ResourceTypes.cpp revision d7df9d7b38064b81e1b035893001499e79fc3cc0 
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(uint16_t* dst, const uint16_t* src, size_t avail)
91{
92    uint16_t* last = dst + avail - 1;
93    while (*src && (dst < last)) {
94        char16_t s = dtohs(*src);
95        *dst++ = s;
96        src++;
97    }
98    *dst = 0;
99}
100
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(char16_t);
505        }
506
507        // There should be at least space for the smallest string
508        // (2 bytes length, null terminator).
509        if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
510            ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
511                    (int)mHeader->stringsStart, (int)mHeader->header.size);
512            return (mError=BAD_TYPE);
513        }
514
515        mStrings = (const void*)
516            (((const uint8_t*)data) + mHeader->stringsStart);
517
518        if (mHeader->styleCount == 0) {
519            mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
520        } else {
521            // check invariant: styles starts before end of data
522            if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
523                ALOGW("Bad style block: style block starts at %d past data size of %d\n",
524                    (int)mHeader->stylesStart, (int)mHeader->header.size);
525                return (mError=BAD_TYPE);
526            }
527            // check invariant: styles follow the strings
528            if (mHeader->stylesStart <= mHeader->stringsStart) {
529                ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
530                    (int)mHeader->stylesStart, (int)mHeader->stringsStart);
531                return (mError=BAD_TYPE);
532            }
533            mStringPoolSize =
534                (mHeader->stylesStart-mHeader->stringsStart)/charSize;
535        }
536
537        // check invariant: stringCount > 0 requires a string pool to exist
538        if (mStringPoolSize == 0) {
539            ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
540            return (mError=BAD_TYPE);
541        }
542
543        if (notDeviceEndian) {
544            size_t i;
545            uint32_t* e = const_cast<uint32_t*>(mEntries);
546            for (i=0; i<mHeader->stringCount; i++) {
547                e[i] = dtohl(mEntries[i]);
548            }
549            if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
550                const char16_t* strings = (const char16_t*)mStrings;
551                char16_t* s = const_cast<char16_t*>(strings);
552                for (i=0; i<mStringPoolSize; i++) {
553                    s[i] = dtohs(strings[i]);
554                }
555            }
556        }
557
558        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
559                ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
560                (!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
561                ((char16_t*)mStrings)[mStringPoolSize-1] != 0)) {
562            ALOGW("Bad string block: last string is not 0-terminated\n");
563            return (mError=BAD_TYPE);
564        }
565    } else {
566        mStrings = NULL;
567        mStringPoolSize = 0;
568    }
569
570    if (mHeader->styleCount > 0) {
571        mEntryStyles = mEntries + mHeader->stringCount;
572        // invariant: integer overflow in calculating mEntryStyles
573        if (mEntryStyles < mEntries) {
574            ALOGW("Bad string block: integer overflow finding styles\n");
575            return (mError=BAD_TYPE);
576        }
577
578        if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
579            ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
580                    (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
581                    (int)size);
582            return (mError=BAD_TYPE);
583        }
584        mStyles = (const uint32_t*)
585            (((const uint8_t*)data)+mHeader->stylesStart);
586        if (mHeader->stylesStart >= mHeader->header.size) {
587            ALOGW("Bad string block: style pool starts %d, after total size %d\n",
588                    (int)mHeader->stylesStart, (int)mHeader->header.size);
589            return (mError=BAD_TYPE);
590        }
591        mStylePoolSize =
592            (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
593
594        if (notDeviceEndian) {
595            size_t i;
596            uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
597            for (i=0; i<mHeader->styleCount; i++) {
598                e[i] = dtohl(mEntryStyles[i]);
599            }
600            uint32_t* s = const_cast<uint32_t*>(mStyles);
601            for (i=0; i<mStylePoolSize; i++) {
602                s[i] = dtohl(mStyles[i]);
603            }
604        }
605
606        const ResStringPool_span endSpan = {
607            { htodl(ResStringPool_span::END) },
608            htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
609        };
610        if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
611                   &endSpan, sizeof(endSpan)) != 0) {
612            ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
613            return (mError=BAD_TYPE);
614        }
615    } else {
616        mEntryStyles = NULL;
617        mStyles = NULL;
618        mStylePoolSize = 0;
619    }
620
621    return (mError=NO_ERROR);
622}
623
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 char16_t** str)
660{
661    size_t len = **str;
662    if ((len & 0x8000) != 0) {
663        (*str)++;
664        len = ((len & 0x7FFF) << 16) | **str;
665    }
666    (*str)++;
667    return len;
668}
669
670/**
671 * Strings in UTF-8 format have length indicated by a length encoded in the
672 * stored data. It is either 1 or 2 characters of length data. This allows a
673 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
674 * text in another way if you're using that much data in a single string.
675 *
676 * If the high bit is set, then there are two characters or 2 bytes of length
677 * data encoded. In that case, drop the high bit of the first character and
678 * add it together with the next character.
679 */
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 uint16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
693{
694    if (mError == NO_ERROR && idx < mHeader->stringCount) {
695        const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
696        const uint32_t off = mEntries[idx]/(isUTF8?sizeof(char):sizeof(char16_t));
697        if (off < (mStringPoolSize-1)) {
698            if (!isUTF8) {
699                const char16_t* strings = (char16_t*)mStrings;
700                const char16_t* str = strings+off;
701
702                *u16len = decodeLength(&str);
703                if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
704                    return str;
705                } else {
706                    ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
707                            (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
708                }
709            } else {
710                const uint8_t* strings = (uint8_t*)mStrings;
711                const uint8_t* u8str = strings+off;
712
713                *u16len = decodeLength(&u8str);
714                size_t u8len = decodeLength(&u8str);
715
716                // encLen must be less than 0x7FFF due to encoding.
717                if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
718                    AutoMutex lock(mDecodeLock);
719
720                    if (mCache == NULL) {
721#ifndef HAVE_ANDROID_OS
722                        STRING_POOL_NOISY(ALOGI("CREATING STRING CACHE OF %d bytes",
723                                mHeader->stringCount*sizeof(char16_t**)));
724#else
725                        // We do not want to be in this case when actually running Android.
726                        ALOGW("CREATING STRING CACHE OF %d bytes",
727                                mHeader->stringCount*sizeof(char16_t**));
728#endif
729                        mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
730                        if (mCache == NULL) {
731                            ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
732                                    (int)(mHeader->stringCount*sizeof(char16_t**)));
733                            return NULL;
734                        }
735                    }
736
737                    if (mCache[idx] != NULL) {
738                        return mCache[idx];
739                    }
740
741                    ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
742                    if (actualLen < 0 || (size_t)actualLen != *u16len) {
743                        ALOGW("Bad string block: string #%lld decoded length is not correct "
744                                "%lld vs %llu\n",
745                                (long long)idx, (long long)actualLen, (long long)*u16len);
746                        return NULL;
747                    }
748
749                    char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
750                    if (!u16str) {
751                        ALOGW("No memory when trying to allocate decode cache for string #%d\n",
752                                (int)idx);
753                        return NULL;
754                    }
755
756                    STRING_POOL_NOISY(ALOGI("Caching UTF8 string: %s", u8str));
757                    utf8_to_utf16(u8str, u8len, u16str);
758                    mCache[idx] = u16str;
759                    return u16str;
760                } else {
761                    ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
762                            (long long)idx, (long long)(u8str+u8len-strings),
763                            (long long)mStringPoolSize);
764                }
765            }
766        } else {
767            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
768                    (int)idx, (int)(off*sizeof(uint16_t)),
769                    (int)(mStringPoolSize*sizeof(uint16_t)));
770        }
771    }
772    return NULL;
773}
774
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 = (const char*)string8At(idx, &len);
806    if (str != NULL) {
807        return String8(str);
808    }
809    return String8(stringAt(idx, &len));
810}
811
812const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
813{
814    return styleAt(ref.index);
815}
816
817const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
818{
819    if (mError == NO_ERROR && idx < mHeader->styleCount) {
820        const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
821        if (off < mStylePoolSize) {
822            return (const ResStringPool_span*)(mStyles+off);
823        } else {
824            ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
825                    (int)idx, (int)(off*sizeof(uint32_t)),
826                    (int)(mStylePoolSize*sizeof(uint32_t)));
827        }
828    }
829    return NULL;
830}
831
832ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
833{
834    if (mError != NO_ERROR) {
835        return mError;
836    }
837
838    size_t len;
839
840    if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
841        STRING_POOL_NOISY(ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string()));
842
843        // The string pool contains UTF 8 strings; we don't want to cause
844        // temporary UTF-16 strings to be created as we search.
845        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
846            // Do a binary search for the string...  this is a little tricky,
847            // because the strings are sorted with strzcmp16().  So to match
848            // the ordering, we need to convert strings in the pool to UTF-16.
849            // But we don't want to hit the cache, so instead we will have a
850            // local temporary allocation for the conversions.
851            char16_t* convBuffer = (char16_t*)malloc(strLen+4);
852            ssize_t l = 0;
853            ssize_t h = mHeader->stringCount-1;
854
855            ssize_t mid;
856            while (l <= h) {
857                mid = l + (h - l)/2;
858                const uint8_t* s = (const uint8_t*)string8At(mid, &len);
859                int c;
860                if (s != NULL) {
861                    char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
862                    *end = 0;
863                    c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
864                } else {
865                    c = -1;
866                }
867                STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
868                             (const char*)s, c, (int)l, (int)mid, (int)h));
869                if (c == 0) {
870                    STRING_POOL_NOISY(ALOGI("MATCH!"));
871                    free(convBuffer);
872                    return mid;
873                } else if (c < 0) {
874                    l = mid + 1;
875                } else {
876                    h = mid - 1;
877                }
878            }
879            free(convBuffer);
880        } else {
881            // It is unusual to get the ID from an unsorted string block...
882            // most often this happens because we want to get IDs for style
883            // span tags; since those always appear at the end of the string
884            // block, start searching at the back.
885            String8 str8(str, strLen);
886            const size_t str8Len = str8.size();
887            for (int i=mHeader->stringCount-1; i>=0; i--) {
888                const char* s = string8At(i, &len);
889                STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
890                             String8(s).string(),
891                             i));
892                if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
893                    STRING_POOL_NOISY(ALOGI("MATCH!"));
894                    return i;
895                }
896            }
897        }
898
899    } else {
900        STRING_POOL_NOISY(ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string()));
901
902        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
903            // Do a binary search for the string...
904            ssize_t l = 0;
905            ssize_t h = mHeader->stringCount-1;
906
907            ssize_t mid;
908            while (l <= h) {
909                mid = l + (h - l)/2;
910                const char16_t* s = stringAt(mid, &len);
911                int c = s ? strzcmp16(s, len, str, strLen) : -1;
912                STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
913                             String8(s).string(),
914                             c, (int)l, (int)mid, (int)h));
915                if (c == 0) {
916                    STRING_POOL_NOISY(ALOGI("MATCH!"));
917                    return mid;
918                } else if (c < 0) {
919                    l = mid + 1;
920                } else {
921                    h = mid - 1;
922                }
923            }
924        } else {
925            // It is unusual to get the ID from an unsorted string block...
926            // most often this happens because we want to get IDs for style
927            // span tags; since those always appear at the end of the string
928            // block, start searching at the back.
929            for (int i=mHeader->stringCount-1; i>=0; i--) {
930                const char16_t* s = stringAt(i, &len);
931                STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
932                             String8(s).string(),
933                             i));
934                if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
935                    STRING_POOL_NOISY(ALOGI("MATCH!"));
936                    return i;
937                }
938            }
939        }
940    }
941
942    return NAME_NOT_FOUND;
943}
944
945size_t ResStringPool::size() const
946{
947    return (mError == NO_ERROR) ? mHeader->stringCount : 0;
948}
949
950size_t ResStringPool::styleCount() const
951{
952    return (mError == NO_ERROR) ? mHeader->styleCount : 0;
953}
954
955size_t ResStringPool::bytes() const
956{
957    return (mError == NO_ERROR) ? mHeader->header.size : 0;
958}
959
960bool ResStringPool::isSorted() const
961{
962    return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
963}
964
965bool ResStringPool::isUTF8() const
966{
967    return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
968}
969
970// --------------------------------------------------------------------
971// --------------------------------------------------------------------
972// --------------------------------------------------------------------
973
974ResXMLParser::ResXMLParser(const ResXMLTree& tree)
975    : mTree(tree), mEventCode(BAD_DOCUMENT)
976{
977}
978
979void ResXMLParser::restart()
980{
981    mCurNode = NULL;
982    mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
983}
984const ResStringPool& ResXMLParser::getStrings() const
985{
986    return mTree.mStrings;
987}
988
989ResXMLParser::event_code_t ResXMLParser::getEventType() const
990{
991    return mEventCode;
992}
993
994ResXMLParser::event_code_t ResXMLParser::next()
995{
996    if (mEventCode == START_DOCUMENT) {
997        mCurNode = mTree.mRootNode;
998        mCurExt = mTree.mRootExt;
999        return (mEventCode=mTree.mRootCode);
1000    } else if (mEventCode >= FIRST_CHUNK_CODE) {
1001        return nextNode();
1002    }
1003    return mEventCode;
1004}
1005
1006int32_t ResXMLParser::getCommentID() const
1007{
1008    return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1009}
1010
1011const uint16_t* ResXMLParser::getComment(size_t* outLen) const
1012{
1013    int32_t id = getCommentID();
1014    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1015}
1016
1017uint32_t ResXMLParser::getLineNumber() const
1018{
1019    return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1020}
1021
1022int32_t ResXMLParser::getTextID() const
1023{
1024    if (mEventCode == TEXT) {
1025        return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1026    }
1027    return -1;
1028}
1029
1030const uint16_t* ResXMLParser::getText(size_t* outLen) const
1031{
1032    int32_t id = getTextID();
1033    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1034}
1035
1036ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1037{
1038    if (mEventCode == TEXT) {
1039        outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1040        return sizeof(Res_value);
1041    }
1042    return BAD_TYPE;
1043}
1044
1045int32_t ResXMLParser::getNamespacePrefixID() const
1046{
1047    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1048        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1049    }
1050    return -1;
1051}
1052
1053const uint16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1054{
1055    int32_t id = getNamespacePrefixID();
1056    //printf("prefix=%d  event=%p\n", id, mEventCode);
1057    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1058}
1059
1060int32_t ResXMLParser::getNamespaceUriID() const
1061{
1062    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1063        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1064    }
1065    return -1;
1066}
1067
1068const uint16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1069{
1070    int32_t id = getNamespaceUriID();
1071    //printf("uri=%d  event=%p\n", id, mEventCode);
1072    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1073}
1074
1075int32_t ResXMLParser::getElementNamespaceID() const
1076{
1077    if (mEventCode == START_TAG) {
1078        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1079    }
1080    if (mEventCode == END_TAG) {
1081        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1082    }
1083    return -1;
1084}
1085
1086const uint16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1087{
1088    int32_t id = getElementNamespaceID();
1089    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1090}
1091
1092int32_t ResXMLParser::getElementNameID() const
1093{
1094    if (mEventCode == START_TAG) {
1095        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1096    }
1097    if (mEventCode == END_TAG) {
1098        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1099    }
1100    return -1;
1101}
1102
1103const uint16_t* ResXMLParser::getElementName(size_t* outLen) const
1104{
1105    int32_t id = getElementNameID();
1106    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1107}
1108
1109size_t ResXMLParser::getAttributeCount() const
1110{
1111    if (mEventCode == START_TAG) {
1112        return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1113    }
1114    return 0;
1115}
1116
1117int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1118{
1119    if (mEventCode == START_TAG) {
1120        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1121        if (idx < dtohs(tag->attributeCount)) {
1122            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1123                (((const uint8_t*)tag)
1124                 + dtohs(tag->attributeStart)
1125                 + (dtohs(tag->attributeSize)*idx));
1126            return dtohl(attr->ns.index);
1127        }
1128    }
1129    return -2;
1130}
1131
1132const uint16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1133{
1134    int32_t id = getAttributeNamespaceID(idx);
1135    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1136    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1137    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1138}
1139
1140const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1141{
1142    int32_t id = getAttributeNamespaceID(idx);
1143    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1144    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1145    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1146}
1147
1148int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1149{
1150    if (mEventCode == START_TAG) {
1151        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1152        if (idx < dtohs(tag->attributeCount)) {
1153            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1154                (((const uint8_t*)tag)
1155                 + dtohs(tag->attributeStart)
1156                 + (dtohs(tag->attributeSize)*idx));
1157            return dtohl(attr->name.index);
1158        }
1159    }
1160    return -1;
1161}
1162
1163const uint16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1164{
1165    int32_t id = getAttributeNameID(idx);
1166    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1167    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1168    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1169}
1170
1171const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1172{
1173    int32_t id = getAttributeNameID(idx);
1174    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1175    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1176    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1177}
1178
1179uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1180{
1181    int32_t id = getAttributeNameID(idx);
1182    if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1183        return dtohl(mTree.mResIds[id]);
1184    }
1185    return 0;
1186}
1187
1188int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1189{
1190    if (mEventCode == START_TAG) {
1191        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1192        if (idx < dtohs(tag->attributeCount)) {
1193            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1194                (((const uint8_t*)tag)
1195                 + dtohs(tag->attributeStart)
1196                 + (dtohs(tag->attributeSize)*idx));
1197            return dtohl(attr->rawValue.index);
1198        }
1199    }
1200    return -1;
1201}
1202
1203const uint16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1204{
1205    int32_t id = getAttributeValueStringID(idx);
1206    //XML_NOISY(printf("getAttributeValue 0x%x=0x%x\n", idx, id));
1207    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1208}
1209
1210int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1211{
1212    if (mEventCode == START_TAG) {
1213        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1214        if (idx < dtohs(tag->attributeCount)) {
1215            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1216                (((const uint8_t*)tag)
1217                 + dtohs(tag->attributeStart)
1218                 + (dtohs(tag->attributeSize)*idx));
1219            uint8_t type = attr->typedValue.dataType;
1220            if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1221                return type;
1222            }
1223
1224            // This is a dynamic reference. We adjust those references
1225            // to regular references at this level, so lie to the caller.
1226            return Res_value::TYPE_REFERENCE;
1227        }
1228    }
1229    return Res_value::TYPE_NULL;
1230}
1231
1232int32_t ResXMLParser::getAttributeData(size_t idx) const
1233{
1234    if (mEventCode == START_TAG) {
1235        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1236        if (idx < dtohs(tag->attributeCount)) {
1237            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1238                (((const uint8_t*)tag)
1239                 + dtohs(tag->attributeStart)
1240                 + (dtohs(tag->attributeSize)*idx));
1241            if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1242                    mTree.mDynamicRefTable == NULL) {
1243                return dtohl(attr->typedValue.data);
1244            }
1245
1246            uint32_t data = dtohl(attr->typedValue.data);
1247            if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1248                return data;
1249            }
1250        }
1251    }
1252    return 0;
1253}
1254
1255ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1256{
1257    if (mEventCode == START_TAG) {
1258        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1259        if (idx < dtohs(tag->attributeCount)) {
1260            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1261                (((const uint8_t*)tag)
1262                 + dtohs(tag->attributeStart)
1263                 + (dtohs(tag->attributeSize)*idx));
1264            outValue->copyFrom_dtoh(attr->typedValue);
1265            if (mTree.mDynamicRefTable != NULL &&
1266                    mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1267                return BAD_TYPE;
1268            }
1269            return sizeof(Res_value);
1270        }
1271    }
1272    return BAD_TYPE;
1273}
1274
1275ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1276{
1277    String16 nsStr(ns != NULL ? ns : "");
1278    String16 attrStr(attr);
1279    return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1280                            attrStr.string(), attrStr.size());
1281}
1282
1283ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1284                                       const char16_t* attr, size_t attrLen) const
1285{
1286    if (mEventCode == START_TAG) {
1287        if (attr == NULL) {
1288            return NAME_NOT_FOUND;
1289        }
1290        const size_t N = getAttributeCount();
1291        if (mTree.mStrings.isUTF8()) {
1292            String8 ns8, attr8;
1293            if (ns != NULL) {
1294                ns8 = String8(ns, nsLen);
1295            }
1296            attr8 = String8(attr, attrLen);
1297            STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF8 %s (%d) / %s (%d)", ns8.string(), nsLen,
1298                    attr8.string(), attrLen));
1299            for (size_t i=0; i<N; i++) {
1300                size_t curNsLen = 0, curAttrLen = 0;
1301                const char* curNs = getAttributeNamespace8(i, &curNsLen);
1302                const char* curAttr = getAttributeName8(i, &curAttrLen);
1303                STRING_POOL_NOISY(ALOGI("  curNs=%s (%d), curAttr=%s (%d)", curNs, curNsLen,
1304                        curAttr, curAttrLen));
1305                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1306                        && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1307                    if (ns == NULL) {
1308                        if (curNs == NULL) {
1309                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1310                            return i;
1311                        }
1312                    } else if (curNs != NULL) {
1313                        //printf(" --> ns=%s, curNs=%s\n",
1314                        //       String8(ns).string(), String8(curNs).string());
1315                        if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1316                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1317                            return i;
1318                        }
1319                    }
1320                }
1321            }
1322        } else {
1323            STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF16 %s (%d) / %s (%d)",
1324                    String8(ns, nsLen).string(), nsLen,
1325                    String8(attr, attrLen).string(), attrLen));
1326            for (size_t i=0; i<N; i++) {
1327                size_t curNsLen = 0, curAttrLen = 0;
1328                const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1329                const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1330                STRING_POOL_NOISY(ALOGI("  curNs=%s (%d), curAttr=%s (%d)",
1331                        String8(curNs, curNsLen).string(), curNsLen,
1332                        String8(curAttr, curAttrLen).string(), curAttrLen));
1333                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1334                        && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1335                    if (ns == NULL) {
1336                        if (curNs == NULL) {
1337                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1338                            return i;
1339                        }
1340                    } else if (curNs != NULL) {
1341                        //printf(" --> ns=%s, curNs=%s\n",
1342                        //       String8(ns).string(), String8(curNs).string());
1343                        if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1344                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1345                            return i;
1346                        }
1347                    }
1348                }
1349            }
1350        }
1351    }
1352
1353    return NAME_NOT_FOUND;
1354}
1355
1356ssize_t ResXMLParser::indexOfID() const
1357{
1358    if (mEventCode == START_TAG) {
1359        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1360        if (idx > 0) return (idx-1);
1361    }
1362    return NAME_NOT_FOUND;
1363}
1364
1365ssize_t ResXMLParser::indexOfClass() const
1366{
1367    if (mEventCode == START_TAG) {
1368        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1369        if (idx > 0) return (idx-1);
1370    }
1371    return NAME_NOT_FOUND;
1372}
1373
1374ssize_t ResXMLParser::indexOfStyle() const
1375{
1376    if (mEventCode == START_TAG) {
1377        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1378        if (idx > 0) return (idx-1);
1379    }
1380    return NAME_NOT_FOUND;
1381}
1382
1383ResXMLParser::event_code_t ResXMLParser::nextNode()
1384{
1385    if (mEventCode < 0) {
1386        return mEventCode;
1387    }
1388
1389    do {
1390        const ResXMLTree_node* next = (const ResXMLTree_node*)
1391            (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1392        //ALOGW("Next node: prev=%p, next=%p\n", mCurNode, next);
1393
1394        if (((const uint8_t*)next) >= mTree.mDataEnd) {
1395            mCurNode = NULL;
1396            return (mEventCode=END_DOCUMENT);
1397        }
1398
1399        if (mTree.validateNode(next) != NO_ERROR) {
1400            mCurNode = NULL;
1401            return (mEventCode=BAD_DOCUMENT);
1402        }
1403
1404        mCurNode = next;
1405        const uint16_t headerSize = dtohs(next->header.headerSize);
1406        const uint32_t totalSize = dtohl(next->header.size);
1407        mCurExt = ((const uint8_t*)next) + headerSize;
1408        size_t minExtSize = 0;
1409        event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1410        switch ((mEventCode=eventCode)) {
1411            case RES_XML_START_NAMESPACE_TYPE:
1412            case RES_XML_END_NAMESPACE_TYPE:
1413                minExtSize = sizeof(ResXMLTree_namespaceExt);
1414                break;
1415            case RES_XML_START_ELEMENT_TYPE:
1416                minExtSize = sizeof(ResXMLTree_attrExt);
1417                break;
1418            case RES_XML_END_ELEMENT_TYPE:
1419                minExtSize = sizeof(ResXMLTree_endElementExt);
1420                break;
1421            case RES_XML_CDATA_TYPE:
1422                minExtSize = sizeof(ResXMLTree_cdataExt);
1423                break;
1424            default:
1425                ALOGW("Unknown XML block: header type %d in node at %d\n",
1426                     (int)dtohs(next->header.type),
1427                     (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1428                continue;
1429        }
1430
1431        if ((totalSize-headerSize) < minExtSize) {
1432            ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1433                 (int)dtohs(next->header.type),
1434                 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1435                 (int)(totalSize-headerSize), (int)minExtSize);
1436            return (mEventCode=BAD_DOCUMENT);
1437        }
1438
1439        //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1440        //       mCurNode, mCurExt, headerSize, minExtSize);
1441
1442        return eventCode;
1443    } while (true);
1444}
1445
1446void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1447{
1448    pos->eventCode = mEventCode;
1449    pos->curNode = mCurNode;
1450    pos->curExt = mCurExt;
1451}
1452
1453void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1454{
1455    mEventCode = pos.eventCode;
1456    mCurNode = pos.curNode;
1457    mCurExt = pos.curExt;
1458}
1459
1460// --------------------------------------------------------------------
1461
1462static volatile int32_t gCount = 0;
1463
1464ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1465    : ResXMLParser(*this)
1466    , mDynamicRefTable(dynamicRefTable)
1467    , mError(NO_INIT), mOwnedData(NULL)
1468{
1469    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1470    restart();
1471}
1472
1473ResXMLTree::ResXMLTree()
1474    : ResXMLParser(*this)
1475    , mDynamicRefTable(NULL)
1476    , mError(NO_INIT), mOwnedData(NULL)
1477{
1478    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1479    restart();
1480}
1481
1482ResXMLTree::~ResXMLTree()
1483{
1484    //ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1485    uninit();
1486}
1487
1488status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1489{
1490    uninit();
1491    mEventCode = START_DOCUMENT;
1492
1493    if (!data || !size) {
1494        return (mError=BAD_TYPE);
1495    }
1496
1497    if (copyData) {
1498        mOwnedData = malloc(size);
1499        if (mOwnedData == NULL) {
1500            return (mError=NO_MEMORY);
1501        }
1502        memcpy(mOwnedData, data, size);
1503        data = mOwnedData;
1504    }
1505
1506    mHeader = (const ResXMLTree_header*)data;
1507    mSize = dtohl(mHeader->header.size);
1508    if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1509        ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1510             (int)dtohs(mHeader->header.headerSize),
1511             (int)dtohl(mHeader->header.size), (int)size);
1512        mError = BAD_TYPE;
1513        restart();
1514        return mError;
1515    }
1516    mDataEnd = ((const uint8_t*)mHeader) + mSize;
1517
1518    mStrings.uninit();
1519    mRootNode = NULL;
1520    mResIds = NULL;
1521    mNumResIds = 0;
1522
1523    // First look for a couple interesting chunks: the string block
1524    // and first XML node.
