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::{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 (mut 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 send = move |stanza| {
40        sink.start_send(stanza).expect("start_send");
41    };
42    // Main loop, processes events
43    let done = stream.for_each(|event| {
44        if event.is_online() {
45            println!("Online!");
46
47            let presence = make_presence();
48            send(presence);
49        } else if let Some(message) = event.into_stanza()
50            .and_then(|stanza| Message::try_from(stanza).ok())
51        {
52            // This is a message we'll echo
53            match (message.from, message.bodies.get("")) {
54                (Some(from), Some(body)) =>
55                    if message.type_ != MessageType::Error {
56                        let reply = make_reply(from, &body.0);
57                        send(reply);
58                    },
59                _ => (),
60            }
61        }
62
63        Box::new(future::ok(()))
64    });
65
66    // Start polling `done`
67    match core.run(done) {
68        Ok(_) => (),
69        Err(e) => {
70            println!("Fatal: {}", e);
71            ()
72        }
73    }
74}
75
76// Construct a <presence/>
77fn make_presence() -> Element {
78    let mut presence = Presence::new(PresenceType::None);
79    presence.show = PresenceShow::Chat;
80    presence.statuses.insert(String::from("en"), String::from("Echoing messages."));
81    presence.into()
82}
83
84// Construct a chat <message/>
85fn make_reply(to: Jid, body: &str) -> Element {
86    let mut message = Message::new(Some(to));
87    message.bodies.insert(String::new(), Body(body.to_owned()));
88    message.into()
89}