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index.js
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index.js
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/**
* hive.js
* Copyright (C) 2013-2016 Marcel Klehr <[email protected]>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Mozilla Public License version 2
* as published by the Mozilla Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the Mozilla Public License
* along with this program. If not, see <https://www.mozilla.org/en-US/MPL/2.0/>.
*/
var Primus = require('primus')
, dataplex = require('dataplex')
, co = require('co')
, gulf = require('gulf')
, through = require('through2')
module.exports = setup
module.exports.consumes = ['hooks','http','sync', 'auth', 'broadcast', 'config']
module.exports.provides = ['interfaceStream']
function setup(plugin, imports, register) {
var hooks = imports.hooks
, http = imports.http
, sync = imports.sync
, auth = imports.auth
, broadcast = imports.broadcast
, config = imports.config
// Hack, because primus and the router don't know about each other
http.router.all('/stream/*', function*(){this.respond=false})
var primus = new Primus(http.server, {
pathname:'/stream'
, authorization: null
, parser: 'binary'
, transformer: config.get('interfaceStream:transport')
})
primus.use('client-side-binary-converter', {
client: function(primus) {
primus.transform('incoming', function (packet) {
packet.data = new Buffer(packet.data)
});
primus.transform('outgoing', function (packet) {
// convert node Buffers to Arraybuffers as per
// https://stackoverflow.com/questions/8609289/convert-a-binary-nodejs-buffer-to-javascript-arraybuffer#12101012
// var arrayBuffer = new Uint8Array(nodeBuffer).buffer
packet.data = (new Uint8Array(packet.data)).buffer
});
}
})
primus.on('connection',function(stream) {
var plex = dataplex()
stream.pipe(plex).pipe(stream)
plex.add('/document/:id/sync', function(opts) {
// Set up link authorization
var link = new gulf.Link({
authenticate: function(credentials, cb) {
co(function*() {
return yield auth.authenticate('token', credentials)
})
.then((user) => {
cb(null, user.id)
})
.catch(cb)
}
, authorizeWrite: function(msg, user, cb) {
co(function*() {
if(!plex.user) return false
var allowed = false
switch(msg[0]) {
case 'edit':
allowed = yield auth.authorize(plex.user, 'document:change', {id: opts.id})
break;
case 'ack':
case 'requestInit':
allowed = yield auth.authorize(plex.user, 'document:read', {id: opts.id})
break;
}
return allowed
})
.then(function(allowed) {
cb(null, allowed)
})
.catch(cb)
}
, authorizeRead:function(msg, user, cb) {
co(function*() {
if(!plex.user) return false
var allowed = false
switch(msg[0]) {
case 'edit':
allowed = yield auth.authorize(plex.user, 'document:read', {id: opts.id})
break;
case 'ack':
case 'init':
allowed = yield auth.authorize(plex.user, 'document:read', {id: opts.id})
break;
}
return allowed
})
.then(function(allowed) {
cb(null, allowed)
})
.catch(cb)
}
})
co(function*() {
// load document and add slave link
var doc = yield sync.getDocument(opts.id)
doc.attachSlaveLink(link)
})
.then(function() {}, function(er) { console.log(er.stack || er)})
stream.on('end', () => link.end())
return link
})
plex.add('/document/:id/broadcast', function(opts) {
var b = broadcast.document(opts.id, plex.user)
stream.on('end', function() {
b.emit('close')
})
return b
})
plex.add('/authenticate', function() {
return through(function(chunk, enc, cb) {
var that = this
co(function*() {
try {
plex.user = yield auth.authenticate('token', chunk.toString('utf8'))
if(plex.user) return that.push(JSON.stringify({authenticated: true}))
}catch(e) { }
that.push(JSON.stringify({authenticated: false }))
})
.then(cb)
.catch(cb)
})
})
co(function*() {
yield hooks.callHook('interface-stream:connect', plex)
}).then(function() {})
})
register(null, {interfaceStream: {primus: primus}})
}