ResourceTypes.cpp revision 4bf58108d442b37ab4adf5ce3a4ecd63472ce254 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "ResourceType"
18//#define LOG_NDEBUG 0
19
20#include <androidfw/ByteBucketArray.h>
21#include <androidfw/ResourceTypes.h>
22#include <androidfw/TypeWrappers.h>
23#include <utils/Atomic.h>
24#include <utils/ByteOrder.h>
25#include <utils/Debug.h>
26#include <utils/Log.h>
27#include <utils/String16.h>
28#include <utils/String8.h>
29
30#include <stdlib.h>
31#include <string.h>
32#include <memory.h>
33#include <ctype.h>
34#include <stdint.h>
35#include <stddef.h>
36
37#ifndef INT32_MAX
38#define INT32_MAX ((int32_t)(2147483647))
39#endif
40
41#define STRING_POOL_NOISY(x) //x
42#define XML_NOISY(x) //x
43#define TABLE_NOISY(x) //x
44#define TABLE_GETENTRY(x) //x
45#define TABLE_SUPER_NOISY(x) //x
46#define LOAD_TABLE_NOISY(x) //x
47#define TABLE_THEME(x) //x
48#define LIB_NOISY(x) //x
49
50namespace android {
51
52#ifdef HAVE_WINSOCK
53#undef  nhtol
54#undef  htonl
55
56#ifdef HAVE_LITTLE_ENDIAN
57#define ntohl(x)    ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
58#define htonl(x)    ntohl(x)
59#define ntohs(x)    ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
60#define htons(x)    ntohs(x)
61#else
62#define ntohl(x)    (x)
63#define htonl(x)    (x)
64#define ntohs(x)    (x)
65#define htons(x)    (x)
66#endif
67#endif
68
69#define IDMAP_MAGIC             0x504D4449
70#define IDMAP_CURRENT_VERSION   0x00000001
71
72#define APP_PACKAGE_ID      0x7f
73#define SYS_PACKAGE_ID      0x01
74
75// Standard C isspace() is only required to look at the low byte of its input, so
76// produces incorrect results for UTF-16 characters.  For safety's sake, assume that
77// any high-byte UTF-16 code point is not whitespace.
78inline int isspace16(char16_t c) {
79    return (c < 0x0080 && isspace(c));
80}
81
82template<typename T>
83inline static T max(T a, T b) {
84    return a > b ? a : b;
85}
86
87// range checked; guaranteed to NUL-terminate within the stated number of available slots
88// NOTE: if this truncates the dst string due to running out of space, no attempt is
89// made to avoid splitting surrogate pairs.
90static void strcpy16_dtoh(char16_t* dst, const uint16_t* src, size_t avail)
91{
92    char16_t* last = dst + avail - 1;
93    while (*src && (dst < last)) {
94        char16_t s = dtohs(static_cast<char16_t>(*src));
95        *dst++ = s;
96        src++;
97    }
98    *dst = 0;
99}
100
101static status_t validate_chunk(const ResChunk_header* chunk,
102                               size_t minSize,
103                               const uint8_t* dataEnd,
104                               const char* name)
105{
106    const uint16_t headerSize = dtohs(chunk->headerSize);
107    const uint32_t size = dtohl(chunk->size);
108
109    if (headerSize >= minSize) {
110        if (headerSize <= size) {
111            if (((headerSize|size)&0x3) == 0) {
112                if ((size_t)size <= (size_t)(dataEnd-((const uint8_t*)chunk))) {
113                    return NO_ERROR;
114                }
115                ALOGW("%s data size 0x%x extends beyond resource end %p.",
116                     name, size, (void*)(dataEnd-((const uint8_t*)chunk)));
117                return BAD_TYPE;
118            }
119            ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
120                 name, (int)size, (int)headerSize);
121            return BAD_TYPE;
122        }
123        ALOGW("%s size 0x%x is smaller than header size 0x%x.",
124             name, size, headerSize);
125        return BAD_TYPE;
126    }
127    ALOGW("%s header size 0x%04x is too small.",
128         name, headerSize);
129    return BAD_TYPE;
130}
131
132static void fill9patchOffsets(Res_png_9patch* patch) {
133    patch->xDivsOffset = sizeof(Res_png_9patch);
134    patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
135    patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
136}
137
138inline void Res_value::copyFrom_dtoh(const Res_value& src)
139{
140    size = dtohs(src.size);
141    res0 = src.res0;
142    dataType = src.dataType;
143    data = dtohl(src.data);
144}
145
146void Res_png_9patch::deviceToFile()
147{
148    int32_t* xDivs = getXDivs();
149    for (int i = 0; i < numXDivs; i++) {
150        xDivs[i] = htonl(xDivs[i]);
151    }
152    int32_t* yDivs = getYDivs();
153    for (int i = 0; i < numYDivs; i++) {
154        yDivs[i] = htonl(yDivs[i]);
155    }
156    paddingLeft = htonl(paddingLeft);
157    paddingRight = htonl(paddingRight);
158    paddingTop = htonl(paddingTop);
159    paddingBottom = htonl(paddingBottom);
160    uint32_t* colors = getColors();
161    for (int i=0; i<numColors; i++) {
162        colors[i] = htonl(colors[i]);
163    }
164}
165
166void Res_png_9patch::fileToDevice()
167{
168    int32_t* xDivs = getXDivs();
169    for (int i = 0; i < numXDivs; i++) {
170        xDivs[i] = ntohl(xDivs[i]);
171    }
172    int32_t* yDivs = getYDivs();
173    for (int i = 0; i < numYDivs; i++) {
174        yDivs[i] = ntohl(yDivs[i]);
175    }
176    paddingLeft = ntohl(paddingLeft);
177    paddingRight = ntohl(paddingRight);
178    paddingTop = ntohl(paddingTop);
179    paddingBottom = ntohl(paddingBottom);
180    uint32_t* colors = getColors();
181    for (int i=0; i<numColors; i++) {
182        colors[i] = ntohl(colors[i]);
183    }
184}
185
186size_t Res_png_9patch::serializedSize() const
187{
188    // The size of this struct is 32 bytes on the 32-bit target system
189    // 4 * int8_t
190    // 4 * int32_t
191    // 3 * uint32_t
192    return 32
193            + numXDivs * sizeof(int32_t)
194            + numYDivs * sizeof(int32_t)
195            + numColors * sizeof(uint32_t);
196}
197
198void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
199                                const int32_t* yDivs, const uint32_t* colors)
200{
201    // Use calloc since we're going to leave a few holes in the data
202    // and want this to run cleanly under valgrind
203    void* newData = calloc(1, patch.serializedSize());
204    serialize(patch, xDivs, yDivs, colors, newData);
205    return newData;
206}
207
208void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
209                               const int32_t* yDivs, const uint32_t* colors, void* outData)
210{
211    uint8_t* data = (uint8_t*) outData;
212    memcpy(data, &patch.wasDeserialized, 4);     // copy  wasDeserialized, numXDivs, numYDivs, numColors
213    memcpy(data + 12, &patch.paddingLeft, 16);   // copy paddingXXXX
214    data += 32;
215
216    memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
217    data +=  patch.numXDivs * sizeof(int32_t);
218    memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
219    data +=  patch.numYDivs * sizeof(int32_t);
220    memcpy(data, colors, patch.numColors * sizeof(uint32_t));
221
222    fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
223}
224
225static bool assertIdmapHeader(const void* idmap, size_t size) {
226    if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
227        ALOGE("idmap: header is not word aligned");
228        return false;
229    }
230
231    if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
232        ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
233        return false;
234    }
235
236    const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
237    if (magic != IDMAP_MAGIC) {
238        ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
239             magic, IDMAP_MAGIC);
240        return false;
241    }
242
243    const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
244    if (version != IDMAP_CURRENT_VERSION) {
245        // We are strict about versions because files with this format are
246        // auto-generated and don't need backwards compatibility.
247        ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
248                version, IDMAP_CURRENT_VERSION);
249        return false;
250    }
251    return true;
252}
253
254class IdmapEntries {
255public:
256    IdmapEntries() : mData(NULL) {}
257
258    bool hasEntries() const {
259        if (mData == NULL) {
260            return false;
261        }
262
263        return (dtohs(*mData) > 0);
264    }
265
266    size_t byteSize() const {
267        if (mData == NULL) {
268            return 0;
269        }
270        uint16_t entryCount = dtohs(mData[2]);
271        return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
272    }
273
274    uint8_t targetTypeId() const {
275        if (mData == NULL) {
276            return 0;
277        }
278        return dtohs(mData[0]);
279    }
280
281    uint8_t overlayTypeId() const {
282        if (mData == NULL) {
283            return 0;
284        }
285        return dtohs(mData[1]);
286    }
287
288    status_t setTo(const void* entryHeader, size_t size) {
289        if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
290            ALOGE("idmap: entry header is not word aligned");
291            return UNKNOWN_ERROR;
292        }
293
294        if (size < sizeof(uint16_t) * 4) {
295            ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
296            return UNKNOWN_ERROR;
297        }
298
299        const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
300        const uint16_t targetTypeId = dtohs(header[0]);
301        const uint16_t overlayTypeId = dtohs(header[1]);
302        if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
303            ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
304            return UNKNOWN_ERROR;
305        }
306
307        uint16_t entryCount = dtohs(header[2]);
308        if (size < sizeof(uint32_t) * (entryCount + 2)) {
309            ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
310                    (uint32_t) size, (uint32_t) entryCount);
311            return UNKNOWN_ERROR;
312        }
313        mData = header;
314        return NO_ERROR;
315    }
316
317    status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
318        uint16_t entryCount = dtohs(mData[2]);
319        uint16_t offset = dtohs(mData[3]);
320
321        if (entryId < offset) {
322            // The entry is not present in this idmap
323            return BAD_INDEX;
324        }
325
326        entryId -= offset;
327
328        if (entryId >= entryCount) {
329            // The entry is not present in this idmap
330            return BAD_INDEX;
331        }
332
333        // It is safe to access the type here without checking the size because
334        // we have checked this when it was first loaded.
335        const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
336        uint32_t mappedEntry = dtohl(entries[entryId]);
337        if (mappedEntry == 0xffffffff) {
338            // This entry is not present in this idmap
339            return BAD_INDEX;
340        }
341        *outEntryId = static_cast<uint16_t>(mappedEntry);
342        return NO_ERROR;
343    }
344
345private:
346    const uint16_t* mData;
347};
348
349status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
350    if (!assertIdmapHeader(idmap, size)) {
351        return UNKNOWN_ERROR;
352    }
353
354    size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
355    if (size < sizeof(uint16_t) * 2) {
356        ALOGE("idmap: too small to contain any mapping");
357        return UNKNOWN_ERROR;
358    }
359
360    const uint16_t* data = reinterpret_cast<const uint16_t*>(
361            reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
362
363    uint16_t targetPackageId = dtohs(*(data++));
364    if (targetPackageId == 0 || targetPackageId > 255) {
365        ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
366        return UNKNOWN_ERROR;
367    }
368
369    uint16_t mapCount = dtohs(*(data++));
370    if (mapCount == 0) {
371        ALOGE("idmap: no mappings");
372        return UNKNOWN_ERROR;
373    }
374
375    if (mapCount > 255) {
376        ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
377    }
378
379    while (size > sizeof(uint16_t) * 4) {
380        IdmapEntries entries;
381        status_t err = entries.setTo(data, size);
382        if (err != NO_ERROR) {
383            return err;
384        }
385
386        ssize_t index = outMap->add(entries.overlayTypeId(), entries);
387        if (index < 0) {
388            return NO_MEMORY;
389        }
390
391        data += entries.byteSize() / sizeof(uint16_t);
392        size -= entries.byteSize();
393    }
394
395    if (outPackageId != NULL) {
396        *outPackageId = static_cast<uint8_t>(targetPackageId);
397    }
398    return NO_ERROR;
399}
400
401Res_png_9patch* Res_png_9patch::deserialize(void* inData)
402{
403
404    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
405    patch->wasDeserialized = true;
406    fill9patchOffsets(patch);
407
408    return patch;
409}
410
411// --------------------------------------------------------------------
412// --------------------------------------------------------------------
413// --------------------------------------------------------------------
414
415ResStringPool::ResStringPool()
416    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
417{
418}
419
420ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
421    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
422{
423    setTo(data, size, copyData);
424}
425
426ResStringPool::~ResStringPool()
427{
428    uninit();
429}
430
431void ResStringPool::setToEmpty()
432{
433    uninit();
434
435    mOwnedData = calloc(1, sizeof(ResStringPool_header));
436    ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
437    mSize = 0;
438    mEntries = NULL;
439    mStrings = NULL;
440    mStringPoolSize = 0;
441    mEntryStyles = NULL;
442    mStyles = NULL;
443    mStylePoolSize = 0;
444    mHeader = (const ResStringPool_header*) header;
445}
446
447status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
448{
449    if (!data || !size) {
450        return (mError=BAD_TYPE);
451    }
452
453    uninit();
454
455    const bool notDeviceEndian = htods(0xf0) != 0xf0;
456
457    if (copyData || notDeviceEndian) {
458        mOwnedData = malloc(size);
459        if (mOwnedData == NULL) {
460            return (mError=NO_MEMORY);
461        }
462        memcpy(mOwnedData, data, size);
463        data = mOwnedData;
464    }
465
466    mHeader = (const ResStringPool_header*)data;
467
468    if (notDeviceEndian) {
469        ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
470        h->header.headerSize = dtohs(mHeader->header.headerSize);
471        h->header.type = dtohs(mHeader->header.type);
472        h->header.size = dtohl(mHeader->header.size);
473        h->stringCount = dtohl(mHeader->stringCount);
474        h->styleCount = dtohl(mHeader->styleCount);
475        h->flags = dtohl(mHeader->flags);
476        h->stringsStart = dtohl(mHeader->stringsStart);
477        h->stylesStart = dtohl(mHeader->stylesStart);
478    }
479
480    if (mHeader->header.headerSize > mHeader->header.size
481            || mHeader->header.size > size) {
482        ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
483                (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
484        return (mError=BAD_TYPE);
485    }
486    mSize = mHeader->header.size;
487    mEntries = (const uint32_t*)
488        (((const uint8_t*)data)+mHeader->header.headerSize);
489
490    if (mHeader->stringCount > 0) {
491        if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount)  // uint32 overflow?
492            || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
493                > size) {
494            ALOGW("Bad string block: entry of %d items extends past data size %d\n",
495                    (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
496                    (int)size);
497            return (mError=BAD_TYPE);
498        }
499
500        size_t charSize;
501        if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
502            charSize = sizeof(uint8_t);
503        } else {
504            charSize = sizeof(uint16_t);
505        }
506
507        // There should be at least space for the smallest string
508        // (2 bytes length, null terminator).
509        if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
510            ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
511                    (int)mHeader->stringsStart, (int)mHeader->header.size);
512            return (mError=BAD_TYPE);
513        }
514
515        mStrings = (const void*)
516            (((const uint8_t*)data) + mHeader->stringsStart);
517
518        if (mHeader->styleCount == 0) {
519            mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
520        } else {
521            // check invariant: styles starts before end of data
522            if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
523                ALOGW("Bad style block: style block starts at %d past data size of %d\n",
524                    (int)mHeader->stylesStart, (int)mHeader->header.size);
525                return (mError=BAD_TYPE);
526            }
527            // check invariant: styles follow the strings
528            if (mHeader->stylesStart <= mHeader->stringsStart) {
529                ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
530                    (int)mHeader->stylesStart, (int)mHeader->stringsStart);
531                return (mError=BAD_TYPE);
532            }
533            mStringPoolSize =
534                (mHeader->stylesStart-mHeader->stringsStart)/charSize;
535        }
536
537        // check invariant: stringCount > 0 requires a string pool to exist
538        if (mStringPoolSize == 0) {
539            ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
540            return (mError=BAD_TYPE);
541        }
542
543        if (notDeviceEndian) {
544            size_t i;
545            uint32_t* e = const_cast<uint32_t*>(mEntries);
546            for (i=0; i<mHeader->stringCount; i++) {
547                e[i] = dtohl(mEntries[i]);
548            }
549            if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
550                const uint16_t* strings = (const uint16_t*)mStrings;
551                uint16_t* s = const_cast<uint16_t*>(strings);
552                for (i=0; i<mStringPoolSize; i++) {
553                    s[i] = dtohs(strings[i]);
554                }
555            }
556        }
557
558        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
559                ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
560                (!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
561                ((uint16_t*)mStrings)[mStringPoolSize-1] != 0)) {
562            ALOGW("Bad string block: last string is not 0-terminated\n");
563            return (mError=BAD_TYPE);
564        }
565    } else {
566        mStrings = NULL;
567        mStringPoolSize = 0;
568    }
569
570    if (mHeader->styleCount > 0) {
571        mEntryStyles = mEntries + mHeader->stringCount;
572        // invariant: integer overflow in calculating mEntryStyles
573        if (mEntryStyles < mEntries) {
574            ALOGW("Bad string block: integer overflow finding styles\n");
575            return (mError=BAD_TYPE);
576        }
577
578        if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
579            ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
580                    (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
581                    (int)size);
582            return (mError=BAD_TYPE);
583        }
584        mStyles = (const uint32_t*)
585            (((const uint8_t*)data)+mHeader->stylesStart);
586        if (mHeader->stylesStart >= mHeader->header.size) {
587            ALOGW("Bad string block: style pool starts %d, after total size %d\n",
588                    (int)mHeader->stylesStart, (int)mHeader->header.size);
589            return (mError=BAD_TYPE);
590        }
591        mStylePoolSize =
592            (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
593
594        if (notDeviceEndian) {
595            size_t i;
596            uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
597            for (i=0; i<mHeader->styleCount; i++) {
598                e[i] = dtohl(mEntryStyles[i]);
599            }
600            uint32_t* s = const_cast<uint32_t*>(mStyles);
601            for (i=0; i<mStylePoolSize; i++) {
602                s[i] = dtohl(mStyles[i]);
603            }
604        }
605
606        const ResStringPool_span endSpan = {
607            { htodl(ResStringPool_span::END) },
608            htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
609        };
610        if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
611                   &endSpan, sizeof(endSpan)) != 0) {
612            ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
613            return (mError=BAD_TYPE);
614        }
615    } else {
616        mEntryStyles = NULL;
617        mStyles = NULL;
618        mStylePoolSize = 0;
619    }
620
621    return (mError=NO_ERROR);
622}
623
624status_t ResStringPool::getError() const
625{
626    return mError;
627}
628
629void ResStringPool::uninit()
630{
631    mError = NO_INIT;
632    if (mHeader != NULL && mCache != NULL) {
633        for (size_t x = 0; x < mHeader->stringCount; x++) {
634            if (mCache[x] != NULL) {
635                free(mCache[x]);
636                mCache[x] = NULL;
637            }
638        }
639        free(mCache);
640        mCache = NULL;
641    }
642    if (mOwnedData) {
643        free(mOwnedData);
644        mOwnedData = NULL;
645    }
646}
647
648/**
649 * Strings in UTF-16 format have length indicated by a length encoded in the
650 * stored data. It is either 1 or 2 characters of length data. This allows a
651 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
652 * much data in a string, you're abusing them.
653 *
654 * If the high bit is set, then there are two characters or 4 bytes of length
655 * data encoded. In that case, drop the high bit of the first character and
656 * add it together with the next character.
657 */
658static inline size_t
659decodeLength(const uint16_t** str)
660{
661    size_t len = **str;
662    if ((len & 0x8000) != 0) {
663        (*str)++;
664        len = ((len & 0x7FFF) << 16) | **str;
665    }
666    (*str)++;
667    return len;
668}
669
670/**
671 * Strings in UTF-8 format have length indicated by a length encoded in the
672 * stored data. It is either 1 or 2 characters of length data. This allows a
673 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
674 * text in another way if you're using that much data in a single string.
675 *
676 * If the high bit is set, then there are two characters or 2 bytes of length
677 * data encoded. In that case, drop the high bit of the first character and
678 * add it together with the next character.
679 */
680static inline size_t
681decodeLength(const uint8_t** str)
682{
683    size_t len = **str;
684    if ((len & 0x80) != 0) {
685        (*str)++;
686        len = ((len & 0x7F) << 8) | **str;
687    }
688    (*str)++;
689    return len;
690}
691
692const char16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
693{
694    if (mError == NO_ERROR && idx < mHeader->stringCount) {
695        const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
696        const uint32_t off = mEntries[idx]/(isUTF8?sizeof(uint8_t):sizeof(uint16_t));
697        if (off < (mStringPoolSize-1)) {
698            if (!isUTF8) {
699                const uint16_t* strings = (uint16_t*)mStrings;
700                const uint16_t* str = strings+off;
701
702                *u16len = decodeLength(&str);
703                if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
704                    return reinterpret_cast<const char16_t*>(str);
705                } else {
706                    ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
707                            (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
708                }
709            } else {
710                const uint8_t* strings = (uint8_t*)mStrings;
711                const uint8_t* u8str = strings+off;
712
713                *u16len = decodeLength(&u8str);
714                size_t u8len = decodeLength(&u8str);
715
716                // encLen must be less than 0x7FFF due to encoding.
717                if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
718                    AutoMutex lock(mDecodeLock);
719
720                    if (mCache == NULL) {
721#ifndef HAVE_ANDROID_OS
722                        STRING_POOL_NOISY(ALOGI("CREATING STRING CACHE OF %d bytes",
723                                mHeader->stringCount*sizeof(char16_t**)));
724#else
725                        // We do not want to be in this case when actually running Android.
726                        ALOGW("CREATING STRING CACHE OF %d bytes",
727                                mHeader->stringCount*sizeof(char16_t**));
728#endif
729                        mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
730                        if (mCache == NULL) {
731                            ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
732                                    (int)(mHeader->stringCount*sizeof(char16_t**)));
733                            return NULL;
734                        }
735                    }
736
737                    if (mCache[idx] != NULL) {
738                        return mCache[idx];
739                    }
740
741                    ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
742                    if (actualLen < 0 || (size_t)actualLen != *u16len) {
743                        ALOGW("Bad string block: string #%lld decoded length is not correct "
744                                "%lld vs %llu\n",
745                                (long long)idx, (long long)actualLen, (long long)*u16len);
746                        return NULL;
747                    }
748
749                    char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
750                    if (!u16str) {
751                        ALOGW("No memory when trying to allocate decode cache for string #%d\n",
752                                (int)idx);
753                        return NULL;
754                    }
755
756                    STRING_POOL_NOISY(ALOGI("Caching UTF8 string: %s", u8str));
757                    utf8_to_utf16(u8str, u8len, u16str);
758                    mCache[idx] = u16str;
759                    return u16str;
760                } else {
761                    ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
762                            (long long)idx, (long long)(u8str+u8len-strings),
763                            (long long)mStringPoolSize);
764                }
765            }
766        } else {
767            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
768                    (int)idx, (int)(off*sizeof(uint16_t)),
769                    (int)(mStringPoolSize*sizeof(uint16_t)));
770        }
771    }
772    return NULL;
773}
774
775const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
776{
777    if (mError == NO_ERROR && idx < mHeader->stringCount) {
778        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
779            return NULL;
780        }
781        const uint32_t off = mEntries[idx]/sizeof(char);
782        if (off < (mStringPoolSize-1)) {
783            const uint8_t* strings = (uint8_t*)mStrings;
784            const uint8_t* str = strings+off;
785            *outLen = decodeLength(&str);
786            size_t encLen = decodeLength(&str);
787            if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
788                return (const char*)str;
789            } else {
790                ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
791                        (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
792            }
793        } else {
794            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
795                    (int)idx, (int)(off*sizeof(uint16_t)),
796                    (int)(mStringPoolSize*sizeof(uint16_t)));
797        }
798    }
799    return NULL;
800}
801
802const String8 ResStringPool::string8ObjectAt(size_t idx) const
803{
804    size_t len;
805    const char *str = string8At(idx, &len);
806    if (str != NULL) {
807        return String8(str, len);
808    }
809
810    const char16_t *str16 = stringAt(idx, &len);
811    if (str16 != NULL) {
812        return String8(str16, len);
813    }
814    return String8();
815}
816
817const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
818{
819    return styleAt(ref.index);
820}
821
822const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
823{
824    if (mError == NO_ERROR && idx < mHeader->styleCount) {
825        const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
826        if (off < mStylePoolSize) {
827            return (const ResStringPool_span*)(mStyles+off);
828        } else {
829            ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
830                    (int)idx, (int)(off*sizeof(uint32_t)),
831                    (int)(mStylePoolSize*sizeof(uint32_t)));
832        }
833    }
834    return NULL;
835}
836
837ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
838{
839    if (mError != NO_ERROR) {
840        return mError;
841    }
842
843    size_t len;
844
845    if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
846        STRING_POOL_NOISY(ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string()));
847
848        // The string pool contains UTF 8 strings; we don't want to cause
849        // temporary UTF-16 strings to be created as we search.
850        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
851            // Do a binary search for the string...  this is a little tricky,
852            // because the strings are sorted with strzcmp16().  So to match
853            // the ordering, we need to convert strings in the pool to UTF-16.
854            // But we don't want to hit the cache, so instead we will have a
855            // local temporary allocation for the conversions.
