Major updates paving the road support ACS methods

acs.coffee

@@ -21,7 +21,7 @@ applyConfigurations = (currentRequest, taskList) ->
       runTask(currentRequest, task, {})
     )
   else
-    res = tr069.response(currentRequest.sessionId, {}, {})
+    res = tr069.response(null, {}, {})
     writeResponse(currentRequest, res)
 
 
@@ -91,14 +91,15 @@ updateDevice = (currentRequest, actions, callback) ->
     callback() if callback?
 
 
-runTask = (currentRequest, task, cwmpRequest) ->
+runTask = (currentRequest, task, methodResponse) ->
   cwmpResponse = {}
-  actions = tasks.task(task, cwmpRequest, cwmpResponse)
+  actions = tasks.task(task, methodResponse, cwmpResponse)
+
   updateDevice(currentRequest, actions)
 
   if Object.keys(cwmpResponse).length > 0
     db.updateTask(task, (err) ->
-      res = tr069.response(currentRequest.sessionId, cwmpResponse, {task : String(task._id)})
+      res = tr069.response(task._id, cwmpResponse)
       writeResponse(currentRequest, res)
     )
     return
@@ -107,7 +108,7 @@ runTask = (currentRequest, task, cwmpRequest) ->
   db.memcached.del(String(task._id))
   db.tasksCollection.remove({'_id' : mongodb.ObjectID(String(task._id))}, {safe: true}, (err, removed) ->
     util.log("#{currentRequest.deviceId}: Completed task #{task.name}(#{task._id})")
-    cookies = {task : null}
+    cookies = {}
     nextTask(currentRequest, cookies)
   )
 
@@ -115,7 +116,6 @@ runTask = (currentRequest, task, cwmpRequest) ->
 nextTask = (currentRequest, cookies) ->
   cur = db.tasksCollection.find({'device' : currentRequest.deviceId}).sort(['timestamp']).limit(1)
   cur.nextObject( (err, task) ->
-    cwmpRequest = {}
     cwmpResponse = {}
 
     if not task
@@ -136,22 +136,22 @@ nextTask = (currentRequest, cookies) ->
               )
             else
               # no discrepancy, return empty response
-              res = tr069.response(currentRequest.sessionId, cwmpResponse, cookies)
+              res = tr069.response(null, cwmpResponse, cookies)
               writeResponse(currentRequest, res)
           )
         else
           # no discrepancy, return empty response
-          res = tr069.response(currentRequest.sessionId, cwmpResponse, cookies)
+          res = tr069.response(null, cwmpResponse, cookies)
           writeResponse(currentRequest, res)
       )
       return
     else if task.fault?
       # last task was faulty. Do nothing until until task is deleted
-      res = tr069.response(currentRequest.sessionId, cwmpResponse, cookies)
+      res = tr069.response(null, cwmpResponse, cookies)
       writeResponse(currentRequest, res)
     else
       util.log("#{currentRequest.deviceId}: Started task #{task.name}(#{task._id})")
-      runTask(currentRequest, task, cwmpRequest)
+      runTask(currentRequest, task, {})
   )
 
 
@@ -209,11 +209,10 @@ else
       cwmpRequest = tr069.request(httpRequest)
 
       # get deviceId either from inform xml or cookie
-      if cwmpRequest.deviceId?
-        currentRequest.deviceId = common.getDeviceId(cwmpRequest.deviceId)
-        cookies.DeviceId = currentRequest.deviceId
+      if cwmpRequest.methodRequest? and cwmpRequest.methodRequest.type is 'Inform'
+        cookies.deviceId = currentRequest.deviceId = common.getDeviceId(cwmpRequest.methodRequest.deviceId)
       else
-        currentRequest.deviceId = cwmpRequest.cookies.DeviceId
+        currentRequest.deviceId = cwmpRequest.cookies.deviceId
 
       if config.DEBUG_DEVICES[currentRequest.deviceId]
         dump = "# REQUEST #{new Date(Date.now())}\n" + JSON.stringify(httpRequest.headers) + "\n#{httpRequest.getBody()}\n\n"
@@ -221,38 +220,40 @@ else
           throw new Error(err) if err
         )
 
