Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 263 insertions, 0 deletions

diff --git a/dom/workers/sharedworkers/SharedWorkerService.cpp b/dom/workers/sharedworkers/SharedWorkerService.cpp
new file mode 100644
index 0000000000..b543e8cb5e
--- /dev/null
+++ b/dom/workers/sharedworkers/SharedWorkerService.cpp
@@ -0,0 +1,263 @@
+/* -*- 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