856            char16_t* convBuffer = (char16_t*)malloc(strLen+4);
857            ssize_t l = 0;
858            ssize_t h = mHeader->stringCount-1;
859
860            ssize_t mid;
861            while (l <= h) {
862                mid = l + (h - l)/2;
863                const uint8_t* s = (const uint8_t*)string8At(mid, &len);
864                int c;
865                if (s != NULL) {
866                    char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
867                    *end = 0;
868                    c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
869                } else {
870                    c = -1;
871                }
872                STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
873                             (const char*)s, c, (int)l, (int)mid, (int)h));
874                if (c == 0) {
875                    STRING_POOL_NOISY(ALOGI("MATCH!"));
876                    free(convBuffer);
877                    return mid;
878                } else if (c < 0) {
879                    l = mid + 1;
880                } else {
881                    h = mid - 1;
882                }
883            }
884            free(convBuffer);
885        } else {
886            // It is unusual to get the ID from an unsorted string block...
887            // most often this happens because we want to get IDs for style
888            // span tags; since those always appear at the end of the string
889            // block, start searching at the back.
890            String8 str8(str, strLen);
891            const size_t str8Len = str8.size();
892            for (int i=mHeader->stringCount-1; i>=0; i--) {
893                const char* s = string8At(i, &len);
894                STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
895                             String8(s).string(),
896                             i));
897                if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
898                    STRING_POOL_NOISY(ALOGI("MATCH!"));
899                    return i;
900                }
901            }
902        }
903
904    } else {
905        STRING_POOL_NOISY(ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string()));
906
907        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
908            // Do a binary search for the string...
909            ssize_t l = 0;
910            ssize_t h = mHeader->stringCount-1;
911
912            ssize_t mid;
913            while (l <= h) {
914                mid = l + (h - l)/2;
915                const char16_t* s = stringAt(mid, &len);
916                int c = s ? strzcmp16(s, len, str, strLen) : -1;
917                STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
918                             String8(s).string(),
919                             c, (int)l, (int)mid, (int)h));
920                if (c == 0) {
921                    STRING_POOL_NOISY(ALOGI("MATCH!"));
922                    return mid;
923                } else if (c < 0) {
924                    l = mid + 1;
925                } else {
926                    h = mid - 1;
927                }
928            }
929        } else {
930            // It is unusual to get the ID from an unsorted string block...
931            // most often this happens because we want to get IDs for style
932            // span tags; since those always appear at the end of the string
933            // block, start searching at the back.
934            for (int i=mHeader->stringCount-1; i>=0; i--) {
935                const char16_t* s = stringAt(i, &len);
936                STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
937                             String8(s).string(),
938                             i));
939                if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
940                    STRING_POOL_NOISY(ALOGI("MATCH!"));
941                    return i;
942                }
943            }
944        }
945    }
946
947    return NAME_NOT_FOUND;
948}
949
950size_t ResStringPool::size() const
951{
952    return (mError == NO_ERROR) ? mHeader->stringCount : 0;
953}
954
955size_t ResStringPool::styleCount() const
956{
957    return (mError == NO_ERROR) ? mHeader->styleCount : 0;
958}
959
960size_t ResStringPool::bytes() const
961{
962    return (mError == NO_ERROR) ? mHeader->header.size : 0;
963}
964
965bool ResStringPool::isSorted() const
966{
967    return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
968}
969
970bool ResStringPool::isUTF8() const
971{
972    return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
973}
974
975// --------------------------------------------------------------------
976// --------------------------------------------------------------------
977// --------------------------------------------------------------------
978
979ResXMLParser::ResXMLParser(const ResXMLTree& tree)
980    : mTree(tree), mEventCode(BAD_DOCUMENT)
981{
982}
983
984void ResXMLParser::restart()
985{
986    mCurNode = NULL;
987    mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
988}
989const ResStringPool& ResXMLParser::getStrings() const
990{
991    return mTree.mStrings;
992}
993
994ResXMLParser::event_code_t ResXMLParser::getEventType() const
995{
996    return mEventCode;
997}
998
999ResXMLParser::event_code_t ResXMLParser::next()
1000{
1001    if (mEventCode == START_DOCUMENT) {
1002        mCurNode = mTree.mRootNode;
1003        mCurExt = mTree.mRootExt;
1004        return (mEventCode=mTree.mRootCode);
1005    } else if (mEventCode >= FIRST_CHUNK_CODE) {
1006        return nextNode();
1007    }
1008    return mEventCode;
1009}
1010
1011int32_t ResXMLParser::getCommentID() const
1012{
1013    return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1014}
1015
1016const char16_t* ResXMLParser::getComment(size_t* outLen) const
1017{
1018    int32_t id = getCommentID();
1019    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1020}
1021
1022uint32_t ResXMLParser::getLineNumber() const
1023{
1024    return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1025}
1026
1027int32_t ResXMLParser::getTextID() const
1028{
1029    if (mEventCode == TEXT) {
1030        return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1031    }
1032    return -1;
1033}
1034
1035const char16_t* ResXMLParser::getText(size_t* outLen) const
1036{
1037    int32_t id = getTextID();
1038    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1039}
1040
1041ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1042{
1043    if (mEventCode == TEXT) {
1044        outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1045        return sizeof(Res_value);
1046    }
1047    return BAD_TYPE;
1048}
1049
1050int32_t ResXMLParser::getNamespacePrefixID() const
1051{
1052    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1053        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1054    }
1055    return -1;
1056}
1057
1058const char16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1059{
1060    int32_t id = getNamespacePrefixID();
1061    //printf("prefix=%d  event=%p\n", id, mEventCode);
1062    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1063}
1064
1065int32_t ResXMLParser::getNamespaceUriID() const
1066{
1067    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1068        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1069    }
1070    return -1;
1071}
1072
1073const char16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1074{
1075    int32_t id = getNamespaceUriID();
1076    //printf("uri=%d  event=%p\n", id, mEventCode);
1077    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1078}
1079
1080int32_t ResXMLParser::getElementNamespaceID() const
1081{
1082    if (mEventCode == START_TAG) {
1083        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1084    }
1085    if (mEventCode == END_TAG) {
1086        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1087    }
1088    return -1;
1089}
1090
1091const char16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1092{
1093    int32_t id = getElementNamespaceID();
1094    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1095}
1096
1097int32_t ResXMLParser::getElementNameID() const
1098{
1099    if (mEventCode == START_TAG) {
1100        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1101    }
1102    if (mEventCode == END_TAG) {
1103        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1104    }
1105    return -1;
1106}
1107
1108const char16_t* ResXMLParser::getElementName(size_t* outLen) const
1109{
1110    int32_t id = getElementNameID();
1111    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1112}
1113
1114size_t ResXMLParser::getAttributeCount() const
1115{
1116    if (mEventCode == START_TAG) {
1117        return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1118    }
1119    return 0;
1120}
1121
1122int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1123{
1124    if (mEventCode == START_TAG) {
1125        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1126        if (idx < dtohs(tag->attributeCount)) {
1127            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1128                (((const uint8_t*)tag)
1129                 + dtohs(tag->attributeStart)
1130                 + (dtohs(tag->attributeSize)*idx));
1131            return dtohl(attr->ns.index);
1132        }
1133    }
1134    return -2;
1135}
1136
1137const char16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1138{
1139    int32_t id = getAttributeNamespaceID(idx);
1140    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1141    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1142    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1143}
1144
1145const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1146{
1147    int32_t id = getAttributeNamespaceID(idx);
1148    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1149    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1150    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1151}
1152
1153int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1154{
1155    if (mEventCode == START_TAG) {
1156        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1157        if (idx < dtohs(tag->attributeCount)) {
1158            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1159                (((const uint8_t*)tag)
1160                 + dtohs(tag->attributeStart)
1161                 + (dtohs(tag->attributeSize)*idx));
1162            return dtohl(attr->name.index);
1163        }
1164    }
1165    return -1;
1166}
1167
1168const char16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1169{
1170    int32_t id = getAttributeNameID(idx);
1171    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1172    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1173    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1174}
1175
1176const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1177{
1178    int32_t id = getAttributeNameID(idx);
1179    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1180    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1181    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1182}
1183
1184uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1185{
1186    int32_t id = getAttributeNameID(idx);
1187    if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1188        return dtohl(mTree.mResIds[id]);
1189    }
1190    return 0;
1191}
1192
1193int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1194{
1195    if (mEventCode == START_TAG) {
1196        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1197        if (idx < dtohs(tag->attributeCount)) {
1198            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1199                (((const uint8_t*)tag)
1200                 + dtohs(tag->attributeStart)
1201                 + (dtohs(tag->attributeSize)*idx));
1202            return dtohl(attr->rawValue.index);
1203        }
1204    }
1205    return -1;
1206}
1207
1208const char16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1209{
1210    int32_t id = getAttributeValueStringID(idx);
1211    //XML_NOISY(printf("getAttributeValue 0x%x=0x%x\n", idx, id));
1212    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1213}
1214
1215int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1216{
1217    if (mEventCode == START_TAG) {
1218        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1219        if (idx < dtohs(tag->attributeCount)) {
1220            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1221                (((const uint8_t*)tag)
1222                 + dtohs(tag->attributeStart)
1223                 + (dtohs(tag->attributeSize)*idx));
1224            uint8_t type = attr->typedValue.dataType;
1225            if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1226                return type;
1227            }
1228
1229            // This is a dynamic reference. We adjust those references
1230            // to regular references at this level, so lie to the caller.
1231            return Res_value::TYPE_REFERENCE;
1232        }
1233    }
1234    return Res_value::TYPE_NULL;
1235}
1236
1237int32_t ResXMLParser::getAttributeData(size_t idx) const
1238{
1239    if (mEventCode == START_TAG) {
1240        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1241        if (idx < dtohs(tag->attributeCount)) {
1242            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1243                (((const uint8_t*)tag)
1244                 + dtohs(tag->attributeStart)
1245                 + (dtohs(tag->attributeSize)*idx));
1246            if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1247                    mTree.mDynamicRefTable == NULL) {
1248                return dtohl(attr->typedValue.data);
1249            }
1250
1251            uint32_t data = dtohl(attr->typedValue.data);
1252            if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1253                return data;
1254            }
1255        }
1256    }
1257    return 0;
1258}
1259
1260ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1261{
1262    if (mEventCode == START_TAG) {
1263        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1264        if (idx < dtohs(tag->attributeCount)) {
1265            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1266                (((const uint8_t*)tag)
1267                 + dtohs(tag->attributeStart)
1268                 + (dtohs(tag->attributeSize)*idx));
1269            outValue->copyFrom_dtoh(attr->typedValue);
1270            if (mTree.mDynamicRefTable != NULL &&
1271                    mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1272                return BAD_TYPE;
1273            }
1274            return sizeof(Res_value);
1275        }
1276    }
1277    return BAD_TYPE;
1278}
1279
1280ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1281{
1282    String16 nsStr(ns != NULL ? ns : "");
1283    String16 attrStr(attr);
1284    return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1285                            attrStr.string(), attrStr.size());
1286}
1287
1288ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1289                                       const char16_t* attr, size_t attrLen) const
1290{
1291    if (mEventCode == START_TAG) {
1292        if (attr == NULL) {
1293            return NAME_NOT_FOUND;
1294        }
1295        const size_t N = getAttributeCount();
1296        if (mTree.mStrings.isUTF8()) {
1297            String8 ns8, attr8;
1298            if (ns != NULL) {
1299                ns8 = String8(ns, nsLen);
1300            }
1301            attr8 = String8(attr, attrLen);
1302            STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF8 %s (%d) / %s (%d)", ns8.string(), nsLen,
1303                    attr8.string(), attrLen));
1304            for (size_t i=0; i<N; i++) {
1305                size_t curNsLen = 0, curAttrLen = 0;
1306                const char* curNs = getAttributeNamespace8(i, &curNsLen);
1307                const char* curAttr = getAttributeName8(i, &curAttrLen);
1308                STRING_POOL_NOISY(ALOGI("  curNs=%s (%d), curAttr=%s (%d)", curNs, curNsLen,
1309                        curAttr, curAttrLen));
1310                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1311                        && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1312                    if (ns == NULL) {
1313                        if (curNs == NULL) {
1314                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1315                            return i;
1316                        }
1317                    } else if (curNs != NULL) {
1318                        //printf(" --> ns=%s, curNs=%s\n",
1319                        //       String8(ns).string(), String8(curNs).string());
1320                        if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1321                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1322                            return i;
1323                        }
1324                    }
1325                }
1326            }
1327        } else {
1328            STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF16 %s (%d) / %s (%d)",
1329                    String8(ns, nsLen).string(), nsLen,
1330                    String8(attr, attrLen).string(), attrLen));
1331            for (size_t i=0; i<N; i++) {
1332                size_t curNsLen = 0, curAttrLen = 0;
1333                const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1334                const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1335                STRING_POOL_NOISY(ALOGI("  curNs=%s (%d), curAttr=%s (%d)",
1336                        String8(curNs, curNsLen).string(), curNsLen,
1337                        String8(curAttr, curAttrLen).string(), curAttrLen));
1338                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1339                        && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1340                    if (ns == NULL) {
1341                        if (curNs == NULL) {
1342                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1343                            return i;
1344                        }
1345                    } else if (curNs != NULL) {
1346                        //printf(" --> ns=%s, curNs=%s\n",
1347                        //       String8(ns).string(), String8(curNs).string());
1348                        if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1349                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1350                            return i;
1351                        }
1352                    }
1353                }
1354            }
1355        }
1356    }
1357
1358    return NAME_NOT_FOUND;
1359}
1360
1361ssize_t ResXMLParser::indexOfID() const
1362{
1363    if (mEventCode == START_TAG) {
1364        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1365        if (idx > 0) return (idx-1);
1366    }
1367    return NAME_NOT_FOUND;
1368}
1369
1370ssize_t ResXMLParser::indexOfClass() const
1371{
1372    if (mEventCode == START_TAG) {
1373        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1374        if (idx > 0) return (idx-1);
1375    }
1376    return NAME_NOT_FOUND;
1377}
1378
1379ssize_t ResXMLParser::indexOfStyle() const
1380{
1381    if (mEventCode == START_TAG) {
1382        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1383        if (idx > 0) return (idx-1);
1384    }
1385    return NAME_NOT_FOUND;
1386}
1387
1388ResXMLParser::event_code_t ResXMLParser::nextNode()
1389{
1390    if (mEventCode < 0) {
1391        return mEventCode;
1392    }
1393
1394    do {
1395        const ResXMLTree_node* next = (const ResXMLTree_node*)
1396            (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1397        //ALOGW("Next node: prev=%p, next=%p\n", mCurNode, next);
1398
1399        if (((const uint8_t*)next) >= mTree.mDataEnd) {
1400            mCurNode = NULL;
1401            return (mEventCode=END_DOCUMENT);
1402        }
1403
1404        if (mTree.validateNode(next) != NO_ERROR) {
1405            mCurNode = NULL;
1406            return (mEventCode=BAD_DOCUMENT);
1407        }
1408
1409        mCurNode = next;
1410        const uint16_t headerSize = dtohs(next->header.headerSize);
1411        const uint32_t totalSize = dtohl(next->header.size);
1412        mCurExt = ((const uint8_t*)next) + headerSize;
1413        size_t minExtSize = 0;
1414        event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1415        switch ((mEventCode=eventCode)) {
1416            case RES_XML_START_NAMESPACE_TYPE:
1417            case RES_XML_END_NAMESPACE_TYPE:
1418                minExtSize = sizeof(ResXMLTree_namespaceExt);
1419                break;
1420            case RES_XML_START_ELEMENT_TYPE:
1421                minExtSize = sizeof(ResXMLTree_attrExt);
1422                break;
1423            case RES_XML_END_ELEMENT_TYPE:
1424                minExtSize = sizeof(ResXMLTree_endElementExt);
1425                break;
1426            case RES_XML_CDATA_TYPE:
1427                minExtSize = sizeof(ResXMLTree_cdataExt);
1428                break;
1429            default:
1430                ALOGW("Unknown XML block: header type %d in node at %d\n",
1431                     (int)dtohs(next->header.type),
1432                     (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1433                continue;
1434        }
1435
1436        if ((totalSize-headerSize) < minExtSize) {
1437            ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1438                 (int)dtohs(next->header.type),
1439                 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1440                 (int)(totalSize-headerSize), (int)minExtSize);
1441            return (mEventCode=BAD_DOCUMENT);
1442        }
1443
1444        //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1445        //       mCurNode, mCurExt, headerSize, minExtSize);
1446
1447        return eventCode;
1448    } while (true);
1449}
1450
1451void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1452{
1453    pos->eventCode = mEventCode;
1454    pos->curNode = mCurNode;
1455    pos->curExt = mCurExt;
1456}
1457
1458void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1459{
1460    mEventCode = pos.eventCode;
1461    mCurNode = pos.curNode;
1462    mCurExt = pos.curExt;
1463}
1464
1465// --------------------------------------------------------------------
1466
1467static volatile int32_t gCount = 0;
1468
1469ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1470    : ResXMLParser(*this)
1471    , mDynamicRefTable(dynamicRefTable)
1472    , mError(NO_INIT), mOwnedData(NULL)
1473{
1474    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1475    restart();
1476}
1477
1478ResXMLTree::ResXMLTree()
1479    : ResXMLParser(*this)
1480    , mDynamicRefTable(NULL)
1481    , mError(NO_INIT), mOwnedData(NULL)
1482{
1483    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1484    restart();
1485}
1486
1487ResXMLTree::~ResXMLTree()
1488{
1489    //ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1490    uninit();
1491}
1492
1493status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1494{
1495    uninit();
1496    mEventCode = START_DOCUMENT;
1497
1498    if (!data || !size) {
1499        return (mError=BAD_TYPE);
1500    }
1501
1502    if (copyData) {
1503        mOwnedData = malloc(size);
1504        if (mOwnedData == NULL) {
1505            return (mError=NO_MEMORY);
1506        }
1507        memcpy(mOwnedData, data, size);
1508        data = mOwnedData;
1509    }
1510
1511    mHeader = (const ResXMLTree_header*)data;
1512    mSize = dtohl(mHeader->header.size);
1513    if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1514        ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1515             (int)dtohs(mHeader->header.headerSize),
1516             (int)dtohl(mHeader->header.size), (int)size);
1517        mError = BAD_TYPE;
1518        restart();
1519        return mError;
1520    }
1521    mDataEnd = ((const uint8_t*)mHeader) + mSize;
1522
1523    mStrings.uninit();
1524    mRootNode = NULL;
1525    mResIds = NULL;
1526    mNumResIds = 0;
1527
1528    // First look for a couple interesting chunks: the string block
1529    // and first XML node.
1530    const ResChunk_header* chunk =
1531        (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1532    const ResChunk_header* lastChunk = chunk;
1533    while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1534           ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1535        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1536        if (err != NO_ERROR) {
1537            mError = err;
1538            goto done;
1539        }
1540        const uint16_t type = dtohs(chunk->type);
1541        const size_t size = dtohl(chunk->size);
1542        XML_NOISY(printf("Scanning @ %p: type=0x%x, size=0x%x\n",
1543                     (void*)(((uint32_t)chunk)-((uint32_t)mHeader)), type, size));
1544        if (type == RES_STRING_POOL_TYPE) {
1545            mStrings.setTo(chunk, size);
1546        } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1547            mResIds = (const uint32_t*)
1548                (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1549            mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1550        } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1551                   && type <= RES_XML_LAST_CHUNK_TYPE) {
1552            if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1553                mError = BAD_TYPE;
1554                goto done;
1555            }
1556            mCurNode = (const ResXMLTree_node*)lastChunk;
1557            if (nextNode() == BAD_DOCUMENT) {
1558                mError = BAD_TYPE;
1559                goto done;
1560            }
1561            mRootNode = mCurNode;
1562            mRootExt = mCurExt;
1563            mRootCode = mEventCode;
1564            break;
1565        } else {
1566            XML_NOISY(printf("Skipping unknown chunk!\n"));
1567        }
1568        lastChunk = chunk;
1569        chunk = (const ResChunk_header*)
1570            (((const uint8_t*)chunk) + size);
1571    }
1572
1573    if (mRootNode == NULL) {
1574        ALOGW("Bad XML block: no root element node found\n");
1575        mError = BAD_TYPE;
1576        goto done;
1577    }
1578
1579    mError = mStrings.getError();
1580
1581done:
1582    restart();
1583    return mError;
1584}
1585
1586status_t ResXMLTree::getError() const
1587{
1588    return mError;
1589}
1590
1591void ResXMLTree::uninit()
1592{
1593    mError = NO_INIT;
1594    mStrings.uninit();
1595    if (mOwnedData) {
1596        free(mOwnedData);
1597        mOwnedData = NULL;
1598    }
1599    restart();
1600}
1601
1602status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1603{
1604    const uint16_t eventCode = dtohs(node->header.type);
1605
1606    status_t err = validate_chunk(
1607        &node->header, sizeof(ResXMLTree_node),
1608        mDataEnd, "ResXMLTree_node");
1609
1610    if (err >= NO_ERROR) {
1611        // Only perform additional validation on START nodes
1612        if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1613            return NO_ERROR;
1614        }
1615
1616        const uint16_t headerSize = dtohs(node->header.headerSize);
1617        const uint32_t size = dtohl(node->header.size);
1618        const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1619            (((const uint8_t*)node) + headerSize);
1620        // check for sensical values pulled out of the stream so far...
1621        if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1622                && ((void*)attrExt > (void*)node)) {
1623            const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1624                * dtohs(attrExt->attributeCount);
1625            if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1626                return NO_ERROR;
1627            }
1628            ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1629                    (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1630                    (unsigned int)(size-headerSize));
1631        }
1632        else {
1633            ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1634                (unsigned int)headerSize, (unsigned int)size);
1635        }
1636        return BAD_TYPE;
1637    }
1638
1639    return err;
1640
1641#if 0
1642    const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1643
1644    const uint16_t headerSize = dtohs(node->header.headerSize);
1645    const uint32_t size = dtohl(node->header.size);
1646
1647    if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1648        if (size >= headerSize) {
1649            if (((const uint8_t*)node) <= (mDataEnd-size)) {
1650                if (!isStart) {
1651                    return NO_ERROR;
1652                }
1653                if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1654                        <= (size-headerSize)) {
1655                    return NO_ERROR;
1656                }
1657                ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1658                        ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1659                        (int)(size-headerSize));
1660                return BAD_TYPE;
1661            }
1662            ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1663                    (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1664            return BAD_TYPE;
1665        }
1666        ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1667                (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1668                (int)headerSize, (int)size);
1669        return BAD_TYPE;
1670    }
1671    ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1672            (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1673            (int)headerSize);
1674    return BAD_TYPE;
1675#endif
1676}
1677
1678// --------------------------------------------------------------------
1679// --------------------------------------------------------------------
1680// --------------------------------------------------------------------
1681
1682void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1683    const size_t size = dtohl(o.size);
1684    if (size >= sizeof(ResTable_config)) {
1685        *this = o;
1686    } else {
1687        memcpy(this, &o, size);
1688        memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1689    }
1690}
1691
1692/* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1693        char out[4]) {
1694  if (in[0] & 0x80) {
1695      // The high bit is "1", which means this is a packed three letter
1696      // language code.
1697
1698      // The smallest 5 bits of the second char are the first alphabet.
1699      const uint8_t first = in[1] & 0x1f;
1700      // The last three bits of the second char and the first two bits
1701      // of the first char are the second alphabet.
1702      const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1703      // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1704      const uint8_t third = (in[0] & 0x7c) >> 2;
1705
1706      out[0] = first + base;
1707      out[1] = second + base;
1708      out[2] = third + base;
1709      out[3] = 0;
1710
1711      return 3;
1712  }
1713
1714  if (in[0]) {
1715      memcpy(out, in, 2);
1716      memset(out + 2, 0, 2);
1717      return 2;
1718  }
1719
1720  memset(out, 0, 4);
1721  return 0;
1722}
1723
1724/* static */ void packLanguageOrRegion(const char* in, const char base,
1725        char out[2]) {
1726  if (in[2] == 0 || in[2] == '-') {
1727      out[0] = in[0];
1728      out[1] = in[1];
1729  } else {
1730      uint8_t first = (in[0] - base) & 0x007f;
1731      uint8_t second = (in[1] - base) & 0x007f;
1732      uint8_t third = (in[2] - base) & 0x007f;
1733
1734      out[0] = (0x80 | (third << 2) | (second >> 3));
1735      out[1] = ((second << 5) | first);
1736  }
1737}
1738
1739
1740void ResTable_config::packLanguage(const char* language) {
1741    packLanguageOrRegion(language, 'a', this->language);
1742}
1743
1744void ResTable_config::packRegion(const char* region) {
1745    packLanguageOrRegion(region, '0', this->country);
1746}
1747
1748size_t ResTable_config::unpackLanguage(char language[4]) const {
1749    return unpackLanguageOrRegion(this->language, 'a', language);
1750}
1751
1752size_t ResTable_config::unpackRegion(char region[4]) const {
1753    return unpackLanguageOrRegion(this->country, '0', region);
1754}
1755
1756
1757void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1758    copyFromDeviceNoSwap(o);
1759    size = sizeof(ResTable_config);
1760    mcc = dtohs(mcc);
1761    mnc = dtohs(mnc);
1762    density = dtohs(density);
1763    screenWidth = dtohs(screenWidth);
1764    screenHeight = dtohs(screenHeight);
1765    sdkVersion = dtohs(sdkVersion);
1766    minorVersion = dtohs(minorVersion);
1767    smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1768    screenWidthDp = dtohs(screenWidthDp);
1769    screenHeightDp = dtohs(screenHeightDp);
1770}
1771
1772void ResTable_config::swapHtoD() {
1773    size = htodl(size);
1774    mcc = htods(mcc);
1775    mnc = htods(mnc);
1776    density = htods(density);
1777    screenWidth = htods(screenWidth);
1778    screenHeight = htods(screenHeight);
1779    sdkVersion = htods(sdkVersion);
1780    minorVersion = htods(minorVersion);
1781    smallestScreenWidthDp = htods(smallestScreenWidthDp);
1782    screenWidthDp = htods(screenWidthDp);
1783    screenHeightDp = htods(screenHeightDp);
1784}
1785
1786/* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1787    if (l.locale != r.locale) {
1788        // NOTE: This is the old behaviour with respect to comparison orders.
