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|
use super::*;
use crate::common::IoSession;
/// A wrapper around an underlying raw stream which implements the TLS or SSL
/// protocol.
#[derive(Debug)]
pub struct TlsStream<IO> {
pub(crate) io: IO,
pub(crate) session: ServerConnection,
pub(crate) state: TlsState,
}
impl<IO> TlsStream<IO> {
#[inline]
pub fn get_ref(&self) -> (&IO, &ServerConnection) {
(&self.io, &self.session)
}
#[inline]
pub fn get_mut(&mut self) -> (&mut IO, &mut ServerConnection) {
(&mut self.io, &mut self.session)
}
#[inline]
pub fn into_inner(self) -> (IO, ServerConnection) {
(self.io, self.session)
}
}
impl<IO> IoSession for TlsStream<IO> {
type Io = IO;
type Session = ServerConnection;
#[inline]
fn skip_handshake(&self) -> bool {
false
}
#[inline]
fn get_mut(&mut self) -> (&mut TlsState, &mut Self::Io, &mut Self::Session) {
(&mut self.state, &mut self.io, &mut self.session)
}
#[inline]
fn into_io(self) -> Self::Io {
self.io
}
}
impl<IO> AsyncRead for TlsStream<IO>
where
IO: AsyncRead + AsyncWrite + Unpin,
{
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &mut [u8],
) -> Poll<io::Result<usize>> {
let this = self.get_mut();
let mut stream =
Stream::new(&mut this.io, &mut this.session).set_eof(!this.state.readable());
match &this.state {
TlsState::Stream | TlsState::WriteShutdown => {
match stream.as_mut_pin().poll_read(cx, buf) {
Poll::Ready(Ok(n)) => {
if n == 0 || stream.eof {
this.state.shutdown_read();
}
Poll::Ready(Ok(n))
}
Poll::Ready(Err(err)) if err.kind() == io::ErrorKind::UnexpectedEof => {
this.state.shutdown_read();
Poll::Ready(Err(err))
}
output => output,
}
}
TlsState::ReadShutdown | TlsState::FullyShutdown => Poll::Ready(Ok(0)),
#[cfg(feature = "early-data")]
s => unreachable!("server TLS can not hit this state: {:?}", s),
}
}
}
impl<IO> AsyncWrite for TlsStream<IO>
where
IO: AsyncRead + AsyncWrite + Unpin,
{
/// Note: that it does not guarantee the final data to be sent.
/// To be cautious, you must manually call `flush`.
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<io::Result<usize>> {
let this = self.get_mut();
let mut stream =
Stream::new(&mut this.io, &mut this.session).set_eof(!this.state.readable());
stream.as_mut_pin().poll_write(cx, buf)
}
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
let this = self.get_mut();
let mut stream =
Stream::new(&mut this.io, &mut this.session).set_eof(!this.state.readable());
stream.as_mut_pin().poll_flush(cx)
}
fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
if self.state.writeable() {
self.session.send_close_notify();
self.state.shutdown_write();
}
let this = self.get_mut();
let mut stream =
Stream::new(&mut this.io, &mut this.session).set_eof(!this.state.readable());
stream.as_mut_pin().poll_close(cx)
}
fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[io::IoSlice<'_>],
) -> Poll<io::Result<usize>> {
let this = self.get_mut();
let mut stream =
Stream::new(&mut this.io, &mut this.session).set_eof(!this.state.readable());
stream.as_mut_pin().poll_write_vectored(cx, bufs)
}
}
#[cfg(unix)]
impl<IO> AsRawFd for TlsStream<IO>
where
IO: AsRawFd,
{
fn as_raw_fd(&self) -> RawFd {
self.get_ref().0.as_raw_fd()
}
}
#[cfg(windows)]
impl<IO> AsRawSocket for TlsStream<IO>
where
IO: AsRawSocket,
{
fn as_raw_socket(&self) -> RawSocket {
self.get_ref().0.as_raw_socket()
}
}
|
