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db working, reorganize minecraft socket code

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This commit is contained in:
tomoron
2026-05-30 00:31:12 +02:00
parent 6e7285507d
commit 2303f06fea
14 changed files with 381 additions and 314 deletions
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2
migrations/2026-05-28-142613-0000_servers/up.sql
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@ -1,5 +1,5 @@
CREATE TABLE "servers" (
"id" int PRIMARY KEY,
"id" BIGSERIAL PRIMARY KEY,
"name" varchar(255) UNIQUE NOT NULL,
"volume_path" varchar(255) UNIQUE NOT NULL,
"last_login" timestamp,

128
src/main.rs
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@ -1,42 +1,55 @@
//use tokio::net::TcpListener;
use std::io;
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.rs :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2026/05/29 21:22:17 by tomoron #+# #+# */
/* Updated: 2026/05/29 21:31:39 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
use bollard::{
query_parameters::{
ListImagesOptionsBuilder,
ListContainersOptionsBuilder,
CreateContainerOptionsBuilder
},
models::{
ContainerCreateBody
},
Docker
};
use tokio::net::TcpListener;
use tokio::io;
//use bollard::{
// query_parameters::{
// ListImagesOptionsBuilder,
// ListContainersOptionsBuilder,
// CreateContainerOptionsBuilder
// },
// models::{
// ContainerCreateBody
// },
// Docker
//};
//mod minecraft;
//use minecraft::process_mc_socket;
mod minecraft;
use minecraft::process_mc_socket;
//mod rpc;
//use rpc::process_rpc_socket;
mod rpc;
use rpc::process_rpc_socket;
use diesel::{prelude::*, r2d2::{ConnectionManager, Pool}};
mod models;
//mod models;
use dockermcmgr::schema;
//use dockermcmgr::schema;
use crate::models::{ Servers, CreateServer };
//use crate::models::{ Servers, CreateServer };
use std::env;
pub mod status;
//pub mod status;
use status::ServerStatus;
//use status::ServerStatus;
//
pub type DbPool = Pool<ConnectionManager<PgConnection>>;
fn get_connection_pool() -> Pool<ConnectionManager<PgConnection>> {
fn get_connection_pool() -> DbPool {
let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
let manager = ConnectionManager::<PgConnection>::new(&database_url);
@ -47,13 +60,37 @@ fn get_connection_pool() -> Pool<ConnectionManager<PgConnection>> {
#[tokio::main(flavor = "current_thread")]
async fn main() -> io::Result<()> {
// let conn = DB_CONN.get().expect("failed to get the connection from the pool");
let pool = get_connection_pool();
let mc_listener = TcpListener::bind("0.0.0.0:25565").await?;
let rpc_listener = TcpListener::bind("0.0.0.0:8080").await?;
loop {
tokio::select! {
Ok((socket, _)) = mc_listener.accept() => {
let cloned = pool.clone();
tokio::spawn(async move {
if let Err(e) = process_mc_socket(socket, cloned).await {
eprintln!("mc error: {:?}", e);
}
});
}
Ok((socket, _)) = rpc_listener.accept() => {
let cloned = pool.clone();
tokio::spawn(async move {
if let Err(e) = process_rpc_socket(socket, cloned).await {
eprintln!("rpc error: {:?}", e);
}
});
}
}
}
/*
let conn = &mut pool.get().unwrap();
let servers = schema::servers::table.select(Servers::as_select()).load(conn);
println!("servers : {:?}", servers);
let new_server = CreateServer {
name: "potato",
@ -64,7 +101,24 @@ async fn main() -> io::Result<()> {
redirect_ip: None
};
match diesel::insert_into(schema::servers::table)
.values(&new_server)
.execute(conn) {
Ok(a) => { println!("{:?}", a); },
Err(reason) => {println!("got an error : {:?}", reason) }
}
let start = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
let servers = schema::servers::table.select(Servers::as_select()).load(conn).unwrap();
let end = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
println!("servers : {:?}", servers);
println!("retreived in {:?}", end - start);
println!("server id : {}",servers[0].id);
Ok(())
*/
/*
println!("{:?}", docker);
let options = ListImagesOptionsBuilder::default()
@ -95,27 +149,5 @@ async fn main() -> io::Result<()> {
let start_res = docker.start_container("rust-created-container", None).await;
*/
/*
let mc_listener = TcpListener::bind("0.0.0.0:25565").await?;
let rpc_listener = TcpListener::bind("0.0.0.0:8080").await?;
loop {
tokio::select! {
Ok((socket, _)) = mc_listener.accept() => {
tokio::spawn(async move {
if let Err(e) = process_mc_socket(socket).await {
eprintln!("mc error: {:?}", e);
}
});
}
Ok((socket, _)) = rpc_listener.accept() => {
tokio::spawn(async move {
if let Err(e) = process_rpc_socket(socket).await {
eprintln!("rpc error: {:?}", e);
}
});
}
}
}
*/
}

