86 lines
3.4 KiB
C#
86 lines
3.4 KiB
C#
|
using System;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
using System.Text;
|
||
|
|
|
||
|
|
namespace ProjectCarbon.Protocols
|
||
|
|
{
|
||
|
|
[Serializable]
|
||
|
|
public class IpProtocol
|
||
|
|
{
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Provides a list of properties for this protocol.
|
||
|
|
/// </summary>
|
||
|
|
private Dictionary<string, object> m_protocolProperties =
|
||
|
|
new Dictionary<string, object>();
|
||
|
|
|
||
|
|
public IpProtocol(byte[] packetBuffer)
|
||
|
|
{
|
||
|
|
BigEndianConverter endianConverter = new BigEndianConverter();
|
||
|
|
|
||
|
|
if (packetBuffer == null)
|
||
|
|
throw new ArgumentException("Incoming Packet is null.");
|
||
|
|
|
||
|
|
if (packetBuffer.Length < 20)
|
||
|
|
throw new ArgumentException("Incomplete IP Header");
|
||
|
|
|
||
|
|
int version = (packetBuffer[0] & 0xF0) >> 4;
|
||
|
|
int headerLength = (packetBuffer[0] & 0x0F) * 4;
|
||
|
|
|
||
|
|
if ((packetBuffer[0] & 0x0F) < 5)
|
||
|
|
throw new ArgumentException("Smaller then 5");
|
||
|
|
|
||
|
|
Precedence precedence = (Precedence)((packetBuffer[1] & 0xE0) >> 5);
|
||
|
|
Delay delay = (Delay)((packetBuffer[1] & 0x10) >> 4);
|
||
|
|
Throughput throughput = (Throughput)((packetBuffer[1] & 0x08) >> 3);
|
||
|
|
Reliability reliability = (Reliability)((packetBuffer[1] & 0x04) >> 2);
|
||
|
|
|
||
|
|
int totalLength = (packetBuffer[2] * 256) + packetBuffer[3];
|
||
|
|
int identification = (packetBuffer[4] * 256) + packetBuffer[5];
|
||
|
|
int timeToLive = packetBuffer[8];
|
||
|
|
|
||
|
|
Protocol protocol = (Protocol)packetBuffer[9];
|
||
|
|
|
||
|
|
ushort checksum = endianConverter.ToUInt16(packetBuffer, 10);
|
||
|
|
|
||
|
|
string sourceAddress = String.Format("{0}.{1}.{2}.{3}",
|
||
|
|
packetBuffer[12], packetBuffer[13], packetBuffer[14], packetBuffer[15]);
|
||
|
|
string destinationAddress = String.Format("{0}.{1}.{2}.{3}",
|
||
|
|
packetBuffer[16], packetBuffer[17], packetBuffer[18], packetBuffer[19]);
|
||
|
|
|
||
|
|
byte[] payload = new byte[packetBuffer.Length - headerLength];
|
||
|
|
|
||
|
|
Array.Copy(packetBuffer, headerLength, payload, 0, payload.Length);
|
||
|
|
|
||
|
|
DateTime packetTime = System.DateTime.Now;
|
||
|
|
|
||
|
|
// add all these to the properties
|
||
|
|
m_protocolProperties.Add("Version", version);
|
||
|
|
m_protocolProperties.Add("HeaderLength", headerLength);
|
||
|
|
m_protocolProperties.Add("Precedence", precedence);
|
||
|
|
m_protocolProperties.Add("Delay", delay);
|
||
|
|
m_protocolProperties.Add("Throughput", throughput);
|
||
|
|
m_protocolProperties.Add("Reliability", reliability);
|
||
|
|
m_protocolProperties.Add("TotalLength", totalLength);
|
||
|
|
m_protocolProperties.Add("Identification", identification);
|
||
|
|
m_protocolProperties.Add("TimeToLive", timeToLive);
|
||
|
|
m_protocolProperties.Add("Protocol", protocol);
|
||
|
|
m_protocolProperties.Add("Checksum", checksum);
|
||
|
|
m_protocolProperties.Add("SourceAddress", sourceAddress);
|
||
|
|
m_protocolProperties.Add("DestinationAddress", destinationAddress);
|
||
|
|
m_protocolProperties.Add("Payload", payload);
|
||
|
|
|
||
|
|
m_protocolProperties.Add("PacketTime", packetTime);
|
||
|
|
m_protocolProperties.Add("PacketPayload", packetBuffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Allows you to access the properties of this protocol
|
||
|
|
/// </summary>
|
||
|
|
public Dictionary<string, object> Properties
|
||
|
|
{
|
||
|
|
get { return m_protocolProperties; }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|