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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 "ServiceWorkerUnregisterJob.h"
#include "nsIPushService.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/Unused.h"
#include "Workers.h"
#include "ServiceWorkerManager.h"
namespace mozilla {
namespace dom {
namespace workers {
class ServiceWorkerUnregisterJob::PushUnsubscribeCallback final :
public nsIUnsubscribeResultCallback
{
public:
NS_DECL_ISUPPORTS
explicit PushUnsubscribeCallback(ServiceWorkerUnregisterJob* aJob)
: mJob(aJob)
{
AssertIsOnMainThread();
}
NS_IMETHOD
OnUnsubscribe(nsresult aStatus, bool) override
{
// Warn if unsubscribing fails, but don't prevent the worker from
// unregistering.
Unused << NS_WARN_IF(NS_FAILED(aStatus));
mJob->Unregister();
return NS_OK;
}
private:
~PushUnsubscribeCallback()
{
}
RefPtr<ServiceWorkerUnregisterJob> mJob;
};
NS_IMPL_ISUPPORTS(ServiceWorkerUnregisterJob::PushUnsubscribeCallback,
nsIUnsubscribeResultCallback)
ServiceWorkerUnregisterJob::ServiceWorkerUnregisterJob(nsIPrincipal* aPrincipal,
const nsACString& aScope,
bool aSendToParent)
: ServiceWorkerJob(Type::Unregister, aPrincipal, aScope, EmptyCString())
, mResult(false)
, mSendToParent(aSendToParent)
{
}
bool
ServiceWorkerUnregisterJob::GetResult() const
{
AssertIsOnMainThread();
return mResult;
}
ServiceWorkerUnregisterJob::~ServiceWorkerUnregisterJob()
{
}
void
ServiceWorkerUnregisterJob::AsyncExecute()
{
AssertIsOnMainThread();
if (Canceled()) {
Finish(NS_ERROR_DOM_ABORT_ERR);
return;
}
// Push API, section 5: "When a service worker registration is unregistered,
// any associated push subscription must be deactivated." To ensure the
// service worker registration isn't cleared as we're unregistering, we
// unsubscribe first.
nsCOMPtr<nsIPushService> pushService =
do_GetService("@mozilla.org/push/Service;1");
if (NS_WARN_IF(!pushService)) {
Unregister();
return;
}
nsCOMPtr<nsIUnsubscribeResultCallback> unsubscribeCallback =
new PushUnsubscribeCallback(this);
nsresult rv = pushService->Unsubscribe(NS_ConvertUTF8toUTF16(mScope),
mPrincipal, unsubscribeCallback);
if (NS_WARN_IF(NS_FAILED(rv))) {
Unregister();
}
}
void
ServiceWorkerUnregisterJob::Unregister()
{
AssertIsOnMainThread();
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (Canceled() || !swm) {
Finish(NS_ERROR_DOM_ABORT_ERR);
return;
}
// Step 1 of the Unregister algorithm requires checking that the
// client origin matches the scope's origin. We perform this in
// registration->update() method directly since we don't have that
// client information available here.
// "Let registration be the result of running [[Get Registration]]
// algorithm passing scope as the argument."
RefPtr<ServiceWorkerRegistrationInfo> registration =
swm->GetRegistration(mPrincipal, mScope);
if (!registration) {
// "If registration is null, then, resolve promise with false."
Finish(NS_OK);
return;
}
// Note, we send the message to remove the registration from disk now even
// though we may only set the mPendingUninstall flag below. This is
// necessary to ensure the registration is removed if the controlled
// clients are closed by shutting down the browser. If the registration
// is resurrected by clearing mPendingUninstall then it should be saved
// to disk again.
if (mSendToParent && !registration->mPendingUninstall) {
swm->MaybeSendUnregister(mPrincipal, mScope);
}
// "Set registration's uninstalling flag."
registration->mPendingUninstall = true;
// "Resolve promise with true"
mResult = true;
InvokeResultCallbacks(NS_OK);
// "If no service worker client is using registration..."
if (!registration->IsControllingDocuments() && registration->IsIdle()) {
// "Invoke [[Clear Registration]]..."
swm->RemoveRegistration(registration);
}
Finish(NS_OK);
}
} // namespace workers
} // namespace dom
} // namespace mozilla
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