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A lexicon-driven AppView for ATProto.
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Rust
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use crate::AppState;use crate::admin;use crate::auth::XrpcClaims;use crate::domain_middleware::resolve_domain;use crate::error::AppError;use crate::profile;use crate::rate_limit::CheckResult;use crate::repo;use crate::xrpc;
pub fn router(state: AppState) -> Router { let static_dir = state.config.static_dir.clone();
// SPA fallback: when ServeDir can't find a static file, check if the // parent path contains a _/index.html (Next.js dynamic route shell) // before falling back to the root index.html. let fallback_dir = static_dir.clone(); let spa_fallback = tower::service_fn(move |req: axum::http::Request<_>| { let dir = fallback_dir.clone(); async move { let path = req.uri().path(); let segments: Vec<&str> = path.trim_matches('/').split('/').collect();
// Try _/index.html in the parent directory (matches Next.js dynamic routes) if segments.len() >= 2 { let parent = segments[..segments.len() - 1].join("/"); let dynamic_path = format!("{}/{}/_/index.html", dir, parent); if let Ok(body) = tokio::fs::read(&dynamic_path).await { return Ok::<_, Infallible>( axum::http::Response::builder() .header("content-type", "text/html; charset=utf-8") .body(Full::new(Bytes::from(body))) .unwrap(), ); } }
// Default: serve root index.html let index = format!("{}/index.html", dir); let body = tokio::fs::read(&index).await.unwrap_or_default(); Ok::<_, Infallible>( axum::http::Response::builder() .header("content-type", "text/html; charset=utf-8") .body(Full::new(Bytes::from(body))) .unwrap(), ) } });
let serve_dir = ServeDir::new(&static_dir).not_found_service(spa_fallback);
let domain_routes = Router::new() .merge( crate::spaces::routes::space_routes().layer(axum::middleware::from_fn_with_state( state.clone(), crate::feature_middleware::require_spaces, )), ) .nest("/auth", crate::auth::routes::routes()) .nest("/external-auth", crate::external_auth::routes()) .nest("/oauth", crate::oauth::routes::routes()) // https://atproto.com/specs/oauth#types-of-clients .route("/oauth-client-metadata.json", get(client_metadata)) .route("/xrpc/app.bsky.actor.getProfile", get(get_profile)) .route( "/xrpc/com.atproto.repo.uploadBlob", post(repo::upload_blob).layer(DefaultBodyLimit::max(50 * 1024 * 1024)), ) .route( "/xrpc/dev.happyview.listApiClients", get(crate::dev_happyview::list_api_clients), ) .route( "/xrpc/dev.happyview.getApiClient", get(crate::dev_happyview::get_api_client), ) .route( "/xrpc/dev.happyview.createApiClient", post(crate::dev_happyview::create_api_client), ) .route( "/xrpc/dev.happyview.deleteApiClient", post(crate::dev_happyview::delete_api_client), ) // Delegation .route( "/xrpc/dev.happyview.delegation.linkAccount", post(crate::delegation::link_account::link_account), ) .route( "/xrpc/dev.happyview.delegation.unlinkAccount", post(crate::delegation::unlink_account::unlink_account), ) .route( "/xrpc/dev.happyview.delegation.addDelegate", post(crate::delegation::add_delegate::add_delegate), ) .route( "/xrpc/dev.happyview.delegation.removeDelegate", post(crate::delegation::remove_delegate::remove_delegate), ) .route( "/xrpc/dev.happyview.delegation.listAccounts", get(crate::delegation::list_accounts::list_accounts), ) .route( "/xrpc/dev.happyview.delegation.getAccount", get(crate::delegation::get_account::get_account), ) .route( "/xrpc/dev.happyview.delegation.listDelegates", get(crate::delegation::list_delegates::list_delegates), ) // Catch-all for dynamically registered lexicons .route("/xrpc/{method}", get(xrpc::xrpc_get).post(xrpc::xrpc_post)) .route("/config", get(config_endpoint)) .route("/settings/logo", get(crate::admin::settings::serve_logo)) .layer(axum::middleware::from_fn_with_state( state.clone(), resolve_domain, ));
Router::new() .route("/health", get(health)) .nest("/admin", admin::admin_routes(state.clone())) .merge(domain_routes) .fallback_service(serve_dir) .layer(TraceLayer::new_for_http()) .layer( CorsLayer::new() .allow_origin(tower_http::cors::AllowOrigin::mirror_request()) .allow_methods([Method::GET, Method::POST, Method::DELETE, Method::OPTIONS]) .allow_headers([ header::CONTENT_TYPE, header::AUTHORIZATION, header::COOKIE, axum::http::HeaderName::from_static("x-client-key"), axum::http::HeaderName::from_static("x-client-secret"), axum::http::HeaderName::from_static("dpop"), ]) .allow_credentials(true), ) .with_state(state)}