1789        // The diff value here doesn't make much sense (given our bit packing scheme)
1790        // but it's stable, and that's all we need.
1791        return l.locale - r.locale;
1792    }
1793
1794    // The language & region are equal, so compare the scripts and variants.
1795    int script = memcmp(l.localeScript, r.localeScript, sizeof(l.localeScript));
1796    if (script) {
1797        return script;
1798    }
1799
1800    // The language, region and script are equal, so compare variants.
1801    //
1802    // This should happen very infrequently (if at all.)
1803    return memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1804}
1805
1806int ResTable_config::compare(const ResTable_config& o) const {
1807    int32_t diff = (int32_t)(imsi - o.imsi);
1808    if (diff != 0) return diff;
1809    diff = compareLocales(*this, o);
1810    if (diff != 0) return diff;
1811    diff = (int32_t)(screenType - o.screenType);
1812    if (diff != 0) return diff;
1813    diff = (int32_t)(input - o.input);
1814    if (diff != 0) return diff;
1815    diff = (int32_t)(screenSize - o.screenSize);
1816    if (diff != 0) return diff;
1817    diff = (int32_t)(version - o.version);
1818    if (diff != 0) return diff;
1819    diff = (int32_t)(screenLayout - o.screenLayout);
1820    if (diff != 0) return diff;
1821    diff = (int32_t)(uiMode - o.uiMode);
1822    if (diff != 0) return diff;
1823    diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1824    if (diff != 0) return diff;
1825    diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1826    return (int)diff;
1827}
1828
1829int ResTable_config::compareLogical(const ResTable_config& o) const {
1830    if (mcc != o.mcc) {
1831        return mcc < o.mcc ? -1 : 1;
1832    }
1833    if (mnc != o.mnc) {
1834        return mnc < o.mnc ? -1 : 1;
1835    }
1836
1837    int diff = compareLocales(*this, o);
1838    if (diff < 0) {
1839        return -1;
1840    }
1841    if (diff > 0) {
1842        return 1;
1843    }
1844
1845    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1846        return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1847    }
1848    if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1849        return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1850    }
1851    if (screenWidthDp != o.screenWidthDp) {
1852        return screenWidthDp < o.screenWidthDp ? -1 : 1;
1853    }
1854    if (screenHeightDp != o.screenHeightDp) {
1855        return screenHeightDp < o.screenHeightDp ? -1 : 1;
1856    }
1857    if (screenWidth != o.screenWidth) {
1858        return screenWidth < o.screenWidth ? -1 : 1;
1859    }
1860    if (screenHeight != o.screenHeight) {
1861        return screenHeight < o.screenHeight ? -1 : 1;
1862    }
1863    if (density != o.density) {
1864        return density < o.density ? -1 : 1;
1865    }
1866    if (orientation != o.orientation) {
1867        return orientation < o.orientation ? -1 : 1;
1868    }
1869    if (touchscreen != o.touchscreen) {
1870        return touchscreen < o.touchscreen ? -1 : 1;
1871    }
1872    if (input != o.input) {
1873        return input < o.input ? -1 : 1;
1874    }
1875    if (screenLayout != o.screenLayout) {
1876        return screenLayout < o.screenLayout ? -1 : 1;
1877    }
1878    if (uiMode != o.uiMode) {
1879        return uiMode < o.uiMode ? -1 : 1;
1880    }
1881    if (version != o.version) {
1882        return version < o.version ? -1 : 1;
1883    }
1884    return 0;
1885}
1886
1887int ResTable_config::diff(const ResTable_config& o) const {
1888    int diffs = 0;
1889    if (mcc != o.mcc) diffs |= CONFIG_MCC;
1890    if (mnc != o.mnc) diffs |= CONFIG_MNC;
1891    if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1892    if (density != o.density) diffs |= CONFIG_DENSITY;
1893    if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1894    if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1895            diffs |= CONFIG_KEYBOARD_HIDDEN;
1896    if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1897    if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1898    if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1899    if (version != o.version) diffs |= CONFIG_VERSION;
1900    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
1901    if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
1902    if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1903    if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1904    if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1905
1906    const int diff = compareLocales(*this, o);
1907    if (diff) diffs |= CONFIG_LOCALE;
1908
1909    return diffs;
1910}
1911
1912int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
1913    if (locale || o.locale) {
1914        if (language[0] != o.language[0]) {
1915            if (!language[0]) return -1;
1916            if (!o.language[0]) return 1;
1917        }
1918
1919        if (country[0] != o.country[0]) {
1920            if (!country[0]) return -1;
1921            if (!o.country[0]) return 1;
1922        }
1923    }
1924
1925    // There isn't a well specified "importance" order between variants and
1926    // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
1927    // specific than "en-US-POSIX".
1928    //
1929    // We therefore arbitrarily decide to give priority to variants over
1930    // scripts since it seems more useful to do so. We will consider
1931    // "en-US-POSIX" to be more specific than "en-Latn-US".
1932
1933    const int score = ((localeScript[0] != 0) ? 1 : 0) +
1934        ((localeVariant[0] != 0) ? 2 : 0);
1935
1936    const int oScore = ((o.localeScript[0] != 0) ? 1 : 0) +
1937        ((o.localeVariant[0] != 0) ? 2 : 0);
1938
1939    return score - oScore;
1940
1941}
1942
1943bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
1944    // The order of the following tests defines the importance of one
1945    // configuration parameter over another.  Those tests first are more
1946    // important, trumping any values in those following them.
1947    if (imsi || o.imsi) {
1948        if (mcc != o.mcc) {
1949            if (!mcc) return false;
1950            if (!o.mcc) return true;
1951        }
1952
1953        if (mnc != o.mnc) {
1954            if (!mnc) return false;
1955            if (!o.mnc) return true;
1956        }
1957    }
1958
1959    if (locale || o.locale) {
1960        const int diff = isLocaleMoreSpecificThan(o);
1961        if (diff < 0) {
1962            return false;
1963        }
1964
1965        if (diff > 0) {
1966            return true;
1967        }
1968    }
1969
1970    if (screenLayout || o.screenLayout) {
1971        if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
1972            if (!(screenLayout & MASK_LAYOUTDIR)) return false;
1973            if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
1974        }
1975    }
1976
1977    if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1978        if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1979            if (!smallestScreenWidthDp) return false;
1980            if (!o.smallestScreenWidthDp) return true;
1981        }
1982    }
1983
1984    if (screenSizeDp || o.screenSizeDp) {
1985        if (screenWidthDp != o.screenWidthDp) {
1986            if (!screenWidthDp) return false;
1987            if (!o.screenWidthDp) return true;
1988        }
1989
1990        if (screenHeightDp != o.screenHeightDp) {
1991            if (!screenHeightDp) return false;
1992            if (!o.screenHeightDp) return true;
1993        }
1994    }
1995
1996    if (screenLayout || o.screenLayout) {
1997        if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
1998            if (!(screenLayout & MASK_SCREENSIZE)) return false;
1999            if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2000        }
2001        if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2002            if (!(screenLayout & MASK_SCREENLONG)) return false;
2003            if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2004        }
2005    }
2006
2007    if (orientation != o.orientation) {
2008        if (!orientation) return false;
2009        if (!o.orientation) return true;
2010    }
2011
2012    if (uiMode || o.uiMode) {
2013        if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2014            if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2015            if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2016        }
2017        if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2018            if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2019            if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2020        }
2021    }
2022
2023    // density is never 'more specific'
2024    // as the default just equals 160
2025
2026    if (touchscreen != o.touchscreen) {
2027        if (!touchscreen) return false;
2028        if (!o.touchscreen) return true;
2029    }
2030
2031    if (input || o.input) {
2032        if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2033            if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2034            if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2035        }
2036
2037        if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2038            if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2039            if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2040        }
2041
2042        if (keyboard != o.keyboard) {
2043            if (!keyboard) return false;
2044            if (!o.keyboard) return true;
2045        }
2046
2047        if (navigation != o.navigation) {
2048            if (!navigation) return false;
2049            if (!o.navigation) return true;
2050        }
2051    }
2052
2053    if (screenSize || o.screenSize) {
2054        if (screenWidth != o.screenWidth) {
2055            if (!screenWidth) return false;
2056            if (!o.screenWidth) return true;
2057        }
2058
2059        if (screenHeight != o.screenHeight) {
2060            if (!screenHeight) return false;
2061            if (!o.screenHeight) return true;
2062        }
2063    }
2064
2065    if (version || o.version) {
2066        if (sdkVersion != o.sdkVersion) {
2067            if (!sdkVersion) return false;
2068            if (!o.sdkVersion) return true;
2069        }
2070
2071        if (minorVersion != o.minorVersion) {
2072            if (!minorVersion) return false;
2073            if (!o.minorVersion) return true;
2074        }
2075    }
2076    return false;
2077}
2078
2079bool ResTable_config::isBetterThan(const ResTable_config& o,
2080        const ResTable_config* requested) const {
2081    if (requested) {
2082        if (imsi || o.imsi) {
2083            if ((mcc != o.mcc) && requested->mcc) {
2084                return (mcc);
2085            }
2086
2087            if ((mnc != o.mnc) && requested->mnc) {
2088                return (mnc);
2089            }
2090        }
2091
2092        if (locale || o.locale) {
2093            if ((language[0] != o.language[0]) && requested->language[0]) {
2094                return (language[0]);
2095            }
2096
2097            if ((country[0] != o.country[0]) && requested->country[0]) {
2098                return (country[0]);
2099            }
2100        }
2101
2102        if (localeScript[0] || o.localeScript[0]) {
2103            if (localeScript[0] != o.localeScript[0] && requested->localeScript[0]) {
2104                return localeScript[0];
2105            }
2106        }
2107
2108        if (localeVariant[0] || o.localeVariant[0]) {
2109            if (localeVariant[0] != o.localeVariant[0] && requested->localeVariant[0]) {
2110                return localeVariant[0];
2111            }
2112        }
2113
2114        if (screenLayout || o.screenLayout) {
2115            if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2116                    && (requested->screenLayout & MASK_LAYOUTDIR)) {
2117                int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2118                int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2119                return (myLayoutDir > oLayoutDir);
2120            }
2121        }
2122
2123        if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2124            // The configuration closest to the actual size is best.
2125            // We assume that larger configs have already been filtered
2126            // out at this point.  That means we just want the largest one.
2127            if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2128                return smallestScreenWidthDp > o.smallestScreenWidthDp;
2129            }
2130        }
2131
2132        if (screenSizeDp || o.screenSizeDp) {
2133            // "Better" is based on the sum of the difference between both
2134            // width and height from the requested dimensions.  We are
2135            // assuming the invalid configs (with smaller dimens) have
2136            // already been filtered.  Note that if a particular dimension
2137            // is unspecified, we will end up with a large value (the
2138            // difference between 0 and the requested dimension), which is
2139            // good since we will prefer a config that has specified a
2140            // dimension value.
2141            int myDelta = 0, otherDelta = 0;
2142            if (requested->screenWidthDp) {
2143                myDelta += requested->screenWidthDp - screenWidthDp;
2144                otherDelta += requested->screenWidthDp - o.screenWidthDp;
2145            }
2146            if (requested->screenHeightDp) {
2147                myDelta += requested->screenHeightDp - screenHeightDp;
2148                otherDelta += requested->screenHeightDp - o.screenHeightDp;
2149            }
2150            //ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2151            //    screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2152            //    requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2153            if (myDelta != otherDelta) {
2154                return myDelta < otherDelta;
2155            }
2156        }
2157
2158        if (screenLayout || o.screenLayout) {
2159            if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2160                    && (requested->screenLayout & MASK_SCREENSIZE)) {
2161                // A little backwards compatibility here: undefined is
2162                // considered equivalent to normal.  But only if the
2163                // requested size is at least normal; otherwise, small
2164                // is better than the default.
2165                int mySL = (screenLayout & MASK_SCREENSIZE);
2166                int oSL = (o.screenLayout & MASK_SCREENSIZE);
2167                int fixedMySL = mySL;
2168                int fixedOSL = oSL;
2169                if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2170                    if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2171                    if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2172                }
2173                // For screen size, the best match is the one that is
2174                // closest to the requested screen size, but not over
2175                // (the not over part is dealt with in match() below).
2176                if (fixedMySL == fixedOSL) {
2177                    // If the two are the same, but 'this' is actually
2178                    // undefined, then the other is really a better match.
2179                    if (mySL == 0) return false;
2180                    return true;
2181                }
2182                if (fixedMySL != fixedOSL) {
2183                    return fixedMySL > fixedOSL;
2184                }
2185            }
2186            if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2187                    && (requested->screenLayout & MASK_SCREENLONG)) {
2188                return (screenLayout & MASK_SCREENLONG);
2189            }
2190        }
2191
2192        if ((orientation != o.orientation) && requested->orientation) {
2193            return (orientation);
2194        }
2195
2196        if (uiMode || o.uiMode) {
2197            if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2198                    && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2199                return (uiMode & MASK_UI_MODE_TYPE);
2200            }
2201            if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2202                    && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2203                return (uiMode & MASK_UI_MODE_NIGHT);
2204            }
2205        }
2206
2207        if (screenType || o.screenType) {
2208            if (density != o.density) {
2209                // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2210                const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2211                const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2212
2213                // We always prefer DENSITY_ANY over scaling a density bucket.
2214                if (thisDensity == ResTable_config::DENSITY_ANY) {
2215                    return true;
2216                } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2217                    return false;
2218                }
2219
2220                int requestedDensity = requested->density;
2221                if (requested->density == 0 ||
2222                        requested->density == ResTable_config::DENSITY_ANY) {
2223                    requestedDensity = ResTable_config::DENSITY_MEDIUM;
2224                }
2225
2226                // DENSITY_ANY is now dealt with. We should look to
2227                // pick a density bucket and potentially scale it.
2228                // Any density is potentially useful
2229                // because the system will scale it.  Scaling down
2230                // is generally better than scaling up.
2231                int h = thisDensity;
2232                int l = otherDensity;
2233                bool bImBigger = true;
2234                if (l > h) {
2235                    int t = h;
2236                    h = l;
2237                    l = t;
2238                    bImBigger = false;
2239                }
2240
2241                if (requestedDensity >= h) {
2242                    // requested value higher than both l and h, give h
2243                    return bImBigger;
2244                }
2245                if (l >= requestedDensity) {
2246                    // requested value lower than both l and h, give l
2247                    return !bImBigger;
2248                }
2249                // saying that scaling down is 2x better than up
2250                if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2251                    return !bImBigger;
2252                } else {
2253                    return bImBigger;
2254                }
2255            }
2256
2257            if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2258                return (touchscreen);
2259            }
2260        }
2261
2262        if (input || o.input) {
2263            const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2264            const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2265            if (keysHidden != oKeysHidden) {
2266                const int reqKeysHidden =
2267                        requested->inputFlags & MASK_KEYSHIDDEN;
2268                if (reqKeysHidden) {
2269
2270                    if (!keysHidden) return false;
2271                    if (!oKeysHidden) return true;
2272                    // For compatibility, we count KEYSHIDDEN_NO as being
2273                    // the same as KEYSHIDDEN_SOFT.  Here we disambiguate
2274                    // these by making an exact match more specific.
2275                    if (reqKeysHidden == keysHidden) return true;
2276                    if (reqKeysHidden == oKeysHidden) return false;
2277                }
2278            }
2279
2280            const int navHidden = inputFlags & MASK_NAVHIDDEN;
2281            const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2282            if (navHidden != oNavHidden) {
2283                const int reqNavHidden =
2284                        requested->inputFlags & MASK_NAVHIDDEN;
2285                if (reqNavHidden) {
2286
2287                    if (!navHidden) return false;
2288                    if (!oNavHidden) return true;
2289                }
2290            }
2291
2292            if ((keyboard != o.keyboard) && requested->keyboard) {
2293                return (keyboard);
2294            }
2295
2296            if ((navigation != o.navigation) && requested->navigation) {
2297                return (navigation);
2298            }
2299        }
2300
2301        if (screenSize || o.screenSize) {
2302            // "Better" is based on the sum of the difference between both
2303            // width and height from the requested dimensions.  We are
2304            // assuming the invalid configs (with smaller sizes) have
2305            // already been filtered.  Note that if a particular dimension
2306            // is unspecified, we will end up with a large value (the
2307            // difference between 0 and the requested dimension), which is
2308            // good since we will prefer a config that has specified a
2309            // size value.
2310            int myDelta = 0, otherDelta = 0;
2311            if (requested->screenWidth) {
2312                myDelta += requested->screenWidth - screenWidth;
2313                otherDelta += requested->screenWidth - o.screenWidth;
2314            }
2315            if (requested->screenHeight) {
2316                myDelta += requested->screenHeight - screenHeight;
2317                otherDelta += requested->screenHeight - o.screenHeight;
2318            }
2319            if (myDelta != otherDelta) {
2320                return myDelta < otherDelta;
2321            }
2322        }
2323
2324        if (version || o.version) {
2325            if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2326                return (sdkVersion > o.sdkVersion);
2327            }
2328
2329            if ((minorVersion != o.minorVersion) &&
2330                    requested->minorVersion) {
2331                return (minorVersion);
2332            }
2333        }
2334
2335        return false;
2336    }
2337    return isMoreSpecificThan(o);
2338}
2339
2340bool ResTable_config::match(const ResTable_config& settings) const {
2341    if (imsi != 0) {
2342        if (mcc != 0 && mcc != settings.mcc) {
2343            return false;
2344        }
2345        if (mnc != 0 && mnc != settings.mnc) {
2346            return false;
2347        }
2348    }
2349    if (locale != 0) {
2350        // Don't consider the script & variants when deciding matches.
2351        //
2352        // If we two configs differ only in their script or language, they
2353        // can be weeded out in the isMoreSpecificThan test.
2354        if (language[0] != 0
2355            && (language[0] != settings.language[0]
2356                || language[1] != settings.language[1])) {
2357            return false;
2358        }
2359
2360        if (country[0] != 0
2361            && (country[0] != settings.country[0]
2362                || country[1] != settings.country[1])) {
2363            return false;
2364        }
2365    }
2366
2367    if (screenConfig != 0) {
2368        const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2369        const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2370        if (layoutDir != 0 && layoutDir != setLayoutDir) {
2371            return false;
2372        }
2373
2374        const int screenSize = screenLayout&MASK_SCREENSIZE;
2375        const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2376        // Any screen sizes for larger screens than the setting do not
2377        // match.
2378        if (screenSize != 0 && screenSize > setScreenSize) {
2379            return false;
2380        }
2381
2382        const int screenLong = screenLayout&MASK_SCREENLONG;
2383        const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2384        if (screenLong != 0 && screenLong != setScreenLong) {
2385            return false;
2386        }
2387
2388        const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2389        const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2390        if (uiModeType != 0 && uiModeType != setUiModeType) {
2391            return false;
2392        }
2393
2394        const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2395        const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2396        if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2397            return false;
2398        }
2399
2400        if (smallestScreenWidthDp != 0
2401                && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2402            return false;
2403        }
2404    }
2405    if (screenSizeDp != 0) {
2406        if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2407            //ALOGI("Filtering out width %d in requested %d", screenWidthDp, settings.screenWidthDp);
2408            return false;
2409        }
2410        if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2411            //ALOGI("Filtering out height %d in requested %d", screenHeightDp, settings.screenHeightDp);
2412            return false;
2413        }
2414    }
2415    if (screenType != 0) {
2416        if (orientation != 0 && orientation != settings.orientation) {
2417            return false;
2418        }
2419        // density always matches - we can scale it.  See isBetterThan
2420        if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2421            return false;
2422        }
2423    }
2424    if (input != 0) {
2425        const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2426        const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2427        if (keysHidden != 0 && keysHidden != setKeysHidden) {
2428            // For compatibility, we count a request for KEYSHIDDEN_NO as also
2429            // matching the more recent KEYSHIDDEN_SOFT.  Basically
2430            // KEYSHIDDEN_NO means there is some kind of keyboard available.
2431            //ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2432            if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2433                //ALOGI("No match!");
2434                return false;
2435            }
2436        }
2437        const int navHidden = inputFlags&MASK_NAVHIDDEN;
2438        const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2439        if (navHidden != 0 && navHidden != setNavHidden) {
2440            return false;
2441        }
2442        if (keyboard != 0 && keyboard != settings.keyboard) {
2443            return false;
2444        }
2445        if (navigation != 0 && navigation != settings.navigation) {
2446            return false;
2447        }
2448    }
2449    if (screenSize != 0) {
2450        if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2451            return false;
2452        }
2453        if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2454            return false;
2455        }
2456    }
2457    if (version != 0) {
2458        if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2459            return false;
2460        }
2461        if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2462            return false;
2463        }
2464    }
2465    return true;
2466}
2467
2468void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const {
2469    memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2470
2471    // This represents the "any" locale value, which has traditionally been
2472    // represented by the empty string.
