ResourceTypes.cpp revision e819d01e3e120844e95cc4c534382d20d2beb623 
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 <ctype.h>
21#include <memory.h>
22#include <stddef.h>
23#include <stdint.h>
24#include <stdlib.h>
25#include <string.h>
26
27#include <limits>
28#include <type_traits>
29
30#include <androidfw/ByteBucketArray.h>
31#include <androidfw/ResourceTypes.h>
32#include <androidfw/TypeWrappers.h>
33#include <utils/Atomic.h>
34#include <utils/ByteOrder.h>
35#include <utils/Debug.h>
36#include <utils/Log.h>
37#include <utils/String16.h>
38#include <utils/String8.h>
39
40#ifdef __ANDROID__
41#include <binder/TextOutput.h>
42#endif
43
44#ifndef INT32_MAX
45#define INT32_MAX ((int32_t)(2147483647))
46#endif
47
48namespace android {
49
50#if defined(_WIN32)
51#undef  nhtol
52#undef  htonl
53#define ntohl(x)    ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
54#define htonl(x)    ntohl(x)
55#define ntohs(x)    ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
56#define htons(x)    ntohs(x)
57#endif
58
59#define IDMAP_MAGIC             0x504D4449
60#define IDMAP_CURRENT_VERSION   0x00000001
61
62#define APP_PACKAGE_ID      0x7f
63#define SYS_PACKAGE_ID      0x01
64
65static const bool kDebugStringPoolNoisy = false;
66static const bool kDebugXMLNoisy = false;
67static const bool kDebugTableNoisy = false;
68static const bool kDebugTableGetEntry = false;
69static const bool kDebugTableSuperNoisy = false;
70static const bool kDebugLoadTableNoisy = false;
71static const bool kDebugLoadTableSuperNoisy = false;
72static const bool kDebugTableTheme = false;
73static const bool kDebugResXMLTree = false;
74static const bool kDebugLibNoisy = false;
75
76// TODO: This code uses 0xFFFFFFFF converted to bag_set* as a sentinel value. This is bad practice.
77
78// Standard C isspace() is only required to look at the low byte of its input, so
79// produces incorrect results for UTF-16 characters.  For safety's sake, assume that
80// any high-byte UTF-16 code point is not whitespace.
81inline int isspace16(char16_t c) {
82    return (c < 0x0080 && isspace(c));
83}
84
85template<typename T>
86inline static T max(T a, T b) {
87    return a > b ? a : b;
88}
89
90// range checked; guaranteed to NUL-terminate within the stated number of available slots
91// NOTE: if this truncates the dst string due to running out of space, no attempt is
92// made to avoid splitting surrogate pairs.
93static void strcpy16_dtoh(char16_t* dst, const uint16_t* src, size_t avail)
94{
95    char16_t* last = dst + avail - 1;
96    while (*src && (dst < last)) {
97        char16_t s = dtohs(static_cast<char16_t>(*src));
98        *dst++ = s;
99        src++;
100    }
101    *dst = 0;
102}
103
104static status_t validate_chunk(const ResChunk_header* chunk,
105                               size_t minSize,
106                               const uint8_t* dataEnd,
107                               const char* name)
108{
109    const uint16_t headerSize = dtohs(chunk->headerSize);
110    const uint32_t size = dtohl(chunk->size);
111
112    if (headerSize >= minSize) {
113        if (headerSize <= size) {
114            if (((headerSize|size)&0x3) == 0) {
115                if ((size_t)size <= (size_t)(dataEnd-((const uint8_t*)chunk))) {
116                    return NO_ERROR;
117                }
118                ALOGW("%s data size 0x%x extends beyond resource end %p.",
119                     name, size, (void*)(dataEnd-((const uint8_t*)chunk)));
120                return BAD_TYPE;
121            }
122            ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
123                 name, (int)size, (int)headerSize);
124            return BAD_TYPE;
125        }
126        ALOGW("%s size 0x%x is smaller than header size 0x%x.",
127             name, size, headerSize);
128        return BAD_TYPE;
129    }
130    ALOGW("%s header size 0x%04x is too small.",
131         name, headerSize);
132    return BAD_TYPE;
133}
134
135static void fill9patchOffsets(Res_png_9patch* patch) {
136    patch->xDivsOffset = sizeof(Res_png_9patch);
137    patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
138    patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
139}
140
141inline void Res_value::copyFrom_dtoh(const Res_value& src)
142{
143    size = dtohs(src.size);
144    res0 = src.res0;
145    dataType = src.dataType;
146    data = dtohl(src.data);
147}
148
149void Res_png_9patch::deviceToFile()
150{
151    int32_t* xDivs = getXDivs();
152    for (int i = 0; i < numXDivs; i++) {
153        xDivs[i] = htonl(xDivs[i]);
154    }
155    int32_t* yDivs = getYDivs();
156    for (int i = 0; i < numYDivs; i++) {
157        yDivs[i] = htonl(yDivs[i]);
158    }
159    paddingLeft = htonl(paddingLeft);
160    paddingRight = htonl(paddingRight);
161    paddingTop = htonl(paddingTop);
162    paddingBottom = htonl(paddingBottom);
163    uint32_t* colors = getColors();
164    for (int i=0; i<numColors; i++) {
165        colors[i] = htonl(colors[i]);
166    }
167}
168
169void Res_png_9patch::fileToDevice()
170{
171    int32_t* xDivs = getXDivs();
172    for (int i = 0; i < numXDivs; i++) {
173        xDivs[i] = ntohl(xDivs[i]);
174    }
175    int32_t* yDivs = getYDivs();
176    for (int i = 0; i < numYDivs; i++) {
177        yDivs[i] = ntohl(yDivs[i]);
178    }
179    paddingLeft = ntohl(paddingLeft);
180    paddingRight = ntohl(paddingRight);
181    paddingTop = ntohl(paddingTop);
182    paddingBottom = ntohl(paddingBottom);
183    uint32_t* colors = getColors();
184    for (int i=0; i<numColors; i++) {
185        colors[i] = ntohl(colors[i]);
186    }
187}
188
189size_t Res_png_9patch::serializedSize() const
190{
191    // The size of this struct is 32 bytes on the 32-bit target system
192    // 4 * int8_t
193    // 4 * int32_t
194    // 3 * uint32_t
195    return 32
196            + numXDivs * sizeof(int32_t)
197            + numYDivs * sizeof(int32_t)
198            + numColors * sizeof(uint32_t);
199}
200
201void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
202                                const int32_t* yDivs, const uint32_t* colors)
203{
204    // Use calloc since we're going to leave a few holes in the data
205    // and want this to run cleanly under valgrind
206    void* newData = calloc(1, patch.serializedSize());
207    serialize(patch, xDivs, yDivs, colors, newData);
208    return newData;
209}
210
211void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
212                               const int32_t* yDivs, const uint32_t* colors, void* outData)
213{
214    uint8_t* data = (uint8_t*) outData;
215    memcpy(data, &patch.wasDeserialized, 4);     // copy  wasDeserialized, numXDivs, numYDivs, numColors
216    memcpy(data + 12, &patch.paddingLeft, 16);   // copy paddingXXXX
217    data += 32;
218
219    memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
220    data +=  patch.numXDivs * sizeof(int32_t);
221    memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
222    data +=  patch.numYDivs * sizeof(int32_t);
223    memcpy(data, colors, patch.numColors * sizeof(uint32_t));
224
225    fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
226}
227
228static bool assertIdmapHeader(const void* idmap, size_t size) {
229    if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
230        ALOGE("idmap: header is not word aligned");
231        return false;
232    }
233
234    if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
235        ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
236        return false;
237    }
238
239    const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
240    if (magic != IDMAP_MAGIC) {
241        ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
242             magic, IDMAP_MAGIC);
243        return false;
244    }
245
246    const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
247    if (version != IDMAP_CURRENT_VERSION) {
248        // We are strict about versions because files with this format are
249        // auto-generated and don't need backwards compatibility.
250        ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
251                version, IDMAP_CURRENT_VERSION);
252        return false;
253    }
254    return true;
255}
256
257class IdmapEntries {
258public:
259    IdmapEntries() : mData(NULL) {}
260
261    bool hasEntries() const {
262        if (mData == NULL) {
263            return false;
264        }
265
266        return (dtohs(*mData) > 0);
267    }
268
269    size_t byteSize() const {
270        if (mData == NULL) {
271            return 0;
272        }
273        uint16_t entryCount = dtohs(mData[2]);
274        return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
275    }
276
277    uint8_t targetTypeId() const {
278        if (mData == NULL) {
279            return 0;
280        }
281        return dtohs(mData[0]);
282    }
283
284    uint8_t overlayTypeId() const {
285        if (mData == NULL) {
286            return 0;
287        }
288        return dtohs(mData[1]);
289    }
290
291    status_t setTo(const void* entryHeader, size_t size) {
292        if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
293            ALOGE("idmap: entry header is not word aligned");
294            return UNKNOWN_ERROR;
295        }
296
297        if (size < sizeof(uint16_t) * 4) {
298            ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
299            return UNKNOWN_ERROR;
300        }
301
302        const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
303        const uint16_t targetTypeId = dtohs(header[0]);
304        const uint16_t overlayTypeId = dtohs(header[1]);
305        if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
306            ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
307            return UNKNOWN_ERROR;
308        }
309
310        uint16_t entryCount = dtohs(header[2]);
311        if (size < sizeof(uint32_t) * (entryCount + 2)) {
312            ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
313                    (uint32_t) size, (uint32_t) entryCount);
314            return UNKNOWN_ERROR;
315        }
316        mData = header;
317        return NO_ERROR;
318    }
319
320    status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
321        uint16_t entryCount = dtohs(mData[2]);
322        uint16_t offset = dtohs(mData[3]);
323
324        if (entryId < offset) {
325            // The entry is not present in this idmap
326            return BAD_INDEX;
327        }
328
329        entryId -= offset;
330
331        if (entryId >= entryCount) {
332            // The entry is not present in this idmap
333            return BAD_INDEX;
334        }
335
336        // It is safe to access the type here without checking the size because
337        // we have checked this when it was first loaded.
338        const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
339        uint32_t mappedEntry = dtohl(entries[entryId]);
340        if (mappedEntry == 0xffffffff) {
341            // This entry is not present in this idmap
342            return BAD_INDEX;
343        }
344        *outEntryId = static_cast<uint16_t>(mappedEntry);
345        return NO_ERROR;
346    }
347
348private:
349    const uint16_t* mData;
350};
351
352status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
353    if (!assertIdmapHeader(idmap, size)) {
354        return UNKNOWN_ERROR;
355    }
356
357    size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
358    if (size < sizeof(uint16_t) * 2) {
359        ALOGE("idmap: too small to contain any mapping");
360        return UNKNOWN_ERROR;
361    }
362
363    const uint16_t* data = reinterpret_cast<const uint16_t*>(
364            reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
365
366    uint16_t targetPackageId = dtohs(*(data++));
367    if (targetPackageId == 0 || targetPackageId > 255) {
368        ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
369        return UNKNOWN_ERROR;
370    }
371
372    uint16_t mapCount = dtohs(*(data++));
373    if (mapCount == 0) {
374        ALOGE("idmap: no mappings");
375        return UNKNOWN_ERROR;
376    }
377
378    if (mapCount > 255) {
379        ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
380    }
381
382    while (size > sizeof(uint16_t) * 4) {
383        IdmapEntries entries;
384        status_t err = entries.setTo(data, size);
385        if (err != NO_ERROR) {
386            return err;
387        }
388
389        ssize_t index = outMap->add(entries.overlayTypeId(), entries);
390        if (index < 0) {
391            return NO_MEMORY;
392        }
393
394        data += entries.byteSize() / sizeof(uint16_t);
395        size -= entries.byteSize();
396    }
397
398    if (outPackageId != NULL) {
399        *outPackageId = static_cast<uint8_t>(targetPackageId);
400    }
401    return NO_ERROR;
402}
403
404Res_png_9patch* Res_png_9patch::deserialize(void* inData)
405{
406
407    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
408    patch->wasDeserialized = true;
409    fill9patchOffsets(patch);
410
411    return patch;
412}
413
414// --------------------------------------------------------------------
415// --------------------------------------------------------------------
416// --------------------------------------------------------------------
417
418ResStringPool::ResStringPool()
419    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
420{
421}
422
423ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
424    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
425{
426    setTo(data, size, copyData);
427}
428
429ResStringPool::~ResStringPool()
430{
431    uninit();
432}
433
434void ResStringPool::setToEmpty()
435{
436    uninit();
437
438    mOwnedData = calloc(1, sizeof(ResStringPool_header));
439    ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
440    mSize = 0;
441    mEntries = NULL;
442    mStrings = NULL;
443    mStringPoolSize = 0;
444    mEntryStyles = NULL;
445    mStyles = NULL;
446    mStylePoolSize = 0;
447    mHeader = (const ResStringPool_header*) header;
448}
449
450status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
451{
452    if (!data || !size) {
453        return (mError=BAD_TYPE);
454    }
455
456    uninit();
457
458    const bool notDeviceEndian = htods(0xf0) != 0xf0;
459
460    if (copyData || notDeviceEndian) {
461        mOwnedData = malloc(size);
462        if (mOwnedData == NULL) {
463            return (mError=NO_MEMORY);
464        }
465        memcpy(mOwnedData, data, size);
466        data = mOwnedData;
467    }
468
469    mHeader = (const ResStringPool_header*)data;
470
471    if (notDeviceEndian) {
472        ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
473        h->header.headerSize = dtohs(mHeader->header.headerSize);
474        h->header.type = dtohs(mHeader->header.type);
475        h->header.size = dtohl(mHeader->header.size);
476        h->stringCount = dtohl(mHeader->stringCount);
477        h->styleCount = dtohl(mHeader->styleCount);
478        h->flags = dtohl(mHeader->flags);
479        h->stringsStart = dtohl(mHeader->stringsStart);
480        h->stylesStart = dtohl(mHeader->stylesStart);
481    }
482
483    if (mHeader->header.headerSize > mHeader->header.size
484            || mHeader->header.size > size) {
485        ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
486                (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
487        return (mError=BAD_TYPE);
488    }
489    mSize = mHeader->header.size;
490    mEntries = (const uint32_t*)
491        (((const uint8_t*)data)+mHeader->header.headerSize);
492
493    if (mHeader->stringCount > 0) {
494        if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount)  // uint32 overflow?
495            || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
496                > size) {
497            ALOGW("Bad string block: entry of %d items extends past data size %d\n",
498                    (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
499                    (int)size);
500            return (mError=BAD_TYPE);
501        }
502
503        size_t charSize;
504        if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
505            charSize = sizeof(uint8_t);
506        } else {
507            charSize = sizeof(uint16_t);
508        }
509
510        // There should be at least space for the smallest string
511        // (2 bytes length, null terminator).
512        if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
513            ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
514                    (int)mHeader->stringsStart, (int)mHeader->header.size);
515            return (mError=BAD_TYPE);
516        }
517
518        mStrings = (const void*)
519            (((const uint8_t*)data) + mHeader->stringsStart);
520
521        if (mHeader->styleCount == 0) {
522            mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
523        } else {
524            // check invariant: styles starts before end of data
525            if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
526                ALOGW("Bad style block: style block starts at %d past data size of %d\n",
527                    (int)mHeader->stylesStart, (int)mHeader->header.size);
528                return (mError=BAD_TYPE);
529            }
530            // check invariant: styles follow the strings
531            if (mHeader->stylesStart <= mHeader->stringsStart) {
532                ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
533                    (int)mHeader->stylesStart, (int)mHeader->stringsStart);
534                return (mError=BAD_TYPE);
535            }
536            mStringPoolSize =
537                (mHeader->stylesStart-mHeader->stringsStart)/charSize;
538        }
539
540        // check invariant: stringCount > 0 requires a string pool to exist
541        if (mStringPoolSize == 0) {
542            ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
543            return (mError=BAD_TYPE);
544        }
545
546        if (notDeviceEndian) {
547            size_t i;
548            uint32_t* e = const_cast<uint32_t*>(mEntries);
549            for (i=0; i<mHeader->stringCount; i++) {
550                e[i] = dtohl(mEntries[i]);
551            }
552            if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
553                const uint16_t* strings = (const uint16_t*)mStrings;
554                uint16_t* s = const_cast<uint16_t*>(strings);
555                for (i=0; i<mStringPoolSize; i++) {
556                    s[i] = dtohs(strings[i]);
557                }
558            }
559        }
560
561        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
562                ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
563                (!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
564                ((uint16_t*)mStrings)[mStringPoolSize-1] != 0)) {
565            ALOGW("Bad string block: last string is not 0-terminated\n");
566            return (mError=BAD_TYPE);
567        }
568    } else {
569        mStrings = NULL;
570        mStringPoolSize = 0;
571    }
572
573    if (mHeader->styleCount > 0) {
574        mEntryStyles = mEntries + mHeader->stringCount;
575        // invariant: integer overflow in calculating mEntryStyles
576        if (mEntryStyles < mEntries) {
577            ALOGW("Bad string block: integer overflow finding styles\n");
578            return (mError=BAD_TYPE);
579        }
580
581        if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
582            ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
583                    (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
584                    (int)size);
585            return (mError=BAD_TYPE);
586        }
587        mStyles = (const uint32_t*)
588            (((const uint8_t*)data)+mHeader->stylesStart);
589        if (mHeader->stylesStart >= mHeader->header.size) {
590            ALOGW("Bad string block: style pool starts %d, after total size %d\n",
591                    (int)mHeader->stylesStart, (int)mHeader->header.size);
592            return (mError=BAD_TYPE);
593        }
594        mStylePoolSize =
595            (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
596
597        if (notDeviceEndian) {
598            size_t i;
599            uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
600            for (i=0; i<mHeader->styleCount; i++) {
601                e[i] = dtohl(mEntryStyles[i]);
602            }
603            uint32_t* s = const_cast<uint32_t*>(mStyles);
604            for (i=0; i<mStylePoolSize; i++) {
605                s[i] = dtohl(mStyles[i]);
606            }
607        }
608
609        const ResStringPool_span endSpan = {
610            { htodl(ResStringPool_span::END) },
611            htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
612        };
613        if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
614                   &endSpan, sizeof(endSpan)) != 0) {
615            ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
616            return (mError=BAD_TYPE);
617        }
618    } else {
619        mEntryStyles = NULL;
620        mStyles = NULL;
621        mStylePoolSize = 0;
622    }
623
624    return (mError=NO_ERROR);
625}
626
627status_t ResStringPool::getError() const
628{
629    return mError;
630}
631
632void ResStringPool::uninit()
633{
634    mError = NO_INIT;
635    if (mHeader != NULL && mCache != NULL) {
636        for (size_t x = 0; x < mHeader->stringCount; x++) {
637            if (mCache[x] != NULL) {
638                free(mCache[x]);
639                mCache[x] = NULL;
640            }
641        }
642        free(mCache);
643        mCache = NULL;
644    }
645    if (mOwnedData) {
646        free(mOwnedData);
647        mOwnedData = NULL;
648    }
649}
650
651/**
652 * Strings in UTF-16 format have length indicated by a length encoded in the
653 * stored data. It is either 1 or 2 characters of length data. This allows a
654 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
655 * much data in a string, you're abusing them.
656 *
657 * If the high bit is set, then there are two characters or 4 bytes of length
658 * data encoded. In that case, drop the high bit of the first character and
659 * add it together with the next character.
660 */
661static inline size_t
662decodeLength(const uint16_t** str)
663{
664    size_t len = **str;
665    if ((len & 0x8000) != 0) {
666        (*str)++;
667        len = ((len & 0x7FFF) << 16) | **str;
668    }
669    (*str)++;
670    return len;
671}
672
673/**
674 * Strings in UTF-8 format have length indicated by a length encoded in the
675 * stored data. It is either 1 or 2 characters of length data. This allows a
676 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
677 * text in another way if you're using that much data in a single string.
678 *
679 * If the high bit is set, then there are two characters or 2 bytes of length
680 * data encoded. In that case, drop the high bit of the first character and
681 * add it together with the next character.
682 */
683static inline size_t
684decodeLength(const uint8_t** str)
685{
686    size_t len = **str;
687    if ((len & 0x80) != 0) {
688        (*str)++;
689        len = ((len & 0x7F) << 8) | **str;
690    }
691    (*str)++;
692    return len;
693}
694
695const char16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
696{
697    if (mError == NO_ERROR && idx < mHeader->stringCount) {
698        const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
699        const uint32_t off = mEntries[idx]/(isUTF8?sizeof(uint8_t):sizeof(uint16_t));
700        if (off < (mStringPoolSize-1)) {
701            if (!isUTF8) {
702                const uint16_t* strings = (uint16_t*)mStrings;
703                const uint16_t* str = strings+off;
704
705                *u16len = decodeLength(&str);
706                if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
707                    // Reject malformed (non null-terminated) strings
708                    if (str[*u16len] != 0x0000) {
709                        ALOGW("Bad string block: string #%d is not null-terminated",
710                              (int)idx);
711                        return NULL;
712                    }
713                    return reinterpret_cast<const char16_t*>(str);
714                } else {
715                    ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
716                            (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
717                }
718            } else {
719                const uint8_t* strings = (uint8_t*)mStrings;
720                const uint8_t* u8str = strings+off;
721
722                *u16len = decodeLength(&u8str);
723                size_t u8len = decodeLength(&u8str);
724
725                // encLen must be less than 0x7FFF due to encoding.
726                if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
727                    AutoMutex lock(mDecodeLock);
728
729                    if (mCache == NULL) {
730#ifndef __ANDROID__
731                        if (kDebugStringPoolNoisy) {
732                            ALOGI("CREATING STRING CACHE OF %zu bytes",
733                                    mHeader->stringCount*sizeof(char16_t**));
734                        }
735#else
736                        // We do not want to be in this case when actually running Android.
737                        ALOGW("CREATING STRING CACHE OF %zu bytes",
738                                static_cast<size_t>(mHeader->stringCount*sizeof(char16_t**)));
739#endif
740                        mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
741                        if (mCache == NULL) {
742                            ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
743                                    (int)(mHeader->stringCount*sizeof(char16_t**)));
744                            return NULL;
745                        }
746                    }
747
748                    if (mCache[idx] != NULL) {
749                        return mCache[idx];
750                    }
751
752                    ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
753                    if (actualLen < 0 || (size_t)actualLen != *u16len) {
754                        ALOGW("Bad string block: string #%lld decoded length is not correct "
755                                "%lld vs %llu\n",
756                                (long long)idx, (long long)actualLen, (long long)*u16len);
757                        return NULL;
758                    }
759
760                    // Reject malformed (non null-terminated) strings
761                    if (u8str[u8len] != 0x00) {
762                        ALOGW("Bad string block: string #%d is not null-terminated",
763                              (int)idx);
764                        return NULL;
765                    }
766
767                    char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
768                    if (!u16str) {
769                        ALOGW("No memory when trying to allocate decode cache for string #%d\n",
770                                (int)idx);
771                        return NULL;
772                    }
773
774                    if (kDebugStringPoolNoisy) {
775                        ALOGI("Caching UTF8 string: %s", u8str);
776                    }
777                    utf8_to_utf16(u8str, u8len, u16str);
778                    mCache[idx] = u16str;
779                    return u16str;
780                } else {
781                    ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
782                            (long long)idx, (long long)(u8str+u8len-strings),
783                            (long long)mStringPoolSize);
784                }
785            }
786        } else {
787            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
788                    (int)idx, (int)(off*sizeof(uint16_t)),
789                    (int)(mStringPoolSize*sizeof(uint16_t)));
790        }
791    }
792    return NULL;
793}
794
795const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
796{
797    if (mError == NO_ERROR && idx < mHeader->stringCount) {
798        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
799            return NULL;
800        }
801        const uint32_t off = mEntries[idx]/sizeof(char);
802        if (off < (mStringPoolSize-1)) {
803            const uint8_t* strings = (uint8_t*)mStrings;
804            const uint8_t* str = strings+off;
805            *outLen = decodeLength(&str);
806            size_t encLen = decodeLength(&str);
807            if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
808                return (const char*)str;
809            } else {
810                ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
811                        (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
812            }
813        } else {
814            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
815                    (int)idx, (int)(off*sizeof(uint16_t)),
816                    (int)(mStringPoolSize*sizeof(uint16_t)));
817        }
818    }
819    return NULL;
820}
821
822const String8 ResStringPool::string8ObjectAt(size_t idx) const
823{
824    size_t len;
825    const char *str = string8At(idx, &len);
826    if (str != NULL) {
827        return String8(str, len);
828    }
829
830    const char16_t *str16 = stringAt(idx, &len);
831    if (str16 != NULL) {
832        return String8(str16, len);
833    }
834    return String8();
835}
836
837const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
838{
839    return styleAt(ref.index);
840}
841
842const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
843{
844    if (mError == NO_ERROR && idx < mHeader->styleCount) {
845        const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
846        if (off < mStylePoolSize) {
847            return (const ResStringPool_span*)(mStyles+off);
848        } else {
849            ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
850                    (int)idx, (int)(off*sizeof(uint32_t)),
851                    (int)(mStylePoolSize*sizeof(uint32_t)));
852        }
853    }
854    return NULL;
855}
856
857ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
858{
859    if (mError != NO_ERROR) {
860        return mError;
861    }
862
863    size_t len;
864
865    if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
866        if (kDebugStringPoolNoisy) {
867            ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string());
868        }
869
870        // The string pool contains UTF 8 strings; we don't want to cause
871        // temporary UTF-16 strings to be created as we search.
872        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
873            // Do a binary search for the string...  this is a little tricky,
874            // because the strings are sorted with strzcmp16().  So to match
875            // the ordering, we need to convert strings in the pool to UTF-16.
876            // But we don't want to hit the cache, so instead we will have a
877            // local temporary allocation for the conversions.
878            char16_t* convBuffer = (char16_t*)malloc(strLen+4);
879            ssize_t l = 0;
880            ssize_t h = mHeader->stringCount-1;
881
882            ssize_t mid;
883            while (l <= h) {
884                mid = l + (h - l)/2;
885                const uint8_t* s = (const uint8_t*)string8At(mid, &len);
886                int c;
887                if (s != NULL) {
888                    char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
889                    *end = 0;
890                    c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
891                } else {
892                    c = -1;
893                }
894                if (kDebugStringPoolNoisy) {
895                    ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
896                            (const char*)s, c, (int)l, (int)mid, (int)h);
897                }
898                if (c == 0) {
899                    if (kDebugStringPoolNoisy) {
900                        ALOGI("MATCH!");
901                    }
902                    free(convBuffer);
903                    return mid;
904                } else if (c < 0) {
905                    l = mid + 1;
906                } else {
907                    h = mid - 1;
908                }
909            }
910            free(convBuffer);
911        } else {
912            // It is unusual to get the ID from an unsorted string block...
913            // most often this happens because we want to get IDs for style
914            // span tags; since those always appear at the end of the string
915            // block, start searching at the back.
