TotalFreedomMod/src/main/java/me/totalfreedom/totalfreedommod/LoginProcess.java

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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_FULL, "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(TotalFreedomMod.plugin, 20L * 1L);
}
}