private void SetupSniffer()
{
if (!_sniffer.AvailiableDevicesNames.Contains(_cliFlags.CaptureDevice))
{
CliPrinter.Error($"No such device: {_cliFlags.CaptureDevice}");
Environment.Exit(0);
}
_sniffer.SelectedDeviceName = _cliFlags.CaptureDevice;
if (_cliFlags.PromisciousMode)
{
_sniffer.PromisciousMode = true;
}
if (_cliFlags.CaptrueFilter != null)
{
if (!Sniffer.CheckCaptureFilter(_cliFlags.CaptrueFilter))
{
CliPrinter.Error($"The capture filter: {_cliFlags.CaptrueFilter} is not a valid filter - filters must be in a bpf format");
Environment.Exit(0);
}
_sniffer.Filter = _cliFlags.CaptrueFilter;
}
}
private void filterTextBox_TextChanged(object sender, EventArgs e)
{
if (Sniffer.CheckCaptureFilter(filterTextBox.Text))
{
filterTextBox.BackColor = Color.LightBlue;
}
else
{
filterTextBox.BackColor = Color.LightCoral;
}
}
private void VerifyFilter(string filter)
{
if (Sniffer.CheckCaptureFilter(filter))
{
_sniffer.Filter = filter;
}
else
{
Console.WriteLine($"Capture filter: {filter} is not a valid filter, filters must be in bpf format");
}
}
private void LiveCaptureButton_Click(object sender, EventArgs e)
{
if (this.interfacesComboBox.SelectedItem == null)
{
MessageBox.Show("No interface selected");
return;
}
if (filterTextBox.Text != string.Empty && filterTextBox.Text != "<INSERT BPF FILTER HERE>")
{
if (Sniffer.CheckCaptureFilter(filterTextBox.Text))
{
_sniffer.Filter = filterTextBox.Text;
}
else
{
MessageBox.Show("Invalid BPF filter! please fix filter");
return;
}
}
_sniffer.SelectedDeviceName = this.interfacesComboBox.SelectedItem.ToString();
StartLiveCaptureAsync();
}