1525    const ResChunk_header* chunk =
1526        (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1527    const ResChunk_header* lastChunk = chunk;
1528    while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1529           ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1530        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1531        if (err != NO_ERROR) {
1532            mError = err;
1533            goto done;
1534        }
1535        const uint16_t type = dtohs(chunk->type);
1536        const size_t size = dtohl(chunk->size);
1537        XML_NOISY(printf("Scanning @ %p: type=0x%x, size=0x%x\n",
1538                     (void*)(((uint32_t)chunk)-((uint32_t)mHeader)), type, size));
1539        if (type == RES_STRING_POOL_TYPE) {
1540            mStrings.setTo(chunk, size);
1541        } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1542            mResIds = (const uint32_t*)
1543                (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1544            mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1545        } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1546                   && type <= RES_XML_LAST_CHUNK_TYPE) {
1547            if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1548                mError = BAD_TYPE;
1549                goto done;
1550            }
1551            mCurNode = (const ResXMLTree_node*)lastChunk;
1552            if (nextNode() == BAD_DOCUMENT) {
1553                mError = BAD_TYPE;
1554                goto done;
1555            }
1556            mRootNode = mCurNode;
1557            mRootExt = mCurExt;
1558            mRootCode = mEventCode;
1559            break;
1560        } else {
1561            XML_NOISY(printf("Skipping unknown chunk!\n"));
1562        }
1563        lastChunk = chunk;
1564        chunk = (const ResChunk_header*)
1565            (((const uint8_t*)chunk) + size);
1566    }
1567
1568    if (mRootNode == NULL) {
1569        ALOGW("Bad XML block: no root element node found\n");
1570        mError = BAD_TYPE;
1571        goto done;
1572    }
1573
1574    mError = mStrings.getError();
1575
1576done:
1577    restart();
1578    return mError;
1579}
1580
1581status_t ResXMLTree::getError() const
1582{
1583    return mError;
1584}
1585
1586void ResXMLTree::uninit()
1587{
1588    mError = NO_INIT;
1589    mStrings.uninit();
1590    if (mOwnedData) {
1591        free(mOwnedData);
1592        mOwnedData = NULL;
1593    }
1594    restart();
1595}
1596
1597status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1598{
1599    const uint16_t eventCode = dtohs(node->header.type);
1600
1601    status_t err = validate_chunk(
1602        &node->header, sizeof(ResXMLTree_node),
1603        mDataEnd, "ResXMLTree_node");
1604
1605    if (err >= NO_ERROR) {
1606        // Only perform additional validation on START nodes
1607        if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1608            return NO_ERROR;
1609        }
1610
1611        const uint16_t headerSize = dtohs(node->header.headerSize);
1612        const uint32_t size = dtohl(node->header.size);
1613        const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1614            (((const uint8_t*)node) + headerSize);
1615        // check for sensical values pulled out of the stream so far...
1616        if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1617                && ((void*)attrExt > (void*)node)) {
1618            const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1619                * dtohs(attrExt->attributeCount);
1620            if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1621                return NO_ERROR;
1622            }
1623            ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1624                    (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1625                    (unsigned int)(size-headerSize));
1626        }
1627        else {
1628            ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1629                (unsigned int)headerSize, (unsigned int)size);
1630        }
1631        return BAD_TYPE;
1632    }
1633
1634    return err;
1635
1636#if 0
1637    const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1638
1639    const uint16_t headerSize = dtohs(node->header.headerSize);
1640    const uint32_t size = dtohl(node->header.size);
1641
1642    if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1643        if (size >= headerSize) {
1644            if (((const uint8_t*)node) <= (mDataEnd-size)) {
1645                if (!isStart) {
1646                    return NO_ERROR;
1647                }
1648                if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1649                        <= (size-headerSize)) {
1650                    return NO_ERROR;
1651                }
1652                ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1653                        ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1654                        (int)(size-headerSize));
1655                return BAD_TYPE;
1656            }
1657            ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1658                    (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1659            return BAD_TYPE;
1660        }
1661        ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1662                (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1663                (int)headerSize, (int)size);
1664        return BAD_TYPE;
1665    }
1666    ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1667            (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1668            (int)headerSize);
1669    return BAD_TYPE;
1670#endif
1671}
1672
1673// --------------------------------------------------------------------
1674// --------------------------------------------------------------------
1675// --------------------------------------------------------------------
1676
1677void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1678    const size_t size = dtohl(o.size);
1679    if (size >= sizeof(ResTable_config)) {
1680        *this = o;
1681    } else {
1682        memcpy(this, &o, size);
1683        memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1684    }
1685}
1686
1687/* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1688        char out[4]) {
1689  if (in[0] & 0x80) {
1690      // The high bit is "1", which means this is a packed three letter
1691      // language code.
1692
1693      // The smallest 5 bits of the second char are the first alphabet.
1694      const uint8_t first = in[1] & 0x1f;
1695      // The last three bits of the second char and the first two bits
1696      // of the first char are the second alphabet.
1697      const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1698      // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1699      const uint8_t third = (in[0] & 0x7c) >> 2;
1700
1701      out[0] = first + base;
1702      out[1] = second + base;
1703      out[2] = third + base;
1704      out[3] = 0;
1705
1706      return 3;
1707  }
1708
1709  if (in[0]) {
1710      memcpy(out, in, 2);
1711      memset(out + 2, 0, 2);
1712      return 2;
1713  }
1714
1715  memset(out, 0, 4);
1716  return 0;
1717}
1718
1719/* static */ void packLanguageOrRegion(const char* in, const char base,
1720        char out[2]) {
1721  if (in[2] == 0 || in[2] == '-') {
1722      out[0] = in[0];
1723      out[1] = in[1];
1724  } else {
1725      uint8_t first = (in[0] - base) & 0x007f;
1726      uint8_t second = (in[1] - base) & 0x007f;
1727      uint8_t third = (in[2] - base) & 0x007f;
1728
1729      out[0] = (0x80 | (third << 2) | (second >> 3));
1730      out[1] = ((second << 5) | first);
1731  }
1732}
1733
1734
1735void ResTable_config::packLanguage(const char* language) {
1736    packLanguageOrRegion(language, 'a', this->language);
1737}
1738
1739void ResTable_config::packRegion(const char* region) {
1740    packLanguageOrRegion(region, '0', this->country);
1741}
1742
1743size_t ResTable_config::unpackLanguage(char language[4]) const {
1744    return unpackLanguageOrRegion(this->language, 'a', language);
1745}
1746
1747size_t ResTable_config::unpackRegion(char region[4]) const {
1748    return unpackLanguageOrRegion(this->country, '0', region);
1749}
1750
1751
1752void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1753    copyFromDeviceNoSwap(o);
1754    size = sizeof(ResTable_config);
1755    mcc = dtohs(mcc);
1756    mnc = dtohs(mnc);
1757    density = dtohs(density);
1758    screenWidth = dtohs(screenWidth);
1759    screenHeight = dtohs(screenHeight);
1760    sdkVersion = dtohs(sdkVersion);
1761    minorVersion = dtohs(minorVersion);
1762    smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1763    screenWidthDp = dtohs(screenWidthDp);
1764    screenHeightDp = dtohs(screenHeightDp);
1765}
1766
1767void ResTable_config::swapHtoD() {
1768    size = htodl(size);
1769    mcc = htods(mcc);
1770    mnc = htods(mnc);
1771    density = htods(density);
1772    screenWidth = htods(screenWidth);
1773    screenHeight = htods(screenHeight);
1774    sdkVersion = htods(sdkVersion);
1775    minorVersion = htods(minorVersion);
1776    smallestScreenWidthDp = htods(smallestScreenWidthDp);
1777    screenWidthDp = htods(screenWidthDp);
1778    screenHeightDp = htods(screenHeightDp);
1779}
1780
1781/* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1782    if (l.locale != r.locale) {
1783        // NOTE: This is the old behaviour with respect to comparison orders.
1784        // The diff value here doesn't make much sense (given our bit packing scheme)
1785        // but it's stable, and that's all we need.
1786        return l.locale - r.locale;
1787    }
1788
1789    // The language & region are equal, so compare the scripts and variants.
1790    int script = memcmp(l.localeScript, r.localeScript, sizeof(l.localeScript));
1791    if (script) {
1792        return script;
1793    }
1794
1795    // The language, region and script are equal, so compare variants.
1796    //
1797    // This should happen very infrequently (if at all.)
1798    return memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1799}
1800
1801int ResTable_config::compare(const ResTable_config& o) const {
1802    int32_t diff = (int32_t)(imsi - o.imsi);
1803    if (diff != 0) return diff;
1804    diff = compareLocales(*this, o);
1805    if (diff != 0) return diff;
1806    diff = (int32_t)(screenType - o.screenType);
1807    if (diff != 0) return diff;
1808    diff = (int32_t)(input - o.input);
1809    if (diff != 0) return diff;
1810    diff = (int32_t)(screenSize - o.screenSize);
1811    if (diff != 0) return diff;
1812    diff = (int32_t)(version - o.version);
1813    if (diff != 0) return diff;
1814    diff = (int32_t)(screenLayout - o.screenLayout);
1815    if (diff != 0) return diff;
1816    diff = (int32_t)(uiMode - o.uiMode);
1817    if (diff != 0) return diff;
1818    diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1819    if (diff != 0) return diff;
1820    diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1821    return (int)diff;
1822}
1823
1824int ResTable_config::compareLogical(const ResTable_config& o) const {
1825    if (mcc != o.mcc) {
1826        return mcc < o.mcc ? -1 : 1;
1827    }
1828    if (mnc != o.mnc) {
1829        return mnc < o.mnc ? -1 : 1;
1830    }
1831
1832    int diff = compareLocales(*this, o);
1833    if (diff < 0) {
1834        return -1;
1835    }
1836    if (diff > 0) {
1837        return 1;
1838    }
1839
1840    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1841        return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1842    }
1843    if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1844        return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1845    }
1846    if (screenWidthDp != o.screenWidthDp) {
1847        return screenWidthDp < o.screenWidthDp ? -1 : 1;
1848    }
1849    if (screenHeightDp != o.screenHeightDp) {
1850        return screenHeightDp < o.screenHeightDp ? -1 : 1;
1851    }
1852    if (screenWidth != o.screenWidth) {
1853        return screenWidth < o.screenWidth ? -1 : 1;
1854    }
1855    if (screenHeight != o.screenHeight) {
1856        return screenHeight < o.screenHeight ? -1 : 1;
1857    }
1858    if (density != o.density) {
1859        return density < o.density ? -1 : 1;
1860    }
1861    if (orientation != o.orientation) {
1862        return orientation < o.orientation ? -1 : 1;
1863    }
1864    if (touchscreen != o.touchscreen) {
1865        return touchscreen < o.touchscreen ? -1 : 1;
1866    }
1867    if (input != o.input) {
1868        return input < o.input ? -1 : 1;
1869    }
1870    if (screenLayout != o.screenLayout) {
1871        return screenLayout < o.screenLayout ? -1 : 1;
1872    }
1873    if (uiMode != o.uiMode) {
1874        return uiMode < o.uiMode ? -1 : 1;
1875    }
1876    if (version != o.version) {
1877        return version < o.version ? -1 : 1;
1878    }
1879    return 0;
1880}
1881
1882int ResTable_config::diff(const ResTable_config& o) const {
1883    int diffs = 0;
1884    if (mcc != o.mcc) diffs |= CONFIG_MCC;
1885    if (mnc != o.mnc) diffs |= CONFIG_MNC;
1886    if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1887    if (density != o.density) diffs |= CONFIG_DENSITY;
1888    if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1889    if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1890            diffs |= CONFIG_KEYBOARD_HIDDEN;
1891    if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1892    if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1893    if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1894    if (version != o.version) diffs |= CONFIG_VERSION;
1895    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
1896    if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
1897    if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1898    if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1899    if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1900
1901    const int diff = compareLocales(*this, o);
1902    if (diff) diffs |= CONFIG_LOCALE;
1903
1904    return diffs;
1905}
1906
1907int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
1908    if (locale || o.locale) {
1909        if (language[0] != o.language[0]) {
1910            if (!language[0]) return -1;
1911            if (!o.language[0]) return 1;
1912        }
1913
1914        if (country[0] != o.country[0]) {
1915            if (!country[0]) return -1;
1916            if (!o.country[0]) return 1;
1917        }
1918    }
1919
1920    // There isn't a well specified "importance" order between variants and
1921    // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
1922    // specific than "en-US-POSIX".
1923    //
1924    // We therefore arbitrarily decide to give priority to variants over
1925    // scripts since it seems more useful to do so. We will consider
1926    // "en-US-POSIX" to be more specific than "en-Latn-US".
1927
1928    const int score = ((localeScript[0] != 0) ? 1 : 0) +
1929        ((localeVariant[0] != 0) ? 2 : 0);
1930
1931    const int oScore = ((o.localeScript[0] != 0) ? 1 : 0) +
1932        ((o.localeVariant[0] != 0) ? 2 : 0);
1933
1934    return score - oScore;
1935
1936}
1937
1938bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
1939    // The order of the following tests defines the importance of one
1940    // configuration parameter over another.  Those tests first are more
1941    // important, trumping any values in those following them.
1942    if (imsi || o.imsi) {
1943        if (mcc != o.mcc) {
1944            if (!mcc) return false;
1945            if (!o.mcc) return true;
1946        }
1947
1948        if (mnc != o.mnc) {
1949            if (!mnc) return false;
1950            if (!o.mnc) return true;
1951        }
1952    }
1953
1954    if (locale || o.locale) {
1955        const int diff = isLocaleMoreSpecificThan(o);
1956        if (diff < 0) {
1957            return false;
1958        }
1959
1960        if (diff > 0) {
1961            return true;
1962        }
1963    }
1964
1965    if (screenLayout || o.screenLayout) {
1966        if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
1967            if (!(screenLayout & MASK_LAYOUTDIR)) return false;
1968            if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
1969        }
1970    }
1971
1972    if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1973        if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1974            if (!smallestScreenWidthDp) return false;
1975            if (!o.smallestScreenWidthDp) return true;
1976        }
1977    }
1978
1979    if (screenSizeDp || o.screenSizeDp) {
1980        if (screenWidthDp != o.screenWidthDp) {
1981            if (!screenWidthDp) return false;
1982            if (!o.screenWidthDp) return true;
1983        }
1984
1985        if (screenHeightDp != o.screenHeightDp) {
1986            if (!screenHeightDp) return false;
1987            if (!o.screenHeightDp) return true;
1988        }
1989    }
1990
1991    if (screenLayout || o.screenLayout) {
1992        if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
1993            if (!(screenLayout & MASK_SCREENSIZE)) return false;
1994            if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
1995        }
1996        if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
1997            if (!(screenLayout & MASK_SCREENLONG)) return false;
1998            if (!(o.screenLayout & MASK_SCREENLONG)) return true;
1999        }
2000    }
2001
2002    if (orientation != o.orientation) {
2003        if (!orientation) return false;
2004        if (!o.orientation) return true;
2005    }
2006
2007    if (uiMode || o.uiMode) {
2008        if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2009            if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2010            if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2011        }
2012        if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2013            if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2014            if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2015        }
2016    }
2017
2018    // density is never 'more specific'
2019    // as the default just equals 160
2020
2021    if (touchscreen != o.touchscreen) {
2022        if (!touchscreen) return false;
2023        if (!o.touchscreen) return true;
2024    }
2025
2026    if (input || o.input) {
2027        if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2028            if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2029            if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2030        }
2031
2032        if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2033            if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2034            if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2035        }
2036
2037        if (keyboard != o.keyboard) {
2038            if (!keyboard) return false;
2039            if (!o.keyboard) return true;
2040        }
2041
2042        if (navigation != o.navigation) {
2043            if (!navigation) return false;
2044            if (!o.navigation) return true;
2045        }
2046    }
2047
2048    if (screenSize || o.screenSize) {
2049        if (screenWidth != o.screenWidth) {
2050            if (!screenWidth) return false;
2051            if (!o.screenWidth) return true;
2052        }
2053
2054        if (screenHeight != o.screenHeight) {
2055            if (!screenHeight) return false;
2056            if (!o.screenHeight) return true;
2057        }
2058    }
2059
2060    if (version || o.version) {
2061        if (sdkVersion != o.sdkVersion) {
2062            if (!sdkVersion) return false;
2063            if (!o.sdkVersion) return true;
2064        }
2065
2066        if (minorVersion != o.minorVersion) {
2067            if (!minorVersion) return false;
2068            if (!o.minorVersion) return true;
2069        }
2070    }
2071    return false;
2072}
2073
2074bool ResTable_config::isBetterThan(const ResTable_config& o,
2075        const ResTable_config* requested) const {
2076    if (requested) {
2077        if (imsi || o.imsi) {
2078            if ((mcc != o.mcc) && requested->mcc) {
2079                return (mcc);
2080            }
2081
2082            if ((mnc != o.mnc) && requested->mnc) {
2083                return (mnc);
2084            }
2085        }
2086
2087        if (locale || o.locale) {
2088            if ((language[0] != o.language[0]) && requested->language[0]) {
2089                return (language[0]);
2090            }
2091
2092            if ((country[0] != o.country[0]) && requested->country[0]) {
2093                return (country[0]);
2094            }
2095        }
2096
2097        if (localeScript[0] || o.localeScript[0]) {
2098            if (localeScript[0] != o.localeScript[0] && requested->localeScript[0]) {
2099                return localeScript[0];
2100            }
2101        }
2102
2103        if (localeVariant[0] || o.localeVariant[0]) {
2104            if (localeVariant[0] != o.localeVariant[0] && requested->localeVariant[0]) {
2105                return localeVariant[0];
2106            }
2107        }
2108
2109        if (screenLayout || o.screenLayout) {
2110            if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2111                    && (requested->screenLayout & MASK_LAYOUTDIR)) {
2112                int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2113                int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2114                return (myLayoutDir > oLayoutDir);
2115            }
2116        }
2117
2118        if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2119            // The configuration closest to the actual size is best.
2120            // We assume that larger configs have already been filtered
2121            // out at this point.  That means we just want the largest one.
2122            if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2123                return smallestScreenWidthDp > o.smallestScreenWidthDp;
2124            }
2125        }
2126
2127        if (screenSizeDp || o.screenSizeDp) {
2128            // "Better" is based on the sum of the difference between both
2129            // width and height from the requested dimensions.  We are
2130            // assuming the invalid configs (with smaller dimens) have
2131            // already been filtered.  Note that if a particular dimension
2132            // is unspecified, we will end up with a large value (the
2133            // difference between 0 and the requested dimension), which is
2134            // good since we will prefer a config that has specified a
2135            // dimension value.
