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82 lines
2.3 KiB
82 lines
2.3 KiB
// |
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// Copyright (C) 2015 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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#include "tpm_manager/server/tpm2_status_impl.h" |
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#include <base/logging.h> |
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#include <trunks/error_codes.h> |
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#include <trunks/tpm_generated.h> |
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#include <trunks/trunks_factory_impl.h> |
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using trunks::TPM_RC; |
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using trunks::TPM_RC_SUCCESS; |
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namespace tpm_manager { |
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Tpm2StatusImpl::Tpm2StatusImpl(const trunks::TrunksFactory& factory) |
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: trunks_factory_(factory), |
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trunks_tpm_state_(trunks_factory_.GetTpmState()) {} |
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bool Tpm2StatusImpl::IsTpmEnabled() { |
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if (!initialized_) { |
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Refresh(); |
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} |
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return trunks_tpm_state_->IsEnabled(); |
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} |
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bool Tpm2StatusImpl::IsTpmOwned() { |
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if (!is_owned_) { |
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Refresh(); |
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} |
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is_owned_ = trunks_tpm_state_->IsOwned(); |
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return is_owned_; |
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} |
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bool Tpm2StatusImpl::GetDictionaryAttackInfo(int* counter, |
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int* threshold, |
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bool* lockout, |
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int* seconds_remaining) { |
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if (!Refresh()) { |
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return false; |
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} |
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if (counter) { |
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*counter = trunks_tpm_state_->GetLockoutCounter(); |
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} |
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if (threshold) { |
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*threshold = trunks_tpm_state_->GetLockoutThreshold(); |
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} |
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if (lockout) { |
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*lockout = trunks_tpm_state_->IsInLockout(); |
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} |
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if (seconds_remaining) { |
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*seconds_remaining = trunks_tpm_state_->GetLockoutCounter() * |
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trunks_tpm_state_->GetLockoutInterval(); |
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} |
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return true; |
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} |
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bool Tpm2StatusImpl::Refresh() { |
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TPM_RC result = trunks_tpm_state_->Initialize(); |
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if (result != TPM_RC_SUCCESS) { |
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LOG(WARNING) << "Error initializing trunks tpm state: " |
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<< trunks::GetErrorString(result); |
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return false; |
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} |
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initialized_ = true; |
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return true; |
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} |
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} // namespace tpm_manager
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