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|
use std::sync::Arc;
use async_rustls::{rustls, TlsAcceptor, TlsConnector, TlsStream};
use async_trait::async_trait;
use smol::{
io::{split, AsyncReadExt, AsyncWriteExt, ReadHalf, WriteHalf},
lock::Mutex,
net::{TcpListener, TcpStream},
};
use crate::{
connection::{Connection, ToConn},
endpoint::{Addr, Endpoint, Port},
listener::{ConnListener, ToListener},
Error, Result,
};
/// TLS network connection implementation of the [`Connection`] trait.
pub struct TlsConn {
inner: TcpStream,
read: Mutex<ReadHalf<TlsStream<TcpStream>>>,
write: Mutex<WriteHalf<TlsStream<TcpStream>>>,
}
impl TlsConn {
/// Creates a new TlsConn
pub fn new(sock: TcpStream, conn: TlsStream<TcpStream>) -> Self {
let (read, write) = split(conn);
Self {
inner: sock,
read: Mutex::new(read),
write: Mutex::new(write),
}
}
}
#[async_trait]
impl Connection for TlsConn {
fn peer_endpoint(&self) -> Result<Endpoint> {
Ok(Endpoint::new_tls_addr(&self.inner.peer_addr()?))
}
fn local_endpoint(&self) -> Result<Endpoint> {
Ok(Endpoint::new_tls_addr(&self.inner.local_addr()?))
}
async fn read(&self, buf: &mut [u8]) -> Result<usize> {
self.read.lock().await.read(buf).await.map_err(Error::from)
}
async fn write(&self, buf: &[u8]) -> Result<usize> {
self.write
.lock()
.await
.write(buf)
.await
.map_err(Error::from)
}
}
/// Connects to the given TLS address and port.
pub async fn dial_tls(
addr: &Addr,
port: &Port,
config: rustls::ClientConfig,
dns_name: &str,
) -> Result<TlsConn> {
let address = format!("{}:{}", addr, port);
let connector = TlsConnector::from(Arc::new(config));
let sock = TcpStream::connect(&address).await?;
sock.set_nodelay(true)?;
let altname = rustls::ServerName::try_from(dns_name)?;
let conn = connector.connect(altname, sock.clone()).await?;
Ok(TlsConn::new(sock, TlsStream::Client(conn)))
}
/// Connects to the given TLS endpoint, returns `Conn` ([`Connection`]).
pub async fn dial(
endpoint: &Endpoint,
config: rustls::ClientConfig,
dns_name: &str,
) -> Result<Box<dyn Connection>> {
match endpoint {
Endpoint::Tcp(..) | Endpoint::Tls(..) => {}
_ => return Err(Error::InvalidEndpoint(endpoint.to_string())),
}
dial_tls(endpoint.addr()?, endpoint.port()?, config, dns_name)
.await
.map(|c| Box::new(c) as Box<dyn Connection>)
}
/// Tls network listener implementation of the `Listener` [`ConnListener`] trait.
pub struct TlsListener {
acceptor: TlsAcceptor,
listener: TcpListener,
}
#[async_trait]
impl ConnListener for TlsListener {
fn local_endpoint(&self) -> Result<Endpoint> {
Ok(Endpoint::new_tls_addr(&self.listener.local_addr()?))
}
async fn accept(&self) -> Result<Box<dyn Connection>> {
let (sock, _) = self.listener.accept().await?;
sock.set_nodelay(true)?;
let conn = self.acceptor.accept(sock.clone()).await?;
Ok(Box::new(TlsConn::new(sock, TlsStream::Server(conn))))
}
}
/// Listens on the given TLS address and port.
pub async fn listen_tls(
addr: &Addr,
port: &Port,
config: rustls::ServerConfig,
) -> Result<TlsListener> {
let address = format!("{}:{}", addr, port);
let acceptor = TlsAcceptor::from(Arc::new(config));
let listener = TcpListener::bind(&address).await?;
Ok(TlsListener { acceptor, listener })
}
/// Listens on the given TLS endpoint, returns `Listener` [`ConnListener`].
pub async fn listen(
endpoint: &Endpoint,
config: rustls::ServerConfig,
) -> Result<Box<dyn ConnListener>> {
match endpoint {
Endpoint::Tcp(..) | Endpoint::Tls(..) => {}
_ => return Err(Error::InvalidEndpoint(endpoint.to_string())),
}
listen_tls(endpoint.addr()?, endpoint.port()?, config)
.await
.map(|l| Box::new(l) as Box<dyn ConnListener>)
}
impl From<TlsStream<TcpStream>> for Box<dyn Connection> {
fn from(conn: TlsStream<TcpStream>) -> Self {
Box::new(TlsConn::new(conn.get_ref().0.clone(), conn))
}
}
impl From<TlsListener> for Box<dyn ConnListener> {
fn from(listener: TlsListener) -> Self {
Box::new(listener)
}
}
impl ToConn for TlsStream<TcpStream> {
fn to_conn(self) -> Box<dyn Connection> {
self.into()
}
}
impl ToConn for TlsConn {
fn to_conn(self) -> Box<dyn Connection> {
Box::new(self)
}
}
impl ToListener for TlsListener {
fn to_listener(self) -> Box<dyn ConnListener> {
self.into()
}
}
|
