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gecko-dev/dom/serviceworkers/ServiceWorkerPrivate.cpp

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70 KiB
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Этот файл содержит неоднозначные символы Юникода!

Этот файл содержит неоднозначные символы Юникода, которые могут быть перепутаны с другими в текущей локали. Если это намеренно, можете спокойно проигнорировать это предупреждение. Используйте кнопку Экранировать, чтобы подсветить эти символы.

/* -*- 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 "ServiceWorkerPrivate.h"
#include "ServiceWorkerManager.h"
#include "nsContentUtils.h"
#include "nsICacheInfoChannel.h"
#include "nsIHttpChannelInternal.h"
#include "nsIHttpHeaderVisitor.h"
#include "nsINamed.h"
#include "nsINetworkInterceptController.h"
#include "nsIPushErrorReporter.h"
#include "nsISupportsImpl.h"
#include "nsITimedChannel.h"
#include "nsIUploadChannel2.h"
#include "nsNetUtil.h"
#include "nsProxyRelease.h"
#include "nsQueryObject.h"
#include "nsStreamUtils.h"
#include "nsStringStream.h"
#include "WorkerRunnable.h"
#include "WorkerScope.h"
#include "mozilla/Assertions.h"
#include "mozilla/dom/Client.h"
#include "mozilla/dom/ClientIPCTypes.h"
#include "mozilla/dom/DOMPrefs.h"
#include "mozilla/dom/FetchUtil.h"
#include "mozilla/dom/IndexedDatabaseManager.h"
#include "mozilla/dom/InternalHeaders.h"
#include "mozilla/dom/NotificationEvent.h"
#include "mozilla/dom/PromiseNativeHandler.h"
#include "mozilla/dom/PushEventBinding.h"
#include "mozilla/dom/RequestBinding.h"
#include "mozilla/Unused.h"
using namespace mozilla;
using namespace mozilla::dom;
namespace mozilla {
namespace dom {
using mozilla::ipc::PrincipalInfo;
NS_IMPL_CYCLE_COLLECTING_NATIVE_ADDREF(ServiceWorkerPrivate)
NS_IMPL_CYCLE_COLLECTING_NATIVE_RELEASE(ServiceWorkerPrivate)
NS_IMPL_CYCLE_COLLECTION(ServiceWorkerPrivate, mSupportsArray)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(ServiceWorkerPrivate, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(ServiceWorkerPrivate, Release)
// Tracks the "dom.serviceWorkers.disable_open_click_delay" preference. Modified
// on main thread, read on worker threads.
// It is updated every time a "notificationclick" event is dispatched. While
// this is done without synchronization, at the worst, the thread will just get
// an older value within which a popup is allowed to be displayed, which will
// still be a valid value since it was set prior to dispatching the runnable.
Atomic<uint32_t> gDOMDisableOpenClickDelay(0);
// Used to keep track of pending waitUntil as well as in-flight extendable events.
// When the last token is released, we attempt to terminate the worker.
class KeepAliveToken final : public nsISupports
{
public:
NS_DECL_ISUPPORTS
explicit KeepAliveToken(ServiceWorkerPrivate* aPrivate)
: mPrivate(aPrivate)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aPrivate);
mPrivate->AddToken();
}
private:
~KeepAliveToken()
{
MOZ_ASSERT(NS_IsMainThread());
mPrivate->ReleaseToken();
}
RefPtr<ServiceWorkerPrivate> mPrivate;
};
NS_IMPL_ISUPPORTS0(KeepAliveToken)
ServiceWorkerPrivate::ServiceWorkerPrivate(ServiceWorkerInfo* aInfo)
: mInfo(aInfo)
, mDebuggerCount(0)
, mTokenCount(0)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aInfo);
mIdleWorkerTimer = NS_NewTimer();
MOZ_ASSERT(mIdleWorkerTimer);
}
ServiceWorkerPrivate::~ServiceWorkerPrivate()
{
MOZ_ASSERT(!mWorkerPrivate);
MOZ_ASSERT(!mTokenCount);
MOZ_ASSERT(!mInfo);
MOZ_ASSERT(mSupportsArray.IsEmpty());
mIdleWorkerTimer->Cancel();
}
namespace {
class CheckScriptEvaluationWithCallback final : public WorkerRunnable
{
nsMainThreadPtrHandle<ServiceWorkerPrivate> mServiceWorkerPrivate;
nsMainThreadPtrHandle<KeepAliveToken> mKeepAliveToken;
// The script evaluation result must be reported even if the runnable
// is cancelled.
RefPtr<LifeCycleEventCallback> mScriptEvaluationCallback;
#ifdef DEBUG
bool mDone;
#endif
public:
CheckScriptEvaluationWithCallback(WorkerPrivate* aWorkerPrivate,
ServiceWorkerPrivate* aServiceWorkerPrivate,
KeepAliveToken* aKeepAliveToken,
LifeCycleEventCallback* aScriptEvaluationCallback)
: WorkerRunnable(aWorkerPrivate)
, mServiceWorkerPrivate(new nsMainThreadPtrHolder<ServiceWorkerPrivate>(
"CheckScriptEvaluationWithCallback::mServiceWorkerPrivate", aServiceWorkerPrivate))
, mKeepAliveToken(new nsMainThreadPtrHolder<KeepAliveToken>(
"CheckScriptEvaluationWithCallback::mKeepAliveToken", aKeepAliveToken))
, mScriptEvaluationCallback(aScriptEvaluationCallback)
#ifdef DEBUG
, mDone(false)
#endif
{
MOZ_ASSERT(NS_IsMainThread());
}
~CheckScriptEvaluationWithCallback()
{
MOZ_ASSERT(mDone);
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
aWorkerPrivate->AssertIsOnWorkerThread();
bool fetchHandlerWasAdded = aWorkerPrivate->FetchHandlerWasAdded();
nsCOMPtr<nsIRunnable> runnable = NewRunnableMethod<bool>(
"dom::CheckScriptEvaluationWithCallback::ReportFetchFlag",
this,
&CheckScriptEvaluationWithCallback::ReportFetchFlag,
fetchHandlerWasAdded);
aWorkerPrivate->DispatchToMainThread(runnable.forget());
ReportScriptEvaluationResult(aWorkerPrivate->WorkerScriptExecutedSuccessfully());
return true;
}
void
ReportFetchFlag(bool aFetchHandlerWasAdded)
{
MOZ_ASSERT(NS_IsMainThread());
mServiceWorkerPrivate->SetHandlesFetch(aFetchHandlerWasAdded);
}
nsresult
Cancel() override
{
ReportScriptEvaluationResult(false);
return WorkerRunnable::Cancel();
}
private:
void
ReportScriptEvaluationResult(bool aScriptEvaluationResult)
{
#ifdef DEBUG
mDone = true;
#endif
mScriptEvaluationCallback->SetResult(aScriptEvaluationResult);
MOZ_ALWAYS_SUCCEEDS(mWorkerPrivate->DispatchToMainThread(mScriptEvaluationCallback));
}
};
} // anonymous namespace
nsresult
ServiceWorkerPrivate::CheckScriptEvaluation(LifeCycleEventCallback* aScriptEvaluationCallback)
{
nsresult rv = SpawnWorkerIfNeeded(LifeCycleEvent, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
RefPtr<WorkerRunnable> r = new CheckScriptEvaluationWithCallback(mWorkerPrivate,
this, token,
aScriptEvaluationCallback);
if (NS_WARN_IF(!r->Dispatch())) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
namespace {
enum ExtendableEventResult {
Rejected = 0,
Resolved
};
class ExtendableEventCallback {
public:
virtual void
FinishedWithResult(ExtendableEventResult aResult) = 0;
NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
};
class KeepAliveHandler final : public WorkerHolder
, public ExtendableEvent::ExtensionsHandler
, public PromiseNativeHandler
{
// This class manages lifetime extensions added by calling WaitUntil()
// or RespondWith(). We allow new extensions as long as we still hold
// |mKeepAliveToken|. Once the last promise was settled, we queue a microtask
// which releases the token and prevents further extensions. By doing this,
// we give other pending microtasks a chance to continue adding extensions.
nsMainThreadPtrHandle<KeepAliveToken> mKeepAliveToken;
WorkerPrivate* MOZ_NON_OWNING_REF mWorkerPrivate;
bool mWorkerHolderAdded;
// We start holding a self reference when the first extension promise is
// added. As far as I can tell, the only case where this is useful is when
// we're waiting indefinitely on a promise that's no longer reachable
// and will never be settled.
// The cycle is broken when the last promise was settled or when the
// worker is shutting down.
RefPtr<KeepAliveHandler> mSelfRef;
// Called when the last promise was settled.
