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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "chrome/browser/ash/app_mode/app_launch_utils.h"
#include <cstddef>
#include <iterator>
#include <optional>
#include <string>
#include <vector>
#include "ash/constants/ash_switches.h"
#include "base/check.h"
#include "base/check_deref.h"
#include "base/command_line.h"
#include "base/notimplemented.h"
#include "base/notreached.h"
#include "base/values.h"
#include "chrome/browser/ash/app_mode/kiosk_app_launch_error.h"
#include "chrome/browser/ash/app_mode/kiosk_app_types.h"
#include "chrome/browser/ash/app_mode/kiosk_chrome_app_manager.h"
#include "chrome/browser/ash/app_mode/kiosk_controller.h"
#include "chrome/browser/ash/login/startup_utils.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/pref_names.h"
#include "components/account_id/account_id.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "components/user_manager/user_manager.h"
namespace ash {
namespace {
// The list of prefs that are reset on the start of each kiosk session.
const char* const kPrefsToReset[] = {"settings.accessibility", // ChromeVox
"settings.a11y", "ash.docked_magnifier",
"settings.tts"};
// This vector is used in tests when they want to replace `kPrefsToReset` with
// their own list.
std::vector<std::string>* test_prefs_to_reset = nullptr;
bool ShouldAutoLaunchAfterAppLaunchError(KioskAppLaunchError::Error error) {
return error == KioskAppLaunchError::Error::kNone ||
error == KioskAppLaunchError::Error::kChromeAppDeprecated;
}
} // namespace
void ResetEphemeralKioskPreferences(PrefService* prefs) {
CHECK(prefs);
CHECK(user_manager::UserManager::IsInitialized() &&
user_manager::UserManager::Get()->IsLoggedInAsAnyKioskApp());
for (size_t pref_id = 0;
pref_id < (test_prefs_to_reset ? test_prefs_to_reset->size()
: std::size(kPrefsToReset));
pref_id++) {
const std::string branch_path = test_prefs_to_reset
? (*test_prefs_to_reset)[pref_id]
: kPrefsToReset[pref_id];
prefs->ClearPrefsWithPrefixSilently(branch_path);
}
}
void SetEphemeralKioskPreferencesListForTesting(
std::vector<std::string>* prefs) {
test_prefs_to_reset = prefs;
}
bool ShouldAutoLaunchKioskApp(const base::CommandLine& command_line,
const PrefService& local_state) {
// We shouldn't auto launch kiosk app if a designated command line switch was
// used.
//
// For example, in Tast tests command line switch is used to prevent kiosk
// autolaunch configured by policy from a previous test. This way ChromeOS
// will stay on the login screen and Tast can perform policies cleanup.
if (command_line.HasSwitch(switches::kPreventKioskAutolaunchForTesting)) {
return false;
}
// We shouldn't auto launch kiosk app if powerwash screen should be shown.
if (local_state.GetBoolean(prefs::kFactoryResetRequested)) {
return false;
}
return command_line.HasSwitch(switches::kLoginManager) &&
KioskController::Get().GetAutoLaunchApp().has_value() &&
ShouldAutoLaunchAfterAppLaunchError(KioskAppLaunchError::Get()) &&
// IsOobeCompleted() is needed to prevent kiosk session start in case
// of enterprise rollback, when keeping the enrollment, policy, not
// clearing TPM, but wiping stateful partition.
StartupUtils::IsOobeCompleted();
}
} // namespace ash
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