private void ReadConnectionInitializationStep(PendingClient pendingClient, IReadMessage inc)
{
if (netServer == null)
{
return;
}
pendingClient.TimeOut = NetworkConnection.TimeoutThreshold;
ConnectionInitialization initializationStep = (ConnectionInitialization)inc.ReadByte();
//DebugConsole.NewMessage(initializationStep+" "+pendingClient.InitializationStep);
if (pendingClient.InitializationStep != initializationStep)
{
return;
}
pendingClient.UpdateTime = Timing.TotalTime + Timing.Step;
switch (initializationStep)
{
case ConnectionInitialization.SteamTicketAndVersion:
string name = Client.SanitizeName(inc.ReadString());
UInt64 steamId = inc.ReadUInt64();
UInt16 ticketLength = inc.ReadUInt16();
inc.BitPosition += ticketLength * 8; //skip ticket, owner handles steam authentication
if (!Client.IsValidName(name, serverSettings))
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidName, "The name \"" + name + "\" is invalid");
return;
}
string version = inc.ReadString();
bool isCompatibleVersion = NetworkMember.IsCompatible(version, GameMain.Version.ToString()) ?? false;
if (!isCompatibleVersion)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidVersion,
$"DisconnectMessage.InvalidVersion~[version]={GameMain.Version.ToString()}~[clientversion]={version}");
GameServer.Log(name + " (" + pendingClient.SteamID.ToString() + ") couldn't join the server (incompatible game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(name + " (" + pendingClient.SteamID.ToString() + ") couldn't join the server (incompatible game version)", Microsoft.Xna.Framework.Color.Red);
return;
}
int contentPackageCount = (int)inc.ReadVariableUInt32();
List <ClientContentPackage> clientContentPackages = new List <ClientContentPackage>();
for (int i = 0; i < contentPackageCount; i++)
{
string packageName = inc.ReadString();
string packageHash = inc.ReadString();
clientContentPackages.Add(new ClientContentPackage(packageName, packageHash));
}
//check if the client is missing any of our packages
List <ContentPackage> missingPackages = new List <ContentPackage>();
foreach (ContentPackage serverContentPackage in GameMain.SelectedPackages)
{
if (!serverContentPackage.HasMultiplayerIncompatibleContent)
{
continue;
}
bool packageFound = clientContentPackages.Any(cp => cp.Name == serverContentPackage.Name && cp.Hash == serverContentPackage.MD5hash.Hash);
if (!packageFound)
{
missingPackages.Add(serverContentPackage);
}
}
//check if the client is using packages we don't have
List <ClientContentPackage> redundantPackages = new List <ClientContentPackage>();
foreach (ClientContentPackage clientContentPackage in clientContentPackages)
{
bool packageFound = GameMain.SelectedPackages.Any(cp => cp.Name == clientContentPackage.Name && cp.MD5hash.Hash == clientContentPackage.Hash);
if (!packageFound)
{
redundantPackages.Add(clientContentPackage);
}
}
if (missingPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackage~[missingcontentpackage]={GetPackageStr(missingPackages[0])}");
GameServer.Log(name + " (" + pendingClient.SteamID + ") couldn't join the server (missing content package " + GetPackageStr(missingPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
else if (missingPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
missingPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackages~[missingcontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + pendingClient.SteamID + ") couldn't join the server (missing content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackage~[incompatiblecontentpackage]={GetPackageStr(redundantPackages[0])}");
GameServer.Log(name + " (" + pendingClient.SteamID + ") couldn't join the server (using an incompatible content package " + GetPackageStr(redundantPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
redundantPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackages~[incompatiblecontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + pendingClient.SteamID + ") couldn't join the server (using incompatible content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (!pendingClient.AuthSessionStarted)
{
pendingClient.InitializationStep = serverSettings.HasPassword ? ConnectionInitialization.Password: ConnectionInitialization.Success;
pendingClient.Name = name;
pendingClient.AuthSessionStarted = true;
}
break;
case ConnectionInitialization.Password:
int pwLength = inc.ReadByte();
byte[] incPassword = inc.ReadBytes(pwLength);
if (pendingClient.PasswordSalt == null)
{
DebugConsole.ThrowError("Received password message from client without salt");
return;
}
if (serverSettings.IsPasswordCorrect(incPassword, pendingClient.PasswordSalt.Value))
{
pendingClient.InitializationStep = ConnectionInitialization.Success;
}
else
{
pendingClient.Retries++;
if (pendingClient.Retries >= 3)
{
string banMsg = "Failed to enter correct password too many times";
serverSettings.BanList.BanPlayer(pendingClient.Name, pendingClient.SteamID, banMsg, null);
RemovePendingClient(pendingClient, DisconnectReason.Banned, banMsg);
return;
}
}
pendingClient.UpdateTime = Timing.TotalTime;
break;
}
}
private void ClientInitRequest(NetIncomingMessage inc)
{
Boolean isNilModClient = false;
if (ConnectedClients.Find(c => c.Connection == inc.SenderConnection) != null)
{
//this client was already authenticated
//another init request means they didn't get any update packets yet
return;
}
UnauthenticatedClient unauthClient = unauthenticatedClients.Find(uc => uc.Connection == inc.SenderConnection);
if (unauthClient == null)
{
//client did not ask for nonce first, can't authorize
inc.SenderConnection.Disconnect("Client (" + unauthClient.Connection.RemoteEndPoint.Address.ToString() + ") did not properly request authentication.");
return;
}
if (!string.IsNullOrEmpty(password))
{
//decrypt message and compare password
string saltedPw = password;
saltedPw = saltedPw + Convert.ToString(unauthClient.Nonce);
saltedPw = Encoding.UTF8.GetString(NetUtility.ComputeSHAHash(Encoding.UTF8.GetBytes(saltedPw)));
string clPw = inc.ReadString();
if (clPw != saltedPw)
{
unauthClient.failedAttempts++;
if (unauthClient.failedAttempts > 3)
{
//disconnect and ban after too many failed attempts
banList.BanPlayer("PASSWORDBAN", unauthClient.Connection.RemoteEndPoint.Address.ToString(), "Too many failed login attempts.", null);
DisconnectUnauthClient(inc, unauthClient, "Too many failed login attempts. You have been automatically banned from the server.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)", Color.Red);
GameServer.LogToClientconsole(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)");
return;
}
else
{
