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- from datetime import datetime
- from datetime import timedelta
- from datetime import timezone
- from typing import Iterable
- from typing import List
- from typing import Optional
- from typing import Sequence
- from typing import Type
- from typing import Union
- from flask import current_app
- from flask.json import JSONEncoder
- from jwt.algorithms import requires_cryptography
- from flask_jwt_extended.typing import ExpiresDelta
- class _Config(object):
- """
- Helper object for accessing and verifying options in this extension. This
- is meant for internal use of the application; modifying config options
- should be done with flasks ```app.config```.
- Default values for the configuration options are set in the jwt_manager
- object. All of these values are read only. This is simply a loose wrapper
- with some helper functionality for flasks `app.config`.
- """
- @property
- def is_asymmetric(self) -> bool:
- return self.algorithm in requires_cryptography
- @property
- def encode_key(self) -> str:
- return self._private_key if self.is_asymmetric else self._secret_key
- @property
- def decode_key(self) -> str:
- return self._public_key if self.is_asymmetric else self._secret_key
- @property
- def token_location(self) -> Sequence[str]:
- locations = current_app.config["JWT_TOKEN_LOCATION"]
- if isinstance(locations, str):
- locations = (locations,)
- elif not isinstance(locations, Iterable):
- raise RuntimeError("JWT_TOKEN_LOCATION must be a sequence or a set")
- elif not locations:
- raise RuntimeError(
- "JWT_TOKEN_LOCATION must contain at least one "
- 'of "headers", "cookies", "query_string", or "json"'
- )
- for location in locations:
- if location not in ("headers", "cookies", "query_string", "json"):
- raise RuntimeError(
- "JWT_TOKEN_LOCATION can only contain "
- '"headers", "cookies", "query_string", or "json"'
- )
- return locations
- @property
- def jwt_in_cookies(self) -> bool:
- return "cookies" in self.token_location
- @property
- def jwt_in_headers(self) -> bool:
- return "headers" in self.token_location
- @property
- def jwt_in_query_string(self) -> bool:
- return "query_string" in self.token_location
- @property
- def jwt_in_json(self) -> bool:
- return "json" in self.token_location
- @property
- def header_name(self) -> str:
- name = current_app.config["JWT_HEADER_NAME"]
- if not name:
- raise RuntimeError("JWT_ACCESS_HEADER_NAME cannot be empty")
- return name
- @property
- def header_type(self) -> str:
- return current_app.config["JWT_HEADER_TYPE"]
- @property
- def query_string_name(self) -> str:
- return current_app.config["JWT_QUERY_STRING_NAME"]
- @property
- def query_string_value_prefix(self) -> str:
- return current_app.config["JWT_QUERY_STRING_VALUE_PREFIX"]
- @property
- def access_cookie_name(self) -> str:
- return current_app.config["JWT_ACCESS_COOKIE_NAME"]
- @property
- def refresh_cookie_name(self) -> str:
- return current_app.config["JWT_REFRESH_COOKIE_NAME"]
- @property
- def access_cookie_path(self) -> str:
- return current_app.config["JWT_ACCESS_COOKIE_PATH"]
- @property
- def refresh_cookie_path(self) -> str:
- return current_app.config["JWT_REFRESH_COOKIE_PATH"]
- @property
- def cookie_secure(self) -> bool:
- return current_app.config["JWT_COOKIE_SECURE"]
- @property
- def cookie_domain(self) -> str:
- return current_app.config["JWT_COOKIE_DOMAIN"]
- @property
- def session_cookie(self) -> bool:
- return current_app.config["JWT_SESSION_COOKIE"]
- @property
- def cookie_samesite(self) -> str:
- return current_app.config["JWT_COOKIE_SAMESITE"]
- @property
- def json_key(self) -> str:
- return current_app.config["JWT_JSON_KEY"]
- @property
- def refresh_json_key(self) -> str:
- return current_app.config["JWT_REFRESH_JSON_KEY"]
- @property
- def csrf_protect(self) -> bool:
- return self.jwt_in_cookies and current_app.config["JWT_COOKIE_CSRF_PROTECT"]
- @property
- def csrf_request_methods(self) -> Iterable[str]:
- return current_app.config["JWT_CSRF_METHODS"]
- @property
- def csrf_in_cookies(self) -> bool:
- return current_app.config["JWT_CSRF_IN_COOKIES"]
- @property
- def access_csrf_cookie_name(self) -> str:
- return current_app.config["JWT_ACCESS_CSRF_COOKIE_NAME"]
- @property
- def refresh_csrf_cookie_name(self) -> str:
- return current_app.config["JWT_REFRESH_CSRF_COOKIE_NAME"]
