ResourceTypes.cpp revision 39b58ba2b299e1c97e13535aae9add530d942c7b 
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/ResourceTypes.h>
21#include <utils/Atomic.h>
22#include <utils/ByteOrder.h>
23#include <utils/Debug.h>
24#include <utils/Log.h>
25#include <utils/String16.h>
26#include <utils/String8.h>
27#include <utils/TextOutput.h>
28
29#include <stdlib.h>
30#include <string.h>
31#include <memory.h>
32#include <ctype.h>
33#include <stdint.h>
34
35#ifndef INT32_MAX
36#define INT32_MAX ((int32_t)(2147483647))
37#endif
38
39#define POOL_NOISY(x) //x
40#define XML_NOISY(x) //x
41#define TABLE_NOISY(x) //x
42#define TABLE_GETENTRY(x) //x
43#define TABLE_SUPER_NOISY(x) //x
44#define LOAD_TABLE_NOISY(x) //x
45#define TABLE_THEME(x) //x
46
47namespace android {
48
49#ifdef HAVE_WINSOCK
50#undef  nhtol
51#undef  htonl
52
53#ifdef HAVE_LITTLE_ENDIAN
54#define ntohl(x)    ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
55#define htonl(x)    ntohl(x)
56#define ntohs(x)    ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
57#define htons(x)    ntohs(x)
58#else
59#define ntohl(x)    (x)
60#define htonl(x)    (x)
61#define ntohs(x)    (x)
62#define htons(x)    (x)
63#endif
64#endif
65
66#define IDMAP_MAGIC         0x706d6469
67// size measured in sizeof(uint32_t)
68#define IDMAP_HEADER_SIZE (ResTable::IDMAP_HEADER_SIZE_BYTES / sizeof(uint32_t))
69
70static void printToLogFunc(void* cookie, const char* txt)
71{
72    ALOGV("%s", txt);
73}
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.
78inline int isspace16(char16_t c) {
79    return (c < 0x0080 && isspace(c));
80}
81
82// range checked; guaranteed to NUL-terminate within the stated number of available slots
83// NOTE: if this truncates the dst string due to running out of space, no attempt is
84// made to avoid splitting surrogate pairs.
85static void strcpy16_dtoh(uint16_t* dst, const uint16_t* src, size_t avail)
86{
87    uint16_t* last = dst + avail - 1;
88    while (*src && (dst < last)) {
89        char16_t s = dtohs(*src);
90        *dst++ = s;
91        src++;
92    }
93    *dst = 0;
94}
95
96static status_t validate_chunk(const ResChunk_header* chunk,
97                               size_t minSize,
98                               const uint8_t* dataEnd,
99                               const char* name)
100{
101    const uint16_t headerSize = dtohs(chunk->headerSize);
102    const uint32_t size = dtohl(chunk->size);
103
104    if (headerSize >= minSize) {
105        if (headerSize <= size) {
106            if (((headerSize|size)&0x3) == 0) {
107                if ((ssize_t)size <= (dataEnd-((const uint8_t*)chunk))) {
108                    return NO_ERROR;
109                }
110                ALOGW("%s data size %p extends beyond resource end %p.",
111                     name, (void*)size,
112                     (void*)(dataEnd-((const uint8_t*)chunk)));
113                return BAD_TYPE;
114            }
115            ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
116                 name, (int)size, (int)headerSize);
117            return BAD_TYPE;
118        }
119        ALOGW("%s size %p is smaller than header size %p.",
120             name, (void*)size, (void*)(int)headerSize);
121        return BAD_TYPE;
122    }
123    ALOGW("%s header size %p is too small.",
124         name, (void*)(int)headerSize);
125    return BAD_TYPE;
126}
127
128inline void Res_value::copyFrom_dtoh(const Res_value& src)
129{
130    size = dtohs(src.size);
131    res0 = src.res0;
132    dataType = src.dataType;
133    data = dtohl(src.data);
134}
135
136void Res_png_9patch::deviceToFile()
137{
138    for (int i = 0; i < numXDivs; i++) {
139        xDivs[i] = htonl(xDivs[i]);
140    }
141    for (int i = 0; i < numYDivs; i++) {
142        yDivs[i] = htonl(yDivs[i]);
143    }
144    paddingLeft = htonl(paddingLeft);
145    paddingRight = htonl(paddingRight);
146    paddingTop = htonl(paddingTop);
147    paddingBottom = htonl(paddingBottom);
148    for (int i=0; i<numColors; i++) {
149        colors[i] = htonl(colors[i]);
150    }
151}
152
153void Res_png_9patch::fileToDevice()
154{
155    for (int i = 0; i < numXDivs; i++) {
156        xDivs[i] = ntohl(xDivs[i]);
157    }
158    for (int i = 0; i < numYDivs; i++) {
159        yDivs[i] = ntohl(yDivs[i]);
160    }
161    paddingLeft = ntohl(paddingLeft);
162    paddingRight = ntohl(paddingRight);
163    paddingTop = ntohl(paddingTop);
164    paddingBottom = ntohl(paddingBottom);
165    for (int i=0; i<numColors; i++) {
166        colors[i] = ntohl(colors[i]);
167    }
168}
169
170size_t Res_png_9patch::serializedSize()
171{
172    // The size of this struct is 32 bytes on the 32-bit target system
173    // 4 * int8_t
174    // 4 * int32_t
175    // 3 * pointer
176    return 32
177            + numXDivs * sizeof(int32_t)
178            + numYDivs * sizeof(int32_t)
179            + numColors * sizeof(uint32_t);
180}
181
182void* Res_png_9patch::serialize()
183{
184    // Use calloc since we're going to leave a few holes in the data
185    // and want this to run cleanly under valgrind
186    void* newData = calloc(1, serializedSize());
187    serialize(newData);
188    return newData;
189}
190
191void Res_png_9patch::serialize(void * outData)
192{
193    char* data = (char*) outData;
194    memmove(data, &wasDeserialized, 4);     // copy  wasDeserialized, numXDivs, numYDivs, numColors
195    memmove(data + 12, &paddingLeft, 16);   // copy paddingXXXX
196    data += 32;
197
198    memmove(data, this->xDivs, numXDivs * sizeof(int32_t));
199    data +=  numXDivs * sizeof(int32_t);
200    memmove(data, this->yDivs, numYDivs * sizeof(int32_t));
201    data +=  numYDivs * sizeof(int32_t);
202    memmove(data, this->colors, numColors * sizeof(uint32_t));
203}
204
205static void deserializeInternal(const void* inData, Res_png_9patch* outData) {
206    char* patch = (char*) inData;
207    if (inData != outData) {
208        memmove(&outData->wasDeserialized, patch, 4);     // copy  wasDeserialized, numXDivs, numYDivs, numColors
209        memmove(&outData->paddingLeft, patch + 12, 4);     // copy  wasDeserialized, numXDivs, numYDivs, numColors
210    }
211    outData->wasDeserialized = true;
212    char* data = (char*)outData;
213    data +=  sizeof(Res_png_9patch);
214    outData->xDivs = (int32_t*) data;
215    data +=  outData->numXDivs * sizeof(int32_t);
216    outData->yDivs = (int32_t*) data;
217    data +=  outData->numYDivs * sizeof(int32_t);
218    outData->colors = (uint32_t*) data;
219}
220
221static bool assertIdmapHeader(const uint32_t* map, size_t sizeBytes)
222{
223    if (sizeBytes < ResTable::IDMAP_HEADER_SIZE_BYTES) {
224        ALOGW("idmap assertion failed: size=%d bytes\n", (int)sizeBytes);
225        return false;
226    }
227    if (*map != htodl(IDMAP_MAGIC)) { // htodl: map data expected to be in correct endianess
228        ALOGW("idmap assertion failed: invalid magic found (is 0x%08x, expected 0x%08x)\n",
229             *map, htodl(IDMAP_MAGIC));
230        return false;
231    }
232    return true;
233}
234
235static status_t idmapLookup(const uint32_t* map, size_t sizeBytes, uint32_t key, uint32_t* outValue)
236{
237    // see README for details on the format of map
238    if (!assertIdmapHeader(map, sizeBytes)) {
239        return UNKNOWN_ERROR;
240    }
241    map = map + IDMAP_HEADER_SIZE; // skip ahead to data segment
242    // size of data block, in uint32_t
243    const size_t size = (sizeBytes - ResTable::IDMAP_HEADER_SIZE_BYTES) / sizeof(uint32_t);
244    const uint32_t type = Res_GETTYPE(key) + 1; // add one, idmap stores "public" type id
245    const uint32_t entry = Res_GETENTRY(key);
246    const uint32_t typeCount = *map;
247
248    if (type > typeCount) {
249        ALOGW("Resource ID map: type=%d exceeds number of types=%d\n", type, typeCount);
250        return UNKNOWN_ERROR;
251    }
252    if (typeCount > size) {
253        ALOGW("Resource ID map: number of types=%d exceeds size of map=%d\n", typeCount, (int)size);
254        return UNKNOWN_ERROR;
255    }
256    const uint32_t typeOffset = map[type];
257    if (typeOffset == 0) {
258        *outValue = 0;
259        return NO_ERROR;
260    }
261    if (typeOffset + 1 > size) {
262        ALOGW("Resource ID map: type offset=%d exceeds reasonable value, size of map=%d\n",
263             typeOffset, (int)size);
264        return UNKNOWN_ERROR;
265    }
266    const uint32_t entryCount = map[typeOffset];
267    const uint32_t entryOffset = map[typeOffset + 1];
268    if (entryCount == 0 || entry < entryOffset || entry - entryOffset > entryCount - 1) {
269        *outValue = 0;
270        return NO_ERROR;
271    }
272    const uint32_t index = typeOffset + 2 + entry - entryOffset;
273    if (index > size) {
274        ALOGW("Resource ID map: entry index=%d exceeds size of map=%d\n", index, (int)size);
275        *outValue = 0;
276        return NO_ERROR;
277    }
278    *outValue = map[index];
279
280    return NO_ERROR;
281}
282
283static status_t getIdmapPackageId(const uint32_t* map, size_t mapSize, uint32_t *outId)
284{
285    if (!assertIdmapHeader(map, mapSize)) {
286        return UNKNOWN_ERROR;
287    }
288    const uint32_t* p = map + IDMAP_HEADER_SIZE + 1;
289    while (*p == 0) {
290        ++p;
291    }
292    *outId = (map[*p + IDMAP_HEADER_SIZE + 2] >> 24) & 0x000000ff;
293    return NO_ERROR;
294}
295
296Res_png_9patch* Res_png_9patch::deserialize(const void* inData)
297{
298    if (sizeof(void*) != sizeof(int32_t)) {
299        ALOGE("Cannot deserialize on non 32-bit system\n");
300        return NULL;
301    }
302    deserializeInternal(inData, (Res_png_9patch*) inData);
303    return (Res_png_9patch*) inData;
304}
305
306// --------------------------------------------------------------------
307// --------------------------------------------------------------------
308// --------------------------------------------------------------------
309
310ResStringPool::ResStringPool()
311    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
312{
313}
314
315ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
316    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
317{
318    setTo(data, size, copyData);
319}
320
321ResStringPool::~ResStringPool()
322{
323    uninit();
324}
325
326status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
327{
328    if (!data || !size) {
329        return (mError=BAD_TYPE);
330    }
331
332    uninit();
333
334    const bool notDeviceEndian = htods(0xf0) != 0xf0;
335
336    if (copyData || notDeviceEndian) {
337        mOwnedData = malloc(size);
338        if (mOwnedData == NULL) {
339            return (mError=NO_MEMORY);
340        }
341        memcpy(mOwnedData, data, size);
342        data = mOwnedData;
343    }
344
345    mHeader = (const ResStringPool_header*)data;
346
347    if (notDeviceEndian) {
348        ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
349        h->header.headerSize = dtohs(mHeader->header.headerSize);
350        h->header.type = dtohs(mHeader->header.type);
351        h->header.size = dtohl(mHeader->header.size);
352        h->stringCount = dtohl(mHeader->stringCount);
353        h->styleCount = dtohl(mHeader->styleCount);
354        h->flags = dtohl(mHeader->flags);
355        h->stringsStart = dtohl(mHeader->stringsStart);
356        h->stylesStart = dtohl(mHeader->stylesStart);
357    }
358
359    if (mHeader->header.headerSize > mHeader->header.size
360            || mHeader->header.size > size) {
361        ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
362                (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
363        return (mError=BAD_TYPE);
364    }
365    mSize = mHeader->header.size;
366    mEntries = (const uint32_t*)
367        (((const uint8_t*)data)+mHeader->header.headerSize);
368
369    if (mHeader->stringCount > 0) {
370        if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount)  // uint32 overflow?
371            || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
372                > size) {
373            ALOGW("Bad string block: entry of %d items extends past data size %d\n",
374                    (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
375                    (int)size);
376            return (mError=BAD_TYPE);
377        }
378
379        size_t charSize;
380        if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
381            charSize = sizeof(uint8_t);
382            mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
383        } else {
384            charSize = sizeof(char16_t);
385        }
386
387        mStrings = (const void*)
388            (((const uint8_t*)data)+mHeader->stringsStart);
389        if (mHeader->stringsStart >= (mHeader->header.size-sizeof(uint16_t))) {
390            ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
391                    (int)mHeader->stringsStart, (int)mHeader->header.size);
392            return (mError=BAD_TYPE);
393        }
394        if (mHeader->styleCount == 0) {
395            mStringPoolSize =
396                (mHeader->header.size-mHeader->stringsStart)/charSize;
397        } else {
398            // check invariant: styles starts before end of data
399            if (mHeader->stylesStart >= (mHeader->header.size-sizeof(uint16_t))) {
400                ALOGW("Bad style block: style block starts at %d past data size of %d\n",
401                    (int)mHeader->stylesStart, (int)mHeader->header.size);
402                return (mError=BAD_TYPE);
403            }
404            // check invariant: styles follow the strings
405            if (mHeader->stylesStart <= mHeader->stringsStart) {
406                ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
407                    (int)mHeader->stylesStart, (int)mHeader->stringsStart);
408                return (mError=BAD_TYPE);
409            }
410            mStringPoolSize =
411                (mHeader->stylesStart-mHeader->stringsStart)/charSize;
412        }
413
414        // check invariant: stringCount > 0 requires a string pool to exist
415        if (mStringPoolSize == 0) {
416            ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
417            return (mError=BAD_TYPE);
418        }
419
420        if (notDeviceEndian) {
421            size_t i;
422            uint32_t* e = const_cast<uint32_t*>(mEntries);
423            for (i=0; i<mHeader->stringCount; i++) {
424                e[i] = dtohl(mEntries[i]);
425            }
426            if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
427                const char16_t* strings = (const char16_t*)mStrings;
428                char16_t* s = const_cast<char16_t*>(strings);
429                for (i=0; i<mStringPoolSize; i++) {
430                    s[i] = dtohs(strings[i]);
431                }
432            }
433        }
434
435        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
436                ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
437                (!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
438                ((char16_t*)mStrings)[mStringPoolSize-1] != 0)) {
439            ALOGW("Bad string block: last string is not 0-terminated\n");
440            return (mError=BAD_TYPE);
441        }
442    } else {
443        mStrings = NULL;
444        mStringPoolSize = 0;
445    }
446
447    if (mHeader->styleCount > 0) {
448        mEntryStyles = mEntries + mHeader->stringCount;
449        // invariant: integer overflow in calculating mEntryStyles
450        if (mEntryStyles < mEntries) {
451            ALOGW("Bad string block: integer overflow finding styles\n");
452            return (mError=BAD_TYPE);
453        }
454
455        if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
456            ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
457                    (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
458                    (int)size);
459            return (mError=BAD_TYPE);
460        }
461        mStyles = (const uint32_t*)
462            (((const uint8_t*)data)+mHeader->stylesStart);
463        if (mHeader->stylesStart >= mHeader->header.size) {
464            ALOGW("Bad string block: style pool starts %d, after total size %d\n",
465                    (int)mHeader->stylesStart, (int)mHeader->header.size);
466            return (mError=BAD_TYPE);
467        }
468        mStylePoolSize =
469            (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
470
471        if (notDeviceEndian) {
472            size_t i;
473            uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
474            for (i=0; i<mHeader->styleCount; i++) {
475                e[i] = dtohl(mEntryStyles[i]);
476            }
477            uint32_t* s = const_cast<uint32_t*>(mStyles);
478            for (i=0; i<mStylePoolSize; i++) {
479                s[i] = dtohl(mStyles[i]);
480            }
481        }
482
483        const ResStringPool_span endSpan = {
484            { htodl(ResStringPool_span::END) },
485            htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
486        };
487        if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
488                   &endSpan, sizeof(endSpan)) != 0) {
489            ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
490            return (mError=BAD_TYPE);
491        }
492    } else {
493        mEntryStyles = NULL;
494        mStyles = NULL;
495        mStylePoolSize = 0;
496    }
497
498    return (mError=NO_ERROR);
499}
500
501status_t ResStringPool::getError() const
502{
503    return mError;
504}
505
506void ResStringPool::uninit()
507{
508    mError = NO_INIT;
509    if (mOwnedData) {
510        free(mOwnedData);
511        mOwnedData = NULL;
512    }
513    if (mHeader != NULL && mCache != NULL) {
514        for (size_t x = 0; x < mHeader->stringCount; x++) {
515            if (mCache[x] != NULL) {
516                free(mCache[x]);
517                mCache[x] = NULL;
518            }
519        }
520        free(mCache);
521        mCache = NULL;
522    }
523}
524
525/**
526 * Strings in UTF-16 format have length indicated by a length encoded in the
527 * stored data. It is either 1 or 2 characters of length data. This allows a
528 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
529 * much data in a string, you're abusing them.
530 *
531 * If the high bit is set, then there are two characters or 4 bytes of length
532 * data encoded. In that case, drop the high bit of the first character and
533 * add it together with the next character.
534 */
535static inline size_t
536decodeLength(const char16_t** str)
537{
538    size_t len = **str;
539    if ((len & 0x8000) != 0) {
540        (*str)++;
541        len = ((len & 0x7FFF) << 16) | **str;
542    }
543    (*str)++;
544    return len;
545}
546
547/**
548 * Strings in UTF-8 format have length indicated by a length encoded in the
549 * stored data. It is either 1 or 2 characters of length data. This allows a
550 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
551 * text in another way if you're using that much data in a single string.
552 *
553 * If the high bit is set, then there are two characters or 2 bytes of length
554 * data encoded. In that case, drop the high bit of the first character and
555 * add it together with the next character.
556 */
557static inline size_t
558decodeLength(const uint8_t** str)
559{
560    size_t len = **str;
561    if ((len & 0x80) != 0) {
562        (*str)++;
563        len = ((len & 0x7F) << 8) | **str;
564    }
565    (*str)++;
566    return len;
567}
568
569const uint16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
570{
571    if (mError == NO_ERROR && idx < mHeader->stringCount) {
572        const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
573        const uint32_t off = mEntries[idx]/(isUTF8?sizeof(char):sizeof(char16_t));
574        if (off < (mStringPoolSize-1)) {
575            if (!isUTF8) {
576                const char16_t* strings = (char16_t*)mStrings;
577                const char16_t* str = strings+off;
578
579                *u16len = decodeLength(&str);
580                if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
581                    return str;
582                } else {
583                    ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
584                            (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
585                }
586            } else {
587                const uint8_t* strings = (uint8_t*)mStrings;
588                const uint8_t* u8str = strings+off;
589
590                *u16len = decodeLength(&u8str);
591                size_t u8len = decodeLength(&u8str);
592
593                // encLen must be less than 0x7FFF due to encoding.
594                if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
595                    AutoMutex lock(mDecodeLock);
596
597                    if (mCache[idx] != NULL) {
598                        return mCache[idx];
599                    }
600
601                    ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
602                    if (actualLen < 0 || (size_t)actualLen != *u16len) {
603                        ALOGW("Bad string block: string #%lld decoded length is not correct "
604                                "%lld vs %llu\n",
605                                (long long)idx, (long long)actualLen, (long long)*u16len);
606                        return NULL;
607                    }
608
609                    char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
610                    if (!u16str) {
611                        ALOGW("No memory when trying to allocate decode cache for string #%d\n",
612                                (int)idx);
613                        return NULL;
614                    }
615
616                    utf8_to_utf16(u8str, u8len, u16str);
617                    mCache[idx] = u16str;
618                    return u16str;
619                } else {
620                    ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
621                            (long long)idx, (long long)(u8str+u8len-strings),
622                            (long long)mStringPoolSize);
623                }
624            }
625        } else {
626            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
627                    (int)idx, (int)(off*sizeof(uint16_t)),
628                    (int)(mStringPoolSize*sizeof(uint16_t)));
629        }
630    }
631    return NULL;
632}
633
634const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
635{
636    if (mError == NO_ERROR && idx < mHeader->stringCount) {
637        const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
638        const uint32_t off = mEntries[idx]/(isUTF8?sizeof(char):sizeof(char16_t));
639        if (off < (mStringPoolSize-1)) {
640            if (isUTF8) {
641                const uint8_t* strings = (uint8_t*)mStrings;
642                const uint8_t* str = strings+off;
643                *outLen = decodeLength(&str);
644                size_t encLen = decodeLength(&str);
645                if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
646                    return (const char*)str;
647                } else {
648                    ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
649                            (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
650                }
651            }
652        } else {
653            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
654                    (int)idx, (int)(off*sizeof(uint16_t)),
655                    (int)(mStringPoolSize*sizeof(uint16_t)));
656        }
657    }
658    return NULL;
659}
660
661const String8 ResStringPool::string8ObjectAt(size_t idx) const
662{
663    size_t len;
664    const char *str = (const char*)string8At(idx, &len);
665    if (str != NULL) {
666        return String8(str);
667    }
668    return String8(stringAt(idx, &len));
669}
670
671const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
672{
673    return styleAt(ref.index);
674}
675
676const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
677{
678    if (mError == NO_ERROR && idx < mHeader->styleCount) {
679        const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
680        if (off < mStylePoolSize) {
681            return (const ResStringPool_span*)(mStyles+off);
682        } else {
683            ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
684                    (int)idx, (int)(off*sizeof(uint32_t)),
685                    (int)(mStylePoolSize*sizeof(uint32_t)));
686        }
687    }
688    return NULL;
689}
690
691ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
692{
693    if (mError != NO_ERROR) {
694        return mError;
695    }
696
697    size_t len;
698
699    // TODO optimize searching for UTF-8 strings taking into account
700    // the cache fill to determine when to convert the searched-for
701    // string key to UTF-8.
702
703    if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
704        // Do a binary search for the string...
705        ssize_t l = 0;
706        ssize_t h = mHeader->stringCount-1;
707
708        ssize_t mid;
709        while (l <= h) {
710            mid = l + (h - l)/2;
711            const char16_t* s = stringAt(mid, &len);
712            int c = s ? strzcmp16(s, len, str, strLen) : -1;
713            POOL_NOISY(printf("Looking for %s, at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
714                         String8(str).string(),
715                         String8(s).string(),
716                         c, (int)l, (int)mid, (int)h));
717            if (c == 0) {
718                return mid;
719            } else if (c < 0) {
720                l = mid + 1;
721            } else {
722                h = mid - 1;
723            }
724        }
725    } else {
726        // It is unusual to get the ID from an unsorted string block...
