ResourceTypes.cpp revision 8a802dbdabdfd27692c2e38b2c3adafe95566106 
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 ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1474        return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1475    }
1476    if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1477        return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1478    }
1479    if (screenWidthDp != o.screenWidthDp) {
1480        return screenWidthDp < o.screenWidthDp ? -1 : 1;
1481    }
1482    if (screenHeightDp != o.screenHeightDp) {
1483        return screenHeightDp < o.screenHeightDp ? -1 : 1;
1484    }
1485    if (screenWidth != o.screenWidth) {
1486        return screenWidth < o.screenWidth ? -1 : 1;
1487    }
1488    if (screenHeight != o.screenHeight) {
1489        return screenHeight < o.screenHeight ? -1 : 1;
1490    }
1491    if (density != o.density) {
1492        return density < o.density ? -1 : 1;
1493    }
1494    if (orientation != o.orientation) {
1495        return orientation < o.orientation ? -1 : 1;
1496    }
1497    if (touchscreen != o.touchscreen) {
1498        return touchscreen < o.touchscreen ? -1 : 1;
1499    }
1500    if (input != o.input) {
1501        return input < o.input ? -1 : 1;
1502    }
1503    if (screenLayout != o.screenLayout) {
1504        return screenLayout < o.screenLayout ? -1 : 1;
1505    }
1506    if (uiMode != o.uiMode) {
1507        return uiMode < o.uiMode ? -1 : 1;
1508    }
1509    if (version != o.version) {
1510        return version < o.version ? -1 : 1;
1511    }
1512    return 0;
1513}
1514
1515int ResTable_config::diff(const ResTable_config& o) const {
1516    int diffs = 0;
1517    if (mcc != o.mcc) diffs |= CONFIG_MCC;
1518    if (mnc != o.mnc) diffs |= CONFIG_MNC;
1519    if (locale != o.locale) diffs |= CONFIG_LOCALE;
1520    if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1521    if (density != o.density) diffs |= CONFIG_DENSITY;
1522    if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1523    if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1524            diffs |= CONFIG_KEYBOARD_HIDDEN;
1525    if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1526    if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1527    if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1528    if (version != o.version) diffs |= CONFIG_VERSION;
1529    if (screenLayout != o.screenLayout) diffs |= CONFIG_SCREEN_LAYOUT;
1530    if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1531    if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1532    if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1533    return diffs;
1534}
1535
1536bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
1537    // The order of the following tests defines the importance of one
1538    // configuration parameter over another.  Those tests first are more
1539    // important, trumping any values in those following them.
1540    if (imsi || o.imsi) {
1541        if (mcc != o.mcc) {
1542            if (!mcc) return false;
1543            if (!o.mcc) return true;
1544        }
1545
1546        if (mnc != o.mnc) {
1547            if (!mnc) return false;
1548            if (!o.mnc) return true;
1549        }
1550    }
1551
1552    if (locale || o.locale) {
1553        if (language[0] != o.language[0]) {
1554            if (!language[0]) return false;
1555            if (!o.language[0]) return true;
1556        }
1557
1558        if (country[0] != o.country[0]) {
1559            if (!country[0]) return false;
1560            if (!o.country[0]) return true;
1561        }
1562    }
1563
1564    if (screenLayout || o.screenLayout) {
1565        if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
1566            if (!(screenLayout & MASK_LAYOUTDIR)) return false;
1567            if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
1568        }
1569    }
1570
1571    if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1572        if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1573            if (!smallestScreenWidthDp) return false;
1574            if (!o.smallestScreenWidthDp) return true;
1575        }
1576    }
1577
1578    if (screenSizeDp || o.screenSizeDp) {
1579        if (screenWidthDp != o.screenWidthDp) {
1580            if (!screenWidthDp) return false;
1581            if (!o.screenWidthDp) return true;
1582        }
1583
1584        if (screenHeightDp != o.screenHeightDp) {
1585            if (!screenHeightDp) return false;
1586            if (!o.screenHeightDp) return true;
1587        }
1588    }
1589
1590    if (screenLayout || o.screenLayout) {
1591        if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
1592            if (!(screenLayout & MASK_SCREENSIZE)) return false;
1593            if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
1594        }
1595        if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
1596            if (!(screenLayout & MASK_SCREENLONG)) return false;
1597            if (!(o.screenLayout & MASK_SCREENLONG)) return true;
1598        }
1599    }
1600
1601    if (orientation != o.orientation) {
1602        if (!orientation) return false;
1603        if (!o.orientation) return true;
1604    }
1605
1606    if (uiMode || o.uiMode) {
1607        if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
1608            if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
1609            if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
1610        }
1611        if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
1612            if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
1613            if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
1614        }
1615    }
1616
1617    // density is never 'more specific'
1618    // as the default just equals 160
1619
1620    if (touchscreen != o.touchscreen) {
1621        if (!touchscreen) return false;
1622        if (!o.touchscreen) return true;
1623    }
1624
1625    if (input || o.input) {
1626        if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
1627            if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
1628            if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
1629        }
1630
1631        if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
1632            if (!(inputFlags & MASK_NAVHIDDEN)) return false;
1633            if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
1634        }
1635
1636        if (keyboard != o.keyboard) {
1637            if (!keyboard) return false;
1638            if (!o.keyboard) return true;
1639        }
1640
1641        if (navigation != o.navigation) {
1642            if (!navigation) return false;
1643            if (!o.navigation) return true;
1644        }
1645    }
1646
1647    if (screenSize || o.screenSize) {
1648        if (screenWidth != o.screenWidth) {
1649            if (!screenWidth) return false;
1650            if (!o.screenWidth) return true;
1651        }
1652
1653        if (screenHeight != o.screenHeight) {
1654            if (!screenHeight) return false;
1655            if (!o.screenHeight) return true;
1656        }
1657    }
1658
1659    if (version || o.version) {
1660        if (sdkVersion != o.sdkVersion) {
1661            if (!sdkVersion) return false;
1662            if (!o.sdkVersion) return true;
1663        }
1664
1665        if (minorVersion != o.minorVersion) {
1666            if (!minorVersion) return false;
1667            if (!o.minorVersion) return true;
1668        }
1669    }
1670    return false;
1671}
1672
1673bool ResTable_config::isBetterThan(const ResTable_config& o,
1674        const ResTable_config* requested) const {
1675    if (requested) {
1676        if (imsi || o.imsi) {
1677            if ((mcc != o.mcc) && requested->mcc) {
1678                return (mcc);
1679            }
1680
1681            if ((mnc != o.mnc) && requested->mnc) {
1682                return (mnc);
1683            }
1684        }
1685
1686        if (locale || o.locale) {
1687            if ((language[0] != o.language[0]) && requested->language[0]) {
1688                return (language[0]);
1689            }
1690
1691            if ((country[0] != o.country[0]) && requested->country[0]) {
1692                return (country[0]);
1693            }
1694        }
1695
1696        if (screenLayout || o.screenLayout) {
1697            if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
1698                    && (requested->screenLayout & MASK_LAYOUTDIR)) {
1699                int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
1700                int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
1701                return (myLayoutDir > oLayoutDir);
1702            }
1703        }
1704
1705        if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1706            // The configuration closest to the actual size is best.
1707            // We assume that larger configs have already been filtered
1708            // out at this point.  That means we just want the largest one.
1709            if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1710                return smallestScreenWidthDp > o.smallestScreenWidthDp;
1711            }
1712        }
1713
1714        if (screenSizeDp || o.screenSizeDp) {
1715            // "Better" is based on the sum of the difference between both
1716            // width and height from the requested dimensions.  We are
1717            // assuming the invalid configs (with smaller dimens) have
1718            // already been filtered.  Note that if a particular dimension
1719            // is unspecified, we will end up with a large value (the
1720            // difference between 0 and the requested dimension), which is
1721            // good since we will prefer a config that has specified a
1722            // dimension value.
1723            int myDelta = 0, otherDelta = 0;
1724            if (requested->screenWidthDp) {
1725                myDelta += requested->screenWidthDp - screenWidthDp;
1726                otherDelta += requested->screenWidthDp - o.screenWidthDp;
1727            }
1728            if (requested->screenHeightDp) {
1729                myDelta += requested->screenHeightDp - screenHeightDp;
1730                otherDelta += requested->screenHeightDp - o.screenHeightDp;
1731            }
1732            //ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
1733            //    screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
1734            //    requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
1735            if (myDelta != otherDelta) {
1736                return myDelta < otherDelta;
1737            }
1738        }
1739
1740        if (screenLayout || o.screenLayout) {
1741            if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
1742                    && (requested->screenLayout & MASK_SCREENSIZE)) {
1743                // A little backwards compatibility here: undefined is
1744                // considered equivalent to normal.  But only if the
1745                // requested size is at least normal; otherwise, small
1746                // is better than the default.
1747                int mySL = (screenLayout & MASK_SCREENSIZE);
1748                int oSL = (o.screenLayout & MASK_SCREENSIZE);
1749                int fixedMySL = mySL;
1750                int fixedOSL = oSL;
1751                if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
1752                    if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
1753                    if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
1754                }
1755                // For screen size, the best match is the one that is
1756                // closest to the requested screen size, but not over
1757                // (the not over part is dealt with in match() below).
1758                if (fixedMySL == fixedOSL) {
1759                    // If the two are the same, but 'this' is actually
1760                    // undefined, then the other is really a better match.
1761                    if (mySL == 0) return false;
1762                    return true;
1763                }
1764                if (fixedMySL != fixedOSL) {
1765                    return fixedMySL > fixedOSL;
1766                }
1767            }
1768            if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
1769                    && (requested->screenLayout & MASK_SCREENLONG)) {
1770                return (screenLayout & MASK_SCREENLONG);
1771            }
1772        }
1773
1774        if ((orientation != o.orientation) && requested->orientation) {
1775            return (orientation);
1776        }
1777
1778        if (uiMode || o.uiMode) {
1779            if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
1780                    && (requested->uiMode & MASK_UI_MODE_TYPE)) {
1781                return (uiMode & MASK_UI_MODE_TYPE);
1782            }
1783            if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
1784                    && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
1785                return (uiMode & MASK_UI_MODE_NIGHT);
1786            }
1787        }
1788
1789        if (screenType || o.screenType) {
1790            if (density != o.density) {
1791                // density is tough.  Any density is potentially useful
1792                // because the system will scale it.  Scaling down
1793                // is generally better than scaling up.
1794                // Default density counts as 160dpi (the system default)
1795                // TODO - remove 160 constants
1796                int h = (density?density:160);
1797                int l = (o.density?o.density:160);
1798                bool bImBigger = true;
1799                if (l > h) {
1800                    int t = h;
1801                    h = l;
1802                    l = t;
1803                    bImBigger = false;
1804                }
1805
1806                int reqValue = (requested->density?requested->density:160);
1807                if (reqValue >= h) {
1808                    // requested value higher than both l and h, give h
1809                    return bImBigger;
1810                }
1811                if (l >= reqValue) {
1812                    // requested value lower than both l and h, give l
1813                    return !bImBigger;
1814                }
1815                // saying that scaling down is 2x better than up
1816                if (((2 * l) - reqValue) * h > reqValue * reqValue) {
1817                    return !bImBigger;
1818                } else {
1819                    return bImBigger;
1820                }
1821            }
1822
1823            if ((touchscreen != o.touchscreen) && requested->touchscreen) {
1824                return (touchscreen);
1825            }
1826        }
1827
1828        if (input || o.input) {
1829            const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
1830            const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
1831            if (keysHidden != oKeysHidden) {
1832                const int reqKeysHidden =
1833                        requested->inputFlags & MASK_KEYSHIDDEN;
1834                if (reqKeysHidden) {
1835
1836                    if (!keysHidden) return false;
1837                    if (!oKeysHidden) return true;
1838                    // For compatibility, we count KEYSHIDDEN_NO as being
1839                    // the same as KEYSHIDDEN_SOFT.  Here we disambiguate
1840                    // these by making an exact match more specific.
1841                    if (reqKeysHidden == keysHidden) return true;
1842                    if (reqKeysHidden == oKeysHidden) return false;
1843                }
1844            }
1845
1846            const int navHidden = inputFlags & MASK_NAVHIDDEN;
1847            const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
1848            if (navHidden != oNavHidden) {
1849                const int reqNavHidden =
1850                        requested->inputFlags & MASK_NAVHIDDEN;
1851                if (reqNavHidden) {
1852
1853                    if (!navHidden) return false;
1854                    if (!oNavHidden) return true;
1855                }
1856            }
1857
1858            if ((keyboard != o.keyboard) && requested->keyboard) {
1859                return (keyboard);
1860            }
1861
1862            if ((navigation != o.navigation) && requested->navigation) {
1863                return (navigation);
1864            }
1865        }
1866
1867        if (screenSize || o.screenSize) {
1868            // "Better" is based on the sum of the difference between both
1869            // width and height from the requested dimensions.  We are
1870            // assuming the invalid configs (with smaller sizes) have
1871            // already been filtered.  Note that if a particular dimension
1872            // is unspecified, we will end up with a large value (the
1873            // difference between 0 and the requested dimension), which is
1874            // good since we will prefer a config that has specified a
1875            // size value.
1876            int myDelta = 0, otherDelta = 0;
1877            if (requested->screenWidth) {
1878                myDelta += requested->screenWidth - screenWidth;
1879                otherDelta += requested->screenWidth - o.screenWidth;
1880            }
1881            if (requested->screenHeight) {
1882                myDelta += requested->screenHeight - screenHeight;
1883                otherDelta += requested->screenHeight - o.screenHeight;
1884            }
1885            if (myDelta != otherDelta) {
1886                return myDelta < otherDelta;
1887            }
1888        }
1889
1890        if (version || o.version) {
1891            if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
1892                return (sdkVersion > o.sdkVersion);
1893            }
1894
1895            if ((minorVersion != o.minorVersion) &&
1896                    requested->minorVersion) {
1897                return (minorVersion);
1898            }
1899        }
1900
1901        return false;
1902    }
1903    return isMoreSpecificThan(o);
1904}
1905
1906bool ResTable_config::match(const ResTable_config& settings) const {
1907    if (imsi != 0) {
1908        if (mcc != 0 && mcc != settings.mcc) {
1909            return false;
1910        }
1911        if (mnc != 0 && mnc != settings.mnc) {
1912            return false;
1913        }
1914    }
1915    if (locale != 0) {
1916        if (language[0] != 0
1917            && (language[0] != settings.language[0]
1918                || language[1] != settings.language[1])) {
1919            return false;
1920        }
1921        if (country[0] != 0
1922            && (country[0] != settings.country[0]
1923                || country[1] != settings.country[1])) {
1924            return false;
1925        }
1926    }
1927    if (screenConfig != 0) {
1928        const int layoutDir = screenLayout&MASK_LAYOUTDIR;
1929        const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
1930        if (layoutDir != 0 && layoutDir != setLayoutDir) {
1931            return false;
1932        }
1933
1934        const int screenSize = screenLayout&MASK_SCREENSIZE;
1935        const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
1936        // Any screen sizes for larger screens than the setting do not
1937        // match.
1938        if (screenSize != 0 && screenSize > setScreenSize) {
1939            return false;
1940        }
1941
1942        const int screenLong = screenLayout&MASK_SCREENLONG;
1943        const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
1944        if (screenLong != 0 && screenLong != setScreenLong) {
1945            return false;
1946        }
1947
1948        const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
1949        const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
1950        if (uiModeType != 0 && uiModeType != setUiModeType) {
1951            return false;
1952        }
1953
1954        const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
1955        const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
1956        if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
1957            return false;
1958        }
1959
1960        if (smallestScreenWidthDp != 0
1961                && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
1962            return false;
1963        }
1964    }
1965    if (screenSizeDp != 0) {
1966        if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
1967            //ALOGI("Filtering out width %d in requested %d", screenWidthDp, settings.screenWidthDp);
1968            return false;
1969        }
1970        if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
1971            //ALOGI("Filtering out height %d in requested %d", screenHeightDp, settings.screenHeightDp);
1972            return false;
1973        }
1974    }
1975    if (screenType != 0) {
1976        if (orientation != 0 && orientation != settings.orientation) {
1977            return false;
1978        }
1979        // density always matches - we can scale it.  See isBetterThan
1980        if (touchscreen != 0 && touchscreen != settings.touchscreen) {
1981            return false;
1982        }
1983    }
1984    if (input != 0) {
1985        const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
1986        const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
1987        if (keysHidden != 0 && keysHidden != setKeysHidden) {
1988            // For compatibility, we count a request for KEYSHIDDEN_NO as also
1989            // matching the more recent KEYSHIDDEN_SOFT.  Basically
1990            // KEYSHIDDEN_NO means there is some kind of keyboard available.
