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use std::fmt::{self, Formatter};
use std::future::Future;
use std::io::{self, Cursor, Error as IoError, ErrorKind, Read};
use std::path::Path;
use std::pin::Pin;
use std::task::{Context, Poll};
use futures_util::future::Ready;
use futures_util::{ready, stream, Stream};
use hyper::server::accept::Accept;
use hyper::server::conn::{AddrIncoming, AddrStream};
use pin_project_lite::pin_project;
use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
use tokio_native_tls::native_tls::{Identity, TlsAcceptor};
use tokio_native_tls::{TlsAcceptor as AsyncTlsAcceptor, TlsStream};
use super::{IntoAddrIncoming, LazyFile, Listener};
use crate::addr::SocketAddr;
use crate::transport::Transport;
pub struct NativeTlsConfig {
pkcs12: Box<dyn Read + Send + Sync>,
password: String,
}
impl fmt::Debug for NativeTlsConfig {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
f.debug_struct("NativeTlsConfig").finish()
}
}
impl Default for NativeTlsConfig {
fn default() -> Self {
Self::new()
}
}
impl NativeTlsConfig {
#[inline]
pub fn new() -> Self {
NativeTlsConfig {
pkcs12: Box::new(io::empty()),
password: String::new(),
}
}
#[inline]
pub fn with_pkcs12_path(mut self, path: impl AsRef<Path>) -> Self {
self.pkcs12 = Box::new(LazyFile {
path: path.as_ref().into(),
file: None,
});
self
}
#[inline]
pub fn with_pkcs12(mut self, pkcs12: impl Into<Vec<u8>>) -> Self {
self.pkcs12 = Box::new(Cursor::new(pkcs12.into()));
self
}
#[inline]
pub fn with_password(mut self, password: impl Into<String>) -> Self {
self.password = password.into();
self
}
#[inline]
pub fn identity(mut self) -> Result<Identity, IoError> {
let mut pkcs12 = Vec::new();
self.pkcs12
.read_to_end(&mut pkcs12)
.map_err(|e| IoError::new(ErrorKind::Other, e.to_string()))?;
Identity::from_pkcs12(&pkcs12, &self.password).map_err(|e| IoError::new(ErrorKind::Other, e.to_string()))
}
}
pin_project! {
pub struct NativeTlsListener<C> {
#[pin]
config_stream: C,
incoming: AddrIncoming,
identity: Option<Identity>,
}
}
pub struct NativeTlsListenerBuilder<C> {
config_stream: C,
}
impl<C> NativeTlsListenerBuilder<C>
where
C: Stream,
C::Item: Into<Identity>,
{
#[inline]
pub fn bind(self, incoming: impl IntoAddrIncoming) -> NativeTlsListener<C> {
self.try_bind(incoming).unwrap()
}
#[inline]
pub fn try_bind(self, incoming: impl IntoAddrIncoming) -> Result<NativeTlsListener<C>, hyper::Error> {
Ok(NativeTlsListener {
config_stream: self.config_stream,
incoming: incoming.into_incoming(),
identity: None,
})
}
}
impl NativeTlsListener<stream::Once<Ready<Identity>>> {
#[inline]
pub fn with_config(config: NativeTlsConfig) -> NativeTlsListenerBuilder<stream::Once<Ready<Identity>>> {
Self::try_with_config(config).unwrap()
}
#[inline]
pub fn try_with_config(
config: NativeTlsConfig,
) -> Result<NativeTlsListenerBuilder<stream::Once<Ready<Identity>>>, IoError> {
let identity = config.identity()?;
Ok(Self::with_identity(identity))
}
#[inline]
pub fn with_identity(identity: impl Into<Identity>) -> NativeTlsListenerBuilder<stream::Once<Ready<Identity>>> {
let stream = futures_util::stream::once(futures_util::future::ready(identity.into()));
Self::with_config_stream(stream)
}
}
impl From<NativeTlsConfig> for Identity {
fn from(config: NativeTlsConfig) -> Self {
config.identity().unwrap()
}
}
impl<C> NativeTlsListener<C> {
pub fn local_addr(&self) -> SocketAddr {
self.incoming.local_addr().into()
}
}
impl<C> NativeTlsListener<C>
where
C: Stream,
C::Item: Into<Identity>,
{
#[inline]
pub fn with_config_stream(config_stream: C) -> NativeTlsListenerBuilder<C> {
NativeTlsListenerBuilder { config_stream }
}
}
impl<C> Listener for NativeTlsListener<C>
where
C: Stream,
C::Item: Into<Identity>,
{
}
impl<C> Accept for NativeTlsListener<C>
where
C: Stream,
C::Item: Into<Identity>,
{
type Conn = NativeTlsStream;
type Error = IoError;
fn poll_accept(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Result<Self::Conn, Self::Error>>> {
let this = self.project();
if let Poll::Ready(Some(identity)) = this.config_stream.poll_next(cx) {
let identity = identity.into();
*this.identity = Some(identity);
}
if let Some(identity) = this.identity {
match ready!(Pin::new(this.incoming).poll_accept(cx)) {
Some(Ok(sock)) => {
let stream = NativeTlsStream::new(sock.remote_addr().into(), sock, identity.clone())?;
Poll::Ready(Some(Ok(stream)))
}
Some(Err(e)) => Poll::Ready(Some(Err(e))),
_ => Poll::Ready(None),
}
} else {
Poll::Ready(Some(Err(IoError::new(ErrorKind::Other, "acceptor is none"))))
}
}
}
pin_project! {
#[cfg_attr(docsrs, doc(cfg(feature = "native_tls")))]
pub struct NativeTlsStream {
#[pin]
inner_future: Pin<Box<dyn Future<Output=Result<TlsStream<AddrStream>, tokio_native_tls::native_tls::Error>> + Send>>,
inner_stream: Option<TlsStream<AddrStream>>,
remote_addr: SocketAddr,
}
}
impl Transport for NativeTlsStream {
fn remote_addr(&self) -> Option<SocketAddr> {
Some(self.remote_addr.clone())
}
}
impl NativeTlsStream {
fn new(remote_addr: SocketAddr, stream: AddrStream, identity: Identity) -> Result<Self, IoError> {
let acceptor: AsyncTlsAcceptor = TlsAcceptor::new(identity)
.map_err(|e| IoError::new(ErrorKind::Other, e.to_string()))?
