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Aubrey 2024-12-16 01:28:13 -06:00
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
[[package]]
name = "windows_i686_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
[[package]]
name = "windows_x86_64_gnu"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
[[package]]
name = "windows_x86_64_gnullvm"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
[[package]]
name = "winnow"
version = "0.5.40"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f593a95398737aeed53e489c785df13f3618e41dbcd6718c6addbf1395aa6876"
dependencies = [
"memchr",
]
[[package]]
name = "xtra"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e1fd2fa83096d6c2e5eae3dcd265d16bb084abbe1391c38baec036a6cc1b7c7c"
dependencies = [
"catty",
"event-listener",
"futures-core",
"futures-util",
"pin-project-lite",
"spin",
"tokio",
"xtra-macros",
]
[[package]]
name = "xtra-macros"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6dfd68acdfa4e363b4dad688a87d5ed462cfb9498398c66520c7dab507dbc591"
dependencies = [
"proc-macro2",
"quote",
"syn 1.0.109",
]
[[package]]
name = "zerocopy"
version = "0.8.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "67914ab451f3bfd2e69e5e9d2ef3858484e7074d63f204fd166ec391b54de21d"
dependencies = [
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.8.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7988d73a4303ca289df03316bc490e934accf371af6bc745393cf3c2c5c4f25d"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.90",
]

14
Cargo.toml Normal file
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@ -0,0 +1,14 @@
[package]
name = "smo-server"
version = "0.1.0"
edition = "2021"
[dependencies]
anyhow = "1.0.94"
heapless = "0.8.0"
newtype-enum = { git = "https://github.com/mgjm/newtype-enum", version = "0.1.0" }
tokio = { version = "1.42.0", features = ["rt", "macros", "net", "sync", "rt-multi-thread", "io-util", "io-std"] }
tracing = "0.1.41"
tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
xtra = { version = "0.6.0", features = ["macros", "tokio"] }
zerocopy = { version = "0.8.13", features = ["derive"] }

100
flake.lock Normal file
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@ -0,0 +1,100 @@
{
"nodes": {
"fenix": {
"inputs": {
"nixpkgs": [
"nixpkgs"
],
"rust-analyzer-src": "rust-analyzer-src"
},
"locked": {
"lastModified": 1734244366,
"narHash": "sha256-5sH3pvXDP9ifPGiuFu9OkUSw0hnL2BAabdkXogsn3AU=",
"owner": "nix-community",
"repo": "fenix",
"rev": "e61b6fb56bc8471ad64f8d3eb9dde5b6e0d7ffcd",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "fenix",
"type": "github"
}
},
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1731533236,
"narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1734119587,
"narHash": "sha256-AKU6qqskl0yf2+JdRdD0cfxX4b9x3KKV5RqA6wijmPM=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "3566ab7246670a43abd2ffa913cc62dad9cdf7d5",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"fenix": "fenix",
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs"
}
},
"rust-analyzer-src": {
"flake": false,
"locked": {
"lastModified": 1734121833,
"narHash": "sha256-EZtwXmh9P9FnoXKfbjGxyWksjrjPB4HES2HVIV+STNg=",
"owner": "rust-lang",
"repo": "rust-analyzer",
"rev": "fc18d263aa95f7d6de8174bd4c6663dfe865e6d5",
"type": "github"
},
"original": {
"owner": "rust-lang",
"ref": "nightly",
"repo": "rust-analyzer",
"type": "github"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

30
flake.nix Normal file
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{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
fenix = {
url = "github:nix-community/fenix";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs = { self, nixpkgs, flake-utils, fenix }:
flake-utils.lib.eachDefaultSystem