727        // most often this happens because we want to get IDs for style
728        // span tags; since those always appear at the end of the string
729        // block, start searching at the back.
730        for (int i=mHeader->stringCount-1; i>=0; i--) {
731            const char16_t* s = stringAt(i, &len);
732            POOL_NOISY(printf("Looking for %s, at %s, i=%d\n",
733                         String8(str, strLen).string(),
734                         String8(s).string(),
735                         i));
736            if (s && strzcmp16(s, len, str, strLen) == 0) {
737                return i;
738            }
739        }
740    }
741
742    return NAME_NOT_FOUND;
743}
744
745size_t ResStringPool::size() const
746{
747    return (mError == NO_ERROR) ? mHeader->stringCount : 0;
748}
749
750size_t ResStringPool::styleCount() const
751{
752    return (mError == NO_ERROR) ? mHeader->styleCount : 0;
753}
754
755size_t ResStringPool::bytes() const
756{
757    return (mError == NO_ERROR) ? mHeader->header.size : 0;
758}
759
760bool ResStringPool::isSorted() const
761{
762    return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
763}
764
765bool ResStringPool::isUTF8() const
766{
767    return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
768}
769
770// --------------------------------------------------------------------
771// --------------------------------------------------------------------
772// --------------------------------------------------------------------
773
774ResXMLParser::ResXMLParser(const ResXMLTree& tree)
775    : mTree(tree), mEventCode(BAD_DOCUMENT)
776{
777}
778
779void ResXMLParser::restart()
780{
781    mCurNode = NULL;
782    mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
783}
784const ResStringPool& ResXMLParser::getStrings() const
785{
786    return mTree.mStrings;
787}
788
789ResXMLParser::event_code_t ResXMLParser::getEventType() const
790{
791    return mEventCode;
792}
793
794ResXMLParser::event_code_t ResXMLParser::next()
795{
796    if (mEventCode == START_DOCUMENT) {
797        mCurNode = mTree.mRootNode;
798        mCurExt = mTree.mRootExt;
799        return (mEventCode=mTree.mRootCode);
800    } else if (mEventCode >= FIRST_CHUNK_CODE) {
801        return nextNode();
802    }
803    return mEventCode;
804}
805
806int32_t ResXMLParser::getCommentID() const
807{
808    return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
809}
810
811const uint16_t* ResXMLParser::getComment(size_t* outLen) const
812{
813    int32_t id = getCommentID();
814    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
815}
816
817uint32_t ResXMLParser::getLineNumber() const
818{
819    return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
820}
821
822int32_t ResXMLParser::getTextID() const
823{
824    if (mEventCode == TEXT) {
825        return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
826    }
827    return -1;
828}
829
830const uint16_t* ResXMLParser::getText(size_t* outLen) const
831{
832    int32_t id = getTextID();
833    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
834}
835
836ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
837{
838    if (mEventCode == TEXT) {
839        outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
840        return sizeof(Res_value);
841    }
842    return BAD_TYPE;
843}
844
845int32_t ResXMLParser::getNamespacePrefixID() const
846{
847    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
848        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
849    }
850    return -1;
851}
852
853const uint16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
854{
855    int32_t id = getNamespacePrefixID();
856    //printf("prefix=%d  event=%p\n", id, mEventCode);
857    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
858}
859
860int32_t ResXMLParser::getNamespaceUriID() const
861{
862    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
863        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
864    }
865    return -1;
866}
867
868const uint16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
869{
870    int32_t id = getNamespaceUriID();
871    //printf("uri=%d  event=%p\n", id, mEventCode);
872    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
873}
874
875int32_t ResXMLParser::getElementNamespaceID() const
876{
877    if (mEventCode == START_TAG) {
878        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
879    }
880    if (mEventCode == END_TAG) {
881        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
882    }
883    return -1;
884}
885
886const uint16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
887{
888    int32_t id = getElementNamespaceID();
889    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
890}
891
892int32_t ResXMLParser::getElementNameID() const
893{
894    if (mEventCode == START_TAG) {
895        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
896    }
897    if (mEventCode == END_TAG) {
898        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
899    }
900    return -1;
901}
902
903const uint16_t* ResXMLParser::getElementName(size_t* outLen) const
904{
905    int32_t id = getElementNameID();
906    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
907}
908
909size_t ResXMLParser::getAttributeCount() const
910{
911    if (mEventCode == START_TAG) {
912        return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
913    }
914    return 0;
915}
916
917int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
918{
919    if (mEventCode == START_TAG) {
920        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
921        if (idx < dtohs(tag->attributeCount)) {
922            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
923                (((const uint8_t*)tag)
924                 + dtohs(tag->attributeStart)
925                 + (dtohs(tag->attributeSize)*idx));
926            return dtohl(attr->ns.index);
927        }
928    }
929    return -2;
930}
931
932const uint16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
933{
934    int32_t id = getAttributeNamespaceID(idx);
935    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
936    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
937    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
938}
939
940int32_t ResXMLParser::getAttributeNameID(size_t idx) const
941{
942    if (mEventCode == START_TAG) {
943        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
944        if (idx < dtohs(tag->attributeCount)) {
945            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
946                (((const uint8_t*)tag)
947                 + dtohs(tag->attributeStart)
948                 + (dtohs(tag->attributeSize)*idx));
949            return dtohl(attr->name.index);
950        }
951    }
952    return -1;
953}
954
955const uint16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
956{
957    int32_t id = getAttributeNameID(idx);
958    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
959    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
960    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
961}
962
963uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
964{
965    int32_t id = getAttributeNameID(idx);
966    if (id >= 0 && (size_t)id < mTree.mNumResIds) {
967        return dtohl(mTree.mResIds[id]);
968    }
969    return 0;
970}
971
972int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
973{
974    if (mEventCode == START_TAG) {
975        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
976        if (idx < dtohs(tag->attributeCount)) {
977            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
978                (((const uint8_t*)tag)
979                 + dtohs(tag->attributeStart)
980                 + (dtohs(tag->attributeSize)*idx));
981            return dtohl(attr->rawValue.index);
982        }
983    }
984    return -1;
985}
986
987const uint16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
988{
989    int32_t id = getAttributeValueStringID(idx);
990    //XML_NOISY(printf("getAttributeValue 0x%x=0x%x\n", idx, id));
991    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
992}
993
994int32_t ResXMLParser::getAttributeDataType(size_t idx) const
995{
996    if (mEventCode == START_TAG) {
997        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
998        if (idx < dtohs(tag->attributeCount)) {
999            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1000                (((const uint8_t*)tag)
1001                 + dtohs(tag->attributeStart)
1002                 + (dtohs(tag->attributeSize)*idx));
1003            return attr->typedValue.dataType;
1004        }
1005    }
1006    return Res_value::TYPE_NULL;
1007}
1008
1009int32_t ResXMLParser::getAttributeData(size_t idx) const
1010{
1011    if (mEventCode == START_TAG) {
1012        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1013        if (idx < dtohs(tag->attributeCount)) {
1014            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1015                (((const uint8_t*)tag)
1016                 + dtohs(tag->attributeStart)
1017                 + (dtohs(tag->attributeSize)*idx));
1018            return dtohl(attr->typedValue.data);
1019        }
1020    }
1021    return 0;
1022}
1023
1024ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1025{
1026    if (mEventCode == START_TAG) {
1027        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1028        if (idx < dtohs(tag->attributeCount)) {
1029            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1030                (((const uint8_t*)tag)
1031                 + dtohs(tag->attributeStart)
1032                 + (dtohs(tag->attributeSize)*idx));
1033            outValue->copyFrom_dtoh(attr->typedValue);
1034            return sizeof(Res_value);
1035        }
1036    }
1037    return BAD_TYPE;
1038}
1039
1040ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1041{
1042    String16 nsStr(ns != NULL ? ns : "");
1043    String16 attrStr(attr);
1044    return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1045                            attrStr.string(), attrStr.size());
1046}
1047
1048ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1049                                       const char16_t* attr, size_t attrLen) const
1050{
1051    if (mEventCode == START_TAG) {
1052        const size_t N = getAttributeCount();
1053        for (size_t i=0; i<N; i++) {
1054            size_t curNsLen, curAttrLen;
1055            const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1056            const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1057            //printf("%d: ns=%p attr=%p curNs=%p curAttr=%p\n",
1058            //       i, ns, attr, curNs, curAttr);
1059            //printf(" --> attr=%s, curAttr=%s\n",
1060            //       String8(attr).string(), String8(curAttr).string());
1061            if (attr && curAttr && (strzcmp16(attr, attrLen, curAttr, curAttrLen) == 0)) {
1062                if (ns == NULL) {
1063                    if (curNs == NULL) return i;
1064                } else if (curNs != NULL) {
1065                    //printf(" --> ns=%s, curNs=%s\n",
1066                    //       String8(ns).string(), String8(curNs).string());
1067                    if (strzcmp16(ns, nsLen, curNs, curNsLen) == 0) return i;
1068                }
1069            }
1070        }
1071    }
1072
1073    return NAME_NOT_FOUND;
1074}
1075
1076ssize_t ResXMLParser::indexOfID() const
1077{
1078    if (mEventCode == START_TAG) {
1079        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1080        if (idx > 0) return (idx-1);
1081    }
1082    return NAME_NOT_FOUND;
1083}
1084
1085ssize_t ResXMLParser::indexOfClass() const
1086{
1087    if (mEventCode == START_TAG) {
1088        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1089        if (idx > 0) return (idx-1);
1090    }
1091    return NAME_NOT_FOUND;
1092}
1093
1094ssize_t ResXMLParser::indexOfStyle() const
1095{
1096    if (mEventCode == START_TAG) {
1097        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1098        if (idx > 0) return (idx-1);
1099    }
1100    return NAME_NOT_FOUND;
1101}
1102
1103ResXMLParser::event_code_t ResXMLParser::nextNode()
1104{
1105    if (mEventCode < 0) {
1106        return mEventCode;
1107    }
1108
1109    do {
1110        const ResXMLTree_node* next = (const ResXMLTree_node*)
1111            (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1112        //ALOGW("Next node: prev=%p, next=%p\n", mCurNode, next);
1113
1114        if (((const uint8_t*)next) >= mTree.mDataEnd) {
1115            mCurNode = NULL;
1116            return (mEventCode=END_DOCUMENT);
1117        }
1118
1119        if (mTree.validateNode(next) != NO_ERROR) {
1120            mCurNode = NULL;
1121            return (mEventCode=BAD_DOCUMENT);
1122        }
1123
1124        mCurNode = next;
1125        const uint16_t headerSize = dtohs(next->header.headerSize);
1126        const uint32_t totalSize = dtohl(next->header.size);
1127        mCurExt = ((const uint8_t*)next) + headerSize;
1128        size_t minExtSize = 0;
1129        event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1130        switch ((mEventCode=eventCode)) {
1131            case RES_XML_START_NAMESPACE_TYPE:
1132            case RES_XML_END_NAMESPACE_TYPE:
1133                minExtSize = sizeof(ResXMLTree_namespaceExt);
1134                break;
1135            case RES_XML_START_ELEMENT_TYPE:
1136                minExtSize = sizeof(ResXMLTree_attrExt);
1137                break;
1138            case RES_XML_END_ELEMENT_TYPE:
1139                minExtSize = sizeof(ResXMLTree_endElementExt);
1140                break;
1141            case RES_XML_CDATA_TYPE:
1142                minExtSize = sizeof(ResXMLTree_cdataExt);
1143                break;
1144            default:
1145                ALOGW("Unknown XML block: header type %d in node at %d\n",
1146                     (int)dtohs(next->header.type),
1147                     (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1148                continue;
1149        }
1150
1151        if ((totalSize-headerSize) < minExtSize) {
1152            ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1153                 (int)dtohs(next->header.type),
1154                 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1155                 (int)(totalSize-headerSize), (int)minExtSize);
1156            return (mEventCode=BAD_DOCUMENT);
1157        }
1158
1159        //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1160        //       mCurNode, mCurExt, headerSize, minExtSize);
1161
1162        return eventCode;
1163    } while (true);
1164}
1165
1166void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1167{
1168    pos->eventCode = mEventCode;
1169    pos->curNode = mCurNode;
1170    pos->curExt = mCurExt;
1171}
1172
1173void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1174{
1175    mEventCode = pos.eventCode;
1176    mCurNode = pos.curNode;
1177    mCurExt = pos.curExt;
1178}
1179
1180
1181// --------------------------------------------------------------------
1182
1183static volatile int32_t gCount = 0;
1184
1185ResXMLTree::ResXMLTree()
1186    : ResXMLParser(*this)
1187    , mError(NO_INIT), mOwnedData(NULL)
1188{
1189    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1190    restart();
1191}
1192
1193ResXMLTree::ResXMLTree(const void* data, size_t size, bool copyData)
1194    : ResXMLParser(*this)
1195    , mError(NO_INIT), mOwnedData(NULL)
1196{
1197    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1198    setTo(data, size, copyData);
1199}
1200
1201ResXMLTree::~ResXMLTree()
1202{
1203    //ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1204    uninit();
1205}
1206
1207status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1208{
1209    uninit();
1210    mEventCode = START_DOCUMENT;
1211
1212    if (copyData) {
1213        mOwnedData = malloc(size);
1214        if (mOwnedData == NULL) {
1215            return (mError=NO_MEMORY);
1216        }
1217        memcpy(mOwnedData, data, size);
1218        data = mOwnedData;
1219    }
1220
1221    mHeader = (const ResXMLTree_header*)data;
1222    mSize = dtohl(mHeader->header.size);
1223    if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1224        ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1225             (int)dtohs(mHeader->header.headerSize),
1226             (int)dtohl(mHeader->header.size), (int)size);
1227        mError = BAD_TYPE;
1228        restart();
1229        return mError;
1230    }
1231    mDataEnd = ((const uint8_t*)mHeader) + mSize;
1232
1233    mStrings.uninit();
1234    mRootNode = NULL;
1235    mResIds = NULL;
1236    mNumResIds = 0;
1237
1238    // First look for a couple interesting chunks: the string block
1239    // and first XML node.
1240    const ResChunk_header* chunk =
1241        (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1242    const ResChunk_header* lastChunk = chunk;
1243    while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1244           ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1245        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1246        if (err != NO_ERROR) {
1247            mError = err;
1248            goto done;
1249        }
1250        const uint16_t type = dtohs(chunk->type);
1251        const size_t size = dtohl(chunk->size);
1252        XML_NOISY(printf("Scanning @ %p: type=0x%x, size=0x%x\n",
1253                     (void*)(((uint32_t)chunk)-((uint32_t)mHeader)), type, size));
1254        if (type == RES_STRING_POOL_TYPE) {
1255            mStrings.setTo(chunk, size);
1256        } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1257            mResIds = (const uint32_t*)
1258                (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1259            mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1260        } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1261                   && type <= RES_XML_LAST_CHUNK_TYPE) {
1262            if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1263                mError = BAD_TYPE;
1264                goto done;
1265            }
1266            mCurNode = (const ResXMLTree_node*)lastChunk;
1267            if (nextNode() == BAD_DOCUMENT) {
1268                mError = BAD_TYPE;
1269                goto done;
1270            }
1271            mRootNode = mCurNode;
1272            mRootExt = mCurExt;
1273            mRootCode = mEventCode;
1274            break;
1275        } else {
1276            XML_NOISY(printf("Skipping unknown chunk!\n"));
1277        }
1278        lastChunk = chunk;
1279        chunk = (const ResChunk_header*)
1280            (((const uint8_t*)chunk) + size);
1281    }
1282
1283    if (mRootNode == NULL) {
1284        ALOGW("Bad XML block: no root element node found\n");
1285        mError = BAD_TYPE;
1286        goto done;
1287    }
1288
1289    mError = mStrings.getError();
1290
1291done:
1292    restart();
1293    return mError;
1294}
1295
1296status_t ResXMLTree::getError() const
1297{
1298    return mError;
1299}
1300
1301void ResXMLTree::uninit()
1302{
1303    mError = NO_INIT;
1304    mStrings.uninit();
1305    if (mOwnedData) {
1306        free(mOwnedData);
1307        mOwnedData = NULL;
1308    }
1309    restart();
1310}
1311
1312status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1313{
1314    const uint16_t eventCode = dtohs(node->header.type);
1315
1316    status_t err = validate_chunk(
1317        &node->header, sizeof(ResXMLTree_node),
1318        mDataEnd, "ResXMLTree_node");
1319
1320    if (err >= NO_ERROR) {
1321        // Only perform additional validation on START nodes
1322        if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1323            return NO_ERROR;
1324        }
1325
1326        const uint16_t headerSize = dtohs(node->header.headerSize);
1327        const uint32_t size = dtohl(node->header.size);
1328        const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1329            (((const uint8_t*)node) + headerSize);
1330        // check for sensical values pulled out of the stream so far...
1331        if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1332                && ((void*)attrExt > (void*)node)) {
1333            const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1334                * dtohs(attrExt->attributeCount);
1335            if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1336                return NO_ERROR;
1337            }
1338            ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1339                    (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1340                    (unsigned int)(size-headerSize));
1341        }
1342        else {
1343            ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1344                (unsigned int)headerSize, (unsigned int)size);
1345        }
1346        return BAD_TYPE;
1347    }
1348
1349    return err;
1350
1351#if 0
1352    const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1353
1354    const uint16_t headerSize = dtohs(node->header.headerSize);
1355    const uint32_t size = dtohl(node->header.size);
1356
1357    if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1358        if (size >= headerSize) {
1359            if (((const uint8_t*)node) <= (mDataEnd-size)) {
1360                if (!isStart) {
1361                    return NO_ERROR;
1362                }
1363                if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1364                        <= (size-headerSize)) {
1365                    return NO_ERROR;
1366                }
1367                ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1368                        ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1369                        (int)(size-headerSize));
1370                return BAD_TYPE;
1371            }
1372            ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1373                    (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1374            return BAD_TYPE;
1375        }
1376        ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1377                (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1378                (int)headerSize, (int)size);
1379        return BAD_TYPE;
1380    }
1381    ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1382            (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1383            (int)headerSize);
1384    return BAD_TYPE;
1385#endif
1386}
1387
1388// --------------------------------------------------------------------
1389// --------------------------------------------------------------------
1390// --------------------------------------------------------------------
1391
1392void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1393    const size_t size = dtohl(o.size);
1394    if (size >= sizeof(ResTable_config)) {
1395        *this = o;
1396    } else {
1397        memcpy(this, &o, size);
1398        memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1399    }
1400}
1401
1402void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1403    copyFromDeviceNoSwap(o);
1404    size = sizeof(ResTable_config);
1405    mcc = dtohs(mcc);
1406    mnc = dtohs(mnc);
1407    density = dtohs(density);
1408    screenWidth = dtohs(screenWidth);
1409    screenHeight = dtohs(screenHeight);
1410    sdkVersion = dtohs(sdkVersion);
1411    minorVersion = dtohs(minorVersion);
1412    smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1413    screenWidthDp = dtohs(screenWidthDp);
1414    screenHeightDp = dtohs(screenHeightDp);
1415}
1416
1417void ResTable_config::swapHtoD() {
1418    size = htodl(size);
1419    mcc = htods(mcc);
1420    mnc = htods(mnc);
1421    density = htods(density);
1422    screenWidth = htods(screenWidth);
1423    screenHeight = htods(screenHeight);
1424    sdkVersion = htods(sdkVersion);
1425    minorVersion = htods(minorVersion);
1426    smallestScreenWidthDp = htods(smallestScreenWidthDp);
1427    screenWidthDp = htods(screenWidthDp);
1428    screenHeightDp = htods(screenHeightDp);
1429}
1430
1431int ResTable_config::compare(const ResTable_config& o) const {
1432    int32_t diff = (int32_t)(imsi - o.imsi);
1433    if (diff != 0) return diff;
1434    diff = (int32_t)(locale - o.locale);
1435    if (diff != 0) return diff;
1436    diff = (int32_t)(screenType - o.screenType);
1437    if (diff != 0) return diff;
1438    diff = (int32_t)(input - o.input);
1439    if (diff != 0) return diff;
1440    diff = (int32_t)(screenSize - o.screenSize);
1441    if (diff != 0) return diff;
1442    diff = (int32_t)(version - o.version);
1443    if (diff != 0) return diff;
1444    diff = (int32_t)(screenLayout - o.screenLayout);
1445    if (diff != 0) return diff;
1446    diff = (int32_t)(uiMode - o.uiMode);
1447    if (diff != 0) return diff;
1448    diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1449    if (diff != 0) return diff;
1450    diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1451    return (int)diff;
1452}
1453
1454int ResTable_config::compareLogical(const ResTable_config& o) const {
1455    if (mcc != o.mcc) {
1456        return mcc < o.mcc ? -1 : 1;
1457    }
1458    if (mnc != o.mnc) {
1459        return mnc < o.mnc ? -1 : 1;
1460    }
1461    if (language[0] != o.language[0]) {
1462        return language[0] < o.language[0] ? -1 : 1;
1463    }
1464    if (language[1] != o.language[1]) {
1465        return language[1] < o.language[1] ? -1 : 1;
1466    }
1467    if (country[0] != o.country[0]) {
1468        return country[0] < o.country[0] ? -1 : 1;
1469    }
1470    if (country[1] != o.country[1]) {
1471        return country[1] < o.country[1] ? -1 : 1;
1472    }
1473    if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1474        return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1475    }
1476    if (screenWidthDp != o.screenWidthDp) {
1477        return screenWidthDp < o.screenWidthDp ? -1 : 1;
1478    }
1479    if (screenHeightDp != o.screenHeightDp) {
1480        return screenHeightDp < o.screenHeightDp ? -1 : 1;
1481    }
1482    if (screenWidth != o.screenWidth) {
1483        return screenWidth < o.screenWidth ? -1 : 1;
1484    }
1485    if (screenHeight != o.screenHeight) {
1486        return screenHeight < o.screenHeight ? -1 : 1;
1487    }
1488    if (density != o.density) {
1489        return density < o.density ? -1 : 1;
1490    }
1491    if (orientation != o.orientation) {
1492        return orientation < o.orientation ? -1 : 1;
1493    }
1494    if (touchscreen != o.touchscreen) {
1495        return touchscreen < o.touchscreen ? -1 : 1;
1496    }
1497    if (input != o.input) {
1498        return input < o.input ? -1 : 1;
1499    }
1500    if (screenLayout != o.screenLayout) {
1501        return screenLayout < o.screenLayout ? -1 : 1;
1502    }
1503    if (uiMode != o.uiMode) {
1504        return uiMode < o.uiMode ? -1 : 1;
1505    }
1506    if (version != o.version) {
1507        return version < o.version ? -1 : 1;
1508    }
1509    return 0;
1510}
1511
1512int ResTable_config::diff(const ResTable_config& o) const {
1513    int diffs = 0;
1514    if (mcc != o.mcc) diffs |= CONFIG_MCC;
1515    if (mnc != o.mnc) diffs |= CONFIG_MNC;
1516    if (locale != o.locale) diffs |= CONFIG_LOCALE;
1517    if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1518    if (density != o.density) diffs |= CONFIG_DENSITY;
1519    if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1520    if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1521            diffs |= CONFIG_KEYBOARD_HIDDEN;
1522    if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1523    if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1524    if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1525    if (version != o.version) diffs |= CONFIG_VERSION;
1526    if (screenLayout != o.screenLayout) diffs |= CONFIG_SCREEN_LAYOUT;
1527    if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1528    if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1529    if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1530    return diffs;
1531}
1532
1533bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
1534    // The order of the following tests defines the importance of one
1535    // configuration parameter over another.  Those tests first are more
1536    // important, trumping any values in those following them.
