mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-12-23 12:09:43 +00:00
474 lines
19 KiB
Dart
474 lines
19 KiB
Dart
import 'dart:convert';
|
|
import 'dart:io';
|
|
import 'dart:typed_data';
|
|
import 'package:cw_core/wallet_type.dart';
|
|
import 'package:flutter/foundation.dart';
|
|
import 'package:hive/hive.dart';
|
|
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
|
|
import 'package:path_provider/path_provider.dart';
|
|
import 'package:cryptography/cryptography.dart';
|
|
import 'package:shared_preferences/shared_preferences.dart';
|
|
import 'package:archive/archive_io.dart';
|
|
import 'package:cake_wallet/core/key_service.dart';
|
|
import 'package:cake_wallet/entities/encrypt.dart';
|
|
import 'package:cake_wallet/entities/preferences_key.dart';
|
|
import 'package:cake_wallet/entities/secret_store_key.dart';
|
|
import 'package:cw_core/wallet_info.dart';
|
|
import 'package:cake_wallet/.secrets.g.dart' as secrets;
|
|
import 'package:cake_wallet/wallet_types.g.dart';
|
|
import 'package:cake_backup/backup.dart' as cake_backup;
|
|
|
|
class BackupService {
|
|
BackupService(this._flutterSecureStorage, this._walletInfoSource,
|
|
this._keyService, this._sharedPreferences)
|
|
: _cipher = Cryptography.instance.chacha20Poly1305Aead(),
|
|
_correctWallets = <WalletInfo>[];
|
|
|
|
static const currentVersion = _v2;
|
|
|
|
static const _v1 = 1;
|
|
static const _v2 = 2;
|
|
|
|
final Cipher _cipher;
|
|
final FlutterSecureStorage _flutterSecureStorage;
|
|
final SharedPreferences _sharedPreferences;
|
|
final Box<WalletInfo> _walletInfoSource;
|
|
final KeyService _keyService;
|
|
List<WalletInfo> _correctWallets;
|
|
|
|
Future<void> importBackup(Uint8List data, String password,
|
|
{String nonce = secrets.backupSalt}) async {
|
|
final version = getVersion(data);
|
|
|
|
switch (version) {
|
|
case _v1:
|
|
final backupBytes = data.toList()..removeAt(0);
|
|
final backupData = Uint8List.fromList(backupBytes);
|
|
await _importBackupV1(backupData, password, nonce: nonce);
|
|
break;
|
|
case _v2:
|
|
await _importBackupV2(data, password);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
Future<Uint8List> exportBackup(String password,
|
|
{String nonce = secrets.backupSalt, int version = currentVersion}) async {
|
|
switch (version) {
|
|
case _v1:
|
|
return await _exportBackupV1(password, nonce: nonce);
|
|
case _v2:
|
|
return await _exportBackupV2(password);
|
|
default:
|
|
throw Exception('Incorrect version: $version for exportBackup');
|
|
}
|
|
}
|
|
|
|
@Deprecated('Use v2 instead')
|
|
Future<Uint8List> _exportBackupV1(String password,
|
|
{String nonce = secrets.backupSalt}) async
|
|
=> throw Exception('Deprecated. Export for backups v1 is deprecated. Please use export v2.');
|
|
|
|
Future<Uint8List> _exportBackupV2(String password) async {
|
|
final zipEncoder = ZipFileEncoder();
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
final now = DateTime.now();
|
|
final tmpDir = Directory('${appDir.path}/~_BACKUP_TMP');
|
|
final archivePath = '${tmpDir.path}/backup_${now.toString()}.zip';
|
|
final fileEntities = appDir.listSync(recursive: false);
|
|
final keychainDump = await _exportKeychainDumpV2(password);
|
|
final preferencesDump = await _exportPreferencesJSON();
|
|
final preferencesDumpFile = File('${tmpDir.path}/~_preferences_dump_TMP');
|
|
final keychainDumpFile = File('${tmpDir.path}/~_keychain_dump_TMP');
|
|
|
|
if (tmpDir.existsSync()) {
|
|
tmpDir.deleteSync(recursive: true);
|
|
}
|
|
|
|
tmpDir.createSync();
|
|
zipEncoder.create(archivePath);
|
|
|
|
fileEntities.forEach((entity) {
|
|
if (entity.path == archivePath || entity.path == tmpDir.path) {
|
|
return;
|
|
}
|
|
|
|
if (entity.statSync().type == FileSystemEntityType.directory) {
|
|
