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// Copyright 2024 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_WEBAUTHN_CHALLENGE_URL_FETCHER_H_
#define CHROME_BROWSER_WEBAUTHN_CHALLENGE_URL_FETCHER_H_
#include <memory>
#include <optional>
#include <vector>
#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/types/expected.h"
#include "url/gurl.h"
namespace network {
class SharedURLLoaderFactory;
class SimpleURLLoader;
} // namespace network
// Retrieves and caches a challenge from a challenge URL. This is owned by
// AuthenticatorRequestDialogController and exists per-request.
class ChallengeUrlFetcher {
public:
enum class ChallengeNotAvailableReason {
kNotRequested,
kWaitingForChallenge,
kErrorFetchingChallenge,
};
explicit ChallengeUrlFetcher(
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory);
virtual ~ChallengeUrlFetcher();
void FetchUrl(GURL challenge_url, base::OnceClosure callback);
base::expected<std::vector<uint8_t>, ChallengeNotAvailableReason>
GetChallenge();
private:
enum class State {
kFetchNotStarted,
kFetchInProgress,
kChallengeReceived,
kError,
};
void OnChallengeReceived(std::optional<std::string> response_body);
State state_ = State::kFetchNotStarted;
std::vector<uint8_t> challenge_;
base::OnceClosure callback_;
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_;
std::unique_ptr<network::SimpleURLLoader> url_loader_;
base::WeakPtrFactory<ChallengeUrlFetcher> weak_ptr_factory_{this};
};
#endif // CHROME_BROWSER_WEBAUTHN_CHALLENGE_URL_FETCHER_H_
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