2473    if (!language[0] && !country[0]) {
2474        return;
2475    }
2476
2477    size_t charsWritten = 0;
2478    if (language[0]) {
2479        charsWritten += unpackLanguage(str);
2480    }
2481
2482    if (localeScript[0]) {
2483        if (charsWritten) {
2484            str[charsWritten++] = '-';
2485        }
2486        memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2487        charsWritten += sizeof(localeScript);
2488    }
2489
2490    if (country[0]) {
2491        if (charsWritten) {
2492            str[charsWritten++] = '-';
2493        }
2494        charsWritten += unpackRegion(str + charsWritten);
2495    }
2496
2497    if (localeVariant[0]) {
2498        if (charsWritten) {
2499            str[charsWritten++] = '-';
2500        }
2501        memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2502    }
2503}
2504
2505/* static */ inline bool assignLocaleComponent(ResTable_config* config,
2506        const char* start, size_t size) {
2507
2508  switch (size) {
2509       case 0:
2510           return false;
2511       case 2:
2512       case 3:
2513           config->language[0] ? config->packRegion(start) : config->packLanguage(start);
2514           break;
2515       case 4:
2516           config->localeScript[0] = toupper(start[0]);
2517           for (size_t i = 1; i < 4; ++i) {
2518               config->localeScript[i] = tolower(start[i]);
2519           }
2520           break;
2521       case 5:
2522       case 6:
2523       case 7:
2524       case 8:
2525           for (size_t i = 0; i < size; ++i) {
2526               config->localeVariant[i] = tolower(start[i]);
2527           }
2528           break;
2529       default:
2530           return false;
2531  }
2532
2533  return true;
2534}
2535
2536void ResTable_config::setBcp47Locale(const char* in) {
2537    locale = 0;
2538    memset(localeScript, 0, sizeof(localeScript));
2539    memset(localeVariant, 0, sizeof(localeVariant));
2540
2541    const char* separator = in;
2542    const char* start = in;
2543    while ((separator = strchr(start, '-')) != NULL) {
2544        const size_t size = separator - start;
2545        if (!assignLocaleComponent(this, start, size)) {
2546            fprintf(stderr, "Invalid BCP-47 locale string: %s", in);
2547        }
2548
2549        start = (separator + 1);
2550    }
2551
2552    const size_t size = in + strlen(in) - start;
2553    assignLocaleComponent(this, start, size);
2554}
2555
2556String8 ResTable_config::toString() const {
2557    String8 res;
2558
2559    if (mcc != 0) {
2560        if (res.size() > 0) res.append("-");
2561        res.appendFormat("mcc%d", dtohs(mcc));
2562    }
2563    if (mnc != 0) {
2564        if (res.size() > 0) res.append("-");
2565        res.appendFormat("mnc%d", dtohs(mnc));
2566    }
2567
2568    char localeStr[RESTABLE_MAX_LOCALE_LEN];
2569    getBcp47Locale(localeStr);
2570    if (strlen(localeStr) > 0) {
2571        if (res.size() > 0) res.append("-");
2572        res.append(localeStr);
2573    }
2574
2575    if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2576        if (res.size() > 0) res.append("-");
2577        switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2578            case ResTable_config::LAYOUTDIR_LTR:
2579                res.append("ldltr");
2580                break;
2581            case ResTable_config::LAYOUTDIR_RTL:
2582                res.append("ldrtl");
2583                break;
2584            default:
2585                res.appendFormat("layoutDir=%d",
2586                        dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2587                break;
2588        }
2589    }
2590    if (smallestScreenWidthDp != 0) {
2591        if (res.size() > 0) res.append("-");
2592        res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2593    }
2594    if (screenWidthDp != 0) {
2595        if (res.size() > 0) res.append("-");
2596        res.appendFormat("w%ddp", dtohs(screenWidthDp));
2597    }
2598    if (screenHeightDp != 0) {
2599        if (res.size() > 0) res.append("-");
2600        res.appendFormat("h%ddp", dtohs(screenHeightDp));
2601    }
2602    if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2603        if (res.size() > 0) res.append("-");
2604        switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2605            case ResTable_config::SCREENSIZE_SMALL:
2606                res.append("small");
2607                break;
2608            case ResTable_config::SCREENSIZE_NORMAL:
2609                res.append("normal");
2610                break;
2611            case ResTable_config::SCREENSIZE_LARGE:
2612                res.append("large");
2613                break;
2614            case ResTable_config::SCREENSIZE_XLARGE:
2615                res.append("xlarge");
2616                break;
2617            default:
2618                res.appendFormat("screenLayoutSize=%d",
2619                        dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2620                break;
2621        }
2622    }
2623    if ((screenLayout&MASK_SCREENLONG) != 0) {
2624        if (res.size() > 0) res.append("-");
2625        switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2626            case ResTable_config::SCREENLONG_NO:
2627                res.append("notlong");
2628                break;
2629            case ResTable_config::SCREENLONG_YES:
2630                res.append("long");
2631                break;
2632            default:
2633                res.appendFormat("screenLayoutLong=%d",
2634                        dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2635                break;
2636        }
2637    }
2638    if (orientation != ORIENTATION_ANY) {
2639        if (res.size() > 0) res.append("-");
2640        switch (orientation) {
2641            case ResTable_config::ORIENTATION_PORT:
2642                res.append("port");
2643                break;
2644            case ResTable_config::ORIENTATION_LAND:
2645                res.append("land");
2646                break;
2647            case ResTable_config::ORIENTATION_SQUARE:
2648                res.append("square");
2649                break;
2650            default:
2651                res.appendFormat("orientation=%d", dtohs(orientation));
2652                break;
2653        }
2654    }
2655    if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2656        if (res.size() > 0) res.append("-");
2657        switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2658            case ResTable_config::UI_MODE_TYPE_DESK:
2659                res.append("desk");
2660                break;
2661            case ResTable_config::UI_MODE_TYPE_CAR:
2662                res.append("car");
2663                break;
2664            case ResTable_config::UI_MODE_TYPE_TELEVISION:
2665                res.append("television");
2666                break;
2667            case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2668                res.append("appliance");
2669                break;
2670            case ResTable_config::UI_MODE_TYPE_WATCH:
2671                res.append("watch");
2672                break;
2673            default:
2674                res.appendFormat("uiModeType=%d",
2675                        dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2676                break;
2677        }
2678    }
2679    if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2680        if (res.size() > 0) res.append("-");
2681        switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2682            case ResTable_config::UI_MODE_NIGHT_NO:
2683                res.append("notnight");
2684                break;
2685            case ResTable_config::UI_MODE_NIGHT_YES:
2686                res.append("night");
2687                break;
2688            default:
2689                res.appendFormat("uiModeNight=%d",
2690                        dtohs(uiMode&MASK_UI_MODE_NIGHT));
2691                break;
2692        }
2693    }
2694    if (density != DENSITY_DEFAULT) {
2695        if (res.size() > 0) res.append("-");
2696        switch (density) {
2697            case ResTable_config::DENSITY_LOW:
2698                res.append("ldpi");
2699                break;
2700            case ResTable_config::DENSITY_MEDIUM:
2701                res.append("mdpi");
2702                break;
2703            case ResTable_config::DENSITY_TV:
2704                res.append("tvdpi");
2705                break;
2706            case ResTable_config::DENSITY_HIGH:
2707                res.append("hdpi");
2708                break;
2709            case ResTable_config::DENSITY_XHIGH:
2710                res.append("xhdpi");
2711                break;
2712            case ResTable_config::DENSITY_XXHIGH:
2713                res.append("xxhdpi");
2714                break;
2715            case ResTable_config::DENSITY_XXXHIGH:
2716                res.append("xxxhdpi");
2717                break;
2718            case ResTable_config::DENSITY_NONE:
2719                res.append("nodpi");
2720                break;
2721            case ResTable_config::DENSITY_ANY:
2722                res.append("anydpi");
2723                break;
2724            default:
2725                res.appendFormat("%ddpi", dtohs(density));
2726                break;
2727        }
2728    }
2729    if (touchscreen != TOUCHSCREEN_ANY) {
2730        if (res.size() > 0) res.append("-");
2731        switch (touchscreen) {
2732            case ResTable_config::TOUCHSCREEN_NOTOUCH:
2733                res.append("notouch");
2734                break;
2735            case ResTable_config::TOUCHSCREEN_FINGER:
2736                res.append("finger");
2737                break;
2738            case ResTable_config::TOUCHSCREEN_STYLUS:
2739                res.append("stylus");
2740                break;
2741            default:
2742                res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2743                break;
2744        }
2745    }
2746    if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2747        if (res.size() > 0) res.append("-");
2748        switch (inputFlags&MASK_KEYSHIDDEN) {
2749            case ResTable_config::KEYSHIDDEN_NO:
2750                res.append("keysexposed");
2751                break;
2752            case ResTable_config::KEYSHIDDEN_YES:
2753                res.append("keyshidden");
2754                break;
2755            case ResTable_config::KEYSHIDDEN_SOFT:
2756                res.append("keyssoft");
2757                break;
2758        }
2759    }
2760    if (keyboard != KEYBOARD_ANY) {
2761        if (res.size() > 0) res.append("-");
2762        switch (keyboard) {
2763            case ResTable_config::KEYBOARD_NOKEYS:
2764                res.append("nokeys");
2765                break;
2766            case ResTable_config::KEYBOARD_QWERTY:
2767                res.append("qwerty");
2768                break;
2769            case ResTable_config::KEYBOARD_12KEY:
2770                res.append("12key");
2771                break;
2772            default:
2773                res.appendFormat("keyboard=%d", dtohs(keyboard));
2774                break;
2775        }
2776    }
2777    if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2778        if (res.size() > 0) res.append("-");
2779        switch (inputFlags&MASK_NAVHIDDEN) {
2780            case ResTable_config::NAVHIDDEN_NO:
2781                res.append("navexposed");
2782                break;
2783            case ResTable_config::NAVHIDDEN_YES:
2784                res.append("navhidden");
2785                break;
2786            default:
2787                res.appendFormat("inputFlagsNavHidden=%d",
2788                        dtohs(inputFlags&MASK_NAVHIDDEN));
2789                break;
2790        }
2791    }
2792    if (navigation != NAVIGATION_ANY) {
2793        if (res.size() > 0) res.append("-");
2794        switch (navigation) {
2795            case ResTable_config::NAVIGATION_NONAV:
2796                res.append("nonav");
2797                break;
2798            case ResTable_config::NAVIGATION_DPAD:
2799                res.append("dpad");
2800                break;
2801            case ResTable_config::NAVIGATION_TRACKBALL:
2802                res.append("trackball");
2803                break;
2804            case ResTable_config::NAVIGATION_WHEEL:
2805                res.append("wheel");
2806                break;
2807            default:
2808                res.appendFormat("navigation=%d", dtohs(navigation));
2809                break;
2810        }
2811    }
2812    if (screenSize != 0) {
2813        if (res.size() > 0) res.append("-");
2814        res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2815    }
2816    if (version != 0) {
2817        if (res.size() > 0) res.append("-");
2818        res.appendFormat("v%d", dtohs(sdkVersion));
2819        if (minorVersion != 0) {
2820            res.appendFormat(".%d", dtohs(minorVersion));
2821        }
2822    }
2823
2824    return res;
2825}
2826
2827// --------------------------------------------------------------------
2828// --------------------------------------------------------------------
2829// --------------------------------------------------------------------
2830
2831struct ResTable::Header
2832{
2833    Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
2834        resourceIDMap(NULL), resourceIDMapSize(0) { }
2835
2836    ~Header()
2837    {
2838        free(resourceIDMap);
2839    }
2840
2841    const ResTable* const           owner;
2842    void*                           ownedData;
2843    const ResTable_header*          header;
2844    size_t                          size;
2845    const uint8_t*                  dataEnd;
2846    size_t                          index;
2847    int32_t                         cookie;
2848
2849    ResStringPool                   values;
2850    uint32_t*                       resourceIDMap;
2851    size_t                          resourceIDMapSize;
2852};
2853
2854struct ResTable::Entry {
2855    ResTable_config config;
2856    const ResTable_entry* entry;
2857    const ResTable_type* type;
2858    uint32_t specFlags;
2859    const Package* package;
2860
2861    StringPoolRef typeStr;
2862    StringPoolRef keyStr;
2863};
2864
2865struct ResTable::Type
2866{
2867    Type(const Header* _header, const Package* _package, size_t count)
2868        : header(_header), package(_package), entryCount(count),
2869          typeSpec(NULL), typeSpecFlags(NULL) { }
2870    const Header* const             header;
2871    const Package* const            package;
2872    const size_t                    entryCount;
2873    const ResTable_typeSpec*        typeSpec;
2874    const uint32_t*                 typeSpecFlags;
2875    IdmapEntries                    idmapEntries;
2876    Vector<const ResTable_type*>    configs;
2877};
2878
2879struct ResTable::Package
2880{
2881    Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
2882        : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
2883        if (dtohs(package->header.headerSize) == sizeof(package)) {
2884            // The package structure is the same size as the definition.
2885            // This means it contains the typeIdOffset field.
2886            typeIdOffset = package->typeIdOffset;
2887        }
2888    }
2889
2890    const ResTable* const           owner;
2891    const Header* const             header;
2892    const ResTable_package* const   package;
2893
2894    ResStringPool                   typeStrings;
2895    ResStringPool                   keyStrings;
2896
2897    size_t                          typeIdOffset;
2898};
2899
2900// A group of objects describing a particular resource package.
2901// The first in 'package' is always the root object (from the resource
2902// table that defined the package); the ones after are skins on top of it.
2903struct ResTable::PackageGroup
2904{
2905    PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
2906        : owner(_owner)
2907        , name(_name)
2908        , id(_id)
2909        , largestTypeId(0)
2910        , bags(NULL)
2911        , dynamicRefTable(static_cast<uint8_t>(_id))
2912    { }
2913
2914    ~PackageGroup() {
2915        clearBagCache();
2916        const size_t numTypes = types.size();
2917        for (size_t i = 0; i < numTypes; i++) {
2918            const TypeList& typeList = types[i];
2919            const size_t numInnerTypes = typeList.size();
2920            for (size_t j = 0; j < numInnerTypes; j++) {
2921                if (typeList[j]->package->owner == owner) {
2922                    delete typeList[j];
2923                }
2924            }
2925        }
2926
2927        const size_t N = packages.size();
2928        for (size_t i=0; i<N; i++) {
2929            Package* pkg = packages[i];
2930            if (pkg->owner == owner) {
2931                delete pkg;
2932            }
2933        }
2934    }
2935
2936    void clearBagCache() {
2937        if (bags) {
2938            TABLE_NOISY(printf("bags=%p\n", bags));
2939            for (size_t i = 0; i < bags->size(); i++) {
2940                TABLE_NOISY(printf("type=%d\n", i));
2941                const TypeList& typeList = types[i];
2942                if (!typeList.isEmpty()) {
2943                    bag_set** typeBags = bags->get(i);
2944                    TABLE_NOISY(printf("typeBags=%p\n", typeBags));
2945                    if (typeBags) {
2946                        const size_t N = typeList[0]->entryCount;
2947                        TABLE_NOISY(printf("type->entryCount=%x\n", N));
2948                        for (size_t j=0; j<N; j++) {
2949                            if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
2950                                free(typeBags[j]);
2951                        }
2952                        free(typeBags);
2953                    }
2954                }
2955            }
2956            delete bags;
2957            bags = NULL;
2958        }
2959    }
2960
2961    ssize_t findType16(const char16_t* type, size_t len) const {
2962        const size_t N = packages.size();
2963        for (size_t i = 0; i < N; i++) {
2964            ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
2965            if (index >= 0) {
2966                return index + packages[i]->typeIdOffset;
2967            }
2968        }
2969        return -1;
2970    }
2971
2972    const ResTable* const           owner;
2973    String16 const                  name;
2974    uint32_t const                  id;
2975
2976    // This is mainly used to keep track of the loaded packages
2977    // and to clean them up properly. Accessing resources happens from
2978    // the 'types' array.
2979    Vector<Package*>                packages;
2980
2981    ByteBucketArray<TypeList>       types;
2982
2983    uint8_t                         largestTypeId;
2984
2985    // Computed attribute bags, first indexed by the type and second
2986    // by the entry in that type.
2987    ByteBucketArray<bag_set**>*     bags;
2988
2989    // The table mapping dynamic references to resolved references for
2990    // this package group.
2991    // TODO: We may be able to support dynamic references in overlays
2992    // by having these tables in a per-package scope rather than
2993    // per-package-group.
2994    DynamicRefTable                 dynamicRefTable;
2995};
2996
2997struct ResTable::bag_set
2998{
2999    size_t numAttrs;    // number in array
3000    size_t availAttrs;  // total space in array
3001    uint32_t typeSpecFlags;
3002    // Followed by 'numAttr' bag_entry structures.
3003};
3004
3005ResTable::Theme::Theme(const ResTable& table)
3006    : mTable(table)
3007{
3008    memset(mPackages, 0, sizeof(mPackages));
3009}
3010
3011ResTable::Theme::~Theme()
3012{
3013    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3014        package_info* pi = mPackages[i];
3015        if (pi != NULL) {
3016            free_package(pi);
3017        }
3018    }
3019}
3020
3021void ResTable::Theme::free_package(package_info* pi)
3022{
3023    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3024        theme_entry* te = pi->types[j].entries;
3025        if (te != NULL) {
3026            free(te);
3027        }
3028    }
3029    free(pi);
3030}
3031
3032ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3033{
3034    package_info* newpi = (package_info*)malloc(sizeof(package_info));
3035    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3036        size_t cnt = pi->types[j].numEntries;
3037        newpi->types[j].numEntries = cnt;
3038        theme_entry* te = pi->types[j].entries;
3039        if (te != NULL) {
3040            theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3041            newpi->types[j].entries = newte;
3042            memcpy(newte, te, cnt*sizeof(theme_entry));
3043        } else {
3044            newpi->types[j].entries = NULL;
3045        }
3046    }
3047    return newpi;
3048}
3049
3050status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3051{
3052    const bag_entry* bag;
3053    uint32_t bagTypeSpecFlags = 0;
3054    mTable.lock();
3055    const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3056    TABLE_NOISY(ALOGV("Applying style 0x%08x to theme %p, count=%d", resID, this, N));
3057    if (N < 0) {
3058        mTable.unlock();
3059        return N;
3060    }
3061
3062    uint32_t curPackage = 0xffffffff;
3063    ssize_t curPackageIndex = 0;
3064    package_info* curPI = NULL;
3065    uint32_t curType = 0xffffffff;
3066    size_t numEntries = 0;
3067    theme_entry* curEntries = NULL;
3068
3069    const bag_entry* end = bag + N;
3070    while (bag < end) {
3071        const uint32_t attrRes = bag->map.name.ident;
3072        const uint32_t p = Res_GETPACKAGE(attrRes);
3073        const uint32_t t = Res_GETTYPE(attrRes);
3074        const uint32_t e = Res_GETENTRY(attrRes);
3075
3076        if (curPackage != p) {
3077            const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3078            if (pidx < 0) {
3079                ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3080                bag++;
3081                continue;
3082            }
3083            curPackage = p;
3084            curPackageIndex = pidx;
3085            curPI = mPackages[pidx];
3086            if (curPI == NULL) {
3087                PackageGroup* const grp = mTable.mPackageGroups[pidx];
3088                curPI = (package_info*)malloc(sizeof(package_info));
3089                memset(curPI, 0, sizeof(*curPI));
3090                mPackages[pidx] = curPI;
3091            }
3092            curType = 0xffffffff;
3093        }
3094        if (curType != t) {
3095            if (t > Res_MAXTYPE) {
3096                ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3097                bag++;
3098                continue;
3099            }
3100            curType = t;
3101            curEntries = curPI->types[t].entries;
3102            if (curEntries == NULL) {
3103                PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3104                const TypeList& typeList = grp->types[t];
3105                int cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3106                curEntries = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3107                memset(curEntries, Res_value::TYPE_NULL, cnt*sizeof(theme_entry));
3108                curPI->types[t].numEntries = cnt;
3109                curPI->types[t].entries = curEntries;
3110            }
3111            numEntries = curPI->types[t].numEntries;
3112        }
3113        if (e >= numEntries) {
3114            ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3115            bag++;
3116            continue;
3117        }
3118        theme_entry* curEntry = curEntries + e;
3119        TABLE_NOISY(ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3120                attrRes, bag->map.value.dataType, bag->map.value.data,
3121                curEntry->value.dataType));
3122        if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
3123            curEntry->stringBlock = bag->stringBlock;
3124            curEntry->typeSpecFlags |= bagTypeSpecFlags;
3125            curEntry->value = bag->map.value;
3126        }
3127
3128        bag++;
3129    }
3130
3131    mTable.unlock();
3132
3133    //ALOGI("Applying style 0x%08x (force=%d)  theme %p...\n", resID, force, this);
3134    //dumpToLog();
3135
3136    return NO_ERROR;
3137}
3138
3139status_t ResTable::Theme::setTo(const Theme& other)
3140{
3141    //ALOGI("Setting theme %p from theme %p...\n", this, &other);
3142    //dumpToLog();
3143    //other.dumpToLog();
3144
3145    if (&mTable == &other.mTable) {
3146        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3147            if (mPackages[i] != NULL) {
3148                free_package(mPackages[i]);
3149            }
3150            if (other.mPackages[i] != NULL) {
3151                mPackages[i] = copy_package(other.mPackages[i]);
3152            } else {
3153                mPackages[i] = NULL;
3154            }
3155        }
3156    } else {
3157        // @todo: need to really implement this, not just copy
3158        // the system package (which is still wrong because it isn't
3159        // fixing up resource references).
3160        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3161            if (mPackages[i] != NULL) {
3162                free_package(mPackages[i]);
3163            }
3164            if (i == 0 && other.mPackages[i] != NULL) {
3165                mPackages[i] = copy_package(other.mPackages[i]);
3166            } else {
3167                mPackages[i] = NULL;
3168            }
3169        }
3170    }
3171
3172    //ALOGI("Final theme:");
3173    //dumpToLog();
3174
3175    return NO_ERROR;
3176}
3177
3178ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3179        uint32_t* outTypeSpecFlags) const
3180{
3181    int cnt = 20;
3182
3183    if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3184
3185    do {
3186        const ssize_t p = mTable.getResourcePackageIndex(resID);
3187        const uint32_t t = Res_GETTYPE(resID);
3188        const uint32_t e = Res_GETENTRY(resID);
3189
3190        TABLE_THEME(ALOGI("Looking up attr 0x%08x in theme %p", resID, this));
3191
3192        if (p >= 0) {
3193            const package_info* const pi = mPackages[p];
3194            TABLE_THEME(ALOGI("Found package: %p", pi));
3195            if (pi != NULL) {
3196                TABLE_THEME(ALOGI("Desired type index is %ld in avail %d", t, Res_MAXTYPE + 1));
3197                if (t <= Res_MAXTYPE) {
3198                    const type_info& ti = pi->types[t];
3199                    TABLE_THEME(ALOGI("Desired entry index is %ld in avail %d", e, ti.numEntries));
3200                    if (e < ti.numEntries) {
3201                        const theme_entry& te = ti.entries[e];
3202                        if (outTypeSpecFlags != NULL) {
3203                            *outTypeSpecFlags |= te.typeSpecFlags;
3204                        }
3205                        TABLE_THEME(ALOGI("Theme value: type=0x%x, data=0x%08x",
3206                                te.value.dataType, te.value.data));
3207                        const uint8_t type = te.value.dataType;
3208                        if (type == Res_value::TYPE_ATTRIBUTE) {
3209                            if (cnt > 0) {
3210                                cnt--;
3211                                resID = te.value.data;
3212                                continue;
3213                            }
3214                            ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3215                            return BAD_INDEX;
3216                        } else if (type != Res_value::TYPE_NULL) {
3217                            *outValue = te.value;
3218                            return te.stringBlock;
3219                        }
3220                        return BAD_INDEX;
3221                    }
3222                }
3223            }
3224        }
3225        break;
3226
3227    } while (true);
3228
3229    return BAD_INDEX;
3230}
3231
3232ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3233        ssize_t blockIndex, uint32_t* outLastRef,
3234        uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3235{
3236    //printf("Resolving type=0x%x\n", inOutValue->dataType);
3237    if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3238        uint32_t newTypeSpecFlags;
3239        blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3240        TABLE_THEME(ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=%p\n",
3241             (int)blockIndex, (int)inOutValue->dataType, (void*)inOutValue->data));
3242        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3243        //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3244        if (blockIndex < 0) {
3245            return blockIndex;
3246        }
3247    }
3248    return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3249            inoutTypeSpecFlags, inoutConfig);
3250}
3251
3252void ResTable::Theme::dumpToLog() const
3253{
3254    ALOGI("Theme %p:\n", this);
3255    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3256        package_info* pi = mPackages[i];
3257        if (pi == NULL) continue;
3258
3259        ALOGI("  Package #0x%02x:\n", (int)(i + 1));
3260        for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3261            type_info& ti = pi->types[j];
3262            if (ti.numEntries == 0) continue;
3263            ALOGI("    Type #0x%02x:\n", (int)(j + 1));
3264            for (size_t k = 0; k < ti.numEntries; k++) {
3265                const theme_entry& te = ti.entries[k];
3266                if (te.value.dataType == Res_value::TYPE_NULL) continue;
3267                ALOGI("      0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3268                     (int)Res_MAKEID(i, j, k),
3269                     te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3270            }
3271        }
3272    }
3273}
3274
3275ResTable::ResTable()
3276    : mError(NO_INIT), mNextPackageId(2)
3277{
3278    memset(&mParams, 0, sizeof(mParams));
3279    memset(mPackageMap, 0, sizeof(mPackageMap));
3280    //ALOGI("Creating ResTable %p\n", this);
3281}
3282
3283ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3284    : mError(NO_INIT), mNextPackageId(2)
3285{
3286    memset(&mParams, 0, sizeof(mParams));
3287    memset(mPackageMap, 0, sizeof(mPackageMap));
3288    addInternal(data, size, NULL, 0, cookie, copyData);
3289    LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3290    //ALOGI("Creating ResTable %p\n", this);
3291}
3292
3293ResTable::~ResTable()
3294{
3295    //ALOGI("Destroying ResTable in %p\n", this);
3296    uninit();
3297}
3298
3299inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3300{
3301    return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3302}
3303
3304status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3305    return addInternal(data, size, NULL, 0, cookie, copyData);
3306}
3307
3308status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3309        const int32_t cookie, bool copyData) {
3310    return addInternal(data, size, idmapData, idmapDataSize, cookie, copyData);
3311}
3312
3313status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
3314    const void* data = asset->getBuffer(true);
3315    if (data == NULL) {
3316        ALOGW("Unable to get buffer of resource asset file");
3317        return UNKNOWN_ERROR;
3318    }
3319
3320    return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, 0, cookie, copyData);
3321}
3322
3323status_t ResTable::add(Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData) {
3324    const void* data = asset->getBuffer(true);
3325    if (data == NULL) {
3326        ALOGW("Unable to get buffer of resource asset file");
3327        return UNKNOWN_ERROR;
3328    }
3329
3330    size_t idmapSize = 0;
3331    const void* idmapData = NULL;
3332    if (idmapAsset != NULL) {
3333        idmapData = idmapAsset->getBuffer(true);
3334        if (idmapData == NULL) {
3335            ALOGW("Unable to get buffer of idmap asset file");
3336            return UNKNOWN_ERROR;
3337        }
3338        idmapSize = static_cast<size_t>(idmapAsset->getLength());
3339    }
3340
3341    return addInternal(data, static_cast<size_t>(asset->getLength()),
3342            idmapData, idmapSize, cookie, copyData);
3343}
3344
3345status_t ResTable::add(ResTable* src)
3346{
3347    mError = src->mError;
3348
3349    for (size_t i=0; i<src->mHeaders.size(); i++) {
3350        mHeaders.add(src->mHeaders[i]);
3351    }
3352
3353    for (size_t i=0; i<src->mPackageGroups.size(); i++) {
3354        PackageGroup* srcPg = src->mPackageGroups[i];
3355        PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
3356        for (size_t j=0; j<srcPg->packages.size(); j++) {
3357            pg->packages.add(srcPg->packages[j]);
3358        }
3359
3360        for (size_t j = 0; j < srcPg->types.size(); j++) {
3361            if (srcPg->types[j].isEmpty()) {
3362                continue;
3363            }
3364
3365            TypeList& typeList = pg->types.editItemAt(j);
3366            typeList.appendVector(srcPg->types[j]);
3367        }
3368        pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
3369        pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
3370        mPackageGroups.add(pg);
3371    }
3372
3373    memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
3374
3375    return mError;
3376}
3377
3378status_t ResTable::addEmpty(const int32_t cookie) {
3379    Header* header = new Header(this);
3380    header->index = mHeaders.size();
3381    header->cookie = cookie;
3382    header->values.setToEmpty();
3383    header->ownedData = calloc(1, sizeof(ResTable_header));
3384
3385    ResTable_header* resHeader = (ResTable_header*) header->ownedData;
3386    resHeader->header.type = RES_TABLE_TYPE;
3387    resHeader->header.headerSize = sizeof(ResTable_header);
3388    resHeader->header.size = sizeof(ResTable_header);
3389
3390    header->header = (const ResTable_header*) resHeader;
3391    mHeaders.add(header);
3392    return (mError=NO_ERROR);
3393}
3394
3395status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
3396        const int32_t cookie, bool copyData)
3397{
3398    if (!data) {
3399        return NO_ERROR;
3400    }
3401
3402    if (dataSize < sizeof(ResTable_header)) {
3403        ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
3404                (int) dataSize, (int) sizeof(ResTable_header));
3405        return UNKNOWN_ERROR;
3406    }
3407
3408    Header* header = new Header(this);
3409    header->index = mHeaders.size();
3410    header->cookie = cookie;
3411    if (idmapData != NULL) {
3412        header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
3413        if (header->resourceIDMap == NULL) {
3414            delete header;
3415            return (mError = NO_MEMORY);
3416        }
3417        memcpy(header->resourceIDMap, idmapData, idmapDataSize);
3418        header->resourceIDMapSize = idmapDataSize;
3419    }
3420    mHeaders.add(header);
3421
3422    const bool notDeviceEndian = htods(0xf0) != 0xf0;
3423
3424    LOAD_TABLE_NOISY(
3425        ALOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%d, copy=%d "
3426             "idmap=%p\n", data, dataSize, cookie, copyData, idmap));
3427
3428    if (copyData || notDeviceEndian) {
3429        header->ownedData = malloc(dataSize);
3430        if (header->ownedData == NULL) {
3431            return (mError=NO_MEMORY);
3432        }
3433        memcpy(header->ownedData, data, dataSize);
3434        data = header->ownedData;
3435    }
3436
3437    header->header = (const ResTable_header*)data;
3438    header->size = dtohl(header->header->header.size);
3439    //ALOGI("Got size 0x%x, again size 0x%x, raw size 0x%x\n", header->size,
3440    //     dtohl(header->header->header.size), header->header->header.size);
3441    LOAD_TABLE_NOISY(ALOGV("Loading ResTable @%p:\n", header->header));
3442    if (dtohs(header->header->header.headerSize) > header->size
3443            || header->size > dataSize) {
3444        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
3445             (int)dtohs(header->header->header.headerSize),
3446             (int)header->size, (int)dataSize);
3447        return (mError=BAD_TYPE);
3448    }
3449    if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
3450        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
3451             (int)dtohs(header->header->header.headerSize),
3452             (int)header->size);
3453        return (mError=BAD_TYPE);
3454    }
3455    header->dataEnd = ((const uint8_t*)header->header) + header->size;
3456
3457    // Iterate through all chunks.
