klockky
c4eaae501b
- TLS: validate cert chain by default; debug-menu toggle to disable - Logs: redact secrets in sender/dispatcher payloads - Identity: per-install mt_instanceid/deviceId, per-launch clientSessionId
50 lines
1.6 KiB
Dart
50 lines
1.6 KiB
Dart
import 'dart:math';
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import 'package:shared_preferences/shared_preferences.dart';
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abstract class DeviceIdentity {
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static const String _instanceIdKey = 'mt_instance_id';
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static const String _deviceIdKey = 'device_id_local';
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static final Random _rng = Random.secure();
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static int? _clientSessionId;
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static int get clientSessionId =>
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_clientSessionId ??= _rng.nextInt(0x7FFFFFFF) + 1;
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static Future<String> instanceId() async {
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final prefs = await SharedPreferences.getInstance();
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final existing = prefs.getString(_instanceIdKey);
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if (existing != null && existing.isNotEmpty) return existing;
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final generated = _uuidV4();
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await prefs.setString(_instanceIdKey, generated);
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return generated;
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}
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static Future<String> deviceId() async {
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final prefs = await SharedPreferences.getInstance();
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final existing = prefs.getString(_deviceIdKey);
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if (existing != null && existing.isNotEmpty) return existing;
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final generated = _hex(8);
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await prefs.setString(_deviceIdKey, generated);
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return generated;
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}
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static String _hex(int bytes) {
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final sb = StringBuffer();
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for (var i = 0; i < bytes; i++) {
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sb.write(_rng.nextInt(256).toRadixString(16).padLeft(2, '0'));
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}
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return sb.toString();
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}
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static String _uuidV4() {
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final b = List<int>.generate(16, (_) => _rng.nextInt(256));
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b[6] = (b[6] & 0x0f) | 0x40;
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b[8] = (b[8] & 0x3f) | 0x80;
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String h(int i) => b[i].toRadixString(16).padLeft(2, '0');
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return '${h(0)}${h(1)}${h(2)}${h(3)}-${h(4)}${h(5)}-${h(6)}${h(7)}-'
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'${h(8)}${h(9)}-${h(10)}${h(11)}${h(12)}${h(13)}${h(14)}${h(15)}';
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}
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}
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