916            String8 str8(str, strLen);
917            const size_t str8Len = str8.size();
918            for (int i=mHeader->stringCount-1; i>=0; i--) {
919                const char* s = string8At(i, &len);
920                if (kDebugStringPoolNoisy) {
921                    ALOGI("Looking at %s, i=%d\n", String8(s).string(), i);
922                }
923                if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
924                    if (kDebugStringPoolNoisy) {
925                        ALOGI("MATCH!");
926                    }
927                    return i;
928                }
929            }
930        }
931
932    } else {
933        if (kDebugStringPoolNoisy) {
934            ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string());
935        }
936
937        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
938            // Do a binary search for the string...
939            ssize_t l = 0;
940            ssize_t h = mHeader->stringCount-1;
941
942            ssize_t mid;
943            while (l <= h) {
944                mid = l + (h - l)/2;
945                const char16_t* s = stringAt(mid, &len);
946                int c = s ? strzcmp16(s, len, str, strLen) : -1;
947                if (kDebugStringPoolNoisy) {
948                    ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
949                            String8(s).string(), c, (int)l, (int)mid, (int)h);
950                }
951                if (c == 0) {
952                    if (kDebugStringPoolNoisy) {
953                        ALOGI("MATCH!");
954                    }
955                    return mid;
956                } else if (c < 0) {
957                    l = mid + 1;
958                } else {
959                    h = mid - 1;
960                }
961            }
962        } else {
963            // It is unusual to get the ID from an unsorted string block...
964            // most often this happens because we want to get IDs for style
965            // span tags; since those always appear at the end of the string
966            // block, start searching at the back.
967            for (int i=mHeader->stringCount-1; i>=0; i--) {
968                const char16_t* s = stringAt(i, &len);
969                if (kDebugStringPoolNoisy) {
970                    ALOGI("Looking at %s, i=%d\n", String8(s).string(), i);
971                }
972                if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
973                    if (kDebugStringPoolNoisy) {
974                        ALOGI("MATCH!");
975                    }
976                    return i;
977                }
978            }
979        }
980    }
981
982    return NAME_NOT_FOUND;
983}
984
985size_t ResStringPool::size() const
986{
987    return (mError == NO_ERROR) ? mHeader->stringCount : 0;
988}
989
990size_t ResStringPool::styleCount() const
991{
992    return (mError == NO_ERROR) ? mHeader->styleCount : 0;
993}
994
995size_t ResStringPool::bytes() const
996{
997    return (mError == NO_ERROR) ? mHeader->header.size : 0;
998}
999
1000bool ResStringPool::isSorted() const
1001{
1002    return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
1003}
1004
1005bool ResStringPool::isUTF8() const
1006{
1007    return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
1008}
1009
1010// --------------------------------------------------------------------
1011// --------------------------------------------------------------------
1012// --------------------------------------------------------------------
1013
1014ResXMLParser::ResXMLParser(const ResXMLTree& tree)
1015    : mTree(tree), mEventCode(BAD_DOCUMENT)
1016{
1017}
1018
1019void ResXMLParser::restart()
1020{
1021    mCurNode = NULL;
1022    mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
1023}
1024const ResStringPool& ResXMLParser::getStrings() const
1025{
1026    return mTree.mStrings;
1027}
1028
1029ResXMLParser::event_code_t ResXMLParser::getEventType() const
1030{
1031    return mEventCode;
1032}
1033
1034ResXMLParser::event_code_t ResXMLParser::next()
1035{
1036    if (mEventCode == START_DOCUMENT) {
1037        mCurNode = mTree.mRootNode;
1038        mCurExt = mTree.mRootExt;
1039        return (mEventCode=mTree.mRootCode);
1040    } else if (mEventCode >= FIRST_CHUNK_CODE) {
1041        return nextNode();
1042    }
1043    return mEventCode;
1044}
1045
1046int32_t ResXMLParser::getCommentID() const
1047{
1048    return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1049}
1050
1051const char16_t* ResXMLParser::getComment(size_t* outLen) const
1052{
1053    int32_t id = getCommentID();
1054    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1055}
1056
1057uint32_t ResXMLParser::getLineNumber() const
1058{
1059    return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1060}
1061
1062int32_t ResXMLParser::getTextID() const
1063{
1064    if (mEventCode == TEXT) {
1065        return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1066    }
1067    return -1;
1068}
1069
1070const char16_t* ResXMLParser::getText(size_t* outLen) const
1071{
1072    int32_t id = getTextID();
1073    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1074}
1075
1076ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1077{
1078    if (mEventCode == TEXT) {
1079        outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1080        return sizeof(Res_value);
1081    }
1082    return BAD_TYPE;
1083}
1084
1085int32_t ResXMLParser::getNamespacePrefixID() const
1086{
1087    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1088        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1089    }
1090    return -1;
1091}
1092
1093const char16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1094{
1095    int32_t id = getNamespacePrefixID();
1096    //printf("prefix=%d  event=%p\n", id, mEventCode);
1097    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1098}
1099
1100int32_t ResXMLParser::getNamespaceUriID() const
1101{
1102    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1103        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1104    }
1105    return -1;
1106}
1107
1108const char16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1109{
1110    int32_t id = getNamespaceUriID();
1111    //printf("uri=%d  event=%p\n", id, mEventCode);
1112    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1113}
1114
1115int32_t ResXMLParser::getElementNamespaceID() const
1116{
1117    if (mEventCode == START_TAG) {
1118        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1119    }
1120    if (mEventCode == END_TAG) {
1121        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1122    }
1123    return -1;
1124}
1125
1126const char16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1127{
1128    int32_t id = getElementNamespaceID();
1129    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1130}
1131
1132int32_t ResXMLParser::getElementNameID() const
1133{
1134    if (mEventCode == START_TAG) {
1135        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1136    }
1137    if (mEventCode == END_TAG) {
1138        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1139    }
1140    return -1;
1141}
1142
1143const char16_t* ResXMLParser::getElementName(size_t* outLen) const
1144{
1145    int32_t id = getElementNameID();
1146    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1147}
1148
1149size_t ResXMLParser::getAttributeCount() const
1150{
1151    if (mEventCode == START_TAG) {
1152        return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1153    }
1154    return 0;
1155}
1156
1157int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1158{
1159    if (mEventCode == START_TAG) {
1160        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1161        if (idx < dtohs(tag->attributeCount)) {
1162            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1163                (((const uint8_t*)tag)
1164                 + dtohs(tag->attributeStart)
1165                 + (dtohs(tag->attributeSize)*idx));
1166            return dtohl(attr->ns.index);
1167        }
1168    }
1169    return -2;
1170}
1171
1172const char16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1173{
1174    int32_t id = getAttributeNamespaceID(idx);
1175    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1176    if (kDebugXMLNoisy) {
1177        printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1178    }
1179    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1180}
1181
1182const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1183{
1184    int32_t id = getAttributeNamespaceID(idx);
1185    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1186    if (kDebugXMLNoisy) {
1187        printf("getAttributeNamespace 0x%zx=0x%x\n", idx, id);
1188    }
1189    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1190}
1191
1192int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1193{
1194    if (mEventCode == START_TAG) {
1195        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1196        if (idx < dtohs(tag->attributeCount)) {
1197            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1198                (((const uint8_t*)tag)
1199                 + dtohs(tag->attributeStart)
1200                 + (dtohs(tag->attributeSize)*idx));
1201            return dtohl(attr->name.index);
1202        }
1203    }
1204    return -1;
1205}
1206
1207const char16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1208{
1209    int32_t id = getAttributeNameID(idx);
1210    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1211    if (kDebugXMLNoisy) {
1212        printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1213    }
1214    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1215}
1216
1217const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1218{
1219    int32_t id = getAttributeNameID(idx);
1220    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1221    if (kDebugXMLNoisy) {
1222        printf("getAttributeName 0x%zx=0x%x\n", idx, id);
1223    }
1224    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1225}
1226
1227uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1228{
1229    int32_t id = getAttributeNameID(idx);
1230    if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1231        uint32_t resId = dtohl(mTree.mResIds[id]);
1232        if (mTree.mDynamicRefTable != NULL) {
1233            mTree.mDynamicRefTable->lookupResourceId(&resId);
1234        }
1235        return resId;
1236    }
1237    return 0;
1238}
1239
1240int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1241{
1242    if (mEventCode == START_TAG) {
1243        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1244        if (idx < dtohs(tag->attributeCount)) {
1245            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1246                (((const uint8_t*)tag)
1247                 + dtohs(tag->attributeStart)
1248                 + (dtohs(tag->attributeSize)*idx));
1249            return dtohl(attr->rawValue.index);
1250        }
1251    }
1252    return -1;
1253}
1254
1255const char16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1256{
1257    int32_t id = getAttributeValueStringID(idx);
1258    if (kDebugXMLNoisy) {
1259        printf("getAttributeValue 0x%zx=0x%x\n", idx, id);
1260    }
1261    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1262}
1263
1264int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1265{
1266    if (mEventCode == START_TAG) {
1267        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1268        if (idx < dtohs(tag->attributeCount)) {
1269            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1270                (((const uint8_t*)tag)
1271                 + dtohs(tag->attributeStart)
1272                 + (dtohs(tag->attributeSize)*idx));
1273            uint8_t type = attr->typedValue.dataType;
1274            if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1275                return type;
1276            }
1277
1278            // This is a dynamic reference. We adjust those references
1279            // to regular references at this level, so lie to the caller.
1280            return Res_value::TYPE_REFERENCE;
1281        }
1282    }
1283    return Res_value::TYPE_NULL;
1284}
1285
1286int32_t ResXMLParser::getAttributeData(size_t idx) const
1287{
1288    if (mEventCode == START_TAG) {
1289        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1290        if (idx < dtohs(tag->attributeCount)) {
1291            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1292                (((const uint8_t*)tag)
1293                 + dtohs(tag->attributeStart)
1294                 + (dtohs(tag->attributeSize)*idx));
1295            if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1296                    mTree.mDynamicRefTable == NULL) {
1297                return dtohl(attr->typedValue.data);
1298            }
1299
1300            uint32_t data = dtohl(attr->typedValue.data);
1301            if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1302                return data;
1303            }
1304        }
1305    }
1306    return 0;
1307}
1308
1309ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1310{
1311    if (mEventCode == START_TAG) {
1312        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1313        if (idx < dtohs(tag->attributeCount)) {
1314            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1315                (((const uint8_t*)tag)
1316                 + dtohs(tag->attributeStart)
1317                 + (dtohs(tag->attributeSize)*idx));
1318            outValue->copyFrom_dtoh(attr->typedValue);
1319            if (mTree.mDynamicRefTable != NULL &&
1320                    mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1321                return BAD_TYPE;
1322            }
1323            return sizeof(Res_value);
1324        }
1325    }
1326    return BAD_TYPE;
1327}
1328
1329ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1330{
1331    String16 nsStr(ns != NULL ? ns : "");
1332    String16 attrStr(attr);
1333    return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1334                            attrStr.string(), attrStr.size());
1335}
1336
1337ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1338                                       const char16_t* attr, size_t attrLen) const
1339{
1340    if (mEventCode == START_TAG) {
1341        if (attr == NULL) {
1342            return NAME_NOT_FOUND;
1343        }
1344        const size_t N = getAttributeCount();
1345        if (mTree.mStrings.isUTF8()) {
1346            String8 ns8, attr8;
1347            if (ns != NULL) {
1348                ns8 = String8(ns, nsLen);
1349            }
1350            attr8 = String8(attr, attrLen);
1351            if (kDebugStringPoolNoisy) {
1352                ALOGI("indexOfAttribute UTF8 %s (%zu) / %s (%zu)", ns8.string(), nsLen,
1353                        attr8.string(), attrLen);
1354            }
1355            for (size_t i=0; i<N; i++) {
1356                size_t curNsLen = 0, curAttrLen = 0;
1357                const char* curNs = getAttributeNamespace8(i, &curNsLen);
1358                const char* curAttr = getAttributeName8(i, &curAttrLen);
1359                if (kDebugStringPoolNoisy) {
1360                    ALOGI("  curNs=%s (%zu), curAttr=%s (%zu)", curNs, curNsLen, curAttr, curAttrLen);
1361                }
1362                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1363                        && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1364                    if (ns == NULL) {
1365                        if (curNs == NULL) {
1366                            if (kDebugStringPoolNoisy) {
1367                                ALOGI("  FOUND!");
1368                            }
1369                            return i;
1370                        }
1371                    } else if (curNs != NULL) {
1372                        //printf(" --> ns=%s, curNs=%s\n",
1373                        //       String8(ns).string(), String8(curNs).string());
1374                        if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1375                            if (kDebugStringPoolNoisy) {
1376                                ALOGI("  FOUND!");
1377                            }
1378                            return i;
1379                        }
1380                    }
1381                }
1382            }
1383        } else {
1384            if (kDebugStringPoolNoisy) {
1385                ALOGI("indexOfAttribute UTF16 %s (%zu) / %s (%zu)",
1386                        String8(ns, nsLen).string(), nsLen,
1387                        String8(attr, attrLen).string(), attrLen);
1388            }
1389            for (size_t i=0; i<N; i++) {
1390                size_t curNsLen = 0, curAttrLen = 0;
1391                const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1392                const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1393                if (kDebugStringPoolNoisy) {
1394                    ALOGI("  curNs=%s (%zu), curAttr=%s (%zu)",
1395                            String8(curNs, curNsLen).string(), curNsLen,
1396                            String8(curAttr, curAttrLen).string(), curAttrLen);
1397                }
1398                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1399                        && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1400                    if (ns == NULL) {
1401                        if (curNs == NULL) {
1402                            if (kDebugStringPoolNoisy) {
1403                                ALOGI("  FOUND!");
1404                            }
1405                            return i;
1406                        }
1407                    } else if (curNs != NULL) {
1408                        //printf(" --> ns=%s, curNs=%s\n",
1409                        //       String8(ns).string(), String8(curNs).string());
1410                        if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1411                            if (kDebugStringPoolNoisy) {
1412                                ALOGI("  FOUND!");
1413                            }
1414                            return i;
1415                        }
1416                    }
1417                }
1418            }
1419        }
1420    }
1421
1422    return NAME_NOT_FOUND;
1423}
1424
1425ssize_t ResXMLParser::indexOfID() const
1426{
1427    if (mEventCode == START_TAG) {
1428        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1429        if (idx > 0) return (idx-1);
1430    }
1431    return NAME_NOT_FOUND;
1432}
1433
1434ssize_t ResXMLParser::indexOfClass() const
1435{
1436    if (mEventCode == START_TAG) {
1437        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1438        if (idx > 0) return (idx-1);
1439    }
1440    return NAME_NOT_FOUND;
1441}
1442
1443ssize_t ResXMLParser::indexOfStyle() const
1444{
1445    if (mEventCode == START_TAG) {
1446        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1447        if (idx > 0) return (idx-1);
1448    }
1449    return NAME_NOT_FOUND;
1450}
1451
1452ResXMLParser::event_code_t ResXMLParser::nextNode()
1453{
1454    if (mEventCode < 0) {
1455        return mEventCode;
1456    }
1457
1458    do {
1459        const ResXMLTree_node* next = (const ResXMLTree_node*)
1460            (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1461        if (kDebugXMLNoisy) {
1462            ALOGI("Next node: prev=%p, next=%p\n", mCurNode, next);
1463        }
1464
1465        if (((const uint8_t*)next) >= mTree.mDataEnd) {
1466            mCurNode = NULL;
1467            return (mEventCode=END_DOCUMENT);
1468        }
1469
1470        if (mTree.validateNode(next) != NO_ERROR) {
1471            mCurNode = NULL;
1472            return (mEventCode=BAD_DOCUMENT);
1473        }
1474
1475        mCurNode = next;
1476        const uint16_t headerSize = dtohs(next->header.headerSize);
1477        const uint32_t totalSize = dtohl(next->header.size);
1478        mCurExt = ((const uint8_t*)next) + headerSize;
1479        size_t minExtSize = 0;
1480        event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1481        switch ((mEventCode=eventCode)) {
1482            case RES_XML_START_NAMESPACE_TYPE:
1483            case RES_XML_END_NAMESPACE_TYPE:
1484                minExtSize = sizeof(ResXMLTree_namespaceExt);
1485                break;
1486            case RES_XML_START_ELEMENT_TYPE:
1487                minExtSize = sizeof(ResXMLTree_attrExt);
1488                break;
1489            case RES_XML_END_ELEMENT_TYPE:
1490                minExtSize = sizeof(ResXMLTree_endElementExt);
1491                break;
1492            case RES_XML_CDATA_TYPE:
1493                minExtSize = sizeof(ResXMLTree_cdataExt);
1494                break;
1495            default:
1496                ALOGW("Unknown XML block: header type %d in node at %d\n",
1497                     (int)dtohs(next->header.type),
1498                     (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1499                continue;
1500        }
1501
1502        if ((totalSize-headerSize) < minExtSize) {
1503            ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1504                 (int)dtohs(next->header.type),
1505                 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1506                 (int)(totalSize-headerSize), (int)minExtSize);
1507            return (mEventCode=BAD_DOCUMENT);
1508        }
1509
1510        //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1511        //       mCurNode, mCurExt, headerSize, minExtSize);
1512
1513        return eventCode;
1514    } while (true);
1515}
1516
1517void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1518{
1519    pos->eventCode = mEventCode;
1520    pos->curNode = mCurNode;
1521    pos->curExt = mCurExt;
1522}
1523
1524void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1525{
1526    mEventCode = pos.eventCode;
1527    mCurNode = pos.curNode;
1528    mCurExt = pos.curExt;
1529}
1530
1531// --------------------------------------------------------------------
1532
1533static volatile int32_t gCount = 0;
1534
1535ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1536    : ResXMLParser(*this)
1537    , mDynamicRefTable(dynamicRefTable)
1538    , mError(NO_INIT), mOwnedData(NULL)
1539{
1540    if (kDebugResXMLTree) {
1541        ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1542    }
1543    restart();
1544}
1545
1546ResXMLTree::ResXMLTree()
1547    : ResXMLParser(*this)
1548    , mDynamicRefTable(NULL)
1549    , mError(NO_INIT), mOwnedData(NULL)
1550{
1551    if (kDebugResXMLTree) {
1552        ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1553    }
1554    restart();
1555}
1556
1557ResXMLTree::~ResXMLTree()
1558{
1559    if (kDebugResXMLTree) {
1560        ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1561    }
1562    uninit();
1563}
1564
1565status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1566{
1567    uninit();
1568    mEventCode = START_DOCUMENT;
1569
1570    if (!data || !size) {
1571        return (mError=BAD_TYPE);
1572    }
1573
1574    if (copyData) {
1575        mOwnedData = malloc(size);
1576        if (mOwnedData == NULL) {
1577            return (mError=NO_MEMORY);
1578        }
1579        memcpy(mOwnedData, data, size);
1580        data = mOwnedData;
1581    }
1582
1583    mHeader = (const ResXMLTree_header*)data;
1584    mSize = dtohl(mHeader->header.size);
1585    if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1586        ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1587             (int)dtohs(mHeader->header.headerSize),
1588             (int)dtohl(mHeader->header.size), (int)size);
1589        mError = BAD_TYPE;
1590        restart();
1591        return mError;
1592    }
1593    mDataEnd = ((const uint8_t*)mHeader) + mSize;
1594
1595    mStrings.uninit();
1596    mRootNode = NULL;
1597    mResIds = NULL;
1598    mNumResIds = 0;
1599
1600    // First look for a couple interesting chunks: the string block
1601    // and first XML node.
1602    const ResChunk_header* chunk =
1603        (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1604    const ResChunk_header* lastChunk = chunk;
1605    while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1606           ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1607        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1608        if (err != NO_ERROR) {
1609            mError = err;
1610            goto done;
1611        }
1612        const uint16_t type = dtohs(chunk->type);
1613        const size_t size = dtohl(chunk->size);
1614        if (kDebugXMLNoisy) {
1615            printf("Scanning @ %p: type=0x%x, size=0x%zx\n",
1616                    (void*)(((uintptr_t)chunk)-((uintptr_t)mHeader)), type, size);
1617        }
1618        if (type == RES_STRING_POOL_TYPE) {
1619            mStrings.setTo(chunk, size);
1620        } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1621            mResIds = (const uint32_t*)
1622                (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1623            mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1624        } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1625                   && type <= RES_XML_LAST_CHUNK_TYPE) {
1626            if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1627                mError = BAD_TYPE;
1628                goto done;
1629            }
1630            mCurNode = (const ResXMLTree_node*)lastChunk;
1631            if (nextNode() == BAD_DOCUMENT) {
1632                mError = BAD_TYPE;
1633                goto done;
1634            }
1635            mRootNode = mCurNode;
1636            mRootExt = mCurExt;
1637            mRootCode = mEventCode;
1638            break;
1639        } else {
1640            if (kDebugXMLNoisy) {
1641                printf("Skipping unknown chunk!\n");
1642            }
1643        }
1644        lastChunk = chunk;
1645        chunk = (const ResChunk_header*)
1646            (((const uint8_t*)chunk) + size);
1647    }
1648
1649    if (mRootNode == NULL) {
1650        ALOGW("Bad XML block: no root element node found\n");
1651        mError = BAD_TYPE;
1652        goto done;
1653    }
1654
1655    mError = mStrings.getError();
1656
1657done:
1658    restart();
1659    return mError;
1660}
1661
1662status_t ResXMLTree::getError() const
1663{
1664    return mError;
1665}
1666
1667void ResXMLTree::uninit()
1668{
1669    mError = NO_INIT;
1670    mStrings.uninit();
1671    if (mOwnedData) {
1672        free(mOwnedData);
1673        mOwnedData = NULL;
1674    }
1675    restart();
1676}
1677
1678status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1679{
1680    const uint16_t eventCode = dtohs(node->header.type);
1681
1682    status_t err = validate_chunk(
1683        &node->header, sizeof(ResXMLTree_node),
1684        mDataEnd, "ResXMLTree_node");
1685
1686    if (err >= NO_ERROR) {
1687        // Only perform additional validation on START nodes
1688        if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1689            return NO_ERROR;
1690        }
1691
1692        const uint16_t headerSize = dtohs(node->header.headerSize);
1693        const uint32_t size = dtohl(node->header.size);
1694        const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1695            (((const uint8_t*)node) + headerSize);
1696        // check for sensical values pulled out of the stream so far...
1697        if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1698                && ((void*)attrExt > (void*)node)) {
1699            const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1700                * dtohs(attrExt->attributeCount);
1701            if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1702                return NO_ERROR;
1703            }
1704            ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1705                    (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1706                    (unsigned int)(size-headerSize));
1707        }
1708        else {
1709            ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1710                (unsigned int)headerSize, (unsigned int)size);
1711        }
1712        return BAD_TYPE;
1713    }
1714
1715    return err;
1716
1717#if 0
1718    const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1719
1720    const uint16_t headerSize = dtohs(node->header.headerSize);
1721    const uint32_t size = dtohl(node->header.size);
1722
1723    if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1724        if (size >= headerSize) {
1725            if (((const uint8_t*)node) <= (mDataEnd-size)) {
1726                if (!isStart) {
1727                    return NO_ERROR;
1728                }
1729                if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1730                        <= (size-headerSize)) {
1731                    return NO_ERROR;
1732                }
1733                ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1734                        ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1735                        (int)(size-headerSize));
1736                return BAD_TYPE;
1737            }
1738            ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1739                    (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1740            return BAD_TYPE;
1741        }
1742        ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1743                (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1744                (int)headerSize, (int)size);
1745        return BAD_TYPE;
1746    }
1747    ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1748            (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1749            (int)headerSize);
1750    return BAD_TYPE;
1751#endif
1752}
1753
1754// --------------------------------------------------------------------
1755// --------------------------------------------------------------------
1756// --------------------------------------------------------------------
1757
1758void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1759    const size_t size = dtohl(o.size);
1760    if (size >= sizeof(ResTable_config)) {
1761        *this = o;
1762    } else {
1763        memcpy(this, &o, size);
1764        memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1765    }
1766}
1767
1768/* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1769        char out[4]) {
1770  if (in[0] & 0x80) {
1771      // The high bit is "1", which means this is a packed three letter
1772      // language code.
1773
1774      // The smallest 5 bits of the second char are the first alphabet.
1775      const uint8_t first = in[1] & 0x1f;
1776      // The last three bits of the second char and the first two bits
1777      // of the first char are the second alphabet.
1778      const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1779      // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1780      const uint8_t third = (in[0] & 0x7c) >> 2;
1781
1782      out[0] = first + base;
1783      out[1] = second + base;
1784      out[2] = third + base;
1785      out[3] = 0;
1786
1787      return 3;
1788  }
1789
1790  if (in[0]) {
1791      memcpy(out, in, 2);
1792      memset(out + 2, 0, 2);
1793      return 2;
1794  }
1795
1796  memset(out, 0, 4);
1797  return 0;
1798}
1799
1800/* static */ void packLanguageOrRegion(const char* in, const char base,
1801        char out[2]) {
1802  if (in[2] == 0 || in[2] == '-') {
1803      out[0] = in[0];
1804      out[1] = in[1];
1805  } else {
1806      uint8_t first = (in[0] - base) & 0x007f;
1807      uint8_t second = (in[1] - base) & 0x007f;
1808      uint8_t third = (in[2] - base) & 0x007f;
1809
1810      out[0] = (0x80 | (third << 2) | (second >> 3));
1811      out[1] = ((second << 5) | first);
1812  }
1813}
1814
1815
1816void ResTable_config::packLanguage(const char* language) {
1817    packLanguageOrRegion(language, 'a', this->language);
1818}
1819
1820void ResTable_config::packRegion(const char* region) {
1821    packLanguageOrRegion(region, '0', this->country);
1822}
1823
1824size_t ResTable_config::unpackLanguage(char language[4]) const {
1825    return unpackLanguageOrRegion(this->language, 'a', language);
1826}
1827
1828size_t ResTable_config::unpackRegion(char region[4]) const {
1829    return unpackLanguageOrRegion(this->country, '0', region);
1830}
1831
1832
1833void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1834    copyFromDeviceNoSwap(o);
1835    size = sizeof(ResTable_config);
1836    mcc = dtohs(mcc);
1837    mnc = dtohs(mnc);
1838    density = dtohs(density);
1839    screenWidth = dtohs(screenWidth);
1840    screenHeight = dtohs(screenHeight);
1841    sdkVersion = dtohs(sdkVersion);
1842    minorVersion = dtohs(minorVersion);
1843    smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1844    screenWidthDp = dtohs(screenWidthDp);
1845    screenHeightDp = dtohs(screenHeightDp);
1846}
1847
1848void ResTable_config::swapHtoD() {
1849    size = htodl(size);
1850    mcc = htods(mcc);
1851    mnc = htods(mnc);
1852    density = htods(density);
1853    screenWidth = htods(screenWidth);
1854    screenHeight = htods(screenHeight);
1855    sdkVersion = htods(sdkVersion);
1856    minorVersion = htods(minorVersion);
1857    smallestScreenWidthDp = htods(smallestScreenWidthDp);
1858    screenWidthDp = htods(screenWidthDp);
1859    screenHeightDp = htods(screenHeightDp);
1860}
1861
1862/* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1863    if (l.locale != r.locale) {
1864        // NOTE: This is the old behaviour with respect to comparison orders.
