feat(tls): add accept::rustls_0_22 module

actix-tls/Cargo.toml

@@ -115,6 +115,7 @@ actix-server = "2"
 bytes = "1"
 env_logger = "0.10"
 futures-util = { version = "0.3.17", default-features = false, features = ["sink"] }
+itertools = "0.12"
 rcgen = "0.11"
 rustls-pemfile = "2"
 tokio-rustls-025 = { package = "tokio-rustls", version = "0.25" }
@@ -122,4 +123,4 @@ trust-dns-resolver = "0.23"
 
 [[example]]
 name = "accept-rustls"
-required-features = ["accept", "rustls-0_22"]
+required-features = ["accept", "rustls-0_22-webpki-roots"]

actix-tls/examples/accept-rustls.rs

@@ -15,11 +15,8 @@
 //! http --verify=false https://127.0.0.1:8443
 //! ```
 
-#[rustfmt::skip]
 // this `use` is only exists because of how we have organised the crate
 // it is not necessary for your actual code; you should import from `rustls` normally
-use tokio_rustls_024::rustls;
-
 use std::{
     fs::File,
     io::{self, BufReader},
@@ -33,10 +30,13 @@ use std::{
 use actix_rt::net::TcpStream;
 use actix_server::Server;
 use actix_service::ServiceFactoryExt as _;
-use actix_tls::accept::rustls_0_21::{Acceptor as RustlsAcceptor, TlsStream};
+use actix_tls::accept::rustls_0_22::{Acceptor as RustlsAcceptor, TlsStream};
 use futures_util::future::ok;
-use rustls::{server::ServerConfig, Certificate, PrivateKey};
+use itertools::Itertools as _;
+use rustls::server::ServerConfig;
 use rustls_pemfile::{certs, rsa_private_keys};
+use rustls_pki_types_1::PrivateKeyDer;
+use tokio_rustls_025::rustls;
 use tracing::info;
 
 #[actix_rt::main]
@@ -54,17 +54,15 @@ async fn main() -> io::Result<()> {
     let cert_file = &mut BufReader::new(File::open(cert_path).unwrap());
     let key_file = &mut BufReader::new(File::open(key_path).unwrap());
 
-    let cert_chain = certs(cert_file)
-        .unwrap()
-        .into_iter()
-        .map(Certificate)
-        .collect();
-    let mut keys = rsa_private_keys(key_file).unwrap();
+    let cert_chain = certs(cert_file);
+    let mut keys = rsa_private_keys(key_file);
 
     let tls_config = ServerConfig::builder()
-        .with_safe_defaults()
         .with_no_client_auth()
-        .with_single_cert(cert_chain, PrivateKey(keys.remove(0)))
+        .with_single_cert(
+            cert_chain.try_collect::<_, Vec<_>, _>()?,
+            PrivateKeyDer::Pkcs1(keys.next().unwrap()?),
+        )
         .unwrap();
 
     let tls_acceptor = RustlsAcceptor::new(tls_config);

actix-tls/src/accept/mod.rs

@@ -22,6 +22,12 @@ pub use rustls_0_20 as rustls;
 #[cfg(feature = "rustls-0_21")]
 pub mod rustls_0_21;
 
+#[cfg(any(
+    feature = "rustls-0_22-webpki-roots",
+    feature = "rustls-0_22-native-roots",
+))]
+pub mod rustls_0_22;
+
 #[cfg(feature = "native-tls")]
 pub mod native_tls;
 

