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[workspace] [workspace]
members = [ members = [
"tokio-native-tls" "tokio-native-tls",
"tokio-rustls"
] ]

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[package]
name = "tokio-rustls"
version = "0.12.2"
authors = ["quininer kel <quininer@live.com>"]
license = "MIT/Apache-2.0"
repository = "https://github.com/tokio-rs/tls"
homepage = "https://github.com/tokio-rs/tls"
documentation = "https://docs.rs/tokio-rustls"
readme = "README.md"
description = "Asynchronous TLS/SSL streams for Tokio using Rustls."
categories = ["asynchronous", "cryptography", "network-programming"]
edition = "2018"
[dependencies]
tokio = "0.2.0"
futures-core = "0.3.1"
rustls = "0.16"
webpki = "0.21"
bytes = { version = "0.5", optional = true }
[features]
early-data = []
dangerous_configuration = ["rustls/dangerous_configuration"]
unstable = ["bytes"]
[dev-dependencies]
tokio = { version = "0.2.0", features = ["macros", "net", "io-util", "rt-core", "time"] }
futures-util = "0.3.1"
lazy_static = "1"
webpki-roots = "0.18"

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Apache License
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APPENDIX: How to apply the Apache License to your work.
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Copyright 2017 quininer kel
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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Copyright (c) 2017 quininer kel
Permission is hereby granted, free of charge, to any
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The above copyright notice and this permission notice
shall be included in all copies or substantial portions
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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# tokio-rustls
[![github actions](https://github.com/tokio-rs/tls/workflows/Rust/badge.svg)](https://github.com/tokio-rs/tls/actions)
[![crates](https://img.shields.io/crates/v/tokio-rustls.svg)](https://crates.io/crates/tokio-rustls)
[![license](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/tokio-rs/tls/blob/master/tokio-rustls/LICENSE-MIT)
[![license](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/tokio-rs/tls/blob/master/tokio-rustls/LICENSE-APACHE)
[![docs.rs](https://docs.rs/tokio-rustls/badge.svg)](https://docs.rs/tokio-rustls/)
Asynchronous TLS/SSL streams for [Tokio](https://tokio.rs/) using
[Rustls](https://github.com/ctz/rustls).
### Basic Structure of a Client
```rust
use webpki::DNSNameRef;
use tokio_rustls::{ TlsConnector, rustls::ClientConfig };
// ...
let mut config = ClientConfig::new();
config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
let config = TlsConnector::from(Arc::new(config));
let dnsname = DNSNameRef::try_from_ascii_str("www.rust-lang.org").unwrap();
let stream = TcpStream::connect(&addr).await?;
let mut stream = config.connect(dnsname, stream).await?;
// ...
```
### Client Example Program
See [examples/client](examples/client/src/main.rs). You can run it with:
```sh
cd examples/client
cargo run -- hsts.badssl.com
```
### Server Example Program
See [examples/server](examples/server/src/main.rs). You can run it with:
```sh
cd examples/server
cargo run -- 127.0.0.1 --cert mycert.der --key mykey.der
```
### License & Origin
This project is licensed under either of
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or
http://opensource.org/licenses/MIT)
at your option.
This started as a fork of [tokio-tls](https://github.com/tokio-rs/tokio-tls).
### Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in tokio-rustls by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.

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[package]
name = "client"
version = "0.1.0"
authors = ["quininer <quininer@live.com>"]
edition = "2018"
[dependencies]
futures-util = "0.3"
tokio = { version = "0.2", features = [ "net", "io-std", "io-util", "rt-threaded" ] }
structopt = "0.2"
tokio-rustls = { path = "../.." }
webpki-roots = "0.18"

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use std::io;
use std::fs::File;
use std::path::PathBuf;
use std::sync::Arc;
use std::net::ToSocketAddrs;
use std::io::BufReader;
use futures_util::future;
use structopt::StructOpt;
use tokio::runtime;
use tokio::net::TcpStream;
use tokio::io::{
AsyncWriteExt,
copy, split,
stdin as tokio_stdin, stdout as tokio_stdout
};
use tokio_rustls::{ TlsConnector, rustls::ClientConfig, webpki::DNSNameRef };
#[derive(StructOpt)]
struct Options {
host: String,
/// port
#[structopt(short="p", long="port", default_value="443")]
port: u16,
/// domain
#[structopt(short="d", long="domain")]
domain: Option<String>,
/// cafile
#[structopt(short="c", long="cafile", parse(from_os_str))]
cafile: Option<PathBuf>
}
fn main() -> io::Result<()> {
let options = Options::from_args();
let addr = (options.host.as_str(), options.port)
.to_socket_addrs()?
.next()
.ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?;
let domain = options.domain.unwrap_or(options.host);
let content = format!(
"GET / HTTP/1.0\r\nHost: {}\r\n\r\n",
domain
);
let mut runtime = runtime::Builder::new()
.basic_scheduler()
.enable_io()
.build()?;
let mut config = ClientConfig::new();
if let Some(cafile) = &options.cafile {
let mut pem = BufReader::new(File::open(cafile)?);
config.root_store.add_pem_file(&mut pem)
.map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid cert"))?;
} else {
config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
}
let connector = TlsConnector::from(Arc::new(config));
let fut = async {
let stream = TcpStream::connect(&addr).await?;
let (mut stdin, mut stdout) = (tokio_stdin(), tokio_stdout());
let domain = DNSNameRef::try_from_ascii_str(&domain)
.map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid dnsname"))?;
let mut stream = connector.connect(domain, stream).await?;
stream.write_all(content.as_bytes()).await?;
let (mut reader, mut writer) = split(stream);
future::select(
copy(&mut reader, &mut stdout),
copy(&mut stdin, &mut writer)
)
.await
.factor_first()
.0?;
Ok(())
};
runtime.block_on(fut)
}

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[package]
name = "server"
version = "0.1.0"
authors = ["quininer <quininer@live.com>"]
edition = "2018"
[dependencies]
futures-util = "0.3"
tokio = { version = "0.2", features = [ "net", "io-util", "rt-threaded" ] }
structopt = "0.2"
tokio-rustls = { path = "../.." }

