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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 "chrome/browser/ash/file_manager/fusebox_daemon.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/no_destructor.h"
#include "base/system/sys_info.h"
#include "chrome/browser/ash/fusebox/fusebox_server.h"
namespace file_manager {
// static
scoped_refptr<FuseBoxDaemon> FuseBoxDaemon::GetInstance() {
static base::NoDestructor<base::WeakPtr<FuseBoxDaemon>> daemon;
scoped_refptr<FuseBoxDaemon> p = daemon->get();
if (!p) {
p = new FuseBoxDaemon();
*daemon = p->weak_ptr_factory_.GetWeakPtr();
}
return p;
}
FuseBoxDaemon::FuseBoxDaemon() {
cros_disks_mount_manager_ = CrosDisksMountManager::GetInstance();
if (!cros_disks_mount_manager_) {
return; // cros_disks_mount_manager_ can be null in unit_tests.
}
constexpr auto type = ash::MountType::kNetworkStorage;
constexpr auto mode = ash::MountAccessMode::kReadWrite;
cros_disks_mount_manager_->MountPath(
CrosDisksFuseBoxHelperURI(),
/*source_format*/ {},
/*mount_label*/ {},
/*options*/ {/* add fusebox --flags here */}, type, mode,
base::BindOnce(&FuseBoxDaemon::MountResponse,
weak_ptr_factory_.GetWeakPtr()));
}
void FuseBoxDaemon::MountResponse(ash::MountError error,
const FuseBoxMountInfo& info) {
if (error == ash::MountError::kSuccess) {
mounted_ = true;
} else {
if (base::SysInfo::IsRunningOnChromeOS()) {
LOG(ERROR) << CrosDisksFuseBoxHelperURI() << " mount error " << error;
}
mounted_ = (error == ash::MountError::kPathAlreadyMounted);
}
if (mounted_ && !pending_attach_storage_calls_.empty()) {
const auto queued = pending_attach_storage_calls_.size();
VLOG(1) << "Calling " << queued << " queued AttachStorage calls";
for (const auto& it : pending_attach_storage_calls_) {
const auto& [url, read_only] = it.second;
AttachStorage(it.first, url, read_only);
}
}
pending_attach_storage_calls_.clear();
}
void FuseBoxDaemon::AttachStorage(const std::string& subdir,
const std::string& url,
bool read_only) {
if (!mounted_) {
VLOG(1) << "FuseBox is not mounted: queued AttachStorage call";
pending_attach_storage_calls_.emplace(subdir, std::pair{url, read_only});
return;
}
if (auto* fusebox_server = fusebox::Server::GetInstance()) {
fusebox_server->RegisterFSURLPrefix(subdir, url, read_only);
} else {
VLOG(1) << "No FuseBox server available for AttachStorage";
}
}
void FuseBoxDaemon::DetachStorage(const std::string& subdir) {
if (!mounted_) {
VLOG(1) << "Fusebox is not mounted, removing queued AttachStorage call";
pending_attach_storage_calls_.erase(subdir);
return;
}
if (auto* fusebox_server = fusebox::Server::GetInstance()) {
fusebox_server->UnregisterFSURLPrefix(subdir);
} else {
VLOG(1) << "No FuseBox server available for DetachStorage";
}
}
FuseBoxDaemon::~FuseBoxDaemon() {
if (!cros_disks_mount_manager_) {
return; // cros_disks_mount_manager_ can be null in unit_tests.
}
cros_disks_mount_manager_->UnmountPath(CrosDisksFuseBoxHelperURI(),
base::DoNothing());
}
} // namespace file_manager
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