// Copyright 2020 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/crosapi/browser_manager.h"
#include <fcntl.h>
#include <unistd.h>
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include <string_view>
#include <utility>
#include <vector>
#include "ash/constants/ash_features.h"
#include "ash/constants/ash_switches.h"
#include "ash/public/cpp/notification_utils.h"
#include "ash/strings/grit/ash_strings.h"
#include "ash/wm/desks/desks_util.h"
#include "base/base_switches.h"
#include "base/check.h"
#include "base/check_is_test.h"
#include "base/command_line.h"
#include "base/debug/dump_without_crashing.h"
#include "base/environment.h"
#include "base/feature_list.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/platform_file.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/json/json_file_value_serializer.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/memory/weak_ptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/notreached.h"
#include "base/path_service.h"
#include "base/posix/eintr_wrapper.h"
#include "base/process/launch.h"
#include "base/process/process_handle.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/stringprintf.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/threading/thread_restrictions.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
#include "chrome/browser/ash/crosapi/browser_action.h"
#include "chrome/browser/ash/crosapi/browser_data_back_migrator.h"
#include "chrome/browser/ash/crosapi/browser_data_migrator.h"
#include "chrome/browser/ash/crosapi/browser_data_migrator_util.h"
#include "chrome/browser/ash/crosapi/browser_launcher.h"
#include "chrome/browser/ash/crosapi/browser_loader.h"
#include "chrome/browser/ash/crosapi/browser_service_host_ash.h"
#include "chrome/browser/ash/crosapi/browser_util.h"
#include "chrome/browser/ash/crosapi/crosapi_ash.h"
#include "chrome/browser/ash/crosapi/crosapi_manager.h"
#include "chrome/browser/ash/crosapi/crosapi_util.h"
#include "chrome/browser/ash/crosapi/desk_template_ash.h"
#include "chrome/browser/ash/crosapi/files_app_launcher.h"
#include "chrome/browser/ash/crosapi/test_mojo_connection_manager.h"
#include "chrome/browser/ash/policy/core/browser_policy_connector_ash.h"
#include "chrome/browser/ash/policy/core/device_local_account_policy_service.h"
#include "chrome/browser/ash/policy/core/user_cloud_policy_manager_ash.h"
#include "chrome/browser/ash/profiles/profile_helper.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_process_platform_part_ash.h"
#include "chrome/browser/notifications/system_notification_helper.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/ash/shelf/chrome_shelf_controller.h"
#include "chrome/browser/web_applications/user_uninstalled_preinstalled_web_app_prefs.h"
#include "chrome/common/chrome_features.h"
#include "chrome/common/chrome_paths.h"
#include "chromeos/ash/components/browser_context_helper/browser_context_helper.h"
#include "chromeos/ash/components/standalone_browser/browser_support.h"
#include "chromeos/ash/components/standalone_browser/channel_util.h"
#include "chromeos/ash/components/standalone_browser/lacros_selection.h"
#include "chromeos/ash/components/standalone_browser/migrator_util.h"
#include "chromeos/crosapi/cpp/crosapi_constants.h"
#include "chromeos/crosapi/cpp/lacros_startup_state.h"
#include "chromeos/crosapi/mojom/crosapi.mojom-shared.h"
#include "components/account_id/account_id.h"
#include "components/component_updater/ash/component_manager_ash.h"
#include "components/crash/core/common/crash_key.h"
#include "components/feature_engagement/public/tracker.h"
#include "components/nacl/common/buildflags.h"
#include "components/policy/core/common/cloud/cloud_policy_core.h"
#include "components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h"
#include "components/policy/core/common/cloud/cloud_policy_store.h"
#include "components/policy/core/common/cloud/component_cloud_policy_service.h"
#include "components/policy/core/common/values_util.h"
#include "components/policy/proto/device_management_backend.pb.h"
#include "components/prefs/pref_service.h"
#include "components/session_manager/core/session_manager.h"
#include "components/user_manager/device_ownership_waiter.h"
#include "components/user_manager/known_user.h"
#include "components/user_manager/user.h"
#include "components/user_manager/user_manager.h"
#include "components/user_manager/user_type.h"
#include "components/user_prefs/user_prefs.h"
#include "components/version_info/version_info.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/display/screen.h"
#include "ui/message_center/public/cpp/notification_delegate.h"
// TODO(crbug.com/40703689): Currently, this source has log spamming
// by LOG(WARNING) for non critical errors to make it easy
// to debug and develop. Get rid of the log spamming
// when it gets stable enough.
namespace crosapi {
namespace {
// The names of the UMA metrics to track Daily LaunchMode changes.
const char kLacrosLaunchModeDaily[] = "Ash.Lacros.Launch.Mode.Daily";
const char kLacrosLaunchModeAndSourceDaily[] =
"Ash.Lacros.Launch.ModeAndSource.Daily";
// Used to get field data on how much users have migrated to Lacros.
const char kLacrosMigrationStatus[] = "Ash.LacrosMigrationStatus2";
const char kLacrosMigrationStatusDaily[] = "Ash.LacrosMigrationStatus2.Daily";
// The interval at which the daily UMA reporting function should be
// called. De-duping of events will be happening on the server side.
constexpr base::TimeDelta kDailyLaunchModeTimeDelta = base::Minutes(30);
// Pointer to the global instance of BrowserManager.
BrowserManager* g_instance = nullptr;
// Global flag to disable most of BrowserManager for testing.
// Read by the BrowserManager constructor.
bool g_disabled_for_testing = false;
constexpr char kLacrosCannotLaunchNotificationID[] =
"lacros_cannot_launch_notification_id";
constexpr char kLacrosLauncherNotifierID[] = "lacros_launcher";
void SetLaunchOnLoginPref(bool launch_on_login) {
ProfileManager::GetPrimaryUserProfile()->GetPrefs()->SetBoolean(
browser_util::kLaunchOnLoginPref, launch_on_login);
}
bool GetLaunchOnLoginPref() {
return ProfileManager::GetPrimaryUserProfile()->GetPrefs()->GetBoolean(
browser_util::kLaunchOnLoginPref);
}
bool IsKeepAliveDisabledForTesting() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(
ash::switches::kDisableLacrosKeepAliveForTesting);
}
bool IsLoginLacrosOpeningDisabledForTesting() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(
ash::switches::kDisableLoginLacrosOpening);
}
void WarnThatLacrosNotAllowedToLaunch() {
LOG(WARNING) << "Lacros enabled but not allowed to launch";
message_center::Notification notification = ash::CreateSystemNotification(
message_center::NOTIFICATION_TYPE_SIMPLE,
kLacrosCannotLaunchNotificationID,
/*title=*/std::u16string(),
l10n_util::GetStringUTF16(IDS_LACROS_CANNOT_LAUNCH_MULTI_SIGNIN_MESSAGE),
/* display_source= */ std::u16string(), GURL(),
message_center::NotifierId(
message_center::NotifierType::SYSTEM_COMPONENT,
kLacrosLauncherNotifierID,
ash::NotificationCatalogName::kLacrosCannotLaunch),
message_center::RichNotificationData(),
base::MakeRefCounted<message_center::HandleNotificationClickDelegate>(
base::RepeatingClosure()),
gfx::kNoneIcon, message_center::SystemNotificationWarningLevel::NORMAL);
SystemNotificationHelper::GetInstance()->Display(notification);
}
void RecordLacrosEnabledForPrimaryUser(bool enabled) {
const user_manager::User* user =
user_manager::UserManager::Get()->GetPrimaryUser();
user_manager::KnownUser(g_browser_process->local_state())
.SetLacrosEnabled(user->GetAccountId(), enabled);
}
// Returns true if Lacros is enabled for any user, according to the
// KnownUser's LacrosEnabled local state preference.