3458    size_t curPackage = 0;
3459
3460    const ResChunk_header* chunk =
3461        (const ResChunk_header*)(((const uint8_t*)header->header)
3462                                 + dtohs(header->header->header.headerSize));
3463    while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
3464           ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
3465        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
3466        if (err != NO_ERROR) {
3467            return (mError=err);
3468        }
3469        TABLE_NOISY(ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
3470                     dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
3471                     (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
3472        const size_t csize = dtohl(chunk->size);
3473        const uint16_t ctype = dtohs(chunk->type);
3474        if (ctype == RES_STRING_POOL_TYPE) {
3475            if (header->values.getError() != NO_ERROR) {
3476                // Only use the first string chunk; ignore any others that
3477                // may appear.
3478                status_t err = header->values.setTo(chunk, csize);
3479                if (err != NO_ERROR) {
3480                    return (mError=err);
3481                }
3482            } else {
3483                ALOGW("Multiple string chunks found in resource table.");
3484            }
3485        } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
3486            if (curPackage >= dtohl(header->header->packageCount)) {
3487                ALOGW("More package chunks were found than the %d declared in the header.",
3488                     dtohl(header->header->packageCount));
3489                return (mError=BAD_TYPE);
3490            }
3491
3492            if (parsePackage((ResTable_package*)chunk, header) != NO_ERROR) {
3493                return mError;
3494            }
3495            curPackage++;
3496        } else {
3497            ALOGW("Unknown chunk type 0x%x in table at %p.\n",
3498                 ctype,
3499                 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3500        }
3501        chunk = (const ResChunk_header*)
3502            (((const uint8_t*)chunk) + csize);
3503    }
3504
3505    if (curPackage < dtohl(header->header->packageCount)) {
3506        ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
3507             (int)curPackage, dtohl(header->header->packageCount));
3508        return (mError=BAD_TYPE);
3509    }
3510    mError = header->values.getError();
3511    if (mError != NO_ERROR) {
3512        ALOGW("No string values found in resource table!");
3513    }
3514
3515    TABLE_NOISY(ALOGV("Returning from add with mError=%d\n", mError));
3516    return mError;
3517}
3518
3519status_t ResTable::getError() const
3520{
3521    return mError;
3522}
3523
3524void ResTable::uninit()
3525{
3526    mError = NO_INIT;
3527    size_t N = mPackageGroups.size();
3528    for (size_t i=0; i<N; i++) {
3529        PackageGroup* g = mPackageGroups[i];
3530        delete g;
3531    }
3532    N = mHeaders.size();
3533    for (size_t i=0; i<N; i++) {
3534        Header* header = mHeaders[i];
3535        if (header->owner == this) {
3536            if (header->ownedData) {
3537                free(header->ownedData);
3538            }
3539            delete header;
3540        }
3541    }
3542
3543    mPackageGroups.clear();
3544    mHeaders.clear();
3545}
3546
3547bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
3548{
3549    if (mError != NO_ERROR) {
3550        return false;
3551    }
3552
3553    const ssize_t p = getResourcePackageIndex(resID);
3554    const int t = Res_GETTYPE(resID);
3555    const int e = Res_GETENTRY(resID);
3556
3557    if (p < 0) {
3558        if (Res_GETPACKAGE(resID)+1 == 0) {
3559            ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
3560        } else {
3561            ALOGW("No known package when getting name for resource number 0x%08x", resID);
3562        }
3563        return false;
3564    }
3565    if (t < 0) {
3566        ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
3567        return false;
3568    }
3569
3570    const PackageGroup* const grp = mPackageGroups[p];
3571    if (grp == NULL) {
3572        ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
3573        return false;
3574    }
3575
3576    Entry entry;
3577    status_t err = getEntry(grp, t, e, NULL, &entry);
3578    if (err != NO_ERROR) {
3579        return false;
3580    }
3581
3582    outName->package = grp->name.string();
3583    outName->packageLen = grp->name.size();
3584    if (allowUtf8) {
3585        outName->type8 = entry.typeStr.string8(&outName->typeLen);
3586        outName->name8 = entry.keyStr.string8(&outName->nameLen);
3587    } else {
3588        outName->type8 = NULL;
3589        outName->name8 = NULL;
3590    }
3591    if (outName->type8 == NULL) {
3592        outName->type = entry.typeStr.string16(&outName->typeLen);
3593        // If we have a bad index for some reason, we should abort.
3594        if (outName->type == NULL) {
3595            return false;
3596        }
3597    }
3598    if (outName->name8 == NULL) {
3599        outName->name = entry.keyStr.string16(&outName->nameLen);
3600        // If we have a bad index for some reason, we should abort.
3601        if (outName->name == NULL) {
3602            return false;
3603        }
3604    }
3605
3606    return true;
3607}
3608
3609ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
3610        uint32_t* outSpecFlags, ResTable_config* outConfig) const
3611{
3612    if (mError != NO_ERROR) {
3613        return mError;
3614    }
3615
3616    const ssize_t p = getResourcePackageIndex(resID);
3617    const int t = Res_GETTYPE(resID);
3618    const int e = Res_GETENTRY(resID);
3619
3620    if (p < 0) {
3621        if (Res_GETPACKAGE(resID)+1 == 0) {
3622            ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
3623        } else {
3624            ALOGW("No known package when getting value for resource number 0x%08x", resID);
3625        }
3626        return BAD_INDEX;
3627    }
3628    if (t < 0) {
3629        ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
3630        return BAD_INDEX;
3631    }
3632
3633    const PackageGroup* const grp = mPackageGroups[p];
3634    if (grp == NULL) {
3635        ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
3636        return BAD_INDEX;
3637    }
3638
3639    // Allow overriding density
3640    ResTable_config desiredConfig = mParams;
3641    if (density > 0) {
3642        desiredConfig.density = density;
3643    }
3644
3645    Entry entry;
3646    status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
3647    if (err != NO_ERROR) {
3648        ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
3649                resID, t, e, err);
3650        return err;
3651    }
3652
3653    if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
3654        if (!mayBeBag) {
3655            ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
3656        }
3657        return BAD_VALUE;
3658    }
3659
3660    const Res_value* value = reinterpret_cast<const Res_value*>(
3661            reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
3662
3663    outValue->size = dtohs(value->size);
3664    outValue->res0 = value->res0;
3665    outValue->dataType = value->dataType;
3666    outValue->data = dtohl(value->data);
3667
3668    // The reference may be pointing to a resource in a shared library. These
3669    // references have build-time generated package IDs. These ids may not match
3670    // the actual package IDs of the corresponding packages in this ResTable.
3671    // We need to fix the package ID based on a mapping.
3672    if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
3673        ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
3674        return BAD_VALUE;
3675    }
3676
3677    TABLE_NOISY(size_t len;
3678          printf("Found value: pkg=%d, type=%d, str=%s, int=%d\n",
3679                 entry.package->header->index,
3680                 outValue->dataType,
3681                 outValue->dataType == Res_value::TYPE_STRING
3682                 ? String8(entry.package->header->values.stringAt(
3683                     outValue->data, &len)).string()
3684                 : "",
3685                 outValue->data));
3686
3687    if (outSpecFlags != NULL) {
3688        *outSpecFlags = entry.specFlags;
3689    }
3690
3691    if (outConfig != NULL) {
3692        *outConfig = entry.config;
3693    }
3694
3695    return entry.package->header->index;
3696}
3697
3698ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3699        uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3700        ResTable_config* outConfig) const
3701{
3702    int count=0;
3703    while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
3704            && value->data != 0 && count < 20) {
3705        if (outLastRef) *outLastRef = value->data;
3706        uint32_t lastRef = value->data;
3707        uint32_t newFlags = 0;
3708        const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3709                outConfig);
3710        if (newIndex == BAD_INDEX) {
3711            return BAD_INDEX;
3712        }
3713        TABLE_THEME(ALOGI("Resolving reference %p: newIndex=%d, type=0x%x, data=%p\n",
3714             (void*)lastRef, (int)newIndex, (int)value->dataType, (void*)value->data));
3715        //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3716        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3717        if (newIndex < 0) {
3718            // This can fail if the resource being referenced is a style...
3719            // in this case, just return the reference, and expect the
3720            // caller to deal with.
3721            return blockIndex;
3722        }
3723        blockIndex = newIndex;
3724        count++;
3725    }
3726    return blockIndex;
3727}
3728
3729const char16_t* ResTable::valueToString(
3730    const Res_value* value, size_t stringBlock,
3731    char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
3732{
3733    if (!value) {
3734        return NULL;
3735    }
3736    if (value->dataType == value->TYPE_STRING) {
3737        return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
3738    }
3739    // XXX do int to string conversions.
3740    return NULL;
3741}
3742
3743ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
3744{
3745    mLock.lock();
3746    ssize_t err = getBagLocked(resID, outBag);
3747    if (err < NO_ERROR) {
3748        //printf("*** get failed!  unlocking\n");
3749        mLock.unlock();
3750    }
3751    return err;
3752}
3753
3754void ResTable::unlockBag(const bag_entry* /*bag*/) const
3755{
3756    //printf("<<< unlockBag %p\n", this);
3757    mLock.unlock();
3758}
3759
3760void ResTable::lock() const
3761{
3762    mLock.lock();
3763}
3764
3765void ResTable::unlock() const
3766{
3767    mLock.unlock();
3768}
3769
3770ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
3771        uint32_t* outTypeSpecFlags) const
3772{
3773    if (mError != NO_ERROR) {
3774        return mError;
3775    }
3776
3777    const ssize_t p = getResourcePackageIndex(resID);
3778    const int t = Res_GETTYPE(resID);
3779    const int e = Res_GETENTRY(resID);
3780
3781    if (p < 0) {
3782        ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
3783        return BAD_INDEX;
3784    }
3785    if (t < 0) {
3786        ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
3787        return BAD_INDEX;
3788    }
3789
3790    //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
3791    PackageGroup* const grp = mPackageGroups[p];
3792    if (grp == NULL) {
3793        ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
3794        return BAD_INDEX;
3795    }
3796
3797    const TypeList& typeConfigs = grp->types[t];
3798    if (typeConfigs.isEmpty()) {
3799        ALOGW("Type identifier 0x%x does not exist.", t+1);
3800        return BAD_INDEX;
3801    }
3802
3803    const size_t NENTRY = typeConfigs[0]->entryCount;
3804    if (e >= (int)NENTRY) {
3805        ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
3806             e, (int)typeConfigs[0]->entryCount);
3807        return BAD_INDEX;
3808    }
3809
3810    // First see if we've already computed this bag...
3811    if (grp->bags) {
3812        bag_set** typeSet = grp->bags->get(t);
3813        if (typeSet) {
3814            bag_set* set = typeSet[e];
3815            if (set) {
3816                if (set != (bag_set*)0xFFFFFFFF) {
3817                    if (outTypeSpecFlags != NULL) {
3818                        *outTypeSpecFlags = set->typeSpecFlags;
3819                    }
3820                    *outBag = (bag_entry*)(set+1);
3821                    //ALOGI("Found existing bag for: %p\n", (void*)resID);
3822                    return set->numAttrs;
3823                }
3824                ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
3825                     resID);
3826                return BAD_INDEX;
3827            }
3828        }
3829    }
3830
3831    // Bag not found, we need to compute it!
3832    if (!grp->bags) {
3833        grp->bags = new ByteBucketArray<bag_set**>();
3834        if (!grp->bags) return NO_MEMORY;
3835    }
3836
3837    bag_set** typeSet = grp->bags->get(t);
3838    if (!typeSet) {
3839        typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
3840        if (!typeSet) return NO_MEMORY;
3841        grp->bags->set(t, typeSet);
3842    }
3843
3844    // Mark that we are currently working on this one.
3845    typeSet[e] = (bag_set*)0xFFFFFFFF;
3846
3847    TABLE_NOISY(ALOGI("Building bag: %p\n", (void*)resID));
3848
3849    // Now collect all bag attributes
3850    Entry entry;
3851    status_t err = getEntry(grp, t, e, &mParams, &entry);
3852    if (err != NO_ERROR) {
3853        return err;
3854    }
3855
3856    const uint16_t entrySize = dtohs(entry.entry->size);
3857    const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
3858        ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
3859    const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
3860        ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
3861
3862    size_t N = count;
3863
3864    TABLE_NOISY(ALOGI("Found map: size=%p parent=%p count=%d\n",
3865                     entrySize, parent, count));
3866
3867    // If this map inherits from another, we need to start
3868    // with its parent's values.  Otherwise start out empty.
3869    TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
3870                       entrySize, parent));
3871
3872    // This is what we are building.
3873    bag_set* set = NULL;
3874
3875    if (parent) {
3876        uint32_t resolvedParent = parent;
3877
3878        // Bags encode a parent reference without using the standard
3879        // Res_value structure. That means we must always try to
3880        // resolve a parent reference in case it is actually a
3881        // TYPE_DYNAMIC_REFERENCE.
3882        status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
3883        if (err != NO_ERROR) {
3884            ALOGE("Failed resolving bag parent id 0x%08x", parent);
3885            return UNKNOWN_ERROR;
3886        }
3887
3888        const bag_entry* parentBag;
3889        uint32_t parentTypeSpecFlags = 0;
3890        const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
3891        const size_t NT = ((NP >= 0) ? NP : 0) + N;
3892        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
3893        if (set == NULL) {
3894            return NO_MEMORY;
3895        }
3896        if (NP > 0) {
3897            memcpy(set+1, parentBag, NP*sizeof(bag_entry));
3898            set->numAttrs = NP;
3899            TABLE_NOISY(ALOGI("Initialized new bag with %d inherited attributes.\n", NP));
3900        } else {
3901            TABLE_NOISY(ALOGI("Initialized new bag with no inherited attributes.\n"));
3902            set->numAttrs = 0;
3903        }
3904        set->availAttrs = NT;
3905        set->typeSpecFlags = parentTypeSpecFlags;
3906    } else {
3907        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
3908        if (set == NULL) {
3909            return NO_MEMORY;
3910        }
3911        set->numAttrs = 0;
3912        set->availAttrs = N;
3913        set->typeSpecFlags = 0;
3914    }
3915
3916    set->typeSpecFlags |= entry.specFlags;
3917
3918    // Now merge in the new attributes...
3919    size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
3920        + dtohs(entry.entry->size);
3921    const ResTable_map* map;
3922    bag_entry* entries = (bag_entry*)(set+1);
3923    size_t curEntry = 0;
3924    uint32_t pos = 0;
3925    TABLE_NOISY(ALOGI("Starting with set %p, entries=%p, avail=%d\n",
3926                 set, entries, set->availAttrs));
3927    while (pos < count) {
3928        TABLE_NOISY(printf("Now at %p\n", (void*)curOff));
3929
3930        if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
3931            ALOGW("ResTable_map at %d is beyond type chunk data %d",
3932                 (int)curOff, dtohl(entry.type->header.size));
3933            return BAD_TYPE;
3934        }
3935        map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
3936        N++;
3937
3938        uint32_t newName = htodl(map->name.ident);
3939        if (!Res_INTERNALID(newName)) {
3940            // Attributes don't have a resource id as the name. They specify
3941            // other data, which would be wrong to change via a lookup.
3942            if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
3943                ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
3944                        (int) curOff, (int) newName);
3945                return UNKNOWN_ERROR;
3946            }
3947        }
3948
3949        bool isInside;
3950        uint32_t oldName = 0;
3951        while ((isInside=(curEntry < set->numAttrs))
3952                && (oldName=entries[curEntry].map.name.ident) < newName) {
3953            TABLE_NOISY(printf("#%d: Keeping existing attribute: 0x%08x\n",
3954                         curEntry, entries[curEntry].map.name.ident));
3955            curEntry++;
3956        }
3957
3958        if ((!isInside) || oldName != newName) {
3959            // This is a new attribute...  figure out what to do with it.
3960            if (set->numAttrs >= set->availAttrs) {
3961                // Need to alloc more memory...
3962                const size_t newAvail = set->availAttrs+N;
3963                set = (bag_set*)realloc(set,
3964                                        sizeof(bag_set)
3965                                        + sizeof(bag_entry)*newAvail);
3966                if (set == NULL) {
3967                    return NO_MEMORY;
3968                }
3969                set->availAttrs = newAvail;
3970                entries = (bag_entry*)(set+1);
3971                TABLE_NOISY(printf("Reallocated set %p, entries=%p, avail=%d\n",
3972                             set, entries, set->availAttrs));
3973            }
3974            if (isInside) {
3975                // Going in the middle, need to make space.
3976                memmove(entries+curEntry+1, entries+curEntry,
3977                        sizeof(bag_entry)*(set->numAttrs-curEntry));
3978                set->numAttrs++;
3979            }
3980            TABLE_NOISY(printf("#%d: Inserting new attribute: 0x%08x\n",
3981                         curEntry, newName));
3982        } else {
3983            TABLE_NOISY(printf("#%d: Replacing existing attribute: 0x%08x\n",
3984                         curEntry, oldName));
3985        }
3986
3987        bag_entry* cur = entries+curEntry;
3988
3989        cur->stringBlock = entry.package->header->index;
3990        cur->map.name.ident = newName;
3991        cur->map.value.copyFrom_dtoh(map->value);
3992        status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
3993        if (err != NO_ERROR) {
3994            ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
3995            return UNKNOWN_ERROR;
3996        }
3997
3998        TABLE_NOISY(printf("Setting entry #%d %p: block=%d, name=0x%08x, type=%d, data=0x%08x\n",
3999                     curEntry, cur, cur->stringBlock, cur->map.name.ident,
4000                     cur->map.value.dataType, cur->map.value.data));
4001
4002        // On to the next!
4003        curEntry++;
4004        pos++;
4005        const size_t size = dtohs(map->value.size);
4006        curOff += size + sizeof(*map)-sizeof(map->value);
4007    };
4008
4009    if (curEntry > set->numAttrs) {
4010        set->numAttrs = curEntry;
4011    }
4012
4013    // And this is it...
4014    typeSet[e] = set;
4015    if (set) {
4016        if (outTypeSpecFlags != NULL) {
4017            *outTypeSpecFlags = set->typeSpecFlags;
4018        }
4019        *outBag = (bag_entry*)(set+1);
4020        TABLE_NOISY(ALOGI("Returning %d attrs\n", set->numAttrs));
4021        return set->numAttrs;
4022    }
4023    return BAD_INDEX;
4024}
4025
4026void ResTable::setParameters(const ResTable_config* params)
4027{
4028    mLock.lock();
4029    TABLE_GETENTRY(ALOGI("Setting parameters: %s\n", params->toString().string()));
4030    mParams = *params;
4031    for (size_t i=0; i<mPackageGroups.size(); i++) {
4032        TABLE_NOISY(ALOGI("CLEARING BAGS FOR GROUP %d!", i));
4033        mPackageGroups[i]->clearBagCache();
4034    }
4035    mLock.unlock();
4036}
4037
4038void ResTable::getParameters(ResTable_config* params) const
4039{
4040    mLock.lock();
4041    *params = mParams;
4042    mLock.unlock();
4043}
4044
4045struct id_name_map {
4046    uint32_t id;
4047    size_t len;
4048    char16_t name[6];
4049};
4050
4051const static id_name_map ID_NAMES[] = {
4052    { ResTable_map::ATTR_TYPE,  5, { '^', 't', 'y', 'p', 'e' } },
4053    { ResTable_map::ATTR_L10N,  5, { '^', 'l', '1', '0', 'n' } },
4054    { ResTable_map::ATTR_MIN,   4, { '^', 'm', 'i', 'n' } },
4055    { ResTable_map::ATTR_MAX,   4, { '^', 'm', 'a', 'x' } },
4056    { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4057    { ResTable_map::ATTR_ZERO,  5, { '^', 'z', 'e', 'r', 'o' } },
4058    { ResTable_map::ATTR_ONE,   4, { '^', 'o', 'n', 'e' } },
4059    { ResTable_map::ATTR_TWO,   4, { '^', 't', 'w', 'o' } },
4060    { ResTable_map::ATTR_FEW,   4, { '^', 'f', 'e', 'w' } },
4061    { ResTable_map::ATTR_MANY,  5, { '^', 'm', 'a', 'n', 'y' } },
4062};
4063
4064uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4065                                     const char16_t* type, size_t typeLen,
4066                                     const char16_t* package,
4067                                     size_t packageLen,
4068                                     uint32_t* outTypeSpecFlags) const
4069{
4070    TABLE_SUPER_NOISY(printf("Identifier for name: error=%d\n", mError));
4071
4072    // Check for internal resource identifier as the very first thing, so
4073    // that we will always find them even when there are no resources.
4074    if (name[0] == '^') {
4075        const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4076        size_t len;
4077        for (int i=0; i<N; i++) {
4078            const id_name_map* m = ID_NAMES + i;
4079            len = m->len;
4080            if (len != nameLen) {
4081                continue;
4082            }
4083            for (size_t j=1; j<len; j++) {
4084                if (m->name[j] != name[j]) {
4085                    goto nope;
4086                }
4087            }
4088            if (outTypeSpecFlags) {
4089                *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4090            }
4091            return m->id;
4092nope:
4093            ;
4094        }
4095        if (nameLen > 7) {
4096            if (name[1] == 'i' && name[2] == 'n'
4097                && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4098                && name[6] == '_') {
4099                int index = atoi(String8(name + 7, nameLen - 7).string());
4100                if (Res_CHECKID(index)) {
4101                    ALOGW("Array resource index: %d is too large.",
4102                         index);
4103                    return 0;
4104                }
4105                if (outTypeSpecFlags) {
4106                    *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4107                }
4108                return  Res_MAKEARRAY(index);
4109            }
4110        }
4111        return 0;
4112    }
4113
4114    if (mError != NO_ERROR) {
4115        return 0;
4116    }
4117
4118    bool fakePublic = false;
4119
4120    // Figure out the package and type we are looking in...
