plugin.video.viervijfzes/resources/lib/viervijfzes/auth.py

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# -*- coding: utf-8 -*-
""" AUTH API """
from __future__ import absolute_import, division, unicode_literals
import json
import logging
import os
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import time
from resources.lib import kodiutils
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from resources.lib.viervijfzes.auth_awsidp import AwsIdp, InvalidLoginException, AuthenticationException
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_LOGGER = logging.getLogger('auth-api')
class AuthApi:
""" VIER/VIJF/ZES Authentication API """
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COGNITO_REGION = 'eu-west-1'
COGNITO_POOL_ID = 'eu-west-1_dViSsKM5Y'
COGNITO_CLIENT_ID = '6s1h851s8uplco5h6mqh1jac8m'
TOKEN_FILE = 'auth-tokens.json'
def __init__(self, username, password, token_path):
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""" Initialise object """
self._username = username
self._password = password
self._token_path = token_path
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self._id_token = None
self._expiry = 0
self._refresh_token = None
# Load tokens from cache
try:
with open(self._token_path + self.TOKEN_FILE, 'rb') as fdesc:
data_json = json.loads(fdesc.read())
self._id_token = data_json.get('id_token')
self._refresh_token = data_json.get('refresh_token')
self._expiry = int(data_json.get('expiry', 0))
except (IOError, TypeError, ValueError):
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_LOGGER.info('We could not use the cache since it is invalid or non-existent.')
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def get_token(self):
""" Get a valid token """
now = int(time.time())
if self._id_token and self._expiry > now:
# We have a valid id token in memory, use it
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_LOGGER.debug('Got an id token from memory')
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return self._id_token
if self._refresh_token:
# We have a valid refresh token, use that to refresh our id token
# The refresh token is valid for 30 days. If this refresh fails, we just continue by logging in again.
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_LOGGER.debug('Getting an id token by refreshing')
try:
self._id_token = self._refresh(self._refresh_token)
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self._expiry = now + 3600
except (InvalidLoginException, AuthenticationException) as exc:
_LOGGER.error('Error logging in: %s', str(exc))
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self._id_token = None
self._refresh_token = None
self._expiry = 0
# We continue by logging in with username and password
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if not self._id_token:
# We have no tokens, or they are all invalid, do a login
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_LOGGER.debug('Getting an id token by logging in')
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id_token, refresh_token = self._authenticate(self._username, self._password)
self._id_token = id_token
self._refresh_token = refresh_token
self._expiry = now + 3600
# Store new tokens in cache
if not os.path.exists(self._token_path):
os.mkdir(self._token_path)
with open(self._token_path + self.TOKEN_FILE, 'wb') as fdesc:
data = json.dumps(dict(
id_token=self._id_token,
refresh_token=self._refresh_token,
expiry=self._expiry,
))
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fdesc.write(kodiutils.from_unicode(data))
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return self._id_token
def clear_tokens(self):
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""" Remove the cached tokens. """
if os.path.exists(self._token_path + AuthApi.TOKEN_FILE):
os.unlink(self._token_path + AuthApi.TOKEN_FILE)
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@staticmethod
def _authenticate(username, password):
""" Authenticate with Amazon Cognito and fetch a refresh token and id token. """
client = AwsIdp(AuthApi.COGNITO_POOL_ID, AuthApi.COGNITO_CLIENT_ID)
return client.authenticate(username, password)
@staticmethod
def _refresh(refresh_token):
""" Use the refresh token to fetch a new id token. """
client = AwsIdp(AuthApi.COGNITO_POOL_ID, AuthApi.COGNITO_CLIENT_ID)
return client.renew_token(refresh_token)