228
src/minecraft/client.rs
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@ -1,228 +0,0 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* client.rs :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2026/05/07 17:23:09 by tomoron #+# #+# */
/* Updated: 2026/05/20 17:54:32 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
use json::object;
use tokio::net::TcpStream;
use std::collections::VecDeque;
use crate::minecraft::handshake::Handshake;
use crate::minecraft::varint::{varint_read, varint_write};
use std::{fmt, io};
pub struct Client {
pub in_stream: TcpStream,
read_buf: Vec<u8>,
buffer: Vec<u8>,
out_stream: Option<TcpStream>,
handshake: Option<Handshake>
}
impl Client {
pub fn create(stream: TcpStream) -> Self {
Self {
in_stream: stream,
read_buf: vec![0u8; 1024 * 8],
buffer: vec![],
out_stream: None,
handshake: None
}
}
pub async fn in_read(&mut self) -> Result<u8, String> {
loop
{
match self.in_stream.try_read(&mut self.read_buf) {
Ok(n) => {
if let Some(out_stream) = &self.out_stream {
let _ = out_stream.writable().await;
let _ = out_stream.try_write(&self.read_buf[..n]);
} else {
self.buffer_append((&self.read_buf[..n]).to_vec()).await?;
}
if n == 0 {
return Ok(0)
}
}
Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
return Ok(1);
}
Err(_e) => {
return Err("read failed".to_string())
}
}
}
}
pub async fn out_readable(&self) {
if let Some(stream) = &self.out_stream {
stream.readable().await.expect("readable call failed");
} else {
std::future::pending::<()>().await;
};
}
pub async fn out_read(&mut self) -> Result<i32, String> {
if let None = self.out_stream {
return Ok(1);
}
match self.out_stream.as_mut().unwrap().try_read(&mut self.read_buf) {
Ok(n) => {
let _ = self.in_stream.writable().await;
let _ = self.in_stream.try_write(&self.read_buf[..n]);
if n == 0 { Ok(0) } else { Ok(1) }
}
Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
Ok(1)
}
Err(_e) => {
Err("Failed to read".to_string())
}
}
}
pub async fn buffer_append(&mut self, data: Vec<u8>) -> Result<(),String> {
if data.len() == 0 {
return Ok(());
}
if self.buffer.len() + data.len() > 65536 {
return Err("buffer full".to_string());
}
let _ = self.buffer.extend(data);
while self.buffer.len() != 0 && self.buffer.len() - 1 >= self.buffer[0] as usize {
if self.buffer[0] == 0 {
return Err("invalid packet".to_string());
}
let len = varint_read(&mut self.buffer.clone().into())? as usize;
self.handle_packet(self.buffer[1..=len].to_vec().into()).await?;
self.buffer.drain(..len + 1);
if let Some(out_stream) = &self.out_stream {
if self.buffer.len() != 0 {
let _ = out_stream.writable().await;
let _ = out_stream.try_write(self.buffer.as_slice());
self.buffer.drain(..);
}
}
}
Ok(())
}
async fn send_packet(&self, data: Vec<u8>) {
let mut sent_data: Vec<u8> = varint_write(data.len() as i32);
sent_data.extend(data);
let _ = self.in_stream.writable().await;
match self.in_stream.try_write(sent_data.as_slice()) {
Err(e) => { eprintln!("error while sending response {:?}", e); },
_ => { }
}
}
async fn handle_packet(&mut self, mut packet: VecDeque<u8>) -> Result<(), String> {
let packet_id = varint_read(&mut packet)?;
if self.handshake.is_none() {
if packet_id != 0 {
return Err("packet 0 expected. invalid packet received".to_string());
}
self.handshake = Some(Handshake::from_packet(&mut packet)?);
if self.handshake.as_ref().unwrap().intent == 2 {
self.login_intent_handle(&mut packet, packet_id).await?;
}
return Ok(());
}
let intent = self.handshake.as_ref().unwrap().intent;
if intent == 1 {
self.status_intent_handle(&mut packet, packet_id).await?;
}
Ok(())
}
async fn status_intent_handle(&self, packet: &mut VecDeque<u8>, packet_id: i32) -> Result<(),String> {
let status_response = object! {
"version": {
"name": "idk",
"protocol" : self.handshake.as_ref().unwrap().protocol_version,
},
"players": {
"max": 420,
"online": 69
},
"description": "§c".to_string() + &self.handshake.as_ref().unwrap().server_address.clone() + "§r:§a" + &self.handshake.as_ref().unwrap().server_port.to_string(),
};
if packet_id == 0 {
let mut response : Vec<u8> = vec![];
let response_json = json::stringify(status_response);
let mut response_json_len = varint_write(response_json.len() as i32);
let mut response_packet_id = varint_write(0);
response.append(&mut response_packet_id);
response.append(&mut response_json_len);
response.append(&mut response_json.as_bytes().into());
println!("[{}] sent status response to client", self);
self.send_packet(response).await;
} else if packet_id == 1 {
let mut response = varint_write(1);
response.extend(packet.drain(..));
self.send_packet(response).await;
println!("[{}] sent ping response to client", self);
}
Ok(())
}
async fn login_intent_handle(&mut self, mut _packet: &mut VecDeque<u8>, _packet_id: i32) -> Result<(),String> {
let stream = TcpStream::connect("play.hypixel.net:25565").await.map_err(|_| "failed to connect to remote host".to_string())?;
let mut new_handshake = self.handshake.as_ref().unwrap().clone();
new_handshake.server_address = "play.hypixel.net".to_string();
new_handshake.server_port = 25565;
let handshake_packet = new_handshake.to_packet();
let mut packet = Vec::new();
packet.extend(varint_write(handshake_packet.len() as i32));
packet.extend(handshake_packet);
self.out_stream = Some(stream);
let _ = self.out_stream.as_ref().unwrap().writable().await;
let _ = self.out_stream.as_ref().unwrap().try_write(packet.as_slice());
println!("[{}] sent handshake to server", self);
Ok(())
}
}
impl fmt::Display for Client {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if let Some(handshake) = &self.handshake {
write!(f, "{}", handshake.server_address)
} else {
use std::os::unix::io::AsRawFd;
write!(f, "{}", self.in_stream.as_raw_fd())
}
}
}

