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/*
* SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
*
* SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
*/
use common::listener::{SessionData, SessionManager, SessionResult, SessionStream};
use imap_proto::receiver::{self, Receiver};
use jmap::JMAP;
use tokio_rustls::server::TlsStream;
use crate::SERVER_GREETING;
use super::{ManageSieveSessionManager, Session, State};
impl SessionManager for ManageSieveSessionManager {
#[allow(clippy::manual_async_fn)]
fn handle<T: SessionStream>(
self,
session: SessionData<T>,
) -> impl std::future::Future<Output = ()> + Send {
async move {
// Create session
let jmap = JMAP::from(self.imap.jmap_instance);
let mut session = Session {
receiver: Receiver::with_max_request_size(jmap.core.imap.max_request_size)
.with_start_state(receiver::State::Command { is_uid: false }),
jmap,
imap: self.imap.imap_inner,
instance: session.instance,
state: State::NotAuthenticated { auth_failures: 0 },
session_id: session.session_id,
stream: session.stream,
in_flight: session.in_flight,
remote_addr: session.remote_ip,
};
if session
.write(&session.handle_capability(SERVER_GREETING).await.unwrap())
.await
.is_ok()
&& session.handle_conn().await
&& session.instance.acceptor.is_tls()
{
if let Ok(mut session) = session.into_tls().await {
let _ = session
.write(&session.handle_capability(SERVER_GREETING).await.unwrap())
.await;
session.handle_conn().await;
}
}
}
}
#[allow(clippy::manual_async_fn)]
fn shutdown(&self) -> impl std::future::Future<Output = ()> + Send {
async {}
}
}
impl<T: SessionStream> Session<T> {
pub async fn handle_conn(&mut self) -> bool {
let mut buf = vec![0; 8192];
let mut shutdown_rx = self.instance.shutdown_rx.clone();
loop {
tokio::select! {
result = tokio::time::timeout(
if !matches!(self.state, State::NotAuthenticated {..}) {
self.jmap.core.imap.timeout_auth
} else {
self.jmap.core.imap.timeout_unauth
},
self.read(&mut buf)) => {
match result {
Ok(Ok(bytes_read)) => {
if bytes_read > 0 {
match self.ingest(&buf[..bytes_read]).await {
SessionResult::Continue => (),
SessionResult::UpgradeTls => {
return true;
}
SessionResult::Close => {
break;
}
}
} else {
trc::event!(
Network(trc::NetworkEvent::Closed),
SpanId = self.session_id,
CausedBy = trc::location!()
);
break;
}
}
Ok(Err(err)) => {
trc::event!(
Network(trc::NetworkEvent::ReadError),
SpanId = self.session_id,
Reason = err,
CausedBy = trc::location!()
);
break;
}
Err(_) => {
trc::event!(
Network(trc::NetworkEvent::Timeout),
SpanId = self.session_id,
CausedBy = trc::location!()
);
self
.write(b"BYE \"Connection timed out.\"\r\n")
.await
.ok();
break;
}
}
},
_ = shutdown_rx.changed() => {
trc::event!(
Network(trc::NetworkEvent::Closed),
SpanId = self.session_id,
Reason = "Server shutting down",
CausedBy = trc::location!()
);
self.write(b"BYE \"Server shutting down.\"\r\n").await.ok();
break;
}
};
}
false
}
pub async fn into_tls(self) -> Result<Session<TlsStream<T>>, ()> {
Ok(Session {
stream: self
.instance
.tls_accept(self.stream, self.session_id)
.await?,
state: self.state,
instance: self.instance,
in_flight: self.in_flight,
session_id: self.session_id,
jmap: self.jmap,
imap: self.imap,
receiver: self.receiver,
remote_addr: self.remote_addr,
})
}
}
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