83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
// Copyright (c) 2014 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/common/asar/scoped_temporary_file.h"
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#include <vector>
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#include "base/files/file_util.h"
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#include "base/logging.h"
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#include "shell/common/asar/asar_util.h"
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#include "shell/common/thread_restrictions.h"
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namespace asar {
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ScopedTemporaryFile::ScopedTemporaryFile() = default;
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ScopedTemporaryFile::~ScopedTemporaryFile() {
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if (!path_.empty()) {
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electron::ScopedAllowBlockingForElectron allow_blocking;
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// On Windows it is very likely the file is already in use (because it is
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// mostly used for Node native modules), so deleting it now will halt the
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// program.
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#if BUILDFLAG(IS_WIN)
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base::DeleteFileAfterReboot(path_);
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#else
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base::DeleteFile(path_);
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#endif
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}
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}
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bool ScopedTemporaryFile::Init(const base::FilePath::StringType& ext) {
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if (!path_.empty())
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return true;
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electron::ScopedAllowBlockingForElectron allow_blocking;
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if (!base::CreateTemporaryFile(&path_))
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return false;
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#if BUILDFLAG(IS_WIN)
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// Keep the original extension.
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if (!ext.empty()) {
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base::FilePath new_path = path_.AddExtension(ext);
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if (!base::Move(path_, new_path))
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return false;
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path_ = new_path;
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}
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#endif
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return true;
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}
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bool ScopedTemporaryFile::InitFromFile(
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base::File* src,
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const base::FilePath::StringType& ext,
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uint64_t offset,
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uint64_t size,
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const std::optional<IntegrityPayload>& integrity) {
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if (!src->IsValid())
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return false;
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if (!Init(ext))
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return false;
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electron::ScopedAllowBlockingForElectron allow_blocking;
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std::vector<char> buf(size);
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int len = src->Read(offset, buf.data(), buf.size());
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if (len != static_cast<int>(size))
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return false;
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if (integrity.has_value()) {
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ValidateIntegrityOrDie(buf.data(), buf.size(), integrity.value());
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}
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base::File dest(path_, base::File::FLAG_OPEN | base::File::FLAG_WRITE);
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if (!dest.IsValid())
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return false;
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return dest.WriteAtCurrentPos(buf.data(), buf.size()) ==
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static_cast<int>(size);
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}
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} // namespace asar
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