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-rw-r--r--libs/utils/ResourceTypes.cpp404
1 files changed, 351 insertions, 53 deletions
diff --git a/libs/utils/ResourceTypes.cpp b/libs/utils/ResourceTypes.cpp
index 7197ad7..a6cdb23 100644
--- a/libs/utils/ResourceTypes.cpp
+++ b/libs/utils/ResourceTypes.cpp
@@ -63,6 +63,10 @@ namespace android {
#endif
#endif
+#define IDMAP_MAGIC 0x706d6469
+// size measured in sizeof(uint32_t)
+#define IDMAP_HEADER_SIZE (ResTable::IDMAP_HEADER_SIZE_BYTES / sizeof(uint32_t))
+
static void printToLogFunc(void* cookie, const char* txt)
{
LOGV("%s", txt);
@@ -214,6 +218,81 @@ static void deserializeInternal(const void* inData, Res_png_9patch* outData) {
outData->colors = (uint32_t*) data;
}
+static bool assertIdmapHeader(const uint32_t* map, size_t sizeBytes)
+{
+ if (sizeBytes < ResTable::IDMAP_HEADER_SIZE_BYTES) {
+ LOGW("idmap assertion failed: size=%d bytes\n", sizeBytes);
+ return false;
+ }
+ if (*map != htodl(IDMAP_MAGIC)) { // htodl: map data expected to be in correct endianess
+ LOGW("idmap assertion failed: invalid magic found (is 0x%08x, expected 0x%08x)\n",
+ *map, htodl(IDMAP_MAGIC));
+ return false;
+ }
+ return true;
+}
+
+static status_t idmapLookup(const uint32_t* map, size_t sizeBytes, uint32_t key, uint32_t* outValue)
+{
+ // see README for details on the format of map
+ if (!assertIdmapHeader(map, sizeBytes)) {
+ return UNKNOWN_ERROR;
+ }
+ map = map + IDMAP_HEADER_SIZE; // skip ahead to data segment
+ // size of data block, in uint32_t
+ const size_t size = (sizeBytes - ResTable::IDMAP_HEADER_SIZE_BYTES) / sizeof(uint32_t);
+ const uint32_t type = Res_GETTYPE(key) + 1; // add one, idmap stores "public" type id
+ const uint32_t entry = Res_GETENTRY(key);
+ const uint32_t typeCount = *map;
+
+ if (type > typeCount) {
+ LOGW("Resource ID map: type=%d exceeds number of types=%d\n", type, typeCount);
+ return UNKNOWN_ERROR;
+ }
+ if (typeCount > size) {
+ LOGW("Resource ID map: number of types=%d exceeds size of map=%d\n", typeCount, size);
+ return UNKNOWN_ERROR;
+ }
+ const uint32_t typeOffset = map[type];
+ if (typeOffset == 0) {
+ *outValue = 0;
+ return NO_ERROR;
+ }
+ if (typeOffset + 1 > size) {
+ LOGW("Resource ID map: type offset=%d exceeds reasonable value, size of map=%d\n",
+ typeOffset, size);
+ return UNKNOWN_ERROR;
+ }
+ const uint32_t entryCount = map[typeOffset];
+ const uint32_t entryOffset = map[typeOffset + 1];
+ if (entryCount == 0 || entry < entryOffset || entry - entryOffset > entryCount - 1) {
+ *outValue = 0;
+ return NO_ERROR;
+ }
+ const uint32_t index = typeOffset + 2 + entry - entryOffset;
+ if (index > size) {
+ LOGW("Resource ID map: entry index=%d exceeds size of map=%d\n", index, size);
+ *outValue = 0;
+ return NO_ERROR;
+ }
+ *outValue = map[index];
+
+ return NO_ERROR;
+}
+
+static status_t getIdmapPackageId(const uint32_t* map, size_t mapSize, uint32_t *outId)
+{
+ if (!assertIdmapHeader(map, mapSize)) {
+ return UNKNOWN_ERROR;
+ }
+ const uint32_t* p = map + IDMAP_HEADER_SIZE + 1;
+ while (*p == 0) {
+ ++p;
+ }
+ *outId = (map[*p + IDMAP_HEADER_SIZE + 2] >> 24) & 0x000000ff;
+ return NO_ERROR;
+}
+
Res_png_9patch* Res_png_9patch::deserialize(const void* inData)
{
if (sizeof(void*) != sizeof(int32_t)) {
@@ -1290,7 +1369,13 @@ status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
struct ResTable::Header
{
- Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL) { }
+ Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
+ resourceIDMap(NULL), resourceIDMapSize(0) { }
+
+ ~Header()
+ {
+ free(resourceIDMap);
+ }
ResTable* const owner;
void* ownedData;
@@ -1301,6 +1386,8 @@ struct ResTable::Header
void* cookie;
ResStringPool values;
+ uint32_t* resourceIDMap;
+ size_t resourceIDMapSize;
};
struct ResTable::Type
@@ -1716,12 +1803,13 @@ inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
}
-status_t ResTable::add(const void* data, size_t size, void* cookie, bool copyData)
