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use crate::prelude::*;
use gotham::state::FromState as _;
#[derive(
serde::Deserialize,
gotham_derive::StateData,
gotham_derive::StaticResponseExtender,
)]
pub struct QueryParams {
username: String,
}
#[derive(serde::Serialize)]
struct Response {
username: String,
}
pub fn run(
mut state: gotham::state::State,
) -> (gotham::state::State, hyper::Response<hyper::Body>) {
let username = {
let query_params = QueryParams::borrow_from(&state);
query_params.username.clone()
};
let config = crate::web::Config::borrow_from(&state);
let (_, address) = config.server_address;
let connector: crate::client::Connector<_> = Box::new(move || {
Box::new(
tokio::net::tcp::TcpStream::connect(&address)
.context(crate::error::Connect { address }),
)
});
let auth = crate::protocol::Auth::plain(&username);
let client = crate::client::Client::raw("teleterm-web", connector, &auth);
let (w_login, r_login) = tokio::sync::oneshot::channel();
tokio::spawn(
Client::new(client, auth, w_login)
// XXX if this happens, we might not have sent anything on the
// channel, and so the wait might block forever
.map_err(|e| log::error!("error logging in: {}", e)),
);
let session = gotham::middleware::session::SessionData::<
crate::web::SessionData,
>::borrow_mut_from(&mut state);
match r_login.wait().unwrap() {
Ok(login) => {
session.login = Some(login);
}
Err(e) => {
session.login = None;
log::error!("error logging in: {}", e);
return (
state,
hyper::Response::builder()
.status(hyper::StatusCode::INTERNAL_SERVER_ERROR)
.body(hyper::Body::empty())
.unwrap(),
);
}
}
(
state,
hyper::Response::new(hyper::Body::from(
serde_json::to_string(&Response { username }).unwrap(),
)),
)
}
pub(crate) struct Client<
S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static,
> {
client: crate::client::Client<S>,
auth: crate::protocol::Auth,
w_login: Option<tokio::sync::oneshot::Sender<Result<super::LoginState>>>,
}
impl<S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static>
Client<S>
{
pub(crate) fn new(
client: crate::client::Client<S>,
auth: crate::protocol::Auth,
w_login: tokio::sync::oneshot::Sender<Result<super::LoginState>>,
) -> Self {
Self {
client,
auth,
w_login: Some(w_login),
}
}
}
impl<S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static>
Client<S>
{
const POLL_FNS:
&'static [&'static dyn for<'a> Fn(
&'a mut Self,
)
-> component_future::Poll<
(),
Error,
>] = &[&Self::poll_client];
fn poll_client(&mut self) -> component_future::Poll<(), Error> {
let res =
match component_future::try_ready!(self.client.poll()).unwrap() {
crate::client::Event::ServerMessage(msg) => match msg {
crate::protocol::Message::Disconnected => {
Err(Error::ServerDisconnected)
}
crate::protocol::Message::Error { msg } => {
Err(Error::Server { message: msg })
}
crate::protocol::Message::LoggedIn { username } => {
Ok(super::LoginState {
auth: self.auth.clone(),
username,
})
}
_ => {
return Ok(component_future::Async::DidWork);
}
},
_ => unreachable!(),
};
self.w_login.take().unwrap().send(res).unwrap();
Ok(component_future::Async::Ready(()))
}
}
impl<S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static>
futures::Future for Client<S>
{
type Item = ();
type Error = Error;
fn poll(&mut self) -> futures::Poll<Self::Item, Self::Error> {
component_future::poll_future(self, Self::POLL_FNS)
}
}
|