1991            //ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
1992            if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
1993                //ALOGI("No match!");
1994                return false;
1995            }
1996        }
1997        const int navHidden = inputFlags&MASK_NAVHIDDEN;
1998        const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
1999        if (navHidden != 0 && navHidden != setNavHidden) {
2000            return false;
2001        }
2002        if (keyboard != 0 && keyboard != settings.keyboard) {
2003            return false;
2004        }
2005        if (navigation != 0 && navigation != settings.navigation) {
2006            return false;
2007        }
2008    }
2009    if (screenSize != 0) {
2010        if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2011            return false;
2012        }
2013        if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2014            return false;
2015        }
2016    }
2017    if (version != 0) {
2018        if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2019            return false;
2020        }
2021        if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2022            return false;
2023        }
2024    }
2025    return true;
2026}
2027
2028void ResTable_config::getLocale(char str[6]) const {
2029    memset(str, 0, 6);
2030    if (language[0]) {
2031        str[0] = language[0];
2032        str[1] = language[1];
2033        if (country[0]) {
2034            str[2] = '_';
2035            str[3] = country[0];
2036            str[4] = country[1];
2037        }
2038    }
2039}
2040
2041String8 ResTable_config::toString() const {
2042    String8 res;
2043
2044    if (mcc != 0) {
2045        if (res.size() > 0) res.append("-");
2046        res.appendFormat("%dmcc", dtohs(mcc));
2047    }
2048    if (mnc != 0) {
2049        if (res.size() > 0) res.append("-");
2050        res.appendFormat("%dmnc", dtohs(mnc));
2051    }
2052    if (language[0] != 0) {
2053        if (res.size() > 0) res.append("-");
2054        res.append(language, 2);
2055    }
2056    if (country[0] != 0) {
2057        if (res.size() > 0) res.append("-");
2058        res.append(country, 2);
2059    }
2060    if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2061        if (res.size() > 0) res.append("-");
2062        switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2063            case ResTable_config::LAYOUTDIR_LTR:
2064                res.append("ldltr");
2065                break;
2066            case ResTable_config::LAYOUTDIR_RTL:
2067                res.append("ldrtl");
2068                break;
2069            default:
2070                res.appendFormat("layoutDir=%d",
2071                        dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2072                break;
2073        }
2074    }
2075    if (smallestScreenWidthDp != 0) {
2076        if (res.size() > 0) res.append("-");
2077        res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2078    }
2079    if (screenWidthDp != 0) {
2080        if (res.size() > 0) res.append("-");
2081        res.appendFormat("w%ddp", dtohs(screenWidthDp));
2082    }
2083    if (screenHeightDp != 0) {
2084        if (res.size() > 0) res.append("-");
2085        res.appendFormat("h%ddp", dtohs(screenHeightDp));
2086    }
2087    if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2088        if (res.size() > 0) res.append("-");
2089        switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2090            case ResTable_config::SCREENSIZE_SMALL:
2091                res.append("small");
2092                break;
2093            case ResTable_config::SCREENSIZE_NORMAL:
2094                res.append("normal");
2095                break;
2096            case ResTable_config::SCREENSIZE_LARGE:
2097                res.append("large");
2098                break;
2099            case ResTable_config::SCREENSIZE_XLARGE:
2100                res.append("xlarge");
2101                break;
2102            default:
2103                res.appendFormat("screenLayoutSize=%d",
2104                        dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2105                break;
2106        }
2107    }
2108    if ((screenLayout&MASK_SCREENLONG) != 0) {
2109        if (res.size() > 0) res.append("-");
2110        switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2111            case ResTable_config::SCREENLONG_NO:
2112                res.append("notlong");
2113                break;
2114            case ResTable_config::SCREENLONG_YES:
2115                res.append("long");
2116                break;
2117            default:
2118                res.appendFormat("screenLayoutLong=%d",
2119                        dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2120                break;
2121        }
2122    }
2123    if (orientation != ORIENTATION_ANY) {
2124        if (res.size() > 0) res.append("-");
2125        switch (orientation) {
2126            case ResTable_config::ORIENTATION_PORT:
2127                res.append("port");
2128                break;
2129            case ResTable_config::ORIENTATION_LAND:
2130                res.append("land");
2131                break;
2132            case ResTable_config::ORIENTATION_SQUARE:
2133                res.append("square");
2134                break;
2135            default:
2136                res.appendFormat("orientation=%d", dtohs(orientation));
2137                break;
2138        }
2139    }
2140    if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2141        if (res.size() > 0) res.append("-");
2142        switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2143            case ResTable_config::UI_MODE_TYPE_DESK:
2144                res.append("desk");
2145                break;
2146            case ResTable_config::UI_MODE_TYPE_CAR:
2147                res.append("car");
2148                break;
2149            case ResTable_config::UI_MODE_TYPE_TELEVISION:
2150                res.append("television");
2151                break;
2152            case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2153                res.append("appliance");
2154                break;
2155            default:
2156                res.appendFormat("uiModeType=%d",
2157                        dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2158                break;
2159        }
2160    }
2161    if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2162        if (res.size() > 0) res.append("-");
2163        switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2164            case ResTable_config::UI_MODE_NIGHT_NO:
2165                res.append("notnight");
2166                break;
2167            case ResTable_config::UI_MODE_NIGHT_YES:
2168                res.append("night");
2169                break;
2170            default:
2171                res.appendFormat("uiModeNight=%d",
2172                        dtohs(uiMode&MASK_UI_MODE_NIGHT));
2173                break;
2174        }
2175    }
2176    if (density != DENSITY_DEFAULT) {
2177        if (res.size() > 0) res.append("-");
2178        switch (density) {
2179            case ResTable_config::DENSITY_LOW:
2180                res.append("ldpi");
2181                break;
2182            case ResTable_config::DENSITY_MEDIUM:
2183                res.append("mdpi");
2184                break;
2185            case ResTable_config::DENSITY_TV:
2186                res.append("tvdpi");
2187                break;
2188            case ResTable_config::DENSITY_HIGH:
2189                res.append("hdpi");
2190                break;
2191            case ResTable_config::DENSITY_XHIGH:
2192                res.append("xhdpi");
2193                break;
2194            case ResTable_config::DENSITY_XXHIGH:
2195                res.append("xxhdpi");
2196                break;
2197            case ResTable_config::DENSITY_NONE:
2198                res.append("nodpi");
2199                break;
2200            default:
2201                res.appendFormat("%ddpi", dtohs(density));
2202                break;
2203        }
2204    }
2205    if (touchscreen != TOUCHSCREEN_ANY) {
2206        if (res.size() > 0) res.append("-");
2207        switch (touchscreen) {
2208            case ResTable_config::TOUCHSCREEN_NOTOUCH:
2209                res.append("notouch");
2210                break;
2211            case ResTable_config::TOUCHSCREEN_FINGER:
2212                res.append("finger");
2213                break;
2214            case ResTable_config::TOUCHSCREEN_STYLUS:
2215                res.append("stylus");
2216                break;
2217            default:
2218                res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2219                break;
2220        }
2221    }
2222    if (keyboard != KEYBOARD_ANY) {
2223        if (res.size() > 0) res.append("-");
2224        switch (keyboard) {
2225            case ResTable_config::KEYBOARD_NOKEYS:
2226                res.append("nokeys");
2227                break;
2228            case ResTable_config::KEYBOARD_QWERTY:
2229                res.append("qwerty");
2230                break;
2231            case ResTable_config::KEYBOARD_12KEY:
2232                res.append("12key");
2233                break;
2234            default:
2235                res.appendFormat("keyboard=%d", dtohs(keyboard));
2236                break;
2237        }
2238    }
2239    if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2240        if (res.size() > 0) res.append("-");
2241        switch (inputFlags&MASK_KEYSHIDDEN) {
2242            case ResTable_config::KEYSHIDDEN_NO:
2243                res.append("keysexposed");
2244                break;
2245            case ResTable_config::KEYSHIDDEN_YES:
2246                res.append("keyshidden");
2247                break;
2248            case ResTable_config::KEYSHIDDEN_SOFT:
2249                res.append("keyssoft");
2250                break;
2251        }
2252    }
2253    if (navigation != NAVIGATION_ANY) {
2254        if (res.size() > 0) res.append("-");
2255        switch (navigation) {
2256            case ResTable_config::NAVIGATION_NONAV:
2257                res.append("nonav");
2258                break;
2259            case ResTable_config::NAVIGATION_DPAD:
2260                res.append("dpad");
2261                break;
2262            case ResTable_config::NAVIGATION_TRACKBALL:
2263                res.append("trackball");
2264                break;
2265            case ResTable_config::NAVIGATION_WHEEL:
2266                res.append("wheel");
2267                break;
2268            default:
2269                res.appendFormat("navigation=%d", dtohs(navigation));
2270                break;
2271        }
2272    }
2273    if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2274        if (res.size() > 0) res.append("-");
2275        switch (inputFlags&MASK_NAVHIDDEN) {
2276            case ResTable_config::NAVHIDDEN_NO:
2277                res.append("navsexposed");
2278                break;
2279            case ResTable_config::NAVHIDDEN_YES:
2280                res.append("navhidden");
2281                break;
2282            default:
2283                res.appendFormat("inputFlagsNavHidden=%d",
2284                        dtohs(inputFlags&MASK_NAVHIDDEN));
2285                break;
2286        }
2287    }
2288    if (screenSize != 0) {
2289        if (res.size() > 0) res.append("-");
2290        res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2291    }
2292    if (version != 0) {
2293        if (res.size() > 0) res.append("-");
2294        res.appendFormat("v%d", dtohs(sdkVersion));
2295        if (minorVersion != 0) {
2296            res.appendFormat(".%d", dtohs(minorVersion));
2297        }
2298    }
2299
2300    return res;
2301}
2302
2303// --------------------------------------------------------------------
2304// --------------------------------------------------------------------
2305// --------------------------------------------------------------------
2306
2307struct ResTable::Header
2308{
2309    Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
2310        resourceIDMap(NULL), resourceIDMapSize(0) { }
2311
2312    ~Header()
2313    {
2314        free(resourceIDMap);
2315    }
2316
2317    ResTable* const                 owner;
2318    void*                           ownedData;
2319    const ResTable_header*          header;
2320    size_t                          size;
2321    const uint8_t*                  dataEnd;
2322    size_t                          index;
2323    void*                           cookie;
2324
2325    ResStringPool                   values;
2326    uint32_t*                       resourceIDMap;
2327    size_t                          resourceIDMapSize;
2328};
2329
2330struct ResTable::Type
2331{
2332    Type(const Header* _header, const Package* _package, size_t count)
2333        : header(_header), package(_package), entryCount(count),
2334          typeSpec(NULL), typeSpecFlags(NULL) { }
2335    const Header* const             header;
2336    const Package* const            package;
2337    const size_t                    entryCount;
2338    const ResTable_typeSpec*        typeSpec;
2339    const uint32_t*                 typeSpecFlags;
2340    Vector<const ResTable_type*>    configs;
2341};
2342
2343struct ResTable::Package
2344{
2345    Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
2346        : owner(_owner), header(_header), package(_package) { }
2347    ~Package()
2348    {
2349        size_t i = types.size();
2350        while (i > 0) {
2351            i--;
2352            delete types[i];
2353        }
2354    }
2355
2356    ResTable* const                 owner;
2357    const Header* const             header;
2358    const ResTable_package* const   package;
2359    Vector<Type*>                   types;
2360
2361    ResStringPool                   typeStrings;
2362    ResStringPool                   keyStrings;
2363
2364    const Type* getType(size_t idx) const {
2365        return idx < types.size() ? types[idx] : NULL;
2366    }
2367};
2368
2369// A group of objects describing a particular resource package.
2370// The first in 'package' is always the root object (from the resource
2371// table that defined the package); the ones after are skins on top of it.
2372struct ResTable::PackageGroup
2373{
2374    PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
2375        : owner(_owner), name(_name), id(_id), typeCount(0), bags(NULL) { }
2376    ~PackageGroup() {
2377        clearBagCache();
2378        const size_t N = packages.size();
2379        for (size_t i=0; i<N; i++) {
2380            Package* pkg = packages[i];
2381            if (pkg->owner == owner) {
2382                delete pkg;
2383            }
2384        }
2385    }
2386
2387    void clearBagCache() {
2388        if (bags) {
2389            TABLE_NOISY(printf("bags=%p\n", bags));
2390            Package* pkg = packages[0];
2391            TABLE_NOISY(printf("typeCount=%x\n", typeCount));
2392            for (size_t i=0; i<typeCount; i++) {
2393                TABLE_NOISY(printf("type=%d\n", i));
2394                const Type* type = pkg->getType(i);
2395                if (type != NULL) {
2396                    bag_set** typeBags = bags[i];
2397                    TABLE_NOISY(printf("typeBags=%p\n", typeBags));
2398                    if (typeBags) {
2399                        TABLE_NOISY(printf("type->entryCount=%x\n", type->entryCount));
2400                        const size_t N = type->entryCount;
2401                        for (size_t j=0; j<N; j++) {
2402                            if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
2403                                free(typeBags[j]);
2404                        }
2405                        free(typeBags);
2406                    }
2407                }
2408            }
2409            free(bags);
2410            bags = NULL;
2411        }
2412    }
2413
2414    ResTable* const                 owner;
2415    String16 const                  name;
2416    uint32_t const                  id;
2417    Vector<Package*>                packages;
2418
2419    // This is for finding typeStrings and other common package stuff.
2420    Package*                        basePackage;
2421
2422    // For quick access.
2423    size_t                          typeCount;
2424
2425    // Computed attribute bags, first indexed by the type and second
2426    // by the entry in that type.
2427    bag_set***                      bags;
2428};
2429
2430struct ResTable::bag_set
2431{
2432    size_t numAttrs;    // number in array
2433    size_t availAttrs;  // total space in array
2434    uint32_t typeSpecFlags;
2435    // Followed by 'numAttr' bag_entry structures.
2436};
2437
2438ResTable::Theme::Theme(const ResTable& table)
2439    : mTable(table)
2440{
2441    memset(mPackages, 0, sizeof(mPackages));
2442}
2443
2444ResTable::Theme::~Theme()
2445{
2446    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2447        package_info* pi = mPackages[i];
2448        if (pi != NULL) {
2449            free_package(pi);
2450        }
2451    }
2452}
2453
2454void ResTable::Theme::free_package(package_info* pi)
2455{
2456    for (size_t j=0; j<pi->numTypes; j++) {
2457        theme_entry* te = pi->types[j].entries;
2458        if (te != NULL) {
2459            free(te);
2460        }
2461    }
2462    free(pi);
2463}
2464
2465ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
2466{
2467    package_info* newpi = (package_info*)malloc(
2468        sizeof(package_info) + (pi->numTypes*sizeof(type_info)));
2469    newpi->numTypes = pi->numTypes;
2470    for (size_t j=0; j<newpi->numTypes; j++) {
2471        size_t cnt = pi->types[j].numEntries;
2472        newpi->types[j].numEntries = cnt;
2473        theme_entry* te = pi->types[j].entries;
2474        if (te != NULL) {
2475            theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
2476            newpi->types[j].entries = newte;
2477            memcpy(newte, te, cnt*sizeof(theme_entry));
2478        } else {
2479            newpi->types[j].entries = NULL;
2480        }
2481    }
2482    return newpi;
2483}
2484
2485status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
2486{
2487    const bag_entry* bag;
2488    uint32_t bagTypeSpecFlags = 0;
2489    mTable.lock();
2490    const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
2491    TABLE_NOISY(ALOGV("Applying style 0x%08x to theme %p, count=%d", resID, this, N));
2492    if (N < 0) {
2493        mTable.unlock();
2494        return N;
2495    }
2496
2497    uint32_t curPackage = 0xffffffff;
2498    ssize_t curPackageIndex = 0;
2499    package_info* curPI = NULL;
2500    uint32_t curType = 0xffffffff;
2501    size_t numEntries = 0;
2502    theme_entry* curEntries = NULL;
2503
2504    const bag_entry* end = bag + N;
2505    while (bag < end) {
2506        const uint32_t attrRes = bag->map.name.ident;
2507        const uint32_t p = Res_GETPACKAGE(attrRes);
2508        const uint32_t t = Res_GETTYPE(attrRes);
2509        const uint32_t e = Res_GETENTRY(attrRes);
2510
2511        if (curPackage != p) {
2512            const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
2513            if (pidx < 0) {
2514                ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
2515                bag++;
2516                continue;
2517            }
2518            curPackage = p;
2519            curPackageIndex = pidx;
2520            curPI = mPackages[pidx];
2521            if (curPI == NULL) {
2522                PackageGroup* const grp = mTable.mPackageGroups[pidx];
2523                int cnt = grp->typeCount;
2524                curPI = (package_info*)malloc(
2525                    sizeof(package_info) + (cnt*sizeof(type_info)));
2526                curPI->numTypes = cnt;
2527                memset(curPI->types, 0, cnt*sizeof(type_info));
2528                mPackages[pidx] = curPI;
2529            }
2530            curType = 0xffffffff;
2531        }
2532        if (curType != t) {
2533            if (t >= curPI->numTypes) {
2534                ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
2535                bag++;
2536                continue;
2537            }
2538            curType = t;
2539            curEntries = curPI->types[t].entries;
2540            if (curEntries == NULL) {
2541                PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
2542                const Type* type = grp->packages[0]->getType(t);
2543                int cnt = type != NULL ? type->entryCount : 0;
2544                curEntries = (theme_entry*)malloc(cnt*sizeof(theme_entry));
2545                memset(curEntries, Res_value::TYPE_NULL, cnt*sizeof(theme_entry));
2546                curPI->types[t].numEntries = cnt;
2547                curPI->types[t].entries = curEntries;
2548            }
2549            numEntries = curPI->types[t].numEntries;
2550        }
2551        if (e >= numEntries) {
2552            ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
2553            bag++;
2554            continue;
2555        }
2556        theme_entry* curEntry = curEntries + e;
2557        TABLE_NOISY(ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
2558                   attrRes, bag->map.value.dataType, bag->map.value.data,
2559             curEntry->value.dataType));
2560        if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
2561            curEntry->stringBlock = bag->stringBlock;
2562            curEntry->typeSpecFlags |= bagTypeSpecFlags;
2563            curEntry->value = bag->map.value;
2564        }
2565
2566        bag++;
2567    }
2568
2569    mTable.unlock();
2570
2571    //ALOGI("Applying style 0x%08x (force=%d)  theme %p...\n", resID, force, this);
2572    //dumpToLog();
2573
2574    return NO_ERROR;
2575}
2576
2577status_t ResTable::Theme::setTo(const Theme& other)
2578{
2579    //ALOGI("Setting theme %p from theme %p...\n", this, &other);
2580    //dumpToLog();
2581    //other.dumpToLog();
2582
2583    if (&mTable == &other.mTable) {
2584        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2585            if (mPackages[i] != NULL) {
2586                free_package(mPackages[i]);
2587            }
2588            if (other.mPackages[i] != NULL) {
2589                mPackages[i] = copy_package(other.mPackages[i]);
2590            } else {
2591                mPackages[i] = NULL;
2592            }
2593        }
2594    } else {
2595        // @todo: need to really implement this, not just copy
2596        // the system package (which is still wrong because it isn't
2597        // fixing up resource references).
