mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-11-01 09:57:46 +00:00
419 lines
14 KiB
Dart
419 lines
14 KiB
Dart
// ignore_for_file: prefer_final_fields
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import 'package:cake_wallet/entities/cake_2fa_preset_options.dart';
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import 'package:cake_wallet/store/settings_store.dart';
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import 'package:cake_wallet/utils/totp_utils.dart' as Utils;
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import 'package:cake_wallet/view_model/auth_state.dart';
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import 'package:flutter/widgets.dart';
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import 'package:mobx/mobx.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../core/auth_service.dart';
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import '../core/execution_state.dart';
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import '../generated/i18n.dart';
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part 'set_up_2fa_viewmodel.g.dart';
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class Setup2FAViewModel = Setup2FAViewModelBase with _$Setup2FAViewModel;
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abstract class Setup2FAViewModelBase with Store {
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final SettingsStore _settingsStore;
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final AuthService _authService;
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final SharedPreferences _sharedPreferences;
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Setup2FAViewModelBase(this._settingsStore, this._sharedPreferences, this._authService)
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: _failureCounter = 0,
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enteredOTPCode = '',
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unhighlightTabs = false,
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selected2FASettings = ObservableList<VerboseControlSettings>(),
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state = InitialExecutionState() {
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_getRandomBase32SecretKey();
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selectCakePreset(selectedCake2FAPreset);
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reaction((_) => state, _saveLastAuthTime);
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}
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static const maxFailedTrials = 3;
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static const banTimeout = 180; // 3 minutes
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final banTimeoutKey = S.current.auth_store_ban_timeout;
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String get secretKey => _settingsStore.totpSecretKey;
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String get deviceName => _settingsStore.deviceName;
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String get totpVersionOneLink => _settingsStore.totpVersionOneLink;
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@observable
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ExecutionState state;
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@observable
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int _failureCounter;
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@observable
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String enteredOTPCode;
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@computed
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bool get useTOTP2FA => _settingsStore.useTOTP2FA;
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@computed
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bool get shouldRequireTOTP2FAForAccessingWallet =>
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_settingsStore.shouldRequireTOTP2FAForAccessingWallet;
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@computed
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bool get shouldRequireTOTP2FAForSendsToContact =>
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_settingsStore.shouldRequireTOTP2FAForSendsToContact;
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@computed
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bool get shouldRequireTOTP2FAForSendsToNonContact =>
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_settingsStore.shouldRequireTOTP2FAForSendsToNonContact;
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@computed
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bool get shouldRequireTOTP2FAForSendsToInternalWallets =>
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_settingsStore.shouldRequireTOTP2FAForSendsToInternalWallets;
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@computed
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bool get shouldRequireTOTP2FAForExchangesToInternalWallets =>
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_settingsStore.shouldRequireTOTP2FAForExchangesToInternalWallets;
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@computed
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bool get shouldRequireTOTP2FAForAddingContacts =>
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_settingsStore.shouldRequireTOTP2FAForAddingContacts;
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@computed
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bool get shouldRequireTOTP2FAForCreatingNewWallets =>
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_settingsStore.shouldRequireTOTP2FAForCreatingNewWallets;
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@computed
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bool get shouldRequireTOTP2FAForAllSecurityAndBackupSettings =>
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_settingsStore.shouldRequireTOTP2FAForAllSecurityAndBackupSettings;
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void _getRandomBase32SecretKey() {
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final randomBase32Key = Utils.generateRandomBase32SecretKey(16);
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_setBase32SecretKey(randomBase32Key);
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}
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@action
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void setUseTOTP2FA(bool value) {
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_settingsStore.useTOTP2FA = value;
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}
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@action
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void _setBase32SecretKey(String value) {
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_settingsStore.totpSecretKey = value;
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}
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@action
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void clearBase32SecretKey() {
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_settingsStore.totpSecretKey = '';
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}
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Duration? banDuration() {
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final unbanTimestamp = _sharedPreferences.getInt(banTimeoutKey);
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if (unbanTimestamp == null) {
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return null;
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}
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final unbanTime = DateTime.fromMillisecondsSinceEpoch(unbanTimestamp);
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final now = DateTime.now();
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if (now.isAfter(unbanTime)) {
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return null;
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}
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return Duration(milliseconds: unbanTimestamp - now.millisecondsSinceEpoch);
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}
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Future<Duration> ban() async {
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final multiplier = _failureCounter - maxFailedTrials;
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final timeout = (multiplier * banTimeout) * 1000;
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final unbanTimestamp = DateTime.now().millisecondsSinceEpoch + timeout;
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await _sharedPreferences.setInt(banTimeoutKey, unbanTimestamp);
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return Duration(milliseconds: timeout);
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}
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@action
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Future<bool> totp2FAAuth(String otpText, bool isForSetup) async {
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state = InitialExecutionState();
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_failureCounter = _settingsStore.numberOfFailedTokenTrials;
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final _banDuration = banDuration();
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if (_banDuration != null) {
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state = AuthenticationBanned(
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error: S.current.auth_store_banned_for +
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'${_banDuration.inMinutes}' +
