//
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "tpm_manager/server/tpm2_status_impl.h"
#include
#include
#include
#include
using trunks::TPM_RC;
using trunks::TPM_RC_SUCCESS;
namespace tpm_manager {
Tpm2StatusImpl::Tpm2StatusImpl(const trunks::TrunksFactory& factory)
: trunks_factory_(factory),
trunks_tpm_state_(trunks_factory_.GetTpmState()) {}
bool Tpm2StatusImpl::IsTpmEnabled() {
if (!initialized_) {
Refresh();
}
return trunks_tpm_state_->IsEnabled();
}
bool Tpm2StatusImpl::IsTpmOwned() {
if (!is_owned_) {
Refresh();
}
is_owned_ = trunks_tpm_state_->IsOwned();
return is_owned_;
}
bool Tpm2StatusImpl::GetDictionaryAttackInfo(int* counter,
int* threshold,
bool* lockout,
int* seconds_remaining) {
if (!Refresh()) {
return false;
}
if (counter) {
*counter = trunks_tpm_state_->GetLockoutCounter();
}
if (threshold) {
*threshold = trunks_tpm_state_->GetLockoutThreshold();
}
if (lockout) {
*lockout = trunks_tpm_state_->IsInLockout();
}
if (seconds_remaining) {
*seconds_remaining = trunks_tpm_state_->GetLockoutCounter() *
trunks_tpm_state_->GetLockoutInterval();
}
return true;
}
bool Tpm2StatusImpl::Refresh() {
TPM_RC result = trunks_tpm_state_->Initialize();
if (result != TPM_RC_SUCCESS) {
LOG(WARNING) << "Error initializing trunks tpm state: "
<< trunks::GetErrorString(result);
return false;
}
initialized_ = true;
return true;
}
} // namespace tpm_manager