1865        // The diff value here doesn't make much sense (given our bit packing scheme)
1866        // but it's stable, and that's all we need.
1867        return l.locale - r.locale;
1868    }
1869
1870    // The language & region are equal, so compare the scripts and variants.
1871    int script = memcmp(l.localeScript, r.localeScript, sizeof(l.localeScript));
1872    if (script) {
1873        return script;
1874    }
1875
1876    // The language, region and script are equal, so compare variants.
1877    //
1878    // This should happen very infrequently (if at all.)
1879    return memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1880}
1881
1882int ResTable_config::compare(const ResTable_config& o) const {
1883    int32_t diff = (int32_t)(imsi - o.imsi);
1884    if (diff != 0) return diff;
1885    diff = compareLocales(*this, o);
1886    if (diff != 0) return diff;
1887    diff = (int32_t)(screenType - o.screenType);
1888    if (diff != 0) return diff;
1889    diff = (int32_t)(input - o.input);
1890    if (diff != 0) return diff;
1891    diff = (int32_t)(screenSize - o.screenSize);
1892    if (diff != 0) return diff;
1893    diff = (int32_t)(version - o.version);
1894    if (diff != 0) return diff;
1895    diff = (int32_t)(screenLayout - o.screenLayout);
1896    if (diff != 0) return diff;
1897    diff = (int32_t)(screenLayout2 - o.screenLayout2);
1898    if (diff != 0) return diff;
1899    diff = (int32_t)(uiMode - o.uiMode);
1900    if (diff != 0) return diff;
1901    diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1902    if (diff != 0) return diff;
1903    diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1904    return (int)diff;
1905}
1906
1907int ResTable_config::compareLogical(const ResTable_config& o) const {
1908    if (mcc != o.mcc) {
1909        return mcc < o.mcc ? -1 : 1;
1910    }
1911    if (mnc != o.mnc) {
1912        return mnc < o.mnc ? -1 : 1;
1913    }
1914
1915    int diff = compareLocales(*this, o);
1916    if (diff < 0) {
1917        return -1;
1918    }
1919    if (diff > 0) {
1920        return 1;
1921    }
1922
1923    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1924        return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1925    }
1926    if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1927        return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1928    }
1929    if (screenWidthDp != o.screenWidthDp) {
1930        return screenWidthDp < o.screenWidthDp ? -1 : 1;
1931    }
1932    if (screenHeightDp != o.screenHeightDp) {
1933        return screenHeightDp < o.screenHeightDp ? -1 : 1;
1934    }
1935    if (screenWidth != o.screenWidth) {
1936        return screenWidth < o.screenWidth ? -1 : 1;
1937    }
1938    if (screenHeight != o.screenHeight) {
1939        return screenHeight < o.screenHeight ? -1 : 1;
1940    }
1941    if (density != o.density) {
1942        return density < o.density ? -1 : 1;
1943    }
1944    if (orientation != o.orientation) {
1945        return orientation < o.orientation ? -1 : 1;
1946    }
1947    if (touchscreen != o.touchscreen) {
1948        return touchscreen < o.touchscreen ? -1 : 1;
1949    }
1950    if (input != o.input) {
1951        return input < o.input ? -1 : 1;
1952    }
1953    if (screenLayout != o.screenLayout) {
1954        return screenLayout < o.screenLayout ? -1 : 1;
1955    }
1956    if (screenLayout2 != o.screenLayout2) {
1957        return screenLayout2 < o.screenLayout2 ? -1 : 1;
1958    }
1959    if (uiMode != o.uiMode) {
1960        return uiMode < o.uiMode ? -1 : 1;
1961    }
1962    if (version != o.version) {
1963        return version < o.version ? -1 : 1;
1964    }
1965    return 0;
1966}
1967
1968int ResTable_config::diff(const ResTable_config& o) const {
1969    int diffs = 0;
1970    if (mcc != o.mcc) diffs |= CONFIG_MCC;
1971    if (mnc != o.mnc) diffs |= CONFIG_MNC;
1972    if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1973    if (density != o.density) diffs |= CONFIG_DENSITY;
1974    if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1975    if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1976            diffs |= CONFIG_KEYBOARD_HIDDEN;
1977    if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1978    if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1979    if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1980    if (version != o.version) diffs |= CONFIG_VERSION;
1981    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
1982    if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
1983    if ((screenLayout2 & MASK_SCREENROUND) != (o.screenLayout2 & MASK_SCREENROUND)) diffs |= CONFIG_SCREEN_ROUND;
1984    if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1985    if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1986    if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1987
1988    const int diff = compareLocales(*this, o);
1989    if (diff) diffs |= CONFIG_LOCALE;
1990
1991    return diffs;
1992}
1993
1994int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
1995    if (locale || o.locale) {
1996        if (language[0] != o.language[0]) {
1997            if (!language[0]) return -1;
1998            if (!o.language[0]) return 1;
1999        }
2000
2001        if (country[0] != o.country[0]) {
2002            if (!country[0]) return -1;
2003            if (!o.country[0]) return 1;
2004        }
2005    }
2006
2007    // There isn't a well specified "importance" order between variants and
2008    // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
2009    // specific than "en-US-POSIX".
2010    //
2011    // We therefore arbitrarily decide to give priority to variants over
2012    // scripts since it seems more useful to do so. We will consider
2013    // "en-US-POSIX" to be more specific than "en-Latn-US".
2014
2015    const int score = ((localeScript[0] != 0) ? 1 : 0) +
2016        ((localeVariant[0] != 0) ? 2 : 0);
2017
2018    const int oScore = ((o.localeScript[0] != 0) ? 1 : 0) +
2019        ((o.localeVariant[0] != 0) ? 2 : 0);
2020
2021    return score - oScore;
2022
2023}
2024
2025bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
2026    // The order of the following tests defines the importance of one
2027    // configuration parameter over another.  Those tests first are more
2028    // important, trumping any values in those following them.
2029    if (imsi || o.imsi) {
2030        if (mcc != o.mcc) {
2031            if (!mcc) return false;
2032            if (!o.mcc) return true;
2033        }
2034
2035        if (mnc != o.mnc) {
2036            if (!mnc) return false;
2037            if (!o.mnc) return true;
2038        }
2039    }
2040
2041    if (locale || o.locale) {
2042        const int diff = isLocaleMoreSpecificThan(o);
2043        if (diff < 0) {
2044            return false;
2045        }
2046
2047        if (diff > 0) {
2048            return true;
2049        }
2050    }
2051
2052    if (screenLayout || o.screenLayout) {
2053        if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
2054            if (!(screenLayout & MASK_LAYOUTDIR)) return false;
2055            if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
2056        }
2057    }
2058
2059    if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2060        if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2061            if (!smallestScreenWidthDp) return false;
2062            if (!o.smallestScreenWidthDp) return true;
2063        }
2064    }
2065
2066    if (screenSizeDp || o.screenSizeDp) {
2067        if (screenWidthDp != o.screenWidthDp) {
2068            if (!screenWidthDp) return false;
2069            if (!o.screenWidthDp) return true;
2070        }
2071
2072        if (screenHeightDp != o.screenHeightDp) {
2073            if (!screenHeightDp) return false;
2074            if (!o.screenHeightDp) return true;
2075        }
2076    }
2077
2078    if (screenLayout || o.screenLayout) {
2079        if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
2080            if (!(screenLayout & MASK_SCREENSIZE)) return false;
2081            if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2082        }
2083        if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2084            if (!(screenLayout & MASK_SCREENLONG)) return false;
2085            if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2086        }
2087    }
2088
2089    if (screenLayout2 || o.screenLayout2) {
2090        if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0) {
2091            if (!(screenLayout2 & MASK_SCREENROUND)) return false;
2092            if (!(o.screenLayout2 & MASK_SCREENROUND)) return true;
2093        }
2094    }
2095
2096    if (orientation != o.orientation) {
2097        if (!orientation) return false;
2098        if (!o.orientation) return true;
2099    }
2100
2101    if (uiMode || o.uiMode) {
2102        if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2103            if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2104            if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2105        }
2106        if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2107            if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2108            if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2109        }
2110    }
2111
2112    // density is never 'more specific'
2113    // as the default just equals 160
2114
2115    if (touchscreen != o.touchscreen) {
2116        if (!touchscreen) return false;
2117        if (!o.touchscreen) return true;
2118    }
2119
2120    if (input || o.input) {
2121        if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2122            if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2123            if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2124        }
2125
2126        if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2127            if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2128            if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2129        }
2130
2131        if (keyboard != o.keyboard) {
2132            if (!keyboard) return false;
2133            if (!o.keyboard) return true;
2134        }
2135
2136        if (navigation != o.navigation) {
2137            if (!navigation) return false;
2138            if (!o.navigation) return true;
2139        }
2140    }
2141
2142    if (screenSize || o.screenSize) {
2143        if (screenWidth != o.screenWidth) {
2144            if (!screenWidth) return false;
2145            if (!o.screenWidth) return true;
2146        }
2147
2148        if (screenHeight != o.screenHeight) {
2149            if (!screenHeight) return false;
2150            if (!o.screenHeight) return true;
2151        }
2152    }
2153
2154    if (version || o.version) {
2155        if (sdkVersion != o.sdkVersion) {
2156            if (!sdkVersion) return false;
2157            if (!o.sdkVersion) return true;
2158        }
2159
2160        if (minorVersion != o.minorVersion) {
2161            if (!minorVersion) return false;
2162            if (!o.minorVersion) return true;
2163        }
2164    }
2165    return false;
2166}
2167
2168bool ResTable_config::isBetterThan(const ResTable_config& o,
2169        const ResTable_config* requested) const {
2170    if (requested) {
2171        if (imsi || o.imsi) {
2172            if ((mcc != o.mcc) && requested->mcc) {
2173                return (mcc);
2174            }
2175
2176            if ((mnc != o.mnc) && requested->mnc) {
2177                return (mnc);
2178            }
2179        }
2180
2181        if (locale || o.locale) {
2182            if ((language[0] != o.language[0]) && requested->language[0]) {
2183                return (language[0]);
2184            }
2185
2186            if ((country[0] != o.country[0]) && requested->country[0]) {
2187                return (country[0]);
2188            }
2189        }
2190
2191        if (localeScript[0] || o.localeScript[0]) {
2192            if (localeScript[0] != o.localeScript[0] && requested->localeScript[0]) {
2193                return localeScript[0];
2194            }
2195        }
2196
2197        if (localeVariant[0] || o.localeVariant[0]) {
2198            if (localeVariant[0] != o.localeVariant[0] && requested->localeVariant[0]) {
2199                return localeVariant[0];
2200            }
2201        }
2202
2203        if (screenLayout || o.screenLayout) {
2204            if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2205                    && (requested->screenLayout & MASK_LAYOUTDIR)) {
2206                int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2207                int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2208                return (myLayoutDir > oLayoutDir);
2209            }
2210        }
2211
2212        if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2213            // The configuration closest to the actual size is best.
2214            // We assume that larger configs have already been filtered
2215            // out at this point.  That means we just want the largest one.
2216            if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2217                return smallestScreenWidthDp > o.smallestScreenWidthDp;
2218            }
2219        }
2220
2221        if (screenSizeDp || o.screenSizeDp) {
2222            // "Better" is based on the sum of the difference between both
2223            // width and height from the requested dimensions.  We are
2224            // assuming the invalid configs (with smaller dimens) have
2225            // already been filtered.  Note that if a particular dimension
2226            // is unspecified, we will end up with a large value (the
2227            // difference between 0 and the requested dimension), which is
2228            // good since we will prefer a config that has specified a
2229            // dimension value.
2230            int myDelta = 0, otherDelta = 0;
2231            if (requested->screenWidthDp) {
2232                myDelta += requested->screenWidthDp - screenWidthDp;
2233                otherDelta += requested->screenWidthDp - o.screenWidthDp;
2234            }
2235            if (requested->screenHeightDp) {
2236                myDelta += requested->screenHeightDp - screenHeightDp;
2237                otherDelta += requested->screenHeightDp - o.screenHeightDp;
2238            }
2239            if (kDebugTableSuperNoisy) {
2240                ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2241                        screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2242                        requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2243            }
2244            if (myDelta != otherDelta) {
2245                return myDelta < otherDelta;
2246            }
2247        }
2248
2249        if (screenLayout || o.screenLayout) {
2250            if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2251                    && (requested->screenLayout & MASK_SCREENSIZE)) {
2252                // A little backwards compatibility here: undefined is
2253                // considered equivalent to normal.  But only if the
2254                // requested size is at least normal; otherwise, small
2255                // is better than the default.
2256                int mySL = (screenLayout & MASK_SCREENSIZE);
2257                int oSL = (o.screenLayout & MASK_SCREENSIZE);
2258                int fixedMySL = mySL;
2259                int fixedOSL = oSL;
2260                if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2261                    if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2262                    if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2263                }
2264                // For screen size, the best match is the one that is
2265                // closest to the requested screen size, but not over
2266                // (the not over part is dealt with in match() below).
2267                if (fixedMySL == fixedOSL) {
2268                    // If the two are the same, but 'this' is actually
2269                    // undefined, then the other is really a better match.
2270                    if (mySL == 0) return false;
2271                    return true;
2272                }
2273                if (fixedMySL != fixedOSL) {
2274                    return fixedMySL > fixedOSL;
2275                }
2276            }
2277            if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2278                    && (requested->screenLayout & MASK_SCREENLONG)) {
2279                return (screenLayout & MASK_SCREENLONG);
2280            }
2281        }
2282
2283        if (screenLayout2 || o.screenLayout2) {
2284            if (((screenLayout2^o.screenLayout2) & MASK_SCREENROUND) != 0 &&
2285                    (requested->screenLayout2 & MASK_SCREENROUND)) {
2286                return screenLayout2 & MASK_SCREENROUND;
2287            }
2288        }
2289
2290        if ((orientation != o.orientation) && requested->orientation) {
2291            return (orientation);
2292        }
2293
2294        if (uiMode || o.uiMode) {
2295            if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2296                    && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2297                return (uiMode & MASK_UI_MODE_TYPE);
2298            }
2299            if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2300                    && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2301                return (uiMode & MASK_UI_MODE_NIGHT);
2302            }
2303        }
2304
2305        if (screenType || o.screenType) {
2306            if (density != o.density) {
2307                // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2308                const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2309                const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2310
2311                // We always prefer DENSITY_ANY over scaling a density bucket.
2312                if (thisDensity == ResTable_config::DENSITY_ANY) {
2313                    return true;
2314                } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2315                    return false;
2316                }
2317
2318                int requestedDensity = requested->density;
2319                if (requested->density == 0 ||
2320                        requested->density == ResTable_config::DENSITY_ANY) {
2321                    requestedDensity = ResTable_config::DENSITY_MEDIUM;
2322                }
2323
2324                // DENSITY_ANY is now dealt with. We should look to
2325                // pick a density bucket and potentially scale it.
2326                // Any density is potentially useful
2327                // because the system will scale it.  Scaling down
2328                // is generally better than scaling up.
2329                int h = thisDensity;
2330                int l = otherDensity;
2331                bool bImBigger = true;
2332                if (l > h) {
2333                    int t = h;
2334                    h = l;
2335                    l = t;
2336                    bImBigger = false;
2337                }
2338
2339                if (requestedDensity >= h) {
2340                    // requested value higher than both l and h, give h
2341                    return bImBigger;
2342                }
2343                if (l >= requestedDensity) {
2344                    // requested value lower than both l and h, give l
2345                    return !bImBigger;
2346                }
2347                // saying that scaling down is 2x better than up
2348                if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2349                    return !bImBigger;
2350                } else {
2351                    return bImBigger;
2352                }
2353            }
2354
2355            if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2356                return (touchscreen);
2357            }
2358        }
2359
2360        if (input || o.input) {
2361            const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2362            const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2363            if (keysHidden != oKeysHidden) {
2364                const int reqKeysHidden =
2365                        requested->inputFlags & MASK_KEYSHIDDEN;
2366                if (reqKeysHidden) {
2367
2368                    if (!keysHidden) return false;
2369                    if (!oKeysHidden) return true;
2370                    // For compatibility, we count KEYSHIDDEN_NO as being
2371                    // the same as KEYSHIDDEN_SOFT.  Here we disambiguate
2372                    // these by making an exact match more specific.
2373                    if (reqKeysHidden == keysHidden) return true;
2374                    if (reqKeysHidden == oKeysHidden) return false;
2375                }
2376            }
2377
2378            const int navHidden = inputFlags & MASK_NAVHIDDEN;
2379            const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2380            if (navHidden != oNavHidden) {
2381                const int reqNavHidden =
2382                        requested->inputFlags & MASK_NAVHIDDEN;
2383                if (reqNavHidden) {
2384
2385                    if (!navHidden) return false;
2386                    if (!oNavHidden) return true;
2387                }
2388            }
2389
2390            if ((keyboard != o.keyboard) && requested->keyboard) {
2391                return (keyboard);
2392            }
2393
2394            if ((navigation != o.navigation) && requested->navigation) {
2395                return (navigation);
2396            }
2397        }
2398
2399        if (screenSize || o.screenSize) {
2400            // "Better" is based on the sum of the difference between both
2401            // width and height from the requested dimensions.  We are
2402            // assuming the invalid configs (with smaller sizes) have
2403            // already been filtered.  Note that if a particular dimension
2404            // is unspecified, we will end up with a large value (the
2405            // difference between 0 and the requested dimension), which is
2406            // good since we will prefer a config that has specified a
2407            // size value.
2408            int myDelta = 0, otherDelta = 0;
2409            if (requested->screenWidth) {
2410                myDelta += requested->screenWidth - screenWidth;
2411                otherDelta += requested->screenWidth - o.screenWidth;
2412            }
2413            if (requested->screenHeight) {
2414                myDelta += requested->screenHeight - screenHeight;
2415                otherDelta += requested->screenHeight - o.screenHeight;
2416            }
2417            if (myDelta != otherDelta) {
2418                return myDelta < otherDelta;
2419            }
2420        }
2421
2422        if (version || o.version) {
2423            if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2424                return (sdkVersion > o.sdkVersion);
2425            }
2426
2427            if ((minorVersion != o.minorVersion) &&
2428                    requested->minorVersion) {
2429                return (minorVersion);
2430            }
2431        }
2432
2433        return false;
2434    }
2435    return isMoreSpecificThan(o);
2436}
2437
2438bool ResTable_config::match(const ResTable_config& settings) const {
2439    if (imsi != 0) {
2440        if (mcc != 0 && mcc != settings.mcc) {
2441            return false;
2442        }
2443        if (mnc != 0 && mnc != settings.mnc) {
2444            return false;
2445        }
2446    }
2447    if (locale != 0) {
2448        // Don't consider the script & variants when deciding matches.
2449        //
2450        // If we two configs differ only in their script or language, they
2451        // can be weeded out in the isMoreSpecificThan test.
2452        if (language[0] != 0
2453            && (language[0] != settings.language[0]
2454                || language[1] != settings.language[1])) {
2455            return false;
2456        }
2457
2458        if (country[0] != 0
2459            && (country[0] != settings.country[0]
2460                || country[1] != settings.country[1])) {
2461            return false;
2462        }
2463    }
2464
2465    if (screenConfig != 0) {
2466        const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2467        const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2468        if (layoutDir != 0 && layoutDir != setLayoutDir) {
2469            return false;
2470        }
2471
2472        const int screenSize = screenLayout&MASK_SCREENSIZE;
2473        const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2474        // Any screen sizes for larger screens than the setting do not
2475        // match.
2476        if (screenSize != 0 && screenSize > setScreenSize) {
2477            return false;
2478        }
2479
2480        const int screenLong = screenLayout&MASK_SCREENLONG;
2481        const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2482        if (screenLong != 0 && screenLong != setScreenLong) {
2483            return false;
2484        }
2485
2486        const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2487        const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2488        if (uiModeType != 0 && uiModeType != setUiModeType) {
2489            return false;
2490        }
2491
2492        const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2493        const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2494        if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2495            return false;
2496        }
2497
2498        if (smallestScreenWidthDp != 0
2499                && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2500            return false;
2501        }
2502    }
2503
2504    if (screenConfig2 != 0) {
2505        const int screenRound = screenLayout2 & MASK_SCREENROUND;
2506        const int setScreenRound = settings.screenLayout2 & MASK_SCREENROUND;
2507        if (screenRound != 0 && screenRound != setScreenRound) {
2508            return false;
2509        }
2510    }
2511
2512    if (screenSizeDp != 0) {
2513        if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2514            if (kDebugTableSuperNoisy) {
2515                ALOGI("Filtering out width %d in requested %d", screenWidthDp,
2516                        settings.screenWidthDp);
2517            }
2518            return false;
2519        }
2520        if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2521            if (kDebugTableSuperNoisy) {
2522                ALOGI("Filtering out height %d in requested %d", screenHeightDp,
2523                        settings.screenHeightDp);
2524            }
2525            return false;
2526        }
2527    }
2528    if (screenType != 0) {
2529        if (orientation != 0 && orientation != settings.orientation) {
2530            return false;
2531        }
2532        // density always matches - we can scale it.  See isBetterThan
2533        if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2534            return false;
2535        }
2536    }
2537    if (input != 0) {
2538        const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2539        const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2540        if (keysHidden != 0 && keysHidden != setKeysHidden) {
2541            // For compatibility, we count a request for KEYSHIDDEN_NO as also
2542            // matching the more recent KEYSHIDDEN_SOFT.  Basically
2543            // KEYSHIDDEN_NO means there is some kind of keyboard available.
2544            if (kDebugTableSuperNoisy) {
2545                ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2546            }
2547            if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2548                if (kDebugTableSuperNoisy) {
2549                    ALOGI("No match!");
2550                }
2551                return false;
2552            }
2553        }
2554        const int navHidden = inputFlags&MASK_NAVHIDDEN;
2555        const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2556        if (navHidden != 0 && navHidden != setNavHidden) {
2557            return false;
2558        }
2559        if (keyboard != 0 && keyboard != settings.keyboard) {
2560            return false;
2561        }
2562        if (navigation != 0 && navigation != settings.navigation) {
2563            return false;
2564        }
2565    }
2566    if (screenSize != 0) {
2567        if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2568            return false;
2569        }
2570        if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2571            return false;
2572        }
2573    }
2574    if (version != 0) {
2575        if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2576            return false;
2577        }
2578        if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2579            return false;
2580        }
2581    }
2582    return true;
2583}
2584
2585void ResTable_config::appendDirLocale(String8& out) const {
2586    if (!language[0]) {
2587        return;
2588    }
2589
2590    if (!localeScript[0] && !localeVariant[0]) {
2591        // Legacy format.
2592        if (out.size() > 0) {
2593            out.append("-");
2594        }
2595
2596        char buf[4];
2597        size_t len = unpackLanguage(buf);
2598        out.append(buf, len);
2599
2600        if (country[0]) {
2601            out.append("-r");
2602            len = unpackRegion(buf);
2603            out.append(buf, len);
2604        }
2605        return;
2606    }
2607
2608    // We are writing the modified bcp47 tag.
2609    // It starts with 'b+' and uses '+' as a separator.
2610
2611    if (out.size() > 0) {
2612        out.append("-");
2613    }
2614    out.append("b+");
2615
2616    char buf[4];
2617    size_t len = unpackLanguage(buf);
2618    out.append(buf, len);
2619
2620    if (localeScript[0]) {
2621        out.append("+");
2622        out.append(localeScript, sizeof(localeScript));
2623    }
2624
2625    if (country[0]) {
2626        out.append("+");
2627        len = unpackRegion(buf);
2628        out.append(buf, len);
2629    }
2630
2631    if (localeVariant[0]) {
2632        out.append("+");
2633        out.append(localeVariant, sizeof(localeVariant));
2634    }
2635}
2636
2637void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const {
2638    memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2639
2640    // This represents the "any" locale value, which has traditionally been
2641    // represented by the empty string.
