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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 "RemoteWorkerParent.h"
#include "RemoteWorkerController.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/PFetchEventOpProxyParent.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "mozilla/Unused.h"
#include "nsProxyRelease.h"
namespace mozilla {
using namespace ipc;
namespace dom {
namespace {
class UnregisterActorRunnable final : public Runnable {
public:
explicit UnregisterActorRunnable(already_AddRefed<ContentParent> aParent)
: Runnable("UnregisterActorRunnable"), mContentParent(aParent) {
AssertIsOnBackgroundThread();
}
NS_IMETHOD
Run() override {
MOZ_ASSERT(NS_IsMainThread());
mContentParent->UnregisterRemoveWorkerActor();
mContentParent = nullptr;
return NS_OK;
}
private:
RefPtr<ContentParent> mContentParent;
};
} // namespace
RemoteWorkerParent::RemoteWorkerParent() {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
}
RemoteWorkerParent::~RemoteWorkerParent() {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
}
void RemoteWorkerParent::Initialize(bool aAlreadyRegistered) {
RefPtr<ContentParent> parent = BackgroundParent::GetContentParent(Manager());
// Parent is null if the child actor runs on the parent process.
if (parent) {
if (!aAlreadyRegistered) {
parent->RegisterRemoteWorkerActor();
}
NS_ReleaseOnMainThread("RemoteWorkerParent::Initialize ContentParent",
parent.forget());
}
}
PFetchEventOpProxyParent* RemoteWorkerParent::AllocPFetchEventOpProxyParent(
const ServiceWorkerFetchEventOpArgs& aArgs) {
MOZ_CRASH("PFetchEventOpProxyParent actors must be manually constructed!");
return nullptr;
}
bool RemoteWorkerParent::DeallocPFetchEventOpProxyParent(
PFetchEventOpProxyParent* aActor) {
MOZ_ASSERT(XRE_IsParentProcess());
AssertIsOnBackgroundThread();
MOZ_ASSERT(aActor);
delete aActor;
return true;
}
void RemoteWorkerParent::ActorDestroy(IProtocol::ActorDestroyReason) {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
RefPtr<ContentParent> parent = BackgroundParent::GetContentParent(Manager());
// Parent is null if the child actor runs on the parent process.
if (parent) {
RefPtr<UnregisterActorRunnable> r =
new UnregisterActorRunnable(parent.forget());
SchedulerGroup::Dispatch(TaskCategory::Other, r.forget());
}
if (mController) {
mController->NoteDeadWorkerActor();
mController = nullptr;
}
}
IPCResult RemoteWorkerParent::RecvCreated(const bool& aStatus) {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
if (!mController) {
return IPC_OK();
}
if (aStatus) {
mController->CreationSucceeded();
} else {
mController->CreationFailed();
}
return IPC_OK();
}
IPCResult RemoteWorkerParent::RecvError(const ErrorValue& aValue) {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
if (mController) {
mController->ErrorPropagation(aValue);
}
return IPC_OK();
}
void RemoteWorkerParent::MaybeSendDelete() {
if (mDeleteSent) {
return;
}
// For some reason, if the following two lines are swapped, ASan says there's
// a UAF...
mDeleteSent = true;
Unused << Send__delete__(this);
}
IPCResult RemoteWorkerParent::RecvClose() {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
if (mController) {
mController->WorkerTerminated();
}
MaybeSendDelete();
return IPC_OK();
}
void RemoteWorkerParent::SetController(RemoteWorkerController* aController) {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
mController = aController;
}
IPCResult RemoteWorkerParent::RecvSetServiceWorkerSkipWaitingFlag(
SetServiceWorkerSkipWaitingFlagResolver&& aResolve) {
AssertIsOnBackgroundThread();
MOZ_ASSERT(XRE_IsParentProcess());
if (mController) {
mController->SetServiceWorkerSkipWaitingFlag()->Then(
GetCurrentThreadSerialEventTarget(), __func__,
[resolve = aResolve](bool /* unused */) { resolve(true); },
[resolve = aResolve](nsresult /* unused */) { resolve(false); });
} else {
aResolve(false);
}
return IPC_OK();
}
} // namespace dom
} // namespace mozilla
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