79 lines
2 KiB
C++
79 lines
2 KiB
C++
//
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// Copyright (C) 2014 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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//
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#include "trunks/scoped_key_handle.h"
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#include <base/logging.h>
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#include "trunks/error_codes.h"
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namespace {
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const trunks::TPM_HANDLE kInvalidHandle = 0;
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} // namespace
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namespace trunks {
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ScopedKeyHandle::ScopedKeyHandle(const TrunksFactory& factory)
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: factory_(factory), handle_(kInvalidHandle) {}
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ScopedKeyHandle::ScopedKeyHandle(const TrunksFactory& factory,
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TPM_HANDLE handle)
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: factory_(factory), handle_(handle) {}
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ScopedKeyHandle::~ScopedKeyHandle() {
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if (handle_ != kInvalidHandle) {
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FlushHandleContext(handle_);
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}
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}
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TPM_HANDLE ScopedKeyHandle::release() {
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TPM_HANDLE tmp_handle = handle_;
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handle_ = kInvalidHandle;
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return tmp_handle;
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}
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void ScopedKeyHandle::reset(TPM_HANDLE new_handle) {
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TPM_HANDLE tmp_handle = handle_;
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handle_ = new_handle;
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if (tmp_handle != kInvalidHandle) {
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FlushHandleContext(tmp_handle);
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}
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}
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void ScopedKeyHandle::reset() {
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reset(kInvalidHandle);
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}
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TPM_HANDLE* ScopedKeyHandle::ptr() {
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return &handle_;
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}
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TPM_HANDLE ScopedKeyHandle::get() const {
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return handle_;
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}
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void ScopedKeyHandle::FlushHandleContext(TPM_HANDLE handle) {
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TPM_RC result = TPM_RC_SUCCESS;
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result = factory_.GetTpm()->FlushContextSync(handle, nullptr);
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if (result) {
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LOG(WARNING) << "Error closing handle: " << handle << " : "
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<< GetErrorString(result);
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}
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}
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} // namespace trunks
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