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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162

use async_native_tls::{TlsConnector, TlsStream};
use std::{
    fmt::Debug,
    future::Future,
    io::{Error, ErrorKind, Result},
    marker::PhantomData,
    net::SocketAddr,
    pin::Pin,
    sync::Arc,
    task::{Context, Poll},
};
use trillium_tls_common::{async_trait, AsyncRead, AsyncWrite, Connector, Url};
use NativeTlsTransportInner::{Tcp, Tls};

/**
Transport for the native tls connector

This may represent either an encrypted tls connection or a plaintext
connection, depending on the request scheme.
*/

#[derive(Debug)]
pub struct NativeTlsTransport<T>(NativeTlsTransportInner<T>);

#[derive(Debug)]
enum NativeTlsTransportInner<T> {
    Tcp(T),
    Tls(TlsStream<T>),
}

impl<T: AsyncRead + AsyncWrite + Unpin> AsyncRead for NativeTlsTransport<T> {
    fn poll_read(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &mut [u8],
    ) -> Poll<Result<usize>> {
        match &mut self.0 {
            Tcp(t) => Pin::new(t).poll_read(cx, buf),
            Tls(t) => Pin::new(t).poll_read(cx, buf),
        }
    }
}

impl<T: AsyncRead + AsyncWrite + Unpin> AsyncWrite for NativeTlsTransport<T> {
    fn poll_write(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &[u8],
    ) -> Poll<Result<usize>> {
        match &mut self.0 {
            Tcp(t) => Pin::new(t).poll_write(cx, buf),
            Tls(t) => Pin::new(t).poll_write(cx, buf),
        }
    }

    fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>> {
        match &mut self.0 {
            Tcp(t) => Pin::new(t).poll_flush(cx),
            Tls(t) => Pin::new(t).poll_flush(cx),
        }
    }

    fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>> {
        match &mut self.0 {
            Tcp(t) => Pin::new(t).poll_close(cx),
            Tls(t) => Pin::new(t).poll_close(cx),
        }
    }
}
/**
Configuration for the native tls client connector
*/
#[derive(Clone)]
pub struct NativeTlsConfig<Config> {
    /// configuration for the inner Connector (usually tcp)
    pub tcp_config: Config,

    /**
    native tls configuration

    Although async_native_tls calls this
    a TlsConnector, it's actually a builder ¯\_(ツ)_/¯
    */
    pub tls_connector: Arc<TlsConnector>,
}

impl<Config: Debug> Debug for NativeTlsConfig<Config> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.debug_struct("NativeTlsConfig")
            .field("tcp_config", &self.tcp_config)
            .field("tls_connector", &"..")
            .finish()
    }
}

impl<Config: Default> Default for NativeTlsConfig<Config> {
    fn default() -> Self {
        Self {
            tcp_config: Config::default(),
            tls_connector: Arc::new(TlsConnector::default()),
        }
    }
}

impl<Config> AsRef<Config> for NativeTlsConfig<Config> {
    fn as_ref(&self) -> &Config {
        &self.tcp_config
    }
}

/**
trillium client connector for native tls
*/
#[derive(Clone, Copy, Debug)]
pub struct NativeTlsConnector<T>(PhantomData<T>);

#[async_trait]
impl<T: Connector> Connector for NativeTlsConnector<T> {
    type Config = NativeTlsConfig<T::Config>;
    type Transport = NativeTlsTransport<T::Transport>;

    fn peer_addr(transport: &Self::Transport) -> Result<SocketAddr> {
        match &transport.0 {
            Tcp(transport) => T::peer_addr(transport),
            Tls(tls_stream) => T::peer_addr(tls_stream.get_ref()),
        }
    }

    async fn connect(url: &Url, config: &Self::Config) -> Result<Self::Transport> {
        match url.scheme() {
            "https" => {
                let mut http = url.clone();
                http.set_scheme("http").ok();
                http.set_port(url.port_or_known_default()).ok();
                let inner_stream = T::connect(&http, config.as_ref()).await?;
                let tls_stream = config
                    .tls_connector
                    .connect(url, inner_stream)
                    .await
                    .map_err(|e| Error::new(ErrorKind::Other, e.to_string()))?;
                Ok(NativeTlsTransport(Tls(tls_stream)))
            }

            "http" => Ok(NativeTlsTransport(Tcp(
                T::connect(&url, config.as_ref()).await?
            ))),

            unknown => Err(Error::new(
                ErrorKind::InvalidInput,
                format!("unknown scheme {}", unknown),
            )),
        }
    }

    fn spawn<Fut>(future: Fut)
    where
        Fut: Future + Send + 'static,
        <Fut as Future>::Output: Send,
    {
        T::spawn(future);
    }
}