//not disconnecting the player here, because they'll still use the same connection and nonce if they try logging in again
NetOutgoingMessage reject = server.CreateMessage();
reject.Write((byte)ServerPacketHeader.AUTH_FAILURE);
reject.Write("Wrong password! You have " + Convert.ToString(4 - unauthClient.failedAttempts) + " more attempts before you're banned from the server.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)", Color.Red);
GameServer.LogToClientconsole(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)");
server.SendMessage(reject, unauthClient.Connection, NetDeliveryMethod.Unreliable);
unauthClient.AuthTimer = 10.0f;
return;
}
}
}
string clVersion = inc.ReadString();
string clPackageName = inc.ReadString();
string clPackageHash = inc.ReadString();
string clName = Client.SanitizeName(inc.ReadString());
if (string.IsNullOrWhiteSpace(clName))
{
DisconnectUnauthClient(inc, unauthClient, "You need a name.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)", Color.Red);
GameServer.LogToClientconsole(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)");
return;
}
if (clVersion != GameMain.Version.ToString())
{
DisconnectUnauthClient(inc, unauthClient, "Version " + GameMain.Version + " required to connect to the server (Your version: " + clVersion + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version) - CLVersion: " + clVersion + " vs servers " + GameMain.Version, ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version) - CLVersion: " + clVersion + " vs servers " + GameMain.Version, Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version) - CLVersion: " + clVersion + " vs servers " + GameMain.Version);
return;
}
if (clPackageName != GameMain.SelectedPackage.Name)
{
DisconnectUnauthClient(inc, unauthClient, "Your content package (" + clPackageName + ") doesn't match the server's version (" + GameMain.SelectedPackage.Name + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server with Incorrect Content Package: (" + clPackageName + ") vs servers (" + GameMain.SelectedPackage.Name + ")", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server with Incorrect Content Package: (" + clPackageName + ") vs servers (" + GameMain.SelectedPackage.Name + ")", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server with Incorrect Content Package: (" + clPackageName + ") vs servers (" + GameMain.SelectedPackage.Name + ")");
return;
}
if (clPackageHash.Substring(0, 7).Contains("NILMOD_"))
{
if (!GameMain.NilMod.AllowNilModClients)
{
DisconnectUnauthClient(inc, unauthClient, "This server does not permit Nilmod clients (Please rejoin using Vanilla).");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Nilmod clients are not permitted to connect).", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Nilmod clients are not permitted to connect).", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Nilmod clients are not permitted to connect).");
return;
}
else
{
isNilModClient = true;
clPackageHash = clPackageHash.Substring(7);
}
}
else
{
if (!GameMain.NilMod.AllowVanillaClients)
{
DisconnectUnauthClient(inc, unauthClient, "This server does not permit Vanilla clients (Please rejoin using Nilmod).");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Vanilla clients are not permitted to connect).", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Vanilla clients are not permitted to connect).", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Vanilla clients are not permitted to connect).");
return;
}
}
if (GameMain.NilMod.BypassMD5 == true)
{
if (clPackageHash != GameMain.NilMod.ServerMD5A && clPackageHash != GameMain.NilMod.ServerMD5B)
{
DisconnectUnauthClient(inc, unauthClient, "Your content package (MD5: " + clPackageHash + ") doesn't match the server's version (MD5: " + GameMain.NilMod.ServerMD5A + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash) MD5: (" + clPackageHash + ") vs servers MD5A: (" + GameMain.NilMod.ServerMD5A + "), MD5B: (" + GameMain.NilMod.ServerMD5B + ")", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash):" + clPackageHash + " vs servers " + GameMain.NilMod.ServerMD5A + ", (" + GameMain.NilMod.ServerMD5B + ")", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash):" + clPackageHash + " vs servers " + GameMain.NilMod.ServerMD5A + ", (" + GameMain.NilMod.ServerMD5B + ")");
return;
}
}
else
{
if (clPackageHash != GameMain.SelectedPackage.MD5hash.Hash)
{
DisconnectUnauthClient(inc, unauthClient, "Your content package (MD5: " + clPackageHash + ") doesn't match the server's version (MD5: " + GameMain.SelectedPackage.MD5hash.Hash + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash)");
return;
}
}
if (!whitelist.IsWhiteListed(clName, inc.SenderConnection.RemoteEndPoint.Address.ToString()))
{
DisconnectUnauthClient(inc, unauthClient, "You're not in this server's whitelist.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)");
return;
}
if (GameMain.NilMod.MinimumNameLength > clName.Length)
{
DisconnectUnauthClient(inc, unauthClient, "Your name is too short, Minimum length on this server is " + GameMain.NilMod.MinimumNameLength + " characters.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name too short)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name too short, minimum length is " + GameMain.NilMod.MinimumNameLength + " characters)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name too short, minimum length is " + GameMain.NilMod.MinimumNameLength + " characters)");
return;
}
if (!Client.IsValidName(clName))
{
DisconnectUnauthClient(inc, unauthClient, "Your name contains illegal symbols.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)");
return;
}
if (!GameMain.NilMod.AllowCyrillicText && Regex.IsMatch(clName, @"\p{IsCyrillic}"))
{
DisconnectUnauthClient(inc, unauthClient, "This server does not allow Cyrillic alphabets.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Name contains cyrillic characters)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Name contains cyrillic characters)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Name contains cyrillic characters)");
return;
}
if (!GameMain.NilMod.AllowEnglishText && Regex.IsMatch(clName, "^[a-zA-Z]*$"))
{
DisconnectUnauthClient(inc, unauthClient, "This server does not allow English alphabets.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Name contains english characters)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Name contains english characters)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Name contains english characters)");
return;
}
//Nilmod prevent players rejoining as server hosts current name OR server name.
