mirror of
https://github.com/SELinuxProject/setools
synced 2025-03-20 10:06:29 +00:00
67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
# Copyright 2015, Tresys Technology, LLC
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# Copyright 2018, Chris PeBenito <pebenito@ieee.org>
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#
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# This file is part of SETools.
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#
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# SETools is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# SETools is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with SETools. If not, see <http://www.gnu.org/licenses/>.
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#
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import os
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import subprocess
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import tempfile
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from setools import SELinuxPolicy
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def compile_policy(source_file, mls=True, xen=False):
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"""
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Compile the specified source policy. Checkpolicy is
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assumed to be /usr/bin/checkpolicy. Otherwise the path
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must be specified in the CHECKPOLICY environment variable.
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Return:
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A SELinuxPolicy object.
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"""
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# create a temp file for the binary policy
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# and then have checkpolicy overwrite it.
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fd, policy_path = tempfile.mkstemp()
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os.close(fd)
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try:
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command = [os.environ['CHECKPOLICY']]
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except KeyError:
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command = ["/usr/bin/checkpolicy"]
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if mls:
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command.append("-M")
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if xen:
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command.extend(["-t", "xen", "-c", "30"])
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command.extend(["-o", policy_path, "-U", "reject", source_file])
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with open(os.devnull, "w") as null:
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subprocess.check_call(command, stdout=null, shell=False, close_fds=True)
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try:
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policy = SELinuxPolicy(policy_path)
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except Exception:
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# This should never be hit, since this policy
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# successfully compiled with checkpolicy above.
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# If we do, clean up the binary policy since
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# tearDownClass() does not run.
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os.unlink(policy_path)
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raise
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return policy
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