567 lines
22 KiB
CoffeeScript
567 lines
22 KiB
CoffeeScript
###
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# Copyright 2013, 2014 Zaid Abdulla
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#
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# GenieACS is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# GenieACS is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with GenieACS. If not, see <http://www.gnu.org/licenses/>.
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#
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# This file incorporates work covered by the following copyright and
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# permission notice:
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#
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# Copyright 2013 Fanoos Telecom
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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###
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config = require './config'
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common = require './common'
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util = require 'util'
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soap = require './soap'
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tasks = require './tasks'
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db = require './db'
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presets = require './presets'
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mongodb = require 'mongodb'
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apiFunctions = require './api-functions'
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customCommands = require './custom-commands'
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crypto = require 'crypto'
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zlib = require 'zlib'
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updateDevice = require './update-device'
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# Used to reject new TR-069 sessions when under load
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holdUntil = Date.now()
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writeResponse = (currentRequest, res) ->
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if config.get('DEBUG', currentRequest.session.deviceId)
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dump = "# RESPONSE #{new Date(Date.now())}\n" + JSON.stringify(res.headers) + "\n#{res.data}\n\n"
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require('fs').appendFile("../debug/#{currentRequest.session.deviceId}.dump", dump, (err) ->
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throw err if err
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)
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# respond using the same content-encoding as the request
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if currentRequest.httpRequest.headers['content-encoding']? and res.data.length > 0
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switch currentRequest.httpRequest.headers['content-encoding']
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when 'gzip'
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res.headers['Content-Encoding'] = 'gzip'
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compress = zlib.gzip
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when 'deflate'
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res.headers['Content-Encoding'] = 'deflate'
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compress = zlib.deflate
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if compress?
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compress(res.data, (err, data) ->
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res.headers['Content-Length'] = data.length
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currentRequest.httpResponse.writeHead(res.code, res.headers)
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currentRequest.httpResponse.end(data)
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)
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else
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res.headers['Content-Length'] = res.data.length
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currentRequest.httpResponse.writeHead(res.code, res.headers)
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currentRequest.httpResponse.end(res.data)
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endSession = (currentRequest) ->
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db.redisClient.del("session_#{currentRequest.sessionId}", (err, res) ->
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throw err if err
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res = soap.response(null)
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writeResponse(currentRequest, res)
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)
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inform = (currentRequest, cwmpRequest) ->
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# If overloaded, ask CPE to retry in 5 mins
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if Date.now() < holdUntil
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res = {code : 503, headers : {'Retry-After' : 300}, data : ''}
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return writeResponse(currentRequest, res)
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now = new Date(Date.now())
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if config.get('LOG_INFORMS', currentRequest.session.deviceId)
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util.log("#{currentRequest.session.deviceId}: Inform (#{cwmpRequest.methodRequest.event}); retry count #{cwmpRequest.methodRequest.retryCount}")
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parameterNames = (p[0] for p in cwmpRequest.methodRequest.parameterList)
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informHash = crypto.createHash('md5').update(JSON.stringify(parameterNames)).update(JSON.stringify(config.CUSTOM_COMMANDS)).digest('hex')
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deviceUpdates = {parameterValues : cwmpRequest.methodRequest.parameterList, informEvents : cwmpRequest.methodRequest.event}
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# Delete all pending tasks on bootstrap (e.g. factory reset)
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if '0 BOOTSTRAP' in cwmpRequest.methodRequest.event
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lastBootstrap = now
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db.tasksCollection.remove({device : currentRequest.session.deviceId}, (err, removed) ->
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throw err if err
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)
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db.redisClient.get("#{currentRequest.session.deviceId}_inform_hash", (err, oldInformHash) ->
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throw err if err
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updateAndRespond = () ->
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updateDevice.commitUpdates(currentRequest.session.deviceId, deviceUpdates, false, (err) ->
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throw err if err
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db.redisClient.setex("session_#{currentRequest.sessionId}", currentRequest.session.sessionTimeout, JSON.stringify(currentRequest.session), (err) ->
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throw err if err
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res = soap.response({
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id : cwmpRequest.id,
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methodResponse : {type : 'InformResponse'},
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cwmpVersion : cwmpRequest.cwmpVersion
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})
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if !!cookiesPath = config.get('COOKIES_PATH', currentRequest.session.deviceId)
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res.headers['Set-Cookie'] = "session=#{currentRequest.sessionId}; Path=#{cookiesPath}"
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else
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res.headers['Set-Cookie'] = "session=#{currentRequest.sessionId}"
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writeResponse(currentRequest, res)
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)
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)
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if oldInformHash == informHash and not lastBootstrap?
