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ansible/library/system/getent

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2014, Brian Coca <brian.coca+dev@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
DOCUMENTATION = '''
---
module: getent
short_description: a wrapper to the unix getent utility
description:
- Runs getent against one of it's various databases and returns information into
the host's facts
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version_added: "1.8"
options:
database:
required: True
description:
- the name of a getent database supported by the target system (passwd, group,
hosts, etc).
key:
required: False
default: ''
description:
- key from which to return values from the specified database, otherwise the
full contents are returned.
split:
required: False
default: None
description:
- "character used to split the database values into lists/arrays such as ':' or '\t', otherwise it will try to pick one depending on the database"
fail_key:
required: False
default: True
description:
- If a supplied key is missing this will make the task fail if True
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notes:
- "Not all databases support enumeration, check system documentation for details"
requirements: [ ]
author: Brian Coca
'''
EXAMPLES = '''
# get root user info
- getent: database=passwd key=root
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register: root_info
# get all groups
- getent: database=group split=':'
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register: groups
# get all hosts, split by tab
- getent: database=hosts
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register: hosts
# get http service info, no error if missing
- getent: database=services key=http fail_key=False
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register: http_info
# get user password hash (requires sudo/root)
- getent: database=shadow key=www-data split=:
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register: pw_hash
'''
def main():
module = AnsibleModule(
argument_spec = dict(
database = dict(required=True),
key = dict(required=False, default=None),
split = dict(required=False, default=None),
fail_key = dict(required=False, 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')
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 split is None and database in colon:
split = ':'
try:
rc, out, err = module.run_command(cmd)
except Exception, e:
module.fail_json(msg=str(e))
msg = "Unexpected failure!"
dbtree = 'getent_%s' % database
results = { dbtree: {} }
if rc == 0:
for line in out.splitlines():
record = line.split(split)
results[dbtree][record[0]] = record[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)
# import module snippets
from ansible.module_utils.basic import *
main()