if (Homoglyphs.Compare(clName.ToLower(), Name.ToLower()) || Homoglyphs.Compare(clName.ToLower(), GameMain.NilMod.PlayYourselfName.ToLower()) || Homoglyphs.Compare(clName.ToLower(), NilMod.NilModGriefWatcher.GriefWatchName))
{
DisconnectUnauthClient(inc, unauthClient, "That name is taken by the server.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)");
return;
}
Client nameTaken = ConnectedClients.Find(c => Homoglyphs.Compare(c.Name.ToLower(), clName.ToLower()));
if (nameTaken != null)
{
if (nameTaken.Connection.RemoteEndPoint.Address.ToString() == inc.SenderEndPoint.Address.ToString())
{
//both name and IP address match, replace this player's connection
nameTaken.Connection.Disconnect("Your session was taken by a new connection on the same IP address.");
nameTaken.Connection = unauthClient.Connection;
nameTaken.InitClientSync(); //reinitialize sync ids because this is a new connection
unauthenticatedClients.Remove(unauthClient);
unauthClient = null;
return;
}
else
{
//can't authorize this client
DisconnectUnauthClient(inc, unauthClient, "That name is taken.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)");
return;
}
}
//MaxIdenticalIPConnections
List <Client> SimilarIP = ConnectedClients.FindAll(c => c.Connection.RemoteEndPoint.Address.ToString() == inc.SenderConnection.RemoteEndPoint.Address.ToString());
if (SimilarIP.Count >= GameMain.NilMod.MaxIdenticalIPConnections)
{
//can't authorize this client
DisconnectUnauthClient(inc, unauthClient, "Too many similar IPs are on the server, max is " + GameMain.NilMod.MaxIdenticalIPConnections);
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Max Identical IP Connections exceeded)", ServerLog.MessageType.Connection);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Max Identical IP Connections exceeded, max is " + GameMain.NilMod.MaxIdenticalIPConnections + ")", Color.Red);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (Max Identical IP Connections exceeded, max is " + GameMain.NilMod.MaxIdenticalIPConnections + ")");
return;
}
KickedClient kickedclient = null;
if (GameMain.NilMod.KickedClients.Count > 0)
{
for (int i = GameMain.NilMod.KickedClients.Count - 1; i >= 0; i--)
{
if (GameMain.NilMod.KickedClients[i].IPAddress == unauthClient.Connection.RemoteEndPoint.Address.ToString())
{
if (GameMain.NilMod.KickedClients[i].RejoinTimer > 0f)
{
DisconnectUnauthClient(inc, unauthClient, "You have been kicked for " + ToolBox.SecondsToReadableTime(GameMain.NilMod.KickedClients[i].RejoinTimer) + ".\n" + GameMain.NilMod.KickedClients[i].KickReason.Replace("You have been kicked from the server.", ""));
return;
}
else
{
kickedclient = GameMain.NilMod.KickedClients[i];
}
}
}
}
if (banList.IsBanned(inc.SenderEndPoint.Address.ToString()))
{
if (GameMain.NilMod.EnablePlayerLogSystem)
{
DebugConsole.NewMessage("Banned Player tried to join the server (" + inc.SenderEndPoint.Address.ToString() + " - " + clName.ToString() + ")" + NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, false, true, false), Color.Red);
ServerLog.WriteLine("Banned Player tried to join the server (" + inc.SenderEndPoint.Address.ToString() + " - " + clName.ToString() + ")" + NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, false, true, false), ServerLog.MessageType.Connection);
GameServer.LogToClientconsole("Banned Player tried to join the server (" + inc.SenderEndPoint.Address.ToString() + " - " + clName.ToString() + ")" + NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, false, true, false));
}
else
{
DebugConsole.NewMessage("Banned Player tried to join the server (" + inc.SenderEndPoint.Address.ToString() + " - " + clName.ToString() + ")", Color.Red);
ServerLog.WriteLine("Banned Player tried to join the server (" + inc.SenderEndPoint.Address.ToString() + " - " + clName.ToString() + ")", ServerLog.MessageType.Connection);
GameServer.LogToClientconsole("Banned Player tried to join the server (" + inc.SenderEndPoint.Address.ToString() + " - " + clName.ToString() + ")");
}
string banText = "";
if (GameMain.NilMod.BansInfoAddBanName)
{
banText = "You've been banned as '" + banList.GetBanName(inc.SenderEndPoint.Address.ToString()) + "'.";
}
else
{
banText = "You've been banned from the server.";
}
//Add Ban duration text
if (banList.GetBanExpiry(inc.SenderEndPoint.Address.ToString()) != null && GameMain.NilMod.BansInfoAddBanDuration)
{
if (GameMain.NilMod.BansInfoUseRemainingTime)
{
TimeSpan banRemaining = Convert.ToDateTime(banList.GetBanExpiry(inc.SenderEndPoint.Address.ToString())).Subtract(DateTime.Now);
banText += "\n" + "Expires in: ";
if (banRemaining.Days > 0)
{
banText += banRemaining.Days + " Days, ";
}
if (banRemaining.Hours > 0)
{
banText += banRemaining.Hours + " Hours, ";
}
if (banRemaining.Minutes > 0)
{
banText += banRemaining.Minutes + " Minutes, ";
}
banText = banText.Substring(0, banText.Length - 2);
}
else
{
banText += "\n" + "Expire on: " + banList.GetBanExpiry(inc.SenderEndPoint.Address.ToString())
+ "\n" + "Currently: " + DateTime.Now.ToString();
}
}
//Permanent ban text
else if (banList.GetBanExpiry(inc.SenderEndPoint.Address.ToString()) == null && GameMain.NilMod.BansInfoAddBanDuration)
{
if (GameMain.NilMod.BansInfoAddBanName)
{
banText = "You've been permanently banned as '" + banList.GetBanName(inc.SenderEndPoint.Address.ToString()) + "'";
}
else
{
banText = "You've been permanently banned from the server.";
}
}
if (GameMain.NilMod.BansInfoAddCustomString)
{
banText += "\n" + GameMain.NilMod.BansInfoCustomtext;
}
if (GameMain.NilMod.BansInfoAddBanReason)
{
banText += "\n" + "for:" + banList.GetBanReason(inc.SenderEndPoint.Address.ToString());
}
DisconnectUnauthClient(inc, unauthClient, banText);
/*
* if (banList.GetBanExpiry(inc.SenderEndPoint.Address.ToString()) != null)
* {
* //None Permament Ban
* DisconnectUnauthClient(inc, unauthClient, "You have been banned As '" + banList.GetBanName(inc.SenderEndPoint.Address.ToString())
+ "' with reason: " + banList.GetBanReason(inc.SenderEndPoint.Address.ToString())
+ " \n Expires On: " + banList.GetBanExpiry(inc.SenderEndPoint.Address.ToString())
+ " (Currently: " + DateTime.Now.ToString()
+ "). \n" + "Appeal at www.barotraumaserver.com");
+ }
+ else
+ {
+ //Permanent ban
+ DisconnectUnauthClient(inc, unauthClient, "You have been banned As '" + banList.GetBanName(inc.SenderEndPoint.Address.ToString()) + "' with reason: " + banList.GetBanReason(inc.SenderEndPoint.Address.ToString()) + "\n" + " \n This ban is permanent. \n" + "Appeal at Blabla (Custom text here)! \n \n \n \n \n \n.");
+ }
*/
return;
}
//new client
Client newClient = new Client(clName, GetNewClientID());
newClient.IsNilModClient = isNilModClient;