122
src/minecraft/client/buffer.rs Normal file
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@ -0,0 +1,122 @@
use crate::minecraft::client::client::Client;
use crate::minecraft::varint::varint_read;
use crate::minecraft::handshake::Handshake;
use std::collections::VecDeque;
use std::io;
impl Client {
pub async fn in_read(&mut self) -> Result<u8, String> {
loop
{
match self.in_stream.try_read(&mut self.read_buf) {
Ok(n) => {
if let Some(out_stream) = &self.out_stream {
let _ = out_stream.writable().await;
let _ = out_stream.try_write(&self.read_buf[..n]);
} else {
self.buffer_append((&self.read_buf[..n]).to_vec()).await?;
}
if n == 0 {
return Ok(0)
}
}
Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
return Ok(1);
}
Err(_e) => {
return Err("read failed".to_string())
}
}
}
}
pub async fn out_readable(&self) {
if let Some(stream) = &self.out_stream {
stream.readable().await.expect("readable call failed");
} else {
std::future::pending::<()>().await;
};
}
pub async fn out_read(&mut self) -> Result<i32, String> {
if let None = self.out_stream {
return Ok(1);
}
match self.out_stream.as_mut().unwrap().try_read(&mut self.read_buf) {
Ok(n) => {
let _ = self.in_stream.writable().await;
let _ = self.in_stream.try_write(&self.read_buf[..n]);
if n == 0 { Ok(0) } else { Ok(1) }
}
Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
Ok(1)
}
Err(_e) => {
Err("Failed to read".to_string())
}
}
}
pub async fn buffer_append(&mut self, data: Vec<u8>) -> Result<(),String> {
if data.len() == 0 {
return Ok(());
}
if self.buffer.len() + data.len() > 65536 {
return Err("buffer full".to_string());
}
let _ = self.buffer.extend(data);
while self.buffer.len() != 0 && self.buffer.len() - 1 >= self.buffer[0] as usize {
if self.buffer[0] == 0 {
return Err("invalid packet".to_string());
}
let len = varint_read(&mut self.buffer.clone().into())? as usize;
self.handle_packet(self.buffer[1..=len].to_vec().into()).await?;
self.buffer.drain(..len + 1);
if let Some(out_stream) = &self.out_stream {
if self.buffer.len() != 0 {
let _ = out_stream.writable().await;
let _ = out_stream.try_write(self.buffer.as_slice());
self.buffer.drain(..);
}
}
}
Ok(())
}
async fn handle_packet(&mut self, mut packet: VecDeque<u8>) -> Result<(), String> {
let packet_id = varint_read(&mut packet)?;
if self.handshake.is_none() {
if packet_id != 0 {
return Err("packet 0 expected. invalid packet received".to_string());
}
self.handshake = Some(Handshake::from_packet(&mut packet)?);
if self.handshake.as_ref().unwrap().intent == 2 {
self.login_intent_handle(&mut packet, packet_id).await?;
}
return Ok(());
}
let intent = self.handshake.as_ref().unwrap().intent;
if intent == 1 {
self.status_intent_handle(&mut packet, packet_id).await?;
}
Ok(())
}
}

