past data size %d\n",
500 (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
501 (int)size);
502 return (mError=BAD_TYPE);
503 }
504
505 size_t charSize;
506 if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
507 charSize = sizeof(uint8_t);
508 } else {
509 charSize = sizeof(uint16_t);
510 }
511
512 // There should be at least space for the smallest string
513 // (2 bytes length, null terminator).
514 if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
515 ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
516 (int)mHeader->stringsStart, (int)mHeader->header.size);
517 return (mError=BAD_TYPE);
518 }
519
520 mStrings = (const void*)
521 (((const uint8_t*)data) + mHeader->stringsStart);
522
523 if (mHeader->styleCount == 0) {
524 mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
525 } else {
526 // check invariant: styles starts before end of data
527 if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
528 ALOGW("Bad style block: style block starts at %d past data size of %d\n",
529 (int)mHeader->stylesStart, (int)mHeader->header.size);
530 return (mError=BAD_TYPE);
531 }
532 // check invariant: styles follow the strings
533 if (mHeader->stylesStart <= mHeader->stringsStart) {
534 ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
535 (int)mHeader->stylesStart, (int)mHeader->stringsStart);
536 return (mError=BAD_TYPE);
537 }
538 mStringPoolSize =
539 (mHeader->stylesStart-mHeader->stringsStart)/charSize;
540 }
541
542 // check invariant: stringCount > 0 requires a string pool to exist
543 if (mStringPoolSize == 0) {
544 ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
545 return (mError=BAD_TYPE);
546 }
547
548 if (notDeviceEndian) {
549 size_t i;
550 uint32_t* e = const_cast<uint32_t*>(mEntries);
551 for (i=0; i<mHeader->stringCount; i++) {
552 e[i] = dtohl(mEntries[i]);
553 }
554 if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
555 const uint16_t* strings = (const uint16_t*)mStrings;
556 uint16_t* s = const_cast<uint16_t*>(strings);
557 for (i=0; i<mStringPoolSize; i++) {
558 s[i] = dtohs(strings[i]);
559 }
560 }
561 }
562
563 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
564 ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
565 (!(mHeader->flags&ResStringPool_header::UTF8_FLAG) &&
566 ((uint16_t*)mStrings)[mStringPoolSize-1] != 0)) {
567 ALOGW("Bad string block: last string is not 0-terminated\n");
568 return (mError=BAD_TYPE);
569 }
570 } else {
571 mStrings = NULL;
572 mStringPoolSize = 0;
573 }
574
575 if (mHeader->styleCount > 0) {
576 mEntryStyles = mEntries + mHeader->stringCount;
577 // invariant: integer overflow in calculating mEntryStyles
578 if (mEntryStyles < mEntries) {
579 ALOGW("Bad string block: integer overflow finding styles\n");
580 return (mError=BAD_TYPE);
581 }
582
583 if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
584 ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
585 (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
586 (int)size);
587 return (mError=BAD_TYPE);
588 }
589 mStyles = (const uint32_t*)
590 (((const uint8_t*)data)+mHeader->stylesStart);
591 if (mHeader->stylesStart >= mHeader->header.size) {
592 ALOGW("Bad string block: style pool starts %d, after total size %d\n",
593 (int)mHeader->stylesStart, (int)mHeader->header.size);
594 return (mError=BAD_TYPE);
595 }
596 mStylePoolSize =
597 (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
598
599 if (notDeviceEndian) {
600 size_t i;
601 uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
602 for (i=0; i<mHeader->styleCount; i++) {
603 e[i] = dtohl(mEntryStyles[i]);
604 }
605 uint32_t* s = const_cast<uint32_t*>(mStyles);
606 for (i=0; i<mStylePoolSize; i++) {
607 s[i] = dtohl(mStyles[i]);
608 }
609 }
610
611 const ResStringPool_span endSpan = {
612 { htodl(ResStringPool_span::END) },
613 htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
614 };
615 if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
616 &endSpan, sizeof(endSpan)) != 0) {
617 ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
618 return (mError=BAD_TYPE);
619 }
620 } else {
621 mEntryStyles = NULL;
622 mStyles = NULL;
623 mStylePoolSize = 0;
624 }
625
626 return (mError=NO_ERROR);
627 }
628
getError() const629 status_t ResStringPool::getError() const
630 {
631 return mError;
632 }
633
uninit()634 void ResStringPool::uninit()
635 {
636 mError = NO_INIT;
637 if (mHeader != NULL && mCache != NULL) {
638 for (size_t x = 0; x < mHeader->stringCount; x++) {
639 if (mCache[x] != NULL) {
640 free(mCache[x]);
641 mCache[x] = NULL;
642 }
643 }
644 free(mCache);
645 mCache = NULL;
646 }
647 if (mOwnedData) {
648 free(mOwnedData);
649 mOwnedData = NULL;
650 }
651 }
652
653 /**
654 * Strings in UTF-16 format have length indicated by a length encoded in the
655 * stored data. It is either 1 or 2 characters of length data. This allows a
656 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
657 * much data in a string, you're abusing them.
658 *
659 * If the high bit is set, then there are two characters or 4 bytes of length
660 * data encoded. In that case, drop the high bit of the first character and
661 * add it together with the next character.
662 */
663 static inline size_t
decodeLength(const uint16_t ** str)664 decodeLength(const uint16_t** str)
665 {
666 size_t len = **str;
667 if ((len & 0x8000) != 0) {
668 (*str)++;
669 len = ((len & 0x7FFF) << 16) | **str;
670 }
671 (*str)++;
672 return len;
673 }
674
675 /**
676 * Strings in UTF-8 format have length indicated by a length encoded in the
677 * stored data. It is either 1 or 2 characters of length data. This allows a
678 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
679 * text in another way if you're using that much data in a single string.
680 *
681 * If the high bit is set, then there are two characters or 2 bytes of length
682 * data encoded. In that case, drop the high bit of the first character and
683 * add it together with the next character.
684 */
685 static inline size_t
decodeLength(const uint8_t ** str)686 decodeLength(const uint8_t** str)
687 {
688 size_t len = **str;
689 if ((len & 0x80) != 0) {
690 (*str)++;
691 len = ((len & 0x7F) << 8) | **str;
692 }
693 (*str)++;
694 return len;
695 }
696
stringAt(size_t idx,size_t * u16len) const697 const char16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
698 {
699 if (mError == NO_ERROR && idx < mHeader->stringCount) {
700 const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
701 const uint32_t off = mEntries[idx]/(isUTF8?sizeof(uint8_t):sizeof(uint16_t));
702 if (off < (mStringPoolSize-1)) {
703 if (!isUTF8) {
704 const uint16_t* strings = (uint16_t*)mStrings;
705 const uint16_t* str = strings+off;
706
707 *u16len = decodeLength(&str);
708 if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
709 // Reject malformed (non null-terminated) strings
710 if (str[*u16len] != 0x0000) {
711 ALOGW("Bad string block: string #%d is not null-terminated",
712 (int)idx);
713 return NULL;
714 }
715 return reinterpret_cast<const char16_t*>(str);
716 } else {
717 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
718 (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
719 }
720 } else {
721 const uint8_t* strings = (uint8_t*)mStrings;
722 const uint8_t* u8str = strings+off;
723
724 *u16len = decodeLength(&u8str);
725 size_t u8len = decodeLength(&u8str);
726
727 // encLen must be less than 0x7FFF due to encoding.
728 if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
729 AutoMutex lock(mDecodeLock);
730
731 if (mCache == NULL) {
732 #ifndef __ANDROID__
733 if (kDebugStringPoolNoisy) {
734 ALOGI("CREATING STRING CACHE OF %zu bytes",
735 mHeader->stringCount*sizeof(char16_t**));
736 }
737 #else
738 // We do not want to be in this case when actually running Android.
739 ALOGW("CREATING STRING CACHE OF %zu bytes",
740 static_cast<size_t>(mHeader->stringCount*sizeof(char16_t**)));
741 #endif
742 mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
743 if (mCache == NULL) {
744 ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
745 (int)(mHeader->stringCount*sizeof(char16_t**)));
746 return NULL;
747 }
748 }
749
750 if (mCache[idx] != NULL) {
751 return mCache[idx];
752 }
753
754 ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
755 if (actualLen < 0 || (size_t)actualLen != *u16len) {
756 ALOGW("Bad string block: string #%lld decoded length is not correct "
757 "%lld vs %llu\n",
758 (long long)idx, (long long)actualLen, (long long)*u16len);
759 return NULL;
760 }
761
762 // Reject malformed (non null-terminated) strings
763 if (u8str[u8len] != 0x00) {
764 ALOGW("Bad string block: string #%d is not null-terminated",
765 (int)idx);
766 return NULL;
767 }
768
769 char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
770 if (!u16str) {
771 ALOGW("No memory when trying to allocate decode cache for string #%d\n",
772 (int)idx);
773 return NULL;
774 }
775
776 if (kDebugStringPoolNoisy) {
777 ALOGI("Caching UTF8 string: %s", u8str);
778 }
779 utf8_to_utf16(u8str, u8len, u16str);
780 mCache[idx] = u16str;
781 return u16str;
782 } else {
783 ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
784 (long long)idx, (long long)(u8str+u8len-strings),
785 (long long)mStringPoolSize);
786 }
787 }
788 } else {
789 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
790 (int)idx, (int)(off*sizeof(uint16_t)),
791 (int)(mStringPoolSize*sizeof(uint16_t)));
792 }
793 }
794 return NULL;
795 }
796
string8At(size_t idx,size_t * outLen) const797 const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
798 {
799 if (mError == NO_ERROR && idx < mHeader->stringCount) {
800 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
801 return NULL;
802 }
803 const uint32_t off = mEntries[idx]/sizeof(char);
804 if (off < (mStringPoolSize-1)) {
805 const uint8_t* strings = (uint8_t*)mStrings;
806 const uint8_t* str = strings+off;
807 *outLen = decodeLength(&str);
808 size_t encLen = decodeLength(&str);
809 if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
810 return (const char*)str;
811 } else {
812 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
813 (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
814 }
815 } else {
816 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
817 (int)idx, (int)(off*sizeof(uint16_t)),
818 (int)(mStringPoolSize*sizeof(uint16_t)));
819 }
820 }
821 return NULL;
822 }
823
string8ObjectAt(size_t idx) const824 const String8 ResStringPool::string8ObjectAt(size_t idx) const
825 {
826 size_t len;
827 const char *str = string8At(idx, &len);
828 if (str != NULL) {
829 return String8(str, len);
830 }
831
832 const char16_t *str16 = stringAt(idx, &len);
833 if (str16 != NULL) {
834 return String8(str16, len);
835 }
836 return String8();
837 }
838
styleAt(const ResStringPool_ref & ref) const839 const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
840 {
841 return styleAt(ref.index);
842 }
843
styleAt(size_t idx) const844 const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
845 {
846 if (mError == NO_ERROR && idx < mHeader->styleCount) {
847 const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
848 if (off < mStylePoolSize) {
849 return (const ResStringPool_span*)(mStyles+off);
850 } else {
851 ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
852 (int)idx, (int)(off*sizeof(uint32_t)),
853 (int)(mStylePoolSize*sizeof(uint32_t)));
854 }
855 }
856 return NULL;
857 }
858
indexOfString(const char16_t * str,size_t strLen) const859 ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
860 {
861 if (mError != NO_ERROR) {
862 return mError;
863 }
864
865 size_t len;
866
867 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
868 if (kDebugStringPoolNoisy) {
869 ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string());
870 }
871
872 // The string pool contains UTF 8 strings; we don't want to cause
873 // temporary UTF-16 strings to be created as we search.
874 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
875 // Do a binary search for the string... this is a little tricky,
876 // because the strings are sorted with strzcmp16(). So to match
877 // the ordering, we need to convert strings in the pool to UTF-16.
878 // But we don't want to hit the cache, so instead we will have a
879 // local temporary allocation for the conversions.
880 char16_t* convBuffer = (char16_t*)malloc(strLen+4);
881 ssize_t l = 0;
882 ssize_t h = mHeader->stringCount-1;
883
884 ssize_t mid;
885 while (l <= h) {
886 mid = l + (h - l)/2;
887 const uint8_t* s = (const uint8_t*)string8At(mid, &len);
888 int c;
889 if (s != NULL) {
890 char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
891 *end = 0;
892 c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
893 } else {
894 c = -1;
895 }
896 if (kDebugStringPoolNoisy) {
897 ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
898 (const char*)s, c, (int)l, (int)mid, (int)h);
899 }
900 if (c == 0) {
901 if (kDebugStringPoolNoisy) {
902 ALOGI("MATCH!");
903 }
904 free(convBuffer);
905 return mid;
906 } else if (c < 0) {
907 l = mid + 1;
908 } else {
909 h = mid - 1;
910 }
911 }
912 free(convBuffer);
913 } else {
914 // It is unusual to get the ID from an unsorted string block...
915 // most often this happens because we want to get IDs for style
916 // span tags; since those always appear at the end of the string
917 // block, start searching at the back.
918 String8 str8(str, strLen);
919 const size_t str8Len = str8.size();
920 for (int i=mHeader->stringCount-1; i>=0; i--) {
921 const char* s = string8At(i, &len);
922 if (kDebugStringPoolNoisy) {
923 ALOGI("Looking at %s, i=%d\n", String8(s).string(), i);
924 }
925 if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
926 if (kDebugStringPoolNoisy) {
927 ALOGI("MATCH!");
928 }
929 return i;
930 }
931 }
932 }
933
934 } else {
935 if (kDebugStringPoolNoisy) {
936 ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string());
937 }
938
939 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
940 // Do a binary search for the string...
941 ssize_t l = 0;
942 ssize_t h = mHeader->stringCount-1;
943
944 ssize_t mid;
945 while (l <= h) {
946 mid = l + (h - l)/2;
947 const char16_t* s = stringAt(mid, &len);
948 int c = s ? strzcmp16(s, len, str, strLen) : -1;
949 if (kDebugStringPoolNoisy) {
950 ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
951 String8(s).string(), c, (int)l, (int)mid, (int)h);
952 }
953 if (c == 0) {
954 if (kDebugStringPoolNoisy) {
955 ALOGI("MATCH!");
956 }
957 return mid;
958 } else if (c < 0) {
959 l = mid + 1;
960 } else {
961 h = mid - 1;
962 }
963 }
964 } else {
965 // It is unusual to get the ID from an unsorted string block...
966 // most often this happens because we want to get IDs for style
967 // span tags; since those always appear at the end of the string
968 // block, start searching at the back.
969 for (int i=mHeader->stringCount-1; i>=0; i--) {
970 const char16_t* s = stringAt(i, &len);
971 if (kDebugStringPoolNoisy) {
972 ALOGI("Looking at %s, i=%d\n", String8(s).string(), i);
973 }
974 if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
975 if (kDebugStringPoolNoisy) {
976 ALOGI("MATCH!");
977 }
978 return i;
979 }
980 }
981 }
982 }
983
984 return NAME_NOT_FOUND;
985 }
986
size() const987 size_t ResStringPool::size() const
988 {
989 return (mError == NO_ERROR) ? mHeader->stringCount : 0;
990 }
991
styleCount() const992 size_t ResStringPool::styleCount() const
993 {
994 return (mError == NO_ERROR) ? mHeader->styleCount : 0;
995 }
996
bytes() const997 size_t ResStringPool::bytes() const
998 {
999 return (mError == NO_ERROR) ? mHeader->header.size : 0;
1000 }
1001
isSorted() const1002 bool ResStringPool::isSorted() const
1003 {
1004 return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
1005 }
1006
isUTF8() const1007 bool ResStringPool::isUTF8() const
1008 {
1009 return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
1010 }
1011
1012 // --------------------------------------------------------------------
1013 // --------------------------------------------------------------------
1014 // --------------------------------------------------------------------
1015
ResXMLParser(const ResXMLTree & tree)1016 ResXMLParser::ResXMLParser(const ResXMLTree& tree)
1017 : mTree(tree), mEventCode(BAD_DOCUMENT)
1018 {
1019 }
1020
restart()1021 void ResXMLParser::restart()
1022 {
1023 mCurNode = NULL;
1024 mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
1025 }
getStrings() const1026 const ResStringPool& ResXMLParser::getStrings() const
1027 {
1028 return mTree.mStrings;
1029 }
1030
getEventType() const1031 ResXMLParser::event_code_t ResXMLParser::getEventType() const
1032 {
1033 return mEventCode;
1034 }
1035
next()1036 ResXMLParser::event_code_t ResXMLParser::next()
1037 {
1038 if (mEventCode == START_DOCUMENT) {
1039 mCurNode = mTree.mRootNode;
1040 mCurExt = mTree.mRootExt;
1041 return (mEventCode=mTree.mRootCode);
1042 } else if (mEventCode >= FIRST_CHUNK_CODE) {
1043 return nextNode();
1044 }
1045 return mEventCode;
1046 }
1047
getCommentID() const1048 int32_t ResXMLParser::getCommentID() const
1049 {
1050 return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1051 }
1052
getComment(size_t * outLen) const1053 const char16_t* ResXMLParser::getComment(size_t* outLen) const
1054 {
1055 int32_t id = getCommentID();
1056 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1057 }
1058
getLineNumber() const1059 uint32_t ResXMLParser::getLineNumber() const
1060 {
1061 return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1062 }
1063
getTextID() const1064 int32_t ResXMLParser::getTextID() const
1065 {
1066 if (mEventCode == TEXT) {
1067 return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1068 }
1069 return -1;
1070 }
1071
getText(size_t * outLen) const1072 const char16_t* ResXMLParser::getText(size_t* outLen) const
1073 {
1074 int32_t id = getTextID();
1075 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1076 }
1077
getTextValue(Res_value * outValue) const1078 ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1079 {
1080 if (mEventCode == TEXT) {
1081 outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1082 return sizeof(Res_value);
1083 }
1084 return BAD_TYPE;
1085 }
1086
getNamespacePrefixID() const1087 int32_t ResXMLParser::getNamespacePrefixID() const
1088 {
1089 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1090 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1091 }
1092 return -1;
1093 }
1094
getNamespacePrefix(size_t * outLen) const1095 const char16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1096 {
1097 int32_t id = getNamespacePrefixID();
1098 //printf("prefix=%d event=%p\n", id, mEventCode);
1099 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1100 }
1101
getNamespaceUriID() const1102 int32_t ResXMLParser::getNamespaceUriID() const
1103 {
1104 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1105 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1106 }
1107 return -1;
1108 }
1109
getNamespaceUri(size_t * outLen) const1110 const char16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1111 {
1112 int32_t id = getNamespaceUriID();
1113 //printf("uri=%d event=%p\n", id, mEventCode);
1114 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1115 }
1116
getElementNamespaceID() const1117 int32_t ResXMLParser::getElementNamespaceID() const
1118 {
1119 if (mEventCode == START_TAG) {
1120 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1121 }
1122 if (mEventCode == END_TAG) {
1123 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1124 }
1125 return -1;
1126 }
1127
getElementNamespace(size_t * outLen) const1128 const char16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1129 {
1130 int32_t id = getElementNamespaceID();
1131 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1132 }
1133
getElementNameID() const1134 int32_t ResXMLParser::getElementNameID() const
1135 {
1136 if (mEventCode == START_TAG) {
1137 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1138 }
1139 if (mEventCode == END_TAG) {
1140 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1141 }
1142 return -1;
1143 }
1144
getElementName(size_t * outLen) const1145 const char16_t* ResXMLParser::getElementName(size_t* outLen) const
1146 {
1147 int32_t id = getElementNameID();
1148 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1149 }
1150
getAttributeCount() const1151 size_t ResXMLParser::getAttributeCount() const
1152 {
1153 if (mEventCode == START_TAG) {
1154 return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1155 }
1156 return 0;
1157 }
1158
getAttributeNamespaceID(size_t idx) const1159 int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1160 {
1161 if (mEventCode == START_TAG) {
1162 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1163 if (idx < dtohs(tag->attributeCount)) {
1164 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1165 (((const uint8_t*)tag)
1166 + dtohs(tag->attributeStart)
1167 + (dtohs(tag->attributeSize)*idx));
1168 return dtohl(attr->ns.index);
1169 }
1170 }
1171 return -2;
1172 }
1173
getAttributeNamespace(size_t idx,size_t * outLen) const1174 const char16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1175 {
1176 int32_t id = getAttributeNamespaceID(idx);
1177 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1178 if (kDebugXMLNoisy) {
1179 printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1180 }
1181 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1182 }
1183
getAttributeNamespace8(size_t idx,size_t * outLen) const1184 const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1185 {
1186 int32_t id = getAttributeNamespaceID(idx);
1187 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1188 if (kDebugXMLNoisy) {
1189 printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1190 }
1191 return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1192 }
1193
getAttributeNameID(size_t idx) const1194 int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1195 {
1196 if (mEventCode == START_TAG) {
1197 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1198 if (idx < dtohs(tag->attributeCount)) {
1199 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1200 (((const uint8_t*)tag)
1201 + dtohs(tag->attributeStart)
1202 + (dtohs(tag->attributeSize)*idx));
1203 return dtohl(attr->name.index);
1204 }
1205 }
1206 return -1;
1207 }
1208
getAttributeName(size_t idx,size_t * outLen) const1209 const char16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1210 {
1211 int32_t id = getAttributeNameID(idx);
1212 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1213 if (kDebugXMLNoisy) {
1214 printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1215 }
1216 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1217 }
1218
getAttributeName8(size_t idx,size_t * outLen) const1219 const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1220 {
1221 int32_t id = getAttributeNameID(idx);
1222 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1223 if (kDebugXMLNoisy) {
1224 printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1225 }
1226 return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1227 }
1228
getAttributeNameResID(size_t idx) const1229 uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1230 {
1231 int32_t id = getAttributeNameID(idx);
1232 if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1233 uint32_t resId = dtohl(mTree.mResIds[id]);
1234 if (mTree.mDynamicRefTable != NULL) {
1235 mTree.mDynamicRefTable->lookupResourceId(&resId);
1236 }
1237 return resId;
1238 }
1239 return 0;
1240 }
1241
getAttributeValueStringID(size_t idx) const1242 int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1243 {
1244 if (mEventCode == START_TAG) {
1245 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1246 if (idx < dtohs(tag->attributeCount)) {
1247 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1248 (((const uint8_t*)tag)
1249 + dtohs(tag->attributeStart)
1250 + (dtohs(tag->attributeSize)*idx));
1251 return dtohl(attr->rawValue.index);
1252 }
1253 }
1254 return -1;
1255 }
1256
getAttributeStringValue(size_t idx,size_t * outLen) const1257 const char16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1258 {
1259 int32_t id = getAttributeValueStringID(idx);
1260 if (kDebugXMLNoisy) {
1261 printf("getAttributeValue 0x%zx=0x%x\n", idx, id);
1262 }
1263 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1264 }
1265
getAttributeDataType(size_t idx) const1266 int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1267 {
1268 if (mEventCode == START_TAG) {
1269 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1270 if (idx < dtohs(tag->attributeCount)) {
1271 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1272 (((const uint8_t*)tag)
1273 + dtohs(tag->attributeStart)
1274 + (dtohs(tag->attributeSize)*idx));
1275 uint8_t type = attr->typedValue.dataType;
1276 if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1277 return type;
1278 }
1279
1280 // This is a dynamic reference. We adjust those references
1281 // to regular references at this level, so lie to the caller.
