protected override Packet ParsePayloadPacket(LogicalLayerControlPacket packet)
{
Packet payloadPacket = null;
if (packet.IsSnap)
{
if (packet.DestinationHardwareAddress.ToString().Equals(""))
{
if (packet.OrganizationIdentification == 12)
{
if (packet.ProtocolId == 8192)
{
payloadPacket = new CdpPacket();
}
}
}
}
return(payloadPacket);
}
public void ParseProtocol(Packet packet, StatisticsRecord statisticsRecord)
{
CdpPacket cdpPacket = (CdpPacket)packet;
statisticsRecord.NetworkInterfaceLayer = cdpPacket.GetType().Name.Replace("Packet", "");
}
static void Main(string[] args)
{
// Find all Ethernet adapters on the machine.
var ethernetInterfaces =
from
nic in NetworkInterface.GetAllNetworkInterfaces()
where
nic.OperationalStatus == OperationalStatus.Up &&
nic.NetworkInterfaceType == NetworkInterfaceType.Ethernet ||
nic.NetworkInterfaceType == NetworkInterfaceType.FastEthernetFx ||
nic.NetworkInterfaceType == NetworkInterfaceType.FastEthernetT ||
nic.NetworkInterfaceType == NetworkInterfaceType.GigabitEthernet
select
nic
;
JsonSerializerSettings serializerSettings =
new JsonSerializerSettings()
{
ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver(),
DateTimeZoneHandling = DateTimeZoneHandling.Utc,
NullValueHandling = NullValueHandling.Ignore
};
serializerSettings.Converters.Add(new IPAddressConverter());
serializerSettings.Converters.Add(new IPEndPointConverter());
var tasks = new List <Task>();
foreach (var nic in ethernetInterfaces)
{
Console.WriteLine("Starting CDP for interface " + nic.Name + " of type " + nic.NetworkInterfaceType.ToString());
Task.Factory.StartNew(
async() =>
{
var llcSocket = new LLCSocket(nic.GetPhysicalAddress());
llcSocket.RegisterMacOnInterface(nic.Name, CdpAddress);
while (true)
{
var packet = llcSocket.ReceiveFrom(out PhysicalAddress remoteHost);
CdpPacket parsed = null;
try
{
Console.WriteLine("Parsing packet");
parsed = CdpPacketParser.Parse(packet);
Console.WriteLine("Packet parsed");
}
catch (Exception e)
{
Console.WriteLine("Exception while parsing: " + e.Message);
}
if (parsed != null)
{
var message = new CdpApiMessage
{
ReceivedOn = nic.Name,
ReceivedAt = DateTimeOffset.Now,
SourceMac = remoteHost.ToString(),
Packet = parsed
};
var dataAsString = JsonConvert.SerializeObject(message, serializerSettings);
var content = new StringContent(dataAsString);
content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
Console.WriteLine("Preparing to send packet");
Console.WriteLine("Sending " + dataAsString);
var client = new HttpClient();
await client.PostAsync("http://192.168.70.1:51954/api/cdp", content);
Console.WriteLine("Data sent");
}
}
},
TaskCreationOptions.LongRunning
);
}
Console.WriteLine("Press any key to exit");
Console.ReadKey();
}