RefPtr<ExtendableEventCallback> mCallback;
uint32_t mPendingPromisesCount;
// We don't actually care what values the promises resolve to, only whether
// any of them were rejected.
bool mRejected;
public:
NS_DECL_ISUPPORTS
explicit KeepAliveHandler(const nsMainThreadPtrHandle<KeepAliveToken>& aKeepAliveToken,
ExtendableEventCallback* aCallback)
: WorkerHolder("KeepAliveHolder")
, mKeepAliveToken(aKeepAliveToken)
, mWorkerPrivate(GetCurrentThreadWorkerPrivate())
, mWorkerHolderAdded(false)
, mCallback(aCallback)
, mPendingPromisesCount(0)
, mRejected(false)
{
MOZ_ASSERT(mKeepAliveToken);
MOZ_ASSERT(mWorkerPrivate);
}
bool
UseWorkerHolder()
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
MOZ_ASSERT(!mWorkerHolderAdded);
mWorkerHolderAdded = HoldWorker(mWorkerPrivate, Terminating);
return mWorkerHolderAdded;
}
bool
WaitOnPromise(Promise& aPromise) override
{
if (!mKeepAliveToken) {
MOZ_ASSERT(!mSelfRef, "We shouldn't be holding a self reference!");
return false;
}
if (!mSelfRef) {
MOZ_ASSERT(!mPendingPromisesCount);
mSelfRef = this;
}
++mPendingPromisesCount;
aPromise.AppendNativeHandler(this);
return true;
}
void
ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override
{
RemovePromise(Resolved);
}
void
RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override
{
RemovePromise(Rejected);
}
bool
Notify(Status aStatus) override
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
if (aStatus < Terminating) {
return true;
}
MaybeCleanup();
return true;
}
void
MaybeDone()
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
if (mPendingPromisesCount) {
return;
}
if (mCallback) {
mCallback->FinishedWithResult(mRejected ? Rejected : Resolved);
}
MaybeCleanup();
}
private:
~KeepAliveHandler()
{
MaybeCleanup();
}
void
MaybeCleanup()
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
if (!mKeepAliveToken) {
return;
}
if (mWorkerHolderAdded) {
ReleaseWorker();
}
mKeepAliveToken = nullptr;
mSelfRef = nullptr;
}
void
RemovePromise(ExtendableEventResult aResult)
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
MOZ_DIAGNOSTIC_ASSERT(mPendingPromisesCount > 0);
// Note: mSelfRef and mKeepAliveToken can be nullptr here
// if MaybeCleanup() was called just before a promise
// settled. This can happen, for example, if the
// worker thread is being terminated for running too
// long, browser shutdown, etc.
mRejected |= (aResult == Rejected);
--mPendingPromisesCount;
if (mPendingPromisesCount) {
return;
}
CycleCollectedJSContext* cx = CycleCollectedJSContext::Get();
MOZ_ASSERT(cx);
RefPtr<nsIRunnable> r =
NewRunnableMethod("dom::KeepAliveHandler::MaybeDone",
this,
&KeepAliveHandler::MaybeDone);
cx->DispatchToMicroTask(r.forget());
}
};
NS_IMPL_ISUPPORTS0(KeepAliveHandler)
class RegistrationUpdateRunnable : public Runnable
{
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo> mRegistration;
const bool mNeedTimeCheck;
public:
RegistrationUpdateRunnable(
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo>& aRegistration,
bool aNeedTimeCheck)
: Runnable("dom::RegistrationUpdateRunnable")
, mRegistration(aRegistration)
, mNeedTimeCheck(aNeedTimeCheck)
{
MOZ_DIAGNOSTIC_ASSERT(mRegistration);
}
NS_IMETHOD
Run() override
{
if (mNeedTimeCheck) {
mRegistration->MaybeScheduleTimeCheckAndUpdate();
} else {
mRegistration->MaybeScheduleUpdate();
}
return NS_OK;
}
};
class ExtendableEventWorkerRunnable : public WorkerRunnable
{
protected:
nsMainThreadPtrHandle<KeepAliveToken> mKeepAliveToken;
public:
ExtendableEventWorkerRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aKeepAliveToken)
: WorkerRunnable(aWorkerPrivate)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aKeepAliveToken);
mKeepAliveToken =
new nsMainThreadPtrHolder<KeepAliveToken>(
"ExtendableEventWorkerRunnable::mKeepAliveToken", aKeepAliveToken);
}
nsresult
DispatchExtendableEventOnWorkerScope(JSContext* aCx,
WorkerGlobalScope* aWorkerScope,
ExtendableEvent* aEvent,
ExtendableEventCallback* aCallback)
{
MOZ_ASSERT(aWorkerScope);
MOZ_ASSERT(aEvent);
nsCOMPtr<nsIGlobalObject> sgo = aWorkerScope;
WidgetEvent* internalEvent = aEvent->WidgetEventPtr();
RefPtr<KeepAliveHandler> keepAliveHandler =
new KeepAliveHandler(mKeepAliveToken, aCallback);
if (NS_WARN_IF(!keepAliveHandler->UseWorkerHolder())) {
return NS_ERROR_FAILURE;
}
// This must always be set *before* dispatching the event, otherwise
// waitUntil calls will fail.
aEvent->SetKeepAliveHandler(keepAliveHandler);
ErrorResult result;
bool dummy;
result = aWorkerScope->DispatchEvent(aEvent, &dummy);
if (NS_WARN_IF(result.Failed())) {
result.SuppressException();
return NS_ERROR_FAILURE;
}
// [[ If e’s extend lifetime promises is empty, unset e’s extensions allowed
// flag and abort these steps. ]]
keepAliveHandler->MaybeDone();
// We don't block the event when getting an exception but still report the
// error message.
// Report exception message. Note: This will not stop the event.
if (internalEvent->mFlags.mExceptionWasRaised) {
result.SuppressException();
return NS_ERROR_XPC_JS_THREW_EXCEPTION;
}
return NS_OK;
}
};
class SendMessageEventRunnable final : public ExtendableEventWorkerRunnable
, public StructuredCloneHolder
{
const ClientInfoAndState mClientInfoAndState;
public:
SendMessageEventRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aKeepAliveToken,
const ClientInfoAndState& aClientInfoAndState)
: ExtendableEventWorkerRunnable(aWorkerPrivate, aKeepAliveToken)
, StructuredCloneHolder(CloningSupported, TransferringSupported,
StructuredCloneScope::SameProcessDifferentThread)
, mClientInfoAndState(aClientInfoAndState)
{
MOZ_ASSERT(NS_IsMainThread());
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
JS::Rooted<JS::Value> messageData(aCx);
nsCOMPtr<nsIGlobalObject> sgo = aWorkerPrivate->GlobalScope();
ErrorResult rv;
Read(sgo, aCx, &messageData, rv);
if (NS_WARN_IF(rv.Failed())) {
return true;
}
Sequence<OwningNonNull<MessagePort>> ports;
if (!TakeTransferredPortsAsSequence(ports)) {
return true;
}
RootedDictionary<ExtendableMessageEventInit> init(aCx);
init.mBubbles = false;
init.mCancelable = false;
init.mData = messageData;
init.mPorts = ports;
init.mSource.SetValue().SetAsClient() =
new Client(sgo, mClientInfoAndState);
RefPtr<EventTarget> target = aWorkerPrivate->GlobalScope();
RefPtr<ExtendableMessageEvent> extendableEvent =
ExtendableMessageEvent::Constructor(target, NS_LITERAL_STRING("message"),
init, rv);
if (NS_WARN_IF(rv.Failed())) {
rv.SuppressException();
return false;
}
extendableEvent->SetTrusted(true);
return NS_SUCCEEDED(DispatchExtendableEventOnWorkerScope(aCx,
aWorkerPrivate->GlobalScope(),
extendableEvent,
nullptr));
}
};
} // anonymous namespace
nsresult
ServiceWorkerPrivate::SendMessageEvent(JSContext* aCx,
JS::Handle<JS::Value> aMessage,
const Sequence<JSObject*>& aTransferable,
const ClientInfoAndState& aClientInfoAndState)
{
MOZ_ASSERT(NS_IsMainThread());
ErrorResult rv(SpawnWorkerIfNeeded(MessageEvent, nullptr));
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
JS::Rooted<JS::Value> transferable(aCx, JS::UndefinedHandleValue);
rv = nsContentUtils::CreateJSValueFromSequenceOfObject(aCx, aTransferable,
&transferable);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
RefPtr<SendMessageEventRunnable> runnable =
new SendMessageEventRunnable(mWorkerPrivate, token, aClientInfoAndState);
runnable->Write(aCx, aMessage, transferable, JS::CloneDataPolicy(), rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
if (!runnable->Dispatch()) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
namespace {
// Handle functional event
// 9.9.7 If the time difference in seconds calculated by the current time minus
// registration's last update check time is greater than 86400, invoke Soft Update
// algorithm.
class ExtendableFunctionalEventWorkerRunnable : public ExtendableEventWorkerRunnable
{
protected:
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo> mRegistration;
public:
ExtendableFunctionalEventWorkerRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aKeepAliveToken,
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo>& aRegistration)
: ExtendableEventWorkerRunnable(aWorkerPrivate, aKeepAliveToken)
, mRegistration(aRegistration)
{
MOZ_DIAGNOSTIC_ASSERT(aRegistration);
}
void
PostRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate, bool aRunResult) override
{
// Sub-class PreRun() or WorkerRun() methods could clear our mRegistration.
if (mRegistration) {
nsCOMPtr<nsIRunnable> runnable =
new RegistrationUpdateRunnable(mRegistration, true /* time check */);
aWorkerPrivate->DispatchToMainThread(runnable.forget());
}
ExtendableEventWorkerRunnable::PostRun(aCx, aWorkerPrivate, aRunResult);
}
};
/*
* Fires 'install' event on the ServiceWorkerGlobalScope. Modifies busy count
* since it fires the event. This is ok since there can't be nested
* ServiceWorkers, so the parent thread -> worker thread requirement for
* runnables is satisfied.
