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IDBObjectStore.cpp
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IDBObjectStore.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "IDBObjectStore.h"
#include "FileInfo.h"
#include "IDBCursor.h"
#include "IDBDatabase.h"
#include "IDBEvents.h"
#include "IDBFactory.h"
#include "IDBIndex.h"
#include "IDBKeyRange.h"
#include "IDBMutableFile.h"
#include "IDBRequest.h"
#include "IDBTransaction.h"
#include "IndexedDatabase.h"
#include "IndexedDatabaseInlines.h"
#include "IndexedDatabaseManager.h"
#include "js/Class.h"
#include "js/Date.h"
#include "js/StructuredClone.h"
#include "KeyPath.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/EndianUtils.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/JSObjectHolder.h"
#include "mozilla/Move.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMStringList.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FileBlobImpl.h"
#include "mozilla/dom/IDBMutableFileBinding.h"
#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/IDBObjectStoreBinding.h"
#include "mozilla/dom/MemoryBlobImpl.h"
#include "mozilla/dom/StreamBlobImpl.h"
#include "mozilla/dom/StructuredCloneHolder.h"
#include "mozilla/dom/StructuredCloneTags.h"
#include "mozilla/dom/indexedDB/PBackgroundIDBSharedTypes.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "mozilla/dom/WorkerScope.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "mozilla/SystemGroup.h"
#include "nsCOMPtr.h"
#include "nsQueryObject.h"
#include "nsStreamUtils.h"
#include "nsStringStream.h"
#include "ProfilerHelpers.h"
#include "ReportInternalError.h"
// Include this last to avoid path problems on Windows.
#include "ActorsChild.h"
namespace mozilla {
namespace dom {
using namespace mozilla::dom::indexedDB;
using namespace mozilla::dom::quota;
using namespace mozilla::ipc;
struct IDBObjectStore::StructuredCloneWriteInfo {
JSAutoStructuredCloneBuffer mCloneBuffer;
nsTArray<StructuredCloneFile> mFiles;
IDBDatabase* mDatabase;
uint64_t mOffsetToKeyProp;
explicit StructuredCloneWriteInfo(IDBDatabase* aDatabase)
: mCloneBuffer(JS::StructuredCloneScope::DifferentProcessForIndexedDB,
nullptr, nullptr),
mDatabase(aDatabase),
mOffsetToKeyProp(0) {
MOZ_ASSERT(aDatabase);
MOZ_COUNT_CTOR(StructuredCloneWriteInfo);
}
StructuredCloneWriteInfo(StructuredCloneWriteInfo&& aCloneWriteInfo)
: mCloneBuffer(std::move(aCloneWriteInfo.mCloneBuffer)),
mDatabase(aCloneWriteInfo.mDatabase),
mOffsetToKeyProp(aCloneWriteInfo.mOffsetToKeyProp) {
MOZ_ASSERT(mDatabase);
MOZ_COUNT_CTOR(StructuredCloneWriteInfo);
mFiles.SwapElements(aCloneWriteInfo.mFiles);
aCloneWriteInfo.mOffsetToKeyProp = 0;
}
~StructuredCloneWriteInfo() { MOZ_COUNT_DTOR(StructuredCloneWriteInfo); }
};
// Used by ValueWrapper::Clone to hold strong references to any blob-like
// objects through the clone process. This is necessary because:
// - The structured clone process may trigger content code via getters/other
// which can potentially cause existing strong references to be dropped,
// necessitating the clone to hold its own strong references.
// - The structured clone can abort partway through, so it's necessary to track
// what strong references have been acquired so that they can be freed even
// if a de-serialization does not occur.