67
src/minecraft/client/client.rs Normal file
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@ -0,0 +1,67 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* client.rs :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2026/05/07 17:23:09 by tomoron #+# #+# */
/* Updated: 2026/05/30 00:27:19 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
use tokio::net::TcpStream;
use crate::minecraft::handshake::Handshake;
use crate::minecraft::varint::varint_write;
use std::fmt;
pub struct Client {
pub in_stream: TcpStream,
pub read_buf: Vec<u8>,
pub buffer: Vec<u8>,
pub out_stream: Option<TcpStream>,
pub handshake: Option<Handshake>,
pub dbPool: DbPool
}
use crate::DbPool;
impl Client {
pub fn create(stream: TcpStream, pool: DbPool) -> Self {
Self {
in_stream: stream,
read_buf: vec![0u8; 1024 * 8],
buffer: vec![],
out_stream: None,
handshake: None,
dbPool: pool
}
}
pub async fn send_packet(&self, data: Vec<u8>) {
let mut sent_data: Vec<u8> = varint_write(data.len() as i32);
sent_data.extend(data);
let _ = self.in_stream.writable().await;
match self.in_stream.try_write(sent_data.as_slice()) {
Err(e) => { eprintln!("error while sending response {:?}", e); },
_ => { }
}
}
}
impl fmt::Display for Client {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if let Some(handshake) = &self.handshake {
write!(f, "{}", handshake.server_address)
} else {
use std::os::unix::io::AsRawFd;
write!(f, "{}", self.in_stream.as_raw_fd())
}
}
}