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S.current.auth_store_banned_minutes);
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return false;
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}
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final result = Utils.verify(
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secretKey: secretKey,
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otp: otpText,
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);
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isForSetup ? setUseTOTP2FA(result) : null;
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if (result) {
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return true;
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} else {
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final value = _settingsStore.numberOfFailedTokenTrials + 1;
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adjustTokenTrialNumber(value);
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print(value);
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if (_failureCounter >= maxFailedTrials) {
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final banDuration = await ban();
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state = AuthenticationBanned(
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error: S.current.auth_store_banned_for +
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'${banDuration.inMinutes}' +
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S.current.auth_store_banned_minutes);
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return false;
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}
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state = FailureState('Incorrect code');
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return false;
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}
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}
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@action
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void success() {
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WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
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state = ExecutedSuccessfullyState();
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adjustTokenTrialNumber(0);
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});
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}
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@action
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void adjustTokenTrialNumber(int value) {
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_failureCounter = value;
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_settingsStore.numberOfFailedTokenTrials = value;
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}
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void _saveLastAuthTime(ExecutionState state) {
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if (state is ExecutedSuccessfullyState) {
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_authService.saveLastAuthTime();
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}
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}
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@computed
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Cake2FAPresetsOptions get selectedCake2FAPreset => _settingsStore.selectedCake2FAPreset;
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@observable
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bool unhighlightTabs = false;
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@observable
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ObservableList<VerboseControlSettings> selected2FASettings;
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//! The code here works, but can be improved
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//! Still trying out various ways to improve it
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@action
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void selectCakePreset(Cake2FAPresetsOptions cake2FAPreset) {
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// The tabs are ordered in the format [Narrow || Normal || Verbose]
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// Where Narrow = 0, Normal = 1 and Verbose = 2
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switch (cake2FAPreset) {
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case Cake2FAPresetsOptions.narrow:
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activateCake2FANarrowPreset();
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break;
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case Cake2FAPresetsOptions.normal:
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activateCake2FANormalPreset();
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break;
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case Cake2FAPresetsOptions.aggressive:
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activateCake2FAAggressivePreset();
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break;
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default:
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activateCake2FANormalPreset();
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}
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}
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@action
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void checkIfTheCurrentSettingMatchesAnyOfThePresets() {
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final hasNormalPreset = checkIfTheNormalPresetIsPresent();
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final hasNarrowPreset = checkIfTheNarrowPresetIsPresent();
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final hasVerbosePreset = checkIfTheVerbosePresetIsPresent();
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if (hasNormalPreset || hasNarrowPreset || hasVerbosePreset) {
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unhighlightTabs = false;
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} else {
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unhighlightTabs = true;
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}
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}
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@action
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bool checkIfTheNormalPresetIsPresent() {
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final hasContacts = selected2FASettings.contains(VerboseControlSettings.sendsToContacts);
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final hasNonContacts = selected2FASettings.contains(VerboseControlSettings.sendsToNonContacts);
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final hasSecurityAndBackup =
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selected2FASettings.contains(VerboseControlSettings.securityAndBackupSettings);
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final hasSendToInternalWallet =
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selected2FASettings.contains(VerboseControlSettings.sendsToInternalWallets);
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final hasExchangesToInternalWallet =
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selected2FASettings.contains(VerboseControlSettings.exchangesToInternalWallets);
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bool isOnlyNormalPresetControlsPresent = selected2FASettings.length == 5;
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return (hasContacts &&
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hasNonContacts &&
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hasSecurityAndBackup &&
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hasSendToInternalWallet &&
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hasExchangesToInternalWallet &&
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isOnlyNormalPresetControlsPresent);
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}
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@action
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bool checkIfTheVerbosePresetIsPresent() {
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final hasAccessWallets = selected2FASettings.contains(VerboseControlSettings.accessWallet);
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final hasSecurityAndBackup =
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selected2FASettings.contains(VerboseControlSettings.securityAndBackupSettings);
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bool isOnlyVerbosePresetControlsPresent = selected2FASettings.length == 2;
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return (hasAccessWallets && hasSecurityAndBackup && isOnlyVerbosePresetControlsPresent);
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}
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@action
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bool checkIfTheNarrowPresetIsPresent() {
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final hasNonContacts = selected2FASettings.contains(VerboseControlSettings.sendsToNonContacts);
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final hasAddContacts = selected2FASettings.contains(VerboseControlSettings.addingContacts);
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final hasCreateNewWallet =
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selected2FASettings.contains(VerboseControlSettings.creatingNewWallets);
