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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
#include "mozilla/dom/FileSystemManager.h"
#include "FileSystemBackgroundRequestHandler.h"
#include "fs/FileSystemRequestHandler.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/FileSystemManagerChild.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/StorageManager.h"
#include "mozilla/dom/fs/ManagedMozPromiseRequestHolder.h"
#include "mozilla/dom/quota/QuotaCommon.h"
#include "mozilla/dom/quota/ResultExtensions.h"
namespace mozilla::dom {
FileSystemManager::FileSystemManager(
nsIGlobalObject* aGlobal, RefPtr<StorageManager> aStorageManager,
RefPtr<FileSystemBackgroundRequestHandler> aBackgroundRequestHandler)
: mGlobal(aGlobal),
mStorageManager(std::move(aStorageManager)),
mBackgroundRequestHandler(std::move(aBackgroundRequestHandler)),
mRequestHandler(new fs::FileSystemRequestHandler()) {}
FileSystemManager::FileSystemManager(nsIGlobalObject* aGlobal,
RefPtr<StorageManager> aStorageManager)
: FileSystemManager(aGlobal, std::move(aStorageManager),
MakeRefPtr<FileSystemBackgroundRequestHandler>()) {}
FileSystemManager::~FileSystemManager() { MOZ_ASSERT(mShutdown); }
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileSystemManager)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(FileSystemManager);
NS_IMPL_CYCLE_COLLECTING_RELEASE(FileSystemManager);
NS_IMPL_CYCLE_COLLECTION(FileSystemManager, mGlobal, mStorageManager);
void FileSystemManager::Shutdown() {
mShutdown.Flip();
auto shutdownAndDisconnect = [self = RefPtr(this)]() {
self->mBackgroundRequestHandler->Shutdown();
for (RefPtr<PromiseRequestHolder<FileSystemManagerChild::ActorPromise>>
holder : self->mPromiseRequestHolders.ForwardRange()) {
holder->DisconnectIfExists();
}
};
if (NS_IsMainThread()) {
if (mBackgroundRequestHandler->FileSystemManagerChildStrongRef()) {
mBackgroundRequestHandler->FileSystemManagerChildStrongRef()
->CloseAllWritables(
[shutdownAndDisconnect = std::move(shutdownAndDisconnect)]() {
shutdownAndDisconnect();
});
} else {
shutdownAndDisconnect();
}
} else {
if (mBackgroundRequestHandler->FileSystemManagerChildStrongRef()) {
// FileSystemAccessHandles and FileSystemWritableFileStreams prevent
// shutdown until they are full closed, so at this point, they all should
// be closed.
MOZ_ASSERT(mBackgroundRequestHandler->FileSystemManagerChildStrongRef()
->AllSyncAccessHandlesClosed());
MOZ_ASSERT(mBackgroundRequestHandler->FileSystemManagerChildStrongRef()
->AllWritableFileStreamsClosed());
}
shutdownAndDisconnect();
}
}
const RefPtr<FileSystemManagerChild>& FileSystemManager::ActorStrongRef()
const {
return mBackgroundRequestHandler->FileSystemManagerChildStrongRef();
}
void FileSystemManager::RegisterPromiseRequestHolder(
PromiseRequestHolder<FileSystemManagerChild::ActorPromise>* aHolder) {
mPromiseRequestHolders.AppendElement(aHolder);
}
void FileSystemManager::UnregisterPromiseRequestHolder(
PromiseRequestHolder<FileSystemManagerChild::ActorPromise>* aHolder) {
mPromiseRequestHolders.RemoveElement(aHolder);
}
void FileSystemManager::BeginRequest(
MoveOnlyFunction<void(RefPtr<FileSystemManagerChild>)>&& aSuccess,
MoveOnlyFunction<void(nsresult)>&& aFailure) {
MOZ_ASSERT(!mShutdown);
MOZ_ASSERT(mGlobal);
// Check if we're allowed to use storage
if (mGlobal->GetStorageAccess() <= StorageAccess::ePrivateBrowsing) {
aFailure(NS_ERROR_DOM_SECURITY_ERR);
return;
}
if (mBackgroundRequestHandler->FileSystemManagerChildStrongRef()) {
aSuccess(mBackgroundRequestHandler->FileSystemManagerChildStrongRef());
return;
}
QM_TRY_INSPECT(const auto& principalInfo, mGlobal->GetStorageKey(), QM_VOID,
[&aFailure](nsresult rv) { aFailure(rv); });
auto holder =
MakeRefPtr<PromiseRequestHolder<FileSystemManagerChild::ActorPromise>>(
this);
mBackgroundRequestHandler->CreateFileSystemManagerChild(principalInfo)
->Then(
GetCurrentSerialEventTarget(), __func__,
[self = RefPtr<FileSystemManager>(this), holder,
success = std::move(aSuccess), failure = std::move(aFailure)](
const FileSystemManagerChild::ActorPromise::ResolveOrRejectValue&
aValue) mutable {
holder->Complete();
if (aValue.IsResolve()) {
success(aValue.ResolveValue());
} else {
failure(aValue.RejectValue());
}
})
->Track(*holder);
}
already_AddRefed<Promise> FileSystemManager::GetDirectory(ErrorResult& aError) {
MOZ_ASSERT(mGlobal);
RefPtr<Promise> promise = Promise::Create(mGlobal, aError);
if (NS_WARN_IF(aError.Failed())) {
return nullptr;
}
MOZ_ASSERT(promise);
mRequestHandler->GetRootHandle(this, promise, aError);
if (NS_WARN_IF(aError.Failed())) {
return nullptr;
}
return promise.forget();
}
} // namespace mozilla::dom