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 <androidfw/ByteBucketArray.h>
21 #include <androidfw/ResourceTypes.h>
22 #include <androidfw/TypeWrappers.h>
23 #include <utils/Atomic.h>
24 #include <utils/ByteOrder.h>
25 #include <utils/Debug.h>
26 #include <utils/Log.h>
27 #include <utils/String16.h>
28 #include <utils/String8.h>
29
30 #include <stdlib.h>
31 #include <string.h>
32 #include <memory.h>
33 #include <ctype.h>
34 #include <stdint.h>
35 #include <stddef.h>
36
37 #ifndef INT32_MAX
38 #define INT32_MAX ((int32_t)(2147483647))
39 #endif
40
41 #define STRING_POOL_NOISY(x) //x
42 #define XML_NOISY(x) //x
43 #define TABLE_NOISY(x) //x
44 #define TABLE_GETENTRY(x) //x
45 #define TABLE_SUPER_NOISY(x) //x
46 #define LOAD_TABLE_NOISY(x) //x
47 #define TABLE_THEME(x) //x
48 #define LIB_NOISY(x) //x
49
50 namespace android {
51
52 #ifdef HAVE_WINSOCK
53 #undef nhtol
54 #undef htonl
55
56 #ifdef HAVE_LITTLE_ENDIAN
57 #define ntohl(x) ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
58 #define htonl(x) ntohl(x)
59 #define ntohs(x) ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
60 #define htons(x) ntohs(x)
61 #else
62 #define ntohl(x) (x)
63 #define htonl(x) (x)
64 #define ntohs(x) (x)
65 #define htons(x) (x)
66 #endif
67 #endif
68
69 #define IDMAP_MAGIC 0x504D4449
70 #define IDMAP_CURRENT_VERSION 0x00000001
71
72 #define APP_PACKAGE_ID 0x7f
73 #define SYS_PACKAGE_ID 0x01
74
75 // Standard C isspace() is only required to look at the low byte of its input, so
76 // produces incorrect results for UTF-16 characters. For safety's sake, assume that
77 // any high-byte UTF-16 code point is not whitespace.
isspace16(char16_t c)78 inline int isspace16(char16_t c) {
79 return (c < 0x0080 && isspace(c));
80 }
81
82 template<typename T>
max(T a,T b)83 inline static T max(T a, T b) {
84 return a > b ? a : b;
85 }
86
87 // range checked; guaranteed to NUL-terminate within the stated number of available slots
88 // NOTE: if this truncates the dst string due to running out of space, no attempt is
89 // made to avoid splitting surrogate pairs.
strcpy16_dtoh(uint16_t * dst,const uint16_t * src,size_t avail)90 static void strcpy16_dtoh(uint16_t* dst, const uint16_t* src, size_t avail)
91 {
92 uint16_t* last = dst + avail - 1;
93 while (*src && (dst < last)) {
94 char16_t s = dtohs(*src);
95 *dst++ = s;
96 src++;
97 }
98 *dst = 0;
99 }
100
validate_chunk(const ResChunk_header * chunk,size_t minSize,const uint8_t * dataEnd,const char * name)101 static status_t validate_chunk(const ResChunk_header* chunk,
102 size_t minSize,
103 const uint8_t* dataEnd,
104 const char* name)
105 {
106 const uint16_t headerSize = dtohs(chunk->headerSize);
107 const uint32_t size = dtohl(chunk->size);
108
109 if (headerSize >= minSize) {
110 if (headerSize <= size) {
111 if (((headerSize|size)&0x3) == 0) {
112 if ((size_t)size <= (size_t)(dataEnd-((const uint8_t*)chunk))) {
113 return NO_ERROR;
114 }
115 ALOGW("%s data size 0x%x extends beyond resource end %p.",
116 name, size, (void*)(dataEnd-((const uint8_t*)chunk)));
117 return BAD_TYPE;
118 }
119 ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
120 name, (int)size, (int)headerSize);
121 return BAD_TYPE;
122 }
123 ALOGW("%s size 0x%x is smaller than header size 0x%x.",
124 name, size, headerSize);
125 return BAD_TYPE;
126 }
127 ALOGW("%s header size 0x%04x is too small.",
128 name, headerSize);
129 return BAD_TYPE;
130 }
131
fill9patchOffsets(Res_png_9patch * patch)132 static void fill9patchOffsets(Res_png_9patch* patch) {
133 patch->xDivsOffset = sizeof(Res_png_9patch);
134 patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
135 patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
136 }
137
copyFrom_dtoh(const Res_value & src)138 inline void Res_value::copyFrom_dtoh(const Res_value& src)
139 {
140 size = dtohs(src.size);
141 res0 = src.res0;
142 dataType = src.dataType;
143 data = dtohl(src.data);
144 }
145
deviceToFile()146 void Res_png_9patch::deviceToFile()
147 {
148 int32_t* xDivs = getXDivs();
149 for (int i = 0; i < numXDivs; i++) {
150 xDivs[i] = htonl(xDivs[i]);
151 }
152 int32_t* yDivs = getYDivs();
153 for (int i = 0; i < numYDivs; i++) {
154 yDivs[i] = htonl(yDivs[i]);
155 }
156 paddingLeft = htonl(paddingLeft);
157 paddingRight = htonl(paddingRight);
158 paddingTop = htonl(paddingTop);
159 paddingBottom = htonl(paddingBottom);
160 uint32_t* colors = getColors();
161 for (int i=0; i<numColors; i++) {
162 colors[i] = htonl(colors[i]);
163 }
164 }
165
fileToDevice()166 void Res_png_9patch::fileToDevice()
167 {
168 int32_t* xDivs = getXDivs();
169 for (int i = 0; i < numXDivs; i++) {
170 xDivs[i] = ntohl(xDivs[i]);
171 }
172 int32_t* yDivs = getYDivs();
173 for (int i = 0; i < numYDivs; i++) {
174 yDivs[i] = ntohl(yDivs[i]);
175 }
176 paddingLeft = ntohl(paddingLeft);
177 paddingRight = ntohl(paddingRight);
178 paddingTop = ntohl(paddingTop);
179 paddingBottom = ntohl(paddingBottom);
180 uint32_t* colors = getColors();
181 for (int i=0; i<numColors; i++) {
182 colors[i] = ntohl(colors[i]);
183 }
184 }
185
serializedSize() const186 size_t Res_png_9patch::serializedSize() const
187 {
188 // The size of this struct is 32 bytes on the 32-bit target system
189 // 4 * int8_t
190 // 4 * int32_t
191 // 3 * uint32_t
192 return 32
193 + numXDivs * sizeof(int32_t)
194 + numYDivs * sizeof(int32_t)
195 + numColors * sizeof(uint32_t);
196 }
197
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors)198 void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
199 const int32_t* yDivs, const uint32_t* colors)
200 {
201 // Use calloc since we're going to leave a few holes in the data
202 // and want this to run cleanly under valgrind
203 void* newData = calloc(1, patch.serializedSize());
204 serialize(patch, xDivs, yDivs, colors, newData);
205 return newData;
206 }
207
serialize(const Res_png_9patch & patch,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors,void * outData)208 void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
209 const int32_t* yDivs, const uint32_t* colors, void* outData)
210 {
211 uint8_t* data = (uint8_t*) outData;
212 memcpy(data, &patch.wasDeserialized, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
213 memcpy(data + 12, &patch.paddingLeft, 16); // copy paddingXXXX
214 data += 32;
215
216 memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
217 data += patch.numXDivs * sizeof(int32_t);
218 memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
219 data += patch.numYDivs * sizeof(int32_t);
220 memcpy(data, colors, patch.numColors * sizeof(uint32_t));
221
222 fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
223 }
224
assertIdmapHeader(const void * idmap,size_t size)225 static bool assertIdmapHeader(const void* idmap, size_t size) {
226 if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
227 ALOGE("idmap: header is not word aligned");
228 return false;
229 }
230
231 if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
232 ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
233 return false;
234 }
235
236 const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
237 if (magic != IDMAP_MAGIC) {
238 ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
239 magic, IDMAP_MAGIC);
240 return false;
241 }
242
243 const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
244 if (version != IDMAP_CURRENT_VERSION) {
245 // We are strict about versions because files with this format are
246 // auto-generated and don't need backwards compatibility.
247 ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
248 version, IDMAP_CURRENT_VERSION);
249 return false;
250 }
251 return true;
252 }
253
254 class IdmapEntries {
255 public:
IdmapEntries()256 IdmapEntries() : mData(NULL) {}
257
hasEntries() const258 bool hasEntries() const {
259 if (mData == NULL) {
260 return false;
261 }
262
263 return (dtohs(*mData) > 0);
264 }
265
byteSize() const266 size_t byteSize() const {
267 if (mData == NULL) {
268 return 0;
269 }
270 uint16_t entryCount = dtohs(mData[2]);
271 return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
272 }
273
targetTypeId() const274 uint8_t targetTypeId() const {
275 if (mData == NULL) {
276 return 0;
277 }
278 return dtohs(mData[0]);
279 }
280
overlayTypeId() const281 uint8_t overlayTypeId() const {
282 if (mData == NULL) {
283 return 0;
284 }
285 return dtohs(mData[1]);
286 }
287
setTo(const void * entryHeader,size_t size)288 status_t setTo(const void* entryHeader, size_t size) {
289 if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
290 ALOGE("idmap: entry header is not word aligned");
291 return UNKNOWN_ERROR;
292 }
293
294 if (size < sizeof(uint16_t) * 4) {
295 ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
296 return UNKNOWN_ERROR;
297 }
298
299 const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
300 const uint16_t targetTypeId = dtohs(header[0]);
301 const uint16_t overlayTypeId = dtohs(header[1]);
302 if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
303 ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
304 return UNKNOWN_ERROR;
305 }
306
307 uint16_t entryCount = dtohs(header[2]);
308 if (size < sizeof(uint32_t) * (entryCount + 2)) {
309 ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
310 (uint32_t) size, (uint32_t) entryCount);
311 return UNKNOWN_ERROR;
312 }
313 mData = header;
314 return NO_ERROR;
315 }
316
lookup(uint16_t entryId,uint16_t * outEntryId) const317 status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
318 uint16_t entryCount = dtohs(mData[2]);
319 uint16_t offset = dtohs(mData[3]);
320
321 if (entryId < offset) {
322 // The entry is not present in this idmap
323 return BAD_INDEX;
324 }
325
326 entryId -= offset;
327
328 if (entryId >= entryCount) {
329 // The entry is not present in this idmap
330 return BAD_INDEX;
331 }
332
333 // It is safe to access the type here without checking the size because
334 // we have checked this when it was first loaded.
335 const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
336 uint32_t mappedEntry = dtohl(entries[entryId]);
337 if (mappedEntry == 0xffffffff) {
338 // This entry is not present in this idmap
339 return BAD_INDEX;
340 }
341 *outEntryId = static_cast<uint16_t>(mappedEntry);
342 return NO_ERROR;
343 }
344
345 private:
346 const uint16_t* mData;
347 };
348
parseIdmap(const void * idmap,size_t size,uint8_t * outPackageId,KeyedVector<uint8_t,IdmapEntries> * outMap)349 status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
350 if (!assertIdmapHeader(idmap, size)) {
351 return UNKNOWN_ERROR;
352 }
353
354 size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
355 if (size < sizeof(uint16_t) * 2) {
356 ALOGE("idmap: too small to contain any mapping");
357 return UNKNOWN_ERROR;
358 }
359
360 const uint16_t* data = reinterpret_cast<const uint16_t*>(
361 reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
362
363 uint16_t targetPackageId = dtohs(*(data++));
364 if (targetPackageId == 0 || targetPackageId > 255) {
365 ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
366 return UNKNOWN_ERROR;
367 }
368
369 uint16_t mapCount = dtohs(*(data++));
370 if (mapCount == 0) {
371 ALOGE("idmap: no mappings");
372 return UNKNOWN_ERROR;
373 }
374
375 if (mapCount > 255) {
376 ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
377 }
378
379 while (size > sizeof(uint16_t) * 4) {
380 IdmapEntries entries;
381 status_t err = entries.setTo(data, size);
382 if (err != NO_ERROR) {
383 return err;
384 }
385
386 ssize_t index = outMap->add(entries.overlayTypeId(), entries);
387 if (index < 0) {
388 return NO_MEMORY;
389 }
390
391 data += entries.byteSize() / sizeof(uint16_t);
392 size -= entries.byteSize();
393 }
394
395 if (outPackageId != NULL) {
396 *outPackageId = static_cast<uint8_t>(targetPackageId);
397 }
398 return NO_ERROR;
399 }
400
deserialize(void * inData)401 Res_png_9patch* Res_png_9patch::deserialize(void* inData)
402 {
403
404 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
405 patch->wasDeserialized = true;
406 fill9patchOffsets(patch);
407
408 return patch;
409 }
410
411 // --------------------------------------------------------------------
412 // --------------------------------------------------------------------
413 // --------------------------------------------------------------------
414
ResStringPool()415 ResStringPool::ResStringPool()
416 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
417 {
418 }
419
ResStringPool(const void * data,size_t size,bool copyData)420 ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
421 : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
422 {
423 setTo(data, size, copyData);
424 }
425
~ResStringPool()426 ResStringPool::~ResStringPool()
427 {
428 uninit();
429 }
430
setToEmpty()431 void ResStringPool::setToEmpty()
432 {
433 uninit();
434
435 mOwnedData = calloc(1, sizeof(ResStringPool_header));
436 ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
437 mSize = 0;
438 mEntries = NULL;
439 mStrings = NULL;
440 mStringPoolSize = 0;
441 mEntryStyles = NULL;
442 mStyles = NULL;
443 mStylePoolSize = 0;
444 mHeader = (const ResStringPool_header*) header;
445 }
446
setTo(const void * data,size_t size,bool copyData)447 status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
448 {
449 if (!data || !size) {
450 return (mError=BAD_TYPE);
451 }
452
453 uninit();
454
455 const bool notDeviceEndian = htods(0xf0) != 0xf0;
456
457 if (copyData || notDeviceEndian) {
458 mOwnedData = malloc(size);
459 if (mOwnedData == NULL) {
460 return (mError=NO_MEMORY);
461 }
462 memcpy(mOwnedData, data, size);
463 data = mOwnedData;
464 }
465
466 mHeader = (const ResStringPool_header*)data;
467
468 if (notDeviceEndian) {
469 ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
470 h->header.headerSize = dtohs(mHeader->header.headerSize);
471 h->header.type = dtohs(mHeader->header.type);
472 h->header.size = dtohl(mHeader->header.size);
473 h->stringCount = dtohl(mHeader->stringCount);
474 h->styleCount = dtohl(mHeader->styleCount);
475 h->flags = dtohl(mHeader->flags);
476 h->stringsStart = dtohl(mHeader->stringsStart);
477 h->stylesStart = dtohl(mHeader->stylesStart);
478 }
479
480 if (mHeader->header.headerSize > mHeader->header.size
481 || mHeader->header.size > size) {
482 ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
483 (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
484 return (mError=BAD_TYPE);
485 }
486 mSize = mHeader->header.size;
487 mEntries = (const uint32_t*)
488 (((const uint8_t*)data)+mHeader->header.headerSize);
489
490 if (mHeader->stringCount > 0) {
491 if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount) // uint32 overflow?
492 || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
493 > size) {
494 ALOGW("Bad string block: entry of %d items extends past data size %d\n",
495 (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
496 (int)size);
497 return (mError=BAD_TYPE);
498 }
499
500 size_t charSize;
501 if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
502 charSize = sizeof(uint8_t);
503 } else {
504 charSize = sizeof(char16_t);
505 }
506
507 // There should be at least space for the smallest string
508 // (2 bytes length, null terminator).
509 if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
510 ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
511 (int)mHeader->stringsStart, (int)mHeader->header.size);
512 return (mError=BAD_TYPE);
513 }
514
515 mStrings = (const void*)
516 (((const uint8_t*)data) + mHeader->stringsStart);
517
518 if (mHeader->styleCount == 0) {
519 mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
520 } else {
521 // check invariant: styles starts before end of data
522 if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
523 ALOGW("Bad style block: style block starts at %d past data size of %d\n",
524 (int)mHeader->stylesStart, (int)mHeader->header.size);
525 return (mError=BAD_TYPE);
526 }
527 // check invariant: styles follow the strings
528 if (mHeader->stylesStart <= mHeader->stringsStart) {
529 ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
530 (int)mHeader->stylesStart, (int)mHeader->stringsStart);
531 return (mError=BAD_TYPE);
532 }
533 mStringPoolSize =
534 (mHeader->stylesStart-mHeader->stringsStart)/charSize;
535 }
536
537 // check invariant: stringCount > 0 requires a string pool to exist
538 if (mStringPoolSize == 0) {
539 ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
540 return (mError=BAD_TYPE);
541 }
542
543 if (notDeviceEndian) {
544 size_t i;
545 uint32_t* e = const_cast<uint32_t*>(mEntries);
546 for (i=0; i<mHeader->stringCount; i++) {
547 e[i] = dtohl(mEntries[i]);
548 }
549 if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
550 const char16_t* strings = (const char16_t*)mStrings;
551 char16_t* s = const_cast<char16_t*>(strings);
552 for (i=0; i<mStringPoolSize; i++) {
553 s[i] = dtohs(strings[i]);
554 }
555 }
556 }
557
558 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
559 ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
560 (!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
561 ((char16_t*)mStrings)[mStringPoolSize-1] != 0)) {
562 ALOGW("Bad string block: last string is not 0-terminated\n");
563 return (mError=BAD_TYPE);
564 }
565 } else {
566 mStrings = NULL;
567 mStringPoolSize = 0;
568 }
569
570 if (mHeader->styleCount > 0) {
571 mEntryStyles = mEntries + mHeader->stringCount;
572 // invariant: integer overflow in calculating mEntryStyles
573 if (mEntryStyles < mEntries) {
574 ALOGW("Bad string block: integer overflow finding styles\n");
575 return (mError=BAD_TYPE);
576 }
577
578 if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
579 ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
580 (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
581 (int)size);
582 return (mError=BAD_TYPE);
583 }
584 mStyles = (const uint32_t*)
585 (((const uint8_t*)data)+mHeader->stylesStart);
586 if (mHeader->stylesStart >= mHeader->header.size) {
587 ALOGW("Bad string block: style pool starts %d, after total size %d\n",
588 (int)mHeader->stylesStart, (int)mHeader->header.size);
589 return (mError=BAD_TYPE);
590 }
591 mStylePoolSize =
592 (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
593
594 if (notDeviceEndian) {
595 size_t i;
596 uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
597 for (i=0; i<mHeader->styleCount; i++) {
598 e[i] = dtohl(mEntryStyles[i]);
599 }
600 uint32_t* s = const_cast<uint32_t*>(mStyles);
601 for (i=0; i<mStylePoolSize; i++) {
602 s[i] = dtohl(mStyles[i]);
603 }
604 }
605
606 const ResStringPool_span endSpan = {
607 { htodl(ResStringPool_span::END) },
608 htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
609 };
610 if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
611 &endSpan, sizeof(endSpan)) != 0) {
612 ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
613 return (mError=BAD_TYPE);
614 }
615 } else {
616 mEntryStyles = NULL;
617 mStyles = NULL;
618 mStylePoolSize = 0;
619 }
620
621 return (mError=NO_ERROR);
622 }
623
getError() const624 status_t ResStringPool::getError() const
625 {
626 return mError;
627 }
628
uninit()629 void ResStringPool::uninit()
630 {
631 mError = NO_INIT;
632 if (mHeader != NULL && mCache != NULL) {
633 for (size_t x = 0; x < mHeader->stringCount; x++) {
634 if (mCache[x] != NULL) {
635 free(mCache[x]);
636 mCache[x] = NULL;
637 }
638 }
639 free(mCache);
640 mCache = NULL;
641 }
642 if (mOwnedData) {
643 free(mOwnedData);
644 mOwnedData = NULL;
645 }
646 }
647
648 /**
649 * Strings in UTF-16 format have length indicated by a length encoded in the
650 * stored data. It is either 1 or 2 characters of length data. This allows a
651 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
652 * much data in a string, you're abusing them.
653 *
654 * If the high bit is set, then there are two characters or 4 bytes of length
655 * data encoded. In that case, drop the high bit of the first character and
656 * add it together with the next character.
657 */
658 static inline size_t
decodeLength(const char16_t ** str)659 decodeLength(const char16_t** str)
660 {
661 size_t len = **str;
662 if ((len & 0x8000) != 0) {
663 (*str)++;
664 len = ((len & 0x7FFF) << 16) | **str;
665 }
666 (*str)++;
667 return len;
668 }
669
670 /**
671 * Strings in UTF-8 format have length indicated by a length encoded in the
672 * stored data. It is either 1 or 2 characters of length data. This allows a
673 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
674 * text in another way if you're using that much data in a single string.
675 *
676 * If the high bit is set, then there are two characters or 2 bytes of length
677 * data encoded. In that case, drop the high bit of the first character and
678 * add it together with the next character.
679 */
680 static inline size_t
decodeLength(const uint8_t ** str)681 decodeLength(const uint8_t** str)
682 {
683 size_t len = **str;
684 if ((len & 0x80) != 0) {
685 (*str)++;
686 len = ((len & 0x7F) << 8) | **str;
687 }
688 (*str)++;
689 return len;
690 }
691
stringAt(size_t idx,size_t * u16len) const692 const uint16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
693 {
694 if (mError == NO_ERROR && idx < mHeader->stringCount) {
695 const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
696 const uint32_t off = mEntries[idx]/(isUTF8?sizeof(char):sizeof(char16_t));
697 if (off < (mStringPoolSize-1)) {
698 if (!isUTF8) {
699 const char16_t* strings = (char16_t*)mStrings;
700 const char16_t* str = strings+off;
701
702 *u16len = decodeLength(&str);
703 if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
704 return str;
705 } else {
706 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
707 (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
708 }
709 } else {
710 const uint8_t* strings = (uint8_t*)mStrings;
711 const uint8_t* u8str = strings+off;
712
713 *u16len = decodeLength(&u8str);
714 size_t u8len = decodeLength(&u8str);
715
716 // encLen must be less than 0x7FFF due to encoding.
717 if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
718 AutoMutex lock(mDecodeLock);
719
720 if (mCache == NULL) {
721 #ifndef HAVE_ANDROID_OS
722 STRING_POOL_NOISY(ALOGI("CREATING STRING CACHE OF %d bytes",
723 mHeader->stringCount*sizeof(char16_t**)));
724 #else
725 // We do not want to be in this case when actually running Android.
726 ALOGW("CREATING STRING CACHE OF %d bytes",
727 mHeader->stringCount*sizeof(char16_t**));
728 #endif
729 mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
730 if (mCache == NULL) {
731 ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
732 (int)(mHeader->stringCount*sizeof(char16_t**)));
733 return NULL;
734 }
735 }
736
737 if (mCache[idx] != NULL) {
738 return mCache[idx];
739 }
740
741 ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
742 if (actualLen < 0 || (size_t)actualLen != *u16len) {
743 ALOGW("Bad string block: string #%lld decoded length is not correct "
744 "%lld vs %llu\n",
745 (long long)idx, (long long)actualLen, (long long)*u16len);
746 return NULL;
747 }
748
749 char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
750 if (!u16str) {
751 ALOGW("No memory when trying to allocate decode cache for string #%d\n",
752 (int)idx);
753 return NULL;
754 }
755
756 STRING_POOL_NOISY(ALOGI("Caching UTF8 string: %s", u8str));
757 utf8_to_utf16(u8str, u8len, u16str);
758 mCache[idx] = u16str;
759 return u16str;
760 } else {
761 ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
762 (long long)idx, (long long)(u8str+u8len-strings),
763 (long long)mStringPoolSize);
764 }
765 }
766 } else {
767 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
768 (int)idx, (int)(off*sizeof(uint16_t)),
769 (int)(mStringPoolSize*sizeof(uint16_t)));
770 }
771 }
772 return NULL;
773 }
774
string8At(size_t idx,size_t * outLen) const775 const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
776 {
777 if (mError == NO_ERROR && idx < mHeader->stringCount) {
778 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
779 return NULL;
780 }
781 const uint32_t off = mEntries[idx]/sizeof(char);
782 if (off < (mStringPoolSize-1)) {
783 const uint8_t* strings = (uint8_t*)mStrings;
784 const uint8_t* str = strings+off;
785 *outLen = decodeLength(&str);
786 size_t encLen = decodeLength(&str);
787 if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
788 return (const char*)str;
789 } else {
790 ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
791 (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
792 }
793 } else {
794 ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
795 (int)idx, (int)(off*sizeof(uint16_t)),
796 (int)(mStringPoolSize*sizeof(uint16_t)));
797 }
798 }
799 return NULL;
800 }
801
string8ObjectAt(size_t idx) const802 const String8 ResStringPool::string8ObjectAt(size_t idx) const
803 {
804 size_t len;
805 const char *str = string8At(idx, &len);
806 if (str != NULL) {
807 return String8(str, len);
808 }
809
810 const char16_t *str16 = stringAt(idx, &len);
811 if (str16 != NULL) {
812 return String8(str16, len);
813 }
814 return String8();
815 }
816
styleAt(const ResStringPool_ref & ref) const817 const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
818 {
819 return styleAt(ref.index);
820 }
821
styleAt(size_t idx) const822 const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
823 {
824 if (mError == NO_ERROR && idx < mHeader->styleCount) {
825 const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
826 if (off < mStylePoolSize) {
827 return (const ResStringPool_span*)(mStyles+off);
828 } else {
829 ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
830 (int)idx, (int)(off*sizeof(uint32_t)),
831 (int)(mStylePoolSize*sizeof(uint32_t)));
832 }
833 }
834 return NULL;
835 }
836
indexOfString(const char16_t * str,size_t strLen) const837 ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
838 {
839 if (mError != NO_ERROR) {
840 return mError;
841 }
842
843 size_t len;
844
845 if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
846 STRING_POOL_NOISY(ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string()));
847
848 // The string pool contains UTF 8 strings; we don't want to cause
849 // temporary UTF-16 strings to be created as we search.
850 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
851 // Do a binary search for the string... this is a little tricky,
852 // because the strings are sorted with strzcmp16(). So to match
853 // the ordering, we need to convert strings in the pool to UTF-16.
