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|
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
use std::sync::Arc;
use std::time::Duration;
use anyhow::Result;
use mcproto_rs::protocol::State;
use mcproto_rs::Serializer;
use mcproto_rs::status::{StatusPlayersSpec, StatusSpec, StatusVersionSpec};
use mcproto_rs::types::{BytesSerializer, Chat, IntPosition, ItemStack, RemainingBytes, Vec3};
use mcproto_rs::uuid::UUID4;
use mcproto_rs::v1_19_3::{EntityEventSpec, InitializeWorldBorderSpec, KeepAliveClientBoundSpec, PluginMessageSpec, SetContainerContentSpec, SetDefaultSpawnPositionSpec};
use mcproto_rs::v1_19_3::{HandshakeNextState, LoginSuccessSpec, Packet761, Packet761Kind, PingRequestSpec, PingResponseSpec, SetHeldItemClientSpec, StatusResponseSpec};
use tokio;
use tokio::net::TcpStream;
use tokio::signal::unix::{signal, SignalKind};
use tokio::sync::broadcast;
use tokio::sync::broadcast::Receiver;
use tokio::task::JoinHandle;
use crate::connect::MinecraftClient;
use crate::world::DebugWorld;
pub mod connect;
pub mod nbtdsl;
pub mod player;
pub mod convention;
pub mod world;
#[tokio::main]
async fn main() -> Result<()> {
let (shutdown_send, _recv) = broadcast::channel::<()>(1);
let bind = tokio::net::TcpListener::bind(SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), 25565)).await?;
let server_rx = shutdown_send.subscribe();
let server_handle = tokio::spawn(async {
listener(bind, server_rx).await;
()
});
println!("Awaiting shutdown request");
signal(SignalKind::interrupt())?.recv().await;
println!("Shutdown request detected");
shutdown_send.send(())?;
server_handle.await?;
Ok(())
}
async fn listener(listener: tokio::net::TcpListener, mut receiver: Receiver<()>) {
println!("Starting server");
let mut handles: Vec<JoinHandle<()>> = Vec::new();
loop {
let x: Option<(TcpStream, SocketAddr)> = tokio::select! {
_ = receiver.recv() => {
break;
}
conn = listener.accept() => { conn.ok() }
};
let (stream, from) = match x {
None => { continue }
Some(y) => { y }
};
println!("Connection accepted from {}", from);
let client = MinecraftClient::from_stream(stream);
let handle = tokio::spawn(async {
if let Err(x) = handle_conn(client).await {
println!("Error: {:?}", x);
}
});
handles.push(handle);
}
println!("Shutdown started");
for x in &handles {
x.abort();
}
/*
TODO: proper kicks so that we can just join
for x in handles {
match x.await {
Ok(_) => {}
Err(_) => {
println!("Failed to join server during exit!")
}
};
}*/
}
async fn handle_conn(mut client: MinecraftClient) -> Result<()> {
let hs = assert_packet!(Handshake, client, "Missing packet");
if hs.next_state == HandshakeNextState::Login {
return handle_login(client).await;
} else if hs.next_state == HandshakeNextState::Status {
return handle_status(client).await;
} else {
anyhow::bail!("Unknown next status")
}
}
async fn handle_login(mut client: MinecraftClient) -> Result<()> {
client.set_state(State::Login)?;
let loginstart = assert_packet!(
LoginStart,
client
.read_next_packet()
.await?
.ok_or(anyhow::anyhow!("Missing packet"))?
);
println!("Login: {:?}", loginstart);
let uuid = UUID4::random();
client
.send_packet(Packet761::LoginSuccess(LoginSuccessSpec {
uuid,
username: loginstart.name.clone(),
properties: vec![].into(),
}))?;
client.set_state(State::Play)?;
let mut player = player::Player::new(client, loginstart.name.clone(), Vec3 {
x: 0.0,
y: 0.0,
z: 0.0,
}, 0.0, 0.0);
let universe = Arc::new(convention::Universe::default_meta(-64, 256));
let world = DebugWorld::new(universe.clone());
player.send_packet(universe.create_login_play_packet())?;
let client_information = await_packet!(ClientInformation, player.client);
println!("Client Information: {:?}", client_information);
player.send_packet(Packet761::SetHeldItemClient(SetHeldItemClientSpec {
selected_slot: 0,
}))?;
player.send_all_packets(universe.create_tags_and_recipes())?;
player.send_packet(Packet761::EntityEvent(EntityEventSpec {
entity_id: 0,
entity_status: 24 /* OP permission level = 0 */,
}))?;
player.send_packet(universe.empty_commands())?;
player.send_packet(universe.init_empty_recipe_book())?;
player.send_packet(player.create_teleport_packet())?;
player.synchronize_center_chunk()?;
player.send_all_nearby_chunks(&world).await?;
player.send_packet(Packet761::InitializeWorldBorder(InitializeWorldBorderSpec {
x: 0.0,
z: 0.0,
old_diameter: 10000000.0,
new_diameter: 10000000.0,
speed: 0.into(),
portal_teleport_boundary: 29999984.into(),
warning_blocks: 0.into(),
warning_time: 0.into(),
}))?;
player.send_packet(Packet761::SetDefaultSpawnPosition(SetDefaultSpawnPositionSpec {
location: IntPosition {
x: 0,
y: 0,
z: 0,
},
angle: 0.0,
}))?;
player.send_packet(player.create_teleport_packet())?;
player.send_packet(Packet761::SetContainerContent(SetContainerContentSpec {
window_id: 0,
state_id: 0.into(),
slot_data: vec![Some(ItemStack {
item_id: 1.into(),
item_count: 1,
nbt: None,
}); 45].into(),
carried_item: None,
}))?;
let mut i = 0;
loop {
player.send_packet(Packet761::KeepAliveClientBound(KeepAliveClientBoundSpec {
keep_alive_id: i,
}))?;
if i == 2 {
let mut brand_encoder = BytesSerializer::default();
brand_encoder.serialize_other(&String::from("MGASI"))?;
player.send_packet(Packet761::PluginMessage(PluginMessageSpec {
channel: "minecraft:brand".to_string(),
data: RemainingBytes { data: brand_encoder.into_bytes() },
}))?;
}
i += 1;
tokio::time::sleep(Duration::from_secs(10)).await;
}
}
async fn handle_status(mut client: MinecraftClient) -> Result<()> {
client.set_state(State::Status)?;
loop {
match client
.read_next_packet()
.await?
.ok_or(anyhow::anyhow!("Missing packet"))?
{
Packet761::StatusRequest(_) => {
client.send_packet(Packet761::StatusRespone(StatusResponseSpec {
response: StatusSpec {
version: Some(StatusVersionSpec {
name: "1.19.3 mgasi".to_string(),
protocol: 761,
}),
players: StatusPlayersSpec {
max: 100,
online: 0,
sample: vec![],
},
description: Chat::from_text("hehehe"),
favicon: None,
},
}))?;
}
Packet761::PingRequest(PingRequestSpec { payload }) => {
client.send_packet(Packet761::PingResponse(PingResponseSpec { payload }))?;
return Ok(());
}
_ => anyhow::bail!("Unexpected packet during status communication"),
}
}
}
|
