1extern crate futures;
 2extern crate tokio_core;
 3extern crate tokio_xmpp;
 4extern crate jid;
 5extern crate minidom;
 6extern crate xmpp_parsers;
 7extern crate try_from;
 8
 9use std::env::args;
10use std::process::exit;
11use try_from::TryFrom;
12use tokio_core::reactor::Core;
13use futures::{Future, Stream, Sink, future};
14use tokio_xmpp::Client;
15use minidom::Element;
16use xmpp_parsers::presence::{Presence, Type as PresenceType, Show as PresenceShow};
17use xmpp_parsers::message::{Message, MessageType, Body};
18use jid::Jid;
19
20fn main() {
21    let args: Vec<String> = args().collect();
22    if args.len() != 3 {
23        println!("Usage: {} <jid> <password>", args[0]);
24        exit(1);
25    }
26    let jid = &args[1];
27    let password = &args[2];
28
29    // tokio_core context
30    let mut core = Core::new().unwrap();
31    // Client instance
32    let client = Client::new(jid, password, core.handle()).unwrap();
33
34    // Make the two interfaces for sending and receiving independent
35    // of each other so we can move one into a closure.
36    let (sink, stream) = client.split();
37    // Wrap sink in Option so that we can take() it for the send(self)
38    // to consume and return it back when ready.
39    let mut sink = Some(sink);
40    let mut send = move |stanza| {
41        sink = Some(
42            sink.take().
43                expect("sink")
44                .send(stanza)
45                .wait()
46                .expect("sink.send")
47        );
48    };
49    // Main loop, processes events
50    let done = stream.for_each(|event| {
51        if event.is_online() {
52            println!("Online!");
53
54            let presence = make_presence();
55            send(presence);
56        } else if let Some(message) = event.into_stanza()
57            .and_then(|stanza| Message::try_from(stanza).ok())
58        {
59            // This is a message we'll echo
60            match (message.from, message.bodies.get("")) {
61                (Some(from), Some(body)) =>
62                    if message.type_ != MessageType::Error {
63                        let reply = make_reply(from, &body.0);
64                        send(reply);
65                    },
66                _ => (),
67            }
68        }
69
70        Box::new(future::ok(()))
71    });
72
73    // Start polling `done`
74    match core.run(done) {
75        Ok(_) => (),
76        Err(e) => {
77            println!("Fatal: {}", e);
78            ()
79        }
80    }
81}
82
83// Construct a <presence/>
84fn make_presence() -> Element {
85    let mut presence = Presence::new(PresenceType::None);
86    presence.show = PresenceShow::Chat;
87    presence.statuses.insert(String::from("en"), String::from("Echoing messages."));
88    presence.into()
89}
90
91// Construct a chat <message/>
92fn make_reply(to: Jid, body: &str) -> Element {
93    let mut message = Message::new(Some(to));
94    message.bodies.insert(String::new(), Body(body.to_owned()));
95    message.into()
96}