#!/usr/bin/python3 from base64 import b64decode from datetime import datetime, timedelta from dbus.mainloop.glib import DBusGMainLoop from importlib import util import json import logging import os import requests import socket import subprocess import sys from threading import Thread, Event import time import urllib3 from odoo import http, tools from odoo.http import send_file from odoo.modules.module import get_resource_path from odoo.addons.hw_drivers.tools import helpers _logger = logging.getLogger(__name__) #---------------------------------------------------------- # Controllers #---------------------------------------------------------- class StatusController(http.Controller): @http.route('/hw_drivers/action', type='json', auth='none', cors='*', csrf=False, save_session=False) def action(self, session_id, device_id, data): """ This route is called when we want to make a action with device (take picture, printing,...) We specify in data from which session_id that action is called And call the action of specific device """ iot_device = iot_devices.get(device_id) if iot_device: iot_device.data['owner'] = session_id data = json.loads(data) iot_device.action(data) return True return False @http.route('/hw_drivers/check_certificate', type='http', auth='none', cors='*', csrf=False, save_session=False) def check_certificate(self): """ This route is called when we want to check if certificate is up-to-date Used in cron.daily """ helpers.check_certificate() @http.route('/hw_drivers/event', type='json', auth='none', cors='*', csrf=False, save_session=False) def event(self, listener): """ listener is a dict in witch there are a sessions_id and a dict of device_id to listen """ req = event_manager.add_request(listener) if req['event'].wait(50): req['event'].clear() req['result']['session_id'] = req['session_id'] return req['result'] @http.route('/hw_drivers/box/connect', type='http', auth='none', cors='*', csrf=False, save_session=False) def connect_box(self, token): """ This route is called when we want that a IoT Box will be connected to a Odoo DB token is a base 64 encoded string and have 2 argument separate by | 1 - url of odoo DB 2 - token. This token will be compared to the token of Odoo. He have 1 hour lifetime """ server = helpers.get_odoo_server_url() image = get_resource_path('hw_drivers', 'static/img', 'False.jpg') if not server: credential = b64decode(token).decode('utf-8').split('|') url = credential[0] token = credential[1] if len(credential) > 2: # IoT Box send token with db_uuid and enterprise_code only since V13 db_uuid = credential[2] enterprise_code = credential[3] helpers.add_credential(db_uuid, enterprise_code) try: subprocess.check_call([get_resource_path('point_of_sale', 'tools/posbox/configuration/connect_to_server.sh'), url, '', token, 'noreboot']) m.send_alldevices() image = get_resource_path('hw_drivers', 'static/img', 'True.jpg') helpers.odoo_restart(3) except subprocess.CalledProcessError as e: _logger.error('A error encountered : %s ' % e.output) if os.path.isfile(image): with open(image, 'rb') as f: return f.read() @http.route('/hw_drivers/download_logs', type='http', auth='none', cors='*', csrf=False, save_session=False) def download_logs(self): """ Downloads the log file """ if tools.config['logfile']: res = send_file(tools.config['logfile'], mimetype="text/plain", as_attachment=True) res.headers['Cache-Control'] = 'no-cache' return res #---------------------------------------------------------- # Log Exceptions #---------------------------------------------------------- class ExceptionLogger: """ Redirect Exceptions to the logger to keep track of them in the log file. """ def __init__(self): self.logger = logging.getLogger() def write(self, message): if message != '\n': self.logger.error(message) def flush(self): pass sys.stderr = ExceptionLogger() #---------------------------------------------------------- # Drivers #---------------------------------------------------------- drivers = [] interfaces = {} iot_devices = {} class InterfaceMetaClass(type): def __new__(cls, clsname, bases, attrs): if clsname in interfaces: return interfaces[clsname] new_interface = super(InterfaceMetaClass, cls).