1282 return Res_value::TYPE_REFERENCE;
1283 }
1284 }
1285 return Res_value::TYPE_NULL;
1286 }
1287
getAttributeData(size_t idx) const1288 int32_t ResXMLParser::getAttributeData(size_t idx) const
1289 {
1290 if (mEventCode == START_TAG) {
1291 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1292 if (idx < dtohs(tag->attributeCount)) {
1293 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1294 (((const uint8_t*)tag)
1295 + dtohs(tag->attributeStart)
1296 + (dtohs(tag->attributeSize)*idx));
1297 if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1298 mTree.mDynamicRefTable == NULL) {
1299 return dtohl(attr->typedValue.data);
1300 }
1301
1302 uint32_t data = dtohl(attr->typedValue.data);
1303 if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1304 return data;
1305 }
1306 }
1307 }
1308 return 0;
1309 }
1310
getAttributeValue(size_t idx,Res_value * outValue) const1311 ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1312 {
1313 if (mEventCode == START_TAG) {
1314 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1315 if (idx < dtohs(tag->attributeCount)) {
1316 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1317 (((const uint8_t*)tag)
1318 + dtohs(tag->attributeStart)
1319 + (dtohs(tag->attributeSize)*idx));
1320 outValue->copyFrom_dtoh(attr->typedValue);
1321 if (mTree.mDynamicRefTable != NULL &&
1322 mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1323 return BAD_TYPE;
1324 }
1325 return sizeof(Res_value);
1326 }
1327 }
1328 return BAD_TYPE;
1329 }
1330
indexOfAttribute(const char * ns,const char * attr) const1331 ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1332 {
1333 String16 nsStr(ns != NULL ? ns : "");
1334 String16 attrStr(attr);
1335 return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1336 attrStr.string(), attrStr.size());
1337 }
1338
indexOfAttribute(const char16_t * ns,size_t nsLen,const char16_t * attr,size_t attrLen) const1339 ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1340 const char16_t* attr, size_t attrLen) const
1341 {
1342 if (mEventCode == START_TAG) {
1343 if (attr == NULL) {
1344 return NAME_NOT_FOUND;
1345 }
1346 const size_t N = getAttributeCount();
1347 if (mTree.mStrings.isUTF8()) {
1348 String8 ns8, attr8;
1349 if (ns != NULL) {
1350 ns8 = String8(ns, nsLen);
1351 }
1352 attr8 = String8(attr, attrLen);
1353 if (kDebugStringPoolNoisy) {
1354 ALOGI("indexOfAttribute UTF8 %s (%zu) / %s (%zu)", ns8.string(), nsLen,
1355 attr8.string(), attrLen);
1356 }
1357 for (size_t i=0; i<N; i++) {
1358 size_t curNsLen = 0, curAttrLen = 0;
1359 const char* curNs = getAttributeNamespace8(i, &curNsLen);
1360 const char* curAttr = getAttributeName8(i, &curAttrLen);
1361 if (kDebugStringPoolNoisy) {
1362 ALOGI(" curNs=%s (%zu), curAttr=%s (%zu)", curNs, curNsLen, curAttr, curAttrLen);
1363 }
1364 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1365 && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1366 if (ns == NULL) {
1367 if (curNs == NULL) {
1368 if (kDebugStringPoolNoisy) {
1369 ALOGI(" FOUND!");
1370 }
1371 return i;
1372 }
1373 } else if (curNs != NULL) {
1374 //printf(" --> ns=%s, curNs=%s\n",
1375 // String8(ns).string(), String8(curNs).string());
1376 if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1377 if (kDebugStringPoolNoisy) {
1378 ALOGI(" FOUND!");
1379 }
1380 return i;
1381 }
1382 }
1383 }
1384 }
1385 } else {
1386 if (kDebugStringPoolNoisy) {
1387 ALOGI("indexOfAttribute UTF16 %s (%zu) / %s (%zu)",
1388 String8(ns, nsLen).string(), nsLen,
1389 String8(attr, attrLen).string(), attrLen);
1390 }
1391 for (size_t i=0; i<N; i++) {
1392 size_t curNsLen = 0, curAttrLen = 0;
1393 const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1394 const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1395 if (kDebugStringPoolNoisy) {
1396 ALOGI(" curNs=%s (%zu), curAttr=%s (%zu)",
1397 String8(curNs, curNsLen).string(), curNsLen,
1398 String8(curAttr, curAttrLen).string(), curAttrLen);
1399 }
1400 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1401 && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1402 if (ns == NULL) {
1403 if (curNs == NULL) {
1404 if (kDebugStringPoolNoisy) {
1405 ALOGI(" FOUND!");
1406 }
1407 return i;
1408 }
1409 } else if (curNs != NULL) {
1410 //printf(" --> ns=%s, curNs=%s\n",
1411 // String8(ns).string(), String8(curNs).string());
1412 if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1413 if (kDebugStringPoolNoisy) {
1414 ALOGI(" FOUND!");
1415 }
1416 return i;
1417 }
1418 }
1419 }
1420 }
1421 }
1422 }
1423
1424 return NAME_NOT_FOUND;
1425 }
1426
indexOfID() const1427 ssize_t ResXMLParser::indexOfID() const
1428 {
1429 if (mEventCode == START_TAG) {
1430 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1431 if (idx > 0) return (idx-1);
1432 }
1433 return NAME_NOT_FOUND;
1434 }
1435
indexOfClass() const1436 ssize_t ResXMLParser::indexOfClass() const
1437 {
1438 if (mEventCode == START_TAG) {
1439 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1440 if (idx > 0) return (idx-1);
1441 }
1442 return NAME_NOT_FOUND;
1443 }
1444
indexOfStyle() const1445 ssize_t ResXMLParser::indexOfStyle() const
1446 {
1447 if (mEventCode == START_TAG) {
1448 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1449 if (idx > 0) return (idx-1);
1450 }
1451 return NAME_NOT_FOUND;
1452 }
1453
nextNode()1454 ResXMLParser::event_code_t ResXMLParser::nextNode()
1455 {
1456 if (mEventCode < 0) {
1457 return mEventCode;
1458 }
1459
1460 do {
1461 const ResXMLTree_node* next = (const ResXMLTree_node*)
1462 (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1463 if (kDebugXMLNoisy) {
1464 ALOGI("Next node: prev=%p, next=%p\n", mCurNode, next);
1465 }
1466
1467 if (((const uint8_t*)next) >= mTree.mDataEnd) {
1468 mCurNode = NULL;
1469 return (mEventCode=END_DOCUMENT);
1470 }
1471
1472 if (mTree.validateNode(next) != NO_ERROR) {
1473 mCurNode = NULL;
1474 return (mEventCode=BAD_DOCUMENT);
1475 }
1476
1477 mCurNode = next;
1478 const uint16_t headerSize = dtohs(next->header.headerSize);
1479 const uint32_t totalSize = dtohl(next->header.size);
1480 mCurExt = ((const uint8_t*)next) + headerSize;
1481 size_t minExtSize = 0;
1482 event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1483 switch ((mEventCode=eventCode)) {
1484 case RES_XML_START_NAMESPACE_TYPE:
1485 case RES_XML_END_NAMESPACE_TYPE:
1486 minExtSize = sizeof(ResXMLTree_namespaceExt);
1487 break;
1488 case RES_XML_START_ELEMENT_TYPE:
1489 minExtSize = sizeof(ResXMLTree_attrExt);
1490 break;
1491 case RES_XML_END_ELEMENT_TYPE:
1492 minExtSize = sizeof(ResXMLTree_endElementExt);
1493 break;
1494 case RES_XML_CDATA_TYPE:
1495 minExtSize = sizeof(ResXMLTree_cdataExt);
1496 break;
1497 default:
1498 ALOGW("Unknown XML block: header type %d in node at %d\n",
1499 (int)dtohs(next->header.type),
1500 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1501 continue;
1502 }
1503
1504 if ((totalSize-headerSize) < minExtSize) {
1505 ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1506 (int)dtohs(next->header.type),
1507 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1508 (int)(totalSize-headerSize), (int)minExtSize);
1509 return (mEventCode=BAD_DOCUMENT);
1510 }
1511
1512 //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1513 // mCurNode, mCurExt, headerSize, minExtSize);
1514
1515 return eventCode;
1516 } while (true);
1517 }
1518
getPosition(ResXMLParser::ResXMLPosition * pos) const1519 void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1520 {
1521 pos->eventCode = mEventCode;
1522 pos->curNode = mCurNode;
1523 pos->curExt = mCurExt;
1524 }
1525
setPosition(const ResXMLParser::ResXMLPosition & pos)1526 void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1527 {
1528 mEventCode = pos.eventCode;
1529 mCurNode = pos.curNode;
1530 mCurExt = pos.curExt;
1531 }
1532
1533 // --------------------------------------------------------------------
1534
1535 static volatile int32_t gCount = 0;
1536
ResXMLTree(const DynamicRefTable * dynamicRefTable)1537 ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1538 : ResXMLParser(*this)
1539 , mDynamicRefTable(dynamicRefTable)
1540 , mError(NO_INIT), mOwnedData(NULL)
1541 {
1542 if (kDebugResXMLTree) {
1543 ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1544 }
1545 restart();
1546 }
1547
ResXMLTree()1548 ResXMLTree::ResXMLTree()
1549 : ResXMLParser(*this)
1550 , mDynamicRefTable(NULL)
1551 , mError(NO_INIT), mOwnedData(NULL)
1552 {
1553 if (kDebugResXMLTree) {
1554 ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1555 }
1556 restart();
1557 }
1558
~ResXMLTree()1559 ResXMLTree::~ResXMLTree()
1560 {
1561 if (kDebugResXMLTree) {
1562 ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1563 }
1564 uninit();
1565 }
1566
setTo(const void * data,size_t size,bool copyData)1567 status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1568 {
1569 uninit();
1570 mEventCode = START_DOCUMENT;
1571
1572 if (!data || !size) {
1573 return (mError=BAD_TYPE);
1574 }
1575
1576 if (copyData) {
1577 mOwnedData = malloc(size);
1578 if (mOwnedData == NULL) {
1579 return (mError=NO_MEMORY);
1580 }
1581 memcpy(mOwnedData, data, size);
1582 data = mOwnedData;
1583 }
1584
1585 mHeader = (const ResXMLTree_header*)data;
1586 mSize = dtohl(mHeader->header.size);
1587 if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1588 ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1589 (int)dtohs(mHeader->header.headerSize),
1590 (int)dtohl(mHeader->header.size), (int)size);
1591 mError = BAD_TYPE;
1592 restart();
1593 return mError;
1594 }
1595 mDataEnd = ((const uint8_t*)mHeader) + mSize;
1596
1597 mStrings.uninit();
1598 mRootNode = NULL;
1599 mResIds = NULL;
1600 mNumResIds = 0;
1601
1602 // First look for a couple interesting chunks: the string block
1603 // and first XML node.
1604 const ResChunk_header* chunk =
1605 (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1606 const ResChunk_header* lastChunk = chunk;
1607 while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1608 ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1609 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1610 if (err != NO_ERROR) {
1611 mError = err;
1612 goto done;
1613 }
1614 const uint16_t type = dtohs(chunk->type);
1615 const size_t size = dtohl(chunk->size);
1616 if (kDebugXMLNoisy) {
1617 printf("Scanning @ %p: type=0x%x, size=0x%zx\n",
1618 (void*)(((uintptr_t)chunk)-((uintptr_t)mHeader)), type, size);
1619 }
1620 if (type == RES_STRING_POOL_TYPE) {
1621 mStrings.setTo(chunk, size);
1622 } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1623 mResIds = (const uint32_t*)
1624 (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1625 mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1626 } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1627 && type <= RES_XML_LAST_CHUNK_TYPE) {
1628 if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1629 mError = BAD_TYPE;
1630 goto done;
1631 }
1632 mCurNode = (const ResXMLTree_node*)lastChunk;
1633 if (nextNode() == BAD_DOCUMENT) {
1634 mError = BAD_TYPE;
1635 goto done;
1636 }
1637 mRootNode = mCurNode;
1638 mRootExt = mCurExt;
1639 mRootCode = mEventCode;
1640 break;
1641 } else {
1642 if (kDebugXMLNoisy) {
1643 printf("Skipping unknown chunk!\n");
1644 }
1645 }
1646 lastChunk = chunk;
1647 chunk = (const ResChunk_header*)
1648 (((const uint8_t*)chunk) + size);
1649 }
1650
1651 if (mRootNode == NULL) {
1652 ALOGW("Bad XML block: no root element node found\n");
1653 mError = BAD_TYPE;
1654 goto done;
1655 }
1656
1657 mError = mStrings.getError();
1658
1659 done:
1660 restart();
1661 return mError;
1662 }
1663
getError() const1664 status_t ResXMLTree::getError() const
1665 {
1666 return mError;
1667 }
1668
uninit()1669 void ResXMLTree::uninit()
1670 {
1671 mError = NO_INIT;
1672 mStrings.uninit();
1673 if (mOwnedData) {
1674 free(mOwnedData);
1675 mOwnedData = NULL;
1676 }
1677 restart();
1678 }
1679
validateNode(const ResXMLTree_node * node) const1680 status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1681 {
1682 const uint16_t eventCode = dtohs(node->header.type);
1683
1684 status_t err = validate_chunk(
1685 &node->header, sizeof(ResXMLTree_node),
1686 mDataEnd, "ResXMLTree_node");
1687
1688 if (err >= NO_ERROR) {
1689 // Only perform additional validation on START nodes
1690 if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1691 return NO_ERROR;
1692 }
1693
1694 const uint16_t headerSize = dtohs(node->header.headerSize);
1695 const uint32_t size = dtohl(node->header.size);
1696 const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1697 (((const uint8_t*)node) + headerSize);
1698 // check for sensical values pulled out of the stream so far...
1699 if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1700 && ((void*)attrExt > (void*)node)) {
1701 const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1702 * dtohs(attrExt->attributeCount);
1703 if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1704 return NO_ERROR;
1705 }
1706 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1707 (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1708 (unsigned int)(size-headerSize));
1709 }
1710 else {
1711 ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1712 (unsigned int)headerSize, (unsigned int)size);
1713 }
1714 return BAD_TYPE;
1715 }
1716
1717 return err;
1718
1719 #if 0
1720 const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1721
1722 const uint16_t headerSize = dtohs(node->header.headerSize);
1723 const uint32_t size = dtohl(node->header.size);
1724
1725 if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1726 if (size >= headerSize) {
1727 if (((const uint8_t*)node) <= (mDataEnd-size)) {
1728 if (!isStart) {
1729 return NO_ERROR;
1730 }
1731 if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1732 <= (size-headerSize)) {
1733 return NO_ERROR;
1734 }
1735 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1736 ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1737 (int)(size-headerSize));
1738 return BAD_TYPE;
1739 }
1740 ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1741 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1742 return BAD_TYPE;
1743 }
1744 ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1745 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1746 (int)headerSize, (int)size);
1747 return BAD_TYPE;
1748 }
1749 ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1750 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1751 (int)headerSize);
1752 return BAD_TYPE;
1753 #endif
1754 }
1755
1756 // --------------------------------------------------------------------
1757 // --------------------------------------------------------------------
1758 // --------------------------------------------------------------------
1759
copyFromDeviceNoSwap(const ResTable_config & o)1760 void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1761 const size_t size = dtohl(o.size);
1762 if (size >= sizeof(ResTable_config)) {
1763 *this = o;
1764 } else {
1765 memcpy(this, &o, size);
1766 memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1767 }
1768 }
1769
unpackLanguageOrRegion(const char in[2],const char base,char out[4])1770 /* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1771 char out[4]) {
1772 if (in[0] & 0x80) {
1773 // The high bit is "1", which means this is a packed three letter
1774 // language code.
1775
1776 // The smallest 5 bits of the second char are the first alphabet.
1777 const uint8_t first = in[1] & 0x1f;
1778 // The last three bits of the second char and the first two bits
1779 // of the first char are the second alphabet.
1780 const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1781 // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1782 const uint8_t third = (in[0] & 0x7c) >> 2;
1783
1784 out[0] = first + base;
1785 out[1] = second + base;
1786 out[2] = third + base;
1787 out[3] = 0;
1788
1789 return 3;
1790 }
1791
1792 if (in[0]) {
1793 memcpy(out, in, 2);
1794 memset(out + 2, 0, 2);
1795 return 2;
1796 }
1797
1798 memset(out, 0, 4);
1799 return 0;
1800 }
1801
packLanguageOrRegion(const char * in,const char base,char out[2])1802 /* static */ void packLanguageOrRegion(const char* in, const char base,
1803 char out[2]) {
1804 if (in[2] == 0 || in[2] == '-') {
1805 out[0] = in[0];
1806 out[1] = in[1];
1807 } else {
1808 uint8_t first = (in[0] - base) & 0x007f;
1809 uint8_t second = (in[1] - base) & 0x007f;
1810 uint8_t third = (in[2] - base) & 0x007f;
1811
1812 out[0] = (0x80 | (third << 2) | (second >> 3));
1813 out[1] = ((second << 5) | first);
1814 }
1815 }
1816
1817
packLanguage(const char * language)1818 void ResTable_config::packLanguage(const char* language) {
1819 packLanguageOrRegion(language, 'a', this->language);
1820 }
1821
packRegion(const char * region)1822 void ResTable_config::packRegion(const char* region) {
1823 packLanguageOrRegion(region, '0', this->country);
1824 }
1825
unpackLanguage(char language[4]) const1826 size_t ResTable_config::unpackLanguage(char language[4]) const {
1827 return unpackLanguageOrRegion(this->language, 'a', language);
1828 }
1829
unpackRegion(char region[4]) const1830 size_t ResTable_config::unpackRegion(char region[4]) const {
1831 return unpackLanguageOrRegion(this->country, '0', region);
1832 }
1833
1834
copyFromDtoH(const ResTable_config & o)1835 void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1836 copyFromDeviceNoSwap(o);
1837 size = sizeof(ResTable_config);
1838 mcc = dtohs(mcc);
1839 mnc = dtohs(mnc);
1840 density = dtohs(density);
1841 screenWidth = dtohs(screenWidth);
1842 screenHeight = dtohs(screenHeight);
1843 sdkVersion = dtohs(sdkVersion);
1844 minorVersion = dtohs(minorVersion);
1845 smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1846 screenWidthDp = dtohs(screenWidthDp);
1847 screenHeightDp = dtohs(screenHeightDp);
1848 }
1849
swapHtoD()1850 void ResTable_config::swapHtoD() {
1851 size = htodl(size);
1852 mcc = htods(mcc);
1853 mnc = htods(mnc);
1854 density = htods(density);
1855 screenWidth = htods(screenWidth);
1856 screenHeight = htods(screenHeight);
1857 sdkVersion = htods(sdkVersion);
1858 minorVersion = htods(minorVersion);
1859 smallestScreenWidthDp = htods(smallestScreenWidthDp);
1860 screenWidthDp = htods(screenWidthDp);
1861 screenHeightDp = htods(screenHeightDp);
1862 }
1863
compareLocales(const ResTable_config & l,const ResTable_config & r)1864 /* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1865 if (l.locale != r.locale) {
1866 // NOTE: This is the old behaviour with respect to comparison orders.
1867 // The diff value here doesn't make much sense (given our bit packing scheme)
1868 // but it's stable, and that's all we need.
1869 return l.locale - r.locale;
1870 }
1871
1872 // The language & region are equal, so compare the scripts and variants.
1873 const char emptyScript[sizeof(l.localeScript)] = {'\0', '\0', '\0', '\0'};
1874 const char *lScript = l.localeScriptWasComputed ? emptyScript : l.localeScript;
1875 const char *rScript = r.localeScriptWasComputed ? emptyScript : r.localeScript;
1876 int script = memcmp(lScript, rScript, sizeof(l.localeScript));
1877 if (script) {
1878 return script;
1879 }
1880
1881 // The language, region and script are equal, so compare variants.
1882 //
1883 // This should happen very infrequently (if at all.)
1884 return memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1885 }
1886
compare(const ResTable_config & o) const1887 int ResTable_config::compare(const ResTable_config& o) const {
1888 int32_t diff = (int32_t)(imsi - o.imsi);
1889 if (diff != 0) return diff;
1890 diff = compareLocales(*this, o);
1891 if (diff != 0) return diff;
1892 diff = (int32_t)(screenType - o.screenType);
1893 if (diff != 0) return diff;
1894 diff = (int32_t)(input - o.input);
1895 if (diff != 0) return diff;
1896 diff = (int32_t)(screenSize - o.screenSize);
1897 if (diff != 0) return diff;
1898 diff = (int32_t)(version - o.version);
1899 if (diff != 0) return diff;
1900 diff = (int32_t)(screenLayout - o.screenLayout);
1901 if (diff != 0) return diff;
1902 diff = (int32_t)(screenLayout2 - o.screenLayout2);
1903 if (diff != 0) return diff;
1904 diff = (int32_t)(uiMode - o.uiMode);
1905 if (diff != 0) return diff;
1906 diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1907 if (diff != 0) return diff;
1908 diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1909 return (int)diff;
1910 }
1911
compareLogical(const ResTable_config & o) const1912 int ResTable_config::compareLogical(const ResTable_config& o) const {
1913 if (mcc != o.mcc) {
1914 return mcc < o.mcc ? -1 : 1;
1915 }
1916 if (mnc != o.mnc) {
1917 return mnc < o.mnc ? -1 : 1;
1918 }
1919
1920 int diff = compareLocales(*this, o);
1921 if (diff < 0) {
1922 return -1;
1923 }
1924 if (diff > 0) {
1925 return 1;
1926 }
1927
1928 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1929 return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1930 }
1931 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1932 return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1933 }
1934 if (screenWidthDp != o.screenWidthDp) {
1935 return screenWidthDp < o.screenWidthDp ? -1 : 1;
1936 }
1937 if (screenHeightDp != o.screenHeightDp) {
1938 return screenHeightDp < o.screenHeightDp ? -1 : 1;
1939 }
1940 if (screenWidth != o.screenWidth) {
1941 return screenWidth < o.screenWidth ? -1 : 1;
1942 }
1943 if (screenHeight != o.screenHeight) {
1944 return screenHeight < o.screenHeight ? -1 : 1;
1945 }
1946 if (density != o.density) {
1947 return density < o.density ? -1 : 1;
1948 }
1949 if (orientation != o.orientation) {
1950 return orientation < o.orientation ? -1 : 1;
1951 }
1952 if (touchscreen != o.touchscreen) {
1953 return touchscreen < o.touchscreen ? -1 : 1;
1954 }
1955 if (input != o.input) {
1956 return input < o.input ? -1 : 1;
1957 }
1958 if (screenLayout != o.screenLayout) {
1959 return screenLayout < o.screenLayout ? -1 : 1;
1960 }
1961 if (screenLayout2 != o.screenLayout2) {
1962 return screenLayout2 < o.screenLayout2 ? -1 : 1;
1963 }
1964 if (uiMode != o.uiMode) {
1965 return uiMode < o.uiMode ? -1 : 1;
1966 }
1967 if (version != o.version) {
1968 return version < o.version ? -1 : 1;
1969 }
1970 return 0;
1971 }
1972
diff(const ResTable_config & o) const1973 int ResTable_config::diff(const ResTable_config& o) const {
1974 int diffs = 0;
1975 if (mcc != o.mcc) diffs |= CONFIG_MCC;
1976 if (mnc != o.mnc) diffs |= CONFIG_MNC;
1977 if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1978 if (density != o.density) diffs |= CONFIG_DENSITY;
1979 if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1980 if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1981 diffs |= CONFIG_KEYBOARD_HIDDEN;
1982 if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1983 if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1984 if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1985 if (version != o.version) diffs |= CONFIG_VERSION;
1986 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
1987 if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
1988 if ((screenLayout2 & MASK_SCREENROUND) != (o.screenLayout2 & MASK_SCREENROUND)) diffs |= CONFIG_SCREEN_ROUND;
1989 if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1990 if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1991 if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1992
1993 const int diff = compareLocales(*this, o);
1994 if (diff) diffs |= CONFIG_LOCALE;
1995
1996 return diffs;
1997 }
1998
isLocaleMoreSpecificThan(const ResTable_config & o) const1999 int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
2000 if (locale || o.locale) {
2001 if (language[0] != o.language[0]) {
2002 if (!language[0]) return -1;
2003 if (!o.language[0]) return 1;
2004 }
2005
2006 if (country[0] != o.country[0]) {
2007 if (!country[0]) return -1;
2008 if (!o.country[0]) return 1;
2009 }
2010 }
2011
2012 // There isn't a well specified "importance" order between variants and
2013 // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
2014 // specific than "en-US-POSIX".
2015 //
2016 // We therefore arbitrarily decide to give priority to variants over
2017 // scripts since it seems more useful to do so. We will consider
2018 // "en-US-POSIX" to be more specific than "en-Latn-US".
2019
2020 const int score = ((localeScript[0] != '\0' && !localeScriptWasComputed) ? 1 : 0) +
2021 ((localeVariant[0] != '\0') ? 2 : 0);
2022
2023 const int oScore = (o.localeScript[0] != '\0' && !o.localeScriptWasComputed ? 1 : 0) +
2024 ((o.localeVariant[0] != '\0') ? 2 : 0);
2025
2026 return score - oScore;
2027
2028 }
2029
isMoreSpecificThan(const ResTable_config & o) const2030 bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
2031 // The order of the following tests defines the importance of one
2032 // configuration parameter over another. Those tests first are more
2033 // important, trumping any values in those following them.
2034 if (imsi || o.imsi) {
2035 if (mcc != o.mcc) {
2036 if (!mcc) return false;
2037 if (!o.mcc) return true;
2038 }
2039
2040 if (mnc != o.mnc) {
2041 if (!mnc) return false;
2042 if (!o.mnc) return true;
2043 }
2044 }
2045
2046 if (locale || o.locale) {
2047 const int diff = isLocaleMoreSpecificThan(o);
2048 if (diff < 0) {
2049 return false;
2050 }
2051
2052 if (diff > 0) {
2053 return true;
2054 }
2055 }
2056
2057 if (screenLayout || o.screenLayout) {
2058 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
2059 if (!(screenLayout & MASK_LAYOUTDIR)) return false;
2060 if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
2061 }
2062 }
2063
2064 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2065 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2066 if (!smallestScreenWidthDp) return false;
2067 if (!o.smallestScreenWidthDp) return true;
2068 }
2069 }
2070
2071 if (screenSizeDp || o.screenSizeDp) {
2072 if (screenWidthDp != o.screenWidthDp) {
2073 if (!screenWidthDp) return false;
2074 if (!o.screenWidthDp) return true;
2075 }
2076
2077 if (screenHeightDp != o.screenHeightDp) {
2078 if (!screenHeightDp) return false;
2079 if (!o.screenHeightDp) return true;
2080 }
2081 }
2082
2083 if (screenLayout || o.screenLayout) {
2084 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
2085 if (!(screenLayout & MASK_SCREENSIZE)) return false;
2086 if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2087 }
2088 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2089 if (!(screenLayout & MASK_SCREENLONG)) return false;
2090 if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2091 }
2092 }
2093
2094 if (screenLayout2 || o.screenLayout2) {
2095 if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0) {
2096 if (!(screenLayout2 & MASK_SCREENROUND)) return false;
2097 if (!(o.screenLayout2 & MASK_SCREENROUND)) return true;
2098 }
2099 }
2100
2101 if (orientation != o.orientation) {
2102 if (!orientation) return false;
2103 if (!o.orientation) return true;
2104 }
2105
2106 if (uiMode || o.uiMode) {
2107 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2108 if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2109 if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2110 }
2111 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2112 if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2113 if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2114 }
2115 }
2116
2117 // density is never 'more specific'
2118 // as the default just equals 160
2119
2120 if (touchscreen != o.touchscreen) {
2121 if (!touchscreen) return false;
2122 if (!o.touchscreen) return true;
2123 }
2124
2125 if (input || o.input) {
2126 if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2127 if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2128 if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2129 }
2130
2131 if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2132 if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2133 if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2134 }
2135
2136 if (keyboard != o.keyboard) {
2137 if (!keyboard) return false;
2138 if (!o.keyboard) return true;
2139 }
2140
2141 if (navigation != o.navigation) {
2142 if (!navigation) return false;
2143 if (!o.navigation) return true;
2144 }
2145 }
2146
2147 if (screenSize || o.screenSize) {
2148 if (screenWidth != o.screenWidth) {
2149 if (!screenWidth) return false;
2150 if (!o.screenWidth) return true;
2151 }
2152
2153 if (screenHeight != o.screenHeight) {
2154 if (!screenHeight) return false;
2155 if (!o.screenHeight) return true;
2156 }
2157 }
2158
2159 if (version || o.version) {
2160 if (sdkVersion != o.sdkVersion) {
2161 if (!sdkVersion) return false;
2162 if (!o.sdkVersion) return true;
2163 }
2164
2165 if (minorVersion != o.minorVersion) {
2166 if (!minorVersion) return false;
2167 if (!o.minorVersion) return true;
2168 }
2169 }
2170 return false;
2171 }
2172
isLocaleBetterThan(const ResTable_config & o,const ResTable_config * requested) const2173 bool ResTable_config::isLocaleBetterThan(const ResTable_config& o,
2174 const ResTable_config* requested) const {
2175 if (requested->locale == 0) {
2176 // The request doesn't have a locale, so no resource is better
2177 // than the other.
2178 return false;
2179 }
2180
2181 if (locale == 0 && o.locale == 0) {
2182 // The locales parts of both resources are empty, so no one is better
2183 // than the other.
2184 return false;
2185 }
2186
2187 // Non-matching locales have been filtered out, so both resources
2188 // match the requested locale.
2189 //
2190 // Because of the locale-related checks in match() and the checks, we know
2191 // that:
2192 // 1) The resource languages are either empty or match the request;
2193 // and
2194 // 2) If the request's script is known, the resource scripts are either
2195 // unknown or match the request.
2196
2197 if (language[0] != o.language[0]) {
2198 // The languages of the two resources are not the same. We can only
2199 // assume that one of the two resources matched the request because one
2200 // doesn't have a language and the other has a matching language.
2201 //
2202 // We consider the one that has the language specified a better match.
2203 //
2204 // The exception is that we consider no-language resources a better match
2205 // for US English and similar locales than locales that are a descendant
2206 // of Internatinal English (en-001), since no-language resources are
2207 // where the US English resource have traditionally lived for most apps.
2208 if (requested->language[0] == 'e' && requested->language[1] == 'n') {
2209 if (requested->country[0] == 'U' && requested->country[1] == 'S') {
2210 // For US English itself, we consider a no-locale resource a
2211 // better match if the other resource has a country other than
2212 // US specified.
2213 if (language[0] != '\0') {
2214 return country[0] == '\0' || (country[0] == 'U' && country[1] == 'S');
2215 } else {
2216 return !(o.country[0] == '\0' || (o.country[0] == 'U' && o.country[1] == 'S'));
2217 }
2218 } else if (localeDataIsCloseToUsEnglish(requested->country)) {
2219 if (language[0] != '\0') {
2220 return localeDataIsCloseToUsEnglish(country);
2221 } else {
2222 return !localeDataIsCloseToUsEnglish(o.country);
2223 }
2224 }
2225 }
2226 return (language[0] != '\0');
2227 }
2228
2229 // If we are here, both the resources have the same non-empty language as
2230 // the request.
