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# Copyright 2017 Canonical Ltd.
# Licensed under the LGPLv3, see LICENCE file for details.
import macaroonbakery.bakery as bakery
import macaroonbakery._utils as utils
def discharge(ctx, content, key, locator, checker):
'''Handles a discharge request as received by the /discharge
endpoint.
@param ctx The context passed to the checker {checkers.AuthContext}
@param content URL and form parameters {dict}
@param locator Locator used to add third party caveats returned by
the checker {macaroonbakery.ThirdPartyLocator}
@param checker {macaroonbakery.ThirdPartyCaveatChecker} Used to check third
party caveats.
@return The discharge macaroon {macaroonbakery.Macaroon}
'''
id = content.get('id')
if id is not None:
id = id.encode('utf-8')
else:
id = content.get('id64')
if id is not None:
id = utils.b64decode(id)
caveat = content.get('caveat64')
if caveat is not None:
caveat = utils.b64decode(caveat)
return bakery.discharge(
ctx,
id=id,
caveat=caveat,
key=key,
checker=checker,
locator=locator,
)
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