+status_t ResTable::add(const void* data, size_t size, void* cookie, bool copyData,
+ const void* idmap)
{
- return add(data, size, cookie, NULL, copyData);
+ return add(data, size, cookie, NULL, copyData, reinterpret_cast<const Asset*>(idmap));
}
-status_t ResTable::add(Asset* asset, void* cookie, bool copyData)
+status_t ResTable::add(Asset* asset, void* cookie, bool copyData, const void* idmap)
{
const void* data = asset->getBuffer(true);
if (data == NULL) {
@@ -1729,7 +1817,7 @@ status_t ResTable::add(Asset* asset, void* cookie, bool copyData)
return UNKNOWN_ERROR;
}
size_t size = (size_t)asset->getLength();
- return add(data, size, cookie, asset, copyData);
+ return add(data, size, cookie, asset, copyData, reinterpret_cast<const Asset*>(idmap));
}
status_t ResTable::add(ResTable* src)
@@ -1757,19 +1845,30 @@ status_t ResTable::add(ResTable* src)
}
status_t ResTable::add(const void* data, size_t size, void* cookie,
- Asset* asset, bool copyData)
+ Asset* asset, bool copyData, const Asset* idmap)
{
if (!data) return NO_ERROR;
Header* header = new Header(this);
header->index = mHeaders.size();
header->cookie = cookie;
+ if (idmap != NULL) {
+ const size_t idmap_size = idmap->getLength();
+ const void* idmap_data = const_cast<Asset*>(idmap)->getBuffer(true);
+ header->resourceIDMap = (uint32_t*)malloc(idmap_size);
+ if (header->resourceIDMap == NULL) {
+ delete header;
+ return (mError = NO_MEMORY);
+ }
+ memcpy((void*)header->resourceIDMap, idmap_data, idmap_size);
+ header->resourceIDMapSize = idmap_size;
+ }
mHeaders.add(header);
const bool notDeviceEndian = htods(0xf0) != 0xf0;
LOAD_TABLE_NOISY(
- LOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%p, asset=%p, copy=%d\n",
- data, size, cookie, asset, copyData));
+ LOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%p, asset=%p, copy=%d "
+ "idmap=%p\n", data, size, cookie, asset, copyData, idmap));
if (copyData || notDeviceEndian) {
header->ownedData = malloc(size);
@@ -1836,7 +1935,16 @@ status_t ResTable::add(const void* data, size_t size, void* cookie,
dtohl(header->header->packageCount));
return (mError=BAD_TYPE);
}
- if (parsePackage((ResTable_package*)chunk, header) != NO_ERROR) {
+ uint32_t idmap_id = 0;
+ if (idmap != NULL) {
+ uint32_t tmp;
+ if (getIdmapPackageId(header->resourceIDMap,
+ header->resourceIDMapSize,
+ &tmp) == NO_ERROR) {
+ idmap_id = tmp;
+ }
+ }
+ if (parsePackage((ResTable_package*)chunk, header, idmap_id) != NO_ERROR) {
return mError;
}
curPackage++;
@@ -1858,6 +1966,7 @@ status_t ResTable::add(const void* data, size_t size, void* cookie,
if (mError != NO_ERROR) {
LOGW("No string values found in resource table!");
}
+
TABLE_NOISY(LOGV("Returning from add with mError=%d\n", mError));
return mError;
}
@@ -2002,17 +2111,38 @@ ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag
size_t ip = grp->packages.size();
while (ip > 0) {
ip--;
+ int T = t;
+ int E = e;
const Package* const package = grp->packages[ip];
+ if (package->header->resourceIDMap) {
+ uint32_t overlayResID = 0x0;
+ status_t retval = idmapLookup(package->header->resourceIDMap,
+ package->header->resourceIDMapSize,
+ resID, &overlayResID);
+ if (retval == NO_ERROR && overlayResID != 0x0) {
+ // for this loop iteration, this is the type and entry we really want
+ LOGV("resource map 0x%08x -> 0x%08x\n", resID, overlayResID);
+ T = Res_GETTYPE(overlayResID);
+ E = Res_GETENTRY(overlayResID);
+ } else {
+ // resource not present in overlay package, continue with the next package
+ continue;
+ }
+ }
const ResTable_type* type;
const ResTable_entry* entry;
const Type* typeClass;
- ssize_t offset = getEntry(package, t, e, desiredConfig, &type, &entry, &typeClass);
+ ssize_t offset = getEntry(package, T, E, desiredConfig, &type, &entry, &typeClass);
if (offset <= 0) {
- if (offset < 0) {
+ // No {entry, appropriate config} pair found in package. If this
+ // package is an overlay package (ip != 0), this simply means the
+ // overlay package did not specify a default.