zipEncoder.addDirectory(Directory(entity.path));
|
|
} else {
|
|
zipEncoder.addFile(File(entity.path));
|
|
}
|
|
});
|
|
await keychainDumpFile.writeAsBytes(keychainDump.toList());
|
|
await preferencesDumpFile.writeAsString(preferencesDump);
|
|
await zipEncoder.addFile(preferencesDumpFile, '~_preferences_dump');
|
|
await zipEncoder.addFile(keychainDumpFile, '~_keychain_dump');
|
|
zipEncoder.close();
|
|
|
|
final content = File(archivePath).readAsBytesSync();
|
|
tmpDir.deleteSync(recursive: true);
|
|
return await _encryptV2(content, password);
|
|
}
|
|
|
|
Future<void> _importBackupV1(Uint8List data, String password,
|
|
{required String nonce}) async {
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
final decryptedData = await _decryptV1(data, password, nonce);
|
|
final zip = ZipDecoder().decodeBytes(decryptedData);
|
|
|
|
zip.files.forEach((file) {
|
|
final filename = file.name;
|
|
|
|
if (file.isFile) {
|
|
final content = file.content as List<int>;
|
|
File('${appDir.path}/' + filename)
|
|
..createSync(recursive: true)
|
|
..writeAsBytesSync(content);
|
|
} else {
|
|
Directory('${appDir.path}/' + filename)..create(recursive: true);
|
|
}
|
|
});
|
|
|
|
await _verifyWallets();
|
|
await _importKeychainDumpV1(password, nonce: nonce);
|
|
await _importPreferencesDump();
|
|
}
|
|
|
|
Future<void> _importBackupV2(Uint8List data, String password) async {
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
final decryptedData = await _decryptV2(data, password);
|
|
final zip = ZipDecoder().decodeBytes(decryptedData);
|
|
|
|
zip.files.forEach((file) {
|
|
final filename = file.name;
|
|
|
|
if (file.isFile) {
|
|
final content = file.content as List<int>;
|
|
File('${appDir.path}/' + filename)
|
|
..createSync(recursive: true)
|
|
..writeAsBytesSync(content);
|
|
} else {
|
|
Directory('${appDir.path}/' + filename)..create(recursive: true);
|
|
}
|
|
});
|
|
|
|
await _verifyWallets();
|
|
await _importKeychainDumpV2(password);
|
|
await _importPreferencesDump();
|
|
}
|
|
|
|
Future<void> _verifyWallets() async {
|
|
final walletInfoSource = await _reloadHiveWalletInfoBox();
|
|
_correctWallets = walletInfoSource
|
|
.values
|
|
.where((info) => availableWalletTypes.contains(info.type))
|
|
.toList();
|
|
|
|
if (_correctWallets.isEmpty) {
|
|
throw Exception('Correct wallets not detected');
|
|
}
|
|
}
|
|
|
|
Future<Box<WalletInfo>> _reloadHiveWalletInfoBox() async {
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
await Hive.close();
|
|
Hive.init(appDir.path);
|
|
|
|
if (!Hive.isAdapterRegistered(WalletInfo.typeId)) {
|
|
Hive.registerAdapter(WalletInfoAdapter());
|
|
}
|
|
|
|
return await Hive.openBox<WalletInfo>(WalletInfo.boxName);
|
|
}
|
|
|
|
Future<void> _importPreferencesDump() async {
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
final preferencesFile = File('${appDir.path}/~_preferences_dump');
|
|
|
|
if (!preferencesFile.existsSync()) {
|
|
return;
|
|
}
|
|
|
|
final data =
|
|
json.decode(preferencesFile.readAsStringSync()) as Map<String, dynamic>;
|
|
String currentWalletName = data[PreferencesKey.currentWalletName] as String;
|
|
int currentWalletType = data[PreferencesKey.currentWalletType] as int;
|
|
|
|
final isCorrentCurrentWallet = _correctWallets
|
|
.any((info) => info.name == currentWalletName &&
|
|
info.type.index == currentWalletType);
|
|
|
|
if (!isCorrentCurrentWallet) {
|
|
currentWalletName = _correctWallets.first.name;
|
|
currentWalletType = serializeToInt(_correctWallets.first.type);
|
|
}
|
|
|
|
final currentNodeId = data[PreferencesKey.currentNodeIdKey] as int?;
|
|
final currentBalanceDisplayMode = data[PreferencesKey.currentBalanceDisplayModeKey] as int?;
|
|
final currentFiatCurrency = data[PreferencesKey.currentFiatCurrencyKey] as String?;
|
|
