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use std::{net::SocketAddr, sync::Arc};
use async_trait::async_trait;
use futures_util::SinkExt;
use rustls_pki_types as pki_types;
use karyon_core::async_runtime::{
io::{split, ReadHalf, WriteHalf},
lock::Mutex,
net::{TcpListener, TcpStream},
};
#[cfg(feature = "tls")]
use crate::async_rustls::{rustls, TlsAcceptor, TlsConnector, TlsStream};
use crate::{
codec::Codec,
connection::{Conn, Connection, ToConn},
endpoint::Endpoint,
listener::{ConnListener, Listener, ToListener},
stream::{ReadStream, WriteStream},
Result,
};
use super::tcp::TcpConfig;
/// TLS configuration
#[derive(Clone)]
pub struct ServerTlsConfig {
pub tcp_config: TcpConfig,
pub server_config: rustls::ServerConfig,
}
#[derive(Clone)]
pub struct ClientTlsConfig {
pub tcp_config: TcpConfig,
pub client_config: rustls::ClientConfig,
pub dns_name: String,
}
/// TLS network connection implementation of the [`Connection`] trait.
pub struct TlsConn<C> {
read_stream: Mutex<ReadStream<ReadHalf<TlsStream<TcpStream>>, C>>,
write_stream: Mutex<WriteStream<WriteHalf<TlsStream<TcpStream>>, C>>,
peer_endpoint: Endpoint,
local_endpoint: Endpoint,
}
impl<C> TlsConn<C>
where
C: Codec + Clone,
{
/// Creates a new TlsConn
pub fn new(
conn: TlsStream<TcpStream>,
codec: C,
peer_endpoint: Endpoint,
local_endpoint: Endpoint,
) -> Self {
let (read, write) = split(conn);
let read_stream = Mutex::new(ReadStream::new(read, codec.clone()));
let write_stream = Mutex::new(WriteStream::new(write, codec));
Self {
read_stream,
write_stream,
peer_endpoint,
local_endpoint,
}
}
}
#[async_trait]
impl<C> Connection for TlsConn<C>
where
C: Clone + Codec,
{
type Item = C::Item;
fn peer_endpoint(&self) -> Result<Endpoint> {
Ok(self.peer_endpoint.clone())
}
fn local_endpoint(&self) -> Result<Endpoint> {
Ok(self.local_endpoint.clone())
}
async fn recv(&self) -> Result<Self::Item> {
self.read_stream.lock().await.recv().await
}
async fn send(&self, msg: Self::Item) -> Result<()> {
self.write_stream.lock().await.send(msg).await
}
}
/// Connects to the given TLS address and port.
pub async fn dial<C>(endpoint: &Endpoint, config: ClientTlsConfig, codec: C) -> Result<TlsConn<C>>
where
C: Codec + Clone,
{
let addr = SocketAddr::try_from(endpoint.clone())?;
let connector = TlsConnector::from(Arc::new(config.client_config.clone()));
let socket = TcpStream::connect(addr).await?;
socket.set_nodelay(config.tcp_config.nodelay)?;
let peer_endpoint = socket.peer_addr().map(Endpoint::new_tls_addr)?;
let local_endpoint = socket.local_addr().map(Endpoint::new_tls_addr)?;
let altname = pki_types::ServerName::try_from(config.dns_name.clone())?;
let conn = connector.connect(altname, socket).await?;
Ok(TlsConn::new(
TlsStream::Client(conn),
codec,
peer_endpoint,
local_endpoint,
))
}
/// Tls network listener implementation of the `Listener` [`ConnListener`] trait.
pub struct TlsListener<C> {
inner: TcpListener,
acceptor: TlsAcceptor,
config: ServerTlsConfig,
codec: C,
}
impl<C> TlsListener<C>
where
C: Codec + Clone,
{
pub fn new(
acceptor: TlsAcceptor,
listener: TcpListener,
config: ServerTlsConfig,
codec: C,
) -> Self {
Self {
inner: listener,
acceptor,
config: config.clone(),
codec,
}
}
}
#[async_trait]
impl<C> ConnListener for TlsListener<C>
where
C: Clone + Codec,
{
type Item = C::Item;
fn local_endpoint(&self) -> Result<Endpoint> {
Ok(Endpoint::new_tls_addr(self.inner.local_addr()?))
}
async fn accept(&self) -> Result<Conn<C::Item>> {
let (socket, _) = self.inner.accept().await?;
socket.set_nodelay(self.config.tcp_config.nodelay)?;
let peer_endpoint = socket.peer_addr().map(Endpoint::new_tls_addr)?;
let local_endpoint = socket.local_addr().map(Endpoint::new_tls_addr)?;
let conn = self.acceptor.accept(socket).await?;
Ok(Box::new(TlsConn::new(
TlsStream::Server(conn),
self.codec.clone(),
peer_endpoint,
local_endpoint,
)))
}
}
/// Listens on the given TLS address and port.
pub async fn listen<C>(
endpoint: &Endpoint,
config: ServerTlsConfig,
codec: C,
) -> Result<TlsListener<C>>
where
C: Clone + Codec,
{
let addr = SocketAddr::try_from(endpoint.clone())?;
let acceptor = TlsAcceptor::from(Arc::new(config.server_config.clone()));
let listener = TcpListener::bind(addr).await?;
Ok(TlsListener::new(acceptor, listener, config, codec))
}
impl<C> From<TlsListener<C>> for Listener<C::Item>
where
C: Codec + Clone,
{
fn from(listener: TlsListener<C>) -> Self {
Box::new(listener)
}
}
impl<C> ToConn for TlsConn<C>
where
C: Codec + Clone,
{
type Item = C::Item;
fn to_conn(self) -> Conn<Self::Item> {
Box::new(self)
}
}
impl<C> ToListener for TlsListener<C>
where
C: Clone + Codec,
{
type Item = C::Item;
fn to_listener(self) -> Listener<Self::Item> {
self.into()
}
}
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