Files
Ferrous-Solitaire/solitaire_server/src/middleware.rs
T
root 34ba4dc6ed feat(workspace): full server + sync implementation, all tests green
- solitaire_server: Axum auth, sync push/pull, leaderboard, daily
  challenge, account deletion, JWT middleware, rate limiting via
  tower_governor, SQLite migrations, health endpoint
- solitaire_server: expose build_test_router (no rate limiting) so
  integration tests work without a peer IP in oneshot requests
- solitaire_sync: SyncPayload, merge logic, shared API types
- solitaire_data: SyncProvider trait, LocalOnlyProvider,
  SolitaireServerClient, auth_tokens keyring integration, blanket
  Box<dyn SyncProvider> impl
- solitaire_data/settings: derive Default on SyncBackend (clippy fix)
- .sqlx/: offline query cache so server compiles without a live DB
- sqlx: removed non-existent "offline" feature flag
- keyring v2: fixed Entry::new() returning Result<Entry>
- sqlx 0.8: all SQLite TEXT columns wrapped in Option<T>
- Integration tests: max_connections(1) on in-memory pool so all
  connections share the same schema

All 191 tests pass; cargo clippy -D warnings clean.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-26 23:32:56 +00:00

118 lines
3.6 KiB
Rust

//! Axum middleware for JWT authentication.
//!
//! Extracts and validates the `Authorization: Bearer <token>` header, then
//! injects the authenticated `user_id` into request extensions so handlers
//! can access it via `Extension<AuthenticatedUser>`.
use axum::{
extract::{FromRequestParts, Request},
http::request::Parts,
middleware::Next,
response::Response,
};
use jsonwebtoken::{decode, DecodingKey, Validation};
use serde::{Deserialize, Serialize};
use crate::error::AppError;
/// The claims encoded in our JWT access tokens.
#[derive(Debug, Serialize, Deserialize)]
pub struct Claims {
/// Subject — the user's UUID string.
pub sub: String,
/// Expiry timestamp (Unix seconds).
pub exp: usize,
/// Token kind: `"access"` or `"refresh"`.
pub kind: String,
}
/// The authenticated user identity injected into request extensions after
/// successful JWT validation.
#[derive(Debug, Clone)]
pub struct AuthenticatedUser {
/// The authenticated user's UUID, as a string.
pub user_id: String,
}
/// Axum middleware function that validates the Bearer JWT and injects
/// [`AuthenticatedUser`] into request extensions.
///
/// Returns `401 Unauthorized` if the token is missing, expired, or invalid.
pub async fn require_auth(
mut req: Request,
next: Next,
) -> Result<Response, AppError> {
let secret = std::env::var("JWT_SECRET")
.map_err(|_| AppError::Internal("JWT_SECRET not set".into()))?;
let token = extract_bearer_token(req.headers())
.ok_or(AppError::Unauthorized)?;
let claims = validate_access_token(&token, &secret)?;
req.extensions_mut().insert(AuthenticatedUser {
user_id: claims.sub,
});
Ok(next.run(req).await)
}
/// Extract the raw token string from `Authorization: Bearer <token>`.
fn extract_bearer_token(headers: &axum::http::HeaderMap) -> Option<String> {
let value = headers.get("Authorization")?.to_str().ok()?;
let token = value.strip_prefix("Bearer ")?;
Some(token.to_string())
}
/// Decode and validate a JWT access token, returning its claims on success.
pub fn validate_access_token(token: &str, secret: &str) -> Result<Claims, AppError> {
let key = DecodingKey::from_secret(secret.as_bytes());
let mut validation = Validation::default();
validation.validate_exp = true;
let data = decode::<Claims>(token, &key, &validation)
.map_err(|_| AppError::Unauthorized)?;
if data.claims.kind != "access" {
return Err(AppError::Unauthorized);
}
Ok(data.claims)
}
/// Decode and validate a JWT refresh token, returning its claims on success.
pub fn validate_refresh_token(token: &str, secret: &str) -> Result<Claims, AppError> {
let key = DecodingKey::from_secret(secret.as_bytes());
let mut validation = Validation::default();
validation.validate_exp = true;
let data = decode::<Claims>(token, &key, &validation)
.map_err(|_| AppError::Unauthorized)?;
if data.claims.kind != "refresh" {
return Err(AppError::Unauthorized);
}
Ok(data.claims)
}
// ---------------------------------------------------------------------------
// Axum extractor — allows handlers to receive AuthenticatedUser directly
// ---------------------------------------------------------------------------
#[axum::async_trait]
impl<S> FromRequestParts<S> for AuthenticatedUser
where
S: Send + Sync,
{
type Rejection = AppError;
async fn from_request_parts(parts: &mut Parts, _state: &S) -> Result<Self, Self::Rejection> {
parts
.extensions
.get::<AuthenticatedUser>()
.cloned()
.ok_or(AppError::Unauthorized)
}
}