2642    if (!language[0] && !country[0]) {
2643        return;
2644    }
2645
2646    size_t charsWritten = 0;
2647    if (language[0]) {
2648        charsWritten += unpackLanguage(str);
2649    }
2650
2651    if (localeScript[0]) {
2652        if (charsWritten) {
2653            str[charsWritten++] = '-';
2654        }
2655        memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2656        charsWritten += sizeof(localeScript);
2657    }
2658
2659    if (country[0]) {
2660        if (charsWritten) {
2661            str[charsWritten++] = '-';
2662        }
2663        charsWritten += unpackRegion(str + charsWritten);
2664    }
2665
2666    if (localeVariant[0]) {
2667        if (charsWritten) {
2668            str[charsWritten++] = '-';
2669        }
2670        memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2671    }
2672}
2673
2674/* static */ inline bool assignLocaleComponent(ResTable_config* config,
2675        const char* start, size_t size) {
2676
2677  switch (size) {
2678       case 0:
2679           return false;
2680       case 2:
2681       case 3:
2682           config->language[0] ? config->packRegion(start) : config->packLanguage(start);
2683           break;
2684       case 4:
2685           config->localeScript[0] = toupper(start[0]);
2686           for (size_t i = 1; i < 4; ++i) {
2687               config->localeScript[i] = tolower(start[i]);
2688           }
2689           break;
2690       case 5:
2691       case 6:
2692       case 7:
2693       case 8:
2694           for (size_t i = 0; i < size; ++i) {
2695               config->localeVariant[i] = tolower(start[i]);
2696           }
2697           break;
2698       default:
2699           return false;
2700  }
2701
2702  return true;
2703}
2704
2705void ResTable_config::setBcp47Locale(const char* in) {
2706    locale = 0;
2707    memset(localeScript, 0, sizeof(localeScript));
2708    memset(localeVariant, 0, sizeof(localeVariant));
2709
2710    const char* separator = in;
2711    const char* start = in;
2712    while ((separator = strchr(start, '-')) != NULL) {
2713        const size_t size = separator - start;
2714        if (!assignLocaleComponent(this, start, size)) {
2715            fprintf(stderr, "Invalid BCP-47 locale string: %s", in);
2716        }
2717
2718        start = (separator + 1);
2719    }
2720
2721    const size_t size = in + strlen(in) - start;
2722    assignLocaleComponent(this, start, size);
2723}
2724
2725String8 ResTable_config::toString() const {
2726    String8 res;
2727
2728    if (mcc != 0) {
2729        if (res.size() > 0) res.append("-");
2730        res.appendFormat("mcc%d", dtohs(mcc));
2731    }
2732    if (mnc != 0) {
2733        if (res.size() > 0) res.append("-");
2734        res.appendFormat("mnc%d", dtohs(mnc));
2735    }
2736
2737    appendDirLocale(res);
2738
2739    if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2740        if (res.size() > 0) res.append("-");
2741        switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2742            case ResTable_config::LAYOUTDIR_LTR:
2743                res.append("ldltr");
2744                break;
2745            case ResTable_config::LAYOUTDIR_RTL:
2746                res.append("ldrtl");
2747                break;
2748            default:
2749                res.appendFormat("layoutDir=%d",
2750                        dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2751                break;
2752        }
2753    }
2754    if (smallestScreenWidthDp != 0) {
2755        if (res.size() > 0) res.append("-");
2756        res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2757    }
2758    if (screenWidthDp != 0) {
2759        if (res.size() > 0) res.append("-");
2760        res.appendFormat("w%ddp", dtohs(screenWidthDp));
2761    }
2762    if (screenHeightDp != 0) {
2763        if (res.size() > 0) res.append("-");
2764        res.appendFormat("h%ddp", dtohs(screenHeightDp));
2765    }
2766    if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2767        if (res.size() > 0) res.append("-");
2768        switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2769            case ResTable_config::SCREENSIZE_SMALL:
2770                res.append("small");
2771                break;
2772            case ResTable_config::SCREENSIZE_NORMAL:
2773                res.append("normal");
2774                break;
2775            case ResTable_config::SCREENSIZE_LARGE:
2776                res.append("large");
2777                break;
2778            case ResTable_config::SCREENSIZE_XLARGE:
2779                res.append("xlarge");
2780                break;
2781            default:
2782                res.appendFormat("screenLayoutSize=%d",
2783                        dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2784                break;
2785        }
2786    }
2787    if ((screenLayout&MASK_SCREENLONG) != 0) {
2788        if (res.size() > 0) res.append("-");
2789        switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2790            case ResTable_config::SCREENLONG_NO:
2791                res.append("notlong");
2792                break;
2793            case ResTable_config::SCREENLONG_YES:
2794                res.append("long");
2795                break;
2796            default:
2797                res.appendFormat("screenLayoutLong=%d",
2798                        dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2799                break;
2800        }
2801    }
2802    if ((screenLayout2&MASK_SCREENROUND) != 0) {
2803        if (res.size() > 0) res.append("-");
2804        switch (screenLayout2&MASK_SCREENROUND) {
2805            case SCREENROUND_NO:
2806                res.append("notround");
2807                break;
2808            case SCREENROUND_YES:
2809                res.append("round");
2810                break;
2811            default:
2812                res.appendFormat("screenRound=%d", dtohs(screenLayout2&MASK_SCREENROUND));
2813                break;
2814        }
2815    }
2816    if (orientation != ORIENTATION_ANY) {
2817        if (res.size() > 0) res.append("-");
2818        switch (orientation) {
2819            case ResTable_config::ORIENTATION_PORT:
2820                res.append("port");
2821                break;
2822            case ResTable_config::ORIENTATION_LAND:
2823                res.append("land");
2824                break;
2825            case ResTable_config::ORIENTATION_SQUARE:
2826                res.append("square");
2827                break;
2828            default:
2829                res.appendFormat("orientation=%d", dtohs(orientation));
2830                break;
2831        }
2832    }
2833    if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2834        if (res.size() > 0) res.append("-");
2835        switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2836            case ResTable_config::UI_MODE_TYPE_DESK:
2837                res.append("desk");
2838                break;
2839            case ResTable_config::UI_MODE_TYPE_CAR:
2840                res.append("car");
2841                break;
2842            case ResTable_config::UI_MODE_TYPE_TELEVISION:
2843                res.append("television");
2844                break;
2845            case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2846                res.append("appliance");
2847                break;
2848            case ResTable_config::UI_MODE_TYPE_WATCH:
2849                res.append("watch");
2850                break;
2851            default:
2852                res.appendFormat("uiModeType=%d",
2853                        dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2854                break;
2855        }
2856    }
2857    if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2858        if (res.size() > 0) res.append("-");
2859        switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2860            case ResTable_config::UI_MODE_NIGHT_NO:
2861                res.append("notnight");
2862                break;
2863            case ResTable_config::UI_MODE_NIGHT_YES:
2864                res.append("night");
2865                break;
2866            default:
2867                res.appendFormat("uiModeNight=%d",
2868                        dtohs(uiMode&MASK_UI_MODE_NIGHT));
2869                break;
2870        }
2871    }
2872    if (density != DENSITY_DEFAULT) {
2873        if (res.size() > 0) res.append("-");
2874        switch (density) {
2875            case ResTable_config::DENSITY_LOW:
2876                res.append("ldpi");
2877                break;
2878            case ResTable_config::DENSITY_MEDIUM:
2879                res.append("mdpi");
2880                break;
2881            case ResTable_config::DENSITY_TV:
2882                res.append("tvdpi");
2883                break;
2884            case ResTable_config::DENSITY_HIGH:
2885                res.append("hdpi");
2886                break;
2887            case ResTable_config::DENSITY_XHIGH:
2888                res.append("xhdpi");
2889                break;
2890            case ResTable_config::DENSITY_XXHIGH:
2891                res.append("xxhdpi");
2892                break;
2893            case ResTable_config::DENSITY_XXXHIGH:
2894                res.append("xxxhdpi");
2895                break;
2896            case ResTable_config::DENSITY_NONE:
2897                res.append("nodpi");
2898                break;
2899            case ResTable_config::DENSITY_ANY:
2900                res.append("anydpi");
2901                break;
2902            default:
2903                res.appendFormat("%ddpi", dtohs(density));
2904                break;
2905        }
2906    }
2907    if (touchscreen != TOUCHSCREEN_ANY) {
2908        if (res.size() > 0) res.append("-");
2909        switch (touchscreen) {
2910            case ResTable_config::TOUCHSCREEN_NOTOUCH:
2911                res.append("notouch");
2912                break;
2913            case ResTable_config::TOUCHSCREEN_FINGER:
2914                res.append("finger");
2915                break;
2916            case ResTable_config::TOUCHSCREEN_STYLUS:
2917                res.append("stylus");
2918                break;
2919            default:
2920                res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2921                break;
2922        }
2923    }
2924    if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2925        if (res.size() > 0) res.append("-");
2926        switch (inputFlags&MASK_KEYSHIDDEN) {
2927            case ResTable_config::KEYSHIDDEN_NO:
2928                res.append("keysexposed");
2929                break;
2930            case ResTable_config::KEYSHIDDEN_YES:
2931                res.append("keyshidden");
2932                break;
2933            case ResTable_config::KEYSHIDDEN_SOFT:
2934                res.append("keyssoft");
2935                break;
2936        }
2937    }
2938    if (keyboard != KEYBOARD_ANY) {
2939        if (res.size() > 0) res.append("-");
2940        switch (keyboard) {
2941            case ResTable_config::KEYBOARD_NOKEYS:
2942                res.append("nokeys");
2943                break;
2944            case ResTable_config::KEYBOARD_QWERTY:
2945                res.append("qwerty");
2946                break;
2947            case ResTable_config::KEYBOARD_12KEY:
2948                res.append("12key");
2949                break;
2950            default:
2951                res.appendFormat("keyboard=%d", dtohs(keyboard));
2952                break;
2953        }
2954    }
2955    if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2956        if (res.size() > 0) res.append("-");
2957        switch (inputFlags&MASK_NAVHIDDEN) {
2958            case ResTable_config::NAVHIDDEN_NO:
2959                res.append("navexposed");
2960                break;
2961            case ResTable_config::NAVHIDDEN_YES:
2962                res.append("navhidden");
2963                break;
2964            default:
2965                res.appendFormat("inputFlagsNavHidden=%d",
2966                        dtohs(inputFlags&MASK_NAVHIDDEN));
2967                break;
2968        }
2969    }
2970    if (navigation != NAVIGATION_ANY) {
2971        if (res.size() > 0) res.append("-");
2972        switch (navigation) {
2973            case ResTable_config::NAVIGATION_NONAV:
2974                res.append("nonav");
2975                break;
2976            case ResTable_config::NAVIGATION_DPAD:
2977                res.append("dpad");
2978                break;
2979            case ResTable_config::NAVIGATION_TRACKBALL:
2980                res.append("trackball");
2981                break;
2982            case ResTable_config::NAVIGATION_WHEEL:
2983                res.append("wheel");
2984                break;
2985            default:
2986                res.appendFormat("navigation=%d", dtohs(navigation));
2987                break;
2988        }
2989    }
2990    if (screenSize != 0) {
2991        if (res.size() > 0) res.append("-");
2992        res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2993    }
2994    if (version != 0) {
2995        if (res.size() > 0) res.append("-");
2996        res.appendFormat("v%d", dtohs(sdkVersion));
2997        if (minorVersion != 0) {
2998            res.appendFormat(".%d", dtohs(minorVersion));
2999        }
3000    }
3001
3002    return res;
3003}
3004
3005// --------------------------------------------------------------------
3006// --------------------------------------------------------------------
3007// --------------------------------------------------------------------
3008
3009struct ResTable::Header
3010{
3011    explicit Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
3012        resourceIDMap(NULL), resourceIDMapSize(0) { }
3013
3014    ~Header()
3015    {
3016        free(resourceIDMap);
3017    }
3018
3019    const ResTable* const           owner;
3020    void*                           ownedData;
3021    const ResTable_header*          header;
3022    size_t                          size;
3023    const uint8_t*                  dataEnd;
3024    size_t                          index;
3025    int32_t                         cookie;
3026
3027    ResStringPool                   values;
3028    uint32_t*                       resourceIDMap;
3029    size_t                          resourceIDMapSize;
3030};
3031
3032struct ResTable::Entry {
3033    ResTable_config config;
3034    const ResTable_entry* entry;
3035    const ResTable_type* type;
3036    uint32_t specFlags;
3037    const Package* package;
3038
3039    StringPoolRef typeStr;
3040    StringPoolRef keyStr;
3041};
3042
3043struct ResTable::Type
3044{
3045    Type(const Header* _header, const Package* _package, size_t count)
3046        : header(_header), package(_package), entryCount(count),
3047          typeSpec(NULL), typeSpecFlags(NULL) { }
3048    const Header* const             header;
3049    const Package* const            package;
3050    const size_t                    entryCount;
3051    const ResTable_typeSpec*        typeSpec;
3052    const uint32_t*                 typeSpecFlags;
3053    IdmapEntries                    idmapEntries;
3054    Vector<const ResTable_type*>    configs;
3055};
3056
3057struct ResTable::Package
3058{
3059    Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
3060        : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
3061        if (dtohs(package->header.headerSize) == sizeof(package)) {
3062            // The package structure is the same size as the definition.
3063            // This means it contains the typeIdOffset field.
3064            typeIdOffset = package->typeIdOffset;
3065        }
3066    }
3067
3068    const ResTable* const           owner;
3069    const Header* const             header;
3070    const ResTable_package* const   package;
3071
3072    ResStringPool                   typeStrings;
3073    ResStringPool                   keyStrings;
3074
3075    size_t                          typeIdOffset;
3076};
3077
3078// A group of objects describing a particular resource package.
3079// The first in 'package' is always the root object (from the resource
3080// table that defined the package); the ones after are skins on top of it.
3081struct ResTable::PackageGroup
3082{
3083    PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
3084        : owner(_owner)
3085        , name(_name)
3086        , id(_id)
3087        , largestTypeId(0)
3088        , bags(NULL)
3089        , dynamicRefTable(static_cast<uint8_t>(_id))
3090    { }
3091
3092    ~PackageGroup() {
3093        clearBagCache();
3094        const size_t numTypes = types.size();
3095        for (size_t i = 0; i < numTypes; i++) {
3096            const TypeList& typeList = types[i];
3097            const size_t numInnerTypes = typeList.size();
3098            for (size_t j = 0; j < numInnerTypes; j++) {
3099                if (typeList[j]->package->owner == owner) {
3100                    delete typeList[j];
3101                }
3102            }
3103        }
3104
3105        const size_t N = packages.size();
3106        for (size_t i=0; i<N; i++) {
3107            Package* pkg = packages[i];
3108            if (pkg->owner == owner) {
3109                delete pkg;
3110            }
3111        }
3112    }
3113
3114    void clearBagCache() {
3115        if (bags) {
3116            if (kDebugTableNoisy) {
3117                printf("bags=%p\n", bags);
3118            }
3119            for (size_t i = 0; i < bags->size(); i++) {
3120                if (kDebugTableNoisy) {
3121                    printf("type=%zu\n", i);
3122                }
3123                const TypeList& typeList = types[i];
3124                if (!typeList.isEmpty()) {
3125                    bag_set** typeBags = bags->get(i);
3126                    if (kDebugTableNoisy) {
3127                        printf("typeBags=%p\n", typeBags);
3128                    }
3129                    if (typeBags) {
3130                        const size_t N = typeList[0]->entryCount;
3131                        if (kDebugTableNoisy) {
3132                            printf("type->entryCount=%zu\n", N);
3133                        }
3134                        for (size_t j = 0; j < N; j++) {
3135                            if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
3136                                free(typeBags[j]);
3137                        }
3138                        free(typeBags);
3139                    }
3140                }
3141            }
3142            delete bags;
3143            bags = NULL;
3144        }
3145    }
3146
3147    ssize_t findType16(const char16_t* type, size_t len) const {
3148        const size_t N = packages.size();
3149        for (size_t i = 0; i < N; i++) {
3150            ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
3151            if (index >= 0) {
3152                return index + packages[i]->typeIdOffset;
3153            }
3154        }
3155        return -1;
3156    }
3157
3158    const ResTable* const           owner;
3159    String16 const                  name;
3160    uint32_t const                  id;
3161
3162    // This is mainly used to keep track of the loaded packages
3163    // and to clean them up properly. Accessing resources happens from
3164    // the 'types' array.
3165    Vector<Package*>                packages;
3166
3167    ByteBucketArray<TypeList>       types;
3168
3169    uint8_t                         largestTypeId;
3170
3171    // Computed attribute bags, first indexed by the type and second
3172    // by the entry in that type.
3173    ByteBucketArray<bag_set**>*     bags;
3174
3175    // The table mapping dynamic references to resolved references for
3176    // this package group.
3177    // TODO: We may be able to support dynamic references in overlays
3178    // by having these tables in a per-package scope rather than
3179    // per-package-group.
3180    DynamicRefTable                 dynamicRefTable;
3181};
3182
3183struct ResTable::bag_set
3184{
3185    size_t numAttrs;    // number in array
3186    size_t availAttrs;  // total space in array
3187    uint32_t typeSpecFlags;
3188    // Followed by 'numAttr' bag_entry structures.
3189};
3190
3191ResTable::Theme::Theme(const ResTable& table)
3192    : mTable(table)
3193    , mTypeSpecFlags(0)
3194{
3195    memset(mPackages, 0, sizeof(mPackages));
3196}
3197
3198ResTable::Theme::~Theme()
3199{
3200    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3201        package_info* pi = mPackages[i];
3202        if (pi != NULL) {
3203            free_package(pi);
3204        }
3205    }
3206}
3207
3208void ResTable::Theme::free_package(package_info* pi)
3209{
3210    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3211        theme_entry* te = pi->types[j].entries;
3212        if (te != NULL) {
3213            free(te);
3214        }
3215    }
3216    free(pi);
3217}
3218
3219ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3220{
3221    package_info* newpi = (package_info*)malloc(sizeof(package_info));
3222    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3223        size_t cnt = pi->types[j].numEntries;
3224        newpi->types[j].numEntries = cnt;
3225        theme_entry* te = pi->types[j].entries;
3226        size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3227        if (te != NULL && (cnt < 0xFFFFFFFF-1) && (cnt < cnt_max)) {
3228            theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3229            newpi->types[j].entries = newte;
3230            memcpy(newte, te, cnt*sizeof(theme_entry));
3231        } else {
3232            newpi->types[j].entries = NULL;
3233        }
3234    }
3235    return newpi;
3236}
3237
3238status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3239{
3240    const bag_entry* bag;
3241    uint32_t bagTypeSpecFlags = 0;
3242    mTable.lock();
3243    const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3244    if (kDebugTableNoisy) {
3245        ALOGV("Applying style 0x%08x to theme %p, count=%zu", resID, this, N);
3246    }
3247    if (N < 0) {
3248        mTable.unlock();
3249        return N;
3250    }
3251
3252    mTypeSpecFlags |= bagTypeSpecFlags;
3253
3254    uint32_t curPackage = 0xffffffff;
3255    ssize_t curPackageIndex = 0;
3256    package_info* curPI = NULL;
3257    uint32_t curType = 0xffffffff;
3258    size_t numEntries = 0;
3259    theme_entry* curEntries = NULL;
3260
3261    const bag_entry* end = bag + N;
3262    while (bag < end) {
3263        const uint32_t attrRes = bag->map.name.ident;
3264        const uint32_t p = Res_GETPACKAGE(attrRes);
3265        const uint32_t t = Res_GETTYPE(attrRes);
3266        const uint32_t e = Res_GETENTRY(attrRes);
3267
3268        if (curPackage != p) {
3269            const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3270            if (pidx < 0) {
3271                ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3272                bag++;
3273                continue;
3274            }
3275            curPackage = p;
3276            curPackageIndex = pidx;
3277            curPI = mPackages[pidx];
3278            if (curPI == NULL) {
3279                curPI = (package_info*)malloc(sizeof(package_info));
3280                memset(curPI, 0, sizeof(*curPI));
3281                mPackages[pidx] = curPI;
3282            }
3283            curType = 0xffffffff;
3284        }
3285        if (curType != t) {
3286            if (t > Res_MAXTYPE) {
3287                ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3288                bag++;
3289                continue;
3290            }
3291            curType = t;
3292            curEntries = curPI->types[t].entries;
3293            if (curEntries == NULL) {
3294                PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3295                const TypeList& typeList = grp->types[t];
3296                size_t cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3297                size_t cnt_max = SIZE_MAX / sizeof(theme_entry);
3298                size_t buff_size = (cnt < cnt_max && cnt < 0xFFFFFFFF-1) ?
3299                                          cnt*sizeof(theme_entry) : 0;
3300                curEntries = (theme_entry*)malloc(buff_size);
3301                memset(curEntries, Res_value::TYPE_NULL, buff_size);
3302                curPI->types[t].numEntries = cnt;
3303                curPI->types[t].entries = curEntries;
3304            }
3305            numEntries = curPI->types[t].numEntries;
3306        }
3307        if (e >= numEntries) {
3308            ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3309            bag++;
3310            continue;
3311        }
3312        theme_entry* curEntry = curEntries + e;
3313        if (kDebugTableNoisy) {
3314            ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3315                    attrRes, bag->map.value.dataType, bag->map.value.data,
3316                    curEntry->value.dataType);
3317        }
3318        if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
3319            curEntry->stringBlock = bag->stringBlock;
3320            curEntry->typeSpecFlags |= bagTypeSpecFlags;
3321            curEntry->value = bag->map.value;
3322        }
3323
3324        bag++;
3325    }
3326
3327    mTable.unlock();
3328
3329    if (kDebugTableTheme) {
3330        ALOGI("Applying style 0x%08x (force=%d)  theme %p...\n", resID, force, this);
3331        dumpToLog();
3332    }
3333
3334    return NO_ERROR;
3335}
3336
3337status_t ResTable::Theme::setTo(const Theme& other)
3338{
3339    if (kDebugTableTheme) {
3340        ALOGI("Setting theme %p from theme %p...\n", this, &other);
3341        dumpToLog();
3342        other.dumpToLog();
3343    }
3344
3345    if (&mTable == &other.mTable) {
3346        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3347            if (mPackages[i] != NULL) {
3348                free_package(mPackages[i]);
3349            }
3350            if (other.mPackages[i] != NULL) {
3351                mPackages[i] = copy_package(other.mPackages[i]);
3352            } else {
3353                mPackages[i] = NULL;
3354            }
3355        }
3356    } else {
3357        // @todo: need to really implement this, not just copy
3358        // the system package (which is still wrong because it isn't
3359        // fixing up resource references).
3360        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3361            if (mPackages[i] != NULL) {
3362                free_package(mPackages[i]);
3363            }
3364            if (i == 0 && other.mPackages[i] != NULL) {
3365                mPackages[i] = copy_package(other.mPackages[i]);
3366            } else {
3367                mPackages[i] = NULL;
3368            }
3369        }
3370    }
3371
3372    mTypeSpecFlags = other.mTypeSpecFlags;
3373
3374    if (kDebugTableTheme) {
3375        ALOGI("Final theme:");
3376        dumpToLog();
3377    }
3378
3379    return NO_ERROR;
3380}
3381
3382status_t ResTable::Theme::clear()
3383{
3384    if (kDebugTableTheme) {
3385        ALOGI("Clearing theme %p...\n", this);
3386        dumpToLog();
3387    }
3388
3389    for (size_t i = 0; i < Res_MAXPACKAGE; i++) {
3390        if (mPackages[i] != NULL) {
3391            free_package(mPackages[i]);
3392            mPackages[i] = NULL;
3393        }
3394    }
3395
3396    mTypeSpecFlags = 0;
3397
3398    if (kDebugTableTheme) {
3399        ALOGI("Final theme:");
3400        dumpToLog();
3401    }
3402
3403    return NO_ERROR;
3404}
3405
3406ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3407        uint32_t* outTypeSpecFlags) const
3408{
3409    int cnt = 20;
3410
3411    if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3412
3413    do {
3414        const ssize_t p = mTable.getResourcePackageIndex(resID);
3415        const uint32_t t = Res_GETTYPE(resID);
3416        const uint32_t e = Res_GETENTRY(resID);
3417
3418        if (kDebugTableTheme) {
3419            ALOGI("Looking up attr 0x%08x in theme %p", resID, this);
3420        }
3421
3422        if (p >= 0) {
3423            const package_info* const pi = mPackages[p];
3424            if (kDebugTableTheme) {
3425                ALOGI("Found package: %p", pi);
3426            }
3427            if (pi != NULL) {
3428                if (kDebugTableTheme) {
3429                    ALOGI("Desired type index is %zd in avail %zu", t, Res_MAXTYPE + 1);
3430                }
3431                if (t <= Res_MAXTYPE) {
3432                    const type_info& ti = pi->types[t];
3433                    if (kDebugTableTheme) {
3434                        ALOGI("Desired entry index is %u in avail %zu", e, ti.numEntries);
3435                    }
3436                    if (e < ti.numEntries) {
3437                        const theme_entry& te = ti.entries[e];
3438                        if (outTypeSpecFlags != NULL) {
3439                            *outTypeSpecFlags |= te.typeSpecFlags;
3440                        }
3441                        if (kDebugTableTheme) {
3442                            ALOGI("Theme value: type=0x%x, data=0x%08x",
3443                                    te.value.dataType, te.value.data);
3444                        }
3445                        const uint8_t type = te.value.dataType;
3446                        if (type == Res_value::TYPE_ATTRIBUTE) {
3447                            if (cnt > 0) {
3448                                cnt--;
3449                                resID = te.value.data;
3450                                continue;
3451                            }
3452                            ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3453                            return BAD_INDEX;
3454                        } else if (type != Res_value::TYPE_NULL) {
3455                            *outValue = te.value;
3456                            return te.stringBlock;
3457                        }
3458                        return BAD_INDEX;
3459                    }
3460                }
3461            }
3462        }
3463        break;
3464
3465    } while (true);
3466
3467    return BAD_INDEX;
3468}
3469
3470ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3471        ssize_t blockIndex, uint32_t* outLastRef,
3472        uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3473{
3474    //printf("Resolving type=0x%x\n", inOutValue->dataType);
3475    if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3476        uint32_t newTypeSpecFlags;
3477        blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3478        if (kDebugTableTheme) {
3479            ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=0x%x\n",
3480                    (int)blockIndex, (int)inOutValue->dataType, inOutValue->data);
3481        }
3482        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3483        //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3484        if (blockIndex < 0) {
3485            return blockIndex;
3486        }
3487    }
3488    return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3489            inoutTypeSpecFlags, inoutConfig);
3490}
3491
3492uint32_t ResTable::Theme::getChangingConfigurations() const
3493{
3494    return mTypeSpecFlags;
3495}
3496
3497void ResTable::Theme::dumpToLog() const
3498{
3499    ALOGI("Theme %p:\n", this);
3500    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3501        package_info* pi = mPackages[i];
3502        if (pi == NULL) continue;
3503
3504        ALOGI("  Package #0x%02x:\n", (int)(i + 1));
3505        for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3506            type_info& ti = pi->types[j];
3507            if (ti.numEntries == 0) continue;
3508            ALOGI("    Type #0x%02x:\n", (int)(j + 1));
3509            for (size_t k = 0; k < ti.numEntries; k++) {
3510                const theme_entry& te = ti.entries[k];
3511                if (te.value.dataType == Res_value::TYPE_NULL) continue;
3512                ALOGI("      0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3513                     (int)Res_MAKEID(i, j, k),
3514                     te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3515            }
3516        }
3517    }
3518}
3519
3520ResTable::ResTable()
3521    : mError(NO_INIT), mNextPackageId(2)
3522{
3523    memset(&mParams, 0, sizeof(mParams));
3524    memset(mPackageMap, 0, sizeof(mPackageMap));
3525    if (kDebugTableSuperNoisy) {
3526        ALOGI("Creating ResTable %p\n", this);
3527    }
3528}
3529
3530ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3531    : mError(NO_INIT), mNextPackageId(2)
3532{
3533    memset(&mParams, 0, sizeof(mParams));
3534    memset(mPackageMap, 0, sizeof(mPackageMap));
3535    addInternal(data, size, NULL, 0, cookie, copyData);
3536    LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3537    if (kDebugTableSuperNoisy) {
3538        ALOGI("Creating ResTable %p\n", this);
3539    }
3540}
3541
3542ResTable::~ResTable()
3543{
3544    if (kDebugTableSuperNoisy) {
3545        ALOGI("Destroying ResTable in %p\n", this);
3546    }
3547    uninit();
3548}
3549
3550inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3551{
3552    return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3553}
3554
3555status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3556    return addInternal(data, size, NULL, 0, cookie, copyData);
3557}
3558
3559status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3560        const int32_t cookie, bool copyData) {
3561    return addInternal(data, size, idmapData, idmapDataSize, cookie, copyData);
3562}
3563
3564status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
3565    const void* data = asset->getBuffer(true);
3566    if (data == NULL) {
3567        ALOGW("Unable to get buffer of resource asset file");
3568        return UNKNOWN_ERROR;
3569    }
3570
3571    return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, 0, cookie, copyData);
3572}
3573
3574status_t ResTable::add(Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData) {
3575    const void* data = asset->getBuffer(true);
3576    if (data == NULL) {
3577        ALOGW("Unable to get buffer of resource asset file");
3578        return UNKNOWN_ERROR;
3579    }
3580
3581    size_t idmapSize = 0;
3582    const void* idmapData = NULL;
3583    if (idmapAsset != NULL) {
3584        idmapData = idmapAsset->getBuffer(true);
3585        if (idmapData == NULL) {
3586            ALOGW("Unable to get buffer of idmap asset file");
3587            return UNKNOWN_ERROR;
3588        }
3589        idmapSize = static_cast<size_t>(idmapAsset->getLength());
3590    }
3591
3592    return addInternal(data, static_cast<size_t>(asset->getLength()),
3593            idmapData, idmapSize, cookie, copyData);
3594}
3595
3596status_t ResTable::add(ResTable* src)
3597{
3598    mError = src->mError;
3599
3600    for (size_t i=0; i<src->mHeaders.size(); i++) {
3601        mHeaders.add(src->mHeaders[i]);
3602    }
3603
3604    for (size_t i=0; i<src->mPackageGroups.size(); i++) {
3605        PackageGroup* srcPg = src->mPackageGroups[i];
3606        PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
3607        for (size_t j=0; j<srcPg->packages.size(); j++) {
3608            pg->packages.add(srcPg->packages[j]);
3609        }
3610
3611        for (size_t j = 0; j < srcPg->types.size(); j++) {
3612            if (srcPg->types[j].isEmpty()) {
3613                continue;
3614            }
3615
3616            TypeList& typeList = pg->types.editItemAt(j);
3617            typeList.appendVector(srcPg->types[j]);
3618        }
3619        pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
3620        pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
3621        mPackageGroups.add(pg);
3622    }
3623
3624    memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
3625
3626    return mError;
3627}
3628
3629status_t ResTable::addEmpty(const int32_t cookie) {
3630    Header* header = new Header(this);
3631    header->index = mHeaders.size();
3632    header->cookie = cookie;
3633    header->values.setToEmpty();
3634    header->ownedData = calloc(1, sizeof(ResTable_header));
3635
3636    ResTable_header* resHeader = (ResTable_header*) header->ownedData;
3637    resHeader->header.type = RES_TABLE_TYPE;
3638    resHeader->header.headerSize = sizeof(ResTable_header);
3639    resHeader->header.size = sizeof(ResTable_header);
3640
3641    header->header = (const ResTable_header*) resHeader;
3642    mHeaders.add(header);
3643    return (mError=NO_ERROR);
3644}
3645
3646status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
3647        const int32_t cookie, bool copyData)
3648{
3649    if (!data) {
3650        return NO_ERROR;
3651    }
3652
3653    if (dataSize < sizeof(ResTable_header)) {
3654        ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
3655                (int) dataSize, (int) sizeof(ResTable_header));
3656        return UNKNOWN_ERROR;
3657    }
3658
3659    Header* header = new Header(this);
3660    header->index = mHeaders.size();
3661    header->cookie = cookie;
3662    if (idmapData != NULL) {
3663        header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
3664        if (header->resourceIDMap == NULL) {
3665            delete header;
3666            return (mError = NO_MEMORY);
3667        }
3668        memcpy(header->resourceIDMap, idmapData, idmapDataSize);
3669        header->resourceIDMapSize = idmapDataSize;
3670    }
3671    mHeaders.add(header);
3672
3673    const bool notDeviceEndian = htods(0xf0) != 0xf0;
3674
3675    if (kDebugLoadTableNoisy) {
3676        ALOGV("Adding resources to ResTable: data=%p, size=%zu, cookie=%d, copy=%d "
3677                "idmap=%p\n", data, dataSize, cookie, copyData, idmapData);
3678    }
3679
3680    if (copyData || notDeviceEndian) {
3681        header->ownedData = malloc(dataSize);
3682        if (header->ownedData == NULL) {
3683            return (mError=NO_MEMORY);
3684        }
3685        memcpy(header->ownedData, data, dataSize);
3686        data = header->ownedData;
3687    }
3688
3689    header->header = (const ResTable_header*)data;
3690    header->size = dtohl(header->header->header.size);
3691    if (kDebugLoadTableSuperNoisy) {
3692        ALOGI("Got size %zu, again size 0x%x, raw size 0x%x\n", header->size,
3693                dtohl(header->header->header.size), header->header->header.size);
3694    }
3695    if (kDebugLoadTableNoisy) {
3696        ALOGV("Loading ResTable @%p:\n", header->header);
3697    }
3698    if (dtohs(header->header->header.headerSize) > header->size
3699            || header->size > dataSize) {
3700        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
3701             (int)dtohs(header->header->header.headerSize),
3702             (int)header->size, (int)dataSize);
3703        return (mError=BAD_TYPE);
3704    }
3705    if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
3706        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
3707             (int)dtohs(header->header->header.headerSize),
3708             (int)header->size);
3709        return (mError=BAD_TYPE);
3710    }
3711    header->dataEnd = ((const uint8_t*)header->header) + header->size;
3712
3713    // Iterate through all chunks.
