private void Listen()
{
while (!ShutdownServer)
{
try
{
// Check for anybody whose authentication has expired.
Dictionary<string, DateTime>.Enumerator en = _authenticated.GetEnumerator();
while (en.MoveNext())
{
if (en.Current.Value < DateTime.Now)
{
_authenticated.Remove(en.Current.Key);
en = _authenticated.GetEnumerator();
}
}
if (Active)
{
Listener.Prefixes.Clear();
Listener.Prefixes.Add("http://*:" + Config.Settings.WebServerPort + "/");
Listener.Start();
while (!ShutdownServer && Active)
{
IAsyncResult result = Listener.BeginGetContext(ListenerCallback, Listener);
while (!ShutdownServer && !result.IsCompleted)
{
Thread.Sleep(500);
if (!Active || ShutdownServer)
{
result.AsyncWaitHandle.Close();
break;
}
}
}
if (!Disposed && Listener.IsListening) Listener.Stop();
}
else
Thread.Sleep(500);
}
catch (ObjectDisposedException)
{
// Just restart the listener.
Listener = new HttpListener();
}
catch (HttpListenerException ex)
{
var message = "The web server had an error occur: " + ex.Message;
if (ex.ErrorCode == 5)
message = "Unable to open the web server's port. You may need administrative rights to do so.";
if (ex.ErrorCode == 183)
message = "Port " + Config.Settings.WebServerPort +
" is in use. Please choose another port before starting the server again, or ensure " +
"the port is available.";
if (WebStatusChanged != null)
{
var e = new WebStatusChangedEventArgs
{
Active = false,
Error = true,
Message = message
};
WebStatusChanged(this, e);
}
else
MessageBox.Show(message, "Unexpected Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
if (!Disposed && Listener.IsListening) Listener.Stop();
Active = false;
}
catch (Exception ex)
{
if (WebStatusChanged != null)
{
var e = new WebStatusChangedEventArgs
{
Active = false,
Error = true,
Message = ex.Message
};
WebStatusChanged(this, e);
}
else
MessageBox.Show("The web server had an error occur: " + ex.Message, "Unexpected Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
if (!Disposed && Listener.IsListening) Listener.Stop();
Active = false;
}
}
}
private void ListenerCallback(IAsyncResult result)
{
// Short circuits the callback if we're disposing. Saves us a lot of hassle with error handling.
if (Disposed) return;
try
{
var myListener = (HttpListener) result.AsyncState;
HttpListenerContext context = myListener.EndGetContext(result);
HttpListenerRequest request = context.Request;
string content;
using (var sr = new StreamReader(request.InputStream))
content = sr.ReadToEnd();
string originalUrl = request.RawUrl;
string url = originalUrl;
if (url.Contains("?"))
{
content = url.Substring(url.IndexOf("?") + 1);
url = url.Substring(0, url.IndexOf("?"));
}
if (request.RemoteEndPoint == null) return;
var remoteIP = request.RemoteEndPoint.Address.ToString();
var isAuthenticated = Config.Settings.WebServerPassword.Length > 0 &&
_authenticated.ContainsKey(remoteIP);
var parameters = new Dictionary<string, string>();
if (content.Contains("="))
{
string[] values = content.Split(new[] {"&"}, StringSplitOptions.RemoveEmptyEntries);
foreach (string value in values)
{
if (value.Contains("="))
{
string key = value.Substring(0, value.IndexOf("="));
string innerValue = "";
if (key.Length + 1 != value.Length)
innerValue = value.Substring(value.IndexOf("=") + 1);
if (!parameters.ContainsKey(key)) parameters.Add(key, innerValue);
}
else if (!parameters.ContainsKey(value)) parameters.Add(value, "");
}
}
HttpListenerResponse response = context.Response;
switch (url.ToLower())
{
case "/Style.css":
{
string html = Resources.Style;
byte[] buffer = Encoding.UTF8.GetBytes(html);
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
break;
case "/login.htm":
{
string html;
if (isAuthenticated)
{
html = Resources.Authenticated;
html = html.Replace("<!-- url -->", parameters.ContainsKey("target") ?
HttpUtility.UrlDecode(parameters["target"]) : "/");
}
else if (parameters.ContainsKey("target"))
{
html = GetAuthenticationPage(parameters["target"]);
}
else if (parameters.ContainsKey("Password") &&
parameters["Password"] == Config.Settings.WebServerPassword)
{
_authenticated.Add(remoteIP, DateTime.Now.AddDays(1));
html = Resources.Authenticated;
html = html.Replace("<!-- url -->", parameters.ContainsKey("Target") ?