26
src/minecraft/client/login.rs Normal file
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@ -0,0 +1,26 @@
use crate::minecraft::client::client::Client;
use crate::minecraft::varint::varint_write;
use std::collections::VecDeque;
use tokio::net::TcpStream;
impl Client {
pub async fn login_intent_handle(&mut self, mut _packet: &mut VecDeque<u8>, _packet_id: i32) -> Result<(),String> {
let stream = TcpStream::connect("play.hypixel.net:25565").await.map_err(|_| "failed to connect to remote host".to_string())?;
let mut new_handshake = self.handshake.as_ref().unwrap().clone();
new_handshake.server_address = "play.hypixel.net".to_string();
new_handshake.server_port = 25565;
let handshake_packet = new_handshake.to_packet();
let mut packet = Vec::new();
packet.extend(varint_write(handshake_packet.len() as i32));
packet.extend(handshake_packet);
self.out_stream = Some(stream);
let _ = self.out_stream.as_ref().unwrap().writable().await;
let _ = self.out_stream.as_ref().unwrap().try_write(packet.as_slice());
println!("[{}] sent handshake to server", self);
Ok(())
}
}

4
src/minecraft/client/mod.rs Normal file
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@ -0,0 +1,4 @@
pub mod client;
mod buffer;
mod status;
mod login;

42
src/minecraft/client/status.rs Normal file
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@ -0,0 +1,42 @@
use crate::minecraft::client::client::Client;
use json::object;
use crate::minecraft::varint::varint_write;
use std::collections::VecDeque;
impl Client {
pub async fn status_intent_handle(&self, packet: &mut VecDeque<u8>, packet_id: i32) -> Result<(),String> {
let status_response = object! {
"version": {
"name": "idk",
"protocol" : self.handshake.as_ref().unwrap().protocol_version,
},
"players": {
"max": 420,
"online": 69
},
"description": "§c".to_string() + &self.handshake.as_ref().unwrap().server_address.clone() + "§r:§a" + &self.handshake.as_ref().unwrap().server_port.to_string(),
};
if packet_id == 0 {
let mut response : Vec<u8> = vec![];
let response_json = json::stringify(status_response);
let mut response_json_len = varint_write(response_json.len() as i32);
let mut response_packet_id = varint_write(0);
response.append(&mut response_packet_id);
response.append(&mut response_json_len);
response.append(&mut response_json.as_bytes().into());
println!("[{}] sent status response to client", self);
self.send_packet(response).await;
} else if packet_id == 1 {
let mut response = varint_write(1);
response.extend(packet.drain(..));
self.send_packet(response).await;
println!("[{}] sent ping response to client", self);
}
Ok(())
}
}

2
src/minecraft/mod.rs
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@ -1,6 +1,6 @@
pub mod varint;
pub mod handshake;
pub mod client;
mod client;
mod socket;

8
src/minecraft/socket.rs
View File

@ -1,10 +1,12 @@
use crate::minecraft::client::Client;
use crate::minecraft::client::client::Client;
use tokio::net::TcpStream;
pub async fn process_mc_socket(stream: TcpStream) -> Result<(), String> {
use crate::DbPool;
pub async fn process_mc_socket(stream: TcpStream, pool: DbPool) -> Result<(), String> {
println!("new client {:?}", stream);
let mut client = Client::create(stream);
let mut client = Client::create(stream, pool);
loop {
tokio::select! {

4
src/models.rs
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@ -11,12 +11,12 @@ use crate::status::ServerStatus;
#[diesel(table_name = dockermcmgr::schema::servers)]
#[diesel(check_for_backend(diesel::pg::Pg))]
pub struct Servers {
pub id: i32,
pub id: i64,
pub name: String,
pub volume_path: String,
pub last_login: Option<SystemTime>,
pub container_id: Option<String>,
pub status: i16,
pub status: ServerStatus,
pub redirect_ip: Option<i32>
}

