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::{Jid, Element};
  8use xmpp_parsers::message::{Body, Message, MessageType};
  9use xmpp_parsers::presence::{Presence, Show as PresenceShow, Type as PresenceType};
 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(
 33            sink.sink_map_err(|_| panic!("Pipe"))
 34        )
 35            .map(|(rx, mut sink)| {
 36                drop(rx);
 37                let _ = sink.close();
 38            })
 39            .map_err(|e| {
 40                panic!("Send error: {:?}", e);
 41            })
 42    );
 43
 44    // Main loop, processes events
 45    let mut wait_for_stream_end = false;
 46    let done = stream.for_each(move |event| {
 47        if wait_for_stream_end {
 48            /* Do nothing */
 49        } else if event.is_online() {
 50            println!("Online!");
 51
 52            let presence = make_presence();
 53            tx.start_send(Packet::Stanza(presence)).unwrap();
 54        } else if let Some(message) = event
 55            .into_stanza()
 56            .and_then(|stanza| Message::try_from(stanza).ok())
 57        {
 58            match (message.from, message.bodies.get("")) {
 59                (Some(ref from), Some(ref body)) if body.0 == "die" => {
 60                    println!("Secret die command triggered by {}", from.clone());
 61                    wait_for_stream_end = true;
 62                    tx.start_send(Packet::StreamEnd).unwrap();
 63                }
 64                (Some(ref from), Some(ref body)) => {
 65                    if message.type_ != MessageType::Error {
 66                        // This is a message we'll echo
 67                        let reply = make_reply(from.clone(), &body.0);
 68                        tx.start_send(Packet::Stanza(reply)).unwrap();
 69                    }
 70                }
 71                _ => {}
 72            }
 73        }
 74
 75        future::ok(())
 76    });
 77
 78    // Start polling `done`
 79    match rt.block_on(done) {
 80        Ok(_) => (),
 81        Err(e) => {
 82            println!("Fatal: {}", e);
 83            ()
 84        }
 85    }
 86}
 87
 88// Construct a <presence/>
 89fn make_presence() -> Element {
 90    let mut presence = Presence::new(PresenceType::None);
 91    presence.show = Some(PresenceShow::Chat);
 92    presence
 93        .statuses
 94        .insert(String::from("en"), String::from("Echoing messages."));
 95    presence.into()
 96}
 97
 98// Construct a chat <message/>
 99fn make_reply(to: Jid, body: &str) -> Element {
100    let mut message = Message::new(Some(to));
101    message.bodies.insert(String::new(), Body(body.to_owned()));
102    message.into()
103}