actix-tls/src/accept/rustls_0_22.rs

@@ -0,0 +1,198 @@
+//! `rustls` v0.22 based TLS connection acceptor service.
+//!
+//! See [`Acceptor`] for main service factory docs.
+
+use std::{
+    convert::Infallible,
+    future::Future,
+    io::{self, IoSlice},
+    pin::Pin,
+    sync::Arc,
+    task::{Context, Poll},
+    time::Duration,
+};
+
+use actix_rt::{
+    net::{ActixStream, Ready},
+    time::{sleep, Sleep},
+};
+use actix_service::{Service, ServiceFactory};
+use actix_utils::{
+    counter::{Counter, CounterGuard},
+    future::{ready, Ready as FutReady},
+};
+use pin_project_lite::pin_project;
+use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
+use tokio_rustls::{Accept, TlsAcceptor};
+use tokio_rustls_025 as tokio_rustls;
+
+use super::{TlsError, DEFAULT_TLS_HANDSHAKE_TIMEOUT, MAX_CONN_COUNTER};
+
+pub mod reexports {
+    //! Re-exports from `rustls` that are useful for acceptors.
+
+    pub use tokio_rustls_025::rustls::ServerConfig;
+}
+
+/// Wraps a `rustls` based async TLS stream in order to implement [`ActixStream`].
+pub struct TlsStream<IO>(tokio_rustls::server::TlsStream<IO>);
+
+impl_more::impl_from!(<IO> in tokio_rustls::server::TlsStream<IO> => TlsStream<IO>);
+impl_more::impl_deref_and_mut!(<IO> in TlsStream<IO> => tokio_rustls::server::TlsStream<IO>);
+
+impl<IO: ActixStream> AsyncRead for TlsStream<IO> {
+    fn poll_read(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &mut ReadBuf<'_>,
+    ) -> Poll<io::Result<()>> {
+        Pin::new(&mut **self.get_mut()).poll_read(cx, buf)
+    }
+}
+
+impl<IO: ActixStream> AsyncWrite for TlsStream<IO> {
+    fn poll_write(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &[u8],
+    ) -> Poll<io::Result<usize>> {
+        Pin::new(&mut **self.get_mut()).poll_write(cx, buf)
+    }
+
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
+        Pin::new(&mut **self.get_mut()).poll_flush(cx)
+    }
+
+    fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
+        Pin::new(&mut **self.get_mut()).poll_shutdown(cx)
+    }
+
+    fn poll_write_vectored(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        bufs: &[IoSlice<'_>],
+    ) -> Poll<io::Result<usize>> {
+        Pin::new(&mut **self.get_mut()).poll_write_vectored(cx, bufs)
+    }
+
+    fn is_write_vectored(&self) -> bool {
+        (**self).is_write_vectored()
+    }
+}
+
+impl<IO: ActixStream> ActixStream for TlsStream<IO> {
+    fn poll_read_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
+        IO::poll_read_ready((**self).get_ref().0, cx)
+    }
+
+    fn poll_write_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
+        IO::poll_write_ready((**self).get_ref().0, cx)
+    }
+}
+
+/// Accept TLS connections via the `rustls` crate.
+pub struct Acceptor {
+    config: Arc<reexports::ServerConfig>,
+    handshake_timeout: Duration,
+}
+
+impl Acceptor {
+    /// Constructs `rustls` based acceptor service factory.
+    pub fn new(config: reexports::ServerConfig) -> Self {
+        Acceptor {
+            config: Arc::new(config),
+            handshake_timeout: DEFAULT_TLS_HANDSHAKE_TIMEOUT,
+        }
+    }
+
+    /// Limit the amount of time that the acceptor will wait for a TLS handshake to complete.
+    ///
+    /// Default timeout is 3 seconds.
+    pub fn set_handshake_timeout(&mut self, handshake_timeout: Duration) -> &mut Self {
+        self.handshake_timeout = handshake_timeout;
+        self
+    }
+}
+
+impl Clone for Acceptor {
+    fn clone(&self) -> Self {
+        Self {
+            config: self.config.clone(),
+            handshake_timeout: self.handshake_timeout,
+        }
+    }
+}
+
+impl<IO: ActixStream> ServiceFactory<IO> for Acceptor {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<io::Error, Infallible>;
+    type Config = ();
+    type Service = AcceptorService;
+    type InitError = ();
+    type Future = FutReady<Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        let res = MAX_CONN_COUNTER.with(|conns| {
+            Ok(AcceptorService {
+                acceptor: self.config.clone().into(),
+                conns: conns.clone(),
+                handshake_timeout: self.handshake_timeout,
+            })
+        });
+
+        ready(res)
+    }
+}
+
+/// Rustls based acceptor service.
+pub struct AcceptorService {
+    acceptor: TlsAcceptor,
+    conns: Counter,
+    handshake_timeout: Duration,
+}
+
+impl<IO: ActixStream> Service<IO> for AcceptorService {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<io::Error, Infallible>;
+    type Future = AcceptFut<IO>;
+
+    fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+        if self.conns.available(cx) {
+            Poll::Ready(Ok(()))
+        } else {
+            Poll::Pending
+        }
+    }
+
+    fn call(&self, req: IO) -> Self::Future {
+        AcceptFut {
+            fut: self.acceptor.accept(req),
+            timeout: sleep(self.handshake_timeout),
+            _guard: self.conns.get(),
+        }
+    }
+}
+
+pin_project! {
+    /// Accept future for Rustls service.
+    #[doc(hidden)]
+    pub struct AcceptFut<IO: ActixStream> {
+        fut: Accept<IO>,
+        #[pin]
+        timeout: Sleep,
+        _guard: CounterGuard,
+    }
+}
+
+impl<IO: ActixStream> Future for AcceptFut<IO> {
+    type Output = Result<TlsStream<IO>, TlsError<io::Error, Infallible>>;
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let mut this = self.project();
+        match Pin::new(&mut this.fut).poll(cx) {
+            Poll::Ready(Ok(stream)) => Poll::Ready(Ok(TlsStream(stream))),
+            Poll::Ready(Err(err)) => Poll::Ready(Err(TlsError::Tls(err))),
+            Poll::Pending => this.timeout.poll(cx).map(|_| Err(TlsError::Timeout)),
+        }
+    }
+}