59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
//
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// Copyright (C) 2020 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "host/commands/secure_env/device_tpm.h"
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#include <android-base/logging.h>
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#include <tss2/tss2_rc.h>
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#include <tss2/tss2_tcti.h>
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#include <tss2/tss2_tcti_device.h>
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namespace cuttlefish {
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static void FinalizeTcti(TSS2_TCTI_CONTEXT* tcti_context) {
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if (tcti_context == nullptr) {
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return;
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}
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auto finalize_fn = TSS2_TCTI_FINALIZE(tcti_context);
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if (finalize_fn != nullptr) {
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finalize_fn(tcti_context);
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}
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delete[] (char*) tcti_context;
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}
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DeviceTpm::DeviceTpm(const std::string& path) : tpm_(nullptr, &FinalizeTcti) {
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size_t size = 0;
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auto rc = Tss2_Tcti_Device_Init(nullptr, &size, path.c_str());
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if (rc != TSS2_RC_SUCCESS) {
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LOG(ERROR) << "Could not get Device TCTI size: " << Tss2_RC_Decode(rc)
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<< "(" << rc << ")";
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return;
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}
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tpm_.reset(reinterpret_cast<TSS2_TCTI_CONTEXT*>(new char[size]));
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rc = Tss2_Tcti_Device_Init(tpm_.get(), &size, path.c_str());
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if (rc != TSS2_RC_SUCCESS) {
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LOG(ERROR) << "Could not create Device TCTI: " << Tss2_RC_Decode(rc)
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<< "(" << rc << ")";
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delete[] (char*) tpm_.release();
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return;
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}
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}
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TSS2_TCTI_CONTEXT* DeviceTpm::TctiContext() {
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return tpm_.get();
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}
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} // namespace cuttlefish
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