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// Copyright 2023 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_LOADER_PREFETCH_URL_LOADER_SERVICE_CONTEXT_H_
#define CONTENT_BROWSER_LOADER_PREFETCH_URL_LOADER_SERVICE_CONTEXT_H_
#include "base/functional/callback.h"
#include "content/browser/loader/subresource_proxying_url_loader_service.h"
#include "content/common/content_export.h"
#include "content/public/browser/frame_tree_node_id.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "net/base/load_flags.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "third_party/blink/public/mojom/renderer_preference_watcher.mojom.h"
namespace blink {
class URLLoaderThrottle;
}
namespace content {
class BrowserContext;
// Contains the data and functions to handle <link rel="prefetch"> requests.
class CONTENT_EXPORT PrefetchURLLoaderServiceContext final
: public blink::mojom::RendererPreferenceWatcher {
public:
using BindContext = SubresourceProxyingURLLoaderService::BindContext;
PrefetchURLLoaderServiceContext(
BrowserContext* browser_context,
mojo::ReceiverSet<network::mojom::URLLoaderFactory,
scoped_refptr<BindContext>>& loader_factory_receivers);
~PrefetchURLLoaderServiceContext() override;
PrefetchURLLoaderServiceContext(const PrefetchURLLoaderServiceContext&) =
delete;
PrefetchURLLoaderServiceContext& operator=(
const PrefetchURLLoaderServiceContext&) = delete;
void CreatePrefetchLoaderAndStart(
mojo::PendingReceiver<network::mojom::URLLoader> receiver,
int32_t request_id,
uint32_t options,
const network::ResourceRequest& resource_request_in,
mojo::PendingRemote<network::mojom::URLLoaderClient> client,
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation);
// Register a callback that is fired right before a prefetch load is started
// by this service.
void RegisterPrefetchLoaderCallbackForTest(
const base::RepeatingClosure& prefetch_load_callback) {
prefetch_load_callback_for_testing_ = prefetch_load_callback;
}
void SetAcceptLanguages(const std::string& accept_langs) {
accept_langs_ = accept_langs;
}
static bool IsPrefetchRequest(const network::ResourceRequest& request) {
return request.load_flags & net::LOAD_PREFETCH;
}
private:
// This ensures that the BindContext's |cross_origin_factory| member
// exists by setting it to a special URLLoaderFactory created by the current
// context's RenderFrameHost.
void EnsureCrossOriginFactory();
bool IsValidCrossOriginPrefetch(
const network::ResourceRequest& resource_request);
base::UnguessableToken GenerateRecursivePrefetchToken(
base::WeakPtr<BindContext> bind_context,
const network::ResourceRequest& request);
// blink::mojom::RendererPreferenceWatcher.
void NotifyUpdate(const blink::RendererPreferences& new_prefs) override;
// For URLLoaderThrottlesGetter.
std::vector<std::unique_ptr<blink::URLLoaderThrottle>>
CreateURLLoaderThrottles(const network::ResourceRequest& request,
FrameTreeNodeId frame_tree_node_id);
BindContext* current_bind_context() const {
return loader_factory_receivers_->current_context().get();
}
raw_ptr<BrowserContext> browser_context_ = nullptr;
raw_ref<mojo::ReceiverSet<network::mojom::URLLoaderFactory,
scoped_refptr<BindContext>>>
loader_factory_receivers_;
mojo::ReceiverSet<network::mojom::URLLoader,
std::unique_ptr<network::mojom::URLLoader>>
prefetch_loader_receivers_;
// Used in the IO thread.
mojo::Receiver<blink::mojom::RendererPreferenceWatcher>
preference_watcher_receiver_{this};
base::RepeatingClosure prefetch_load_callback_for_testing_;
std::string accept_langs_;
};
} // namespace content
#endif // CONTENT_BROWSER_LOADER_PREFETCH_URL_LOADER_SERVICE_CONTEXT_H_
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