-      if cwmpRequest.inform
-        cwmpResponse.inform = true
-        cookies.ID = currentRequest.sessionId = cwmpRequest.sessionId
+      if cwmpRequest.methodRequest?
+        if cwmpRequest.methodRequest.type == 'Inform'
+          cwmpResponse.methodResponse = {type : 'InformResponse'}
 
           if config.LOG_INFORMS
-          util.log("#{currentRequest.deviceId}: Inform (#{cwmpRequest.eventCodes}); retry count #{cwmpRequest.retryCount}")
+            util.log("#{currentRequest.deviceId}: Inform (#{cwmpRequest.methodRequest.event}); retry count #{cwmpRequest.methodRequest.retryCount}")
 
-        updateDevice(currentRequest, {'inform' : true, 'parameterValues' : cwmpRequest.informParameterValues}, (err) ->
-          res = tr069.response(currentRequest.sessionId, cwmpResponse, cookies)
+          updateDevice(currentRequest, {'inform' : true, 'parameterValues' : cwmpRequest.methodRequest.parameterList}, (err) ->
+            res = tr069.response(cwmpRequest.id, cwmpResponse, cookies)
             writeResponse(currentRequest, res)
           )
-        return
-
-      currentRequest.sessionId = cwmpRequest.cookies.ID
-      taskId = cwmpRequest.cookies.task
-
-      if not taskId
-        nextTask(currentRequest, cookies)
         else
+          throw Error('ACS method not supported')
+      else if cwmpRequest.methodResponse?
+        taskId = cwmpRequest.id
+
         db.getTask(taskId, (task) ->
           if not task
             nextTask(currentRequest, cookies)
+          else
+            runTask(currentRequest, task, cwmpRequest.methodResponse)
+        )
       else if cwmpRequest.fault?
-            util.log("#{currentRequest.deviceId}: Fault response for task #{task._id}")
-            db.tasksCollection.update({_id : mongodb.ObjectID(String(task._id))}, {$set : {fault : cwmpRequest.fault}}, (err) ->
+        taskId = cwmpRequest.id
+        util.log("#{currentRequest.deviceId}: Fault response for task #{taskId}")
+        db.tasksCollection.update({_id : mongodb.ObjectID(taskId)}, {$set : {fault : cwmpRequest.fault}}, (err) ->
           # Faulty task. No more work to do until task is deleted.
-              res = tr069.response(currentRequest.sessionId, cwmpResponse, cookies)
+          res = tr069.response(null, cwmpResponse, cookies)
           writeResponse(currentRequest, res)
         )
       else
-            runTask(currentRequest, task, cwmpRequest)
-        )
+        # cpe sent empty response. start sending acs requests
+        nextTask(currentRequest, cookies)
+
 
   server.listen config.ACS_PORT, config.ACS_INTERFACE
   #console.log "Server listening on port #{config.ACS_PORT}"

tasks.coffee

@@ -1,13 +1,13 @@
 common = require './common'
 BATCH_SIZE = 16
 
-this.init = (task, cwmpRequest, cwmpResponse) ->
+this.init = (task, methodResponse, cwmpResponse) ->
   ret = {}
   if not task.subtask?
     task.subtask = {'name' : 'getParameterNames', 'parameterPath' : '', 'nextLevel' : false}
 
   if task.subtask.name == 'getParameterNames'
-    common.extend(ret, this.getParameterNames(task.subtask, cwmpRequest, cwmpResponse))
+    common.extend(ret, this.getParameterNames(task.subtask, methodResponse, cwmpResponse))
     if ret.parameterNames? # task finished
       parameterNames = []
       for p in ret.parameterNames
@@ -16,37 +16,44 @@ this.init = (task, cwmpRequest, cwmpResponse) ->
       task.subtask = {'name' : 'getParameterValues', 'parameterNames' : parameterNames}
 
   if task.subtask.name == 'getParameterValues'
-    common.extend(ret, this.getParameterValues(task.subtask, cwmpRequest, cwmpResponse))
+    common.extend(ret, this.getParameterValues(task.subtask, methodResponse, cwmpResponse))
 
   ret
 
-this.getParameterNames = (task, cwmpRequest, cwmpResponse) ->
-  if cwmpRequest.getParameterNamesResponse?
-    return {'parameterNames' : cwmpRequest.getParameterNamesResponse}
+this.getParameterNames = (task, methodResponse, cwmpResponse) ->
+  if methodResponse.type is 'GetParameterNamesResponse'
+    return {'parameterNames' : methodResponse.parameterList}
   else
-    cwmpResponse.getParameterNames = [task.parameterPath, if task.nextLevel? task.nextLevel else false]
+    cwmpResponse.methodRequest = {
+      type : 'GetParameterNames',
+      parameterPath : task.parameterPath,
+      nextLevel : if task.nextLevel? then task.nextLevel else false
+    }
   return
 
