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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PERMISSIONS_CROWD_DENY_SAFE_BROWSING_REQUEST_H_
#define CHROME_BROWSER_PERMISSIONS_CROWD_DENY_SAFE_BROWSING_REQUEST_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "content/public/browser/browser_thread.h"
namespace base {
class Clock;
}
namespace url {
class Origin;
}
namespace safe_browsing {
class SafeBrowsingDatabaseManager;
}
// Represents a single request to the Safe Browsing service to fetch the crowd
// deny verdict for a given origin. Can be created and used on any one thread.
class CrowdDenySafeBrowsingRequest {
public:
// The crowd deny verdict for a given origin.
//
// These enumeration values are recorded into histograms. Entries should not
// be renumbered and numeric values should not be reused.
enum class Verdict {
kAcceptable = 0,
kUnacceptable = 1,
// Must be equal to the greatest among enumeraiton values.
kMaxValue = kUnacceptable,
};
using VerdictCallback = base::OnceCallback<void(Verdict)>;
// Constructs a request that fetches the verdict for |origin| by consulting
// the |database_manager|, and invokes |callback| when done. The |clock| is
// used for measuring how long the request takes, and should outlive |this|.
//
// It is guaranteed that |callback| will never be invoked synchronously, and
// it will not be invoked after |this| goes out of scope.
CrowdDenySafeBrowsingRequest(
scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager>
database_manager,
const base::Clock* clock,
const url::Origin& origin,
VerdictCallback callback);
~CrowdDenySafeBrowsingRequest();
private:
class SafeBrowsingClient;
CrowdDenySafeBrowsingRequest(const CrowdDenySafeBrowsingRequest&) = delete;
CrowdDenySafeBrowsingRequest& operator=(const CrowdDenySafeBrowsingRequest&) =
delete;
// Posted by the |client_| when it gets a response.
void OnReceivedResult(Verdict verdict);
// The client interfacing with Safe Browsing.
std::unique_ptr<SafeBrowsingClient> client_;
VerdictCallback callback_;
// For telemetry purposes. The caller guarantees |clock_| to outlive |this|.
raw_ptr<const base::Clock> clock_;
const base::Time request_start_time_;
base::WeakPtrFactory<CrowdDenySafeBrowsingRequest> weak_factory_{this};
};
#endif // CHROME_BROWSER_PERMISSIONS_CROWD_DENY_SAFE_BROWSING_REQUEST_H_
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