async fn health() -> &'static str { "ok"}
async fn config_endpoint( State(state): State<AppState>, req: axum::extract::Request,) -> Json<serde_json::Value> { let domain_url = crate::domain_middleware::extract_domain(&req) .map(|d| d.url.clone()) .unwrap_or_else(|| state.config.public_url.clone());
let pool = &state.db; let backend = state.db_backend;
let app_name = crate::admin::settings::get_setting(pool, "app_name", backend) .await .or_else(|| state.config.app_name.clone());
let has_logo_data = crate::admin::settings::get_setting(pool, "logo_data", backend) .await .is_some(); let logo_url = if has_logo_data { Some(format!( "{}/settings/logo", domain_url.trim_end_matches('/') )) } else { crate::admin::settings::get_setting(pool, "logo_uri", backend) .await .or_else(|| state.config.logo_uri.clone()) };
let version: &str = match option_env!("HAPPYVIEW_VERSION") { Some(v) if !v.is_empty() => v.trim_start_matches('v'), _ => env!("CARGO_PKG_VERSION"), };
let spaces_enabled = crate::feature_flags::is_enabled( pool, crate::feature_flags::FeatureFlag::SPACES_ENABLED, backend, ) .await;
Json(serde_json::json!({ "public_url": domain_url, "version": version, "database_backend": format!("{:?}", state.config.database_backend).to_lowercase(), "jetstream_url": state.config.jetstream_url, "relay_url": state.config.relay_url, "plc_url": state.config.plc_url, "default_rate_limit_capacity": state.config.default_rate_limit_capacity, "default_rate_limit_refill_rate": state.config.default_rate_limit_refill_rate, "app_name": app_name, "logo_url": logo_url, "features": { "spaces": spaces_enabled, }, }))}
async fn client_metadata( State(state): State<AppState>, req: axum::extract::Request,) -> Json<serde_json::Value> { let domain_url = crate::domain_middleware::extract_domain(&req) .map(|d| d.url.clone()) .unwrap_or_else(|| state.config.public_url.clone());
let oauth_client = state.oauth.get_for_domain(&domain_url); let mut metadata = serde_json::to_value(&oauth_client.client_metadata).unwrap_or_default();
// The `client_id` field in the response must exactly match the URL the // authorization server fetched. let client_id = format!( "{}/oauth-client-metadata.json", domain_url.trim_end_matches('/') ); metadata["client_id"] = serde_json::Value::String(client_id);
let pool = &state.db; let backend = state.db_backend;
if let Some(name) = crate::admin::settings::get_setting(pool, "app_name", backend).await { metadata["client_name"] = serde_json::Value::String(name); }
if let Some(uri) = crate::admin::settings::get_setting(pool, "client_uri", backend).await { metadata["client_uri"] = serde_json::Value::String(uri); }
// Logo: prefer uploaded logo_data (served at /settings/logo), fall back to logo_uri setting let has_logo_data = crate::admin::settings::get_setting(pool, "logo_data", backend) .await .is_some(); if has_logo_data { metadata["logo_uri"] = serde_json::Value::String(format!( "{}/settings/logo", domain_url.trim_end_matches('/') )); } else if let Some(uri) = crate::admin::settings::get_setting(pool, "logo_uri", backend).await { metadata["logo_uri"] = serde_json::Value::String(uri); }
if let Some(uri) = crate::admin::settings::get_setting(pool, "tos_uri", backend).await { metadata["tos_uri"] = serde_json::Value::String(uri); }
if let Some(uri) = crate::admin::settings::get_setting(pool, "policy_uri", backend).await { metadata["policy_uri"] = serde_json::Value::String(uri); }
Json(metadata)}
async fn get_profile( State(state): State<AppState>, xrpc_claims: XrpcClaims,) -> Result<Response, AppError> { let claims = xrpc_claims .0 .ok_or_else(|| AppError::Auth("getProfile requires DPoP authentication".into()))?; let check = if let Some(client_key) = claims.client_key() { let cost = state .rate_limiter .default_cost_for_type(client_key, "query"); Some(state.rate_limiter.check(client_key, cost)) } else { None };
if let Some(CheckResult::Limited { retry_after, limit, reset, }) = check { return Err(AppError::RateLimited { retry_after, limit, reset, }); }
let profile = profile::resolve_profile(&state.http, &state.config.plc_url, claims.did()).await?; let mut response = Json(profile).into_response();
if let Some(CheckResult::Allowed { remaining, limit, reset, }) = check { let h = response.headers_mut(); h.insert("RateLimit-Limit", limit.into()); h.insert("RateLimit-Remaining", remaining.into()); h.insert("RateLimit-Reset", reset.into()); }
Ok(response)}