struct IDBObjectStore::StructuredCloneInfo {
nsTArray<StructuredCloneFile> mFiles;
};
namespace {
struct MOZ_STACK_CLASS MutableFileData final {
nsString type;
nsString name;
MutableFileData() { MOZ_COUNT_CTOR(MutableFileData); }
~MutableFileData() { MOZ_COUNT_DTOR(MutableFileData); }
};
struct MOZ_STACK_CLASS BlobOrFileData final {
uint32_t tag;
uint64_t size;
nsString type;
nsString name;
int64_t lastModifiedDate;
BlobOrFileData() : tag(0), size(0), lastModifiedDate(INT64_MAX) {
MOZ_COUNT_CTOR(BlobOrFileData);
}
~BlobOrFileData() { MOZ_COUNT_DTOR(BlobOrFileData); }
};
struct MOZ_STACK_CLASS WasmModuleData final {
uint32_t bytecodeIndex;
uint32_t compiledIndex;
uint32_t flags;
explicit WasmModuleData(uint32_t aFlags)
: bytecodeIndex(0), compiledIndex(0), flags(aFlags) {
MOZ_COUNT_CTOR(WasmModuleData);
}
~WasmModuleData() { MOZ_COUNT_DTOR(WasmModuleData); }
};
struct MOZ_STACK_CLASS GetAddInfoClosure final {
IDBObjectStore::StructuredCloneWriteInfo& mCloneWriteInfo;
JS::Handle<JS::Value> mValue;
GetAddInfoClosure(IDBObjectStore::StructuredCloneWriteInfo& aCloneWriteInfo,
JS::Handle<JS::Value> aValue)
: mCloneWriteInfo(aCloneWriteInfo), mValue(aValue) {
MOZ_COUNT_CTOR(GetAddInfoClosure);
}
~GetAddInfoClosure() { MOZ_COUNT_DTOR(GetAddInfoClosure); }
};
already_AddRefed<IDBRequest> GenerateRequest(JSContext* aCx,
IDBObjectStore* aObjectStore) {
MOZ_ASSERT(aObjectStore);
aObjectStore->AssertIsOnOwningThread();
IDBTransaction* transaction = aObjectStore->Transaction();
RefPtr<IDBRequest> request = IDBRequest::Create(
aCx, aObjectStore, transaction->Database(), transaction);
MOZ_ASSERT(request);
return request.forget();
}
bool StructuredCloneWriteCallback(JSContext* aCx,
JSStructuredCloneWriter* aWriter,
JS::Handle<JSObject*> aObj, void* aClosure) {
MOZ_ASSERT(aCx);
MOZ_ASSERT(aWriter);
MOZ_ASSERT(aClosure);
auto* cloneWriteInfo =
static_cast<IDBObjectStore::StructuredCloneWriteInfo*>(aClosure);
if (JS_GetClass(aObj) == IDBObjectStore::DummyPropClass()) {
MOZ_ASSERT(!cloneWriteInfo->mOffsetToKeyProp);
cloneWriteInfo->mOffsetToKeyProp = js::GetSCOffset(aWriter);
uint64_t value = 0;
// Omit endian swap
return JS_WriteBytes(aWriter, &value, sizeof(value));
}
// UNWRAP_OBJECT calls might mutate this.
JS::Rooted<JSObject*> obj(aCx, aObj);
IDBMutableFile* mutableFile;
if (NS_SUCCEEDED(UNWRAP_OBJECT(IDBMutableFile, &obj, mutableFile))) {
if (cloneWriteInfo->mDatabase->IsFileHandleDisabled()) {
return false;
}
IDBDatabase* database = mutableFile->Database();
MOZ_ASSERT(database);
// Throw when trying to store IDBMutableFile objects that live in a
// different database.
