private List <string> ScanMethod(BackgroundWorker worker)
{
string line;
var timeElapsed = new Stopwatch();
timeElapsed.Start();
var log = new List <string>();
ScanMethodDelegate scan = null;
//Determining the appropriate delegate to use
switch (_scanMethod)
{
case "TCP Scan":
scan = new ScanMethodDelegate(TCPScan);
break;
case "UDP Scan":
scan = new ScanMethodDelegate(UDPScan);
break;
case "SYN Scan":
scan = new ScanMethodDelegate(SYNScan);
break;
}
log.Add("#Port Scanner/Sweeper Project, Version 0.1, June 2009" + "\n");
log.Add("#Scanner type used in current scan: " + _scannerType + "\n");
log.Add("#" + _scanMethod + " initiated at: " + DateTime.Now.ToString() + "\n");
if (_scannerType == "Port Scanner")
{
try
{
IPAddress hostAddress = Dns.GetHostEntry(textBox3.Text).AddressList[0];
for (int port = portFrom; port <= portTo; port++)
{
Thread.Sleep(Convert.ToInt32(textBox5.Text));
line = (PortOfHost(port, hostAddress, scan)) + "/" + IPPort.getDescription(port) + "\n";
percentComplete = (int)((float)(port - portFrom) / (float)(portTo - portFrom) * 100);
if (portFrom == portTo)
{
worker.ReportProgress(100);
}
else
{
worker.ReportProgress(percentComplete);
}
log.Add(line);
}
}
catch (SocketException ex)
{
log.Add("#Scan ended unexpectedly after " + timeElapsed.Elapsed.Seconds + " seconds.\n");
Console.WriteLine(ex.Message);
}
}
else
{
log.Add("Port sweeped: " + portFrom + "/" + IPPort.getDescription(portFrom) + "\n");
string[] addressList = Regex.Split(textBox3.Text.Trim(), " ");
int i = 0;
IPAddress hostAddress = null;
foreach (var address in addressList)
{
Thread.Sleep(Convert.ToInt32(textBox5.Text));
i++;
try
{
hostAddress = Dns.GetHostEntry(address).AddressList[0];
line = "Host " + address + ":\n the port";
line += (PortOfHost(portFrom, hostAddress, scan));
}
catch (SocketException ex)
{
line = address + " reports " + ex.Message + "\n";
}
percentComplete = i / (addressList.Length) * 100;
worker.ReportProgress(percentComplete);
log.Add(line);
}
}
timeElapsed.Stop();
log.Add("#Scan ended succesfully after " + timeElapsed.Elapsed.Minutes +
" minutes " + timeElapsed.Elapsed.Seconds + " seconds.\n");
return(log);
}