3714    size_t curPackage = 0;
3715
3716    const ResChunk_header* chunk =
3717        (const ResChunk_header*)(((const uint8_t*)header->header)
3718                                 + dtohs(header->header->header.headerSize));
3719    while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
3720           ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
3721        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
3722        if (err != NO_ERROR) {
3723            return (mError=err);
3724        }
3725        if (kDebugTableNoisy) {
3726            ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
3727                    dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
3728                    (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3729        }
3730        const size_t csize = dtohl(chunk->size);
3731        const uint16_t ctype = dtohs(chunk->type);
3732        if (ctype == RES_STRING_POOL_TYPE) {
3733            if (header->values.getError() != NO_ERROR) {
3734                // Only use the first string chunk; ignore any others that
3735                // may appear.
3736                status_t err = header->values.setTo(chunk, csize);
3737                if (err != NO_ERROR) {
3738                    return (mError=err);
3739                }
3740            } else {
3741                ALOGW("Multiple string chunks found in resource table.");
3742            }
3743        } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
3744            if (curPackage >= dtohl(header->header->packageCount)) {
3745                ALOGW("More package chunks were found than the %d declared in the header.",
3746                     dtohl(header->header->packageCount));
3747                return (mError=BAD_TYPE);
3748            }
3749
3750            if (parsePackage((ResTable_package*)chunk, header) != NO_ERROR) {
3751                return mError;
3752            }
3753            curPackage++;
3754        } else {
3755            ALOGW("Unknown chunk type 0x%x in table at %p.\n",
3756                 ctype,
3757                 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3758        }
3759        chunk = (const ResChunk_header*)
3760            (((const uint8_t*)chunk) + csize);
3761    }
3762
3763    if (curPackage < dtohl(header->header->packageCount)) {
3764        ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
3765             (int)curPackage, dtohl(header->header->packageCount));
3766        return (mError=BAD_TYPE);
3767    }
3768    mError = header->values.getError();
3769    if (mError != NO_ERROR) {
3770        ALOGW("No string values found in resource table!");
3771    }
3772
3773    if (kDebugTableNoisy) {
3774        ALOGV("Returning from add with mError=%d\n", mError);
3775    }
3776    return mError;
3777}
3778
3779status_t ResTable::getError() const
3780{
3781    return mError;
3782}
3783
3784void ResTable::uninit()
3785{
3786    mError = NO_INIT;
3787    size_t N = mPackageGroups.size();
3788    for (size_t i=0; i<N; i++) {
3789        PackageGroup* g = mPackageGroups[i];
3790        delete g;
3791    }
3792    N = mHeaders.size();
3793    for (size_t i=0; i<N; i++) {
3794        Header* header = mHeaders[i];
3795        if (header->owner == this) {
3796            if (header->ownedData) {
3797                free(header->ownedData);
3798            }
3799            delete header;
3800        }
3801    }
3802
3803    mPackageGroups.clear();
3804    mHeaders.clear();
3805}
3806
3807bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
3808{
3809    if (mError != NO_ERROR) {
3810        return false;
3811    }
3812
3813    const ssize_t p = getResourcePackageIndex(resID);
3814    const int t = Res_GETTYPE(resID);
3815    const int e = Res_GETENTRY(resID);
3816
3817    if (p < 0) {
3818        if (Res_GETPACKAGE(resID)+1 == 0) {
3819            ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
3820        } else {
3821            ALOGW("No known package when getting name for resource number 0x%08x", resID);
3822        }
3823        return false;
3824    }
3825    if (t < 0) {
3826        ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
3827        return false;
3828    }
3829
3830    const PackageGroup* const grp = mPackageGroups[p];
3831    if (grp == NULL) {
3832        ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
3833        return false;
3834    }
3835
3836    Entry entry;
3837    status_t err = getEntry(grp, t, e, NULL, &entry);
3838    if (err != NO_ERROR) {
3839        return false;
3840    }
3841
3842    outName->package = grp->name.string();
3843    outName->packageLen = grp->name.size();
3844    if (allowUtf8) {
3845        outName->type8 = entry.typeStr.string8(&outName->typeLen);
3846        outName->name8 = entry.keyStr.string8(&outName->nameLen);
3847    } else {
3848        outName->type8 = NULL;
3849        outName->name8 = NULL;
3850    }
3851    if (outName->type8 == NULL) {
3852        outName->type = entry.typeStr.string16(&outName->typeLen);
3853        // If we have a bad index for some reason, we should abort.
3854        if (outName->type == NULL) {
3855            return false;
3856        }
3857    }
3858    if (outName->name8 == NULL) {
3859        outName->name = entry.keyStr.string16(&outName->nameLen);
3860        // If we have a bad index for some reason, we should abort.
3861        if (outName->name == NULL) {
3862            return false;
3863        }
3864    }
3865
3866    return true;
3867}
3868
3869ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
3870        uint32_t* outSpecFlags, ResTable_config* outConfig) const
3871{
3872    if (mError != NO_ERROR) {
3873        return mError;
3874    }
3875
3876    const ssize_t p = getResourcePackageIndex(resID);
3877    const int t = Res_GETTYPE(resID);
3878    const int e = Res_GETENTRY(resID);
3879
3880    if (p < 0) {
3881        if (Res_GETPACKAGE(resID)+1 == 0) {
3882            ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
3883        } else {
3884            ALOGW("No known package when getting value for resource number 0x%08x", resID);
3885        }
3886        return BAD_INDEX;
3887    }
3888    if (t < 0) {
3889        ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
3890        return BAD_INDEX;
3891    }
3892
3893    const PackageGroup* const grp = mPackageGroups[p];
3894    if (grp == NULL) {
3895        ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
3896        return BAD_INDEX;
3897    }
3898
3899    // Allow overriding density
3900    ResTable_config desiredConfig = mParams;
3901    if (density > 0) {
3902        desiredConfig.density = density;
3903    }
3904
3905    Entry entry;
3906    status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
3907    if (err != NO_ERROR) {
3908        // Only log the failure when we're not running on the host as
3909        // part of a tool. The caller will do its own logging.
3910#ifndef STATIC_ANDROIDFW_FOR_TOOLS
3911        ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
3912                resID, t, e, err);
3913#endif
3914        return err;
3915    }
3916
3917    if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
3918        if (!mayBeBag) {
3919            ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
3920        }
3921        return BAD_VALUE;
3922    }
3923
3924    const Res_value* value = reinterpret_cast<const Res_value*>(
3925            reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
3926
3927    outValue->size = dtohs(value->size);
3928    outValue->res0 = value->res0;
3929    outValue->dataType = value->dataType;
3930    outValue->data = dtohl(value->data);
3931
3932    // The reference may be pointing to a resource in a shared library. These
3933    // references have build-time generated package IDs. These ids may not match
3934    // the actual package IDs of the corresponding packages in this ResTable.
3935    // We need to fix the package ID based on a mapping.
3936    if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
3937        ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
3938        return BAD_VALUE;
3939    }
3940
3941    if (kDebugTableNoisy) {
3942        size_t len;
3943        printf("Found value: pkg=%zu, type=%d, str=%s, int=%d\n",
3944                entry.package->header->index,
3945                outValue->dataType,
3946                outValue->dataType == Res_value::TYPE_STRING ?
3947                    String8(entry.package->header->values.stringAt(outValue->data, &len)).string() :
3948                    "",
3949                outValue->data);
3950    }
3951
3952    if (outSpecFlags != NULL) {
3953        *outSpecFlags = entry.specFlags;
3954    }
3955
3956    if (outConfig != NULL) {
3957        *outConfig = entry.config;
3958    }
3959
3960    return entry.package->header->index;
3961}
3962
3963ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3964        uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3965        ResTable_config* outConfig) const
3966{
3967    int count=0;
3968    while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
3969            && value->data != 0 && count < 20) {
3970        if (outLastRef) *outLastRef = value->data;
3971        uint32_t newFlags = 0;
3972        const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3973                outConfig);
3974        if (newIndex == BAD_INDEX) {
3975            return BAD_INDEX;
3976        }
3977        if (kDebugTableTheme) {
3978            ALOGI("Resolving reference 0x%x: newIndex=%d, type=0x%x, data=0x%x\n",
3979                    value->data, (int)newIndex, (int)value->dataType, value->data);
3980        }
3981        //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3982        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3983        if (newIndex < 0) {
3984            // This can fail if the resource being referenced is a style...
3985            // in this case, just return the reference, and expect the
3986            // caller to deal with.
3987            return blockIndex;
3988        }
3989        blockIndex = newIndex;
3990        count++;
3991    }
3992    return blockIndex;
3993}
3994
3995const char16_t* ResTable::valueToString(
3996    const Res_value* value, size_t stringBlock,
3997    char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
3998{
3999    if (!value) {
4000        return NULL;
4001    }
4002    if (value->dataType == value->TYPE_STRING) {
4003        return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
4004    }
4005    // XXX do int to string conversions.
4006    return NULL;
4007}
4008
4009ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
4010{
4011    mLock.lock();
4012    ssize_t err = getBagLocked(resID, outBag);
4013    if (err < NO_ERROR) {
4014        //printf("*** get failed!  unlocking\n");
4015        mLock.unlock();
4016    }
4017    return err;
4018}
4019
4020void ResTable::unlockBag(const bag_entry* /*bag*/) const
4021{
4022    //printf("<<< unlockBag %p\n", this);
4023    mLock.unlock();
4024}
4025
4026void ResTable::lock() const
4027{
4028    mLock.lock();
4029}
4030
4031void ResTable::unlock() const
4032{
4033    mLock.unlock();
4034}
4035
4036ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
4037        uint32_t* outTypeSpecFlags) const
4038{
4039    if (mError != NO_ERROR) {
4040        return mError;
4041    }
4042
4043    const ssize_t p = getResourcePackageIndex(resID);
4044    const int t = Res_GETTYPE(resID);
4045    const int e = Res_GETENTRY(resID);
4046
4047    if (p < 0) {
4048        ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
4049        return BAD_INDEX;
4050    }
4051    if (t < 0) {
4052        ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
4053        return BAD_INDEX;
4054    }
4055
4056    //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
4057    PackageGroup* const grp = mPackageGroups[p];
4058    if (grp == NULL) {
4059        ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
4060        return BAD_INDEX;
4061    }
4062
4063    const TypeList& typeConfigs = grp->types[t];
4064    if (typeConfigs.isEmpty()) {
4065        ALOGW("Type identifier 0x%x does not exist.", t+1);
4066        return BAD_INDEX;
4067    }
4068
4069    const size_t NENTRY = typeConfigs[0]->entryCount;
4070    if (e >= (int)NENTRY) {
4071        ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
4072             e, (int)typeConfigs[0]->entryCount);
4073        return BAD_INDEX;
4074    }
4075
4076    // First see if we've already computed this bag...
4077    if (grp->bags) {
4078        bag_set** typeSet = grp->bags->get(t);
4079        if (typeSet) {
4080            bag_set* set = typeSet[e];
4081            if (set) {
4082                if (set != (bag_set*)0xFFFFFFFF) {
4083                    if (outTypeSpecFlags != NULL) {
4084                        *outTypeSpecFlags = set->typeSpecFlags;
4085                    }
4086                    *outBag = (bag_entry*)(set+1);
4087                    if (kDebugTableSuperNoisy) {
4088                        ALOGI("Found existing bag for: 0x%x\n", resID);
4089                    }
4090                    return set->numAttrs;
4091                }
4092                ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
4093                     resID);
4094                return BAD_INDEX;
4095            }
4096        }
4097    }
4098
4099    // Bag not found, we need to compute it!
4100    if (!grp->bags) {
4101        grp->bags = new ByteBucketArray<bag_set**>();
4102        if (!grp->bags) return NO_MEMORY;
4103    }
4104
4105    bag_set** typeSet = grp->bags->get(t);
4106    if (!typeSet) {
4107        typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
4108        if (!typeSet) return NO_MEMORY;
4109        grp->bags->set(t, typeSet);
4110    }
4111
4112    // Mark that we are currently working on this one.
4113    typeSet[e] = (bag_set*)0xFFFFFFFF;
4114
4115    if (kDebugTableNoisy) {
4116        ALOGI("Building bag: %x\n", resID);
4117    }
4118
4119    // Now collect all bag attributes
4120    Entry entry;
4121    status_t err = getEntry(grp, t, e, &mParams, &entry);
4122    if (err != NO_ERROR) {
4123        return err;
4124    }
4125
4126    const uint16_t entrySize = dtohs(entry.entry->size);
4127    const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
4128        ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
4129    const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
4130        ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
4131
4132    size_t N = count;
4133
4134    if (kDebugTableNoisy) {
4135        ALOGI("Found map: size=%x parent=%x count=%d\n", entrySize, parent, count);
4136
4137    // If this map inherits from another, we need to start
4138    // with its parent's values.  Otherwise start out empty.
4139        ALOGI("Creating new bag, entrySize=0x%08x, parent=0x%08x\n", entrySize, parent);
4140    }
4141
4142    // This is what we are building.
4143    bag_set* set = NULL;
4144
4145    if (parent) {
4146        uint32_t resolvedParent = parent;
4147
4148        // Bags encode a parent reference without using the standard
4149        // Res_value structure. That means we must always try to
4150        // resolve a parent reference in case it is actually a
4151        // TYPE_DYNAMIC_REFERENCE.
4152        status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
4153        if (err != NO_ERROR) {
4154            ALOGE("Failed resolving bag parent id 0x%08x", parent);
4155            return UNKNOWN_ERROR;
4156        }
4157
4158        const bag_entry* parentBag;
4159        uint32_t parentTypeSpecFlags = 0;
4160        const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
4161        const size_t NT = ((NP >= 0) ? NP : 0) + N;
4162        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
4163        if (set == NULL) {
4164            return NO_MEMORY;
4165        }
4166        if (NP > 0) {
4167            memcpy(set+1, parentBag, NP*sizeof(bag_entry));
4168            set->numAttrs = NP;
4169            if (kDebugTableNoisy) {
4170                ALOGI("Initialized new bag with %zd inherited attributes.\n", NP);
4171            }
4172        } else {
4173            if (kDebugTableNoisy) {
4174                ALOGI("Initialized new bag with no inherited attributes.\n");
4175            }
4176            set->numAttrs = 0;
4177        }
4178        set->availAttrs = NT;
4179        set->typeSpecFlags = parentTypeSpecFlags;
4180    } else {
4181        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
4182        if (set == NULL) {
4183            return NO_MEMORY;
4184        }
4185        set->numAttrs = 0;
4186        set->availAttrs = N;
4187        set->typeSpecFlags = 0;
4188    }
4189
4190    set->typeSpecFlags |= entry.specFlags;
4191
4192    // Now merge in the new attributes...
4193    size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
4194        + dtohs(entry.entry->size);
4195    const ResTable_map* map;
4196    bag_entry* entries = (bag_entry*)(set+1);
4197    size_t curEntry = 0;
4198    uint32_t pos = 0;
4199    if (kDebugTableNoisy) {
4200        ALOGI("Starting with set %p, entries=%p, avail=%zu\n", set, entries, set->availAttrs);
4201    }
4202    while (pos < count) {
4203        if (kDebugTableNoisy) {
4204            ALOGI("Now at %p\n", (void*)curOff);
4205        }
4206
4207        if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
4208            ALOGW("ResTable_map at %d is beyond type chunk data %d",
4209                 (int)curOff, dtohl(entry.type->header.size));
4210            return BAD_TYPE;
4211        }
4212        map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
4213        N++;
4214
4215        uint32_t newName = htodl(map->name.ident);
4216        if (!Res_INTERNALID(newName)) {
4217            // Attributes don't have a resource id as the name. They specify
4218            // other data, which would be wrong to change via a lookup.
4219            if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
4220                ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
4221                        (int) curOff, (int) newName);
4222                return UNKNOWN_ERROR;
4223            }
4224        }
4225
4226        bool isInside;
4227        uint32_t oldName = 0;
4228        while ((isInside=(curEntry < set->numAttrs))
4229                && (oldName=entries[curEntry].map.name.ident) < newName) {
4230            if (kDebugTableNoisy) {
4231                ALOGI("#%zu: Keeping existing attribute: 0x%08x\n",
4232                        curEntry, entries[curEntry].map.name.ident);
4233            }
4234            curEntry++;
4235        }
4236
4237        if ((!isInside) || oldName != newName) {
4238            // This is a new attribute...  figure out what to do with it.
4239            if (set->numAttrs >= set->availAttrs) {
4240                // Need to alloc more memory...
4241                const size_t newAvail = set->availAttrs+N;
4242                set = (bag_set*)realloc(set,
4243                                        sizeof(bag_set)
4244                                        + sizeof(bag_entry)*newAvail);
4245                if (set == NULL) {
4246                    return NO_MEMORY;
4247                }
4248                set->availAttrs = newAvail;
4249                entries = (bag_entry*)(set+1);
4250                if (kDebugTableNoisy) {
4251                    ALOGI("Reallocated set %p, entries=%p, avail=%zu\n",
4252                            set, entries, set->availAttrs);
4253                }
4254            }
4255            if (isInside) {
4256                // Going in the middle, need to make space.
4257                memmove(entries+curEntry+1, entries+curEntry,
4258                        sizeof(bag_entry)*(set->numAttrs-curEntry));
4259                set->numAttrs++;
4260            }
4261            if (kDebugTableNoisy) {
4262                ALOGI("#%zu: Inserting new attribute: 0x%08x\n", curEntry, newName);
4263            }
4264        } else {
4265            if (kDebugTableNoisy) {
4266                ALOGI("#%zu: Replacing existing attribute: 0x%08x\n", curEntry, oldName);
4267            }
4268        }
4269
4270        bag_entry* cur = entries+curEntry;
4271
4272        cur->stringBlock = entry.package->header->index;
4273        cur->map.name.ident = newName;
4274        cur->map.value.copyFrom_dtoh(map->value);
4275        status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
4276        if (err != NO_ERROR) {
4277            ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
4278            return UNKNOWN_ERROR;
4279        }
4280
4281        if (kDebugTableNoisy) {
4282            ALOGI("Setting entry #%zu %p: block=%zd, name=0x%08d, type=%d, data=0x%08x\n",
4283                    curEntry, cur, cur->stringBlock, cur->map.name.ident,
4284                    cur->map.value.dataType, cur->map.value.data);
4285        }
4286
4287        // On to the next!
4288        curEntry++;
4289        pos++;
4290        const size_t size = dtohs(map->value.size);
4291        curOff += size + sizeof(*map)-sizeof(map->value);
4292    };
4293
4294    if (curEntry > set->numAttrs) {
4295        set->numAttrs = curEntry;
4296    }
4297
4298    // And this is it...
4299    typeSet[e] = set;
4300    if (set) {
4301        if (outTypeSpecFlags != NULL) {
4302            *outTypeSpecFlags = set->typeSpecFlags;
4303        }
4304        *outBag = (bag_entry*)(set+1);
4305        if (kDebugTableNoisy) {
4306            ALOGI("Returning %zu attrs\n", set->numAttrs);
4307        }
4308        return set->numAttrs;
4309    }
4310    return BAD_INDEX;
4311}
4312
4313void ResTable::setParameters(const ResTable_config* params)
4314{
4315    mLock.lock();
4316    if (kDebugTableGetEntry) {
4317        ALOGI("Setting parameters: %s\n", params->toString().string());
4318    }
4319    mParams = *params;
4320    for (size_t i=0; i<mPackageGroups.size(); i++) {
4321        if (kDebugTableNoisy) {
4322            ALOGI("CLEARING BAGS FOR GROUP %zu!", i);
4323        }
4324        mPackageGroups[i]->clearBagCache();
4325    }
4326    mLock.unlock();
4327}
4328
4329void ResTable::getParameters(ResTable_config* params) const
4330{
4331    mLock.lock();
4332    *params = mParams;
4333    mLock.unlock();
4334}
4335
4336struct id_name_map {
4337    uint32_t id;
4338    size_t len;
4339    char16_t name[6];
4340};
4341
4342const static id_name_map ID_NAMES[] = {
4343    { ResTable_map::ATTR_TYPE,  5, { '^', 't', 'y', 'p', 'e' } },
4344    { ResTable_map::ATTR_L10N,  5, { '^', 'l', '1', '0', 'n' } },
4345    { ResTable_map::ATTR_MIN,   4, { '^', 'm', 'i', 'n' } },
4346    { ResTable_map::ATTR_MAX,   4, { '^', 'm', 'a', 'x' } },
4347    { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4348    { ResTable_map::ATTR_ZERO,  5, { '^', 'z', 'e', 'r', 'o' } },
4349    { ResTable_map::ATTR_ONE,   4, { '^', 'o', 'n', 'e' } },
4350    { ResTable_map::ATTR_TWO,   4, { '^', 't', 'w', 'o' } },
4351    { ResTable_map::ATTR_FEW,   4, { '^', 'f', 'e', 'w' } },
4352    { ResTable_map::ATTR_MANY,  5, { '^', 'm', 'a', 'n', 'y' } },
4353};
4354
4355uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4356                                     const char16_t* type, size_t typeLen,
4357                                     const char16_t* package,
4358                                     size_t packageLen,
4359                                     uint32_t* outTypeSpecFlags) const
4360{
4361    if (kDebugTableSuperNoisy) {
4362        printf("Identifier for name: error=%d\n", mError);
4363    }
4364
4365    // Check for internal resource identifier as the very first thing, so
4366    // that we will always find them even when there are no resources.
4367    if (name[0] == '^') {
4368        const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4369        size_t len;
4370        for (int i=0; i<N; i++) {
4371            const id_name_map* m = ID_NAMES + i;
4372            len = m->len;
4373            if (len != nameLen) {
4374                continue;
4375            }
4376            for (size_t j=1; j<len; j++) {
4377                if (m->name[j] != name[j]) {
4378                    goto nope;
4379                }
4380            }
4381            if (outTypeSpecFlags) {
4382                *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4383            }
4384            return m->id;
4385nope:
4386            ;
4387        }
4388        if (nameLen > 7) {
4389            if (name[1] == 'i' && name[2] == 'n'
4390                && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4391                && name[6] == '_') {
4392                int index = atoi(String8(name + 7, nameLen - 7).string());
4393                if (Res_CHECKID(index)) {
4394                    ALOGW("Array resource index: %d is too large.",
4395                         index);
4396                    return 0;
4397                }
4398                if (outTypeSpecFlags) {
4399                    *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4400                }
4401                return  Res_MAKEARRAY(index);
4402            }
4403        }
4404        return 0;
4405    }
4406
4407    if (mError != NO_ERROR) {
4408        return 0;
4409    }
4410
4411    bool fakePublic = false;
4412
4413    // Figure out the package and type we are looking in...