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use std::fs::File;
use std::sync::Arc;
use std::net::ToSocketAddrs;
use std::path::{ PathBuf, Path };
use std::io::{ self, BufReader };
use futures_util::future::TryFutureExt;
use structopt::StructOpt;
use tokio::runtime;
use tokio::net::TcpListener;
use tokio::io::{ AsyncWriteExt, copy, split };
use tokio_rustls::rustls::{ Certificate, NoClientAuth, PrivateKey, ServerConfig };
use tokio_rustls::rustls::internal::pemfile::{ certs, rsa_private_keys };
use tokio_rustls::TlsAcceptor;
#[derive(StructOpt)]
struct Options {
addr: String,
/// cert file
#[structopt(short="c", long="cert", parse(from_os_str))]
cert: PathBuf,
/// key file
#[structopt(short="k", long="key", parse(from_os_str))]
key: PathBuf,
/// echo mode
#[structopt(short="e", long="echo-mode")]
echo: bool
}
fn load_certs(path: &Path) -> io::Result<Vec<Certificate>> {
certs(&mut BufReader::new(File::open(path)?))
.map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid cert"))
}
fn load_keys(path: &Path) -> io::Result<Vec<PrivateKey>> {
rsa_private_keys(&mut BufReader::new(File::open(path)?))
.map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid key"))
}
fn main() -> io::Result<()> {
let options = Options::from_args();
let addr = options.addr.to_socket_addrs()?
.next()
.ok_or_else(|| io::Error::from(io::ErrorKind::AddrNotAvailable))?;
let certs = load_certs(&options.cert)?;
let mut keys = load_keys(&options.key)?;
let flag_echo = options.echo;
let mut runtime = runtime::Builder::new()
.threaded_scheduler()
.enable_io()
.build()?;
let handle = runtime.handle().clone();
let mut config = ServerConfig::new(NoClientAuth::new());
config.set_single_cert(certs, keys.remove(0))
.map_err(|err| io::Error::new(io::ErrorKind::InvalidInput, err))?;
let acceptor = TlsAcceptor::from(Arc::new(config));
let fut = async {
let mut listener = TcpListener::bind(&addr).await?;
loop {
let (stream, peer_addr) = listener.accept().await?;
let acceptor = acceptor.clone();
let fut = async move {
let mut stream = acceptor.accept(stream).await?;
if flag_echo {
let (mut reader, mut writer) = split(stream);
let n = copy(&mut reader, &mut writer).await?;
writer.flush().await?;
println!("Echo: {} - {}", peer_addr, n);
} else {
stream.write_all(
&b"HTTP/1.0 200 ok\r\n\
Connection: close\r\n\
Content-length: 12\r\n\
\r\n\
Hello world!"[..]
).await?;
stream.flush().await?;
println!("Hello: {}", peer_addr);
}
Ok(()) as io::Result<()>
};
handle.spawn(fut.unwrap_or_else(|err| eprintln!("{:?}", err)));
}
};
runtime.block_on(fut)
}

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use super::*;
use rustls::Session;
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: ClientSession,
pub(crate) state: TlsState,
}
impl<IO> TlsStream<IO> {
#[inline]
pub fn get_ref(&self) -> (&IO, &ClientSession) {
(&self.io, &self.session)
}
#[inline]
pub fn get_mut(&mut self) -> (&mut IO, &mut ClientSession) {
(&mut self.io, &mut self.session)
}
#[inline]
pub fn into_inner(self) -> (IO, ClientSession) {
(self.io, self.session)
}
}
impl<IO> IoSession for TlsStream<IO> {
type Io = IO;
type Session = ClientSession;
#[inline]
fn skip_handshake(&self) -> bool {
self.state.is_early_data()
}
#[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,
{
#[cfg(feature = "unstable")]
unsafe fn prepare_uninitialized_buffer(&self, _buf: &mut [std::mem::MaybeUninit<u8>]) -> bool {
false
}
fn poll_read(self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut [u8]) -> Poll<io::Result<usize>> {
match self.state {
#[cfg(feature = "early-data")]
TlsState::EarlyData(..) => Poll::Pending,
TlsState::Stream | TlsState::WriteShutdown => {
let this = self.get_mut();
let mut stream = Stream::new(&mut this.io, &mut this.session)
.set_eof(!this.state.readable());
match stream.as_mut_pin().poll_read(cx, buf) {
Poll::Ready(Ok(0)) => {
this.state.shutdown_read();
Poll::Ready(Ok(0))
},
Poll::Ready(Ok(n)) => Poll::Ready(Ok(n)),
Poll::Ready(Err(ref e)) if e.kind() == io::ErrorKind::ConnectionAborted => {
this.state.shutdown_read();
if this.state.writeable() {
stream.session.send_close_notify();
this.state.shutdown_write();
}
Poll::Ready(Ok(0))
},
output => output
}
}
TlsState::ReadShutdown | TlsState::FullyShutdown => Poll::Ready(Ok(0)),
}
}
}
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());
match this.state {
#[cfg(feature = "early-data")]
TlsState::EarlyData(ref mut pos, ref mut data) => {
use futures_core::ready;
use std::io::Write;
// write early data
if let Some(mut early_data) = stream.session.early_data() {
let len = match early_data.write(buf) {
Ok(n) => n,
Err(ref err) if err.kind() == io::ErrorKind::WouldBlock =>
return Poll::Pending,
Err(err) => return Poll::Ready(Err(err))
};
if len != 0 {
data.extend_from_slice(&buf[..len]);
return Poll::Ready(Ok(len));
}
}
// complete handshake
while stream.session.is_handshaking() {
ready!(stream.handshake(cx))?;
}
// write early data (fallback)
if !stream.session.is_early_data_accepted() {
while *pos < data.len() {
let len = ready!(stream.as_mut_pin().poll_write(cx, &data[*pos..]))?;
*pos += len;
}
}
// end
this.state = TlsState::Stream;
stream.as_mut_pin().poll_write(cx, buf)
}
_ => 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());
#[cfg(feature = "early-data")] {
use futures_core::ready;
if let TlsState::EarlyData(ref mut pos, ref mut data) = this.state {
// complete handshake
while stream.session.is_handshaking() {
ready!(stream.handshake(cx))?;
}
// write early data (fallback)
if !stream.session.is_early_data_accepted() {
while *pos < data.len() {
let len = ready!(stream.as_mut_pin().poll_write(cx, &data[*pos..]))?;
*pos += len;
}
}
this.state = TlsState::Stream;
}
}
stream.as_mut_pin().poll_flush(cx)
}
fn poll_shutdown(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
if self.state.writeable() {
self.session.send_close_notify();
self.state.shutdown_write();
}
#[cfg(feature = "early-data")] {
// we skip the handshake
if let TlsState::EarlyData(..) = self.state {
return Pin::new(&mut self.io).poll_shutdown(cx);
}
}
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_shutdown(cx)
}
}

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use std::{ io, mem };
use std::pin::Pin;
use std::future::Future;
use std::task::{ Context, Poll };
use futures_core::future::FusedFuture;
use tokio::io::{ AsyncRead, AsyncWrite };
use rustls::Session;
use crate::common::{ TlsState, Stream };
pub(crate) trait IoSession {
type Io;
type Session;
fn skip_handshake(&self) -> bool;
fn get_mut(&mut self) -> (&mut TlsState, &mut Self::Io, &mut Self::Session);
fn into_io(self) -> Self::Io;
}
pub(crate) enum MidHandshake<IS> {
Handshaking(IS),
End,
}
impl<IS> FusedFuture for MidHandshake<IS>
where
IS: IoSession + Unpin,
IS::Io: AsyncRead + AsyncWrite + Unpin,
IS::Session: Session + Unpin
{
fn is_terminated(&self) -> bool {
if let MidHandshake::End = self {
true
} else {
false
}
}
}
impl<IS> Future for MidHandshake<IS>
where
IS: IoSession + Unpin,
IS::Io: AsyncRead + AsyncWrite + Unpin,
IS::Session: Session + Unpin
{
type Output = Result<IS, (io::Error, IS::Io)>;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
let this = self.get_mut();
if let MidHandshake::Handshaking(mut stream) = mem::replace(this, MidHandshake::End) {
if !stream.skip_handshake() {
let (state, io, session) = stream.get_mut();
let mut tls_stream = Stream::new(io, session)
.set_eof(!state.readable());
macro_rules! try_poll {
( $e:expr ) => {
match $e {
Poll::Ready(Ok(_)) => (),
Poll::Ready(Err(err)) => return Poll::Ready(Err((err, stream.into_io()))),
Poll::Pending => {
*this = MidHandshake::Handshaking(stream);
return Poll::Pending;
}
}
}
}
while tls_stream.session.is_handshaking() {
try_poll!(tls_stream.handshake(cx));
}
while tls_stream.session.wants_write() {
try_poll!(tls_stream.write_io(cx));
}
}
Poll::Ready(Ok(stream))
} else {
panic!("unexpected polling after handshake")
}
}
}

