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#![allow(clippy::unused_async)]
use std::net::SocketAddr;
use std::pin::Pin;
use std::sync::{Arc, Mutex};
use std::time::Duration;
use async_trait::async_trait;
use axum::extract::{FromRequest, RequestParts};
use axum::middleware::{self, Next};
use axum::response::{IntoResponse, Response};
use axum::routing::IntoMakeService;
use axum::{routing, Extension, Router};
use futures::future::TryFutureExt;
use headers::authorization::{Authorization, Basic, Bearer};
use headers::{HeaderMapExt, HeaderName};
use http::header::{AUTHORIZATION, CONTENT_TYPE};
use http::{Request, StatusCode};
use hyper::server::conn::AddrIncoming;
use hyper_openssl::MaybeHttpsStream;
use mz_coord::SessionClient;
use mz_ore::metrics::MetricsRegistry;
use openssl::nid::Nid;
use openssl::ssl::{Ssl, SslContext};
use openssl::x509::X509;
use thiserror::Error;
use tokio::io::AsyncWriteExt;
use tokio::net::TcpStream;
use tokio_openssl::SslStream;
use tower_http::cors::{AllowOrigin, Any, CorsLayer};
use tracing::{error, warn};
use mz_coord::session::Session;
use mz_frontegg_auth::{FronteggAuthentication, FronteggError};
use crate::BUILD_INFO;
mod catalog;
mod memory;
mod root;
mod sql;
const SYSTEM_USER: &str = "mz_system";
#[derive(Debug, Clone)]
pub struct Config {
pub tls: Option<TlsConfig>,
pub frontegg: Option<FronteggAuthentication>,
pub coord_client: mz_coord::Client,
pub allowed_origin: AllowOrigin,
}
#[derive(Debug, Clone)]
pub struct TlsConfig {
pub context: SslContext,
pub mode: TlsMode,
}
#[derive(Debug, Clone, Copy)]
pub enum TlsMode {
Require,
AssumeUser,
}
#[derive(Debug)]
pub struct Server {
tls: Option<TlsConfig>,
router: Mutex<Router>,
}
impl Server {
pub fn new(
Config {
tls,
frontegg,
coord_client,
allowed_origin,
}: Config,
) -> Server {
let tls_mode = tls.as_ref().map(|tls| tls.mode);
let frontegg = Arc::new(frontegg);
let router = Router::new()
.route("/", routing::get(root::handle_home))
.route(
"/api/internal/catalog",
routing::get(catalog::handle_internal_catalog),
)
.route("/api/sql", routing::post(sql::handle_sql))
.route("/memory", routing::get(memory::handle_memory))
.route(
"/hierarchical-memory",
routing::get(memory::handle_hierarchical_memory),
)
.nest("/prof/", mz_prof::http::router(&BUILD_INFO))
.route("/static/*path", routing::get(root::handle_static))
.layer(Extension(coord_client))
.layer(middleware::from_fn(move |req, next| {
let frontegg = Arc::clone(&frontegg);
async move { auth(req, next, tls_mode, &frontegg).await }
}))
.layer(
CorsLayer::new()
.allow_credentials(false)
.allow_headers([
AUTHORIZATION,
CONTENT_TYPE,
HeaderName::from_static("x-materialize-version"),
])
.allow_methods(Any)
.allow_origin(allowed_origin)
.expose_headers(Any)
.max_age(Duration::from_secs(60) * 60),
);
Server {
tls,
router: Mutex::new(router),
}
}
fn tls_context(&self) -> Option<&SslContext> {
self.tls.as_ref().map(|tls| &tls.context)
}
pub async fn handle_connection(&self, conn: TcpStream) -> Result<(), anyhow::Error> {
let (conn, conn_protocol) = match &self.tls_context() {
Some(tls_context) => {
let mut ssl_stream = SslStream::new(Ssl::new(tls_context)?, conn)?;
if let Err(e) = Pin::new(&mut ssl_stream).accept().await {
let _ = ssl_stream.get_mut().shutdown().await;
return Err(e.into());
}
let client_cert = ssl_stream.ssl().peer_certificate();
(
MaybeHttpsStream::Https(ssl_stream),
ConnProtocol::Https { client_cert },
)
}
_ => (MaybeHttpsStream::Http(conn), ConnProtocol::Http),
};
let router = self.router.lock().expect("lock poisoned").clone();
let svc = router.layer(Extension(conn_protocol));
let http = hyper::server::conn::Http::new();
http.serve_connection(conn, svc).err_into().await
}
}
#[derive(Clone)]
enum ConnProtocol {
Http,
Https { client_cert: Option<X509> },
}
struct AuthedUser {
user: String,
