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' + 'This argument will be mandatory in a future version.', DeprecationWarning ) payload, _, _, _ = self._load(jwt) if options is None: options = {'verify_signature': verify} else: options.setdefault('verify_signature', verify) decoded = super(PyJWT, self).decode( jwt, key=key, algorithms=algorithms, options=options, **kwargs ) try: payload = json.loads(decoded.decode('utf-8')) except ValueError as e: raise DecodeError('Invalid payload string: %s' % e) if not isinstance(payload, Mapping): raise DecodeError('Invalid payload string: must be a json object') if verify: merged_options = merge_dict(self.options, options) self._validate_claims(payload, merged_options, **kwargs) return payload def _validate_claims(self, payload, options, audience=None, issuer=None, leeway=0, **kwargs): if 'verify_expiration' in kwargs: options['verify_exp'] = kwargs.get('verify_expiration', True) warnings.warn('The verify_expiration parameter is deprecated. ' 'Please use verify_exp in options instead.', DeprecationWarning) if isinstance(leeway, timedelta): leeway = leeway.total_seconds() if not isinstance(audience, (string_types, 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.get('verify_iat'): self._validate_iat(payload, now, leeway) if 'nbf' in payload and options.get('verify_nbf'): self._validate_nbf(payload, now, leeway) if 'exp' in payload and options.get('verify_exp'): self._validate_exp(payload, now, leeway) if options.get('verify_iss'): self._validate_iss(payload, issuer) if options.get('verify_aud'): self._validate_aud(payload, audience) def _validate_required_claims(self, payload, options): if options.get('require_exp') and payload.get('exp') is None: raise MissingRequiredClaimError('exp') if options.get('require_iat') and payload.get('iat') is None: raise MissingRequiredClaimError('iat') if options.get('require_nbf') and payload.get('nbf') is None: raise MissingRequiredClaimError('nbf') 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, string_types): audience_claims = [audience_claims] if not isinstance(audience_claims, list): raise InvalidAudienceError('Invalid claim format in token') if any(not isinstance(c, string_types) for c in audience_claims): raise InvalidAudienceError('Invalid claim format in token') if isinstance(audience, string_types): 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 = _jwt_global_obj.decode register_algorithm = _jwt_global_obj.register_algorithm unregister_algorithm = _jwt_global_obj.unregister_algorithm get_unverified_header = _jwt_global_obj.get_unverified_header