__new__(cls, clsname, bases, attrs) interfaces[clsname] = new_interface return new_interface class Interface(Thread, metaclass=InterfaceMetaClass): _loop_delay = 3 # Delay (in seconds) between calls to get_devices or 0 if it should be called only once _detected_devices = {} connection_type = '' def __init__(self): super(Interface, self).__init__() self.drivers = sorted([d for d in drivers if d.connection_type == self.connection_type], key=lambda d: d.priority, reverse=True) def run(self): while self.connection_type and self.drivers: self.update_iot_devices(self.get_devices()) if not self._loop_delay: break time.sleep(self._loop_delay) def update_iot_devices(self, devices={}): added = devices.keys() - self._detected_devices removed = self._detected_devices - devices.keys() self._detected_devices = devices.keys() for path in removed: if path in iot_devices: iot_devices[path].disconnect() _logger.info('Device %s is now disconnected', path) for path in added: for driver in self.drivers: if driver.supported(device=devices[path]): _logger.info('Device %s is now connected', path) d = driver(device=devices[path]) d.daemon = True d.start() iot_devices[path] = d break def get_devices(self): raise NotImplementedError() class DriverMetaClass(type): def __new__(cls, clsname, bases, attrs): newclass = super(DriverMetaClass, cls).__new__(cls, clsname, bases, attrs) if hasattr(newclass, 'priority'): newclass.priority += 1 else: newclass.priority = 0 drivers.append(newclass) return newclass class Driver(Thread, metaclass=DriverMetaClass): """ Hook to register the driver into the drivers list """ connection_type = "" def __init__(self, device): super(Driver, self).__init__() self.dev = device self.data = {'value': ''} self._device_manufacturer = '' @property def device_name(self): return self._device_name @property def device_identifier(self): return self.dev.identifier @property def device_manufacturer(self): return self._device_manufacturer @property def device_connection(self): """ On specific driver override this method to give connection type of device return string possible value : direct - network - bluetooth - serial - hdmi """ return self._device_connection @property def device_type(self): """ On specific driver override this method to give type of device return string possible value : printer - camera - keyboard - scanner - display - device """ return self._device_type @classmethod def supported(cls, device): """ On specific driver override this method to check if device is supported or not return True or False """ pass def get_message(self): return '' def action(self, data): """ On specific driver override this method to make a action with device (take picture, printing,...) """ raise NotImplementedError() def disconnect(self): del iot_devices[self.device_identifier] #---------------------------------------------------------- # Device manager #---------------------------------------------------------- class EventManager(object): def __init__(self): self.sessions = {} def _delete_expired_sessions(self, max_time=70): ''' Clears sessions that are no longer called. :param max_time: time a session can stay unused before being deleted ''' now = time.time() expired_sessions = [session for session in self.sessions if now - self.sessions[session]['time_request'] > max_time] for session in expired_sessions: del self.sessions[session] def add_request(self, listener): self.session = { 'session_id': listener['session_id'], 'devices': listener['devices'], 'event': Event(), 'result': {}, 'time_request': time.time(), } self._delete_expired_sessions() self.sessions[listener['session_id']] = self.session return self.sessions[listener['session_id']] def device_changed(self, device): for session in self.sessions: if device.device_identifier in self.sessions[session]['devices']: self.sessions[session]['result'] = device.data self.sessions[session]['result']['device_id'] = device.device_identifier self.sessions[session]['event'].set() event_manager = EventManager() #---------------------------------------------------------- # ConnectionManager #---------------------------------------------------------- class ConnectionManager(Thread): def __init__(self): super(ConnectionManager, self).