2136            int myDelta = 0, otherDelta = 0;
2137            if (requested->screenWidthDp) {
2138                myDelta += requested->screenWidthDp - screenWidthDp;
2139                otherDelta += requested->screenWidthDp - o.screenWidthDp;
2140            }
2141            if (requested->screenHeightDp) {
2142                myDelta += requested->screenHeightDp - screenHeightDp;
2143                otherDelta += requested->screenHeightDp - o.screenHeightDp;
2144            }
2145            //ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2146            //    screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2147            //    requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2148            if (myDelta != otherDelta) {
2149                return myDelta < otherDelta;
2150            }
2151        }
2152
2153        if (screenLayout || o.screenLayout) {
2154            if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2155                    && (requested->screenLayout & MASK_SCREENSIZE)) {
2156                // A little backwards compatibility here: undefined is
2157                // considered equivalent to normal.  But only if the
2158                // requested size is at least normal; otherwise, small
2159                // is better than the default.
2160                int mySL = (screenLayout & MASK_SCREENSIZE);
2161                int oSL = (o.screenLayout & MASK_SCREENSIZE);
2162                int fixedMySL = mySL;
2163                int fixedOSL = oSL;
2164                if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2165                    if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2166                    if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2167                }
2168                // For screen size, the best match is the one that is
2169                // closest to the requested screen size, but not over
2170                // (the not over part is dealt with in match() below).
2171                if (fixedMySL == fixedOSL) {
2172                    // If the two are the same, but 'this' is actually
2173                    // undefined, then the other is really a better match.
2174                    if (mySL == 0) return false;
2175                    return true;
2176                }
2177                if (fixedMySL != fixedOSL) {
2178                    return fixedMySL > fixedOSL;
2179                }
2180            }
2181            if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2182                    && (requested->screenLayout & MASK_SCREENLONG)) {
2183                return (screenLayout & MASK_SCREENLONG);
2184            }
2185        }
2186
2187        if ((orientation != o.orientation) && requested->orientation) {
2188            return (orientation);
2189        }
2190
2191        if (uiMode || o.uiMode) {
2192            if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2193                    && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2194                return (uiMode & MASK_UI_MODE_TYPE);
2195            }
2196            if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2197                    && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2198                return (uiMode & MASK_UI_MODE_NIGHT);
2199            }
2200        }
2201
2202        if (screenType || o.screenType) {
2203            if (density != o.density) {
2204                // density is tough.  Any density is potentially useful
2205                // because the system will scale it.  Scaling down
2206                // is generally better than scaling up.
2207                // Default density counts as 160dpi (the system default)
2208                // TODO - remove 160 constants
2209                int h = (density?density:160);
2210                int l = (o.density?o.density:160);
2211                bool bImBigger = true;
2212                if (l > h) {
2213                    int t = h;
2214                    h = l;
2215                    l = t;
2216                    bImBigger = false;
2217                }
2218
2219                int reqValue = (requested->density?requested->density:160);
2220                if (reqValue >= h) {
2221                    // requested value higher than both l and h, give h
2222                    return bImBigger;
2223                }
2224                if (l >= reqValue) {
2225                    // requested value lower than both l and h, give l
2226                    return !bImBigger;
2227                }
2228                // saying that scaling down is 2x better than up
2229                if (((2 * l) - reqValue) * h > reqValue * reqValue) {
2230                    return !bImBigger;
2231                } else {
2232                    return bImBigger;
2233                }
2234            }
2235
2236            if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2237                return (touchscreen);
2238            }
2239        }
2240
2241        if (input || o.input) {
2242            const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2243            const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2244            if (keysHidden != oKeysHidden) {
2245                const int reqKeysHidden =
2246                        requested->inputFlags & MASK_KEYSHIDDEN;
2247                if (reqKeysHidden) {
2248
2249                    if (!keysHidden) return false;
2250                    if (!oKeysHidden) return true;
2251                    // For compatibility, we count KEYSHIDDEN_NO as being
2252                    // the same as KEYSHIDDEN_SOFT.  Here we disambiguate
2253                    // these by making an exact match more specific.
2254                    if (reqKeysHidden == keysHidden) return true;
2255                    if (reqKeysHidden == oKeysHidden) return false;
2256                }
2257            }
2258
2259            const int navHidden = inputFlags & MASK_NAVHIDDEN;
2260            const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2261            if (navHidden != oNavHidden) {
2262                const int reqNavHidden =
2263                        requested->inputFlags & MASK_NAVHIDDEN;
2264                if (reqNavHidden) {
2265
2266                    if (!navHidden) return false;
2267                    if (!oNavHidden) return true;
2268                }
2269            }
2270
2271            if ((keyboard != o.keyboard) && requested->keyboard) {
2272                return (keyboard);
2273            }
2274
2275            if ((navigation != o.navigation) && requested->navigation) {
2276                return (navigation);
2277            }
2278        }
2279
2280        if (screenSize || o.screenSize) {
2281            // "Better" is based on the sum of the difference between both
2282            // width and height from the requested dimensions.  We are
2283            // assuming the invalid configs (with smaller sizes) have
2284            // already been filtered.  Note that if a particular dimension
2285            // is unspecified, we will end up with a large value (the
2286            // difference between 0 and the requested dimension), which is
2287            // good since we will prefer a config that has specified a
2288            // size value.
2289            int myDelta = 0, otherDelta = 0;
2290            if (requested->screenWidth) {
2291                myDelta += requested->screenWidth - screenWidth;
2292                otherDelta += requested->screenWidth - o.screenWidth;
2293            }
2294            if (requested->screenHeight) {
2295                myDelta += requested->screenHeight - screenHeight;
2296                otherDelta += requested->screenHeight - o.screenHeight;
2297            }
2298            if (myDelta != otherDelta) {
2299                return myDelta < otherDelta;
2300            }
2301        }
2302
2303        if (version || o.version) {
2304            if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2305                return (sdkVersion > o.sdkVersion);
2306            }
2307
2308            if ((minorVersion != o.minorVersion) &&
2309                    requested->minorVersion) {
2310                return (minorVersion);
2311            }
2312        }
2313
2314        return false;
2315    }
2316    return isMoreSpecificThan(o);
2317}
2318
2319bool ResTable_config::match(const ResTable_config& settings) const {
2320    if (imsi != 0) {
2321        if (mcc != 0 && mcc != settings.mcc) {
2322            return false;
2323        }
2324        if (mnc != 0 && mnc != settings.mnc) {
2325            return false;
2326        }
2327    }
2328    if (locale != 0) {
2329        // Don't consider the script & variants when deciding matches.
2330        //
2331        // If we two configs differ only in their script or language, they
2332        // can be weeded out in the isMoreSpecificThan test.
2333        if (language[0] != 0
2334            && (language[0] != settings.language[0]
2335                || language[1] != settings.language[1])) {
2336            return false;
2337        }
2338
2339        if (country[0] != 0
2340            && (country[0] != settings.country[0]
2341                || country[1] != settings.country[1])) {
2342            return false;
2343        }
2344    }
2345
2346    if (screenConfig != 0) {
2347        const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2348        const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2349        if (layoutDir != 0 && layoutDir != setLayoutDir) {
2350            return false;
2351        }
2352
2353        const int screenSize = screenLayout&MASK_SCREENSIZE;
2354        const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2355        // Any screen sizes for larger screens than the setting do not
2356        // match.
2357        if (screenSize != 0 && screenSize > setScreenSize) {
2358            return false;
2359        }
2360
2361        const int screenLong = screenLayout&MASK_SCREENLONG;
2362        const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2363        if (screenLong != 0 && screenLong != setScreenLong) {
2364            return false;
2365        }
2366
2367        const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2368        const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2369        if (uiModeType != 0 && uiModeType != setUiModeType) {
2370            return false;
2371        }
2372
2373        const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2374        const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2375        if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2376            return false;
2377        }
2378
2379        if (smallestScreenWidthDp != 0
2380                && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2381            return false;
2382        }
2383    }
2384    if (screenSizeDp != 0) {
2385        if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2386            //ALOGI("Filtering out width %d in requested %d", screenWidthDp, settings.screenWidthDp);
2387            return false;
2388        }
2389        if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2390            //ALOGI("Filtering out height %d in requested %d", screenHeightDp, settings.screenHeightDp);
2391            return false;
2392        }
2393    }
2394    if (screenType != 0) {
2395        if (orientation != 0 && orientation != settings.orientation) {
2396            return false;
2397        }
2398        // density always matches - we can scale it.  See isBetterThan
2399        if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2400            return false;
2401        }
2402    }
2403    if (input != 0) {
2404        const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2405        const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2406        if (keysHidden != 0 && keysHidden != setKeysHidden) {
2407            // For compatibility, we count a request for KEYSHIDDEN_NO as also
2408            // matching the more recent KEYSHIDDEN_SOFT.  Basically
2409            // KEYSHIDDEN_NO means there is some kind of keyboard available.
2410            //ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2411            if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2412                //ALOGI("No match!");
2413                return false;
2414            }
2415        }
2416        const int navHidden = inputFlags&MASK_NAVHIDDEN;
2417        const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2418        if (navHidden != 0 && navHidden != setNavHidden) {
2419            return false;
2420        }
2421        if (keyboard != 0 && keyboard != settings.keyboard) {
2422            return false;
2423        }
2424        if (navigation != 0 && navigation != settings.navigation) {
2425            return false;
2426        }
2427    }
2428    if (screenSize != 0) {
2429        if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2430            return false;
2431        }
2432        if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2433            return false;
2434        }
2435    }
2436    if (version != 0) {
2437        if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2438            return false;
2439        }
2440        if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2441            return false;
2442        }
2443    }
2444    return true;
2445}
2446
2447void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const {
2448    memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2449
2450    // This represents the "any" locale value, which has traditionally been
2451    // represented by the empty string.
2452    if (!language[0] && !country[0]) {
2453        return;
2454    }
2455
2456    size_t charsWritten = 0;
2457    if (language[0]) {
2458        charsWritten += unpackLanguage(str);
2459    }
2460
2461    if (localeScript[0]) {
2462        if (charsWritten) {
2463            str[charsWritten++] = '-';
2464        }
2465        memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2466        charsWritten += sizeof(localeScript);
2467    }
2468
2469    if (country[0]) {
2470        if (charsWritten) {
2471            str[charsWritten++] = '-';
2472        }
2473        charsWritten += unpackRegion(str + charsWritten);
2474    }
2475
2476    if (localeVariant[0]) {
2477        if (charsWritten) {
2478            str[charsWritten++] = '-';
2479        }
2480        memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2481    }
2482}
2483
2484/* static */ inline bool assignLocaleComponent(ResTable_config* config,
2485        const char* start, size_t size) {
2486
2487  switch (size) {
2488       case 0:
2489           return false;
2490       case 2:
2491       case 3:
2492           config->language[0] ? config->packRegion(start) : config->packLanguage(start);
2493           break;
2494       case 4:
2495           config->localeScript[0] = toupper(start[0]);
2496           for (size_t i = 1; i < 4; ++i) {
2497               config->localeScript[i] = tolower(start[i]);
2498           }
2499           break;
2500       case 5:
2501       case 6:
2502       case 7:
2503       case 8:
2504           for (size_t i = 0; i < size; ++i) {
2505               config->localeVariant[i] = tolower(start[i]);
2506           }
2507           break;
2508       default:
2509           return false;
2510  }
2511
2512  return true;
2513}
2514
2515void ResTable_config::setBcp47Locale(const char* in) {
2516    locale = 0;
2517    memset(localeScript, 0, sizeof(localeScript));
2518    memset(localeVariant, 0, sizeof(localeVariant));
2519
2520    const char* separator = in;
2521    const char* start = in;
2522    while ((separator = strchr(start, '-')) != NULL) {
2523        const size_t size = separator - start;
2524        if (!assignLocaleComponent(this, start, size)) {
2525            fprintf(stderr, "Invalid BCP-47 locale string: %s", in);
2526        }
2527
2528        start = (separator + 1);
2529    }
2530
2531    const size_t size = in + strlen(in) - start;
2532    assignLocaleComponent(this, start, size);
2533}
2534
2535String8 ResTable_config::toString() const {
2536    String8 res;
2537
2538    if (mcc != 0) {
2539        if (res.size() > 0) res.append("-");
2540        res.appendFormat("mcc%d", dtohs(mcc));
2541    }
2542    if (mnc != 0) {
2543        if (res.size() > 0) res.append("-");
2544        res.appendFormat("mnc%d", dtohs(mnc));
2545    }
2546
2547    char localeStr[RESTABLE_MAX_LOCALE_LEN];
2548    getBcp47Locale(localeStr);
2549    if (strlen(localeStr) > 0) {
2550        if (res.size() > 0) res.append("-");
2551        res.append(localeStr);
2552    }
2553
2554    if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2555        if (res.size() > 0) res.append("-");
2556        switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2557            case ResTable_config::LAYOUTDIR_LTR:
2558                res.append("ldltr");
2559                break;
2560            case ResTable_config::LAYOUTDIR_RTL:
2561                res.append("ldrtl");
2562                break;
2563            default:
2564                res.appendFormat("layoutDir=%d",
2565                        dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2566                break;
2567        }
2568    }
2569    if (smallestScreenWidthDp != 0) {
2570        if (res.size() > 0) res.append("-");
2571        res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2572    }
2573    if (screenWidthDp != 0) {
2574        if (res.size() > 0) res.append("-");
2575        res.appendFormat("w%ddp", dtohs(screenWidthDp));
2576    }
2577    if (screenHeightDp != 0) {
2578        if (res.size() > 0) res.append("-");
2579        res.appendFormat("h%ddp", dtohs(screenHeightDp));
2580    }
2581    if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2582        if (res.size() > 0) res.append("-");
2583        switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2584            case ResTable_config::SCREENSIZE_SMALL:
2585                res.append("small");
2586                break;
2587            case ResTable_config::SCREENSIZE_NORMAL:
2588                res.append("normal");
2589                break;
2590            case ResTable_config::SCREENSIZE_LARGE:
2591                res.append("large");
2592                break;
2593            case ResTable_config::SCREENSIZE_XLARGE:
2594                res.append("xlarge");
2595                break;
2596            default:
2597                res.appendFormat("screenLayoutSize=%d",
2598                        dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2599                break;
2600        }
2601    }
2602    if ((screenLayout&MASK_SCREENLONG) != 0) {
2603        if (res.size() > 0) res.append("-");
2604        switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2605            case ResTable_config::SCREENLONG_NO:
2606                res.append("notlong");
2607                break;
2608            case ResTable_config::SCREENLONG_YES:
2609                res.append("long");
2610                break;
2611            default:
2612                res.appendFormat("screenLayoutLong=%d",
2613                        dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2614                break;
2615        }
2616    }
2617    if (orientation != ORIENTATION_ANY) {
2618        if (res.size() > 0) res.append("-");
2619        switch (orientation) {
2620            case ResTable_config::ORIENTATION_PORT:
2621                res.append("port");
2622                break;
2623            case ResTable_config::ORIENTATION_LAND:
2624                res.append("land");
2625                break;
2626            case ResTable_config::ORIENTATION_SQUARE:
2627                res.append("square");
2628                break;
2629            default:
2630                res.appendFormat("orientation=%d", dtohs(orientation));
2631                break;
2632        }
2633    }
2634    if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2635        if (res.size() > 0) res.append("-");
2636        switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2637            case ResTable_config::UI_MODE_TYPE_DESK:
2638                res.append("desk");
2639                break;
2640            case ResTable_config::UI_MODE_TYPE_CAR:
2641                res.append("car");
2642                break;
2643            case ResTable_config::UI_MODE_TYPE_TELEVISION:
2644                res.append("television");
2645                break;
2646            case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2647                res.append("appliance");
2648                break;
2649            case ResTable_config::UI_MODE_TYPE_WATCH:
2650                res.append("watch");
2651                break;
2652            default:
2653                res.appendFormat("uiModeType=%d",
2654                        dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2655                break;
2656        }
2657    }
2658    if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2659        if (res.size() > 0) res.append("-");
2660        switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2661            case ResTable_config::UI_MODE_NIGHT_NO:
2662                res.append("notnight");
2663                break;
2664            case ResTable_config::UI_MODE_NIGHT_YES:
2665                res.append("night");
2666                break;
2667            default:
2668                res.appendFormat("uiModeNight=%d",
2669                        dtohs(uiMode&MASK_UI_MODE_NIGHT));
2670                break;
2671        }
2672    }
2673    if (density != DENSITY_DEFAULT) {
2674        if (res.size() > 0) res.append("-");
2675        switch (density) {
2676            case ResTable_config::DENSITY_LOW:
2677                res.append("ldpi");
2678                break;
2679            case ResTable_config::DENSITY_MEDIUM:
2680                res.append("mdpi");
2681                break;
2682            case ResTable_config::DENSITY_TV:
2683                res.append("tvdpi");
2684                break;
2685            case ResTable_config::DENSITY_HIGH:
2686                res.append("hdpi");
2687                break;
2688            case ResTable_config::DENSITY_XHIGH:
2689                res.append("xhdpi");
2690                break;
2691            case ResTable_config::DENSITY_XXHIGH:
2692                res.append("xxhdpi");
2693                break;
2694            case ResTable_config::DENSITY_XXXHIGH:
2695                res.append("xxxhdpi");
2696                break;
2697            case ResTable_config::DENSITY_NONE:
2698                res.append("nodpi");
2699                break;
2700            default:
2701                res.appendFormat("%ddpi", dtohs(density));
2702                break;
2703        }
2704    }
2705    if (touchscreen != TOUCHSCREEN_ANY) {
2706        if (res.size() > 0) res.append("-");
2707        switch (touchscreen) {
2708            case ResTable_config::TOUCHSCREEN_NOTOUCH:
2709                res.append("notouch");
2710                break;
2711            case ResTable_config::TOUCHSCREEN_FINGER:
2712                res.append("finger");
2713                break;
2714            case ResTable_config::TOUCHSCREEN_STYLUS:
2715                res.append("stylus");
2716                break;
2717            default:
2718                res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2719                break;
2720        }
2721    }
2722    if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2723        if (res.size() > 0) res.append("-");
2724        switch (inputFlags&MASK_KEYSHIDDEN) {
2725            case ResTable_config::KEYSHIDDEN_NO:
2726                res.append("keysexposed");
2727                break;
2728            case ResTable_config::KEYSHIDDEN_YES:
2729                res.append("keyshidden");
2730                break;
2731            case ResTable_config::KEYSHIDDEN_SOFT:
2732                res.append("keyssoft");
2733                break;
2734        }
2735    }
2736    if (keyboard != KEYBOARD_ANY) {
2737        if (res.size() > 0) res.append("-");
2738        switch (keyboard) {
2739            case ResTable_config::KEYBOARD_NOKEYS:
2740                res.append("nokeys");
2741                break;
2742            case ResTable_config::KEYBOARD_QWERTY:
2743                res.append("qwerty");
2744                break;
2745            case ResTable_config::KEYBOARD_12KEY:
2746                res.append("12key");
2747                break;
2748            default:
2749                res.appendFormat("keyboard=%d", dtohs(keyboard));
2750                break;
2751        }
2752    }
2753    if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2754        if (res.size() > 0) res.append("-");
2755        switch (inputFlags&MASK_NAVHIDDEN) {
2756            case ResTable_config::NAVHIDDEN_NO:
2757                res.append("navexposed");
2758                break;
2759            case ResTable_config::NAVHIDDEN_YES:
2760                res.append("navhidden");
2761                break;
2762            default:
2763                res.appendFormat("inputFlagsNavHidden=%d",
2764                        dtohs(inputFlags&MASK_NAVHIDDEN));
2765                break;
2766        }
2767    }
2768    if (navigation != NAVIGATION_ANY) {
2769        if (res.size() > 0) res.append("-");
2770        switch (navigation) {
2771            case ResTable_config::NAVIGATION_NONAV:
2772                res.append("nonav");
2773                break;
2774            case ResTable_config::NAVIGATION_DPAD:
2775                res.append("dpad");
2776                break;
2777            case ResTable_config::NAVIGATION_TRACKBALL:
2778                res.append("trackball");
2779                break;
2780            case ResTable_config::NAVIGATION_WHEEL:
2781                res.append("wheel");
2782                break;
2783            default:
2784                res.appendFormat("navigation=%d", dtohs(navigation));
2785                break;
2786        }
2787    }
2788    if (screenSize != 0) {
2789        if (res.size() > 0) res.append("-");
2790        res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2791    }
2792    if (version != 0) {
2793        if (res.size() > 0) res.append("-");
2794        res.appendFormat("v%d", dtohs(sdkVersion));
2795        if (minorVersion != 0) {
2796            res.appendFormat(".%d", dtohs(minorVersion));
2797        }
2798    }
2799
2800    return res;
2801}
2802
2803// --------------------------------------------------------------------
2804// --------------------------------------------------------------------
2805// --------------------------------------------------------------------
2806
2807struct ResTable::Header
2808{
2809    Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
2810        resourceIDMap(NULL), resourceIDMapSize(0) { }
2811
2812    ~Header()
2813    {
2814        free(resourceIDMap);
2815    }
2816
2817    const ResTable* const           owner;
2818    void*                           ownedData;
2819    const ResTable_header*          header;
2820    size_t                          size;
2821    const uint8_t*                  dataEnd;
2822    size_t                          index;
2823    int32_t                         cookie;
2824
2825    ResStringPool                   values;
2826    uint32_t*                       resourceIDMap;
2827    size_t                          resourceIDMapSize;
2828};
2829
2830struct ResTable::Entry {
2831    ResTable_config config;
2832    const ResTable_entry* entry;
2833    const ResTable_type* type;
2834    uint32_t specFlags;
2835    const Package* package;
2836
2837    StringPoolRef typeStr;
2838    StringPoolRef keyStr;
2839};
2840
2841struct ResTable::Type
2842{
2843    Type(const Header* _header, const Package* _package, size_t count)
2844        : header(_header), package(_package), entryCount(count),
2845          typeSpec(NULL), typeSpecFlags(NULL) { }
2846    const Header* const             header;
2847    const Package* const            package;
2848    const size_t                    entryCount;
2849    const ResTable_typeSpec*        typeSpec;
2850    const uint32_t*                 typeSpecFlags;
2851    IdmapEntries                    idmapEntries;
2852    Vector<const ResTable_type*>    configs;
2853};
2854
2855struct ResTable::Package
2856{
2857    Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
2858        : owner(_owner), header(_header), typeIdOffset(0) {
2859        if (_package != NULL && dtohs(_package->header.headerSize) == sizeof(_package)) {
2860            // The package structure is the same size as the definition.
