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