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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/file_access/scoped_file_access_delegate.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "components/file_access/scoped_file_access.h"
namespace file_access {
// static
ScopedFileAccessDelegate* ScopedFileAccessDelegate::Get() {
return scoped_file_access_delegate_;
}
// static
bool ScopedFileAccessDelegate::HasInstance() {
return scoped_file_access_delegate_;
}
// static
void ScopedFileAccessDelegate::DeleteInstance() {
if (scoped_file_access_delegate_) {
delete scoped_file_access_delegate_;
scoped_file_access_delegate_ = nullptr;
}
}
// static
void ScopedFileAccessDelegate::RequestDefaultFilesAccessIO(
const std::vector<base::FilePath>& files,
base::OnceCallback<void(ScopedFileAccess)> callback) {
if (request_files_access_for_system_io_callback_) {
request_files_access_for_system_io_callback_->Run(
files, std::move(callback), /*check_default=*/true);
} else {
std::move(callback).Run(ScopedFileAccess::Allowed());
}
}
// static
void ScopedFileAccessDelegate::RequestFilesAccessForSystemIO(
const std::vector<base::FilePath>& files,
base::OnceCallback<void(ScopedFileAccess)> callback) {
if (request_files_access_for_system_io_callback_) {
request_files_access_for_system_io_callback_->Run(
files, std::move(callback), /*check_default=*/false);
} else {
std::move(callback).Run(ScopedFileAccess::Allowed());
}
}
// static
ScopedFileAccessDelegate::RequestFilesAccessIOCallback
ScopedFileAccessDelegate::GetCallbackForSystem() {
return base::BindRepeating(
[](const std::vector<base::FilePath>& file_paths,
base::OnceCallback<void(ScopedFileAccess)> callback) {
if (request_files_access_for_system_io_callback_) {
request_files_access_for_system_io_callback_->Run(
file_paths, std::move(callback), /*check_default=*/false);
} else {
std::move(callback).Run(ScopedFileAccess::Allowed());
}
});
}
ScopedFileAccessDelegate::ScopedFileAccessDelegate() {
if (scoped_file_access_delegate_) {
delete scoped_file_access_delegate_;
}
scoped_file_access_delegate_ = this;
}
ScopedFileAccessDelegate::~ScopedFileAccessDelegate() {
if (scoped_file_access_delegate_ == this) {
scoped_file_access_delegate_ = nullptr;
}
}
// static
ScopedFileAccessDelegate*
ScopedFileAccessDelegate::scoped_file_access_delegate_ = nullptr;
// static
ScopedFileAccessDelegate::RequestFilesAccessCheckDefaultCallback*
ScopedFileAccessDelegate::request_files_access_for_system_io_callback_ =
nullptr;
ScopedFileAccessDelegate::ScopedRequestFilesAccessCallbackForTesting::
ScopedRequestFilesAccessCallbackForTesting(
RequestFilesAccessIOCallback callback,
bool restore_original_callback)
: restore_original_callback_(restore_original_callback) {
original_callback_ =
base::WrapUnique(request_files_access_for_system_io_callback_);
request_files_access_for_system_io_callback_ =
new RequestFilesAccessCheckDefaultCallback(base::BindRepeating(
[](RequestFilesAccessIOCallback callback,
const std::vector<base::FilePath>& files,
base::OnceCallback<void(ScopedFileAccess)> cb,
bool check_default) { callback.Run(files, std::move(cb)); },
std::move(callback)));
}
ScopedFileAccessDelegate::ScopedRequestFilesAccessCallbackForTesting::
~ScopedRequestFilesAccessCallbackForTesting() {
if (request_files_access_for_system_io_callback_) {
delete request_files_access_for_system_io_callback_;
}
if (!restore_original_callback_ && original_callback_) {
original_callback_.reset();
}
request_files_access_for_system_io_callback_ = original_callback_.release();
}
void ScopedFileAccessDelegate::ScopedRequestFilesAccessCallbackForTesting::
RunOriginalCallback(
const std::vector<base::FilePath>& path,
base::OnceCallback<void(file_access::ScopedFileAccess)> callback) {
original_callback_->Run(path, std::move(callback), /*check_default=*/false);
}
void RequestFilesAccess(
const std::vector<base::FilePath>& files,
const GURL& destination_url,
base::OnceCallback<void(file_access::ScopedFileAccess)> callback) {
if (ScopedFileAccessDelegate::HasInstance()) {
ScopedFileAccessDelegate::Get()->RequestFilesAccess(files, destination_url,
std::move(callback));
} else {
std::move(callback).Run(ScopedFileAccess::Allowed());
}
}
void RequestFilesAccessForSystem(
const std::vector<base::FilePath>& files,
base::OnceCallback<void(file_access::ScopedFileAccess)> callback) {
if (ScopedFileAccessDelegate::HasInstance()) {
ScopedFileAccessDelegate::Get()->RequestFilesAccessForSystem(
files, std::move(callback));
} else {
std::move(callback).Run(ScopedFileAccess::Allowed());
}
}
ScopedFileAccessDelegate::RequestFilesAccessIOCallback CreateFileAccessCallback(
const GURL& destination) {
if (ScopedFileAccessDelegate::HasInstance()) {
return ScopedFileAccessDelegate::Get()->CreateFileAccessCallback(
destination);
}
return base::BindRepeating(
[](const GURL& destination, const std::vector<base::FilePath>& files,
base::OnceCallback<void(file_access::ScopedFileAccess)> callback) {
std::move(callback).Run(file_access::ScopedFileAccess::Allowed());
},
destination);
}
} // namespace file_access
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