| // 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_CONNECTION_H_ |
| #define TPM_MANAGER_SERVER_TPM_CONNECTION_H_ |
| |
| #include <string> |
| |
| #include <base/macros.h> |
| #include <tpm_manager/proto_bindings/tpm_manager.pb.h> |
| #include <trousers/scoped_tss_type.h> |
| |
| namespace tpm_manager { |
| |
| class TpmConnection { |
| public: |
| enum ConnectionType { |
| kConnectWithoutAuth, |
| kConnectWithPassword, |
| kConnectWithDelegate, |
| }; |
| |
| // Creates a TPM connection as a normal user w/o any auth. |
| TpmConnection(); |
| |
| // Creates a TPM connection on behalf of the owner with |owner_password|. |
| explicit TpmConnection(const std::string& owner_password); |
| |
| // Creates a TPM connection on behalf of the owner with the owner delegate. |
| explicit TpmConnection(const AuthDelegate& owner_delegate); |
| |
| ~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_; |
| |
| const std::string owner_password_; |
| const AuthDelegate owner_delegate_; |
| const ConnectionType connection_type_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TpmConnection); |
| }; |
| |
| } // namespace tpm_manager |
| |
| #endif // TPM_MANAGER_SERVER_TPM_CONNECTION_H_ |