4414
4415    const char16_t* packageEnd = NULL;
4416    const char16_t* typeEnd = NULL;
4417    const char16_t* const nameEnd = name+nameLen;
4418    const char16_t* p = name;
4419    while (p < nameEnd) {
4420        if (*p == ':') packageEnd = p;
4421        else if (*p == '/') typeEnd = p;
4422        p++;
4423    }
4424    if (*name == '@') {
4425        name++;
4426        if (*name == '*') {
4427            fakePublic = true;
4428            name++;
4429        }
4430    }
4431    if (name >= nameEnd) {
4432        return 0;
4433    }
4434
4435    if (packageEnd) {
4436        package = name;
4437        packageLen = packageEnd-name;
4438        name = packageEnd+1;
4439    } else if (!package) {
4440        return 0;
4441    }
4442
4443    if (typeEnd) {
4444        type = name;
4445        typeLen = typeEnd-name;
4446        name = typeEnd+1;
4447    } else if (!type) {
4448        return 0;
4449    }
4450
4451    if (name >= nameEnd) {
4452        return 0;
4453    }
4454    nameLen = nameEnd-name;
4455
4456    if (kDebugTableNoisy) {
4457        printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4458                String8(type, typeLen).string(),
4459                String8(name, nameLen).string(),
4460                String8(package, packageLen).string());
4461    }
4462
4463    const String16 attr("attr");
4464    const String16 attrPrivate("^attr-private");
4465
4466    const size_t NG = mPackageGroups.size();
4467    for (size_t ig=0; ig<NG; ig++) {
4468        const PackageGroup* group = mPackageGroups[ig];
4469
4470        if (strzcmp16(package, packageLen,
4471                      group->name.string(), group->name.size())) {
4472            if (kDebugTableNoisy) {
4473                printf("Skipping package group: %s\n", String8(group->name).string());
4474            }
4475            continue;
4476        }
4477
4478        const size_t packageCount = group->packages.size();
4479        for (size_t pi = 0; pi < packageCount; pi++) {
4480            const char16_t* targetType = type;
4481            size_t targetTypeLen = typeLen;
4482
4483            do {
4484                ssize_t ti = group->packages[pi]->typeStrings.indexOfString(
4485                        targetType, targetTypeLen);
4486                if (ti < 0) {
4487                    continue;
4488                }
4489
4490                ti += group->packages[pi]->typeIdOffset;
4491
4492                const uint32_t identifier = findEntry(group, ti, name, nameLen,
4493                        outTypeSpecFlags);
4494                if (identifier != 0) {
4495                    if (fakePublic && outTypeSpecFlags) {
4496                        *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4497                    }
4498                    return identifier;
4499                }
4500            } while (strzcmp16(attr.string(), attr.size(), targetType, targetTypeLen) == 0
4501                    && (targetType = attrPrivate.string())
4502                    && (targetTypeLen = attrPrivate.size())
4503            );
4504        }
4505        break;
4506    }
4507    return 0;
4508}
4509
4510uint32_t ResTable::findEntry(const PackageGroup* group, ssize_t typeIndex, const char16_t* name,
4511        size_t nameLen, uint32_t* outTypeSpecFlags) const {
4512    const TypeList& typeList = group->types[typeIndex];
4513    const size_t typeCount = typeList.size();
4514    for (size_t i = 0; i < typeCount; i++) {
4515        const Type* t = typeList[i];
4516        const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4517        if (ei < 0) {
4518            continue;
4519        }
4520
4521        const size_t configCount = t->configs.size();
4522        for (size_t j = 0; j < configCount; j++) {
4523            const TypeVariant tv(t->configs[j]);
4524            for (TypeVariant::iterator iter = tv.beginEntries();
4525                 iter != tv.endEntries();
4526                 iter++) {
4527                const ResTable_entry* entry = *iter;
4528                if (entry == NULL) {
4529                    continue;
4530                }
4531
4532                if (dtohl(entry->key.index) == (size_t) ei) {
4533                    uint32_t resId = Res_MAKEID(group->id - 1, typeIndex, iter.index());
4534                    if (outTypeSpecFlags) {
4535                        Entry result;
4536                        if (getEntry(group, typeIndex, iter.index(), NULL, &result) != NO_ERROR) {
4537                            ALOGW("Failed to find spec flags for 0x%08x", resId);
4538                            return 0;
4539                        }
4540                        *outTypeSpecFlags = result.specFlags;
4541                    }
4542                    return resId;
4543                }
4544            }
4545        }
4546    }
4547    return 0;
4548}
4549
4550bool ResTable::expandResourceRef(const char16_t* refStr, size_t refLen,
4551                                 String16* outPackage,
4552                                 String16* outType,
4553                                 String16* outName,
4554                                 const String16* defType,
4555                                 const String16* defPackage,
4556                                 const char** outErrorMsg,
4557                                 bool* outPublicOnly)
4558{
4559    const char16_t* packageEnd = NULL;
4560    const char16_t* typeEnd = NULL;
4561    const char16_t* p = refStr;
4562    const char16_t* const end = p + refLen;
4563    while (p < end) {
4564        if (*p == ':') packageEnd = p;
4565        else if (*p == '/') {
4566            typeEnd = p;
4567            break;
4568        }
4569        p++;
4570    }
4571    p = refStr;
4572    if (*p == '@') p++;
4573
4574    if (outPublicOnly != NULL) {
4575        *outPublicOnly = true;
4576    }
4577    if (*p == '*') {
4578        p++;
4579        if (outPublicOnly != NULL) {
4580            *outPublicOnly = false;
4581        }
4582    }
4583
4584    if (packageEnd) {
4585        *outPackage = String16(p, packageEnd-p);
4586        p = packageEnd+1;
4587    } else {
4588        if (!defPackage) {
4589            if (outErrorMsg) {
4590                *outErrorMsg = "No resource package specified";
4591            }
4592            return false;
4593        }
4594        *outPackage = *defPackage;
4595    }
4596    if (typeEnd) {
4597        *outType = String16(p, typeEnd-p);
4598        p = typeEnd+1;
4599    } else {
4600        if (!defType) {
4601            if (outErrorMsg) {
4602                *outErrorMsg = "No resource type specified";
4603            }
4604            return false;
4605        }
4606        *outType = *defType;
4607    }
4608    *outName = String16(p, end-p);
4609    if(**outPackage == 0) {
4610        if(outErrorMsg) {
4611            *outErrorMsg = "Resource package cannot be an empty string";
4612        }
4613        return false;
4614    }
4615    if(**outType == 0) {
4616        if(outErrorMsg) {
4617            *outErrorMsg = "Resource type cannot be an empty string";
4618        }
4619        return false;
4620    }
4621    if(**outName == 0) {
4622        if(outErrorMsg) {
4623            *outErrorMsg = "Resource id cannot be an empty string";
4624        }
4625        return false;
4626    }
4627    return true;
4628}
4629
4630static uint32_t get_hex(char c, bool* outError)
4631{
4632    if (c >= '0' && c <= '9') {
4633        return c - '0';
4634    } else if (c >= 'a' && c <= 'f') {
4635        return c - 'a' + 0xa;
4636    } else if (c >= 'A' && c <= 'F') {
4637        return c - 'A' + 0xa;
4638    }
4639    *outError = true;
4640    return 0;
4641}
4642
4643struct unit_entry
4644{
4645    const char* name;
4646    size_t len;
4647    uint8_t type;
4648    uint32_t unit;
4649    float scale;
4650};
4651
4652static const unit_entry unitNames[] = {
4653    { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
4654    { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4655    { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4656    { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
4657    { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
4658    { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
4659    { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
4660    { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
4661    { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
4662    { NULL, 0, 0, 0, 0 }
4663};
4664
4665static bool parse_unit(const char* str, Res_value* outValue,
4666                       float* outScale, const char** outEnd)
4667{
4668    const char* end = str;
4669    while (*end != 0 && !isspace((unsigned char)*end)) {
4670        end++;
4671    }
4672    const size_t len = end-str;
4673
4674    const char* realEnd = end;
4675    while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
4676        realEnd++;
4677    }
4678    if (*realEnd != 0) {
4679        return false;
4680    }
4681
4682    const unit_entry* cur = unitNames;
4683    while (cur->name) {
4684        if (len == cur->len && strncmp(cur->name, str, len) == 0) {
4685            outValue->dataType = cur->type;
4686            outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
4687            *outScale = cur->scale;
4688            *outEnd = end;
4689            //printf("Found unit %s for %s\n", cur->name, str);
4690            return true;
4691        }
4692        cur++;
4693    }
4694
4695    return false;
4696}
4697
4698bool U16StringToInt(const char16_t* s, size_t len, Res_value* outValue)
4699{
4700    while (len > 0 && isspace16(*s)) {
4701        s++;
4702        len--;
4703    }
4704
4705    if (len <= 0) {
4706        return false;
4707    }
4708
4709    size_t i = 0;
4710    int64_t val = 0;
4711    bool neg = false;
4712
4713    if (*s == '-') {
4714        neg = true;
4715        i++;
4716    }
4717
4718    if (s[i] < '0' || s[i] > '9') {
4719        return false;
4720    }
4721
4722    static_assert(std::is_same<uint32_t, Res_value::data_type>::value,
4723                  "Res_value::data_type has changed. The range checks in this "
4724                  "function are no longer correct.");
4725
4726    // Decimal or hex?
4727    bool isHex;
4728    if (len > 1 && s[i] == '0' && s[i+1] == 'x') {
4729        isHex = true;
4730        i += 2;
4731
4732        if (neg) {
4733            return false;
4734        }
4735
4736        if (i == len) {
4737            // Just u"0x"
4738            return false;
4739        }
4740
4741        bool error = false;
4742        while (i < len && !error) {
4743            val = (val*16) + get_hex(s[i], &error);
4744            i++;
4745
4746            if (val > std::numeric_limits<uint32_t>::max()) {
4747                return false;
4748            }
4749        }
4750        if (error) {
4751            return false;
4752        }
4753    } else {
4754        isHex = false;
4755        while (i < len) {
4756            if (s[i] < '0' || s[i] > '9') {
4757                return false;
4758            }
4759            val = (val*10) + s[i]-'0';
4760            i++;
4761
4762            if ((neg && -val < std::numeric_limits<int32_t>::min()) ||
4763                (!neg && val > std::numeric_limits<int32_t>::max())) {
4764                return false;
4765            }
4766        }
4767    }
4768
4769    if (neg) val = -val;
4770
4771    while (i < len && isspace16(s[i])) {
4772        i++;
4773    }
4774
4775    if (i != len) {
4776        return false;
4777    }
4778
4779    if (outValue) {
4780        outValue->dataType =
4781            isHex ? outValue->TYPE_INT_HEX : outValue->TYPE_INT_DEC;
4782        outValue->data = static_cast<Res_value::data_type>(val);
4783    }
4784    return true;
4785}
4786
4787bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
4788{
4789    return U16StringToInt(s, len, outValue);
4790}
4791
4792bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
4793{
4794    while (len > 0 && isspace16(*s)) {
4795        s++;
4796        len--;
4797    }
4798
4799    if (len <= 0) {
4800        return false;
4801    }
4802
4803    char buf[128];
4804    int i=0;
4805    while (len > 0 && *s != 0 && i < 126) {
4806        if (*s > 255) {
4807            return false;
4808        }
4809        buf[i++] = *s++;
4810        len--;
4811    }
4812
4813    if (len > 0) {
4814        return false;
4815    }
4816    if ((buf[0] < '0' || buf[0] > '9') && buf[0] != '.' && buf[0] != '-' && buf[0] != '+') {
4817        return false;
4818    }
4819
4820    buf[i] = 0;
4821    const char* end;
4822    float f = strtof(buf, (char**)&end);
4823
4824    if (*end != 0 && !isspace((unsigned char)*end)) {
4825        // Might be a unit...
4826        float scale;
4827        if (parse_unit(end, outValue, &scale, &end)) {
4828            f *= scale;
4829            const bool neg = f < 0;
4830            if (neg) f = -f;
4831            uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4832            uint32_t radix;
4833            uint32_t shift;
4834            if ((bits&0x7fffff) == 0) {
4835                // Always use 23p0 if there is no fraction, just to make
4836                // things easier to read.
4837                radix = Res_value::COMPLEX_RADIX_23p0;
4838                shift = 23;
4839            } else if ((bits&0xffffffffff800000LL) == 0) {
4840                // Magnitude is zero -- can fit in 0 bits of precision.
4841                radix = Res_value::COMPLEX_RADIX_0p23;
4842                shift = 0;
4843            } else if ((bits&0xffffffff80000000LL) == 0) {
4844                // Magnitude can fit in 8 bits of precision.
4845                radix = Res_value::COMPLEX_RADIX_8p15;
4846                shift = 8;
4847            } else if ((bits&0xffffff8000000000LL) == 0) {
4848                // Magnitude can fit in 16 bits of precision.
4849                radix = Res_value::COMPLEX_RADIX_16p7;
4850                shift = 16;
4851            } else {
4852                // Magnitude needs entire range, so no fractional part.
4853                radix = Res_value::COMPLEX_RADIX_23p0;
4854                shift = 23;
4855            }
4856            int32_t mantissa = (int32_t)(
4857                (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
4858            if (neg) {
4859                mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
4860            }
4861            outValue->data |=
4862                (radix<<Res_value::COMPLEX_RADIX_SHIFT)
4863                | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
4864            //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
4865            //       f * (neg ? -1 : 1), bits, f*(1<<23),
4866            //       radix, shift, outValue->data);
4867            return true;
4868        }
4869        return false;
4870    }
4871
4872    while (*end != 0 && isspace((unsigned char)*end)) {
4873        end++;
4874    }
4875
4876    if (*end == 0) {
4877        if (outValue) {
4878            outValue->dataType = outValue->TYPE_FLOAT;
4879            *(float*)(&outValue->data) = f;
4880            return true;
4881        }
4882    }
4883
4884    return false;
4885}
4886
4887bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4888                             const char16_t* s, size_t len,
4889                             bool preserveSpaces, bool coerceType,
4890                             uint32_t attrID,
4891                             const String16* defType,
4892                             const String16* defPackage,
4893                             Accessor* accessor,
4894                             void* accessorCookie,
4895                             uint32_t attrType,
4896                             bool enforcePrivate) const
4897{
4898    bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4899    const char* errorMsg = NULL;
4900
4901    outValue->size = sizeof(Res_value);
4902    outValue->res0 = 0;
4903
4904    // First strip leading/trailing whitespace.  Do this before handling
4905    // escapes, so they can be used to force whitespace into the string.
4906    if (!preserveSpaces) {
4907        while (len > 0 && isspace16(*s)) {
4908            s++;
4909            len--;
4910        }
4911        while (len > 0 && isspace16(s[len-1])) {
4912            len--;
4913        }
4914        // If the string ends with '\', then we keep the space after it.
4915        if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4916            len++;
4917        }
4918    }
4919
4920    //printf("Value for: %s\n", String8(s, len).string());
4921
4922    uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4923    uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4924    bool fromAccessor = false;
4925    if (attrID != 0 && !Res_INTERNALID(attrID)) {
4926        const ssize_t p = getResourcePackageIndex(attrID);
4927        const bag_entry* bag;
4928        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4929        //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4930        if (cnt >= 0) {
4931            while (cnt > 0) {
4932                //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4933                switch (bag->map.name.ident) {
4934                case ResTable_map::ATTR_TYPE:
4935                    attrType = bag->map.value.data;
4936                    break;
4937                case ResTable_map::ATTR_MIN:
4938                    attrMin = bag->map.value.data;
4939                    break;
4940                case ResTable_map::ATTR_MAX:
4941                    attrMax = bag->map.value.data;
4942                    break;
4943                case ResTable_map::ATTR_L10N:
4944                    l10nReq = bag->map.value.data;
4945                    break;
4946                }
4947                bag++;
4948                cnt--;
4949            }
4950            unlockBag(bag);
4951        } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4952            fromAccessor = true;
4953            if (attrType == ResTable_map::TYPE_ENUM
4954                    || attrType == ResTable_map::TYPE_FLAGS
4955                    || attrType == ResTable_map::TYPE_INTEGER) {
4956                accessor->getAttributeMin(attrID, &attrMin);
4957                accessor->getAttributeMax(attrID, &attrMax);
4958            }
4959            if (localizationSetting) {
4960                l10nReq = accessor->getAttributeL10N(attrID);
4961            }
4962        }
4963    }
4964
4965    const bool canStringCoerce =
4966        coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4967
4968    if (*s == '@') {
4969        outValue->dataType = outValue->TYPE_REFERENCE;
4970
4971        // Note: we don't check attrType here because the reference can
4972        // be to any other type; we just need to count on the client making
4973        // sure the referenced type is correct.
4974
4975        //printf("Looking up ref: %s\n", String8(s, len).string());
4976
4977        // It's a reference!
4978        if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4979            // Special case @null as undefined. This will be converted by
4980            // AssetManager to TYPE_NULL with data DATA_NULL_UNDEFINED.
4981            outValue->data = 0;
4982            return true;
4983        } else if (len == 6 && s[1]=='e' && s[2]=='m' && s[3]=='p' && s[4]=='t' && s[5]=='y') {
4984            // Special case @empty as explicitly defined empty value.
4985            outValue->dataType = Res_value::TYPE_NULL;
4986            outValue->data = Res_value::DATA_NULL_EMPTY;
4987            return true;
4988        } else {
4989            bool createIfNotFound = false;
4990            const char16_t* resourceRefName;
4991            int resourceNameLen;
4992            if (len > 2 && s[1] == '+') {
4993                createIfNotFound = true;
4994                resourceRefName = s + 2;
4995                resourceNameLen = len - 2;
4996            } else if (len > 2 && s[1] == '*') {
4997                enforcePrivate = false;
4998                resourceRefName = s + 2;
4999                resourceNameLen = len - 2;
5000            } else {
5001                createIfNotFound = false;
5002                resourceRefName = s + 1;
5003                resourceNameLen = len - 1;
5004            }
5005            String16 package, type, name;
5006            if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
5007                                   defType, defPackage, &errorMsg)) {
5008                if (accessor != NULL) {
5009                    accessor->reportError(accessorCookie, errorMsg);
5010                }
5011                return false;
5012            }
5013
5014            uint32_t specFlags = 0;
5015            uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
5016                    type.size(), package.string(), package.size(), &specFlags);
5017            if (rid != 0) {
5018                if (enforcePrivate) {
5019                    if (accessor == NULL || accessor->getAssetsPackage() != package) {
5020                        if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5021                            if (accessor != NULL) {
5022                                accessor->reportError(accessorCookie, "Resource is not public.");
5023                            }
5024                            return false;
5025                        }
5026                    }
5027                }
5028
5029                if (accessor) {
5030                    rid = Res_MAKEID(
5031                        accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5032                        Res_GETTYPE(rid), Res_GETENTRY(rid));
5033                    if (kDebugTableNoisy) {
5034                        ALOGI("Incl %s:%s/%s: 0x%08x\n",
5035                                String8(package).string(), String8(type).string(),
5036                                String8(name).string(), rid);
5037                    }
5038                }
5039
5040                uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5041                if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
5042                    outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5043                }
5044                outValue->data = rid;
5045                return true;
5046            }
5047
5048            if (accessor) {
5049                uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
5050                                                                       createIfNotFound);
5051                if (rid != 0) {
5052                    if (kDebugTableNoisy) {
5053                        ALOGI("Pckg %s:%s/%s: 0x%08x\n",
5054                                String8(package).string(), String8(type).string(),
5055                                String8(name).string(), rid);
5056                    }
5057                    uint32_t packageId = Res_GETPACKAGE(rid) + 1;
5058                    if (packageId == 0x00) {
5059                        outValue->data = rid;
5060                        outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
5061                        return true;
5062                    } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
5063                        // We accept packageId's generated as 0x01 in order to support
5064                        // building the android system resources
5065                        outValue->data = rid;
5066                        return true;
5067                    }
5068                }
5069            }
5070        }
5071
5072        if (accessor != NULL) {
5073            accessor->reportError(accessorCookie, "No resource found that matches the given name");
5074        }
5075        return false;
5076    }
5077
5078    // if we got to here, and localization is required and it's not a reference,
5079    // complain and bail.
5080    if (l10nReq == ResTable_map::L10N_SUGGESTED) {
5081        if (localizationSetting) {
5082            if (accessor != NULL) {
5083                accessor->reportError(accessorCookie, "This attribute must be localized.");
5084            }
5085        }
5086    }
5087
5088    if (*s == '#') {
5089        // It's a color!  Convert to an integer of the form 0xaarrggbb.
5090        uint32_t color = 0;
5091        bool error = false;
5092        if (len == 4) {
5093            outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
5094            color |= 0xFF000000;
5095            color |= get_hex(s[1], &error) << 20;
5096            color |= get_hex(s[1], &error) << 16;
5097            color |= get_hex(s[2], &error) << 12;
5098            color |= get_hex(s[2], &error) << 8;
5099            color |= get_hex(s[3], &error) << 4;
5100            color |= get_hex(s[3], &error);
5101        } else if (len == 5) {
5102            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
5103            color |= get_hex(s[1], &error) << 28;
5104            color |= get_hex(s[1], &error) << 24;
5105            color |= get_hex(s[2], &error) << 20;
5106            color |= get_hex(s[2], &error) << 16;
5107            color |= get_hex(s[3], &error) << 12;
5108            color |= get_hex(s[3], &error) << 8;
5109            color |= get_hex(s[4], &error) << 4;
5110            color |= get_hex(s[4], &error);
5111        } else if (len == 7) {
5112            outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
5113            color |= 0xFF000000;
5114            color |= get_hex(s[1], &error) << 20;
5115            color |= get_hex(s[2], &error) << 16;
5116            color |= get_hex(s[3], &error) << 12;
5117            color |= get_hex(s[4], &error) << 8;
5118            color |= get_hex(s[5], &error) << 4;
5119            color |= get_hex(s[6], &error);
5120        } else if (len == 9) {
5121            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
5122            color |= get_hex(s[1], &error) << 28;
5123            color |= get_hex(s[2], &error) << 24;
5124            color |= get_hex(s[3], &error) << 20;
5125            color |= get_hex(s[4], &error) << 16;
5126            color |= get_hex(s[5], &error) << 12;
5127            color |= get_hex(s[6], &error) << 8;
5128            color |= get_hex(s[7], &error) << 4;
5129            color |= get_hex(s[8], &error);
5130        } else {
5131            error = true;
5132        }
5133        if (!error) {
5134            if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
5135                if (!canStringCoerce) {
5136                    if (accessor != NULL) {
5137                        accessor->reportError(accessorCookie,
5138                                "Color types not allowed");
5139                    }
5140                    return false;
5141                }
5142            } else {
5143                outValue->data = color;
5144                //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
5145                return true;
5146            }
5147        } else {
5148            if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
5149                if (accessor != NULL) {
5150                    accessor->reportError(accessorCookie, "Color value not valid --"
5151                            " must be #rgb, #argb, #rrggbb, or #aarrggbb");
5152                }
5153                #if 0
5154                fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
5155                        "Resource File", //(const char*)in->getPrintableSource(),
5156                        String8(*curTag).string(),
5157                        String8(s, len).string());
5158                #endif
5159                return false;
5160            }
5161        }
5162    }
5163
5164    if (*s == '?') {
5165        outValue->dataType = outValue->TYPE_ATTRIBUTE;
5166
5167        // Note: we don't check attrType here because the reference can
5168        // be to any other type; we just need to count on the client making
5169        // sure the referenced type is correct.
5170
5171        //printf("Looking up attr: %s\n", String8(s, len).string());
5172
5173        static const String16 attr16("attr");
5174        String16 package, type, name;
5175        if (!expandResourceRef(s+1, len-1, &package, &type, &name,
5176                               &attr16, defPackage, &errorMsg)) {
5177            if (accessor != NULL) {
5178                accessor->reportError(accessorCookie, errorMsg);
5179            }
5180            return false;
5181        }
5182
5183        //printf("Pkg: %s, Type: %s, Name: %s\n",
5184        //       String8(package).string(), String8(type).string(),
5185        //       String8(name).string());
5186        uint32_t specFlags = 0;
5187        uint32_t rid =
5188            identifierForName(name.string(), name.size(),
5189                              type.string(), type.size(),
5190                              package.string(), package.size(), &specFlags);
5191        if (rid != 0) {
5192            if (enforcePrivate) {
5193                if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
5194                    if (accessor != NULL) {
5195                        accessor->reportError(accessorCookie, "Attribute is not public.");
5196                    }
5197                    return false;
5198                }
5199            }
5200            if (!accessor) {
5201                outValue->data = rid;
5202                return true;
5203            }
5204            rid = Res_MAKEID(
5205                accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
5206                Res_GETTYPE(rid), Res_GETENTRY(rid));
5207            //printf("Incl %s:%s/%s: 0x%08x\n",
5208            //       String8(package).string(), String8(type).string(),
5209            //       String8(name).string(), rid);
5210            outValue->data = rid;
5211            return true;
5212        }
5213
5214        if (accessor) {
5215            uint32_t rid = accessor->getCustomResource(package, type, name);
5216            if (rid != 0) {
5217                //printf("Mine %s:%s/%s: 0x%08x\n",
5218                //       String8(package).string(), String8(type).string(),
5219                //       String8(name).string(), rid);
5220                outValue->data = rid;
5221                return true;
5222            }
5223        }
5224
5225        if (accessor != NULL) {
5226            accessor->reportError(accessorCookie, "No resource found that matches the given name");
5227        }
5228        return false;
5229    }
5230
5231    if (stringToInt(s, len, outValue)) {
5232        if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
5233            // If this type does not allow integers, but does allow floats,
5234            // fall through on this error case because the float type should
5235            // be able to accept any integer value.
