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-rw-r--r--dom/workers/sharedworkers/SharedWorkerService.cpp263
1 files changed, 263 insertions, 0 deletions
diff --git a/dom/workers/sharedworkers/SharedWorkerService.cpp b/dom/workers/sharedworkers/SharedWorkerService.cpp
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+++ b/dom/workers/sharedworkers/SharedWorkerService.cpp
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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 "SharedWorkerService.h"
+#include "mozilla/dom/MessagePort.h"
+#include "mozilla/dom/RemoteWorkerTypes.h"
+#include "mozilla/dom/SharedWorkerManager.h"
+#include "mozilla/ipc/BackgroundParent.h"
+#include "mozilla/ipc/URIUtils.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/SchedulerGroup.h"
+#include "mozilla/StaticMutex.h"
+#include "nsIPrincipal.h"
+#include "nsProxyRelease.h"
+
+namespace mozilla {
+
+using namespace ipc;
+
+namespace dom {
+
+namespace {
+
+StaticMutex sSharedWorkerMutex;
+
+StaticRefPtr<SharedWorkerService> sSharedWorkerService;
+
+class GetOrCreateWorkerManagerRunnable final : public Runnable {
+ public:
+ GetOrCreateWorkerManagerRunnable(SharedWorkerService* aService,
+ SharedWorkerParent* aActor,
+ const RemoteWorkerData& aData,
+ uint64_t aWindowID,
+ const MessagePortIdentifier& aPortIdentifier)
+ : Runnable("GetOrCreateWorkerManagerRunnable"),
+ mBackgroundEventTarget(GetCurrentSerialEventTarget()),
+ mService(aService),
+ mActor(aActor),
+ mData(aData),
+ mWindowID(aWindowID),
+ mPortIdentifier(aPortIdentifier) {}
+
+ NS_IMETHOD
+ Run() {
+ mService->GetOrCreateWorkerManagerOnMainThread(
+ mBackgroundEventTarget, mActor, mData, mWindowID, mPortIdentifier);
+
+ return NS_OK;
+ }
+
+ private:
+ nsCOMPtr<nsIEventTarget> mBackgroundEventTarget;
+ RefPtr<SharedWorkerService> mService;
+ RefPtr<SharedWorkerParent> mActor;
+ RemoteWorkerData mData;
+ uint64_t mWindowID;
+ UniqueMessagePortId mPortIdentifier;
+};
+
+class WorkerManagerCreatedRunnable final : public Runnable {
+ public:
+ WorkerManagerCreatedRunnable(
+ already_AddRefed<SharedWorkerManagerWrapper> aManagerWrapper,
+ SharedWorkerParent* aActor, const RemoteWorkerData& aData,
+ uint64_t aWindowID, UniqueMessagePortId& aPortIdentifier)
+ : Runnable("WorkerManagerCreatedRunnable"),
+ mManagerWrapper(aManagerWrapper),
+ mActor(aActor),
+ mData(aData),
+ mWindowID(aWindowID),
+ mPortIdentifier(std::move(aPortIdentifier)) {}
+
+ NS_IMETHOD
+ Run() {
+ AssertIsOnBackgroundThread();
+
+ if (NS_WARN_IF(
+ !mActor->CanSend() ||
+ !mManagerWrapper->Manager()->MaybeCreateRemoteWorker(
+ mData, mWindowID, mPortIdentifier, mActor->OtherPid()))) {
+ // If we cannot send, the error won't arrive, but we may log something.
+ mActor->ErrorPropagation(NS_ERROR_FAILURE);
+ return NS_OK;
+ }
+
+ mManagerWrapper->Manager()->AddActor(mActor);
+ mActor->ManagerCreated(mManagerWrapper.forget());
+ return NS_OK;
+ }
+
+ private:
+ RefPtr<SharedWorkerManagerWrapper> mManagerWrapper;
+ RefPtr<SharedWorkerParent> mActor;
+ RemoteWorkerData mData;
+ uint64_t mWindowID;
+ UniqueMessagePortId mPortIdentifier;
+};
+
+class ErrorPropagationRunnable final : public Runnable {
+ public:
+ ErrorPropagationRunnable(SharedWorkerParent* aActor, nsresult aError)
+ : Runnable("ErrorPropagationRunnable"), mActor(aActor), mError(aError) {}
+
+ NS_IMETHOD
+ Run() {
+ AssertIsOnBackgroundThread();
+ mActor->ErrorPropagation(mError);
+ return NS_OK;
+ }
+
+ private:
+ RefPtr<SharedWorkerParent> mActor;
+ nsresult mError;
+};
+
+} // namespace
+
+/* static */
+already_AddRefed<SharedWorkerService> SharedWorkerService::GetOrCreate() {
+ AssertIsOnBackgroundThread();
+
+ StaticMutexAutoLock lock(sSharedWorkerMutex);
+
+ if (!sSharedWorkerService) {
+ sSharedWorkerService = new SharedWorkerService();
+ // ClearOnShutdown can only be called on main thread
+ nsresult rv = SchedulerGroup::Dispatch(
+ TaskCategory::Other,
+ NS_NewRunnableFunction("RegisterSharedWorkerServiceClearOnShutdown",
+ []() {
+ StaticMutexAutoLock lock(sSharedWorkerMutex);
+ MOZ_ASSERT(sSharedWorkerService);
+ ClearOnShutdown(&sSharedWorkerService);
+ }));
+ Unused << NS_WARN_IF(NS_FAILED(rv));
+ }
+
+ RefPtr<SharedWorkerService> instance = sSharedWorkerService;
+ return instance.forget();
+}
+
+/* static */
+SharedWorkerService* SharedWorkerService::Get() {
+ StaticMutexAutoLock lock(sSharedWorkerMutex);
+
+ MOZ_ASSERT(sSharedWorkerService);
+ return sSharedWorkerService;
+}
+
+void SharedWorkerService::GetOrCreateWorkerManager(
+ SharedWorkerParent* aActor, const RemoteWorkerData& aData,
+ uint64_t aWindowID, const MessagePortIdentifier& aPortIdentifier) {
+ AssertIsOnBackgroundThread();
+
+ // The real check happens on main-thread.