*/
class LifecycleEventWorkerRunnable : public ExtendableEventWorkerRunnable
{
nsString mEventName;
RefPtr<LifeCycleEventCallback> mCallback;
public:
LifecycleEventWorkerRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aToken,
const nsAString& aEventName,
LifeCycleEventCallback* aCallback)
: ExtendableEventWorkerRunnable(aWorkerPrivate, aToken)
, mEventName(aEventName)
, mCallback(aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
MOZ_ASSERT(aWorkerPrivate);
return DispatchLifecycleEvent(aCx, aWorkerPrivate);
}
nsresult
Cancel() override
{
mCallback->SetResult(false);
MOZ_ALWAYS_SUCCEEDS(mWorkerPrivate->DispatchToMainThread(mCallback));
return WorkerRunnable::Cancel();
}
private:
bool
DispatchLifecycleEvent(JSContext* aCx, WorkerPrivate* aWorkerPrivate);
};
/*
* Used to handle ExtendableEvent::waitUntil() and catch abnormal worker
* termination during the execution of life cycle events. It is responsible
* with advancing the job queue for install/activate tasks.
*/
class LifeCycleEventWatcher final : public ExtendableEventCallback,
public WorkerHolder
{
WorkerPrivate* mWorkerPrivate;
RefPtr<LifeCycleEventCallback> mCallback;
bool mDone;
~LifeCycleEventWatcher()
{
if (mDone) {
return;
}
MOZ_ASSERT(GetCurrentThreadWorkerPrivate() == mWorkerPrivate);
// XXXcatalinb: If all the promises passed to waitUntil go out of scope,
// the resulting Promise.all will be cycle collected and it will drop its
// native handlers (including this object). Instead of waiting for a timeout
// we report the failure now.
ReportResult(false);
}
public:
NS_INLINE_DECL_REFCOUNTING(LifeCycleEventWatcher, override)
LifeCycleEventWatcher(WorkerPrivate* aWorkerPrivate,
LifeCycleEventCallback* aCallback)
: WorkerHolder("LifeCycleEventWatcher")
, mWorkerPrivate(aWorkerPrivate)
, mCallback(aCallback)
, mDone(false)
{
MOZ_ASSERT(aWorkerPrivate);
aWorkerPrivate->AssertIsOnWorkerThread();
}
bool
Init()
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
// We need to listen for worker termination in case the event handler
// never completes or never resolves the waitUntil promise. There are
// two possible scenarios:
// 1. The keepAlive token expires and the worker is terminated, in which
// case the registration/update promise will be rejected
// 2. A new service worker is registered which will terminate the current
// installing worker.
if (NS_WARN_IF(!HoldWorker(mWorkerPrivate, Terminating))) {
NS_WARNING("LifeCycleEventWatcher failed to add feature.");
ReportResult(false);
return false;
}
return true;
}
bool
Notify(Status aStatus) override
{
if (aStatus < Terminating) {
return true;
}
MOZ_ASSERT(GetCurrentThreadWorkerPrivate() == mWorkerPrivate);
ReportResult(false);
return true;
}
void
ReportResult(bool aResult)
{
mWorkerPrivate->AssertIsOnWorkerThread();
if (mDone) {
return;
}
mDone = true;
mCallback->SetResult(aResult);
nsresult rv = mWorkerPrivate->DispatchToMainThread(mCallback);
if (NS_WARN_IF(NS_FAILED(rv))) {
MOZ_CRASH("Failed to dispatch life cycle event handler.");
}
ReleaseWorker();
}
void
FinishedWithResult(ExtendableEventResult aResult) override
{
MOZ_ASSERT(GetCurrentThreadWorkerPrivate() == mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
ReportResult(aResult == Resolved);
// Note, all WaitUntil() rejections are reported to client consoles
// by the WaitUntilHandler in ServiceWorkerEvents. This ensures that
// errors in non-lifecycle events like FetchEvent and PushEvent are
// reported properly.
}
};
bool
LifecycleEventWorkerRunnable::DispatchLifecycleEvent(JSContext* aCx,
WorkerPrivate* aWorkerPrivate)
{
aWorkerPrivate->AssertIsOnWorkerThread();
MOZ_ASSERT(aWorkerPrivate->IsServiceWorker());
RefPtr<ExtendableEvent> event;
RefPtr<EventTarget> target = aWorkerPrivate->GlobalScope();
if (mEventName.EqualsASCII("install") || mEventName.EqualsASCII("activate")) {
ExtendableEventInit init;
init.mBubbles = false;
init.mCancelable = false;
event = ExtendableEvent::Constructor(target, mEventName, init);
} else {
MOZ_CRASH("Unexpected lifecycle event");
}
event->SetTrusted(true);
// It is important to initialize the watcher before actually dispatching
// the event in order to catch worker termination while the event handler
// is still executing. This can happen with infinite loops, for example.
RefPtr<LifeCycleEventWatcher> watcher =
new LifeCycleEventWatcher(aWorkerPrivate, mCallback);
if (!watcher->Init()) {
return true;
}
nsresult rv = DispatchExtendableEventOnWorkerScope(aCx,
aWorkerPrivate->GlobalScope(),
event,
watcher);
// Do not fail event processing when an exception is thrown.
if (NS_FAILED(rv) && rv != NS_ERROR_XPC_JS_THREW_EXCEPTION) {
watcher->ReportResult(false);
}
return true;
}
} // anonymous namespace
nsresult
ServiceWorkerPrivate::SendLifeCycleEvent(const nsAString& aEventType,
LifeCycleEventCallback* aCallback,
nsIRunnable* aLoadFailure)
{
nsresult rv = SpawnWorkerIfNeeded(LifeCycleEvent, aLoadFailure);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
RefPtr<WorkerRunnable> r = new LifecycleEventWorkerRunnable(mWorkerPrivate,
token,
aEventType,
aCallback);
if (NS_WARN_IF(!r->Dispatch())) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
namespace {
class PushErrorReporter final : public ExtendableEventCallback
{
WorkerPrivate* mWorkerPrivate;
nsString mMessageId;
~PushErrorReporter()
{
}
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PushErrorReporter, override)
PushErrorReporter(WorkerPrivate* aWorkerPrivate,
const nsAString& aMessageId)
: mWorkerPrivate(aWorkerPrivate)
, mMessageId(aMessageId)
{
mWorkerPrivate->AssertIsOnWorkerThread();
}
void
FinishedWithResult(ExtendableEventResult aResult) override
{
if (aResult == Rejected) {
Report(nsIPushErrorReporter::DELIVERY_UNHANDLED_REJECTION);
}
}
void Report(uint16_t aReason = nsIPushErrorReporter::DELIVERY_INTERNAL_ERROR)
{
WorkerPrivate* workerPrivate = mWorkerPrivate;
mWorkerPrivate->AssertIsOnWorkerThread();
if (NS_WARN_IF(aReason > nsIPushErrorReporter::DELIVERY_INTERNAL_ERROR) ||
mMessageId.IsEmpty()) {
return;
}
nsCOMPtr<nsIRunnable> runnable = NewRunnableMethod<uint16_t>(
"dom::PushErrorReporter::ReportOnMainThread",
this,
&PushErrorReporter::ReportOnMainThread,
aReason);
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
workerPrivate->DispatchToMainThread(runnable.forget())));
}
void ReportOnMainThread(uint16_t aReason)
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIPushErrorReporter> reporter =
do_GetService("@mozilla.org/push/Service;1");
if (reporter) {
nsresult rv = reporter->ReportDeliveryError(mMessageId, aReason);
Unused << NS_WARN_IF(NS_FAILED(rv));
}
}
};
class SendPushEventRunnable final : public ExtendableFunctionalEventWorkerRunnable
{
nsString mMessageId;
Maybe<nsTArray<uint8_t>> mData;
public:
SendPushEventRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aKeepAliveToken,
const nsAString& aMessageId,
const Maybe<nsTArray<uint8_t>>& aData,
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo> aRegistration)
: ExtendableFunctionalEventWorkerRunnable(
aWorkerPrivate, aKeepAliveToken, aRegistration)
, mMessageId(aMessageId)
, mData(aData)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aWorkerPrivate->IsServiceWorker());
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
MOZ_ASSERT(aWorkerPrivate);
GlobalObject globalObj(aCx, aWorkerPrivate->GlobalScope()->GetWrapper());
RefPtr<PushErrorReporter> errorReporter =
new PushErrorReporter(aWorkerPrivate, mMessageId);
PushEventInit pei;
if (mData) {
const nsTArray<uint8_t>& bytes = mData.ref();
JSObject* data = Uint8Array::Create(aCx, bytes.Length(), bytes.Elements());
if (!data) {
errorReporter->Report();
return false;
}
pei.mData.Construct().SetAsArrayBufferView().Init(data);
}
pei.mBubbles = false;
pei.mCancelable = false;
ErrorResult result;
RefPtr<PushEvent> event =
PushEvent::Constructor(globalObj, NS_LITERAL_STRING("push"), pei, result);
if (NS_WARN_IF(result.Failed())) {
result.SuppressException();
errorReporter->Report();
return false;
}
event->SetTrusted(true);
nsresult rv = DispatchExtendableEventOnWorkerScope(aCx,
aWorkerPrivate->GlobalScope(),
event,
errorReporter);
if (NS_FAILED(rv)) {
// We don't cancel WorkerPrivate when catching an excetpion.