// This function is used to determine if Lacros should be enabled for prelaunch.
bool IsLacrosEnabledByAnyUserForPrelaunch() {
return user_manager::KnownUser(g_browser_process->local_state())
.GetLacrosEnabledForAnyUser();
}
bool ShouldPrelaunchLacrosAtLoginScreen() {
// Only prelaunch if the corresponding feature is enabled.
if (!base::FeatureList::IsEnabled(browser_util::kLacrosLaunchAtLoginScreen)) {
LOG(WARNING)
<< "Lacros will not be prelaunched: prelaunching feature is disabled";
return false;
}
// If the CPU of the device does not support running Lacros,
// prelaunching should be blocked too.
if (!ash::standalone_browser::BrowserSupport::IsCpuSupported()) {
LOG(WARNING) << "Lacros will not be prelaunched: CPU is not supported";
return false;
}
// We only want to pre-launch Lacros if Ash is launched in login
// manager mode. When the `kLoginUser` switch is passed, we are
// restarting the session for an already logged in user, either in
// production, or after PRE_ tests. In both of those cases, the user
// is already logged in, and we do not want Lacros to prelaunch.
// Originally introduced because of https://crbug.com/1432779, which
// causes PRE_ tests to restart back to login screen, but with the
// user still "logged in" (UserManager::IsUserLoggedIn() == true).
const auto* cmdline = base::CommandLine::ForCurrentProcess();
if (cmdline->HasSwitch(ash::switches::kLoginUser)) {
LOG(WARNING)
<< "Lacros will not be prelaunched: `login-user` switch was passed";
return false;
}
// If Lacros is not enabled for any user, don't prelaunch it, unless
// a switch to force prelaunching was passed.
const bool force_prelaunch = cmdline->HasSwitch(
ash::switches::kForceLacrosLaunchAtLoginScreenForTesting);
if (!force_prelaunch && !IsLacrosEnabledByAnyUserForPrelaunch()) {
LOG(WARNING)
<< "Lacros will not be prelaunched: no user has Lacros enabled";
return false;
}
return true;
}
bool RemoveLacrosUserDataDir() {
const base::FilePath lacros_data_dir = browser_util::GetUserDataDir();
return base::PathExists(lacros_data_dir) &&
base::DeletePathRecursively(lacros_data_dir);
}
// TODO(b/330659545): Investigate why we cannot run this inside
// OnUserProfileCreated.
void PrepareLacrosPolicies(BrowserManager* manager) {
const user_manager::User* user =
user_manager::UserManager::Get()->GetPrimaryUser();
if (!user) {
LOG(ERROR) << "No primary user.";
return;
}
// The lifetime of `BrowserManager` is longer than lifetime of various
// classes, for which we register as an observer below. The RemoveObserver
// function is therefore called in various handlers invoked by those classes
// and not in the destructor.
policy::CloudPolicyCore* core =
browser_util::GetCloudPolicyCoreForUser(*user);
if (core) {
core->AddObserver(manager);
if (core->refresh_scheduler()) {
core->refresh_scheduler()->AddObserver(manager);
}
policy::CloudPolicyStore* store = core->store();
if (store && store->policy_fetch_response()) {
store->AddObserver(manager);
}
}
policy::ComponentCloudPolicyService* component_policy_service =
browser_util::GetComponentCloudPolicyServiceForUser(*user);
if (component_policy_service) {
component_policy_service->AddObserver(manager);
}
}
// The delegate keeps track of the most recent lacros-chrome binary version
// loaded by the BrowserLoader.
// It is the single source of truth for what is the most up-to-date launchable
// version of lacros-chrome. It should be queried when determining if loading a
// more recent lacros-chrome binary should be attempted.
class BrowserVersionServiceDelegate : public BrowserVersionServiceAsh::Delegate,
public BrowserManagerObserver {
public:
BrowserVersionServiceDelegate(
const ComponentUpdateService* component_update_service,
BrowserManager* browser_manager)
: component_update_service_(component_update_service) {
observation_.Observe(browser_manager);
}
BrowserVersionServiceDelegate(const BrowserVersionServiceDelegate&) = delete;
BrowserVersionServiceDelegate& operator=(
const BrowserVersionServiceDelegate&) = delete;
~BrowserVersionServiceDelegate() override = default;
// BrowserVersionServiceAsh::Delegate:
base::Version GetLatestLaunchableBrowserVersion() const override {
// If there is a newer browser available return the version of lacros-chrome
// maintained by the component manager. Otherwise return the current version
// loaded by the manager.
if (IsNewerBrowserAvailable()) {
const auto component_version_number =
ash::standalone_browser::GetInstalledLacrosComponentVersion(
component_update_service_);
CHECK(component_version_number.IsValid());
return component_version_number;
}
return browser_version_loaded_;
}
bool IsNewerBrowserAvailable() const override {
// If the browser loader is not able to load newer stateful component builds
// signal there is no update available.
if (!BrowserLoader::WillLoadStatefulComponentBuilds()) {
return false;
}
const auto component_version_number =
ash::standalone_browser::GetInstalledLacrosComponentVersion(
component_update_service_);
return (!browser_version_loaded_.IsValid() &&
component_version_number.IsValid()) ||
(browser_version_loaded_.IsValid() &&
component_version_number.IsValid() &&
browser_version_loaded_ < component_version_number);
}
// crosapi::BrowserManagerObserver:
void OnLoadComplete(bool success, const base::Version& version) override {
browser_version_loaded_ = version;
}
private:
// Version number of the most recently loaded lacros-chrome browser. This
// can be used for version checking and version comparisons. It is in the
// format of:
// <major_version>.<minor_version>.<build>.<patch>
// For example, "86.0.4240.38".
// Set immediately after lacros has loaded. May be invalid if BrowserLoader
// fails to successfully load a lacros binary.
base::Version browser_version_loaded_;
const raw_ptr<const ComponentUpdateService> component_update_service_;
base::ScopedObservation<BrowserManager, BrowserManagerObserver> observation_{
this};
};
} // namespace
// static
BrowserManager* BrowserManager::Get() {
return g_instance;
}
BrowserManager::BrowserManager(
scoped_refptr<component_updater::ComponentManagerAsh> manager)
: BrowserManager(std::make_unique<BrowserLoader>(manager),
g_browser_process->component_updater()) {}
BrowserManager::BrowserManager(
std::unique_ptr<BrowserLoader> browser_loader,
component_updater::ComponentUpdateService* update_service)
: browser_loader_(std::move(browser_loader)),
launch_at_login_screen_(ShouldPrelaunchLacrosAtLoginScreen()),
disabled_for_testing_(g_disabled_for_testing) {
DCHECK(!g_instance);
g_instance = this;
version_service_delegate_ =
std::make_unique<BrowserVersionServiceDelegate>(update_service, this);
// Wait to query the flag until the user has entered the session. Enterprise
// devices restart Chrome during login to apply flags. We don't want to run
// the flag-off cleanup logic until we know we have the final flag state.
