public static void Main()
{
Location.App app = new Location.App();
app.InitializeComponent();
app.Run();
}
public static int Main(string[] args)
{
if (args != null && args.Length > 0) // if arguments supplied use console mode else use UI mode
{
int port = 43; // standard port 43
string protocol = "whois"; // Default protocol whois
string username = null;
string location = null;
String server = "whois.net.dcs.hull.ac.uk"; //Brians server
int timouttime = 1000;
for (int i = 0; i < args.Length; ++i) // finds which tags (-) are present then does the relevent task
{
switch (args[i])
{
case "-h":
server = args[++i]; //sets hostname
break;
case "-p":
port = int.Parse(args[++i]); //sets port
break;
case "-h9": //sets protocol to 0.9
case "-h0": //sets protocol to 1.0
case "-h1": protocol = args[i]; break; //sets protocol to HTTP 1.1
default: //if no protocol was set use whois
if (username == null)
{
username = args[i]; //set username to the firt arg
}
else if (location == null) // set location to second arg
{
location = args[i];
}
else
{
Console.WriteLine("Too many arguments"); // if there are too many args error
}
break;
}
if (args[i] == "-t")
{
timouttime = int.Parse(args[i + 1]);
}
}
if (username == null) // if there are too few args error
{
Console.WriteLine("Too few arguments");
}
try
{
TcpClient client = new TcpClient(); // connect to server
client.Connect(server, port);
StreamWriter sw = new StreamWriter(client.GetStream()); //set the streamreads and writers to what the server gets
StreamReader sr = new StreamReader(client.GetStream());
sw.AutoFlush = true; // Flushes the code automatically
List <string> Arglist = new List <string>(); // A list of arguments
client.SendTimeout = timouttime; // Timeout for the client
client.ReceiveTimeout = timouttime;
switch (protocol) // switches around the protocols decided by the first switch
{
case "whois": //default
if (location == null) // if a location is not supplied does a lookup
{
sw.WriteLine(username);
Console.WriteLine(username + " is " + sr.ReadToEnd()); //Prints the location of the user
}
else
{
sw.WriteLine(username + " " + location); //Writes to server the user and location
String reply = sr.ReadLine(); //gets reply
if (reply == "OK")
{
Console.WriteLine(username + " location changed to be " + location); // Changes location
}
else
{
Console.WriteLine("ERROR: Unexpected response " + reply); //Error
}
}
break;
case "-h9": //if -h9 is provided preforms 0.9 requests
if (location == null) // if location is not supplied do a lookup request
{
sw.WriteLine("GET /" + username); // requests location
string line1 = sr.ReadLine();
line1 = sr.ReadLine();
line1 = sr.ReadLine();
Console.WriteLine(username + " is " + sr.ReadLine()); // if found presents location recieved from server
}
else
{
sw.WriteLine("PUT /" + username + "\r\n" + location); //adds user
String reply = sr.ReadLine(); //gets reply
if (reply.EndsWith("OK"))
{
Console.WriteLine(username + " location changed to be " + location); //changes location
}
else
{
Console.WriteLine("ERROR: Unexpected response " + reply); //error
}
}
break;
case "-h1": //if HTTP 1.1 is checked
if (location == null) //if location is not supplied does a lookup request
{
sw.WriteLine("GET /?name=" + username + " HTTP/1.1" + "\r\n" + "Host: " + server + "\r\n" + "\r\n"); //requests infromation from server
string line2 = sr.ReadLine();
line2 = sr.ReadLine();
line2 = sr.ReadLine();
if (port == 80) //HTML website lookup
{
string s = "";
while (sr.Peek() >= 0) // reads in the lines
{
s = sr.ReadLine().ToString(); // adds args to list
Arglist.Add(s);
}
s = "";
int index = Arglist.IndexOf(""); // start at index where ""
for (int i = index + 1; i < Arglist.Count; i++)
{
s += Arglist[i]; // add the reqest to list
s += "\r\n"; // new line it
}
Console.WriteLine(username + " is " + s);
}
else
{
Console.WriteLine(username + " is " + sr.ReadLine());
}
}
else
{
int lengthtotal = username.Length + location.Length + 15; // find the total Content length
sw.WriteLine("POST / HTTP/1.1" + "\r\n" + "Host: " + server + "\r\n" + "Content-Length: " + lengthtotal + "\r\n" + "name=" + username + "&location=" + location + "\r\n"); // add user
String reply = sr.ReadLine();
if (reply.EndsWith("OK"))
{
Console.WriteLine(username + " location changed to be " + location); //change location
}
else
{
Console.WriteLine("ERROR: Unexpected response " + reply); //error
}
}
break;
case "-h0": // if HTTP 1.0 is checked
if (location == null) // if location is empty do a get request
{
sw.WriteLine("GET /?" + username + " HTTP/1.0" + "\r\n" + "\r\n"); //request the information
string line2 = sr.ReadLine();
line2 = sr.ReadLine();
line2 = sr.ReadLine();
Console.WriteLine(username + " is " + sr.ReadLine()); // print usernames location
}
else
{
sw.WriteLine("POST /" + username + " HTTP/1.0" + "\r\n" + "Content-Length: " + location.Length + "\r\n" + "\r\n" + location); // add user
String reply = sr.ReadLine();
if (reply.EndsWith("OK"))
{
Console.WriteLine(username + " location changed to be " + location); //change location
}
else
{
Console.WriteLine("ERROR: Unexpected response " + reply); //error
}
}
break;
}
}
catch (Exception e)
{
Console.WriteLine(e); // print exceptions
}
return(0);
}
else // Launch the UI
{
FreeConsole();
var app = new App();
return(app.Run());
}
}