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mod handshake;
#[cfg(feature = "unstable")]
mod vecbuf;
use std::pin::Pin;
use std::task::{ Poll, Context };
use std::io::{ self, Read };
use rustls::Session;
use tokio::io::{ AsyncRead, AsyncWrite };
use futures_core as futures;
pub(crate) use handshake::{ IoSession, MidHandshake };
#[derive(Debug)]
pub enum TlsState {
#[cfg(feature = "early-data")]
EarlyData(usize, Vec<u8>),
Stream,
ReadShutdown,
WriteShutdown,
FullyShutdown,
}
impl TlsState {
#[inline]
pub fn shutdown_read(&mut self) {
match *self {
TlsState::WriteShutdown | TlsState::FullyShutdown =>
*self = TlsState::FullyShutdown,
_ => *self = TlsState::ReadShutdown,
}
}
#[inline]
pub fn shutdown_write(&mut self) {
match *self {
TlsState::ReadShutdown | TlsState::FullyShutdown =>
*self = TlsState::FullyShutdown,
_ => *self = TlsState::WriteShutdown,
}
}
#[inline]
pub fn writeable(&self) -> bool {
match *self {
TlsState::WriteShutdown | TlsState::FullyShutdown => false,
_ => true,
}
}
#[inline]
pub fn readable(&self) -> bool {
match self {
TlsState::ReadShutdown | TlsState::FullyShutdown => false,
_ => true,
}
}
#[inline]
#[cfg(feature = "early-data")]
pub fn is_early_data(&self) -> bool {
match self {
TlsState::EarlyData(..) => true,
_ => false
}
}
#[inline]
#[cfg(not(feature = "early-data"))]
pub const fn is_early_data(&self) -> bool {
false
}
}
pub struct Stream<'a, IO, S> {
pub io: &'a mut IO,
pub session: &'a mut S,
pub eof: bool
}
impl<'a, IO: AsyncRead + AsyncWrite + Unpin, S: Session> Stream<'a, IO, S> {
pub fn new(io: &'a mut IO, session: &'a mut S) -> Self {
Stream {
io,
session,
// The state so far is only used to detect EOF, so either Stream
// or EarlyData state should both be all right.
eof: false,
}
}
pub fn set_eof(mut self, eof: bool) -> Self {
self.eof = eof;
self
}
pub fn as_mut_pin(&mut self) -> Pin<&mut Self> {
Pin::new(self)
}
pub fn process_new_packets(&mut self, cx: &mut Context) -> io::Result<()> {
self.session.process_new_packets()
.map_err(|err| {
// In case we have an alert to send describing this error,
// try a last-gasp write -- but don't predate the primary
// error.
let _ = self.write_io(cx);
io::Error::new(io::ErrorKind::InvalidData, err)
})
}
pub fn read_io(&mut self, cx: &mut Context) -> Poll<io::Result<usize>> {
struct Reader<'a, 'b, T> {
io: &'a mut T,
cx: &'a mut Context<'b>
}
impl<'a, 'b, T: AsyncRead + Unpin> Read for Reader<'a, 'b, T> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
match Pin::new(&mut self.io).poll_read(self.cx, buf) {
Poll::Ready(result) => result,
Poll::Pending => Err(io::ErrorKind::WouldBlock.into())
}
}
}
let mut reader = Reader { io: self.io, cx };
let n = match self.session.read_tls(&mut reader) {
Ok(n) => n,
Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => return Poll::Pending,
Err(err) => return Poll::Ready(Err(err))
};
Poll::Ready(Ok(n))
}
#[cfg(not(feature = "unstable"))]
pub fn write_io(&mut self, cx: &mut Context) -> Poll<io::Result<usize>> {
use std::io::Write;
struct Writer<'a, 'b, T> {
io: &'a mut T,
cx: &'a mut Context<'b>
}
impl<'a, 'b, T: AsyncWrite + Unpin> Write for Writer<'a, 'b, T> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
match Pin::new(&mut self.io).poll_write(self.cx, buf) {
Poll::Ready(result) => result,
Poll::Pending => Err(io::ErrorKind::WouldBlock.into())
}
}
fn flush(&mut self) -> io::Result<()> {
match Pin::new(&mut self.io).poll_flush(self.cx) {
Poll::Ready(result) => result,
Poll::Pending => Err(io::ErrorKind::WouldBlock.into())
}
}
}
let mut writer = Writer { io: self.io, cx };
match self.session.write_tls(&mut writer) {
Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => Poll::Pending,
result => Poll::Ready(result)
}
}
#[cfg(feature = "unstable")]
pub fn write_io(&mut self, cx: &mut Context) -> Poll<io::Result<usize>> {
use rustls::WriteV;
struct Writer<'a, 'b, T> {
io: &'a mut T,
cx: &'a mut Context<'b>
}
impl<'a, 'b, T: AsyncWrite + Unpin> WriteV for Writer<'a, 'b, T> {
fn writev(&mut self, vbuf: &[&[u8]]) -> io::Result<usize> {
use vecbuf::VecBuf;
let mut vbuf = VecBuf::new(vbuf);
match Pin::new(&mut self.io).poll_write_buf(self.cx, &mut vbuf) {
Poll::Ready(result) => result,
Poll::Pending => Err(io::ErrorKind::WouldBlock.into())
}
}
}
let mut writer = Writer { io: self.io, cx };
match self.session.writev_tls(&mut writer) {
Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => Poll::Pending,
result => Poll::Ready(result)
}
}
pub fn handshake(&mut self, cx: &mut Context) -> Poll<io::Result<(usize, usize)>> {
let mut wrlen = 0;
let mut rdlen = 0;
loop {
let mut write_would_block = false;
let mut read_would_block = false;
while self.session.wants_write() {
match self.write_io(cx) {
Poll::Ready(Ok(n)) => wrlen += n,
Poll::Pending => {
write_would_block = true;
break
},
Poll::Ready(Err(err)) => return Poll::Ready(Err(err))
}
}
while !self.eof && self.session.wants_read() {
match self.read_io(cx) {
Poll::Ready(Ok(0)) => self.eof = true,
Poll::Ready(Ok(n)) => rdlen += n,
Poll::Pending => {
read_would_block = true;
break
},
Poll::Ready(Err(err)) => return Poll::Ready(Err(err))
}
}
self.process_new_packets(cx)?;
return match (self.eof, self.session.is_handshaking()) {
(true, true) => {
let err = io::Error::new(io::ErrorKind::UnexpectedEof, "tls handshake eof");
Poll::Ready(Err(err))
},
(_, false) => Poll::Ready(Ok((rdlen, wrlen))),
(_, true) if write_would_block || read_would_block => if rdlen != 0 || wrlen != 0 {
Poll::Ready(Ok((rdlen, wrlen)))
} else {
Poll::Pending
},
(..) => continue
}
}
}
}
impl<'a, IO: AsyncRead + AsyncWrite + Unpin, S: Session> AsyncRead for Stream<'a, IO, S> {
fn poll_read(mut self: Pin<&mut Self>, cx: &mut Context, buf: &mut [u8]) -> Poll<io::Result<usize>> {
let mut pos = 0;
while pos != buf.len() {
let mut would_block = false;
// read a packet
while self.session.wants_read() {
match self.read_io(cx) {
Poll::Ready(Ok(0)) => {
self.eof = true;
break
},
Poll::Ready(Ok(_)) => (),
Poll::Pending => {
would_block = true;
break
},
Poll::Ready(Err(err)) => return Poll::Ready(Err(err))
}
}
self.process_new_packets(cx)?;
return match self.session.read(&mut buf[pos..]) {
Ok(0) if pos == 0 && would_block => Poll::Pending,
Ok(n) if self.eof || would_block => Poll::Ready(Ok(pos + n)),
Ok(n) => {
pos += n;
continue
},
Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => Poll::Pending,
Err(ref err) if err.kind() == io::ErrorKind::ConnectionAborted && pos != 0 =>
Poll::Ready(Ok(pos)),
Err(err) => Poll::Ready(Err(err))
}
}
Poll::Ready(Ok(pos))
}
}
impl<'a, IO: AsyncRead + AsyncWrite + Unpin, S: Session> AsyncWrite for Stream<'a, IO, S> {
fn poll_write(mut self: Pin<&mut Self>, cx: &mut Context, buf: &[u8]) -> Poll<io::Result<usize>> {
let mut pos = 0;
while pos != buf.len() {
let mut would_block = false;
match self.session.write(&buf[pos..]) {
Ok(n) => pos += n,
Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => (),
Err(err) => return Poll::Ready(Err(err))
};
while self.session.wants_write() {
match self.write_io(cx) {
Poll::Ready(Ok(0)) | Poll::Pending => {
would_block = true;
break
},
Poll::Ready(Ok(_)) => (),
Poll::Ready(Err(err)) => return Poll::Ready(Err(err))
}
}
return match (pos, would_block) {
(0, true) => Poll::Pending,
(n, true) => Poll::Ready(Ok(n)),
(_, false) => continue
}
}
Poll::Ready(Ok(pos))
}
fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<io::Result<()>> {
self.session.flush()?;
while self.session.wants_write() {
futures::ready!(self.write_io(cx))?;
}
Pin::new(&mut self.io).poll_flush(cx)
}
fn poll_shutdown(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
while self.session.wants_write() {
futures::ready!(self.write_io(cx))?;
}
Pin::new(&mut self.io).poll_shutdown(cx)
}
}
#[cfg(test)]
mod test_stream;

