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executable file 160 lines (140 sloc) 5.088 kB
#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Derek Carter<goozbach@friocorte.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# selinux module - change policy and state of SELinux
# usage:
#
# selinux policy=<SELINUX_POLICY> state=[enforcing|permissive|disabled] configfile=[SELINUX_CONFIG_FILE]
#
# configfile defaults to /etc/selinux/config
# policy files should be installed via the yum/apt modules
#
# bugs:
#
# Not tested on any debian based system
import os
import re
try:
import selinux
HAVE_SELINUX=True
except ImportError:
HAVE_SELINUX=False
# getter subroutines
def get_config_state(configfile):
myfile = open(configfile, "r")
lines = myfile.readlines()
myfile.close()
for line in lines:
stateline = re.match('^SELINUX=.*$', line)
if (stateline):
return(line.split('=')[1].strip())
def get_config_policy(configfile):
myfile = open(configfile, "r")
lines = myfile.readlines()
myfile.close()
for line in lines:
stateline = re.match('^SELINUXTYPE=.*$', line)
if (stateline):
return(line.split('=')[1].strip())
# setter subroutines
def set_config_state(state, configfile):
#SELINUX=permissive
# edit config file with state value
stateline='SELINUX=%s' % state
myfile = open(configfile, "r")
lines = myfile.readlines()
myfile.close()
myfile = open(configfile, "w")
for line in lines:
myfile.write(re.sub(r'^SELINUX=.*', stateline, line))
myfile.close()
def set_state(state):
if (state == 'enforcing'):
selinux.security_setenforce(1)
elif (state == 'permissive'):
selinux.security_setenforce(0)
elif (state == 'disabled'):
pass
else:
msg = 'trying to set invalid runtime state %s' % state
fail_json(msg=msg)
def set_config_policy(policy, configfile):
# edit config file with state value
#SELINUXTYPE=targeted
policyline='SELINUXTYPE=%s' % policy
myfile = open(configfile, "r")
lines = myfile.readlines()
myfile.close()
myfile = open(configfile, "w")
for line in lines:
myfile.write(re.sub(r'^SELINUXTYPE=.*', policyline, line))
myfile.close()
def main():
if (not HAVE_SELINUX):
fail_json(msg='python-selinux required for this module')
module = AnsibleModule(
argument_spec = dict(
policy=dict(required=True),
state=dict(choices=['enforcing', 'permissive', 'disabled'], required=True),
configfile=dict(aliases=['conf','file'], default='/etc/selinux/config')
)
)
# global vars
changed=False
msgs = []
configfile = module.params['configfile']
policy = module.params['policy']
state = module.params['state']
runtime_enabled = selinux.is_selinux_enabled()
runtime_policy = selinux.selinux_getpolicytype()[1]
runtime_state = 'disabled'
if (runtime_enabled):
# enabled means 'enforcing' or 'permissive'
if (selinux.security_getenforce()):
runtime_state = 'enforcing'
else:
runtime_state = 'permissive'
config_policy = get_config_policy(configfile)
config_state = get_config_state(configfile)
# check changed values and run changes
if (policy != runtime_policy):
# cannot change runtime policy
msgs.append('reboot to change the loaded policy')
changed=True
if (policy != config_policy):
msgs.append('config policy changed from \'%s\' to \'%s\'' % (config_policy, policy))
set_config_policy(policy, configfile)
changed=True
if (state != runtime_state):
if (state == 'disabled'):
msgs.append('disabled state will take effect next reboot')
else:
msgs.append('runtime state changed from \'%s\' to \'%s\'' % (runtime_state, state))
set_state(state)
changed=True
if (state != config_state):
msgs.append('config state changed from \'%s\' to \'%s\'' % (config_state, state))
set_config_state(state, configfile)
changed=True
module.exit_json(changed=changed, msg=', '.join(msgs),
configfile=configfile,
policy=policy, state=state)
#################################################
# include magic from lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
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