854 // But we don't want to hit the cache, so instead we will have a
855 // local temporary allocation for the conversions.
856 char16_t* convBuffer = (char16_t*)malloc(strLen+4);
857 ssize_t l = 0;
858 ssize_t h = mHeader->stringCount-1;
859
860 ssize_t mid;
861 while (l <= h) {
862 mid = l + (h - l)/2;
863 const uint8_t* s = (const uint8_t*)string8At(mid, &len);
864 int c;
865 if (s != NULL) {
866 char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
867 *end = 0;
868 c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
869 } else {
870 c = -1;
871 }
872 STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
873 (const char*)s, c, (int)l, (int)mid, (int)h));
874 if (c == 0) {
875 STRING_POOL_NOISY(ALOGI("MATCH!"));
876 free(convBuffer);
877 return mid;
878 } else if (c < 0) {
879 l = mid + 1;
880 } else {
881 h = mid - 1;
882 }
883 }
884 free(convBuffer);
885 } else {
886 // It is unusual to get the ID from an unsorted string block...
887 // most often this happens because we want to get IDs for style
888 // span tags; since those always appear at the end of the string
889 // block, start searching at the back.
890 String8 str8(str, strLen);
891 const size_t str8Len = str8.size();
892 for (int i=mHeader->stringCount-1; i>=0; i--) {
893 const char* s = string8At(i, &len);
894 STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
895 String8(s).string(),
896 i));
897 if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
898 STRING_POOL_NOISY(ALOGI("MATCH!"));
899 return i;
900 }
901 }
902 }
903
904 } else {
905 STRING_POOL_NOISY(ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string()));
906
907 if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
908 // Do a binary search for the string...
909 ssize_t l = 0;
910 ssize_t h = mHeader->stringCount-1;
911
912 ssize_t mid;
913 while (l <= h) {
914 mid = l + (h - l)/2;
915 const char16_t* s = stringAt(mid, &len);
916 int c = s ? strzcmp16(s, len, str, strLen) : -1;
917 STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
918 String8(s).string(),
919 c, (int)l, (int)mid, (int)h));
920 if (c == 0) {
921 STRING_POOL_NOISY(ALOGI("MATCH!"));
922 return mid;
923 } else if (c < 0) {
924 l = mid + 1;
925 } else {
926 h = mid - 1;
927 }
928 }
929 } else {
930 // It is unusual to get the ID from an unsorted string block...
931 // most often this happens because we want to get IDs for style
932 // span tags; since those always appear at the end of the string
933 // block, start searching at the back.
934 for (int i=mHeader->stringCount-1; i>=0; i--) {
935 const char16_t* s = stringAt(i, &len);
936 STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
937 String8(s).string(),
938 i));
939 if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
940 STRING_POOL_NOISY(ALOGI("MATCH!"));
941 return i;
942 }
943 }
944 }
945 }
946
947 return NAME_NOT_FOUND;
948 }
949
size() const950 size_t ResStringPool::size() const
951 {
952 return (mError == NO_ERROR) ? mHeader->stringCount : 0;
953 }
954
styleCount() const955 size_t ResStringPool::styleCount() const
956 {
957 return (mError == NO_ERROR) ? mHeader->styleCount : 0;
958 }
959
bytes() const960 size_t ResStringPool::bytes() const
961 {
962 return (mError == NO_ERROR) ? mHeader->header.size : 0;
963 }
964
isSorted() const965 bool ResStringPool::isSorted() const
966 {
967 return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
968 }
969
isUTF8() const970 bool ResStringPool::isUTF8() const
971 {
972 return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
973 }
974
975 // --------------------------------------------------------------------
976 // --------------------------------------------------------------------
977 // --------------------------------------------------------------------
978
ResXMLParser(const ResXMLTree & tree)979 ResXMLParser::ResXMLParser(const ResXMLTree& tree)
980 : mTree(tree), mEventCode(BAD_DOCUMENT)
981 {
982 }
983
restart()984 void ResXMLParser::restart()
985 {
986 mCurNode = NULL;
987 mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
988 }
getStrings() const989 const ResStringPool& ResXMLParser::getStrings() const
990 {
991 return mTree.mStrings;
992 }
993
getEventType() const994 ResXMLParser::event_code_t ResXMLParser::getEventType() const
995 {
996 return mEventCode;
997 }
998
next()999 ResXMLParser::event_code_t ResXMLParser::next()
1000 {
1001 if (mEventCode == START_DOCUMENT) {
1002 mCurNode = mTree.mRootNode;
1003 mCurExt = mTree.mRootExt;
1004 return (mEventCode=mTree.mRootCode);
1005 } else if (mEventCode >= FIRST_CHUNK_CODE) {
1006 return nextNode();
1007 }
1008 return mEventCode;
1009 }
1010
getCommentID() const1011 int32_t ResXMLParser::getCommentID() const
1012 {
1013 return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1014 }
1015
getComment(size_t * outLen) const1016 const uint16_t* ResXMLParser::getComment(size_t* outLen) const
1017 {
1018 int32_t id = getCommentID();
1019 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1020 }
1021
getLineNumber() const1022 uint32_t ResXMLParser::getLineNumber() const
1023 {
1024 return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1025 }
1026
getTextID() const1027 int32_t ResXMLParser::getTextID() const
1028 {
1029 if (mEventCode == TEXT) {
1030 return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1031 }
1032 return -1;
1033 }
1034
getText(size_t * outLen) const1035 const uint16_t* ResXMLParser::getText(size_t* outLen) const
1036 {
1037 int32_t id = getTextID();
1038 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1039 }
1040
getTextValue(Res_value * outValue) const1041 ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1042 {
1043 if (mEventCode == TEXT) {
1044 outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1045 return sizeof(Res_value);
1046 }
1047 return BAD_TYPE;
1048 }
1049
getNamespacePrefixID() const1050 int32_t ResXMLParser::getNamespacePrefixID() const
1051 {
1052 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1053 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1054 }
1055 return -1;
1056 }
1057
getNamespacePrefix(size_t * outLen) const1058 const uint16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1059 {
1060 int32_t id = getNamespacePrefixID();
1061 //printf("prefix=%d event=%p\n", id, mEventCode);
1062 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1063 }
1064
getNamespaceUriID() const1065 int32_t ResXMLParser::getNamespaceUriID() const
1066 {
1067 if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1068 return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1069 }
1070 return -1;
1071 }
1072
getNamespaceUri(size_t * outLen) const1073 const uint16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1074 {
1075 int32_t id = getNamespaceUriID();
1076 //printf("uri=%d event=%p\n", id, mEventCode);
1077 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1078 }
1079
getElementNamespaceID() const1080 int32_t ResXMLParser::getElementNamespaceID() const
1081 {
1082 if (mEventCode == START_TAG) {
1083 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1084 }
1085 if (mEventCode == END_TAG) {
1086 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1087 }
1088 return -1;
1089 }
1090
getElementNamespace(size_t * outLen) const1091 const uint16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1092 {
1093 int32_t id = getElementNamespaceID();
1094 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1095 }
1096
getElementNameID() const1097 int32_t ResXMLParser::getElementNameID() const
1098 {
1099 if (mEventCode == START_TAG) {
1100 return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1101 }
1102 if (mEventCode == END_TAG) {
1103 return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1104 }
1105 return -1;
1106 }
1107
getElementName(size_t * outLen) const1108 const uint16_t* ResXMLParser::getElementName(size_t* outLen) const
1109 {
1110 int32_t id = getElementNameID();
1111 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1112 }
1113
getAttributeCount() const1114 size_t ResXMLParser::getAttributeCount() const
1115 {
1116 if (mEventCode == START_TAG) {
1117 return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1118 }
1119 return 0;
1120 }
1121
getAttributeNamespaceID(size_t idx) const1122 int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1123 {
1124 if (mEventCode == START_TAG) {
1125 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1126 if (idx < dtohs(tag->attributeCount)) {
1127 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1128 (((const uint8_t*)tag)
1129 + dtohs(tag->attributeStart)
1130 + (dtohs(tag->attributeSize)*idx));
1131 return dtohl(attr->ns.index);
1132 }
1133 }
1134 return -2;
1135 }
1136
getAttributeNamespace(size_t idx,size_t * outLen) const1137 const uint16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1138 {
1139 int32_t id = getAttributeNamespaceID(idx);
1140 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1141 //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1142 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1143 }
1144
getAttributeNamespace8(size_t idx,size_t * outLen) const1145 const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1146 {
1147 int32_t id = getAttributeNamespaceID(idx);
1148 //printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
1149 //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1150 return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1151 }
1152
getAttributeNameID(size_t idx) const1153 int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1154 {
1155 if (mEventCode == START_TAG) {
1156 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1157 if (idx < dtohs(tag->attributeCount)) {
1158 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1159 (((const uint8_t*)tag)
1160 + dtohs(tag->attributeStart)
1161 + (dtohs(tag->attributeSize)*idx));
1162 return dtohl(attr->name.index);
1163 }
1164 }
1165 return -1;
1166 }
1167
getAttributeName(size_t idx,size_t * outLen) const1168 const uint16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1169 {
1170 int32_t id = getAttributeNameID(idx);
1171 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1172 //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1173 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1174 }
1175
getAttributeName8(size_t idx,size_t * outLen) const1176 const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1177 {
1178 int32_t id = getAttributeNameID(idx);
1179 //printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
1180 //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1181 return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1182 }
1183
getAttributeNameResID(size_t idx) const1184 uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1185 {
1186 int32_t id = getAttributeNameID(idx);
1187 if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1188 return dtohl(mTree.mResIds[id]);
1189 }
1190 return 0;
1191 }
1192
getAttributeValueStringID(size_t idx) const1193 int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1194 {
1195 if (mEventCode == START_TAG) {
1196 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1197 if (idx < dtohs(tag->attributeCount)) {
1198 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1199 (((const uint8_t*)tag)
1200 + dtohs(tag->attributeStart)
1201 + (dtohs(tag->attributeSize)*idx));
1202 return dtohl(attr->rawValue.index);
1203 }
1204 }
1205 return -1;
1206 }
1207
getAttributeStringValue(size_t idx,size_t * outLen) const1208 const uint16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1209 {
1210 int32_t id = getAttributeValueStringID(idx);
1211 //XML_NOISY(printf("getAttributeValue 0x%x=0x%x\n", idx, id));
1212 return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1213 }
1214
getAttributeDataType(size_t idx) const1215 int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1216 {
1217 if (mEventCode == START_TAG) {
1218 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1219 if (idx < dtohs(tag->attributeCount)) {
1220 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1221 (((const uint8_t*)tag)
1222 + dtohs(tag->attributeStart)
1223 + (dtohs(tag->attributeSize)*idx));
1224 uint8_t type = attr->typedValue.dataType;
1225 if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1226 return type;
1227 }
1228
1229 // This is a dynamic reference. We adjust those references
1230 // to regular references at this level, so lie to the caller.
1231 return Res_value::TYPE_REFERENCE;
1232 }
1233 }
1234 return Res_value::TYPE_NULL;
1235 }
1236
getAttributeData(size_t idx) const1237 int32_t ResXMLParser::getAttributeData(size_t idx) const
1238 {
1239 if (mEventCode == START_TAG) {
1240 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1241 if (idx < dtohs(tag->attributeCount)) {
1242 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1243 (((const uint8_t*)tag)
1244 + dtohs(tag->attributeStart)
1245 + (dtohs(tag->attributeSize)*idx));
1246 if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1247 mTree.mDynamicRefTable == NULL) {
1248 return dtohl(attr->typedValue.data);
1249 }
1250
1251 uint32_t data = dtohl(attr->typedValue.data);
1252 if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1253 return data;
1254 }
1255 }
1256 }
1257 return 0;
1258 }
1259
getAttributeValue(size_t idx,Res_value * outValue) const1260 ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1261 {
1262 if (mEventCode == START_TAG) {
1263 const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1264 if (idx < dtohs(tag->attributeCount)) {
1265 const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1266 (((const uint8_t*)tag)
1267 + dtohs(tag->attributeStart)
1268 + (dtohs(tag->attributeSize)*idx));
1269 outValue->copyFrom_dtoh(attr->typedValue);
1270 if (mTree.mDynamicRefTable != NULL &&
1271 mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1272 return BAD_TYPE;
1273 }
1274 return sizeof(Res_value);
1275 }
1276 }
1277 return BAD_TYPE;
1278 }
1279
indexOfAttribute(const char * ns,const char * attr) const1280 ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1281 {
1282 String16 nsStr(ns != NULL ? ns : "");
1283 String16 attrStr(attr);
1284 return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1285 attrStr.string(), attrStr.size());
1286 }
1287
indexOfAttribute(const char16_t * ns,size_t nsLen,const char16_t * attr,size_t attrLen) const1288 ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1289 const char16_t* attr, size_t attrLen) const
1290 {
1291 if (mEventCode == START_TAG) {
1292 if (attr == NULL) {
1293 return NAME_NOT_FOUND;
1294 }
1295 const size_t N = getAttributeCount();
1296 if (mTree.mStrings.isUTF8()) {
1297 String8 ns8, attr8;
1298 if (ns != NULL) {
1299 ns8 = String8(ns, nsLen);
1300 }
1301 attr8 = String8(attr, attrLen);
1302 STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF8 %s (%d) / %s (%d)", ns8.string(), nsLen,
1303 attr8.string(), attrLen));
1304 for (size_t i=0; i<N; i++) {
1305 size_t curNsLen = 0, curAttrLen = 0;
1306 const char* curNs = getAttributeNamespace8(i, &curNsLen);
1307 const char* curAttr = getAttributeName8(i, &curAttrLen);
1308 STRING_POOL_NOISY(ALOGI(" curNs=%s (%d), curAttr=%s (%d)", curNs, curNsLen,
1309 curAttr, curAttrLen));
1310 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1311 && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1312 if (ns == NULL) {
1313 if (curNs == NULL) {
1314 STRING_POOL_NOISY(ALOGI(" FOUND!"));
1315 return i;
1316 }
1317 } else if (curNs != NULL) {
1318 //printf(" --> ns=%s, curNs=%s\n",
1319 // String8(ns).string(), String8(curNs).string());
1320 if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1321 STRING_POOL_NOISY(ALOGI(" FOUND!"));
1322 return i;
1323 }
1324 }
1325 }
1326 }
1327 } else {
1328 STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF16 %s (%d) / %s (%d)",
1329 String8(ns, nsLen).string(), nsLen,
1330 String8(attr, attrLen).string(), attrLen));
1331 for (size_t i=0; i<N; i++) {
1332 size_t curNsLen = 0, curAttrLen = 0;
1333 const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1334 const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1335 STRING_POOL_NOISY(ALOGI(" curNs=%s (%d), curAttr=%s (%d)",
1336 String8(curNs, curNsLen).string(), curNsLen,
1337 String8(curAttr, curAttrLen).string(), curAttrLen));
1338 if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1339 && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1340 if (ns == NULL) {
1341 if (curNs == NULL) {
1342 STRING_POOL_NOISY(ALOGI(" FOUND!"));
1343 return i;
1344 }
1345 } else if (curNs != NULL) {
1346 //printf(" --> ns=%s, curNs=%s\n",
1347 // String8(ns).string(), String8(curNs).string());
1348 if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1349 STRING_POOL_NOISY(ALOGI(" FOUND!"));
1350 return i;
1351 }
1352 }
1353 }
1354 }
1355 }
1356 }
1357
1358 return NAME_NOT_FOUND;
1359 }
1360
indexOfID() const1361 ssize_t ResXMLParser::indexOfID() const
1362 {
1363 if (mEventCode == START_TAG) {
1364 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1365 if (idx > 0) return (idx-1);
1366 }
1367 return NAME_NOT_FOUND;
1368 }
1369
indexOfClass() const1370 ssize_t ResXMLParser::indexOfClass() const
1371 {
1372 if (mEventCode == START_TAG) {
1373 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1374 if (idx > 0) return (idx-1);
1375 }
1376 return NAME_NOT_FOUND;
1377 }
1378
indexOfStyle() const1379 ssize_t ResXMLParser::indexOfStyle() const
1380 {
1381 if (mEventCode == START_TAG) {
1382 const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1383 if (idx > 0) return (idx-1);
1384 }
1385 return NAME_NOT_FOUND;
1386 }
1387
nextNode()1388 ResXMLParser::event_code_t ResXMLParser::nextNode()
1389 {
1390 if (mEventCode < 0) {
1391 return mEventCode;
1392 }
1393
1394 do {
1395 const ResXMLTree_node* next = (const ResXMLTree_node*)
1396 (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1397 //ALOGW("Next node: prev=%p, next=%p\n", mCurNode, next);
1398
1399 if (((const uint8_t*)next) >= mTree.mDataEnd) {
1400 mCurNode = NULL;
1401 return (mEventCode=END_DOCUMENT);
1402 }
1403
1404 if (mTree.validateNode(next) != NO_ERROR) {
1405 mCurNode = NULL;
1406 return (mEventCode=BAD_DOCUMENT);
1407 }
1408
1409 mCurNode = next;
1410 const uint16_t headerSize = dtohs(next->header.headerSize);
1411 const uint32_t totalSize = dtohl(next->header.size);
1412 mCurExt = ((const uint8_t*)next) + headerSize;
1413 size_t minExtSize = 0;
1414 event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1415 switch ((mEventCode=eventCode)) {
1416 case RES_XML_START_NAMESPACE_TYPE:
1417 case RES_XML_END_NAMESPACE_TYPE:
1418 minExtSize = sizeof(ResXMLTree_namespaceExt);
1419 break;
1420 case RES_XML_START_ELEMENT_TYPE:
1421 minExtSize = sizeof(ResXMLTree_attrExt);
1422 break;
1423 case RES_XML_END_ELEMENT_TYPE:
1424 minExtSize = sizeof(ResXMLTree_endElementExt);
1425 break;
1426 case RES_XML_CDATA_TYPE:
1427 minExtSize = sizeof(ResXMLTree_cdataExt);
1428 break;
1429 default:
1430 ALOGW("Unknown XML block: header type %d in node at %d\n",
1431 (int)dtohs(next->header.type),
1432 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1433 continue;
1434 }
1435
1436 if ((totalSize-headerSize) < minExtSize) {
1437 ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1438 (int)dtohs(next->header.type),
1439 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1440 (int)(totalSize-headerSize), (int)minExtSize);
1441 return (mEventCode=BAD_DOCUMENT);
1442 }
1443
1444 //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1445 // mCurNode, mCurExt, headerSize, minExtSize);
1446
1447 return eventCode;
1448 } while (true);
1449 }
1450
getPosition(ResXMLParser::ResXMLPosition * pos) const1451 void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1452 {
1453 pos->eventCode = mEventCode;
1454 pos->curNode = mCurNode;
1455 pos->curExt = mCurExt;
1456 }
1457
setPosition(const ResXMLParser::ResXMLPosition & pos)1458 void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1459 {
1460 mEventCode = pos.eventCode;
1461 mCurNode = pos.curNode;
1462 mCurExt = pos.curExt;
1463 }
1464
1465 // --------------------------------------------------------------------
1466
1467 static volatile int32_t gCount = 0;
1468
ResXMLTree(const DynamicRefTable * dynamicRefTable)1469 ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1470 : ResXMLParser(*this)
1471 , mDynamicRefTable(dynamicRefTable)
1472 , mError(NO_INIT), mOwnedData(NULL)
1473 {
1474 //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1475 restart();
1476 }
1477
ResXMLTree()1478 ResXMLTree::ResXMLTree()
1479 : ResXMLParser(*this)
1480 , mDynamicRefTable(NULL)
1481 , mError(NO_INIT), mOwnedData(NULL)
1482 {
1483 //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1484 restart();
1485 }
1486
~ResXMLTree()1487 ResXMLTree::~ResXMLTree()
1488 {
1489 //ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1490 uninit();
1491 }
1492
setTo(const void * data,size_t size,bool copyData)1493 status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1494 {
1495 uninit();
1496 mEventCode = START_DOCUMENT;
1497
1498 if (!data || !size) {
1499 return (mError=BAD_TYPE);
1500 }
1501
1502 if (copyData) {
1503 mOwnedData = malloc(size);
1504 if (mOwnedData == NULL) {
1505 return (mError=NO_MEMORY);
1506 }
1507 memcpy(mOwnedData, data, size);
1508 data = mOwnedData;
1509 }
1510
1511 mHeader = (const ResXMLTree_header*)data;
1512 mSize = dtohl(mHeader->header.size);
1513 if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1514 ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1515 (int)dtohs(mHeader->header.headerSize),
1516 (int)dtohl(mHeader->header.size), (int)size);
1517 mError = BAD_TYPE;
1518 restart();
1519 return mError;
1520 }
1521 mDataEnd = ((const uint8_t*)mHeader) + mSize;
1522
1523 mStrings.uninit();
1524 mRootNode = NULL;
1525 mResIds = NULL;
1526 mNumResIds = 0;
1527
1528 // First look for a couple interesting chunks: the string block
1529 // and first XML node.
1530 const ResChunk_header* chunk =
1531 (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1532 const ResChunk_header* lastChunk = chunk;
1533 while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1534 ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1535 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1536 if (err != NO_ERROR) {
1537 mError = err;
1538 goto done;
1539 }
1540 const uint16_t type = dtohs(chunk->type);
1541 const size_t size = dtohl(chunk->size);
1542 XML_NOISY(printf("Scanning @ %p: type=0x%x, size=0x%x\n",
1543 (void*)(((uint32_t)chunk)-((uint32_t)mHeader)), type, size));
1544 if (type == RES_STRING_POOL_TYPE) {
1545 mStrings.setTo(chunk, size);
1546 } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1547 mResIds = (const uint32_t*)
1548 (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1549 mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1550 } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1551 && type <= RES_XML_LAST_CHUNK_TYPE) {
1552 if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1553 mError = BAD_TYPE;
1554 goto done;
1555 }
1556 mCurNode = (const ResXMLTree_node*)lastChunk;
1557 if (nextNode() == BAD_DOCUMENT) {
1558 mError = BAD_TYPE;
1559 goto done;
1560 }
1561 mRootNode = mCurNode;
1562 mRootExt = mCurExt;
1563 mRootCode = mEventCode;
1564 break;
1565 } else {
1566 XML_NOISY(printf("Skipping unknown chunk!\n"));
1567 }
1568 lastChunk = chunk;
1569 chunk = (const ResChunk_header*)
1570 (((const uint8_t*)chunk) + size);
1571 }
1572
1573 if (mRootNode == NULL) {
1574 ALOGW("Bad XML block: no root element node found\n");
1575 mError = BAD_TYPE;
1576 goto done;
1577 }
1578
1579 mError = mStrings.getError();
1580
1581 done:
1582 restart();
1583 return mError;
1584 }
1585
getError() const1586 status_t ResXMLTree::getError() const
1587 {
1588 return mError;
1589 }
1590
uninit()1591 void ResXMLTree::uninit()
1592 {
1593 mError = NO_INIT;
1594 mStrings.uninit();
1595 if (mOwnedData) {
1596 free(mOwnedData);
1597 mOwnedData = NULL;
1598 }
1599 restart();
1600 }
1601
validateNode(const ResXMLTree_node * node) const1602 status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1603 {
1604 const uint16_t eventCode = dtohs(node->header.type);
1605
1606 status_t err = validate_chunk(
1607 &node->header, sizeof(ResXMLTree_node),
1608 mDataEnd, "ResXMLTree_node");
1609
1610 if (err >= NO_ERROR) {
1611 // Only perform additional validation on START nodes
1612 if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1613 return NO_ERROR;
1614 }
1615
1616 const uint16_t headerSize = dtohs(node->header.headerSize);
1617 const uint32_t size = dtohl(node->header.size);
1618 const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1619 (((const uint8_t*)node) + headerSize);
1620 // check for sensical values pulled out of the stream so far...
1621 if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1622 && ((void*)attrExt > (void*)node)) {
1623 const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1624 * dtohs(attrExt->attributeCount);
1625 if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1626 return NO_ERROR;
1627 }
1628 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1629 (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1630 (unsigned int)(size-headerSize));
1631 }
1632 else {
1633 ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1634 (unsigned int)headerSize, (unsigned int)size);
1635 }
1636 return BAD_TYPE;
1637 }
1638
1639 return err;
1640
1641 #if 0
1642 const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1643
1644 const uint16_t headerSize = dtohs(node->header.headerSize);
1645 const uint32_t size = dtohl(node->header.size);
1646
1647 if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1648 if (size >= headerSize) {
1649 if (((const uint8_t*)node) <= (mDataEnd-size)) {
1650 if (!isStart) {
1651 return NO_ERROR;
1652 }
1653 if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1654 <= (size-headerSize)) {
1655 return NO_ERROR;
1656 }
1657 ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1658 ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1659 (int)(size-headerSize));
1660 return BAD_TYPE;
1661 }
1662 ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1663 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1664 return BAD_TYPE;
1665 }
1666 ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1667 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1668 (int)headerSize, (int)size);
1669 return BAD_TYPE;
1670 }
1671 ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1672 (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1673 (int)headerSize);
1674 return BAD_TYPE;
1675 #endif
1676 }
1677
1678 // --------------------------------------------------------------------
1679 // --------------------------------------------------------------------
1680 // --------------------------------------------------------------------
1681
copyFromDeviceNoSwap(const ResTable_config & o)1682 void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1683 const size_t size = dtohl(o.size);
1684 if (size >= sizeof(ResTable_config)) {
1685 *this = o;
1686 } else {
1687 memcpy(this, &o, size);
1688 memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1689 }
1690 }
1691
unpackLanguageOrRegion(const char in[2],const char base,char out[4])1692 /* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1693 char out[4]) {
1694 if (in[0] & 0x80) {
1695 // The high bit is "1", which means this is a packed three letter
1696 // language code.
1697
1698 // The smallest 5 bits of the second char are the first alphabet.
1699 const uint8_t first = in[1] & 0x1f;
1700 // The last three bits of the second char and the first two bits
1701 // of the first char are the second alphabet.