(system:
let
overlays = [ fenix.overlays.default ];
pkgs = import nixpkgs {
inherit system overlays;
};
in
with pkgs;
{
devShells.default = mkShell {
buildInputs = [
pkgs.fenix.stable.completeToolchain
pkg-config
openssl
];
};
}
);
}

38
src/main.rs Normal file
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pub mod packet;
pub mod player;
use std::{collections::HashMap, sync::LazyLock};
use player::PlayerActor;
use tokio::{net::TcpListener, sync::RwLock};
use tracing::{error, info};
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
use xtra::Address;
pub fn clients() -> &'static RwLock<HashMap<u128, Address<PlayerActor>>> {
static CLIENTS: LazyLock<RwLock<HashMap<u128, Address<PlayerActor>>>> = LazyLock::new(|| RwLock::default());
&CLIENTS
}
#[tokio::main]
async fn main() {
//.with(EnvFilter::from_default_env())
tracing_subscriber::registry().with(tracing_subscriber::fmt::layer()).init();
let tcp = TcpListener::bind("0.0.0.0:1027").await.unwrap();
info!("listening on port 1027");
loop {
match tcp.accept().await {
Ok((stream, addr)) => {
PlayerActor::new_connection(stream, addr);
}
Err(error) => {
error!("failed to handle connection: {error:?}");
}
}
}
// let socket = Arc::new(UdpSocket::bind("0.0.0.0:1027").await.unwrap());
// let mut packet = [0u8; 1024];
}

213
src/packet.rs Normal file
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use core::str;
use std::{
ffi::CStr,
fmt::{Debug, Display},
};
use anyhow::{bail, Context};
use newtype_enum::newtype_enum;
use zerocopy::{
FromBytes, FromZeros, Immutable, IntoBytes, KnownLayout, Unaligned,
};
#[derive(Debug, Clone, Copy, FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
pub struct PacketHeader {
pub user_id: u128,
pub kind: PacketKind,
pub size: u16,
}
#[derive(Debug, Clone, Copy, FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(u16)]
pub enum PacketKind {
Unknown = 0,
Init = 1,
Player = 2,
Cap = 3,
Game = 4,
Tag = 5,
Connect = 6,
Disconnect = 7,
Costume = 8,
Shine = 9,
Capture = 10,
ChangeStage = 11,
Command = 12,
UdpInit = 13,
HolePunch = 14
}
const COSTUME_NAME_SIZE: usize = 0x20;
const CAP_ANIM_SIZE: usize = 0x30;
const STAGE_GAME_NAME_SIZE: usize = 0x40;
const STAGE_CHANGE_NAME_SIZE: usize = 0x30;
const STAGE_ID_SIZE: usize = 0x10;
const CLIENT_NAME_SIZE: usize = COSTUME_NAME_SIZE;
#[derive(Debug)]
pub struct Packet {
pub user_id: u128,
pub data: PacketData,
}
#[newtype_enum]
#[derive(Debug)]
pub enum PacketData {
Unknown(Vec<u8>),
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Init {
pub max_players: u16,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Player {
position: [f32; 3],
rotation: [f32; 4],
weights: [f32; 6],
action: u16,
subaction: u16,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Cap {
position: [f32; 3],
rotation: [f32; 4],
out: Bool,
anim: String<CAP_ANIM_SIZE>,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Game {
is_2d: u8,
scenario_num: u8,
stage: String<STAGE_GAME_NAME_SIZE>,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Tag {
update_type: u8,
is_it: Bool,
seconds: u8,
minutes: u16,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Connect {
kind: ConnectionKind,
max_player: u16,
client_name: String<CLIENT_NAME_SIZE>,
},
Disconnect,
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Costume {
body_name: String<COSTUME_NAME_SIZE>,
cap_name: String<COSTUME_NAME_SIZE>,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Shine {
shine_id: i32,
is_grand: Bool,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
Capture {
model: String<COSTUME_NAME_SIZE>,
},
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
ChangeStage {
stage: String<STAGE_CHANGE_NAME_SIZE>,
id: String<STAGE_ID_SIZE>,
scenario: i8,
sub_scenario: u8,
},
Command,