if (session_manager::SessionManager::Get()) {
session_manager::SessionManager::Get()->AddObserver(this);
}
if (ash::SessionManagerClient::Get()) {
ash::SessionManagerClient::Get()->AddObserver(this);
}
if (CrosapiManager::IsInitialized()) {
CrosapiManager::Get()
->crosapi_ash()
->browser_service_host_ash()
->AddObserver(this);
} else {
CHECK_IS_TEST();
}
// UserManager may not be initialized for unit tests.
if (user_manager::UserManager::IsInitialized()) {
user_manager_observation_.Observe(user_manager::UserManager::Get());
}
std::string socket_path =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
ash::switches::kLacrosMojoSocketForTesting);
if (!socket_path.empty()) {
test_mojo_connection_manager_ =
std::make_unique<crosapi::TestMojoConnectionManager>(
base::FilePath(socket_path));
}
}
BrowserManager::~BrowserManager() {
if (CrosapiManager::IsInitialized()) {
CrosapiManager::Get()
->crosapi_ash()
->browser_service_host_ash()
->RemoveObserver(this);
}
// Unregister, just in case the manager is destroyed before
// OnUserSessionStarted() is called.
if (session_manager::SessionManager::Get()) {
session_manager::SessionManager::Get()->RemoveObserver(this);
}
// Try to kill the lacros-chrome binary.
browser_launcher_.TriggerTerminate(/*exit_code=*/0);
SetState(State::WAITING_FOR_MOJO_DISCONNECTED);
DCHECK_EQ(g_instance, this);
g_instance = nullptr;
}
bool BrowserManager::IsRunning() const {
return state_ == State::RUNNING;
}
bool BrowserManager::IsRunningOrWillRun() const {
return state_ == State::RUNNING || state_ == State::STARTING ||
state_ == State::PREPARING_FOR_LAUNCH ||
state_ == State::WAITING_FOR_MOJO_DISCONNECTED ||
state_ == State::WAITING_FOR_PROCESS_TERMINATED;
}
bool BrowserManager::IsInitialized() const {
return state_ != State::NOT_INITIALIZED;
}
void BrowserManager::NewWindow(bool incognito,
bool should_trigger_session_restore) {
int64_t target_display_id =
display::Screen::GetScreen()->GetDisplayForNewWindows().id();
PerformOrEnqueue(BrowserAction::NewWindow(
incognito, should_trigger_session_restore, target_display_id,
ash::desks_util::GetActiveDeskLacrosProfileId()));
}
void BrowserManager::OpenForFullRestore(bool skip_crash_restore) {
PerformOrEnqueue(BrowserAction::OpenForFullRestore(skip_crash_restore));
}
void BrowserManager::NewWindowForDetachingTab(
const std::u16string& tab_id_str,
const std::u16string& group_id_str,
NewWindowForDetachingTabCallback callback) {
PerformOrEnqueue(BrowserAction::NewWindowForDetachingTab(
tab_id_str, group_id_str, std::move(callback)));
}
void BrowserManager::NewFullscreenWindow(const GURL& url,
NewFullscreenWindowCallback callback) {
int64_t target_display_id =
display::Screen::GetScreen()->GetDisplayForNewWindows().id();
PerformOrEnqueue(BrowserAction::NewFullscreenWindow(url, target_display_id,
std::move(callback)));
}
void BrowserManager::NewGuestWindow() {
int64_t target_display_id =
display::Screen::GetScreen()->GetDisplayForNewWindows().id();
PerformOrEnqueue(BrowserAction::NewGuestWindow(target_display_id));
}
void BrowserManager::NewTab() {
PerformOrEnqueue(
BrowserAction::NewTab(ash::desks_util::GetActiveDeskLacrosProfileId()));
}
void BrowserManager::Launch() {
int64_t target_display_id =
display::Screen::GetScreen()->GetDisplayForNewWindows().id();
PerformOrEnqueue(BrowserAction::Launch(
target_display_id, ash::desks_util::GetActiveDeskLacrosProfileId()));
}
void BrowserManager::OpenUrl(
const GURL& url,
crosapi::mojom::OpenUrlFrom from,
crosapi::mojom::OpenUrlParams::WindowOpenDisposition disposition,
NavigateParams::PathBehavior path_behavior) {
PerformOrEnqueue(
BrowserAction::OpenUrl(url, disposition, from, path_behavior));
}
void BrowserManager::OpenCaptivePortalSignin(const GURL& url) {
PerformOrEnqueue(BrowserAction::OpenCaptivePortalSignin(url));
}
void BrowserManager::SwitchToTab(const GURL& url,
NavigateParams::PathBehavior path_behavior) {
PerformOrEnqueue(BrowserAction::OpenUrl(
url, crosapi::mojom::OpenUrlParams::WindowOpenDisposition::kSwitchToTab,
crosapi::mojom::OpenUrlFrom::kUnspecified, path_behavior));
}
void BrowserManager::RestoreTab() {
PerformOrEnqueue(BrowserAction::RestoreTab());
}
void BrowserManager::HandleTabScrubbing(float x_offset,
bool is_fling_scroll_event) {
PerformOrEnqueue(
BrowserAction::HandleTabScrubbing(x_offset, is_fling_scroll_event));
}
void BrowserManager::CreateBrowserWithRestoredData(
const std::vector<GURL>& urls,
const gfx::Rect& bounds,
const std::vector<tab_groups::TabGroupInfo>& tab_group_infos,
ui::WindowShowState show_state,
int32_t active_tab_index,
int32_t first_non_pinned_tab_index,
const std::string& app_name,
int32_t restore_window_id,
uint64_t lacros_profile_id) {
PerformOrEnqueue(BrowserAction::CreateBrowserWithRestoredData(
urls, bounds, tab_group_infos, show_state, active_tab_index,
first_non_pinned_tab_index, app_name, restore_window_id,
lacros_profile_id));
}
void BrowserManager::OpenProfileManager() {
PerformOrEnqueue(BrowserAction::OpenProfileManager());
}
bool BrowserManager::EnsureLaunch() {
// This method can only ensure Lacros's launch if the user profile is already
// initialized.
auto* user = user_manager::UserManager::Get()->GetPrimaryUser();
if (!user || !user->is_profile_created()) {
return false;
}
switch (state_) {
case State::NOT_INITIALIZED:
case State::RELOADING:
LOG(WARNING) << "Ensuring Lacros launch: initialize and start";
InitializeAndStartIfNeeded();
return true;
case State::PRE_LAUNCHED:
LOG(WARNING) << "Ensuring Lacros launch: resume pre-launched instance";
ResumeLaunch();
return true;
case State::RUNNING:
LOG(WARNING) << "Ensuring Lacros launch: already running";
return true;
case State::STOPPED:
if (IsKeepAliveEnabled() || !pending_actions_.IsEmpty()) {
LOG(WARNING) << "Ensuring Lacros launch: currently stopped, but will "
"be restarted";
} else {
LOG(WARNING) << "Ensuring Lacros launch: currently stopped, starting";
StartIfNeeded();
}
return true;
case State::MOUNTING:
case State::PREPARING_FOR_LAUNCH:
case State::STARTING:
LOG(WARNING)
<< "Ensuring Lacros launch: already in the process of starting";
return true;
case State::WAITING_FOR_MOJO_DISCONNECTED:
case State::WAITING_FOR_PROCESS_TERMINATED:
LOG(WARNING)
<< "Ensuring Lacros launch: currently terminating, enqueueing launch";
PerformOrEnqueue(BrowserAction::GetActionForSessionStart());
return true;
case State::UNAVAILABLE:
LOG(WARNING) << "Can't ensure Lacros launch: unavailable";
return false;
}
}
void BrowserManager::InitializeAndStartIfNeeded() {
DCHECK(state_ == State::NOT_INITIALIZED || state_ == State::RELOADING);
// Ensure this isn't run multiple times.
session_manager::SessionManager::Get()->RemoveObserver(this);
PrepareLacrosPolicies(this);
// Perform the UMA recording for the current Lacros launch mode and migration
// status.
