1 // 2 // Copyright (C) 2020 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 #pragma once 17 18 #include <list> 19 #include <mutex> 20 #include <vector> 21 22 #include <tss2/tss2_tcti.h> 23 24 #include "host/commands/secure_env/tpm.h" 25 26 /* 27 * Exposes a TSS2_TCTI_CONTEXT for interacting with an in-process TPM simulator. 28 * 29 * TSS2_TCTI_CONTEXT is the abstraction for "communication channel to a TPM". 30 * It is not safe to create more than one of these per process or per working 31 * directory, as the TPM simulator implementation relies heavily on global 32 * variables and files saved in the working directory. 33 * 34 * TODO(schuffelen): Consider moving this to a separate process with its own 35 * working directory. 36 */ 37 class InProcessTpm : public Tpm { 38 public: 39 InProcessTpm(); 40 ~InProcessTpm(); 41 42 TSS2_TCTI_CONTEXT* TctiContext() override; 43 private: 44 struct Impl; 45 46 std::unique_ptr<Impl> impl_; 47 }; 48