public Connection(Tamir.IPLib.Packets.TCPPacket packet)
{
m_srcIp = packet.SourceAddress;
m_dstIp = packet.DestinationAddress;
m_srcPort = (ushort)packet.SourcePort;
m_dstPort = (ushort)packet.DestinationPort;
}
private static void device_PcapOnPacketArrival(object sender, Tamir.IPLib.Packets.Packet packet)
{
if(packet is EthernetPacket)
{
EthernetPacket eth = ((EthernetPacket)packet);
Console.WriteLine("Original packet: "+eth.ToColoredString(false));
//Manipulate ethernet parameters
eth.SourceHwAddress = "00:11:22:33:44:55";
eth.DestinationHwAddress = "00:99:88:77:66:55";
if (packet is IPPacket)
{
IPPacket ip = ((IPPacket)packet);
//manipulate IP parameters
ip.SourceAddress = "1.2.3.4";
ip.DestinationAddress = "44.33.22.11";
ip.TimeToLive = 11;
//Recalculate the IP checksum
ip.ComputeIPChecksum();
if (ip is TCPPacket)
{
TCPPacket tcp = ((TCPPacket)ip);
//manipulate TCP parameters
tcp.SourcePort = 9999;
tcp.DestinationPort = 8888;
tcp.Syn = !tcp.Syn;
tcp.Fin = !tcp.Fin;
tcp.Ack = !tcp.Ack;
tcp.WindowSize = 500;
tcp.AcknowledgementNumber = 800;
tcp.SequenceNumber = 800;
//Recalculate the TCP checksum
tcp.ComputeTCPChecksum();
}
if (ip is UDPPacket)
{
UDPPacket udp = ((UDPPacket)ip);
//manipulate UDP parameters
udp.SourcePort = 9999;
udp.DestinationPort = 8888;
//Recalculate the UDP checksum
udp.ComputeUDPChecksum();
}
}
Console.WriteLine("Manipulated packet: "+eth.ToColoredString(false));
}
}
/// <summary>
/// The main function of the class receives a tcp packet and reconstructs the stream
/// </summary>
/// <param name="tcpPacket"></param>
public void ReassemblePacket(Tamir.IPLib.Packets.TCPPacket tcpPacket)
{
// if the paylod length is zero bail out
ulong length = (ulong)(tcpPacket.TCPPacketByteLength - tcpPacket.TCPHeaderLength);
if (length == 0) return;
reassemble_tcp((ulong)tcpPacket.SequenceNumber, length,
tcpPacket.TCPData, (ulong)tcpPacket.TCPData.Length, tcpPacket.Syn,
tcpPacket.SourceAddressAsLong,tcpPacket.DestinationAddressAsLong,
(uint)tcpPacket.SourcePort, (uint)tcpPacket.DestinationPort);
}
void dev_PcapOnPacketArrival(object sender, Tamir.IPLib.Packets.Packet packet)
{
lock(packets) {
packets.Add(packet);
newpackets.Add(packet);
}
if(dev.PcapDumpOpened) {
dev.PcapDump(packet);
}
this.Invoke(updater);
}
/// <summary>
/// Helper function that extracts error messages from SharpSSH style exceptions and converts them into regular .Net exception messages
/// </summary>
/// <param name="sx">The exception to convert</param>
/// <returns>The converted exception</returns>
private static Exception ReshapeSharpSSHException(Tamir.SharpSsh.jsch.SftpException sx)
{
string idstr;
if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_OK)
idstr = "OK";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_EOF)
idstr = "EOF";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_NO_SUCH_FILE)
idstr = "NO_SUCH_FILE";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_PERMISSION_DENIED)
idstr = "PERMISSION_DENIED";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_FAILURE)
idstr = "FAILURE";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_BAD_MESSAGE)
idstr = "BAD_MESSAGE";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_NO_CONNECTION)
idstr = "NO_CONNECTION";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_CONNECTION_LOST)
idstr = "CONNECTION_LOST";
else if (sx.id == Tamir.SharpSsh.jsch.ChannelSftp.SSH_FX_OP_UNSUPPORTED)
idstr = "UNSUPPORTED";
else
idstr = "UNKNOWN";
return new Exception(string.Format("{0} - {1}: {2}", sx.id, idstr, sx.message), sx);
}
public StringBuffer append(Tamir.SharpSsh.java.String s)
{
return append(s.ToString());
}
public StringBuffer(Tamir.SharpSsh.java.String s):this(s.ToString())
{
}
private void device_PcapOnPacketArrival(object sender, Tamir.IPLib.Packets.Packet packet)
{
Console.WriteLine(packet);
}
/// <summary>
/// The main function of the class receives a tcp packet and reconstructs the stream
/// </summary>
/// <param name="tcpPacket"></param>
public void ReassemblePacket(Tamir.IPLib.Packets.TCPPacket tcpPacket)
{
// if the paylod length is zero bail out
ulong length = (ulong)(tcpPacket.TCPPacketByteLength - tcpPacket.TCPHeaderLength);
if (length == 0) return;
// Raise Events
if (tcpPacket.Syn && tcpPacket.Ack)
this.OnSynRecived(this);
else if (tcpPacket.Fin && tcpPacket.Ack)
this.OnFinRecived(this);
else if (tcpPacket.Rst)
this.OnRstRecived(this);
reassemble_tcp((ulong)tcpPacket.SequenceNumber, length,
tcpPacket.TCPData, (ulong)tcpPacket.TCPData.Length, tcpPacket.Syn,
tcpPacket.SourceAddressAsLong, tcpPacket.DestinationAddressAsLong,
(uint)tcpPacket.SourcePort, (uint)tcpPacket.DestinationPort);
}
public void PutWithStream(Tamir.SharpSsh.java.io.InputStream stream, string toDirPath)
{
cancelled = false;
SftpChannel.put(stream, toDirPath, m_monitor) ;
}
public void GetWithStream(string fromFilePath, Tamir.SharpSsh.java.io.OutputStream stream)
{
cancelled = false;
SftpChannel.get(fromFilePath, stream, m_monitor);
}
public static int GenerateHashCode(Tamir.IPLib.Packets.TCPPacket packet)
{
return ((packet.SourceAddress.GetHashCode() ^ packet.SourcePort.GetHashCode()) as object).GetHashCode() ^
((packet.DestinationAddress.GetHashCode() ^ packet.DestinationPort.GetHashCode()) as object).GetHashCode();
}