2231 //
2232 // Because the languages are the same, computeScript() always
2233 // returns a non-empty script for languages it knows about, and we have passed
2234 // the script checks in match(), the scripts are either all unknown or are
2235 // all the same. So we can't gain anything by checking the scripts. We need
2236 // to check the region and variant.
2237
2238 // See if any of the regions is better than the other
2239 const int region_comparison = localeDataCompareRegions(
2240 country, o.country,
2241 language, requested->localeScript, requested->country);
2242 if (region_comparison != 0) {
2243 return (region_comparison > 0);
2244 }
2245
2246 // The regions are the same. Try the variant.
2247 if (requested->localeVariant[0] != '\0'
2248 && strncmp(localeVariant, requested->localeVariant, sizeof(localeVariant)) == 0) {
2249 return (strncmp(o.localeVariant, requested->localeVariant, sizeof(localeVariant)) != 0);
2250 }
2251
2252 return false;
2253 }
2254
isBetterThan(const ResTable_config & o,const ResTable_config * requested) const2255 bool ResTable_config::isBetterThan(const ResTable_config& o,
2256 const ResTable_config* requested) const {
2257 if (requested) {
2258 if (imsi || o.imsi) {
2259 if ((mcc != o.mcc) && requested->mcc) {
2260 return (mcc);
2261 }
2262
2263 if ((mnc != o.mnc) && requested->mnc) {
2264 return (mnc);
2265 }
2266 }
2267
2268 if (isLocaleBetterThan(o, requested)) {
2269 return true;
2270 }
2271
2272 if (screenLayout || o.screenLayout) {
2273 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2274 && (requested->screenLayout & MASK_LAYOUTDIR)) {
2275 int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2276 int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2277 return (myLayoutDir > oLayoutDir);
2278 }
2279 }
2280
2281 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2282 // The configuration closest to the actual size is best.
2283 // We assume that larger configs have already been filtered
2284 // out at this point. That means we just want the largest one.
2285 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2286 return smallestScreenWidthDp > o.smallestScreenWidthDp;
2287 }
2288 }
2289
2290 if (screenSizeDp || o.screenSizeDp) {
2291 // "Better" is based on the sum of the difference between both
2292 // width and height from the requested dimensions. We are
2293 // assuming the invalid configs (with smaller dimens) have
2294 // already been filtered. Note that if a particular dimension
2295 // is unspecified, we will end up with a large value (the
2296 // difference between 0 and the requested dimension), which is
2297 // good since we will prefer a config that has specified a
2298 // dimension value.
2299 int myDelta = 0, otherDelta = 0;
2300 if (requested->screenWidthDp) {
2301 myDelta += requested->screenWidthDp - screenWidthDp;
2302 otherDelta += requested->screenWidthDp - o.screenWidthDp;
2303 }
2304 if (requested->screenHeightDp) {
2305 myDelta += requested->screenHeightDp - screenHeightDp;
2306 otherDelta += requested->screenHeightDp - o.screenHeightDp;
2307 }
2308 if (kDebugTableSuperNoisy) {
2309 ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2310 screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2311 requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2312 }
2313 if (myDelta != otherDelta) {
2314 return myDelta < otherDelta;
2315 }
2316 }
2317
2318 if (screenLayout || o.screenLayout) {
2319 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2320 && (requested->screenLayout & MASK_SCREENSIZE)) {
2321 // A little backwards compatibility here: undefined is
2322 // considered equivalent to normal. But only if the
2323 // requested size is at least normal; otherwise, small
2324 // is better than the default.
2325 int mySL = (screenLayout & MASK_SCREENSIZE);
2326 int oSL = (o.screenLayout & MASK_SCREENSIZE);
2327 int fixedMySL = mySL;
2328 int fixedOSL = oSL;
2329 if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2330 if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2331 if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2332 }
2333 // For screen size, the best match is the one that is
2334 // closest to the requested screen size, but not over
2335 // (the not over part is dealt with in match() below).
2336 if (fixedMySL == fixedOSL) {
2337 // If the two are the same, but 'this' is actually
2338 // undefined, then the other is really a better match.
2339 if (mySL == 0) return false;
2340 return true;
2341 }
2342 if (fixedMySL != fixedOSL) {
2343 return fixedMySL > fixedOSL;
2344 }
2345 }
2346 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2347 && (requested->screenLayout & MASK_SCREENLONG)) {
2348 return (screenLayout & MASK_SCREENLONG);
2349 }
2350 }
2351
2352 if (screenLayout2 || o.screenLayout2) {
2353 if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0 &&
2354 (requested->screenLayout2 & MASK_SCREENROUND)) {
2355 return screenLayout2 & MASK_SCREENROUND;
2356 }
2357 }
2358
2359 if ((orientation != o.orientation) && requested->orientation) {
2360 return (orientation);
2361 }
2362
2363 if (uiMode || o.uiMode) {
2364 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2365 && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2366 return (uiMode & MASK_UI_MODE_TYPE);
2367 }
2368 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2369 && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2370 return (uiMode & MASK_UI_MODE_NIGHT);
2371 }
2372 }
2373
2374 if (screenType || o.screenType) {
2375 if (density != o.density) {
2376 // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2377 const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2378 const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2379
2380 // We always prefer DENSITY_ANY over scaling a density bucket.
2381 if (thisDensity == ResTable_config::DENSITY_ANY) {
2382 return true;
2383 } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2384 return false;
2385 }
2386
2387 int requestedDensity = requested->density;
2388 if (requested->density == 0 ||
2389 requested->density == ResTable_config::DENSITY_ANY) {
2390 requestedDensity = ResTable_config::DENSITY_MEDIUM;
2391 }
2392
2393 // DENSITY_ANY is now dealt with. We should look to
2394 // pick a density bucket and potentially scale it.
2395 // Any density is potentially useful
2396 // because the system will scale it. Scaling down
2397 // is generally better than scaling up.
2398 int h = thisDensity;
2399 int l = otherDensity;
2400 bool bImBigger = true;
2401 if (l > h) {
2402 int t = h;
2403 h = l;
2404 l = t;
2405 bImBigger = false;
2406 }
2407
2408 if (requestedDensity >= h) {
2409 // requested value higher than both l and h, give h
2410 return bImBigger;
2411 }
2412 if (l >= requestedDensity) {
2413 // requested value lower than both l and h, give l
2414 return !bImBigger;
2415 }
2416 // saying that scaling down is 2x better than up
2417 if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2418 return !bImBigger;
2419 } else {
2420 return bImBigger;
2421 }
2422 }
2423
2424 if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2425 return (touchscreen);
2426 }
2427 }
2428
2429 if (input || o.input) {
2430 const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2431 const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2432 if (keysHidden != oKeysHidden) {
2433 const int reqKeysHidden =
2434 requested->inputFlags & MASK_KEYSHIDDEN;
2435 if (reqKeysHidden) {
2436
2437 if (!keysHidden) return false;
2438 if (!oKeysHidden) return true;
2439 // For compatibility, we count KEYSHIDDEN_NO as being
2440 // the same as KEYSHIDDEN_SOFT. Here we disambiguate
2441 // these by making an exact match more specific.
2442 if (reqKeysHidden == keysHidden) return true;
2443 if (reqKeysHidden == oKeysHidden) return false;
2444 }
2445 }
2446
2447 const int navHidden = inputFlags & MASK_NAVHIDDEN;
2448 const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2449 if (navHidden != oNavHidden) {
2450 const int reqNavHidden =
2451 requested->inputFlags & MASK_NAVHIDDEN;
2452 if (reqNavHidden) {
2453
2454 if (!navHidden) return false;
2455 if (!oNavHidden) return true;
2456 }
2457 }
2458
2459 if ((keyboard != o.keyboard) && requested->keyboard) {
2460 return (keyboard);
2461 }
2462
2463 if ((navigation != o.navigation) && requested->navigation) {
2464 return (navigation);
2465 }
2466 }
2467
2468 if (screenSize || o.screenSize) {
2469 // "Better" is based on the sum of the difference between both
2470 // width and height from the requested dimensions. We are
2471 // assuming the invalid configs (with smaller sizes) have
2472 // already been filtered. Note that if a particular dimension
2473 // is unspecified, we will end up with a large value (the
2474 // difference between 0 and the requested dimension), which is
2475 // good since we will prefer a config that has specified a
2476 // size value.
2477 int myDelta = 0, otherDelta = 0;
2478 if (requested->screenWidth) {
2479 myDelta += requested->screenWidth - screenWidth;
2480 otherDelta += requested->screenWidth - o.screenWidth;
2481 }
2482 if (requested->screenHeight) {
2483 myDelta += requested->screenHeight - screenHeight;
2484 otherDelta += requested->screenHeight - o.screenHeight;
2485 }
2486 if (myDelta != otherDelta) {
2487 return myDelta < otherDelta;
2488 }
2489 }
2490
2491 if (version || o.version) {
2492 if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2493 return (sdkVersion > o.sdkVersion);
2494 }
2495
2496 if ((minorVersion != o.minorVersion) &&
2497 requested->minorVersion) {
2498 return (minorVersion);
2499 }
2500 }
2501
2502 return false;
2503 }
2504 return isMoreSpecificThan(o);
2505 }
2506
match(const ResTable_config & settings) const2507 bool ResTable_config::match(const ResTable_config& settings) const {
2508 if (imsi != 0) {
2509 if (mcc != 0 && mcc != settings.mcc) {
2510 return false;
2511 }
2512 if (mnc != 0 && mnc != settings.mnc) {
2513 return false;
2514 }
2515 }
2516 if (locale != 0) {
2517 // Don't consider country and variants when deciding matches.
2518 // (Theoretically, the variant can also affect the script. For
2519 // example, "ar-alalc97" probably implies the Latin script, but since
2520 // CLDR doesn't support getting likely scripts for that, we'll assume
2521 // the variant doesn't change the script.)
2522 //
2523 // If two configs differ only in their country and variant,
2524 // they can be weeded out in the isMoreSpecificThan test.
2525 if (language[0] != settings.language[0] || language[1] != settings.language[1]) {
2526 return false;
2527 }
2528
2529 // For backward compatibility and supporting private-use locales, we
2530 // fall back to old behavior if we couldn't determine the script for
2531 // either of the desired locale or the provided locale. But if we could determine
2532 // the scripts, they should be the same for the locales to match.
2533 bool countriesMustMatch = false;
2534 char computed_script[4];
2535 const char* script;
2536 if (settings.localeScript[0] == '\0') { // could not determine the request's script
2537 countriesMustMatch = true;
2538 } else {
2539 if (localeScript[0] == '\0' && !localeScriptWasComputed) {
2540 // script was not provided or computed, so we try to compute it
2541 localeDataComputeScript(computed_script, language, country);
2542 if (computed_script[0] == '\0') { // we could not compute the script
2543 countriesMustMatch = true;
2544 } else {
2545 script = computed_script;
2546 }
2547 } else { // script was provided, so just use it
2548 script = localeScript;
2549 }
2550 }
2551
2552 if (countriesMustMatch) {
2553 if (country[0] != '\0'
2554 && (country[0] != settings.country[0]
2555 || country[1] != settings.country[1])) {
2556 return false;
2557 }
2558 } else {
2559 if (memcmp(script, settings.localeScript, sizeof(settings.localeScript)) != 0) {
2560 return false;
2561 }
2562 }
2563 }
2564
2565 if (screenConfig != 0) {
2566 const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2567 const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2568 if (layoutDir != 0 && layoutDir != setLayoutDir) {
2569 return false;
2570 }
2571
2572 const int screenSize = screenLayout&MASK_SCREENSIZE;
2573 const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2574 // Any screen sizes for larger screens than the setting do not
2575 // match.
2576 if (screenSize != 0 && screenSize > setScreenSize) {
2577 return false;
2578 }
2579
2580 const int screenLong = screenLayout&MASK_SCREENLONG;
2581 const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2582 if (screenLong != 0 && screenLong != setScreenLong) {
2583 return false;
2584 }
2585
2586 const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2587 const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2588 if (uiModeType != 0 && uiModeType != setUiModeType) {
2589 return false;
2590 }
2591
2592 const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2593 const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2594 if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2595 return false;
2596 }
2597
2598 if (smallestScreenWidthDp != 0
2599 && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2600 return false;
2601 }
2602 }
2603
2604 if (screenConfig2 != 0) {
2605 const int screenRound = screenLayout2 & MASK_SCREENROUND;
2606 const int setScreenRound = settings.screenLayout2 & MASK_SCREENROUND;
2607 if (screenRound != 0 && screenRound != setScreenRound) {
2608 return false;
2609 }
2610 }
2611
2612 if (screenSizeDp != 0) {
2613 if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2614 if (kDebugTableSuperNoisy) {
2615 ALOGI("Filtering out width %d in requested %d", screenWidthDp,
2616 settings.screenWidthDp);
2617 }
2618 return false;
2619 }
2620 if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2621 if (kDebugTableSuperNoisy) {
2622 ALOGI("Filtering out height %d in requested %d", screenHeightDp,
2623 settings.screenHeightDp);
2624 }
2625 return false;
2626 }
2627 }
2628 if (screenType != 0) {
2629 if (orientation != 0 && orientation != settings.orientation) {
2630 return false;
2631 }
2632 // density always matches - we can scale it. See isBetterThan
2633 if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2634 return false;
2635 }
2636 }
2637 if (input != 0) {
2638 const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2639 const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2640 if (keysHidden != 0 && keysHidden != setKeysHidden) {
2641 // For compatibility, we count a request for KEYSHIDDEN_NO as also
2642 // matching the more recent KEYSHIDDEN_SOFT. Basically
2643 // KEYSHIDDEN_NO means there is some kind of keyboard available.
2644 if (kDebugTableSuperNoisy) {
2645 ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2646 }
2647 if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2648 if (kDebugTableSuperNoisy) {
2649 ALOGI("No match!");
2650 }
2651 return false;
2652 }
2653 }
2654 const int navHidden = inputFlags&MASK_NAVHIDDEN;
2655 const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2656 if (navHidden != 0 && navHidden != setNavHidden) {
2657 return false;
2658 }
2659 if (keyboard != 0 && keyboard != settings.keyboard) {
2660 return false;
2661 }
2662 if (navigation != 0 && navigation != settings.navigation) {
2663 return false;
2664 }
2665 }
2666 if (screenSize != 0) {
2667 if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2668 return false;
2669 }
2670 if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2671 return false;
2672 }
2673 }
2674 if (version != 0) {
2675 if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2676 return false;
2677 }
2678 if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2679 return false;
2680 }
2681 }
2682 return true;
2683 }
2684
appendDirLocale(String8 & out) const2685 void ResTable_config::appendDirLocale(String8& out) const {
2686 if (!language[0]) {
2687 return;
2688 }
2689 const bool scriptWasProvided = localeScript[0] != '\0' && !localeScriptWasComputed;
2690 if (!scriptWasProvided && !localeVariant[0]) {
2691 // Legacy format.
2692 if (out.size() > 0) {
2693 out.append("-");
2694 }
2695
2696 char buf[4];
2697 size_t len = unpackLanguage(buf);
2698 out.append(buf, len);
2699
2700 if (country[0]) {
2701 out.append("-r");
2702 len = unpackRegion(buf);
2703 out.append(buf, len);
2704 }
2705 return;
2706 }
2707
2708 // We are writing the modified BCP 47 tag.
2709 // It starts with 'b+' and uses '+' as a separator.
2710
2711 if (out.size() > 0) {
2712 out.append("-");
2713 }
2714 out.append("b+");
2715
2716 char buf[4];
2717 size_t len = unpackLanguage(buf);
2718 out.append(buf, len);
2719
2720 if (scriptWasProvided) {
2721 out.append("+");
2722 out.append(localeScript, sizeof(localeScript));
2723 }
2724
2725 if (country[0]) {
2726 out.append("+");
2727 len = unpackRegion(buf);
2728 out.append(buf, len);
2729 }
2730
2731 if (localeVariant[0]) {
2732 out.append("+");
2733 out.append(localeVariant, strnlen(localeVariant, sizeof(localeVariant)));
2734 }
2735 }
2736
getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const2737 void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const {
2738 memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2739
2740 // This represents the "any" locale value, which has traditionally been
2741 // represented by the empty string.
2742 if (!language[0] && !country[0]) {
2743 return;
2744 }
2745
2746 size_t charsWritten = 0;
2747 if (language[0]) {
2748 charsWritten += unpackLanguage(str);
2749 }
2750
2751 if (localeScript[0] && !localeScriptWasComputed) {
2752 if (charsWritten) {
2753 str[charsWritten++] = '-';
2754 }
2755 memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2756 charsWritten += sizeof(localeScript);
2757 }
2758
2759 if (country[0]) {
2760 if (charsWritten) {
2761 str[charsWritten++] = '-';
2762 }
2763 charsWritten += unpackRegion(str + charsWritten);
2764 }
2765
2766 if (localeVariant[0]) {
2767 if (charsWritten) {
2768 str[charsWritten++] = '-';
2769 }
2770 memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2771 }
2772 }
2773
assignLocaleComponent(ResTable_config * config,const char * start,size_t size)2774 /* static */ inline bool assignLocaleComponent(ResTable_config* config,
2775 const char* start, size_t size) {
2776
2777 switch (size) {
2778 case 0:
2779 return false;
2780 case 2:
2781 case 3:
2782 config->language[0] ? config->packRegion(start) : config->packLanguage(start);
2783 break;
2784 case 4:
2785 if ('0' <= start[0] && start[0] <= '9') {
2786 // this is a variant, so fall through
2787 } else {
2788 config->localeScript[0] = toupper(start[0]);
2789 for (size_t i = 1; i < 4; ++i) {
2790 config->localeScript[i] = tolower(start[i]);
2791 }
2792 break;
2793 }
2794 case 5:
2795 case 6:
2796 case 7:
2797 case 8:
2798 for (size_t i = 0; i < size; ++i) {
2799 config->localeVariant[i] = tolower(start[i]);
2800 }
2801 break;
2802 default:
2803 return false;
2804 }
2805
2806 return true;
2807 }
2808
setBcp47Locale(const char * in)2809 void ResTable_config::setBcp47Locale(const char* in) {
2810 locale = 0;
2811 memset(localeScript, 0, sizeof(localeScript));
2812 memset(localeVariant, 0, sizeof(localeVariant));
2813
2814 const char* separator = in;
2815 const char* start = in;
2816 while ((separator = strchr(start, '-')) != NULL) {
2817 const size_t size = separator - start;
2818 if (!assignLocaleComponent(this, start, size)) {
2819 fprintf(stderr, "Invalid BCP-47 locale string: %s", in);
2820 }
2821
2822 start = (separator + 1);
2823 }
2824
2825 const size_t size = in + strlen(in) - start;
2826 assignLocaleComponent(this, start, size);
2827 localeScriptWasComputed = (localeScript[0] == '\0');
2828 if (localeScriptWasComputed) {
2829 computeScript();
2830 }
2831 }
2832
toString() const2833 String8 ResTable_config::toString() const {
2834 String8 res;
2835
2836 if (mcc != 0) {
2837 if (res.size() > 0) res.append("-");
2838 res.appendFormat("mcc%d", dtohs(mcc));
2839 }
2840 if (mnc != 0) {
2841 if (res.size() > 0) res.append("-");
2842 res.appendFormat("mnc%d", dtohs(mnc));
2843 }
2844
2845 appendDirLocale(res);
2846
2847 if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2848 if (res.size() > 0) res.append("-");
2849 switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2850 case ResTable_config::LAYOUTDIR_LTR:
2851 res.append("ldltr");
2852 break;
2853 case ResTable_config::LAYOUTDIR_RTL:
2854 res.append("ldrtl");
2855 break;
2856 default:
2857 res.appendFormat("layoutDir=%d",
2858 dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2859 break;
2860 }
2861 }
2862 if (smallestScreenWidthDp != 0) {
2863 if (res.size() > 0) res.append("-");
2864 res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2865 }
2866 if (screenWidthDp != 0) {
2867 if (res.size() > 0) res.append("-");
2868 res.appendFormat("w%ddp", dtohs(screenWidthDp));
2869 }
2870 if (screenHeightDp != 0) {
2871 if (res.size() > 0) res.append("-");
2872 res.appendFormat("h%ddp", dtohs(screenHeightDp));
2873 }
2874 if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2875 if (res.size() > 0) res.append("-");
2876 switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2877 case ResTable_config::SCREENSIZE_SMALL:
2878 res.append("small");
2879 break;
2880 case ResTable_config::SCREENSIZE_NORMAL:
2881 res.append("normal");
2882 break;
2883 case ResTable_config::SCREENSIZE_LARGE:
2884 res.append("large");
2885 break;
2886 case ResTable_config::SCREENSIZE_XLARGE:
2887 res.append("xlarge");
2888 break;
2889 default:
2890 res.appendFormat("screenLayoutSize=%d",
2891 dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2892 break;
2893 }
2894 }
2895 if ((screenLayout&MASK_SCREENLONG) != 0) {
2896 if (res.size() > 0) res.append("-");
2897 switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2898 case ResTable_config::SCREENLONG_NO:
2899 res.append("notlong");
2900 break;
2901 case ResTable_config::SCREENLONG_YES:
2902 res.append("long");
2903 break;
2904 default:
2905 res.appendFormat("screenLayoutLong=%d",
2906 dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2907 break;
2908 }
2909 }
2910 if ((screenLayout2&MASK_SCREENROUND) != 0) {
2911 if (res.size() > 0) res.append("-");
2912 switch (screenLayout2&MASK_SCREENROUND) {
2913 case SCREENROUND_NO:
2914 res.append("notround");
2915 break;
2916 case SCREENROUND_YES:
2917 res.append("round");
2918 break;
2919 default:
2920 res.appendFormat("screenRound=%d", dtohs(screenLayout2&MASK_SCREENROUND));
2921 break;
2922 }
2923 }
2924 if (orientation != ORIENTATION_ANY) {
2925 if (res.size() > 0) res.append("-");
2926 switch (orientation) {
2927 case ResTable_config::ORIENTATION_PORT:
2928 res.append("port");
2929 break;
2930 case ResTable_config::ORIENTATION_LAND:
2931 res.append("land");
2932 break;
2933 case ResTable_config::ORIENTATION_SQUARE:
2934 res.append("square");
2935 break;
2936 default:
2937 res.appendFormat("orientation=%d", dtohs(orientation));
2938 break;
2939 }
2940 }
2941 if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2942 if (res.size() > 0) res.append("-");
2943 switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2944 case ResTable_config::UI_MODE_TYPE_DESK:
2945 res.append("desk");
2946 break;
2947 case ResTable_config::UI_MODE_TYPE_CAR:
2948 res.append("car");
2949 break;
2950 case ResTable_config::UI_MODE_TYPE_TELEVISION:
2951 res.append("television");
2952 break;
2953 case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2954 res.append("appliance");
2955 break;
2956 case ResTable_config::UI_MODE_TYPE_WATCH:
2957 res.append("watch");
2958 break;
2959 default:
2960 res.appendFormat("uiModeType=%d",
2961 dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2962 break;
2963 }
2964 }
2965 if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2966 if (res.size() > 0) res.append("-");
2967 switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2968 case ResTable_config::UI_MODE_NIGHT_NO:
2969 res.append("notnight");
2970 break;
2971 case ResTable_config::UI_MODE_NIGHT_YES:
2972 res.append("night");
2973 break;
2974 default:
2975 res.appendFormat("uiModeNight=%d",
2976 dtohs(uiMode&MASK_UI_MODE_NIGHT));
2977 break;
2978 }
2979 }
2980 if (density != DENSITY_DEFAULT) {
2981 if (res.size() > 0) res.append("-");
2982 switch (density) {
2983 case ResTable_config::DENSITY_LOW:
2984 res.append("ldpi");
2985 break;
2986 case ResTable_config::DENSITY_MEDIUM:
2987 res.append("mdpi");
2988 break;
2989 case ResTable_config::DENSITY_TV:
2990 res.append("tvdpi");
2991 break;
2992 case ResTable_config::DENSITY_HIGH:
2993 res.append("hdpi");
2994 break;
2995 case ResTable_config::DENSITY_XHIGH:
2996 res.append("xhdpi");
2997 break;
2998 case ResTable_config::DENSITY_XXHIGH:
2999 res.append("xxhdpi");
3000 break;
3001 case ResTable_config::DENSITY_XXXHIGH:
3002 res.append("xxxhdpi");
3003 break;
3004 case ResTable_config::DENSITY_NONE:
3005 res.append("nodpi");
3006 break;
3007 case ResTable_config::DENSITY_ANY:
3008 res.append("anydpi");
3009 break;
3010 default:
3011 res.appendFormat("%ddpi", dtohs(density));
3012 break;
3013 }
3014 }
3015 if (touchscreen != TOUCHSCREEN_ANY) {
3016 if (res.size() > 0) res.append("-");
3017 switch (touchscreen) {
3018 case ResTable_config::TOUCHSCREEN_NOTOUCH:
3019 res.append("notouch");
3020 break;
3021 case ResTable_config::TOUCHSCREEN_FINGER:
3022 res.append("finger");
3023 break;
3024 case ResTable_config::TOUCHSCREEN_STYLUS:
3025 res.append("stylus");
3026 break;
3027 default:
3028 res.appendFormat("touchscreen=%d", dtohs(touchscreen));
3029 break;
3030 }
3031 }
3032 if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
3033 if (res.size() > 0) res.append("-");
3034 switch (inputFlags&MASK_KEYSHIDDEN) {
3035 case ResTable_config::KEYSHIDDEN_NO:
3036 res.append("keysexposed");
3037 break;
3038 case ResTable_config::KEYSHIDDEN_YES:
3039 res.append("keyshidden");
3040 break;
3041 case ResTable_config::KEYSHIDDEN_SOFT:
3042 res.append("keyssoft");
3043 break;
3044 }
3045 }
3046 if (keyboard != KEYBOARD_ANY) {
3047 if (res.size() > 0) res.append("-");
3048 switch (keyboard) {
3049 case ResTable_config::KEYBOARD_NOKEYS:
3050 res.append("nokeys");
3051 break;
3052 case ResTable_config::KEYBOARD_QWERTY:
3053 res.append("qwerty");
3054 break;
3055 case ResTable_config::KEYBOARD_12KEY:
3056 res.append("12key");
3057 break;
3058 default:
3059 res.appendFormat("keyboard=%d", dtohs(keyboard));
3060 break;
3061 }
3062 }
3063 if ((inputFlags&MASK_NAVHIDDEN) != 0) {
3064 if (res.size() > 0) res.append("-");
3065 switch (inputFlags&MASK_NAVHIDDEN) {
3066 case ResTable_config::NAVHIDDEN_NO:
3067 res.append("navexposed");
3068 break;
3069 case ResTable_config::NAVHIDDEN_YES:
3070 res.append("navhidden");
3071 break;
3072 default:
3073 res.appendFormat("inputFlagsNavHidden=%d",
3074 dtohs(inputFlags&MASK_NAVHIDDEN));
3075 break;
3076 }
3077 }
3078 if (navigation != NAVIGATION_ANY) {
3079 if (res.size() > 0) res.append("-");
3080 switch (navigation) {
3081 case ResTable_config::NAVIGATION_NONAV:
3082 res.append("nonav");
3083 break;
3084 case ResTable_config::NAVIGATION_DPAD:
3085 res.append("dpad");
3086 break;
3087 case ResTable_config::NAVIGATION_TRACKBALL:
3088 res.append("trackball");
3089 break;
3090 case ResTable_config::NAVIGATION_WHEEL:
3091 res.append("wheel");
3092 break;
3093 default:
3094 res.appendFormat("navigation=%d", dtohs(navigation));
3095 break;
3096 }
3097 }
3098 if (screenSize != 0) {
3099 if (res.size() > 0) res.append("-");
3100 res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
3101 }
3102 if (version != 0) {
3103 if (res.size() > 0) res.append("-");
3104 res.appendFormat("v%d", dtohs(sdkVersion));
3105 if (minorVersion != 0) {
3106 res.appendFormat(".%d", dtohs(minorVersion));
3107 }
3108 }
3109
3110 return res;
3111 }
3112
3113 // --------------------------------------------------------------------
3114 // --------------------------------------------------------------------
3115 // --------------------------------------------------------------------
3116
3117 struct ResTable::Header
3118 {
Headerandroid::ResTable::Header3119 Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
3120 resourceIDMap(NULL), resourceIDMapSize(0) { }
3121
~Headerandroid::ResTable::Header3122 ~Header()
3123 {
3124 free(resourceIDMap);
3125 }
3126
3127 const ResTable* const owner;
3128 void* ownedData;
3129 const ResTable_header* header;
3130 size_t size;
3131 const uint8_t* dataEnd;
3132 size_t index;
3133 int32_t cookie;
3134
3135 ResStringPool values;
3136 uint32_t* resourceIDMap;
3137 size_t resourceIDMapSize;
3138 };
3139
3140 struct ResTable::Entry {
3141 ResTable_config config;
3142 const ResTable_entry* entry;
3143 const ResTable_type* type;
3144 uint32_t specFlags;
3145 const Package* package;
3146
3147 StringPoolRef typeStr;
3148 StringPoolRef keyStr;
3149 };
3150
3151 struct ResTable::Type
3152 {
Typeandroid::ResTable::Type3153 Type(const Header* _header, const Package* _package, size_t count)
3154 : header(_header), package(_package), entryCount(count),
3155 typeSpec(NULL), typeSpecFlags(NULL) { }
3156 const Header* const header;
3157 const Package* const package;
3158 const size_t entryCount;
3159 const ResTable_typeSpec* typeSpec;
3160 const uint32_t* typeSpecFlags;
3161 IdmapEntries idmapEntries;
3162 Vector<const ResTable_type*> configs;
3163 };
3164
3165 struct ResTable::Package
3166 {
Packageandroid::ResTable::Package3167 Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
3168 : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
3169 if (dtohs(package->header.headerSize) == sizeof(package)) {
3170 // The package structure is the same size as the definition.
