static void StartProxyService(UdpProxyOptions upo)
{
ProxyUDPSocketService proxy = null;
if (upo.output == null)
{
proxy = new ProxyUDPSocketService(upo.src_iep, upo.dest_iep);
}
else
{
try
{
//output_file = File.Open(output, FileMode.Create);
proxy = new ProxyUDPSocketService(upo.src_iep, upo.dest_iep, upo.output, upo.format, upo.modify);
}
catch (System.IO.IOException ioe)
{
Console.WriteLine("Error opening file {0} for writing: {1}", upo.output, ioe.Message);
return;
}
}
if (upo.dll != null)
{
Console.WriteLine("Attempting to load decryptor dll {0}", upo.dll);
int ret = proxy.SetDecryptor(upo.dll);
if (ret != 0)
{
Console.WriteLine("Error loading dll: {0}\n", ret);
return;
}
}
proxy.ConnectToServer();
proxy.StartListening();
}
static void Main(string[] args)
{
bool show_help = false;
UdpProxyOptions upo = new UdpProxyOptions();
var p = new OptionSet()
{
{ "d|dest=",
"destination (to fwd packets to) ip.ip.ip.ip:port.",
v => upo.dest = v },
{ "s|src=",
"source (to bind to) ip.ip.ip.ip:port",
v => upo.src = v },
{ "dll=",
"dll to be used to decrypt packets, must export decrypt() and init() functions.",
v => upo.dll = v },
{ "o|output=",
"where to write the output to.",
v => upo.output = v },
{ "m|modify",
"Allows decrypt() dll function to modify the data.",
v => upo.modify = v != null },
{ "f|format=",
"how to write the data: json|asciibin|dll",
v => upo.format = v },
{ "h|?|help", "show this message and exit",
v => show_help = v != null },
};
p.Parse(args);
if (show_help)
{
ShowHelp(p, null);
}
ValidateArguments(p, upo);
StartProxyService(upo);
}
static void ValidateArguments(OptionSet p, UdpProxyOptions upo)
{
if (upo.src == null || upo.dest == null)
{
ShowHelp(p, "Source *and* destionation are both required.");
}
Console.WriteLine(upo.src);
if (upo.output != null && !(upo.format.Equals("json") || upo.format.Equals("asciibin") || upo.format.Equals("dll")))
{
ShowHelp(p, string.Format("Output format is incorrect. {0}...", upo.format));
}
upo.src_iep = ParseAddressToEndpoint(upo.src);
if (upo.src_iep == null)
{
ShowHelp(p, "Error invalid source specified.");
}
upo.dest_iep = ParseAddressToEndpoint(upo.dest);
if (upo.dest_iep == null)
{
ShowHelp(p, "Error invalid destination specified.");
}
}
