flakage

flake.nix

@@ -15,7 +15,7 @@
     nixpkgs,
     flake-utils,
     fenix,
-    crane
+    crane,
   }:
     flake-utils.lib.eachDefaultSystem
     (
@@ -30,10 +30,12 @@
           strictDeps = true;
 
           nativeBuildInputs = with pkgs; [pkg-config cmake];
-          buildInputs = with pkgs; [
+          buildInputs = with pkgs;
+            [
               openssl
               zlib-ng
-          ] ++ lib.optionals stdenv.isDarwin [
+            ]
+            ++ lib.optionals stdenv.isDarwin [
               libiconv
             ];
         };
@@ -47,9 +49,66 @@
             ];
           };
           formatter = pkgs.alejandra;
-          packages.default = craneLib.buildPackage (commonArgs // {
+          packages.default = craneLib.buildPackage (commonArgs
+            // {
               cargoArtifacts = craneLib.buildDepsOnly commonArgs;
             });
+          nixosModules.default = with lib; { config, ... }: {
+            options.services.smo-server = {
+              enable = mkEnableOption "a game server for Super Mario Odyssey Online";
+              user = mkOption {
+                type = lib.types.string;
+                description = "The user to start the server with";
+              };
+              enableFaker = mkOption {
+                type = lib.types.bool;
+                default = false;
+                example = true;
+                description = "Whether to enable the test bot for solo development.";
+              };
+              tcpPort = mkOption {
+                type = lib.types.port;
+                default = 1027;
+                description = "The TCP port to host the server on";
+              };
+              udpPort = mkOption {
+                type = lib.types.port;
+                default = 1027;
+                description = "The UDP port to host the server on";
+              };
+              proximity = {
+                type = lib.types.attrs;
+                port = {
+                  type = lib.types.port;
+                  example = 4433;
+                  description = "The UDP port to host the proximity chat server on";
+                };
+                certPath = {
+                  type = lib.types.path;
+                  example = "cert.pem";
+                  description = "The certificate used for encrypting the WebTransport stream";
+                };
+                keyPath = {
+                  type = lib.types.path;
+                  example = "cert.pem";
+                  description = "The certificate used for encrypting the WebTransport stream";
+                };
+              };
+            };
+            config = mkIf config.services.smo-server.enable {
+              systemd.services.smo-server = with services.smo-server; {
+                wantedBy = ["multi-user.target"];
+                after = ["network.target"];
+                description = "Start smo-server";
+                serviceConfig = {
+                  WorkingDirectory = "${packages.default.outPath}";
+                  Type = "simple";
+                  ExecStart = let proxRes = 5;
+                    in ''${packages.default.outPath}/bin/smo-server -t ${tcpPort} -u ${udpPort} ${proxRes}'';
+                };
+              };
+            };
+          };
         }
     );
 }

src/main.rs

@@ -39,17 +39,18 @@ pub fn manager() -> &'static Address<Manager> {
 }
 
 #[derive(clap::Parser)]
+#[command(about = "A game server for Super Mario Odyssey Online")]
 struct Arguments {
   #[arg(short, long, default_value_t = 1027)]
   tcp_port: u16,
   #[arg(short, long, default_value_t = 1027)]
   udp_port: u16,
-  #[arg(short, long, default_value_t = 4433)]
+  #[arg(short, long, requires = "prox_cert", requires = "prox_key")]
-  prox_port: u16,
+  prox_port: Option<u16>,
-  #[arg(long, default_value = "./cert.pem")]
+  #[arg(long)]
-  prox_cert: PathBuf,
+  prox_cert: Option<PathBuf>,
-  #[arg(long, default_value = "./key.pem")]
+  #[arg(long)]
-  prox_key: PathBuf,
+  prox_key: Option<PathBuf>,
   #[arg(long)]
   enable_faker: bool,
 }

src/server/mod.rs

@@ -22,22 +22,32 @@ fn listeners() -> &'static RwLock<HashMap<UuidString, Address<ProximityPlayer>>>
   &LISTENERS
 }
 
