private void ParseData(byte[] byteData, int nReceived)
{
IPHeader ipHeader = new IPHeader(byteData, nReceived);
switch (ipHeader.ProtocolType)
{
/*case Protocol.TCP: {
* TCPHeader tcpHeader = new TCPHeader(ipHeader.Data, ipHeader.MessageLength);
* if (tcpHeader.Flags.Equals("0x18 (PSH, ACK)")) {
* byte[] data = new byte[(int)ipHeader.MessageLength];
* for (int i = 0; i < data.Length; i++) data[i] = tcpHeader.Data[i];
* string content = Encoding.ASCII.GetString(data);
* if (content.StartsWith("GET ")) parseData(ipHeader, tcpHeader, content, true);
* else if (content.StartsWith("HTTP/1.1 ")) parseData(ipHeader, tcpHeader, content, false);
* }
* break;
* }*/
case Protocol.UDP: {
UDPHeader udpHeader = new UDPHeader(ipHeader.Data, ipHeader.MessageLength);
int destinationPort = Int32.Parse(udpHeader.DestinationPort);
int sourcePort = Int32.Parse(udpHeader.SourcePort);
if (destinationPort == 53 || sourcePort == 53)
{
byte[] fillBuffer = new byte[ipHeader.MessageLength];
string result = string.Empty;
for (int i = 0, c = 0; i < fillBuffer.Length; i++)
{
int byteInt = ipHeader.Data[i];
if (byteInt < 32)
{
if (c > 3 && result.Length > 0)
{
result += ".";
}
else
{
c++;
}
}
else if (byteInt > 32 && byteInt < 127)
{
result += (char)byteInt;
}
}
char[] charArray = result.ToCharArray();
char oldChar = '.';
for (int i = 0; i < charArray.Length; i++)
{
if (i > 3 && charArray[i] != oldChar && charArray[i - 1] == oldChar && charArray[i - 2] == oldChar)
{
result = string.Empty;
for (int j = i; j < charArray.Length; j++)
{
result += charArray[j];
}
break;
}
oldChar = charArray[i];
}
result = result.Replace(".....", "");
Console.WriteLine("DNS: " + result);
}
break;
}
default: {
break;
}
}
}
private void ParseData(byte[] byteData, int nReceived)
{
IPHeader ipHeader = new IPHeader(byteData, nReceived);
switch (ipHeader.ProtocolType) {
/*case Protocol.TCP: {
TCPHeader tcpHeader = new TCPHeader(ipHeader.Data, ipHeader.MessageLength);
if (tcpHeader.Flags.Equals("0x18 (PSH, ACK)")) {
byte[] data = new byte[(int)ipHeader.MessageLength];
for (int i = 0; i < data.Length; i++) data[i] = tcpHeader.Data[i];
string content = Encoding.ASCII.GetString(data);
if (content.StartsWith("GET ")) parseData(ipHeader, tcpHeader, content, true);
else if (content.StartsWith("HTTP/1.1 ")) parseData(ipHeader, tcpHeader, content, false);
}
break;
}*/
case Protocol.UDP: {
UDPHeader udpHeader = new UDPHeader(ipHeader.Data, ipHeader.MessageLength);
int destinationPort = Int32.Parse(udpHeader.DestinationPort);
int sourcePort = Int32.Parse(udpHeader.SourcePort);
if (destinationPort == 53 || sourcePort == 53) {
byte[] fillBuffer = new byte[ipHeader.MessageLength];
string result = string.Empty;
for (int i = 0, c=0; i < fillBuffer.Length; i++) {
int byteInt = ipHeader.Data[i];
if (byteInt < 32) {
if (c > 3 && result.Length > 0) result += ".";
else c++;
}
else if (byteInt > 32 && byteInt < 127) result += (char)byteInt;
}
char[] charArray = result.ToCharArray();
char oldChar = '.';
for (int i = 0; i < charArray.Length; i++) {
if (i > 3 && charArray[i] != oldChar && charArray[i-1] == oldChar && charArray[i-2] == oldChar) {
result = string.Empty;
for (int j = i; j < charArray.Length; j++) result += charArray[j];
break;
}
oldChar = charArray[i];
}
result = result.Replace(".....", "");
Console.WriteLine("DNS: " + result);
}
break;
}
default: {
break;
}
}
}