2598        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2599            if (mPackages[i] != NULL) {
2600                free_package(mPackages[i]);
2601            }
2602            if (i == 0 && other.mPackages[i] != NULL) {
2603                mPackages[i] = copy_package(other.mPackages[i]);
2604            } else {
2605                mPackages[i] = NULL;
2606            }
2607        }
2608    }
2609
2610    //ALOGI("Final theme:");
2611    //dumpToLog();
2612
2613    return NO_ERROR;
2614}
2615
2616ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
2617        uint32_t* outTypeSpecFlags) const
2618{
2619    int cnt = 20;
2620
2621    if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
2622
2623    do {
2624        const ssize_t p = mTable.getResourcePackageIndex(resID);
2625        const uint32_t t = Res_GETTYPE(resID);
2626        const uint32_t e = Res_GETENTRY(resID);
2627
2628        TABLE_THEME(ALOGI("Looking up attr 0x%08x in theme %p", resID, this));
2629
2630        if (p >= 0) {
2631            const package_info* const pi = mPackages[p];
2632            TABLE_THEME(ALOGI("Found package: %p", pi));
2633            if (pi != NULL) {
2634                TABLE_THEME(ALOGI("Desired type index is %ld in avail %d", t, pi->numTypes));
2635                if (t < pi->numTypes) {
2636                    const type_info& ti = pi->types[t];
2637                    TABLE_THEME(ALOGI("Desired entry index is %ld in avail %d", e, ti.numEntries));
2638                    if (e < ti.numEntries) {
2639                        const theme_entry& te = ti.entries[e];
2640                        if (outTypeSpecFlags != NULL) {
2641                            *outTypeSpecFlags |= te.typeSpecFlags;
2642                        }
2643                        TABLE_THEME(ALOGI("Theme value: type=0x%x, data=0x%08x",
2644                                te.value.dataType, te.value.data));
2645                        const uint8_t type = te.value.dataType;
2646                        if (type == Res_value::TYPE_ATTRIBUTE) {
2647                            if (cnt > 0) {
2648                                cnt--;
2649                                resID = te.value.data;
2650                                continue;
2651                            }
2652                            ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
2653                            return BAD_INDEX;
2654                        } else if (type != Res_value::TYPE_NULL) {
2655                            *outValue = te.value;
2656                            return te.stringBlock;
2657                        }
2658                        return BAD_INDEX;
2659                    }
2660                }
2661            }
2662        }
2663        break;
2664
2665    } while (true);
2666
2667    return BAD_INDEX;
2668}
2669
2670ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
2671        ssize_t blockIndex, uint32_t* outLastRef,
2672        uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
2673{
2674    //printf("Resolving type=0x%x\n", inOutValue->dataType);
2675    if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
2676        uint32_t newTypeSpecFlags;
2677        blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
2678        TABLE_THEME(ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=%p\n",
2679             (int)blockIndex, (int)inOutValue->dataType, (void*)inOutValue->data));
2680        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
2681        //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
2682        if (blockIndex < 0) {
2683            return blockIndex;
2684        }
2685    }
2686    return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
2687            inoutTypeSpecFlags, inoutConfig);
2688}
2689
2690void ResTable::Theme::dumpToLog() const
2691{
2692    ALOGI("Theme %p:\n", this);
2693    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2694        package_info* pi = mPackages[i];
2695        if (pi == NULL) continue;
2696
2697        ALOGI("  Package #0x%02x:\n", (int)(i+1));
2698        for (size_t j=0; j<pi->numTypes; j++) {
2699            type_info& ti = pi->types[j];
2700            if (ti.numEntries == 0) continue;
2701
2702            ALOGI("    Type #0x%02x:\n", (int)(j+1));
2703            for (size_t k=0; k<ti.numEntries; k++) {
2704                theme_entry& te = ti.entries[k];
2705                if (te.value.dataType == Res_value::TYPE_NULL) continue;
2706                ALOGI("      0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
2707                     (int)Res_MAKEID(i, j, k),
2708                     te.value.dataType, (int)te.value.data, (int)te.stringBlock);
2709            }
2710        }
2711    }
2712}
2713
2714ResTable::ResTable()
2715    : mError(NO_INIT)
2716{
2717    memset(&mParams, 0, sizeof(mParams));
2718    memset(mPackageMap, 0, sizeof(mPackageMap));
2719    //ALOGI("Creating ResTable %p\n", this);
2720}
2721
2722ResTable::ResTable(const void* data, size_t size, void* cookie, bool copyData)
2723    : mError(NO_INIT)
2724{
2725    memset(&mParams, 0, sizeof(mParams));
2726    memset(mPackageMap, 0, sizeof(mPackageMap));
2727    add(data, size, cookie, copyData);
2728    LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
2729    //ALOGI("Creating ResTable %p\n", this);
2730}
2731
2732ResTable::~ResTable()
2733{
2734    //ALOGI("Destroying ResTable in %p\n", this);
2735    uninit();
2736}
2737
2738inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
2739{
2740    return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
2741}
2742
2743status_t ResTable::add(const void* data, size_t size, void* cookie, bool copyData,
2744                       const void* idmap)
2745{
2746    return add(data, size, cookie, NULL, copyData, reinterpret_cast<const Asset*>(idmap));
2747}
2748
2749status_t ResTable::add(Asset* asset, void* cookie, bool copyData, const void* idmap)
2750{
2751    const void* data = asset->getBuffer(true);
2752    if (data == NULL) {
2753        ALOGW("Unable to get buffer of resource asset file");
2754        return UNKNOWN_ERROR;
2755    }
2756    size_t size = (size_t)asset->getLength();
2757    return add(data, size, cookie, asset, copyData, reinterpret_cast<const Asset*>(idmap));
2758}
2759
2760status_t ResTable::add(ResTable* src)
2761{
2762    mError = src->mError;
2763
2764    for (size_t i=0; i<src->mHeaders.size(); i++) {
2765        mHeaders.add(src->mHeaders[i]);
2766    }
2767
2768    for (size_t i=0; i<src->mPackageGroups.size(); i++) {
2769        PackageGroup* srcPg = src->mPackageGroups[i];
2770        PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
2771        for (size_t j=0; j<srcPg->packages.size(); j++) {
2772            pg->packages.add(srcPg->packages[j]);
2773        }
2774        pg->basePackage = srcPg->basePackage;
2775        pg->typeCount = srcPg->typeCount;
2776        mPackageGroups.add(pg);
2777    }
2778
2779    memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
2780
2781    return mError;
2782}
2783
2784status_t ResTable::add(const void* data, size_t size, void* cookie,
2785                       Asset* asset, bool copyData, const Asset* idmap)
2786{
2787    if (!data) return NO_ERROR;
2788    Header* header = new Header(this);
2789    header->index = mHeaders.size();
2790    header->cookie = cookie;
2791    if (idmap != NULL) {
2792        const size_t idmap_size = idmap->getLength();
2793        const void* idmap_data = const_cast<Asset*>(idmap)->getBuffer(true);
2794        header->resourceIDMap = (uint32_t*)malloc(idmap_size);
2795        if (header->resourceIDMap == NULL) {
2796            delete header;
2797            return (mError = NO_MEMORY);
2798        }
2799        memcpy((void*)header->resourceIDMap, idmap_data, idmap_size);
2800        header->resourceIDMapSize = idmap_size;
2801    }
2802    mHeaders.add(header);
2803
2804    const bool notDeviceEndian = htods(0xf0) != 0xf0;
2805
2806    LOAD_TABLE_NOISY(
2807        ALOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%p, asset=%p, copy=%d "
2808             "idmap=%p\n", data, size, cookie, asset, copyData, idmap));
2809
2810    if (copyData || notDeviceEndian) {
2811        header->ownedData = malloc(size);
2812        if (header->ownedData == NULL) {
2813            return (mError=NO_MEMORY);
2814        }
2815        memcpy(header->ownedData, data, size);
2816        data = header->ownedData;
2817    }
2818
2819    header->header = (const ResTable_header*)data;
2820    header->size = dtohl(header->header->header.size);
2821    //ALOGI("Got size 0x%x, again size 0x%x, raw size 0x%x\n", header->size,
2822    //     dtohl(header->header->header.size), header->header->header.size);
2823    LOAD_TABLE_NOISY(ALOGV("Loading ResTable @%p:\n", header->header));
2824    LOAD_TABLE_NOISY(printHexData(2, header->header, header->size < 256 ? header->size : 256,
2825                                  16, 16, 0, false, printToLogFunc));
2826    if (dtohs(header->header->header.headerSize) > header->size
2827            || header->size > size) {
2828        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
2829             (int)dtohs(header->header->header.headerSize),
2830             (int)header->size, (int)size);
2831        return (mError=BAD_TYPE);
2832    }
2833    if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
2834        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
2835             (int)dtohs(header->header->header.headerSize),
2836             (int)header->size);
2837        return (mError=BAD_TYPE);
2838    }
2839    header->dataEnd = ((const uint8_t*)header->header) + header->size;
2840
2841    // Iterate through all chunks.
2842    size_t curPackage = 0;
2843
2844    const ResChunk_header* chunk =
2845        (const ResChunk_header*)(((const uint8_t*)header->header)
2846                                 + dtohs(header->header->header.headerSize));
2847    while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
2848           ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
2849        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
2850        if (err != NO_ERROR) {
2851            return (mError=err);
2852        }
2853        TABLE_NOISY(ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
2854                     dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
2855                     (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
2856        const size_t csize = dtohl(chunk->size);
2857        const uint16_t ctype = dtohs(chunk->type);
2858        if (ctype == RES_STRING_POOL_TYPE) {
2859            if (header->values.getError() != NO_ERROR) {
2860                // Only use the first string chunk; ignore any others that
2861                // may appear.
2862                status_t err = header->values.setTo(chunk, csize);
2863                if (err != NO_ERROR) {
2864                    return (mError=err);
2865                }
2866            } else {
2867                ALOGW("Multiple string chunks found in resource table.");
2868            }
2869        } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
2870            if (curPackage >= dtohl(header->header->packageCount)) {
2871                ALOGW("More package chunks were found than the %d declared in the header.",
2872                     dtohl(header->header->packageCount));
2873                return (mError=BAD_TYPE);
2874            }
2875            uint32_t idmap_id = 0;
2876            if (idmap != NULL) {
2877                uint32_t tmp;
2878                if (getIdmapPackageId(header->resourceIDMap,
2879                                      header->resourceIDMapSize,
2880                                      &tmp) == NO_ERROR) {
2881                    idmap_id = tmp;
2882                }
2883            }
2884            if (parsePackage((ResTable_package*)chunk, header, idmap_id) != NO_ERROR) {
2885                return mError;
2886            }
2887            curPackage++;
2888        } else {
2889            ALOGW("Unknown chunk type %p in table at %p.\n",
2890                 (void*)(int)(ctype),
2891                 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
2892        }
2893        chunk = (const ResChunk_header*)
2894            (((const uint8_t*)chunk) + csize);
2895    }
2896
2897    if (curPackage < dtohl(header->header->packageCount)) {
2898        ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
2899             (int)curPackage, dtohl(header->header->packageCount));
2900        return (mError=BAD_TYPE);
2901    }
2902    mError = header->values.getError();
2903    if (mError != NO_ERROR) {
2904        ALOGW("No string values found in resource table!");
2905    }
2906
2907    TABLE_NOISY(ALOGV("Returning from add with mError=%d\n", mError));
2908    return mError;
2909}
2910
2911status_t ResTable::getError() const
2912{
2913    return mError;
2914}
2915
2916void ResTable::uninit()
2917{
2918    mError = NO_INIT;
2919    size_t N = mPackageGroups.size();
2920    for (size_t i=0; i<N; i++) {
2921        PackageGroup* g = mPackageGroups[i];
2922        delete g;
2923    }
2924    N = mHeaders.size();
2925    for (size_t i=0; i<N; i++) {
2926        Header* header = mHeaders[i];
2927        if (header->owner == this) {
2928            if (header->ownedData) {
2929                free(header->ownedData);
2930            }
2931            delete header;
2932        }
2933    }
2934
2935    mPackageGroups.clear();
2936    mHeaders.clear();
2937}
2938
2939bool ResTable::getResourceName(uint32_t resID, resource_name* outName) const
2940{
2941    if (mError != NO_ERROR) {
2942        return false;
2943    }
2944
2945    const ssize_t p = getResourcePackageIndex(resID);
2946    const int t = Res_GETTYPE(resID);
2947    const int e = Res_GETENTRY(resID);
2948
2949    if (p < 0) {
2950        if (Res_GETPACKAGE(resID)+1 == 0) {
2951            ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
2952        } else {
2953            ALOGW("No known package when getting name for resource number 0x%08x", resID);
2954        }
2955        return false;
2956    }
2957    if (t < 0) {
2958        ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
2959        return false;
2960    }
2961
2962    const PackageGroup* const grp = mPackageGroups[p];
2963    if (grp == NULL) {
2964        ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
2965        return false;
2966    }
2967    if (grp->packages.size() > 0) {
2968        const Package* const package = grp->packages[0];
2969
2970        const ResTable_type* type;
2971        const ResTable_entry* entry;
2972        ssize_t offset = getEntry(package, t, e, NULL, &type, &entry, NULL);
2973        if (offset <= 0) {
2974            return false;
2975        }
2976
2977        outName->package = grp->name.string();
2978        outName->packageLen = grp->name.size();
2979        outName->type = grp->basePackage->typeStrings.stringAt(t, &outName->typeLen);
2980        outName->name = grp->basePackage->keyStrings.stringAt(
2981            dtohl(entry->key.index), &outName->nameLen);
2982
2983        // If we have a bad index for some reason, we should abort.
2984        if (outName->type == NULL || outName->name == NULL) {
2985            return false;
2986        }
2987
2988        return true;
2989    }
2990
2991    return false;
2992}
2993
2994ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
2995        uint32_t* outSpecFlags, ResTable_config* outConfig) const
2996{
2997    if (mError != NO_ERROR) {
2998        return mError;
2999    }
3000
3001    const ssize_t p = getResourcePackageIndex(resID);
3002    const int t = Res_GETTYPE(resID);
3003    const int e = Res_GETENTRY(resID);
3004
3005    if (p < 0) {
3006        if (Res_GETPACKAGE(resID)+1 == 0) {
3007            ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
3008        } else {
3009            ALOGW("No known package when getting value for resource number 0x%08x", resID);
3010        }
3011        return BAD_INDEX;
3012    }
3013    if (t < 0) {
3014        ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
3015        return BAD_INDEX;
3016    }
3017
3018    const Res_value* bestValue = NULL;
3019    const Package* bestPackage = NULL;
3020    ResTable_config bestItem;
3021    memset(&bestItem, 0, sizeof(bestItem)); // make the compiler shut up
3022
3023    if (outSpecFlags != NULL) *outSpecFlags = 0;
3024
3025    // Look through all resource packages, starting with the most
3026    // recently added.
3027    const PackageGroup* const grp = mPackageGroups[p];
3028    if (grp == NULL) {
3029        ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
3030        return BAD_INDEX;
3031    }
3032
3033    // Allow overriding density
3034    const ResTable_config* desiredConfig = &mParams;
3035    ResTable_config* overrideConfig = NULL;
3036    if (density > 0) {
3037        overrideConfig = (ResTable_config*) malloc(sizeof(ResTable_config));
3038        if (overrideConfig == NULL) {
3039            ALOGE("Couldn't malloc ResTable_config for overrides: %s", strerror(errno));
3040            return BAD_INDEX;
3041        }
3042        memcpy(overrideConfig, &mParams, sizeof(ResTable_config));
3043        overrideConfig->density = density;
3044        desiredConfig = overrideConfig;
3045    }
3046
3047    ssize_t rc = BAD_VALUE;
3048    size_t ip = grp->packages.size();
3049    while (ip > 0) {
3050        ip--;
3051        int T = t;
3052        int E = e;
3053
3054        const Package* const package = grp->packages[ip];
3055        if (package->header->resourceIDMap) {
3056            uint32_t overlayResID = 0x0;
3057            status_t retval = idmapLookup(package->header->resourceIDMap,
3058                                          package->header->resourceIDMapSize,
3059                                          resID, &overlayResID);
3060            if (retval == NO_ERROR && overlayResID != 0x0) {
3061                // for this loop iteration, this is the type and entry we really want
3062                ALOGV("resource map 0x%08x -> 0x%08x\n", resID, overlayResID);
3063                T = Res_GETTYPE(overlayResID);
3064                E = Res_GETENTRY(overlayResID);
3065            } else {
3066                // resource not present in overlay package, continue with the next package
3067                continue;
3068            }
3069        }
3070
3071        const ResTable_type* type;
3072        const ResTable_entry* entry;
3073        const Type* typeClass;
3074        ssize_t offset = getEntry(package, T, E, desiredConfig, &type, &entry, &typeClass);
3075        if (offset <= 0) {
3076            // No {entry, appropriate config} pair found in package. If this
3077            // package is an overlay package (ip != 0), this simply means the
3078            // overlay package did not specify a default.