1702 const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1703 // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1704 const uint8_t third = (in[0] & 0x7c) >> 2;
1705
1706 out[0] = first + base;
1707 out[1] = second + base;
1708 out[2] = third + base;
1709 out[3] = 0;
1710
1711 return 3;
1712 }
1713
1714 if (in[0]) {
1715 memcpy(out, in, 2);
1716 memset(out + 2, 0, 2);
1717 return 2;
1718 }
1719
1720 memset(out, 0, 4);
1721 return 0;
1722 }
1723
packLanguageOrRegion(const char * in,const char base,char out[2])1724 /* static */ void packLanguageOrRegion(const char* in, const char base,
1725 char out[2]) {
1726 if (in[2] == 0 || in[2] == '-') {
1727 out[0] = in[0];
1728 out[1] = in[1];
1729 } else {
1730 uint8_t first = (in[0] - base) & 0x007f;
1731 uint8_t second = (in[1] - base) & 0x007f;
1732 uint8_t third = (in[2] - base) & 0x007f;
1733
1734 out[0] = (0x80 | (third << 2) | (second >> 3));
1735 out[1] = ((second << 5) | first);
1736 }
1737 }
1738
1739
packLanguage(const char * language)1740 void ResTable_config::packLanguage(const char* language) {
1741 packLanguageOrRegion(language, 'a', this->language);
1742 }
1743
packRegion(const char * region)1744 void ResTable_config::packRegion(const char* region) {
1745 packLanguageOrRegion(region, '0', this->country);
1746 }
1747
unpackLanguage(char language[4]) const1748 size_t ResTable_config::unpackLanguage(char language[4]) const {
1749 return unpackLanguageOrRegion(this->language, 'a', language);
1750 }
1751
unpackRegion(char region[4]) const1752 size_t ResTable_config::unpackRegion(char region[4]) const {
1753 return unpackLanguageOrRegion(this->country, '0', region);
1754 }
1755
1756
copyFromDtoH(const ResTable_config & o)1757 void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1758 copyFromDeviceNoSwap(o);
1759 size = sizeof(ResTable_config);
1760 mcc = dtohs(mcc);
1761 mnc = dtohs(mnc);
1762 density = dtohs(density);
1763 screenWidth = dtohs(screenWidth);
1764 screenHeight = dtohs(screenHeight);
1765 sdkVersion = dtohs(sdkVersion);
1766 minorVersion = dtohs(minorVersion);
1767 smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1768 screenWidthDp = dtohs(screenWidthDp);
1769 screenHeightDp = dtohs(screenHeightDp);
1770 }
1771
swapHtoD()1772 void ResTable_config::swapHtoD() {
1773 size = htodl(size);
1774 mcc = htods(mcc);
1775 mnc = htods(mnc);
1776 density = htods(density);
1777 screenWidth = htods(screenWidth);
1778 screenHeight = htods(screenHeight);
1779 sdkVersion = htods(sdkVersion);
1780 minorVersion = htods(minorVersion);
1781 smallestScreenWidthDp = htods(smallestScreenWidthDp);
1782 screenWidthDp = htods(screenWidthDp);
1783 screenHeightDp = htods(screenHeightDp);
1784 }
1785
compareLocales(const ResTable_config & l,const ResTable_config & r)1786 /* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1787 if (l.locale != r.locale) {
1788 // NOTE: This is the old behaviour with respect to comparison orders.
1789 // The diff value here doesn't make much sense (given our bit packing scheme)
1790 // but it's stable, and that's all we need.
1791 return l.locale - r.locale;
1792 }
1793
1794 // The language & region are equal, so compare the scripts and variants.
1795 int script = memcmp(l.localeScript, r.localeScript, sizeof(l.localeScript));
1796 if (script) {
1797 return script;
1798 }
1799
1800 // The language, region and script are equal, so compare variants.
1801 //
1802 // This should happen very infrequently (if at all.)
1803 return memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1804 }
1805
compare(const ResTable_config & o) const1806 int ResTable_config::compare(const ResTable_config& o) const {
1807 int32_t diff = (int32_t)(imsi - o.imsi);
1808 if (diff != 0) return diff;
1809 diff = compareLocales(*this, o);
1810 if (diff != 0) return diff;
1811 diff = (int32_t)(screenType - o.screenType);
1812 if (diff != 0) return diff;
1813 diff = (int32_t)(input - o.input);
1814 if (diff != 0) return diff;
1815 diff = (int32_t)(screenSize - o.screenSize);
1816 if (diff != 0) return diff;
1817 diff = (int32_t)(version - o.version);
1818 if (diff != 0) return diff;
1819 diff = (int32_t)(screenLayout - o.screenLayout);
1820 if (diff != 0) return diff;
1821 diff = (int32_t)(uiMode - o.uiMode);
1822 if (diff != 0) return diff;
1823 diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1824 if (diff != 0) return diff;
1825 diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1826 return (int)diff;
1827 }
1828
compareLogical(const ResTable_config & o) const1829 int ResTable_config::compareLogical(const ResTable_config& o) const {
1830 if (mcc != o.mcc) {
1831 return mcc < o.mcc ? -1 : 1;
1832 }
1833 if (mnc != o.mnc) {
1834 return mnc < o.mnc ? -1 : 1;
1835 }
1836
1837 int diff = compareLocales(*this, o);
1838 if (diff < 0) {
1839 return -1;
1840 }
1841 if (diff > 0) {
1842 return 1;
1843 }
1844
1845 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1846 return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1847 }
1848 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1849 return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1850 }
1851 if (screenWidthDp != o.screenWidthDp) {
1852 return screenWidthDp < o.screenWidthDp ? -1 : 1;
1853 }
1854 if (screenHeightDp != o.screenHeightDp) {
1855 return screenHeightDp < o.screenHeightDp ? -1 : 1;
1856 }
1857 if (screenWidth != o.screenWidth) {
1858 return screenWidth < o.screenWidth ? -1 : 1;
1859 }
1860 if (screenHeight != o.screenHeight) {
1861 return screenHeight < o.screenHeight ? -1 : 1;
1862 }
1863 if (density != o.density) {
1864 return density < o.density ? -1 : 1;
1865 }
1866 if (orientation != o.orientation) {
1867 return orientation < o.orientation ? -1 : 1;
1868 }
1869 if (touchscreen != o.touchscreen) {
1870 return touchscreen < o.touchscreen ? -1 : 1;
1871 }
1872 if (input != o.input) {
1873 return input < o.input ? -1 : 1;
1874 }
1875 if (screenLayout != o.screenLayout) {
1876 return screenLayout < o.screenLayout ? -1 : 1;
1877 }
1878 if (uiMode != o.uiMode) {
1879 return uiMode < o.uiMode ? -1 : 1;
1880 }
1881 if (version != o.version) {
1882 return version < o.version ? -1 : 1;
1883 }
1884 return 0;
1885 }
1886
diff(const ResTable_config & o) const1887 int ResTable_config::diff(const ResTable_config& o) const {
1888 int diffs = 0;
1889 if (mcc != o.mcc) diffs |= CONFIG_MCC;
1890 if (mnc != o.mnc) diffs |= CONFIG_MNC;
1891 if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1892 if (density != o.density) diffs |= CONFIG_DENSITY;
1893 if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1894 if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1895 diffs |= CONFIG_KEYBOARD_HIDDEN;
1896 if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1897 if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1898 if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1899 if (version != o.version) diffs |= CONFIG_VERSION;
1900 if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
1901 if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
1902 if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1903 if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1904 if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1905
1906 const int diff = compareLocales(*this, o);
1907 if (diff) diffs |= CONFIG_LOCALE;
1908
1909 return diffs;
1910 }
1911
isLocaleMoreSpecificThan(const ResTable_config & o) const1912 int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
1913 if (locale || o.locale) {
1914 if (language[0] != o.language[0]) {
1915 if (!language[0]) return -1;
1916 if (!o.language[0]) return 1;
1917 }
1918
1919 if (country[0] != o.country[0]) {
1920 if (!country[0]) return -1;
1921 if (!o.country[0]) return 1;
1922 }
1923 }
1924
1925 // There isn't a well specified "importance" order between variants and
1926 // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
1927 // specific than "en-US-POSIX".
1928 //
1929 // We therefore arbitrarily decide to give priority to variants over
1930 // scripts since it seems more useful to do so. We will consider
1931 // "en-US-POSIX" to be more specific than "en-Latn-US".
1932
1933 const int score = ((localeScript[0] != 0) ? 1 : 0) +
1934 ((localeVariant[0] != 0) ? 2 : 0);
1935
1936 const int oScore = ((o.localeScript[0] != 0) ? 1 : 0) +
1937 ((o.localeVariant[0] != 0) ? 2 : 0);
1938
1939 return score - oScore;
1940
1941 }
1942
isMoreSpecificThan(const ResTable_config & o) const1943 bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
1944 // The order of the following tests defines the importance of one
1945 // configuration parameter over another. Those tests first are more
1946 // important, trumping any values in those following them.
1947 if (imsi || o.imsi) {
1948 if (mcc != o.mcc) {
1949 if (!mcc) return false;
1950 if (!o.mcc) return true;
1951 }
1952
1953 if (mnc != o.mnc) {
1954 if (!mnc) return false;
1955 if (!o.mnc) return true;
1956 }
1957 }
1958
1959 if (locale || o.locale) {
1960 const int diff = isLocaleMoreSpecificThan(o);
1961 if (diff < 0) {
1962 return false;
1963 }
1964
1965 if (diff > 0) {
1966 return true;
1967 }
1968 }
1969
1970 if (screenLayout || o.screenLayout) {
1971 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
1972 if (!(screenLayout & MASK_LAYOUTDIR)) return false;
1973 if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
1974 }
1975 }
1976
1977 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1978 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1979 if (!smallestScreenWidthDp) return false;
1980 if (!o.smallestScreenWidthDp) return true;
1981 }
1982 }
1983
1984 if (screenSizeDp || o.screenSizeDp) {
1985 if (screenWidthDp != o.screenWidthDp) {
1986 if (!screenWidthDp) return false;
1987 if (!o.screenWidthDp) return true;
1988 }
1989
1990 if (screenHeightDp != o.screenHeightDp) {
1991 if (!screenHeightDp) return false;
1992 if (!o.screenHeightDp) return true;
1993 }
1994 }
1995
1996 if (screenLayout || o.screenLayout) {
1997 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
1998 if (!(screenLayout & MASK_SCREENSIZE)) return false;
1999 if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2000 }
2001 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2002 if (!(screenLayout & MASK_SCREENLONG)) return false;
2003 if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2004 }
2005 }
2006
2007 if (orientation != o.orientation) {
2008 if (!orientation) return false;
2009 if (!o.orientation) return true;
2010 }
2011
2012 if (uiMode || o.uiMode) {
2013 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2014 if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2015 if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2016 }
2017 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2018 if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2019 if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2020 }
2021 }
2022
2023 // density is never 'more specific'
2024 // as the default just equals 160
2025
2026 if (touchscreen != o.touchscreen) {
2027 if (!touchscreen) return false;
2028 if (!o.touchscreen) return true;
2029 }
2030
2031 if (input || o.input) {
2032 if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2033 if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2034 if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2035 }
2036
2037 if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2038 if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2039 if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2040 }
2041
2042 if (keyboard != o.keyboard) {
2043 if (!keyboard) return false;
2044 if (!o.keyboard) return true;
2045 }
2046
2047 if (navigation != o.navigation) {
2048 if (!navigation) return false;
2049 if (!o.navigation) return true;
2050 }
2051 }
2052
2053 if (screenSize || o.screenSize) {
2054 if (screenWidth != o.screenWidth) {
2055 if (!screenWidth) return false;
2056 if (!o.screenWidth) return true;
2057 }
2058
2059 if (screenHeight != o.screenHeight) {
2060 if (!screenHeight) return false;
2061 if (!o.screenHeight) return true;
2062 }
2063 }
2064
2065 if (version || o.version) {
2066 if (sdkVersion != o.sdkVersion) {
2067 if (!sdkVersion) return false;
2068 if (!o.sdkVersion) return true;
2069 }
2070
2071 if (minorVersion != o.minorVersion) {
2072 if (!minorVersion) return false;
2073 if (!o.minorVersion) return true;
2074 }
2075 }
2076 return false;
2077 }
2078
isBetterThan(const ResTable_config & o,const ResTable_config * requested) const2079 bool ResTable_config::isBetterThan(const ResTable_config& o,
2080 const ResTable_config* requested) const {
2081 if (requested) {
2082 if (imsi || o.imsi) {
2083 if ((mcc != o.mcc) && requested->mcc) {
2084 return (mcc);
2085 }
2086
2087 if ((mnc != o.mnc) && requested->mnc) {
2088 return (mnc);
2089 }
2090 }
2091
2092 if (locale || o.locale) {
2093 if ((language[0] != o.language[0]) && requested->language[0]) {
2094 return (language[0]);
2095 }
2096
2097 if ((country[0] != o.country[0]) && requested->country[0]) {
2098 return (country[0]);
2099 }
2100 }
2101
2102 if (localeScript[0] || o.localeScript[0]) {
2103 if (localeScript[0] != o.localeScript[0] && requested->localeScript[0]) {
2104 return localeScript[0];
2105 }
2106 }
2107
2108 if (localeVariant[0] || o.localeVariant[0]) {
2109 if (localeVariant[0] != o.localeVariant[0] && requested->localeVariant[0]) {
2110 return localeVariant[0];
2111 }
2112 }
2113
2114 if (screenLayout || o.screenLayout) {
2115 if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2116 && (requested->screenLayout & MASK_LAYOUTDIR)) {
2117 int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2118 int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2119 return (myLayoutDir > oLayoutDir);
2120 }
2121 }
2122
2123 if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2124 // The configuration closest to the actual size is best.
2125 // We assume that larger configs have already been filtered
2126 // out at this point. That means we just want the largest one.
2127 if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2128 return smallestScreenWidthDp > o.smallestScreenWidthDp;
2129 }
2130 }
2131
2132 if (screenSizeDp || o.screenSizeDp) {
2133 // "Better" is based on the sum of the difference between both
2134 // width and height from the requested dimensions. We are
2135 // assuming the invalid configs (with smaller dimens) have
2136 // already been filtered. Note that if a particular dimension
2137 // is unspecified, we will end up with a large value (the
2138 // difference between 0 and the requested dimension), which is
2139 // good since we will prefer a config that has specified a
2140 // dimension value.
2141 int myDelta = 0, otherDelta = 0;
2142 if (requested->screenWidthDp) {
2143 myDelta += requested->screenWidthDp - screenWidthDp;
2144 otherDelta += requested->screenWidthDp - o.screenWidthDp;
2145 }
2146 if (requested->screenHeightDp) {
2147 myDelta += requested->screenHeightDp - screenHeightDp;
2148 otherDelta += requested->screenHeightDp - o.screenHeightDp;
2149 }
2150 //ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2151 // screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2152 // requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2153 if (myDelta != otherDelta) {
2154 return myDelta < otherDelta;
2155 }
2156 }
2157
2158 if (screenLayout || o.screenLayout) {
2159 if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2160 && (requested->screenLayout & MASK_SCREENSIZE)) {
2161 // A little backwards compatibility here: undefined is
2162 // considered equivalent to normal. But only if the
2163 // requested size is at least normal; otherwise, small
2164 // is better than the default.
2165 int mySL = (screenLayout & MASK_SCREENSIZE);
2166 int oSL = (o.screenLayout & MASK_SCREENSIZE);
2167 int fixedMySL = mySL;
2168 int fixedOSL = oSL;
2169 if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2170 if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2171 if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2172 }
2173 // For screen size, the best match is the one that is
2174 // closest to the requested screen size, but not over
2175 // (the not over part is dealt with in match() below).
2176 if (fixedMySL == fixedOSL) {
2177 // If the two are the same, but 'this' is actually
2178 // undefined, then the other is really a better match.
2179 if (mySL == 0) return false;
2180 return true;
2181 }
2182 if (fixedMySL != fixedOSL) {
2183 return fixedMySL > fixedOSL;
2184 }
2185 }
2186 if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2187 && (requested->screenLayout & MASK_SCREENLONG)) {
2188 return (screenLayout & MASK_SCREENLONG);
2189 }
2190 }
2191
2192 if ((orientation != o.orientation) && requested->orientation) {
2193 return (orientation);
2194 }
2195
2196 if (uiMode || o.uiMode) {
2197 if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2198 && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2199 return (uiMode & MASK_UI_MODE_TYPE);
2200 }
2201 if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2202 && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2203 return (uiMode & MASK_UI_MODE_NIGHT);
2204 }
2205 }
2206
2207 if (screenType || o.screenType) {
2208 if (density != o.density) {
2209 // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2210 const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2211 const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2212
2213 // We always prefer DENSITY_ANY over scaling a density bucket.
2214 if (thisDensity == ResTable_config::DENSITY_ANY) {
2215 return true;
2216 } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2217 return false;
2218 }
2219
2220 int requestedDensity = requested->density;
2221 if (requested->density == 0 ||
2222 requested->density == ResTable_config::DENSITY_ANY) {
2223 requestedDensity = ResTable_config::DENSITY_MEDIUM;
2224 }
2225
2226 // DENSITY_ANY is now dealt with. We should look to
2227 // pick a density bucket and potentially scale it.
2228 // Any density is potentially useful
2229 // because the system will scale it. Scaling down
2230 // is generally better than scaling up.
2231 int h = thisDensity;
2232 int l = otherDensity;
2233 bool bImBigger = true;
2234 if (l > h) {
2235 int t = h;
2236 h = l;
2237 l = t;
2238 bImBigger = false;
2239 }
2240
2241 if (requestedDensity >= h) {
2242 // requested value higher than both l and h, give h
2243 return bImBigger;
2244 }
2245 if (l >= requestedDensity) {
2246 // requested value lower than both l and h, give l
2247 return !bImBigger;
2248 }
2249 // saying that scaling down is 2x better than up
2250 if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2251 return !bImBigger;
2252 } else {
2253 return bImBigger;
2254 }
2255 }
2256
2257 if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2258 return (touchscreen);
2259 }
2260 }
2261
2262 if (input || o.input) {
2263 const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2264 const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2265 if (keysHidden != oKeysHidden) {
2266 const int reqKeysHidden =
2267 requested->inputFlags & MASK_KEYSHIDDEN;
2268 if (reqKeysHidden) {
2269
2270 if (!keysHidden) return false;
2271 if (!oKeysHidden) return true;
2272 // For compatibility, we count KEYSHIDDEN_NO as being
2273 // the same as KEYSHIDDEN_SOFT. Here we disambiguate
2274 // these by making an exact match more specific.
2275 if (reqKeysHidden == keysHidden) return true;
2276 if (reqKeysHidden == oKeysHidden) return false;
2277 }
2278 }
2279
2280 const int navHidden = inputFlags & MASK_NAVHIDDEN;
2281 const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2282 if (navHidden != oNavHidden) {
2283 const int reqNavHidden =
2284 requested->inputFlags & MASK_NAVHIDDEN;
2285 if (reqNavHidden) {
2286
2287 if (!navHidden) return false;
2288 if (!oNavHidden) return true;
2289 }
2290 }
2291
2292 if ((keyboard != o.keyboard) && requested->keyboard) {
2293 return (keyboard);
2294 }
2295
2296 if ((navigation != o.navigation) && requested->navigation) {
2297 return (navigation);
2298 }
2299 }
2300
2301 if (screenSize || o.screenSize) {
2302 // "Better" is based on the sum of the difference between both
2303 // width and height from the requested dimensions. We are
2304 // assuming the invalid configs (with smaller sizes) have
2305 // already been filtered. Note that if a particular dimension
2306 // is unspecified, we will end up with a large value (the
2307 // difference between 0 and the requested dimension), which is
2308 // good since we will prefer a config that has specified a
2309 // size value.
2310 int myDelta = 0, otherDelta = 0;
2311 if (requested->screenWidth) {
2312 myDelta += requested->screenWidth - screenWidth;
2313 otherDelta += requested->screenWidth - o.screenWidth;
2314 }
2315 if (requested->screenHeight) {
2316 myDelta += requested->screenHeight - screenHeight;
2317 otherDelta += requested->screenHeight - o.screenHeight;
2318 }
2319 if (myDelta != otherDelta) {
2320 return myDelta < otherDelta;
2321 }
2322 }
2323
2324 if (version || o.version) {
2325 if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2326 return (sdkVersion > o.sdkVersion);
2327 }
2328
2329 if ((minorVersion != o.minorVersion) &&
2330 requested->minorVersion) {
2331 return (minorVersion);
2332 }
2333 }
2334
2335 return false;
2336 }
2337 return isMoreSpecificThan(o);
2338 }
2339
match(const ResTable_config & settings) const2340 bool ResTable_config::match(const ResTable_config& settings) const {
2341 if (imsi != 0) {
2342 if (mcc != 0 && mcc != settings.mcc) {
2343 return false;
2344 }
2345 if (mnc != 0 && mnc != settings.mnc) {
2346 return false;
2347 }
2348 }
2349 if (locale != 0) {
2350 // Don't consider the script & variants when deciding matches.
2351 //
2352 // If we two configs differ only in their script or language, they
2353 // can be weeded out in the isMoreSpecificThan test.
2354 if (language[0] != 0
2355 && (language[0] != settings.language[0]
2356 || language[1] != settings.language[1])) {
2357 return false;
2358 }
2359
2360 if (country[0] != 0
2361 && (country[0] != settings.country[0]
2362 || country[1] != settings.country[1])) {
2363 return false;
2364 }
2365 }
2366
2367 if (screenConfig != 0) {
2368 const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2369 const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2370 if (layoutDir != 0 && layoutDir != setLayoutDir) {
2371 return false;
2372 }
2373
2374 const int screenSize = screenLayout&MASK_SCREENSIZE;
2375 const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2376 // Any screen sizes for larger screens than the setting do not
2377 // match.
2378 if (screenSize != 0 && screenSize > setScreenSize) {
2379 return false;
2380 }
2381
2382 const int screenLong = screenLayout&MASK_SCREENLONG;
2383 const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2384 if (screenLong != 0 && screenLong != setScreenLong) {
2385 return false;
2386 }
2387
2388 const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2389 const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2390 if (uiModeType != 0 && uiModeType != setUiModeType) {
2391 return false;
2392 }
2393
2394 const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2395 const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2396 if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2397 return false;
2398 }
2399
2400 if (smallestScreenWidthDp != 0
2401 && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2402 return false;
2403 }
2404 }
2405 if (screenSizeDp != 0) {
2406 if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2407 //ALOGI("Filtering out width %d in requested %d", screenWidthDp, settings.screenWidthDp);
2408 return false;
2409 }
2410 if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2411 //ALOGI("Filtering out height %d in requested %d", screenHeightDp, settings.screenHeightDp);
2412 return false;
2413 }
2414 }
2415 if (screenType != 0) {
2416 if (orientation != 0 && orientation != settings.orientation) {
2417 return false;
2418 }
2419 // density always matches - we can scale it. See isBetterThan
2420 if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2421 return false;
2422 }
2423 }
2424 if (input != 0) {
2425 const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2426 const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2427 if (keysHidden != 0 && keysHidden != setKeysHidden) {
2428 // For compatibility, we count a request for KEYSHIDDEN_NO as also
2429 // matching the more recent KEYSHIDDEN_SOFT. Basically
2430 // KEYSHIDDEN_NO means there is some kind of keyboard available.
2431 //ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2432 if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2433 //ALOGI("No match!");
2434 return false;
2435 }
2436 }
2437 const int navHidden = inputFlags&MASK_NAVHIDDEN;
2438 const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2439 if (navHidden != 0 && navHidden != setNavHidden) {
2440 return false;
2441 }
2442 if (keyboard != 0 && keyboard != settings.keyboard) {
2443 return false;
2444 }
2445 if (navigation != 0 && navigation != settings.navigation) {
2446 return false;
2447 }
2448 }
2449 if (screenSize != 0) {
2450 if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2451 return false;
2452 }
2453 if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2454 return false;
2455 }
2456 }
2457 if (version != 0) {
2458 if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2459 return false;
2460 }
2461 if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2462 return false;
2463 }
2464 }
2465 return true;
2466 }
2467
getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const2468 void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const {
2469 memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2470
2471 // This represents the "any" locale value, which has traditionally been
2472 // represented by the empty string.
