72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
""" Amazon Cognito Identity implementation without external dependencies """
|
||
|
|
|
||
|
|
from __future__ import absolute_import, division, unicode_literals
|
||
|
|
|
||
|
|
import json
|
||
|
|
import logging
|
||
|
|
|
||
|
|
import requests
|
||
|
|
|
||
|
|
_LOGGER = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
|
||
|
|
class CognitoIdentity:
|
||
|
|
""" Cognito Identity """
|
||
|
|
|
||
|
|
def __init__(self, pool_id, identity_pool_id):
|
||
|
|
"""
|
||
|
|
|
||
|
|
See https://docs.aws.amazon.com/cognitoidentity/latest/APIReference/Welcome.html.
|
||
|
|
|
||
|
|
:param str pool_id:
|
||
|
|
:param str identity_pool_id:
|
||
|
|
"""
|
||
|
|
self.pool_id = pool_id
|
||
|
|
if "_" not in self.pool_id:
|
||
|
|
raise ValueError("Invalid pool_id format. Should be <region>_<poolid>.")
|
||
|
|
|
||
|
|
self.identity_pool_id = identity_pool_id
|
||
|
|
self.region = self.pool_id.split("_")[0]
|
||
|
|
self.url = "https://cognito-identity.%s.amazonaws.com/" % self.region
|
||
|
|
self._session = requests.session()
|
||
|
|
|
||
|
|
def get_id(self, id_token):
|
||
|
|
""" Get the Identity ID based on the id_token. """
|
||
|
|
provider = 'cognito-idp.%s.amazonaws.com/%s' % (self.region, self.pool_id)
|
||
|
|
data = {
|
||
|
|
"IdentityPoolId": self.identity_pool_id,
|
||
|
|
"Logins": {
|
||
|
|
provider: id_token,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
response = self._session.post(self.url, json=data, headers={
|
||
|
|
'x-amz-target': 'AWSCognitoIdentityService.GetId',
|
||
|
|
'content-type': 'application/x-amz-json-1.1',
|
||
|
|
})
|
||
|
|
_LOGGER.debug(response.text)
|
||
|
|
|
||
|
|
result = json.loads(response.text)
|
||
|
|
|
||
|
|
return result.get('IdentityId')
|
||
|
|
|
||
|
|
def get_credentials_for_identity(self, id_token, identity_id):
|
||
|
|
""" Get credentials based on the id_token and identity_id. """
|
||
|
|
provider = 'cognito-idp.%s.amazonaws.com/%s' % (self.region, self.pool_id)
|
||
|
|
data = {
|
||
|
|
"IdentityId": identity_id,
|
||
|
|
"Logins": {
|
||
|
|
provider: id_token,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
response = self._session.post(self.url, json=data, headers={
|
||
|
|
'x-amz-target': 'AWSCognitoIdentityService.GetCredentialsForIdentity',
|
||
|
|
'content-type': 'application/x-amz-json-1.1',
|
||
|
|
})
|
||
|
|
_LOGGER.debug(response.text)
|
||
|
|
|
||
|
|
result = json.loads(response.text)
|
||
|
|
|
||
|
|
return result.get('Credentials')
|