698 lines
30 KiB
C#
698 lines
30 KiB
C#
using System;
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using System.Linq;
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using System.Collections.Generic;
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using System.Threading;
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using System.Reflection;
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using System.IO;
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using Lidgren.Network;
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namespace CoopServer
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{
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class Server
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{
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public static readonly string CurrentModVersion = "V0_7_0";
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public static readonly Settings MainSettings = Util.Read<Settings>("CoopSettings.xml");
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private readonly Blocklist MainBlocklist = Util.Read<Blocklist>("Blocklist.xml");
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private readonly Allowlist MainAllowlist = Util.Read<Allowlist>("Allowlist.xml");
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public static NetServer MainNetServer;
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public static ServerScript GameMode;
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public static Dictionary<Command, Action<CommandContext>> Commands;
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public static readonly List<Client> Clients = new();
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public Server()
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{
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// 6d4ec318f1c43bd62fe13d5a7ab28650 = GTACOOP:R
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NetPeerConfiguration config = new("6d4ec318f1c43bd62fe13d5a7ab28650")
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{
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MaximumConnections = MainSettings.MaxPlayers,
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Port = MainSettings.ServerPort,
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EnableUPnP = MainSettings.UPnP
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};
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config.EnableMessageType(NetIncomingMessageType.ConnectionApproval);
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config.EnableMessageType(NetIncomingMessageType.ConnectionLatencyUpdated);
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MainNetServer = new NetServer(config);
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MainNetServer.Start();
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Logging.Info(string.Format("Server listening on {0}:{1}", config.LocalAddress.ToString(), config.Port));
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if (MainSettings.UPnP)
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{
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Logging.Info(string.Format("Attempting to forward port {0}", MainSettings.ServerPort));
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if (MainNetServer.UPnP.ForwardPort(MainSettings.ServerPort, "GTACOOP:R server"))
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{
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Logging.Info(string.Format("Server available on {0}:{1}", MainNetServer.UPnP.GetExternalIP().ToString(), config.Port));
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}
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else
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{
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Logging.Error("Port forwarding failed!");
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Logging.Warning("If you and your friends can join this server, please ignore this error or set UPnP in CoopSettings.xml to \"false\"!");
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}
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}
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if (!string.IsNullOrEmpty(MainSettings.GameMode))
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{
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try
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{
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Logging.Info("Loading gamemode...");
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Assembly asm = Assembly.LoadFrom(AppDomain.CurrentDomain.BaseDirectory + "gamemodes" + Path.DirectorySeparatorChar + MainSettings.GameMode + ".dll");
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Type[] types = asm.GetExportedTypes();
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IEnumerable<Type> validTypes = types.Where(t => !t.IsInterface && !t.IsAbstract).Where(t => typeof(ServerScript).IsAssignableFrom(t));
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Type[] enumerable = validTypes as Type[] ?? validTypes.ToArray();
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if (!enumerable.Any())
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{
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Logging.Error("ERROR: No classes that inherit from ServerScript have been found in the assembly. Starting freeroam.");
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}
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else
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{
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Commands = new();
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GameMode = Activator.CreateInstance(enumerable.ToArray()[0]) as ServerScript;
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if (GameMode == null)
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{
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Logging.Warning("Could not create gamemode: it is null.");
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}
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else
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{
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GameMode.API.InvokeStart();
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}
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}
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}
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catch (Exception e)
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{
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Logging.Error(e.Message);
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}
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}
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Listen();
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}
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private void Listen()
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{
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Logging.Info("Listening for clients");
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while (true)
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{
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// 16 milliseconds to sleep to reduce CPU usage
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Thread.Sleep(1000 / 60);
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NetIncomingMessage message;
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while ((message = MainNetServer.ReadMessage()) != null)
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{
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switch (message.MessageType)
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{
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case NetIncomingMessageType.ConnectionApproval:
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Logging.Info("New incoming connection from: " + message.SenderConnection.RemoteEndPoint.ToString());
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if (message.ReadByte() != (byte)PacketTypes.HandshakePacket)
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{
