init commit

This commit is contained in:
MeexReay 2024-07-16 02:54:54 +03:00
parent 2759076c93
commit 362ea225d5
6 changed files with 931 additions and 0 deletions

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Cargo.toml Normal file
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[package]
name = "meexprox"
version = "0.1.0"
edition = "2021"
[dependencies]
serde_yml = "0.0.10"
rust_mc_proto = "0.1.15"
uuid = "1.10.0"
log = "0.4.22"
simplelog = "0.12.2"

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config.yml Normal file
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host: 127.0.0.1:25565 # host to bind meexprox
talk_host: 127.0.0.1:12346 # secret host to talk with meexprox (optional)
talk_secret: qwerty123456 # secret token for talk with meexprox (optional)
servers: # verified servers (name -> ip)
play: 127.0.0.1:12345
forced_hosts: # connect to server from connected hostname (name -> hostname) (optional)
play: play.localhost
default_server: play # default server to connect (optional)
player_forwarding: disabled # how to transfer player ip to connected server (handshake / plugin response / disabled)
no_pf_for_ip_connect: true # disable player forwarding for connecting with server ip

5
latest.log Normal file
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23:50:29 [INFO] meexprox started on 127.0.0.1:25565
23:50:49 [ERROR] clientbound error
23:50:49 [ERROR] serverbound error
23:51:05 [ERROR] clientbound error
23:51:05 [ERROR] serverbound error

