mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-16 01:50:39 +00:00
265 lines
8.0 KiB
Python
265 lines
8.0 KiB
Python
#!/usr/bin/python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# (c) 2012, Derek Carter<goozbach@friocorte.com>
|
|
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
|
|
|
|
from __future__ import absolute_import, division, print_function
|
|
__metaclass__ = type
|
|
|
|
|
|
ANSIBLE_METADATA = {
|
|
'metadata_version': '1.1',
|
|
'status': ['stableinterface'],
|
|
'supported_by': 'core'
|
|
}
|
|
|
|
|
|
DOCUMENTATION = '''
|
|
---
|
|
module: selinux
|
|
short_description: Change policy and state of SELinux
|
|
description:
|
|
- Configures the SELinux mode and policy. A reboot may be required after usage. Ansible will not issue this reboot but will let you know when it is required.
|
|
version_added: "0.7"
|
|
options:
|
|
policy:
|
|
description:
|
|
- "name of the SELinux policy to use (example: C(targeted)) will be required if state is not C(disabled)"
|
|
state:
|
|
description:
|
|
- The SELinux mode
|
|
required: true
|
|
choices: [ "enforcing", "permissive", "disabled" ]
|
|
conf:
|
|
description:
|
|
- path to the SELinux configuration file, if non-standard
|
|
default: "/etc/selinux/config"
|
|
aliases: ['configfile', 'file']
|
|
notes:
|
|
- Not tested on any debian based system
|
|
requirements: [ libselinux-python ]
|
|
author: "Derek Carter (@goozbach) <goozbach@friocorte.com>"
|
|
'''
|
|
|
|
EXAMPLES = '''
|
|
# Enable SELinux
|
|
- selinux:
|
|
policy: targeted
|
|
state: enforcing
|
|
|
|
# Put SELinux in permissive mode, logging actions that would be blocked.
|
|
- selinux:
|
|
policy: targeted
|
|
state: permissive
|
|
|
|
# Disable SELinux
|
|
- selinux:
|
|
state: disabled
|
|
'''
|
|
|
|
RETURN = '''
|
|
msg:
|
|
description: Messages that describe changes that were made
|
|
returned: always
|
|
type: string
|
|
sample: Config SELinux state changed from 'disabled' to 'permissive'
|
|
configfile:
|
|
description: Path to SELinux configuration file
|
|
returned: always
|
|
type: string
|
|
sample: /etc/selinux/config
|
|
policy:
|
|
description: Name of the SELinux policy
|
|
returned: always
|
|
type: string
|
|
sample: targeted
|
|
state:
|
|
description: SELinux mode
|
|
returned: always
|
|
type: string
|
|
sample: enforcing
|
|
reboot_required:
|
|
description: Whether or not an reboot is required for the changes to take effect
|
|
returned: always
|
|
type: bool
|
|
sample: true
|
|
'''
|
|
|
|
import os
|
|
import re
|
|
import tempfile
|
|
|
|
try:
|
|
import selinux
|
|
HAS_SELINUX = True
|
|
except ImportError:
|
|
HAS_SELINUX = False
|
|
|
|
from ansible.module_utils.basic import AnsibleModule
|
|
from ansible.module_utils.facts.utils import get_file_lines
|
|
|
|
|
|
# getter subroutines
|
|
def get_config_state(configfile):
|
|
lines = get_file_lines(configfile, strip=False)
|
|
|
|
for line in lines:
|
|
stateline = re.match(r'^SELINUX=.*$', line)
|
|
if stateline:
|
|
return line.split('=')[1].strip()
|
|
|
|
|
|
def get_config_policy(configfile):
|
|
lines = get_file_lines(configfile, strip=False)
|
|
|
|
for line in lines:
|
|
stateline = re.match(r'^SELINUXTYPE=.*$', line)
|
|
if stateline:
|
|
return line.split('=')[1].strip()
|
|
|
|
|
|
# setter subroutines
|
|
def set_config_state(module, state, configfile):
|
|
# SELINUX=permissive
|
|
# edit config file with state value
|
|
stateline = 'SELINUX=%s' % state
|
|
lines = get_file_lines(configfile, strip=False)
|
|
|
|
tmpfd, tmpfile = tempfile.mkstemp()
|
|
|
|
with open(tmpfile, "w") as write_file:
|
|
for line in lines:
|
|
write_file.write(re.sub(r'^SELINUX=.*', stateline, line) + '\n')
|
|
|
|
module.atomic_move(tmpfile, configfile)
|
|
|
|
|
|
def set_state(module, 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
|
|
