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use std::{convert::Infallible, net::SocketAddr, sync::Arc};
use hyper::server::conn::Http;
use tokio::{
io::{AsyncRead, AsyncWrite, Result as IoResult},
net::{TcpListener, ToSocketAddrs},
};
#[cfg(feature = "tls")]
use tokio_rustls::{
rustls::{
AllowAnyAnonymousOrAuthenticatedClient, AllowAnyAuthenticatedClient, NoClientAuth,
RootCertStore, ServerConfig,
},
TlsAcceptor,
};
use crate::{Endpoint, EndpointExt, IntoEndpoint, Request, Response};
pub struct Server {
listener: TcpListener,
}
impl Server {
pub async fn bind(addr: impl ToSocketAddrs) -> IoResult<Self> {
let listener = TcpListener::bind(addr).await?;
Ok(Self { listener })
}
pub fn local_addr(&self) -> IoResult<SocketAddr> {
self.listener.local_addr()
}
pub async fn run(self, ep: impl IntoEndpoint) -> IoResult<()> {
let ep = Arc::new(ep.into_endpoint().map_to_response());
loop {
let (socket, remote_addr) = self.listener.accept().await?;
tokio::spawn(serve_connection(socket, remote_addr, ep.clone()));
}
}
#[cfg(feature = "tls")]
#[cfg_attr(docsrs, doc(cfg(feature = "tls")))]
pub fn tls(self) -> TlsServer {
TlsServer {
listener: self.listener,
cert: Vec::new(),
key: Vec::new(),
client_auth: TlsClientAuth::Off,
ocsp_resp: Vec::new(),
}
}
}
#[cfg(feature = "tls")]
enum TlsClientAuth {
Off,
Optional(Vec<u8>),
Required(Vec<u8>),
}
#[cfg(feature = "tls")]
#[cfg_attr(docsrs, doc(cfg(feature = "tls")))]
pub struct TlsServer {
listener: TcpListener,
cert: Vec<u8>,
key: Vec<u8>,
client_auth: TlsClientAuth,
ocsp_resp: Vec<u8>,
}
#[cfg(feature = "tls")]
impl TlsServer {
pub fn cert(mut self, cert: impl Into<Vec<u8>>) -> Self {
self.cert = cert.into();
self
}
pub fn key(mut self, key: impl Into<Vec<u8>>) -> Self {
self.key = key.into();
self
}
pub fn client_auth_optional(mut self, trust_anchor: impl Into<Vec<u8>>) -> Self {
self.client_auth = TlsClientAuth::Optional(trust_anchor.into());
self
}
pub fn client_auth_required(mut self, trust_anchor: impl Into<Vec<u8>>) -> Self {
self.client_auth = TlsClientAuth::Required(trust_anchor.into());
self
}
pub fn ocsp_resp(mut self, ocsp_resp: impl Into<Vec<u8>>) -> Self {
self.ocsp_resp = ocsp_resp.into();
self
}
pub async fn run(self, ep: impl IntoEndpoint) -> IoResult<()> {
use std::io::{Error as IoError, ErrorKind};
let ep = Arc::new(ep.into_endpoint().map_to_response());
let cert = tokio_rustls::rustls::internal::pemfile::certs(&mut self.cert.as_slice())
.map_err(|_| IoError::new(ErrorKind::Other, "failed to parse tls certificates"))?;
let key = {
let mut pkcs8 = tokio_rustls::rustls::internal::pemfile::pkcs8_private_keys(
&mut self.key.as_slice(),
)
.map_err(|_| IoError::new(ErrorKind::Other, "failed to parse tls private keys"))?;
if !pkcs8.is_empty() {
pkcs8.remove(0)
} else {
let mut rsa = tokio_rustls::rustls::internal::pemfile::rsa_private_keys(
&mut self.key.as_slice(),
)
.map_err(|_| IoError::new(ErrorKind::Other, "failed to parse tls private keys"))?;
if !rsa.is_empty() {
rsa.remove(0)
} else {
return Err(IoError::new(
ErrorKind::Other,
"failed to parse tls private keys",
));
}
}
};
fn read_trust_anchor(mut trust_anchor: &[u8]) -> IoResult<RootCertStore> {
let mut store = RootCertStore::empty();
if let Ok((0, _)) | Err(()) = store.add_pem_file(&mut trust_anchor) {
Err(IoError::new(
ErrorKind::Other,
"failed to parse tls trust anchor",
))
} else {
Ok(store)
}
}
let client_auth = match self.client_auth {
TlsClientAuth::Off => NoClientAuth::new(),
TlsClientAuth::Optional(trust_anchor) => {
AllowAnyAnonymousOrAuthenticatedClient::new(read_trust_anchor(&trust_anchor)?)
}
TlsClientAuth::Required(trust_anchor) => {
AllowAnyAuthenticatedClient::new(read_trust_anchor(&trust_anchor)?)
}
};
let mut config = ServerConfig::new(client_auth);
config
.set_single_cert_with_ocsp_and_sct(cert, key, self.ocsp_resp, Vec::new())
.map_err(|err| IoError::new(ErrorKind::Other, err.to_string()))?;
config.set_protocols(&["h2".into(), "http/1.1".into()]);
let acceptor = TlsAcceptor::from(Arc::new(config));
loop {
let (socket, remote_addr) = self.listener.accept().await?;
let acceptor = acceptor.clone();
let ep = ep.clone();
tokio::spawn(async move {
if let Ok(tls_socket) = acceptor.accept(socket).await {
serve_connection(tls_socket, remote_addr, ep).await;
}
});
}
}
}
async fn serve_connection(
socket: impl AsyncRead + AsyncWrite + Send + Unpin + 'static,
remote_addr: SocketAddr,
ep: Arc<dyn Endpoint<Output = Response>>,
) {
let service = hyper::service::service_fn({
move |req: hyper::Request<hyper::Body>| {
let ep = ep.clone();
async move {
let mut req = Request::from_hyper_request(req, remote_addr);
req.state_mut().remote_addr = remote_addr;
let cookie_jar = req.cookie().clone();
let mut resp = ep.call(req).await.into_hyper_response();
cookie_jar.append_delta_to_headers(resp.headers_mut());
Ok::<_, Infallible>(resp)
}
}
});
let _ = Http::new()
.serve_connection(socket, service)
.with_upgrades()
.await;
}