#[derive(FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(C, packed)]
UdpInit {
port: u16
},
HolePunch
}
pub enum TagUpdateBit {
Time = 0,
State = 1,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, FromZeros, IntoBytes, KnownLayout, Immutable)]
#[repr(u32)]
pub enum ConnectionKind {
New = 0,
Old = 1,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, FromBytes, IntoBytes, KnownLayout, Immutable, Unaligned)]
#[repr(C)]
pub struct Bool(u8);
impl Bool {
pub fn new(value: bool) -> Bool {
Bool(if value { 1 } else { 0 })
}
pub fn get(&self) -> bool {
self.0 != 0
}
}
impl From<bool> for Bool {
fn from(value: bool) -> Self {
Bool::new(value)
}
}
impl From<Bool> for bool {
fn from(value: Bool) -> Self {
value.get()
}
}
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, FromBytes, IntoBytes, KnownLayout, Immutable, Unaligned)]
#[repr(C)]
pub struct String<const N: usize>([u8; N]);
impl<const N: usize> String<N> {
pub fn to_str(&self) -> anyhow::Result<&str> {
let cstr = CStr::from_bytes_until_nul(&self.0).context("interpreting bytes as c-string")?;
cstr.to_str().context("verifying string has utf-8")
// let str = str::from_utf8(&self.0).context("verifying string has utf-8")?;
// Ok(str.trim_end_matches('\0'))
}
pub fn assert_valid(&self) -> anyhow::Result<()> {
self.to_str().map(drop)
}
}
impl<const N: usize> TryFrom<&str> for String<N> {
type Error = anyhow::Error;
fn try_from(value: &str) -> Result<Self, Self::Error> {
let mut buf = [0; N];
if value.len() > N {
bail!("seggs")
}
value.write_to_prefix(&mut buf).unwrap();
Ok(Self(buf))
}
}
impl<const N: usize> Display for String<N> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
Display::fmt(self.to_str().expect("failed to parse string"), f)
}
}
impl<const N: usize> Debug for String<N> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
Debug::fmt(self.to_str().expect("failed to parse string"), f)
}
}

183
src/player.rs Normal file
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use std::{net::SocketAddr, time::Duration};
use anyhow::{bail, Context};
use tokio::{
io::{AsyncReadExt, AsyncWriteExt, BufReader, BufWriter},
net::{
tcp::{OwnedReadHalf, OwnedWriteHalf},
TcpStream,
}, sync::mpsc, time::Instant,
};
use tracing::{info, info_span, trace, Instrument};
use zerocopy::{IntoBytes, TryFromBytes};
use crate::packet::{
Packet, PacketData,
PacketData_variants::{Cap, Command, Connect, Disconnect, HolePunch, Init, Player},
PacketHeader, PacketKind, String,
};
// #[derive(Actor)]
pub struct PlayerActor {
write_half: BufWriter<OwnedWriteHalf>,
}
impl PlayerActor {
pub async fn read_packet(reader: &mut BufReader<OwnedReadHalf>) -> anyhow::Result<Packet> {
let mut header = [0; size_of::<PacketHeader>()];
reader.read_exact(&mut header).await.context("reading data")?;
let Ok(header) = PacketHeader::try_read_from_bytes(&header) else {
bail!("parsing packet buffer")
};
macro_rules! read_data {
($read: expr, $size: expr, $ty: ident $(, $field:ident => $assert: expr)*) => {{
async fn read_data(reader: &mut BufReader<OwnedReadHalf>, size: u16) -> anyhow::Result<PacketData> {
type T = crate::packet::PacketData_variants::$ty;
let size = size as usize;
if size < size_of::<T>() {
bail!("buffer too small for packet: expected {}, got {size}", size_of::<T>())
}
let mut data = [0; u16::MAX as usize];
reader.read_exact(&mut data[..size]).await.context("reading data")?;
let packet_data = match T::try_read_from_bytes(&data[..size_of::<T>()]) {
Ok(data) => data,
Err(error) => {
bail!(concat!("interpreting ", stringify!($ty), ": {:?}"), error)
}
};
$(
{
let $field = packet_data.$field;
$assert
}?;
)*
Ok(PacketData::$ty(packet_data))
}
type _FixIntellisense = crate::packet::PacketData_variants::$ty;
read_data($read, $size).await?
