xmpp-rs/src/lib.rs

287 lines
11 KiB
Rust

// Copyright (c) 2019 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
use std::str::FromStr;
use futures::{Future,Stream, Sink, sync::mpsc};
use tokio_xmpp::{
Client as TokioXmppClient,
Event as TokioXmppEvent,
Packet,
};
use xmpp_parsers::{
caps::{compute_disco, hash_caps, Caps},
disco::{DiscoInfoQuery, DiscoInfoResult, Feature, Identity},
hashes::Algo,
iq::{Iq, IqType},
message::{Message, MessageType, Body},
muc::{
Muc,
user::{MucUser, Status},
},
ns,
presence::{Presence, Type as PresenceType},
pubsub::{
event::PubSubEvent,
pubsub::PubSub,
},
stanza_error::{StanzaError, ErrorType, DefinedCondition},
Jid, JidParseError, TryFrom,
};
mod avatar;
#[derive(Debug)]
pub enum ClientType {
Bot,
Pc,
}
impl Default for ClientType {
fn default() -> Self {
ClientType::Bot
}
}
impl ToString for ClientType {
fn to_string(&self) -> String {
String::from(
match self {
ClientType::Bot => "bot",
ClientType::Pc => "pc",
}
)
}
}
#[derive(PartialEq)]
pub enum ClientFeature {
Avatars,
}
pub enum Event {
Online,
Disconnected,
AvatarRetrieved(Jid, String),
RoomJoined(Jid),
}
#[derive(Default)]
pub struct ClientBuilder<'a> {
jid: &'a str,
password: &'a str,
website: String,
disco: (ClientType, String),
features: Vec<ClientFeature>,
}
impl ClientBuilder<'_> {
pub fn new<'a>(jid: &'a str, password: &'a str) -> ClientBuilder<'a> {
ClientBuilder {
jid,
password,
website: String::from("https://gitlab.com/xmpp-rs/tokio-xmpp"),
disco: (ClientType::default(), String::from("tokio-xmpp")),
features: vec![],
}
}
pub fn set_client(mut self, type_: ClientType, name: &str) -> Self {
self.disco = (type_, String::from(name));
self
}
pub fn set_website(mut self, url: &str) -> Self {
self.website = String::from(url);
self
}
pub fn enable_feature(mut self, feature: ClientFeature) -> Self {
self.features.push(feature);
self
}
fn make_disco(&self) -> DiscoInfoResult {
let identities = vec![Identity::new("client", self.disco.0.to_string(),
"en", self.disco.1.to_string())];
let mut features = vec![
Feature::new(ns::DISCO_INFO),
];
if self.features.contains(&ClientFeature::Avatars) {
features.push(Feature::new(format!("{}+notify", ns::AVATAR_METADATA)));
}
DiscoInfoResult {
node: None,
identities,
features,
extensions: vec![],
}
}
fn make_initial_presence(disco: &DiscoInfoResult, node: &str) -> Presence {
let caps_data = compute_disco(disco);
let hash = hash_caps(&caps_data, Algo::Sha_1).unwrap();
let caps = Caps::new(node, hash);
let mut presence = Presence::new(PresenceType::None);
presence.add_payload(caps);
presence
}
pub fn build(self, mut app_tx: mpsc::UnboundedSender<Event>) -> Result<(Box<Future<Item = (), Error = ()>>, Client), JidParseError> {
let disco = self.make_disco();
let node = self.website;
let (sender_tx, sender_rx) = mpsc::unbounded();
let client = TokioXmppClient::new(self.jid, self.password)?;
let (sink, stream) = client.split();
let reader = {
let mut sender_tx = sender_tx.clone();
let jid = self.jid.to_owned();
stream.for_each(move |event| {
// Helper function to send an iq error.