2861            // This means it contains the typeIdOffset field.
2862            typeIdOffset = _package->typeIdOffset;
2863        }
2864    }
2865
2866    const ResTable* const           owner;
2867    const Header* const             header;
2868
2869    ResStringPool                   typeStrings;
2870    ResStringPool                   keyStrings;
2871
2872    size_t                          typeIdOffset;
2873};
2874
2875// A group of objects describing a particular resource package.
2876// The first in 'package' is always the root object (from the resource
2877// table that defined the package); the ones after are skins on top of it.
2878struct ResTable::PackageGroup
2879{
2880    PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
2881        : owner(_owner)
2882        , name(_name)
2883        , id(_id)
2884        , largestTypeId(0)
2885        , bags(NULL)
2886        , dynamicRefTable(static_cast<uint8_t>(_id))
2887    { }
2888
2889    ~PackageGroup() {
2890        clearBagCache();
2891        const size_t numTypes = types.size();
2892        for (size_t i = 0; i < numTypes; i++) {
2893            const TypeList& typeList = types[i];
2894            const size_t numInnerTypes = typeList.size();
2895            for (size_t j = 0; j < numInnerTypes; j++) {
2896                if (typeList[j]->package->owner == owner) {
2897                    delete typeList[j];
2898                }
2899            }
2900        }
2901
2902        const size_t N = packages.size();
2903        for (size_t i=0; i<N; i++) {
2904            Package* pkg = packages[i];
2905            if (pkg->owner == owner) {
2906                delete pkg;
2907            }
2908        }
2909    }
2910
2911    void clearBagCache() {
2912        if (bags) {
2913            TABLE_NOISY(printf("bags=%p\n", bags));
2914            for (size_t i = 0; i < bags->size(); i++) {
2915                TABLE_NOISY(printf("type=%d\n", i));
2916                const TypeList& typeList = types[i];
2917                if (typeList.isEmpty()) {
2918                    bag_set** typeBags = bags->get(i);
2919                    TABLE_NOISY(printf("typeBags=%p\n", typeBags));
2920                    if (typeBags) {
2921                        const size_t N = typeList[0]->entryCount;
2922                        TABLE_NOISY(printf("type->entryCount=%x\n", N));
2923                        for (size_t j=0; j<N; j++) {
2924                            if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
2925                                free(typeBags[j]);
2926                        }
2927                        free(typeBags);
2928                    }
2929                }
2930            }
2931            delete bags;
2932            bags = NULL;
2933        }
2934    }
2935
2936    ssize_t findType16(const char16_t* type, size_t len) const {
2937        const size_t N = packages.size();
2938        for (size_t i = 0; i < N; i++) {
2939            ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
2940            if (index >= 0) {
2941                return index + packages[i]->typeIdOffset;
2942            }
2943        }
2944        return -1;
2945    }
2946
2947    const ResTable* const           owner;
2948    String16 const                  name;
2949    uint32_t const                  id;
2950
2951    // This is mainly used to keep track of the loaded packages
2952    // and to clean them up properly. Accessing resources happens from
2953    // the 'types' array.
2954    Vector<Package*>                packages;
2955
2956    ByteBucketArray<TypeList>       types;
2957
2958    uint8_t                         largestTypeId;
2959
2960    // Computed attribute bags, first indexed by the type and second
2961    // by the entry in that type.
2962    ByteBucketArray<bag_set**>*     bags;
2963
2964    // The table mapping dynamic references to resolved references for
2965    // this package group.
2966    // TODO: We may be able to support dynamic references in overlays
2967    // by having these tables in a per-package scope rather than
2968    // per-package-group.
2969    DynamicRefTable                 dynamicRefTable;
2970};
2971
2972struct ResTable::bag_set
2973{
2974    size_t numAttrs;    // number in array
2975    size_t availAttrs;  // total space in array
2976    uint32_t typeSpecFlags;
2977    // Followed by 'numAttr' bag_entry structures.
2978};
2979
2980ResTable::Theme::Theme(const ResTable& table)
2981    : mTable(table)
2982{
2983    memset(mPackages, 0, sizeof(mPackages));
2984}
2985
2986ResTable::Theme::~Theme()
2987{
2988    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
2989        package_info* pi = mPackages[i];
2990        if (pi != NULL) {
2991            free_package(pi);
2992        }
2993    }
2994}
2995
2996void ResTable::Theme::free_package(package_info* pi)
2997{
2998    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
2999        theme_entry* te = pi->types[j].entries;
3000        if (te != NULL) {
3001            free(te);
3002        }
3003    }
3004    free(pi);
3005}
3006
3007ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3008{
3009    package_info* newpi = (package_info*)malloc(sizeof(package_info));
3010    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3011        size_t cnt = pi->types[j].numEntries;
3012        newpi->types[j].numEntries = cnt;
3013        theme_entry* te = pi->types[j].entries;
3014        if (te != NULL) {
3015            theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3016            newpi->types[j].entries = newte;
3017            memcpy(newte, te, cnt*sizeof(theme_entry));
3018        } else {
3019            newpi->types[j].entries = NULL;
3020        }
3021    }
3022    return newpi;
3023}
3024
3025status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3026{
3027    const bag_entry* bag;
3028    uint32_t bagTypeSpecFlags = 0;
3029    mTable.lock();
3030    const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3031    TABLE_NOISY(ALOGV("Applying style 0x%08x to theme %p, count=%d", resID, this, N));
3032    if (N < 0) {
3033        mTable.unlock();
3034        return N;
3035    }
3036
3037    uint32_t curPackage = 0xffffffff;
3038    ssize_t curPackageIndex = 0;
3039    package_info* curPI = NULL;
3040    uint32_t curType = 0xffffffff;
3041    size_t numEntries = 0;
3042    theme_entry* curEntries = NULL;
3043
3044    const bag_entry* end = bag + N;
3045    while (bag < end) {
3046        const uint32_t attrRes = bag->map.name.ident;
3047        const uint32_t p = Res_GETPACKAGE(attrRes);
3048        const uint32_t t = Res_GETTYPE(attrRes);
3049        const uint32_t e = Res_GETENTRY(attrRes);
3050
3051        if (curPackage != p) {
3052            const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3053            if (pidx < 0) {
3054                ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3055                bag++;
3056                continue;
3057            }
3058            curPackage = p;
3059            curPackageIndex = pidx;
3060            curPI = mPackages[pidx];
3061            if (curPI == NULL) {
3062                PackageGroup* const grp = mTable.mPackageGroups[pidx];
3063                curPI = (package_info*)malloc(sizeof(package_info));
3064                memset(curPI, 0, sizeof(*curPI));
3065                mPackages[pidx] = curPI;
3066            }
3067            curType = 0xffffffff;
3068        }
3069        if (curType != t) {
3070            if (t > Res_MAXTYPE) {
3071                ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3072                bag++;
3073                continue;
3074            }
3075            curType = t;
3076            curEntries = curPI->types[t].entries;
3077            if (curEntries == NULL) {
3078                PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3079                const TypeList& typeList = grp->types[t];
3080                int cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3081                curEntries = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3082                memset(curEntries, Res_value::TYPE_NULL, cnt*sizeof(theme_entry));
3083                curPI->types[t].numEntries = cnt;
3084                curPI->types[t].entries = curEntries;
3085            }
3086            numEntries = curPI->types[t].numEntries;
3087        }
3088        if (e >= numEntries) {
3089            ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3090            bag++;
3091            continue;
3092        }
3093        theme_entry* curEntry = curEntries + e;
3094        TABLE_NOISY(ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3095                attrRes, bag->map.value.dataType, bag->map.value.data,
3096                curEntry->value.dataType));
3097        if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
3098            curEntry->stringBlock = bag->stringBlock;
3099            curEntry->typeSpecFlags |= bagTypeSpecFlags;
3100            curEntry->value = bag->map.value;
3101        }
3102
3103        bag++;
3104    }
3105
3106    mTable.unlock();
3107
3108    //ALOGI("Applying style 0x%08x (force=%d)  theme %p...\n", resID, force, this);
3109    //dumpToLog();
3110
3111    return NO_ERROR;
3112}
3113
3114status_t ResTable::Theme::setTo(const Theme& other)
3115{
3116    //ALOGI("Setting theme %p from theme %p...\n", this, &other);
3117    //dumpToLog();
3118    //other.dumpToLog();
3119
3120    if (&mTable == &other.mTable) {
3121        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3122            if (mPackages[i] != NULL) {
3123                free_package(mPackages[i]);
3124            }
3125            if (other.mPackages[i] != NULL) {
3126                mPackages[i] = copy_package(other.mPackages[i]);
3127            } else {
3128                mPackages[i] = NULL;
3129            }
3130        }
3131    } else {
3132        // @todo: need to really implement this, not just copy
3133        // the system package (which is still wrong because it isn't
3134        // fixing up resource references).
3135        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3136            if (mPackages[i] != NULL) {
3137                free_package(mPackages[i]);
3138            }
3139            if (i == 0 && other.mPackages[i] != NULL) {
3140                mPackages[i] = copy_package(other.mPackages[i]);
3141            } else {
3142                mPackages[i] = NULL;
3143            }
3144        }
3145    }
3146
3147    //ALOGI("Final theme:");
3148    //dumpToLog();
3149
3150    return NO_ERROR;
3151}
3152
3153ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3154        uint32_t* outTypeSpecFlags) const
3155{
3156    int cnt = 20;
3157
3158    if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3159
3160    do {
3161        const ssize_t p = mTable.getResourcePackageIndex(resID);
3162        const uint32_t t = Res_GETTYPE(resID);
3163        const uint32_t e = Res_GETENTRY(resID);
3164
3165        TABLE_THEME(ALOGI("Looking up attr 0x%08x in theme %p", resID, this));
3166
3167        if (p >= 0) {
3168            const package_info* const pi = mPackages[p];
3169            TABLE_THEME(ALOGI("Found package: %p", pi));
3170            if (pi != NULL) {
3171                TABLE_THEME(ALOGI("Desired type index is %ld in avail %d", t, Res_MAXTYPE + 1));
3172                if (t <= Res_MAXTYPE) {
3173                    const type_info& ti = pi->types[t];
3174                    TABLE_THEME(ALOGI("Desired entry index is %ld in avail %d", e, ti.numEntries));
3175                    if (e < ti.numEntries) {
3176                        const theme_entry& te = ti.entries[e];
3177                        if (outTypeSpecFlags != NULL) {
3178                            *outTypeSpecFlags |= te.typeSpecFlags;
3179                        }
3180                        TABLE_THEME(ALOGI("Theme value: type=0x%x, data=0x%08x",
3181                                te.value.dataType, te.value.data));
3182                        const uint8_t type = te.value.dataType;
3183                        if (type == Res_value::TYPE_ATTRIBUTE) {
3184                            if (cnt > 0) {
3185                                cnt--;
3186                                resID = te.value.data;
3187                                continue;
3188                            }
3189                            ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3190                            return BAD_INDEX;
3191                        } else if (type != Res_value::TYPE_NULL) {
3192                            *outValue = te.value;
3193                            return te.stringBlock;
3194                        }
3195                        return BAD_INDEX;
3196                    }
3197                }
3198            }
3199        }
3200        break;
3201
3202    } while (true);
3203
3204    return BAD_INDEX;
3205}
3206
3207ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3208        ssize_t blockIndex, uint32_t* outLastRef,
3209        uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3210{
3211    //printf("Resolving type=0x%x\n", inOutValue->dataType);
3212    if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3213        uint32_t newTypeSpecFlags;
3214        blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3215        TABLE_THEME(ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=%p\n",
3216             (int)blockIndex, (int)inOutValue->dataType, (void*)inOutValue->data));
3217        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3218        //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3219        if (blockIndex < 0) {
3220            return blockIndex;
3221        }
3222    }
3223    return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3224            inoutTypeSpecFlags, inoutConfig);
3225}
3226
3227void ResTable::Theme::dumpToLog() const
3228{
3229    ALOGI("Theme %p:\n", this);
3230    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3231        package_info* pi = mPackages[i];
3232        if (pi == NULL) continue;
3233
3234        ALOGI("  Package #0x%02x:\n", (int)(i + 1));
3235        for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3236            type_info& ti = pi->types[j];
3237            if (ti.numEntries == 0) continue;
3238            ALOGI("    Type #0x%02x:\n", (int)(j + 1));
3239            for (size_t k = 0; k < ti.numEntries; k++) {
3240                const theme_entry& te = ti.entries[k];
3241                if (te.value.dataType == Res_value::TYPE_NULL) continue;
3242                ALOGI("      0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3243                     (int)Res_MAKEID(i, j, k),
3244                     te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3245            }
3246        }
3247    }
3248}
3249
3250ResTable::ResTable()
3251    : mError(NO_INIT), mNextPackageId(2)
3252{
3253    memset(&mParams, 0, sizeof(mParams));
3254    memset(mPackageMap, 0, sizeof(mPackageMap));
3255    //ALOGI("Creating ResTable %p\n", this);
3256}
3257
3258ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3259    : mError(NO_INIT), mNextPackageId(2)
3260{
3261    memset(&mParams, 0, sizeof(mParams));
3262    memset(mPackageMap, 0, sizeof(mPackageMap));
3263    addInternal(data, size, NULL, 0, cookie, copyData);
3264    LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3265    //ALOGI("Creating ResTable %p\n", this);
3266}
3267
3268ResTable::~ResTable()
3269{
3270    //ALOGI("Destroying ResTable in %p\n", this);
3271    uninit();
3272}
3273
3274inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3275{
3276    return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3277}
3278
3279status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3280    return addInternal(data, size, NULL, 0, cookie, copyData);
3281}
3282
3283status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3284        const int32_t cookie, bool copyData) {
3285    return addInternal(data, size, idmapData, idmapDataSize, cookie, copyData);
3286}
3287
3288status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
3289    const void* data = asset->getBuffer(true);
3290    if (data == NULL) {
3291        ALOGW("Unable to get buffer of resource asset file");
3292        return UNKNOWN_ERROR;
3293    }
3294
3295    return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, 0, cookie, copyData);
3296}
3297
3298status_t ResTable::add(Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData) {
3299    const void* data = asset->getBuffer(true);
3300    if (data == NULL) {
3301        ALOGW("Unable to get buffer of resource asset file");
3302        return UNKNOWN_ERROR;
3303    }
3304
3305    size_t idmapSize = 0;
3306    const void* idmapData = NULL;
3307    if (idmapAsset != NULL) {
3308        idmapData = idmapAsset->getBuffer(true);
3309        if (idmapData == NULL) {
3310            ALOGW("Unable to get buffer of idmap asset file");
3311            return UNKNOWN_ERROR;
3312        }
3313        idmapSize = static_cast<size_t>(idmapAsset->getLength());
3314    }
3315
3316    return addInternal(data, static_cast<size_t>(asset->getLength()),
3317            idmapData, idmapSize, cookie, copyData);
3318}
3319
3320status_t ResTable::add(ResTable* src)
3321{
3322    mError = src->mError;
3323
3324    for (size_t i=0; i<src->mHeaders.size(); i++) {
3325        mHeaders.add(src->mHeaders[i]);
3326    }
3327
3328    for (size_t i=0; i<src->mPackageGroups.size(); i++) {
3329        PackageGroup* srcPg = src->mPackageGroups[i];
3330        PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
3331        for (size_t j=0; j<srcPg->packages.size(); j++) {
3332            pg->packages.add(srcPg->packages[j]);
3333        }
3334
3335        for (size_t j = 0; j < srcPg->types.size(); j++) {
3336            if (srcPg->types[j].isEmpty()) {
3337                continue;
3338            }
3339
3340            TypeList& typeList = pg->types.editItemAt(j);
3341            typeList.appendVector(srcPg->types[j]);
3342        }
3343        pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
3344        mPackageGroups.add(pg);
3345    }
3346
3347    memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
3348
3349    return mError;
3350}
3351
3352status_t ResTable::addEmpty(const int32_t cookie) {
3353    Header* header = new Header(this);
3354    header->index = mHeaders.size();
3355    header->cookie = cookie;
3356    header->values.setToEmpty();
3357    header->ownedData = calloc(1, sizeof(ResTable_header));
3358
3359    ResTable_header* resHeader = (ResTable_header*) header->ownedData;
3360    resHeader->header.type = RES_TABLE_TYPE;
3361    resHeader->header.headerSize = sizeof(ResTable_header);
3362    resHeader->header.size = sizeof(ResTable_header);
3363
3364    header->header = (const ResTable_header*) resHeader;
3365    mHeaders.add(header);
3366
3367    PackageGroup* pg = new PackageGroup(this, String16(), 0);
3368    pg->packages.add(new Package(this, header, NULL));
3369    mPackageGroups.add(pg);
3370    return (mError=NO_ERROR);
3371}
3372
3373status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
3374        const int32_t cookie, bool copyData)
3375{
3376    if (!data) {
3377        return NO_ERROR;
3378    }
3379
3380    if (dataSize < sizeof(ResTable_header)) {
3381        ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
3382                (int) dataSize, (int) sizeof(ResTable_header));
3383        return UNKNOWN_ERROR;
3384    }
3385
3386    Header* header = new Header(this);
3387    header->index = mHeaders.size();
3388    header->cookie = cookie;
3389    if (idmapData != NULL) {
3390        header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
3391        if (header->resourceIDMap == NULL) {
3392            delete header;
3393            return (mError = NO_MEMORY);
3394        }
3395        memcpy(header->resourceIDMap, idmapData, idmapDataSize);
3396        header->resourceIDMapSize = idmapDataSize;
3397    }
3398    mHeaders.add(header);
3399
3400    const bool notDeviceEndian = htods(0xf0) != 0xf0;
3401
3402    LOAD_TABLE_NOISY(
3403        ALOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%d, copy=%d "
3404             "idmap=%p\n", data, dataSize, cookie, copyData, idmap));
3405
3406    if (copyData || notDeviceEndian) {
3407        header->ownedData = malloc(dataSize);
3408        if (header->ownedData == NULL) {
3409            return (mError=NO_MEMORY);
3410        }
3411        memcpy(header->ownedData, data, dataSize);
3412        data = header->ownedData;
3413    }
3414
3415    header->header = (const ResTable_header*)data;
3416    header->size = dtohl(header->header->header.size);
3417    //ALOGI("Got size 0x%x, again size 0x%x, raw size 0x%x\n", header->size,
3418    //     dtohl(header->header->header.size), header->header->header.size);
3419    LOAD_TABLE_NOISY(ALOGV("Loading ResTable @%p:\n", header->header));
3420    if (dtohs(header->header->header.headerSize) > header->size
3421            || header->size > dataSize) {
3422        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
3423             (int)dtohs(header->header->header.headerSize),
3424             (int)header->size, (int)dataSize);
3425        return (mError=BAD_TYPE);
3426    }
3427    if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
3428        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
3429             (int)dtohs(header->header->header.headerSize),
3430             (int)header->size);
3431        return (mError=BAD_TYPE);
3432    }
3433    header->dataEnd = ((const uint8_t*)header->header) + header->size;
3434
3435    // Iterate through all chunks.
3436    size_t curPackage = 0;
3437
3438    const ResChunk_header* chunk =
3439        (const ResChunk_header*)(((const uint8_t*)header->header)
3440                                 + dtohs(header->header->header.headerSize));
3441    while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
3442           ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
3443        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
3444        if (err != NO_ERROR) {
3445            return (mError=err);
3446        }
3447        TABLE_NOISY(ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
3448                     dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
3449                     (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
3450        const size_t csize = dtohl(chunk->size);
3451        const uint16_t ctype = dtohs(chunk->type);
3452        if (ctype == RES_STRING_POOL_TYPE) {
3453            if (header->values.getError() != NO_ERROR) {
3454                // Only use the first string chunk; ignore any others that
3455                // may appear.
3456                status_t err = header->values.setTo(chunk, csize);
3457                if (err != NO_ERROR) {
3458                    return (mError=err);
3459                }
3460            } else {
3461                ALOGW("Multiple string chunks found in resource table.");
3462            }
3463        } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
3464            if (curPackage >= dtohl(header->header->packageCount)) {
3465                ALOGW("More package chunks were found than the %d declared in the header.",
3466                     dtohl(header->header->packageCount));
3467                return (mError=BAD_TYPE);
3468            }
3469
3470            if (parsePackage((ResTable_package*)chunk, header) != NO_ERROR) {
3471                return mError;
3472            }
3473            curPackage++;
3474        } else {
3475            ALOGW("Unknown chunk type 0x%x in table at %p.\n",
3476                 ctype,
3477                 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3478        }
3479        chunk = (const ResChunk_header*)
3480            (((const uint8_t*)chunk) + csize);
3481    }
3482
3483    if (curPackage < dtohl(header->header->packageCount)) {
3484        ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
3485             (int)curPackage, dtohl(header->header->packageCount));
3486        return (mError=BAD_TYPE);
3487    }
3488    mError = header->values.getError();
3489    if (mError != NO_ERROR) {
3490        ALOGW("No string values found in resource table!");
3491    }
3492
3493    TABLE_NOISY(ALOGV("Returning from add with mError=%d\n", mError));
3494    return mError;
3495}
3496
3497status_t ResTable::getError() const
3498{
3499    return mError;
3500}
3501
3502void ResTable::uninit()
3503{
3504    mError = NO_INIT;
3505    size_t N = mPackageGroups.size();
3506    for (size_t i=0; i<N; i++) {
3507        PackageGroup* g = mPackageGroups[i];
3508        delete g;
3509    }
3510    N = mHeaders.size();
3511    for (size_t i=0; i<N; i++) {
3512        Header* header = mHeaders[i];
3513        if (header->owner == this) {
3514            if (header->ownedData) {
3515                free(header->ownedData);
3516            }
3517            delete header;
3518        }
3519    }
3520
3521    mPackageGroups.clear();
3522    mHeaders.clear();
3523}
3524
3525bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
3526{
3527    if (mError != NO_ERROR) {
3528        return false;
3529    }
3530
3531    const ssize_t p = getResourcePackageIndex(resID);
3532    const int t = Res_GETTYPE(resID);
3533    const int e = Res_GETENTRY(resID);
3534
3535    if (p < 0) {
3536        if (Res_GETPACKAGE(resID)+1 == 0) {
3537            ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
3538        } else {
3539            ALOGW("No known package when getting name for resource number 0x%08x", resID);
3540        }
3541        return false;
3542    }
3543    if (t < 0) {
3544        ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
3545        return false;
3546    }
3547
3548    const PackageGroup* const grp = mPackageGroups[p];
3549    if (grp == NULL) {
3550        ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
3551        return false;
3552    }
3553
3554    Entry entry;
3555    status_t err = getEntry(grp, t, e, NULL, &entry);
3556    if (err != NO_ERROR) {
3557        return false;
3558    }
3559
3560    outName->package = grp->name.string();
3561    outName->packageLen = grp->name.size();
3562    if (allowUtf8) {
3563        outName->type8 = entry.typeStr.string8(&outName->typeLen);
3564        outName->name8 = entry.keyStr.string8(&outName->nameLen);
3565    } else {
3566        outName->type8 = NULL;
3567        outName->name8 = NULL;
3568    }
3569    if (outName->type8 == NULL) {
3570        outName->type = entry.typeStr.string16(&outName->typeLen);
3571        // If we have a bad index for some reason, we should abort.
