1use futures::{future, Future, Sink, Stream};
  2use std::convert::TryFrom;
  3use std::env::args;
  4use std::process::exit;
  5use tokio::runtime::current_thread::Runtime;
  6use tokio_xmpp::{Client, Packet};
  7use xmpp_parsers::message::{Body, Message, MessageType};
  8use xmpp_parsers::presence::{Presence, Show as PresenceShow, Type as PresenceType};
  9use xmpp_parsers::{Element, Jid};
 10
 11fn main() {
 12    let args: Vec<String> = args().collect();
 13    if args.len() != 3 {
 14        println!("Usage: {} <jid> <password>", args[0]);
 15        exit(1);
 16    }
 17    let jid = &args[1];
 18    let password = &args[2];
 19
 20    // tokio_core context
 21    let mut rt = Runtime::new().unwrap();
 22    // Client instance
 23    let client = Client::new(jid, password).unwrap();
 24
 25    // Make the two interfaces for sending and receiving independent
 26    // of each other so we can move one into a closure.
 27    let (sink, stream) = client.split();
 28
 29    // Create outgoing pipe
 30    let (mut tx, rx) = futures::unsync::mpsc::unbounded();
 31    rt.spawn(
 32        rx.forward(sink.sink_map_err(|_| panic!("Pipe")))
 33            .map(|(rx, mut sink)| {
 34                drop(rx);
 35                let _ = sink.close();
 36            })
 37            .map_err(|e| {
 38                panic!("Send error: {:?}", e);
 39            }),
 40    );
 41
 42    // Main loop, processes events
 43    let mut wait_for_stream_end = false;
 44    let done = stream.for_each(move |event| {
 45        if wait_for_stream_end {
 46            /* Do nothing */
 47        } else if event.is_online() {
 48            let jid = event
 49                .get_jid()
 50                .map(|jid| format!("{}", jid))
 51                .unwrap_or("unknown".to_owned());
 52            println!("Online at {}", jid);
 53
 54            let presence = make_presence();
 55            tx.start_send(Packet::Stanza(presence)).unwrap();
 56        } else if let Some(message) = event
 57            .into_stanza()
 58            .and_then(|stanza| Message::try_from(stanza).ok())
 59        {
 60            match (message.from, message.bodies.get("")) {
 61                (Some(ref from), Some(ref body)) if body.0 == "die" => {
 62                    println!("Secret die command triggered by {}", from);
 63                    wait_for_stream_end = true;
 64                    tx.start_send(Packet::StreamEnd).unwrap();
 65                }
 66                (Some(ref from), Some(ref body)) => {
 67                    if message.type_ != MessageType::Error {
 68                        // This is a message we'll echo
 69                        let reply = make_reply(from.clone(), &body.0);
 70                        tx.start_send(Packet::Stanza(reply)).unwrap();
 71                    }
 72                }
 73                _ => {}
 74            }
 75        }
 76
 77        future::ok(())
 78    });
 79
 80    // Start polling `done`
 81    match rt.block_on(done) {
 82        Ok(_) => (),
 83        Err(e) => {
 84            println!("Fatal: {}", e);
 85            ()
 86        }
 87    }
 88}
 89
 90// Construct a <presence/>
 91fn make_presence() -> Element {
 92    let mut presence = Presence::new(PresenceType::None);
 93    presence.show = Some(PresenceShow::Chat);
 94    presence
 95        .statuses
 96        .insert(String::from("en"), String::from("Echoing messages."));
 97    presence.into()
 98}
 99
100// Construct a chat <message/>
101fn make_reply(to: Jid, body: &str) -> Element {
102    let mut message = Message::new(Some(to));
103    message.bodies.insert(String::new(), Body(body.to_owned()));
104    message.into()
105}