public static bool TryParse(string request, out HTTPReqArgs e)
{
bool result = false;
e = new HTTPReqArgs();
if (request != null)
{
string[] args = request.Split(' ');
if (args.Length >= 2)
{
if (Enum.TryParse(args[0], out HTTPRequestType type))
{
string host = GetHost(request);
int port = GetPort(request);
if (!string.IsNullOrEmpty(host) && port != 0)
{
e.HTTP_Request_Type = type;
e.Host = host;
e.Port = port;
result = true;
}
}
}
}
return(result);
}
public static Tunnel Handle(
string firstMsg, System.Net.Sockets.Socket socket2Client)
{
Tunnel result = null;
if (firstMsg != null && socket2Client != null)
{
if (HTTPReqArgs.TryParse(firstMsg, out HTTPReqArgs e0))
{
IPEndPoint reqEP = HTTPReqArgs.GetIPEndPoint(e0);
EagleTunnelArgs e1 = new EagleTunnelArgs();
e1.EndPoint = reqEP;
Tunnel tunnel = EagleTunnelSender.Handle(
EagleTunnelHandler.EagleTunnelRequestType.TCP, e1);
if (tunnel != null)
{
tunnel.SocketL = socket2Client;
bool done;
if (e0.HTTP_Request_Type == HTTPRequestType.CONNECT)
{
// HTTPS: reply web client;
string re443 = "HTTP/1.1 200 Connection Established\r\n\r\n";
done = tunnel.WriteL(re443);
}
else
{
// HTTP: relay new request to web server
string newReq = HTTPReqArgs.CreateNewRequest(firstMsg);
done = tunnel.WriteR(newReq);
}
if (done)
{
result = tunnel;
}
else
{
tunnel.Close();
}
}
}
}
return(result);
}
// public static string CreateNewRequest (string oldRequest) {
// string newReq = "";
// string[] lines = oldRequest.Replace ("\r\n", "\n").Split ('\n');
// string[] args = lines[0].Split (' ');
// if (args.Length >= 2) {
// string des = args[1];
// Uri uri = new Uri (des);
// if (uri.HostNameType != UriHostNameType.Unknown) {
// string line = args[0];
// line += ' ' + uri.AbsolutePath;
// newReq = line;
// if (args.Length >= 3) {
// newReq += ' ' + args[2];
// for (int i = 1; i < lines.Length; ++i) {
// line = lines[i];
// newReq += "\r\n" + line;
// }
// }
// }
// }
// return newReq;
// }
public static IPEndPoint GetIPEndPoint(HTTPReqArgs e0)
{
IPEndPoint result = null;
if (e0 != null)
{
if (e0.Host != null & e0.Port != 0)
{
// resolv ip of domain name by EagleTunnel Sender
EagleTunnelArgs e1 = new EagleTunnelArgs();
e1.Domain = e0.Host;
EagleTunnelSender.Handle(
EagleTunnelHandler.EagleTunnelRequestType.DNS, e1);
if (e1.IP != null)
{
// resolv successfully
result = new IPEndPoint(e1.IP, e0.Port);
}
}
}
return(result);
}
public static bool Handle(string firstMsg, Tunnel tunnel)
{
bool result = false;
if (firstMsg != null && tunnel != null)
{
if (HTTPReqArgs.TryParse(firstMsg, out HTTPReqArgs e0))
{
IPEndPoint reqEP = HTTPReqArgs.GetIPEndPoint(e0);
EagleTunnelArgs e1 = new EagleTunnelArgs();
e1.EndPoint = reqEP;
e1.tunnel = tunnel;
if (EagleTunnelSender.Handle(
EagleTunnelHandler.EagleTunnelRequestType.TCP, e1))
{
if (Conf.LocalUser != null)
{
Conf.LocalUser.AddTunnel(tunnel);
}
if (e0.HTTP_Request_Type == HTTPRequestType.CONNECT)
{
// HTTPS: reply web client;
string re443 = "HTTP/1.1 200 Connection Established\r\n\r\n";
result = tunnel.WriteL(re443);
}
else
{
// HTTP: relay new request to web server
string newReq = HTTPReqArgs.CreateNewRequest(firstMsg);
result = tunnel.WriteR(newReq);
}
}
}
}
return(result);
}
