Implement Revolut refresh token retrieval
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@ -5,6 +5,9 @@ from twisted.logger import Logger
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from json import dumps
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from json.decoder import JSONDecodeError
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import requests
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from cryptography.hazmat.primitives import serialization
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from cryptography.hazmat.backends import default_backend
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import jwt
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# Project imports
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from settings import settings
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@ -15,9 +18,59 @@ class Revolut(object):
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Class to handle Revolut API calls.
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"""
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def __init__(self):
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def __init__(self, irc):
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self.log = Logger("revolut")
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self.token = None
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self.irc = irc
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def setup_auth(self):
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self.create_new_jwt()
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self.get_access_token()
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def create_new_jwt(self):
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payload = {
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"iss": settings.Revolut.Domain,
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"sub": settings.Revolut.ClientID,
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"aud": "https://revolut.com",
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"exp": int(settings.Revolut.Expiry),
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}
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with open(settings.Revolut.PrivateKey, "rb") as f:
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pem_bytes = f.read()
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# payload = {jwt_header, jwt_body}
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private_key = serialization.load_pem_private_key(pem_bytes, password=None, backend=default_backend())
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encoded = jwt.encode(payload, private_key, algorithm="RS256")
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settings.Revolut.JWT = encoded
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settings.write()
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def get_access_token(self):
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headers = {"Content-Type": "application/x-www-form-urlencoded"}
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data = {
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"grant_type": "authorization_code",
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"code": settings.Revolut.AuthCode,
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"client_id": settings.Revolut.ClientID,
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"client_assertion_type": "urn:ietf:params:oauth:client-assertion-type:jwt-bearer",
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"client_assertion": settings.Revolut.JWT,
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}
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r = requests.post(f"{settings.Revolut.Base}/auth/token", data=data, headers=headers)
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try:
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parsed = r.json()
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except JSONDecodeError:
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return False
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if r.status_code == 200:
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try:
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settings.Revolut.RefreshToken = parsed["refresh_token"]
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settings.Revolut.SetupToken = "0"
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settings.write()
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self.log.info("Refreshed refresh token: {refresh_token}", refresh_token=settings.Revolut.RefreshToken)
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self.token = parsed["access_token"]
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self.log.info("Refreshed access token: {access_token}", access_token=self.token)
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except KeyError:
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self.log.error(f"Token authorization didn't contain refresh or access token: {parsed}", parsed=parsed)
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return False
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else:
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self.log.error(f"Cannot refresh token: {parsed}", parsed=parsed)
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return False
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def get_new_token(self):
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headers = {"Content-Type": "application/x-www-form-urlencoded"}
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@ -36,9 +89,8 @@ class Revolut(object):
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if r.status_code == 200:
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if "access_token" in parsed.keys():
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self.token = parsed["access_token"]
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if len(self.token) == len(settings.Revolut.RefreshToken):
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self.log.info("Refreshed access token: {access_token}", access_token=self.token)
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return True
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self.log.info("Refreshed access token: {access_token}", access_token=self.token)
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return True
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else:
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self.log.error(f"Token refresh didn't contain access token: {parsed}", parsed=parsed)
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return False
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