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Logging.Info(string.Format("Player with IP {0} blocked, reason: Wrong packet!", message.SenderConnection.RemoteEndPoint.Address.ToString()));
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message.SenderConnection.Deny("Wrong packet!");
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}
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else
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{
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try
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{
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Packet approvalPacket;
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approvalPacket = new HandshakePacket();
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approvalPacket.NetIncomingMessageToPacket(message);
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GetHandshake(message.SenderConnection, (HandshakePacket)approvalPacket);
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}
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catch (Exception e)
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{
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Logging.Info(string.Format("Player with IP {0} blocked, reason: {1}", message.SenderConnection.RemoteEndPoint.Address.ToString(), e.Message));
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message.SenderConnection.Deny(e.Message);
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}
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}
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break;
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case NetIncomingMessageType.StatusChanged:
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NetConnectionStatus status = (NetConnectionStatus)message.ReadByte();
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long clientID = message.SenderConnection.RemoteUniqueIdentifier;
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if (status == NetConnectionStatus.Disconnected && Clients.Any(x => x.ID == clientID))
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{
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SendPlayerDisconnectPacket(new PlayerDisconnectPacket() { ID = clientID });
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}
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break;
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case NetIncomingMessageType.Data:
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// Get packet type
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byte type = message.ReadByte();
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// Create packet
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Packet packet;
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switch (type)
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{
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case (byte)PacketTypes.PlayerConnectPacket:
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try
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{
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packet = new PlayerConnectPacket();
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packet.NetIncomingMessageToPacket(message);
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SendPlayerConnectPacket(message.SenderConnection, (PlayerConnectPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.PlayerDisconnectPacket:
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try
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{
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packet = new PlayerDisconnectPacket();
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packet.NetIncomingMessageToPacket(message);
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SendPlayerDisconnectPacket((PlayerDisconnectPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.FullSyncPlayerPacket:
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try
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{
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packet = new FullSyncPlayerPacket();
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packet.NetIncomingMessageToPacket(message);
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FullSyncPlayer((FullSyncPlayerPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.FullSyncPlayerVehPacket:
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try
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{
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packet = new FullSyncPlayerVehPacket();
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packet.NetIncomingMessageToPacket(message);
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FullSyncPlayerVeh((FullSyncPlayerVehPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.LightSyncPlayerPacket:
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try
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{
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packet = new LightSyncPlayerPacket();
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packet.NetIncomingMessageToPacket(message);
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LightSyncPlayer((LightSyncPlayerPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.LightSyncPlayerVehPacket:
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try
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{
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packet = new LightSyncPlayerVehPacket();
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packet.NetIncomingMessageToPacket(message);
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LightSyncPlayerVeh((LightSyncPlayerVehPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.ChatMessagePacket:
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try
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{
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packet = new ChatMessagePacket();
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packet.NetIncomingMessageToPacket(message);
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SendChatMessage((ChatMessagePacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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break;
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case (byte)PacketTypes.FullSyncNpcPacket:
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if (MainSettings.NpcsAllowed)
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{
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try
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{
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packet = new FullSyncNpcPacket();
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packet.NetIncomingMessageToPacket(message);
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FullSyncNpc(message.SenderConnection, (FullSyncNpcPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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}
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else
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{
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message.SenderConnection.Disconnect("Npcs are not allowed!");
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}
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break;
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case (byte)PacketTypes.FullSyncNpcVehPacket:
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if (MainSettings.NpcsAllowed)
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{
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try
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{
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packet = new FullSyncNpcVehPacket();
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packet.NetIncomingMessageToPacket(message);
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FullSyncNpcVeh(message.SenderConnection, (FullSyncNpcVehPacket)packet);
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}
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catch (Exception e)
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{