2473 if (!language[0] && !country[0]) {
2474 return;
2475 }
2476
2477 size_t charsWritten = 0;
2478 if (language[0]) {
2479 charsWritten += unpackLanguage(str);
2480 }
2481
2482 if (localeScript[0]) {
2483 if (charsWritten) {
2484 str[charsWritten++] = '-';
2485 }
2486 memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2487 charsWritten += sizeof(localeScript);
2488 }
2489
2490 if (country[0]) {
2491 if (charsWritten) {
2492 str[charsWritten++] = '-';
2493 }
2494 charsWritten += unpackRegion(str + charsWritten);
2495 }
2496
2497 if (localeVariant[0]) {
2498 if (charsWritten) {
2499 str[charsWritten++] = '-';
2500 }
2501 memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2502 }
2503 }
2504
assignLocaleComponent(ResTable_config * config,const char * start,size_t size)2505 /* static */ inline bool assignLocaleComponent(ResTable_config* config,
2506 const char* start, size_t size) {
2507
2508 switch (size) {
2509 case 0:
2510 return false;
2511 case 2:
2512 case 3:
2513 config->language[0] ? config->packRegion(start) : config->packLanguage(start);
2514 break;
2515 case 4:
2516 config->localeScript[0] = toupper(start[0]);
2517 for (size_t i = 1; i < 4; ++i) {
2518 config->localeScript[i] = tolower(start[i]);
2519 }
2520 break;
2521 case 5:
2522 case 6:
2523 case 7:
2524 case 8:
2525 for (size_t i = 0; i < size; ++i) {
2526 config->localeVariant[i] = tolower(start[i]);
2527 }
2528 break;
2529 default:
2530 return false;
2531 }
2532
2533 return true;
2534 }
2535
setBcp47Locale(const char * in)2536 void ResTable_config::setBcp47Locale(const char* in) {
2537 locale = 0;
2538 memset(localeScript, 0, sizeof(localeScript));
2539 memset(localeVariant, 0, sizeof(localeVariant));
2540
2541 const char* separator = in;
2542 const char* start = in;
2543 while ((separator = strchr(start, '-')) != NULL) {
2544 const size_t size = separator - start;
2545 if (!assignLocaleComponent(this, start, size)) {
2546 fprintf(stderr, "Invalid BCP-47 locale string: %s", in);
2547 }
2548
2549 start = (separator + 1);
2550 }
2551
2552 const size_t size = in + strlen(in) - start;
2553 assignLocaleComponent(this, start, size);
2554 }
2555
toString() const2556 String8 ResTable_config::toString() const {
2557 String8 res;
2558
2559 if (mcc != 0) {
2560 if (res.size() > 0) res.append("-");
2561 res.appendFormat("mcc%d", dtohs(mcc));
2562 }
2563 if (mnc != 0) {
2564 if (res.size() > 0) res.append("-");
2565 res.appendFormat("mnc%d", dtohs(mnc));
2566 }
2567
2568 char localeStr[RESTABLE_MAX_LOCALE_LEN];
2569 getBcp47Locale(localeStr);
2570 if (strlen(localeStr) > 0) {
2571 if (res.size() > 0) res.append("-");
2572 res.append(localeStr);
2573 }
2574
2575 if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2576 if (res.size() > 0) res.append("-");
2577 switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2578 case ResTable_config::LAYOUTDIR_LTR:
2579 res.append("ldltr");
2580 break;
2581 case ResTable_config::LAYOUTDIR_RTL:
2582 res.append("ldrtl");
2583 break;
2584 default:
2585 res.appendFormat("layoutDir=%d",
2586 dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2587 break;
2588 }
2589 }
2590 if (smallestScreenWidthDp != 0) {
2591 if (res.size() > 0) res.append("-");
2592 res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2593 }
2594 if (screenWidthDp != 0) {
2595 if (res.size() > 0) res.append("-");
2596 res.appendFormat("w%ddp", dtohs(screenWidthDp));
2597 }
2598 if (screenHeightDp != 0) {
2599 if (res.size() > 0) res.append("-");
2600 res.appendFormat("h%ddp", dtohs(screenHeightDp));
2601 }
2602 if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2603 if (res.size() > 0) res.append("-");
2604 switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2605 case ResTable_config::SCREENSIZE_SMALL:
2606 res.append("small");
2607 break;
2608 case ResTable_config::SCREENSIZE_NORMAL:
2609 res.append("normal");
2610 break;
2611 case ResTable_config::SCREENSIZE_LARGE:
2612 res.append("large");
2613 break;
2614 case ResTable_config::SCREENSIZE_XLARGE:
2615 res.append("xlarge");
2616 break;
2617 default:
2618 res.appendFormat("screenLayoutSize=%d",
2619 dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2620 break;
2621 }
2622 }
2623 if ((screenLayout&MASK_SCREENLONG) != 0) {
2624 if (res.size() > 0) res.append("-");
2625 switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2626 case ResTable_config::SCREENLONG_NO:
2627 res.append("notlong");
2628 break;
2629 case ResTable_config::SCREENLONG_YES:
2630 res.append("long");
2631 break;
2632 default:
2633 res.appendFormat("screenLayoutLong=%d",
2634 dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2635 break;
2636 }
2637 }
2638 if (orientation != ORIENTATION_ANY) {
2639 if (res.size() > 0) res.append("-");
2640 switch (orientation) {
2641 case ResTable_config::ORIENTATION_PORT:
2642 res.append("port");
2643 break;
2644 case ResTable_config::ORIENTATION_LAND:
2645 res.append("land");
2646 break;
2647 case ResTable_config::ORIENTATION_SQUARE:
2648 res.append("square");
2649 break;
2650 default:
2651 res.appendFormat("orientation=%d", dtohs(orientation));
2652 break;
2653 }
2654 }
2655 if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2656 if (res.size() > 0) res.append("-");
2657 switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2658 case ResTable_config::UI_MODE_TYPE_DESK:
2659 res.append("desk");
2660 break;
2661 case ResTable_config::UI_MODE_TYPE_CAR:
2662 res.append("car");
2663 break;
2664 case ResTable_config::UI_MODE_TYPE_TELEVISION:
2665 res.append("television");
2666 break;
2667 case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2668 res.append("appliance");
2669 break;
2670 case ResTable_config::UI_MODE_TYPE_WATCH:
2671 res.append("watch");
2672 break;
2673 default:
2674 res.appendFormat("uiModeType=%d",
2675 dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2676 break;
2677 }
2678 }
2679 if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2680 if (res.size() > 0) res.append("-");
2681 switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2682 case ResTable_config::UI_MODE_NIGHT_NO:
2683 res.append("notnight");
2684 break;
2685 case ResTable_config::UI_MODE_NIGHT_YES:
2686 res.append("night");
2687 break;
2688 default:
2689 res.appendFormat("uiModeNight=%d",
2690 dtohs(uiMode&MASK_UI_MODE_NIGHT));
2691 break;
2692 }
2693 }
2694 if (density != DENSITY_DEFAULT) {
2695 if (res.size() > 0) res.append("-");
2696 switch (density) {
2697 case ResTable_config::DENSITY_LOW:
2698 res.append("ldpi");
2699 break;
2700 case ResTable_config::DENSITY_MEDIUM:
2701 res.append("mdpi");
2702 break;
2703 case ResTable_config::DENSITY_TV:
2704 res.append("tvdpi");
2705 break;
2706 case ResTable_config::DENSITY_HIGH:
2707 res.append("hdpi");
2708 break;
2709 case ResTable_config::DENSITY_XHIGH:
2710 res.append("xhdpi");
2711 break;
2712 case ResTable_config::DENSITY_XXHIGH:
2713 res.append("xxhdpi");
2714 break;
2715 case ResTable_config::DENSITY_XXXHIGH:
2716 res.append("xxxhdpi");
2717 break;
2718 case ResTable_config::DENSITY_NONE:
2719 res.append("nodpi");
2720 break;
2721 case ResTable_config::DENSITY_ANY:
2722 res.append("anydpi");
2723 break;
2724 default:
2725 res.appendFormat("%ddpi", dtohs(density));
2726 break;
2727 }
2728 }
2729 if (touchscreen != TOUCHSCREEN_ANY) {
2730 if (res.size() > 0) res.append("-");
2731 switch (touchscreen) {
2732 case ResTable_config::TOUCHSCREEN_NOTOUCH:
2733 res.append("notouch");
2734 break;
2735 case ResTable_config::TOUCHSCREEN_FINGER:
2736 res.append("finger");
2737 break;
2738 case ResTable_config::TOUCHSCREEN_STYLUS:
2739 res.append("stylus");
2740 break;
2741 default:
2742 res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2743 break;
2744 }
2745 }
2746 if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2747 if (res.size() > 0) res.append("-");
2748 switch (inputFlags&MASK_KEYSHIDDEN) {
2749 case ResTable_config::KEYSHIDDEN_NO:
2750 res.append("keysexposed");
2751 break;
2752 case ResTable_config::KEYSHIDDEN_YES:
2753 res.append("keyshidden");
2754 break;
2755 case ResTable_config::KEYSHIDDEN_SOFT:
2756 res.append("keyssoft");
2757 break;
2758 }
2759 }
2760 if (keyboard != KEYBOARD_ANY) {
2761 if (res.size() > 0) res.append("-");
2762 switch (keyboard) {
2763 case ResTable_config::KEYBOARD_NOKEYS:
2764 res.append("nokeys");
2765 break;
2766 case ResTable_config::KEYBOARD_QWERTY:
2767 res.append("qwerty");
2768 break;
2769 case ResTable_config::KEYBOARD_12KEY:
2770 res.append("12key");
2771 break;
2772 default:
2773 res.appendFormat("keyboard=%d", dtohs(keyboard));
2774 break;
2775 }
2776 }
2777 if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2778 if (res.size() > 0) res.append("-");
2779 switch (inputFlags&MASK_NAVHIDDEN) {
2780 case ResTable_config::NAVHIDDEN_NO:
2781 res.append("navexposed");
2782 break;
2783 case ResTable_config::NAVHIDDEN_YES:
2784 res.append("navhidden");
2785 break;
2786 default:
2787 res.appendFormat("inputFlagsNavHidden=%d",
2788 dtohs(inputFlags&MASK_NAVHIDDEN));
2789 break;
2790 }
2791 }
2792 if (navigation != NAVIGATION_ANY) {
2793 if (res.size() > 0) res.append("-");
2794 switch (navigation) {
2795 case ResTable_config::NAVIGATION_NONAV:
2796 res.append("nonav");
2797 break;
2798 case ResTable_config::NAVIGATION_DPAD:
2799 res.append("dpad");
2800 break;
2801 case ResTable_config::NAVIGATION_TRACKBALL:
2802 res.append("trackball");
2803 break;
2804 case ResTable_config::NAVIGATION_WHEEL:
2805 res.append("wheel");
2806 break;
2807 default:
2808 res.appendFormat("navigation=%d", dtohs(navigation));
2809 break;
2810 }
2811 }
2812 if (screenSize != 0) {
2813 if (res.size() > 0) res.append("-");
2814 res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2815 }
2816 if (version != 0) {
2817 if (res.size() > 0) res.append("-");
2818 res.appendFormat("v%d", dtohs(sdkVersion));
2819 if (minorVersion != 0) {
2820 res.appendFormat(".%d", dtohs(minorVersion));
2821 }
2822 }
2823
2824 return res;
2825 }
2826
2827 // --------------------------------------------------------------------
2828 // --------------------------------------------------------------------
2829 // --------------------------------------------------------------------
2830
2831 struct ResTable::Header
2832 {
Headerandroid::ResTable::Header2833 Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
2834 resourceIDMap(NULL), resourceIDMapSize(0) { }
2835
~Headerandroid::ResTable::Header2836 ~Header()
2837 {
2838 free(resourceIDMap);
2839 }
2840
2841 const ResTable* const owner;
2842 void* ownedData;
2843 const ResTable_header* header;
2844 size_t size;
2845 const uint8_t* dataEnd;
2846 size_t index;
2847 int32_t cookie;
2848
2849 ResStringPool values;
2850 uint32_t* resourceIDMap;
2851 size_t resourceIDMapSize;
2852 };
2853
2854 struct ResTable::Entry {
2855 ResTable_config config;
2856 const ResTable_entry* entry;
2857 const ResTable_type* type;
2858 uint32_t specFlags;
2859 const Package* package;
2860
2861 StringPoolRef typeStr;
2862 StringPoolRef keyStr;
2863 };
2864
2865 struct ResTable::Type
2866 {
Typeandroid::ResTable::Type2867 Type(const Header* _header, const Package* _package, size_t count)
2868 : header(_header), package(_package), entryCount(count),
2869 typeSpec(NULL), typeSpecFlags(NULL) { }
2870 const Header* const header;
2871 const Package* const package;
2872 const size_t entryCount;
2873 const ResTable_typeSpec* typeSpec;
2874 const uint32_t* typeSpecFlags;
2875 IdmapEntries idmapEntries;
2876 Vector<const ResTable_type*> configs;
2877 };
2878
2879 struct ResTable::Package
2880 {
Packageandroid::ResTable::Package2881 Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
2882 : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
2883 if (dtohs(package->header.headerSize) == sizeof(package)) {
2884 // The package structure is the same size as the definition.
2885 // This means it contains the typeIdOffset field.
2886 typeIdOffset = package->typeIdOffset;
2887 }
2888 }
2889
2890 const ResTable* const owner;
2891 const Header* const header;
2892 const ResTable_package* const package;
2893
2894 ResStringPool typeStrings;
2895 ResStringPool keyStrings;
2896
2897 size_t typeIdOffset;
2898 };
2899
2900 // A group of objects describing a particular resource package.
2901 // The first in 'package' is always the root object (from the resource
2902 // table that defined the package); the ones after are skins on top of it.
2903 struct ResTable::PackageGroup
2904 {
PackageGroupandroid::ResTable::PackageGroup2905 PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
2906 : owner(_owner)
2907 , name(_name)
2908 , id(_id)
2909 , largestTypeId(0)
2910 , bags(NULL)
2911 , dynamicRefTable(static_cast<uint8_t>(_id))
2912 { }
2913
~PackageGroupandroid::ResTable::PackageGroup2914 ~PackageGroup() {
2915 clearBagCache();
2916 const size_t numTypes = types.size();
2917 for (size_t i = 0; i < numTypes; i++) {
2918 const TypeList& typeList = types[i];
2919 const size_t numInnerTypes = typeList.size();
2920 for (size_t j = 0; j < numInnerTypes; j++) {
2921 if (typeList[j]->package->owner == owner) {
2922 delete typeList[j];
2923 }
2924 }
2925 }
2926
2927 const size_t N = packages.size();
2928 for (size_t i=0; i<N; i++) {
2929 Package* pkg = packages[i];
2930 if (pkg->owner == owner) {
2931 delete pkg;
2932 }
2933 }
2934 }
2935
clearBagCacheandroid::ResTable::PackageGroup2936 void clearBagCache() {
2937 if (bags) {
2938 TABLE_NOISY(printf("bags=%p\n", bags));
2939 for (size_t i = 0; i < bags->size(); i++) {
2940 TABLE_NOISY(printf("type=%d\n", i));
2941 const TypeList& typeList = types[i];
2942 if (!typeList.isEmpty()) {
2943 bag_set** typeBags = bags->get(i);
2944 TABLE_NOISY(printf("typeBags=%p\n", typeBags));
2945 if (typeBags) {
2946 const size_t N = typeList[0]->entryCount;
2947 TABLE_NOISY(printf("type->entryCount=%x\n", N));
2948 for (size_t j=0; j<N; j++) {
2949 if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
2950 free(typeBags[j]);
2951 }
2952 free(typeBags);
2953 }
2954 }
2955 }
2956 delete bags;
2957 bags = NULL;
2958 }
2959 }
2960
findType16android::ResTable::PackageGroup2961 ssize_t findType16(const char16_t* type, size_t len) const {
2962 const size_t N = packages.size();
2963 for (size_t i = 0; i < N; i++) {
2964 ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
2965 if (index >= 0) {
2966 return index + packages[i]->typeIdOffset;
2967 }
2968 }
2969 return -1;
2970 }
2971
2972 const ResTable* const owner;
2973 String16 const name;
2974 uint32_t const id;
2975
2976 // This is mainly used to keep track of the loaded packages
2977 // and to clean them up properly. Accessing resources happens from
2978 // the 'types' array.
2979 Vector<Package*> packages;
2980
2981 ByteBucketArray<TypeList> types;
2982
2983 uint8_t largestTypeId;
2984
2985 // Computed attribute bags, first indexed by the type and second
2986 // by the entry in that type.
2987 ByteBucketArray<bag_set**>* bags;
2988
2989 // The table mapping dynamic references to resolved references for
2990 // this package group.
2991 // TODO: We may be able to support dynamic references in overlays
2992 // by having these tables in a per-package scope rather than
2993 // per-package-group.
2994 DynamicRefTable dynamicRefTable;
2995 };
2996
2997 struct ResTable::bag_set
2998 {
2999 size_t numAttrs; // number in array
3000 size_t availAttrs; // total space in array
3001 uint32_t typeSpecFlags;
3002 // Followed by 'numAttr' bag_entry structures.
3003 };
3004
Theme(const ResTable & table)3005 ResTable::Theme::Theme(const ResTable& table)
3006 : mTable(table)
3007 {
3008 memset(mPackages, 0, sizeof(mPackages));
3009 }
3010
~Theme()3011 ResTable::Theme::~Theme()
3012 {
3013 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3014 package_info* pi = mPackages[i];
3015 if (pi != NULL) {
3016 free_package(pi);
3017 }
3018 }
3019 }
3020
free_package(package_info * pi)3021 void ResTable::Theme::free_package(package_info* pi)
3022 {
3023 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3024 theme_entry* te = pi->types[j].entries;
3025 if (te != NULL) {
3026 free(te);
3027 }
3028 }
3029 free(pi);
3030 }
3031
copy_package(package_info * pi)3032 ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3033 {
3034 package_info* newpi = (package_info*)malloc(sizeof(package_info));
3035 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3036 size_t cnt = pi->types[j].numEntries;
3037 newpi->types[j].numEntries = cnt;
3038 theme_entry* te = pi->types[j].entries;
3039 if (te != NULL) {
3040 theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3041 newpi->types[j].entries = newte;
3042 memcpy(newte, te, cnt*sizeof(theme_entry));
3043 } else {
3044 newpi->types[j].entries = NULL;
3045 }
3046 }
3047 return newpi;
3048 }
3049
applyStyle(uint32_t resID,bool force)3050 status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3051 {
3052 const bag_entry* bag;
3053 uint32_t bagTypeSpecFlags = 0;
3054 mTable.lock();
3055 const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3056 TABLE_NOISY(ALOGV("Applying style 0x%08x to theme %p, count=%d", resID, this, N));
3057 if (N < 0) {
3058 mTable.unlock();
3059 return N;
3060 }
3061
3062 uint32_t curPackage = 0xffffffff;
3063 ssize_t curPackageIndex = 0;
3064 package_info* curPI = NULL;
3065 uint32_t curType = 0xffffffff;
3066 size_t numEntries = 0;
3067 theme_entry* curEntries = NULL;
3068
3069 const bag_entry* end = bag + N;
3070 while (bag < end) {
3071 const uint32_t attrRes = bag->map.name.ident;
3072 const uint32_t p = Res_GETPACKAGE(attrRes);
3073 const uint32_t t = Res_GETTYPE(attrRes);
3074 const uint32_t e = Res_GETENTRY(attrRes);
3075
3076 if (curPackage != p) {
3077 const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3078 if (pidx < 0) {
3079 ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3080 bag++;
3081 continue;
3082 }
3083 curPackage = p;
3084 curPackageIndex = pidx;
3085 curPI = mPackages[pidx];
3086 if (curPI == NULL) {
3087 PackageGroup* const grp = mTable.mPackageGroups[pidx];
3088 curPI = (package_info*)malloc(sizeof(package_info));
3089 memset(curPI, 0, sizeof(*curPI));
3090 mPackages[pidx] = curPI;
3091 }
3092 curType = 0xffffffff;
3093 }
3094 if (curType != t) {
3095 if (t > Res_MAXTYPE) {
3096 ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3097 bag++;
3098 continue;
3099 }
3100 curType = t;
3101 curEntries = curPI->types[t].entries;
3102 if (curEntries == NULL) {
3103 PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3104 const TypeList& typeList = grp->types[t];
3105 int cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3106 curEntries = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3107 memset(curEntries, Res_value::TYPE_NULL, cnt*sizeof(theme_entry));
3108 curPI->types[t].numEntries = cnt;
3109 curPI->types[t].entries = curEntries;
3110 }
3111 numEntries = curPI->types[t].numEntries;
3112 }
3113 if (e >= numEntries) {
3114 ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3115 bag++;
3116 continue;
3117 }
3118 theme_entry* curEntry = curEntries + e;
3119 TABLE_NOISY(ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3120 attrRes, bag->map.value.dataType, bag->map.value.data,
3121 curEntry->value.dataType));
3122 if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
3123 curEntry->stringBlock = bag->stringBlock;
3124 curEntry->typeSpecFlags |= bagTypeSpecFlags;
3125 curEntry->value = bag->map.value;
3126 }
3127
3128 bag++;
3129 }
3130
3131 mTable.unlock();
3132
3133 //ALOGI("Applying style 0x%08x (force=%d) theme %p...\n", resID, force, this);
3134 //dumpToLog();
3135
3136 return NO_ERROR;
3137 }
3138
setTo(const Theme & other)3139 status_t ResTable::Theme::setTo(const Theme& other)
3140 {
3141 //ALOGI("Setting theme %p from theme %p...\n", this, &other);
3142 //dumpToLog();
3143 //other.dumpToLog();
3144
3145 if (&mTable == &other.mTable) {
3146 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3147 if (mPackages[i] != NULL) {
3148 free_package(mPackages[i]);
3149 }
3150 if (other.mPackages[i] != NULL) {
3151 mPackages[i] = copy_package(other.mPackages[i]);
3152 } else {
3153 mPackages[i] = NULL;
3154 }
3155 }
3156 } else {
3157 // @todo: need to really implement this, not just copy
3158 // the system package (which is still wrong because it isn't
3159 // fixing up resource references).
3160 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3161 if (mPackages[i] != NULL) {
3162 free_package(mPackages[i]);
3163 }
3164 if (i == 0 && other.mPackages[i] != NULL) {
3165 mPackages[i] = copy_package(other.mPackages[i]);
3166 } else {
3167 mPackages[i] = NULL;
3168 }
3169 }
3170 }
3171
3172 //ALOGI("Final theme:");
3173 //dumpToLog();
3174
3175 return NO_ERROR;
3176 }
3177
getAttribute(uint32_t resID,Res_value * outValue,uint32_t * outTypeSpecFlags) const3178 ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3179 uint32_t* outTypeSpecFlags) const
3180 {
3181 int cnt = 20;
3182
3183 if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3184
3185 do {
3186 const ssize_t p = mTable.getResourcePackageIndex(resID);
3187 const uint32_t t = Res_GETTYPE(resID);
3188 const uint32_t e = Res_GETENTRY(resID);
3189
3190 TABLE_THEME(ALOGI("Looking up attr 0x%08x in theme %p", resID, this));
3191
3192 if (p >= 0) {
3193 const package_info* const pi = mPackages[p];
3194 TABLE_THEME(ALOGI("Found package: %p", pi));
3195 if (pi != NULL) {
3196 TABLE_THEME(ALOGI("Desired type index is %ld in avail %d", t, Res_MAXTYPE + 1));
3197 if (t <= Res_MAXTYPE) {
3198 const type_info& ti = pi->types[t];
3199 TABLE_THEME(ALOGI("Desired entry index is %ld in avail %d", e, ti.numEntries));
3200 if (e < ti.numEntries) {
3201 const theme_entry& te = ti.entries[e];
3202 if (outTypeSpecFlags != NULL) {
3203 *outTypeSpecFlags |= te.typeSpecFlags;
3204 }
3205 TABLE_THEME(ALOGI("Theme value: type=0x%x, data=0x%08x",
3206 te.value.dataType, te.value.data));
3207 const uint8_t type = te.value.dataType;
3208 if (type == Res_value::TYPE_ATTRIBUTE) {
3209 if (cnt > 0) {
3210 cnt--;
3211 resID = te.value.data;
3212 continue;
3213 }
3214 ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3215 return BAD_INDEX;
3216 } else if (type != Res_value::TYPE_NULL) {
3217 *outValue = te.value;
3218 return te.stringBlock;
3219 }
3220 return BAD_INDEX;
3221 }
3222 }
3223 }
3224 }
3225 break;
3226
3227 } while (true);
3228
3229 return BAD_INDEX;
3230 }
3231
resolveAttributeReference(Res_value * inOutValue,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * inoutConfig) const3232 ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3233 ssize_t blockIndex, uint32_t* outLastRef,
3234 uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3235 {
3236 //printf("Resolving type=0x%x\n", inOutValue->dataType);
3237 if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3238 uint32_t newTypeSpecFlags;
3239 blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3240 TABLE_THEME(ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=%p\n",
3241 (int)blockIndex, (int)inOutValue->dataType, (void*)inOutValue->data));
3242 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3243 //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3244 if (blockIndex < 0) {
3245 return blockIndex;
3246 }
3247 }
3248 return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3249 inoutTypeSpecFlags, inoutConfig);
3250 }
3251
dumpToLog() const3252 void ResTable::Theme::dumpToLog() const
3253 {
3254 ALOGI("Theme %p:\n", this);
3255 for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3256 package_info* pi = mPackages[i];
3257 if (pi == NULL) continue;
3258
3259 ALOGI(" Package #0x%02x:\n", (int)(i + 1));
3260 for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3261 type_info& ti = pi->types[j];
3262 if (ti.numEntries == 0) continue;
3263 ALOGI(" Type #0x%02x:\n", (int)(j + 1));
3264 for (size_t k = 0; k < ti.numEntries; k++) {
3265 const theme_entry& te = ti.entries[k];
3266 if (te.value.dataType == Res_value::TYPE_NULL) continue;
3267 ALOGI(" 0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3268 (int)Res_MAKEID(i, j, k),
3269 te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3270 }
3271 }
3272 }
3273 }
3274
ResTable()3275 ResTable::ResTable()
3276 : mError(NO_INIT), mNextPackageId(2)
3277 {
3278 memset(&mParams, 0, sizeof(mParams));
3279 memset(mPackageMap, 0, sizeof(mPackageMap));
3280 //ALOGI("Creating ResTable %p\n", this);
3281 }
3282
ResTable(const void * data,size_t size,const int32_t cookie,bool copyData)3283 ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3284 : mError(NO_INIT), mNextPackageId(2)
3285 {
3286 memset(&mParams, 0, sizeof(mParams));
3287 memset(mPackageMap, 0, sizeof(mPackageMap));
3288 addInternal(data, size, NULL, 0, cookie, copyData);
3289 LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3290 //ALOGI("Creating ResTable %p\n", this);
3291 }
3292
~ResTable()3293 ResTable::~ResTable()
3294 {
3295 //ALOGI("Destroying ResTable in %p\n", this);
3296 uninit();
3297 }
3298
getResourcePackageIndex(uint32_t resID) const3299 inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3300 {
3301 return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3302 }
3303
add(const void * data,size_t size,const int32_t cookie,bool copyData)3304 status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3305 return addInternal(data, size, NULL, 0, cookie, copyData);
3306 }
3307
add(const void * data,size_t size,const void * idmapData,size_t idmapDataSize,const int32_t cookie,bool copyData)3308 status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3309 const int32_t cookie, bool copyData) {
3310 return addInternal(data, size, idmapData, idmapDataSize, cookie, copyData);
3311 }
3312
add(Asset * asset,const int32_t cookie,bool copyData)3313 status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
3314 const void* data = asset->getBuffer(true);
3315 if (data == NULL) {
3316 ALOGW("Unable to get buffer of resource asset file");
3317 return UNKNOWN_ERROR;
3318 }
3319
3320 return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, 0, cookie, copyData);
3321 }
3322
add(Asset * asset,Asset * idmapAsset,const int32_t cookie,bool copyData)3323 status_t ResTable::add(Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData) {
3324 const void* data = asset->getBuffer(true);
3325 if (data == NULL) {
3326 ALOGW("Unable to get buffer of resource asset file");
3327 return UNKNOWN_ERROR;
3328 }
3329
3330 size_t idmapSize = 0;
3331 const void* idmapData = NULL;
3332 if (idmapAsset != NULL) {
3333 idmapData = idmapAsset->getBuffer(true);
3334 if (idmapData == NULL) {
3335 ALOGW("Unable to get buffer of idmap asset file");
3336 return UNKNOWN_ERROR;
3337 }
3338 idmapSize = static_cast<size_t>(idmapAsset->getLength());
3339 }
3340
3341 return addInternal(data, static_cast<size_t>(asset->getLength()),
3342 idmapData, idmapSize, cookie, copyData);
3343 }
3344
add(ResTable * src)3345 status_t ResTable::add(ResTable* src)
3346 {
3347 mError = src->mError;
3348
3349 for (size_t i=0; i<src->mHeaders.size(); i++) {
3350 mHeaders.add(src->mHeaders[i]);
3351 }
3352
3353 for (size_t i=0; i<src->mPackageGroups.size(); i++) {
3354 PackageGroup* srcPg = src->mPackageGroups[i];
3355 PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
3356 for (size_t j=0; j<srcPg->packages.size(); j++) {
3357 pg->packages.add(srcPg->packages[j]);
3358 }
3359
3360 for (size_t j = 0; j < srcPg->types.size(); j++) {
3361 if (srcPg->types[j].isEmpty()) {
3362 continue;
3363 }
3364
3365 TypeList& typeList = pg->types.editItemAt(j);
3366 typeList.appendVector(srcPg->types[j]);
3367 }
3368 pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
3369 pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
3370 mPackageGroups.add(pg);
3371 }
3372
3373 memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
3374
3375 return mError;
3376 }
3377
addEmpty(const int32_t cookie)3378 status_t ResTable::addEmpty(const int32_t cookie) {
3379 Header* header = new Header(this);
3380 header->index = mHeaders.size();
3381 header->cookie = cookie;
3382 header->values.setToEmpty();
3383 header->ownedData = calloc(1, sizeof(ResTable_header));
3384
3385 ResTable_header* resHeader = (ResTable_header*) header->ownedData;
3386 resHeader->header.type = RES_TABLE_TYPE;
3387 resHeader->header.headerSize = sizeof(ResTable_header);
3388 resHeader->header.size = sizeof(ResTable_header);
3389
3390 header->header = (const ResTable_header*) resHeader;
3391 mHeaders.add(header);
3392 return (mError=NO_ERROR);
3393 }
3394
addInternal(const void * data,size_t dataSize,const void * idmapData,size_t idmapDataSize,const int32_t cookie,bool copyData)3395 status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
3396 const int32_t cookie, bool copyData)
3397 {
3398 if (!data) {
3399 return NO_ERROR;
3400 }
3401
3402 if (dataSize < sizeof(ResTable_header)) {
3403 ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
3404 (int) dataSize, (int) sizeof(ResTable_header));
3405 return UNKNOWN_ERROR;
3406 }
3407
3408 Header* header = new Header(this);
3409 header->index = mHeaders.size();
3410 header->cookie = cookie;
3411 if (idmapData != NULL) {
3412 header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
3413 if (header->resourceIDMap == NULL) {
3414 delete header;
3415 return (mError = NO_MEMORY);
3416 }
3417 memcpy(header->resourceIDMap, idmapData, idmapDataSize);
3418 header->resourceIDMapSize = idmapDataSize;
3419 }
3420 mHeaders.add(header);
3421
3422 const bool notDeviceEndian = htods(0xf0) != 0xf0;
3423
3424 LOAD_TABLE_NOISY(
3425 ALOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%d, copy=%d "
3426 "idmap=%p\n", data, dataSize, cookie, copyData, idmap));
3427
3428 if (copyData || notDeviceEndian) {
3429 header->ownedData = malloc(dataSize);
3430 if (header->ownedData == NULL) {
3431 return (mError=NO_MEMORY);
3432 }
3433 memcpy(header->ownedData, data, dataSize);
3434 data = header->ownedData;
3435 }
3436
3437 header->header = (const ResTable_header*)data;
3438 header->size = dtohl(header->header->header.size);
3439 //ALOGI("Got size 0x%x, again size 0x%x, raw size 0x%x\n", header->size,
3440 // dtohl(header->header->header.size), header->header->header.size);
3441 LOAD_TABLE_NOISY(ALOGV("Loading ResTable @%p:\n", header->header));
3442 if (dtohs(header->header->header.headerSize) > header->size
3443 || header->size > dataSize) {
3444 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
3445 (int)dtohs(header->header->header.headerSize),
3446 (int)header->size, (int)dataSize);
3447 return (mError=BAD_TYPE);
3448 }
3449 if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
3450 ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
3451 (int)dtohs(header->header->header.headerSize),
3452 (int)header->size);
3453 return (mError=BAD_TYPE);
3454 }
3455 header->dataEnd = ((const uint8_t*)header->header) + header->size;
3456
3457 // Iterate through all chunks.