errorReporter->Report(nsIPushErrorReporter::DELIVERY_UNCAUGHT_EXCEPTION);
}
return true;
}
};
class SendPushSubscriptionChangeEventRunnable final : public ExtendableEventWorkerRunnable
{
public:
explicit SendPushSubscriptionChangeEventRunnable(
WorkerPrivate* aWorkerPrivate, KeepAliveToken* aKeepAliveToken)
: ExtendableEventWorkerRunnable(aWorkerPrivate, aKeepAliveToken)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aWorkerPrivate->IsServiceWorker());
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
MOZ_ASSERT(aWorkerPrivate);
RefPtr<EventTarget> target = aWorkerPrivate->GlobalScope();
ExtendableEventInit init;
init.mBubbles = false;
init.mCancelable = false;
RefPtr<ExtendableEvent> event =
ExtendableEvent::Constructor(target,
NS_LITERAL_STRING("pushsubscriptionchange"),
init);
event->SetTrusted(true);
DispatchExtendableEventOnWorkerScope(aCx, aWorkerPrivate->GlobalScope(),
event, nullptr);
return true;
}
};
} // anonymous namespace
nsresult
ServiceWorkerPrivate::SendPushEvent(const nsAString& aMessageId,
const Maybe<nsTArray<uint8_t>>& aData,
ServiceWorkerRegistrationInfo* aRegistration)
{
nsresult rv = SpawnWorkerIfNeeded(PushEvent, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo> regInfo(
new nsMainThreadPtrHolder<ServiceWorkerRegistrationInfo>(
"ServiceWorkerRegistrationInfoProxy", aRegistration, false));
RefPtr<WorkerRunnable> r = new SendPushEventRunnable(mWorkerPrivate,
token,
aMessageId,
aData,
regInfo);
if (mInfo->State() == ServiceWorkerState::Activating) {
mPendingFunctionalEvents.AppendElement(r.forget());
return NS_OK;
}
MOZ_ASSERT(mInfo->State() == ServiceWorkerState::Activated);
if (NS_WARN_IF(!r->Dispatch())) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult
ServiceWorkerPrivate::SendPushSubscriptionChangeEvent()
{
nsresult rv = SpawnWorkerIfNeeded(PushSubscriptionChangeEvent, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
RefPtr<WorkerRunnable> r =
new SendPushSubscriptionChangeEventRunnable(mWorkerPrivate, token);
if (NS_WARN_IF(!r->Dispatch())) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
namespace {
class AllowWindowInteractionHandler final : public ExtendableEventCallback
, public nsITimerCallback
, public nsINamed
, public WorkerHolder
{
nsCOMPtr<nsITimer> mTimer;
~AllowWindowInteractionHandler()
{
// We must either fail to initialize or call ClearWindowAllowed.
MOZ_DIAGNOSTIC_ASSERT(!mTimer);
MOZ_DIAGNOSTIC_ASSERT(!mWorkerPrivate);
}
void
ClearWindowAllowed(WorkerPrivate* aWorkerPrivate)
{
MOZ_ASSERT(aWorkerPrivate);
aWorkerPrivate->AssertIsOnWorkerThread();
if (!mTimer) {
return;
}
// XXXcatalinb: This *might* be executed after the global was unrooted, in
// which case GlobalScope() will return null. Making the check here just
// to be safe.
WorkerGlobalScope* globalScope = aWorkerPrivate->GlobalScope();
if (!globalScope) {
return;
}
globalScope->ConsumeWindowInteraction();
mTimer->Cancel();
mTimer = nullptr;
ReleaseWorker();
}
void
StartClearWindowTimer(WorkerPrivate* aWorkerPrivate)
{
MOZ_ASSERT(aWorkerPrivate);
aWorkerPrivate->AssertIsOnWorkerThread();
MOZ_ASSERT(!mTimer);
nsresult rv;
nsCOMPtr<nsITimer> timer = NS_NewTimer(aWorkerPrivate->ControlEventTarget());
if (NS_WARN_IF(!timer)) {
return;
}
if (!HoldWorker(aWorkerPrivate, Closing)) {
return;
}
aWorkerPrivate->GlobalScope()->AllowWindowInteraction();
timer.swap(mTimer);
// We swap first and then initialize the timer so that even if initializing
// fails, we still clean the busy count and interaction count correctly.
// The timer can't be initialized before modifying the busy count since the
// timer thread could run and call the timeout but the worker may
// already be terminating and modifying the busy count could fail.
rv = mTimer->InitWithCallback(this,
gDOMDisableOpenClickDelay,
nsITimer::TYPE_ONE_SHOT);
if (NS_WARN_IF(NS_FAILED(rv))) {
ClearWindowAllowed(aWorkerPrivate);
return;
}
}
// nsITimerCallback virtual methods
NS_IMETHOD
Notify(nsITimer* aTimer) override
{
MOZ_DIAGNOSTIC_ASSERT(mTimer == aTimer);
ClearWindowAllowed(mWorkerPrivate);
return NS_OK;
}
// nsINamed virtual methods
NS_IMETHOD
GetName(nsACString& aName) override
{
aName.AssignLiteral("AllowWindowInteractionHandler");
return NS_OK;
}
// WorkerHolder virtual methods
bool
Notify(Status aStatus) override
{
// We could try to hold the worker alive until the timer fires, but other
// APIs are not likely to work in this partially shutdown state. We might
// as well let the worker thread exit.
