Plugin Help How to check if player name and IP match the playername and IP in config file

Hi,

Basically i've set it so that when a user is banned, the username and IP are logged to a config file like so:

playername: IP

Now, i'm trying to get the plugin to check the ip of a new player at event PlayerJoinEvent, and match it vs the IPs stored in the config file (this is to check whether a user who has been banned is simply logging in on another account).

I'm drawing a blank on how to do that, as you can see in the PlayerJointEvent section in my code:

Code:

package me.Caedus;

import org.bukkit.Bukkit;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerKickEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class IPWarn extends JavaPlugin implements Listener{
   
    @Override
    public void onEnable(){
        getLogger().info("IPWarn Plugin initialized");
  
        
        final FileConfiguration config = this.getConfig();
       
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
        config.options().copyDefaults(true);
       
        saveConfig();
        reloadConfig();
       
    }
   
   
    @EventHandler
    public void onBan(PlayerKickEvent e){
        if(e.getReason().contains("ban")){
           
           
           
            Player p = (Player) e.getPlayer();
           
            String address = p.getAddress().toString();
           
            if(address.charAt(0) == '/'){
                String newAddress = address.substring(1);
                p.sendMessage("Hi "+p.getDisplayName()+", your IP is: "+newAddress+" (substring1)");
               
               
                getConfig().set(p.getName(), newAddress);
               
               
                saveConfig();
               
            }   
   
        }
       
       
    }
   
   
    @EventHandler
    public void onJoin(PlayerJoinEvent e){
        Player p = (Player) e.getPlayer();
       
        String address = p.getAddress().toString();
       
        if(address.charAt(0) == '/'){
            String newAddress = address.substring(1);
           
            if(getConfig().get(p.getName(), newAddress) == p.getAddress() ){
                p.sendMessage("ok");
            }    else {
                Bukkit.broadcastMessage("nope");
            }
           
        }
   
       
    }
   

   
   
   
   
   
   

}

 

So, if i understand, you would check if a player who join the server has an account with his IP banned.
Therefore, you can't use playername: IP but i recommend a list with all IPs banned.
That's how i would do that:

Code:

@EventHandler
    public void onBan(PlayerKickEvent e) {
        if(e.getReason().contains("ban")) {
            Player p = (Player) e.getPlayer();
            String address = p.getAddress().toString().substring(1);
            p.sendMessage("Hi "+p.getDisplayName()+", your IP is: "+address+"."); // Useless because the player is kicked.
            List<String> BannedIPs;
            if(getConfig().getStringList("BannedIPs") != null) BannedIPs = getConfig().getStringList("BannedIPs");
            BannedIPs.add(address);
            getConfig().set("BannedIPs", BannedIPs);
            saveConfig();
        }
    }
  
@EventHandler
    public void onJoin(PlayerJoinEvent e){
        Player p = (Player) e.getPlayer();
        String address = p.getAddress().toString().substring(1);
        if(getConfig().getStringList("BannedIPs") != null && getConfig().getStringList("BannedIPs").contains(address)) p.sendMessage(ChatColor.RED+"Your IP has been banned on this server.");
        else Bukkit.broadcastMessage(ChatColor.GREEN+"You are clean.");
    }

 

@Caedus @MrTigreroux You would do this:

Code:

for (String s : getConfig().getKeys(false)) {
    if (getConfig().getString(s).equals(ipString)) {
        doWhatever();
    }
}