let send_error = |to, id, type_, condition, text: &str| {
let error = StanzaError::new(type_, condition, "en", text);
let iq = Iq::from_error(id, error)
.with_to(to)
.into();
sender_tx.unbounded_send(Packet::Stanza(iq)).unwrap();
};
match event {
TokioXmppEvent::Online => {
let presence = ClientBuilder::make_initial_presence(&disco, &node).into();
let packet = Packet::Stanza(presence);
sender_tx.unbounded_send(packet)
.unwrap();
app_tx.unbounded_send(Event::Online).unwrap();
}
TokioXmppEvent::Disconnected => {
app_tx.unbounded_send(Event::Disconnected).unwrap();
}
TokioXmppEvent::Stanza(stanza) => {
if stanza.is("iq", "jabber:client") {
let iq = Iq::try_from(stanza).unwrap();
if let IqType::Get(payload) = iq.payload {
if payload.is("query", ns::DISCO_INFO) {
let query = DiscoInfoQuery::try_from(payload);
match query {
Ok(query) => {
let mut disco_info = disco.clone();
disco_info.node = query.node;
let iq = Iq::from_result(iq.id, Some(disco_info))
.with_to(iq.from.unwrap())
.into();
sender_tx.unbounded_send(Packet::Stanza(iq)).unwrap();
},
Err(err) => {
send_error(iq.from.unwrap(), iq.id, ErrorType::Modify, DefinedCondition::BadRequest, &format!("{}", err));
},
}
} else {
// We MUST answer unhandled get iqs with a service-unavailable error.
send_error(iq.from.unwrap(), iq.id, ErrorType::Cancel, DefinedCondition::ServiceUnavailable, "No handler defined for this kind of iq.");
}
} else if let IqType::Result(Some(payload)) = iq.payload {
if payload.is("pubsub", ns::PUBSUB) {
let pubsub = PubSub::try_from(payload).unwrap();
let from =
iq.from.clone().unwrap_or(Jid::from_str(&jid).unwrap());
if let PubSub::Items(items) = pubsub {
if items.node.0 == ns::AVATAR_DATA {
avatar::handle_data_pubsub_iq(&from, &mut app_tx, items);
}
}
}
} else if let IqType::Set(_) = iq.payload {
// We MUST answer unhandled set iqs with a service-unavailable error.
send_error(iq.from.unwrap(), iq.id, ErrorType::Cancel, DefinedCondition::ServiceUnavailable, "No handler defined for this kind of iq.");
}
} else if stanza.is("message", "jabber:client") {
let message = Message::try_from(stanza).unwrap();
let from = message.from.clone().unwrap();
for child in message.payloads {
if child.is("event", ns::PUBSUB_EVENT) {
let event = PubSubEvent::try_from(child).unwrap();
if let PubSubEvent::PublishedItems { node, items } = event {
if node.0 == ns::AVATAR_METADATA {
avatar::handle_metadata_pubsub_event(&from, &mut sender_tx, items);
}
}
}
}
} else if stanza.is("presence", "jabber:client") {
let presence = Presence::try_from(stanza).unwrap();
let from = presence.from.clone().unwrap();
for payload in presence.payloads.into_iter() {
let muc_user = match MucUser::try_from(payload) {
Ok(muc_user) => muc_user,
_ => continue
};
for status in muc_user.status.into_iter() {
if status == Status::SelfPresence {
app_tx.unbounded_send(Event::RoomJoined(from.clone())).unwrap();
break;
}
}
}
} else if stanza.is("error", "http://etherx.jabber.org/streams") {
println!("Received a fatal stream error: {}", String::from(&stanza));
} else {
panic!("Unknown stanza: {}", String::from(&stanza));
}
}
}
Ok(())
})
};
let sender = sender_rx
.map_err(|e| panic!("Sink error: {:?}", e))
.forward(sink)
.map(|(rx, mut sink)| {
drop(rx);
let _ = sink.close();
});
let future = reader.select(sender)
.map(|_| ())
.map_err(|_| ());
let agent = Client {
sender_tx,
};
Ok((Box::new(future), agent))
}
}
pub struct Client {
sender_tx: mpsc::UnboundedSender<Packet>,
}
impl Client {
pub fn join_room(&mut self, room: Jid, lang: &str, status: &str) {
let mut presence = Presence::new(PresenceType::None)
.with_to(Some(room))
.with_payloads(vec![Muc::new().into()]);
presence.set_status(String::from(lang), String::from(status));
let presence = presence.into();
self.sender_tx.unbounded_send(Packet::Stanza(presence))
.unwrap();
}
pub fn send_message(&mut self, recipient: Jid, type_: MessageType, lang: &str, text: &str) {
let mut message = Message::new(Some(recipient));
message.type_ = type_;
message.bodies.insert(String::from(lang), Body(String::from(text)));
let message = message.into();
self.sender_tx.unbounded_send(Packet::Stanza(message))
.unwrap();
}
}