RecordLacrosLaunchModeAndMigrationStatus();
// As a switch between Ash and Lacros mode requires an Ash restart plus
// profile migration, the state will not change while the system is up.
// At this point we are starting Lacros for the first time and with that the
// operation mode is 'locked in'.
const bool is_lacros_enabled = browser_util::IsLacrosEnabled();
crosapi::lacros_startup_state::SetLacrosStartupState(is_lacros_enabled);
// Keep track of whether Lacros is enabled for this user in Local State.
RecordLacrosEnabledForPrimaryUser(is_lacros_enabled);
if (is_lacros_enabled) {
if (browser_util::IsLacrosAllowedToLaunch()) {
// Start Lacros automatically on login, if
// 1) Lacros was opened in the previous session; or
// 2) Lacros is the primary web browser.
// This can be suppressed via commandline flag for testing.
if (GetLaunchOnLoginPref() || !IsLoginLacrosOpeningDisabledForTesting()) {
pending_actions_.Push(BrowserAction::GetActionForSessionStart());
}
SetState(State::MOUNTING);
browser_loader_->Load(base::BindOnce(
&BrowserManager::OnLoadComplete, weak_factory_.GetWeakPtr(),
/*launching_at_login_screen=*/false));
} else {
SetState(State::UNAVAILABLE);
WarnThatLacrosNotAllowedToLaunch();
}
} else {
SetState(State::UNAVAILABLE);
browser_loader_->Unload();
ClearLacrosData();
}
// Post `DryRunToCollectUMA()` to send UMA stats about sizes of files/dirs
// inside the profile data directory.
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(&ash::browser_data_migrator_util::DryRunToCollectUMA,
ProfileManager::GetPrimaryUserProfile()->GetPath()));
}
void BrowserManager::PrelaunchAtLoginScreen() {
// NOTE: This is a stripped-down version of |InitializeAndStartIfNeeded| which
// assumes Lacros is enabled and primary for the user that will log in. If it
// isn't, we can terminate it after login.
DCHECK_EQ(state_, State::NOT_INITIALIZED);
DCHECK_EQ(session_manager::SessionManager::Get()->session_state(),
session_manager::SessionState::LOGIN_PRIMARY);
DCHECK(!user_manager::UserManager::Get()->IsUserLoggedIn());
// Load and start Lacros.
SetState(State::MOUNTING);
browser_loader_->Load(base::BindOnce(&BrowserManager::OnLoadComplete,
weak_factory_.GetWeakPtr(),
/*launching_at_login_screen=*/true));
}
// TODO(neis): Create BrowserAction also for this and others, perhaps even
// UpdateKeepAlive.
void BrowserManager::GetFeedbackData(GetFeedbackDataCallback callback) {
CHECK_GE(browser_service_->interface_version,
crosapi::mojom::BrowserService::kGetFeedbackDataMinVersion);
browser_service_->service->GetFeedbackData(std::move(callback));
}
bool BrowserManager::GetHistogramsSupported() const {
return browser_service_.has_value() &&
browser_service_->interface_version >=
crosapi::mojom::BrowserService::kGetHistogramsMinVersion;
}
void BrowserManager::GetHistograms(GetHistogramsCallback callback) {
DCHECK(GetHistogramsSupported());
browser_service_->service->GetHistograms(std::move(callback));
}
bool BrowserManager::GetActiveTabUrlSupported() const {
return browser_service_.has_value() &&
browser_service_->interface_version >=
crosapi::mojom::BrowserService::kGetActiveTabUrlMinVersion;
}
void BrowserManager::GetActiveTabUrl(GetActiveTabUrlCallback callback) {
DCHECK(GetActiveTabUrlSupported());
browser_service_->service->GetActiveTabUrl(std::move(callback));
}
void BrowserManager::GetBrowserInformation(
const std::string& window_unique_id,
GetBrowserInformationCallback callback) {
crosapi::CrosapiManager::Get()
->crosapi_ash()
->desk_template_ash()
->GetBrowserInformation(window_unique_id, std::move(callback));
}
void BrowserManager::AddObserver(BrowserManagerObserver* observer) {
observers_.AddObserver(observer);
}
void BrowserManager::RemoveObserver(BrowserManagerObserver* observer) {
observers_.RemoveObserver(observer);
}
void BrowserManager::Shutdown() {
// Lacros KeepAlive should be disabled once Shutdown() has been signalled.
// Further calls to `UpdateKeepAliveInBrowserIfNecessary()` will no-op after
// `shutdown_requested_` has been set.
UpdateKeepAliveInBrowserIfNecessary(false);
shutdown_requested_ = true;
shutdown_requested_while_prelaunched_ = (state_ == State::PRE_LAUNCHED);
pending_actions_.Clear();
browser_launcher_.Shutdown();
// The lacros-chrome process may have already been terminated as the result of
// a previous mojo pipe disconnection in `OnMojoDisconnected()` and not yet
// restarted. If, on the other hand, process is alive, terminate it now.
if (browser_launcher_.TriggerTerminate(/*exit_code=*/0)) {
LOG(WARNING) << "Ash-chrome shutdown initiated. Terminating lacros-chrome";
SetState(State::WAITING_FOR_PROCESS_TERMINATED);
// Synchronously post a shutdown blocking task that waits for lacros-chrome
// to cleanly exit. Terminate() will eventually result in a callback into
// OnMojoDisconnected(), however this resolves asynchronously and there is a
// risk that ash exits before this is called.
// The 2.5s wait for a successful lacros exit stays below the 3s timeout
// after which ash is forcefully terminated by the session_manager.
EnsureLacrosChromeTermination(base::Milliseconds(2500));
}
}
void BrowserManager::set_device_ownership_waiter_for_testing(
std::unique_ptr<user_manager::DeviceOwnershipWaiter>
device_ownership_waiter) {
browser_launcher_.set_device_ownership_waiter_for_testing( // IN-TEST
std::move(device_ownership_waiter));
}
void BrowserManager::set_relaunch_requested_for_testing(
bool relaunch_requested) {
CHECK_IS_TEST();
relaunch_requested_ = relaunch_requested;
}
void BrowserManager::SetState(State state) {
if (state_ == state) {
return;
}
state_ = state;
for (auto& observer : observers_) {
observer.OnStateChanged();
}
}
std::unique_ptr<BrowserManagerScopedKeepAlive> BrowserManager::KeepAlive(
Feature feature) {
// Using new explicitly because BrowserManagerScopedKeepAlive's
// constructor is private.
