void Print(byte[] buf, int len)
{
try
{
csSniffer.DataStructures.IPHeader ipHeader = new csSniffer.DataStructures.IPHeader(buf, len);
bool UDP = checkBox3.Checked;
bool TCP = checkBox3.Checked;
if ((ipHeader.ProtocolType == Protocol.UDP && UDP == true) || (ipHeader.ProtocolType == Protocol.TCP && TCP == true) || (ipHeader.ProtocolType == Protocol.ICMP))
{
string temp = string.Empty;
for (int i = 0; i < len; i++)
{
temp += buf[i].ToString("X2") + " ";
if ((i + 1) % 16 == 0 && i != 0)
{
//string txt = Encoding.ASCII.GetString(buf, i, 16);
temp += "\r\n";
}
else
{
}
}
richTextBox1.BeginInvoke(new Action(() => richTextBox1.AppendText("\r\n\r\n\r\n" + "[---------------------------Raw data---------------------------]\r\n" + temp + "\r\n" + Parse(buf, len) + " \r\n")));
SmWr.WriteLine("\r\n\r\n\r\n" + "[---------------------------Raw data---------------------------]\r\n" + temp + "\r\n" + Parse(buf, len) + " \r\n");
SmWr.Flush();
}
}
catch (Exception ex)
{
//CatchFunction(ex);
}
}
public string Parse(byte[] buf, int len)
{
try
{
csSniffer.DataStructures.IPHeader ipHeader = new csSniffer.DataStructures.IPHeader(buf, len);
string IpHeader = "\r\n[---------------------------New packet---------------------------]\r\n" +
"--IP header: " +
"-Version: " + ipHeader.Version +
"\r\n-IP Header length: " + ipHeader.HeaderLength +
"\r\n-TOS: " + ipHeader.DifferentiatedServices +
"\r\n-Total length: " + ipHeader.TotalLength +
"\r\n-Identification: " + ipHeader.Identification +
"\r\n-Flags: " + ipHeader.Flags +
"\r\n-Fragmentation: " + ipHeader.FragmentationOffset +
"\r\n-TTL: " + ipHeader.TTL +
"\r\n-Protocol: " + ipHeader.ProtocolType +
"\r\n-Header checksum: " + ipHeader.Checksum +
"\r\n-Source address: " + ipHeader.SourceAddress +
"\r\n-Destination address: " + ipHeader.DestinationAddress;
if (ipHeader.ProtocolType == Protocol.TCP)
{
csSniffer.DataStructures.TCPHeader tcpHeader = new csSniffer.DataStructures.TCPHeader(ipHeader.Data, len - Convert.ToInt32(ipHeader.HeaderLength));
IpHeader += "\r\n\r\n--TCP header: " +
"\r\n-Source port: " + tcpHeader.usSourcePort +
"\r\n-Destination port: " + tcpHeader.usDestinationPort +
"\r\n-Sequence number: " + tcpHeader.uiSequenceNumber +
"\r\n-Acknowledge number: " + tcpHeader.uiAcknowledgeNumber +
"\r\n-Offset & space & flag: " + tcpHeader.usOffsetSpaceFlag +
"\r\n-Window: " + tcpHeader.usWindow +
"\r\n-Checksum: " + tcpHeader.usChecksum.ToString("X2").ToLower() +
"\r\n-Urgent pointer: " + tcpHeader.usUrgentPointer;
}
if (ipHeader.ProtocolType == Protocol.UDP)
{
csSniffer.DataStructures.UDPHeader udpHeader = new csSniffer.DataStructures.UDPHeader(ipHeader.Data, len - Convert.ToInt32(ipHeader.HeaderLength));
IpHeader += "\r\n\r\n--UDP header: " +
"\r\n-Source port: " + udpHeader.usSourcePort +
"\r\n-Destination port: " + udpHeader.usDestinationPort +
"\r\n-Datagram length: " + udpHeader.usLength +
"\r\n-Checksum: " + udpHeader.usCheckSum.ToString("X2").ToLower();
}
if (ipHeader.ProtocolType == Protocol.ICMP)
{
csSniffer.DataStructures.ICMPHeader udpHeader = new csSniffer.DataStructures.ICMPHeader(ipHeader.Data, len - Convert.ToInt32(ipHeader.HeaderLength));
IpHeader += "\r\n\r\n--ICMP header: " +
"\r\n-Type: " + udpHeader.Type +
"\r\n-Status: " + udpHeader.Serial +
"\r\n-Checksum: " + udpHeader.usCheckSum.ToString("X2").ToLower();
}
return(IpHeader);
}
catch (Exception ex)
{
//CatchFunction(ex);
return("");
}
}