if (database != cloneWriteInfo->mDatabase) {
MOZ_ASSERT(!SameCOMIdentity(database, cloneWriteInfo->mDatabase));
if (database->Name() != cloneWriteInfo->mDatabase->Name()) {
return false;
}
nsCString fileOrigin, databaseOrigin;
PersistenceType filePersistenceType, databasePersistenceType;
if (NS_WARN_IF(NS_FAILED(
database->GetQuotaInfo(fileOrigin, &filePersistenceType)))) {
return false;
}
if (NS_WARN_IF(NS_FAILED(cloneWriteInfo->mDatabase->GetQuotaInfo(
databaseOrigin, &databasePersistenceType)))) {
return false;
}
if (filePersistenceType != databasePersistenceType ||
fileOrigin != databaseOrigin) {
return false;
}
}
if (cloneWriteInfo->mFiles.Length() > size_t(UINT32_MAX)) {
MOZ_ASSERT(false, "Fix the structured clone data to use a bigger type!");
return false;
}
const uint32_t index = cloneWriteInfo->mFiles.Length();
NS_ConvertUTF16toUTF8 convType(mutableFile->Type());
uint32_t convTypeLength =
NativeEndian::swapToLittleEndian(convType.Length());
NS_ConvertUTF16toUTF8 convName(mutableFile->Name());
uint32_t convNameLength =
NativeEndian::swapToLittleEndian(convName.Length());
if (!JS_WriteUint32Pair(aWriter, SCTAG_DOM_MUTABLEFILE, uint32_t(index)) ||
!JS_WriteBytes(aWriter, &convTypeLength, sizeof(uint32_t)) ||
!JS_WriteBytes(aWriter, convType.get(), convType.Length()) ||
!JS_WriteBytes(aWriter, &convNameLength, sizeof(uint32_t)) ||
!JS_WriteBytes(aWriter, convName.get(), convName.Length())) {
return false;
}
StructuredCloneFile* newFile = cloneWriteInfo->mFiles.AppendElement();
newFile->mMutableFile = mutableFile;
newFile->mType = StructuredCloneFile::eMutableFile;
return true;
}
{
Blob* blob = nullptr;
if (NS_SUCCEEDED(UNWRAP_OBJECT(Blob, &obj, blob))) {
ErrorResult rv;
uint64_t size = blob->GetSize(rv);
MOZ_ASSERT(!rv.Failed());
size = NativeEndian::swapToLittleEndian(size);
nsString type;
blob->GetType(type);
NS_ConvertUTF16toUTF8 convType(type);
uint32_t convTypeLength =
NativeEndian::swapToLittleEndian(convType.Length());
if (cloneWriteInfo->mFiles.Length() > size_t(UINT32_MAX)) {
MOZ_ASSERT(false,
"Fix the structured clone data to use a bigger type!");
return false;
}
const uint32_t index = cloneWriteInfo->mFiles.Length();
if (!JS_WriteUint32Pair(aWriter,
blob->IsFile() ? SCTAG_DOM_FILE : SCTAG_DOM_BLOB,
index) ||
!JS_WriteBytes(aWriter, &size, sizeof(size)) ||
!JS_WriteBytes(aWriter, &convTypeLength, sizeof(convTypeLength)) ||
!JS_WriteBytes(aWriter, convType.get(), convType.Length())) {
return false;
}
RefPtr<File> file = blob->ToFile();
if (file) {
ErrorResult rv;
int64_t lastModifiedDate = file->GetLastModified(rv);
MOZ_ALWAYS_TRUE(!rv.Failed());
lastModifiedDate = NativeEndian::swapToLittleEndian(lastModifiedDate);
nsString name;
file->GetName(name);
NS_ConvertUTF16toUTF8 convName(name);
uint32_t convNameLength =
NativeEndian::swapToLittleEndian(convName.Length());
if (!JS_WriteBytes(aWriter, &lastModifiedDate,
sizeof(lastModifiedDate)) ||
!JS_WriteBytes(aWriter, &convNameLength, sizeof(convNameLength)) ||
!JS_WriteBytes(aWriter, convName.get(), convName.Length())) {
return false;
}
}
StructuredCloneFile* newFile = cloneWriteInfo->mFiles.AppendElement();
newFile->mBlob = blob;
newFile->mType = StructuredCloneFile::eBlob;
return true;
}
}
return StructuredCloneHolder::WriteFullySerializableObjects(aCx, aWriter,
aObj);
}
bool CopyingStructuredCloneWriteCallback(JSContext* aCx,
JSStructuredCloneWriter* aWriter,
JS::Handle<JSObject*> aObj,
void* aClosure) {
MOZ_ASSERT(aCx);
MOZ_ASSERT(aWriter);
MOZ_ASSERT(aClosure);
auto* cloneInfo = static_cast<IDBObjectStore::StructuredCloneInfo*>(aClosure);
// UNWRAP_OBJECT calls might mutate this.
