Add ConnectedToWifi.

internal/platform/implementation/linux/wifi_hotspot.cc

@@ -269,8 +269,8 @@ bool NetworkManagerWifiHotspotMedium::ConnectWifiHotspot(
 }
 
 bool NetworkManagerWifiHotspotMedium::DisconnectWifiHotspot() {
-  if (!WifiHotspotActive()) {
-    NEARBY_LOGS(ERROR) << __func__ << ": WiFi hotspot is not active";
+  if (!ConnectedToWifi()) {
+    NEARBY_LOGS(ERROR) << __func__ << ": Not connected to a WiFi hotspot";
     return false;
   }
 
@@ -299,5 +299,15 @@ bool NetworkManagerWifiHotspotMedium::WifiHotspotActive() {
   }
 }
 
+bool NetworkManagerWifiHotspotMedium::ConnectedToWifi() {
+  try {
+    auto mode = wireless_device_->Mode();
+    return mode == 2; // NM_802_11_MODE_INFRA
+  } catch (const sdbus::Error &e) {
+    DBUS_LOG_PROPERTY_GET_ERROR(wireless_device_, "Mode", e);
+    return false;
+  }
+}
+
 } // namespace linux
 } // namespace nearby

internal/platform/implementation/linux/wifi_hotspot.h

@@ -47,6 +47,7 @@ public:
 
 private:
   bool WifiHotspotActive();
+  bool ConnectedToWifi();
 
   sdbus::IConnection &system_bus_;
   std::unique_ptr<NetworkManagerWifiMedium> wireless_device_;