| // |
| // 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. |
| // |
| |
| #ifndef TPM_MANAGER_SERVER_TPM_CONNECTION_H_ |
| #define TPM_MANAGER_SERVER_TPM_CONNECTION_H_ |
| |
| #include <string> |
| |
| #include <base/macros.h> |
| #include <trousers/scoped_tss_type.h> |
| |
| namespace tpm_manager { |
| |
| class TpmConnection { |
| public: |
| TpmConnection() = default; |
| // Create a TPM connection and set an |authorization_value| for the TPM object |
| // (e.g. the TPM owner password). |
| explicit TpmConnection(const std::string& authorization_value); |
| ~TpmConnection() = default; |
| |
| // This method returns a handle to the current Tpm context. |
| // Note: this method still retains ownership of the context. If this class |
| // is deleted, the context handle will be invalidated. Returns 0 on failure. |
| TSS_HCONTEXT GetContext(); |
| |
| // This method tries to get a handle to the TPM. Returns 0 on failure. |
| TSS_HTPM GetTpm(); |
| |
| private: |
| // This method connects to the Tpm. Returns true on success. |
| bool ConnectContextIfNeeded(); |
| |
| trousers::ScopedTssContext context_; |
| std::string authorization_value_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TpmConnection); |
| }; |
| |
| } // namespace tpm_manager |
| |
| #endif // TPM_MANAGER_SERVER_TPM_CONNECTION_H_ |