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return updateAndRespond()
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db.redisClient.setex("#{currentRequest.session.deviceId}_inform_hash", config.get('PRESETS_CACHE_DURATION', currentRequest.session.deviceId), informHash, (err, res) ->
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throw err if err
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)
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# populate projection and parameterStructure
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parameterStructure = {}
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projection = {}
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projection._customCommands = 1
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projection._timestamp = 1
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projection._lastBootstrap = 1
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for param in parameterNames
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ref = parameterStructure
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path = ''
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for p in param.split('.')
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ref[p] ?= {_path : path}
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ref = ref[p]
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path += p + '.'
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projection[path + '_timestamp'] = 1
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db.devicesCollection.findOne({'_id' : currentRequest.session.deviceId}, projection, (err, device) ->
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throw err if err
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lastBootstrap ?= device?._lastBootstrap
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_tasks = []
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# For any parameters that aren't in the DB model, issue a refresh task
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traverse = (reference, actual) ->
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for k of reference
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continue if k[0] == '_'
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if not actual[k]?._timestamp? or actual[k]._timestamp < lastBootstrap
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_tasks.push({device: currentRequest.session.deviceId, name : 'refreshObject', objectName : reference[k]._path})
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else
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traverse(reference[k], actual[k])
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if device?
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traverse(parameterStructure, device)
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# Update custom commands if needed
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deviceCustomCommands = {}
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deviceCustomCommands[k] = v._timestamp for k,v of device._customCommands
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for cmd in customCommands.getDeviceCustomCommandNames(currentRequest.session.deviceId)
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if not (deviceCustomCommands[cmd]?._timestamp < lastBootstrap)
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_tasks.push({device: currentRequest.session.deviceId, name: 'customCommand', command: "#{cmd} init"})
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delete deviceCustomCommands[cmd]
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for cmd of deviceCustomCommands
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deviceUpdates.deletedObjects ?= []
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deviceUpdates.deletedObjects.push("_customCommands.#{cmd}")
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# clear presets hash if parameters are potentially modified
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if _tasks.length > 0
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db.redisClient.del("#{currentRequest.session.deviceId}_presets_hash", (err) ->
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throw err if err
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)
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apiFunctions.insertTasks(_tasks, {}, () ->
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updateAndRespond()
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)
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else
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deviceIdDetails = {}
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for k, v of cwmpRequest.methodRequest.deviceId
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deviceIdDetails["_#{k}"] = v
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db.devicesCollection.insert({_id : currentRequest.session.deviceId, _registered : now, _deviceId : deviceIdDetails}, (err) ->
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throw err if err
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util.log("#{currentRequest.session.deviceId}: New device registered")
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_tasks.push({device: currentRequest.session.deviceId, name : 'refreshObject', objectName : ''})
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for cmd in customCommands.getDeviceCustomCommandNames(currentRequest.session.deviceId)
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_tasks.push({device: currentRequest.session.deviceId, name: 'customCommand', command: "#{cmd} init"})
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apiFunctions.insertTasks(_tasks, {}, () ->
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updateAndRespond()
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)
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)
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)
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)
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runTask = (currentRequest, task, methodResponse) ->
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timeDiff = process.hrtime()
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tasks.task(task, methodResponse, (err, status, methodRequest, deviceUpdates) ->
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throw err if err
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# TODO handle error
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updateDevice.queueUpdates(currentRequest.session.deviceId, deviceUpdates, (err) ->
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throw err if err
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timeDiff = process.hrtime(timeDiff)[0] + 1
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if timeDiff > 3 # in seconds
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# Server under load. Hold new sessions temporarily.