3171 // This means it contains the typeIdOffset field.
3172 typeIdOffset = package->typeIdOffset;
3173 }
3174 }
3175
3176 const ResTable* const owner;
3177 const Header* const header;
3178 const ResTable_package* const package;
3179
3180 ResStringPool typeStrings;
3181 ResStringPool keyStrings;
3182
3183 size_t typeIdOffset;
3184 };
3185
3186 // A group of objects describing a particular resource package.
3187 // The first in 'package' is always the root object (from the resource
3188 // table that defined the package); the ones after are skins on top of it.
3189 struct ResTable::PackageGroup
3190 {
PackageGroupandroid::ResTable::PackageGroup3191 PackageGroup(
3192 ResTable* _owner, const String16& _name, uint32_t _id,
3193 bool appAsLib, bool _isSystemAsset)
3194 : owner(_owner)
3195 , name(_name)
3196 , id(_id)
3197 , largestTypeId(0)
3198 , dynamicRefTable(static_cast<uint8_t>(_id), appAsLib)
3199 , isSystemAsset(_isSystemAsset)
3200 { }
3201
~PackageGroupandroid::ResTable::PackageGroup3202 ~PackageGroup() {
3203 clearBagCache();
3204 const size_t numTypes = types.size();
3205 for (size_t i = 0; i < numTypes; i++) {
3206 const TypeList& typeList = types[i];
3207 const size_t numInnerTypes = typeList.size();
3208 for (size_t j = 0; j < numInnerTypes; j++) {
3209 if (typeList[j]->package->owner == owner) {
3210 delete typeList[j];
3211 }
3212 }
3213 }
3214
3215 const size_t N = packages.size();
3216 for (size_t i=0; i<N; i++) {
3217 Package* pkg = packages[i];
3218 if (pkg->owner == owner) {
3219 delete pkg;
3220 }
3221 }
3222 }
3223
3224 /**
3225 * Clear all cache related data that depends on parameters/configuration.
3226 * This includes the bag caches and filtered types.
3227 */
clearBagCacheandroid::ResTable::PackageGroup3228 void clearBagCache() {
3229 for (size_t i = 0; i < typeCacheEntries.size(); i++) {
3230 if (kDebugTableNoisy) {
3231 printf("type=%zu\n", i);
3232 }
3233 const TypeList& typeList = types[i];
3234 if (!typeList.isEmpty()) {
3235 TypeCacheEntry& cacheEntry = typeCacheEntries.editItemAt(i);
3236
3237 // Reset the filtered configurations.
3238 cacheEntry.filteredConfigs.clear();
3239
3240 bag_set** typeBags = cacheEntry.cachedBags;
3241 if (kDebugTableNoisy) {
3242 printf("typeBags=%p\n", typeBags);
3243 }
3244
3245 if (typeBags) {
3246 const size_t N = typeList[0]->entryCount;
3247 if (kDebugTableNoisy) {
3248 printf("type->entryCount=%zu\n", N);
3249 }
3250 for (size_t j = 0; j < N; j++) {
3251 if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF) {
3252 free(typeBags[j]);
3253 }
3254 }
3255 free(typeBags);
3256 cacheEntry.cachedBags = NULL;
3257 }
3258 }
3259 }
3260 }
3261
findType16android::ResTable::PackageGroup3262 ssize_t findType16(const char16_t* type, size_t len) const {
3263 const size_t N = packages.size();
3264 for (size_t i = 0; i < N; i++) {
3265 ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
3266 if (index >= 0) {
3267 return index + packages[i]->typeIdOffset;
3268 }
3269 }
3270 return -1;
3271 }
3272
3273 const ResTable* const owner;
3274 String16 const name;
3275 uint32_t const id;
3276
3277 // This is mainly used to keep track of the loaded packages
3278 // and to clean them up properly. Accessing resources happens from
3279 // the 'types' array.
3280 Vector<Package*> packages;
3281
3282 ByteBucketArray<TypeList> types;
3283
3284 uint8_t largestTypeId;
3285
3286 // Cached objects dependent on the parameters/configuration of this ResTable.
3287 // Gets cleared whenever the parameters/configuration changes.
3288 // These are stored here in a parallel structure because the data in `types` may
3289 // be shared by other ResTable's (framework resources are shared this way).
3290 ByteBucketArray<TypeCacheEntry> typeCacheEntries;
3291
3292 // The table mapping dynamic references to resolved references for
3293 // this package group.
3294 // TODO: We may be able to support dynamic references in overlays
3295 // by having these tables in a per-package scope rather than
3296 // per-package-group.
3297 DynamicRefTable dynamicRefTable;
3298
3299 // If the package group comes from a system asset. Used in
3300 // determining non-system locales.
3301 const bool isSystemAsset;
3302 };
3303
Theme(const ResTable & table)3304 ResTable::Theme::Theme(const ResTable& table)
3305 : mTable(table)
3306 , mTypeSpecFlags(0)
3307 {
3308 memset(mPackages, 0, sizeof(mPackages));
3309 }
3310
~Theme()3311 ResTable::Theme::~Theme()
3312 {
3313 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3314 package_info* pi = mPackages[i];
3315 if (pi != NULL) {
3316 free_package(pi);
3317 }
3318 }
3319 }
3320
free_package(package_info * pi)3321 void ResTable::Theme::free_package(package_info* pi)
3322 {
3323 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3324 theme_entry* te = pi->types[j].entries;
3325 if (te != NULL) {
3326 free(te);
3327 }
3328 }
3329 free(pi);
3330 }
3331
copy_package(package_info * pi)3332 ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3333 {
3334 package_info* newpi = (package_info*)malloc(sizeof(package_info));
3335 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3336 size_t cnt = pi->types[j].numEntries;
3337 newpi->types[j].numEntries = cnt;
3338 theme_entry* te = pi->types[j].entries;
3339 size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3340 if (te != NULL && (cnt < 0xFFFFFFFF-1) && (cnt < cnt_max)) {
3341 theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3342 newpi->types[j].entries = newte;
3343 memcpy(newte, te, cnt*sizeof(theme_entry));
3344 } else {
3345 newpi->types[j].entries = NULL;
3346 }
3347 }
3348 return newpi;
3349 }
3350
applyStyle(uint32_t resID,bool force)3351 status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3352 {
3353 const bag_entry* bag;
3354 uint32_t bagTypeSpecFlags = 0;
3355 mTable.lock();
3356 const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3357 if (kDebugTableNoisy) {
3358 ALOGV("Applying style 0x%08x to theme %p, count=%zu", resID, this, N);
3359 }
3360 if (N < 0) {
3361 mTable.unlock();
3362 return N;
3363 }
3364
3365 mTypeSpecFlags |= bagTypeSpecFlags;
3366
3367 uint32_t curPackage = 0xffffffff;
3368 ssize_t curPackageIndex = 0;
3369 package_info* curPI = NULL;
3370 uint32_t curType = 0xffffffff;
3371 size_t numEntries = 0;
3372 theme_entry* curEntries = NULL;
3373
3374 const bag_entry* end = bag + N;
3375 while (bag < end) {
3376 const uint32_t attrRes = bag->map.name.ident;
3377 const uint32_t p = Res_GETPACKAGE(attrRes);
3378 const uint32_t t = Res_GETTYPE(attrRes);
3379 const uint32_t e = Res_GETENTRY(attrRes);
3380
3381 if (curPackage != p) {
3382 const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3383 if (pidx < 0) {
3384 ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3385 bag++;
3386 continue;
3387 }
3388 curPackage = p;
3389 curPackageIndex = pidx;
3390 curPI = mPackages[pidx];
3391 if (curPI == NULL) {
3392 curPI = (package_info*)malloc(sizeof(package_info));
3393 memset(curPI, 0, sizeof(*curPI));
3394 mPackages[pidx] = curPI;
3395 }
3396 curType = 0xffffffff;
3397 }
3398 if (curType != t) {
3399 if (t > Res_MAXTYPE) {
3400 ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3401 bag++;
3402 continue;
3403 }
3404 curType = t;
3405 curEntries = curPI->types[t].entries;
3406 if (curEntries == NULL) {
3407 PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3408 const TypeList& typeList = grp->types[t];
3409 size_t cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3410 size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3411 size_t buff_size = (cnt < cnt_max && cnt < 0xFFFFFFFF-1) ?
3412 cnt*sizeof(theme_entry) : 0;
3413 curEntries = (theme_entry*)malloc(buff_size);
3414 memset(curEntries, Res_value::TYPE_NULL, buff_size);
3415 curPI->types[t].numEntries = cnt;
3416 curPI->types[t].entries = curEntries;
3417 }
3418 numEntries = curPI->types[t].numEntries;
3419 }
3420 if (e >= numEntries) {
3421 ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3422 bag++;
3423 continue;
3424 }
3425 theme_entry* curEntry = curEntries + e;
3426 if (kDebugTableNoisy) {
3427 ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3428 attrRes, bag->map.value.dataType, bag->map.value.data,
3429 curEntry->value.dataType);
3430 }
3431 if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
3432 curEntry->stringBlock = bag->stringBlock;
3433 curEntry->typeSpecFlags |= bagTypeSpecFlags;
3434 curEntry->value = bag->map.value;
3435 }
3436
3437 bag++;
3438 }
3439
3440 mTable.unlock();
3441
3442 if (kDebugTableTheme) {
3443 ALOGI("Applying style 0x%08x (force=%d) theme %p...\n", resID, force, this);
3444 dumpToLog();
3445 }
3446
3447 return NO_ERROR;
3448 }
3449
setTo(const Theme & other)3450 status_t ResTable::Theme::setTo(const Theme& other)
3451 {
3452 if (kDebugTableTheme) {
3453 ALOGI("Setting theme %p from theme %p...\n", this, &other);
3454 dumpToLog();
3455 other.dumpToLog();
3456 }
3457
3458 if (&mTable == &other.mTable) {
3459 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3460 if (mPackages[i] != NULL) {
3461 free_package(mPackages[i]);
3462 }
3463 if (other.mPackages[i] != NULL) {
3464 mPackages[i] = copy_package(other.mPackages[i]);
3465 } else {
3466 mPackages[i] = NULL;
3467 }
3468 }
3469 } else {
3470 // @todo: need to really implement this, not just copy
3471 // the system package (which is still wrong because it isn't
3472 // fixing up resource references).
3473 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3474 if (mPackages[i] != NULL) {
3475 free_package(mPackages[i]);
3476 }
3477 if (i == 0 && other.mPackages[i] != NULL) {
3478 mPackages[i] = copy_package(other.mPackages[i]);
3479 } else {
3480 mPackages[i] = NULL;
3481 }
3482 }
3483 }
3484
3485 mTypeSpecFlags = other.mTypeSpecFlags;
3486
3487 if (kDebugTableTheme) {
3488 ALOGI("Final theme:");
3489 dumpToLog();
3490 }
3491
3492 return NO_ERROR;
3493 }
3494
clear()3495 status_t ResTable::Theme::clear()
3496 {
3497 if (kDebugTableTheme) {
3498 ALOGI("Clearing theme %p...\n", this);
3499 dumpToLog();
3500 }
3501
3502 for (size_t i = 0; i < Res_MAXPACKAGE; i++) {
3503 if (mPackages[i] != NULL) {
3504 free_package(mPackages[i]);
3505 mPackages[i] = NULL;
3506 }
3507 }
3508
3509 mTypeSpecFlags = 0;
3510
3511 if (kDebugTableTheme) {
3512 ALOGI("Final theme:");
3513 dumpToLog();
3514 }
3515
3516 return NO_ERROR;
3517 }
3518
getAttribute(uint32_t resID,Res_value * outValue,uint32_t * outTypeSpecFlags) const3519 ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3520 uint32_t* outTypeSpecFlags) const
3521 {
3522 int cnt = 20;
3523
3524 if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3525
3526 do {
3527 const ssize_t p = mTable.getResourcePackageIndex(resID);
3528 const uint32_t t = Res_GETTYPE(resID);
3529 const uint32_t e = Res_GETENTRY(resID);
3530
3531 if (kDebugTableTheme) {
3532 ALOGI("Looking up attr 0x%08x in theme %p", resID, this);
3533 }
3534
3535 if (p >= 0) {
3536 const package_info* const pi = mPackages[p];
3537 if (kDebugTableTheme) {
3538 ALOGI("Found package: %p", pi);
3539 }
3540 if (pi != NULL) {
3541 if (kDebugTableTheme) {
3542 ALOGI("Desired type index is %zd in avail %zu", t, Res_MAXTYPE + 1);
3543 }
3544 if (t <= Res_MAXTYPE) {
3545 const type_info& ti = pi->types[t];
3546 if (kDebugTableTheme) {
3547 ALOGI("Desired entry index is %u in avail %zu", e, ti.numEntries);
3548 }
3549 if (e < ti.numEntries) {
3550 const theme_entry& te = ti.entries[e];
3551 if (outTypeSpecFlags != NULL) {
3552 *outTypeSpecFlags |= te.typeSpecFlags;
3553 }
3554 if (kDebugTableTheme) {
3555 ALOGI("Theme value: type=0x%x, data=0x%08x",
3556 te.value.dataType, te.value.data);
3557 }
3558 const uint8_t type = te.value.dataType;
3559 if (type == Res_value::TYPE_ATTRIBUTE) {
3560 if (cnt > 0) {
3561 cnt--;
3562 resID = te.value.data;
3563 continue;
3564 }
3565 ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3566 return BAD_INDEX;
3567 } else if (type != Res_value::TYPE_NULL) {
3568 *outValue = te.value;
3569 return te.stringBlock;
3570 }
3571 return BAD_INDEX;
3572 }
3573 }
3574 }
3575 }
3576 break;
3577
3578 } while (true);
3579
3580 return BAD_INDEX;
3581 }
3582
resolveAttributeReference(Res_value * inOutValue,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * inoutConfig) const3583 ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3584 ssize_t blockIndex, uint32_t* outLastRef,
3585 uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3586 {
3587 //printf("Resolving type=0x%x\n", inOutValue->dataType);
3588 if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3589 uint32_t newTypeSpecFlags;
3590 blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3591 if (kDebugTableTheme) {
3592 ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=0x%x\n",
3593 (int)blockIndex, (int)inOutValue->dataType, inOutValue->data);
3594 }
3595 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3596 //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3597 if (blockIndex < 0) {
3598 return blockIndex;
3599 }
3600 }
3601 return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3602 inoutTypeSpecFlags, inoutConfig);
3603 }
3604
getChangingConfigurations() const3605 uint32_t ResTable::Theme::getChangingConfigurations() const
3606 {
3607 return mTypeSpecFlags;
3608 }
3609
dumpToLog() const3610 void ResTable::Theme::dumpToLog() const
3611 {
3612 ALOGI("Theme %p:\n", this);
3613 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3614 package_info* pi = mPackages[i];
3615 if (pi == NULL) continue;
3616
3617 ALOGI(" Package #0x%02x:\n", (int)(i + 1));
3618 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3619 type_info& ti = pi->types[j];
3620 if (ti.numEntries == 0) continue;
3621 ALOGI(" Type #0x%02x:\n", (int)(j + 1));
3622 for (size_t k = 0; k < ti.numEntries; k++) {
3623 const theme_entry& te = ti.entries[k];
3624 if (te.value.dataType == Res_value::TYPE_NULL) continue;
3625 ALOGI(" 0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3626 (int)Res_MAKEID(i, j, k),
3627 te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3628 }
3629 }
3630 }
3631 }
3632
ResTable()3633 ResTable::ResTable()
3634 : mError(NO_INIT), mNextPackageId(2)
3635 {
3636 memset(&mParams, 0, sizeof(mParams));
3637 memset(mPackageMap, 0, sizeof(mPackageMap));
3638 if (kDebugTableSuperNoisy) {
3639 ALOGI("Creating ResTable %p\n", this);
3640 }
3641 }
3642
ResTable(const void * data,size_t size,const int32_t cookie,bool copyData)3643 ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3644 : mError(NO_INIT), mNextPackageId(2)
3645 {
3646 memset(&mParams, 0, sizeof(mParams));
3647 memset(mPackageMap, 0, sizeof(mPackageMap));
3648 addInternal(data, size, NULL, 0, false, cookie, copyData);
3649 LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3650 if (kDebugTableSuperNoisy) {
3651 ALOGI("Creating ResTable %p\n", this);
3652 }
3653 }
3654
~ResTable()3655 ResTable::~ResTable()
3656 {
3657 if (kDebugTableSuperNoisy) {
3658 ALOGI("Destroying ResTable in %p\n", this);
3659 }
3660 uninit();
3661 }
3662
getResourcePackageIndex(uint32_t resID) const3663 inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3664 {
3665 return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3666 }
3667
add(const void * data,size_t size,const int32_t cookie,bool copyData)3668 status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3669 return addInternal(data, size, NULL, 0, false, cookie, copyData);
3670 }
3671
add(const void * data,size_t size,const void * idmapData,size_t idmapDataSize,const int32_t cookie,bool copyData,bool appAsLib)3672 status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3673 const int32_t cookie, bool copyData, bool appAsLib) {
3674 return addInternal(data, size, idmapData, idmapDataSize, appAsLib, cookie, copyData);
3675 }
3676
add(Asset * asset,const int32_t cookie,bool copyData)3677 status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
3678 const void* data = asset->getBuffer(true);
3679 if (data == NULL) {
3680 ALOGW("Unable to get buffer of resource asset file");
3681 return UNKNOWN_ERROR;
3682 }
3683
3684 return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, false, 0, cookie,
3685 copyData);
3686 }
3687
add(Asset * asset,Asset * idmapAsset,const int32_t cookie,bool copyData,bool appAsLib,bool isSystemAsset)3688 status_t ResTable::add(
3689 Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData,
3690 bool appAsLib, bool isSystemAsset) {
3691 const void* data = asset->getBuffer(true);
3692 if (data == NULL) {
3693 ALOGW("Unable to get buffer of resource asset file");
3694 return UNKNOWN_ERROR;
3695 }
3696
3697 size_t idmapSize = 0;
3698 const void* idmapData = NULL;
3699 if (idmapAsset != NULL) {
3700 idmapData = idmapAsset->getBuffer(true);
3701 if (idmapData == NULL) {
3702 ALOGW("Unable to get buffer of idmap asset file");
3703 return UNKNOWN_ERROR;
3704 }
3705 idmapSize = static_cast<size_t>(idmapAsset->getLength());
3706 }
3707
3708 return addInternal(data, static_cast<size_t>(asset->getLength()),
3709 idmapData, idmapSize, appAsLib, cookie, copyData, isSystemAsset);
3710 }
3711
add(ResTable * src,bool isSystemAsset)3712 status_t ResTable::add(ResTable* src, bool isSystemAsset)
3713 {
3714 mError = src->mError;
3715
3716 for (size_t i=0; i < src->mHeaders.size(); i++) {
3717 mHeaders.add(src->mHeaders[i]);
3718 }
3719
3720 for (size_t i=0; i < src->mPackageGroups.size(); i++) {
3721 PackageGroup* srcPg = src->mPackageGroups[i];
3722 PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id,
3723 false /* appAsLib */, isSystemAsset || srcPg->isSystemAsset);
3724 for (size_t j=0; j<srcPg->packages.size(); j++) {
3725 pg->packages.add(srcPg->packages[j]);
3726 }
3727
3728 for (size_t j = 0; j < srcPg->types.size(); j++) {
3729 if (srcPg->types[j].isEmpty()) {
3730 continue;
3731 }
3732
3733 TypeList& typeList = pg->types.editItemAt(j);
3734 typeList.appendVector(srcPg->types[j]);
3735 }
3736 pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
3737 pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
3738 mPackageGroups.add(pg);
3739 }
3740
3741 memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
3742
3743 return mError;
3744 }
3745
addEmpty(const int32_t cookie)3746 status_t ResTable::addEmpty(const int32_t cookie) {
3747 Header* header = new Header(this);
3748 header->index = mHeaders.size();
3749 header->cookie = cookie;
3750 header->values.setToEmpty();
3751 header->ownedData = calloc(1, sizeof(ResTable_header));
3752
3753 ResTable_header* resHeader = (ResTable_header*) header->ownedData;
3754 resHeader->header.type = RES_TABLE_TYPE;
3755 resHeader->header.headerSize = sizeof(ResTable_header);
3756 resHeader->header.size = sizeof(ResTable_header);
3757
3758 header->header = (const ResTable_header*) resHeader;
3759 mHeaders.add(header);
3760 return (mError=NO_ERROR);
3761 }
3762
addInternal(const void * data,size_t dataSize,const void * idmapData,size_t idmapDataSize,bool appAsLib,const int32_t cookie,bool copyData,bool isSystemAsset)3763 status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
3764 bool appAsLib, const int32_t cookie, bool copyData, bool isSystemAsset)
3765 {
3766 if (!data) {
3767 return NO_ERROR;
3768 }
3769
3770 if (dataSize < sizeof(ResTable_header)) {
3771 ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
3772 (int) dataSize, (int) sizeof(ResTable_header));
3773 return UNKNOWN_ERROR;
3774 }
3775
3776 Header* header = new Header(this);
3777 header->index = mHeaders.size();
3778 header->cookie = cookie;
3779 if (idmapData != NULL) {
3780 header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
3781 if (header->resourceIDMap == NULL) {
3782 delete header;
3783 return (mError = NO_MEMORY);
3784 }
3785 memcpy(header->resourceIDMap, idmapData, idmapDataSize);
3786 header->resourceIDMapSize = idmapDataSize;
3787 }
3788 mHeaders.add(header);
3789
3790 const bool notDeviceEndian = htods(0xf0) != 0xf0;
3791
3792 if (kDebugLoadTableNoisy) {
3793 ALOGV("Adding resources to ResTable: data=%p, size=%zu, cookie=%d, copy=%d "
3794 "idmap=%p\n", data, dataSize, cookie, copyData, idmapData);
3795 }
3796
3797 if (copyData || notDeviceEndian) {
3798 header->ownedData = malloc(dataSize);
3799 if (header->ownedData == NULL) {
3800 return (mError=NO_MEMORY);
3801 }
3802 memcpy(header->ownedData, data, dataSize);
3803 data = header->ownedData;
3804 }
3805
3806 header->header = (const ResTable_header*)data;
3807 header->size = dtohl(header->header->header.size);
3808 if (kDebugLoadTableSuperNoisy) {
3809 ALOGI("Got size %zu, again size 0x%x, raw size 0x%x\n", header->size,
3810 dtohl(header->header->header.size), header->header->header.size);
3811 }
3812 if (kDebugLoadTableNoisy) {
3813 ALOGV("Loading ResTable @%p:\n", header->header);
3814 }
3815 if (dtohs(header->header->header.headerSize) > header->size
3816 || header->size > dataSize) {
3817 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
3818 (int)dtohs(header->header->header.headerSize),
3819 (int)header->size, (int)dataSize);
3820 return (mError=BAD_TYPE);
3821 }
3822 if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
3823 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
3824 (int)dtohs(header->header->header.headerSize),
3825 (int)header->size);
3826 return (mError=BAD_TYPE);
3827 }
3828 header->dataEnd = ((const uint8_t*)header->header) + header->size;
3829
3830 // Iterate through all chunks.
3831 size_t curPackage = 0;
3832
3833 const ResChunk_header* chunk =
3834 (const ResChunk_header*)(((const uint8_t*)header->header)
3835 + dtohs(header->header->header.headerSize));
3836 while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
3837 ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
3838 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
3839 if (err != NO_ERROR) {
3840 return (mError=err);
3841 }
3842 if (kDebugTableNoisy) {
3843 ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
3844 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
3845 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3846 }
3847 const size_t csize = dtohl(chunk->size);
3848 const uint16_t ctype = dtohs(chunk->type);
3849 if (ctype == RES_STRING_POOL_TYPE) {
3850 if (header->values.getError() != NO_ERROR) {
3851 // Only use the first string chunk; ignore any others that
3852 // may appear.