3079            // Non-overlay packages are still required to provide a default.
3080            if (offset < 0 && ip == 0) {
3081                ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) in package %zd (error %d)\n",
3082                        resID, T, E, ip, (int)offset);
3083                rc = offset;
3084                goto out;
3085            }
3086            continue;
3087        }
3088
3089        if ((dtohs(entry->flags)&entry->FLAG_COMPLEX) != 0) {
3090            if (!mayBeBag) {
3091                ALOGW("Requesting resource %p failed because it is complex\n",
3092                     (void*)resID);
3093            }
3094            continue;
3095        }
3096
3097        TABLE_NOISY(aout << "Resource type data: "
3098              << HexDump(type, dtohl(type->header.size)) << endl);
3099
3100        if ((size_t)offset > (dtohl(type->header.size)-sizeof(Res_value))) {
3101            ALOGW("ResTable_item at %d is beyond type chunk data %d",
3102                 (int)offset, dtohl(type->header.size));
3103            rc = BAD_TYPE;
3104            goto out;
3105        }
3106
3107        const Res_value* item =
3108            (const Res_value*)(((const uint8_t*)type) + offset);
3109        ResTable_config thisConfig;
3110        thisConfig.copyFromDtoH(type->config);
3111
3112        if (outSpecFlags != NULL) {
3113            if (typeClass->typeSpecFlags != NULL) {
3114                *outSpecFlags |= dtohl(typeClass->typeSpecFlags[E]);
3115            } else {
3116                *outSpecFlags = -1;
3117            }
3118        }
3119
3120        if (bestPackage != NULL &&
3121            (bestItem.isMoreSpecificThan(thisConfig) || bestItem.diff(thisConfig) == 0)) {
3122            // Discard thisConfig not only if bestItem is more specific, but also if the two configs
3123            // are identical (diff == 0), or overlay packages will not take effect.
3124            continue;
3125        }
3126
3127        bestItem = thisConfig;
3128        bestValue = item;
3129        bestPackage = package;
3130    }
3131
3132    TABLE_NOISY(printf("Found result: package %p\n", bestPackage));
3133
3134    if (bestValue) {
3135        outValue->size = dtohs(bestValue->size);
3136        outValue->res0 = bestValue->res0;
3137        outValue->dataType = bestValue->dataType;
3138        outValue->data = dtohl(bestValue->data);
3139        if (outConfig != NULL) {
3140            *outConfig = bestItem;
3141        }
3142        TABLE_NOISY(size_t len;
3143              printf("Found value: pkg=%d, type=%d, str=%s, int=%d\n",
3144                     bestPackage->header->index,
3145                     outValue->dataType,
3146                     outValue->dataType == bestValue->TYPE_STRING
3147                     ? String8(bestPackage->header->values.stringAt(
3148                         outValue->data, &len)).string()
3149                     : "",
3150                     outValue->data));
3151        rc = bestPackage->header->index;
3152        goto out;
3153    }
3154
3155out:
3156    if (overrideConfig != NULL) {
3157        free(overrideConfig);
3158    }
3159
3160    return rc;
3161}
3162
3163ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3164        uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3165        ResTable_config* outConfig) const
3166{
3167    int count=0;
3168    while (blockIndex >= 0 && value->dataType == value->TYPE_REFERENCE
3169           && value->data != 0 && count < 20) {
3170        if (outLastRef) *outLastRef = value->data;
3171        uint32_t lastRef = value->data;
3172        uint32_t newFlags = 0;
3173        const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3174                outConfig);
3175        if (newIndex == BAD_INDEX) {
3176            return BAD_INDEX;
3177        }
3178        TABLE_THEME(ALOGI("Resolving reference %p: newIndex=%d, type=0x%x, data=%p\n",
3179             (void*)lastRef, (int)newIndex, (int)value->dataType, (void*)value->data));
3180        //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3181        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3182        if (newIndex < 0) {
3183            // This can fail if the resource being referenced is a style...
3184            // in this case, just return the reference, and expect the
3185            // caller to deal with.
3186            return blockIndex;
3187        }
3188        blockIndex = newIndex;
3189        count++;
3190    }
3191    return blockIndex;
3192}
3193
3194const char16_t* ResTable::valueToString(
3195    const Res_value* value, size_t stringBlock,
3196    char16_t tmpBuffer[TMP_BUFFER_SIZE], size_t* outLen)
3197{
3198    if (!value) {
3199        return NULL;
3200    }
3201    if (value->dataType == value->TYPE_STRING) {
3202        return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
3203    }
3204    // XXX do int to string conversions.
3205    return NULL;
3206}
3207
3208ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
3209{
3210    mLock.lock();
3211    ssize_t err = getBagLocked(resID, outBag);
3212    if (err < NO_ERROR) {
3213        //printf("*** get failed!  unlocking\n");
3214        mLock.unlock();
3215    }
3216    return err;
3217}
3218
3219void ResTable::unlockBag(const bag_entry* bag) const
3220{
3221    //printf("<<< unlockBag %p\n", this);
3222    mLock.unlock();
3223}
3224
3225void ResTable::lock() const
3226{
3227    mLock.lock();
3228}
3229
3230void ResTable::unlock() const
3231{
3232    mLock.unlock();
3233}
3234
3235ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
3236        uint32_t* outTypeSpecFlags) const
3237{
3238    if (mError != NO_ERROR) {
3239        return mError;
3240    }
3241
3242    const ssize_t p = getResourcePackageIndex(resID);
3243    const int t = Res_GETTYPE(resID);
3244    const int e = Res_GETENTRY(resID);
3245
3246    if (p < 0) {
3247        ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
3248        return BAD_INDEX;
3249    }
3250    if (t < 0) {
3251        ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
3252        return BAD_INDEX;
3253    }
3254
3255    //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
3256    PackageGroup* const grp = mPackageGroups[p];
3257    if (grp == NULL) {
3258        ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
3259        return false;
3260    }
3261
3262    if (t >= (int)grp->typeCount) {
3263        ALOGW("Type identifier 0x%x is larger than type count 0x%x",
3264             t+1, (int)grp->typeCount);
3265        return BAD_INDEX;
3266    }
3267
3268    const Package* const basePackage = grp->packages[0];
3269
3270    const Type* const typeConfigs = basePackage->getType(t);
3271
3272    const size_t NENTRY = typeConfigs->entryCount;
3273    if (e >= (int)NENTRY) {
3274        ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
3275             e, (int)typeConfigs->entryCount);
3276        return BAD_INDEX;
3277    }
3278
3279    // First see if we've already computed this bag...
3280    if (grp->bags) {
3281        bag_set** typeSet = grp->bags[t];
3282        if (typeSet) {
3283            bag_set* set = typeSet[e];
3284            if (set) {
3285                if (set != (bag_set*)0xFFFFFFFF) {
3286                    if (outTypeSpecFlags != NULL) {
3287                        *outTypeSpecFlags = set->typeSpecFlags;
3288                    }
3289                    *outBag = (bag_entry*)(set+1);
3290                    //ALOGI("Found existing bag for: %p\n", (void*)resID);
3291                    return set->numAttrs;
3292                }
3293                ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
3294                     resID);
3295                return BAD_INDEX;
3296            }
3297        }
3298    }
3299
3300    // Bag not found, we need to compute it!
3301    if (!grp->bags) {
3302        grp->bags = (bag_set***)calloc(grp->typeCount, sizeof(bag_set*));
3303        if (!grp->bags) return NO_MEMORY;
3304    }
3305
3306    bag_set** typeSet = grp->bags[t];
3307    if (!typeSet) {
3308        typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
3309        if (!typeSet) return NO_MEMORY;
3310        grp->bags[t] = typeSet;
3311    }
3312
3313    // Mark that we are currently working on this one.
3314    typeSet[e] = (bag_set*)0xFFFFFFFF;
3315
3316    // This is what we are building.
3317    bag_set* set = NULL;
3318
3319    TABLE_NOISY(ALOGI("Building bag: %p\n", (void*)resID));
3320
3321    ResTable_config bestConfig;
3322    memset(&bestConfig, 0, sizeof(bestConfig));
3323
3324    // Now collect all bag attributes from all packages.
3325    size_t ip = grp->packages.size();
3326    while (ip > 0) {
3327        ip--;
3328        int T = t;
3329        int E = e;
3330
3331        const Package* const package = grp->packages[ip];
3332        if (package->header->resourceIDMap) {
3333            uint32_t overlayResID = 0x0;
3334            status_t retval = idmapLookup(package->header->resourceIDMap,
3335                                          package->header->resourceIDMapSize,
3336                                          resID, &overlayResID);
3337            if (retval == NO_ERROR && overlayResID != 0x0) {
3338                // for this loop iteration, this is the type and entry we really want
3339                ALOGV("resource map 0x%08x -> 0x%08x\n", resID, overlayResID);
3340                T = Res_GETTYPE(overlayResID);
3341                E = Res_GETENTRY(overlayResID);
3342            } else {
3343                // resource not present in overlay package, continue with the next package
3344                continue;
3345            }
3346        }
3347
3348        const ResTable_type* type;
3349        const ResTable_entry* entry;
3350        const Type* typeClass;
3351        ALOGV("Getting entry pkg=%p, t=%d, e=%d\n", package, T, E);
3352        ssize_t offset = getEntry(package, T, E, &mParams, &type, &entry, &typeClass);
3353        ALOGV("Resulting offset=%d\n", offset);
3354        if (offset <= 0) {
3355            // No {entry, appropriate config} pair found in package. If this
3356            // package is an overlay package (ip != 0), this simply means the
3357            // overlay package did not specify a default.
3358            // Non-overlay packages are still required to provide a default.
3359            if (offset < 0 && ip == 0) {
3360                if (set) free(set);
3361                return offset;
3362            }
3363            continue;
3364        }
3365
3366        if ((dtohs(entry->flags)&entry->FLAG_COMPLEX) == 0) {
3367            ALOGW("Skipping entry %p in package table %d because it is not complex!\n",
3368                 (void*)resID, (int)ip);
3369            continue;
3370        }
3371
3372        if (set != NULL && !type->config.isBetterThan(bestConfig, NULL)) {
3373            continue;
3374        }
3375        bestConfig = type->config;
3376        if (set) {
3377            free(set);
3378            set = NULL;
3379        }
3380
3381        const uint16_t entrySize = dtohs(entry->size);
3382        const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
3383            ? dtohl(((const ResTable_map_entry*)entry)->parent.ident) : 0;
3384        const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
3385            ? dtohl(((const ResTable_map_entry*)entry)->count) : 0;
3386
3387        size_t N = count;
3388
3389        TABLE_NOISY(ALOGI("Found map: size=%p parent=%p count=%d\n",
3390                         entrySize, parent, count));
3391
3392        // If this map inherits from another, we need to start
3393        // with its parent's values.  Otherwise start out empty.
3394        TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
3395                           entrySize, parent));
3396        if (parent) {
3397            const bag_entry* parentBag;
3398            uint32_t parentTypeSpecFlags = 0;
3399            const ssize_t NP = getBagLocked(parent, &parentBag, &parentTypeSpecFlags);
3400            const size_t NT = ((NP >= 0) ? NP : 0) + N;
3401            set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
3402            if (set == NULL) {
3403                return NO_MEMORY;
3404            }
3405            if (NP > 0) {
3406                memcpy(set+1, parentBag, NP*sizeof(bag_entry));
3407                set->numAttrs = NP;
3408                TABLE_NOISY(ALOGI("Initialized new bag with %d inherited attributes.\n", NP));
3409            } else {
3410                TABLE_NOISY(ALOGI("Initialized new bag with no inherited attributes.\n"));
3411                set->numAttrs = 0;
3412            }
3413            set->availAttrs = NT;
3414            set->typeSpecFlags = parentTypeSpecFlags;
3415        } else {
3416            set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
3417            if (set == NULL) {
3418                return NO_MEMORY;
3419            }
3420            set->numAttrs = 0;
3421            set->availAttrs = N;
3422            set->typeSpecFlags = 0;
3423        }
3424
3425        if (typeClass->typeSpecFlags != NULL) {
3426            set->typeSpecFlags |= dtohl(typeClass->typeSpecFlags[E]);
3427        } else {
3428            set->typeSpecFlags = -1;
3429        }
3430
3431        // Now merge in the new attributes...
3432        ssize_t curOff = offset;
3433        const ResTable_map* map;
3434        bag_entry* entries = (bag_entry*)(set+1);
3435        size_t curEntry = 0;
3436        uint32_t pos = 0;
3437        TABLE_NOISY(ALOGI("Starting with set %p, entries=%p, avail=%d\n",
3438                     set, entries, set->availAttrs));
3439        while (pos < count) {
3440            TABLE_NOISY(printf("Now at %p\n", (void*)curOff));
3441
3442            if ((size_t)curOff > (dtohl(type->header.size)-sizeof(ResTable_map))) {
3443                ALOGW("ResTable_map at %d is beyond type chunk data %d",
3444                     (int)curOff, dtohl(type->header.size));
3445                return BAD_TYPE;
3446            }
3447            map = (const ResTable_map*)(((const uint8_t*)type) + curOff);
3448            N++;
3449
3450            const uint32_t newName = htodl(map->name.ident);
3451            bool isInside;
3452            uint32_t oldName = 0;
3453            while ((isInside=(curEntry < set->numAttrs))
3454                    && (oldName=entries[curEntry].map.name.ident) < newName) {
3455                TABLE_NOISY(printf("#%d: Keeping existing attribute: 0x%08x\n",
3456                             curEntry, entries[curEntry].map.name.ident));
3457                curEntry++;
3458            }
3459
3460            if ((!isInside) || oldName != newName) {
3461                // This is a new attribute...  figure out what to do with it.
3462                if (set->numAttrs >= set->availAttrs) {
3463                    // Need to alloc more memory...
3464                    const size_t newAvail = set->availAttrs+N;
3465                    set = (bag_set*)realloc(set,
3466                                            sizeof(bag_set)
3467                                            + sizeof(bag_entry)*newAvail);
3468                    if (set == NULL) {
3469                        return NO_MEMORY;
3470                    }
3471                    set->availAttrs = newAvail;
3472                    entries = (bag_entry*)(set+1);
3473                    TABLE_NOISY(printf("Reallocated set %p, entries=%p, avail=%d\n",
3474                                 set, entries, set->availAttrs));
3475                }
3476                if (isInside) {
3477                    // Going in the middle, need to make space.
3478                    memmove(entries+curEntry+1, entries+curEntry,
3479                            sizeof(bag_entry)*(set->numAttrs-curEntry));
3480                    set->numAttrs++;
3481                }
3482                TABLE_NOISY(printf("#%d: Inserting new attribute: 0x%08x\n",
3483                             curEntry, newName));
3484            } else {
3485                TABLE_NOISY(printf("#%d: Replacing existing attribute: 0x%08x\n",
3486                             curEntry, oldName));
3487            }
3488
3489            bag_entry* cur = entries+curEntry;
3490
3491            cur->stringBlock = package->header->index;
3492            cur->map.name.ident = newName;
3493            cur->map.value.copyFrom_dtoh(map->value);
3494            TABLE_NOISY(printf("Setting entry #%d %p: block=%d, name=0x%08x, type=%d, data=0x%08x\n",
3495                         curEntry, cur, cur->stringBlock, cur->map.name.ident,
3496                         cur->map.value.dataType, cur->map.value.data));
3497
3498            // On to the next!
3499            curEntry++;
3500            pos++;
3501            const size_t size = dtohs(map->value.size);
3502            curOff += size + sizeof(*map)-sizeof(map->value);
3503        };
3504        if (curEntry > set->numAttrs) {
3505            set->numAttrs = curEntry;
3506        }
3507    }
3508
3509    // And this is it...
3510    typeSet[e] = set;
3511    if (set) {
3512        if (outTypeSpecFlags != NULL) {
3513            *outTypeSpecFlags = set->typeSpecFlags;
3514        }
3515        *outBag = (bag_entry*)(set+1);
3516        TABLE_NOISY(ALOGI("Returning %d attrs\n", set->numAttrs));
3517        return set->numAttrs;
3518    }
3519    return BAD_INDEX;
3520}
3521
3522void ResTable::setParameters(const ResTable_config* params)
3523{
3524    mLock.lock();
3525    TABLE_GETENTRY(ALOGI("Setting parameters: %s\n", params->toString().string()));
3526    mParams = *params;
3527    for (size_t i=0; i<mPackageGroups.size(); i++) {
3528        TABLE_NOISY(ALOGI("CLEARING BAGS FOR GROUP %d!", i));
3529        mPackageGroups[i]->clearBagCache();
3530    }
3531    mLock.unlock();
3532}
3533
3534void ResTable::getParameters(ResTable_config* params) const
3535{
3536    mLock.lock();
3537    *params = mParams;
3538    mLock.unlock();
3539}
3540
3541struct id_name_map {
3542    uint32_t id;
3543    size_t len;
3544    char16_t name[6];
3545};
3546
3547const static id_name_map ID_NAMES[] = {
3548    { ResTable_map::ATTR_TYPE,  5, { '^', 't', 'y', 'p', 'e' } },
3549    { ResTable_map::ATTR_L10N,  5, { '^', 'l', '1', '0', 'n' } },
3550    { ResTable_map::ATTR_MIN,   4, { '^', 'm', 'i', 'n' } },
3551    { ResTable_map::ATTR_MAX,   4, { '^', 'm', 'a', 'x' } },
3552    { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
3553    { ResTable_map::ATTR_ZERO,  5, { '^', 'z', 'e', 'r', 'o' } },
3554    { ResTable_map::ATTR_ONE,   4, { '^', 'o', 'n', 'e' } },
3555    { ResTable_map::ATTR_TWO,   4, { '^', 't', 'w', 'o' } },
3556    { ResTable_map::ATTR_FEW,   4, { '^', 'f', 'e', 'w' } },
3557    { ResTable_map::ATTR_MANY,  5, { '^', 'm', 'a', 'n', 'y' } },
3558};
3559
3560uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
3561                                     const char16_t* type, size_t typeLen,
3562                                     const char16_t* package,
3563                                     size_t packageLen,
3564                                     uint32_t* outTypeSpecFlags) const
3565{
3566    TABLE_SUPER_NOISY(printf("Identifier for name: error=%d\n", mError));
3567
3568    // Check for internal resource identifier as the very first thing, so
3569    // that we will always find them even when there are no resources.