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message.SenderConnection.Disconnect(e.Message);
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}
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}
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else
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{
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message.SenderConnection.Disconnect("Npcs are not allowed!");
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}
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break;
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default:
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Logging.Error("Unhandled Data / Packet type");
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break;
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}
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break;
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case NetIncomingMessageType.ConnectionLatencyUpdated:
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Client client = Clients.FirstOrDefault(x => x.ID == message.SenderConnection.RemoteUniqueIdentifier);
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if (client != default)
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{
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client.Latency = message.ReadFloat();
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}
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break;
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case NetIncomingMessageType.ErrorMessage:
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Logging.Error(message.ReadString());
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break;
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case NetIncomingMessageType.WarningMessage:
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Logging.Warning(message.ReadString());
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break;
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case NetIncomingMessageType.DebugMessage:
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case NetIncomingMessageType.VerboseDebugMessage:
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Logging.Debug(message.ReadString());
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break;
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default:
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Logging.Error(string.Format("Unhandled type: {0} {1} bytes {2} | {3}", message.MessageType, message.LengthBytes, message.DeliveryMethod, message.SequenceChannel));
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break;
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}
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MainNetServer.Recycle(message);
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}
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}
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}
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#region -- PLAYER --
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// Before we approve the connection, we must shake hands
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private void GetHandshake(NetConnection local, HandshakePacket packet)
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{
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Logging.Debug("New handshake from: [SC: " + packet.SocialClubName + " | Name: " + packet.Username + " | Address: " + local.RemoteEndPoint.Address.ToString() + "]");
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if (string.IsNullOrWhiteSpace(packet.Username))
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{
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local.Deny("Username is empty or contains spaces!");
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return;
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}
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else if (packet.Username.Any(p => !char.IsLetterOrDigit(p)))
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{
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local.Deny("Username contains special chars!");
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return;
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}
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if (MainSettings.Allowlist)
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{
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if (!MainAllowlist.SocialClubName.Contains(packet.SocialClubName))
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{
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local.Deny("This Social Club name is not on the allow list!");
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return;
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}
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}
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if (packet.ModVersion != CurrentModVersion)
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{
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local.Deny("Please update GTACoop:R to " + CurrentModVersion.Replace("_", "."));
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return;
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}
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if (MainBlocklist.SocialClubName.Contains(packet.SocialClubName))
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{
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local.Deny("This Social Club name has been blocked by this server!");
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return;
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}
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else if (MainBlocklist.Username.Contains(packet.Username))
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{
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local.Deny("This Username has been blocked by this server!");
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return;
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}
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else if (MainBlocklist.IP.Contains(local.RemoteEndPoint.ToString().Split(":")[0]))
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{
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local.Deny("This IP was blocked by this server!");
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return;
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}
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if (Clients.Any(x => x.Player.SocialClubName == packet.SocialClubName))
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{
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local.Deny("The name of the Social Club is already taken!");
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return;
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}
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else if (Clients.Any(x => x.Player.Username == packet.Username))
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{
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local.Deny("Username is already taken!");
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return;
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}
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long localID = local.RemoteUniqueIdentifier;
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// Add the player to Players
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Clients.Add(
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new Client()
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{
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ID = localID,
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Player = new()
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{
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SocialClubName = packet.SocialClubName,
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Username = packet.Username
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}
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}
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);
