/// <summary>
/// Callback function for reacting to changes in wlan connectivity.
/// </summary>
/// <param name="notificationData">WLAN notification data structure containing details about the notification.</param>
/// <param name="context">Notification context, not used.</param>
public void WlanNotifyHook(ref WlanApi.WlanNotificationData notificationData, IntPtr context)
{
// Do not perform wlan detection if user's unsecure network alert setting is turned off.
if (!Manager.Settings.Network.UnsecureNetworkAlert)
{
return;
}
// If connected, ignore any and all messages
if (Manager.MainWindowViewModel.Status == Models.ConnectionState.Protected)
{
return;
}
const int clientVersion = 2;
if ((WlanApi.WlanNotificationMsm)notificationData.NotificationCode == WlanApi.WlanNotificationMsm.Connected)
{
if (WlanApi.WlanOpenHandle(clientVersion, IntPtr.Zero, out uint _, out IntPtr clientHandle) != 0)
{
ErrorHandling.ErrorHandler.Handle("Can't open Wlan handle for unsecured network detection.", ErrorHandling.LogLevel.Error);
return;
}
var queryData = IntPtr.Zero;
var wlanQueryResult = WlanApi.WlanQueryInterface(clientHandle, new Guid(notificationData.InterfaceGuid.ToString()), WlanApi.WlanIntfOpcode.CurrentConnection, IntPtr.Zero, out _, ref queryData, IntPtr.Zero);
if (wlanQueryResult == 0)
{
var connectionData = Marshal.PtrToStructure <WlanApi.WlanConnectionAttributes>(queryData);
// Detect open network or WEP secured network
if (connectionData.WlanSecurityAttributes.Dot11AuthAlgorithm == WlanApi.Dot11AuthAlgorithm.Open ||
(
connectionData.WlanSecurityAttributes.Dot11CipherAlgorithm == WlanApi.Dot11CipherAlgorithm.Wep ||
connectionData.WlanSecurityAttributes.Dot11CipherAlgorithm == WlanApi.Dot11CipherAlgorithm.Wep40 ||
connectionData.WlanSecurityAttributes.Dot11CipherAlgorithm == WlanApi.Dot11CipherAlgorithm.Wep104)
)
{
var showNotification = true;
var bSsid = connectionData.WlanAssociationAttributes.Dot11Bssid.ToString();
if (!accessPoints.ContainsKey(connectionData.WlanAssociationAttributes.Dot11Bssid.ToString()))
{
var newAp = new AccessPoint()
{
Ssid = connectionData.ProfileName,
Bssid = bSsid,
LastNotified = DateTime.UtcNow,
};
accessPoints[bSsid] = newAp;
}
else
{
if ((DateTime.UtcNow - accessPoints[bSsid].LastNotified).TotalSeconds < ProductConstants.InsecureWiFiTimeout)
{
showNotification = false;
}
var accessPoint = accessPoints[bSsid];
accessPoint.LastNotified = DateTime.UtcNow;
accessPoints[bSsid] = accessPoint;
}
if (showNotification)
{
Manager.TrayIcon.ShowNotification(
Manager.TranslationService.GetString("wifi-unsecure-network-detected-msg"),
string.Concat(Manager.TranslationService.GetString("wifi-network-unsecure-msg", UI.Resources.Localization.TranslationService.Args("wifiName", connectionData.WlanAssociationAttributes.Dot11Ssid.ToString())), " ", Manager.TranslationService.GetString("wifi-you-should-turn-on-msg")),
NotificationArea.ToastIconType.Disconnected
);
}
}
if (queryData != IntPtr.Zero)
{
WlanApi.WlanFreeMemory(queryData);
}
}
}
}