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use std::pin::Pin;
use std::sync::Arc;
use std::task::{ Poll, Context };
use futures_core::ready;
use futures_util::future::poll_fn;
use futures_util::task::noop_waker_ref;
use tokio::io::{ AsyncRead, AsyncWrite, AsyncReadExt, AsyncWriteExt };
use std::io::{ self, Read, Write, BufReader, Cursor };
use webpki::DNSNameRef;
use rustls::internal::pemfile::{ certs, rsa_private_keys };
use rustls::{
ServerConfig, ClientConfig,
ServerSession, ClientSession,
Session, NoClientAuth
};
use super::Stream;
struct Good<'a>(&'a mut dyn Session);
impl<'a> AsyncRead for Good<'a> {
fn poll_read(mut self: Pin<&mut Self>, _cx: &mut Context<'_>, mut buf: &mut [u8]) -> Poll<io::Result<usize>> {
Poll::Ready(self.0.write_tls(buf.by_ref()))
}
}
impl<'a> AsyncWrite for Good<'a> {
fn poll_write(mut self: Pin<&mut Self>, _cx: &mut Context<'_>, mut buf: &[u8]) -> Poll<io::Result<usize>> {
let len = self.0.read_tls(buf.by_ref())?;
self.0.process_new_packets()
.map_err(|err| io::Error::new(io::ErrorKind::InvalidData, err))?;
Poll::Ready(Ok(len))
}
fn poll_flush(mut self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
self.0.process_new_packets()
.map_err(|err| io::Error::new(io::ErrorKind::InvalidData, err))?;
Poll::Ready(Ok(()))
}
fn poll_shutdown(mut self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
self.0.send_close_notify();
Poll::Ready(Ok(()))
}
}
struct Pending;
impl AsyncRead for Pending {
fn poll_read(self: Pin<&mut Self>, _cx: &mut Context<'_>, _: &mut [u8]) -> Poll<io::Result<usize>> {
Poll::Pending
}
}
impl AsyncWrite for Pending {
fn poll_write(self: Pin<&mut Self>, _cx: &mut Context<'_>, _buf: &[u8]) -> Poll<io::Result<usize>> {
Poll::Pending
}
fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
Poll::Ready(Ok(()))
}
fn poll_shutdown(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
Poll::Ready(Ok(()))
}
}
struct Eof;
impl AsyncRead for Eof {
fn poll_read(self: Pin<&mut Self>, _cx: &mut Context<'_>, _: &mut [u8]) -> Poll<io::Result<usize>> {
Poll::Ready(Ok(0))
}
}
impl AsyncWrite for Eof {
fn poll_write(self: Pin<&mut Self>, _cx: &mut Context<'_>, buf: &[u8]) -> Poll<io::Result<usize>> {
Poll::Ready(Ok(buf.len()))
}
fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
Poll::Ready(Ok(()))
}
fn poll_shutdown(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
Poll::Ready(Ok(()))
}
}
#[tokio::test]
async fn stream_good() -> io::Result<()> {
const FILE: &'static [u8] = include_bytes!("../../README.md");
let (mut server, mut client) = make_pair();
poll_fn(|cx| do_handshake(&mut client, &mut server, cx)).await?;
io::copy(&mut Cursor::new(FILE), &mut server)?;
{
let mut good = Good(&mut server);
let mut stream = Stream::new(&mut good, &mut client);
let mut buf = Vec::new();
stream.read_to_end(&mut buf).await?;
assert_eq!(buf, FILE);
stream.write_all(b"Hello World!").await?;
stream.flush().await?;
}
let mut buf = String::new();
server.read_to_string(&mut buf)?;
assert_eq!(buf, "Hello World!");
Ok(()) as io::Result<()>
}
#[tokio::test]
async fn stream_bad() -> io::Result<()> {
let (mut server, mut client) = make_pair();
poll_fn(|cx| do_handshake(&mut client, &mut server, cx)).await?;
client.set_buffer_limit(1024);
let mut bad = Pending;
let mut stream = Stream::new(&mut bad, &mut client);
assert_eq!(poll_fn(|cx| stream.as_mut_pin().poll_write(cx, &[0x42; 8])).await?, 8);
assert_eq!(poll_fn(|cx| stream.as_mut_pin().poll_write(cx, &[0x42; 8])).await?, 8);
let r = poll_fn(|cx| stream.as_mut_pin().poll_write(cx, &[0x00; 1024])).await?; // fill buffer
assert!(r < 1024);
let mut cx = Context::from_waker(noop_waker_ref());
let ret = stream.as_mut_pin().poll_write(&mut cx, &[0x01]);
assert!(ret.is_pending());
Ok(()) as io::Result<()>
}
#[tokio::test]
async fn stream_handshake() -> io::Result<()> {
let (mut server, mut client) = make_pair();
{
let mut good = Good(&mut server);
let mut stream = Stream::new(&mut good, &mut client);
let (r, w) = poll_fn(|cx| stream.handshake(cx)).await?;
assert!(r > 0);
assert!(w > 0);
poll_fn(|cx| stream.handshake(cx)).await?; // finish server handshake
}
assert!(!server.is_handshaking());
assert!(!client.is_handshaking());
Ok(()) as io::Result<()>
}
#[tokio::test]
async fn stream_handshake_eof() -> io::Result<()> {
let (_, mut client) = make_pair();
let mut bad = Eof;
let mut stream = Stream::new(&mut bad, &mut client);
let mut cx = Context::from_waker(noop_waker_ref());
let r = stream.handshake(&mut cx);
assert_eq!(r.map_err(|err| err.kind()), Poll::Ready(Err(io::ErrorKind::UnexpectedEof)));
Ok(()) as io::Result<()>
}
#[tokio::test]
async fn stream_eof() -> io::Result<()> {
let (mut server, mut client) = make_pair();
poll_fn(|cx| do_handshake(&mut client, &mut server, cx)).await?;
let mut good = Good(&mut server);
let mut stream = Stream::new(&mut good, &mut client).set_eof(true);
let mut buf = Vec::new();
stream.read_to_end(&mut buf).await?;
assert_eq!(buf.len(), 0);
Ok(()) as io::Result<()>
}
fn make_pair() -> (ServerSession, ClientSession) {
const CERT: &str = include_str!("../../tests/end.cert");
const CHAIN: &str = include_str!("../../tests/end.chain");
const RSA: &str = include_str!("../../tests/end.rsa");
let cert = certs(&mut BufReader::new(Cursor::new(CERT))).unwrap();
let mut keys = rsa_private_keys(&mut BufReader::new(Cursor::new(RSA))).unwrap();
let mut sconfig = ServerConfig::new(NoClientAuth::new());
sconfig.set_single_cert(cert, keys.pop().unwrap()).unwrap();
let server = ServerSession::new(&Arc::new(sconfig));
let domain = DNSNameRef::try_from_ascii_str("localhost").unwrap();
let mut cconfig = ClientConfig::new();
let mut chain = BufReader::new(Cursor::new(CHAIN));
cconfig.root_store.add_pem_file(&mut chain).unwrap();
let client = ClientSession::new(&Arc::new(cconfig), domain);
(server, client)
}
fn do_handshake(client: &mut ClientSession, server: &mut ServerSession, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
let mut good = Good(server);
let mut stream = Stream::new(&mut good, client);
while stream.session.is_handshaking() {
ready!(stream.handshake(cx))?;
}
while stream.session.wants_write() {
ready!(stream.write_io(cx))?;
}
Poll::Ready(Ok(()))
}