3570    if (name[0] == '^') {
3571        const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
3572        size_t len;
3573        for (int i=0; i<N; i++) {
3574            const id_name_map* m = ID_NAMES + i;
3575            len = m->len;
3576            if (len != nameLen) {
3577                continue;
3578            }
3579            for (size_t j=1; j<len; j++) {
3580                if (m->name[j] != name[j]) {
3581                    goto nope;
3582                }
3583            }
3584            if (outTypeSpecFlags) {
3585                *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
3586            }
3587            return m->id;
3588nope:
3589            ;
3590        }
3591        if (nameLen > 7) {
3592            if (name[1] == 'i' && name[2] == 'n'
3593                && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
3594                && name[6] == '_') {
3595                int index = atoi(String8(name + 7, nameLen - 7).string());
3596                if (Res_CHECKID(index)) {
3597                    ALOGW("Array resource index: %d is too large.",
3598                         index);
3599                    return 0;
3600                }
3601                if (outTypeSpecFlags) {
3602                    *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
3603                }
3604                return  Res_MAKEARRAY(index);
3605            }
3606        }
3607        return 0;
3608    }
3609
3610    if (mError != NO_ERROR) {
3611        return 0;
3612    }
3613
3614    bool fakePublic = false;
3615
3616    // Figure out the package and type we are looking in...
3617
3618    const char16_t* packageEnd = NULL;
3619    const char16_t* typeEnd = NULL;
3620    const char16_t* const nameEnd = name+nameLen;
3621    const char16_t* p = name;
3622    while (p < nameEnd) {
3623        if (*p == ':') packageEnd = p;
3624        else if (*p == '/') typeEnd = p;
3625        p++;
3626    }
3627    if (*name == '@') {
3628        name++;
3629        if (*name == '*') {
3630            fakePublic = true;
3631            name++;
3632        }
3633    }
3634    if (name >= nameEnd) {
3635        return 0;
3636    }
3637
3638    if (packageEnd) {
3639        package = name;
3640        packageLen = packageEnd-name;
3641        name = packageEnd+1;
3642    } else if (!package) {
3643        return 0;
3644    }
3645
3646    if (typeEnd) {
3647        type = name;
3648        typeLen = typeEnd-name;
3649        name = typeEnd+1;
3650    } else if (!type) {
3651        return 0;
3652    }
3653
3654    if (name >= nameEnd) {
3655        return 0;
3656    }
3657    nameLen = nameEnd-name;
3658
3659    TABLE_NOISY(printf("Looking for identifier: type=%s, name=%s, package=%s\n",
3660                 String8(type, typeLen).string(),
3661                 String8(name, nameLen).string(),
3662                 String8(package, packageLen).string()));
3663
3664    const size_t NG = mPackageGroups.size();
3665    for (size_t ig=0; ig<NG; ig++) {
3666        const PackageGroup* group = mPackageGroups[ig];
3667
3668        if (strzcmp16(package, packageLen,
3669                      group->name.string(), group->name.size())) {
3670            TABLE_NOISY(printf("Skipping package group: %s\n", String8(group->name).string()));
3671            continue;
3672        }
3673
3674        const ssize_t ti = group->basePackage->typeStrings.indexOfString(type, typeLen);
3675        if (ti < 0) {
3676            TABLE_NOISY(printf("Type not found in package %s\n", String8(group->name).string()));
3677            continue;
3678        }
3679
3680        const ssize_t ei = group->basePackage->keyStrings.indexOfString(name, nameLen);
3681        if (ei < 0) {
3682            TABLE_NOISY(printf("Name not found in package %s\n", String8(group->name).string()));
3683            continue;
3684        }
3685
3686        TABLE_NOISY(printf("Search indices: type=%d, name=%d\n", ti, ei));
3687
3688        const Type* const typeConfigs = group->packages[0]->getType(ti);
3689        if (typeConfigs == NULL || typeConfigs->configs.size() <= 0) {
3690            TABLE_NOISY(printf("Expected type structure not found in package %s for idnex %d\n",
3691                               String8(group->name).string(), ti));
3692        }
3693
3694        size_t NTC = typeConfigs->configs.size();
3695        for (size_t tci=0; tci<NTC; tci++) {
3696            const ResTable_type* const ty = typeConfigs->configs[tci];
3697            const uint32_t typeOffset = dtohl(ty->entriesStart);
3698
3699            const uint8_t* const end = ((const uint8_t*)ty) + dtohl(ty->header.size);
3700            const uint32_t* const eindex = (const uint32_t*)
3701                (((const uint8_t*)ty) + dtohs(ty->header.headerSize));
3702
3703            const size_t NE = dtohl(ty->entryCount);
3704            for (size_t i=0; i<NE; i++) {
3705                uint32_t offset = dtohl(eindex[i]);
3706                if (offset == ResTable_type::NO_ENTRY) {
3707                    continue;
3708                }
3709
3710                offset += typeOffset;
3711
3712                if (offset > (dtohl(ty->header.size)-sizeof(ResTable_entry))) {
3713                    ALOGW("ResTable_entry at %d is beyond type chunk data %d",
3714                         offset, dtohl(ty->header.size));
3715                    return 0;
3716                }
3717                if ((offset&0x3) != 0) {
3718                    ALOGW("ResTable_entry at %d (pkg=%d type=%d ent=%d) is not on an integer boundary when looking for %s:%s/%s",
3719                         (int)offset, (int)group->id, (int)ti+1, (int)i,
3720                         String8(package, packageLen).string(),
3721                         String8(type, typeLen).string(),
3722                         String8(name, nameLen).string());
3723                    return 0;
3724                }
3725
3726                const ResTable_entry* const entry = (const ResTable_entry*)
3727                    (((const uint8_t*)ty) + offset);
3728                if (dtohs(entry->size) < sizeof(*entry)) {
3729                    ALOGW("ResTable_entry size %d is too small", dtohs(entry->size));
3730                    return BAD_TYPE;
3731                }
3732
3733                TABLE_SUPER_NOISY(printf("Looking at entry #%d: want str %d, have %d\n",
3734                                         i, ei, dtohl(entry->key.index)));
3735                if (dtohl(entry->key.index) == (size_t)ei) {
3736                    if (outTypeSpecFlags) {
3737                        *outTypeSpecFlags = typeConfigs->typeSpecFlags[i];
3738                        if (fakePublic) {
3739                            *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
3740                        }
3741                    }
3742                    return Res_MAKEID(group->id-1, ti, i);
3743                }
3744            }
3745        }
3746    }
3747
3748    return 0;
3749}
3750
3751bool ResTable::expandResourceRef(const uint16_t* refStr, size_t refLen,
3752                                 String16* outPackage,
3753                                 String16* outType,
3754                                 String16* outName,
3755                                 const String16* defType,
3756                                 const String16* defPackage,
3757                                 const char** outErrorMsg,
3758                                 bool* outPublicOnly)
3759{
3760    const char16_t* packageEnd = NULL;
3761    const char16_t* typeEnd = NULL;
3762    const char16_t* p = refStr;
3763    const char16_t* const end = p + refLen;
3764    while (p < end) {
3765        if (*p == ':') packageEnd = p;
3766        else if (*p == '/') {
3767            typeEnd = p;
3768            break;
3769        }
3770        p++;
3771    }
3772    p = refStr;
3773    if (*p == '@') p++;
3774
3775    if (outPublicOnly != NULL) {
3776        *outPublicOnly = true;
3777    }
3778    if (*p == '*') {
3779        p++;
3780        if (outPublicOnly != NULL) {
3781            *outPublicOnly = false;
3782        }
3783    }
3784
3785    if (packageEnd) {
3786        *outPackage = String16(p, packageEnd-p);
3787        p = packageEnd+1;
3788    } else {
3789        if (!defPackage) {
3790            if (outErrorMsg) {
3791                *outErrorMsg = "No resource package specified";
3792            }
3793            return false;
3794        }
3795        *outPackage = *defPackage;
3796    }
3797    if (typeEnd) {
3798        *outType = String16(p, typeEnd-p);
3799        p = typeEnd+1;
3800    } else {
3801        if (!defType) {
3802            if (outErrorMsg) {
3803                *outErrorMsg = "No resource type specified";
3804            }
3805            return false;
3806        }
3807        *outType = *defType;
3808    }
3809    *outName = String16(p, end-p);
3810    if(**outPackage == 0) {
3811        if(outErrorMsg) {
3812            *outErrorMsg = "Resource package cannot be an empty string";
3813        }
3814        return false;
3815    }
3816    if(**outType == 0) {
3817        if(outErrorMsg) {
3818            *outErrorMsg = "Resource type cannot be an empty string";
3819        }
3820        return false;
3821    }
3822    if(**outName == 0) {
3823        if(outErrorMsg) {
3824            *outErrorMsg = "Resource id cannot be an empty string";
3825        }
3826        return false;
3827    }
3828    return true;
3829}
3830
3831static uint32_t get_hex(char c, bool* outError)
3832{
3833    if (c >= '0' && c <= '9') {
3834        return c - '0';
3835    } else if (c >= 'a' && c <= 'f') {
3836        return c - 'a' + 0xa;
3837    } else if (c >= 'A' && c <= 'F') {
3838        return c - 'A' + 0xa;
3839    }
3840    *outError = true;
3841    return 0;
3842}
3843
3844struct unit_entry
3845{
3846    const char* name;
3847    size_t len;
3848    uint8_t type;
3849    uint32_t unit;
3850    float scale;
3851};
3852
3853static const unit_entry unitNames[] = {
3854    { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
3855    { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
3856    { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
3857    { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
3858    { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
3859    { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
3860    { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
3861    { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
3862    { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
3863    { NULL, 0, 0, 0, 0 }
3864};
3865
3866static bool parse_unit(const char* str, Res_value* outValue,
3867                       float* outScale, const char** outEnd)
3868{
3869    const char* end = str;
3870    while (*end != 0 && !isspace((unsigned char)*end)) {
3871        end++;
3872    }
3873    const size_t len = end-str;
3874
3875    const char* realEnd = end;
3876    while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
3877        realEnd++;
3878    }
3879    if (*realEnd != 0) {
3880        return false;
3881    }
3882
3883    const unit_entry* cur = unitNames;
3884    while (cur->name) {
3885        if (len == cur->len && strncmp(cur->name, str, len) == 0) {
3886            outValue->dataType = cur->type;
3887            outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
3888            *outScale = cur->scale;
3889            *outEnd = end;
3890            //printf("Found unit %s for %s\n", cur->name, str);
3891            return true;
3892        }
3893        cur++;
3894    }
3895
3896    return false;
3897}
3898
3899
3900bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
3901{
3902    while (len > 0 && isspace16(*s)) {
3903        s++;
3904        len--;
3905    }
3906
3907    if (len <= 0) {
3908        return false;
3909    }
3910
3911    size_t i = 0;
3912    int32_t val = 0;
3913    bool neg = false;
3914
3915    if (*s == '-') {
3916        neg = true;
3917        i++;
3918    }
3919
3920    if (s[i] < '0' || s[i] > '9') {
3921        return false;
3922    }
3923
3924    // Decimal or hex?
3925    if (s[i] == '0' && s[i+1] == 'x') {
3926        if (outValue)
3927            outValue->dataType = outValue->TYPE_INT_HEX;
3928        i += 2;
3929        bool error = false;
3930        while (i < len && !error) {
3931            val = (val*16) + get_hex(s[i], &error);
3932            i++;
3933        }
3934        if (error) {
3935            return false;
3936        }
3937    } else {
3938        if (outValue)
3939            outValue->dataType = outValue->TYPE_INT_DEC;
3940        while (i < len) {
3941            if (s[i] < '0' || s[i] > '9') {
3942                return false;
3943            }
3944            val = (val*10) + s[i]-'0';
3945            i++;
3946        }
3947    }
3948
3949    if (neg) val = -val;
3950
3951    while (i < len && isspace16(s[i])) {
3952        i++;
3953    }
3954
3955    if (i == len) {
3956        if (outValue)
3957            outValue->data = val;
3958        return true;
3959    }
3960
3961    return false;
3962}
3963
3964bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
3965{
3966    while (len > 0 && isspace16(*s)) {
3967        s++;
3968        len--;
3969    }
3970
3971    if (len <= 0) {
3972        return false;
3973    }
3974
3975    char buf[128];
3976    int i=0;
3977    while (len > 0 && *s != 0 && i < 126) {
3978        if (*s > 255) {
3979            return false;
3980        }
3981        buf[i++] = *s++;
3982        len--;
3983    }
3984
3985    if (len > 0) {
3986        return false;
3987    }
3988    if (buf[0] < '0' && buf[0] > '9' && buf[0] != '.') {
3989        return false;
3990    }
3991
3992    buf[i] = 0;
3993    const char* end;
3994    float f = strtof(buf, (char**)&end);
3995
3996    if (*end != 0 && !isspace((unsigned char)*end)) {
3997        // Might be a unit...
3998        float scale;
3999        if (parse_unit(end, outValue, &scale, &end)) {
4000            f *= scale;
4001            const bool neg = f < 0;
4002            if (neg) f = -f;
4003            uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4004            uint32_t radix;
4005            uint32_t shift;
4006            if ((bits&0x7fffff) == 0) {
4007                // Always use 23p0 if there is no fraction, just to make
4008                // things easier to read.
4009                radix = Res_value::COMPLEX_RADIX_23p0;
4010                shift = 23;
4011            } else if ((bits&0xffffffffff800000LL) == 0) {
4012                // Magnitude is zero -- can fit in 0 bits of precision.
4013                radix = Res_value::COMPLEX_RADIX_0p23;
4014                shift = 0;
4015            } else if ((bits&0xffffffff80000000LL) == 0) {
4016                // Magnitude can fit in 8 bits of precision.
4017                radix = Res_value::COMPLEX_RADIX_8p15;
4018                shift = 8;
4019            } else if ((bits&0xffffff8000000000LL) == 0) {
4020                // Magnitude can fit in 16 bits of precision.
4021                radix = Res_value::COMPLEX_RADIX_16p7;
4022                shift = 16;
4023            } else {
4024                // Magnitude needs entire range, so no fractional part.
4025                radix = Res_value::COMPLEX_RADIX_23p0;
4026                shift = 23;
4027            }
4028            int32_t mantissa = (int32_t)(
4029                (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
4030            if (neg) {
4031                mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
4032            }
4033            outValue->data |=
4034                (radix<<Res_value::COMPLEX_RADIX_SHIFT)
4035                | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
4036            //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
4037            //       f * (neg ? -1 : 1), bits, f*(1<<23),
4038            //       radix, shift, outValue->data);
4039            return true;
4040        }
4041        return false;
4042    }
4043
4044    while (*end != 0 && isspace((unsigned char)*end)) {
4045        end++;
4046    }
4047
4048    if (*end == 0) {
4049        if (outValue) {
4050            outValue->dataType = outValue->TYPE_FLOAT;
4051            *(float*)(&outValue->data) = f;
4052            return true;
4053        }
4054    }
4055
4056    return false;
4057}
4058
4059bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4060                             const char16_t* s, size_t len,
4061                             bool preserveSpaces, bool coerceType,
4062                             uint32_t attrID,
4063                             const String16* defType,
4064                             const String16* defPackage,
4065                             Accessor* accessor,
4066                             void* accessorCookie,
4067                             uint32_t attrType,
4068                             bool enforcePrivate) const
4069{
4070    bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4071    const char* errorMsg = NULL;
4072
4073    outValue->size = sizeof(Res_value);
4074    outValue->res0 = 0;
4075
4076    // First strip leading/trailing whitespace.  Do this before handling
4077    // escapes, so they can be used to force whitespace into the string.
4078    if (!preserveSpaces) {
4079        while (len > 0 && isspace16(*s)) {
4080            s++;
4081            len--;
4082        }
4083        while (len > 0 && isspace16(s[len-1])) {
4084            len--;
4085        }
4086        // If the string ends with '\', then we keep the space after it.
4087        if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4088            len++;
4089        }
4090    }
4091
4092    //printf("Value for: %s\n", String8(s, len).string());
4093
4094    uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4095    uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4096    bool fromAccessor = false;
4097    if (attrID != 0 && !Res_INTERNALID(attrID)) {
4098        const ssize_t p = getResourcePackageIndex(attrID);
4099        const bag_entry* bag;
4100        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4101        //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4102        if (cnt >= 0) {
4103            while (cnt > 0) {
4104                //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4105                switch (bag->map.name.ident) {
4106                case ResTable_map::ATTR_TYPE:
4107                    attrType = bag->map.value.data;
4108                    break;
4109                case ResTable_map::ATTR_MIN:
4110                    attrMin = bag->map.value.data;
4111                    break;
4112                case ResTable_map::ATTR_MAX:
4113                    attrMax = bag->map.value.data;
4114                    break;
4115                case ResTable_map::ATTR_L10N:
4116                    l10nReq = bag->map.value.data;
4117                    break;
4118                }
4119                bag++;
4120                cnt--;
4121            }
4122            unlockBag(bag);
4123        } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4124            fromAccessor = true;
4125            if (attrType == ResTable_map::TYPE_ENUM
4126                    || attrType == ResTable_map::TYPE_FLAGS
4127                    || attrType == ResTable_map::TYPE_INTEGER) {
4128                accessor->getAttributeMin(attrID, &attrMin);
4129                accessor->getAttributeMax(attrID, &attrMax);
4130            }
4131            if (localizationSetting) {
4132                l10nReq = accessor->getAttributeL10N(attrID);
4133            }
4134        }
4135    }
4136
4137    const bool canStringCoerce =
4138        coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4139
4140    if (*s == '@') {
4141        outValue->dataType = outValue->TYPE_REFERENCE;
4142
4143        // Note: we don't check attrType here because the reference can
4144        // be to any other type; we just need to count on the client making
4145        // sure the referenced type is correct.
