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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_EXTENSION_URL_LOADER_THROTTLE_H_
#define EXTENSIONS_RENDERER_EXTENSION_URL_LOADER_THROTTLE_H_
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "extensions/renderer/extension_throttle_manager.h"
#include "third_party/blink/public/common/loader/url_loader_throttle.h"
#include "url/gurl.h"
namespace extensions {
class ExtensionThrottleManager;
// This class monitors requests issued by extensions and throttles the request
// if there are too many requests made within a short time to urls with the same
// scheme, host, port and path. For the exact criteria for throttling, please
// also see extension_throttle_manager.cc.
class ExtensionURLLoaderThrottle
: public blink::URLLoaderThrottle,
public ExtensionThrottleManager::ExtensionThrottleManagerObserver {
public:
explicit ExtensionURLLoaderThrottle(ExtensionThrottleManager* manager);
ExtensionURLLoaderThrottle(const ExtensionURLLoaderThrottle&) = delete;
ExtensionURLLoaderThrottle& operator=(const ExtensionURLLoaderThrottle&) =
delete;
~ExtensionURLLoaderThrottle() override;
// blink::URLLoaderThrottle:
void WillStartRequest(network::ResourceRequest* request,
bool* defer) override;
void WillRedirectRequest(
net::RedirectInfo* redirect_info,
const network::mojom::URLResponseHead& response_head,
bool* defer,
std::vector<std::string>* to_be_removed_request_headers,
net::HttpRequestHeaders* modified_request_headers,
net::HttpRequestHeaders* modified_cors_exempt_request_headers) override;
void WillProcessResponse(const GURL& response_url,
network::mojom::URLResponseHead* response_head,
bool* defer) override;
// ExtensionThrottleManagerObserver.
void OnExtensionThrottleManagerDestruct(
ExtensionThrottleManager* manager) override;
private:
// blink::URLLoaderThrottle:
void DetachFromCurrentSequence() override;
raw_ptr<ExtensionThrottleManager> manager_ = nullptr;
GURL start_request_url_;
base::ScopedObservation<ExtensionThrottleManager,
ExtensionThrottleManagerObserver>
manager_observation_{this};
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_EXTENSION_URL_LOADER_THROTTLE_H_
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