private void BtnLookUp_Click(object sender, EventArgs e)
{
Hide();
Form form = new Locationform();
form.Show();
}
private void BtnUpdate_Click(object sender, EventArgs e)
{
UpdateButton = true;
Hide();
Form form = new Locationform();
form.Show();
}
public static void Main(string[] args)
{
clientInfo.Clear();
try
{
// The purpose of creating this list of strings is to store the arguments from the user
// This is to check if the argument is less than one.
// If no argument is passed, the webform application is opened
if (args.Length <= 0)
{
List <string> clientInfo = new List <string>();
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Locationform info = new Locationform();
Application.Run(new lacationform2());
Servername = info.m_servername;
timeout = int.Parse(info.m_timeout);
PortNumber = int.Parse(info.m_portnumber);
Protocol = info.m_protocol;
response = info.m_response;
//clientInfo.Add(info.m_username);
//clientInfo.Add(info.m_location);
}
else
{
Servername = "whois.net.dcs.hull.ac.uk";
Protocol = "Whois";
PortNumber = 43;
for (int i = 0; i < args.Length; i++)
{
if (debugging)
{
Console.WriteLine(args[i]);
}
switch (args[i])
{
case "-t":
i++;
timeout = int.Parse(args[i]);
break;
case "-h":
i++;
Servername = args[i];
break;
case "-p":
i++;
PortNumber = Int32.Parse(args[i]);
break;
case "Whois":
Protocol = args[i];
break;
case "-h0":
Protocol = args[i];
break;
case "-h1":
Protocol = args[i];
break;
case "-h9":
Protocol = args[i];
break;
case "-d":
debugging = true;
break;
default:
clientInfo.Add(args[i]);
break;
}
}
}
// This debugging enables the user to know where in the program that is executing without him looking at the code.
if (debugging)
{
Console.WriteLine($"Servername: {Servername}");
}
// After going through all the arguments, then you can connect
// By creating a tcp client and and calling the .connect method
TcpClient client = new TcpClient();
client.Connect(Servername, PortNumber);
// Timeout is set by default to 1000.
//This sends and receives timeout from the server
client.SendTimeout = timeout;
client.ReceiveTimeout = timeout;
// this checks if the timeout was successfully received and sent and print to the user.
//if (debugging == true) Console.WriteLine($"Servername: {timeout}");
// Using the stream writer to write to the server and a stream reader to read the reply from the server
if (debugging)
{
Console.WriteLine(timeout);
}
// Using the stream writer to write to the server and a stream reader to read the reply from the server
StreamWriter sw = new StreamWriter(client.GetStream());
StreamReader sr = new StreamReader(client.GetStream());
// this checks if the list has any values in it.
// if there is not value, then write to the console argurment should be more than one.
// If in the second index in the list which is suppose to be the location is empty,
// swtich protocol
/*
* this checks if the list has any values in it.
* if there is not value, then write to the console argurment should be more than one.
*
* If in the second index in the list which is suppose to be the location is empty,
* swtich protocol
*
* Some of the lines depending on the protocol that was selected is split and the username
* is gotten from the line and check if it's in the dictionary.
*
*
* This website provided information in spliting lines into new lines and removes empty spaces
* https://stackoverflow.com/questions/1547476/easiest-way-to-split-a-string-on-newlines-in-net
*
* Also from line 263 checks if the portnumber is 80 and testing against a web server.
*
*
*/
if (clientInfo.Count == 1)
{
switch (Protocol)
{
case "Whois":
sw.WriteLine(clientInfo[0]);
sw.Flush();
string reply_fromserver = sr.ReadToEnd();
if (!reply_fromserver.Equals("ERROR: no entries found"))
{
Console.WriteLine(clientInfo[0] + " is " + reply_fromserver);
response = clientInfo[0] + " is " + reply_fromserver;
if (debugging)
{
Console.WriteLine(clientInfo[0] + " is " + reply_fromserver);
}
debuggingresponse = clientInfo[0] + " is " + reply_fromserver;
}
else
{
Console.WriteLine("ERROR: no entries found");
response = "ERROR: no entries found";
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "ERROR: no entries found";
}
break;
case "-h9":
sw.WriteLine("GET /" + clientInfo[0]);
sw.Flush();
string ik = sr.ReadToEnd();
string[] j = ik.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
if (((j[0].StartsWith("HTTP/0.9 200 OK")) && j[1].StartsWith("Content-Type: text/plain")))
{
Console.WriteLine(clientInfo[0] + " is " + j[2]);
response = clientInfo[0] + " is " + j[2];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " is " + j[2];
}
else
{
Console.WriteLine("HTTP / 0.9 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n");
response = "HTTP / 0.9 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n";
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "HTTP / 0.9 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n";
}
// Console.WriteLine(clientInfo[0] + " is " + j[2]);
sw.Flush();
break;
case "-h1":
if (PortNumber != 80)
{
sw.WriteLine("GET /?name=" + clientInfo[0] + " " + "HTTP/1.1");
sw.WriteLine("Host:" + " " + Servername + "\r\n");
sw.Flush();
string Read_alllines = sr.ReadToEnd();
string[] Get_IndividualLines = Read_alllines.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
