Check if account has more than one IP?

I want to be able to run /ipcheck <user> and if they have more than one account with that IP it returns saying the other IP accounts. Is this possible? How do I check if a user has more than one account on an IP?

 

You would need to log the IP of an account every time it connects, then get all indices from the database with the IP you want to check for.

 

Well to check the ip you could do this .

Code:java

                        Player s = (Player)sender;
                        Player target = sender.getServer().getPlayer(args[0]);
                        TargetIp = target.getAddress();
                        InetSocketAddress = TargetIp;
                        targetname = target.getDisplayName();
                        s.sendMessage(targetname + ": " + targetIp);

 

Don't do target.getDisplayName() as players don't have display names unless a plugin sets it (like essential's /nick function). Do target.getName()

 

Minnymin3
I don't usually ever use getDisplayName(), but doesn't it return the players name if a display name hasn't been set? Not sure, but I think it does.

 

No it throws an NPE (im pretty sure)

 

Minnymin3
Ok, thanks for that then! I never really figured out what it did, I just always see people using it when getName() can be used

 

The display name returns the normal name of the player if no plugin changed it..

If you want to look in the source:
https://github.com/Bukkit/CraftBukk...va/net/minecraft/server/EntityPlayer.java#L85

 

The only issue I can see here is users with dynamic ip addresses as their ip will change after x days

 

And turning off their router will change their IP address.
- http://whatismyipaddress.com/change-ip

 

My IP that is used publicly has not changed for over a year. My router is restarted daily because its crap.

 

You might have a static IP.

 

Ya. Yay for static IPs! They make hosting servers really easy.

 

Jozeth
Restarting the router (releasing and renewing the IP-lease from the DHCP) only changes the IP-adress if the lease-time has run out as far as I know