4121
4122    const char16_t* packageEnd = NULL;
4123    const char16_t* typeEnd = NULL;
4124    const char16_t* const nameEnd = name+nameLen;
4125    const char16_t* p = name;
4126    while (p < nameEnd) {
4127        if (*p == ':') packageEnd = p;
4128        else if (*p == '/') typeEnd = p;
4129        p++;
4130    }
4131    if (*name == '@') {
4132        name++;
4133        if (*name == '*') {
4134            fakePublic = true;
4135            name++;
4136        }
4137    }
4138    if (name >= nameEnd) {
4139        return 0;
4140    }
4141
4142    if (packageEnd) {
4143        package = name;
4144        packageLen = packageEnd-name;
4145        name = packageEnd+1;
4146    } else if (!package) {
4147        return 0;
4148    }
4149
4150    if (typeEnd) {
4151        type = name;
4152        typeLen = typeEnd-name;
4153        name = typeEnd+1;
4154    } else if (!type) {
4155        return 0;
4156    }
4157
4158    if (name >= nameEnd) {
4159        return 0;
4160    }
4161    nameLen = nameEnd-name;
4162
4163    TABLE_NOISY(printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4164                 String8(type, typeLen).string(),
4165                 String8(name, nameLen).string(),
4166                 String8(package, packageLen).string()));
4167
4168    const size_t NG = mPackageGroups.size();
4169    for (size_t ig=0; ig<NG; ig++) {
4170        const PackageGroup* group = mPackageGroups[ig];
4171
4172        if (strzcmp16(package, packageLen,
4173                      group->name.string(), group->name.size())) {
4174            TABLE_NOISY(printf("Skipping package group: %s\n", String8(group->name).string()));
4175            continue;
4176        }
4177
4178        const size_t packageCount = group->packages.size();
4179        for (size_t pi = 0; pi < packageCount; pi++) {
4180            ssize_t ti = group->packages[pi]->typeStrings.indexOfString(type, typeLen);
4181            if (ti < 0) {
4182                continue;
4183            }
4184
4185            ti += group->packages[pi]->typeIdOffset;
4186
4187            const TypeList& typeList = group->types[ti];
4188            if (typeList.isEmpty()) {
4189                TABLE_NOISY(printf("Expected type structure not found in package %s for index %d\n",
4190                                   String8(group->name).string(), ti));
4191                continue;
4192            }
4193
4194            const size_t typeCount = typeList.size();
4195            for (size_t i = 0; i < typeCount; i++) {
4196                const Type* t = typeList[i];
4197                const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4198                if (ei < 0) {
4199                    continue;
4200                }
4201
4202                const size_t configCount = t->configs.size();
4203                for (size_t j = 0; j < configCount; j++) {
4204                    const TypeVariant tv(t->configs[j]);
4205                    for (TypeVariant::iterator iter = tv.beginEntries();
4206                         iter != tv.endEntries();
4207                         iter++) {
4208                        const ResTable_entry* entry = *iter;
4209                        if (entry == NULL) {
4210                            continue;
4211                        }
4212
4213                        if (dtohl(entry->key.index) == (size_t) ei) {
4214                            uint32_t resId = Res_MAKEID(group->id - 1, ti, iter.index());
4215                            if (outTypeSpecFlags) {
4216                                Entry result;
4217                                if (getEntry(group, ti, iter.index(), NULL, &result) != NO_ERROR) {
4218                                    ALOGW("Failed to find spec flags for %s:%s/%s (0x%08x)",
4219                                            String8(group->name).string(),
4220                                            String8(String16(type, typeLen)).string(),
4221                                            String8(String16(name, nameLen)).string(),
4222                                            resId);
4223                                    return 0;
4224                                }
4225                                *outTypeSpecFlags = result.specFlags;
4226
4227                                if (fakePublic) {
4228                                    *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4229                                }
4230                            }
4231                            return resId;
4232                        }
4233                    }
4234                }
4235            }
4236        }
4237        break;
4238    }
4239    return 0;
4240}
4241
4242bool ResTable::expandResourceRef(const char16_t* refStr, size_t refLen,
4243                                 String16* outPackage,
4244                                 String16* outType,
4245                                 String16* outName,
4246                                 const String16* defType,
4247                                 const String16* defPackage,
4248                                 const char** outErrorMsg,
4249                                 bool* outPublicOnly)
4250{
4251    const char16_t* packageEnd = NULL;
4252    const char16_t* typeEnd = NULL;
4253    const char16_t* p = refStr;
4254    const char16_t* const end = p + refLen;
4255    while (p < end) {
4256        if (*p == ':') packageEnd = p;
4257        else if (*p == '/') {
4258            typeEnd = p;
4259            break;
4260        }
4261        p++;
4262    }
4263    p = refStr;
4264    if (*p == '@') p++;
4265
4266    if (outPublicOnly != NULL) {
4267        *outPublicOnly = true;
4268    }
4269    if (*p == '*') {
4270        p++;
4271        if (outPublicOnly != NULL) {
4272            *outPublicOnly = false;
4273        }
4274    }
4275
4276    if (packageEnd) {
4277        *outPackage = String16(p, packageEnd-p);
4278        p = packageEnd+1;
4279    } else {
4280        if (!defPackage) {
4281            if (outErrorMsg) {
4282                *outErrorMsg = "No resource package specified";
4283            }
4284            return false;
4285        }
4286        *outPackage = *defPackage;
4287    }
4288    if (typeEnd) {
4289        *outType = String16(p, typeEnd-p);
4290        p = typeEnd+1;
4291    } else {
4292        if (!defType) {
4293            if (outErrorMsg) {
4294                *outErrorMsg = "No resource type specified";
4295            }
4296            return false;
4297        }
4298        *outType = *defType;
4299    }
4300    *outName = String16(p, end-p);
4301    if(**outPackage == 0) {
4302        if(outErrorMsg) {
4303            *outErrorMsg = "Resource package cannot be an empty string";
4304        }
4305        return false;
4306    }
4307    if(**outType == 0) {
4308        if(outErrorMsg) {
4309            *outErrorMsg = "Resource type cannot be an empty string";
4310        }
4311        return false;
4312    }
4313    if(**outName == 0) {
4314        if(outErrorMsg) {
4315            *outErrorMsg = "Resource id cannot be an empty string";
4316        }
4317        return false;
4318    }
4319    return true;
4320}
4321
4322static uint32_t get_hex(char c, bool* outError)
4323{
4324    if (c >= '0' && c <= '9') {
4325        return c - '0';
4326    } else if (c >= 'a' && c <= 'f') {
4327        return c - 'a' + 0xa;
4328    } else if (c >= 'A' && c <= 'F') {
4329        return c - 'A' + 0xa;
4330    }
4331    *outError = true;
4332    return 0;
4333}
4334
4335struct unit_entry
4336{
4337    const char* name;
4338    size_t len;
4339    uint8_t type;
4340    uint32_t unit;
4341    float scale;
4342};
4343
4344static const unit_entry unitNames[] = {
4345    { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
4346    { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4347    { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4348    { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
4349    { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
4350    { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
4351    { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
4352    { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
4353    { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
4354    { NULL, 0, 0, 0, 0 }
4355};
4356
4357static bool parse_unit(const char* str, Res_value* outValue,
4358                       float* outScale, const char** outEnd)
4359{
4360    const char* end = str;
4361    while (*end != 0 && !isspace((unsigned char)*end)) {
4362        end++;
4363    }
4364    const size_t len = end-str;
4365
4366    const char* realEnd = end;
4367    while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
4368        realEnd++;
4369    }
4370    if (*realEnd != 0) {
4371        return false;
4372    }
4373
4374    const unit_entry* cur = unitNames;
4375    while (cur->name) {
4376        if (len == cur->len && strncmp(cur->name, str, len) == 0) {
4377            outValue->dataType = cur->type;
4378            outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
4379            *outScale = cur->scale;
4380            *outEnd = end;
4381            //printf("Found unit %s for %s\n", cur->name, str);
4382            return true;
4383        }
4384        cur++;
4385    }
4386
4387    return false;
4388}
4389
4390
4391bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
4392{
4393    while (len > 0 && isspace16(*s)) {
4394        s++;
4395        len--;
4396    }
4397
4398    if (len <= 0) {
4399        return false;
4400    }
4401
4402    size_t i = 0;
4403    int32_t val = 0;
4404    bool neg = false;
4405
4406    if (*s == '-') {
4407        neg = true;
4408        i++;
4409    }
4410
4411    if (s[i] < '0' || s[i] > '9') {
4412        return false;
4413    }
4414
4415    // Decimal or hex?
4416    if (s[i] == '0' && s[i+1] == 'x') {
4417        if (outValue)
4418            outValue->dataType = outValue->TYPE_INT_HEX;
4419        i += 2;
4420        bool error = false;
4421        while (i < len && !error) {
4422            val = (val*16) + get_hex(s[i], &error);
4423            i++;
4424        }
4425        if (error) {
4426            return false;
4427        }
4428    } else {
4429        if (outValue)
4430            outValue->dataType = outValue->TYPE_INT_DEC;
4431        while (i < len) {
4432            if (s[i] < '0' || s[i] > '9') {
4433                return false;
4434            }
4435            val = (val*10) + s[i]-'0';
4436            i++;
4437        }
4438    }
4439
4440    if (neg) val = -val;
4441
4442    while (i < len && isspace16(s[i])) {
4443        i++;
4444    }
4445
4446    if (i == len) {
4447        if (outValue)
4448            outValue->data = val;
4449        return true;
4450    }
4451
4452    return false;
4453}
4454
4455bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
4456{
4457    while (len > 0 && isspace16(*s)) {
4458        s++;
4459        len--;
4460    }
4461
4462    if (len <= 0) {
4463        return false;
4464    }
4465
4466    char buf[128];
4467    int i=0;
4468    while (len > 0 && *s != 0 && i < 126) {
4469        if (*s > 255) {
4470            return false;
4471        }
4472        buf[i++] = *s++;
4473        len--;
4474    }
4475
4476    if (len > 0) {
4477        return false;
4478    }
4479    if (buf[0] < '0' && buf[0] > '9' && buf[0] != '.') {
4480        return false;
4481    }
4482
4483    buf[i] = 0;
4484    const char* end;
4485    float f = strtof(buf, (char**)&end);
4486
4487    if (*end != 0 && !isspace((unsigned char)*end)) {
4488        // Might be a unit...
4489        float scale;
4490        if (parse_unit(end, outValue, &scale, &end)) {
4491            f *= scale;
4492            const bool neg = f < 0;
4493            if (neg) f = -f;
4494            uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4495            uint32_t radix;
4496            uint32_t shift;
4497            if ((bits&0x7fffff) == 0) {
4498                // Always use 23p0 if there is no fraction, just to make
4499                // things easier to read.
4500                radix = Res_value::COMPLEX_RADIX_23p0;
4501                shift = 23;
4502            } else if ((bits&0xffffffffff800000LL) == 0) {
4503                // Magnitude is zero -- can fit in 0 bits of precision.
4504                radix = Res_value::COMPLEX_RADIX_0p23;
4505                shift = 0;
4506            } else if ((bits&0xffffffff80000000LL) == 0) {
4507                // Magnitude can fit in 8 bits of precision.
4508                radix = Res_value::COMPLEX_RADIX_8p15;
4509                shift = 8;
4510            } else if ((bits&0xffffff8000000000LL) == 0) {
4511                // Magnitude can fit in 16 bits of precision.
4512                radix = Res_value::COMPLEX_RADIX_16p7;
4513                shift = 16;
4514            } else {
4515                // Magnitude needs entire range, so no fractional part.
4516                radix = Res_value::COMPLEX_RADIX_23p0;
4517                shift = 23;
4518            }
4519            int32_t mantissa = (int32_t)(
4520                (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
4521            if (neg) {
4522                mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
4523            }
4524            outValue->data |=
4525                (radix<<Res_value::COMPLEX_RADIX_SHIFT)
4526                | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
4527            //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
4528            //       f * (neg ? -1 : 1), bits, f*(1<<23),
4529            //       radix, shift, outValue->data);
4530            return true;
4531        }
4532        return false;
4533    }
4534
4535    while (*end != 0 && isspace((unsigned char)*end)) {
4536        end++;
4537    }
4538
4539    if (*end == 0) {
4540        if (outValue) {
4541            outValue->dataType = outValue->TYPE_FLOAT;
4542            *(float*)(&outValue->data) = f;
4543            return true;
4544        }
4545    }
4546
4547    return false;
4548}
4549
4550bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4551                             const char16_t* s, size_t len,
4552                             bool preserveSpaces, bool coerceType,
4553                             uint32_t attrID,
4554                             const String16* defType,
4555                             const String16* defPackage,
4556                             Accessor* accessor,
4557                             void* accessorCookie,
4558                             uint32_t attrType,
4559                             bool enforcePrivate) const
4560{
4561    bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4562    const char* errorMsg = NULL;
4563
4564    outValue->size = sizeof(Res_value);
4565    outValue->res0 = 0;
4566
4567    // First strip leading/trailing whitespace.  Do this before handling
4568    // escapes, so they can be used to force whitespace into the string.
4569    if (!preserveSpaces) {
4570        while (len > 0 && isspace16(*s)) {
4571            s++;
4572            len--;
4573        }
4574        while (len > 0 && isspace16(s[len-1])) {
4575            len--;
4576        }
4577        // If the string ends with '\', then we keep the space after it.
4578        if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4579            len++;
4580        }
4581    }
4582
4583    //printf("Value for: %s\n", String8(s, len).string());
4584
4585    uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4586    uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4587    bool fromAccessor = false;
4588    if (attrID != 0 && !Res_INTERNALID(attrID)) {
4589        const ssize_t p = getResourcePackageIndex(attrID);
4590        const bag_entry* bag;
4591        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4592        //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4593        if (cnt >= 0) {
4594            while (cnt > 0) {
4595                //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4596                switch (bag->map.name.ident) {
4597                case ResTable_map::ATTR_TYPE:
4598                    attrType = bag->map.value.data;
4599                    break;
4600                case ResTable_map::ATTR_MIN:
4601                    attrMin = bag->map.value.data;
4602                    break;
4603                case ResTable_map::ATTR_MAX:
4604                    attrMax = bag->map.value.data;
4605                    break;
4606                case ResTable_map::ATTR_L10N:
4607                    l10nReq = bag->map.value.data;
4608                    break;
4609                }
4610                bag++;
4611                cnt--;
4612            }
4613            unlockBag(bag);
4614        } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4615            fromAccessor = true;
4616            if (attrType == ResTable_map::TYPE_ENUM
4617                    || attrType == ResTable_map::TYPE_FLAGS
4618                    || attrType == ResTable_map::TYPE_INTEGER) {
4619                accessor->getAttributeMin(attrID, &attrMin);
4620                accessor->getAttributeMax(attrID, &attrMax);
4621            }
4622            if (localizationSetting) {
4623                l10nReq = accessor->getAttributeL10N(attrID);
4624            }
4625        }
4626    }
4627
4628    const bool canStringCoerce =
4629        coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4630
4631    if (*s == '@') {
4632        outValue->dataType = outValue->TYPE_REFERENCE;
4633
4634        // Note: we don't check attrType here because the reference can
4635        // be to any other type; we just need to count on the client making
4636        // sure the referenced type is correct.
4637
4638        //printf("Looking up ref: %s\n", String8(s, len).string());
4639
4640        // It's a reference!
4641        if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4642            outValue->data = 0;
4643            return true;
4644        } else {
4645            bool createIfNotFound = false;
4646            const char16_t* resourceRefName;
4647            int resourceNameLen;
4648            if (len > 2 && s[1] == '+') {
4649                createIfNotFound = true;
4650                resourceRefName = s + 2;
4651                resourceNameLen = len - 2;
4652            } else if (len > 2 && s[1] == '*') {
4653                enforcePrivate = false;
4654                resourceRefName = s + 2;
4655                resourceNameLen = len - 2;
4656            } else {
4657                createIfNotFound = false;
4658                resourceRefName = s + 1;
4659                resourceNameLen = len - 1;
4660            }
4661            String16 package, type, name;
4662            if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
4663                                   defType, defPackage, &errorMsg)) {
4664                if (accessor != NULL) {
4665                    accessor->reportError(accessorCookie, errorMsg);
4666                }
4667                return false;
4668            }
4669
4670            uint32_t specFlags = 0;
4671            uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
4672                    type.size(), package.string(), package.size(), &specFlags);
4673            if (rid != 0) {
4674                if (enforcePrivate) {
4675                    if (accessor == NULL || accessor->getAssetsPackage() != package) {
4676                        if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4677                            if (accessor != NULL) {
4678                                accessor->reportError(accessorCookie, "Resource is not public.");
4679                            }
4680                            return false;
4681                        }
4682                    }
4683                }
4684
4685                if (accessor) {
4686                    rid = Res_MAKEID(
4687                        accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4688                        Res_GETTYPE(rid), Res_GETENTRY(rid));
4689                    TABLE_NOISY(printf("Incl %s:%s/%s: 0x%08x\n",
4690                           String8(package).string(), String8(type).string(),
4691                           String8(name).string(), rid));
4692                }
4693
4694                uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4695                if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
4696                    outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4697                }
4698                outValue->data = rid;
4699                return true;
4700            }
4701
4702            if (accessor) {
4703                uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
4704                                                                       createIfNotFound);
4705                if (rid != 0) {
4706                    TABLE_NOISY(printf("Pckg %s:%s/%s: 0x%08x\n",
4707                           String8(package).string(), String8(type).string(),
4708                           String8(name).string(), rid));
4709                    uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4710                    if (packageId == 0x00) {
4711                        outValue->data = rid;
4712                        outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4713                        return true;
4714                    } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
4715                        // We accept packageId's generated as 0x01 in order to support
4716                        // building the android system resources
4717                        outValue->data = rid;
4718                        return true;
4719                    }
4720                }
4721            }
4722        }
4723
4724        if (accessor != NULL) {
4725            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4726        }
4727        return false;
4728    }
4729
4730    // if we got to here, and localization is required and it's not a reference,
4731    // complain and bail.
4732    if (l10nReq == ResTable_map::L10N_SUGGESTED) {
4733        if (localizationSetting) {
4734            if (accessor != NULL) {
4735                accessor->reportError(accessorCookie, "This attribute must be localized.");
4736            }
4737        }
4738    }
4739
4740    if (*s == '#') {
4741        // It's a color!  Convert to an integer of the form 0xaarrggbb.
4742        uint32_t color = 0;
4743        bool error = false;
4744        if (len == 4) {
4745            outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
4746            color |= 0xFF000000;
4747            color |= get_hex(s[1], &error) << 20;
4748            color |= get_hex(s[1], &error) << 16;
4749            color |= get_hex(s[2], &error) << 12;
4750            color |= get_hex(s[2], &error) << 8;
4751            color |= get_hex(s[3], &error) << 4;
4752            color |= get_hex(s[3], &error);
4753        } else if (len == 5) {
4754            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
4755            color |= get_hex(s[1], &error) << 28;
4756            color |= get_hex(s[1], &error) << 24;
4757            color |= get_hex(s[2], &error) << 20;
4758            color |= get_hex(s[2], &error) << 16;
4759            color |= get_hex(s[3], &error) << 12;
4760            color |= get_hex(s[3], &error) << 8;
4761            color |= get_hex(s[4], &error) << 4;
4762            color |= get_hex(s[4], &error);
4763        } else if (len == 7) {
4764            outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
4765            color |= 0xFF000000;
4766            color |= get_hex(s[1], &error) << 20;
4767            color |= get_hex(s[2], &error) << 16;
4768            color |= get_hex(s[3], &error) << 12;
4769            color |= get_hex(s[4], &error) << 8;
4770            color |= get_hex(s[5], &error) << 4;
4771            color |= get_hex(s[6], &error);
4772        } else if (len == 9) {
4773            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
4774            color |= get_hex(s[1], &error) << 28;
4775            color |= get_hex(s[2], &error) << 24;
4776            color |= get_hex(s[3], &error) << 20;
4777            color |= get_hex(s[4], &error) << 16;
4778            color |= get_hex(s[5], &error) << 12;
4779            color |= get_hex(s[6], &error) << 8;
4780            color |= get_hex(s[7], &error) << 4;
4781            color |= get_hex(s[8], &error);
4782        } else {
4783            error = true;
4784        }
4785        if (!error) {
4786            if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
4787                if (!canStringCoerce) {
4788                    if (accessor != NULL) {
4789                        accessor->reportError(accessorCookie,
4790                                "Color types not allowed");
4791                    }
4792                    return false;
4793                }
4794            } else {
4795                outValue->data = color;
4796                //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
4797                return true;
4798            }
4799        } else {
4800            if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
4801                if (accessor != NULL) {
4802                    accessor->reportError(accessorCookie, "Color value not valid --"
4803                            " must be #rgb, #argb, #rrggbb, or #aarrggbb");
4804                }
4805                #if 0
4806                fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
4807                        "Resource File", //(const char*)in->getPrintableSource(),
4808                        String8(*curTag).string(),
4809                        String8(s, len).string());
4810                #endif
4811                return false;
4812            }
4813        }
4814    }
4815
4816    if (*s == '?') {
4817        outValue->dataType = outValue->TYPE_ATTRIBUTE;
4818
4819        // Note: we don't check attrType here because the reference can
4820        // be to any other type; we just need to count on the client making
4821        // sure the referenced type is correct.
4822
4823        //printf("Looking up attr: %s\n", String8(s, len).string());
4824
4825        static const String16 attr16("attr");
4826        String16 package, type, name;
4827        if (!expandResourceRef(s+1, len-1, &package, &type, &name,
4828                               &attr16, defPackage, &errorMsg)) {
4829            if (accessor != NULL) {
4830                accessor->reportError(accessorCookie, errorMsg);
4831            }
4832            return false;
4833        }
4834
4835        //printf("Pkg: %s, Type: %s, Name: %s\n",
4836        //       String8(package).string(), String8(type).string(),
4837        //       String8(name).string());
4838        uint32_t specFlags = 0;
4839        uint32_t rid =
4840            identifierForName(name.string(), name.size(),
4841                              type.string(), type.size(),
4842                              package.string(), package.size(), &specFlags);
4843        if (rid != 0) {
4844            if (enforcePrivate) {
4845                if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4846                    if (accessor != NULL) {
4847                        accessor->reportError(accessorCookie, "Attribute is not public.");
4848                    }
4849                    return false;
4850                }
4851            }
4852            if (!accessor) {
4853                outValue->data = rid;
4854                return true;
4855            }
4856            rid = Res_MAKEID(
4857                accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4858                Res_GETTYPE(rid), Res_GETENTRY(rid));
4859            //printf("Incl %s:%s/%s: 0x%08x\n",
4860            //       String8(package).string(), String8(type).string(),
4861            //       String8(name).string(), rid);
4862            outValue->data = rid;
4863            return true;
4864        }
4865
4866        if (accessor) {
4867            uint32_t rid = accessor->getCustomResource(package, type, name);
4868            if (rid != 0) {
4869                //printf("Mine %s:%s/%s: 0x%08x\n",
4870                //       String8(package).string(), String8(type).string(),
4871                //       String8(name).string(), rid);
4872                outValue->data = rid;
4873                return true;
4874            }
4875        }
4876
4877        if (accessor != NULL) {
4878            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4879        }
4880        return false;
4881    }
4882
4883    if (stringToInt(s, len, outValue)) {
4884        if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
4885            // If this type does not allow integers, but does allow floats,
4886            // fall through on this error case because the float type should
4887            // be able to accept any integer value.
4888            if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
4889                if (accessor != NULL) {
4890                    accessor->reportError(accessorCookie, "Integer types not allowed");
4891                }
4892                return false;
4893            }
4894        } else {
4895            if (((int32_t)outValue->data) < ((int32_t)attrMin)
4896                    || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
4897                if (accessor != NULL) {
4898                    accessor->reportError(accessorCookie, "Integer value out of range");
4899                }
4900                return false;
4901            }
4902            return true;
4903        }
4904    }
4905
4906    if (stringToFloat(s, len, outValue)) {
4907        if (outValue->dataType == Res_value::TYPE_DIMENSION) {
4908            if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
4909                return true;
4910            }
4911            if (!canStringCoerce) {
4912                if (accessor != NULL) {
4913                    accessor->reportError(accessorCookie, "Dimension types not allowed");
4914                }
4915                return false;
4916            }
4917        } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
4918            if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
4919                return true;
4920            }
4921            if (!canStringCoerce) {
4922                if (accessor != NULL) {
4923                    accessor->reportError(accessorCookie, "Fraction types not allowed");
4924                }
4925                return false;
4926            }
4927        } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
4928            if (!canStringCoerce) {
4929                if (accessor != NULL) {
4930                    accessor->reportError(accessorCookie, "Float types not allowed");
4931                }
4932                return false;
4933            }
4934        } else {
4935            return true;
4936        }
4937    }
4938
4939    if (len == 4) {
4940        if ((s[0] == 't' || s[0] == 'T') &&
4941            (s[1] == 'r' || s[1] == 'R') &&
4942            (s[2] == 'u' || s[2] == 'U') &&
4943            (s[3] == 'e' || s[3] == 'E')) {
4944            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4945                if (!canStringCoerce) {
4946                    if (accessor != NULL) {
4947                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4948                    }
4949                    return false;
4950                }
4951            } else {
4952                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4953                outValue->data = (uint32_t)-1;
4954                return true;
4955            }
4956        }
4957    }
4958
4959    if (len == 5) {
4960        if ((s[0] == 'f' || s[0] == 'F') &&
4961            (s[1] == 'a' || s[1] == 'A') &&
4962            (s[2] == 'l' || s[2] == 'L') &&
4963            (s[3] == 's' || s[3] == 'S') &&
4964            (s[4] == 'e' || s[4] == 'E')) {
4965            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4966                if (!canStringCoerce) {
4967                    if (accessor != NULL) {
4968                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4969                    }
4970                    return false;
4971                }
4972            } else {
4973                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4974                outValue->data = 0;
4975                return true;
4976            }
4977        }
4978    }
4979
4980    if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
4981        const ssize_t p = getResourcePackageIndex(attrID);
4982        const bag_entry* bag;
4983        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4984        //printf("Got %d for enum\n", cnt);
4985        if (cnt >= 0) {
4986            resource_name rname;
4987            while (cnt > 0) {
4988                if (!Res_INTERNALID(bag->map.name.ident)) {
4989                    //printf("Trying attr #%08x\n", bag->map.name.ident);
4990                    if (getResourceName(bag->map.name.ident, false, &rname)) {
4991                        #if 0
4992                        printf("Matching %s against %s (0x%08x)\n",
4993                               String8(s, len).string(),
4994                               String8(rname.name, rname.nameLen).string(),
4995                               bag->map.name.ident);
4996                        #endif
4997                        if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
4998                            outValue->dataType = bag->map.value.dataType;
4999                            outValue->data = bag->map.value.data;
5000                            unlockBag(bag);
5001                            return true;
5002                        }
5003                    }
5004
5005                }
5006                bag++;
5007                cnt--;
5008            }
5009            unlockBag(bag);
5010        }
5011
5012        if (fromAccessor) {
5013            if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5014                return true;
5015            }
5016        }
5017    }
5018
5019    if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5020        const ssize_t p = getResourcePackageIndex(attrID);
5021        const bag_entry* bag;
5022        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5023        //printf("Got %d for flags\n", cnt);
5024        if (cnt >= 0) {
5025            bool failed = false;
5026            resource_name rname;
5027            outValue->dataType = Res_value::TYPE_INT_HEX;
5028            outValue->data = 0;
5029            const char16_t* end = s + len;
5030            const char16_t* pos = s;
5031            while (pos < end && !failed) {
5032                const char16_t* start = pos;
5033                pos++;
5034                while (pos < end && *pos != '|') {
5035                    pos++;
5036                }
5037                //printf("Looking for: %s\n", String8(start, pos-start).string());
5038                const bag_entry* bagi = bag;
5039                ssize_t i;
5040                for (i=0; i<cnt; i++, bagi++) {
5041                    if (!Res_INTERNALID(bagi->map.name.ident)) {
5042                        //printf("Trying attr #%08x\n", bagi->map.name.ident);
5043                        if (getResourceName(bagi->map.name.ident, false, &rname)) {
5044                            #if 0
5045                            printf("Matching %s against %s (0x%08x)\n",
5046                                   String8(start,pos-start).string(),
5047                                   String8(rname.name, rname.nameLen).string(),
5048                                   bagi->map.name.ident);
5049                            #endif
5050                            if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5051                                outValue->data |= bagi->map.value.data;
5052                                break;
5053                            }
5054                        }
5055                    }
5056                }
5057                if (i >= cnt) {
5058                    // Didn't find this flag identifier.
