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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "IDBMutableFile.h"
#include "ActorsChild.h"
#include "FileInfo.h"
#include "FileSnapshot.h"
#include "IDBDatabase.h"
#include "IDBFactory.h"
#include "IDBFileHandle.h"
#include "IDBFileRequest.h"
#include "IndexedDatabaseManager.h"
#include "MainThreadUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/IDBMutableFileBinding.h"
#include "mozilla/dom/filehandle/ActorsChild.h"
#include "mozilla/dom/indexedDB/PBackgroundIDBSharedTypes.h"
#include "mozilla/dom/quota/FileStreams.h"
#include "mozilla/dom/quota/QuotaManager.h"
#include "mozilla/ipc/BackgroundUtils.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "nsContentUtils.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsIInputStream.h"
#include "nsIPrincipal.h"
#include "ReportInternalError.h"
namespace mozilla {
namespace dom {
using namespace mozilla::dom::indexedDB;
using namespace mozilla::dom::quota;
IDBMutableFile::IDBMutableFile(IDBDatabase* aDatabase,
BackgroundMutableFileChild* aActor,
const nsAString& aName,
const nsAString& aType)
: DOMEventTargetHelper(aDatabase)
, MutableFileBase(DEBUGONLY(aDatabase->OwningThread(),)
aActor)
, mDatabase(aDatabase)
, mName(aName)
, mType(aType)
, mInvalidated(false)
{
AssertIsOnOwningThread();
MOZ_ASSERT(aDatabase);
aDatabase->AssertIsOnOwningThread();
mDatabase->NoteLiveMutableFile(this);
}
IDBMutableFile::~IDBMutableFile()
{
AssertIsOnOwningThread();
mDatabase->NoteFinishedMutableFile(this);
}
int64_t
IDBMutableFile::GetFileId() const
{
AssertIsOnOwningThread();
int64_t fileId;
if (!mBackgroundActor ||
NS_WARN_IF(!mBackgroundActor->SendGetFileId(&fileId))) {
return -1;
}
return fileId;
}
void
IDBMutableFile::Invalidate()
{
AssertIsOnOwningThread();
MOZ_ASSERT(!mInvalidated);
mInvalidated = true;
AbortFileHandles();
}
void
IDBMutableFile::RegisterFileHandle(IDBFileHandle* aFileHandle)
{
AssertIsOnOwningThread();
MOZ_ASSERT(aFileHandle);
aFileHandle->AssertIsOnOwningThread();
MOZ_ASSERT(!mFileHandles.Contains(aFileHandle));
mFileHandles.PutEntry(aFileHandle);
}
void
IDBMutableFile::UnregisterFileHandle(IDBFileHandle* aFileHandle)
{
AssertIsOnOwningThread();
MOZ_ASSERT(aFileHandle);
aFileHandle->AssertIsOnOwningThread();
MOZ_ASSERT(mFileHandles.Contains(aFileHandle));
mFileHandles.RemoveEntry(aFileHandle);
}
void
IDBMutableFile::AbortFileHandles()
{
AssertIsOnOwningThread();
class MOZ_STACK_CLASS Helper final
{
public:
static void
AbortFileHandles(nsTHashtable<nsPtrHashKey<IDBFileHandle>>& aTable)
{
if (!aTable.Count()) {
return;
}
nsTArray<RefPtr<IDBFileHandle>> fileHandlesToAbort;
fileHandlesToAbort.SetCapacity(aTable.Count());
for (auto iter = aTable.Iter(); !iter.Done(); iter.Next()) {
IDBFileHandle* fileHandle = iter.Get()->GetKey();
MOZ_ASSERT(fileHandle);
fileHandle->AssertIsOnOwningThread();
if (!fileHandle->IsDone()) {
fileHandlesToAbort.AppendElement(iter.Get()->GetKey());
}
}
MOZ_ASSERT(fileHandlesToAbort.Length() <= aTable.Count());
if (fileHandlesToAbort.IsEmpty()) {
return;
}
for (RefPtr<IDBFileHandle>& fileHandle : fileHandlesToAbort) {
MOZ_ASSERT(fileHandle);
fileHandle->Abort();
}
}
};
Helper::AbortFileHandles(mFileHandles);
}
IDBDatabase*
IDBMutableFile::Database() const
{
AssertIsOnOwningThread();
return mDatabase;
}
already_AddRefed<IDBFileHandle>
IDBMutableFile::Open(FileMode aMode, ErrorResult& aError)
{
AssertIsOnOwningThread();
if (QuotaManager::IsShuttingDown() ||
mDatabase->IsClosed() ||
!GetOwner()) {
aError.Throw(NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR);
return nullptr;
}
RefPtr<IDBFileHandle> fileHandle =
IDBFileHandle::Create(this, aMode);
if (NS_WARN_IF(!fileHandle)) {
aError.Throw(NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR);
return nullptr;
}
BackgroundFileHandleChild* actor =
new BackgroundFileHandleChild(DEBUGONLY(mBackgroundActor->OwningThread(),)
fileHandle);
MOZ_ALWAYS_TRUE(
mBackgroundActor->SendPBackgroundFileHandleConstructor(actor, aMode));
fileHandle->SetBackgroundActor(actor);
return fileHandle.forget();
}
already_AddRefed<DOMRequest>
IDBMutableFile::GetFile(ErrorResult& aError)
{
RefPtr<IDBFileHandle> fileHandle = Open(FileMode::Readonly, aError);
if (NS_WARN_IF(aError.Failed())) {
return nullptr;
}
FileRequestGetFileParams params;
RefPtr<IDBFileRequest> request =
IDBFileRequest::Create(GetOwner(),
fileHandle,
/* aWrapAsDOMRequest */ true);
fileHandle->StartRequest(request, params);
return request.forget();
}
NS_IMPL_ADDREF_INHERITED(IDBMutableFile, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(IDBMutableFile, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBMutableFile)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBMutableFile)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBMutableFile,
DOMEventTargetHelper)
tmp->AssertIsOnOwningThread();
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDatabase)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBMutableFile,
DOMEventTargetHelper)
tmp->AssertIsOnOwningThread();
// Don't unlink mDatabase!
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
JSObject*
IDBMutableFile::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return IDBMutableFileBinding::Wrap(aCx, this, aGivenProto);
}
const nsString&
IDBMutableFile::Name() const
{
AssertIsOnOwningThread();
return mName;
}
const nsString&
IDBMutableFile::Type() const
{
AssertIsOnOwningThread();
return mType;
}
bool
IDBMutableFile::IsInvalidated()
{
AssertIsOnOwningThread();
return mInvalidated;
}
already_AddRefed<File>
IDBMutableFile::CreateFileFor(BlobImpl* aBlobImpl,
FileHandleBase* aFileHandle)
{
AssertIsOnOwningThread();
RefPtr<BlobImpl> blobImplSnapshot =
new BlobImplSnapshot(aBlobImpl, static_cast<IDBFileHandle*>(aFileHandle));
RefPtr<File> file = File::Create(GetOwner(), blobImplSnapshot);
return file.forget();
}
} // namespace dom
} // namespace mozilla
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