add session refresh (not great tho)

Cargo.lock

@@ -390,6 +390,21 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "futures"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23342abe12aba583913b2e62f22225ff9c950774065e4bfb61a19cd9770fec40"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-channel"
 version = "0.3.28"
@@ -406,6 +421,17 @@ version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
 
+[[package]]
+name = "futures-executor"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-intrusive"
 version = "0.4.2"
@@ -417,6 +443,23 @@ dependencies = [
  "parking_lot 0.11.2",
 ]
 
+[[package]]
+name = "futures-io"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
+
+[[package]]
+name = "futures-macro"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.18",
+]
+
 [[package]]
 name = "futures-sink"
 version = "0.3.28"
@@ -435,11 +478,16 @@ version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26b01e40b772d54cf6c6d721c1d1abd0647a0106a12ecaa1c186273392a69533"
 dependencies = [
+ "futures-channel",
  "futures-core",
+ "futures-io",
+ "futures-macro",
  "futures-sink",
  "futures-task",
+ "memchr",
  "pin-project-lite",
  "pin-utils",
+ "slab",
 ]
 
 [[package]]
@@ -708,6 +756,7 @@ dependencies = [
  "chrono",
  "cookie",
  "figment",
+ "futures",
  "serde",
  "serde_json",
  "sqlx",
@@ -1200,6 +1249,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "slab"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6528351c9bc8ab22353f9d776db39a20288e8d6c37ef8cfe3317cf875eecfc2d"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.10.0"

Cargo.toml

@@ -19,6 +19,7 @@ chrono = { version = "0.4", features = ["serde", "clock"] }
 anyhow = "1.0"
 argon2 = { version = "0.5", features = ["std", "alloc"] }
 url = "2.4"
+futures = "0.3"
 
 [profile.dev.package.sqlx-macros]
 opt-level = 3

src/auth/http.rs

@@ -0,0 +1,97 @@
+use anyhow::Result;
+use axum::{
+    async_trait,
+    extract::{FromRequestParts, State},
+    http::{
+        header::{COOKIE, SET_COOKIE},
+        request::Parts,
+        HeaderValue, Request, StatusCode,
+    },
+    middleware::Next,
+    response::Response,
+};
+use chrono::{Duration, Utc};
+use cookie::Cookie;
+use sqlx::{Pool, Postgres};
+use std::sync::Arc;
+use uuid::Uuid;
+
+use crate::{error::AppError, state::AppState};
+
+use super::{session::Session, user::User};
+
+pub const INVALID_SESSION: AppError = AppError::ClientError {
+    status: StatusCode::UNAUTHORIZED,
+    code: "authentication-required",
+    message: "Please log-in and submit a valid session as a cookie",
+};
+
+pub struct RequireSession(pub Session, pub User);
+
+#[async_trait]
+impl FromRequestParts<Arc<AppState>> for RequireSession {
+    type Rejection = AppError<'static>;
+
+    async fn from_request_parts(
+        parts: &mut Parts,
+        state: &Arc<AppState>,
+    ) -> Result<RequireSession, Self::Rejection> {
+        if let Some(cookie) = parts.headers.get(COOKIE) {
+            let (session_id, session_secret) = extract_session_token(cookie)?;
+
+            match Session::find(&state.database, session_id).await? {
+                None => Err(INVALID_SESSION),
+                Some((session, user)) => {
+                    if session.secret != session_secret {
+                        return Err(INVALID_SESSION);
+                    }
+                    if session.expires_at < Utc::now().naive_utc() {
+                        return Err(INVALID_SESSION);
+                    }
+                    Ok(RequireSession(session, user))
+                }
+            }
+        } else {
+            return Err(INVALID_SESSION);
+        }
+    }
+}
+
+fn extract_session_token(header: &HeaderValue) -> Result<(Uuid, String)> {
+    Ok(Session::parse_token(
+        Cookie::parse(header.to_str()?)?.value(),
+    )?)
+}
+
+async fn find_and_refresh(
+    pool: &Pool<Postgres>,
+    session_id: Uuid,
+    duration: Duration,
+) -> Option<Session> {
+    if let Some(Some((session, _))) = Session::find(pool, session_id).await.ok() {
+        session.refresh(pool, duration).await.ok()
+    } else {
+        None
+    }
+}
+
+pub async fn refresh_sessions<B>(
+    State(state): State<Arc<AppState>>,
+    req: Request<B>,
+    next: Next<B>,
+) -> Response {
+    if let Some((session_id, _)) = req
+        .headers()
+        .get(COOKIE)
+        .and_then(|header| extract_session_token(header).ok())
+    {
+        find_and_refresh(
+            &state.database,
+            session_id,
+            Duration::seconds(state.config.session_duration),
+        )
+        .await;
+    }
+
+    next.run(req).await
+}

