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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/api/file_handlers/directory_util.h"
#include <memory>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/thread_pool.h"
#include "build/chromeos_buildflags.h"
#include "content/public/browser/browser_context.h"
#include "net/base/filename_util.h"
#include "storage/browser/file_system/file_system_url.h"
#if BUILDFLAG(IS_CHROMEOS)
#include "extensions/browser/api/extensions_api_client.h"
#include "extensions/browser/api/file_handlers/non_native_file_system_delegate.h"
#endif
namespace extensions::app_file_handler_util {
namespace {
bool GetIsDirectoryFromFileInfo(const base::FilePath& path) {
base::File::Info file_info;
return GetFileInfo(path, &file_info) && file_info.is_directory;
}
} // namespace
// The callback parameter contains the result and is required to support
// both native local directories to avoid UI thread and non native local
// path directories for the IsNonNativeLocalPathDirectory API.
void GetIsDirectoryForLocalPath(content::BrowserContext* context,
const base::FilePath& path,
base::OnceCallback<void(bool)> callback) {
#if BUILDFLAG(IS_CHROMEOS)
NonNativeFileSystemDelegate* delegate =
ExtensionsAPIClient::Get()->GetNonNativeFileSystemDelegate();
if (delegate && delegate->IsUnderNonNativeLocalPath(context, path)) {
delegate->IsNonNativeLocalPathDirectory(context, path, std::move(callback));
return;
}
#endif
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock()},
base::BindOnce(&GetIsDirectoryFromFileInfo, path), std::move(callback));
}
IsDirectoryCollector::IsDirectoryCollector(content::BrowserContext* context)
: context_(context), left_(0) {}
IsDirectoryCollector::~IsDirectoryCollector() = default;
void IsDirectoryCollector::CollectForEntriesPaths(
const std::vector<base::FilePath>& paths,
CompletionCallback callback) {
DCHECK(!callback.is_null());
paths_ = paths;
callback_ = std::move(callback);
DCHECK(!result_.get());
result_ = std::make_unique<std::set<base::FilePath>>();
left_ = paths.size();
if (!left_) {
// Nothing to process.
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback_), std::move(result_)));
callback_.Reset();
return;
}
for (size_t i = 0; i < paths.size(); ++i) {
GetIsDirectoryForLocalPath(
context_, paths[i],
base::BindOnce(&IsDirectoryCollector::OnIsDirectoryCollected,
weak_ptr_factory_.GetWeakPtr(), i));
}
}
void IsDirectoryCollector::OnIsDirectoryCollected(size_t index,
bool is_directory) {
if (is_directory) {
result_->insert(paths_[index]);
}
if (!--left_) {
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback_), std::move(result_)));
// Release the callback to avoid a circullar reference in case an instance
// of this class is a member of a ref counted class, which instance is bound
// to this callback.
callback_.Reset();
}
}
} // namespace extensions::app_file_handler_util
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