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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/arc/session/arc_data_remover.h"
#include <utility>
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/logging.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/debug_daemon_client.h"
#include "chromeos/dbus/upstart/upstart_client.h"
#include "components/arc/arc_prefs.h"
#include "components/arc/arc_util.h"
namespace arc {
namespace {
chromeos::ConciergeClient* GetConciergeClient() {
return chromeos::DBusThreadManager::Get()->GetConciergeClient();
}
} // namespace
// The conversion of upstart job names to dbus object paths is undocumented. See
// function nih_dbus_path in libnih for the implementation.
constexpr char kArcRemoveDataUpstartJob[] = "arc_2dremove_2ddata";
ArcDataRemover::ArcDataRemover(PrefService* prefs,
const cryptohome::Identification& cryptohome_id)
: cryptohome_id_(cryptohome_id), weak_factory_(this) {
pref_.Init(prefs::kArcDataRemoveRequested, prefs);
}
ArcDataRemover::~ArcDataRemover() = default;
void ArcDataRemover::Schedule() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
pref_.SetValue(true);
}
bool ArcDataRemover::IsScheduledForTesting() const {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
return pref_.GetValue();
}
void ArcDataRemover::Run(RunCallback callback) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (!pref_.GetValue()) {
// Data removal is not scheduled.
std::move(callback).Run(base::nullopt);
return;
}
// TODO(yusukes): Stop special-casing ARCVM once we use virtio-fs for
// exporting /data.
if (IsArcVmEnabled()) {
VLOG(1) << "Starting ARCVM data removal";
chromeos::DBusThreadManager::Get()->GetDebugDaemonClient()->StartConcierge(
base::BindOnce(&ArcDataRemover::OnConciergeStarted,
weak_factory_.GetWeakPtr(), std::move(callback)));
return;
}
VLOG(1) << "Starting ARC data removal";
auto* upstart_client = chromeos::UpstartClient::Get();
if (!upstart_client) {
// May be null in tests
std::move(callback).Run(base::nullopt);
return;
}
const std::string account_id =
cryptohome::CreateAccountIdentifierFromIdentification(cryptohome_id_)
.account_id();
upstart_client->StartJob(
kArcRemoveDataUpstartJob, {"CHROMEOS_USER=" + account_id},
base::AdaptCallbackForRepeating(
base::BindOnce(&ArcDataRemover::OnDataRemoved,
weak_factory_.GetWeakPtr(), std::move(callback))));
}
void ArcDataRemover::OnDataRemoved(RunCallback callback, bool success) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (success) {
VLOG(1) << "ARC data removal successful";
} else {
LOG(ERROR) << "Request for ARC user data removal failed. "
<< "See upstart logs for more details.";
}
pref_.SetValue(false);
std::move(callback).Run(success);
}
void ArcDataRemover::OnConciergeStarted(RunCallback callback, bool success) {
if (!success) {
LOG(ERROR) << "Failed to start Concierge service for arcvm";
OnDataRemoved(std::move(callback), false);
return;
}
vm_tools::concierge::DestroyDiskImageRequest request;
request.set_cryptohome_id(user_id_hash_);
request.set_disk_path(kArcVmName);
GetConciergeClient()->DestroyDiskImage(
std::move(request),
base::BindOnce(&ArcDataRemover::OnDiskImageDestroyed,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void ArcDataRemover::OnDiskImageDestroyed(
RunCallback callback,
base::Optional<vm_tools::concierge::DestroyDiskImageResponse> reply) {
if (!reply) {
LOG(ERROR) << "Failed to destroy disk image. Empty response.";
OnDataRemoved(std::move(callback), false);
return;
}
if (reply->status() != vm_tools::concierge::DISK_STATUS_DESTROYED) {
LOG(ERROR) << "Failed to destroy disk image: " << reply->failure_reason();
OnDataRemoved(std::move(callback), false);
return;
}
OnDataRemoved(std::move(callback), true);
}
} // namespace arc
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