final shouldSaveRecipientAddress = data[PreferencesKey.shouldSaveRecipientAddressKey] as bool?;
|
|
final currentTransactionPriorityKeyLegacy = data[PreferencesKey.currentTransactionPriorityKeyLegacy] as int?;
|
|
final allowBiometricalAuthentication = data[PreferencesKey.allowBiometricalAuthenticationKey] as bool?;
|
|
final currentBitcoinElectrumSererId = data[PreferencesKey.currentBitcoinElectrumSererIdKey] as int?;
|
|
final currentLanguageCode = data[PreferencesKey.currentLanguageCode] as String?;
|
|
final displayActionListMode = data[PreferencesKey.displayActionListModeKey] as int?;
|
|
final fiatApiMode = data[PreferencesKey.currentFiatApiModeKey] as int?;
|
|
final currentPinLength = data[PreferencesKey.currentPinLength] as int?;
|
|
final currentTheme = data[PreferencesKey.currentTheme] as int?;
|
|
final currentDefaultSettingsMigrationVersion = data[PreferencesKey.currentDefaultSettingsMigrationVersion] as int?;
|
|
final moneroTransactionPriority = data[PreferencesKey.moneroTransactionPriority] as int?;
|
|
final bitcoinTransactionPriority = data[PreferencesKey.bitcoinTransactionPriority] as int?;
|
|
|
|
await _sharedPreferences.setString(PreferencesKey.currentWalletName,
|
|
currentWalletName);
|
|
|
|
if (currentNodeId != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.currentNodeIdKey,
|
|
currentNodeId);
|
|
|
|
if (currentBalanceDisplayMode != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.currentBalanceDisplayModeKey,
|
|
currentBalanceDisplayMode);
|
|
|
|
await _sharedPreferences.setInt(PreferencesKey.currentWalletType,
|
|
currentWalletType);
|
|
|
|
if (currentFiatCurrency != null)
|
|
await _sharedPreferences.setString(PreferencesKey.currentFiatCurrencyKey,
|
|
currentFiatCurrency);
|
|
|
|
if (shouldSaveRecipientAddress != null)
|
|
await _sharedPreferences.setBool(
|
|
PreferencesKey.shouldSaveRecipientAddressKey,
|
|
shouldSaveRecipientAddress);
|
|
|
|
if (currentTransactionPriorityKeyLegacy != null)
|
|
await _sharedPreferences.setInt(
|
|
PreferencesKey.currentTransactionPriorityKeyLegacy,
|
|
currentTransactionPriorityKeyLegacy);
|
|
|
|
if (allowBiometricalAuthentication != null)
|
|
await _sharedPreferences.setBool(
|
|
PreferencesKey.allowBiometricalAuthenticationKey,
|
|
allowBiometricalAuthentication);
|
|
|
|
if (currentBitcoinElectrumSererId != null)
|
|
await _sharedPreferences.setInt(
|
|
PreferencesKey.currentBitcoinElectrumSererIdKey,
|
|
currentBitcoinElectrumSererId);
|
|
|
|
if (currentLanguageCode != null)
|
|
await _sharedPreferences.setString(PreferencesKey.currentLanguageCode,
|
|
currentLanguageCode);
|
|
|
|
if (displayActionListMode != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.displayActionListModeKey,
|
|
displayActionListMode);
|
|
|
|
if (fiatApiMode != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.currentFiatApiModeKey,
|
|
fiatApiMode);
|
|
|
|
if (currentPinLength != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.currentPinLength,
|
|
currentPinLength);
|
|
|
|
if (currentTheme != null)
|
|
await _sharedPreferences.setInt(
|
|
PreferencesKey.currentTheme, currentTheme);
|
|
|
|
if (currentDefaultSettingsMigrationVersion != null)
|
|
await _sharedPreferences.setInt(
|
|
PreferencesKey.currentDefaultSettingsMigrationVersion,
|
|
currentDefaultSettingsMigrationVersion);
|
|
|
|
if (moneroTransactionPriority != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.moneroTransactionPriority,
|
|
moneroTransactionPriority);
|
|
|
|
if (bitcoinTransactionPriority != null)
|
|
await _sharedPreferences.setInt(PreferencesKey.bitcoinTransactionPriority,
|
|
bitcoinTransactionPriority);
|
|
|
|
await preferencesFile.delete();
|
|
}
|
|
|
|
Future<void> _importKeychainDumpV1(String password,
|
|
{required String nonce,
|
|