if ((((Get_IndividualLines[0].StartsWith("HTTP/1.1 200 OK")) && Get_IndividualLines[1].StartsWith("Content-Type: text/plain") && PortNumber != 80)))
{
Console.WriteLine(clientInfo[0] + " is " + Get_IndividualLines[2]);
response = clientInfo[0] + " is " + Get_IndividualLines[2];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " is " + Get_IndividualLines[2];
return;
}
else
{
Console.WriteLine("HTTP / 1.0 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n");
response = "HTTP / 1.0 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n";
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "HTTP / 1.0 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n";
}
}
else if (PortNumber == 80) //This if statment handles the html responce
{
sw.WriteLine("GET /?name=" + clientInfo[0] + " " + "HTTP/1.1");
sw.WriteLine("Host:" + " " + Servername + "\r\n");
sw.Flush();
string Readhtml_line = sr.ReadLine();
while ((Readhtml_line != "") == true)
{
Readhtml_line = sr.ReadLine().Trim();
}
Console.Write(clientInfo[0] + " is " + Readhtml_line);
response = clientInfo[0] + " is " + Readhtml_line;
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " is " + Readhtml_line;
try
{
int c;
while ((c = sr.Read()) > 0)
{
Console.Write((char)c);
}
}
catch
{
//
}
}
break;
case "-h0":
sw.WriteLine("GET /?" + clientInfo[0] + " " + "HTTP/1.0" + "\r\n");
sw.Flush();
string k = sr.ReadToEnd();
string[] l = k.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
if (((l[0].StartsWith("HTTP/1.0 200 OK")) && l[1].StartsWith("Content-Type: text/plain")))
{
Console.WriteLine(clientInfo[0] + " is " + l[2]);
response = clientInfo[0] + " is " + l[2];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " is " + l[2];
}
else
{
Console.WriteLine("HTTP / 1.0 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n");
response = "HTTP / 1.0 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n";
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "HTTP / 1.0 404 Not Found\r\n" + "Content - Type: text / plain\r\n\r\n";
}
break;
}
return;
}
/*
* This part check if the user wants to update a clients location
* Depending on the protocol selected, the lines are split to match the ASW specification
* and the username and location is split and pulled from the lines and reply is sent back to the user
* from the server.
*
* The debugging features is also here to help see if a part is successful
*
*/
else if (clientInfo.Count == 2)
{
switch (Protocol)
{
case "Whois":
sw.WriteLine(clientInfo[0] + " " + clientInfo[1]);
sw.Flush();
reply = sr.ReadLine();
if (reply == "OK")
{
Console.WriteLine(clientInfo[0] + " location changed to be " + clientInfo[1]);
response = clientInfo[0] + " location changed to be " + clientInfo[1];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " location changed to be " + clientInfo[1];
}
else
{
Console.WriteLine("Bad reply: " + reply);
response = "Bad reply: " + reply;
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "Bad reply: " + reply;
}
sw.Close();
break;
case "-h9":
sw.WriteLine("PUT /" + clientInfo[0] + "\r\n");
sw.WriteLine(clientInfo[1]);
sw.Flush();
reply = sr.ReadLine();
if (reply.Equals("HTTP/0.9 200 OK"))
{
Console.WriteLine(clientInfo[0] + " location changed to be " + clientInfo[1]);
response = clientInfo[0] + " location changed to be " + clientInfo[1];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " location changed to be " + clientInfo[1];
}
//
else
{
Console.WriteLine("Bad reply: " + reply);
response = "Bad reply: " + reply;
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "Bad reply: " + reply;
}
break;
case "-h1":
sw.WriteLine("POST / HTTP/1.1");
sw.WriteLine("Host:" + " " + Servername);
string i = "name=" + clientInfo[0] + "&location=" + clientInfo[1];
sw.WriteLine("Content-Length:" + " " + i.Length);
sw.WriteLine();
sw.Write(i);
sw.Flush();
reply = sr.ReadLine();
if (reply.Equals("HTTP/1.1 200 OK"))
{
Console.WriteLine(clientInfo[0] + " location changed to be " + clientInfo[1] + "\r\n");
response = clientInfo[0] + " location changed to be " + clientInfo[1];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " location changed to be " + clientInfo[1];
}
else
{
Console.WriteLine("Bad reply: " + reply);
response = "Bad reply: " + reply;
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "Bad reply: " + reply;
}
break;
case "-h0":
sw.WriteLine("POST /" + clientInfo[0] + " " + "HTTP/1.0");
sw.WriteLine("Content-Length: " + clientInfo[1].Length);
sw.WriteLine();
sw.WriteLine(clientInfo[1]);
sw.Flush();
reply = sr.ReadLine();
if (reply.Equals("HTTP/1.0 200 OK"))
{
Console.WriteLine(clientInfo[0] + " location changed to be " + clientInfo[1]);
response = clientInfo[0] + " location changed to be " + clientInfo[1];
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = clientInfo[0] + " location changed to be " + clientInfo[1];
}
else
{
Console.WriteLine("Bad reply: " + reply);
response = "Bad reply: " + reply;
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "Bad reply: " + reply;
}
break;
}
return;
}
else
{
Console.WriteLine("Too many args");
response = "Too many args";
if (debugging)
{
Console.WriteLine(response);
}
debuggingresponse = "Too many args";
return;
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
if (debugging)
{
Console.WriteLine(e.Message);
}
debuggingresponse = e.Message;
}
}