src/auth/mod.rs

@@ -1,3 +1,4 @@
 pub mod hash;
+pub mod http;
 pub mod session;
 pub mod user;

src/auth/session.rs

@@ -1,28 +1,16 @@
-use std::sync::Arc;
-
 use anyhow::{anyhow, Result};
-use axum::{
-    async_trait,
-    extract::{FromRequestParts, State},
-    http::{header::COOKIE, request::Parts, StatusCode},
-};
+use axum::http::StatusCode;
 use chrono::{Duration, NaiveDateTime, Utc};
 use cookie::Cookie;
 use serde::{Deserialize, Serialize};
 use sqlx::{FromRow, Pool, Postgres};
 use uuid::Uuid;
 
-use crate::{error::AppError, state::AppState};
+use crate::error::AppError;
 
 use super::{hash::random, user::User};
 
-const INVALID_SESSION: AppError = AppError::ClientError {
-    status: StatusCode::UNAUTHORIZED,
-    code: "authentication-required",
-    message: "Please log-in and submit a valid session as a cookie",
-};
-
-const USER_NOT_FOUND: AppError = AppError::ClientError {
+pub const USER_NOT_FOUND: AppError = AppError::ClientError {
     status: StatusCode::UNAUTHORIZED,
     code: "user-not-found",
     message: "The logged-in user was not found",
@@ -123,22 +111,16 @@ impl Session {
 
     pub async fn refresh(self: Self, pool: &Pool<Postgres>, duration: Duration) -> Result<Self> {
         let expires_at = (Utc::now() + duration).naive_utc();
-        let secret = random();
 
         sqlx::query!(
-            "UPDATE sessions SET secret = $1, expires_at = $2 WHERE id = $3 RETURNING id",
-            secret,
+            "UPDATE sessions SET expires_at = $1 WHERE id = $2 RETURNING id",
             expires_at,
             self.id
         )
         .fetch_one(pool)
         .await?;
 
-        Ok(Session {
-            secret,
-            expires_at,
-            ..self
-        })
+        Ok(Session { expires_at, ..self })
     }
 
     pub fn token(self: &Self) -> String {
@@ -161,39 +143,22 @@ impl Session {
             None => Err(USER_NOT_FOUND),
         }
     }
-}
 
-pub struct RequireSession(pub Session, pub User);
+    pub async fn prune_dead(pool: &Pool<Postgres>) -> Result<u64> {
+        let now = Utc::now().naive_utc();
+        let result = sqlx::query!("DELETE FROM sessions WHERE expires_at < $1", now)
+            .execute(pool)
+            .await?;
+        Ok(result.rows_affected())
+    }
 
