From 4f74acba76ad8a9da3bc41719b71ede3ec4d3cc4 Mon Sep 17 00:00:00 2001
From: csf <csf@breakbeat.cn>
Date: Wed, 21 Dec 2022 15:14:43 +0900
Subject: [PATCH] add ServerConfig, update server config import and export

---
 flutter/lib/common.dart                       | 39 +++++++++++++++
 .../desktop/pages/desktop_setting_page.dart   | 47 +++++++++----------
 2 files changed, 62 insertions(+), 24 deletions(-)

diff --git a/flutter/lib/common.dart b/flutter/lib/common.dart
index 15d058b87..8e8e50ae9 100644
--- a/flutter/lib/common.dart
+++ b/flutter/lib/common.dart
@@ -1510,3 +1510,42 @@ Pointer<win32.OSVERSIONINFOEX> getOSVERSIONINFOEXPointer() {
 bool get kUseCompatibleUiMode =>
     Platform.isWindows &&
     const [WindowsTarget.w7].contains(windowsBuildNumber.windowsVersion);
+
+class ServerConfig {
+  late String idServer;
+  late String relayServer;
+  late String apiServer;
+  late String key;
+
+  ServerConfig(
+      {String? idServer, String? relayServer, String? apiServer, String? key}) {
+    this.idServer = idServer?.trim() ?? '';
+    this.relayServer = relayServer?.trim() ?? '';
+    this.apiServer = apiServer?.trim() ?? '';
+    this.key = key?.trim() ?? '';
+  }
+
+  /// throw decoding failure
+  ServerConfig.decode(String msg) {
+    final input = msg.split('').reversed.join('');
+    final bytes = base64Decode(base64.normalize(input));
+    final json = jsonDecode(utf8.decode(bytes));
+
+    idServer = json['host'] ?? '';
+    relayServer = json['relay'] ?? '';
+    apiServer = json['api'] ?? '';
+    key = json['key'] ?? '';
+  }
+
+  String encode() {
+    Map<String, String> config = {};
+    config['host'] = idServer.trim();
+    config['relay'] = relayServer.trim();
+    config['api'] = apiServer.trim();
+    config['key'] = key.trim();
+    return base64Encode(Uint8List.fromList(jsonEncode(config).codeUnits))
+        .split('')
+        .reversed
+        .join();
+  }
+}
diff --git a/flutter/lib/desktop/pages/desktop_setting_page.dart b/flutter/lib/desktop/pages/desktop_setting_page.dart
index 613f19810..a45de24b0 100644
--- a/flutter/lib/desktop/pages/desktop_setting_page.dart
+++ b/flutter/lib/desktop/pages/desktop_setting_page.dart
@@ -958,23 +958,17 @@ class _NetworkState extends State<_Network> with AutomaticKeepAliveClientMixin {
 
       import() {
         Clipboard.getData(Clipboard.kTextPlain).then((value) {
-          TextEditingController mytext = TextEditingController();
-          String? aNullableString = '';
-          aNullableString = value?.text;
-          mytext.text = aNullableString.toString();
-          if (mytext.text.isNotEmpty) {
+          final text = value?.text;
+          if (text != null && text.isNotEmpty) {
             try {
-              Map<String, dynamic> config = jsonDecode(mytext.text);
-              if (config.containsKey('IdServer')) {
-                String id = config['IdServer'] ?? '';
-                String relay = config['RelayServer'] ?? '';
-                String api = config['ApiServer'] ?? '';
-                String key = config['Key'] ?? '';
-                idController.text = id;
-                relayController.text = relay;
-                apiController.text = api;
-                keyController.text = key;
-                Future<bool> success = set(id, relay, api, key);
+              final sc = ServerConfig.decode(text);
+              if (sc.idServer.isNotEmpty) {
+                idController.text = sc.idServer;
+                relayController.text = sc.relayServer;
+                apiController.text = sc.apiServer;
+                keyController.text = sc.key;
+                Future<bool> success =
+                    set(sc.idServer, sc.relayServer, sc.apiServer, sc.key);
                 success.then((value) {
                   if (value) {
                     showToast(
@@ -996,12 +990,15 @@ class _NetworkState extends State<_Network> with AutomaticKeepAliveClientMixin {
       }
 
       export() {
-        Map<String, String> config = {};
-        config['IdServer'] = idController.text.trim();
-        config['RelayServer'] = relayController.text.trim();
-        config['ApiServer'] = apiController.text.trim();
-        config['Key'] = keyController.text.trim();
-        Clipboard.setData(ClipboardData(text: jsonEncode(config)));
+        final text = ServerConfig(
+                idServer: idController.text,
+                relayServer: relayController.text,
+                apiServer: apiController.text,
+                key: keyController.text)
+            .encode();
+        debugPrint("ServerConfig export: $text");
+
+        Clipboard.setData(ClipboardData(text: text));
         showToast(translate('Export server configuration successfully'));
       }
 
@@ -1106,8 +1103,10 @@ class _AboutState extends State<_About> {
                   const SizedBox(
                     height: 8.0,
                   ),
-                  Text(translate('Version') + ': $version').marginSymmetric(vertical: 4.0),
-                  Text(translate('Build Date') + ': $buildDate').marginSymmetric(vertical: 4.0),
+                  Text(translate('Version') + ': $version')
+                      .marginSymmetric(vertical: 4.0),
+                  Text(translate('Build Date') + ': $buildDate')
+                      .marginSymmetric(vertical: 4.0),
                   InkWell(
                       onTap: () {
                         launchUrlString('https://rustdesk.com/privacy');