fix(acceptor): raise credssp error to caller (#563)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Co-authored-by: Benoît Cortier <bcortier@proton.me>

crates/ironrdp-acceptor/src/lib.rs

@@ -172,16 +172,17 @@ where
         Ok(())
     }
 
-    let result = match credssp_loop(framed, acceptor, buf, client_computer_name, public_key, kerberos_config).await {
-        Ok(_) => EarlyUserAuthResult::Success,
-        Err(err) => {
-            warn!("credssp: {err}");
-            EarlyUserAuthResult::AccessDenied
-        }
-    };
+    let result = credssp_loop(framed, acceptor, buf, client_computer_name, public_key, kerberos_config).await;
 
     if protocol.intersects(nego::SecurityProtocol::HYBRID_EX) {
         trace!(?result, "HYBRID_EX");
+
+        let result = if result.is_ok() {
+            EarlyUserAuthResult::Success
+        } else {
+            EarlyUserAuthResult::AccessDenied
+        };
+
         buf.clear();
         result
             .to_buffer(&mut *buf)
@@ -192,6 +193,9 @@ where
             .await
             .map_err(|e| ironrdp_connector::custom_err!("write all", e))?;
     }
+
+    result?;
+
     acceptor.mark_credssp_as_done();
 
     Ok(())