preset password warning

flutter/lib/desktop/pages/desktop_home_page.dart

@@ -75,11 +75,50 @@ class _DesktopHomePageState extends State<DesktopHomePage>
     );
   }
 
+  Widget buildPresetPasswordWarning() {
+    return FutureBuilder<bool>(
+      future: bind.isPresetPassword(),
+      builder: (BuildContext context, AsyncSnapshot<bool> snapshot) {
+        if (snapshot.connectionState == ConnectionState.waiting) {
+          return CircularProgressIndicator(); // Show a loading spinner while waiting for the Future to complete
+        } else if (snapshot.hasError) {
+          return Text(
+              'Error: ${snapshot.error}'); // Show an error message if the Future completed with an error
+        } else if (snapshot.hasData && snapshot.data == true) {
+          return Container(
+            color: Colors.yellow,
+            child: Column(
+              children: [
+                Align(
+                    child: Text(
+                  translate("Security Alert"),
+                  style: TextStyle(
+                    color: Colors.red,
+                    fontSize: 20,
+                    fontWeight: FontWeight.bold,
+                  ),
+                )).paddingOnly(bottom: 8),
+                Text(
+                  translate("preset_password_warning"),
+                  style: TextStyle(color: Colors.red),
+                )
+              ],
+            ).paddingAll(8),
+          ); // Show a warning message if the Future completed with true
+        } else {
+          return SizedBox
+              .shrink(); // Show nothing if the Future completed with false or null
+        }
+      },
+    );
+  }
+
   Widget buildLeftPane(BuildContext context) {
     final isIncomingOnly = bind.isIncomingOnly();
     final isOutgoingOnly = bind.isOutgoingOnly();
     final logo = loadLogo();
     final children = <Widget>[
+      if (!isOutgoingOnly) buildPresetPasswordWarning(),
       if (bind.isCustomClient())
         Align(
           alignment: Alignment.center,

libs/hbb_common/src/config.rs

@@ -954,6 +954,14 @@ impl Config {
     }
 
     pub fn set_permanent_password(password: &str) {
+        if HARD_SETTINGS
+            .read()
+            .unwrap()
+            .get("password")
+            .map_or(false, |v| v == password)
+        {
+            return;
+        }
         let mut config = CONFIG.write().unwrap();
         if password == config.password {
             return;

src/flutter_ffi.rs

@@ -1849,6 +1849,14 @@ pub fn is_disable_installation() -> SyncReturn<bool> {
     SyncReturn(config::is_disable_installation())
 }
 
+pub fn is_preset_password() -> bool {
+    config::HARD_SETTINGS
+        .read()
+        .unwrap()
+        .get("password")
+        .map_or(false, |p| p == &crate::ipc::get_permanent_password())
+}
+
 /// Send a url scheme throught the ipc.
 ///
 /// * macOS only

src/lang/en.rs

@@ -2,7 +2,6 @@ lazy_static::lazy_static! {
 pub static ref T: std::collections::HashMap<&'static str, &'static str> =
     [
         ("desk_tip", "Your desktop can be accessed with this ID and password."),
-        ("outgoing_only_desk_tip", "This is a customized edition.\nYou can connect to other devices, but other devices cannot connect to your device."),
         ("connecting_status", "Connecting to the RustDesk network..."),
         ("not_ready_status", "Not ready. Please check your connection"),
         ("ID/Relay Server", "ID/Relay server"),
@@ -215,5 +214,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("wrong-2fa-code", "Can't verify the code. Check that code and local time settings are correct"),
         ("enter-2fa-title", "Two-factor authentication"),
         ("powered_by_me", "Powered by RustDesk"),
+        ("outgoing_only_desk_tip", "This is a customized edition.\nYou can connect to other devices, but other devices cannot connect to your device."),
+        ("preset_password_warning", "This software uses a default password. Anyone knowing this password can gain full control of your device. If you did not expect this, uninstall the software immediately."),
     ].iter().cloned().collect();
 }

src/lang/template.rs

@@ -588,5 +588,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Please select the session you want to connect to", ""),
         ("powered_by_me", ""),
         ("outgoing_only_desk_tip", ""),
+        ("preset_password_warning", ""),
+        ("Security Alert", ""),
     ].iter().cloned().collect();
 }