3572        if (outName->type == NULL) {
3573            return false;
3574        }
3575    }
3576    if (outName->name8 == NULL) {
3577        outName->name = entry.keyStr.string16(&outName->nameLen);
3578        // If we have a bad index for some reason, we should abort.
3579        if (outName->name == NULL) {
3580            return false;
3581        }
3582    }
3583
3584    return true;
3585}
3586
3587ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
3588        uint32_t* outSpecFlags, ResTable_config* outConfig) const
3589{
3590    if (mError != NO_ERROR) {
3591        return mError;
3592    }
3593
3594    const ssize_t p = getResourcePackageIndex(resID);
3595    const int t = Res_GETTYPE(resID);
3596    const int e = Res_GETENTRY(resID);
3597
3598    if (p < 0) {
3599        if (Res_GETPACKAGE(resID)+1 == 0) {
3600            ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
3601        } else {
3602            ALOGW("No known package when getting value for resource number 0x%08x", resID);
3603        }
3604        return BAD_INDEX;
3605    }
3606    if (t < 0) {
3607        ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
3608        return BAD_INDEX;
3609    }
3610
3611    const PackageGroup* const grp = mPackageGroups[p];
3612    if (grp == NULL) {
3613        ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
3614        return BAD_INDEX;
3615    }
3616
3617    // Allow overriding density
3618    ResTable_config desiredConfig = mParams;
3619    if (density > 0) {
3620        desiredConfig.density = density;
3621    }
3622
3623    Entry entry;
3624    status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
3625    if (err != NO_ERROR) {
3626        ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
3627                resID, t, e, err);
3628        return err;
3629    }
3630
3631    if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
3632        if (!mayBeBag) {
3633            ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
3634        }
3635        return BAD_VALUE;
3636    }
3637
3638    const Res_value* value = reinterpret_cast<const Res_value*>(
3639            reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
3640
3641    outValue->size = dtohs(value->size);
3642    outValue->res0 = value->res0;
3643    outValue->dataType = value->dataType;
3644    outValue->data = dtohl(value->data);
3645
3646    // The reference may be pointing to a resource in a shared library. These
3647    // references have build-time generated package IDs. These ids may not match
3648    // the actual package IDs of the corresponding packages in this ResTable.
3649    // We need to fix the package ID based on a mapping.
3650    if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
3651        ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
3652        return BAD_VALUE;
3653    }
3654
3655    TABLE_NOISY(size_t len;
3656          printf("Found value: pkg=%d, type=%d, str=%s, int=%d\n",
3657                 entry.package->header->index,
3658                 outValue->dataType,
3659                 outValue->dataType == Res_value::TYPE_STRING
3660                 ? String8(entry.package->header->values.stringAt(
3661                     outValue->data, &len)).string()
3662                 : "",
3663                 outValue->data));
3664
3665    if (outSpecFlags != NULL) {
3666        *outSpecFlags = entry.specFlags;
3667    }
3668
3669    if (outConfig != NULL) {
3670        *outConfig = entry.config;
3671    }
3672
3673    return entry.package->header->index;
3674}
3675
3676ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3677        uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3678        ResTable_config* outConfig) const
3679{
3680    int count=0;
3681    while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
3682            && value->data != 0 && count < 20) {
3683        if (outLastRef) *outLastRef = value->data;
3684        uint32_t lastRef = value->data;
3685        uint32_t newFlags = 0;
3686        const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3687                outConfig);
3688        if (newIndex == BAD_INDEX) {
3689            return BAD_INDEX;
3690        }
3691        TABLE_THEME(ALOGI("Resolving reference %p: newIndex=%d, type=0x%x, data=%p\n",
3692             (void*)lastRef, (int)newIndex, (int)value->dataType, (void*)value->data));
3693        //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3694        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3695        if (newIndex < 0) {
3696            // This can fail if the resource being referenced is a style...
3697            // in this case, just return the reference, and expect the
3698            // caller to deal with.
3699            return blockIndex;
3700        }
3701        blockIndex = newIndex;
3702        count++;
3703    }
3704    return blockIndex;
3705}
3706
3707const char16_t* ResTable::valueToString(
3708    const Res_value* value, size_t stringBlock,
3709    char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen)
3710{
3711    if (!value) {
3712        return NULL;
3713    }
3714    if (value->dataType == value->TYPE_STRING) {
3715        return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
3716    }
3717    // XXX do int to string conversions.
3718    return NULL;
3719}
3720
3721ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
3722{
3723    mLock.lock();
3724    ssize_t err = getBagLocked(resID, outBag);
3725    if (err < NO_ERROR) {
3726        //printf("*** get failed!  unlocking\n");
3727        mLock.unlock();
3728    }
3729    return err;
3730}
3731
3732void ResTable::unlockBag(const bag_entry* /*bag*/) const
3733{
3734    //printf("<<< unlockBag %p\n", this);
3735    mLock.unlock();
3736}
3737
3738void ResTable::lock() const
3739{
3740    mLock.lock();
3741}
3742
3743void ResTable::unlock() const
3744{
3745    mLock.unlock();
3746}
3747
3748ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
3749        uint32_t* outTypeSpecFlags) const
3750{
3751    if (mError != NO_ERROR) {
3752        return mError;
3753    }
3754
3755    const ssize_t p = getResourcePackageIndex(resID);
3756    const int t = Res_GETTYPE(resID);
3757    const int e = Res_GETENTRY(resID);
3758
3759    if (p < 0) {
3760        ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
3761        return BAD_INDEX;
3762    }
3763    if (t < 0) {
3764        ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
3765        return BAD_INDEX;
3766    }
3767
3768    //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
3769    PackageGroup* const grp = mPackageGroups[p];
3770    if (grp == NULL) {
3771        ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
3772        return BAD_INDEX;
3773    }
3774
3775    const TypeList& typeConfigs = grp->types[t];
3776    if (typeConfigs.isEmpty()) {
3777        ALOGW("Type identifier 0x%x does not exist.", t+1);
3778        return BAD_INDEX;
3779    }
3780
3781    const size_t NENTRY = typeConfigs[0]->entryCount;
3782    if (e >= (int)NENTRY) {
3783        ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
3784             e, (int)typeConfigs[0]->entryCount);
3785        return BAD_INDEX;
3786    }
3787
3788    // First see if we've already computed this bag...
3789    if (grp->bags) {
3790        bag_set** typeSet = grp->bags->get(t);
3791        if (typeSet) {
3792            bag_set* set = typeSet[e];
3793            if (set) {
3794                if (set != (bag_set*)0xFFFFFFFF) {
3795                    if (outTypeSpecFlags != NULL) {
3796                        *outTypeSpecFlags = set->typeSpecFlags;
3797                    }
3798                    *outBag = (bag_entry*)(set+1);
3799                    //ALOGI("Found existing bag for: %p\n", (void*)resID);
3800                    return set->numAttrs;
3801                }
3802                ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
3803                     resID);
3804                return BAD_INDEX;
3805            }
3806        }
3807    }
3808
3809    // Bag not found, we need to compute it!
3810    if (!grp->bags) {
3811        grp->bags = new ByteBucketArray<bag_set**>();
3812        if (!grp->bags) return NO_MEMORY;
3813    }
3814
3815    bag_set** typeSet = grp->bags->get(t);
3816    if (!typeSet) {
3817        typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
3818        if (!typeSet) return NO_MEMORY;
3819        grp->bags->set(t, typeSet);
3820    }
3821
3822    // Mark that we are currently working on this one.
3823    typeSet[e] = (bag_set*)0xFFFFFFFF;
3824
3825    TABLE_NOISY(ALOGI("Building bag: %p\n", (void*)resID));
3826
3827    // Now collect all bag attributes
3828    Entry entry;
3829    status_t err = getEntry(grp, t, e, &mParams, &entry);
3830    if (err != NO_ERROR) {
3831        return err;
3832    }
3833
3834    const uint16_t entrySize = dtohs(entry.entry->size);
3835    const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
3836        ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
3837    const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
3838        ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
3839
3840    size_t N = count;
3841
3842    TABLE_NOISY(ALOGI("Found map: size=%p parent=%p count=%d\n",
3843                     entrySize, parent, count));
3844
3845    // If this map inherits from another, we need to start
3846    // with its parent's values.  Otherwise start out empty.
3847    TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
3848                       entrySize, parent));
3849
3850    // This is what we are building.
3851    bag_set* set = NULL;
3852
3853    if (parent) {
3854        uint32_t resolvedParent = parent;
3855
3856        // Bags encode a parent reference without using the standard
3857        // Res_value structure. That means we must always try to
3858        // resolve a parent reference in case it is actually a
3859        // TYPE_DYNAMIC_REFERENCE.
3860        status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
3861        if (err != NO_ERROR) {
3862            ALOGE("Failed resolving bag parent id 0x%08x", parent);
3863            return UNKNOWN_ERROR;
3864        }
3865
3866        const bag_entry* parentBag;
3867        uint32_t parentTypeSpecFlags = 0;
3868        const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
3869        const size_t NT = ((NP >= 0) ? NP : 0) + N;
3870        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
3871        if (set == NULL) {
3872            return NO_MEMORY;
3873        }
3874        if (NP > 0) {
3875            memcpy(set+1, parentBag, NP*sizeof(bag_entry));
3876            set->numAttrs = NP;
3877            TABLE_NOISY(ALOGI("Initialized new bag with %d inherited attributes.\n", NP));
3878        } else {
3879            TABLE_NOISY(ALOGI("Initialized new bag with no inherited attributes.\n"));
3880            set->numAttrs = 0;
3881        }
3882        set->availAttrs = NT;
3883        set->typeSpecFlags = parentTypeSpecFlags;
3884    } else {
3885        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
3886        if (set == NULL) {
3887            return NO_MEMORY;
3888        }
3889        set->numAttrs = 0;
3890        set->availAttrs = N;
3891        set->typeSpecFlags = 0;
3892    }
3893
3894    set->typeSpecFlags |= entry.specFlags;
3895
3896    // Now merge in the new attributes...
3897    size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
3898        + dtohs(entry.entry->size);
3899    const ResTable_map* map;
3900    bag_entry* entries = (bag_entry*)(set+1);
3901    size_t curEntry = 0;
3902    uint32_t pos = 0;
3903    TABLE_NOISY(ALOGI("Starting with set %p, entries=%p, avail=%d\n",
3904                 set, entries, set->availAttrs));
3905    while (pos < count) {
3906        TABLE_NOISY(printf("Now at %p\n", (void*)curOff));
3907
3908        if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
3909            ALOGW("ResTable_map at %d is beyond type chunk data %d",
3910                 (int)curOff, dtohl(entry.type->header.size));
3911            return BAD_TYPE;
3912        }
3913        map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
3914        N++;
3915
3916        uint32_t newName = htodl(map->name.ident);
3917        if (!Res_INTERNALID(newName)) {
3918            // Attributes don't have a resource id as the name. They specify
3919            // other data, which would be wrong to change via a lookup.
3920            if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
3921                ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
3922                        (int) curOff, (int) newName);
3923                return UNKNOWN_ERROR;
3924            }
3925        }
3926
3927        bool isInside;
3928        uint32_t oldName = 0;
3929        while ((isInside=(curEntry < set->numAttrs))
3930                && (oldName=entries[curEntry].map.name.ident) < newName) {
3931            TABLE_NOISY(printf("#%d: Keeping existing attribute: 0x%08x\n",
3932                         curEntry, entries[curEntry].map.name.ident));
3933            curEntry++;
3934        }
3935
3936        if ((!isInside) || oldName != newName) {
3937            // This is a new attribute...  figure out what to do with it.
3938            if (set->numAttrs >= set->availAttrs) {
3939                // Need to alloc more memory...
3940                const size_t newAvail = set->availAttrs+N;
3941                set = (bag_set*)realloc(set,
3942                                        sizeof(bag_set)
3943                                        + sizeof(bag_entry)*newAvail);
3944                if (set == NULL) {
3945                    return NO_MEMORY;
3946                }
3947                set->availAttrs = newAvail;
3948                entries = (bag_entry*)(set+1);
3949                TABLE_NOISY(printf("Reallocated set %p, entries=%p, avail=%d\n",
3950                             set, entries, set->availAttrs));
3951            }
3952            if (isInside) {
3953                // Going in the middle, need to make space.
3954                memmove(entries+curEntry+1, entries+curEntry,
3955                        sizeof(bag_entry)*(set->numAttrs-curEntry));
3956                set->numAttrs++;
3957            }
3958            TABLE_NOISY(printf("#%d: Inserting new attribute: 0x%08x\n",
3959                         curEntry, newName));
3960        } else {
3961            TABLE_NOISY(printf("#%d: Replacing existing attribute: 0x%08x\n",
3962                         curEntry, oldName));
3963        }
3964
3965        bag_entry* cur = entries+curEntry;
3966
3967        cur->stringBlock = entry.package->header->index;
3968        cur->map.name.ident = newName;
3969        cur->map.value.copyFrom_dtoh(map->value);
3970        status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
3971        if (err != NO_ERROR) {
3972            ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
3973            return UNKNOWN_ERROR;
3974        }
3975
3976        TABLE_NOISY(printf("Setting entry #%d %p: block=%d, name=0x%08x, type=%d, data=0x%08x\n",
3977                     curEntry, cur, cur->stringBlock, cur->map.name.ident,
3978                     cur->map.value.dataType, cur->map.value.data));
3979
3980        // On to the next!
3981        curEntry++;
3982        pos++;
3983        const size_t size = dtohs(map->value.size);
3984        curOff += size + sizeof(*map)-sizeof(map->value);
3985    };
3986
3987    if (curEntry > set->numAttrs) {
3988        set->numAttrs = curEntry;
3989    }
3990
3991    // And this is it...
3992    typeSet[e] = set;
3993    if (set) {
3994        if (outTypeSpecFlags != NULL) {
3995            *outTypeSpecFlags = set->typeSpecFlags;
3996        }
3997        *outBag = (bag_entry*)(set+1);
3998        TABLE_NOISY(ALOGI("Returning %d attrs\n", set->numAttrs));
3999        return set->numAttrs;
4000    }
4001    return BAD_INDEX;
4002}
4003
4004void ResTable::setParameters(const ResTable_config* params)
4005{
4006    mLock.lock();
4007    TABLE_GETENTRY(ALOGI("Setting parameters: %s\n", params->toString().string()));
4008    mParams = *params;
4009    for (size_t i=0; i<mPackageGroups.size(); i++) {
4010        TABLE_NOISY(ALOGI("CLEARING BAGS FOR GROUP %d!", i));
4011        mPackageGroups[i]->clearBagCache();
4012    }
4013    mLock.unlock();
4014}
4015
4016void ResTable::getParameters(ResTable_config* params) const
4017{
4018    mLock.lock();
4019    *params = mParams;
4020    mLock.unlock();
4021}
4022
4023struct id_name_map {
4024    uint32_t id;
4025    size_t len;
4026    char16_t name[6];
4027};
4028
4029const static id_name_map ID_NAMES[] = {
4030    { ResTable_map::ATTR_TYPE,  5, { '^', 't', 'y', 'p', 'e' } },
4031    { ResTable_map::ATTR_L10N,  5, { '^', 'l', '1', '0', 'n' } },
4032    { ResTable_map::ATTR_MIN,   4, { '^', 'm', 'i', 'n' } },
4033    { ResTable_map::ATTR_MAX,   4, { '^', 'm', 'a', 'x' } },
4034    { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4035    { ResTable_map::ATTR_ZERO,  5, { '^', 'z', 'e', 'r', 'o' } },
4036    { ResTable_map::ATTR_ONE,   4, { '^', 'o', 'n', 'e' } },
4037    { ResTable_map::ATTR_TWO,   4, { '^', 't', 'w', 'o' } },
4038    { ResTable_map::ATTR_FEW,   4, { '^', 'f', 'e', 'w' } },
4039    { ResTable_map::ATTR_MANY,  5, { '^', 'm', 'a', 'n', 'y' } },
4040};
4041
4042uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4043                                     const char16_t* type, size_t typeLen,
4044                                     const char16_t* package,
4045                                     size_t packageLen,
4046                                     uint32_t* outTypeSpecFlags) const
4047{
4048    TABLE_SUPER_NOISY(printf("Identifier for name: error=%d\n", mError));
4049
4050    // Check for internal resource identifier as the very first thing, so
4051    // that we will always find them even when there are no resources.
4052    if (name[0] == '^') {
4053        const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4054        size_t len;
4055        for (int i=0; i<N; i++) {
4056            const id_name_map* m = ID_NAMES + i;
4057            len = m->len;
4058            if (len != nameLen) {
4059                continue;
4060            }
4061            for (size_t j=1; j<len; j++) {
4062                if (m->name[j] != name[j]) {
4063                    goto nope;
4064                }
4065            }
4066            if (outTypeSpecFlags) {
4067                *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4068            }
4069            return m->id;
4070nope:
4071            ;
4072        }
4073        if (nameLen > 7) {
4074            if (name[1] == 'i' && name[2] == 'n'
4075                && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4076                && name[6] == '_') {
4077                int index = atoi(String8(name + 7, nameLen - 7).string());
4078                if (Res_CHECKID(index)) {
4079                    ALOGW("Array resource index: %d is too large.",
4080                         index);
4081                    return 0;
4082                }
4083                if (outTypeSpecFlags) {
4084                    *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4085                }
4086                return  Res_MAKEARRAY(index);
4087            }
4088        }
4089        return 0;
4090    }
4091
4092    if (mError != NO_ERROR) {
4093        return 0;
4094    }
4095
4096    bool fakePublic = false;
4097
4098    // Figure out the package and type we are looking in...
4099
4100    const char16_t* packageEnd = NULL;
4101    const char16_t* typeEnd = NULL;
4102    const char16_t* const nameEnd = name+nameLen;
4103    const char16_t* p = name;
4104    while (p < nameEnd) {
4105        if (*p == ':') packageEnd = p;
4106        else if (*p == '/') typeEnd = p;
4107        p++;
4108    }
4109    if (*name == '@') {
4110        name++;
4111        if (*name == '*') {
4112            fakePublic = true;
4113            name++;
4114        }
4115    }
4116    if (name >= nameEnd) {
4117        return 0;
4118    }
4119
4120    if (packageEnd) {
4121        package = name;
4122        packageLen = packageEnd-name;
4123        name = packageEnd+1;
4124    } else if (!package) {
4125        return 0;
4126    }
4127
4128    if (typeEnd) {
4129        type = name;
4130        typeLen = typeEnd-name;
4131        name = typeEnd+1;
4132    } else if (!type) {
4133        return 0;
4134    }
4135
4136    if (name >= nameEnd) {
4137        return 0;
4138    }
4139    nameLen = nameEnd-name;
4140
4141    TABLE_NOISY(printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4142                 String8(type, typeLen).string(),
4143                 String8(name, nameLen).string(),
4144                 String8(package, packageLen).string()));
4145
4146    const size_t NG = mPackageGroups.size();
4147    for (size_t ig=0; ig<NG; ig++) {
4148        const PackageGroup* group = mPackageGroups[ig];
4149
4150        if (strzcmp16(package, packageLen,
4151                      group->name.string(), group->name.size())) {
4152            TABLE_NOISY(printf("Skipping package group: %s\n", String8(group->name).string()));
4153            continue;
4154        }
4155
4156        const ssize_t ti = group->findType16(type, typeLen);
4157        if (ti < 0) {
4158            TABLE_NOISY(printf("Type not found in package %s\n", String8(group->name).string()));
4159            continue;
4160        }
4161
4162        const TypeList& typeList = group->types[ti];
4163        if (typeList.isEmpty()) {
4164            TABLE_NOISY(printf("Expected type structure not found in package %s for index %d\n",
4165                               String8(group->name).string(), ti));
4166            continue;
4167        }
4168
4169        const size_t typeCount = typeList.size();
4170        for (size_t i = 0; i < typeCount; i++) {
4171            const Type* t = typeList[i];
4172            const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4173            if (ei < 0) {
4174                continue;
4175            }
4176
4177            const size_t configCount = t->configs.size();
4178            for (size_t j = 0; j < configCount; j++) {
4179                const TypeVariant tv(t->configs[j]);
4180                for (TypeVariant::iterator iter = tv.beginEntries();
4181                     iter != tv.endEntries();
4182                     iter++) {
4183                    const ResTable_entry* entry = *iter;
4184                    if (entry == NULL) {
4185                        continue;
4186                    }
4187
4188                    if (dtohl(entry->key.index) == (size_t) ei) {
4189                        uint32_t resId = Res_MAKEID(group->id - 1, ti, iter.index());
4190                        if (outTypeSpecFlags) {
4191                            Entry result;
4192                            if (getEntry(group, ti, iter.index(), NULL, &result) != NO_ERROR) {
4193                                ALOGW("Failed to find spec flags for %s:%s/%s (0x%08x)",
4194                                        String8(group->name).string(),
4195                                        String8(String16(type, typeLen)).string(),
4196                                        String8(String16(name, nameLen)).string(),
4197                                        resId);
4198                                return 0;
4199                            }
4200                            *outTypeSpecFlags = result.specFlags;
4201
4202                            if (fakePublic) {
4203                                *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4204                            }
4205                        }
4206                        return resId;
4207                    }
4208                }
4209            }
4210        }
4211        break;
4212    }
4213    return 0;
4214}
4215
4216bool ResTable::expandResourceRef(const uint16_t* refStr, size_t refLen,
4217                                 String16* outPackage,
4218                                 String16* outType,
4219                                 String16* outName,
4220                                 const String16* defType,
4221                                 const String16* defPackage,
4222                                 const char** outErrorMsg,
4223                                 bool* outPublicOnly)
4224{
4225    const char16_t* packageEnd = NULL;
4226    const char16_t* typeEnd = NULL;
4227    const char16_t* p = refStr;
4228    const char16_t* const end = p + refLen;
4229    while (p < end) {
4230        if (*p == ':') packageEnd = p;
4231        else if (*p == '/') {
4232            typeEnd = p;
4233            break;
4234        }
4235        p++;
4236    }
4237    p = refStr;
4238    if (*p == '@') p++;
4239
4240    if (outPublicOnly != NULL) {
4241        *outPublicOnly = true;
4242    }
4243    if (*p == '*') {
4244        p++;
4245        if (outPublicOnly != NULL) {
4246            *outPublicOnly = false;
4247        }
4248    }
4249
4250    if (packageEnd) {
4251        *outPackage = String16(p, packageEnd-p);
4252        p = packageEnd+1;
4253    } else {
4254        if (!defPackage) {
4255            if (outErrorMsg) {
4256                *outErrorMsg = "No resource package specified";
4257            }
4258            return false;
4259        }
4260        *outPackage = *defPackage;
4261    }
4262    if (typeEnd) {
4263        *outType = String16(p, typeEnd-p);
4264        p = typeEnd+1;
4265    } else {
4266        if (!defType) {
4267            if (outErrorMsg) {
4268                *outErrorMsg = "No resource type specified";
4269            }
4270            return false;
4271        }
4272        *outType = *defType;
4273    }
4274    *outName = String16(p, end-p);
4275    if(**outPackage == 0) {
4276        if(outErrorMsg) {
4277            *outErrorMsg = "Resource package cannot be an empty string";
4278        }
4279        return false;
4280    }
4281    if(**outType == 0) {
4282        if(outErrorMsg) {
4283            *outErrorMsg = "Resource type cannot be an empty string";
4284        }
4285        return false;
4286    }
4287    if(**outName == 0) {
4288        if(outErrorMsg) {
4289            *outErrorMsg = "Resource id cannot be an empty string";
4290        }
4291        return false;
4292    }
4293    return true;
4294}
4295
4296static uint32_t get_hex(char c, bool* outError)
4297{
4298    if (c >= '0' && c <= '9') {
4299        return c - '0';
4300    } else if (c >= 'a' && c <= 'f') {
4301        return c - 'a' + 0xa;
4302    } else if (c >= 'A' && c <= 'F') {
4303        return c - 'A' + 0xa;
4304    }
4305    *outError = true;
4306    return 0;
4307}
4308
4309struct unit_entry
4310{
4311    const char* name;
4312    size_t len;
4313    uint8_t type;
4314    uint32_t unit;
4315    float scale;
4316};
4317
4318static const unit_entry unitNames[] = {
4319    { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
4320    { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4321    { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4322    { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
4323    { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
4324    { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
4325    { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
4326    { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
4327    { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
4328    { NULL, 0, 0, 0, 0 }
4329};
4330
4331static bool parse_unit(const char* str, Res_value* outValue,
4332                       float* outScale, const char** outEnd)
4333{
4334    const char* end = str;
4335    while (*end != 0 && !isspace((unsigned char)*end)) {
4336        end++;
4337    }
4338    const size_t len = end-str;
4339
4340    const char* realEnd = end;
4341    while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
4342        realEnd++;
4343    }
4344    if (*realEnd != 0) {
4345        return false;
4346    }
4347
4348    const unit_entry* cur = unitNames;
4349    while (cur->name) {
4350        if (len == cur->len && strncmp(cur->name, str, len) == 0) {
4351            outValue->dataType = cur->type;
4352            outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
4353            *outScale = cur->scale;
4354            *outEnd = end;
4355            //printf("Found unit %s for %s\n", cur->name, str);
4356            return true;
4357        }
4358        cur++;
4359    }
4360
4361    return false;
4362}
4363
4364
4365bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
4366{
4367    while (len > 0 && isspace16(*s)) {
4368        s++;
4369        len--;
4370    }
4371
4372    if (len <= 0) {
4373        return false;
4374    }
4375
4376    size_t i = 0;
4377    int32_t val = 0;
4378    bool neg = false;
4379
4380    if (*s == '-') {
4381        neg = true;
4382        i++;
4383    }
4384
4385    if (s[i] < '0' || s[i] > '9') {
4386        return false;
4387    }
4388
4389    // Decimal or hex?