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src/lib.rs Normal file
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use log::{debug, error, info};
use rust_mc_proto::{
DataBufferReader, DataBufferWriter, MinecraftConnection, Packet, ProtocolError, Zigzag,
};
use serde_yml::Value;
use std::{
error::Error,
fs,
net::{SocketAddr, TcpListener, TcpStream},
sync::{Arc, Mutex},
thread,
};
use uuid::Uuid;
#[derive(Clone)]
pub struct ProxyServer {
pub name: String,
pub host: String,
pub forced_host: Option<String>,
}
impl ProxyServer {
pub fn new(name: String, host: String, forced_host: Option<String>) -> ProxyServer {
ProxyServer {
name,
host,
forced_host,
}
}
}
#[derive(Debug)]
pub enum ProxyError {
ConfigParse,
ServerConnect,
}
impl std::fmt::Display for ProxyError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "({:?})", self)
}
}
impl std::error::Error for ProxyError {}
macro_rules! extract_string {
($data:expr, $key:expr) => {
match $data.get(&Value::String($key.to_string())) {
Some(Value::String(val)) => Some(val.clone()),
_ => None,
}
};
}
#[derive(Clone)]
pub enum PlayerForwarding {
Handshake,
PluginResponse,
Disabled,
}
#[derive(Clone)]
pub struct ProxyConfig {
pub host: String,
pub servers: Vec<ProxyServer>,
pub default_server: Option<ProxyServer>,
pub talk_host: Option<String>,
pub talk_secret: Option<String>,
pub player_forwarding: PlayerForwarding,
}
impl ProxyConfig {
pub fn new(
host: String,
servers: Vec<ProxyServer>,
default_server: Option<ProxyServer>,
talk_host: Option<String>,
talk_secret: Option<String>,
player_forwarding: PlayerForwarding,
) -> ProxyConfig {
ProxyConfig {
host,
servers,
default_server,
talk_host,
talk_secret,
player_forwarding,
}
}
pub fn load(path: &str) -> Result<ProxyConfig, Box<dyn std::error::Error>> {
let data = serde_yml::from_str::<Value>(&fs::read_to_string(path)?)?;
let data = data.as_mapping().ok_or(ProxyError::ConfigParse)?;
let host = extract_string!(data, "host").ok_or(ProxyError::ConfigParse)?;
let talk_host = extract_string!(data, "talk_host");
let talk_secret = extract_string!(data, "talk_secret");
let player_forwarding = match extract_string!(data, "player_forwarding") {
Some(pf) => match pf.as_str() {
"plugin response" => PlayerForwarding::PluginResponse,
"disabled" => PlayerForwarding::Disabled,
_ => PlayerForwarding::Handshake,
},
_ => PlayerForwarding::Handshake,
};
let mut servers = Vec::new();
if let Some(servers_map) = data
.get(&Value::String("servers".to_string()))
.and_then(Value::as_mapping)
{
for (name, addr) in servers_map {
if let (Value::String(name), Value::String(addr)) = (name, addr) {
servers.push(ProxyServer::new(name.clone(), addr.clone(), None));
}
}
}
if let Some(forced_hosts_map) = data
.get(&Value::String("forced_hosts".to_string()))
.and_then(Value::as_mapping)
{
for (name, host) in forced_hosts_map {
if let (Value::String(name), Value::String(host)) = (name, host) {
if let Some(server) = servers.iter_mut().find(|s| s.name == *name) {
server.forced_host = Some(host.clone());
}
}
}
}
let default_server = extract_string!(data, "default_server")
.and_then(|ds| servers.iter().find(|s| s.name == ds).cloned());
Ok(ProxyConfig::new(
host,
servers,
default_server,
talk_host,
talk_secret,
player_forwarding,
))
}
pub fn get_server_by_name(&self, name: &str) -> Option<ProxyServer> {
for server in &self.servers {
if &server.name == name {
return Some(server.clone());
}
}
None
}
pub fn get_server_by_forced_host(&self, forced_host: &str) -> Option<ProxyServer> {
for server in &self.servers {
if let Some(server_forced_host) = &server.forced_host {
if server_forced_host == forced_host {
return Some(server.clone());
}
}
}
None
}
pub fn get_host(&self) -> &str {
&self.host
}
pub fn get_talk_enabled(&self) -> bool {
self.talk_host.is_some() && self.talk_secret.is_some()
}
pub fn get_talk_host(&self) -> Option<&String> {
self.talk_host.as_ref()
}
pub fn get_default_server(&self) -> Option<ProxyServer> {
self.default_server.clone()
}
pub fn get_talk_secret(&self) -> Option<&String> {
self.talk_secret.as_ref()
}
}
pub struct ProxyPlayer {
pub connection: TcpStream,
pub connection_server: TcpStream,
pub name: Option<String>,
pub uuid: Option<Uuid>,
pub server: Option<ProxyServer>,
}
impl ProxyPlayer {
pub fn new(
connection: TcpStream,
connection_server: TcpStream,
name: Option<String>,
uuid: Option<Uuid>,
server: Option<ProxyServer>,
) -> ProxyPlayer {
ProxyPlayer {
connection,
connection_server,
name,
uuid,
server,
}
}
}
pub struct MeexProx {
pub config: ProxyConfig,
pub players: Vec<ProxyPlayer>,
pub listener: Option<TcpListener>,
}
impl MeexProx {
pub fn new(config: ProxyConfig) -> MeexProx {
MeexProx {
config,
players: Vec::new(),
listener: None,
}
}
pub fn get_player(&self, uuid: Uuid) -> Option<&ProxyPlayer> {
for player in &self.players {
if let Some(player_uuid) = player.uuid {
if player_uuid == uuid {
return Some(player);
}
}
}
None
}
pub fn accept(this: Arc<Mutex<Self>>, stream: TcpStream) -> Result<(), Box<dyn Error>> {
let Ok(addr) = stream.peer_addr() else {
return Ok(());
};
let server_config = this.lock().unwrap().config.clone();
