feat: add connection filters; and config struct;

also move sanitize_addr to mc_server module
This commit is contained in:
Tamipes 2025-12-14 12:56:21 +01:00
parent 3dcf2f03a8
commit 822330ef87
7 changed files with 94 additions and 41 deletions

View file

@ -11,7 +11,7 @@ use tokio::task::JoinHandle;
use tracing::Instrument;
use crate::{
mc_server::{MinecraftAPI, MinecraftServerHandle, ServerDeploymentStatus},
mc_server::{sanitize_addr, MinecraftAPI, MinecraftServerHandle, ServerDeploymentStatus},
packets::{
clientbound::status::StatusTrait,
serverbound::handshake::{self},
@ -430,34 +430,3 @@ impl From<kube::Error> for OpaqueError {
OpaqueError::create(value.to_string().as_str())
}
}
fn terminate_at_null(str: &str) -> &str {
match str.split('\0').next() {
Some(x) => x,
None => str,
}
}
fn sanitize_addr(addr: &str) -> &str {
// Thanks to a buggy minecraft, when the client sends a join
// from a SRV DNS record, it will not use the address typed
// in the game, but use the address redicted *to* by the
// DNS record as the address for joining, plus a trailing "."
//
// For example:
// server.example.com (_minecraft._tcp.server.example.com)
// (the typed address) I (the DNS SRV record which gets read)
// V
// 5 25565 server.example.com
// I (the response for the DNS SRV query)
// V
// server.example.com.
// (the address used in the protocol)
let addr = addr.trim_end_matches(".");
// Modded minecraft clients send null terminated strings,
// after which they have extra data. This just removes them
// from the addr lookup
let addr = terminate_at_null(addr);
addr
}