1537    if (imsi || o.imsi) {
1538        if (mcc != o.mcc) {
1539            if (!mcc) return false;
1540            if (!o.mcc) return true;
1541        }
1542
1543        if (mnc != o.mnc) {
1544            if (!mnc) return false;
1545            if (!o.mnc) return true;
1546        }
1547    }
1548
1549    if (locale || o.locale) {
1550        if (language[0] != o.language[0]) {
1551            if (!language[0]) return false;
1552            if (!o.language[0]) return true;
1553        }
1554
1555        if (country[0] != o.country[0]) {
1556            if (!country[0]) return false;
1557            if (!o.country[0]) return true;
1558        }
1559    }
1560
1561    if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1562        if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1563            if (!smallestScreenWidthDp) return false;
1564            if (!o.smallestScreenWidthDp) return true;
1565        }
1566    }
1567
1568    if (screenSizeDp || o.screenSizeDp) {
1569        if (screenWidthDp != o.screenWidthDp) {
1570            if (!screenWidthDp) return false;
1571            if (!o.screenWidthDp) return true;
1572        }
1573
1574        if (screenHeightDp != o.screenHeightDp) {
1575            if (!screenHeightDp) return false;
1576            if (!o.screenHeightDp) return true;
1577        }
1578    }
1579
1580    if (screenLayout || o.screenLayout) {
1581        if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
1582            if (!(screenLayout & MASK_SCREENSIZE)) return false;
1583            if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
1584        }
1585        if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
1586            if (!(screenLayout & MASK_SCREENLONG)) return false;
1587            if (!(o.screenLayout & MASK_SCREENLONG)) return true;
1588        }
1589    }
1590
1591    if (orientation != o.orientation) {
1592        if (!orientation) return false;
1593        if (!o.orientation) return true;
1594    }
1595
1596    if (uiMode || o.uiMode) {
1597        if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
1598            if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
1599            if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
1600        }
1601        if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
1602            if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
1603            if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
1604        }
1605    }
1606
1607    // density is never 'more specific'
1608    // as the default just equals 160
1609
1610    if (touchscreen != o.touchscreen) {
1611        if (!touchscreen) return false;
1612        if (!o.touchscreen) return true;
1613    }
1614
1615    if (input || o.input) {
1616        if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
1617            if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
1618            if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
1619        }
1620
1621        if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
1622            if (!(inputFlags & MASK_NAVHIDDEN)) return false;
1623            if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
1624        }
1625
1626        if (keyboard != o.keyboard) {
1627            if (!keyboard) return false;
1628            if (!o.keyboard) return true;
1629        }
1630
1631        if (navigation != o.navigation) {
1632            if (!navigation) return false;
1633            if (!o.navigation) return true;
1634        }
1635    }
1636
1637    if (screenSize || o.screenSize) {
1638        if (screenWidth != o.screenWidth) {
1639            if (!screenWidth) return false;
1640            if (!o.screenWidth) return true;
1641        }
1642
1643        if (screenHeight != o.screenHeight) {
1644            if (!screenHeight) return false;
1645            if (!o.screenHeight) return true;
1646        }
1647    }
1648
1649    if (version || o.version) {
1650        if (sdkVersion != o.sdkVersion) {
1651            if (!sdkVersion) return false;
1652            if (!o.sdkVersion) return true;
1653        }
1654
1655        if (minorVersion != o.minorVersion) {
1656            if (!minorVersion) return false;
1657            if (!o.minorVersion) return true;
1658        }
1659    }
1660    return false;
1661}
1662
1663bool ResTable_config::isBetterThan(const ResTable_config& o,
1664        const ResTable_config* requested) const {
1665    if (requested) {
1666        if (imsi || o.imsi) {
1667            if ((mcc != o.mcc) && requested->mcc) {
1668                return (mcc);
1669            }
1670
1671            if ((mnc != o.mnc) && requested->mnc) {
1672                return (mnc);
1673            }
1674        }
1675
1676        if (locale || o.locale) {
1677            if ((language[0] != o.language[0]) && requested->language[0]) {
1678                return (language[0]);
1679            }
1680
1681            if ((country[0] != o.country[0]) && requested->country[0]) {
1682                return (country[0]);
1683            }
1684        }
1685
1686        if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1687            // The configuration closest to the actual size is best.
1688            // We assume that larger configs have already been filtered
1689            // out at this point.  That means we just want the largest one.
1690            if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1691                return smallestScreenWidthDp > o.smallestScreenWidthDp;
1692            }
1693        }
1694
1695        if (screenSizeDp || o.screenSizeDp) {
1696            // "Better" is based on the sum of the difference between both
1697            // width and height from the requested dimensions.  We are
1698            // assuming the invalid configs (with smaller dimens) have
1699            // already been filtered.  Note that if a particular dimension
1700            // is unspecified, we will end up with a large value (the
1701            // difference between 0 and the requested dimension), which is
1702            // good since we will prefer a config that has specified a
1703            // dimension value.
1704            int myDelta = 0, otherDelta = 0;
1705            if (requested->screenWidthDp) {
1706                myDelta += requested->screenWidthDp - screenWidthDp;
1707                otherDelta += requested->screenWidthDp - o.screenWidthDp;
1708            }
1709            if (requested->screenHeightDp) {
1710                myDelta += requested->screenHeightDp - screenHeightDp;
1711                otherDelta += requested->screenHeightDp - o.screenHeightDp;
1712            }
1713            //ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
1714            //    screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
1715            //    requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
1716            if (myDelta != otherDelta) {
1717                return myDelta < otherDelta;
1718            }
1719        }
1720
1721        if (screenLayout || o.screenLayout) {
1722            if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
1723                    && (requested->screenLayout & MASK_SCREENSIZE)) {
1724                // A little backwards compatibility here: undefined is
1725                // considered equivalent to normal.  But only if the
1726                // requested size is at least normal; otherwise, small
1727                // is better than the default.
1728                int mySL = (screenLayout & MASK_SCREENSIZE);
1729                int oSL = (o.screenLayout & MASK_SCREENSIZE);
1730                int fixedMySL = mySL;
1731                int fixedOSL = oSL;
1732                if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
1733                    if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
1734                    if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
1735                }
1736                // For screen size, the best match is the one that is
1737                // closest to the requested screen size, but not over
1738                // (the not over part is dealt with in match() below).
1739                if (fixedMySL == fixedOSL) {
1740                    // If the two are the same, but 'this' is actually
1741                    // undefined, then the other is really a better match.
1742                    if (mySL == 0) return false;
1743                    return true;
1744                }
1745                if (fixedMySL != fixedOSL) {
1746                    return fixedMySL > fixedOSL;
1747                }
1748            }
1749            if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
1750                    && (requested->screenLayout & MASK_SCREENLONG)) {
1751                return (screenLayout & MASK_SCREENLONG);
1752            }
1753        }
1754
1755        if ((orientation != o.orientation) && requested->orientation) {
1756            return (orientation);
1757        }
1758
1759        if (uiMode || o.uiMode) {
1760            if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
1761                    && (requested->uiMode & MASK_UI_MODE_TYPE)) {
1762                return (uiMode & MASK_UI_MODE_TYPE);
1763            }
1764            if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
1765                    && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
1766                return (uiMode & MASK_UI_MODE_NIGHT);
1767            }
1768        }
1769
1770        if (screenType || o.screenType) {
1771            if (density != o.density) {
1772                // density is tough.  Any density is potentially useful
1773                // because the system will scale it.  Scaling down
1774                // is generally better than scaling up.
1775                // Default density counts as 160dpi (the system default)
1776                // TODO - remove 160 constants
1777                int h = (density?density:160);
1778                int l = (o.density?o.density:160);
1779                bool bImBigger = true;
1780                if (l > h) {
1781                    int t = h;
1782                    h = l;
1783                    l = t;
1784                    bImBigger = false;
1785                }
1786
1787                int reqValue = (requested->density?requested->density:160);
1788                if (reqValue >= h) {
1789                    // requested value higher than both l and h, give h
1790                    return bImBigger;
1791                }
1792                if (l >= reqValue) {
1793                    // requested value lower than both l and h, give l
1794                    return !bImBigger;
1795                }
1796                // saying that scaling down is 2x better than up
1797                if (((2 * l) - reqValue) * h > reqValue * reqValue) {
1798                    return !bImBigger;
1799                } else {
1800                    return bImBigger;
1801                }
1802            }
1803
1804            if ((touchscreen != o.touchscreen) && requested->touchscreen) {
1805                return (touchscreen);
1806            }
1807        }
1808
1809        if (input || o.input) {
1810            const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
1811            const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
1812            if (keysHidden != oKeysHidden) {
1813                const int reqKeysHidden =
1814                        requested->inputFlags & MASK_KEYSHIDDEN;
1815                if (reqKeysHidden) {
1816
1817                    if (!keysHidden) return false;
1818                    if (!oKeysHidden) return true;
1819                    // For compatibility, we count KEYSHIDDEN_NO as being
1820                    // the same as KEYSHIDDEN_SOFT.  Here we disambiguate
1821                    // these by making an exact match more specific.
1822                    if (reqKeysHidden == keysHidden) return true;
1823                    if (reqKeysHidden == oKeysHidden) return false;
1824                }
1825            }
1826
1827            const int navHidden = inputFlags & MASK_NAVHIDDEN;
1828            const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
1829            if (navHidden != oNavHidden) {
1830                const int reqNavHidden =
1831                        requested->inputFlags & MASK_NAVHIDDEN;
1832                if (reqNavHidden) {
1833
1834                    if (!navHidden) return false;
1835                    if (!oNavHidden) return true;
1836                }
1837            }
1838
1839            if ((keyboard != o.keyboard) && requested->keyboard) {
1840                return (keyboard);
1841            }
1842
1843            if ((navigation != o.navigation) && requested->navigation) {
1844                return (navigation);
1845            }
1846        }
1847
1848        if (screenSize || o.screenSize) {
1849            // "Better" is based on the sum of the difference between both
1850            // width and height from the requested dimensions.  We are
1851            // assuming the invalid configs (with smaller sizes) have
1852            // already been filtered.  Note that if a particular dimension
1853            // is unspecified, we will end up with a large value (the
1854            // difference between 0 and the requested dimension), which is
1855            // good since we will prefer a config that has specified a
1856            // size value.
1857            int myDelta = 0, otherDelta = 0;
1858            if (requested->screenWidth) {
1859                myDelta += requested->screenWidth - screenWidth;
1860                otherDelta += requested->screenWidth - o.screenWidth;
1861            }
1862            if (requested->screenHeight) {
1863                myDelta += requested->screenHeight - screenHeight;
1864                otherDelta += requested->screenHeight - o.screenHeight;
1865            }
1866            if (myDelta != otherDelta) {
1867                return myDelta < otherDelta;
1868            }
1869        }
1870
1871        if (version || o.version) {
1872            if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
1873                return (sdkVersion > o.sdkVersion);
1874            }
1875
1876            if ((minorVersion != o.minorVersion) &&
1877                    requested->minorVersion) {
1878                return (minorVersion);
1879            }
1880        }
1881
1882        return false;
1883    }
1884    return isMoreSpecificThan(o);
1885}
1886
1887bool ResTable_config::match(const ResTable_config& settings) const {
1888    if (imsi != 0) {
1889        if (mcc != 0 && mcc != settings.mcc) {
1890            return false;
1891        }
1892        if (mnc != 0 && mnc != settings.mnc) {
1893            return false;
1894        }
1895    }
1896    if (locale != 0) {
1897        if (language[0] != 0
1898            && (language[0] != settings.language[0]
1899                || language[1] != settings.language[1])) {
1900            return false;
1901        }
1902        if (country[0] != 0
1903            && (country[0] != settings.country[0]
1904                || country[1] != settings.country[1])) {
1905            return false;
1906        }
1907    }
1908    if (screenConfig != 0) {
1909        const int screenSize = screenLayout&MASK_SCREENSIZE;
1910        const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
1911        // Any screen sizes for larger screens than the setting do not
1912        // match.
1913        if (screenSize != 0 && screenSize > setScreenSize) {
1914            return false;
1915        }
1916
1917        const int screenLong = screenLayout&MASK_SCREENLONG;
1918        const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
1919        if (screenLong != 0 && screenLong != setScreenLong) {
1920            return false;
1921        }
1922
1923        const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
1924        const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
1925        if (uiModeType != 0 && uiModeType != setUiModeType) {
1926            return false;
1927        }
1928
1929        const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
1930        const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
1931        if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
1932            return false;
1933        }
1934
1935        if (smallestScreenWidthDp != 0
1936                && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
1937            return false;
1938        }
1939    }
1940    if (screenSizeDp != 0) {
1941        if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
1942            //ALOGI("Filtering out width %d in requested %d", screenWidthDp, settings.screenWidthDp);
1943            return false;
1944        }
1945        if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
1946            //ALOGI("Filtering out height %d in requested %d", screenHeightDp, settings.screenHeightDp);
1947            return false;
1948        }
1949    }
1950    if (screenType != 0) {
1951        if (orientation != 0 && orientation != settings.orientation) {
1952            return false;
1953        }
1954        // density always matches - we can scale it.  See isBetterThan
1955        if (touchscreen != 0 && touchscreen != settings.touchscreen) {
1956            return false;
1957        }
1958    }
1959    if (input != 0) {
1960        const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
1961        const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
1962        if (keysHidden != 0 && keysHidden != setKeysHidden) {
1963            // For compatibility, we count a request for KEYSHIDDEN_NO as also
1964            // matching the more recent KEYSHIDDEN_SOFT.  Basically
1965            // KEYSHIDDEN_NO means there is some kind of keyboard available.
1966            //ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
1967            if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
1968                //ALOGI("No match!");
1969                return false;
1970            }
1971        }
1972        const int navHidden = inputFlags&MASK_NAVHIDDEN;
1973        const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
1974        if (navHidden != 0 && navHidden != setNavHidden) {
1975            return false;
1976        }
1977        if (keyboard != 0 && keyboard != settings.keyboard) {
1978            return false;
1979        }
1980        if (navigation != 0 && navigation != settings.navigation) {
1981            return false;
1982        }
1983    }
1984    if (screenSize != 0) {
1985        if (screenWidth != 0 && screenWidth > settings.screenWidth) {
1986            return false;
1987        }
1988        if (screenHeight != 0 && screenHeight > settings.screenHeight) {
1989            return false;
1990        }
1991    }
1992    if (version != 0) {
1993        if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
1994            return false;
1995        }
1996        if (minorVersion != 0 && minorVersion != settings.minorVersion) {
1997            return false;
1998        }
1999    }
2000    return true;
2001}
2002
2003void ResTable_config::getLocale(char str[6]) const {
2004    memset(str, 0, 6);
2005    if (language[0]) {
2006        str[0] = language[0];
2007        str[1] = language[1];
2008        if (country[0]) {
2009            str[2] = '_';
2010            str[3] = country[0];
2011            str[4] = country[1];
2012        }
2013    }
2014}
2015
2016String8 ResTable_config::toString() const {
2017    String8 res;
2018
2019    if (mcc != 0) {
2020        if (res.size() > 0) res.append("-");
2021        res.appendFormat("%dmcc", dtohs(mcc));
2022    }
2023    if (mnc != 0) {
2024        if (res.size() > 0) res.append("-");
2025        res.appendFormat("%dmnc", dtohs(mnc));
2026    }
2027    if (language[0] != 0) {
2028        if (res.size() > 0) res.append("-");
2029        res.append(language, 2);
2030    }
2031    if (country[0] != 0) {
2032        if (res.size() > 0) res.append("-");
2033        res.append(country, 2);
2034    }
2035    if (smallestScreenWidthDp != 0) {
2036        if (res.size() > 0) res.append("-");
2037        res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2038    }
2039    if (screenWidthDp != 0) {
2040        if (res.size() > 0) res.append("-");
2041        res.appendFormat("w%ddp", dtohs(screenWidthDp));
2042    }
2043    if (screenHeightDp != 0) {
2044        if (res.size() > 0) res.append("-");
2045        res.appendFormat("h%ddp", dtohs(screenHeightDp));
2046    }
2047    if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2048        if (res.size() > 0) res.append("-");
2049        switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2050            case ResTable_config::SCREENSIZE_SMALL:
2051                res.append("small");
2052                break;
2053            case ResTable_config::SCREENSIZE_NORMAL:
2054                res.append("normal");
2055                break;
2056            case ResTable_config::SCREENSIZE_LARGE:
2057                res.append("large");
2058                break;
2059            case ResTable_config::SCREENSIZE_XLARGE:
2060                res.append("xlarge");
2061                break;
2062            default:
2063                res.appendFormat("screenLayoutSize=%d",
2064                        dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2065                break;
2066        }
2067    }
2068    if ((screenLayout&MASK_SCREENLONG) != 0) {
2069        if (res.size() > 0) res.append("-");
2070        switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2071            case ResTable_config::SCREENLONG_NO:
2072                res.append("notlong");
2073                break;
2074            case ResTable_config::SCREENLONG_YES:
2075                res.append("long");
2076                break;
2077            default:
2078                res.appendFormat("screenLayoutLong=%d",
2079                        dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2080                break;
2081        }
2082    }
2083    if (orientation != ORIENTATION_ANY) {
2084        if (res.size() > 0) res.append("-");
2085        switch (orientation) {
2086            case ResTable_config::ORIENTATION_PORT:
2087                res.append("port");
2088                break;
2089            case ResTable_config::ORIENTATION_LAND:
2090                res.append("land");
2091                break;
2092            case ResTable_config::ORIENTATION_SQUARE:
2093                res.append("square");
2094                break;
2095            default:
2096                res.appendFormat("orientation=%d", dtohs(orientation));
2097                break;
2098        }
2099    }
2100    if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2101        if (res.size() > 0) res.append("-");
2102        switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2103            case ResTable_config::UI_MODE_TYPE_DESK:
2104                res.append("desk");
2105                break;
2106            case ResTable_config::UI_MODE_TYPE_CAR:
2107                res.append("car");
2108                break;
2109            case ResTable_config::UI_MODE_TYPE_TELEVISION:
2110                res.append("television");
2111                break;
2112            case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2113                res.append("appliance");
2114                break;
2115            default:
2116                res.appendFormat("uiModeType=%d",
2117                        dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2118                break;
2119        }
2120    }
2121    if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2122        if (res.size() > 0) res.append("-");
2123        switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2124            case ResTable_config::UI_MODE_NIGHT_NO:
2125                res.append("notnight");
2126                break;
2127            case ResTable_config::UI_MODE_NIGHT_YES:
2128                res.append("night");
2129                break;
2130            default:
2131                res.appendFormat("uiModeNight=%d",
2132                        dtohs(uiMode&MASK_UI_MODE_NIGHT));
2133                break;
2134        }
2135    }
2136    if (density != DENSITY_DEFAULT) {
2137        if (res.size() > 0) res.append("-");
2138        switch (density) {
2139            case ResTable_config::DENSITY_LOW:
2140                res.append("ldpi");
2141                break;
2142            case ResTable_config::DENSITY_MEDIUM:
2143                res.append("mdpi");
2144                break;
2145            case ResTable_config::DENSITY_TV:
2146                res.append("tvdpi");
2147                break;
2148            case ResTable_config::DENSITY_HIGH:
2149                res.append("hdpi");
2150                break;
2151            case ResTable_config::DENSITY_XHIGH:
2152                res.append("xhdpi");
2153                break;
2154            case ResTable_config::DENSITY_XXHIGH:
2155                res.append("xxhdpi");
2156                break;
2157            case ResTable_config::DENSITY_NONE:
2158                res.append("nodpi");
2159                break;
2160            default:
2161                res.appendFormat("%ddpi", dtohs(density));
2162                break;
2163        }
2164    }
2165    if (touchscreen != TOUCHSCREEN_ANY) {
2166        if (res.size() > 0) res.append("-");
2167        switch (touchscreen) {
2168            case ResTable_config::TOUCHSCREEN_NOTOUCH:
2169                res.append("notouch");
2170                break;
2171            case ResTable_config::TOUCHSCREEN_FINGER:
2172                res.append("finger");
2173                break;
2174            case ResTable_config::TOUCHSCREEN_STYLUS:
2175                res.append("stylus");
2176                break;
2177            default:
2178                res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2179                break;
2180        }
2181    }
2182    if (keyboard != KEYBOARD_ANY) {
2183        if (res.size() > 0) res.append("-");
2184        switch (keyboard) {
2185            case ResTable_config::KEYBOARD_NOKEYS:
2186                res.append("nokeys");
2187                break;
2188            case ResTable_config::KEYBOARD_QWERTY:
2189                res.append("qwerty");
2190                break;
2191            case ResTable_config::KEYBOARD_12KEY:
2192                res.append("12key");
2193                break;
2194            default:
2195                res.appendFormat("keyboard=%d", dtohs(keyboard));
2196                break;
2197        }
2198    }
2199    if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2200        if (res.size() > 0) res.append("-");
2201        switch (inputFlags&MASK_KEYSHIDDEN) {
2202            case ResTable_config::KEYSHIDDEN_NO:
2203                res.append("keysexposed");
2204                break;
2205            case ResTable_config::KEYSHIDDEN_YES:
2206                res.append("keyshidden");
2207                break;
2208            case ResTable_config::KEYSHIDDEN_SOFT:
2209                res.append("keyssoft");
2210                break;
2211        }
2212    }
2213    if (navigation != NAVIGATION_ANY) {
2214        if (res.size() > 0) res.append("-");
2215        switch (navigation) {
2216            case ResTable_config::NAVIGATION_NONAV:
2217                res.append("nonav");
2218                break;
2219            case ResTable_config::NAVIGATION_DPAD:
2220                res.append("dpad");
2221                break;
2222            case ResTable_config::NAVIGATION_TRACKBALL:
2223                res.append("trackball");
2224                break;
2225            case ResTable_config::NAVIGATION_WHEEL:
2226                res.append("wheel");
2227                break;
2228            default:
2229                res.appendFormat("navigation=%d", dtohs(navigation));
2230                break;
2231        }
2232    }
2233    if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2234        if (res.size() > 0) res.append("-");
2235        switch (inputFlags&MASK_NAVHIDDEN) {
2236            case ResTable_config::NAVHIDDEN_NO:
2237                res.append("navsexposed");
2238                break;
2239            case ResTable_config::NAVHIDDEN_YES:
2240                res.append("navhidden");
2241                break;
2242            default:
2243                res.appendFormat("inputFlagsNavHidden=%d",
2244                        dtohs(inputFlags&MASK_NAVHIDDEN));
2245                break;
2246        }
2247    }
2248    if (screenSize != 0) {
2249        if (res.size() > 0) res.append("-");
2250        res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2251    }
2252    if (version != 0) {
2253        if (res.size() > 0) res.append("-");
2254        res.appendFormat("v%d", dtohs(sdkVersion));
2255        if (minorVersion != 0) {
2256            res.appendFormat(".%d", dtohs(minorVersion));
2257        }
2258    }
2259
2260    return res;
2261}
2262
2263// --------------------------------------------------------------------
2264// --------------------------------------------------------------------
2265// --------------------------------------------------------------------
2266
2267struct ResTable::Header
2268{
2269    Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
2270        resourceIDMap(NULL), resourceIDMapSize(0) { }
2271
2272    ~Header()
2273    {
2274        free(resourceIDMap);
2275    }
2276
2277    ResTable* const                 owner;
2278    void*                           ownedData;
2279    const ResTable_header*          header;
2280    size_t                          size;
2281    const uint8_t*                  dataEnd;
2282    size_t                          index;
2283    void*                           cookie;
2284
2285    ResStringPool                   values;
2286    uint32_t*                       resourceIDMap;
2287    size_t                          resourceIDMapSize;
2288};
2289
2290struct ResTable::Type
2291{
2292    Type(const Header* _header, const Package* _package, size_t count)
2293        : header(_header), package(_package), entryCount(count),
2294          typeSpec(NULL), typeSpecFlags(NULL) { }
2295    const Header* const             header;
2296    const Package* const            package;
2297    const size_t                    entryCount;
2298    const ResTable_typeSpec*        typeSpec;
2299    const uint32_t*                 typeSpecFlags;
2300    Vector<const ResTable_type*>    configs;
2301};
2302
2303struct ResTable::Package
2304{
2305    Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
2306        : owner(_owner), header(_header), package(_package) { }
2307    ~Package()
2308    {
2309        size_t i = types.size();
2310        while (i > 0) {
2311            i--;
2312            delete types[i];
2313        }
2314    }
2315
2316    ResTable* const                 owner;
2317    const Header* const             header;
2318    const ResTable_package* const   package;
2319    Vector<Type*>                   types;
2320
2321    ResStringPool                   typeStrings;
2322    ResStringPool                   keyStrings;
2323
2324    const Type* getType(size_t idx) const {
2325        return idx < types.size() ? types[idx] : NULL;
2326    }
2327};
2328
2329// A group of objects describing a particular resource package.