create_if_not_exists: bool,
}
pub struct AuthedClient(pub SessionClient);
#[async_trait]
impl<B> FromRequest<B> for AuthedClient
where
B: Send,
{
type Rejection = (StatusCode, String);
async fn from_request(req: &mut RequestParts<B>) -> Result<Self, Self::Rejection> {
let AuthedUser {
user,
create_if_not_exists,
} = req.extensions().get::<AuthedUser>().unwrap();
let coord_client = req.extensions().get::<mz_coord::Client>().unwrap();
let coord_client = coord_client
.new_conn()
.map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
let session = Session::new(coord_client.conn_id(), user.clone());
let (coord_client, _) = match coord_client.startup(session, *create_if_not_exists).await {
Ok(coord_client) => coord_client,
Err(e) => {
return Err((StatusCode::INTERNAL_SERVER_ERROR, e.to_string()));
}
};
Ok(AuthedClient(coord_client))
}
}
#[derive(Debug, Error)]
enum AuthError {
#[error("HTTPS is required")]
HttpsRequired,
#[error("invalid username in client certificate")]
InvalidCertUserName,
#[error("{0}")]
Frontegg(#[from] FronteggError),
#[error("missing authorization header")]
MissingHttpAuthentication,
#[error("{0}")]
MismatchedUser(&'static str),
}
impl IntoResponse for AuthError {
fn into_response(self) -> Response {
warn!("HTTP request failed authentication: {}", self);
let message = match self {
AuthError::HttpsRequired => self.to_string(),
_ => "unauthorized".into(),
};
(StatusCode::UNAUTHORIZED, message).into_response()
}
}
async fn auth<B>(
mut req: Request<B>,
next: Next<B>,
tls_mode: Option<TlsMode>,
frontegg: &Option<FronteggAuthentication>,
) -> impl IntoResponse {
let conn_protocol = req.extensions().get::<ConnProtocol>().unwrap();
let mut user = match (tls_mode, &conn_protocol) {
(None, ConnProtocol::Http) => None,
(None, ConnProtocol::Https { .. }) => unreachable!(),
(Some(TlsMode::Require), ConnProtocol::Http) => return Err(AuthError::HttpsRequired),
(Some(TlsMode::Require), ConnProtocol::Https { .. }) => None,
(Some(TlsMode::AssumeUser), ConnProtocol::Http) => return Err(AuthError::HttpsRequired),
(Some(TlsMode::AssumeUser), ConnProtocol::Https { client_cert }) => client_cert
.as_ref()
.and_then(|cert| cert.subject_name().entries_by_nid(Nid::COMMONNAME).next())
.and_then(|cn| cn.data().as_utf8().ok())
.map(|cn| Some(cn.to_string()))
.ok_or(AuthError::InvalidCertUserName)?,
};
let user = match frontegg {
None => user.unwrap_or_else(|| SYSTEM_USER.to_string()),
Some(frontegg) => {
let token = if let Some(basic) = req.headers().typed_get::<Authorization<Basic>>() {
if let Some(user) = user {
if basic.username() != user {
return Err(AuthError::MismatchedUser(
"user in client certificate did not match user specified in authorization header",
));
}
}
user = Some(basic.username().to_string());
frontegg
.exchange_password_for_token(basic.0.password())
.await?
.access_token
} else if let Some(bearer) = req.headers().typed_get::<Authorization<Bearer>>() {
bearer.token().to_string()
} else {
return Err(AuthError::MissingHttpAuthentication);
};
let claims = frontegg.validate_access_token(&token, user.as_deref())?;
claims.email
}
};
req.extensions_mut().insert(AuthedUser {
user,
create_if_not_exists: frontegg.is_some(),
});
Ok(next.run(req).await)
}
#[derive(Clone)]
pub struct InternalServer {
metrics_registry: MetricsRegistry,
}
impl InternalServer {
pub fn new(metrics_registry: MetricsRegistry) -> Self {
Self { metrics_registry }
}
pub fn bind(self, addr: SocketAddr) -> axum::Server<AddrIncoming, IntoMakeService<Router>> {
let metrics_registry = self.metrics_registry;
let router = Router::new()
.route(
"/metrics",
routing::get(move || async move {
mz_http_util::handle_prometheus(&metrics_registry).await
}),
)
.route(
"/api/livez",
routing::get(mz_http_util::handle_liveness_check),
);
axum::Server::bind(&addr).serve(router.into_make_service())
}
}