4146
4147        //printf("Looking up ref: %s\n", String8(s, len).string());
4148
4149        // It's a reference!
4150        if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4151            outValue->data = 0;
4152            return true;
4153        } else {
4154            bool createIfNotFound = false;
4155            const char16_t* resourceRefName;
4156            int resourceNameLen;
4157            if (len > 2 && s[1] == '+') {
4158                createIfNotFound = true;
4159                resourceRefName = s + 2;
4160                resourceNameLen = len - 2;
4161            } else if (len > 2 && s[1] == '*') {
4162                enforcePrivate = false;
4163                resourceRefName = s + 2;
4164                resourceNameLen = len - 2;
4165            } else {
4166                createIfNotFound = false;
4167                resourceRefName = s + 1;
4168                resourceNameLen = len - 1;
4169            }
4170            String16 package, type, name;
4171            if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
4172                                   defType, defPackage, &errorMsg)) {
4173                if (accessor != NULL) {
4174                    accessor->reportError(accessorCookie, errorMsg);
4175                }
4176                return false;
4177            }
4178
4179            uint32_t specFlags = 0;
4180            uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
4181                    type.size(), package.string(), package.size(), &specFlags);
4182            if (rid != 0) {
4183                if (enforcePrivate) {
4184                    if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4185                        if (accessor != NULL) {
4186                            accessor->reportError(accessorCookie, "Resource is not public.");
4187                        }
4188                        return false;
4189                    }
4190                }
4191                if (!accessor) {
4192                    outValue->data = rid;
4193                    return true;
4194                }
4195                rid = Res_MAKEID(
4196                    accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4197                    Res_GETTYPE(rid), Res_GETENTRY(rid));
4198                TABLE_NOISY(printf("Incl %s:%s/%s: 0x%08x\n",
4199                       String8(package).string(), String8(type).string(),
4200                       String8(name).string(), rid));
4201                outValue->data = rid;
4202                return true;
4203            }
4204
4205            if (accessor) {
4206                uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
4207                                                                       createIfNotFound);
4208                if (rid != 0) {
4209                    TABLE_NOISY(printf("Pckg %s:%s/%s: 0x%08x\n",
4210                           String8(package).string(), String8(type).string(),
4211                           String8(name).string(), rid));
4212                    outValue->data = rid;
4213                    return true;
4214                }
4215            }
4216        }
4217
4218        if (accessor != NULL) {
4219            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4220        }
4221        return false;
4222    }
4223
4224    // if we got to here, and localization is required and it's not a reference,
4225    // complain and bail.
4226    if (l10nReq == ResTable_map::L10N_SUGGESTED) {
4227        if (localizationSetting) {
4228            if (accessor != NULL) {
4229                accessor->reportError(accessorCookie, "This attribute must be localized.");
4230            }
4231        }
4232    }
4233
4234    if (*s == '#') {
4235        // It's a color!  Convert to an integer of the form 0xaarrggbb.
4236        uint32_t color = 0;
4237        bool error = false;
4238        if (len == 4) {
4239            outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
4240            color |= 0xFF000000;
4241            color |= get_hex(s[1], &error) << 20;
4242            color |= get_hex(s[1], &error) << 16;
4243            color |= get_hex(s[2], &error) << 12;
4244            color |= get_hex(s[2], &error) << 8;
4245            color |= get_hex(s[3], &error) << 4;
4246            color |= get_hex(s[3], &error);
4247        } else if (len == 5) {
4248            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
4249            color |= get_hex(s[1], &error) << 28;
4250            color |= get_hex(s[1], &error) << 24;
4251            color |= get_hex(s[2], &error) << 20;
4252            color |= get_hex(s[2], &error) << 16;
4253            color |= get_hex(s[3], &error) << 12;
4254            color |= get_hex(s[3], &error) << 8;
4255            color |= get_hex(s[4], &error) << 4;
4256            color |= get_hex(s[4], &error);
4257        } else if (len == 7) {
4258            outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
4259            color |= 0xFF000000;
4260            color |= get_hex(s[1], &error) << 20;
4261            color |= get_hex(s[2], &error) << 16;
4262            color |= get_hex(s[3], &error) << 12;
4263            color |= get_hex(s[4], &error) << 8;
4264            color |= get_hex(s[5], &error) << 4;
4265            color |= get_hex(s[6], &error);
4266        } else if (len == 9) {
4267            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
4268            color |= get_hex(s[1], &error) << 28;
4269            color |= get_hex(s[2], &error) << 24;
4270            color |= get_hex(s[3], &error) << 20;
4271            color |= get_hex(s[4], &error) << 16;
4272            color |= get_hex(s[5], &error) << 12;
4273            color |= get_hex(s[6], &error) << 8;
4274            color |= get_hex(s[7], &error) << 4;
4275            color |= get_hex(s[8], &error);
4276        } else {
4277            error = true;
4278        }
4279        if (!error) {
4280            if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
4281                if (!canStringCoerce) {
4282                    if (accessor != NULL) {
4283                        accessor->reportError(accessorCookie,
4284                                "Color types not allowed");
4285                    }
4286                    return false;
4287                }
4288            } else {
4289                outValue->data = color;
4290                //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
4291                return true;
4292            }
4293        } else {
4294            if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
4295                if (accessor != NULL) {
4296                    accessor->reportError(accessorCookie, "Color value not valid --"
4297                            " must be #rgb, #argb, #rrggbb, or #aarrggbb");
4298                }
4299                #if 0
4300                fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
4301                        "Resource File", //(const char*)in->getPrintableSource(),
4302                        String8(*curTag).string(),
4303                        String8(s, len).string());
4304                #endif
4305                return false;
4306            }
4307        }
4308    }
4309
4310    if (*s == '?') {
4311        outValue->dataType = outValue->TYPE_ATTRIBUTE;
4312
4313        // Note: we don't check attrType here because the reference can
4314        // be to any other type; we just need to count on the client making
4315        // sure the referenced type is correct.
4316
4317        //printf("Looking up attr: %s\n", String8(s, len).string());
4318
4319        static const String16 attr16("attr");
4320        String16 package, type, name;
4321        if (!expandResourceRef(s+1, len-1, &package, &type, &name,
4322                               &attr16, defPackage, &errorMsg)) {
4323            if (accessor != NULL) {
4324                accessor->reportError(accessorCookie, errorMsg);
4325            }
4326            return false;
4327        }
4328
4329        //printf("Pkg: %s, Type: %s, Name: %s\n",
4330        //       String8(package).string(), String8(type).string(),
4331        //       String8(name).string());
4332        uint32_t specFlags = 0;
4333        uint32_t rid =
4334            identifierForName(name.string(), name.size(),
4335                              type.string(), type.size(),
4336                              package.string(), package.size(), &specFlags);
4337        if (rid != 0) {
4338            if (enforcePrivate) {
4339                if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4340                    if (accessor != NULL) {
4341                        accessor->reportError(accessorCookie, "Attribute is not public.");
4342                    }
4343                    return false;
4344                }
4345            }
4346            if (!accessor) {
4347                outValue->data = rid;
4348                return true;
4349            }
4350            rid = Res_MAKEID(
4351                accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4352                Res_GETTYPE(rid), Res_GETENTRY(rid));
4353            //printf("Incl %s:%s/%s: 0x%08x\n",
4354            //       String8(package).string(), String8(type).string(),
4355            //       String8(name).string(), rid);
4356            outValue->data = rid;
4357            return true;
4358        }
4359
4360        if (accessor) {
4361            uint32_t rid = accessor->getCustomResource(package, type, name);
4362            if (rid != 0) {
4363                //printf("Mine %s:%s/%s: 0x%08x\n",
4364                //       String8(package).string(), String8(type).string(),
4365                //       String8(name).string(), rid);
4366                outValue->data = rid;
4367                return true;
4368            }
4369        }
4370
4371        if (accessor != NULL) {
4372            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4373        }
4374        return false;
4375    }
4376
4377    if (stringToInt(s, len, outValue)) {
4378        if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
4379            // If this type does not allow integers, but does allow floats,
4380            // fall through on this error case because the float type should
4381            // be able to accept any integer value.
4382            if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
4383                if (accessor != NULL) {
4384                    accessor->reportError(accessorCookie, "Integer types not allowed");
4385                }
4386                return false;
4387            }
4388        } else {
4389            if (((int32_t)outValue->data) < ((int32_t)attrMin)
4390                    || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
4391                if (accessor != NULL) {
4392                    accessor->reportError(accessorCookie, "Integer value out of range");
4393                }
4394                return false;
4395            }
4396            return true;
4397        }
4398    }
4399
4400    if (stringToFloat(s, len, outValue)) {
4401        if (outValue->dataType == Res_value::TYPE_DIMENSION) {
4402            if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
4403                return true;
4404            }
4405            if (!canStringCoerce) {
4406                if (accessor != NULL) {
4407                    accessor->reportError(accessorCookie, "Dimension types not allowed");
4408                }
4409                return false;
4410            }
4411        } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
4412            if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
4413                return true;
4414            }
4415            if (!canStringCoerce) {
4416                if (accessor != NULL) {
4417                    accessor->reportError(accessorCookie, "Fraction types not allowed");
4418                }
4419                return false;
4420            }
4421        } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
4422            if (!canStringCoerce) {
4423                if (accessor != NULL) {
4424                    accessor->reportError(accessorCookie, "Float types not allowed");
4425                }
4426                return false;
4427            }
4428        } else {
4429            return true;
4430        }
4431    }
4432
4433    if (len == 4) {
4434        if ((s[0] == 't' || s[0] == 'T') &&
4435            (s[1] == 'r' || s[1] == 'R') &&
4436            (s[2] == 'u' || s[2] == 'U') &&
4437            (s[3] == 'e' || s[3] == 'E')) {
4438            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4439                if (!canStringCoerce) {
4440                    if (accessor != NULL) {
4441                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4442                    }
4443                    return false;
4444                }
4445            } else {
4446                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4447                outValue->data = (uint32_t)-1;
4448                return true;
4449            }
4450        }
4451    }
4452
4453    if (len == 5) {
4454        if ((s[0] == 'f' || s[0] == 'F') &&
4455            (s[1] == 'a' || s[1] == 'A') &&
4456            (s[2] == 'l' || s[2] == 'L') &&
4457            (s[3] == 's' || s[3] == 'S') &&
4458            (s[4] == 'e' || s[4] == 'E')) {
4459            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4460                if (!canStringCoerce) {
4461                    if (accessor != NULL) {
4462                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4463                    }
4464                    return false;
4465                }
4466            } else {
4467                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4468                outValue->data = 0;
4469                return true;
4470            }
4471        }
4472    }
4473
4474    if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
4475        const ssize_t p = getResourcePackageIndex(attrID);
4476        const bag_entry* bag;
4477        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4478        //printf("Got %d for enum\n", cnt);
4479        if (cnt >= 0) {
4480            resource_name rname;
4481            while (cnt > 0) {
4482                if (!Res_INTERNALID(bag->map.name.ident)) {
4483                    //printf("Trying attr #%08x\n", bag->map.name.ident);
4484                    if (getResourceName(bag->map.name.ident, &rname)) {
4485                        #if 0
4486                        printf("Matching %s against %s (0x%08x)\n",
4487                               String8(s, len).string(),
4488                               String8(rname.name, rname.nameLen).string(),
4489                               bag->map.name.ident);
4490                        #endif
4491                        if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
4492                            outValue->dataType = bag->map.value.dataType;
4493                            outValue->data = bag->map.value.data;
4494                            unlockBag(bag);
4495                            return true;
4496                        }
4497                    }
4498
4499                }
4500                bag++;
4501                cnt--;
4502            }
4503            unlockBag(bag);
4504        }
4505
4506        if (fromAccessor) {
4507            if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
4508                return true;
4509            }
4510        }
4511    }
4512
4513    if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
4514        const ssize_t p = getResourcePackageIndex(attrID);
4515        const bag_entry* bag;
4516        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4517        //printf("Got %d for flags\n", cnt);
4518        if (cnt >= 0) {
4519            bool failed = false;
4520            resource_name rname;
4521            outValue->dataType = Res_value::TYPE_INT_HEX;
4522            outValue->data = 0;
4523            const char16_t* end = s + len;
4524            const char16_t* pos = s;
4525            while (pos < end && !failed) {
4526                const char16_t* start = pos;
4527                pos++;
4528                while (pos < end && *pos != '|') {
4529                    pos++;
4530                }
4531                //printf("Looking for: %s\n", String8(start, pos-start).string());
4532                const bag_entry* bagi = bag;
4533                ssize_t i;
4534                for (i=0; i<cnt; i++, bagi++) {
4535                    if (!Res_INTERNALID(bagi->map.name.ident)) {
4536                        //printf("Trying attr #%08x\n", bagi->map.name.ident);
4537                        if (getResourceName(bagi->map.name.ident, &rname)) {
4538                            #if 0
4539                            printf("Matching %s against %s (0x%08x)\n",
4540                                   String8(start,pos-start).string(),
4541                                   String8(rname.name, rname.nameLen).string(),
4542                                   bagi->map.name.ident);
4543                            #endif
4544                            if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
4545                                outValue->data |= bagi->map.value.data;
4546                                break;
4547                            }
4548                        }
4549                    }
4550                }
4551                if (i >= cnt) {
4552                    // Didn't find this flag identifier.
4553                    failed = true;
4554                }
4555                if (pos < end) {
4556                    pos++;
4557                }
4558            }
4559            unlockBag(bag);
4560            if (!failed) {
4561                //printf("Final flag value: 0x%lx\n", outValue->data);
4562                return true;
4563            }
4564        }
4565
4566
4567        if (fromAccessor) {
4568            if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
4569                //printf("Final flag value: 0x%lx\n", outValue->data);
4570                return true;
4571            }
4572        }
4573    }
4574
4575    if ((attrType&ResTable_map::TYPE_STRING) == 0) {
4576        if (accessor != NULL) {
4577            accessor->reportError(accessorCookie, "String types not allowed");
4578        }
4579        return false;
4580    }
4581
4582    // Generic string handling...
4583    outValue->dataType = outValue->TYPE_STRING;
4584    if (outString) {
4585        bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
4586        if (accessor != NULL) {
4587            accessor->reportError(accessorCookie, errorMsg);
4588        }
4589        return failed;
4590    }
4591
4592    return true;
4593}
4594
4595bool ResTable::collectString(String16* outString,
4596                             const char16_t* s, size_t len,
4597                             bool preserveSpaces,
4598                             const char** outErrorMsg,
4599                             bool append)
4600{
4601    String16 tmp;
4602
4603    char quoted = 0;
4604    const char16_t* p = s;
4605    while (p < (s+len)) {
4606        while (p < (s+len)) {
4607            const char16_t c = *p;
4608            if (c == '\\') {
4609                break;
4610            }
4611            if (!preserveSpaces) {
4612                if (quoted == 0 && isspace16(c)
4613                    && (c != ' ' || isspace16(*(p+1)))) {
4614                    break;
4615                }
4616                if (c == '"' && (quoted == 0 || quoted == '"')) {
4617                    break;
4618                }
4619                if (c == '\'' && (quoted == 0 || quoted == '\'')) {
4620                    /*
4621                     * In practice, when people write ' instead of \'
4622                     * in a string, they are doing it by accident
4623                     * instead of really meaning to use ' as a quoting
4624                     * character.  Warn them so they don't lose it.
4625                     */
4626                    if (outErrorMsg) {
4627                        *outErrorMsg = "Apostrophe not preceded by \\";
4628                    }
4629                    return false;
4630                }
4631            }
4632            p++;
4633        }
4634        if (p < (s+len)) {
4635            if (p > s) {
4636                tmp.append(String16(s, p-s));
4637            }
4638            if (!preserveSpaces && (*p == '"' || *p == '\'')) {
4639                if (quoted == 0) {
4640                    quoted = *p;
4641                } else {
4642                    quoted = 0;
4643                }
4644                p++;
4645            } else if (!preserveSpaces && isspace16(*p)) {
4646                // Space outside of a quote -- consume all spaces and
4647                // leave a single plain space char.