3458 size_t curPackage = 0;
3459
3460 const ResChunk_header* chunk =
3461 (const ResChunk_header*)(((const uint8_t*)header->header)
3462 + dtohs(header->header->header.headerSize));
3463 while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
3464 ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
3465 status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
3466 if (err != NO_ERROR) {
3467 return (mError=err);
3468 }
3469 TABLE_NOISY(ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
3470 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
3471 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
3472 const size_t csize = dtohl(chunk->size);
3473 const uint16_t ctype = dtohs(chunk->type);
3474 if (ctype == RES_STRING_POOL_TYPE) {
3475 if (header->values.getError() != NO_ERROR) {
3476 // Only use the first string chunk; ignore any others that
3477 // may appear.
3478 status_t err = header->values.setTo(chunk, csize);
3479 if (err != NO_ERROR) {
3480 return (mError=err);
3481 }
3482 } else {
3483 ALOGW("Multiple string chunks found in resource table.");
3484 }
3485 } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
3486 if (curPackage >= dtohl(header->header->packageCount)) {
3487 ALOGW("More package chunks were found than the %d declared in the header.",
3488 dtohl(header->header->packageCount));
3489 return (mError=BAD_TYPE);
3490 }
3491
3492 if (parsePackage((ResTable_package*)chunk, header) != NO_ERROR) {
3493 return mError;
3494 }
3495 curPackage++;
3496 } else {
3497 ALOGW("Unknown chunk type 0x%x in table at %p.\n",
3498 ctype,
3499 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3500 }
3501 chunk = (const ResChunk_header*)
3502 (((const uint8_t*)chunk) + csize);
3503 }
3504
3505 if (curPackage < dtohl(header->header->packageCount)) {
3506 ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
3507 (int)curPackage, dtohl(header->header->packageCount));
3508 return (mError=BAD_TYPE);
3509 }
3510 mError = header->values.getError();
3511 if (mError != NO_ERROR) {
3512 ALOGW("No string values found in resource table!");
3513 }
3514
3515 TABLE_NOISY(ALOGV("Returning from add with mError=%d\n", mError));
3516 return mError;
3517 }
3518
getError() const3519 status_t ResTable::getError() const
3520 {
3521 return mError;
3522 }
3523
uninit()3524 void ResTable::uninit()
3525 {
3526 mError = NO_INIT;
3527 size_t N = mPackageGroups.size();
3528 for (size_t i=0; i<N; i++) {
3529 PackageGroup* g = mPackageGroups[i];
3530 delete g;
3531 }
3532 N = mHeaders.size();
3533 for (size_t i=0; i<N; i++) {
3534 Header* header = mHeaders[i];
3535 if (header->owner == this) {
3536 if (header->ownedData) {
3537 free(header->ownedData);
3538 }
3539 delete header;
3540 }
3541 }
3542
3543 mPackageGroups.clear();
3544 mHeaders.clear();
3545 }
3546
getResourceName(uint32_t resID,bool allowUtf8,resource_name * outName) const3547 bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
3548 {
3549 if (mError != NO_ERROR) {
3550 return false;
3551 }
3552
3553 const ssize_t p = getResourcePackageIndex(resID);
3554 const int t = Res_GETTYPE(resID);
3555 const int e = Res_GETENTRY(resID);
3556
3557 if (p < 0) {
3558 if (Res_GETPACKAGE(resID)+1 == 0) {
3559 ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
3560 } else {
3561 ALOGW("No known package when getting name for resource number 0x%08x", resID);
3562 }
3563 return false;
3564 }
3565 if (t < 0) {
3566 ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
3567 return false;
3568 }
3569
3570 const PackageGroup* const grp = mPackageGroups[p];
3571 if (grp == NULL) {
3572 ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
3573 return false;
3574 }
3575
3576 Entry entry;
3577 status_t err = getEntry(grp, t, e, NULL, &entry);
3578 if (err != NO_ERROR) {
3579 return false;
3580 }
3581
3582 outName->package = grp->name.string();
3583 outName->packageLen = grp->name.size();
3584 if (allowUtf8) {
3585 outName->type8 = entry.typeStr.string8(&outName->typeLen);
3586 outName->name8 = entry.keyStr.string8(&outName->nameLen);
3587 } else {
3588 outName->type8 = NULL;
3589 outName->name8 = NULL;
3590 }
3591 if (outName->type8 == NULL) {
3592 outName->type = entry.typeStr.string16(&outName->typeLen);
3593 // If we have a bad index for some reason, we should abort.
3594 if (outName->type == NULL) {
3595 return false;
3596 }
3597 }
3598 if (outName->name8 == NULL) {
3599 outName->name = entry.keyStr.string16(&outName->nameLen);
3600 // If we have a bad index for some reason, we should abort.
3601 if (outName->name == NULL) {
3602 return false;
3603 }
3604 }
3605
3606 return true;
3607 }
3608
getResource(uint32_t resID,Res_value * outValue,bool mayBeBag,uint16_t density,uint32_t * outSpecFlags,ResTable_config * outConfig) const3609 ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
3610 uint32_t* outSpecFlags, ResTable_config* outConfig) const
3611 {
3612 if (mError != NO_ERROR) {
3613 return mError;
3614 }
3615
3616 const ssize_t p = getResourcePackageIndex(resID);
3617 const int t = Res_GETTYPE(resID);
3618 const int e = Res_GETENTRY(resID);
3619
3620 if (p < 0) {
3621 if (Res_GETPACKAGE(resID)+1 == 0) {
3622 ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
3623 } else {
3624 ALOGW("No known package when getting value for resource number 0x%08x", resID);
3625 }
3626 return BAD_INDEX;
3627 }
3628 if (t < 0) {
3629 ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
3630 return BAD_INDEX;
3631 }
3632
3633 const PackageGroup* const grp = mPackageGroups[p];
3634 if (grp == NULL) {
3635 ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
3636 return BAD_INDEX;
3637 }
3638
3639 // Allow overriding density
3640 ResTable_config desiredConfig = mParams;
3641 if (density > 0) {
3642 desiredConfig.density = density;
3643 }
3644
3645 Entry entry;
3646 status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
3647 if (err != NO_ERROR) {
3648 ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
3649 resID, t, e, err);
3650 return err;
3651 }
3652
3653 if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
3654 if (!mayBeBag) {
3655 ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
3656 }
3657 return BAD_VALUE;
3658 }
3659
3660 const Res_value* value = reinterpret_cast<const Res_value*>(
3661 reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
3662
3663 outValue->size = dtohs(value->size);
3664 outValue->res0 = value->res0;
3665 outValue->dataType = value->dataType;
3666 outValue->data = dtohl(value->data);
3667
3668 // The reference may be pointing to a resource in a shared library. These
3669 // references have build-time generated package IDs. These ids may not match
3670 // the actual package IDs of the corresponding packages in this ResTable.
3671 // We need to fix the package ID based on a mapping.
3672 if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
3673 ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
3674 return BAD_VALUE;
3675 }
3676
3677 TABLE_NOISY(size_t len;
3678 printf("Found value: pkg=%d, type=%d, str=%s, int=%d\n",
3679 entry.package->header->index,
3680 outValue->dataType,
3681 outValue->dataType == Res_value::TYPE_STRING
3682 ? String8(entry.package->header->values.stringAt(
3683 outValue->data, &len)).string()
3684 : "",
3685 outValue->data));
3686
3687 if (outSpecFlags != NULL) {
3688 *outSpecFlags = entry.specFlags;
3689 }
3690
3691 if (outConfig != NULL) {
3692 *outConfig = entry.config;
3693 }
3694
3695 return entry.package->header->index;
3696 }
3697
resolveReference(Res_value * value,ssize_t blockIndex,uint32_t * outLastRef,uint32_t * inoutTypeSpecFlags,ResTable_config * outConfig) const3698 ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3699 uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3700 ResTable_config* outConfig) const
3701 {
3702 int count=0;
3703 while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
3704 && value->data != 0 && count < 20) {
3705 if (outLastRef) *outLastRef = value->data;
3706 uint32_t lastRef = value->data;
3707 uint32_t newFlags = 0;
3708 const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3709 outConfig);
3710 if (newIndex == BAD_INDEX) {
3711 return BAD_INDEX;
3712 }
3713 TABLE_THEME(ALOGI("Resolving reference %p: newIndex=%d, type=0x%x, data=%p\n",
3714 (void*)lastRef, (int)newIndex, (int)value->dataType, (void*)value->data));
3715 //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3716 if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3717 if (newIndex < 0) {
3718 // This can fail if the resource being referenced is a style...
3719 // in this case, just return the reference, and expect the
3720 // caller to deal with.
3721 return blockIndex;
3722 }
3723 blockIndex = newIndex;
3724 count++;
3725 }
3726 return blockIndex;
3727 }
3728
valueToString(const Res_value * value,size_t stringBlock,char16_t[TMP_BUFFER_SIZE],size_t * outLen) const3729 const char16_t* ResTable::valueToString(
3730 const Res_value* value, size_t stringBlock,
3731 char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
3732 {
3733 if (!value) {
3734 return NULL;
3735 }
3736 if (value->dataType == value->TYPE_STRING) {
3737 return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
3738 }
3739 // XXX do int to string conversions.
3740 return NULL;
3741 }
3742
lockBag(uint32_t resID,const bag_entry ** outBag) const3743 ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
3744 {
3745 mLock.lock();
3746 ssize_t err = getBagLocked(resID, outBag);
3747 if (err < NO_ERROR) {
3748 //printf("*** get failed! unlocking\n");
3749 mLock.unlock();
3750 }
3751 return err;
3752 }
3753
unlockBag(const bag_entry *) const3754 void ResTable::unlockBag(const bag_entry* /*bag*/) const
3755 {
3756 //printf("<<< unlockBag %p\n", this);
3757 mLock.unlock();
3758 }
3759
lock() const3760 void ResTable::lock() const
3761 {
3762 mLock.lock();
3763 }
3764
unlock() const3765 void ResTable::unlock() const
3766 {
3767 mLock.unlock();
3768 }
3769
getBagLocked(uint32_t resID,const bag_entry ** outBag,uint32_t * outTypeSpecFlags) const3770 ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
3771 uint32_t* outTypeSpecFlags) const
3772 {
3773 if (mError != NO_ERROR) {
3774 return mError;
3775 }
3776
3777 const ssize_t p = getResourcePackageIndex(resID);
3778 const int t = Res_GETTYPE(resID);
3779 const int e = Res_GETENTRY(resID);
3780
3781 if (p < 0) {
3782 ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
3783 return BAD_INDEX;
3784 }
3785 if (t < 0) {
3786 ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
3787 return BAD_INDEX;
3788 }
3789
3790 //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
3791 PackageGroup* const grp = mPackageGroups[p];
3792 if (grp == NULL) {
3793 ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
3794 return BAD_INDEX;
3795 }
3796
3797 const TypeList& typeConfigs = grp->types[t];
3798 if (typeConfigs.isEmpty()) {
3799 ALOGW("Type identifier 0x%x does not exist.", t+1);
3800 return BAD_INDEX;
3801 }
3802
3803 const size_t NENTRY = typeConfigs[0]->entryCount;
3804 if (e >= (int)NENTRY) {
3805 ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
3806 e, (int)typeConfigs[0]->entryCount);
3807 return BAD_INDEX;
3808 }
3809
3810 // First see if we've already computed this bag...
3811 if (grp->bags) {
3812 bag_set** typeSet = grp->bags->get(t);
3813 if (typeSet) {
3814 bag_set* set = typeSet[e];
3815 if (set) {
3816 if (set != (bag_set*)0xFFFFFFFF) {
3817 if (outTypeSpecFlags != NULL) {
3818 *outTypeSpecFlags = set->typeSpecFlags;
3819 }
3820 *outBag = (bag_entry*)(set+1);
3821 //ALOGI("Found existing bag for: %p\n", (void*)resID);
3822 return set->numAttrs;
3823 }
3824 ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
3825 resID);
3826 return BAD_INDEX;
3827 }
3828 }
3829 }
3830
3831 // Bag not found, we need to compute it!
3832 if (!grp->bags) {
3833 grp->bags = new ByteBucketArray<bag_set**>();
3834 if (!grp->bags) return NO_MEMORY;
3835 }
3836
3837 bag_set** typeSet = grp->bags->get(t);
3838 if (!typeSet) {
3839 typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
3840 if (!typeSet) return NO_MEMORY;
3841 grp->bags->set(t, typeSet);
3842 }
3843
3844 // Mark that we are currently working on this one.
3845 typeSet[e] = (bag_set*)0xFFFFFFFF;
3846
3847 TABLE_NOISY(ALOGI("Building bag: %p\n", (void*)resID));
3848
3849 // Now collect all bag attributes
3850 Entry entry;
3851 status_t err = getEntry(grp, t, e, &mParams, &entry);
3852 if (err != NO_ERROR) {
3853 return err;
3854 }
3855
3856 const uint16_t entrySize = dtohs(entry.entry->size);
3857 const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
3858 ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
3859 const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
3860 ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
3861
3862 size_t N = count;
3863
3864 TABLE_NOISY(ALOGI("Found map: size=%p parent=%p count=%d\n",
3865 entrySize, parent, count));
3866
3867 // If this map inherits from another, we need to start
3868 // with its parent's values. Otherwise start out empty.
3869 TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
3870 entrySize, parent));
3871
3872 // This is what we are building.
3873 bag_set* set = NULL;
3874
3875 if (parent) {
3876 uint32_t resolvedParent = parent;
3877
3878 // Bags encode a parent reference without using the standard
3879 // Res_value structure. That means we must always try to
3880 // resolve a parent reference in case it is actually a
3881 // TYPE_DYNAMIC_REFERENCE.
3882 status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
3883 if (err != NO_ERROR) {
3884 ALOGE("Failed resolving bag parent id 0x%08x", parent);
3885 return UNKNOWN_ERROR;
3886 }
3887
3888 const bag_entry* parentBag;
3889 uint32_t parentTypeSpecFlags = 0;
3890 const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
3891 const size_t NT = ((NP >= 0) ? NP : 0) + N;
3892 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
3893 if (set == NULL) {
3894 return NO_MEMORY;
3895 }
3896 if (NP > 0) {
3897 memcpy(set+1, parentBag, NP*sizeof(bag_entry));
3898 set->numAttrs = NP;
3899 TABLE_NOISY(ALOGI("Initialized new bag with %d inherited attributes.\n", NP));
3900 } else {
3901 TABLE_NOISY(ALOGI("Initialized new bag with no inherited attributes.\n"));
3902 set->numAttrs = 0;
3903 }
3904 set->availAttrs = NT;
3905 set->typeSpecFlags = parentTypeSpecFlags;
3906 } else {
3907 set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
3908 if (set == NULL) {
3909 return NO_MEMORY;
3910 }
3911 set->numAttrs = 0;
3912 set->availAttrs = N;
3913 set->typeSpecFlags = 0;
3914 }
3915
3916 set->typeSpecFlags |= entry.specFlags;
3917
3918 // Now merge in the new attributes...
3919 size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
3920 + dtohs(entry.entry->size);
3921 const ResTable_map* map;
3922 bag_entry* entries = (bag_entry*)(set+1);
3923 size_t curEntry = 0;
3924 uint32_t pos = 0;
3925 TABLE_NOISY(ALOGI("Starting with set %p, entries=%p, avail=%d\n",
3926 set, entries, set->availAttrs));
3927 while (pos < count) {
3928 TABLE_NOISY(printf("Now at %p\n", (void*)curOff));
3929
3930 if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
3931 ALOGW("ResTable_map at %d is beyond type chunk data %d",
3932 (int)curOff, dtohl(entry.type->header.size));
3933 return BAD_TYPE;
3934 }
3935 map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
3936 N++;
3937
3938 uint32_t newName = htodl(map->name.ident);
3939 if (!Res_INTERNALID(newName)) {
3940 // Attributes don't have a resource id as the name. They specify
3941 // other data, which would be wrong to change via a lookup.
3942 if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
3943 ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
3944 (int) curOff, (int) newName);
3945 return UNKNOWN_ERROR;
3946 }
3947 }
3948
3949 bool isInside;
3950 uint32_t oldName = 0;
3951 while ((isInside=(curEntry < set->numAttrs))
3952 && (oldName=entries[curEntry].map.name.ident) < newName) {
3953 TABLE_NOISY(printf("#%d: Keeping existing attribute: 0x%08x\n",
3954 curEntry, entries[curEntry].map.name.ident));
3955 curEntry++;
3956 }
3957
3958 if ((!isInside) || oldName != newName) {
3959 // This is a new attribute... figure out what to do with it.
3960 if (set->numAttrs >= set->availAttrs) {
3961 // Need to alloc more memory...
3962 const size_t newAvail = set->availAttrs+N;
3963 set = (bag_set*)realloc(set,
3964 sizeof(bag_set)
3965 + sizeof(bag_entry)*newAvail);
3966 if (set == NULL) {
3967 return NO_MEMORY;
3968 }
3969 set->availAttrs = newAvail;
3970 entries = (bag_entry*)(set+1);
3971 TABLE_NOISY(printf("Reallocated set %p, entries=%p, avail=%d\n",
3972 set, entries, set->availAttrs));
3973 }
3974 if (isInside) {
3975 // Going in the middle, need to make space.
3976 memmove(entries+curEntry+1, entries+curEntry,
3977 sizeof(bag_entry)*(set->numAttrs-curEntry));
3978 set->numAttrs++;
3979 }
3980 TABLE_NOISY(printf("#%d: Inserting new attribute: 0x%08x\n",
3981 curEntry, newName));
3982 } else {
3983 TABLE_NOISY(printf("#%d: Replacing existing attribute: 0x%08x\n",
3984 curEntry, oldName));
3985 }
3986
3987 bag_entry* cur = entries+curEntry;
3988
3989 cur->stringBlock = entry.package->header->index;
3990 cur->map.name.ident = newName;
3991 cur->map.value.copyFrom_dtoh(map->value);
3992 status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
3993 if (err != NO_ERROR) {
3994 ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
3995 return UNKNOWN_ERROR;
3996 }
3997
3998 TABLE_NOISY(printf("Setting entry #%d %p: block=%d, name=0x%08x, type=%d, data=0x%08x\n",
3999 curEntry, cur, cur->stringBlock, cur->map.name.ident,
4000 cur->map.value.dataType, cur->map.value.data));
4001
4002 // On to the next!
4003 curEntry++;
4004 pos++;
4005 const size_t size = dtohs(map->value.size);
4006 curOff += size + sizeof(*map)-sizeof(map->value);
4007 };
4008
4009 if (curEntry > set->numAttrs) {
4010 set->numAttrs = curEntry;
4011 }
4012
4013 // And this is it...
4014 typeSet[e] = set;
4015 if (set) {
4016 if (outTypeSpecFlags != NULL) {
4017 *outTypeSpecFlags = set->typeSpecFlags;
4018 }
4019 *outBag = (bag_entry*)(set+1);
4020 TABLE_NOISY(ALOGI("Returning %d attrs\n", set->numAttrs));
4021 return set->numAttrs;
4022 }
4023 return BAD_INDEX;
4024 }
4025
setParameters(const ResTable_config * params)4026 void ResTable::setParameters(const ResTable_config* params)
4027 {
4028 mLock.lock();
4029 TABLE_GETENTRY(ALOGI("Setting parameters: %s\n", params->toString().string()));
4030 mParams = *params;
4031 for (size_t i=0; i<mPackageGroups.size(); i++) {
4032 TABLE_NOISY(ALOGI("CLEARING BAGS FOR GROUP %d!", i));
4033 mPackageGroups[i]->clearBagCache();
4034 }
4035 mLock.unlock();
4036 }
4037
getParameters(ResTable_config * params) const4038 void ResTable::getParameters(ResTable_config* params) const
4039 {
4040 mLock.lock();
4041 *params = mParams;
4042 mLock.unlock();
4043 }
4044
4045 struct id_name_map {
4046 uint32_t id;
4047 size_t len;
4048 char16_t name[6];
4049 };
4050
4051 const static id_name_map ID_NAMES[] = {
4052 { ResTable_map::ATTR_TYPE, 5, { '^', 't', 'y', 'p', 'e' } },
4053 { ResTable_map::ATTR_L10N, 5, { '^', 'l', '1', '0', 'n' } },
4054 { ResTable_map::ATTR_MIN, 4, { '^', 'm', 'i', 'n' } },
4055 { ResTable_map::ATTR_MAX, 4, { '^', 'm', 'a', 'x' } },
4056 { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4057 { ResTable_map::ATTR_ZERO, 5, { '^', 'z', 'e', 'r', 'o' } },
4058 { ResTable_map::ATTR_ONE, 4, { '^', 'o', 'n', 'e' } },
4059 { ResTable_map::ATTR_TWO, 4, { '^', 't', 'w', 'o' } },
4060 { ResTable_map::ATTR_FEW, 4, { '^', 'f', 'e', 'w' } },
4061 { ResTable_map::ATTR_MANY, 5, { '^', 'm', 'a', 'n', 'y' } },
4062 };
4063
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) const4064 uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4065 const char16_t* type, size_t typeLen,
4066 const char16_t* package,
4067 size_t packageLen,
4068 uint32_t* outTypeSpecFlags) const
4069 {
4070 TABLE_SUPER_NOISY(printf("Identifier for name: error=%d\n", mError));
4071
4072 // Check for internal resource identifier as the very first thing, so
4073 // that we will always find them even when there are no resources.