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use std::io::IoSlice;
use std::cmp::{ self, Ordering };
use bytes::Buf;
pub struct VecBuf<'a, 'b: 'a> {
pos: usize,
cur: usize,
inner: &'a [&'b [u8]]
}
impl<'a, 'b> VecBuf<'a, 'b> {
pub fn new(vbytes: &'a [&'b [u8]]) -> Self {
VecBuf { pos: 0, cur: 0, inner: vbytes }
}
}
impl<'a, 'b> Buf for VecBuf<'a, 'b> {
fn remaining(&self) -> usize {
let sum = self.inner
.iter()
.skip(self.pos)
.map(|bytes| bytes.len())
.sum::<usize>();
sum - self.cur
}
fn bytes(&self) -> &[u8] {
&self.inner[self.pos][self.cur..]
}
fn advance(&mut self, cnt: usize) {
let current = self.inner[self.pos].len();
match (self.cur + cnt).cmp(&current) {
Ordering::Equal => if self.pos + 1 < self.inner.len() {
self.pos += 1;
self.cur = 0;
} else {
self.cur += cnt;
},
Ordering::Greater => {
if self.pos + 1 < self.inner.len() {
self.pos += 1;
}
let remaining = self.cur + cnt - current;
self.advance(remaining);
},
Ordering::Less => self.cur += cnt,
}
}
#[allow(clippy::needless_range_loop)]
fn bytes_vectored<'c>(&'c self, dst: &mut [IoSlice<'c>]) -> usize {
let len = cmp::min(self.inner.len() - self.pos, dst.len());
if len > 0 {
dst[0] = IoSlice::new(self.bytes());
}
for i in 1..len {
dst[i] = IoSlice::new(&self.inner[self.pos + i]);
}
len
}
}
#[cfg(test)]
mod test_vecbuf {
use super::*;
#[test]
fn test_fresh_cursor_vec() {
let mut buf = VecBuf::new(&[b"he", b"llo"]);
assert_eq!(buf.remaining(), 5);
assert_eq!(buf.bytes(), b"he");
buf.advance(1);
assert_eq!(buf.remaining(), 4);
assert_eq!(buf.bytes(), b"e");
buf.advance(1);
assert_eq!(buf.remaining(), 3);
assert_eq!(buf.bytes(), b"llo");
buf.advance(3);
assert_eq!(buf.remaining(), 0);
assert_eq!(buf.bytes(), b"");
}
#[test]
fn test_get_u8() {
let mut buf = VecBuf::new(&[b"\x21z", b"omg"]);
assert_eq!(0x21, buf.get_u8());
}
#[test]
fn test_get_u16() {
let mut buf = VecBuf::new(&[b"\x21\x54z", b"omg"]);
assert_eq!(0x2154, buf.get_u16());
let mut buf = VecBuf::new(&[b"\x21\x54z", b"omg"]);
assert_eq!(0x5421, buf.get_u16_le());
}
#[test]
#[should_panic]
fn test_get_u16_buffer_underflow() {
let mut buf = VecBuf::new(&[b"\x21"]);
buf.get_u16();
}
#[test]
fn test_bufs_vec() {
let buf = VecBuf::new(&[b"he", b"llo"]);
let b1: &[u8] = &mut [0];
let b2: &[u8] = &mut [0];
let mut dst: [IoSlice; 2] =
[IoSlice::new(b1), IoSlice::new(b2)];
assert_eq!(2, buf.bytes_vectored(&mut dst[..]));
}
}

