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Program.cs
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Program.cs
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// MIT License
//
// Copyright(c) 2017 Glueck & Kanja Consulting AG
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
using HexDump;
using Mono.Options;
using System;
using System.Diagnostics;
using System.IO;
using System.IO.Ports;
using System.Linq;
using System.Threading;
using Wireshark;
namespace DeConBee2Wireshark
{
class Program
{
static TextWriter TextOutput = Console.Error;
static bool Verbose = false;
static SerialPort ComPort;
static void Main(string[] args)
{
// parse command line options
string serialPortName = SerialPort.GetPortNames().FirstOrDefault();
string pipeName = "conbee";
byte zigBeeChannel = 15;
string wiresharkExe = "";
var options = new OptionSet();
options.Add(new OptionSet.Category("USAGE: DeConBee2Wireshark [options]"));
options.Add("p|port=", "Serial Port (e.g. 'COM3', default is first available serial port)", x => serialPortName = x);
options.Add("i|pipe=", String.Format(@"Pipe Name (defaults to '{0}' => '\\.\pipe\{0}')", pipeName), x => pipeName = x);
options.Add("c|channel=", String.Format("ZigBee Channel to Listen on (defaults to {0})", zigBeeChannel), (byte x) => zigBeeChannel = x);
options.Add("w|wireshark=", "Path to Wireshark.exe", x => wiresharkExe = x);
options.Add("v|verbose", "Show Verbose Output", x => Verbose = true);
options.Add("h|?|help", x => ShowHelpAndExit(options));
options.Add(new OptionSet.Category(""));
options.Add(new OptionSet.Category("IMPORTANT: You need a ConBee USB stick from dresden elektronik (www.dresden-elektronik.de) WITH BITCATCHER FIRMWARE for this tool to work!"));
try
{
var unprocessed = options.Parse(args);
if (unprocessed.Count > 0)
throw new ArgumentException(string.Format("Unrecognized command line arguments {0}.",
String.Join(" ", unprocessed.Select(x => String.Format("'{0}'", x)))
));
}
catch (Exception e)
{
ShowHelpAndExit(options, e.Message);
}
// connect to ConBee USB stick
try
{
if (string.IsNullOrWhiteSpace(serialPortName))
throw new ApplicationException("No serial port found or provided");
ComPort = new SerialPort(serialPortName, 38400, Parity.None, 8, StopBits.One);
ComPort.Open();
}
catch (Exception ex)
{
throw new ApplicationException("Error opening serial port", ex);
}
// open pipe and wait for wireshark to connect
TextOutput.WriteLine("DeConBee2Wireshark started (port '{0}', pipe '{1}', zigbee channel {2})", serialPortName, pipeName, zigBeeChannel);
TextOutput.WriteLine();
var wiresharkSender = new WiresharkSender(pipeName, 0xc3);
bool wiresharkIsChild = !string.IsNullOrWhiteSpace(wiresharkExe);
if (wiresharkIsChild)
{
try
{
Process.Start(wiresharkExe, String.Format(@"-i\\.\pipe\{0} -k", pipeName));
}
catch (Exception ex)
{
throw new ApplicationException("Error starting Wireshark", ex);
}
}
else
{
TextOutput.WriteLine(@"Now start Wireshark with command line arguments -i\\.\pipe\{0} -k", pipeName);
TextOutput.WriteLine();
}
TextOutput.Write(@"Waiting for Wireshark to connect to pipe \\.\pipe\{0}: ", pipeName);
while (!wiresharkSender.isConnected)
{
if (!wiresharkIsChild)
TextOutput.Write(".");
Thread.Sleep(500);
}
if (!wiresharkIsChild)
TextOutput.WriteLine();
TextOutput.WriteLine("Wireshark connected.");
TextOutput.WriteLine();
// discard any old frames
ComPort.DiscardOutBuffer();
ComPort.DiscardInBuffer();
// select channel
ConBeeSendFrame(new byte[] { 0x09, zigBeeChannel, 0x00 });
// start sniffing
try
{
ConBeeSendFrame(new byte[] { 0x0b });
ComPort.ReadTimeout = 1000;
var frameAck = ConBeeReadFrame();
if (frameAck[0] != 0x0c)
throw new InvalidDataException();
}
catch (Exception ex)
{
throw new ApplicationException(String.Format("None or invalid data received from COM port. Are you sure a dresden elektronik ConBee USB stick WITH BITCATCHER FIRMWARE is connected to port {0}?", serialPortName), ex);
}
// read frames and forward to wireshark
ComPort.ReadTimeout = SerialPort.InfiniteTimeout;
while (true)
{
var payload = ConBeeReadFrame();
if (payload[0] == 0x50 && payload.Length > 9)
{
var result = wiresharkSender.SendToWireshark(payload, 9, payload.Length - 9);
if (!result)
{
TextOutput.WriteLine();
TextOutput.WriteLine("Pipe broken, Wireshark might have exited - exiting as well.");
break;
}
}
}
}
public static void ShowHelpAndExit(OptionSet options, string errorMessage = null)
{
TextOutput.WriteLine();
if (!string.IsNullOrWhiteSpace(errorMessage))
TextOutput.WriteLine("ERROR: {0}\r\n", errorMessage);
options.WriteOptionDescriptions(TextOutput);
Environment.Exit(-666);
}
static void ConBeeSendFrame(byte[] payload)
{
var fullFrame = new byte[payload.Length + 3];
fullFrame[0] = 0x2a;
fullFrame[1] = (byte)(payload.Length + 1);
Buffer.BlockCopy(payload, 0, fullFrame, 2, payload.Length);
byte frameChecksum = 0xff;
for (var i = 1; i < fullFrame.Length - 1; i++)
frameChecksum -= fullFrame[i];
fullFrame[fullFrame.Length - 1] = frameChecksum;
if (Verbose)
{
TextOutput.WriteLine("Out:");
TextOutput.WriteLine(Utils.HexDump(fullFrame));
}
ComPort.Write(fullFrame, 0, fullFrame.Length);
}
static byte[] ConBeeReadFrame()
{
int frameDelimiter = -1;
while (frameDelimiter != 0x2a)
{
frameDelimiter = ComPort.ReadByte();
}
var frameLength = ComPort.ReadByte();
var fullFrame = new byte[frameLength + 2];
fullFrame[0] = (byte)frameDelimiter;
fullFrame[1] = (byte)frameLength;
int bytesRead = 0;
while (bytesRead < frameLength)
{
bytesRead += ComPort.Read(fullFrame, 2 + bytesRead, frameLength - bytesRead);
}
if (Verbose)
{
TextOutput.WriteLine("In:");
TextOutput.WriteLine(Utils.HexDump(fullFrame));
}
else
{
TextOutput.Write(".");
}
var payload = new byte[fullFrame[1] - 1];
Buffer.BlockCopy(fullFrame, 2, payload, 0, payload.Length);
return payload;
}
}
}