.into();
Ok(NativeTlsStream {
inner_future: Box::pin(async move { acceptor.accept(stream).await }),
inner_stream: None,
remote_addr,
})
}
}
impl AsyncRead for NativeTlsStream {
fn poll_read(self: Pin<&mut Self>, cx: &mut Context, buf: &mut ReadBuf) -> Poll<io::Result<()>> {
let mut this = self.project();
if let Some(inner_stream) = &mut this.inner_stream {
Pin::new(inner_stream).poll_read(cx, buf)
} else if let Ok(stream) = ready!(this.inner_future.poll(cx)) {
*this.inner_stream = Some(stream);
Pin::new(this.inner_stream.as_mut().unwrap()).poll_read(cx, buf)
} else {
Poll::Ready(Err(IoError::new(ErrorKind::Other, "native tls error")))
}
}
}
impl AsyncWrite for NativeTlsStream {
fn poll_write(self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8]) -> Poll<io::Result<usize>> {
let mut this = self.project();
if let Some(inner_stream) = &mut this.inner_stream {
Pin::new(inner_stream).poll_write(cx, buf)
} else if let Ok(stream) = ready!(this.inner_future.poll(cx)) {
*this.inner_stream = Some(stream);
Pin::new(this.inner_stream.as_mut().unwrap()).poll_write(cx, buf)
} else {
Poll::Ready(Err(IoError::new(ErrorKind::Other, "native tls error")))
}
}
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
let mut this = self.project();
if let Some(inner_stream) = &mut this.inner_stream {
Pin::new(inner_stream).poll_flush(cx)
} else if let Ok(stream) = ready!(this.inner_future.poll(cx)) {
*this.inner_stream = Some(stream);
Pin::new(this.inner_stream.as_mut().unwrap()).poll_flush(cx)
} else {
Poll::Ready(Err(IoError::new(ErrorKind::Other, "native tls error")))
}
}
fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
let mut this = self.project();
if let Some(inner_stream) = &mut this.inner_stream {
Pin::new(inner_stream).poll_shutdown(cx)
} else if let Ok(stream) = ready!(this.inner_future.poll(cx)) {
*this.inner_stream = Some(stream);
Pin::new(this.inner_stream.as_mut().unwrap()).poll_shutdown(cx)
} else {
Poll::Ready(Err(IoError::new(ErrorKind::Other, "native tls error")))
}
}
}
#[cfg(test)]
mod tests {
use futures_util::{Stream, StreamExt};
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::net::TcpStream;
use super::*;
impl<C> Stream for NativeTlsListener<C>
where
C: Stream,
C::Item: Into<Identity>,
{
type Item = Result<NativeTlsStream, IoError>;
fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
self.poll_accept(cx)
}
}
#[tokio::test]
async fn test_native_tls_listener() {
let addr = "127.0.0.1:7879";
let mut listener = NativeTlsListener::with_config(
NativeTlsConfig::new()
.with_pkcs12(include_bytes!("../../certs/identity.p12").to_vec())
.with_password("mypass"),
)
.bind(addr);
tokio::spawn(async move {
let stream = TcpStream::connect(addr).await.unwrap();
let connector = tokio_native_tls::TlsConnector::from(
tokio_native_tls::native_tls::TlsConnector::builder()
.danger_accept_invalid_certs(true)
.build()
.unwrap(),
);
let mut tls_stream = connector.connect(addr, stream).await.unwrap();
tls_stream.write_i32(518).await.unwrap();
});
let mut stream = listener.next().await.unwrap().unwrap();
assert_eq!(stream.read_i32().await.unwrap(), 518);
}
}