opentls 0.2.1

TLS connections with OpenSSL.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129

use std::fmt;
use std::marker::Unpin;

use crate::{
    async_io::{
        handshake::handshake,
        runtime::{AsyncRead, AsyncReadExt, AsyncWrite},
        TlsStream,
    },
    sync_io, Identity,
};

/// A wrapper around a `native_tls::TlsAcceptor`, providing an async `accept`
/// method.
///
/// # Example
///
/// ```no_run
/// # #[cfg(feature = "io-async-std")]
/// # fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>> { async_std::task::block_on(async {
/// #
/// use async_std::prelude::*;
/// use async_std::net::TcpListener;
/// use async_std::fs::File;
/// use opentls::async_io::TlsAcceptor;
///
/// let key = File::open("tests/identity.pfx").await?;
/// let acceptor = TlsAcceptor::new(key, "hello").await?;
/// let listener = TcpListener::bind("127.0.0.1:8443").await?;
/// let mut incoming = listener.incoming();
///
/// while let Some(stream) = incoming.next().await {
///     let acceptor = acceptor.clone();
///     let stream = stream?;
///     async_std::task::spawn(async move {
///         let stream = acceptor.accept(stream).await.unwrap();
///         // handle stream here
///     });
/// }
/// #
/// # Ok(()) }) }
/// # #[cfg(feature = "io-tokio")]
/// # fn main() {}
/// ```
#[derive(Clone)]
pub struct TlsAcceptor(sync_io::TlsAcceptor);

impl TlsAcceptor {
    /// Create a new TlsAcceptor based on an identity file and matching password.
    pub async fn new<R, S>(mut file: R, password: S) -> crate::Result<Self>
    where
        R: AsyncRead + Unpin,
        S: AsRef<str>,
    {
        let mut identity = vec![];
        file.read_to_end(&mut identity).await?;

        let identity = Identity::from_pkcs12(&identity, password.as_ref())?;
        Ok(TlsAcceptor(sync_io::TlsAcceptor::new(identity)?))
    }

    /// Accepts a new client connection with the provided stream.
    ///
    /// This function will internally call `TlsAcceptor::accept` to connect
    /// the stream and returns a future representing the resolution of the
    /// connection operation. The returned future will resolve to either
    /// `TlsStream<S>` or `Error` depending if it's successful or not.
    ///
    /// This is typically used after a new socket has been accepted from a
    /// `TcpListener`. That socket is then passed to this function to perform
    /// the server half of accepting a client connection.
    pub async fn accept<S>(&self, stream: S) -> crate::Result<TlsStream<S>>
    where
        S: AsyncRead + AsyncWrite + Unpin,
    {
        let stream = handshake(move |s| self.0.accept(s), stream).await?;
        Ok(stream)
    }
}

impl fmt::Debug for TlsAcceptor {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("TlsAcceptor").finish()
    }
}

impl From<sync_io::TlsAcceptor> for TlsAcceptor {
    fn from(inner: sync_io::TlsAcceptor) -> TlsAcceptor {
        TlsAcceptor(inner)
    }
}

#[cfg(all(test, feature = "io-async-std"))]
mod tests {
    use super::*;
    use crate::async_io::{runtime::AsyncWriteExt, TlsConnector};
    use async_std::{
        fs::File,
        net::{TcpListener, TcpStream},
        stream::StreamExt,
    };

    #[async_std::test]
    async fn test_acceptor() {
        let key = File::open("tests/identity.pfx").await.unwrap();
        let acceptor = TlsAcceptor::new(key, "hello").await.unwrap();
        let listener = TcpListener::bind("127.0.0.1:8443").await.unwrap();
        async_std::task::spawn(async move {
            let mut incoming = listener.incoming();

            while let Some(stream) = incoming.next().await {
                let acceptor = acceptor.clone();
                let stream = stream.unwrap();
                async_std::task::spawn(async move {
                    let mut stream = acceptor.accept(stream).await.unwrap();
                    stream.write_all(b"hello").await.unwrap();
                });
            }
        });

        let stream = TcpStream::connect("127.0.01:8443").await.unwrap();
        let connector = TlsConnector::new().danger_accept_invalid_certs(true);

        let mut stream = connector.connect("127.0.0.1", stream).await.unwrap();
        let mut res = Vec::new();
        stream.read_to_end(&mut res).await.unwrap();
        assert_eq!(res, b"hello");
    }
}