2330// The first in 'package' is always the root object (from the resource
2331// table that defined the package); the ones after are skins on top of it.
2332struct ResTable::PackageGroup
2333{
2334    PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
2335        : owner(_owner), name(_name), id(_id), typeCount(0), bags(NULL) { }
2336    ~PackageGroup() {
2337        clearBagCache();
2338        const size_t N = packages.size();
2339        for (size_t i=0; i<N; i++) {
2340            Package* pkg = packages[i];
2341            if (pkg->owner == owner) {
2342                delete pkg;
2343            }
2344        }
2345    }
2346
2347    void clearBagCache() {
2348        if (bags) {
2349            TABLE_NOISY(printf("bags=%p\n", bags));
2350            Package* pkg = packages[0];
2351            TABLE_NOISY(printf("typeCount=%x\n", typeCount));
2352            for (size_t i=0; i<typeCount; i++) {
2353                TABLE_NOISY(printf("type=%d\n", i));
2354                const Type* type = pkg->getType(i);
2355                if (type != NULL) {
2356                    bag_set** typeBags = bags[i];
2357                    TABLE_NOISY(printf("typeBags=%p\n", typeBags));
2358                    if (typeBags) {
2359                        TABLE_NOISY(printf("type->entryCount=%x\n", type->entryCount));
2360                        const size_t N = type->entryCount;
2361                        for (size_t j=0; j<N; j++) {
2362                            if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
2363                                free(typeBags[j]);
2364                        }
2365                        free(typeBags);
2366                    }
2367                }
2368            }
2369            free(bags);
2370            bags = NULL;
2371        }
2372    }
2373
2374    ResTable* const                 owner;
2375    String16 const                  name;
2376    uint32_t const                  id;
2377    Vector<Package*>                packages;
2378
2379    // This is for finding typeStrings and other common package stuff.
2380    Package*                        basePackage;
2381
2382    // For quick access.
2383    size_t                          typeCount;
2384
2385    // Computed attribute bags, first indexed by the type and second
2386    // by the entry in that type.
2387    bag_set***                      bags;
2388};
2389
2390struct ResTable::bag_set
2391{
2392    size_t numAttrs;    // number in array
2393    size_t availAttrs;  // total space in array
2394    uint32_t typeSpecFlags;
2395    // Followed by 'numAttr' bag_entry structures.
2396};
2397
2398ResTable::Theme::Theme(const ResTable& table)
2399    : mTable(table)
2400{
2401    memset(mPackages, 0, sizeof(mPackages));
2402}
2403
2404ResTable::Theme::~Theme()
2405{
2406    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2407        package_info* pi = mPackages[i];
2408        if (pi != NULL) {
2409            free_package(pi);
2410        }
2411    }
2412}
2413
2414void ResTable::Theme::free_package(package_info* pi)
2415{
2416    for (size_t j=0; j<pi->numTypes; j++) {
2417        theme_entry* te = pi->types[j].entries;
2418        if (te != NULL) {
2419            free(te);
2420        }
2421    }
2422    free(pi);
2423}
2424
2425ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
2426{
2427    package_info* newpi = (package_info*)malloc(
2428        sizeof(package_info) + (pi->numTypes*sizeof(type_info)));
2429    newpi->numTypes = pi->numTypes;
2430    for (size_t j=0; j<newpi->numTypes; j++) {
2431        size_t cnt = pi->types[j].numEntries;
2432        newpi->types[j].numEntries = cnt;
2433        theme_entry* te = pi->types[j].entries;
2434        if (te != NULL) {
2435            theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
2436            newpi->types[j].entries = newte;
2437            memcpy(newte, te, cnt*sizeof(theme_entry));
2438        } else {
2439            newpi->types[j].entries = NULL;
2440        }
2441    }
2442    return newpi;
2443}
2444
2445status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
2446{
2447    const bag_entry* bag;
2448    uint32_t bagTypeSpecFlags = 0;
2449    mTable.lock();
2450    const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
2451    TABLE_NOISY(ALOGV("Applying style 0x%08x to theme %p, count=%d", resID, this, N));
2452    if (N < 0) {
2453        mTable.unlock();
2454        return N;
2455    }
2456
2457    uint32_t curPackage = 0xffffffff;
2458    ssize_t curPackageIndex = 0;
2459    package_info* curPI = NULL;
2460    uint32_t curType = 0xffffffff;
2461    size_t numEntries = 0;
2462    theme_entry* curEntries = NULL;
2463
2464    const bag_entry* end = bag + N;
2465    while (bag < end) {
2466        const uint32_t attrRes = bag->map.name.ident;
2467        const uint32_t p = Res_GETPACKAGE(attrRes);
2468        const uint32_t t = Res_GETTYPE(attrRes);
2469        const uint32_t e = Res_GETENTRY(attrRes);
2470
2471        if (curPackage != p) {
2472            const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
2473            if (pidx < 0) {
2474                ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
2475                bag++;
2476                continue;
2477            }
2478            curPackage = p;
2479            curPackageIndex = pidx;
2480            curPI = mPackages[pidx];
2481            if (curPI == NULL) {
2482                PackageGroup* const grp = mTable.mPackageGroups[pidx];
2483                int cnt = grp->typeCount;
2484                curPI = (package_info*)malloc(
2485                    sizeof(package_info) + (cnt*sizeof(type_info)));
2486                curPI->numTypes = cnt;
2487                memset(curPI->types, 0, cnt*sizeof(type_info));
2488                mPackages[pidx] = curPI;
2489            }
2490            curType = 0xffffffff;
2491        }
2492        if (curType != t) {
2493            if (t >= curPI->numTypes) {
2494                ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
2495                bag++;
2496                continue;
2497            }
2498            curType = t;
2499            curEntries = curPI->types[t].entries;
2500            if (curEntries == NULL) {
2501                PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
2502                const Type* type = grp->packages[0]->getType(t);
2503                int cnt = type != NULL ? type->entryCount : 0;
2504                curEntries = (theme_entry*)malloc(cnt*sizeof(theme_entry));
2505                memset(curEntries, Res_value::TYPE_NULL, cnt*sizeof(theme_entry));
2506                curPI->types[t].numEntries = cnt;
2507                curPI->types[t].entries = curEntries;
2508            }
2509            numEntries = curPI->types[t].numEntries;
2510        }
2511        if (e >= numEntries) {
2512            ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
2513            bag++;
2514            continue;
2515        }
2516        theme_entry* curEntry = curEntries + e;
2517        TABLE_NOISY(ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
2518                   attrRes, bag->map.value.dataType, bag->map.value.data,
2519             curEntry->value.dataType));
2520        if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
2521            curEntry->stringBlock = bag->stringBlock;
2522            curEntry->typeSpecFlags |= bagTypeSpecFlags;
2523            curEntry->value = bag->map.value;
2524        }
2525
2526        bag++;
2527    }
2528
2529    mTable.unlock();
2530
2531    //ALOGI("Applying style 0x%08x (force=%d)  theme %p...\n", resID, force, this);
2532    //dumpToLog();
2533
2534    return NO_ERROR;
2535}
2536
2537status_t ResTable::Theme::setTo(const Theme& other)
2538{
2539    //ALOGI("Setting theme %p from theme %p...\n", this, &other);
2540    //dumpToLog();
2541    //other.dumpToLog();
2542
2543    if (&mTable == &other.mTable) {
2544        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2545            if (mPackages[i] != NULL) {
2546                free_package(mPackages[i]);
2547            }
2548            if (other.mPackages[i] != NULL) {
2549                mPackages[i] = copy_package(other.mPackages[i]);
2550            } else {
2551                mPackages[i] = NULL;
2552            }
2553        }
2554    } else {
2555        // @todo: need to really implement this, not just copy
2556        // the system package (which is still wrong because it isn't
2557        // fixing up resource references).
2558        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2559            if (mPackages[i] != NULL) {
2560                free_package(mPackages[i]);
2561            }
2562            if (i == 0 && other.mPackages[i] != NULL) {
2563                mPackages[i] = copy_package(other.mPackages[i]);
2564            } else {
2565                mPackages[i] = NULL;
2566            }
2567        }
2568    }
2569
2570    //ALOGI("Final theme:");
2571    //dumpToLog();
2572
2573    return NO_ERROR;
2574}
2575
2576ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
2577        uint32_t* outTypeSpecFlags) const
2578{
2579    int cnt = 20;
2580
2581    if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
2582
2583    do {
2584        const ssize_t p = mTable.getResourcePackageIndex(resID);
2585        const uint32_t t = Res_GETTYPE(resID);
2586        const uint32_t e = Res_GETENTRY(resID);
2587
2588        TABLE_THEME(ALOGI("Looking up attr 0x%08x in theme %p", resID, this));
2589
2590        if (p >= 0) {
2591            const package_info* const pi = mPackages[p];
2592            TABLE_THEME(ALOGI("Found package: %p", pi));
2593            if (pi != NULL) {
2594                TABLE_THEME(ALOGI("Desired type index is %ld in avail %d", t, pi->numTypes));
2595                if (t < pi->numTypes) {
2596                    const type_info& ti = pi->types[t];
2597                    TABLE_THEME(ALOGI("Desired entry index is %ld in avail %d", e, ti.numEntries));
2598                    if (e < ti.numEntries) {
2599                        const theme_entry& te = ti.entries[e];
2600                        if (outTypeSpecFlags != NULL) {
2601                            *outTypeSpecFlags |= te.typeSpecFlags;
2602                        }
2603                        TABLE_THEME(ALOGI("Theme value: type=0x%x, data=0x%08x",
2604                                te.value.dataType, te.value.data));
2605                        const uint8_t type = te.value.dataType;
2606                        if (type == Res_value::TYPE_ATTRIBUTE) {
2607                            if (cnt > 0) {
2608                                cnt--;
2609                                resID = te.value.data;
2610                                continue;
2611                            }
2612                            ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
2613                            return BAD_INDEX;
2614                        } else if (type != Res_value::TYPE_NULL) {
2615                            *outValue = te.value;
2616                            return te.stringBlock;
2617                        }
2618                        return BAD_INDEX;
2619                    }
2620                }
2621            }
2622        }
2623        break;
2624
2625    } while (true);
2626
2627    return BAD_INDEX;
2628}
2629
2630ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
2631        ssize_t blockIndex, uint32_t* outLastRef,
2632        uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
2633{
2634    //printf("Resolving type=0x%x\n", inOutValue->dataType);
2635    if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
2636        uint32_t newTypeSpecFlags;
2637        blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
2638        TABLE_THEME(ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=%p\n",
2639             (int)blockIndex, (int)inOutValue->dataType, (void*)inOutValue->data));
2640        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
2641        //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
2642        if (blockIndex < 0) {
2643            return blockIndex;
2644        }
2645    }
2646    return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
2647            inoutTypeSpecFlags, inoutConfig);
2648}
2649
2650void ResTable::Theme::dumpToLog() const
2651{
2652    ALOGI("Theme %p:\n", this);
2653    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2654        package_info* pi = mPackages[i];
2655        if (pi == NULL) continue;
2656
2657        ALOGI("  Package #0x%02x:\n", (int)(i+1));
2658        for (size_t j=0; j<pi->numTypes; j++) {
2659            type_info& ti = pi->types[j];
2660            if (ti.numEntries == 0) continue;
2661
2662            ALOGI("    Type #0x%02x:\n", (int)(j+1));
2663            for (size_t k=0; k<ti.numEntries; k++) {
2664                theme_entry& te = ti.entries[k];
2665                if (te.value.dataType == Res_value::TYPE_NULL) continue;
2666                ALOGI("      0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
2667                     (int)Res_MAKEID(i, j, k),
2668                     te.value.dataType, (int)te.value.data, (int)te.stringBlock);
2669            }
2670        }
2671    }
2672}
2673
2674ResTable::ResTable()
2675    : mError(NO_INIT)
2676{
2677    memset(&mParams, 0, sizeof(mParams));
2678    memset(mPackageMap, 0, sizeof(mPackageMap));
2679    //ALOGI("Creating ResTable %p\n", this);
2680}
2681
2682ResTable::ResTable(const void* data, size_t size, void* cookie, bool copyData)
2683    : mError(NO_INIT)
2684{
2685    memset(&mParams, 0, sizeof(mParams));
2686    memset(mPackageMap, 0, sizeof(mPackageMap));
2687    add(data, size, cookie, copyData);
2688    LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
2689    //ALOGI("Creating ResTable %p\n", this);
2690}
2691
2692ResTable::~ResTable()
2693{
2694    //ALOGI("Destroying ResTable in %p\n", this);
2695    uninit();
2696}
2697
2698inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
2699{
2700    return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
2701}
2702
2703status_t ResTable::add(const void* data, size_t size, void* cookie, bool copyData,
2704                       const void* idmap)
2705{
2706    return add(data, size, cookie, NULL, copyData, reinterpret_cast<const Asset*>(idmap));
2707}
2708
2709status_t ResTable::add(Asset* asset, void* cookie, bool copyData, const void* idmap)
2710{
2711    const void* data = asset->getBuffer(true);
2712    if (data == NULL) {
2713        ALOGW("Unable to get buffer of resource asset file");
2714        return UNKNOWN_ERROR;
2715    }
2716    size_t size = (size_t)asset->getLength();
2717    return add(data, size, cookie, asset, copyData, reinterpret_cast<const Asset*>(idmap));
2718}
2719
2720status_t ResTable::add(ResTable* src)
2721{
2722    mError = src->mError;
2723
2724    for (size_t i=0; i<src->mHeaders.size(); i++) {
2725        mHeaders.add(src->mHeaders[i]);
2726    }
2727
2728    for (size_t i=0; i<src->mPackageGroups.size(); i++) {
2729        PackageGroup* srcPg = src->mPackageGroups[i];
2730        PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
2731        for (size_t j=0; j<srcPg->packages.size(); j++) {
2732            pg->packages.add(srcPg->packages[j]);
2733        }
2734        pg->basePackage = srcPg->basePackage;
2735        pg->typeCount = srcPg->typeCount;
2736        mPackageGroups.add(pg);
2737    }
2738
2739    memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
2740
2741    return mError;
2742}
2743
2744status_t ResTable::add(const void* data, size_t size, void* cookie,
2745                       Asset* asset, bool copyData, const Asset* idmap)
2746{
2747    if (!data) return NO_ERROR;
2748    Header* header = new Header(this);
2749    header->index = mHeaders.size();
2750    header->cookie = cookie;
2751    if (idmap != NULL) {
2752        const size_t idmap_size = idmap->getLength();
2753        const void* idmap_data = const_cast<Asset*>(idmap)->getBuffer(true);
2754        header->resourceIDMap = (uint32_t*)malloc(idmap_size);
2755        if (header->resourceIDMap == NULL) {
2756            delete header;
2757            return (mError = NO_MEMORY);
2758        }
2759        memcpy((void*)header->resourceIDMap, idmap_data, idmap_size);
2760        header->resourceIDMapSize = idmap_size;
2761    }
2762    mHeaders.add(header);
2763
2764    const bool notDeviceEndian = htods(0xf0) != 0xf0;
2765
2766    LOAD_TABLE_NOISY(
2767        ALOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%p, asset=%p, copy=%d "
2768             "idmap=%p\n", data, size, cookie, asset, copyData, idmap));
2769
2770    if (copyData || notDeviceEndian) {
2771        header->ownedData = malloc(size);
2772        if (header->ownedData == NULL) {
2773            return (mError=NO_MEMORY);
2774        }
2775        memcpy(header->ownedData, data, size);
2776        data = header->ownedData;
2777    }
2778
2779    header->header = (const ResTable_header*)data;
2780    header->size = dtohl(header->header->header.size);
2781    //ALOGI("Got size 0x%x, again size 0x%x, raw size 0x%x\n", header->size,
2782    //     dtohl(header->header->header.size), header->header->header.size);
2783    LOAD_TABLE_NOISY(ALOGV("Loading ResTable @%p:\n", header->header));
2784    LOAD_TABLE_NOISY(printHexData(2, header->header, header->size < 256 ? header->size : 256,
2785                                  16, 16, 0, false, printToLogFunc));
2786    if (dtohs(header->header->header.headerSize) > header->size
2787            || header->size > size) {
2788        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
2789             (int)dtohs(header->header->header.headerSize),
2790             (int)header->size, (int)size);
2791        return (mError=BAD_TYPE);
2792    }
2793    if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
2794        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
2795             (int)dtohs(header->header->header.headerSize),
2796             (int)header->size);
2797        return (mError=BAD_TYPE);
2798    }
2799    header->dataEnd = ((const uint8_t*)header->header) + header->size;
2800
2801    // Iterate through all chunks.
2802    size_t curPackage = 0;
2803
2804    const ResChunk_header* chunk =
2805        (const ResChunk_header*)(((const uint8_t*)header->header)
2806                                 + dtohs(header->header->header.headerSize));
2807    while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
2808           ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
2809        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
2810        if (err != NO_ERROR) {
2811            return (mError=err);
2812        }
2813        TABLE_NOISY(ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
2814                     dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
2815                     (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
2816        const size_t csize = dtohl(chunk->size);
2817        const uint16_t ctype = dtohs(chunk->type);
2818        if (ctype == RES_STRING_POOL_TYPE) {
2819            if (header->values.getError() != NO_ERROR) {
2820                // Only use the first string chunk; ignore any others that
2821                // may appear.
2822                status_t err = header->values.setTo(chunk, csize);
2823                if (err != NO_ERROR) {
2824                    return (mError=err);
2825                }
2826            } else {
2827                ALOGW("Multiple string chunks found in resource table.");
2828            }
2829        } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
2830            if (curPackage >= dtohl(header->header->packageCount)) {
2831                ALOGW("More package chunks were found than the %d declared in the header.",
2832                     dtohl(header->header->packageCount));
2833                return (mError=BAD_TYPE);
2834            }
2835            uint32_t idmap_id = 0;
2836            if (idmap != NULL) {
2837                uint32_t tmp;
2838                if (getIdmapPackageId(header->resourceIDMap,
2839                                      header->resourceIDMapSize,
2840                                      &tmp) == NO_ERROR) {
2841                    idmap_id = tmp;
2842                }
2843            }
2844            if (parsePackage((ResTable_package*)chunk, header, idmap_id) != NO_ERROR) {
2845                return mError;
2846            }
2847            curPackage++;
2848        } else {
2849            ALOGW("Unknown chunk type %p in table at %p.\n",
2850                 (void*)(int)(ctype),
2851                 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
2852        }
2853        chunk = (const ResChunk_header*)
2854            (((const uint8_t*)chunk) + csize);
2855    }
2856
2857    if (curPackage < dtohl(header->header->packageCount)) {
2858        ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
2859             (int)curPackage, dtohl(header->header->packageCount));
2860        return (mError=BAD_TYPE);
2861    }
2862    mError = header->values.getError();
2863    if (mError != NO_ERROR) {
2864        ALOGW("No string values found in resource table!");
2865    }
2866
2867    TABLE_NOISY(ALOGV("Returning from add with mError=%d\n", mError));
2868    return mError;
2869}
2870
2871status_t ResTable::getError() const
2872{
2873    return mError;
2874}
2875
2876void ResTable::uninit()
2877{
2878    mError = NO_INIT;
2879    size_t N = mPackageGroups.size();
2880    for (size_t i=0; i<N; i++) {
2881        PackageGroup* g = mPackageGroups[i];
2882        delete g;
2883    }
2884    N = mHeaders.size();
2885    for (size_t i=0; i<N; i++) {
2886        Header* header = mHeaders[i];
2887        if (header->owner == this) {
2888            if (header->ownedData) {
2889                free(header->ownedData);
2890            }
2891            delete header;
2892        }
2893    }
2894
2895    mPackageGroups.clear();
2896    mHeaders.clear();
2897}
2898
2899bool ResTable::getResourceName(uint32_t resID, resource_name* outName) const
2900{
2901    if (mError != NO_ERROR) {
2902        return false;
2903    }
2904
2905    const ssize_t p = getResourcePackageIndex(resID);
2906    const int t = Res_GETTYPE(resID);
2907    const int e = Res_GETENTRY(resID);
2908
2909    if (p < 0) {
2910        if (Res_GETPACKAGE(resID)+1 == 0) {
2911            ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
2912        } else {
2913            ALOGW("No known package when getting name for resource number 0x%08x", resID);
2914        }
2915        return false;
2916    }
2917    if (t < 0) {
2918        ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
2919        return false;
2920    }
2921
2922    const PackageGroup* const grp = mPackageGroups[p];
2923    if (grp == NULL) {
2924        ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
2925        return false;
2926    }
2927    if (grp->packages.size() > 0) {
2928        const Package* const package = grp->packages[0];
2929
2930        const ResTable_type* type;
2931        const ResTable_entry* entry;
2932        ssize_t offset = getEntry(package, t, e, NULL, &type, &entry, NULL);
2933        if (offset <= 0) {
2934            return false;
2935        }
2936
2937        outName->package = grp->name.string();
2938        outName->packageLen = grp->name.size();
2939        outName->type = grp->basePackage->typeStrings.stringAt(t, &outName->typeLen);
2940        outName->name = grp->basePackage->keyStrings.stringAt(
2941            dtohl(entry->key.index), &outName->nameLen);
2942
2943        // If we have a bad index for some reason, we should abort.