4390    if (s[i] == '0' && s[i+1] == 'x') {
4391        if (outValue)
4392            outValue->dataType = outValue->TYPE_INT_HEX;
4393        i += 2;
4394        bool error = false;
4395        while (i < len && !error) {
4396            val = (val*16) + get_hex(s[i], &error);
4397            i++;
4398        }
4399        if (error) {
4400            return false;
4401        }
4402    } else {
4403        if (outValue)
4404            outValue->dataType = outValue->TYPE_INT_DEC;
4405        while (i < len) {
4406            if (s[i] < '0' || s[i] > '9') {
4407                return false;
4408            }
4409            val = (val*10) + s[i]-'0';
4410            i++;
4411        }
4412    }
4413
4414    if (neg) val = -val;
4415
4416    while (i < len && isspace16(s[i])) {
4417        i++;
4418    }
4419
4420    if (i == len) {
4421        if (outValue)
4422            outValue->data = val;
4423        return true;
4424    }
4425
4426    return false;
4427}
4428
4429bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
4430{
4431    while (len > 0 && isspace16(*s)) {
4432        s++;
4433        len--;
4434    }
4435
4436    if (len <= 0) {
4437        return false;
4438    }
4439
4440    char buf[128];
4441    int i=0;
4442    while (len > 0 && *s != 0 && i < 126) {
4443        if (*s > 255) {
4444            return false;
4445        }
4446        buf[i++] = *s++;
4447        len--;
4448    }
4449
4450    if (len > 0) {
4451        return false;
4452    }
4453    if (buf[0] < '0' && buf[0] > '9' && buf[0] != '.') {
4454        return false;
4455    }
4456
4457    buf[i] = 0;
4458    const char* end;
4459    float f = strtof(buf, (char**)&end);
4460
4461    if (*end != 0 && !isspace((unsigned char)*end)) {
4462        // Might be a unit...
4463        float scale;
4464        if (parse_unit(end, outValue, &scale, &end)) {
4465            f *= scale;
4466            const bool neg = f < 0;
4467            if (neg) f = -f;
4468            uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4469            uint32_t radix;
4470            uint32_t shift;
4471            if ((bits&0x7fffff) == 0) {
4472                // Always use 23p0 if there is no fraction, just to make
4473                // things easier to read.
4474                radix = Res_value::COMPLEX_RADIX_23p0;
4475                shift = 23;
4476            } else if ((bits&0xffffffffff800000LL) == 0) {
4477                // Magnitude is zero -- can fit in 0 bits of precision.
4478                radix = Res_value::COMPLEX_RADIX_0p23;
4479                shift = 0;
4480            } else if ((bits&0xffffffff80000000LL) == 0) {
4481                // Magnitude can fit in 8 bits of precision.
4482                radix = Res_value::COMPLEX_RADIX_8p15;
4483                shift = 8;
4484            } else if ((bits&0xffffff8000000000LL) == 0) {
4485                // Magnitude can fit in 16 bits of precision.
4486                radix = Res_value::COMPLEX_RADIX_16p7;
4487                shift = 16;
4488            } else {
4489                // Magnitude needs entire range, so no fractional part.
4490                radix = Res_value::COMPLEX_RADIX_23p0;
4491                shift = 23;
4492            }
4493            int32_t mantissa = (int32_t)(
4494                (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
4495            if (neg) {
4496                mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
4497            }
4498            outValue->data |=
4499                (radix<<Res_value::COMPLEX_RADIX_SHIFT)
4500                | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
4501            //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
4502            //       f * (neg ? -1 : 1), bits, f*(1<<23),
4503            //       radix, shift, outValue->data);
4504            return true;
4505        }
4506        return false;
4507    }
4508
4509    while (*end != 0 && isspace((unsigned char)*end)) {
4510        end++;
4511    }
4512
4513    if (*end == 0) {
4514        if (outValue) {
4515            outValue->dataType = outValue->TYPE_FLOAT;
4516            *(float*)(&outValue->data) = f;
4517            return true;
4518        }
4519    }
4520
4521    return false;
4522}
4523
4524bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4525                             const char16_t* s, size_t len,
4526                             bool preserveSpaces, bool coerceType,
4527                             uint32_t attrID,
4528                             const String16* defType,
4529                             const String16* defPackage,
4530                             Accessor* accessor,
4531                             void* accessorCookie,
4532                             uint32_t attrType,
4533                             bool enforcePrivate) const
4534{
4535    bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4536    const char* errorMsg = NULL;
4537
4538    outValue->size = sizeof(Res_value);
4539    outValue->res0 = 0;
4540
4541    // First strip leading/trailing whitespace.  Do this before handling
4542    // escapes, so they can be used to force whitespace into the string.
4543    if (!preserveSpaces) {
4544        while (len > 0 && isspace16(*s)) {
4545            s++;
4546            len--;
4547        }
4548        while (len > 0 && isspace16(s[len-1])) {
4549            len--;
4550        }
4551        // If the string ends with '\', then we keep the space after it.
4552        if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4553            len++;
4554        }
4555    }
4556
4557    //printf("Value for: %s\n", String8(s, len).string());
4558
4559    uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4560    uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4561    bool fromAccessor = false;
4562    if (attrID != 0 && !Res_INTERNALID(attrID)) {
4563        const ssize_t p = getResourcePackageIndex(attrID);
4564        const bag_entry* bag;
4565        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4566        //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4567        if (cnt >= 0) {
4568            while (cnt > 0) {
4569                //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4570                switch (bag->map.name.ident) {
4571                case ResTable_map::ATTR_TYPE:
4572                    attrType = bag->map.value.data;
4573                    break;
4574                case ResTable_map::ATTR_MIN:
4575                    attrMin = bag->map.value.data;
4576                    break;
4577                case ResTable_map::ATTR_MAX:
4578                    attrMax = bag->map.value.data;
4579                    break;
4580                case ResTable_map::ATTR_L10N:
4581                    l10nReq = bag->map.value.data;
4582                    break;
4583                }
4584                bag++;
4585                cnt--;
4586            }
4587            unlockBag(bag);
4588        } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4589            fromAccessor = true;
4590            if (attrType == ResTable_map::TYPE_ENUM
4591                    || attrType == ResTable_map::TYPE_FLAGS
4592                    || attrType == ResTable_map::TYPE_INTEGER) {
4593                accessor->getAttributeMin(attrID, &attrMin);
4594                accessor->getAttributeMax(attrID, &attrMax);
4595            }
4596            if (localizationSetting) {
4597                l10nReq = accessor->getAttributeL10N(attrID);
4598            }
4599        }
4600    }
4601
4602    const bool canStringCoerce =
4603        coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4604
4605    if (*s == '@') {
4606        outValue->dataType = outValue->TYPE_REFERENCE;
4607
4608        // Note: we don't check attrType here because the reference can
4609        // be to any other type; we just need to count on the client making
4610        // sure the referenced type is correct.
4611
4612        //printf("Looking up ref: %s\n", String8(s, len).string());
4613
4614        // It's a reference!
4615        if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4616            outValue->data = 0;
4617            return true;
4618        } else {
4619            bool createIfNotFound = false;
4620            const char16_t* resourceRefName;
4621            int resourceNameLen;
4622            if (len > 2 && s[1] == '+') {
4623                createIfNotFound = true;
4624                resourceRefName = s + 2;
4625                resourceNameLen = len - 2;
4626            } else if (len > 2 && s[1] == '*') {
4627                enforcePrivate = false;
4628                resourceRefName = s + 2;
4629                resourceNameLen = len - 2;
4630            } else {
4631                createIfNotFound = false;
4632                resourceRefName = s + 1;
4633                resourceNameLen = len - 1;
4634            }
4635            String16 package, type, name;
4636            if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
4637                                   defType, defPackage, &errorMsg)) {
4638                if (accessor != NULL) {
4639                    accessor->reportError(accessorCookie, errorMsg);
4640                }
4641                return false;
4642            }
4643
4644            uint32_t specFlags = 0;
4645            uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
4646                    type.size(), package.string(), package.size(), &specFlags);
4647            if (rid != 0) {
4648                if (enforcePrivate) {
4649                    if (accessor == NULL || accessor->getAssetsPackage() != package) {
4650                        if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4651                            if (accessor != NULL) {
4652                                accessor->reportError(accessorCookie, "Resource is not public.");
4653                            }
4654                            return false;
4655                        }
4656                    }
4657                }
4658
4659                if (accessor) {
4660                    rid = Res_MAKEID(
4661                        accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4662                        Res_GETTYPE(rid), Res_GETENTRY(rid));
4663                    TABLE_NOISY(printf("Incl %s:%s/%s: 0x%08x\n",
4664                           String8(package).string(), String8(type).string(),
4665                           String8(name).string(), rid));
4666                }
4667
4668                uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4669                if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
4670                    outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4671                }
4672                outValue->data = rid;
4673                return true;
4674            }
4675
4676            if (accessor) {
4677                uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
4678                                                                       createIfNotFound);
4679                if (rid != 0) {
4680                    TABLE_NOISY(printf("Pckg %s:%s/%s: 0x%08x\n",
4681                           String8(package).string(), String8(type).string(),
4682                           String8(name).string(), rid));
4683                    uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4684                    if (packageId == 0x00) {
4685                        outValue->data = rid;
4686                        outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4687                        return true;
4688                    } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
4689                        // We accept packageId's generated as 0x01 in order to support
4690                        // building the android system resources
4691                        outValue->data = rid;
4692                        return true;
4693                    }
4694                }
4695            }
4696        }
4697
4698        if (accessor != NULL) {
4699            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4700        }
4701        return false;
4702    }
4703
4704    // if we got to here, and localization is required and it's not a reference,
4705    // complain and bail.
4706    if (l10nReq == ResTable_map::L10N_SUGGESTED) {
4707        if (localizationSetting) {
4708            if (accessor != NULL) {
4709                accessor->reportError(accessorCookie, "This attribute must be localized.");
4710            }
4711        }
4712    }
4713
4714    if (*s == '#') {
4715        // It's a color!  Convert to an integer of the form 0xaarrggbb.
4716        uint32_t color = 0;
4717        bool error = false;
4718        if (len == 4) {
4719            outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
4720            color |= 0xFF000000;
4721            color |= get_hex(s[1], &error) << 20;
4722            color |= get_hex(s[1], &error) << 16;
4723            color |= get_hex(s[2], &error) << 12;
4724            color |= get_hex(s[2], &error) << 8;
4725            color |= get_hex(s[3], &error) << 4;
4726            color |= get_hex(s[3], &error);
4727        } else if (len == 5) {
4728            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
4729            color |= get_hex(s[1], &error) << 28;
4730            color |= get_hex(s[1], &error) << 24;
4731            color |= get_hex(s[2], &error) << 20;
4732            color |= get_hex(s[2], &error) << 16;
4733            color |= get_hex(s[3], &error) << 12;
4734            color |= get_hex(s[3], &error) << 8;
4735            color |= get_hex(s[4], &error) << 4;
4736            color |= get_hex(s[4], &error);
4737        } else if (len == 7) {
4738            outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
4739            color |= 0xFF000000;
4740            color |= get_hex(s[1], &error) << 20;
4741            color |= get_hex(s[2], &error) << 16;
4742            color |= get_hex(s[3], &error) << 12;
4743            color |= get_hex(s[4], &error) << 8;
4744            color |= get_hex(s[5], &error) << 4;
4745            color |= get_hex(s[6], &error);
4746        } else if (len == 9) {
4747            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
4748            color |= get_hex(s[1], &error) << 28;
4749            color |= get_hex(s[2], &error) << 24;
4750            color |= get_hex(s[3], &error) << 20;
4751            color |= get_hex(s[4], &error) << 16;
4752            color |= get_hex(s[5], &error) << 12;
4753            color |= get_hex(s[6], &error) << 8;
4754            color |= get_hex(s[7], &error) << 4;
4755            color |= get_hex(s[8], &error);
4756        } else {
4757            error = true;
4758        }
4759        if (!error) {
4760            if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
4761                if (!canStringCoerce) {
4762                    if (accessor != NULL) {
4763                        accessor->reportError(accessorCookie,
4764                                "Color types not allowed");
4765                    }
4766                    return false;
4767                }
4768            } else {
4769                outValue->data = color;
4770                //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
4771                return true;
4772            }
4773        } else {
4774            if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
4775                if (accessor != NULL) {
4776                    accessor->reportError(accessorCookie, "Color value not valid --"
4777                            " must be #rgb, #argb, #rrggbb, or #aarrggbb");
4778                }
4779                #if 0
4780                fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
4781                        "Resource File", //(const char*)in->getPrintableSource(),
4782                        String8(*curTag).string(),
4783                        String8(s, len).string());
4784                #endif
4785                return false;
4786            }
4787        }
4788    }
4789
4790    if (*s == '?') {
4791        outValue->dataType = outValue->TYPE_ATTRIBUTE;
4792
4793        // Note: we don't check attrType here because the reference can
4794        // be to any other type; we just need to count on the client making
4795        // sure the referenced type is correct.
4796
4797        //printf("Looking up attr: %s\n", String8(s, len).string());
4798
4799        static const String16 attr16("attr");
4800        String16 package, type, name;
4801        if (!expandResourceRef(s+1, len-1, &package, &type, &name,
4802                               &attr16, defPackage, &errorMsg)) {
4803            if (accessor != NULL) {
4804                accessor->reportError(accessorCookie, errorMsg);
4805            }
4806            return false;
4807        }
4808
4809        //printf("Pkg: %s, Type: %s, Name: %s\n",
4810        //       String8(package).string(), String8(type).string(),
4811        //       String8(name).string());
4812        uint32_t specFlags = 0;
4813        uint32_t rid =
4814            identifierForName(name.string(), name.size(),
4815                              type.string(), type.size(),
4816                              package.string(), package.size(), &specFlags);
4817        if (rid != 0) {
4818            if (enforcePrivate) {
4819                if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4820                    if (accessor != NULL) {
4821                        accessor->reportError(accessorCookie, "Attribute is not public.");
4822                    }
4823                    return false;
4824                }
4825            }
4826            if (!accessor) {
4827                outValue->data = rid;
4828                return true;
4829            }
4830            rid = Res_MAKEID(
4831                accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4832                Res_GETTYPE(rid), Res_GETENTRY(rid));
4833            //printf("Incl %s:%s/%s: 0x%08x\n",
4834            //       String8(package).string(), String8(type).string(),
4835            //       String8(name).string(), rid);
4836            outValue->data = rid;
4837            return true;
4838        }
4839
4840        if (accessor) {
4841            uint32_t rid = accessor->getCustomResource(package, type, name);
4842            if (rid != 0) {
4843                //printf("Mine %s:%s/%s: 0x%08x\n",
4844                //       String8(package).string(), String8(type).string(),
4845                //       String8(name).string(), rid);
4846                outValue->data = rid;
4847                return true;
4848            }
4849        }
4850
4851        if (accessor != NULL) {
4852            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4853        }
4854        return false;
4855    }
4856
4857    if (stringToInt(s, len, outValue)) {
4858        if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
4859            // If this type does not allow integers, but does allow floats,
4860            // fall through on this error case because the float type should
4861            // be able to accept any integer value.
4862            if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
4863                if (accessor != NULL) {
4864                    accessor->reportError(accessorCookie, "Integer types not allowed");
4865                }
4866                return false;
4867            }
4868        } else {
4869            if (((int32_t)outValue->data) < ((int32_t)attrMin)
4870                    || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
4871                if (accessor != NULL) {
4872                    accessor->reportError(accessorCookie, "Integer value out of range");
4873                }
4874                return false;
4875            }
4876            return true;
4877        }
4878    }
4879
4880    if (stringToFloat(s, len, outValue)) {
4881        if (outValue->dataType == Res_value::TYPE_DIMENSION) {
4882            if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
4883                return true;
4884            }
4885            if (!canStringCoerce) {
4886                if (accessor != NULL) {
4887                    accessor->reportError(accessorCookie, "Dimension types not allowed");
4888                }
4889                return false;
4890            }
4891        } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
4892            if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
4893                return true;
4894            }
4895            if (!canStringCoerce) {
4896                if (accessor != NULL) {
4897                    accessor->reportError(accessorCookie, "Fraction types not allowed");
4898                }
4899                return false;
4900            }
4901        } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
4902            if (!canStringCoerce) {
4903                if (accessor != NULL) {
4904                    accessor->reportError(accessorCookie, "Float types not allowed");
4905                }
4906                return false;
4907            }
4908        } else {
4909            return true;
4910        }
4911    }
4912
4913    if (len == 4) {
4914        if ((s[0] == 't' || s[0] == 'T') &&
4915            (s[1] == 'r' || s[1] == 'R') &&
4916            (s[2] == 'u' || s[2] == 'U') &&
4917            (s[3] == 'e' || s[3] == 'E')) {
4918            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4919                if (!canStringCoerce) {
4920                    if (accessor != NULL) {
4921                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4922                    }
4923                    return false;
4924                }
4925            } else {
4926                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4927                outValue->data = (uint32_t)-1;
4928                return true;
4929            }
4930        }
4931    }
4932
4933    if (len == 5) {
4934        if ((s[0] == 'f' || s[0] == 'F') &&
4935            (s[1] == 'a' || s[1] == 'A') &&
4936            (s[2] == 'l' || s[2] == 'L') &&
4937            (s[3] == 's' || s[3] == 'S') &&
4938            (s[4] == 'e' || s[4] == 'E')) {
4939            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4940                if (!canStringCoerce) {
4941                    if (accessor != NULL) {
4942                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4943                    }
4944                    return false;
4945                }
4946            } else {
4947                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4948                outValue->data = 0;
4949                return true;
4950            }
4951        }
4952    }
4953
4954    if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
4955        const ssize_t p = getResourcePackageIndex(attrID);
4956        const bag_entry* bag;
4957        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4958        //printf("Got %d for enum\n", cnt);
4959        if (cnt >= 0) {
4960            resource_name rname;
4961            while (cnt > 0) {
4962                if (!Res_INTERNALID(bag->map.name.ident)) {
4963                    //printf("Trying attr #%08x\n", bag->map.name.ident);
4964                    if (getResourceName(bag->map.name.ident, false, &rname)) {
4965                        #if 0
4966                        printf("Matching %s against %s (0x%08x)\n",
4967                               String8(s, len).string(),
4968                               String8(rname.name, rname.nameLen).string(),
4969                               bag->map.name.ident);
4970                        #endif
4971                        if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
4972                            outValue->dataType = bag->map.value.dataType;
4973                            outValue->data = bag->map.value.data;
4974                            unlockBag(bag);
4975                            return true;
4976                        }
4977                    }
4978
4979                }
4980                bag++;
4981                cnt--;
4982            }
4983            unlockBag(bag);
4984        }
4985
4986        if (fromAccessor) {
4987            if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
4988                return true;
4989            }
4990        }
4991    }
4992
4993    if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
4994        const ssize_t p = getResourcePackageIndex(attrID);
4995        const bag_entry* bag;
4996        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4997        //printf("Got %d for flags\n", cnt);
4998        if (cnt >= 0) {
4999            bool failed = false;
5000            resource_name rname;
5001            outValue->dataType = Res_value::TYPE_INT_HEX;
5002            outValue->data = 0;
5003            const char16_t* end = s + len;
5004            const char16_t* pos = s;
5005            while (pos < end && !failed) {
5006                const char16_t* start = pos;
5007                pos++;
5008                while (pos < end && *pos != '|') {
5009                    pos++;
5010                }
5011                //printf("Looking for: %s\n", String8(start, pos-start).string());
5012                const bag_entry* bagi = bag;
5013                ssize_t i;
5014                for (i=0; i<cnt; i++, bagi++) {
5015                    if (!Res_INTERNALID(bagi->map.name.ident)) {
5016                        //printf("Trying attr #%08x\n", bagi->map.name.ident);
5017                        if (getResourceName(bagi->map.name.ident, false, &rname)) {
5018                            #if 0
5019                            printf("Matching %s against %s (0x%08x)\n",
5020                                   String8(start,pos-start).string(),
5021                                   String8(rname.name, rname.nameLen).string(),
5022                                   bagi->map.name.ident);
5023                            #endif
5024                            if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5025                                outValue->data |= bagi->map.value.data;
5026                                break;
5027                            }
5028                        }
5029                    }
5030                }
5031                if (i >= cnt) {
5032                    // Didn't find this flag identifier.
