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Direktori : /proc/self/root/proc/self/root/opt/alt/python37/lib/python3.7/site-packages/jwt/ |
Current File : //proc/self/root/proc/self/root/opt/alt/python37/lib/python3.7/site-packages/jwt/api_jwt.py |
import json from calendar import timegm from collections.abc import Iterable, Mapping from datetime import datetime, timedelta from typing import Any, Dict, List, Optional, Type, Union from . import api_jws from .exceptions import ( DecodeError, ExpiredSignatureError, ImmatureSignatureError, InvalidAudienceError, InvalidIssuedAtError, InvalidIssuerError, MissingRequiredClaimError, ) class PyJWT: def __init__(self, options=None): if options is None: options = {} self.options = {**self._get_default_options(), **options} @staticmethod def _get_default_options() -> Dict[str, Union[bool, List[str]]]: return { "verify_signature": True, "verify_exp": True, "verify_nbf": True, "verify_iat": True, "verify_aud": True, "verify_iss": True, "require": [], } def encode( self, payload: Dict[str, Any], key: str, algorithm: str = "HS256", headers: Optional[Dict] = None, json_encoder: Optional[Type[json.JSONEncoder]] = None, ) -> str: # Check that we get a mapping if not isinstance(payload, Mapping): raise TypeError( "Expecting a mapping object, as JWT only supports " "JSON objects as payloads." ) # Payload payload = payload.copy() for time_claim in ["exp", "iat", "nbf"]: # Convert datetime to a intDate value in known time-format claims if isinstance(payload.get(time_claim), datetime): payload[time_claim] = timegm(payload[time_claim].utctimetuple()) json_payload = json.dumps( payload, separators=(",", ":"), cls=json_encoder ).encode("utf-8") return api_jws.encode(json_payload, key, algorithm, headers, json_encoder) def decode_complete( self, jwt: str, key: str = "", algorithms: List[str] = None, options: Dict = None, **kwargs, ) -> Dict[str, Any]: if options is None: options = {"verify_signature": True} else: options.setdefault("verify_signature", True) if not options["verify_signature"]: options.setdefault("verify_exp", False) options.setdefault("verify_nbf", False) options.setdefault("verify_iat", False) options.setdefault("verify_aud", False) options.setdefault("verify_iss", False) if options["verify_signature"] and not algorithms: raise DecodeError( 'It is required that you pass in a value for the "algorithms" argument when calling decode().' ) decoded = api_jws.decode_complete( jwt, key=key, algorithms=algorithms, options=options, **kwargs, ) try: payload = json.loads(decoded["payload"]) except ValueError as e: raise DecodeError("Invalid payload string: %s" % e) if not isinstance(payload, dict): raise DecodeError("Invalid payload string: must be a json object") merged_options = {**self.options, **options} self._validate_claims(payload, merged_options, **kwargs) decoded["payload"] = payload return decoded def decode( self, jwt: str, key: str = "", algorithms: List[str] = None, options: Dict = None, **kwargs, ) -> Dict[str, Any]: decoded = self.decode_complete(jwt, key, algorithms, options, **kwargs) return decoded["payload"] def _validate_claims( self, payload, options, audience=None, issuer=None, leeway=0, **kwargs ): if isinstance(leeway, timedelta): leeway = leeway.total_seconds() if not isinstance(audience, (bytes, str, type(None), Iterable)): raise TypeError("audience must be a string, iterable, or None") self._validate_required_claims(payload, options) now = timegm(datetime.utcnow().utctimetuple()) if "iat" in payload and options["verify_iat"]: self._validate_iat(payload, now, leeway) if "nbf" in payload and options["verify_nbf"]: self._validate_nbf(payload, now, leeway) if "exp" in payload and options["verify_exp"]: self._validate_exp(payload, now, leeway) if options["verify_iss"]: self._validate_iss(payload, issuer) if options["verify_aud"]: self._validate_aud(payload, audience) def _validate_required_claims(self, payload, options): for claim in options["require"]: if payload.get(claim) is None: raise MissingRequiredClaimError(claim) def _validate_iat(self, payload, now, leeway): try: int(payload["iat"]) except ValueError: raise InvalidIssuedAtError("Issued At claim (iat) must be an integer.") def _validate_nbf(self, payload, now, leeway): try: nbf = int(payload["nbf"]) except ValueError: raise DecodeError("Not Before claim (nbf) must be an integer.") if nbf > (now + leeway): raise ImmatureSignatureError("The token is not yet valid (nbf)") def _validate_exp(self, payload, now, leeway): try: exp = int(payload["exp"]) except ValueError: raise DecodeError("Expiration Time claim (exp) must be an" " integer.") if exp < (now - leeway): raise ExpiredSignatureError("Signature has expired") def _validate_aud(self, payload, audience): if audience is None and "aud" not in payload: return if audience is not None and "aud" not in payload: # Application specified an audience, but it could not be # verified since the token does not contain a claim. raise MissingRequiredClaimError("aud") if audience is None and "aud" in payload: # Application did not specify an audience, but # the token has the 'aud' claim raise InvalidAudienceError("Invalid audience") audience_claims = payload["aud"] if isinstance(audience_claims, str): audience_claims = [audience_claims] if not isinstance(audience_claims, list): raise InvalidAudienceError("Invalid claim format in token") if any(not isinstance(c, str) for c in audience_claims): raise InvalidAudienceError("Invalid claim format in token") if isinstance(audience, str): audience = [audience] if not any(aud in audience_claims for aud in audience): raise InvalidAudienceError("Invalid audience") def _validate_iss(self, payload, issuer): if issuer is None: return if "iss" not in payload: raise MissingRequiredClaimError("iss") if payload["iss"] != issuer: raise InvalidIssuerError("Invalid issuer") _jwt_global_obj = PyJWT() encode = _jwt_global_obj.encode decode_complete = _jwt_global_obj.decode_complete decode = _jwt_global_obj.decode