JS::Rooted<JSObject*> obj(aCx, aObj);
{
Blob* blob = nullptr;
if (NS_SUCCEEDED(UNWRAP_OBJECT(Blob, &obj, blob))) {
if (cloneInfo->mFiles.Length() > size_t(UINT32_MAX)) {
MOZ_ASSERT(false,
"Fix the structured clone data to use a bigger type!");
return false;
}
const uint32_t index = cloneInfo->mFiles.Length();
if (!JS_WriteUint32Pair(aWriter,
blob->IsFile() ? SCTAG_DOM_FILE : SCTAG_DOM_BLOB,
index)) {
return false;
}
StructuredCloneFile* newFile = cloneInfo->mFiles.AppendElement();
newFile->mBlob = blob;
newFile->mType = StructuredCloneFile::eBlob;
return true;
}
}
{
IDBMutableFile* mutableFile;
if (NS_SUCCEEDED(UNWRAP_OBJECT(IDBMutableFile, &obj, mutableFile))) {
if (cloneInfo->mFiles.Length() > size_t(UINT32_MAX)) {
MOZ_ASSERT(false,
"Fix the structured clone data to use a bigger type!");
return false;
}
const uint32_t index = cloneInfo->mFiles.Length();
if (!JS_WriteUint32Pair(aWriter, SCTAG_DOM_MUTABLEFILE, index)) {
return false;
}
StructuredCloneFile* newFile = cloneInfo->mFiles.AppendElement();
newFile->mMutableFile = mutableFile;
newFile->mType = StructuredCloneFile::eMutableFile;
return true;
}
}
return StructuredCloneHolder::WriteFullySerializableObjects(aCx, aWriter,
aObj);
}
nsresult GetAddInfoCallback(JSContext* aCx, void* aClosure) {
static const JSStructuredCloneCallbacks kStructuredCloneCallbacks = {
nullptr /* read */,
StructuredCloneWriteCallback /* write */,
nullptr /* reportError */,
nullptr /* readTransfer */,
nullptr /* writeTransfer */,
nullptr /* freeTransfer */,
nullptr /* canTransfer */
};
MOZ_ASSERT(aCx);
auto* data = static_cast<GetAddInfoClosure*>(aClosure);
MOZ_ASSERT(data);
data->mCloneWriteInfo.mOffsetToKeyProp = 0;
if (!data->mCloneWriteInfo.mCloneBuffer.write(aCx, data->mValue,
&kStructuredCloneCallbacks,
&data->mCloneWriteInfo)) {
return NS_ERROR_DOM_DATA_CLONE_ERR;
}
return NS_OK;
}
bool ResolveMysteryMutableFile(IDBMutableFile* aMutableFile,
const nsString& aName, const nsString& aType) {
MOZ_ASSERT(aMutableFile);
aMutableFile->SetLazyData(aName, aType);
return true;
}
bool StructuredCloneReadString(JSStructuredCloneReader* aReader,
nsCString& aString) {
uint32_t length;
if (!JS_ReadBytes(aReader, &length, sizeof(uint32_t))) {
NS_WARNING("Failed to read length!");
return false;
}
length = NativeEndian::swapFromLittleEndian(length);
if (!aString.SetLength(length, fallible)) {
NS_WARNING("Out of memory?");
return false;
}
char* buffer = aString.BeginWriting();
if (!JS_ReadBytes(aReader, buffer, length)) {
NS_WARNING("Failed to read type!");
return false;
}
return true;
}
bool ReadFileHandle(JSStructuredCloneReader* aReader,
MutableFileData* aRetval) {
static_assert(SCTAG_DOM_MUTABLEFILE == 0xFFFF8004, "Update me!");
MOZ_ASSERT(aReader && aRetval);
nsCString type;
if (!StructuredCloneReadString(aReader, type)) {
return false;
}
CopyUTF8toUTF16(type, aRetval->type);
nsCString name;
if (!StructuredCloneReadString(aReader, name)) {
return false;
}
CopyUTF8toUTF16(name, aRetval->name);
return true;
}
bool ReadBlobOrFile(JSStructuredCloneReader* aReader, uint32_t aTag,
BlobOrFileData* aRetval) {
static_assert(SCTAG_DOM_BLOB == 0xffff8001 &&
SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE == 0xffff8002 &&
SCTAG_DOM_FILE == 0xffff8005,
"Update me!");
MOZ_ASSERT(aReader);
MOZ_ASSERT(aTag == SCTAG_DOM_FILE ||
aTag == SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE ||
aTag == SCTAG_DOM_BLOB);
MOZ_ASSERT(aRetval);
aRetval->tag = aTag;
uint64_t size;
if (NS_WARN_IF(!JS_ReadBytes(aReader, &size, sizeof(uint64_t)))) {
return false;
}
aRetval->size = NativeEndian::swapFromLittleEndian(size);
nsCString type;
if (NS_WARN_IF(!StructuredCloneReadString(aReader, type))) {
return false;
}
CopyUTF8toUTF16(type, aRetval->type);
// Blobs are done.