-this.getParameterValues = (task, cwmpRequest, cwmpResponse) ->
+this.getParameterValues = (task, methodResponse, cwmpResponse) ->
   if not task.currentIndex?
     task.currentIndex = 0
-  else if cwmpRequest.getParameterValuesResponse?
+  else if methodResponse.parameterList?
     task.currentIndex = task.nextIndex
 
   task.nextIndex = Math.min(task.currentIndex + BATCH_SIZE, task.parameterNames.length)
   names = task.parameterNames.slice(task.currentIndex, task.nextIndex)
 
   if names.length > 0
-    cwmpResponse.getParameterValues = names
+    cwmpResponse.methodRequest = {
+      type : 'GetParameterValues',
+      parameterNames : names
+    }
 
-  if cwmpRequest.getParameterValuesResponse
-    return {'parameterValues' : cwmpRequest.getParameterValuesResponse}
+  if methodResponse.type is 'GetParameterValuesResponse'
+    return {'parameterValues' : methodResponse.parameterList}
   return
 
-this.setParameterValues = (task, cwmpRequest, cwmpResponse) ->
+this.setParameterValues = (task, methodResponse, cwmpResponse) ->
   if not task.currentIndex?
     task.currentIndex = 0
-  else if cwmpRequest.setParameterValuesResponse?
+  else if methodResponse.type is 'SetParameterValuesResponse'
     prevValues = task.parameterValues.slice(task.currentIndex, task.nextIndex)
     task.currentIndex = task.nextIndex
 
@@ -54,15 +61,20 @@ this.setParameterValues = (task, cwmpRequest, cwmpResponse) ->
   values = task.parameterValues.slice(task.currentIndex, task.nextIndex)
 
   if values.length > 0
-    cwmpResponse.setParameterValues = values
+    cwmpResponse.methodRequest = {
+      type : 'SetParameterValues',
+      parameterList : values
+    }
 
   if prevValues?
     return {'parameterValues' : prevValues}
   return
 
-this.reboot = (task, cwmpRequest, cwmpResponse) ->
-  if not cwmpRequest.reboot
-    cwmpResponse.reboot = 'reboot'
+this.reboot = (task, methodResponse, cwmpResponse) ->
+  if methodResponse.type isnt 'RebootResponse'
+    cwmpResponse.methodRequest = {
+      type : 'Reboot'
+    }
   
-exports.task = (task, cwmpRequest, cwmpResponse) ->
-  return this[task.name](task, cwmpRequest, cwmpResponse)
+exports.task = (task, methodResponse, cwmpResponse) ->
+  return this[task.name](task, methodResponse, cwmpResponse)

tr-069.coffee

@@ -10,16 +10,13 @@ NAMESPACES = {
   'cwmp' : 'urn:dslforum-org:cwmp-1-0',
 }
 
-trim = (str) ->
-  str.replace /^\s+|\s+$/g, ''
-
 
 cookiesToObj = (cookieLine) ->
   cookies = {}
-  for c in trim(cookieLine).split ','
+  for c in cookieLine.trim().split ','
     nv = c.split '='
     continue if nv.length < 2
-    cookies[trim(nv[0])] = trim(nv[1])
+    cookies[nv[0].trim()] = nv[1].trim()
   return cookies
 
 
@@ -30,108 +27,105 @@ cookiesToStr = (obj) ->
   return l# + 'path=/'
 
 
-sessionId = (xml) ->
-  e = xml.get('//soap-env:Envelope/soap-env:Header/cwmp:ID', NAMESPACES)
-  if e?
-    return trim(e.text())
-  return undefined
+event = (xml) ->
+  e.text().trim() for e in xml.find('EventStruct/EventCode', NAMESPACES)
 