newClient.RequiresNilModSync = isNilModClient;
newClient.NilModSyncResendTimer = 4f;
newClient.InitClientSync();
newClient.Connection = unauthClient.Connection;
unauthenticatedClients.Remove(unauthClient);
unauthClient = null;
SavedClientPermission savedPermissions = clientPermissions.Find(cp => cp.IP == newClient.Connection.RemoteEndPoint.Address.ToString());
if (savedPermissions == null)
{
savedPermissions = defaultpermission;
}
newClient.OwnerSlot = savedPermissions.OwnerSlot;
newClient.AdministratorSlot = savedPermissions.AdministratorSlot;
newClient.TrustedSlot = savedPermissions.TrustedSlot;
newClient.AllowInGamePM = savedPermissions.AllowInGamePM;
newClient.GlobalChatSend = savedPermissions.GlobalChatSend;
newClient.GlobalChatReceive = savedPermissions.GlobalChatReceive;
newClient.KarmaImmunity = savedPermissions.KarmaImmunity;
newClient.BypassSkillRequirements = savedPermissions.BypassSkillRequirements;
newClient.PrioritizeJob = savedPermissions.PrioritizeJob;
newClient.IgnoreJobMinimum = savedPermissions.IgnoreJobMinimum;
newClient.KickImmunity = savedPermissions.KickImmunity;
newClient.BanImmunity = savedPermissions.BanImmunity;
newClient.HideJoin = savedPermissions.HideJoin;
newClient.AccessDeathChatAlive = savedPermissions.AccessDeathChatAlive;
newClient.AdminPrivateMessage = savedPermissions.AdminPrivateMessage;
newClient.AdminChannelSend = savedPermissions.AdminChannelSend;
newClient.AdminChannelReceive = savedPermissions.AdminChannelReceive;
newClient.SendServerConsoleInfo = savedPermissions.SendServerConsoleInfo;
newClient.CanBroadcast = savedPermissions.CanBroadcast;
newClient.SetPermissions(savedPermissions.Permissions, savedPermissions.PermittedCommands);
ConnectedClients.Add(newClient);
#if CLIENT
GameSession.inGameInfo.AddClient(newClient);
GameMain.NetLobbyScreen.AddPlayer(newClient.Name);
#endif
if (GameMain.NilMod.EnableVPNBanlist)
{
CoroutineManager.StartCoroutine(NilMod.NilModVPNBanlist.CheckVPNBan(newClient, clName.ToString()), "NilModVPNBanlist");
}
if (!GameMain.NilMod.EnableVPNBanlist)
{
if (GameMain.NilMod.EnablePlayerLogSystem)
{
if (!newClient.HideJoin)
{
GameMain.Server.SendChatMessage(NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, false, false, true), ChatMessageType.Server, null);
}
DebugConsole.NewMessage(NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, true, true, true), Color.White);
Log(NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, true, true, true), ServerLog.MessageType.Connection);
GameServer.LogToClientconsole(NilMod.NilModPlayerLog.ListPrevious(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName, true, true, true));
NilMod.NilModPlayerLog.LogPlayer(inc.SenderConnection.RemoteEndPoint.Address.ToString(), clName);
}
else
{
DisconnectedCharacter ReconnectedClient = null;
if (GameMain.NilMod.DisconnectedCharacters.Count > 0)
{
ReconnectedClient = GameMain.NilMod.DisconnectedCharacters.Find(dc => dc.IPAddress == inc.SenderConnection.RemoteEndPoint.Address.ToString() && dc.clientname == clName);
}
if (kickedclient != null)
{
GameMain.Server.SendChatMessage("Recently Kicked Player " + clName + " (" + kickedclient.clientname + ") has rejoined the server.", ChatMessageType.Server, null);
DebugConsole.NewMessage("Recently Kicked Player " + clName + " (" + kickedclient.clientname + ") (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has joined the server.", Color.White);
Log("Recently Kicked Player " + clName + " (" + kickedclient.clientname + ") (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has joined the server.", ServerLog.MessageType.Connection);
GameServer.LogToClientconsole("Recently Kicked Player " + clName + " (" + kickedclient.clientname + ") (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has joined the server.");
if (GameMain.NilMod.ClearKickStateNameOnRejoin)
{
GameMain.NilMod.KickedClients.Remove(kickedclient);
}
else
{
kickedclient.ExpireTimer += GameMain.NilMod.KickStateNameTimerIncreaseOnRejoin;
if (kickedclient.ExpireTimer > GameMain.NilMod.KickMaxStateNameTimer)
{
kickedclient.ExpireTimer = GameMain.NilMod.KickMaxStateNameTimer;
}
}
}
else if (ReconnectedClient == null)
{
if (!newClient.HideJoin)
{
GameMain.Server.SendChatMessage(clName + " has joined the server.", ChatMessageType.Server, null);
}
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has joined the server.", Color.White);
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has joined the server.", ServerLog.MessageType.Connection);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has joined the server.");
}
else
{
if (!newClient.HideJoin)
{
GameMain.Server.SendChatMessage(clName + " has reconnected to the server.", ChatMessageType.Server, null);
}
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has reconnected to the server.", Color.White);
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has reconnected to the server.", ServerLog.MessageType.Connection);
GameServer.LogToClientconsole(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") has reconnected to the server.");
}
}
}
}
private void ReadConnectionInitializationStep(PendingClient pendingClient, NetIncomingMessage inc)
{
if (netServer == null)
{
return;
}
pendingClient.TimeOut = NetworkConnection.TimeoutThreshold;
ConnectionInitialization initializationStep = (ConnectionInitialization)inc.ReadByte();
//DebugConsole.NewMessage(initializationStep+" "+pendingClient.InitializationStep);
if (pendingClient.InitializationStep != initializationStep)
{
return;
}
pendingClient.UpdateTime = Timing.TotalTime + Timing.Step;
switch (initializationStep)
{
case ConnectionInitialization.SteamTicketAndVersion:
string name = Client.SanitizeName(inc.ReadString());
int ownKey = inc.ReadInt32();
UInt64 steamId = inc.ReadUInt64();
UInt16 ticketLength = inc.ReadUInt16();
byte[] ticket = inc.ReadBytes(ticketLength);
if (!Client.IsValidName(name, serverSettings))
{
if (OwnerConnection != null ||
!IPAddress.IsLoopback(pendingClient.Connection.RemoteEndPoint.Address.MapToIPv4NoThrow()) &&
ownerKey == null || ownKey == 0 && ownKey != ownerKey)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidName, "The name \"" + name + "\" is invalid");
return;
}
}
string version = inc.ReadString();
bool isCompatibleVersion = NetworkMember.IsCompatible(version, GameMain.Version.ToString()) ?? false;
if (!isCompatibleVersion)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidVersion,
$"DisconnectMessage.InvalidVersion~[version]={GameMain.Version}~[clientversion]={version}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(name + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible game version)", Microsoft.Xna.Framework.Color.Red);