4
src/rpc/socket.rs
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@ -1,6 +1,8 @@
use std::io;
use tokio::net::TcpStream;
use crate::DbPool;
/*
* request_format :
@ -16,6 +18,6 @@ use tokio::net::TcpStream;
* - data: json object containing the response data
*/
pub async fn process_rpc_socket(_stream: TcpStream) -> io::Result<()> {
pub async fn process_rpc_socket(_stream: TcpStream, _pool: DbPool) -> io::Result<()> {
panic!("not implemented");
}

2
src/schema.rs
View File

@ -2,7 +2,7 @@
diesel::table! {
servers (id) {
id -> Int4,
id -> Int8,
#[max_length = 255]
name -> Varchar,
#[max_length = 255]

56
src/status.rs
View File

@ -1,39 +1,37 @@
use serde::{Deserialize, Serialize};
use diesel::deserialize::{self, FromSql, FromSqlRow};
use diesel::pg::PgValue;
use diesel::expression::AsExpression;
use diesel::pg::Pg;
use diesel::serialize::{self, ToSql, Output};
use diesel::sql_types::SmallInt;
use std::io::Write;
#[derive(Clone, Copy, PartialEq, Eq, Serialize, Deserialize, diesel::expression::AsExpression, diesel::deserialize::FromSqlRow)]
#[diesel(sql_type = diesel::sql_types::SmallInt)]
#[derive(Debug, Clone, Copy, PartialEq, Eq, AsExpression, FromSqlRow, serde::Serialize, serde::Deserialize)]
#[diesel(sql_type = SmallInt)]
pub enum ServerStatus {
Archived,
Stopped,
Stopping,
Starting,
Running,
Unknown,
Archived = 0,
Stopped = 1,
Stopping = 2,
Starting = 3,
Running = 4,
Unknown = 5,
}
impl<DB: diesel::backend::Backend> diesel::serialize::ToSql<diesel::sql_types::SmallInt, DB> for ServerStatus
where
<DB as diesel::backend::Backend>::RawValue: for<'a> diesel::serialize::ToSql<diesel::sql_types::SmallInt, DB<'a>> + ?Sized,
{
fn to_sql<'b>(&'b self, out: &mut diesel::serialize::Output<'b, '_, DB>) -> diesel::serialize::Result<diesel::serialize::IsNull> {
let val = match self {
ServerStatus::Archived => 0i16,
ServerStatus::Stopped => 1i16,
ServerStatus::Stopping => 2i16,
ServerStatus::Starting => 3i16,
ServerStatus::Running => 4i16,
ServerStatus::Unknown => -1i16,
};
diesel::serialize::ToSql::<diesel::sql_types::SmallInt, DB>::to_sql(&val, out)
impl ToSql<SmallInt, Pg> for ServerStatus {
fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> serialize::Result {
let val = *self as i16;
out.write_all(&val.to_be_bytes())?;
Ok(serialize::IsNull::No)
}
}
impl<DB: diesel::backend::Backend> diesel::deserialize::FromSql<diesel::sql_types::SmallInt, DB> for ServerStatus
where
<DB as diesel::backend::Backend>::RawValue: for<'a> diesel::deserialize::FromSql<'a, diesel::sql_types::SmallInt, DB> + ?Sized,
{
fn from_sql(bytes: <DB as diesel::backend::Backend>::RawValue<'_>) -> diesel::deserialize::Result<Self> {
let val = i16::from_sql(bytes)?;
impl FromSql<SmallInt, Pg> for ServerStatus {
fn from_sql(value: PgValue<'_>) -> deserialize::Result<Self> {
let bytes = value.as_bytes();
if bytes.len() != 2 {
return Err("Invalid length for i16".into());
}
let val = i16::from_be_bytes([bytes[0], bytes[1]]);
match val {
0 => Ok(ServerStatus::Archived),
1 => Ok(ServerStatus::Stopped),