IP Limiter (Odin-Based)

Fore-Notes:
1) Imports may be required.
2) Variables may be different since I got this from my own source (Knight Engine).
3) As I mentioned above, this is from my source Knight Engine adapted to work on Odin-based sources.
4) Do not go off-topic. Ok? Thanks! Enjoy!
5) If I am missing something, then I will edit what I am missing.

Go into MapleServerHandler.java and add the following within the class declaration:

Code:

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private static final byte IP_LIMIT = 1;
private static final Map<String, Set<MapleClient>> clients;

static {
    clients = new HashMap<String, Set<MapleClient>>();
}

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Add the following before adding the client as an attribute to the IoSession in sessionOpened (assuming your client variable is c):

Code:

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String ip = is.getRemoteAddress().toString().split(":")[0];
Set<MapleClient> reg_ips;
if (clients.get(ip) == null) {
    reg_ips = new HashSet<MapleClient>();
    reg_ips.add(c);
    clients.put(ip, reg_ips);
} else {
    reg_ips = clients.get(ip);
    if (reg_ips.size() >= IP_LIMIT) {
        is.close(true);
        // XXX dispose objects here if required.
        return;
    } else {
        reg_ips.add(c);
    }
}

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Add before the super call in sessionClosed:

Code:

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String ip = s.getRemoteAddress().toString().split(":")[0];
clients.get(ip).remove((MapleClient) s.removeAttribute(MapleClient.CLIENT_KEY));
if (clients.get(ip).isEmpty()) {
    clients.remove(ip);
}

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I don't intend on making this anymore coder-kiddy friendly than it already is. If you don't like this release, then you can troll all you like.

What does this exactly do?
Posted via Mobile Device

Quote:

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Originally Posted by LolIH8Flamers

What does this exactly do?
Posted via Mobile Device

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Limits the amount of the same ip that can connect to your server (if you have something against multi-client I suppose).

Oh great, thanks would it work for shootsource too?
Posted via Mobile Device

Quote:

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Originally Posted by LolIH8Flamers

Oh great, thanks would it work for shootsource too?
Posted via Mobile Device

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It should work for all Odin-based sources that use mina-core (or can be adjusted for any net wrapper that can get you the remote ip).

Ahh I don't find a need for this but oh well.

Quote:

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Originally Posted by .:LastBreath:.

Ahh I don't find a need for this but oh well.

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You might when you have noobs "trying" to DDOS you. I mean unless they have a whole botnet (let's face it, not really that much people do) with multiple proxy servers they won't be doing considerable damage.

This doesn't support various players from the same household.

If you want to support LAN IP connections, add the hostname to the reg_ips instead of the WAN.

Quote:

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Originally Posted by ProGamerForLife

This doesn't support various players from the same household.

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You read my mind, I guess setting this to about 5 should be more than enough, but then again you wouldn't be preventing multi-clients.

If you wants to prevent multi-client, better go for MAC's.

Quote:

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Originally Posted by Zygon

You might when you have noobs "trying" to DDOS you. I mean unless they have a whole botnet (let's face it, not really that much people do) with multiple proxy servers they won't be doing considerable damage.

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pg2 :thumbup1::thumbup1::thumbup1:

Quote:

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Originally Posted by ProGamerForLife

This doesn't support various players from the same household.

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Which is why there is an option for the set limit. Do whatever you want with this. I just released this for some kid asking for it on my cbox.