5033                    failed = true;
5034                }
5035                if (pos < end) {
5036                    pos++;
5037                }
5038            }
5039            unlockBag(bag);
5040            if (!failed) {
5041                //printf("Final flag value: 0x%lx\n", outValue->data);
5042                return true;
5043            }
5044        }
5045
5046
5047        if (fromAccessor) {
5048            if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5049                //printf("Final flag value: 0x%lx\n", outValue->data);
5050                return true;
5051            }
5052        }
5053    }
5054
5055    if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5056        if (accessor != NULL) {
5057            accessor->reportError(accessorCookie, "String types not allowed");
5058        }
5059        return false;
5060    }
5061
5062    // Generic string handling...
5063    outValue->dataType = outValue->TYPE_STRING;
5064    if (outString) {
5065        bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5066        if (accessor != NULL) {
5067            accessor->reportError(accessorCookie, errorMsg);
5068        }
5069        return failed;
5070    }
5071
5072    return true;
5073}
5074
5075bool ResTable::collectString(String16* outString,
5076                             const char16_t* s, size_t len,
5077                             bool preserveSpaces,
5078                             const char** outErrorMsg,
5079                             bool append)
5080{
5081    String16 tmp;
5082
5083    char quoted = 0;
5084    const char16_t* p = s;
5085    while (p < (s+len)) {
5086        while (p < (s+len)) {
5087            const char16_t c = *p;
5088            if (c == '\\') {
5089                break;
5090            }
5091            if (!preserveSpaces) {
5092                if (quoted == 0 && isspace16(c)
5093                    && (c != ' ' || isspace16(*(p+1)))) {
5094                    break;
5095                }
5096                if (c == '"' && (quoted == 0 || quoted == '"')) {
5097                    break;
5098                }
5099                if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5100                    /*
5101                     * In practice, when people write ' instead of \'
5102                     * in a string, they are doing it by accident
5103                     * instead of really meaning to use ' as a quoting
5104                     * character.  Warn them so they don't lose it.
5105                     */
5106                    if (outErrorMsg) {
5107                        *outErrorMsg = "Apostrophe not preceded by \\";
5108                    }
5109                    return false;
5110                }
5111            }
5112            p++;
5113        }
5114        if (p < (s+len)) {
5115            if (p > s) {
5116                tmp.append(String16(s, p-s));
5117            }
5118            if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5119                if (quoted == 0) {
5120                    quoted = *p;
5121                } else {
5122                    quoted = 0;
5123                }
5124                p++;
5125            } else if (!preserveSpaces && isspace16(*p)) {
5126                // Space outside of a quote -- consume all spaces and
5127                // leave a single plain space char.
5128                tmp.append(String16(" "));
5129                p++;
5130                while (p < (s+len) && isspace16(*p)) {
5131                    p++;
5132                }
5133            } else if (*p == '\\') {
5134                p++;
5135                if (p < (s+len)) {
5136                    switch (*p) {
5137                    case 't':
5138                        tmp.append(String16("\t"));
5139                        break;
5140                    case 'n':
5141                        tmp.append(String16("\n"));
5142                        break;
5143                    case '#':
5144                        tmp.append(String16("#"));
5145                        break;
5146                    case '@':
5147                        tmp.append(String16("@"));
5148                        break;
5149                    case '?':
5150                        tmp.append(String16("?"));
5151                        break;
5152                    case '"':
5153                        tmp.append(String16("\""));
5154                        break;
5155                    case '\'':
5156                        tmp.append(String16("'"));
5157                        break;
5158                    case '\\':
5159                        tmp.append(String16("\\"));
5160                        break;
5161                    case 'u':
5162                    {
5163                        char16_t chr = 0;
5164                        int i = 0;
5165                        while (i < 4 && p[1] != 0) {
5166                            p++;
5167                            i++;
5168                            int c;
5169                            if (*p >= '0' && *p <= '9') {
5170                                c = *p - '0';
5171                            } else if (*p >= 'a' && *p <= 'f') {
5172                                c = *p - 'a' + 10;
5173                            } else if (*p >= 'A' && *p <= 'F') {
5174                                c = *p - 'A' + 10;
5175                            } else {
5176                                if (outErrorMsg) {
5177                                    *outErrorMsg = "Bad character in \\u unicode escape sequence";
5178                                }
5179                                return false;
5180                            }
5181                            chr = (chr<<4) | c;
5182                        }
5183                        tmp.append(String16(&chr, 1));
5184                    } break;
5185                    default:
5186                        // ignore unknown escape chars.
5187                        break;
5188                    }
5189                    p++;
5190                }
5191            }
5192            len -= (p-s);
5193            s = p;
5194        }
5195    }
5196
5197    if (tmp.size() != 0) {
5198        if (len > 0) {
5199            tmp.append(String16(s, len));
5200        }
5201        if (append) {
5202            outString->append(tmp);
5203        } else {
5204            outString->setTo(tmp);
5205        }
5206    } else {
5207        if (append) {
5208            outString->append(String16(s, len));
5209        } else {
5210            outString->setTo(s, len);
5211        }
5212    }
5213
5214    return true;
5215}
5216
5217size_t ResTable::getBasePackageCount() const
5218{
5219    if (mError != NO_ERROR) {
5220        return 0;
5221    }
5222    return mPackageGroups.size();
5223}
5224
5225const String16 ResTable::getBasePackageName(size_t idx) const
5226{
5227    if (mError != NO_ERROR) {
5228        return String16();
5229    }
5230    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5231                 "Requested package index %d past package count %d",
5232                 (int)idx, (int)mPackageGroups.size());
5233    return mPackageGroups[idx]->name;
5234}
5235
5236uint32_t ResTable::getBasePackageId(size_t idx) const
5237{
5238    if (mError != NO_ERROR) {
5239        return 0;
5240    }
5241    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5242                 "Requested package index %d past package count %d",
5243                 (int)idx, (int)mPackageGroups.size());
5244    return mPackageGroups[idx]->id;
5245}
5246
5247uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
5248{
5249    if (mError != NO_ERROR) {
5250        return 0;
5251    }
5252    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5253            "Requested package index %d past package count %d",
5254            (int)idx, (int)mPackageGroups.size());
5255    const PackageGroup* const group = mPackageGroups[idx];
5256    return group->largestTypeId;
5257}
5258
5259size_t ResTable::getTableCount() const
5260{
5261    return mHeaders.size();
5262}
5263
5264const ResStringPool* ResTable::getTableStringBlock(size_t index) const
5265{
5266    return &mHeaders[index]->values;
5267}
5268
5269int32_t ResTable::getTableCookie(size_t index) const
5270{
5271    return mHeaders[index]->cookie;
5272}
5273
5274const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
5275{
5276    const size_t N = mPackageGroups.size();
5277    for (size_t i = 0; i < N; i++) {
5278        const PackageGroup* pg = mPackageGroups[i];
5279        size_t M = pg->packages.size();
5280        for (size_t j = 0; j < M; j++) {
5281            if (pg->packages[j]->header->cookie == cookie) {
5282                return &pg->dynamicRefTable;
5283            }
5284        }
5285    }
5286    return NULL;
5287}
5288
5289void ResTable::getConfigurations(Vector<ResTable_config>* configs) const
5290{
5291    const size_t packageCount = mPackageGroups.size();
5292    for (size_t i = 0; i < packageCount; i++) {
5293        const PackageGroup* packageGroup = mPackageGroups[i];
5294        const size_t typeCount = packageGroup->types.size();
5295        for (size_t j = 0; j < typeCount; j++) {
5296            const TypeList& typeList = packageGroup->types[j];
5297            const size_t numTypes = typeList.size();
5298            for (size_t k = 0; k < numTypes; k++) {
5299                const Type* type = typeList[k];
5300                const size_t numConfigs = type->configs.size();
5301                for (size_t m = 0; m < numConfigs; m++) {
5302                    const ResTable_type* config = type->configs[m];
5303                    ResTable_config cfg;
5304                    memset(&cfg, 0, sizeof(ResTable_config));
5305                    cfg.copyFromDtoH(config->config);
5306                    // only insert unique
5307                    const size_t N = configs->size();
5308                    size_t n;
5309                    for (n = 0; n < N; n++) {
5310                        if (0 == (*configs)[n].compare(cfg)) {
5311                            break;
5312                        }
5313                    }
5314                    // if we didn't find it
5315                    if (n == N) {
5316                        configs->add(cfg);
5317                    }
5318                }
5319            }
5320        }
5321    }
5322}
5323
5324void ResTable::getLocales(Vector<String8>* locales) const
5325{
5326    Vector<ResTable_config> configs;
5327    ALOGV("calling getConfigurations");
5328    getConfigurations(&configs);
5329    ALOGV("called getConfigurations size=%d", (int)configs.size());
5330    const size_t I = configs.size();
5331
5332    char locale[RESTABLE_MAX_LOCALE_LEN];
5333    for (size_t i=0; i<I; i++) {
5334        configs[i].getBcp47Locale(locale);
5335        const size_t J = locales->size();
5336        size_t j;
5337        for (j=0; j<J; j++) {
5338            if (0 == strcmp(locale, (*locales)[j].string())) {
5339                break;
5340            }
5341        }
5342        if (j == J) {
5343            locales->add(String8(locale));
5344        }
5345    }
5346}
5347
5348StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
5349    : mPool(pool), mIndex(index) {}
5350
5351StringPoolRef::StringPoolRef()
5352    : mPool(NULL), mIndex(0) {}
5353
5354const char* StringPoolRef::string8(size_t* outLen) const {
5355    if (mPool != NULL) {
5356        return mPool->string8At(mIndex, outLen);
5357    }
5358    if (outLen != NULL) {
5359        *outLen = 0;
5360    }
5361    return NULL;
5362}
5363
5364const char16_t* StringPoolRef::string16(size_t* outLen) const {
5365    if (mPool != NULL) {
5366        return mPool->stringAt(mIndex, outLen);
5367    }
5368    if (outLen != NULL) {
5369        *outLen = 0;
5370    }
5371    return NULL;
5372}
5373
5374status_t ResTable::getEntry(
5375        const PackageGroup* packageGroup, int typeIndex, int entryIndex,
5376        const ResTable_config* config,
5377        Entry* outEntry) const
5378{
5379    const TypeList& typeList = packageGroup->types[typeIndex];
5380    if (typeList.isEmpty()) {
5381        ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
5382        return BAD_TYPE;
5383    }
5384
5385    const ResTable_type* bestType = NULL;
5386    uint32_t bestOffset = ResTable_type::NO_ENTRY;
5387    const Package* bestPackage = NULL;
5388    uint32_t specFlags = 0;
5389    uint8_t actualTypeIndex = typeIndex;
5390    ResTable_config bestConfig;
5391    memset(&bestConfig, 0, sizeof(bestConfig));
5392
5393    // Iterate over the Types of each package.
5394    const size_t typeCount = typeList.size();
5395    for (size_t i = 0; i < typeCount; i++) {
5396        const Type* const typeSpec = typeList[i];
5397
5398        int realEntryIndex = entryIndex;
5399        int realTypeIndex = typeIndex;
5400        bool currentTypeIsOverlay = false;
5401
5402        // Runtime overlay packages provide a mapping of app resource
5403        // ID to package resource ID.
5404        if (typeSpec->idmapEntries.hasEntries()) {
5405            uint16_t overlayEntryIndex;
5406            if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
5407                // No such mapping exists
5408                continue;
5409            }
5410            realEntryIndex = overlayEntryIndex;
5411            realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
5412            currentTypeIsOverlay = true;
5413        }
5414
5415        if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
5416            ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
5417                    Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
5418                    entryIndex, static_cast<int>(typeSpec->entryCount));
5419            // We should normally abort here, but some legacy apps declare
5420            // resources in the 'android' package (old bug in AAPT).
5421            continue;
5422        }
5423
5424        // Aggregate all the flags for each package that defines this entry.
5425        if (typeSpec->typeSpecFlags != NULL) {
5426            specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
5427        } else {
5428            specFlags = -1;
5429        }
5430
5431        const size_t numConfigs = typeSpec->configs.size();
5432        for (size_t c = 0; c < numConfigs; c++) {
5433            const ResTable_type* const thisType = typeSpec->configs[c];
5434            if (thisType == NULL) {
5435                continue;
5436            }
5437
5438            ResTable_config thisConfig;
5439            thisConfig.copyFromDtoH(thisType->config);
5440
5441            // Check to make sure this one is valid for the current parameters.
5442            if (config != NULL && !thisConfig.match(*config)) {
5443                continue;
5444            }
5445
5446            // Check if there is the desired entry in this type.
5447            const uint8_t* const end = reinterpret_cast<const uint8_t*>(thisType)
5448                    + dtohl(thisType->header.size);
5449            const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
5450                    reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
5451
5452            uint32_t thisOffset = dtohl(eindex[realEntryIndex]);
5453            if (thisOffset == ResTable_type::NO_ENTRY) {
5454                // There is no entry for this index and configuration.
5455                continue;
5456            }
5457
5458            if (bestType != NULL) {
5459                // Check if this one is less specific than the last found.  If so,
5460                // we will skip it.  We check starting with things we most care
5461                // about to those we least care about.
5462                if (!thisConfig.isBetterThan(bestConfig, config)) {
5463                    if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
5464                        continue;
5465                    }
5466                }
5467            }
5468
5469            bestType = thisType;
5470            bestOffset = thisOffset;
5471            bestConfig = thisConfig;
5472            bestPackage = typeSpec->package;
5473            actualTypeIndex = realTypeIndex;
5474
5475            // If no config was specified, any type will do, so skip
5476            if (config == NULL) {
5477                break;
5478            }
5479        }
5480    }
5481
5482    if (bestType == NULL) {
5483        return BAD_INDEX;
5484    }
5485
5486    bestOffset += dtohl(bestType->entriesStart);
5487
5488    if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
5489        ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
5490                bestOffset, dtohl(bestType->header.size));
5491        return BAD_TYPE;
5492    }
5493    if ((bestOffset & 0x3) != 0) {
5494        ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
5495        return BAD_TYPE;
5496    }
5497
5498    const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
5499            reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
5500    if (dtohs(entry->size) < sizeof(*entry)) {
5501        ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
5502        return BAD_TYPE;
5503    }
5504
5505    if (outEntry != NULL) {
5506        outEntry->entry = entry;
5507        outEntry->config = bestConfig;
5508        outEntry->type = bestType;
5509        outEntry->specFlags = specFlags;
5510        outEntry->package = bestPackage;
5511        outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
5512        outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
5513    }
5514    return NO_ERROR;
5515}
5516
5517status_t ResTable::parsePackage(const ResTable_package* const pkg,
5518                                const Header* const header)
5519{
5520    const uint8_t* base = (const uint8_t*)pkg;
5521    status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
5522                                  header->dataEnd, "ResTable_package");
5523    if (err != NO_ERROR) {
5524        return (mError=err);
5525    }
5526
5527    const uint32_t pkgSize = dtohl(pkg->header.size);
5528
5529    if (dtohl(pkg->typeStrings) >= pkgSize) {
5530        ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
5531             dtohl(pkg->typeStrings), pkgSize);
5532        return (mError=BAD_TYPE);
5533    }
5534    if ((dtohl(pkg->typeStrings)&0x3) != 0) {
5535        ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
5536             dtohl(pkg->typeStrings));
5537        return (mError=BAD_TYPE);
5538    }
5539    if (dtohl(pkg->keyStrings) >= pkgSize) {
5540        ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
5541             dtohl(pkg->keyStrings), pkgSize);
5542        return (mError=BAD_TYPE);
5543    }
5544    if ((dtohl(pkg->keyStrings)&0x3) != 0) {
5545        ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
5546             dtohl(pkg->keyStrings));
5547        return (mError=BAD_TYPE);
5548    }
5549
5550    uint32_t id = dtohl(pkg->id);
5551    KeyedVector<uint8_t, IdmapEntries> idmapEntries;
5552
5553    if (header->resourceIDMap != NULL) {
5554        uint8_t targetPackageId = 0;
5555        status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
5556        if (err != NO_ERROR) {
5557            ALOGW("Overlay is broken");
5558            return (mError=err);
5559        }
5560        id = targetPackageId;
5561    }
5562
5563    if (id >= 256) {
5564        LOG_ALWAYS_FATAL("Package id out of range");
5565        return NO_ERROR;
5566    } else if (id == 0) {
5567        // This is a library so assign an ID
5568        id = mNextPackageId++;
5569    }
5570
5571    PackageGroup* group = NULL;
5572    Package* package = new Package(this, header, pkg);
5573    if (package == NULL) {
5574        return (mError=NO_MEMORY);
5575    }
5576
5577    err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
5578                                   header->dataEnd-(base+dtohl(pkg->typeStrings)));
5579    if (err != NO_ERROR) {
5580        delete group;
5581        delete package;
5582        return (mError=err);
5583    }
5584
5585    err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
5586                                  header->dataEnd-(base+dtohl(pkg->keyStrings)));
5587    if (err != NO_ERROR) {
5588        delete group;
5589        delete package;
5590        return (mError=err);
5591    }
5592
5593    size_t idx = mPackageMap[id];
5594    if (idx == 0) {
5595        idx = mPackageGroups.size() + 1;
5596
5597        char16_t tmpName[sizeof(pkg->name)/sizeof(char16_t)];
5598        strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(char16_t));
5599        group = new PackageGroup(this, String16(tmpName), id);
5600        if (group == NULL) {
5601            delete package;
5602            return (mError=NO_MEMORY);
5603        }
5604
5605        //printf("Adding new package id %d at index %d\n", id, idx);
5606        err = mPackageGroups.add(group);
5607        if (err < NO_ERROR) {
5608            return (mError=err);
5609        }
5610
5611        mPackageMap[id] = static_cast<uint8_t>(idx);
5612
5613        // Find all packages that reference this package
5614        size_t N = mPackageGroups.size();
5615        for (size_t i = 0; i < N; i++) {
5616            mPackageGroups[i]->dynamicRefTable.addMapping(
5617                    group->name, static_cast<uint8_t>(group->id));
5618        }
5619    } else {
5620        group = mPackageGroups.itemAt(idx - 1);
5621        if (group == NULL) {
5622            return (mError=UNKNOWN_ERROR);
5623        }
5624    }
5625
5626    err = group->packages.add(package);
5627    if (err < NO_ERROR) {
5628        return (mError=err);
5629    }
5630
5631    // Iterate through all chunks.
5632    const ResChunk_header* chunk =
5633        (const ResChunk_header*)(((const uint8_t*)pkg)
5634                                 + dtohs(pkg->header.headerSize));
5635    const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
5636    while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
5637           ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
5638        TABLE_NOISY(ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
5639                         dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
5640                         (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
5641        const size_t csize = dtohl(chunk->size);
5642        const uint16_t ctype = dtohs(chunk->type);
5643        if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
5644            const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
5645            err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
5646                                 endPos, "ResTable_typeSpec");
5647            if (err != NO_ERROR) {
5648                return (mError=err);
5649            }
5650
5651            const size_t typeSpecSize = dtohl(typeSpec->header.size);
5652            const size_t newEntryCount = dtohl(typeSpec->entryCount);
5653
5654            LOAD_TABLE_NOISY(printf("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5655                                    (void*)(base-(const uint8_t*)chunk),
5656                                    dtohs(typeSpec->header.type),
5657                                    dtohs(typeSpec->header.headerSize),
5658                                    (void*)typeSpecSize));
5659            // look for block overrun or int overflow when multiplying by 4
5660            if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
5661                    || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5662                    > typeSpecSize)) {
5663                ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
5664                        (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5665                        (void*)typeSpecSize);
5666                return (mError=BAD_TYPE);
5667            }
5668
5669            if (typeSpec->id == 0) {
5670                ALOGW("ResTable_type has an id of 0.");
5671                return (mError=BAD_TYPE);
5672            }
5673
5674            if (newEntryCount > 0) {
5675                uint8_t typeIndex = typeSpec->id - 1;
5676                ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
5677                if (idmapIndex >= 0) {
5678                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5679                }
5680
5681                TypeList& typeList = group->types.editItemAt(typeIndex);
5682                if (!typeList.isEmpty()) {
5683                    const Type* existingType = typeList[0];
5684                    if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
5685                        ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
5686                                (int) newEntryCount, (int) existingType->entryCount);
5687                        // We should normally abort here, but some legacy apps declare
5688                        // resources in the 'android' package (old bug in AAPT).