ClearWindowAllowed(mWorkerPrivate);
return true;
}
public:
NS_DECL_THREADSAFE_ISUPPORTS
explicit AllowWindowInteractionHandler(WorkerPrivate* aWorkerPrivate)
: WorkerHolder("AllowWindowInteractionHandler")
{
StartClearWindowTimer(aWorkerPrivate);
}
void
FinishedWithResult(ExtendableEventResult /* aResult */) override
{
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
ClearWindowAllowed(workerPrivate);
}
};
NS_IMPL_ISUPPORTS(AllowWindowInteractionHandler, nsITimerCallback, nsINamed)
class SendNotificationEventRunnable final : public ExtendableEventWorkerRunnable
{
const nsString mEventName;
const nsString mID;
const nsString mTitle;
const nsString mDir;
const nsString mLang;
const nsString mBody;
const nsString mTag;
const nsString mIcon;
const nsString mData;
const nsString mBehavior;
const nsString mScope;
public:
SendNotificationEventRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aKeepAliveToken,
const nsAString& aEventName,
const nsAString& aID,
const nsAString& aTitle,
const nsAString& aDir,
const nsAString& aLang,
const nsAString& aBody,
const nsAString& aTag,
const nsAString& aIcon,
const nsAString& aData,
const nsAString& aBehavior,
const nsAString& aScope)
: ExtendableEventWorkerRunnable(aWorkerPrivate, aKeepAliveToken)
, mEventName(aEventName)
, mID(aID)
, mTitle(aTitle)
, mDir(aDir)
, mLang(aLang)
, mBody(aBody)
, mTag(aTag)
, mIcon(aIcon)
, mData(aData)
, mBehavior(aBehavior)
, mScope(aScope)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aWorkerPrivate->IsServiceWorker());
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
MOZ_ASSERT(aWorkerPrivate);
RefPtr<EventTarget> target = do_QueryObject(aWorkerPrivate->GlobalScope());
ErrorResult result;
RefPtr<Notification> notification =
Notification::ConstructFromFields(aWorkerPrivate->GlobalScope(), mID,
mTitle, mDir, mLang, mBody, mTag, mIcon,
mData, mScope, result);
if (NS_WARN_IF(result.Failed())) {
return false;
}
NotificationEventInit nei;
nei.mNotification = notification;
nei.mBubbles = false;
nei.mCancelable = false;
RefPtr<NotificationEvent> event =
NotificationEvent::Constructor(target, mEventName,
nei, result);
if (NS_WARN_IF(result.Failed())) {
return false;
}
event->SetTrusted(true);
RefPtr<AllowWindowInteractionHandler> allowWindowInteraction;
if (mEventName.EqualsLiteral(NOTIFICATION_CLICK_EVENT_NAME)) {
allowWindowInteraction =
new AllowWindowInteractionHandler(aWorkerPrivate);
}
nsresult rv = DispatchExtendableEventOnWorkerScope(aCx,
aWorkerPrivate->GlobalScope(),
event,
allowWindowInteraction);
// Don't reject when catching an exception
if (NS_FAILED(rv) && rv != NS_ERROR_XPC_JS_THREW_EXCEPTION &&
allowWindowInteraction) {
allowWindowInteraction->FinishedWithResult(Rejected);
}
return true;
}
};
} // namespace anonymous
nsresult
ServiceWorkerPrivate::SendNotificationEvent(const nsAString& aEventName,
const nsAString& aID,
const nsAString& aTitle,
const nsAString& aDir,
const nsAString& aLang,
const nsAString& aBody,
const nsAString& aTag,
const nsAString& aIcon,
const nsAString& aData,
const nsAString& aBehavior,
const nsAString& aScope)
{
WakeUpReason why;
if (aEventName.EqualsLiteral(NOTIFICATION_CLICK_EVENT_NAME)) {
why = NotificationClickEvent;
gDOMDisableOpenClickDelay =
Preferences::GetInt("dom.serviceWorkers.disable_open_click_delay");
} else if (aEventName.EqualsLiteral(NOTIFICATION_CLOSE_EVENT_NAME)) {
why = NotificationCloseEvent;
} else {
MOZ_ASSERT_UNREACHABLE("Invalid notification event name");
return NS_ERROR_FAILURE;
}
nsresult rv = SpawnWorkerIfNeeded(why, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
RefPtr<WorkerRunnable> r =
new SendNotificationEventRunnable(mWorkerPrivate, token,
aEventName, aID, aTitle, aDir, aLang,
aBody, aTag, aIcon, aData, aBehavior,
aScope);
if (NS_WARN_IF(!r->Dispatch())) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
namespace {
// Inheriting ExtendableEventWorkerRunnable so that the worker is not terminated
// while handling the fetch event, though that's very unlikely.
class FetchEventRunnable : public ExtendableFunctionalEventWorkerRunnable
, public nsIHttpHeaderVisitor {
nsMainThreadPtrHandle<nsIInterceptedChannel> mInterceptedChannel;
const nsCString mScriptSpec;
nsTArray<nsCString> mHeaderNames;
nsTArray<nsCString> mHeaderValues;
nsCString mSpec;
nsCString mFragment;
nsCString mMethod;
nsString mClientId;
bool mIsReload;
bool mMarkLaunchServiceWorkerEnd;
RequestCache mCacheMode;
RequestMode mRequestMode;
RequestRedirect mRequestRedirect;
RequestCredentials mRequestCredentials;
nsContentPolicyType mContentPolicyType;
nsCOMPtr<nsIInputStream> mUploadStream;
int64_t mUploadStreamContentLength;
nsCString mReferrer;
ReferrerPolicy mReferrerPolicy;
nsString mIntegrity;
public:
FetchEventRunnable(WorkerPrivate* aWorkerPrivate,
KeepAliveToken* aKeepAliveToken,
nsMainThreadPtrHandle<nsIInterceptedChannel>& aChannel,
// CSP checks might require the worker script spec
// later on.
const nsACString& aScriptSpec,
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo>& aRegistration,
const nsAString& aClientId,
bool aIsReload,
bool aMarkLaunchServiceWorkerEnd)
: ExtendableFunctionalEventWorkerRunnable(
aWorkerPrivate, aKeepAliveToken, aRegistration)
, mInterceptedChannel(aChannel)
, mScriptSpec(aScriptSpec)
, mClientId(aClientId)
, mIsReload(aIsReload)
, mMarkLaunchServiceWorkerEnd(aMarkLaunchServiceWorkerEnd)
, mCacheMode(RequestCache::Default)
, mRequestMode(RequestMode::No_cors)
, mRequestRedirect(RequestRedirect::Follow)
// By default we set it to same-origin since normal HTTP fetches always
// send credentials to same-origin websites unless explicitly forbidden.
, mRequestCredentials(RequestCredentials::Same_origin)
, mContentPolicyType(nsIContentPolicy::TYPE_INVALID)
, mUploadStreamContentLength(-1)
, mReferrer(kFETCH_CLIENT_REFERRER_STR)
, mReferrerPolicy(ReferrerPolicy::_empty)
{
MOZ_ASSERT(aWorkerPrivate);
}
NS_DECL_ISUPPORTS_INHERITED
NS_IMETHOD
VisitHeader(const nsACString& aHeader, const nsACString& aValue) override
{
mHeaderNames.AppendElement(aHeader);
mHeaderValues.AppendElement(aValue);
return NS_OK;
}
nsresult
Init()
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIChannel> channel;
nsresult rv = mInterceptedChannel->GetChannel(getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> uri;
rv = mInterceptedChannel->GetSecureUpgradedChannelURI(getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
// Normally we rely on the Request constructor to strip the fragment, but
// when creating the FetchEvent we bypass the constructor. So strip the
// fragment manually here instead. We can't do it later when we create
// the Request because that code executes off the main thread.
nsCOMPtr<nsIURI> uriNoFragment;
rv = uri->CloneIgnoringRef(getter_AddRefs(uriNoFragment));
NS_ENSURE_SUCCESS(rv, rv);
rv = uriNoFragment->GetSpec(mSpec);
NS_ENSURE_SUCCESS(rv, rv);
rv = uri->GetRef(mFragment);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t loadFlags;
rv = channel->GetLoadFlags(&loadFlags);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsILoadInfo> loadInfo;
rv = channel->GetLoadInfo(getter_AddRefs(loadInfo));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_STATE(loadInfo);
mContentPolicyType = loadInfo->InternalContentPolicyType();
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(channel);
MOZ_ASSERT(httpChannel, "How come we don't have an HTTP channel?");
nsAutoCString referrer;
// Ignore the return value since the Referer header may not exist.
Unused << httpChannel->GetRequestHeader(NS_LITERAL_CSTRING("Referer"),
referrer);
if (!referrer.IsEmpty()) {
mReferrer = referrer;
} else {
// If there's no referrer Header, means the header was omitted for
// security/privacy reason.
mReferrer = EmptyCString();
}
uint32_t referrerPolicy = 0;
rv = httpChannel->GetReferrerPolicy(&referrerPolicy);
NS_ENSURE_SUCCESS(rv, rv);
switch (referrerPolicy) {
case nsIHttpChannel::REFERRER_POLICY_UNSET:
mReferrerPolicy = ReferrerPolicy::_empty;
break;
case nsIHttpChannel::REFERRER_POLICY_NO_REFERRER:
mReferrerPolicy = ReferrerPolicy::No_referrer;
break;
case nsIHttpChannel::REFERRER_POLICY_ORIGIN:
mReferrerPolicy = ReferrerPolicy::Origin;
break;
case nsIHttpChannel::REFERRER_POLICY_NO_REFERRER_WHEN_DOWNGRADE:
mReferrerPolicy = ReferrerPolicy::No_referrer_when_downgrade;
break;
case nsIHttpChannel::REFERRER_POLICY_ORIGIN_WHEN_XORIGIN:
mReferrerPolicy = ReferrerPolicy::Origin_when_cross_origin;
break;
case nsIHttpChannel::REFERRER_POLICY_UNSAFE_URL:
mReferrerPolicy = ReferrerPolicy::Unsafe_url;
break;
case nsIHttpChannel::REFERRER_POLICY_SAME_ORIGIN:
mReferrerPolicy = ReferrerPolicy::Same_origin;
break;
case nsIHttpChannel::REFERRER_POLICY_STRICT_ORIGIN_WHEN_XORIGIN:
mReferrerPolicy = ReferrerPolicy::Strict_origin_when_cross_origin;
break;
case nsIHttpChannel::REFERRER_POLICY_STRICT_ORIGIN:
mReferrerPolicy = ReferrerPolicy::Strict_origin;
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid Referrer Policy enum value?");
break;
}
rv = httpChannel->GetRequestMethod(mMethod);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIHttpChannelInternal> internalChannel = do_QueryInterface(httpChannel);
NS_ENSURE_TRUE(internalChannel, NS_ERROR_NOT_AVAILABLE);
mRequestMode = InternalRequest::MapChannelToRequestMode(channel);
// This is safe due to static_asserts in ServiceWorkerManager.cpp.