5236            if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
5237                if (accessor != NULL) {
5238                    accessor->reportError(accessorCookie, "Integer types not allowed");
5239                }
5240                return false;
5241            }
5242        } else {
5243            if (((int32_t)outValue->data) < ((int32_t)attrMin)
5244                    || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
5245                if (accessor != NULL) {
5246                    accessor->reportError(accessorCookie, "Integer value out of range");
5247                }
5248                return false;
5249            }
5250            return true;
5251        }
5252    }
5253
5254    if (stringToFloat(s, len, outValue)) {
5255        if (outValue->dataType == Res_value::TYPE_DIMENSION) {
5256            if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
5257                return true;
5258            }
5259            if (!canStringCoerce) {
5260                if (accessor != NULL) {
5261                    accessor->reportError(accessorCookie, "Dimension types not allowed");
5262                }
5263                return false;
5264            }
5265        } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
5266            if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
5267                return true;
5268            }
5269            if (!canStringCoerce) {
5270                if (accessor != NULL) {
5271                    accessor->reportError(accessorCookie, "Fraction types not allowed");
5272                }
5273                return false;
5274            }
5275        } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
5276            if (!canStringCoerce) {
5277                if (accessor != NULL) {
5278                    accessor->reportError(accessorCookie, "Float types not allowed");
5279                }
5280                return false;
5281            }
5282        } else {
5283            return true;
5284        }
5285    }
5286
5287    if (len == 4) {
5288        if ((s[0] == 't' || s[0] == 'T') &&
5289            (s[1] == 'r' || s[1] == 'R') &&
5290            (s[2] == 'u' || s[2] == 'U') &&
5291            (s[3] == 'e' || s[3] == 'E')) {
5292            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5293                if (!canStringCoerce) {
5294                    if (accessor != NULL) {
5295                        accessor->reportError(accessorCookie, "Boolean types not allowed");
5296                    }
5297                    return false;
5298                }
5299            } else {
5300                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5301                outValue->data = (uint32_t)-1;
5302                return true;
5303            }
5304        }
5305    }
5306
5307    if (len == 5) {
5308        if ((s[0] == 'f' || s[0] == 'F') &&
5309            (s[1] == 'a' || s[1] == 'A') &&
5310            (s[2] == 'l' || s[2] == 'L') &&
5311            (s[3] == 's' || s[3] == 'S') &&
5312            (s[4] == 'e' || s[4] == 'E')) {
5313            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
5314                if (!canStringCoerce) {
5315                    if (accessor != NULL) {
5316                        accessor->reportError(accessorCookie, "Boolean types not allowed");
5317                    }
5318                    return false;
5319                }
5320            } else {
5321                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
5322                outValue->data = 0;
5323                return true;
5324            }
5325        }
5326    }
5327
5328    if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
5329        const ssize_t p = getResourcePackageIndex(attrID);
5330        const bag_entry* bag;
5331        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5332        //printf("Got %d for enum\n", cnt);
5333        if (cnt >= 0) {
5334            resource_name rname;
5335            while (cnt > 0) {
5336                if (!Res_INTERNALID(bag->map.name.ident)) {
5337                    //printf("Trying attr #%08x\n", bag->map.name.ident);
5338                    if (getResourceName(bag->map.name.ident, false, &rname)) {
5339                        #if 0
5340                        printf("Matching %s against %s (0x%08x)\n",
5341                               String8(s, len).string(),
5342                               String8(rname.name, rname.nameLen).string(),
5343                               bag->map.name.ident);
5344                        #endif
5345                        if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
5346                            outValue->dataType = bag->map.value.dataType;
5347                            outValue->data = bag->map.value.data;
5348                            unlockBag(bag);
5349                            return true;
5350                        }
5351                    }
5352
5353                }
5354                bag++;
5355                cnt--;
5356            }
5357            unlockBag(bag);
5358        }
5359
5360        if (fromAccessor) {
5361            if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5362                return true;
5363            }
5364        }
5365    }
5366
5367    if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5368        const ssize_t p = getResourcePackageIndex(attrID);
5369        const bag_entry* bag;
5370        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5371        //printf("Got %d for flags\n", cnt);
5372        if (cnt >= 0) {
5373            bool failed = false;
5374            resource_name rname;
5375            outValue->dataType = Res_value::TYPE_INT_HEX;
5376            outValue->data = 0;
5377            const char16_t* end = s + len;
5378            const char16_t* pos = s;
5379            while (pos < end && !failed) {
5380                const char16_t* start = pos;
5381                pos++;
5382                while (pos < end && *pos != '|') {
5383                    pos++;
5384                }
5385                //printf("Looking for: %s\n", String8(start, pos-start).string());
5386                const bag_entry* bagi = bag;
5387                ssize_t i;
5388                for (i=0; i<cnt; i++, bagi++) {
5389                    if (!Res_INTERNALID(bagi->map.name.ident)) {
5390                        //printf("Trying attr #%08x\n", bagi->map.name.ident);
5391                        if (getResourceName(bagi->map.name.ident, false, &rname)) {
5392                            #if 0
5393                            printf("Matching %s against %s (0x%08x)\n",
5394                                   String8(start,pos-start).string(),
5395                                   String8(rname.name, rname.nameLen).string(),
5396                                   bagi->map.name.ident);
5397                            #endif
5398                            if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5399                                outValue->data |= bagi->map.value.data;
5400                                break;
5401                            }
5402                        }
5403                    }
5404                }
5405                if (i >= cnt) {
5406                    // Didn't find this flag identifier.
5407                    failed = true;
5408                }
5409                if (pos < end) {
5410                    pos++;
5411                }
5412            }
5413            unlockBag(bag);
5414            if (!failed) {
5415                //printf("Final flag value: 0x%lx\n", outValue->data);
5416                return true;
5417            }
5418        }
5419
5420
5421        if (fromAccessor) {
5422            if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5423                //printf("Final flag value: 0x%lx\n", outValue->data);
5424                return true;
5425            }
5426        }
5427    }
5428
5429    if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5430        if (accessor != NULL) {
5431            accessor->reportError(accessorCookie, "String types not allowed");
5432        }
5433        return false;
5434    }
5435
5436    // Generic string handling...
5437    outValue->dataType = outValue->TYPE_STRING;
5438    if (outString) {
5439        bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5440        if (accessor != NULL) {
5441            accessor->reportError(accessorCookie, errorMsg);
5442        }
5443        return failed;
5444    }
5445
5446    return true;
5447}
5448
5449bool ResTable::collectString(String16* outString,
5450                             const char16_t* s, size_t len,
5451                             bool preserveSpaces,
5452                             const char** outErrorMsg,
5453                             bool append)
5454{
5455    String16 tmp;
5456
5457    char quoted = 0;
5458    const char16_t* p = s;
5459    while (p < (s+len)) {
5460        while (p < (s+len)) {
5461            const char16_t c = *p;
5462            if (c == '\\') {
5463                break;
5464            }
5465            if (!preserveSpaces) {
5466                if (quoted == 0 && isspace16(c)
5467                    && (c != ' ' || isspace16(*(p+1)))) {
5468                    break;
5469                }
5470                if (c == '"' && (quoted == 0 || quoted == '"')) {
5471                    break;
5472                }
5473                if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5474                    /*
5475                     * In practice, when people write ' instead of \'
5476                     * in a string, they are doing it by accident
5477                     * instead of really meaning to use ' as a quoting
5478                     * character.  Warn them so they don't lose it.
5479                     */
5480                    if (outErrorMsg) {
5481                        *outErrorMsg = "Apostrophe not preceded by \\";
5482                    }
5483                    return false;
5484                }
5485            }
5486            p++;
5487        }
5488        if (p < (s+len)) {
5489            if (p > s) {
5490                tmp.append(String16(s, p-s));
5491            }
5492            if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5493                if (quoted == 0) {
5494                    quoted = *p;
5495                } else {
5496                    quoted = 0;
5497                }
5498                p++;
5499            } else if (!preserveSpaces && isspace16(*p)) {
5500                // Space outside of a quote -- consume all spaces and
5501                // leave a single plain space char.
5502                tmp.append(String16(" "));
5503                p++;
5504                while (p < (s+len) && isspace16(*p)) {
5505                    p++;
5506                }
5507            } else if (*p == '\\') {
5508                p++;
5509                if (p < (s+len)) {
5510                    switch (*p) {
5511                    case 't':
5512                        tmp.append(String16("\t"));
5513                        break;
5514                    case 'n':
5515                        tmp.append(String16("\n"));
5516                        break;
5517                    case '#':
5518                        tmp.append(String16("#"));
5519                        break;
5520                    case '@':
5521                        tmp.append(String16("@"));
5522                        break;
5523                    case '?':
5524                        tmp.append(String16("?"));
5525                        break;
5526                    case '"':
5527                        tmp.append(String16("\""));
5528                        break;
5529                    case '\'':
5530                        tmp.append(String16("'"));
5531                        break;
5532                    case '\\':
5533                        tmp.append(String16("\\"));
5534                        break;
5535                    case 'u':
5536                    {
5537                        char16_t chr = 0;
5538                        int i = 0;
5539                        while (i < 4 && p[1] != 0) {
5540                            p++;
5541                            i++;
5542                            int c;
5543                            if (*p >= '0' && *p <= '9') {
5544                                c = *p - '0';
5545                            } else if (*p >= 'a' && *p <= 'f') {
5546                                c = *p - 'a' + 10;
5547                            } else if (*p >= 'A' && *p <= 'F') {
5548                                c = *p - 'A' + 10;
5549                            } else {
5550                                if (outErrorMsg) {
5551                                    *outErrorMsg = "Bad character in \\u unicode escape sequence";
5552                                }
5553                                return false;
5554                            }
5555                            chr = (chr<<4) | c;
5556                        }
5557                        tmp.append(String16(&chr, 1));
5558                    } break;
5559                    default:
5560                        // ignore unknown escape chars.
5561                        break;
5562                    }
5563                    p++;
5564                }
5565            }
5566            len -= (p-s);
5567            s = p;
5568        }
5569    }
5570
5571    if (tmp.size() != 0) {
5572        if (len > 0) {
5573            tmp.append(String16(s, len));
5574        }
5575        if (append) {
5576            outString->append(tmp);
5577        } else {
5578            outString->setTo(tmp);
5579        }
5580    } else {
5581        if (append) {
5582            outString->append(String16(s, len));
5583        } else {
5584            outString->setTo(s, len);
5585        }
5586    }
5587
5588    return true;
5589}
5590
5591size_t ResTable::getBasePackageCount() const
5592{
5593    if (mError != NO_ERROR) {
5594        return 0;
5595    }
5596    return mPackageGroups.size();
5597}
5598
5599const String16 ResTable::getBasePackageName(size_t idx) const
5600{
5601    if (mError != NO_ERROR) {
5602        return String16();
5603    }
5604    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5605                 "Requested package index %d past package count %d",
5606                 (int)idx, (int)mPackageGroups.size());
5607    return mPackageGroups[idx]->name;
5608}
5609
5610uint32_t ResTable::getBasePackageId(size_t idx) const
5611{
5612    if (mError != NO_ERROR) {
5613        return 0;
5614    }
5615    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5616                 "Requested package index %d past package count %d",
5617                 (int)idx, (int)mPackageGroups.size());
5618    return mPackageGroups[idx]->id;
5619}
5620
5621uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
5622{
5623    if (mError != NO_ERROR) {
5624        return 0;
5625    }
5626    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5627            "Requested package index %d past package count %d",
5628            (int)idx, (int)mPackageGroups.size());
5629    const PackageGroup* const group = mPackageGroups[idx];
5630    return group->largestTypeId;
5631}
5632
5633size_t ResTable::getTableCount() const
5634{
5635    return mHeaders.size();
5636}
5637
5638const ResStringPool* ResTable::getTableStringBlock(size_t index) const
5639{
5640    return &mHeaders[index]->values;
5641}
5642
5643int32_t ResTable::getTableCookie(size_t index) const
5644{
5645    return mHeaders[index]->cookie;
5646}
5647
5648const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
5649{
5650    const size_t N = mPackageGroups.size();
5651    for (size_t i = 0; i < N; i++) {
5652        const PackageGroup* pg = mPackageGroups[i];
5653        size_t M = pg->packages.size();
5654        for (size_t j = 0; j < M; j++) {
5655            if (pg->packages[j]->header->cookie == cookie) {
5656                return &pg->dynamicRefTable;
5657            }
5658        }
5659    }
5660    return NULL;
5661}
5662
5663void ResTable::getConfigurations(Vector<ResTable_config>* configs, bool ignoreMipmap) const
5664{
5665    const size_t packageCount = mPackageGroups.size();
5666    for (size_t i = 0; i < packageCount; i++) {
5667        const PackageGroup* packageGroup = mPackageGroups[i];
5668        const size_t typeCount = packageGroup->types.size();
5669        for (size_t j = 0; j < typeCount; j++) {
5670            const TypeList& typeList = packageGroup->types[j];
5671            const size_t numTypes = typeList.size();
5672            for (size_t k = 0; k < numTypes; k++) {
5673                const Type* type = typeList[k];
5674                const ResStringPool& typeStrings = type->package->typeStrings;
5675                if (ignoreMipmap && typeStrings.string8ObjectAt(
5676                            type->typeSpec->id - 1) == "mipmap") {
5677                    continue;
5678                }
5679
5680                const size_t numConfigs = type->configs.size();
5681                for (size_t m = 0; m < numConfigs; m++) {
5682                    const ResTable_type* config = type->configs[m];
5683                    ResTable_config cfg;
5684                    memset(&cfg, 0, sizeof(ResTable_config));
5685                    cfg.copyFromDtoH(config->config);
5686                    // only insert unique
5687                    const size_t N = configs->size();
5688                    size_t n;
5689                    for (n = 0; n < N; n++) {
5690                        if (0 == (*configs)[n].compare(cfg)) {
5691                            break;
5692                        }
5693                    }
5694                    // if we didn't find it
5695                    if (n == N) {
5696                        configs->add(cfg);
5697                    }
5698                }
5699            }
5700        }
5701    }
5702}
5703
5704void ResTable::getLocales(Vector<String8>* locales) const
5705{
5706    Vector<ResTable_config> configs;
5707    ALOGV("calling getConfigurations");
5708    getConfigurations(&configs);
5709    ALOGV("called getConfigurations size=%d", (int)configs.size());
5710    const size_t I = configs.size();
5711
5712    char locale[RESTABLE_MAX_LOCALE_LEN];
5713    for (size_t i=0; i<I; i++) {
5714        configs[i].getBcp47Locale(locale);
5715        const size_t J = locales->size();
5716        size_t j;
5717        for (j=0; j<J; j++) {
5718            if (0 == strcmp(locale, (*locales)[j].string())) {
5719                break;
5720            }
5721        }
5722        if (j == J) {
5723            locales->add(String8(locale));
5724        }
5725    }
5726}
5727
5728StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
5729    : mPool(pool), mIndex(index) {}
5730
5731StringPoolRef::StringPoolRef()
5732    : mPool(NULL), mIndex(0) {}
5733
5734const char* StringPoolRef::string8(size_t* outLen) const {
5735    if (mPool != NULL) {
5736        return mPool->string8At(mIndex, outLen);
5737    }
5738    if (outLen != NULL) {
5739        *outLen = 0;
5740    }
5741    return NULL;
5742}
5743
5744const char16_t* StringPoolRef::string16(size_t* outLen) const {
5745    if (mPool != NULL) {
5746        return mPool->stringAt(mIndex, outLen);
5747    }
5748    if (outLen != NULL) {
5749        *outLen = 0;
5750    }
5751    return NULL;
5752}
5753
5754bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
5755    if (mError != NO_ERROR) {
5756        return false;
5757    }
5758
5759    const ssize_t p = getResourcePackageIndex(resID);
5760    const int t = Res_GETTYPE(resID);
5761    const int e = Res_GETENTRY(resID);
5762
5763    if (p < 0) {
5764        if (Res_GETPACKAGE(resID)+1 == 0) {
5765            ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
5766        } else {
5767            ALOGW("No known package when getting flags for resource number 0x%08x", resID);
5768        }
5769        return false;
5770    }
5771    if (t < 0) {
5772        ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
5773        return false;
5774    }
5775
5776    const PackageGroup* const grp = mPackageGroups[p];
5777    if (grp == NULL) {
5778        ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
5779        return false;
5780    }
5781
5782    Entry entry;
5783    status_t err = getEntry(grp, t, e, NULL, &entry);
5784    if (err != NO_ERROR) {
5785        return false;
5786    }
5787
5788    *outFlags = entry.specFlags;
5789    return true;
5790}
5791
5792status_t ResTable::getEntry(
5793        const PackageGroup* packageGroup, int typeIndex, int entryIndex,
5794        const ResTable_config* config,
5795        Entry* outEntry) const
5796{
5797    const TypeList& typeList = packageGroup->types[typeIndex];
5798    if (typeList.isEmpty()) {
5799        ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
5800        return BAD_TYPE;
5801    }
5802
5803    const ResTable_type* bestType = NULL;
5804    uint32_t bestOffset = ResTable_type::NO_ENTRY;
5805    const Package* bestPackage = NULL;
5806    uint32_t specFlags = 0;
5807    uint8_t actualTypeIndex = typeIndex;
5808    ResTable_config bestConfig;
5809    memset(&bestConfig, 0, sizeof(bestConfig));
5810
5811    // Iterate over the Types of each package.
5812    const size_t typeCount = typeList.size();
5813    for (size_t i = 0; i < typeCount; i++) {
5814        const Type* const typeSpec = typeList[i];
5815
5816        int realEntryIndex = entryIndex;
5817        int realTypeIndex = typeIndex;
5818        bool currentTypeIsOverlay = false;
5819
5820        // Runtime overlay packages provide a mapping of app resource
5821        // ID to package resource ID.
5822        if (typeSpec->idmapEntries.hasEntries()) {
5823            uint16_t overlayEntryIndex;
5824            if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
5825                // No such mapping exists
5826                continue;
5827            }
5828            realEntryIndex = overlayEntryIndex;
5829            realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
5830            currentTypeIsOverlay = true;
5831        }
5832
5833        if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
5834            ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
5835                    Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
5836                    entryIndex, static_cast<int>(typeSpec->entryCount));
5837            // We should normally abort here, but some legacy apps declare
5838            // resources in the 'android' package (old bug in AAPT).
5839            continue;
5840        }
5841
5842        // Aggregate all the flags for each package that defines this entry.
5843        if (typeSpec->typeSpecFlags != NULL) {
5844            specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
5845        } else {
5846            specFlags = -1;
5847        }
5848
5849        const size_t numConfigs = typeSpec->configs.size();
5850        for (size_t c = 0; c < numConfigs; c++) {
5851            const ResTable_type* const thisType = typeSpec->configs[c];
5852            if (thisType == NULL) {
5853                continue;
5854            }
5855
5856            ResTable_config thisConfig;
5857            thisConfig.copyFromDtoH(thisType->config);
5858
5859            // Check to make sure this one is valid for the current parameters.
5860            if (config != NULL && !thisConfig.match(*config)) {
5861                continue;
5862            }
5863
5864            // Check if there is the desired entry in this type.
5865            const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
5866                    reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
5867
5868            uint32_t thisOffset = dtohl(eindex[realEntryIndex]);
5869            if (thisOffset == ResTable_type::NO_ENTRY) {
5870                // There is no entry for this index and configuration.
5871                continue;
5872            }
5873
5874            if (bestType != NULL) {
5875                // Check if this one is less specific than the last found.  If so,
5876                // we will skip it.  We check starting with things we most care
5877                // about to those we least care about.
5878                if (!thisConfig.isBetterThan(bestConfig, config)) {
5879                    if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
5880                        continue;
5881                    }
5882                }
5883            }
5884
5885            bestType = thisType;
5886            bestOffset = thisOffset;
5887            bestConfig = thisConfig;
5888            bestPackage = typeSpec->package;
5889            actualTypeIndex = realTypeIndex;
5890
5891            // If no config was specified, any type will do, so skip
5892            if (config == NULL) {
5893                break;
5894            }
5895        }
5896    }
5897
5898    if (bestType == NULL) {
5899        return BAD_INDEX;
5900    }
5901
5902    bestOffset += dtohl(bestType->entriesStart);
5903
5904    if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
5905        ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
5906                bestOffset, dtohl(bestType->header.size));
5907        return BAD_TYPE;
5908    }
5909    if ((bestOffset & 0x3) != 0) {
5910        ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
5911        return BAD_TYPE;
5912    }
5913
5914    const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
5915            reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
5916    if (dtohs(entry->size) < sizeof(*entry)) {
5917        ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
5918        return BAD_TYPE;
5919    }
5920
5921    if (outEntry != NULL) {
5922        outEntry->entry = entry;
5923        outEntry->config = bestConfig;
5924        outEntry->type = bestType;
5925        outEntry->specFlags = specFlags;
5926        outEntry->package = bestPackage;
5927        outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
5928        outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
5929    }
5930    return NO_ERROR;
5931}
5932
5933status_t ResTable::parsePackage(const ResTable_package* const pkg,
5934                                const Header* const header)
5935{
5936    const uint8_t* base = (const uint8_t*)pkg;
5937    status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
5938                                  header->dataEnd, "ResTable_package");
5939    if (err != NO_ERROR) {
5940        return (mError=err);
5941    }
5942
5943    const uint32_t pkgSize = dtohl(pkg->header.size);
5944
5945    if (dtohl(pkg->typeStrings) >= pkgSize) {
5946        ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
5947             dtohl(pkg->typeStrings), pkgSize);
5948        return (mError=BAD_TYPE);
5949    }
5950    if ((dtohl(pkg->typeStrings)&0x3) != 0) {
5951        ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
5952             dtohl(pkg->typeStrings));
5953        return (mError=BAD_TYPE);
5954    }
5955    if (dtohl(pkg->keyStrings) >= pkgSize) {
5956        ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
5957             dtohl(pkg->keyStrings), pkgSize);
5958        return (mError=BAD_TYPE);
5959    }
5960    if ((dtohl(pkg->keyStrings)&0x3) != 0) {
5961        ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
5962             dtohl(pkg->keyStrings));
5963        return (mError=BAD_TYPE);
5964    }
5965
5966    uint32_t id = dtohl(pkg->id);
5967    KeyedVector<uint8_t, IdmapEntries> idmapEntries;
5968
5969    if (header->resourceIDMap != NULL) {
5970        uint8_t targetPackageId = 0;
5971        status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
5972        if (err != NO_ERROR) {
5973            ALOGW("Overlay is broken");
5974            return (mError=err);
5975        }
5976        id = targetPackageId;
5977    }
5978
5979    if (id >= 256) {
5980        LOG_ALWAYS_FATAL("Package id out of range");
5981        return NO_ERROR;
5982    } else if (id == 0) {
5983        // This is a library so assign an ID
5984        id = mNextPackageId++;
5985    }
5986
5987    PackageGroup* group = NULL;
5988    Package* package = new Package(this, header, pkg);
5989    if (package == NULL) {
5990        return (mError=NO_MEMORY);
5991    }
5992
5993    err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
5994                                   header->dataEnd-(base+dtohl(pkg->typeStrings)));
5995    if (err != NO_ERROR) {
5996        delete group;
5997        delete package;
5998        return (mError=err);
5999    }
6000
6001    err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
6002                                  header->dataEnd-(base+dtohl(pkg->keyStrings)));
6003    if (err != NO_ERROR) {
6004        delete group;
6005        delete package;
6006        return (mError=err);
6007    }
6008
6009    size_t idx = mPackageMap[id];
6010    if (idx == 0) {
6011        idx = mPackageGroups.size() + 1;
6012
6013        char16_t tmpName[sizeof(pkg->name)/sizeof(pkg->name[0])];
6014        strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(pkg->name[0]));
6015        group = new PackageGroup(this, String16(tmpName), id);
6016        if (group == NULL) {
6017            delete package;
6018            return (mError=NO_MEMORY);
6019        }
6020
6021        err = mPackageGroups.add(group);
6022        if (err < NO_ERROR) {
6023            return (mError=err);
6024        }
6025
6026        mPackageMap[id] = static_cast<uint8_t>(idx);
6027
6028        // Find all packages that reference this package
6029        size_t N = mPackageGroups.size();
6030        for (size_t i = 0; i < N; i++) {
6031            mPackageGroups[i]->dynamicRefTable.addMapping(
6032                    group->name, static_cast<uint8_t>(group->id));
6033        }
6034    } else {
6035        group = mPackageGroups.itemAt(idx - 1);
6036        if (group == NULL) {
6037            return (mError=UNKNOWN_ERROR);
6038        }
6039    }
6040
6041    err = group->packages.add(package);
6042    if (err < NO_ERROR) {
6043        return (mError=err);
6044    }
6045
6046    // Iterate through all chunks.
6047    const ResChunk_header* chunk =
6048        (const ResChunk_header*)(((const uint8_t*)pkg)
6049                                 + dtohs(pkg->header.headerSize));
6050    const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
6051    while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
6052           ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
6053        if (kDebugTableNoisy) {
6054            ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
6055                    dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
6056                    (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
6057        }
6058        const size_t csize = dtohl(chunk->size);
6059        const uint16_t ctype = dtohs(chunk->type);
6060        if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
6061            const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
6062            err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
6063                                 endPos, "ResTable_typeSpec");
6064            if (err != NO_ERROR) {
6065                return (mError=err);
6066            }
6067
6068            const size_t typeSpecSize = dtohl(typeSpec->header.size);
6069            const size_t newEntryCount = dtohl(typeSpec->entryCount);
6070
6071            if (kDebugLoadTableNoisy) {
6072                ALOGI("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
6073                        (void*)(base-(const uint8_t*)chunk),
6074                        dtohs(typeSpec->header.type),
6075                        dtohs(typeSpec->header.headerSize),
6076                        (void*)typeSpecSize);
6077            }
6078            // look for block overrun or int overflow when multiplying by 4
6079            if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
6080                    || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
6081                    > typeSpecSize)) {
6082                ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
6083                        (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6084                        (void*)typeSpecSize);
6085                return (mError=BAD_TYPE);
6086            }
6087
6088            if (typeSpec->id == 0) {
6089                ALOGW("ResTable_type has an id of 0.");
6090                return (mError=BAD_TYPE);
6091            }
6092
6093            if (newEntryCount > 0) {
6094                uint8_t typeIndex = typeSpec->id - 1;
6095                ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
6096                if (idmapIndex >= 0) {
6097                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6098                }
6099
6100                TypeList& typeList = group->types.editItemAt(typeIndex);
6101                if (!typeList.isEmpty()) {
6102                    const Type* existingType = typeList[0];
6103                    if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
6104                        ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
6105                                (int) newEntryCount, (int) existingType->entryCount);
6106                        // We should normally abort here, but some legacy apps declare
6107                        // resources in the 'android' package (old bug in AAPT).