4074 if (name[0] == '^') {
4075 const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4076 size_t len;
4077 for (int i=0; i<N; i++) {
4078 const id_name_map* m = ID_NAMES + i;
4079 len = m->len;
4080 if (len != nameLen) {
4081 continue;
4082 }
4083 for (size_t j=1; j<len; j++) {
4084 if (m->name[j] != name[j]) {
4085 goto nope;
4086 }
4087 }
4088 if (outTypeSpecFlags) {
4089 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4090 }
4091 return m->id;
4092 nope:
4093 ;
4094 }
4095 if (nameLen > 7) {
4096 if (name[1] == 'i' && name[2] == 'n'
4097 && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4098 && name[6] == '_') {
4099 int index = atoi(String8(name + 7, nameLen - 7).string());
4100 if (Res_CHECKID(index)) {
4101 ALOGW("Array resource index: %d is too large.",
4102 index);
4103 return 0;
4104 }
4105 if (outTypeSpecFlags) {
4106 *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4107 }
4108 return Res_MAKEARRAY(index);
4109 }
4110 }
4111 return 0;
4112 }
4113
4114 if (mError != NO_ERROR) {
4115 return 0;
4116 }
4117
4118 bool fakePublic = false;
4119
4120 // Figure out the package and type we are looking in...
4121
4122 const char16_t* packageEnd = NULL;
4123 const char16_t* typeEnd = NULL;
4124 const char16_t* const nameEnd = name+nameLen;
4125 const char16_t* p = name;
4126 while (p < nameEnd) {
4127 if (*p == ':') packageEnd = p;
4128 else if (*p == '/') typeEnd = p;
4129 p++;
4130 }
4131 if (*name == '@') {
4132 name++;
4133 if (*name == '*') {
4134 fakePublic = true;
4135 name++;
4136 }
4137 }
4138 if (name >= nameEnd) {
4139 return 0;
4140 }
4141
4142 if (packageEnd) {
4143 package = name;
4144 packageLen = packageEnd-name;
4145 name = packageEnd+1;
4146 } else if (!package) {
4147 return 0;
4148 }
4149
4150 if (typeEnd) {
4151 type = name;
4152 typeLen = typeEnd-name;
4153 name = typeEnd+1;
4154 } else if (!type) {
4155 return 0;
4156 }
4157
4158 if (name >= nameEnd) {
4159 return 0;
4160 }
4161 nameLen = nameEnd-name;
4162
4163 TABLE_NOISY(printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4164 String8(type, typeLen).string(),
4165 String8(name, nameLen).string(),
4166 String8(package, packageLen).string()));
4167
4168 const size_t NG = mPackageGroups.size();
4169 for (size_t ig=0; ig<NG; ig++) {
4170 const PackageGroup* group = mPackageGroups[ig];
4171
4172 if (strzcmp16(package, packageLen,
4173 group->name.string(), group->name.size())) {
4174 TABLE_NOISY(printf("Skipping package group: %s\n", String8(group->name).string()));
4175 continue;
4176 }
4177
4178 const size_t packageCount = group->packages.size();
4179 for (size_t pi = 0; pi < packageCount; pi++) {
4180 ssize_t ti = group->packages[pi]->typeStrings.indexOfString(type, typeLen);
4181 if (ti < 0) {
4182 continue;
4183 }
4184
4185 ti += group->packages[pi]->typeIdOffset;
4186
4187 const TypeList& typeList = group->types[ti];
4188 if (typeList.isEmpty()) {
4189 TABLE_NOISY(printf("Expected type structure not found in package %s for index %d\n",
4190 String8(group->name).string(), ti));
4191 continue;
4192 }
4193
4194 const size_t typeCount = typeList.size();
4195 for (size_t i = 0; i < typeCount; i++) {
4196 const Type* t = typeList[i];
4197 const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4198 if (ei < 0) {
4199 continue;
4200 }
4201
4202 const size_t configCount = t->configs.size();
4203 for (size_t j = 0; j < configCount; j++) {
4204 const TypeVariant tv(t->configs[j]);
4205 for (TypeVariant::iterator iter = tv.beginEntries();
4206 iter != tv.endEntries();
4207 iter++) {
4208 const ResTable_entry* entry = *iter;
4209 if (entry == NULL) {
4210 continue;
4211 }
4212
4213 if (dtohl(entry->key.index) == (size_t) ei) {
4214 uint32_t resId = Res_MAKEID(group->id - 1, ti, iter.index());
4215 if (outTypeSpecFlags) {
4216 Entry result;
4217 if (getEntry(group, ti, iter.index(), NULL, &result) != NO_ERROR) {
4218 ALOGW("Failed to find spec flags for %s:%s/%s (0x%08x)",
4219 String8(group->name).string(),
4220 String8(String16(type, typeLen)).string(),
4221 String8(String16(name, nameLen)).string(),
4222 resId);
4223 return 0;
4224 }
4225 *outTypeSpecFlags = result.specFlags;
4226
4227 if (fakePublic) {
4228 *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4229 }
4230 }
4231 return resId;
4232 }
4233 }
4234 }
4235 }
4236 }
4237 break;
4238 }
4239 return 0;
4240 }
4241
expandResourceRef(const uint16_t * refStr,size_t refLen,String16 * outPackage,String16 * outType,String16 * outName,const String16 * defType,const String16 * defPackage,const char ** outErrorMsg,bool * outPublicOnly)4242 bool ResTable::expandResourceRef(const uint16_t* refStr, size_t refLen,
4243 String16* outPackage,
4244 String16* outType,
4245 String16* outName,
4246 const String16* defType,
4247 const String16* defPackage,
4248 const char** outErrorMsg,
4249 bool* outPublicOnly)
4250 {
4251 const char16_t* packageEnd = NULL;
4252 const char16_t* typeEnd = NULL;
4253 const char16_t* p = refStr;
4254 const char16_t* const end = p + refLen;
4255 while (p < end) {
4256 if (*p == ':') packageEnd = p;
4257 else if (*p == '/') {
4258 typeEnd = p;
4259 break;
4260 }
4261 p++;
4262 }
4263 p = refStr;
4264 if (*p == '@') p++;
4265
4266 if (outPublicOnly != NULL) {
4267 *outPublicOnly = true;
4268 }
4269 if (*p == '*') {
4270 p++;
4271 if (outPublicOnly != NULL) {
4272 *outPublicOnly = false;
4273 }
4274 }
4275
4276 if (packageEnd) {
4277 *outPackage = String16(p, packageEnd-p);
4278 p = packageEnd+1;
4279 } else {
4280 if (!defPackage) {
4281 if (outErrorMsg) {
4282 *outErrorMsg = "No resource package specified";
4283 }
4284 return false;
4285 }
4286 *outPackage = *defPackage;
4287 }
4288 if (typeEnd) {
4289 *outType = String16(p, typeEnd-p);
4290 p = typeEnd+1;
4291 } else {
4292 if (!defType) {
4293 if (outErrorMsg) {
4294 *outErrorMsg = "No resource type specified";
4295 }
4296 return false;
4297 }
4298 *outType = *defType;
4299 }
4300 *outName = String16(p, end-p);
4301 if(**outPackage == 0) {
4302 if(outErrorMsg) {
4303 *outErrorMsg = "Resource package cannot be an empty string";
4304 }
4305 return false;
4306 }
4307 if(**outType == 0) {
4308 if(outErrorMsg) {
4309 *outErrorMsg = "Resource type cannot be an empty string";
4310 }
4311 return false;
4312 }
4313 if(**outName == 0) {
4314 if(outErrorMsg) {
4315 *outErrorMsg = "Resource id cannot be an empty string";
4316 }
4317 return false;
4318 }
4319 return true;
4320 }
4321
get_hex(char c,bool * outError)4322 static uint32_t get_hex(char c, bool* outError)
4323 {
4324 if (c >= '0' && c <= '9') {
4325 return c - '0';
4326 } else if (c >= 'a' && c <= 'f') {
4327 return c - 'a' + 0xa;
4328 } else if (c >= 'A' && c <= 'F') {
4329 return c - 'A' + 0xa;
4330 }
4331 *outError = true;
4332 return 0;
4333 }
4334
4335 struct unit_entry
4336 {
4337 const char* name;
4338 size_t len;
4339 uint8_t type;
4340 uint32_t unit;
4341 float scale;
4342 };
4343
4344 static const unit_entry unitNames[] = {
4345 { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
4346 { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4347 { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4348 { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
4349 { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
4350 { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
4351 { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
4352 { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
4353 { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
4354 { NULL, 0, 0, 0, 0 }
4355 };
4356
parse_unit(const char * str,Res_value * outValue,float * outScale,const char ** outEnd)4357 static bool parse_unit(const char* str, Res_value* outValue,
4358 float* outScale, const char** outEnd)
4359 {
4360 const char* end = str;
4361 while (*end != 0 && !isspace((unsigned char)*end)) {
4362 end++;
4363 }
4364 const size_t len = end-str;
4365
4366 const char* realEnd = end;
4367 while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
4368 realEnd++;
4369 }
4370 if (*realEnd != 0) {
4371 return false;
4372 }
4373
4374 const unit_entry* cur = unitNames;
4375 while (cur->name) {
4376 if (len == cur->len && strncmp(cur->name, str, len) == 0) {
4377 outValue->dataType = cur->type;
4378 outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
4379 *outScale = cur->scale;
4380 *outEnd = end;
4381 //printf("Found unit %s for %s\n", cur->name, str);
4382 return true;
4383 }
4384 cur++;
4385 }
4386
4387 return false;
4388 }
4389
4390
stringToInt(const char16_t * s,size_t len,Res_value * outValue)4391 bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
4392 {
4393 while (len > 0 && isspace16(*s)) {
4394 s++;
4395 len--;
4396 }
4397
4398 if (len <= 0) {
4399 return false;
4400 }
4401
4402 size_t i = 0;
4403 int32_t val = 0;
4404 bool neg = false;
4405
4406 if (*s == '-') {
4407 neg = true;
4408 i++;
4409 }
4410
4411 if (s[i] < '0' || s[i] > '9') {
4412 return false;
4413 }
4414
4415 // Decimal or hex?
4416 if (s[i] == '0' && s[i+1] == 'x') {
4417 if (outValue)
4418 outValue->dataType = outValue->TYPE_INT_HEX;
4419 i += 2;
4420 bool error = false;
4421 while (i < len && !error) {
4422 val = (val*16) + get_hex(s[i], &error);
4423 i++;
4424 }
4425 if (error) {
4426 return false;
4427 }
4428 } else {
4429 if (outValue)
4430 outValue->dataType = outValue->TYPE_INT_DEC;
4431 while (i < len) {
4432 if (s[i] < '0' || s[i] > '9') {
4433 return false;
4434 }
4435 val = (val*10) + s[i]-'0';
4436 i++;
4437 }
4438 }
4439
4440 if (neg) val = -val;
4441
4442 while (i < len && isspace16(s[i])) {
4443 i++;
4444 }
4445
4446 if (i == len) {
4447 if (outValue)
4448 outValue->data = val;
4449 return true;
4450 }
4451
4452 return false;
4453 }
4454
stringToFloat(const char16_t * s,size_t len,Res_value * outValue)4455 bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
4456 {
4457 while (len > 0 && isspace16(*s)) {
4458 s++;
4459 len--;
4460 }
4461
4462 if (len <= 0) {
4463 return false;
4464 }
4465
4466 char buf[128];
4467 int i=0;
4468 while (len > 0 && *s != 0 && i < 126) {
4469 if (*s > 255) {
4470 return false;
4471 }
4472 buf[i++] = *s++;
4473 len--;
4474 }
4475
4476 if (len > 0) {
4477 return false;
4478 }
4479 if (buf[0] < '0' && buf[0] > '9' && buf[0] != '.') {
4480 return false;
4481 }
4482
4483 buf[i] = 0;
4484 const char* end;
4485 float f = strtof(buf, (char**)&end);
4486
4487 if (*end != 0 && !isspace((unsigned char)*end)) {
4488 // Might be a unit...
4489 float scale;
4490 if (parse_unit(end, outValue, &scale, &end)) {
4491 f *= scale;
4492 const bool neg = f < 0;
4493 if (neg) f = -f;
4494 uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4495 uint32_t radix;
4496 uint32_t shift;
4497 if ((bits&0x7fffff) == 0) {
4498 // Always use 23p0 if there is no fraction, just to make
4499 // things easier to read.
4500 radix = Res_value::COMPLEX_RADIX_23p0;
4501 shift = 23;
4502 } else if ((bits&0xffffffffff800000LL) == 0) {
4503 // Magnitude is zero -- can fit in 0 bits of precision.
4504 radix = Res_value::COMPLEX_RADIX_0p23;
4505 shift = 0;
4506 } else if ((bits&0xffffffff80000000LL) == 0) {
4507 // Magnitude can fit in 8 bits of precision.
4508 radix = Res_value::COMPLEX_RADIX_8p15;
4509 shift = 8;
4510 } else if ((bits&0xffffff8000000000LL) == 0) {
4511 // Magnitude can fit in 16 bits of precision.
4512 radix = Res_value::COMPLEX_RADIX_16p7;
4513 shift = 16;
4514 } else {
4515 // Magnitude needs entire range, so no fractional part.
4516 radix = Res_value::COMPLEX_RADIX_23p0;
4517 shift = 23;
4518 }
4519 int32_t mantissa = (int32_t)(
4520 (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
4521 if (neg) {
4522 mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
4523 }
4524 outValue->data |=
4525 (radix<<Res_value::COMPLEX_RADIX_SHIFT)
4526 | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
4527 //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
4528 // f * (neg ? -1 : 1), bits, f*(1<<23),
4529 // radix, shift, outValue->data);
4530 return true;
4531 }
4532 return false;
4533 }
4534
4535 while (*end != 0 && isspace((unsigned char)*end)) {
4536 end++;
4537 }
4538
4539 if (*end == 0) {
4540 if (outValue) {
4541 outValue->dataType = outValue->TYPE_FLOAT;
4542 *(float*)(&outValue->data) = f;
4543 return true;
4544 }
4545 }
4546
4547 return false;
4548 }
4549
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) const4550 bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4551 const char16_t* s, size_t len,
4552 bool preserveSpaces, bool coerceType,
4553 uint32_t attrID,
4554 const String16* defType,
4555 const String16* defPackage,
4556 Accessor* accessor,
4557 void* accessorCookie,
4558 uint32_t attrType,
4559 bool enforcePrivate) const
4560 {
4561 bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4562 const char* errorMsg = NULL;
4563
4564 outValue->size = sizeof(Res_value);
4565 outValue->res0 = 0;
4566
4567 // First strip leading/trailing whitespace. Do this before handling
4568 // escapes, so they can be used to force whitespace into the string.
4569 if (!preserveSpaces) {
4570 while (len > 0 && isspace16(*s)) {
4571 s++;
4572 len--;
4573 }
4574 while (len > 0 && isspace16(s[len-1])) {
4575 len--;
4576 }
4577 // If the string ends with '\', then we keep the space after it.
4578 if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4579 len++;
4580 }
4581 }
4582
4583 //printf("Value for: %s\n", String8(s, len).string());
4584
4585 uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4586 uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4587 bool fromAccessor = false;
4588 if (attrID != 0 && !Res_INTERNALID(attrID)) {
4589 const ssize_t p = getResourcePackageIndex(attrID);
4590 const bag_entry* bag;
4591 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4592 //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4593 if (cnt >= 0) {
4594 while (cnt > 0) {
4595 //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4596 switch (bag->map.name.ident) {
4597 case ResTable_map::ATTR_TYPE:
4598 attrType = bag->map.value.data;
4599 break;
4600 case ResTable_map::ATTR_MIN:
4601 attrMin = bag->map.value.data;
4602 break;
4603 case ResTable_map::ATTR_MAX:
4604 attrMax = bag->map.value.data;
4605 break;
4606 case ResTable_map::ATTR_L10N:
4607 l10nReq = bag->map.value.data;
4608 break;
4609 }
4610 bag++;
4611 cnt--;
4612 }
4613 unlockBag(bag);
4614 } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4615 fromAccessor = true;
4616 if (attrType == ResTable_map::TYPE_ENUM
4617 || attrType == ResTable_map::TYPE_FLAGS
4618 || attrType == ResTable_map::TYPE_INTEGER) {
4619 accessor->getAttributeMin(attrID, &attrMin);
4620 accessor->getAttributeMax(attrID, &attrMax);
4621 }
4622 if (localizationSetting) {
4623 l10nReq = accessor->getAttributeL10N(attrID);
4624 }
4625 }
4626 }
4627
4628 const bool canStringCoerce =
4629 coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4630
4631 if (*s == '@') {
4632 outValue->dataType = outValue->TYPE_REFERENCE;
4633
4634 // Note: we don't check attrType here because the reference can
4635 // be to any other type; we just need to count on the client making
4636 // sure the referenced type is correct.
4637
4638 //printf("Looking up ref: %s\n", String8(s, len).string());
4639
4640 // It's a reference!
4641 if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4642 outValue->data = 0;
4643 return true;
4644 } else {
4645 bool createIfNotFound = false;
4646 const char16_t* resourceRefName;
4647 int resourceNameLen;
4648 if (len > 2 && s[1] == '+') {
4649 createIfNotFound = true;
4650 resourceRefName = s + 2;
4651 resourceNameLen = len - 2;
4652 } else if (len > 2 && s[1] == '*') {
4653 enforcePrivate = false;
4654 resourceRefName = s + 2;
4655 resourceNameLen = len - 2;
4656 } else {
4657 createIfNotFound = false;
4658 resourceRefName = s + 1;
4659 resourceNameLen = len - 1;
4660 }
4661 String16 package, type, name;
4662 if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
4663 defType, defPackage, &errorMsg)) {
4664 if (accessor != NULL) {
4665 accessor->reportError(accessorCookie, errorMsg);
4666 }
4667 return false;
4668 }
4669
4670 uint32_t specFlags = 0;
4671 uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
4672 type.size(), package.string(), package.size(), &specFlags);
4673 if (rid != 0) {
4674 if (enforcePrivate) {
4675 if (accessor == NULL || accessor->getAssetsPackage() != package) {
4676 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4677 if (accessor != NULL) {
4678 accessor->reportError(accessorCookie, "Resource is not public.");
4679 }
4680 return false;
4681 }
4682 }
4683 }
4684
4685 if (accessor) {
4686 rid = Res_MAKEID(
4687 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4688 Res_GETTYPE(rid), Res_GETENTRY(rid));
4689 TABLE_NOISY(printf("Incl %s:%s/%s: 0x%08x\n",
4690 String8(package).string(), String8(type).string(),
4691 String8(name).string(), rid));
4692 }
4693
4694 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4695 if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
4696 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4697 }
4698 outValue->data = rid;
4699 return true;
4700 }
4701
4702 if (accessor) {
4703 uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
4704 createIfNotFound);
4705 if (rid != 0) {
4706 TABLE_NOISY(printf("Pckg %s:%s/%s: 0x%08x\n",
4707 String8(package).string(), String8(type).string(),
4708 String8(name).string(), rid));
4709 uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4710 if (packageId == 0x00) {
4711 outValue->data = rid;
4712 outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4713 return true;
4714 } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
4715 // We accept packageId's generated as 0x01 in order to support
4716 // building the android system resources
4717 outValue->data = rid;
4718 return true;
4719 }
4720 }
4721 }
4722 }
4723
4724 if (accessor != NULL) {
4725 accessor->reportError(accessorCookie, "No resource found that matches the given name");
4726 }
4727 return false;
4728 }
4729
4730 // if we got to here, and localization is required and it's not a reference,
4731 // complain and bail.
4732 if (l10nReq == ResTable_map::L10N_SUGGESTED) {
4733 if (localizationSetting) {
4734 if (accessor != NULL) {
4735 accessor->reportError(accessorCookie, "This attribute must be localized.");
4736 }
4737 }
4738 }
4739
4740 if (*s == '#') {
4741 // It's a color! Convert to an integer of the form 0xaarrggbb.
4742 uint32_t color = 0;
4743 bool error = false;
4744 if (len == 4) {
4745 outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
4746 color |= 0xFF000000;
4747 color |= get_hex(s[1], &error) << 20;
4748 color |= get_hex(s[1], &error) << 16;
4749 color |= get_hex(s[2], &error) << 12;
4750 color |= get_hex(s[2], &error) << 8;
4751 color |= get_hex(s[3], &error) << 4;
4752 color |= get_hex(s[3], &error);
4753 } else if (len == 5) {
4754 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
4755 color |= get_hex(s[1], &error) << 28;
4756 color |= get_hex(s[1], &error) << 24;
4757 color |= get_hex(s[2], &error) << 20;
4758 color |= get_hex(s[2], &error) << 16;
4759 color |= get_hex(s[3], &error) << 12;
4760 color |= get_hex(s[3], &error) << 8;
4761 color |= get_hex(s[4], &error) << 4;
4762 color |= get_hex(s[4], &error);
4763 } else if (len == 7) {
4764 outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
4765 color |= 0xFF000000;
4766 color |= get_hex(s[1], &error) << 20;
4767 color |= get_hex(s[2], &error) << 16;
4768 color |= get_hex(s[3], &error) << 12;
4769 color |= get_hex(s[4], &error) << 8;
4770 color |= get_hex(s[5], &error) << 4;
4771 color |= get_hex(s[6], &error);
4772 } else if (len == 9) {
4773 outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
4774 color |= get_hex(s[1], &error) << 28;
4775 color |= get_hex(s[2], &error) << 24;
4776 color |= get_hex(s[3], &error) << 20;
4777 color |= get_hex(s[4], &error) << 16;
4778 color |= get_hex(s[5], &error) << 12;
4779 color |= get_hex(s[6], &error) << 8;
4780 color |= get_hex(s[7], &error) << 4;
4781 color |= get_hex(s[8], &error);
4782 } else {
4783 error = true;
4784 }
4785 if (!error) {
4786 if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
4787 if (!canStringCoerce) {
4788 if (accessor != NULL) {
4789 accessor->reportError(accessorCookie,
4790 "Color types not allowed");
4791 }
4792 return false;
4793 }
4794 } else {
4795 outValue->data = color;
4796 //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
4797 return true;
4798 }
4799 } else {
4800 if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
4801 if (accessor != NULL) {
4802 accessor->reportError(accessorCookie, "Color value not valid --"
4803 " must be #rgb, #argb, #rrggbb, or #aarrggbb");
4804 }
4805 #if 0
4806 fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
4807 "Resource File", //(const char*)in->getPrintableSource(),
4808 String8(*curTag).string(),
4809 String8(s, len).string());
4810 #endif
4811 return false;
4812 }
4813 }
4814 }
4815
4816 if (*s == '?') {
4817 outValue->dataType = outValue->TYPE_ATTRIBUTE;
4818
4819 // Note: we don't check attrType here because the reference can
4820 // be to any other type; we just need to count on the client making
4821 // sure the referenced type is correct.
4822
4823 //printf("Looking up attr: %s\n", String8(s, len).string());
4824
4825 static const String16 attr16("attr");
4826 String16 package, type, name;
4827 if (!expandResourceRef(s+1, len-1, &package, &type, &name,
4828 &attr16, defPackage, &errorMsg)) {
4829 if (accessor != NULL) {
4830 accessor->reportError(accessorCookie, errorMsg);
4831 }
4832 return false;
4833 }
4834
4835 //printf("Pkg: %s, Type: %s, Name: %s\n",
4836 // String8(package).string(), String8(type).string(),
4837 // String8(name).string());
4838 uint32_t specFlags = 0;
4839 uint32_t rid =
4840 identifierForName(name.string(), name.size(),
4841 type.string(), type.size(),
4842 package.string(), package.size(), &specFlags);
4843 if (rid != 0) {
4844 if (enforcePrivate) {
4845 if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4846 if (accessor != NULL) {
4847 accessor->reportError(accessorCookie, "Attribute is not public.");
4848 }
4849 return false;
4850 }
4851 }
4852 if (!accessor) {
4853 outValue->data = rid;
4854 return true;
4855 }
4856 rid = Res_MAKEID(
4857 accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4858 Res_GETTYPE(rid), Res_GETENTRY(rid));
4859 //printf("Incl %s:%s/%s: 0x%08x\n",
4860 // String8(package).string(), String8(type).string(),
4861 // String8(name).string(), rid);
4862 outValue->data = rid;
4863 return true;
4864 }
4865
4866 if (accessor) {
4867 uint32_t rid = accessor->getCustomResource(package, type, name);
4868 if (rid != 0) {
4869 //printf("Mine %s:%s/%s: 0x%08x\n",
4870 // String8(package).string(), String8(type).string(),
4871 // String8(name).string(), rid);
4872 outValue->data = rid;
4873 return true;
4874 }
4875 }
4876
4877 if (accessor != NULL) {
4878 accessor->reportError(accessorCookie, "No resource found that matches the given name");
4879 }
4880 return false;
4881 }
4882
4883 if (stringToInt(s, len, outValue)) {
4884 if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
4885 // If this type does not allow integers, but does allow floats,
4886 // fall through on this error case because the float type should
4887 // be able to accept any integer value.
