| // |
| // 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_NVRAM_IMPL_H_ |
| #define TPM_MANAGER_SERVER_TPM_NVRAM_IMPL_H_ |
| |
| #include "tpm_manager/server/tpm_nvram.h" |
| |
| #include <stdint.h> |
| |
| #include <string> |
| |
| #include <base/macros.h> |
| #include <trousers/scoped_tss_type.h> |
| #include <trousers/tss.h> |
| |
| #include "tpm_manager/server/tpm_connection.h" |
| |
| namespace tpm_manager { |
| |
| class LocalDataStore; |
| |
| class TpmNvramImpl : public TpmNvram { |
| public: |
| TpmNvramImpl(LocalDataStore* local_data_store); |
| ~TpmNvramImpl() override = default; |
| |
| // TpmNvram methods. |
| bool DefineNvram(uint32_t index, size_t length) override; |
| bool DestroyNvram(uint32_t index) override; |
| bool WriteNvram(uint32_t index, const std::string& data) override; |
| bool ReadNvram(uint32_t index, std::string* data) override; |
| bool IsNvramDefined(uint32_t index, bool* defined) override; |
| bool IsNvramLocked(uint32_t index, bool* locked) override; |
| bool GetNvramSize(uint32_t index, size_t* size) override; |
| |
| private: |
| // This method creates and initializes the nvram object associated with |
| // |handle| at |index|. Returns true on success, else false. |
| bool InitializeNvramHandle(trousers::ScopedTssNvStore* nv_handle, |
| uint32_t index); |
| |
| // This method injects a tpm policy with the owner password. Returns true |
| // on success. |
| bool SetOwnerPolicy(trousers::ScopedTssNvStore* nv_handle); |
| |
| // This method sets up the composite pcr provided by |pcr_handle| with the |
| // value of PCR0 at locality 1. Returns true on success. |
| bool SetCompositePcr0(trousers::ScopedTssPcrs* pcr_handle); |
| |
| // This method gets the owner password stored on disk and returns it via the |
| // out argument |owner_password|. Returns true if we were able to read a |
| // non empty owner_password off disk, else false. |
| bool GetOwnerPassword(std::string* owner_password); |
| |
| LocalDataStore* local_data_store_; |
| TpmConnection tpm_connection_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TpmNvramImpl); |
| }; |
| |
| } // namespace tpm_manager |
| |
| #endif // TPM_MANAGER_SERVER_TPM_NVRAM_IMPL_H_ |