create db when initialize

okapis · Mar 12, 2024 · 318b718 · 318b718
1 parent 6ebe094
commit 318b718
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Showing 8 changed files with 77 additions and 353 deletions.
diff --git a/editing/lib/config/meta.dart b/editing/lib/config/meta.dart
@@ -0,0 +1,11 @@
+import 'package:kdbx/kdbx.dart';
+
+class Meta {
+ final String appVersion;
+ final String sqlCipherVersion;
+ final String dbInstance;
+ final ProtectedValue dbEncryptionKey;
+
+ Meta(this.appVersion, this.sqlCipherVersion, this.dbInstance,
+ this.dbEncryptionKey);
+}
diff --git a/editing/lib/database/database.dart b/editing/lib/database/database.dart
@@ -1,10 +1,11 @@
 import 'dart:io';
 import 'dart:ffi';
 
+import 'package:convert/convert.dart';
 import 'package:drift/drift.dart';
 import 'package:drift/native.dart';
-import 'package:editing/common/uuid_util.dart';
-import 'package:editing/config/version.dart';
+import 'package:kdbx/kdbx.dart';
+import 'package:logger/logger.dart';
 import 'package:path/path.dart' as p;
 import 'package:path_provider/path_provider.dart';
 import 'package:sqlite3/open.dart';
@@ -13,42 +14,24 @@ import 'package:sqlcipher_flutter_libs/sqlcipher_flutter_libs.dart';
 // run `dart run build_runner build` to generate
 part 'database.g.dart';
 
-const _encryptionPassword = 'somepassword';
+final logger = Logger();
 
 @DriftDatabase(include: {'tables.drift'})
 class AppDb extends _$AppDb {
- AppDb() : super(_openDatabase());
  AppDb.from(QueryExecutor e) : super(e);
+ AppDb.open(String file, ProtectedValue password)
+ : super(_openDatabase(file, password));
 
  @override
  int get schemaVersion => 1;
 
- Future<void> _insertConfiguration(
- String key, String value, String createTime) async {
- await into(configuration).insert(ConfigurationData(
- name: key,
- value: value,
- createTime: createTime,
- lastUpdateTime: createTime,
- ));
- }
-
- Future<void> _inintConfiguration() async {
- final now = DateTime.now().toUtc().toIso8601String();
- await _insertConfiguration('APP_VERSION', APP_VERSION, now);
- await _insertConfiguration('SQLCIPHER_VERSION', SQLCIPHER_VERSION, now);
- await _insertConfiguration('SEED', UuidUtil.generateUUID(), now);
- }
-
  @override
  MigrationStrategy get migration {
  return MigrationStrategy(
  beforeOpen: (details) async {},
  onCreate: (Migrator m) async {
  await m.createAll();
- await transaction(() async {
- await _inintConfiguration();
- });
+ await transaction(() async {});
  },
  );
  }
@@ -63,11 +46,18 @@ void setupSqlCipher() {
  OperatingSystem.windows, () => DynamicLibrary.open('sqlcipher.dll'));
 }
 
-QueryExecutor _openDatabase() {
+QueryExecutor _openDatabase(String file, ProtectedValue key) {
+ if (key.binaryValue.length != 32) {
+ throw ArgumentError("SQL Cipher must use a key of 32 bytes");
+ }
  return LazyDatabase(() async {
  final path = await getApplicationDocumentsDirectory();
+ final realFile = File(p.join(path.path, file));
+ print("opening database ....$realFile");
+ logger.i("openning database:$realFile");
+
  return NativeDatabase.createInBackground(
- File(p.join(path.path, 'app.db.enc')),
+ realFile,
  isolateSetup: setupSqlCipher,
  setup: (rawDb) {
  final result = rawDb.select('pragma cipher_version');
@@ -85,8 +75,10 @@ QueryExecutor _openDatabase() {
  );
  }
  }
- final escapedKey = _encryptionPassword.replaceAll("'", "''");
- rawDb.execute("pragma key = '$escapedKey';");
+ // set key without key derivation:
+ // see: https://github.com/sqlcipher/sqlcipher/blob/master/README.md
+ // PRAGMA key = "x'2DD29CA851E7B56E4697B0E1F08507293D761A05CE4D1B628663F411A8086D99'";
+ rawDb.execute("pragma key = \"x'${hex.encode(key.binaryValue)}'\";");
  rawDb.execute('select count(*) from sqlite_master');
  },
  );