private static void ModemPollingLoop()
{
//Find a port where the modem is at
_logger.Info("Searching for a modem...");
for (int i = 1; i <= 256; i++)
{
if (TestConnection($"COM{i}"))
{
break;
}
}
if (_comm.IsOpen() && _comm.IsConnected())
{
_logger.Info("Modem found");
_logger.Info("Setting modem settings...");
_comm.SelectCharacterSet("ucs2"); //Use UTF-16 encoding when getting data from modem
//Hook debugging event if user wants to debug modem commands
if (_config.GetValue("Debug/ModemCommands", false))
{
_comm.LoglineAdded += comm_LoglineAdded;
}
try
{
_comm.SetSmscAddress(_config.GetValue("General/SMSCenter", ""));
}
catch (Exception)
{
_logger.Warn("Invalid SMS Center number or this feature is not supported by current modem");
}
_logger.Info("Listening for incoming messages...");
while (_comm.IsOpen())
{
if (_comm.IsConnected())
{
try
{
//Get all messages saved on SIM
DecodedShortMessage[] messages = _comm.ReadMessages(PhoneMessageStatus.All,
PhoneStorageType.Sim);
foreach (DecodedShortMessage message in messages)
{
SmsPdu pdu = message.Data;
if (pdu is SmsDeliverPdu) // Check if it's SMS and not some kind of a service message
{
SmsDeliverPdu data = (SmsDeliverPdu)pdu;
_logger.Debug($"Received message from {data.OriginatingAddress}: " +
data.UserDataText + $" [TIMESTAMP: {data.SCTimestamp.ToSortableString()}]");
ChangePassword(data.OriginatingAddress, data.UserDataText);
//Delete message so it won't be parsed again
//and so we don't have a problem with free space on SIM
//in the future
_comm.DeleteMessage(message.Index, message.Storage);
}
else
{
_logger.Warn($"Received unknown message type: {pdu.GetType()}");
}
}
}
catch (Exception ex)
{
_logger.Warn($"Cannot read messages: {ex.Message} ({ex.GetType()})");
break;
}
//Sleep 5 seconds between message checks
Thread.Sleep(5000);
}
else
{
_logger.Error("Lost cellular network connection");
break;
}
}
}
else
{
_logger.Fatal("No modem found");
}
//Close modem connection
try
{
_comm.Close();
}
catch (Exception) { }
}