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// Copyright 2021 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/device_name/device_name_store_impl.h"
#include "base/logging.h"
#include "chrome/browser/ash/device_name/device_name_applier_impl.h"
#include "chrome/browser/ash/device_name/device_name_validator.h"
#include "chrome/browser/ash/ownership/owner_settings_service_ash.h"
#include "chrome/browser/ash/ownership/owner_settings_service_ash_factory.h"
#include "chrome/browser/browser_process.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/browser_thread.h"
namespace ash {
namespace {
const char kDefaultDeviceName[] = "ChromeOS";
} // namespace
DeviceNameStoreImpl::DeviceNameStoreImpl(
PrefService* prefs,
policy::DeviceNamePolicyHandler* handler)
: DeviceNameStoreImpl(prefs,
handler,
std::make_unique<DeviceNameApplierImpl>()) {}
DeviceNameStoreImpl::DeviceNameStoreImpl(
PrefService* prefs,
policy::DeviceNamePolicyHandler* handler,
std::unique_ptr<DeviceNameApplier> device_name_applier)
: prefs_(prefs),
handler_(handler),
device_name_applier_(std::move(device_name_applier)) {
policy_handler_observation_.Observe(handler_.get());
if (g_browser_process->profile_manager())
profile_manager_observer_.Observe(g_browser_process->profile_manager());
// Gets the device name according to the device name policy set. If empty, the
// name in prefs is not set yet and hence we set it to the default name.
std::string device_name = ComputeDeviceName();
if (device_name.empty())
device_name = kDefaultDeviceName;
device_name_state_ = ComputeDeviceNameState();
ChangeDeviceName(device_name);
}
DeviceNameStoreImpl::~DeviceNameStoreImpl() = default;
std::string DeviceNameStoreImpl::GetDeviceName() const {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
DCHECK(prefs_);
return prefs_->GetString(prefs::kDeviceName);
}
DeviceNameStore::DeviceNameMetadata DeviceNameStoreImpl::GetDeviceNameMetadata()
const {
return {GetDeviceName(), device_name_state_};
}
DeviceNameStore::DeviceNameState DeviceNameStoreImpl::ComputeDeviceNameState()
const {
if (IsConfiguringDeviceNameProhibitedByPolicy())
return DeviceNameState::kCannotBeModifiedBecauseOfPolicy;
if (CannotModifyBecauseNotDeviceOwner())
return DeviceNameState::kCannotBeModifiedBecauseNotDeviceOwner;
return DeviceNameState::kCanBeModified;
}
bool DeviceNameStoreImpl::CannotModifyBecauseNotDeviceOwner() const {
// If kNoPolicy is not in place, then the device is managed and user does not
// have to be device owner to be able to change the name.
if (handler_->GetDeviceNamePolicy() !=
policy::DeviceNamePolicyHandler::DeviceNamePolicy::kNoPolicy) {
return false;
}
// If device is unmanaged, then user has to be the device owner to be able to
// change the name.
if (is_user_owner_)
return false;
return true;
}
bool DeviceNameStoreImpl::IsConfiguringDeviceNameProhibitedByPolicy() const {
switch (handler_->GetDeviceNamePolicy()) {
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::
kPolicyHostnameNotConfigurable:
[[fallthrough]];
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::
kPolicyHostnameChosenByAdmin:
return true;
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::
kPolicyHostnameConfigurableByManagedUser:
[[fallthrough]];
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::kNoPolicy:
return false;
}
}
void DeviceNameStoreImpl::ChangeDeviceName(const std::string& device_name) {
device_name_applier_->SetDeviceName(device_name);
prefs_->SetString(prefs::kDeviceName, device_name);
}
void DeviceNameStoreImpl::AttemptDeviceNameUpdate(
const std::string& new_device_name) {
std::string old_device_name = GetDeviceName();
DeviceNameStore::DeviceNameState new_state = ComputeDeviceNameState();
if (old_device_name == new_device_name && device_name_state_ == new_state)
return;
if (old_device_name != new_device_name)
ChangeDeviceName(new_device_name);
device_name_state_ = new_state;
NotifyDeviceNameMetadataChanged();
}
DeviceNameStore::SetDeviceNameResult DeviceNameStoreImpl::SetDeviceName(
const std::string& new_device_name) {
if (device_name_state_ == DeviceNameState::kCannotBeModifiedBecauseOfPolicy)
return SetDeviceNameResult::kProhibitedByPolicy;
if (device_name_state_ ==
DeviceNameState::kCannotBeModifiedBecauseNotDeviceOwner)
return SetDeviceNameResult::kNotDeviceOwner;
if (!IsValidDeviceName(new_device_name))
return SetDeviceNameResult::kInvalidName;
AttemptDeviceNameUpdate(new_device_name);
return SetDeviceNameResult::kSuccess;
}
std::string DeviceNameStoreImpl::ComputeDeviceName() const {
switch (handler_->GetDeviceNamePolicy()) {
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::
kPolicyHostnameChosenByAdmin:
return *handler_->GetHostnameChosenByAdministrator();
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::
kPolicyHostnameNotConfigurable:
return kDefaultDeviceName;
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::
kPolicyHostnameConfigurableByManagedUser:
return GetDeviceName();
case policy::DeviceNamePolicyHandler::DeviceNamePolicy::kNoPolicy:
return GetDeviceName();
}
}
void DeviceNameStoreImpl::AttemptUpdateToComputedDeviceName() {
AttemptDeviceNameUpdate(ComputeDeviceName());
}
void DeviceNameStoreImpl::OnHostnamePolicyChanged() {
AttemptUpdateToComputedDeviceName();
}
void DeviceNameStoreImpl::AttemptDeviceNameStateUpdate(bool is_user_owner) {
is_user_owner_ = is_user_owner;
AttemptUpdateToComputedDeviceName();
}
void DeviceNameStoreImpl::OnProfileAdded(Profile* profile) {
DCHECK(profile);
OwnerSettingsServiceAsh* service =
OwnerSettingsServiceAshFactory::GetForBrowserContext(profile);
if (service) {
service->IsOwnerAsync(
base::BindOnce(&DeviceNameStoreImpl::AttemptDeviceNameStateUpdate,
weak_factory_.GetWeakPtr()));
} else {
VLOG(1) << "Owner settings service unavailable for added profile, will "
"not update device name state.";
}
}
void DeviceNameStoreImpl::OnProfileManagerDestroying() {
profile_manager_observer_.Reset();
}
} // namespace ash
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