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# coding=utf-8
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2020 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENCE.TXT
#
from jwt import decode, exceptions
from clcommon.lib.consts import DEFAULT_JWT_ES_TOKEN_PATH
def read_jwt(jwt_path):
with open(jwt_path, mode='rb') as f:
token_string = f.read().strip()
return token_string
def decode_jwt(token_string, verify_exp=True):
jwt_token = decode(token_string, algorithms=['HS256'],
options={'require_exp': True, "verify_exp": verify_exp, "verify_iss": True,
'verify_signature': False},
issuer='CloudLinux')
if 'exp' not in jwt_token:
raise exceptions.MissingRequiredClaimError('exp')
return jwt_token
def jwt_token_check():
"""
JWT token check
:return: Tuple: success_flag, error_message, token_string
success_flag: True/False - OK, JWT is valid/Error, invalid
error_message: Error message
token_string: Token string
"""
success_flag, error_message, token_string = True, "OK", None
try:
token_string = read_jwt(DEFAULT_JWT_ES_TOKEN_PATH)
except (OSError, IOError):
return False, f"JWT file {DEFAULT_JWT_ES_TOKEN_PATH} read error", None
# JWT read success
try:
jwt_token = decode_jwt(token_string)
if jwt_token.get("cl_plus") is None:
success_flag, error_message, token_string = False, "JWT token format error", None
elif not jwt_token.get("cl_plus"):
success_flag, error_message, token_string = False, "JWT token doesn't have CL+ service", None
except exceptions.InvalidIssuerError:
success_flag, error_message, token_string = False, "JWT token issuer is invalid", None
except exceptions.ExpiredSignatureError:
success_flag, error_message, token_string = False, "JWT token expired", None
except exceptions.PyJWTError:
success_flag, error_message, token_string = False, "JWT token format error", None
return success_flag, error_message, token_string