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// Copyright 2022 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_ORIGIN_TRIALS_CRITICAL_ORIGIN_TRIALS_THROTTLE_H_
#define CONTENT_BROWSER_ORIGIN_TRIALS_CRITICAL_ORIGIN_TRIALS_THROTTLE_H_
#include <optional>
#include "base/containers/flat_set.h"
#include "base/memory/raw_ref.h"
#include "content/common/content_export.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "third_party/blink/public/common/loader/url_loader_throttle.h"
#include "url/gurl.h"
namespace content {
class OriginTrialsControllerDelegate;
class CONTENT_EXPORT CriticalOriginTrialsThrottle
: public blink::URLLoaderThrottle {
public:
// Create a throttle using the passed |origin_trials_delegate| for token
// validation and the |top_frame_origin| as the partition origin. An empty
// optional should be passed for |top_frame_origin| if the request is a main
// frame navigation request.
// TODO(crbug.com/40254225): Switch |top_frame_origin| to use Cookie
// partitioning.
CriticalOriginTrialsThrottle(
OriginTrialsControllerDelegate& origin_trials_delegate,
std::optional<url::Origin> top_frame_origin,
std::optional<ukm::SourceId> source_id);
~CriticalOriginTrialsThrottle() override;
// blink::URLLoaderThrottle
void WillStartRequest(network::ResourceRequest* request,
bool* defer) override;
void BeforeWillProcessResponse(
const GURL& response_url,
const network::mojom::URLResponseHead& response_head,
RestartWithURLReset* restart_with_url_reset) override;
void BeforeWillRedirectRequest(
net::RedirectInfo* redirect_info,
const network::mojom::URLResponseHead& response_head,
RestartWithURLReset* restart_with_url_reset,
std::vector<std::string>* to_be_removed_request_headers,
net::HttpRequestHeaders* modified_request_headers,
net::HttpRequestHeaders* modified_cors_exempt_request_headers) override;
// This throttle only handles navigation requests. Use this method to
// determine if the throttle will handle the passed-in |request| before
// constructing a throttle.
static bool IsNavigationRequest(const network::ResourceRequest& request);
private:
// The delegate is owned by the BrowserContext, and is expected to outlive
// this throttle.
raw_ref<OriginTrialsControllerDelegate, DanglingUntriaged>
origin_trials_delegate_;
std::optional<url::Origin> top_frame_origin_;
bool is_navigation_request_ = false;
// Ensure that there's only one restart per origin.
base::flat_set<url::Origin> restarted_origins_;
// Url of the last request made.
GURL request_url_;
// UKM source ID for the last request made.
std::optional<ukm::SourceId> source_id_;
// Trials that were persisted for the origin at the beginning of the request.
base::flat_set<std::string> original_persisted_trials_;
// Determine if critical origin trials have been enabled by the server
// response and a restart is required.
void MaybeRestartWithTrials(
const network::mojom::URLResponseHead& response_head,
RestartWithURLReset* restart_with_url_reset);
// Stores the pre-request information, so it can be compared with the received
// response headers.
void SetPreRequestFields(const GURL& request_url);
};
} // namespace content
#endif // CONTENT_BROWSER_ORIGIN_TRIALS_CRITICAL_ORIGIN_TRIALS_THROTTLE_H_
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