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# Copyright 2014, Tresys Technology, LLC
#
# This file is part of SETools.
#
# SETools is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 2.1 of
# the License, or (at your option) any later version.
#
# SETools is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with SETools. If not, see
# <http://www.gnu.org/licenses/>.
#
from . import exception
from . import qpol
from . import symbol
from . import context
def initialsid_factory(policy, name):
"""Factory function for creating initial sid objects."""
if isinstance(name, InitialSID):
assert name.policy == policy
return name
elif isinstance(name, qpol.qpol_isid_t):
return InitialSID(policy, name)
try:
return InitialSID(policy, qpol.qpol_isid_t(policy, name))
except ValueError:
raise exception.InvalidInitialSid("{0} is not a valid initial sid".format(name))
class InitialSID(symbol.PolicySymbol):
"""An initial SID statement."""
@property
def context(self):
"""The context for this initial SID."""
return context.context_factory(self.policy, self.qpol_symbol.context(self.policy))
def statement(self):
return "sid {0} {0.context}".format(self)
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