| // Copyright 2015 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #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 <vector> |
| |
| #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: |
| explicit TpmNvramImpl(LocalDataStore* local_data_store); |
| TpmNvramImpl(const TpmNvramImpl&) = delete; |
| TpmNvramImpl& operator=(const TpmNvramImpl&) = delete; |
| |
| ~TpmNvramImpl() override = default; |
| |
| // TpmNvram methods. |
| NvramResult DefineSpace(uint32_t index, |
| size_t size, |
| const std::vector<NvramSpaceAttribute>& attributes, |
| const std::string& authorization_value, |
| NvramSpacePolicy policy) override; |
| NvramResult DestroySpace(uint32_t index) override; |
| NvramResult WriteSpace(uint32_t index, |
| const std::string& data, |
| const std::string& authorization_value) override; |
| NvramResult ReadSpace(uint32_t index, |
| std::string* data, |
| const std::string& authorization_value) override; |
| NvramResult LockSpace(uint32_t index, |
| bool lock_read, |
| bool lock_write, |
| const std::string& authorization_value) override; |
| NvramResult ListSpaces(std::vector<uint32_t>* index_list) override; |
| NvramResult GetSpaceInfo(uint32_t index, |
| uint32_t* size, |
| bool* is_read_locked, |
| bool* is_write_locked, |
| std::vector<NvramSpaceAttribute>* attributes, |
| NvramSpacePolicy* policy) override; |
| |
| void PrunePolicies() override; |
| |
| private: |
| // If |data| is a nullptr, read-locks the NV index; otherwise, reads content |
| // from the |index| with |authorization_value| and stores the content into |
| // |data|. |
| NvramResult ReadSpaceInternal(uint32_t index, |
| const std::string& authorization_value, |
| std::string* data); |
| |
| // This method creates and initializes the nvram object associated with |
| // |handle| at |index|. Returns true on success, else false. |
| bool InitializeNvramHandle(uint32_t index, |
| trousers::ScopedTssNvStore* nv_handle, |
| TpmConnection* connection); |
| |
| // Initializes the nvram handle |nv_handle| at |index| with the TPM |
| // |connection|. If |need_auth_policy| is set, the method also initializes |
| // |policy_handle| with |authorization_value| and associates |policy_handle| |
| // with |nv_handle|. |
| // |
| // Note: the caller should make sure the lifetime of |policy_handle| is >= the |
| // lifetime of |nv_handle|. |
| // |
| // Returns whether the initialization is successful. |
| bool InitializeNvramHandleWithPolicy(uint32_t index, |
| bool need_auth_policy, |
| const std::string& authorization_value, |
| trousers::ScopedTssNvStore* nv_handle, |
| trousers::ScopedTssPolicy* policy_handle, |
| TpmConnection* connection); |
| |
| // 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, |
| TpmConnection* connection); |
| |
| // 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_; |
| // A default non-owner connection. |
| TpmConnection tpm_connection_; |
| }; |
| |
| } // namespace tpm_manager |
| |
| #endif // TPM_MANAGER_SERVER_TPM_NVRAM_IMPL_H_ |