return base::WrapUnique(new BrowserManagerScopedKeepAlive(this, feature));
}
BrowserManager::BrowserServiceInfo::BrowserServiceInfo(
mojo::RemoteSetElementId mojo_id,
mojom::BrowserService* service,
uint32_t interface_version)
: mojo_id(mojo_id),
service(service),
interface_version(interface_version) {}
BrowserManager::BrowserServiceInfo::BrowserServiceInfo(
const BrowserServiceInfo&) = default;
BrowserManager::BrowserServiceInfo&
BrowserManager::BrowserServiceInfo::operator=(const BrowserServiceInfo&) =
default;
BrowserManager::BrowserServiceInfo::~BrowserServiceInfo() = default;
void BrowserManager::Start(bool launching_at_login_screen) {
DCHECK_EQ(state_, State::STOPPED);
DCHECK(!shutdown_requested_);
DCHECK(!lacros_path_.empty());
DCHECK(lacros_selection_.has_value());
if (!launching_at_login_screen) {
DCHECK(browser_util::IsLacrosAllowedToLaunch());
}
if (version_service_delegate_->IsNewerBrowserAvailable() &&
should_attempt_update_) {
SetState(State::MOUNTING);
lacros_path_ = base::FilePath();
lacros_selection_ = std::nullopt;
should_attempt_update_ = false;
// OnLoadComplete will call Start again.
browser_loader_->Load(base::BindOnce(&BrowserManager::OnLoadComplete,
weak_factory_.GetWeakPtr(),
launching_at_login_screen));
return;
}
should_attempt_update_ = true;
// Always reset the |relaunch_requested_| flag when launching Lacros.
relaunch_requested_ = false;
SetState(State::PREPARING_FOR_LAUNCH);
// Ensures that this is the first time to initialize `crosapi_id` before
// calling `browser_launcher_.Launch`.
CHECK(!crosapi_id_.has_value());
CHECK(lacros_selection_.has_value());
// Lacros-chrome starts with kNormal type
// TODO(crbug.com/40212082): When `LacrosThreadTypeDelegate` becomes usable,
// `options.pre_exec_delegate` should be assigned a `LacrosThreadTypeDelegate`
// object.
browser_launcher_.Launch(
lacros_path_, launching_at_login_screen, lacros_selection_.value(),
base::BindOnce(&BrowserManager::OnMojoDisconnected,
weak_factory_.GetWeakPtr()),
keep_alive_features_.empty(),
base::BindOnce(&BrowserManager::OnLaunchComplete,
weak_factory_.GetWeakPtr(), launching_at_login_screen));
}
void BrowserManager::OnLaunchComplete(
bool launching_at_login_screen,
base::expected<BrowserLauncher::LaunchResults,
BrowserLauncher::LaunchFailureReason> launch_results) {
CHECK_EQ(state_, State::PREPARING_FOR_LAUNCH);
if (!launch_results.has_value()) {
switch (launch_results.error()) {
case BrowserLauncher::LaunchFailureReason::kUnknown:
// We give up, as this is most likely a permanent problem.
SetState(State::UNAVAILABLE);
return;
case BrowserLauncher::LaunchFailureReason::kShutdownRequested:
LOG(ERROR) << "Start attempted after Shutdown() called.";
SetState(State::STOPPED);
return;
}
}
crosapi_id_ = launch_results->crosapi_id;
lacros_launch_time_ = launch_results->lacros_launch_time;
SetState(launching_at_login_screen ? State::PRE_LAUNCHED : State::STARTING);
}
void BrowserManager::EmitLoginPromptVisibleCalled() {
OnLoginPromptVisible();
}
void BrowserManager::PerformAction(std::unique_ptr<BrowserAction> action) {
BrowserAction* action_raw = action.get(); // We're `move`ing action below.
action_raw->Perform(
{browser_service_.value().service.get(),
browser_service_.value().interface_version},
base::BindOnce(&BrowserManager::OnActionPerformed,
weak_factory_.GetWeakPtr(), std::move(action)));
}
void BrowserManager::ClearLacrosData() {
// Check that Lacros is not running.
CHECK_EQ(state_, State::UNAVAILABLE);
// Skip if Chrome is in safe mode to avoid deleting
// user data when Lacros is disabled only temporarily.
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
ash::switches::kSafeMode)) {
return;
}
if (ash::BrowserDataBackMigrator::IsBackMigrationEnabled(
ash::standalone_browser::migrator_util::PolicyInitState::
kAfterInit)) {
return;
}
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE,
{base::MayBlock(), base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(RemoveLacrosUserDataDir),
base::BindOnce(&BrowserManager::OnLacrosUserDataDirRemoved,
weak_factory_.GetWeakPtr()));
}
void BrowserManager::OnLacrosUserDataDirRemoved(bool cleared) {
if (!cleared) {
// Do nothing if Lacros user data dir did not exist or could not be deleted.
return;
}
LOG(WARNING) << "Lacros user data directory was cleared. Now clearing lacros "
"related prefs.";
const user_manager::User* user =
user_manager::UserManager::Get()->GetPrimaryUser();
if (!user) {
CHECK_IS_TEST();
return;
}
content::BrowserContext* context =
ash::BrowserContextHelper::Get()->GetBrowserContextByUser(user);
if (!context) {
CHECK_IS_TEST();
return;
}
PrefService* pref_service = user_prefs::UserPrefs::Get(context);
// Clear prefs set by Lacros and stored in
// 'standalone_browser_preferences.json' if Lacros is disabled.
pref_service->RemoveAllStandaloneBrowserPrefs();
// Do a one time clearing of `kUserUninstalledPreinstalledWebAppPref`. This is
// because some users who had Lacros enabled before M114 had this pref set by
// accident for preinstalled web apps such as Calendar or Gmail. Without
// clearing this pref, if users disable Lacros, these apps will be considered
// uninstalled (and cannot easily be reinstalled). Note that this means that
// some users who intentionally uninstalled these apps on Lacros will find
// these apps reappear until they unistall them again.
web_app::UserUninstalledPreinstalledWebAppPrefs(pref_service).ClearAllApps();
}
void BrowserManager::OnBrowserServiceConnected(
CrosapiId id,
mojo::RemoteSetElementId mojo_id,
mojom::BrowserService* browser_service,
uint32_t browser_service_version) {
if (id != crosapi_id_) {
// This BrowserService is unrelated to this instance. Skipping.
return;
}
is_terminated_ = false;
DCHECK(!browser_service_.has_value());
browser_service_ =
BrowserServiceInfo{mojo_id, browser_service, browser_service_version};
if (!lacros_resume_time_.is_null()) {
// When pre-launching Lacros at login screen, it would be misleading to
// measure the start time from when the moment the binary was launched,
// as that would include the time spent idle at login screen.
// We record a different metric instead, which measures the time from
// when Lacros is resumed to when the browser service is connected.
base::UmaHistogramMediumTimes("ChromeOS.Lacros.ResumeTime",
base::TimeTicks::Now() - lacros_resume_time_);
} else {
base::UmaHistogramMediumTimes("ChromeOS.Lacros.StartTime",
base::TimeTicks::Now() - lacros_launch_time_);
}
// Set the launch-on-login pref every time lacros-chrome successfully starts,
// instead of once during ash-chrome shutdown, so we have the right value
// even if ash-chrome crashes.
SetLaunchOnLoginPref(true);
LOG(WARNING) << "Connection to lacros-chrome is established.";
DCHECK_EQ(state_, State::STARTING);
SetState(State::RUNNING);
// There can be a chance that keep_alive status is updated between the
// process launching timing (where initial_keep_alive is set) and the
// crosapi mojo connection timing (i.e., this function).
// So, send it to lacros-chrome to update to fill the possible gap.
