Exemple #1
0
        public void Print(IHeader header)
        {
            IPHeader newIPHeader = header as IPHeader;

            Console.WriteLine(string.Format("Protocol\tSource IP\tDestination IP\tTotal Length"));
            Console.WriteLine(string.Format("  {0}\t{1}\t{2}\t{3}", newIPHeader.Protocol,
                                            newIPHeader.SourceIP, newIPHeader.DestIP, newIPHeader.TotalLength));
        }
Exemple #2
0
        /// <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);
            }
        }
Exemple #3
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="res"></param>
        protected override void OnReceive(IAsyncResult res)
        {
            try
            {
                int nReceived = mainSocket.EndReceive(res);

                ipHeader = new IPHeader(byteData, nReceived);

                base.ParsePacket(ipHeader, globalFilter);

                if (ContinueCapturing)
                {
                    byteData = new byte[4096];

                    mainSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(OnReceive), null);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
Exemple #4
0
        /// <summary>
        /// Displays specified information
        /// </summary>
        /// <param name="header"></param>
        protected override void Print(params IHeader[] header)
        {
            if (header.Length > 0)
            {
                IPHeader ipPacket = header[0] as IPHeader;

                if (filter == FilterType.All)
                {
                    if (whatToFilter == SpecFilter.SourceIP)
                    {
                        if (ipPacket.SourceIP == key)
                        {
                            Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                            ipPacket.SourceIP, header[1].SourcePort,
                                                            ipPacket.DestIP, header[1].DestPort));
                        }
                    }
                    else if (whatToFilter == SpecFilter.DestIP)
                    {
                        if (ipPacket.DestIP == key)
                        {
                            Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                            ipPacket.SourceIP, header[1].SourcePort,
                                                            ipPacket.DestIP, header[1].DestPort));
                        }
                    }
                    else if (whatToFilter == SpecFilter.SourcePort)
                    {
                        if (header[1].SourcePort == key)
                        {
                            Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                            ipPacket.SourceIP, header[1].SourcePort,
                                                            ipPacket.DestIP, header[1].DestPort));
                        }
                    }
                    else if (whatToFilter == SpecFilter.DestPort)
                    {
                        if (header[1].DestPort == key)
                        {
                            Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                            ipPacket.SourceIP, header[1].SourcePort,
                                                            ipPacket.DestIP, header[1].DestPort));
                        }
                    }
                    else
                    {
                        Console.WriteLine("Unknown request");
                    }
                }
                else if (filter == FilterType.TCP)
                {
                    if (ipPacket.Protocol == ProtocolType.Tcp)
                    {
                        if (whatToFilter == SpecFilter.SourceIP)
                        {
                            if (ipPacket.SourceIP == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else if (whatToFilter == SpecFilter.DestIP)
                        {
                            if (ipPacket.DestIP == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else if (whatToFilter == SpecFilter.SourcePort)
                        {
                            if (header[1].SourcePort == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else if (whatToFilter == SpecFilter.DestPort)
                        {
                            if (header[1].DestPort == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else
                        {
                            Console.WriteLine("Unknown request");
                        }
                    }
                }
                else if (filter == FilterType.UDP)
                {
                    if (ipPacket.Protocol == ProtocolType.Udp)
                    {
                        if (whatToFilter == SpecFilter.SourceIP)
                        {
                            if (ipPacket.SourceIP == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else if (whatToFilter == SpecFilter.DestIP)
                        {
                            if (ipPacket.DestIP == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else if (whatToFilter == SpecFilter.SourcePort)
                        {
                            if (header[1].SourcePort == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else if (whatToFilter == SpecFilter.DestPort)
                        {
                            if (header[1].DestPort == key)
                            {
                                Console.WriteLine(string.Format("{0}\t{1} : {2}\t\t{3} : {4}", ipPacket.Protocol,
                                                                ipPacket.SourceIP, header[1].SourcePort,
                                                                ipPacket.DestIP, header[1].DestPort));
                            }
                        }
                        else
                        {
                            Console.WriteLine("Unknown request");
                        }
                    }
                }
                else
                {
                    Console.WriteLine("Unknown packet was received");
                }
            }
            else
            {
                Console.WriteLine("An error occured, nothing to display");
            }
        }