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holdUntil = Math.max(Date.now() + timeDiff * 2000, holdUntil)
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save = status & tasks.STATUS_SAVE
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switch status & ~tasks.STATUS_SAVE
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when tasks.STATUS_OK
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f = () ->
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db.redisClient.setex(String(task._id), currentRequest.session.sessionTimeout, JSON.stringify(task), (err) ->
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throw err if err
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res = soap.response({
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id : task._id,
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methodRequest : methodRequest,
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cwmpVersion : currentRequest.session.cwmpVersion
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})
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writeResponse(currentRequest, res)
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updateSessionExpiry(currentRequest)
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)
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if save
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updateDevice.commitUpdates(currentRequest.session.deviceId, deviceUpdates, true, (err) ->
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throw err if err
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db.tasksCollection.update({_id : mongodb.ObjectID(String(task._id))}, {$set : {session : task.session}}, (err) ->
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throw err if err
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f()
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)
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)
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else
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f()
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when tasks.STATUS_COMPLETED
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util.log("#{currentRequest.session.deviceId}: Completed task #{task.name}(#{task._id})")
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updateDevice.commitUpdates(currentRequest.session.deviceId, deviceUpdates, true, (err) ->
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throw err if err
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db.tasksCollection.remove({'_id' : mongodb.ObjectID(String(task._id))}, (err, removed) ->
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throw err if err
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db.redisClient.del(String(task._id), (err, res) ->
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throw err if err
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nextTask(currentRequest)
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)
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)
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)
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when tasks.STATUS_FAULT
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retryAfter = config.get('RETRY_DELAY', currentRequest.session.deviceId) * Math.pow(2, task.retries ? 0)
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util.log("#{currentRequest.session.deviceId}: Fault response for task #{task._id}. Retrying after #{retryAfter} seconds.")
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taskUpdate = {fault : task.fault, timestamp : new Date(Date.now() + retryAfter * 1000)}
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if save
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taskUpdate.session = task.session
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db.tasksCollection.update({_id : mongodb.ObjectID(String(task._id))}, {$set : taskUpdate, $inc : {retries : 1}}, (err) ->
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throw err if err
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nextTask(currentRequest)
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)
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else
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throw new Error('Unknown task status')
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)
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)
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isTaskExpired = (task) ->
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task.expiry <= new Date()
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assertPresets = (currentRequest) ->
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db.redisClient.mget("#{currentRequest.session.deviceId}_presets_hash", 'presets_hash', (err, res) ->
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throw err if err
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devicePresetsHash = res[0]
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presetsHash = res[1]
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if devicePresetsHash? and devicePresetsHash == presetsHash
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# no discrepancy, end the session
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endSession(currentRequest)
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else
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PRESETS_CACHE_DURATION = config.get('PRESETS_CACHE_DURATION', currentRequest.session.deviceId)
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db.getPresetsObjectsAliases((allPresets, allObjects, allAliases) ->
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if not presetsHash?
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presetsHash = presets.calculatePresetsHash(allPresets, allObjects)
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db.redisClient.setex('presets_hash', PRESETS_CACHE_DURATION, presetsHash, (err, res) ->
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throw err if err
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)
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presets.getDevicePreset(currentRequest.session.deviceId, allPresets, allObjects, allAliases, (devicePreset) ->
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presets.processDevicePreset(currentRequest.session.deviceId, devicePreset, (taskList, addTags, deleteTags, expiry) ->
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db.redisClient.setex("#{currentRequest.session.deviceId}_presets_hash", Math.floor(Math.max(1, expiry - config.get('PRESETS_TIME_PADDING'))), presetsHash, (err, res) ->
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throw err if err
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)
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if addTags.length + deleteTags.length + taskList.length
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util.log("#{currentRequest.session.deviceId}: Presets discrepancy found")
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if addTags.length + deleteTags.length
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util.log("#{currentRequest.session.deviceId}: Updating tags +(#{addTags}) -(#{deleteTags})")
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if deleteTags.length
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db.devicesCollection.update({'_id' : currentRequest.session.deviceId}, {'$pull' : {'_tags' : {'$in' : deleteTags}}}, {}, (err, count) ->
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throw err if err
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)
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if addTags.length
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db.devicesCollection.update({'_id' : currentRequest.session.deviceId}, {'$addToSet' : {'_tags' : {'$each' : addTags}}}, {}, (err, count) ->
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throw err if err
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)
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if taskList.length
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t.expiry = expiry for t in taskList
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apiFunctions.insertTasks(taskList, allAliases, (err, taskList) ->
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throw err if err
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task = taskList[0]
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util.log("#{currentRequest.session.deviceId}: Started task #{task.name}(#{task._id})")
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runTask(currentRequest, task, {})
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)
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else
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endSession(currentRequest)
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)
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)
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)
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)
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nextTask = (currentRequest) ->
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now = new Date()
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cur = db.tasksCollection.find({'device' : currentRequest.session.deviceId, timestamp : {$lte : now}}).sort(['timestamp']).limit(1)
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cur.nextObject((err, task) ->
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throw err if err
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if not task
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# no more tasks, check presets discrepancy
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assertPresets(currentRequest)
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else if isTaskExpired(task)
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util.log("#{currentRequest.session.deviceId}: Task is expired #{task.name}(#{task._id})")
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db.tasksCollection.remove({'_id' : mongodb.ObjectID(String(task._id))}, {safe: true}, (err, removed) ->
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throw err if err
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nextTask(currentRequest)
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)
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else
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util.log("#{currentRequest.session.deviceId}: Started task #{task.name}(#{task._id})")
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updateDevice.clearUpdatesQueue(currentRequest.session.deviceId, (err) ->
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throw err if err
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runTask(currentRequest, task, {})
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)
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)
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getSession = (httpRequest, callback) ->
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# Separation by comma is important as some devices don't comform to standard
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COOKIE_REGEX = /\s*([a-zA-Z0-9\-_]+?)\s*=\s*"?([a-zA-Z0-9\-_]*?)"?\s*(,|;|$)/g
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while match = COOKIE_REGEX.exec(httpRequest.headers.cookie)
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sessionId = match[2] if match[1] == 'session'
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return callback() if not sessionId?