uint32_t redirectMode;
rv = internalChannel->GetRedirectMode(&redirectMode);
MOZ_ASSERT(NS_SUCCEEDED(rv));
mRequestRedirect = static_cast<RequestRedirect>(redirectMode);
// This is safe due to static_asserts in ServiceWorkerManager.cpp.
uint32_t cacheMode;
rv = internalChannel->GetFetchCacheMode(&cacheMode);
MOZ_ASSERT(NS_SUCCEEDED(rv));
mCacheMode = static_cast<RequestCache>(cacheMode);
rv = internalChannel->GetIntegrityMetadata(mIntegrity);
MOZ_ASSERT(NS_SUCCEEDED(rv));
mRequestCredentials = InternalRequest::MapChannelToRequestCredentials(channel);
rv = httpChannel->VisitNonDefaultRequestHeaders(this);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIUploadChannel2> uploadChannel = do_QueryInterface(httpChannel);
if (uploadChannel) {
MOZ_ASSERT(!mUploadStream);
nsCOMPtr<nsIInputStream> uploadStream;
rv = uploadChannel->CloneUploadStream(&mUploadStreamContentLength,
getter_AddRefs(uploadStream));
NS_ENSURE_SUCCESS(rv, rv);
mUploadStream = uploadStream;
}
return NS_OK;
}
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
MOZ_ASSERT(aWorkerPrivate);
if (mMarkLaunchServiceWorkerEnd) {
mInterceptedChannel->SetLaunchServiceWorkerEnd(TimeStamp::Now());
// A probe to measure sw launch time for telemetry.
TimeStamp launchStartTime = TimeStamp();
mInterceptedChannel->GetLaunchServiceWorkerStart(&launchStartTime);
TimeStamp launchEndTime = TimeStamp();
mInterceptedChannel->GetLaunchServiceWorkerEnd(&launchEndTime);
Telemetry::AccumulateTimeDelta(Telemetry::SERVICE_WORKER_LAUNCH_TIME,
launchStartTime, launchEndTime);
}
mInterceptedChannel->SetDispatchFetchEventEnd(TimeStamp::Now());
return DispatchFetchEvent(aCx, aWorkerPrivate);
}
nsresult
Cancel() override
{
nsCOMPtr<nsIRunnable> runnable = new ResumeRequest(mInterceptedChannel);
if (NS_FAILED(mWorkerPrivate->DispatchToMainThread(runnable))) {
NS_WARNING("Failed to resume channel on FetchEventRunnable::Cancel()!\n");
}
WorkerRunnable::Cancel();
return NS_OK;
}
private:
~FetchEventRunnable() {}
class ResumeRequest final : public Runnable {
nsMainThreadPtrHandle<nsIInterceptedChannel> mChannel;
public:
explicit ResumeRequest(
nsMainThreadPtrHandle<nsIInterceptedChannel>& aChannel)
: Runnable("dom::FetchEventRunnable::ResumeRequest")
, mChannel(aChannel)
{
mChannel->SetFinishResponseStart(TimeStamp::Now());
}
NS_IMETHOD Run() override
{
MOZ_ASSERT(NS_IsMainThread());
TimeStamp timeStamp = TimeStamp::Now();
mChannel->SetHandleFetchEventEnd(timeStamp);
mChannel->SetChannelResetEnd(timeStamp);
mChannel->SaveTimeStamps();
nsresult rv = mChannel->ResetInterception();
if (NS_FAILED(rv)) {
NS_WARNING("Failed to resume intercepted network request");
mChannel->CancelInterception(rv);
}
return rv;
}
};
bool
DispatchFetchEvent(JSContext* aCx, WorkerPrivate* aWorkerPrivate)
{
MOZ_ASSERT(aCx);
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aWorkerPrivate->IsServiceWorker());
GlobalObject globalObj(aCx, aWorkerPrivate->GlobalScope()->GetWrapper());
RefPtr<InternalHeaders> internalHeaders = new InternalHeaders(HeadersGuardEnum::Request);
MOZ_ASSERT(mHeaderNames.Length() == mHeaderValues.Length());
for (uint32_t i = 0; i < mHeaderNames.Length(); i++) {
ErrorResult result;
internalHeaders->Set(mHeaderNames[i], mHeaderValues[i], result);
if (NS_WARN_IF(result.Failed())) {
result.SuppressException();
return false;
}
}
ErrorResult result;
internalHeaders->SetGuard(HeadersGuardEnum::Immutable, result);
if (NS_WARN_IF(result.Failed())) {
result.SuppressException();
return false;
}
RefPtr<InternalRequest> internalReq = new InternalRequest(mSpec,
mFragment,
mMethod,
internalHeaders.forget(),
mCacheMode,
mRequestMode,
mRequestRedirect,
mRequestCredentials,
NS_ConvertUTF8toUTF16(mReferrer),
mReferrerPolicy,
mContentPolicyType,
mIntegrity);
internalReq->SetBody(mUploadStream, mUploadStreamContentLength);
// For Telemetry, note that this Request object was created by a Fetch event.
internalReq->SetCreatedByFetchEvent();
nsCOMPtr<nsIChannel> channel;
nsresult rv = mInterceptedChannel->GetChannel(getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, false);
nsAutoCString alternativeDataType;
nsCOMPtr<nsICacheInfoChannel> cic = do_QueryInterface(channel);
if (cic &&
NS_SUCCEEDED(cic->GetPreferredAlternativeDataType(alternativeDataType)) &&
!alternativeDataType.IsEmpty()) {
internalReq->SetPreferredAlternativeDataType(alternativeDataType);
}
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(globalObj.GetAsSupports());
if (NS_WARN_IF(!global)) {
return false;
}
// TODO This request object should be created with a AbortSignal object
// which should be aborted if the loading is aborted. See bug 1394102.
RefPtr<Request> request = new Request(global, internalReq, nullptr);
MOZ_ASSERT_IF(internalReq->IsNavigationRequest(),
request->Redirect() == RequestRedirect::Manual);
RootedDictionary<FetchEventInit> init(aCx);
init.mRequest = request;
init.mBubbles = false;
init.mCancelable = true;
// Only expose the FetchEvent.clientId on subresource requests for now.
// Once we implement .resultingClientId and .targetClientId we can then
// start exposing .clientId on non-subresource requests as well. See
// bug 1264177.
if (!mClientId.IsEmpty() && !internalReq->IsNavigationRequest()) {
init.mClientId = mClientId;
}
init.mIsReload = mIsReload;
RefPtr<FetchEvent> event =
FetchEvent::Constructor(globalObj, NS_LITERAL_STRING("fetch"), init, result);
if (NS_WARN_IF(result.Failed())) {
result.SuppressException();
return false;
}
event->PostInit(mInterceptedChannel, mRegistration, mScriptSpec);
event->SetTrusted(true);
mInterceptedChannel->SetHandleFetchEventStart(TimeStamp::Now());
nsresult rv2 =
DispatchExtendableEventOnWorkerScope(aCx, aWorkerPrivate->GlobalScope(),
event, nullptr);
if ((NS_WARN_IF(NS_FAILED(rv2)) && rv2 != NS_ERROR_XPC_JS_THREW_EXCEPTION) ||
!event->WaitToRespond()) {
nsCOMPtr<nsIRunnable> runnable;
MOZ_ASSERT(!aWorkerPrivate->UsesSystemPrincipal(),
"We don't support system-principal serviceworkers");
if (event->DefaultPrevented(CallerType::NonSystem)) {
runnable = new CancelChannelRunnable(mInterceptedChannel,
mRegistration,
NS_ERROR_INTERCEPTION_FAILED);
} else {
runnable = new ResumeRequest(mInterceptedChannel);
}
MOZ_ALWAYS_SUCCEEDS(mWorkerPrivate->DispatchToMainThread(runnable.forget()));
}
return true;
}
};
NS_IMPL_ISUPPORTS_INHERITED(FetchEventRunnable, WorkerRunnable, nsIHttpHeaderVisitor)
} // anonymous namespace
nsresult
ServiceWorkerPrivate::SendFetchEvent(nsIInterceptedChannel* aChannel,
nsILoadGroup* aLoadGroup,
const nsAString& aClientId, bool aIsReload)
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (NS_WARN_IF(!mInfo || !swm)) {
return NS_ERROR_FAILURE;
}
RefPtr<ServiceWorkerRegistrationInfo> registration =
swm->GetRegistration(mInfo->Principal(), mInfo->Scope());
// Its possible the registration is removed between starting the interception
// and actually dispatching the fetch event. In these cases we simply
// want to restart the original network request. Since this is a normal
// condition we handle the reset here instead of returning an error which
// would in turn trigger a console report.
