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simple-xmpp.js
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simple-xmpp.js
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/**
The MIT License
Copyright (c) 2011 Arunoda Susiripala
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
var xmpp = require('node-xmpp');
var EventEmitter = require('events').EventEmitter;
var util = require('util');
var STATUS = {
AWAY: "away",
DND: "dnd",
XA: "xa",
ONLINE: "online",
OFFLINE: "offline"
};
module.exports = new SimpleXMPP();
function SimpleXMPP() {
//setting status here
this.STATUS = STATUS;
var config;
var conn;
var probeBuddies = {};
var events = new EventEmitter();
this.on = function() {
events.on.apply(events, arguments);
};
this.send = function(to, message) {
if(conn) {
var stanza = new xmpp.Element('message', { to: to, type: 'chat' });
stanza.c('body').t(message);
conn.send(stanza);
} else {
console.log('not connected yet!');
}
};
this.probe = function(buddy, callback) {
var stanza = new xmpp.Element('presence', {type: 'probe', to: buddy});
events.once('probe_' + buddy, callback);
probeBuddies[buddy] = true;
conn.send(stanza);
};
this.connect = function(params) {
config = params
conn = new xmpp.Client(params);
conn.on('online', function(){
conn.send(new xmpp.Element('presence'));
events.emit('online');
//make the connection live
setInterval(function() {
conn.send(new xmpp.Element('presence'));
}, 1000 * 10)
});
conn.on('stanza', function(stanza) {
console.log(stanza);
//looking for message stanza
if (stanza.is('message')) {
//getting the chat message
if(stanza.attrs.type == 'chat') {
var body = stanza.getChild('body');
if(body) {
var message = body.getText();
var from = stanza.attrs.from;
events.emit('chat', from, message);
}
}
} else if(stanza.is('presence')) {
//looking for presence stenza for availability changes
var from = stanza.attrs.from;
if(from) {
var id = from.split('/')[0];
var state = (stanza.getChild('show'))? stanza.getChild('show').getText(): STATUS.ONLINE;
state = (state == 'chat')? STATUS.ONLINE : state;
state = (stanza.attrs.type == STATUS.OFFLINE)? STATUS.OFFLINE : state;
//checking if this is based on probe
if(probeBuddies[id]) {
events.emit('probe_' + id, state);
delete probeBuddies[id];
} else {
//specifying roster changes
events.emit('buddy', id, state);
}
}
}
});
conn.on('error', function(err) {
events.emit('error', err);
});
};
}