return;
}
Client nameTaken = GameMain.Server.ConnectedClients.Find(c => Homoglyphs.Compare(c.Name.ToLower(), name.ToLower()));
if (nameTaken != null)
{
RemovePendingClient(pendingClient, DisconnectReason.NameTaken, "");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (name too similar to the name of the client \"" + nameTaken.Name + "\").", ServerLog.MessageType.Error);
return;
}
int contentPackageCount = inc.ReadVariableInt32();
List <ClientContentPackage> clientContentPackages = new List <ClientContentPackage>();
for (int i = 0; i < contentPackageCount; i++)
{
string packageName = inc.ReadString();
string packageHash = inc.ReadString();
clientContentPackages.Add(new ClientContentPackage(packageName, packageHash));
}
//check if the client is missing any of our packages
List <ContentPackage> missingPackages = new List <ContentPackage>();
foreach (ContentPackage serverContentPackage in GameMain.SelectedPackages)
{
if (!serverContentPackage.HasMultiplayerIncompatibleContent)
{
continue;
}
bool packageFound = clientContentPackages.Any(cp => cp.Name == serverContentPackage.Name && cp.Hash == serverContentPackage.MD5hash.Hash);
if (!packageFound)
{
missingPackages.Add(serverContentPackage);
}
}
//check if the client is using packages we don't have
List <ClientContentPackage> redundantPackages = new List <ClientContentPackage>();
foreach (ClientContentPackage clientContentPackage in clientContentPackages)
{
bool packageFound = GameMain.SelectedPackages.Any(cp => cp.Name == clientContentPackage.Name && cp.MD5hash.Hash == clientContentPackage.Hash);
if (!packageFound)
{
redundantPackages.Add(clientContentPackage);
}
}
if (missingPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackage~[missingcontentpackage]={GetPackageStr(missingPackages[0])}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (missing content package " + GetPackageStr(missingPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
else if (missingPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
missingPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackages~[missingcontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (missing content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackage~[incompatiblecontentpackage]={GetPackageStr(redundantPackages[0])}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (using an incompatible content package " + GetPackageStr(redundantPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
redundantPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackages~[incompatiblecontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (using incompatible content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (pendingClient.SteamID == null)
{
bool requireSteamAuth = GameMain.Config.RequireSteamAuthentication;
#if DEBUG
requireSteamAuth = false;
#endif
<< << << < HEAD
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.InitializationStep = serverSettings.HasPassword ? ConnectionInitialization.Password : ConnectionInitialization.ContentPackageOrder;
private void ClientInitRequest(NetIncomingMessage inc)
{
DebugConsole.Log("Received client init request");
if (ConnectedClients.Find(c => c.Connection == inc.SenderConnection) != null)
{
//this client was already authenticated
//another init request means they didn't get any update packets yet
DebugConsole.Log("Client already connected, ignoring...");
return;
}
UnauthenticatedClient unauthClient = unauthenticatedClients.Find(uc => uc.Connection == inc.SenderConnection);
if (unauthClient == null)
{
//client did not ask for nonce first, can't authorize
inc.SenderConnection.Disconnect(DisconnectReason.AuthenticationRequired.ToString());
if (unauthClient.SteamID > 0)
{
Steam.SteamManager.StopAuthSession(unauthClient.SteamID);
}
return;
}
if (serverSettings.HasPassword && inc.SenderConnection != OwnerConnection)
{
//decrypt message and compare password
string clPw = inc.ReadString();
if (!serverSettings.IsPasswordCorrect(clPw, unauthClient.Nonce))
{
unauthClient.FailedAttempts++;
if (unauthClient.FailedAttempts > 3)
{
//disconnect and ban after too many failed attempts
serverSettings.BanList.BanPlayer("Unnamed", unauthClient.Connection.RemoteEndPoint.Address, "DisconnectMessage.TooManyFailedLogins", duration: null);
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.TooManyFailedLogins, "");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)", Color.Red);
return;
}
else
{
//not disconnecting the player here, because they'll still use the same connection and nonce if they try logging in again
NetOutgoingMessage reject = server.CreateMessage();
reject.Write((byte)ServerPacketHeader.AUTH_FAILURE);
reject.Write("Wrong password! You have " + Convert.ToString(4 - unauthClient.FailedAttempts) + " more attempts before you're banned from the server.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)", Color.Red);
CompressOutgoingMessage(reject);
server.SendMessage(reject, unauthClient.Connection, NetDeliveryMethod.Unreliable);
unauthClient.AuthTimer = 10.0f;
return;
}
}
}
string clVersion = inc.ReadString();
UInt16 contentPackageCount = inc.ReadUInt16();
List <string> contentPackageNames = new List <string>();
List <string> contentPackageHashes = new List <string>();
for (int i = 0; i < contentPackageCount; i++)
{
string packageName = inc.ReadString();
string packageHash = inc.ReadString();
contentPackageNames.Add(packageName);
contentPackageHashes.Add(packageHash);
if (contentPackageCount == 0)
{
DebugConsole.Log("Client is using content package " +
(packageName ?? "null") + " (" + (packageHash ?? "null" + ")"));
}
}
if (contentPackageCount == 0)
{
DebugConsole.Log("Client did not list any content packages.");
}
string clName = Client.SanitizeName(inc.ReadString());
if (string.IsNullOrWhiteSpace(clName))
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.NoName, "");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)", Color.Red);
return;
}
if (clVersion != GameMain.Version.ToString())
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.InvalidVersion,
$"DisconnectMessage.InvalidVersion~[version]={GameMain.Version.ToString()}~[clientversion]={clVersion}");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version)", Color.Red);
return;
}
//check if the client is missing any of the content packages the server requires
List <ContentPackage> missingPackages = new List <ContentPackage>();
foreach (ContentPackage contentPackage in GameMain.SelectedPackages)
{
if (!contentPackage.HasMultiplayerIncompatibleContent)
{
continue;
}
bool packageFound = false;
for (int i = 0; i < contentPackageCount; i++)
{
