// Read scan mode radio button selection
private ScannerManagerSingleton.ScanMode ReadScanMode()
{
if (tcpModeRadioButton.Checked)
{
currentScanMode = ScannerManagerSingleton.ScanMode.TCP;
Logger.Info("Current Scan Mode: " + currentScanMode);
}
else
{
currentScanMode = ScannerManagerSingleton.ScanMode.UDP;
Logger.Info("Current Scan Mode: " + currentScanMode);
}
return(currentScanMode);
}
// Executed when the Check Port button is clicked
private void checkPortButton_Click(object sender, EventArgs e)
{
// Get user inputs
string hostname = hostnameTextBox.Text;
if (hostname == "")
{
MessageBox.Show("Please enter a valid hostname.",
"Input Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
hostnameTextBox.Focus();
return;
}
// Check port
int portMin = InputChecker.ParsePort(portTextBoxMin.Text);
if (portMin == -1)
{
MessageBox.Show((portRangeCheckBox.Checked ? "Lower limit of port range" : "Port") + " invalid.",
"Input Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
portTextBoxMin.Focus();
return;
}
// Get scan mode
ScannerManagerSingleton.ScanMode scanMode = ReadScanMode();
// If custom timeout time, verify correct user input
int timeout;
if (IsTimeoutComboBoxUserInput())
{
// If valid, proceed with that input as timeout
timeout = InputChecker.ParseTimeout(timeoutComboBox.Text);
if (timeout == -1)
{
MessageBox.Show("Timeout format: [time], [time]ms or [time] ms.\nTimeout must be between 250 ms and 20000 ms.",
"Timeout Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
return;
}
}
else
{
// Else, use the ValueMember of the selected Member
timeout = (int)timeoutComboBox.SelectedValue;
}
// Instantiate CTS
cts = new CancellationTokenSource();
// Simple one port check
if (!portRangeCheckBox.Checked)
{
// Set status box text
var connectionText = String.Format("Connecting to {0}, port {1}...{2}", hostname, portMin,
Environment.NewLine);
statusTextBox.AppendText(connectionText);
Logger.Info(connectionText);
// The callback for scan result
var callback = new ExecuteOnceAsyncCallback(PortResult);
// Send one check request and toggle user inputs
ToggleInputs(false);
smc.ExecuteOnceAsync(hostname, portMin, timeout, scanMode, callback, cts.Token);
}
// Port range check
else
{
// Verify input
int portMax = InputChecker.ParsePort(portTextBoxMax.Text);
if (portMax == -1)
{
MessageBox.Show("Upper limit of port range invalid.",
"Input Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
portTextBoxMax.Focus();
return;
}
if (portMax < portMin)
{
MessageBox.Show("Port range invalid.",
"Input Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
portTextBoxMax.Focus();
return;
}
// The callback for scan result
var callback = new ExecuteOnceAsyncCallback(PortResult);
// Set status box text
var connectionText = String.Format("Connecting to {0}, port {1}...{2}", hostname, portMin,
Environment.NewLine);
statusTextBox.AppendText(connectionText);
Logger.Info(connectionText);
// Toggle inputs and begin operation
ToggleInputs(false);
smc.ExecuteRangeAsync(hostname, portMin, portMax, timeout, scanMode, callback, cts.Token);
}
}