 
-deviceId = (xml) ->
-  e = xml.get('//soap-env:Envelope/soap-env:Body/cwmp:Inform/DeviceId', NAMESPACES)
-  if e?
-    id = {}
-    for n in e.find('//child::*')
-      id[n.name()] = trim(n.text())
-    return id
-  return undefined
-
-
-eventCodes = (xml) ->
-  (trim(e.text()) for e in xml.find('//soap-env:Envelope/soap-env:Body/cwmp:Inform/Event/EventStruct/EventCode', NAMESPACES))
-
-
-retryCount = (xml) ->
-  e = xml.get('//soap-env:Envelope/soap-env:Body/cwmp:Inform/RetryCount', NAMESPACES)
-  if e
-    return JSON.parse(e.text())
-  return undefined
-
-
-informParameterValues = (xml) ->
-  if not xml.get( '//soap-env:Envelope/soap-env:Body/cwmp:Inform/ParameterList', NAMESPACES)
-    return undefined
-
-  values = []
-  for e in xml.find('//soap-env:Envelope/soap-env:Body/cwmp:Inform/ParameterList/ParameterValueStruct', NAMESPACES)
-    valueType = trim(e.get('Value').attr('type').value())
-    name = trim(e.get('Name').text())
-    switch valueType
-      when 'xsd:boolean'
-        value = Boolean(JSON.parse(e.get('Value').text()))
-      when 'xsd:unsignedInt'
-        value = JSON.parse(e.get('Value').text())
-      else
-        value = trim(e.get('Value').text())
-
-    values.push([name, value])
-  return values
-
-
-getParameterNamesResponse = (xml) ->
-  if not xml.get('//soap-env:Envelope/soap-env:Body/cwmp:GetParameterNamesResponse', NAMESPACES)
-    return undefined
-
-  response = []
-  for e in xml.find('//soap-env:Envelope/soap-env:Body/cwmp:GetParameterNamesResponse/ParameterList/ParameterInfoStruct', NAMESPACES)
-    name = trim(e.get('Name').text())
+parameterInfoList = (xml) ->
+  infoList = []
+  for e in xml.find('ParameterInfoStruct', NAMESPACES)
+    name = e.get('Name').text().trim()
     writable = Boolean(JSON.parse(e.get('Writable').text()))
-    response.push([name, writable])
-  return response
+    infoList.push([name, writable])
+  return infoList
 
 
-getParameterValuesResponse = (xml) ->
-  if not xml.get( '//soap-env:Envelope/soap-env:Body/cwmp:GetParameterValuesResponse', NAMESPACES)
-    return undefined
-
-  values = []
-  for e in xml.find('//soap-env:Envelope/soap-env:Body/cwmp:GetParameterValuesResponse/ParameterList/ParameterValueStruct', NAMESPACES)
-    valueType = trim(e.get('Value').attr('type').value())
-    name = trim(e.get('Name').text())
+parameterValueList = (xml) ->
+  valueList = []
+  for e in xml.find('ParameterValueStruct', NAMESPACES)
+    valueType = e.get('Value').attr('type').value().trim()
+    name = e.get('Name').text().trim()
+    value = e.get('Value').text().trim()
     switch valueType
       when 'xsd:boolean'
-        value = Boolean(JSON.parse(e.get('Value').text()))
+        value = Boolean(JSON.parse(value))
       when 'xsd:unsignedInt'
-        value = JSON.parse(e.get('Value').text())
+        value = JSON.parse(value)
+    valueList.push([name, value])
+  return valueList
+
+
+cpeGetParameterNames = (xml, methodRequest) ->
+  el = xml.node('cwmp:GetParameterNames')
+  el.node('cwmp:ParameterPath').text(methodRequest.parameterPath)
+  el.node('cwmp:NextLevel').text(+methodRequest.nextLevel)
+
+
+cpeGetParameterNamesResponse = (xml) ->
+  {parameterList : parameterInfoList(xml.get('ParameterList'))}
+
+
+cpeGetParameterValues = (xml, methodRequest) ->
+  el = xml.node('cwmp:GetParameterValues').node('cwmp:ParameterNames')
+  for p in methodRequest.parameterNames
+    el.node('xsd:string').text(p)
+
+
+cpeGetParameterValuesResponse = (xml) ->
+  {parameterList : parameterValueList(xml.get('ParameterList'))}
+
+
+cpeSetParameterValues = (xml, methodRequest) ->
+  el = xml.node('cwmp:SetParameterValues')
+  paramList = el.node('ParameterList')
+  for i in methodRequest.parameterList
+    pvs = paramList.node('ParameterValueStruct')
+    pvs.node('Name').text(i[0])
+    pvs.node('Value').text(i[1])
+  # Huawei CPEs need this element present otherwise won't respond
+  el.node('ParameterKey').text(if methodRequest.parameterKey? then methodRequest.parameterKey else '')
+
+
+cpeSetParameterValuesResponse = (xml) ->
+  {status : JSON.parse(xml.get('Status').text())}
+
+
+traverseXml = (xml) ->
+  obj = {}
+  for n in xml.childNodes()
+    if n.type() == 'element'
+      obj[n.name()] = traverseXml(n)
+
+  if Object.keys(obj).length == 0
+    xml.text()
   else
-        value = trim(e.get('Value').text())
-
-    values.push([name, value])
-  return values
-
-
-setParameterValuesResponse = (xml) ->
-  e = xml.get('//soap-env:Envelope/soap-env:Body/cwmp:SetParameterValuesResponse/Status', NAMESPACES)
-  if e
-    return JSON.parse(e.text())
-  return undefined
+    obj
 