String keychainSalt = secrets.backupKeychainSalt}) async {
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
final keychainDumpFile = File('${appDir.path}/~_keychain_dump');
|
|
final decryptedKeychainDumpFileData = await _decryptV1(
|
|
keychainDumpFile.readAsBytesSync(), '$keychainSalt$password', nonce);
|
|
final keychainJSON = json.decode(utf8.decode(decryptedKeychainDumpFileData))
|
|
as Map<String, dynamic>;
|
|
final keychainWalletsInfo = keychainJSON['wallets'] as List;
|
|
final decodedPin = keychainJSON['pin'] as String;
|
|
final pinCodeKey = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword);
|
|
final backupPasswordKey =
|
|
generateStoreKeyFor(key: SecretStoreKey.backupPassword);
|
|
final backupPassword = keychainJSON[backupPasswordKey] as String;
|
|
|
|
await _flutterSecureStorage.write(
|
|
key: backupPasswordKey, value: backupPassword);
|
|
|
|
keychainWalletsInfo.forEach((dynamic rawInfo) async {
|
|
final info = rawInfo as Map<String, dynamic>;
|
|
await importWalletKeychainInfo(info);
|
|
});
|
|
|
|
await _flutterSecureStorage.write(
|
|
key: pinCodeKey, value: encodedPinCode(pin: decodedPin));
|
|
|
|
keychainDumpFile.deleteSync();
|
|
}
|
|
|
|
Future<void> _importKeychainDumpV2(String password,
|
|
{String keychainSalt = secrets.backupKeychainSalt}) async {
|
|
final appDir = await getApplicationDocumentsDirectory();
|
|
final keychainDumpFile = File('${appDir.path}/~_keychain_dump');
|
|
final decryptedKeychainDumpFileData = await _decryptV2(
|
|
keychainDumpFile.readAsBytesSync(), '$keychainSalt$password');
|
|
final keychainJSON = json.decode(utf8.decode(decryptedKeychainDumpFileData))
|
|
as Map<String, dynamic>;
|
|
final keychainWalletsInfo = keychainJSON['wallets'] as List;
|
|
final decodedPin = keychainJSON['pin'] as String;
|
|
final pinCodeKey = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword);
|
|
final backupPasswordKey =
|
|
generateStoreKeyFor(key: SecretStoreKey.backupPassword);
|
|
final backupPassword = keychainJSON[backupPasswordKey] as String;
|
|
|
|
await _flutterSecureStorage.write(
|
|
key: backupPasswordKey, value: backupPassword);
|
|
|
|
keychainWalletsInfo.forEach((dynamic rawInfo) async {
|
|
final info = rawInfo as Map<String, dynamic>;
|
|
await importWalletKeychainInfo(info);
|
|
});
|
|
|
|
await _flutterSecureStorage.write(
|
|
key: pinCodeKey, value: encodedPinCode(pin: decodedPin));
|
|
|
|
keychainDumpFile.deleteSync();
|
|
}
|
|
|
|
Future<void> importWalletKeychainInfo(Map<String, dynamic> info) async {
|
|
final name = info['name'] as String;
|
|
final password = info['password'] as String;
|
|
|
|
await _keyService.saveWalletPassword(walletName: name, password: password);
|
|
}
|
|
|
|
@Deprecated('Use v2 instead')
|
|
Future<Uint8List> _exportKeychainDumpV1(String password,
|
|
{required String nonce,
|
|
String keychainSalt = secrets.backupKeychainSalt}) async
|
|
=> throw Exception('Deprecated');
|
|
|
|
Future<Uint8List> _exportKeychainDumpV2(String password,
|
|
{String keychainSalt = secrets.backupKeychainSalt}) async {
|
|
final key = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword);
|
|
final encodedPin = await _flutterSecureStorage.read(key: key);
|
|
final decodedPin = decodedPinCode(pin: encodedPin!);
|
|
final wallets =
|
|
await Future.wait(_walletInfoSource.values.map((walletInfo) async {
|
|
return {
|
|
'name': walletInfo.name,
|
|
'type': walletInfo.type.toString(),
|
|
'password':
|
|
await _keyService.getWalletPassword(walletName: walletInfo.name)
|
|
};
|
|
}));
|
|
final backupPasswordKey =
|
|
generateStoreKeyFor(key: SecretStoreKey.backupPassword);
|
|
final backupPassword =
|
|
await _flutterSecureStorage.read(key: backupPasswordKey);
|
|
final data = utf8.encode(json.encode({
|
|
'pin': decodedPin,
|
|
