fix: add localservice ACL preflight

apps/desktop/src-tauri/src/rustdesk.rs

@@ -379,7 +379,7 @@ fn ensure_service_running() -> Result<(), RustdeskError> {
 
     match start_sequence() {
         Ok(_) => Ok(()),
-        Err(RustdeskError::CommandFailed { command, status: Some(5), .. }) => {
+        Err(RustdeskError::CommandFailed { command: _, status: Some(5), .. }) => {
             log_event("SC retornou acesso negado; tentando ajustar ACL do LocalService...");
             fix_localservice_acl().map_err(|error| RustdeskError::CommandFailed {
                 command: format!("fix_acl ({error})"),
@@ -584,8 +584,6 @@ fn replicate_password_artifacts() -> io::Result<()> {
 }
 
 fn run_powershell_elevated(script: &str) -> Result<(), String> {
-    use std::io::Write;
-
     let temp_dir = env::temp_dir();
     let payload = temp_dir.join("raven_payload.ps1");
     fs::write(&payload, script).map_err(|error| format!("write payload: {error}"))?;
@@ -644,6 +642,44 @@ icacls '{target}' /grant "${{admins}}":(OI)(CI)F "${{localSvc}}":(OI)(CI)F /T /C
     run_powershell_elevated(&script)
 }
 
+fn ensure_localservice_writable_preflight() -> Result<(), String> {
+    let dir = PathBuf::from(LOCAL_SERVICE_CONFIG);
+    if can_write_dir(&dir) {
+        return Ok(());
+    }
+    log_event("Tentando corrigir ACL do perfil LocalService via UAC (preflight)...");
+    fix_localservice_acl()?;
+    if can_write_dir(&dir) {
+        log_event("ACL do LocalService ajustada com sucesso.");
+        Ok(())
+    } else {
+        Err("continua sem permissão para LocalService (após preflight)".into())
+    }
+}
+
+fn can_write_dir(dir: &Path) -> bool {
+    if fs::create_dir_all(dir).is_err() {
+        return false;
+    }
+    let probe = dir.join(".raven_acl_probe");
+    match OpenOptions::new()
+        .create(true)
+        .write(true)
+        .truncate(true)
+        .open(&probe)
+    {
+        Ok(mut file) => {
+            if file.write_all(b"ok").is_err() {
+                let _ = fs::remove_file(&probe);
+                return false;
+            }
+            let _ = fs::remove_file(&probe);
+            true
+        }
+        Err(_) => false,
+    }
+}
+
 fn write_remote_id_value(path: &Path, id: &str) -> io::Result<()> {
     if let Some(parent) = path.parent() {
         fs::create_dir_all(parent)?;