4648                tmp.append(String16(" "));
4649                p++;
4650                while (p < (s+len) && isspace16(*p)) {
4651                    p++;
4652                }
4653            } else if (*p == '\\') {
4654                p++;
4655                if (p < (s+len)) {
4656                    switch (*p) {
4657                    case 't':
4658                        tmp.append(String16("\t"));
4659                        break;
4660                    case 'n':
4661                        tmp.append(String16("\n"));
4662                        break;
4663                    case '#':
4664                        tmp.append(String16("#"));
4665                        break;
4666                    case '@':
4667                        tmp.append(String16("@"));
4668                        break;
4669                    case '?':
4670                        tmp.append(String16("?"));
4671                        break;
4672                    case '"':
4673                        tmp.append(String16("\""));
4674                        break;
4675                    case '\'':
4676                        tmp.append(String16("'"));
4677                        break;
4678                    case '\\':
4679                        tmp.append(String16("\\"));
4680                        break;
4681                    case 'u':
4682                    {
4683                        char16_t chr = 0;
4684                        int i = 0;
4685                        while (i < 4 && p[1] != 0) {
4686                            p++;
4687                            i++;
4688                            int c;
4689                            if (*p >= '0' && *p <= '9') {
4690                                c = *p - '0';
4691                            } else if (*p >= 'a' && *p <= 'f') {
4692                                c = *p - 'a' + 10;
4693                            } else if (*p >= 'A' && *p <= 'F') {
4694                                c = *p - 'A' + 10;
4695                            } else {
4696                                if (outErrorMsg) {
4697                                    *outErrorMsg = "Bad character in \\u unicode escape sequence";
4698                                }
4699                                return false;
4700                            }
4701                            chr = (chr<<4) | c;
4702                        }
4703                        tmp.append(String16(&chr, 1));
4704                    } break;
4705                    default:
4706                        // ignore unknown escape chars.
4707                        break;
4708                    }
4709                    p++;
4710                }
4711            }
4712            len -= (p-s);
4713            s = p;
4714        }
4715    }
4716
4717    if (tmp.size() != 0) {
4718        if (len > 0) {
4719            tmp.append(String16(s, len));
4720        }
4721        if (append) {
4722            outString->append(tmp);
4723        } else {
4724            outString->setTo(tmp);
4725        }
4726    } else {
4727        if (append) {
4728            outString->append(String16(s, len));
4729        } else {
4730            outString->setTo(s, len);
4731        }
4732    }
4733
4734    return true;
4735}
4736
4737size_t ResTable::getBasePackageCount() const
4738{
4739    if (mError != NO_ERROR) {
4740        return 0;
4741    }
4742    return mPackageGroups.size();
4743}
4744
4745const char16_t* ResTable::getBasePackageName(size_t idx) const
4746{
4747    if (mError != NO_ERROR) {
4748        return 0;
4749    }
4750    LOG_FATAL_IF(idx >= mPackageGroups.size(),
4751                 "Requested package index %d past package count %d",
4752                 (int)idx, (int)mPackageGroups.size());
4753    return mPackageGroups[idx]->name.string();
4754}
4755
4756uint32_t ResTable::getBasePackageId(size_t idx) const
4757{
4758    if (mError != NO_ERROR) {
4759        return 0;
4760    }
4761    LOG_FATAL_IF(idx >= mPackageGroups.size(),
4762                 "Requested package index %d past package count %d",
4763                 (int)idx, (int)mPackageGroups.size());
4764    return mPackageGroups[idx]->id;
4765}
4766
4767size_t ResTable::getTableCount() const
4768{
4769    return mHeaders.size();
4770}
4771
4772const ResStringPool* ResTable::getTableStringBlock(size_t index) const
4773{
4774    return &mHeaders[index]->values;
4775}
4776
4777void* ResTable::getTableCookie(size_t index) const
4778{
4779    return mHeaders[index]->cookie;
4780}
4781
4782void ResTable::getConfigurations(Vector<ResTable_config>* configs) const
4783{
4784    const size_t I = mPackageGroups.size();
4785    for (size_t i=0; i<I; i++) {
4786        const PackageGroup* packageGroup = mPackageGroups[i];
4787        const size_t J = packageGroup->packages.size();
4788        for (size_t j=0; j<J; j++) {
4789            const Package* package = packageGroup->packages[j];
4790            const size_t K = package->types.size();
4791            for (size_t k=0; k<K; k++) {
4792                const Type* type = package->types[k];
4793                if (type == NULL) continue;
4794                const size_t L = type->configs.size();
4795                for (size_t l=0; l<L; l++) {
4796                    const ResTable_type* config = type->configs[l];
4797                    const ResTable_config* cfg = &config->config;
4798                    // only insert unique
4799                    const size_t M = configs->size();
4800                    size_t m;
4801                    for (m=0; m<M; m++) {
4802                        if (0 == (*configs)[m].compare(*cfg)) {
4803                            break;
4804                        }
4805                    }
4806                    // if we didn't find it
4807                    if (m == M) {
4808                        configs->add(*cfg);
4809                    }
4810                }
4811            }
4812        }
4813    }
4814}
4815
4816void ResTable::getLocales(Vector<String8>* locales) const
4817{
4818    Vector<ResTable_config> configs;
4819    ALOGV("calling getConfigurations");
4820    getConfigurations(&configs);
4821    ALOGV("called getConfigurations size=%d", (int)configs.size());
4822    const size_t I = configs.size();
4823    for (size_t i=0; i<I; i++) {
4824        char locale[6];
4825        configs[i].getLocale(locale);
4826        const size_t J = locales->size();
4827        size_t j;
4828        for (j=0; j<J; j++) {
4829            if (0 == strcmp(locale, (*locales)[j].string())) {
4830                break;
4831            }
4832        }
4833        if (j == J) {
4834            locales->add(String8(locale));
4835        }
4836    }
4837}
4838
4839ssize_t ResTable::getEntry(
4840    const Package* package, int typeIndex, int entryIndex,
4841    const ResTable_config* config,
4842    const ResTable_type** outType, const ResTable_entry** outEntry,
4843    const Type** outTypeClass) const
4844{
4845    ALOGV("Getting entry from package %p\n", package);
4846    const ResTable_package* const pkg = package->package;
4847
4848    const Type* allTypes = package->getType(typeIndex);
4849    ALOGV("allTypes=%p\n", allTypes);
4850    if (allTypes == NULL) {
4851        ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
4852        return 0;
4853    }
4854
4855    if ((size_t)entryIndex >= allTypes->entryCount) {
4856        ALOGW("getEntry failing because entryIndex %d is beyond type entryCount %d",
4857            entryIndex, (int)allTypes->entryCount);
4858        return BAD_TYPE;
4859    }
4860
4861    const ResTable_type* type = NULL;
4862    uint32_t offset = ResTable_type::NO_ENTRY;
4863    ResTable_config bestConfig;
4864    memset(&bestConfig, 0, sizeof(bestConfig)); // make the compiler shut up
4865
4866    const size_t NT = allTypes->configs.size();
4867    for (size_t i=0; i<NT; i++) {
4868        const ResTable_type* const thisType = allTypes->configs[i];
4869        if (thisType == NULL) continue;
4870
4871        ResTable_config thisConfig;
4872        thisConfig.copyFromDtoH(thisType->config);
4873
4874        TABLE_GETENTRY(ALOGI("Match entry 0x%x in type 0x%x (sz 0x%x): %s\n",
4875                           entryIndex, typeIndex+1, dtohl(thisType->config.size),
4876                           thisConfig.toString().string()));
4877
4878        // Check to make sure this one is valid for the current parameters.
4879        if (config && !thisConfig.match(*config)) {
4880            TABLE_GETENTRY(ALOGI("Does not match config!\n"));
4881            continue;
4882        }
4883
4884        // Check if there is the desired entry in this type.
4885
4886        const uint8_t* const end = ((const uint8_t*)thisType)
4887            + dtohl(thisType->header.size);
4888        const uint32_t* const eindex = (const uint32_t*)
4889            (((const uint8_t*)thisType) + dtohs(thisType->header.headerSize));
4890
4891        uint32_t thisOffset = dtohl(eindex[entryIndex]);
4892        if (thisOffset == ResTable_type::NO_ENTRY) {
4893            TABLE_GETENTRY(ALOGI("Skipping because it is not defined!\n"));
4894            continue;
4895        }
4896
4897        if (type != NULL) {
4898            // Check if this one is less specific than the last found.  If so,
4899            // we will skip it.  We check starting with things we most care
4900            // about to those we least care about.
4901            if (!thisConfig.isBetterThan(bestConfig, config)) {
4902                TABLE_GETENTRY(ALOGI("This config is worse than last!\n"));
4903                continue;
4904            }
4905        }
4906
4907        type = thisType;
4908        offset = thisOffset;
4909        bestConfig = thisConfig;
4910        TABLE_GETENTRY(ALOGI("Best entry so far -- using it!\n"));
4911        if (!config) break;
4912    }
4913
4914    if (type == NULL) {
4915        TABLE_GETENTRY(ALOGI("No value found for requested entry!\n"));
4916        return BAD_INDEX;
4917    }
4918
4919    offset += dtohl(type->entriesStart);
4920    TABLE_NOISY(aout << "Looking in resource table " << package->header->header
4921          << ", typeOff="
4922          << (void*)(((const char*)type)-((const char*)package->header->header))
4923          << ", offset=" << (void*)offset << endl);
4924
4925    if (offset > (dtohl(type->header.size)-sizeof(ResTable_entry))) {
4926        ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
4927             offset, dtohl(type->header.size));
4928        return BAD_TYPE;
4929    }
4930    if ((offset&0x3) != 0) {
4931        ALOGW("ResTable_entry at 0x%x is not on an integer boundary",
4932             offset);
4933        return BAD_TYPE;
4934    }
4935
4936    const ResTable_entry* const entry = (const ResTable_entry*)
4937        (((const uint8_t*)type) + offset);
4938    if (dtohs(entry->size) < sizeof(*entry)) {
4939        ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
4940        return BAD_TYPE;
4941    }
4942
4943    *outType = type;
4944    *outEntry = entry;
4945    if (outTypeClass != NULL) {
4946        *outTypeClass = allTypes;
4947    }
4948    return offset + dtohs(entry->size);
4949}
4950
4951status_t ResTable::parsePackage(const ResTable_package* const pkg,
4952                                const Header* const header, uint32_t idmap_id)
4953{
4954    const uint8_t* base = (const uint8_t*)pkg;
4955    status_t err = validate_chunk(&pkg->header, sizeof(*pkg),
4956                                  header->dataEnd, "ResTable_package");
4957    if (err != NO_ERROR) {
4958        return (mError=err);
4959    }
4960
4961    const size_t pkgSize = dtohl(pkg->header.size);
4962
4963    if (dtohl(pkg->typeStrings) >= pkgSize) {
4964        ALOGW("ResTable_package type strings at %p are past chunk size %p.",
4965             (void*)dtohl(pkg->typeStrings), (void*)pkgSize);
4966        return (mError=BAD_TYPE);
4967    }
4968    if ((dtohl(pkg->typeStrings)&0x3) != 0) {
4969        ALOGW("ResTable_package type strings at %p is not on an integer boundary.",
4970             (void*)dtohl(pkg->typeStrings));
4971        return (mError=BAD_TYPE);
4972    }
4973    if (dtohl(pkg->keyStrings) >= pkgSize) {
4974        ALOGW("ResTable_package key strings at %p are past chunk size %p.",
4975             (void*)dtohl(pkg->keyStrings), (void*)pkgSize);
4976        return (mError=BAD_TYPE);
4977    }
4978    if ((dtohl(pkg->keyStrings)&0x3) != 0) {
4979        ALOGW("ResTable_package key strings at %p is not on an integer boundary.",
4980             (void*)dtohl(pkg->keyStrings));
4981        return (mError=BAD_TYPE);
4982    }
4983
4984    Package* package = NULL;
4985    PackageGroup* group = NULL;
4986    uint32_t id = idmap_id != 0 ? idmap_id : dtohl(pkg->id);
4987    // If at this point id == 0, pkg is an overlay package without a
4988    // corresponding idmap. During regular usage, overlay packages are
4989    // always loaded alongside their idmaps, but during idmap creation
4990    // the package is temporarily loaded by itself.
4991    if (id < 256) {
4992
4993        package = new Package(this, header, pkg);
4994        if (package == NULL) {
4995            return (mError=NO_MEMORY);
4996        }
4997
4998        size_t idx = mPackageMap[id];
4999        if (idx == 0) {
5000            idx = mPackageGroups.size()+1;
5001
5002            char16_t tmpName[sizeof(pkg->name)/sizeof(char16_t)];
5003            strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(char16_t));
5004            group = new PackageGroup(this, String16(tmpName), id);
5005            if (group == NULL) {
5006                delete package;
5007                return (mError=NO_MEMORY);
5008            }
5009
5010            err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
5011                                           header->dataEnd-(base+dtohl(pkg->typeStrings)));
5012            if (err != NO_ERROR) {
5013                delete group;
5014                delete package;
5015                return (mError=err);
5016            }
5017            err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
5018                                          header->dataEnd-(base+dtohl(pkg->keyStrings)));
5019            if (err != NO_ERROR) {
5020                delete group;
5021                delete package;
5022                return (mError=err);
5023            }
5024
5025            //printf("Adding new package id %d at index %d\n", id, idx);
5026            err = mPackageGroups.add(group);
5027            if (err < NO_ERROR) {
5028                return (mError=err);
5029            }
5030            group->basePackage = package;
5031
5032            mPackageMap[id] = (uint8_t)idx;
5033        } else {
5034            group = mPackageGroups.itemAt(idx-1);
5035            if (group == NULL) {
5036                return (mError=UNKNOWN_ERROR);
5037            }
5038        }
5039        err = group->packages.add(package);
5040        if (err < NO_ERROR) {
5041            return (mError=err);
5042        }
5043    } else {
5044        LOG_ALWAYS_FATAL("Package id out of range");
5045        return NO_ERROR;
5046    }
5047
5048
5049    // Iterate through all chunks.