4888 if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
4889 if (accessor != NULL) {
4890 accessor->reportError(accessorCookie, "Integer types not allowed");
4891 }
4892 return false;
4893 }
4894 } else {
4895 if (((int32_t)outValue->data) < ((int32_t)attrMin)
4896 || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
4897 if (accessor != NULL) {
4898 accessor->reportError(accessorCookie, "Integer value out of range");
4899 }
4900 return false;
4901 }
4902 return true;
4903 }
4904 }
4905
4906 if (stringToFloat(s, len, outValue)) {
4907 if (outValue->dataType == Res_value::TYPE_DIMENSION) {
4908 if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
4909 return true;
4910 }
4911 if (!canStringCoerce) {
4912 if (accessor != NULL) {
4913 accessor->reportError(accessorCookie, "Dimension types not allowed");
4914 }
4915 return false;
4916 }
4917 } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
4918 if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
4919 return true;
4920 }
4921 if (!canStringCoerce) {
4922 if (accessor != NULL) {
4923 accessor->reportError(accessorCookie, "Fraction types not allowed");
4924 }
4925 return false;
4926 }
4927 } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
4928 if (!canStringCoerce) {
4929 if (accessor != NULL) {
4930 accessor->reportError(accessorCookie, "Float types not allowed");
4931 }
4932 return false;
4933 }
4934 } else {
4935 return true;
4936 }
4937 }
4938
4939 if (len == 4) {
4940 if ((s[0] == 't' || s[0] == 'T') &&
4941 (s[1] == 'r' || s[1] == 'R') &&
4942 (s[2] == 'u' || s[2] == 'U') &&
4943 (s[3] == 'e' || s[3] == 'E')) {
4944 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4945 if (!canStringCoerce) {
4946 if (accessor != NULL) {
4947 accessor->reportError(accessorCookie, "Boolean types not allowed");
4948 }
4949 return false;
4950 }
4951 } else {
4952 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4953 outValue->data = (uint32_t)-1;
4954 return true;
4955 }
4956 }
4957 }
4958
4959 if (len == 5) {
4960 if ((s[0] == 'f' || s[0] == 'F') &&
4961 (s[1] == 'a' || s[1] == 'A') &&
4962 (s[2] == 'l' || s[2] == 'L') &&
4963 (s[3] == 's' || s[3] == 'S') &&
4964 (s[4] == 'e' || s[4] == 'E')) {
4965 if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4966 if (!canStringCoerce) {
4967 if (accessor != NULL) {
4968 accessor->reportError(accessorCookie, "Boolean types not allowed");
4969 }
4970 return false;
4971 }
4972 } else {
4973 outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4974 outValue->data = 0;
4975 return true;
4976 }
4977 }
4978 }
4979
4980 if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
4981 const ssize_t p = getResourcePackageIndex(attrID);
4982 const bag_entry* bag;
4983 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4984 //printf("Got %d for enum\n", cnt);
4985 if (cnt >= 0) {
4986 resource_name rname;
4987 while (cnt > 0) {
4988 if (!Res_INTERNALID(bag->map.name.ident)) {
4989 //printf("Trying attr #%08x\n", bag->map.name.ident);
4990 if (getResourceName(bag->map.name.ident, false, &rname)) {
4991 #if 0
4992 printf("Matching %s against %s (0x%08x)\n",
4993 String8(s, len).string(),
4994 String8(rname.name, rname.nameLen).string(),
4995 bag->map.name.ident);
4996 #endif
4997 if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
4998 outValue->dataType = bag->map.value.dataType;
4999 outValue->data = bag->map.value.data;
5000 unlockBag(bag);
5001 return true;
5002 }
5003 }
5004
5005 }
5006 bag++;
5007 cnt--;
5008 }
5009 unlockBag(bag);
5010 }
5011
5012 if (fromAccessor) {
5013 if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5014 return true;
5015 }
5016 }
5017 }
5018
5019 if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5020 const ssize_t p = getResourcePackageIndex(attrID);
5021 const bag_entry* bag;
5022 ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5023 //printf("Got %d for flags\n", cnt);
5024 if (cnt >= 0) {
5025 bool failed = false;
5026 resource_name rname;
5027 outValue->dataType = Res_value::TYPE_INT_HEX;
5028 outValue->data = 0;
5029 const char16_t* end = s + len;
5030 const char16_t* pos = s;
5031 while (pos < end && !failed) {
5032 const char16_t* start = pos;
5033 pos++;
5034 while (pos < end && *pos != '|') {
5035 pos++;
5036 }
5037 //printf("Looking for: %s\n", String8(start, pos-start).string());
5038 const bag_entry* bagi = bag;
5039 ssize_t i;
5040 for (i=0; i<cnt; i++, bagi++) {
5041 if (!Res_INTERNALID(bagi->map.name.ident)) {
5042 //printf("Trying attr #%08x\n", bagi->map.name.ident);
5043 if (getResourceName(bagi->map.name.ident, false, &rname)) {
5044 #if 0
5045 printf("Matching %s against %s (0x%08x)\n",
5046 String8(start,pos-start).string(),
5047 String8(rname.name, rname.nameLen).string(),
5048 bagi->map.name.ident);
5049 #endif
5050 if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5051 outValue->data |= bagi->map.value.data;
5052 break;
5053 }
5054 }
5055 }
5056 }
5057 if (i >= cnt) {
5058 // Didn't find this flag identifier.
5059 failed = true;
5060 }
5061 if (pos < end) {
5062 pos++;
5063 }
5064 }
5065 unlockBag(bag);
5066 if (!failed) {
5067 //printf("Final flag value: 0x%lx\n", outValue->data);
5068 return true;
5069 }
5070 }
5071
5072
5073 if (fromAccessor) {
5074 if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5075 //printf("Final flag value: 0x%lx\n", outValue->data);
5076 return true;
5077 }
5078 }
5079 }
5080
5081 if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5082 if (accessor != NULL) {
5083 accessor->reportError(accessorCookie, "String types not allowed");
5084 }
5085 return false;
5086 }
5087
5088 // Generic string handling...
5089 outValue->dataType = outValue->TYPE_STRING;
5090 if (outString) {
5091 bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5092 if (accessor != NULL) {
5093 accessor->reportError(accessorCookie, errorMsg);
5094 }
5095 return failed;
5096 }
5097
5098 return true;
5099 }
5100
collectString(String16 * outString,const char16_t * s,size_t len,bool preserveSpaces,const char ** outErrorMsg,bool append)5101 bool ResTable::collectString(String16* outString,
5102 const char16_t* s, size_t len,
5103 bool preserveSpaces,
5104 const char** outErrorMsg,
5105 bool append)
5106 {
5107 String16 tmp;
5108
5109 char quoted = 0;
5110 const char16_t* p = s;
5111 while (p < (s+len)) {
5112 while (p < (s+len)) {
5113 const char16_t c = *p;
5114 if (c == '\\') {
5115 break;
5116 }
5117 if (!preserveSpaces) {
5118 if (quoted == 0 && isspace16(c)
5119 && (c != ' ' || isspace16(*(p+1)))) {
5120 break;
5121 }
5122 if (c == '"' && (quoted == 0 || quoted == '"')) {
5123 break;
5124 }
5125 if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5126 /*
5127 * In practice, when people write ' instead of \'
5128 * in a string, they are doing it by accident
5129 * instead of really meaning to use ' as a quoting
5130 * character. Warn them so they don't lose it.
5131 */
5132 if (outErrorMsg) {
5133 *outErrorMsg = "Apostrophe not preceded by \\";
5134 }
5135 return false;
5136 }
5137 }
5138 p++;
5139 }
5140 if (p < (s+len)) {
5141 if (p > s) {
5142 tmp.append(String16(s, p-s));
5143 }
5144 if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5145 if (quoted == 0) {
5146 quoted = *p;
5147 } else {
5148 quoted = 0;
5149 }
5150 p++;
5151 } else if (!preserveSpaces && isspace16(*p)) {
5152 // Space outside of a quote -- consume all spaces and
5153 // leave a single plain space char.
5154 tmp.append(String16(" "));
5155 p++;
5156 while (p < (s+len) && isspace16(*p)) {
5157 p++;
5158 }
5159 } else if (*p == '\\') {
5160 p++;
5161 if (p < (s+len)) {
5162 switch (*p) {
5163 case 't':
5164 tmp.append(String16("\t"));
5165 break;
5166 case 'n':
5167 tmp.append(String16("\n"));
5168 break;
5169 case '#':
5170 tmp.append(String16("#"));
5171 break;
5172 case '@':
5173 tmp.append(String16("@"));
5174 break;
5175 case '?':
5176 tmp.append(String16("?"));
5177 break;
5178 case '"':
5179 tmp.append(String16("\""));
5180 break;
5181 case '\'':
5182 tmp.append(String16("'"));
5183 break;
5184 case '\\':
5185 tmp.append(String16("\\"));
5186 break;
5187 case 'u':
5188 {
5189 char16_t chr = 0;
5190 int i = 0;
5191 while (i < 4 && p[1] != 0) {
5192 p++;
5193 i++;
5194 int c;
5195 if (*p >= '0' && *p <= '9') {
5196 c = *p - '0';
5197 } else if (*p >= 'a' && *p <= 'f') {
5198 c = *p - 'a' + 10;
5199 } else if (*p >= 'A' && *p <= 'F') {
5200 c = *p - 'A' + 10;
5201 } else {
5202 if (outErrorMsg) {
5203 *outErrorMsg = "Bad character in \\u unicode escape sequence";
5204 }
5205 return false;
5206 }
5207 chr = (chr<<4) | c;
5208 }
5209 tmp.append(String16(&chr, 1));
5210 } break;
5211 default:
5212 // ignore unknown escape chars.
5213 break;
5214 }
5215 p++;
5216 }
5217 }
5218 len -= (p-s);
5219 s = p;
5220 }
5221 }
5222
5223 if (tmp.size() != 0) {
5224 if (len > 0) {
5225 tmp.append(String16(s, len));
5226 }
5227 if (append) {
5228 outString->append(tmp);
5229 } else {
5230 outString->setTo(tmp);
5231 }
5232 } else {
5233 if (append) {
5234 outString->append(String16(s, len));
5235 } else {
5236 outString->setTo(s, len);
5237 }
5238 }
5239
5240 return true;
5241 }
5242
getBasePackageCount() const5243 size_t ResTable::getBasePackageCount() const
5244 {
5245 if (mError != NO_ERROR) {
5246 return 0;
5247 }
5248 return mPackageGroups.size();
5249 }
5250
getBasePackageName(size_t idx) const5251 const String16 ResTable::getBasePackageName(size_t idx) const
5252 {
5253 if (mError != NO_ERROR) {
5254 return String16();
5255 }
5256 LOG_FATAL_IF(idx >= mPackageGroups.size(),
5257 "Requested package index %d past package count %d",
5258 (int)idx, (int)mPackageGroups.size());
5259 return mPackageGroups[idx]->name;
5260 }
5261
getBasePackageId(size_t idx) const5262 uint32_t ResTable::getBasePackageId(size_t idx) const
5263 {
5264 if (mError != NO_ERROR) {
5265 return 0;
5266 }
5267 LOG_FATAL_IF(idx >= mPackageGroups.size(),
5268 "Requested package index %d past package count %d",
5269 (int)idx, (int)mPackageGroups.size());
5270 return mPackageGroups[idx]->id;
5271 }
5272
getLastTypeIdForPackage(size_t idx) const5273 uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
5274 {
5275 if (mError != NO_ERROR) {
5276 return 0;
5277 }
5278 LOG_FATAL_IF(idx >= mPackageGroups.size(),
5279 "Requested package index %d past package count %d",
5280 (int)idx, (int)mPackageGroups.size());
5281 const PackageGroup* const group = mPackageGroups[idx];
5282 return group->largestTypeId;
5283 }
5284
getTableCount() const5285 size_t ResTable::getTableCount() const
5286 {
5287 return mHeaders.size();
5288 }
5289
getTableStringBlock(size_t index) const5290 const ResStringPool* ResTable::getTableStringBlock(size_t index) const
5291 {
5292 return &mHeaders[index]->values;
5293 }
5294
getTableCookie(size_t index) const5295 int32_t ResTable::getTableCookie(size_t index) const
5296 {
5297 return mHeaders[index]->cookie;
5298 }
5299
getDynamicRefTableForCookie(int32_t cookie) const5300 const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
5301 {
5302 const size_t N = mPackageGroups.size();
5303 for (size_t i = 0; i < N; i++) {
5304 const PackageGroup* pg = mPackageGroups[i];
5305 size_t M = pg->packages.size();
5306 for (size_t j = 0; j < M; j++) {
5307 if (pg->packages[j]->header->cookie == cookie) {
5308 return &pg->dynamicRefTable;
5309 }
5310 }
5311 }
5312 return NULL;
5313 }
5314
getConfigurations(Vector<ResTable_config> * configs) const5315 void ResTable::getConfigurations(Vector<ResTable_config>* configs) const
5316 {
5317 const size_t packageCount = mPackageGroups.size();
5318 for (size_t i = 0; i < packageCount; i++) {
5319 const PackageGroup* packageGroup = mPackageGroups[i];
5320 const size_t typeCount = packageGroup->types.size();
5321 for (size_t j = 0; j < typeCount; j++) {
5322 const TypeList& typeList = packageGroup->types[j];
5323 const size_t numTypes = typeList.size();
5324 for (size_t k = 0; k < numTypes; k++) {
5325 const Type* type = typeList[k];
5326 const size_t numConfigs = type->configs.size();
5327 for (size_t m = 0; m < numConfigs; m++) {
5328 const ResTable_type* config = type->configs[m];
5329 ResTable_config cfg;
5330 memset(&cfg, 0, sizeof(ResTable_config));
5331 cfg.copyFromDtoH(config->config);
5332 // only insert unique
5333 const size_t N = configs->size();
5334 size_t n;
5335 for (n = 0; n < N; n++) {
5336 if (0 == (*configs)[n].compare(cfg)) {
5337 break;
5338 }
5339 }
5340 // if we didn't find it
5341 if (n == N) {
5342 configs->add(cfg);
5343 }
5344 }
5345 }
5346 }
5347 }
5348 }
5349
getLocales(Vector<String8> * locales) const5350 void ResTable::getLocales(Vector<String8>* locales) const
5351 {
5352 Vector<ResTable_config> configs;
5353 ALOGV("calling getConfigurations");
5354 getConfigurations(&configs);
5355 ALOGV("called getConfigurations size=%d", (int)configs.size());
5356 const size_t I = configs.size();
5357
5358 char locale[RESTABLE_MAX_LOCALE_LEN];
5359 for (size_t i=0; i<I; i++) {
5360 configs[i].getBcp47Locale(locale);
5361 const size_t J = locales->size();
5362 size_t j;
5363 for (j=0; j<J; j++) {
5364 if (0 == strcmp(locale, (*locales)[j].string())) {
5365 break;
5366 }
5367 }
5368 if (j == J) {
5369 locales->add(String8(locale));
5370 }
5371 }
5372 }
5373
StringPoolRef(const ResStringPool * pool,uint32_t index)5374 StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
5375 : mPool(pool), mIndex(index) {}
5376
StringPoolRef()5377 StringPoolRef::StringPoolRef()
5378 : mPool(NULL), mIndex(0) {}
5379
string8(size_t * outLen) const5380 const char* StringPoolRef::string8(size_t* outLen) const {
5381 if (mPool != NULL) {
5382 return mPool->string8At(mIndex, outLen);
5383 }
5384 if (outLen != NULL) {
5385 *outLen = 0;
5386 }
5387 return NULL;
5388 }
5389
string16(size_t * outLen) const5390 const char16_t* StringPoolRef::string16(size_t* outLen) const {
5391 if (mPool != NULL) {
5392 return mPool->stringAt(mIndex, outLen);
5393 }
5394 if (outLen != NULL) {
5395 *outLen = 0;
5396 }
5397 return NULL;
5398 }
5399
getResourceFlags(uint32_t resID,uint32_t * outFlags) const5400 bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
5401 if (mError != NO_ERROR) {
5402 return false;
5403 }
5404
5405 const ssize_t p = getResourcePackageIndex(resID);
5406 const int t = Res_GETTYPE(resID);
5407 const int e = Res_GETENTRY(resID);
5408
5409 if (p < 0) {
5410 if (Res_GETPACKAGE(resID)+1 == 0) {
5411 ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
5412 } else {
5413 ALOGW("No known package when getting flags for resource number 0x%08x", resID);
5414 }
5415 return false;
5416 }
5417 if (t < 0) {
5418 ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
5419 return false;
5420 }
5421
5422 const PackageGroup* const grp = mPackageGroups[p];
5423 if (grp == NULL) {
5424 ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
5425 return false;
5426 }
5427
5428 Entry entry;
5429 status_t err = getEntry(grp, t, e, NULL, &entry);
5430 if (err != NO_ERROR) {
5431 return false;
5432 }
5433
5434 *outFlags = entry.specFlags;
5435 return true;
5436 }
5437
getEntry(const PackageGroup * packageGroup,int typeIndex,int entryIndex,const ResTable_config * config,Entry * outEntry) const5438 status_t ResTable::getEntry(
5439 const PackageGroup* packageGroup, int typeIndex, int entryIndex,
5440 const ResTable_config* config,
5441 Entry* outEntry) const
5442 {
5443 const TypeList& typeList = packageGroup->types[typeIndex];
5444 if (typeList.isEmpty()) {
5445 ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
5446 return BAD_TYPE;
5447 }
5448
5449 const ResTable_type* bestType = NULL;
5450 uint32_t bestOffset = ResTable_type::NO_ENTRY;
5451 const Package* bestPackage = NULL;
5452 uint32_t specFlags = 0;
5453 uint8_t actualTypeIndex = typeIndex;
5454 ResTable_config bestConfig;
5455 memset(&bestConfig, 0, sizeof(bestConfig));
5456
5457 // Iterate over the Types of each package.
5458 const size_t typeCount = typeList.size();
5459 for (size_t i = 0; i < typeCount; i++) {
5460 const Type* const typeSpec = typeList[i];
5461
5462 int realEntryIndex = entryIndex;
5463 int realTypeIndex = typeIndex;
5464 bool currentTypeIsOverlay = false;
5465
5466 // Runtime overlay packages provide a mapping of app resource
5467 // ID to package resource ID.
5468 if (typeSpec->idmapEntries.hasEntries()) {
5469 uint16_t overlayEntryIndex;
5470 if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
5471 // No such mapping exists
5472 continue;
5473 }
5474 realEntryIndex = overlayEntryIndex;
5475 realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
5476 currentTypeIsOverlay = true;
5477 }
5478
5479 if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
5480 ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
5481 Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
5482 entryIndex, static_cast<int>(typeSpec->entryCount));
5483 // We should normally abort here, but some legacy apps declare
5484 // resources in the 'android' package (old bug in AAPT).
5485 continue;
5486 }
5487
5488 // Aggregate all the flags for each package that defines this entry.
5489 if (typeSpec->typeSpecFlags != NULL) {
5490 specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
5491 } else {
5492 specFlags = -1;
5493 }
5494
5495 const size_t numConfigs = typeSpec->configs.size();
5496 for (size_t c = 0; c < numConfigs; c++) {
5497 const ResTable_type* const thisType = typeSpec->configs[c];
5498 if (thisType == NULL) {
5499 continue;
5500 }
5501
5502 ResTable_config thisConfig;
5503 thisConfig.copyFromDtoH(thisType->config);
5504
5505 // Check to make sure this one is valid for the current parameters.
5506 if (config != NULL && !thisConfig.match(*config)) {
5507 continue;
5508 }
5509
5510 // Check if there is the desired entry in this type.
5511 const uint8_t* const end = reinterpret_cast<const uint8_t*>(thisType)
5512 + dtohl(thisType->header.size);
5513 const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
5514 reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
5515
5516 uint32_t thisOffset = dtohl(eindex[realEntryIndex]);
5517 if (thisOffset == ResTable_type::NO_ENTRY) {
5518 // There is no entry for this index and configuration.
5519 continue;
5520 }
5521
5522 if (bestType != NULL) {
5523 // Check if this one is less specific than the last found. If so,
5524 // we will skip it. We check starting with things we most care
5525 // about to those we least care about.
5526 if (!thisConfig.isBetterThan(bestConfig, config)) {
5527 if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
5528 continue;
5529 }
5530 }
5531 }
5532
5533 bestType = thisType;
5534 bestOffset = thisOffset;
5535 bestConfig = thisConfig;
5536 bestPackage = typeSpec->package;
5537 actualTypeIndex = realTypeIndex;
5538
5539 // If no config was specified, any type will do, so skip
5540 if (config == NULL) {
5541 break;
5542 }
5543 }
5544 }
5545
5546 if (bestType == NULL) {
5547 return BAD_INDEX;
5548 }
5549
5550 bestOffset += dtohl(bestType->entriesStart);
5551
5552 if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
5553 ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
5554 bestOffset, dtohl(bestType->header.size));
5555 return BAD_TYPE;
5556 }
5557 if ((bestOffset & 0x3) != 0) {
5558 ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
5559 return BAD_TYPE;
5560 }
5561
5562 const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
5563 reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
5564 if (dtohs(entry->size) < sizeof(*entry)) {
5565 ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
5566 return BAD_TYPE;
5567 }
5568
5569 if (outEntry != NULL) {
5570 outEntry->entry = entry;
5571 outEntry->config = bestConfig;
5572 outEntry->type = bestType;
5573 outEntry->specFlags = specFlags;
5574 outEntry->package = bestPackage;
5575 outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
5576 outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
5577 }
5578 return NO_ERROR;
5579 }
5580
parsePackage(const ResTable_package * const pkg,const Header * const header)5581 status_t ResTable::parsePackage(const ResTable_package* const pkg,
5582 const Header* const header)
5583 {
5584 const uint8_t* base = (const uint8_t*)pkg;
5585 status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
5586 header->dataEnd, "ResTable_package");
5587 if (err != NO_ERROR) {
5588 return (mError=err);
5589 }
5590
5591 const uint32_t pkgSize = dtohl(pkg->header.size);
5592
5593 if (dtohl(pkg->typeStrings) >= pkgSize) {
5594 ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
5595 dtohl(pkg->typeStrings), pkgSize);
5596 return (mError=BAD_TYPE);
5597 }
5598 if ((dtohl(pkg->typeStrings)&0x3) != 0) {
5599 ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
5600 dtohl(pkg->typeStrings));
5601 return (mError=BAD_TYPE);
5602 }
5603 if (dtohl(pkg->keyStrings) >= pkgSize) {
5604 ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
5605 dtohl(pkg->keyStrings), pkgSize);
5606 return (mError=BAD_TYPE);
5607 }
5608 if ((dtohl(pkg->keyStrings)&0x3) != 0) {
5609 ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
5610 dtohl(pkg->keyStrings));
5611 return (mError=BAD_TYPE);
5612 }
5613
5614 uint32_t id = dtohl(pkg->id);
5615 KeyedVector<uint8_t, IdmapEntries> idmapEntries;
5616
5617 if (header->resourceIDMap != NULL) {
5618 uint8_t targetPackageId = 0;
5619 status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
5620 if (err != NO_ERROR) {
5621 ALOGW("Overlay is broken");
5622 return (mError=err);
5623 }
5624 id = targetPackageId;
5625 }
5626
5627 if (id >= 256) {
5628 LOG_ALWAYS_FATAL("Package id out of range");
5629 return NO_ERROR;
5630 } else if (id == 0) {
5631 // This is a library so assign an ID
5632 id = mNextPackageId++;
5633 }
5634
5635 PackageGroup* group = NULL;
5636 Package* package = new Package(this, header, pkg);
5637 if (package == NULL) {
5638 return (mError=NO_MEMORY);
5639 }
5640
5641 err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
5642 header->dataEnd-(base+dtohl(pkg->typeStrings)));
5643 if (err != NO_ERROR) {
5644 delete group;
5645 delete package;
5646 return (mError=err);
5647 }
5648
5649 err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
5650 header->dataEnd-(base+dtohl(pkg->keyStrings)));
5651 if (err != NO_ERROR) {
5652 delete group;
5653 delete package;
5654 return (mError=err);
5655 }
5656
5657 size_t idx = mPackageMap[id];
5658 if (idx == 0) {
5659 idx = mPackageGroups.size() + 1;
5660
5661 char16_t tmpName[sizeof(pkg->name)/sizeof(char16_t)];
5662 strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(char16_t));
5663 group = new PackageGroup(this, String16(tmpName), id);
5664 if (group == NULL) {
5665 delete package;
5666 return (mError=NO_MEMORY);
5667 }
5668
5669 err = mPackageGroups.add(group);
5670 if (err < NO_ERROR) {
5671 return (mError=err);
5672 }
5673
5674 mPackageMap[id] = static_cast<uint8_t>(idx);
5675
5676 // Find all packages that reference this package
5677 size_t N = mPackageGroups.size();
5678 for (size_t i = 0; i < N; i++) {
5679 mPackageGroups[i]->dynamicRefTable.addMapping(
5680 group->name, static_cast<uint8_t>(group->id));
5681 }
5682 } else {
5683 group = mPackageGroups.itemAt(idx - 1);
5684 if (group == NULL) {
5685 return (mError=UNKNOWN_ERROR);
5686 }
5687 }
5688
5689 err = group->packages.add(package);
5690 if (err < NO_ERROR) {
5691 return (mError=err);
5692 }
5693
5694 // Iterate through all chunks.
5695 const ResChunk_header* chunk =
5696 (const ResChunk_header*)(((const uint8_t*)pkg)
5697 + dtohs(pkg->header.headerSize));
5698 const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
5699 while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
5700 ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
5701 TABLE_NOISY(ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
5702 dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
5703 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
5704 const size_t csize = dtohl(chunk->size);
5705 const uint16_t ctype = dtohs(chunk->type);
5706 if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
5707 const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
5708 err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
5709 endPos, "ResTable_typeSpec");
5710 if (err != NO_ERROR) {
5711 return (mError=err);
5712 }
5713
5714 const size_t typeSpecSize = dtohl(typeSpec->header.size);
5715 const size_t newEntryCount = dtohl(typeSpec->entryCount);
5716
5717 LOAD_TABLE_NOISY(printf("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5718 (void*)(base-(const uint8_t*)chunk),
5719 dtohs(typeSpec->header.type),
5720 dtohs(typeSpec->header.headerSize),
5721 (void*)typeSpecSize));
5722 // look for block overrun or int overflow when multiplying by 4
5723 if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
5724 || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5725 > typeSpecSize)) {
5726 ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
5727 (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5728 (void*)typeSpecSize);
5729 return (mError=BAD_TYPE);
5730 }
5731
5732 if (typeSpec->id == 0) {
5733 ALOGW("ResTable_type has an id of 0.");
5734 return (mError=BAD_TYPE);
5735 }
5736
5737 if (newEntryCount > 0) {
5738 uint8_t typeIndex = typeSpec->id - 1;
5739 ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
5740 if (idmapIndex >= 0) {
5741 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5742 }
5743
5744 TypeList& typeList = group->types.editItemAt(typeIndex);
5745 if (!typeList.isEmpty()) {
5746 const Type* existingType = typeList[0];
5747 if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
5748 ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
5749 (int) newEntryCount, (int) existingType->entryCount);
5750 // We should normally abort here, but some legacy apps declare
5751 // resources in the 'android' package (old bug in AAPT).
