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use crate::state::State;
use crate::command::Command;
use log::*;
use futures::channel::oneshot;
use futures::{join, SinkExt, StreamExt};
use futures_util::stream::{SplitSink, SplitStream};
use mumble_protocol::control::{msgs, ClientControlCodec, ControlCodec, ControlPacket};
use mumble_protocol::crypt::ClientCryptState;
use mumble_protocol::{Clientbound, Serverbound};
use std::convert::{Into, TryInto};
use std::net::{SocketAddr};
use std::sync::{Arc, Mutex};
use tokio::net::TcpStream;
use tokio::sync::mpsc;
use tokio::time::{self, Duration};
use tokio_tls::{TlsConnector, TlsStream};
use tokio_util::codec::{Decoder, Framed};
type TcpSender = SplitSink<
Framed<TlsStream<TcpStream>, ControlCodec<Serverbound, Clientbound>>,
ControlPacket<Serverbound>,
>;
type TcpReceiver =
SplitStream<Framed<TlsStream<TcpStream>, ControlCodec<Serverbound, Clientbound>>>;
pub async fn handle(
state: Arc<Mutex<State>>,
server_addr: SocketAddr,
server_host: String,
accept_invalid_cert: bool,
crypt_state_sender: oneshot::Sender<ClientCryptState>,
packet_receiver: mpsc::UnboundedReceiver<ControlPacket<Serverbound>>,
) {
let (sink, stream) = connect(server_addr, server_host, accept_invalid_cert).await;
let sink = Arc::new(Mutex::new(sink));
// Handshake (omitting `Version` message for brevity)
authenticate(Arc::clone(&sink), state.lock().unwrap().username().to_string()).await;
info!("Logging in...");
join!(
send_pings(Arc::clone(&sink), 10),
listen(state, stream, crypt_state_sender),
send_packets(sink, packet_receiver),
);
}
async fn connect(
server_addr: SocketAddr,
server_host: String,
accept_invalid_cert: bool,
) -> (TcpSender, TcpReceiver) {
let stream = TcpStream::connect(&server_addr)
.await
.expect("failed to connect to server:");
debug!("TCP connected");
let mut builder = native_tls::TlsConnector::builder();
builder.danger_accept_invalid_certs(accept_invalid_cert);
let connector: TlsConnector = builder
.build()
.expect("failed to create TLS connector")
.into();
let tls_stream = connector
.connect(&server_host, stream)
.await
.expect("failed to connect TLS: {}");
debug!("TLS connected");
// Wrap the TLS stream with Mumble's client-side control-channel codec
ClientControlCodec::new().framed(tls_stream).split()
}
//TODO &mut sink?
async fn authenticate(sink: Arc<Mutex<TcpSender>>, username: String) {
let mut msg = msgs::Authenticate::new();
msg.set_username(username);
msg.set_opus(true);
sink.lock().unwrap().send(msg.into()).await.unwrap();
}
//TODO move somewhere else (main?) and send through packet_sender
async fn send_pings(sink: Arc<Mutex<TcpSender>>, delay_seconds: u64) {
let mut interval = time::interval(Duration::from_secs(delay_seconds));
loop {
interval.tick().await;
trace!("Sending ping");
let msg = msgs::Ping::new();
sink.lock().unwrap().send(msg.into()).await.unwrap();
}
}
async fn send_packets(sink: Arc<Mutex<TcpSender>>,
mut packet_receiver: mpsc::UnboundedReceiver<ControlPacket<Serverbound>>) {
while let Some(packet) = packet_receiver.recv().await {
sink.lock().unwrap().send(packet).await.unwrap();
}
}
async fn listen(
state: Arc<Mutex<State>>,
mut stream: TcpReceiver,
crypt_state_sender: oneshot::Sender<ClientCryptState>,
) {
let mut crypt_state = None;
let mut crypt_state_sender = Some(crypt_state_sender);
while let Some(packet) = stream.next().await {
//TODO handle types separately
match packet.unwrap() {
ControlPacket::TextMessage(msg) => {
info!(
"Got message from user with session ID {}: {}",
msg.get_actor(),
msg.get_message()
);
}
ControlPacket::CryptSetup(msg) => {
debug!("Crypt setup");
// Wait until we're fully connected before initiating UDP voice
crypt_state = Some(ClientCryptState::new_from(
msg.get_key()
.try_into()
.expect("Server sent private key with incorrect size"),
msg.get_client_nonce()
.try_into()
.expect("Server sent client_nonce with incorrect size"),
msg.get_server_nonce()
.try_into()
.expect("Server sent server_nonce with incorrect size"),
));
}
ControlPacket::ServerSync(msg) => {
info!("Logged in");
if let Some(sender) = crypt_state_sender.take() {
let _ = sender.send(
crypt_state
.take()
.expect("Server didn't send us any CryptSetup packet!"),
);
}
let mut state = state.lock().unwrap();
let server = state.server_mut();
server.parse_server_sync(msg);
match &server.welcome_text {
Some(s) => info!("Welcome: {}", s),
None => info!("No welcome received"),
}
for (_, channel) in server.channels() {
info!("Found channel {}", channel.name());
}
state.initialized();
}
ControlPacket::Reject(msg) => {
warn!("Login rejected: {:?}", msg);
}
ControlPacket::UserState(msg) => {
let mut state = state.lock().unwrap();
let session = msg.get_session();
state.audio_mut().add_client(msg.get_session()); //TODO
state.parse_initial_user_state(msg); //TODO only if actually initiating state
let server = state.server_mut();
let user = server.users().get(&session).unwrap();
info!("User {} connected to {}",
user.name(),
user.channel());
}
ControlPacket::UserRemove(msg) => {
info!("User {} left", msg.get_session());
state.lock().unwrap().audio_mut().remove_client(msg.get_session());
}
ControlPacket::ChannelState(msg) => {
debug!("Channel state received");
state.lock().unwrap().server_mut().parse_channel_state(msg);
}
ControlPacket::ChannelRemove(msg) => {
state.lock().unwrap().server_mut().parse_channel_remove(msg);
}
_ => {}
}
}
}
|