5050    size_t curPackage = 0;
5051
5052    const ResChunk_header* chunk =
5053        (const ResChunk_header*)(((const uint8_t*)pkg)
5054                                 + dtohs(pkg->header.headerSize));
5055    const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
5056    while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
5057           ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
5058        TABLE_NOISY(ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
5059                         dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
5060                         (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
5061        const size_t csize = dtohl(chunk->size);
5062        const uint16_t ctype = dtohs(chunk->type);
5063        if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
5064            const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
5065            err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
5066                                 endPos, "ResTable_typeSpec");
5067            if (err != NO_ERROR) {
5068                return (mError=err);
5069            }
5070
5071            const size_t typeSpecSize = dtohl(typeSpec->header.size);
5072
5073            LOAD_TABLE_NOISY(printf("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5074                                    (void*)(base-(const uint8_t*)chunk),
5075                                    dtohs(typeSpec->header.type),
5076                                    dtohs(typeSpec->header.headerSize),
5077                                    (void*)typeSize));
5078            // look for block overrun or int overflow when multiplying by 4
5079            if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
5080                    || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*dtohl(typeSpec->entryCount))
5081                    > typeSpecSize)) {
5082                ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
5083                     (void*)(dtohs(typeSpec->header.headerSize)
5084                             +(sizeof(uint32_t)*dtohl(typeSpec->entryCount))),
5085                     (void*)typeSpecSize);
5086                return (mError=BAD_TYPE);
5087            }
5088
5089            if (typeSpec->id == 0) {
5090                ALOGW("ResTable_type has an id of 0.");
5091                return (mError=BAD_TYPE);
5092            }
5093
5094            while (package->types.size() < typeSpec->id) {
5095                package->types.add(NULL);
5096            }
5097            Type* t = package->types[typeSpec->id-1];
5098            if (t == NULL) {
5099                t = new Type(header, package, dtohl(typeSpec->entryCount));
5100                package->types.editItemAt(typeSpec->id-1) = t;
5101            } else if (dtohl(typeSpec->entryCount) != t->entryCount) {
5102                ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
5103                    (int)dtohl(typeSpec->entryCount), (int)t->entryCount);
5104                return (mError=BAD_TYPE);
5105            }
5106            t->typeSpecFlags = (const uint32_t*)(
5107                    ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
5108            t->typeSpec = typeSpec;
5109
5110        } else if (ctype == RES_TABLE_TYPE_TYPE) {
5111            const ResTable_type* type = (const ResTable_type*)(chunk);
5112            err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
5113                                 endPos, "ResTable_type");
5114            if (err != NO_ERROR) {
5115                return (mError=err);
5116            }
5117
5118            const size_t typeSize = dtohl(type->header.size);
5119
5120            LOAD_TABLE_NOISY(printf("Type off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5121                                    (void*)(base-(const uint8_t*)chunk),
5122                                    dtohs(type->header.type),
5123                                    dtohs(type->header.headerSize),
5124                                    (void*)typeSize));
5125            if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*dtohl(type->entryCount))
5126                > typeSize) {
5127                ALOGW("ResTable_type entry index to %p extends beyond chunk end %p.",
5128                     (void*)(dtohs(type->header.headerSize)
5129                             +(sizeof(uint32_t)*dtohl(type->entryCount))),
5130                     (void*)typeSize);
5131                return (mError=BAD_TYPE);
5132            }
5133            if (dtohl(type->entryCount) != 0
5134                && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
5135                ALOGW("ResTable_type entriesStart at %p extends beyond chunk end %p.",
5136                     (void*)dtohl(type->entriesStart), (void*)typeSize);
5137                return (mError=BAD_TYPE);
5138            }
5139            if (type->id == 0) {
5140                ALOGW("ResTable_type has an id of 0.");
5141                return (mError=BAD_TYPE);
5142            }
5143
5144            while (package->types.size() < type->id) {
5145                package->types.add(NULL);
5146            }
5147            Type* t = package->types[type->id-1];
5148            if (t == NULL) {
5149                t = new Type(header, package, dtohl(type->entryCount));
5150                package->types.editItemAt(type->id-1) = t;
5151            } else if (dtohl(type->entryCount) != t->entryCount) {
5152                ALOGW("ResTable_type entry count inconsistent: given %d, previously %d",
5153                    (int)dtohl(type->entryCount), (int)t->entryCount);
5154                return (mError=BAD_TYPE);
5155            }
5156
5157            TABLE_GETENTRY(
5158                ResTable_config thisConfig;
5159                thisConfig.copyFromDtoH(type->config);
5160                ALOGI("Adding config to type %d: %s\n",
5161                      type->id, thisConfig.toString().string()));
5162            t->configs.add(type);
5163        } else {
5164            status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
5165                                          endPos, "ResTable_package:unknown");
5166            if (err != NO_ERROR) {
5167                return (mError=err);
5168            }
5169        }
5170        chunk = (const ResChunk_header*)
5171            (((const uint8_t*)chunk) + csize);
5172    }
5173
5174    if (group->typeCount == 0) {
5175        group->typeCount = package->types.size();
5176    }
5177
5178    return NO_ERROR;
5179}
5180
5181status_t ResTable::createIdmap(const ResTable& overlay, uint32_t originalCrc, uint32_t overlayCrc,
5182                               void** outData, size_t* outSize) const
5183{
5184    // see README for details on the format of map
5185    if (mPackageGroups.size() == 0) {
5186        return UNKNOWN_ERROR;
5187    }
5188    if (mPackageGroups[0]->packages.size() == 0) {
5189        return UNKNOWN_ERROR;
5190    }
5191
5192    Vector<Vector<uint32_t> > map;
5193    const PackageGroup* pg = mPackageGroups[0];
5194    const Package* pkg = pg->packages[0];
5195    size_t typeCount = pkg->types.size();
5196    // starting size is header + first item (number of types in map)
5197    *outSize = (IDMAP_HEADER_SIZE + 1) * sizeof(uint32_t);
5198    const String16 overlayPackage(overlay.mPackageGroups[0]->packages[0]->package->name);
5199    const uint32_t pkg_id = pkg->package->id << 24;
5200
5201    for (size_t typeIndex = 0; typeIndex < typeCount; ++typeIndex) {
5202        ssize_t first = -1;
5203        ssize_t last = -1;
5204        const Type* typeConfigs = pkg->getType(typeIndex);
5205        ssize_t mapIndex = map.add();
5206        if (mapIndex < 0) {
5207            return NO_MEMORY;
5208        }
5209        Vector<uint32_t>& vector = map.editItemAt(mapIndex);
5210        for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
5211            uint32_t resID = pkg_id
5212                | (0x00ff0000 & ((typeIndex+1)<<16))
5213                | (0x0000ffff & (entryIndex));
5214            resource_name resName;
5215            if (!this->getResourceName(resID, &resName)) {
5216                ALOGW("idmap: resource 0x%08x has spec but lacks values, skipping\n", resID);
5217                // add dummy value, or trimming leading/trailing zeroes later will fail
5218                vector.push(0);
5219                continue;
5220            }
5221
5222            const String16 overlayType(resName.type, resName.typeLen);
5223            const String16 overlayName(resName.name, resName.nameLen);
5224            uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
5225                                                              overlayName.size(),
5226                                                              overlayType.string(),
5227                                                              overlayType.size(),
5228                                                              overlayPackage.string(),
5229                                                              overlayPackage.size());
5230            if (overlayResID != 0) {
5231                overlayResID = pkg_id | (0x00ffffff & overlayResID);
5232                last = Res_GETENTRY(resID);
5233                if (first == -1) {
5234                    first = Res_GETENTRY(resID);
5235                }
5236            }
5237            vector.push(overlayResID);
5238#if 0
5239            if (overlayResID != 0) {
5240                ALOGD("%s/%s 0x%08x -> 0x%08x\n",
5241                     String8(String16(resName.type)).string(),
5242                     String8(String16(resName.name)).string(),
5243                     resID, overlayResID);
5244            }
5245#endif
5246        }
5247
5248        if (first != -1) {
5249            // shave off trailing entries which lack overlay values
5250            const size_t last_past_one = last + 1;
5251            if (last_past_one < vector.size()) {
5252                vector.removeItemsAt(last_past_one, vector.size() - last_past_one);
5253            }
5254            // shave off leading entries which lack overlay values
5255            vector.removeItemsAt(0, first);
5256            // store offset to first overlaid resource ID of this type
5257            vector.insertAt((uint32_t)first, 0, 1);
5258            // reserve space for number and offset of entries, and the actual entries
5259            *outSize += (2 + vector.size()) * sizeof(uint32_t);
5260        } else {
5261            // no entries of current type defined in overlay package
5262            vector.clear();
5263            // reserve space for type offset
5264            *outSize += 1 * sizeof(uint32_t);
5265        }
5266    }
5267
5268    if ((*outData = malloc(*outSize)) == NULL) {
5269        return NO_MEMORY;
5270    }
5271    uint32_t* data = (uint32_t*)*outData;
5272    *data++ = htodl(IDMAP_MAGIC);
5273    *data++ = htodl(originalCrc);
5274    *data++ = htodl(overlayCrc);
5275    const size_t mapSize = map.size();
5276    *data++ = htodl(mapSize);
5277    size_t offset = mapSize;
5278    for (size_t i = 0; i < mapSize; ++i) {
5279        const Vector<uint32_t>& vector = map.itemAt(i);
5280        const size_t N = vector.size();
5281        if (N == 0) {
5282            *data++ = htodl(0);
5283        } else {
5284            offset++;
5285            *data++ = htodl(offset);
5286            offset += N;
5287        }
5288    }
5289    for (size_t i = 0; i < mapSize; ++i) {
5290        const Vector<uint32_t>& vector = map.itemAt(i);
5291        const size_t N = vector.size();
5292        if (N == 0) {
5293            continue;
5294        }
5295        if (N == 1) { // vector expected to hold (offset) + (N > 0 entries)
5296            ALOGW("idmap: type %d supposedly has entries, but no entries found\n", i);
5297            return UNKNOWN_ERROR;
5298        }
5299        *data++ = htodl(N - 1); // do not count the offset (which is vector's first element)
5300        for (size_t j = 0; j < N; ++j) {
5301            const uint32_t& overlayResID = vector.itemAt(j);
5302            *data++ = htodl(overlayResID);
5303        }
5304    }
5305
5306    return NO_ERROR;
5307}
5308
5309bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
5310                            uint32_t* pOriginalCrc, uint32_t* pOverlayCrc)
5311{
5312    const uint32_t* map = (const uint32_t*)idmap;
5313    if (!assertIdmapHeader(map, sizeBytes)) {
5314        return false;
5315    }
5316    *pOriginalCrc = map[1];
5317    *pOverlayCrc = map[2];
5318    return true;
5319}
5320
5321
5322#ifndef HAVE_ANDROID_OS
5323#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
5324
5325#define CHAR16_ARRAY_EQ(constant, var, len) \
5326        ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
5327
5328void print_complex(uint32_t complex, bool isFraction)
5329{
5330    const float MANTISSA_MULT =
5331        1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
5332    const float RADIX_MULTS[] = {
5333        1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
5334        1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
5335    };
5336
5337    float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
5338                   <<Res_value::COMPLEX_MANTISSA_SHIFT))
5339            * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
5340                            & Res_value::COMPLEX_RADIX_MASK];
5341    printf("%f", value);
5342
5343    if (!isFraction) {
5344        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
5345            case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
5346            case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
5347            case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
5348            case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
5349            case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
5350            case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
5351            default: printf(" (unknown unit)"); break;
5352        }
5353    } else {
5354        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
5355            case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
5356            case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
5357            default: printf(" (unknown unit)"); break;
5358        }
5359    }
5360}
5361
5362// Normalize a string for output
5363String8 ResTable::normalizeForOutput( const char *input )
5364{
5365    String8 ret;
5366    char buff[2];
5367    buff[1] = '\0';
5368
5369    while (*input != '\0') {
5370        switch (*input) {
5371            // All interesting characters are in the ASCII zone, so we are making our own lives
5372            // easier by scanning the string one byte at a time.
5373        case '\\':
5374            ret += "\\\\";
5375            break;
5376        case '\n':
5377            ret += "\\n";
5378            break;
5379        case '"':
5380            ret += "\\\"";
5381            break;
5382        default:
5383            buff[0] = *input;
5384            ret += buff;
5385            break;
5386        }
5387
5388        input++;
5389    }
5390
5391    return ret;
5392}
5393
5394void ResTable::print_value(const Package* pkg, const Res_value& value) const
5395{
5396    if (value.dataType == Res_value::TYPE_NULL) {
5397        printf("(null)\n");
5398    } else if (value.dataType == Res_value::TYPE_REFERENCE) {
5399        printf("(reference) 0x%08x\n", value.data);
5400    } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
5401        printf("(attribute) 0x%08x\n", value.data);
5402    } else if (value.dataType == Res_value::TYPE_STRING) {
5403        size_t len;
5404        const char* str8 = pkg->header->values.string8At(
5405                value.data, &len);
5406        if (str8 != NULL) {
5407            printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
5408        } else {
5409            const char16_t* str16 = pkg->header->values.stringAt(
5410                    value.data, &len);
5411            if (str16 != NULL) {
5412                printf("(string16) \"%s\"\n",
5413                    normalizeForOutput(String8(str16, len).string()).string());
5414            } else {
5415                printf("(string) null\n");
5416            }
5417        }
5418    } else if (value.dataType == Res_value::TYPE_FLOAT) {
5419        printf("(float) %g\n", *(const float*)&value.data);
5420    } else if (value.dataType == Res_value::TYPE_DIMENSION) {
5421        printf("(dimension) ");
5422        print_complex(value.data, false);
5423        printf("\n");
5424    } else if (value.dataType == Res_value::TYPE_FRACTION) {
5425        printf("(fraction) ");
5426        print_complex(value.data, true);
5427        printf("\n");
5428    } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
5429            || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
5430        printf("(color) #%08x\n", value.data);
5431    } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
5432        printf("(boolean) %s\n", value.data ? "true" : "false");
5433    } else if (value.dataType >= Res_value::TYPE_FIRST_INT
5434            || value.dataType <= Res_value::TYPE_LAST_INT) {
5435        printf("(int) 0x%08x or %d\n", value.data, value.data);
5436    } else {
5437        printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
5438               (int)value.dataType, (int)value.data,
5439               (int)value.size, (int)value.res0);
5440    }
5441}
5442
5443void ResTable::print(bool inclValues) const
5444{
5445    if (mError != 0) {
5446        printf("mError=0x%x (%s)\n", mError, strerror(mError));
5447    }
5448#if 0
5449    printf("mParams=%c%c-%c%c,\n",
5450            mParams.language[0], mParams.language[1],
5451            mParams.country[0], mParams.country[1]);
5452#endif
5453    size_t pgCount = mPackageGroups.size();
5454    printf("Package Groups (%d)\n", (int)pgCount);
5455    for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
5456        const PackageGroup* pg = mPackageGroups[pgIndex];
5457        printf("Package Group %d id=%d packageCount=%d name=%s\n",
5458                (int)pgIndex, pg->id, (int)pg->packages.size(),
5459                String8(pg->name).string());
5460
5461        size_t pkgCount = pg->packages.size();
5462        for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
5463            const Package* pkg = pg->packages[pkgIndex];
5464            size_t typeCount = pkg->types.size();
5465            printf("  Package %d id=%d name=%s typeCount=%d\n", (int)pkgIndex,
5466                    pkg->package->id, String8(String16(pkg->package->name)).string(),
5467                    (int)typeCount);
5468            for (size_t typeIndex=0; typeIndex<typeCount; typeIndex++) {
5469                const Type* typeConfigs = pkg->getType(typeIndex);
5470                if (typeConfigs == NULL) {
5471                    printf("    type %d NULL\n", (int)typeIndex);
5472                    continue;
5473                }
5474                const size_t NTC = typeConfigs->configs.size();
5475                printf("    type %d configCount=%d entryCount=%d\n",
5476                       (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
5477                if (typeConfigs->typeSpecFlags != NULL) {
5478                    for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
5479                        uint32_t resID = (0xff000000 & ((pkg->package->id)<<24))
5480                                    | (0x00ff0000 & ((typeIndex+1)<<16))
5481                                    | (0x0000ffff & (entryIndex));
5482                        resource_name resName;
5483                        if (this->getResourceName(resID, &resName)) {
5484                            printf("      spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
5485                                resID,
5486                                CHAR16_TO_CSTR(resName.package, resName.packageLen),
5487                                CHAR16_TO_CSTR(resName.type, resName.typeLen),
5488                                CHAR16_TO_CSTR(resName.name, resName.nameLen),
5489                                dtohl(typeConfigs->typeSpecFlags[entryIndex]));
5490                        } else {
5491                            printf("      INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
5492                        }
5493                    }
5494                }
5495                for (size_t configIndex=0; configIndex<NTC; configIndex++) {
5496                    const ResTable_type* type = typeConfigs->configs[configIndex];
5497                    if ((((uint64_t)type)&0x3) != 0) {
5498                        printf("      NON-INTEGER ResTable_type ADDRESS: %p\n", type);
5499                        continue;
5500                    }
5501                    String8 configStr = type->config.toString();
5502                    printf("      config %s:\n", configStr.size() > 0
5503                            ? configStr.string() : "(default)");
5504                    size_t entryCount = dtohl(type->entryCount);
5505                    uint32_t entriesStart = dtohl(type->entriesStart);
5506                    if ((entriesStart&0x3) != 0) {
5507                        printf("      NON-INTEGER ResTable_type entriesStart OFFSET: %p\n", (void*)entriesStart);
5508                        continue;
5509                    }
5510                    uint32_t typeSize = dtohl(type->header.size);
5511                    if ((typeSize&0x3) != 0) {
5512                        printf("      NON-INTEGER ResTable_type header.size: %p\n", (void*)typeSize);
5513                        continue;
5514                    }
5515                    for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
5516
5517                        const uint8_t* const end = ((const uint8_t*)type)
5518                            + dtohl(type->header.size);
5519                        const uint32_t* const eindex = (const uint32_t*)
5520                            (((const uint8_t*)type) + dtohs(type->header.headerSize));
5521
5522                        uint32_t thisOffset = dtohl(eindex[entryIndex]);
5523                        if (thisOffset == ResTable_type::NO_ENTRY) {
5524                            continue;
5525                        }
5526
5527                        uint32_t resID = (0xff000000 & ((pkg->package->id)<<24))
5528                                    | (0x00ff0000 & ((typeIndex+1)<<16))
5529                                    | (0x0000ffff & (entryIndex));
5530                        resource_name resName;
5531                        if (this->getResourceName(resID, &resName)) {
5532                            printf("        resource 0x%08x %s:%s/%s: ", resID,
5533                                    CHAR16_TO_CSTR(resName.package, resName.packageLen),
5534                                    CHAR16_TO_CSTR(resName.type, resName.typeLen),
5535                                    CHAR16_TO_CSTR(resName.name, resName.nameLen));
5536                        } else {
5537                            printf("        INVALID RESOURCE 0x%08x: ", resID);
5538                        }
5539                        if ((thisOffset&0x3) != 0) {
5540                            printf("NON-INTEGER OFFSET: %p\n", (void*)thisOffset);
5541                            continue;
5542                        }
5543                        if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
5544                            printf("OFFSET OUT OF BOUNDS: %p+%p (size is %p)\n",
5545                                   (void*)entriesStart, (void*)thisOffset,
5546                                   (void*)typeSize);
5547                            continue;
5548                        }
5549
5550                        const ResTable_entry* ent = (const ResTable_entry*)
5551                            (((const uint8_t*)type) + entriesStart + thisOffset);
5552                        if (((entriesStart + thisOffset)&0x3) != 0) {
5553                            printf("NON-INTEGER ResTable_entry OFFSET: %p\n",
5554                                 (void*)(entriesStart + thisOffset));
5555                            continue;
5556                        }
5557
5558                        uint16_t esize = dtohs(ent->size);
5559                        if ((esize&0x3) != 0) {
5560                            printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void*)esize);
5561                            continue;
5562                        }
5563                        if ((thisOffset+esize) > typeSize) {
5564                            printf("ResTable_entry OUT OF BOUNDS: %p+%p+%p (size is %p)\n",
5565                                   (void*)entriesStart, (void*)thisOffset,
5566                                   (void*)esize, (void*)typeSize);
5567                            continue;
5568                        }
5569
5570                        const Res_value* valuePtr = NULL;
5571                        const ResTable_map_entry* bagPtr = NULL;
5572                        Res_value value;
5573                        if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
5574                            printf("<bag>");
5575                            bagPtr = (const ResTable_map_entry*)ent;
5576                        } else {
5577                            valuePtr = (const Res_value*)
5578                                (((const uint8_t*)ent) + esize);
5579                            value.copyFrom_dtoh(*valuePtr);
5580                            printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
5581                                   (int)value.dataType, (int)value.data,
5582                                   (int)value.size, (int)value.res0);
5583                        }
5584
5585                        if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
5586                            printf(" (PUBLIC)");
5587                        }
5588                        printf("\n");
5589
5590                        if (inclValues) {
5591                            if (valuePtr != NULL) {
5592                                printf("          ");
5593                                print_value(pkg, value);
5594                            } else if (bagPtr != NULL) {
5595                                const int N = dtohl(bagPtr->count);
5596                                const uint8_t* baseMapPtr = (const uint8_t*)ent;
5597                                size_t mapOffset = esize;
5598                                const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
5599                                printf("          Parent=0x%08x, Count=%d\n",
5600                                    dtohl(bagPtr->parent.ident), N);
5601                                for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
5602                                    printf("          #%i (Key=0x%08x): ",
5603                                        i, dtohl(mapPtr->name.ident));
5604                                    value.copyFrom_dtoh(mapPtr->value);
5605                                    print_value(pkg, value);
5606                                    const size_t size = dtohs(mapPtr->value.size);
5607                                    mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
5608                                    mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
5609                                }
5610                            }
5611                        }
5612                    }
5613                }
5614            }
5615        }
5616    }
5617}
5618
5619#endif // HAVE_ANDROID_OS
5620
5621}   // namespace android
5622