mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-12-28 14:29:22 +00:00
324 lines
9.4 KiB
Dart
324 lines
9.4 KiB
Dart
/*
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* This file is part of Stack Wallet.
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*
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* Copyright (c) 2023 Cypher Stack
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* All Rights Reserved.
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* The code is distributed under GPLv3 license, see LICENSE file for details.
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* Generated by Cypher Stack on 2023-05-26
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*
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*/
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import 'dart:convert';
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import 'dart:io';
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import 'package:archive/archive_io.dart';
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import 'package:crypto/crypto.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:isar/isar.dart';
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import 'package:stackwallet/db/isar/main_db.dart';
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import 'package:stackwallet/models/isar/stack_theme.dart';
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import 'package:stackwallet/networking/http.dart';
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import 'package:stackwallet/services/tor_service.dart';
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import 'package:stackwallet/utilities/logger.dart';
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import 'package:stackwallet/utilities/prefs.dart';
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import 'package:stackwallet/utilities/stack_file_system.dart';
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final pThemeService = Provider<ThemeService>((ref) {
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return ThemeService.instance;
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});
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class ThemeService {
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static const _currentDefaultThemeVersion = 8;
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ThemeService._();
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static ThemeService? _instance;
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static ThemeService get instance => _instance ??= ThemeService._();
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static const String baseServerUrl = "https://themes.stackwallet.com";
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MainDB? _db;
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MainDB get db => _db!;
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void init(MainDB db) => _db ??= db;
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HTTP client = HTTP();
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Future<void> install({required Uint8List themeArchiveData}) async {
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final themesDir = StackFileSystem.themesDir!;
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final archive = ZipDecoder().decodeBytes(themeArchiveData);
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final themeJsonFiles = archive.files.where((e) => e.name == "theme.json");
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if (themeJsonFiles.length != 1) {
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throw Exception("Invalid theme archive: Missing theme.json");
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}
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final jsonString = utf8.decode(themeJsonFiles.first.content as List<int>);
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final json = jsonDecode(jsonString) as Map;
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final theme = StackTheme.fromJson(
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json: Map<String, dynamic>.from(json),
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);
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try {
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theme.assets;
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} catch (_) {
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throw Exception("Invalid theme: Failed to create assets object");
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}
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final String assetsPath = "${themesDir.path}/${theme.themeId}";
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for (final file in archive.files) {
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if (file.isFile) {
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// TODO more sanitation?
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if (file.name.contains("..")) {
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Logging.instance.log(
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"Bad theme asset file path: ${file.name}",
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level: LogLevel.Error,
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);
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} else {
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final os = OutputFileStream("$assetsPath/${file.name}");
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file.writeContent(os);
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await os.close();
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}
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}
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}
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await db.isar.writeTxn(() async {
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await db.isar.stackThemes.put(theme);
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});
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}
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Future<void> remove({required String themeId}) async {
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final themesDir = StackFileSystem.themesDir!;
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final isarId = await db.isar.stackThemes
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.where()
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.themeIdEqualTo(themeId)
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.idProperty()
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.findFirst();
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if (isarId != null) {
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await db.isar.writeTxn(() async {
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await db.isar.stackThemes.delete(isarId);
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});
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final dir = Directory("${themesDir.path}/$themeId");
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if (dir.existsSync()) {
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await dir.delete(recursive: true);
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}
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} else {
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Logging.instance.log(
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"Failed to delete theme $themeId",
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level: LogLevel.Warning,
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);
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}
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}
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Future<void> checkDefaultThemesOnStartup() async {
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// install default themes
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if (!(await ThemeService.instance.verifyInstalled(themeId: "light"))) {
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Logging.instance.log(
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"Installing default light theme...",
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level: LogLevel.Info,
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);
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final lightZip = await rootBundle.load("assets/default_themes/light.zip");
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await ThemeService.instance
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.install(themeArchiveData: lightZip.buffer.asUint8List());
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Logging.instance.log(
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"Installing default light theme... finished",
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level: LogLevel.Info,
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);
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} else {
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// check installed version
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final theme = ThemeService.instance.getTheme(themeId: "light");
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if ((theme?.version ?? 1) < _currentDefaultThemeVersion) {
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Logging.instance.log(
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"Updating default light theme...",
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level: LogLevel.Info,
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);
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final lightZip =
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await rootBundle.load("assets/default_themes/light.zip");
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await ThemeService.instance
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.install(themeArchiveData: lightZip.buffer.asUint8List());
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Logging.instance.log(
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"Updating default light theme... finished",
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level: LogLevel.Info,
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);
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}
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}
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if (!(await ThemeService.instance.verifyInstalled(themeId: "dark"))) {
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Logging.instance.log(
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"Installing default dark theme... ",
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level: LogLevel.Info,
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);
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final darkZip = await rootBundle.load("assets/default_themes/dark.zip");
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await ThemeService.instance
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.install(themeArchiveData: darkZip.buffer.asUint8List());
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Logging.instance.log(
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"Installing default dark theme... finished",
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level: LogLevel.Info,
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);
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} else {
