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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/service_worker/service_worker_object_host.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "content/browser/service_worker/service_worker_container_host.h"
#include "content/browser/service_worker/service_worker_context_core.h"
#include "content/browser/service_worker/service_worker_context_wrapper.h"
#include "content/browser/service_worker/service_worker_type_converters.h"
#include "content/public/browser/browser_thread.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
namespace content {
ServiceWorkerObjectHost::ServiceWorkerObjectHost(
base::WeakPtr<ServiceWorkerContextCore> context,
base::WeakPtr<ServiceWorkerContainerHost> container_host,
scoped_refptr<ServiceWorkerVersion> version)
: context_(context),
container_host_(container_host),
container_origin_(
url::Origin::Create(container_host_->url_for_access_check())),
version_(std::move(version)) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(context_ && container_host_ && version_);
DCHECK(context_->GetLiveRegistration(version_->registration_id()));
version_->AddObserver(this);
receivers_.set_disconnect_handler(base::BindRepeating(
&ServiceWorkerObjectHost::OnConnectionError, base::Unretained(this)));
}
ServiceWorkerObjectHost::~ServiceWorkerObjectHost() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
version_->RemoveObserver(this);
}
void ServiceWorkerObjectHost::OnVersionStateChanged(
ServiceWorkerVersion* version) {
DCHECK(version);
blink::mojom::ServiceWorkerState state =
mojo::ConvertTo<blink::mojom::ServiceWorkerState>(version->status());
for (auto& remote_object : remote_objects_)
remote_object->StateChanged(state);
}
blink::mojom::ServiceWorkerObjectInfoPtr
ServiceWorkerObjectHost::CreateCompleteObjectInfoToSend() {
auto info = blink::mojom::ServiceWorkerObjectInfo::New();
info->url = version_->script_url();
info->state =
mojo::ConvertTo<blink::mojom::ServiceWorkerState>(version_->status());
info->version_id = version_->version_id();
receivers_.Add(this, info->host_remote.InitWithNewEndpointAndPassReceiver());
mojo::AssociatedRemote<blink::mojom::ServiceWorkerObject> remote_object;
info->receiver = remote_object.BindNewEndpointAndPassReceiver();
remote_objects_.Add(std::move(remote_object));
return info;
}
base::WeakPtr<ServiceWorkerObjectHost> ServiceWorkerObjectHost::AsWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
void ServiceWorkerObjectHost::PostMessageToServiceWorker(
::blink::TransferableMessage message) {
// When this method is called the encoded_message inside message could just
// point to the IPC message's buffer. But that buffer can become invalid
// before the message is passed on to the service worker, so make sure
// message owns its data.
message.EnsureDataIsOwned();
DispatchExtendableMessageEvent(std::move(message), base::DoNothing());
}
void ServiceWorkerObjectHost::TerminateForTesting(
TerminateForTestingCallback callback) {
version_->StopWorker(std::move(callback));
}
void ServiceWorkerObjectHost::DispatchExtendableMessageEvent(
::blink::TransferableMessage message,
base::OnceCallback<void(blink::ServiceWorkerStatusCode)> callback) {
DCHECK(container_host_);
if (!context_) {
std::move(callback).Run(blink::ServiceWorkerStatusCode::kErrorAbort);
return;
}
DCHECK_EQ(container_origin_,
url::Origin::Create(container_host_->url_for_access_check()));
// As we don't track tasks between workers and renderers, we can nullify the
// message's parent task ID.
message.parent_task_id = std::nullopt;
container_host_->DispatchExtendableMessageEvent(version_, std::move(message),
std::move(callback));
}
void ServiceWorkerObjectHost::OnConnectionError() {
// If there are still receivers, |this| is still being used.
if (!receivers_.empty())
return;
DCHECK(container_host_);
// Will destroy |this|.
container_host_->version_object_manager().RemoveHost(version_->version_id());
}
} // namespace content
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