HttpUtility.UrlDecode(parameters["Target"]) : "/");
}
else
{
html = Resources.RetryAuthenticate;
html = html.Replace("<!-- url -->", parameters.ContainsKey("Target") ?
parameters["Target"] : "/");
}
byte[] buffer = Encoding.UTF8.GetBytes(html);
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
break;
case "/favicon.ico":
{
response.Headers.Add("Content-Type", "image/x-icon");
Icon favIcon = Resources.LuciusIcon;
var ms = new MemoryStream();
favIcon.Save(ms);
response.ContentLength64 = ms.Length;
ms.Seek(0, SeekOrigin.Begin);
var buffer = new byte[ms.Length];
ms.Read(buffer, 0, buffer.Length);
response.OutputStream.Write(buffer, 0, buffer.Length);
}
break;
case "/apple-touch-icon.png":
case "/apple-touch-icon-precomposed.png":
{
response.Headers.Add("Content-Type", "image/png");
Image appleIcon = Resources.AppleTouchIcon;
var ms = new MemoryStream();
appleIcon.Save(ms, ImageFormat.Png);
response.ContentLength64 = ms.Length;
ms.Seek(0, SeekOrigin.Begin);
var buffer = new byte[ms.Length];
ms.Read(buffer, 0, buffer.Length);
response.OutputStream.Write(buffer, 0, buffer.Length);
}
break;
case "/tournament.htm":
{
string name = "";
if (parameters.ContainsKey("name")) name = HttpUtility.UrlDecode(parameters["name"]);
if (string.IsNullOrEmpty(name))
{
url = "/";
break;
}
name = name.Replace("%20", " ");
var tournament = Config.Settings.GetTournament(name);
if (tournament == null)
{
url = "/";
break;
}
var html = Resources.ChooseRound;
html = html.Replace("<!-- name -->", tournament.Name + " -- Round " +
tournament.Rounds.Count + " of " +
tournament.TotalRounds);
var message = isAuthenticated ?
"\t\tChoose the Round to manage from the list below:<br />\r\n" +
"\t\t(Unscored rounds are listed first, followed by rounds with scores.)<br />" :
"\t\tBelow is a list of the Matches this round and their end scores, if recorded.<br />";
html = html.Replace("<!-- message -->", message);
var roundsScored = "";
var roundsOpen = "";
var id = 0;
foreach (var match in tournament.Rounds[tournament.Rounds.Count - 1].Matches)
{
var player1 = Config.Settings.GetPlayer(match.Players[0]);
if (match.Players.Count == 2)
{
var player2 = Config.Settings.GetPlayer(match.Players[1]);
if (isAuthenticated)
{
var tag = "\t\t<a href=\"Round.htm?name=" +
HttpUtility.UrlEncode(tournament.Name) + "&id=" +
id + "\"><p class=\"roundbordered\"><br />Match #" +
(id + 1) +
"<br />" + player1.Name + " VS " + player2.Name + "<br />";
if (match.Results.Count > 0)
roundsScored += tag + "SCORED -> " +
match.Results[player1.ID].VictoryPoints +
" VPs VS " +
match.Results[player2.ID].VictoryPoints +
" VPs <- SCORED<br /><br /></p></a>\r\n";
else
roundsOpen += tag + "0 VPs VS 0 VPs<br /><br /></p></a>\r\n";
}
else
{
roundsScored += "\t\t<p class=\"round\"><br />Match #" + (id + 1) +
"<br />" + player1.Name + " VS " + player2.Name + "<br />";
if (match.Results.Count > 0)
roundsScored += "SCORED -> " +
match.Results[player1.ID].VictoryPoints +
" VPs VS " +
match.Results[player2.ID].VictoryPoints +
" VPs <- SCORED<br /></p>\r\n";
else
roundsScored += "0 VPs VS 0 VPs<br /></p>\r\n";
}
}
else
roundsScored += "\t\t<p class=\"round\"><br />" + player1.Name +
" -- Bye Round<br /><br /></p>\r\n";
id++;
}
if (isAuthenticated)
{
string scores = "<p class=\"round\">Rounds with Scores<br /></p><br />" + roundsScored;
if (roundsOpen.Length > 0)
scores = "<p class=\"round\">Open Rounds<br /></p><br />" + roundsOpen +
"<br /><br />\r\n" + scores;
html = html.Replace("<!-- entries -->", scores);
}
else
{
roundsScored += "\r\n\t\t<a href=\"/Login.htm?target=" + originalUrl +
"\"><p class=\"name\"><br />Log In to Edit Rounds<br /><br /></p></a>\r\n";
html = html.Replace("<!-- entries -->", roundsScored);
}
byte[] buffer = Encoding.UTF8.GetBytes(html);
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
break;
case "/round.htm":
{
string html;
if (!isAuthenticated)
html = GetAuthenticationPage(originalUrl);
else
{
var name = "";
if (parameters.ContainsKey("name")) name = HttpUtility.UrlDecode(parameters["name"]);
var id = -1;
if (parameters.ContainsKey("id")) int.TryParse(parameters["id"], out id);
if (string.IsNullOrEmpty(name) || id <= -1)
{
url = "/";
break;
}
var tournament = Config.Settings.GetTournament(name);
if (tournament == null)
{
url = "/";
break;
}
if (id >= tournament.Rounds[tournament.Rounds.Count - 1].Matches.Count)
{
url = "/";
break;
}
var match = tournament.Rounds[tournament.Rounds.Count - 1].Matches[id];
var player1 = Config.Settings.GetPlayer(match.Players[0]);
var player2 = Config.Settings.GetPlayer(match.Players[1]);
html = Resources.EditRound;
html = html.Replace("<!-- error -->", "");
html = html.Replace("<!-- player1 -->", player1.Name);
html = html.Replace("<!-- player1VP -->", match.Results.ContainsKey(player1.ID) ?