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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// Create a new handshake packet
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new HandshakePacket()
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{
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ID = localID,
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SocialClubName = string.Empty,
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Username = string.Empty,
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ModVersion = string.Empty,
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NpcsAllowed = MainSettings.NpcsAllowed
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}.PacketToNetOutGoingMessage(outgoingMessage);
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// Accept the connection and send back a new handshake packet with the connection ID
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local.Approve(outgoingMessage);
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}
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// The connection has been approved, now we need to send all other players to the new player and the new player to all players
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private static void SendPlayerConnectPacket(NetConnection local, PlayerConnectPacket packet)
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{
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if (!string.IsNullOrEmpty(MainSettings.WelcomeMessage))
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{
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SendChatMessage(new ChatMessagePacket() { Username = "Server", Message = MainSettings.WelcomeMessage }, new List<NetConnection>() { local });
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}
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if (GameMode != null)
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{
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GameMode.API.InvokePlayerConnected(Clients.Find(x => x.ID == packet.ID));
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}
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List<NetConnection> clients;
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if ((clients = Util.FilterAllLocal(local)).Count == 0)
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{
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return;
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}
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// Send all players to local
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clients.ForEach(targetPlayer =>
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{
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long targetPlayerID = targetPlayer.RemoteUniqueIdentifier;
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Client targetEntity = Clients.First(x => x.ID == targetPlayerID);
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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new PlayerConnectPacket()
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{
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ID = targetPlayerID,
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SocialClubName = targetEntity.Player.SocialClubName,
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Username = targetEntity.Player.Username
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}.PacketToNetOutGoingMessage(outgoingMessage);
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MainNetServer.SendMessage(outgoingMessage, local, NetDeliveryMethod.ReliableOrdered, 0);
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});
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// Send local to all players
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Client localClient = Clients.First(x => x.ID == packet.ID);
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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new PlayerConnectPacket()
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{
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ID = packet.ID,
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SocialClubName = localClient.Player.SocialClubName,
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Username = localClient.Player.Username
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}.PacketToNetOutGoingMessage(outgoingMessage);
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MainNetServer.SendMessage(outgoingMessage, clients, NetDeliveryMethod.ReliableOrdered, 0);
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}
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// Send all players a message that someone has left the server
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private static void SendPlayerDisconnectPacket(PlayerDisconnectPacket packet)
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{
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if (GameMode != null)
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{
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GameMode.API.InvokePlayerDisconnected(Clients.Find(x => x.ID == packet.ID));
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}
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List<NetConnection> clients;
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if ((clients = Util.FilterAllLocal(packet.ID)).Count > 0)
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{
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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packet.PacketToNetOutGoingMessage(outgoingMessage);
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MainNetServer.SendMessage(outgoingMessage, clients, NetDeliveryMethod.ReliableOrdered, 0);
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}
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Clients.Remove(Clients.Find(x => x.ID == packet.ID));
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}
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private static void FullSyncPlayer(FullSyncPlayerPacket packet)
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{
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Client client = Clients.First(x => x.ID == packet.Extra.ID);
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client.Player.Position = packet.Extra.Position;
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PlayerPacket playerPacket = packet.Extra;
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playerPacket.Latency = client.Latency;
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packet.Extra = playerPacket;
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MainNetServer.Connections.FindAll(x => x.RemoteUniqueIdentifier != packet.Extra.ID).ForEach(x =>
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{
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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if (Clients.First(y => y.ID == x.RemoteUniqueIdentifier).Player.IsInRangeOf(packet.Extra.Position, 550f))
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{
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packet.PacketToNetOutGoingMessage(outgoingMessage);
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}
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else
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{
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new SuperLightSyncPlayerPacket()
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{
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Extra = packet.Extra
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}.PacketToNetOutGoingMessage(outgoingMessage);
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}
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MainNetServer.SendMessage(outgoingMessage, x, NetDeliveryMethod.UnreliableSequenced, 0);
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});
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}
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private static void FullSyncPlayerVeh(FullSyncPlayerVehPacket packet)
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{