+ RefPtr<GetOrCreateWorkerManagerRunnable> r =
+ new GetOrCreateWorkerManagerRunnable(this, aActor, aData, aWindowID,
+ aPortIdentifier);
+
+ nsresult rv = SchedulerGroup::Dispatch(TaskCategory::Other, r.forget());
+ Unused << NS_WARN_IF(NS_FAILED(rv));
+}
+
+void SharedWorkerService::GetOrCreateWorkerManagerOnMainThread(
+ nsIEventTarget* aBackgroundEventTarget, SharedWorkerParent* aActor,
+ const RemoteWorkerData& aData, uint64_t aWindowID,
+ UniqueMessagePortId& aPortIdentifier) {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aBackgroundEventTarget);
+ MOZ_ASSERT(aActor);
+
+ auto partitionedPrincipalOrErr =
+ PrincipalInfoToPrincipal(aData.partitionedPrincipalInfo());
+ if (NS_WARN_IF(partitionedPrincipalOrErr.isErr())) {
+ ErrorPropagationOnMainThread(aBackgroundEventTarget, aActor,
+ partitionedPrincipalOrErr.unwrapErr());
+ return;
+ }
+
+ auto loadingPrincipalOrErr =
+ PrincipalInfoToPrincipal(aData.loadingPrincipalInfo());
+ if (NS_WARN_IF(loadingPrincipalOrErr.isErr())) {
+ ErrorPropagationOnMainThread(aBackgroundEventTarget, aActor,
+ loadingPrincipalOrErr.unwrapErr());
+ return;
+ }
+
+ RefPtr<SharedWorkerManagerHolder> managerHolder;
+
+ nsCOMPtr<nsIPrincipal> loadingPrincipal = loadingPrincipalOrErr.unwrap();
+ nsCOMPtr<nsIPrincipal> partitionedPrincipal =
+ partitionedPrincipalOrErr.unwrap();
+
+ nsCOMPtr<nsIPrincipal> effectiveStoragePrincipal = partitionedPrincipal;
+ if (aData.useRegularPrincipal()) {
+ effectiveStoragePrincipal = loadingPrincipal;
+ }
+
+ // Let's see if there is already a SharedWorker to share.
+ nsCOMPtr<nsIURI> resolvedScriptURL =
+ DeserializeURI(aData.resolvedScriptURL());
+ for (SharedWorkerManager* workerManager : mWorkerManagers) {
+ managerHolder = workerManager->MatchOnMainThread(
+ this, aData.domain(), resolvedScriptURL, aData.name(), loadingPrincipal,
+ BasePrincipal::Cast(effectiveStoragePrincipal)->OriginAttributesRef());
+ if (managerHolder) {
+ break;
+ }
+ }
+
+ // Let's create a new one.
+ if (!managerHolder) {
+ managerHolder = SharedWorkerManager::Create(
+ this, aBackgroundEventTarget, aData, loadingPrincipal,
+ BasePrincipal::Cast(effectiveStoragePrincipal)->OriginAttributesRef());
+
+ mWorkerManagers.AppendElement(managerHolder->Manager());
+ } else {
+ // We are attaching the actor to an existing one.
+ if (managerHolder->Manager()->IsSecureContext() !=
+ aData.isSecureContext()) {
+ ErrorPropagationOnMainThread(aBackgroundEventTarget, aActor,
+ NS_ERROR_DOM_SECURITY_ERR);
+ return;
+ }
+ }
+
+ RefPtr<SharedWorkerManagerWrapper> wrapper =
+ new SharedWorkerManagerWrapper(managerHolder.forget());
+
+ RefPtr<WorkerManagerCreatedRunnable> r = new WorkerManagerCreatedRunnable(
+ wrapper.forget(), aActor, aData, aWindowID, aPortIdentifier);
+ aBackgroundEventTarget->Dispatch(r.forget(), NS_DISPATCH_NORMAL);
+}
+
+void SharedWorkerService::ErrorPropagationOnMainThread(
+ nsIEventTarget* aBackgroundEventTarget, SharedWorkerParent* aActor,
+ nsresult aError) {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aBackgroundEventTarget);
+ MOZ_ASSERT(aActor);
+ MOZ_ASSERT(NS_FAILED(aError));
+
+ RefPtr<ErrorPropagationRunnable> r =
+ new ErrorPropagationRunnable(aActor, aError);
+ aBackgroundEventTarget->Dispatch(r.forget(), NS_DISPATCH_NORMAL);
+}
+
+void SharedWorkerService::RemoveWorkerManagerOnMainThread(
+ SharedWorkerManager* aManager) {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aManager);
+ MOZ_ASSERT(mWorkerManagers.Contains(aManager));
+
+ mWorkerManagers.RemoveElement(aManager);
+}
+
+} // namespace dom
+} // namespace mozilla
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