class AirPlayInternal(AirPlay):
"""Implementation of API for AirPlay support."""
def __init__(self, http, airplay_player):
"""Initialize a new AirPlayInternal instance."""
self.player = airplay_player
self.identifier = None
self.srp = SRPAuthHandler()
self.verifier = AuthenticationVerifier(http, self.srp)
self.auther = DeviceAuthenticator(http, self.srp)
@asyncio.coroutine
def generate_credentials(self):
"""Create new credentials for authentication.
Credentials that have been authenticated shall be saved and loaded with
load_credentials before playing anything. If credentials are lost,
authentication must be performed again.
"""
identifier, seed = new_credentials()
return '{0}:{1}'.format(identifier, seed.decode().upper())
@asyncio.coroutine
def load_credentials(self, credentials):
"""Load existing credentials."""
split = credentials.split(':')
self.identifier = split[0]
self.srp.initialize(binascii.unhexlify(split[1]))
_LOGGER.debug('Loaded AirPlay credentials: %s', credentials)
def verify_authenticated(self):
"""Check if loaded credentials are verified."""
return self.verifier.verify_authed()
def start_authentication(self):
"""Begin authentication proces (show PIN on screen)."""
return self.auther.start_authentication()
def finish_authentication(self, pin):
"""End authentication process with PIN code."""
return self.auther.finish_authentication(self.identifier, pin)
@asyncio.coroutine
def play_url(self, url, **kwargs):
"""Play media from an URL on the device.
Note: This method will not yield until the media has finished playing.
The Apple TV requires the request to stay open during the entire
play duration.
"""
# If credentials have been loaded, do device verification first
if self.identifier:
yield from self.verify_authenticated()
position = 0 if 'position' not in kwargs else int(kwargs['position'])
return (yield from self.player.play_url(url, position))
def test_auth_failed(self):
http = HttpSession(
self.session, 'http://127.0.0.1:{0}/'.format(self.app.port))
handler = srp.SRPAuthHandler()
handler.initialize(binascii.unhexlify(DEVICE_AUTH_KEY))
auther = DeviceAuthenticator(http, handler)
yield from auther.start_authentication()
self.assertTrue((yield from auther.finish_authentication(
DEVICE_IDENTIFIER, DEVICE_PIN)))
def test_auth_successful(self):
http = HttpSession(
self.session, 'http://127.0.0.1:{0}/'.format(self.app.port))
handler = srp.SRPAuthHandler()
handler.initialize(INVALID_AUTH_KEY)
auther = DeviceAuthenticator(http, handler)
yield from auther.start_authentication()
with self.assertRaises(DeviceAuthenticationError):
yield from auther.finish_authentication(
DEVICE_IDENTIFIER, DEVICE_PIN)