if (contentPackageNames[i] == contentPackage.Name && contentPackageHashes[i] == contentPackage.MD5hash.Hash)
{
packageFound = true;
break;
}
}
if (!packageFound)
{
missingPackages.Add(contentPackage);
}
}
if (missingPackages.Count == 1)
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.MissingContentPackage, $"DisconnectMessage.MissingContentPackage~[missingcontentpackage]={GetPackageStr(missingPackages[0])}");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (missing content package " + GetPackageStr(missingPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
else if (missingPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
missingPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.MissingContentPackage, $"DisconnectMessage.MissingContentPackages~[missingcontentpackages]={string.Join(", ", packageStrs)}");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (missing content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
string GetPackageStr(ContentPackage contentPackage)
{
return("\"" + contentPackage.Name + "\" (hash " + contentPackage.MD5hash.ShortHash + ")");
}
//check if the client is using any contentpackages that are not compatible with the server
List <Pair <string, string> > incompatiblePackages = new List <Pair <string, string> >();
for (int i = 0; i < contentPackageNames.Count; i++)
{
if (!GameMain.Config.SelectedContentPackages.Any(cp => cp.Name == contentPackageNames[i] && cp.MD5hash.Hash == contentPackageHashes[i]))
{
incompatiblePackages.Add(new Pair <string, string>(contentPackageNames[i], contentPackageHashes[i]));
}
}
if (incompatiblePackages.Count == 1)
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackage~[incompatiblecontentpackage]={GetPackageStr2(incompatiblePackages[0])}");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible content package " + GetPackageStr2(incompatiblePackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
else if (incompatiblePackages.Count > 1)
{
List <string> packageStrs = new List <string>();
incompatiblePackages.ForEach(cp => packageStrs.Add(GetPackageStr2(cp)));
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackages~[incompatiblecontentpackages]={string.Join(", ", packageStrs)}");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
string GetPackageStr2(Pair <string, string> nameAndHash)
{
return("\"" + nameAndHash.First + "\" (hash " + Md5Hash.GetShortHash(nameAndHash.Second) + ")");
}
if (!serverSettings.Whitelist.IsWhiteListed(clName, inc.SenderConnection.RemoteEndPoint.Address))
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.NotOnWhitelist, "");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)", Color.Red);
return;
}
if (!Client.IsValidName(clName, this))
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.InvalidName, "");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)", Color.Red);
return;
}
if (inc.SenderConnection != OwnerConnection && Homoglyphs.Compare(clName.ToLower(), Name.ToLower()))
{
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.NameTaken, "");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)", Color.Red);
return;
}
Client nameTaken = ConnectedClients.Find(c => Homoglyphs.Compare(c.Name.ToLower(), clName.ToLower()));
if (nameTaken != null)
{
if (nameTaken.Connection.RemoteEndPoint.Address.ToString() == inc.SenderEndPoint.Address.ToString())
{
//both name and IP address match, replace this player's connection
nameTaken.Connection.Disconnect(DisconnectReason.SessionTaken.ToString());
nameTaken.Connection = unauthClient.Connection;
nameTaken.InitClientSync(); //reinitialize sync ids because this is a new connection
unauthenticatedClients.Remove(unauthClient);
unauthClient = null;
return;
}
else
{
//can't authorize this client
DisconnectUnauthClient(inc, unauthClient, DisconnectReason.NameTaken, "");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)", Color.Red);
return;
}
}
//new client
Client newClient = new Client(clName, GetNewClientID());
newClient.InitClientSync();
newClient.Connection = unauthClient.Connection;
newClient.SteamID = unauthClient.SteamID;
unauthenticatedClients.Remove(unauthClient);
unauthClient = null;
ConnectedClients.Add(newClient);
LastClientListUpdateID++;
if (newClient.Connection == OwnerConnection)
{
newClient.GivePermission(ClientPermissions.All);
newClient.PermittedConsoleCommands.AddRange(DebugConsole.Commands);
GameMain.Server.UpdateClientPermissions(newClient);
GameMain.Server.SendConsoleMessage("Granted all permissions to " + newClient.Name + ".", newClient);
}
GameMain.Server.SendChatMessage($"ServerMessage.JoinedServer~[client]={clName}", ChatMessageType.Server, null);
var savedPermissions = serverSettings.ClientPermissions.Find(cp =>
cp.SteamID > 0 ?
cp.SteamID == newClient.SteamID :
newClient.IPMatches(cp.IP));
if (savedPermissions != null)
{
newClient.SetPermissions(savedPermissions.Permissions, savedPermissions.PermittedCommands);
}
else
{
newClient.SetPermissions(ClientPermissions.None, new List <DebugConsole.Command>());
}
}
private void ClientInitRequest(NetIncomingMessage inc)
{
if (ConnectedClients.Find(c => c.Connection == inc.SenderConnection) != null)
{
//this client was already authenticated
//another init request means they didn't get any update packets yet
return;
}
UnauthenticatedClient unauthClient = unauthenticatedClients.Find(uc => uc.Connection == inc.SenderConnection);
if (unauthClient == null)
{
//client did not ask for nonce first, can't authorize
inc.SenderConnection.Disconnect("Client did not properly request authentication.");
return;
}
if (!string.IsNullOrEmpty(password))
{
//decrypt message and compare password
string saltedPw = password;
saltedPw = saltedPw + Convert.ToString(unauthClient.Nonce);
saltedPw = Encoding.UTF8.GetString(NetUtility.ComputeSHAHash(Encoding.UTF8.GetBytes(saltedPw)));
string clPw = inc.ReadString();
if (clPw != saltedPw)
{
unauthClient.failedAttempts++;
if (unauthClient.failedAttempts > 3)
{
//disconnect and ban after too many failed attempts
banList.BanPlayer("Unnamed", unauthClient.Connection.RemoteEndPoint.Address.ToString());
DisconnectUnauthClient(inc, unauthClient, "Too many failed login attempts. You have been automatically banned from the server.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " has been banned from the server (too many wrong passwords)", Color.Red);
return;
}
else
{
//not disconnecting the player here, because they'll still use the same connection and nonce if they try logging in again
NetOutgoingMessage reject = server.CreateMessage();
reject.Write((byte)ServerPacketHeader.AUTH_FAILURE);
reject.Write("Wrong password! You have " + Convert.ToString(4 - unauthClient.failedAttempts) + " more attempts before you're banned from the server.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " failed to join the server (incorrect password)", Color.Red);
