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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_NEW_SCRIPT_FETCHER_H_
#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_NEW_SCRIPT_FETCHER_H_
#include "base/functional/callback.h"
#include "base/memory/raw_ref.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "content/browser/service_worker/service_worker_version.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "services/network/public/mojom/url_loader.mojom.h"
#include "third_party/blink/public/mojom/loader/fetch_client_settings_object.mojom.h"
#include "third_party/blink/public/mojom/worker/worker_main_script_load_params.mojom.h"
namespace content {
class ServiceWorkerContextCore;
class ServiceWorkerVersion;
// PlzServiceWorker:
// Fetches the service worker's main script and creates
// blink::mojom::WorkerMainScriptLoadParams to start a worker.
//
// This is used only when the worker is newly installed and the byte-for-byte
// update checking is not invoked. The worker script needs to be loaded on the
// browser process before selecting a process for the worker thread because we
// need to know whether the worker thread needs to be in the COOP-COEP protected
// process or not.
//
// Internally, this class creates ServiceWorkerNewScriptLoader to start loading
// the script. After receiving the response header and the Mojo data pipe for
// the body, the Mojo endpoints owned by this instance gets unbound and passed
// to the struct blink::mojom::WorkerMainScriptLoadParams along with the
// response header and the Mojo data pipe so that the renderer takes over
// ownership of ServiceWorkerNewScriptLoader.
class CONTENT_EXPORT ServiceWorkerNewScriptFetcher
: public network::mojom::URLLoaderClient {
public:
ServiceWorkerNewScriptFetcher(
ServiceWorkerContextCore& context,
scoped_refptr<ServiceWorkerVersion> version,
scoped_refptr<network::SharedURLLoaderFactory> loader_factory,
blink::mojom::FetchClientSettingsObjectPtr fetch_client_settings_object,
const GlobalRenderFrameHostId& requesting_frame_id);
~ServiceWorkerNewScriptFetcher() override;
// Callback called when the main script load params are ready. Called with
// null struct on an error.
using StartCallback =
base::OnceCallback<void(blink::mojom::WorkerMainScriptLoadParamsPtr)>;
void Start(StartCallback callback);
private:
void StartScriptLoadingWithNewResourceID(int64_t resource_id);
// network::mojom::URLLoaderClient
void OnReceiveEarlyHints(network::mojom::EarlyHintsPtr early_hints) override;
void OnReceiveResponse(
network::mojom::URLResponseHeadPtr response_head,
mojo::ScopedDataPipeConsumerHandle response_body,
std::optional<mojo_base::BigBuffer> cached_metadata) override;
void OnReceiveRedirect(
const net::RedirectInfo& redirect_info,
network::mojom::URLResponseHeadPtr response_head) override;
void OnUploadProgress(int64_t current_position,
int64_t total_size,
OnUploadProgressCallback callback) override;
void OnTransferSizeUpdated(int32_t transfer_size_diff) override;
void OnComplete(const network::URLLoaderCompletionStatus& status) override;
const raw_ref<ServiceWorkerContextCore> context_;
scoped_refptr<ServiceWorkerVersion> version_;
scoped_refptr<network::SharedURLLoaderFactory> loader_factory_;
blink::mojom::FetchClientSettingsObjectPtr fetch_client_settings_object_;
// Request ID for a browser-initiated request.
const int request_id_;
// Called when the header and the data pipe for the body are ready.
StartCallback callback_;
// The global routing id of the frame that made the SW registration request.
// Note: This is only valid with PlzServiceWorker.
const GlobalRenderFrameHostId requesting_frame_id_;
// Mojo endpoint connected to ServiceWorkerNewScriptLoader.
mojo::Remote<network::mojom::URLLoader> url_loader_remote_;
mojo::Receiver<network::mojom::URLLoaderClient> url_loader_client_receiver_{
this};
base::WeakPtrFactory<ServiceWorkerNewScriptFetcher> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_NEW_SCRIPT_FETCHER_H_
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