5059                    failed = true;
5060                }
5061                if (pos < end) {
5062                    pos++;
5063                }
5064            }
5065            unlockBag(bag);
5066            if (!failed) {
5067                //printf("Final flag value: 0x%lx\n", outValue->data);
5068                return true;
5069            }
5070        }
5071
5072
5073        if (fromAccessor) {
5074            if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5075                //printf("Final flag value: 0x%lx\n", outValue->data);
5076                return true;
5077            }
5078        }
5079    }
5080
5081    if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5082        if (accessor != NULL) {
5083            accessor->reportError(accessorCookie, "String types not allowed");
5084        }
5085        return false;
5086    }
5087
5088    // Generic string handling...
5089    outValue->dataType = outValue->TYPE_STRING;
5090    if (outString) {
5091        bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5092        if (accessor != NULL) {
5093            accessor->reportError(accessorCookie, errorMsg);
5094        }
5095        return failed;
5096    }
5097
5098    return true;
5099}
5100
5101bool ResTable::collectString(String16* outString,
5102                             const char16_t* s, size_t len,
5103                             bool preserveSpaces,
5104                             const char** outErrorMsg,
5105                             bool append)
5106{
5107    String16 tmp;
5108
5109    char quoted = 0;
5110    const char16_t* p = s;
5111    while (p < (s+len)) {
5112        while (p < (s+len)) {
5113            const char16_t c = *p;
5114            if (c == '\\') {
5115                break;
5116            }
5117            if (!preserveSpaces) {
5118                if (quoted == 0 && isspace16(c)
5119                    && (c != ' ' || isspace16(*(p+1)))) {
5120                    break;
5121                }
5122                if (c == '"' && (quoted == 0 || quoted == '"')) {
5123                    break;
5124                }
5125                if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5126                    /*
5127                     * In practice, when people write ' instead of \'
5128                     * in a string, they are doing it by accident
5129                     * instead of really meaning to use ' as a quoting
5130                     * character.  Warn them so they don't lose it.
5131                     */
5132                    if (outErrorMsg) {
5133                        *outErrorMsg = "Apostrophe not preceded by \\";
5134                    }
5135                    return false;
5136                }
5137            }
5138            p++;
5139        }
5140        if (p < (s+len)) {
5141            if (p > s) {
5142                tmp.append(String16(s, p-s));
5143            }
5144            if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5145                if (quoted == 0) {
5146                    quoted = *p;
5147                } else {
5148                    quoted = 0;
5149                }
5150                p++;
5151            } else if (!preserveSpaces && isspace16(*p)) {
5152                // Space outside of a quote -- consume all spaces and
5153                // leave a single plain space char.
5154                tmp.append(String16(" "));
5155                p++;
5156                while (p < (s+len) && isspace16(*p)) {
5157                    p++;
5158                }
5159            } else if (*p == '\\') {
5160                p++;
5161                if (p < (s+len)) {
5162                    switch (*p) {
5163                    case 't':
5164                        tmp.append(String16("\t"));
5165                        break;
5166                    case 'n':
5167                        tmp.append(String16("\n"));
5168                        break;
5169                    case '#':
5170                        tmp.append(String16("#"));
5171                        break;
5172                    case '@':
5173                        tmp.append(String16("@"));
5174                        break;
5175                    case '?':
5176                        tmp.append(String16("?"));
5177                        break;
5178                    case '"':
5179                        tmp.append(String16("\""));
5180                        break;
5181                    case '\'':
5182                        tmp.append(String16("'"));
5183                        break;
5184                    case '\\':
5185                        tmp.append(String16("\\"));
5186                        break;
5187                    case 'u':
5188                    {
5189                        char16_t chr = 0;
5190                        int i = 0;
5191                        while (i < 4 && p[1] != 0) {
5192                            p++;
5193                            i++;
5194                            int c;
5195                            if (*p >= '0' && *p <= '9') {
5196                                c = *p - '0';
5197                            } else if (*p >= 'a' && *p <= 'f') {
5198                                c = *p - 'a' + 10;
5199                            } else if (*p >= 'A' && *p <= 'F') {
5200                                c = *p - 'A' + 10;
5201                            } else {
5202                                if (outErrorMsg) {
5203                                    *outErrorMsg = "Bad character in \\u unicode escape sequence";
5204                                }
5205                                return false;
5206                            }
5207                            chr = (chr<<4) | c;
5208                        }
5209                        tmp.append(String16(&chr, 1));
5210                    } break;
5211                    default:
5212                        // ignore unknown escape chars.
5213                        break;
5214                    }
5215                    p++;
5216                }
5217            }
5218            len -= (p-s);
5219            s = p;
5220        }
5221    }
5222
5223    if (tmp.size() != 0) {
5224        if (len > 0) {
5225            tmp.append(String16(s, len));
5226        }
5227        if (append) {
5228            outString->append(tmp);
5229        } else {
5230            outString->setTo(tmp);
5231        }
5232    } else {
5233        if (append) {
5234            outString->append(String16(s, len));
5235        } else {
5236            outString->setTo(s, len);
5237        }
5238    }
5239
5240    return true;
5241}
5242
5243size_t ResTable::getBasePackageCount() const
5244{
5245    if (mError != NO_ERROR) {
5246        return 0;
5247    }
5248    return mPackageGroups.size();
5249}
5250
5251const String16 ResTable::getBasePackageName(size_t idx) const
5252{
5253    if (mError != NO_ERROR) {
5254        return String16();
5255    }
5256    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5257                 "Requested package index %d past package count %d",
5258                 (int)idx, (int)mPackageGroups.size());
5259    return mPackageGroups[idx]->name;
5260}
5261
5262uint32_t ResTable::getBasePackageId(size_t idx) const
5263{
5264    if (mError != NO_ERROR) {
5265        return 0;
5266    }
5267    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5268                 "Requested package index %d past package count %d",
5269                 (int)idx, (int)mPackageGroups.size());
5270    return mPackageGroups[idx]->id;
5271}
5272
5273uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
5274{
5275    if (mError != NO_ERROR) {
5276        return 0;
5277    }
5278    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5279            "Requested package index %d past package count %d",
5280            (int)idx, (int)mPackageGroups.size());
5281    const PackageGroup* const group = mPackageGroups[idx];
5282    return group->largestTypeId;
5283}
5284
5285size_t ResTable::getTableCount() const
5286{
5287    return mHeaders.size();
5288}
5289
5290const ResStringPool* ResTable::getTableStringBlock(size_t index) const
5291{
5292    return &mHeaders[index]->values;
5293}
5294
5295int32_t ResTable::getTableCookie(size_t index) const
5296{
5297    return mHeaders[index]->cookie;
5298}
5299
5300const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
5301{
5302    const size_t N = mPackageGroups.size();
5303    for (size_t i = 0; i < N; i++) {
5304        const PackageGroup* pg = mPackageGroups[i];
5305        size_t M = pg->packages.size();
5306        for (size_t j = 0; j < M; j++) {
5307            if (pg->packages[j]->header->cookie == cookie) {
5308                return &pg->dynamicRefTable;
5309            }
5310        }
5311    }
5312    return NULL;
5313}
5314
5315void ResTable::getConfigurations(Vector<ResTable_config>* configs) const
5316{
5317    const size_t packageCount = mPackageGroups.size();
5318    for (size_t i = 0; i < packageCount; i++) {
5319        const PackageGroup* packageGroup = mPackageGroups[i];
5320        const size_t typeCount = packageGroup->types.size();
5321        for (size_t j = 0; j < typeCount; j++) {
5322            const TypeList& typeList = packageGroup->types[j];
5323            const size_t numTypes = typeList.size();
5324            for (size_t k = 0; k < numTypes; k++) {
5325                const Type* type = typeList[k];
5326                const size_t numConfigs = type->configs.size();
5327                for (size_t m = 0; m < numConfigs; m++) {
5328                    const ResTable_type* config = type->configs[m];
5329                    ResTable_config cfg;
5330                    memset(&cfg, 0, sizeof(ResTable_config));
5331                    cfg.copyFromDtoH(config->config);
5332                    // only insert unique
5333                    const size_t N = configs->size();
5334                    size_t n;
5335                    for (n = 0; n < N; n++) {
5336                        if (0 == (*configs)[n].compare(cfg)) {
5337                            break;
5338                        }
5339                    }
5340                    // if we didn't find it
5341                    if (n == N) {
5342                        configs->add(cfg);
5343                    }
5344                }
5345            }
5346        }
5347    }
5348}
5349
5350void ResTable::getLocales(Vector<String8>* locales) const
5351{
5352    Vector<ResTable_config> configs;
5353    ALOGV("calling getConfigurations");
5354    getConfigurations(&configs);
5355    ALOGV("called getConfigurations size=%d", (int)configs.size());
5356    const size_t I = configs.size();
5357
5358    char locale[RESTABLE_MAX_LOCALE_LEN];
5359    for (size_t i=0; i<I; i++) {
5360        configs[i].getBcp47Locale(locale);
5361        const size_t J = locales->size();
5362        size_t j;
5363        for (j=0; j<J; j++) {
5364            if (0 == strcmp(locale, (*locales)[j].string())) {
5365                break;
5366            }
5367        }
5368        if (j == J) {
5369            locales->add(String8(locale));
5370        }
5371    }
5372}
5373
5374StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
5375    : mPool(pool), mIndex(index) {}
5376
5377StringPoolRef::StringPoolRef()
5378    : mPool(NULL), mIndex(0) {}
5379
5380const char* StringPoolRef::string8(size_t* outLen) const {
5381    if (mPool != NULL) {
5382        return mPool->string8At(mIndex, outLen);
5383    }
5384    if (outLen != NULL) {
5385        *outLen = 0;
5386    }
5387    return NULL;
5388}
5389
5390const char16_t* StringPoolRef::string16(size_t* outLen) const {
5391    if (mPool != NULL) {
5392        return mPool->stringAt(mIndex, outLen);
5393    }
5394    if (outLen != NULL) {
5395        *outLen = 0;
5396    }
5397    return NULL;
5398}
5399
5400bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
5401    if (mError != NO_ERROR) {
5402        return false;
5403    }
5404
5405    const ssize_t p = getResourcePackageIndex(resID);
5406    const int t = Res_GETTYPE(resID);
5407    const int e = Res_GETENTRY(resID);
5408
5409    if (p < 0) {
5410        if (Res_GETPACKAGE(resID)+1 == 0) {
5411            ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
5412        } else {
5413            ALOGW("No known package when getting flags for resource number 0x%08x", resID);
5414        }
5415        return false;
5416    }
5417    if (t < 0) {
5418        ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
5419        return false;
5420    }
5421
5422    const PackageGroup* const grp = mPackageGroups[p];
5423    if (grp == NULL) {
5424        ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
5425        return false;
5426    }
5427
5428    Entry entry;
5429    status_t err = getEntry(grp, t, e, NULL, &entry);
5430    if (err != NO_ERROR) {
5431        return false;
5432    }
5433
5434    *outFlags = entry.specFlags;
5435    return true;
5436}
5437
5438status_t ResTable::getEntry(
5439        const PackageGroup* packageGroup, int typeIndex, int entryIndex,
5440        const ResTable_config* config,
5441        Entry* outEntry) const
5442{
5443    const TypeList& typeList = packageGroup->types[typeIndex];
5444    if (typeList.isEmpty()) {
5445        ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
5446        return BAD_TYPE;
5447    }
5448
5449    const ResTable_type* bestType = NULL;
5450    uint32_t bestOffset = ResTable_type::NO_ENTRY;
5451    const Package* bestPackage = NULL;
5452    uint32_t specFlags = 0;
5453    uint8_t actualTypeIndex = typeIndex;
5454    ResTable_config bestConfig;
5455    memset(&bestConfig, 0, sizeof(bestConfig));
5456
5457    // Iterate over the Types of each package.
5458    const size_t typeCount = typeList.size();
5459    for (size_t i = 0; i < typeCount; i++) {
5460        const Type* const typeSpec = typeList[i];
5461
5462        int realEntryIndex = entryIndex;
5463        int realTypeIndex = typeIndex;
5464        bool currentTypeIsOverlay = false;
5465
5466        // Runtime overlay packages provide a mapping of app resource
5467        // ID to package resource ID.
5468        if (typeSpec->idmapEntries.hasEntries()) {
5469            uint16_t overlayEntryIndex;
5470            if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
5471                // No such mapping exists
5472                continue;
5473            }
5474            realEntryIndex = overlayEntryIndex;
5475            realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
5476            currentTypeIsOverlay = true;
5477        }
5478
5479        if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
5480            ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
5481                    Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
5482                    entryIndex, static_cast<int>(typeSpec->entryCount));
5483            // We should normally abort here, but some legacy apps declare
5484            // resources in the 'android' package (old bug in AAPT).
5485            continue;
5486        }
5487
5488        // Aggregate all the flags for each package that defines this entry.
5489        if (typeSpec->typeSpecFlags != NULL) {
5490            specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
5491        } else {
5492            specFlags = -1;
5493        }
5494
5495        const size_t numConfigs = typeSpec->configs.size();
5496        for (size_t c = 0; c < numConfigs; c++) {
5497            const ResTable_type* const thisType = typeSpec->configs[c];
5498            if (thisType == NULL) {
5499                continue;
5500            }
5501
5502            ResTable_config thisConfig;
5503            thisConfig.copyFromDtoH(thisType->config);
5504
5505            // Check to make sure this one is valid for the current parameters.
5506            if (config != NULL && !thisConfig.match(*config)) {
5507                continue;
5508            }
5509
5510            // Check if there is the desired entry in this type.
5511            const uint8_t* const end = reinterpret_cast<const uint8_t*>(thisType)
5512                    + dtohl(thisType->header.size);
5513            const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
5514                    reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
5515
5516            uint32_t thisOffset = dtohl(eindex[realEntryIndex]);
5517            if (thisOffset == ResTable_type::NO_ENTRY) {
5518                // There is no entry for this index and configuration.
5519                continue;
5520            }
5521
5522            if (bestType != NULL) {
5523                // Check if this one is less specific than the last found.  If so,
5524                // we will skip it.  We check starting with things we most care
5525                // about to those we least care about.
5526                if (!thisConfig.isBetterThan(bestConfig, config)) {
5527                    if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
5528                        continue;
5529                    }
5530                }
5531            }
5532
5533            bestType = thisType;
5534            bestOffset = thisOffset;
5535            bestConfig = thisConfig;
5536            bestPackage = typeSpec->package;
5537            actualTypeIndex = realTypeIndex;
5538
5539            // If no config was specified, any type will do, so skip
5540            if (config == NULL) {
5541                break;
5542            }
5543        }
5544    }
5545
5546    if (bestType == NULL) {
5547        return BAD_INDEX;
5548    }
5549
5550    bestOffset += dtohl(bestType->entriesStart);
5551
5552    if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
5553        ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
5554                bestOffset, dtohl(bestType->header.size));
5555        return BAD_TYPE;
5556    }
5557    if ((bestOffset & 0x3) != 0) {
5558        ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
5559        return BAD_TYPE;
5560    }
5561
5562    const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
5563            reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
5564    if (dtohs(entry->size) < sizeof(*entry)) {
5565        ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
5566        return BAD_TYPE;
5567    }
5568
5569    if (outEntry != NULL) {
5570        outEntry->entry = entry;
5571        outEntry->config = bestConfig;
5572        outEntry->type = bestType;
5573        outEntry->specFlags = specFlags;
5574        outEntry->package = bestPackage;
5575        outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
5576        outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
5577    }
5578    return NO_ERROR;
5579}
5580
5581status_t ResTable::parsePackage(const ResTable_package* const pkg,
5582                                const Header* const header)
5583{
5584    const uint8_t* base = (const uint8_t*)pkg;
5585    status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
5586                                  header->dataEnd, "ResTable_package");
5587    if (err != NO_ERROR) {
5588        return (mError=err);
5589    }
5590
5591    const uint32_t pkgSize = dtohl(pkg->header.size);
5592
5593    if (dtohl(pkg->typeStrings) >= pkgSize) {
5594        ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
5595             dtohl(pkg->typeStrings), pkgSize);
5596        return (mError=BAD_TYPE);
5597    }
5598    if ((dtohl(pkg->typeStrings)&0x3) != 0) {
5599        ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
5600             dtohl(pkg->typeStrings));
5601        return (mError=BAD_TYPE);
5602    }
5603    if (dtohl(pkg->keyStrings) >= pkgSize) {
5604        ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
5605             dtohl(pkg->keyStrings), pkgSize);
5606        return (mError=BAD_TYPE);
5607    }
5608    if ((dtohl(pkg->keyStrings)&0x3) != 0) {
5609        ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
5610             dtohl(pkg->keyStrings));
5611        return (mError=BAD_TYPE);
5612    }
5613
5614    uint32_t id = dtohl(pkg->id);
5615    KeyedVector<uint8_t, IdmapEntries> idmapEntries;
5616
5617    if (header->resourceIDMap != NULL) {
5618        uint8_t targetPackageId = 0;
5619        status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
5620        if (err != NO_ERROR) {
5621            ALOGW("Overlay is broken");
5622            return (mError=err);
5623        }
5624        id = targetPackageId;
5625    }
5626
5627    if (id >= 256) {
5628        LOG_ALWAYS_FATAL("Package id out of range");
5629        return NO_ERROR;
5630    } else if (id == 0) {
5631        // This is a library so assign an ID
5632        id = mNextPackageId++;
5633    }
5634
5635    PackageGroup* group = NULL;
5636    Package* package = new Package(this, header, pkg);
5637    if (package == NULL) {
5638        return (mError=NO_MEMORY);
5639    }
5640
5641    err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
5642                                   header->dataEnd-(base+dtohl(pkg->typeStrings)));
5643    if (err != NO_ERROR) {
5644        delete group;
5645        delete package;
5646        return (mError=err);
5647    }
5648
5649    err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
5650                                  header->dataEnd-(base+dtohl(pkg->keyStrings)));
5651    if (err != NO_ERROR) {
5652        delete group;
5653        delete package;
5654        return (mError=err);
5655    }
5656
5657    size_t idx = mPackageMap[id];
5658    if (idx == 0) {
5659        idx = mPackageGroups.size() + 1;
5660
5661        char16_t tmpName[sizeof(pkg->name)/sizeof(pkg->name[0])];
5662        strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(pkg->name[0]));
5663        group = new PackageGroup(this, String16(tmpName), id);
5664        if (group == NULL) {
5665            delete package;
5666            return (mError=NO_MEMORY);
5667        }
5668
5669        err = mPackageGroups.add(group);
5670        if (err < NO_ERROR) {
5671            return (mError=err);
5672        }
5673
5674        mPackageMap[id] = static_cast<uint8_t>(idx);
5675
5676        // Find all packages that reference this package
5677        size_t N = mPackageGroups.size();
5678        for (size_t i = 0; i < N; i++) {
5679            mPackageGroups[i]->dynamicRefTable.addMapping(
5680                    group->name, static_cast<uint8_t>(group->id));
5681        }
5682    } else {
5683        group = mPackageGroups.itemAt(idx - 1);
5684        if (group == NULL) {
5685            return (mError=UNKNOWN_ERROR);
5686        }
5687    }
5688
5689    err = group->packages.add(package);
5690    if (err < NO_ERROR) {
5691        return (mError=err);
5692    }
5693
5694    // Iterate through all chunks.
5695    const ResChunk_header* chunk =
5696        (const ResChunk_header*)(((const uint8_t*)pkg)
5697                                 + dtohs(pkg->header.headerSize));
5698    const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
5699    while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
5700           ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
5701        TABLE_NOISY(ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
5702                         dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
5703                         (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
5704        const size_t csize = dtohl(chunk->size);
5705        const uint16_t ctype = dtohs(chunk->type);
5706        if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
5707            const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
5708            err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
5709                                 endPos, "ResTable_typeSpec");
5710            if (err != NO_ERROR) {
5711                return (mError=err);
5712            }
5713
5714            const size_t typeSpecSize = dtohl(typeSpec->header.size);
5715            const size_t newEntryCount = dtohl(typeSpec->entryCount);
5716
5717            LOAD_TABLE_NOISY(printf("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5718                                    (void*)(base-(const uint8_t*)chunk),
5719                                    dtohs(typeSpec->header.type),
5720                                    dtohs(typeSpec->header.headerSize),
5721                                    (void*)typeSpecSize));
5722            // look for block overrun or int overflow when multiplying by 4
5723            if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
5724                    || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5725                    > typeSpecSize)) {
5726                ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
5727                        (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5728                        (void*)typeSpecSize);
5729                return (mError=BAD_TYPE);
5730            }
5731
5732            if (typeSpec->id == 0) {
5733                ALOGW("ResTable_type has an id of 0.");
5734                return (mError=BAD_TYPE);
5735            }
5736
5737            if (newEntryCount > 0) {
5738                uint8_t typeIndex = typeSpec->id - 1;
5739                ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
5740                if (idmapIndex >= 0) {
5741                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5742                }
5743
5744                TypeList& typeList = group->types.editItemAt(typeIndex);
5745                if (!typeList.isEmpty()) {
5746                    const Type* existingType = typeList[0];
5747                    if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
5748                        ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
5749                                (int) newEntryCount, (int) existingType->entryCount);
5750                        // We should normally abort here, but some legacy apps declare
5751                        // resources in the 'android' package (old bug in AAPT).