5752 }
5753 }
5754
5755 Type* t = new Type(header, package, newEntryCount);
5756 t->typeSpec = typeSpec;
5757 t->typeSpecFlags = (const uint32_t*)(
5758 ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
5759 if (idmapIndex >= 0) {
5760 t->idmapEntries = idmapEntries[idmapIndex];
5761 }
5762 typeList.add(t);
5763 group->largestTypeId = max(group->largestTypeId, typeSpec->id);
5764 } else {
5765 ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
5766 }
5767
5768 } else if (ctype == RES_TABLE_TYPE_TYPE) {
5769 const ResTable_type* type = (const ResTable_type*)(chunk);
5770 err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
5771 endPos, "ResTable_type");
5772 if (err != NO_ERROR) {
5773 return (mError=err);
5774 }
5775
5776 const uint32_t typeSize = dtohl(type->header.size);
5777 const size_t newEntryCount = dtohl(type->entryCount);
5778
5779 LOAD_TABLE_NOISY(printf("Type off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5780 (void*)(base-(const uint8_t*)chunk),
5781 dtohs(type->header.type),
5782 dtohs(type->header.headerSize),
5783 (void*)typeSize));
5784 if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5785 > typeSize) {
5786 ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
5787 (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5788 typeSize);
5789 return (mError=BAD_TYPE);
5790 }
5791
5792 if (newEntryCount != 0
5793 && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
5794 ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
5795 dtohl(type->entriesStart), typeSize);
5796 return (mError=BAD_TYPE);
5797 }
5798
5799 if (type->id == 0) {
5800 ALOGW("ResTable_type has an id of 0.");
5801 return (mError=BAD_TYPE);
5802 }
5803
5804 if (newEntryCount > 0) {
5805 uint8_t typeIndex = type->id - 1;
5806 ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
5807 if (idmapIndex >= 0) {
5808 typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5809 }
5810
5811 TypeList& typeList = group->types.editItemAt(typeIndex);
5812 if (typeList.isEmpty()) {
5813 ALOGE("No TypeSpec for type %d", type->id);
5814 return (mError=BAD_TYPE);
5815 }
5816
5817 Type* t = typeList.editItemAt(typeList.size() - 1);
5818 if (newEntryCount != t->entryCount) {
5819 ALOGE("ResTable_type entry count inconsistent: given %d, previously %d",
5820 (int)newEntryCount, (int)t->entryCount);
5821 return (mError=BAD_TYPE);
5822 }
5823
5824 if (t->package != package) {
5825 ALOGE("No TypeSpec for type %d", type->id);
5826 return (mError=BAD_TYPE);
5827 }
5828
5829 t->configs.add(type);
5830
5831 TABLE_GETENTRY(
5832 ResTable_config thisConfig;
5833 thisConfig.copyFromDtoH(type->config);
5834 ALOGI("Adding config to type %d: %s\n",
5835 type->id, thisConfig.toString().string()));
5836 } else {
5837 ALOGV("Skipping empty ResTable_type for type %d", type->id);
5838 }
5839
5840 } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
5841 if (group->dynamicRefTable.entries().size() == 0) {
5842 status_t err = group->dynamicRefTable.load((const ResTable_lib_header*) chunk);
5843 if (err != NO_ERROR) {
5844 return (mError=err);
5845 }
5846
5847 // Fill in the reference table with the entries we already know about.
5848 size_t N = mPackageGroups.size();
5849 for (size_t i = 0; i < N; i++) {
5850 group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
5851 }
5852 } else {
5853 ALOGW("Found multiple library tables, ignoring...");
5854 }
5855 } else {
5856 status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
5857 endPos, "ResTable_package:unknown");
5858 if (err != NO_ERROR) {
5859 return (mError=err);
5860 }
5861 }
5862 chunk = (const ResChunk_header*)
5863 (((const uint8_t*)chunk) + csize);
5864 }
5865
5866 return NO_ERROR;
5867 }
5868
DynamicRefTable(uint8_t packageId)5869 DynamicRefTable::DynamicRefTable(uint8_t packageId)
5870 : mAssignedPackageId(packageId)
5871 {
5872 memset(mLookupTable, 0, sizeof(mLookupTable));
5873
5874 // Reserved package ids
5875 mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
5876 mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
5877 }
5878
load(const ResTable_lib_header * const header)5879 status_t DynamicRefTable::load(const ResTable_lib_header* const header)
5880 {
5881 const uint32_t entryCount = dtohl(header->count);
5882 const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
5883 const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
5884 if (sizeOfEntries > expectedSize) {
5885 ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
5886 expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
5887 return UNKNOWN_ERROR;
5888 }
5889
5890 const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
5891 dtohl(header->header.headerSize));
5892 for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
5893 uint32_t packageId = dtohl(entry->packageId);
5894 char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
5895 strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
5896 LIB_NOISY(ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
5897 dtohl(entry->packageId)));
5898 if (packageId >= 256) {
5899 ALOGE("Bad package id 0x%08x", packageId);
5900 return UNKNOWN_ERROR;
5901 }
5902 mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
5903 entry = entry + 1;
5904 }
5905 return NO_ERROR;
5906 }
5907
addMappings(const DynamicRefTable & other)5908 status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
5909 if (mAssignedPackageId != other.mAssignedPackageId) {
5910 return UNKNOWN_ERROR;
5911 }
5912
5913 const size_t entryCount = other.mEntries.size();
5914 for (size_t i = 0; i < entryCount; i++) {
5915 ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
5916 if (index < 0) {
5917 mEntries.add(other.mEntries.keyAt(i), other.mEntries[i]);
5918 } else {
5919 if (other.mEntries[i] != mEntries[index]) {
5920 return UNKNOWN_ERROR;
5921 }
5922 }
5923 }
5924
5925 // Merge the lookup table. No entry can conflict
5926 // (value of 0 means not set).
5927 for (size_t i = 0; i < 256; i++) {
5928 if (mLookupTable[i] != other.mLookupTable[i]) {
5929 if (mLookupTable[i] == 0) {
5930 mLookupTable[i] = other.mLookupTable[i];
5931 } else if (other.mLookupTable[i] != 0) {
5932 return UNKNOWN_ERROR;
5933 }
5934 }
5935 }
5936 return NO_ERROR;
5937 }
5938
addMapping(const String16 & packageName,uint8_t packageId)5939 status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
5940 {
5941 ssize_t index = mEntries.indexOfKey(packageName);
5942 if (index < 0) {
5943 return UNKNOWN_ERROR;
5944 }
5945 mLookupTable[mEntries.valueAt(index)] = packageId;
5946 return NO_ERROR;
5947 }
5948
lookupResourceId(uint32_t * resId) const5949 status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
5950 uint32_t res = *resId;
5951 size_t packageId = Res_GETPACKAGE(res) + 1;
5952
5953 if (packageId == APP_PACKAGE_ID) {
5954 // No lookup needs to be done, app package IDs are absolute.
5955 return NO_ERROR;
5956 }
5957
5958 if (packageId == 0) {
5959 // The package ID is 0x00. That means that a shared library is accessing
5960 // its own local resource, so we fix up the resource with the calling
5961 // package ID.
5962 *resId |= ((uint32_t) mAssignedPackageId) << 24;
5963 return NO_ERROR;
5964 }
5965
5966 // Do a proper lookup.
5967 uint8_t translatedId = mLookupTable[packageId];
5968 if (translatedId == 0) {
5969 ALOGE("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
5970 (uint8_t)mAssignedPackageId, (uint8_t)packageId);
5971 for (size_t i = 0; i < 256; i++) {
5972 if (mLookupTable[i] != 0) {
5973 ALOGE("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
5974 }
5975 }
5976 return UNKNOWN_ERROR;
5977 }
5978
5979 *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
5980 return NO_ERROR;
5981 }
5982
lookupResourceValue(Res_value * value) const5983 status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
5984 if (value->dataType != Res_value::TYPE_DYNAMIC_REFERENCE) {
5985 return NO_ERROR;
5986 }
5987
5988 status_t err = lookupResourceId(&value->data);
5989 if (err != NO_ERROR) {
5990 return err;
5991 }
5992
5993 value->dataType = Res_value::TYPE_REFERENCE;
5994 return NO_ERROR;
5995 }
5996
5997 struct IdmapTypeMap {
5998 ssize_t overlayTypeId;
5999 size_t entryOffset;
6000 Vector<uint32_t> entryMap;
6001 };
6002
createIdmap(const ResTable & overlay,uint32_t targetCrc,uint32_t overlayCrc,const char * targetPath,const char * overlayPath,void ** outData,size_t * outSize) const6003 status_t ResTable::createIdmap(const ResTable& overlay,
6004 uint32_t targetCrc, uint32_t overlayCrc,
6005 const char* targetPath, const char* overlayPath,
6006 void** outData, size_t* outSize) const
6007 {
6008 // see README for details on the format of map
6009 if (mPackageGroups.size() == 0) {
6010 ALOGW("idmap: target package has no package groups, cannot create idmap\n");
6011 return UNKNOWN_ERROR;
6012 }
6013
6014 if (mPackageGroups[0]->packages.size() == 0) {
6015 ALOGW("idmap: target package has no packages in its first package group, "
6016 "cannot create idmap\n");
6017 return UNKNOWN_ERROR;
6018 }
6019
6020 KeyedVector<uint8_t, IdmapTypeMap> map;
6021
6022 // overlaid packages are assumed to contain only one package group
6023 const PackageGroup* pg = mPackageGroups[0];
6024
6025 // starting size is header
6026 *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
6027
6028 // target package id and number of types in map
6029 *outSize += 2 * sizeof(uint16_t);
6030
6031 // overlay packages are assumed to contain only one package group
6032 const String16 overlayPackage(overlay.mPackageGroups[0]->packages[0]->package->name);
6033
6034 for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
6035 const TypeList& typeList = pg->types[typeIndex];
6036 if (typeList.isEmpty()) {
6037 continue;
6038 }
6039
6040 const Type* typeConfigs = typeList[0];
6041
6042 IdmapTypeMap typeMap;
6043 typeMap.overlayTypeId = -1;
6044 typeMap.entryOffset = 0;
6045
6046 for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
6047 uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
6048 resource_name resName;
6049 if (!this->getResourceName(resID, false, &resName)) {
6050 if (typeMap.entryMap.isEmpty()) {
6051 typeMap.entryOffset++;
6052 }
6053 continue;
6054 }
6055
6056 const String16 overlayType(resName.type, resName.typeLen);
6057 const String16 overlayName(resName.name, resName.nameLen);
6058 uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
6059 overlayName.size(),
6060 overlayType.string(),
6061 overlayType.size(),
6062 overlayPackage.string(),
6063 overlayPackage.size());
6064 if (overlayResID == 0) {
6065 if (typeMap.entryMap.isEmpty()) {
6066 typeMap.entryOffset++;
6067 }
6068 continue;
6069 }
6070
6071 if (typeMap.overlayTypeId == -1) {
6072 typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
6073 }
6074
6075 if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
6076 ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
6077 " but entries should map to resources of type %02x",
6078 resID, overlayResID, typeMap.overlayTypeId);
6079 return BAD_TYPE;
6080 }
6081
6082 if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
6083 // Resize to accomodate this entry and the 0's in between.
6084 if (typeMap.entryMap.resize((entryIndex - typeMap.entryOffset) + 1) < 0) {
6085 return NO_MEMORY;
6086 }
6087 typeMap.entryMap.editTop() = Res_GETENTRY(overlayResID);
6088 } else {
6089 typeMap.entryMap.add(Res_GETENTRY(overlayResID));
6090 }
6091 }
6092
6093 if (!typeMap.entryMap.isEmpty()) {
6094 if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
6095 return NO_MEMORY;
6096 }
6097 *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
6098 }
6099 }
6100
6101 if (map.isEmpty()) {
6102 ALOGW("idmap: no resources in overlay package present in base package");
6103 return UNKNOWN_ERROR;
6104 }
6105
6106 if ((*outData = malloc(*outSize)) == NULL) {
6107 return NO_MEMORY;
6108 }
6109
6110 uint32_t* data = (uint32_t*)*outData;
6111 *data++ = htodl(IDMAP_MAGIC);
6112 *data++ = htodl(IDMAP_CURRENT_VERSION);
6113 *data++ = htodl(targetCrc);
6114 *data++ = htodl(overlayCrc);
6115 const char* paths[] = { targetPath, overlayPath };
6116 for (int j = 0; j < 2; ++j) {
6117 char* p = (char*)data;
6118 const char* path = paths[j];
6119 const size_t I = strlen(path);
6120 if (I > 255) {
6121 ALOGV("path exceeds expected 255 characters: %s\n", path);
6122 return UNKNOWN_ERROR;
6123 }
6124 for (size_t i = 0; i < 256; ++i) {
6125 *p++ = i < I ? path[i] : '\0';
6126 }
6127 data += 256 / sizeof(uint32_t);
6128 }
6129 const size_t mapSize = map.size();
6130 uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
6131 *typeData++ = htods(pg->id);
6132 *typeData++ = htods(mapSize);
6133 for (size_t i = 0; i < mapSize; ++i) {
6134 uint8_t targetTypeId = map.keyAt(i);
6135 const IdmapTypeMap& typeMap = map[i];
6136 *typeData++ = htods(targetTypeId + 1);
6137 *typeData++ = htods(typeMap.overlayTypeId);
6138 *typeData++ = htods(typeMap.entryMap.size());
6139 *typeData++ = htods(typeMap.entryOffset);
6140
6141 const size_t entryCount = typeMap.entryMap.size();
6142 uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
6143 for (size_t j = 0; j < entryCount; j++) {
6144 entries[j] = htodl(typeMap.entryMap[j]);
6145 }
6146 typeData += entryCount * 2;
6147 }
6148
6149 return NO_ERROR;
6150 }
6151
getIdmapInfo(const void * idmap,size_t sizeBytes,uint32_t * pVersion,uint32_t * pTargetCrc,uint32_t * pOverlayCrc,String8 * pTargetPath,String8 * pOverlayPath)6152 bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
6153 uint32_t* pVersion,
6154 uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
6155 String8* pTargetPath, String8* pOverlayPath)
6156 {
6157 const uint32_t* map = (const uint32_t*)idmap;
6158 if (!assertIdmapHeader(map, sizeBytes)) {
6159 return false;
6160 }
6161 if (pVersion) {
6162 *pVersion = dtohl(map[1]);
6163 }
6164 if (pTargetCrc) {
6165 *pTargetCrc = dtohl(map[2]);
6166 }
6167 if (pOverlayCrc) {
6168 *pOverlayCrc = dtohl(map[3]);
6169 }
6170 if (pTargetPath) {
6171 pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
6172 }
6173 if (pOverlayPath) {
6174 pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
6175 }
6176 return true;
6177 }
6178
6179
6180 #define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
6181
6182 #define CHAR16_ARRAY_EQ(constant, var, len) \
6183 ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
6184
print_complex(uint32_t complex,bool isFraction)6185 static void print_complex(uint32_t complex, bool isFraction)
6186 {
6187 const float MANTISSA_MULT =
6188 1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
6189 const float RADIX_MULTS[] = {
6190 1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
6191 1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
6192 };
6193
6194 float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
6195 <<Res_value::COMPLEX_MANTISSA_SHIFT))
6196 * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
6197 & Res_value::COMPLEX_RADIX_MASK];
6198 printf("%f", value);
6199
6200 if (!isFraction) {
6201 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6202 case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
6203 case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
6204 case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
6205 case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
6206 case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
6207 case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
6208 default: printf(" (unknown unit)"); break;
6209 }
6210 } else {
6211 switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6212 case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
6213 case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
6214 default: printf(" (unknown unit)"); break;
6215 }
6216 }
6217 }
6218
6219 // Normalize a string for output
normalizeForOutput(const char * input)6220 String8 ResTable::normalizeForOutput( const char *input )
6221 {
6222 String8 ret;
6223 char buff[2];
6224 buff[1] = '\0';
6225
6226 while (*input != '\0') {
6227 switch (*input) {
6228 // All interesting characters are in the ASCII zone, so we are making our own lives
6229 // easier by scanning the string one byte at a time.
6230 case '\\':
6231 ret += "\\\\";
6232 break;
6233 case '\n':
6234 ret += "\\n";
6235 break;
6236 case '"':
6237 ret += "\\\"";
6238 break;
6239 default:
6240 buff[0] = *input;
6241 ret += buff;
6242 break;
6243 }
6244
6245 input++;
6246 }
6247
6248 return ret;
6249 }
6250
print_value(const Package * pkg,const Res_value & value) const6251 void ResTable::print_value(const Package* pkg, const Res_value& value) const
6252 {
6253 if (value.dataType == Res_value::TYPE_NULL) {
6254 printf("(null)\n");
6255 } else if (value.dataType == Res_value::TYPE_REFERENCE) {
6256 printf("(reference) 0x%08x\n", value.data);
6257 } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
6258 printf("(dynamic reference) 0x%08x\n", value.data);
6259 } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
6260 printf("(attribute) 0x%08x\n", value.data);
6261 } else if (value.dataType == Res_value::TYPE_STRING) {
6262 size_t len;
6263 const char* str8 = pkg->header->values.string8At(
6264 value.data, &len);
6265 if (str8 != NULL) {
6266 printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
6267 } else {
6268 const char16_t* str16 = pkg->header->values.stringAt(
6269 value.data, &len);
6270 if (str16 != NULL) {
6271 printf("(string16) \"%s\"\n",
6272 normalizeForOutput(String8(str16, len).string()).string());
6273 } else {
6274 printf("(string) null\n");
6275 }
6276 }
6277 } else if (value.dataType == Res_value::TYPE_FLOAT) {
6278 printf("(float) %g\n", *(const float*)&value.data);
6279 } else if (value.dataType == Res_value::TYPE_DIMENSION) {
6280 printf("(dimension) ");
6281 print_complex(value.data, false);
6282 printf("\n");
6283 } else if (value.dataType == Res_value::TYPE_FRACTION) {
6284 printf("(fraction) ");
6285 print_complex(value.data, true);
6286 printf("\n");
6287 } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
6288 || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
6289 printf("(color) #%08x\n", value.data);
6290 } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
6291 printf("(boolean) %s\n", value.data ? "true" : "false");
6292 } else if (value.dataType >= Res_value::TYPE_FIRST_INT
6293 || value.dataType <= Res_value::TYPE_LAST_INT) {
6294 printf("(int) 0x%08x or %d\n", value.data, value.data);
6295 } else {
6296 printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
6297 (int)value.dataType, (int)value.data,
6298 (int)value.size, (int)value.res0);
6299 }
6300 }
6301
print(bool inclValues) const6302 void ResTable::print(bool inclValues) const
6303 {
6304 if (mError != 0) {
6305 printf("mError=0x%x (%s)\n", mError, strerror(mError));
6306 }
6307 size_t pgCount = mPackageGroups.size();
6308 printf("Package Groups (%d)\n", (int)pgCount);
6309 for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
6310 const PackageGroup* pg = mPackageGroups[pgIndex];
6311 printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
6312 (int)pgIndex, pg->id, (int)pg->packages.size(),
6313 String8(pg->name).string());
6314
6315 const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
6316 const size_t refEntryCount = refEntries.size();
6317 if (refEntryCount > 0) {
6318 printf(" DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
6319 for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
6320 printf(" 0x%02x -> %s\n",
6321 refEntries.valueAt(refIndex),
6322 String8(refEntries.keyAt(refIndex)).string());
6323 }
6324 printf("\n");
6325 }
6326
6327 int packageId = pg->id;
6328 size_t pkgCount = pg->packages.size();
6329 for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
6330 const Package* pkg = pg->packages[pkgIndex];
6331 // Use a package's real ID, since the ID may have been assigned
6332 // if this package is a shared library.
6333 packageId = pkg->package->id;
6334 printf(" Package %d id=0x%02x name=%s\n", (int)pkgIndex,
6335 pkg->package->id, String8(String16(pkg->package->name)).string());
6336 }
6337
6338 for (size_t typeIndex=0; typeIndex < pg->types.size(); typeIndex++) {
6339 const TypeList& typeList = pg->types[typeIndex];
6340 if (typeList.isEmpty()) {
6341 continue;
6342 }
6343 const Type* typeConfigs = typeList[0];
6344 const size_t NTC = typeConfigs->configs.size();
6345 printf(" type %d configCount=%d entryCount=%d\n",
6346 (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
6347 if (typeConfigs->typeSpecFlags != NULL) {
6348 for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
6349 uint32_t resID = (0xff000000 & ((packageId)<<24))
6350 | (0x00ff0000 & ((typeIndex+1)<<16))
6351 | (0x0000ffff & (entryIndex));
6352 // Since we are creating resID without actually
6353 // iterating over them, we have no idea which is a
6354 // dynamic reference. We must check.
6355 if (packageId == 0) {
6356 pg->dynamicRefTable.lookupResourceId(&resID);
6357 }
6358
6359 resource_name resName;
6360 if (this->getResourceName(resID, true, &resName)) {
6361 String8 type8;
6362 String8 name8;
6363 if (resName.type8 != NULL) {
6364 type8 = String8(resName.type8, resName.typeLen);
6365 } else {
6366 type8 = String8(resName.type, resName.typeLen);
6367 }
6368 if (resName.name8 != NULL) {
6369 name8 = String8(resName.name8, resName.nameLen);
6370 } else {
6371 name8 = String8(resName.name, resName.nameLen);
6372 }
6373 printf(" spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
6374 resID,
6375 CHAR16_TO_CSTR(resName.package, resName.packageLen),
6376 type8.string(), name8.string(),
6377 dtohl(typeConfigs->typeSpecFlags[entryIndex]));
6378 } else {
6379 printf(" INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
6380 }
6381 }
6382 }
6383 for (size_t configIndex=0; configIndex<NTC; configIndex++) {
6384 const ResTable_type* type = typeConfigs->configs[configIndex];
6385 if ((((uint64_t)type)&0x3) != 0) {
6386 printf(" NON-INTEGER ResTable_type ADDRESS: %p\n", type);
6387 continue;
6388 }
6389 String8 configStr = type->config.toString();
6390 printf(" config %s:\n", configStr.size() > 0
6391 ? configStr.string() : "(default)");
6392 size_t entryCount = dtohl(type->entryCount);
6393 uint32_t entriesStart = dtohl(type->entriesStart);
6394 if ((entriesStart&0x3) != 0) {
6395 printf(" NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n", entriesStart);
6396 continue;
6397 }
6398 uint32_t typeSize = dtohl(type->header.size);
6399 if ((typeSize&0x3) != 0) {
6400 printf(" NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
6401 continue;
6402 }
6403 for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
6404
6405 const uint8_t* const end = ((const uint8_t*)type)
6406 + dtohl(type->header.size);
6407 const uint32_t* const eindex = (const uint32_t*)
6408 (((const uint8_t*)type) + dtohs(type->header.headerSize));
6409
6410 uint32_t thisOffset = dtohl(eindex[entryIndex]);
6411 if (thisOffset == ResTable_type::NO_ENTRY) {
6412 continue;
6413 }
6414
6415 uint32_t resID = (0xff000000 & ((packageId)<<24))
6416 | (0x00ff0000 & ((typeIndex+1)<<16))
6417 | (0x0000ffff & (entryIndex));
6418 if (packageId == 0) {
6419 pg->dynamicRefTable.lookupResourceId(&resID);
6420 }
6421 resource_name resName;
6422 if (this->getResourceName(resID, true, &resName)) {
6423 String8 type8;
6424 String8 name8;
6425 if (resName.type8 != NULL) {
6426 type8 = String8(resName.type8, resName.typeLen);
6427 } else {
6428 type8 = String8(resName.type, resName.typeLen);
6429 }
6430 if (resName.name8 != NULL) {
6431 name8 = String8(resName.name8, resName.nameLen);
6432 } else {
6433 name8 = String8(resName.name, resName.nameLen);
6434 }
6435 printf(" resource 0x%08x %s:%s/%s: ", resID,
6436 CHAR16_TO_CSTR(resName.package, resName.packageLen),
6437 type8.string(), name8.string());
6438 } else {
6439 printf(" INVALID RESOURCE 0x%08x: ", resID);
6440 }
6441 if ((thisOffset&0x3) != 0) {
6442 printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
6443 continue;
6444 }
6445 if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
6446 printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
6447 entriesStart, thisOffset, typeSize);
6448 continue;
6449 }
6450
6451 const ResTable_entry* ent = (const ResTable_entry*)
6452 (((const uint8_t*)type) + entriesStart + thisOffset);
6453 if (((entriesStart + thisOffset)&0x3) != 0) {
6454 printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
6455 (entriesStart + thisOffset));
6456 continue;
6457 }
6458
6459 uintptr_t esize = dtohs(ent->size);
6460 if ((esize&0x3) != 0) {
6461 printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
6462 continue;
6463 }
6464 if ((thisOffset+esize) > typeSize) {
6465 printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
6466 entriesStart, thisOffset, (void *)esize, typeSize);
6467 continue;
6468 }
6469
6470 const Res_value* valuePtr = NULL;
6471 const ResTable_map_entry* bagPtr = NULL;
6472 Res_value value;
6473 if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
6474 printf("<bag>");
6475 bagPtr = (const ResTable_map_entry*)ent;
6476 } else {
6477 valuePtr = (const Res_value*)
6478 (((const uint8_t*)ent) + esize);
6479 value.copyFrom_dtoh(*valuePtr);
6480 printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
6481 (int)value.dataType, (int)value.data,
6482 (int)value.size, (int)value.res0);
6483 }
6484
6485 if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
6486 printf(" (PUBLIC)");
6487 }
6488 printf("\n");
6489
6490 if (inclValues) {
6491 if (valuePtr != NULL) {
6492 printf(" ");
6493 print_value(typeConfigs->package, value);
6494 } else if (bagPtr != NULL) {
6495 const int N = dtohl(bagPtr->count);
6496 const uint8_t* baseMapPtr = (const uint8_t*)ent;
6497 size_t mapOffset = esize;
6498 const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6499 const uint32_t parent = dtohl(bagPtr->parent.ident);
6500 uint32_t resolvedParent = parent;
6501 if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
6502 status_t err = pg->dynamicRefTable.lookupResourceId(&resolvedParent);
6503 if (err != NO_ERROR) {
6504 resolvedParent = 0;
6505 }
6506 }
6507 printf(" Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
6508 parent, resolvedParent, N);
6509 for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
6510 printf(" #%i (Key=0x%08x): ",
6511 i, dtohl(mapPtr->name.ident));
6512 value.copyFrom_dtoh(mapPtr->value);
6513 print_value(typeConfigs->package, value);
6514 const size_t size = dtohs(mapPtr->value.size);
6515 mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
6516 mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6517 }
6518 }
6519 }
6520 }
6521 }
6522 }
6523 }
6524 }
6525
6526 } // namespace android
6527