if (!registration) {
nsresult rv = aChannel->ResetInterception();
if (NS_FAILED(rv)) {
NS_WARNING("Failed to resume intercepted network request");
aChannel->CancelInterception(rv);
}
return NS_OK;
}
// Handle Fetch algorithm - step 16. If the service worker didn't register
// any fetch event handlers, then abort the interception and maybe trigger
// the soft update algorithm.
if (!mInfo->HandlesFetch()) {
nsresult rv = aChannel->ResetInterception();
if (NS_FAILED(rv)) {
NS_WARNING("Failed to resume intercepted network request");
aChannel->CancelInterception(rv);
}
// Trigger soft updates if necessary.
registration->MaybeScheduleTimeCheckAndUpdate();
return NS_OK;
}
// if the ServiceWorker script fails to load for some reason, just resume
// the original channel.
nsCOMPtr<nsIRunnable> failRunnable =
NewRunnableMethod("nsIInterceptedChannel::ResetInterception",
aChannel,
&nsIInterceptedChannel::ResetInterception);
aChannel->SetLaunchServiceWorkerStart(TimeStamp::Now());
aChannel->SetDispatchFetchEventStart(TimeStamp::Now());
bool newWorkerCreated = false;
nsresult rv = SpawnWorkerIfNeeded(FetchEvent,
failRunnable,
&newWorkerCreated,
aLoadGroup);
NS_ENSURE_SUCCESS(rv, rv);
if (!newWorkerCreated) {
aChannel->SetLaunchServiceWorkerEnd(TimeStamp::Now());
}
nsMainThreadPtrHandle<nsIInterceptedChannel> handle(
new nsMainThreadPtrHolder<nsIInterceptedChannel>(
"nsIInterceptedChannel", aChannel, false));
nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo> regInfo(
new nsMainThreadPtrHolder<ServiceWorkerRegistrationInfo>(
"ServiceWorkerRegistrationInfoProxy", registration, false));
RefPtr<KeepAliveToken> token = CreateEventKeepAliveToken();
RefPtr<FetchEventRunnable> r =
new FetchEventRunnable(mWorkerPrivate, token, handle,
mInfo->ScriptSpec(), regInfo,
aClientId, aIsReload, newWorkerCreated);
rv = r->Init();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (mInfo->State() == ServiceWorkerState::Activating) {
mPendingFunctionalEvents.AppendElement(r.forget());
return NS_OK;
}
MOZ_ASSERT(mInfo->State() == ServiceWorkerState::Activated);
if (NS_WARN_IF(!r->Dispatch())) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult
ServiceWorkerPrivate::SpawnWorkerIfNeeded(WakeUpReason aWhy,
nsIRunnable* aLoadFailedRunnable,
bool* aNewWorkerCreated,
nsILoadGroup* aLoadGroup)
{
MOZ_ASSERT(NS_IsMainThread());
// Defaults to no new worker created, but if there is one, we'll set the value
// to true at the end of this function.
if (aNewWorkerCreated) {
*aNewWorkerCreated = false;
}
if (mWorkerPrivate) {
// If we have a load group here then use it to update the service worker
// load group. This was added when we needed the load group's tab child
// to pass some security checks. Those security checks are gone, though,
// and we could possibly remove this now. For now we just do it
// opportunistically. When the service worker is running in a separate
// process from the client that initiated the intercepted channel, then
// the load group will be nullptr. UpdateOverrideLoadGroup ignores nullptr
// load groups.
mWorkerPrivate->UpdateOverridenLoadGroup(aLoadGroup);
RenewKeepAliveToken(aWhy);
return NS_OK;
}
// Sanity check: mSupportsArray should be empty if we're about to
// spin up a new worker.
MOZ_ASSERT(mSupportsArray.IsEmpty());
if (NS_WARN_IF(!mInfo)) {
NS_WARNING("Trying to wake up a dead service worker.");
return NS_ERROR_FAILURE;
}
// TODO(catalinb): Bug 1192138 - Add telemetry for service worker wake-ups.
// Ensure that the IndexedDatabaseManager is initialized
Unused << NS_WARN_IF(!IndexedDatabaseManager::GetOrCreate());
WorkerLoadInfo info;
nsresult rv = NS_NewURI(getter_AddRefs(info.mBaseURI), mInfo->ScriptSpec(),
nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
info.mResolvedScriptURI = info.mBaseURI;
MOZ_ASSERT(!mInfo->CacheName().IsEmpty());
info.mServiceWorkerCacheName = mInfo->CacheName();
PrincipalInfo principalInfo;
rv = PrincipalToPrincipalInfo(mInfo->Principal(), &principalInfo);
NS_ENSURE_SUCCESS(rv, rv);
info.mServiceWorkerDescriptor.emplace(ServiceWorkerDescriptor(mInfo->ID(),
principalInfo,
mInfo->Scope(),
mInfo->State()));
info.mLoadGroup = aLoadGroup;
info.mLoadFailedAsyncRunnable = aLoadFailedRunnable;
// If we are loading a script for a ServiceWorker then we must not
// try to intercept it. If the interception matches the current
// ServiceWorker's scope then we could deadlock the load.
info.mLoadFlags = mInfo->GetImportsLoadFlags() |
nsIChannel::LOAD_BYPASS_SERVICE_WORKER;
rv = info.mBaseURI->GetHost(info.mDomain);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsCOMPtr<nsIURI> uri;
rv = mInfo->Principal()->GetURI(getter_AddRefs(uri));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (NS_WARN_IF(!uri)) {
return NS_ERROR_FAILURE;
}
// Create a pristine codebase principal to avoid any possibility of inheriting
// CSP values. The principal on the registration may be polluted with CSP
// from the registering page or other places the principal is passed. If
// bug 965637 is ever fixed this can be removed.
info.mPrincipal =
BasePrincipal::CreateCodebasePrincipal(uri, mInfo->GetOriginAttributes());
if (NS_WARN_IF(!info.mPrincipal)) {
return NS_ERROR_FAILURE;
}
info.mLoadingPrincipal = info.mPrincipal;
nsContentUtils::StorageAccess access =
nsContentUtils::StorageAllowedForPrincipal(info.mPrincipal);
info.mStorageAllowed = access > nsContentUtils::StorageAccess::ePrivateBrowsing;
info.mOriginAttributes = mInfo->GetOriginAttributes();
// Verify that we don't have any CSP on pristine principal.
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
nsCOMPtr<nsIContentSecurityPolicy> csp;
Unused << info.mPrincipal->GetCsp(getter_AddRefs(csp));
MOZ_DIAGNOSTIC_ASSERT(!csp);
#endif
// Default CSP permissions for now. These will be overrided if necessary
// based on the script CSP headers during load in ScriptLoader.
info.mEvalAllowed = true;
info.mReportCSPViolations = false;
WorkerPrivate::OverrideLoadInfoLoadGroup(info, info.mPrincipal);
rv = info.SetPrincipalOnMainThread(info.mPrincipal, info.mLoadGroup);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
AutoJSAPI jsapi;
jsapi.Init();
ErrorResult error;
NS_ConvertUTF8toUTF16 scriptSpec(mInfo->ScriptSpec());
mWorkerPrivate = WorkerPrivate::Constructor(jsapi.cx(),
scriptSpec,
false, WorkerTypeService,
VoidString(),
EmptyCString(),
&info, error);
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
RenewKeepAliveToken(aWhy);
if (aNewWorkerCreated) {
*aNewWorkerCreated = true;
}
return NS_OK;
}
void
ServiceWorkerPrivate::StoreISupports(nsISupports* aSupports)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mWorkerPrivate);
MOZ_ASSERT(!mSupportsArray.Contains(aSupports));
mSupportsArray.AppendElement(aSupports);
}
void
ServiceWorkerPrivate::RemoveISupports(nsISupports* aSupports)
{
MOZ_ASSERT(NS_IsMainThread());
mSupportsArray.RemoveElement(aSupports);
}
void
ServiceWorkerPrivate::TerminateWorker()
{
MOZ_ASSERT(NS_IsMainThread());
mIdleWorkerTimer->Cancel();
mIdleKeepAliveToken = nullptr;
if (mWorkerPrivate) {
if (DOMPrefs::ServiceWorkersTestingEnabled()) {
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os) {
os->NotifyObservers(nullptr, "service-worker-shutdown", nullptr);
}
}
Unused << NS_WARN_IF(!mWorkerPrivate->Terminate());
mWorkerPrivate = nullptr;
mSupportsArray.Clear();
// Any pending events are never going to fire on this worker. Cancel
// them so that intercepted channels can be reset and other resources
// cleaned up.