UpdateKeepAliveInBrowserIfNecessary(!keep_alive_features_.empty());
while (!pending_actions_.IsEmpty()) {
PerformAction(pending_actions_.Pop());
DCHECK_EQ(state_, State::RUNNING);
}
}
void BrowserManager::OnBrowserServiceDisconnected(
CrosapiId id,
mojo::RemoteSetElementId mojo_id) {
// No need to check CrosapiId here, because |mojo_id| is unique within a
// process.
if (browser_service_.has_value() && browser_service_->mojo_id == mojo_id) {
browser_service_.reset();
}
}
void BrowserManager::OnBrowserRelaunchRequested(CrosapiId id) {
if (id != crosapi_id_) {
return;
}
relaunch_requested_ = true;
}
void BrowserManager::OnCoreConnected(policy::CloudPolicyCore* core) {}
void BrowserManager::OnRefreshSchedulerStarted(policy::CloudPolicyCore* core) {
core->refresh_scheduler()->AddObserver(this);
}
void BrowserManager::OnCoreDisconnecting(policy::CloudPolicyCore* core) {}
void BrowserManager::OnCoreDestruction(policy::CloudPolicyCore* core) {
core->RemoveObserver(this);
}
void BrowserManager::OnMojoDisconnected() {
LOG(WARNING)
<< "Mojo to lacros-chrome is disconnected. Terminating lacros-chrome";
SetState(State::WAITING_FOR_PROCESS_TERMINATED);
EnsureLacrosChromeTermination(base::Seconds(5));
for (auto& observer : observers_) {
observer.OnMojoDisconnected();
}
}
void BrowserManager::EnsureLacrosChromeTermination(base::TimeDelta timeout) {
// This may be called following a synchronous termination in `Shutdown()` or
// when the mojo pipe with the lacros-chrome process has disconnected. Early
// return if already handling lacros-chrome termination.
if (!browser_launcher_.IsProcessValid()) {
return;
}
CHECK_EQ(state_, State::WAITING_FOR_PROCESS_TERMINATED);
browser_service_.reset();
crosapi_id_.reset();
browser_launcher_.EnsureProcessTerminated(
base::BindOnce(&BrowserManager::OnLacrosChromeTerminated,
weak_factory_.GetWeakPtr()),
timeout);
}
void BrowserManager::HandleReload() {
DCHECK(reload_requested_);
DCHECK(!relaunch_requested_);
DCHECK(!unload_requested_);
DCHECK_EQ(state_, State::STOPPED);
// Reset BrowserManager's state.
CHECK(!browser_launcher_.IsProcessValid());
reload_requested_ = false;
should_attempt_update_ = true;
SetState(State::RELOADING);
// Reload and possibly relaunch Lacros.
InitializeAndStartIfNeeded();
}
void BrowserManager::OnLacrosChromeTerminated() {
CHECK(state_ == State::WAITING_FOR_PROCESS_TERMINATED ||
state_ == State::WAITING_FOR_MOJO_DISCONNECTED);
LOG(WARNING) << "Lacros-chrome is terminated";
is_terminated_ = true;
SetState(State::STOPPED);
if (!reload_requested_) {
auto* primary_user = user_manager::UserManager::Get()->GetPrimaryUser();
if (!(primary_user && primary_user->is_profile_created()) &&
shutdown_requested_ && !shutdown_requested_while_prelaunched_) {
// TODO(andreaorru): We expect that the case in which the profile isn't
// initialized when shutting down only happens when prelaunching at login
// screen. Here we collect other instances. Remove once we verify there
// are no such cases.
base::debug::DumpWithoutCrashing();
}
}
if (reload_requested_) {
LOG(WARNING) << "Reloading Lacros-chrome";
HandleReload();
return;
}
if (unload_requested_) {
LOG(WARNING) << "Unloading Lacros-chrome";
DCHECK(!relaunch_requested_);
SetState(State::UNAVAILABLE);
browser_loader_->Unload();
ClearLacrosData();
return;
}
if (relaunch_requested_) {
pending_actions_.Push(
BrowserAction::OpenForFullRestore(/*skip_crash_restore=*/true));
}
StartIfNeeded();
}
void BrowserManager::OnLoginPromptVisible() {
if (launch_at_login_screen_ &&
session_manager::SessionManager::Get()->session_state() ==
session_manager::SessionState::LOGIN_PRIMARY) {
PrelaunchAtLoginScreen();
}
}
void BrowserManager::OnSessionStateChanged() {
TRACE_EVENT0("login", "BrowserManager::OnSessionStateChanged");
if (disabled_for_testing_) {
CHECK_IS_TEST();
LOG(WARNING)
<< "BrowserManager disabled for testing, entering UNAVAILABLE state";
SetState(State::UNAVAILABLE);
return;
}
// Wait for session to become active.
auto* session_manager = session_manager::SessionManager::Get();
if (session_manager->session_state() !=
session_manager::SessionState::ACTIVE) {
return;
}
if (state_ == State::PRE_LAUNCHED) {
// Resume Lacros launch after login, if it was pre-launched.
ResumeLaunch();
} else if (state_ == State::NOT_INITIALIZED) {
// Otherwise, just start Lacros normally, if appropriate.
InitializeAndStartIfNeeded();
}
// If "Go to files" on the migration error page was clicked, launch it here.
HandleGoToFiles();
}
void BrowserManager::OnStoreLoaded(policy::CloudPolicyStore* store) {
DCHECK(store);
// A new policy got installed for the current user, so we need to pass it to
// the Lacros browser.
std::string policy_blob;
if (store->policy_fetch_response()) {
const bool success =
store->policy_fetch_response()->SerializeToString(&policy_blob);
DCHECK(success);
}
SetDeviceAccountPolicy(policy_blob);
}
void BrowserManager::OnStoreError(policy::CloudPolicyStore* store) {
// Policy store failed, Lacros will use stale policy as well as Ash.
}
void BrowserManager::OnStoreDestruction(policy::CloudPolicyStore* store) {
store->RemoveObserver(this);
}
void BrowserManager::OnComponentPolicyUpdated(
const policy::ComponentPolicyMap& component_policy) {
if (browser_service_.has_value()) {
browser_service_->service->UpdateComponentPolicy(
policy::CopyComponentPolicyMap(component_policy));
}
}
void BrowserManager::OnComponentPolicyServiceDestruction(
policy::ComponentCloudPolicyService* service) {
service->RemoveObserver(this);
}
void BrowserManager::OnFetchAttempt(
policy::CloudPolicyRefreshScheduler* scheduler) {
if (browser_service_.has_value()) {
browser_service_->service->NotifyPolicyFetchAttempt();
}
}
void BrowserManager::OnRefreshSchedulerDestruction(
policy::CloudPolicyRefreshScheduler* scheduler) {
scheduler->RemoveObserver(this);
}
void BrowserManager::OnUserProfileCreated(const user_manager::User& user) {
// Ignore if `user` is not primary.
if (!user_manager::UserManager::Get()->IsPrimaryUser(&user)) {
return;
}
// Record data version for primary user profile.
ash::standalone_browser::migrator_util::RecordDataVer(
g_browser_process->local_state(), user.username_hash(),
version_info::GetVersion());
// Check if Lacros is enabled for crash reporting. This must happen after the
// primary user has been set as priamry user state is used in when evaluating
// the correct value for IsLacrosEnabled().
constexpr char kLacrosEnabledDataKey[] = "lacros-enabled";
static crash_reporter::CrashKeyString<4> key(kLacrosEnabledDataKey);
key.Set(crosapi::browser_util::IsLacrosEnabled() ? "yes" : "no");
}
void BrowserManager::OnLoadComplete(bool launching_at_login_screen,
const base::FilePath& path,
LacrosSelection selection,
base::Version version) {
if (shutdown_requested_) {
LOG(ERROR) << "Load completed after Shutdown() called.";
return;
}
DCHECK_EQ(state_, State::MOUNTING);
lacros_path_ = path;
lacros_selection_ = std::optional<LacrosSelection>(selection);
const bool success = !path.empty();
SetState(success ? State::STOPPED : State::UNAVAILABLE);
// TODO(crbug.com/40801829): In the event the load operation failed, we should
// launch the last successfully loaded image.
for (auto& observer : observers_) {
observer.OnLoadComplete(success, version);
}
StartIfNeeded(launching_at_login_screen);
}
void BrowserManager::StartIfNeeded(bool launching_at_login_screen) {
if (state_ == State::STOPPED && !shutdown_requested_) {
if (launching_at_login_screen || !pending_actions_.IsEmpty() ||
IsKeepAliveEnabled()) {
Start(launching_at_login_screen);
}
}
}
void BrowserManager::ResumeLaunch() {
// NOTE: This method runs some of the operations that would have normally been
// executed in |InitializeAndStartIfNeeded| (we call |PrelaunchAtLoginScreen|
// instead) and |StartWithLogFile|, because they required the user to be
// logged in.
