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# Copyright (c) 2017-2018 by Ron Frederick <ronf@timeheart.net> and others.
#
# This program and the accompanying materials are made available under
# the terms of the Eclipse Public License v2.0 which accompanies this
# distribution and is available at:
#
# http://www.eclipse.org/legal/epl-2.0/
#
# This program may also be made available under the following secondary
# licenses when the conditions for such availability set forth in the
# Eclipse Public License v2.0 are satisfied:
#
# GNU General Public License, Version 2.0, or any later versions of
# that license
#
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
#
# Contributors:
# Ron Frederick - initial implementation, API, and documentation
"""Stub GSS module for unit tests"""
def step(host, token):
"""Perform next step in GSS authentication"""
complete = False
if token == b'errtok':
return token, complete
elif ((token is None and 'empty_init' in host) or
(token == b'1' and 'empty_continue' in host)):
return b'', complete
elif token == b'0':
if 'continue_token' in host:
token = b'continue'
else:
complete = True
token = b'extra' if 'extra_token' in host else None
elif token:
token = bytes((token[0]-1,))
else:
token = host[0].encode('ascii')
if token == b'0':
if 'step_error' in host:
return (b'errtok' if 'errtok' in host else b'error'), complete
complete = True
return token, complete
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