}};
}
let data: PacketData = match header.kind {
PacketKind::Unknown => {
let mut data = vec![0; header.size.into()];
reader.read_exact(&mut data).await.context("reading unknown data")?;
PacketData::Unknown(data)
}
PacketKind::Init => read_data!(reader, header.size, Init),
PacketKind::Player => read_data!(reader, header.size, Player),
PacketKind::Cap => read_data!(reader, header.size, Cap, anim => anim.assert_valid()),
PacketKind::Game => read_data!(reader, header.size, Game, stage => stage.assert_valid()),
PacketKind::Tag => read_data!(reader, header.size, Tag),
PacketKind::Connect => read_data!(reader, header.size, Connect),
PacketKind::Disconnect => PacketData::Disconnect(Disconnect),
PacketKind::Costume => read_data!(reader, header.size, Costume),
PacketKind::Shine => read_data!(reader, header.size, Shine),
PacketKind::Capture => read_data!(reader, header.size, Capture),
PacketKind::ChangeStage => read_data!(reader, header.size, ChangeStage),
PacketKind::Command => PacketData::Command(Command),
PacketKind::UdpInit => read_data!(reader, header.size, UdpInit),
PacketKind::HolePunch => PacketData::HolePunch(HolePunch),
};
Ok(Packet {
user_id: header.user_id,
data,
})
}
pub async fn write_packet(writer: &mut BufWriter<OwnedWriteHalf>, id: u128, data: PacketData) -> anyhow::Result<()> {
let (kind, slice) = match &data {
PacketData::Unknown(vec) => {
if vec.len() >= (u16::MAX as usize) {
bail!("unknown packet vec too large")
}
(PacketKind::Unknown, vec.as_slice())
}
PacketData::Init(init) => (PacketKind::Init, init.as_bytes()),
PacketData::Player(player) => (PacketKind::Player, player.as_bytes()),
PacketData::Cap(cap) => (PacketKind::Cap, cap.as_bytes()),
PacketData::Game(game) => (PacketKind::Game, game.as_bytes()),
PacketData::Tag(tag) => (PacketKind::Tag, tag.as_bytes()),
PacketData::Connect(connect) => (PacketKind::Connect, connect.as_bytes()),
PacketData::Disconnect(..) => (PacketKind::Disconnect, [].as_slice()),
PacketData::Costume(costume) => (PacketKind::Costume, costume.as_bytes()),
PacketData::Shine(shine) => (PacketKind::Shine, shine.as_bytes()),
PacketData::Capture(capture) => (PacketKind::Capture, capture.as_bytes()),
PacketData::ChangeStage(change_stage) => (PacketKind::ChangeStage, change_stage.as_bytes()),
PacketData::Command(..) => (PacketKind::Command, [].as_slice()),
PacketData::UdpInit(udp_init) => (PacketKind::UdpInit, udp_init.as_bytes()),
PacketData::HolePunch(..) => (PacketKind::HolePunch, [].as_slice()),
};
writer
.write_all(
PacketHeader {
kind,
size: slice.len() as u16,
user_id: id,
}
.as_bytes(),
)
.await
.context("writing header")?;
writer.write_all(slice).await.context("writing data")?;
writer.flush().await.context("flushing writer")
}
pub fn new_connection(stream: TcpStream, addr: SocketAddr) {
tokio::spawn(async move {
info!("accepted connection from {addr}");
let (reader, writer) = stream.into_split();
let mut reader = BufReader::new(reader);
let mut writer = BufWriter::new(writer);
let packet = Self::read_packet(&mut reader).await.unwrap();
let Packet {
user_id,
data: PacketData::Connect(connect),
} = packet
else {
tracing::error!("not a valid player!");
return;
};
let bot_id = user_id + 1;
Self::write_packet(&mut writer, user_id, PacketData::Init(Init { max_players: 8 }))
.await
.expect("msfrarausfhsdagsdgkog");
Self::write_packet(&mut writer, bot_id, PacketData::Connect(Connect { kind: crate::packet::ConnectionKind::New, client_name: String::try_from("Bot").unwrap(), max_player: 8 }))
.await
.expect("msfrarausfhsdagsdgkog");
let span = info_span!("", player = connect.client_name.to_string());
let (sender, mut receiver) = mpsc::unbounded_channel();
tokio::spawn(async move {
while let Some((instant, packet)) = receiver.recv().await {
tokio::time::sleep_until(instant).await;
Self::write_packet(&mut writer, bot_id, packet).await.unwrap();
}
}.instrument(span.clone()));
async move {
info!("connected {user_id}");
loop {
let packet = Self::read_packet(&mut reader).await.unwrap();
trace!("got packet {packet:?}");
let sender = sender.clone();
tokio::spawn(async move {
let _ = sender.send((Instant::now().checked_add(Duration::from_millis(200)).unwrap(), match packet.data {
PacketData::Player(player) => PacketData::Player(Player {position: [player.position[0], -20., player.position[2]], ..player}),
PacketData::Cap(cap) => PacketData::Cap(Cap {position: [cap.position[0], -20., cap.position[2]], ..cap}),
pass => pass,
}));
});
}
}
.instrument(span)
.await;
});
}
}