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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 "components/offline_pages/core/archive_manager.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/utf_string_conversions.h"
#include "base/system/sys_info.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
namespace offline_pages {
namespace {
using StorageStatsCallback =
base::OnceCallback<void(const ArchiveManager::StorageStats& storage_stats)>;
void EnsureArchivesDirCreatedImpl(const base::FilePath& archives_dir,
bool is_temp) {
base::File::Error error = base::File::FILE_OK;
if (!base::DirectoryExists(archives_dir)) {
if (!base::CreateDirectoryAndGetError(archives_dir, &error)) {
LOG(ERROR) << "Failed to create offline pages archive directory: "
<< base::File::ErrorToString(error);
}
}
}
void GetStorageStatsImpl(const base::FilePath& temporary_archives_dir,
const base::FilePath& private_archives_dir,
const base::FilePath& public_archives_dir,
scoped_refptr<base::SequencedTaskRunner> task_runner,
StorageStatsCallback callback) {
ArchiveManager::StorageStats storage_stats = {0, 0, 0, 0, 0};
// Getting the free disk space of the volume that contains the temporary
// archives directory. This value will be -1 if the directory is invalid.
// Currently both temporary and private archive directories are in the
// internal storage.
storage_stats.internal_free_disk_space =
base::SysInfo::AmountOfFreeDiskSpace(temporary_archives_dir);
storage_stats.external_free_disk_space =
base::SysInfo::AmountOfFreeDiskSpace(public_archives_dir);
if (!temporary_archives_dir.empty()) {
storage_stats.temporary_archives_size =
base::ComputeDirectorySize(temporary_archives_dir);
}
if (!private_archives_dir.empty()) {
storage_stats.private_archives_size =
base::ComputeDirectorySize(private_archives_dir);
}
if (!public_archives_dir.empty()) {
base::FileEnumerator file_enumerator(public_archives_dir, false,
base::FileEnumerator::FILES);
while (!file_enumerator.Next().empty()) {
#if BUILDFLAG(IS_WIN)
std::string extension = base::WideToUTF8(
file_enumerator.GetInfo().GetName().FinalExtension());
#else
std::string extension =
file_enumerator.GetInfo().GetName().FinalExtension();
#endif
if (extension == "mhtml" || extension == "mht") {
storage_stats.public_archives_size +=
file_enumerator.GetInfo().GetSize();
}
}
}
task_runner->PostTask(FROM_HERE,
base::BindOnce(std::move(callback), storage_stats));
}
} // namespace
// protected and used for testing.
ArchiveManager::ArchiveManager() = default;
ArchiveManager::ArchiveManager(
const base::FilePath& temporary_archives_dir,
const base::FilePath& private_archives_dir,
const base::FilePath& public_archives_dir,
const scoped_refptr<base::SequencedTaskRunner>& task_runner)
: temporary_archives_dir_(temporary_archives_dir),
private_archives_dir_(private_archives_dir),
public_archives_dir_(public_archives_dir),
task_runner_(task_runner) {}
ArchiveManager::~ArchiveManager() = default;
void ArchiveManager::EnsureArchivesDirCreated(
base::OnceCallback<void()> callback) {
// The callback will only be invoked once both directories are created.
if (!temporary_archives_dir_.empty()) {
task_runner_->PostTask(
FROM_HERE, base::BindOnce(EnsureArchivesDirCreatedImpl,
temporary_archives_dir_, true /* is_temp */));
}
task_runner_->PostTaskAndReply(
FROM_HERE,
base::BindOnce(EnsureArchivesDirCreatedImpl, private_archives_dir_,
false /* is_temp */),
std::move(callback));
}
void ArchiveManager::GetStorageStats(StorageStatsCallback callback) const {
task_runner_->PostTask(
FROM_HERE,
base::BindOnce(GetStorageStatsImpl, temporary_archives_dir_,
private_archives_dir_, public_archives_dir_,
base::SingleThreadTaskRunner::GetCurrentDefault(),
std::move(callback)));
}
const base::FilePath& ArchiveManager::GetTemporaryArchivesDir() const {
return temporary_archives_dir_;
}
const base::FilePath& ArchiveManager::GetPrivateArchivesDir() const {
return private_archives_dir_;
}
const base::FilePath& ArchiveManager::GetPublicArchivesDir() {
return public_archives_dir_;
}
} // namespace offline_pages
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