module.fail_json(msg=msg)
|
|
|
|
|
|
def set_config_policy(module, policy, configfile):
|
|
if not os.path.exists('/etc/selinux/%s/policy' % policy):
|
|
module.fail_json(msg='Policy %s does not exist in /etc/selinux/' % policy)
|
|
|
|
# edit config file with state value
|
|
# SELINUXTYPE=targeted
|
|
policyline = 'SELINUXTYPE=%s' % policy
|
|
lines = get_file_lines(configfile, strip=False)
|
|
|
|
tmpfd, tmpfile = tempfile.mkstemp()
|
|
|
|
with open(tmpfile, "w") as write_file:
|
|
for line in lines:
|
|
write_file.write(re.sub(r'^SELINUXTYPE=.*', policyline, line) + '\n')
|
|
|
|
module.atomic_move(tmpfile, configfile)
|
|
|
|
|
|
def main():
|
|
module = AnsibleModule(
|
|
argument_spec=dict(
|
|
policy=dict(required=False),
|
|
state=dict(choices=['enforcing', 'permissive', 'disabled'], required=True),
|
|
configfile=dict(aliases=['conf', 'file'], default='/etc/selinux/config')
|
|
),
|
|
supports_check_mode=True
|
|
)
|
|
|
|
if not HAS_SELINUX:
|
|
module.fail_json(msg='libselinux-python required for this module')
|
|
|
|
# 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'
|
|
reboot_required = False
|
|
|
|
if runtime_enabled:
|
|
# enabled means 'enforcing' or 'permissive'
|
|
if selinux.security_getenforce():
|
|
runtime_state = 'enforcing'
|
|
else:
|
|
runtime_state = 'permissive'
|
|
|
|
if not os.path.isfile(configfile):
|
|
module.fail_json(msg="Unable to find file {0}".format(configfile),
|
|
details="Please install SELinux-policy package, "
|
|
"if this package is not installed previously.")
|
|
|
|
config_policy = get_config_policy(configfile)
|
|
config_state = get_config_state(configfile)
|
|
|
|
# check to see if policy is set if state is not 'disabled'
|
|
if state != 'disabled':
|
|
if not policy:
|
|
module.fail_json(msg='Policy is required if state is not \'disabled\'')
|
|
else:
|
|
if not policy:
|
|
policy = config_policy
|
|
|
|
# check changed values and run changes
|
|
if policy != runtime_policy:
|
|
if module.check_mode:
|
|
module.exit_json(changed=True)
|
|
# cannot change runtime policy
|
|
msgs.append('Running SELinux policy changed from \'%s\' to \'%s\'' % (runtime_policy, policy))
|
|
changed = True
|
|
|
|
if policy != config_policy:
|
|
if module.check_mode:
|
|
module.exit_json(changed=True)
|
|
set_config_policy(module, policy, configfile)
|
|
msgs.append('SELinux policy configuration in \'%s\' changed from \'%s\' to \'%s\'' % (configfile, config_policy, policy))
|
|
changed = True
|
|
|
|
if state != runtime_state:
|
|
if runtime_enabled:
|
|
if state == 'disabled':
|
|
if runtime_state != 'permissive':
|
|
# Temporarily set state to permissive
|
|
if not module.check_mode:
|
|
set_state(module, 'permissive')
|
|
module.warn('SELinux state temporarily changed from \'%s\' to \'permissive\'. State change will take effect next reboot.' % (runtime_state))
|
|
changed = True
|
|
else:
|
|
module.warn('SELinux state change will take effect next reboot')
|
|
reboot_required = True
|
|
else:
|
|
if not module.check_mode:
|
|
set_state(module, state)
|
|
msgs.append('SELinux state changed from \'%s\' to \'%s\'' % (runtime_state, state))
|
|
|
|
# Only report changes if the file is changed.
|
|
# This prevents the task from reporting changes every time the task is run.
|
|
changed = True
|
|
else:
|
|
module.warn("Reboot is required to set SELinux state to %s" % state)
|
|
reboot_required = True
|
|
|
|
if state != config_state:
|
|
if not module.check_mode:
|
|
set_config_state(module, state, configfile)
|
|
msgs.append('Config SELinux state changed from \'%s\' to \'%s\'' % (config_state, state))
|
|
changed = True
|
|
|
|
module.exit_json(changed=changed, msg=', '.join(msgs), configfile=configfile, policy=policy, state=state, reboot_required=reboot_required)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|