3853 status_t err = header->values.setTo(chunk, csize);
3854 if (err != NO_ERROR) {
3855 return (mError=err);
3856 }
3857 } else {
3858 ALOGW("Multiple string chunks found in resource table.");
3859 }
3860 } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
3861 if (curPackage >= dtohl(header->header->packageCount)) {
3862 ALOGW("More package chunks were found than the %d declared in the header.",
3863 dtohl(header->header->packageCount));
3864 return (mError=BAD_TYPE);
3865 }
3866
3867 if (parsePackage(
3868 (ResTable_package*)chunk, header, appAsLib, isSystemAsset) != NO_ERROR) {
3869 return mError;
3870 }
3871 curPackage++;
3872 } else {
3873 ALOGW("Unknown chunk type 0x%x in table at %p.\n",
3874 ctype,
3875 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3876 }
3877 chunk = (const ResChunk_header*)
3878 (((const uint8_t*)chunk) + csize);
3879 }
3880
3881 if (curPackage < dtohl(header->header->packageCount)) {
3882 ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
3883 (int)curPackage, dtohl(header->header->packageCount));
3884 return (mError=BAD_TYPE);
3885 }
3886 mError = header->values.getError();
3887 if (mError != NO_ERROR) {
3888 ALOGW("No string values found in resource table!");
3889 }
3890
3891 if (kDebugTableNoisy) {
3892 ALOGV("Returning from add with mError=%d\n", mError);
3893 }
3894 return mError;
3895 }
3896
getError() const3897 status_t ResTable::getError() const
3898 {
3899 return mError;
3900 }
3901
uninit()3902 void ResTable::uninit()
3903 {
3904 mError = NO_INIT;
3905 size_t N = mPackageGroups.size();
3906 for (size_t i=0; i<N; i++) {
3907 PackageGroup* g = mPackageGroups[i];
3908 delete g;
3909 }
3910 N = mHeaders.size();
3911 for (size_t i=0; i<N; i++) {
3912 Header* header = mHeaders[i];
3913 if (header->owner == this) {
3914 if (header->ownedData) {
3915 free(header->ownedData);
3916 }
3917 delete header;
3918 }
3919 }
3920
3921 mPackageGroups.clear();
3922 mHeaders.clear();
3923 }
3924
getResourceName(uint32_t resID,bool allowUtf8,resource_name * outName) const3925 bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
3926 {
3927 if (mError != NO_ERROR) {
3928 return false;
3929 }
3930
3931 const ssize_t p = getResourcePackageIndex(resID);
3932 const int t = Res_GETTYPE(resID);
3933 const int e = Res_GETENTRY(resID);
3934
3935 if (p < 0) {
3936 if (Res_GETPACKAGE(resID)+1 == 0) {
3937 ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
3938 } else {
3939 #ifndef STATIC_ANDROIDFW_FOR_TOOLS
3940 ALOGW("No known package when getting name for resource number 0x%08x", resID);
3941 #endif
3942 }
3943 return false;
3944 }
3945 if (t < 0) {
3946 ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
3947 return false;
3948 }
3949
3950 const PackageGroup* const grp = mPackageGroups[p];
3951 if (grp == NULL) {
3952 ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
3953 return false;
3954 }
3955
3956 Entry entry;
3957 status_t err = getEntry(grp, t, e, NULL, &entry);
3958 if (err != NO_ERROR) {
3959 return false;
3960 }
3961
3962 outName->package = grp->name.string();
3963 outName->packageLen = grp->name.size();
3964 if (allowUtf8) {
3965 outName->type8 = entry.typeStr.string8(&outName->typeLen);
3966 outName->name8 = entry.keyStr.string8(&outName->nameLen);
3967 } else {
3968 outName->type8 = NULL;
3969 outName->name8 = NULL;
3970 }
3971 if (outName->type8 == NULL) {
3972 outName->type = entry.typeStr.string16(&outName->typeLen);
3973 // If we have a bad index for some reason, we should abort.
3974 if (outName->type == NULL) {
3975 return false;
3976 }
3977 }
3978 if (outName->name8 == NULL) {
3979 outName->name = entry.keyStr.string16(&outName->nameLen);
3980 // If we have a bad index for some reason, we should abort.
3981 if (outName->name == NULL) {
3982 return false;
3983 }
3984 }
3985
3986 return true;
3987 }
3988
getResource(uint32_t resID,Res_value * outValue,bool mayBeBag,uint16_t density,uint32_t * outSpecFlags,ResTable_config * outConfig) const3989 ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
3990 uint32_t* outSpecFlags, ResTable_config* outConfig) const
3991 {
3992 if (mError != NO_ERROR) {
3993 return mError;
3994 }
3995
3996 const ssize_t p = getResourcePackageIndex(resID);
3997 const int t = Res_GETTYPE(resID);
3998 const int e = Res_GETENTRY(resID);
3999
4000 if (p < 0) {
4001 if (Res_GETPACKAGE(resID)+1 == 0) {
4002 ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
4003 } else {
4004 ALOGW("No known package when getting value for resource number 0x%08x", resID);
4005 }
4006 return BAD_INDEX;
4007 }
4008 if (t < 0) {
4009 ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
4010 return BAD_INDEX;
4011 }
4012
4013 const PackageGroup* const grp = mPackageGroups[p];
4014 if (grp == NULL) {
4015 ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
4016 return BAD_INDEX;
4017 }
4018
4019 // Allow overriding density
4020 ResTable_config desiredConfig = mParams;
4021 if (density > 0) {
4022 desiredConfig.density = density;
4023 }
4024
4025 Entry entry;
4026 status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
4027 if (err != NO_ERROR) {
4028 // Only log the failure when we're not running on the host as
4029 // part of a tool. The caller will do its own logging.
4030 #ifndef STATIC_ANDROIDFW_FOR_TOOLS
4031 ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
4032 resID, t, e, err);
4033 #endif
4034 return err;
4035 }
4036
4037 if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
4038 if (!mayBeBag) {
4039 ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
4040 }
4041 return BAD_VALUE;
4042 }
4043
4044 const Res_value* value = reinterpret_cast<const Res_value*>(
4045 reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
4046
4047 outValue->size = dtohs(value->size);
4048 outValue->res0 = value->res0;
4049 outValue->dataType = value->dataType;
4050 outValue->data = dtohl(value->data);
4051
4052 // The reference may be pointing to a resource in a shared library. These
4053 // references have build-time generated package IDs. These ids may not match
4054 // the actual package IDs of the corresponding packages in this ResTable.
4055 // We need to fix the package ID based on a mapping.
4056 if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
4057 ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
4058 return BAD_VALUE;
4059 }
4060
4061 if (kDebugTableNoisy) {
4062 size_t len;
4063 printf("Found value: pkg=%zu, type=%d, str=%s, int=%d\n",
4064 entry.package->header->index,
4065 outValue->dataType,
4066 outValue->dataType == Res_value::TYPE_STRING ?
4067 String8(entry.package->header->values.stringAt(outValue->data, &len)).string() :
4068 "",
4069 outValue->data);
4070 }
4071
4072 if (outSpecFlags != NULL) {
4073 *outSpecFlags = entry.specFlags;
4074 }
4075
4076 if (outConfig != NULL) {
4077 *outConfig = entry.config;
4078 }
4079
4080 return entry.package->header->index;
4081 }
4082
resolveReference(Res_value * value,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * outConfig) const4083 ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
4084 uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
4085 ResTable_config* outConfig) const
4086 {
4087 int count=0;
4088 while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
4089 && value->data != 0 && count < 20) {
4090 if (outLastRef) *outLastRef = value->data;
4091 uint32_t newFlags = 0;
4092 const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
4093 outConfig);
4094 if (newIndex == BAD_INDEX) {
4095 return BAD_INDEX;
4096 }
4097 if (kDebugTableTheme) {
4098 ALOGI("Resolving reference 0x%x: newIndex=%d, type=0x%x, data=0x%x\n",
4099 value->data, (int)newIndex, (int)value->dataType, value->data);
4100 }
4101 //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
4102 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
4103 if (newIndex < 0) {
4104 // This can fail if the resource being referenced is a style...
4105 // in this case, just return the reference, and expect the
4106 // caller to deal with.
4107 return blockIndex;
4108 }
4109 blockIndex = newIndex;
4110 count++;
4111 }
4112 return blockIndex;
4113 }
4114
valueToString(const Res_value * value,size_t stringBlock,char16_t[TMP_BUFFER_SIZE],size_t * outLen) const4115 const char16_t* ResTable::valueToString(
4116 const Res_value* value, size_t stringBlock,
4117 char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
4118 {
4119 if (!value) {
4120 return NULL;
4121 }
4122 if (value->dataType == value->TYPE_STRING) {
4123 return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
4124 }
4125 // XXX do int to string conversions.
4126 return NULL;
4127 }
4128
lockBag(uint32_t resID,const bag_entry ** outBag) const4129 ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
4130 {
4131 mLock.lock();
4132 ssize_t err = getBagLocked(resID, outBag);
4133 if (err < NO_ERROR) {
4134 //printf("*** get failed! unlocking\n");
4135 mLock.unlock();
4136 }
4137 return err;
4138 }
4139
unlockBag(const bag_entry *) const4140 void ResTable::unlockBag(const bag_entry* /*bag*/) const
4141 {
4142 //printf("<<< unlockBag %p\n", this);
4143 mLock.unlock();
4144 }
4145
lock() const4146 void ResTable::lock() const
4147 {
4148 mLock.lock();
4149 }
4150
unlock() const4151 void ResTable::unlock() const
4152 {
4153 mLock.unlock();
4154 }
4155
getBagLocked(uint32_t resID,const bag_entry ** outBag,uint32_t * outTypeSpecFlags) const4156 ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
4157 uint32_t* outTypeSpecFlags) const
4158 {
4159 if (mError != NO_ERROR) {
4160 return mError;
4161 }
4162
4163 const ssize_t p = getResourcePackageIndex(resID);
4164 const int t = Res_GETTYPE(resID);
4165 const int e = Res_GETENTRY(resID);
4166
4167 if (p < 0) {
4168 ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
4169 return BAD_INDEX;
4170 }
4171 if (t < 0) {
4172 ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
4173 return BAD_INDEX;
4174 }
4175
4176 //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
4177 PackageGroup* const grp = mPackageGroups[p];
4178 if (grp == NULL) {
4179 ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
4180 return BAD_INDEX;
4181 }
4182
4183 const TypeList& typeConfigs = grp->types[t];
4184 if (typeConfigs.isEmpty()) {
4185 ALOGW("Type identifier 0x%x does not exist.", t+1);
4186 return BAD_INDEX;
4187 }
4188
4189 const size_t NENTRY = typeConfigs[0]->entryCount;
4190 if (e >= (int)NENTRY) {
4191 ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
4192 e, (int)typeConfigs[0]->entryCount);
4193 return BAD_INDEX;
4194 }
4195
4196 // First see if we've already computed this bag...
4197 TypeCacheEntry& cacheEntry = grp->typeCacheEntries.editItemAt(t);
4198 bag_set** typeSet = cacheEntry.cachedBags;
4199 if (typeSet) {
4200 bag_set* set = typeSet[e];
4201 if (set) {
4202 if (set != (bag_set*)0xFFFFFFFF) {
4203 if (outTypeSpecFlags != NULL) {
4204 *outTypeSpecFlags = set->typeSpecFlags;
4205 }
4206 *outBag = (bag_entry*)(set+1);
4207 if (kDebugTableSuperNoisy) {
4208 ALOGI("Found existing bag for: 0x%x\n", resID);
4209 }
4210 return set->numAttrs;
4211 }
4212 ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
4213 resID);
4214 return BAD_INDEX;
4215 }
4216 }
4217
4218 // Bag not found, we need to compute it!
4219 if (!typeSet) {
4220 typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
4221 if (!typeSet) return NO_MEMORY;
4222 cacheEntry.cachedBags = typeSet;
4223 }
4224
4225 // Mark that we are currently working on this one.
4226 typeSet[e] = (bag_set*)0xFFFFFFFF;
4227
4228 if (kDebugTableNoisy) {
4229 ALOGI("Building bag: %x\n", resID);
4230 }
4231
4232 // Now collect all bag attributes
4233 Entry entry;
4234 status_t err = getEntry(grp, t, e, &mParams, &entry);
4235 if (err != NO_ERROR) {
4236 return err;
4237 }
4238
4239 const uint16_t entrySize = dtohs(entry.entry->size);
4240 const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
4241 ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
4242 const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
4243 ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
4244
4245 size_t N = count;
4246
4247 if (kDebugTableNoisy) {
4248 ALOGI("Found map: size=%x parent=%x count=%d\n", entrySize, parent, count);
4249
4250 // If this map inherits from another, we need to start
4251 // with its parent's values. Otherwise start out empty.
4252 ALOGI("Creating new bag, entrySize=0x%08x, parent=0x%08x\n", entrySize, parent);
4253 }
4254
4255 // This is what we are building.
4256 bag_set* set = NULL;
4257
4258 if (parent) {
4259 uint32_t resolvedParent = parent;
4260
4261 // Bags encode a parent reference without using the standard
4262 // Res_value structure. That means we must always try to
4263 // resolve a parent reference in case it is actually a
4264 // TYPE_DYNAMIC_REFERENCE.
4265 status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
4266 if (err != NO_ERROR) {
4267 ALOGE("Failed resolving bag parent id 0x%08x", parent);
4268 return UNKNOWN_ERROR;
4269 }
4270
4271 const bag_entry* parentBag;
4272 uint32_t parentTypeSpecFlags = 0;
4273 const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
4274 const size_t NT = ((NP >= 0) ? NP : 0) + N;
4275 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
4276 if (set == NULL) {
4277 return NO_MEMORY;
4278 }
4279 if (NP > 0) {
4280 memcpy(set+1, parentBag, NP*sizeof(bag_entry));
4281 set->numAttrs = NP;
4282 if (kDebugTableNoisy) {
4283 ALOGI("Initialized new bag with %zd inherited attributes.\n", NP);
4284 }
4285 } else {
4286 if (kDebugTableNoisy) {
4287 ALOGI("Initialized new bag with no inherited attributes.\n");
4288 }
4289 set->numAttrs = 0;
4290 }
4291 set->availAttrs = NT;
4292 set->typeSpecFlags = parentTypeSpecFlags;
4293 } else {
4294 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
4295 if (set == NULL) {
4296 return NO_MEMORY;
4297 }
4298 set->numAttrs = 0;
4299 set->availAttrs = N;
4300 set->typeSpecFlags = 0;
4301 }
4302
4303 set->typeSpecFlags |= entry.specFlags;
4304
4305 // Now merge in the new attributes...
4306 size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
4307 + dtohs(entry.entry->size);
4308 const ResTable_map* map;
4309 bag_entry* entries = (bag_entry*)(set+1);
4310 size_t curEntry = 0;
4311 uint32_t pos = 0;
4312 if (kDebugTableNoisy) {
4313 ALOGI("Starting with set %p, entries=%p, avail=%zu\n", set, entries, set->availAttrs);
4314 }
4315 while (pos < count) {
4316 if (kDebugTableNoisy) {
4317 ALOGI("Now at %p\n", (void*)curOff);
4318 }
4319
4320 if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
4321 ALOGW("ResTable_map at %d is beyond type chunk data %d",
4322 (int)curOff, dtohl(entry.type->header.size));
4323 return BAD_TYPE;
4324 }
4325 map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
4326 N++;
4327
4328 uint32_t newName = htodl(map->name.ident);
4329 if (!Res_INTERNALID(newName)) {
4330 // Attributes don't have a resource id as the name. They specify
4331 // other data, which would be wrong to change via a lookup.
4332 if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
4333 ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
4334 (int) curOff, (int) newName);
4335 return UNKNOWN_ERROR;
4336 }
4337 }
4338
4339 bool isInside;
4340 uint32_t oldName = 0;
4341 while ((isInside=(curEntry < set->numAttrs))
4342 && (oldName=entries[curEntry].map.name.ident) < newName) {
4343 if (kDebugTableNoisy) {
4344 ALOGI("#%zu: Keeping existing attribute: 0x%08x\n",
4345 curEntry, entries[curEntry].map.name.ident);
4346 }
4347 curEntry++;
4348 }
4349
4350 if ((!isInside) || oldName != newName) {
4351 // This is a new attribute... figure out what to do with it.
4352 if (set->numAttrs >= set->availAttrs) {
4353 // Need to alloc more memory...
4354 const size_t newAvail = set->availAttrs+N;
4355 set = (bag_set*)realloc(set,
4356 sizeof(bag_set)
4357 + sizeof(bag_entry)*newAvail);
4358 if (set == NULL) {
4359 return NO_MEMORY;
4360 }
4361 set->availAttrs = newAvail;
4362 entries = (bag_entry*)(set+1);
4363 if (kDebugTableNoisy) {
4364 ALOGI("Reallocated set %p, entries=%p, avail=%zu\n",
4365 set, entries, set->availAttrs);
4366 }
4367 }
4368 if (isInside) {
4369 // Going in the middle, need to make space.
4370 memmove(entries+curEntry+1, entries+curEntry,
4371 sizeof(bag_entry)*(set->numAttrs-curEntry));
4372 set->numAttrs++;
4373 }
4374 if (kDebugTableNoisy) {
4375 ALOGI("#%zu: Inserting new attribute: 0x%08x\n", curEntry, newName);
4376 }
4377 } else {
4378 if (kDebugTableNoisy) {
4379 ALOGI("#%zu: Replacing existing attribute: 0x%08x\n", curEntry, oldName);
4380 }
4381 }
4382
4383 bag_entry* cur = entries+curEntry;
4384
4385 cur->stringBlock = entry.package->header->index;
4386 cur->map.name.ident = newName;
4387 cur->map.value.copyFrom_dtoh(map->value);
4388 status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
4389 if (err != NO_ERROR) {
4390 ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
4391 return UNKNOWN_ERROR;
4392 }
4393
4394 if (kDebugTableNoisy) {
4395 ALOGI("Setting entry #%zu %p: block=%zd, name=0x%08d, type=%d, data=0x%08x\n",
4396 curEntry, cur, cur->stringBlock, cur->map.name.ident,
4397 cur->map.value.dataType, cur->map.value.data);
4398 }
4399
4400 // On to the next!
4401 curEntry++;
4402 pos++;
4403 const size_t size = dtohs(map->value.size);
4404 curOff += size + sizeof(*map)-sizeof(map->value);
4405 };
4406
4407 if (curEntry > set->numAttrs) {
4408 set->numAttrs = curEntry;
4409 }
4410
4411 // And this is it...
4412 typeSet[e] = set;
4413 if (set) {
4414 if (outTypeSpecFlags != NULL) {
4415 *outTypeSpecFlags = set->typeSpecFlags;
4416 }
4417 *outBag = (bag_entry*)(set+1);
4418 if (kDebugTableNoisy) {
4419 ALOGI("Returning %zu attrs\n", set->numAttrs);
4420 }
4421 return set->numAttrs;
4422 }
4423 return BAD_INDEX;
4424 }
4425
setParameters(const ResTable_config * params)4426 void ResTable::setParameters(const ResTable_config* params)
4427 {
4428 AutoMutex _lock(mLock);
4429 AutoMutex _lock2(mFilteredConfigLock);
4430
4431 if (kDebugTableGetEntry) {
4432 ALOGI("Setting parameters: %s\n", params->toString().string());
4433 }
4434 mParams = *params;
4435 for (size_t p = 0; p < mPackageGroups.size(); p++) {
4436 PackageGroup* packageGroup = mPackageGroups.editItemAt(p);
4437 if (kDebugTableNoisy) {
4438 ALOGI("CLEARING BAGS FOR GROUP %zu!", p);
4439 }
4440 packageGroup->clearBagCache();
4441
4442 // Find which configurations match the set of parameters. This allows for a much
4443 // faster lookup in getEntry() if the set of values is narrowed down.
4444 for (size_t t = 0; t < packageGroup->types.size(); t++) {
4445 if (packageGroup->types[t].isEmpty()) {
4446 continue;
4447 }
4448
4449 TypeList& typeList = packageGroup->types.editItemAt(t);
4450
4451 // Retrieve the cache entry for this type.
4452 TypeCacheEntry& cacheEntry = packageGroup->typeCacheEntries.editItemAt(t);
4453
4454 for (size_t ts = 0; ts < typeList.size(); ts++) {
4455 Type* type = typeList.editItemAt(ts);
4456
4457 std::shared_ptr<Vector<const ResTable_type*>> newFilteredConfigs =
4458 std::make_shared<Vector<const ResTable_type*>>();
4459
4460 for (size_t ti = 0; ti < type->configs.size(); ti++) {
4461 ResTable_config config;
4462 config.copyFromDtoH(type->configs[ti]->config);
4463
4464 if (config.match(mParams)) {
4465 newFilteredConfigs->add(type->configs[ti]);
4466 }
4467 }
4468
4469 if (kDebugTableNoisy) {
4470 ALOGD("Updating pkg=%zu type=%zu with %zu filtered configs",
4471 p, t, newFilteredConfigs->size());
4472 }
4473
4474 cacheEntry.filteredConfigs.add(newFilteredConfigs);
4475 }
4476 }
4477 }
4478 }
4479
getParameters(ResTable_config * params) const4480 void ResTable::getParameters(ResTable_config* params) const
4481 {
4482 mLock.lock();
4483 *params = mParams;
4484 mLock.unlock();
4485 }
4486
4487 struct id_name_map {
4488 uint32_t id;
4489 size_t len;
4490 char16_t name[6];
4491 };
4492
4493 const static id_name_map ID_NAMES[] = {
4494 { ResTable_map::ATTR_TYPE, 5, { '^', 't', 'y', 'p', 'e' } },
4495 { ResTable_map::ATTR_L10N, 5, { '^', 'l', '1', '0', 'n' } },
4496 { ResTable_map::ATTR_MIN, 4, { '^', 'm', 'i', 'n' } },
4497 { ResTable_map::ATTR_MAX, 4, { '^', 'm', 'a', 'x' } },
4498 { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4499 { ResTable_map::ATTR_ZERO, 5, { '^', 'z', 'e', 'r', 'o' } },
4500 { ResTable_map::ATTR_ONE, 4, { '^', 'o', 'n', 'e' } },
4501 { ResTable_map::ATTR_TWO, 4, { '^', 't', 'w', 'o' } },
4502 { ResTable_map::ATTR_FEW, 4, { '^', 'f', 'e', 'w' } },
4503 { ResTable_map::ATTR_MANY, 5, { '^', 'm', 'a', 'n', 'y' } },
4504 };
4505
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) const4506 uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4507 const char16_t* type, size_t typeLen,
4508 const char16_t* package,
4509 size_t packageLen,
4510 uint32_t* outTypeSpecFlags) const
4511 {
4512 if (kDebugTableSuperNoisy) {
4513 printf("Identifier for name: error=%d\n", mError);
4514 }
4515
4516 // Check for internal resource identifier as the very first thing, so
4517 // that we will always find them even when there are no resources.
4518 if (name[0] == '^') {
4519 const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4520 size_t len;
4521 for (int i=0; i<N; i++) {
4522 const id_name_map* m = ID_NAMES + i;
4523 len = m->len;
4524 if (len != nameLen) {
4525 continue;
4526 }
4527 for (size_t j=1; j<len; j++) {
4528 if (m->name[j] != name[j]) {
4529 goto nope;
4530 }
4531 }
4532 if (outTypeSpecFlags) {
4533 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4534 }
4535 return m->id;
4536 nope:
4537 ;
4538 }
4539 if (nameLen > 7) {
4540 if (name[1] == 'i' && name[2] == 'n'
4541 && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4542 && name[6] == '_') {
4543 int index = atoi(String8(name + 7, nameLen - 7).string());
4544 if (Res_CHECKID(index)) {
4545 ALOGW("Array resource index: %d is too large.",
4546 index);
4547 return 0;
4548 }
4549 if (outTypeSpecFlags) {
4550 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4551 }
4552 return Res_MAKEARRAY(index);
4553 }
4554 }
4555 return 0;
4556 }
4557
4558 if (mError != NO_ERROR) {
4559 return 0;
4560 }
4561
4562 bool fakePublic = false;
4563
4564 // Figure out the package and type we are looking in...
