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(), "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); 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); #if CLIENT GameMain.NetLobbyScreen.AddPlayer(newClient.Name); #endif 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); } }
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; } }
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 //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; } }
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; } bool?isCompatibleVersion = IsCompatible(clVersion, GameMain.Version.ToString()); if (isCompatibleVersion.HasValue && !isCompatibleVersion.Value) { 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 (incompatible game version)", ServerLog.MessageType.Error); DebugConsole.NewMessage(clName + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible 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 (inc.SenderConnection != OwnerConnection && !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); var previousPlayer = previousPlayers.Find(p => p.MatchesClient(newClient)); if (previousPlayer != null) { newClient.Karma = previousPlayer.Karma; foreach (Client c in previousPlayer.KickVoters) { if (!connectedClients.Contains(c)) { continue; } newClient.AddKickVote(c); } } 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); serverSettings.ServerDetailsChanged = true; if (previousPlayer != null && previousPlayer.Name != newClient.Name) { GameMain.Server.SendChatMessage($"ServerMessage.PreviousClientName~[client]={clName}~[previousname]={previousPlayer.Name}", ChatMessageType.Server, null); previousPlayer.Name = newClient.Name; } 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 { var defaultPerms = PermissionPreset.List.Find(p => p.Name == "None"); if (defaultPerms != null) { newClient.SetPermissions(defaultPerms.Permissions, defaultPerms.PermittedCommands); } else { newClient.SetPermissions(ClientPermissions.None, new List <DebugConsole.Command>()); } } }