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https://github.com/ansible-collections/community.general.git
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selogin
original commit:
8efa4cdde9
update module to match current ansible standards
- update version_added
- fix sanity checks
- match docs to module definition of required and default values
- explicit default of 's0' for selevel
- no default for seuser or login
- rename serange->selevel, add alias
- add required imports
- add RETURN info (stolen from sister module)
- add author github handles
- remove star-import, name specific requirements
- handle import error similar to sister modules
- collapse exceptions
- remove IOError, alias for OSError
- https://stackoverflow.com/questions/29347790/difference-between-ioerror-and-oserror
- drop 'required: false' as false is the default
- list dependencies as python-agnostic
- selogin does not support check_mode
- remove unused functions
- require seuser only if state=present
Co-authored-by: James Cassell <code@james.cassell.me>
This commit is contained in:
Petr Lautrbach
Sam Doran
parent
c8eeca7815
commit
f9e09f0e7f
1 changed files with 242 additions and 0 deletions
242
lib/ansible/modules/system/selogin.py
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242
lib/ansible/modules/system/selogin.py
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#!/usr/bin/python
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# (c) 2017, Petr Lautrbach <plautrba@redhat.com>
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# Based on seport.py module (c) 2014, Dan Keder <dan.keder@gmail.com>
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# This program 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 3 of the License, or
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# (at your option) any later version.
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#
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# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: selogin
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short_description: Manages linux user to SELinux user mapping
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description:
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- Manages linux user to SELinux user mapping
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version_added: "2.8"
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options:
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login:
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description:
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- a Linux user
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required: true
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seuser:
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description:
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- SELinux user name
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required: true
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selevel:
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aliases: [ serange ]
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description:
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- MLS/MCS Security Range (MLS/MCS Systems only) SELinux Range for SELinux login mapping defaults to the SELinux user record range.
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default: s0
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state:
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description:
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- Desired mapping value.
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required: true
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default: present
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choices: [ 'present', 'absent' ]
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reload:
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description:
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- Reload SELinux policy after commit.
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default: yes
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notes:
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- The changes are persistent across reboots
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- Not tested on any debian based system
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requirements: [ 'libselinux', 'policycoreutils' ]
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author:
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- Dan Keder (@dankeder)
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- Petr Lautrbach (@bachradsusi)
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'''
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EXAMPLES = '''
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# Modify the default user on the system to the guest_u user
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- selogin:
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login: __default__
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seuser: guest_u
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state: present
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# Assign gijoe user on an MLS machine a range and to the staff_u user
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- selogin:
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login: gijoe
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seuser: staff_u
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serange: SystemLow-Secret
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state: present
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# Assign all users in the engineering group to the staff_u user
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- selogin:
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login: '%engineering'
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seuser: staff_u
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state: present
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'''
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RETURN = r'''
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# Default return values
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'''
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import traceback
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SELINUX_IMP_ERR = None
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try:
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import selinux
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HAVE_SELINUX = True
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except ImportError:
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SELINUX_IMP_ERR = traceback.format_exc()
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HAVE_SELINUX = False
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SEOBJECT_IMP_ERR = None
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try:
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import seobject
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HAVE_SEOBJECT = True
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except ImportError:
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SEOBJECT_IMP_ERR = traceback.format_exc()
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HAVE_SEOBJECT = False
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from ansible.module_utils.basic import AnsibleModule, missing_required_lib
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from ansible.module_utils._text import to_native
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def semanage_login_add(module, login, seuser, do_reload, serange='s0', sestore=''):
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""" Add linux user to SELinux user mapping
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:type module: AnsibleModule
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:param module: Ansible module
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:type login: str
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:param login: a Linux User or a Linux group if it begins with %
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:type seuser: str
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:param proto: An SELinux user ('__default__', 'unconfined_u', 'staff_u', ...), see 'semanage login -l'
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:type serange: str
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:param serange: SELinux MLS/MCS range (defaults to 's0')
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:type do_reload: bool
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:param do_reload: Whether to reload SELinux policy after commit
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:type sestore: str
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:param sestore: SELinux store
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:rtype: bool
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:return: True if the policy was changed, otherwise False
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"""
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try:
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selogin = seobject.loginRecords(sestore)
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selogin.set_reload(do_reload)
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change = False
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all_logins = selogin.get_all()
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# module.fail_json(msg="%s: %s %s" % (all_logins, login, sestore))
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# for local_login in all_logins:
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if login not in all_logins.keys():
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selogin.add(login, seuser, serange)
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change = True
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else:
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selogin.modify(login, seuser, serange)
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except (ValueError, KeyError, OSError, RuntimeError) as e:
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module.fail_json(msg="%s: %s\n" % (e.__class__.__name__, to_native(e)), exception=traceback.format_exc())
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return change
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def semanage_login_del(module, login, seuser, do_reload, sestore=''):
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""" Delete linux user to SELinux user mapping
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:type module: AnsibleModule
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:param module: Ansible module
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:type login: str
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:param login: a Linux User or a Linux group if it begins with %
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:type seuser: str
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:param proto: An SELinux user ('__default__', 'unconfined_u', 'staff_u', ...), see 'semanage login -l'
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:type do_reload: bool
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:param do_reload: Whether to reload SELinux policy after commit
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:type sestore: str
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:param sestore: SELinux store
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:rtype: bool
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:return: True if the policy was changed, otherwise False
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"""
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try:
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selogin = seobject.loginRecords(sestore)
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selogin.set_reload(do_reload)
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change = False
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all_logins = selogin.get_all()
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# module.fail_json(msg="%s: %s %s" % (all_logins, login, sestore))
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if login in all_logins.keys():
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selogin.delete(login)
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change = True
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except (ValueError, KeyError, OSError, RuntimeError) as e:
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module.fail_json(msg="%s: %s\n" % (e.__class__.__name__, to_native(e)), exception=traceback.format_exc())
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return change
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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login=dict(type='str', required=True),
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seuser=dict(type='str'),
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selevel=dict(type='str', aliases=['serange'], default='s0'),
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state=dict(type='str', default='present', choices=['absent', 'present']),
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reload=dict(type='bool', default=True),
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),
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required_if=[
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["state", "present", ["seuser"]]
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],
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supports_check_mode=False
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)
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if not HAVE_SELINUX:
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module.fail_json(msg=missing_required_lib("libselinux"), exception=SELINUX_IMP_ERR)
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if not HAVE_SEOBJECT:
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module.fail_json(msg=missing_required_lib("seobject from policycoreutils"), exception=SEOBJECT_IMP_ERR)
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if not selinux.is_selinux_enabled():
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module.fail_json(msg="SELinux is disabled on this host.")
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login = module.params['login']
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seuser = module.params['seuser']
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serange = module.params['selevel']
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state = module.params['state']
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do_reload = module.params['reload']
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result = {
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'login': login,
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'seuser': seuser,
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'serange': serange,
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'state': state,
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}
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if state == 'present':
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result['changed'] = semanage_login_add(module, login, seuser, do_reload, serange)
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elif state == 'absent':
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result['changed'] = semanage_login_del(module, login, seuser, do_reload)
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else:
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module.fail_json(msg='Invalid value of argument "state": {0}'.format(state))
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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