package me.totalfreedom.totalfreedommod; import java.util.regex.Pattern; import lombok.Getter; import lombok.Setter; import me.totalfreedom.totalfreedommod.config.ConfigEntry; import me.totalfreedom.totalfreedommod.util.FSync; import me.totalfreedom.totalfreedommod.util.FUtil; import org.bukkit.ChatColor; import org.bukkit.entity.Player; import org.bukkit.event.EventHandler; import org.bukkit.event.EventPriority; import org.bukkit.event.player.AsyncPlayerPreLoginEvent; import org.bukkit.event.player.PlayerJoinEvent; import org.bukkit.event.player.PlayerLoginEvent; import org.bukkit.scheduler.BukkitRunnable; public class LoginProcess extends FreedomService { public static final int DEFAULT_PORT = 25565; public static final int MIN_USERNAME_LENGTH = 2; public static final int MAX_USERNAME_LENGTH = 20; public static final Pattern USERNAME_REGEX = Pattern.compile("^[\\w\\d_]{3,20}$"); // @Getter @Setter private boolean lockdownEnabled = false; public LoginProcess(TotalFreedomMod plugin) { super(plugin); } @Override protected void onStart() { } @Override protected void onStop() { } /* * Banning and Permban checks are their respective services */ @EventHandler(priority = EventPriority.NORMAL) public void onPlayerPreLogin(AsyncPlayerPreLoginEvent event) { final String ip = event.getAddress().getHostAddress().trim(); final boolean isAdmin = plugin.al.getEntryByIp(ip) != null; // Check if the player is already online for (Player onlinePlayer : server.getOnlinePlayers()) { if (!onlinePlayer.getName().equalsIgnoreCase(event.getName())) { continue; } if (isAdmin) { event.allow(); FSync.playerKick(onlinePlayer, "An admin just logged in with the username you are using."); return; } event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, "Your username is already logged into this server."); return; } } @EventHandler(priority = EventPriority.HIGH) public void onPlayerLogin(PlayerLoginEvent event) { final Player player = event.getPlayer(); final String username = player.getName(); final String ip = event.getAddress().getHostAddress().trim(); // Check username length if (username.length() < MIN_USERNAME_LENGTH || username.length() > MAX_USERNAME_LENGTH) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "Your username is an invalid length (must be between 3 and 20 characters long)."); return; } // Check username characters if (!USERNAME_REGEX.matcher(username).find()) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "Your username contains invalid characters."); return; } // Check force-IP match if (ConfigEntry.FORCE_IP_ENABLED.getBoolean()) { final String hostname = event.getHostname().replace("\u0000FML\u0000", ""); // Forge fix - https://github.com/TotalFreedom/TotalFreedomMod/issues/493 final String connectAddress = ConfigEntry.SERVER_ADDRESS.getString(); final int connectPort = server.getPort(); if (!hostname.equalsIgnoreCase(connectAddress + ":" + connectPort) && !hostname.equalsIgnoreCase(connectAddress + ".:" + connectPort)) { final int forceIpPort = ConfigEntry.FORCE_IP_PORT.getInteger(); event.disallow(PlayerLoginEvent.Result.KICK_OTHER, ConfigEntry.FORCE_IP_KICKMSG.getString() .replace("%address%", ConfigEntry.SERVER_ADDRESS.getString() + (forceIpPort == DEFAULT_PORT ? "" : ":" + forceIpPort))); return; } } // Check if player is admin // Not safe to use TFM_Util.isSuperAdmin(player) because player.getAddress() will return a null until after player login. final boolean isAdmin = plugin.al.getEntryByIp(ip) != null; // Validation below this point if (isAdmin) // Player is superadmin { // Force-allow log in event.allow(); int count = server.getOnlinePlayers().size(); if (count >= server.getMaxPlayers()) { for (Player onlinePlayer : server.getOnlinePlayers()) { if (!plugin.al.isAdmin(onlinePlayer)) { onlinePlayer.kickPlayer("You have been kicked to free up room for an admin."); count--; } if (count < server.getMaxPlayers()) { break; } } } if (count >= server.getMaxPlayers()) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "The server is full and a player could not be kicked, sorry!"); return; } return; } // Player is not an admin // Server full check if (server.getOnlinePlayers().size() >= server.getMaxPlayers()) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "Sorry, but this server is full."); return; } // Admin-only mode if (ConfigEntry.ADMIN_ONLY_MODE.getBoolean()) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "Server is temporarily open to admins only."); return; } // Lockdown mode if (lockdownEnabled) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "Server is currently in lockdown mode."); return; } // Whitelist if (plugin.si.isWhitelisted()) { if (!plugin.si.getWhitelisted().contains(username.toLowerCase())) { event.disallow(PlayerLoginEvent.Result.KICK_OTHER, "You are not whitelisted on this server."); return; } } } @EventHandler(priority = EventPriority.MONITOR) public void onPlayerJoin(PlayerJoinEvent event) { final Player player = event.getPlayer(); new BukkitRunnable() { @Override public void run() { if (ConfigEntry.ADMIN_ONLY_MODE.getBoolean()) { player.sendMessage(ChatColor.RED + "Server is currently closed to non-superadmins."); } if (lockdownEnabled) { FUtil.playerMsg(player, "Warning: Server is currenty in lockdown-mode, new players will not be able to join!", ChatColor.RED); } } }.runTaskLater(plugin, 20L * 1L); } }