2944        if (outName->type == NULL || outName->name == NULL) {
2945            return false;
2946        }
2947
2948        return true;
2949    }
2950
2951    return false;
2952}
2953
2954ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
2955        uint32_t* outSpecFlags, ResTable_config* outConfig) const
2956{
2957    if (mError != NO_ERROR) {
2958        return mError;
2959    }
2960
2961    const ssize_t p = getResourcePackageIndex(resID);
2962    const int t = Res_GETTYPE(resID);
2963    const int e = Res_GETENTRY(resID);
2964
2965    if (p < 0) {
2966        if (Res_GETPACKAGE(resID)+1 == 0) {
2967            ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
2968        } else {
2969            ALOGW("No known package when getting value for resource number 0x%08x", resID);
2970        }
2971        return BAD_INDEX;
2972    }
2973    if (t < 0) {
2974        ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
2975        return BAD_INDEX;
2976    }
2977
2978    const Res_value* bestValue = NULL;
2979    const Package* bestPackage = NULL;
2980    ResTable_config bestItem;
2981    memset(&bestItem, 0, sizeof(bestItem)); // make the compiler shut up
2982
2983    if (outSpecFlags != NULL) *outSpecFlags = 0;
2984
2985    // Look through all resource packages, starting with the most
2986    // recently added.
2987    const PackageGroup* const grp = mPackageGroups[p];
2988    if (grp == NULL) {
2989        ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
2990        return BAD_INDEX;
2991    }
2992
2993    // Allow overriding density
2994    const ResTable_config* desiredConfig = &mParams;
2995    ResTable_config* overrideConfig = NULL;
2996    if (density > 0) {
2997        overrideConfig = (ResTable_config*) malloc(sizeof(ResTable_config));
2998        if (overrideConfig == NULL) {
2999            ALOGE("Couldn't malloc ResTable_config for overrides: %s", strerror(errno));
3000            return BAD_INDEX;
3001        }
3002        memcpy(overrideConfig, &mParams, sizeof(ResTable_config));
3003        overrideConfig->density = density;
3004        desiredConfig = overrideConfig;
3005    }
3006
3007    ssize_t rc = BAD_VALUE;
3008    size_t ip = grp->packages.size();
3009    while (ip > 0) {
3010        ip--;
3011        int T = t;
3012        int E = e;
3013
3014        const Package* const package = grp->packages[ip];
3015        if (package->header->resourceIDMap) {
3016            uint32_t overlayResID = 0x0;
3017            status_t retval = idmapLookup(package->header->resourceIDMap,
3018                                          package->header->resourceIDMapSize,
3019                                          resID, &overlayResID);
3020            if (retval == NO_ERROR && overlayResID != 0x0) {
3021                // for this loop iteration, this is the type and entry we really want
3022                ALOGV("resource map 0x%08x -> 0x%08x\n", resID, overlayResID);
3023                T = Res_GETTYPE(overlayResID);
3024                E = Res_GETENTRY(overlayResID);
3025            } else {
3026                // resource not present in overlay package, continue with the next package
3027                continue;
3028            }
3029        }
3030
3031        const ResTable_type* type;
3032        const ResTable_entry* entry;
3033        const Type* typeClass;
3034        ssize_t offset = getEntry(package, T, E, desiredConfig, &type, &entry, &typeClass);
3035        if (offset <= 0) {
3036            // No {entry, appropriate config} pair found in package. If this
3037            // package is an overlay package (ip != 0), this simply means the
3038            // overlay package did not specify a default.
3039            // Non-overlay packages are still required to provide a default.
3040            if (offset < 0 && ip == 0) {
3041                ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) in package %zd (error %d)\n",
3042                        resID, T, E, ip, (int)offset);
3043                rc = offset;
3044                goto out;
3045            }
3046            continue;
3047        }
3048
3049        if ((dtohs(entry->flags)&entry->FLAG_COMPLEX) != 0) {
3050            if (!mayBeBag) {
3051                ALOGW("Requesting resource %p failed because it is complex\n",
3052                     (void*)resID);
3053            }
3054            continue;
3055        }
3056
3057        TABLE_NOISY(aout << "Resource type data: "
3058              << HexDump(type, dtohl(type->header.size)) << endl);
3059
3060        if ((size_t)offset > (dtohl(type->header.size)-sizeof(Res_value))) {
3061            ALOGW("ResTable_item at %d is beyond type chunk data %d",
3062                 (int)offset, dtohl(type->header.size));
3063            rc = BAD_TYPE;
3064            goto out;
3065        }
3066
3067        const Res_value* item =
3068            (const Res_value*)(((const uint8_t*)type) + offset);
3069        ResTable_config thisConfig;
3070        thisConfig.copyFromDtoH(type->config);
3071
3072        if (outSpecFlags != NULL) {
3073            if (typeClass->typeSpecFlags != NULL) {
3074                *outSpecFlags |= dtohl(typeClass->typeSpecFlags[E]);
3075            } else {
3076                *outSpecFlags = -1;
3077            }
3078        }
3079
3080        if (bestPackage != NULL &&
3081            (bestItem.isMoreSpecificThan(thisConfig) || bestItem.diff(thisConfig) == 0)) {
3082            // Discard thisConfig not only if bestItem is more specific, but also if the two configs
3083            // are identical (diff == 0), or overlay packages will not take effect.
3084            continue;
3085        }
3086
3087        bestItem = thisConfig;
3088        bestValue = item;
3089        bestPackage = package;
3090    }
3091
3092    TABLE_NOISY(printf("Found result: package %p\n", bestPackage));
3093
3094    if (bestValue) {
3095        outValue->size = dtohs(bestValue->size);
3096        outValue->res0 = bestValue->res0;
3097        outValue->dataType = bestValue->dataType;
3098        outValue->data = dtohl(bestValue->data);
3099        if (outConfig != NULL) {
3100            *outConfig = bestItem;
3101        }
3102        TABLE_NOISY(size_t len;
3103              printf("Found value: pkg=%d, type=%d, str=%s, int=%d\n",
3104                     bestPackage->header->index,
3105                     outValue->dataType,
3106                     outValue->dataType == bestValue->TYPE_STRING
3107                     ? String8(bestPackage->header->values.stringAt(
3108                         outValue->data, &len)).string()
3109                     : "",
3110                     outValue->data));
3111        rc = bestPackage->header->index;
3112        goto out;
3113    }
3114
3115out:
3116    if (overrideConfig != NULL) {
3117        free(overrideConfig);
3118    }
3119
3120    return rc;
3121}
3122
3123ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3124        uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3125        ResTable_config* outConfig) const
3126{
3127    int count=0;
3128    while (blockIndex >= 0 && value->dataType == value->TYPE_REFERENCE
3129           && value->data != 0 && count < 20) {
3130        if (outLastRef) *outLastRef = value->data;
3131        uint32_t lastRef = value->data;
3132        uint32_t newFlags = 0;
3133        const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3134                outConfig);
3135        if (newIndex == BAD_INDEX) {
3136            return BAD_INDEX;
3137        }
3138        TABLE_THEME(ALOGI("Resolving reference %p: newIndex=%d, type=0x%x, data=%p\n",
3139             (void*)lastRef, (int)newIndex, (int)value->dataType, (void*)value->data));
3140        //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3141        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3142        if (newIndex < 0) {
3143            // This can fail if the resource being referenced is a style...
3144            // in this case, just return the reference, and expect the
3145            // caller to deal with.
3146            return blockIndex;
3147        }
3148        blockIndex = newIndex;
3149        count++;
3150    }
3151    return blockIndex;
3152}
3153
3154const char16_t* ResTable::valueToString(
3155    const Res_value* value, size_t stringBlock,
3156    char16_t tmpBuffer[TMP_BUFFER_SIZE], size_t* outLen)
3157{
3158    if (!value) {
3159        return NULL;
3160    }
3161    if (value->dataType == value->TYPE_STRING) {
3162        return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
3163    }
3164    // XXX do int to string conversions.
3165    return NULL;
3166}
3167
3168ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
3169{
3170    mLock.lock();
3171    ssize_t err = getBagLocked(resID, outBag);
3172    if (err < NO_ERROR) {
3173        //printf("*** get failed!  unlocking\n");
3174        mLock.unlock();
3175    }
3176    return err;
3177}
3178
3179void ResTable::unlockBag(const bag_entry* bag) const
3180{
3181    //printf("<<< unlockBag %p\n", this);
3182    mLock.unlock();
3183}
3184
3185void ResTable::lock() const
3186{
3187    mLock.lock();
3188}
3189
3190void ResTable::unlock() const
3191{
3192    mLock.unlock();
3193}
3194
3195ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
3196        uint32_t* outTypeSpecFlags) const
3197{
3198    if (mError != NO_ERROR) {
3199        return mError;
3200    }
3201
3202    const ssize_t p = getResourcePackageIndex(resID);
3203    const int t = Res_GETTYPE(resID);
3204    const int e = Res_GETENTRY(resID);
3205
3206    if (p < 0) {
3207        ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
3208        return BAD_INDEX;
3209    }
3210    if (t < 0) {
3211        ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
3212        return BAD_INDEX;
3213    }
3214
3215    //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
3216    PackageGroup* const grp = mPackageGroups[p];
3217    if (grp == NULL) {
3218        ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
3219        return false;
3220    }
3221
3222    if (t >= (int)grp->typeCount) {
3223        ALOGW("Type identifier 0x%x is larger than type count 0x%x",
3224             t+1, (int)grp->typeCount);
3225        return BAD_INDEX;
3226    }
3227
3228    const Package* const basePackage = grp->packages[0];
3229
3230    const Type* const typeConfigs = basePackage->getType(t);
3231
3232    const size_t NENTRY = typeConfigs->entryCount;
3233    if (e >= (int)NENTRY) {
3234        ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
3235             e, (int)typeConfigs->entryCount);
3236        return BAD_INDEX;
3237    }
3238
3239    // First see if we've already computed this bag...
3240    if (grp->bags) {
3241        bag_set** typeSet = grp->bags[t];
3242        if (typeSet) {
3243            bag_set* set = typeSet[e];
3244            if (set) {
3245                if (set != (bag_set*)0xFFFFFFFF) {
3246                    if (outTypeSpecFlags != NULL) {
3247                        *outTypeSpecFlags = set->typeSpecFlags;
3248                    }
3249                    *outBag = (bag_entry*)(set+1);
3250                    //ALOGI("Found existing bag for: %p\n", (void*)resID);
3251                    return set->numAttrs;
3252                }
3253                ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
3254                     resID);
3255                return BAD_INDEX;
3256            }
3257        }
3258    }
3259
3260    // Bag not found, we need to compute it!
3261    if (!grp->bags) {
3262        grp->bags = (bag_set***)calloc(grp->typeCount, sizeof(bag_set*));
3263        if (!grp->bags) return NO_MEMORY;
3264    }
3265
3266    bag_set** typeSet = grp->bags[t];
3267    if (!typeSet) {
3268        typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
3269        if (!typeSet) return NO_MEMORY;
3270        grp->bags[t] = typeSet;
3271    }
3272
3273    // Mark that we are currently working on this one.
3274    typeSet[e] = (bag_set*)0xFFFFFFFF;
3275
3276    // This is what we are building.
3277    bag_set* set = NULL;
3278
3279    TABLE_NOISY(ALOGI("Building bag: %p\n", (void*)resID));
3280
3281    ResTable_config bestConfig;
3282    memset(&bestConfig, 0, sizeof(bestConfig));
3283
3284    // Now collect all bag attributes from all packages.
3285    size_t ip = grp->packages.size();
3286    while (ip > 0) {
3287        ip--;
3288        int T = t;
3289        int E = e;
3290
3291        const Package* const package = grp->packages[ip];
3292        if (package->header->resourceIDMap) {
3293            uint32_t overlayResID = 0x0;
3294            status_t retval = idmapLookup(package->header->resourceIDMap,
3295                                          package->header->resourceIDMapSize,
3296                                          resID, &overlayResID);
3297            if (retval == NO_ERROR && overlayResID != 0x0) {
3298                // for this loop iteration, this is the type and entry we really want
3299                ALOGV("resource map 0x%08x -> 0x%08x\n", resID, overlayResID);
3300                T = Res_GETTYPE(overlayResID);
3301                E = Res_GETENTRY(overlayResID);
3302            } else {
3303                // resource not present in overlay package, continue with the next package
3304                continue;
3305            }
3306        }
3307
3308        const ResTable_type* type;
3309        const ResTable_entry* entry;
3310        const Type* typeClass;
3311        ALOGV("Getting entry pkg=%p, t=%d, e=%d\n", package, T, E);
3312        ssize_t offset = getEntry(package, T, E, &mParams, &type, &entry, &typeClass);
3313        ALOGV("Resulting offset=%d\n", offset);
3314        if (offset <= 0) {
3315            // No {entry, appropriate config} pair found in package. If this
3316            // package is an overlay package (ip != 0), this simply means the
3317            // overlay package did not specify a default.
3318            // Non-overlay packages are still required to provide a default.
3319            if (offset < 0 && ip == 0) {
3320                if (set) free(set);
3321                return offset;
3322            }
3323            continue;
3324        }
3325
3326        if ((dtohs(entry->flags)&entry->FLAG_COMPLEX) == 0) {
3327            ALOGW("Skipping entry %p in package table %d because it is not complex!\n",
3328                 (void*)resID, (int)ip);
3329            continue;
3330        }
3331
3332        if (set != NULL && !type->config.isBetterThan(bestConfig, NULL)) {
3333            continue;
3334        }
3335        bestConfig = type->config;
3336        if (set) {
3337            free(set);
3338            set = NULL;
3339        }
3340
3341        const uint16_t entrySize = dtohs(entry->size);
3342        const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
3343            ? dtohl(((const ResTable_map_entry*)entry)->parent.ident) : 0;
3344        const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
3345            ? dtohl(((const ResTable_map_entry*)entry)->count) : 0;
3346
3347        size_t N = count;
3348
3349        TABLE_NOISY(ALOGI("Found map: size=%p parent=%p count=%d\n",
3350                         entrySize, parent, count));
3351
3352        // If this map inherits from another, we need to start
3353        // with its parent's values.  Otherwise start out empty.
3354        TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
3355                           entrySize, parent));
3356        if (parent) {
3357            const bag_entry* parentBag;
3358            uint32_t parentTypeSpecFlags = 0;
3359            const ssize_t NP = getBagLocked(parent, &parentBag, &parentTypeSpecFlags);
3360            const size_t NT = ((NP >= 0) ? NP : 0) + N;
3361            set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
3362            if (set == NULL) {
3363                return NO_MEMORY;
3364            }
3365            if (NP > 0) {
3366                memcpy(set+1, parentBag, NP*sizeof(bag_entry));
3367                set->numAttrs = NP;
3368                TABLE_NOISY(ALOGI("Initialized new bag with %d inherited attributes.\n", NP));
3369            } else {
3370                TABLE_NOISY(ALOGI("Initialized new bag with no inherited attributes.\n"));
3371                set->numAttrs = 0;
3372            }
3373            set->availAttrs = NT;
3374            set->typeSpecFlags = parentTypeSpecFlags;
3375        } else {
3376            set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
3377            if (set == NULL) {
3378                return NO_MEMORY;
3379            }
3380            set->numAttrs = 0;
3381            set->availAttrs = N;
3382            set->typeSpecFlags = 0;
3383        }
3384
3385        if (typeClass->typeSpecFlags != NULL) {
3386            set->typeSpecFlags |= dtohl(typeClass->typeSpecFlags[E]);
3387        } else {
3388            set->typeSpecFlags = -1;
3389        }
3390
3391        // Now merge in the new attributes...
3392        ssize_t curOff = offset;
3393        const ResTable_map* map;
3394        bag_entry* entries = (bag_entry*)(set+1);
3395        size_t curEntry = 0;
3396        uint32_t pos = 0;
3397        TABLE_NOISY(ALOGI("Starting with set %p, entries=%p, avail=%d\n",
3398                     set, entries, set->availAttrs));
3399        while (pos < count) {
3400            TABLE_NOISY(printf("Now at %p\n", (void*)curOff));
3401
3402            if ((size_t)curOff > (dtohl(type->header.size)-sizeof(ResTable_map))) {
3403                ALOGW("ResTable_map at %d is beyond type chunk data %d",
3404                     (int)curOff, dtohl(type->header.size));
3405                return BAD_TYPE;
3406            }
3407            map = (const ResTable_map*)(((const uint8_t*)type) + curOff);
3408            N++;
3409
3410            const uint32_t newName = htodl(map->name.ident);
3411            bool isInside;
3412            uint32_t oldName = 0;
3413            while ((isInside=(curEntry < set->numAttrs))
3414                    && (oldName=entries[curEntry].map.name.ident) < newName) {
3415                TABLE_NOISY(printf("#%d: Keeping existing attribute: 0x%08x\n",
3416                             curEntry, entries[curEntry].map.name.ident));
3417                curEntry++;
3418            }
3419
3420            if ((!isInside) || oldName != newName) {
3421                // This is a new attribute...  figure out what to do with it.
3422                if (set->numAttrs >= set->availAttrs) {
3423                    // Need to alloc more memory...
3424                    const size_t newAvail = set->availAttrs+N;
3425                    set = (bag_set*)realloc(set,
3426                                            sizeof(bag_set)
3427                                            + sizeof(bag_entry)*newAvail);
3428                    if (set == NULL) {
3429                        return NO_MEMORY;
3430                    }
3431                    set->availAttrs = newAvail;
3432                    entries = (bag_entry*)(set+1);
3433                    TABLE_NOISY(printf("Reallocated set %p, entries=%p, avail=%d\n",
3434                                 set, entries, set->availAttrs));
3435                }
3436                if (isInside) {
3437                    // Going in the middle, need to make space.
3438                    memmove(entries+curEntry+1, entries+curEntry,
3439                            sizeof(bag_entry)*(set->numAttrs-curEntry));
3440                    set->numAttrs++;
3441                }
3442                TABLE_NOISY(printf("#%d: Inserting new attribute: 0x%08x\n",
3443                             curEntry, newName));
3444            } else {
3445                TABLE_NOISY(printf("#%d: Replacing existing attribute: 0x%08x\n",
3446                             curEntry, oldName));
3447            }
3448
3449            bag_entry* cur = entries+curEntry;
3450
3451            cur->stringBlock = package->header->index;
3452            cur->map.name.ident = newName;
3453            cur->map.value.copyFrom_dtoh(map->value);
3454            TABLE_NOISY(printf("Setting entry #%d %p: block=%d, name=0x%08x, type=%d, data=0x%08x\n",
3455                         curEntry, cur, cur->stringBlock, cur->map.name.ident,
3456                         cur->map.value.dataType, cur->map.value.data));
3457
3458            // On to the next!
3459            curEntry++;
3460            pos++;
3461            const size_t size = dtohs(map->value.size);
3462            curOff += size + sizeof(*map)-sizeof(map->value);
3463        };
3464        if (curEntry > set->numAttrs) {
3465            set->numAttrs = curEntry;
3466        }
3467    }
3468
3469    // And this is it...
3470    typeSet[e] = set;
3471    if (set) {
3472        if (outTypeSpecFlags != NULL) {
3473            *outTypeSpecFlags = set->typeSpecFlags;
3474        }
3475        *outBag = (bag_entry*)(set+1);
3476        TABLE_NOISY(ALOGI("Returning %d attrs\n", set->numAttrs));
3477        return set->numAttrs;
3478    }
3479    return BAD_INDEX;
3480}
3481
3482void ResTable::setParameters(const ResTable_config* params)
3483{
3484    mLock.lock();
3485    TABLE_GETENTRY(ALOGI("Setting parameters: %s\n", params->toString().string()));
3486    mParams = *params;
3487    for (size_t i=0; i<mPackageGroups.size(); i++) {
3488        TABLE_NOISY(ALOGI("CLEARING BAGS FOR GROUP %d!", i));
3489        mPackageGroups[i]->clearBagCache();
3490    }
3491    mLock.unlock();
3492}
3493
3494void ResTable::getParameters(ResTable_config* params) const
3495{
3496    mLock.lock();
3497    *params = mParams;
3498    mLock.unlock();
3499}
3500
3501struct id_name_map {
3502    uint32_t id;
3503    size_t len;
3504    char16_t name[6];
3505};
3506
3507const static id_name_map ID_NAMES[] = {
3508    { ResTable_map::ATTR_TYPE,  5, { '^', 't', 'y', 'p', 'e' } },
3509    { ResTable_map::ATTR_L10N,  5, { '^', 'l', '1', '0', 'n' } },
3510    { ResTable_map::ATTR_MIN,   4, { '^', 'm', 'i', 'n' } },
3511    { ResTable_map::ATTR_MAX,   4, { '^', 'm', 'a', 'x' } },
3512    { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
3513    { ResTable_map::ATTR_ZERO,  5, { '^', 'z', 'e', 'r', 'o' } },
3514    { ResTable_map::ATTR_ONE,   4, { '^', 'o', 'n', 'e' } },
3515    { ResTable_map::ATTR_TWO,   4, { '^', 't', 'w', 'o' } },
3516    { ResTable_map::ATTR_FEW,   4, { '^', 'f', 'e', 'w' } },
3517    { ResTable_map::ATTR_MANY,  5, { '^', 'm', 'a', 'n', 'y' } },
3518};
3519
3520uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
3521                                     const char16_t* type, size_t typeLen,
3522                                     const char16_t* package,
3523                                     size_t packageLen,
3524                                     uint32_t* outTypeSpecFlags) const
3525{
3526    TABLE_SUPER_NOISY(printf("Identifier for name: error=%d\n", mError));
3527
3528    // Check for internal resource identifier as the very first thing, so
3529    // that we will always find them even when there are no resources.