if (aTag == SCTAG_DOM_BLOB) {
return true;
}
MOZ_ASSERT(aTag == SCTAG_DOM_FILE ||
aTag == SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE);
int64_t lastModifiedDate;
if (aTag == SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE) {
lastModifiedDate = INT64_MAX;
} else {
if (NS_WARN_IF(!JS_ReadBytes(aReader, &lastModifiedDate,
sizeof(lastModifiedDate)))) {
return false;
}
lastModifiedDate = NativeEndian::swapFromLittleEndian(lastModifiedDate);
}
aRetval->lastModifiedDate = lastModifiedDate;
nsCString name;
if (NS_WARN_IF(!StructuredCloneReadString(aReader, name))) {
return false;
}
CopyUTF8toUTF16(name, aRetval->name);
return true;
}
bool ReadWasmModule(JSStructuredCloneReader* aReader, WasmModuleData* aRetval) {
static_assert(SCTAG_DOM_WASM == 0xFFFF8006, "Update me!");
MOZ_ASSERT(aReader && aRetval);
uint32_t bytecodeIndex;
uint32_t compiledIndex;
if (NS_WARN_IF(!JS_ReadUint32Pair(aReader, &bytecodeIndex, &compiledIndex))) {
return false;
}
aRetval->bytecodeIndex = bytecodeIndex;
aRetval->compiledIndex = compiledIndex;
return true;
}
class ValueDeserializationHelper {
public:
static bool CreateAndWrapMutableFile(JSContext* aCx,
StructuredCloneFile& aFile,
const MutableFileData& aData,
JS::MutableHandle<JSObject*> aResult) {
MOZ_ASSERT(aCx);
// If we have eBlob, we are in an IDB SQLite schema upgrade where we don't
// care about a real 'MutableFile', but we just care of having a propert
// |mType| flag.
if (aFile.mType == StructuredCloneFile::eBlob) {
aFile.mType = StructuredCloneFile::eMutableFile;
// Just make a dummy object.
JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
if (NS_WARN_IF(!obj)) {
return false;
}
aResult.set(obj);
return true;
}
MOZ_ASSERT(aFile.mType == StructuredCloneFile::eMutableFile);
if (!aFile.mMutableFile || !NS_IsMainThread()) {
return false;
}
if (NS_WARN_IF(!ResolveMysteryMutableFile(aFile.mMutableFile, aData.name,
aData.type))) {
return false;
}
JS::Rooted<JS::Value> wrappedMutableFile(aCx);
if (!ToJSValue(aCx, aFile.mMutableFile, &wrappedMutableFile)) {
return false;
}
aResult.set(&wrappedMutableFile.toObject());
return true;
}
static bool CreateAndWrapBlobOrFile(JSContext* aCx, IDBDatabase* aDatabase,
StructuredCloneFile& aFile,
const BlobOrFileData& aData,
JS::MutableHandle<JSObject*> aResult) {
MOZ_ASSERT(aCx);
MOZ_ASSERT(aData.tag == SCTAG_DOM_FILE ||
aData.tag == SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE ||
aData.tag == SCTAG_DOM_BLOB);
MOZ_ASSERT(aFile.mType == StructuredCloneFile::eBlob);
RefPtr<Blob> blob = aFile.mBlob;
/* If we are creating an index, we do not have an mBlob but do have an
* mInfo. Unlike other index or upgrade cases, we do need a real-looking
* Blob/File instance because the index's key path can reference their
* properties. Rather than create a fake-looking object, create a real
* Blob. */
if (!blob) {
MOZ_ASSERT(aFile.mFileInfo);
nsCOMPtr<nsIFile> file = FileInfo::GetFileForFileInfo(aFile.mFileInfo);
if (!file) {
return false;
}
RefPtr<FileBlobImpl> impl = new FileBlobImpl(file);
impl->SetFileId(aFile.mFileInfo->Id());
blob = File::Create(nullptr, impl);
}
// It can happen that this IDB is chrome code, so there is no parent, but
// still we want to set a correct parent for the new File object.
