feat: add Server header middleware, bump version to v0.4.0

Cargo.lock

@@ -1809,7 +1809,7 @@ version = "0.1.1"
 
 [[package]]
 name = "pacman-server"
-version = "0.3.2"
+version = "0.4.0"
 dependencies = [
  "async-trait",
  "axum",

pacman-server/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pacman-server"
-version = "0.3.2"
+version = "0.4.0"
 authors.workspace = true
 edition.workspace = true
 rust-version = "1.86.0"

pacman-server/README.md

@@ -7,12 +7,20 @@ This crate is a webserver that hosts an OAuth login and leaderboard API for the
 ## Features
 
 - [x] Axum Webserver
+  - [x] Health Check
+  - [ ] Inbound Rate Limiting
+  - [ ] Outbound Rate Limiting
+  - [ ] Provider Circuit Breaker
 - [x] Database
 - [x] OAuth
   - [x] Discord
   - [x] GitHub
-  - [ ] Google (?)
+  - [ ] Google
-- [ ] Leaderboard API
+- [ ] Leaderboard
+  - [ ] Score Submission
+  - [ ] Score Listings
+    - [ ] Pagination
+    - [ ] Global / Daily
 - [ ] Name Restrictions & Flagging
 - [ ] Avatars
   - [ ] 8-bit Conversion

pacman-server/src/main.rs

@@ -19,6 +19,9 @@ use tokio::signal::unix::{signal, SignalKind};
 use tokio::sync::{watch, Notify};
 use tracing::{info, trace, warn};
 
+// Constant value for the Server header: "<crate>/<version>"
+const SERVER_HEADER_VALUE: &str = concat!(env!("CARGO_PKG_NAME"), "/", env!("CARGO_PKG_VERSION"));
+
 #[tokio::main]
 async fn main() {
     // Load environment variables
@@ -60,7 +63,8 @@ async fn main() {
         .route("/logout", get(routes::logout_handler))
         .route("/profile", get(routes::profile_handler))
         .with_state(app_state.clone())
-        .layer(CookieLayer::default());
+        .layer(CookieLayer::default())
+        .layer(axum::middleware::from_fn(inject_server_header));
 
     info!(%addr, "Starting HTTP server bind");
     let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
@@ -172,3 +176,15 @@ async fn shutdown_signal() -> Instant {
         _ = sigterm => { Instant::now() }
     }
 }
+
+async fn inject_server_header(
+    req: axum::http::Request<axum::body::Body>,
+    next: axum::middleware::Next,
+) -> Result<axum::response::Response, axum::http::StatusCode> {
+    let mut res = next.run(req).await;
+    res.headers_mut().insert(
+        axum::http::header::SERVER,
+        axum::http::HeaderValue::from_static(SERVER_HEADER_VALUE),
+    );
+    Ok(res)
+}