3530    if (name[0] == '^') {
3531        const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
3532        size_t len;
3533        for (int i=0; i<N; i++) {
3534            const id_name_map* m = ID_NAMES + i;
3535            len = m->len;
3536            if (len != nameLen) {
3537                continue;
3538            }
3539            for (size_t j=1; j<len; j++) {
3540                if (m->name[j] != name[j]) {
3541                    goto nope;
3542                }
3543            }
3544            if (outTypeSpecFlags) {
3545                *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
3546            }
3547            return m->id;
3548nope:
3549            ;
3550        }
3551        if (nameLen > 7) {
3552            if (name[1] == 'i' && name[2] == 'n'
3553                && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
3554                && name[6] == '_') {
3555                int index = atoi(String8(name + 7, nameLen - 7).string());
3556                if (Res_CHECKID(index)) {
3557                    ALOGW("Array resource index: %d is too large.",
3558                         index);
3559                    return 0;
3560                }
3561                if (outTypeSpecFlags) {
3562                    *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
3563                }
3564                return  Res_MAKEARRAY(index);
3565            }
3566        }
3567        return 0;
3568    }
3569
3570    if (mError != NO_ERROR) {
3571        return 0;
3572    }
3573
3574    bool fakePublic = false;
3575
3576    // Figure out the package and type we are looking in...
3577
3578    const char16_t* packageEnd = NULL;
3579    const char16_t* typeEnd = NULL;
3580    const char16_t* const nameEnd = name+nameLen;
3581    const char16_t* p = name;
3582    while (p < nameEnd) {
3583        if (*p == ':') packageEnd = p;
3584        else if (*p == '/') typeEnd = p;
3585        p++;
3586    }
3587    if (*name == '@') {
3588        name++;
3589        if (*name == '*') {
3590            fakePublic = true;
3591            name++;
3592        }
3593    }
3594    if (name >= nameEnd) {
3595        return 0;
3596    }
3597
3598    if (packageEnd) {
3599        package = name;
3600        packageLen = packageEnd-name;
3601        name = packageEnd+1;
3602    } else if (!package) {
3603        return 0;
3604    }
3605
3606    if (typeEnd) {
3607        type = name;
3608        typeLen = typeEnd-name;
3609        name = typeEnd+1;
3610    } else if (!type) {
3611        return 0;
3612    }
3613
3614    if (name >= nameEnd) {
3615        return 0;
3616    }
3617    nameLen = nameEnd-name;
3618
3619    TABLE_NOISY(printf("Looking for identifier: type=%s, name=%s, package=%s\n",
3620                 String8(type, typeLen).string(),
3621                 String8(name, nameLen).string(),
3622                 String8(package, packageLen).string()));
3623
3624    const size_t NG = mPackageGroups.size();
3625    for (size_t ig=0; ig<NG; ig++) {
3626        const PackageGroup* group = mPackageGroups[ig];
3627
3628        if (strzcmp16(package, packageLen,
3629                      group->name.string(), group->name.size())) {
3630            TABLE_NOISY(printf("Skipping package group: %s\n", String8(group->name).string()));
3631            continue;
3632        }
3633
3634        const ssize_t ti = group->basePackage->typeStrings.indexOfString(type, typeLen);
3635        if (ti < 0) {
3636            TABLE_NOISY(printf("Type not found in package %s\n", String8(group->name).string()));
3637            continue;
3638        }
3639
3640        const ssize_t ei = group->basePackage->keyStrings.indexOfString(name, nameLen);
3641        if (ei < 0) {
3642            TABLE_NOISY(printf("Name not found in package %s\n", String8(group->name).string()));
3643            continue;
3644        }
3645
3646        TABLE_NOISY(printf("Search indices: type=%d, name=%d\n", ti, ei));
3647
3648        const Type* const typeConfigs = group->packages[0]->getType(ti);
3649        if (typeConfigs == NULL || typeConfigs->configs.size() <= 0) {
3650            TABLE_NOISY(printf("Expected type structure not found in package %s for idnex %d\n",
3651                               String8(group->name).string(), ti));
3652        }
3653
3654        size_t NTC = typeConfigs->configs.size();
3655        for (size_t tci=0; tci<NTC; tci++) {
3656            const ResTable_type* const ty = typeConfigs->configs[tci];
3657            const uint32_t typeOffset = dtohl(ty->entriesStart);
3658
3659            const uint8_t* const end = ((const uint8_t*)ty) + dtohl(ty->header.size);
3660            const uint32_t* const eindex = (const uint32_t*)
3661                (((const uint8_t*)ty) + dtohs(ty->header.headerSize));
3662
3663            const size_t NE = dtohl(ty->entryCount);
3664            for (size_t i=0; i<NE; i++) {
3665                uint32_t offset = dtohl(eindex[i]);
3666                if (offset == ResTable_type::NO_ENTRY) {
3667                    continue;
3668                }
3669
3670                offset += typeOffset;
3671
3672                if (offset > (dtohl(ty->header.size)-sizeof(ResTable_entry))) {
3673                    ALOGW("ResTable_entry at %d is beyond type chunk data %d",
3674                         offset, dtohl(ty->header.size));
3675                    return 0;
3676                }
3677                if ((offset&0x3) != 0) {
3678                    ALOGW("ResTable_entry at %d (pkg=%d type=%d ent=%d) is not on an integer boundary when looking for %s:%s/%s",
3679                         (int)offset, (int)group->id, (int)ti+1, (int)i,
3680                         String8(package, packageLen).string(),
3681                         String8(type, typeLen).string(),
3682                         String8(name, nameLen).string());
3683                    return 0;
3684                }
3685
3686                const ResTable_entry* const entry = (const ResTable_entry*)
3687                    (((const uint8_t*)ty) + offset);
3688                if (dtohs(entry->size) < sizeof(*entry)) {
3689                    ALOGW("ResTable_entry size %d is too small", dtohs(entry->size));
3690                    return BAD_TYPE;
3691                }
3692
3693                TABLE_SUPER_NOISY(printf("Looking at entry #%d: want str %d, have %d\n",
3694                                         i, ei, dtohl(entry->key.index)));
3695                if (dtohl(entry->key.index) == (size_t)ei) {
3696                    if (outTypeSpecFlags) {
3697                        *outTypeSpecFlags = typeConfigs->typeSpecFlags[i];
3698                        if (fakePublic) {
3699                            *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
3700                        }
3701                    }
3702                    return Res_MAKEID(group->id-1, ti, i);
3703                }
3704            }
3705        }
3706    }
3707
3708    return 0;
3709}
3710
3711bool ResTable::expandResourceRef(const uint16_t* refStr, size_t refLen,
3712                                 String16* outPackage,
3713                                 String16* outType,
3714                                 String16* outName,
3715                                 const String16* defType,
3716                                 const String16* defPackage,
3717                                 const char** outErrorMsg,
3718                                 bool* outPublicOnly)
3719{
3720    const char16_t* packageEnd = NULL;
3721    const char16_t* typeEnd = NULL;
3722    const char16_t* p = refStr;
3723    const char16_t* const end = p + refLen;
3724    while (p < end) {
3725        if (*p == ':') packageEnd = p;
3726        else if (*p == '/') {
3727            typeEnd = p;
3728            break;
3729        }
3730        p++;
3731    }
3732    p = refStr;
3733    if (*p == '@') p++;
3734
3735    if (outPublicOnly != NULL) {
3736        *outPublicOnly = true;
3737    }
3738    if (*p == '*') {
3739        p++;
3740        if (outPublicOnly != NULL) {
3741            *outPublicOnly = false;
3742        }
3743    }
3744
3745    if (packageEnd) {
3746        *outPackage = String16(p, packageEnd-p);
3747        p = packageEnd+1;
3748    } else {
3749        if (!defPackage) {
3750            if (outErrorMsg) {
3751                *outErrorMsg = "No resource package specified";
3752            }
3753            return false;
3754        }
3755        *outPackage = *defPackage;
3756    }
3757    if (typeEnd) {
3758        *outType = String16(p, typeEnd-p);
3759        p = typeEnd+1;
3760    } else {
3761        if (!defType) {
3762            if (outErrorMsg) {
3763                *outErrorMsg = "No resource type specified";
3764            }
3765            return false;
3766        }
3767        *outType = *defType;
3768    }
3769    *outName = String16(p, end-p);
3770    if(**outPackage == 0) {
3771        if(outErrorMsg) {
3772            *outErrorMsg = "Resource package cannot be an empty string";
3773        }
3774        return false;
3775    }
3776    if(**outType == 0) {
3777        if(outErrorMsg) {
3778            *outErrorMsg = "Resource type cannot be an empty string";
3779        }
3780        return false;
3781    }
3782    if(**outName == 0) {
3783        if(outErrorMsg) {
3784            *outErrorMsg = "Resource id cannot be an empty string";
3785        }
3786        return false;
3787    }
3788    return true;
3789}
3790
3791static uint32_t get_hex(char c, bool* outError)
3792{
3793    if (c >= '0' && c <= '9') {
3794        return c - '0';
3795    } else if (c >= 'a' && c <= 'f') {
3796        return c - 'a' + 0xa;
3797    } else if (c >= 'A' && c <= 'F') {
3798        return c - 'A' + 0xa;
3799    }
3800    *outError = true;
3801    return 0;
3802}
3803
3804struct unit_entry
3805{
3806    const char* name;
3807    size_t len;
3808    uint8_t type;
3809    uint32_t unit;
3810    float scale;
3811};
3812
3813static const unit_entry unitNames[] = {
3814    { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
3815    { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
3816    { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
3817    { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
3818    { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
3819    { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
3820    { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
3821    { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
3822    { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
3823    { NULL, 0, 0, 0, 0 }
3824};
3825
3826static bool parse_unit(const char* str, Res_value* outValue,
3827                       float* outScale, const char** outEnd)
3828{
3829    const char* end = str;
3830    while (*end != 0 && !isspace((unsigned char)*end)) {
3831        end++;
3832    }
3833    const size_t len = end-str;
3834
3835    const char* realEnd = end;
3836    while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
3837        realEnd++;
3838    }
3839    if (*realEnd != 0) {
3840        return false;
3841    }
3842
3843    const unit_entry* cur = unitNames;
3844    while (cur->name) {
3845        if (len == cur->len && strncmp(cur->name, str, len) == 0) {
3846            outValue->dataType = cur->type;
3847            outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
3848            *outScale = cur->scale;
3849            *outEnd = end;
3850            //printf("Found unit %s for %s\n", cur->name, str);
3851            return true;
3852        }
3853        cur++;
3854    }
3855
3856    return false;
3857}
3858
3859
3860bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
3861{
3862    while (len > 0 && isspace16(*s)) {
3863        s++;
3864        len--;
3865    }
3866
3867    if (len <= 0) {
3868        return false;
3869    }
3870
3871    size_t i = 0;
3872    int32_t val = 0;
3873    bool neg = false;
3874
3875    if (*s == '-') {
3876        neg = true;
3877        i++;
3878    }
3879
3880    if (s[i] < '0' || s[i] > '9') {
3881        return false;
3882    }
3883
3884    // Decimal or hex?
3885    if (s[i] == '0' && s[i+1] == 'x') {
3886        if (outValue)
3887            outValue->dataType = outValue->TYPE_INT_HEX;
3888        i += 2;
3889        bool error = false;
3890        while (i < len && !error) {
3891            val = (val*16) + get_hex(s[i], &error);
3892            i++;
3893        }
3894        if (error) {
3895            return false;
3896        }
3897    } else {
3898        if (outValue)
3899            outValue->dataType = outValue->TYPE_INT_DEC;
3900        while (i < len) {
3901            if (s[i] < '0' || s[i] > '9') {
3902                return false;
3903            }
3904            val = (val*10) + s[i]-'0';
3905            i++;
3906        }
3907    }
3908
3909    if (neg) val = -val;
3910
3911    while (i < len && isspace16(s[i])) {
3912        i++;
3913    }
3914
3915    if (i == len) {
3916        if (outValue)
3917            outValue->data = val;
3918        return true;
3919    }
3920
3921    return false;
3922}
3923
3924bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
3925{
3926    while (len > 0 && isspace16(*s)) {
3927        s++;
3928        len--;
3929    }
3930
3931    if (len <= 0) {
3932        return false;
3933    }
3934
3935    char buf[128];
3936    int i=0;
3937    while (len > 0 && *s != 0 && i < 126) {
3938        if (*s > 255) {
3939            return false;
3940        }
3941        buf[i++] = *s++;
3942        len--;
3943    }
3944
3945    if (len > 0) {
3946        return false;
3947    }
3948    if (buf[0] < '0' && buf[0] > '9' && buf[0] != '.') {
3949        return false;
3950    }
3951
3952    buf[i] = 0;
3953    const char* end;
3954    float f = strtof(buf, (char**)&end);
3955
3956    if (*end != 0 && !isspace((unsigned char)*end)) {
3957        // Might be a unit...
3958        float scale;
3959        if (parse_unit(end, outValue, &scale, &end)) {
3960            f *= scale;
3961            const bool neg = f < 0;
3962            if (neg) f = -f;
3963            uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
3964            uint32_t radix;
3965            uint32_t shift;
3966            if ((bits&0x7fffff) == 0) {
3967                // Always use 23p0 if there is no fraction, just to make
3968                // things easier to read.
3969                radix = Res_value::COMPLEX_RADIX_23p0;
3970                shift = 23;
3971            } else if ((bits&0xffffffffff800000LL) == 0) {
3972                // Magnitude is zero -- can fit in 0 bits of precision.
3973                radix = Res_value::COMPLEX_RADIX_0p23;
3974                shift = 0;
3975            } else if ((bits&0xffffffff80000000LL) == 0) {
3976                // Magnitude can fit in 8 bits of precision.
3977                radix = Res_value::COMPLEX_RADIX_8p15;
3978                shift = 8;
3979            } else if ((bits&0xffffff8000000000LL) == 0) {
3980                // Magnitude can fit in 16 bits of precision.
3981                radix = Res_value::COMPLEX_RADIX_16p7;
3982                shift = 16;
3983            } else {
3984                // Magnitude needs entire range, so no fractional part.
3985                radix = Res_value::COMPLEX_RADIX_23p0;
3986                shift = 23;
3987            }
3988            int32_t mantissa = (int32_t)(
3989                (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
3990            if (neg) {
3991                mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
3992            }
3993            outValue->data |=
3994                (radix<<Res_value::COMPLEX_RADIX_SHIFT)
3995                | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
3996            //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
3997            //       f * (neg ? -1 : 1), bits, f*(1<<23),
3998            //       radix, shift, outValue->data);
3999            return true;
4000        }
4001        return false;
4002    }
4003
4004    while (*end != 0 && isspace((unsigned char)*end)) {
4005        end++;
4006    }
4007
4008    if (*end == 0) {
4009        if (outValue) {
4010            outValue->dataType = outValue->TYPE_FLOAT;
4011            *(float*)(&outValue->data) = f;
4012            return true;
4013        }
4014    }
4015
4016    return false;
4017}
4018
4019bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4020                             const char16_t* s, size_t len,
4021                             bool preserveSpaces, bool coerceType,
4022                             uint32_t attrID,
4023                             const String16* defType,
4024                             const String16* defPackage,
4025                             Accessor* accessor,
4026                             void* accessorCookie,
4027                             uint32_t attrType,
4028                             bool enforcePrivate) const
4029{
4030    bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4031    const char* errorMsg = NULL;
4032
4033    outValue->size = sizeof(Res_value);
4034    outValue->res0 = 0;
4035
4036    // First strip leading/trailing whitespace.  Do this before handling
4037    // escapes, so they can be used to force whitespace into the string.
4038    if (!preserveSpaces) {
4039        while (len > 0 && isspace16(*s)) {
4040            s++;
4041            len--;
4042        }
4043        while (len > 0 && isspace16(s[len-1])) {
4044            len--;
4045        }
4046        // If the string ends with '\', then we keep the space after it.
4047        if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4048            len++;
4049        }
4050    }
4051
4052    //printf("Value for: %s\n", String8(s, len).string());
4053
4054    uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4055    uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4056    bool fromAccessor = false;
4057    if (attrID != 0 && !Res_INTERNALID(attrID)) {
4058        const ssize_t p = getResourcePackageIndex(attrID);
4059        const bag_entry* bag;
4060        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4061        //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4062        if (cnt >= 0) {
4063            while (cnt > 0) {
4064                //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4065                switch (bag->map.name.ident) {
4066                case ResTable_map::ATTR_TYPE:
4067                    attrType = bag->map.value.data;
4068                    break;
4069                case ResTable_map::ATTR_MIN:
4070                    attrMin = bag->map.value.data;
4071                    break;
4072                case ResTable_map::ATTR_MAX:
4073                    attrMax = bag->map.value.data;
4074                    break;
4075                case ResTable_map::ATTR_L10N:
4076                    l10nReq = bag->map.value.data;
4077                    break;
4078                }
4079                bag++;
4080                cnt--;
4081            }
4082            unlockBag(bag);
4083        } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4084            fromAccessor = true;
4085            if (attrType == ResTable_map::TYPE_ENUM
4086                    || attrType == ResTable_map::TYPE_FLAGS
4087                    || attrType == ResTable_map::TYPE_INTEGER) {
4088                accessor->getAttributeMin(attrID, &attrMin);
4089                accessor->getAttributeMax(attrID, &attrMax);
4090            }
4091            if (localizationSetting) {
4092                l10nReq = accessor->getAttributeL10N(attrID);
4093            }
4094        }
4095    }
4096
4097    const bool canStringCoerce =
4098        coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4099
4100    if (*s == '@') {
4101        outValue->dataType = outValue->TYPE_REFERENCE;
4102
4103        // Note: we don't check attrType here because the reference can
4104        // be to any other type; we just need to count on the client making
4105        // sure the referenced type is correct.
4106
4107        //printf("Looking up ref: %s\n", String8(s, len).string());
4108
4109        // It's a reference!
4110        if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4111            outValue->data = 0;
4112            return true;
4113        } else {
4114            bool createIfNotFound = false;
4115            const char16_t* resourceRefName;
4116            int resourceNameLen;
4117            if (len > 2 && s[1] == '+') {
4118                createIfNotFound = true;
4119                resourceRefName = s + 2;
4120                resourceNameLen = len - 2;
4121            } else if (len > 2 && s[1] == '*') {
4122                enforcePrivate = false;
4123                resourceRefName = s + 2;
4124                resourceNameLen = len - 2;
4125            } else {
4126                createIfNotFound = false;
4127                resourceRefName = s + 1;
4128                resourceNameLen = len - 1;
4129            }
4130            String16 package, type, name;
4131            if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
4132                                   defType, defPackage, &errorMsg)) {
4133                if (accessor != NULL) {
4134                    accessor->reportError(accessorCookie, errorMsg);
4135                }
4136                return false;
4137            }
4138
4139            uint32_t specFlags = 0;
4140            uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
4141                    type.size(), package.string(), package.size(), &specFlags);
4142            if (rid != 0) {
4143                if (enforcePrivate) {
4144                    if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4145                        if (accessor != NULL) {
4146                            accessor->reportError(accessorCookie, "Resource is not public.");
4147                        }
4148                        return false;
4149                    }
4150                }
4151                if (!accessor) {
4152                    outValue->data = rid;
4153                    return true;
4154                }
4155                rid = Res_MAKEID(
4156                    accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4157                    Res_GETTYPE(rid), Res_GETENTRY(rid));
4158                TABLE_NOISY(printf("Incl %s:%s/%s: 0x%08x\n",
4159                       String8(package).string(), String8(type).string(),
4160                       String8(name).string(), rid));
4161                outValue->data = rid;
4162                return true;
4163            }
4164
4165            if (accessor) {
4166                uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
4167                                                                       createIfNotFound);
4168                if (rid != 0) {
4169                    TABLE_NOISY(printf("Pckg %s:%s/%s: 0x%08x\n",
4170                           String8(package).string(), String8(type).string(),
4171                           String8(name).string(), rid));
4172                    outValue->data = rid;
4173                    return true;
4174                }
4175            }
4176        }
4177
4178        if (accessor != NULL) {
4179            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4180        }
4181        return false;
4182    }
4183
4184    // if we got to here, and localization is required and it's not a reference,
4185    // complain and bail.
4186    if (l10nReq == ResTable_map::L10N_SUGGESTED) {
4187        if (localizationSetting) {
4188            if (accessor != NULL) {
4189                accessor->reportError(accessorCookie, "This attribute must be localized.");
4190            }
4191        }
4192    }
4193
4194    if (*s == '#') {
4195        // It's a color!  Convert to an integer of the form 0xaarrggbb.
4196        uint32_t color = 0;
4197        bool error = false;
4198        if (len == 4) {
4199            outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
4200            color |= 0xFF000000;
4201            color |= get_hex(s[1], &error) << 20;
4202            color |= get_hex(s[1], &error) << 16;
4203            color |= get_hex(s[2], &error) << 12;
4204            color |= get_hex(s[2], &error) << 8;
4205            color |= get_hex(s[3], &error) << 4;
4206            color |= get_hex(s[3], &error);
4207        } else if (len == 5) {
4208            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
4209            color |= get_hex(s[1], &error) << 28;
4210            color |= get_hex(s[1], &error) << 24;
4211            color |= get_hex(s[2], &error) << 20;
4212            color |= get_hex(s[2], &error) << 16;
4213            color |= get_hex(s[3], &error) << 12;
4214            color |= get_hex(s[3], &error) << 8;
4215            color |= get_hex(s[4], &error) << 4;
4216            color |= get_hex(s[4], &error);
4217        } else if (len == 7) {
4218            outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
4219            color |= 0xFF000000;
4220            color |= get_hex(s[1], &error) << 20;
4221            color |= get_hex(s[2], &error) << 16;
4222            color |= get_hex(s[3], &error) << 12;
4223            color |= get_hex(s[4], &error) << 8;
4224            color |= get_hex(s[5], &error) << 4;
4225            color |= get_hex(s[6], &error);
4226        } else if (len == 9) {
4227            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
4228            color |= get_hex(s[1], &error) << 28;
4229            color |= get_hex(s[2], &error) << 24;
4230            color |= get_hex(s[3], &error) << 20;
4231            color |= get_hex(s[4], &error) << 16;
4232            color |= get_hex(s[5], &error) << 12;
4233            color |= get_hex(s[6], &error) << 8;
4234            color |= get_hex(s[7], &error) << 4;
4235            color |= get_hex(s[8], &error);
4236        } else {
4237            error = true;
4238        }
4239        if (!error) {
4240            if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
4241                if (!canStringCoerce) {
4242                    if (accessor != NULL) {
4243                        accessor->reportError(accessorCookie,
4244                                "Color types not allowed");
4245                    }
4246                    return false;
4247                }
4248            } else {
4249                outValue->data = color;
4250                //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
4251                return true;
4252            }
4253        } else {
4254            if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
4255                if (accessor != NULL) {
4256                    accessor->reportError(accessorCookie, "Color value not valid --"
4257                            " must be #rgb, #argb, #rrggbb, or #aarrggbb");
4258                }
4259                #if 0
4260                fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
4261                        "Resource File", //(const char*)in->getPrintableSource(),
4262                        String8(*curTag).string(),
4263                        String8(s, len).string());
4264                #endif
4265                return false;
4266            }
4267        }
4268    }
4269
4270    if (*s == '?') {
4271        outValue->dataType = outValue->TYPE_ATTRIBUTE;
4272
4273        // Note: we don't check attrType here because the reference can
4274        // be to any other type; we just need to count on the client making
4275        // sure the referenced type is correct.