+ // Non-overlay packages are still required to provide a default.
+ if (offset < 0 && ip == 0) {
LOGW("Failure getting entry for 0x%08x (t=%d e=%d) in package %zd (error %d)\n",
- resID, t, e, ip, (int)offset);
+ resID, T, E, ip, (int)offset);
rc = offset;
goto out;
}
@@ -2044,13 +2174,16 @@ ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag
if (outSpecFlags != NULL) {
if (typeClass->typeSpecFlags != NULL) {
- *outSpecFlags |= dtohl(typeClass->typeSpecFlags[e]);
+ *outSpecFlags |= dtohl(typeClass->typeSpecFlags[E]);
} else {
*outSpecFlags = -1;
}
}
-
- if (bestPackage != NULL && bestItem.isMoreSpecificThan(thisConfig)) {
+
+ if (bestPackage != NULL &&
+ (bestItem.isMoreSpecificThan(thisConfig) || bestItem.diff(thisConfig) == 0)) {
+ // Discard thisConfig not only if bestItem is more specific, but also if the two configs
+ // are identical (diff == 0), or overlay packages will not take effect.
continue;
}
@@ -2250,21 +2383,45 @@ ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
TABLE_NOISY(LOGI("Building bag: %p\n", (void*)resID));
+ ResTable_config bestConfig;
+ memset(&bestConfig, 0, sizeof(bestConfig));
+
// Now collect all bag attributes from all packages.
size_t ip = grp->packages.size();
while (ip > 0) {
ip--;
+ int T = t;
+ int E = e;
const Package* const package = grp->packages[ip];
+ if (package->header->resourceIDMap) {
+ uint32_t overlayResID = 0x0;
+ status_t retval = idmapLookup(package->header->resourceIDMap,
+ package->header->resourceIDMapSize,
+ resID, &overlayResID);
+ if (retval == NO_ERROR && overlayResID != 0x0) {
+ // for this loop iteration, this is the type and entry we really want
+ LOGV("resource map 0x%08x -> 0x%08x\n", resID, overlayResID);
+ T = Res_GETTYPE(overlayResID);
+ E = Res_GETENTRY(overlayResID);
+ } else {
+ // resource not present in overlay package, continue with the next package
+ continue;
+ }
+ }
const ResTable_type* type;
const ResTable_entry* entry;
const Type* typeClass;
- LOGV("Getting entry pkg=%p, t=%d, e=%d\n", package, t, e);
- ssize_t offset = getEntry(package, t, e, &mParams, &type, &entry, &typeClass);
+ LOGV("Getting entry pkg=%p, t=%d, e=%d\n", package, T, E);
+ ssize_t offset = getEntry(package, T, E, &mParams, &type, &entry, &typeClass);
LOGV("Resulting offset=%d\n", offset);
if (offset <= 0) {
- if (offset < 0) {
+ // No {entry, appropriate config} pair found in package. If this
+ // package is an overlay package (ip != 0), this simply means the
+ // overlay package did not specify a default.
+ // Non-overlay packages are still required to provide a default.
+ if (offset < 0 && ip == 0) {
if (set) free(set);
return offset;
}
@@ -2277,6 +2434,15 @@ ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
continue;
}
+ if (set != NULL && !type->config.isBetterThan(bestConfig, NULL)) {
+ continue;
+ }
+ bestConfig = type->config;
+ if (set) {
+ free(set);
+ set = NULL;
+ }
+
const uint16_t entrySize = dtohs(entry->size);
const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
? dtohl(((const ResTable_map_entry*)entry)->parent.ident) : 0;
@@ -2288,43 +2454,41 @@ ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
TABLE_NOISY(LOGI("Found map: size=%p parent=%p count=%d\n",
entrySize, parent, count));
- if (set == NULL) {
- // If this map inherits from another, we need to start
- // with its parent's values. Otherwise start out empty.
- TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
- entrySize, parent));
- if (parent) {
- const bag_entry* parentBag;
- uint32_t parentTypeSpecFlags = 0;
- const ssize_t NP = getBagLocked(parent, &parentBag, &parentTypeSpecFlags);
- const size_t NT = ((NP >= 0) ? NP : 0) + N;
- set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
- if (set == NULL) {
- return NO_MEMORY;
- }
- if (NP > 0) {
- memcpy(set+1, parentBag, NP*sizeof(bag_entry));
- set->numAttrs = NP;
- TABLE_NOISY(LOGI("Initialized new bag with %d inherited attributes.\n", NP));
- } else {
- TABLE_NOISY(LOGI("Initialized new bag with no inherited attributes.\n"));
- set->numAttrs = 0;
- }
- set->availAttrs = NT;
- set->typeSpecFlags = parentTypeSpecFlags;
+ // If this map inherits from another, we need to start
+ // with its parent's values. Otherwise start out empty.
+ TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
+ entrySize, parent));
+ if (parent) {
+ const bag_entry* parentBag;
+ uint32_t parentTypeSpecFlags = 0;
+ const ssize_t NP = getBagLocked(parent, &parentBag, &parentTypeSpecFlags);
+ const size_t NT = ((NP >= 0) ? NP : 0) + N;
+ set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
+ if (set == NULL) {
+ return NO_MEMORY;
+ }
+ if (NP > 0) {
+ memcpy(set+1, parentBag, NP*sizeof(bag_entry));
+ set->numAttrs = NP;
+ TABLE_NOISY(LOGI("Initialized new bag with %d inherited attributes.\n", NP));
} else {
- set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
- if (set == NULL) {
- return NO_MEMORY;
- }
+ TABLE_NOISY(LOGI("Initialized new bag with no inherited attributes.\n"));
set->numAttrs = 0;
- set->availAttrs = N;
- set->typeSpecFlags = 0;
}
+ set->availAttrs = NT;
+ set->typeSpecFlags = parentTypeSpecFlags;
+ } else {
+ set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
+ if (set == NULL) {
+ return NO_MEMORY;
+ }
+ set->numAttrs = 0;
+ set->availAttrs = N;
+ set->typeSpecFlags = 0;
}
if (typeClass->typeSpecFlags != NULL) {
- set->typeSpecFlags |= dtohl(typeClass->typeSpecFlags[e]);
+ set->typeSpecFlags |= dtohl(typeClass->typeSpecFlags[E]);
} else {
set->typeSpecFlags = -1;
}
@@ -3862,7 +4026,7 @@ ssize_t ResTable::getEntry(
}
status_t ResTable::parsePackage(const ResTable_package* const pkg,
- const Header* const header)
+ const Header* const header, uint32_t idmap_id)
{
const uint8_t* base = (const uint8_t*)pkg;
status_t err = validate_chunk(&pkg->header, sizeof(*pkg),
@@ -3896,8 +4060,12 @@ status_t ResTable::parsePackage(const ResTable_package* const pkg,
Package* package = NULL;
PackageGroup* group = NULL;
- uint32_t id = dtohl(pkg->id);
- if (id != 0 && id < 256) {
+ uint32_t id = idmap_id != 0 ? idmap_id : dtohl(pkg->id);
+ // If at this point id == 0, pkg is an overlay package without a
+ // corresponding idmap. During regular usage, overlay packages are
+ // always loaded alongside their idmaps, but during idmap creation
+ // the package is temporarily loaded by itself.