server.SendMessage(reject, unauthClient.Connection, NetDeliveryMethod.Unreliable);
unauthClient.AuthTimer = 10.0f;
return;
}
}
}
string clVersion = inc.ReadString();
string clPackageName = inc.ReadString();
string clPackageHash = inc.ReadString();
string clName = Client.SanitizeName(inc.ReadString());
if (string.IsNullOrWhiteSpace(clName))
{
DisconnectUnauthClient(inc, unauthClient, "You need a name.");
Log(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(inc.SenderConnection.RemoteEndPoint.Address.ToString() + " couldn't join the server (no name given)", Color.Red);
return;
}
if (clVersion != GameMain.Version.ToString())
{
DisconnectUnauthClient(inc, unauthClient, "Version " + GameMain.Version + " required to connect to the server (Your version: " + clVersion + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong game version)", Color.Red);
return;
}
if (clPackageName != GameMain.SelectedPackage.Name)
{
DisconnectUnauthClient(inc, unauthClient, "Your content package (" + clPackageName + ") doesn't match the server's version (" + GameMain.SelectedPackage.Name + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package name)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package name)", Color.Red);
return;
}
if (clPackageHash != GameMain.SelectedPackage.MD5hash.Hash)
{
DisconnectUnauthClient(inc, unauthClient, "Your content package (MD5: " + clPackageHash + ") doesn't match the server's version (MD5: " + GameMain.SelectedPackage.MD5hash.Hash + ")");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (wrong content package hash)", Color.Red);
return;
}
if (!whitelist.IsWhiteListed(clName, inc.SenderConnection.RemoteEndPoint.Address.ToString()))
{
DisconnectUnauthClient(inc, unauthClient, "You're not in this server's whitelist.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (not in whitelist)", Color.Red);
return;
}
if (!Client.IsValidName(clName))
{
DisconnectUnauthClient(inc, unauthClient, "Your name contains illegal symbols.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (invalid name)", Color.Red);
return;
}
if (clName.ToLower() == Name.ToLower())
{
DisconnectUnauthClient(inc, unauthClient, "That name is taken.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name taken by the server)", Color.Red);
return;
}
Client nameTaken = ConnectedClients.Find(c => c.name.ToLower() == clName.ToLower());
if (nameTaken != null)
{
if (nameTaken.Connection.RemoteEndPoint.Address.ToString() == inc.SenderEndPoint.Address.ToString())
{
//both name and IP address match, replace this player's connection
nameTaken.Connection.Disconnect("Your session was taken by a new connection on the same IP address.");
nameTaken.Connection = unauthClient.Connection;
nameTaken.InitClientSync(); //reinitialize sync ids because this is a new connection
unauthenticatedClients.Remove(unauthClient);
unauthClient = null;
return;
}
else
{
//can't authorize this client
DisconnectUnauthClient(inc, unauthClient, "That name is taken.");
Log(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (name already taken)", Color.Red);
return;
}
}
//new client
Client newClient = new Client(clName, GetNewClientID());
newClient.InitClientSync();
newClient.Connection = unauthClient.Connection;
unauthenticatedClients.Remove(unauthClient);
unauthClient = null;
ConnectedClients.Add(newClient);
GameMain.NetLobbyScreen.AddPlayer(newClient.name);
GameMain.Server.SendChatMessage(clName + " has joined the server.", ChatMessageType.Server, null);
var savedPermissions = clientPermissions.Find(cp => cp.IP == newClient.Connection.RemoteEndPoint.Address.ToString());
if (savedPermissions != null)
{
newClient.SetPermissions(savedPermissions.Permissions);
}
else
{
newClient.SetPermissions(ClientPermissions.None);
}
}
private void ReadConnectionInitializationStep(PendingClient pendingClient, NetIncomingMessage inc)
{
if (netServer == null)
{
return;
}
pendingClient.TimeOut = NetworkConnection.TimeoutThreshold;
ConnectionInitialization initializationStep = (ConnectionInitialization)inc.ReadByte();
//DebugConsole.NewMessage(initializationStep+" "+pendingClient.InitializationStep);
if (pendingClient.InitializationStep != initializationStep)
{
return;
}
pendingClient.UpdateTime = Timing.TotalTime + Timing.Step;
switch (initializationStep)
{
case ConnectionInitialization.SteamTicketAndVersion:
string name = Client.SanitizeName(inc.ReadString());
int ownKey = inc.ReadInt32();
UInt64 steamId = inc.ReadUInt64();
UInt16 ticketLength = inc.ReadUInt16();
byte[] ticket = inc.ReadBytes(ticketLength);
if (!Client.IsValidName(name, serverSettings))
{
if (OwnerConnection != null ||
!IPAddress.IsLoopback(pendingClient.Connection.RemoteEndPoint.Address.MapToIPv4NoThrow()) &&
ownerKey == null || ownKey == 0 && ownKey != ownerKey)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidName, "The name \"" + name + "\" is invalid");
return;
}
}
string version = inc.ReadString();
bool isCompatibleVersion = NetworkMember.IsCompatible(version, GameMain.Version.ToString()) ?? false;
if (!isCompatibleVersion)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidVersion,
$"DisconnectMessage.InvalidVersion~[version]={GameMain.Version.ToString()}~[clientversion]={version}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(name + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible game version)", Microsoft.Xna.Framework.Color.Red);
return;
}
int contentPackageCount = inc.ReadVariableInt32();
List <ClientContentPackage> clientContentPackages = new List <ClientContentPackage>();
for (int i = 0; i < contentPackageCount; i++)
{
string packageName = inc.ReadString();
string packageHash = inc.ReadString();
clientContentPackages.Add(new ClientContentPackage(packageName, packageHash));
}
//check if the client is missing any of our packages
List <ContentPackage> missingPackages = new List <ContentPackage>();
foreach (ContentPackage serverContentPackage in GameMain.SelectedPackages)
{
if (!serverContentPackage.HasMultiplayerIncompatibleContent)
{
continue;
}
bool packageFound = clientContentPackages.Any(cp => cp.Name == serverContentPackage.Name && cp.Hash == serverContentPackage.MD5hash.Hash);
if (!packageFound)
{
missingPackages.Add(serverContentPackage);
}
}
//check if the client is using packages we don't have
List <ClientContentPackage> redundantPackages = new List <ClientContentPackage>();
foreach (ClientContentPackage clientContentPackage in clientContentPackages)
{
bool packageFound = GameMain.SelectedPackages.Any(cp => cp.Name == clientContentPackage.Name && cp.MD5hash.Hash == clientContentPackage.Hash);