4565
4566 const char16_t* packageEnd = NULL;
4567 const char16_t* typeEnd = NULL;
4568 const char16_t* const nameEnd = name+nameLen;
4569 const char16_t* p = name;
4570 while (p < nameEnd) {
4571 if (*p == ':') packageEnd = p;
4572 else if (*p == '/') typeEnd = p;
4573 p++;
4574 }
4575 if (*name == '@') {
4576 name++;
4577 if (*name == '*') {
4578 fakePublic = true;
4579 name++;
4580 }
4581 }
4582 if (name >= nameEnd) {
4583 return 0;
4584 }
4585
4586 if (packageEnd) {
4587 package = name;
4588 packageLen = packageEnd-name;
4589 name = packageEnd+1;
4590 } else if (!package) {
4591 return 0;
4592 }
4593
4594 if (typeEnd) {
4595 type = name;
4596 typeLen = typeEnd-name;
4597 name = typeEnd+1;
4598 } else if (!type) {
4599 return 0;
4600 }
4601
4602 if (name >= nameEnd) {
4603 return 0;
4604 }
4605 nameLen = nameEnd-name;
4606
4607 if (kDebugTableNoisy) {
4608 printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4609 String8(type, typeLen).string(),
4610 String8(name, nameLen).string(),
4611 String8(package, packageLen).string());
4612 }
4613
4614 const String16 attr("attr");
4615 const String16 attrPrivate("^attr-private");
4616
4617 const size_t NG = mPackageGroups.size();
4618 for (size_t ig=0; ig<NG; ig++) {
4619 const PackageGroup* group = mPackageGroups[ig];
4620
4621 if (strzcmp16(package, packageLen,
4622 group->name.string(), group->name.size())) {
4623 if (kDebugTableNoisy) {
4624 printf("Skipping package group: %s\n", String8(group->name).string());
4625 }
4626 continue;
4627 }
4628
4629 const size_t packageCount = group->packages.size();
4630 for (size_t pi = 0; pi < packageCount; pi++) {
4631 const char16_t* targetType = type;
4632 size_t targetTypeLen = typeLen;
4633
4634 do {
4635 ssize_t ti = group->packages[pi]->typeStrings.indexOfString(
4636 targetType, targetTypeLen);
4637 if (ti < 0) {
4638 continue;
4639 }
4640
4641 ti += group->packages[pi]->typeIdOffset;
4642
4643 const uint32_t identifier = findEntry(group, ti, name, nameLen,
4644 outTypeSpecFlags);
4645 if (identifier != 0) {
4646 if (fakePublic && outTypeSpecFlags) {
4647 *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4648 }
4649 return identifier;
4650 }
4651 } while (strzcmp16(attr.string(), attr.size(), targetType, targetTypeLen) == 0
4652 && (targetType = attrPrivate.string())
4653 && (targetTypeLen = attrPrivate.size())
4654 );
4655 }
4656 break;
4657 }
4658 return 0;
4659 }
4660
findEntry(const PackageGroup * group,ssize_t typeIndex,const char16_t * name,size_t nameLen,uint32_t * outTypeSpecFlags) const4661 uint32_t ResTable::findEntry(const PackageGroup* group, ssize_t typeIndex, const char16_t* name,
4662 size_t nameLen, uint32_t* outTypeSpecFlags) const {
4663 const TypeList& typeList = group->types[typeIndex];
4664 const size_t typeCount = typeList.size();
4665 for (size_t i = 0; i < typeCount; i++) {
4666 const Type* t = typeList[i];
4667 const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4668 if (ei < 0) {
4669 continue;
4670 }
4671
4672 const size_t configCount = t->configs.size();
4673 for (size_t j = 0; j < configCount; j++) {
4674 const TypeVariant tv(t->configs[j]);
4675 for (TypeVariant::iterator iter = tv.beginEntries();
4676 iter != tv.endEntries();
4677 iter++) {
4678 const ResTable_entry* entry = *iter;
4679 if (entry == NULL) {
4680 continue;
4681 }
4682
4683 if (dtohl(entry->key.index) == (size_t) ei) {
4684 uint32_t resId = Res_MAKEID(group->id - 1, typeIndex, iter.index());
4685 if (outTypeSpecFlags) {
4686 Entry result;
4687 if (getEntry(group, typeIndex, iter.index(), NULL, &result) != NO_ERROR) {
4688 ALOGW("Failed to find spec flags for 0x%08x", resId);
4689 return 0;
4690 }
4691 *outTypeSpecFlags = result.specFlags;
4692 }
4693 return resId;
4694 }
4695 }
4696 }
4697 }
4698 return 0;
4699 }
4700
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)4701 bool ResTable::expandResourceRef(const char16_t* refStr, size_t refLen,
4702 String16* outPackage,
4703 String16* outType,
4704 String16* outName,
4705 const String16* defType,
4706 const String16* defPackage,
4707 const char** outErrorMsg,
4708 bool* outPublicOnly)
4709 {
4710 const char16_t* packageEnd = NULL;
4711 const char16_t* typeEnd = NULL;
4712 const char16_t* p = refStr;
4713 const char16_t* const end = p + refLen;
4714 while (p < end) {
4715 if (*p == ':') packageEnd = p;
4716 else if (*p == '/') {
4717 typeEnd = p;
4718 break;
4719 }
4720 p++;
4721 }
4722 p = refStr;
4723 if (*p == '@') p++;
4724
4725 if (outPublicOnly != NULL) {
4726 *outPublicOnly = true;
4727 }
4728 if (*p == '*') {
4729 p++;
4730 if (outPublicOnly != NULL) {
4731 *outPublicOnly = false;
4732 }
4733 }
4734
4735 if (packageEnd) {
4736 *outPackage = String16(p, packageEnd-p);
4737 p = packageEnd+1;
4738 } else {
4739 if (!defPackage) {
4740 if (outErrorMsg) {
4741 *outErrorMsg = "No resource package specified";
4742 }
4743 return false;
4744 }
4745 *outPackage = *defPackage;
4746 }
4747 if (typeEnd) {
4748 *outType = String16(p, typeEnd-p);
4749 p = typeEnd+1;
4750 } else {
4751 if (!defType) {
4752 if (outErrorMsg) {
4753 *outErrorMsg = "No resource type specified";
4754 }
4755 return false;
4756 }
4757 *outType = *defType;
4758 }
4759 *outName = String16(p, end-p);
4760 if(**outPackage == 0) {
4761 if(outErrorMsg) {
4762 *outErrorMsg = "Resource package cannot be an empty string";
4763 }
4764 return false;
4765 }
4766 if(**outType == 0) {
4767 if(outErrorMsg) {
4768 *outErrorMsg = "Resource type cannot be an empty string";
4769 }
4770 return false;
4771 }
4772 if(**outName == 0) {
4773 if(outErrorMsg) {
4774 *outErrorMsg = "Resource id cannot be an empty string";
4775 }
4776 return false;
4777 }
4778 return true;
4779 }
4780
get_hex(char c,bool * outError)4781 static uint32_t get_hex(char c, bool* outError)
4782 {
4783 if (c >= '0' && c <= '9') {
4784 return c - '0';
4785 } else if (c >= 'a' && c <= 'f') {
4786 return c - 'a' + 0xa;
4787 } else if (c >= 'A' && c <= 'F') {
4788 return c - 'A' + 0xa;
4789 }
4790 *outError = true;
4791 return 0;
4792 }
4793
4794 struct unit_entry
4795 {
4796 const char* name;
4797 size_t len;
4798 uint8_t type;
4799 uint32_t unit;
4800 float scale;
4801 };
4802
4803 static const unit_entry unitNames[] = {
4804 { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
4805 { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4806 { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4807 { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
4808 { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
4809 { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
4810 { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
4811 { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
4812 { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
4813 { NULL, 0, 0, 0, 0 }
4814 };
4815
parse_unit(const char * str,Res_value * outValue,float * outScale,const char ** outEnd)4816 static bool parse_unit(const char* str, Res_value* outValue,
4817 float* outScale, const char** outEnd)
4818 {
4819 const char* end = str;
4820 while (*end != 0 && !isspace((unsigned char)*end)) {
4821 end++;
4822 }
4823 const size_t len = end-str;
4824
4825 const char* realEnd = end;
4826 while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
4827 realEnd++;
4828 }
4829 if (*realEnd != 0) {
4830 return false;
4831 }
4832
4833 const unit_entry* cur = unitNames;
4834 while (cur->name) {
4835 if (len == cur->len && strncmp(cur->name, str, len) == 0) {
4836 outValue->dataType = cur->type;
4837 outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
4838 *outScale = cur->scale;
4839 *outEnd = end;
4840 //printf("Found unit %s for %s\n", cur->name, str);
4841 return true;
4842 }
4843 cur++;
4844 }
4845
4846 return false;
4847 }
4848
U16StringToInt(const char16_t * s,size_t len,Res_value * outValue)4849 bool U16StringToInt(const char16_t* s, size_t len, Res_value* outValue)
4850 {
4851 while (len > 0 && isspace16(*s)) {
4852 s++;
4853 len--;
4854 }
4855
4856 if (len <= 0) {
4857 return false;
4858 }
4859
4860 size_t i = 0;
4861 int64_t val = 0;
4862 bool neg = false;
4863
4864 if (*s == '-') {
4865 neg = true;
4866 i++;
4867 }
4868
4869 if (s[i] < '0' || s[i] > '9') {
4870 return false;
4871 }
4872
4873 static_assert(std::is_same<uint32_t, Res_value::data_type>::value,
4874 "Res_value::data_type has changed. The range checks in this "
4875 "function are no longer correct.");
4876
4877 // Decimal or hex?
4878 bool isHex;
4879 if (len > 1 && s[i] == '0' && s[i+1] == 'x') {
4880 isHex = true;
4881 i += 2;
4882
4883 if (neg) {
4884 return false;
4885 }
4886
4887 if (i == len) {
4888 // Just u"0x"
4889 return false;
4890 }
4891
4892 bool error = false;
4893 while (i < len && !error) {
4894 val = (val*16) + get_hex(s[i], &error);
4895 i++;
4896
4897 if (val > std::numeric_limits<uint32_t>::max()) {
4898 return false;
4899 }
4900 }
4901 if (error) {
4902 return false;
4903 }
4904 } else {
4905 isHex = false;
4906 while (i < len) {
4907 if (s[i] < '0' || s[i] > '9') {
4908 return false;
4909 }
4910 val = (val*10) + s[i]-'0';
4911 i++;
4912
4913 if ((neg && -val < std::numeric_limits<int32_t>::min()) ||
4914 (!neg && val > std::numeric_limits<int32_t>::max())) {
4915 return false;
4916 }
4917 }
4918 }
4919
4920 if (neg) val = -val;
4921
4922 while (i < len && isspace16(s[i])) {
4923 i++;
4924 }
4925
4926 if (i != len) {
4927 return false;
4928 }
4929
4930 if (outValue) {
4931 outValue->dataType =
4932 isHex ? outValue->TYPE_INT_HEX : outValue->TYPE_INT_DEC;
4933 outValue->data = static_cast<Res_value::data_type>(val);
4934 }
4935 return true;
4936 }
4937
stringToInt(const char16_t * s,size_t len,Res_value * outValue)4938 bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
4939 {
4940 return U16StringToInt(s, len, outValue);
4941 }
4942
stringToFloat(const char16_t * s,size_t len,Res_value * outValue)4943 bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
4944 {
4945 while (len > 0 && isspace16(*s)) {
4946 s++;
4947 len--;
4948 }
4949
4950 if (len <= 0) {
4951 return false;
4952 }
4953
4954 char buf[128];
4955 int i=0;
4956 while (len > 0 && *s != 0 && i < 126) {
4957 if (*s > 255) {
4958 return false;
4959 }
4960 buf[i++] = *s++;
4961 len--;
4962 }
4963
4964 if (len > 0) {
4965 return false;
4966 }
4967 if ((buf[0] < '0' || buf[0] > '9') && buf[0] != '.' && buf[0] != '-' && buf[0] != '+') {
4968 return false;
4969 }
4970
4971 buf[i] = 0;
4972 const char* end;
4973 float f = strtof(buf, (char**)&end);
4974
4975 if (*end != 0 && !isspace((unsigned char)*end)) {
4976 // Might be a unit...
4977 float scale;
4978 if (parse_unit(end, outValue, &scale, &end)) {
4979 f *= scale;
4980 const bool neg = f < 0;
4981 if (neg) f = -f;
4982 uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4983 uint32_t radix;
4984 uint32_t shift;
4985 if ((bits&0x7fffff) == 0) {
4986 // Always use 23p0 if there is no fraction, just to make
4987 // things easier to read.
4988 radix = Res_value::COMPLEX_RADIX_23p0;
4989 shift = 23;
4990 } else if ((bits&0xffffffffff800000LL) == 0) {
4991 // Magnitude is zero -- can fit in 0 bits of precision.
4992 radix = Res_value::COMPLEX_RADIX_0p23;
4993 shift = 0;
4994 } else if ((bits&0xffffffff80000000LL) == 0) {
4995 // Magnitude can fit in 8 bits of precision.
4996 radix = Res_value::COMPLEX_RADIX_8p15;
4997 shift = 8;
4998 } else if ((bits&0xffffff8000000000LL) == 0) {
4999 // Magnitude can fit in 16 bits of precision.
5000 radix = Res_value::COMPLEX_RADIX_16p7;
5001 shift = 16;
5002 } else {
5003 // Magnitude needs entire range, so no fractional part.
5004 radix = Res_value::COMPLEX_RADIX_23p0;
5005 shift = 23;
5006 }
5007 int32_t mantissa = (int32_t)(
5008 (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
5009 if (neg) {
5010 mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
5011 }
5012 outValue->data |=
5013 (radix<<Res_value::COMPLEX_RADIX_SHIFT)
5014 | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
5015 //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
5016 // f * (neg ? -1 : 1), bits, f*(1<<23),
5017 // radix, shift, outValue->data);
5018 return true;
5019 }
5020 return false;
5021 }
5022
5023 while (*end != 0 && isspace((unsigned char)*end)) {
5024 end++;
5025 }
5026
5027 if (*end == 0) {
5028 if (outValue) {
5029 outValue->dataType = outValue->TYPE_FLOAT;
5030 *(float*)(&outValue->data) = f;
5031 return true;
5032 }
5033 }
5034
5035 return false;
5036 }
5037
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) const5038 bool ResTable::stringToValue(Res_value* outValue, String16* outString,
5039 const char16_t* s, size_t len,
5040 bool preserveSpaces, bool coerceType,
5041 uint32_t attrID,
5042 const String16* defType,
5043 const String16* defPackage,
5044 Accessor* accessor,
5045 void* accessorCookie,
5046 uint32_t attrType,
5047 bool enforcePrivate) const
5048 {
5049 bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
5050 const char* errorMsg = NULL;
5051
5052 outValue->size = sizeof(Res_value);
5053 outValue->res0 = 0;
5054
5055 // First strip leading/trailing whitespace. Do this before handling
5056 // escapes, so they can be used to force whitespace into the string.
5057 if (!preserveSpaces) {
5058 while (len > 0 && isspace16(*s)) {
5059 s++;
5060 len--;
5061 }
5062 while (len > 0 && isspace16(s[len-1])) {
5063 len--;
5064 }
5065 // If the string ends with '\', then we keep the space after it.
5066 if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
5067 len++;
5068 }
5069 }
5070
5071 //printf("Value for: %s\n", String8(s, len).string());
5072
5073 uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
5074 uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
5075 bool fromAccessor = false;
5076 if (attrID != 0 && !Res_INTERNALID(attrID)) {
5077 const ssize_t p = getResourcePackageIndex(attrID);
5078 const bag_entry* bag;
5079 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5080 //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
5081 if (cnt >= 0) {
5082 while (cnt > 0) {
5083 //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
5084 switch (bag->map.name.ident) {
5085 case ResTable_map::ATTR_TYPE:
5086 attrType = bag->map.value.data;
5087 break;
5088 case ResTable_map::ATTR_MIN:
5089 attrMin = bag->map.value.data;
5090 break;
5091 case ResTable_map::ATTR_MAX:
5092 attrMax = bag->map.value.data;
5093 break;
5094 case ResTable_map::ATTR_L10N:
5095 l10nReq = bag->map.value.data;
5096 break;
5097 }
5098 bag++;
5099 cnt--;
5100 }
5101 unlockBag(bag);
5102 } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
5103 fromAccessor = true;
5104 if (attrType == ResTable_map::TYPE_ENUM
5105 || attrType == ResTable_map::TYPE_FLAGS
5106 || attrType == ResTable_map::TYPE_INTEGER) {
5107 accessor->getAttributeMin(attrID, &attrMin);
5108 accessor->getAttributeMax(attrID, &attrMax);
5109 }
5110 if (localizationSetting) {
5111 l10nReq = accessor->getAttributeL10N(attrID);
5112 }
5113 }
5114 }
5115
5116 const bool canStringCoerce =
5117 coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
5118
5119 if (*s == '@') {
5120 outValue->dataType = outValue->TYPE_REFERENCE;
5121
5122 // Note: we don't check attrType here because the reference can
5123 // be to any other type; we just need to count on the client making
5124 // sure the referenced type is correct.
5125
5126 //printf("Looking up ref: %s\n", String8(s, len).string());
5127
5128 // It's a reference!
5129 if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
5130 // Special case @null as undefined. This will be converted by
5131 // AssetManager to TYPE_NULL with data DATA_NULL_UNDEFINED.
5132 outValue->data = 0;
5133 return true;
5134 } else if (len == 6 && s[1]=='e' && s[2]=='m' && s[3]=='p' && s[4]=='t' && s[5]=='y') {
5135 // Special case @empty as explicitly defined empty value.
5136 outValue->dataType = Res_value::TYPE_NULL;
5137 outValue->data = Res_value::DATA_NULL_EMPTY;
5138 return true;
5139 } else {
5140 bool createIfNotFound = false;
5141 const char16_t* resourceRefName;
5142 int resourceNameLen;
5143 if (len > 2 && s[1] == '+') {
5144 createIfNotFound = true;
5145 resourceRefName = s + 2;
5146 resourceNameLen = len - 2;
5147 } else if (len > 2 && s[1] == '*') {
5148 enforcePrivate = false;
5149 resourceRefName = s + 2;
5150 resourceNameLen = len - 2;
5151 } else {
5152 createIfNotFound = false;
5153 resourceRefName = s + 1;
5154 resourceNameLen = len - 1;
5155 }
5156 String16 package, type, name;
5157 if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
5158 defType, defPackage, &errorMsg)) {
5159 if (accessor != NULL) {
5160 accessor->reportError(accessorCookie, errorMsg);
5161 }
5162 return false;
5163 }
5164
5165 uint32_t specFlags = 0;
5166 uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
5167 type.size(), package.string(), package.size(), &specFlags);
5168 if (rid != 0) {
5169 if (enforcePrivate) {
5170 if (accessor == NULL || accessor->getAssetsPackage() != package) {
5171 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5172 if (accessor != NULL) {
5173 accessor->reportError(accessorCookie, "Resource is not public.");
5174 }
5175 return false;
5176 }
5177 }
5178 }
5179
5180 if (accessor) {
5181 rid = Res_MAKEID(
5182 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5183 Res_GETTYPE(rid), Res_GETENTRY(rid));
5184 if (kDebugTableNoisy) {
5185 ALOGI("Incl %s:%s/%s: 0x%08x\n",
5186 String8(package).string(), String8(type).string(),
5187 String8(name).string(), rid);
5188 }
5189 }
5190
5191 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5192 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5193 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5194 }
5195 outValue->data = rid;
5196 return true;
5197 }
5198
5199 if (accessor) {
5200 uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
5201 createIfNotFound);
5202 if (rid != 0) {
5203 if (kDebugTableNoisy) {
5204 ALOGI("Pckg %s:%s/%s: 0x%08x\n",
5205 String8(package).string(), String8(type).string(),
5206 String8(name).string(), rid);
5207 }
5208 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5209 if (packageId == 0x00) {
5210 outValue->data = rid;
5211 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5212 return true;
5213 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5214 // We accept packageId's generated as 0x01 in order to support
5215 // building the android system resources
5216 outValue->data = rid;
5217 return true;
5218 }
5219 }
5220 }
5221 }
5222
5223 if (accessor != NULL) {
5224 accessor->reportError(accessorCookie, "No resource found that matches the given name");
5225 }
5226 return false;
5227 }
5228
5229 // if we got to here, and localization is required and it's not a reference,
5230 // complain and bail.
5231 if (l10nReq == ResTable_map::L10N_SUGGESTED) {
5232 if (localizationSetting) {
5233 if (accessor != NULL) {
5234 accessor->reportError(accessorCookie, "This attribute must be localized.");
5235 }
5236 }
5237 }
5238
5239 if (*s == '#') {
5240 // It's a color! Convert to an integer of the form 0xaarrggbb.
5241 uint32_t color = 0;
5242 bool error = false;
5243 if (len == 4) {
5244 outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
5245 color |= 0xFF000000;
5246 color |= get_hex(s[1], &error) << 20;
5247 color |= get_hex(s[1], &error) << 16;
5248 color |= get_hex(s[2], &error) << 12;
5249 color |= get_hex(s[2], &error) << 8;
5250 color |= get_hex(s[3], &error) << 4;
5251 color |= get_hex(s[3], &error);
5252 } else if (len == 5) {
5253 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
5254 color |= get_hex(s[1], &error) << 28;
5255 color |= get_hex(s[1], &error) << 24;
5256 color |= get_hex(s[2], &error) << 20;
5257 color |= get_hex(s[2], &error) << 16;
5258 color |= get_hex(s[3], &error) << 12;
5259 color |= get_hex(s[3], &error) << 8;
5260 color |= get_hex(s[4], &error) << 4;
5261 color |= get_hex(s[4], &error);
5262 } else if (len == 7) {
5263 outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
5264 color |= 0xFF000000;
5265 color |= get_hex(s[1], &error) << 20;
5266 color |= get_hex(s[2], &error) << 16;
5267 color |= get_hex(s[3], &error) << 12;
5268 color |= get_hex(s[4], &error) << 8;
5269 color |= get_hex(s[5], &error) << 4;
5270 color |= get_hex(s[6], &error);
5271 } else if (len == 9) {
5272 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
5273 color |= get_hex(s[1], &error) << 28;
5274 color |= get_hex(s[2], &error) << 24;
5275 color |= get_hex(s[3], &error) << 20;
5276 color |= get_hex(s[4], &error) << 16;
5277 color |= get_hex(s[5], &error) << 12;
5278 color |= get_hex(s[6], &error) << 8;
5279 color |= get_hex(s[7], &error) << 4;
5280 color |= get_hex(s[8], &error);
5281 } else {
5282 error = true;
5283 }
5284 if (!error) {
5285 if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
5286 if (!canStringCoerce) {
5287 if (accessor != NULL) {
5288 accessor->reportError(accessorCookie,
5289 "Color types not allowed");
5290 }
5291 return false;
5292 }
5293 } else {
5294 outValue->data = color;
5295 //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
5296 return true;
5297 }
5298 } else {
5299 if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
5300 if (accessor != NULL) {
5301 accessor->reportError(accessorCookie, "Color value not valid --"
5302 " must be #rgb, #argb, #rrggbb, or #aarrggbb");
5303 }
5304 #if 0
5305 fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
5306 "Resource File", //(const char*)in->getPrintableSource(),
5307 String8(*curTag).string(),
5308 String8(s, len).string());
5309 #endif
5310 return false;
5311 }
5312 }
5313 }
5314
5315 if (*s == '?') {
5316 outValue->dataType = outValue->TYPE_ATTRIBUTE;
5317
5318 // Note: we don't check attrType here because the reference can
5319 // be to any other type; we just need to count on the client making
5320 // sure the referenced type is correct.
5321
5322 //printf("Looking up attr: %s\n", String8(s, len).string());
5323
5324 static const String16 attr16("attr");
5325 String16 package, type, name;
5326 if (!expandResourceRef(s+1, len-1, &package, &type, &name,
5327 &attr16, defPackage, &errorMsg)) {
5328 if (accessor != NULL) {
5329 accessor->reportError(accessorCookie, errorMsg);
5330 }
5331 return false;
5332 }
5333
5334 //printf("Pkg: %s, Type: %s, Name: %s\n",
5335 // String8(package).string(), String8(type).string(),
5336 // String8(name).string());
5337 uint32_t specFlags = 0;
5338 uint32_t rid =
5339 identifierForName(name.string(), name.size(),
5340 type.string(), type.size(),
5341 package.string(), package.size(), &specFlags);
5342 if (rid != 0) {
5343 if (enforcePrivate) {
5344 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5345 if (accessor != NULL) {
5346 accessor->reportError(accessorCookie, "Attribute is not public.");
5347 }
5348 return false;
5349 }
5350 }
5351
5352 if (accessor) {
5353 rid = Res_MAKEID(
5354 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5355 Res_GETTYPE(rid), Res_GETENTRY(rid));
5356 }
5357
5358 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5359 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5360 outValue->dataType = Res_value::TYPE_DYNAMIC_ATTRIBUTE;
5361 }
5362 outValue->data = rid;
5363 return true;
5364 }
5365
5366 if (accessor) {
5367 uint32_t rid = accessor->getCustomResource(package, type, name);
5368 if (rid != 0) {
5369 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5370 if (packageId == 0x00) {
5371 outValue->data = rid;
5372 outValue->dataType = Res_value::TYPE_DYNAMIC_ATTRIBUTE;
5373 return true;
5374 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5375 // We accept packageId's generated as 0x01 in order to support
5376 // building the android system resources
5377 outValue->data = rid;
5378 return true;
5379 }
5380 }
5381 }
5382
5383 if (accessor != NULL) {
5384 accessor->reportError(accessorCookie, "No resource found that matches the given name");
5385 }
5386 return false;
5387 }
5388
5389 if (stringToInt(s, len, outValue)) {
5390 if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
5391 // If this type does not allow integers, but does allow floats,
5392 // fall through on this error case because the float type should
5393 // be able to accept any integer value.
5394 if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
5395 if (accessor != NULL) {
5396 accessor->reportError(accessorCookie, "Integer types not allowed");
5397 }
5398 return false;
5399 }
5400 } else {
5401 if (((int32_t)outValue->data) < ((int32_t)attrMin)
5402 || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
5403 if (accessor != NULL) {
5404 accessor->reportError(accessorCookie, "Integer value out of range");
5405 }
5406 return false;
5407 }
5408 return true;
5409 }
5410 }
5411
5412 if (stringToFloat(s, len, outValue)) {
5413 if (outValue->dataType == Res_value::TYPE_DIMENSION) {
5414 if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
5415 return true;
5416 }
5417 if (!canStringCoerce) {
5418 if (accessor != NULL) {
5419 accessor->reportError(accessorCookie, "Dimension types not allowed");
5420 }
5421 return false;
5422 }
5423 } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
5424 if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
5425 return true;
5426 }
5427 if (!canStringCoerce) {
5428 if (accessor != NULL) {
5429 accessor->reportError(accessorCookie, "Fraction types not allowed");
5430 }
5431 return false;
5432 }
5433 } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
5434 if (!canStringCoerce) {
5435 if (accessor != NULL) {
5436 accessor->reportError(accessorCookie, "Float types not allowed");
5437 }
5438 return false;
5439 }
5440 } else {
5441 return true;
5442 }
5443 }
5444
5445 if (len == 4) {
5446 if ((s[0] == 't' || s[0] == 'T') &&
5447 (s[1] == 'r' || s[1] == 'R') &&
5448 (s[2] == 'u' || s[2] == 'U') &&
5449 (s[3] == 'e' || s[3] == 'E')) {
5450 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5451 if (!canStringCoerce) {
5452 if (accessor != NULL) {
5453 accessor->reportError(accessorCookie, "Boolean types not allowed");
5454 }
5455 return false;
5456 }
5457 } else {
5458 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5459 outValue->data = (uint32_t)-1;
5460 return true;
5461 }
5462 }
5463 }
5464
5465 if (len == 5) {
5466 if ((s[0] == 'f' || s[0] == 'F') &&
5467 (s[1] == 'a' || s[1] == 'A') &&
5468 (s[2] == 'l' || s[2] == 'L') &&
5469 (s[3] == 's' || s[3] == 'S') &&
5470 (s[4] == 'e' || s[4] == 'E')) {
5471 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5472 if (!canStringCoerce) {
5473 if (accessor != NULL) {
5474 accessor->reportError(accessorCookie, "Boolean types not allowed");
5475 }
5476 return false;
5477 }
5478 } else {
5479 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5480 outValue->data = 0;
5481 return true;
5482 }
5483 }
5484 }
5485
5486 if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
5487 const ssize_t p = getResourcePackageIndex(attrID);
5488 const bag_entry* bag;
5489 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5490 //printf("Got %d for enum\n", cnt);
5491 if (cnt >= 0) {
5492 resource_name rname;
5493 while (cnt > 0) {
5494 if (!Res_INTERNALID(bag->map.name.ident)) {
5495 //printf("Trying attr #%08x\n", bag->map.name.ident);
5496 if (getResourceName(bag->map.name.ident, false, &rname)) {
5497 #if 0
5498 printf("Matching %s against %s (0x%08x)\n",
5499 String8(s, len).string(),
5500 String8(rname.name, rname.nameLen).string(),
5501 bag->map.name.ident);
5502 #endif
5503 if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
5504 outValue->dataType = bag->map.value.dataType;
5505 outValue->data = bag->map.value.data;
5506 unlockBag(bag);
5507 return true;
5508 }
5509 }
5510
5511 }
5512 bag++;
5513 cnt--;
5514 }
5515 unlockBag(bag);
5516 }
5517
5518 if (fromAccessor) {
5519 if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5520 return true;
5521 }
5522 }
5523 }
5524
5525 if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5526 const ssize_t p = getResourcePackageIndex(attrID);
5527 const bag_entry* bag;
5528 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5529 //printf("Got %d for flags\n", cnt);
5530 if (cnt >= 0) {
5531 bool failed = false;
5532 resource_name rname;
5533 outValue->dataType = Res_value::TYPE_INT_HEX;
5534 outValue->data = 0;
5535 const char16_t* end = s + len;
5536 const char16_t* pos = s;
5537 while (pos < end && !failed) {
5538 const char16_t* start = pos;
5539 pos++;
5540 while (pos < end && *pos != '|') {
5541 pos++;
5542 }
5543 //printf("Looking for: %s\n", String8(start, pos-start).string());
5544 const bag_entry* bagi = bag;
5545 ssize_t i;
5546 for (i=0; i<cnt; i++, bagi++) {
5547 if (!Res_INTERNALID(bagi->map.name.ident)) {
5548 //printf("Trying attr #%08x\n", bagi->map.name.ident);
5549 if (getResourceName(bagi->map.name.ident, false, &rname)) {
5550 #if 0
5551 printf("Matching %s against %s (0x%08x)\n",
5552 String8(start,pos-start).string(),
5553 String8(rname.name, rname.nameLen).string(),
5554 bagi->map.name.ident);
5555 #endif
5556 if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5557 outValue->data |= bagi->map.value.data;
5558 break;
5559 }
5560 }
5561 }
5562 }
5563 if (i >= cnt) {
5564 // Didn't find this flag identifier.