- @property
- def access_csrf_cookie_path(self) -> str:
- return current_app.config["JWT_ACCESS_CSRF_COOKIE_PATH"]
- @property
- def refresh_csrf_cookie_path(self) -> str:
- return current_app.config["JWT_REFRESH_CSRF_COOKIE_PATH"]
- @property
- def access_csrf_header_name(self) -> str:
- return current_app.config["JWT_ACCESS_CSRF_HEADER_NAME"]
- @property
- def refresh_csrf_header_name(self) -> str:
- return current_app.config["JWT_REFRESH_CSRF_HEADER_NAME"]
- @property
- def csrf_check_form(self) -> bool:
- return current_app.config["JWT_CSRF_CHECK_FORM"]
- @property
- def access_csrf_field_name(self) -> str:
- return current_app.config["JWT_ACCESS_CSRF_FIELD_NAME"]
- @property
- def refresh_csrf_field_name(self) -> str:
- return current_app.config["JWT_REFRESH_CSRF_FIELD_NAME"]
- @property
- def access_expires(self) -> ExpiresDelta:
- delta = current_app.config["JWT_ACCESS_TOKEN_EXPIRES"]
- if type(delta) is int:
- delta = timedelta(seconds=delta)
- if delta is not False:
- try:
- # Basically runtime typechecking. Probably a better way to do
- # this with proper type checking
- delta + datetime.now(timezone.utc)
- except TypeError as e:
- err = (
- "must be able to add JWT_ACCESS_TOKEN_EXPIRES to datetime.datetime"
- )
- raise RuntimeError(err) from e
- return delta
- @property
- def refresh_expires(self) -> ExpiresDelta:
- delta = current_app.config["JWT_REFRESH_TOKEN_EXPIRES"]
- if type(delta) is int:
- delta = timedelta(seconds=delta)
- if delta is not False:
- # Basically runtime typechecking. Probably a better way to do
- # this with proper type checking
- try:
- delta + datetime.now(timezone.utc)
- except TypeError as e:
- err = (
- "must be able to add JWT_REFRESH_TOKEN_EXPIRES to datetime.datetime"
- )
- raise RuntimeError(err) from e
- return delta
- @property
- def algorithm(self) -> str:
- return current_app.config["JWT_ALGORITHM"]
- @property
- def decode_algorithms(self) -> List[str]:
- algorithms = current_app.config["JWT_DECODE_ALGORITHMS"]
- if not algorithms:
- return [self.algorithm]
- if self.algorithm not in algorithms:
- algorithms.append(self.algorithm)
- return algorithms
- @property
- def _secret_key(self) -> str:
- key = current_app.config["JWT_SECRET_KEY"]
- if not key:
- key = current_app.config.get("SECRET_KEY", None)
- if not key:
- raise RuntimeError(
- "JWT_SECRET_KEY or flask SECRET_KEY "
- "must be set when using symmetric "
- 'algorithm "{}"'.format(self.algorithm)
- )
- return key
- @property
- def _public_key(self) -> str:
- key = current_app.config["JWT_PUBLIC_KEY"]
- if not key:
- raise RuntimeError(
- "JWT_PUBLIC_KEY must be set to use "
- "asymmetric cryptography algorithm "
- '"{}"'.format(self.algorithm)
- )
- return key
- @property
- def _private_key(self) -> str:
- key = current_app.config["JWT_PRIVATE_KEY"]
- if not key:
- raise RuntimeError(
- "JWT_PRIVATE_KEY must be set to use "
- "asymmetric cryptography algorithm "
- '"{}"'.format(self.algorithm)
- )
- return key
- @property
- def cookie_max_age(self) -> Optional[int]:
- # Returns the appropiate value for max_age for flask set_cookies. If
- # session cookie is true, return None, otherwise return a number of
- # seconds 1 year in the future
- return None if self.session_cookie else 31540000 # 1 year
- @property
- def identity_claim_key(self) -> str:
- return current_app.config["JWT_IDENTITY_CLAIM"]
- @property
- def exempt_methods(self) -> Iterable[str]:
- return {"OPTIONS"}
- @property
- def error_msg_key(self) -> str:
- return current_app.config["JWT_ERROR_MESSAGE_KEY"]
- @property
- def json_encoder(self) -> Type[JSONEncoder]:
- return current_app.json_encoder
- @property
- def decode_audience(self) -> Union[str, Iterable[str]]:
- return current_app.config["JWT_DECODE_AUDIENCE"]
- @property
- def encode_audience(self) -> Union[str, Iterable[str]]:
- return current_app.config["JWT_ENCODE_AUDIENCE"]
- @property
- def encode_issuer(self) -> str:
- return current_app.config["JWT_ENCODE_ISSUER"]
- @property
- def decode_issuer(self) -> str:
- return current_app.config["JWT_DECODE_ISSUER"]
- @property
- def leeway(self) -> int:
- return current_app.config["JWT_DECODE_LEEWAY"]
- @property
- def encode_nbf(self) -> bool:
- return current_app.config["JWT_ENCODE_NBF"]
- config = _Config()
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