1 files changed, 97 insertions, 0 deletions
diff --git a/dom/clients/manager/ClientHandleOpParent.cpp b/dom/clients/manager/ClientHandleOpParent.cpp
new file mode 100644
index 0000000000..c5bd4d6586
--- /dev/null
+++ b/dom/clients/manager/ClientHandleOpParent.cpp
@@ -0,0 +1,97 @@
+/* -*- 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 "ClientHandleOpParent.h"
+
+#include "ClientHandleParent.h"
+#include "ClientSourceParent.h"
+#include "mozilla/dom/ipc/StructuredCloneData.h"
+#include "mozilla/dom/PClientManagerParent.h"
+
+namespace mozilla::dom {
+
+ClientSourceParent* ClientHandleOpParent::GetSource() const {
+  auto handle = static_cast<ClientHandleParent*>(Manager());
+  return handle->GetSource();
+}
+
+void ClientHandleOpParent::ActorDestroy(ActorDestroyReason aReason) {
+  mPromiseRequestHolder.DisconnectIfExists();
+  mSourcePromiseRequestHolder.DisconnectIfExists();
+}
+
+void ClientHandleOpParent::Init(ClientOpConstructorArgs&& aArgs) {
+  RefPtr<ClientHandleParent> handle =
+      static_cast<ClientHandleParent*>(Manager());
+  handle->EnsureSource()
+      ->Then(
+          GetCurrentSerialEventTarget(), __func__,
+          [this, handle, args = std::move(aArgs)](bool) mutable {
+            mSourcePromiseRequestHolder.Complete();
+
+            auto source = handle->GetSource();
+            if (!source) {
+              CopyableErrorResult rv;
+              rv.ThrowAbortError("Client has been destroyed");
+              Unused << PClientHandleOpParent::Send__delete__(this, rv);
+              return;
+            }
+            RefPtr<ClientOpPromise> p;
+
+            // ClientPostMessageArgs can contain PBlob actors.  This means we
+            // can't just forward the args from one PBackground manager to
+            // another.  Instead, unpack the structured clone data and repack
+            // it into a new set of arguments.
+            if (args.type() ==
+                ClientOpConstructorArgs::TClientPostMessageArgs) {
+              const ClientPostMessageArgs& orig =
+                  args.get_ClientPostMessageArgs();
+
+              ClientPostMessageArgs rebuild;
+              rebuild.serviceWorker() = orig.serviceWorker();
+
+              ipc::StructuredCloneData data;
+              data.BorrowFromClonedMessageData(orig.clonedData());
+              if (!data.BuildClonedMessageData(rebuild.clonedData())) {
+                CopyableErrorResult rv;
+                rv.ThrowAbortError("Aborting client operation");
+                Unused << PClientHandleOpParent::Send__delete__(this, rv);
+                return;
+              }
+
+              p = source->StartOp(std::move(rebuild));
+            }
+
+            // Other argument types can just be forwarded straight through.
+            else {
+              p = source->StartOp(std::move(args));
+            }
+
+            // Capturing 'this' is safe here because we disconnect the promise
+            // in ActorDestroy() which ensures neither lambda is called if the
+            // actor is destroyed before the source operation completes.
+            p->Then(
+                 GetCurrentSerialEventTarget(), __func__,
+                 [this](const ClientOpResult& aResult) {
+                   mPromiseRequestHolder.Complete();
+                   Unused << PClientHandleOpParent::Send__delete__(this,
+                                                                   aResult);
+                 },
+                 [this](const CopyableErrorResult& aRv) {
+                   mPromiseRequestHolder.Complete();
+                   Unused << PClientHandleOpParent::Send__delete__(this, aRv);
+                 })
+                ->Track(mPromiseRequestHolder);
+          },
+          [=](const CopyableErrorResult& failure) {
+            mSourcePromiseRequestHolder.Complete();
+            Unused << PClientHandleOpParent::Send__delete__(this, failure);
+            return;
+          })
+      ->Track(mSourcePromiseRequestHolder);
+}
+
+}  // namespace mozilla::dom