match.Results[player1.ID].VictoryPoints.ToString() : "0");
html = html.Replace("<!-- player2 -->", player2.Name);
html = html.Replace("<!-- player2VP -->", match.Results.ContainsKey(player2.ID) ?
match.Results[player2.ID].VictoryPoints.ToString() : "0");
html = html.Replace("<!-- name -->", HttpUtility.UrlEncode(tournament.Name));
html = html.Replace("<!-- player1ID -->", player1.ID);
html = html.Replace("<!-- player2ID -->", player2.ID);
html = html.Replace("<!-- ID -->", id.ToString());
}
var buffer = Encoding.UTF8.GetBytes(html);
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
break;
case "/submit.htm":
{
string mode = "";
if (parameters.ContainsKey("Mode")) mode = parameters["Mode"];
if (mode == "UpdateScores")
{
string html;
if (!isAuthenticated)
html = GetAuthenticationPage(originalUrl);
else
{
var name = HttpUtility.UrlDecode(parameters["Name"]);
name = name.Replace("+", " ");
var player1ID = parameters["Player1ID"];
var player2ID = parameters["Player2ID"];
var player1Vp = parameters["Player1VP"];
var player2Vp = parameters["Player2VP"];
var e = new MatchUpdateFromWebEventArgs
{
TournamentName = name,
Player1ID = player1ID,
Player2ID = player2ID
};
if (player1Vp.ToUpper() != "F")
{
int vp;
if (!int.TryParse(player1Vp, out vp))
{
url = "/";
break;
}
e.Player1Vp = vp;
}
else
e.Player1Forfeit = true;
if (player2Vp.ToUpper() != "F")
{
int vp;
if (!int.TryParse(player2Vp, out vp))
{
url = "/";
break;
}
e.Player2Vp = vp;
}
else
e.Player2Forfeit = true;
if (MatchUpdateFromWeb != null)
MatchUpdateFromWeb(this, e);
html = Resources.Submitted;
html = html.Replace("<!-- url -->", "Tournament.htm?name=" + parameters["Name"]);
const string message = "Scores have been successfully submitted. Redirecting back to " +
"the tournament page in a few seconds...";
html = html.Replace("<!-- message -->", message);
}
var buffer = Encoding.UTF8.GetBytes(html);
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
else
url = "/";
}
break;
default:
url = "/";
break;
}
// We may fall through to here if we got a bad URL.
if (url.ToLower() == "/")
{
var html = Resources.ChooseTournament;
var tournamentHTML = "";
foreach (var tournament in Config.Settings.Tournaments)
if (!tournament.Completed && tournament.Rounds.Count > 0)
{
var currentRound = tournament.Rounds.Count;
if (tournament.Rounds[currentRound - 1].Completed)
{
tournamentHTML += "\t\t<a href=\"Tournament.htm?name=" +
HttpUtility.UrlEncode(tournament.Name) + "\">" + "<p><br />" +
tournament.Name + " - Round " + currentRound +
" Completed<br /><br /></p>\r\n";
}
else
{
tournamentHTML += "\t\t<a href=\"Tournament.htm?name=" +
HttpUtility.UrlEncode(tournament.Name) + "\">" + "<p><br />" +
tournament.Name + " - Round " + currentRound +
" Active<br /><br /></p>\r\n";
}
}
if (tournamentHTML.Length == 0)
tournamentHTML = "\t\tThere are no active tournaments to record scores for!<br />";
html = html.Replace("<!-- entries -->", tournamentHTML);
var buffer = Encoding.UTF8.GetBytes(html);
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
response.OutputStream.Close();
response.Close();
}
catch (Exception ex)
{
// Code 995 occurs when the HttpListener is stopped. We can ignore this error.
if (ex is HttpListenerException && ((HttpListenerException) ex).ErrorCode == 995)
return;
if (WebStatusChanged == null) return;
var e = new WebStatusChangedEventArgs
{
Active = true,
Error = true,
Message = ex.Message
};
WebStatusChanged(this, e);
}
}
private void Server_WebStatusChanged(object sender, WebStatusChangedEventArgs e)
{
if (!e.Active)
{
if (!lblWebStatus.Text.StartsWith("Listening") && LogWindow != null)
LogWindow.WriteLog("Web Server Stopped Listening.");
string IP = LocalIPAddress();
if (IP == null)
lblWebStatus.Text = "Offline -- No Network Connection";
else
lblWebStatus.Text = "Offline";
}
if (e.Message.Length > 0 && LogWindow != null)
LogWindow.WriteLog("[WebServer] " + (e.Error ? "Error: " : "") + e.Message);
else
MessageBox.Show(e.Message, "Web Server Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}