nsCOMPtr<nsISupports> parent;
if (NS_IsMainThread()) {
if (aDatabase && aDatabase->GetParentObject()) {
parent = aDatabase->GetParentObject();
} else {
parent = xpc::CurrentNativeGlobal(aCx);
}
} else {
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
MOZ_ASSERT(workerPrivate);
WorkerGlobalScope* globalScope = workerPrivate->GlobalScope();
MOZ_ASSERT(globalScope);
parent = do_QueryObject(globalScope);
}
MOZ_ASSERT(parent);
if (aData.tag == SCTAG_DOM_BLOB) {
blob->Impl()->SetLazyData(VoidString(), aData.type, aData.size,
INT64_MAX);
MOZ_ASSERT(!blob->IsFile());
// ActorsParent sends here a kind of half blob and half file wrapped into
// a DOM File object. DOM File and DOM Blob are a WebIDL wrapper around a
// BlobImpl object. SetLazyData() has just changed the BlobImpl to be a
// Blob (see the previous assert), but 'blob' still has the WebIDL DOM
// File wrapping.
// Before exposing it to content, we must recreate a DOM Blob object.
RefPtr<Blob> exposedBlob =
Blob::Create(blob->GetParentObject(), blob->Impl());
MOZ_ASSERT(exposedBlob);
JS::Rooted<JS::Value> wrappedBlob(aCx);
if (!ToJSValue(aCx, exposedBlob, &wrappedBlob)) {
return false;
}
aResult.set(&wrappedBlob.toObject());
return true;
}
blob->Impl()->SetLazyData(aData.name, aData.type, aData.size,
aData.lastModifiedDate * PR_USEC_PER_MSEC);
MOZ_ASSERT(blob->IsFile());
RefPtr<File> file = blob->ToFile();
MOZ_ASSERT(file);
JS::Rooted<JS::Value> wrappedFile(aCx);
if (!ToJSValue(aCx, file, &wrappedFile)) {
return false;
}
aResult.set(&wrappedFile.toObject());
return true;
}
static bool CreateAndWrapWasmModule(JSContext* aCx,
StructuredCloneFile& aFile,
const WasmModuleData& aData,
JS::MutableHandle<JSObject*> aResult) {
MOZ_ASSERT(aCx);
MOZ_ASSERT(aFile.mType == StructuredCloneFile::eWasmBytecode);
MOZ_ASSERT(!aFile.mBlob);
// If we don't have a WasmModule, we are probably using it for an index
// creation, but Wasm module can't be used in index creation, so just make a
// dummy object.
if (!aFile.mWasmModule) {
JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
if (NS_WARN_IF(!obj)) {
return false;
}
aResult.set(obj);
return true;
}
JS::Rooted<JSObject*> moduleObj(aCx, aFile.mWasmModule->createObject(aCx));
if (NS_WARN_IF(!moduleObj)) {
return false;
}
aResult.set(moduleObj);
return true;
}
};
JSObject* CommonStructuredCloneReadCallback(JSContext* aCx,
JSStructuredCloneReader* aReader,
uint32_t aTag, uint32_t aData,
void* aClosure) {
// We need to statically assert that our tag values are what we expect
// so that if people accidentally change them they notice.