let mut client_conn = MinecraftConnection::new(stream);
// TODO: remove this anti-ipv6 mrakobesie!!
let SocketAddr::V4(addrv4) = addr else {
return Ok(());
};
debug!(
"accepted stream {}.{}.{}.{}:{}",
addrv4.ip().octets()[0],
addrv4.ip().octets()[1],
addrv4.ip().octets()[2],
addrv4.ip().octets()[3],
addrv4.port()
);
// TODO: remove this anti-ipv6 mrakobesie!!
let mut handshake = client_conn.read_packet()?;
if handshake.id() != 0x00 {
return Ok(());
}
let protocol_version = handshake.read_u16_varint()?;
let server_address = handshake.read_string()?;
let server_port = handshake.read_unsigned_short()?;
let next_state = handshake.read_u8_varint()?;
let server = server_config
.get_server_by_forced_host(&server_address)
.or(server_config.get_default_server())
.ok_or(ProxyError::ConfigParse)?;
let mut server_conn = MinecraftConnection::connect(&server.host)?;
let handshake = Packet::build(0x00, |handshake| {
handshake.write_u16_varint(protocol_version)?;
handshake.write_string(&server_address)?;
handshake.write_unsigned_short(server_port)?;
handshake.write_u8_varint(next_state)?;
if let PlayerForwarding::Handshake = server_config.player_forwarding {
if let SocketAddr::V4(addr) = addr {
handshake.write_boolean(false)?; // is ipv6
handshake.write_unsigned_short(addr.port())?; // port
handshake.write_bytes(&addr.ip().octets())?; // octets
} else if let SocketAddr::V6(addr) = addr {
handshake.write_boolean(true)?;
handshake.write_unsigned_short(addr.port())?;
handshake.write_bytes(&addr.ip().octets())?;
}
}
Ok(())
})?;
server_conn.write_packet(&handshake)?;
if next_state == 1 {
debug!("state: motd");
loop {
server_conn.write_packet(&client_conn.read_packet()?)?;
client_conn.write_packet(&server_conn.read_packet()?)?;
}
} else if next_state == 2 {
debug!("state: login");
let plugin_response_packet = Packet::build(0x02, |packet| {
packet.write_i8_varint(-99)?;
packet.write_boolean(true)?;
if let SocketAddr::V4(addr) = addr {
packet.write_boolean(false)?; // is ipv6
packet.write_unsigned_short(addr.port())?; // port
packet.write_bytes(&addr.ip().octets())?; // octets
} else if let SocketAddr::V6(addr) = addr {
packet.write_boolean(true)?;
packet.write_unsigned_short(addr.port())?;
packet.write_bytes(&addr.ip().octets())?;
}
Ok(())
})?;
thread::spawn({
let mut client_conn = client_conn.try_clone().unwrap();
let mut server_conn = server_conn.try_clone().unwrap();
move || {
move || -> Result<(), ProtocolError> {
let mut joined = false;
loop {
let mut packet = match client_conn.read_packet() {
Ok(packet) => packet,
Err(_) => break,
};
if packet.id() == 0x00 && !joined {
let name = packet.read_string()?;
let uuid = packet.read_uuid()?;
this.lock().unwrap().players.push(ProxyPlayer::new(
client_conn.get_ref().try_clone().unwrap(),
server_conn.get_ref().try_clone().unwrap(),
Some(name),
Some(uuid),
Some(server.clone()),
));
joined = true;
}
// debug!("[C->S] sending packet {:#04X?} (size: {})", packet.id(), packet.len());
server_conn.write_packet(&packet)?;
}
error!("serverbound error");
Ok(())
}()
.or_else(|e| {
error!("serverbound error: {:?}", e);
Ok::<(), ()>(())
})
.unwrap();
}
});
move || -> Result<(), ProtocolError> {
loop {
let mut packet = match server_conn.read_packet() {
Ok(packet) => packet,
Err(_) => break,
};
if packet.id() == 0x02 {
if let PlayerForwarding::PluginResponse = server_config.player_forwarding {
debug!(
"[C->S] sending packet {:#04X?} (size: {})",
plugin_response_packet.id(),
plugin_response_packet.len()
);
server_conn.write_packet(&plugin_response_packet)?;
}
}
// debug!("[C<-S] sending packet {:#04X?} (size: {})", packet.id(), packet.len());
client_conn.write_packet(&packet)?;
if packet.id() == 0x03 {
let threshold = packet.read_isize_varint()?;
if threshold >= 0 {
let threshold = threshold.zigzag();
server_conn.set_compression(Some(threshold));
client_conn.set_compression(Some(threshold));
} else {
server_conn.set_compression(None);
client_conn.set_compression(None);
}
}
}
error!("clientbound error");
Ok(())
}()
.or_else(|e| {
error!("clientbound error: {:?}", e);
Ok::<(), ()>(())
})
.unwrap();
}
Ok(())
}
pub fn start(self) {
let listener = TcpListener::bind(self.config.get_host()).expect("invalid host");
info!("meexprox started on {}", self.config.get_host());
let mutex_self = Arc::new(Mutex::new(self));
for client in listener.incoming() {
if let Ok(client) = client {
let mutex_self_clone = mutex_self.clone();
thread::spawn(move || {
Self::accept(mutex_self_clone, client).expect("accept error");
});
}
}
}
}

16
src/main.rs Normal file
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@ -0,0 +1,16 @@
use meexprox::{MeexProx, ProxyConfig};
use simplelog::{CombinedLogger, TermLogger, Config, LevelFilter, TerminalMode, ColorChoice, WriteLogger};
use std::fs::File;
fn main() {
CombinedLogger::init(
vec![
TermLogger::new(LevelFilter::Debug, Config::default(), TerminalMode::Mixed, ColorChoice::Auto),
WriteLogger::new(LevelFilter::Info, Config::default(), File::create("latest.log").unwrap()),
]
).unwrap();
let config = ProxyConfig::load("config.yml").expect("config parse error");
let meexprox = MeexProx::new(config);
meexprox.start();
}