5565 failed = true;
5566 }
5567 if (pos < end) {
5568 pos++;
5569 }
5570 }
5571 unlockBag(bag);
5572 if (!failed) {
5573 //printf("Final flag value: 0x%lx\n", outValue->data);
5574 return true;
5575 }
5576 }
5577
5578
5579 if (fromAccessor) {
5580 if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5581 //printf("Final flag value: 0x%lx\n", outValue->data);
5582 return true;
5583 }
5584 }
5585 }
5586
5587 if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5588 if (accessor != NULL) {
5589 accessor->reportError(accessorCookie, "String types not allowed");
5590 }
5591 return false;
5592 }
5593
5594 // Generic string handling...
5595 outValue->dataType = outValue->TYPE_STRING;
5596 if (outString) {
5597 bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5598 if (accessor != NULL) {
5599 accessor->reportError(accessorCookie, errorMsg);
5600 }
5601 return failed;
5602 }
5603
5604 return true;
5605 }
5606
collectString(String16 * outString,const char16_t * s,size_t len,bool preserveSpaces,const char ** outErrorMsg,bool append)5607 bool ResTable::collectString(String16* outString,
5608 const char16_t* s, size_t len,
5609 bool preserveSpaces,
5610 const char** outErrorMsg,
5611 bool append)
5612 {
5613 String16 tmp;
5614
5615 char quoted = 0;
5616 const char16_t* p = s;
5617 while (p < (s+len)) {
5618 while (p < (s+len)) {
5619 const char16_t c = *p;
5620 if (c == '\\') {
5621 break;
5622 }
5623 if (!preserveSpaces) {
5624 if (quoted == 0 && isspace16(c)
5625 && (c != ' ' || isspace16(*(p+1)))) {
5626 break;
5627 }
5628 if (c == '"' && (quoted == 0 || quoted == '"')) {
5629 break;
5630 }
5631 if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5632 /*
5633 * In practice, when people write ' instead of \'
5634 * in a string, they are doing it by accident
5635 * instead of really meaning to use ' as a quoting
5636 * character. Warn them so they don't lose it.
5637 */
5638 if (outErrorMsg) {
5639 *outErrorMsg = "Apostrophe not preceded by \\";
5640 }
5641 return false;
5642 }
5643 }
5644 p++;
5645 }
5646 if (p < (s+len)) {
5647 if (p > s) {
5648 tmp.append(String16(s, p-s));
5649 }
5650 if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5651 if (quoted == 0) {
5652 quoted = *p;
5653 } else {
5654 quoted = 0;
5655 }
5656 p++;
5657 } else if (!preserveSpaces && isspace16(*p)) {
5658 // Space outside of a quote -- consume all spaces and
5659 // leave a single plain space char.
5660 tmp.append(String16(" "));
5661 p++;
5662 while (p < (s+len) && isspace16(*p)) {
5663 p++;
5664 }
5665 } else if (*p == '\\') {
5666 p++;
5667 if (p < (s+len)) {
5668 switch (*p) {
5669 case 't':
5670 tmp.append(String16("\t"));
5671 break;
5672 case 'n':
5673 tmp.append(String16("\n"));
5674 break;
5675 case '#':
5676 tmp.append(String16("#"));
5677 break;
5678 case '@':
5679 tmp.append(String16("@"));
5680 break;
5681 case '?':
5682 tmp.append(String16("?"));
5683 break;
5684 case '"':
5685 tmp.append(String16("\""));
5686 break;
5687 case '\'':
5688 tmp.append(String16("'"));
5689 break;
5690 case '\\':
5691 tmp.append(String16("\\"));
5692 break;
5693 case 'u':
5694 {
5695 char16_t chr = 0;
5696 int i = 0;
5697 while (i < 4 && p[1] != 0) {
5698 p++;
5699 i++;
5700 int c;
5701 if (*p >= '0' && *p <= '9') {
5702 c = *p - '0';
5703 } else if (*p >= 'a' && *p <= 'f') {
5704 c = *p - 'a' + 10;
5705 } else if (*p >= 'A' && *p <= 'F') {
5706 c = *p - 'A' + 10;
5707 } else {
5708 if (outErrorMsg) {
5709 *outErrorMsg = "Bad character in \\u unicode escape sequence";
5710 }
5711 return false;
5712 }
5713 chr = (chr<<4) | c;
5714 }
5715 tmp.append(String16(&chr, 1));
5716 } break;
5717 default:
5718 // ignore unknown escape chars.
5719 break;
5720 }
5721 p++;
5722 }
5723 }
5724 len -= (p-s);
5725 s = p;
5726 }
5727 }
5728
5729 if (tmp.size() != 0) {
5730 if (len > 0) {
5731 tmp.append(String16(s, len));
5732 }
5733 if (append) {
5734 outString->append(tmp);
5735 } else {
5736 outString->setTo(tmp);
5737 }
5738 } else {
5739 if (append) {
5740 outString->append(String16(s, len));
5741 } else {
5742 outString->setTo(s, len);
5743 }
5744 }
5745
5746 return true;
5747 }
5748
getBasePackageCount() const5749 size_t ResTable::getBasePackageCount() const
5750 {
5751 if (mError != NO_ERROR) {
5752 return 0;
5753 }
5754 return mPackageGroups.size();
5755 }
5756
getBasePackageName(size_t idx) const5757 const String16 ResTable::getBasePackageName(size_t idx) const
5758 {
5759 if (mError != NO_ERROR) {
5760 return String16();
5761 }
5762 LOG_FATAL_IF(idx >= mPackageGroups.size(),
5763 "Requested package index %d past package count %d",
5764 (int)idx, (int)mPackageGroups.size());
5765 return mPackageGroups[idx]->name;
5766 }
5767
getBasePackageId(size_t idx) const5768 uint32_t ResTable::getBasePackageId(size_t idx) const
5769 {
5770 if (mError != NO_ERROR) {
5771 return 0;
5772 }
5773 LOG_FATAL_IF(idx >= mPackageGroups.size(),
5774 "Requested package index %d past package count %d",
5775 (int)idx, (int)mPackageGroups.size());
5776 return mPackageGroups[idx]->id;
5777 }
5778
getLastTypeIdForPackage(size_t idx) const5779 uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
5780 {
5781 if (mError != NO_ERROR) {
5782 return 0;
5783 }
5784 LOG_FATAL_IF(idx >= mPackageGroups.size(),
5785 "Requested package index %d past package count %d",
5786 (int)idx, (int)mPackageGroups.size());
5787 const PackageGroup* const group = mPackageGroups[idx];
5788 return group->largestTypeId;
5789 }
5790
getTableCount() const5791 size_t ResTable::getTableCount() const
5792 {
5793 return mHeaders.size();
5794 }
5795
getTableStringBlock(size_t index) const5796 const ResStringPool* ResTable::getTableStringBlock(size_t index) const
5797 {
5798 return &mHeaders[index]->values;
5799 }
5800
getTableCookie(size_t index) const5801 int32_t ResTable::getTableCookie(size_t index) const
5802 {
5803 return mHeaders[index]->cookie;
5804 }
5805
getDynamicRefTableForCookie(int32_t cookie) const5806 const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
5807 {
5808 const size_t N = mPackageGroups.size();
5809 for (size_t i = 0; i < N; i++) {
5810 const PackageGroup* pg = mPackageGroups[i];
5811 size_t M = pg->packages.size();
5812 for (size_t j = 0; j < M; j++) {
5813 if (pg->packages[j]->header->cookie == cookie) {
5814 return &pg->dynamicRefTable;
5815 }
5816 }
5817 }
5818 return NULL;
5819 }
5820
compareResTableConfig(const ResTable_config & a,const ResTable_config & b)5821 static bool compareResTableConfig(const ResTable_config& a, const ResTable_config& b) {
5822 return a.compare(b) < 0;
5823 }
5824
5825 template <typename Func>
forEachConfiguration(bool ignoreMipmap,bool ignoreAndroidPackage,bool includeSystemConfigs,const Func & f) const5826 void ResTable::forEachConfiguration(bool ignoreMipmap, bool ignoreAndroidPackage,
5827 bool includeSystemConfigs, const Func& f) const {
5828 const size_t packageCount = mPackageGroups.size();
5829 const String16 android("android");
5830 for (size_t i = 0; i < packageCount; i++) {
5831 const PackageGroup* packageGroup = mPackageGroups[i];
5832 if (ignoreAndroidPackage && android == packageGroup->name) {
5833 continue;
5834 }
5835 if (!includeSystemConfigs && packageGroup->isSystemAsset) {
5836 continue;
5837 }
5838 const size_t typeCount = packageGroup->types.size();
5839 for (size_t j = 0; j < typeCount; j++) {
5840 const TypeList& typeList = packageGroup->types[j];
5841 const size_t numTypes = typeList.size();
5842 for (size_t k = 0; k < numTypes; k++) {
5843 const Type* type = typeList[k];
5844 const ResStringPool& typeStrings = type->package->typeStrings;
5845 if (ignoreMipmap && typeStrings.string8ObjectAt(
5846 type->typeSpec->id - 1) == "mipmap") {
5847 continue;
5848 }
5849
5850 const size_t numConfigs = type->configs.size();
5851 for (size_t m = 0; m < numConfigs; m++) {
5852 const ResTable_type* config = type->configs[m];
5853 ResTable_config cfg;
5854 memset(&cfg, 0, sizeof(ResTable_config));
5855 cfg.copyFromDtoH(config->config);
5856
5857 f(cfg);
5858 }
5859 }
5860 }
5861 }
5862 }
5863
getConfigurations(Vector<ResTable_config> * configs,bool ignoreMipmap,bool ignoreAndroidPackage,bool includeSystemConfigs) const5864 void ResTable::getConfigurations(Vector<ResTable_config>* configs, bool ignoreMipmap,
5865 bool ignoreAndroidPackage, bool includeSystemConfigs) const {
5866 auto func = [&](const ResTable_config& cfg) {
5867 const auto beginIter = configs->begin();
5868 const auto endIter = configs->end();
5869
5870 auto iter = std::lower_bound(beginIter, endIter, cfg, compareResTableConfig);
5871 if (iter == endIter || iter->compare(cfg) != 0) {
5872 configs->insertAt(cfg, std::distance(beginIter, iter));
5873 }
5874 };
5875 forEachConfiguration(ignoreMipmap, ignoreAndroidPackage, includeSystemConfigs, func);
5876 }
5877
compareString8AndCString(const String8 & str,const char * cStr)5878 static bool compareString8AndCString(const String8& str, const char* cStr) {
5879 return strcmp(str.string(), cStr) < 0;
5880 }
5881
getLocales(Vector<String8> * locales,bool includeSystemLocales) const5882 void ResTable::getLocales(Vector<String8>* locales, bool includeSystemLocales) const {
5883 char locale[RESTABLE_MAX_LOCALE_LEN];
5884
5885 forEachConfiguration(false, false, includeSystemLocales, [&](const ResTable_config& cfg) {
5886 if (cfg.locale != 0) {
5887 cfg.getBcp47Locale(locale);
5888
5889 const auto beginIter = locales->begin();
5890 const auto endIter = locales->end();
5891
5892 auto iter = std::lower_bound(beginIter, endIter, locale, compareString8AndCString);
5893 if (iter == endIter || strcmp(iter->string(), locale) != 0) {
5894 locales->insertAt(String8(locale), std::distance(beginIter, iter));
5895 }
5896 }
5897 });
5898 }
5899
StringPoolRef(const ResStringPool * pool,uint32_t index)5900 StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
5901 : mPool(pool), mIndex(index) {}
5902
StringPoolRef()5903 StringPoolRef::StringPoolRef()
5904 : mPool(NULL), mIndex(0) {}
5905
string8(size_t * outLen) const5906 const char* StringPoolRef::string8(size_t* outLen) const {
5907 if (mPool != NULL) {
5908 return mPool->string8At(mIndex, outLen);
5909 }
5910 if (outLen != NULL) {
5911 *outLen = 0;
5912 }
5913 return NULL;
5914 }
5915
string16(size_t * outLen) const5916 const char16_t* StringPoolRef::string16(size_t* outLen) const {
5917 if (mPool != NULL) {
5918 return mPool->stringAt(mIndex, outLen);
5919 }
5920 if (outLen != NULL) {
5921 *outLen = 0;
5922 }
5923 return NULL;
5924 }
5925
getResourceFlags(uint32_t resID,uint32_t * outFlags) const5926 bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
5927 if (mError != NO_ERROR) {
5928 return false;
5929 }
5930
5931 const ssize_t p = getResourcePackageIndex(resID);
5932 const int t = Res_GETTYPE(resID);
5933 const int e = Res_GETENTRY(resID);
5934
5935 if (p < 0) {
5936 if (Res_GETPACKAGE(resID)+1 == 0) {
5937 ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
5938 } else {
5939 ALOGW("No known package when getting flags for resource number 0x%08x", resID);
5940 }
5941 return false;
5942 }
5943 if (t < 0) {
5944 ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
5945 return false;
5946 }
5947
5948 const PackageGroup* const grp = mPackageGroups[p];
5949 if (grp == NULL) {
5950 ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
5951 return false;
5952 }
5953
5954 Entry entry;
5955 status_t err = getEntry(grp, t, e, NULL, &entry);
5956 if (err != NO_ERROR) {
5957 return false;
5958 }
5959
5960 *outFlags = entry.specFlags;
5961 return true;
5962 }
5963
getEntry(const PackageGroup * packageGroup,int typeIndex,int entryIndex,const ResTable_config * config,Entry * outEntry) const5964 status_t ResTable::getEntry(
5965 const PackageGroup* packageGroup, int typeIndex, int entryIndex,
5966 const ResTable_config* config,
5967 Entry* outEntry) const
5968 {
5969 const TypeList& typeList = packageGroup->types[typeIndex];
5970 if (typeList.isEmpty()) {
5971 ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
5972 return BAD_TYPE;
5973 }
5974
5975 const ResTable_type* bestType = NULL;
5976 uint32_t bestOffset = ResTable_type::NO_ENTRY;
5977 const Package* bestPackage = NULL;
5978 uint32_t specFlags = 0;
5979 uint8_t actualTypeIndex = typeIndex;
5980 ResTable_config bestConfig;
5981 memset(&bestConfig, 0, sizeof(bestConfig));
5982
5983 // Iterate over the Types of each package.
5984 const size_t typeCount = typeList.size();
5985 for (size_t i = 0; i < typeCount; i++) {
5986 const Type* const typeSpec = typeList[i];
5987
5988 int realEntryIndex = entryIndex;
5989 int realTypeIndex = typeIndex;
5990 bool currentTypeIsOverlay = false;
5991
5992 // Runtime overlay packages provide a mapping of app resource
5993 // ID to package resource ID.
5994 if (typeSpec->idmapEntries.hasEntries()) {
5995 uint16_t overlayEntryIndex;
5996 if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
5997 // No such mapping exists
5998 continue;
5999 }
6000 realEntryIndex = overlayEntryIndex;
6001 realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
6002 currentTypeIsOverlay = true;
6003 }
6004
6005 if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
6006 ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
6007 Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
6008 entryIndex, static_cast<int>(typeSpec->entryCount));
6009 // We should normally abort here, but some legacy apps declare
6010 // resources in the 'android' package (old bug in AAPT).
6011 continue;
6012 }
6013
6014 // Aggregate all the flags for each package that defines this entry.
6015 if (typeSpec->typeSpecFlags != NULL) {
6016 specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
6017 } else {
6018 specFlags = -1;
6019 }
6020
6021 const Vector<const ResTable_type*>* candidateConfigs = &typeSpec->configs;
6022
6023 std::shared_ptr<Vector<const ResTable_type*>> filteredConfigs;
6024 if (config && memcmp(&mParams, config, sizeof(mParams)) == 0) {
6025 // Grab the lock first so we can safely get the current filtered list.
6026 AutoMutex _lock(mFilteredConfigLock);
6027
6028 // This configuration is equal to the one we have previously cached for,
6029 // so use the filtered configs.
6030
6031 const TypeCacheEntry& cacheEntry = packageGroup->typeCacheEntries[typeIndex];
6032 if (i < cacheEntry.filteredConfigs.size()) {
6033 if (cacheEntry.filteredConfigs[i]) {
6034 // Grab a reference to the shared_ptr so it doesn't get destroyed while
6035 // going through this list.
6036 filteredConfigs = cacheEntry.filteredConfigs[i];
6037
6038 // Use this filtered list.
6039 candidateConfigs = filteredConfigs.get();
6040 }
6041 }
6042 }
6043
6044 const size_t numConfigs = candidateConfigs->size();
6045 for (size_t c = 0; c < numConfigs; c++) {
6046 const ResTable_type* const thisType = candidateConfigs->itemAt(c);
6047 if (thisType == NULL) {
6048 continue;
6049 }
6050
6051 ResTable_config thisConfig;
6052 thisConfig.copyFromDtoH(thisType->config);
6053
6054 // Check to make sure this one is valid for the current parameters.
6055 if (config != NULL && !thisConfig.match(*config)) {
6056 continue;
6057 }
6058
6059 // Check if there is the desired entry in this type.
6060 const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
6061 reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
6062
6063 uint32_t thisOffset = dtohl(eindex[realEntryIndex]);
6064 if (thisOffset == ResTable_type::NO_ENTRY) {
6065 // There is no entry for this index and configuration.
6066 continue;
6067 }
6068
6069 if (bestType != NULL) {
6070 // Check if this one is less specific than the last found. If so,
6071 // we will skip it. We check starting with things we most care
6072 // about to those we least care about.
6073 if (!thisConfig.isBetterThan(bestConfig, config)) {
6074 if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
6075 continue;
6076 }
6077 }
6078 }
6079
6080 bestType = thisType;
6081 bestOffset = thisOffset;
6082 bestConfig = thisConfig;
6083 bestPackage = typeSpec->package;
6084 actualTypeIndex = realTypeIndex;
6085
6086 // If no config was specified, any type will do, so skip
6087 if (config == NULL) {
6088 break;
6089 }
6090 }
6091 }
6092
6093 if (bestType == NULL) {
6094 return BAD_INDEX;
6095 }
6096
6097 bestOffset += dtohl(bestType->entriesStart);
6098
6099 if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
6100 ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
6101 bestOffset, dtohl(bestType->header.size));
6102 return BAD_TYPE;
6103 }
6104 if ((bestOffset & 0x3) != 0) {
6105 ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
6106 return BAD_TYPE;
6107 }
6108
6109 const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
6110 reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
6111 if (dtohs(entry->size) < sizeof(*entry)) {
6112 ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
6113 return BAD_TYPE;
6114 }
6115
6116 if (outEntry != NULL) {
6117 outEntry->entry = entry;
6118 outEntry->config = bestConfig;
6119 outEntry->type = bestType;
6120 outEntry->specFlags = specFlags;
6121 outEntry->package = bestPackage;
6122 outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
6123 outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
6124 }
6125 return NO_ERROR;
6126 }
6127
parsePackage(const ResTable_package * const pkg,const Header * const header,bool appAsLib,bool isSystemAsset)6128 status_t ResTable::parsePackage(const ResTable_package* const pkg,
6129 const Header* const header, bool appAsLib, bool isSystemAsset)
6130 {
6131 const uint8_t* base = (const uint8_t*)pkg;
6132 status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
6133 header->dataEnd, "ResTable_package");
6134 if (err != NO_ERROR) {
6135 return (mError=err);
6136 }
6137
6138 const uint32_t pkgSize = dtohl(pkg->header.size);
6139
6140 if (dtohl(pkg->typeStrings) >= pkgSize) {
6141 ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
6142 dtohl(pkg->typeStrings), pkgSize);
6143 return (mError=BAD_TYPE);
6144 }
6145 if ((dtohl(pkg->typeStrings)&0x3) != 0) {
6146 ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
6147 dtohl(pkg->typeStrings));
6148 return (mError=BAD_TYPE);
6149 }
6150 if (dtohl(pkg->keyStrings) >= pkgSize) {
6151 ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
6152 dtohl(pkg->keyStrings), pkgSize);
6153 return (mError=BAD_TYPE);
6154 }
6155 if ((dtohl(pkg->keyStrings)&0x3) != 0) {
6156 ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
6157 dtohl(pkg->keyStrings));
6158 return (mError=BAD_TYPE);
6159 }
6160
6161 uint32_t id = dtohl(pkg->id);
6162 KeyedVector<uint8_t, IdmapEntries> idmapEntries;
6163
6164 if (header->resourceIDMap != NULL) {
6165 uint8_t targetPackageId = 0;
6166 status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
6167 if (err != NO_ERROR) {
6168 ALOGW("Overlay is broken");
6169 return (mError=err);
6170 }
6171 id = targetPackageId;
6172 }
6173
6174 if (id >= 256) {
6175 LOG_ALWAYS_FATAL("Package id out of range");
6176 return NO_ERROR;
6177 } else if (id == 0 || (id == 0x7f && appAsLib) || isSystemAsset) {
6178 // This is a library or a system asset, so assign an ID
6179 id = mNextPackageId++;
6180 }
6181
6182 PackageGroup* group = NULL;
6183 Package* package = new Package(this, header, pkg);
6184 if (package == NULL) {
6185 return (mError=NO_MEMORY);
6186 }
6187
6188 err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
6189 header->dataEnd-(base+dtohl(pkg->typeStrings)));
6190 if (err != NO_ERROR) {
6191 delete group;
6192 delete package;
6193 return (mError=err);
6194 }
6195
6196 err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
6197 header->dataEnd-(base+dtohl(pkg->keyStrings)));
6198 if (err != NO_ERROR) {
6199 delete group;
6200 delete package;
6201 return (mError=err);
6202 }
6203
6204 size_t idx = mPackageMap[id];
6205 if (idx == 0) {
6206 idx = mPackageGroups.size() + 1;
6207
6208 char16_t tmpName[sizeof(pkg->name)/sizeof(pkg->name[0])];
6209 strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(pkg->name[0]));
6210 group = new PackageGroup(this, String16(tmpName), id, appAsLib, isSystemAsset);
6211 if (group == NULL) {
6212 delete package;
6213 return (mError=NO_MEMORY);
6214 }
6215
6216 err = mPackageGroups.add(group);
6217 if (err < NO_ERROR) {
6218 return (mError=err);
6219 }
6220
6221 mPackageMap[id] = static_cast<uint8_t>(idx);
6222
6223 // Find all packages that reference this package
6224 size_t N = mPackageGroups.size();
6225 for (size_t i = 0; i < N; i++) {
6226 mPackageGroups[i]->dynamicRefTable.addMapping(
6227 group->name, static_cast<uint8_t>(group->id));
6228 }
6229 } else {
6230 group = mPackageGroups.itemAt(idx - 1);
6231 if (group == NULL) {
6232 return (mError=UNKNOWN_ERROR);
6233 }
6234 }
6235
6236 err = group->packages.add(package);
6237 if (err < NO_ERROR) {
6238 return (mError=err);
6239 }
6240
6241 // Iterate through all chunks.
6242 const ResChunk_header* chunk =
6243 (const ResChunk_header*)(((const uint8_t*)pkg)
6244 + dtohs(pkg->header.headerSize));
6245 const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
6246 while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
6247 ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
6248 if (kDebugTableNoisy) {
6249 ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
6250 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
6251 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
6252 }
6253 const size_t csize = dtohl(chunk->size);
6254 const uint16_t ctype = dtohs(chunk->type);
6255 if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
6256 const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
6257 err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
6258 endPos, "ResTable_typeSpec");
6259 if (err != NO_ERROR) {
6260 return (mError=err);
6261 }
6262
6263 const size_t typeSpecSize = dtohl(typeSpec->header.size);
6264 const size_t newEntryCount = dtohl(typeSpec->entryCount);
6265
6266 if (kDebugLoadTableNoisy) {
6267 ALOGI("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
6268 (void*)(base-(const uint8_t*)chunk),
6269 dtohs(typeSpec->header.type),
6270 dtohs(typeSpec->header.headerSize),
6271 (void*)typeSpecSize);
6272 }
6273 // look for block overrun or int overflow when multiplying by 4
6274 if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
6275 || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
6276 > typeSpecSize)) {
6277 ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
6278 (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6279 (void*)typeSpecSize);
6280 return (mError=BAD_TYPE);
6281 }
6282
6283 if (typeSpec->id == 0) {
6284 ALOGW("ResTable_type has an id of 0.");
6285 return (mError=BAD_TYPE);
6286 }
6287
6288 if (newEntryCount > 0) {
6289 uint8_t typeIndex = typeSpec->id - 1;
6290 ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
6291 if (idmapIndex >= 0) {
6292 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6293 }
6294
6295 TypeList& typeList = group->types.editItemAt(typeIndex);
6296 if (!typeList.isEmpty()) {
6297 const Type* existingType = typeList[0];
6298 if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
6299 ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
6300 (int) newEntryCount, (int) existingType->entryCount);
6301 // We should normally abort here, but some legacy apps declare
6302 // resources in the 'android' package (old bug in AAPT).
6303 }
6304 }
6305
6306 Type* t = new Type(header, package, newEntryCount);
6307 t->typeSpec = typeSpec;
6308 t->typeSpecFlags = (const uint32_t*)(
6309 ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
6310 if (idmapIndex >= 0) {
6311 t->idmapEntries = idmapEntries[idmapIndex];
6312 }
6313 typeList.add(t);
6314 group->largestTypeId = max(group->largestTypeId, typeSpec->id);
6315 } else {
6316 ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
6317 }
6318
6319 } else if (ctype == RES_TABLE_TYPE_TYPE) {
6320 const ResTable_type* type = (const ResTable_type*)(chunk);
6321 err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
6322 endPos, "ResTable_type");
6323 if (err != NO_ERROR) {
6324 return (mError=err);
6325 }
6326
6327 const uint32_t typeSize = dtohl(type->header.size);
6328 const size_t newEntryCount = dtohl(type->entryCount);
6329
6330 if (kDebugLoadTableNoisy) {
6331 printf("Type off %p: type=0x%x, headerSize=0x%x, size=%u\n",
6332 (void*)(base-(const uint8_t*)chunk),
6333 dtohs(type->header.type),
6334 dtohs(type->header.headerSize),
6335 typeSize);
6336 }
6337 if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount) > typeSize) {
6338 ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
6339 (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6340 typeSize);
6341 return (mError=BAD_TYPE);
6342 }
6343
6344 if (newEntryCount != 0
6345 && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
6346 ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
6347 dtohl(type->entriesStart), typeSize);
6348 return (mError=BAD_TYPE);
6349 }
6350
6351 if (type->id == 0) {
6352 ALOGW("ResTable_type has an id of 0.");
6353 return (mError=BAD_TYPE);
6354 }
6355
6356 if (newEntryCount > 0) {
6357 uint8_t typeIndex = type->id - 1;
6358 ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
6359 if (idmapIndex >= 0) {
6360 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6361 }
6362
6363 TypeList& typeList = group->types.editItemAt(typeIndex);
6364 if (typeList.isEmpty()) {
6365 ALOGE("No TypeSpec for type %d", type->id);
6366 return (mError=BAD_TYPE);
6367 }
6368
6369 Type* t = typeList.editItemAt(typeList.size() - 1);
6370 if (newEntryCount != t->entryCount) {
6371 ALOGE("ResTable_type entry count inconsistent: given %d, previously %d",
6372 (int)newEntryCount, (int)t->entryCount);
6373 return (mError=BAD_TYPE);
6374 }
6375
6376 if (t->package != package) {
6377 ALOGE("No TypeSpec for type %d", type->id);
6378 return (mError=BAD_TYPE);
6379 }
6380
6381 t->configs.add(type);
6382
6383 if (kDebugTableGetEntry) {
6384 ResTable_config thisConfig;
6385 thisConfig.copyFromDtoH(type->config);
6386 ALOGI("Adding config to type %d: %s\n", type->id,
6387 thisConfig.toString().string());
6388 }
6389 } else {
6390 ALOGV("Skipping empty ResTable_type for type %d", type->id);
6391 }
6392
6393 } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
6394 if (group->dynamicRefTable.entries().size() == 0) {
6395 status_t err = group->dynamicRefTable.load((const ResTable_lib_header*) chunk);
6396 if (err != NO_ERROR) {
6397 return (mError=err);
6398 }
6399
6400 // Fill in the reference table with the entries we already know about.
