88 lines
3 KiB
C++
88 lines
3 KiB
C++
//
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// Copyright (C) 2014 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef TRUNKS_TPM_STATE_IMPL_H_
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#define TRUNKS_TPM_STATE_IMPL_H_
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#include "trunks/tpm_state.h"
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#include <map>
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#include <base/callback.h>
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#include <base/macros.h>
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#include "trunks/tpm_generated.h"
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#include "trunks/trunks_export.h"
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namespace trunks {
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class TrunksFactory;
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// TpmStateImpl is the default implementation of the TpmState interface.
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class TRUNKS_EXPORT TpmStateImpl : public TpmState {
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public:
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explicit TpmStateImpl(const TrunksFactory& factory);
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~TpmStateImpl() override = default;
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// TpmState methods.
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TPM_RC Initialize() override;
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bool IsOwnerPasswordSet() override;
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bool IsEndorsementPasswordSet() override;
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bool IsLockoutPasswordSet() override;
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bool IsOwned() override;
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bool IsInLockout() override;
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bool IsPlatformHierarchyEnabled() override;
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bool IsStorageHierarchyEnabled() override;
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bool IsEndorsementHierarchyEnabled() override;
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bool IsEnabled() override;
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bool WasShutdownOrderly() override;
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bool IsRSASupported() override;
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bool IsECCSupported() override;
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uint32_t GetLockoutCounter() override;
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uint32_t GetLockoutThreshold() override;
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uint32_t GetLockoutInterval() override;
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uint32_t GetLockoutRecovery() override;
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uint32_t GetMaxNVSize() override;
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bool GetTpmProperty(TPM_PT property, uint32_t* value) override;
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bool GetAlgorithmProperties(TPM_ALG_ID algorithm,
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TPMA_ALGORITHM* properties) override;
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private:
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// This helper method calls TPM2_GetCapability in a loop until all available
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// capabilities of the given type are sent to the |callback|. The callback
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// returns the next property value to query if there is more data available or
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// 0 if the capability data was empty.
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using CapabilityCallback = base::Callback<uint32_t(const TPMU_CAPABILITIES&)>;
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TPM_RC GetCapability(const CapabilityCallback& callback,
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TPM_CAP capability,
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uint32_t property,
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uint32_t max_properties_per_call);
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// Queries TPM properties and populates tpm_properties_.
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TPM_RC CacheTpmProperties();
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// Queries algorithm properties and populates algorithm_properties_.
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TPM_RC CacheAlgorithmProperties();
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const TrunksFactory& factory_;
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bool initialized_{false};
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std::map<TPM_PT, uint32_t> tpm_properties_;
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std::map<TPM_ALG_ID, TPMA_ALGORITHM> algorithm_properties_;
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DISALLOW_COPY_AND_ASSIGN(TpmStateImpl);
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};
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} // namespace trunks
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#endif // TRUNKS_TPM_STATE_IMPL_H_
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