/// <summary>
/// Prints basic header fields
/// </summary>
/// <param name="header"></param>
public void Print(IHeader header)
{
TCPHeader newHeader = header as TCPHeader;
Console.WriteLine(string.Format("Window Size\tSource Port\tDestination Port\tUrgent Pointer"));
Console.WriteLine(string.Format(" {0}\t{1}\t{2}\t{3}",
newHeader.WindowSize, newHeader.SourcePort, newHeader.DestPort, newHeader.UrgentPointer));
}
/// <summary>
///
/// </summary>
/// <param name="header"></param>
protected override void Print(params IHeader[] header)
{
if (globalFilter == FilterType.All)
{
var ipHeader = header[0] as IPHeader;
TCPHeader tcpHeader;
UDPHeader udpHeader;
if (header[1] is TCPHeader)
{
tcpHeader = header[1] as TCPHeader;
Console.WriteLine(string.Format("{0}\t{1}:{2}\t\t{3}:{4}",
ipHeader.Protocol,
ipHeader.SourceIP, tcpHeader.SourcePort,
ipHeader.DestIP, tcpHeader.DestPort));
}
else if (header[1] is UDPHeader)
{
udpHeader = header[1] as UDPHeader;
Console.WriteLine(string.Format("{0}\t{1}:{2}\t\t{3}:{4}",
ipHeader.Protocol,
ipHeader.SourceIP, udpHeader.SourcePort,
ipHeader.DestIP, udpHeader.DestPort));
}
}
else if (globalFilter == FilterType.TCP)
{
var ipHeader = header[0] as IPHeader;
if (ipHeader.Protocol == ProtocolType.Tcp)
{
TCPHeader tcpHeader = header[1] as TCPHeader;
Console.WriteLine(string.Format("{0}\t{1}:{2}\t\t{3}:{4}",
ipHeader.Protocol,
ipHeader.SourceIP, tcpHeader.SourcePort,
ipHeader.DestIP, tcpHeader.DestPort));
}
}
else if (globalFilter == FilterType.UDP)
{
var ipHeader = header[0] as IPHeader;
if (ipHeader.Protocol == ProtocolType.Udp)
{
UDPHeader udpHeader = header[1] as UDPHeader;
Console.WriteLine(string.Format("{0}\t{1}:{2}\t\t{3}:{4}",
ipHeader.Protocol,
ipHeader.SourceIP, udpHeader.SourcePort,
ipHeader.DestIP, udpHeader.DestPort));
}
}
}
/// <summary>
/// Parses packets
/// </summary>
/// <param name="protocol"></param>
/// <param name="flag"></param>
protected virtual void ParsePacket(IPHeader protocol, FilterType filter)
{
try
{
IHeader header;
switch (filter)
{
case FilterType.All:
if (protocol.Protocol == ProtocolType.Tcp)
{
header = new TCPHeader(protocol.Data, Convert.ToInt32(protocol.MessageLength));
}
else
{
header = new UDPHeader(protocol.Data, Convert.ToInt32(protocol.MessageLength));
}
Print(protocol, header);
break;
case FilterType.TCP:
if (protocol.Protocol == ProtocolType.Tcp)
{
header = new TCPHeader(protocol.Data, Convert.ToInt32(protocol.MessageLength));
Print(protocol, header);
}
break;
case FilterType.UDP:
if (protocol.Protocol == ProtocolType.Udp)
{
header = new UDPHeader(protocol.Data, Convert.ToInt32(protocol.MessageLength));
Print(protocol, header);
}
break;
}
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex.StackTrace + " | " + ex.Message);
}
}