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// check installed version
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// final theme = ThemeService.instance.getTheme(themeId: "dark");
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// Force update theme to add missing icons for now
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// TODO: uncomment if statement in future when themes are version 4 or above
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// if ((theme?.version ?? 1) < _currentDefaultThemeVersion) {
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Logging.instance.log(
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"Updating default dark theme...",
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level: LogLevel.Info,
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);
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final darkZip = await rootBundle.load("assets/default_themes/dark.zip");
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await ThemeService.instance
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.install(themeArchiveData: darkZip.buffer.asUint8List());
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Logging.instance.log(
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"Updating default dark theme... finished",
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level: LogLevel.Info,
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);
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// }
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}
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}
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// TODO more thorough check/verification of theme
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Future<bool> verifyInstalled({required String themeId}) async {
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final theme =
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await db.isar.stackThemes.where().themeIdEqualTo(themeId).findFirst();
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if (theme != null) {
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try {
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theme.assets;
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} catch (_) {
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return false;
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}
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final themesDir = StackFileSystem.themesDir!;
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final jsonFileExists =
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await File("${themesDir.path}/$themeId/theme.json").exists();
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final assetsDirExists =
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await Directory("${themesDir.path}/$themeId/assets").exists();
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if (!jsonFileExists || !assetsDirExists) {
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Logging.instance.log(
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"Theme $themeId found in DB but is missing files",
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level: LogLevel.Warning,
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);
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}
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return jsonFileExists && assetsDirExists;
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} else {
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return false;
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}
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}
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Future<List<StackThemeMetaData>> fetchThemes() async {
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try {
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final response = await client.get(
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url: Uri.parse("$baseServerUrl/themes"),
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proxyInfo: Prefs.instance.useTor
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? TorService.sharedInstance.getProxyInfo()
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: null,
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);
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final jsonList = jsonDecode(response.body) as List;
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final result = List<Map<String, dynamic>>.from(jsonList)
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.map((e) => StackThemeMetaData.fromMap(e))
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.where((e) => e.id != "light" && e.id != "dark")
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.toList();
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return result;
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} catch (e, s) {
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Logging.instance.log(
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"Failed to fetch themes list: $e\n$s",
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level: LogLevel.Warning,
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);
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rethrow;
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}
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}
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Future<Uint8List> fetchTheme({
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required StackThemeMetaData themeMetaData,
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}) async {
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try {
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final response = await client.get(
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url: Uri.parse("$baseServerUrl/theme/${themeMetaData.id}"),
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proxyInfo: Prefs.instance.useTor
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? TorService.sharedInstance.getProxyInfo()
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: null,
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);
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final bytes = Uint8List.fromList(response.bodyBytes);
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// verify hash
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final digest = sha256.convert(bytes);
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if (digest.toString() == themeMetaData.sha256) {
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return bytes;
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} else {
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throw Exception(
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"Fetched theme archive sha256 hash ($digest) does not"
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" match requested $themeMetaData",
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);
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}
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} catch (e, s) {
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Logging.instance.log(
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"Failed to fetch themes list: $e\n$s",
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level: LogLevel.Warning,
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);
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rethrow;
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}
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}
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StackTheme? getTheme({required String themeId}) =>
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db.isar.stackThemes.where().themeIdEqualTo(themeId).findFirstSync();
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List<StackTheme> get installedThemes =>
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db.isar.stackThemes.where().findAllSync();
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}
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class StackThemeMetaData {
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final String name;
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final String id;
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final int version;
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final String sha256;
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final String size;
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final String previewImageUrl;
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StackThemeMetaData({
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required this.name,
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required this.id,
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required this.version,
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required this.sha256,
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required this.size,
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required this.previewImageUrl,
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});
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static StackThemeMetaData fromMap(Map<String, dynamic> map) {
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try {
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return StackThemeMetaData(
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name: map["name"] as String,
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id: map["id"] as String,
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version: map["version"] as int? ?? 1,
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sha256: map["sha256"] as String,
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size: map["size"] as String,
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previewImageUrl: map["previewImageUrl"] as String,
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);
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} catch (e, s) {
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Logging.instance.log(
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"Failed to create instance of StackThemeMetaData using $map: \n$e\n$s",
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level: LogLevel.Fatal,
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);
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rethrow;
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}
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}
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@override
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String toString() {
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return "$runtimeType("
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"name: $name, "
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"id: $id, "
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"version: $version, "
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"sha256: $sha256, "
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"size: $size, "
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"previewImageUrl: $previewImageUrl"
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")";
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}
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}
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