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db.redisClient.get("session_#{sessionId}", (err, res) ->
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throw err if err
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return callback(sessionId, JSON.parse(res))
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)
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updateSessionExpiry = (currentRequest) ->
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db.redisClient.expire("session_#{currentRequest.sessionId}", currentRequest.session.sessionTimeout, (err, res) ->
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throw err if err
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if not res
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# Resave session in the very rare case when session cache expires while processing request
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db.redisClient.setex("session_#{currentRequest.sessionId}", currentRequest.session.sessionTimeout, JSON.stringify(currentRequest.session), (err) ->
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throw err if err
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)
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)
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listener = (httpRequest, httpResponse) ->
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if httpRequest.method != 'POST'
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httpResponse.writeHead 405, {'Allow': 'POST'}
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httpResponse.end('405 Method Not Allowed')
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return
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if httpRequest.headers['content-encoding']?
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switch httpRequest.headers['content-encoding']
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when 'gzip'
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stream = httpRequest.pipe(zlib.createGunzip())
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when 'deflate'
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stream = httpRequest.pipe(zlib.createInflate())
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else
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httpResponse.writeHead(415)
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httpResponse.end('415 Unsupported Media Type')
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return
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else
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stream = httpRequest
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chunks = []
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bytes = 0
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stream.on('data', (chunk) ->
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chunks.push(chunk)
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bytes += chunk.length
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)
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httpRequest.getBody = () ->
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# Write all chunks into a Buffer
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body = new Buffer(bytes)
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offset = 0
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chunks.forEach((chunk) ->
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chunk.copy(body, offset, 0, chunk.length)
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offset += chunk.length
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)
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return body
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stream.on('end', () ->
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getSession(httpRequest, (sessionId, session) ->
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cwmpRequest = soap.request(httpRequest, session?.cwmpVersion)
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if not session?
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if cwmpRequest.methodRequest?.type isnt 'Inform'
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httpResponse.writeHead(400)
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httpResponse.end('Session is expired')
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return
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deviceId = common.generateDeviceId(cwmpRequest.methodRequest.deviceId)
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sessionId = crypto.randomBytes(8).toString('hex')
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session = {
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deviceId : deviceId,
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cwmpVersion : cwmpRequest.cwmpVersion,
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sessionTimeout : cwmpRequest.sessionTimeout ? config.get('SESSION_TIMEOUT', deviceId)
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}
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httpRequest.connection.setTimeout(session.sessionTimeout * 1000)
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currentRequest = {
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httpRequest : httpRequest,
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httpResponse : httpResponse,
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sessionId : sessionId,
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session : session
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}
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if config.get('DEBUG', currentRequest.session.deviceId)
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dump = "# REQUEST #{new Date(Date.now())}\n" + JSON.stringify(httpRequest.headers) + "\n#{httpRequest.getBody()}\n\n"
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require('fs').appendFile("../debug/#{currentRequest.session.deviceId}.dump", dump, (err) ->
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throw err if err
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)
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if cwmpRequest.methodRequest?
