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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_ATTESTATION_ATTESTATION_FEATURES_H_
#define CHROMEOS_ASH_COMPONENTS_ATTESTATION_ATTESTATION_FEATURES_H_
#include "base/component_export.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "chromeos/ash/components/dbus/attestation/interface.pb.h"
#include "chromeos/ash/components/dbus/constants/attestation_constants.h"
#include "chromeos/dbus/common/dbus_callback.h"
namespace ash::attestation {
// AttestationFeatures maintains the attestation features, e.g. attestation
// availability, RSA/ECC support.
class COMPONENT_EXPORT(CHROMEOS_ASH_COMPONENTS_ATTESTATION)
AttestationFeatures {
public:
using AttestationFeaturesCallback =
base::OnceCallback<void(const AttestationFeatures* features)>;
// Manage singleton instance.
static void Initialize();
static bool IsInitialized();
static void Shutdown();
static const AttestationFeatures* Get();
// Run the |callback| with the pointer of the AttestationFeatures instance
// after it is prepared completely. If we failed to prepare the
// AttestationFatures, the pointer would be nullptr.
static void GetFeatures(AttestationFeaturesCallback callback);
// Sets the singleton to |test_instance|. Does not take ownership of the
// instance. Should be matched with a call to |ShutdownForTesting| once the
// test is finished and before the instance is deleted.
static void SetForTesting(AttestationFeatures* test_instance);
static void ShutdownForTesting();
AttestationFeatures() = default;
AttestationFeatures(const AttestationFeatures&) = delete;
AttestationFeatures& operator=(const AttestationFeatures&) = delete;
virtual ~AttestationFeatures() = default;
virtual void Init() = 0;
// Return the availability of the attestation service, e.g. preparation
// enrollment, and certification.
virtual bool IsAttestationAvailable() const = 0;
// Returns if the RSA type of certified keys is supported.
virtual bool IsRsaSupported() const = 0;
// Returns if the ECC type of certified keys is supported.
virtual bool IsEccSupported() const = 0;
};
} // namespace ash::attestation
#endif // CHROMEOS_ASH_COMPONENTS_ATTESTATION_ATTESTATION_FEATURES_H_
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