+ if (id < 256) {
package = new Package(this, header, pkg);
if (package == NULL) {
@@ -3950,7 +4118,7 @@ status_t ResTable::parsePackage(const ResTable_package* const pkg,
return (mError=err);
}
} else {
- LOG_ALWAYS_FATAL("Skins not supported!");
+ LOG_ALWAYS_FATAL("Package id out of range");
return NO_ERROR;
}
@@ -4101,6 +4269,136 @@ status_t ResTable::parsePackage(const ResTable_package* const pkg,
return NO_ERROR;
}
+status_t ResTable::createIdmap(const ResTable& overlay, uint32_t originalCrc, uint32_t overlayCrc,
+ void** outData, size_t* outSize) const
+{
+ // see README for details on the format of map
+ if (mPackageGroups.size() == 0) {
+ return UNKNOWN_ERROR;
+ }
+ if (mPackageGroups[0]->packages.size() == 0) {
+ return UNKNOWN_ERROR;
+ }
+
+ Vector<Vector<uint32_t> > map;
+ const PackageGroup* pg = mPackageGroups[0];
+ const Package* pkg = pg->packages[0];
+ size_t typeCount = pkg->types.size();
+ // starting size is header + first item (number of types in map)
+ *outSize = (IDMAP_HEADER_SIZE + 1) * sizeof(uint32_t);
+ const String16 overlayPackage(overlay.mPackageGroups[0]->packages[0]->package->name);
+ const uint32_t pkg_id = pkg->package->id << 24;
+
+ for (size_t typeIndex = 0; typeIndex < typeCount; ++typeIndex) {
+ ssize_t offset = -1;
+ const Type* typeConfigs = pkg->getType(typeIndex);
+ ssize_t mapIndex = map.add();
+ if (mapIndex < 0) {
+ return NO_MEMORY;
+ }
+ Vector<uint32_t>& vector = map.editItemAt(mapIndex);
+ for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
+ uint32_t resID = (0xff000000 & ((pkg->package->id)<<24))
+ | (0x00ff0000 & ((typeIndex+1)<<16))
+ | (0x0000ffff & (entryIndex));
+ resource_name resName;
+ if (!this->getResourceName(resID, &resName)) {
+ return UNKNOWN_ERROR;
+ }
+
+ const String16 overlayType(resName.type, resName.typeLen);
+ const String16 overlayName(resName.name, resName.nameLen);
+ uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
+ overlayName.size(),
+ overlayType.string(),
+ overlayType.size(),
+ overlayPackage.string(),
+ overlayPackage.size());
+ if (overlayResID != 0) {
+ // overlay package has package ID == 0, use original package's ID instead
+ overlayResID |= pkg_id;
+ }
+ vector.push(overlayResID);
+ if (overlayResID != 0 && offset == -1) {
+ offset = Res_GETENTRY(resID);
+ }
+#if 0
+ if (overlayResID != 0) {
+ LOGD("%s/%s 0x%08x -> 0x%08x\n",
+ String8(String16(resName.type)).string(),
+ String8(String16(resName.name)).string(),
+ resID, overlayResID);
+ }
+#endif
+ }
+
+ if (offset != -1) {
+ // shave off leading and trailing entries which lack overlay values
+ vector.removeItemsAt(0, offset);
+ vector.insertAt((uint32_t)offset, 0, 1);
+ while (vector.top() == 0) {
+ vector.pop();
+ }
+ // reserve space for number and offset of entries, and the actual entries
+ *outSize += (2 + vector.size()) * sizeof(uint32_t);
+ } else {
+ // no entries of current type defined in overlay package
+ vector.clear();
+ // reserve space for type offset
+ *outSize += 1 * sizeof(uint32_t);
+ }
+ }
+
+ if ((*outData = malloc(*outSize)) == NULL) {
+ return NO_MEMORY;
+ }
+ uint32_t* data = (uint32_t*)*outData;
+ *data++ = htodl(IDMAP_MAGIC);
+ *data++ = htodl(originalCrc);
+ *data++ = htodl(overlayCrc);
+ const size_t mapSize = map.size();
+ *data++ = htodl(mapSize);
+ size_t offset = mapSize;
+ for (size_t i = 0; i < mapSize; ++i) {
+ const Vector<uint32_t>& vector = map.itemAt(i);
+ const size_t N = vector.size();
+ if (N == 0) {
+ *data++ = htodl(0);
+ } else {
+ offset++;
+ *data++ = htodl(offset);
+ offset += N;
+ }
+ }
+ for (size_t i = 0; i < mapSize; ++i) {
+ const Vector<uint32_t>& vector = map.itemAt(i);
+ const size_t N = vector.size();
+ if (N == 0) {
+ continue;
+ }
+ *data++ = htodl(N - 1); // do not count the offset (which is vector's first element)
+ for (size_t j = 0; j < N; ++j) {
+ const uint32_t& overlayResID = vector.itemAt(j);
+ *data++ = htodl(overlayResID);
+ }
+ }
+
+ return NO_ERROR;
+}
+
+bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
+ uint32_t* pOriginalCrc, uint32_t* pOverlayCrc)
+{
+ const uint32_t* map = (const uint32_t*)idmap;
+ if (!assertIdmapHeader(map, sizeBytes)) {
+ return false;
+ }
+ *pOriginalCrc = map[1];
+ *pOverlayCrc = map[2];
+ return true;
+}
+
+
#ifndef HAVE_ANDROID_OS
#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
generated by cgit v1.1 at 2024-08-12 09:55:26 +0000