1 files changed, 201 insertions, 0 deletions
diff --git a/dom/workers/remoteworkers/RemoteWorkerParent.cpp b/dom/workers/remoteworkers/RemoteWorkerParent.cpp
new file mode 100644
index 0000000000..ee6c8b436e
--- /dev/null
+++ b/dom/workers/remoteworkers/RemoteWorkerParent.cpp
@@ -0,0 +1,201 @@
+/* -*- 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/SchedulerGroup.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<ThreadsafeContentParentHandle> aParent)
+      : Runnable("UnregisterActorRunnable"), mContentHandle(aParent) {
+    AssertIsOnBackgroundThread();
+  }
+
+  NS_IMETHOD
+  Run() override {
+    AssertIsOnMainThread();
+    if (RefPtr<ContentParent> contentParent =
+            mContentHandle->GetContentParent()) {
+      contentParent->UnregisterRemoveWorkerActor();
+    }
+
+    return NS_OK;
+  }
+
+ private:
+  RefPtr<ThreadsafeContentParentHandle> mContentHandle;
+};
+
+}  // namespace
+
+RemoteWorkerParent::RemoteWorkerParent() {
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(XRE_IsParentProcess());
+}
+
+RemoteWorkerParent::~RemoteWorkerParent() {
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(XRE_IsParentProcess());
+}
+
+void RemoteWorkerParent::Initialize(bool aAlreadyRegistered) {
+  RefPtr<ThreadsafeContentParentHandle> parent =
+      BackgroundParent::GetContentParentHandle(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());
+  }
+}
+
+already_AddRefed<PFetchEventOpProxyParent>
+RemoteWorkerParent::AllocPFetchEventOpProxyParent(
+    const ParentToChildServiceWorkerFetchEventOpArgs& aArgs) {
+  MOZ_CRASH("PFetchEventOpProxyParent actors must be manually constructed!");
+  return nullptr;
+}
+
+void RemoteWorkerParent::ActorDestroy(IProtocol::ActorDestroyReason) {
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(XRE_IsParentProcess());
+
+  RefPtr<ThreadsafeContentParentHandle> parent =
+      BackgroundParent::GetContentParentHandle(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();
+}
+
+IPCResult RemoteWorkerParent::RecvNotifyLock(const bool& aCreated) {
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(XRE_IsParentProcess());
+
+  if (mController) {
+    mController->NotifyLock(aCreated);
+  }
+
+  return IPC_OK();
+}
+
+IPCResult RemoteWorkerParent::RecvNotifyWebTransport(const bool& aCreated) {
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(XRE_IsParentProcess());
+
+  if (mController) {
+    mController->NotifyWebTransport(aCreated);
+  }
+
+  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(
+        GetCurrentSerialEventTarget(), __func__,
+        [resolve = aResolve](bool /* unused */) { resolve(true); },
+        [resolve = aResolve](nsresult /* unused */) { resolve(false); });
+  } else {
+    aResolve(false);
+  }
+
+  return IPC_OK();
+}
+
+}  // namespace dom
+}  // namespace mozilla