You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.0 KiB
79 lines
2.0 KiB
// |
|
// Copyright (C) 2014 The Android Open Source Project |
|
// |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// http://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
// |
|
|
|
#include "trunks/scoped_key_handle.h" |
|
|
|
#include <base/logging.h> |
|
|
|
#include "trunks/error_codes.h" |
|
|
|
namespace { |
|
|
|
const trunks::TPM_HANDLE kInvalidHandle = 0; |
|
|
|
} // namespace |
|
|
|
namespace trunks { |
|
|
|
ScopedKeyHandle::ScopedKeyHandle(const TrunksFactory& factory) |
|
: factory_(factory), handle_(kInvalidHandle) {} |
|
|
|
ScopedKeyHandle::ScopedKeyHandle(const TrunksFactory& factory, |
|
TPM_HANDLE handle) |
|
: factory_(factory), handle_(handle) {} |
|
|
|
ScopedKeyHandle::~ScopedKeyHandle() { |
|
if (handle_ != kInvalidHandle) { |
|
FlushHandleContext(handle_); |
|
} |
|
} |
|
|
|
TPM_HANDLE ScopedKeyHandle::release() { |
|
TPM_HANDLE tmp_handle = handle_; |
|
handle_ = kInvalidHandle; |
|
return tmp_handle; |
|
} |
|
|
|
void ScopedKeyHandle::reset(TPM_HANDLE new_handle) { |
|
TPM_HANDLE tmp_handle = handle_; |
|
handle_ = new_handle; |
|
if (tmp_handle != kInvalidHandle) { |
|
FlushHandleContext(tmp_handle); |
|
} |
|
} |
|
|
|
void ScopedKeyHandle::reset() { |
|
reset(kInvalidHandle); |
|
} |
|
|
|
TPM_HANDLE* ScopedKeyHandle::ptr() { |
|
return &handle_; |
|
} |
|
|
|
TPM_HANDLE ScopedKeyHandle::get() const { |
|
return handle_; |
|
} |
|
|
|
void ScopedKeyHandle::FlushHandleContext(TPM_HANDLE handle) { |
|
TPM_RC result = TPM_RC_SUCCESS; |
|
result = factory_.GetTpm()->FlushContextSync(handle, nullptr); |
|
if (result) { |
|
LOG(WARNING) << "Error closing handle: " << handle << " : " |
|
<< GetErrorString(result); |
|
} |
|
} |
|
|
|
} // namespace trunks
|
|
|