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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 CHROMEOS_ASH_COMPONENTS_OSAUTH_PUBLIC_CRYPTOHOME_CORE_H_
#define CHROMEOS_ASH_COMPONENTS_OSAUTH_PUBLIC_CRYPTOHOME_CORE_H_
#include <memory>
#include "base/component_export.h"
#include "base/functional/callback.h"
#include "chromeos/ash/components/osauth/public/auth_parts.h"
#include "chromeos/ash/components/osauth/public/common_types.h"
namespace cryptohome {
class AuthFactorRef;
}
namespace ash {
class UserContext;
class AuthPerformer;
// This class is reused by various cryptohome-based AuthFactorEngines to
// reuse common operations (e.g. waiting for service initializaion, or
// establishing AuthSession).
class COMPONENT_EXPORT(CHROMEOS_ASH_COMPONENTS_OSAUTH) CryptohomeCore {
public:
using ServiceAvailabilityCallback = base::OnceCallback<void(bool available)>;
class COMPONENT_EXPORT(CHROMEOS_ASH_COMPONENTS_OSAUTH) Client {
public:
virtual ~Client() = default;
virtual void OnCryptohomeAuthSessionStarted() = 0;
virtual void OnAuthSessionStartFailure() = 0;
virtual void OnAuthFactorUpdate(cryptohome::AuthFactorRef factor) = 0;
virtual void OnCryptohomeAuthSessionFinished() = 0;
};
// Convenience method.
static inline CryptohomeCore* Get() {
return AuthParts::Get()->GetCryptohomeCore();
}
virtual ~CryptohomeCore() = default;
virtual void WaitForService(ServiceAvailabilityCallback callback) = 0;
virtual void StartAuthSession(const AuthAttemptVector& attempt,
Client* client) = 0;
virtual void EndAuthSession(Client* client) = 0;
virtual AuthPerformer* GetAuthPerformer() const = 0;
virtual UserContext* GetCurrentContext() const = 0;
// Borrows the UserContext to perform Cryptohome actions in |callback|.
// If the UserContext has been borrowed, the callback will be queued
// to be called when the UserContext is returned.
virtual void BorrowContext(BorrowContextCallback callback) = 0;
// Returns the UserContext and if there are queued borrow callbacks,
// the first queued callback will take the returned context and
// get called.
virtual void ReturnContext(std::unique_ptr<UserContext> context) = 0;
virtual AuthProofToken StoreAuthenticationContext() = 0;
};
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_OSAUTH_PUBLIC_CRYPTOHOME_CORE_H_
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