CHECK_EQ(state_, State::PRE_LAUNCHED);
DCHECK(user_manager::UserManager::Get()->IsUserLoggedIn());
// Ensure this isn't run multiple times.
ash::SessionManagerClient::Get()->RemoveObserver(this);
// We need to keep track of which users on the device have Lacros enabled.
const bool is_lacros_enabled = browser_util::IsLacrosEnabled();
RecordLacrosEnabledForPrimaryUser(is_lacros_enabled);
// If Lacros is not enabled for the user, terminate it now.
if (!is_lacros_enabled) {
LOG(WARNING) << "Lacros is not enabled for the current user. "
"Terminating pre-launched instance";
browser_launcher_.TriggerTerminate(/*exit_code=*/0);
SetState(State::WAITING_FOR_MOJO_DISCONNECTED);
// We need to tell the server that Lacros does not run in this session.
RecordLacrosLaunchModeAndMigrationStatus();
unload_requested_ = true;
return;
}
// If Lacros selection (rootfs/stateful) for this user is forced to a
// different value than the Lacros that was launched at login screen,
// we need to reload and relaunch the correct version of Lacros.
auto user_lacros_selection =
ash::standalone_browser::DetermineLacrosSelection();
if (user_lacros_selection.has_value() &&
lacros_selection_ != LacrosSelection::kDeployedLocally &&
lacros_selection_ != user_lacros_selection) {
LOG(WARNING)
<< "Mismatching Lacros selection between login screen and user. "
"User selection: "
<< static_cast<int>(user_lacros_selection.value()) << ". "
<< "Terminating pre-launched instance";
// Note: No need to trigger the LaunchMode recording now as we do that upon
// the relaunch.
reload_requested_ = true;
browser_launcher_.TriggerTerminate(/*exit_code=*/0);
SetState(State::WAITING_FOR_MOJO_DISCONNECTED);
return;
}
LOG(WARNING) << "Resuming lacros-chrome launch";
// Once Lacros starts and BrowserService is connected,
// the following action will be executed.
pending_actions_.Push(BrowserAction::GetActionForSessionStart());
browser_launcher_.ResumeLaunch(base::BindOnce(
&BrowserManager::OnResumeLaunchComplete, weak_factory_.GetWeakPtr()));
}
void BrowserManager::OnResumeLaunchComplete(
base::expected<base::TimeTicks, BrowserLauncher::LaunchFailureReason>
resume_time) {
CHECK_EQ(state_, State::PRE_LAUNCHED);
if (!resume_time.has_value()) {
switch (resume_time.error()) {
case BrowserLauncher::LaunchFailureReason::kShutdownRequested:
LOG(ERROR) << "Shutdown() called during resuming launch.";
SetState(State::STOPPED);
return;
case BrowserLauncher::LaunchFailureReason::kUnknown:
NOTREACHED_IN_MIGRATION();
return;
}
}
lacros_resume_time_ = resume_time.value();
// Lacros launch is unblocked now.
SetState(State::STARTING);
PrepareLacrosPolicies(this);
// Perform the UMA recording for the current Lacros launch mode and migration
// status.
RecordLacrosLaunchModeAndMigrationStatus();
crosapi::lacros_startup_state::SetLacrosStartupState(true);
// Post `DryRunToCollectUMA()` to send UMA stats about sizes of files/dirs
// inside the profile data directory.
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(&ash::browser_data_migrator_util::DryRunToCollectUMA,
ProfileManager::GetPrimaryUserProfile()->GetPath()));
}
void BrowserManager::HandleGoToFiles() {
// If "Go to files" on the migration error page was clicked, launch it here.
Profile* profile = ProfileManager::GetPrimaryUserProfile();
std::string user_id_hash =
ash::BrowserContextHelper::GetUserIdHashFromBrowserContext(profile);
if (browser_util::WasGotoFilesClicked(g_browser_process->local_state(),
user_id_hash)) {
files_app_launcher_ = std::make_unique<FilesAppLauncher>(
apps::AppServiceProxyFactory::GetForProfile(profile));
files_app_launcher_->Launch(base::BindOnce(
browser_util::ClearGotoFilesClicked, g_browser_process->local_state(),
std::move(user_id_hash)));
}
}
void BrowserManager::SetDeviceAccountPolicy(const std::string& policy_blob) {
if (browser_service_.has_value()) {
browser_service_->service->UpdateDeviceAccountPolicy(
std::vector<uint8_t>(policy_blob.begin(), policy_blob.end()));
}
}
void BrowserManager::StartKeepAlive(Feature feature) {
DCHECK(browser_util::IsLacrosEnabled());
if (IsKeepAliveDisabledForTesting()) {
return;
}
auto insertion = keep_alive_features_.insert(feature);
// Features should never be double registered.
// TODO(b/278643115): Replace if-statement with a (D)CHECK once browser tests
// no longer use multiple user managers.
if (!insertion.second) {
CHECK_IS_TEST();
}
// If this is first KeepAlive instance, update the keep-alive in the browser.
if (keep_alive_features_.size() == 1) {
UpdateKeepAliveInBrowserIfNecessary(true);
}
StartIfNeeded();
}
void BrowserManager::StopKeepAlive(Feature feature) {
keep_alive_features_.erase(feature);
if (!IsKeepAliveEnabled()) {
UpdateKeepAliveInBrowserIfNecessary(false);
}
}
bool BrowserManager::IsKeepAliveEnabled() const {
return !keep_alive_features_.empty();
}
void BrowserManager::UpdateKeepAliveInBrowserIfNecessary(bool enabled) {
if (shutdown_requested_ || !browser_service_.has_value()) {
// Shutdown has started or the browser is not running now. Just give up.
return;
}
CHECK_GE(browser_service_->interface_version,
crosapi::mojom::BrowserService::kUpdateKeepAliveMinVersion);
browser_service_->service->UpdateKeepAlive(enabled);
}
void BrowserManager::SetLacrosMigrationStatus() {
const std::optional<browser_util::MigrationStatus> status =
browser_util::GetMigrationStatus();
if (!status.has_value()) {
// This should only happen in tests.
return;
}
CHECK(!migration_status_.has_value() || *migration_status_ == *status)
<< "Lacros migration status should not change in-session.";
migration_status_ = status;
}
void BrowserManager::SetLacrosLaunchMode() {
LacrosLaunchMode lacros_mode;
LacrosLaunchModeAndSource lacros_mode_and_source;
if (!browser_util::IsAshWebBrowserEnabled()) {
// As Ash is disabled, Lacros is the only available browser.
lacros_mode = LacrosLaunchMode::kLacrosOnly;
lacros_mode_and_source =
LacrosLaunchModeAndSource::kPossiblySetByUserLacrosOnly;
} else {
lacros_mode = LacrosLaunchMode::kLacrosDisabled;
lacros_mode_and_source =
LacrosLaunchModeAndSource::kPossiblySetByUserLacrosDisabled;
}
crosapi::browser_util::LacrosLaunchSwitchSource source =
crosapi::browser_util::GetLacrosLaunchSwitchSource();
// Make sure we have always the policy loaded before we get here.
