1 // 2 // Copyright (C) 2014 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 TRUNKS_TPM_STATE_IMPL_H_ 18 #define TRUNKS_TPM_STATE_IMPL_H_ 19 20 #include "trunks/tpm_state.h" 21 22 #include <base/macros.h> 23 24 #include "trunks/tpm_generated.h" 25 #include "trunks/trunks_export.h" 26 27 namespace trunks { 28 29 class TrunksFactory; 30 31 // TpmStateImpl is the default implementation of the TpmState interface. 32 class TRUNKS_EXPORT TpmStateImpl : public TpmState { 33 public: 34 explicit TpmStateImpl(const TrunksFactory& factory); 35 ~TpmStateImpl() override; 36 37 // TpmState methods. 38 TPM_RC Initialize() override; 39 bool IsOwnerPasswordSet() override; 40 bool IsEndorsementPasswordSet() override; 41 bool IsLockoutPasswordSet() override; 42 bool IsOwned() override; 43 bool IsInLockout() override; 44 bool IsPlatformHierarchyEnabled() override; 45 bool IsStorageHierarchyEnabled() override; 46 bool IsEndorsementHierarchyEnabled() override; 47 bool IsEnabled() override; 48 bool WasShutdownOrderly() override; 49 bool IsRSASupported() override; 50 bool IsECCSupported() override; 51 uint32_t GetLockoutCounter() override; 52 uint32_t GetLockoutThreshold() override; 53 uint32_t GetLockoutInterval() override; 54 uint32_t GetLockoutRecovery() override; 55 56 private: 57 // This helped method calls Tpm2_GetCapability with TPM_CAP_TPM_PROPERTIES 58 // and |property|. The returned structure is validated, and the value returned 59 // is stored in the out argument |value|. Returns TPM_RC_SUCCESS on success. 60 TPM_RC GetTpmProperty(uint32_t property, uint32_t* value); 61 62 const TrunksFactory& factory_; 63 bool initialized_; 64 TPMA_PERMANENT permanent_flags_; 65 TPMA_STARTUP_CLEAR startup_clear_flags_; 66 uint32_t lockout_counter_; 67 uint32_t lockout_threshold_; 68 uint32_t lockout_interval_; 69 uint32_t lockout_recovery_; 70 TPMA_ALGORITHM rsa_flags_; 71 TPMA_ALGORITHM ecc_flags_; 72 73 DISALLOW_COPY_AND_ASSIGN(TpmStateImpl); 74 }; 75 76 } // namespace trunks 77 78 #endif // TRUNKS_TPM_STATE_IMPL_H_ 79