4276
4277        //printf("Looking up attr: %s\n", String8(s, len).string());
4278
4279        static const String16 attr16("attr");
4280        String16 package, type, name;
4281        if (!expandResourceRef(s+1, len-1, &package, &type, &name,
4282                               &attr16, defPackage, &errorMsg)) {
4283            if (accessor != NULL) {
4284                accessor->reportError(accessorCookie, errorMsg);
4285            }
4286            return false;
4287        }
4288
4289        //printf("Pkg: %s, Type: %s, Name: %s\n",
4290        //       String8(package).string(), String8(type).string(),
4291        //       String8(name).string());
4292        uint32_t specFlags = 0;
4293        uint32_t rid =
4294            identifierForName(name.string(), name.size(),
4295                              type.string(), type.size(),
4296                              package.string(), package.size(), &specFlags);
4297        if (rid != 0) {
4298            if (enforcePrivate) {
4299                if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4300                    if (accessor != NULL) {
4301                        accessor->reportError(accessorCookie, "Attribute is not public.");
4302                    }
4303                    return false;
4304                }
4305            }
4306            if (!accessor) {
4307                outValue->data = rid;
4308                return true;
4309            }
4310            rid = Res_MAKEID(
4311                accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4312                Res_GETTYPE(rid), Res_GETENTRY(rid));
4313            //printf("Incl %s:%s/%s: 0x%08x\n",
4314            //       String8(package).string(), String8(type).string(),
4315            //       String8(name).string(), rid);
4316            outValue->data = rid;
4317            return true;
4318        }
4319
4320        if (accessor) {
4321            uint32_t rid = accessor->getCustomResource(package, type, name);
4322            if (rid != 0) {
4323                //printf("Mine %s:%s/%s: 0x%08x\n",
4324                //       String8(package).string(), String8(type).string(),
4325                //       String8(name).string(), rid);
4326                outValue->data = rid;
4327                return true;
4328            }
4329        }
4330
4331        if (accessor != NULL) {
4332            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4333        }
4334        return false;
4335    }
4336
4337    if (stringToInt(s, len, outValue)) {
4338        if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
4339            // If this type does not allow integers, but does allow floats,
4340            // fall through on this error case because the float type should
4341            // be able to accept any integer value.
4342            if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
4343                if (accessor != NULL) {
4344                    accessor->reportError(accessorCookie, "Integer types not allowed");
4345                }
4346                return false;
4347            }
4348        } else {
4349            if (((int32_t)outValue->data) < ((int32_t)attrMin)
4350                    || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
4351                if (accessor != NULL) {
4352                    accessor->reportError(accessorCookie, "Integer value out of range");
4353                }
4354                return false;
4355            }
4356            return true;
4357        }
4358    }
4359
4360    if (stringToFloat(s, len, outValue)) {
4361        if (outValue->dataType == Res_value::TYPE_DIMENSION) {
4362            if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
4363                return true;
4364            }
4365            if (!canStringCoerce) {
4366                if (accessor != NULL) {
4367                    accessor->reportError(accessorCookie, "Dimension types not allowed");
4368                }
4369                return false;
4370            }
4371        } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
4372            if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
4373                return true;
4374            }
4375            if (!canStringCoerce) {
4376                if (accessor != NULL) {
4377                    accessor->reportError(accessorCookie, "Fraction types not allowed");
4378                }
4379                return false;
4380            }
4381        } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
4382            if (!canStringCoerce) {
4383                if (accessor != NULL) {
4384                    accessor->reportError(accessorCookie, "Float types not allowed");
4385                }
4386                return false;
4387            }
4388        } else {
4389            return true;
4390        }
4391    }
4392
4393    if (len == 4) {
4394        if ((s[0] == 't' || s[0] == 'T') &&
4395            (s[1] == 'r' || s[1] == 'R') &&
4396            (s[2] == 'u' || s[2] == 'U') &&
4397            (s[3] == 'e' || s[3] == 'E')) {
4398            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4399                if (!canStringCoerce) {
4400                    if (accessor != NULL) {
4401                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4402                    }
4403                    return false;
4404                }
4405            } else {
4406                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4407                outValue->data = (uint32_t)-1;
4408                return true;
4409            }
4410        }
4411    }
4412
4413    if (len == 5) {
4414        if ((s[0] == 'f' || s[0] == 'F') &&
4415            (s[1] == 'a' || s[1] == 'A') &&
4416            (s[2] == 'l' || s[2] == 'L') &&
4417            (s[3] == 's' || s[3] == 'S') &&
4418            (s[4] == 'e' || s[4] == 'E')) {
4419            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4420                if (!canStringCoerce) {
4421                    if (accessor != NULL) {
4422                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4423                    }
4424                    return false;
4425                }
4426            } else {
4427                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4428                outValue->data = 0;
4429                return true;
4430            }
4431        }
4432    }
4433
4434    if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
4435        const ssize_t p = getResourcePackageIndex(attrID);
4436        const bag_entry* bag;
4437        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4438        //printf("Got %d for enum\n", cnt);
4439        if (cnt >= 0) {
4440            resource_name rname;
4441            while (cnt > 0) {
4442                if (!Res_INTERNALID(bag->map.name.ident)) {
4443                    //printf("Trying attr #%08x\n", bag->map.name.ident);
4444                    if (getResourceName(bag->map.name.ident, &rname)) {
4445                        #if 0
4446                        printf("Matching %s against %s (0x%08x)\n",
4447                               String8(s, len).string(),
4448                               String8(rname.name, rname.nameLen).string(),
4449                               bag->map.name.ident);
4450                        #endif
4451                        if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
4452                            outValue->dataType = bag->map.value.dataType;
4453                            outValue->data = bag->map.value.data;
4454                            unlockBag(bag);
4455                            return true;
4456                        }
4457                    }
4458
4459                }
4460                bag++;
4461                cnt--;
4462            }
4463            unlockBag(bag);
4464        }
4465
4466        if (fromAccessor) {
4467            if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
4468                return true;
4469            }
4470        }
4471    }
4472
4473    if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
4474        const ssize_t p = getResourcePackageIndex(attrID);
4475        const bag_entry* bag;
4476        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4477        //printf("Got %d for flags\n", cnt);
4478        if (cnt >= 0) {
4479            bool failed = false;
4480            resource_name rname;
4481            outValue->dataType = Res_value::TYPE_INT_HEX;
4482            outValue->data = 0;
4483            const char16_t* end = s + len;
4484            const char16_t* pos = s;
4485            while (pos < end && !failed) {
4486                const char16_t* start = pos;
4487                pos++;
4488                while (pos < end && *pos != '|') {
4489                    pos++;
4490                }
4491                //printf("Looking for: %s\n", String8(start, pos-start).string());
4492                const bag_entry* bagi = bag;
4493                ssize_t i;
4494                for (i=0; i<cnt; i++, bagi++) {
4495                    if (!Res_INTERNALID(bagi->map.name.ident)) {
4496                        //printf("Trying attr #%08x\n", bagi->map.name.ident);
4497                        if (getResourceName(bagi->map.name.ident, &rname)) {
4498                            #if 0
4499                            printf("Matching %s against %s (0x%08x)\n",
4500                                   String8(start,pos-start).string(),
4501                                   String8(rname.name, rname.nameLen).string(),
4502                                   bagi->map.name.ident);
4503                            #endif
4504                            if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
4505                                outValue->data |= bagi->map.value.data;
4506                                break;
4507                            }
4508                        }
4509                    }
4510                }
4511                if (i >= cnt) {
4512                    // Didn't find this flag identifier.
4513                    failed = true;
4514                }
4515                if (pos < end) {
4516                    pos++;
4517                }
4518            }
4519            unlockBag(bag);
4520            if (!failed) {
4521                //printf("Final flag value: 0x%lx\n", outValue->data);
4522                return true;
4523            }
4524        }
4525
4526
4527        if (fromAccessor) {
4528            if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
4529                //printf("Final flag value: 0x%lx\n", outValue->data);
4530                return true;
4531            }
4532        }
4533    }
4534
4535    if ((attrType&ResTable_map::TYPE_STRING) == 0) {
4536        if (accessor != NULL) {
4537            accessor->reportError(accessorCookie, "String types not allowed");
4538        }
4539        return false;
4540    }
4541
4542    // Generic string handling...
4543    outValue->dataType = outValue->TYPE_STRING;
4544    if (outString) {
4545        bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
4546        if (accessor != NULL) {
4547            accessor->reportError(accessorCookie, errorMsg);
4548        }
4549        return failed;
4550    }
4551
4552    return true;
4553}
4554
4555bool ResTable::collectString(String16* outString,
4556                             const char16_t* s, size_t len,
4557                             bool preserveSpaces,
4558                             const char** outErrorMsg,
4559                             bool append)
4560{
4561    String16 tmp;
4562
4563    char quoted = 0;
4564    const char16_t* p = s;
4565    while (p < (s+len)) {
4566        while (p < (s+len)) {
4567            const char16_t c = *p;
4568            if (c == '\\') {
4569                break;
4570            }
4571            if (!preserveSpaces) {
4572                if (quoted == 0 && isspace16(c)
4573                    && (c != ' ' || isspace16(*(p+1)))) {
4574                    break;
4575                }
4576                if (c == '"' && (quoted == 0 || quoted == '"')) {
4577                    break;
4578                }
4579                if (c == '\'' && (quoted == 0 || quoted == '\'')) {
4580                    /*
4581                     * In practice, when people write ' instead of \'
4582                     * in a string, they are doing it by accident
4583                     * instead of really meaning to use ' as a quoting
4584                     * character.  Warn them so they don't lose it.
4585                     */
4586                    if (outErrorMsg) {
4587                        *outErrorMsg = "Apostrophe not preceded by \\";
4588                    }
4589                    return false;
4590                }
4591            }
4592            p++;
4593        }
4594        if (p < (s+len)) {
4595            if (p > s) {
4596                tmp.append(String16(s, p-s));
4597            }
4598            if (!preserveSpaces && (*p == '"' || *p == '\'')) {
4599                if (quoted == 0) {
4600                    quoted = *p;
4601                } else {
4602                    quoted = 0;
4603                }
4604                p++;
4605            } else if (!preserveSpaces && isspace16(*p)) {
4606                // Space outside of a quote -- consume all spaces and
4607                // leave a single plain space char.
4608                tmp.append(String16(" "));
4609                p++;
4610                while (p < (s+len) && isspace16(*p)) {
4611                    p++;
4612                }
4613            } else if (*p == '\\') {
4614                p++;
4615                if (p < (s+len)) {
4616                    switch (*p) {
4617                    case 't':
4618                        tmp.append(String16("\t"));
4619                        break;
4620                    case 'n':
4621                        tmp.append(String16("\n"));
4622                        break;
4623                    case '#':
4624                        tmp.append(String16("#"));
4625                        break;
4626                    case '@':
4627                        tmp.append(String16("@"));
4628                        break;
4629                    case '?':
4630                        tmp.append(String16("?"));
4631                        break;
4632                    case '"':
4633                        tmp.append(String16("\""));
4634                        break;
4635                    case '\'':
4636                        tmp.append(String16("'"));
4637                        break;
4638                    case '\\':
4639                        tmp.append(String16("\\"));
4640                        break;
4641                    case 'u':
4642                    {
4643                        char16_t chr = 0;
4644                        int i = 0;
4645                        while (i < 4 && p[1] != 0) {
4646                            p++;
4647                            i++;
4648                            int c;
4649                            if (*p >= '0' && *p <= '9') {
4650                                c = *p - '0';
4651                            } else if (*p >= 'a' && *p <= 'f') {
4652                                c = *p - 'a' + 10;
4653                            } else if (*p >= 'A' && *p <= 'F') {
4654                                c = *p - 'A' + 10;
4655                            } else {
4656                                if (outErrorMsg) {
4657                                    *outErrorMsg = "Bad character in \\u unicode escape sequence";
4658                                }
4659                                return false;
4660                            }
4661                            chr = (chr<<4) | c;
4662                        }
4663                        tmp.append(String16(&chr, 1));
4664                    } break;
4665                    default:
4666                        // ignore unknown escape chars.
4667                        break;
4668                    }
4669                    p++;
4670                }
4671            }
4672            len -= (p-s);
4673            s = p;
4674        }
4675    }
4676
4677    if (tmp.size() != 0) {
4678        if (len > 0) {
4679            tmp.append(String16(s, len));
4680        }
4681        if (append) {
4682            outString->append(tmp);
4683        } else {
4684            outString->setTo(tmp);
4685        }
4686    } else {
4687        if (append) {
4688            outString->append(String16(s, len));
4689        } else {
4690            outString->setTo(s, len);
4691        }
4692    }
4693
4694    return true;
4695}
4696
4697size_t ResTable::getBasePackageCount() const
4698{
4699    if (mError != NO_ERROR) {
4700        return 0;
4701    }
4702    return mPackageGroups.size();
4703}
4704
4705const char16_t* ResTable::getBasePackageName(size_t idx) const
4706{
4707    if (mError != NO_ERROR) {
4708        return 0;
4709    }
4710    LOG_FATAL_IF(idx >= mPackageGroups.size(),
4711                 "Requested package index %d past package count %d",
4712                 (int)idx, (int)mPackageGroups.size());
4713    return mPackageGroups[idx]->name.string();
4714}
4715
4716uint32_t ResTable::getBasePackageId(size_t idx) const
4717{
4718    if (mError != NO_ERROR) {
4719        return 0;
4720    }
4721    LOG_FATAL_IF(idx >= mPackageGroups.size(),
4722                 "Requested package index %d past package count %d",
4723                 (int)idx, (int)mPackageGroups.size());
4724    return mPackageGroups[idx]->id;
4725}
4726
4727size_t ResTable::getTableCount() const
4728{
4729    return mHeaders.size();
4730}
4731
4732const ResStringPool* ResTable::getTableStringBlock(size_t index) const
4733{
4734    return &mHeaders[index]->values;
4735}
4736
4737void* ResTable::getTableCookie(size_t index) const
4738{
4739    return mHeaders[index]->cookie;
4740}
4741
4742void ResTable::getConfigurations(Vector<ResTable_config>* configs) const
4743{
4744    const size_t I = mPackageGroups.size();
4745    for (size_t i=0; i<I; i++) {
4746        const PackageGroup* packageGroup = mPackageGroups[i];
4747        const size_t J = packageGroup->packages.size();
4748        for (size_t j=0; j<J; j++) {
4749            const Package* package = packageGroup->packages[j];
4750            const size_t K = package->types.size();
4751            for (size_t k=0; k<K; k++) {
4752                const Type* type = package->types[k];
4753                if (type == NULL) continue;
4754                const size_t L = type->configs.size();
4755                for (size_t l=0; l<L; l++) {
4756                    const ResTable_type* config = type->configs[l];
4757                    const ResTable_config* cfg = &config->config;
4758                    // only insert unique
4759                    const size_t M = configs->size();
4760                    size_t m;
4761                    for (m=0; m<M; m++) {
4762                        if (0 == (*configs)[m].compare(*cfg)) {
4763                            break;
4764                        }
4765                    }
4766                    // if we didn't find it
4767                    if (m == M) {
4768                        configs->add(*cfg);
4769                    }
4770                }
4771            }
4772        }
4773    }
4774}
4775
4776void ResTable::getLocales(Vector<String8>* locales) const
4777{
4778    Vector<ResTable_config> configs;
4779    ALOGV("calling getConfigurations");
4780    getConfigurations(&configs);
4781    ALOGV("called getConfigurations size=%d", (int)configs.size());
4782    const size_t I = configs.size();
4783    for (size_t i=0; i<I; i++) {
4784        char locale[6];
4785        configs[i].getLocale(locale);
4786        const size_t J = locales->size();
4787        size_t j;
4788        for (j=0; j<J; j++) {
4789            if (0 == strcmp(locale, (*locales)[j].string())) {
4790                break;
4791            }
4792        }
4793        if (j == J) {
4794            locales->add(String8(locale));
4795        }
4796    }
4797}
4798
4799ssize_t ResTable::getEntry(
4800    const Package* package, int typeIndex, int entryIndex,
4801    const ResTable_config* config,
4802    const ResTable_type** outType, const ResTable_entry** outEntry,
4803    const Type** outTypeClass) const
4804{
4805    ALOGV("Getting entry from package %p\n", package);
4806    const ResTable_package* const pkg = package->package;
4807
4808    const Type* allTypes = package->getType(typeIndex);
4809    ALOGV("allTypes=%p\n", allTypes);
4810    if (allTypes == NULL) {
4811        ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
4812        return 0;
4813    }
4814
4815    if ((size_t)entryIndex >= allTypes->entryCount) {
4816        ALOGW("getEntry failing because entryIndex %d is beyond type entryCount %d",
4817            entryIndex, (int)allTypes->entryCount);
4818        return BAD_TYPE;
4819    }
4820
4821    const ResTable_type* type = NULL;
4822    uint32_t offset = ResTable_type::NO_ENTRY;
4823    ResTable_config bestConfig;
4824    memset(&bestConfig, 0, sizeof(bestConfig)); // make the compiler shut up
4825
4826    const size_t NT = allTypes->configs.size();
4827    for (size_t i=0; i<NT; i++) {
4828        const ResTable_type* const thisType = allTypes->configs[i];
4829        if (thisType == NULL) continue;
4830
4831        ResTable_config thisConfig;
4832        thisConfig.copyFromDtoH(thisType->config);
4833
4834        TABLE_GETENTRY(ALOGI("Match entry 0x%x in type 0x%x (sz 0x%x): %s\n",
4835                           entryIndex, typeIndex+1, dtohl(thisType->config.size),
4836                           thisConfig.toString().string()));
4837
4838        // Check to make sure this one is valid for the current parameters.
4839        if (config && !thisConfig.match(*config)) {
4840            TABLE_GETENTRY(ALOGI("Does not match config!\n"));
4841            continue;
4842        }
4843
4844        // Check if there is the desired entry in this type.
4845
4846        const uint8_t* const end = ((const uint8_t*)thisType)
4847            + dtohl(thisType->header.size);
4848        const uint32_t* const eindex = (const uint32_t*)
4849            (((const uint8_t*)thisType) + dtohs(thisType->header.headerSize));
4850
4851        uint32_t thisOffset = dtohl(eindex[entryIndex]);
4852        if (thisOffset == ResTable_type::NO_ENTRY) {
4853            TABLE_GETENTRY(ALOGI("Skipping because it is not defined!\n"));
4854            continue;
4855        }
4856
4857        if (type != NULL) {
4858            // Check if this one is less specific than the last found.  If so,
4859            // we will skip it.  We check starting with things we most care
4860            // about to those we least care about.
4861            if (!thisConfig.isBetterThan(bestConfig, config)) {
4862                TABLE_GETENTRY(ALOGI("This config is worse than last!\n"));
4863                continue;
4864            }
4865        }
4866
4867        type = thisType;
4868        offset = thisOffset;
4869        bestConfig = thisConfig;
4870        TABLE_GETENTRY(ALOGI("Best entry so far -- using it!\n"));
4871        if (!config) break;
4872    }
4873
4874    if (type == NULL) {
4875        TABLE_GETENTRY(ALOGI("No value found for requested entry!\n"));
4876        return BAD_INDEX;
4877    }
4878
4879    offset += dtohl(type->entriesStart);
4880    TABLE_NOISY(aout << "Looking in resource table " << package->header->header
4881          << ", typeOff="
4882          << (void*)(((const char*)type)-((const char*)package->header->header))
4883          << ", offset=" << (void*)offset << endl);
4884
4885    if (offset > (dtohl(type->header.size)-sizeof(ResTable_entry))) {
4886        ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
4887             offset, dtohl(type->header.size));
4888        return BAD_TYPE;
4889    }
4890    if ((offset&0x3) != 0) {
4891        ALOGW("ResTable_entry at 0x%x is not on an integer boundary",
4892             offset);
4893        return BAD_TYPE;
4894    }
4895
4896    const ResTable_entry* const entry = (const ResTable_entry*)
4897        (((const uint8_t*)type) + offset);
4898    if (dtohs(entry->size) < sizeof(*entry)) {
4899        ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
4900        return BAD_TYPE;
4901    }
4902
4903    *outType = type;
4904    *outEntry = entry;
4905    if (outTypeClass != NULL) {
4906        *outTypeClass = allTypes;
4907    }
4908    return offset + dtohs(entry->size);
4909}
4910
4911status_t ResTable::parsePackage(const ResTable_package* const pkg,
4912                                const Header* const header, uint32_t idmap_id)
4913{
4914    const uint8_t* base = (const uint8_t*)pkg;
4915    status_t err = validate_chunk(&pkg->header, sizeof(*pkg),
4916                                  header->dataEnd, "ResTable_package");
4917    if (err != NO_ERROR) {
4918        return (mError=err);
4919    }
4920
4921    const size_t pkgSize = dtohl(pkg->header.size);
4922
4923    if (dtohl(pkg->typeStrings) >= pkgSize) {
4924        ALOGW("ResTable_package type strings at %p are past chunk size %p.",
4925             (void*)dtohl(pkg->typeStrings), (void*)pkgSize);
4926        return (mError=BAD_TYPE);
4927    }
4928    if ((dtohl(pkg->typeStrings)&0x3) != 0) {
4929        ALOGW("ResTable_package type strings at %p is not on an integer boundary.",
4930             (void*)dtohl(pkg->typeStrings));
4931        return (mError=BAD_TYPE);
4932    }
4933    if (dtohl(pkg->keyStrings) >= pkgSize) {
4934        ALOGW("ResTable_package key strings at %p are past chunk size %p.",
4935             (void*)dtohl(pkg->keyStrings), (void*)pkgSize);
4936        return (mError=BAD_TYPE);
4937    }
4938    if ((dtohl(pkg->keyStrings)&0x3) != 0) {
4939        ALOGW("ResTable_package key strings at %p is not on an integer boundary.",
4940             (void*)dtohl(pkg->keyStrings));
4941        return (mError=BAD_TYPE);
4942    }
4943
4944    Package* package = NULL;
4945    PackageGroup* group = NULL;
4946    uint32_t id = idmap_id != 0 ? idmap_id : dtohl(pkg->id);
4947    // If at this point id == 0, pkg is an overlay package without a
4948    // corresponding idmap. During regular usage, overlay packages are
4949    // always loaded alongside their idmaps, but during idmap creation
4950    // the package is temporarily loaded by itself.
