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_TPM_STATUS_H_ 18 #define TPM_MANAGER_SERVER_TPM_STATUS_H_ 19 20 namespace tpm_manager { 21 22 // TpmStatus is an interface class that reports status information for some kind 23 // of TPM device. 24 class TpmStatus { 25 public: 26 TpmStatus() = default; 27 virtual ~TpmStatus() = default; 28 29 // Returns true iff the TPM is enabled. 30 virtual bool IsTpmEnabled() = 0; 31 // Returns true iff the TPM has been owned. 32 virtual bool IsTpmOwned() = 0; 33 // Reports the current state of the TPM dictionary attack logic. 34 virtual bool GetDictionaryAttackInfo(int* counter, 35 int* threshold, 36 bool* lockout, 37 int* seconds_remaining) = 0; 38 }; 39 40 } // namespace tpm_manager 41 42 #endif // TPM_MANAGER_SERVER_TPM_STATUS_H_ 43