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//! Asynchronous TLS/SSL streams for Tokio using [Rustls](https://github.com/ctz/rustls).
mod common;
pub mod client;
pub mod server;
use std::io;
use std::pin::Pin;
use std::sync::Arc;
use std::future::Future;
use std::task::{ Context, Poll };
use futures_core::future::FusedFuture;
use tokio::io::{ AsyncRead, AsyncWrite };
use webpki::DNSNameRef;
use rustls::{ ClientConfig, ClientSession, ServerConfig, ServerSession, Session };
use common::{ Stream, TlsState, MidHandshake };
pub use rustls;
pub use webpki;
/// A wrapper around a `rustls::ClientConfig`, providing an async `connect` method.
#[derive(Clone)]
pub struct TlsConnector {
inner: Arc<ClientConfig>,
#[cfg(feature = "early-data")]
early_data: bool,
}
/// A wrapper around a `rustls::ServerConfig`, providing an async `accept` method.
#[derive(Clone)]
pub struct TlsAcceptor {
inner: Arc<ServerConfig>,
}
impl From<Arc<ClientConfig>> for TlsConnector {
fn from(inner: Arc<ClientConfig>) -> TlsConnector {
TlsConnector {
inner,
#[cfg(feature = "early-data")]
early_data: false,
}
}
}
impl From<Arc<ServerConfig>> for TlsAcceptor {
fn from(inner: Arc<ServerConfig>) -> TlsAcceptor {
TlsAcceptor { inner }
}
}
impl TlsConnector {
/// Enable 0-RTT.
///
/// If you want to use 0-RTT,
/// You must also set `ClientConfig.enable_early_data` to `true`.
#[cfg(feature = "early-data")]
pub fn early_data(mut self, flag: bool) -> TlsConnector {
self.early_data = flag;
self
}
#[inline]
pub fn connect<IO>(&self, domain: DNSNameRef, stream: IO) -> Connect<IO>
where
IO: AsyncRead + AsyncWrite + Unpin,
{
self.connect_with(domain, stream, |_| ())
}
pub fn connect_with<IO, F>(&self, domain: DNSNameRef, stream: IO, f: F) -> Connect<IO>
where
IO: AsyncRead + AsyncWrite + Unpin,
F: FnOnce(&mut ClientSession),
{
let mut session = ClientSession::new(&self.inner, domain);
f(&mut session);
Connect(MidHandshake::Handshaking(client::TlsStream {
io: stream,
#[cfg(not(feature = "early-data"))]
state: TlsState::Stream,
#[cfg(feature = "early-data")]
state: if self.early_data && session.early_data().is_some() {
TlsState::EarlyData(0, Vec::new())
} else {
TlsState::Stream
},
session
}))
}
}
impl TlsAcceptor {
#[inline]
pub fn accept<IO>(&self, stream: IO) -> Accept<IO>
where
IO: AsyncRead + AsyncWrite + Unpin,
{
self.accept_with(stream, |_| ())
}
pub fn accept_with<IO, F>(&self, stream: IO, f: F) -> Accept<IO>
where
IO: AsyncRead + AsyncWrite + Unpin,
F: FnOnce(&mut ServerSession),
{
let mut session = ServerSession::new(&self.inner);
f(&mut session);
Accept(MidHandshake::Handshaking(server::TlsStream {
session,
io: stream,
state: TlsState::Stream,
}))
}
}
/// Future returned from `TlsConnector::connect` which will resolve
/// once the connection handshake has finished.
pub struct Connect<IO>(MidHandshake<client::TlsStream<IO>>);
/// Future returned from `TlsAcceptor::accept` which will resolve
/// once the accept handshake has finished.
pub struct Accept<IO>(MidHandshake<server::TlsStream<IO>>);
/// Like [Connect], but returns `IO` on failure.
pub struct FailableConnect<IO>(MidHandshake<client::TlsStream<IO>>);
/// Like [Accept], but returns `IO` on failure.
pub struct FailableAccept<IO>(MidHandshake<server::TlsStream<IO>>);
impl<IO> Connect<IO> {
#[inline]
pub fn into_failable(self) -> FailableConnect<IO> {
FailableConnect(self.0)
}
}
impl<IO> Accept<IO> {
#[inline]
pub fn into_failable(self) -> FailableAccept<IO> {
FailableAccept(self.0)
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> Future for Connect<IO> {
type Output = io::Result<client::TlsStream<IO>>;
#[inline]
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
Pin::new(&mut self.0)
.poll(cx)
.map_err(|(err, _)| err)
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> FusedFuture for Connect<IO> {
#[inline]
fn is_terminated(&self) -> bool {
self.0.is_terminated()
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> Future for Accept<IO> {
type Output = io::Result<server::TlsStream<IO>>;
#[inline]
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
Pin::new(&mut self.0)
.poll(cx)
.map_err(|(err, _)| err)
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> FusedFuture for Accept<IO> {
#[inline]
fn is_terminated(&self) -> bool {
self.0.is_terminated()
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> Future for FailableConnect<IO> {
type Output = Result<client::TlsStream<IO>, (io::Error, IO)>;
#[inline]
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
Pin::new(&mut self.0).poll(cx)
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> FusedFuture for FailableConnect<IO> {
#[inline]
fn is_terminated(&self) -> bool {
self.0.is_terminated()
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> Future for FailableAccept<IO> {
type Output = Result<server::TlsStream<IO>, (io::Error, IO)>;
#[inline]
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
Pin::new(&mut self.0).poll(cx)
}
}
impl<IO: AsyncRead + AsyncWrite + Unpin> FusedFuture for FailableAccept<IO> {
#[inline]
fn is_terminated(&self) -> bool {
self.0.is_terminated()
}
}
/// Unified TLS stream type
///
/// This abstracts over the inner `client::TlsStream` and `server::TlsStream`, so you can use
/// a single type to keep both client- and server-initiated TLS-encrypted connections.
pub enum TlsStream<T> {
Client(client::TlsStream<T>),
Server(server::TlsStream<T>),
}
impl<T> TlsStream<T> {
pub fn get_ref(&self) -> (&T, &dyn Session) {
use TlsStream::*;
match self {
Client(io) => {
let (io, session) = io.get_ref();
(io, &*session)
}
Server(io) => {
let (io, session) = io.get_ref();
(io, &*session)
}
}
}
pub fn get_mut(&mut self) -> (&mut T, &mut dyn Session) {
use TlsStream::*;
match self {
Client(io) => {
let (io, session) = io.get_mut();
(io, &mut *session)
}
Server(io) => {
let (io, session) = io.get_mut();
(io, &mut *session)
}
}
}
}
impl<T> From<client::TlsStream<T>> for TlsStream<T> {
fn from(s: client::TlsStream<T>) -> Self {
Self::Client(s)
}
}
impl<T> From<server::TlsStream<T>> for TlsStream<T> {
fn from(s: server::TlsStream<T>) -> Self {
Self::Server(s)
}
}
impl<T> AsyncRead for TlsStream<T>
where
T: AsyncRead + AsyncWrite + Unpin,
{
#[inline]
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &mut [u8],
) -> Poll<io::Result<usize>> {
match self.get_mut() {
TlsStream::Client(x) => Pin::new(x).poll_read(cx, buf),
TlsStream::Server(x) => Pin::new(x).poll_read(cx, buf),
}
}
}
impl<T> AsyncWrite for TlsStream<T>
where
T: AsyncRead + AsyncWrite + Unpin,
{
#[inline]
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<io::Result<usize>> {
match self.get_mut() {
TlsStream::Client(x) => Pin::new(x).poll_write(cx, buf),
TlsStream::Server(x) => Pin::new(x).poll_write(cx, buf),
}
}
#[inline]
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
match self.get_mut() {
TlsStream::Client(x) => Pin::new(x).poll_flush(cx),
TlsStream::Server(x) => Pin::new(x).poll_flush(cx),
}
}
#[inline]
fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
match self.get_mut() {
TlsStream::Client(x) => Pin::new(x).poll_shutdown(cx),
TlsStream::Server(x) => Pin::new(x).poll_shutdown(cx),
}
}
}