static_assert(SCTAG_DOM_BLOB == 0xffff8001 &&
SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE == 0xffff8002 &&
SCTAG_DOM_MUTABLEFILE == 0xffff8004 &&
SCTAG_DOM_FILE == 0xffff8005 &&
SCTAG_DOM_WASM == 0xffff8006,
"You changed our structured clone tag values and just ate "
"everyone's IndexedDB data. I hope you are happy.");
if (aTag == SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE ||
aTag == SCTAG_DOM_BLOB || aTag == SCTAG_DOM_FILE ||
aTag == SCTAG_DOM_MUTABLEFILE || aTag == SCTAG_DOM_WASM) {
auto* cloneReadInfo = static_cast<StructuredCloneReadInfo*>(aClosure);
JS::Rooted<JSObject*> result(aCx);
if (aTag == SCTAG_DOM_WASM) {
WasmModuleData data(aData);
if (NS_WARN_IF(!ReadWasmModule(aReader, &data))) {
return nullptr;
}
MOZ_ASSERT(data.compiledIndex == data.bytecodeIndex + 1);
MOZ_ASSERT(!data.flags);
if (data.bytecodeIndex >= cloneReadInfo->mFiles.Length() ||
data.compiledIndex >= cloneReadInfo->mFiles.Length()) {
MOZ_ASSERT(false, "Bad index value!");
return nullptr;
}
StructuredCloneFile& file = cloneReadInfo->mFiles[data.bytecodeIndex];
if (NS_WARN_IF(!ValueDeserializationHelper::CreateAndWrapWasmModule(
aCx, file, data, &result))) {
return nullptr;
}
return result;
}
if (aData >= cloneReadInfo->mFiles.Length()) {
MOZ_ASSERT(false, "Bad index value!");
return nullptr;
}
StructuredCloneFile& file = cloneReadInfo->mFiles[aData];
if (aTag == SCTAG_DOM_MUTABLEFILE) {
MutableFileData data;
if (NS_WARN_IF(!ReadFileHandle(aReader, &data))) {
return nullptr;
}
if (NS_WARN_IF(!ValueDeserializationHelper::CreateAndWrapMutableFile(
aCx, file, data, &result))) {
return nullptr;
}
return result;
}
BlobOrFileData data;
if (NS_WARN_IF(!ReadBlobOrFile(aReader, aTag, &data))) {
return nullptr;
}
if (NS_WARN_IF(!ValueDeserializationHelper::CreateAndWrapBlobOrFile(
aCx, cloneReadInfo->mDatabase, file, data, &result))) {
return nullptr;
}
return result;
}
return StructuredCloneHolder::ReadFullySerializableObjects(aCx, aReader,
aTag);
}
JSObject* CopyingStructuredCloneReadCallback(JSContext* aCx,
JSStructuredCloneReader* aReader,
uint32_t aTag, uint32_t aData,
void* aClosure) {
MOZ_ASSERT(aTag != SCTAG_DOM_FILE_WITHOUT_LASTMODIFIEDDATE);
if (aTag == SCTAG_DOM_BLOB || aTag == SCTAG_DOM_FILE ||
aTag == SCTAG_DOM_MUTABLEFILE || aTag == SCTAG_DOM_WASM) {
auto* cloneInfo =
static_cast<IDBObjectStore::StructuredCloneInfo*>(aClosure);
JS::Rooted<JSObject*> result(aCx);
if (aData >= cloneInfo->mFiles.Length()) {
MOZ_ASSERT(false, "Bad index value!");
return nullptr;
}
StructuredCloneFile& file = cloneInfo->mFiles[aData];
if (aTag == SCTAG_DOM_BLOB) {
MOZ_ASSERT(file.mType == StructuredCloneFile::eBlob);
MOZ_ASSERT(!file.mBlob->IsFile());
JS::Rooted<JS::Value> wrappedBlob(aCx);
if (NS_WARN_IF(!ToJSValue(aCx, file.mBlob, &wrappedBlob))) {
return nullptr;
}
result.set(&wrappedBlob.toObject());
return result;
}
if (aTag == SCTAG_DOM_FILE) {
MOZ_ASSERT(file.mType == StructuredCloneFile::eBlob);
{
// Create a scope so ~RefPtr fires before returning an unwrapped
// JS::Value.