6401 size_t N = mPackageGroups.size();
6402 for (size_t i = 0; i < N; i++) {
6403 group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
6404 }
6405 } else {
6406 ALOGW("Found multiple library tables, ignoring...");
6407 }
6408 } else {
6409 status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
6410 endPos, "ResTable_package:unknown");
6411 if (err != NO_ERROR) {
6412 return (mError=err);
6413 }
6414 }
6415 chunk = (const ResChunk_header*)
6416 (((const uint8_t*)chunk) + csize);
6417 }
6418
6419 return NO_ERROR;
6420 }
6421
DynamicRefTable(uint8_t packageId,bool appAsLib)6422 DynamicRefTable::DynamicRefTable(uint8_t packageId, bool appAsLib)
6423 : mAssignedPackageId(packageId)
6424 , mAppAsLib(appAsLib)
6425 {
6426 memset(mLookupTable, 0, sizeof(mLookupTable));
6427
6428 // Reserved package ids
6429 mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
6430 mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
6431 }
6432
load(const ResTable_lib_header * const header)6433 status_t DynamicRefTable::load(const ResTable_lib_header* const header)
6434 {
6435 const uint32_t entryCount = dtohl(header->count);
6436 const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
6437 const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
6438 if (sizeOfEntries > expectedSize) {
6439 ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
6440 expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
6441 return UNKNOWN_ERROR;
6442 }
6443
6444 const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
6445 dtohl(header->header.headerSize));
6446 for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
6447 uint32_t packageId = dtohl(entry->packageId);
6448 char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
6449 strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
6450 if (kDebugLibNoisy) {
6451 ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
6452 dtohl(entry->packageId));
6453 }
6454 if (packageId >= 256) {
6455 ALOGE("Bad package id 0x%08x", packageId);
6456 return UNKNOWN_ERROR;
6457 }
6458 mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
6459 entry = entry + 1;
6460 }
6461 return NO_ERROR;
6462 }
6463
addMappings(const DynamicRefTable & other)6464 status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
6465 if (mAssignedPackageId != other.mAssignedPackageId) {
6466 return UNKNOWN_ERROR;
6467 }
6468
6469 const size_t entryCount = other.mEntries.size();
6470 for (size_t i = 0; i < entryCount; i++) {
6471 ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
6472 if (index < 0) {
6473 mEntries.add(other.mEntries.keyAt(i), other.mEntries[i]);
6474 } else {
6475 if (other.mEntries[i] != mEntries[index]) {
6476 return UNKNOWN_ERROR;
6477 }
6478 }
6479 }
6480
6481 // Merge the lookup table. No entry can conflict
6482 // (value of 0 means not set).
6483 for (size_t i = 0; i < 256; i++) {
6484 if (mLookupTable[i] != other.mLookupTable[i]) {
6485 if (mLookupTable[i] == 0) {
6486 mLookupTable[i] = other.mLookupTable[i];
6487 } else if (other.mLookupTable[i] != 0) {
6488 return UNKNOWN_ERROR;
6489 }
6490 }
6491 }
6492 return NO_ERROR;
6493 }
6494
addMapping(const String16 & packageName,uint8_t packageId)6495 status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
6496 {
6497 ssize_t index = mEntries.indexOfKey(packageName);
6498 if (index < 0) {
6499 return UNKNOWN_ERROR;
6500 }
6501 mLookupTable[mEntries.valueAt(index)] = packageId;
6502 return NO_ERROR;
6503 }
6504
lookupResourceId(uint32_t * resId) const6505 status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
6506 uint32_t res = *resId;
6507 size_t packageId = Res_GETPACKAGE(res) + 1;
6508
6509 if (packageId == APP_PACKAGE_ID && !mAppAsLib) {
6510 // No lookup needs to be done, app package IDs are absolute.
6511 return NO_ERROR;
6512 }
6513
6514 if (packageId == 0 || (packageId == APP_PACKAGE_ID && mAppAsLib)) {
6515 // The package ID is 0x00. That means that a shared library is accessing
6516 // its own local resource.
6517 // Or if app resource is loaded as shared library, the resource which has
6518 // app package Id is local resources.
6519 // so we fix up those resources with the calling package ID.
6520 *resId = (0xFFFFFF & (*resId)) | (((uint32_t) mAssignedPackageId) << 24);
6521 return NO_ERROR;
6522 }
6523
6524 // Do a proper lookup.
6525 uint8_t translatedId = mLookupTable[packageId];
6526 if (translatedId == 0) {
6527 ALOGV("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
6528 (uint8_t)mAssignedPackageId, (uint8_t)packageId);
6529 for (size_t i = 0; i < 256; i++) {
6530 if (mLookupTable[i] != 0) {
6531 ALOGV("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
6532 }
6533 }
6534 return UNKNOWN_ERROR;
6535 }
6536
6537 *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
6538 return NO_ERROR;
6539 }
6540
lookupResourceValue(Res_value * value) const6541 status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
6542 uint8_t resolvedType = Res_value::TYPE_REFERENCE;
6543 switch (value->dataType) {
6544 case Res_value::TYPE_ATTRIBUTE:
6545 resolvedType = Res_value::TYPE_ATTRIBUTE;
6546 // fallthrough
6547 case Res_value::TYPE_REFERENCE:
6548 if (!mAppAsLib) {
6549 return NO_ERROR;
6550 }
6551
6552 // If the package is loaded as shared library, the resource reference
6553 // also need to be fixed.
6554 break;
6555 case Res_value::TYPE_DYNAMIC_ATTRIBUTE:
6556 resolvedType = Res_value::TYPE_ATTRIBUTE;
6557 // fallthrough
6558 case Res_value::TYPE_DYNAMIC_REFERENCE:
6559 break;
6560 default:
6561 return NO_ERROR;
6562 }
6563
6564 status_t err = lookupResourceId(&value->data);
6565 if (err != NO_ERROR) {
6566 return err;
6567 }
6568
6569 value->dataType = resolvedType;
6570 return NO_ERROR;
6571 }
6572
6573 struct IdmapTypeMap {
6574 ssize_t overlayTypeId;
6575 size_t entryOffset;
6576 Vector<uint32_t> entryMap;
6577 };
6578
createIdmap(const ResTable & overlay,uint32_t targetCrc,uint32_t overlayCrc,const char * targetPath,const char * overlayPath,void ** outData,size_t * outSize) const6579 status_t ResTable::createIdmap(const ResTable& overlay,
6580 uint32_t targetCrc, uint32_t overlayCrc,
6581 const char* targetPath, const char* overlayPath,
6582 void** outData, size_t* outSize) const
6583 {
6584 // see README for details on the format of map
6585 if (mPackageGroups.size() == 0) {
6586 ALOGW("idmap: target package has no package groups, cannot create idmap\n");
6587 return UNKNOWN_ERROR;
6588 }
6589
6590 if (mPackageGroups[0]->packages.size() == 0) {
6591 ALOGW("idmap: target package has no packages in its first package group, "
6592 "cannot create idmap\n");
6593 return UNKNOWN_ERROR;
6594 }
6595
6596 KeyedVector<uint8_t, IdmapTypeMap> map;
6597
6598 // overlaid packages are assumed to contain only one package group
6599 const PackageGroup* pg = mPackageGroups[0];
6600
6601 // starting size is header
6602 *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
6603
6604 // target package id and number of types in map
6605 *outSize += 2 * sizeof(uint16_t);
6606
6607 // overlay packages are assumed to contain only one package group
6608 const ResTable_package* overlayPackageStruct = overlay.mPackageGroups[0]->packages[0]->package;
6609 char16_t tmpName[sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0])];
6610 strcpy16_dtoh(tmpName, overlayPackageStruct->name, sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0]));
6611 const String16 overlayPackage(tmpName);
6612
6613 for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
6614 const TypeList& typeList = pg->types[typeIndex];
6615 if (typeList.isEmpty()) {
6616 continue;
6617 }
6618
6619 const Type* typeConfigs = typeList[0];
6620
6621 IdmapTypeMap typeMap;
6622 typeMap.overlayTypeId = -1;
6623 typeMap.entryOffset = 0;
6624
6625 for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
6626 uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
6627 resource_name resName;
6628 if (!this->getResourceName(resID, false, &resName)) {
6629 if (typeMap.entryMap.isEmpty()) {
6630 typeMap.entryOffset++;
6631 }
6632 continue;
6633 }
6634
6635 const String16 overlayType(resName.type, resName.typeLen);
6636 const String16 overlayName(resName.name, resName.nameLen);
6637 uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
6638 overlayName.size(),
6639 overlayType.string(),
6640 overlayType.size(),
6641 overlayPackage.string(),
6642 overlayPackage.size());
6643 if (overlayResID == 0) {
6644 if (typeMap.entryMap.isEmpty()) {
6645 typeMap.entryOffset++;
6646 }
6647 continue;
6648 }
6649
6650 if (typeMap.overlayTypeId == -1) {
6651 typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
6652 }
6653
6654 if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
6655 ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
6656 " but entries should map to resources of type %02zx",
6657 resID, overlayResID, typeMap.overlayTypeId);
6658 return BAD_TYPE;
6659 }
6660
6661 if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
6662 // pad with 0xffffffff's (indicating non-existing entries) before adding this entry
6663 size_t index = typeMap.entryMap.size();
6664 size_t numItems = entryIndex - (typeMap.entryOffset + index);
6665 if (typeMap.entryMap.insertAt(0xffffffff, index, numItems) < 0) {
6666 return NO_MEMORY;
6667 }
6668 }
6669 typeMap.entryMap.add(Res_GETENTRY(overlayResID));
6670 }
6671
6672 if (!typeMap.entryMap.isEmpty()) {
6673 if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
6674 return NO_MEMORY;
6675 }
6676 *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
6677 }
6678 }
6679
6680 if (map.isEmpty()) {
6681 ALOGW("idmap: no resources in overlay package present in base package");
6682 return UNKNOWN_ERROR;
6683 }
6684
6685 if ((*outData = malloc(*outSize)) == NULL) {
6686 return NO_MEMORY;
6687 }
6688
6689 uint32_t* data = (uint32_t*)*outData;
6690 *data++ = htodl(IDMAP_MAGIC);
6691 *data++ = htodl(IDMAP_CURRENT_VERSION);
6692 *data++ = htodl(targetCrc);
6693 *data++ = htodl(overlayCrc);
6694 const char* paths[] = { targetPath, overlayPath };
6695 for (int j = 0; j < 2; ++j) {
6696 char* p = (char*)data;
6697 const char* path = paths[j];
6698 const size_t I = strlen(path);
6699 if (I > 255) {
6700 ALOGV("path exceeds expected 255 characters: %s\n", path);
6701 return UNKNOWN_ERROR;
6702 }
6703 for (size_t i = 0; i < 256; ++i) {
6704 *p++ = i < I ? path[i] : '\0';
6705 }
6706 data += 256 / sizeof(uint32_t);
6707 }
6708 const size_t mapSize = map.size();
6709 uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
6710 *typeData++ = htods(pg->id);
6711 *typeData++ = htods(mapSize);
6712 for (size_t i = 0; i < mapSize; ++i) {
6713 uint8_t targetTypeId = map.keyAt(i);
6714 const IdmapTypeMap& typeMap = map[i];
6715 *typeData++ = htods(targetTypeId + 1);
6716 *typeData++ = htods(typeMap.overlayTypeId);
6717 *typeData++ = htods(typeMap.entryMap.size());
6718 *typeData++ = htods(typeMap.entryOffset);
6719
6720 const size_t entryCount = typeMap.entryMap.size();
6721 uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
6722 for (size_t j = 0; j < entryCount; j++) {
6723 entries[j] = htodl(typeMap.entryMap[j]);
6724 }
6725 typeData += entryCount * 2;
6726 }
6727
6728 return NO_ERROR;
6729 }
6730
getIdmapInfo(const void * idmap,size_t sizeBytes,uint32_t * pVersion,uint32_t * pTargetCrc,uint32_t * pOverlayCrc,String8 * pTargetPath,String8 * pOverlayPath)6731 bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
6732 uint32_t* pVersion,
6733 uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
6734 String8* pTargetPath, String8* pOverlayPath)
6735 {
6736 const uint32_t* map = (const uint32_t*)idmap;
6737 if (!assertIdmapHeader(map, sizeBytes)) {
6738 return false;
6739 }
6740 if (pVersion) {
6741 *pVersion = dtohl(map[1]);
6742 }
6743 if (pTargetCrc) {
6744 *pTargetCrc = dtohl(map[2]);
6745 }
6746 if (pOverlayCrc) {
6747 *pOverlayCrc = dtohl(map[3]);
6748 }
6749 if (pTargetPath) {
6750 pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
6751 }
6752 if (pOverlayPath) {
6753 pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
6754 }
6755 return true;
6756 }
6757
6758
6759 #define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
6760
6761 #define CHAR16_ARRAY_EQ(constant, var, len) \
6762 ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
6763
print_complex(uint32_t complex,bool isFraction)6764 static void print_complex(uint32_t complex, bool isFraction)
6765 {
6766 const float MANTISSA_MULT =
6767 1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
6768 const float RADIX_MULTS[] = {
6769 1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
6770 1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
6771 };
6772
6773 float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
6774 <<Res_value::COMPLEX_MANTISSA_SHIFT))
6775 * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
6776 & Res_value::COMPLEX_RADIX_MASK];
6777 printf("%f", value);
6778
6779 if (!isFraction) {
6780 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6781 case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
6782 case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
6783 case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
6784 case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
6785 case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
6786 case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
6787 default: printf(" (unknown unit)"); break;
6788 }
6789 } else {
6790 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6791 case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
6792 case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
6793 default: printf(" (unknown unit)"); break;
6794 }
6795 }
6796 }
6797
6798 // Normalize a string for output
normalizeForOutput(const char * input)6799 String8 ResTable::normalizeForOutput( const char *input )
6800 {
6801 String8 ret;
6802 char buff[2];
6803 buff[1] = '\0';
6804
6805 while (*input != '\0') {
6806 switch (*input) {
6807 // All interesting characters are in the ASCII zone, so we are making our own lives
6808 // easier by scanning the string one byte at a time.
6809 case '\\':
6810 ret += "\\\\";
6811 break;
6812 case '\n':
6813 ret += "\\n";
6814 break;
6815 case '"':
6816 ret += "\\\"";
6817 break;
6818 default:
6819 buff[0] = *input;
6820 ret += buff;
6821 break;
6822 }
6823
6824 input++;
6825 }
6826
6827 return ret;
6828 }
6829
print_value(const Package * pkg,const Res_value & value) const6830 void ResTable::print_value(const Package* pkg, const Res_value& value) const
6831 {
6832 if (value.dataType == Res_value::TYPE_NULL) {
6833 if (value.data == Res_value::DATA_NULL_UNDEFINED) {
6834 printf("(null)\n");
6835 } else if (value.data == Res_value::DATA_NULL_EMPTY) {
6836 printf("(null empty)\n");
6837 } else {
6838 // This should never happen.
6839 printf("(null) 0x%08x\n", value.data);
6840 }
6841 } else if (value.dataType == Res_value::TYPE_REFERENCE) {
6842 printf("(reference) 0x%08x\n", value.data);
6843 } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
6844 printf("(dynamic reference) 0x%08x\n", value.data);
6845 } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
6846 printf("(attribute) 0x%08x\n", value.data);
6847 } else if (value.dataType == Res_value::TYPE_DYNAMIC_ATTRIBUTE) {
6848 printf("(dynamic attribute) 0x%08x\n", value.data);
6849 } else if (value.dataType == Res_value::TYPE_STRING) {
6850 size_t len;
6851 const char* str8 = pkg->header->values.string8At(
6852 value.data, &len);
6853 if (str8 != NULL) {
6854 printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
6855 } else {
6856 const char16_t* str16 = pkg->header->values.stringAt(
6857 value.data, &len);
6858 if (str16 != NULL) {
6859 printf("(string16) \"%s\"\n",
6860 normalizeForOutput(String8(str16, len).string()).string());
6861 } else {
6862 printf("(string) null\n");
6863 }
6864 }
6865 } else if (value.dataType == Res_value::TYPE_FLOAT) {
6866 printf("(float) %g\n", *(const float*)&value.data);
6867 } else if (value.dataType == Res_value::TYPE_DIMENSION) {
6868 printf("(dimension) ");
6869 print_complex(value.data, false);
6870 printf("\n");
6871 } else if (value.dataType == Res_value::TYPE_FRACTION) {
6872 printf("(fraction) ");
6873 print_complex(value.data, true);
6874 printf("\n");
6875 } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
6876 || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
6877 printf("(color) #%08x\n", value.data);
6878 } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
6879 printf("(boolean) %s\n", value.data ? "true" : "false");
6880 } else if (value.dataType >= Res_value::TYPE_FIRST_INT
6881 || value.dataType <= Res_value::TYPE_LAST_INT) {
6882 printf("(int) 0x%08x or %d\n", value.data, value.data);
6883 } else {
6884 printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
6885 (int)value.dataType, (int)value.data,
6886 (int)value.size, (int)value.res0);
6887 }
6888 }
6889
print(bool inclValues) const6890 void ResTable::print(bool inclValues) const
6891 {
6892 if (mError != 0) {
6893 printf("mError=0x%x (%s)\n", mError, strerror(mError));
6894 }
6895 size_t pgCount = mPackageGroups.size();
6896 printf("Package Groups (%d)\n", (int)pgCount);
6897 for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
6898 const PackageGroup* pg = mPackageGroups[pgIndex];
6899 printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
6900 (int)pgIndex, pg->id, (int)pg->packages.size(),
6901 String8(pg->name).string());
6902
6903 const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
6904 const size_t refEntryCount = refEntries.size();
6905 if (refEntryCount > 0) {
6906 printf(" DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
6907 for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
6908 printf(" 0x%02x -> %s\n",
6909 refEntries.valueAt(refIndex),
6910 String8(refEntries.keyAt(refIndex)).string());
6911 }
6912 printf("\n");
6913 }
6914
6915 int packageId = pg->id;
6916 size_t pkgCount = pg->packages.size();
6917 for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
6918 const Package* pkg = pg->packages[pkgIndex];
6919 // Use a package's real ID, since the ID may have been assigned
6920 // if this package is a shared library.
6921 packageId = pkg->package->id;
6922 char16_t tmpName[sizeof(pkg->package->name)/sizeof(pkg->package->name[0])];
6923 strcpy16_dtoh(tmpName, pkg->package->name, sizeof(pkg->package->name)/sizeof(pkg->package->name[0]));
6924 printf(" Package %d id=0x%02x name=%s\n", (int)pkgIndex,
6925 pkg->package->id, String8(tmpName).string());
6926 }
6927
6928 for (size_t typeIndex=0; typeIndex < pg->types.size(); typeIndex++) {
6929 const TypeList& typeList = pg->types[typeIndex];
6930 if (typeList.isEmpty()) {
6931 continue;
6932 }
6933 const Type* typeConfigs = typeList[0];
6934 const size_t NTC = typeConfigs->configs.size();
6935 printf(" type %d configCount=%d entryCount=%d\n",
6936 (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
6937 if (typeConfigs->typeSpecFlags != NULL) {
6938 for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
6939 uint32_t resID = (0xff000000 & ((packageId)<<24))
6940 | (0x00ff0000 & ((typeIndex+1)<<16))
6941 | (0x0000ffff & (entryIndex));
6942 // Since we are creating resID without actually
6943 // iterating over them, we have no idea which is a
6944 // dynamic reference. We must check.
6945 if (packageId == 0) {
6946 pg->dynamicRefTable.lookupResourceId(&resID);
6947 }
6948
6949 resource_name resName;
6950 if (this->getResourceName(resID, true, &resName)) {
6951 String8 type8;
6952 String8 name8;
6953 if (resName.type8 != NULL) {
6954 type8 = String8(resName.type8, resName.typeLen);
6955 } else {
6956 type8 = String8(resName.type, resName.typeLen);
6957 }
6958 if (resName.name8 != NULL) {
6959 name8 = String8(resName.name8, resName.nameLen);
6960 } else {
6961 name8 = String8(resName.name, resName.nameLen);
6962 }
6963 printf(" spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
6964 resID,
6965 CHAR16_TO_CSTR(resName.package, resName.packageLen),
6966 type8.string(), name8.string(),
6967 dtohl(typeConfigs->typeSpecFlags[entryIndex]));
6968 } else {
6969 printf(" INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
6970 }
6971 }
6972 }
6973 for (size_t configIndex=0; configIndex<NTC; configIndex++) {
6974 const ResTable_type* type = typeConfigs->configs[configIndex];
6975 if ((((uint64_t)type)&0x3) != 0) {
6976 printf(" NON-INTEGER ResTable_type ADDRESS: %p\n", type);
6977 continue;
6978 }
6979
6980 // Always copy the config, as fields get added and we need to
6981 // set the defaults.
6982 ResTable_config thisConfig;
6983 thisConfig.copyFromDtoH(type->config);
6984
6985 String8 configStr = thisConfig.toString();
6986 printf(" config %s:\n", configStr.size() > 0
6987 ? configStr.string() : "(default)");
6988 size_t entryCount = dtohl(type->entryCount);
6989 uint32_t entriesStart = dtohl(type->entriesStart);
6990 if ((entriesStart&0x3) != 0) {
6991 printf(" NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n", entriesStart);
6992 continue;
6993 }
6994 uint32_t typeSize = dtohl(type->header.size);
6995 if ((typeSize&0x3) != 0) {
6996 printf(" NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
6997 continue;
6998 }
6999 for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
7000 const uint32_t* const eindex = (const uint32_t*)
7001 (((const uint8_t*)type) + dtohs(type->header.headerSize));
7002
7003 uint32_t thisOffset = dtohl(eindex[entryIndex]);
7004 if (thisOffset == ResTable_type::NO_ENTRY) {
7005 continue;
7006 }
7007
7008 uint32_t resID = (0xff000000 & ((packageId)<<24))
7009 | (0x00ff0000 & ((typeIndex+1)<<16))
7010 | (0x0000ffff & (entryIndex));
7011 if (packageId == 0) {
7012 pg->dynamicRefTable.lookupResourceId(&resID);
7013 }
7014 resource_name resName;
7015 if (this->getResourceName(resID, true, &resName)) {
7016 String8 type8;
7017 String8 name8;
7018 if (resName.type8 != NULL) {
7019 type8 = String8(resName.type8, resName.typeLen);
7020 } else {
7021 type8 = String8(resName.type, resName.typeLen);
7022 }
7023 if (resName.name8 != NULL) {
7024 name8 = String8(resName.name8, resName.nameLen);
7025 } else {
7026 name8 = String8(resName.name, resName.nameLen);
7027 }
7028 printf(" resource 0x%08x %s:%s/%s: ", resID,
7029 CHAR16_TO_CSTR(resName.package, resName.packageLen),
7030 type8.string(), name8.string());
7031 } else {
7032 printf(" INVALID RESOURCE 0x%08x: ", resID);
7033 }
7034 if ((thisOffset&0x3) != 0) {
7035 printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
7036 continue;
7037 }
7038 if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
7039 printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
7040 entriesStart, thisOffset, typeSize);
7041 continue;
7042 }
7043
7044 const ResTable_entry* ent = (const ResTable_entry*)
7045 (((const uint8_t*)type) + entriesStart + thisOffset);
7046 if (((entriesStart + thisOffset)&0x3) != 0) {
7047 printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
7048 (entriesStart + thisOffset));
7049 continue;
7050 }
7051
7052 uintptr_t esize = dtohs(ent->size);
7053 if ((esize&0x3) != 0) {
7054 printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
7055 continue;
7056 }
7057 if ((thisOffset+esize) > typeSize) {
7058 printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
7059 entriesStart, thisOffset, (void *)esize, typeSize);
7060 continue;
7061 }
7062
7063 const Res_value* valuePtr = NULL;
7064 const ResTable_map_entry* bagPtr = NULL;
7065 Res_value value;
7066 if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
7067 printf("<bag>");
7068 bagPtr = (const ResTable_map_entry*)ent;
7069 } else {
7070 valuePtr = (const Res_value*)
7071 (((const uint8_t*)ent) + esize);
7072 value.copyFrom_dtoh(*valuePtr);
7073 printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
7074 (int)value.dataType, (int)value.data,
7075 (int)value.size, (int)value.res0);
7076 }
7077
7078 if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
7079 printf(" (PUBLIC)");
7080 }
7081 printf("\n");
7082
7083 if (inclValues) {
7084 if (valuePtr != NULL) {
7085 printf(" ");
7086 print_value(typeConfigs->package, value);
7087 } else if (bagPtr != NULL) {
7088 const int N = dtohl(bagPtr->count);
7089 const uint8_t* baseMapPtr = (const uint8_t*)ent;
7090 size_t mapOffset = esize;
7091 const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
7092 const uint32_t parent = dtohl(bagPtr->parent.ident);
7093 uint32_t resolvedParent = parent;
7094 if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
7095 status_t err = pg->dynamicRefTable.lookupResourceId(&resolvedParent);
7096 if (err != NO_ERROR) {
7097 resolvedParent = 0;
7098 }
7099 }
7100 printf(" Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
7101 parent, resolvedParent, N);
7102 for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
7103 printf(" #%i (Key=0x%08x): ",
7104 i, dtohl(mapPtr->name.ident));
7105 value.copyFrom_dtoh(mapPtr->value);
7106 print_value(typeConfigs->package, value);
7107 const size_t size = dtohs(mapPtr->value.size);
7108 mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
7109 mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
7110 }
7111 }
7112 }
7113 }
7114 }
7115 }
7116 }
7117 }
7118
7119 } // namespace android
7120