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if cwmpRequest.methodRequest.type is 'Inform'
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inform(currentRequest, cwmpRequest)
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else if cwmpRequest.methodRequest.type is 'GetRPCMethods'
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util.log("#{currentRequest.session.deviceId}: GetRPCMethods")
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res = soap.response({
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id : cwmpRequest.id,
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methodResponse : {type : 'GetRPCMethodsResponse', methodList : ['Inform', 'GetRPCMethods', 'TransferComplete', 'RequestDownload']},
|
|
cwmpVersion : currentRequest.session.cwmpVersion
|
|
})
|
|
writeResponse(currentRequest, res)
|
|
updateSessionExpiry(currentRequest)
|
|
else if cwmpRequest.methodRequest.type is 'TransferComplete'
|
|
# do nothing
|
|
util.log("#{currentRequest.session.deviceId}: Transfer complete")
|
|
res = soap.response({
|
|
id : cwmpRequest.id,
|
|
methodResponse : {type : 'TransferCompleteResponse'},
|
|
cwmpVersion : currentRequest.session.cwmpVersion
|
|
})
|
|
writeResponse(currentRequest, res)
|
|
updateSessionExpiry(currentRequest)
|
|
else if cwmpRequest.methodRequest.type is 'RequestDownload'
|
|
requestDownloadResponse = () ->
|
|
res = soap.response({
|
|
id : cwmpRequest.id,
|
|
methodResponse : {type : 'RequestDownloadResponse'},
|
|
cwmpVersion : currentRequest.session.cwmpVersion
|
|
})
|
|
writeResponse(currentRequest, res)
|
|
updateSessionExpiry(currentRequest)
|
|
fileType = cwmpRequest.methodRequest.fileType
|
|
util.log("#{currentRequest.session.deviceId}: RequestDownload (#{fileType})")
|
|
if fileType isnt '1 Firmware Upgrade Image'
|
|
# Only supporting firmware upgrade for now
|
|
return requestDownloadResponse()
|
|
|
|
db.getPresetsObjectsAliases((allPresets, allObjects, allAliases) ->
|
|
presets.getDevicePreset(currentRequest.session.deviceId, allPresets, allObjects, allAliases, (devicePreset) ->
|
|
presetSoftwareVersion = devicePreset.softwareVersion?.preset
|
|
currentSoftwareVersion = devicePreset.softwareVersion?.current._value
|
|
if presetSoftwareVersion? and presetSoftwareVersion != currentSoftwareVersion
|
|
deviceIdStruct = common.parseDeviceId(currentRequest.session.deviceId)
|
|
db.filesCollection.findOne({'metadata.fileType' : '1 Firmware Upgrade Image', 'metadata.oui' : deviceIdStruct.oui, 'metadata.productClass' : deviceIdStruct.productClass, 'metadata.version' : presetSoftwareVersion}, {_id : 1}, (err, file) ->
|
|
throw err if err
|
|
if not file?
|
|
util.error("#{currentRequest.session.deviceId}: Firmware image not found (#{presetSoftwareVersion})")
|
|
return requestDownloadResponse()
|
|
|
|
task = {
|
|
device : currentRequest.session.deviceId,
|
|
name : 'download',
|
|
file : file['_id']
|
|
}
|
|
apiFunctions.insertTasks(task, allAliases, (err, tasks) ->
|
|
throw err if err
|
|
return requestDownloadResponse()
|
|
)
|
|
)
|
|
else
|
|
return requestDownloadResponse()
|
|
)
|
|
)
|
|
else
|
|
throw new Error('ACS method not supported')
|
|
else if cwmpRequest.methodResponse?
|
|
taskId = cwmpRequest.id
|
|
|
|
db.getTask(taskId, (err, task) ->
|
|
throw err if err
|
|
if not task
|
|
nextTask(currentRequest)
|
|
else
|
|
runTask(currentRequest, task, cwmpRequest.methodResponse)
|
|
)
|
|
else if cwmpRequest.fault?
|
|
taskId = cwmpRequest.id
|
|
if not taskId
|
|
# Fault not related to a task. End the session.
|
|
return endSession(currentRequest)
|
|
|
|
db.getTask(taskId, (err, task) ->
|
|
throw err if err
|
|
if not task
|
|
nextTask(currentRequest)
|
|
else
|
|
runTask(currentRequest, task, cwmpRequest.fault)
|
|
)
|
|
else
|
|
# cpe sent empty response. start sending acs requests
|
|
nextTask(currentRequest)
|
|
)
|
|
)
|
|
|
|
|
|
exports.listener = listener
|