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# -*- coding: utf-8 -*-
# Copyright: (c) 2014, Brian Coca <brian.coca+dev@gmail.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import annotations
DOCUMENTATION = r'''
---
module: getent
short_description: A wrapper to the unix getent utility
description:
- Runs getent against one of its various databases and returns information into
the host's facts, in a C(getent_<database>) prefixed variable.
version_added: "1.8"
options:
database:
description:
- The name of a getent database supported by the target system (passwd, group,
hosts, etc).
type: str
required: True
key:
description:
- Key from which to return values from the specified database, otherwise the
full contents are returned.
type: str
service:
description:
- Override all databases with the specified service
- The underlying system must support the service flag which is not always available.
type: str
version_added: "2.9"
split:
description:
- Character used to split the database values into lists/arrays such as V(:) or V(\\t),
otherwise it will try to pick one depending on the database.
type: str
fail_key:
description:
- If a supplied key is missing this will make the task fail if V(true).
type: bool
default: 'yes'
extends_documentation_fragment:
- action_common_attributes
- action_common_attributes.facts
attributes:
check_mode:
support: full
diff_mode:
support: none
facts:
support: full
platform:
platforms: posix
notes:
- Not all databases support enumeration, check system documentation for details.
author:
- Brian Coca (@bcoca)
'''
EXAMPLES = '''
- name: Get root user info
ansible.builtin.getent:
database: passwd
key: root
- ansible.builtin.debug:
var: ansible_facts.getent_passwd
- name: Get all groups
ansible.builtin.getent:
database: group
split: ':'
- ansible.builtin.debug:
var: ansible_facts.getent_group
- name: Get all hosts, split by tab
ansible.builtin.getent:
database: hosts
- ansible.builtin.debug:
var: ansible_facts.getent_hosts
- name: Get http service info, no error if missing
ansible.builtin.getent:
database: services
key: http
fail_key: False
- ansible.builtin.debug:
var: ansible_facts.getent_services
- name: Get user password hash (requires sudo/root)
ansible.builtin.getent:
database: shadow
key: www-data
split: ':'
- ansible.builtin.debug:
var: ansible_facts.getent_shadow
'''
RETURN = '''
ansible_facts:
description: Facts to add to ansible_facts.
returned: always
type: dict
contains:
getent_<database>:
description:
- A list of results or a single result as a list of the fields the db provides
- The list elements depend on the database queried, see getent man page for the structure
- Starting at 2.11 it now returns multiple duplicate entries, previously it only returned the last one
returned: always
type: list
'''
import traceback
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.common.text.converters import to_native
def main():
module = AnsibleModule(
argument_spec=dict(
database=dict(type='str', required=True),
key=dict(type='str', no_log=False),
service=dict(type='str'),
split=dict(type='str'),
fail_key=dict(type='bool', default=True),
),
supports_check_mode=True,
)
colon = ['passwd', 'shadow', 'group', 'gshadow']
database = module.params['database']
key = module.params.get('key')
split = module.params.get('split')
service = module.params.get('service')
fail_key = module.params.get('fail_key')
getent_bin = module.get_bin_path('getent', True)
if key is not None:
cmd = [getent_bin, database, key]
else:
cmd = [getent_bin, database]
if service is not None:
cmd.extend(['-s', service])
if split is None and database in colon:
split = ':'
try:
rc, out, err = module.run_command(cmd)
except Exception as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
msg = "Unexpected failure!"
dbtree = 'getent_%s' % database
results = {dbtree: {}}
if rc == 0:
seen = {}
for line in out.splitlines():
record = line.split(split)
if record[0] in seen:
# more than one result for same key, ensure we store in a list
if seen[record[0]] == 1:
results[dbtree][record[0]] = [results[dbtree][record[0]]]
results[dbtree][record[0]].append(record[1:])
seen[record[0]] += 1
else:
# new key/value, just assign
results[dbtree][record[0]] = record[1:]
seen[record[0]] = 1
module.exit_json(ansible_facts=results)
elif rc == 1:
msg = "Missing arguments, or database unknown."
elif rc == 2:
msg = "One or more supplied key could not be found in the database."
if not fail_key:
results[dbtree][key] = None
module.exit_json(ansible_facts=results, msg=msg)
elif rc == 3:
msg = "Enumeration not supported on this database."
module.fail_json(msg=msg)
if __name__ == '__main__':
main()
|