nsTArray<RefPtr<WorkerRunnable>> pendingEvents;
mPendingFunctionalEvents.SwapElements(pendingEvents);
for (uint32_t i = 0; i < pendingEvents.Length(); ++i) {
pendingEvents[i]->Cancel();
}
}
}
void
ServiceWorkerPrivate::NoteDeadServiceWorkerInfo()
{
MOZ_ASSERT(NS_IsMainThread());
mInfo = nullptr;
TerminateWorker();
}
namespace {
class UpdateStateControlRunnable final : public MainThreadWorkerControlRunnable
{
const ServiceWorkerState mState;
bool
WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
{
MOZ_DIAGNOSTIC_ASSERT(aWorkerPrivate);
aWorkerPrivate->UpdateServiceWorkerState(mState);
return true;
}
public:
UpdateStateControlRunnable(WorkerPrivate* aWorkerPrivate,
ServiceWorkerState aState)
: MainThreadWorkerControlRunnable(aWorkerPrivate)
, mState(aState)
{
}
};
} // anonymous namespace
void
ServiceWorkerPrivate::UpdateState(ServiceWorkerState aState)
{
MOZ_ASSERT(NS_IsMainThread());
if (!mWorkerPrivate) {
MOZ_DIAGNOSTIC_ASSERT(mPendingFunctionalEvents.IsEmpty());
return;
}
RefPtr<WorkerRunnable> r =
new UpdateStateControlRunnable(mWorkerPrivate, aState);
Unused << r->Dispatch();
if (aState != ServiceWorkerState::Activated) {
return;
}
nsTArray<RefPtr<WorkerRunnable>> pendingEvents;
mPendingFunctionalEvents.SwapElements(pendingEvents);
for (uint32_t i = 0; i < pendingEvents.Length(); ++i) {
RefPtr<WorkerRunnable> r = pendingEvents[i].forget();
if (NS_WARN_IF(!r->Dispatch())) {
NS_WARNING("Failed to dispatch pending functional event!");
}
}
}
nsresult
ServiceWorkerPrivate::GetDebugger(nsIWorkerDebugger** aResult)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aResult);
if (!mDebuggerCount) {
return NS_OK;
}
MOZ_ASSERT(mWorkerPrivate);
nsCOMPtr<nsIWorkerDebugger> debugger = do_QueryInterface(mWorkerPrivate->Debugger());
debugger.forget(aResult);
return NS_OK;
}
nsresult
ServiceWorkerPrivate::AttachDebugger()
{
MOZ_ASSERT(NS_IsMainThread());
// When the first debugger attaches to a worker, we spawn a worker if needed,
// and cancel the idle timeout. The idle timeout should not be reset until
// the last debugger detached from the worker.
if (!mDebuggerCount) {
nsresult rv = SpawnWorkerIfNeeded(AttachEvent, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
mIdleWorkerTimer->Cancel();
}
++mDebuggerCount;
return NS_OK;
}
nsresult
ServiceWorkerPrivate::DetachDebugger()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mDebuggerCount) {
return NS_ERROR_UNEXPECTED;
}
--mDebuggerCount;
// When the last debugger detaches from a worker, we either reset the idle
// timeout, or terminate the worker if there are no more active tokens.
if (!mDebuggerCount) {
if (mTokenCount) {
ResetIdleTimeout();
} else {
TerminateWorker();
}
}
return NS_OK;
}
bool
ServiceWorkerPrivate::IsIdle() const
{
MOZ_ASSERT(NS_IsMainThread());
return mTokenCount == 0 || (mTokenCount == 1 && mIdleKeepAliveToken);
}
namespace {
class ServiceWorkerPrivateTimerCallback final : public nsITimerCallback
, public nsINamed
{
public:
typedef void (ServiceWorkerPrivate::*Method)(nsITimer*);
ServiceWorkerPrivateTimerCallback(ServiceWorkerPrivate* aServiceWorkerPrivate,
Method aMethod)
: mServiceWorkerPrivate(aServiceWorkerPrivate)
, mMethod(aMethod)
{
}
NS_IMETHOD
Notify(nsITimer* aTimer) override
{
(mServiceWorkerPrivate->*mMethod)(aTimer);
mServiceWorkerPrivate = nullptr;
return NS_OK;
}
NS_IMETHOD
GetName(nsACString& aName) override
{
aName.AssignLiteral("ServiceWorkerPrivateTimerCallback");
return NS_OK;
}
private:
~ServiceWorkerPrivateTimerCallback() = default;
RefPtr<ServiceWorkerPrivate> mServiceWorkerPrivate;
Method mMethod;
NS_DECL_THREADSAFE_ISUPPORTS
};
NS_IMPL_ISUPPORTS(ServiceWorkerPrivateTimerCallback, nsITimerCallback, nsINamed);
} // anonymous namespace
void
ServiceWorkerPrivate::NoteIdleWorkerCallback(nsITimer* aTimer)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aTimer == mIdleWorkerTimer, "Invalid timer!");
// Release ServiceWorkerPrivate's token, since the grace period has ended.
mIdleKeepAliveToken = nullptr;
if (mWorkerPrivate) {
// If we still have a workerPrivate at this point it means there are pending
// waitUntil promises. Wait a bit more until we forcibly terminate the
// worker.
uint32_t timeout = Preferences::GetInt("dom.serviceWorkers.idle_extended_timeout");
nsCOMPtr<nsITimerCallback> cb = new ServiceWorkerPrivateTimerCallback(
this, &ServiceWorkerPrivate::TerminateWorkerCallback);
DebugOnly<nsresult> rv =
mIdleWorkerTimer->InitWithCallback(cb, timeout, nsITimer::TYPE_ONE_SHOT);
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
}
void
ServiceWorkerPrivate::TerminateWorkerCallback(nsITimer* aTimer)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aTimer == this->mIdleWorkerTimer, "Invalid timer!");
// mInfo must be non-null at this point because NoteDeadServiceWorkerInfo
// which zeroes it calls TerminateWorker which cancels our timer which will
// ensure we don't get invoked even if the nsTimerEvent is in the event queue.
ServiceWorkerManager::LocalizeAndReportToAllClients(
mInfo->Scope(),
"ServiceWorkerGraceTimeoutTermination",
nsTArray<nsString> { NS_ConvertUTF8toUTF16(mInfo->Scope()) });
TerminateWorker();
}
void
ServiceWorkerPrivate::RenewKeepAliveToken(WakeUpReason aWhy)
{
// We should have an active worker if we're renewing the keep alive token.
MOZ_ASSERT(mWorkerPrivate);
// If there is at least one debugger attached to the worker, the idle worker
// timeout was canceled when the first debugger attached to the worker. It
// should not be reset until the last debugger detaches from the worker.
if (!mDebuggerCount) {
ResetIdleTimeout();
}
if (!mIdleKeepAliveToken) {
mIdleKeepAliveToken = new KeepAliveToken(this);
}
}
void
ServiceWorkerPrivate::ResetIdleTimeout()
{
uint32_t timeout = Preferences::GetInt("dom.serviceWorkers.idle_timeout");
nsCOMPtr<nsITimerCallback> cb = new ServiceWorkerPrivateTimerCallback(
this, &ServiceWorkerPrivate::NoteIdleWorkerCallback);
DebugOnly<nsresult> rv =
mIdleWorkerTimer->InitWithCallback(cb, timeout, nsITimer::TYPE_ONE_SHOT);
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
void
ServiceWorkerPrivate::AddToken()
{
MOZ_ASSERT(NS_IsMainThread());
++mTokenCount;
}
void
ServiceWorkerPrivate::ReleaseToken()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mTokenCount > 0);
--mTokenCount;
if (!mTokenCount) {
TerminateWorker();
}
// mInfo can be nullptr here if NoteDeadServiceWorkerInfo() is called while
// the KeepAliveToken is being proxy released as a runnable.
else if (mInfo && IsIdle()) {
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
if (swm) {
swm->WorkerIsIdle(mInfo);
}
}
}
already_AddRefed<KeepAliveToken>
ServiceWorkerPrivate::CreateEventKeepAliveToken()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mWorkerPrivate);
MOZ_ASSERT(mIdleKeepAliveToken);
RefPtr<KeepAliveToken> ref = new KeepAliveToken(this);
return ref.forget();
}
void
ServiceWorkerPrivate::SetHandlesFetch(bool aValue)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!mInfo)) {
return;
}
mInfo->SetHandlesFetch(aValue);
}
} // namespace dom
} // namespace mozilla
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