wangjia
ebf79d0355
21D — 后端: - Claims 新增 LicenseExpiresAt (*int64 unix 秒)，写入 JWT 避免每次查库 - middleware/license_guard.go: CalcLicensePhase / LicenseGuard / GetLicensePhase - grace(0-7d): 允许通行 - readonly(7-15d): 拦截非 GET 写操作 → 403 - locked(15d+): 全部拦截 → 403 - auth.go: issueTokens 在 JWT 中嵌入 license expires_at；Login 检查 locked 拒绝登录 - router: license/* 路由豁免 LicenseGuard（锁定时仍可激活/查状态） 21E — Flutter 前端: - models/license.dart: 新 LicenseInfo，含 phase/maxDevices，去掉旧 activatedAt - core/device/device_id.dart: 持久化 UUID-v4 作为设备 ID（SharedPreferences） - repositories/license_repository.dart: getInfo/activate/deactivate，激活时携带设备信息 - providers/license_provider.dart: 改接 LicenseRepository - settings_screen.dart: activatedAt 改为显示 maxDevices Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
54 lines
1.7 KiB
Dart
54 lines
1.7 KiB
Dart
import 'dart:math';
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import 'package:flutter/foundation.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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const _kDeviceIdKey = 'device_id';
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/// Returns a stable device identifier persisted across app launches.
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/// On first call a random UUID-v4 is generated and stored in SharedPreferences.
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/// Follows the rule: check kIsWeb before dart:io.
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class DeviceId {
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static String? _cached;
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static Future<String> get() async {
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if (_cached != null) return _cached!;
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final prefs = await SharedPreferences.getInstance();
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var id = prefs.getString(_kDeviceIdKey);
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if (id == null || id.isEmpty) {
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id = _generateUuid();
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await prefs.setString(_kDeviceIdKey, id);
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}
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return _cached = id;
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}
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/// Best-effort platform name for display purposes.
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static String get platformName {
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if (kIsWeb) return 'web';
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// defaultTargetPlatform is safe on all platforms (no dart:io needed)
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switch (defaultTargetPlatform) {
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case TargetPlatform.windows:
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return 'windows';
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case TargetPlatform.macOS:
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return 'macos';
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case TargetPlatform.android:
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return 'android';
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case TargetPlatform.iOS:
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return 'ios';
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case TargetPlatform.linux:
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return 'linux';
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default:
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return 'unknown';
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}
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}
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static String _generateUuid() {
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final rng = Random.secure();
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final bytes = List<int>.generate(16, (_) => rng.nextInt(256));
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bytes[6] = (bytes[6] & 0x0f) | 0x40; // version 4
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bytes[8] = (bytes[8] & 0x3f) | 0x80; // variant
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final hex = bytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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return '${hex.substring(0, 8)}-${hex.substring(8, 12)}-'
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'${hex.substring(12, 16)}-${hex.substring(16, 20)}-${hex.substring(20)}';
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}
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}
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