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// 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/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/system/sys_info.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 "chrome/browser/apps/app_service/app_service_proxy_factory.h"
#include "chrome/browser/ash/crosapi/crosapi_manager.h"
#include "chrome/browser/ash/crosapi/crosapi_util.h"
#include "chrome/browser/ash/crosapi/files_app_launcher.h"
#include "chrome/browser/ash/profiles/profile_helper.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/crosapi/cpp/crosapi_constants.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/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/base/mojom/window_show_state.mojom.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 {
// Pointer to the global instance of BrowserManager.
BrowserManager* g_instance = nullptr;
base::FilePath GetUserDataDir() {
if (base::SysInfo::IsRunningOnChromeOS()) {
// NOTE: On device this function is privacy/security sensitive. The
// directory must be inside the encrypted user partition.
return base::FilePath(crosapi::kLacrosUserDataPath);
}
// For developers on Linux desktop, put the directory under the developer's
// specified --user-data-dir.
base::FilePath base_path;
base::PathService::Get(chrome::DIR_USER_DATA, &base_path);
return base_path.Append("lacros");
}
bool RemoveLacrosUserDataDir() {
const base::FilePath lacros_data_dir = GetUserDataDir();
return base::PathExists(lacros_data_dir) &&
base::DeletePathRecursively(lacros_data_dir);
}
} // namespace
// static
BrowserManager* BrowserManager::Get() {
return g_instance;
}
BrowserManager::BrowserManager() {
DCHECK(!g_instance);
g_instance = 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 (!CrosapiManager::IsInitialized()) {
CHECK_IS_TEST();
}
}
BrowserManager::~BrowserManager() {
// Unregister, just in case the manager is destroyed before
// OnUserSessionStarted() is called.
if (session_manager::SessionManager::Get()) {
session_manager::SessionManager::Get()->RemoveObserver(this);
}
DCHECK_EQ(g_instance, this);
g_instance = nullptr;
}
void BrowserManager::InitializeAndStartIfNeeded() {
DCHECK_EQ(state_, State::NOT_INITIALIZED);
// Ensure this isn't run multiple times.
session_manager::SessionManager::Get()->RemoveObserver(this);
SetState(State::UNAVAILABLE);
ClearLacrosData();
}
void BrowserManager::SetState(State state) {
if (state_ == state) {
return;
}
state_ = state;
}
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;
}
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;
}
// 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.
PrefService* pref_service = user_prefs::UserPrefs::Get(context);
web_app::UserUninstalledPreinstalledWebAppPrefs(pref_service).ClearAllApps();
}
void BrowserManager::OnSessionStateChanged() {
TRACE_EVENT0("login", "BrowserManager::OnSessionStateChanged");
// 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::NOT_INITIALIZED) {
InitializeAndStartIfNeeded();
}
}
} // namespace crosapi
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