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Client client = Clients.First(x => x.ID == packet.Extra.ID);
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client.Player.Position = packet.Extra.Position;
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PlayerPacket playerPacket = packet.Extra;
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playerPacket.Latency = client.Latency;
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packet.Extra = playerPacket;
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MainNetServer.Connections.FindAll(x => x.RemoteUniqueIdentifier != packet.Extra.ID).ForEach(x =>
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{
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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if (Clients.First(y => y.ID == x.RemoteUniqueIdentifier).Player.IsInRangeOf(packet.Extra.Position, 550f))
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{
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packet.PacketToNetOutGoingMessage(outgoingMessage);
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}
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else
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{
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new SuperLightSyncPlayerPacket()
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{
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Extra = packet.Extra
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}.PacketToNetOutGoingMessage(outgoingMessage);
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}
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MainNetServer.SendMessage(outgoingMessage, x, NetDeliveryMethod.UnreliableSequenced, 0);
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});
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}
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private static void LightSyncPlayer(LightSyncPlayerPacket packet)
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{
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Client client = Clients.First(x => x.ID == packet.Extra.ID);
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client.Player.Position = packet.Extra.Position;
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PlayerPacket playerPacket = packet.Extra;
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playerPacket.Latency = client.Latency;
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packet.Extra = playerPacket;
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MainNetServer.Connections.FindAll(x => x.RemoteUniqueIdentifier != packet.Extra.ID).ForEach(x =>
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{
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NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
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if (Clients.First(y => y.ID == x.RemoteUniqueIdentifier).Player.IsInRangeOf(packet.Extra.Position, 550f))
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{
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packet.PacketToNetOutGoingMessage(outgoingMessage);
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}
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else
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{
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new SuperLightSyncPlayerPacket()
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{
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Extra = packet.Extra
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}.PacketToNetOutGoingMessage(outgoingMessage);
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}
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MainNetServer.SendMessage(outgoingMessage, x, NetDeliveryMethod.UnreliableSequenced, 0);
|
|
});
|
|
}
|
|
|
|
private static void LightSyncPlayerVeh(LightSyncPlayerVehPacket packet)
|
|
{
|
|
Client client = Clients.First(x => x.ID == packet.Extra.ID);
|
|
client.Player.Position = packet.Extra.Position;
|
|
|
|
PlayerPacket playerPacket = packet.Extra;
|
|
playerPacket.Latency = client.Latency;
|
|
|
|
packet.Extra = playerPacket;
|
|
|
|
MainNetServer.Connections.FindAll(x => x.RemoteUniqueIdentifier != packet.Extra.ID).ForEach(x =>
|
|
{
|
|
NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
|
|
|
|
if (Clients.First(y => y.ID == x.RemoteUniqueIdentifier).Player.IsInRangeOf(packet.Extra.Position, 550f))
|
|
{
|
|
packet.PacketToNetOutGoingMessage(outgoingMessage);
|
|
}
|
|
else
|
|
{
|
|
new SuperLightSyncPlayerPacket()
|
|
{
|
|
Extra = packet.Extra
|
|
}.PacketToNetOutGoingMessage(outgoingMessage);
|
|
}
|
|
|
|
MainNetServer.SendMessage(outgoingMessage, x, NetDeliveryMethod.UnreliableSequenced, 0);
|
|
});
|
|
}
|
|
|
|
// Send a message to targets or all players
|
|
private static void SendChatMessage(ChatMessagePacket packet, List<NetConnection> targets = null)
|
|
{
|
|
NetOutgoingMessage outgoingMessage;
|
|
|
|
if (GameMode != null)
|
|
{
|
|
if (packet.Message.StartsWith("/"))
|
|
{
|
|
string[] cmdArgs = packet.Message.Split(" ");
|
|
string cmdName = cmdArgs[0].Remove(0, 1);
|
|
if (Commands.Any(x => x.Key.Name == cmdName))
|
|
{
|
|
CommandContext ctx = new()
|
|
{
|
|
Client = Clients.First(x => x.Player.Username == packet.Username),
|
|
Args = cmdArgs.Skip(1).ToArray()
|
|
};
|
|
|
|
KeyValuePair<Command, Action<CommandContext>> command = Commands.First(x => x.Key.Name == cmdName);
|
|
command.Value.Invoke(ctx);
|
|
}
|
|
else
|
|
{
|
|
NetConnection userConnection = Util.GetConnectionByUsername(packet.Username);
|
|
if (userConnection == default)
|
|
{
|
|
return;
|
|
}
|
|
|
|
outgoingMessage = MainNetServer.CreateMessage();
|
|
new ChatMessagePacket()
|
|
{
|
|
Username = "Server",
|
|
Message = "Command not found!"
|
|
}.PacketToNetOutGoingMessage(outgoingMessage);
|
|
MainNetServer.SendMessage(outgoingMessage, userConnection, NetDeliveryMethod.ReliableOrdered, 0);
|
|
}
|
|
|
|
return;
|
|
}
|
|
else if (GameMode.API.InvokeChatMessage(packet.Username, packet.Message))
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
|
|
packet.Message = packet.Message.Replace("~", "");
|
|
|
|
outgoingMessage = MainNetServer.CreateMessage();
|
|
packet.PacketToNetOutGoingMessage(outgoingMessage);
|
|
MainNetServer.SendMessage(outgoingMessage, targets ?? MainNetServer.Connections, NetDeliveryMethod.ReliableOrdered, 0);
|
|
|
|
Logging.Info(packet.Username + ": " + packet.Message);
|
|
}
|
|
#endregion
|
|
|
|
#region -- NPC --
|
|
private static void FullSyncNpc(NetConnection local, FullSyncNpcPacket packet)
|
|
{
|
|
List<NetConnection> clients;
|
|
if ((clients = Util.GetAllInRange(packet.Position, 300f, local)).Count == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
|
|
packet.PacketToNetOutGoingMessage(outgoingMessage);
|
|
MainNetServer.SendMessage(outgoingMessage, clients, NetDeliveryMethod.UnreliableSequenced, 0);
|
|
}
|
|
|
|
private static void FullSyncNpcVeh(NetConnection local, FullSyncNpcVehPacket packet)
|
|
{
|
|
List<NetConnection> clients;
|
|
if ((clients = Util.GetAllInRange(packet.Position, 300f, local)).Count == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
NetOutgoingMessage outgoingMessage = MainNetServer.CreateMessage();
|
|
packet.PacketToNetOutGoingMessage(outgoingMessage);
|
|
MainNetServer.SendMessage(outgoingMessage, clients, NetDeliveryMethod.UnreliableSequenced, 0);
|
|
}
|
|
#endregion
|
|
|
|
public static void RegisterCommand(string name, Action<CommandContext> callback)
|
|
{
|
|
Command command = new() { Name = name };
|
|
|
|
if (Commands.ContainsKey(command))
|
|
{
|
|
throw new Exception("Command \"" + command.Name + "\" was already been registered!");
|
|
}
|
|
|
|
Commands.Add(command, callback);
|
|
}
|
|
|
|
public static void RegisterCommands<T>()
|
|
{
|
|
IEnumerable<MethodInfo> commands = typeof(T).GetMethods().Where(method => method.GetCustomAttributes(typeof(CommandAttribute), false).Any());
|
|
|
|
foreach (MethodInfo method in commands)
|
|
{
|
|
CommandAttribute attribute = method.GetCustomAttribute<CommandAttribute>(true);
|
|
|
|
RegisterCommand(attribute.Name, (Action<CommandContext>)Delegate.CreateDelegate(typeof(Action<CommandContext>), method));
|
|
}
|
|
}
|
|
}
|
|
}
|