DCHECK(source != crosapi::browser_util::LacrosLaunchSwitchSource::kUnknown);
LacrosLaunchModeAndSource source_offset;
if (source ==
crosapi::browser_util::LacrosLaunchSwitchSource::kPossiblySetByUser) {
source_offset = LacrosLaunchModeAndSource::kPossiblySetByUserLacrosDisabled;
} else if (source ==
crosapi::browser_util::LacrosLaunchSwitchSource::kForcedByUser) {
source_offset = LacrosLaunchModeAndSource::kForcedByUserLacrosDisabled;
} else {
source_offset = LacrosLaunchModeAndSource::kForcedByPolicyLacrosDisabled;
}
// The states are comprised of the basic four Lacros options and the
// source of the mode selection (By user, by Policy, by System). These
// combinations are "nibbled together" here in one status value.
lacros_mode_and_source = static_cast<LacrosLaunchModeAndSource>(
static_cast<int>(source_offset) +
static_cast<int>(lacros_mode_and_source));
LOG(WARNING) << "Using LacrosLaunchModeAndSource "
<< static_cast<int>(lacros_mode_and_source);
if (!lacros_mode_.has_value() || !lacros_mode_and_source_.has_value() ||
lacros_mode != *lacros_mode_ ||
lacros_mode_and_source != *lacros_mode_and_source_) {
// Remember new values.
lacros_mode_ = lacros_mode;
lacros_mode_and_source_ = lacros_mode_and_source;
}
}
void BrowserManager::RecordLacrosLaunchModeAndMigrationStatus() {
SetLacrosMigrationStatus();
if (!migration_status_.has_value()) {
// `SetLacrosMigrationStatus()` does not set `migration_status_` if primary
// user is not yet set at the time of calling (see
// `browser_util::GetMigrationMode()` for details). This should only happen
// in tests.
CHECK_IS_TEST();
return;
}
SetLacrosLaunchMode();
base::UmaHistogramEnumeration("Ash.Lacros.Launch.Mode", *lacros_mode_);
base::UmaHistogramEnumeration("Ash.Lacros.Launch.ModeAndSource",
*lacros_mode_and_source_);
base::UmaHistogramEnumeration(kLacrosMigrationStatus, *migration_status_);
// Call our Daily reporting once now to make sure we have an event. If it's a
// dupe, the server will de-dupe.
OnDailyLaunchModeAndMigrationStatusTimer();
if (!daily_event_timer_.IsRunning()) {
daily_event_timer_.Start(
FROM_HERE, kDailyLaunchModeTimeDelta, this,
&BrowserManager::OnDailyLaunchModeAndMigrationStatusTimer);
}
}
void BrowserManager::PerformOrEnqueue(std::unique_ptr<BrowserAction> action) {
if (shutdown_requested_) {
LOG(WARNING) << "lacros-chrome is preparing for system shutdown";
// The whole system is shutting down, so there is no point in queueing the
// request for later.
action->Cancel(mojom::CreationResult::kBrowserNotRunning);
return;
}
switch (state_) {
case State::UNAVAILABLE:
LOG(ERROR) << "lacros unavailable";
// We cannot recover from this, so there is no point in queueing the
// request for later.
action->Cancel(mojom::CreationResult::kBrowserNotRunning);
return;
case State::NOT_INITIALIZED:
case State::RELOADING:
case State::MOUNTING:
LOG(WARNING) << "lacros component image not yet available";
pending_actions_.PushOrCancel(std::move(action),
mojom::CreationResult::kBrowserNotRunning);
return;
case State::WAITING_FOR_MOJO_DISCONNECTED:
case State::WAITING_FOR_PROCESS_TERMINATED:
LOG(WARNING) << "lacros-chrome is terminating, so cannot start now";
pending_actions_.PushOrCancel(std::move(action),
mojom::CreationResult::kBrowserNotRunning);
return;
case State::PREPARING_FOR_LAUNCH:
LOG(WARNING) << "lacros-chrome is preparing for launch";
pending_actions_.PushOrCancel(std::move(action),
mojom::CreationResult::kBrowserNotRunning);
return;
case State::PRE_LAUNCHED:
case State::STARTING:
LOG(WARNING) << "lacros-chrome is in the process of launching";
pending_actions_.PushOrCancel(std::move(action),
mojom::CreationResult::kBrowserNotRunning);
return;
case State::STOPPED:
DCHECK(!IsKeepAliveEnabled());
DCHECK(pending_actions_.IsEmpty());
pending_actions_.PushOrCancel(std::move(action),
mojom::CreationResult::kBrowserNotRunning);
StartIfNeeded();
return;
case State::RUNNING:
if (!browser_service_.has_value()) {
LOG(ERROR) << "BrowserService was disconnected";
// We expect that OnMojoDisconnected will get called very soon, which
// will transition us to STOPPED state. Hence it's okay to enqueue the
// action.
pending_actions_.PushOrCancel(
std::move(action), mojom::CreationResult::kServiceDisconnected);
return;
}
PerformAction(std::move(action));
return;
}
}
void BrowserManager::OnActionPerformed(std::unique_ptr<BrowserAction> action,
bool retry) {
if (retry) {
PerformOrEnqueue(std::move(action));
}
}
// Callback called when the daily event happens.
void BrowserManager::OnDailyLaunchModeAndMigrationStatusTimer() {
base::UmaHistogramEnumeration(kLacrosMigrationStatusDaily,
*migration_status_);
base::UmaHistogramEnumeration(kLacrosLaunchModeDaily, *lacros_mode_);
base::UmaHistogramEnumeration(kLacrosLaunchModeAndSourceDaily,
*lacros_mode_and_source_);
}
// static
void BrowserManager::DisableForTesting() {
CHECK_IS_TEST();
g_disabled_for_testing = true;
}
// static
void BrowserManager::EnableForTesting() {
CHECK_IS_TEST();
g_disabled_for_testing = false;
}
BrowserManager::ScopedUnsetAllKeepAliveForTesting::
ScopedUnsetAllKeepAliveForTesting(BrowserManager* manager)
: manager_(manager) {
previous_keep_alive_features_ = std::move(manager_->keep_alive_features_);
manager_->keep_alive_features_.clear();
manager_->UpdateKeepAliveInBrowserIfNecessary(false);
}
BrowserManager::ScopedUnsetAllKeepAliveForTesting::
~ScopedUnsetAllKeepAliveForTesting() {
manager_->keep_alive_features_ = std::move(previous_keep_alive_features_);
manager_->UpdateKeepAliveInBrowserIfNecessary(
!manager_->keep_alive_features_.empty());
}
void BrowserManager::KillLacrosForTesting() {
browser_launcher_.TriggerTerminate(/*exit_code=*/1);
}
} // namespace crosapi
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