__init__() self.pairing_code = False self.pairing_uuid = False def run(self): if not helpers.get_odoo_server_url(): end_time = datetime.now() + timedelta(minutes=5) while (datetime.now() < end_time): self._connect_box() time.sleep(10) self.pairing_code = False self.pairing_uuid = False self._refresh_displays() def _connect_box(self): data = { 'jsonrpc': 2.0, 'params': { 'pairing_code': self.pairing_code, 'pairing_uuid': self.pairing_uuid, } } urllib3.disable_warnings() req = requests.post('https://iot-proxy.odoo.com/odoo-enterprise/iot/connect-box', json=data, verify=False) result = req.json().get('result', {}) if all(key in result for key in ['pairing_code', 'pairing_uuid']): self.pairing_code = result['pairing_code'] self.pairing_uuid = result['pairing_uuid'] elif all(key in result for key in ['url', 'token', 'db_uuid', 'enterprise_code']): self._connect_to_server(result['url'], result['token'], result['db_uuid'], result['enterprise_code']) def _connect_to_server(self, url, token, db_uuid, enterprise_code): if db_uuid and enterprise_code: helpers.add_credential(db_uuid, enterprise_code) # Save DB URL and token subprocess.check_call([get_resource_path('point_of_sale', 'tools/posbox/configuration/connect_to_server.sh'), url, '', token, 'noreboot']) # Notify the DB, so that the kanban view already shows the IoT Box m.send_alldevices() # Restart to checkout the git branch, get a certificate, load the IoT handlers... subprocess.check_call(["sudo", "service", "odoo", "restart"]) def _refresh_displays(self): """Refresh all displays to hide the pairing code""" for d in iot_devices: if iot_devices[d].device_type == 'display': iot_devices[d].action({ 'action': 'display_refresh' }) #---------------------------------------------------------- # Manager #---------------------------------------------------------- class Manager(Thread): def load_iot_handlers(self): """ This method loads local files: 'odoo/addons/hw_drivers/iot_handlers/drivers' and 'odoo/addons/hw_drivers/iot_handlers/interfaces' And execute these python drivers and interfaces """ helpers.download_iot_handlers() for directory in ['interfaces', 'drivers']: path = get_resource_path('hw_drivers', 'iot_handlers', directory) filesList = os.listdir(path) for file in filesList: path_file = os.path.join(path, file) spec = util.spec_from_file_location(file, path_file) if spec: module = util.module_from_spec(spec) spec.loader.exec_module(module) http.addons_manifest = {} http.root = http.Root() def send_alldevices(self): """ This method send IoT Box and devices informations to Odoo database """ server = helpers.get_odoo_server_url() if server: subject = helpers.read_file_first_line('odoo-subject.conf') if subject: domain = helpers.get_ip().replace('.', '-') + subject.strip('*') else: domain = helpers.get_ip() iot_box = { 'name': socket.gethostname(), 'identifier': helpers.get_mac_address(), 'ip': domain, 'token': helpers.get_token(), 'version': helpers.get_version() } devices_list = {} for device in iot_devices: identifier = iot_devices[device].device_identifier devices_list[identifier] = { 'name': iot_devices[device].device_name, 'type': iot_devices[device].device_type, 'manufacturer': iot_devices[device].device_manufacturer, 'connection': iot_devices[device].device_connection, } data = { 'params': { 'iot_box' : iot_box, 'devices' : devices_list, } } # disable certifiacte verification urllib3.disable_warnings() http = urllib3.PoolManager(cert_reqs='CERT_NONE') try: http.request( 'POST', server + "/iot/setup", body = json.dumps(data).encode('utf8'), headers = {'Content-type': 'application/json', 'Accept': 'text/plain'} ) except Exception as e: _logger.error('Could not reach configured server') _logger.error('A error encountered : %s ' % e) else: _logger.warning('Odoo server not set') def run(self): """ Thread that will check connected/disconnected device, load drivers if needed and contact the odoo server with the updates """ helpers.check_git_branch() helpers.check_certificate() self.send_alldevices() self.load_iot_handlers() self.previous_iot_devices = [] for interface in interfaces.values(): i = interface() i.daemon = True i.start() while 1: if iot_devices != self.previous_iot_devices: self.send_alldevices() self.previous_iot_devices = iot_devices.copy() time.sleep(3) # Must be started from main thread DBusGMainLoop(set_as_default=True) cm = ConnectionManager() cm.daemon = True cm.start() m = Manager() m.daemon = True m.start()