'wallets': wallets,
|
|
backupPasswordKey: backupPassword
|
|
}));
|
|
final encrypted = await _encryptV2(
|
|
Uint8List.fromList(data), '$keychainSalt$password');
|
|
|
|
return encrypted;
|
|
}
|
|
|
|
Future<String> _exportPreferencesJSON() async {
|
|
final preferences = <String, dynamic>{
|
|
PreferencesKey.currentWalletName:
|
|
_sharedPreferences.getString(PreferencesKey.currentWalletName),
|
|
PreferencesKey.currentNodeIdKey:
|
|
_sharedPreferences.getInt(PreferencesKey.currentNodeIdKey),
|
|
PreferencesKey.currentBalanceDisplayModeKey: _sharedPreferences
|
|
.getInt(PreferencesKey.currentBalanceDisplayModeKey),
|
|
PreferencesKey.currentWalletType:
|
|
_sharedPreferences.getInt(PreferencesKey.currentWalletType),
|
|
PreferencesKey.currentFiatCurrencyKey:
|
|
_sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey),
|
|
PreferencesKey.shouldSaveRecipientAddressKey: _sharedPreferences
|
|
.getBool(PreferencesKey.shouldSaveRecipientAddressKey),
|
|
PreferencesKey.isDarkThemeLegacy:
|
|
_sharedPreferences.getBool(PreferencesKey.isDarkThemeLegacy),
|
|
PreferencesKey.currentPinLength:
|
|
_sharedPreferences.getInt(PreferencesKey.currentPinLength),
|
|
PreferencesKey.currentTransactionPriorityKeyLegacy: _sharedPreferences
|
|
.getInt(PreferencesKey.currentTransactionPriorityKeyLegacy),
|
|
PreferencesKey.allowBiometricalAuthenticationKey: _sharedPreferences
|
|
.getBool(PreferencesKey.allowBiometricalAuthenticationKey),
|
|
PreferencesKey.currentBitcoinElectrumSererIdKey: _sharedPreferences
|
|
.getInt(PreferencesKey.currentBitcoinElectrumSererIdKey),
|
|
PreferencesKey.currentLanguageCode:
|
|
_sharedPreferences.getString(PreferencesKey.currentLanguageCode),
|
|
PreferencesKey.displayActionListModeKey:
|
|
_sharedPreferences.getInt(PreferencesKey.displayActionListModeKey),
|
|
PreferencesKey.currentTheme:
|
|
_sharedPreferences.getInt(PreferencesKey.currentTheme),
|
|
PreferencesKey.currentDefaultSettingsMigrationVersion: _sharedPreferences
|
|
.getInt(PreferencesKey.currentDefaultSettingsMigrationVersion),
|
|
PreferencesKey.bitcoinTransactionPriority:
|
|
_sharedPreferences.getInt(PreferencesKey.bitcoinTransactionPriority),
|
|
PreferencesKey.moneroTransactionPriority:
|
|
_sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority),
|
|
PreferencesKey.currentFiatApiModeKey:
|
|
_sharedPreferences.getInt(PreferencesKey.currentFiatApiModeKey),
|
|
};
|
|
|
|
return json.encode(preferences);
|
|
}
|
|
|
|
int getVersion(Uint8List data) => data.toList().first;
|
|
|
|
Uint8List setVersion(Uint8List data, int version) {
|
|
final bytes = data.toList()..insert(0, version);
|
|
return Uint8List.fromList(bytes);
|
|
}
|
|
|
|
@Deprecated('Use v2 instead')
|
|
Future<Uint8List> _encryptV1(
|
|
Uint8List data, String secretKeySource, String nonceBase64) async
|
|
=> throw Exception('Deprecated');
|
|
|
|
Future<Uint8List> _decryptV1(
|
|
Uint8List data, String secretKeySource, String nonceBase64, {int macLength = 16}) async {
|
|
final secretKeyHash = await Cryptography.instance.sha256().hash(utf8.encode(secretKeySource));
|
|
final secretKey = SecretKey(secretKeyHash.bytes);
|
|
final nonce = base64.decode(nonceBase64).toList();
|
|
final box = SecretBox(
|
|
Uint8List.sublistView(data, 0, data.lengthInBytes - macLength).toList(),
|
|
nonce: nonce,
|
|
mac: Mac(Uint8List.sublistView(data, data.lengthInBytes - macLength)));
|
|
final plainData = await _cipher.decrypt(box, secretKey: secretKey);
|
|
return Uint8List.fromList(plainData);
|
|
}
|
|
|
|
Future<Uint8List> _encryptV2(
|
|
Uint8List data, String passphrase) async
|
|
=> cake_backup.encrypt(passphrase, data, version: _v2);
|
|
|
|
Future<Uint8List> _decryptV2(
|
|
Uint8List data, String passphrase) async
|
|
=> cake_backup.decrypt(passphrase, data);
|
|
}
|