1 // 2 // Copyright (C) 2015 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef TPM_MANAGER_SERVER_TPM2_STATUS_IMPL_H_ 18 #define TPM_MANAGER_SERVER_TPM2_STATUS_IMPL_H_ 19 20 #include "tpm_manager/server/tpm_status.h" 21 22 #include <memory> 23 24 #include <base/macros.h> 25 #include <trunks/tpm_state.h> 26 #include <trunks/trunks_factory.h> 27 28 namespace tpm_manager { 29 30 class Tpm2StatusImpl : public TpmStatus { 31 public: 32 // Does not take ownership of |factory|. 33 explicit Tpm2StatusImpl(const trunks::TrunksFactory& factory); 34 ~Tpm2StatusImpl() override = default; 35 36 // TpmState methods. 37 bool IsTpmEnabled() override; 38 bool IsTpmOwned() override; 39 bool GetDictionaryAttackInfo(int* counter, 40 int* threshold, 41 bool* lockout, 42 int* seconds_remaining) override; 43 44 private: 45 // Refreshes the Tpm state information. Can be called as many times as needed 46 // to refresh the cached information in this class. Return true if the 47 // refresh operation succeeded. 48 bool Refresh(); 49 50 bool initialized_{false}; 51 bool is_owned_{false}; 52 const trunks::TrunksFactory& trunks_factory_; 53 std::unique_ptr<trunks::TpmState> trunks_tpm_state_; 54 55 DISALLOW_COPY_AND_ASSIGN(Tpm2StatusImpl); 56 }; 57 58 } // namespace tpm_manager 59 60 #endif // TPM_MANAGER_SERVER_TPM2_STATUS_IMPL_H_ 61