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final hasSecurityAndBackup =
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selected2FASettings.contains(VerboseControlSettings.securityAndBackupSettings);
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bool isOnlyNarrowPresetControlsPresent = selected2FASettings.length == 4;
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return (hasNonContacts &&
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hasAddContacts &&
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hasCreateNewWallet &&
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hasSecurityAndBackup &&
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isOnlyNarrowPresetControlsPresent);
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}
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@action
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void activateCake2FANormalPreset() {
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_settingsStore.selectedCake2FAPreset = Cake2FAPresetsOptions.normal;
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setAllControlsToFalse();
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switchShouldRequireTOTP2FAForSendsToNonContact(true);
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switchShouldRequireTOTP2FAForSendsToContact(true);
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switchShouldRequireTOTP2FAForSendsToInternalWallets(true);
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switchShouldRequireTOTP2FAForExchangesToInternalWallets(true);
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switchShouldRequireTOTP2FAForAllSecurityAndBackupSettings(true);
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}
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@action
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void activateCake2FANarrowPreset() {
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_settingsStore.selectedCake2FAPreset = Cake2FAPresetsOptions.narrow;
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setAllControlsToFalse();
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switchShouldRequireTOTP2FAForSendsToNonContact(true);
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switchShouldRequireTOTP2FAForAddingContacts(true);
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switchShouldRequireTOTP2FAForCreatingNewWallet(true);
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switchShouldRequireTOTP2FAForAllSecurityAndBackupSettings(true);
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}
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@action
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void activateCake2FAAggressivePreset() {
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_settingsStore.selectedCake2FAPreset = Cake2FAPresetsOptions.aggressive;
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setAllControlsToFalse();
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switchShouldRequireTOTP2FAForAccessingWallet(true);
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switchShouldRequireTOTP2FAForAllSecurityAndBackupSettings(true);
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}
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@action
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void setAllControlsToFalse() {
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switchShouldRequireTOTP2FAForAccessingWallet(false);
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switchShouldRequireTOTP2FAForSendsToContact(false);
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switchShouldRequireTOTP2FAForSendsToNonContact(false);
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switchShouldRequireTOTP2FAForAddingContacts(false);
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switchShouldRequireTOTP2FAForCreatingNewWallet(false);
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switchShouldRequireTOTP2FAForExchangesToInternalWallets(false);
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switchShouldRequireTOTP2FAForSendsToInternalWallets(false);
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switchShouldRequireTOTP2FAForAllSecurityAndBackupSettings(false);
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selected2FASettings.clear();
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unhighlightTabs = false;
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}
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@action
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void switchShouldRequireTOTP2FAForAccessingWallet(bool value) {
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_settingsStore.shouldRequireTOTP2FAForAccessingWallet = value;
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if (value) {
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selected2FASettings.add(VerboseControlSettings.accessWallet);
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} else {
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selected2FASettings.remove(VerboseControlSettings.accessWallet);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForSendsToContact(bool value) {
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_settingsStore.shouldRequireTOTP2FAForSendsToContact = value;
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if (value) {
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selected2FASettings.add(VerboseControlSettings.sendsToContacts);
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} else {
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selected2FASettings.remove(VerboseControlSettings.sendsToContacts);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForSendsToNonContact(bool value) {
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_settingsStore.shouldRequireTOTP2FAForSendsToNonContact = value;
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if (value) {
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selected2FASettings.add(VerboseControlSettings.sendsToNonContacts);
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} else {
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selected2FASettings.remove(VerboseControlSettings.sendsToNonContacts);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForSendsToInternalWallets(bool value) {
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_settingsStore.shouldRequireTOTP2FAForSendsToInternalWallets = value;
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if (value) {
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selected2FASettings.add(VerboseControlSettings.sendsToInternalWallets);
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} else {
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selected2FASettings.remove(VerboseControlSettings.sendsToInternalWallets);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForExchangesToInternalWallets(bool value) {
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_settingsStore.shouldRequireTOTP2FAForExchangesToInternalWallets = value;
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if (value) {
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selected2FASettings.add(VerboseControlSettings.exchangesToInternalWallets);
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} else {
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selected2FASettings.remove(VerboseControlSettings.exchangesToInternalWallets);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForAddingContacts(bool value) {
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_settingsStore.shouldRequireTOTP2FAForAddingContacts = value;
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if (value)
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selected2FASettings.add(VerboseControlSettings.addingContacts);
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else {
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selected2FASettings.remove(VerboseControlSettings.addingContacts);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForCreatingNewWallet(bool value) {
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_settingsStore.shouldRequireTOTP2FAForCreatingNewWallets = value;
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if (value) {
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selected2FASettings.add(VerboseControlSettings.creatingNewWallets);
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} else {
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selected2FASettings.remove(VerboseControlSettings.creatingNewWallets);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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@action
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void switchShouldRequireTOTP2FAForAllSecurityAndBackupSettings(bool value) {
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_settingsStore.shouldRequireTOTP2FAForAllSecurityAndBackupSettings = value;
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if (value)
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selected2FASettings.add(VerboseControlSettings.securityAndBackupSettings);
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else {
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selected2FASettings.remove(VerboseControlSettings.securityAndBackupSettings);
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}
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checkIfTheCurrentSettingMatchesAnyOfThePresets();
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}
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}
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