4951    if (id < 256) {
4952
4953        package = new Package(this, header, pkg);
4954        if (package == NULL) {
4955            return (mError=NO_MEMORY);
4956        }
4957
4958        size_t idx = mPackageMap[id];
4959        if (idx == 0) {
4960            idx = mPackageGroups.size()+1;
4961
4962            char16_t tmpName[sizeof(pkg->name)/sizeof(char16_t)];
4963            strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(char16_t));
4964            group = new PackageGroup(this, String16(tmpName), id);
4965            if (group == NULL) {
4966                delete package;
4967                return (mError=NO_MEMORY);
4968            }
4969
4970            err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
4971                                           header->dataEnd-(base+dtohl(pkg->typeStrings)));
4972            if (err != NO_ERROR) {
4973                delete group;
4974                delete package;
4975                return (mError=err);
4976            }
4977            err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
4978                                          header->dataEnd-(base+dtohl(pkg->keyStrings)));
4979            if (err != NO_ERROR) {
4980                delete group;
4981                delete package;
4982                return (mError=err);
4983            }
4984
4985            //printf("Adding new package id %d at index %d\n", id, idx);
4986            err = mPackageGroups.add(group);
4987            if (err < NO_ERROR) {
4988                return (mError=err);
4989            }
4990            group->basePackage = package;
4991
4992            mPackageMap[id] = (uint8_t)idx;
4993        } else {
4994            group = mPackageGroups.itemAt(idx-1);
4995            if (group == NULL) {
4996                return (mError=UNKNOWN_ERROR);
4997            }
4998        }
4999        err = group->packages.add(package);
5000        if (err < NO_ERROR) {
5001            return (mError=err);
5002        }
5003    } else {
5004        LOG_ALWAYS_FATAL("Package id out of range");
5005        return NO_ERROR;
5006    }
5007
5008
5009    // Iterate through all chunks.
5010    size_t curPackage = 0;
5011
5012    const ResChunk_header* chunk =
5013        (const ResChunk_header*)(((const uint8_t*)pkg)
5014                                 + dtohs(pkg->header.headerSize));
5015    const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
5016    while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
5017           ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
5018        TABLE_NOISY(ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
5019                         dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
5020                         (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
5021        const size_t csize = dtohl(chunk->size);
5022        const uint16_t ctype = dtohs(chunk->type);
5023        if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
5024            const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
5025            err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
5026                                 endPos, "ResTable_typeSpec");
5027            if (err != NO_ERROR) {
5028                return (mError=err);
5029            }
5030
5031            const size_t typeSpecSize = dtohl(typeSpec->header.size);
5032
5033            LOAD_TABLE_NOISY(printf("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5034                                    (void*)(base-(const uint8_t*)chunk),
5035                                    dtohs(typeSpec->header.type),
5036                                    dtohs(typeSpec->header.headerSize),
5037                                    (void*)typeSize));
5038            // look for block overrun or int overflow when multiplying by 4
5039            if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
5040                    || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*dtohl(typeSpec->entryCount))
5041                    > typeSpecSize)) {
5042                ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
5043                     (void*)(dtohs(typeSpec->header.headerSize)
5044                             +(sizeof(uint32_t)*dtohl(typeSpec->entryCount))),
5045                     (void*)typeSpecSize);
5046                return (mError=BAD_TYPE);
5047            }
5048
5049            if (typeSpec->id == 0) {
5050                ALOGW("ResTable_type has an id of 0.");
5051                return (mError=BAD_TYPE);
5052            }
5053
5054            while (package->types.size() < typeSpec->id) {
5055                package->types.add(NULL);
5056            }
5057            Type* t = package->types[typeSpec->id-1];
5058            if (t == NULL) {
5059                t = new Type(header, package, dtohl(typeSpec->entryCount));
5060                package->types.editItemAt(typeSpec->id-1) = t;
5061            } else if (dtohl(typeSpec->entryCount) != t->entryCount) {
5062                ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
5063                    (int)dtohl(typeSpec->entryCount), (int)t->entryCount);
5064                return (mError=BAD_TYPE);
5065            }
5066            t->typeSpecFlags = (const uint32_t*)(
5067                    ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
5068            t->typeSpec = typeSpec;
5069
5070        } else if (ctype == RES_TABLE_TYPE_TYPE) {
5071            const ResTable_type* type = (const ResTable_type*)(chunk);
5072            err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
5073                                 endPos, "ResTable_type");
5074            if (err != NO_ERROR) {
5075                return (mError=err);
5076            }
5077
5078            const size_t typeSize = dtohl(type->header.size);
5079
5080            LOAD_TABLE_NOISY(printf("Type off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5081                                    (void*)(base-(const uint8_t*)chunk),
5082                                    dtohs(type->header.type),
5083                                    dtohs(type->header.headerSize),
5084                                    (void*)typeSize));
5085            if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*dtohl(type->entryCount))
5086                > typeSize) {
5087                ALOGW("ResTable_type entry index to %p extends beyond chunk end %p.",
5088                     (void*)(dtohs(type->header.headerSize)
5089                             +(sizeof(uint32_t)*dtohl(type->entryCount))),
5090                     (void*)typeSize);
5091                return (mError=BAD_TYPE);
5092            }
5093            if (dtohl(type->entryCount) != 0
5094                && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
5095                ALOGW("ResTable_type entriesStart at %p extends beyond chunk end %p.",
5096                     (void*)dtohl(type->entriesStart), (void*)typeSize);
5097                return (mError=BAD_TYPE);
5098            }
5099            if (type->id == 0) {
5100                ALOGW("ResTable_type has an id of 0.");
5101                return (mError=BAD_TYPE);
5102            }
5103
5104            while (package->types.size() < type->id) {
5105                package->types.add(NULL);
5106            }
5107            Type* t = package->types[type->id-1];
5108            if (t == NULL) {
5109                t = new Type(header, package, dtohl(type->entryCount));
5110                package->types.editItemAt(type->id-1) = t;
5111            } else if (dtohl(type->entryCount) != t->entryCount) {
5112                ALOGW("ResTable_type entry count inconsistent: given %d, previously %d",
5113                    (int)dtohl(type->entryCount), (int)t->entryCount);
5114                return (mError=BAD_TYPE);
5115            }
5116
5117            TABLE_GETENTRY(
5118                ResTable_config thisConfig;
5119                thisConfig.copyFromDtoH(type->config);
5120                ALOGI("Adding config to type %d: %s\n",
5121                      type->id, thisConfig.toString().string()));
5122            t->configs.add(type);
5123        } else {
5124            status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
5125                                          endPos, "ResTable_package:unknown");
5126            if (err != NO_ERROR) {
5127                return (mError=err);
5128            }
5129        }
5130        chunk = (const ResChunk_header*)
5131            (((const uint8_t*)chunk) + csize);
5132    }
5133
5134    if (group->typeCount == 0) {
5135        group->typeCount = package->types.size();
5136    }
5137
5138    return NO_ERROR;
5139}
5140
5141status_t ResTable::createIdmap(const ResTable& overlay, uint32_t originalCrc, uint32_t overlayCrc,
5142                               void** outData, size_t* outSize) const
5143{
5144    // see README for details on the format of map
5145    if (mPackageGroups.size() == 0) {
5146        return UNKNOWN_ERROR;
5147    }
5148    if (mPackageGroups[0]->packages.size() == 0) {
5149        return UNKNOWN_ERROR;
5150    }
5151
5152    Vector<Vector<uint32_t> > map;
5153    const PackageGroup* pg = mPackageGroups[0];
5154    const Package* pkg = pg->packages[0];
5155    size_t typeCount = pkg->types.size();
5156    // starting size is header + first item (number of types in map)
5157    *outSize = (IDMAP_HEADER_SIZE + 1) * sizeof(uint32_t);
5158    const String16 overlayPackage(overlay.mPackageGroups[0]->packages[0]->package->name);
5159    const uint32_t pkg_id = pkg->package->id << 24;
5160
5161    for (size_t typeIndex = 0; typeIndex < typeCount; ++typeIndex) {
5162        ssize_t offset = -1;
5163        const Type* typeConfigs = pkg->getType(typeIndex);
5164        ssize_t mapIndex = map.add();
5165        if (mapIndex < 0) {
5166            return NO_MEMORY;
5167        }
5168        Vector<uint32_t>& vector = map.editItemAt(mapIndex);
5169        for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
5170            uint32_t resID = pkg_id
5171                | (0x00ff0000 & ((typeIndex+1)<<16))
5172                | (0x0000ffff & (entryIndex));
5173            resource_name resName;
5174            if (!this->getResourceName(resID, &resName)) {
5175                ALOGW("idmap: resource 0x%08x has spec but lacks values, skipping\n", resID);
5176                continue;
5177            }
5178
5179            const String16 overlayType(resName.type, resName.typeLen);
5180            const String16 overlayName(resName.name, resName.nameLen);
5181            uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
5182                                                              overlayName.size(),
5183                                                              overlayType.string(),
5184                                                              overlayType.size(),
5185                                                              overlayPackage.string(),
5186                                                              overlayPackage.size());
5187            if (overlayResID != 0) {
5188                overlayResID = pkg_id | (0x00ffffff & overlayResID);
5189            }
5190            vector.push(overlayResID);
5191            if (overlayResID != 0 && offset == -1) {
5192                offset = Res_GETENTRY(resID);
5193            }
5194#if 0
5195            if (overlayResID != 0) {
5196                ALOGD("%s/%s 0x%08x -> 0x%08x\n",
5197                     String8(String16(resName.type)).string(),
5198                     String8(String16(resName.name)).string(),
5199                     resID, overlayResID);
5200            }
5201#endif
5202        }
5203
5204        if (offset != -1) {
5205            // shave off leading and trailing entries which lack overlay values
5206            vector.removeItemsAt(0, offset);
5207            vector.insertAt((uint32_t)offset, 0, 1);
5208            while (vector.top() == 0) {
5209                vector.pop();
5210            }
5211            // reserve space for number and offset of entries, and the actual entries
5212            *outSize += (2 + vector.size()) * sizeof(uint32_t);
5213        } else {
5214            // no entries of current type defined in overlay package
5215            vector.clear();
5216            // reserve space for type offset
5217            *outSize += 1 * sizeof(uint32_t);
5218        }
5219    }
5220
5221    if ((*outData = malloc(*outSize)) == NULL) {
5222        return NO_MEMORY;
5223    }
5224    uint32_t* data = (uint32_t*)*outData;
5225    *data++ = htodl(IDMAP_MAGIC);
5226    *data++ = htodl(originalCrc);
5227    *data++ = htodl(overlayCrc);
5228    const size_t mapSize = map.size();
5229    *data++ = htodl(mapSize);
5230    size_t offset = mapSize;
5231    for (size_t i = 0; i < mapSize; ++i) {
5232        const Vector<uint32_t>& vector = map.itemAt(i);
5233        const size_t N = vector.size();
5234        if (N == 0) {
5235            *data++ = htodl(0);
5236        } else {
5237            offset++;
5238            *data++ = htodl(offset);
5239            offset += N;
5240        }
5241    }
5242    for (size_t i = 0; i < mapSize; ++i) {
5243        const Vector<uint32_t>& vector = map.itemAt(i);
5244        const size_t N = vector.size();
5245        if (N == 0) {
5246            continue;
5247        }
5248        *data++ = htodl(N - 1); // do not count the offset (which is vector's first element)
5249        for (size_t j = 0; j < N; ++j) {
5250            const uint32_t& overlayResID = vector.itemAt(j);
5251            *data++ = htodl(overlayResID);
5252        }
5253    }
5254
5255    return NO_ERROR;
5256}
5257
5258bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
5259                            uint32_t* pOriginalCrc, uint32_t* pOverlayCrc)
5260{
5261    const uint32_t* map = (const uint32_t*)idmap;
5262    if (!assertIdmapHeader(map, sizeBytes)) {
5263        return false;
5264    }
5265    *pOriginalCrc = map[1];
5266    *pOverlayCrc = map[2];
5267    return true;
5268}
5269
5270
5271#ifndef HAVE_ANDROID_OS
5272#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
5273
5274#define CHAR16_ARRAY_EQ(constant, var, len) \
5275        ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
5276
5277void print_complex(uint32_t complex, bool isFraction)
5278{
5279    const float MANTISSA_MULT =
5280        1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
5281    const float RADIX_MULTS[] = {
5282        1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
5283        1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
5284    };
5285
5286    float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
5287                   <<Res_value::COMPLEX_MANTISSA_SHIFT))
5288            * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
5289                            & Res_value::COMPLEX_RADIX_MASK];
5290    printf("%f", value);
5291
5292    if (!isFraction) {
5293        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
5294            case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
5295            case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
5296            case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
5297            case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
5298            case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
5299            case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
5300            default: printf(" (unknown unit)"); break;
5301        }
5302    } else {
5303        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
5304            case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
5305            case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
5306            default: printf(" (unknown unit)"); break;
5307        }
5308    }
5309}
5310
5311// Normalize a string for output
5312String8 ResTable::normalizeForOutput( const char *input )
5313{
5314    String8 ret;
5315    char buff[2];
5316    buff[1] = '\0';
5317
5318    while (*input != '\0') {
5319        switch (*input) {
5320            // All interesting characters are in the ASCII zone, so we are making our own lives
5321            // easier by scanning the string one byte at a time.
5322        case '\\':
5323            ret += "\\\\";
5324            break;
5325        case '\n':
5326            ret += "\\n";
5327            break;
5328        case '"':
5329            ret += "\\\"";
5330            break;
5331        default:
5332            buff[0] = *input;
5333            ret += buff;
5334            break;
5335        }
5336
5337        input++;
5338    }
5339
5340    return ret;
5341}
5342
5343void ResTable::print_value(const Package* pkg, const Res_value& value) const
5344{
5345    if (value.dataType == Res_value::TYPE_NULL) {
5346        printf("(null)\n");
5347    } else if (value.dataType == Res_value::TYPE_REFERENCE) {
5348        printf("(reference) 0x%08x\n", value.data);
5349    } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
5350        printf("(attribute) 0x%08x\n", value.data);
5351    } else if (value.dataType == Res_value::TYPE_STRING) {
5352        size_t len;
5353        const char* str8 = pkg->header->values.string8At(
5354                value.data, &len);
5355        if (str8 != NULL) {
5356            printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
5357        } else {
5358            const char16_t* str16 = pkg->header->values.stringAt(
5359                    value.data, &len);
5360            if (str16 != NULL) {
5361                printf("(string16) \"%s\"\n",
5362                    normalizeForOutput(String8(str16, len).string()).string());
5363            } else {
5364                printf("(string) null\n");
5365            }
5366        }
5367    } else if (value.dataType == Res_value::TYPE_FLOAT) {
5368        printf("(float) %g\n", *(const float*)&value.data);
5369    } else if (value.dataType == Res_value::TYPE_DIMENSION) {
5370        printf("(dimension) ");
5371        print_complex(value.data, false);
5372        printf("\n");
5373    } else if (value.dataType == Res_value::TYPE_FRACTION) {
5374        printf("(fraction) ");
5375        print_complex(value.data, true);
5376        printf("\n");
5377    } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
5378            || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
5379        printf("(color) #%08x\n", value.data);
5380    } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
5381        printf("(boolean) %s\n", value.data ? "true" : "false");
5382    } else if (value.dataType >= Res_value::TYPE_FIRST_INT
5383            || value.dataType <= Res_value::TYPE_LAST_INT) {
5384        printf("(int) 0x%08x or %d\n", value.data, value.data);
5385    } else {
5386        printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
5387               (int)value.dataType, (int)value.data,
5388               (int)value.size, (int)value.res0);
5389    }
5390}
5391
5392void ResTable::print(bool inclValues) const
5393{
5394    if (mError != 0) {
5395        printf("mError=0x%x (%s)\n", mError, strerror(mError));
5396    }
5397#if 0
5398    printf("mParams=%c%c-%c%c,\n",
5399            mParams.language[0], mParams.language[1],
5400            mParams.country[0], mParams.country[1]);
5401#endif
5402    size_t pgCount = mPackageGroups.size();
5403    printf("Package Groups (%d)\n", (int)pgCount);
5404    for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
5405        const PackageGroup* pg = mPackageGroups[pgIndex];
5406        printf("Package Group %d id=%d packageCount=%d name=%s\n",
5407                (int)pgIndex, pg->id, (int)pg->packages.size(),
5408                String8(pg->name).string());
5409
5410        size_t pkgCount = pg->packages.size();
5411        for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
5412            const Package* pkg = pg->packages[pkgIndex];
5413            size_t typeCount = pkg->types.size();
5414            printf("  Package %d id=%d name=%s typeCount=%d\n", (int)pkgIndex,
5415                    pkg->package->id, String8(String16(pkg->package->name)).string(),
5416                    (int)typeCount);
5417            for (size_t typeIndex=0; typeIndex<typeCount; typeIndex++) {
5418                const Type* typeConfigs = pkg->getType(typeIndex);
5419                if (typeConfigs == NULL) {
5420                    printf("    type %d NULL\n", (int)typeIndex);
5421                    continue;
5422                }
5423                const size_t NTC = typeConfigs->configs.size();
5424                printf("    type %d configCount=%d entryCount=%d\n",
5425                       (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
5426                if (typeConfigs->typeSpecFlags != NULL) {
5427                    for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
5428                        uint32_t resID = (0xff000000 & ((pkg->package->id)<<24))
5429                                    | (0x00ff0000 & ((typeIndex+1)<<16))
5430                                    | (0x0000ffff & (entryIndex));
5431                        resource_name resName;
5432                        if (this->getResourceName(resID, &resName)) {
5433                            printf("      spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
5434                                resID,
5435                                CHAR16_TO_CSTR(resName.package, resName.packageLen),
5436                                CHAR16_TO_CSTR(resName.type, resName.typeLen),
5437                                CHAR16_TO_CSTR(resName.name, resName.nameLen),
5438                                dtohl(typeConfigs->typeSpecFlags[entryIndex]));
5439                        } else {
5440                            printf("      INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
5441                        }
5442                    }
5443                }
5444                for (size_t configIndex=0; configIndex<NTC; configIndex++) {
5445                    const ResTable_type* type = typeConfigs->configs[configIndex];
5446                    if ((((uint64_t)type)&0x3) != 0) {
5447                        printf("      NON-INTEGER ResTable_type ADDRESS: %p\n", type);
5448                        continue;
5449                    }
5450                    String8 configStr = type->config.toString();
5451                    printf("      config %s:\n", configStr.size() > 0
5452                            ? configStr.string() : "(default)");
5453                    size_t entryCount = dtohl(type->entryCount);
5454                    uint32_t entriesStart = dtohl(type->entriesStart);
5455                    if ((entriesStart&0x3) != 0) {
5456                        printf("      NON-INTEGER ResTable_type entriesStart OFFSET: %p\n", (void*)entriesStart);
5457                        continue;
5458                    }
5459                    uint32_t typeSize = dtohl(type->header.size);
5460                    if ((typeSize&0x3) != 0) {
5461                        printf("      NON-INTEGER ResTable_type header.size: %p\n", (void*)typeSize);
5462                        continue;
5463                    }
5464                    for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
5465
5466                        const uint8_t* const end = ((const uint8_t*)type)
5467                            + dtohl(type->header.size);
5468                        const uint32_t* const eindex = (const uint32_t*)
5469                            (((const uint8_t*)type) + dtohs(type->header.headerSize));
5470
5471                        uint32_t thisOffset = dtohl(eindex[entryIndex]);
5472                        if (thisOffset == ResTable_type::NO_ENTRY) {
5473                            continue;
5474                        }
5475
5476                        uint32_t resID = (0xff000000 & ((pkg->package->id)<<24))
5477                                    | (0x00ff0000 & ((typeIndex+1)<<16))
5478                                    | (0x0000ffff & (entryIndex));
5479                        resource_name resName;
5480                        if (this->getResourceName(resID, &resName)) {
5481                            printf("        resource 0x%08x %s:%s/%s: ", resID,
5482                                    CHAR16_TO_CSTR(resName.package, resName.packageLen),
5483                                    CHAR16_TO_CSTR(resName.type, resName.typeLen),
5484                                    CHAR16_TO_CSTR(resName.name, resName.nameLen));
5485                        } else {
5486                            printf("        INVALID RESOURCE 0x%08x: ", resID);
5487                        }
5488                        if ((thisOffset&0x3) != 0) {
5489                            printf("NON-INTEGER OFFSET: %p\n", (void*)thisOffset);
5490                            continue;
5491                        }
5492                        if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
5493                            printf("OFFSET OUT OF BOUNDS: %p+%p (size is %p)\n",
5494                                   (void*)entriesStart, (void*)thisOffset,
5495                                   (void*)typeSize);
5496                            continue;
5497                        }
5498
5499                        const ResTable_entry* ent = (const ResTable_entry*)
5500                            (((const uint8_t*)type) + entriesStart + thisOffset);
5501                        if (((entriesStart + thisOffset)&0x3) != 0) {
5502                            printf("NON-INTEGER ResTable_entry OFFSET: %p\n",
5503                                 (void*)(entriesStart + thisOffset));
5504                            continue;
5505                        }
5506
5507                        uint16_t esize = dtohs(ent->size);
5508                        if ((esize&0x3) != 0) {
5509                            printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void*)esize);
5510                            continue;
5511                        }
5512                        if ((thisOffset+esize) > typeSize) {
5513                            printf("ResTable_entry OUT OF BOUNDS: %p+%p+%p (size is %p)\n",
5514                                   (void*)entriesStart, (void*)thisOffset,
5515                                   (void*)esize, (void*)typeSize);
5516                            continue;
5517                        }
5518
5519                        const Res_value* valuePtr = NULL;
5520                        const ResTable_map_entry* bagPtr = NULL;
5521                        Res_value value;
5522                        if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
5523                            printf("<bag>");
5524                            bagPtr = (const ResTable_map_entry*)ent;
5525                        } else {
5526                            valuePtr = (const Res_value*)
5527                                (((const uint8_t*)ent) + esize);
5528                            value.copyFrom_dtoh(*valuePtr);
5529                            printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
5530                                   (int)value.dataType, (int)value.data,
5531                                   (int)value.size, (int)value.res0);
5532                        }
5533
5534                        if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
5535                            printf(" (PUBLIC)");
5536                        }
5537                        printf("\n");
5538
5539                        if (inclValues) {
5540                            if (valuePtr != NULL) {
5541                                printf("          ");
5542                                print_value(pkg, value);
5543                            } else if (bagPtr != NULL) {
5544                                const int N = dtohl(bagPtr->count);
5545                                const uint8_t* baseMapPtr = (const uint8_t*)ent;
5546                                size_t mapOffset = esize;
5547                                const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
5548                                printf("          Parent=0x%08x, Count=%d\n",
5549                                    dtohl(bagPtr->parent.ident), N);
5550                                for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
5551                                    printf("          #%i (Key=0x%08x): ",
5552                                        i, dtohl(mapPtr->name.ident));
5553                                    value.copyFrom_dtoh(mapPtr->value);
5554                                    print_value(pkg, value);
5555                                    const size_t size = dtohs(mapPtr->value.size);
5556                                    mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
5557                                    mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
5558                                }
5559                            }
5560                        }
5561                    }
5562                }
5563            }
5564        }
5565    }
5566}
5567
5568#endif // HAVE_ANDROID_OS
5569
5570}   // namespace android
5571