ansible-hardening/library/get_users
Major Hayden 0e8feaf9eb Verify password age limits [+Docs]
This patch checks for user accounts that have a maximum password age of more
than 60 days. It also extends the `get_users` module to retrieve shadow
database information.

Implements: blueprint security-rhel7-stig
Change-Id: Ida3fd56ee9133dab73f65d47a6934b5596e95b69
2016-12-08 09:44:23 -06:00

123 lines
3.2 KiB
Python
Executable File

#!/usr/bin/env python
# Copyright 2016, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Get user facts."""
import grp
import pwd
import spwd
from ansible.module_utils.basic import AnsibleModule
DOCUMENTATION = """
---
module: get_users
short_description:
- A module for gathering facts about Linux users.
description:
- This module gathers facts about the Linux users and groups that exist
on the system.
author: major@mhtx.net
"""
EXAMPLES = '''
- get_users:
min_uid: 1000
max_uid: 2000
'''
RETURN = '''
users:
description: users matching arguments provided
returned: success
type: list
'''
def make_user_dict(user_record):
"""Create a dictionary of user attributes."""
user_dict = {
'name': user_record.pw_name,
'uid': user_record.pw_uid,
'gid': user_record.pw_gid,
'gecos': user_record.pw_gecos,
'dir': user_record.pw_dir,
'shell': user_record.pw_shell,
'group': make_group_dict(user_record.pw_gid),
'shadow': make_shadow_dict(user_record.pw_name)
}
return user_dict
def make_group_dict(gid):
"""Create dictionary from group record."""
try:
group_record = grp.getgrgid(gid)
except KeyError:
return False
group_dict = {
'name': group_record.gr_name,
'passwd': group_record.gr_passwd,
'gid': group_record.gr_gid,
}
return group_dict
def make_shadow_dict(username):
"""Create a dictionary of user shadow password database attributes."""
try:
shadow_record = spwd.getspnam(username)
except KeyError:
return False
shadow_dict = {
'last_changed': shadow_record.sp_lstchg,
'min_days': shadow_record.sp_min,
'max_days': shadow_record.sp_max,
'warn_days': shadow_record.sp_warn,
'inact_days': shadow_record.sp_inact,
'expire_days': shadow_record.sp_expire,
}
return shadow_dict
def main():
"""Ansible calls this function."""
module = AnsibleModule(
argument_spec=dict(
min_uid=dict(default=0, type='int'),
max_uid=dict(default=65535, type='int'),
),
supports_check_mode=True,
)
# Get all of the users on the system into a list of dicts. The 'pwd' module
# returns them in a struct.
all_users = [make_user_dict(x) for x in pwd.getpwall()]
# Get the users that match our criteria.
user_list = [x for x in all_users
if (x['uid'] >= module.params['min_uid'] and
x['uid'] <= module.params['max_uid'])]
# Return the user data to the Ansible task.
module.exit_json(
changed=False,
users=user_list
)
if __name__ == '__main__':
main()