fix(bans): persist client machine fingerprint so machine/super bans work

The Nitro client already sends a strong machine fingerprint (Thumbmark,
"IID-<hash>") via the UniqueID packet (header 2490 -> MachineIDEvent), but
the emulator only stored it on the GameClient and never copied it onto the
Habbo's HabboInfo, so it was never written to users.machine_id. As a result
machine/super bans (which read users.machine_id) matched nobody.

- MachineIDEvent: when the fingerprint arrives and the Habbo is already
  loaded, copy it onto HabboInfo and persist (run the Habbo save).
- SecureLoginEvent: if the fingerprint arrived before login, copy it onto
  HabboInfo right before the login save.

This makes machine/super bans effective without changing the client.
This commit is contained in:
medievalshell
2026-05-31 00:03:39 +02:00
parent bf1a29a6e8
commit da63439d53
2 changed files with 16 additions and 0 deletions
@@ -1,5 +1,6 @@
package com.eu.habbo.messages.incoming.handshake;
import com.eu.habbo.Emulator;
import com.eu.habbo.messages.NoAuthMessage;
import com.eu.habbo.messages.incoming.MessageHandler;
import org.slf4j.Logger;
@@ -24,6 +25,15 @@ public class MachineIDEvent extends MessageHandler {
this.client.setMachineId(storedMachineId);
// Persist the machine fingerprint onto the user so machine/super bans can
// target it (createOfflineUserBan copies users.machine_id). The Nitro client
// sends this UniqueID packet right after the SSO ticket, so the Habbo is
// normally already loaded by the time we get here.
if (!storedMachineId.isEmpty() && this.client.getHabbo() != null && this.client.getHabbo().getHabboInfo() != null) {
this.client.getHabbo().getHabboInfo().setMachineID(storedMachineId);
Emulator.getThreading().run(this.client.getHabbo());
}
LOGGER.debug("Setting client MachineId to {}", storedMachineId);
}
}
@@ -161,6 +161,12 @@ public class SecureLoginEvent extends MessageHandler {
throw new NullPointerException(habbo.getHabboInfo().getUsername() + " has a NON EXISTING RANK!");
}
// If the machine fingerprint already arrived (UniqueID before login),
// persist it so machine/super bans can target this user.
if (this.client.getMachineId() != null && !this.client.getMachineId().isEmpty()) {
this.client.getHabbo().getHabboInfo().setMachineID(this.client.getMachineId());
}
Emulator.getThreading().run(habbo);
Emulator.getGameEnvironment().getHabboManager().addHabbo(habbo);
} catch (Exception e) {