-#[async_trait]
-impl FromRequestParts<Arc<AppState>> for RequireSession {
-    type Rejection = AppError<'static>;
-
-    async fn from_request_parts(
-        parts: &mut Parts,
-        state: &Arc<AppState>,
-    ) -> Result<RequireSession, Self::Rejection> {
-        if let Some(cookie) = parts.headers.get(COOKIE) {
-            let cookie_str = cookie.to_str()?;
-            let cookie = Cookie::parse(cookie_str)?;
-            let (session_id, session_secret) = Session::parse_token(cookie.value())?;
-
-            let State(state) = State::<Arc<AppState>>::from_request_parts(parts, state).await?;
-
-            match Session::find(&state.database, session_id).await? {
-                None => Err(INVALID_SESSION),
-                Some((session, user)) => {
-                    if session.secret != session_secret {
-                        return Err(INVALID_SESSION);
-                    }
-                    if session.expires_at < Utc::now().naive_utc() {
-                        return Err(INVALID_SESSION);
-                    }
-                    Ok(RequireSession(session, user))
-                }
-            }
-        } else {
-            return Err(INVALID_SESSION);
-        }
+    pub fn cookie(self: &Self, domain: &str, secure: bool) -> String {
+        Cookie::build("session", self.token())
+            .domain(domain)
+            .secure(secure)
+            .http_only(!secure)
+            .path("/")
+            .finish()
+            .to_string()
     }
 }

src/main.rs

@@ -5,8 +5,10 @@ mod roles;
 mod routes;
 mod state;
 
+use crate::{auth::http::refresh_sessions, state::Config};
 use anyhow::Result;
 use axum::{
+    middleware,
     routing::{get, post},
     Router, Server,
 };
@@ -18,8 +20,6 @@ use sqlx::postgres::PgPoolOptions;
 use state::AppState;
 use std::{net::SocketAddr, sync::Arc};
 
-use crate::state::Config;
-
 #[tokio::main]
 async fn main() -> Result<()> {
     tracing_subscriber::fmt::init();
@@ -44,6 +44,10 @@ async fn main() -> Result<()> {
         .route("/me", get(routes::auth::me))
         .route("/pages/:site/:slug", get(routes::content::page))
         .route("/admin/bootstrap", post(routes::admin::bootstrap))
+        .route_layer(middleware::from_fn_with_state(
+            shared_state.clone(),
+            refresh_sessions,
+        ))
         .with_state(shared_state);
 
     tracing::debug!("listening on {}", addr);

src/routes/auth.rs

@@ -5,17 +5,12 @@ use axum::{
     Json,
 };
 use chrono::Duration;
-use cookie::Cookie;
 use serde::Deserialize;
 use serde_json::json;
 use std::sync::Arc;
 
 use crate::{
-    auth::{
-        hash::verify,
-        session::{RequireSession, Session},
-        user::User,
-    },
+    auth::{hash::verify, http::RequireSession, session::Session, user::User},
     error::AppError,
     state::AppState,
 };
@@ -62,16 +57,13 @@ pub async fn login(
         Json(json!({ "session_token": token, "expires_at": session.expires_at })).into_response();
 
     let secure = state.config.secure();
-    let cookie = Cookie::build("session", token)
-        .domain(state.config.domain())
-        .secure(secure)
-        .http_only(!secure)
-        .path("/")
-        .finish();
 
-    response
-        .headers_mut()
-        .insert(SET_COOKIE, cookie.to_string().parse()?);
+    response.headers_mut().insert(
+        SET_COOKIE,
+        session
+            .cookie(state.config.domain().as_str(), secure)
+            .parse()?,
+    );
 
     Ok(response)
 }

src/state.rs

@@ -6,7 +6,8 @@ use url::Url;
 pub struct Config {
     pub bind: String,
     pub database_url: String,
-    pub session_duration: i32, // in seconds
+    pub session_duration: i64, // in seconds
+    pub prune_interval: u64,   // in seconds
     pub base_url: String,
 }
 
@@ -31,6 +32,7 @@ impl Default for Config {
             bind: "127.0.0.1:3000".into(),
             database_url: "postgres://artificiale:changeme@localhost/artificiale".into(),
             session_duration: 3600, // 60min
+            prune_interval: 10,     // 60min
             base_url: "http://localhost".into(),
         }
     }