 fault = (xml) ->
-  f = xml.get('//soap-env:Envelope/soap-env:Body/soap-env:Fault', NAMESPACES)
-  if f
-    traverse = (el) ->
-      children = el.childNodes()
-      obj = {}
-      for n in el.childNodes()
-        if n.type() == 'element'
-          obj[n.name()] = traverse(n)
-      if Object.keys(obj).length == 0
-        return el.text()
-      else
-        return obj
+  return traverseXml(xml)
 
-    return traverse(f)
-  return undefined
+
+acsInform = (xml) ->
+  {
+    parameterList : parameterValueList(xml.get('ParameterList')),
+    deviceId : traverseXml(xml.get('DeviceId')),
+    event : event(xml.get('Event')),
+    retryCount : JSON.parse(xml.get('RetryCount').text())
+  }
+
+
+acsInformResponse = (xml) ->
+  xml.node('cwmp:InformResponse').node('MaxEnvelopes').text(1)
+
+
+cpeReboot = (xml, methodRequest) ->
+  el = xml.node('cwmp:Reboot')
+  # Huawei CPEs need this element present otherwise won't respond
+  el.node('CommandKey').text(if methodRequest.commandKey then methodRequest.commandKey else '')
+
+
+cpeRebootResponse = (xml) ->
+  {}
 
 
 exports.request = (httpRequest) ->
@@ -147,21 +141,36 @@ exports.request = (httpRequest) ->
       # some devices send invalid utf8 characters
       xml = libxmljs.parseXml httpRequest.getBody('binary')
 
-    cwmpRequest.sessionId = sessionId xml
-    cwmpRequest.inform = true if xml.get('//soap-env:Envelope/soap-env:Body/cwmp:Inform', NAMESPACES)
-    cwmpRequest.informParameterValues = informParameterValues xml
-    cwmpRequest.reboot = true if xml.get('//soap-env:Envelope/soap-env:Body/cwmp:RebootResponse', NAMESPACES)
-    cwmpRequest.deviceId = deviceId xml
-    cwmpRequest.eventCodes = eventCodes xml
-    cwmpRequest.retryCount = retryCount xml
-    cwmpRequest.getParameterNamesResponse = getParameterNamesResponse xml
-    cwmpRequest.getParameterValuesResponse = getParameterValuesResponse xml
-    cwmpRequest.setParameterValuesResponse = setParameterValuesResponse xml
-    cwmpRequest.fault = fault xml
+    cwmpRequest.id = xml.get('//soap-env:Envelope/soap-env:Header/cwmp:ID', NAMESPACES).text()
+
+    methodElement = xml.get('/soap-env:Envelope/soap-env:Body/cwmp:*', NAMESPACES)
+    if methodElement?
+      switch methodElement.name()
+        when 'Inform'
+          cwmpRequest.methodRequest = acsInform(methodElement)
+          cwmpRequest.methodRequest.type = 'Inform'
+        when 'GetParameterNamesResponse'
+          cwmpRequest.methodResponse = cpeGetParameterNamesResponse(methodElement)
+          cwmpRequest.methodResponse.type = 'GetParameterNamesResponse'
+        when 'GetParameterValuesResponse'
+          cwmpRequest.methodResponse = cpeGetParameterValuesResponse(methodElement)
+          cwmpRequest.methodResponse.type = 'GetParameterValuesResponse'
+        when 'SetParameterValuesResponse'
+          cwmpRequest.methodResponse = cpeSetParameterValuesResponse(methodElement)
+          cwmpRequest.methodResponse.type = 'SetParameterValuesResponse'
+        when 'RebootResponse'
+          cwmpRequest.methodResponse = cpeRebootResponse(methodElement)
+          cwmpRequest.methodResponse.type = 'RebootResponse'
+        else
+          throw Error('8000 Method not supported')
+    else
+      faultElement = xml.get('/soap-env:Envelope/soap-env:Body/soap-env:Fault', NAMESPACES)
+      cwmpRequest.fault = fault(faultElement)
+    
   return cwmpRequest
 