5752                    }
5753                }
5754
5755                Type* t = new Type(header, package, newEntryCount);
5756                t->typeSpec = typeSpec;
5757                t->typeSpecFlags = (const uint32_t*)(
5758                        ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
5759                if (idmapIndex >= 0) {
5760                    t->idmapEntries = idmapEntries[idmapIndex];
5761                }
5762                typeList.add(t);
5763                group->largestTypeId = max(group->largestTypeId, typeSpec->id);
5764            } else {
5765                ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
5766            }
5767
5768        } else if (ctype == RES_TABLE_TYPE_TYPE) {
5769            const ResTable_type* type = (const ResTable_type*)(chunk);
5770            err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
5771                                 endPos, "ResTable_type");
5772            if (err != NO_ERROR) {
5773                return (mError=err);
5774            }
5775
5776            const uint32_t typeSize = dtohl(type->header.size);
5777            const size_t newEntryCount = dtohl(type->entryCount);
5778
5779            LOAD_TABLE_NOISY(printf("Type off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5780                                    (void*)(base-(const uint8_t*)chunk),
5781                                    dtohs(type->header.type),
5782                                    dtohs(type->header.headerSize),
5783                                    (void*)typeSize));
5784            if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5785                    > typeSize) {
5786                ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
5787                        (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5788                        typeSize);
5789                return (mError=BAD_TYPE);
5790            }
5791
5792            if (newEntryCount != 0
5793                && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
5794                ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
5795                     dtohl(type->entriesStart), typeSize);
5796                return (mError=BAD_TYPE);
5797            }
5798
5799            if (type->id == 0) {
5800                ALOGW("ResTable_type has an id of 0.");
5801                return (mError=BAD_TYPE);
5802            }
5803
5804            if (newEntryCount > 0) {
5805                uint8_t typeIndex = type->id - 1;
5806                ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
5807                if (idmapIndex >= 0) {
5808                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5809                }
5810
5811                TypeList& typeList = group->types.editItemAt(typeIndex);
5812                if (typeList.isEmpty()) {
5813                    ALOGE("No TypeSpec for type %d", type->id);
5814                    return (mError=BAD_TYPE);
5815                }
5816
5817                Type* t = typeList.editItemAt(typeList.size() - 1);
5818                if (newEntryCount != t->entryCount) {
5819                    ALOGE("ResTable_type entry count inconsistent: given %d, previously %d",
5820                        (int)newEntryCount, (int)t->entryCount);
5821                    return (mError=BAD_TYPE);
5822                }
5823
5824                if (t->package != package) {
5825                    ALOGE("No TypeSpec for type %d", type->id);
5826                    return (mError=BAD_TYPE);
5827                }
5828
5829                t->configs.add(type);
5830
5831                TABLE_GETENTRY(
5832                    ResTable_config thisConfig;
5833                    thisConfig.copyFromDtoH(type->config);
5834                    ALOGI("Adding config to type %d: %s\n",
5835                          type->id, thisConfig.toString().string()));
5836            } else {
5837                ALOGV("Skipping empty ResTable_type for type %d", type->id);
5838            }
5839
5840        } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
5841            if (group->dynamicRefTable.entries().size() == 0) {
5842                status_t err = group->dynamicRefTable.load((const ResTable_lib_header*) chunk);
5843                if (err != NO_ERROR) {
5844                    return (mError=err);
5845                }
5846
5847                // Fill in the reference table with the entries we already know about.
5848                size_t N = mPackageGroups.size();
5849                for (size_t i = 0; i < N; i++) {
5850                    group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
5851                }
5852            } else {
5853                ALOGW("Found multiple library tables, ignoring...");
5854            }
5855        } else {
5856            status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
5857                                          endPos, "ResTable_package:unknown");
5858            if (err != NO_ERROR) {
5859                return (mError=err);
5860            }
5861        }
5862        chunk = (const ResChunk_header*)
5863            (((const uint8_t*)chunk) + csize);
5864    }
5865
5866    return NO_ERROR;
5867}
5868
5869DynamicRefTable::DynamicRefTable(uint8_t packageId)
5870    : mAssignedPackageId(packageId)
5871{
5872    memset(mLookupTable, 0, sizeof(mLookupTable));
5873
5874    // Reserved package ids
5875    mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
5876    mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
5877}
5878
5879status_t DynamicRefTable::load(const ResTable_lib_header* const header)
5880{
5881    const uint32_t entryCount = dtohl(header->count);
5882    const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
5883    const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
5884    if (sizeOfEntries > expectedSize) {
5885        ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
5886                expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
5887        return UNKNOWN_ERROR;
5888    }
5889
5890    const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
5891            dtohl(header->header.headerSize));
5892    for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
5893        uint32_t packageId = dtohl(entry->packageId);
5894        char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
5895        strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
5896        LIB_NOISY(ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
5897                dtohl(entry->packageId)));
5898        if (packageId >= 256) {
5899            ALOGE("Bad package id 0x%08x", packageId);
5900            return UNKNOWN_ERROR;
5901        }
5902        mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
5903        entry = entry + 1;
5904    }
5905    return NO_ERROR;
5906}
5907
5908status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
5909    if (mAssignedPackageId != other.mAssignedPackageId) {
5910        return UNKNOWN_ERROR;
5911    }
5912
5913    const size_t entryCount = other.mEntries.size();
5914    for (size_t i = 0; i < entryCount; i++) {
5915        ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
5916        if (index < 0) {
5917            mEntries.add(other.mEntries.keyAt(i), other.mEntries[i]);
5918        } else {
5919            if (other.mEntries[i] != mEntries[index]) {
5920                return UNKNOWN_ERROR;
5921            }
5922        }
5923    }
5924
5925    // Merge the lookup table. No entry can conflict
5926    // (value of 0 means not set).
5927    for (size_t i = 0; i < 256; i++) {
5928        if (mLookupTable[i] != other.mLookupTable[i]) {
5929            if (mLookupTable[i] == 0) {
5930                mLookupTable[i] = other.mLookupTable[i];
5931            } else if (other.mLookupTable[i] != 0) {
5932                return UNKNOWN_ERROR;
5933            }
5934        }
5935    }
5936    return NO_ERROR;
5937}
5938
5939status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
5940{
5941    ssize_t index = mEntries.indexOfKey(packageName);
5942    if (index < 0) {
5943        return UNKNOWN_ERROR;
5944    }
5945    mLookupTable[mEntries.valueAt(index)] = packageId;
5946    return NO_ERROR;
5947}
5948
5949status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
5950    uint32_t res = *resId;
5951    size_t packageId = Res_GETPACKAGE(res) + 1;
5952
5953    if (packageId == APP_PACKAGE_ID) {
5954        // No lookup needs to be done, app package IDs are absolute.
5955        return NO_ERROR;
5956    }
5957
5958    if (packageId == 0) {
5959        // The package ID is 0x00. That means that a shared library is accessing
5960        // its own local resource, so we fix up the resource with the calling
5961        // package ID.
5962        *resId |= ((uint32_t) mAssignedPackageId) << 24;
5963        return NO_ERROR;
5964    }
5965
5966    // Do a proper lookup.
5967    uint8_t translatedId = mLookupTable[packageId];
5968    if (translatedId == 0) {
5969        ALOGE("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
5970                (uint8_t)mAssignedPackageId, (uint8_t)packageId);
5971        for (size_t i = 0; i < 256; i++) {
5972            if (mLookupTable[i] != 0) {
5973                ALOGE("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
5974            }
5975        }
5976        return UNKNOWN_ERROR;
5977    }
5978
5979    *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
5980    return NO_ERROR;
5981}
5982
5983status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
5984    if (value->dataType != Res_value::TYPE_DYNAMIC_REFERENCE) {
5985        return NO_ERROR;
5986    }
5987
5988    status_t err = lookupResourceId(&value->data);
5989    if (err != NO_ERROR) {
5990        return err;
5991    }
5992
5993    value->dataType = Res_value::TYPE_REFERENCE;
5994    return NO_ERROR;
5995}
5996
5997struct IdmapTypeMap {
5998    ssize_t overlayTypeId;
5999    size_t entryOffset;
6000    Vector<uint32_t> entryMap;
6001};
6002
6003status_t ResTable::createIdmap(const ResTable& overlay,
6004        uint32_t targetCrc, uint32_t overlayCrc,
6005        const char* targetPath, const char* overlayPath,
6006        void** outData, size_t* outSize) const
6007{
6008    // see README for details on the format of map
6009    if (mPackageGroups.size() == 0) {
6010        ALOGW("idmap: target package has no package groups, cannot create idmap\n");
6011        return UNKNOWN_ERROR;
6012    }
6013
6014    if (mPackageGroups[0]->packages.size() == 0) {
6015        ALOGW("idmap: target package has no packages in its first package group, "
6016                "cannot create idmap\n");
6017        return UNKNOWN_ERROR;
6018    }
6019
6020    KeyedVector<uint8_t, IdmapTypeMap> map;
6021
6022    // overlaid packages are assumed to contain only one package group
6023    const PackageGroup* pg = mPackageGroups[0];
6024
6025    // starting size is header
6026    *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
6027
6028    // target package id and number of types in map
6029    *outSize += 2 * sizeof(uint16_t);
6030
6031    // overlay packages are assumed to contain only one package group
6032    const ResTable_package* overlayPackageStruct = overlay.mPackageGroups[0]->packages[0]->package;
6033    char16_t tmpName[sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0])];
6034    strcpy16_dtoh(tmpName, overlayPackageStruct->name, sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0]));
6035    const String16 overlayPackage(tmpName);
6036
6037    for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
6038        const TypeList& typeList = pg->types[typeIndex];
6039        if (typeList.isEmpty()) {
6040            continue;
6041        }
6042
6043        const Type* typeConfigs = typeList[0];
6044
6045        IdmapTypeMap typeMap;
6046        typeMap.overlayTypeId = -1;
6047        typeMap.entryOffset = 0;
6048
6049        for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
6050            uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
6051            resource_name resName;
6052            if (!this->getResourceName(resID, false, &resName)) {
6053                if (typeMap.entryMap.isEmpty()) {
6054                    typeMap.entryOffset++;
6055                }
6056                continue;
6057            }
6058
6059            const String16 overlayType(resName.type, resName.typeLen);
6060            const String16 overlayName(resName.name, resName.nameLen);
6061            uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
6062                                                              overlayName.size(),
6063                                                              overlayType.string(),
6064                                                              overlayType.size(),
6065                                                              overlayPackage.string(),
6066                                                              overlayPackage.size());
6067            if (overlayResID == 0) {
6068                if (typeMap.entryMap.isEmpty()) {
6069                    typeMap.entryOffset++;
6070                }
6071                continue;
6072            }
6073
6074            if (typeMap.overlayTypeId == -1) {
6075                typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
6076            }
6077
6078            if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
6079                ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
6080                        " but entries should map to resources of type %02x",
6081                        resID, overlayResID, typeMap.overlayTypeId);
6082                return BAD_TYPE;
6083            }
6084
6085            if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
6086                // Resize to accomodate this entry and the 0's in between.
6087                if (typeMap.entryMap.resize((entryIndex - typeMap.entryOffset) + 1) < 0) {
6088                    return NO_MEMORY;
6089                }
6090                typeMap.entryMap.editTop() = Res_GETENTRY(overlayResID);
6091            } else {
6092                typeMap.entryMap.add(Res_GETENTRY(overlayResID));
6093            }
6094        }
6095
6096        if (!typeMap.entryMap.isEmpty()) {
6097            if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
6098                return NO_MEMORY;
6099            }
6100            *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
6101        }
6102    }
6103
6104    if (map.isEmpty()) {
6105        ALOGW("idmap: no resources in overlay package present in base package");
6106        return UNKNOWN_ERROR;
6107    }
6108
6109    if ((*outData = malloc(*outSize)) == NULL) {
6110        return NO_MEMORY;
6111    }
6112
6113    uint32_t* data = (uint32_t*)*outData;
6114    *data++ = htodl(IDMAP_MAGIC);
6115    *data++ = htodl(IDMAP_CURRENT_VERSION);
6116    *data++ = htodl(targetCrc);
6117    *data++ = htodl(overlayCrc);
6118    const char* paths[] = { targetPath, overlayPath };
6119    for (int j = 0; j < 2; ++j) {
6120        char* p = (char*)data;
6121        const char* path = paths[j];
6122        const size_t I = strlen(path);
6123        if (I > 255) {
6124            ALOGV("path exceeds expected 255 characters: %s\n", path);
6125            return UNKNOWN_ERROR;
6126        }
6127        for (size_t i = 0; i < 256; ++i) {
6128            *p++ = i < I ? path[i] : '\0';
6129        }
6130        data += 256 / sizeof(uint32_t);
6131    }
6132    const size_t mapSize = map.size();
6133    uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
6134    *typeData++ = htods(pg->id);
6135    *typeData++ = htods(mapSize);
6136    for (size_t i = 0; i < mapSize; ++i) {
6137        uint8_t targetTypeId = map.keyAt(i);
6138        const IdmapTypeMap& typeMap = map[i];
6139        *typeData++ = htods(targetTypeId + 1);
6140        *typeData++ = htods(typeMap.overlayTypeId);
6141        *typeData++ = htods(typeMap.entryMap.size());
6142        *typeData++ = htods(typeMap.entryOffset);
6143
6144        const size_t entryCount = typeMap.entryMap.size();
6145        uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
6146        for (size_t j = 0; j < entryCount; j++) {
6147            entries[j] = htodl(typeMap.entryMap[j]);
6148        }
6149        typeData += entryCount * 2;
6150    }
6151
6152    return NO_ERROR;
6153}
6154
6155bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
6156                            uint32_t* pVersion,
6157                            uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
6158                            String8* pTargetPath, String8* pOverlayPath)
6159{
6160    const uint32_t* map = (const uint32_t*)idmap;
6161    if (!assertIdmapHeader(map, sizeBytes)) {
6162        return false;
6163    }
6164    if (pVersion) {
6165        *pVersion = dtohl(map[1]);
6166    }
6167    if (pTargetCrc) {
6168        *pTargetCrc = dtohl(map[2]);
6169    }
6170    if (pOverlayCrc) {
6171        *pOverlayCrc = dtohl(map[3]);
6172    }
6173    if (pTargetPath) {
6174        pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
6175    }
6176    if (pOverlayPath) {
6177        pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
6178    }
6179    return true;
6180}
6181
6182
6183#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
6184
6185#define CHAR16_ARRAY_EQ(constant, var, len) \
6186        ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
6187
6188static void print_complex(uint32_t complex, bool isFraction)
6189{
6190    const float MANTISSA_MULT =
6191        1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
6192    const float RADIX_MULTS[] = {
6193        1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
6194        1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
6195    };
6196
6197    float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
6198                   <<Res_value::COMPLEX_MANTISSA_SHIFT))
6199            * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
6200                            & Res_value::COMPLEX_RADIX_MASK];
6201    printf("%f", value);
6202
6203    if (!isFraction) {
6204        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6205            case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
6206            case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
6207            case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
6208            case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
6209            case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
6210            case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
6211            default: printf(" (unknown unit)"); break;
6212        }
6213    } else {
6214        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6215            case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
6216            case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
6217            default: printf(" (unknown unit)"); break;
6218        }
6219    }
6220}
6221
6222// Normalize a string for output
6223String8 ResTable::normalizeForOutput( const char *input )
6224{
6225    String8 ret;
6226    char buff[2];
6227    buff[1] = '\0';
6228
6229    while (*input != '\0') {
6230        switch (*input) {
6231            // All interesting characters are in the ASCII zone, so we are making our own lives
6232            // easier by scanning the string one byte at a time.
6233        case '\\':
6234            ret += "\\\\";
6235            break;
6236        case '\n':
6237            ret += "\\n";
6238            break;
6239        case '"':
6240            ret += "\\\"";
6241            break;
6242        default:
6243            buff[0] = *input;
6244            ret += buff;
6245            break;
6246        }
6247
6248        input++;
6249    }
6250
6251    return ret;
6252}
6253
6254void ResTable::print_value(const Package* pkg, const Res_value& value) const
6255{
6256    if (value.dataType == Res_value::TYPE_NULL) {
6257        printf("(null)\n");
6258    } else if (value.dataType == Res_value::TYPE_REFERENCE) {
6259        printf("(reference) 0x%08x\n", value.data);
6260    } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
6261        printf("(dynamic reference) 0x%08x\n", value.data);
6262    } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
6263        printf("(attribute) 0x%08x\n", value.data);
6264    } else if (value.dataType == Res_value::TYPE_STRING) {
6265        size_t len;
6266        const char* str8 = pkg->header->values.string8At(
6267                value.data, &len);
6268        if (str8 != NULL) {
6269            printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
6270        } else {
6271            const char16_t* str16 = pkg->header->values.stringAt(
6272                    value.data, &len);
6273            if (str16 != NULL) {
6274                printf("(string16) \"%s\"\n",
6275                    normalizeForOutput(String8(str16, len).string()).string());
6276            } else {
6277                printf("(string) null\n");
6278            }
6279        }
6280    } else if (value.dataType == Res_value::TYPE_FLOAT) {
6281        printf("(float) %g\n", *(const float*)&value.data);
6282    } else if (value.dataType == Res_value::TYPE_DIMENSION) {
6283        printf("(dimension) ");
6284        print_complex(value.data, false);
6285        printf("\n");
6286    } else if (value.dataType == Res_value::TYPE_FRACTION) {
6287        printf("(fraction) ");
6288        print_complex(value.data, true);
6289        printf("\n");
6290    } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
6291            || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
6292        printf("(color) #%08x\n", value.data);
6293    } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
6294        printf("(boolean) %s\n", value.data ? "true" : "false");
6295    } else if (value.dataType >= Res_value::TYPE_FIRST_INT
6296            || value.dataType <= Res_value::TYPE_LAST_INT) {
6297        printf("(int) 0x%08x or %d\n", value.data, value.data);
6298    } else {
6299        printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
6300               (int)value.dataType, (int)value.data,
6301               (int)value.size, (int)value.res0);
6302    }
6303}
6304
6305void ResTable::print(bool inclValues) const
6306{
6307    if (mError != 0) {
6308        printf("mError=0x%x (%s)\n", mError, strerror(mError));
6309    }
6310    size_t pgCount = mPackageGroups.size();
6311    printf("Package Groups (%d)\n", (int)pgCount);
6312    for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
6313        const PackageGroup* pg = mPackageGroups[pgIndex];
6314        printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
6315                (int)pgIndex, pg->id, (int)pg->packages.size(),
6316                String8(pg->name).string());
6317
6318        const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
6319        const size_t refEntryCount = refEntries.size();
6320        if (refEntryCount > 0) {
6321            printf("  DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
6322            for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
6323                printf("    0x%02x -> %s\n",
6324                        refEntries.valueAt(refIndex),
6325                        String8(refEntries.keyAt(refIndex)).string());
6326            }
6327            printf("\n");
6328        }
6329
6330        int packageId = pg->id;
6331        size_t pkgCount = pg->packages.size();
6332        for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
6333            const Package* pkg = pg->packages[pkgIndex];
6334            // Use a package's real ID, since the ID may have been assigned
6335            // if this package is a shared library.
6336            packageId = pkg->package->id;
6337            char16_t tmpName[sizeof(pkg->package->name)/sizeof(pkg->package->name[0])];
6338            strcpy16_dtoh(tmpName, pkg->package->name, sizeof(pkg->package->name)/sizeof(pkg->package->name[0]));
6339            printf("  Package %d id=0x%02x name=%s\n", (int)pkgIndex,
6340                    pkg->package->id, String8(tmpName).string());
6341        }
6342
6343        for (size_t typeIndex=0; typeIndex < pg->types.size(); typeIndex++) {
6344            const TypeList& typeList = pg->types[typeIndex];
6345            if (typeList.isEmpty()) {
6346                continue;
6347            }
6348            const Type* typeConfigs = typeList[0];
6349            const size_t NTC = typeConfigs->configs.size();
6350            printf("    type %d configCount=%d entryCount=%d\n",
6351                   (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
6352            if (typeConfigs->typeSpecFlags != NULL) {
6353                for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
6354                    uint32_t resID = (0xff000000 & ((packageId)<<24))
6355                                | (0x00ff0000 & ((typeIndex+1)<<16))
6356                                | (0x0000ffff & (entryIndex));
6357                    // Since we are creating resID without actually
6358                    // iterating over them, we have no idea which is a
6359                    // dynamic reference. We must check.
6360                    if (packageId == 0) {
6361                        pg->dynamicRefTable.lookupResourceId(&resID);
6362                    }
6363
6364                    resource_name resName;
6365                    if (this->getResourceName(resID, true, &resName)) {
6366                        String8 type8;
6367                        String8 name8;
6368                        if (resName.type8 != NULL) {
6369                            type8 = String8(resName.type8, resName.typeLen);
6370                        } else {
6371                            type8 = String8(resName.type, resName.typeLen);
6372                        }
6373                        if (resName.name8 != NULL) {
6374                            name8 = String8(resName.name8, resName.nameLen);
6375                        } else {
6376                            name8 = String8(resName.name, resName.nameLen);
6377                        }
6378                        printf("      spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
6379                            resID,
6380                            CHAR16_TO_CSTR(resName.package, resName.packageLen),
6381                            type8.string(), name8.string(),
6382                            dtohl(typeConfigs->typeSpecFlags[entryIndex]));
6383                    } else {
6384                        printf("      INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
6385                    }
6386                }
6387            }
6388            for (size_t configIndex=0; configIndex<NTC; configIndex++) {
6389                const ResTable_type* type = typeConfigs->configs[configIndex];
6390                if ((((uint64_t)type)&0x3) != 0) {
6391                    printf("      NON-INTEGER ResTable_type ADDRESS: %p\n", type);
6392                    continue;
6393                }
6394                String8 configStr = type->config.toString();
6395                printf("      config %s:\n", configStr.size() > 0
6396                        ? configStr.string() : "(default)");
6397                size_t entryCount = dtohl(type->entryCount);
6398                uint32_t entriesStart = dtohl(type->entriesStart);
6399                if ((entriesStart&0x3) != 0) {
6400                    printf("      NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n", entriesStart);
6401                    continue;
6402                }
6403                uint32_t typeSize = dtohl(type->header.size);
6404                if ((typeSize&0x3) != 0) {
6405                    printf("      NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
6406                    continue;
6407                }
6408                for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
6409
6410                    const uint8_t* const end = ((const uint8_t*)type)
6411                        + dtohl(type->header.size);
6412                    const uint32_t* const eindex = (const uint32_t*)
6413                        (((const uint8_t*)type) + dtohs(type->header.headerSize));
6414
6415                    uint32_t thisOffset = dtohl(eindex[entryIndex]);
6416                    if (thisOffset == ResTable_type::NO_ENTRY) {
6417                        continue;
6418                    }
6419
6420                    uint32_t resID = (0xff000000 & ((packageId)<<24))
6421                                | (0x00ff0000 & ((typeIndex+1)<<16))
6422                                | (0x0000ffff & (entryIndex));
6423                    if (packageId == 0) {
6424                        pg->dynamicRefTable.lookupResourceId(&resID);
6425                    }
6426                    resource_name resName;
6427                    if (this->getResourceName(resID, true, &resName)) {
6428                        String8 type8;
6429                        String8 name8;
6430                        if (resName.type8 != NULL) {
6431                            type8 = String8(resName.type8, resName.typeLen);
6432                        } else {
6433                            type8 = String8(resName.type, resName.typeLen);
6434                        }
6435                        if (resName.name8 != NULL) {
6436                            name8 = String8(resName.name8, resName.nameLen);
6437                        } else {
6438                            name8 = String8(resName.name, resName.nameLen);
6439                        }
6440                        printf("        resource 0x%08x %s:%s/%s: ", resID,
6441                                CHAR16_TO_CSTR(resName.package, resName.packageLen),
6442                                type8.string(), name8.string());
6443                    } else {
6444                        printf("        INVALID RESOURCE 0x%08x: ", resID);
6445                    }
6446                    if ((thisOffset&0x3) != 0) {
6447                        printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
6448                        continue;
6449                    }
6450                    if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
6451                        printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
6452                               entriesStart, thisOffset, typeSize);
6453                        continue;
6454                    }
6455
6456                    const ResTable_entry* ent = (const ResTable_entry*)
6457                        (((const uint8_t*)type) + entriesStart + thisOffset);
6458                    if (((entriesStart + thisOffset)&0x3) != 0) {
6459                        printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
6460                             (entriesStart + thisOffset));
6461                        continue;
6462                    }
6463
6464                    uintptr_t esize = dtohs(ent->size);
6465                    if ((esize&0x3) != 0) {
6466                        printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
6467                        continue;
6468                    }
6469                    if ((thisOffset+esize) > typeSize) {
6470                        printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
6471                               entriesStart, thisOffset, (void *)esize, typeSize);
6472                        continue;
6473                    }
6474
6475                    const Res_value* valuePtr = NULL;
6476                    const ResTable_map_entry* bagPtr = NULL;
6477                    Res_value value;
6478                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
6479                        printf("<bag>");
6480                        bagPtr = (const ResTable_map_entry*)ent;
6481                    } else {
6482                        valuePtr = (const Res_value*)
6483                            (((const uint8_t*)ent) + esize);
6484                        value.copyFrom_dtoh(*valuePtr);
6485                        printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
6486                               (int)value.dataType, (int)value.data,
6487                               (int)value.size, (int)value.res0);
6488                    }
6489
6490                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
6491                        printf(" (PUBLIC)");
6492                    }
6493                    printf("\n");
6494
6495                    if (inclValues) {
6496                        if (valuePtr != NULL) {
6497                            printf("          ");
6498                            print_value(typeConfigs->package, value);
6499                        } else if (bagPtr != NULL) {
6500                            const int N = dtohl(bagPtr->count);
6501                            const uint8_t* baseMapPtr = (const uint8_t*)ent;
6502                            size_t mapOffset = esize;
6503                            const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6504                            const uint32_t parent = dtohl(bagPtr->parent.ident);
6505                            uint32_t resolvedParent = parent;
6506                            if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
6507                                status_t err = pg->dynamicRefTable.lookupResourceId(&resolvedParent);
6508                                if (err != NO_ERROR) {
6509                                    resolvedParent = 0;
6510                                }
6511                            }
6512                            printf("          Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
6513                                    parent, resolvedParent, N);
6514                            for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
6515                                printf("          #%i (Key=0x%08x): ",
6516                                    i, dtohl(mapPtr->name.ident));
6517                                value.copyFrom_dtoh(mapPtr->value);
6518                                print_value(typeConfigs->package, value);
6519                                const size_t size = dtohs(mapPtr->value.size);
6520                                mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
6521                                mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6522                            }
6523                        }
6524                    }
6525                }
6526            }
6527        }
6528    }
6529}
6530
6531}   // namespace android
6532