if (!packageFound)
{
redundantPackages.Add(clientContentPackage);
}
}
if (missingPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackage~[missingcontentpackage]={GetPackageStr(missingPackages[0])}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (missing content package " + GetPackageStr(missingPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
else if (missingPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
missingPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackages~[missingcontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (missing content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackage~[incompatiblecontentpackage]={GetPackageStr(redundantPackages[0])}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (using an incompatible content package " + GetPackageStr(redundantPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
redundantPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackages~[incompatiblecontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (using incompatible content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (pendingClient.SteamID == null)
{
bool requireSteamAuth = GameMain.Config.RequireSteamAuthentication;
#if DEBUG
requireSteamAuth = false;
#endif
//steam auth cannot be done (SteamManager not initialized or no ticket given),
//but it's not required either -> let the client join without auth
if ((!Steam.SteamManager.IsInitialized || (ticket?.Length ?? 0) == 0) &&
!requireSteamAuth)
{
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.InitializationStep = serverSettings.HasPassword ? ConnectionInitialization.Password : ConnectionInitialization.ContentPackageOrder;
}
else
{
Steamworks.BeginAuthResult authSessionStartState = Steam.SteamManager.StartAuthSession(ticket, steamId);
if (authSessionStartState != Steamworks.BeginAuthResult.OK)
{
RemovePendingClient(pendingClient, DisconnectReason.SteamAuthenticationFailed, "Steam auth session failed to start: " + authSessionStartState.ToString());
return;
}
pendingClient.SteamID = steamId;
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.AuthSessionStarted = true;
}
}
else //TODO: could remove since this seems impossible
{
if (pendingClient.SteamID != steamId)
{
RemovePendingClient(pendingClient, DisconnectReason.SteamAuthenticationFailed, "SteamID mismatch");
return;
}
}
break;
case ConnectionInitialization.Password:
int pwLength = inc.ReadByte();
byte[] incPassword = new byte[pwLength];
inc.ReadBytes(incPassword, 0, pwLength);
if (pendingClient.PasswordSalt == null)
{
DebugConsole.ThrowError("Received password message from client without salt");
return;
}
if (serverSettings.IsPasswordCorrect(incPassword, pendingClient.PasswordSalt.Value))
{
pendingClient.InitializationStep = ConnectionInitialization.ContentPackageOrder;
}
else
{
pendingClient.Retries++;
if (serverSettings.BanAfterWrongPassword && pendingClient.Retries > serverSettings.MaxPasswordRetriesBeforeBan)
{
string banMsg = "Failed to enter correct password too many times";
if (pendingClient.SteamID != null)
{
serverSettings.BanList.BanPlayer(pendingClient.Name, pendingClient.SteamID.Value, banMsg, null);
}
serverSettings.BanList.BanPlayer(pendingClient.Name, pendingClient.Connection.RemoteEndPoint.Address, banMsg, null);
RemovePendingClient(pendingClient, DisconnectReason.Banned, banMsg);
return;
}
}
pendingClient.UpdateTime = Timing.TotalTime;
break;
case ConnectionInitialization.ContentPackageOrder:
pendingClient.InitializationStep = ConnectionInitialization.Success;
pendingClient.UpdateTime = Timing.TotalTime;
break;
}
}
protected void ReadConnectionInitializationStep(PendingClient pendingClient, IReadMessage inc)
{
pendingClient.TimeOut = NetworkConnection.TimeoutThreshold;
ConnectionInitialization initializationStep = (ConnectionInitialization)inc.ReadByte();
if (pendingClient.InitializationStep != initializationStep)
{
return;
}
pendingClient.UpdateTime = Timing.TotalTime + Timing.Step;
switch (initializationStep)
{
case ConnectionInitialization.SteamTicketAndVersion:
string name = Client.SanitizeName(inc.ReadString());
int ownerKey = inc.ReadInt32();
UInt64 steamId = inc.ReadUInt64();
UInt16 ticketLength = inc.ReadUInt16();
byte[] ticketBytes = inc.ReadBytes(ticketLength);
if (!Client.IsValidName(name, serverSettings))
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidName, "");
return;
}
string version = inc.ReadString();
bool isCompatibleVersion = NetworkMember.IsCompatible(version, GameMain.Version.ToString()) ?? false;
if (!isCompatibleVersion)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidVersion,
$"DisconnectMessage.InvalidVersion~[version]={GameMain.Version}~[clientversion]={version}");
GameServer.Log(name + " (" + pendingClient.SteamID.ToString() + ") couldn't join the server (incompatible game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(name + " (" + pendingClient.SteamID.ToString() + ") couldn't join the server (incompatible game version)", Microsoft.Xna.Framework.Color.Red);
return;
}
string language = inc.ReadString();
pendingClient.Connection.Language = language;
Client nameTaken = GameMain.Server.ConnectedClients.Find(c => Homoglyphs.Compare(c.Name.ToLower(), name.ToLower()));
if (nameTaken != null)
{
RemovePendingClient(pendingClient, DisconnectReason.NameTaken, "");
GameServer.Log(name + " (" + pendingClient.SteamID.ToString() + ") couldn't join the server (name too similar to the name of the client \"" + nameTaken.Name + "\").", ServerLog.MessageType.Error);
return;
}
if (!pendingClient.AuthSessionStarted)
{
ProcessAuthTicket(name, ownerKey, steamId, pendingClient, ticketBytes);
}
break;
case ConnectionInitialization.Password:
int pwLength = inc.ReadByte();
byte[] incPassword = inc.ReadBytes(pwLength);
if (pendingClient.PasswordSalt == null)
{
DebugConsole.ThrowError("Received password message from client without salt");
return;
}
if (serverSettings.IsPasswordCorrect(incPassword, pendingClient.PasswordSalt.Value))
{
pendingClient.InitializationStep = ConnectionInitialization.ContentPackageOrder;
}
else
{
pendingClient.Retries++;
if (serverSettings.BanAfterWrongPassword && pendingClient.Retries > serverSettings.MaxPasswordRetriesBeforeBan)
{
string banMsg = "Failed to enter correct password too many times";
BanPendingClient(pendingClient, banMsg, null);
RemovePendingClient(pendingClient, DisconnectReason.Banned, banMsg);
return;
}
}
pendingClient.UpdateTime = Timing.TotalTime;
break;
case ConnectionInitialization.ContentPackageOrder:
pendingClient.InitializationStep = ConnectionInitialization.Success;
pendingClient.UpdateTime = Timing.TotalTime;
break;
}
}