RefPtr<Blob> blob = file.mBlob;
MOZ_ASSERT(blob->IsFile());
RefPtr<File> file = blob->ToFile();
MOZ_ASSERT(file);
JS::Rooted<JS::Value> wrappedFile(aCx);
if (NS_WARN_IF(!ToJSValue(aCx, file, &wrappedFile))) {
return nullptr;
}
result.set(&wrappedFile.toObject());
}
return result;
}
if (aTag == SCTAG_DOM_MUTABLEFILE) {
MOZ_ASSERT(file.mType == StructuredCloneFile::eMutableFile);
JS::Rooted<JS::Value> wrappedMutableFile(aCx);
if (NS_WARN_IF(!ToJSValue(aCx, file.mMutableFile, &wrappedMutableFile))) {
return nullptr;
}
result.set(&wrappedMutableFile.toObject());
return result;
}
MOZ_ASSERT(file.mType == StructuredCloneFile::eWasmBytecode);
JS::Rooted<JSObject*> wrappedModule(aCx,
file.mWasmModule->createObject(aCx));
if (NS_WARN_IF(!wrappedModule)) {
return nullptr;
}
result.set(wrappedModule);
return result;
}
return StructuredCloneHolder::ReadFullySerializableObjects(aCx, aReader,
aTag);
}
} // namespace
const JSClass IDBObjectStore::sDummyPropJSClass = {
"IDBObjectStore Dummy", 0 /* flags */
};
IDBObjectStore::IDBObjectStore(IDBTransaction* aTransaction,
const ObjectStoreSpec* aSpec)
: mTransaction(aTransaction),
mCachedKeyPath(JS::UndefinedValue()),
mSpec(aSpec),
mId(aSpec->metadata().id()),
mRooted(false) {
MOZ_ASSERT(aTransaction);
aTransaction->AssertIsOnOwningThread();
MOZ_ASSERT(aSpec);
}
IDBObjectStore::~IDBObjectStore() {
AssertIsOnOwningThread();
if (mRooted) {
mCachedKeyPath.setUndefined();
mozilla::DropJSObjects(this);
}
}
// static
already_AddRefed<IDBObjectStore> IDBObjectStore::Create(
IDBTransaction* aTransaction, const ObjectStoreSpec& aSpec) {
MOZ_ASSERT(aTransaction);
aTransaction->AssertIsOnOwningThread();
RefPtr<IDBObjectStore> objectStore = new IDBObjectStore(aTransaction, &aSpec);
return objectStore.forget();
}
// static
nsresult IDBObjectStore::AppendIndexUpdateInfo(
int64_t aIndexID, const KeyPath& aKeyPath, bool aUnique, bool aMultiEntry,
const nsCString& aLocale, JSContext* aCx, JS::Handle<JS::Value> aVal,
nsTArray<IndexUpdateInfo>& aUpdateInfoArray) {
nsresult rv;
const bool localeAware = !aLocale.IsEmpty();
if (!aMultiEntry) {
Key key;
rv = aKeyPath.ExtractKey(aCx, aVal, key);
// If an index's keyPath doesn't match an object, we ignore that object.
if (rv == NS_ERROR_DOM_INDEXEDDB_DATA_ERR || key.IsUnset()) {
return NS_OK;
}
if (NS_FAILED(rv)) {
return rv;
}
IndexUpdateInfo* updateInfo = aUpdateInfoArray.AppendElement();
updateInfo->indexId() = aIndexID;
updateInfo->value() = key;
if (localeAware) {
rv = key.ToLocaleBasedKey(updateInfo->localizedValue(), aLocale);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
return NS_OK;
}
JS::Rooted<JS::Value> val(aCx);
if (NS_FAILED(aKeyPath.ExtractKeyAsJSVal(aCx, aVal, val.address()))) {
return NS_OK;
}
bool isArray;
if (!JS_IsArrayObject(aCx, val, &isArray)) {
IDB_REPORT_INTERNAL_ERR();
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
if (isArray) {
JS::Rooted<JSObject*> array(aCx, &val.toObject());
uint32_t arrayLength;
if (NS_WARN_IF(!JS_GetArrayLength(aCx, array, &arrayLength))) {
IDB_REPORT_INTERNAL_ERR();
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
for (uint32_t arrayIndex = 0; arrayIndex < arrayLength; arrayIndex++) {
JS::Rooted<JS::Value> arrayItem(aCx);
if (NS_WARN_IF(!JS_GetElement(aCx, array, arrayIndex, &arrayItem))) {
IDB_REPORT_INTERNAL_ERR();
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
Key value;
if (NS_FAILED(value.SetFromJSVal(aCx, arrayItem)) || value.IsUnset()) {
// Not a value we can do anything with, ignore it.
continue;
}
IndexUpdateInfo* updateInfo = aUpdateInfoArray.AppendElement();
updateInfo->indexId() = aIndexID;
updateInfo->value() = value;
if (localeAware) {
rv = value.ToLocaleBasedKey(updateInfo->localizedValue(), aLocale);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
}