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use super::*;
use rustls::Session;
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: ServerSession,
pub(crate) state: TlsState,
}
impl<IO> TlsStream<IO> {
#[inline]
pub fn get_ref(&self) -> (&IO, &ServerSession) {
(&self.io, &self.session)
}
#[inline]
pub fn get_mut(&mut self) -> (&mut IO, &mut ServerSession) {
(&mut self.io, &mut self.session)
}
#[inline]
pub fn into_inner(self) -> (IO, ServerSession) {
(self.io, self.session)
}
}
impl<IO> IoSession for TlsStream<IO> {
type Io = IO;
type Session = ServerSession;
#[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,
{
#[cfg(feature = "unstable")]
unsafe fn prepare_uninitialized_buffer(&self, _buf: &mut [std::mem::MaybeUninit<u8>]) -> bool {
// TODO
//
// https://doc.rust-lang.org/nightly/std/io/trait.Read.html#method.initializer
false
}
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(0)) => {
this.state.shutdown_read();
Poll::Ready(Ok(0))
}
Poll::Ready(Ok(n)) => Poll::Ready(Ok(n)),
Poll::Ready(Err(ref err)) if err.kind() == io::ErrorKind::ConnectionAborted => {
this.state.shutdown_read();
if this.state.writeable() {
stream.session.send_close_notify();
this.state.shutdown_write();
}
Poll::Ready(Ok(0))
}
Poll::Ready(Err(e)) => Poll::Ready(Err(e)),
Poll::Pending => Poll::Pending
},
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_shutdown(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_shutdown(cx)
}
}

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use std::io;
use std::sync::Arc;
use std::net::ToSocketAddrs;
use tokio::prelude::*;
use tokio::net::TcpStream;
use rustls::ClientConfig;
use tokio_rustls::{ TlsConnector, client::TlsStream };
async fn get(config: Arc<ClientConfig>, domain: &str, port: u16)
-> io::Result<(TlsStream<TcpStream>, String)>
{
let connector = TlsConnector::from(config);
let input = format!("GET / HTTP/1.0\r\nHost: {}\r\n\r\n", domain);
let addr = (domain, port)
.to_socket_addrs()?
.next().unwrap();
let domain = webpki::DNSNameRef::try_from_ascii_str(&domain).unwrap();
let mut buf = Vec::new();
let stream = TcpStream::connect(&addr).await?;
let mut stream = connector.connect(domain, stream).await?;
stream.write_all(input.as_bytes()).await?;
stream.flush().await?;
stream.read_to_end(&mut buf).await?;
Ok((stream, String::from_utf8(buf).unwrap()))
}
#[tokio::test]
async fn test_tls12() -> io::Result<()> {
let mut config = ClientConfig::new();
config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
config.versions = vec![rustls::ProtocolVersion::TLSv1_2];
let config = Arc::new(config);
let domain = "tls-v1-2.badssl.com";
let (_, output) = get(config.clone(), domain, 1012).await?;
assert!(output.contains("<title>tls-v1-2.badssl.com</title>"));
Ok(())
}
#[ignore]
#[should_panic]
#[test]
fn test_tls13() {
unimplemented!("todo https://github.com/chromium/badssl.com/pull/373");
}
#[tokio::test]
async fn test_modern() -> io::Result<()> {
let mut config = ClientConfig::new();
config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
let config = Arc::new(config);
let domain = "mozilla-modern.badssl.com";
let (_, output) = get(config.clone(), domain, 443).await?;
assert!(output.contains("<title>mozilla-modern.badssl.com</title>"));
Ok(())
}

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#![cfg(feature = "early-data")]
use std::io::{ self, BufReader, BufRead, Cursor };
use std::process::{ Command, Child, Stdio };
use std::net::SocketAddr;
use std::sync::Arc;
use std::marker::Unpin;
use std::pin::{ Pin };
use std::task::{ Context, Poll };
use std::time::Duration;
use tokio::prelude::*;
use tokio::net::TcpStream;
use tokio::time::delay_for;
use futures_util::{ future, ready };
use rustls::ClientConfig;
use tokio_rustls::{ TlsConnector, client::TlsStream };
use std::future::Future;
struct Read1<T>(T);
impl<T: AsyncRead + Unpin> Future for Read1<T> {
type Output = io::Result<()>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
let mut buf = [0];
ready!(Pin::new(&mut self.0).poll_read(cx, &mut buf))?;
Poll::Pending
}
}
async fn send(config: Arc<ClientConfig>, addr: SocketAddr, data: &[u8])
-> io::Result<TlsStream<TcpStream>>
{
let connector = TlsConnector::from(config)
.early_data(true);
let stream = TcpStream::connect(&addr).await?;
let domain = webpki::DNSNameRef::try_from_ascii_str("testserver.com").unwrap();
let mut stream = connector.connect(domain, stream).await?;
stream.write_all(data).await?;
stream.flush().await?;
// sleep 1s
//
// see https://www.mail-archive.com/openssl-users@openssl.org/msg84451.html
let sleep1 = delay_for(Duration::from_secs(1));
let mut stream = match future::select(Read1(stream), sleep1).await {
future::Either::Right((_, Read1(stream))) => stream,
future::Either::Left((Err(err), _)) => return Err(err),
future::Either::Left((Ok(_), _)) => unreachable!(),
};
stream.shutdown().await?;
Ok(stream)
}
struct DropKill(Child);
impl Drop for DropKill {
fn drop(&mut self) {
self.0.kill().unwrap();
}
}
#[tokio::test]
async fn test_0rtt() -> io::Result<()> {
let mut handle = Command::new("openssl")
.arg("s_server")
.arg("-early_data")
.arg("-tls1_3")
.args(&["-cert", "./tests/end.cert"])
.args(&["-key", "./tests/end.rsa"])
.args(&["-port", "12354"])
.stdout(Stdio::piped())
.spawn()
.map(DropKill)?;
// wait openssl server
delay_for(Duration::from_secs(1)).await;
let mut config = ClientConfig::new();
let mut chain = BufReader::new(Cursor::new(include_str!("end.chain")));
config.root_store.add_pem_file(&mut chain).unwrap();
config.versions = vec![rustls::ProtocolVersion::TLSv1_3];
config.enable_early_data = true;
let config = Arc::new(config);
let addr = SocketAddr::from(([127, 0, 0, 1], 12354));
let io = send(config.clone(), addr, b"hello").await?;
assert!(!io.get_ref().1.is_early_data_accepted());
let io = send(config, addr, b"world!").await?;
assert!(io.get_ref().1.is_early_data_accepted());
let stdout = handle.0.stdout.as_mut().unwrap();
let mut lines = BufReader::new(stdout).lines();
let has_msg1 = lines.by_ref()
.any(|line| line.unwrap().contains("hello"));
let has_msg2 = lines.by_ref()
.any(|line| line.unwrap().contains("world!"));
assert!(has_msg1 && has_msg2);
Ok(())
}