-pub async fn web_main(port: u16, cert: PathBuf, key: PathBuf) -> Address<Manager> {
+pub async fn web_main(port: Option<u16>, cert: Option<PathBuf>, key: Option<PathBuf>) -> Address<Manager> {
   let span = info_span!("prox");
+  let endpoint = if let Some(port) = port {
+    let (cert, key) = (cert.unwrap(), key.unwrap()); // guarded and enforced to be fine by clap
     info!(parent: &span, "reading pems from {{ cert: {cert:?}, key: {key:?} }}");
     let identity = Identity::load_pemfiles(cert, key).await.expect("failed to create identity from proximity pems");
     let config = ServerConfig::builder().with_bind_default(port).with_identity(identity).build();
     let endpoint = Endpoint::server(config).expect("failed to build proximity endpoint");
 
-  info!("listening on webtransport port {port}");
+    info!(parent: &span, "listening on webtransport port {port}");
+    Some(endpoint)
+  } else {
+    info!(parent: &span, "no port specified, not starting server");
+
+    None
+  };
 
   let manager = xtra::spawn_tokio(
     Manager {
       players: HashMap::new(),
       next_id: 0,
     },
-    Mailbox::bounded(8),
+    Mailbox::bounded(32),
   );
+
+  if let Some(endpoint) = endpoint {
     tokio::spawn({
       let manager = manager.clone();
       async move {
@@ -49,6 +59,7 @@ pub async fn web_main(port: u16, cert: PathBuf, key: PathBuf) -> Address<Manager
       }
       .instrument(span)
     });
+  }
   manager
 }
 

src/server/prox.rs

@@ -33,7 +33,6 @@ impl ProximityPlayer {
         );
 
         let (mut send, mut recv) = connection.accept_bi().await.expect("failed to start channel");
-        trace!("getting uuid and name");
         let mut id = UuidString::new_zeroed();
         recv.read_exact(id.as_mut_bytes()).await.expect("failed to read uuid");
         let mut name = String::new_zeroed();
@@ -46,7 +45,7 @@ impl ProximityPlayer {
 
         send.write_u8(state.len() as u8).await.expect("failed to write length");
         for player in state.values() {
-          trace!("sending player {player:?}");
+          trace!(parent: &span, "sending player {player:?}");
           send.write_all(player.as_bytes()).await.expect("failed to write player");
         }
 
@@ -78,7 +77,6 @@ impl ProximityPlayer {
             loop {
               match packet::Event::deserialize(&mut recv).await {
                 Ok(event) => {
-                  info!("deserialized event: {event:?}");
                   let _ = address.send(event).detach().await;
                 }
                 Err(error) => {
@@ -359,7 +357,6 @@ impl Handler<ChangedStage> for ProximityPlayer {
   type Return = ();
 
   async fn handle(&mut self, message: ChangedStage, ctx: &mut xtra::Context<Self>) -> Self::Return {
-    warn!("todo: implement changed stage");
     let event = packet::Packet {
       kind: packet::Kind::StageChanged,
       data: packet::StageChanged {
@@ -381,7 +378,6 @@ pub mod packet {
   use anyhow::bail;
   use newtype_enum::newtype_enum;
   use tokio::io::{AsyncReadExt, AsyncWriteExt};
-  use tracing::info;
   use wtransport::{RecvStream, SendStream};
   use zerocopy::{FromZeros, Immutable, IntoBytes};
   use Event_variants::{Answer, Candidate, Offer, TargetChanged};
@@ -478,8 +474,6 @@ pub mod packet {
         Ok(())
       }
 
-      info!("writing event: {self:?}");
-
       match self {
         Self::Offer(offer) => {
           send.write_u8(Kind::Offer as u8).await?;
@@ -504,7 +498,6 @@ pub mod packet {
     pub async fn deserialize(recv: &mut RecvStream) -> anyhow::Result<Self> {
       async fn read_string(recv: &mut RecvStream) -> anyhow::Result<StdString> {
         let size = recv.read_u32_le().await?;
-        info!("string size: {size}");
         let mut data = vec![0; size as usize];
         recv.read_exact(&mut data).await?;
         Ok(StdString::from_utf8(data)?)
@@ -512,12 +505,10 @@ pub mod packet {
       async fn read_fixed_string<const N: usize>(recv: &mut RecvStream) -> anyhow::Result<String<N>> {
         let mut str = String::new_zeroed();
         recv.read_exact(str.as_mut_bytes()).await?;
-        info!("read id: {str}");
         Ok(str)
       }
 
       let kind = recv.read_u8().await?;
-      info!("reading kind: {kind}");
       let event = match kind {
         0 => Self::Offer(Offer {
           id: read_fixed_string(recv).await?,