private SnifferSettings LoadSettings(SnifferSettings settings, ICaptureDevice device)
{
if (device != null && _settings.filter != null && device.Filter != settings.filter)
{
device.StopCapture();
device.Filter = settings.filter;
device.StartCapture();
}
return(settings);
}
private void Run()
{
var settingsFileName = $"{AppDomain.CurrentDomain.FriendlyName}.json";
_settings = LoadSettings(settingsFileName);
WinPcapDevice device = null;
var devices = WinPcapDeviceList.Instance.Where(x => x.Addresses.Any(address => address.Addr.sa_family == AF_INET)).ToList();
if (_settings.DeviceIp.Equals(IPAddress.None))
{
var i = 0;
foreach (var dev in devices)
{
Console.WriteLine($"{i++}) {dev.Interface.FriendlyName} {dev.Description} ({string.Join(", ", dev.Addresses.Where(x => x.Addr.ipAddress != null).Select(x => x.Addr.ipAddress))})");
}
i = int.Parse(Console.ReadLine());
device = devices[i];
}
else
{
foreach (var dev in devices)
{
var address = GetIPV4SockAddr(dev);
if (address.Addr.ipAddress.Equals(_settings.DeviceIp))
{
device = dev;
Console.WriteLine($"Found device for {address.Addr.ipAddress}!");
break;
}
}
if (device == null)
{
Console.WriteLine($"Couldn't find device with address {_settings.deviceIp}.");
return;
}
}
if (device == null)
{
Console.WriteLine("Couldn't find specified device");
return;
}
device.OnPacketArrival += device_OnPacketArrival;
Console.WriteLine($"opening {device.Interface.FriendlyName}");
device.Open(DeviceMode.Promiscuous, 1000);
LoadSettings(_settings, device);
//todo add more commands, packetwatches esp.
var input = Console.ReadLine();
while (input != "quit")
{
var command = input.Split(" ")[0].ToLower();
var args = input.Split(" ").Skip(1).ToArray();
var rest = String.Join(" ", args);
switch (command)
{
case "filter":
_settings.filter = rest;
LoadSettings(_settings, device);
break;
case "load":
case "reload":
var fileName = !string.IsNullOrEmpty(rest) ? rest : settingsFileName;
_settings = LoadSettings(fileName);
Console.WriteLine($"Settings loaded from {fileName}!");
break;
case "save":
SaveSettings(settingsFileName, _settings);
Console.WriteLine($"Settings saved to {settingsFileName}!");
break;
}
if (_settings.autoSave)
{
SaveSettings(settingsFileName, _settings);
}
input = Console.ReadLine();
}
}
private void SaveSettings(string fileName, SnifferSettings settings)
{
var jsonSettings = JsonConvert.SerializeObject(_settings, Formatting.Indented);
File.WriteAllText(fileName, jsonSettings);
}