6108                    }
6109                }
6110
6111                Type* t = new Type(header, package, newEntryCount);
6112                t->typeSpec = typeSpec;
6113                t->typeSpecFlags = (const uint32_t*)(
6114                        ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
6115                if (idmapIndex >= 0) {
6116                    t->idmapEntries = idmapEntries[idmapIndex];
6117                }
6118                typeList.add(t);
6119                group->largestTypeId = max(group->largestTypeId, typeSpec->id);
6120            } else {
6121                ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
6122            }
6123
6124        } else if (ctype == RES_TABLE_TYPE_TYPE) {
6125            const ResTable_type* type = (const ResTable_type*)(chunk);
6126            err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
6127                                 endPos, "ResTable_type");
6128            if (err != NO_ERROR) {
6129                return (mError=err);
6130            }
6131
6132            const uint32_t typeSize = dtohl(type->header.size);
6133            const size_t newEntryCount = dtohl(type->entryCount);
6134
6135            if (kDebugLoadTableNoisy) {
6136                printf("Type off %p: type=0x%x, headerSize=0x%x, size=%u\n",
6137                        (void*)(base-(const uint8_t*)chunk),
6138                        dtohs(type->header.type),
6139                        dtohs(type->header.headerSize),
6140                        typeSize);
6141            }
6142            if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount) > typeSize) {
6143                ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
6144                        (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
6145                        typeSize);
6146                return (mError=BAD_TYPE);
6147            }
6148
6149            if (newEntryCount != 0
6150                && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
6151                ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
6152                     dtohl(type->entriesStart), typeSize);
6153                return (mError=BAD_TYPE);
6154            }
6155
6156            if (type->id == 0) {
6157                ALOGW("ResTable_type has an id of 0.");
6158                return (mError=BAD_TYPE);
6159            }
6160
6161            if (newEntryCount > 0) {
6162                uint8_t typeIndex = type->id - 1;
6163                ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
6164                if (idmapIndex >= 0) {
6165                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
6166                }
6167
6168                TypeList& typeList = group->types.editItemAt(typeIndex);
6169                if (typeList.isEmpty()) {
6170                    ALOGE("No TypeSpec for type %d", type->id);
6171                    return (mError=BAD_TYPE);
6172                }
6173
6174                Type* t = typeList.editItemAt(typeList.size() - 1);
6175                if (newEntryCount != t->entryCount) {
6176                    ALOGE("ResTable_type entry count inconsistent: given %d, previously %d",
6177                        (int)newEntryCount, (int)t->entryCount);
6178                    return (mError=BAD_TYPE);
6179                }
6180
6181                if (t->package != package) {
6182                    ALOGE("No TypeSpec for type %d", type->id);
6183                    return (mError=BAD_TYPE);
6184                }
6185
6186                t->configs.add(type);
6187
6188                if (kDebugTableGetEntry) {
6189                    ResTable_config thisConfig;
6190                    thisConfig.copyFromDtoH(type->config);
6191                    ALOGI("Adding config to type %d: %s\n", type->id,
6192                            thisConfig.toString().string());
6193                }
6194            } else {
6195                ALOGV("Skipping empty ResTable_type for type %d", type->id);
6196            }
6197
6198        } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
6199            if (group->dynamicRefTable.entries().size() == 0) {
6200                status_t err = group->dynamicRefTable.load((const ResTable_lib_header*) chunk);
6201                if (err != NO_ERROR) {
6202                    return (mError=err);
6203                }
6204
6205                // Fill in the reference table with the entries we already know about.
6206                size_t N = mPackageGroups.size();
6207                for (size_t i = 0; i < N; i++) {
6208                    group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
6209                }
6210            } else {
6211                ALOGW("Found multiple library tables, ignoring...");
6212            }
6213        } else {
6214            status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
6215                                          endPos, "ResTable_package:unknown");
6216            if (err != NO_ERROR) {
6217                return (mError=err);
6218            }
6219        }
6220        chunk = (const ResChunk_header*)
6221            (((const uint8_t*)chunk) + csize);
6222    }
6223
6224    return NO_ERROR;
6225}
6226
6227DynamicRefTable::DynamicRefTable(uint8_t packageId)
6228    : mAssignedPackageId(packageId)
6229{
6230    memset(mLookupTable, 0, sizeof(mLookupTable));
6231
6232    // Reserved package ids
6233    mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
6234    mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
6235}
6236
6237status_t DynamicRefTable::load(const ResTable_lib_header* const header)
6238{
6239    const uint32_t entryCount = dtohl(header->count);
6240    const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
6241    const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
6242    if (sizeOfEntries > expectedSize) {
6243        ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
6244                expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
6245        return UNKNOWN_ERROR;
6246    }
6247
6248    const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
6249            dtohl(header->header.headerSize));
6250    for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
6251        uint32_t packageId = dtohl(entry->packageId);
6252        char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
6253        strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
6254        if (kDebugLibNoisy) {
6255            ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
6256                    dtohl(entry->packageId));
6257        }
6258        if (packageId >= 256) {
6259            ALOGE("Bad package id 0x%08x", packageId);
6260            return UNKNOWN_ERROR;
6261        }
6262        mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
6263        entry = entry + 1;
6264    }
6265    return NO_ERROR;
6266}
6267
6268status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
6269    if (mAssignedPackageId != other.mAssignedPackageId) {
6270        return UNKNOWN_ERROR;
6271    }
6272
6273    const size_t entryCount = other.mEntries.size();
6274    for (size_t i = 0; i < entryCount; i++) {
6275        ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
6276        if (index < 0) {
6277            mEntries.add(other.mEntries.keyAt(i), other.mEntries[i]);
6278        } else {
6279            if (other.mEntries[i] != mEntries[index]) {
6280                return UNKNOWN_ERROR;
6281            }
6282        }
6283    }
6284
6285    // Merge the lookup table. No entry can conflict
6286    // (value of 0 means not set).
6287    for (size_t i = 0; i < 256; i++) {
6288        if (mLookupTable[i] != other.mLookupTable[i]) {
6289            if (mLookupTable[i] == 0) {
6290                mLookupTable[i] = other.mLookupTable[i];
6291            } else if (other.mLookupTable[i] != 0) {
6292                return UNKNOWN_ERROR;
6293            }
6294        }
6295    }
6296    return NO_ERROR;
6297}
6298
6299status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
6300{
6301    ssize_t index = mEntries.indexOfKey(packageName);
6302    if (index < 0) {
6303        return UNKNOWN_ERROR;
6304    }
6305    mLookupTable[mEntries.valueAt(index)] = packageId;
6306    return NO_ERROR;
6307}
6308
6309status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
6310    uint32_t res = *resId;
6311    size_t packageId = Res_GETPACKAGE(res) + 1;
6312
6313    if (packageId == APP_PACKAGE_ID) {
6314        // No lookup needs to be done, app package IDs are absolute.
6315        return NO_ERROR;
6316    }
6317
6318    if (packageId == 0) {
6319        // The package ID is 0x00. That means that a shared library is accessing
6320        // its own local resource, so we fix up the resource with the calling
6321        // package ID.
6322        *resId |= ((uint32_t) mAssignedPackageId) << 24;
6323        return NO_ERROR;
6324    }
6325
6326    // Do a proper lookup.
6327    uint8_t translatedId = mLookupTable[packageId];
6328    if (translatedId == 0) {
6329        ALOGV("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
6330                (uint8_t)mAssignedPackageId, (uint8_t)packageId);
6331        for (size_t i = 0; i < 256; i++) {
6332            if (mLookupTable[i] != 0) {
6333                ALOGV("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
6334            }
6335        }
6336        return UNKNOWN_ERROR;
6337    }
6338
6339    *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
6340    return NO_ERROR;
6341}
6342
6343status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
6344    if (value->dataType != Res_value::TYPE_DYNAMIC_REFERENCE) {
6345        return NO_ERROR;
6346    }
6347
6348    status_t err = lookupResourceId(&value->data);
6349    if (err != NO_ERROR) {
6350        return err;
6351    }
6352
6353    value->dataType = Res_value::TYPE_REFERENCE;
6354    return NO_ERROR;
6355}
6356
6357struct IdmapTypeMap {
6358    ssize_t overlayTypeId;
6359    size_t entryOffset;
6360    Vector<uint32_t> entryMap;
6361};
6362
6363status_t ResTable::createIdmap(const ResTable& overlay,
6364        uint32_t targetCrc, uint32_t overlayCrc,
6365        const char* targetPath, const char* overlayPath,
6366        void** outData, size_t* outSize) const
6367{
6368    // see README for details on the format of map
6369    if (mPackageGroups.size() == 0) {
6370        ALOGW("idmap: target package has no package groups, cannot create idmap\n");
6371        return UNKNOWN_ERROR;
6372    }
6373
6374    if (mPackageGroups[0]->packages.size() == 0) {
6375        ALOGW("idmap: target package has no packages in its first package group, "
6376                "cannot create idmap\n");
6377        return UNKNOWN_ERROR;
6378    }
6379
6380    KeyedVector<uint8_t, IdmapTypeMap> map;
6381
6382    // overlaid packages are assumed to contain only one package group
6383    const PackageGroup* pg = mPackageGroups[0];
6384
6385    // starting size is header
6386    *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
6387
6388    // target package id and number of types in map
6389    *outSize += 2 * sizeof(uint16_t);
6390
6391    // overlay packages are assumed to contain only one package group
6392    const ResTable_package* overlayPackageStruct = overlay.mPackageGroups[0]->packages[0]->package;
6393    char16_t tmpName[sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0])];
6394    strcpy16_dtoh(tmpName, overlayPackageStruct->name, sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0]));
6395    const String16 overlayPackage(tmpName);
6396
6397    for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
6398        const TypeList& typeList = pg->types[typeIndex];
6399        if (typeList.isEmpty()) {
6400            continue;
6401        }
6402
6403        const Type* typeConfigs = typeList[0];
6404
6405        IdmapTypeMap typeMap;
6406        typeMap.overlayTypeId = -1;
6407        typeMap.entryOffset = 0;
6408
6409        for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
6410            uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
6411            resource_name resName;
6412            if (!this->getResourceName(resID, false, &resName)) {
6413                if (typeMap.entryMap.isEmpty()) {
6414                    typeMap.entryOffset++;
6415                }
6416                continue;
6417            }
6418
6419            const String16 overlayType(resName.type, resName.typeLen);
6420            const String16 overlayName(resName.name, resName.nameLen);
6421            uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
6422                                                              overlayName.size(),
6423                                                              overlayType.string(),
6424                                                              overlayType.size(),
6425                                                              overlayPackage.string(),
6426                                                              overlayPackage.size());
6427            if (overlayResID == 0) {
6428                if (typeMap.entryMap.isEmpty()) {
6429                    typeMap.entryOffset++;
6430                }
6431                continue;
6432            }
6433
6434            if (typeMap.overlayTypeId == -1) {
6435                typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
6436            }
6437
6438            if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
6439                ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
6440                        " but entries should map to resources of type %02zx",
6441                        resID, overlayResID, typeMap.overlayTypeId);
6442                return BAD_TYPE;
6443            }
6444
6445            if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
6446                // pad with 0xffffffff's (indicating non-existing entries) before adding this entry
6447                size_t index = typeMap.entryMap.size();
6448                size_t numItems = entryIndex - (typeMap.entryOffset + index);
6449                if (typeMap.entryMap.insertAt(0xffffffff, index, numItems) < 0) {
6450                    return NO_MEMORY;
6451                }
6452            }
6453            typeMap.entryMap.add(Res_GETENTRY(overlayResID));
6454        }
6455
6456        if (!typeMap.entryMap.isEmpty()) {
6457            if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
6458                return NO_MEMORY;
6459            }
6460            *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
6461        }
6462    }
6463
6464    if (map.isEmpty()) {
6465        ALOGW("idmap: no resources in overlay package present in base package");
6466        return UNKNOWN_ERROR;
6467    }
6468
6469    if ((*outData = malloc(*outSize)) == NULL) {
6470        return NO_MEMORY;
6471    }
6472
6473    uint32_t* data = (uint32_t*)*outData;
6474    *data++ = htodl(IDMAP_MAGIC);
6475    *data++ = htodl(IDMAP_CURRENT_VERSION);
6476    *data++ = htodl(targetCrc);
6477    *data++ = htodl(overlayCrc);
6478    const char* paths[] = { targetPath, overlayPath };
6479    for (int j = 0; j < 2; ++j) {
6480        char* p = (char*)data;
6481        const char* path = paths[j];
6482        const size_t I = strlen(path);
6483        if (I > 255) {
6484            ALOGV("path exceeds expected 255 characters: %s\n", path);
6485            return UNKNOWN_ERROR;
6486        }
6487        for (size_t i = 0; i < 256; ++i) {
6488            *p++ = i < I ? path[i] : '\0';
6489        }
6490        data += 256 / sizeof(uint32_t);
6491    }
6492    const size_t mapSize = map.size();
6493    uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
6494    *typeData++ = htods(pg->id);
6495    *typeData++ = htods(mapSize);
6496    for (size_t i = 0; i < mapSize; ++i) {
6497        uint8_t targetTypeId = map.keyAt(i);
6498        const IdmapTypeMap& typeMap = map[i];
6499        *typeData++ = htods(targetTypeId + 1);
6500        *typeData++ = htods(typeMap.overlayTypeId);
6501        *typeData++ = htods(typeMap.entryMap.size());
6502        *typeData++ = htods(typeMap.entryOffset);
6503
6504        const size_t entryCount = typeMap.entryMap.size();
6505        uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
6506        for (size_t j = 0; j < entryCount; j++) {
6507            entries[j] = htodl(typeMap.entryMap[j]);
6508        }
6509        typeData += entryCount * 2;
6510    }
6511
6512    return NO_ERROR;
6513}
6514
6515bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
6516                            uint32_t* pVersion,
6517                            uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
6518                            String8* pTargetPath, String8* pOverlayPath)
6519{
6520    const uint32_t* map = (const uint32_t*)idmap;
6521    if (!assertIdmapHeader(map, sizeBytes)) {
6522        return false;
6523    }
6524    if (pVersion) {
6525        *pVersion = dtohl(map[1]);
6526    }
6527    if (pTargetCrc) {
6528        *pTargetCrc = dtohl(map[2]);
6529    }
6530    if (pOverlayCrc) {
6531        *pOverlayCrc = dtohl(map[3]);
6532    }
6533    if (pTargetPath) {
6534        pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
6535    }
6536    if (pOverlayPath) {
6537        pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
6538    }
6539    return true;
6540}
6541
6542
6543#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
6544
6545#define CHAR16_ARRAY_EQ(constant, var, len) \
6546        (((len) == (sizeof(constant)/sizeof((constant)[0]))) && (0 == memcmp((var), (constant), (len))))
6547
6548static void print_complex(uint32_t complex, bool isFraction)
6549{
6550    const float MANTISSA_MULT =
6551        1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
6552    const float RADIX_MULTS[] = {
6553        1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
6554        1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
6555    };
6556
6557    float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
6558                   <<Res_value::COMPLEX_MANTISSA_SHIFT))
6559            * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
6560                            & Res_value::COMPLEX_RADIX_MASK];
6561    printf("%f", value);
6562
6563    if (!isFraction) {
6564        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6565            case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
6566            case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
6567            case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
6568            case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
6569            case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
6570            case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
6571            default: printf(" (unknown unit)"); break;
6572        }
6573    } else {
6574        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6575            case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
6576            case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
6577            default: printf(" (unknown unit)"); break;
6578        }
6579    }
6580}
6581
6582// Normalize a string for output
6583String8 ResTable::normalizeForOutput( const char *input )
6584{
6585    String8 ret;
6586    char buff[2];
6587    buff[1] = '\0';
6588
6589    while (*input != '\0') {
6590        switch (*input) {
6591            // All interesting characters are in the ASCII zone, so we are making our own lives
6592            // easier by scanning the string one byte at a time.
6593        case '\\':
6594            ret += "\\\\";
6595            break;
6596        case '\n':
6597            ret += "\\n";
6598            break;
6599        case '"':
6600            ret += "\\\"";
6601            break;
6602        default:
6603            buff[0] = *input;
6604            ret += buff;
6605            break;
6606        }
6607
6608        input++;
6609    }
6610
6611    return ret;
6612}
6613
6614void ResTable::print_value(const Package* pkg, const Res_value& value) const
6615{
6616    if (value.dataType == Res_value::TYPE_NULL) {
6617        if (value.data == Res_value::DATA_NULL_UNDEFINED) {
6618            printf("(null)\n");
6619        } else if (value.data == Res_value::DATA_NULL_EMPTY) {
6620            printf("(null empty)\n");
6621        } else {
6622            // This should never happen.
6623            printf("(null) 0x%08x\n", value.data);
6624        }
6625    } else if (value.dataType == Res_value::TYPE_REFERENCE) {
6626        printf("(reference) 0x%08x\n", value.data);
6627    } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
6628        printf("(dynamic reference) 0x%08x\n", value.data);
6629    } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
6630        printf("(attribute) 0x%08x\n", value.data);
6631    } else if (value.dataType == Res_value::TYPE_STRING) {
6632        size_t len;
6633        const char* str8 = pkg->header->values.string8At(
6634                value.data, &len);
6635        if (str8 != NULL) {
6636            printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
6637        } else {
6638            const char16_t* str16 = pkg->header->values.stringAt(
6639                    value.data, &len);
6640            if (str16 != NULL) {
6641                printf("(string16) \"%s\"\n",
6642                    normalizeForOutput(String8(str16, len).string()).string());
6643            } else {
6644                printf("(string) null\n");
6645            }
6646        }
6647    } else if (value.dataType == Res_value::TYPE_FLOAT) {
6648        printf("(float) %g\n", *(const float*)&value.data);
6649    } else if (value.dataType == Res_value::TYPE_DIMENSION) {
6650        printf("(dimension) ");
6651        print_complex(value.data, false);
6652        printf("\n");
6653    } else if (value.dataType == Res_value::TYPE_FRACTION) {
6654        printf("(fraction) ");
6655        print_complex(value.data, true);
6656        printf("\n");
6657    } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
6658            || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
6659        printf("(color) #%08x\n", value.data);
6660    } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
6661        printf("(boolean) %s\n", value.data ? "true" : "false");
6662    } else if (value.dataType >= Res_value::TYPE_FIRST_INT
6663            || value.dataType <= Res_value::TYPE_LAST_INT) {
6664        printf("(int) 0x%08x or %d\n", value.data, value.data);
6665    } else {
6666        printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
6667               (int)value.dataType, (int)value.data,
6668               (int)value.size, (int)value.res0);
6669    }
6670}
6671
6672void ResTable::print(bool inclValues) const
6673{
6674    if (mError != 0) {
6675        printf("mError=0x%x (%s)\n", mError, strerror(mError));
6676    }
6677    size_t pgCount = mPackageGroups.size();
6678    printf("Package Groups (%d)\n", (int)pgCount);
6679    for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
6680        const PackageGroup* pg = mPackageGroups[pgIndex];
6681        printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
6682                (int)pgIndex, pg->id, (int)pg->packages.size(),
6683                String8(pg->name).string());
6684
6685        const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
6686        const size_t refEntryCount = refEntries.size();
6687        if (refEntryCount > 0) {
6688            printf("  DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
6689            for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
6690                printf("    0x%02x -> %s\n",
6691                        refEntries.valueAt(refIndex),
6692                        String8(refEntries.keyAt(refIndex)).string());
6693            }
6694            printf("\n");
6695        }
6696
6697        int packageId = pg->id;
6698        size_t pkgCount = pg->packages.size();
6699        for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
6700            const Package* pkg = pg->packages[pkgIndex];
6701            // Use a package's real ID, since the ID may have been assigned
6702            // if this package is a shared library.
6703            packageId = pkg->package->id;
6704            char16_t tmpName[sizeof(pkg->package->name)/sizeof(pkg->package->name[0])];
6705            strcpy16_dtoh(tmpName, pkg->package->name, sizeof(pkg->package->name)/sizeof(pkg->package->name[0]));
6706            printf("  Package %d id=0x%02x name=%s\n", (int)pkgIndex,
6707                    pkg->package->id, String8(tmpName).string());
6708        }
6709
6710        for (size_t typeIndex=0; typeIndex < pg->types.size(); typeIndex++) {
6711            const TypeList& typeList = pg->types[typeIndex];
6712            if (typeList.isEmpty()) {
6713                continue;
6714            }
6715            const Type* typeConfigs = typeList[0];
6716            const size_t NTC = typeConfigs->configs.size();
6717            printf("    type %d configCount=%d entryCount=%d\n",
6718                   (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
6719            if (typeConfigs->typeSpecFlags != NULL) {
6720                for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
6721                    uint32_t resID = (0xff000000 & ((packageId)<<24))
6722                                | (0x00ff0000 & ((typeIndex+1)<<16))
6723                                | (0x0000ffff & (entryIndex));
6724                    // Since we are creating resID without actually
6725                    // iterating over them, we have no idea which is a
6726                    // dynamic reference. We must check.
6727                    if (packageId == 0) {
6728                        pg->dynamicRefTable.lookupResourceId(&resID);
6729                    }
6730
6731                    resource_name resName;
6732                    if (this->getResourceName(resID, true, &resName)) {
6733                        String8 type8;
6734                        String8 name8;
6735                        if (resName.type8 != NULL) {
6736                            type8 = String8(resName.type8, resName.typeLen);
6737                        } else {
6738                            type8 = String8(resName.type, resName.typeLen);
6739                        }
6740                        if (resName.name8 != NULL) {
6741                            name8 = String8(resName.name8, resName.nameLen);
6742                        } else {
6743                            name8 = String8(resName.name, resName.nameLen);
6744                        }
6745                        printf("      spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
6746                            resID,
6747                            CHAR16_TO_CSTR(resName.package, resName.packageLen),
6748                            type8.string(), name8.string(),
6749                            dtohl(typeConfigs->typeSpecFlags[entryIndex]));
6750                    } else {
6751                        printf("      INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
6752                    }
6753                }
6754            }
6755            for (size_t configIndex=0; configIndex<NTC; configIndex++) {
6756                const ResTable_type* type = typeConfigs->configs[configIndex];
6757                if ((((uint64_t)type)&0x3) != 0) {
6758                    printf("      NON-INTEGER ResTable_type ADDRESS: %p\n", type);
6759                    continue;
6760                }
6761
6762                // Always copy the config, as fields get added and we need to
6763                // set the defaults.
6764                ResTable_config thisConfig;
6765                thisConfig.copyFromDtoH(type->config);
6766
6767                String8 configStr = thisConfig.toString();
6768                printf("      config %s:\n", configStr.size() > 0
6769                        ? configStr.string() : "(default)");
6770                size_t entryCount = dtohl(type->entryCount);
6771                uint32_t entriesStart = dtohl(type->entriesStart);
6772                if ((entriesStart&0x3) != 0) {
6773                    printf("      NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n", entriesStart);
6774                    continue;
6775                }
6776                uint32_t typeSize = dtohl(type->header.size);
6777                if ((typeSize&0x3) != 0) {
6778                    printf("      NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
6779                    continue;
6780                }
6781                for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
6782                    const uint32_t* const eindex = (const uint32_t*)
6783                        (((const uint8_t*)type) + dtohs(type->header.headerSize));
6784
6785                    uint32_t thisOffset = dtohl(eindex[entryIndex]);
6786                    if (thisOffset == ResTable_type::NO_ENTRY) {
6787                        continue;
6788                    }
6789
6790                    uint32_t resID = (0xff000000 & ((packageId)<<24))
6791                                | (0x00ff0000 & ((typeIndex+1)<<16))
6792                                | (0x0000ffff & (entryIndex));
6793                    if (packageId == 0) {
6794                        pg->dynamicRefTable.lookupResourceId(&resID);
6795                    }
6796                    resource_name resName;
6797                    if (this->getResourceName(resID, true, &resName)) {
6798                        String8 type8;
6799                        String8 name8;
6800                        if (resName.type8 != NULL) {
6801                            type8 = String8(resName.type8, resName.typeLen);
6802                        } else {
6803                            type8 = String8(resName.type, resName.typeLen);
6804                        }
6805                        if (resName.name8 != NULL) {
6806                            name8 = String8(resName.name8, resName.nameLen);
6807                        } else {
6808                            name8 = String8(resName.name, resName.nameLen);
6809                        }
6810                        printf("        resource 0x%08x %s:%s/%s: ", resID,
6811                                CHAR16_TO_CSTR(resName.package, resName.packageLen),
6812                                type8.string(), name8.string());
6813                    } else {
6814                        printf("        INVALID RESOURCE 0x%08x: ", resID);
6815                    }
6816                    if ((thisOffset&0x3) != 0) {
6817                        printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
6818                        continue;
6819                    }
6820                    if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
6821                        printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
6822                               entriesStart, thisOffset, typeSize);
6823                        continue;
6824                    }
6825
6826                    const ResTable_entry* ent = (const ResTable_entry*)
6827                        (((const uint8_t*)type) + entriesStart + thisOffset);
6828                    if (((entriesStart + thisOffset)&0x3) != 0) {
6829                        printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
6830                             (entriesStart + thisOffset));
6831                        continue;
6832                    }
6833
6834                    uintptr_t esize = dtohs(ent->size);
6835                    if ((esize&0x3) != 0) {
6836                        printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
6837                        continue;
6838                    }
6839                    if ((thisOffset+esize) > typeSize) {
6840                        printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
6841                               entriesStart, thisOffset, (void *)esize, typeSize);
6842                        continue;
6843                    }
6844
6845                    const Res_value* valuePtr = NULL;
6846                    const ResTable_map_entry* bagPtr = NULL;
6847                    Res_value value;
6848                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
6849                        printf("<bag>");
6850                        bagPtr = (const ResTable_map_entry*)ent;
6851                    } else {
6852                        valuePtr = (const Res_value*)
6853                            (((const uint8_t*)ent) + esize);
6854                        value.copyFrom_dtoh(*valuePtr);
6855                        printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
6856                               (int)value.dataType, (int)value.data,
6857                               (int)value.size, (int)value.res0);
6858                    }
6859
6860                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
6861                        printf(" (PUBLIC)");
6862                    }
6863                    printf("\n");
6864
6865                    if (inclValues) {
6866                        if (valuePtr != NULL) {
6867                            printf("          ");
6868                            print_value(typeConfigs->package, value);
6869                        } else if (bagPtr != NULL) {
6870                            const int N = dtohl(bagPtr->count);
6871                            const uint8_t* baseMapPtr = (const uint8_t*)ent;
6872                            size_t mapOffset = esize;
6873                            const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6874                            const uint32_t parent = dtohl(bagPtr->parent.ident);
6875                            uint32_t resolvedParent = parent;
6876                            if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
6877                                status_t err = pg->dynamicRefTable.lookupResourceId(&resolvedParent);
6878                                if (err != NO_ERROR) {
6879                                    resolvedParent = 0;
6880                                }
6881                            }
6882                            printf("          Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
6883                                    parent, resolvedParent, N);
6884                            for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
6885                                printf("          #%i (Key=0x%08x): ",
6886                                    i, dtohl(mapPtr->name.ident));
6887                                value.copyFrom_dtoh(mapPtr->value);
6888                                print_value(typeConfigs->package, value);
6889                                const size_t size = dtohs(mapPtr->value.size);
6890                                mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
6891                                mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6892                            }
6893                        }
6894                    }
6895                }
6896            }
6897        }
6898    }
6899}
6900
6901}   // namespace android
6902