24
tokio-rustls/tests/end.cert Normal file
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@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----
MIIEADCCAmigAwIBAgICAcgwDQYJKoZIhvcNAQELBQAwLDEqMCgGA1UEAwwhcG9u
eXRvd24gUlNBIGxldmVsIDIgaW50ZXJtZWRpYXRlMB4XDTE2MTIxMDE3NDIzM1oX
DTIyMDYwMjE3NDIzM1owGTEXMBUGA1UEAwwOdGVzdHNlcnZlci5jb20wggEiMA0G
CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC1YDz66+7VD4DL1+/sVHMQ+BbDRgmD
OQlX++mfW8D3QNQm/qDBEbu7T7qqdc9GKDar4WIzBN8SBkzM1EjMGwNnZPV/Tfz0
qUAR1L/7Zzf1GaFZvWXgksyUpfwvmprH3Iy/dpkETwtPthpTPNlui3hZnm/5kkjR
RWg9HmID4O04Ld6SK313v2ZgrPZbkKvbqlqhUnYWjL3blKVGbpXIsuZzEU9Ph+gH
tPcEhZpFsM6eLe+2TVscIrycMEOTXqAAmO6zZ9sQWtfllu3CElm904H6+jA/9Leg
al72pMmkYr8wWniqDDuijXuCPlVx5EDFFyxBmW18UeDEQaKV3kNfelaTAgMBAAGj
gb4wgbswDAYDVR0TAQH/BAIwADALBgNVHQ8EBAMCBsAwHQYDVR0OBBYEFIYhJkVy
AAKT6cY/ruH1Eu+NNxteMEIGA1UdIwQ7MDmAFNwuPy4Do//Sm5CZDrocHWTrNr96
oR6kHDAaMRgwFgYDVQQDDA9wb255dG93biBSU0EgQ0GCAXswOwYDVR0RBDQwMoIO
dGVzdHNlcnZlci5jb22CFXNlY29uZC50ZXN0c2VydmVyLmNvbYIJbG9jYWxob3N0
MA0GCSqGSIb3DQEBCwUAA4IBgQCWV76jfQDZKtfmj45fTwZzoe/PxjWPRbAvSEnt
LRHrPhqQfpMLqpun8uu/w86mHiR/AmiAySMu3zivW6wfGzlRWLi/zCyO6r9LGsgH
bNk5CF642cdZFvn1SiSm1oGXQrolIpcyXu88nUpt74RnY4ETCC1dRQKqxsYufe5T
DOmTm3ChinNW4QRG3yvW6DVuyxVAgZvofyKJOsM3GO6oogIM41aBqZ3UTwmIwp6D
oISdiATslFOzYzjnyXNR8DG8OOkv1ehWuyb8x+hQCZAuogQOWYtCSd6k3kKgd0EM
4CWbt1XDV9ZJwBf2uxZeKuCu/KIy9auNtijAwPsUv9qxuzko018zhl3lWm5p2Sqw
O7fFshU3A6df8hMw7ST6/tgFY7geT88U4iJhfWMwr/CZSRSVMXhTyJgbLIXxKYZj
Ym5v4NAIQP6hI4HixzQaYgrhW6YX6myk+emMjQLRJHT8uHvmT7fuxMJVWWgsCkr1
C75pRQEagykN/Uzr5e6Tm8sVu88=
-----END CERTIFICATE-----

89
tokio-rustls/tests/end.chain Normal file
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@ -0,0 +1,89 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

27
tokio-rustls/tests/end.rsa Normal file
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@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----
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-----END RSA PRIVATE KEY-----

128
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@ -0,0 +1,128 @@
use std::{ io, thread };
use std::io::{ BufReader, Cursor };
use std::sync::Arc;
use std::sync::mpsc::channel;
use std::net::SocketAddr;
use futures_util::future::TryFutureExt;
use lazy_static::lazy_static;
use tokio::prelude::*;
use tokio::runtime;
use tokio::io::{ copy, split };
use tokio::net::{ TcpListener, TcpStream };
use rustls::{ ServerConfig, ClientConfig };
use rustls::internal::pemfile::{ certs, rsa_private_keys };
use tokio_rustls::{ TlsConnector, TlsAcceptor };
const CERT: &str = include_str!("end.cert");
const CHAIN: &str = include_str!("end.chain");
const RSA: &str = include_str!("end.rsa");
lazy_static!{
static ref TEST_SERVER: (SocketAddr, &'static str, &'static str) = {
let cert = certs(&mut BufReader::new(Cursor::new(CERT))).unwrap();
let mut keys = rsa_private_keys(&mut BufReader::new(Cursor::new(RSA))).unwrap();
let mut config = ServerConfig::new(rustls::NoClientAuth::new());
config.set_single_cert(cert, keys.pop().unwrap())
.expect("invalid key or certificate");
let acceptor = TlsAcceptor::from(Arc::new(config));
let (send, recv) = channel();
thread::spawn(move || {
let mut runtime = runtime::Builder::new()
.basic_scheduler()
.enable_io()
.build()
.unwrap();
let handle = runtime.handle().clone();
let done = async move {
let addr = SocketAddr::from(([127, 0, 0, 1], 0));
let mut listener = TcpListener::bind(&addr).await?;
send.send(listener.local_addr()?).unwrap();
loop {
let (stream, _) = listener.accept().await?;
let acceptor = acceptor.clone();
let fut = async move {
let stream = acceptor.accept(stream).await?;
let (mut reader, mut writer) = split(stream);
copy(&mut reader, &mut writer).await?;
Ok(()) as io::Result<()>
}.unwrap_or_else(|err| eprintln!("server: {:?}", err));
handle.spawn(fut);
}
}.unwrap_or_else(|err: io::Error| eprintln!("server: {:?}", err));
runtime.block_on(done);
});
let addr = recv.recv().unwrap();
(addr, "testserver.com", CHAIN)
};
}
fn start_server() -> &'static (SocketAddr, &'static str, &'static str) {
&*TEST_SERVER
}
async fn start_client(addr: SocketAddr, domain: &str, config: Arc<ClientConfig>) -> io::Result<()> {
const FILE: &'static [u8] = include_bytes!("../README.md");
let domain = webpki::DNSNameRef::try_from_ascii_str(domain).unwrap();
let config = TlsConnector::from(config);
let mut buf = vec![0; FILE.len()];
let stream = TcpStream::connect(&addr).await?;
let mut stream = config.connect(domain, stream).await?;
stream.write_all(FILE).await?;
stream.flush().await?;
stream.read_exact(&mut buf).await?;
assert_eq!(buf, FILE);
Ok(())
}
#[tokio::test]
async fn pass() -> io::Result<()> {
let (addr, domain, chain) = start_server();
// TODO: not sure how to resolve this right now but since
// TcpStream::bind now returns a future it creates a race
// condition until its ready sometimes.
use std::time::*;
tokio::time::delay_for(Duration::from_secs(1)).await;
let mut config = ClientConfig::new();
let mut chain = BufReader::new(Cursor::new(chain));
config.root_store.add_pem_file(&mut chain).unwrap();
let config = Arc::new(config);
start_client(addr.clone(), domain, config.clone()).await?;
Ok(())
}
#[tokio::test]
async fn fail() -> io::Result<()> {
let (addr, domain, chain) = start_server();
let mut config = ClientConfig::new();
let mut chain = BufReader::new(Cursor::new(chain));
config.root_store.add_pem_file(&mut chain).unwrap();
let config = Arc::new(config);
assert_ne!(domain, &"google.com");
let ret = start_client(addr.clone(), "google.com", config).await;
assert!(ret.is_err());
Ok(())
}