 
-exports.response = (sessionId, cwmpResponse, cookies = null) ->
+exports.response = (id, cwmpResponse, cookies = null) ->
   headers = {
     'Content-Type' : 'text/xml; charset="utf-8"',
     'Server' : SERVER_NAME,
@@ -183,35 +192,29 @@ exports.response = (sessionId, cwmpResponse, cookies = null) ->
     env.defineNamespace prefix, url
 
   header = env.node('soap-env:Header')
-  header.node('cwmp:ID').attr({'soap-env:mustUnderstand' : 1}).text(sessionId)
-  #header.node('cwmp:NoMoreRequests').text(0) # depracated
+  header.node('cwmp:ID').attr({'soap-env:mustUnderstand' : 1}).text(id)
   body = env.node('soap-env:Body')
 
-  if cwmpResponse.inform
-    body.node('cwmp:InformResponse').node('MaxEnvelopes').text(1)
-
-  if cwmpResponse.getParameterNames?
-    getParameterNames = body.node('cwmp:GetParameterNames')
-    getParameterNames.node('cwmp:ParameterPath').text(cwmpResponse.getParameterNames[0])
-    getParameterNames.node('cwmp:NextLevel').text(+cwmpResponse.getParameterNames[1])
-
-  if cwmpResponse.getParameterValues?
-    parameterNames = body.node('cwmp:GetParameterValues').node('cwmp:ParameterNames')
-    for p in cwmpResponse.getParameterValues
-      parameterNames.node('xsd:string').text(p)
-
-  if cwmpResponse.setParameterValues?
-    setParameterValuesNode = body.node('cwmp:SetParameterValues')
-    parameterList = setParameterValuesNode.node('ParameterList')
-    for i in cwmpResponse.setParameterValues
-      pvs = parameterList.node('ParameterValueStruct')
-      pvs.node('Name').text(i[0])
-      pvs.node('Value').text(i[1])
-    setParameterValuesNode.node('ParameterKey')
-
-  if cwmpResponse.reboot?
-    body.node('cwmp:Reboot').node('CommandKey').text(cwmpResponse.reboot)
-
+  if cwmpResponse.methodResponse?
+    switch cwmpResponse.methodResponse.type
+      when 'InformResponse'
+        acsInformResponse(body)
+      else
+        throw Error("Unknown method response type #{cwmpResponse.methodResponse.type}")
+  else if cwmpResponse.methodRequest?
+    switch cwmpResponse.methodRequest.type
+      when 'GetParameterNames'
+        cpeGetParameterNames(body, cwmpResponse.methodRequest)
+      when 'GetParameterValues'
+        cpeGetParameterValues(body, cwmpResponse.methodRequest)
+      when 'SetParameterValues'
+        cpeSetParameterValues(body, cwmpResponse.methodRequest)
+      when 'Reboot'
+        cpeReboot(body, cwmpResponse.methodRequest)
+      else
+        throw Error("Unknown method request #{cwmpResponse.methodRequest.type}")
+  else
+    throw Error('Invalid response arguments')
   
   data = xml.toString()
   headers['Content-Length'] = data.length