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¯U òhsý­jóÔj#,ímŒRµ«lbïUTŒÑ8†Ä0œÏr`ð¡¬É Ї ë"À² ™ 6¥ f¶ ¢ÚoܱԷ-<Àî)†a¶ž'Ú»¨TXqØæ¶÷YÄHy˜9ÈIW­YÀuMFë ºÏ’AqÌ4·/Ú †ô'i$øä­=Ä Ý|öK×40è|È6p‘0§)o¥ctî§H+CA-“ xØ|ÐXŠç l8íºð3Ø:³¤¬KX¯UÿÙ from __future__ import unicode_literals import copy from base64 import standard_b64encode from pymacaroons.binders import HashSignaturesBinder from pymacaroons.serializers.binary_serializer import BinarySerializer from pymacaroons.exceptions import MacaroonInitException from pymacaroons.utils import ( convert_to_bytes, convert_to_string, create_initial_signature ) from pymacaroons.caveat_delegates import ( FirstPartyCaveatDelegate, ThirdPartyCaveatDelegate) MACAROON_V1 = 1 MACAROON_V2 = 2 class Macaroon(object): def __init__(self, location=None, identifier=None, key=None, caveats=None, signature=None, version=MACAROON_V1): if version > MACAROON_V2: version = MACAROON_V2 self._version = version self.caveats = caveats or [] self.location = location or '' self.identifier = identifier or '' self.signature = signature or '' self.first_party_caveat_delegate = FirstPartyCaveatDelegate() self.third_party_caveat_delegate = ThirdPartyCaveatDelegate() if key: self.signature = create_initial_signature( convert_to_bytes(key), self.identifier_bytes ) @classmethod def deserialize(cls, serialized, serializer=None): serializer = serializer or BinarySerializer() if serialized: return serializer.deserialize(serialized) else: raise MacaroonInitException( 'Must supply serialized macaroon.' ) @property def location(self): return convert_to_string(self._location) @location.setter def location(self, string_or_bytes): self._location = convert_to_bytes(string_or_bytes) @property def version(self): return self._version @property def identifier(self): if self.version == MACAROON_V1: return convert_to_string(self._identifier) return self._identifier @property def identifier_bytes(self): return self._identifier @identifier.setter def identifier(self, string_or_bytes): self._identifier = convert_to_bytes(string_or_bytes) @property def signature(self): return convert_to_string(self._signature) @signature.setter def signature(self, string_or_bytes): self._signature = convert_to_bytes(string_or_bytes) @property def signature_bytes(self): return self._signature def copy(self): return copy.deepcopy(self) def serialize(self, serializer=None): serializer = serializer or BinarySerializer() return serializer.serialize(self) def inspect(self): combined = 'location {loc}\n'.format(loc=self.location) try: combined += 'identifier {id}\n'.format(id=self.identifier) except UnicodeEncodeError: combined += 'identifier64 {id}\n'.format(id=convert_to_string( standard_b64encode(self.identifier_bytes) )) for caveat in self.caveats: try: combined += 'cid {cid}\n'.format( cid=convert_to_string(caveat.caveat_id)) except UnicodeEncodeError: combined += 'cid64 {cid}\n'.format(cid=convert_to_string( standard_b64encode(caveat.caveat_id_bytes) )) if caveat.verification_key_id and caveat.location: vid = convert_to_string( standard_b64encode(caveat.verification_key_id) ) combined += 'vid {vid}\n'.format(vid=vid) combined += 'cl {cl}\n'.format(cl=caveat.location) combined += 'signature {sig}'.format(sig=self.signature) return combined def first_party_caveats(self): return [caveat for caveat in self.caveats if caveat.first_party()] def third_party_caveats(self): return [caveat for caveat in self.caveats if caveat.third_party()] def prepare_for_request(self, discharge_macaroon): ''' Return a new discharge macaroon bound to the receiving macaroon's current signature so that it can be used in a request. This must be done before a discharge macaroon is sent to a server. :param discharge_macaroon: :return: bound discharge macaroon ''' protected = discharge_macaroon.copy() return HashSignaturesBinder(self).bind(protected) def add_first_party_caveat(self, predicate, **kwargs): return self.first_party_caveat_delegate.add_first_party_caveat( self, predicate, **kwargs ) def add_third_party_caveat(self, location, key, key_id, **kwargs): return self.third_party_caveat_delegate.add_third_party_caveat( self, location, key, key_id, **kwargs )