5689                    }
5690                }
5691
5692                Type* t = new Type(header, package, newEntryCount);
5693                t->typeSpec = typeSpec;
5694                t->typeSpecFlags = (const uint32_t*)(
5695                        ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
5696                if (idmapIndex >= 0) {
5697                    t->idmapEntries = idmapEntries[idmapIndex];
5698                }
5699                typeList.add(t);
5700                group->largestTypeId = max(group->largestTypeId, typeSpec->id);
5701            } else {
5702                ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
5703            }
5704
5705        } else if (ctype == RES_TABLE_TYPE_TYPE) {
5706            const ResTable_type* type = (const ResTable_type*)(chunk);
5707            err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
5708                                 endPos, "ResTable_type");
5709            if (err != NO_ERROR) {
5710                return (mError=err);
5711            }
5712
5713            const uint32_t typeSize = dtohl(type->header.size);
5714            const size_t newEntryCount = dtohl(type->entryCount);
5715
5716            LOAD_TABLE_NOISY(printf("Type off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5717                                    (void*)(base-(const uint8_t*)chunk),
5718                                    dtohs(type->header.type),
5719                                    dtohs(type->header.headerSize),
5720                                    (void*)typeSize));
5721            if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5722                    > typeSize) {
5723                ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
5724                        (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5725                        typeSize);
5726                return (mError=BAD_TYPE);
5727            }
5728
5729            if (newEntryCount != 0
5730                && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
5731                ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
5732                     dtohl(type->entriesStart), typeSize);
5733                return (mError=BAD_TYPE);
5734            }
5735
5736            if (type->id == 0) {
5737                ALOGW("ResTable_type has an id of 0.");
5738                return (mError=BAD_TYPE);
5739            }
5740
5741            if (newEntryCount > 0) {
5742                uint8_t typeIndex = type->id - 1;
5743                ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
5744                if (idmapIndex >= 0) {
5745                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5746                }
5747
5748                TypeList& typeList = group->types.editItemAt(typeIndex);
5749                if (typeList.isEmpty()) {
5750                    ALOGE("No TypeSpec for type %d", type->id);
5751                    return (mError=BAD_TYPE);
5752                }
5753
5754                Type* t = typeList.editItemAt(typeList.size() - 1);
5755                if (newEntryCount != t->entryCount) {
5756                    ALOGE("ResTable_type entry count inconsistent: given %d, previously %d",
5757                        (int)newEntryCount, (int)t->entryCount);
5758                    return (mError=BAD_TYPE);
5759                }
5760
5761                if (t->package != package) {
5762                    ALOGE("No TypeSpec for type %d", type->id);
5763                    return (mError=BAD_TYPE);
5764                }
5765
5766                t->configs.add(type);
5767
5768                TABLE_GETENTRY(
5769                    ResTable_config thisConfig;
5770                    thisConfig.copyFromDtoH(type->config);
5771                    ALOGI("Adding config to type %d: %s\n",
5772                          type->id, thisConfig.toString().string()));
5773            } else {
5774                ALOGV("Skipping empty ResTable_type for type %d", type->id);
5775            }
5776
5777        } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
5778            if (group->dynamicRefTable.entries().size() == 0) {
5779                status_t err = group->dynamicRefTable.load((const ResTable_lib_header*) chunk);
5780                if (err != NO_ERROR) {
5781                    return (mError=err);
5782                }
5783
5784                // Fill in the reference table with the entries we already know about.
5785                size_t N = mPackageGroups.size();
5786                for (size_t i = 0; i < N; i++) {
5787                    group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
5788                }
5789            } else {
5790                ALOGW("Found multiple library tables, ignoring...");
5791            }
5792        } else {
5793            status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
5794                                          endPos, "ResTable_package:unknown");
5795            if (err != NO_ERROR) {
5796                return (mError=err);
5797            }
5798        }
5799        chunk = (const ResChunk_header*)
5800            (((const uint8_t*)chunk) + csize);
5801    }
5802
5803    return NO_ERROR;
5804}
5805
5806DynamicRefTable::DynamicRefTable(uint8_t packageId)
5807    : mAssignedPackageId(packageId)
5808{
5809    memset(mLookupTable, 0, sizeof(mLookupTable));
5810
5811    // Reserved package ids
5812    mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
5813    mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
5814}
5815
5816status_t DynamicRefTable::load(const ResTable_lib_header* const header)
5817{
5818    const uint32_t entryCount = dtohl(header->count);
5819    const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
5820    const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
5821    if (sizeOfEntries > expectedSize) {
5822        ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
5823                expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
5824        return UNKNOWN_ERROR;
5825    }
5826
5827    const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
5828            dtohl(header->header.headerSize));
5829    for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
5830        uint32_t packageId = dtohl(entry->packageId);
5831        char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
5832        strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
5833        LIB_NOISY(ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
5834                dtohl(entry->packageId)));
5835        if (packageId >= 256) {
5836            ALOGE("Bad package id 0x%08x", packageId);
5837            return UNKNOWN_ERROR;
5838        }
5839        mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
5840        entry = entry + 1;
5841    }
5842    return NO_ERROR;
5843}
5844
5845status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
5846{
5847    ssize_t index = mEntries.indexOfKey(packageName);
5848    if (index < 0) {
5849        return UNKNOWN_ERROR;
5850    }
5851    mLookupTable[mEntries.valueAt(index)] = packageId;
5852    return NO_ERROR;
5853}
5854
5855status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
5856    uint32_t res = *resId;
5857    size_t packageId = Res_GETPACKAGE(res) + 1;
5858
5859    if (packageId == APP_PACKAGE_ID) {
5860        // No lookup needs to be done, app package IDs are absolute.
5861        return NO_ERROR;
5862    }
5863
5864    if (packageId == 0) {
5865        // The package ID is 0x00. That means that a shared library is accessing
5866        // its own local resource, so we fix up the resource with the calling
5867        // package ID.
5868        *resId |= ((uint32_t) mAssignedPackageId) << 24;
5869        return NO_ERROR;
5870    }
5871
5872    // Do a proper lookup.
5873    uint8_t translatedId = mLookupTable[packageId];
5874    if (translatedId == 0) {
5875        ALOGE("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
5876                (uint8_t)mAssignedPackageId, (uint8_t)packageId);
5877        for (size_t i = 0; i < 256; i++) {
5878            if (mLookupTable[i] != 0) {
5879                ALOGE("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
5880            }
5881        }
5882        return UNKNOWN_ERROR;
5883    }
5884
5885    *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
5886    return NO_ERROR;
5887}
5888
5889status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
5890    if (value->dataType != Res_value::TYPE_DYNAMIC_REFERENCE) {
5891        return NO_ERROR;
5892    }
5893
5894    status_t err = lookupResourceId(&value->data);
5895    if (err != NO_ERROR) {
5896        return err;
5897    }
5898
5899    value->dataType = Res_value::TYPE_REFERENCE;
5900    return NO_ERROR;
5901}
5902
5903struct IdmapTypeMap {
5904    ssize_t overlayTypeId;
5905    size_t entryOffset;
5906    Vector<uint32_t> entryMap;
5907};
5908
5909status_t ResTable::createIdmap(const ResTable& overlay,
5910        uint32_t targetCrc, uint32_t overlayCrc,
5911        const char* targetPath, const char* overlayPath,
5912        void** outData, size_t* outSize) const
5913{
5914    // see README for details on the format of map
5915    if (mPackageGroups.size() == 0) {
5916        ALOGW("idmap: target package has no package groups, cannot create idmap\n");
5917        return UNKNOWN_ERROR;
5918    }
5919
5920    if (mPackageGroups[0]->packages.size() == 0) {
5921        ALOGW("idmap: target package has no packages in its first package group, "
5922                "cannot create idmap\n");
5923        return UNKNOWN_ERROR;
5924    }
5925
5926    KeyedVector<uint8_t, IdmapTypeMap> map;
5927
5928    // overlaid packages are assumed to contain only one package group
5929    const PackageGroup* pg = mPackageGroups[0];
5930
5931    // starting size is header
5932    *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
5933
5934    // target package id and number of types in map
5935    *outSize += 2 * sizeof(uint16_t);
5936
5937    // overlay packages are assumed to contain only one package group
5938    const String16 overlayPackage(overlay.mPackageGroups[0]->name);
5939
5940    for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
5941        const TypeList& typeList = pg->types[typeIndex];
5942        if (typeList.isEmpty()) {
5943            continue;
5944        }
5945
5946        const Type* typeConfigs = typeList[0];
5947
5948        IdmapTypeMap typeMap;
5949        typeMap.overlayTypeId = -1;
5950        typeMap.entryOffset = 0;
5951
5952        for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
5953            uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
5954            resource_name resName;
5955            if (!this->getResourceName(resID, false, &resName)) {
5956                if (typeMap.entryMap.isEmpty()) {
5957                    typeMap.entryOffset++;
5958                }
5959                continue;
5960            }
5961
5962            const String16 overlayType(resName.type, resName.typeLen);
5963            const String16 overlayName(resName.name, resName.nameLen);
5964            uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
5965                                                              overlayName.size(),
5966                                                              overlayType.string(),
5967                                                              overlayType.size(),
5968                                                              overlayPackage.string(),
5969                                                              overlayPackage.size());
5970            if (overlayResID == 0) {
5971                if (typeMap.entryMap.isEmpty()) {
5972                    typeMap.entryOffset++;
5973                }
5974                continue;
5975            }
5976
5977            if (typeMap.overlayTypeId == -1) {
5978                typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
5979            }
5980
5981            if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
5982                ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
5983                        " but entries should map to resources of type %02x",
5984                        resID, overlayResID, typeMap.overlayTypeId);
5985                return BAD_TYPE;
5986            }
5987
5988            if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
5989                // Resize to accomodate this entry and the 0's in between.
5990                if (typeMap.entryMap.resize((entryIndex - typeMap.entryOffset) + 1) < 0) {
5991                    return NO_MEMORY;
5992                }
5993                typeMap.entryMap.editTop() = Res_GETENTRY(overlayResID);
5994            } else {
5995                typeMap.entryMap.add(Res_GETENTRY(overlayResID));
5996            }
5997        }
5998
5999        if (!typeMap.entryMap.isEmpty()) {
6000            if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
6001                return NO_MEMORY;
6002            }
6003            *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
6004        }
6005    }
6006
6007    if (map.isEmpty()) {
6008        ALOGW("idmap: no resources in overlay package present in base package");
6009        return UNKNOWN_ERROR;
6010    }
6011
6012    if ((*outData = malloc(*outSize)) == NULL) {
6013        return NO_MEMORY;
6014    }
6015
6016    uint32_t* data = (uint32_t*)*outData;
6017    *data++ = htodl(IDMAP_MAGIC);
6018    *data++ = htodl(IDMAP_CURRENT_VERSION);
6019    *data++ = htodl(targetCrc);
6020    *data++ = htodl(overlayCrc);
6021    const char* paths[] = { targetPath, overlayPath };
6022    for (int j = 0; j < 2; ++j) {
6023        char* p = (char*)data;
6024        const char* path = paths[j];
6025        const size_t I = strlen(path);
6026        if (I > 255) {
6027            ALOGV("path exceeds expected 255 characters: %s\n", path);
6028            return UNKNOWN_ERROR;
6029        }
6030        for (size_t i = 0; i < 256; ++i) {
6031            *p++ = i < I ? path[i] : '\0';
6032        }
6033        data += 256 / sizeof(uint32_t);
6034    }
6035    const size_t mapSize = map.size();
6036    uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
6037    *typeData++ = htods(pg->id);
6038    *typeData++ = htods(mapSize);
6039    for (size_t i = 0; i < mapSize; ++i) {
6040        uint8_t targetTypeId = map.keyAt(i);
6041        const IdmapTypeMap& typeMap = map[i];
6042        *typeData++ = htods(targetTypeId + 1);
6043        *typeData++ = htods(typeMap.overlayTypeId);
6044        *typeData++ = htods(typeMap.entryMap.size());
6045        *typeData++ = htods(typeMap.entryOffset);
6046
6047        const size_t entryCount = typeMap.entryMap.size();
6048        uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
6049        for (size_t j = 0; j < entryCount; j++) {
6050            entries[j] = htodl(typeMap.entryMap[j]);
6051        }
6052        typeData += entryCount * 2;
6053    }
6054
6055    return NO_ERROR;
6056}
6057
6058bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
6059                            uint32_t* pVersion,
6060                            uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
6061                            String8* pTargetPath, String8* pOverlayPath)
6062{
6063    const uint32_t* map = (const uint32_t*)idmap;
6064    if (!assertIdmapHeader(map, sizeBytes)) {
6065        return false;
6066    }
6067    if (pVersion) {
6068        *pVersion = dtohl(map[1]);
6069    }
6070    if (pTargetCrc) {
6071        *pTargetCrc = dtohl(map[2]);
6072    }
6073    if (pOverlayCrc) {
6074        *pOverlayCrc = dtohl(map[3]);
6075    }
6076    if (pTargetPath) {
6077        pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
6078    }
6079    if (pOverlayPath) {
6080        pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
6081    }
6082    return true;
6083}
6084
6085
6086#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
6087
6088#define CHAR16_ARRAY_EQ(constant, var, len) \
6089        ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
6090
6091static void print_complex(uint32_t complex, bool isFraction)
6092{
6093    const float MANTISSA_MULT =
6094        1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
6095    const float RADIX_MULTS[] = {
6096        1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
6097        1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
6098    };
6099
6100    float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
6101                   <<Res_value::COMPLEX_MANTISSA_SHIFT))
6102            * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
6103                            & Res_value::COMPLEX_RADIX_MASK];
6104    printf("%f", value);
6105
6106    if (!isFraction) {
6107        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6108            case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
6109            case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
6110            case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
6111            case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
6112            case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
6113            case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
6114            default: printf(" (unknown unit)"); break;
6115        }
6116    } else {
6117        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6118            case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
6119            case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
6120            default: printf(" (unknown unit)"); break;
6121        }
6122    }
6123}
6124
6125// Normalize a string for output
6126String8 ResTable::normalizeForOutput( const char *input )
6127{
6128    String8 ret;
6129    char buff[2];
6130    buff[1] = '\0';
6131
6132    while (*input != '\0') {
6133        switch (*input) {
6134            // All interesting characters are in the ASCII zone, so we are making our own lives
6135            // easier by scanning the string one byte at a time.
6136        case '\\':
6137            ret += "\\\\";
6138            break;
6139        case '\n':
6140            ret += "\\n";
6141            break;
6142        case '"':
6143            ret += "\\\"";
6144            break;
6145        default:
6146            buff[0] = *input;
6147            ret += buff;
6148            break;
6149        }
6150
6151        input++;
6152    }
6153
6154    return ret;
6155}
6156
6157void ResTable::print_value(const Package* pkg, const Res_value& value) const
6158{
6159    if (value.dataType == Res_value::TYPE_NULL) {
6160        printf("(null)\n");
6161    } else if (value.dataType == Res_value::TYPE_REFERENCE) {
6162        printf("(reference) 0x%08x\n", value.data);
6163    } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
6164        printf("(dynamic reference) 0x%08x\n", value.data);
6165    } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
6166        printf("(attribute) 0x%08x\n", value.data);
6167    } else if (value.dataType == Res_value::TYPE_STRING) {
6168        size_t len;
6169        const char* str8 = pkg->header->values.string8At(
6170                value.data, &len);
6171        if (str8 != NULL) {
6172            printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
6173        } else {
6174            const char16_t* str16 = pkg->header->values.stringAt(
6175                    value.data, &len);
6176            if (str16 != NULL) {
6177                printf("(string16) \"%s\"\n",
6178                    normalizeForOutput(String8(str16, len).string()).string());
6179            } else {
6180                printf("(string) null\n");
6181            }
6182        }
6183    } else if (value.dataType == Res_value::TYPE_FLOAT) {
6184        printf("(float) %g\n", *(const float*)&value.data);
6185    } else if (value.dataType == Res_value::TYPE_DIMENSION) {
6186        printf("(dimension) ");
6187        print_complex(value.data, false);
6188        printf("\n");
6189    } else if (value.dataType == Res_value::TYPE_FRACTION) {
6190        printf("(fraction) ");
6191        print_complex(value.data, true);
6192        printf("\n");
6193    } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
6194            || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
6195        printf("(color) #%08x\n", value.data);
6196    } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
6197        printf("(boolean) %s\n", value.data ? "true" : "false");
6198    } else if (value.dataType >= Res_value::TYPE_FIRST_INT
6199            || value.dataType <= Res_value::TYPE_LAST_INT) {
6200        printf("(int) 0x%08x or %d\n", value.data, value.data);
6201    } else {
6202        printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
6203               (int)value.dataType, (int)value.data,
6204               (int)value.size, (int)value.res0);
6205    }
6206}
6207
6208void ResTable::print(bool inclValues) const
6209{
6210    if (mError != 0) {
6211        printf("mError=0x%x (%s)\n", mError, strerror(mError));
6212    }
6213    size_t pgCount = mPackageGroups.size();
6214    printf("Package Groups (%d)\n", (int)pgCount);
6215    for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
6216        const PackageGroup* pg = mPackageGroups[pgIndex];
6217        printf("Package Group %d id=%d packageCount=%d name=%s\n",
6218                (int)pgIndex, pg->id, (int)pg->packages.size(),
6219                String8(pg->name).string());
6220
6221        for (size_t typeIndex=0; typeIndex < pg->types.size(); typeIndex++) {
6222            const TypeList& typeList = pg->types[typeIndex];
6223            if (typeList.isEmpty()) {
6224                //printf("    type %d NULL\n", (int)typeIndex);
6225                continue;
6226            }
6227            const Type* typeConfigs = typeList[0];
6228            const size_t NTC = typeConfigs->configs.size();
6229            printf("    type %d configCount=%d entryCount=%d\n",
6230                   (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
6231            if (typeConfigs->typeSpecFlags != NULL) {
6232                for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
6233                    uint32_t resID = (0xff000000 & ((pg->id)<<24))
6234                                | (0x00ff0000 & ((typeIndex+1)<<16))
6235                                | (0x0000ffff & (entryIndex));
6236                    // Since we are creating resID without actually
6237                    // iterating over them, we have no idea which is a
6238                    // dynamic reference. We must check.
6239                    pg->dynamicRefTable.lookupResourceId(&resID);
6240
6241                    resource_name resName;
6242                    if (this->getResourceName(resID, true, &resName)) {
6243                        String8 type8;
6244                        String8 name8;
6245                        if (resName.type8 != NULL) {
6246                            type8 = String8(resName.type8, resName.typeLen);
6247                        } else {
6248                            type8 = String8(resName.type, resName.typeLen);
6249                        }
6250                        if (resName.name8 != NULL) {
6251                            name8 = String8(resName.name8, resName.nameLen);
6252                        } else {
6253                            name8 = String8(resName.name, resName.nameLen);
6254                        }
6255                        printf("      spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
6256                            resID,
6257                            CHAR16_TO_CSTR(resName.package, resName.packageLen),
6258                            type8.string(), name8.string(),
6259                            dtohl(typeConfigs->typeSpecFlags[entryIndex]));
6260                    } else {
6261                        printf("      INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
6262                    }
6263                }
6264            }
6265            for (size_t configIndex=0; configIndex<NTC; configIndex++) {
6266                const ResTable_type* type = typeConfigs->configs[configIndex];
6267                if ((((uint64_t)type)&0x3) != 0) {
6268                    printf("      NON-INTEGER ResTable_type ADDRESS: %p\n", type);
6269                    continue;
6270                }
6271                String8 configStr = type->config.toString();
6272                printf("      config %s:\n", configStr.size() > 0
6273                        ? configStr.string() : "(default)");
6274                size_t entryCount = dtohl(type->entryCount);
6275                uint32_t entriesStart = dtohl(type->entriesStart);
6276                if ((entriesStart&0x3) != 0) {
6277                    printf("      NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n", entriesStart);
6278                    continue;
6279                }
6280                uint32_t typeSize = dtohl(type->header.size);
6281                if ((typeSize&0x3) != 0) {
6282                    printf("      NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
6283                    continue;
6284                }
6285                for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
6286
6287                    const uint8_t* const end = ((const uint8_t*)type)
6288                        + dtohl(type->header.size);
6289                    const uint32_t* const eindex = (const uint32_t*)
6290                        (((const uint8_t*)type) + dtohs(type->header.headerSize));
6291
6292                    uint32_t thisOffset = dtohl(eindex[entryIndex]);
6293                    if (thisOffset == ResTable_type::NO_ENTRY) {
6294                        continue;
6295                    }
6296
6297                    uint32_t resID = (0xff000000 & ((pg->id)<<24))
6298                                | (0x00ff0000 & ((typeIndex+1)<<16))
6299                                | (0x0000ffff & (entryIndex));
6300                    pg->dynamicRefTable.lookupResourceId(&resID);
6301                    resource_name resName;
6302                    if (this->getResourceName(resID, true, &resName)) {
6303                        String8 type8;
6304                        String8 name8;
6305                        if (resName.type8 != NULL) {
6306                            type8 = String8(resName.type8, resName.typeLen);
6307                        } else {
6308                            type8 = String8(resName.type, resName.typeLen);
6309                        }
6310                        if (resName.name8 != NULL) {
6311                            name8 = String8(resName.name8, resName.nameLen);
6312                        } else {
6313                            name8 = String8(resName.name, resName.nameLen);
6314                        }
6315                        printf("        resource 0x%08x %s:%s/%s: ", resID,
6316                                CHAR16_TO_CSTR(resName.package, resName.packageLen),
6317                                type8.string(), name8.string());
6318                    } else {
6319                        printf("        INVALID RESOURCE 0x%08x: ", resID);
6320                    }
6321                    if ((thisOffset&0x3) != 0) {
6322                        printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
6323                        continue;
6324                    }
6325                    if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
6326                        printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
6327                               entriesStart, thisOffset, typeSize);
6328                        continue;
6329                    }
6330
6331                    const ResTable_entry* ent = (const ResTable_entry*)
6332                        (((const uint8_t*)type) + entriesStart + thisOffset);
6333                    if (((entriesStart + thisOffset)&0x3) != 0) {
6334                        printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
6335                             (entriesStart + thisOffset));
6336                        continue;
6337                    }
6338
6339                    uintptr_t esize = dtohs(ent->size);
6340                    if ((esize&0x3) != 0) {
6341                        printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
6342                        continue;
6343                    }
6344                    if ((thisOffset+esize) > typeSize) {
6345                        printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
6346                               entriesStart, thisOffset, (void *)esize, typeSize);
6347                        continue;
6348                    }
6349
6350                    const Res_value* valuePtr = NULL;
6351                    const ResTable_map_entry* bagPtr = NULL;
6352                    Res_value value;
6353                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
6354                        printf("<bag>");
6355                        bagPtr = (const ResTable_map_entry*)ent;
6356                    } else {
6357                        valuePtr = (const Res_value*)
6358                            (((const uint8_t*)ent) + esize);
6359                        value.copyFrom_dtoh(*valuePtr);
6360                        printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
6361                               (int)value.dataType, (int)value.data,
6362                               (int)value.size, (int)value.res0);
6363                    }
6364
6365                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
6366                        printf(" (PUBLIC)");
6367                    }
6368                    printf("\n");
6369
6370                    if (inclValues) {
6371                        if (valuePtr != NULL) {
6372                            printf("          ");
6373                            print_value(typeConfigs->package, value);
6374                        } else if (bagPtr != NULL) {
6375                            const int N = dtohl(bagPtr->count);
6376                            const uint8_t* baseMapPtr = (const uint8_t*)ent;
6377                            size_t mapOffset = esize;
6378                            const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6379                            const uint32_t parent = dtohl(bagPtr->parent.ident);
6380                            uint32_t resolvedParent = parent;
6381                            status_t err = pg->dynamicRefTable.lookupResourceId(&resolvedParent);
6382                            if (err != NO_ERROR) {
6383                                resolvedParent = 0;
6384                            }
6385                            printf("          Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
6386                                    parent, resolvedParent, N);
6387                            for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
6388                                printf("          #%i (Key=0x%08x): ",
6389                                    i, dtohl(mapPtr->name.ident));
6390                                value.copyFrom_dtoh(mapPtr->value);
6391                                print_value(typeConfigs->package, value);
6392                                const size_t size = dtohs(mapPtr->value.size);
6393                                mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
6394                                mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6395                            }
6396                        }
6397                    }
6398                }
6399            }
6400        }
6401    }
6402}
6403
6404}   // namespace android
6405