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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (c) 2017, Petr Lautrbach <plautrba@redhat.com>
# Based on seport.py module (c) 2014, Dan Keder <dan.keder@gmail.com>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = '''
---
module: selogin
short_description: Manages linux user to SELinux user mapping
description:
- Manages linux user to SELinux user mapping
extends_documentation_fragment:
- community.general.attributes
attributes:
check_mode:
support: full
diff_mode:
support: none
options:
login:
type: str
description:
- a Linux user
required: true
seuser:
type: str
description:
- SELinux user name
selevel:
type: str
aliases: [ serange ]
description:
- MLS/MCS Security Range (MLS/MCS Systems only) SELinux Range for SELinux login mapping defaults to the SELinux user record range.
default: s0
state:
type: str
description:
- Desired mapping value.
default: present
choices: [ 'present', 'absent' ]
reload:
description:
- Reload SELinux policy after commit.
type: bool
default: true
ignore_selinux_state:
description:
- Run independent of selinux runtime state
type: bool
default: false
notes:
- The changes are persistent across reboots
- Not tested on any debian based system
requirements: [ 'libselinux', 'policycoreutils' ]
author:
- Dan Keder (@dankeder)
- Petr Lautrbach (@bachradsusi)
- James Cassell (@jamescassell)
'''
EXAMPLES = '''
- name: Modify the default user on the system to the guest_u user
community.general.selogin:
login: __default__
seuser: guest_u
state: present
- name: Assign gijoe user on an MLS machine a range and to the staff_u user
community.general.selogin:
login: gijoe
seuser: staff_u
serange: SystemLow-Secret
state: present
- name: Assign all users in the engineering group to the staff_u user
community.general.selogin:
login: '%engineering'
seuser: staff_u
state: present
'''
RETURN = r'''
# Default return values
'''
import traceback
SELINUX_IMP_ERR = None
try:
import selinux
HAVE_SELINUX = True
except ImportError:
SELINUX_IMP_ERR = traceback.format_exc()
HAVE_SELINUX = False
SEOBJECT_IMP_ERR = None
try:
import seobject
HAVE_SEOBJECT = True
except ImportError:
SEOBJECT_IMP_ERR = traceback.format_exc()
HAVE_SEOBJECT = False
from ansible.module_utils.basic import AnsibleModule, missing_required_lib
from ansible.module_utils.common.text.converters import to_native
def semanage_login_add(module, login, seuser, do_reload, serange='s0', sestore=''):
""" Add linux user to SELinux user mapping
:type module: AnsibleModule
:param module: Ansible module
:type login: str
:param login: a Linux User or a Linux group if it begins with %
:type seuser: str
:param proto: An SELinux user ('__default__', 'unconfined_u', 'staff_u', ...), see 'semanage login -l'
:type serange: str
:param serange: SELinux MLS/MCS range (defaults to 's0')
:type do_reload: bool
:param do_reload: Whether to reload SELinux policy after commit
:type sestore: str
:param sestore: SELinux store
:rtype: bool
:return: True if the policy was changed, otherwise False
"""
try:
selogin = seobject.loginRecords(sestore)
selogin.set_reload(do_reload)
change = False
all_logins = selogin.get_all()
# module.fail_json(msg="%s: %s %s" % (all_logins, login, sestore))
# for local_login in all_logins:
if login not in all_logins.keys():
change = True
if not module.check_mode:
selogin.add(login, seuser, serange)
else:
if all_logins[login][0] != seuser or all_logins[login][1] != serange:
change = True
if not module.check_mode:
selogin.modify(login, seuser, serange)
except (ValueError, KeyError, OSError, RuntimeError) as e:
module.fail_json(msg="%s: %s\n" % (e.__class__.__name__, to_native(e)), exception=traceback.format_exc())
return change
def semanage_login_del(module, login, seuser, do_reload, sestore=''):
""" Delete linux user to SELinux user mapping
:type module: AnsibleModule
:param module: Ansible module
:type login: str
:param login: a Linux User or a Linux group if it begins with %
:type seuser: str
:param proto: An SELinux user ('__default__', 'unconfined_u', 'staff_u', ...), see 'semanage login -l'
:type do_reload: bool
:param do_reload: Whether to reload SELinux policy after commit
:type sestore: str
:param sestore: SELinux store
:rtype: bool
:return: True if the policy was changed, otherwise False
"""
try:
selogin = seobject.loginRecords(sestore)
selogin.set_reload(do_reload)
change = False
all_logins = selogin.get_all()
# module.fail_json(msg="%s: %s %s" % (all_logins, login, sestore))
if login in all_logins.keys():
change = True
if not module.check_mode:
selogin.delete(login)
except (ValueError, KeyError, OSError, RuntimeError) as e:
module.fail_json(msg="%s: %s\n" % (e.__class__.__name__, to_native(e)), exception=traceback.format_exc())
return change
def get_runtime_status(ignore_selinux_state=False):
return True if ignore_selinux_state is True else selinux.is_selinux_enabled()
def main():
module = AnsibleModule(
argument_spec=dict(
ignore_selinux_state=dict(type='bool', default=False),
login=dict(type='str', required=True),
seuser=dict(type='str'),
selevel=dict(type='str', aliases=['serange'], default='s0'),
state=dict(type='str', default='present', choices=['absent', 'present']),
reload=dict(type='bool', default=True),
),
required_if=[
["state", "present", ["seuser"]]
],
supports_check_mode=True
)
if not HAVE_SELINUX:
module.fail_json(msg=missing_required_lib("libselinux"), exception=SELINUX_IMP_ERR)
if not HAVE_SEOBJECT:
module.fail_json(msg=missing_required_lib("seobject from policycoreutils"), exception=SEOBJECT_IMP_ERR)
ignore_selinux_state = module.params['ignore_selinux_state']
if not get_runtime_status(ignore_selinux_state):
module.fail_json(msg="SELinux is disabled on this host.")
login = module.params['login']
seuser = module.params['seuser']
serange = module.params['selevel']
state = module.params['state']
do_reload = module.params['reload']
result = {
'login': login,
'seuser': seuser,
'serange': serange,
'state': state,
}
if state == 'present':
result['changed'] = semanage_login_add(module, login, seuser, do_reload, serange)
elif state == 'absent':
result['changed'] = semanage_login_del(module, login, seuser, do_reload)
else:
module.fail_json(msg='Invalid value of argument "state": {0}'.format(state))
module.exit_json(**result)
if __name__ == '__main__':
main()
|
